1 /* 2 * Disk Array driver for HP Smart Array SAS controllers 3 * Copyright 2016 Microsemi Corporation 4 * Copyright 2014-2015 PMC-Sierra, Inc. 5 * Copyright 2000,2009-2015 Hewlett-Packard Development Company, L.P. 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; version 2 of the License. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or 14 * NON INFRINGEMENT. See the GNU General Public License for more details. 15 * 16 * Questions/Comments/Bugfixes to esc.storagedev@microsemi.com 17 * 18 */ 19 20 #include <linux/module.h> 21 #include <linux/interrupt.h> 22 #include <linux/types.h> 23 #include <linux/pci.h> 24 #include <linux/kernel.h> 25 #include <linux/slab.h> 26 #include <linux/delay.h> 27 #include <linux/fs.h> 28 #include <linux/timer.h> 29 #include <linux/init.h> 30 #include <linux/spinlock.h> 31 #include <linux/compat.h> 32 #include <linux/blktrace_api.h> 33 #include <linux/uaccess.h> 34 #include <linux/io.h> 35 #include <linux/dma-mapping.h> 36 #include <linux/completion.h> 37 #include <linux/moduleparam.h> 38 #include <scsi/scsi.h> 39 #include <scsi/scsi_cmnd.h> 40 #include <scsi/scsi_device.h> 41 #include <scsi/scsi_host.h> 42 #include <scsi/scsi_tcq.h> 43 #include <scsi/scsi_eh.h> 44 #include <scsi/scsi_transport_sas.h> 45 #include <scsi/scsi_dbg.h> 46 #include <linux/cciss_ioctl.h> 47 #include <linux/string.h> 48 #include <linux/bitmap.h> 49 #include <linux/atomic.h> 50 #include <linux/jiffies.h> 51 #include <linux/percpu-defs.h> 52 #include <linux/percpu.h> 53 #include <asm/unaligned.h> 54 #include <asm/div64.h> 55 #include "hpsa_cmd.h" 56 #include "hpsa.h" 57 58 /* 59 * HPSA_DRIVER_VERSION must be 3 byte values (0-255) separated by '.' 60 * with an optional trailing '-' followed by a byte value (0-255). 61 */ 62 #define HPSA_DRIVER_VERSION "3.4.20-200" 63 #define DRIVER_NAME "HP HPSA Driver (v " HPSA_DRIVER_VERSION ")" 64 #define HPSA "hpsa" 65 66 /* How long to wait for CISS doorbell communication */ 67 #define CLEAR_EVENT_WAIT_INTERVAL 20 /* ms for each msleep() call */ 68 #define MODE_CHANGE_WAIT_INTERVAL 10 /* ms for each msleep() call */ 69 #define MAX_CLEAR_EVENT_WAIT 30000 /* times 20 ms = 600 s */ 70 #define MAX_MODE_CHANGE_WAIT 2000 /* times 10 ms = 20 s */ 71 #define MAX_IOCTL_CONFIG_WAIT 1000 72 73 /*define how many times we will try a command because of bus resets */ 74 #define MAX_CMD_RETRIES 3 75 /* How long to wait before giving up on a command */ 76 #define HPSA_EH_PTRAID_TIMEOUT (240 * HZ) 77 78 /* Embedded module documentation macros - see modules.h */ 79 MODULE_AUTHOR("Hewlett-Packard Company"); 80 MODULE_DESCRIPTION("Driver for HP Smart Array Controller version " \ 81 HPSA_DRIVER_VERSION); 82 MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers"); 83 MODULE_VERSION(HPSA_DRIVER_VERSION); 84 MODULE_LICENSE("GPL"); 85 MODULE_ALIAS("cciss"); 86 87 static int hpsa_simple_mode; 88 module_param(hpsa_simple_mode, int, S_IRUGO|S_IWUSR); 89 MODULE_PARM_DESC(hpsa_simple_mode, 90 "Use 'simple mode' rather than 'performant mode'"); 91 92 /* define the PCI info for the cards we can control */ 93 static const struct pci_device_id hpsa_pci_device_id[] = { 94 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241}, 95 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243}, 96 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245}, 97 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247}, 98 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249}, 99 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324A}, 100 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324B}, 101 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3233}, 102 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3350}, 103 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3351}, 104 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3352}, 105 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3353}, 106 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3354}, 107 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3355}, 108 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3356}, 109 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103c, 0x1920}, 110 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1921}, 111 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1922}, 112 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1923}, 113 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1924}, 114 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103c, 0x1925}, 115 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1926}, 116 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1928}, 117 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1929}, 118 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21BD}, 119 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21BE}, 120 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21BF}, 121 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C0}, 122 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C1}, 123 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C2}, 124 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C3}, 125 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C4}, 126 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C5}, 127 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C6}, 128 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C7}, 129 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C8}, 130 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C9}, 131 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CA}, 132 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CB}, 133 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CC}, 134 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CD}, 135 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CE}, 136 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0580}, 137 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0581}, 138 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0582}, 139 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0583}, 140 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0584}, 141 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0585}, 142 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0076}, 143 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0087}, 144 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x007D}, 145 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0088}, 146 {PCI_VENDOR_ID_HP, 0x333f, 0x103c, 0x333f}, 147 {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, 148 PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0}, 149 {PCI_VENDOR_ID_COMPAQ, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, 150 PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0}, 151 {0,} 152 }; 153 154 MODULE_DEVICE_TABLE(pci, hpsa_pci_device_id); 155 156 /* board_id = Subsystem Device ID & Vendor ID 157 * product = Marketing Name for the board 158 * access = Address of the struct of function pointers 159 */ 160 static struct board_type products[] = { 161 {0x40700E11, "Smart Array 5300", &SA5A_access}, 162 {0x40800E11, "Smart Array 5i", &SA5B_access}, 163 {0x40820E11, "Smart Array 532", &SA5B_access}, 164 {0x40830E11, "Smart Array 5312", &SA5B_access}, 165 {0x409A0E11, "Smart Array 641", &SA5A_access}, 166 {0x409B0E11, "Smart Array 642", &SA5A_access}, 167 {0x409C0E11, "Smart Array 6400", &SA5A_access}, 168 {0x409D0E11, "Smart Array 6400 EM", &SA5A_access}, 169 {0x40910E11, "Smart Array 6i", &SA5A_access}, 170 {0x3225103C, "Smart Array P600", &SA5A_access}, 171 {0x3223103C, "Smart Array P800", &SA5A_access}, 172 {0x3234103C, "Smart Array P400", &SA5A_access}, 173 {0x3235103C, "Smart Array P400i", &SA5A_access}, 174 {0x3211103C, "Smart Array E200i", &SA5A_access}, 175 {0x3212103C, "Smart Array E200", &SA5A_access}, 176 {0x3213103C, "Smart Array E200i", &SA5A_access}, 177 {0x3214103C, "Smart Array E200i", &SA5A_access}, 178 {0x3215103C, "Smart Array E200i", &SA5A_access}, 179 {0x3237103C, "Smart Array E500", &SA5A_access}, 180 {0x323D103C, "Smart Array P700m", &SA5A_access}, 181 {0x3241103C, "Smart Array P212", &SA5_access}, 182 {0x3243103C, "Smart Array P410", &SA5_access}, 183 {0x3245103C, "Smart Array P410i", &SA5_access}, 184 {0x3247103C, "Smart Array P411", &SA5_access}, 185 {0x3249103C, "Smart Array P812", &SA5_access}, 186 {0x324A103C, "Smart Array P712m", &SA5_access}, 187 {0x324B103C, "Smart Array P711m", &SA5_access}, 188 {0x3233103C, "HP StorageWorks 1210m", &SA5_access}, /* alias of 333f */ 189 {0x3350103C, "Smart Array P222", &SA5_access}, 190 {0x3351103C, "Smart Array P420", &SA5_access}, 191 {0x3352103C, "Smart Array P421", &SA5_access}, 192 {0x3353103C, "Smart Array P822", &SA5_access}, 193 {0x3354103C, "Smart Array P420i", &SA5_access}, 194 {0x3355103C, "Smart Array P220i", &SA5_access}, 195 {0x3356103C, "Smart Array P721m", &SA5_access}, 196 {0x1920103C, "Smart Array P430i", &SA5_access}, 197 {0x1921103C, "Smart Array P830i", &SA5_access}, 198 {0x1922103C, "Smart Array P430", &SA5_access}, 199 {0x1923103C, "Smart Array P431", &SA5_access}, 200 {0x1924103C, "Smart Array P830", &SA5_access}, 201 {0x1925103C, "Smart Array P831", &SA5_access}, 202 {0x1926103C, "Smart Array P731m", &SA5_access}, 203 {0x1928103C, "Smart Array P230i", &SA5_access}, 204 {0x1929103C, "Smart Array P530", &SA5_access}, 205 {0x21BD103C, "Smart Array P244br", &SA5_access}, 206 {0x21BE103C, "Smart Array P741m", &SA5_access}, 207 {0x21BF103C, "Smart HBA H240ar", &SA5_access}, 208 {0x21C0103C, "Smart Array P440ar", &SA5_access}, 209 {0x21C1103C, "Smart Array P840ar", &SA5_access}, 210 {0x21C2103C, "Smart Array P440", &SA5_access}, 211 {0x21C3103C, "Smart Array P441", &SA5_access}, 212 {0x21C4103C, "Smart Array", &SA5_access}, 213 {0x21C5103C, "Smart Array P841", &SA5_access}, 214 {0x21C6103C, "Smart HBA H244br", &SA5_access}, 215 {0x21C7103C, "Smart HBA H240", &SA5_access}, 216 {0x21C8103C, "Smart HBA H241", &SA5_access}, 217 {0x21C9103C, "Smart Array", &SA5_access}, 218 {0x21CA103C, "Smart Array P246br", &SA5_access}, 219 {0x21CB103C, "Smart Array P840", &SA5_access}, 220 {0x21CC103C, "Smart Array", &SA5_access}, 221 {0x21CD103C, "Smart Array", &SA5_access}, 222 {0x21CE103C, "Smart HBA", &SA5_access}, 223 {0x05809005, "SmartHBA-SA", &SA5_access}, 224 {0x05819005, "SmartHBA-SA 8i", &SA5_access}, 225 {0x05829005, "SmartHBA-SA 8i8e", &SA5_access}, 226 {0x05839005, "SmartHBA-SA 8e", &SA5_access}, 227 {0x05849005, "SmartHBA-SA 16i", &SA5_access}, 228 {0x05859005, "SmartHBA-SA 4i4e", &SA5_access}, 229 {0x00761590, "HP Storage P1224 Array Controller", &SA5_access}, 230 {0x00871590, "HP Storage P1224e Array Controller", &SA5_access}, 231 {0x007D1590, "HP Storage P1228 Array Controller", &SA5_access}, 232 {0x00881590, "HP Storage P1228e Array Controller", &SA5_access}, 233 {0x333f103c, "HP StorageWorks 1210m Array Controller", &SA5_access}, 234 {0xFFFF103C, "Unknown Smart Array", &SA5_access}, 235 }; 236 237 static struct scsi_transport_template *hpsa_sas_transport_template; 238 static int hpsa_add_sas_host(struct ctlr_info *h); 239 static void hpsa_delete_sas_host(struct ctlr_info *h); 240 static int hpsa_add_sas_device(struct hpsa_sas_node *hpsa_sas_node, 241 struct hpsa_scsi_dev_t *device); 242 static void hpsa_remove_sas_device(struct hpsa_scsi_dev_t *device); 243 static struct hpsa_scsi_dev_t 244 *hpsa_find_device_by_sas_rphy(struct ctlr_info *h, 245 struct sas_rphy *rphy); 246 247 #define SCSI_CMD_BUSY ((struct scsi_cmnd *)&hpsa_cmd_busy) 248 static const struct scsi_cmnd hpsa_cmd_busy; 249 #define SCSI_CMD_IDLE ((struct scsi_cmnd *)&hpsa_cmd_idle) 250 static const struct scsi_cmnd hpsa_cmd_idle; 251 static int number_of_controllers; 252 253 static irqreturn_t do_hpsa_intr_intx(int irq, void *dev_id); 254 static irqreturn_t do_hpsa_intr_msi(int irq, void *dev_id); 255 static int hpsa_ioctl(struct scsi_device *dev, unsigned int cmd, 256 void __user *arg); 257 static int hpsa_passthru_ioctl(struct ctlr_info *h, 258 IOCTL_Command_struct *iocommand); 259 static int hpsa_big_passthru_ioctl(struct ctlr_info *h, 260 BIG_IOCTL_Command_struct *ioc); 261 262 #ifdef CONFIG_COMPAT 263 static int hpsa_compat_ioctl(struct scsi_device *dev, unsigned int cmd, 264 void __user *arg); 265 #endif 266 267 static void cmd_free(struct ctlr_info *h, struct CommandList *c); 268 static struct CommandList *cmd_alloc(struct ctlr_info *h); 269 static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c); 270 static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h, 271 struct scsi_cmnd *scmd); 272 static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h, 273 void *buff, size_t size, u16 page_code, unsigned char *scsi3addr, 274 int cmd_type); 275 static void hpsa_free_cmd_pool(struct ctlr_info *h); 276 #define VPD_PAGE (1 << 8) 277 #define HPSA_SIMPLE_ERROR_BITS 0x03 278 279 static int hpsa_scsi_queue_command(struct Scsi_Host *h, struct scsi_cmnd *cmd); 280 static void hpsa_scan_start(struct Scsi_Host *); 281 static int hpsa_scan_finished(struct Scsi_Host *sh, 282 unsigned long elapsed_time); 283 static int hpsa_change_queue_depth(struct scsi_device *sdev, int qdepth); 284 285 static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd); 286 static int hpsa_slave_alloc(struct scsi_device *sdev); 287 static int hpsa_slave_configure(struct scsi_device *sdev); 288 static void hpsa_slave_destroy(struct scsi_device *sdev); 289 290 static void hpsa_update_scsi_devices(struct ctlr_info *h); 291 static int check_for_unit_attention(struct ctlr_info *h, 292 struct CommandList *c); 293 static void check_ioctl_unit_attention(struct ctlr_info *h, 294 struct CommandList *c); 295 /* performant mode helper functions */ 296 static void calc_bucket_map(int *bucket, int num_buckets, 297 int nsgs, int min_blocks, u32 *bucket_map); 298 static void hpsa_free_performant_mode(struct ctlr_info *h); 299 static int hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h); 300 static inline u32 next_command(struct ctlr_info *h, u8 q); 301 static int hpsa_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr, 302 u32 *cfg_base_addr, u64 *cfg_base_addr_index, 303 u64 *cfg_offset); 304 static int hpsa_pci_find_memory_BAR(struct pci_dev *pdev, 305 unsigned long *memory_bar); 306 static int hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id, 307 bool *legacy_board); 308 static int wait_for_device_to_become_ready(struct ctlr_info *h, 309 unsigned char lunaddr[], 310 int reply_queue); 311 static int hpsa_wait_for_board_state(struct pci_dev *pdev, void __iomem *vaddr, 312 int wait_for_ready); 313 static inline void finish_cmd(struct CommandList *c); 314 static int hpsa_wait_for_mode_change_ack(struct ctlr_info *h); 315 #define BOARD_NOT_READY 0 316 #define BOARD_READY 1 317 static void hpsa_drain_accel_commands(struct ctlr_info *h); 318 static void hpsa_flush_cache(struct ctlr_info *h); 319 static int hpsa_scsi_ioaccel_queue_command(struct ctlr_info *h, 320 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len, 321 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk); 322 static void hpsa_command_resubmit_worker(struct work_struct *work); 323 static u32 lockup_detected(struct ctlr_info *h); 324 static int detect_controller_lockup(struct ctlr_info *h); 325 static void hpsa_disable_rld_caching(struct ctlr_info *h); 326 static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h, 327 struct ReportExtendedLUNdata *buf, int bufsize); 328 static bool hpsa_vpd_page_supported(struct ctlr_info *h, 329 unsigned char scsi3addr[], u8 page); 330 static int hpsa_luns_changed(struct ctlr_info *h); 331 static bool hpsa_cmd_dev_match(struct ctlr_info *h, struct CommandList *c, 332 struct hpsa_scsi_dev_t *dev, 333 unsigned char *scsi3addr); 334 335 static inline struct ctlr_info *sdev_to_hba(struct scsi_device *sdev) 336 { 337 unsigned long *priv = shost_priv(sdev->host); 338 return (struct ctlr_info *) *priv; 339 } 340 341 static inline struct ctlr_info *shost_to_hba(struct Scsi_Host *sh) 342 { 343 unsigned long *priv = shost_priv(sh); 344 return (struct ctlr_info *) *priv; 345 } 346 347 static inline bool hpsa_is_cmd_idle(struct CommandList *c) 348 { 349 return c->scsi_cmd == SCSI_CMD_IDLE; 350 } 351 352 /* extract sense key, asc, and ascq from sense data. -1 means invalid. */ 353 static void decode_sense_data(const u8 *sense_data, int sense_data_len, 354 u8 *sense_key, u8 *asc, u8 *ascq) 355 { 356 struct scsi_sense_hdr sshdr; 357 bool rc; 358 359 *sense_key = -1; 360 *asc = -1; 361 *ascq = -1; 362 363 if (sense_data_len < 1) 364 return; 365 366 rc = scsi_normalize_sense(sense_data, sense_data_len, &sshdr); 367 if (rc) { 368 *sense_key = sshdr.sense_key; 369 *asc = sshdr.asc; 370 *ascq = sshdr.ascq; 371 } 372 } 373 374 static int check_for_unit_attention(struct ctlr_info *h, 375 struct CommandList *c) 376 { 377 u8 sense_key, asc, ascq; 378 int sense_len; 379 380 if (c->err_info->SenseLen > sizeof(c->err_info->SenseInfo)) 381 sense_len = sizeof(c->err_info->SenseInfo); 382 else 383 sense_len = c->err_info->SenseLen; 384 385 decode_sense_data(c->err_info->SenseInfo, sense_len, 386 &sense_key, &asc, &ascq); 387 if (sense_key != UNIT_ATTENTION || asc == 0xff) 388 return 0; 389 390 switch (asc) { 391 case STATE_CHANGED: 392 dev_warn(&h->pdev->dev, 393 "%s: a state change detected, command retried\n", 394 h->devname); 395 break; 396 case LUN_FAILED: 397 dev_warn(&h->pdev->dev, 398 "%s: LUN failure detected\n", h->devname); 399 break; 400 case REPORT_LUNS_CHANGED: 401 dev_warn(&h->pdev->dev, 402 "%s: report LUN data changed\n", h->devname); 403 /* 404 * Note: this REPORT_LUNS_CHANGED condition only occurs on the external 405 * target (array) devices. 406 */ 407 break; 408 case POWER_OR_RESET: 409 dev_warn(&h->pdev->dev, 410 "%s: a power on or device reset detected\n", 411 h->devname); 412 break; 413 case UNIT_ATTENTION_CLEARED: 414 dev_warn(&h->pdev->dev, 415 "%s: unit attention cleared by another initiator\n", 416 h->devname); 417 break; 418 default: 419 dev_warn(&h->pdev->dev, 420 "%s: unknown unit attention detected\n", 421 h->devname); 422 break; 423 } 424 return 1; 425 } 426 427 static int check_for_busy(struct ctlr_info *h, struct CommandList *c) 428 { 429 if (c->err_info->CommandStatus != CMD_TARGET_STATUS || 430 (c->err_info->ScsiStatus != SAM_STAT_BUSY && 431 c->err_info->ScsiStatus != SAM_STAT_TASK_SET_FULL)) 432 return 0; 433 dev_warn(&h->pdev->dev, HPSA "device busy"); 434 return 1; 435 } 436 437 static u32 lockup_detected(struct ctlr_info *h); 438 static ssize_t host_show_lockup_detected(struct device *dev, 439 struct device_attribute *attr, char *buf) 440 { 441 int ld; 442 struct ctlr_info *h; 443 struct Scsi_Host *shost = class_to_shost(dev); 444 445 h = shost_to_hba(shost); 446 ld = lockup_detected(h); 447 448 return sprintf(buf, "ld=%d\n", ld); 449 } 450 451 static ssize_t host_store_hp_ssd_smart_path_status(struct device *dev, 452 struct device_attribute *attr, 453 const char *buf, size_t count) 454 { 455 int status, len; 456 struct ctlr_info *h; 457 struct Scsi_Host *shost = class_to_shost(dev); 458 char tmpbuf[10]; 459 460 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) 461 return -EACCES; 462 len = count > sizeof(tmpbuf) - 1 ? sizeof(tmpbuf) - 1 : count; 463 strncpy(tmpbuf, buf, len); 464 tmpbuf[len] = '\0'; 465 if (sscanf(tmpbuf, "%d", &status) != 1) 466 return -EINVAL; 467 h = shost_to_hba(shost); 468 h->acciopath_status = !!status; 469 dev_warn(&h->pdev->dev, 470 "hpsa: HP SSD Smart Path %s via sysfs update.\n", 471 h->acciopath_status ? "enabled" : "disabled"); 472 return count; 473 } 474 475 static ssize_t host_store_raid_offload_debug(struct device *dev, 476 struct device_attribute *attr, 477 const char *buf, size_t count) 478 { 479 int debug_level, len; 480 struct ctlr_info *h; 481 struct Scsi_Host *shost = class_to_shost(dev); 482 char tmpbuf[10]; 483 484 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) 485 return -EACCES; 486 len = count > sizeof(tmpbuf) - 1 ? sizeof(tmpbuf) - 1 : count; 487 strncpy(tmpbuf, buf, len); 488 tmpbuf[len] = '\0'; 489 if (sscanf(tmpbuf, "%d", &debug_level) != 1) 490 return -EINVAL; 491 if (debug_level < 0) 492 debug_level = 0; 493 h = shost_to_hba(shost); 494 h->raid_offload_debug = debug_level; 495 dev_warn(&h->pdev->dev, "hpsa: Set raid_offload_debug level = %d\n", 496 h->raid_offload_debug); 497 return count; 498 } 499 500 static ssize_t host_store_rescan(struct device *dev, 501 struct device_attribute *attr, 502 const char *buf, size_t count) 503 { 504 struct ctlr_info *h; 505 struct Scsi_Host *shost = class_to_shost(dev); 506 h = shost_to_hba(shost); 507 hpsa_scan_start(h->scsi_host); 508 return count; 509 } 510 511 static void hpsa_turn_off_ioaccel_for_device(struct hpsa_scsi_dev_t *device) 512 { 513 device->offload_enabled = 0; 514 device->offload_to_be_enabled = 0; 515 } 516 517 static ssize_t host_show_firmware_revision(struct device *dev, 518 struct device_attribute *attr, char *buf) 519 { 520 struct ctlr_info *h; 521 struct Scsi_Host *shost = class_to_shost(dev); 522 unsigned char *fwrev; 523 524 h = shost_to_hba(shost); 525 if (!h->hba_inquiry_data) 526 return 0; 527 fwrev = &h->hba_inquiry_data[32]; 528 return snprintf(buf, 20, "%c%c%c%c\n", 529 fwrev[0], fwrev[1], fwrev[2], fwrev[3]); 530 } 531 532 static ssize_t host_show_commands_outstanding(struct device *dev, 533 struct device_attribute *attr, char *buf) 534 { 535 struct Scsi_Host *shost = class_to_shost(dev); 536 struct ctlr_info *h = shost_to_hba(shost); 537 538 return snprintf(buf, 20, "%d\n", 539 atomic_read(&h->commands_outstanding)); 540 } 541 542 static ssize_t host_show_transport_mode(struct device *dev, 543 struct device_attribute *attr, char *buf) 544 { 545 struct ctlr_info *h; 546 struct Scsi_Host *shost = class_to_shost(dev); 547 548 h = shost_to_hba(shost); 549 return snprintf(buf, 20, "%s\n", 550 h->transMethod & CFGTBL_Trans_Performant ? 551 "performant" : "simple"); 552 } 553 554 static ssize_t host_show_hp_ssd_smart_path_status(struct device *dev, 555 struct device_attribute *attr, char *buf) 556 { 557 struct ctlr_info *h; 558 struct Scsi_Host *shost = class_to_shost(dev); 559 560 h = shost_to_hba(shost); 561 return snprintf(buf, 30, "HP SSD Smart Path %s\n", 562 (h->acciopath_status == 1) ? "enabled" : "disabled"); 563 } 564 565 /* List of controllers which cannot be hard reset on kexec with reset_devices */ 566 static u32 unresettable_controller[] = { 567 0x324a103C, /* Smart Array P712m */ 568 0x324b103C, /* Smart Array P711m */ 569 0x3223103C, /* Smart Array P800 */ 570 0x3234103C, /* Smart Array P400 */ 571 0x3235103C, /* Smart Array P400i */ 572 0x3211103C, /* Smart Array E200i */ 573 0x3212103C, /* Smart Array E200 */ 574 0x3213103C, /* Smart Array E200i */ 575 0x3214103C, /* Smart Array E200i */ 576 0x3215103C, /* Smart Array E200i */ 577 0x3237103C, /* Smart Array E500 */ 578 0x323D103C, /* Smart Array P700m */ 579 0x40800E11, /* Smart Array 5i */ 580 0x409C0E11, /* Smart Array 6400 */ 581 0x409D0E11, /* Smart Array 6400 EM */ 582 0x40700E11, /* Smart Array 5300 */ 583 0x40820E11, /* Smart Array 532 */ 584 0x40830E11, /* Smart Array 5312 */ 585 0x409A0E11, /* Smart Array 641 */ 586 0x409B0E11, /* Smart Array 642 */ 587 0x40910E11, /* Smart Array 6i */ 588 }; 589 590 /* List of controllers which cannot even be soft reset */ 591 static u32 soft_unresettable_controller[] = { 592 0x40800E11, /* Smart Array 5i */ 593 0x40700E11, /* Smart Array 5300 */ 594 0x40820E11, /* Smart Array 532 */ 595 0x40830E11, /* Smart Array 5312 */ 596 0x409A0E11, /* Smart Array 641 */ 597 0x409B0E11, /* Smart Array 642 */ 598 0x40910E11, /* Smart Array 6i */ 599 /* Exclude 640x boards. These are two pci devices in one slot 600 * which share a battery backed cache module. One controls the 601 * cache, the other accesses the cache through the one that controls 602 * it. If we reset the one controlling the cache, the other will 603 * likely not be happy. Just forbid resetting this conjoined mess. 604 * The 640x isn't really supported by hpsa anyway. 605 */ 606 0x409C0E11, /* Smart Array 6400 */ 607 0x409D0E11, /* Smart Array 6400 EM */ 608 }; 609 610 static int board_id_in_array(u32 a[], int nelems, u32 board_id) 611 { 612 int i; 613 614 for (i = 0; i < nelems; i++) 615 if (a[i] == board_id) 616 return 1; 617 return 0; 618 } 619 620 static int ctlr_is_hard_resettable(u32 board_id) 621 { 622 return !board_id_in_array(unresettable_controller, 623 ARRAY_SIZE(unresettable_controller), board_id); 624 } 625 626 static int ctlr_is_soft_resettable(u32 board_id) 627 { 628 return !board_id_in_array(soft_unresettable_controller, 629 ARRAY_SIZE(soft_unresettable_controller), board_id); 630 } 631 632 static int ctlr_is_resettable(u32 board_id) 633 { 634 return ctlr_is_hard_resettable(board_id) || 635 ctlr_is_soft_resettable(board_id); 636 } 637 638 static ssize_t host_show_resettable(struct device *dev, 639 struct device_attribute *attr, char *buf) 640 { 641 struct ctlr_info *h; 642 struct Scsi_Host *shost = class_to_shost(dev); 643 644 h = shost_to_hba(shost); 645 return snprintf(buf, 20, "%d\n", ctlr_is_resettable(h->board_id)); 646 } 647 648 static inline int is_logical_dev_addr_mode(unsigned char scsi3addr[]) 649 { 650 return (scsi3addr[3] & 0xC0) == 0x40; 651 } 652 653 static const char * const raid_label[] = { "0", "4", "1(+0)", "5", "5+1", "6", 654 "1(+0)ADM", "UNKNOWN", "PHYS DRV" 655 }; 656 #define HPSA_RAID_0 0 657 #define HPSA_RAID_4 1 658 #define HPSA_RAID_1 2 /* also used for RAID 10 */ 659 #define HPSA_RAID_5 3 /* also used for RAID 50 */ 660 #define HPSA_RAID_51 4 661 #define HPSA_RAID_6 5 /* also used for RAID 60 */ 662 #define HPSA_RAID_ADM 6 /* also used for RAID 1+0 ADM */ 663 #define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 2) 664 #define PHYSICAL_DRIVE (ARRAY_SIZE(raid_label) - 1) 665 666 static inline bool is_logical_device(struct hpsa_scsi_dev_t *device) 667 { 668 return !device->physical_device; 669 } 670 671 static ssize_t raid_level_show(struct device *dev, 672 struct device_attribute *attr, char *buf) 673 { 674 ssize_t l = 0; 675 unsigned char rlevel; 676 struct ctlr_info *h; 677 struct scsi_device *sdev; 678 struct hpsa_scsi_dev_t *hdev; 679 unsigned long flags; 680 681 sdev = to_scsi_device(dev); 682 h = sdev_to_hba(sdev); 683 spin_lock_irqsave(&h->lock, flags); 684 hdev = sdev->hostdata; 685 if (!hdev) { 686 spin_unlock_irqrestore(&h->lock, flags); 687 return -ENODEV; 688 } 689 690 /* Is this even a logical drive? */ 691 if (!is_logical_device(hdev)) { 692 spin_unlock_irqrestore(&h->lock, flags); 693 l = snprintf(buf, PAGE_SIZE, "N/A\n"); 694 return l; 695 } 696 697 rlevel = hdev->raid_level; 698 spin_unlock_irqrestore(&h->lock, flags); 699 if (rlevel > RAID_UNKNOWN) 700 rlevel = RAID_UNKNOWN; 701 l = snprintf(buf, PAGE_SIZE, "RAID %s\n", raid_label[rlevel]); 702 return l; 703 } 704 705 static ssize_t lunid_show(struct device *dev, 706 struct device_attribute *attr, char *buf) 707 { 708 struct ctlr_info *h; 709 struct scsi_device *sdev; 710 struct hpsa_scsi_dev_t *hdev; 711 unsigned long flags; 712 unsigned char lunid[8]; 713 714 sdev = to_scsi_device(dev); 715 h = sdev_to_hba(sdev); 716 spin_lock_irqsave(&h->lock, flags); 717 hdev = sdev->hostdata; 718 if (!hdev) { 719 spin_unlock_irqrestore(&h->lock, flags); 720 return -ENODEV; 721 } 722 memcpy(lunid, hdev->scsi3addr, sizeof(lunid)); 723 spin_unlock_irqrestore(&h->lock, flags); 724 return snprintf(buf, 20, "0x%8phN\n", lunid); 725 } 726 727 static ssize_t unique_id_show(struct device *dev, 728 struct device_attribute *attr, char *buf) 729 { 730 struct ctlr_info *h; 731 struct scsi_device *sdev; 732 struct hpsa_scsi_dev_t *hdev; 733 unsigned long flags; 734 unsigned char sn[16]; 735 736 sdev = to_scsi_device(dev); 737 h = sdev_to_hba(sdev); 738 spin_lock_irqsave(&h->lock, flags); 739 hdev = sdev->hostdata; 740 if (!hdev) { 741 spin_unlock_irqrestore(&h->lock, flags); 742 return -ENODEV; 743 } 744 memcpy(sn, hdev->device_id, sizeof(sn)); 745 spin_unlock_irqrestore(&h->lock, flags); 746 return snprintf(buf, 16 * 2 + 2, 747 "%02X%02X%02X%02X%02X%02X%02X%02X" 748 "%02X%02X%02X%02X%02X%02X%02X%02X\n", 749 sn[0], sn[1], sn[2], sn[3], 750 sn[4], sn[5], sn[6], sn[7], 751 sn[8], sn[9], sn[10], sn[11], 752 sn[12], sn[13], sn[14], sn[15]); 753 } 754 755 static ssize_t sas_address_show(struct device *dev, 756 struct device_attribute *attr, char *buf) 757 { 758 struct ctlr_info *h; 759 struct scsi_device *sdev; 760 struct hpsa_scsi_dev_t *hdev; 761 unsigned long flags; 762 u64 sas_address; 763 764 sdev = to_scsi_device(dev); 765 h = sdev_to_hba(sdev); 766 spin_lock_irqsave(&h->lock, flags); 767 hdev = sdev->hostdata; 768 if (!hdev || is_logical_device(hdev) || !hdev->expose_device) { 769 spin_unlock_irqrestore(&h->lock, flags); 770 return -ENODEV; 771 } 772 sas_address = hdev->sas_address; 773 spin_unlock_irqrestore(&h->lock, flags); 774 775 return snprintf(buf, PAGE_SIZE, "0x%016llx\n", sas_address); 776 } 777 778 static ssize_t host_show_hp_ssd_smart_path_enabled(struct device *dev, 779 struct device_attribute *attr, char *buf) 780 { 781 struct ctlr_info *h; 782 struct scsi_device *sdev; 783 struct hpsa_scsi_dev_t *hdev; 784 unsigned long flags; 785 int offload_enabled; 786 787 sdev = to_scsi_device(dev); 788 h = sdev_to_hba(sdev); 789 spin_lock_irqsave(&h->lock, flags); 790 hdev = sdev->hostdata; 791 if (!hdev) { 792 spin_unlock_irqrestore(&h->lock, flags); 793 return -ENODEV; 794 } 795 offload_enabled = hdev->offload_enabled; 796 spin_unlock_irqrestore(&h->lock, flags); 797 798 if (hdev->devtype == TYPE_DISK || hdev->devtype == TYPE_ZBC) 799 return snprintf(buf, 20, "%d\n", offload_enabled); 800 else 801 return snprintf(buf, 40, "%s\n", 802 "Not applicable for a controller"); 803 } 804 805 #define MAX_PATHS 8 806 static ssize_t path_info_show(struct device *dev, 807 struct device_attribute *attr, char *buf) 808 { 809 struct ctlr_info *h; 810 struct scsi_device *sdev; 811 struct hpsa_scsi_dev_t *hdev; 812 unsigned long flags; 813 int i; 814 int output_len = 0; 815 u8 box; 816 u8 bay; 817 u8 path_map_index = 0; 818 char *active; 819 unsigned char phys_connector[2]; 820 821 sdev = to_scsi_device(dev); 822 h = sdev_to_hba(sdev); 823 spin_lock_irqsave(&h->devlock, flags); 824 hdev = sdev->hostdata; 825 if (!hdev) { 826 spin_unlock_irqrestore(&h->devlock, flags); 827 return -ENODEV; 828 } 829 830 bay = hdev->bay; 831 for (i = 0; i < MAX_PATHS; i++) { 832 path_map_index = 1<<i; 833 if (i == hdev->active_path_index) 834 active = "Active"; 835 else if (hdev->path_map & path_map_index) 836 active = "Inactive"; 837 else 838 continue; 839 840 output_len += scnprintf(buf + output_len, 841 PAGE_SIZE - output_len, 842 "[%d:%d:%d:%d] %20.20s ", 843 h->scsi_host->host_no, 844 hdev->bus, hdev->target, hdev->lun, 845 scsi_device_type(hdev->devtype)); 846 847 if (hdev->devtype == TYPE_RAID || is_logical_device(hdev)) { 848 output_len += scnprintf(buf + output_len, 849 PAGE_SIZE - output_len, 850 "%s\n", active); 851 continue; 852 } 853 854 box = hdev->box[i]; 855 memcpy(&phys_connector, &hdev->phys_connector[i], 856 sizeof(phys_connector)); 857 if (phys_connector[0] < '0') 858 phys_connector[0] = '0'; 859 if (phys_connector[1] < '0') 860 phys_connector[1] = '0'; 861 output_len += scnprintf(buf + output_len, 862 PAGE_SIZE - output_len, 863 "PORT: %.2s ", 864 phys_connector); 865 if ((hdev->devtype == TYPE_DISK || hdev->devtype == TYPE_ZBC) && 866 hdev->expose_device) { 867 if (box == 0 || box == 0xFF) { 868 output_len += scnprintf(buf + output_len, 869 PAGE_SIZE - output_len, 870 "BAY: %hhu %s\n", 871 bay, active); 872 } else { 873 output_len += scnprintf(buf + output_len, 874 PAGE_SIZE - output_len, 875 "BOX: %hhu BAY: %hhu %s\n", 876 box, bay, active); 877 } 878 } else if (box != 0 && box != 0xFF) { 879 output_len += scnprintf(buf + output_len, 880 PAGE_SIZE - output_len, "BOX: %hhu %s\n", 881 box, active); 882 } else 883 output_len += scnprintf(buf + output_len, 884 PAGE_SIZE - output_len, "%s\n", active); 885 } 886 887 spin_unlock_irqrestore(&h->devlock, flags); 888 return output_len; 889 } 890 891 static ssize_t host_show_ctlr_num(struct device *dev, 892 struct device_attribute *attr, char *buf) 893 { 894 struct ctlr_info *h; 895 struct Scsi_Host *shost = class_to_shost(dev); 896 897 h = shost_to_hba(shost); 898 return snprintf(buf, 20, "%d\n", h->ctlr); 899 } 900 901 static ssize_t host_show_legacy_board(struct device *dev, 902 struct device_attribute *attr, char *buf) 903 { 904 struct ctlr_info *h; 905 struct Scsi_Host *shost = class_to_shost(dev); 906 907 h = shost_to_hba(shost); 908 return snprintf(buf, 20, "%d\n", h->legacy_board ? 1 : 0); 909 } 910 911 static DEVICE_ATTR_RO(raid_level); 912 static DEVICE_ATTR_RO(lunid); 913 static DEVICE_ATTR_RO(unique_id); 914 static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan); 915 static DEVICE_ATTR_RO(sas_address); 916 static DEVICE_ATTR(hp_ssd_smart_path_enabled, S_IRUGO, 917 host_show_hp_ssd_smart_path_enabled, NULL); 918 static DEVICE_ATTR_RO(path_info); 919 static DEVICE_ATTR(hp_ssd_smart_path_status, S_IWUSR|S_IRUGO|S_IROTH, 920 host_show_hp_ssd_smart_path_status, 921 host_store_hp_ssd_smart_path_status); 922 static DEVICE_ATTR(raid_offload_debug, S_IWUSR, NULL, 923 host_store_raid_offload_debug); 924 static DEVICE_ATTR(firmware_revision, S_IRUGO, 925 host_show_firmware_revision, NULL); 926 static DEVICE_ATTR(commands_outstanding, S_IRUGO, 927 host_show_commands_outstanding, NULL); 928 static DEVICE_ATTR(transport_mode, S_IRUGO, 929 host_show_transport_mode, NULL); 930 static DEVICE_ATTR(resettable, S_IRUGO, 931 host_show_resettable, NULL); 932 static DEVICE_ATTR(lockup_detected, S_IRUGO, 933 host_show_lockup_detected, NULL); 934 static DEVICE_ATTR(ctlr_num, S_IRUGO, 935 host_show_ctlr_num, NULL); 936 static DEVICE_ATTR(legacy_board, S_IRUGO, 937 host_show_legacy_board, NULL); 938 939 static struct device_attribute *hpsa_sdev_attrs[] = { 940 &dev_attr_raid_level, 941 &dev_attr_lunid, 942 &dev_attr_unique_id, 943 &dev_attr_hp_ssd_smart_path_enabled, 944 &dev_attr_path_info, 945 &dev_attr_sas_address, 946 NULL, 947 }; 948 949 static struct device_attribute *hpsa_shost_attrs[] = { 950 &dev_attr_rescan, 951 &dev_attr_firmware_revision, 952 &dev_attr_commands_outstanding, 953 &dev_attr_transport_mode, 954 &dev_attr_resettable, 955 &dev_attr_hp_ssd_smart_path_status, 956 &dev_attr_raid_offload_debug, 957 &dev_attr_lockup_detected, 958 &dev_attr_ctlr_num, 959 &dev_attr_legacy_board, 960 NULL, 961 }; 962 963 #define HPSA_NRESERVED_CMDS (HPSA_CMDS_RESERVED_FOR_DRIVER +\ 964 HPSA_MAX_CONCURRENT_PASSTHRUS) 965 966 static struct scsi_host_template hpsa_driver_template = { 967 .module = THIS_MODULE, 968 .name = HPSA, 969 .proc_name = HPSA, 970 .queuecommand = hpsa_scsi_queue_command, 971 .scan_start = hpsa_scan_start, 972 .scan_finished = hpsa_scan_finished, 973 .change_queue_depth = hpsa_change_queue_depth, 974 .this_id = -1, 975 .eh_device_reset_handler = hpsa_eh_device_reset_handler, 976 .ioctl = hpsa_ioctl, 977 .slave_alloc = hpsa_slave_alloc, 978 .slave_configure = hpsa_slave_configure, 979 .slave_destroy = hpsa_slave_destroy, 980 #ifdef CONFIG_COMPAT 981 .compat_ioctl = hpsa_compat_ioctl, 982 #endif 983 .sdev_attrs = hpsa_sdev_attrs, 984 .shost_attrs = hpsa_shost_attrs, 985 .max_sectors = 2048, 986 .no_write_same = 1, 987 }; 988 989 static inline u32 next_command(struct ctlr_info *h, u8 q) 990 { 991 u32 a; 992 struct reply_queue_buffer *rq = &h->reply_queue[q]; 993 994 if (h->transMethod & CFGTBL_Trans_io_accel1) 995 return h->access.command_completed(h, q); 996 997 if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant))) 998 return h->access.command_completed(h, q); 999 1000 if ((rq->head[rq->current_entry] & 1) == rq->wraparound) { 1001 a = rq->head[rq->current_entry]; 1002 rq->current_entry++; 1003 atomic_dec(&h->commands_outstanding); 1004 } else { 1005 a = FIFO_EMPTY; 1006 } 1007 /* Check for wraparound */ 1008 if (rq->current_entry == h->max_commands) { 1009 rq->current_entry = 0; 1010 rq->wraparound ^= 1; 1011 } 1012 return a; 1013 } 1014 1015 /* 1016 * There are some special bits in the bus address of the 1017 * command that we have to set for the controller to know 1018 * how to process the command: 1019 * 1020 * Normal performant mode: 1021 * bit 0: 1 means performant mode, 0 means simple mode. 1022 * bits 1-3 = block fetch table entry 1023 * bits 4-6 = command type (== 0) 1024 * 1025 * ioaccel1 mode: 1026 * bit 0 = "performant mode" bit. 1027 * bits 1-3 = block fetch table entry 1028 * bits 4-6 = command type (== 110) 1029 * (command type is needed because ioaccel1 mode 1030 * commands are submitted through the same register as normal 1031 * mode commands, so this is how the controller knows whether 1032 * the command is normal mode or ioaccel1 mode.) 1033 * 1034 * ioaccel2 mode: 1035 * bit 0 = "performant mode" bit. 1036 * bits 1-4 = block fetch table entry (note extra bit) 1037 * bits 4-6 = not needed, because ioaccel2 mode has 1038 * a separate special register for submitting commands. 1039 */ 1040 1041 /* 1042 * set_performant_mode: Modify the tag for cciss performant 1043 * set bit 0 for pull model, bits 3-1 for block fetch 1044 * register number 1045 */ 1046 #define DEFAULT_REPLY_QUEUE (-1) 1047 static void set_performant_mode(struct ctlr_info *h, struct CommandList *c, 1048 int reply_queue) 1049 { 1050 if (likely(h->transMethod & CFGTBL_Trans_Performant)) { 1051 c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1); 1052 if (unlikely(!h->msix_vectors)) 1053 return; 1054 c->Header.ReplyQueue = reply_queue; 1055 } 1056 } 1057 1058 static void set_ioaccel1_performant_mode(struct ctlr_info *h, 1059 struct CommandList *c, 1060 int reply_queue) 1061 { 1062 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[c->cmdindex]; 1063 1064 /* 1065 * Tell the controller to post the reply to the queue for this 1066 * processor. This seems to give the best I/O throughput. 1067 */ 1068 cp->ReplyQueue = reply_queue; 1069 /* 1070 * Set the bits in the address sent down to include: 1071 * - performant mode bit (bit 0) 1072 * - pull count (bits 1-3) 1073 * - command type (bits 4-6) 1074 */ 1075 c->busaddr |= 1 | (h->ioaccel1_blockFetchTable[c->Header.SGList] << 1) | 1076 IOACCEL1_BUSADDR_CMDTYPE; 1077 } 1078 1079 static void set_ioaccel2_tmf_performant_mode(struct ctlr_info *h, 1080 struct CommandList *c, 1081 int reply_queue) 1082 { 1083 struct hpsa_tmf_struct *cp = (struct hpsa_tmf_struct *) 1084 &h->ioaccel2_cmd_pool[c->cmdindex]; 1085 1086 /* Tell the controller to post the reply to the queue for this 1087 * processor. This seems to give the best I/O throughput. 1088 */ 1089 cp->reply_queue = reply_queue; 1090 /* Set the bits in the address sent down to include: 1091 * - performant mode bit not used in ioaccel mode 2 1092 * - pull count (bits 0-3) 1093 * - command type isn't needed for ioaccel2 1094 */ 1095 c->busaddr |= h->ioaccel2_blockFetchTable[0]; 1096 } 1097 1098 static void set_ioaccel2_performant_mode(struct ctlr_info *h, 1099 struct CommandList *c, 1100 int reply_queue) 1101 { 1102 struct io_accel2_cmd *cp = &h->ioaccel2_cmd_pool[c->cmdindex]; 1103 1104 /* 1105 * Tell the controller to post the reply to the queue for this 1106 * processor. This seems to give the best I/O throughput. 1107 */ 1108 cp->reply_queue = reply_queue; 1109 /* 1110 * Set the bits in the address sent down to include: 1111 * - performant mode bit not used in ioaccel mode 2 1112 * - pull count (bits 0-3) 1113 * - command type isn't needed for ioaccel2 1114 */ 1115 c->busaddr |= (h->ioaccel2_blockFetchTable[cp->sg_count]); 1116 } 1117 1118 static int is_firmware_flash_cmd(u8 *cdb) 1119 { 1120 return cdb[0] == BMIC_WRITE && cdb[6] == BMIC_FLASH_FIRMWARE; 1121 } 1122 1123 /* 1124 * During firmware flash, the heartbeat register may not update as frequently 1125 * as it should. So we dial down lockup detection during firmware flash. and 1126 * dial it back up when firmware flash completes. 1127 */ 1128 #define HEARTBEAT_SAMPLE_INTERVAL_DURING_FLASH (240 * HZ) 1129 #define HEARTBEAT_SAMPLE_INTERVAL (30 * HZ) 1130 #define HPSA_EVENT_MONITOR_INTERVAL (15 * HZ) 1131 static void dial_down_lockup_detection_during_fw_flash(struct ctlr_info *h, 1132 struct CommandList *c) 1133 { 1134 if (!is_firmware_flash_cmd(c->Request.CDB)) 1135 return; 1136 atomic_inc(&h->firmware_flash_in_progress); 1137 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL_DURING_FLASH; 1138 } 1139 1140 static void dial_up_lockup_detection_on_fw_flash_complete(struct ctlr_info *h, 1141 struct CommandList *c) 1142 { 1143 if (is_firmware_flash_cmd(c->Request.CDB) && 1144 atomic_dec_and_test(&h->firmware_flash_in_progress)) 1145 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL; 1146 } 1147 1148 static void __enqueue_cmd_and_start_io(struct ctlr_info *h, 1149 struct CommandList *c, int reply_queue) 1150 { 1151 dial_down_lockup_detection_during_fw_flash(h, c); 1152 atomic_inc(&h->commands_outstanding); 1153 if (c->device) 1154 atomic_inc(&c->device->commands_outstanding); 1155 1156 reply_queue = h->reply_map[raw_smp_processor_id()]; 1157 switch (c->cmd_type) { 1158 case CMD_IOACCEL1: 1159 set_ioaccel1_performant_mode(h, c, reply_queue); 1160 writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET); 1161 break; 1162 case CMD_IOACCEL2: 1163 set_ioaccel2_performant_mode(h, c, reply_queue); 1164 writel(c->busaddr, h->vaddr + IOACCEL2_INBOUND_POSTQ_32); 1165 break; 1166 case IOACCEL2_TMF: 1167 set_ioaccel2_tmf_performant_mode(h, c, reply_queue); 1168 writel(c->busaddr, h->vaddr + IOACCEL2_INBOUND_POSTQ_32); 1169 break; 1170 default: 1171 set_performant_mode(h, c, reply_queue); 1172 h->access.submit_command(h, c); 1173 } 1174 } 1175 1176 static void enqueue_cmd_and_start_io(struct ctlr_info *h, struct CommandList *c) 1177 { 1178 __enqueue_cmd_and_start_io(h, c, DEFAULT_REPLY_QUEUE); 1179 } 1180 1181 static inline int is_hba_lunid(unsigned char scsi3addr[]) 1182 { 1183 return memcmp(scsi3addr, RAID_CTLR_LUNID, 8) == 0; 1184 } 1185 1186 static inline int is_scsi_rev_5(struct ctlr_info *h) 1187 { 1188 if (!h->hba_inquiry_data) 1189 return 0; 1190 if ((h->hba_inquiry_data[2] & 0x07) == 5) 1191 return 1; 1192 return 0; 1193 } 1194 1195 static int hpsa_find_target_lun(struct ctlr_info *h, 1196 unsigned char scsi3addr[], int bus, int *target, int *lun) 1197 { 1198 /* finds an unused bus, target, lun for a new physical device 1199 * assumes h->devlock is held 1200 */ 1201 int i, found = 0; 1202 DECLARE_BITMAP(lun_taken, HPSA_MAX_DEVICES); 1203 1204 bitmap_zero(lun_taken, HPSA_MAX_DEVICES); 1205 1206 for (i = 0; i < h->ndevices; i++) { 1207 if (h->dev[i]->bus == bus && h->dev[i]->target != -1) 1208 __set_bit(h->dev[i]->target, lun_taken); 1209 } 1210 1211 i = find_first_zero_bit(lun_taken, HPSA_MAX_DEVICES); 1212 if (i < HPSA_MAX_DEVICES) { 1213 /* *bus = 1; */ 1214 *target = i; 1215 *lun = 0; 1216 found = 1; 1217 } 1218 return !found; 1219 } 1220 1221 static void hpsa_show_dev_msg(const char *level, struct ctlr_info *h, 1222 struct hpsa_scsi_dev_t *dev, char *description) 1223 { 1224 #define LABEL_SIZE 25 1225 char label[LABEL_SIZE]; 1226 1227 if (h == NULL || h->pdev == NULL || h->scsi_host == NULL) 1228 return; 1229 1230 switch (dev->devtype) { 1231 case TYPE_RAID: 1232 snprintf(label, LABEL_SIZE, "controller"); 1233 break; 1234 case TYPE_ENCLOSURE: 1235 snprintf(label, LABEL_SIZE, "enclosure"); 1236 break; 1237 case TYPE_DISK: 1238 case TYPE_ZBC: 1239 if (dev->external) 1240 snprintf(label, LABEL_SIZE, "external"); 1241 else if (!is_logical_dev_addr_mode(dev->scsi3addr)) 1242 snprintf(label, LABEL_SIZE, "%s", 1243 raid_label[PHYSICAL_DRIVE]); 1244 else 1245 snprintf(label, LABEL_SIZE, "RAID-%s", 1246 dev->raid_level > RAID_UNKNOWN ? "?" : 1247 raid_label[dev->raid_level]); 1248 break; 1249 case TYPE_ROM: 1250 snprintf(label, LABEL_SIZE, "rom"); 1251 break; 1252 case TYPE_TAPE: 1253 snprintf(label, LABEL_SIZE, "tape"); 1254 break; 1255 case TYPE_MEDIUM_CHANGER: 1256 snprintf(label, LABEL_SIZE, "changer"); 1257 break; 1258 default: 1259 snprintf(label, LABEL_SIZE, "UNKNOWN"); 1260 break; 1261 } 1262 1263 dev_printk(level, &h->pdev->dev, 1264 "scsi %d:%d:%d:%d: %s %s %.8s %.16s %s SSDSmartPathCap%c En%c Exp=%d\n", 1265 h->scsi_host->host_no, dev->bus, dev->target, dev->lun, 1266 description, 1267 scsi_device_type(dev->devtype), 1268 dev->vendor, 1269 dev->model, 1270 label, 1271 dev->offload_config ? '+' : '-', 1272 dev->offload_to_be_enabled ? '+' : '-', 1273 dev->expose_device); 1274 } 1275 1276 /* Add an entry into h->dev[] array. */ 1277 static int hpsa_scsi_add_entry(struct ctlr_info *h, 1278 struct hpsa_scsi_dev_t *device, 1279 struct hpsa_scsi_dev_t *added[], int *nadded) 1280 { 1281 /* assumes h->devlock is held */ 1282 int n = h->ndevices; 1283 int i; 1284 unsigned char addr1[8], addr2[8]; 1285 struct hpsa_scsi_dev_t *sd; 1286 1287 if (n >= HPSA_MAX_DEVICES) { 1288 dev_err(&h->pdev->dev, "too many devices, some will be " 1289 "inaccessible.\n"); 1290 return -1; 1291 } 1292 1293 /* physical devices do not have lun or target assigned until now. */ 1294 if (device->lun != -1) 1295 /* Logical device, lun is already assigned. */ 1296 goto lun_assigned; 1297 1298 /* If this device a non-zero lun of a multi-lun device 1299 * byte 4 of the 8-byte LUN addr will contain the logical 1300 * unit no, zero otherwise. 1301 */ 1302 if (device->scsi3addr[4] == 0) { 1303 /* This is not a non-zero lun of a multi-lun device */ 1304 if (hpsa_find_target_lun(h, device->scsi3addr, 1305 device->bus, &device->target, &device->lun) != 0) 1306 return -1; 1307 goto lun_assigned; 1308 } 1309 1310 /* This is a non-zero lun of a multi-lun device. 1311 * Search through our list and find the device which 1312 * has the same 8 byte LUN address, excepting byte 4 and 5. 1313 * Assign the same bus and target for this new LUN. 1314 * Use the logical unit number from the firmware. 1315 */ 1316 memcpy(addr1, device->scsi3addr, 8); 1317 addr1[4] = 0; 1318 addr1[5] = 0; 1319 for (i = 0; i < n; i++) { 1320 sd = h->dev[i]; 1321 memcpy(addr2, sd->scsi3addr, 8); 1322 addr2[4] = 0; 1323 addr2[5] = 0; 1324 /* differ only in byte 4 and 5? */ 1325 if (memcmp(addr1, addr2, 8) == 0) { 1326 device->bus = sd->bus; 1327 device->target = sd->target; 1328 device->lun = device->scsi3addr[4]; 1329 break; 1330 } 1331 } 1332 if (device->lun == -1) { 1333 dev_warn(&h->pdev->dev, "physical device with no LUN=0," 1334 " suspect firmware bug or unsupported hardware " 1335 "configuration.\n"); 1336 return -1; 1337 } 1338 1339 lun_assigned: 1340 1341 h->dev[n] = device; 1342 h->ndevices++; 1343 added[*nadded] = device; 1344 (*nadded)++; 1345 hpsa_show_dev_msg(KERN_INFO, h, device, 1346 device->expose_device ? "added" : "masked"); 1347 return 0; 1348 } 1349 1350 /* 1351 * Called during a scan operation. 1352 * 1353 * Update an entry in h->dev[] array. 1354 */ 1355 static void hpsa_scsi_update_entry(struct ctlr_info *h, 1356 int entry, struct hpsa_scsi_dev_t *new_entry) 1357 { 1358 /* assumes h->devlock is held */ 1359 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES); 1360 1361 /* Raid level changed. */ 1362 h->dev[entry]->raid_level = new_entry->raid_level; 1363 1364 /* 1365 * ioacccel_handle may have changed for a dual domain disk 1366 */ 1367 h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle; 1368 1369 /* Raid offload parameters changed. Careful about the ordering. */ 1370 if (new_entry->offload_config && new_entry->offload_to_be_enabled) { 1371 /* 1372 * if drive is newly offload_enabled, we want to copy the 1373 * raid map data first. If previously offload_enabled and 1374 * offload_config were set, raid map data had better be 1375 * the same as it was before. If raid map data has changed 1376 * then it had better be the case that 1377 * h->dev[entry]->offload_enabled is currently 0. 1378 */ 1379 h->dev[entry]->raid_map = new_entry->raid_map; 1380 h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle; 1381 } 1382 if (new_entry->offload_to_be_enabled) { 1383 h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle; 1384 wmb(); /* set ioaccel_handle *before* hba_ioaccel_enabled */ 1385 } 1386 h->dev[entry]->hba_ioaccel_enabled = new_entry->hba_ioaccel_enabled; 1387 h->dev[entry]->offload_config = new_entry->offload_config; 1388 h->dev[entry]->offload_to_mirror = new_entry->offload_to_mirror; 1389 h->dev[entry]->queue_depth = new_entry->queue_depth; 1390 1391 /* 1392 * We can turn off ioaccel offload now, but need to delay turning 1393 * ioaccel on until we can update h->dev[entry]->phys_disk[], but we 1394 * can't do that until all the devices are updated. 1395 */ 1396 h->dev[entry]->offload_to_be_enabled = new_entry->offload_to_be_enabled; 1397 1398 /* 1399 * turn ioaccel off immediately if told to do so. 1400 */ 1401 if (!new_entry->offload_to_be_enabled) 1402 h->dev[entry]->offload_enabled = 0; 1403 1404 hpsa_show_dev_msg(KERN_INFO, h, h->dev[entry], "updated"); 1405 } 1406 1407 /* Replace an entry from h->dev[] array. */ 1408 static void hpsa_scsi_replace_entry(struct ctlr_info *h, 1409 int entry, struct hpsa_scsi_dev_t *new_entry, 1410 struct hpsa_scsi_dev_t *added[], int *nadded, 1411 struct hpsa_scsi_dev_t *removed[], int *nremoved) 1412 { 1413 /* assumes h->devlock is held */ 1414 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES); 1415 removed[*nremoved] = h->dev[entry]; 1416 (*nremoved)++; 1417 1418 /* 1419 * New physical devices won't have target/lun assigned yet 1420 * so we need to preserve the values in the slot we are replacing. 1421 */ 1422 if (new_entry->target == -1) { 1423 new_entry->target = h->dev[entry]->target; 1424 new_entry->lun = h->dev[entry]->lun; 1425 } 1426 1427 h->dev[entry] = new_entry; 1428 added[*nadded] = new_entry; 1429 (*nadded)++; 1430 1431 hpsa_show_dev_msg(KERN_INFO, h, new_entry, "replaced"); 1432 } 1433 1434 /* Remove an entry from h->dev[] array. */ 1435 static void hpsa_scsi_remove_entry(struct ctlr_info *h, int entry, 1436 struct hpsa_scsi_dev_t *removed[], int *nremoved) 1437 { 1438 /* assumes h->devlock is held */ 1439 int i; 1440 struct hpsa_scsi_dev_t *sd; 1441 1442 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES); 1443 1444 sd = h->dev[entry]; 1445 removed[*nremoved] = h->dev[entry]; 1446 (*nremoved)++; 1447 1448 for (i = entry; i < h->ndevices-1; i++) 1449 h->dev[i] = h->dev[i+1]; 1450 h->ndevices--; 1451 hpsa_show_dev_msg(KERN_INFO, h, sd, "removed"); 1452 } 1453 1454 #define SCSI3ADDR_EQ(a, b) ( \ 1455 (a)[7] == (b)[7] && \ 1456 (a)[6] == (b)[6] && \ 1457 (a)[5] == (b)[5] && \ 1458 (a)[4] == (b)[4] && \ 1459 (a)[3] == (b)[3] && \ 1460 (a)[2] == (b)[2] && \ 1461 (a)[1] == (b)[1] && \ 1462 (a)[0] == (b)[0]) 1463 1464 static void fixup_botched_add(struct ctlr_info *h, 1465 struct hpsa_scsi_dev_t *added) 1466 { 1467 /* called when scsi_add_device fails in order to re-adjust 1468 * h->dev[] to match the mid layer's view. 1469 */ 1470 unsigned long flags; 1471 int i, j; 1472 1473 spin_lock_irqsave(&h->lock, flags); 1474 for (i = 0; i < h->ndevices; i++) { 1475 if (h->dev[i] == added) { 1476 for (j = i; j < h->ndevices-1; j++) 1477 h->dev[j] = h->dev[j+1]; 1478 h->ndevices--; 1479 break; 1480 } 1481 } 1482 spin_unlock_irqrestore(&h->lock, flags); 1483 kfree(added); 1484 } 1485 1486 static inline int device_is_the_same(struct hpsa_scsi_dev_t *dev1, 1487 struct hpsa_scsi_dev_t *dev2) 1488 { 1489 /* we compare everything except lun and target as these 1490 * are not yet assigned. Compare parts likely 1491 * to differ first 1492 */ 1493 if (memcmp(dev1->scsi3addr, dev2->scsi3addr, 1494 sizeof(dev1->scsi3addr)) != 0) 1495 return 0; 1496 if (memcmp(dev1->device_id, dev2->device_id, 1497 sizeof(dev1->device_id)) != 0) 1498 return 0; 1499 if (memcmp(dev1->model, dev2->model, sizeof(dev1->model)) != 0) 1500 return 0; 1501 if (memcmp(dev1->vendor, dev2->vendor, sizeof(dev1->vendor)) != 0) 1502 return 0; 1503 if (dev1->devtype != dev2->devtype) 1504 return 0; 1505 if (dev1->bus != dev2->bus) 1506 return 0; 1507 return 1; 1508 } 1509 1510 static inline int device_updated(struct hpsa_scsi_dev_t *dev1, 1511 struct hpsa_scsi_dev_t *dev2) 1512 { 1513 /* Device attributes that can change, but don't mean 1514 * that the device is a different device, nor that the OS 1515 * needs to be told anything about the change. 1516 */ 1517 if (dev1->raid_level != dev2->raid_level) 1518 return 1; 1519 if (dev1->offload_config != dev2->offload_config) 1520 return 1; 1521 if (dev1->offload_to_be_enabled != dev2->offload_to_be_enabled) 1522 return 1; 1523 if (!is_logical_dev_addr_mode(dev1->scsi3addr)) 1524 if (dev1->queue_depth != dev2->queue_depth) 1525 return 1; 1526 /* 1527 * This can happen for dual domain devices. An active 1528 * path change causes the ioaccel handle to change 1529 * 1530 * for example note the handle differences between p0 and p1 1531 * Device WWN ,WWN hash,Handle 1532 * D016 p0|0x3 [02]P2E:01:01,0x5000C5005FC4DACA,0x9B5616,0x01030003 1533 * p1 0x5000C5005FC4DAC9,0x6798C0,0x00040004 1534 */ 1535 if (dev1->ioaccel_handle != dev2->ioaccel_handle) 1536 return 1; 1537 return 0; 1538 } 1539 1540 /* Find needle in haystack. If exact match found, return DEVICE_SAME, 1541 * and return needle location in *index. If scsi3addr matches, but not 1542 * vendor, model, serial num, etc. return DEVICE_CHANGED, and return needle 1543 * location in *index. 1544 * In the case of a minor device attribute change, such as RAID level, just 1545 * return DEVICE_UPDATED, along with the updated device's location in index. 1546 * If needle not found, return DEVICE_NOT_FOUND. 1547 */ 1548 static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t *needle, 1549 struct hpsa_scsi_dev_t *haystack[], int haystack_size, 1550 int *index) 1551 { 1552 int i; 1553 #define DEVICE_NOT_FOUND 0 1554 #define DEVICE_CHANGED 1 1555 #define DEVICE_SAME 2 1556 #define DEVICE_UPDATED 3 1557 if (needle == NULL) 1558 return DEVICE_NOT_FOUND; 1559 1560 for (i = 0; i < haystack_size; i++) { 1561 if (haystack[i] == NULL) /* previously removed. */ 1562 continue; 1563 if (SCSI3ADDR_EQ(needle->scsi3addr, haystack[i]->scsi3addr)) { 1564 *index = i; 1565 if (device_is_the_same(needle, haystack[i])) { 1566 if (device_updated(needle, haystack[i])) 1567 return DEVICE_UPDATED; 1568 return DEVICE_SAME; 1569 } else { 1570 /* Keep offline devices offline */ 1571 if (needle->volume_offline) 1572 return DEVICE_NOT_FOUND; 1573 return DEVICE_CHANGED; 1574 } 1575 } 1576 } 1577 *index = -1; 1578 return DEVICE_NOT_FOUND; 1579 } 1580 1581 static void hpsa_monitor_offline_device(struct ctlr_info *h, 1582 unsigned char scsi3addr[]) 1583 { 1584 struct offline_device_entry *device; 1585 unsigned long flags; 1586 1587 /* Check to see if device is already on the list */ 1588 spin_lock_irqsave(&h->offline_device_lock, flags); 1589 list_for_each_entry(device, &h->offline_device_list, offline_list) { 1590 if (memcmp(device->scsi3addr, scsi3addr, 1591 sizeof(device->scsi3addr)) == 0) { 1592 spin_unlock_irqrestore(&h->offline_device_lock, flags); 1593 return; 1594 } 1595 } 1596 spin_unlock_irqrestore(&h->offline_device_lock, flags); 1597 1598 /* Device is not on the list, add it. */ 1599 device = kmalloc(sizeof(*device), GFP_KERNEL); 1600 if (!device) 1601 return; 1602 1603 memcpy(device->scsi3addr, scsi3addr, sizeof(device->scsi3addr)); 1604 spin_lock_irqsave(&h->offline_device_lock, flags); 1605 list_add_tail(&device->offline_list, &h->offline_device_list); 1606 spin_unlock_irqrestore(&h->offline_device_lock, flags); 1607 } 1608 1609 /* Print a message explaining various offline volume states */ 1610 static void hpsa_show_volume_status(struct ctlr_info *h, 1611 struct hpsa_scsi_dev_t *sd) 1612 { 1613 if (sd->volume_offline == HPSA_VPD_LV_STATUS_UNSUPPORTED) 1614 dev_info(&h->pdev->dev, 1615 "C%d:B%d:T%d:L%d Volume status is not available through vital product data pages.\n", 1616 h->scsi_host->host_no, 1617 sd->bus, sd->target, sd->lun); 1618 switch (sd->volume_offline) { 1619 case HPSA_LV_OK: 1620 break; 1621 case HPSA_LV_UNDERGOING_ERASE: 1622 dev_info(&h->pdev->dev, 1623 "C%d:B%d:T%d:L%d Volume is undergoing background erase process.\n", 1624 h->scsi_host->host_no, 1625 sd->bus, sd->target, sd->lun); 1626 break; 1627 case HPSA_LV_NOT_AVAILABLE: 1628 dev_info(&h->pdev->dev, 1629 "C%d:B%d:T%d:L%d Volume is waiting for transforming volume.\n", 1630 h->scsi_host->host_no, 1631 sd->bus, sd->target, sd->lun); 1632 break; 1633 case HPSA_LV_UNDERGOING_RPI: 1634 dev_info(&h->pdev->dev, 1635 "C%d:B%d:T%d:L%d Volume is undergoing rapid parity init.\n", 1636 h->scsi_host->host_no, 1637 sd->bus, sd->target, sd->lun); 1638 break; 1639 case HPSA_LV_PENDING_RPI: 1640 dev_info(&h->pdev->dev, 1641 "C%d:B%d:T%d:L%d Volume is queued for rapid parity initialization process.\n", 1642 h->scsi_host->host_no, 1643 sd->bus, sd->target, sd->lun); 1644 break; 1645 case HPSA_LV_ENCRYPTED_NO_KEY: 1646 dev_info(&h->pdev->dev, 1647 "C%d:B%d:T%d:L%d Volume is encrypted and cannot be accessed because key is not present.\n", 1648 h->scsi_host->host_no, 1649 sd->bus, sd->target, sd->lun); 1650 break; 1651 case HPSA_LV_PLAINTEXT_IN_ENCRYPT_ONLY_CONTROLLER: 1652 dev_info(&h->pdev->dev, 1653 "C%d:B%d:T%d:L%d Volume is not encrypted and cannot be accessed because controller is in encryption-only mode.\n", 1654 h->scsi_host->host_no, 1655 sd->bus, sd->target, sd->lun); 1656 break; 1657 case HPSA_LV_UNDERGOING_ENCRYPTION: 1658 dev_info(&h->pdev->dev, 1659 "C%d:B%d:T%d:L%d Volume is undergoing encryption process.\n", 1660 h->scsi_host->host_no, 1661 sd->bus, sd->target, sd->lun); 1662 break; 1663 case HPSA_LV_UNDERGOING_ENCRYPTION_REKEYING: 1664 dev_info(&h->pdev->dev, 1665 "C%d:B%d:T%d:L%d Volume is undergoing encryption re-keying process.\n", 1666 h->scsi_host->host_no, 1667 sd->bus, sd->target, sd->lun); 1668 break; 1669 case HPSA_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER: 1670 dev_info(&h->pdev->dev, 1671 "C%d:B%d:T%d:L%d Volume is encrypted and cannot be accessed because controller does not have encryption enabled.\n", 1672 h->scsi_host->host_no, 1673 sd->bus, sd->target, sd->lun); 1674 break; 1675 case HPSA_LV_PENDING_ENCRYPTION: 1676 dev_info(&h->pdev->dev, 1677 "C%d:B%d:T%d:L%d Volume is pending migration to encrypted state, but process has not started.\n", 1678 h->scsi_host->host_no, 1679 sd->bus, sd->target, sd->lun); 1680 break; 1681 case HPSA_LV_PENDING_ENCRYPTION_REKEYING: 1682 dev_info(&h->pdev->dev, 1683 "C%d:B%d:T%d:L%d Volume is encrypted and is pending encryption rekeying.\n", 1684 h->scsi_host->host_no, 1685 sd->bus, sd->target, sd->lun); 1686 break; 1687 } 1688 } 1689 1690 /* 1691 * Figure the list of physical drive pointers for a logical drive with 1692 * raid offload configured. 1693 */ 1694 static void hpsa_figure_phys_disk_ptrs(struct ctlr_info *h, 1695 struct hpsa_scsi_dev_t *dev[], int ndevices, 1696 struct hpsa_scsi_dev_t *logical_drive) 1697 { 1698 struct raid_map_data *map = &logical_drive->raid_map; 1699 struct raid_map_disk_data *dd = &map->data[0]; 1700 int i, j; 1701 int total_disks_per_row = le16_to_cpu(map->data_disks_per_row) + 1702 le16_to_cpu(map->metadata_disks_per_row); 1703 int nraid_map_entries = le16_to_cpu(map->row_cnt) * 1704 le16_to_cpu(map->layout_map_count) * 1705 total_disks_per_row; 1706 int nphys_disk = le16_to_cpu(map->layout_map_count) * 1707 total_disks_per_row; 1708 int qdepth; 1709 1710 if (nraid_map_entries > RAID_MAP_MAX_ENTRIES) 1711 nraid_map_entries = RAID_MAP_MAX_ENTRIES; 1712 1713 logical_drive->nphysical_disks = nraid_map_entries; 1714 1715 qdepth = 0; 1716 for (i = 0; i < nraid_map_entries; i++) { 1717 logical_drive->phys_disk[i] = NULL; 1718 if (!logical_drive->offload_config) 1719 continue; 1720 for (j = 0; j < ndevices; j++) { 1721 if (dev[j] == NULL) 1722 continue; 1723 if (dev[j]->devtype != TYPE_DISK && 1724 dev[j]->devtype != TYPE_ZBC) 1725 continue; 1726 if (is_logical_device(dev[j])) 1727 continue; 1728 if (dev[j]->ioaccel_handle != dd[i].ioaccel_handle) 1729 continue; 1730 1731 logical_drive->phys_disk[i] = dev[j]; 1732 if (i < nphys_disk) 1733 qdepth = min(h->nr_cmds, qdepth + 1734 logical_drive->phys_disk[i]->queue_depth); 1735 break; 1736 } 1737 1738 /* 1739 * This can happen if a physical drive is removed and 1740 * the logical drive is degraded. In that case, the RAID 1741 * map data will refer to a physical disk which isn't actually 1742 * present. And in that case offload_enabled should already 1743 * be 0, but we'll turn it off here just in case 1744 */ 1745 if (!logical_drive->phys_disk[i]) { 1746 dev_warn(&h->pdev->dev, 1747 "%s: [%d:%d:%d:%d] A phys disk component of LV is missing, turning off offload_enabled for LV.\n", 1748 __func__, 1749 h->scsi_host->host_no, logical_drive->bus, 1750 logical_drive->target, logical_drive->lun); 1751 hpsa_turn_off_ioaccel_for_device(logical_drive); 1752 logical_drive->queue_depth = 8; 1753 } 1754 } 1755 if (nraid_map_entries) 1756 /* 1757 * This is correct for reads, too high for full stripe writes, 1758 * way too high for partial stripe writes 1759 */ 1760 logical_drive->queue_depth = qdepth; 1761 else { 1762 if (logical_drive->external) 1763 logical_drive->queue_depth = EXTERNAL_QD; 1764 else 1765 logical_drive->queue_depth = h->nr_cmds; 1766 } 1767 } 1768 1769 static void hpsa_update_log_drive_phys_drive_ptrs(struct ctlr_info *h, 1770 struct hpsa_scsi_dev_t *dev[], int ndevices) 1771 { 1772 int i; 1773 1774 for (i = 0; i < ndevices; i++) { 1775 if (dev[i] == NULL) 1776 continue; 1777 if (dev[i]->devtype != TYPE_DISK && 1778 dev[i]->devtype != TYPE_ZBC) 1779 continue; 1780 if (!is_logical_device(dev[i])) 1781 continue; 1782 1783 /* 1784 * If offload is currently enabled, the RAID map and 1785 * phys_disk[] assignment *better* not be changing 1786 * because we would be changing ioaccel phsy_disk[] pointers 1787 * on a ioaccel volume processing I/O requests. 1788 * 1789 * If an ioaccel volume status changed, initially because it was 1790 * re-configured and thus underwent a transformation, or 1791 * a drive failed, we would have received a state change 1792 * request and ioaccel should have been turned off. When the 1793 * transformation completes, we get another state change 1794 * request to turn ioaccel back on. In this case, we need 1795 * to update the ioaccel information. 1796 * 1797 * Thus: If it is not currently enabled, but will be after 1798 * the scan completes, make sure the ioaccel pointers 1799 * are up to date. 1800 */ 1801 1802 if (!dev[i]->offload_enabled && dev[i]->offload_to_be_enabled) 1803 hpsa_figure_phys_disk_ptrs(h, dev, ndevices, dev[i]); 1804 } 1805 } 1806 1807 static int hpsa_add_device(struct ctlr_info *h, struct hpsa_scsi_dev_t *device) 1808 { 1809 int rc = 0; 1810 1811 if (!h->scsi_host) 1812 return 1; 1813 1814 if (is_logical_device(device)) /* RAID */ 1815 rc = scsi_add_device(h->scsi_host, device->bus, 1816 device->target, device->lun); 1817 else /* HBA */ 1818 rc = hpsa_add_sas_device(h->sas_host, device); 1819 1820 return rc; 1821 } 1822 1823 static int hpsa_find_outstanding_commands_for_dev(struct ctlr_info *h, 1824 struct hpsa_scsi_dev_t *dev) 1825 { 1826 int i; 1827 int count = 0; 1828 1829 for (i = 0; i < h->nr_cmds; i++) { 1830 struct CommandList *c = h->cmd_pool + i; 1831 int refcount = atomic_inc_return(&c->refcount); 1832 1833 if (refcount > 1 && hpsa_cmd_dev_match(h, c, dev, 1834 dev->scsi3addr)) { 1835 unsigned long flags; 1836 1837 spin_lock_irqsave(&h->lock, flags); /* Implied MB */ 1838 if (!hpsa_is_cmd_idle(c)) 1839 ++count; 1840 spin_unlock_irqrestore(&h->lock, flags); 1841 } 1842 1843 cmd_free(h, c); 1844 } 1845 1846 return count; 1847 } 1848 1849 #define NUM_WAIT 20 1850 static void hpsa_wait_for_outstanding_commands_for_dev(struct ctlr_info *h, 1851 struct hpsa_scsi_dev_t *device) 1852 { 1853 int cmds = 0; 1854 int waits = 0; 1855 int num_wait = NUM_WAIT; 1856 1857 if (device->external) 1858 num_wait = HPSA_EH_PTRAID_TIMEOUT; 1859 1860 while (1) { 1861 cmds = hpsa_find_outstanding_commands_for_dev(h, device); 1862 if (cmds == 0) 1863 break; 1864 if (++waits > num_wait) 1865 break; 1866 msleep(1000); 1867 } 1868 1869 if (waits > num_wait) { 1870 dev_warn(&h->pdev->dev, 1871 "%s: removing device [%d:%d:%d:%d] with %d outstanding commands!\n", 1872 __func__, 1873 h->scsi_host->host_no, 1874 device->bus, device->target, device->lun, cmds); 1875 } 1876 } 1877 1878 static void hpsa_remove_device(struct ctlr_info *h, 1879 struct hpsa_scsi_dev_t *device) 1880 { 1881 struct scsi_device *sdev = NULL; 1882 1883 if (!h->scsi_host) 1884 return; 1885 1886 /* 1887 * Allow for commands to drain 1888 */ 1889 device->removed = 1; 1890 hpsa_wait_for_outstanding_commands_for_dev(h, device); 1891 1892 if (is_logical_device(device)) { /* RAID */ 1893 sdev = scsi_device_lookup(h->scsi_host, device->bus, 1894 device->target, device->lun); 1895 if (sdev) { 1896 scsi_remove_device(sdev); 1897 scsi_device_put(sdev); 1898 } else { 1899 /* 1900 * We don't expect to get here. Future commands 1901 * to this device will get a selection timeout as 1902 * if the device were gone. 1903 */ 1904 hpsa_show_dev_msg(KERN_WARNING, h, device, 1905 "didn't find device for removal."); 1906 } 1907 } else { /* HBA */ 1908 1909 hpsa_remove_sas_device(device); 1910 } 1911 } 1912 1913 static void adjust_hpsa_scsi_table(struct ctlr_info *h, 1914 struct hpsa_scsi_dev_t *sd[], int nsds) 1915 { 1916 /* sd contains scsi3 addresses and devtypes, and inquiry 1917 * data. This function takes what's in sd to be the current 1918 * reality and updates h->dev[] to reflect that reality. 1919 */ 1920 int i, entry, device_change, changes = 0; 1921 struct hpsa_scsi_dev_t *csd; 1922 unsigned long flags; 1923 struct hpsa_scsi_dev_t **added, **removed; 1924 int nadded, nremoved; 1925 1926 /* 1927 * A reset can cause a device status to change 1928 * re-schedule the scan to see what happened. 1929 */ 1930 spin_lock_irqsave(&h->reset_lock, flags); 1931 if (h->reset_in_progress) { 1932 h->drv_req_rescan = 1; 1933 spin_unlock_irqrestore(&h->reset_lock, flags); 1934 return; 1935 } 1936 spin_unlock_irqrestore(&h->reset_lock, flags); 1937 1938 added = kcalloc(HPSA_MAX_DEVICES, sizeof(*added), GFP_KERNEL); 1939 removed = kcalloc(HPSA_MAX_DEVICES, sizeof(*removed), GFP_KERNEL); 1940 1941 if (!added || !removed) { 1942 dev_warn(&h->pdev->dev, "out of memory in " 1943 "adjust_hpsa_scsi_table\n"); 1944 goto free_and_out; 1945 } 1946 1947 spin_lock_irqsave(&h->devlock, flags); 1948 1949 /* find any devices in h->dev[] that are not in 1950 * sd[] and remove them from h->dev[], and for any 1951 * devices which have changed, remove the old device 1952 * info and add the new device info. 1953 * If minor device attributes change, just update 1954 * the existing device structure. 1955 */ 1956 i = 0; 1957 nremoved = 0; 1958 nadded = 0; 1959 while (i < h->ndevices) { 1960 csd = h->dev[i]; 1961 device_change = hpsa_scsi_find_entry(csd, sd, nsds, &entry); 1962 if (device_change == DEVICE_NOT_FOUND) { 1963 changes++; 1964 hpsa_scsi_remove_entry(h, i, removed, &nremoved); 1965 continue; /* remove ^^^, hence i not incremented */ 1966 } else if (device_change == DEVICE_CHANGED) { 1967 changes++; 1968 hpsa_scsi_replace_entry(h, i, sd[entry], 1969 added, &nadded, removed, &nremoved); 1970 /* Set it to NULL to prevent it from being freed 1971 * at the bottom of hpsa_update_scsi_devices() 1972 */ 1973 sd[entry] = NULL; 1974 } else if (device_change == DEVICE_UPDATED) { 1975 hpsa_scsi_update_entry(h, i, sd[entry]); 1976 } 1977 i++; 1978 } 1979 1980 /* Now, make sure every device listed in sd[] is also 1981 * listed in h->dev[], adding them if they aren't found 1982 */ 1983 1984 for (i = 0; i < nsds; i++) { 1985 if (!sd[i]) /* if already added above. */ 1986 continue; 1987 1988 /* Don't add devices which are NOT READY, FORMAT IN PROGRESS 1989 * as the SCSI mid-layer does not handle such devices well. 1990 * It relentlessly loops sending TUR at 3Hz, then READ(10) 1991 * at 160Hz, and prevents the system from coming up. 1992 */ 1993 if (sd[i]->volume_offline) { 1994 hpsa_show_volume_status(h, sd[i]); 1995 hpsa_show_dev_msg(KERN_INFO, h, sd[i], "offline"); 1996 continue; 1997 } 1998 1999 device_change = hpsa_scsi_find_entry(sd[i], h->dev, 2000 h->ndevices, &entry); 2001 if (device_change == DEVICE_NOT_FOUND) { 2002 changes++; 2003 if (hpsa_scsi_add_entry(h, sd[i], added, &nadded) != 0) 2004 break; 2005 sd[i] = NULL; /* prevent from being freed later. */ 2006 } else if (device_change == DEVICE_CHANGED) { 2007 /* should never happen... */ 2008 changes++; 2009 dev_warn(&h->pdev->dev, 2010 "device unexpectedly changed.\n"); 2011 /* but if it does happen, we just ignore that device */ 2012 } 2013 } 2014 hpsa_update_log_drive_phys_drive_ptrs(h, h->dev, h->ndevices); 2015 2016 /* 2017 * Now that h->dev[]->phys_disk[] is coherent, we can enable 2018 * any logical drives that need it enabled. 2019 * 2020 * The raid map should be current by now. 2021 * 2022 * We are updating the device list used for I/O requests. 2023 */ 2024 for (i = 0; i < h->ndevices; i++) { 2025 if (h->dev[i] == NULL) 2026 continue; 2027 h->dev[i]->offload_enabled = h->dev[i]->offload_to_be_enabled; 2028 } 2029 2030 spin_unlock_irqrestore(&h->devlock, flags); 2031 2032 /* Monitor devices which are in one of several NOT READY states to be 2033 * brought online later. This must be done without holding h->devlock, 2034 * so don't touch h->dev[] 2035 */ 2036 for (i = 0; i < nsds; i++) { 2037 if (!sd[i]) /* if already added above. */ 2038 continue; 2039 if (sd[i]->volume_offline) 2040 hpsa_monitor_offline_device(h, sd[i]->scsi3addr); 2041 } 2042 2043 /* Don't notify scsi mid layer of any changes the first time through 2044 * (or if there are no changes) scsi_scan_host will do it later the 2045 * first time through. 2046 */ 2047 if (!changes) 2048 goto free_and_out; 2049 2050 /* Notify scsi mid layer of any removed devices */ 2051 for (i = 0; i < nremoved; i++) { 2052 if (removed[i] == NULL) 2053 continue; 2054 if (removed[i]->expose_device) 2055 hpsa_remove_device(h, removed[i]); 2056 kfree(removed[i]); 2057 removed[i] = NULL; 2058 } 2059 2060 /* Notify scsi mid layer of any added devices */ 2061 for (i = 0; i < nadded; i++) { 2062 int rc = 0; 2063 2064 if (added[i] == NULL) 2065 continue; 2066 if (!(added[i]->expose_device)) 2067 continue; 2068 rc = hpsa_add_device(h, added[i]); 2069 if (!rc) 2070 continue; 2071 dev_warn(&h->pdev->dev, 2072 "addition failed %d, device not added.", rc); 2073 /* now we have to remove it from h->dev, 2074 * since it didn't get added to scsi mid layer 2075 */ 2076 fixup_botched_add(h, added[i]); 2077 h->drv_req_rescan = 1; 2078 } 2079 2080 free_and_out: 2081 kfree(added); 2082 kfree(removed); 2083 } 2084 2085 /* 2086 * Lookup bus/target/lun and return corresponding struct hpsa_scsi_dev_t * 2087 * Assume's h->devlock is held. 2088 */ 2089 static struct hpsa_scsi_dev_t *lookup_hpsa_scsi_dev(struct ctlr_info *h, 2090 int bus, int target, int lun) 2091 { 2092 int i; 2093 struct hpsa_scsi_dev_t *sd; 2094 2095 for (i = 0; i < h->ndevices; i++) { 2096 sd = h->dev[i]; 2097 if (sd->bus == bus && sd->target == target && sd->lun == lun) 2098 return sd; 2099 } 2100 return NULL; 2101 } 2102 2103 static int hpsa_slave_alloc(struct scsi_device *sdev) 2104 { 2105 struct hpsa_scsi_dev_t *sd = NULL; 2106 unsigned long flags; 2107 struct ctlr_info *h; 2108 2109 h = sdev_to_hba(sdev); 2110 spin_lock_irqsave(&h->devlock, flags); 2111 if (sdev_channel(sdev) == HPSA_PHYSICAL_DEVICE_BUS) { 2112 struct scsi_target *starget; 2113 struct sas_rphy *rphy; 2114 2115 starget = scsi_target(sdev); 2116 rphy = target_to_rphy(starget); 2117 sd = hpsa_find_device_by_sas_rphy(h, rphy); 2118 if (sd) { 2119 sd->target = sdev_id(sdev); 2120 sd->lun = sdev->lun; 2121 } 2122 } 2123 if (!sd) 2124 sd = lookup_hpsa_scsi_dev(h, sdev_channel(sdev), 2125 sdev_id(sdev), sdev->lun); 2126 2127 if (sd && sd->expose_device) { 2128 atomic_set(&sd->ioaccel_cmds_out, 0); 2129 sdev->hostdata = sd; 2130 } else 2131 sdev->hostdata = NULL; 2132 spin_unlock_irqrestore(&h->devlock, flags); 2133 return 0; 2134 } 2135 2136 /* configure scsi device based on internal per-device structure */ 2137 #define CTLR_TIMEOUT (120 * HZ) 2138 static int hpsa_slave_configure(struct scsi_device *sdev) 2139 { 2140 struct hpsa_scsi_dev_t *sd; 2141 int queue_depth; 2142 2143 sd = sdev->hostdata; 2144 sdev->no_uld_attach = !sd || !sd->expose_device; 2145 2146 if (sd) { 2147 sd->was_removed = 0; 2148 queue_depth = sd->queue_depth != 0 ? 2149 sd->queue_depth : sdev->host->can_queue; 2150 if (sd->external) { 2151 queue_depth = EXTERNAL_QD; 2152 sdev->eh_timeout = HPSA_EH_PTRAID_TIMEOUT; 2153 blk_queue_rq_timeout(sdev->request_queue, 2154 HPSA_EH_PTRAID_TIMEOUT); 2155 } 2156 if (is_hba_lunid(sd->scsi3addr)) { 2157 sdev->eh_timeout = CTLR_TIMEOUT; 2158 blk_queue_rq_timeout(sdev->request_queue, CTLR_TIMEOUT); 2159 } 2160 } else { 2161 queue_depth = sdev->host->can_queue; 2162 } 2163 2164 scsi_change_queue_depth(sdev, queue_depth); 2165 2166 return 0; 2167 } 2168 2169 static void hpsa_slave_destroy(struct scsi_device *sdev) 2170 { 2171 struct hpsa_scsi_dev_t *hdev = NULL; 2172 2173 hdev = sdev->hostdata; 2174 2175 if (hdev) 2176 hdev->was_removed = 1; 2177 } 2178 2179 static void hpsa_free_ioaccel2_sg_chain_blocks(struct ctlr_info *h) 2180 { 2181 int i; 2182 2183 if (!h->ioaccel2_cmd_sg_list) 2184 return; 2185 for (i = 0; i < h->nr_cmds; i++) { 2186 kfree(h->ioaccel2_cmd_sg_list[i]); 2187 h->ioaccel2_cmd_sg_list[i] = NULL; 2188 } 2189 kfree(h->ioaccel2_cmd_sg_list); 2190 h->ioaccel2_cmd_sg_list = NULL; 2191 } 2192 2193 static int hpsa_allocate_ioaccel2_sg_chain_blocks(struct ctlr_info *h) 2194 { 2195 int i; 2196 2197 if (h->chainsize <= 0) 2198 return 0; 2199 2200 h->ioaccel2_cmd_sg_list = 2201 kcalloc(h->nr_cmds, sizeof(*h->ioaccel2_cmd_sg_list), 2202 GFP_KERNEL); 2203 if (!h->ioaccel2_cmd_sg_list) 2204 return -ENOMEM; 2205 for (i = 0; i < h->nr_cmds; i++) { 2206 h->ioaccel2_cmd_sg_list[i] = 2207 kmalloc_array(h->maxsgentries, 2208 sizeof(*h->ioaccel2_cmd_sg_list[i]), 2209 GFP_KERNEL); 2210 if (!h->ioaccel2_cmd_sg_list[i]) 2211 goto clean; 2212 } 2213 return 0; 2214 2215 clean: 2216 hpsa_free_ioaccel2_sg_chain_blocks(h); 2217 return -ENOMEM; 2218 } 2219 2220 static void hpsa_free_sg_chain_blocks(struct ctlr_info *h) 2221 { 2222 int i; 2223 2224 if (!h->cmd_sg_list) 2225 return; 2226 for (i = 0; i < h->nr_cmds; i++) { 2227 kfree(h->cmd_sg_list[i]); 2228 h->cmd_sg_list[i] = NULL; 2229 } 2230 kfree(h->cmd_sg_list); 2231 h->cmd_sg_list = NULL; 2232 } 2233 2234 static int hpsa_alloc_sg_chain_blocks(struct ctlr_info *h) 2235 { 2236 int i; 2237 2238 if (h->chainsize <= 0) 2239 return 0; 2240 2241 h->cmd_sg_list = kcalloc(h->nr_cmds, sizeof(*h->cmd_sg_list), 2242 GFP_KERNEL); 2243 if (!h->cmd_sg_list) 2244 return -ENOMEM; 2245 2246 for (i = 0; i < h->nr_cmds; i++) { 2247 h->cmd_sg_list[i] = kmalloc_array(h->chainsize, 2248 sizeof(*h->cmd_sg_list[i]), 2249 GFP_KERNEL); 2250 if (!h->cmd_sg_list[i]) 2251 goto clean; 2252 2253 } 2254 return 0; 2255 2256 clean: 2257 hpsa_free_sg_chain_blocks(h); 2258 return -ENOMEM; 2259 } 2260 2261 static int hpsa_map_ioaccel2_sg_chain_block(struct ctlr_info *h, 2262 struct io_accel2_cmd *cp, struct CommandList *c) 2263 { 2264 struct ioaccel2_sg_element *chain_block; 2265 u64 temp64; 2266 u32 chain_size; 2267 2268 chain_block = h->ioaccel2_cmd_sg_list[c->cmdindex]; 2269 chain_size = le32_to_cpu(cp->sg[0].length); 2270 temp64 = dma_map_single(&h->pdev->dev, chain_block, chain_size, 2271 DMA_TO_DEVICE); 2272 if (dma_mapping_error(&h->pdev->dev, temp64)) { 2273 /* prevent subsequent unmapping */ 2274 cp->sg->address = 0; 2275 return -1; 2276 } 2277 cp->sg->address = cpu_to_le64(temp64); 2278 return 0; 2279 } 2280 2281 static void hpsa_unmap_ioaccel2_sg_chain_block(struct ctlr_info *h, 2282 struct io_accel2_cmd *cp) 2283 { 2284 struct ioaccel2_sg_element *chain_sg; 2285 u64 temp64; 2286 u32 chain_size; 2287 2288 chain_sg = cp->sg; 2289 temp64 = le64_to_cpu(chain_sg->address); 2290 chain_size = le32_to_cpu(cp->sg[0].length); 2291 dma_unmap_single(&h->pdev->dev, temp64, chain_size, DMA_TO_DEVICE); 2292 } 2293 2294 static int hpsa_map_sg_chain_block(struct ctlr_info *h, 2295 struct CommandList *c) 2296 { 2297 struct SGDescriptor *chain_sg, *chain_block; 2298 u64 temp64; 2299 u32 chain_len; 2300 2301 chain_sg = &c->SG[h->max_cmd_sg_entries - 1]; 2302 chain_block = h->cmd_sg_list[c->cmdindex]; 2303 chain_sg->Ext = cpu_to_le32(HPSA_SG_CHAIN); 2304 chain_len = sizeof(*chain_sg) * 2305 (le16_to_cpu(c->Header.SGTotal) - h->max_cmd_sg_entries); 2306 chain_sg->Len = cpu_to_le32(chain_len); 2307 temp64 = dma_map_single(&h->pdev->dev, chain_block, chain_len, 2308 DMA_TO_DEVICE); 2309 if (dma_mapping_error(&h->pdev->dev, temp64)) { 2310 /* prevent subsequent unmapping */ 2311 chain_sg->Addr = cpu_to_le64(0); 2312 return -1; 2313 } 2314 chain_sg->Addr = cpu_to_le64(temp64); 2315 return 0; 2316 } 2317 2318 static void hpsa_unmap_sg_chain_block(struct ctlr_info *h, 2319 struct CommandList *c) 2320 { 2321 struct SGDescriptor *chain_sg; 2322 2323 if (le16_to_cpu(c->Header.SGTotal) <= h->max_cmd_sg_entries) 2324 return; 2325 2326 chain_sg = &c->SG[h->max_cmd_sg_entries - 1]; 2327 dma_unmap_single(&h->pdev->dev, le64_to_cpu(chain_sg->Addr), 2328 le32_to_cpu(chain_sg->Len), DMA_TO_DEVICE); 2329 } 2330 2331 2332 /* Decode the various types of errors on ioaccel2 path. 2333 * Return 1 for any error that should generate a RAID path retry. 2334 * Return 0 for errors that don't require a RAID path retry. 2335 */ 2336 static int handle_ioaccel_mode2_error(struct ctlr_info *h, 2337 struct CommandList *c, 2338 struct scsi_cmnd *cmd, 2339 struct io_accel2_cmd *c2, 2340 struct hpsa_scsi_dev_t *dev) 2341 { 2342 int data_len; 2343 int retry = 0; 2344 u32 ioaccel2_resid = 0; 2345 2346 switch (c2->error_data.serv_response) { 2347 case IOACCEL2_SERV_RESPONSE_COMPLETE: 2348 switch (c2->error_data.status) { 2349 case IOACCEL2_STATUS_SR_TASK_COMP_GOOD: 2350 if (cmd) 2351 cmd->result = 0; 2352 break; 2353 case IOACCEL2_STATUS_SR_TASK_COMP_CHK_COND: 2354 cmd->result |= SAM_STAT_CHECK_CONDITION; 2355 if (c2->error_data.data_present != 2356 IOACCEL2_SENSE_DATA_PRESENT) { 2357 memset(cmd->sense_buffer, 0, 2358 SCSI_SENSE_BUFFERSIZE); 2359 break; 2360 } 2361 /* copy the sense data */ 2362 data_len = c2->error_data.sense_data_len; 2363 if (data_len > SCSI_SENSE_BUFFERSIZE) 2364 data_len = SCSI_SENSE_BUFFERSIZE; 2365 if (data_len > sizeof(c2->error_data.sense_data_buff)) 2366 data_len = 2367 sizeof(c2->error_data.sense_data_buff); 2368 memcpy(cmd->sense_buffer, 2369 c2->error_data.sense_data_buff, data_len); 2370 retry = 1; 2371 break; 2372 case IOACCEL2_STATUS_SR_TASK_COMP_BUSY: 2373 retry = 1; 2374 break; 2375 case IOACCEL2_STATUS_SR_TASK_COMP_RES_CON: 2376 retry = 1; 2377 break; 2378 case IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL: 2379 retry = 1; 2380 break; 2381 case IOACCEL2_STATUS_SR_TASK_COMP_ABORTED: 2382 retry = 1; 2383 break; 2384 default: 2385 retry = 1; 2386 break; 2387 } 2388 break; 2389 case IOACCEL2_SERV_RESPONSE_FAILURE: 2390 switch (c2->error_data.status) { 2391 case IOACCEL2_STATUS_SR_IO_ERROR: 2392 case IOACCEL2_STATUS_SR_IO_ABORTED: 2393 case IOACCEL2_STATUS_SR_OVERRUN: 2394 retry = 1; 2395 break; 2396 case IOACCEL2_STATUS_SR_UNDERRUN: 2397 cmd->result = (DID_OK << 16); /* host byte */ 2398 cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */ 2399 ioaccel2_resid = get_unaligned_le32( 2400 &c2->error_data.resid_cnt[0]); 2401 scsi_set_resid(cmd, ioaccel2_resid); 2402 break; 2403 case IOACCEL2_STATUS_SR_NO_PATH_TO_DEVICE: 2404 case IOACCEL2_STATUS_SR_INVALID_DEVICE: 2405 case IOACCEL2_STATUS_SR_IOACCEL_DISABLED: 2406 /* 2407 * Did an HBA disk disappear? We will eventually 2408 * get a state change event from the controller but 2409 * in the meantime, we need to tell the OS that the 2410 * HBA disk is no longer there and stop I/O 2411 * from going down. This allows the potential re-insert 2412 * of the disk to get the same device node. 2413 */ 2414 if (dev->physical_device && dev->expose_device) { 2415 cmd->result = DID_NO_CONNECT << 16; 2416 dev->removed = 1; 2417 h->drv_req_rescan = 1; 2418 dev_warn(&h->pdev->dev, 2419 "%s: device is gone!\n", __func__); 2420 } else 2421 /* 2422 * Retry by sending down the RAID path. 2423 * We will get an event from ctlr to 2424 * trigger rescan regardless. 2425 */ 2426 retry = 1; 2427 break; 2428 default: 2429 retry = 1; 2430 } 2431 break; 2432 case IOACCEL2_SERV_RESPONSE_TMF_COMPLETE: 2433 break; 2434 case IOACCEL2_SERV_RESPONSE_TMF_SUCCESS: 2435 break; 2436 case IOACCEL2_SERV_RESPONSE_TMF_REJECTED: 2437 retry = 1; 2438 break; 2439 case IOACCEL2_SERV_RESPONSE_TMF_WRONG_LUN: 2440 break; 2441 default: 2442 retry = 1; 2443 break; 2444 } 2445 2446 if (dev->in_reset) 2447 retry = 0; 2448 2449 return retry; /* retry on raid path? */ 2450 } 2451 2452 static void hpsa_cmd_resolve_events(struct ctlr_info *h, 2453 struct CommandList *c) 2454 { 2455 struct hpsa_scsi_dev_t *dev = c->device; 2456 2457 /* 2458 * Reset c->scsi_cmd here so that the reset handler will know 2459 * this command has completed. Then, check to see if the handler is 2460 * waiting for this command, and, if so, wake it. 2461 */ 2462 c->scsi_cmd = SCSI_CMD_IDLE; 2463 mb(); /* Declare command idle before checking for pending events. */ 2464 if (dev) { 2465 atomic_dec(&dev->commands_outstanding); 2466 if (dev->in_reset && 2467 atomic_read(&dev->commands_outstanding) <= 0) 2468 wake_up_all(&h->event_sync_wait_queue); 2469 } 2470 } 2471 2472 static void hpsa_cmd_resolve_and_free(struct ctlr_info *h, 2473 struct CommandList *c) 2474 { 2475 hpsa_cmd_resolve_events(h, c); 2476 cmd_tagged_free(h, c); 2477 } 2478 2479 static void hpsa_cmd_free_and_done(struct ctlr_info *h, 2480 struct CommandList *c, struct scsi_cmnd *cmd) 2481 { 2482 hpsa_cmd_resolve_and_free(h, c); 2483 if (cmd && cmd->scsi_done) 2484 cmd->scsi_done(cmd); 2485 } 2486 2487 static void hpsa_retry_cmd(struct ctlr_info *h, struct CommandList *c) 2488 { 2489 INIT_WORK(&c->work, hpsa_command_resubmit_worker); 2490 queue_work_on(raw_smp_processor_id(), h->resubmit_wq, &c->work); 2491 } 2492 2493 static void process_ioaccel2_completion(struct ctlr_info *h, 2494 struct CommandList *c, struct scsi_cmnd *cmd, 2495 struct hpsa_scsi_dev_t *dev) 2496 { 2497 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex]; 2498 2499 /* check for good status */ 2500 if (likely(c2->error_data.serv_response == 0 && 2501 c2->error_data.status == 0)) { 2502 cmd->result = 0; 2503 return hpsa_cmd_free_and_done(h, c, cmd); 2504 } 2505 2506 /* 2507 * Any RAID offload error results in retry which will use 2508 * the normal I/O path so the controller can handle whatever is 2509 * wrong. 2510 */ 2511 if (is_logical_device(dev) && 2512 c2->error_data.serv_response == 2513 IOACCEL2_SERV_RESPONSE_FAILURE) { 2514 if (c2->error_data.status == 2515 IOACCEL2_STATUS_SR_IOACCEL_DISABLED) { 2516 hpsa_turn_off_ioaccel_for_device(dev); 2517 } 2518 2519 if (dev->in_reset) { 2520 cmd->result = DID_RESET << 16; 2521 return hpsa_cmd_free_and_done(h, c, cmd); 2522 } 2523 2524 return hpsa_retry_cmd(h, c); 2525 } 2526 2527 if (handle_ioaccel_mode2_error(h, c, cmd, c2, dev)) 2528 return hpsa_retry_cmd(h, c); 2529 2530 return hpsa_cmd_free_and_done(h, c, cmd); 2531 } 2532 2533 /* Returns 0 on success, < 0 otherwise. */ 2534 static int hpsa_evaluate_tmf_status(struct ctlr_info *h, 2535 struct CommandList *cp) 2536 { 2537 u8 tmf_status = cp->err_info->ScsiStatus; 2538 2539 switch (tmf_status) { 2540 case CISS_TMF_COMPLETE: 2541 /* 2542 * CISS_TMF_COMPLETE never happens, instead, 2543 * ei->CommandStatus == 0 for this case. 2544 */ 2545 case CISS_TMF_SUCCESS: 2546 return 0; 2547 case CISS_TMF_INVALID_FRAME: 2548 case CISS_TMF_NOT_SUPPORTED: 2549 case CISS_TMF_FAILED: 2550 case CISS_TMF_WRONG_LUN: 2551 case CISS_TMF_OVERLAPPED_TAG: 2552 break; 2553 default: 2554 dev_warn(&h->pdev->dev, "Unknown TMF status: 0x%02x\n", 2555 tmf_status); 2556 break; 2557 } 2558 return -tmf_status; 2559 } 2560 2561 static void complete_scsi_command(struct CommandList *cp) 2562 { 2563 struct scsi_cmnd *cmd; 2564 struct ctlr_info *h; 2565 struct ErrorInfo *ei; 2566 struct hpsa_scsi_dev_t *dev; 2567 struct io_accel2_cmd *c2; 2568 2569 u8 sense_key; 2570 u8 asc; /* additional sense code */ 2571 u8 ascq; /* additional sense code qualifier */ 2572 unsigned long sense_data_size; 2573 2574 ei = cp->err_info; 2575 cmd = cp->scsi_cmd; 2576 h = cp->h; 2577 2578 if (!cmd->device) { 2579 cmd->result = DID_NO_CONNECT << 16; 2580 return hpsa_cmd_free_and_done(h, cp, cmd); 2581 } 2582 2583 dev = cmd->device->hostdata; 2584 if (!dev) { 2585 cmd->result = DID_NO_CONNECT << 16; 2586 return hpsa_cmd_free_and_done(h, cp, cmd); 2587 } 2588 c2 = &h->ioaccel2_cmd_pool[cp->cmdindex]; 2589 2590 scsi_dma_unmap(cmd); /* undo the DMA mappings */ 2591 if ((cp->cmd_type == CMD_SCSI) && 2592 (le16_to_cpu(cp->Header.SGTotal) > h->max_cmd_sg_entries)) 2593 hpsa_unmap_sg_chain_block(h, cp); 2594 2595 if ((cp->cmd_type == CMD_IOACCEL2) && 2596 (c2->sg[0].chain_indicator == IOACCEL2_CHAIN)) 2597 hpsa_unmap_ioaccel2_sg_chain_block(h, c2); 2598 2599 cmd->result = (DID_OK << 16); /* host byte */ 2600 cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */ 2601 2602 /* SCSI command has already been cleaned up in SML */ 2603 if (dev->was_removed) { 2604 hpsa_cmd_resolve_and_free(h, cp); 2605 return; 2606 } 2607 2608 if (cp->cmd_type == CMD_IOACCEL2 || cp->cmd_type == CMD_IOACCEL1) { 2609 if (dev->physical_device && dev->expose_device && 2610 dev->removed) { 2611 cmd->result = DID_NO_CONNECT << 16; 2612 return hpsa_cmd_free_and_done(h, cp, cmd); 2613 } 2614 if (likely(cp->phys_disk != NULL)) 2615 atomic_dec(&cp->phys_disk->ioaccel_cmds_out); 2616 } 2617 2618 /* 2619 * We check for lockup status here as it may be set for 2620 * CMD_SCSI, CMD_IOACCEL1 and CMD_IOACCEL2 commands by 2621 * fail_all_oustanding_cmds() 2622 */ 2623 if (unlikely(ei->CommandStatus == CMD_CTLR_LOCKUP)) { 2624 /* DID_NO_CONNECT will prevent a retry */ 2625 cmd->result = DID_NO_CONNECT << 16; 2626 return hpsa_cmd_free_and_done(h, cp, cmd); 2627 } 2628 2629 if (cp->cmd_type == CMD_IOACCEL2) 2630 return process_ioaccel2_completion(h, cp, cmd, dev); 2631 2632 scsi_set_resid(cmd, ei->ResidualCnt); 2633 if (ei->CommandStatus == 0) 2634 return hpsa_cmd_free_and_done(h, cp, cmd); 2635 2636 /* For I/O accelerator commands, copy over some fields to the normal 2637 * CISS header used below for error handling. 2638 */ 2639 if (cp->cmd_type == CMD_IOACCEL1) { 2640 struct io_accel1_cmd *c = &h->ioaccel_cmd_pool[cp->cmdindex]; 2641 cp->Header.SGList = scsi_sg_count(cmd); 2642 cp->Header.SGTotal = cpu_to_le16(cp->Header.SGList); 2643 cp->Request.CDBLen = le16_to_cpu(c->io_flags) & 2644 IOACCEL1_IOFLAGS_CDBLEN_MASK; 2645 cp->Header.tag = c->tag; 2646 memcpy(cp->Header.LUN.LunAddrBytes, c->CISS_LUN, 8); 2647 memcpy(cp->Request.CDB, c->CDB, cp->Request.CDBLen); 2648 2649 /* Any RAID offload error results in retry which will use 2650 * the normal I/O path so the controller can handle whatever's 2651 * wrong. 2652 */ 2653 if (is_logical_device(dev)) { 2654 if (ei->CommandStatus == CMD_IOACCEL_DISABLED) 2655 dev->offload_enabled = 0; 2656 return hpsa_retry_cmd(h, cp); 2657 } 2658 } 2659 2660 /* an error has occurred */ 2661 switch (ei->CommandStatus) { 2662 2663 case CMD_TARGET_STATUS: 2664 cmd->result |= ei->ScsiStatus; 2665 /* copy the sense data */ 2666 if (SCSI_SENSE_BUFFERSIZE < sizeof(ei->SenseInfo)) 2667 sense_data_size = SCSI_SENSE_BUFFERSIZE; 2668 else 2669 sense_data_size = sizeof(ei->SenseInfo); 2670 if (ei->SenseLen < sense_data_size) 2671 sense_data_size = ei->SenseLen; 2672 memcpy(cmd->sense_buffer, ei->SenseInfo, sense_data_size); 2673 if (ei->ScsiStatus) 2674 decode_sense_data(ei->SenseInfo, sense_data_size, 2675 &sense_key, &asc, &ascq); 2676 if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION) { 2677 switch (sense_key) { 2678 case ABORTED_COMMAND: 2679 cmd->result |= DID_SOFT_ERROR << 16; 2680 break; 2681 case UNIT_ATTENTION: 2682 if (asc == 0x3F && ascq == 0x0E) 2683 h->drv_req_rescan = 1; 2684 break; 2685 case ILLEGAL_REQUEST: 2686 if (asc == 0x25 && ascq == 0x00) { 2687 dev->removed = 1; 2688 cmd->result = DID_NO_CONNECT << 16; 2689 } 2690 break; 2691 } 2692 break; 2693 } 2694 /* Problem was not a check condition 2695 * Pass it up to the upper layers... 2696 */ 2697 if (ei->ScsiStatus) { 2698 dev_warn(&h->pdev->dev, "cp %p has status 0x%x " 2699 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, " 2700 "Returning result: 0x%x\n", 2701 cp, ei->ScsiStatus, 2702 sense_key, asc, ascq, 2703 cmd->result); 2704 } else { /* scsi status is zero??? How??? */ 2705 dev_warn(&h->pdev->dev, "cp %p SCSI status was 0. " 2706 "Returning no connection.\n", cp), 2707 2708 /* Ordinarily, this case should never happen, 2709 * but there is a bug in some released firmware 2710 * revisions that allows it to happen if, for 2711 * example, a 4100 backplane loses power and 2712 * the tape drive is in it. We assume that 2713 * it's a fatal error of some kind because we 2714 * can't show that it wasn't. We will make it 2715 * look like selection timeout since that is 2716 * the most common reason for this to occur, 2717 * and it's severe enough. 2718 */ 2719 2720 cmd->result = DID_NO_CONNECT << 16; 2721 } 2722 break; 2723 2724 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */ 2725 break; 2726 case CMD_DATA_OVERRUN: 2727 dev_warn(&h->pdev->dev, 2728 "CDB %16phN data overrun\n", cp->Request.CDB); 2729 break; 2730 case CMD_INVALID: { 2731 /* print_bytes(cp, sizeof(*cp), 1, 0); 2732 print_cmd(cp); */ 2733 /* We get CMD_INVALID if you address a non-existent device 2734 * instead of a selection timeout (no response). You will 2735 * see this if you yank out a drive, then try to access it. 2736 * This is kind of a shame because it means that any other 2737 * CMD_INVALID (e.g. driver bug) will get interpreted as a 2738 * missing target. */ 2739 cmd->result = DID_NO_CONNECT << 16; 2740 } 2741 break; 2742 case CMD_PROTOCOL_ERR: 2743 cmd->result = DID_ERROR << 16; 2744 dev_warn(&h->pdev->dev, "CDB %16phN : protocol error\n", 2745 cp->Request.CDB); 2746 break; 2747 case CMD_HARDWARE_ERR: 2748 cmd->result = DID_ERROR << 16; 2749 dev_warn(&h->pdev->dev, "CDB %16phN : hardware error\n", 2750 cp->Request.CDB); 2751 break; 2752 case CMD_CONNECTION_LOST: 2753 cmd->result = DID_ERROR << 16; 2754 dev_warn(&h->pdev->dev, "CDB %16phN : connection lost\n", 2755 cp->Request.CDB); 2756 break; 2757 case CMD_ABORTED: 2758 cmd->result = DID_ABORT << 16; 2759 break; 2760 case CMD_ABORT_FAILED: 2761 cmd->result = DID_ERROR << 16; 2762 dev_warn(&h->pdev->dev, "CDB %16phN : abort failed\n", 2763 cp->Request.CDB); 2764 break; 2765 case CMD_UNSOLICITED_ABORT: 2766 cmd->result = DID_SOFT_ERROR << 16; /* retry the command */ 2767 dev_warn(&h->pdev->dev, "CDB %16phN : unsolicited abort\n", 2768 cp->Request.CDB); 2769 break; 2770 case CMD_TIMEOUT: 2771 cmd->result = DID_TIME_OUT << 16; 2772 dev_warn(&h->pdev->dev, "CDB %16phN timed out\n", 2773 cp->Request.CDB); 2774 break; 2775 case CMD_UNABORTABLE: 2776 cmd->result = DID_ERROR << 16; 2777 dev_warn(&h->pdev->dev, "Command unabortable\n"); 2778 break; 2779 case CMD_TMF_STATUS: 2780 if (hpsa_evaluate_tmf_status(h, cp)) /* TMF failed? */ 2781 cmd->result = DID_ERROR << 16; 2782 break; 2783 case CMD_IOACCEL_DISABLED: 2784 /* This only handles the direct pass-through case since RAID 2785 * offload is handled above. Just attempt a retry. 2786 */ 2787 cmd->result = DID_SOFT_ERROR << 16; 2788 dev_warn(&h->pdev->dev, 2789 "cp %p had HP SSD Smart Path error\n", cp); 2790 break; 2791 default: 2792 cmd->result = DID_ERROR << 16; 2793 dev_warn(&h->pdev->dev, "cp %p returned unknown status %x\n", 2794 cp, ei->CommandStatus); 2795 } 2796 2797 return hpsa_cmd_free_and_done(h, cp, cmd); 2798 } 2799 2800 static void hpsa_pci_unmap(struct pci_dev *pdev, struct CommandList *c, 2801 int sg_used, enum dma_data_direction data_direction) 2802 { 2803 int i; 2804 2805 for (i = 0; i < sg_used; i++) 2806 dma_unmap_single(&pdev->dev, le64_to_cpu(c->SG[i].Addr), 2807 le32_to_cpu(c->SG[i].Len), 2808 data_direction); 2809 } 2810 2811 static int hpsa_map_one(struct pci_dev *pdev, 2812 struct CommandList *cp, 2813 unsigned char *buf, 2814 size_t buflen, 2815 enum dma_data_direction data_direction) 2816 { 2817 u64 addr64; 2818 2819 if (buflen == 0 || data_direction == DMA_NONE) { 2820 cp->Header.SGList = 0; 2821 cp->Header.SGTotal = cpu_to_le16(0); 2822 return 0; 2823 } 2824 2825 addr64 = dma_map_single(&pdev->dev, buf, buflen, data_direction); 2826 if (dma_mapping_error(&pdev->dev, addr64)) { 2827 /* Prevent subsequent unmap of something never mapped */ 2828 cp->Header.SGList = 0; 2829 cp->Header.SGTotal = cpu_to_le16(0); 2830 return -1; 2831 } 2832 cp->SG[0].Addr = cpu_to_le64(addr64); 2833 cp->SG[0].Len = cpu_to_le32(buflen); 2834 cp->SG[0].Ext = cpu_to_le32(HPSA_SG_LAST); /* we are not chaining */ 2835 cp->Header.SGList = 1; /* no. SGs contig in this cmd */ 2836 cp->Header.SGTotal = cpu_to_le16(1); /* total sgs in cmd list */ 2837 return 0; 2838 } 2839 2840 #define NO_TIMEOUT ((unsigned long) -1) 2841 #define DEFAULT_TIMEOUT 30000 /* milliseconds */ 2842 static int hpsa_scsi_do_simple_cmd_core(struct ctlr_info *h, 2843 struct CommandList *c, int reply_queue, unsigned long timeout_msecs) 2844 { 2845 DECLARE_COMPLETION_ONSTACK(wait); 2846 2847 c->waiting = &wait; 2848 __enqueue_cmd_and_start_io(h, c, reply_queue); 2849 if (timeout_msecs == NO_TIMEOUT) { 2850 /* TODO: get rid of this no-timeout thing */ 2851 wait_for_completion_io(&wait); 2852 return IO_OK; 2853 } 2854 if (!wait_for_completion_io_timeout(&wait, 2855 msecs_to_jiffies(timeout_msecs))) { 2856 dev_warn(&h->pdev->dev, "Command timed out.\n"); 2857 return -ETIMEDOUT; 2858 } 2859 return IO_OK; 2860 } 2861 2862 static int hpsa_scsi_do_simple_cmd(struct ctlr_info *h, struct CommandList *c, 2863 int reply_queue, unsigned long timeout_msecs) 2864 { 2865 if (unlikely(lockup_detected(h))) { 2866 c->err_info->CommandStatus = CMD_CTLR_LOCKUP; 2867 return IO_OK; 2868 } 2869 return hpsa_scsi_do_simple_cmd_core(h, c, reply_queue, timeout_msecs); 2870 } 2871 2872 static u32 lockup_detected(struct ctlr_info *h) 2873 { 2874 int cpu; 2875 u32 rc, *lockup_detected; 2876 2877 cpu = get_cpu(); 2878 lockup_detected = per_cpu_ptr(h->lockup_detected, cpu); 2879 rc = *lockup_detected; 2880 put_cpu(); 2881 return rc; 2882 } 2883 2884 #define MAX_DRIVER_CMD_RETRIES 25 2885 static int hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info *h, 2886 struct CommandList *c, enum dma_data_direction data_direction, 2887 unsigned long timeout_msecs) 2888 { 2889 int backoff_time = 10, retry_count = 0; 2890 int rc; 2891 2892 do { 2893 memset(c->err_info, 0, sizeof(*c->err_info)); 2894 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, 2895 timeout_msecs); 2896 if (rc) 2897 break; 2898 retry_count++; 2899 if (retry_count > 3) { 2900 msleep(backoff_time); 2901 if (backoff_time < 1000) 2902 backoff_time *= 2; 2903 } 2904 } while ((check_for_unit_attention(h, c) || 2905 check_for_busy(h, c)) && 2906 retry_count <= MAX_DRIVER_CMD_RETRIES); 2907 hpsa_pci_unmap(h->pdev, c, 1, data_direction); 2908 if (retry_count > MAX_DRIVER_CMD_RETRIES) 2909 rc = -EIO; 2910 return rc; 2911 } 2912 2913 static void hpsa_print_cmd(struct ctlr_info *h, char *txt, 2914 struct CommandList *c) 2915 { 2916 const u8 *cdb = c->Request.CDB; 2917 const u8 *lun = c->Header.LUN.LunAddrBytes; 2918 2919 dev_warn(&h->pdev->dev, "%s: LUN:%8phN CDB:%16phN\n", 2920 txt, lun, cdb); 2921 } 2922 2923 static void hpsa_scsi_interpret_error(struct ctlr_info *h, 2924 struct CommandList *cp) 2925 { 2926 const struct ErrorInfo *ei = cp->err_info; 2927 struct device *d = &cp->h->pdev->dev; 2928 u8 sense_key, asc, ascq; 2929 int sense_len; 2930 2931 switch (ei->CommandStatus) { 2932 case CMD_TARGET_STATUS: 2933 if (ei->SenseLen > sizeof(ei->SenseInfo)) 2934 sense_len = sizeof(ei->SenseInfo); 2935 else 2936 sense_len = ei->SenseLen; 2937 decode_sense_data(ei->SenseInfo, sense_len, 2938 &sense_key, &asc, &ascq); 2939 hpsa_print_cmd(h, "SCSI status", cp); 2940 if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION) 2941 dev_warn(d, "SCSI Status = 02, Sense key = 0x%02x, ASC = 0x%02x, ASCQ = 0x%02x\n", 2942 sense_key, asc, ascq); 2943 else 2944 dev_warn(d, "SCSI Status = 0x%02x\n", ei->ScsiStatus); 2945 if (ei->ScsiStatus == 0) 2946 dev_warn(d, "SCSI status is abnormally zero. " 2947 "(probably indicates selection timeout " 2948 "reported incorrectly due to a known " 2949 "firmware bug, circa July, 2001.)\n"); 2950 break; 2951 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */ 2952 break; 2953 case CMD_DATA_OVERRUN: 2954 hpsa_print_cmd(h, "overrun condition", cp); 2955 break; 2956 case CMD_INVALID: { 2957 /* controller unfortunately reports SCSI passthru's 2958 * to non-existent targets as invalid commands. 2959 */ 2960 hpsa_print_cmd(h, "invalid command", cp); 2961 dev_warn(d, "probably means device no longer present\n"); 2962 } 2963 break; 2964 case CMD_PROTOCOL_ERR: 2965 hpsa_print_cmd(h, "protocol error", cp); 2966 break; 2967 case CMD_HARDWARE_ERR: 2968 hpsa_print_cmd(h, "hardware error", cp); 2969 break; 2970 case CMD_CONNECTION_LOST: 2971 hpsa_print_cmd(h, "connection lost", cp); 2972 break; 2973 case CMD_ABORTED: 2974 hpsa_print_cmd(h, "aborted", cp); 2975 break; 2976 case CMD_ABORT_FAILED: 2977 hpsa_print_cmd(h, "abort failed", cp); 2978 break; 2979 case CMD_UNSOLICITED_ABORT: 2980 hpsa_print_cmd(h, "unsolicited abort", cp); 2981 break; 2982 case CMD_TIMEOUT: 2983 hpsa_print_cmd(h, "timed out", cp); 2984 break; 2985 case CMD_UNABORTABLE: 2986 hpsa_print_cmd(h, "unabortable", cp); 2987 break; 2988 case CMD_CTLR_LOCKUP: 2989 hpsa_print_cmd(h, "controller lockup detected", cp); 2990 break; 2991 default: 2992 hpsa_print_cmd(h, "unknown status", cp); 2993 dev_warn(d, "Unknown command status %x\n", 2994 ei->CommandStatus); 2995 } 2996 } 2997 2998 static int hpsa_do_receive_diagnostic(struct ctlr_info *h, u8 *scsi3addr, 2999 u8 page, u8 *buf, size_t bufsize) 3000 { 3001 int rc = IO_OK; 3002 struct CommandList *c; 3003 struct ErrorInfo *ei; 3004 3005 c = cmd_alloc(h); 3006 if (fill_cmd(c, RECEIVE_DIAGNOSTIC, h, buf, bufsize, 3007 page, scsi3addr, TYPE_CMD)) { 3008 rc = -1; 3009 goto out; 3010 } 3011 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE, 3012 NO_TIMEOUT); 3013 if (rc) 3014 goto out; 3015 ei = c->err_info; 3016 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { 3017 hpsa_scsi_interpret_error(h, c); 3018 rc = -1; 3019 } 3020 out: 3021 cmd_free(h, c); 3022 return rc; 3023 } 3024 3025 static u64 hpsa_get_enclosure_logical_identifier(struct ctlr_info *h, 3026 u8 *scsi3addr) 3027 { 3028 u8 *buf; 3029 u64 sa = 0; 3030 int rc = 0; 3031 3032 buf = kzalloc(1024, GFP_KERNEL); 3033 if (!buf) 3034 return 0; 3035 3036 rc = hpsa_do_receive_diagnostic(h, scsi3addr, RECEIVE_DIAGNOSTIC, 3037 buf, 1024); 3038 3039 if (rc) 3040 goto out; 3041 3042 sa = get_unaligned_be64(buf+12); 3043 3044 out: 3045 kfree(buf); 3046 return sa; 3047 } 3048 3049 static int hpsa_scsi_do_inquiry(struct ctlr_info *h, unsigned char *scsi3addr, 3050 u16 page, unsigned char *buf, 3051 unsigned char bufsize) 3052 { 3053 int rc = IO_OK; 3054 struct CommandList *c; 3055 struct ErrorInfo *ei; 3056 3057 c = cmd_alloc(h); 3058 3059 if (fill_cmd(c, HPSA_INQUIRY, h, buf, bufsize, 3060 page, scsi3addr, TYPE_CMD)) { 3061 rc = -1; 3062 goto out; 3063 } 3064 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE, 3065 NO_TIMEOUT); 3066 if (rc) 3067 goto out; 3068 ei = c->err_info; 3069 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { 3070 hpsa_scsi_interpret_error(h, c); 3071 rc = -1; 3072 } 3073 out: 3074 cmd_free(h, c); 3075 return rc; 3076 } 3077 3078 static int hpsa_send_reset(struct ctlr_info *h, struct hpsa_scsi_dev_t *dev, 3079 u8 reset_type, int reply_queue) 3080 { 3081 int rc = IO_OK; 3082 struct CommandList *c; 3083 struct ErrorInfo *ei; 3084 3085 c = cmd_alloc(h); 3086 c->device = dev; 3087 3088 /* fill_cmd can't fail here, no data buffer to map. */ 3089 (void) fill_cmd(c, reset_type, h, NULL, 0, 0, dev->scsi3addr, TYPE_MSG); 3090 rc = hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT); 3091 if (rc) { 3092 dev_warn(&h->pdev->dev, "Failed to send reset command\n"); 3093 goto out; 3094 } 3095 /* no unmap needed here because no data xfer. */ 3096 3097 ei = c->err_info; 3098 if (ei->CommandStatus != 0) { 3099 hpsa_scsi_interpret_error(h, c); 3100 rc = -1; 3101 } 3102 out: 3103 cmd_free(h, c); 3104 return rc; 3105 } 3106 3107 static bool hpsa_cmd_dev_match(struct ctlr_info *h, struct CommandList *c, 3108 struct hpsa_scsi_dev_t *dev, 3109 unsigned char *scsi3addr) 3110 { 3111 int i; 3112 bool match = false; 3113 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex]; 3114 struct hpsa_tmf_struct *ac = (struct hpsa_tmf_struct *) c2; 3115 3116 if (hpsa_is_cmd_idle(c)) 3117 return false; 3118 3119 switch (c->cmd_type) { 3120 case CMD_SCSI: 3121 case CMD_IOCTL_PEND: 3122 match = !memcmp(scsi3addr, &c->Header.LUN.LunAddrBytes, 3123 sizeof(c->Header.LUN.LunAddrBytes)); 3124 break; 3125 3126 case CMD_IOACCEL1: 3127 case CMD_IOACCEL2: 3128 if (c->phys_disk == dev) { 3129 /* HBA mode match */ 3130 match = true; 3131 } else { 3132 /* Possible RAID mode -- check each phys dev. */ 3133 /* FIXME: Do we need to take out a lock here? If 3134 * so, we could just call hpsa_get_pdisk_of_ioaccel2() 3135 * instead. */ 3136 for (i = 0; i < dev->nphysical_disks && !match; i++) { 3137 /* FIXME: an alternate test might be 3138 * 3139 * match = dev->phys_disk[i]->ioaccel_handle 3140 * == c2->scsi_nexus; */ 3141 match = dev->phys_disk[i] == c->phys_disk; 3142 } 3143 } 3144 break; 3145 3146 case IOACCEL2_TMF: 3147 for (i = 0; i < dev->nphysical_disks && !match; i++) { 3148 match = dev->phys_disk[i]->ioaccel_handle == 3149 le32_to_cpu(ac->it_nexus); 3150 } 3151 break; 3152 3153 case 0: /* The command is in the middle of being initialized. */ 3154 match = false; 3155 break; 3156 3157 default: 3158 dev_err(&h->pdev->dev, "unexpected cmd_type: %d\n", 3159 c->cmd_type); 3160 BUG(); 3161 } 3162 3163 return match; 3164 } 3165 3166 static int hpsa_do_reset(struct ctlr_info *h, struct hpsa_scsi_dev_t *dev, 3167 u8 reset_type, int reply_queue) 3168 { 3169 int rc = 0; 3170 3171 /* We can really only handle one reset at a time */ 3172 if (mutex_lock_interruptible(&h->reset_mutex) == -EINTR) { 3173 dev_warn(&h->pdev->dev, "concurrent reset wait interrupted.\n"); 3174 return -EINTR; 3175 } 3176 3177 rc = hpsa_send_reset(h, dev, reset_type, reply_queue); 3178 if (!rc) { 3179 /* incremented by sending the reset request */ 3180 atomic_dec(&dev->commands_outstanding); 3181 wait_event(h->event_sync_wait_queue, 3182 atomic_read(&dev->commands_outstanding) <= 0 || 3183 lockup_detected(h)); 3184 } 3185 3186 if (unlikely(lockup_detected(h))) { 3187 dev_warn(&h->pdev->dev, 3188 "Controller lockup detected during reset wait\n"); 3189 rc = -ENODEV; 3190 } 3191 3192 if (!rc) 3193 rc = wait_for_device_to_become_ready(h, dev->scsi3addr, 0); 3194 3195 mutex_unlock(&h->reset_mutex); 3196 return rc; 3197 } 3198 3199 static void hpsa_get_raid_level(struct ctlr_info *h, 3200 unsigned char *scsi3addr, unsigned char *raid_level) 3201 { 3202 int rc; 3203 unsigned char *buf; 3204 3205 *raid_level = RAID_UNKNOWN; 3206 buf = kzalloc(64, GFP_KERNEL); 3207 if (!buf) 3208 return; 3209 3210 if (!hpsa_vpd_page_supported(h, scsi3addr, 3211 HPSA_VPD_LV_DEVICE_GEOMETRY)) 3212 goto exit; 3213 3214 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | 3215 HPSA_VPD_LV_DEVICE_GEOMETRY, buf, 64); 3216 3217 if (rc == 0) 3218 *raid_level = buf[8]; 3219 if (*raid_level > RAID_UNKNOWN) 3220 *raid_level = RAID_UNKNOWN; 3221 exit: 3222 kfree(buf); 3223 return; 3224 } 3225 3226 #define HPSA_MAP_DEBUG 3227 #ifdef HPSA_MAP_DEBUG 3228 static void hpsa_debug_map_buff(struct ctlr_info *h, int rc, 3229 struct raid_map_data *map_buff) 3230 { 3231 struct raid_map_disk_data *dd = &map_buff->data[0]; 3232 int map, row, col; 3233 u16 map_cnt, row_cnt, disks_per_row; 3234 3235 if (rc != 0) 3236 return; 3237 3238 /* Show details only if debugging has been activated. */ 3239 if (h->raid_offload_debug < 2) 3240 return; 3241 3242 dev_info(&h->pdev->dev, "structure_size = %u\n", 3243 le32_to_cpu(map_buff->structure_size)); 3244 dev_info(&h->pdev->dev, "volume_blk_size = %u\n", 3245 le32_to_cpu(map_buff->volume_blk_size)); 3246 dev_info(&h->pdev->dev, "volume_blk_cnt = 0x%llx\n", 3247 le64_to_cpu(map_buff->volume_blk_cnt)); 3248 dev_info(&h->pdev->dev, "physicalBlockShift = %u\n", 3249 map_buff->phys_blk_shift); 3250 dev_info(&h->pdev->dev, "parity_rotation_shift = %u\n", 3251 map_buff->parity_rotation_shift); 3252 dev_info(&h->pdev->dev, "strip_size = %u\n", 3253 le16_to_cpu(map_buff->strip_size)); 3254 dev_info(&h->pdev->dev, "disk_starting_blk = 0x%llx\n", 3255 le64_to_cpu(map_buff->disk_starting_blk)); 3256 dev_info(&h->pdev->dev, "disk_blk_cnt = 0x%llx\n", 3257 le64_to_cpu(map_buff->disk_blk_cnt)); 3258 dev_info(&h->pdev->dev, "data_disks_per_row = %u\n", 3259 le16_to_cpu(map_buff->data_disks_per_row)); 3260 dev_info(&h->pdev->dev, "metadata_disks_per_row = %u\n", 3261 le16_to_cpu(map_buff->metadata_disks_per_row)); 3262 dev_info(&h->pdev->dev, "row_cnt = %u\n", 3263 le16_to_cpu(map_buff->row_cnt)); 3264 dev_info(&h->pdev->dev, "layout_map_count = %u\n", 3265 le16_to_cpu(map_buff->layout_map_count)); 3266 dev_info(&h->pdev->dev, "flags = 0x%x\n", 3267 le16_to_cpu(map_buff->flags)); 3268 dev_info(&h->pdev->dev, "encryption = %s\n", 3269 le16_to_cpu(map_buff->flags) & 3270 RAID_MAP_FLAG_ENCRYPT_ON ? "ON" : "OFF"); 3271 dev_info(&h->pdev->dev, "dekindex = %u\n", 3272 le16_to_cpu(map_buff->dekindex)); 3273 map_cnt = le16_to_cpu(map_buff->layout_map_count); 3274 for (map = 0; map < map_cnt; map++) { 3275 dev_info(&h->pdev->dev, "Map%u:\n", map); 3276 row_cnt = le16_to_cpu(map_buff->row_cnt); 3277 for (row = 0; row < row_cnt; row++) { 3278 dev_info(&h->pdev->dev, " Row%u:\n", row); 3279 disks_per_row = 3280 le16_to_cpu(map_buff->data_disks_per_row); 3281 for (col = 0; col < disks_per_row; col++, dd++) 3282 dev_info(&h->pdev->dev, 3283 " D%02u: h=0x%04x xor=%u,%u\n", 3284 col, dd->ioaccel_handle, 3285 dd->xor_mult[0], dd->xor_mult[1]); 3286 disks_per_row = 3287 le16_to_cpu(map_buff->metadata_disks_per_row); 3288 for (col = 0; col < disks_per_row; col++, dd++) 3289 dev_info(&h->pdev->dev, 3290 " M%02u: h=0x%04x xor=%u,%u\n", 3291 col, dd->ioaccel_handle, 3292 dd->xor_mult[0], dd->xor_mult[1]); 3293 } 3294 } 3295 } 3296 #else 3297 static void hpsa_debug_map_buff(__attribute__((unused)) struct ctlr_info *h, 3298 __attribute__((unused)) int rc, 3299 __attribute__((unused)) struct raid_map_data *map_buff) 3300 { 3301 } 3302 #endif 3303 3304 static int hpsa_get_raid_map(struct ctlr_info *h, 3305 unsigned char *scsi3addr, struct hpsa_scsi_dev_t *this_device) 3306 { 3307 int rc = 0; 3308 struct CommandList *c; 3309 struct ErrorInfo *ei; 3310 3311 c = cmd_alloc(h); 3312 3313 if (fill_cmd(c, HPSA_GET_RAID_MAP, h, &this_device->raid_map, 3314 sizeof(this_device->raid_map), 0, 3315 scsi3addr, TYPE_CMD)) { 3316 dev_warn(&h->pdev->dev, "hpsa_get_raid_map fill_cmd failed\n"); 3317 cmd_free(h, c); 3318 return -1; 3319 } 3320 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE, 3321 NO_TIMEOUT); 3322 if (rc) 3323 goto out; 3324 ei = c->err_info; 3325 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { 3326 hpsa_scsi_interpret_error(h, c); 3327 rc = -1; 3328 goto out; 3329 } 3330 cmd_free(h, c); 3331 3332 /* @todo in the future, dynamically allocate RAID map memory */ 3333 if (le32_to_cpu(this_device->raid_map.structure_size) > 3334 sizeof(this_device->raid_map)) { 3335 dev_warn(&h->pdev->dev, "RAID map size is too large!\n"); 3336 rc = -1; 3337 } 3338 hpsa_debug_map_buff(h, rc, &this_device->raid_map); 3339 return rc; 3340 out: 3341 cmd_free(h, c); 3342 return rc; 3343 } 3344 3345 static int hpsa_bmic_sense_subsystem_information(struct ctlr_info *h, 3346 unsigned char scsi3addr[], u16 bmic_device_index, 3347 struct bmic_sense_subsystem_info *buf, size_t bufsize) 3348 { 3349 int rc = IO_OK; 3350 struct CommandList *c; 3351 struct ErrorInfo *ei; 3352 3353 c = cmd_alloc(h); 3354 3355 rc = fill_cmd(c, BMIC_SENSE_SUBSYSTEM_INFORMATION, h, buf, bufsize, 3356 0, RAID_CTLR_LUNID, TYPE_CMD); 3357 if (rc) 3358 goto out; 3359 3360 c->Request.CDB[2] = bmic_device_index & 0xff; 3361 c->Request.CDB[9] = (bmic_device_index >> 8) & 0xff; 3362 3363 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE, 3364 NO_TIMEOUT); 3365 if (rc) 3366 goto out; 3367 ei = c->err_info; 3368 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { 3369 hpsa_scsi_interpret_error(h, c); 3370 rc = -1; 3371 } 3372 out: 3373 cmd_free(h, c); 3374 return rc; 3375 } 3376 3377 static int hpsa_bmic_id_controller(struct ctlr_info *h, 3378 struct bmic_identify_controller *buf, size_t bufsize) 3379 { 3380 int rc = IO_OK; 3381 struct CommandList *c; 3382 struct ErrorInfo *ei; 3383 3384 c = cmd_alloc(h); 3385 3386 rc = fill_cmd(c, BMIC_IDENTIFY_CONTROLLER, h, buf, bufsize, 3387 0, RAID_CTLR_LUNID, TYPE_CMD); 3388 if (rc) 3389 goto out; 3390 3391 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE, 3392 NO_TIMEOUT); 3393 if (rc) 3394 goto out; 3395 ei = c->err_info; 3396 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { 3397 hpsa_scsi_interpret_error(h, c); 3398 rc = -1; 3399 } 3400 out: 3401 cmd_free(h, c); 3402 return rc; 3403 } 3404 3405 static int hpsa_bmic_id_physical_device(struct ctlr_info *h, 3406 unsigned char scsi3addr[], u16 bmic_device_index, 3407 struct bmic_identify_physical_device *buf, size_t bufsize) 3408 { 3409 int rc = IO_OK; 3410 struct CommandList *c; 3411 struct ErrorInfo *ei; 3412 3413 c = cmd_alloc(h); 3414 rc = fill_cmd(c, BMIC_IDENTIFY_PHYSICAL_DEVICE, h, buf, bufsize, 3415 0, RAID_CTLR_LUNID, TYPE_CMD); 3416 if (rc) 3417 goto out; 3418 3419 c->Request.CDB[2] = bmic_device_index & 0xff; 3420 c->Request.CDB[9] = (bmic_device_index >> 8) & 0xff; 3421 3422 hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE, 3423 NO_TIMEOUT); 3424 ei = c->err_info; 3425 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { 3426 hpsa_scsi_interpret_error(h, c); 3427 rc = -1; 3428 } 3429 out: 3430 cmd_free(h, c); 3431 3432 return rc; 3433 } 3434 3435 /* 3436 * get enclosure information 3437 * struct ReportExtendedLUNdata *rlep - Used for BMIC drive number 3438 * struct hpsa_scsi_dev_t *encl_dev - device entry for enclosure 3439 * Uses id_physical_device to determine the box_index. 3440 */ 3441 static void hpsa_get_enclosure_info(struct ctlr_info *h, 3442 unsigned char *scsi3addr, 3443 struct ReportExtendedLUNdata *rlep, int rle_index, 3444 struct hpsa_scsi_dev_t *encl_dev) 3445 { 3446 int rc = -1; 3447 struct CommandList *c = NULL; 3448 struct ErrorInfo *ei = NULL; 3449 struct bmic_sense_storage_box_params *bssbp = NULL; 3450 struct bmic_identify_physical_device *id_phys = NULL; 3451 struct ext_report_lun_entry *rle; 3452 u16 bmic_device_index = 0; 3453 3454 if (rle_index < 0 || rle_index >= HPSA_MAX_PHYS_LUN) 3455 return; 3456 3457 rle = &rlep->LUN[rle_index]; 3458 3459 encl_dev->eli = 3460 hpsa_get_enclosure_logical_identifier(h, scsi3addr); 3461 3462 bmic_device_index = GET_BMIC_DRIVE_NUMBER(&rle->lunid[0]); 3463 3464 if (encl_dev->target == -1 || encl_dev->lun == -1) { 3465 rc = IO_OK; 3466 goto out; 3467 } 3468 3469 if (bmic_device_index == 0xFF00 || MASKED_DEVICE(&rle->lunid[0])) { 3470 rc = IO_OK; 3471 goto out; 3472 } 3473 3474 bssbp = kzalloc(sizeof(*bssbp), GFP_KERNEL); 3475 if (!bssbp) 3476 goto out; 3477 3478 id_phys = kzalloc(sizeof(*id_phys), GFP_KERNEL); 3479 if (!id_phys) 3480 goto out; 3481 3482 rc = hpsa_bmic_id_physical_device(h, scsi3addr, bmic_device_index, 3483 id_phys, sizeof(*id_phys)); 3484 if (rc) { 3485 dev_warn(&h->pdev->dev, "%s: id_phys failed %d bdi[0x%x]\n", 3486 __func__, encl_dev->external, bmic_device_index); 3487 goto out; 3488 } 3489 3490 c = cmd_alloc(h); 3491 3492 rc = fill_cmd(c, BMIC_SENSE_STORAGE_BOX_PARAMS, h, bssbp, 3493 sizeof(*bssbp), 0, RAID_CTLR_LUNID, TYPE_CMD); 3494 3495 if (rc) 3496 goto out; 3497 3498 if (id_phys->phys_connector[1] == 'E') 3499 c->Request.CDB[5] = id_phys->box_index; 3500 else 3501 c->Request.CDB[5] = 0; 3502 3503 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE, 3504 NO_TIMEOUT); 3505 if (rc) 3506 goto out; 3507 3508 ei = c->err_info; 3509 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { 3510 rc = -1; 3511 goto out; 3512 } 3513 3514 encl_dev->box[id_phys->active_path_number] = bssbp->phys_box_on_port; 3515 memcpy(&encl_dev->phys_connector[id_phys->active_path_number], 3516 bssbp->phys_connector, sizeof(bssbp->phys_connector)); 3517 3518 rc = IO_OK; 3519 out: 3520 kfree(bssbp); 3521 kfree(id_phys); 3522 3523 if (c) 3524 cmd_free(h, c); 3525 3526 if (rc != IO_OK) 3527 hpsa_show_dev_msg(KERN_INFO, h, encl_dev, 3528 "Error, could not get enclosure information"); 3529 } 3530 3531 static u64 hpsa_get_sas_address_from_report_physical(struct ctlr_info *h, 3532 unsigned char *scsi3addr) 3533 { 3534 struct ReportExtendedLUNdata *physdev; 3535 u32 nphysicals; 3536 u64 sa = 0; 3537 int i; 3538 3539 physdev = kzalloc(sizeof(*physdev), GFP_KERNEL); 3540 if (!physdev) 3541 return 0; 3542 3543 if (hpsa_scsi_do_report_phys_luns(h, physdev, sizeof(*physdev))) { 3544 dev_err(&h->pdev->dev, "report physical LUNs failed.\n"); 3545 kfree(physdev); 3546 return 0; 3547 } 3548 nphysicals = get_unaligned_be32(physdev->LUNListLength) / 24; 3549 3550 for (i = 0; i < nphysicals; i++) 3551 if (!memcmp(&physdev->LUN[i].lunid[0], scsi3addr, 8)) { 3552 sa = get_unaligned_be64(&physdev->LUN[i].wwid[0]); 3553 break; 3554 } 3555 3556 kfree(physdev); 3557 3558 return sa; 3559 } 3560 3561 static void hpsa_get_sas_address(struct ctlr_info *h, unsigned char *scsi3addr, 3562 struct hpsa_scsi_dev_t *dev) 3563 { 3564 int rc; 3565 u64 sa = 0; 3566 3567 if (is_hba_lunid(scsi3addr)) { 3568 struct bmic_sense_subsystem_info *ssi; 3569 3570 ssi = kzalloc(sizeof(*ssi), GFP_KERNEL); 3571 if (!ssi) 3572 return; 3573 3574 rc = hpsa_bmic_sense_subsystem_information(h, 3575 scsi3addr, 0, ssi, sizeof(*ssi)); 3576 if (rc == 0) { 3577 sa = get_unaligned_be64(ssi->primary_world_wide_id); 3578 h->sas_address = sa; 3579 } 3580 3581 kfree(ssi); 3582 } else 3583 sa = hpsa_get_sas_address_from_report_physical(h, scsi3addr); 3584 3585 dev->sas_address = sa; 3586 } 3587 3588 static void hpsa_ext_ctrl_present(struct ctlr_info *h, 3589 struct ReportExtendedLUNdata *physdev) 3590 { 3591 u32 nphysicals; 3592 int i; 3593 3594 if (h->discovery_polling) 3595 return; 3596 3597 nphysicals = (get_unaligned_be32(physdev->LUNListLength) / 24) + 1; 3598 3599 for (i = 0; i < nphysicals; i++) { 3600 if (physdev->LUN[i].device_type == 3601 BMIC_DEVICE_TYPE_CONTROLLER 3602 && !is_hba_lunid(physdev->LUN[i].lunid)) { 3603 dev_info(&h->pdev->dev, 3604 "External controller present, activate discovery polling and disable rld caching\n"); 3605 hpsa_disable_rld_caching(h); 3606 h->discovery_polling = 1; 3607 break; 3608 } 3609 } 3610 } 3611 3612 /* Get a device id from inquiry page 0x83 */ 3613 static bool hpsa_vpd_page_supported(struct ctlr_info *h, 3614 unsigned char scsi3addr[], u8 page) 3615 { 3616 int rc; 3617 int i; 3618 int pages; 3619 unsigned char *buf, bufsize; 3620 3621 buf = kzalloc(256, GFP_KERNEL); 3622 if (!buf) 3623 return false; 3624 3625 /* Get the size of the page list first */ 3626 rc = hpsa_scsi_do_inquiry(h, scsi3addr, 3627 VPD_PAGE | HPSA_VPD_SUPPORTED_PAGES, 3628 buf, HPSA_VPD_HEADER_SZ); 3629 if (rc != 0) 3630 goto exit_unsupported; 3631 pages = buf[3]; 3632 if ((pages + HPSA_VPD_HEADER_SZ) <= 255) 3633 bufsize = pages + HPSA_VPD_HEADER_SZ; 3634 else 3635 bufsize = 255; 3636 3637 /* Get the whole VPD page list */ 3638 rc = hpsa_scsi_do_inquiry(h, scsi3addr, 3639 VPD_PAGE | HPSA_VPD_SUPPORTED_PAGES, 3640 buf, bufsize); 3641 if (rc != 0) 3642 goto exit_unsupported; 3643 3644 pages = buf[3]; 3645 for (i = 1; i <= pages; i++) 3646 if (buf[3 + i] == page) 3647 goto exit_supported; 3648 exit_unsupported: 3649 kfree(buf); 3650 return false; 3651 exit_supported: 3652 kfree(buf); 3653 return true; 3654 } 3655 3656 /* 3657 * Called during a scan operation. 3658 * Sets ioaccel status on the new device list, not the existing device list 3659 * 3660 * The device list used during I/O will be updated later in 3661 * adjust_hpsa_scsi_table. 3662 */ 3663 static void hpsa_get_ioaccel_status(struct ctlr_info *h, 3664 unsigned char *scsi3addr, struct hpsa_scsi_dev_t *this_device) 3665 { 3666 int rc; 3667 unsigned char *buf; 3668 u8 ioaccel_status; 3669 3670 this_device->offload_config = 0; 3671 this_device->offload_enabled = 0; 3672 this_device->offload_to_be_enabled = 0; 3673 3674 buf = kzalloc(64, GFP_KERNEL); 3675 if (!buf) 3676 return; 3677 if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_IOACCEL_STATUS)) 3678 goto out; 3679 rc = hpsa_scsi_do_inquiry(h, scsi3addr, 3680 VPD_PAGE | HPSA_VPD_LV_IOACCEL_STATUS, buf, 64); 3681 if (rc != 0) 3682 goto out; 3683 3684 #define IOACCEL_STATUS_BYTE 4 3685 #define OFFLOAD_CONFIGURED_BIT 0x01 3686 #define OFFLOAD_ENABLED_BIT 0x02 3687 ioaccel_status = buf[IOACCEL_STATUS_BYTE]; 3688 this_device->offload_config = 3689 !!(ioaccel_status & OFFLOAD_CONFIGURED_BIT); 3690 if (this_device->offload_config) { 3691 bool offload_enabled = 3692 !!(ioaccel_status & OFFLOAD_ENABLED_BIT); 3693 /* 3694 * Check to see if offload can be enabled. 3695 */ 3696 if (offload_enabled) { 3697 rc = hpsa_get_raid_map(h, scsi3addr, this_device); 3698 if (rc) /* could not load raid_map */ 3699 goto out; 3700 this_device->offload_to_be_enabled = 1; 3701 } 3702 } 3703 3704 out: 3705 kfree(buf); 3706 return; 3707 } 3708 3709 /* Get the device id from inquiry page 0x83 */ 3710 static int hpsa_get_device_id(struct ctlr_info *h, unsigned char *scsi3addr, 3711 unsigned char *device_id, int index, int buflen) 3712 { 3713 int rc; 3714 unsigned char *buf; 3715 3716 /* Does controller have VPD for device id? */ 3717 if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_DEVICE_ID)) 3718 return 1; /* not supported */ 3719 3720 buf = kzalloc(64, GFP_KERNEL); 3721 if (!buf) 3722 return -ENOMEM; 3723 3724 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | 3725 HPSA_VPD_LV_DEVICE_ID, buf, 64); 3726 if (rc == 0) { 3727 if (buflen > 16) 3728 buflen = 16; 3729 memcpy(device_id, &buf[8], buflen); 3730 } 3731 3732 kfree(buf); 3733 3734 return rc; /*0 - got id, otherwise, didn't */ 3735 } 3736 3737 static int hpsa_scsi_do_report_luns(struct ctlr_info *h, int logical, 3738 void *buf, int bufsize, 3739 int extended_response) 3740 { 3741 int rc = IO_OK; 3742 struct CommandList *c; 3743 unsigned char scsi3addr[8]; 3744 struct ErrorInfo *ei; 3745 3746 c = cmd_alloc(h); 3747 3748 /* address the controller */ 3749 memset(scsi3addr, 0, sizeof(scsi3addr)); 3750 if (fill_cmd(c, logical ? HPSA_REPORT_LOG : HPSA_REPORT_PHYS, h, 3751 buf, bufsize, 0, scsi3addr, TYPE_CMD)) { 3752 rc = -EAGAIN; 3753 goto out; 3754 } 3755 if (extended_response) 3756 c->Request.CDB[1] = extended_response; 3757 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE, 3758 NO_TIMEOUT); 3759 if (rc) 3760 goto out; 3761 ei = c->err_info; 3762 if (ei->CommandStatus != 0 && 3763 ei->CommandStatus != CMD_DATA_UNDERRUN) { 3764 hpsa_scsi_interpret_error(h, c); 3765 rc = -EIO; 3766 } else { 3767 struct ReportLUNdata *rld = buf; 3768 3769 if (rld->extended_response_flag != extended_response) { 3770 if (!h->legacy_board) { 3771 dev_err(&h->pdev->dev, 3772 "report luns requested format %u, got %u\n", 3773 extended_response, 3774 rld->extended_response_flag); 3775 rc = -EINVAL; 3776 } else 3777 rc = -EOPNOTSUPP; 3778 } 3779 } 3780 out: 3781 cmd_free(h, c); 3782 return rc; 3783 } 3784 3785 static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h, 3786 struct ReportExtendedLUNdata *buf, int bufsize) 3787 { 3788 int rc; 3789 struct ReportLUNdata *lbuf; 3790 3791 rc = hpsa_scsi_do_report_luns(h, 0, buf, bufsize, 3792 HPSA_REPORT_PHYS_EXTENDED); 3793 if (!rc || rc != -EOPNOTSUPP) 3794 return rc; 3795 3796 /* REPORT PHYS EXTENDED is not supported */ 3797 lbuf = kzalloc(sizeof(*lbuf), GFP_KERNEL); 3798 if (!lbuf) 3799 return -ENOMEM; 3800 3801 rc = hpsa_scsi_do_report_luns(h, 0, lbuf, sizeof(*lbuf), 0); 3802 if (!rc) { 3803 int i; 3804 u32 nphys; 3805 3806 /* Copy ReportLUNdata header */ 3807 memcpy(buf, lbuf, 8); 3808 nphys = be32_to_cpu(*((__be32 *)lbuf->LUNListLength)) / 8; 3809 for (i = 0; i < nphys; i++) 3810 memcpy(buf->LUN[i].lunid, lbuf->LUN[i], 8); 3811 } 3812 kfree(lbuf); 3813 return rc; 3814 } 3815 3816 static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info *h, 3817 struct ReportLUNdata *buf, int bufsize) 3818 { 3819 return hpsa_scsi_do_report_luns(h, 1, buf, bufsize, 0); 3820 } 3821 3822 static inline void hpsa_set_bus_target_lun(struct hpsa_scsi_dev_t *device, 3823 int bus, int target, int lun) 3824 { 3825 device->bus = bus; 3826 device->target = target; 3827 device->lun = lun; 3828 } 3829 3830 /* Use VPD inquiry to get details of volume status */ 3831 static int hpsa_get_volume_status(struct ctlr_info *h, 3832 unsigned char scsi3addr[]) 3833 { 3834 int rc; 3835 int status; 3836 int size; 3837 unsigned char *buf; 3838 3839 buf = kzalloc(64, GFP_KERNEL); 3840 if (!buf) 3841 return HPSA_VPD_LV_STATUS_UNSUPPORTED; 3842 3843 /* Does controller have VPD for logical volume status? */ 3844 if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_STATUS)) 3845 goto exit_failed; 3846 3847 /* Get the size of the VPD return buffer */ 3848 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | HPSA_VPD_LV_STATUS, 3849 buf, HPSA_VPD_HEADER_SZ); 3850 if (rc != 0) 3851 goto exit_failed; 3852 size = buf[3]; 3853 3854 /* Now get the whole VPD buffer */ 3855 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | HPSA_VPD_LV_STATUS, 3856 buf, size + HPSA_VPD_HEADER_SZ); 3857 if (rc != 0) 3858 goto exit_failed; 3859 status = buf[4]; /* status byte */ 3860 3861 kfree(buf); 3862 return status; 3863 exit_failed: 3864 kfree(buf); 3865 return HPSA_VPD_LV_STATUS_UNSUPPORTED; 3866 } 3867 3868 /* Determine offline status of a volume. 3869 * Return either: 3870 * 0 (not offline) 3871 * 0xff (offline for unknown reasons) 3872 * # (integer code indicating one of several NOT READY states 3873 * describing why a volume is to be kept offline) 3874 */ 3875 static unsigned char hpsa_volume_offline(struct ctlr_info *h, 3876 unsigned char scsi3addr[]) 3877 { 3878 struct CommandList *c; 3879 unsigned char *sense; 3880 u8 sense_key, asc, ascq; 3881 int sense_len; 3882 int rc, ldstat = 0; 3883 u16 cmd_status; 3884 u8 scsi_status; 3885 #define ASC_LUN_NOT_READY 0x04 3886 #define ASCQ_LUN_NOT_READY_FORMAT_IN_PROGRESS 0x04 3887 #define ASCQ_LUN_NOT_READY_INITIALIZING_CMD_REQ 0x02 3888 3889 c = cmd_alloc(h); 3890 3891 (void) fill_cmd(c, TEST_UNIT_READY, h, NULL, 0, 0, scsi3addr, TYPE_CMD); 3892 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, 3893 NO_TIMEOUT); 3894 if (rc) { 3895 cmd_free(h, c); 3896 return HPSA_VPD_LV_STATUS_UNSUPPORTED; 3897 } 3898 sense = c->err_info->SenseInfo; 3899 if (c->err_info->SenseLen > sizeof(c->err_info->SenseInfo)) 3900 sense_len = sizeof(c->err_info->SenseInfo); 3901 else 3902 sense_len = c->err_info->SenseLen; 3903 decode_sense_data(sense, sense_len, &sense_key, &asc, &ascq); 3904 cmd_status = c->err_info->CommandStatus; 3905 scsi_status = c->err_info->ScsiStatus; 3906 cmd_free(h, c); 3907 3908 /* Determine the reason for not ready state */ 3909 ldstat = hpsa_get_volume_status(h, scsi3addr); 3910 3911 /* Keep volume offline in certain cases: */ 3912 switch (ldstat) { 3913 case HPSA_LV_FAILED: 3914 case HPSA_LV_UNDERGOING_ERASE: 3915 case HPSA_LV_NOT_AVAILABLE: 3916 case HPSA_LV_UNDERGOING_RPI: 3917 case HPSA_LV_PENDING_RPI: 3918 case HPSA_LV_ENCRYPTED_NO_KEY: 3919 case HPSA_LV_PLAINTEXT_IN_ENCRYPT_ONLY_CONTROLLER: 3920 case HPSA_LV_UNDERGOING_ENCRYPTION: 3921 case HPSA_LV_UNDERGOING_ENCRYPTION_REKEYING: 3922 case HPSA_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER: 3923 return ldstat; 3924 case HPSA_VPD_LV_STATUS_UNSUPPORTED: 3925 /* If VPD status page isn't available, 3926 * use ASC/ASCQ to determine state 3927 */ 3928 if ((ascq == ASCQ_LUN_NOT_READY_FORMAT_IN_PROGRESS) || 3929 (ascq == ASCQ_LUN_NOT_READY_INITIALIZING_CMD_REQ)) 3930 return ldstat; 3931 break; 3932 default: 3933 break; 3934 } 3935 return HPSA_LV_OK; 3936 } 3937 3938 static int hpsa_update_device_info(struct ctlr_info *h, 3939 unsigned char scsi3addr[], struct hpsa_scsi_dev_t *this_device, 3940 unsigned char *is_OBDR_device) 3941 { 3942 3943 #define OBDR_SIG_OFFSET 43 3944 #define OBDR_TAPE_SIG "$DR-10" 3945 #define OBDR_SIG_LEN (sizeof(OBDR_TAPE_SIG) - 1) 3946 #define OBDR_TAPE_INQ_SIZE (OBDR_SIG_OFFSET + OBDR_SIG_LEN) 3947 3948 unsigned char *inq_buff; 3949 unsigned char *obdr_sig; 3950 int rc = 0; 3951 3952 inq_buff = kzalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL); 3953 if (!inq_buff) { 3954 rc = -ENOMEM; 3955 goto bail_out; 3956 } 3957 3958 /* Do an inquiry to the device to see what it is. */ 3959 if (hpsa_scsi_do_inquiry(h, scsi3addr, 0, inq_buff, 3960 (unsigned char) OBDR_TAPE_INQ_SIZE) != 0) { 3961 dev_err(&h->pdev->dev, 3962 "%s: inquiry failed, device will be skipped.\n", 3963 __func__); 3964 rc = HPSA_INQUIRY_FAILED; 3965 goto bail_out; 3966 } 3967 3968 scsi_sanitize_inquiry_string(&inq_buff[8], 8); 3969 scsi_sanitize_inquiry_string(&inq_buff[16], 16); 3970 3971 this_device->devtype = (inq_buff[0] & 0x1f); 3972 memcpy(this_device->scsi3addr, scsi3addr, 8); 3973 memcpy(this_device->vendor, &inq_buff[8], 3974 sizeof(this_device->vendor)); 3975 memcpy(this_device->model, &inq_buff[16], 3976 sizeof(this_device->model)); 3977 this_device->rev = inq_buff[2]; 3978 memset(this_device->device_id, 0, 3979 sizeof(this_device->device_id)); 3980 if (hpsa_get_device_id(h, scsi3addr, this_device->device_id, 8, 3981 sizeof(this_device->device_id)) < 0) { 3982 dev_err(&h->pdev->dev, 3983 "hpsa%d: %s: can't get device id for [%d:%d:%d:%d]\t%s\t%.16s\n", 3984 h->ctlr, __func__, 3985 h->scsi_host->host_no, 3986 this_device->bus, this_device->target, 3987 this_device->lun, 3988 scsi_device_type(this_device->devtype), 3989 this_device->model); 3990 rc = HPSA_LV_FAILED; 3991 goto bail_out; 3992 } 3993 3994 if ((this_device->devtype == TYPE_DISK || 3995 this_device->devtype == TYPE_ZBC) && 3996 is_logical_dev_addr_mode(scsi3addr)) { 3997 unsigned char volume_offline; 3998 3999 hpsa_get_raid_level(h, scsi3addr, &this_device->raid_level); 4000 if (h->fw_support & MISC_FW_RAID_OFFLOAD_BASIC) 4001 hpsa_get_ioaccel_status(h, scsi3addr, this_device); 4002 volume_offline = hpsa_volume_offline(h, scsi3addr); 4003 if (volume_offline == HPSA_VPD_LV_STATUS_UNSUPPORTED && 4004 h->legacy_board) { 4005 /* 4006 * Legacy boards might not support volume status 4007 */ 4008 dev_info(&h->pdev->dev, 4009 "C0:T%d:L%d Volume status not available, assuming online.\n", 4010 this_device->target, this_device->lun); 4011 volume_offline = 0; 4012 } 4013 this_device->volume_offline = volume_offline; 4014 if (volume_offline == HPSA_LV_FAILED) { 4015 rc = HPSA_LV_FAILED; 4016 dev_err(&h->pdev->dev, 4017 "%s: LV failed, device will be skipped.\n", 4018 __func__); 4019 goto bail_out; 4020 } 4021 } else { 4022 this_device->raid_level = RAID_UNKNOWN; 4023 this_device->offload_config = 0; 4024 hpsa_turn_off_ioaccel_for_device(this_device); 4025 this_device->hba_ioaccel_enabled = 0; 4026 this_device->volume_offline = 0; 4027 this_device->queue_depth = h->nr_cmds; 4028 } 4029 4030 if (this_device->external) 4031 this_device->queue_depth = EXTERNAL_QD; 4032 4033 if (is_OBDR_device) { 4034 /* See if this is a One-Button-Disaster-Recovery device 4035 * by looking for "$DR-10" at offset 43 in inquiry data. 4036 */ 4037 obdr_sig = &inq_buff[OBDR_SIG_OFFSET]; 4038 *is_OBDR_device = (this_device->devtype == TYPE_ROM && 4039 strncmp(obdr_sig, OBDR_TAPE_SIG, 4040 OBDR_SIG_LEN) == 0); 4041 } 4042 kfree(inq_buff); 4043 return 0; 4044 4045 bail_out: 4046 kfree(inq_buff); 4047 return rc; 4048 } 4049 4050 /* 4051 * Helper function to assign bus, target, lun mapping of devices. 4052 * Logical drive target and lun are assigned at this time, but 4053 * physical device lun and target assignment are deferred (assigned 4054 * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.) 4055 */ 4056 static void figure_bus_target_lun(struct ctlr_info *h, 4057 u8 *lunaddrbytes, struct hpsa_scsi_dev_t *device) 4058 { 4059 u32 lunid = get_unaligned_le32(lunaddrbytes); 4060 4061 if (!is_logical_dev_addr_mode(lunaddrbytes)) { 4062 /* physical device, target and lun filled in later */ 4063 if (is_hba_lunid(lunaddrbytes)) { 4064 int bus = HPSA_HBA_BUS; 4065 4066 if (!device->rev) 4067 bus = HPSA_LEGACY_HBA_BUS; 4068 hpsa_set_bus_target_lun(device, 4069 bus, 0, lunid & 0x3fff); 4070 } else 4071 /* defer target, lun assignment for physical devices */ 4072 hpsa_set_bus_target_lun(device, 4073 HPSA_PHYSICAL_DEVICE_BUS, -1, -1); 4074 return; 4075 } 4076 /* It's a logical device */ 4077 if (device->external) { 4078 hpsa_set_bus_target_lun(device, 4079 HPSA_EXTERNAL_RAID_VOLUME_BUS, (lunid >> 16) & 0x3fff, 4080 lunid & 0x00ff); 4081 return; 4082 } 4083 hpsa_set_bus_target_lun(device, HPSA_RAID_VOLUME_BUS, 4084 0, lunid & 0x3fff); 4085 } 4086 4087 static int figure_external_status(struct ctlr_info *h, int raid_ctlr_position, 4088 int i, int nphysicals, int nlocal_logicals) 4089 { 4090 /* In report logicals, local logicals are listed first, 4091 * then any externals. 4092 */ 4093 int logicals_start = nphysicals + (raid_ctlr_position == 0); 4094 4095 if (i == raid_ctlr_position) 4096 return 0; 4097 4098 if (i < logicals_start) 4099 return 0; 4100 4101 /* i is in logicals range, but still within local logicals */ 4102 if ((i - nphysicals - (raid_ctlr_position == 0)) < nlocal_logicals) 4103 return 0; 4104 4105 return 1; /* it's an external lun */ 4106 } 4107 4108 /* 4109 * Do CISS_REPORT_PHYS and CISS_REPORT_LOG. Data is returned in physdev, 4110 * logdev. The number of luns in physdev and logdev are returned in 4111 * *nphysicals and *nlogicals, respectively. 4112 * Returns 0 on success, -1 otherwise. 4113 */ 4114 static int hpsa_gather_lun_info(struct ctlr_info *h, 4115 struct ReportExtendedLUNdata *physdev, u32 *nphysicals, 4116 struct ReportLUNdata *logdev, u32 *nlogicals) 4117 { 4118 if (hpsa_scsi_do_report_phys_luns(h, physdev, sizeof(*physdev))) { 4119 dev_err(&h->pdev->dev, "report physical LUNs failed.\n"); 4120 return -1; 4121 } 4122 *nphysicals = be32_to_cpu(*((__be32 *)physdev->LUNListLength)) / 24; 4123 if (*nphysicals > HPSA_MAX_PHYS_LUN) { 4124 dev_warn(&h->pdev->dev, "maximum physical LUNs (%d) exceeded. %d LUNs ignored.\n", 4125 HPSA_MAX_PHYS_LUN, *nphysicals - HPSA_MAX_PHYS_LUN); 4126 *nphysicals = HPSA_MAX_PHYS_LUN; 4127 } 4128 if (hpsa_scsi_do_report_log_luns(h, logdev, sizeof(*logdev))) { 4129 dev_err(&h->pdev->dev, "report logical LUNs failed.\n"); 4130 return -1; 4131 } 4132 *nlogicals = be32_to_cpu(*((__be32 *) logdev->LUNListLength)) / 8; 4133 /* Reject Logicals in excess of our max capability. */ 4134 if (*nlogicals > HPSA_MAX_LUN) { 4135 dev_warn(&h->pdev->dev, 4136 "maximum logical LUNs (%d) exceeded. " 4137 "%d LUNs ignored.\n", HPSA_MAX_LUN, 4138 *nlogicals - HPSA_MAX_LUN); 4139 *nlogicals = HPSA_MAX_LUN; 4140 } 4141 if (*nlogicals + *nphysicals > HPSA_MAX_PHYS_LUN) { 4142 dev_warn(&h->pdev->dev, 4143 "maximum logical + physical LUNs (%d) exceeded. " 4144 "%d LUNs ignored.\n", HPSA_MAX_PHYS_LUN, 4145 *nphysicals + *nlogicals - HPSA_MAX_PHYS_LUN); 4146 *nlogicals = HPSA_MAX_PHYS_LUN - *nphysicals; 4147 } 4148 return 0; 4149 } 4150 4151 static u8 *figure_lunaddrbytes(struct ctlr_info *h, int raid_ctlr_position, 4152 int i, int nphysicals, int nlogicals, 4153 struct ReportExtendedLUNdata *physdev_list, 4154 struct ReportLUNdata *logdev_list) 4155 { 4156 /* Helper function, figure out where the LUN ID info is coming from 4157 * given index i, lists of physical and logical devices, where in 4158 * the list the raid controller is supposed to appear (first or last) 4159 */ 4160 4161 int logicals_start = nphysicals + (raid_ctlr_position == 0); 4162 int last_device = nphysicals + nlogicals + (raid_ctlr_position == 0); 4163 4164 if (i == raid_ctlr_position) 4165 return RAID_CTLR_LUNID; 4166 4167 if (i < logicals_start) 4168 return &physdev_list->LUN[i - 4169 (raid_ctlr_position == 0)].lunid[0]; 4170 4171 if (i < last_device) 4172 return &logdev_list->LUN[i - nphysicals - 4173 (raid_ctlr_position == 0)][0]; 4174 BUG(); 4175 return NULL; 4176 } 4177 4178 /* get physical drive ioaccel handle and queue depth */ 4179 static void hpsa_get_ioaccel_drive_info(struct ctlr_info *h, 4180 struct hpsa_scsi_dev_t *dev, 4181 struct ReportExtendedLUNdata *rlep, int rle_index, 4182 struct bmic_identify_physical_device *id_phys) 4183 { 4184 int rc; 4185 struct ext_report_lun_entry *rle; 4186 4187 if (rle_index < 0 || rle_index >= HPSA_MAX_PHYS_LUN) 4188 return; 4189 4190 rle = &rlep->LUN[rle_index]; 4191 4192 dev->ioaccel_handle = rle->ioaccel_handle; 4193 if ((rle->device_flags & 0x08) && dev->ioaccel_handle) 4194 dev->hba_ioaccel_enabled = 1; 4195 memset(id_phys, 0, sizeof(*id_phys)); 4196 rc = hpsa_bmic_id_physical_device(h, &rle->lunid[0], 4197 GET_BMIC_DRIVE_NUMBER(&rle->lunid[0]), id_phys, 4198 sizeof(*id_phys)); 4199 if (!rc) 4200 /* Reserve space for FW operations */ 4201 #define DRIVE_CMDS_RESERVED_FOR_FW 2 4202 #define DRIVE_QUEUE_DEPTH 7 4203 dev->queue_depth = 4204 le16_to_cpu(id_phys->current_queue_depth_limit) - 4205 DRIVE_CMDS_RESERVED_FOR_FW; 4206 else 4207 dev->queue_depth = DRIVE_QUEUE_DEPTH; /* conservative */ 4208 } 4209 4210 static void hpsa_get_path_info(struct hpsa_scsi_dev_t *this_device, 4211 struct ReportExtendedLUNdata *rlep, int rle_index, 4212 struct bmic_identify_physical_device *id_phys) 4213 { 4214 struct ext_report_lun_entry *rle; 4215 4216 if (rle_index < 0 || rle_index >= HPSA_MAX_PHYS_LUN) 4217 return; 4218 4219 rle = &rlep->LUN[rle_index]; 4220 4221 if ((rle->device_flags & 0x08) && this_device->ioaccel_handle) 4222 this_device->hba_ioaccel_enabled = 1; 4223 4224 memcpy(&this_device->active_path_index, 4225 &id_phys->active_path_number, 4226 sizeof(this_device->active_path_index)); 4227 memcpy(&this_device->path_map, 4228 &id_phys->redundant_path_present_map, 4229 sizeof(this_device->path_map)); 4230 memcpy(&this_device->box, 4231 &id_phys->alternate_paths_phys_box_on_port, 4232 sizeof(this_device->box)); 4233 memcpy(&this_device->phys_connector, 4234 &id_phys->alternate_paths_phys_connector, 4235 sizeof(this_device->phys_connector)); 4236 memcpy(&this_device->bay, 4237 &id_phys->phys_bay_in_box, 4238 sizeof(this_device->bay)); 4239 } 4240 4241 /* get number of local logical disks. */ 4242 static int hpsa_set_local_logical_count(struct ctlr_info *h, 4243 struct bmic_identify_controller *id_ctlr, 4244 u32 *nlocals) 4245 { 4246 int rc; 4247 4248 if (!id_ctlr) { 4249 dev_warn(&h->pdev->dev, "%s: id_ctlr buffer is NULL.\n", 4250 __func__); 4251 return -ENOMEM; 4252 } 4253 memset(id_ctlr, 0, sizeof(*id_ctlr)); 4254 rc = hpsa_bmic_id_controller(h, id_ctlr, sizeof(*id_ctlr)); 4255 if (!rc) 4256 if (id_ctlr->configured_logical_drive_count < 255) 4257 *nlocals = id_ctlr->configured_logical_drive_count; 4258 else 4259 *nlocals = le16_to_cpu( 4260 id_ctlr->extended_logical_unit_count); 4261 else 4262 *nlocals = -1; 4263 return rc; 4264 } 4265 4266 static bool hpsa_is_disk_spare(struct ctlr_info *h, u8 *lunaddrbytes) 4267 { 4268 struct bmic_identify_physical_device *id_phys; 4269 bool is_spare = false; 4270 int rc; 4271 4272 id_phys = kzalloc(sizeof(*id_phys), GFP_KERNEL); 4273 if (!id_phys) 4274 return false; 4275 4276 rc = hpsa_bmic_id_physical_device(h, 4277 lunaddrbytes, 4278 GET_BMIC_DRIVE_NUMBER(lunaddrbytes), 4279 id_phys, sizeof(*id_phys)); 4280 if (rc == 0) 4281 is_spare = (id_phys->more_flags >> 6) & 0x01; 4282 4283 kfree(id_phys); 4284 return is_spare; 4285 } 4286 4287 #define RPL_DEV_FLAG_NON_DISK 0x1 4288 #define RPL_DEV_FLAG_UNCONFIG_DISK_REPORTING_SUPPORTED 0x2 4289 #define RPL_DEV_FLAG_UNCONFIG_DISK 0x4 4290 4291 #define BMIC_DEVICE_TYPE_ENCLOSURE 6 4292 4293 static bool hpsa_skip_device(struct ctlr_info *h, u8 *lunaddrbytes, 4294 struct ext_report_lun_entry *rle) 4295 { 4296 u8 device_flags; 4297 u8 device_type; 4298 4299 if (!MASKED_DEVICE(lunaddrbytes)) 4300 return false; 4301 4302 device_flags = rle->device_flags; 4303 device_type = rle->device_type; 4304 4305 if (device_flags & RPL_DEV_FLAG_NON_DISK) { 4306 if (device_type == BMIC_DEVICE_TYPE_ENCLOSURE) 4307 return false; 4308 return true; 4309 } 4310 4311 if (!(device_flags & RPL_DEV_FLAG_UNCONFIG_DISK_REPORTING_SUPPORTED)) 4312 return false; 4313 4314 if (device_flags & RPL_DEV_FLAG_UNCONFIG_DISK) 4315 return false; 4316 4317 /* 4318 * Spares may be spun down, we do not want to 4319 * do an Inquiry to a RAID set spare drive as 4320 * that would have them spun up, that is a 4321 * performance hit because I/O to the RAID device 4322 * stops while the spin up occurs which can take 4323 * over 50 seconds. 4324 */ 4325 if (hpsa_is_disk_spare(h, lunaddrbytes)) 4326 return true; 4327 4328 return false; 4329 } 4330 4331 static void hpsa_update_scsi_devices(struct ctlr_info *h) 4332 { 4333 /* the idea here is we could get notified 4334 * that some devices have changed, so we do a report 4335 * physical luns and report logical luns cmd, and adjust 4336 * our list of devices accordingly. 4337 * 4338 * The scsi3addr's of devices won't change so long as the 4339 * adapter is not reset. That means we can rescan and 4340 * tell which devices we already know about, vs. new 4341 * devices, vs. disappearing devices. 4342 */ 4343 struct ReportExtendedLUNdata *physdev_list = NULL; 4344 struct ReportLUNdata *logdev_list = NULL; 4345 struct bmic_identify_physical_device *id_phys = NULL; 4346 struct bmic_identify_controller *id_ctlr = NULL; 4347 u32 nphysicals = 0; 4348 u32 nlogicals = 0; 4349 u32 nlocal_logicals = 0; 4350 u32 ndev_allocated = 0; 4351 struct hpsa_scsi_dev_t **currentsd, *this_device, *tmpdevice; 4352 int ncurrent = 0; 4353 int i, n_ext_target_devs, ndevs_to_allocate; 4354 int raid_ctlr_position; 4355 bool physical_device; 4356 DECLARE_BITMAP(lunzerobits, MAX_EXT_TARGETS); 4357 4358 currentsd = kcalloc(HPSA_MAX_DEVICES, sizeof(*currentsd), GFP_KERNEL); 4359 physdev_list = kzalloc(sizeof(*physdev_list), GFP_KERNEL); 4360 logdev_list = kzalloc(sizeof(*logdev_list), GFP_KERNEL); 4361 tmpdevice = kzalloc(sizeof(*tmpdevice), GFP_KERNEL); 4362 id_phys = kzalloc(sizeof(*id_phys), GFP_KERNEL); 4363 id_ctlr = kzalloc(sizeof(*id_ctlr), GFP_KERNEL); 4364 4365 if (!currentsd || !physdev_list || !logdev_list || 4366 !tmpdevice || !id_phys || !id_ctlr) { 4367 dev_err(&h->pdev->dev, "out of memory\n"); 4368 goto out; 4369 } 4370 memset(lunzerobits, 0, sizeof(lunzerobits)); 4371 4372 h->drv_req_rescan = 0; /* cancel scheduled rescan - we're doing it. */ 4373 4374 if (hpsa_gather_lun_info(h, physdev_list, &nphysicals, 4375 logdev_list, &nlogicals)) { 4376 h->drv_req_rescan = 1; 4377 goto out; 4378 } 4379 4380 /* Set number of local logicals (non PTRAID) */ 4381 if (hpsa_set_local_logical_count(h, id_ctlr, &nlocal_logicals)) { 4382 dev_warn(&h->pdev->dev, 4383 "%s: Can't determine number of local logical devices.\n", 4384 __func__); 4385 } 4386 4387 /* We might see up to the maximum number of logical and physical disks 4388 * plus external target devices, and a device for the local RAID 4389 * controller. 4390 */ 4391 ndevs_to_allocate = nphysicals + nlogicals + MAX_EXT_TARGETS + 1; 4392 4393 hpsa_ext_ctrl_present(h, physdev_list); 4394 4395 /* Allocate the per device structures */ 4396 for (i = 0; i < ndevs_to_allocate; i++) { 4397 if (i >= HPSA_MAX_DEVICES) { 4398 dev_warn(&h->pdev->dev, "maximum devices (%d) exceeded." 4399 " %d devices ignored.\n", HPSA_MAX_DEVICES, 4400 ndevs_to_allocate - HPSA_MAX_DEVICES); 4401 break; 4402 } 4403 4404 currentsd[i] = kzalloc(sizeof(*currentsd[i]), GFP_KERNEL); 4405 if (!currentsd[i]) { 4406 h->drv_req_rescan = 1; 4407 goto out; 4408 } 4409 ndev_allocated++; 4410 } 4411 4412 if (is_scsi_rev_5(h)) 4413 raid_ctlr_position = 0; 4414 else 4415 raid_ctlr_position = nphysicals + nlogicals; 4416 4417 /* adjust our table of devices */ 4418 n_ext_target_devs = 0; 4419 for (i = 0; i < nphysicals + nlogicals + 1; i++) { 4420 u8 *lunaddrbytes, is_OBDR = 0; 4421 int rc = 0; 4422 int phys_dev_index = i - (raid_ctlr_position == 0); 4423 bool skip_device = false; 4424 4425 memset(tmpdevice, 0, sizeof(*tmpdevice)); 4426 4427 physical_device = i < nphysicals + (raid_ctlr_position == 0); 4428 4429 /* Figure out where the LUN ID info is coming from */ 4430 lunaddrbytes = figure_lunaddrbytes(h, raid_ctlr_position, 4431 i, nphysicals, nlogicals, physdev_list, logdev_list); 4432 4433 /* Determine if this is a lun from an external target array */ 4434 tmpdevice->external = 4435 figure_external_status(h, raid_ctlr_position, i, 4436 nphysicals, nlocal_logicals); 4437 4438 /* 4439 * Skip over some devices such as a spare. 4440 */ 4441 if (phys_dev_index >= 0 && !tmpdevice->external && 4442 physical_device) { 4443 skip_device = hpsa_skip_device(h, lunaddrbytes, 4444 &physdev_list->LUN[phys_dev_index]); 4445 if (skip_device) 4446 continue; 4447 } 4448 4449 /* Get device type, vendor, model, device id, raid_map */ 4450 rc = hpsa_update_device_info(h, lunaddrbytes, tmpdevice, 4451 &is_OBDR); 4452 if (rc == -ENOMEM) { 4453 dev_warn(&h->pdev->dev, 4454 "Out of memory, rescan deferred.\n"); 4455 h->drv_req_rescan = 1; 4456 goto out; 4457 } 4458 if (rc) { 4459 h->drv_req_rescan = 1; 4460 continue; 4461 } 4462 4463 figure_bus_target_lun(h, lunaddrbytes, tmpdevice); 4464 this_device = currentsd[ncurrent]; 4465 4466 *this_device = *tmpdevice; 4467 this_device->physical_device = physical_device; 4468 4469 /* 4470 * Expose all devices except for physical devices that 4471 * are masked. 4472 */ 4473 if (MASKED_DEVICE(lunaddrbytes) && this_device->physical_device) 4474 this_device->expose_device = 0; 4475 else 4476 this_device->expose_device = 1; 4477 4478 4479 /* 4480 * Get the SAS address for physical devices that are exposed. 4481 */ 4482 if (this_device->physical_device && this_device->expose_device) 4483 hpsa_get_sas_address(h, lunaddrbytes, this_device); 4484 4485 switch (this_device->devtype) { 4486 case TYPE_ROM: 4487 /* We don't *really* support actual CD-ROM devices, 4488 * just "One Button Disaster Recovery" tape drive 4489 * which temporarily pretends to be a CD-ROM drive. 4490 * So we check that the device is really an OBDR tape 4491 * device by checking for "$DR-10" in bytes 43-48 of 4492 * the inquiry data. 4493 */ 4494 if (is_OBDR) 4495 ncurrent++; 4496 break; 4497 case TYPE_DISK: 4498 case TYPE_ZBC: 4499 if (this_device->physical_device) { 4500 /* The disk is in HBA mode. */ 4501 /* Never use RAID mapper in HBA mode. */ 4502 this_device->offload_enabled = 0; 4503 hpsa_get_ioaccel_drive_info(h, this_device, 4504 physdev_list, phys_dev_index, id_phys); 4505 hpsa_get_path_info(this_device, 4506 physdev_list, phys_dev_index, id_phys); 4507 } 4508 ncurrent++; 4509 break; 4510 case TYPE_TAPE: 4511 case TYPE_MEDIUM_CHANGER: 4512 ncurrent++; 4513 break; 4514 case TYPE_ENCLOSURE: 4515 if (!this_device->external) 4516 hpsa_get_enclosure_info(h, lunaddrbytes, 4517 physdev_list, phys_dev_index, 4518 this_device); 4519 ncurrent++; 4520 break; 4521 case TYPE_RAID: 4522 /* Only present the Smartarray HBA as a RAID controller. 4523 * If it's a RAID controller other than the HBA itself 4524 * (an external RAID controller, MSA500 or similar) 4525 * don't present it. 4526 */ 4527 if (!is_hba_lunid(lunaddrbytes)) 4528 break; 4529 ncurrent++; 4530 break; 4531 default: 4532 break; 4533 } 4534 if (ncurrent >= HPSA_MAX_DEVICES) 4535 break; 4536 } 4537 4538 if (h->sas_host == NULL) { 4539 int rc = 0; 4540 4541 rc = hpsa_add_sas_host(h); 4542 if (rc) { 4543 dev_warn(&h->pdev->dev, 4544 "Could not add sas host %d\n", rc); 4545 goto out; 4546 } 4547 } 4548 4549 adjust_hpsa_scsi_table(h, currentsd, ncurrent); 4550 out: 4551 kfree(tmpdevice); 4552 for (i = 0; i < ndev_allocated; i++) 4553 kfree(currentsd[i]); 4554 kfree(currentsd); 4555 kfree(physdev_list); 4556 kfree(logdev_list); 4557 kfree(id_ctlr); 4558 kfree(id_phys); 4559 } 4560 4561 static void hpsa_set_sg_descriptor(struct SGDescriptor *desc, 4562 struct scatterlist *sg) 4563 { 4564 u64 addr64 = (u64) sg_dma_address(sg); 4565 unsigned int len = sg_dma_len(sg); 4566 4567 desc->Addr = cpu_to_le64(addr64); 4568 desc->Len = cpu_to_le32(len); 4569 desc->Ext = 0; 4570 } 4571 4572 /* 4573 * hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci 4574 * dma mapping and fills in the scatter gather entries of the 4575 * hpsa command, cp. 4576 */ 4577 static int hpsa_scatter_gather(struct ctlr_info *h, 4578 struct CommandList *cp, 4579 struct scsi_cmnd *cmd) 4580 { 4581 struct scatterlist *sg; 4582 int use_sg, i, sg_limit, chained, last_sg; 4583 struct SGDescriptor *curr_sg; 4584 4585 BUG_ON(scsi_sg_count(cmd) > h->maxsgentries); 4586 4587 use_sg = scsi_dma_map(cmd); 4588 if (use_sg < 0) 4589 return use_sg; 4590 4591 if (!use_sg) 4592 goto sglist_finished; 4593 4594 /* 4595 * If the number of entries is greater than the max for a single list, 4596 * then we have a chained list; we will set up all but one entry in the 4597 * first list (the last entry is saved for link information); 4598 * otherwise, we don't have a chained list and we'll set up at each of 4599 * the entries in the one list. 4600 */ 4601 curr_sg = cp->SG; 4602 chained = use_sg > h->max_cmd_sg_entries; 4603 sg_limit = chained ? h->max_cmd_sg_entries - 1 : use_sg; 4604 last_sg = scsi_sg_count(cmd) - 1; 4605 scsi_for_each_sg(cmd, sg, sg_limit, i) { 4606 hpsa_set_sg_descriptor(curr_sg, sg); 4607 curr_sg++; 4608 } 4609 4610 if (chained) { 4611 /* 4612 * Continue with the chained list. Set curr_sg to the chained 4613 * list. Modify the limit to the total count less the entries 4614 * we've already set up. Resume the scan at the list entry 4615 * where the previous loop left off. 4616 */ 4617 curr_sg = h->cmd_sg_list[cp->cmdindex]; 4618 sg_limit = use_sg - sg_limit; 4619 for_each_sg(sg, sg, sg_limit, i) { 4620 hpsa_set_sg_descriptor(curr_sg, sg); 4621 curr_sg++; 4622 } 4623 } 4624 4625 /* Back the pointer up to the last entry and mark it as "last". */ 4626 (curr_sg - 1)->Ext = cpu_to_le32(HPSA_SG_LAST); 4627 4628 if (use_sg + chained > h->maxSG) 4629 h->maxSG = use_sg + chained; 4630 4631 if (chained) { 4632 cp->Header.SGList = h->max_cmd_sg_entries; 4633 cp->Header.SGTotal = cpu_to_le16(use_sg + 1); 4634 if (hpsa_map_sg_chain_block(h, cp)) { 4635 scsi_dma_unmap(cmd); 4636 return -1; 4637 } 4638 return 0; 4639 } 4640 4641 sglist_finished: 4642 4643 cp->Header.SGList = (u8) use_sg; /* no. SGs contig in this cmd */ 4644 cp->Header.SGTotal = cpu_to_le16(use_sg); /* total sgs in cmd list */ 4645 return 0; 4646 } 4647 4648 static inline void warn_zero_length_transfer(struct ctlr_info *h, 4649 u8 *cdb, int cdb_len, 4650 const char *func) 4651 { 4652 dev_warn(&h->pdev->dev, 4653 "%s: Blocking zero-length request: CDB:%*phN\n", 4654 func, cdb_len, cdb); 4655 } 4656 4657 #define IO_ACCEL_INELIGIBLE 1 4658 /* zero-length transfers trigger hardware errors. */ 4659 static bool is_zero_length_transfer(u8 *cdb) 4660 { 4661 u32 block_cnt; 4662 4663 /* Block zero-length transfer sizes on certain commands. */ 4664 switch (cdb[0]) { 4665 case READ_10: 4666 case WRITE_10: 4667 case VERIFY: /* 0x2F */ 4668 case WRITE_VERIFY: /* 0x2E */ 4669 block_cnt = get_unaligned_be16(&cdb[7]); 4670 break; 4671 case READ_12: 4672 case WRITE_12: 4673 case VERIFY_12: /* 0xAF */ 4674 case WRITE_VERIFY_12: /* 0xAE */ 4675 block_cnt = get_unaligned_be32(&cdb[6]); 4676 break; 4677 case READ_16: 4678 case WRITE_16: 4679 case VERIFY_16: /* 0x8F */ 4680 block_cnt = get_unaligned_be32(&cdb[10]); 4681 break; 4682 default: 4683 return false; 4684 } 4685 4686 return block_cnt == 0; 4687 } 4688 4689 static int fixup_ioaccel_cdb(u8 *cdb, int *cdb_len) 4690 { 4691 int is_write = 0; 4692 u32 block; 4693 u32 block_cnt; 4694 4695 /* Perform some CDB fixups if needed using 10 byte reads/writes only */ 4696 switch (cdb[0]) { 4697 case WRITE_6: 4698 case WRITE_12: 4699 is_write = 1; 4700 fallthrough; 4701 case READ_6: 4702 case READ_12: 4703 if (*cdb_len == 6) { 4704 block = (((cdb[1] & 0x1F) << 16) | 4705 (cdb[2] << 8) | 4706 cdb[3]); 4707 block_cnt = cdb[4]; 4708 if (block_cnt == 0) 4709 block_cnt = 256; 4710 } else { 4711 BUG_ON(*cdb_len != 12); 4712 block = get_unaligned_be32(&cdb[2]); 4713 block_cnt = get_unaligned_be32(&cdb[6]); 4714 } 4715 if (block_cnt > 0xffff) 4716 return IO_ACCEL_INELIGIBLE; 4717 4718 cdb[0] = is_write ? WRITE_10 : READ_10; 4719 cdb[1] = 0; 4720 cdb[2] = (u8) (block >> 24); 4721 cdb[3] = (u8) (block >> 16); 4722 cdb[4] = (u8) (block >> 8); 4723 cdb[5] = (u8) (block); 4724 cdb[6] = 0; 4725 cdb[7] = (u8) (block_cnt >> 8); 4726 cdb[8] = (u8) (block_cnt); 4727 cdb[9] = 0; 4728 *cdb_len = 10; 4729 break; 4730 } 4731 return 0; 4732 } 4733 4734 static int hpsa_scsi_ioaccel1_queue_command(struct ctlr_info *h, 4735 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len, 4736 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk) 4737 { 4738 struct scsi_cmnd *cmd = c->scsi_cmd; 4739 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[c->cmdindex]; 4740 unsigned int len; 4741 unsigned int total_len = 0; 4742 struct scatterlist *sg; 4743 u64 addr64; 4744 int use_sg, i; 4745 struct SGDescriptor *curr_sg; 4746 u32 control = IOACCEL1_CONTROL_SIMPLEQUEUE; 4747 4748 /* TODO: implement chaining support */ 4749 if (scsi_sg_count(cmd) > h->ioaccel_maxsg) { 4750 atomic_dec(&phys_disk->ioaccel_cmds_out); 4751 return IO_ACCEL_INELIGIBLE; 4752 } 4753 4754 BUG_ON(cmd->cmd_len > IOACCEL1_IOFLAGS_CDBLEN_MAX); 4755 4756 if (is_zero_length_transfer(cdb)) { 4757 warn_zero_length_transfer(h, cdb, cdb_len, __func__); 4758 atomic_dec(&phys_disk->ioaccel_cmds_out); 4759 return IO_ACCEL_INELIGIBLE; 4760 } 4761 4762 if (fixup_ioaccel_cdb(cdb, &cdb_len)) { 4763 atomic_dec(&phys_disk->ioaccel_cmds_out); 4764 return IO_ACCEL_INELIGIBLE; 4765 } 4766 4767 c->cmd_type = CMD_IOACCEL1; 4768 4769 /* Adjust the DMA address to point to the accelerated command buffer */ 4770 c->busaddr = (u32) h->ioaccel_cmd_pool_dhandle + 4771 (c->cmdindex * sizeof(*cp)); 4772 BUG_ON(c->busaddr & 0x0000007F); 4773 4774 use_sg = scsi_dma_map(cmd); 4775 if (use_sg < 0) { 4776 atomic_dec(&phys_disk->ioaccel_cmds_out); 4777 return use_sg; 4778 } 4779 4780 if (use_sg) { 4781 curr_sg = cp->SG; 4782 scsi_for_each_sg(cmd, sg, use_sg, i) { 4783 addr64 = (u64) sg_dma_address(sg); 4784 len = sg_dma_len(sg); 4785 total_len += len; 4786 curr_sg->Addr = cpu_to_le64(addr64); 4787 curr_sg->Len = cpu_to_le32(len); 4788 curr_sg->Ext = cpu_to_le32(0); 4789 curr_sg++; 4790 } 4791 (--curr_sg)->Ext = cpu_to_le32(HPSA_SG_LAST); 4792 4793 switch (cmd->sc_data_direction) { 4794 case DMA_TO_DEVICE: 4795 control |= IOACCEL1_CONTROL_DATA_OUT; 4796 break; 4797 case DMA_FROM_DEVICE: 4798 control |= IOACCEL1_CONTROL_DATA_IN; 4799 break; 4800 case DMA_NONE: 4801 control |= IOACCEL1_CONTROL_NODATAXFER; 4802 break; 4803 default: 4804 dev_err(&h->pdev->dev, "unknown data direction: %d\n", 4805 cmd->sc_data_direction); 4806 BUG(); 4807 break; 4808 } 4809 } else { 4810 control |= IOACCEL1_CONTROL_NODATAXFER; 4811 } 4812 4813 c->Header.SGList = use_sg; 4814 /* Fill out the command structure to submit */ 4815 cp->dev_handle = cpu_to_le16(ioaccel_handle & 0xFFFF); 4816 cp->transfer_len = cpu_to_le32(total_len); 4817 cp->io_flags = cpu_to_le16(IOACCEL1_IOFLAGS_IO_REQ | 4818 (cdb_len & IOACCEL1_IOFLAGS_CDBLEN_MASK)); 4819 cp->control = cpu_to_le32(control); 4820 memcpy(cp->CDB, cdb, cdb_len); 4821 memcpy(cp->CISS_LUN, scsi3addr, 8); 4822 /* Tag was already set at init time. */ 4823 enqueue_cmd_and_start_io(h, c); 4824 return 0; 4825 } 4826 4827 /* 4828 * Queue a command directly to a device behind the controller using the 4829 * I/O accelerator path. 4830 */ 4831 static int hpsa_scsi_ioaccel_direct_map(struct ctlr_info *h, 4832 struct CommandList *c) 4833 { 4834 struct scsi_cmnd *cmd = c->scsi_cmd; 4835 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata; 4836 4837 if (!dev) 4838 return -1; 4839 4840 c->phys_disk = dev; 4841 4842 if (dev->in_reset) 4843 return -1; 4844 4845 return hpsa_scsi_ioaccel_queue_command(h, c, dev->ioaccel_handle, 4846 cmd->cmnd, cmd->cmd_len, dev->scsi3addr, dev); 4847 } 4848 4849 /* 4850 * Set encryption parameters for the ioaccel2 request 4851 */ 4852 static void set_encrypt_ioaccel2(struct ctlr_info *h, 4853 struct CommandList *c, struct io_accel2_cmd *cp) 4854 { 4855 struct scsi_cmnd *cmd = c->scsi_cmd; 4856 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata; 4857 struct raid_map_data *map = &dev->raid_map; 4858 u64 first_block; 4859 4860 /* Are we doing encryption on this device */ 4861 if (!(le16_to_cpu(map->flags) & RAID_MAP_FLAG_ENCRYPT_ON)) 4862 return; 4863 /* Set the data encryption key index. */ 4864 cp->dekindex = map->dekindex; 4865 4866 /* Set the encryption enable flag, encoded into direction field. */ 4867 cp->direction |= IOACCEL2_DIRECTION_ENCRYPT_MASK; 4868 4869 /* Set encryption tweak values based on logical block address 4870 * If block size is 512, tweak value is LBA. 4871 * For other block sizes, tweak is (LBA * block size)/ 512) 4872 */ 4873 switch (cmd->cmnd[0]) { 4874 /* Required? 6-byte cdbs eliminated by fixup_ioaccel_cdb */ 4875 case READ_6: 4876 case WRITE_6: 4877 first_block = (((cmd->cmnd[1] & 0x1F) << 16) | 4878 (cmd->cmnd[2] << 8) | 4879 cmd->cmnd[3]); 4880 break; 4881 case WRITE_10: 4882 case READ_10: 4883 /* Required? 12-byte cdbs eliminated by fixup_ioaccel_cdb */ 4884 case WRITE_12: 4885 case READ_12: 4886 first_block = get_unaligned_be32(&cmd->cmnd[2]); 4887 break; 4888 case WRITE_16: 4889 case READ_16: 4890 first_block = get_unaligned_be64(&cmd->cmnd[2]); 4891 break; 4892 default: 4893 dev_err(&h->pdev->dev, 4894 "ERROR: %s: size (0x%x) not supported for encryption\n", 4895 __func__, cmd->cmnd[0]); 4896 BUG(); 4897 break; 4898 } 4899 4900 if (le32_to_cpu(map->volume_blk_size) != 512) 4901 first_block = first_block * 4902 le32_to_cpu(map->volume_blk_size)/512; 4903 4904 cp->tweak_lower = cpu_to_le32(first_block); 4905 cp->tweak_upper = cpu_to_le32(first_block >> 32); 4906 } 4907 4908 static int hpsa_scsi_ioaccel2_queue_command(struct ctlr_info *h, 4909 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len, 4910 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk) 4911 { 4912 struct scsi_cmnd *cmd = c->scsi_cmd; 4913 struct io_accel2_cmd *cp = &h->ioaccel2_cmd_pool[c->cmdindex]; 4914 struct ioaccel2_sg_element *curr_sg; 4915 int use_sg, i; 4916 struct scatterlist *sg; 4917 u64 addr64; 4918 u32 len; 4919 u32 total_len = 0; 4920 4921 if (!cmd->device) 4922 return -1; 4923 4924 if (!cmd->device->hostdata) 4925 return -1; 4926 4927 BUG_ON(scsi_sg_count(cmd) > h->maxsgentries); 4928 4929 if (is_zero_length_transfer(cdb)) { 4930 warn_zero_length_transfer(h, cdb, cdb_len, __func__); 4931 atomic_dec(&phys_disk->ioaccel_cmds_out); 4932 return IO_ACCEL_INELIGIBLE; 4933 } 4934 4935 if (fixup_ioaccel_cdb(cdb, &cdb_len)) { 4936 atomic_dec(&phys_disk->ioaccel_cmds_out); 4937 return IO_ACCEL_INELIGIBLE; 4938 } 4939 4940 c->cmd_type = CMD_IOACCEL2; 4941 /* Adjust the DMA address to point to the accelerated command buffer */ 4942 c->busaddr = (u32) h->ioaccel2_cmd_pool_dhandle + 4943 (c->cmdindex * sizeof(*cp)); 4944 BUG_ON(c->busaddr & 0x0000007F); 4945 4946 memset(cp, 0, sizeof(*cp)); 4947 cp->IU_type = IOACCEL2_IU_TYPE; 4948 4949 use_sg = scsi_dma_map(cmd); 4950 if (use_sg < 0) { 4951 atomic_dec(&phys_disk->ioaccel_cmds_out); 4952 return use_sg; 4953 } 4954 4955 if (use_sg) { 4956 curr_sg = cp->sg; 4957 if (use_sg > h->ioaccel_maxsg) { 4958 addr64 = le64_to_cpu( 4959 h->ioaccel2_cmd_sg_list[c->cmdindex]->address); 4960 curr_sg->address = cpu_to_le64(addr64); 4961 curr_sg->length = 0; 4962 curr_sg->reserved[0] = 0; 4963 curr_sg->reserved[1] = 0; 4964 curr_sg->reserved[2] = 0; 4965 curr_sg->chain_indicator = IOACCEL2_CHAIN; 4966 4967 curr_sg = h->ioaccel2_cmd_sg_list[c->cmdindex]; 4968 } 4969 scsi_for_each_sg(cmd, sg, use_sg, i) { 4970 addr64 = (u64) sg_dma_address(sg); 4971 len = sg_dma_len(sg); 4972 total_len += len; 4973 curr_sg->address = cpu_to_le64(addr64); 4974 curr_sg->length = cpu_to_le32(len); 4975 curr_sg->reserved[0] = 0; 4976 curr_sg->reserved[1] = 0; 4977 curr_sg->reserved[2] = 0; 4978 curr_sg->chain_indicator = 0; 4979 curr_sg++; 4980 } 4981 4982 /* 4983 * Set the last s/g element bit 4984 */ 4985 (curr_sg - 1)->chain_indicator = IOACCEL2_LAST_SG; 4986 4987 switch (cmd->sc_data_direction) { 4988 case DMA_TO_DEVICE: 4989 cp->direction &= ~IOACCEL2_DIRECTION_MASK; 4990 cp->direction |= IOACCEL2_DIR_DATA_OUT; 4991 break; 4992 case DMA_FROM_DEVICE: 4993 cp->direction &= ~IOACCEL2_DIRECTION_MASK; 4994 cp->direction |= IOACCEL2_DIR_DATA_IN; 4995 break; 4996 case DMA_NONE: 4997 cp->direction &= ~IOACCEL2_DIRECTION_MASK; 4998 cp->direction |= IOACCEL2_DIR_NO_DATA; 4999 break; 5000 default: 5001 dev_err(&h->pdev->dev, "unknown data direction: %d\n", 5002 cmd->sc_data_direction); 5003 BUG(); 5004 break; 5005 } 5006 } else { 5007 cp->direction &= ~IOACCEL2_DIRECTION_MASK; 5008 cp->direction |= IOACCEL2_DIR_NO_DATA; 5009 } 5010 5011 /* Set encryption parameters, if necessary */ 5012 set_encrypt_ioaccel2(h, c, cp); 5013 5014 cp->scsi_nexus = cpu_to_le32(ioaccel_handle); 5015 cp->Tag = cpu_to_le32(c->cmdindex << DIRECT_LOOKUP_SHIFT); 5016 memcpy(cp->cdb, cdb, sizeof(cp->cdb)); 5017 5018 cp->data_len = cpu_to_le32(total_len); 5019 cp->err_ptr = cpu_to_le64(c->busaddr + 5020 offsetof(struct io_accel2_cmd, error_data)); 5021 cp->err_len = cpu_to_le32(sizeof(cp->error_data)); 5022 5023 /* fill in sg elements */ 5024 if (use_sg > h->ioaccel_maxsg) { 5025 cp->sg_count = 1; 5026 cp->sg[0].length = cpu_to_le32(use_sg * sizeof(cp->sg[0])); 5027 if (hpsa_map_ioaccel2_sg_chain_block(h, cp, c)) { 5028 atomic_dec(&phys_disk->ioaccel_cmds_out); 5029 scsi_dma_unmap(cmd); 5030 return -1; 5031 } 5032 } else 5033 cp->sg_count = (u8) use_sg; 5034 5035 if (phys_disk->in_reset) { 5036 cmd->result = DID_RESET << 16; 5037 return -1; 5038 } 5039 5040 enqueue_cmd_and_start_io(h, c); 5041 return 0; 5042 } 5043 5044 /* 5045 * Queue a command to the correct I/O accelerator path. 5046 */ 5047 static int hpsa_scsi_ioaccel_queue_command(struct ctlr_info *h, 5048 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len, 5049 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk) 5050 { 5051 if (!c->scsi_cmd->device) 5052 return -1; 5053 5054 if (!c->scsi_cmd->device->hostdata) 5055 return -1; 5056 5057 if (phys_disk->in_reset) 5058 return -1; 5059 5060 /* Try to honor the device's queue depth */ 5061 if (atomic_inc_return(&phys_disk->ioaccel_cmds_out) > 5062 phys_disk->queue_depth) { 5063 atomic_dec(&phys_disk->ioaccel_cmds_out); 5064 return IO_ACCEL_INELIGIBLE; 5065 } 5066 if (h->transMethod & CFGTBL_Trans_io_accel1) 5067 return hpsa_scsi_ioaccel1_queue_command(h, c, ioaccel_handle, 5068 cdb, cdb_len, scsi3addr, 5069 phys_disk); 5070 else 5071 return hpsa_scsi_ioaccel2_queue_command(h, c, ioaccel_handle, 5072 cdb, cdb_len, scsi3addr, 5073 phys_disk); 5074 } 5075 5076 static void raid_map_helper(struct raid_map_data *map, 5077 int offload_to_mirror, u32 *map_index, u32 *current_group) 5078 { 5079 if (offload_to_mirror == 0) { 5080 /* use physical disk in the first mirrored group. */ 5081 *map_index %= le16_to_cpu(map->data_disks_per_row); 5082 return; 5083 } 5084 do { 5085 /* determine mirror group that *map_index indicates */ 5086 *current_group = *map_index / 5087 le16_to_cpu(map->data_disks_per_row); 5088 if (offload_to_mirror == *current_group) 5089 continue; 5090 if (*current_group < le16_to_cpu(map->layout_map_count) - 1) { 5091 /* select map index from next group */ 5092 *map_index += le16_to_cpu(map->data_disks_per_row); 5093 (*current_group)++; 5094 } else { 5095 /* select map index from first group */ 5096 *map_index %= le16_to_cpu(map->data_disks_per_row); 5097 *current_group = 0; 5098 } 5099 } while (offload_to_mirror != *current_group); 5100 } 5101 5102 /* 5103 * Attempt to perform offload RAID mapping for a logical volume I/O. 5104 */ 5105 static int hpsa_scsi_ioaccel_raid_map(struct ctlr_info *h, 5106 struct CommandList *c) 5107 { 5108 struct scsi_cmnd *cmd = c->scsi_cmd; 5109 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata; 5110 struct raid_map_data *map = &dev->raid_map; 5111 struct raid_map_disk_data *dd = &map->data[0]; 5112 int is_write = 0; 5113 u32 map_index; 5114 u64 first_block, last_block; 5115 u32 block_cnt; 5116 u32 blocks_per_row; 5117 u64 first_row, last_row; 5118 u32 first_row_offset, last_row_offset; 5119 u32 first_column, last_column; 5120 u64 r0_first_row, r0_last_row; 5121 u32 r5or6_blocks_per_row; 5122 u64 r5or6_first_row, r5or6_last_row; 5123 u32 r5or6_first_row_offset, r5or6_last_row_offset; 5124 u32 r5or6_first_column, r5or6_last_column; 5125 u32 total_disks_per_row; 5126 u32 stripesize; 5127 u32 first_group, last_group, current_group; 5128 u32 map_row; 5129 u32 disk_handle; 5130 u64 disk_block; 5131 u32 disk_block_cnt; 5132 u8 cdb[16]; 5133 u8 cdb_len; 5134 u16 strip_size; 5135 #if BITS_PER_LONG == 32 5136 u64 tmpdiv; 5137 #endif 5138 int offload_to_mirror; 5139 5140 if (!dev) 5141 return -1; 5142 5143 if (dev->in_reset) 5144 return -1; 5145 5146 /* check for valid opcode, get LBA and block count */ 5147 switch (cmd->cmnd[0]) { 5148 case WRITE_6: 5149 is_write = 1; 5150 fallthrough; 5151 case READ_6: 5152 first_block = (((cmd->cmnd[1] & 0x1F) << 16) | 5153 (cmd->cmnd[2] << 8) | 5154 cmd->cmnd[3]); 5155 block_cnt = cmd->cmnd[4]; 5156 if (block_cnt == 0) 5157 block_cnt = 256; 5158 break; 5159 case WRITE_10: 5160 is_write = 1; 5161 fallthrough; 5162 case READ_10: 5163 first_block = 5164 (((u64) cmd->cmnd[2]) << 24) | 5165 (((u64) cmd->cmnd[3]) << 16) | 5166 (((u64) cmd->cmnd[4]) << 8) | 5167 cmd->cmnd[5]; 5168 block_cnt = 5169 (((u32) cmd->cmnd[7]) << 8) | 5170 cmd->cmnd[8]; 5171 break; 5172 case WRITE_12: 5173 is_write = 1; 5174 fallthrough; 5175 case READ_12: 5176 first_block = 5177 (((u64) cmd->cmnd[2]) << 24) | 5178 (((u64) cmd->cmnd[3]) << 16) | 5179 (((u64) cmd->cmnd[4]) << 8) | 5180 cmd->cmnd[5]; 5181 block_cnt = 5182 (((u32) cmd->cmnd[6]) << 24) | 5183 (((u32) cmd->cmnd[7]) << 16) | 5184 (((u32) cmd->cmnd[8]) << 8) | 5185 cmd->cmnd[9]; 5186 break; 5187 case WRITE_16: 5188 is_write = 1; 5189 fallthrough; 5190 case READ_16: 5191 first_block = 5192 (((u64) cmd->cmnd[2]) << 56) | 5193 (((u64) cmd->cmnd[3]) << 48) | 5194 (((u64) cmd->cmnd[4]) << 40) | 5195 (((u64) cmd->cmnd[5]) << 32) | 5196 (((u64) cmd->cmnd[6]) << 24) | 5197 (((u64) cmd->cmnd[7]) << 16) | 5198 (((u64) cmd->cmnd[8]) << 8) | 5199 cmd->cmnd[9]; 5200 block_cnt = 5201 (((u32) cmd->cmnd[10]) << 24) | 5202 (((u32) cmd->cmnd[11]) << 16) | 5203 (((u32) cmd->cmnd[12]) << 8) | 5204 cmd->cmnd[13]; 5205 break; 5206 default: 5207 return IO_ACCEL_INELIGIBLE; /* process via normal I/O path */ 5208 } 5209 last_block = first_block + block_cnt - 1; 5210 5211 /* check for write to non-RAID-0 */ 5212 if (is_write && dev->raid_level != 0) 5213 return IO_ACCEL_INELIGIBLE; 5214 5215 /* check for invalid block or wraparound */ 5216 if (last_block >= le64_to_cpu(map->volume_blk_cnt) || 5217 last_block < first_block) 5218 return IO_ACCEL_INELIGIBLE; 5219 5220 /* calculate stripe information for the request */ 5221 blocks_per_row = le16_to_cpu(map->data_disks_per_row) * 5222 le16_to_cpu(map->strip_size); 5223 strip_size = le16_to_cpu(map->strip_size); 5224 #if BITS_PER_LONG == 32 5225 tmpdiv = first_block; 5226 (void) do_div(tmpdiv, blocks_per_row); 5227 first_row = tmpdiv; 5228 tmpdiv = last_block; 5229 (void) do_div(tmpdiv, blocks_per_row); 5230 last_row = tmpdiv; 5231 first_row_offset = (u32) (first_block - (first_row * blocks_per_row)); 5232 last_row_offset = (u32) (last_block - (last_row * blocks_per_row)); 5233 tmpdiv = first_row_offset; 5234 (void) do_div(tmpdiv, strip_size); 5235 first_column = tmpdiv; 5236 tmpdiv = last_row_offset; 5237 (void) do_div(tmpdiv, strip_size); 5238 last_column = tmpdiv; 5239 #else 5240 first_row = first_block / blocks_per_row; 5241 last_row = last_block / blocks_per_row; 5242 first_row_offset = (u32) (first_block - (first_row * blocks_per_row)); 5243 last_row_offset = (u32) (last_block - (last_row * blocks_per_row)); 5244 first_column = first_row_offset / strip_size; 5245 last_column = last_row_offset / strip_size; 5246 #endif 5247 5248 /* if this isn't a single row/column then give to the controller */ 5249 if ((first_row != last_row) || (first_column != last_column)) 5250 return IO_ACCEL_INELIGIBLE; 5251 5252 /* proceeding with driver mapping */ 5253 total_disks_per_row = le16_to_cpu(map->data_disks_per_row) + 5254 le16_to_cpu(map->metadata_disks_per_row); 5255 map_row = ((u32)(first_row >> map->parity_rotation_shift)) % 5256 le16_to_cpu(map->row_cnt); 5257 map_index = (map_row * total_disks_per_row) + first_column; 5258 5259 switch (dev->raid_level) { 5260 case HPSA_RAID_0: 5261 break; /* nothing special to do */ 5262 case HPSA_RAID_1: 5263 /* Handles load balance across RAID 1 members. 5264 * (2-drive R1 and R10 with even # of drives.) 5265 * Appropriate for SSDs, not optimal for HDDs 5266 * Ensure we have the correct raid_map. 5267 */ 5268 if (le16_to_cpu(map->layout_map_count) != 2) { 5269 hpsa_turn_off_ioaccel_for_device(dev); 5270 return IO_ACCEL_INELIGIBLE; 5271 } 5272 if (dev->offload_to_mirror) 5273 map_index += le16_to_cpu(map->data_disks_per_row); 5274 dev->offload_to_mirror = !dev->offload_to_mirror; 5275 break; 5276 case HPSA_RAID_ADM: 5277 /* Handles N-way mirrors (R1-ADM) 5278 * and R10 with # of drives divisible by 3.) 5279 * Ensure we have the correct raid_map. 5280 */ 5281 if (le16_to_cpu(map->layout_map_count) != 3) { 5282 hpsa_turn_off_ioaccel_for_device(dev); 5283 return IO_ACCEL_INELIGIBLE; 5284 } 5285 5286 offload_to_mirror = dev->offload_to_mirror; 5287 raid_map_helper(map, offload_to_mirror, 5288 &map_index, ¤t_group); 5289 /* set mirror group to use next time */ 5290 offload_to_mirror = 5291 (offload_to_mirror >= 5292 le16_to_cpu(map->layout_map_count) - 1) 5293 ? 0 : offload_to_mirror + 1; 5294 dev->offload_to_mirror = offload_to_mirror; 5295 /* Avoid direct use of dev->offload_to_mirror within this 5296 * function since multiple threads might simultaneously 5297 * increment it beyond the range of dev->layout_map_count -1. 5298 */ 5299 break; 5300 case HPSA_RAID_5: 5301 case HPSA_RAID_6: 5302 if (le16_to_cpu(map->layout_map_count) <= 1) 5303 break; 5304 5305 /* Verify first and last block are in same RAID group */ 5306 r5or6_blocks_per_row = 5307 le16_to_cpu(map->strip_size) * 5308 le16_to_cpu(map->data_disks_per_row); 5309 if (r5or6_blocks_per_row == 0) { 5310 hpsa_turn_off_ioaccel_for_device(dev); 5311 return IO_ACCEL_INELIGIBLE; 5312 } 5313 stripesize = r5or6_blocks_per_row * 5314 le16_to_cpu(map->layout_map_count); 5315 #if BITS_PER_LONG == 32 5316 tmpdiv = first_block; 5317 first_group = do_div(tmpdiv, stripesize); 5318 tmpdiv = first_group; 5319 (void) do_div(tmpdiv, r5or6_blocks_per_row); 5320 first_group = tmpdiv; 5321 tmpdiv = last_block; 5322 last_group = do_div(tmpdiv, stripesize); 5323 tmpdiv = last_group; 5324 (void) do_div(tmpdiv, r5or6_blocks_per_row); 5325 last_group = tmpdiv; 5326 #else 5327 first_group = (first_block % stripesize) / r5or6_blocks_per_row; 5328 last_group = (last_block % stripesize) / r5or6_blocks_per_row; 5329 #endif 5330 if (first_group != last_group) 5331 return IO_ACCEL_INELIGIBLE; 5332 5333 /* Verify request is in a single row of RAID 5/6 */ 5334 #if BITS_PER_LONG == 32 5335 tmpdiv = first_block; 5336 (void) do_div(tmpdiv, stripesize); 5337 first_row = r5or6_first_row = r0_first_row = tmpdiv; 5338 tmpdiv = last_block; 5339 (void) do_div(tmpdiv, stripesize); 5340 r5or6_last_row = r0_last_row = tmpdiv; 5341 #else 5342 first_row = r5or6_first_row = r0_first_row = 5343 first_block / stripesize; 5344 r5or6_last_row = r0_last_row = last_block / stripesize; 5345 #endif 5346 if (r5or6_first_row != r5or6_last_row) 5347 return IO_ACCEL_INELIGIBLE; 5348 5349 5350 /* Verify request is in a single column */ 5351 #if BITS_PER_LONG == 32 5352 tmpdiv = first_block; 5353 first_row_offset = do_div(tmpdiv, stripesize); 5354 tmpdiv = first_row_offset; 5355 first_row_offset = (u32) do_div(tmpdiv, r5or6_blocks_per_row); 5356 r5or6_first_row_offset = first_row_offset; 5357 tmpdiv = last_block; 5358 r5or6_last_row_offset = do_div(tmpdiv, stripesize); 5359 tmpdiv = r5or6_last_row_offset; 5360 r5or6_last_row_offset = do_div(tmpdiv, r5or6_blocks_per_row); 5361 tmpdiv = r5or6_first_row_offset; 5362 (void) do_div(tmpdiv, map->strip_size); 5363 first_column = r5or6_first_column = tmpdiv; 5364 tmpdiv = r5or6_last_row_offset; 5365 (void) do_div(tmpdiv, map->strip_size); 5366 r5or6_last_column = tmpdiv; 5367 #else 5368 first_row_offset = r5or6_first_row_offset = 5369 (u32)((first_block % stripesize) % 5370 r5or6_blocks_per_row); 5371 5372 r5or6_last_row_offset = 5373 (u32)((last_block % stripesize) % 5374 r5or6_blocks_per_row); 5375 5376 first_column = r5or6_first_column = 5377 r5or6_first_row_offset / le16_to_cpu(map->strip_size); 5378 r5or6_last_column = 5379 r5or6_last_row_offset / le16_to_cpu(map->strip_size); 5380 #endif 5381 if (r5or6_first_column != r5or6_last_column) 5382 return IO_ACCEL_INELIGIBLE; 5383 5384 /* Request is eligible */ 5385 map_row = ((u32)(first_row >> map->parity_rotation_shift)) % 5386 le16_to_cpu(map->row_cnt); 5387 5388 map_index = (first_group * 5389 (le16_to_cpu(map->row_cnt) * total_disks_per_row)) + 5390 (map_row * total_disks_per_row) + first_column; 5391 break; 5392 default: 5393 return IO_ACCEL_INELIGIBLE; 5394 } 5395 5396 if (unlikely(map_index >= RAID_MAP_MAX_ENTRIES)) 5397 return IO_ACCEL_INELIGIBLE; 5398 5399 c->phys_disk = dev->phys_disk[map_index]; 5400 if (!c->phys_disk) 5401 return IO_ACCEL_INELIGIBLE; 5402 5403 disk_handle = dd[map_index].ioaccel_handle; 5404 disk_block = le64_to_cpu(map->disk_starting_blk) + 5405 first_row * le16_to_cpu(map->strip_size) + 5406 (first_row_offset - first_column * 5407 le16_to_cpu(map->strip_size)); 5408 disk_block_cnt = block_cnt; 5409 5410 /* handle differing logical/physical block sizes */ 5411 if (map->phys_blk_shift) { 5412 disk_block <<= map->phys_blk_shift; 5413 disk_block_cnt <<= map->phys_blk_shift; 5414 } 5415 BUG_ON(disk_block_cnt > 0xffff); 5416 5417 /* build the new CDB for the physical disk I/O */ 5418 if (disk_block > 0xffffffff) { 5419 cdb[0] = is_write ? WRITE_16 : READ_16; 5420 cdb[1] = 0; 5421 cdb[2] = (u8) (disk_block >> 56); 5422 cdb[3] = (u8) (disk_block >> 48); 5423 cdb[4] = (u8) (disk_block >> 40); 5424 cdb[5] = (u8) (disk_block >> 32); 5425 cdb[6] = (u8) (disk_block >> 24); 5426 cdb[7] = (u8) (disk_block >> 16); 5427 cdb[8] = (u8) (disk_block >> 8); 5428 cdb[9] = (u8) (disk_block); 5429 cdb[10] = (u8) (disk_block_cnt >> 24); 5430 cdb[11] = (u8) (disk_block_cnt >> 16); 5431 cdb[12] = (u8) (disk_block_cnt >> 8); 5432 cdb[13] = (u8) (disk_block_cnt); 5433 cdb[14] = 0; 5434 cdb[15] = 0; 5435 cdb_len = 16; 5436 } else { 5437 cdb[0] = is_write ? WRITE_10 : READ_10; 5438 cdb[1] = 0; 5439 cdb[2] = (u8) (disk_block >> 24); 5440 cdb[3] = (u8) (disk_block >> 16); 5441 cdb[4] = (u8) (disk_block >> 8); 5442 cdb[5] = (u8) (disk_block); 5443 cdb[6] = 0; 5444 cdb[7] = (u8) (disk_block_cnt >> 8); 5445 cdb[8] = (u8) (disk_block_cnt); 5446 cdb[9] = 0; 5447 cdb_len = 10; 5448 } 5449 return hpsa_scsi_ioaccel_queue_command(h, c, disk_handle, cdb, cdb_len, 5450 dev->scsi3addr, 5451 dev->phys_disk[map_index]); 5452 } 5453 5454 /* 5455 * Submit commands down the "normal" RAID stack path 5456 * All callers to hpsa_ciss_submit must check lockup_detected 5457 * beforehand, before (opt.) and after calling cmd_alloc 5458 */ 5459 static int hpsa_ciss_submit(struct ctlr_info *h, 5460 struct CommandList *c, struct scsi_cmnd *cmd, 5461 struct hpsa_scsi_dev_t *dev) 5462 { 5463 cmd->host_scribble = (unsigned char *) c; 5464 c->cmd_type = CMD_SCSI; 5465 c->scsi_cmd = cmd; 5466 c->Header.ReplyQueue = 0; /* unused in simple mode */ 5467 memcpy(&c->Header.LUN.LunAddrBytes[0], &dev->scsi3addr[0], 8); 5468 c->Header.tag = cpu_to_le64((c->cmdindex << DIRECT_LOOKUP_SHIFT)); 5469 5470 /* Fill in the request block... */ 5471 5472 c->Request.Timeout = 0; 5473 BUG_ON(cmd->cmd_len > sizeof(c->Request.CDB)); 5474 c->Request.CDBLen = cmd->cmd_len; 5475 memcpy(c->Request.CDB, cmd->cmnd, cmd->cmd_len); 5476 switch (cmd->sc_data_direction) { 5477 case DMA_TO_DEVICE: 5478 c->Request.type_attr_dir = 5479 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_WRITE); 5480 break; 5481 case DMA_FROM_DEVICE: 5482 c->Request.type_attr_dir = 5483 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_READ); 5484 break; 5485 case DMA_NONE: 5486 c->Request.type_attr_dir = 5487 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_NONE); 5488 break; 5489 case DMA_BIDIRECTIONAL: 5490 /* This can happen if a buggy application does a scsi passthru 5491 * and sets both inlen and outlen to non-zero. ( see 5492 * ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() ) 5493 */ 5494 5495 c->Request.type_attr_dir = 5496 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_RSVD); 5497 /* This is technically wrong, and hpsa controllers should 5498 * reject it with CMD_INVALID, which is the most correct 5499 * response, but non-fibre backends appear to let it 5500 * slide by, and give the same results as if this field 5501 * were set correctly. Either way is acceptable for 5502 * our purposes here. 5503 */ 5504 5505 break; 5506 5507 default: 5508 dev_err(&h->pdev->dev, "unknown data direction: %d\n", 5509 cmd->sc_data_direction); 5510 BUG(); 5511 break; 5512 } 5513 5514 if (hpsa_scatter_gather(h, c, cmd) < 0) { /* Fill SG list */ 5515 hpsa_cmd_resolve_and_free(h, c); 5516 return SCSI_MLQUEUE_HOST_BUSY; 5517 } 5518 5519 if (dev->in_reset) { 5520 hpsa_cmd_resolve_and_free(h, c); 5521 return SCSI_MLQUEUE_HOST_BUSY; 5522 } 5523 5524 c->device = dev; 5525 5526 enqueue_cmd_and_start_io(h, c); 5527 /* the cmd'll come back via intr handler in complete_scsi_command() */ 5528 return 0; 5529 } 5530 5531 static void hpsa_cmd_init(struct ctlr_info *h, int index, 5532 struct CommandList *c) 5533 { 5534 dma_addr_t cmd_dma_handle, err_dma_handle; 5535 5536 /* Zero out all of commandlist except the last field, refcount */ 5537 memset(c, 0, offsetof(struct CommandList, refcount)); 5538 c->Header.tag = cpu_to_le64((u64) (index << DIRECT_LOOKUP_SHIFT)); 5539 cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c); 5540 c->err_info = h->errinfo_pool + index; 5541 memset(c->err_info, 0, sizeof(*c->err_info)); 5542 err_dma_handle = h->errinfo_pool_dhandle 5543 + index * sizeof(*c->err_info); 5544 c->cmdindex = index; 5545 c->busaddr = (u32) cmd_dma_handle; 5546 c->ErrDesc.Addr = cpu_to_le64((u64) err_dma_handle); 5547 c->ErrDesc.Len = cpu_to_le32((u32) sizeof(*c->err_info)); 5548 c->h = h; 5549 c->scsi_cmd = SCSI_CMD_IDLE; 5550 } 5551 5552 static void hpsa_preinitialize_commands(struct ctlr_info *h) 5553 { 5554 int i; 5555 5556 for (i = 0; i < h->nr_cmds; i++) { 5557 struct CommandList *c = h->cmd_pool + i; 5558 5559 hpsa_cmd_init(h, i, c); 5560 atomic_set(&c->refcount, 0); 5561 } 5562 } 5563 5564 static inline void hpsa_cmd_partial_init(struct ctlr_info *h, int index, 5565 struct CommandList *c) 5566 { 5567 dma_addr_t cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c); 5568 5569 BUG_ON(c->cmdindex != index); 5570 5571 memset(c->Request.CDB, 0, sizeof(c->Request.CDB)); 5572 memset(c->err_info, 0, sizeof(*c->err_info)); 5573 c->busaddr = (u32) cmd_dma_handle; 5574 } 5575 5576 static int hpsa_ioaccel_submit(struct ctlr_info *h, 5577 struct CommandList *c, struct scsi_cmnd *cmd) 5578 { 5579 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata; 5580 int rc = IO_ACCEL_INELIGIBLE; 5581 5582 if (!dev) 5583 return SCSI_MLQUEUE_HOST_BUSY; 5584 5585 if (dev->in_reset) 5586 return SCSI_MLQUEUE_HOST_BUSY; 5587 5588 if (hpsa_simple_mode) 5589 return IO_ACCEL_INELIGIBLE; 5590 5591 cmd->host_scribble = (unsigned char *) c; 5592 5593 if (dev->offload_enabled) { 5594 hpsa_cmd_init(h, c->cmdindex, c); 5595 c->cmd_type = CMD_SCSI; 5596 c->scsi_cmd = cmd; 5597 c->device = dev; 5598 rc = hpsa_scsi_ioaccel_raid_map(h, c); 5599 if (rc < 0) /* scsi_dma_map failed. */ 5600 rc = SCSI_MLQUEUE_HOST_BUSY; 5601 } else if (dev->hba_ioaccel_enabled) { 5602 hpsa_cmd_init(h, c->cmdindex, c); 5603 c->cmd_type = CMD_SCSI; 5604 c->scsi_cmd = cmd; 5605 c->device = dev; 5606 rc = hpsa_scsi_ioaccel_direct_map(h, c); 5607 if (rc < 0) /* scsi_dma_map failed. */ 5608 rc = SCSI_MLQUEUE_HOST_BUSY; 5609 } 5610 return rc; 5611 } 5612 5613 static void hpsa_command_resubmit_worker(struct work_struct *work) 5614 { 5615 struct scsi_cmnd *cmd; 5616 struct hpsa_scsi_dev_t *dev; 5617 struct CommandList *c = container_of(work, struct CommandList, work); 5618 5619 cmd = c->scsi_cmd; 5620 dev = cmd->device->hostdata; 5621 if (!dev) { 5622 cmd->result = DID_NO_CONNECT << 16; 5623 return hpsa_cmd_free_and_done(c->h, c, cmd); 5624 } 5625 5626 if (dev->in_reset) { 5627 cmd->result = DID_RESET << 16; 5628 return hpsa_cmd_free_and_done(c->h, c, cmd); 5629 } 5630 5631 if (c->cmd_type == CMD_IOACCEL2) { 5632 struct ctlr_info *h = c->h; 5633 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex]; 5634 int rc; 5635 5636 if (c2->error_data.serv_response == 5637 IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL) { 5638 rc = hpsa_ioaccel_submit(h, c, cmd); 5639 if (rc == 0) 5640 return; 5641 if (rc == SCSI_MLQUEUE_HOST_BUSY) { 5642 /* 5643 * If we get here, it means dma mapping failed. 5644 * Try again via scsi mid layer, which will 5645 * then get SCSI_MLQUEUE_HOST_BUSY. 5646 */ 5647 cmd->result = DID_IMM_RETRY << 16; 5648 return hpsa_cmd_free_and_done(h, c, cmd); 5649 } 5650 /* else, fall thru and resubmit down CISS path */ 5651 } 5652 } 5653 hpsa_cmd_partial_init(c->h, c->cmdindex, c); 5654 if (hpsa_ciss_submit(c->h, c, cmd, dev)) { 5655 /* 5656 * If we get here, it means dma mapping failed. Try 5657 * again via scsi mid layer, which will then get 5658 * SCSI_MLQUEUE_HOST_BUSY. 5659 * 5660 * hpsa_ciss_submit will have already freed c 5661 * if it encountered a dma mapping failure. 5662 */ 5663 cmd->result = DID_IMM_RETRY << 16; 5664 cmd->scsi_done(cmd); 5665 } 5666 } 5667 5668 /* Running in struct Scsi_Host->host_lock less mode */ 5669 static int hpsa_scsi_queue_command(struct Scsi_Host *sh, struct scsi_cmnd *cmd) 5670 { 5671 struct ctlr_info *h; 5672 struct hpsa_scsi_dev_t *dev; 5673 struct CommandList *c; 5674 int rc = 0; 5675 5676 /* Get the ptr to our adapter structure out of cmd->host. */ 5677 h = sdev_to_hba(cmd->device); 5678 5679 BUG_ON(cmd->request->tag < 0); 5680 5681 dev = cmd->device->hostdata; 5682 if (!dev) { 5683 cmd->result = DID_NO_CONNECT << 16; 5684 cmd->scsi_done(cmd); 5685 return 0; 5686 } 5687 5688 if (dev->removed) { 5689 cmd->result = DID_NO_CONNECT << 16; 5690 cmd->scsi_done(cmd); 5691 return 0; 5692 } 5693 5694 if (unlikely(lockup_detected(h))) { 5695 cmd->result = DID_NO_CONNECT << 16; 5696 cmd->scsi_done(cmd); 5697 return 0; 5698 } 5699 5700 if (dev->in_reset) 5701 return SCSI_MLQUEUE_DEVICE_BUSY; 5702 5703 c = cmd_tagged_alloc(h, cmd); 5704 if (c == NULL) 5705 return SCSI_MLQUEUE_DEVICE_BUSY; 5706 5707 /* 5708 * This is necessary because the SML doesn't zero out this field during 5709 * error recovery. 5710 */ 5711 cmd->result = 0; 5712 5713 /* 5714 * Call alternate submit routine for I/O accelerated commands. 5715 * Retries always go down the normal I/O path. 5716 */ 5717 if (likely(cmd->retries == 0 && 5718 !blk_rq_is_passthrough(cmd->request) && 5719 h->acciopath_status)) { 5720 rc = hpsa_ioaccel_submit(h, c, cmd); 5721 if (rc == 0) 5722 return 0; 5723 if (rc == SCSI_MLQUEUE_HOST_BUSY) { 5724 hpsa_cmd_resolve_and_free(h, c); 5725 return SCSI_MLQUEUE_HOST_BUSY; 5726 } 5727 } 5728 return hpsa_ciss_submit(h, c, cmd, dev); 5729 } 5730 5731 static void hpsa_scan_complete(struct ctlr_info *h) 5732 { 5733 unsigned long flags; 5734 5735 spin_lock_irqsave(&h->scan_lock, flags); 5736 h->scan_finished = 1; 5737 wake_up(&h->scan_wait_queue); 5738 spin_unlock_irqrestore(&h->scan_lock, flags); 5739 } 5740 5741 static void hpsa_scan_start(struct Scsi_Host *sh) 5742 { 5743 struct ctlr_info *h = shost_to_hba(sh); 5744 unsigned long flags; 5745 5746 /* 5747 * Don't let rescans be initiated on a controller known to be locked 5748 * up. If the controller locks up *during* a rescan, that thread is 5749 * probably hosed, but at least we can prevent new rescan threads from 5750 * piling up on a locked up controller. 5751 */ 5752 if (unlikely(lockup_detected(h))) 5753 return hpsa_scan_complete(h); 5754 5755 /* 5756 * If a scan is already waiting to run, no need to add another 5757 */ 5758 spin_lock_irqsave(&h->scan_lock, flags); 5759 if (h->scan_waiting) { 5760 spin_unlock_irqrestore(&h->scan_lock, flags); 5761 return; 5762 } 5763 5764 spin_unlock_irqrestore(&h->scan_lock, flags); 5765 5766 /* wait until any scan already in progress is finished. */ 5767 while (1) { 5768 spin_lock_irqsave(&h->scan_lock, flags); 5769 if (h->scan_finished) 5770 break; 5771 h->scan_waiting = 1; 5772 spin_unlock_irqrestore(&h->scan_lock, flags); 5773 wait_event(h->scan_wait_queue, h->scan_finished); 5774 /* Note: We don't need to worry about a race between this 5775 * thread and driver unload because the midlayer will 5776 * have incremented the reference count, so unload won't 5777 * happen if we're in here. 5778 */ 5779 } 5780 h->scan_finished = 0; /* mark scan as in progress */ 5781 h->scan_waiting = 0; 5782 spin_unlock_irqrestore(&h->scan_lock, flags); 5783 5784 if (unlikely(lockup_detected(h))) 5785 return hpsa_scan_complete(h); 5786 5787 /* 5788 * Do the scan after a reset completion 5789 */ 5790 spin_lock_irqsave(&h->reset_lock, flags); 5791 if (h->reset_in_progress) { 5792 h->drv_req_rescan = 1; 5793 spin_unlock_irqrestore(&h->reset_lock, flags); 5794 hpsa_scan_complete(h); 5795 return; 5796 } 5797 spin_unlock_irqrestore(&h->reset_lock, flags); 5798 5799 hpsa_update_scsi_devices(h); 5800 5801 hpsa_scan_complete(h); 5802 } 5803 5804 static int hpsa_change_queue_depth(struct scsi_device *sdev, int qdepth) 5805 { 5806 struct hpsa_scsi_dev_t *logical_drive = sdev->hostdata; 5807 5808 if (!logical_drive) 5809 return -ENODEV; 5810 5811 if (qdepth < 1) 5812 qdepth = 1; 5813 else if (qdepth > logical_drive->queue_depth) 5814 qdepth = logical_drive->queue_depth; 5815 5816 return scsi_change_queue_depth(sdev, qdepth); 5817 } 5818 5819 static int hpsa_scan_finished(struct Scsi_Host *sh, 5820 unsigned long elapsed_time) 5821 { 5822 struct ctlr_info *h = shost_to_hba(sh); 5823 unsigned long flags; 5824 int finished; 5825 5826 spin_lock_irqsave(&h->scan_lock, flags); 5827 finished = h->scan_finished; 5828 spin_unlock_irqrestore(&h->scan_lock, flags); 5829 return finished; 5830 } 5831 5832 static int hpsa_scsi_host_alloc(struct ctlr_info *h) 5833 { 5834 struct Scsi_Host *sh; 5835 5836 sh = scsi_host_alloc(&hpsa_driver_template, sizeof(h)); 5837 if (sh == NULL) { 5838 dev_err(&h->pdev->dev, "scsi_host_alloc failed\n"); 5839 return -ENOMEM; 5840 } 5841 5842 sh->io_port = 0; 5843 sh->n_io_port = 0; 5844 sh->this_id = -1; 5845 sh->max_channel = 3; 5846 sh->max_cmd_len = MAX_COMMAND_SIZE; 5847 sh->max_lun = HPSA_MAX_LUN; 5848 sh->max_id = HPSA_MAX_LUN; 5849 sh->can_queue = h->nr_cmds - HPSA_NRESERVED_CMDS; 5850 sh->cmd_per_lun = sh->can_queue; 5851 sh->sg_tablesize = h->maxsgentries; 5852 sh->transportt = hpsa_sas_transport_template; 5853 sh->hostdata[0] = (unsigned long) h; 5854 sh->irq = pci_irq_vector(h->pdev, 0); 5855 sh->unique_id = sh->irq; 5856 5857 h->scsi_host = sh; 5858 return 0; 5859 } 5860 5861 static int hpsa_scsi_add_host(struct ctlr_info *h) 5862 { 5863 int rv; 5864 5865 rv = scsi_add_host(h->scsi_host, &h->pdev->dev); 5866 if (rv) { 5867 dev_err(&h->pdev->dev, "scsi_add_host failed\n"); 5868 return rv; 5869 } 5870 scsi_scan_host(h->scsi_host); 5871 return 0; 5872 } 5873 5874 /* 5875 * The block layer has already gone to the trouble of picking out a unique, 5876 * small-integer tag for this request. We use an offset from that value as 5877 * an index to select our command block. (The offset allows us to reserve the 5878 * low-numbered entries for our own uses.) 5879 */ 5880 static int hpsa_get_cmd_index(struct scsi_cmnd *scmd) 5881 { 5882 int idx = scmd->request->tag; 5883 5884 if (idx < 0) 5885 return idx; 5886 5887 /* Offset to leave space for internal cmds. */ 5888 return idx += HPSA_NRESERVED_CMDS; 5889 } 5890 5891 /* 5892 * Send a TEST_UNIT_READY command to the specified LUN using the specified 5893 * reply queue; returns zero if the unit is ready, and non-zero otherwise. 5894 */ 5895 static int hpsa_send_test_unit_ready(struct ctlr_info *h, 5896 struct CommandList *c, unsigned char lunaddr[], 5897 int reply_queue) 5898 { 5899 int rc; 5900 5901 /* Send the Test Unit Ready, fill_cmd can't fail, no mapping */ 5902 (void) fill_cmd(c, TEST_UNIT_READY, h, 5903 NULL, 0, 0, lunaddr, TYPE_CMD); 5904 rc = hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT); 5905 if (rc) 5906 return rc; 5907 /* no unmap needed here because no data xfer. */ 5908 5909 /* Check if the unit is already ready. */ 5910 if (c->err_info->CommandStatus == CMD_SUCCESS) 5911 return 0; 5912 5913 /* 5914 * The first command sent after reset will receive "unit attention" to 5915 * indicate that the LUN has been reset...this is actually what we're 5916 * looking for (but, success is good too). 5917 */ 5918 if (c->err_info->CommandStatus == CMD_TARGET_STATUS && 5919 c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION && 5920 (c->err_info->SenseInfo[2] == NO_SENSE || 5921 c->err_info->SenseInfo[2] == UNIT_ATTENTION)) 5922 return 0; 5923 5924 return 1; 5925 } 5926 5927 /* 5928 * Wait for a TEST_UNIT_READY command to complete, retrying as necessary; 5929 * returns zero when the unit is ready, and non-zero when giving up. 5930 */ 5931 static int hpsa_wait_for_test_unit_ready(struct ctlr_info *h, 5932 struct CommandList *c, 5933 unsigned char lunaddr[], int reply_queue) 5934 { 5935 int rc; 5936 int count = 0; 5937 int waittime = 1; /* seconds */ 5938 5939 /* Send test unit ready until device ready, or give up. */ 5940 for (count = 0; count < HPSA_TUR_RETRY_LIMIT; count++) { 5941 5942 /* 5943 * Wait for a bit. do this first, because if we send 5944 * the TUR right away, the reset will just abort it. 5945 */ 5946 msleep(1000 * waittime); 5947 5948 rc = hpsa_send_test_unit_ready(h, c, lunaddr, reply_queue); 5949 if (!rc) 5950 break; 5951 5952 /* Increase wait time with each try, up to a point. */ 5953 if (waittime < HPSA_MAX_WAIT_INTERVAL_SECS) 5954 waittime *= 2; 5955 5956 dev_warn(&h->pdev->dev, 5957 "waiting %d secs for device to become ready.\n", 5958 waittime); 5959 } 5960 5961 return rc; 5962 } 5963 5964 static int wait_for_device_to_become_ready(struct ctlr_info *h, 5965 unsigned char lunaddr[], 5966 int reply_queue) 5967 { 5968 int first_queue; 5969 int last_queue; 5970 int rq; 5971 int rc = 0; 5972 struct CommandList *c; 5973 5974 c = cmd_alloc(h); 5975 5976 /* 5977 * If no specific reply queue was requested, then send the TUR 5978 * repeatedly, requesting a reply on each reply queue; otherwise execute 5979 * the loop exactly once using only the specified queue. 5980 */ 5981 if (reply_queue == DEFAULT_REPLY_QUEUE) { 5982 first_queue = 0; 5983 last_queue = h->nreply_queues - 1; 5984 } else { 5985 first_queue = reply_queue; 5986 last_queue = reply_queue; 5987 } 5988 5989 for (rq = first_queue; rq <= last_queue; rq++) { 5990 rc = hpsa_wait_for_test_unit_ready(h, c, lunaddr, rq); 5991 if (rc) 5992 break; 5993 } 5994 5995 if (rc) 5996 dev_warn(&h->pdev->dev, "giving up on device.\n"); 5997 else 5998 dev_warn(&h->pdev->dev, "device is ready.\n"); 5999 6000 cmd_free(h, c); 6001 return rc; 6002 } 6003 6004 /* Need at least one of these error handlers to keep ../scsi/hosts.c from 6005 * complaining. Doing a host- or bus-reset can't do anything good here. 6006 */ 6007 static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd) 6008 { 6009 int rc = SUCCESS; 6010 int i; 6011 struct ctlr_info *h; 6012 struct hpsa_scsi_dev_t *dev = NULL; 6013 u8 reset_type; 6014 char msg[48]; 6015 unsigned long flags; 6016 6017 /* find the controller to which the command to be aborted was sent */ 6018 h = sdev_to_hba(scsicmd->device); 6019 if (h == NULL) /* paranoia */ 6020 return FAILED; 6021 6022 spin_lock_irqsave(&h->reset_lock, flags); 6023 h->reset_in_progress = 1; 6024 spin_unlock_irqrestore(&h->reset_lock, flags); 6025 6026 if (lockup_detected(h)) { 6027 rc = FAILED; 6028 goto return_reset_status; 6029 } 6030 6031 dev = scsicmd->device->hostdata; 6032 if (!dev) { 6033 dev_err(&h->pdev->dev, "%s: device lookup failed\n", __func__); 6034 rc = FAILED; 6035 goto return_reset_status; 6036 } 6037 6038 if (dev->devtype == TYPE_ENCLOSURE) { 6039 rc = SUCCESS; 6040 goto return_reset_status; 6041 } 6042 6043 /* if controller locked up, we can guarantee command won't complete */ 6044 if (lockup_detected(h)) { 6045 snprintf(msg, sizeof(msg), 6046 "cmd %d RESET FAILED, lockup detected", 6047 hpsa_get_cmd_index(scsicmd)); 6048 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg); 6049 rc = FAILED; 6050 goto return_reset_status; 6051 } 6052 6053 /* this reset request might be the result of a lockup; check */ 6054 if (detect_controller_lockup(h)) { 6055 snprintf(msg, sizeof(msg), 6056 "cmd %d RESET FAILED, new lockup detected", 6057 hpsa_get_cmd_index(scsicmd)); 6058 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg); 6059 rc = FAILED; 6060 goto return_reset_status; 6061 } 6062 6063 /* Do not attempt on controller */ 6064 if (is_hba_lunid(dev->scsi3addr)) { 6065 rc = SUCCESS; 6066 goto return_reset_status; 6067 } 6068 6069 if (is_logical_dev_addr_mode(dev->scsi3addr)) 6070 reset_type = HPSA_DEVICE_RESET_MSG; 6071 else 6072 reset_type = HPSA_PHYS_TARGET_RESET; 6073 6074 sprintf(msg, "resetting %s", 6075 reset_type == HPSA_DEVICE_RESET_MSG ? "logical " : "physical "); 6076 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg); 6077 6078 /* 6079 * wait to see if any commands will complete before sending reset 6080 */ 6081 dev->in_reset = true; /* block any new cmds from OS for this device */ 6082 for (i = 0; i < 10; i++) { 6083 if (atomic_read(&dev->commands_outstanding) > 0) 6084 msleep(1000); 6085 else 6086 break; 6087 } 6088 6089 /* send a reset to the SCSI LUN which the command was sent to */ 6090 rc = hpsa_do_reset(h, dev, reset_type, DEFAULT_REPLY_QUEUE); 6091 if (rc == 0) 6092 rc = SUCCESS; 6093 else 6094 rc = FAILED; 6095 6096 sprintf(msg, "reset %s %s", 6097 reset_type == HPSA_DEVICE_RESET_MSG ? "logical " : "physical ", 6098 rc == SUCCESS ? "completed successfully" : "failed"); 6099 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg); 6100 6101 return_reset_status: 6102 spin_lock_irqsave(&h->reset_lock, flags); 6103 h->reset_in_progress = 0; 6104 if (dev) 6105 dev->in_reset = false; 6106 spin_unlock_irqrestore(&h->reset_lock, flags); 6107 return rc; 6108 } 6109 6110 /* 6111 * For operations with an associated SCSI command, a command block is allocated 6112 * at init, and managed by cmd_tagged_alloc() and cmd_tagged_free() using the 6113 * block request tag as an index into a table of entries. cmd_tagged_free() is 6114 * the complement, although cmd_free() may be called instead. 6115 */ 6116 static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h, 6117 struct scsi_cmnd *scmd) 6118 { 6119 int idx = hpsa_get_cmd_index(scmd); 6120 struct CommandList *c = h->cmd_pool + idx; 6121 6122 if (idx < HPSA_NRESERVED_CMDS || idx >= h->nr_cmds) { 6123 dev_err(&h->pdev->dev, "Bad block tag: %d not in [%d..%d]\n", 6124 idx, HPSA_NRESERVED_CMDS, h->nr_cmds - 1); 6125 /* The index value comes from the block layer, so if it's out of 6126 * bounds, it's probably not our bug. 6127 */ 6128 BUG(); 6129 } 6130 6131 if (unlikely(!hpsa_is_cmd_idle(c))) { 6132 /* 6133 * We expect that the SCSI layer will hand us a unique tag 6134 * value. Thus, there should never be a collision here between 6135 * two requests...because if the selected command isn't idle 6136 * then someone is going to be very disappointed. 6137 */ 6138 if (idx != h->last_collision_tag) { /* Print once per tag */ 6139 dev_warn(&h->pdev->dev, 6140 "%s: tag collision (tag=%d)\n", __func__, idx); 6141 if (scmd) 6142 scsi_print_command(scmd); 6143 h->last_collision_tag = idx; 6144 } 6145 return NULL; 6146 } 6147 6148 atomic_inc(&c->refcount); 6149 6150 hpsa_cmd_partial_init(h, idx, c); 6151 return c; 6152 } 6153 6154 static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c) 6155 { 6156 /* 6157 * Release our reference to the block. We don't need to do anything 6158 * else to free it, because it is accessed by index. 6159 */ 6160 (void)atomic_dec(&c->refcount); 6161 } 6162 6163 /* 6164 * For operations that cannot sleep, a command block is allocated at init, 6165 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track 6166 * which ones are free or in use. Lock must be held when calling this. 6167 * cmd_free() is the complement. 6168 * This function never gives up and returns NULL. If it hangs, 6169 * another thread must call cmd_free() to free some tags. 6170 */ 6171 6172 static struct CommandList *cmd_alloc(struct ctlr_info *h) 6173 { 6174 struct CommandList *c; 6175 int refcount, i; 6176 int offset = 0; 6177 6178 /* 6179 * There is some *extremely* small but non-zero chance that that 6180 * multiple threads could get in here, and one thread could 6181 * be scanning through the list of bits looking for a free 6182 * one, but the free ones are always behind him, and other 6183 * threads sneak in behind him and eat them before he can 6184 * get to them, so that while there is always a free one, a 6185 * very unlucky thread might be starved anyway, never able to 6186 * beat the other threads. In reality, this happens so 6187 * infrequently as to be indistinguishable from never. 6188 * 6189 * Note that we start allocating commands before the SCSI host structure 6190 * is initialized. Since the search starts at bit zero, this 6191 * all works, since we have at least one command structure available; 6192 * however, it means that the structures with the low indexes have to be 6193 * reserved for driver-initiated requests, while requests from the block 6194 * layer will use the higher indexes. 6195 */ 6196 6197 for (;;) { 6198 i = find_next_zero_bit(h->cmd_pool_bits, 6199 HPSA_NRESERVED_CMDS, 6200 offset); 6201 if (unlikely(i >= HPSA_NRESERVED_CMDS)) { 6202 offset = 0; 6203 continue; 6204 } 6205 c = h->cmd_pool + i; 6206 refcount = atomic_inc_return(&c->refcount); 6207 if (unlikely(refcount > 1)) { 6208 cmd_free(h, c); /* already in use */ 6209 offset = (i + 1) % HPSA_NRESERVED_CMDS; 6210 continue; 6211 } 6212 set_bit(i & (BITS_PER_LONG - 1), 6213 h->cmd_pool_bits + (i / BITS_PER_LONG)); 6214 break; /* it's ours now. */ 6215 } 6216 hpsa_cmd_partial_init(h, i, c); 6217 c->device = NULL; 6218 return c; 6219 } 6220 6221 /* 6222 * This is the complementary operation to cmd_alloc(). Note, however, in some 6223 * corner cases it may also be used to free blocks allocated by 6224 * cmd_tagged_alloc() in which case the ref-count decrement does the trick and 6225 * the clear-bit is harmless. 6226 */ 6227 static void cmd_free(struct ctlr_info *h, struct CommandList *c) 6228 { 6229 if (atomic_dec_and_test(&c->refcount)) { 6230 int i; 6231 6232 i = c - h->cmd_pool; 6233 clear_bit(i & (BITS_PER_LONG - 1), 6234 h->cmd_pool_bits + (i / BITS_PER_LONG)); 6235 } 6236 } 6237 6238 #ifdef CONFIG_COMPAT 6239 6240 static int hpsa_ioctl32_passthru(struct scsi_device *dev, unsigned int cmd, 6241 void __user *arg) 6242 { 6243 struct ctlr_info *h = sdev_to_hba(dev); 6244 IOCTL32_Command_struct __user *arg32 = arg; 6245 IOCTL_Command_struct arg64; 6246 int err; 6247 u32 cp; 6248 6249 if (!arg) 6250 return -EINVAL; 6251 6252 memset(&arg64, 0, sizeof(arg64)); 6253 if (copy_from_user(&arg64, arg32, offsetof(IOCTL_Command_struct, buf))) 6254 return -EFAULT; 6255 if (get_user(cp, &arg32->buf)) 6256 return -EFAULT; 6257 arg64.buf = compat_ptr(cp); 6258 6259 if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0) 6260 return -EAGAIN; 6261 err = hpsa_passthru_ioctl(h, &arg64); 6262 atomic_inc(&h->passthru_cmds_avail); 6263 if (err) 6264 return err; 6265 if (copy_to_user(&arg32->error_info, &arg64.error_info, 6266 sizeof(arg32->error_info))) 6267 return -EFAULT; 6268 return 0; 6269 } 6270 6271 static int hpsa_ioctl32_big_passthru(struct scsi_device *dev, 6272 unsigned int cmd, void __user *arg) 6273 { 6274 struct ctlr_info *h = sdev_to_hba(dev); 6275 BIG_IOCTL32_Command_struct __user *arg32 = arg; 6276 BIG_IOCTL_Command_struct arg64; 6277 int err; 6278 u32 cp; 6279 6280 if (!arg) 6281 return -EINVAL; 6282 memset(&arg64, 0, sizeof(arg64)); 6283 if (copy_from_user(&arg64, arg32, 6284 offsetof(BIG_IOCTL32_Command_struct, buf))) 6285 return -EFAULT; 6286 if (get_user(cp, &arg32->buf)) 6287 return -EFAULT; 6288 arg64.buf = compat_ptr(cp); 6289 6290 if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0) 6291 return -EAGAIN; 6292 err = hpsa_big_passthru_ioctl(h, &arg64); 6293 atomic_inc(&h->passthru_cmds_avail); 6294 if (err) 6295 return err; 6296 if (copy_to_user(&arg32->error_info, &arg64.error_info, 6297 sizeof(arg32->error_info))) 6298 return -EFAULT; 6299 return 0; 6300 } 6301 6302 static int hpsa_compat_ioctl(struct scsi_device *dev, unsigned int cmd, 6303 void __user *arg) 6304 { 6305 switch (cmd) { 6306 case CCISS_GETPCIINFO: 6307 case CCISS_GETINTINFO: 6308 case CCISS_SETINTINFO: 6309 case CCISS_GETNODENAME: 6310 case CCISS_SETNODENAME: 6311 case CCISS_GETHEARTBEAT: 6312 case CCISS_GETBUSTYPES: 6313 case CCISS_GETFIRMVER: 6314 case CCISS_GETDRIVVER: 6315 case CCISS_REVALIDVOLS: 6316 case CCISS_DEREGDISK: 6317 case CCISS_REGNEWDISK: 6318 case CCISS_REGNEWD: 6319 case CCISS_RESCANDISK: 6320 case CCISS_GETLUNINFO: 6321 return hpsa_ioctl(dev, cmd, arg); 6322 6323 case CCISS_PASSTHRU32: 6324 return hpsa_ioctl32_passthru(dev, cmd, arg); 6325 case CCISS_BIG_PASSTHRU32: 6326 return hpsa_ioctl32_big_passthru(dev, cmd, arg); 6327 6328 default: 6329 return -ENOIOCTLCMD; 6330 } 6331 } 6332 #endif 6333 6334 static int hpsa_getpciinfo_ioctl(struct ctlr_info *h, void __user *argp) 6335 { 6336 struct hpsa_pci_info pciinfo; 6337 6338 if (!argp) 6339 return -EINVAL; 6340 pciinfo.domain = pci_domain_nr(h->pdev->bus); 6341 pciinfo.bus = h->pdev->bus->number; 6342 pciinfo.dev_fn = h->pdev->devfn; 6343 pciinfo.board_id = h->board_id; 6344 if (copy_to_user(argp, &pciinfo, sizeof(pciinfo))) 6345 return -EFAULT; 6346 return 0; 6347 } 6348 6349 static int hpsa_getdrivver_ioctl(struct ctlr_info *h, void __user *argp) 6350 { 6351 DriverVer_type DriverVer; 6352 unsigned char vmaj, vmin, vsubmin; 6353 int rc; 6354 6355 rc = sscanf(HPSA_DRIVER_VERSION, "%hhu.%hhu.%hhu", 6356 &vmaj, &vmin, &vsubmin); 6357 if (rc != 3) { 6358 dev_info(&h->pdev->dev, "driver version string '%s' " 6359 "unrecognized.", HPSA_DRIVER_VERSION); 6360 vmaj = 0; 6361 vmin = 0; 6362 vsubmin = 0; 6363 } 6364 DriverVer = (vmaj << 16) | (vmin << 8) | vsubmin; 6365 if (!argp) 6366 return -EINVAL; 6367 if (copy_to_user(argp, &DriverVer, sizeof(DriverVer_type))) 6368 return -EFAULT; 6369 return 0; 6370 } 6371 6372 static int hpsa_passthru_ioctl(struct ctlr_info *h, 6373 IOCTL_Command_struct *iocommand) 6374 { 6375 struct CommandList *c; 6376 char *buff = NULL; 6377 u64 temp64; 6378 int rc = 0; 6379 6380 if (!capable(CAP_SYS_RAWIO)) 6381 return -EPERM; 6382 if ((iocommand->buf_size < 1) && 6383 (iocommand->Request.Type.Direction != XFER_NONE)) { 6384 return -EINVAL; 6385 } 6386 if (iocommand->buf_size > 0) { 6387 buff = kmalloc(iocommand->buf_size, GFP_KERNEL); 6388 if (buff == NULL) 6389 return -ENOMEM; 6390 if (iocommand->Request.Type.Direction & XFER_WRITE) { 6391 /* Copy the data into the buffer we created */ 6392 if (copy_from_user(buff, iocommand->buf, 6393 iocommand->buf_size)) { 6394 rc = -EFAULT; 6395 goto out_kfree; 6396 } 6397 } else { 6398 memset(buff, 0, iocommand->buf_size); 6399 } 6400 } 6401 c = cmd_alloc(h); 6402 6403 /* Fill in the command type */ 6404 c->cmd_type = CMD_IOCTL_PEND; 6405 c->scsi_cmd = SCSI_CMD_BUSY; 6406 /* Fill in Command Header */ 6407 c->Header.ReplyQueue = 0; /* unused in simple mode */ 6408 if (iocommand->buf_size > 0) { /* buffer to fill */ 6409 c->Header.SGList = 1; 6410 c->Header.SGTotal = cpu_to_le16(1); 6411 } else { /* no buffers to fill */ 6412 c->Header.SGList = 0; 6413 c->Header.SGTotal = cpu_to_le16(0); 6414 } 6415 memcpy(&c->Header.LUN, &iocommand->LUN_info, sizeof(c->Header.LUN)); 6416 6417 /* Fill in Request block */ 6418 memcpy(&c->Request, &iocommand->Request, 6419 sizeof(c->Request)); 6420 6421 /* Fill in the scatter gather information */ 6422 if (iocommand->buf_size > 0) { 6423 temp64 = dma_map_single(&h->pdev->dev, buff, 6424 iocommand->buf_size, DMA_BIDIRECTIONAL); 6425 if (dma_mapping_error(&h->pdev->dev, (dma_addr_t) temp64)) { 6426 c->SG[0].Addr = cpu_to_le64(0); 6427 c->SG[0].Len = cpu_to_le32(0); 6428 rc = -ENOMEM; 6429 goto out; 6430 } 6431 c->SG[0].Addr = cpu_to_le64(temp64); 6432 c->SG[0].Len = cpu_to_le32(iocommand->buf_size); 6433 c->SG[0].Ext = cpu_to_le32(HPSA_SG_LAST); /* not chaining */ 6434 } 6435 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, 6436 NO_TIMEOUT); 6437 if (iocommand->buf_size > 0) 6438 hpsa_pci_unmap(h->pdev, c, 1, DMA_BIDIRECTIONAL); 6439 check_ioctl_unit_attention(h, c); 6440 if (rc) { 6441 rc = -EIO; 6442 goto out; 6443 } 6444 6445 /* Copy the error information out */ 6446 memcpy(&iocommand->error_info, c->err_info, 6447 sizeof(iocommand->error_info)); 6448 if ((iocommand->Request.Type.Direction & XFER_READ) && 6449 iocommand->buf_size > 0) { 6450 /* Copy the data out of the buffer we created */ 6451 if (copy_to_user(iocommand->buf, buff, iocommand->buf_size)) { 6452 rc = -EFAULT; 6453 goto out; 6454 } 6455 } 6456 out: 6457 cmd_free(h, c); 6458 out_kfree: 6459 kfree(buff); 6460 return rc; 6461 } 6462 6463 static int hpsa_big_passthru_ioctl(struct ctlr_info *h, 6464 BIG_IOCTL_Command_struct *ioc) 6465 { 6466 struct CommandList *c; 6467 unsigned char **buff = NULL; 6468 int *buff_size = NULL; 6469 u64 temp64; 6470 BYTE sg_used = 0; 6471 int status = 0; 6472 u32 left; 6473 u32 sz; 6474 BYTE __user *data_ptr; 6475 6476 if (!capable(CAP_SYS_RAWIO)) 6477 return -EPERM; 6478 6479 if ((ioc->buf_size < 1) && 6480 (ioc->Request.Type.Direction != XFER_NONE)) 6481 return -EINVAL; 6482 /* Check kmalloc limits using all SGs */ 6483 if (ioc->malloc_size > MAX_KMALLOC_SIZE) 6484 return -EINVAL; 6485 if (ioc->buf_size > ioc->malloc_size * SG_ENTRIES_IN_CMD) 6486 return -EINVAL; 6487 buff = kcalloc(SG_ENTRIES_IN_CMD, sizeof(char *), GFP_KERNEL); 6488 if (!buff) { 6489 status = -ENOMEM; 6490 goto cleanup1; 6491 } 6492 buff_size = kmalloc_array(SG_ENTRIES_IN_CMD, sizeof(int), GFP_KERNEL); 6493 if (!buff_size) { 6494 status = -ENOMEM; 6495 goto cleanup1; 6496 } 6497 left = ioc->buf_size; 6498 data_ptr = ioc->buf; 6499 while (left) { 6500 sz = (left > ioc->malloc_size) ? ioc->malloc_size : left; 6501 buff_size[sg_used] = sz; 6502 buff[sg_used] = kmalloc(sz, GFP_KERNEL); 6503 if (buff[sg_used] == NULL) { 6504 status = -ENOMEM; 6505 goto cleanup1; 6506 } 6507 if (ioc->Request.Type.Direction & XFER_WRITE) { 6508 if (copy_from_user(buff[sg_used], data_ptr, sz)) { 6509 status = -EFAULT; 6510 goto cleanup1; 6511 } 6512 } else 6513 memset(buff[sg_used], 0, sz); 6514 left -= sz; 6515 data_ptr += sz; 6516 sg_used++; 6517 } 6518 c = cmd_alloc(h); 6519 6520 c->cmd_type = CMD_IOCTL_PEND; 6521 c->scsi_cmd = SCSI_CMD_BUSY; 6522 c->Header.ReplyQueue = 0; 6523 c->Header.SGList = (u8) sg_used; 6524 c->Header.SGTotal = cpu_to_le16(sg_used); 6525 memcpy(&c->Header.LUN, &ioc->LUN_info, sizeof(c->Header.LUN)); 6526 memcpy(&c->Request, &ioc->Request, sizeof(c->Request)); 6527 if (ioc->buf_size > 0) { 6528 int i; 6529 for (i = 0; i < sg_used; i++) { 6530 temp64 = dma_map_single(&h->pdev->dev, buff[i], 6531 buff_size[i], DMA_BIDIRECTIONAL); 6532 if (dma_mapping_error(&h->pdev->dev, 6533 (dma_addr_t) temp64)) { 6534 c->SG[i].Addr = cpu_to_le64(0); 6535 c->SG[i].Len = cpu_to_le32(0); 6536 hpsa_pci_unmap(h->pdev, c, i, 6537 DMA_BIDIRECTIONAL); 6538 status = -ENOMEM; 6539 goto cleanup0; 6540 } 6541 c->SG[i].Addr = cpu_to_le64(temp64); 6542 c->SG[i].Len = cpu_to_le32(buff_size[i]); 6543 c->SG[i].Ext = cpu_to_le32(0); 6544 } 6545 c->SG[--i].Ext = cpu_to_le32(HPSA_SG_LAST); 6546 } 6547 status = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, 6548 NO_TIMEOUT); 6549 if (sg_used) 6550 hpsa_pci_unmap(h->pdev, c, sg_used, DMA_BIDIRECTIONAL); 6551 check_ioctl_unit_attention(h, c); 6552 if (status) { 6553 status = -EIO; 6554 goto cleanup0; 6555 } 6556 6557 /* Copy the error information out */ 6558 memcpy(&ioc->error_info, c->err_info, sizeof(ioc->error_info)); 6559 if ((ioc->Request.Type.Direction & XFER_READ) && ioc->buf_size > 0) { 6560 int i; 6561 6562 /* Copy the data out of the buffer we created */ 6563 BYTE __user *ptr = ioc->buf; 6564 for (i = 0; i < sg_used; i++) { 6565 if (copy_to_user(ptr, buff[i], buff_size[i])) { 6566 status = -EFAULT; 6567 goto cleanup0; 6568 } 6569 ptr += buff_size[i]; 6570 } 6571 } 6572 status = 0; 6573 cleanup0: 6574 cmd_free(h, c); 6575 cleanup1: 6576 if (buff) { 6577 int i; 6578 6579 for (i = 0; i < sg_used; i++) 6580 kfree(buff[i]); 6581 kfree(buff); 6582 } 6583 kfree(buff_size); 6584 return status; 6585 } 6586 6587 static void check_ioctl_unit_attention(struct ctlr_info *h, 6588 struct CommandList *c) 6589 { 6590 if (c->err_info->CommandStatus == CMD_TARGET_STATUS && 6591 c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) 6592 (void) check_for_unit_attention(h, c); 6593 } 6594 6595 /* 6596 * ioctl 6597 */ 6598 static int hpsa_ioctl(struct scsi_device *dev, unsigned int cmd, 6599 void __user *argp) 6600 { 6601 struct ctlr_info *h = sdev_to_hba(dev); 6602 int rc; 6603 6604 switch (cmd) { 6605 case CCISS_DEREGDISK: 6606 case CCISS_REGNEWDISK: 6607 case CCISS_REGNEWD: 6608 hpsa_scan_start(h->scsi_host); 6609 return 0; 6610 case CCISS_GETPCIINFO: 6611 return hpsa_getpciinfo_ioctl(h, argp); 6612 case CCISS_GETDRIVVER: 6613 return hpsa_getdrivver_ioctl(h, argp); 6614 case CCISS_PASSTHRU: { 6615 IOCTL_Command_struct iocommand; 6616 6617 if (!argp) 6618 return -EINVAL; 6619 if (copy_from_user(&iocommand, argp, sizeof(iocommand))) 6620 return -EFAULT; 6621 if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0) 6622 return -EAGAIN; 6623 rc = hpsa_passthru_ioctl(h, &iocommand); 6624 atomic_inc(&h->passthru_cmds_avail); 6625 if (!rc && copy_to_user(argp, &iocommand, sizeof(iocommand))) 6626 rc = -EFAULT; 6627 return rc; 6628 } 6629 case CCISS_BIG_PASSTHRU: { 6630 BIG_IOCTL_Command_struct ioc; 6631 if (!argp) 6632 return -EINVAL; 6633 if (copy_from_user(&ioc, argp, sizeof(ioc))) 6634 return -EFAULT; 6635 if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0) 6636 return -EAGAIN; 6637 rc = hpsa_big_passthru_ioctl(h, &ioc); 6638 atomic_inc(&h->passthru_cmds_avail); 6639 if (!rc && copy_to_user(argp, &ioc, sizeof(ioc))) 6640 rc = -EFAULT; 6641 return rc; 6642 } 6643 default: 6644 return -ENOTTY; 6645 } 6646 } 6647 6648 static void hpsa_send_host_reset(struct ctlr_info *h, u8 reset_type) 6649 { 6650 struct CommandList *c; 6651 6652 c = cmd_alloc(h); 6653 6654 /* fill_cmd can't fail here, no data buffer to map */ 6655 (void) fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0, 6656 RAID_CTLR_LUNID, TYPE_MSG); 6657 c->Request.CDB[1] = reset_type; /* fill_cmd defaults to target reset */ 6658 c->waiting = NULL; 6659 enqueue_cmd_and_start_io(h, c); 6660 /* Don't wait for completion, the reset won't complete. Don't free 6661 * the command either. This is the last command we will send before 6662 * re-initializing everything, so it doesn't matter and won't leak. 6663 */ 6664 return; 6665 } 6666 6667 static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h, 6668 void *buff, size_t size, u16 page_code, unsigned char *scsi3addr, 6669 int cmd_type) 6670 { 6671 enum dma_data_direction dir = DMA_NONE; 6672 6673 c->cmd_type = CMD_IOCTL_PEND; 6674 c->scsi_cmd = SCSI_CMD_BUSY; 6675 c->Header.ReplyQueue = 0; 6676 if (buff != NULL && size > 0) { 6677 c->Header.SGList = 1; 6678 c->Header.SGTotal = cpu_to_le16(1); 6679 } else { 6680 c->Header.SGList = 0; 6681 c->Header.SGTotal = cpu_to_le16(0); 6682 } 6683 memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8); 6684 6685 if (cmd_type == TYPE_CMD) { 6686 switch (cmd) { 6687 case HPSA_INQUIRY: 6688 /* are we trying to read a vital product page */ 6689 if (page_code & VPD_PAGE) { 6690 c->Request.CDB[1] = 0x01; 6691 c->Request.CDB[2] = (page_code & 0xff); 6692 } 6693 c->Request.CDBLen = 6; 6694 c->Request.type_attr_dir = 6695 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ); 6696 c->Request.Timeout = 0; 6697 c->Request.CDB[0] = HPSA_INQUIRY; 6698 c->Request.CDB[4] = size & 0xFF; 6699 break; 6700 case RECEIVE_DIAGNOSTIC: 6701 c->Request.CDBLen = 6; 6702 c->Request.type_attr_dir = 6703 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ); 6704 c->Request.Timeout = 0; 6705 c->Request.CDB[0] = cmd; 6706 c->Request.CDB[1] = 1; 6707 c->Request.CDB[2] = 1; 6708 c->Request.CDB[3] = (size >> 8) & 0xFF; 6709 c->Request.CDB[4] = size & 0xFF; 6710 break; 6711 case HPSA_REPORT_LOG: 6712 case HPSA_REPORT_PHYS: 6713 /* Talking to controller so It's a physical command 6714 mode = 00 target = 0. Nothing to write. 6715 */ 6716 c->Request.CDBLen = 12; 6717 c->Request.type_attr_dir = 6718 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ); 6719 c->Request.Timeout = 0; 6720 c->Request.CDB[0] = cmd; 6721 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */ 6722 c->Request.CDB[7] = (size >> 16) & 0xFF; 6723 c->Request.CDB[8] = (size >> 8) & 0xFF; 6724 c->Request.CDB[9] = size & 0xFF; 6725 break; 6726 case BMIC_SENSE_DIAG_OPTIONS: 6727 c->Request.CDBLen = 16; 6728 c->Request.type_attr_dir = 6729 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ); 6730 c->Request.Timeout = 0; 6731 /* Spec says this should be BMIC_WRITE */ 6732 c->Request.CDB[0] = BMIC_READ; 6733 c->Request.CDB[6] = BMIC_SENSE_DIAG_OPTIONS; 6734 break; 6735 case BMIC_SET_DIAG_OPTIONS: 6736 c->Request.CDBLen = 16; 6737 c->Request.type_attr_dir = 6738 TYPE_ATTR_DIR(cmd_type, 6739 ATTR_SIMPLE, XFER_WRITE); 6740 c->Request.Timeout = 0; 6741 c->Request.CDB[0] = BMIC_WRITE; 6742 c->Request.CDB[6] = BMIC_SET_DIAG_OPTIONS; 6743 break; 6744 case HPSA_CACHE_FLUSH: 6745 c->Request.CDBLen = 12; 6746 c->Request.type_attr_dir = 6747 TYPE_ATTR_DIR(cmd_type, 6748 ATTR_SIMPLE, XFER_WRITE); 6749 c->Request.Timeout = 0; 6750 c->Request.CDB[0] = BMIC_WRITE; 6751 c->Request.CDB[6] = BMIC_CACHE_FLUSH; 6752 c->Request.CDB[7] = (size >> 8) & 0xFF; 6753 c->Request.CDB[8] = size & 0xFF; 6754 break; 6755 case TEST_UNIT_READY: 6756 c->Request.CDBLen = 6; 6757 c->Request.type_attr_dir = 6758 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE); 6759 c->Request.Timeout = 0; 6760 break; 6761 case HPSA_GET_RAID_MAP: 6762 c->Request.CDBLen = 12; 6763 c->Request.type_attr_dir = 6764 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ); 6765 c->Request.Timeout = 0; 6766 c->Request.CDB[0] = HPSA_CISS_READ; 6767 c->Request.CDB[1] = cmd; 6768 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */ 6769 c->Request.CDB[7] = (size >> 16) & 0xFF; 6770 c->Request.CDB[8] = (size >> 8) & 0xFF; 6771 c->Request.CDB[9] = size & 0xFF; 6772 break; 6773 case BMIC_SENSE_CONTROLLER_PARAMETERS: 6774 c->Request.CDBLen = 10; 6775 c->Request.type_attr_dir = 6776 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ); 6777 c->Request.Timeout = 0; 6778 c->Request.CDB[0] = BMIC_READ; 6779 c->Request.CDB[6] = BMIC_SENSE_CONTROLLER_PARAMETERS; 6780 c->Request.CDB[7] = (size >> 16) & 0xFF; 6781 c->Request.CDB[8] = (size >> 8) & 0xFF; 6782 break; 6783 case BMIC_IDENTIFY_PHYSICAL_DEVICE: 6784 c->Request.CDBLen = 10; 6785 c->Request.type_attr_dir = 6786 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ); 6787 c->Request.Timeout = 0; 6788 c->Request.CDB[0] = BMIC_READ; 6789 c->Request.CDB[6] = BMIC_IDENTIFY_PHYSICAL_DEVICE; 6790 c->Request.CDB[7] = (size >> 16) & 0xFF; 6791 c->Request.CDB[8] = (size >> 8) & 0XFF; 6792 break; 6793 case BMIC_SENSE_SUBSYSTEM_INFORMATION: 6794 c->Request.CDBLen = 10; 6795 c->Request.type_attr_dir = 6796 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ); 6797 c->Request.Timeout = 0; 6798 c->Request.CDB[0] = BMIC_READ; 6799 c->Request.CDB[6] = BMIC_SENSE_SUBSYSTEM_INFORMATION; 6800 c->Request.CDB[7] = (size >> 16) & 0xFF; 6801 c->Request.CDB[8] = (size >> 8) & 0XFF; 6802 break; 6803 case BMIC_SENSE_STORAGE_BOX_PARAMS: 6804 c->Request.CDBLen = 10; 6805 c->Request.type_attr_dir = 6806 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ); 6807 c->Request.Timeout = 0; 6808 c->Request.CDB[0] = BMIC_READ; 6809 c->Request.CDB[6] = BMIC_SENSE_STORAGE_BOX_PARAMS; 6810 c->Request.CDB[7] = (size >> 16) & 0xFF; 6811 c->Request.CDB[8] = (size >> 8) & 0XFF; 6812 break; 6813 case BMIC_IDENTIFY_CONTROLLER: 6814 c->Request.CDBLen = 10; 6815 c->Request.type_attr_dir = 6816 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ); 6817 c->Request.Timeout = 0; 6818 c->Request.CDB[0] = BMIC_READ; 6819 c->Request.CDB[1] = 0; 6820 c->Request.CDB[2] = 0; 6821 c->Request.CDB[3] = 0; 6822 c->Request.CDB[4] = 0; 6823 c->Request.CDB[5] = 0; 6824 c->Request.CDB[6] = BMIC_IDENTIFY_CONTROLLER; 6825 c->Request.CDB[7] = (size >> 16) & 0xFF; 6826 c->Request.CDB[8] = (size >> 8) & 0XFF; 6827 c->Request.CDB[9] = 0; 6828 break; 6829 default: 6830 dev_warn(&h->pdev->dev, "unknown command 0x%c\n", cmd); 6831 BUG(); 6832 } 6833 } else if (cmd_type == TYPE_MSG) { 6834 switch (cmd) { 6835 6836 case HPSA_PHYS_TARGET_RESET: 6837 c->Request.CDBLen = 16; 6838 c->Request.type_attr_dir = 6839 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE); 6840 c->Request.Timeout = 0; /* Don't time out */ 6841 memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); 6842 c->Request.CDB[0] = HPSA_RESET; 6843 c->Request.CDB[1] = HPSA_TARGET_RESET_TYPE; 6844 /* Physical target reset needs no control bytes 4-7*/ 6845 c->Request.CDB[4] = 0x00; 6846 c->Request.CDB[5] = 0x00; 6847 c->Request.CDB[6] = 0x00; 6848 c->Request.CDB[7] = 0x00; 6849 break; 6850 case HPSA_DEVICE_RESET_MSG: 6851 c->Request.CDBLen = 16; 6852 c->Request.type_attr_dir = 6853 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE); 6854 c->Request.Timeout = 0; /* Don't time out */ 6855 memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); 6856 c->Request.CDB[0] = cmd; 6857 c->Request.CDB[1] = HPSA_RESET_TYPE_LUN; 6858 /* If bytes 4-7 are zero, it means reset the */ 6859 /* LunID device */ 6860 c->Request.CDB[4] = 0x00; 6861 c->Request.CDB[5] = 0x00; 6862 c->Request.CDB[6] = 0x00; 6863 c->Request.CDB[7] = 0x00; 6864 break; 6865 default: 6866 dev_warn(&h->pdev->dev, "unknown message type %d\n", 6867 cmd); 6868 BUG(); 6869 } 6870 } else { 6871 dev_warn(&h->pdev->dev, "unknown command type %d\n", cmd_type); 6872 BUG(); 6873 } 6874 6875 switch (GET_DIR(c->Request.type_attr_dir)) { 6876 case XFER_READ: 6877 dir = DMA_FROM_DEVICE; 6878 break; 6879 case XFER_WRITE: 6880 dir = DMA_TO_DEVICE; 6881 break; 6882 case XFER_NONE: 6883 dir = DMA_NONE; 6884 break; 6885 default: 6886 dir = DMA_BIDIRECTIONAL; 6887 } 6888 if (hpsa_map_one(h->pdev, c, buff, size, dir)) 6889 return -1; 6890 return 0; 6891 } 6892 6893 /* 6894 * Map (physical) PCI mem into (virtual) kernel space 6895 */ 6896 static void __iomem *remap_pci_mem(ulong base, ulong size) 6897 { 6898 ulong page_base = ((ulong) base) & PAGE_MASK; 6899 ulong page_offs = ((ulong) base) - page_base; 6900 void __iomem *page_remapped = ioremap(page_base, 6901 page_offs + size); 6902 6903 return page_remapped ? (page_remapped + page_offs) : NULL; 6904 } 6905 6906 static inline unsigned long get_next_completion(struct ctlr_info *h, u8 q) 6907 { 6908 return h->access.command_completed(h, q); 6909 } 6910 6911 static inline bool interrupt_pending(struct ctlr_info *h) 6912 { 6913 return h->access.intr_pending(h); 6914 } 6915 6916 static inline long interrupt_not_for_us(struct ctlr_info *h) 6917 { 6918 return (h->access.intr_pending(h) == 0) || 6919 (h->interrupts_enabled == 0); 6920 } 6921 6922 static inline int bad_tag(struct ctlr_info *h, u32 tag_index, 6923 u32 raw_tag) 6924 { 6925 if (unlikely(tag_index >= h->nr_cmds)) { 6926 dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag); 6927 return 1; 6928 } 6929 return 0; 6930 } 6931 6932 static inline void finish_cmd(struct CommandList *c) 6933 { 6934 dial_up_lockup_detection_on_fw_flash_complete(c->h, c); 6935 if (likely(c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_SCSI 6936 || c->cmd_type == CMD_IOACCEL2)) 6937 complete_scsi_command(c); 6938 else if (c->cmd_type == CMD_IOCTL_PEND || c->cmd_type == IOACCEL2_TMF) 6939 complete(c->waiting); 6940 } 6941 6942 /* process completion of an indexed ("direct lookup") command */ 6943 static inline void process_indexed_cmd(struct ctlr_info *h, 6944 u32 raw_tag) 6945 { 6946 u32 tag_index; 6947 struct CommandList *c; 6948 6949 tag_index = raw_tag >> DIRECT_LOOKUP_SHIFT; 6950 if (!bad_tag(h, tag_index, raw_tag)) { 6951 c = h->cmd_pool + tag_index; 6952 finish_cmd(c); 6953 } 6954 } 6955 6956 /* Some controllers, like p400, will give us one interrupt 6957 * after a soft reset, even if we turned interrupts off. 6958 * Only need to check for this in the hpsa_xxx_discard_completions 6959 * functions. 6960 */ 6961 static int ignore_bogus_interrupt(struct ctlr_info *h) 6962 { 6963 if (likely(!reset_devices)) 6964 return 0; 6965 6966 if (likely(h->interrupts_enabled)) 6967 return 0; 6968 6969 dev_info(&h->pdev->dev, "Received interrupt while interrupts disabled " 6970 "(known firmware bug.) Ignoring.\n"); 6971 6972 return 1; 6973 } 6974 6975 /* 6976 * Convert &h->q[x] (passed to interrupt handlers) back to h. 6977 * Relies on (h-q[x] == x) being true for x such that 6978 * 0 <= x < MAX_REPLY_QUEUES. 6979 */ 6980 static struct ctlr_info *queue_to_hba(u8 *queue) 6981 { 6982 return container_of((queue - *queue), struct ctlr_info, q[0]); 6983 } 6984 6985 static irqreturn_t hpsa_intx_discard_completions(int irq, void *queue) 6986 { 6987 struct ctlr_info *h = queue_to_hba(queue); 6988 u8 q = *(u8 *) queue; 6989 u32 raw_tag; 6990 6991 if (ignore_bogus_interrupt(h)) 6992 return IRQ_NONE; 6993 6994 if (interrupt_not_for_us(h)) 6995 return IRQ_NONE; 6996 h->last_intr_timestamp = get_jiffies_64(); 6997 while (interrupt_pending(h)) { 6998 raw_tag = get_next_completion(h, q); 6999 while (raw_tag != FIFO_EMPTY) 7000 raw_tag = next_command(h, q); 7001 } 7002 return IRQ_HANDLED; 7003 } 7004 7005 static irqreturn_t hpsa_msix_discard_completions(int irq, void *queue) 7006 { 7007 struct ctlr_info *h = queue_to_hba(queue); 7008 u32 raw_tag; 7009 u8 q = *(u8 *) queue; 7010 7011 if (ignore_bogus_interrupt(h)) 7012 return IRQ_NONE; 7013 7014 h->last_intr_timestamp = get_jiffies_64(); 7015 raw_tag = get_next_completion(h, q); 7016 while (raw_tag != FIFO_EMPTY) 7017 raw_tag = next_command(h, q); 7018 return IRQ_HANDLED; 7019 } 7020 7021 static irqreturn_t do_hpsa_intr_intx(int irq, void *queue) 7022 { 7023 struct ctlr_info *h = queue_to_hba((u8 *) queue); 7024 u32 raw_tag; 7025 u8 q = *(u8 *) queue; 7026 7027 if (interrupt_not_for_us(h)) 7028 return IRQ_NONE; 7029 h->last_intr_timestamp = get_jiffies_64(); 7030 while (interrupt_pending(h)) { 7031 raw_tag = get_next_completion(h, q); 7032 while (raw_tag != FIFO_EMPTY) { 7033 process_indexed_cmd(h, raw_tag); 7034 raw_tag = next_command(h, q); 7035 } 7036 } 7037 return IRQ_HANDLED; 7038 } 7039 7040 static irqreturn_t do_hpsa_intr_msi(int irq, void *queue) 7041 { 7042 struct ctlr_info *h = queue_to_hba(queue); 7043 u32 raw_tag; 7044 u8 q = *(u8 *) queue; 7045 7046 h->last_intr_timestamp = get_jiffies_64(); 7047 raw_tag = get_next_completion(h, q); 7048 while (raw_tag != FIFO_EMPTY) { 7049 process_indexed_cmd(h, raw_tag); 7050 raw_tag = next_command(h, q); 7051 } 7052 return IRQ_HANDLED; 7053 } 7054 7055 /* Send a message CDB to the firmware. Careful, this only works 7056 * in simple mode, not performant mode due to the tag lookup. 7057 * We only ever use this immediately after a controller reset. 7058 */ 7059 static int hpsa_message(struct pci_dev *pdev, unsigned char opcode, 7060 unsigned char type) 7061 { 7062 struct Command { 7063 struct CommandListHeader CommandHeader; 7064 struct RequestBlock Request; 7065 struct ErrDescriptor ErrorDescriptor; 7066 }; 7067 struct Command *cmd; 7068 static const size_t cmd_sz = sizeof(*cmd) + 7069 sizeof(cmd->ErrorDescriptor); 7070 dma_addr_t paddr64; 7071 __le32 paddr32; 7072 u32 tag; 7073 void __iomem *vaddr; 7074 int i, err; 7075 7076 vaddr = pci_ioremap_bar(pdev, 0); 7077 if (vaddr == NULL) 7078 return -ENOMEM; 7079 7080 /* The Inbound Post Queue only accepts 32-bit physical addresses for the 7081 * CCISS commands, so they must be allocated from the lower 4GiB of 7082 * memory. 7083 */ 7084 err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); 7085 if (err) { 7086 iounmap(vaddr); 7087 return err; 7088 } 7089 7090 cmd = dma_alloc_coherent(&pdev->dev, cmd_sz, &paddr64, GFP_KERNEL); 7091 if (cmd == NULL) { 7092 iounmap(vaddr); 7093 return -ENOMEM; 7094 } 7095 7096 /* This must fit, because of the 32-bit consistent DMA mask. Also, 7097 * although there's no guarantee, we assume that the address is at 7098 * least 4-byte aligned (most likely, it's page-aligned). 7099 */ 7100 paddr32 = cpu_to_le32(paddr64); 7101 7102 cmd->CommandHeader.ReplyQueue = 0; 7103 cmd->CommandHeader.SGList = 0; 7104 cmd->CommandHeader.SGTotal = cpu_to_le16(0); 7105 cmd->CommandHeader.tag = cpu_to_le64(paddr64); 7106 memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8); 7107 7108 cmd->Request.CDBLen = 16; 7109 cmd->Request.type_attr_dir = 7110 TYPE_ATTR_DIR(TYPE_MSG, ATTR_HEADOFQUEUE, XFER_NONE); 7111 cmd->Request.Timeout = 0; /* Don't time out */ 7112 cmd->Request.CDB[0] = opcode; 7113 cmd->Request.CDB[1] = type; 7114 memset(&cmd->Request.CDB[2], 0, 14); /* rest of the CDB is reserved */ 7115 cmd->ErrorDescriptor.Addr = 7116 cpu_to_le64((le32_to_cpu(paddr32) + sizeof(*cmd))); 7117 cmd->ErrorDescriptor.Len = cpu_to_le32(sizeof(struct ErrorInfo)); 7118 7119 writel(le32_to_cpu(paddr32), vaddr + SA5_REQUEST_PORT_OFFSET); 7120 7121 for (i = 0; i < HPSA_MSG_SEND_RETRY_LIMIT; i++) { 7122 tag = readl(vaddr + SA5_REPLY_PORT_OFFSET); 7123 if ((tag & ~HPSA_SIMPLE_ERROR_BITS) == paddr64) 7124 break; 7125 msleep(HPSA_MSG_SEND_RETRY_INTERVAL_MSECS); 7126 } 7127 7128 iounmap(vaddr); 7129 7130 /* we leak the DMA buffer here ... no choice since the controller could 7131 * still complete the command. 7132 */ 7133 if (i == HPSA_MSG_SEND_RETRY_LIMIT) { 7134 dev_err(&pdev->dev, "controller message %02x:%02x timed out\n", 7135 opcode, type); 7136 return -ETIMEDOUT; 7137 } 7138 7139 dma_free_coherent(&pdev->dev, cmd_sz, cmd, paddr64); 7140 7141 if (tag & HPSA_ERROR_BIT) { 7142 dev_err(&pdev->dev, "controller message %02x:%02x failed\n", 7143 opcode, type); 7144 return -EIO; 7145 } 7146 7147 dev_info(&pdev->dev, "controller message %02x:%02x succeeded\n", 7148 opcode, type); 7149 return 0; 7150 } 7151 7152 #define hpsa_noop(p) hpsa_message(p, 3, 0) 7153 7154 static int hpsa_controller_hard_reset(struct pci_dev *pdev, 7155 void __iomem *vaddr, u32 use_doorbell) 7156 { 7157 7158 if (use_doorbell) { 7159 /* For everything after the P600, the PCI power state method 7160 * of resetting the controller doesn't work, so we have this 7161 * other way using the doorbell register. 7162 */ 7163 dev_info(&pdev->dev, "using doorbell to reset controller\n"); 7164 writel(use_doorbell, vaddr + SA5_DOORBELL); 7165 7166 /* PMC hardware guys tell us we need a 10 second delay after 7167 * doorbell reset and before any attempt to talk to the board 7168 * at all to ensure that this actually works and doesn't fall 7169 * over in some weird corner cases. 7170 */ 7171 msleep(10000); 7172 } else { /* Try to do it the PCI power state way */ 7173 7174 /* Quoting from the Open CISS Specification: "The Power 7175 * Management Control/Status Register (CSR) controls the power 7176 * state of the device. The normal operating state is D0, 7177 * CSR=00h. The software off state is D3, CSR=03h. To reset 7178 * the controller, place the interface device in D3 then to D0, 7179 * this causes a secondary PCI reset which will reset the 7180 * controller." */ 7181 7182 int rc = 0; 7183 7184 dev_info(&pdev->dev, "using PCI PM to reset controller\n"); 7185 7186 /* enter the D3hot power management state */ 7187 rc = pci_set_power_state(pdev, PCI_D3hot); 7188 if (rc) 7189 return rc; 7190 7191 msleep(500); 7192 7193 /* enter the D0 power management state */ 7194 rc = pci_set_power_state(pdev, PCI_D0); 7195 if (rc) 7196 return rc; 7197 7198 /* 7199 * The P600 requires a small delay when changing states. 7200 * Otherwise we may think the board did not reset and we bail. 7201 * This for kdump only and is particular to the P600. 7202 */ 7203 msleep(500); 7204 } 7205 return 0; 7206 } 7207 7208 static void init_driver_version(char *driver_version, int len) 7209 { 7210 memset(driver_version, 0, len); 7211 strncpy(driver_version, HPSA " " HPSA_DRIVER_VERSION, len - 1); 7212 } 7213 7214 static int write_driver_ver_to_cfgtable(struct CfgTable __iomem *cfgtable) 7215 { 7216 char *driver_version; 7217 int i, size = sizeof(cfgtable->driver_version); 7218 7219 driver_version = kmalloc(size, GFP_KERNEL); 7220 if (!driver_version) 7221 return -ENOMEM; 7222 7223 init_driver_version(driver_version, size); 7224 for (i = 0; i < size; i++) 7225 writeb(driver_version[i], &cfgtable->driver_version[i]); 7226 kfree(driver_version); 7227 return 0; 7228 } 7229 7230 static void read_driver_ver_from_cfgtable(struct CfgTable __iomem *cfgtable, 7231 unsigned char *driver_ver) 7232 { 7233 int i; 7234 7235 for (i = 0; i < sizeof(cfgtable->driver_version); i++) 7236 driver_ver[i] = readb(&cfgtable->driver_version[i]); 7237 } 7238 7239 static int controller_reset_failed(struct CfgTable __iomem *cfgtable) 7240 { 7241 7242 char *driver_ver, *old_driver_ver; 7243 int rc, size = sizeof(cfgtable->driver_version); 7244 7245 old_driver_ver = kmalloc_array(2, size, GFP_KERNEL); 7246 if (!old_driver_ver) 7247 return -ENOMEM; 7248 driver_ver = old_driver_ver + size; 7249 7250 /* After a reset, the 32 bytes of "driver version" in the cfgtable 7251 * should have been changed, otherwise we know the reset failed. 7252 */ 7253 init_driver_version(old_driver_ver, size); 7254 read_driver_ver_from_cfgtable(cfgtable, driver_ver); 7255 rc = !memcmp(driver_ver, old_driver_ver, size); 7256 kfree(old_driver_ver); 7257 return rc; 7258 } 7259 /* This does a hard reset of the controller using PCI power management 7260 * states or the using the doorbell register. 7261 */ 7262 static int hpsa_kdump_hard_reset_controller(struct pci_dev *pdev, u32 board_id) 7263 { 7264 u64 cfg_offset; 7265 u32 cfg_base_addr; 7266 u64 cfg_base_addr_index; 7267 void __iomem *vaddr; 7268 unsigned long paddr; 7269 u32 misc_fw_support; 7270 int rc; 7271 struct CfgTable __iomem *cfgtable; 7272 u32 use_doorbell; 7273 u16 command_register; 7274 7275 /* For controllers as old as the P600, this is very nearly 7276 * the same thing as 7277 * 7278 * pci_save_state(pci_dev); 7279 * pci_set_power_state(pci_dev, PCI_D3hot); 7280 * pci_set_power_state(pci_dev, PCI_D0); 7281 * pci_restore_state(pci_dev); 7282 * 7283 * For controllers newer than the P600, the pci power state 7284 * method of resetting doesn't work so we have another way 7285 * using the doorbell register. 7286 */ 7287 7288 if (!ctlr_is_resettable(board_id)) { 7289 dev_warn(&pdev->dev, "Controller not resettable\n"); 7290 return -ENODEV; 7291 } 7292 7293 /* if controller is soft- but not hard resettable... */ 7294 if (!ctlr_is_hard_resettable(board_id)) 7295 return -ENOTSUPP; /* try soft reset later. */ 7296 7297 /* Save the PCI command register */ 7298 pci_read_config_word(pdev, 4, &command_register); 7299 pci_save_state(pdev); 7300 7301 /* find the first memory BAR, so we can find the cfg table */ 7302 rc = hpsa_pci_find_memory_BAR(pdev, &paddr); 7303 if (rc) 7304 return rc; 7305 vaddr = remap_pci_mem(paddr, 0x250); 7306 if (!vaddr) 7307 return -ENOMEM; 7308 7309 /* find cfgtable in order to check if reset via doorbell is supported */ 7310 rc = hpsa_find_cfg_addrs(pdev, vaddr, &cfg_base_addr, 7311 &cfg_base_addr_index, &cfg_offset); 7312 if (rc) 7313 goto unmap_vaddr; 7314 cfgtable = remap_pci_mem(pci_resource_start(pdev, 7315 cfg_base_addr_index) + cfg_offset, sizeof(*cfgtable)); 7316 if (!cfgtable) { 7317 rc = -ENOMEM; 7318 goto unmap_vaddr; 7319 } 7320 rc = write_driver_ver_to_cfgtable(cfgtable); 7321 if (rc) 7322 goto unmap_cfgtable; 7323 7324 /* If reset via doorbell register is supported, use that. 7325 * There are two such methods. Favor the newest method. 7326 */ 7327 misc_fw_support = readl(&cfgtable->misc_fw_support); 7328 use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET2; 7329 if (use_doorbell) { 7330 use_doorbell = DOORBELL_CTLR_RESET2; 7331 } else { 7332 use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET; 7333 if (use_doorbell) { 7334 dev_warn(&pdev->dev, 7335 "Soft reset not supported. Firmware update is required.\n"); 7336 rc = -ENOTSUPP; /* try soft reset */ 7337 goto unmap_cfgtable; 7338 } 7339 } 7340 7341 rc = hpsa_controller_hard_reset(pdev, vaddr, use_doorbell); 7342 if (rc) 7343 goto unmap_cfgtable; 7344 7345 pci_restore_state(pdev); 7346 pci_write_config_word(pdev, 4, command_register); 7347 7348 /* Some devices (notably the HP Smart Array 5i Controller) 7349 need a little pause here */ 7350 msleep(HPSA_POST_RESET_PAUSE_MSECS); 7351 7352 rc = hpsa_wait_for_board_state(pdev, vaddr, BOARD_READY); 7353 if (rc) { 7354 dev_warn(&pdev->dev, 7355 "Failed waiting for board to become ready after hard reset\n"); 7356 goto unmap_cfgtable; 7357 } 7358 7359 rc = controller_reset_failed(vaddr); 7360 if (rc < 0) 7361 goto unmap_cfgtable; 7362 if (rc) { 7363 dev_warn(&pdev->dev, "Unable to successfully reset " 7364 "controller. Will try soft reset.\n"); 7365 rc = -ENOTSUPP; 7366 } else { 7367 dev_info(&pdev->dev, "board ready after hard reset.\n"); 7368 } 7369 7370 unmap_cfgtable: 7371 iounmap(cfgtable); 7372 7373 unmap_vaddr: 7374 iounmap(vaddr); 7375 return rc; 7376 } 7377 7378 /* 7379 * We cannot read the structure directly, for portability we must use 7380 * the io functions. 7381 * This is for debug only. 7382 */ 7383 static void print_cfg_table(struct device *dev, struct CfgTable __iomem *tb) 7384 { 7385 #ifdef HPSA_DEBUG 7386 int i; 7387 char temp_name[17]; 7388 7389 dev_info(dev, "Controller Configuration information\n"); 7390 dev_info(dev, "------------------------------------\n"); 7391 for (i = 0; i < 4; i++) 7392 temp_name[i] = readb(&(tb->Signature[i])); 7393 temp_name[4] = '\0'; 7394 dev_info(dev, " Signature = %s\n", temp_name); 7395 dev_info(dev, " Spec Number = %d\n", readl(&(tb->SpecValence))); 7396 dev_info(dev, " Transport methods supported = 0x%x\n", 7397 readl(&(tb->TransportSupport))); 7398 dev_info(dev, " Transport methods active = 0x%x\n", 7399 readl(&(tb->TransportActive))); 7400 dev_info(dev, " Requested transport Method = 0x%x\n", 7401 readl(&(tb->HostWrite.TransportRequest))); 7402 dev_info(dev, " Coalesce Interrupt Delay = 0x%x\n", 7403 readl(&(tb->HostWrite.CoalIntDelay))); 7404 dev_info(dev, " Coalesce Interrupt Count = 0x%x\n", 7405 readl(&(tb->HostWrite.CoalIntCount))); 7406 dev_info(dev, " Max outstanding commands = %d\n", 7407 readl(&(tb->CmdsOutMax))); 7408 dev_info(dev, " Bus Types = 0x%x\n", readl(&(tb->BusTypes))); 7409 for (i = 0; i < 16; i++) 7410 temp_name[i] = readb(&(tb->ServerName[i])); 7411 temp_name[16] = '\0'; 7412 dev_info(dev, " Server Name = %s\n", temp_name); 7413 dev_info(dev, " Heartbeat Counter = 0x%x\n\n\n", 7414 readl(&(tb->HeartBeat))); 7415 #endif /* HPSA_DEBUG */ 7416 } 7417 7418 static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr) 7419 { 7420 int i, offset, mem_type, bar_type; 7421 7422 if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ 7423 return 0; 7424 offset = 0; 7425 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { 7426 bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE; 7427 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) 7428 offset += 4; 7429 else { 7430 mem_type = pci_resource_flags(pdev, i) & 7431 PCI_BASE_ADDRESS_MEM_TYPE_MASK; 7432 switch (mem_type) { 7433 case PCI_BASE_ADDRESS_MEM_TYPE_32: 7434 case PCI_BASE_ADDRESS_MEM_TYPE_1M: 7435 offset += 4; /* 32 bit */ 7436 break; 7437 case PCI_BASE_ADDRESS_MEM_TYPE_64: 7438 offset += 8; 7439 break; 7440 default: /* reserved in PCI 2.2 */ 7441 dev_warn(&pdev->dev, 7442 "base address is invalid\n"); 7443 return -1; 7444 break; 7445 } 7446 } 7447 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) 7448 return i + 1; 7449 } 7450 return -1; 7451 } 7452 7453 static void hpsa_disable_interrupt_mode(struct ctlr_info *h) 7454 { 7455 pci_free_irq_vectors(h->pdev); 7456 h->msix_vectors = 0; 7457 } 7458 7459 static void hpsa_setup_reply_map(struct ctlr_info *h) 7460 { 7461 const struct cpumask *mask; 7462 unsigned int queue, cpu; 7463 7464 for (queue = 0; queue < h->msix_vectors; queue++) { 7465 mask = pci_irq_get_affinity(h->pdev, queue); 7466 if (!mask) 7467 goto fallback; 7468 7469 for_each_cpu(cpu, mask) 7470 h->reply_map[cpu] = queue; 7471 } 7472 return; 7473 7474 fallback: 7475 for_each_possible_cpu(cpu) 7476 h->reply_map[cpu] = 0; 7477 } 7478 7479 /* If MSI/MSI-X is supported by the kernel we will try to enable it on 7480 * controllers that are capable. If not, we use legacy INTx mode. 7481 */ 7482 static int hpsa_interrupt_mode(struct ctlr_info *h) 7483 { 7484 unsigned int flags = PCI_IRQ_LEGACY; 7485 int ret; 7486 7487 /* Some boards advertise MSI but don't really support it */ 7488 switch (h->board_id) { 7489 case 0x40700E11: 7490 case 0x40800E11: 7491 case 0x40820E11: 7492 case 0x40830E11: 7493 break; 7494 default: 7495 ret = pci_alloc_irq_vectors(h->pdev, 1, MAX_REPLY_QUEUES, 7496 PCI_IRQ_MSIX | PCI_IRQ_AFFINITY); 7497 if (ret > 0) { 7498 h->msix_vectors = ret; 7499 return 0; 7500 } 7501 7502 flags |= PCI_IRQ_MSI; 7503 break; 7504 } 7505 7506 ret = pci_alloc_irq_vectors(h->pdev, 1, 1, flags); 7507 if (ret < 0) 7508 return ret; 7509 return 0; 7510 } 7511 7512 static int hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id, 7513 bool *legacy_board) 7514 { 7515 int i; 7516 u32 subsystem_vendor_id, subsystem_device_id; 7517 7518 subsystem_vendor_id = pdev->subsystem_vendor; 7519 subsystem_device_id = pdev->subsystem_device; 7520 *board_id = ((subsystem_device_id << 16) & 0xffff0000) | 7521 subsystem_vendor_id; 7522 7523 if (legacy_board) 7524 *legacy_board = false; 7525 for (i = 0; i < ARRAY_SIZE(products); i++) 7526 if (*board_id == products[i].board_id) { 7527 if (products[i].access != &SA5A_access && 7528 products[i].access != &SA5B_access) 7529 return i; 7530 dev_warn(&pdev->dev, 7531 "legacy board ID: 0x%08x\n", 7532 *board_id); 7533 if (legacy_board) 7534 *legacy_board = true; 7535 return i; 7536 } 7537 7538 dev_warn(&pdev->dev, "unrecognized board ID: 0x%08x\n", *board_id); 7539 if (legacy_board) 7540 *legacy_board = true; 7541 return ARRAY_SIZE(products) - 1; /* generic unknown smart array */ 7542 } 7543 7544 static int hpsa_pci_find_memory_BAR(struct pci_dev *pdev, 7545 unsigned long *memory_bar) 7546 { 7547 int i; 7548 7549 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) 7550 if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) { 7551 /* addressing mode bits already removed */ 7552 *memory_bar = pci_resource_start(pdev, i); 7553 dev_dbg(&pdev->dev, "memory BAR = %lx\n", 7554 *memory_bar); 7555 return 0; 7556 } 7557 dev_warn(&pdev->dev, "no memory BAR found\n"); 7558 return -ENODEV; 7559 } 7560 7561 static int hpsa_wait_for_board_state(struct pci_dev *pdev, void __iomem *vaddr, 7562 int wait_for_ready) 7563 { 7564 int i, iterations; 7565 u32 scratchpad; 7566 if (wait_for_ready) 7567 iterations = HPSA_BOARD_READY_ITERATIONS; 7568 else 7569 iterations = HPSA_BOARD_NOT_READY_ITERATIONS; 7570 7571 for (i = 0; i < iterations; i++) { 7572 scratchpad = readl(vaddr + SA5_SCRATCHPAD_OFFSET); 7573 if (wait_for_ready) { 7574 if (scratchpad == HPSA_FIRMWARE_READY) 7575 return 0; 7576 } else { 7577 if (scratchpad != HPSA_FIRMWARE_READY) 7578 return 0; 7579 } 7580 msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS); 7581 } 7582 dev_warn(&pdev->dev, "board not ready, timed out.\n"); 7583 return -ENODEV; 7584 } 7585 7586 static int hpsa_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr, 7587 u32 *cfg_base_addr, u64 *cfg_base_addr_index, 7588 u64 *cfg_offset) 7589 { 7590 *cfg_base_addr = readl(vaddr + SA5_CTCFG_OFFSET); 7591 *cfg_offset = readl(vaddr + SA5_CTMEM_OFFSET); 7592 *cfg_base_addr &= (u32) 0x0000ffff; 7593 *cfg_base_addr_index = find_PCI_BAR_index(pdev, *cfg_base_addr); 7594 if (*cfg_base_addr_index == -1) { 7595 dev_warn(&pdev->dev, "cannot find cfg_base_addr_index\n"); 7596 return -ENODEV; 7597 } 7598 return 0; 7599 } 7600 7601 static void hpsa_free_cfgtables(struct ctlr_info *h) 7602 { 7603 if (h->transtable) { 7604 iounmap(h->transtable); 7605 h->transtable = NULL; 7606 } 7607 if (h->cfgtable) { 7608 iounmap(h->cfgtable); 7609 h->cfgtable = NULL; 7610 } 7611 } 7612 7613 /* Find and map CISS config table and transfer table 7614 + * several items must be unmapped (freed) later 7615 + * */ 7616 static int hpsa_find_cfgtables(struct ctlr_info *h) 7617 { 7618 u64 cfg_offset; 7619 u32 cfg_base_addr; 7620 u64 cfg_base_addr_index; 7621 u32 trans_offset; 7622 int rc; 7623 7624 rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr, 7625 &cfg_base_addr_index, &cfg_offset); 7626 if (rc) 7627 return rc; 7628 h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev, 7629 cfg_base_addr_index) + cfg_offset, sizeof(*h->cfgtable)); 7630 if (!h->cfgtable) { 7631 dev_err(&h->pdev->dev, "Failed mapping cfgtable\n"); 7632 return -ENOMEM; 7633 } 7634 rc = write_driver_ver_to_cfgtable(h->cfgtable); 7635 if (rc) 7636 return rc; 7637 /* Find performant mode table. */ 7638 trans_offset = readl(&h->cfgtable->TransMethodOffset); 7639 h->transtable = remap_pci_mem(pci_resource_start(h->pdev, 7640 cfg_base_addr_index)+cfg_offset+trans_offset, 7641 sizeof(*h->transtable)); 7642 if (!h->transtable) { 7643 dev_err(&h->pdev->dev, "Failed mapping transfer table\n"); 7644 hpsa_free_cfgtables(h); 7645 return -ENOMEM; 7646 } 7647 return 0; 7648 } 7649 7650 static void hpsa_get_max_perf_mode_cmds(struct ctlr_info *h) 7651 { 7652 #define MIN_MAX_COMMANDS 16 7653 BUILD_BUG_ON(MIN_MAX_COMMANDS <= HPSA_NRESERVED_CMDS); 7654 7655 h->max_commands = readl(&h->cfgtable->MaxPerformantModeCommands); 7656 7657 /* Limit commands in memory limited kdump scenario. */ 7658 if (reset_devices && h->max_commands > 32) 7659 h->max_commands = 32; 7660 7661 if (h->max_commands < MIN_MAX_COMMANDS) { 7662 dev_warn(&h->pdev->dev, 7663 "Controller reports max supported commands of %d Using %d instead. Ensure that firmware is up to date.\n", 7664 h->max_commands, 7665 MIN_MAX_COMMANDS); 7666 h->max_commands = MIN_MAX_COMMANDS; 7667 } 7668 } 7669 7670 /* If the controller reports that the total max sg entries is greater than 512, 7671 * then we know that chained SG blocks work. (Original smart arrays did not 7672 * support chained SG blocks and would return zero for max sg entries.) 7673 */ 7674 static int hpsa_supports_chained_sg_blocks(struct ctlr_info *h) 7675 { 7676 return h->maxsgentries > 512; 7677 } 7678 7679 /* Interrogate the hardware for some limits: 7680 * max commands, max SG elements without chaining, and with chaining, 7681 * SG chain block size, etc. 7682 */ 7683 static void hpsa_find_board_params(struct ctlr_info *h) 7684 { 7685 hpsa_get_max_perf_mode_cmds(h); 7686 h->nr_cmds = h->max_commands; 7687 h->maxsgentries = readl(&(h->cfgtable->MaxScatterGatherElements)); 7688 h->fw_support = readl(&(h->cfgtable->misc_fw_support)); 7689 if (hpsa_supports_chained_sg_blocks(h)) { 7690 /* Limit in-command s/g elements to 32 save dma'able memory. */ 7691 h->max_cmd_sg_entries = 32; 7692 h->chainsize = h->maxsgentries - h->max_cmd_sg_entries; 7693 h->maxsgentries--; /* save one for chain pointer */ 7694 } else { 7695 /* 7696 * Original smart arrays supported at most 31 s/g entries 7697 * embedded inline in the command (trying to use more 7698 * would lock up the controller) 7699 */ 7700 h->max_cmd_sg_entries = 31; 7701 h->maxsgentries = 31; /* default to traditional values */ 7702 h->chainsize = 0; 7703 } 7704 7705 /* Find out what task management functions are supported and cache */ 7706 h->TMFSupportFlags = readl(&(h->cfgtable->TMFSupportFlags)); 7707 if (!(HPSATMF_PHYS_TASK_ABORT & h->TMFSupportFlags)) 7708 dev_warn(&h->pdev->dev, "Physical aborts not supported\n"); 7709 if (!(HPSATMF_LOG_TASK_ABORT & h->TMFSupportFlags)) 7710 dev_warn(&h->pdev->dev, "Logical aborts not supported\n"); 7711 if (!(HPSATMF_IOACCEL_ENABLED & h->TMFSupportFlags)) 7712 dev_warn(&h->pdev->dev, "HP SSD Smart Path aborts not supported\n"); 7713 } 7714 7715 static inline bool hpsa_CISS_signature_present(struct ctlr_info *h) 7716 { 7717 if (!check_signature(h->cfgtable->Signature, "CISS", 4)) { 7718 dev_err(&h->pdev->dev, "not a valid CISS config table\n"); 7719 return false; 7720 } 7721 return true; 7722 } 7723 7724 static inline void hpsa_set_driver_support_bits(struct ctlr_info *h) 7725 { 7726 u32 driver_support; 7727 7728 driver_support = readl(&(h->cfgtable->driver_support)); 7729 /* Need to enable prefetch in the SCSI core for 6400 in x86 */ 7730 #ifdef CONFIG_X86 7731 driver_support |= ENABLE_SCSI_PREFETCH; 7732 #endif 7733 driver_support |= ENABLE_UNIT_ATTN; 7734 writel(driver_support, &(h->cfgtable->driver_support)); 7735 } 7736 7737 /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result 7738 * in a prefetch beyond physical memory. 7739 */ 7740 static inline void hpsa_p600_dma_prefetch_quirk(struct ctlr_info *h) 7741 { 7742 u32 dma_prefetch; 7743 7744 if (h->board_id != 0x3225103C) 7745 return; 7746 dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG); 7747 dma_prefetch |= 0x8000; 7748 writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG); 7749 } 7750 7751 static int hpsa_wait_for_clear_event_notify_ack(struct ctlr_info *h) 7752 { 7753 int i; 7754 u32 doorbell_value; 7755 unsigned long flags; 7756 /* wait until the clear_event_notify bit 6 is cleared by controller. */ 7757 for (i = 0; i < MAX_CLEAR_EVENT_WAIT; i++) { 7758 spin_lock_irqsave(&h->lock, flags); 7759 doorbell_value = readl(h->vaddr + SA5_DOORBELL); 7760 spin_unlock_irqrestore(&h->lock, flags); 7761 if (!(doorbell_value & DOORBELL_CLEAR_EVENTS)) 7762 goto done; 7763 /* delay and try again */ 7764 msleep(CLEAR_EVENT_WAIT_INTERVAL); 7765 } 7766 return -ENODEV; 7767 done: 7768 return 0; 7769 } 7770 7771 static int hpsa_wait_for_mode_change_ack(struct ctlr_info *h) 7772 { 7773 int i; 7774 u32 doorbell_value; 7775 unsigned long flags; 7776 7777 /* under certain very rare conditions, this can take awhile. 7778 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right 7779 * as we enter this code.) 7780 */ 7781 for (i = 0; i < MAX_MODE_CHANGE_WAIT; i++) { 7782 if (h->remove_in_progress) 7783 goto done; 7784 spin_lock_irqsave(&h->lock, flags); 7785 doorbell_value = readl(h->vaddr + SA5_DOORBELL); 7786 spin_unlock_irqrestore(&h->lock, flags); 7787 if (!(doorbell_value & CFGTBL_ChangeReq)) 7788 goto done; 7789 /* delay and try again */ 7790 msleep(MODE_CHANGE_WAIT_INTERVAL); 7791 } 7792 return -ENODEV; 7793 done: 7794 return 0; 7795 } 7796 7797 /* return -ENODEV or other reason on error, 0 on success */ 7798 static int hpsa_enter_simple_mode(struct ctlr_info *h) 7799 { 7800 u32 trans_support; 7801 7802 trans_support = readl(&(h->cfgtable->TransportSupport)); 7803 if (!(trans_support & SIMPLE_MODE)) 7804 return -ENOTSUPP; 7805 7806 h->max_commands = readl(&(h->cfgtable->CmdsOutMax)); 7807 7808 /* Update the field, and then ring the doorbell */ 7809 writel(CFGTBL_Trans_Simple, &(h->cfgtable->HostWrite.TransportRequest)); 7810 writel(0, &h->cfgtable->HostWrite.command_pool_addr_hi); 7811 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); 7812 if (hpsa_wait_for_mode_change_ack(h)) 7813 goto error; 7814 print_cfg_table(&h->pdev->dev, h->cfgtable); 7815 if (!(readl(&(h->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) 7816 goto error; 7817 h->transMethod = CFGTBL_Trans_Simple; 7818 return 0; 7819 error: 7820 dev_err(&h->pdev->dev, "failed to enter simple mode\n"); 7821 return -ENODEV; 7822 } 7823 7824 /* free items allocated or mapped by hpsa_pci_init */ 7825 static void hpsa_free_pci_init(struct ctlr_info *h) 7826 { 7827 hpsa_free_cfgtables(h); /* pci_init 4 */ 7828 iounmap(h->vaddr); /* pci_init 3 */ 7829 h->vaddr = NULL; 7830 hpsa_disable_interrupt_mode(h); /* pci_init 2 */ 7831 /* 7832 * call pci_disable_device before pci_release_regions per 7833 * Documentation/driver-api/pci/pci.rst 7834 */ 7835 pci_disable_device(h->pdev); /* pci_init 1 */ 7836 pci_release_regions(h->pdev); /* pci_init 2 */ 7837 } 7838 7839 /* several items must be freed later */ 7840 static int hpsa_pci_init(struct ctlr_info *h) 7841 { 7842 int prod_index, err; 7843 bool legacy_board; 7844 7845 prod_index = hpsa_lookup_board_id(h->pdev, &h->board_id, &legacy_board); 7846 if (prod_index < 0) 7847 return prod_index; 7848 h->product_name = products[prod_index].product_name; 7849 h->access = *(products[prod_index].access); 7850 h->legacy_board = legacy_board; 7851 pci_disable_link_state(h->pdev, PCIE_LINK_STATE_L0S | 7852 PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM); 7853 7854 err = pci_enable_device(h->pdev); 7855 if (err) { 7856 dev_err(&h->pdev->dev, "failed to enable PCI device\n"); 7857 pci_disable_device(h->pdev); 7858 return err; 7859 } 7860 7861 err = pci_request_regions(h->pdev, HPSA); 7862 if (err) { 7863 dev_err(&h->pdev->dev, 7864 "failed to obtain PCI resources\n"); 7865 pci_disable_device(h->pdev); 7866 return err; 7867 } 7868 7869 pci_set_master(h->pdev); 7870 7871 err = hpsa_interrupt_mode(h); 7872 if (err) 7873 goto clean1; 7874 7875 /* setup mapping between CPU and reply queue */ 7876 hpsa_setup_reply_map(h); 7877 7878 err = hpsa_pci_find_memory_BAR(h->pdev, &h->paddr); 7879 if (err) 7880 goto clean2; /* intmode+region, pci */ 7881 h->vaddr = remap_pci_mem(h->paddr, 0x250); 7882 if (!h->vaddr) { 7883 dev_err(&h->pdev->dev, "failed to remap PCI mem\n"); 7884 err = -ENOMEM; 7885 goto clean2; /* intmode+region, pci */ 7886 } 7887 err = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY); 7888 if (err) 7889 goto clean3; /* vaddr, intmode+region, pci */ 7890 err = hpsa_find_cfgtables(h); 7891 if (err) 7892 goto clean3; /* vaddr, intmode+region, pci */ 7893 hpsa_find_board_params(h); 7894 7895 if (!hpsa_CISS_signature_present(h)) { 7896 err = -ENODEV; 7897 goto clean4; /* cfgtables, vaddr, intmode+region, pci */ 7898 } 7899 hpsa_set_driver_support_bits(h); 7900 hpsa_p600_dma_prefetch_quirk(h); 7901 err = hpsa_enter_simple_mode(h); 7902 if (err) 7903 goto clean4; /* cfgtables, vaddr, intmode+region, pci */ 7904 return 0; 7905 7906 clean4: /* cfgtables, vaddr, intmode+region, pci */ 7907 hpsa_free_cfgtables(h); 7908 clean3: /* vaddr, intmode+region, pci */ 7909 iounmap(h->vaddr); 7910 h->vaddr = NULL; 7911 clean2: /* intmode+region, pci */ 7912 hpsa_disable_interrupt_mode(h); 7913 clean1: 7914 /* 7915 * call pci_disable_device before pci_release_regions per 7916 * Documentation/driver-api/pci/pci.rst 7917 */ 7918 pci_disable_device(h->pdev); 7919 pci_release_regions(h->pdev); 7920 return err; 7921 } 7922 7923 static void hpsa_hba_inquiry(struct ctlr_info *h) 7924 { 7925 int rc; 7926 7927 #define HBA_INQUIRY_BYTE_COUNT 64 7928 h->hba_inquiry_data = kmalloc(HBA_INQUIRY_BYTE_COUNT, GFP_KERNEL); 7929 if (!h->hba_inquiry_data) 7930 return; 7931 rc = hpsa_scsi_do_inquiry(h, RAID_CTLR_LUNID, 0, 7932 h->hba_inquiry_data, HBA_INQUIRY_BYTE_COUNT); 7933 if (rc != 0) { 7934 kfree(h->hba_inquiry_data); 7935 h->hba_inquiry_data = NULL; 7936 } 7937 } 7938 7939 static int hpsa_init_reset_devices(struct pci_dev *pdev, u32 board_id) 7940 { 7941 int rc, i; 7942 void __iomem *vaddr; 7943 7944 if (!reset_devices) 7945 return 0; 7946 7947 /* kdump kernel is loading, we don't know in which state is 7948 * the pci interface. The dev->enable_cnt is equal zero 7949 * so we call enable+disable, wait a while and switch it on. 7950 */ 7951 rc = pci_enable_device(pdev); 7952 if (rc) { 7953 dev_warn(&pdev->dev, "Failed to enable PCI device\n"); 7954 return -ENODEV; 7955 } 7956 pci_disable_device(pdev); 7957 msleep(260); /* a randomly chosen number */ 7958 rc = pci_enable_device(pdev); 7959 if (rc) { 7960 dev_warn(&pdev->dev, "failed to enable device.\n"); 7961 return -ENODEV; 7962 } 7963 7964 pci_set_master(pdev); 7965 7966 vaddr = pci_ioremap_bar(pdev, 0); 7967 if (vaddr == NULL) { 7968 rc = -ENOMEM; 7969 goto out_disable; 7970 } 7971 writel(SA5_INTR_OFF, vaddr + SA5_REPLY_INTR_MASK_OFFSET); 7972 iounmap(vaddr); 7973 7974 /* Reset the controller with a PCI power-cycle or via doorbell */ 7975 rc = hpsa_kdump_hard_reset_controller(pdev, board_id); 7976 7977 /* -ENOTSUPP here means we cannot reset the controller 7978 * but it's already (and still) up and running in 7979 * "performant mode". Or, it might be 640x, which can't reset 7980 * due to concerns about shared bbwc between 6402/6404 pair. 7981 */ 7982 if (rc) 7983 goto out_disable; 7984 7985 /* Now try to get the controller to respond to a no-op */ 7986 dev_info(&pdev->dev, "Waiting for controller to respond to no-op\n"); 7987 for (i = 0; i < HPSA_POST_RESET_NOOP_RETRIES; i++) { 7988 if (hpsa_noop(pdev) == 0) 7989 break; 7990 else 7991 dev_warn(&pdev->dev, "no-op failed%s\n", 7992 (i < 11 ? "; re-trying" : "")); 7993 } 7994 7995 out_disable: 7996 7997 pci_disable_device(pdev); 7998 return rc; 7999 } 8000 8001 static void hpsa_free_cmd_pool(struct ctlr_info *h) 8002 { 8003 kfree(h->cmd_pool_bits); 8004 h->cmd_pool_bits = NULL; 8005 if (h->cmd_pool) { 8006 dma_free_coherent(&h->pdev->dev, 8007 h->nr_cmds * sizeof(struct CommandList), 8008 h->cmd_pool, 8009 h->cmd_pool_dhandle); 8010 h->cmd_pool = NULL; 8011 h->cmd_pool_dhandle = 0; 8012 } 8013 if (h->errinfo_pool) { 8014 dma_free_coherent(&h->pdev->dev, 8015 h->nr_cmds * sizeof(struct ErrorInfo), 8016 h->errinfo_pool, 8017 h->errinfo_pool_dhandle); 8018 h->errinfo_pool = NULL; 8019 h->errinfo_pool_dhandle = 0; 8020 } 8021 } 8022 8023 static int hpsa_alloc_cmd_pool(struct ctlr_info *h) 8024 { 8025 h->cmd_pool_bits = kcalloc(DIV_ROUND_UP(h->nr_cmds, BITS_PER_LONG), 8026 sizeof(unsigned long), 8027 GFP_KERNEL); 8028 h->cmd_pool = dma_alloc_coherent(&h->pdev->dev, 8029 h->nr_cmds * sizeof(*h->cmd_pool), 8030 &h->cmd_pool_dhandle, GFP_KERNEL); 8031 h->errinfo_pool = dma_alloc_coherent(&h->pdev->dev, 8032 h->nr_cmds * sizeof(*h->errinfo_pool), 8033 &h->errinfo_pool_dhandle, GFP_KERNEL); 8034 if ((h->cmd_pool_bits == NULL) 8035 || (h->cmd_pool == NULL) 8036 || (h->errinfo_pool == NULL)) { 8037 dev_err(&h->pdev->dev, "out of memory in %s", __func__); 8038 goto clean_up; 8039 } 8040 hpsa_preinitialize_commands(h); 8041 return 0; 8042 clean_up: 8043 hpsa_free_cmd_pool(h); 8044 return -ENOMEM; 8045 } 8046 8047 /* clear affinity hints and free MSI-X, MSI, or legacy INTx vectors */ 8048 static void hpsa_free_irqs(struct ctlr_info *h) 8049 { 8050 int i; 8051 int irq_vector = 0; 8052 8053 if (hpsa_simple_mode) 8054 irq_vector = h->intr_mode; 8055 8056 if (!h->msix_vectors || h->intr_mode != PERF_MODE_INT) { 8057 /* Single reply queue, only one irq to free */ 8058 free_irq(pci_irq_vector(h->pdev, irq_vector), 8059 &h->q[h->intr_mode]); 8060 h->q[h->intr_mode] = 0; 8061 return; 8062 } 8063 8064 for (i = 0; i < h->msix_vectors; i++) { 8065 free_irq(pci_irq_vector(h->pdev, i), &h->q[i]); 8066 h->q[i] = 0; 8067 } 8068 for (; i < MAX_REPLY_QUEUES; i++) 8069 h->q[i] = 0; 8070 } 8071 8072 /* returns 0 on success; cleans up and returns -Enn on error */ 8073 static int hpsa_request_irqs(struct ctlr_info *h, 8074 irqreturn_t (*msixhandler)(int, void *), 8075 irqreturn_t (*intxhandler)(int, void *)) 8076 { 8077 int rc, i; 8078 int irq_vector = 0; 8079 8080 if (hpsa_simple_mode) 8081 irq_vector = h->intr_mode; 8082 8083 /* 8084 * initialize h->q[x] = x so that interrupt handlers know which 8085 * queue to process. 8086 */ 8087 for (i = 0; i < MAX_REPLY_QUEUES; i++) 8088 h->q[i] = (u8) i; 8089 8090 if (h->intr_mode == PERF_MODE_INT && h->msix_vectors > 0) { 8091 /* If performant mode and MSI-X, use multiple reply queues */ 8092 for (i = 0; i < h->msix_vectors; i++) { 8093 sprintf(h->intrname[i], "%s-msix%d", h->devname, i); 8094 rc = request_irq(pci_irq_vector(h->pdev, i), msixhandler, 8095 0, h->intrname[i], 8096 &h->q[i]); 8097 if (rc) { 8098 int j; 8099 8100 dev_err(&h->pdev->dev, 8101 "failed to get irq %d for %s\n", 8102 pci_irq_vector(h->pdev, i), h->devname); 8103 for (j = 0; j < i; j++) { 8104 free_irq(pci_irq_vector(h->pdev, j), &h->q[j]); 8105 h->q[j] = 0; 8106 } 8107 for (; j < MAX_REPLY_QUEUES; j++) 8108 h->q[j] = 0; 8109 return rc; 8110 } 8111 } 8112 } else { 8113 /* Use single reply pool */ 8114 if (h->msix_vectors > 0 || h->pdev->msi_enabled) { 8115 sprintf(h->intrname[0], "%s-msi%s", h->devname, 8116 h->msix_vectors ? "x" : ""); 8117 rc = request_irq(pci_irq_vector(h->pdev, irq_vector), 8118 msixhandler, 0, 8119 h->intrname[0], 8120 &h->q[h->intr_mode]); 8121 } else { 8122 sprintf(h->intrname[h->intr_mode], 8123 "%s-intx", h->devname); 8124 rc = request_irq(pci_irq_vector(h->pdev, irq_vector), 8125 intxhandler, IRQF_SHARED, 8126 h->intrname[0], 8127 &h->q[h->intr_mode]); 8128 } 8129 } 8130 if (rc) { 8131 dev_err(&h->pdev->dev, "failed to get irq %d for %s\n", 8132 pci_irq_vector(h->pdev, irq_vector), h->devname); 8133 hpsa_free_irqs(h); 8134 return -ENODEV; 8135 } 8136 return 0; 8137 } 8138 8139 static int hpsa_kdump_soft_reset(struct ctlr_info *h) 8140 { 8141 int rc; 8142 hpsa_send_host_reset(h, HPSA_RESET_TYPE_CONTROLLER); 8143 8144 dev_info(&h->pdev->dev, "Waiting for board to soft reset.\n"); 8145 rc = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_NOT_READY); 8146 if (rc) { 8147 dev_warn(&h->pdev->dev, "Soft reset had no effect.\n"); 8148 return rc; 8149 } 8150 8151 dev_info(&h->pdev->dev, "Board reset, awaiting READY status.\n"); 8152 rc = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY); 8153 if (rc) { 8154 dev_warn(&h->pdev->dev, "Board failed to become ready " 8155 "after soft reset.\n"); 8156 return rc; 8157 } 8158 8159 return 0; 8160 } 8161 8162 static void hpsa_free_reply_queues(struct ctlr_info *h) 8163 { 8164 int i; 8165 8166 for (i = 0; i < h->nreply_queues; i++) { 8167 if (!h->reply_queue[i].head) 8168 continue; 8169 dma_free_coherent(&h->pdev->dev, 8170 h->reply_queue_size, 8171 h->reply_queue[i].head, 8172 h->reply_queue[i].busaddr); 8173 h->reply_queue[i].head = NULL; 8174 h->reply_queue[i].busaddr = 0; 8175 } 8176 h->reply_queue_size = 0; 8177 } 8178 8179 static void hpsa_undo_allocations_after_kdump_soft_reset(struct ctlr_info *h) 8180 { 8181 hpsa_free_performant_mode(h); /* init_one 7 */ 8182 hpsa_free_sg_chain_blocks(h); /* init_one 6 */ 8183 hpsa_free_cmd_pool(h); /* init_one 5 */ 8184 hpsa_free_irqs(h); /* init_one 4 */ 8185 scsi_host_put(h->scsi_host); /* init_one 3 */ 8186 h->scsi_host = NULL; /* init_one 3 */ 8187 hpsa_free_pci_init(h); /* init_one 2_5 */ 8188 free_percpu(h->lockup_detected); /* init_one 2 */ 8189 h->lockup_detected = NULL; /* init_one 2 */ 8190 if (h->resubmit_wq) { 8191 destroy_workqueue(h->resubmit_wq); /* init_one 1 */ 8192 h->resubmit_wq = NULL; 8193 } 8194 if (h->rescan_ctlr_wq) { 8195 destroy_workqueue(h->rescan_ctlr_wq); 8196 h->rescan_ctlr_wq = NULL; 8197 } 8198 if (h->monitor_ctlr_wq) { 8199 destroy_workqueue(h->monitor_ctlr_wq); 8200 h->monitor_ctlr_wq = NULL; 8201 } 8202 8203 kfree(h); /* init_one 1 */ 8204 } 8205 8206 /* Called when controller lockup detected. */ 8207 static void fail_all_outstanding_cmds(struct ctlr_info *h) 8208 { 8209 int i, refcount; 8210 struct CommandList *c; 8211 int failcount = 0; 8212 8213 flush_workqueue(h->resubmit_wq); /* ensure all cmds are fully built */ 8214 for (i = 0; i < h->nr_cmds; i++) { 8215 c = h->cmd_pool + i; 8216 refcount = atomic_inc_return(&c->refcount); 8217 if (refcount > 1) { 8218 c->err_info->CommandStatus = CMD_CTLR_LOCKUP; 8219 finish_cmd(c); 8220 atomic_dec(&h->commands_outstanding); 8221 failcount++; 8222 } 8223 cmd_free(h, c); 8224 } 8225 dev_warn(&h->pdev->dev, 8226 "failed %d commands in fail_all\n", failcount); 8227 } 8228 8229 static void set_lockup_detected_for_all_cpus(struct ctlr_info *h, u32 value) 8230 { 8231 int cpu; 8232 8233 for_each_online_cpu(cpu) { 8234 u32 *lockup_detected; 8235 lockup_detected = per_cpu_ptr(h->lockup_detected, cpu); 8236 *lockup_detected = value; 8237 } 8238 wmb(); /* be sure the per-cpu variables are out to memory */ 8239 } 8240 8241 static void controller_lockup_detected(struct ctlr_info *h) 8242 { 8243 unsigned long flags; 8244 u32 lockup_detected; 8245 8246 h->access.set_intr_mask(h, HPSA_INTR_OFF); 8247 spin_lock_irqsave(&h->lock, flags); 8248 lockup_detected = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET); 8249 if (!lockup_detected) { 8250 /* no heartbeat, but controller gave us a zero. */ 8251 dev_warn(&h->pdev->dev, 8252 "lockup detected after %d but scratchpad register is zero\n", 8253 h->heartbeat_sample_interval / HZ); 8254 lockup_detected = 0xffffffff; 8255 } 8256 set_lockup_detected_for_all_cpus(h, lockup_detected); 8257 spin_unlock_irqrestore(&h->lock, flags); 8258 dev_warn(&h->pdev->dev, "Controller lockup detected: 0x%08x after %d\n", 8259 lockup_detected, h->heartbeat_sample_interval / HZ); 8260 if (lockup_detected == 0xffff0000) { 8261 dev_warn(&h->pdev->dev, "Telling controller to do a CHKPT\n"); 8262 writel(DOORBELL_GENERATE_CHKPT, h->vaddr + SA5_DOORBELL); 8263 } 8264 pci_disable_device(h->pdev); 8265 fail_all_outstanding_cmds(h); 8266 } 8267 8268 static int detect_controller_lockup(struct ctlr_info *h) 8269 { 8270 u64 now; 8271 u32 heartbeat; 8272 unsigned long flags; 8273 8274 now = get_jiffies_64(); 8275 /* If we've received an interrupt recently, we're ok. */ 8276 if (time_after64(h->last_intr_timestamp + 8277 (h->heartbeat_sample_interval), now)) 8278 return false; 8279 8280 /* 8281 * If we've already checked the heartbeat recently, we're ok. 8282 * This could happen if someone sends us a signal. We 8283 * otherwise don't care about signals in this thread. 8284 */ 8285 if (time_after64(h->last_heartbeat_timestamp + 8286 (h->heartbeat_sample_interval), now)) 8287 return false; 8288 8289 /* If heartbeat has not changed since we last looked, we're not ok. */ 8290 spin_lock_irqsave(&h->lock, flags); 8291 heartbeat = readl(&h->cfgtable->HeartBeat); 8292 spin_unlock_irqrestore(&h->lock, flags); 8293 if (h->last_heartbeat == heartbeat) { 8294 controller_lockup_detected(h); 8295 return true; 8296 } 8297 8298 /* We're ok. */ 8299 h->last_heartbeat = heartbeat; 8300 h->last_heartbeat_timestamp = now; 8301 return false; 8302 } 8303 8304 /* 8305 * Set ioaccel status for all ioaccel volumes. 8306 * 8307 * Called from monitor controller worker (hpsa_event_monitor_worker) 8308 * 8309 * A Volume (or Volumes that comprise an Array set) may be undergoing a 8310 * transformation, so we will be turning off ioaccel for all volumes that 8311 * make up the Array. 8312 */ 8313 static void hpsa_set_ioaccel_status(struct ctlr_info *h) 8314 { 8315 int rc; 8316 int i; 8317 u8 ioaccel_status; 8318 unsigned char *buf; 8319 struct hpsa_scsi_dev_t *device; 8320 8321 if (!h) 8322 return; 8323 8324 buf = kmalloc(64, GFP_KERNEL); 8325 if (!buf) 8326 return; 8327 8328 /* 8329 * Run through current device list used during I/O requests. 8330 */ 8331 for (i = 0; i < h->ndevices; i++) { 8332 int offload_to_be_enabled = 0; 8333 int offload_config = 0; 8334 8335 device = h->dev[i]; 8336 8337 if (!device) 8338 continue; 8339 if (!hpsa_vpd_page_supported(h, device->scsi3addr, 8340 HPSA_VPD_LV_IOACCEL_STATUS)) 8341 continue; 8342 8343 memset(buf, 0, 64); 8344 8345 rc = hpsa_scsi_do_inquiry(h, device->scsi3addr, 8346 VPD_PAGE | HPSA_VPD_LV_IOACCEL_STATUS, 8347 buf, 64); 8348 if (rc != 0) 8349 continue; 8350 8351 ioaccel_status = buf[IOACCEL_STATUS_BYTE]; 8352 8353 /* 8354 * Check if offload is still configured on 8355 */ 8356 offload_config = 8357 !!(ioaccel_status & OFFLOAD_CONFIGURED_BIT); 8358 /* 8359 * If offload is configured on, check to see if ioaccel 8360 * needs to be enabled. 8361 */ 8362 if (offload_config) 8363 offload_to_be_enabled = 8364 !!(ioaccel_status & OFFLOAD_ENABLED_BIT); 8365 8366 /* 8367 * If ioaccel is to be re-enabled, re-enable later during the 8368 * scan operation so the driver can get a fresh raidmap 8369 * before turning ioaccel back on. 8370 */ 8371 if (offload_to_be_enabled) 8372 continue; 8373 8374 /* 8375 * Immediately turn off ioaccel for any volume the 8376 * controller tells us to. Some of the reasons could be: 8377 * transformation - change to the LVs of an Array. 8378 * degraded volume - component failure 8379 */ 8380 hpsa_turn_off_ioaccel_for_device(device); 8381 } 8382 8383 kfree(buf); 8384 } 8385 8386 static void hpsa_ack_ctlr_events(struct ctlr_info *h) 8387 { 8388 char *event_type; 8389 8390 if (!(h->fw_support & MISC_FW_EVENT_NOTIFY)) 8391 return; 8392 8393 /* Ask the controller to clear the events we're handling. */ 8394 if ((h->transMethod & (CFGTBL_Trans_io_accel1 8395 | CFGTBL_Trans_io_accel2)) && 8396 (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_STATE_CHANGE || 8397 h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_CONFIG_CHANGE)) { 8398 8399 if (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_STATE_CHANGE) 8400 event_type = "state change"; 8401 if (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_CONFIG_CHANGE) 8402 event_type = "configuration change"; 8403 /* Stop sending new RAID offload reqs via the IO accelerator */ 8404 scsi_block_requests(h->scsi_host); 8405 hpsa_set_ioaccel_status(h); 8406 hpsa_drain_accel_commands(h); 8407 /* Set 'accelerator path config change' bit */ 8408 dev_warn(&h->pdev->dev, 8409 "Acknowledging event: 0x%08x (HP SSD Smart Path %s)\n", 8410 h->events, event_type); 8411 writel(h->events, &(h->cfgtable->clear_event_notify)); 8412 /* Set the "clear event notify field update" bit 6 */ 8413 writel(DOORBELL_CLEAR_EVENTS, h->vaddr + SA5_DOORBELL); 8414 /* Wait until ctlr clears 'clear event notify field', bit 6 */ 8415 hpsa_wait_for_clear_event_notify_ack(h); 8416 scsi_unblock_requests(h->scsi_host); 8417 } else { 8418 /* Acknowledge controller notification events. */ 8419 writel(h->events, &(h->cfgtable->clear_event_notify)); 8420 writel(DOORBELL_CLEAR_EVENTS, h->vaddr + SA5_DOORBELL); 8421 hpsa_wait_for_clear_event_notify_ack(h); 8422 } 8423 return; 8424 } 8425 8426 /* Check a register on the controller to see if there are configuration 8427 * changes (added/changed/removed logical drives, etc.) which mean that 8428 * we should rescan the controller for devices. 8429 * Also check flag for driver-initiated rescan. 8430 */ 8431 static int hpsa_ctlr_needs_rescan(struct ctlr_info *h) 8432 { 8433 if (h->drv_req_rescan) { 8434 h->drv_req_rescan = 0; 8435 return 1; 8436 } 8437 8438 if (!(h->fw_support & MISC_FW_EVENT_NOTIFY)) 8439 return 0; 8440 8441 h->events = readl(&(h->cfgtable->event_notify)); 8442 return h->events & RESCAN_REQUIRED_EVENT_BITS; 8443 } 8444 8445 /* 8446 * Check if any of the offline devices have become ready 8447 */ 8448 static int hpsa_offline_devices_ready(struct ctlr_info *h) 8449 { 8450 unsigned long flags; 8451 struct offline_device_entry *d; 8452 struct list_head *this, *tmp; 8453 8454 spin_lock_irqsave(&h->offline_device_lock, flags); 8455 list_for_each_safe(this, tmp, &h->offline_device_list) { 8456 d = list_entry(this, struct offline_device_entry, 8457 offline_list); 8458 spin_unlock_irqrestore(&h->offline_device_lock, flags); 8459 if (!hpsa_volume_offline(h, d->scsi3addr)) { 8460 spin_lock_irqsave(&h->offline_device_lock, flags); 8461 list_del(&d->offline_list); 8462 spin_unlock_irqrestore(&h->offline_device_lock, flags); 8463 return 1; 8464 } 8465 spin_lock_irqsave(&h->offline_device_lock, flags); 8466 } 8467 spin_unlock_irqrestore(&h->offline_device_lock, flags); 8468 return 0; 8469 } 8470 8471 static int hpsa_luns_changed(struct ctlr_info *h) 8472 { 8473 int rc = 1; /* assume there are changes */ 8474 struct ReportLUNdata *logdev = NULL; 8475 8476 /* if we can't find out if lun data has changed, 8477 * assume that it has. 8478 */ 8479 8480 if (!h->lastlogicals) 8481 return rc; 8482 8483 logdev = kzalloc(sizeof(*logdev), GFP_KERNEL); 8484 if (!logdev) 8485 return rc; 8486 8487 if (hpsa_scsi_do_report_luns(h, 1, logdev, sizeof(*logdev), 0)) { 8488 dev_warn(&h->pdev->dev, 8489 "report luns failed, can't track lun changes.\n"); 8490 goto out; 8491 } 8492 if (memcmp(logdev, h->lastlogicals, sizeof(*logdev))) { 8493 dev_info(&h->pdev->dev, 8494 "Lun changes detected.\n"); 8495 memcpy(h->lastlogicals, logdev, sizeof(*logdev)); 8496 goto out; 8497 } else 8498 rc = 0; /* no changes detected. */ 8499 out: 8500 kfree(logdev); 8501 return rc; 8502 } 8503 8504 static void hpsa_perform_rescan(struct ctlr_info *h) 8505 { 8506 struct Scsi_Host *sh = NULL; 8507 unsigned long flags; 8508 8509 /* 8510 * Do the scan after the reset 8511 */ 8512 spin_lock_irqsave(&h->reset_lock, flags); 8513 if (h->reset_in_progress) { 8514 h->drv_req_rescan = 1; 8515 spin_unlock_irqrestore(&h->reset_lock, flags); 8516 return; 8517 } 8518 spin_unlock_irqrestore(&h->reset_lock, flags); 8519 8520 sh = scsi_host_get(h->scsi_host); 8521 if (sh != NULL) { 8522 hpsa_scan_start(sh); 8523 scsi_host_put(sh); 8524 h->drv_req_rescan = 0; 8525 } 8526 } 8527 8528 /* 8529 * watch for controller events 8530 */ 8531 static void hpsa_event_monitor_worker(struct work_struct *work) 8532 { 8533 struct ctlr_info *h = container_of(to_delayed_work(work), 8534 struct ctlr_info, event_monitor_work); 8535 unsigned long flags; 8536 8537 spin_lock_irqsave(&h->lock, flags); 8538 if (h->remove_in_progress) { 8539 spin_unlock_irqrestore(&h->lock, flags); 8540 return; 8541 } 8542 spin_unlock_irqrestore(&h->lock, flags); 8543 8544 if (hpsa_ctlr_needs_rescan(h)) { 8545 hpsa_ack_ctlr_events(h); 8546 hpsa_perform_rescan(h); 8547 } 8548 8549 spin_lock_irqsave(&h->lock, flags); 8550 if (!h->remove_in_progress) 8551 queue_delayed_work(h->monitor_ctlr_wq, &h->event_monitor_work, 8552 HPSA_EVENT_MONITOR_INTERVAL); 8553 spin_unlock_irqrestore(&h->lock, flags); 8554 } 8555 8556 static void hpsa_rescan_ctlr_worker(struct work_struct *work) 8557 { 8558 unsigned long flags; 8559 struct ctlr_info *h = container_of(to_delayed_work(work), 8560 struct ctlr_info, rescan_ctlr_work); 8561 8562 spin_lock_irqsave(&h->lock, flags); 8563 if (h->remove_in_progress) { 8564 spin_unlock_irqrestore(&h->lock, flags); 8565 return; 8566 } 8567 spin_unlock_irqrestore(&h->lock, flags); 8568 8569 if (h->drv_req_rescan || hpsa_offline_devices_ready(h)) { 8570 hpsa_perform_rescan(h); 8571 } else if (h->discovery_polling) { 8572 if (hpsa_luns_changed(h)) { 8573 dev_info(&h->pdev->dev, 8574 "driver discovery polling rescan.\n"); 8575 hpsa_perform_rescan(h); 8576 } 8577 } 8578 spin_lock_irqsave(&h->lock, flags); 8579 if (!h->remove_in_progress) 8580 queue_delayed_work(h->rescan_ctlr_wq, &h->rescan_ctlr_work, 8581 h->heartbeat_sample_interval); 8582 spin_unlock_irqrestore(&h->lock, flags); 8583 } 8584 8585 static void hpsa_monitor_ctlr_worker(struct work_struct *work) 8586 { 8587 unsigned long flags; 8588 struct ctlr_info *h = container_of(to_delayed_work(work), 8589 struct ctlr_info, monitor_ctlr_work); 8590 8591 detect_controller_lockup(h); 8592 if (lockup_detected(h)) 8593 return; 8594 8595 spin_lock_irqsave(&h->lock, flags); 8596 if (!h->remove_in_progress) 8597 queue_delayed_work(h->monitor_ctlr_wq, &h->monitor_ctlr_work, 8598 h->heartbeat_sample_interval); 8599 spin_unlock_irqrestore(&h->lock, flags); 8600 } 8601 8602 static struct workqueue_struct *hpsa_create_controller_wq(struct ctlr_info *h, 8603 char *name) 8604 { 8605 struct workqueue_struct *wq = NULL; 8606 8607 wq = alloc_ordered_workqueue("%s_%d_hpsa", 0, name, h->ctlr); 8608 if (!wq) 8609 dev_err(&h->pdev->dev, "failed to create %s workqueue\n", name); 8610 8611 return wq; 8612 } 8613 8614 static void hpda_free_ctlr_info(struct ctlr_info *h) 8615 { 8616 kfree(h->reply_map); 8617 kfree(h); 8618 } 8619 8620 static struct ctlr_info *hpda_alloc_ctlr_info(void) 8621 { 8622 struct ctlr_info *h; 8623 8624 h = kzalloc(sizeof(*h), GFP_KERNEL); 8625 if (!h) 8626 return NULL; 8627 8628 h->reply_map = kcalloc(nr_cpu_ids, sizeof(*h->reply_map), GFP_KERNEL); 8629 if (!h->reply_map) { 8630 kfree(h); 8631 return NULL; 8632 } 8633 return h; 8634 } 8635 8636 static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) 8637 { 8638 int dac, rc; 8639 struct ctlr_info *h; 8640 int try_soft_reset = 0; 8641 unsigned long flags; 8642 u32 board_id; 8643 8644 if (number_of_controllers == 0) 8645 printk(KERN_INFO DRIVER_NAME "\n"); 8646 8647 rc = hpsa_lookup_board_id(pdev, &board_id, NULL); 8648 if (rc < 0) { 8649 dev_warn(&pdev->dev, "Board ID not found\n"); 8650 return rc; 8651 } 8652 8653 rc = hpsa_init_reset_devices(pdev, board_id); 8654 if (rc) { 8655 if (rc != -ENOTSUPP) 8656 return rc; 8657 /* If the reset fails in a particular way (it has no way to do 8658 * a proper hard reset, so returns -ENOTSUPP) we can try to do 8659 * a soft reset once we get the controller configured up to the 8660 * point that it can accept a command. 8661 */ 8662 try_soft_reset = 1; 8663 rc = 0; 8664 } 8665 8666 reinit_after_soft_reset: 8667 8668 /* Command structures must be aligned on a 32-byte boundary because 8669 * the 5 lower bits of the address are used by the hardware. and by 8670 * the driver. See comments in hpsa.h for more info. 8671 */ 8672 BUILD_BUG_ON(sizeof(struct CommandList) % COMMANDLIST_ALIGNMENT); 8673 h = hpda_alloc_ctlr_info(); 8674 if (!h) { 8675 dev_err(&pdev->dev, "Failed to allocate controller head\n"); 8676 return -ENOMEM; 8677 } 8678 8679 h->pdev = pdev; 8680 8681 h->intr_mode = hpsa_simple_mode ? SIMPLE_MODE_INT : PERF_MODE_INT; 8682 INIT_LIST_HEAD(&h->offline_device_list); 8683 spin_lock_init(&h->lock); 8684 spin_lock_init(&h->offline_device_lock); 8685 spin_lock_init(&h->scan_lock); 8686 spin_lock_init(&h->reset_lock); 8687 atomic_set(&h->passthru_cmds_avail, HPSA_MAX_CONCURRENT_PASSTHRUS); 8688 8689 /* Allocate and clear per-cpu variable lockup_detected */ 8690 h->lockup_detected = alloc_percpu(u32); 8691 if (!h->lockup_detected) { 8692 dev_err(&h->pdev->dev, "Failed to allocate lockup detector\n"); 8693 rc = -ENOMEM; 8694 goto clean1; /* aer/h */ 8695 } 8696 set_lockup_detected_for_all_cpus(h, 0); 8697 8698 rc = hpsa_pci_init(h); 8699 if (rc) 8700 goto clean2; /* lu, aer/h */ 8701 8702 /* relies on h-> settings made by hpsa_pci_init, including 8703 * interrupt_mode h->intr */ 8704 rc = hpsa_scsi_host_alloc(h); 8705 if (rc) 8706 goto clean2_5; /* pci, lu, aer/h */ 8707 8708 sprintf(h->devname, HPSA "%d", h->scsi_host->host_no); 8709 h->ctlr = number_of_controllers; 8710 number_of_controllers++; 8711 8712 /* configure PCI DMA stuff */ 8713 rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)); 8714 if (rc == 0) { 8715 dac = 1; 8716 } else { 8717 rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); 8718 if (rc == 0) { 8719 dac = 0; 8720 } else { 8721 dev_err(&pdev->dev, "no suitable DMA available\n"); 8722 goto clean3; /* shost, pci, lu, aer/h */ 8723 } 8724 } 8725 8726 /* make sure the board interrupts are off */ 8727 h->access.set_intr_mask(h, HPSA_INTR_OFF); 8728 8729 rc = hpsa_request_irqs(h, do_hpsa_intr_msi, do_hpsa_intr_intx); 8730 if (rc) 8731 goto clean3; /* shost, pci, lu, aer/h */ 8732 rc = hpsa_alloc_cmd_pool(h); 8733 if (rc) 8734 goto clean4; /* irq, shost, pci, lu, aer/h */ 8735 rc = hpsa_alloc_sg_chain_blocks(h); 8736 if (rc) 8737 goto clean5; /* cmd, irq, shost, pci, lu, aer/h */ 8738 init_waitqueue_head(&h->scan_wait_queue); 8739 init_waitqueue_head(&h->event_sync_wait_queue); 8740 mutex_init(&h->reset_mutex); 8741 h->scan_finished = 1; /* no scan currently in progress */ 8742 h->scan_waiting = 0; 8743 8744 pci_set_drvdata(pdev, h); 8745 h->ndevices = 0; 8746 8747 spin_lock_init(&h->devlock); 8748 rc = hpsa_put_ctlr_into_performant_mode(h); 8749 if (rc) 8750 goto clean6; /* sg, cmd, irq, shost, pci, lu, aer/h */ 8751 8752 /* create the resubmit workqueue */ 8753 h->rescan_ctlr_wq = hpsa_create_controller_wq(h, "rescan"); 8754 if (!h->rescan_ctlr_wq) { 8755 rc = -ENOMEM; 8756 goto clean7; 8757 } 8758 8759 h->resubmit_wq = hpsa_create_controller_wq(h, "resubmit"); 8760 if (!h->resubmit_wq) { 8761 rc = -ENOMEM; 8762 goto clean7; /* aer/h */ 8763 } 8764 8765 h->monitor_ctlr_wq = hpsa_create_controller_wq(h, "monitor"); 8766 if (!h->monitor_ctlr_wq) { 8767 rc = -ENOMEM; 8768 goto clean7; 8769 } 8770 8771 /* 8772 * At this point, the controller is ready to take commands. 8773 * Now, if reset_devices and the hard reset didn't work, try 8774 * the soft reset and see if that works. 8775 */ 8776 if (try_soft_reset) { 8777 8778 /* This is kind of gross. We may or may not get a completion 8779 * from the soft reset command, and if we do, then the value 8780 * from the fifo may or may not be valid. So, we wait 10 secs 8781 * after the reset throwing away any completions we get during 8782 * that time. Unregister the interrupt handler and register 8783 * fake ones to scoop up any residual completions. 8784 */ 8785 spin_lock_irqsave(&h->lock, flags); 8786 h->access.set_intr_mask(h, HPSA_INTR_OFF); 8787 spin_unlock_irqrestore(&h->lock, flags); 8788 hpsa_free_irqs(h); 8789 rc = hpsa_request_irqs(h, hpsa_msix_discard_completions, 8790 hpsa_intx_discard_completions); 8791 if (rc) { 8792 dev_warn(&h->pdev->dev, 8793 "Failed to request_irq after soft reset.\n"); 8794 /* 8795 * cannot goto clean7 or free_irqs will be called 8796 * again. Instead, do its work 8797 */ 8798 hpsa_free_performant_mode(h); /* clean7 */ 8799 hpsa_free_sg_chain_blocks(h); /* clean6 */ 8800 hpsa_free_cmd_pool(h); /* clean5 */ 8801 /* 8802 * skip hpsa_free_irqs(h) clean4 since that 8803 * was just called before request_irqs failed 8804 */ 8805 goto clean3; 8806 } 8807 8808 rc = hpsa_kdump_soft_reset(h); 8809 if (rc) 8810 /* Neither hard nor soft reset worked, we're hosed. */ 8811 goto clean7; 8812 8813 dev_info(&h->pdev->dev, "Board READY.\n"); 8814 dev_info(&h->pdev->dev, 8815 "Waiting for stale completions to drain.\n"); 8816 h->access.set_intr_mask(h, HPSA_INTR_ON); 8817 msleep(10000); 8818 h->access.set_intr_mask(h, HPSA_INTR_OFF); 8819 8820 rc = controller_reset_failed(h->cfgtable); 8821 if (rc) 8822 dev_info(&h->pdev->dev, 8823 "Soft reset appears to have failed.\n"); 8824 8825 /* since the controller's reset, we have to go back and re-init 8826 * everything. Easiest to just forget what we've done and do it 8827 * all over again. 8828 */ 8829 hpsa_undo_allocations_after_kdump_soft_reset(h); 8830 try_soft_reset = 0; 8831 if (rc) 8832 /* don't goto clean, we already unallocated */ 8833 return -ENODEV; 8834 8835 goto reinit_after_soft_reset; 8836 } 8837 8838 /* Enable Accelerated IO path at driver layer */ 8839 h->acciopath_status = 1; 8840 /* Disable discovery polling.*/ 8841 h->discovery_polling = 0; 8842 8843 8844 /* Turn the interrupts on so we can service requests */ 8845 h->access.set_intr_mask(h, HPSA_INTR_ON); 8846 8847 hpsa_hba_inquiry(h); 8848 8849 h->lastlogicals = kzalloc(sizeof(*(h->lastlogicals)), GFP_KERNEL); 8850 if (!h->lastlogicals) 8851 dev_info(&h->pdev->dev, 8852 "Can't track change to report lun data\n"); 8853 8854 /* hook into SCSI subsystem */ 8855 rc = hpsa_scsi_add_host(h); 8856 if (rc) 8857 goto clean7; /* perf, sg, cmd, irq, shost, pci, lu, aer/h */ 8858 8859 /* Monitor the controller for firmware lockups */ 8860 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL; 8861 INIT_DELAYED_WORK(&h->monitor_ctlr_work, hpsa_monitor_ctlr_worker); 8862 schedule_delayed_work(&h->monitor_ctlr_work, 8863 h->heartbeat_sample_interval); 8864 INIT_DELAYED_WORK(&h->rescan_ctlr_work, hpsa_rescan_ctlr_worker); 8865 queue_delayed_work(h->rescan_ctlr_wq, &h->rescan_ctlr_work, 8866 h->heartbeat_sample_interval); 8867 INIT_DELAYED_WORK(&h->event_monitor_work, hpsa_event_monitor_worker); 8868 schedule_delayed_work(&h->event_monitor_work, 8869 HPSA_EVENT_MONITOR_INTERVAL); 8870 return 0; 8871 8872 clean7: /* perf, sg, cmd, irq, shost, pci, lu, aer/h */ 8873 hpsa_free_performant_mode(h); 8874 h->access.set_intr_mask(h, HPSA_INTR_OFF); 8875 clean6: /* sg, cmd, irq, pci, lockup, wq/aer/h */ 8876 hpsa_free_sg_chain_blocks(h); 8877 clean5: /* cmd, irq, shost, pci, lu, aer/h */ 8878 hpsa_free_cmd_pool(h); 8879 clean4: /* irq, shost, pci, lu, aer/h */ 8880 hpsa_free_irqs(h); 8881 clean3: /* shost, pci, lu, aer/h */ 8882 scsi_host_put(h->scsi_host); 8883 h->scsi_host = NULL; 8884 clean2_5: /* pci, lu, aer/h */ 8885 hpsa_free_pci_init(h); 8886 clean2: /* lu, aer/h */ 8887 if (h->lockup_detected) { 8888 free_percpu(h->lockup_detected); 8889 h->lockup_detected = NULL; 8890 } 8891 clean1: /* wq/aer/h */ 8892 if (h->resubmit_wq) { 8893 destroy_workqueue(h->resubmit_wq); 8894 h->resubmit_wq = NULL; 8895 } 8896 if (h->rescan_ctlr_wq) { 8897 destroy_workqueue(h->rescan_ctlr_wq); 8898 h->rescan_ctlr_wq = NULL; 8899 } 8900 if (h->monitor_ctlr_wq) { 8901 destroy_workqueue(h->monitor_ctlr_wq); 8902 h->monitor_ctlr_wq = NULL; 8903 } 8904 kfree(h); 8905 return rc; 8906 } 8907 8908 static void hpsa_flush_cache(struct ctlr_info *h) 8909 { 8910 char *flush_buf; 8911 struct CommandList *c; 8912 int rc; 8913 8914 if (unlikely(lockup_detected(h))) 8915 return; 8916 flush_buf = kzalloc(4, GFP_KERNEL); 8917 if (!flush_buf) 8918 return; 8919 8920 c = cmd_alloc(h); 8921 8922 if (fill_cmd(c, HPSA_CACHE_FLUSH, h, flush_buf, 4, 0, 8923 RAID_CTLR_LUNID, TYPE_CMD)) { 8924 goto out; 8925 } 8926 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_TO_DEVICE, 8927 DEFAULT_TIMEOUT); 8928 if (rc) 8929 goto out; 8930 if (c->err_info->CommandStatus != 0) 8931 out: 8932 dev_warn(&h->pdev->dev, 8933 "error flushing cache on controller\n"); 8934 cmd_free(h, c); 8935 kfree(flush_buf); 8936 } 8937 8938 /* Make controller gather fresh report lun data each time we 8939 * send down a report luns request 8940 */ 8941 static void hpsa_disable_rld_caching(struct ctlr_info *h) 8942 { 8943 u32 *options; 8944 struct CommandList *c; 8945 int rc; 8946 8947 /* Don't bother trying to set diag options if locked up */ 8948 if (unlikely(h->lockup_detected)) 8949 return; 8950 8951 options = kzalloc(sizeof(*options), GFP_KERNEL); 8952 if (!options) 8953 return; 8954 8955 c = cmd_alloc(h); 8956 8957 /* first, get the current diag options settings */ 8958 if (fill_cmd(c, BMIC_SENSE_DIAG_OPTIONS, h, options, 4, 0, 8959 RAID_CTLR_LUNID, TYPE_CMD)) 8960 goto errout; 8961 8962 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE, 8963 NO_TIMEOUT); 8964 if ((rc != 0) || (c->err_info->CommandStatus != 0)) 8965 goto errout; 8966 8967 /* Now, set the bit for disabling the RLD caching */ 8968 *options |= HPSA_DIAG_OPTS_DISABLE_RLD_CACHING; 8969 8970 if (fill_cmd(c, BMIC_SET_DIAG_OPTIONS, h, options, 4, 0, 8971 RAID_CTLR_LUNID, TYPE_CMD)) 8972 goto errout; 8973 8974 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_TO_DEVICE, 8975 NO_TIMEOUT); 8976 if ((rc != 0) || (c->err_info->CommandStatus != 0)) 8977 goto errout; 8978 8979 /* Now verify that it got set: */ 8980 if (fill_cmd(c, BMIC_SENSE_DIAG_OPTIONS, h, options, 4, 0, 8981 RAID_CTLR_LUNID, TYPE_CMD)) 8982 goto errout; 8983 8984 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE, 8985 NO_TIMEOUT); 8986 if ((rc != 0) || (c->err_info->CommandStatus != 0)) 8987 goto errout; 8988 8989 if (*options & HPSA_DIAG_OPTS_DISABLE_RLD_CACHING) 8990 goto out; 8991 8992 errout: 8993 dev_err(&h->pdev->dev, 8994 "Error: failed to disable report lun data caching.\n"); 8995 out: 8996 cmd_free(h, c); 8997 kfree(options); 8998 } 8999 9000 static void __hpsa_shutdown(struct pci_dev *pdev) 9001 { 9002 struct ctlr_info *h; 9003 9004 h = pci_get_drvdata(pdev); 9005 /* Turn board interrupts off and send the flush cache command 9006 * sendcmd will turn off interrupt, and send the flush... 9007 * To write all data in the battery backed cache to disks 9008 */ 9009 hpsa_flush_cache(h); 9010 h->access.set_intr_mask(h, HPSA_INTR_OFF); 9011 hpsa_free_irqs(h); /* init_one 4 */ 9012 hpsa_disable_interrupt_mode(h); /* pci_init 2 */ 9013 } 9014 9015 static void hpsa_shutdown(struct pci_dev *pdev) 9016 { 9017 __hpsa_shutdown(pdev); 9018 pci_disable_device(pdev); 9019 } 9020 9021 static void hpsa_free_device_info(struct ctlr_info *h) 9022 { 9023 int i; 9024 9025 for (i = 0; i < h->ndevices; i++) { 9026 kfree(h->dev[i]); 9027 h->dev[i] = NULL; 9028 } 9029 } 9030 9031 static void hpsa_remove_one(struct pci_dev *pdev) 9032 { 9033 struct ctlr_info *h; 9034 unsigned long flags; 9035 9036 if (pci_get_drvdata(pdev) == NULL) { 9037 dev_err(&pdev->dev, "unable to remove device\n"); 9038 return; 9039 } 9040 h = pci_get_drvdata(pdev); 9041 9042 /* Get rid of any controller monitoring work items */ 9043 spin_lock_irqsave(&h->lock, flags); 9044 h->remove_in_progress = 1; 9045 spin_unlock_irqrestore(&h->lock, flags); 9046 cancel_delayed_work_sync(&h->monitor_ctlr_work); 9047 cancel_delayed_work_sync(&h->rescan_ctlr_work); 9048 cancel_delayed_work_sync(&h->event_monitor_work); 9049 destroy_workqueue(h->rescan_ctlr_wq); 9050 destroy_workqueue(h->resubmit_wq); 9051 destroy_workqueue(h->monitor_ctlr_wq); 9052 9053 hpsa_delete_sas_host(h); 9054 9055 /* 9056 * Call before disabling interrupts. 9057 * scsi_remove_host can trigger I/O operations especially 9058 * when multipath is enabled. There can be SYNCHRONIZE CACHE 9059 * operations which cannot complete and will hang the system. 9060 */ 9061 if (h->scsi_host) 9062 scsi_remove_host(h->scsi_host); /* init_one 8 */ 9063 /* includes hpsa_free_irqs - init_one 4 */ 9064 /* includes hpsa_disable_interrupt_mode - pci_init 2 */ 9065 __hpsa_shutdown(pdev); 9066 9067 hpsa_free_device_info(h); /* scan */ 9068 9069 kfree(h->hba_inquiry_data); /* init_one 10 */ 9070 h->hba_inquiry_data = NULL; /* init_one 10 */ 9071 hpsa_free_ioaccel2_sg_chain_blocks(h); 9072 hpsa_free_performant_mode(h); /* init_one 7 */ 9073 hpsa_free_sg_chain_blocks(h); /* init_one 6 */ 9074 hpsa_free_cmd_pool(h); /* init_one 5 */ 9075 kfree(h->lastlogicals); 9076 9077 /* hpsa_free_irqs already called via hpsa_shutdown init_one 4 */ 9078 9079 scsi_host_put(h->scsi_host); /* init_one 3 */ 9080 h->scsi_host = NULL; /* init_one 3 */ 9081 9082 /* includes hpsa_disable_interrupt_mode - pci_init 2 */ 9083 hpsa_free_pci_init(h); /* init_one 2.5 */ 9084 9085 free_percpu(h->lockup_detected); /* init_one 2 */ 9086 h->lockup_detected = NULL; /* init_one 2 */ 9087 /* (void) pci_disable_pcie_error_reporting(pdev); */ /* init_one 1 */ 9088 9089 hpda_free_ctlr_info(h); /* init_one 1 */ 9090 } 9091 9092 static int hpsa_suspend(__attribute__((unused)) struct pci_dev *pdev, 9093 __attribute__((unused)) pm_message_t state) 9094 { 9095 return -ENOSYS; 9096 } 9097 9098 static int hpsa_resume(__attribute__((unused)) struct pci_dev *pdev) 9099 { 9100 return -ENOSYS; 9101 } 9102 9103 static struct pci_driver hpsa_pci_driver = { 9104 .name = HPSA, 9105 .probe = hpsa_init_one, 9106 .remove = hpsa_remove_one, 9107 .id_table = hpsa_pci_device_id, /* id_table */ 9108 .shutdown = hpsa_shutdown, 9109 .suspend = hpsa_suspend, 9110 .resume = hpsa_resume, 9111 }; 9112 9113 /* Fill in bucket_map[], given nsgs (the max number of 9114 * scatter gather elements supported) and bucket[], 9115 * which is an array of 8 integers. The bucket[] array 9116 * contains 8 different DMA transfer sizes (in 16 9117 * byte increments) which the controller uses to fetch 9118 * commands. This function fills in bucket_map[], which 9119 * maps a given number of scatter gather elements to one of 9120 * the 8 DMA transfer sizes. The point of it is to allow the 9121 * controller to only do as much DMA as needed to fetch the 9122 * command, with the DMA transfer size encoded in the lower 9123 * bits of the command address. 9124 */ 9125 static void calc_bucket_map(int bucket[], int num_buckets, 9126 int nsgs, int min_blocks, u32 *bucket_map) 9127 { 9128 int i, j, b, size; 9129 9130 /* Note, bucket_map must have nsgs+1 entries. */ 9131 for (i = 0; i <= nsgs; i++) { 9132 /* Compute size of a command with i SG entries */ 9133 size = i + min_blocks; 9134 b = num_buckets; /* Assume the biggest bucket */ 9135 /* Find the bucket that is just big enough */ 9136 for (j = 0; j < num_buckets; j++) { 9137 if (bucket[j] >= size) { 9138 b = j; 9139 break; 9140 } 9141 } 9142 /* for a command with i SG entries, use bucket b. */ 9143 bucket_map[i] = b; 9144 } 9145 } 9146 9147 /* 9148 * return -ENODEV on err, 0 on success (or no action) 9149 * allocates numerous items that must be freed later 9150 */ 9151 static int hpsa_enter_performant_mode(struct ctlr_info *h, u32 trans_support) 9152 { 9153 int i; 9154 unsigned long register_value; 9155 unsigned long transMethod = CFGTBL_Trans_Performant | 9156 (trans_support & CFGTBL_Trans_use_short_tags) | 9157 CFGTBL_Trans_enable_directed_msix | 9158 (trans_support & (CFGTBL_Trans_io_accel1 | 9159 CFGTBL_Trans_io_accel2)); 9160 struct access_method access = SA5_performant_access; 9161 9162 /* This is a bit complicated. There are 8 registers on 9163 * the controller which we write to to tell it 8 different 9164 * sizes of commands which there may be. It's a way of 9165 * reducing the DMA done to fetch each command. Encoded into 9166 * each command's tag are 3 bits which communicate to the controller 9167 * which of the eight sizes that command fits within. The size of 9168 * each command depends on how many scatter gather entries there are. 9169 * Each SG entry requires 16 bytes. The eight registers are programmed 9170 * with the number of 16-byte blocks a command of that size requires. 9171 * The smallest command possible requires 5 such 16 byte blocks. 9172 * the largest command possible requires SG_ENTRIES_IN_CMD + 4 16-byte 9173 * blocks. Note, this only extends to the SG entries contained 9174 * within the command block, and does not extend to chained blocks 9175 * of SG elements. bft[] contains the eight values we write to 9176 * the registers. They are not evenly distributed, but have more 9177 * sizes for small commands, and fewer sizes for larger commands. 9178 */ 9179 int bft[8] = {5, 6, 8, 10, 12, 20, 28, SG_ENTRIES_IN_CMD + 4}; 9180 #define MIN_IOACCEL2_BFT_ENTRY 5 9181 #define HPSA_IOACCEL2_HEADER_SZ 4 9182 int bft2[16] = {MIN_IOACCEL2_BFT_ENTRY, 6, 7, 8, 9, 10, 11, 12, 9183 13, 14, 15, 16, 17, 18, 19, 9184 HPSA_IOACCEL2_HEADER_SZ + IOACCEL2_MAXSGENTRIES}; 9185 BUILD_BUG_ON(ARRAY_SIZE(bft2) != 16); 9186 BUILD_BUG_ON(ARRAY_SIZE(bft) != 8); 9187 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, sg) > 9188 16 * MIN_IOACCEL2_BFT_ENTRY); 9189 BUILD_BUG_ON(sizeof(struct ioaccel2_sg_element) != 16); 9190 BUILD_BUG_ON(28 > SG_ENTRIES_IN_CMD + 4); 9191 /* 5 = 1 s/g entry or 4k 9192 * 6 = 2 s/g entry or 8k 9193 * 8 = 4 s/g entry or 16k 9194 * 10 = 6 s/g entry or 24k 9195 */ 9196 9197 /* If the controller supports either ioaccel method then 9198 * we can also use the RAID stack submit path that does not 9199 * perform the superfluous readl() after each command submission. 9200 */ 9201 if (trans_support & (CFGTBL_Trans_io_accel1 | CFGTBL_Trans_io_accel2)) 9202 access = SA5_performant_access_no_read; 9203 9204 /* Controller spec: zero out this buffer. */ 9205 for (i = 0; i < h->nreply_queues; i++) 9206 memset(h->reply_queue[i].head, 0, h->reply_queue_size); 9207 9208 bft[7] = SG_ENTRIES_IN_CMD + 4; 9209 calc_bucket_map(bft, ARRAY_SIZE(bft), 9210 SG_ENTRIES_IN_CMD, 4, h->blockFetchTable); 9211 for (i = 0; i < 8; i++) 9212 writel(bft[i], &h->transtable->BlockFetch[i]); 9213 9214 /* size of controller ring buffer */ 9215 writel(h->max_commands, &h->transtable->RepQSize); 9216 writel(h->nreply_queues, &h->transtable->RepQCount); 9217 writel(0, &h->transtable->RepQCtrAddrLow32); 9218 writel(0, &h->transtable->RepQCtrAddrHigh32); 9219 9220 for (i = 0; i < h->nreply_queues; i++) { 9221 writel(0, &h->transtable->RepQAddr[i].upper); 9222 writel(h->reply_queue[i].busaddr, 9223 &h->transtable->RepQAddr[i].lower); 9224 } 9225 9226 writel(0, &h->cfgtable->HostWrite.command_pool_addr_hi); 9227 writel(transMethod, &(h->cfgtable->HostWrite.TransportRequest)); 9228 /* 9229 * enable outbound interrupt coalescing in accelerator mode; 9230 */ 9231 if (trans_support & CFGTBL_Trans_io_accel1) { 9232 access = SA5_ioaccel_mode1_access; 9233 writel(10, &h->cfgtable->HostWrite.CoalIntDelay); 9234 writel(4, &h->cfgtable->HostWrite.CoalIntCount); 9235 } else 9236 if (trans_support & CFGTBL_Trans_io_accel2) 9237 access = SA5_ioaccel_mode2_access; 9238 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); 9239 if (hpsa_wait_for_mode_change_ack(h)) { 9240 dev_err(&h->pdev->dev, 9241 "performant mode problem - doorbell timeout\n"); 9242 return -ENODEV; 9243 } 9244 register_value = readl(&(h->cfgtable->TransportActive)); 9245 if (!(register_value & CFGTBL_Trans_Performant)) { 9246 dev_err(&h->pdev->dev, 9247 "performant mode problem - transport not active\n"); 9248 return -ENODEV; 9249 } 9250 /* Change the access methods to the performant access methods */ 9251 h->access = access; 9252 h->transMethod = transMethod; 9253 9254 if (!((trans_support & CFGTBL_Trans_io_accel1) || 9255 (trans_support & CFGTBL_Trans_io_accel2))) 9256 return 0; 9257 9258 if (trans_support & CFGTBL_Trans_io_accel1) { 9259 /* Set up I/O accelerator mode */ 9260 for (i = 0; i < h->nreply_queues; i++) { 9261 writel(i, h->vaddr + IOACCEL_MODE1_REPLY_QUEUE_INDEX); 9262 h->reply_queue[i].current_entry = 9263 readl(h->vaddr + IOACCEL_MODE1_PRODUCER_INDEX); 9264 } 9265 bft[7] = h->ioaccel_maxsg + 8; 9266 calc_bucket_map(bft, ARRAY_SIZE(bft), h->ioaccel_maxsg, 8, 9267 h->ioaccel1_blockFetchTable); 9268 9269 /* initialize all reply queue entries to unused */ 9270 for (i = 0; i < h->nreply_queues; i++) 9271 memset(h->reply_queue[i].head, 9272 (u8) IOACCEL_MODE1_REPLY_UNUSED, 9273 h->reply_queue_size); 9274 9275 /* set all the constant fields in the accelerator command 9276 * frames once at init time to save CPU cycles later. 9277 */ 9278 for (i = 0; i < h->nr_cmds; i++) { 9279 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[i]; 9280 9281 cp->function = IOACCEL1_FUNCTION_SCSIIO; 9282 cp->err_info = (u32) (h->errinfo_pool_dhandle + 9283 (i * sizeof(struct ErrorInfo))); 9284 cp->err_info_len = sizeof(struct ErrorInfo); 9285 cp->sgl_offset = IOACCEL1_SGLOFFSET; 9286 cp->host_context_flags = 9287 cpu_to_le16(IOACCEL1_HCFLAGS_CISS_FORMAT); 9288 cp->timeout_sec = 0; 9289 cp->ReplyQueue = 0; 9290 cp->tag = 9291 cpu_to_le64((i << DIRECT_LOOKUP_SHIFT)); 9292 cp->host_addr = 9293 cpu_to_le64(h->ioaccel_cmd_pool_dhandle + 9294 (i * sizeof(struct io_accel1_cmd))); 9295 } 9296 } else if (trans_support & CFGTBL_Trans_io_accel2) { 9297 u64 cfg_offset, cfg_base_addr_index; 9298 u32 bft2_offset, cfg_base_addr; 9299 int rc; 9300 9301 rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr, 9302 &cfg_base_addr_index, &cfg_offset); 9303 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, sg) != 64); 9304 bft2[15] = h->ioaccel_maxsg + HPSA_IOACCEL2_HEADER_SZ; 9305 calc_bucket_map(bft2, ARRAY_SIZE(bft2), h->ioaccel_maxsg, 9306 4, h->ioaccel2_blockFetchTable); 9307 bft2_offset = readl(&h->cfgtable->io_accel_request_size_offset); 9308 BUILD_BUG_ON(offsetof(struct CfgTable, 9309 io_accel_request_size_offset) != 0xb8); 9310 h->ioaccel2_bft2_regs = 9311 remap_pci_mem(pci_resource_start(h->pdev, 9312 cfg_base_addr_index) + 9313 cfg_offset + bft2_offset, 9314 ARRAY_SIZE(bft2) * 9315 sizeof(*h->ioaccel2_bft2_regs)); 9316 for (i = 0; i < ARRAY_SIZE(bft2); i++) 9317 writel(bft2[i], &h->ioaccel2_bft2_regs[i]); 9318 } 9319 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); 9320 if (hpsa_wait_for_mode_change_ack(h)) { 9321 dev_err(&h->pdev->dev, 9322 "performant mode problem - enabling ioaccel mode\n"); 9323 return -ENODEV; 9324 } 9325 return 0; 9326 } 9327 9328 /* Free ioaccel1 mode command blocks and block fetch table */ 9329 static void hpsa_free_ioaccel1_cmd_and_bft(struct ctlr_info *h) 9330 { 9331 if (h->ioaccel_cmd_pool) { 9332 pci_free_consistent(h->pdev, 9333 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool), 9334 h->ioaccel_cmd_pool, 9335 h->ioaccel_cmd_pool_dhandle); 9336 h->ioaccel_cmd_pool = NULL; 9337 h->ioaccel_cmd_pool_dhandle = 0; 9338 } 9339 kfree(h->ioaccel1_blockFetchTable); 9340 h->ioaccel1_blockFetchTable = NULL; 9341 } 9342 9343 /* Allocate ioaccel1 mode command blocks and block fetch table */ 9344 static int hpsa_alloc_ioaccel1_cmd_and_bft(struct ctlr_info *h) 9345 { 9346 h->ioaccel_maxsg = 9347 readl(&(h->cfgtable->io_accel_max_embedded_sg_count)); 9348 if (h->ioaccel_maxsg > IOACCEL1_MAXSGENTRIES) 9349 h->ioaccel_maxsg = IOACCEL1_MAXSGENTRIES; 9350 9351 /* Command structures must be aligned on a 128-byte boundary 9352 * because the 7 lower bits of the address are used by the 9353 * hardware. 9354 */ 9355 BUILD_BUG_ON(sizeof(struct io_accel1_cmd) % 9356 IOACCEL1_COMMANDLIST_ALIGNMENT); 9357 h->ioaccel_cmd_pool = 9358 dma_alloc_coherent(&h->pdev->dev, 9359 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool), 9360 &h->ioaccel_cmd_pool_dhandle, GFP_KERNEL); 9361 9362 h->ioaccel1_blockFetchTable = 9363 kmalloc(((h->ioaccel_maxsg + 1) * 9364 sizeof(u32)), GFP_KERNEL); 9365 9366 if ((h->ioaccel_cmd_pool == NULL) || 9367 (h->ioaccel1_blockFetchTable == NULL)) 9368 goto clean_up; 9369 9370 memset(h->ioaccel_cmd_pool, 0, 9371 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool)); 9372 return 0; 9373 9374 clean_up: 9375 hpsa_free_ioaccel1_cmd_and_bft(h); 9376 return -ENOMEM; 9377 } 9378 9379 /* Free ioaccel2 mode command blocks and block fetch table */ 9380 static void hpsa_free_ioaccel2_cmd_and_bft(struct ctlr_info *h) 9381 { 9382 hpsa_free_ioaccel2_sg_chain_blocks(h); 9383 9384 if (h->ioaccel2_cmd_pool) { 9385 pci_free_consistent(h->pdev, 9386 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool), 9387 h->ioaccel2_cmd_pool, 9388 h->ioaccel2_cmd_pool_dhandle); 9389 h->ioaccel2_cmd_pool = NULL; 9390 h->ioaccel2_cmd_pool_dhandle = 0; 9391 } 9392 kfree(h->ioaccel2_blockFetchTable); 9393 h->ioaccel2_blockFetchTable = NULL; 9394 } 9395 9396 /* Allocate ioaccel2 mode command blocks and block fetch table */ 9397 static int hpsa_alloc_ioaccel2_cmd_and_bft(struct ctlr_info *h) 9398 { 9399 int rc; 9400 9401 /* Allocate ioaccel2 mode command blocks and block fetch table */ 9402 9403 h->ioaccel_maxsg = 9404 readl(&(h->cfgtable->io_accel_max_embedded_sg_count)); 9405 if (h->ioaccel_maxsg > IOACCEL2_MAXSGENTRIES) 9406 h->ioaccel_maxsg = IOACCEL2_MAXSGENTRIES; 9407 9408 BUILD_BUG_ON(sizeof(struct io_accel2_cmd) % 9409 IOACCEL2_COMMANDLIST_ALIGNMENT); 9410 h->ioaccel2_cmd_pool = 9411 dma_alloc_coherent(&h->pdev->dev, 9412 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool), 9413 &h->ioaccel2_cmd_pool_dhandle, GFP_KERNEL); 9414 9415 h->ioaccel2_blockFetchTable = 9416 kmalloc(((h->ioaccel_maxsg + 1) * 9417 sizeof(u32)), GFP_KERNEL); 9418 9419 if ((h->ioaccel2_cmd_pool == NULL) || 9420 (h->ioaccel2_blockFetchTable == NULL)) { 9421 rc = -ENOMEM; 9422 goto clean_up; 9423 } 9424 9425 rc = hpsa_allocate_ioaccel2_sg_chain_blocks(h); 9426 if (rc) 9427 goto clean_up; 9428 9429 memset(h->ioaccel2_cmd_pool, 0, 9430 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool)); 9431 return 0; 9432 9433 clean_up: 9434 hpsa_free_ioaccel2_cmd_and_bft(h); 9435 return rc; 9436 } 9437 9438 /* Free items allocated by hpsa_put_ctlr_into_performant_mode */ 9439 static void hpsa_free_performant_mode(struct ctlr_info *h) 9440 { 9441 kfree(h->blockFetchTable); 9442 h->blockFetchTable = NULL; 9443 hpsa_free_reply_queues(h); 9444 hpsa_free_ioaccel1_cmd_and_bft(h); 9445 hpsa_free_ioaccel2_cmd_and_bft(h); 9446 } 9447 9448 /* return -ENODEV on error, 0 on success (or no action) 9449 * allocates numerous items that must be freed later 9450 */ 9451 static int hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h) 9452 { 9453 u32 trans_support; 9454 unsigned long transMethod = CFGTBL_Trans_Performant | 9455 CFGTBL_Trans_use_short_tags; 9456 int i, rc; 9457 9458 if (hpsa_simple_mode) 9459 return 0; 9460 9461 trans_support = readl(&(h->cfgtable->TransportSupport)); 9462 if (!(trans_support & PERFORMANT_MODE)) 9463 return 0; 9464 9465 /* Check for I/O accelerator mode support */ 9466 if (trans_support & CFGTBL_Trans_io_accel1) { 9467 transMethod |= CFGTBL_Trans_io_accel1 | 9468 CFGTBL_Trans_enable_directed_msix; 9469 rc = hpsa_alloc_ioaccel1_cmd_and_bft(h); 9470 if (rc) 9471 return rc; 9472 } else if (trans_support & CFGTBL_Trans_io_accel2) { 9473 transMethod |= CFGTBL_Trans_io_accel2 | 9474 CFGTBL_Trans_enable_directed_msix; 9475 rc = hpsa_alloc_ioaccel2_cmd_and_bft(h); 9476 if (rc) 9477 return rc; 9478 } 9479 9480 h->nreply_queues = h->msix_vectors > 0 ? h->msix_vectors : 1; 9481 hpsa_get_max_perf_mode_cmds(h); 9482 /* Performant mode ring buffer and supporting data structures */ 9483 h->reply_queue_size = h->max_commands * sizeof(u64); 9484 9485 for (i = 0; i < h->nreply_queues; i++) { 9486 h->reply_queue[i].head = dma_alloc_coherent(&h->pdev->dev, 9487 h->reply_queue_size, 9488 &h->reply_queue[i].busaddr, 9489 GFP_KERNEL); 9490 if (!h->reply_queue[i].head) { 9491 rc = -ENOMEM; 9492 goto clean1; /* rq, ioaccel */ 9493 } 9494 h->reply_queue[i].size = h->max_commands; 9495 h->reply_queue[i].wraparound = 1; /* spec: init to 1 */ 9496 h->reply_queue[i].current_entry = 0; 9497 } 9498 9499 /* Need a block fetch table for performant mode */ 9500 h->blockFetchTable = kmalloc(((SG_ENTRIES_IN_CMD + 1) * 9501 sizeof(u32)), GFP_KERNEL); 9502 if (!h->blockFetchTable) { 9503 rc = -ENOMEM; 9504 goto clean1; /* rq, ioaccel */ 9505 } 9506 9507 rc = hpsa_enter_performant_mode(h, trans_support); 9508 if (rc) 9509 goto clean2; /* bft, rq, ioaccel */ 9510 return 0; 9511 9512 clean2: /* bft, rq, ioaccel */ 9513 kfree(h->blockFetchTable); 9514 h->blockFetchTable = NULL; 9515 clean1: /* rq, ioaccel */ 9516 hpsa_free_reply_queues(h); 9517 hpsa_free_ioaccel1_cmd_and_bft(h); 9518 hpsa_free_ioaccel2_cmd_and_bft(h); 9519 return rc; 9520 } 9521 9522 static int is_accelerated_cmd(struct CommandList *c) 9523 { 9524 return c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_IOACCEL2; 9525 } 9526 9527 static void hpsa_drain_accel_commands(struct ctlr_info *h) 9528 { 9529 struct CommandList *c = NULL; 9530 int i, accel_cmds_out; 9531 int refcount; 9532 9533 do { /* wait for all outstanding ioaccel commands to drain out */ 9534 accel_cmds_out = 0; 9535 for (i = 0; i < h->nr_cmds; i++) { 9536 c = h->cmd_pool + i; 9537 refcount = atomic_inc_return(&c->refcount); 9538 if (refcount > 1) /* Command is allocated */ 9539 accel_cmds_out += is_accelerated_cmd(c); 9540 cmd_free(h, c); 9541 } 9542 if (accel_cmds_out <= 0) 9543 break; 9544 msleep(100); 9545 } while (1); 9546 } 9547 9548 static struct hpsa_sas_phy *hpsa_alloc_sas_phy( 9549 struct hpsa_sas_port *hpsa_sas_port) 9550 { 9551 struct hpsa_sas_phy *hpsa_sas_phy; 9552 struct sas_phy *phy; 9553 9554 hpsa_sas_phy = kzalloc(sizeof(*hpsa_sas_phy), GFP_KERNEL); 9555 if (!hpsa_sas_phy) 9556 return NULL; 9557 9558 phy = sas_phy_alloc(hpsa_sas_port->parent_node->parent_dev, 9559 hpsa_sas_port->next_phy_index); 9560 if (!phy) { 9561 kfree(hpsa_sas_phy); 9562 return NULL; 9563 } 9564 9565 hpsa_sas_port->next_phy_index++; 9566 hpsa_sas_phy->phy = phy; 9567 hpsa_sas_phy->parent_port = hpsa_sas_port; 9568 9569 return hpsa_sas_phy; 9570 } 9571 9572 static void hpsa_free_sas_phy(struct hpsa_sas_phy *hpsa_sas_phy) 9573 { 9574 struct sas_phy *phy = hpsa_sas_phy->phy; 9575 9576 sas_port_delete_phy(hpsa_sas_phy->parent_port->port, phy); 9577 if (hpsa_sas_phy->added_to_port) 9578 list_del(&hpsa_sas_phy->phy_list_entry); 9579 sas_phy_delete(phy); 9580 kfree(hpsa_sas_phy); 9581 } 9582 9583 static int hpsa_sas_port_add_phy(struct hpsa_sas_phy *hpsa_sas_phy) 9584 { 9585 int rc; 9586 struct hpsa_sas_port *hpsa_sas_port; 9587 struct sas_phy *phy; 9588 struct sas_identify *identify; 9589 9590 hpsa_sas_port = hpsa_sas_phy->parent_port; 9591 phy = hpsa_sas_phy->phy; 9592 9593 identify = &phy->identify; 9594 memset(identify, 0, sizeof(*identify)); 9595 identify->sas_address = hpsa_sas_port->sas_address; 9596 identify->device_type = SAS_END_DEVICE; 9597 identify->initiator_port_protocols = SAS_PROTOCOL_STP; 9598 identify->target_port_protocols = SAS_PROTOCOL_STP; 9599 phy->minimum_linkrate_hw = SAS_LINK_RATE_UNKNOWN; 9600 phy->maximum_linkrate_hw = SAS_LINK_RATE_UNKNOWN; 9601 phy->minimum_linkrate = SAS_LINK_RATE_UNKNOWN; 9602 phy->maximum_linkrate = SAS_LINK_RATE_UNKNOWN; 9603 phy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN; 9604 9605 rc = sas_phy_add(hpsa_sas_phy->phy); 9606 if (rc) 9607 return rc; 9608 9609 sas_port_add_phy(hpsa_sas_port->port, hpsa_sas_phy->phy); 9610 list_add_tail(&hpsa_sas_phy->phy_list_entry, 9611 &hpsa_sas_port->phy_list_head); 9612 hpsa_sas_phy->added_to_port = true; 9613 9614 return 0; 9615 } 9616 9617 static int 9618 hpsa_sas_port_add_rphy(struct hpsa_sas_port *hpsa_sas_port, 9619 struct sas_rphy *rphy) 9620 { 9621 struct sas_identify *identify; 9622 9623 identify = &rphy->identify; 9624 identify->sas_address = hpsa_sas_port->sas_address; 9625 identify->initiator_port_protocols = SAS_PROTOCOL_STP; 9626 identify->target_port_protocols = SAS_PROTOCOL_STP; 9627 9628 return sas_rphy_add(rphy); 9629 } 9630 9631 static struct hpsa_sas_port 9632 *hpsa_alloc_sas_port(struct hpsa_sas_node *hpsa_sas_node, 9633 u64 sas_address) 9634 { 9635 int rc; 9636 struct hpsa_sas_port *hpsa_sas_port; 9637 struct sas_port *port; 9638 9639 hpsa_sas_port = kzalloc(sizeof(*hpsa_sas_port), GFP_KERNEL); 9640 if (!hpsa_sas_port) 9641 return NULL; 9642 9643 INIT_LIST_HEAD(&hpsa_sas_port->phy_list_head); 9644 hpsa_sas_port->parent_node = hpsa_sas_node; 9645 9646 port = sas_port_alloc_num(hpsa_sas_node->parent_dev); 9647 if (!port) 9648 goto free_hpsa_port; 9649 9650 rc = sas_port_add(port); 9651 if (rc) 9652 goto free_sas_port; 9653 9654 hpsa_sas_port->port = port; 9655 hpsa_sas_port->sas_address = sas_address; 9656 list_add_tail(&hpsa_sas_port->port_list_entry, 9657 &hpsa_sas_node->port_list_head); 9658 9659 return hpsa_sas_port; 9660 9661 free_sas_port: 9662 sas_port_free(port); 9663 free_hpsa_port: 9664 kfree(hpsa_sas_port); 9665 9666 return NULL; 9667 } 9668 9669 static void hpsa_free_sas_port(struct hpsa_sas_port *hpsa_sas_port) 9670 { 9671 struct hpsa_sas_phy *hpsa_sas_phy; 9672 struct hpsa_sas_phy *next; 9673 9674 list_for_each_entry_safe(hpsa_sas_phy, next, 9675 &hpsa_sas_port->phy_list_head, phy_list_entry) 9676 hpsa_free_sas_phy(hpsa_sas_phy); 9677 9678 sas_port_delete(hpsa_sas_port->port); 9679 list_del(&hpsa_sas_port->port_list_entry); 9680 kfree(hpsa_sas_port); 9681 } 9682 9683 static struct hpsa_sas_node *hpsa_alloc_sas_node(struct device *parent_dev) 9684 { 9685 struct hpsa_sas_node *hpsa_sas_node; 9686 9687 hpsa_sas_node = kzalloc(sizeof(*hpsa_sas_node), GFP_KERNEL); 9688 if (hpsa_sas_node) { 9689 hpsa_sas_node->parent_dev = parent_dev; 9690 INIT_LIST_HEAD(&hpsa_sas_node->port_list_head); 9691 } 9692 9693 return hpsa_sas_node; 9694 } 9695 9696 static void hpsa_free_sas_node(struct hpsa_sas_node *hpsa_sas_node) 9697 { 9698 struct hpsa_sas_port *hpsa_sas_port; 9699 struct hpsa_sas_port *next; 9700 9701 if (!hpsa_sas_node) 9702 return; 9703 9704 list_for_each_entry_safe(hpsa_sas_port, next, 9705 &hpsa_sas_node->port_list_head, port_list_entry) 9706 hpsa_free_sas_port(hpsa_sas_port); 9707 9708 kfree(hpsa_sas_node); 9709 } 9710 9711 static struct hpsa_scsi_dev_t 9712 *hpsa_find_device_by_sas_rphy(struct ctlr_info *h, 9713 struct sas_rphy *rphy) 9714 { 9715 int i; 9716 struct hpsa_scsi_dev_t *device; 9717 9718 for (i = 0; i < h->ndevices; i++) { 9719 device = h->dev[i]; 9720 if (!device->sas_port) 9721 continue; 9722 if (device->sas_port->rphy == rphy) 9723 return device; 9724 } 9725 9726 return NULL; 9727 } 9728 9729 static int hpsa_add_sas_host(struct ctlr_info *h) 9730 { 9731 int rc; 9732 struct device *parent_dev; 9733 struct hpsa_sas_node *hpsa_sas_node; 9734 struct hpsa_sas_port *hpsa_sas_port; 9735 struct hpsa_sas_phy *hpsa_sas_phy; 9736 9737 parent_dev = &h->scsi_host->shost_dev; 9738 9739 hpsa_sas_node = hpsa_alloc_sas_node(parent_dev); 9740 if (!hpsa_sas_node) 9741 return -ENOMEM; 9742 9743 hpsa_sas_port = hpsa_alloc_sas_port(hpsa_sas_node, h->sas_address); 9744 if (!hpsa_sas_port) { 9745 rc = -ENODEV; 9746 goto free_sas_node; 9747 } 9748 9749 hpsa_sas_phy = hpsa_alloc_sas_phy(hpsa_sas_port); 9750 if (!hpsa_sas_phy) { 9751 rc = -ENODEV; 9752 goto free_sas_port; 9753 } 9754 9755 rc = hpsa_sas_port_add_phy(hpsa_sas_phy); 9756 if (rc) 9757 goto free_sas_phy; 9758 9759 h->sas_host = hpsa_sas_node; 9760 9761 return 0; 9762 9763 free_sas_phy: 9764 hpsa_free_sas_phy(hpsa_sas_phy); 9765 free_sas_port: 9766 hpsa_free_sas_port(hpsa_sas_port); 9767 free_sas_node: 9768 hpsa_free_sas_node(hpsa_sas_node); 9769 9770 return rc; 9771 } 9772 9773 static void hpsa_delete_sas_host(struct ctlr_info *h) 9774 { 9775 hpsa_free_sas_node(h->sas_host); 9776 } 9777 9778 static int hpsa_add_sas_device(struct hpsa_sas_node *hpsa_sas_node, 9779 struct hpsa_scsi_dev_t *device) 9780 { 9781 int rc; 9782 struct hpsa_sas_port *hpsa_sas_port; 9783 struct sas_rphy *rphy; 9784 9785 hpsa_sas_port = hpsa_alloc_sas_port(hpsa_sas_node, device->sas_address); 9786 if (!hpsa_sas_port) 9787 return -ENOMEM; 9788 9789 rphy = sas_end_device_alloc(hpsa_sas_port->port); 9790 if (!rphy) { 9791 rc = -ENODEV; 9792 goto free_sas_port; 9793 } 9794 9795 hpsa_sas_port->rphy = rphy; 9796 device->sas_port = hpsa_sas_port; 9797 9798 rc = hpsa_sas_port_add_rphy(hpsa_sas_port, rphy); 9799 if (rc) 9800 goto free_sas_port; 9801 9802 return 0; 9803 9804 free_sas_port: 9805 hpsa_free_sas_port(hpsa_sas_port); 9806 device->sas_port = NULL; 9807 9808 return rc; 9809 } 9810 9811 static void hpsa_remove_sas_device(struct hpsa_scsi_dev_t *device) 9812 { 9813 if (device->sas_port) { 9814 hpsa_free_sas_port(device->sas_port); 9815 device->sas_port = NULL; 9816 } 9817 } 9818 9819 static int 9820 hpsa_sas_get_linkerrors(struct sas_phy *phy) 9821 { 9822 return 0; 9823 } 9824 9825 static int 9826 hpsa_sas_get_enclosure_identifier(struct sas_rphy *rphy, u64 *identifier) 9827 { 9828 struct Scsi_Host *shost = phy_to_shost(rphy); 9829 struct ctlr_info *h; 9830 struct hpsa_scsi_dev_t *sd; 9831 9832 if (!shost) 9833 return -ENXIO; 9834 9835 h = shost_to_hba(shost); 9836 9837 if (!h) 9838 return -ENXIO; 9839 9840 sd = hpsa_find_device_by_sas_rphy(h, rphy); 9841 if (!sd) 9842 return -ENXIO; 9843 9844 *identifier = sd->eli; 9845 9846 return 0; 9847 } 9848 9849 static int 9850 hpsa_sas_get_bay_identifier(struct sas_rphy *rphy) 9851 { 9852 return -ENXIO; 9853 } 9854 9855 static int 9856 hpsa_sas_phy_reset(struct sas_phy *phy, int hard_reset) 9857 { 9858 return 0; 9859 } 9860 9861 static int 9862 hpsa_sas_phy_enable(struct sas_phy *phy, int enable) 9863 { 9864 return 0; 9865 } 9866 9867 static int 9868 hpsa_sas_phy_setup(struct sas_phy *phy) 9869 { 9870 return 0; 9871 } 9872 9873 static void 9874 hpsa_sas_phy_release(struct sas_phy *phy) 9875 { 9876 } 9877 9878 static int 9879 hpsa_sas_phy_speed(struct sas_phy *phy, struct sas_phy_linkrates *rates) 9880 { 9881 return -EINVAL; 9882 } 9883 9884 static struct sas_function_template hpsa_sas_transport_functions = { 9885 .get_linkerrors = hpsa_sas_get_linkerrors, 9886 .get_enclosure_identifier = hpsa_sas_get_enclosure_identifier, 9887 .get_bay_identifier = hpsa_sas_get_bay_identifier, 9888 .phy_reset = hpsa_sas_phy_reset, 9889 .phy_enable = hpsa_sas_phy_enable, 9890 .phy_setup = hpsa_sas_phy_setup, 9891 .phy_release = hpsa_sas_phy_release, 9892 .set_phy_speed = hpsa_sas_phy_speed, 9893 }; 9894 9895 /* 9896 * This is it. Register the PCI driver information for the cards we control 9897 * the OS will call our registered routines when it finds one of our cards. 9898 */ 9899 static int __init hpsa_init(void) 9900 { 9901 int rc; 9902 9903 hpsa_sas_transport_template = 9904 sas_attach_transport(&hpsa_sas_transport_functions); 9905 if (!hpsa_sas_transport_template) 9906 return -ENODEV; 9907 9908 rc = pci_register_driver(&hpsa_pci_driver); 9909 9910 if (rc) 9911 sas_release_transport(hpsa_sas_transport_template); 9912 9913 return rc; 9914 } 9915 9916 static void __exit hpsa_cleanup(void) 9917 { 9918 pci_unregister_driver(&hpsa_pci_driver); 9919 sas_release_transport(hpsa_sas_transport_template); 9920 } 9921 9922 static void __attribute__((unused)) verify_offsets(void) 9923 { 9924 #define VERIFY_OFFSET(member, offset) \ 9925 BUILD_BUG_ON(offsetof(struct raid_map_data, member) != offset) 9926 9927 VERIFY_OFFSET(structure_size, 0); 9928 VERIFY_OFFSET(volume_blk_size, 4); 9929 VERIFY_OFFSET(volume_blk_cnt, 8); 9930 VERIFY_OFFSET(phys_blk_shift, 16); 9931 VERIFY_OFFSET(parity_rotation_shift, 17); 9932 VERIFY_OFFSET(strip_size, 18); 9933 VERIFY_OFFSET(disk_starting_blk, 20); 9934 VERIFY_OFFSET(disk_blk_cnt, 28); 9935 VERIFY_OFFSET(data_disks_per_row, 36); 9936 VERIFY_OFFSET(metadata_disks_per_row, 38); 9937 VERIFY_OFFSET(row_cnt, 40); 9938 VERIFY_OFFSET(layout_map_count, 42); 9939 VERIFY_OFFSET(flags, 44); 9940 VERIFY_OFFSET(dekindex, 46); 9941 /* VERIFY_OFFSET(reserved, 48 */ 9942 VERIFY_OFFSET(data, 64); 9943 9944 #undef VERIFY_OFFSET 9945 9946 #define VERIFY_OFFSET(member, offset) \ 9947 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, member) != offset) 9948 9949 VERIFY_OFFSET(IU_type, 0); 9950 VERIFY_OFFSET(direction, 1); 9951 VERIFY_OFFSET(reply_queue, 2); 9952 /* VERIFY_OFFSET(reserved1, 3); */ 9953 VERIFY_OFFSET(scsi_nexus, 4); 9954 VERIFY_OFFSET(Tag, 8); 9955 VERIFY_OFFSET(cdb, 16); 9956 VERIFY_OFFSET(cciss_lun, 32); 9957 VERIFY_OFFSET(data_len, 40); 9958 VERIFY_OFFSET(cmd_priority_task_attr, 44); 9959 VERIFY_OFFSET(sg_count, 45); 9960 /* VERIFY_OFFSET(reserved3 */ 9961 VERIFY_OFFSET(err_ptr, 48); 9962 VERIFY_OFFSET(err_len, 56); 9963 /* VERIFY_OFFSET(reserved4 */ 9964 VERIFY_OFFSET(sg, 64); 9965 9966 #undef VERIFY_OFFSET 9967 9968 #define VERIFY_OFFSET(member, offset) \ 9969 BUILD_BUG_ON(offsetof(struct io_accel1_cmd, member) != offset) 9970 9971 VERIFY_OFFSET(dev_handle, 0x00); 9972 VERIFY_OFFSET(reserved1, 0x02); 9973 VERIFY_OFFSET(function, 0x03); 9974 VERIFY_OFFSET(reserved2, 0x04); 9975 VERIFY_OFFSET(err_info, 0x0C); 9976 VERIFY_OFFSET(reserved3, 0x10); 9977 VERIFY_OFFSET(err_info_len, 0x12); 9978 VERIFY_OFFSET(reserved4, 0x13); 9979 VERIFY_OFFSET(sgl_offset, 0x14); 9980 VERIFY_OFFSET(reserved5, 0x15); 9981 VERIFY_OFFSET(transfer_len, 0x1C); 9982 VERIFY_OFFSET(reserved6, 0x20); 9983 VERIFY_OFFSET(io_flags, 0x24); 9984 VERIFY_OFFSET(reserved7, 0x26); 9985 VERIFY_OFFSET(LUN, 0x34); 9986 VERIFY_OFFSET(control, 0x3C); 9987 VERIFY_OFFSET(CDB, 0x40); 9988 VERIFY_OFFSET(reserved8, 0x50); 9989 VERIFY_OFFSET(host_context_flags, 0x60); 9990 VERIFY_OFFSET(timeout_sec, 0x62); 9991 VERIFY_OFFSET(ReplyQueue, 0x64); 9992 VERIFY_OFFSET(reserved9, 0x65); 9993 VERIFY_OFFSET(tag, 0x68); 9994 VERIFY_OFFSET(host_addr, 0x70); 9995 VERIFY_OFFSET(CISS_LUN, 0x78); 9996 VERIFY_OFFSET(SG, 0x78 + 8); 9997 #undef VERIFY_OFFSET 9998 } 9999 10000 module_init(hpsa_init); 10001 module_exit(hpsa_cleanup); 10002