1 /* 2 * Disk Array driver for HP Smart Array SAS controllers 3 * Copyright (c) 2019-2020 Microchip Technology Inc. and its subsidiaries 4 * Copyright 2016 Microsemi Corporation 5 * Copyright 2014-2015 PMC-Sierra, Inc. 6 * Copyright 2000,2009-2015 Hewlett-Packard Development Company, L.P. 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; version 2 of the License. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or 15 * NON INFRINGEMENT. See the GNU General Public License for more details. 16 * 17 * Questions/Comments/Bugfixes to esc.storagedev@microsemi.com 18 * 19 */ 20 21 #include <linux/module.h> 22 #include <linux/interrupt.h> 23 #include <linux/types.h> 24 #include <linux/pci.h> 25 #include <linux/kernel.h> 26 #include <linux/slab.h> 27 #include <linux/delay.h> 28 #include <linux/fs.h> 29 #include <linux/timer.h> 30 #include <linux/init.h> 31 #include <linux/spinlock.h> 32 #include <linux/compat.h> 33 #include <linux/blktrace_api.h> 34 #include <linux/uaccess.h> 35 #include <linux/io.h> 36 #include <linux/dma-mapping.h> 37 #include <linux/completion.h> 38 #include <linux/moduleparam.h> 39 #include <scsi/scsi.h> 40 #include <scsi/scsi_cmnd.h> 41 #include <scsi/scsi_device.h> 42 #include <scsi/scsi_host.h> 43 #include <scsi/scsi_tcq.h> 44 #include <scsi/scsi_eh.h> 45 #include <scsi/scsi_transport_sas.h> 46 #include <scsi/scsi_dbg.h> 47 #include <linux/cciss_ioctl.h> 48 #include <linux/string.h> 49 #include <linux/bitmap.h> 50 #include <linux/atomic.h> 51 #include <linux/jiffies.h> 52 #include <linux/percpu-defs.h> 53 #include <linux/percpu.h> 54 #include <asm/unaligned.h> 55 #include <asm/div64.h> 56 #include "hpsa_cmd.h" 57 #include "hpsa.h" 58 59 /* 60 * HPSA_DRIVER_VERSION must be 3 byte values (0-255) separated by '.' 61 * with an optional trailing '-' followed by a byte value (0-255). 62 */ 63 #define HPSA_DRIVER_VERSION "3.4.20-200" 64 #define DRIVER_NAME "HP HPSA Driver (v " HPSA_DRIVER_VERSION ")" 65 #define HPSA "hpsa" 66 67 /* How long to wait for CISS doorbell communication */ 68 #define CLEAR_EVENT_WAIT_INTERVAL 20 /* ms for each msleep() call */ 69 #define MODE_CHANGE_WAIT_INTERVAL 10 /* ms for each msleep() call */ 70 #define MAX_CLEAR_EVENT_WAIT 30000 /* times 20 ms = 600 s */ 71 #define MAX_MODE_CHANGE_WAIT 2000 /* times 10 ms = 20 s */ 72 #define MAX_IOCTL_CONFIG_WAIT 1000 73 74 /*define how many times we will try a command because of bus resets */ 75 #define MAX_CMD_RETRIES 3 76 /* How long to wait before giving up on a command */ 77 #define HPSA_EH_PTRAID_TIMEOUT (240 * HZ) 78 79 /* Embedded module documentation macros - see modules.h */ 80 MODULE_AUTHOR("Hewlett-Packard Company"); 81 MODULE_DESCRIPTION("Driver for HP Smart Array Controller version " \ 82 HPSA_DRIVER_VERSION); 83 MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers"); 84 MODULE_VERSION(HPSA_DRIVER_VERSION); 85 MODULE_LICENSE("GPL"); 86 MODULE_ALIAS("cciss"); 87 88 static int hpsa_simple_mode; 89 module_param(hpsa_simple_mode, int, S_IRUGO|S_IWUSR); 90 MODULE_PARM_DESC(hpsa_simple_mode, 91 "Use 'simple mode' rather than 'performant mode'"); 92 93 /* define the PCI info for the cards we can control */ 94 static const struct pci_device_id hpsa_pci_device_id[] = { 95 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241}, 96 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243}, 97 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245}, 98 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247}, 99 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249}, 100 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324A}, 101 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324B}, 102 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3233}, 103 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3350}, 104 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3351}, 105 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3352}, 106 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3353}, 107 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3354}, 108 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3355}, 109 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3356}, 110 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103c, 0x1920}, 111 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1921}, 112 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1922}, 113 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1923}, 114 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1924}, 115 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103c, 0x1925}, 116 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1926}, 117 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1928}, 118 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1929}, 119 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21BD}, 120 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21BE}, 121 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21BF}, 122 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C0}, 123 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C1}, 124 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C2}, 125 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C3}, 126 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C4}, 127 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C5}, 128 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C6}, 129 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C7}, 130 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C8}, 131 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C9}, 132 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CA}, 133 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CB}, 134 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CC}, 135 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CD}, 136 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CE}, 137 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0580}, 138 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0581}, 139 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0582}, 140 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0583}, 141 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0584}, 142 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0585}, 143 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0076}, 144 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0087}, 145 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x007D}, 146 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0088}, 147 {PCI_VENDOR_ID_HP, 0x333f, 0x103c, 0x333f}, 148 {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, 149 PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0}, 150 {PCI_VENDOR_ID_COMPAQ, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, 151 PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0}, 152 {0,} 153 }; 154 155 MODULE_DEVICE_TABLE(pci, hpsa_pci_device_id); 156 157 /* board_id = Subsystem Device ID & Vendor ID 158 * product = Marketing Name for the board 159 * access = Address of the struct of function pointers 160 */ 161 static struct board_type products[] = { 162 {0x40700E11, "Smart Array 5300", &SA5A_access}, 163 {0x40800E11, "Smart Array 5i", &SA5B_access}, 164 {0x40820E11, "Smart Array 532", &SA5B_access}, 165 {0x40830E11, "Smart Array 5312", &SA5B_access}, 166 {0x409A0E11, "Smart Array 641", &SA5A_access}, 167 {0x409B0E11, "Smart Array 642", &SA5A_access}, 168 {0x409C0E11, "Smart Array 6400", &SA5A_access}, 169 {0x409D0E11, "Smart Array 6400 EM", &SA5A_access}, 170 {0x40910E11, "Smart Array 6i", &SA5A_access}, 171 {0x3225103C, "Smart Array P600", &SA5A_access}, 172 {0x3223103C, "Smart Array P800", &SA5A_access}, 173 {0x3234103C, "Smart Array P400", &SA5A_access}, 174 {0x3235103C, "Smart Array P400i", &SA5A_access}, 175 {0x3211103C, "Smart Array E200i", &SA5A_access}, 176 {0x3212103C, "Smart Array E200", &SA5A_access}, 177 {0x3213103C, "Smart Array E200i", &SA5A_access}, 178 {0x3214103C, "Smart Array E200i", &SA5A_access}, 179 {0x3215103C, "Smart Array E200i", &SA5A_access}, 180 {0x3237103C, "Smart Array E500", &SA5A_access}, 181 {0x323D103C, "Smart Array P700m", &SA5A_access}, 182 {0x3241103C, "Smart Array P212", &SA5_access}, 183 {0x3243103C, "Smart Array P410", &SA5_access}, 184 {0x3245103C, "Smart Array P410i", &SA5_access}, 185 {0x3247103C, "Smart Array P411", &SA5_access}, 186 {0x3249103C, "Smart Array P812", &SA5_access}, 187 {0x324A103C, "Smart Array P712m", &SA5_access}, 188 {0x324B103C, "Smart Array P711m", &SA5_access}, 189 {0x3233103C, "HP StorageWorks 1210m", &SA5_access}, /* alias of 333f */ 190 {0x3350103C, "Smart Array P222", &SA5_access}, 191 {0x3351103C, "Smart Array P420", &SA5_access}, 192 {0x3352103C, "Smart Array P421", &SA5_access}, 193 {0x3353103C, "Smart Array P822", &SA5_access}, 194 {0x3354103C, "Smart Array P420i", &SA5_access}, 195 {0x3355103C, "Smart Array P220i", &SA5_access}, 196 {0x3356103C, "Smart Array P721m", &SA5_access}, 197 {0x1920103C, "Smart Array P430i", &SA5_access}, 198 {0x1921103C, "Smart Array P830i", &SA5_access}, 199 {0x1922103C, "Smart Array P430", &SA5_access}, 200 {0x1923103C, "Smart Array P431", &SA5_access}, 201 {0x1924103C, "Smart Array P830", &SA5_access}, 202 {0x1925103C, "Smart Array P831", &SA5_access}, 203 {0x1926103C, "Smart Array P731m", &SA5_access}, 204 {0x1928103C, "Smart Array P230i", &SA5_access}, 205 {0x1929103C, "Smart Array P530", &SA5_access}, 206 {0x21BD103C, "Smart Array P244br", &SA5_access}, 207 {0x21BE103C, "Smart Array P741m", &SA5_access}, 208 {0x21BF103C, "Smart HBA H240ar", &SA5_access}, 209 {0x21C0103C, "Smart Array P440ar", &SA5_access}, 210 {0x21C1103C, "Smart Array P840ar", &SA5_access}, 211 {0x21C2103C, "Smart Array P440", &SA5_access}, 212 {0x21C3103C, "Smart Array P441", &SA5_access}, 213 {0x21C4103C, "Smart Array", &SA5_access}, 214 {0x21C5103C, "Smart Array P841", &SA5_access}, 215 {0x21C6103C, "Smart HBA H244br", &SA5_access}, 216 {0x21C7103C, "Smart HBA H240", &SA5_access}, 217 {0x21C8103C, "Smart HBA H241", &SA5_access}, 218 {0x21C9103C, "Smart Array", &SA5_access}, 219 {0x21CA103C, "Smart Array P246br", &SA5_access}, 220 {0x21CB103C, "Smart Array P840", &SA5_access}, 221 {0x21CC103C, "Smart Array", &SA5_access}, 222 {0x21CD103C, "Smart Array", &SA5_access}, 223 {0x21CE103C, "Smart HBA", &SA5_access}, 224 {0x05809005, "SmartHBA-SA", &SA5_access}, 225 {0x05819005, "SmartHBA-SA 8i", &SA5_access}, 226 {0x05829005, "SmartHBA-SA 8i8e", &SA5_access}, 227 {0x05839005, "SmartHBA-SA 8e", &SA5_access}, 228 {0x05849005, "SmartHBA-SA 16i", &SA5_access}, 229 {0x05859005, "SmartHBA-SA 4i4e", &SA5_access}, 230 {0x00761590, "HP Storage P1224 Array Controller", &SA5_access}, 231 {0x00871590, "HP Storage P1224e Array Controller", &SA5_access}, 232 {0x007D1590, "HP Storage P1228 Array Controller", &SA5_access}, 233 {0x00881590, "HP Storage P1228e Array Controller", &SA5_access}, 234 {0x333f103c, "HP StorageWorks 1210m Array Controller", &SA5_access}, 235 {0xFFFF103C, "Unknown Smart Array", &SA5_access}, 236 }; 237 238 static struct scsi_transport_template *hpsa_sas_transport_template; 239 static int hpsa_add_sas_host(struct ctlr_info *h); 240 static void hpsa_delete_sas_host(struct ctlr_info *h); 241 static int hpsa_add_sas_device(struct hpsa_sas_node *hpsa_sas_node, 242 struct hpsa_scsi_dev_t *device); 243 static void hpsa_remove_sas_device(struct hpsa_scsi_dev_t *device); 244 static struct hpsa_scsi_dev_t 245 *hpsa_find_device_by_sas_rphy(struct ctlr_info *h, 246 struct sas_rphy *rphy); 247 248 #define SCSI_CMD_BUSY ((struct scsi_cmnd *)&hpsa_cmd_busy) 249 static const struct scsi_cmnd hpsa_cmd_busy; 250 #define SCSI_CMD_IDLE ((struct scsi_cmnd *)&hpsa_cmd_idle) 251 static const struct scsi_cmnd hpsa_cmd_idle; 252 static int number_of_controllers; 253 254 static irqreturn_t do_hpsa_intr_intx(int irq, void *dev_id); 255 static irqreturn_t do_hpsa_intr_msi(int irq, void *dev_id); 256 static int hpsa_ioctl(struct scsi_device *dev, unsigned int cmd, 257 void __user *arg); 258 static int hpsa_passthru_ioctl(struct ctlr_info *h, 259 IOCTL_Command_struct *iocommand); 260 static int hpsa_big_passthru_ioctl(struct ctlr_info *h, 261 BIG_IOCTL_Command_struct *ioc); 262 263 #ifdef CONFIG_COMPAT 264 static int hpsa_compat_ioctl(struct scsi_device *dev, unsigned int cmd, 265 void __user *arg); 266 #endif 267 268 static void cmd_free(struct ctlr_info *h, struct CommandList *c); 269 static struct CommandList *cmd_alloc(struct ctlr_info *h); 270 static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c); 271 static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h, 272 struct scsi_cmnd *scmd); 273 static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h, 274 void *buff, size_t size, u16 page_code, unsigned char *scsi3addr, 275 int cmd_type); 276 static void hpsa_free_cmd_pool(struct ctlr_info *h); 277 #define VPD_PAGE (1 << 8) 278 #define HPSA_SIMPLE_ERROR_BITS 0x03 279 280 static int hpsa_scsi_queue_command(struct Scsi_Host *h, struct scsi_cmnd *cmd); 281 static void hpsa_scan_start(struct Scsi_Host *); 282 static int hpsa_scan_finished(struct Scsi_Host *sh, 283 unsigned long elapsed_time); 284 static int hpsa_change_queue_depth(struct scsi_device *sdev, int qdepth); 285 286 static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd); 287 static int hpsa_slave_alloc(struct scsi_device *sdev); 288 static int hpsa_slave_configure(struct scsi_device *sdev); 289 static void hpsa_slave_destroy(struct scsi_device *sdev); 290 291 static void hpsa_update_scsi_devices(struct ctlr_info *h); 292 static int check_for_unit_attention(struct ctlr_info *h, 293 struct CommandList *c); 294 static void check_ioctl_unit_attention(struct ctlr_info *h, 295 struct CommandList *c); 296 /* performant mode helper functions */ 297 static void calc_bucket_map(int *bucket, int num_buckets, 298 int nsgs, int min_blocks, u32 *bucket_map); 299 static void hpsa_free_performant_mode(struct ctlr_info *h); 300 static int hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h); 301 static inline u32 next_command(struct ctlr_info *h, u8 q); 302 static int hpsa_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr, 303 u32 *cfg_base_addr, u64 *cfg_base_addr_index, 304 u64 *cfg_offset); 305 static int hpsa_pci_find_memory_BAR(struct pci_dev *pdev, 306 unsigned long *memory_bar); 307 static int hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id, 308 bool *legacy_board); 309 static int wait_for_device_to_become_ready(struct ctlr_info *h, 310 unsigned char lunaddr[], 311 int reply_queue); 312 static int hpsa_wait_for_board_state(struct pci_dev *pdev, void __iomem *vaddr, 313 int wait_for_ready); 314 static inline void finish_cmd(struct CommandList *c); 315 static int hpsa_wait_for_mode_change_ack(struct ctlr_info *h); 316 #define BOARD_NOT_READY 0 317 #define BOARD_READY 1 318 static void hpsa_drain_accel_commands(struct ctlr_info *h); 319 static void hpsa_flush_cache(struct ctlr_info *h); 320 static int hpsa_scsi_ioaccel_queue_command(struct ctlr_info *h, 321 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len, 322 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk); 323 static void hpsa_command_resubmit_worker(struct work_struct *work); 324 static u32 lockup_detected(struct ctlr_info *h); 325 static int detect_controller_lockup(struct ctlr_info *h); 326 static void hpsa_disable_rld_caching(struct ctlr_info *h); 327 static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h, 328 struct ReportExtendedLUNdata *buf, int bufsize); 329 static bool hpsa_vpd_page_supported(struct ctlr_info *h, 330 unsigned char scsi3addr[], u8 page); 331 static int hpsa_luns_changed(struct ctlr_info *h); 332 static bool hpsa_cmd_dev_match(struct ctlr_info *h, struct CommandList *c, 333 struct hpsa_scsi_dev_t *dev, 334 unsigned char *scsi3addr); 335 336 static inline struct ctlr_info *sdev_to_hba(struct scsi_device *sdev) 337 { 338 unsigned long *priv = shost_priv(sdev->host); 339 return (struct ctlr_info *) *priv; 340 } 341 342 static inline struct ctlr_info *shost_to_hba(struct Scsi_Host *sh) 343 { 344 unsigned long *priv = shost_priv(sh); 345 return (struct ctlr_info *) *priv; 346 } 347 348 static inline bool hpsa_is_cmd_idle(struct CommandList *c) 349 { 350 return c->scsi_cmd == SCSI_CMD_IDLE; 351 } 352 353 /* extract sense key, asc, and ascq from sense data. -1 means invalid. */ 354 static void decode_sense_data(const u8 *sense_data, int sense_data_len, 355 u8 *sense_key, u8 *asc, u8 *ascq) 356 { 357 struct scsi_sense_hdr sshdr; 358 bool rc; 359 360 *sense_key = -1; 361 *asc = -1; 362 *ascq = -1; 363 364 if (sense_data_len < 1) 365 return; 366 367 rc = scsi_normalize_sense(sense_data, sense_data_len, &sshdr); 368 if (rc) { 369 *sense_key = sshdr.sense_key; 370 *asc = sshdr.asc; 371 *ascq = sshdr.ascq; 372 } 373 } 374 375 static int check_for_unit_attention(struct ctlr_info *h, 376 struct CommandList *c) 377 { 378 u8 sense_key, asc, ascq; 379 int sense_len; 380 381 if (c->err_info->SenseLen > sizeof(c->err_info->SenseInfo)) 382 sense_len = sizeof(c->err_info->SenseInfo); 383 else 384 sense_len = c->err_info->SenseLen; 385 386 decode_sense_data(c->err_info->SenseInfo, sense_len, 387 &sense_key, &asc, &ascq); 388 if (sense_key != UNIT_ATTENTION || asc == 0xff) 389 return 0; 390 391 switch (asc) { 392 case STATE_CHANGED: 393 dev_warn(&h->pdev->dev, 394 "%s: a state change detected, command retried\n", 395 h->devname); 396 break; 397 case LUN_FAILED: 398 dev_warn(&h->pdev->dev, 399 "%s: LUN failure detected\n", h->devname); 400 break; 401 case REPORT_LUNS_CHANGED: 402 dev_warn(&h->pdev->dev, 403 "%s: report LUN data changed\n", h->devname); 404 /* 405 * Note: this REPORT_LUNS_CHANGED condition only occurs on the external 406 * target (array) devices. 407 */ 408 break; 409 case POWER_OR_RESET: 410 dev_warn(&h->pdev->dev, 411 "%s: a power on or device reset detected\n", 412 h->devname); 413 break; 414 case UNIT_ATTENTION_CLEARED: 415 dev_warn(&h->pdev->dev, 416 "%s: unit attention cleared by another initiator\n", 417 h->devname); 418 break; 419 default: 420 dev_warn(&h->pdev->dev, 421 "%s: unknown unit attention detected\n", 422 h->devname); 423 break; 424 } 425 return 1; 426 } 427 428 static int check_for_busy(struct ctlr_info *h, struct CommandList *c) 429 { 430 if (c->err_info->CommandStatus != CMD_TARGET_STATUS || 431 (c->err_info->ScsiStatus != SAM_STAT_BUSY && 432 c->err_info->ScsiStatus != SAM_STAT_TASK_SET_FULL)) 433 return 0; 434 dev_warn(&h->pdev->dev, HPSA "device busy"); 435 return 1; 436 } 437 438 static u32 lockup_detected(struct ctlr_info *h); 439 static ssize_t host_show_lockup_detected(struct device *dev, 440 struct device_attribute *attr, char *buf) 441 { 442 int ld; 443 struct ctlr_info *h; 444 struct Scsi_Host *shost = class_to_shost(dev); 445 446 h = shost_to_hba(shost); 447 ld = lockup_detected(h); 448 449 return sprintf(buf, "ld=%d\n", ld); 450 } 451 452 static ssize_t host_store_hp_ssd_smart_path_status(struct device *dev, 453 struct device_attribute *attr, 454 const char *buf, size_t count) 455 { 456 int status, len; 457 struct ctlr_info *h; 458 struct Scsi_Host *shost = class_to_shost(dev); 459 char tmpbuf[10]; 460 461 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) 462 return -EACCES; 463 len = count > sizeof(tmpbuf) - 1 ? sizeof(tmpbuf) - 1 : count; 464 strncpy(tmpbuf, buf, len); 465 tmpbuf[len] = '\0'; 466 if (sscanf(tmpbuf, "%d", &status) != 1) 467 return -EINVAL; 468 h = shost_to_hba(shost); 469 h->acciopath_status = !!status; 470 dev_warn(&h->pdev->dev, 471 "hpsa: HP SSD Smart Path %s via sysfs update.\n", 472 h->acciopath_status ? "enabled" : "disabled"); 473 return count; 474 } 475 476 static ssize_t host_store_raid_offload_debug(struct device *dev, 477 struct device_attribute *attr, 478 const char *buf, size_t count) 479 { 480 int debug_level, len; 481 struct ctlr_info *h; 482 struct Scsi_Host *shost = class_to_shost(dev); 483 char tmpbuf[10]; 484 485 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) 486 return -EACCES; 487 len = count > sizeof(tmpbuf) - 1 ? sizeof(tmpbuf) - 1 : count; 488 strncpy(tmpbuf, buf, len); 489 tmpbuf[len] = '\0'; 490 if (sscanf(tmpbuf, "%d", &debug_level) != 1) 491 return -EINVAL; 492 if (debug_level < 0) 493 debug_level = 0; 494 h = shost_to_hba(shost); 495 h->raid_offload_debug = debug_level; 496 dev_warn(&h->pdev->dev, "hpsa: Set raid_offload_debug level = %d\n", 497 h->raid_offload_debug); 498 return count; 499 } 500 501 static ssize_t host_store_rescan(struct device *dev, 502 struct device_attribute *attr, 503 const char *buf, size_t count) 504 { 505 struct ctlr_info *h; 506 struct Scsi_Host *shost = class_to_shost(dev); 507 h = shost_to_hba(shost); 508 hpsa_scan_start(h->scsi_host); 509 return count; 510 } 511 512 static void hpsa_turn_off_ioaccel_for_device(struct hpsa_scsi_dev_t *device) 513 { 514 device->offload_enabled = 0; 515 device->offload_to_be_enabled = 0; 516 } 517 518 static ssize_t host_show_firmware_revision(struct device *dev, 519 struct device_attribute *attr, char *buf) 520 { 521 struct ctlr_info *h; 522 struct Scsi_Host *shost = class_to_shost(dev); 523 unsigned char *fwrev; 524 525 h = shost_to_hba(shost); 526 if (!h->hba_inquiry_data) 527 return 0; 528 fwrev = &h->hba_inquiry_data[32]; 529 return snprintf(buf, 20, "%c%c%c%c\n", 530 fwrev[0], fwrev[1], fwrev[2], fwrev[3]); 531 } 532 533 static ssize_t host_show_commands_outstanding(struct device *dev, 534 struct device_attribute *attr, char *buf) 535 { 536 struct Scsi_Host *shost = class_to_shost(dev); 537 struct ctlr_info *h = shost_to_hba(shost); 538 539 return snprintf(buf, 20, "%d\n", 540 atomic_read(&h->commands_outstanding)); 541 } 542 543 static ssize_t host_show_transport_mode(struct device *dev, 544 struct device_attribute *attr, char *buf) 545 { 546 struct ctlr_info *h; 547 struct Scsi_Host *shost = class_to_shost(dev); 548 549 h = shost_to_hba(shost); 550 return snprintf(buf, 20, "%s\n", 551 h->transMethod & CFGTBL_Trans_Performant ? 552 "performant" : "simple"); 553 } 554 555 static ssize_t host_show_hp_ssd_smart_path_status(struct device *dev, 556 struct device_attribute *attr, char *buf) 557 { 558 struct ctlr_info *h; 559 struct Scsi_Host *shost = class_to_shost(dev); 560 561 h = shost_to_hba(shost); 562 return snprintf(buf, 30, "HP SSD Smart Path %s\n", 563 (h->acciopath_status == 1) ? "enabled" : "disabled"); 564 } 565 566 /* List of controllers which cannot be hard reset on kexec with reset_devices */ 567 static u32 unresettable_controller[] = { 568 0x324a103C, /* Smart Array P712m */ 569 0x324b103C, /* Smart Array P711m */ 570 0x3223103C, /* Smart Array P800 */ 571 0x3234103C, /* Smart Array P400 */ 572 0x3235103C, /* Smart Array P400i */ 573 0x3211103C, /* Smart Array E200i */ 574 0x3212103C, /* Smart Array E200 */ 575 0x3213103C, /* Smart Array E200i */ 576 0x3214103C, /* Smart Array E200i */ 577 0x3215103C, /* Smart Array E200i */ 578 0x3237103C, /* Smart Array E500 */ 579 0x323D103C, /* Smart Array P700m */ 580 0x40800E11, /* Smart Array 5i */ 581 0x409C0E11, /* Smart Array 6400 */ 582 0x409D0E11, /* Smart Array 6400 EM */ 583 0x40700E11, /* Smart Array 5300 */ 584 0x40820E11, /* Smart Array 532 */ 585 0x40830E11, /* Smart Array 5312 */ 586 0x409A0E11, /* Smart Array 641 */ 587 0x409B0E11, /* Smart Array 642 */ 588 0x40910E11, /* Smart Array 6i */ 589 }; 590 591 /* List of controllers which cannot even be soft reset */ 592 static u32 soft_unresettable_controller[] = { 593 0x40800E11, /* Smart Array 5i */ 594 0x40700E11, /* Smart Array 5300 */ 595 0x40820E11, /* Smart Array 532 */ 596 0x40830E11, /* Smart Array 5312 */ 597 0x409A0E11, /* Smart Array 641 */ 598 0x409B0E11, /* Smart Array 642 */ 599 0x40910E11, /* Smart Array 6i */ 600 /* Exclude 640x boards. These are two pci devices in one slot 601 * which share a battery backed cache module. One controls the 602 * cache, the other accesses the cache through the one that controls 603 * it. If we reset the one controlling the cache, the other will 604 * likely not be happy. Just forbid resetting this conjoined mess. 605 * The 640x isn't really supported by hpsa anyway. 606 */ 607 0x409C0E11, /* Smart Array 6400 */ 608 0x409D0E11, /* Smart Array 6400 EM */ 609 }; 610 611 static int board_id_in_array(u32 a[], int nelems, u32 board_id) 612 { 613 int i; 614 615 for (i = 0; i < nelems; i++) 616 if (a[i] == board_id) 617 return 1; 618 return 0; 619 } 620 621 static int ctlr_is_hard_resettable(u32 board_id) 622 { 623 return !board_id_in_array(unresettable_controller, 624 ARRAY_SIZE(unresettable_controller), board_id); 625 } 626 627 static int ctlr_is_soft_resettable(u32 board_id) 628 { 629 return !board_id_in_array(soft_unresettable_controller, 630 ARRAY_SIZE(soft_unresettable_controller), board_id); 631 } 632 633 static int ctlr_is_resettable(u32 board_id) 634 { 635 return ctlr_is_hard_resettable(board_id) || 636 ctlr_is_soft_resettable(board_id); 637 } 638 639 static ssize_t host_show_resettable(struct device *dev, 640 struct device_attribute *attr, char *buf) 641 { 642 struct ctlr_info *h; 643 struct Scsi_Host *shost = class_to_shost(dev); 644 645 h = shost_to_hba(shost); 646 return snprintf(buf, 20, "%d\n", ctlr_is_resettable(h->board_id)); 647 } 648 649 static inline int is_logical_dev_addr_mode(unsigned char scsi3addr[]) 650 { 651 return (scsi3addr[3] & 0xC0) == 0x40; 652 } 653 654 static const char * const raid_label[] = { "0", "4", "1(+0)", "5", "5+1", "6", 655 "1(+0)ADM", "UNKNOWN", "PHYS DRV" 656 }; 657 #define HPSA_RAID_0 0 658 #define HPSA_RAID_4 1 659 #define HPSA_RAID_1 2 /* also used for RAID 10 */ 660 #define HPSA_RAID_5 3 /* also used for RAID 50 */ 661 #define HPSA_RAID_51 4 662 #define HPSA_RAID_6 5 /* also used for RAID 60 */ 663 #define HPSA_RAID_ADM 6 /* also used for RAID 1+0 ADM */ 664 #define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 2) 665 #define PHYSICAL_DRIVE (ARRAY_SIZE(raid_label) - 1) 666 667 static inline bool is_logical_device(struct hpsa_scsi_dev_t *device) 668 { 669 return !device->physical_device; 670 } 671 672 static ssize_t raid_level_show(struct device *dev, 673 struct device_attribute *attr, char *buf) 674 { 675 ssize_t l = 0; 676 unsigned char rlevel; 677 struct ctlr_info *h; 678 struct scsi_device *sdev; 679 struct hpsa_scsi_dev_t *hdev; 680 unsigned long flags; 681 682 sdev = to_scsi_device(dev); 683 h = sdev_to_hba(sdev); 684 spin_lock_irqsave(&h->lock, flags); 685 hdev = sdev->hostdata; 686 if (!hdev) { 687 spin_unlock_irqrestore(&h->lock, flags); 688 return -ENODEV; 689 } 690 691 /* Is this even a logical drive? */ 692 if (!is_logical_device(hdev)) { 693 spin_unlock_irqrestore(&h->lock, flags); 694 l = snprintf(buf, PAGE_SIZE, "N/A\n"); 695 return l; 696 } 697 698 rlevel = hdev->raid_level; 699 spin_unlock_irqrestore(&h->lock, flags); 700 if (rlevel > RAID_UNKNOWN) 701 rlevel = RAID_UNKNOWN; 702 l = snprintf(buf, PAGE_SIZE, "RAID %s\n", raid_label[rlevel]); 703 return l; 704 } 705 706 static ssize_t lunid_show(struct device *dev, 707 struct device_attribute *attr, char *buf) 708 { 709 struct ctlr_info *h; 710 struct scsi_device *sdev; 711 struct hpsa_scsi_dev_t *hdev; 712 unsigned long flags; 713 unsigned char lunid[8]; 714 715 sdev = to_scsi_device(dev); 716 h = sdev_to_hba(sdev); 717 spin_lock_irqsave(&h->lock, flags); 718 hdev = sdev->hostdata; 719 if (!hdev) { 720 spin_unlock_irqrestore(&h->lock, flags); 721 return -ENODEV; 722 } 723 memcpy(lunid, hdev->scsi3addr, sizeof(lunid)); 724 spin_unlock_irqrestore(&h->lock, flags); 725 return snprintf(buf, 20, "0x%8phN\n", lunid); 726 } 727 728 static ssize_t unique_id_show(struct device *dev, 729 struct device_attribute *attr, char *buf) 730 { 731 struct ctlr_info *h; 732 struct scsi_device *sdev; 733 struct hpsa_scsi_dev_t *hdev; 734 unsigned long flags; 735 unsigned char sn[16]; 736 737 sdev = to_scsi_device(dev); 738 h = sdev_to_hba(sdev); 739 spin_lock_irqsave(&h->lock, flags); 740 hdev = sdev->hostdata; 741 if (!hdev) { 742 spin_unlock_irqrestore(&h->lock, flags); 743 return -ENODEV; 744 } 745 memcpy(sn, hdev->device_id, sizeof(sn)); 746 spin_unlock_irqrestore(&h->lock, flags); 747 return snprintf(buf, 16 * 2 + 2, 748 "%02X%02X%02X%02X%02X%02X%02X%02X" 749 "%02X%02X%02X%02X%02X%02X%02X%02X\n", 750 sn[0], sn[1], sn[2], sn[3], 751 sn[4], sn[5], sn[6], sn[7], 752 sn[8], sn[9], sn[10], sn[11], 753 sn[12], sn[13], sn[14], sn[15]); 754 } 755 756 static ssize_t sas_address_show(struct device *dev, 757 struct device_attribute *attr, char *buf) 758 { 759 struct ctlr_info *h; 760 struct scsi_device *sdev; 761 struct hpsa_scsi_dev_t *hdev; 762 unsigned long flags; 763 u64 sas_address; 764 765 sdev = to_scsi_device(dev); 766 h = sdev_to_hba(sdev); 767 spin_lock_irqsave(&h->lock, flags); 768 hdev = sdev->hostdata; 769 if (!hdev || is_logical_device(hdev) || !hdev->expose_device) { 770 spin_unlock_irqrestore(&h->lock, flags); 771 return -ENODEV; 772 } 773 sas_address = hdev->sas_address; 774 spin_unlock_irqrestore(&h->lock, flags); 775 776 return snprintf(buf, PAGE_SIZE, "0x%016llx\n", sas_address); 777 } 778 779 static ssize_t host_show_hp_ssd_smart_path_enabled(struct device *dev, 780 struct device_attribute *attr, char *buf) 781 { 782 struct ctlr_info *h; 783 struct scsi_device *sdev; 784 struct hpsa_scsi_dev_t *hdev; 785 unsigned long flags; 786 int offload_enabled; 787 788 sdev = to_scsi_device(dev); 789 h = sdev_to_hba(sdev); 790 spin_lock_irqsave(&h->lock, flags); 791 hdev = sdev->hostdata; 792 if (!hdev) { 793 spin_unlock_irqrestore(&h->lock, flags); 794 return -ENODEV; 795 } 796 offload_enabled = hdev->offload_enabled; 797 spin_unlock_irqrestore(&h->lock, flags); 798 799 if (hdev->devtype == TYPE_DISK || hdev->devtype == TYPE_ZBC) 800 return snprintf(buf, 20, "%d\n", offload_enabled); 801 else 802 return snprintf(buf, 40, "%s\n", 803 "Not applicable for a controller"); 804 } 805 806 #define MAX_PATHS 8 807 static ssize_t path_info_show(struct device *dev, 808 struct device_attribute *attr, char *buf) 809 { 810 struct ctlr_info *h; 811 struct scsi_device *sdev; 812 struct hpsa_scsi_dev_t *hdev; 813 unsigned long flags; 814 int i; 815 int output_len = 0; 816 u8 box; 817 u8 bay; 818 u8 path_map_index = 0; 819 char *active; 820 unsigned char phys_connector[2]; 821 822 sdev = to_scsi_device(dev); 823 h = sdev_to_hba(sdev); 824 spin_lock_irqsave(&h->devlock, flags); 825 hdev = sdev->hostdata; 826 if (!hdev) { 827 spin_unlock_irqrestore(&h->devlock, flags); 828 return -ENODEV; 829 } 830 831 bay = hdev->bay; 832 for (i = 0; i < MAX_PATHS; i++) { 833 path_map_index = 1<<i; 834 if (i == hdev->active_path_index) 835 active = "Active"; 836 else if (hdev->path_map & path_map_index) 837 active = "Inactive"; 838 else 839 continue; 840 841 output_len += scnprintf(buf + output_len, 842 PAGE_SIZE - output_len, 843 "[%d:%d:%d:%d] %20.20s ", 844 h->scsi_host->host_no, 845 hdev->bus, hdev->target, hdev->lun, 846 scsi_device_type(hdev->devtype)); 847 848 if (hdev->devtype == TYPE_RAID || is_logical_device(hdev)) { 849 output_len += scnprintf(buf + output_len, 850 PAGE_SIZE - output_len, 851 "%s\n", active); 852 continue; 853 } 854 855 box = hdev->box[i]; 856 memcpy(&phys_connector, &hdev->phys_connector[i], 857 sizeof(phys_connector)); 858 if (phys_connector[0] < '0') 859 phys_connector[0] = '0'; 860 if (phys_connector[1] < '0') 861 phys_connector[1] = '0'; 862 output_len += scnprintf(buf + output_len, 863 PAGE_SIZE - output_len, 864 "PORT: %.2s ", 865 phys_connector); 866 if ((hdev->devtype == TYPE_DISK || hdev->devtype == TYPE_ZBC) && 867 hdev->expose_device) { 868 if (box == 0 || box == 0xFF) { 869 output_len += scnprintf(buf + output_len, 870 PAGE_SIZE - output_len, 871 "BAY: %hhu %s\n", 872 bay, active); 873 } else { 874 output_len += scnprintf(buf + output_len, 875 PAGE_SIZE - output_len, 876 "BOX: %hhu BAY: %hhu %s\n", 877 box, bay, active); 878 } 879 } else if (box != 0 && box != 0xFF) { 880 output_len += scnprintf(buf + output_len, 881 PAGE_SIZE - output_len, "BOX: %hhu %s\n", 882 box, active); 883 } else 884 output_len += scnprintf(buf + output_len, 885 PAGE_SIZE - output_len, "%s\n", active); 886 } 887 888 spin_unlock_irqrestore(&h->devlock, flags); 889 return output_len; 890 } 891 892 static ssize_t host_show_ctlr_num(struct device *dev, 893 struct device_attribute *attr, char *buf) 894 { 895 struct ctlr_info *h; 896 struct Scsi_Host *shost = class_to_shost(dev); 897 898 h = shost_to_hba(shost); 899 return snprintf(buf, 20, "%d\n", h->ctlr); 900 } 901 902 static ssize_t host_show_legacy_board(struct device *dev, 903 struct device_attribute *attr, char *buf) 904 { 905 struct ctlr_info *h; 906 struct Scsi_Host *shost = class_to_shost(dev); 907 908 h = shost_to_hba(shost); 909 return snprintf(buf, 20, "%d\n", h->legacy_board ? 1 : 0); 910 } 911 912 static DEVICE_ATTR_RO(raid_level); 913 static DEVICE_ATTR_RO(lunid); 914 static DEVICE_ATTR_RO(unique_id); 915 static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan); 916 static DEVICE_ATTR_RO(sas_address); 917 static DEVICE_ATTR(hp_ssd_smart_path_enabled, S_IRUGO, 918 host_show_hp_ssd_smart_path_enabled, NULL); 919 static DEVICE_ATTR_RO(path_info); 920 static DEVICE_ATTR(hp_ssd_smart_path_status, S_IWUSR|S_IRUGO|S_IROTH, 921 host_show_hp_ssd_smart_path_status, 922 host_store_hp_ssd_smart_path_status); 923 static DEVICE_ATTR(raid_offload_debug, S_IWUSR, NULL, 924 host_store_raid_offload_debug); 925 static DEVICE_ATTR(firmware_revision, S_IRUGO, 926 host_show_firmware_revision, NULL); 927 static DEVICE_ATTR(commands_outstanding, S_IRUGO, 928 host_show_commands_outstanding, NULL); 929 static DEVICE_ATTR(transport_mode, S_IRUGO, 930 host_show_transport_mode, NULL); 931 static DEVICE_ATTR(resettable, S_IRUGO, 932 host_show_resettable, NULL); 933 static DEVICE_ATTR(lockup_detected, S_IRUGO, 934 host_show_lockup_detected, NULL); 935 static DEVICE_ATTR(ctlr_num, S_IRUGO, 936 host_show_ctlr_num, NULL); 937 static DEVICE_ATTR(legacy_board, S_IRUGO, 938 host_show_legacy_board, NULL); 939 940 static struct device_attribute *hpsa_sdev_attrs[] = { 941 &dev_attr_raid_level, 942 &dev_attr_lunid, 943 &dev_attr_unique_id, 944 &dev_attr_hp_ssd_smart_path_enabled, 945 &dev_attr_path_info, 946 &dev_attr_sas_address, 947 NULL, 948 }; 949 950 static struct device_attribute *hpsa_shost_attrs[] = { 951 &dev_attr_rescan, 952 &dev_attr_firmware_revision, 953 &dev_attr_commands_outstanding, 954 &dev_attr_transport_mode, 955 &dev_attr_resettable, 956 &dev_attr_hp_ssd_smart_path_status, 957 &dev_attr_raid_offload_debug, 958 &dev_attr_lockup_detected, 959 &dev_attr_ctlr_num, 960 &dev_attr_legacy_board, 961 NULL, 962 }; 963 964 #define HPSA_NRESERVED_CMDS (HPSA_CMDS_RESERVED_FOR_DRIVER +\ 965 HPSA_MAX_CONCURRENT_PASSTHRUS) 966 967 static struct scsi_host_template hpsa_driver_template = { 968 .module = THIS_MODULE, 969 .name = HPSA, 970 .proc_name = HPSA, 971 .queuecommand = hpsa_scsi_queue_command, 972 .scan_start = hpsa_scan_start, 973 .scan_finished = hpsa_scan_finished, 974 .change_queue_depth = hpsa_change_queue_depth, 975 .this_id = -1, 976 .eh_device_reset_handler = hpsa_eh_device_reset_handler, 977 .ioctl = hpsa_ioctl, 978 .slave_alloc = hpsa_slave_alloc, 979 .slave_configure = hpsa_slave_configure, 980 .slave_destroy = hpsa_slave_destroy, 981 #ifdef CONFIG_COMPAT 982 .compat_ioctl = hpsa_compat_ioctl, 983 #endif 984 .sdev_attrs = hpsa_sdev_attrs, 985 .shost_attrs = hpsa_shost_attrs, 986 .max_sectors = 2048, 987 .no_write_same = 1, 988 }; 989 990 static inline u32 next_command(struct ctlr_info *h, u8 q) 991 { 992 u32 a; 993 struct reply_queue_buffer *rq = &h->reply_queue[q]; 994 995 if (h->transMethod & CFGTBL_Trans_io_accel1) 996 return h->access.command_completed(h, q); 997 998 if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant))) 999 return h->access.command_completed(h, q); 1000 1001 if ((rq->head[rq->current_entry] & 1) == rq->wraparound) { 1002 a = rq->head[rq->current_entry]; 1003 rq->current_entry++; 1004 atomic_dec(&h->commands_outstanding); 1005 } else { 1006 a = FIFO_EMPTY; 1007 } 1008 /* Check for wraparound */ 1009 if (rq->current_entry == h->max_commands) { 1010 rq->current_entry = 0; 1011 rq->wraparound ^= 1; 1012 } 1013 return a; 1014 } 1015 1016 /* 1017 * There are some special bits in the bus address of the 1018 * command that we have to set for the controller to know 1019 * how to process the command: 1020 * 1021 * Normal performant mode: 1022 * bit 0: 1 means performant mode, 0 means simple mode. 1023 * bits 1-3 = block fetch table entry 1024 * bits 4-6 = command type (== 0) 1025 * 1026 * ioaccel1 mode: 1027 * bit 0 = "performant mode" bit. 1028 * bits 1-3 = block fetch table entry 1029 * bits 4-6 = command type (== 110) 1030 * (command type is needed because ioaccel1 mode 1031 * commands are submitted through the same register as normal 1032 * mode commands, so this is how the controller knows whether 1033 * the command is normal mode or ioaccel1 mode.) 1034 * 1035 * ioaccel2 mode: 1036 * bit 0 = "performant mode" bit. 1037 * bits 1-4 = block fetch table entry (note extra bit) 1038 * bits 4-6 = not needed, because ioaccel2 mode has 1039 * a separate special register for submitting commands. 1040 */ 1041 1042 /* 1043 * set_performant_mode: Modify the tag for cciss performant 1044 * set bit 0 for pull model, bits 3-1 for block fetch 1045 * register number 1046 */ 1047 #define DEFAULT_REPLY_QUEUE (-1) 1048 static void set_performant_mode(struct ctlr_info *h, struct CommandList *c, 1049 int reply_queue) 1050 { 1051 if (likely(h->transMethod & CFGTBL_Trans_Performant)) { 1052 c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1); 1053 if (unlikely(!h->msix_vectors)) 1054 return; 1055 c->Header.ReplyQueue = reply_queue; 1056 } 1057 } 1058 1059 static void set_ioaccel1_performant_mode(struct ctlr_info *h, 1060 struct CommandList *c, 1061 int reply_queue) 1062 { 1063 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[c->cmdindex]; 1064 1065 /* 1066 * Tell the controller to post the reply to the queue for this 1067 * processor. This seems to give the best I/O throughput. 1068 */ 1069 cp->ReplyQueue = reply_queue; 1070 /* 1071 * Set the bits in the address sent down to include: 1072 * - performant mode bit (bit 0) 1073 * - pull count (bits 1-3) 1074 * - command type (bits 4-6) 1075 */ 1076 c->busaddr |= 1 | (h->ioaccel1_blockFetchTable[c->Header.SGList] << 1) | 1077 IOACCEL1_BUSADDR_CMDTYPE; 1078 } 1079 1080 static void set_ioaccel2_tmf_performant_mode(struct ctlr_info *h, 1081 struct CommandList *c, 1082 int reply_queue) 1083 { 1084 struct hpsa_tmf_struct *cp = (struct hpsa_tmf_struct *) 1085 &h->ioaccel2_cmd_pool[c->cmdindex]; 1086 1087 /* Tell the controller to post the reply to the queue for this 1088 * processor. This seems to give the best I/O throughput. 1089 */ 1090 cp->reply_queue = reply_queue; 1091 /* Set the bits in the address sent down to include: 1092 * - performant mode bit not used in ioaccel mode 2 1093 * - pull count (bits 0-3) 1094 * - command type isn't needed for ioaccel2 1095 */ 1096 c->busaddr |= h->ioaccel2_blockFetchTable[0]; 1097 } 1098 1099 static void set_ioaccel2_performant_mode(struct ctlr_info *h, 1100 struct CommandList *c, 1101 int reply_queue) 1102 { 1103 struct io_accel2_cmd *cp = &h->ioaccel2_cmd_pool[c->cmdindex]; 1104 1105 /* 1106 * Tell the controller to post the reply to the queue for this 1107 * processor. This seems to give the best I/O throughput. 1108 */ 1109 cp->reply_queue = reply_queue; 1110 /* 1111 * Set the bits in the address sent down to include: 1112 * - performant mode bit not used in ioaccel mode 2 1113 * - pull count (bits 0-3) 1114 * - command type isn't needed for ioaccel2 1115 */ 1116 c->busaddr |= (h->ioaccel2_blockFetchTable[cp->sg_count]); 1117 } 1118 1119 static int is_firmware_flash_cmd(u8 *cdb) 1120 { 1121 return cdb[0] == BMIC_WRITE && cdb[6] == BMIC_FLASH_FIRMWARE; 1122 } 1123 1124 /* 1125 * During firmware flash, the heartbeat register may not update as frequently 1126 * as it should. So we dial down lockup detection during firmware flash. and 1127 * dial it back up when firmware flash completes. 1128 */ 1129 #define HEARTBEAT_SAMPLE_INTERVAL_DURING_FLASH (240 * HZ) 1130 #define HEARTBEAT_SAMPLE_INTERVAL (30 * HZ) 1131 #define HPSA_EVENT_MONITOR_INTERVAL (15 * HZ) 1132 static void dial_down_lockup_detection_during_fw_flash(struct ctlr_info *h, 1133 struct CommandList *c) 1134 { 1135 if (!is_firmware_flash_cmd(c->Request.CDB)) 1136 return; 1137 atomic_inc(&h->firmware_flash_in_progress); 1138 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL_DURING_FLASH; 1139 } 1140 1141 static void dial_up_lockup_detection_on_fw_flash_complete(struct ctlr_info *h, 1142 struct CommandList *c) 1143 { 1144 if (is_firmware_flash_cmd(c->Request.CDB) && 1145 atomic_dec_and_test(&h->firmware_flash_in_progress)) 1146 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL; 1147 } 1148 1149 static void __enqueue_cmd_and_start_io(struct ctlr_info *h, 1150 struct CommandList *c, int reply_queue) 1151 { 1152 dial_down_lockup_detection_during_fw_flash(h, c); 1153 atomic_inc(&h->commands_outstanding); 1154 if (c->device) 1155 atomic_inc(&c->device->commands_outstanding); 1156 1157 reply_queue = h->reply_map[raw_smp_processor_id()]; 1158 switch (c->cmd_type) { 1159 case CMD_IOACCEL1: 1160 set_ioaccel1_performant_mode(h, c, reply_queue); 1161 writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET); 1162 break; 1163 case CMD_IOACCEL2: 1164 set_ioaccel2_performant_mode(h, c, reply_queue); 1165 writel(c->busaddr, h->vaddr + IOACCEL2_INBOUND_POSTQ_32); 1166 break; 1167 case IOACCEL2_TMF: 1168 set_ioaccel2_tmf_performant_mode(h, c, reply_queue); 1169 writel(c->busaddr, h->vaddr + IOACCEL2_INBOUND_POSTQ_32); 1170 break; 1171 default: 1172 set_performant_mode(h, c, reply_queue); 1173 h->access.submit_command(h, c); 1174 } 1175 } 1176 1177 static void enqueue_cmd_and_start_io(struct ctlr_info *h, struct CommandList *c) 1178 { 1179 __enqueue_cmd_and_start_io(h, c, DEFAULT_REPLY_QUEUE); 1180 } 1181 1182 static inline int is_hba_lunid(unsigned char scsi3addr[]) 1183 { 1184 return memcmp(scsi3addr, RAID_CTLR_LUNID, 8) == 0; 1185 } 1186 1187 static inline int is_scsi_rev_5(struct ctlr_info *h) 1188 { 1189 if (!h->hba_inquiry_data) 1190 return 0; 1191 if ((h->hba_inquiry_data[2] & 0x07) == 5) 1192 return 1; 1193 return 0; 1194 } 1195 1196 static int hpsa_find_target_lun(struct ctlr_info *h, 1197 unsigned char scsi3addr[], int bus, int *target, int *lun) 1198 { 1199 /* finds an unused bus, target, lun for a new physical device 1200 * assumes h->devlock is held 1201 */ 1202 int i, found = 0; 1203 DECLARE_BITMAP(lun_taken, HPSA_MAX_DEVICES); 1204 1205 bitmap_zero(lun_taken, HPSA_MAX_DEVICES); 1206 1207 for (i = 0; i < h->ndevices; i++) { 1208 if (h->dev[i]->bus == bus && h->dev[i]->target != -1) 1209 __set_bit(h->dev[i]->target, lun_taken); 1210 } 1211 1212 i = find_first_zero_bit(lun_taken, HPSA_MAX_DEVICES); 1213 if (i < HPSA_MAX_DEVICES) { 1214 /* *bus = 1; */ 1215 *target = i; 1216 *lun = 0; 1217 found = 1; 1218 } 1219 return !found; 1220 } 1221 1222 static void hpsa_show_dev_msg(const char *level, struct ctlr_info *h, 1223 struct hpsa_scsi_dev_t *dev, char *description) 1224 { 1225 #define LABEL_SIZE 25 1226 char label[LABEL_SIZE]; 1227 1228 if (h == NULL || h->pdev == NULL || h->scsi_host == NULL) 1229 return; 1230 1231 switch (dev->devtype) { 1232 case TYPE_RAID: 1233 snprintf(label, LABEL_SIZE, "controller"); 1234 break; 1235 case TYPE_ENCLOSURE: 1236 snprintf(label, LABEL_SIZE, "enclosure"); 1237 break; 1238 case TYPE_DISK: 1239 case TYPE_ZBC: 1240 if (dev->external) 1241 snprintf(label, LABEL_SIZE, "external"); 1242 else if (!is_logical_dev_addr_mode(dev->scsi3addr)) 1243 snprintf(label, LABEL_SIZE, "%s", 1244 raid_label[PHYSICAL_DRIVE]); 1245 else 1246 snprintf(label, LABEL_SIZE, "RAID-%s", 1247 dev->raid_level > RAID_UNKNOWN ? "?" : 1248 raid_label[dev->raid_level]); 1249 break; 1250 case TYPE_ROM: 1251 snprintf(label, LABEL_SIZE, "rom"); 1252 break; 1253 case TYPE_TAPE: 1254 snprintf(label, LABEL_SIZE, "tape"); 1255 break; 1256 case TYPE_MEDIUM_CHANGER: 1257 snprintf(label, LABEL_SIZE, "changer"); 1258 break; 1259 default: 1260 snprintf(label, LABEL_SIZE, "UNKNOWN"); 1261 break; 1262 } 1263 1264 dev_printk(level, &h->pdev->dev, 1265 "scsi %d:%d:%d:%d: %s %s %.8s %.16s %s SSDSmartPathCap%c En%c Exp=%d\n", 1266 h->scsi_host->host_no, dev->bus, dev->target, dev->lun, 1267 description, 1268 scsi_device_type(dev->devtype), 1269 dev->vendor, 1270 dev->model, 1271 label, 1272 dev->offload_config ? '+' : '-', 1273 dev->offload_to_be_enabled ? '+' : '-', 1274 dev->expose_device); 1275 } 1276 1277 /* Add an entry into h->dev[] array. */ 1278 static int hpsa_scsi_add_entry(struct ctlr_info *h, 1279 struct hpsa_scsi_dev_t *device, 1280 struct hpsa_scsi_dev_t *added[], int *nadded) 1281 { 1282 /* assumes h->devlock is held */ 1283 int n = h->ndevices; 1284 int i; 1285 unsigned char addr1[8], addr2[8]; 1286 struct hpsa_scsi_dev_t *sd; 1287 1288 if (n >= HPSA_MAX_DEVICES) { 1289 dev_err(&h->pdev->dev, "too many devices, some will be " 1290 "inaccessible.\n"); 1291 return -1; 1292 } 1293 1294 /* physical devices do not have lun or target assigned until now. */ 1295 if (device->lun != -1) 1296 /* Logical device, lun is already assigned. */ 1297 goto lun_assigned; 1298 1299 /* If this device a non-zero lun of a multi-lun device 1300 * byte 4 of the 8-byte LUN addr will contain the logical 1301 * unit no, zero otherwise. 1302 */ 1303 if (device->scsi3addr[4] == 0) { 1304 /* This is not a non-zero lun of a multi-lun device */ 1305 if (hpsa_find_target_lun(h, device->scsi3addr, 1306 device->bus, &device->target, &device->lun) != 0) 1307 return -1; 1308 goto lun_assigned; 1309 } 1310 1311 /* This is a non-zero lun of a multi-lun device. 1312 * Search through our list and find the device which 1313 * has the same 8 byte LUN address, excepting byte 4 and 5. 1314 * Assign the same bus and target for this new LUN. 1315 * Use the logical unit number from the firmware. 1316 */ 1317 memcpy(addr1, device->scsi3addr, 8); 1318 addr1[4] = 0; 1319 addr1[5] = 0; 1320 for (i = 0; i < n; i++) { 1321 sd = h->dev[i]; 1322 memcpy(addr2, sd->scsi3addr, 8); 1323 addr2[4] = 0; 1324 addr2[5] = 0; 1325 /* differ only in byte 4 and 5? */ 1326 if (memcmp(addr1, addr2, 8) == 0) { 1327 device->bus = sd->bus; 1328 device->target = sd->target; 1329 device->lun = device->scsi3addr[4]; 1330 break; 1331 } 1332 } 1333 if (device->lun == -1) { 1334 dev_warn(&h->pdev->dev, "physical device with no LUN=0," 1335 " suspect firmware bug or unsupported hardware " 1336 "configuration.\n"); 1337 return -1; 1338 } 1339 1340 lun_assigned: 1341 1342 h->dev[n] = device; 1343 h->ndevices++; 1344 added[*nadded] = device; 1345 (*nadded)++; 1346 hpsa_show_dev_msg(KERN_INFO, h, device, 1347 device->expose_device ? "added" : "masked"); 1348 return 0; 1349 } 1350 1351 /* 1352 * Called during a scan operation. 1353 * 1354 * Update an entry in h->dev[] array. 1355 */ 1356 static void hpsa_scsi_update_entry(struct ctlr_info *h, 1357 int entry, struct hpsa_scsi_dev_t *new_entry) 1358 { 1359 /* assumes h->devlock is held */ 1360 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES); 1361 1362 /* Raid level changed. */ 1363 h->dev[entry]->raid_level = new_entry->raid_level; 1364 1365 /* 1366 * ioacccel_handle may have changed for a dual domain disk 1367 */ 1368 h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle; 1369 1370 /* Raid offload parameters changed. Careful about the ordering. */ 1371 if (new_entry->offload_config && new_entry->offload_to_be_enabled) { 1372 /* 1373 * if drive is newly offload_enabled, we want to copy the 1374 * raid map data first. If previously offload_enabled and 1375 * offload_config were set, raid map data had better be 1376 * the same as it was before. If raid map data has changed 1377 * then it had better be the case that 1378 * h->dev[entry]->offload_enabled is currently 0. 1379 */ 1380 h->dev[entry]->raid_map = new_entry->raid_map; 1381 h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle; 1382 } 1383 if (new_entry->offload_to_be_enabled) { 1384 h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle; 1385 wmb(); /* set ioaccel_handle *before* hba_ioaccel_enabled */ 1386 } 1387 h->dev[entry]->hba_ioaccel_enabled = new_entry->hba_ioaccel_enabled; 1388 h->dev[entry]->offload_config = new_entry->offload_config; 1389 h->dev[entry]->offload_to_mirror = new_entry->offload_to_mirror; 1390 h->dev[entry]->queue_depth = new_entry->queue_depth; 1391 1392 /* 1393 * We can turn off ioaccel offload now, but need to delay turning 1394 * ioaccel on until we can update h->dev[entry]->phys_disk[], but we 1395 * can't do that until all the devices are updated. 1396 */ 1397 h->dev[entry]->offload_to_be_enabled = new_entry->offload_to_be_enabled; 1398 1399 /* 1400 * turn ioaccel off immediately if told to do so. 1401 */ 1402 if (!new_entry->offload_to_be_enabled) 1403 h->dev[entry]->offload_enabled = 0; 1404 1405 hpsa_show_dev_msg(KERN_INFO, h, h->dev[entry], "updated"); 1406 } 1407 1408 /* Replace an entry from h->dev[] array. */ 1409 static void hpsa_scsi_replace_entry(struct ctlr_info *h, 1410 int entry, struct hpsa_scsi_dev_t *new_entry, 1411 struct hpsa_scsi_dev_t *added[], int *nadded, 1412 struct hpsa_scsi_dev_t *removed[], int *nremoved) 1413 { 1414 /* assumes h->devlock is held */ 1415 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES); 1416 removed[*nremoved] = h->dev[entry]; 1417 (*nremoved)++; 1418 1419 /* 1420 * New physical devices won't have target/lun assigned yet 1421 * so we need to preserve the values in the slot we are replacing. 1422 */ 1423 if (new_entry->target == -1) { 1424 new_entry->target = h->dev[entry]->target; 1425 new_entry->lun = h->dev[entry]->lun; 1426 } 1427 1428 h->dev[entry] = new_entry; 1429 added[*nadded] = new_entry; 1430 (*nadded)++; 1431 1432 hpsa_show_dev_msg(KERN_INFO, h, new_entry, "replaced"); 1433 } 1434 1435 /* Remove an entry from h->dev[] array. */ 1436 static void hpsa_scsi_remove_entry(struct ctlr_info *h, int entry, 1437 struct hpsa_scsi_dev_t *removed[], int *nremoved) 1438 { 1439 /* assumes h->devlock is held */ 1440 int i; 1441 struct hpsa_scsi_dev_t *sd; 1442 1443 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES); 1444 1445 sd = h->dev[entry]; 1446 removed[*nremoved] = h->dev[entry]; 1447 (*nremoved)++; 1448 1449 for (i = entry; i < h->ndevices-1; i++) 1450 h->dev[i] = h->dev[i+1]; 1451 h->ndevices--; 1452 hpsa_show_dev_msg(KERN_INFO, h, sd, "removed"); 1453 } 1454 1455 #define SCSI3ADDR_EQ(a, b) ( \ 1456 (a)[7] == (b)[7] && \ 1457 (a)[6] == (b)[6] && \ 1458 (a)[5] == (b)[5] && \ 1459 (a)[4] == (b)[4] && \ 1460 (a)[3] == (b)[3] && \ 1461 (a)[2] == (b)[2] && \ 1462 (a)[1] == (b)[1] && \ 1463 (a)[0] == (b)[0]) 1464 1465 static void fixup_botched_add(struct ctlr_info *h, 1466 struct hpsa_scsi_dev_t *added) 1467 { 1468 /* called when scsi_add_device fails in order to re-adjust 1469 * h->dev[] to match the mid layer's view. 1470 */ 1471 unsigned long flags; 1472 int i, j; 1473 1474 spin_lock_irqsave(&h->lock, flags); 1475 for (i = 0; i < h->ndevices; i++) { 1476 if (h->dev[i] == added) { 1477 for (j = i; j < h->ndevices-1; j++) 1478 h->dev[j] = h->dev[j+1]; 1479 h->ndevices--; 1480 break; 1481 } 1482 } 1483 spin_unlock_irqrestore(&h->lock, flags); 1484 kfree(added); 1485 } 1486 1487 static inline int device_is_the_same(struct hpsa_scsi_dev_t *dev1, 1488 struct hpsa_scsi_dev_t *dev2) 1489 { 1490 /* we compare everything except lun and target as these 1491 * are not yet assigned. Compare parts likely 1492 * to differ first 1493 */ 1494 if (memcmp(dev1->scsi3addr, dev2->scsi3addr, 1495 sizeof(dev1->scsi3addr)) != 0) 1496 return 0; 1497 if (memcmp(dev1->device_id, dev2->device_id, 1498 sizeof(dev1->device_id)) != 0) 1499 return 0; 1500 if (memcmp(dev1->model, dev2->model, sizeof(dev1->model)) != 0) 1501 return 0; 1502 if (memcmp(dev1->vendor, dev2->vendor, sizeof(dev1->vendor)) != 0) 1503 return 0; 1504 if (dev1->devtype != dev2->devtype) 1505 return 0; 1506 if (dev1->bus != dev2->bus) 1507 return 0; 1508 return 1; 1509 } 1510 1511 static inline int device_updated(struct hpsa_scsi_dev_t *dev1, 1512 struct hpsa_scsi_dev_t *dev2) 1513 { 1514 /* Device attributes that can change, but don't mean 1515 * that the device is a different device, nor that the OS 1516 * needs to be told anything about the change. 1517 */ 1518 if (dev1->raid_level != dev2->raid_level) 1519 return 1; 1520 if (dev1->offload_config != dev2->offload_config) 1521 return 1; 1522 if (dev1->offload_to_be_enabled != dev2->offload_to_be_enabled) 1523 return 1; 1524 if (!is_logical_dev_addr_mode(dev1->scsi3addr)) 1525 if (dev1->queue_depth != dev2->queue_depth) 1526 return 1; 1527 /* 1528 * This can happen for dual domain devices. An active 1529 * path change causes the ioaccel handle to change 1530 * 1531 * for example note the handle differences between p0 and p1 1532 * Device WWN ,WWN hash,Handle 1533 * D016 p0|0x3 [02]P2E:01:01,0x5000C5005FC4DACA,0x9B5616,0x01030003 1534 * p1 0x5000C5005FC4DAC9,0x6798C0,0x00040004 1535 */ 1536 if (dev1->ioaccel_handle != dev2->ioaccel_handle) 1537 return 1; 1538 return 0; 1539 } 1540 1541 /* Find needle in haystack. If exact match found, return DEVICE_SAME, 1542 * and return needle location in *index. If scsi3addr matches, but not 1543 * vendor, model, serial num, etc. return DEVICE_CHANGED, and return needle 1544 * location in *index. 1545 * In the case of a minor device attribute change, such as RAID level, just 1546 * return DEVICE_UPDATED, along with the updated device's location in index. 1547 * If needle not found, return DEVICE_NOT_FOUND. 1548 */ 1549 static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t *needle, 1550 struct hpsa_scsi_dev_t *haystack[], int haystack_size, 1551 int *index) 1552 { 1553 int i; 1554 #define DEVICE_NOT_FOUND 0 1555 #define DEVICE_CHANGED 1 1556 #define DEVICE_SAME 2 1557 #define DEVICE_UPDATED 3 1558 if (needle == NULL) 1559 return DEVICE_NOT_FOUND; 1560 1561 for (i = 0; i < haystack_size; i++) { 1562 if (haystack[i] == NULL) /* previously removed. */ 1563 continue; 1564 if (SCSI3ADDR_EQ(needle->scsi3addr, haystack[i]->scsi3addr)) { 1565 *index = i; 1566 if (device_is_the_same(needle, haystack[i])) { 1567 if (device_updated(needle, haystack[i])) 1568 return DEVICE_UPDATED; 1569 return DEVICE_SAME; 1570 } else { 1571 /* Keep offline devices offline */ 1572 if (needle->volume_offline) 1573 return DEVICE_NOT_FOUND; 1574 return DEVICE_CHANGED; 1575 } 1576 } 1577 } 1578 *index = -1; 1579 return DEVICE_NOT_FOUND; 1580 } 1581 1582 static void hpsa_monitor_offline_device(struct ctlr_info *h, 1583 unsigned char scsi3addr[]) 1584 { 1585 struct offline_device_entry *device; 1586 unsigned long flags; 1587 1588 /* Check to see if device is already on the list */ 1589 spin_lock_irqsave(&h->offline_device_lock, flags); 1590 list_for_each_entry(device, &h->offline_device_list, offline_list) { 1591 if (memcmp(device->scsi3addr, scsi3addr, 1592 sizeof(device->scsi3addr)) == 0) { 1593 spin_unlock_irqrestore(&h->offline_device_lock, flags); 1594 return; 1595 } 1596 } 1597 spin_unlock_irqrestore(&h->offline_device_lock, flags); 1598 1599 /* Device is not on the list, add it. */ 1600 device = kmalloc(sizeof(*device), GFP_KERNEL); 1601 if (!device) 1602 return; 1603 1604 memcpy(device->scsi3addr, scsi3addr, sizeof(device->scsi3addr)); 1605 spin_lock_irqsave(&h->offline_device_lock, flags); 1606 list_add_tail(&device->offline_list, &h->offline_device_list); 1607 spin_unlock_irqrestore(&h->offline_device_lock, flags); 1608 } 1609 1610 /* Print a message explaining various offline volume states */ 1611 static void hpsa_show_volume_status(struct ctlr_info *h, 1612 struct hpsa_scsi_dev_t *sd) 1613 { 1614 if (sd->volume_offline == HPSA_VPD_LV_STATUS_UNSUPPORTED) 1615 dev_info(&h->pdev->dev, 1616 "C%d:B%d:T%d:L%d Volume status is not available through vital product data pages.\n", 1617 h->scsi_host->host_no, 1618 sd->bus, sd->target, sd->lun); 1619 switch (sd->volume_offline) { 1620 case HPSA_LV_OK: 1621 break; 1622 case HPSA_LV_UNDERGOING_ERASE: 1623 dev_info(&h->pdev->dev, 1624 "C%d:B%d:T%d:L%d Volume is undergoing background erase process.\n", 1625 h->scsi_host->host_no, 1626 sd->bus, sd->target, sd->lun); 1627 break; 1628 case HPSA_LV_NOT_AVAILABLE: 1629 dev_info(&h->pdev->dev, 1630 "C%d:B%d:T%d:L%d Volume is waiting for transforming volume.\n", 1631 h->scsi_host->host_no, 1632 sd->bus, sd->target, sd->lun); 1633 break; 1634 case HPSA_LV_UNDERGOING_RPI: 1635 dev_info(&h->pdev->dev, 1636 "C%d:B%d:T%d:L%d Volume is undergoing rapid parity init.\n", 1637 h->scsi_host->host_no, 1638 sd->bus, sd->target, sd->lun); 1639 break; 1640 case HPSA_LV_PENDING_RPI: 1641 dev_info(&h->pdev->dev, 1642 "C%d:B%d:T%d:L%d Volume is queued for rapid parity initialization process.\n", 1643 h->scsi_host->host_no, 1644 sd->bus, sd->target, sd->lun); 1645 break; 1646 case HPSA_LV_ENCRYPTED_NO_KEY: 1647 dev_info(&h->pdev->dev, 1648 "C%d:B%d:T%d:L%d Volume is encrypted and cannot be accessed because key is not present.\n", 1649 h->scsi_host->host_no, 1650 sd->bus, sd->target, sd->lun); 1651 break; 1652 case HPSA_LV_PLAINTEXT_IN_ENCRYPT_ONLY_CONTROLLER: 1653 dev_info(&h->pdev->dev, 1654 "C%d:B%d:T%d:L%d Volume is not encrypted and cannot be accessed because controller is in encryption-only mode.\n", 1655 h->scsi_host->host_no, 1656 sd->bus, sd->target, sd->lun); 1657 break; 1658 case HPSA_LV_UNDERGOING_ENCRYPTION: 1659 dev_info(&h->pdev->dev, 1660 "C%d:B%d:T%d:L%d Volume is undergoing encryption process.\n", 1661 h->scsi_host->host_no, 1662 sd->bus, sd->target, sd->lun); 1663 break; 1664 case HPSA_LV_UNDERGOING_ENCRYPTION_REKEYING: 1665 dev_info(&h->pdev->dev, 1666 "C%d:B%d:T%d:L%d Volume is undergoing encryption re-keying process.\n", 1667 h->scsi_host->host_no, 1668 sd->bus, sd->target, sd->lun); 1669 break; 1670 case HPSA_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER: 1671 dev_info(&h->pdev->dev, 1672 "C%d:B%d:T%d:L%d Volume is encrypted and cannot be accessed because controller does not have encryption enabled.\n", 1673 h->scsi_host->host_no, 1674 sd->bus, sd->target, sd->lun); 1675 break; 1676 case HPSA_LV_PENDING_ENCRYPTION: 1677 dev_info(&h->pdev->dev, 1678 "C%d:B%d:T%d:L%d Volume is pending migration to encrypted state, but process has not started.\n", 1679 h->scsi_host->host_no, 1680 sd->bus, sd->target, sd->lun); 1681 break; 1682 case HPSA_LV_PENDING_ENCRYPTION_REKEYING: 1683 dev_info(&h->pdev->dev, 1684 "C%d:B%d:T%d:L%d Volume is encrypted and is pending encryption rekeying.\n", 1685 h->scsi_host->host_no, 1686 sd->bus, sd->target, sd->lun); 1687 break; 1688 } 1689 } 1690 1691 /* 1692 * Figure the list of physical drive pointers for a logical drive with 1693 * raid offload configured. 1694 */ 1695 static void hpsa_figure_phys_disk_ptrs(struct ctlr_info *h, 1696 struct hpsa_scsi_dev_t *dev[], int ndevices, 1697 struct hpsa_scsi_dev_t *logical_drive) 1698 { 1699 struct raid_map_data *map = &logical_drive->raid_map; 1700 struct raid_map_disk_data *dd = &map->data[0]; 1701 int i, j; 1702 int total_disks_per_row = le16_to_cpu(map->data_disks_per_row) + 1703 le16_to_cpu(map->metadata_disks_per_row); 1704 int nraid_map_entries = le16_to_cpu(map->row_cnt) * 1705 le16_to_cpu(map->layout_map_count) * 1706 total_disks_per_row; 1707 int nphys_disk = le16_to_cpu(map->layout_map_count) * 1708 total_disks_per_row; 1709 int qdepth; 1710 1711 if (nraid_map_entries > RAID_MAP_MAX_ENTRIES) 1712 nraid_map_entries = RAID_MAP_MAX_ENTRIES; 1713 1714 logical_drive->nphysical_disks = nraid_map_entries; 1715 1716 qdepth = 0; 1717 for (i = 0; i < nraid_map_entries; i++) { 1718 logical_drive->phys_disk[i] = NULL; 1719 if (!logical_drive->offload_config) 1720 continue; 1721 for (j = 0; j < ndevices; j++) { 1722 if (dev[j] == NULL) 1723 continue; 1724 if (dev[j]->devtype != TYPE_DISK && 1725 dev[j]->devtype != TYPE_ZBC) 1726 continue; 1727 if (is_logical_device(dev[j])) 1728 continue; 1729 if (dev[j]->ioaccel_handle != dd[i].ioaccel_handle) 1730 continue; 1731 1732 logical_drive->phys_disk[i] = dev[j]; 1733 if (i < nphys_disk) 1734 qdepth = min(h->nr_cmds, qdepth + 1735 logical_drive->phys_disk[i]->queue_depth); 1736 break; 1737 } 1738 1739 /* 1740 * This can happen if a physical drive is removed and 1741 * the logical drive is degraded. In that case, the RAID 1742 * map data will refer to a physical disk which isn't actually 1743 * present. And in that case offload_enabled should already 1744 * be 0, but we'll turn it off here just in case 1745 */ 1746 if (!logical_drive->phys_disk[i]) { 1747 dev_warn(&h->pdev->dev, 1748 "%s: [%d:%d:%d:%d] A phys disk component of LV is missing, turning off offload_enabled for LV.\n", 1749 __func__, 1750 h->scsi_host->host_no, logical_drive->bus, 1751 logical_drive->target, logical_drive->lun); 1752 hpsa_turn_off_ioaccel_for_device(logical_drive); 1753 logical_drive->queue_depth = 8; 1754 } 1755 } 1756 if (nraid_map_entries) 1757 /* 1758 * This is correct for reads, too high for full stripe writes, 1759 * way too high for partial stripe writes 1760 */ 1761 logical_drive->queue_depth = qdepth; 1762 else { 1763 if (logical_drive->external) 1764 logical_drive->queue_depth = EXTERNAL_QD; 1765 else 1766 logical_drive->queue_depth = h->nr_cmds; 1767 } 1768 } 1769 1770 static void hpsa_update_log_drive_phys_drive_ptrs(struct ctlr_info *h, 1771 struct hpsa_scsi_dev_t *dev[], int ndevices) 1772 { 1773 int i; 1774 1775 for (i = 0; i < ndevices; i++) { 1776 if (dev[i] == NULL) 1777 continue; 1778 if (dev[i]->devtype != TYPE_DISK && 1779 dev[i]->devtype != TYPE_ZBC) 1780 continue; 1781 if (!is_logical_device(dev[i])) 1782 continue; 1783 1784 /* 1785 * If offload is currently enabled, the RAID map and 1786 * phys_disk[] assignment *better* not be changing 1787 * because we would be changing ioaccel phsy_disk[] pointers 1788 * on a ioaccel volume processing I/O requests. 1789 * 1790 * If an ioaccel volume status changed, initially because it was 1791 * re-configured and thus underwent a transformation, or 1792 * a drive failed, we would have received a state change 1793 * request and ioaccel should have been turned off. When the 1794 * transformation completes, we get another state change 1795 * request to turn ioaccel back on. In this case, we need 1796 * to update the ioaccel information. 1797 * 1798 * Thus: If it is not currently enabled, but will be after 1799 * the scan completes, make sure the ioaccel pointers 1800 * are up to date. 1801 */ 1802 1803 if (!dev[i]->offload_enabled && dev[i]->offload_to_be_enabled) 1804 hpsa_figure_phys_disk_ptrs(h, dev, ndevices, dev[i]); 1805 } 1806 } 1807 1808 static int hpsa_add_device(struct ctlr_info *h, struct hpsa_scsi_dev_t *device) 1809 { 1810 int rc = 0; 1811 1812 if (!h->scsi_host) 1813 return 1; 1814 1815 if (is_logical_device(device)) /* RAID */ 1816 rc = scsi_add_device(h->scsi_host, device->bus, 1817 device->target, device->lun); 1818 else /* HBA */ 1819 rc = hpsa_add_sas_device(h->sas_host, device); 1820 1821 return rc; 1822 } 1823 1824 static int hpsa_find_outstanding_commands_for_dev(struct ctlr_info *h, 1825 struct hpsa_scsi_dev_t *dev) 1826 { 1827 int i; 1828 int count = 0; 1829 1830 for (i = 0; i < h->nr_cmds; i++) { 1831 struct CommandList *c = h->cmd_pool + i; 1832 int refcount = atomic_inc_return(&c->refcount); 1833 1834 if (refcount > 1 && hpsa_cmd_dev_match(h, c, dev, 1835 dev->scsi3addr)) { 1836 unsigned long flags; 1837 1838 spin_lock_irqsave(&h->lock, flags); /* Implied MB */ 1839 if (!hpsa_is_cmd_idle(c)) 1840 ++count; 1841 spin_unlock_irqrestore(&h->lock, flags); 1842 } 1843 1844 cmd_free(h, c); 1845 } 1846 1847 return count; 1848 } 1849 1850 #define NUM_WAIT 20 1851 static void hpsa_wait_for_outstanding_commands_for_dev(struct ctlr_info *h, 1852 struct hpsa_scsi_dev_t *device) 1853 { 1854 int cmds = 0; 1855 int waits = 0; 1856 int num_wait = NUM_WAIT; 1857 1858 if (device->external) 1859 num_wait = HPSA_EH_PTRAID_TIMEOUT; 1860 1861 while (1) { 1862 cmds = hpsa_find_outstanding_commands_for_dev(h, device); 1863 if (cmds == 0) 1864 break; 1865 if (++waits > num_wait) 1866 break; 1867 msleep(1000); 1868 } 1869 1870 if (waits > num_wait) { 1871 dev_warn(&h->pdev->dev, 1872 "%s: removing device [%d:%d:%d:%d] with %d outstanding commands!\n", 1873 __func__, 1874 h->scsi_host->host_no, 1875 device->bus, device->target, device->lun, cmds); 1876 } 1877 } 1878 1879 static void hpsa_remove_device(struct ctlr_info *h, 1880 struct hpsa_scsi_dev_t *device) 1881 { 1882 struct scsi_device *sdev = NULL; 1883 1884 if (!h->scsi_host) 1885 return; 1886 1887 /* 1888 * Allow for commands to drain 1889 */ 1890 device->removed = 1; 1891 hpsa_wait_for_outstanding_commands_for_dev(h, device); 1892 1893 if (is_logical_device(device)) { /* RAID */ 1894 sdev = scsi_device_lookup(h->scsi_host, device->bus, 1895 device->target, device->lun); 1896 if (sdev) { 1897 scsi_remove_device(sdev); 1898 scsi_device_put(sdev); 1899 } else { 1900 /* 1901 * We don't expect to get here. Future commands 1902 * to this device will get a selection timeout as 1903 * if the device were gone. 1904 */ 1905 hpsa_show_dev_msg(KERN_WARNING, h, device, 1906 "didn't find device for removal."); 1907 } 1908 } else { /* HBA */ 1909 1910 hpsa_remove_sas_device(device); 1911 } 1912 } 1913 1914 static void adjust_hpsa_scsi_table(struct ctlr_info *h, 1915 struct hpsa_scsi_dev_t *sd[], int nsds) 1916 { 1917 /* sd contains scsi3 addresses and devtypes, and inquiry 1918 * data. This function takes what's in sd to be the current 1919 * reality and updates h->dev[] to reflect that reality. 1920 */ 1921 int i, entry, device_change, changes = 0; 1922 struct hpsa_scsi_dev_t *csd; 1923 unsigned long flags; 1924 struct hpsa_scsi_dev_t **added, **removed; 1925 int nadded, nremoved; 1926 1927 /* 1928 * A reset can cause a device status to change 1929 * re-schedule the scan to see what happened. 1930 */ 1931 spin_lock_irqsave(&h->reset_lock, flags); 1932 if (h->reset_in_progress) { 1933 h->drv_req_rescan = 1; 1934 spin_unlock_irqrestore(&h->reset_lock, flags); 1935 return; 1936 } 1937 spin_unlock_irqrestore(&h->reset_lock, flags); 1938 1939 added = kcalloc(HPSA_MAX_DEVICES, sizeof(*added), GFP_KERNEL); 1940 removed = kcalloc(HPSA_MAX_DEVICES, sizeof(*removed), GFP_KERNEL); 1941 1942 if (!added || !removed) { 1943 dev_warn(&h->pdev->dev, "out of memory in " 1944 "adjust_hpsa_scsi_table\n"); 1945 goto free_and_out; 1946 } 1947 1948 spin_lock_irqsave(&h->devlock, flags); 1949 1950 /* find any devices in h->dev[] that are not in 1951 * sd[] and remove them from h->dev[], and for any 1952 * devices which have changed, remove the old device 1953 * info and add the new device info. 1954 * If minor device attributes change, just update 1955 * the existing device structure. 1956 */ 1957 i = 0; 1958 nremoved = 0; 1959 nadded = 0; 1960 while (i < h->ndevices) { 1961 csd = h->dev[i]; 1962 device_change = hpsa_scsi_find_entry(csd, sd, nsds, &entry); 1963 if (device_change == DEVICE_NOT_FOUND) { 1964 changes++; 1965 hpsa_scsi_remove_entry(h, i, removed, &nremoved); 1966 continue; /* remove ^^^, hence i not incremented */ 1967 } else if (device_change == DEVICE_CHANGED) { 1968 changes++; 1969 hpsa_scsi_replace_entry(h, i, sd[entry], 1970 added, &nadded, removed, &nremoved); 1971 /* Set it to NULL to prevent it from being freed 1972 * at the bottom of hpsa_update_scsi_devices() 1973 */ 1974 sd[entry] = NULL; 1975 } else if (device_change == DEVICE_UPDATED) { 1976 hpsa_scsi_update_entry(h, i, sd[entry]); 1977 } 1978 i++; 1979 } 1980 1981 /* Now, make sure every device listed in sd[] is also 1982 * listed in h->dev[], adding them if they aren't found 1983 */ 1984 1985 for (i = 0; i < nsds; i++) { 1986 if (!sd[i]) /* if already added above. */ 1987 continue; 1988 1989 /* Don't add devices which are NOT READY, FORMAT IN PROGRESS 1990 * as the SCSI mid-layer does not handle such devices well. 1991 * It relentlessly loops sending TUR at 3Hz, then READ(10) 1992 * at 160Hz, and prevents the system from coming up. 1993 */ 1994 if (sd[i]->volume_offline) { 1995 hpsa_show_volume_status(h, sd[i]); 1996 hpsa_show_dev_msg(KERN_INFO, h, sd[i], "offline"); 1997 continue; 1998 } 1999 2000 device_change = hpsa_scsi_find_entry(sd[i], h->dev, 2001 h->ndevices, &entry); 2002 if (device_change == DEVICE_NOT_FOUND) { 2003 changes++; 2004 if (hpsa_scsi_add_entry(h, sd[i], added, &nadded) != 0) 2005 break; 2006 sd[i] = NULL; /* prevent from being freed later. */ 2007 } else if (device_change == DEVICE_CHANGED) { 2008 /* should never happen... */ 2009 changes++; 2010 dev_warn(&h->pdev->dev, 2011 "device unexpectedly changed.\n"); 2012 /* but if it does happen, we just ignore that device */ 2013 } 2014 } 2015 hpsa_update_log_drive_phys_drive_ptrs(h, h->dev, h->ndevices); 2016 2017 /* 2018 * Now that h->dev[]->phys_disk[] is coherent, we can enable 2019 * any logical drives that need it enabled. 2020 * 2021 * The raid map should be current by now. 2022 * 2023 * We are updating the device list used for I/O requests. 2024 */ 2025 for (i = 0; i < h->ndevices; i++) { 2026 if (h->dev[i] == NULL) 2027 continue; 2028 h->dev[i]->offload_enabled = h->dev[i]->offload_to_be_enabled; 2029 } 2030 2031 spin_unlock_irqrestore(&h->devlock, flags); 2032 2033 /* Monitor devices which are in one of several NOT READY states to be 2034 * brought online later. This must be done without holding h->devlock, 2035 * so don't touch h->dev[] 2036 */ 2037 for (i = 0; i < nsds; i++) { 2038 if (!sd[i]) /* if already added above. */ 2039 continue; 2040 if (sd[i]->volume_offline) 2041 hpsa_monitor_offline_device(h, sd[i]->scsi3addr); 2042 } 2043 2044 /* Don't notify scsi mid layer of any changes the first time through 2045 * (or if there are no changes) scsi_scan_host will do it later the 2046 * first time through. 2047 */ 2048 if (!changes) 2049 goto free_and_out; 2050 2051 /* Notify scsi mid layer of any removed devices */ 2052 for (i = 0; i < nremoved; i++) { 2053 if (removed[i] == NULL) 2054 continue; 2055 if (removed[i]->expose_device) 2056 hpsa_remove_device(h, removed[i]); 2057 kfree(removed[i]); 2058 removed[i] = NULL; 2059 } 2060 2061 /* Notify scsi mid layer of any added devices */ 2062 for (i = 0; i < nadded; i++) { 2063 int rc = 0; 2064 2065 if (added[i] == NULL) 2066 continue; 2067 if (!(added[i]->expose_device)) 2068 continue; 2069 rc = hpsa_add_device(h, added[i]); 2070 if (!rc) 2071 continue; 2072 dev_warn(&h->pdev->dev, 2073 "addition failed %d, device not added.", rc); 2074 /* now we have to remove it from h->dev, 2075 * since it didn't get added to scsi mid layer 2076 */ 2077 fixup_botched_add(h, added[i]); 2078 h->drv_req_rescan = 1; 2079 } 2080 2081 free_and_out: 2082 kfree(added); 2083 kfree(removed); 2084 } 2085 2086 /* 2087 * Lookup bus/target/lun and return corresponding struct hpsa_scsi_dev_t * 2088 * Assume's h->devlock is held. 2089 */ 2090 static struct hpsa_scsi_dev_t *lookup_hpsa_scsi_dev(struct ctlr_info *h, 2091 int bus, int target, int lun) 2092 { 2093 int i; 2094 struct hpsa_scsi_dev_t *sd; 2095 2096 for (i = 0; i < h->ndevices; i++) { 2097 sd = h->dev[i]; 2098 if (sd->bus == bus && sd->target == target && sd->lun == lun) 2099 return sd; 2100 } 2101 return NULL; 2102 } 2103 2104 static int hpsa_slave_alloc(struct scsi_device *sdev) 2105 { 2106 struct hpsa_scsi_dev_t *sd = NULL; 2107 unsigned long flags; 2108 struct ctlr_info *h; 2109 2110 h = sdev_to_hba(sdev); 2111 spin_lock_irqsave(&h->devlock, flags); 2112 if (sdev_channel(sdev) == HPSA_PHYSICAL_DEVICE_BUS) { 2113 struct scsi_target *starget; 2114 struct sas_rphy *rphy; 2115 2116 starget = scsi_target(sdev); 2117 rphy = target_to_rphy(starget); 2118 sd = hpsa_find_device_by_sas_rphy(h, rphy); 2119 if (sd) { 2120 sd->target = sdev_id(sdev); 2121 sd->lun = sdev->lun; 2122 } 2123 } 2124 if (!sd) 2125 sd = lookup_hpsa_scsi_dev(h, sdev_channel(sdev), 2126 sdev_id(sdev), sdev->lun); 2127 2128 if (sd && sd->expose_device) { 2129 atomic_set(&sd->ioaccel_cmds_out, 0); 2130 sdev->hostdata = sd; 2131 } else 2132 sdev->hostdata = NULL; 2133 spin_unlock_irqrestore(&h->devlock, flags); 2134 return 0; 2135 } 2136 2137 /* configure scsi device based on internal per-device structure */ 2138 #define CTLR_TIMEOUT (120 * HZ) 2139 static int hpsa_slave_configure(struct scsi_device *sdev) 2140 { 2141 struct hpsa_scsi_dev_t *sd; 2142 int queue_depth; 2143 2144 sd = sdev->hostdata; 2145 sdev->no_uld_attach = !sd || !sd->expose_device; 2146 2147 if (sd) { 2148 sd->was_removed = 0; 2149 queue_depth = sd->queue_depth != 0 ? 2150 sd->queue_depth : sdev->host->can_queue; 2151 if (sd->external) { 2152 queue_depth = EXTERNAL_QD; 2153 sdev->eh_timeout = HPSA_EH_PTRAID_TIMEOUT; 2154 blk_queue_rq_timeout(sdev->request_queue, 2155 HPSA_EH_PTRAID_TIMEOUT); 2156 } 2157 if (is_hba_lunid(sd->scsi3addr)) { 2158 sdev->eh_timeout = CTLR_TIMEOUT; 2159 blk_queue_rq_timeout(sdev->request_queue, CTLR_TIMEOUT); 2160 } 2161 } else { 2162 queue_depth = sdev->host->can_queue; 2163 } 2164 2165 scsi_change_queue_depth(sdev, queue_depth); 2166 2167 return 0; 2168 } 2169 2170 static void hpsa_slave_destroy(struct scsi_device *sdev) 2171 { 2172 struct hpsa_scsi_dev_t *hdev = NULL; 2173 2174 hdev = sdev->hostdata; 2175 2176 if (hdev) 2177 hdev->was_removed = 1; 2178 } 2179 2180 static void hpsa_free_ioaccel2_sg_chain_blocks(struct ctlr_info *h) 2181 { 2182 int i; 2183 2184 if (!h->ioaccel2_cmd_sg_list) 2185 return; 2186 for (i = 0; i < h->nr_cmds; i++) { 2187 kfree(h->ioaccel2_cmd_sg_list[i]); 2188 h->ioaccel2_cmd_sg_list[i] = NULL; 2189 } 2190 kfree(h->ioaccel2_cmd_sg_list); 2191 h->ioaccel2_cmd_sg_list = NULL; 2192 } 2193 2194 static int hpsa_allocate_ioaccel2_sg_chain_blocks(struct ctlr_info *h) 2195 { 2196 int i; 2197 2198 if (h->chainsize <= 0) 2199 return 0; 2200 2201 h->ioaccel2_cmd_sg_list = 2202 kcalloc(h->nr_cmds, sizeof(*h->ioaccel2_cmd_sg_list), 2203 GFP_KERNEL); 2204 if (!h->ioaccel2_cmd_sg_list) 2205 return -ENOMEM; 2206 for (i = 0; i < h->nr_cmds; i++) { 2207 h->ioaccel2_cmd_sg_list[i] = 2208 kmalloc_array(h->maxsgentries, 2209 sizeof(*h->ioaccel2_cmd_sg_list[i]), 2210 GFP_KERNEL); 2211 if (!h->ioaccel2_cmd_sg_list[i]) 2212 goto clean; 2213 } 2214 return 0; 2215 2216 clean: 2217 hpsa_free_ioaccel2_sg_chain_blocks(h); 2218 return -ENOMEM; 2219 } 2220 2221 static void hpsa_free_sg_chain_blocks(struct ctlr_info *h) 2222 { 2223 int i; 2224 2225 if (!h->cmd_sg_list) 2226 return; 2227 for (i = 0; i < h->nr_cmds; i++) { 2228 kfree(h->cmd_sg_list[i]); 2229 h->cmd_sg_list[i] = NULL; 2230 } 2231 kfree(h->cmd_sg_list); 2232 h->cmd_sg_list = NULL; 2233 } 2234 2235 static int hpsa_alloc_sg_chain_blocks(struct ctlr_info *h) 2236 { 2237 int i; 2238 2239 if (h->chainsize <= 0) 2240 return 0; 2241 2242 h->cmd_sg_list = kcalloc(h->nr_cmds, sizeof(*h->cmd_sg_list), 2243 GFP_KERNEL); 2244 if (!h->cmd_sg_list) 2245 return -ENOMEM; 2246 2247 for (i = 0; i < h->nr_cmds; i++) { 2248 h->cmd_sg_list[i] = kmalloc_array(h->chainsize, 2249 sizeof(*h->cmd_sg_list[i]), 2250 GFP_KERNEL); 2251 if (!h->cmd_sg_list[i]) 2252 goto clean; 2253 2254 } 2255 return 0; 2256 2257 clean: 2258 hpsa_free_sg_chain_blocks(h); 2259 return -ENOMEM; 2260 } 2261 2262 static int hpsa_map_ioaccel2_sg_chain_block(struct ctlr_info *h, 2263 struct io_accel2_cmd *cp, struct CommandList *c) 2264 { 2265 struct ioaccel2_sg_element *chain_block; 2266 u64 temp64; 2267 u32 chain_size; 2268 2269 chain_block = h->ioaccel2_cmd_sg_list[c->cmdindex]; 2270 chain_size = le32_to_cpu(cp->sg[0].length); 2271 temp64 = dma_map_single(&h->pdev->dev, chain_block, chain_size, 2272 DMA_TO_DEVICE); 2273 if (dma_mapping_error(&h->pdev->dev, temp64)) { 2274 /* prevent subsequent unmapping */ 2275 cp->sg->address = 0; 2276 return -1; 2277 } 2278 cp->sg->address = cpu_to_le64(temp64); 2279 return 0; 2280 } 2281 2282 static void hpsa_unmap_ioaccel2_sg_chain_block(struct ctlr_info *h, 2283 struct io_accel2_cmd *cp) 2284 { 2285 struct ioaccel2_sg_element *chain_sg; 2286 u64 temp64; 2287 u32 chain_size; 2288 2289 chain_sg = cp->sg; 2290 temp64 = le64_to_cpu(chain_sg->address); 2291 chain_size = le32_to_cpu(cp->sg[0].length); 2292 dma_unmap_single(&h->pdev->dev, temp64, chain_size, DMA_TO_DEVICE); 2293 } 2294 2295 static int hpsa_map_sg_chain_block(struct ctlr_info *h, 2296 struct CommandList *c) 2297 { 2298 struct SGDescriptor *chain_sg, *chain_block; 2299 u64 temp64; 2300 u32 chain_len; 2301 2302 chain_sg = &c->SG[h->max_cmd_sg_entries - 1]; 2303 chain_block = h->cmd_sg_list[c->cmdindex]; 2304 chain_sg->Ext = cpu_to_le32(HPSA_SG_CHAIN); 2305 chain_len = sizeof(*chain_sg) * 2306 (le16_to_cpu(c->Header.SGTotal) - h->max_cmd_sg_entries); 2307 chain_sg->Len = cpu_to_le32(chain_len); 2308 temp64 = dma_map_single(&h->pdev->dev, chain_block, chain_len, 2309 DMA_TO_DEVICE); 2310 if (dma_mapping_error(&h->pdev->dev, temp64)) { 2311 /* prevent subsequent unmapping */ 2312 chain_sg->Addr = cpu_to_le64(0); 2313 return -1; 2314 } 2315 chain_sg->Addr = cpu_to_le64(temp64); 2316 return 0; 2317 } 2318 2319 static void hpsa_unmap_sg_chain_block(struct ctlr_info *h, 2320 struct CommandList *c) 2321 { 2322 struct SGDescriptor *chain_sg; 2323 2324 if (le16_to_cpu(c->Header.SGTotal) <= h->max_cmd_sg_entries) 2325 return; 2326 2327 chain_sg = &c->SG[h->max_cmd_sg_entries - 1]; 2328 dma_unmap_single(&h->pdev->dev, le64_to_cpu(chain_sg->Addr), 2329 le32_to_cpu(chain_sg->Len), DMA_TO_DEVICE); 2330 } 2331 2332 2333 /* Decode the various types of errors on ioaccel2 path. 2334 * Return 1 for any error that should generate a RAID path retry. 2335 * Return 0 for errors that don't require a RAID path retry. 2336 */ 2337 static int handle_ioaccel_mode2_error(struct ctlr_info *h, 2338 struct CommandList *c, 2339 struct scsi_cmnd *cmd, 2340 struct io_accel2_cmd *c2, 2341 struct hpsa_scsi_dev_t *dev) 2342 { 2343 int data_len; 2344 int retry = 0; 2345 u32 ioaccel2_resid = 0; 2346 2347 switch (c2->error_data.serv_response) { 2348 case IOACCEL2_SERV_RESPONSE_COMPLETE: 2349 switch (c2->error_data.status) { 2350 case IOACCEL2_STATUS_SR_TASK_COMP_GOOD: 2351 if (cmd) 2352 cmd->result = 0; 2353 break; 2354 case IOACCEL2_STATUS_SR_TASK_COMP_CHK_COND: 2355 cmd->result |= SAM_STAT_CHECK_CONDITION; 2356 if (c2->error_data.data_present != 2357 IOACCEL2_SENSE_DATA_PRESENT) { 2358 memset(cmd->sense_buffer, 0, 2359 SCSI_SENSE_BUFFERSIZE); 2360 break; 2361 } 2362 /* copy the sense data */ 2363 data_len = c2->error_data.sense_data_len; 2364 if (data_len > SCSI_SENSE_BUFFERSIZE) 2365 data_len = SCSI_SENSE_BUFFERSIZE; 2366 if (data_len > sizeof(c2->error_data.sense_data_buff)) 2367 data_len = 2368 sizeof(c2->error_data.sense_data_buff); 2369 memcpy(cmd->sense_buffer, 2370 c2->error_data.sense_data_buff, data_len); 2371 retry = 1; 2372 break; 2373 case IOACCEL2_STATUS_SR_TASK_COMP_BUSY: 2374 retry = 1; 2375 break; 2376 case IOACCEL2_STATUS_SR_TASK_COMP_RES_CON: 2377 retry = 1; 2378 break; 2379 case IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL: 2380 retry = 1; 2381 break; 2382 case IOACCEL2_STATUS_SR_TASK_COMP_ABORTED: 2383 retry = 1; 2384 break; 2385 default: 2386 retry = 1; 2387 break; 2388 } 2389 break; 2390 case IOACCEL2_SERV_RESPONSE_FAILURE: 2391 switch (c2->error_data.status) { 2392 case IOACCEL2_STATUS_SR_IO_ERROR: 2393 case IOACCEL2_STATUS_SR_IO_ABORTED: 2394 case IOACCEL2_STATUS_SR_OVERRUN: 2395 retry = 1; 2396 break; 2397 case IOACCEL2_STATUS_SR_UNDERRUN: 2398 cmd->result = (DID_OK << 16); /* host byte */ 2399 cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */ 2400 ioaccel2_resid = get_unaligned_le32( 2401 &c2->error_data.resid_cnt[0]); 2402 scsi_set_resid(cmd, ioaccel2_resid); 2403 break; 2404 case IOACCEL2_STATUS_SR_NO_PATH_TO_DEVICE: 2405 case IOACCEL2_STATUS_SR_INVALID_DEVICE: 2406 case IOACCEL2_STATUS_SR_IOACCEL_DISABLED: 2407 /* 2408 * Did an HBA disk disappear? We will eventually 2409 * get a state change event from the controller but 2410 * in the meantime, we need to tell the OS that the 2411 * HBA disk is no longer there and stop I/O 2412 * from going down. This allows the potential re-insert 2413 * of the disk to get the same device node. 2414 */ 2415 if (dev->physical_device && dev->expose_device) { 2416 cmd->result = DID_NO_CONNECT << 16; 2417 dev->removed = 1; 2418 h->drv_req_rescan = 1; 2419 dev_warn(&h->pdev->dev, 2420 "%s: device is gone!\n", __func__); 2421 } else 2422 /* 2423 * Retry by sending down the RAID path. 2424 * We will get an event from ctlr to 2425 * trigger rescan regardless. 2426 */ 2427 retry = 1; 2428 break; 2429 default: 2430 retry = 1; 2431 } 2432 break; 2433 case IOACCEL2_SERV_RESPONSE_TMF_COMPLETE: 2434 break; 2435 case IOACCEL2_SERV_RESPONSE_TMF_SUCCESS: 2436 break; 2437 case IOACCEL2_SERV_RESPONSE_TMF_REJECTED: 2438 retry = 1; 2439 break; 2440 case IOACCEL2_SERV_RESPONSE_TMF_WRONG_LUN: 2441 break; 2442 default: 2443 retry = 1; 2444 break; 2445 } 2446 2447 if (dev->in_reset) 2448 retry = 0; 2449 2450 return retry; /* retry on raid path? */ 2451 } 2452 2453 static void hpsa_cmd_resolve_events(struct ctlr_info *h, 2454 struct CommandList *c) 2455 { 2456 struct hpsa_scsi_dev_t *dev = c->device; 2457 2458 /* 2459 * Reset c->scsi_cmd here so that the reset handler will know 2460 * this command has completed. Then, check to see if the handler is 2461 * waiting for this command, and, if so, wake it. 2462 */ 2463 c->scsi_cmd = SCSI_CMD_IDLE; 2464 mb(); /* Declare command idle before checking for pending events. */ 2465 if (dev) { 2466 atomic_dec(&dev->commands_outstanding); 2467 if (dev->in_reset && 2468 atomic_read(&dev->commands_outstanding) <= 0) 2469 wake_up_all(&h->event_sync_wait_queue); 2470 } 2471 } 2472 2473 static void hpsa_cmd_resolve_and_free(struct ctlr_info *h, 2474 struct CommandList *c) 2475 { 2476 hpsa_cmd_resolve_events(h, c); 2477 cmd_tagged_free(h, c); 2478 } 2479 2480 static void hpsa_cmd_free_and_done(struct ctlr_info *h, 2481 struct CommandList *c, struct scsi_cmnd *cmd) 2482 { 2483 hpsa_cmd_resolve_and_free(h, c); 2484 if (cmd && cmd->scsi_done) 2485 cmd->scsi_done(cmd); 2486 } 2487 2488 static void hpsa_retry_cmd(struct ctlr_info *h, struct CommandList *c) 2489 { 2490 INIT_WORK(&c->work, hpsa_command_resubmit_worker); 2491 queue_work_on(raw_smp_processor_id(), h->resubmit_wq, &c->work); 2492 } 2493 2494 static void process_ioaccel2_completion(struct ctlr_info *h, 2495 struct CommandList *c, struct scsi_cmnd *cmd, 2496 struct hpsa_scsi_dev_t *dev) 2497 { 2498 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex]; 2499 2500 /* check for good status */ 2501 if (likely(c2->error_data.serv_response == 0 && 2502 c2->error_data.status == 0)) { 2503 cmd->result = 0; 2504 return hpsa_cmd_free_and_done(h, c, cmd); 2505 } 2506 2507 /* 2508 * Any RAID offload error results in retry which will use 2509 * the normal I/O path so the controller can handle whatever is 2510 * wrong. 2511 */ 2512 if (is_logical_device(dev) && 2513 c2->error_data.serv_response == 2514 IOACCEL2_SERV_RESPONSE_FAILURE) { 2515 if (c2->error_data.status == 2516 IOACCEL2_STATUS_SR_IOACCEL_DISABLED) { 2517 hpsa_turn_off_ioaccel_for_device(dev); 2518 } 2519 2520 if (dev->in_reset) { 2521 cmd->result = DID_RESET << 16; 2522 return hpsa_cmd_free_and_done(h, c, cmd); 2523 } 2524 2525 return hpsa_retry_cmd(h, c); 2526 } 2527 2528 if (handle_ioaccel_mode2_error(h, c, cmd, c2, dev)) 2529 return hpsa_retry_cmd(h, c); 2530 2531 return hpsa_cmd_free_and_done(h, c, cmd); 2532 } 2533 2534 /* Returns 0 on success, < 0 otherwise. */ 2535 static int hpsa_evaluate_tmf_status(struct ctlr_info *h, 2536 struct CommandList *cp) 2537 { 2538 u8 tmf_status = cp->err_info->ScsiStatus; 2539 2540 switch (tmf_status) { 2541 case CISS_TMF_COMPLETE: 2542 /* 2543 * CISS_TMF_COMPLETE never happens, instead, 2544 * ei->CommandStatus == 0 for this case. 2545 */ 2546 case CISS_TMF_SUCCESS: 2547 return 0; 2548 case CISS_TMF_INVALID_FRAME: 2549 case CISS_TMF_NOT_SUPPORTED: 2550 case CISS_TMF_FAILED: 2551 case CISS_TMF_WRONG_LUN: 2552 case CISS_TMF_OVERLAPPED_TAG: 2553 break; 2554 default: 2555 dev_warn(&h->pdev->dev, "Unknown TMF status: 0x%02x\n", 2556 tmf_status); 2557 break; 2558 } 2559 return -tmf_status; 2560 } 2561 2562 static void complete_scsi_command(struct CommandList *cp) 2563 { 2564 struct scsi_cmnd *cmd; 2565 struct ctlr_info *h; 2566 struct ErrorInfo *ei; 2567 struct hpsa_scsi_dev_t *dev; 2568 struct io_accel2_cmd *c2; 2569 2570 u8 sense_key; 2571 u8 asc; /* additional sense code */ 2572 u8 ascq; /* additional sense code qualifier */ 2573 unsigned long sense_data_size; 2574 2575 ei = cp->err_info; 2576 cmd = cp->scsi_cmd; 2577 h = cp->h; 2578 2579 if (!cmd->device) { 2580 cmd->result = DID_NO_CONNECT << 16; 2581 return hpsa_cmd_free_and_done(h, cp, cmd); 2582 } 2583 2584 dev = cmd->device->hostdata; 2585 if (!dev) { 2586 cmd->result = DID_NO_CONNECT << 16; 2587 return hpsa_cmd_free_and_done(h, cp, cmd); 2588 } 2589 c2 = &h->ioaccel2_cmd_pool[cp->cmdindex]; 2590 2591 scsi_dma_unmap(cmd); /* undo the DMA mappings */ 2592 if ((cp->cmd_type == CMD_SCSI) && 2593 (le16_to_cpu(cp->Header.SGTotal) > h->max_cmd_sg_entries)) 2594 hpsa_unmap_sg_chain_block(h, cp); 2595 2596 if ((cp->cmd_type == CMD_IOACCEL2) && 2597 (c2->sg[0].chain_indicator == IOACCEL2_CHAIN)) 2598 hpsa_unmap_ioaccel2_sg_chain_block(h, c2); 2599 2600 cmd->result = (DID_OK << 16); /* host byte */ 2601 cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */ 2602 2603 /* SCSI command has already been cleaned up in SML */ 2604 if (dev->was_removed) { 2605 hpsa_cmd_resolve_and_free(h, cp); 2606 return; 2607 } 2608 2609 if (cp->cmd_type == CMD_IOACCEL2 || cp->cmd_type == CMD_IOACCEL1) { 2610 if (dev->physical_device && dev->expose_device && 2611 dev->removed) { 2612 cmd->result = DID_NO_CONNECT << 16; 2613 return hpsa_cmd_free_and_done(h, cp, cmd); 2614 } 2615 if (likely(cp->phys_disk != NULL)) 2616 atomic_dec(&cp->phys_disk->ioaccel_cmds_out); 2617 } 2618 2619 /* 2620 * We check for lockup status here as it may be set for 2621 * CMD_SCSI, CMD_IOACCEL1 and CMD_IOACCEL2 commands by 2622 * fail_all_oustanding_cmds() 2623 */ 2624 if (unlikely(ei->CommandStatus == CMD_CTLR_LOCKUP)) { 2625 /* DID_NO_CONNECT will prevent a retry */ 2626 cmd->result = DID_NO_CONNECT << 16; 2627 return hpsa_cmd_free_and_done(h, cp, cmd); 2628 } 2629 2630 if (cp->cmd_type == CMD_IOACCEL2) 2631 return process_ioaccel2_completion(h, cp, cmd, dev); 2632 2633 scsi_set_resid(cmd, ei->ResidualCnt); 2634 if (ei->CommandStatus == 0) 2635 return hpsa_cmd_free_and_done(h, cp, cmd); 2636 2637 /* For I/O accelerator commands, copy over some fields to the normal 2638 * CISS header used below for error handling. 2639 */ 2640 if (cp->cmd_type == CMD_IOACCEL1) { 2641 struct io_accel1_cmd *c = &h->ioaccel_cmd_pool[cp->cmdindex]; 2642 cp->Header.SGList = scsi_sg_count(cmd); 2643 cp->Header.SGTotal = cpu_to_le16(cp->Header.SGList); 2644 cp->Request.CDBLen = le16_to_cpu(c->io_flags) & 2645 IOACCEL1_IOFLAGS_CDBLEN_MASK; 2646 cp->Header.tag = c->tag; 2647 memcpy(cp->Header.LUN.LunAddrBytes, c->CISS_LUN, 8); 2648 memcpy(cp->Request.CDB, c->CDB, cp->Request.CDBLen); 2649 2650 /* Any RAID offload error results in retry which will use 2651 * the normal I/O path so the controller can handle whatever's 2652 * wrong. 2653 */ 2654 if (is_logical_device(dev)) { 2655 if (ei->CommandStatus == CMD_IOACCEL_DISABLED) 2656 dev->offload_enabled = 0; 2657 return hpsa_retry_cmd(h, cp); 2658 } 2659 } 2660 2661 /* an error has occurred */ 2662 switch (ei->CommandStatus) { 2663 2664 case CMD_TARGET_STATUS: 2665 cmd->result |= ei->ScsiStatus; 2666 /* copy the sense data */ 2667 if (SCSI_SENSE_BUFFERSIZE < sizeof(ei->SenseInfo)) 2668 sense_data_size = SCSI_SENSE_BUFFERSIZE; 2669 else 2670 sense_data_size = sizeof(ei->SenseInfo); 2671 if (ei->SenseLen < sense_data_size) 2672 sense_data_size = ei->SenseLen; 2673 memcpy(cmd->sense_buffer, ei->SenseInfo, sense_data_size); 2674 if (ei->ScsiStatus) 2675 decode_sense_data(ei->SenseInfo, sense_data_size, 2676 &sense_key, &asc, &ascq); 2677 if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION) { 2678 switch (sense_key) { 2679 case ABORTED_COMMAND: 2680 cmd->result |= DID_SOFT_ERROR << 16; 2681 break; 2682 case UNIT_ATTENTION: 2683 if (asc == 0x3F && ascq == 0x0E) 2684 h->drv_req_rescan = 1; 2685 break; 2686 case ILLEGAL_REQUEST: 2687 if (asc == 0x25 && ascq == 0x00) { 2688 dev->removed = 1; 2689 cmd->result = DID_NO_CONNECT << 16; 2690 } 2691 break; 2692 } 2693 break; 2694 } 2695 /* Problem was not a check condition 2696 * Pass it up to the upper layers... 2697 */ 2698 if (ei->ScsiStatus) { 2699 dev_warn(&h->pdev->dev, "cp %p has status 0x%x " 2700 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, " 2701 "Returning result: 0x%x\n", 2702 cp, ei->ScsiStatus, 2703 sense_key, asc, ascq, 2704 cmd->result); 2705 } else { /* scsi status is zero??? How??? */ 2706 dev_warn(&h->pdev->dev, "cp %p SCSI status was 0. " 2707 "Returning no connection.\n", cp), 2708 2709 /* Ordinarily, this case should never happen, 2710 * but there is a bug in some released firmware 2711 * revisions that allows it to happen if, for 2712 * example, a 4100 backplane loses power and 2713 * the tape drive is in it. We assume that 2714 * it's a fatal error of some kind because we 2715 * can't show that it wasn't. We will make it 2716 * look like selection timeout since that is 2717 * the most common reason for this to occur, 2718 * and it's severe enough. 2719 */ 2720 2721 cmd->result = DID_NO_CONNECT << 16; 2722 } 2723 break; 2724 2725 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */ 2726 break; 2727 case CMD_DATA_OVERRUN: 2728 dev_warn(&h->pdev->dev, 2729 "CDB %16phN data overrun\n", cp->Request.CDB); 2730 break; 2731 case CMD_INVALID: { 2732 /* print_bytes(cp, sizeof(*cp), 1, 0); 2733 print_cmd(cp); */ 2734 /* We get CMD_INVALID if you address a non-existent device 2735 * instead of a selection timeout (no response). You will 2736 * see this if you yank out a drive, then try to access it. 2737 * This is kind of a shame because it means that any other 2738 * CMD_INVALID (e.g. driver bug) will get interpreted as a 2739 * missing target. */ 2740 cmd->result = DID_NO_CONNECT << 16; 2741 } 2742 break; 2743 case CMD_PROTOCOL_ERR: 2744 cmd->result = DID_ERROR << 16; 2745 dev_warn(&h->pdev->dev, "CDB %16phN : protocol error\n", 2746 cp->Request.CDB); 2747 break; 2748 case CMD_HARDWARE_ERR: 2749 cmd->result = DID_ERROR << 16; 2750 dev_warn(&h->pdev->dev, "CDB %16phN : hardware error\n", 2751 cp->Request.CDB); 2752 break; 2753 case CMD_CONNECTION_LOST: 2754 cmd->result = DID_ERROR << 16; 2755 dev_warn(&h->pdev->dev, "CDB %16phN : connection lost\n", 2756 cp->Request.CDB); 2757 break; 2758 case CMD_ABORTED: 2759 cmd->result = DID_ABORT << 16; 2760 break; 2761 case CMD_ABORT_FAILED: 2762 cmd->result = DID_ERROR << 16; 2763 dev_warn(&h->pdev->dev, "CDB %16phN : abort failed\n", 2764 cp->Request.CDB); 2765 break; 2766 case CMD_UNSOLICITED_ABORT: 2767 cmd->result = DID_SOFT_ERROR << 16; /* retry the command */ 2768 dev_warn(&h->pdev->dev, "CDB %16phN : unsolicited abort\n", 2769 cp->Request.CDB); 2770 break; 2771 case CMD_TIMEOUT: 2772 cmd->result = DID_TIME_OUT << 16; 2773 dev_warn(&h->pdev->dev, "CDB %16phN timed out\n", 2774 cp->Request.CDB); 2775 break; 2776 case CMD_UNABORTABLE: 2777 cmd->result = DID_ERROR << 16; 2778 dev_warn(&h->pdev->dev, "Command unabortable\n"); 2779 break; 2780 case CMD_TMF_STATUS: 2781 if (hpsa_evaluate_tmf_status(h, cp)) /* TMF failed? */ 2782 cmd->result = DID_ERROR << 16; 2783 break; 2784 case CMD_IOACCEL_DISABLED: 2785 /* This only handles the direct pass-through case since RAID 2786 * offload is handled above. Just attempt a retry. 2787 */ 2788 cmd->result = DID_SOFT_ERROR << 16; 2789 dev_warn(&h->pdev->dev, 2790 "cp %p had HP SSD Smart Path error\n", cp); 2791 break; 2792 default: 2793 cmd->result = DID_ERROR << 16; 2794 dev_warn(&h->pdev->dev, "cp %p returned unknown status %x\n", 2795 cp, ei->CommandStatus); 2796 } 2797 2798 return hpsa_cmd_free_and_done(h, cp, cmd); 2799 } 2800 2801 static void hpsa_pci_unmap(struct pci_dev *pdev, struct CommandList *c, 2802 int sg_used, enum dma_data_direction data_direction) 2803 { 2804 int i; 2805 2806 for (i = 0; i < sg_used; i++) 2807 dma_unmap_single(&pdev->dev, le64_to_cpu(c->SG[i].Addr), 2808 le32_to_cpu(c->SG[i].Len), 2809 data_direction); 2810 } 2811 2812 static int hpsa_map_one(struct pci_dev *pdev, 2813 struct CommandList *cp, 2814 unsigned char *buf, 2815 size_t buflen, 2816 enum dma_data_direction data_direction) 2817 { 2818 u64 addr64; 2819 2820 if (buflen == 0 || data_direction == DMA_NONE) { 2821 cp->Header.SGList = 0; 2822 cp->Header.SGTotal = cpu_to_le16(0); 2823 return 0; 2824 } 2825 2826 addr64 = dma_map_single(&pdev->dev, buf, buflen, data_direction); 2827 if (dma_mapping_error(&pdev->dev, addr64)) { 2828 /* Prevent subsequent unmap of something never mapped */ 2829 cp->Header.SGList = 0; 2830 cp->Header.SGTotal = cpu_to_le16(0); 2831 return -1; 2832 } 2833 cp->SG[0].Addr = cpu_to_le64(addr64); 2834 cp->SG[0].Len = cpu_to_le32(buflen); 2835 cp->SG[0].Ext = cpu_to_le32(HPSA_SG_LAST); /* we are not chaining */ 2836 cp->Header.SGList = 1; /* no. SGs contig in this cmd */ 2837 cp->Header.SGTotal = cpu_to_le16(1); /* total sgs in cmd list */ 2838 return 0; 2839 } 2840 2841 #define NO_TIMEOUT ((unsigned long) -1) 2842 #define DEFAULT_TIMEOUT 30000 /* milliseconds */ 2843 static int hpsa_scsi_do_simple_cmd_core(struct ctlr_info *h, 2844 struct CommandList *c, int reply_queue, unsigned long timeout_msecs) 2845 { 2846 DECLARE_COMPLETION_ONSTACK(wait); 2847 2848 c->waiting = &wait; 2849 __enqueue_cmd_and_start_io(h, c, reply_queue); 2850 if (timeout_msecs == NO_TIMEOUT) { 2851 /* TODO: get rid of this no-timeout thing */ 2852 wait_for_completion_io(&wait); 2853 return IO_OK; 2854 } 2855 if (!wait_for_completion_io_timeout(&wait, 2856 msecs_to_jiffies(timeout_msecs))) { 2857 dev_warn(&h->pdev->dev, "Command timed out.\n"); 2858 return -ETIMEDOUT; 2859 } 2860 return IO_OK; 2861 } 2862 2863 static int hpsa_scsi_do_simple_cmd(struct ctlr_info *h, struct CommandList *c, 2864 int reply_queue, unsigned long timeout_msecs) 2865 { 2866 if (unlikely(lockup_detected(h))) { 2867 c->err_info->CommandStatus = CMD_CTLR_LOCKUP; 2868 return IO_OK; 2869 } 2870 return hpsa_scsi_do_simple_cmd_core(h, c, reply_queue, timeout_msecs); 2871 } 2872 2873 static u32 lockup_detected(struct ctlr_info *h) 2874 { 2875 int cpu; 2876 u32 rc, *lockup_detected; 2877 2878 cpu = get_cpu(); 2879 lockup_detected = per_cpu_ptr(h->lockup_detected, cpu); 2880 rc = *lockup_detected; 2881 put_cpu(); 2882 return rc; 2883 } 2884 2885 #define MAX_DRIVER_CMD_RETRIES 25 2886 static int hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info *h, 2887 struct CommandList *c, enum dma_data_direction data_direction, 2888 unsigned long timeout_msecs) 2889 { 2890 int backoff_time = 10, retry_count = 0; 2891 int rc; 2892 2893 do { 2894 memset(c->err_info, 0, sizeof(*c->err_info)); 2895 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, 2896 timeout_msecs); 2897 if (rc) 2898 break; 2899 retry_count++; 2900 if (retry_count > 3) { 2901 msleep(backoff_time); 2902 if (backoff_time < 1000) 2903 backoff_time *= 2; 2904 } 2905 } while ((check_for_unit_attention(h, c) || 2906 check_for_busy(h, c)) && 2907 retry_count <= MAX_DRIVER_CMD_RETRIES); 2908 hpsa_pci_unmap(h->pdev, c, 1, data_direction); 2909 if (retry_count > MAX_DRIVER_CMD_RETRIES) 2910 rc = -EIO; 2911 return rc; 2912 } 2913 2914 static void hpsa_print_cmd(struct ctlr_info *h, char *txt, 2915 struct CommandList *c) 2916 { 2917 const u8 *cdb = c->Request.CDB; 2918 const u8 *lun = c->Header.LUN.LunAddrBytes; 2919 2920 dev_warn(&h->pdev->dev, "%s: LUN:%8phN CDB:%16phN\n", 2921 txt, lun, cdb); 2922 } 2923 2924 static void hpsa_scsi_interpret_error(struct ctlr_info *h, 2925 struct CommandList *cp) 2926 { 2927 const struct ErrorInfo *ei = cp->err_info; 2928 struct device *d = &cp->h->pdev->dev; 2929 u8 sense_key, asc, ascq; 2930 int sense_len; 2931 2932 switch (ei->CommandStatus) { 2933 case CMD_TARGET_STATUS: 2934 if (ei->SenseLen > sizeof(ei->SenseInfo)) 2935 sense_len = sizeof(ei->SenseInfo); 2936 else 2937 sense_len = ei->SenseLen; 2938 decode_sense_data(ei->SenseInfo, sense_len, 2939 &sense_key, &asc, &ascq); 2940 hpsa_print_cmd(h, "SCSI status", cp); 2941 if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION) 2942 dev_warn(d, "SCSI Status = 02, Sense key = 0x%02x, ASC = 0x%02x, ASCQ = 0x%02x\n", 2943 sense_key, asc, ascq); 2944 else 2945 dev_warn(d, "SCSI Status = 0x%02x\n", ei->ScsiStatus); 2946 if (ei->ScsiStatus == 0) 2947 dev_warn(d, "SCSI status is abnormally zero. " 2948 "(probably indicates selection timeout " 2949 "reported incorrectly due to a known " 2950 "firmware bug, circa July, 2001.)\n"); 2951 break; 2952 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */ 2953 break; 2954 case CMD_DATA_OVERRUN: 2955 hpsa_print_cmd(h, "overrun condition", cp); 2956 break; 2957 case CMD_INVALID: { 2958 /* controller unfortunately reports SCSI passthru's 2959 * to non-existent targets as invalid commands. 2960 */ 2961 hpsa_print_cmd(h, "invalid command", cp); 2962 dev_warn(d, "probably means device no longer present\n"); 2963 } 2964 break; 2965 case CMD_PROTOCOL_ERR: 2966 hpsa_print_cmd(h, "protocol error", cp); 2967 break; 2968 case CMD_HARDWARE_ERR: 2969 hpsa_print_cmd(h, "hardware error", cp); 2970 break; 2971 case CMD_CONNECTION_LOST: 2972 hpsa_print_cmd(h, "connection lost", cp); 2973 break; 2974 case CMD_ABORTED: 2975 hpsa_print_cmd(h, "aborted", cp); 2976 break; 2977 case CMD_ABORT_FAILED: 2978 hpsa_print_cmd(h, "abort failed", cp); 2979 break; 2980 case CMD_UNSOLICITED_ABORT: 2981 hpsa_print_cmd(h, "unsolicited abort", cp); 2982 break; 2983 case CMD_TIMEOUT: 2984 hpsa_print_cmd(h, "timed out", cp); 2985 break; 2986 case CMD_UNABORTABLE: 2987 hpsa_print_cmd(h, "unabortable", cp); 2988 break; 2989 case CMD_CTLR_LOCKUP: 2990 hpsa_print_cmd(h, "controller lockup detected", cp); 2991 break; 2992 default: 2993 hpsa_print_cmd(h, "unknown status", cp); 2994 dev_warn(d, "Unknown command status %x\n", 2995 ei->CommandStatus); 2996 } 2997 } 2998 2999 static int hpsa_do_receive_diagnostic(struct ctlr_info *h, u8 *scsi3addr, 3000 u8 page, u8 *buf, size_t bufsize) 3001 { 3002 int rc = IO_OK; 3003 struct CommandList *c; 3004 struct ErrorInfo *ei; 3005 3006 c = cmd_alloc(h); 3007 if (fill_cmd(c, RECEIVE_DIAGNOSTIC, h, buf, bufsize, 3008 page, scsi3addr, TYPE_CMD)) { 3009 rc = -1; 3010 goto out; 3011 } 3012 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE, 3013 NO_TIMEOUT); 3014 if (rc) 3015 goto out; 3016 ei = c->err_info; 3017 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { 3018 hpsa_scsi_interpret_error(h, c); 3019 rc = -1; 3020 } 3021 out: 3022 cmd_free(h, c); 3023 return rc; 3024 } 3025 3026 static u64 hpsa_get_enclosure_logical_identifier(struct ctlr_info *h, 3027 u8 *scsi3addr) 3028 { 3029 u8 *buf; 3030 u64 sa = 0; 3031 int rc = 0; 3032 3033 buf = kzalloc(1024, GFP_KERNEL); 3034 if (!buf) 3035 return 0; 3036 3037 rc = hpsa_do_receive_diagnostic(h, scsi3addr, RECEIVE_DIAGNOSTIC, 3038 buf, 1024); 3039 3040 if (rc) 3041 goto out; 3042 3043 sa = get_unaligned_be64(buf+12); 3044 3045 out: 3046 kfree(buf); 3047 return sa; 3048 } 3049 3050 static int hpsa_scsi_do_inquiry(struct ctlr_info *h, unsigned char *scsi3addr, 3051 u16 page, unsigned char *buf, 3052 unsigned char bufsize) 3053 { 3054 int rc = IO_OK; 3055 struct CommandList *c; 3056 struct ErrorInfo *ei; 3057 3058 c = cmd_alloc(h); 3059 3060 if (fill_cmd(c, HPSA_INQUIRY, h, buf, bufsize, 3061 page, scsi3addr, TYPE_CMD)) { 3062 rc = -1; 3063 goto out; 3064 } 3065 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE, 3066 NO_TIMEOUT); 3067 if (rc) 3068 goto out; 3069 ei = c->err_info; 3070 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { 3071 hpsa_scsi_interpret_error(h, c); 3072 rc = -1; 3073 } 3074 out: 3075 cmd_free(h, c); 3076 return rc; 3077 } 3078 3079 static int hpsa_send_reset(struct ctlr_info *h, struct hpsa_scsi_dev_t *dev, 3080 u8 reset_type, int reply_queue) 3081 { 3082 int rc = IO_OK; 3083 struct CommandList *c; 3084 struct ErrorInfo *ei; 3085 3086 c = cmd_alloc(h); 3087 c->device = dev; 3088 3089 /* fill_cmd can't fail here, no data buffer to map. */ 3090 (void) fill_cmd(c, reset_type, h, NULL, 0, 0, dev->scsi3addr, TYPE_MSG); 3091 rc = hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT); 3092 if (rc) { 3093 dev_warn(&h->pdev->dev, "Failed to send reset command\n"); 3094 goto out; 3095 } 3096 /* no unmap needed here because no data xfer. */ 3097 3098 ei = c->err_info; 3099 if (ei->CommandStatus != 0) { 3100 hpsa_scsi_interpret_error(h, c); 3101 rc = -1; 3102 } 3103 out: 3104 cmd_free(h, c); 3105 return rc; 3106 } 3107 3108 static bool hpsa_cmd_dev_match(struct ctlr_info *h, struct CommandList *c, 3109 struct hpsa_scsi_dev_t *dev, 3110 unsigned char *scsi3addr) 3111 { 3112 int i; 3113 bool match = false; 3114 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex]; 3115 struct hpsa_tmf_struct *ac = (struct hpsa_tmf_struct *) c2; 3116 3117 if (hpsa_is_cmd_idle(c)) 3118 return false; 3119 3120 switch (c->cmd_type) { 3121 case CMD_SCSI: 3122 case CMD_IOCTL_PEND: 3123 match = !memcmp(scsi3addr, &c->Header.LUN.LunAddrBytes, 3124 sizeof(c->Header.LUN.LunAddrBytes)); 3125 break; 3126 3127 case CMD_IOACCEL1: 3128 case CMD_IOACCEL2: 3129 if (c->phys_disk == dev) { 3130 /* HBA mode match */ 3131 match = true; 3132 } else { 3133 /* Possible RAID mode -- check each phys dev. */ 3134 /* FIXME: Do we need to take out a lock here? If 3135 * so, we could just call hpsa_get_pdisk_of_ioaccel2() 3136 * instead. */ 3137 for (i = 0; i < dev->nphysical_disks && !match; i++) { 3138 /* FIXME: an alternate test might be 3139 * 3140 * match = dev->phys_disk[i]->ioaccel_handle 3141 * == c2->scsi_nexus; */ 3142 match = dev->phys_disk[i] == c->phys_disk; 3143 } 3144 } 3145 break; 3146 3147 case IOACCEL2_TMF: 3148 for (i = 0; i < dev->nphysical_disks && !match; i++) { 3149 match = dev->phys_disk[i]->ioaccel_handle == 3150 le32_to_cpu(ac->it_nexus); 3151 } 3152 break; 3153 3154 case 0: /* The command is in the middle of being initialized. */ 3155 match = false; 3156 break; 3157 3158 default: 3159 dev_err(&h->pdev->dev, "unexpected cmd_type: %d\n", 3160 c->cmd_type); 3161 BUG(); 3162 } 3163 3164 return match; 3165 } 3166 3167 static int hpsa_do_reset(struct ctlr_info *h, struct hpsa_scsi_dev_t *dev, 3168 u8 reset_type, int reply_queue) 3169 { 3170 int rc = 0; 3171 3172 /* We can really only handle one reset at a time */ 3173 if (mutex_lock_interruptible(&h->reset_mutex) == -EINTR) { 3174 dev_warn(&h->pdev->dev, "concurrent reset wait interrupted.\n"); 3175 return -EINTR; 3176 } 3177 3178 rc = hpsa_send_reset(h, dev, reset_type, reply_queue); 3179 if (!rc) { 3180 /* incremented by sending the reset request */ 3181 atomic_dec(&dev->commands_outstanding); 3182 wait_event(h->event_sync_wait_queue, 3183 atomic_read(&dev->commands_outstanding) <= 0 || 3184 lockup_detected(h)); 3185 } 3186 3187 if (unlikely(lockup_detected(h))) { 3188 dev_warn(&h->pdev->dev, 3189 "Controller lockup detected during reset wait\n"); 3190 rc = -ENODEV; 3191 } 3192 3193 if (!rc) 3194 rc = wait_for_device_to_become_ready(h, dev->scsi3addr, 0); 3195 3196 mutex_unlock(&h->reset_mutex); 3197 return rc; 3198 } 3199 3200 static void hpsa_get_raid_level(struct ctlr_info *h, 3201 unsigned char *scsi3addr, unsigned char *raid_level) 3202 { 3203 int rc; 3204 unsigned char *buf; 3205 3206 *raid_level = RAID_UNKNOWN; 3207 buf = kzalloc(64, GFP_KERNEL); 3208 if (!buf) 3209 return; 3210 3211 if (!hpsa_vpd_page_supported(h, scsi3addr, 3212 HPSA_VPD_LV_DEVICE_GEOMETRY)) 3213 goto exit; 3214 3215 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | 3216 HPSA_VPD_LV_DEVICE_GEOMETRY, buf, 64); 3217 3218 if (rc == 0) 3219 *raid_level = buf[8]; 3220 if (*raid_level > RAID_UNKNOWN) 3221 *raid_level = RAID_UNKNOWN; 3222 exit: 3223 kfree(buf); 3224 return; 3225 } 3226 3227 #define HPSA_MAP_DEBUG 3228 #ifdef HPSA_MAP_DEBUG 3229 static void hpsa_debug_map_buff(struct ctlr_info *h, int rc, 3230 struct raid_map_data *map_buff) 3231 { 3232 struct raid_map_disk_data *dd = &map_buff->data[0]; 3233 int map, row, col; 3234 u16 map_cnt, row_cnt, disks_per_row; 3235 3236 if (rc != 0) 3237 return; 3238 3239 /* Show details only if debugging has been activated. */ 3240 if (h->raid_offload_debug < 2) 3241 return; 3242 3243 dev_info(&h->pdev->dev, "structure_size = %u\n", 3244 le32_to_cpu(map_buff->structure_size)); 3245 dev_info(&h->pdev->dev, "volume_blk_size = %u\n", 3246 le32_to_cpu(map_buff->volume_blk_size)); 3247 dev_info(&h->pdev->dev, "volume_blk_cnt = 0x%llx\n", 3248 le64_to_cpu(map_buff->volume_blk_cnt)); 3249 dev_info(&h->pdev->dev, "physicalBlockShift = %u\n", 3250 map_buff->phys_blk_shift); 3251 dev_info(&h->pdev->dev, "parity_rotation_shift = %u\n", 3252 map_buff->parity_rotation_shift); 3253 dev_info(&h->pdev->dev, "strip_size = %u\n", 3254 le16_to_cpu(map_buff->strip_size)); 3255 dev_info(&h->pdev->dev, "disk_starting_blk = 0x%llx\n", 3256 le64_to_cpu(map_buff->disk_starting_blk)); 3257 dev_info(&h->pdev->dev, "disk_blk_cnt = 0x%llx\n", 3258 le64_to_cpu(map_buff->disk_blk_cnt)); 3259 dev_info(&h->pdev->dev, "data_disks_per_row = %u\n", 3260 le16_to_cpu(map_buff->data_disks_per_row)); 3261 dev_info(&h->pdev->dev, "metadata_disks_per_row = %u\n", 3262 le16_to_cpu(map_buff->metadata_disks_per_row)); 3263 dev_info(&h->pdev->dev, "row_cnt = %u\n", 3264 le16_to_cpu(map_buff->row_cnt)); 3265 dev_info(&h->pdev->dev, "layout_map_count = %u\n", 3266 le16_to_cpu(map_buff->layout_map_count)); 3267 dev_info(&h->pdev->dev, "flags = 0x%x\n", 3268 le16_to_cpu(map_buff->flags)); 3269 dev_info(&h->pdev->dev, "encryption = %s\n", 3270 le16_to_cpu(map_buff->flags) & 3271 RAID_MAP_FLAG_ENCRYPT_ON ? "ON" : "OFF"); 3272 dev_info(&h->pdev->dev, "dekindex = %u\n", 3273 le16_to_cpu(map_buff->dekindex)); 3274 map_cnt = le16_to_cpu(map_buff->layout_map_count); 3275 for (map = 0; map < map_cnt; map++) { 3276 dev_info(&h->pdev->dev, "Map%u:\n", map); 3277 row_cnt = le16_to_cpu(map_buff->row_cnt); 3278 for (row = 0; row < row_cnt; row++) { 3279 dev_info(&h->pdev->dev, " Row%u:\n", row); 3280 disks_per_row = 3281 le16_to_cpu(map_buff->data_disks_per_row); 3282 for (col = 0; col < disks_per_row; col++, dd++) 3283 dev_info(&h->pdev->dev, 3284 " D%02u: h=0x%04x xor=%u,%u\n", 3285 col, dd->ioaccel_handle, 3286 dd->xor_mult[0], dd->xor_mult[1]); 3287 disks_per_row = 3288 le16_to_cpu(map_buff->metadata_disks_per_row); 3289 for (col = 0; col < disks_per_row; col++, dd++) 3290 dev_info(&h->pdev->dev, 3291 " M%02u: h=0x%04x xor=%u,%u\n", 3292 col, dd->ioaccel_handle, 3293 dd->xor_mult[0], dd->xor_mult[1]); 3294 } 3295 } 3296 } 3297 #else 3298 static void hpsa_debug_map_buff(__attribute__((unused)) struct ctlr_info *h, 3299 __attribute__((unused)) int rc, 3300 __attribute__((unused)) struct raid_map_data *map_buff) 3301 { 3302 } 3303 #endif 3304 3305 static int hpsa_get_raid_map(struct ctlr_info *h, 3306 unsigned char *scsi3addr, struct hpsa_scsi_dev_t *this_device) 3307 { 3308 int rc = 0; 3309 struct CommandList *c; 3310 struct ErrorInfo *ei; 3311 3312 c = cmd_alloc(h); 3313 3314 if (fill_cmd(c, HPSA_GET_RAID_MAP, h, &this_device->raid_map, 3315 sizeof(this_device->raid_map), 0, 3316 scsi3addr, TYPE_CMD)) { 3317 dev_warn(&h->pdev->dev, "hpsa_get_raid_map fill_cmd failed\n"); 3318 cmd_free(h, c); 3319 return -1; 3320 } 3321 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE, 3322 NO_TIMEOUT); 3323 if (rc) 3324 goto out; 3325 ei = c->err_info; 3326 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { 3327 hpsa_scsi_interpret_error(h, c); 3328 rc = -1; 3329 goto out; 3330 } 3331 cmd_free(h, c); 3332 3333 /* @todo in the future, dynamically allocate RAID map memory */ 3334 if (le32_to_cpu(this_device->raid_map.structure_size) > 3335 sizeof(this_device->raid_map)) { 3336 dev_warn(&h->pdev->dev, "RAID map size is too large!\n"); 3337 rc = -1; 3338 } 3339 hpsa_debug_map_buff(h, rc, &this_device->raid_map); 3340 return rc; 3341 out: 3342 cmd_free(h, c); 3343 return rc; 3344 } 3345 3346 static int hpsa_bmic_sense_subsystem_information(struct ctlr_info *h, 3347 unsigned char scsi3addr[], u16 bmic_device_index, 3348 struct bmic_sense_subsystem_info *buf, size_t bufsize) 3349 { 3350 int rc = IO_OK; 3351 struct CommandList *c; 3352 struct ErrorInfo *ei; 3353 3354 c = cmd_alloc(h); 3355 3356 rc = fill_cmd(c, BMIC_SENSE_SUBSYSTEM_INFORMATION, h, buf, bufsize, 3357 0, RAID_CTLR_LUNID, TYPE_CMD); 3358 if (rc) 3359 goto out; 3360 3361 c->Request.CDB[2] = bmic_device_index & 0xff; 3362 c->Request.CDB[9] = (bmic_device_index >> 8) & 0xff; 3363 3364 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE, 3365 NO_TIMEOUT); 3366 if (rc) 3367 goto out; 3368 ei = c->err_info; 3369 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { 3370 hpsa_scsi_interpret_error(h, c); 3371 rc = -1; 3372 } 3373 out: 3374 cmd_free(h, c); 3375 return rc; 3376 } 3377 3378 static int hpsa_bmic_id_controller(struct ctlr_info *h, 3379 struct bmic_identify_controller *buf, size_t bufsize) 3380 { 3381 int rc = IO_OK; 3382 struct CommandList *c; 3383 struct ErrorInfo *ei; 3384 3385 c = cmd_alloc(h); 3386 3387 rc = fill_cmd(c, BMIC_IDENTIFY_CONTROLLER, h, buf, bufsize, 3388 0, RAID_CTLR_LUNID, TYPE_CMD); 3389 if (rc) 3390 goto out; 3391 3392 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE, 3393 NO_TIMEOUT); 3394 if (rc) 3395 goto out; 3396 ei = c->err_info; 3397 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { 3398 hpsa_scsi_interpret_error(h, c); 3399 rc = -1; 3400 } 3401 out: 3402 cmd_free(h, c); 3403 return rc; 3404 } 3405 3406 static int hpsa_bmic_id_physical_device(struct ctlr_info *h, 3407 unsigned char scsi3addr[], u16 bmic_device_index, 3408 struct bmic_identify_physical_device *buf, size_t bufsize) 3409 { 3410 int rc = IO_OK; 3411 struct CommandList *c; 3412 struct ErrorInfo *ei; 3413 3414 c = cmd_alloc(h); 3415 rc = fill_cmd(c, BMIC_IDENTIFY_PHYSICAL_DEVICE, h, buf, bufsize, 3416 0, RAID_CTLR_LUNID, TYPE_CMD); 3417 if (rc) 3418 goto out; 3419 3420 c->Request.CDB[2] = bmic_device_index & 0xff; 3421 c->Request.CDB[9] = (bmic_device_index >> 8) & 0xff; 3422 3423 hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE, 3424 NO_TIMEOUT); 3425 ei = c->err_info; 3426 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { 3427 hpsa_scsi_interpret_error(h, c); 3428 rc = -1; 3429 } 3430 out: 3431 cmd_free(h, c); 3432 3433 return rc; 3434 } 3435 3436 /* 3437 * get enclosure information 3438 * struct ReportExtendedLUNdata *rlep - Used for BMIC drive number 3439 * struct hpsa_scsi_dev_t *encl_dev - device entry for enclosure 3440 * Uses id_physical_device to determine the box_index. 3441 */ 3442 static void hpsa_get_enclosure_info(struct ctlr_info *h, 3443 unsigned char *scsi3addr, 3444 struct ReportExtendedLUNdata *rlep, int rle_index, 3445 struct hpsa_scsi_dev_t *encl_dev) 3446 { 3447 int rc = -1; 3448 struct CommandList *c = NULL; 3449 struct ErrorInfo *ei = NULL; 3450 struct bmic_sense_storage_box_params *bssbp = NULL; 3451 struct bmic_identify_physical_device *id_phys = NULL; 3452 struct ext_report_lun_entry *rle; 3453 u16 bmic_device_index = 0; 3454 3455 if (rle_index < 0 || rle_index >= HPSA_MAX_PHYS_LUN) 3456 return; 3457 3458 rle = &rlep->LUN[rle_index]; 3459 3460 encl_dev->eli = 3461 hpsa_get_enclosure_logical_identifier(h, scsi3addr); 3462 3463 bmic_device_index = GET_BMIC_DRIVE_NUMBER(&rle->lunid[0]); 3464 3465 if (encl_dev->target == -1 || encl_dev->lun == -1) { 3466 rc = IO_OK; 3467 goto out; 3468 } 3469 3470 if (bmic_device_index == 0xFF00 || MASKED_DEVICE(&rle->lunid[0])) { 3471 rc = IO_OK; 3472 goto out; 3473 } 3474 3475 bssbp = kzalloc(sizeof(*bssbp), GFP_KERNEL); 3476 if (!bssbp) 3477 goto out; 3478 3479 id_phys = kzalloc(sizeof(*id_phys), GFP_KERNEL); 3480 if (!id_phys) 3481 goto out; 3482 3483 rc = hpsa_bmic_id_physical_device(h, scsi3addr, bmic_device_index, 3484 id_phys, sizeof(*id_phys)); 3485 if (rc) { 3486 dev_warn(&h->pdev->dev, "%s: id_phys failed %d bdi[0x%x]\n", 3487 __func__, encl_dev->external, bmic_device_index); 3488 goto out; 3489 } 3490 3491 c = cmd_alloc(h); 3492 3493 rc = fill_cmd(c, BMIC_SENSE_STORAGE_BOX_PARAMS, h, bssbp, 3494 sizeof(*bssbp), 0, RAID_CTLR_LUNID, TYPE_CMD); 3495 3496 if (rc) 3497 goto out; 3498 3499 if (id_phys->phys_connector[1] == 'E') 3500 c->Request.CDB[5] = id_phys->box_index; 3501 else 3502 c->Request.CDB[5] = 0; 3503 3504 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE, 3505 NO_TIMEOUT); 3506 if (rc) 3507 goto out; 3508 3509 ei = c->err_info; 3510 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { 3511 rc = -1; 3512 goto out; 3513 } 3514 3515 encl_dev->box[id_phys->active_path_number] = bssbp->phys_box_on_port; 3516 memcpy(&encl_dev->phys_connector[id_phys->active_path_number], 3517 bssbp->phys_connector, sizeof(bssbp->phys_connector)); 3518 3519 rc = IO_OK; 3520 out: 3521 kfree(bssbp); 3522 kfree(id_phys); 3523 3524 if (c) 3525 cmd_free(h, c); 3526 3527 if (rc != IO_OK) 3528 hpsa_show_dev_msg(KERN_INFO, h, encl_dev, 3529 "Error, could not get enclosure information"); 3530 } 3531 3532 static u64 hpsa_get_sas_address_from_report_physical(struct ctlr_info *h, 3533 unsigned char *scsi3addr) 3534 { 3535 struct ReportExtendedLUNdata *physdev; 3536 u32 nphysicals; 3537 u64 sa = 0; 3538 int i; 3539 3540 physdev = kzalloc(sizeof(*physdev), GFP_KERNEL); 3541 if (!physdev) 3542 return 0; 3543 3544 if (hpsa_scsi_do_report_phys_luns(h, physdev, sizeof(*physdev))) { 3545 dev_err(&h->pdev->dev, "report physical LUNs failed.\n"); 3546 kfree(physdev); 3547 return 0; 3548 } 3549 nphysicals = get_unaligned_be32(physdev->LUNListLength) / 24; 3550 3551 for (i = 0; i < nphysicals; i++) 3552 if (!memcmp(&physdev->LUN[i].lunid[0], scsi3addr, 8)) { 3553 sa = get_unaligned_be64(&physdev->LUN[i].wwid[0]); 3554 break; 3555 } 3556 3557 kfree(physdev); 3558 3559 return sa; 3560 } 3561 3562 static void hpsa_get_sas_address(struct ctlr_info *h, unsigned char *scsi3addr, 3563 struct hpsa_scsi_dev_t *dev) 3564 { 3565 int rc; 3566 u64 sa = 0; 3567 3568 if (is_hba_lunid(scsi3addr)) { 3569 struct bmic_sense_subsystem_info *ssi; 3570 3571 ssi = kzalloc(sizeof(*ssi), GFP_KERNEL); 3572 if (!ssi) 3573 return; 3574 3575 rc = hpsa_bmic_sense_subsystem_information(h, 3576 scsi3addr, 0, ssi, sizeof(*ssi)); 3577 if (rc == 0) { 3578 sa = get_unaligned_be64(ssi->primary_world_wide_id); 3579 h->sas_address = sa; 3580 } 3581 3582 kfree(ssi); 3583 } else 3584 sa = hpsa_get_sas_address_from_report_physical(h, scsi3addr); 3585 3586 dev->sas_address = sa; 3587 } 3588 3589 static void hpsa_ext_ctrl_present(struct ctlr_info *h, 3590 struct ReportExtendedLUNdata *physdev) 3591 { 3592 u32 nphysicals; 3593 int i; 3594 3595 if (h->discovery_polling) 3596 return; 3597 3598 nphysicals = (get_unaligned_be32(physdev->LUNListLength) / 24) + 1; 3599 3600 for (i = 0; i < nphysicals; i++) { 3601 if (physdev->LUN[i].device_type == 3602 BMIC_DEVICE_TYPE_CONTROLLER 3603 && !is_hba_lunid(physdev->LUN[i].lunid)) { 3604 dev_info(&h->pdev->dev, 3605 "External controller present, activate discovery polling and disable rld caching\n"); 3606 hpsa_disable_rld_caching(h); 3607 h->discovery_polling = 1; 3608 break; 3609 } 3610 } 3611 } 3612 3613 /* Get a device id from inquiry page 0x83 */ 3614 static bool hpsa_vpd_page_supported(struct ctlr_info *h, 3615 unsigned char scsi3addr[], u8 page) 3616 { 3617 int rc; 3618 int i; 3619 int pages; 3620 unsigned char *buf, bufsize; 3621 3622 buf = kzalloc(256, GFP_KERNEL); 3623 if (!buf) 3624 return false; 3625 3626 /* Get the size of the page list first */ 3627 rc = hpsa_scsi_do_inquiry(h, scsi3addr, 3628 VPD_PAGE | HPSA_VPD_SUPPORTED_PAGES, 3629 buf, HPSA_VPD_HEADER_SZ); 3630 if (rc != 0) 3631 goto exit_unsupported; 3632 pages = buf[3]; 3633 if ((pages + HPSA_VPD_HEADER_SZ) <= 255) 3634 bufsize = pages + HPSA_VPD_HEADER_SZ; 3635 else 3636 bufsize = 255; 3637 3638 /* Get the whole VPD page list */ 3639 rc = hpsa_scsi_do_inquiry(h, scsi3addr, 3640 VPD_PAGE | HPSA_VPD_SUPPORTED_PAGES, 3641 buf, bufsize); 3642 if (rc != 0) 3643 goto exit_unsupported; 3644 3645 pages = buf[3]; 3646 for (i = 1; i <= pages; i++) 3647 if (buf[3 + i] == page) 3648 goto exit_supported; 3649 exit_unsupported: 3650 kfree(buf); 3651 return false; 3652 exit_supported: 3653 kfree(buf); 3654 return true; 3655 } 3656 3657 /* 3658 * Called during a scan operation. 3659 * Sets ioaccel status on the new device list, not the existing device list 3660 * 3661 * The device list used during I/O will be updated later in 3662 * adjust_hpsa_scsi_table. 3663 */ 3664 static void hpsa_get_ioaccel_status(struct ctlr_info *h, 3665 unsigned char *scsi3addr, struct hpsa_scsi_dev_t *this_device) 3666 { 3667 int rc; 3668 unsigned char *buf; 3669 u8 ioaccel_status; 3670 3671 this_device->offload_config = 0; 3672 this_device->offload_enabled = 0; 3673 this_device->offload_to_be_enabled = 0; 3674 3675 buf = kzalloc(64, GFP_KERNEL); 3676 if (!buf) 3677 return; 3678 if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_IOACCEL_STATUS)) 3679 goto out; 3680 rc = hpsa_scsi_do_inquiry(h, scsi3addr, 3681 VPD_PAGE | HPSA_VPD_LV_IOACCEL_STATUS, buf, 64); 3682 if (rc != 0) 3683 goto out; 3684 3685 #define IOACCEL_STATUS_BYTE 4 3686 #define OFFLOAD_CONFIGURED_BIT 0x01 3687 #define OFFLOAD_ENABLED_BIT 0x02 3688 ioaccel_status = buf[IOACCEL_STATUS_BYTE]; 3689 this_device->offload_config = 3690 !!(ioaccel_status & OFFLOAD_CONFIGURED_BIT); 3691 if (this_device->offload_config) { 3692 bool offload_enabled = 3693 !!(ioaccel_status & OFFLOAD_ENABLED_BIT); 3694 /* 3695 * Check to see if offload can be enabled. 3696 */ 3697 if (offload_enabled) { 3698 rc = hpsa_get_raid_map(h, scsi3addr, this_device); 3699 if (rc) /* could not load raid_map */ 3700 goto out; 3701 this_device->offload_to_be_enabled = 1; 3702 } 3703 } 3704 3705 out: 3706 kfree(buf); 3707 return; 3708 } 3709 3710 /* Get the device id from inquiry page 0x83 */ 3711 static int hpsa_get_device_id(struct ctlr_info *h, unsigned char *scsi3addr, 3712 unsigned char *device_id, int index, int buflen) 3713 { 3714 int rc; 3715 unsigned char *buf; 3716 3717 /* Does controller have VPD for device id? */ 3718 if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_DEVICE_ID)) 3719 return 1; /* not supported */ 3720 3721 buf = kzalloc(64, GFP_KERNEL); 3722 if (!buf) 3723 return -ENOMEM; 3724 3725 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | 3726 HPSA_VPD_LV_DEVICE_ID, buf, 64); 3727 if (rc == 0) { 3728 if (buflen > 16) 3729 buflen = 16; 3730 memcpy(device_id, &buf[8], buflen); 3731 } 3732 3733 kfree(buf); 3734 3735 return rc; /*0 - got id, otherwise, didn't */ 3736 } 3737 3738 static int hpsa_scsi_do_report_luns(struct ctlr_info *h, int logical, 3739 void *buf, int bufsize, 3740 int extended_response) 3741 { 3742 int rc = IO_OK; 3743 struct CommandList *c; 3744 unsigned char scsi3addr[8]; 3745 struct ErrorInfo *ei; 3746 3747 c = cmd_alloc(h); 3748 3749 /* address the controller */ 3750 memset(scsi3addr, 0, sizeof(scsi3addr)); 3751 if (fill_cmd(c, logical ? HPSA_REPORT_LOG : HPSA_REPORT_PHYS, h, 3752 buf, bufsize, 0, scsi3addr, TYPE_CMD)) { 3753 rc = -EAGAIN; 3754 goto out; 3755 } 3756 if (extended_response) 3757 c->Request.CDB[1] = extended_response; 3758 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE, 3759 NO_TIMEOUT); 3760 if (rc) 3761 goto out; 3762 ei = c->err_info; 3763 if (ei->CommandStatus != 0 && 3764 ei->CommandStatus != CMD_DATA_UNDERRUN) { 3765 hpsa_scsi_interpret_error(h, c); 3766 rc = -EIO; 3767 } else { 3768 struct ReportLUNdata *rld = buf; 3769 3770 if (rld->extended_response_flag != extended_response) { 3771 if (!h->legacy_board) { 3772 dev_err(&h->pdev->dev, 3773 "report luns requested format %u, got %u\n", 3774 extended_response, 3775 rld->extended_response_flag); 3776 rc = -EINVAL; 3777 } else 3778 rc = -EOPNOTSUPP; 3779 } 3780 } 3781 out: 3782 cmd_free(h, c); 3783 return rc; 3784 } 3785 3786 static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h, 3787 struct ReportExtendedLUNdata *buf, int bufsize) 3788 { 3789 int rc; 3790 struct ReportLUNdata *lbuf; 3791 3792 rc = hpsa_scsi_do_report_luns(h, 0, buf, bufsize, 3793 HPSA_REPORT_PHYS_EXTENDED); 3794 if (!rc || rc != -EOPNOTSUPP) 3795 return rc; 3796 3797 /* REPORT PHYS EXTENDED is not supported */ 3798 lbuf = kzalloc(sizeof(*lbuf), GFP_KERNEL); 3799 if (!lbuf) 3800 return -ENOMEM; 3801 3802 rc = hpsa_scsi_do_report_luns(h, 0, lbuf, sizeof(*lbuf), 0); 3803 if (!rc) { 3804 int i; 3805 u32 nphys; 3806 3807 /* Copy ReportLUNdata header */ 3808 memcpy(buf, lbuf, 8); 3809 nphys = be32_to_cpu(*((__be32 *)lbuf->LUNListLength)) / 8; 3810 for (i = 0; i < nphys; i++) 3811 memcpy(buf->LUN[i].lunid, lbuf->LUN[i], 8); 3812 } 3813 kfree(lbuf); 3814 return rc; 3815 } 3816 3817 static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info *h, 3818 struct ReportLUNdata *buf, int bufsize) 3819 { 3820 return hpsa_scsi_do_report_luns(h, 1, buf, bufsize, 0); 3821 } 3822 3823 static inline void hpsa_set_bus_target_lun(struct hpsa_scsi_dev_t *device, 3824 int bus, int target, int lun) 3825 { 3826 device->bus = bus; 3827 device->target = target; 3828 device->lun = lun; 3829 } 3830 3831 /* Use VPD inquiry to get details of volume status */ 3832 static int hpsa_get_volume_status(struct ctlr_info *h, 3833 unsigned char scsi3addr[]) 3834 { 3835 int rc; 3836 int status; 3837 int size; 3838 unsigned char *buf; 3839 3840 buf = kzalloc(64, GFP_KERNEL); 3841 if (!buf) 3842 return HPSA_VPD_LV_STATUS_UNSUPPORTED; 3843 3844 /* Does controller have VPD for logical volume status? */ 3845 if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_STATUS)) 3846 goto exit_failed; 3847 3848 /* Get the size of the VPD return buffer */ 3849 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | HPSA_VPD_LV_STATUS, 3850 buf, HPSA_VPD_HEADER_SZ); 3851 if (rc != 0) 3852 goto exit_failed; 3853 size = buf[3]; 3854 3855 /* Now get the whole VPD buffer */ 3856 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | HPSA_VPD_LV_STATUS, 3857 buf, size + HPSA_VPD_HEADER_SZ); 3858 if (rc != 0) 3859 goto exit_failed; 3860 status = buf[4]; /* status byte */ 3861 3862 kfree(buf); 3863 return status; 3864 exit_failed: 3865 kfree(buf); 3866 return HPSA_VPD_LV_STATUS_UNSUPPORTED; 3867 } 3868 3869 /* Determine offline status of a volume. 3870 * Return either: 3871 * 0 (not offline) 3872 * 0xff (offline for unknown reasons) 3873 * # (integer code indicating one of several NOT READY states 3874 * describing why a volume is to be kept offline) 3875 */ 3876 static unsigned char hpsa_volume_offline(struct ctlr_info *h, 3877 unsigned char scsi3addr[]) 3878 { 3879 struct CommandList *c; 3880 unsigned char *sense; 3881 u8 sense_key, asc, ascq; 3882 int sense_len; 3883 int rc, ldstat = 0; 3884 #define ASC_LUN_NOT_READY 0x04 3885 #define ASCQ_LUN_NOT_READY_FORMAT_IN_PROGRESS 0x04 3886 #define ASCQ_LUN_NOT_READY_INITIALIZING_CMD_REQ 0x02 3887 3888 c = cmd_alloc(h); 3889 3890 (void) fill_cmd(c, TEST_UNIT_READY, h, NULL, 0, 0, scsi3addr, TYPE_CMD); 3891 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, 3892 NO_TIMEOUT); 3893 if (rc) { 3894 cmd_free(h, c); 3895 return HPSA_VPD_LV_STATUS_UNSUPPORTED; 3896 } 3897 sense = c->err_info->SenseInfo; 3898 if (c->err_info->SenseLen > sizeof(c->err_info->SenseInfo)) 3899 sense_len = sizeof(c->err_info->SenseInfo); 3900 else 3901 sense_len = c->err_info->SenseLen; 3902 decode_sense_data(sense, sense_len, &sense_key, &asc, &ascq); 3903 cmd_free(h, c); 3904 3905 /* Determine the reason for not ready state */ 3906 ldstat = hpsa_get_volume_status(h, scsi3addr); 3907 3908 /* Keep volume offline in certain cases: */ 3909 switch (ldstat) { 3910 case HPSA_LV_FAILED: 3911 case HPSA_LV_UNDERGOING_ERASE: 3912 case HPSA_LV_NOT_AVAILABLE: 3913 case HPSA_LV_UNDERGOING_RPI: 3914 case HPSA_LV_PENDING_RPI: 3915 case HPSA_LV_ENCRYPTED_NO_KEY: 3916 case HPSA_LV_PLAINTEXT_IN_ENCRYPT_ONLY_CONTROLLER: 3917 case HPSA_LV_UNDERGOING_ENCRYPTION: 3918 case HPSA_LV_UNDERGOING_ENCRYPTION_REKEYING: 3919 case HPSA_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER: 3920 return ldstat; 3921 case HPSA_VPD_LV_STATUS_UNSUPPORTED: 3922 /* If VPD status page isn't available, 3923 * use ASC/ASCQ to determine state 3924 */ 3925 if ((ascq == ASCQ_LUN_NOT_READY_FORMAT_IN_PROGRESS) || 3926 (ascq == ASCQ_LUN_NOT_READY_INITIALIZING_CMD_REQ)) 3927 return ldstat; 3928 break; 3929 default: 3930 break; 3931 } 3932 return HPSA_LV_OK; 3933 } 3934 3935 static int hpsa_update_device_info(struct ctlr_info *h, 3936 unsigned char scsi3addr[], struct hpsa_scsi_dev_t *this_device, 3937 unsigned char *is_OBDR_device) 3938 { 3939 3940 #define OBDR_SIG_OFFSET 43 3941 #define OBDR_TAPE_SIG "$DR-10" 3942 #define OBDR_SIG_LEN (sizeof(OBDR_TAPE_SIG) - 1) 3943 #define OBDR_TAPE_INQ_SIZE (OBDR_SIG_OFFSET + OBDR_SIG_LEN) 3944 3945 unsigned char *inq_buff; 3946 unsigned char *obdr_sig; 3947 int rc = 0; 3948 3949 inq_buff = kzalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL); 3950 if (!inq_buff) { 3951 rc = -ENOMEM; 3952 goto bail_out; 3953 } 3954 3955 /* Do an inquiry to the device to see what it is. */ 3956 if (hpsa_scsi_do_inquiry(h, scsi3addr, 0, inq_buff, 3957 (unsigned char) OBDR_TAPE_INQ_SIZE) != 0) { 3958 dev_err(&h->pdev->dev, 3959 "%s: inquiry failed, device will be skipped.\n", 3960 __func__); 3961 rc = HPSA_INQUIRY_FAILED; 3962 goto bail_out; 3963 } 3964 3965 scsi_sanitize_inquiry_string(&inq_buff[8], 8); 3966 scsi_sanitize_inquiry_string(&inq_buff[16], 16); 3967 3968 this_device->devtype = (inq_buff[0] & 0x1f); 3969 memcpy(this_device->scsi3addr, scsi3addr, 8); 3970 memcpy(this_device->vendor, &inq_buff[8], 3971 sizeof(this_device->vendor)); 3972 memcpy(this_device->model, &inq_buff[16], 3973 sizeof(this_device->model)); 3974 this_device->rev = inq_buff[2]; 3975 memset(this_device->device_id, 0, 3976 sizeof(this_device->device_id)); 3977 if (hpsa_get_device_id(h, scsi3addr, this_device->device_id, 8, 3978 sizeof(this_device->device_id)) < 0) { 3979 dev_err(&h->pdev->dev, 3980 "hpsa%d: %s: can't get device id for [%d:%d:%d:%d]\t%s\t%.16s\n", 3981 h->ctlr, __func__, 3982 h->scsi_host->host_no, 3983 this_device->bus, this_device->target, 3984 this_device->lun, 3985 scsi_device_type(this_device->devtype), 3986 this_device->model); 3987 rc = HPSA_LV_FAILED; 3988 goto bail_out; 3989 } 3990 3991 if ((this_device->devtype == TYPE_DISK || 3992 this_device->devtype == TYPE_ZBC) && 3993 is_logical_dev_addr_mode(scsi3addr)) { 3994 unsigned char volume_offline; 3995 3996 hpsa_get_raid_level(h, scsi3addr, &this_device->raid_level); 3997 if (h->fw_support & MISC_FW_RAID_OFFLOAD_BASIC) 3998 hpsa_get_ioaccel_status(h, scsi3addr, this_device); 3999 volume_offline = hpsa_volume_offline(h, scsi3addr); 4000 if (volume_offline == HPSA_VPD_LV_STATUS_UNSUPPORTED && 4001 h->legacy_board) { 4002 /* 4003 * Legacy boards might not support volume status 4004 */ 4005 dev_info(&h->pdev->dev, 4006 "C0:T%d:L%d Volume status not available, assuming online.\n", 4007 this_device->target, this_device->lun); 4008 volume_offline = 0; 4009 } 4010 this_device->volume_offline = volume_offline; 4011 if (volume_offline == HPSA_LV_FAILED) { 4012 rc = HPSA_LV_FAILED; 4013 dev_err(&h->pdev->dev, 4014 "%s: LV failed, device will be skipped.\n", 4015 __func__); 4016 goto bail_out; 4017 } 4018 } else { 4019 this_device->raid_level = RAID_UNKNOWN; 4020 this_device->offload_config = 0; 4021 hpsa_turn_off_ioaccel_for_device(this_device); 4022 this_device->hba_ioaccel_enabled = 0; 4023 this_device->volume_offline = 0; 4024 this_device->queue_depth = h->nr_cmds; 4025 } 4026 4027 if (this_device->external) 4028 this_device->queue_depth = EXTERNAL_QD; 4029 4030 if (is_OBDR_device) { 4031 /* See if this is a One-Button-Disaster-Recovery device 4032 * by looking for "$DR-10" at offset 43 in inquiry data. 4033 */ 4034 obdr_sig = &inq_buff[OBDR_SIG_OFFSET]; 4035 *is_OBDR_device = (this_device->devtype == TYPE_ROM && 4036 strncmp(obdr_sig, OBDR_TAPE_SIG, 4037 OBDR_SIG_LEN) == 0); 4038 } 4039 kfree(inq_buff); 4040 return 0; 4041 4042 bail_out: 4043 kfree(inq_buff); 4044 return rc; 4045 } 4046 4047 /* 4048 * Helper function to assign bus, target, lun mapping of devices. 4049 * Logical drive target and lun are assigned at this time, but 4050 * physical device lun and target assignment are deferred (assigned 4051 * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.) 4052 */ 4053 static void figure_bus_target_lun(struct ctlr_info *h, 4054 u8 *lunaddrbytes, struct hpsa_scsi_dev_t *device) 4055 { 4056 u32 lunid = get_unaligned_le32(lunaddrbytes); 4057 4058 if (!is_logical_dev_addr_mode(lunaddrbytes)) { 4059 /* physical device, target and lun filled in later */ 4060 if (is_hba_lunid(lunaddrbytes)) { 4061 int bus = HPSA_HBA_BUS; 4062 4063 if (!device->rev) 4064 bus = HPSA_LEGACY_HBA_BUS; 4065 hpsa_set_bus_target_lun(device, 4066 bus, 0, lunid & 0x3fff); 4067 } else 4068 /* defer target, lun assignment for physical devices */ 4069 hpsa_set_bus_target_lun(device, 4070 HPSA_PHYSICAL_DEVICE_BUS, -1, -1); 4071 return; 4072 } 4073 /* It's a logical device */ 4074 if (device->external) { 4075 hpsa_set_bus_target_lun(device, 4076 HPSA_EXTERNAL_RAID_VOLUME_BUS, (lunid >> 16) & 0x3fff, 4077 lunid & 0x00ff); 4078 return; 4079 } 4080 hpsa_set_bus_target_lun(device, HPSA_RAID_VOLUME_BUS, 4081 0, lunid & 0x3fff); 4082 } 4083 4084 static int figure_external_status(struct ctlr_info *h, int raid_ctlr_position, 4085 int i, int nphysicals, int nlocal_logicals) 4086 { 4087 /* In report logicals, local logicals are listed first, 4088 * then any externals. 4089 */ 4090 int logicals_start = nphysicals + (raid_ctlr_position == 0); 4091 4092 if (i == raid_ctlr_position) 4093 return 0; 4094 4095 if (i < logicals_start) 4096 return 0; 4097 4098 /* i is in logicals range, but still within local logicals */ 4099 if ((i - nphysicals - (raid_ctlr_position == 0)) < nlocal_logicals) 4100 return 0; 4101 4102 return 1; /* it's an external lun */ 4103 } 4104 4105 /* 4106 * Do CISS_REPORT_PHYS and CISS_REPORT_LOG. Data is returned in physdev, 4107 * logdev. The number of luns in physdev and logdev are returned in 4108 * *nphysicals and *nlogicals, respectively. 4109 * Returns 0 on success, -1 otherwise. 4110 */ 4111 static int hpsa_gather_lun_info(struct ctlr_info *h, 4112 struct ReportExtendedLUNdata *physdev, u32 *nphysicals, 4113 struct ReportLUNdata *logdev, u32 *nlogicals) 4114 { 4115 if (hpsa_scsi_do_report_phys_luns(h, physdev, sizeof(*physdev))) { 4116 dev_err(&h->pdev->dev, "report physical LUNs failed.\n"); 4117 return -1; 4118 } 4119 *nphysicals = be32_to_cpu(*((__be32 *)physdev->LUNListLength)) / 24; 4120 if (*nphysicals > HPSA_MAX_PHYS_LUN) { 4121 dev_warn(&h->pdev->dev, "maximum physical LUNs (%d) exceeded. %d LUNs ignored.\n", 4122 HPSA_MAX_PHYS_LUN, *nphysicals - HPSA_MAX_PHYS_LUN); 4123 *nphysicals = HPSA_MAX_PHYS_LUN; 4124 } 4125 if (hpsa_scsi_do_report_log_luns(h, logdev, sizeof(*logdev))) { 4126 dev_err(&h->pdev->dev, "report logical LUNs failed.\n"); 4127 return -1; 4128 } 4129 *nlogicals = be32_to_cpu(*((__be32 *) logdev->LUNListLength)) / 8; 4130 /* Reject Logicals in excess of our max capability. */ 4131 if (*nlogicals > HPSA_MAX_LUN) { 4132 dev_warn(&h->pdev->dev, 4133 "maximum logical LUNs (%d) exceeded. " 4134 "%d LUNs ignored.\n", HPSA_MAX_LUN, 4135 *nlogicals - HPSA_MAX_LUN); 4136 *nlogicals = HPSA_MAX_LUN; 4137 } 4138 if (*nlogicals + *nphysicals > HPSA_MAX_PHYS_LUN) { 4139 dev_warn(&h->pdev->dev, 4140 "maximum logical + physical LUNs (%d) exceeded. " 4141 "%d LUNs ignored.\n", HPSA_MAX_PHYS_LUN, 4142 *nphysicals + *nlogicals - HPSA_MAX_PHYS_LUN); 4143 *nlogicals = HPSA_MAX_PHYS_LUN - *nphysicals; 4144 } 4145 return 0; 4146 } 4147 4148 static u8 *figure_lunaddrbytes(struct ctlr_info *h, int raid_ctlr_position, 4149 int i, int nphysicals, int nlogicals, 4150 struct ReportExtendedLUNdata *physdev_list, 4151 struct ReportLUNdata *logdev_list) 4152 { 4153 /* Helper function, figure out where the LUN ID info is coming from 4154 * given index i, lists of physical and logical devices, where in 4155 * the list the raid controller is supposed to appear (first or last) 4156 */ 4157 4158 int logicals_start = nphysicals + (raid_ctlr_position == 0); 4159 int last_device = nphysicals + nlogicals + (raid_ctlr_position == 0); 4160 4161 if (i == raid_ctlr_position) 4162 return RAID_CTLR_LUNID; 4163 4164 if (i < logicals_start) 4165 return &physdev_list->LUN[i - 4166 (raid_ctlr_position == 0)].lunid[0]; 4167 4168 if (i < last_device) 4169 return &logdev_list->LUN[i - nphysicals - 4170 (raid_ctlr_position == 0)][0]; 4171 BUG(); 4172 return NULL; 4173 } 4174 4175 /* get physical drive ioaccel handle and queue depth */ 4176 static void hpsa_get_ioaccel_drive_info(struct ctlr_info *h, 4177 struct hpsa_scsi_dev_t *dev, 4178 struct ReportExtendedLUNdata *rlep, int rle_index, 4179 struct bmic_identify_physical_device *id_phys) 4180 { 4181 int rc; 4182 struct ext_report_lun_entry *rle; 4183 4184 if (rle_index < 0 || rle_index >= HPSA_MAX_PHYS_LUN) 4185 return; 4186 4187 rle = &rlep->LUN[rle_index]; 4188 4189 dev->ioaccel_handle = rle->ioaccel_handle; 4190 if ((rle->device_flags & 0x08) && dev->ioaccel_handle) 4191 dev->hba_ioaccel_enabled = 1; 4192 memset(id_phys, 0, sizeof(*id_phys)); 4193 rc = hpsa_bmic_id_physical_device(h, &rle->lunid[0], 4194 GET_BMIC_DRIVE_NUMBER(&rle->lunid[0]), id_phys, 4195 sizeof(*id_phys)); 4196 if (!rc) 4197 /* Reserve space for FW operations */ 4198 #define DRIVE_CMDS_RESERVED_FOR_FW 2 4199 #define DRIVE_QUEUE_DEPTH 7 4200 dev->queue_depth = 4201 le16_to_cpu(id_phys->current_queue_depth_limit) - 4202 DRIVE_CMDS_RESERVED_FOR_FW; 4203 else 4204 dev->queue_depth = DRIVE_QUEUE_DEPTH; /* conservative */ 4205 } 4206 4207 static void hpsa_get_path_info(struct hpsa_scsi_dev_t *this_device, 4208 struct ReportExtendedLUNdata *rlep, int rle_index, 4209 struct bmic_identify_physical_device *id_phys) 4210 { 4211 struct ext_report_lun_entry *rle; 4212 4213 if (rle_index < 0 || rle_index >= HPSA_MAX_PHYS_LUN) 4214 return; 4215 4216 rle = &rlep->LUN[rle_index]; 4217 4218 if ((rle->device_flags & 0x08) && this_device->ioaccel_handle) 4219 this_device->hba_ioaccel_enabled = 1; 4220 4221 memcpy(&this_device->active_path_index, 4222 &id_phys->active_path_number, 4223 sizeof(this_device->active_path_index)); 4224 memcpy(&this_device->path_map, 4225 &id_phys->redundant_path_present_map, 4226 sizeof(this_device->path_map)); 4227 memcpy(&this_device->box, 4228 &id_phys->alternate_paths_phys_box_on_port, 4229 sizeof(this_device->box)); 4230 memcpy(&this_device->phys_connector, 4231 &id_phys->alternate_paths_phys_connector, 4232 sizeof(this_device->phys_connector)); 4233 memcpy(&this_device->bay, 4234 &id_phys->phys_bay_in_box, 4235 sizeof(this_device->bay)); 4236 } 4237 4238 /* get number of local logical disks. */ 4239 static int hpsa_set_local_logical_count(struct ctlr_info *h, 4240 struct bmic_identify_controller *id_ctlr, 4241 u32 *nlocals) 4242 { 4243 int rc; 4244 4245 if (!id_ctlr) { 4246 dev_warn(&h->pdev->dev, "%s: id_ctlr buffer is NULL.\n", 4247 __func__); 4248 return -ENOMEM; 4249 } 4250 memset(id_ctlr, 0, sizeof(*id_ctlr)); 4251 rc = hpsa_bmic_id_controller(h, id_ctlr, sizeof(*id_ctlr)); 4252 if (!rc) 4253 if (id_ctlr->configured_logical_drive_count < 255) 4254 *nlocals = id_ctlr->configured_logical_drive_count; 4255 else 4256 *nlocals = le16_to_cpu( 4257 id_ctlr->extended_logical_unit_count); 4258 else 4259 *nlocals = -1; 4260 return rc; 4261 } 4262 4263 static bool hpsa_is_disk_spare(struct ctlr_info *h, u8 *lunaddrbytes) 4264 { 4265 struct bmic_identify_physical_device *id_phys; 4266 bool is_spare = false; 4267 int rc; 4268 4269 id_phys = kzalloc(sizeof(*id_phys), GFP_KERNEL); 4270 if (!id_phys) 4271 return false; 4272 4273 rc = hpsa_bmic_id_physical_device(h, 4274 lunaddrbytes, 4275 GET_BMIC_DRIVE_NUMBER(lunaddrbytes), 4276 id_phys, sizeof(*id_phys)); 4277 if (rc == 0) 4278 is_spare = (id_phys->more_flags >> 6) & 0x01; 4279 4280 kfree(id_phys); 4281 return is_spare; 4282 } 4283 4284 #define RPL_DEV_FLAG_NON_DISK 0x1 4285 #define RPL_DEV_FLAG_UNCONFIG_DISK_REPORTING_SUPPORTED 0x2 4286 #define RPL_DEV_FLAG_UNCONFIG_DISK 0x4 4287 4288 #define BMIC_DEVICE_TYPE_ENCLOSURE 6 4289 4290 static bool hpsa_skip_device(struct ctlr_info *h, u8 *lunaddrbytes, 4291 struct ext_report_lun_entry *rle) 4292 { 4293 u8 device_flags; 4294 u8 device_type; 4295 4296 if (!MASKED_DEVICE(lunaddrbytes)) 4297 return false; 4298 4299 device_flags = rle->device_flags; 4300 device_type = rle->device_type; 4301 4302 if (device_flags & RPL_DEV_FLAG_NON_DISK) { 4303 if (device_type == BMIC_DEVICE_TYPE_ENCLOSURE) 4304 return false; 4305 return true; 4306 } 4307 4308 if (!(device_flags & RPL_DEV_FLAG_UNCONFIG_DISK_REPORTING_SUPPORTED)) 4309 return false; 4310 4311 if (device_flags & RPL_DEV_FLAG_UNCONFIG_DISK) 4312 return false; 4313 4314 /* 4315 * Spares may be spun down, we do not want to 4316 * do an Inquiry to a RAID set spare drive as 4317 * that would have them spun up, that is a 4318 * performance hit because I/O to the RAID device 4319 * stops while the spin up occurs which can take 4320 * over 50 seconds. 4321 */ 4322 if (hpsa_is_disk_spare(h, lunaddrbytes)) 4323 return true; 4324 4325 return false; 4326 } 4327 4328 static void hpsa_update_scsi_devices(struct ctlr_info *h) 4329 { 4330 /* the idea here is we could get notified 4331 * that some devices have changed, so we do a report 4332 * physical luns and report logical luns cmd, and adjust 4333 * our list of devices accordingly. 4334 * 4335 * The scsi3addr's of devices won't change so long as the 4336 * adapter is not reset. That means we can rescan and 4337 * tell which devices we already know about, vs. new 4338 * devices, vs. disappearing devices. 4339 */ 4340 struct ReportExtendedLUNdata *physdev_list = NULL; 4341 struct ReportLUNdata *logdev_list = NULL; 4342 struct bmic_identify_physical_device *id_phys = NULL; 4343 struct bmic_identify_controller *id_ctlr = NULL; 4344 u32 nphysicals = 0; 4345 u32 nlogicals = 0; 4346 u32 nlocal_logicals = 0; 4347 u32 ndev_allocated = 0; 4348 struct hpsa_scsi_dev_t **currentsd, *this_device, *tmpdevice; 4349 int ncurrent = 0; 4350 int i, ndevs_to_allocate; 4351 int raid_ctlr_position; 4352 bool physical_device; 4353 DECLARE_BITMAP(lunzerobits, MAX_EXT_TARGETS); 4354 4355 currentsd = kcalloc(HPSA_MAX_DEVICES, sizeof(*currentsd), GFP_KERNEL); 4356 physdev_list = kzalloc(sizeof(*physdev_list), GFP_KERNEL); 4357 logdev_list = kzalloc(sizeof(*logdev_list), GFP_KERNEL); 4358 tmpdevice = kzalloc(sizeof(*tmpdevice), GFP_KERNEL); 4359 id_phys = kzalloc(sizeof(*id_phys), GFP_KERNEL); 4360 id_ctlr = kzalloc(sizeof(*id_ctlr), GFP_KERNEL); 4361 4362 if (!currentsd || !physdev_list || !logdev_list || 4363 !tmpdevice || !id_phys || !id_ctlr) { 4364 dev_err(&h->pdev->dev, "out of memory\n"); 4365 goto out; 4366 } 4367 memset(lunzerobits, 0, sizeof(lunzerobits)); 4368 4369 h->drv_req_rescan = 0; /* cancel scheduled rescan - we're doing it. */ 4370 4371 if (hpsa_gather_lun_info(h, physdev_list, &nphysicals, 4372 logdev_list, &nlogicals)) { 4373 h->drv_req_rescan = 1; 4374 goto out; 4375 } 4376 4377 /* Set number of local logicals (non PTRAID) */ 4378 if (hpsa_set_local_logical_count(h, id_ctlr, &nlocal_logicals)) { 4379 dev_warn(&h->pdev->dev, 4380 "%s: Can't determine number of local logical devices.\n", 4381 __func__); 4382 } 4383 4384 /* We might see up to the maximum number of logical and physical disks 4385 * plus external target devices, and a device for the local RAID 4386 * controller. 4387 */ 4388 ndevs_to_allocate = nphysicals + nlogicals + MAX_EXT_TARGETS + 1; 4389 4390 hpsa_ext_ctrl_present(h, physdev_list); 4391 4392 /* Allocate the per device structures */ 4393 for (i = 0; i < ndevs_to_allocate; i++) { 4394 if (i >= HPSA_MAX_DEVICES) { 4395 dev_warn(&h->pdev->dev, "maximum devices (%d) exceeded." 4396 " %d devices ignored.\n", HPSA_MAX_DEVICES, 4397 ndevs_to_allocate - HPSA_MAX_DEVICES); 4398 break; 4399 } 4400 4401 currentsd[i] = kzalloc(sizeof(*currentsd[i]), GFP_KERNEL); 4402 if (!currentsd[i]) { 4403 h->drv_req_rescan = 1; 4404 goto out; 4405 } 4406 ndev_allocated++; 4407 } 4408 4409 if (is_scsi_rev_5(h)) 4410 raid_ctlr_position = 0; 4411 else 4412 raid_ctlr_position = nphysicals + nlogicals; 4413 4414 /* adjust our table of devices */ 4415 for (i = 0; i < nphysicals + nlogicals + 1; i++) { 4416 u8 *lunaddrbytes, is_OBDR = 0; 4417 int rc = 0; 4418 int phys_dev_index = i - (raid_ctlr_position == 0); 4419 bool skip_device = false; 4420 4421 memset(tmpdevice, 0, sizeof(*tmpdevice)); 4422 4423 physical_device = i < nphysicals + (raid_ctlr_position == 0); 4424 4425 /* Figure out where the LUN ID info is coming from */ 4426 lunaddrbytes = figure_lunaddrbytes(h, raid_ctlr_position, 4427 i, nphysicals, nlogicals, physdev_list, logdev_list); 4428 4429 /* Determine if this is a lun from an external target array */ 4430 tmpdevice->external = 4431 figure_external_status(h, raid_ctlr_position, i, 4432 nphysicals, nlocal_logicals); 4433 4434 /* 4435 * Skip over some devices such as a spare. 4436 */ 4437 if (phys_dev_index >= 0 && !tmpdevice->external && 4438 physical_device) { 4439 skip_device = hpsa_skip_device(h, lunaddrbytes, 4440 &physdev_list->LUN[phys_dev_index]); 4441 if (skip_device) 4442 continue; 4443 } 4444 4445 /* Get device type, vendor, model, device id, raid_map */ 4446 rc = hpsa_update_device_info(h, lunaddrbytes, tmpdevice, 4447 &is_OBDR); 4448 if (rc == -ENOMEM) { 4449 dev_warn(&h->pdev->dev, 4450 "Out of memory, rescan deferred.\n"); 4451 h->drv_req_rescan = 1; 4452 goto out; 4453 } 4454 if (rc) { 4455 h->drv_req_rescan = 1; 4456 continue; 4457 } 4458 4459 figure_bus_target_lun(h, lunaddrbytes, tmpdevice); 4460 this_device = currentsd[ncurrent]; 4461 4462 *this_device = *tmpdevice; 4463 this_device->physical_device = physical_device; 4464 4465 /* 4466 * Expose all devices except for physical devices that 4467 * are masked. 4468 */ 4469 if (MASKED_DEVICE(lunaddrbytes) && this_device->physical_device) 4470 this_device->expose_device = 0; 4471 else 4472 this_device->expose_device = 1; 4473 4474 4475 /* 4476 * Get the SAS address for physical devices that are exposed. 4477 */ 4478 if (this_device->physical_device && this_device->expose_device) 4479 hpsa_get_sas_address(h, lunaddrbytes, this_device); 4480 4481 switch (this_device->devtype) { 4482 case TYPE_ROM: 4483 /* We don't *really* support actual CD-ROM devices, 4484 * just "One Button Disaster Recovery" tape drive 4485 * which temporarily pretends to be a CD-ROM drive. 4486 * So we check that the device is really an OBDR tape 4487 * device by checking for "$DR-10" in bytes 43-48 of 4488 * the inquiry data. 4489 */ 4490 if (is_OBDR) 4491 ncurrent++; 4492 break; 4493 case TYPE_DISK: 4494 case TYPE_ZBC: 4495 if (this_device->physical_device) { 4496 /* The disk is in HBA mode. */ 4497 /* Never use RAID mapper in HBA mode. */ 4498 this_device->offload_enabled = 0; 4499 hpsa_get_ioaccel_drive_info(h, this_device, 4500 physdev_list, phys_dev_index, id_phys); 4501 hpsa_get_path_info(this_device, 4502 physdev_list, phys_dev_index, id_phys); 4503 } 4504 ncurrent++; 4505 break; 4506 case TYPE_TAPE: 4507 case TYPE_MEDIUM_CHANGER: 4508 ncurrent++; 4509 break; 4510 case TYPE_ENCLOSURE: 4511 if (!this_device->external) 4512 hpsa_get_enclosure_info(h, lunaddrbytes, 4513 physdev_list, phys_dev_index, 4514 this_device); 4515 ncurrent++; 4516 break; 4517 case TYPE_RAID: 4518 /* Only present the Smartarray HBA as a RAID controller. 4519 * If it's a RAID controller other than the HBA itself 4520 * (an external RAID controller, MSA500 or similar) 4521 * don't present it. 4522 */ 4523 if (!is_hba_lunid(lunaddrbytes)) 4524 break; 4525 ncurrent++; 4526 break; 4527 default: 4528 break; 4529 } 4530 if (ncurrent >= HPSA_MAX_DEVICES) 4531 break; 4532 } 4533 4534 if (h->sas_host == NULL) { 4535 int rc = 0; 4536 4537 rc = hpsa_add_sas_host(h); 4538 if (rc) { 4539 dev_warn(&h->pdev->dev, 4540 "Could not add sas host %d\n", rc); 4541 goto out; 4542 } 4543 } 4544 4545 adjust_hpsa_scsi_table(h, currentsd, ncurrent); 4546 out: 4547 kfree(tmpdevice); 4548 for (i = 0; i < ndev_allocated; i++) 4549 kfree(currentsd[i]); 4550 kfree(currentsd); 4551 kfree(physdev_list); 4552 kfree(logdev_list); 4553 kfree(id_ctlr); 4554 kfree(id_phys); 4555 } 4556 4557 static void hpsa_set_sg_descriptor(struct SGDescriptor *desc, 4558 struct scatterlist *sg) 4559 { 4560 u64 addr64 = (u64) sg_dma_address(sg); 4561 unsigned int len = sg_dma_len(sg); 4562 4563 desc->Addr = cpu_to_le64(addr64); 4564 desc->Len = cpu_to_le32(len); 4565 desc->Ext = 0; 4566 } 4567 4568 /* 4569 * hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci 4570 * dma mapping and fills in the scatter gather entries of the 4571 * hpsa command, cp. 4572 */ 4573 static int hpsa_scatter_gather(struct ctlr_info *h, 4574 struct CommandList *cp, 4575 struct scsi_cmnd *cmd) 4576 { 4577 struct scatterlist *sg; 4578 int use_sg, i, sg_limit, chained; 4579 struct SGDescriptor *curr_sg; 4580 4581 BUG_ON(scsi_sg_count(cmd) > h->maxsgentries); 4582 4583 use_sg = scsi_dma_map(cmd); 4584 if (use_sg < 0) 4585 return use_sg; 4586 4587 if (!use_sg) 4588 goto sglist_finished; 4589 4590 /* 4591 * If the number of entries is greater than the max for a single list, 4592 * then we have a chained list; we will set up all but one entry in the 4593 * first list (the last entry is saved for link information); 4594 * otherwise, we don't have a chained list and we'll set up at each of 4595 * the entries in the one list. 4596 */ 4597 curr_sg = cp->SG; 4598 chained = use_sg > h->max_cmd_sg_entries; 4599 sg_limit = chained ? h->max_cmd_sg_entries - 1 : use_sg; 4600 scsi_for_each_sg(cmd, sg, sg_limit, i) { 4601 hpsa_set_sg_descriptor(curr_sg, sg); 4602 curr_sg++; 4603 } 4604 4605 if (chained) { 4606 /* 4607 * Continue with the chained list. Set curr_sg to the chained 4608 * list. Modify the limit to the total count less the entries 4609 * we've already set up. Resume the scan at the list entry 4610 * where the previous loop left off. 4611 */ 4612 curr_sg = h->cmd_sg_list[cp->cmdindex]; 4613 sg_limit = use_sg - sg_limit; 4614 for_each_sg(sg, sg, sg_limit, i) { 4615 hpsa_set_sg_descriptor(curr_sg, sg); 4616 curr_sg++; 4617 } 4618 } 4619 4620 /* Back the pointer up to the last entry and mark it as "last". */ 4621 (curr_sg - 1)->Ext = cpu_to_le32(HPSA_SG_LAST); 4622 4623 if (use_sg + chained > h->maxSG) 4624 h->maxSG = use_sg + chained; 4625 4626 if (chained) { 4627 cp->Header.SGList = h->max_cmd_sg_entries; 4628 cp->Header.SGTotal = cpu_to_le16(use_sg + 1); 4629 if (hpsa_map_sg_chain_block(h, cp)) { 4630 scsi_dma_unmap(cmd); 4631 return -1; 4632 } 4633 return 0; 4634 } 4635 4636 sglist_finished: 4637 4638 cp->Header.SGList = (u8) use_sg; /* no. SGs contig in this cmd */ 4639 cp->Header.SGTotal = cpu_to_le16(use_sg); /* total sgs in cmd list */ 4640 return 0; 4641 } 4642 4643 static inline void warn_zero_length_transfer(struct ctlr_info *h, 4644 u8 *cdb, int cdb_len, 4645 const char *func) 4646 { 4647 dev_warn(&h->pdev->dev, 4648 "%s: Blocking zero-length request: CDB:%*phN\n", 4649 func, cdb_len, cdb); 4650 } 4651 4652 #define IO_ACCEL_INELIGIBLE 1 4653 /* zero-length transfers trigger hardware errors. */ 4654 static bool is_zero_length_transfer(u8 *cdb) 4655 { 4656 u32 block_cnt; 4657 4658 /* Block zero-length transfer sizes on certain commands. */ 4659 switch (cdb[0]) { 4660 case READ_10: 4661 case WRITE_10: 4662 case VERIFY: /* 0x2F */ 4663 case WRITE_VERIFY: /* 0x2E */ 4664 block_cnt = get_unaligned_be16(&cdb[7]); 4665 break; 4666 case READ_12: 4667 case WRITE_12: 4668 case VERIFY_12: /* 0xAF */ 4669 case WRITE_VERIFY_12: /* 0xAE */ 4670 block_cnt = get_unaligned_be32(&cdb[6]); 4671 break; 4672 case READ_16: 4673 case WRITE_16: 4674 case VERIFY_16: /* 0x8F */ 4675 block_cnt = get_unaligned_be32(&cdb[10]); 4676 break; 4677 default: 4678 return false; 4679 } 4680 4681 return block_cnt == 0; 4682 } 4683 4684 static int fixup_ioaccel_cdb(u8 *cdb, int *cdb_len) 4685 { 4686 int is_write = 0; 4687 u32 block; 4688 u32 block_cnt; 4689 4690 /* Perform some CDB fixups if needed using 10 byte reads/writes only */ 4691 switch (cdb[0]) { 4692 case WRITE_6: 4693 case WRITE_12: 4694 is_write = 1; 4695 fallthrough; 4696 case READ_6: 4697 case READ_12: 4698 if (*cdb_len == 6) { 4699 block = (((cdb[1] & 0x1F) << 16) | 4700 (cdb[2] << 8) | 4701 cdb[3]); 4702 block_cnt = cdb[4]; 4703 if (block_cnt == 0) 4704 block_cnt = 256; 4705 } else { 4706 BUG_ON(*cdb_len != 12); 4707 block = get_unaligned_be32(&cdb[2]); 4708 block_cnt = get_unaligned_be32(&cdb[6]); 4709 } 4710 if (block_cnt > 0xffff) 4711 return IO_ACCEL_INELIGIBLE; 4712 4713 cdb[0] = is_write ? WRITE_10 : READ_10; 4714 cdb[1] = 0; 4715 cdb[2] = (u8) (block >> 24); 4716 cdb[3] = (u8) (block >> 16); 4717 cdb[4] = (u8) (block >> 8); 4718 cdb[5] = (u8) (block); 4719 cdb[6] = 0; 4720 cdb[7] = (u8) (block_cnt >> 8); 4721 cdb[8] = (u8) (block_cnt); 4722 cdb[9] = 0; 4723 *cdb_len = 10; 4724 break; 4725 } 4726 return 0; 4727 } 4728 4729 static int hpsa_scsi_ioaccel1_queue_command(struct ctlr_info *h, 4730 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len, 4731 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk) 4732 { 4733 struct scsi_cmnd *cmd = c->scsi_cmd; 4734 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[c->cmdindex]; 4735 unsigned int len; 4736 unsigned int total_len = 0; 4737 struct scatterlist *sg; 4738 u64 addr64; 4739 int use_sg, i; 4740 struct SGDescriptor *curr_sg; 4741 u32 control = IOACCEL1_CONTROL_SIMPLEQUEUE; 4742 4743 /* TODO: implement chaining support */ 4744 if (scsi_sg_count(cmd) > h->ioaccel_maxsg) { 4745 atomic_dec(&phys_disk->ioaccel_cmds_out); 4746 return IO_ACCEL_INELIGIBLE; 4747 } 4748 4749 BUG_ON(cmd->cmd_len > IOACCEL1_IOFLAGS_CDBLEN_MAX); 4750 4751 if (is_zero_length_transfer(cdb)) { 4752 warn_zero_length_transfer(h, cdb, cdb_len, __func__); 4753 atomic_dec(&phys_disk->ioaccel_cmds_out); 4754 return IO_ACCEL_INELIGIBLE; 4755 } 4756 4757 if (fixup_ioaccel_cdb(cdb, &cdb_len)) { 4758 atomic_dec(&phys_disk->ioaccel_cmds_out); 4759 return IO_ACCEL_INELIGIBLE; 4760 } 4761 4762 c->cmd_type = CMD_IOACCEL1; 4763 4764 /* Adjust the DMA address to point to the accelerated command buffer */ 4765 c->busaddr = (u32) h->ioaccel_cmd_pool_dhandle + 4766 (c->cmdindex * sizeof(*cp)); 4767 BUG_ON(c->busaddr & 0x0000007F); 4768 4769 use_sg = scsi_dma_map(cmd); 4770 if (use_sg < 0) { 4771 atomic_dec(&phys_disk->ioaccel_cmds_out); 4772 return use_sg; 4773 } 4774 4775 if (use_sg) { 4776 curr_sg = cp->SG; 4777 scsi_for_each_sg(cmd, sg, use_sg, i) { 4778 addr64 = (u64) sg_dma_address(sg); 4779 len = sg_dma_len(sg); 4780 total_len += len; 4781 curr_sg->Addr = cpu_to_le64(addr64); 4782 curr_sg->Len = cpu_to_le32(len); 4783 curr_sg->Ext = cpu_to_le32(0); 4784 curr_sg++; 4785 } 4786 (--curr_sg)->Ext = cpu_to_le32(HPSA_SG_LAST); 4787 4788 switch (cmd->sc_data_direction) { 4789 case DMA_TO_DEVICE: 4790 control |= IOACCEL1_CONTROL_DATA_OUT; 4791 break; 4792 case DMA_FROM_DEVICE: 4793 control |= IOACCEL1_CONTROL_DATA_IN; 4794 break; 4795 case DMA_NONE: 4796 control |= IOACCEL1_CONTROL_NODATAXFER; 4797 break; 4798 default: 4799 dev_err(&h->pdev->dev, "unknown data direction: %d\n", 4800 cmd->sc_data_direction); 4801 BUG(); 4802 break; 4803 } 4804 } else { 4805 control |= IOACCEL1_CONTROL_NODATAXFER; 4806 } 4807 4808 c->Header.SGList = use_sg; 4809 /* Fill out the command structure to submit */ 4810 cp->dev_handle = cpu_to_le16(ioaccel_handle & 0xFFFF); 4811 cp->transfer_len = cpu_to_le32(total_len); 4812 cp->io_flags = cpu_to_le16(IOACCEL1_IOFLAGS_IO_REQ | 4813 (cdb_len & IOACCEL1_IOFLAGS_CDBLEN_MASK)); 4814 cp->control = cpu_to_le32(control); 4815 memcpy(cp->CDB, cdb, cdb_len); 4816 memcpy(cp->CISS_LUN, scsi3addr, 8); 4817 /* Tag was already set at init time. */ 4818 enqueue_cmd_and_start_io(h, c); 4819 return 0; 4820 } 4821 4822 /* 4823 * Queue a command directly to a device behind the controller using the 4824 * I/O accelerator path. 4825 */ 4826 static int hpsa_scsi_ioaccel_direct_map(struct ctlr_info *h, 4827 struct CommandList *c) 4828 { 4829 struct scsi_cmnd *cmd = c->scsi_cmd; 4830 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata; 4831 4832 if (!dev) 4833 return -1; 4834 4835 c->phys_disk = dev; 4836 4837 if (dev->in_reset) 4838 return -1; 4839 4840 return hpsa_scsi_ioaccel_queue_command(h, c, dev->ioaccel_handle, 4841 cmd->cmnd, cmd->cmd_len, dev->scsi3addr, dev); 4842 } 4843 4844 /* 4845 * Set encryption parameters for the ioaccel2 request 4846 */ 4847 static void set_encrypt_ioaccel2(struct ctlr_info *h, 4848 struct CommandList *c, struct io_accel2_cmd *cp) 4849 { 4850 struct scsi_cmnd *cmd = c->scsi_cmd; 4851 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata; 4852 struct raid_map_data *map = &dev->raid_map; 4853 u64 first_block; 4854 4855 /* Are we doing encryption on this device */ 4856 if (!(le16_to_cpu(map->flags) & RAID_MAP_FLAG_ENCRYPT_ON)) 4857 return; 4858 /* Set the data encryption key index. */ 4859 cp->dekindex = map->dekindex; 4860 4861 /* Set the encryption enable flag, encoded into direction field. */ 4862 cp->direction |= IOACCEL2_DIRECTION_ENCRYPT_MASK; 4863 4864 /* Set encryption tweak values based on logical block address 4865 * If block size is 512, tweak value is LBA. 4866 * For other block sizes, tweak is (LBA * block size)/ 512) 4867 */ 4868 switch (cmd->cmnd[0]) { 4869 /* Required? 6-byte cdbs eliminated by fixup_ioaccel_cdb */ 4870 case READ_6: 4871 case WRITE_6: 4872 first_block = (((cmd->cmnd[1] & 0x1F) << 16) | 4873 (cmd->cmnd[2] << 8) | 4874 cmd->cmnd[3]); 4875 break; 4876 case WRITE_10: 4877 case READ_10: 4878 /* Required? 12-byte cdbs eliminated by fixup_ioaccel_cdb */ 4879 case WRITE_12: 4880 case READ_12: 4881 first_block = get_unaligned_be32(&cmd->cmnd[2]); 4882 break; 4883 case WRITE_16: 4884 case READ_16: 4885 first_block = get_unaligned_be64(&cmd->cmnd[2]); 4886 break; 4887 default: 4888 dev_err(&h->pdev->dev, 4889 "ERROR: %s: size (0x%x) not supported for encryption\n", 4890 __func__, cmd->cmnd[0]); 4891 BUG(); 4892 break; 4893 } 4894 4895 if (le32_to_cpu(map->volume_blk_size) != 512) 4896 first_block = first_block * 4897 le32_to_cpu(map->volume_blk_size)/512; 4898 4899 cp->tweak_lower = cpu_to_le32(first_block); 4900 cp->tweak_upper = cpu_to_le32(first_block >> 32); 4901 } 4902 4903 static int hpsa_scsi_ioaccel2_queue_command(struct ctlr_info *h, 4904 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len, 4905 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk) 4906 { 4907 struct scsi_cmnd *cmd = c->scsi_cmd; 4908 struct io_accel2_cmd *cp = &h->ioaccel2_cmd_pool[c->cmdindex]; 4909 struct ioaccel2_sg_element *curr_sg; 4910 int use_sg, i; 4911 struct scatterlist *sg; 4912 u64 addr64; 4913 u32 len; 4914 u32 total_len = 0; 4915 4916 if (!cmd->device) 4917 return -1; 4918 4919 if (!cmd->device->hostdata) 4920 return -1; 4921 4922 BUG_ON(scsi_sg_count(cmd) > h->maxsgentries); 4923 4924 if (is_zero_length_transfer(cdb)) { 4925 warn_zero_length_transfer(h, cdb, cdb_len, __func__); 4926 atomic_dec(&phys_disk->ioaccel_cmds_out); 4927 return IO_ACCEL_INELIGIBLE; 4928 } 4929 4930 if (fixup_ioaccel_cdb(cdb, &cdb_len)) { 4931 atomic_dec(&phys_disk->ioaccel_cmds_out); 4932 return IO_ACCEL_INELIGIBLE; 4933 } 4934 4935 c->cmd_type = CMD_IOACCEL2; 4936 /* Adjust the DMA address to point to the accelerated command buffer */ 4937 c->busaddr = (u32) h->ioaccel2_cmd_pool_dhandle + 4938 (c->cmdindex * sizeof(*cp)); 4939 BUG_ON(c->busaddr & 0x0000007F); 4940 4941 memset(cp, 0, sizeof(*cp)); 4942 cp->IU_type = IOACCEL2_IU_TYPE; 4943 4944 use_sg = scsi_dma_map(cmd); 4945 if (use_sg < 0) { 4946 atomic_dec(&phys_disk->ioaccel_cmds_out); 4947 return use_sg; 4948 } 4949 4950 if (use_sg) { 4951 curr_sg = cp->sg; 4952 if (use_sg > h->ioaccel_maxsg) { 4953 addr64 = le64_to_cpu( 4954 h->ioaccel2_cmd_sg_list[c->cmdindex]->address); 4955 curr_sg->address = cpu_to_le64(addr64); 4956 curr_sg->length = 0; 4957 curr_sg->reserved[0] = 0; 4958 curr_sg->reserved[1] = 0; 4959 curr_sg->reserved[2] = 0; 4960 curr_sg->chain_indicator = IOACCEL2_CHAIN; 4961 4962 curr_sg = h->ioaccel2_cmd_sg_list[c->cmdindex]; 4963 } 4964 scsi_for_each_sg(cmd, sg, use_sg, i) { 4965 addr64 = (u64) sg_dma_address(sg); 4966 len = sg_dma_len(sg); 4967 total_len += len; 4968 curr_sg->address = cpu_to_le64(addr64); 4969 curr_sg->length = cpu_to_le32(len); 4970 curr_sg->reserved[0] = 0; 4971 curr_sg->reserved[1] = 0; 4972 curr_sg->reserved[2] = 0; 4973 curr_sg->chain_indicator = 0; 4974 curr_sg++; 4975 } 4976 4977 /* 4978 * Set the last s/g element bit 4979 */ 4980 (curr_sg - 1)->chain_indicator = IOACCEL2_LAST_SG; 4981 4982 switch (cmd->sc_data_direction) { 4983 case DMA_TO_DEVICE: 4984 cp->direction &= ~IOACCEL2_DIRECTION_MASK; 4985 cp->direction |= IOACCEL2_DIR_DATA_OUT; 4986 break; 4987 case DMA_FROM_DEVICE: 4988 cp->direction &= ~IOACCEL2_DIRECTION_MASK; 4989 cp->direction |= IOACCEL2_DIR_DATA_IN; 4990 break; 4991 case DMA_NONE: 4992 cp->direction &= ~IOACCEL2_DIRECTION_MASK; 4993 cp->direction |= IOACCEL2_DIR_NO_DATA; 4994 break; 4995 default: 4996 dev_err(&h->pdev->dev, "unknown data direction: %d\n", 4997 cmd->sc_data_direction); 4998 BUG(); 4999 break; 5000 } 5001 } else { 5002 cp->direction &= ~IOACCEL2_DIRECTION_MASK; 5003 cp->direction |= IOACCEL2_DIR_NO_DATA; 5004 } 5005 5006 /* Set encryption parameters, if necessary */ 5007 set_encrypt_ioaccel2(h, c, cp); 5008 5009 cp->scsi_nexus = cpu_to_le32(ioaccel_handle); 5010 cp->Tag = cpu_to_le32(c->cmdindex << DIRECT_LOOKUP_SHIFT); 5011 memcpy(cp->cdb, cdb, sizeof(cp->cdb)); 5012 5013 cp->data_len = cpu_to_le32(total_len); 5014 cp->err_ptr = cpu_to_le64(c->busaddr + 5015 offsetof(struct io_accel2_cmd, error_data)); 5016 cp->err_len = cpu_to_le32(sizeof(cp->error_data)); 5017 5018 /* fill in sg elements */ 5019 if (use_sg > h->ioaccel_maxsg) { 5020 cp->sg_count = 1; 5021 cp->sg[0].length = cpu_to_le32(use_sg * sizeof(cp->sg[0])); 5022 if (hpsa_map_ioaccel2_sg_chain_block(h, cp, c)) { 5023 atomic_dec(&phys_disk->ioaccel_cmds_out); 5024 scsi_dma_unmap(cmd); 5025 return -1; 5026 } 5027 } else 5028 cp->sg_count = (u8) use_sg; 5029 5030 if (phys_disk->in_reset) { 5031 cmd->result = DID_RESET << 16; 5032 return -1; 5033 } 5034 5035 enqueue_cmd_and_start_io(h, c); 5036 return 0; 5037 } 5038 5039 /* 5040 * Queue a command to the correct I/O accelerator path. 5041 */ 5042 static int hpsa_scsi_ioaccel_queue_command(struct ctlr_info *h, 5043 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len, 5044 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk) 5045 { 5046 if (!c->scsi_cmd->device) 5047 return -1; 5048 5049 if (!c->scsi_cmd->device->hostdata) 5050 return -1; 5051 5052 if (phys_disk->in_reset) 5053 return -1; 5054 5055 /* Try to honor the device's queue depth */ 5056 if (atomic_inc_return(&phys_disk->ioaccel_cmds_out) > 5057 phys_disk->queue_depth) { 5058 atomic_dec(&phys_disk->ioaccel_cmds_out); 5059 return IO_ACCEL_INELIGIBLE; 5060 } 5061 if (h->transMethod & CFGTBL_Trans_io_accel1) 5062 return hpsa_scsi_ioaccel1_queue_command(h, c, ioaccel_handle, 5063 cdb, cdb_len, scsi3addr, 5064 phys_disk); 5065 else 5066 return hpsa_scsi_ioaccel2_queue_command(h, c, ioaccel_handle, 5067 cdb, cdb_len, scsi3addr, 5068 phys_disk); 5069 } 5070 5071 static void raid_map_helper(struct raid_map_data *map, 5072 int offload_to_mirror, u32 *map_index, u32 *current_group) 5073 { 5074 if (offload_to_mirror == 0) { 5075 /* use physical disk in the first mirrored group. */ 5076 *map_index %= le16_to_cpu(map->data_disks_per_row); 5077 return; 5078 } 5079 do { 5080 /* determine mirror group that *map_index indicates */ 5081 *current_group = *map_index / 5082 le16_to_cpu(map->data_disks_per_row); 5083 if (offload_to_mirror == *current_group) 5084 continue; 5085 if (*current_group < le16_to_cpu(map->layout_map_count) - 1) { 5086 /* select map index from next group */ 5087 *map_index += le16_to_cpu(map->data_disks_per_row); 5088 (*current_group)++; 5089 } else { 5090 /* select map index from first group */ 5091 *map_index %= le16_to_cpu(map->data_disks_per_row); 5092 *current_group = 0; 5093 } 5094 } while (offload_to_mirror != *current_group); 5095 } 5096 5097 /* 5098 * Attempt to perform offload RAID mapping for a logical volume I/O. 5099 */ 5100 static int hpsa_scsi_ioaccel_raid_map(struct ctlr_info *h, 5101 struct CommandList *c) 5102 { 5103 struct scsi_cmnd *cmd = c->scsi_cmd; 5104 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata; 5105 struct raid_map_data *map = &dev->raid_map; 5106 struct raid_map_disk_data *dd = &map->data[0]; 5107 int is_write = 0; 5108 u32 map_index; 5109 u64 first_block, last_block; 5110 u32 block_cnt; 5111 u32 blocks_per_row; 5112 u64 first_row, last_row; 5113 u32 first_row_offset, last_row_offset; 5114 u32 first_column, last_column; 5115 u64 r0_first_row, r0_last_row; 5116 u32 r5or6_blocks_per_row; 5117 u64 r5or6_first_row, r5or6_last_row; 5118 u32 r5or6_first_row_offset, r5or6_last_row_offset; 5119 u32 r5or6_first_column, r5or6_last_column; 5120 u32 total_disks_per_row; 5121 u32 stripesize; 5122 u32 first_group, last_group, current_group; 5123 u32 map_row; 5124 u32 disk_handle; 5125 u64 disk_block; 5126 u32 disk_block_cnt; 5127 u8 cdb[16]; 5128 u8 cdb_len; 5129 u16 strip_size; 5130 #if BITS_PER_LONG == 32 5131 u64 tmpdiv; 5132 #endif 5133 int offload_to_mirror; 5134 5135 if (!dev) 5136 return -1; 5137 5138 if (dev->in_reset) 5139 return -1; 5140 5141 /* check for valid opcode, get LBA and block count */ 5142 switch (cmd->cmnd[0]) { 5143 case WRITE_6: 5144 is_write = 1; 5145 fallthrough; 5146 case READ_6: 5147 first_block = (((cmd->cmnd[1] & 0x1F) << 16) | 5148 (cmd->cmnd[2] << 8) | 5149 cmd->cmnd[3]); 5150 block_cnt = cmd->cmnd[4]; 5151 if (block_cnt == 0) 5152 block_cnt = 256; 5153 break; 5154 case WRITE_10: 5155 is_write = 1; 5156 fallthrough; 5157 case READ_10: 5158 first_block = 5159 (((u64) cmd->cmnd[2]) << 24) | 5160 (((u64) cmd->cmnd[3]) << 16) | 5161 (((u64) cmd->cmnd[4]) << 8) | 5162 cmd->cmnd[5]; 5163 block_cnt = 5164 (((u32) cmd->cmnd[7]) << 8) | 5165 cmd->cmnd[8]; 5166 break; 5167 case WRITE_12: 5168 is_write = 1; 5169 fallthrough; 5170 case READ_12: 5171 first_block = 5172 (((u64) cmd->cmnd[2]) << 24) | 5173 (((u64) cmd->cmnd[3]) << 16) | 5174 (((u64) cmd->cmnd[4]) << 8) | 5175 cmd->cmnd[5]; 5176 block_cnt = 5177 (((u32) cmd->cmnd[6]) << 24) | 5178 (((u32) cmd->cmnd[7]) << 16) | 5179 (((u32) cmd->cmnd[8]) << 8) | 5180 cmd->cmnd[9]; 5181 break; 5182 case WRITE_16: 5183 is_write = 1; 5184 fallthrough; 5185 case READ_16: 5186 first_block = 5187 (((u64) cmd->cmnd[2]) << 56) | 5188 (((u64) cmd->cmnd[3]) << 48) | 5189 (((u64) cmd->cmnd[4]) << 40) | 5190 (((u64) cmd->cmnd[5]) << 32) | 5191 (((u64) cmd->cmnd[6]) << 24) | 5192 (((u64) cmd->cmnd[7]) << 16) | 5193 (((u64) cmd->cmnd[8]) << 8) | 5194 cmd->cmnd[9]; 5195 block_cnt = 5196 (((u32) cmd->cmnd[10]) << 24) | 5197 (((u32) cmd->cmnd[11]) << 16) | 5198 (((u32) cmd->cmnd[12]) << 8) | 5199 cmd->cmnd[13]; 5200 break; 5201 default: 5202 return IO_ACCEL_INELIGIBLE; /* process via normal I/O path */ 5203 } 5204 last_block = first_block + block_cnt - 1; 5205 5206 /* check for write to non-RAID-0 */ 5207 if (is_write && dev->raid_level != 0) 5208 return IO_ACCEL_INELIGIBLE; 5209 5210 /* check for invalid block or wraparound */ 5211 if (last_block >= le64_to_cpu(map->volume_blk_cnt) || 5212 last_block < first_block) 5213 return IO_ACCEL_INELIGIBLE; 5214 5215 /* calculate stripe information for the request */ 5216 blocks_per_row = le16_to_cpu(map->data_disks_per_row) * 5217 le16_to_cpu(map->strip_size); 5218 strip_size = le16_to_cpu(map->strip_size); 5219 #if BITS_PER_LONG == 32 5220 tmpdiv = first_block; 5221 (void) do_div(tmpdiv, blocks_per_row); 5222 first_row = tmpdiv; 5223 tmpdiv = last_block; 5224 (void) do_div(tmpdiv, blocks_per_row); 5225 last_row = tmpdiv; 5226 first_row_offset = (u32) (first_block - (first_row * blocks_per_row)); 5227 last_row_offset = (u32) (last_block - (last_row * blocks_per_row)); 5228 tmpdiv = first_row_offset; 5229 (void) do_div(tmpdiv, strip_size); 5230 first_column = tmpdiv; 5231 tmpdiv = last_row_offset; 5232 (void) do_div(tmpdiv, strip_size); 5233 last_column = tmpdiv; 5234 #else 5235 first_row = first_block / blocks_per_row; 5236 last_row = last_block / blocks_per_row; 5237 first_row_offset = (u32) (first_block - (first_row * blocks_per_row)); 5238 last_row_offset = (u32) (last_block - (last_row * blocks_per_row)); 5239 first_column = first_row_offset / strip_size; 5240 last_column = last_row_offset / strip_size; 5241 #endif 5242 5243 /* if this isn't a single row/column then give to the controller */ 5244 if ((first_row != last_row) || (first_column != last_column)) 5245 return IO_ACCEL_INELIGIBLE; 5246 5247 /* proceeding with driver mapping */ 5248 total_disks_per_row = le16_to_cpu(map->data_disks_per_row) + 5249 le16_to_cpu(map->metadata_disks_per_row); 5250 map_row = ((u32)(first_row >> map->parity_rotation_shift)) % 5251 le16_to_cpu(map->row_cnt); 5252 map_index = (map_row * total_disks_per_row) + first_column; 5253 5254 switch (dev->raid_level) { 5255 case HPSA_RAID_0: 5256 break; /* nothing special to do */ 5257 case HPSA_RAID_1: 5258 /* Handles load balance across RAID 1 members. 5259 * (2-drive R1 and R10 with even # of drives.) 5260 * Appropriate for SSDs, not optimal for HDDs 5261 * Ensure we have the correct raid_map. 5262 */ 5263 if (le16_to_cpu(map->layout_map_count) != 2) { 5264 hpsa_turn_off_ioaccel_for_device(dev); 5265 return IO_ACCEL_INELIGIBLE; 5266 } 5267 if (dev->offload_to_mirror) 5268 map_index += le16_to_cpu(map->data_disks_per_row); 5269 dev->offload_to_mirror = !dev->offload_to_mirror; 5270 break; 5271 case HPSA_RAID_ADM: 5272 /* Handles N-way mirrors (R1-ADM) 5273 * and R10 with # of drives divisible by 3.) 5274 * Ensure we have the correct raid_map. 5275 */ 5276 if (le16_to_cpu(map->layout_map_count) != 3) { 5277 hpsa_turn_off_ioaccel_for_device(dev); 5278 return IO_ACCEL_INELIGIBLE; 5279 } 5280 5281 offload_to_mirror = dev->offload_to_mirror; 5282 raid_map_helper(map, offload_to_mirror, 5283 &map_index, ¤t_group); 5284 /* set mirror group to use next time */ 5285 offload_to_mirror = 5286 (offload_to_mirror >= 5287 le16_to_cpu(map->layout_map_count) - 1) 5288 ? 0 : offload_to_mirror + 1; 5289 dev->offload_to_mirror = offload_to_mirror; 5290 /* Avoid direct use of dev->offload_to_mirror within this 5291 * function since multiple threads might simultaneously 5292 * increment it beyond the range of dev->layout_map_count -1. 5293 */ 5294 break; 5295 case HPSA_RAID_5: 5296 case HPSA_RAID_6: 5297 if (le16_to_cpu(map->layout_map_count) <= 1) 5298 break; 5299 5300 /* Verify first and last block are in same RAID group */ 5301 r5or6_blocks_per_row = 5302 le16_to_cpu(map->strip_size) * 5303 le16_to_cpu(map->data_disks_per_row); 5304 if (r5or6_blocks_per_row == 0) { 5305 hpsa_turn_off_ioaccel_for_device(dev); 5306 return IO_ACCEL_INELIGIBLE; 5307 } 5308 stripesize = r5or6_blocks_per_row * 5309 le16_to_cpu(map->layout_map_count); 5310 #if BITS_PER_LONG == 32 5311 tmpdiv = first_block; 5312 first_group = do_div(tmpdiv, stripesize); 5313 tmpdiv = first_group; 5314 (void) do_div(tmpdiv, r5or6_blocks_per_row); 5315 first_group = tmpdiv; 5316 tmpdiv = last_block; 5317 last_group = do_div(tmpdiv, stripesize); 5318 tmpdiv = last_group; 5319 (void) do_div(tmpdiv, r5or6_blocks_per_row); 5320 last_group = tmpdiv; 5321 #else 5322 first_group = (first_block % stripesize) / r5or6_blocks_per_row; 5323 last_group = (last_block % stripesize) / r5or6_blocks_per_row; 5324 #endif 5325 if (first_group != last_group) 5326 return IO_ACCEL_INELIGIBLE; 5327 5328 /* Verify request is in a single row of RAID 5/6 */ 5329 #if BITS_PER_LONG == 32 5330 tmpdiv = first_block; 5331 (void) do_div(tmpdiv, stripesize); 5332 first_row = r5or6_first_row = r0_first_row = tmpdiv; 5333 tmpdiv = last_block; 5334 (void) do_div(tmpdiv, stripesize); 5335 r5or6_last_row = r0_last_row = tmpdiv; 5336 #else 5337 first_row = r5or6_first_row = r0_first_row = 5338 first_block / stripesize; 5339 r5or6_last_row = r0_last_row = last_block / stripesize; 5340 #endif 5341 if (r5or6_first_row != r5or6_last_row) 5342 return IO_ACCEL_INELIGIBLE; 5343 5344 5345 /* Verify request is in a single column */ 5346 #if BITS_PER_LONG == 32 5347 tmpdiv = first_block; 5348 first_row_offset = do_div(tmpdiv, stripesize); 5349 tmpdiv = first_row_offset; 5350 first_row_offset = (u32) do_div(tmpdiv, r5or6_blocks_per_row); 5351 r5or6_first_row_offset = first_row_offset; 5352 tmpdiv = last_block; 5353 r5or6_last_row_offset = do_div(tmpdiv, stripesize); 5354 tmpdiv = r5or6_last_row_offset; 5355 r5or6_last_row_offset = do_div(tmpdiv, r5or6_blocks_per_row); 5356 tmpdiv = r5or6_first_row_offset; 5357 (void) do_div(tmpdiv, map->strip_size); 5358 first_column = r5or6_first_column = tmpdiv; 5359 tmpdiv = r5or6_last_row_offset; 5360 (void) do_div(tmpdiv, map->strip_size); 5361 r5or6_last_column = tmpdiv; 5362 #else 5363 first_row_offset = r5or6_first_row_offset = 5364 (u32)((first_block % stripesize) % 5365 r5or6_blocks_per_row); 5366 5367 r5or6_last_row_offset = 5368 (u32)((last_block % stripesize) % 5369 r5or6_blocks_per_row); 5370 5371 first_column = r5or6_first_column = 5372 r5or6_first_row_offset / le16_to_cpu(map->strip_size); 5373 r5or6_last_column = 5374 r5or6_last_row_offset / le16_to_cpu(map->strip_size); 5375 #endif 5376 if (r5or6_first_column != r5or6_last_column) 5377 return IO_ACCEL_INELIGIBLE; 5378 5379 /* Request is eligible */ 5380 map_row = ((u32)(first_row >> map->parity_rotation_shift)) % 5381 le16_to_cpu(map->row_cnt); 5382 5383 map_index = (first_group * 5384 (le16_to_cpu(map->row_cnt) * total_disks_per_row)) + 5385 (map_row * total_disks_per_row) + first_column; 5386 break; 5387 default: 5388 return IO_ACCEL_INELIGIBLE; 5389 } 5390 5391 if (unlikely(map_index >= RAID_MAP_MAX_ENTRIES)) 5392 return IO_ACCEL_INELIGIBLE; 5393 5394 c->phys_disk = dev->phys_disk[map_index]; 5395 if (!c->phys_disk) 5396 return IO_ACCEL_INELIGIBLE; 5397 5398 disk_handle = dd[map_index].ioaccel_handle; 5399 disk_block = le64_to_cpu(map->disk_starting_blk) + 5400 first_row * le16_to_cpu(map->strip_size) + 5401 (first_row_offset - first_column * 5402 le16_to_cpu(map->strip_size)); 5403 disk_block_cnt = block_cnt; 5404 5405 /* handle differing logical/physical block sizes */ 5406 if (map->phys_blk_shift) { 5407 disk_block <<= map->phys_blk_shift; 5408 disk_block_cnt <<= map->phys_blk_shift; 5409 } 5410 BUG_ON(disk_block_cnt > 0xffff); 5411 5412 /* build the new CDB for the physical disk I/O */ 5413 if (disk_block > 0xffffffff) { 5414 cdb[0] = is_write ? WRITE_16 : READ_16; 5415 cdb[1] = 0; 5416 cdb[2] = (u8) (disk_block >> 56); 5417 cdb[3] = (u8) (disk_block >> 48); 5418 cdb[4] = (u8) (disk_block >> 40); 5419 cdb[5] = (u8) (disk_block >> 32); 5420 cdb[6] = (u8) (disk_block >> 24); 5421 cdb[7] = (u8) (disk_block >> 16); 5422 cdb[8] = (u8) (disk_block >> 8); 5423 cdb[9] = (u8) (disk_block); 5424 cdb[10] = (u8) (disk_block_cnt >> 24); 5425 cdb[11] = (u8) (disk_block_cnt >> 16); 5426 cdb[12] = (u8) (disk_block_cnt >> 8); 5427 cdb[13] = (u8) (disk_block_cnt); 5428 cdb[14] = 0; 5429 cdb[15] = 0; 5430 cdb_len = 16; 5431 } else { 5432 cdb[0] = is_write ? WRITE_10 : READ_10; 5433 cdb[1] = 0; 5434 cdb[2] = (u8) (disk_block >> 24); 5435 cdb[3] = (u8) (disk_block >> 16); 5436 cdb[4] = (u8) (disk_block >> 8); 5437 cdb[5] = (u8) (disk_block); 5438 cdb[6] = 0; 5439 cdb[7] = (u8) (disk_block_cnt >> 8); 5440 cdb[8] = (u8) (disk_block_cnt); 5441 cdb[9] = 0; 5442 cdb_len = 10; 5443 } 5444 return hpsa_scsi_ioaccel_queue_command(h, c, disk_handle, cdb, cdb_len, 5445 dev->scsi3addr, 5446 dev->phys_disk[map_index]); 5447 } 5448 5449 /* 5450 * Submit commands down the "normal" RAID stack path 5451 * All callers to hpsa_ciss_submit must check lockup_detected 5452 * beforehand, before (opt.) and after calling cmd_alloc 5453 */ 5454 static int hpsa_ciss_submit(struct ctlr_info *h, 5455 struct CommandList *c, struct scsi_cmnd *cmd, 5456 struct hpsa_scsi_dev_t *dev) 5457 { 5458 cmd->host_scribble = (unsigned char *) c; 5459 c->cmd_type = CMD_SCSI; 5460 c->scsi_cmd = cmd; 5461 c->Header.ReplyQueue = 0; /* unused in simple mode */ 5462 memcpy(&c->Header.LUN.LunAddrBytes[0], &dev->scsi3addr[0], 8); 5463 c->Header.tag = cpu_to_le64((c->cmdindex << DIRECT_LOOKUP_SHIFT)); 5464 5465 /* Fill in the request block... */ 5466 5467 c->Request.Timeout = 0; 5468 BUG_ON(cmd->cmd_len > sizeof(c->Request.CDB)); 5469 c->Request.CDBLen = cmd->cmd_len; 5470 memcpy(c->Request.CDB, cmd->cmnd, cmd->cmd_len); 5471 switch (cmd->sc_data_direction) { 5472 case DMA_TO_DEVICE: 5473 c->Request.type_attr_dir = 5474 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_WRITE); 5475 break; 5476 case DMA_FROM_DEVICE: 5477 c->Request.type_attr_dir = 5478 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_READ); 5479 break; 5480 case DMA_NONE: 5481 c->Request.type_attr_dir = 5482 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_NONE); 5483 break; 5484 case DMA_BIDIRECTIONAL: 5485 /* This can happen if a buggy application does a scsi passthru 5486 * and sets both inlen and outlen to non-zero. ( see 5487 * ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() ) 5488 */ 5489 5490 c->Request.type_attr_dir = 5491 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_RSVD); 5492 /* This is technically wrong, and hpsa controllers should 5493 * reject it with CMD_INVALID, which is the most correct 5494 * response, but non-fibre backends appear to let it 5495 * slide by, and give the same results as if this field 5496 * were set correctly. Either way is acceptable for 5497 * our purposes here. 5498 */ 5499 5500 break; 5501 5502 default: 5503 dev_err(&h->pdev->dev, "unknown data direction: %d\n", 5504 cmd->sc_data_direction); 5505 BUG(); 5506 break; 5507 } 5508 5509 if (hpsa_scatter_gather(h, c, cmd) < 0) { /* Fill SG list */ 5510 hpsa_cmd_resolve_and_free(h, c); 5511 return SCSI_MLQUEUE_HOST_BUSY; 5512 } 5513 5514 if (dev->in_reset) { 5515 hpsa_cmd_resolve_and_free(h, c); 5516 return SCSI_MLQUEUE_HOST_BUSY; 5517 } 5518 5519 c->device = dev; 5520 5521 enqueue_cmd_and_start_io(h, c); 5522 /* the cmd'll come back via intr handler in complete_scsi_command() */ 5523 return 0; 5524 } 5525 5526 static void hpsa_cmd_init(struct ctlr_info *h, int index, 5527 struct CommandList *c) 5528 { 5529 dma_addr_t cmd_dma_handle, err_dma_handle; 5530 5531 /* Zero out all of commandlist except the last field, refcount */ 5532 memset(c, 0, offsetof(struct CommandList, refcount)); 5533 c->Header.tag = cpu_to_le64((u64) (index << DIRECT_LOOKUP_SHIFT)); 5534 cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c); 5535 c->err_info = h->errinfo_pool + index; 5536 memset(c->err_info, 0, sizeof(*c->err_info)); 5537 err_dma_handle = h->errinfo_pool_dhandle 5538 + index * sizeof(*c->err_info); 5539 c->cmdindex = index; 5540 c->busaddr = (u32) cmd_dma_handle; 5541 c->ErrDesc.Addr = cpu_to_le64((u64) err_dma_handle); 5542 c->ErrDesc.Len = cpu_to_le32((u32) sizeof(*c->err_info)); 5543 c->h = h; 5544 c->scsi_cmd = SCSI_CMD_IDLE; 5545 } 5546 5547 static void hpsa_preinitialize_commands(struct ctlr_info *h) 5548 { 5549 int i; 5550 5551 for (i = 0; i < h->nr_cmds; i++) { 5552 struct CommandList *c = h->cmd_pool + i; 5553 5554 hpsa_cmd_init(h, i, c); 5555 atomic_set(&c->refcount, 0); 5556 } 5557 } 5558 5559 static inline void hpsa_cmd_partial_init(struct ctlr_info *h, int index, 5560 struct CommandList *c) 5561 { 5562 dma_addr_t cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c); 5563 5564 BUG_ON(c->cmdindex != index); 5565 5566 memset(c->Request.CDB, 0, sizeof(c->Request.CDB)); 5567 memset(c->err_info, 0, sizeof(*c->err_info)); 5568 c->busaddr = (u32) cmd_dma_handle; 5569 } 5570 5571 static int hpsa_ioaccel_submit(struct ctlr_info *h, 5572 struct CommandList *c, struct scsi_cmnd *cmd) 5573 { 5574 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata; 5575 int rc = IO_ACCEL_INELIGIBLE; 5576 5577 if (!dev) 5578 return SCSI_MLQUEUE_HOST_BUSY; 5579 5580 if (dev->in_reset) 5581 return SCSI_MLQUEUE_HOST_BUSY; 5582 5583 if (hpsa_simple_mode) 5584 return IO_ACCEL_INELIGIBLE; 5585 5586 cmd->host_scribble = (unsigned char *) c; 5587 5588 if (dev->offload_enabled) { 5589 hpsa_cmd_init(h, c->cmdindex, c); 5590 c->cmd_type = CMD_SCSI; 5591 c->scsi_cmd = cmd; 5592 c->device = dev; 5593 rc = hpsa_scsi_ioaccel_raid_map(h, c); 5594 if (rc < 0) /* scsi_dma_map failed. */ 5595 rc = SCSI_MLQUEUE_HOST_BUSY; 5596 } else if (dev->hba_ioaccel_enabled) { 5597 hpsa_cmd_init(h, c->cmdindex, c); 5598 c->cmd_type = CMD_SCSI; 5599 c->scsi_cmd = cmd; 5600 c->device = dev; 5601 rc = hpsa_scsi_ioaccel_direct_map(h, c); 5602 if (rc < 0) /* scsi_dma_map failed. */ 5603 rc = SCSI_MLQUEUE_HOST_BUSY; 5604 } 5605 return rc; 5606 } 5607 5608 static void hpsa_command_resubmit_worker(struct work_struct *work) 5609 { 5610 struct scsi_cmnd *cmd; 5611 struct hpsa_scsi_dev_t *dev; 5612 struct CommandList *c = container_of(work, struct CommandList, work); 5613 5614 cmd = c->scsi_cmd; 5615 dev = cmd->device->hostdata; 5616 if (!dev) { 5617 cmd->result = DID_NO_CONNECT << 16; 5618 return hpsa_cmd_free_and_done(c->h, c, cmd); 5619 } 5620 5621 if (dev->in_reset) { 5622 cmd->result = DID_RESET << 16; 5623 return hpsa_cmd_free_and_done(c->h, c, cmd); 5624 } 5625 5626 if (c->cmd_type == CMD_IOACCEL2) { 5627 struct ctlr_info *h = c->h; 5628 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex]; 5629 int rc; 5630 5631 if (c2->error_data.serv_response == 5632 IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL) { 5633 rc = hpsa_ioaccel_submit(h, c, cmd); 5634 if (rc == 0) 5635 return; 5636 if (rc == SCSI_MLQUEUE_HOST_BUSY) { 5637 /* 5638 * If we get here, it means dma mapping failed. 5639 * Try again via scsi mid layer, which will 5640 * then get SCSI_MLQUEUE_HOST_BUSY. 5641 */ 5642 cmd->result = DID_IMM_RETRY << 16; 5643 return hpsa_cmd_free_and_done(h, c, cmd); 5644 } 5645 /* else, fall thru and resubmit down CISS path */ 5646 } 5647 } 5648 hpsa_cmd_partial_init(c->h, c->cmdindex, c); 5649 if (hpsa_ciss_submit(c->h, c, cmd, dev)) { 5650 /* 5651 * If we get here, it means dma mapping failed. Try 5652 * again via scsi mid layer, which will then get 5653 * SCSI_MLQUEUE_HOST_BUSY. 5654 * 5655 * hpsa_ciss_submit will have already freed c 5656 * if it encountered a dma mapping failure. 5657 */ 5658 cmd->result = DID_IMM_RETRY << 16; 5659 cmd->scsi_done(cmd); 5660 } 5661 } 5662 5663 /* Running in struct Scsi_Host->host_lock less mode */ 5664 static int hpsa_scsi_queue_command(struct Scsi_Host *sh, struct scsi_cmnd *cmd) 5665 { 5666 struct ctlr_info *h; 5667 struct hpsa_scsi_dev_t *dev; 5668 struct CommandList *c; 5669 int rc = 0; 5670 5671 /* Get the ptr to our adapter structure out of cmd->host. */ 5672 h = sdev_to_hba(cmd->device); 5673 5674 BUG_ON(cmd->request->tag < 0); 5675 5676 dev = cmd->device->hostdata; 5677 if (!dev) { 5678 cmd->result = DID_NO_CONNECT << 16; 5679 cmd->scsi_done(cmd); 5680 return 0; 5681 } 5682 5683 if (dev->removed) { 5684 cmd->result = DID_NO_CONNECT << 16; 5685 cmd->scsi_done(cmd); 5686 return 0; 5687 } 5688 5689 if (unlikely(lockup_detected(h))) { 5690 cmd->result = DID_NO_CONNECT << 16; 5691 cmd->scsi_done(cmd); 5692 return 0; 5693 } 5694 5695 if (dev->in_reset) 5696 return SCSI_MLQUEUE_DEVICE_BUSY; 5697 5698 c = cmd_tagged_alloc(h, cmd); 5699 if (c == NULL) 5700 return SCSI_MLQUEUE_DEVICE_BUSY; 5701 5702 /* 5703 * This is necessary because the SML doesn't zero out this field during 5704 * error recovery. 5705 */ 5706 cmd->result = 0; 5707 5708 /* 5709 * Call alternate submit routine for I/O accelerated commands. 5710 * Retries always go down the normal I/O path. 5711 */ 5712 if (likely(cmd->retries == 0 && 5713 !blk_rq_is_passthrough(cmd->request) && 5714 h->acciopath_status)) { 5715 rc = hpsa_ioaccel_submit(h, c, cmd); 5716 if (rc == 0) 5717 return 0; 5718 if (rc == SCSI_MLQUEUE_HOST_BUSY) { 5719 hpsa_cmd_resolve_and_free(h, c); 5720 return SCSI_MLQUEUE_HOST_BUSY; 5721 } 5722 } 5723 return hpsa_ciss_submit(h, c, cmd, dev); 5724 } 5725 5726 static void hpsa_scan_complete(struct ctlr_info *h) 5727 { 5728 unsigned long flags; 5729 5730 spin_lock_irqsave(&h->scan_lock, flags); 5731 h->scan_finished = 1; 5732 wake_up(&h->scan_wait_queue); 5733 spin_unlock_irqrestore(&h->scan_lock, flags); 5734 } 5735 5736 static void hpsa_scan_start(struct Scsi_Host *sh) 5737 { 5738 struct ctlr_info *h = shost_to_hba(sh); 5739 unsigned long flags; 5740 5741 /* 5742 * Don't let rescans be initiated on a controller known to be locked 5743 * up. If the controller locks up *during* a rescan, that thread is 5744 * probably hosed, but at least we can prevent new rescan threads from 5745 * piling up on a locked up controller. 5746 */ 5747 if (unlikely(lockup_detected(h))) 5748 return hpsa_scan_complete(h); 5749 5750 /* 5751 * If a scan is already waiting to run, no need to add another 5752 */ 5753 spin_lock_irqsave(&h->scan_lock, flags); 5754 if (h->scan_waiting) { 5755 spin_unlock_irqrestore(&h->scan_lock, flags); 5756 return; 5757 } 5758 5759 spin_unlock_irqrestore(&h->scan_lock, flags); 5760 5761 /* wait until any scan already in progress is finished. */ 5762 while (1) { 5763 spin_lock_irqsave(&h->scan_lock, flags); 5764 if (h->scan_finished) 5765 break; 5766 h->scan_waiting = 1; 5767 spin_unlock_irqrestore(&h->scan_lock, flags); 5768 wait_event(h->scan_wait_queue, h->scan_finished); 5769 /* Note: We don't need to worry about a race between this 5770 * thread and driver unload because the midlayer will 5771 * have incremented the reference count, so unload won't 5772 * happen if we're in here. 5773 */ 5774 } 5775 h->scan_finished = 0; /* mark scan as in progress */ 5776 h->scan_waiting = 0; 5777 spin_unlock_irqrestore(&h->scan_lock, flags); 5778 5779 if (unlikely(lockup_detected(h))) 5780 return hpsa_scan_complete(h); 5781 5782 /* 5783 * Do the scan after a reset completion 5784 */ 5785 spin_lock_irqsave(&h->reset_lock, flags); 5786 if (h->reset_in_progress) { 5787 h->drv_req_rescan = 1; 5788 spin_unlock_irqrestore(&h->reset_lock, flags); 5789 hpsa_scan_complete(h); 5790 return; 5791 } 5792 spin_unlock_irqrestore(&h->reset_lock, flags); 5793 5794 hpsa_update_scsi_devices(h); 5795 5796 hpsa_scan_complete(h); 5797 } 5798 5799 static int hpsa_change_queue_depth(struct scsi_device *sdev, int qdepth) 5800 { 5801 struct hpsa_scsi_dev_t *logical_drive = sdev->hostdata; 5802 5803 if (!logical_drive) 5804 return -ENODEV; 5805 5806 if (qdepth < 1) 5807 qdepth = 1; 5808 else if (qdepth > logical_drive->queue_depth) 5809 qdepth = logical_drive->queue_depth; 5810 5811 return scsi_change_queue_depth(sdev, qdepth); 5812 } 5813 5814 static int hpsa_scan_finished(struct Scsi_Host *sh, 5815 unsigned long elapsed_time) 5816 { 5817 struct ctlr_info *h = shost_to_hba(sh); 5818 unsigned long flags; 5819 int finished; 5820 5821 spin_lock_irqsave(&h->scan_lock, flags); 5822 finished = h->scan_finished; 5823 spin_unlock_irqrestore(&h->scan_lock, flags); 5824 return finished; 5825 } 5826 5827 static int hpsa_scsi_host_alloc(struct ctlr_info *h) 5828 { 5829 struct Scsi_Host *sh; 5830 5831 sh = scsi_host_alloc(&hpsa_driver_template, sizeof(h)); 5832 if (sh == NULL) { 5833 dev_err(&h->pdev->dev, "scsi_host_alloc failed\n"); 5834 return -ENOMEM; 5835 } 5836 5837 sh->io_port = 0; 5838 sh->n_io_port = 0; 5839 sh->this_id = -1; 5840 sh->max_channel = 3; 5841 sh->max_cmd_len = MAX_COMMAND_SIZE; 5842 sh->max_lun = HPSA_MAX_LUN; 5843 sh->max_id = HPSA_MAX_LUN; 5844 sh->can_queue = h->nr_cmds - HPSA_NRESERVED_CMDS; 5845 sh->cmd_per_lun = sh->can_queue; 5846 sh->sg_tablesize = h->maxsgentries; 5847 sh->transportt = hpsa_sas_transport_template; 5848 sh->hostdata[0] = (unsigned long) h; 5849 sh->irq = pci_irq_vector(h->pdev, 0); 5850 sh->unique_id = sh->irq; 5851 5852 h->scsi_host = sh; 5853 return 0; 5854 } 5855 5856 static int hpsa_scsi_add_host(struct ctlr_info *h) 5857 { 5858 int rv; 5859 5860 rv = scsi_add_host(h->scsi_host, &h->pdev->dev); 5861 if (rv) { 5862 dev_err(&h->pdev->dev, "scsi_add_host failed\n"); 5863 return rv; 5864 } 5865 scsi_scan_host(h->scsi_host); 5866 return 0; 5867 } 5868 5869 /* 5870 * The block layer has already gone to the trouble of picking out a unique, 5871 * small-integer tag for this request. We use an offset from that value as 5872 * an index to select our command block. (The offset allows us to reserve the 5873 * low-numbered entries for our own uses.) 5874 */ 5875 static int hpsa_get_cmd_index(struct scsi_cmnd *scmd) 5876 { 5877 int idx = scmd->request->tag; 5878 5879 if (idx < 0) 5880 return idx; 5881 5882 /* Offset to leave space for internal cmds. */ 5883 return idx += HPSA_NRESERVED_CMDS; 5884 } 5885 5886 /* 5887 * Send a TEST_UNIT_READY command to the specified LUN using the specified 5888 * reply queue; returns zero if the unit is ready, and non-zero otherwise. 5889 */ 5890 static int hpsa_send_test_unit_ready(struct ctlr_info *h, 5891 struct CommandList *c, unsigned char lunaddr[], 5892 int reply_queue) 5893 { 5894 int rc; 5895 5896 /* Send the Test Unit Ready, fill_cmd can't fail, no mapping */ 5897 (void) fill_cmd(c, TEST_UNIT_READY, h, 5898 NULL, 0, 0, lunaddr, TYPE_CMD); 5899 rc = hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT); 5900 if (rc) 5901 return rc; 5902 /* no unmap needed here because no data xfer. */ 5903 5904 /* Check if the unit is already ready. */ 5905 if (c->err_info->CommandStatus == CMD_SUCCESS) 5906 return 0; 5907 5908 /* 5909 * The first command sent after reset will receive "unit attention" to 5910 * indicate that the LUN has been reset...this is actually what we're 5911 * looking for (but, success is good too). 5912 */ 5913 if (c->err_info->CommandStatus == CMD_TARGET_STATUS && 5914 c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION && 5915 (c->err_info->SenseInfo[2] == NO_SENSE || 5916 c->err_info->SenseInfo[2] == UNIT_ATTENTION)) 5917 return 0; 5918 5919 return 1; 5920 } 5921 5922 /* 5923 * Wait for a TEST_UNIT_READY command to complete, retrying as necessary; 5924 * returns zero when the unit is ready, and non-zero when giving up. 5925 */ 5926 static int hpsa_wait_for_test_unit_ready(struct ctlr_info *h, 5927 struct CommandList *c, 5928 unsigned char lunaddr[], int reply_queue) 5929 { 5930 int rc; 5931 int count = 0; 5932 int waittime = 1; /* seconds */ 5933 5934 /* Send test unit ready until device ready, or give up. */ 5935 for (count = 0; count < HPSA_TUR_RETRY_LIMIT; count++) { 5936 5937 /* 5938 * Wait for a bit. do this first, because if we send 5939 * the TUR right away, the reset will just abort it. 5940 */ 5941 msleep(1000 * waittime); 5942 5943 rc = hpsa_send_test_unit_ready(h, c, lunaddr, reply_queue); 5944 if (!rc) 5945 break; 5946 5947 /* Increase wait time with each try, up to a point. */ 5948 if (waittime < HPSA_MAX_WAIT_INTERVAL_SECS) 5949 waittime *= 2; 5950 5951 dev_warn(&h->pdev->dev, 5952 "waiting %d secs for device to become ready.\n", 5953 waittime); 5954 } 5955 5956 return rc; 5957 } 5958 5959 static int wait_for_device_to_become_ready(struct ctlr_info *h, 5960 unsigned char lunaddr[], 5961 int reply_queue) 5962 { 5963 int first_queue; 5964 int last_queue; 5965 int rq; 5966 int rc = 0; 5967 struct CommandList *c; 5968 5969 c = cmd_alloc(h); 5970 5971 /* 5972 * If no specific reply queue was requested, then send the TUR 5973 * repeatedly, requesting a reply on each reply queue; otherwise execute 5974 * the loop exactly once using only the specified queue. 5975 */ 5976 if (reply_queue == DEFAULT_REPLY_QUEUE) { 5977 first_queue = 0; 5978 last_queue = h->nreply_queues - 1; 5979 } else { 5980 first_queue = reply_queue; 5981 last_queue = reply_queue; 5982 } 5983 5984 for (rq = first_queue; rq <= last_queue; rq++) { 5985 rc = hpsa_wait_for_test_unit_ready(h, c, lunaddr, rq); 5986 if (rc) 5987 break; 5988 } 5989 5990 if (rc) 5991 dev_warn(&h->pdev->dev, "giving up on device.\n"); 5992 else 5993 dev_warn(&h->pdev->dev, "device is ready.\n"); 5994 5995 cmd_free(h, c); 5996 return rc; 5997 } 5998 5999 /* Need at least one of these error handlers to keep ../scsi/hosts.c from 6000 * complaining. Doing a host- or bus-reset can't do anything good here. 6001 */ 6002 static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd) 6003 { 6004 int rc = SUCCESS; 6005 int i; 6006 struct ctlr_info *h; 6007 struct hpsa_scsi_dev_t *dev = NULL; 6008 u8 reset_type; 6009 char msg[48]; 6010 unsigned long flags; 6011 6012 /* find the controller to which the command to be aborted was sent */ 6013 h = sdev_to_hba(scsicmd->device); 6014 if (h == NULL) /* paranoia */ 6015 return FAILED; 6016 6017 spin_lock_irqsave(&h->reset_lock, flags); 6018 h->reset_in_progress = 1; 6019 spin_unlock_irqrestore(&h->reset_lock, flags); 6020 6021 if (lockup_detected(h)) { 6022 rc = FAILED; 6023 goto return_reset_status; 6024 } 6025 6026 dev = scsicmd->device->hostdata; 6027 if (!dev) { 6028 dev_err(&h->pdev->dev, "%s: device lookup failed\n", __func__); 6029 rc = FAILED; 6030 goto return_reset_status; 6031 } 6032 6033 if (dev->devtype == TYPE_ENCLOSURE) { 6034 rc = SUCCESS; 6035 goto return_reset_status; 6036 } 6037 6038 /* if controller locked up, we can guarantee command won't complete */ 6039 if (lockup_detected(h)) { 6040 snprintf(msg, sizeof(msg), 6041 "cmd %d RESET FAILED, lockup detected", 6042 hpsa_get_cmd_index(scsicmd)); 6043 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg); 6044 rc = FAILED; 6045 goto return_reset_status; 6046 } 6047 6048 /* this reset request might be the result of a lockup; check */ 6049 if (detect_controller_lockup(h)) { 6050 snprintf(msg, sizeof(msg), 6051 "cmd %d RESET FAILED, new lockup detected", 6052 hpsa_get_cmd_index(scsicmd)); 6053 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg); 6054 rc = FAILED; 6055 goto return_reset_status; 6056 } 6057 6058 /* Do not attempt on controller */ 6059 if (is_hba_lunid(dev->scsi3addr)) { 6060 rc = SUCCESS; 6061 goto return_reset_status; 6062 } 6063 6064 if (is_logical_dev_addr_mode(dev->scsi3addr)) 6065 reset_type = HPSA_DEVICE_RESET_MSG; 6066 else 6067 reset_type = HPSA_PHYS_TARGET_RESET; 6068 6069 sprintf(msg, "resetting %s", 6070 reset_type == HPSA_DEVICE_RESET_MSG ? "logical " : "physical "); 6071 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg); 6072 6073 /* 6074 * wait to see if any commands will complete before sending reset 6075 */ 6076 dev->in_reset = true; /* block any new cmds from OS for this device */ 6077 for (i = 0; i < 10; i++) { 6078 if (atomic_read(&dev->commands_outstanding) > 0) 6079 msleep(1000); 6080 else 6081 break; 6082 } 6083 6084 /* send a reset to the SCSI LUN which the command was sent to */ 6085 rc = hpsa_do_reset(h, dev, reset_type, DEFAULT_REPLY_QUEUE); 6086 if (rc == 0) 6087 rc = SUCCESS; 6088 else 6089 rc = FAILED; 6090 6091 sprintf(msg, "reset %s %s", 6092 reset_type == HPSA_DEVICE_RESET_MSG ? "logical " : "physical ", 6093 rc == SUCCESS ? "completed successfully" : "failed"); 6094 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg); 6095 6096 return_reset_status: 6097 spin_lock_irqsave(&h->reset_lock, flags); 6098 h->reset_in_progress = 0; 6099 if (dev) 6100 dev->in_reset = false; 6101 spin_unlock_irqrestore(&h->reset_lock, flags); 6102 return rc; 6103 } 6104 6105 /* 6106 * For operations with an associated SCSI command, a command block is allocated 6107 * at init, and managed by cmd_tagged_alloc() and cmd_tagged_free() using the 6108 * block request tag as an index into a table of entries. cmd_tagged_free() is 6109 * the complement, although cmd_free() may be called instead. 6110 */ 6111 static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h, 6112 struct scsi_cmnd *scmd) 6113 { 6114 int idx = hpsa_get_cmd_index(scmd); 6115 struct CommandList *c = h->cmd_pool + idx; 6116 6117 if (idx < HPSA_NRESERVED_CMDS || idx >= h->nr_cmds) { 6118 dev_err(&h->pdev->dev, "Bad block tag: %d not in [%d..%d]\n", 6119 idx, HPSA_NRESERVED_CMDS, h->nr_cmds - 1); 6120 /* The index value comes from the block layer, so if it's out of 6121 * bounds, it's probably not our bug. 6122 */ 6123 BUG(); 6124 } 6125 6126 if (unlikely(!hpsa_is_cmd_idle(c))) { 6127 /* 6128 * We expect that the SCSI layer will hand us a unique tag 6129 * value. Thus, there should never be a collision here between 6130 * two requests...because if the selected command isn't idle 6131 * then someone is going to be very disappointed. 6132 */ 6133 if (idx != h->last_collision_tag) { /* Print once per tag */ 6134 dev_warn(&h->pdev->dev, 6135 "%s: tag collision (tag=%d)\n", __func__, idx); 6136 if (scmd) 6137 scsi_print_command(scmd); 6138 h->last_collision_tag = idx; 6139 } 6140 return NULL; 6141 } 6142 6143 atomic_inc(&c->refcount); 6144 6145 hpsa_cmd_partial_init(h, idx, c); 6146 return c; 6147 } 6148 6149 static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c) 6150 { 6151 /* 6152 * Release our reference to the block. We don't need to do anything 6153 * else to free it, because it is accessed by index. 6154 */ 6155 (void)atomic_dec(&c->refcount); 6156 } 6157 6158 /* 6159 * For operations that cannot sleep, a command block is allocated at init, 6160 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track 6161 * which ones are free or in use. Lock must be held when calling this. 6162 * cmd_free() is the complement. 6163 * This function never gives up and returns NULL. If it hangs, 6164 * another thread must call cmd_free() to free some tags. 6165 */ 6166 6167 static struct CommandList *cmd_alloc(struct ctlr_info *h) 6168 { 6169 struct CommandList *c; 6170 int refcount, i; 6171 int offset = 0; 6172 6173 /* 6174 * There is some *extremely* small but non-zero chance that that 6175 * multiple threads could get in here, and one thread could 6176 * be scanning through the list of bits looking for a free 6177 * one, but the free ones are always behind him, and other 6178 * threads sneak in behind him and eat them before he can 6179 * get to them, so that while there is always a free one, a 6180 * very unlucky thread might be starved anyway, never able to 6181 * beat the other threads. In reality, this happens so 6182 * infrequently as to be indistinguishable from never. 6183 * 6184 * Note that we start allocating commands before the SCSI host structure 6185 * is initialized. Since the search starts at bit zero, this 6186 * all works, since we have at least one command structure available; 6187 * however, it means that the structures with the low indexes have to be 6188 * reserved for driver-initiated requests, while requests from the block 6189 * layer will use the higher indexes. 6190 */ 6191 6192 for (;;) { 6193 i = find_next_zero_bit(h->cmd_pool_bits, 6194 HPSA_NRESERVED_CMDS, 6195 offset); 6196 if (unlikely(i >= HPSA_NRESERVED_CMDS)) { 6197 offset = 0; 6198 continue; 6199 } 6200 c = h->cmd_pool + i; 6201 refcount = atomic_inc_return(&c->refcount); 6202 if (unlikely(refcount > 1)) { 6203 cmd_free(h, c); /* already in use */ 6204 offset = (i + 1) % HPSA_NRESERVED_CMDS; 6205 continue; 6206 } 6207 set_bit(i & (BITS_PER_LONG - 1), 6208 h->cmd_pool_bits + (i / BITS_PER_LONG)); 6209 break; /* it's ours now. */ 6210 } 6211 hpsa_cmd_partial_init(h, i, c); 6212 c->device = NULL; 6213 return c; 6214 } 6215 6216 /* 6217 * This is the complementary operation to cmd_alloc(). Note, however, in some 6218 * corner cases it may also be used to free blocks allocated by 6219 * cmd_tagged_alloc() in which case the ref-count decrement does the trick and 6220 * the clear-bit is harmless. 6221 */ 6222 static void cmd_free(struct ctlr_info *h, struct CommandList *c) 6223 { 6224 if (atomic_dec_and_test(&c->refcount)) { 6225 int i; 6226 6227 i = c - h->cmd_pool; 6228 clear_bit(i & (BITS_PER_LONG - 1), 6229 h->cmd_pool_bits + (i / BITS_PER_LONG)); 6230 } 6231 } 6232 6233 #ifdef CONFIG_COMPAT 6234 6235 static int hpsa_ioctl32_passthru(struct scsi_device *dev, unsigned int cmd, 6236 void __user *arg) 6237 { 6238 struct ctlr_info *h = sdev_to_hba(dev); 6239 IOCTL32_Command_struct __user *arg32 = arg; 6240 IOCTL_Command_struct arg64; 6241 int err; 6242 u32 cp; 6243 6244 if (!arg) 6245 return -EINVAL; 6246 6247 memset(&arg64, 0, sizeof(arg64)); 6248 if (copy_from_user(&arg64, arg32, offsetof(IOCTL_Command_struct, buf))) 6249 return -EFAULT; 6250 if (get_user(cp, &arg32->buf)) 6251 return -EFAULT; 6252 arg64.buf = compat_ptr(cp); 6253 6254 if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0) 6255 return -EAGAIN; 6256 err = hpsa_passthru_ioctl(h, &arg64); 6257 atomic_inc(&h->passthru_cmds_avail); 6258 if (err) 6259 return err; 6260 if (copy_to_user(&arg32->error_info, &arg64.error_info, 6261 sizeof(arg32->error_info))) 6262 return -EFAULT; 6263 return 0; 6264 } 6265 6266 static int hpsa_ioctl32_big_passthru(struct scsi_device *dev, 6267 unsigned int cmd, void __user *arg) 6268 { 6269 struct ctlr_info *h = sdev_to_hba(dev); 6270 BIG_IOCTL32_Command_struct __user *arg32 = arg; 6271 BIG_IOCTL_Command_struct arg64; 6272 int err; 6273 u32 cp; 6274 6275 if (!arg) 6276 return -EINVAL; 6277 memset(&arg64, 0, sizeof(arg64)); 6278 if (copy_from_user(&arg64, arg32, 6279 offsetof(BIG_IOCTL32_Command_struct, buf))) 6280 return -EFAULT; 6281 if (get_user(cp, &arg32->buf)) 6282 return -EFAULT; 6283 arg64.buf = compat_ptr(cp); 6284 6285 if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0) 6286 return -EAGAIN; 6287 err = hpsa_big_passthru_ioctl(h, &arg64); 6288 atomic_inc(&h->passthru_cmds_avail); 6289 if (err) 6290 return err; 6291 if (copy_to_user(&arg32->error_info, &arg64.error_info, 6292 sizeof(arg32->error_info))) 6293 return -EFAULT; 6294 return 0; 6295 } 6296 6297 static int hpsa_compat_ioctl(struct scsi_device *dev, unsigned int cmd, 6298 void __user *arg) 6299 { 6300 switch (cmd) { 6301 case CCISS_GETPCIINFO: 6302 case CCISS_GETINTINFO: 6303 case CCISS_SETINTINFO: 6304 case CCISS_GETNODENAME: 6305 case CCISS_SETNODENAME: 6306 case CCISS_GETHEARTBEAT: 6307 case CCISS_GETBUSTYPES: 6308 case CCISS_GETFIRMVER: 6309 case CCISS_GETDRIVVER: 6310 case CCISS_REVALIDVOLS: 6311 case CCISS_DEREGDISK: 6312 case CCISS_REGNEWDISK: 6313 case CCISS_REGNEWD: 6314 case CCISS_RESCANDISK: 6315 case CCISS_GETLUNINFO: 6316 return hpsa_ioctl(dev, cmd, arg); 6317 6318 case CCISS_PASSTHRU32: 6319 return hpsa_ioctl32_passthru(dev, cmd, arg); 6320 case CCISS_BIG_PASSTHRU32: 6321 return hpsa_ioctl32_big_passthru(dev, cmd, arg); 6322 6323 default: 6324 return -ENOIOCTLCMD; 6325 } 6326 } 6327 #endif 6328 6329 static int hpsa_getpciinfo_ioctl(struct ctlr_info *h, void __user *argp) 6330 { 6331 struct hpsa_pci_info pciinfo; 6332 6333 if (!argp) 6334 return -EINVAL; 6335 pciinfo.domain = pci_domain_nr(h->pdev->bus); 6336 pciinfo.bus = h->pdev->bus->number; 6337 pciinfo.dev_fn = h->pdev->devfn; 6338 pciinfo.board_id = h->board_id; 6339 if (copy_to_user(argp, &pciinfo, sizeof(pciinfo))) 6340 return -EFAULT; 6341 return 0; 6342 } 6343 6344 static int hpsa_getdrivver_ioctl(struct ctlr_info *h, void __user *argp) 6345 { 6346 DriverVer_type DriverVer; 6347 unsigned char vmaj, vmin, vsubmin; 6348 int rc; 6349 6350 rc = sscanf(HPSA_DRIVER_VERSION, "%hhu.%hhu.%hhu", 6351 &vmaj, &vmin, &vsubmin); 6352 if (rc != 3) { 6353 dev_info(&h->pdev->dev, "driver version string '%s' " 6354 "unrecognized.", HPSA_DRIVER_VERSION); 6355 vmaj = 0; 6356 vmin = 0; 6357 vsubmin = 0; 6358 } 6359 DriverVer = (vmaj << 16) | (vmin << 8) | vsubmin; 6360 if (!argp) 6361 return -EINVAL; 6362 if (copy_to_user(argp, &DriverVer, sizeof(DriverVer_type))) 6363 return -EFAULT; 6364 return 0; 6365 } 6366 6367 static int hpsa_passthru_ioctl(struct ctlr_info *h, 6368 IOCTL_Command_struct *iocommand) 6369 { 6370 struct CommandList *c; 6371 char *buff = NULL; 6372 u64 temp64; 6373 int rc = 0; 6374 6375 if (!capable(CAP_SYS_RAWIO)) 6376 return -EPERM; 6377 if ((iocommand->buf_size < 1) && 6378 (iocommand->Request.Type.Direction != XFER_NONE)) { 6379 return -EINVAL; 6380 } 6381 if (iocommand->buf_size > 0) { 6382 buff = kmalloc(iocommand->buf_size, GFP_KERNEL); 6383 if (buff == NULL) 6384 return -ENOMEM; 6385 if (iocommand->Request.Type.Direction & XFER_WRITE) { 6386 /* Copy the data into the buffer we created */ 6387 if (copy_from_user(buff, iocommand->buf, 6388 iocommand->buf_size)) { 6389 rc = -EFAULT; 6390 goto out_kfree; 6391 } 6392 } else { 6393 memset(buff, 0, iocommand->buf_size); 6394 } 6395 } 6396 c = cmd_alloc(h); 6397 6398 /* Fill in the command type */ 6399 c->cmd_type = CMD_IOCTL_PEND; 6400 c->scsi_cmd = SCSI_CMD_BUSY; 6401 /* Fill in Command Header */ 6402 c->Header.ReplyQueue = 0; /* unused in simple mode */ 6403 if (iocommand->buf_size > 0) { /* buffer to fill */ 6404 c->Header.SGList = 1; 6405 c->Header.SGTotal = cpu_to_le16(1); 6406 } else { /* no buffers to fill */ 6407 c->Header.SGList = 0; 6408 c->Header.SGTotal = cpu_to_le16(0); 6409 } 6410 memcpy(&c->Header.LUN, &iocommand->LUN_info, sizeof(c->Header.LUN)); 6411 6412 /* Fill in Request block */ 6413 memcpy(&c->Request, &iocommand->Request, 6414 sizeof(c->Request)); 6415 6416 /* Fill in the scatter gather information */ 6417 if (iocommand->buf_size > 0) { 6418 temp64 = dma_map_single(&h->pdev->dev, buff, 6419 iocommand->buf_size, DMA_BIDIRECTIONAL); 6420 if (dma_mapping_error(&h->pdev->dev, (dma_addr_t) temp64)) { 6421 c->SG[0].Addr = cpu_to_le64(0); 6422 c->SG[0].Len = cpu_to_le32(0); 6423 rc = -ENOMEM; 6424 goto out; 6425 } 6426 c->SG[0].Addr = cpu_to_le64(temp64); 6427 c->SG[0].Len = cpu_to_le32(iocommand->buf_size); 6428 c->SG[0].Ext = cpu_to_le32(HPSA_SG_LAST); /* not chaining */ 6429 } 6430 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, 6431 NO_TIMEOUT); 6432 if (iocommand->buf_size > 0) 6433 hpsa_pci_unmap(h->pdev, c, 1, DMA_BIDIRECTIONAL); 6434 check_ioctl_unit_attention(h, c); 6435 if (rc) { 6436 rc = -EIO; 6437 goto out; 6438 } 6439 6440 /* Copy the error information out */ 6441 memcpy(&iocommand->error_info, c->err_info, 6442 sizeof(iocommand->error_info)); 6443 if ((iocommand->Request.Type.Direction & XFER_READ) && 6444 iocommand->buf_size > 0) { 6445 /* Copy the data out of the buffer we created */ 6446 if (copy_to_user(iocommand->buf, buff, iocommand->buf_size)) { 6447 rc = -EFAULT; 6448 goto out; 6449 } 6450 } 6451 out: 6452 cmd_free(h, c); 6453 out_kfree: 6454 kfree(buff); 6455 return rc; 6456 } 6457 6458 static int hpsa_big_passthru_ioctl(struct ctlr_info *h, 6459 BIG_IOCTL_Command_struct *ioc) 6460 { 6461 struct CommandList *c; 6462 unsigned char **buff = NULL; 6463 int *buff_size = NULL; 6464 u64 temp64; 6465 BYTE sg_used = 0; 6466 int status = 0; 6467 u32 left; 6468 u32 sz; 6469 BYTE __user *data_ptr; 6470 6471 if (!capable(CAP_SYS_RAWIO)) 6472 return -EPERM; 6473 6474 if ((ioc->buf_size < 1) && 6475 (ioc->Request.Type.Direction != XFER_NONE)) 6476 return -EINVAL; 6477 /* Check kmalloc limits using all SGs */ 6478 if (ioc->malloc_size > MAX_KMALLOC_SIZE) 6479 return -EINVAL; 6480 if (ioc->buf_size > ioc->malloc_size * SG_ENTRIES_IN_CMD) 6481 return -EINVAL; 6482 buff = kcalloc(SG_ENTRIES_IN_CMD, sizeof(char *), GFP_KERNEL); 6483 if (!buff) { 6484 status = -ENOMEM; 6485 goto cleanup1; 6486 } 6487 buff_size = kmalloc_array(SG_ENTRIES_IN_CMD, sizeof(int), GFP_KERNEL); 6488 if (!buff_size) { 6489 status = -ENOMEM; 6490 goto cleanup1; 6491 } 6492 left = ioc->buf_size; 6493 data_ptr = ioc->buf; 6494 while (left) { 6495 sz = (left > ioc->malloc_size) ? ioc->malloc_size : left; 6496 buff_size[sg_used] = sz; 6497 buff[sg_used] = kmalloc(sz, GFP_KERNEL); 6498 if (buff[sg_used] == NULL) { 6499 status = -ENOMEM; 6500 goto cleanup1; 6501 } 6502 if (ioc->Request.Type.Direction & XFER_WRITE) { 6503 if (copy_from_user(buff[sg_used], data_ptr, sz)) { 6504 status = -EFAULT; 6505 goto cleanup1; 6506 } 6507 } else 6508 memset(buff[sg_used], 0, sz); 6509 left -= sz; 6510 data_ptr += sz; 6511 sg_used++; 6512 } 6513 c = cmd_alloc(h); 6514 6515 c->cmd_type = CMD_IOCTL_PEND; 6516 c->scsi_cmd = SCSI_CMD_BUSY; 6517 c->Header.ReplyQueue = 0; 6518 c->Header.SGList = (u8) sg_used; 6519 c->Header.SGTotal = cpu_to_le16(sg_used); 6520 memcpy(&c->Header.LUN, &ioc->LUN_info, sizeof(c->Header.LUN)); 6521 memcpy(&c->Request, &ioc->Request, sizeof(c->Request)); 6522 if (ioc->buf_size > 0) { 6523 int i; 6524 for (i = 0; i < sg_used; i++) { 6525 temp64 = dma_map_single(&h->pdev->dev, buff[i], 6526 buff_size[i], DMA_BIDIRECTIONAL); 6527 if (dma_mapping_error(&h->pdev->dev, 6528 (dma_addr_t) temp64)) { 6529 c->SG[i].Addr = cpu_to_le64(0); 6530 c->SG[i].Len = cpu_to_le32(0); 6531 hpsa_pci_unmap(h->pdev, c, i, 6532 DMA_BIDIRECTIONAL); 6533 status = -ENOMEM; 6534 goto cleanup0; 6535 } 6536 c->SG[i].Addr = cpu_to_le64(temp64); 6537 c->SG[i].Len = cpu_to_le32(buff_size[i]); 6538 c->SG[i].Ext = cpu_to_le32(0); 6539 } 6540 c->SG[--i].Ext = cpu_to_le32(HPSA_SG_LAST); 6541 } 6542 status = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, 6543 NO_TIMEOUT); 6544 if (sg_used) 6545 hpsa_pci_unmap(h->pdev, c, sg_used, DMA_BIDIRECTIONAL); 6546 check_ioctl_unit_attention(h, c); 6547 if (status) { 6548 status = -EIO; 6549 goto cleanup0; 6550 } 6551 6552 /* Copy the error information out */ 6553 memcpy(&ioc->error_info, c->err_info, sizeof(ioc->error_info)); 6554 if ((ioc->Request.Type.Direction & XFER_READ) && ioc->buf_size > 0) { 6555 int i; 6556 6557 /* Copy the data out of the buffer we created */ 6558 BYTE __user *ptr = ioc->buf; 6559 for (i = 0; i < sg_used; i++) { 6560 if (copy_to_user(ptr, buff[i], buff_size[i])) { 6561 status = -EFAULT; 6562 goto cleanup0; 6563 } 6564 ptr += buff_size[i]; 6565 } 6566 } 6567 status = 0; 6568 cleanup0: 6569 cmd_free(h, c); 6570 cleanup1: 6571 if (buff) { 6572 int i; 6573 6574 for (i = 0; i < sg_used; i++) 6575 kfree(buff[i]); 6576 kfree(buff); 6577 } 6578 kfree(buff_size); 6579 return status; 6580 } 6581 6582 static void check_ioctl_unit_attention(struct ctlr_info *h, 6583 struct CommandList *c) 6584 { 6585 if (c->err_info->CommandStatus == CMD_TARGET_STATUS && 6586 c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) 6587 (void) check_for_unit_attention(h, c); 6588 } 6589 6590 /* 6591 * ioctl 6592 */ 6593 static int hpsa_ioctl(struct scsi_device *dev, unsigned int cmd, 6594 void __user *argp) 6595 { 6596 struct ctlr_info *h = sdev_to_hba(dev); 6597 int rc; 6598 6599 switch (cmd) { 6600 case CCISS_DEREGDISK: 6601 case CCISS_REGNEWDISK: 6602 case CCISS_REGNEWD: 6603 hpsa_scan_start(h->scsi_host); 6604 return 0; 6605 case CCISS_GETPCIINFO: 6606 return hpsa_getpciinfo_ioctl(h, argp); 6607 case CCISS_GETDRIVVER: 6608 return hpsa_getdrivver_ioctl(h, argp); 6609 case CCISS_PASSTHRU: { 6610 IOCTL_Command_struct iocommand; 6611 6612 if (!argp) 6613 return -EINVAL; 6614 if (copy_from_user(&iocommand, argp, sizeof(iocommand))) 6615 return -EFAULT; 6616 if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0) 6617 return -EAGAIN; 6618 rc = hpsa_passthru_ioctl(h, &iocommand); 6619 atomic_inc(&h->passthru_cmds_avail); 6620 if (!rc && copy_to_user(argp, &iocommand, sizeof(iocommand))) 6621 rc = -EFAULT; 6622 return rc; 6623 } 6624 case CCISS_BIG_PASSTHRU: { 6625 BIG_IOCTL_Command_struct ioc; 6626 if (!argp) 6627 return -EINVAL; 6628 if (copy_from_user(&ioc, argp, sizeof(ioc))) 6629 return -EFAULT; 6630 if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0) 6631 return -EAGAIN; 6632 rc = hpsa_big_passthru_ioctl(h, &ioc); 6633 atomic_inc(&h->passthru_cmds_avail); 6634 if (!rc && copy_to_user(argp, &ioc, sizeof(ioc))) 6635 rc = -EFAULT; 6636 return rc; 6637 } 6638 default: 6639 return -ENOTTY; 6640 } 6641 } 6642 6643 static void hpsa_send_host_reset(struct ctlr_info *h, u8 reset_type) 6644 { 6645 struct CommandList *c; 6646 6647 c = cmd_alloc(h); 6648 6649 /* fill_cmd can't fail here, no data buffer to map */ 6650 (void) fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0, 6651 RAID_CTLR_LUNID, TYPE_MSG); 6652 c->Request.CDB[1] = reset_type; /* fill_cmd defaults to target reset */ 6653 c->waiting = NULL; 6654 enqueue_cmd_and_start_io(h, c); 6655 /* Don't wait for completion, the reset won't complete. Don't free 6656 * the command either. This is the last command we will send before 6657 * re-initializing everything, so it doesn't matter and won't leak. 6658 */ 6659 return; 6660 } 6661 6662 static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h, 6663 void *buff, size_t size, u16 page_code, unsigned char *scsi3addr, 6664 int cmd_type) 6665 { 6666 enum dma_data_direction dir = DMA_NONE; 6667 6668 c->cmd_type = CMD_IOCTL_PEND; 6669 c->scsi_cmd = SCSI_CMD_BUSY; 6670 c->Header.ReplyQueue = 0; 6671 if (buff != NULL && size > 0) { 6672 c->Header.SGList = 1; 6673 c->Header.SGTotal = cpu_to_le16(1); 6674 } else { 6675 c->Header.SGList = 0; 6676 c->Header.SGTotal = cpu_to_le16(0); 6677 } 6678 memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8); 6679 6680 if (cmd_type == TYPE_CMD) { 6681 switch (cmd) { 6682 case HPSA_INQUIRY: 6683 /* are we trying to read a vital product page */ 6684 if (page_code & VPD_PAGE) { 6685 c->Request.CDB[1] = 0x01; 6686 c->Request.CDB[2] = (page_code & 0xff); 6687 } 6688 c->Request.CDBLen = 6; 6689 c->Request.type_attr_dir = 6690 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ); 6691 c->Request.Timeout = 0; 6692 c->Request.CDB[0] = HPSA_INQUIRY; 6693 c->Request.CDB[4] = size & 0xFF; 6694 break; 6695 case RECEIVE_DIAGNOSTIC: 6696 c->Request.CDBLen = 6; 6697 c->Request.type_attr_dir = 6698 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ); 6699 c->Request.Timeout = 0; 6700 c->Request.CDB[0] = cmd; 6701 c->Request.CDB[1] = 1; 6702 c->Request.CDB[2] = 1; 6703 c->Request.CDB[3] = (size >> 8) & 0xFF; 6704 c->Request.CDB[4] = size & 0xFF; 6705 break; 6706 case HPSA_REPORT_LOG: 6707 case HPSA_REPORT_PHYS: 6708 /* Talking to controller so It's a physical command 6709 mode = 00 target = 0. Nothing to write. 6710 */ 6711 c->Request.CDBLen = 12; 6712 c->Request.type_attr_dir = 6713 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ); 6714 c->Request.Timeout = 0; 6715 c->Request.CDB[0] = cmd; 6716 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */ 6717 c->Request.CDB[7] = (size >> 16) & 0xFF; 6718 c->Request.CDB[8] = (size >> 8) & 0xFF; 6719 c->Request.CDB[9] = size & 0xFF; 6720 break; 6721 case BMIC_SENSE_DIAG_OPTIONS: 6722 c->Request.CDBLen = 16; 6723 c->Request.type_attr_dir = 6724 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ); 6725 c->Request.Timeout = 0; 6726 /* Spec says this should be BMIC_WRITE */ 6727 c->Request.CDB[0] = BMIC_READ; 6728 c->Request.CDB[6] = BMIC_SENSE_DIAG_OPTIONS; 6729 break; 6730 case BMIC_SET_DIAG_OPTIONS: 6731 c->Request.CDBLen = 16; 6732 c->Request.type_attr_dir = 6733 TYPE_ATTR_DIR(cmd_type, 6734 ATTR_SIMPLE, XFER_WRITE); 6735 c->Request.Timeout = 0; 6736 c->Request.CDB[0] = BMIC_WRITE; 6737 c->Request.CDB[6] = BMIC_SET_DIAG_OPTIONS; 6738 break; 6739 case HPSA_CACHE_FLUSH: 6740 c->Request.CDBLen = 12; 6741 c->Request.type_attr_dir = 6742 TYPE_ATTR_DIR(cmd_type, 6743 ATTR_SIMPLE, XFER_WRITE); 6744 c->Request.Timeout = 0; 6745 c->Request.CDB[0] = BMIC_WRITE; 6746 c->Request.CDB[6] = BMIC_CACHE_FLUSH; 6747 c->Request.CDB[7] = (size >> 8) & 0xFF; 6748 c->Request.CDB[8] = size & 0xFF; 6749 break; 6750 case TEST_UNIT_READY: 6751 c->Request.CDBLen = 6; 6752 c->Request.type_attr_dir = 6753 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE); 6754 c->Request.Timeout = 0; 6755 break; 6756 case HPSA_GET_RAID_MAP: 6757 c->Request.CDBLen = 12; 6758 c->Request.type_attr_dir = 6759 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ); 6760 c->Request.Timeout = 0; 6761 c->Request.CDB[0] = HPSA_CISS_READ; 6762 c->Request.CDB[1] = cmd; 6763 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */ 6764 c->Request.CDB[7] = (size >> 16) & 0xFF; 6765 c->Request.CDB[8] = (size >> 8) & 0xFF; 6766 c->Request.CDB[9] = size & 0xFF; 6767 break; 6768 case BMIC_SENSE_CONTROLLER_PARAMETERS: 6769 c->Request.CDBLen = 10; 6770 c->Request.type_attr_dir = 6771 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ); 6772 c->Request.Timeout = 0; 6773 c->Request.CDB[0] = BMIC_READ; 6774 c->Request.CDB[6] = BMIC_SENSE_CONTROLLER_PARAMETERS; 6775 c->Request.CDB[7] = (size >> 16) & 0xFF; 6776 c->Request.CDB[8] = (size >> 8) & 0xFF; 6777 break; 6778 case BMIC_IDENTIFY_PHYSICAL_DEVICE: 6779 c->Request.CDBLen = 10; 6780 c->Request.type_attr_dir = 6781 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ); 6782 c->Request.Timeout = 0; 6783 c->Request.CDB[0] = BMIC_READ; 6784 c->Request.CDB[6] = BMIC_IDENTIFY_PHYSICAL_DEVICE; 6785 c->Request.CDB[7] = (size >> 16) & 0xFF; 6786 c->Request.CDB[8] = (size >> 8) & 0XFF; 6787 break; 6788 case BMIC_SENSE_SUBSYSTEM_INFORMATION: 6789 c->Request.CDBLen = 10; 6790 c->Request.type_attr_dir = 6791 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ); 6792 c->Request.Timeout = 0; 6793 c->Request.CDB[0] = BMIC_READ; 6794 c->Request.CDB[6] = BMIC_SENSE_SUBSYSTEM_INFORMATION; 6795 c->Request.CDB[7] = (size >> 16) & 0xFF; 6796 c->Request.CDB[8] = (size >> 8) & 0XFF; 6797 break; 6798 case BMIC_SENSE_STORAGE_BOX_PARAMS: 6799 c->Request.CDBLen = 10; 6800 c->Request.type_attr_dir = 6801 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ); 6802 c->Request.Timeout = 0; 6803 c->Request.CDB[0] = BMIC_READ; 6804 c->Request.CDB[6] = BMIC_SENSE_STORAGE_BOX_PARAMS; 6805 c->Request.CDB[7] = (size >> 16) & 0xFF; 6806 c->Request.CDB[8] = (size >> 8) & 0XFF; 6807 break; 6808 case BMIC_IDENTIFY_CONTROLLER: 6809 c->Request.CDBLen = 10; 6810 c->Request.type_attr_dir = 6811 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ); 6812 c->Request.Timeout = 0; 6813 c->Request.CDB[0] = BMIC_READ; 6814 c->Request.CDB[1] = 0; 6815 c->Request.CDB[2] = 0; 6816 c->Request.CDB[3] = 0; 6817 c->Request.CDB[4] = 0; 6818 c->Request.CDB[5] = 0; 6819 c->Request.CDB[6] = BMIC_IDENTIFY_CONTROLLER; 6820 c->Request.CDB[7] = (size >> 16) & 0xFF; 6821 c->Request.CDB[8] = (size >> 8) & 0XFF; 6822 c->Request.CDB[9] = 0; 6823 break; 6824 default: 6825 dev_warn(&h->pdev->dev, "unknown command 0x%c\n", cmd); 6826 BUG(); 6827 } 6828 } else if (cmd_type == TYPE_MSG) { 6829 switch (cmd) { 6830 6831 case HPSA_PHYS_TARGET_RESET: 6832 c->Request.CDBLen = 16; 6833 c->Request.type_attr_dir = 6834 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE); 6835 c->Request.Timeout = 0; /* Don't time out */ 6836 memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); 6837 c->Request.CDB[0] = HPSA_RESET; 6838 c->Request.CDB[1] = HPSA_TARGET_RESET_TYPE; 6839 /* Physical target reset needs no control bytes 4-7*/ 6840 c->Request.CDB[4] = 0x00; 6841 c->Request.CDB[5] = 0x00; 6842 c->Request.CDB[6] = 0x00; 6843 c->Request.CDB[7] = 0x00; 6844 break; 6845 case HPSA_DEVICE_RESET_MSG: 6846 c->Request.CDBLen = 16; 6847 c->Request.type_attr_dir = 6848 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE); 6849 c->Request.Timeout = 0; /* Don't time out */ 6850 memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); 6851 c->Request.CDB[0] = cmd; 6852 c->Request.CDB[1] = HPSA_RESET_TYPE_LUN; 6853 /* If bytes 4-7 are zero, it means reset the */ 6854 /* LunID device */ 6855 c->Request.CDB[4] = 0x00; 6856 c->Request.CDB[5] = 0x00; 6857 c->Request.CDB[6] = 0x00; 6858 c->Request.CDB[7] = 0x00; 6859 break; 6860 default: 6861 dev_warn(&h->pdev->dev, "unknown message type %d\n", 6862 cmd); 6863 BUG(); 6864 } 6865 } else { 6866 dev_warn(&h->pdev->dev, "unknown command type %d\n", cmd_type); 6867 BUG(); 6868 } 6869 6870 switch (GET_DIR(c->Request.type_attr_dir)) { 6871 case XFER_READ: 6872 dir = DMA_FROM_DEVICE; 6873 break; 6874 case XFER_WRITE: 6875 dir = DMA_TO_DEVICE; 6876 break; 6877 case XFER_NONE: 6878 dir = DMA_NONE; 6879 break; 6880 default: 6881 dir = DMA_BIDIRECTIONAL; 6882 } 6883 if (hpsa_map_one(h->pdev, c, buff, size, dir)) 6884 return -1; 6885 return 0; 6886 } 6887 6888 /* 6889 * Map (physical) PCI mem into (virtual) kernel space 6890 */ 6891 static void __iomem *remap_pci_mem(ulong base, ulong size) 6892 { 6893 ulong page_base = ((ulong) base) & PAGE_MASK; 6894 ulong page_offs = ((ulong) base) - page_base; 6895 void __iomem *page_remapped = ioremap(page_base, 6896 page_offs + size); 6897 6898 return page_remapped ? (page_remapped + page_offs) : NULL; 6899 } 6900 6901 static inline unsigned long get_next_completion(struct ctlr_info *h, u8 q) 6902 { 6903 return h->access.command_completed(h, q); 6904 } 6905 6906 static inline bool interrupt_pending(struct ctlr_info *h) 6907 { 6908 return h->access.intr_pending(h); 6909 } 6910 6911 static inline long interrupt_not_for_us(struct ctlr_info *h) 6912 { 6913 return (h->access.intr_pending(h) == 0) || 6914 (h->interrupts_enabled == 0); 6915 } 6916 6917 static inline int bad_tag(struct ctlr_info *h, u32 tag_index, 6918 u32 raw_tag) 6919 { 6920 if (unlikely(tag_index >= h->nr_cmds)) { 6921 dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag); 6922 return 1; 6923 } 6924 return 0; 6925 } 6926 6927 static inline void finish_cmd(struct CommandList *c) 6928 { 6929 dial_up_lockup_detection_on_fw_flash_complete(c->h, c); 6930 if (likely(c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_SCSI 6931 || c->cmd_type == CMD_IOACCEL2)) 6932 complete_scsi_command(c); 6933 else if (c->cmd_type == CMD_IOCTL_PEND || c->cmd_type == IOACCEL2_TMF) 6934 complete(c->waiting); 6935 } 6936 6937 /* process completion of an indexed ("direct lookup") command */ 6938 static inline void process_indexed_cmd(struct ctlr_info *h, 6939 u32 raw_tag) 6940 { 6941 u32 tag_index; 6942 struct CommandList *c; 6943 6944 tag_index = raw_tag >> DIRECT_LOOKUP_SHIFT; 6945 if (!bad_tag(h, tag_index, raw_tag)) { 6946 c = h->cmd_pool + tag_index; 6947 finish_cmd(c); 6948 } 6949 } 6950 6951 /* Some controllers, like p400, will give us one interrupt 6952 * after a soft reset, even if we turned interrupts off. 6953 * Only need to check for this in the hpsa_xxx_discard_completions 6954 * functions. 6955 */ 6956 static int ignore_bogus_interrupt(struct ctlr_info *h) 6957 { 6958 if (likely(!reset_devices)) 6959 return 0; 6960 6961 if (likely(h->interrupts_enabled)) 6962 return 0; 6963 6964 dev_info(&h->pdev->dev, "Received interrupt while interrupts disabled " 6965 "(known firmware bug.) Ignoring.\n"); 6966 6967 return 1; 6968 } 6969 6970 /* 6971 * Convert &h->q[x] (passed to interrupt handlers) back to h. 6972 * Relies on (h-q[x] == x) being true for x such that 6973 * 0 <= x < MAX_REPLY_QUEUES. 6974 */ 6975 static struct ctlr_info *queue_to_hba(u8 *queue) 6976 { 6977 return container_of((queue - *queue), struct ctlr_info, q[0]); 6978 } 6979 6980 static irqreturn_t hpsa_intx_discard_completions(int irq, void *queue) 6981 { 6982 struct ctlr_info *h = queue_to_hba(queue); 6983 u8 q = *(u8 *) queue; 6984 u32 raw_tag; 6985 6986 if (ignore_bogus_interrupt(h)) 6987 return IRQ_NONE; 6988 6989 if (interrupt_not_for_us(h)) 6990 return IRQ_NONE; 6991 h->last_intr_timestamp = get_jiffies_64(); 6992 while (interrupt_pending(h)) { 6993 raw_tag = get_next_completion(h, q); 6994 while (raw_tag != FIFO_EMPTY) 6995 raw_tag = next_command(h, q); 6996 } 6997 return IRQ_HANDLED; 6998 } 6999 7000 static irqreturn_t hpsa_msix_discard_completions(int irq, void *queue) 7001 { 7002 struct ctlr_info *h = queue_to_hba(queue); 7003 u32 raw_tag; 7004 u8 q = *(u8 *) queue; 7005 7006 if (ignore_bogus_interrupt(h)) 7007 return IRQ_NONE; 7008 7009 h->last_intr_timestamp = get_jiffies_64(); 7010 raw_tag = get_next_completion(h, q); 7011 while (raw_tag != FIFO_EMPTY) 7012 raw_tag = next_command(h, q); 7013 return IRQ_HANDLED; 7014 } 7015 7016 static irqreturn_t do_hpsa_intr_intx(int irq, void *queue) 7017 { 7018 struct ctlr_info *h = queue_to_hba((u8 *) queue); 7019 u32 raw_tag; 7020 u8 q = *(u8 *) queue; 7021 7022 if (interrupt_not_for_us(h)) 7023 return IRQ_NONE; 7024 h->last_intr_timestamp = get_jiffies_64(); 7025 while (interrupt_pending(h)) { 7026 raw_tag = get_next_completion(h, q); 7027 while (raw_tag != FIFO_EMPTY) { 7028 process_indexed_cmd(h, raw_tag); 7029 raw_tag = next_command(h, q); 7030 } 7031 } 7032 return IRQ_HANDLED; 7033 } 7034 7035 static irqreturn_t do_hpsa_intr_msi(int irq, void *queue) 7036 { 7037 struct ctlr_info *h = queue_to_hba(queue); 7038 u32 raw_tag; 7039 u8 q = *(u8 *) queue; 7040 7041 h->last_intr_timestamp = get_jiffies_64(); 7042 raw_tag = get_next_completion(h, q); 7043 while (raw_tag != FIFO_EMPTY) { 7044 process_indexed_cmd(h, raw_tag); 7045 raw_tag = next_command(h, q); 7046 } 7047 return IRQ_HANDLED; 7048 } 7049 7050 /* Send a message CDB to the firmware. Careful, this only works 7051 * in simple mode, not performant mode due to the tag lookup. 7052 * We only ever use this immediately after a controller reset. 7053 */ 7054 static int hpsa_message(struct pci_dev *pdev, unsigned char opcode, 7055 unsigned char type) 7056 { 7057 struct Command { 7058 struct CommandListHeader CommandHeader; 7059 struct RequestBlock Request; 7060 struct ErrDescriptor ErrorDescriptor; 7061 }; 7062 struct Command *cmd; 7063 static const size_t cmd_sz = sizeof(*cmd) + 7064 sizeof(cmd->ErrorDescriptor); 7065 dma_addr_t paddr64; 7066 __le32 paddr32; 7067 u32 tag; 7068 void __iomem *vaddr; 7069 int i, err; 7070 7071 vaddr = pci_ioremap_bar(pdev, 0); 7072 if (vaddr == NULL) 7073 return -ENOMEM; 7074 7075 /* The Inbound Post Queue only accepts 32-bit physical addresses for the 7076 * CCISS commands, so they must be allocated from the lower 4GiB of 7077 * memory. 7078 */ 7079 err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); 7080 if (err) { 7081 iounmap(vaddr); 7082 return err; 7083 } 7084 7085 cmd = dma_alloc_coherent(&pdev->dev, cmd_sz, &paddr64, GFP_KERNEL); 7086 if (cmd == NULL) { 7087 iounmap(vaddr); 7088 return -ENOMEM; 7089 } 7090 7091 /* This must fit, because of the 32-bit consistent DMA mask. Also, 7092 * although there's no guarantee, we assume that the address is at 7093 * least 4-byte aligned (most likely, it's page-aligned). 7094 */ 7095 paddr32 = cpu_to_le32(paddr64); 7096 7097 cmd->CommandHeader.ReplyQueue = 0; 7098 cmd->CommandHeader.SGList = 0; 7099 cmd->CommandHeader.SGTotal = cpu_to_le16(0); 7100 cmd->CommandHeader.tag = cpu_to_le64(paddr64); 7101 memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8); 7102 7103 cmd->Request.CDBLen = 16; 7104 cmd->Request.type_attr_dir = 7105 TYPE_ATTR_DIR(TYPE_MSG, ATTR_HEADOFQUEUE, XFER_NONE); 7106 cmd->Request.Timeout = 0; /* Don't time out */ 7107 cmd->Request.CDB[0] = opcode; 7108 cmd->Request.CDB[1] = type; 7109 memset(&cmd->Request.CDB[2], 0, 14); /* rest of the CDB is reserved */ 7110 cmd->ErrorDescriptor.Addr = 7111 cpu_to_le64((le32_to_cpu(paddr32) + sizeof(*cmd))); 7112 cmd->ErrorDescriptor.Len = cpu_to_le32(sizeof(struct ErrorInfo)); 7113 7114 writel(le32_to_cpu(paddr32), vaddr + SA5_REQUEST_PORT_OFFSET); 7115 7116 for (i = 0; i < HPSA_MSG_SEND_RETRY_LIMIT; i++) { 7117 tag = readl(vaddr + SA5_REPLY_PORT_OFFSET); 7118 if ((tag & ~HPSA_SIMPLE_ERROR_BITS) == paddr64) 7119 break; 7120 msleep(HPSA_MSG_SEND_RETRY_INTERVAL_MSECS); 7121 } 7122 7123 iounmap(vaddr); 7124 7125 /* we leak the DMA buffer here ... no choice since the controller could 7126 * still complete the command. 7127 */ 7128 if (i == HPSA_MSG_SEND_RETRY_LIMIT) { 7129 dev_err(&pdev->dev, "controller message %02x:%02x timed out\n", 7130 opcode, type); 7131 return -ETIMEDOUT; 7132 } 7133 7134 dma_free_coherent(&pdev->dev, cmd_sz, cmd, paddr64); 7135 7136 if (tag & HPSA_ERROR_BIT) { 7137 dev_err(&pdev->dev, "controller message %02x:%02x failed\n", 7138 opcode, type); 7139 return -EIO; 7140 } 7141 7142 dev_info(&pdev->dev, "controller message %02x:%02x succeeded\n", 7143 opcode, type); 7144 return 0; 7145 } 7146 7147 #define hpsa_noop(p) hpsa_message(p, 3, 0) 7148 7149 static int hpsa_controller_hard_reset(struct pci_dev *pdev, 7150 void __iomem *vaddr, u32 use_doorbell) 7151 { 7152 7153 if (use_doorbell) { 7154 /* For everything after the P600, the PCI power state method 7155 * of resetting the controller doesn't work, so we have this 7156 * other way using the doorbell register. 7157 */ 7158 dev_info(&pdev->dev, "using doorbell to reset controller\n"); 7159 writel(use_doorbell, vaddr + SA5_DOORBELL); 7160 7161 /* PMC hardware guys tell us we need a 10 second delay after 7162 * doorbell reset and before any attempt to talk to the board 7163 * at all to ensure that this actually works and doesn't fall 7164 * over in some weird corner cases. 7165 */ 7166 msleep(10000); 7167 } else { /* Try to do it the PCI power state way */ 7168 7169 /* Quoting from the Open CISS Specification: "The Power 7170 * Management Control/Status Register (CSR) controls the power 7171 * state of the device. The normal operating state is D0, 7172 * CSR=00h. The software off state is D3, CSR=03h. To reset 7173 * the controller, place the interface device in D3 then to D0, 7174 * this causes a secondary PCI reset which will reset the 7175 * controller." */ 7176 7177 int rc = 0; 7178 7179 dev_info(&pdev->dev, "using PCI PM to reset controller\n"); 7180 7181 /* enter the D3hot power management state */ 7182 rc = pci_set_power_state(pdev, PCI_D3hot); 7183 if (rc) 7184 return rc; 7185 7186 msleep(500); 7187 7188 /* enter the D0 power management state */ 7189 rc = pci_set_power_state(pdev, PCI_D0); 7190 if (rc) 7191 return rc; 7192 7193 /* 7194 * The P600 requires a small delay when changing states. 7195 * Otherwise we may think the board did not reset and we bail. 7196 * This for kdump only and is particular to the P600. 7197 */ 7198 msleep(500); 7199 } 7200 return 0; 7201 } 7202 7203 static void init_driver_version(char *driver_version, int len) 7204 { 7205 memset(driver_version, 0, len); 7206 strncpy(driver_version, HPSA " " HPSA_DRIVER_VERSION, len - 1); 7207 } 7208 7209 static int write_driver_ver_to_cfgtable(struct CfgTable __iomem *cfgtable) 7210 { 7211 char *driver_version; 7212 int i, size = sizeof(cfgtable->driver_version); 7213 7214 driver_version = kmalloc(size, GFP_KERNEL); 7215 if (!driver_version) 7216 return -ENOMEM; 7217 7218 init_driver_version(driver_version, size); 7219 for (i = 0; i < size; i++) 7220 writeb(driver_version[i], &cfgtable->driver_version[i]); 7221 kfree(driver_version); 7222 return 0; 7223 } 7224 7225 static void read_driver_ver_from_cfgtable(struct CfgTable __iomem *cfgtable, 7226 unsigned char *driver_ver) 7227 { 7228 int i; 7229 7230 for (i = 0; i < sizeof(cfgtable->driver_version); i++) 7231 driver_ver[i] = readb(&cfgtable->driver_version[i]); 7232 } 7233 7234 static int controller_reset_failed(struct CfgTable __iomem *cfgtable) 7235 { 7236 7237 char *driver_ver, *old_driver_ver; 7238 int rc, size = sizeof(cfgtable->driver_version); 7239 7240 old_driver_ver = kmalloc_array(2, size, GFP_KERNEL); 7241 if (!old_driver_ver) 7242 return -ENOMEM; 7243 driver_ver = old_driver_ver + size; 7244 7245 /* After a reset, the 32 bytes of "driver version" in the cfgtable 7246 * should have been changed, otherwise we know the reset failed. 7247 */ 7248 init_driver_version(old_driver_ver, size); 7249 read_driver_ver_from_cfgtable(cfgtable, driver_ver); 7250 rc = !memcmp(driver_ver, old_driver_ver, size); 7251 kfree(old_driver_ver); 7252 return rc; 7253 } 7254 /* This does a hard reset of the controller using PCI power management 7255 * states or the using the doorbell register. 7256 */ 7257 static int hpsa_kdump_hard_reset_controller(struct pci_dev *pdev, u32 board_id) 7258 { 7259 u64 cfg_offset; 7260 u32 cfg_base_addr; 7261 u64 cfg_base_addr_index; 7262 void __iomem *vaddr; 7263 unsigned long paddr; 7264 u32 misc_fw_support; 7265 int rc; 7266 struct CfgTable __iomem *cfgtable; 7267 u32 use_doorbell; 7268 u16 command_register; 7269 7270 /* For controllers as old as the P600, this is very nearly 7271 * the same thing as 7272 * 7273 * pci_save_state(pci_dev); 7274 * pci_set_power_state(pci_dev, PCI_D3hot); 7275 * pci_set_power_state(pci_dev, PCI_D0); 7276 * pci_restore_state(pci_dev); 7277 * 7278 * For controllers newer than the P600, the pci power state 7279 * method of resetting doesn't work so we have another way 7280 * using the doorbell register. 7281 */ 7282 7283 if (!ctlr_is_resettable(board_id)) { 7284 dev_warn(&pdev->dev, "Controller not resettable\n"); 7285 return -ENODEV; 7286 } 7287 7288 /* if controller is soft- but not hard resettable... */ 7289 if (!ctlr_is_hard_resettable(board_id)) 7290 return -ENOTSUPP; /* try soft reset later. */ 7291 7292 /* Save the PCI command register */ 7293 pci_read_config_word(pdev, 4, &command_register); 7294 pci_save_state(pdev); 7295 7296 /* find the first memory BAR, so we can find the cfg table */ 7297 rc = hpsa_pci_find_memory_BAR(pdev, &paddr); 7298 if (rc) 7299 return rc; 7300 vaddr = remap_pci_mem(paddr, 0x250); 7301 if (!vaddr) 7302 return -ENOMEM; 7303 7304 /* find cfgtable in order to check if reset via doorbell is supported */ 7305 rc = hpsa_find_cfg_addrs(pdev, vaddr, &cfg_base_addr, 7306 &cfg_base_addr_index, &cfg_offset); 7307 if (rc) 7308 goto unmap_vaddr; 7309 cfgtable = remap_pci_mem(pci_resource_start(pdev, 7310 cfg_base_addr_index) + cfg_offset, sizeof(*cfgtable)); 7311 if (!cfgtable) { 7312 rc = -ENOMEM; 7313 goto unmap_vaddr; 7314 } 7315 rc = write_driver_ver_to_cfgtable(cfgtable); 7316 if (rc) 7317 goto unmap_cfgtable; 7318 7319 /* If reset via doorbell register is supported, use that. 7320 * There are two such methods. Favor the newest method. 7321 */ 7322 misc_fw_support = readl(&cfgtable->misc_fw_support); 7323 use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET2; 7324 if (use_doorbell) { 7325 use_doorbell = DOORBELL_CTLR_RESET2; 7326 } else { 7327 use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET; 7328 if (use_doorbell) { 7329 dev_warn(&pdev->dev, 7330 "Soft reset not supported. Firmware update is required.\n"); 7331 rc = -ENOTSUPP; /* try soft reset */ 7332 goto unmap_cfgtable; 7333 } 7334 } 7335 7336 rc = hpsa_controller_hard_reset(pdev, vaddr, use_doorbell); 7337 if (rc) 7338 goto unmap_cfgtable; 7339 7340 pci_restore_state(pdev); 7341 pci_write_config_word(pdev, 4, command_register); 7342 7343 /* Some devices (notably the HP Smart Array 5i Controller) 7344 need a little pause here */ 7345 msleep(HPSA_POST_RESET_PAUSE_MSECS); 7346 7347 rc = hpsa_wait_for_board_state(pdev, vaddr, BOARD_READY); 7348 if (rc) { 7349 dev_warn(&pdev->dev, 7350 "Failed waiting for board to become ready after hard reset\n"); 7351 goto unmap_cfgtable; 7352 } 7353 7354 rc = controller_reset_failed(vaddr); 7355 if (rc < 0) 7356 goto unmap_cfgtable; 7357 if (rc) { 7358 dev_warn(&pdev->dev, "Unable to successfully reset " 7359 "controller. Will try soft reset.\n"); 7360 rc = -ENOTSUPP; 7361 } else { 7362 dev_info(&pdev->dev, "board ready after hard reset.\n"); 7363 } 7364 7365 unmap_cfgtable: 7366 iounmap(cfgtable); 7367 7368 unmap_vaddr: 7369 iounmap(vaddr); 7370 return rc; 7371 } 7372 7373 /* 7374 * We cannot read the structure directly, for portability we must use 7375 * the io functions. 7376 * This is for debug only. 7377 */ 7378 static void print_cfg_table(struct device *dev, struct CfgTable __iomem *tb) 7379 { 7380 #ifdef HPSA_DEBUG 7381 int i; 7382 char temp_name[17]; 7383 7384 dev_info(dev, "Controller Configuration information\n"); 7385 dev_info(dev, "------------------------------------\n"); 7386 for (i = 0; i < 4; i++) 7387 temp_name[i] = readb(&(tb->Signature[i])); 7388 temp_name[4] = '\0'; 7389 dev_info(dev, " Signature = %s\n", temp_name); 7390 dev_info(dev, " Spec Number = %d\n", readl(&(tb->SpecValence))); 7391 dev_info(dev, " Transport methods supported = 0x%x\n", 7392 readl(&(tb->TransportSupport))); 7393 dev_info(dev, " Transport methods active = 0x%x\n", 7394 readl(&(tb->TransportActive))); 7395 dev_info(dev, " Requested transport Method = 0x%x\n", 7396 readl(&(tb->HostWrite.TransportRequest))); 7397 dev_info(dev, " Coalesce Interrupt Delay = 0x%x\n", 7398 readl(&(tb->HostWrite.CoalIntDelay))); 7399 dev_info(dev, " Coalesce Interrupt Count = 0x%x\n", 7400 readl(&(tb->HostWrite.CoalIntCount))); 7401 dev_info(dev, " Max outstanding commands = %d\n", 7402 readl(&(tb->CmdsOutMax))); 7403 dev_info(dev, " Bus Types = 0x%x\n", readl(&(tb->BusTypes))); 7404 for (i = 0; i < 16; i++) 7405 temp_name[i] = readb(&(tb->ServerName[i])); 7406 temp_name[16] = '\0'; 7407 dev_info(dev, " Server Name = %s\n", temp_name); 7408 dev_info(dev, " Heartbeat Counter = 0x%x\n\n\n", 7409 readl(&(tb->HeartBeat))); 7410 #endif /* HPSA_DEBUG */ 7411 } 7412 7413 static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr) 7414 { 7415 int i, offset, mem_type, bar_type; 7416 7417 if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ 7418 return 0; 7419 offset = 0; 7420 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { 7421 bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE; 7422 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) 7423 offset += 4; 7424 else { 7425 mem_type = pci_resource_flags(pdev, i) & 7426 PCI_BASE_ADDRESS_MEM_TYPE_MASK; 7427 switch (mem_type) { 7428 case PCI_BASE_ADDRESS_MEM_TYPE_32: 7429 case PCI_BASE_ADDRESS_MEM_TYPE_1M: 7430 offset += 4; /* 32 bit */ 7431 break; 7432 case PCI_BASE_ADDRESS_MEM_TYPE_64: 7433 offset += 8; 7434 break; 7435 default: /* reserved in PCI 2.2 */ 7436 dev_warn(&pdev->dev, 7437 "base address is invalid\n"); 7438 return -1; 7439 } 7440 } 7441 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) 7442 return i + 1; 7443 } 7444 return -1; 7445 } 7446 7447 static void hpsa_disable_interrupt_mode(struct ctlr_info *h) 7448 { 7449 pci_free_irq_vectors(h->pdev); 7450 h->msix_vectors = 0; 7451 } 7452 7453 static void hpsa_setup_reply_map(struct ctlr_info *h) 7454 { 7455 const struct cpumask *mask; 7456 unsigned int queue, cpu; 7457 7458 for (queue = 0; queue < h->msix_vectors; queue++) { 7459 mask = pci_irq_get_affinity(h->pdev, queue); 7460 if (!mask) 7461 goto fallback; 7462 7463 for_each_cpu(cpu, mask) 7464 h->reply_map[cpu] = queue; 7465 } 7466 return; 7467 7468 fallback: 7469 for_each_possible_cpu(cpu) 7470 h->reply_map[cpu] = 0; 7471 } 7472 7473 /* If MSI/MSI-X is supported by the kernel we will try to enable it on 7474 * controllers that are capable. If not, we use legacy INTx mode. 7475 */ 7476 static int hpsa_interrupt_mode(struct ctlr_info *h) 7477 { 7478 unsigned int flags = PCI_IRQ_LEGACY; 7479 int ret; 7480 7481 /* Some boards advertise MSI but don't really support it */ 7482 switch (h->board_id) { 7483 case 0x40700E11: 7484 case 0x40800E11: 7485 case 0x40820E11: 7486 case 0x40830E11: 7487 break; 7488 default: 7489 ret = pci_alloc_irq_vectors(h->pdev, 1, MAX_REPLY_QUEUES, 7490 PCI_IRQ_MSIX | PCI_IRQ_AFFINITY); 7491 if (ret > 0) { 7492 h->msix_vectors = ret; 7493 return 0; 7494 } 7495 7496 flags |= PCI_IRQ_MSI; 7497 break; 7498 } 7499 7500 ret = pci_alloc_irq_vectors(h->pdev, 1, 1, flags); 7501 if (ret < 0) 7502 return ret; 7503 return 0; 7504 } 7505 7506 static int hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id, 7507 bool *legacy_board) 7508 { 7509 int i; 7510 u32 subsystem_vendor_id, subsystem_device_id; 7511 7512 subsystem_vendor_id = pdev->subsystem_vendor; 7513 subsystem_device_id = pdev->subsystem_device; 7514 *board_id = ((subsystem_device_id << 16) & 0xffff0000) | 7515 subsystem_vendor_id; 7516 7517 if (legacy_board) 7518 *legacy_board = false; 7519 for (i = 0; i < ARRAY_SIZE(products); i++) 7520 if (*board_id == products[i].board_id) { 7521 if (products[i].access != &SA5A_access && 7522 products[i].access != &SA5B_access) 7523 return i; 7524 dev_warn(&pdev->dev, 7525 "legacy board ID: 0x%08x\n", 7526 *board_id); 7527 if (legacy_board) 7528 *legacy_board = true; 7529 return i; 7530 } 7531 7532 dev_warn(&pdev->dev, "unrecognized board ID: 0x%08x\n", *board_id); 7533 if (legacy_board) 7534 *legacy_board = true; 7535 return ARRAY_SIZE(products) - 1; /* generic unknown smart array */ 7536 } 7537 7538 static int hpsa_pci_find_memory_BAR(struct pci_dev *pdev, 7539 unsigned long *memory_bar) 7540 { 7541 int i; 7542 7543 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) 7544 if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) { 7545 /* addressing mode bits already removed */ 7546 *memory_bar = pci_resource_start(pdev, i); 7547 dev_dbg(&pdev->dev, "memory BAR = %lx\n", 7548 *memory_bar); 7549 return 0; 7550 } 7551 dev_warn(&pdev->dev, "no memory BAR found\n"); 7552 return -ENODEV; 7553 } 7554 7555 static int hpsa_wait_for_board_state(struct pci_dev *pdev, void __iomem *vaddr, 7556 int wait_for_ready) 7557 { 7558 int i, iterations; 7559 u32 scratchpad; 7560 if (wait_for_ready) 7561 iterations = HPSA_BOARD_READY_ITERATIONS; 7562 else 7563 iterations = HPSA_BOARD_NOT_READY_ITERATIONS; 7564 7565 for (i = 0; i < iterations; i++) { 7566 scratchpad = readl(vaddr + SA5_SCRATCHPAD_OFFSET); 7567 if (wait_for_ready) { 7568 if (scratchpad == HPSA_FIRMWARE_READY) 7569 return 0; 7570 } else { 7571 if (scratchpad != HPSA_FIRMWARE_READY) 7572 return 0; 7573 } 7574 msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS); 7575 } 7576 dev_warn(&pdev->dev, "board not ready, timed out.\n"); 7577 return -ENODEV; 7578 } 7579 7580 static int hpsa_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr, 7581 u32 *cfg_base_addr, u64 *cfg_base_addr_index, 7582 u64 *cfg_offset) 7583 { 7584 *cfg_base_addr = readl(vaddr + SA5_CTCFG_OFFSET); 7585 *cfg_offset = readl(vaddr + SA5_CTMEM_OFFSET); 7586 *cfg_base_addr &= (u32) 0x0000ffff; 7587 *cfg_base_addr_index = find_PCI_BAR_index(pdev, *cfg_base_addr); 7588 if (*cfg_base_addr_index == -1) { 7589 dev_warn(&pdev->dev, "cannot find cfg_base_addr_index\n"); 7590 return -ENODEV; 7591 } 7592 return 0; 7593 } 7594 7595 static void hpsa_free_cfgtables(struct ctlr_info *h) 7596 { 7597 if (h->transtable) { 7598 iounmap(h->transtable); 7599 h->transtable = NULL; 7600 } 7601 if (h->cfgtable) { 7602 iounmap(h->cfgtable); 7603 h->cfgtable = NULL; 7604 } 7605 } 7606 7607 /* Find and map CISS config table and transfer table 7608 + * several items must be unmapped (freed) later 7609 + * */ 7610 static int hpsa_find_cfgtables(struct ctlr_info *h) 7611 { 7612 u64 cfg_offset; 7613 u32 cfg_base_addr; 7614 u64 cfg_base_addr_index; 7615 u32 trans_offset; 7616 int rc; 7617 7618 rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr, 7619 &cfg_base_addr_index, &cfg_offset); 7620 if (rc) 7621 return rc; 7622 h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev, 7623 cfg_base_addr_index) + cfg_offset, sizeof(*h->cfgtable)); 7624 if (!h->cfgtable) { 7625 dev_err(&h->pdev->dev, "Failed mapping cfgtable\n"); 7626 return -ENOMEM; 7627 } 7628 rc = write_driver_ver_to_cfgtable(h->cfgtable); 7629 if (rc) 7630 return rc; 7631 /* Find performant mode table. */ 7632 trans_offset = readl(&h->cfgtable->TransMethodOffset); 7633 h->transtable = remap_pci_mem(pci_resource_start(h->pdev, 7634 cfg_base_addr_index)+cfg_offset+trans_offset, 7635 sizeof(*h->transtable)); 7636 if (!h->transtable) { 7637 dev_err(&h->pdev->dev, "Failed mapping transfer table\n"); 7638 hpsa_free_cfgtables(h); 7639 return -ENOMEM; 7640 } 7641 return 0; 7642 } 7643 7644 static void hpsa_get_max_perf_mode_cmds(struct ctlr_info *h) 7645 { 7646 #define MIN_MAX_COMMANDS 16 7647 BUILD_BUG_ON(MIN_MAX_COMMANDS <= HPSA_NRESERVED_CMDS); 7648 7649 h->max_commands = readl(&h->cfgtable->MaxPerformantModeCommands); 7650 7651 /* Limit commands in memory limited kdump scenario. */ 7652 if (reset_devices && h->max_commands > 32) 7653 h->max_commands = 32; 7654 7655 if (h->max_commands < MIN_MAX_COMMANDS) { 7656 dev_warn(&h->pdev->dev, 7657 "Controller reports max supported commands of %d Using %d instead. Ensure that firmware is up to date.\n", 7658 h->max_commands, 7659 MIN_MAX_COMMANDS); 7660 h->max_commands = MIN_MAX_COMMANDS; 7661 } 7662 } 7663 7664 /* If the controller reports that the total max sg entries is greater than 512, 7665 * then we know that chained SG blocks work. (Original smart arrays did not 7666 * support chained SG blocks and would return zero for max sg entries.) 7667 */ 7668 static int hpsa_supports_chained_sg_blocks(struct ctlr_info *h) 7669 { 7670 return h->maxsgentries > 512; 7671 } 7672 7673 /* Interrogate the hardware for some limits: 7674 * max commands, max SG elements without chaining, and with chaining, 7675 * SG chain block size, etc. 7676 */ 7677 static void hpsa_find_board_params(struct ctlr_info *h) 7678 { 7679 hpsa_get_max_perf_mode_cmds(h); 7680 h->nr_cmds = h->max_commands; 7681 h->maxsgentries = readl(&(h->cfgtable->MaxScatterGatherElements)); 7682 h->fw_support = readl(&(h->cfgtable->misc_fw_support)); 7683 if (hpsa_supports_chained_sg_blocks(h)) { 7684 /* Limit in-command s/g elements to 32 save dma'able memory. */ 7685 h->max_cmd_sg_entries = 32; 7686 h->chainsize = h->maxsgentries - h->max_cmd_sg_entries; 7687 h->maxsgentries--; /* save one for chain pointer */ 7688 } else { 7689 /* 7690 * Original smart arrays supported at most 31 s/g entries 7691 * embedded inline in the command (trying to use more 7692 * would lock up the controller) 7693 */ 7694 h->max_cmd_sg_entries = 31; 7695 h->maxsgentries = 31; /* default to traditional values */ 7696 h->chainsize = 0; 7697 } 7698 7699 /* Find out what task management functions are supported and cache */ 7700 h->TMFSupportFlags = readl(&(h->cfgtable->TMFSupportFlags)); 7701 if (!(HPSATMF_PHYS_TASK_ABORT & h->TMFSupportFlags)) 7702 dev_warn(&h->pdev->dev, "Physical aborts not supported\n"); 7703 if (!(HPSATMF_LOG_TASK_ABORT & h->TMFSupportFlags)) 7704 dev_warn(&h->pdev->dev, "Logical aborts not supported\n"); 7705 if (!(HPSATMF_IOACCEL_ENABLED & h->TMFSupportFlags)) 7706 dev_warn(&h->pdev->dev, "HP SSD Smart Path aborts not supported\n"); 7707 } 7708 7709 static inline bool hpsa_CISS_signature_present(struct ctlr_info *h) 7710 { 7711 if (!check_signature(h->cfgtable->Signature, "CISS", 4)) { 7712 dev_err(&h->pdev->dev, "not a valid CISS config table\n"); 7713 return false; 7714 } 7715 return true; 7716 } 7717 7718 static inline void hpsa_set_driver_support_bits(struct ctlr_info *h) 7719 { 7720 u32 driver_support; 7721 7722 driver_support = readl(&(h->cfgtable->driver_support)); 7723 /* Need to enable prefetch in the SCSI core for 6400 in x86 */ 7724 #ifdef CONFIG_X86 7725 driver_support |= ENABLE_SCSI_PREFETCH; 7726 #endif 7727 driver_support |= ENABLE_UNIT_ATTN; 7728 writel(driver_support, &(h->cfgtable->driver_support)); 7729 } 7730 7731 /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result 7732 * in a prefetch beyond physical memory. 7733 */ 7734 static inline void hpsa_p600_dma_prefetch_quirk(struct ctlr_info *h) 7735 { 7736 u32 dma_prefetch; 7737 7738 if (h->board_id != 0x3225103C) 7739 return; 7740 dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG); 7741 dma_prefetch |= 0x8000; 7742 writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG); 7743 } 7744 7745 static int hpsa_wait_for_clear_event_notify_ack(struct ctlr_info *h) 7746 { 7747 int i; 7748 u32 doorbell_value; 7749 unsigned long flags; 7750 /* wait until the clear_event_notify bit 6 is cleared by controller. */ 7751 for (i = 0; i < MAX_CLEAR_EVENT_WAIT; i++) { 7752 spin_lock_irqsave(&h->lock, flags); 7753 doorbell_value = readl(h->vaddr + SA5_DOORBELL); 7754 spin_unlock_irqrestore(&h->lock, flags); 7755 if (!(doorbell_value & DOORBELL_CLEAR_EVENTS)) 7756 goto done; 7757 /* delay and try again */ 7758 msleep(CLEAR_EVENT_WAIT_INTERVAL); 7759 } 7760 return -ENODEV; 7761 done: 7762 return 0; 7763 } 7764 7765 static int hpsa_wait_for_mode_change_ack(struct ctlr_info *h) 7766 { 7767 int i; 7768 u32 doorbell_value; 7769 unsigned long flags; 7770 7771 /* under certain very rare conditions, this can take awhile. 7772 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right 7773 * as we enter this code.) 7774 */ 7775 for (i = 0; i < MAX_MODE_CHANGE_WAIT; i++) { 7776 if (h->remove_in_progress) 7777 goto done; 7778 spin_lock_irqsave(&h->lock, flags); 7779 doorbell_value = readl(h->vaddr + SA5_DOORBELL); 7780 spin_unlock_irqrestore(&h->lock, flags); 7781 if (!(doorbell_value & CFGTBL_ChangeReq)) 7782 goto done; 7783 /* delay and try again */ 7784 msleep(MODE_CHANGE_WAIT_INTERVAL); 7785 } 7786 return -ENODEV; 7787 done: 7788 return 0; 7789 } 7790 7791 /* return -ENODEV or other reason on error, 0 on success */ 7792 static int hpsa_enter_simple_mode(struct ctlr_info *h) 7793 { 7794 u32 trans_support; 7795 7796 trans_support = readl(&(h->cfgtable->TransportSupport)); 7797 if (!(trans_support & SIMPLE_MODE)) 7798 return -ENOTSUPP; 7799 7800 h->max_commands = readl(&(h->cfgtable->CmdsOutMax)); 7801 7802 /* Update the field, and then ring the doorbell */ 7803 writel(CFGTBL_Trans_Simple, &(h->cfgtable->HostWrite.TransportRequest)); 7804 writel(0, &h->cfgtable->HostWrite.command_pool_addr_hi); 7805 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); 7806 if (hpsa_wait_for_mode_change_ack(h)) 7807 goto error; 7808 print_cfg_table(&h->pdev->dev, h->cfgtable); 7809 if (!(readl(&(h->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) 7810 goto error; 7811 h->transMethod = CFGTBL_Trans_Simple; 7812 return 0; 7813 error: 7814 dev_err(&h->pdev->dev, "failed to enter simple mode\n"); 7815 return -ENODEV; 7816 } 7817 7818 /* free items allocated or mapped by hpsa_pci_init */ 7819 static void hpsa_free_pci_init(struct ctlr_info *h) 7820 { 7821 hpsa_free_cfgtables(h); /* pci_init 4 */ 7822 iounmap(h->vaddr); /* pci_init 3 */ 7823 h->vaddr = NULL; 7824 hpsa_disable_interrupt_mode(h); /* pci_init 2 */ 7825 /* 7826 * call pci_disable_device before pci_release_regions per 7827 * Documentation/driver-api/pci/pci.rst 7828 */ 7829 pci_disable_device(h->pdev); /* pci_init 1 */ 7830 pci_release_regions(h->pdev); /* pci_init 2 */ 7831 } 7832 7833 /* several items must be freed later */ 7834 static int hpsa_pci_init(struct ctlr_info *h) 7835 { 7836 int prod_index, err; 7837 bool legacy_board; 7838 7839 prod_index = hpsa_lookup_board_id(h->pdev, &h->board_id, &legacy_board); 7840 if (prod_index < 0) 7841 return prod_index; 7842 h->product_name = products[prod_index].product_name; 7843 h->access = *(products[prod_index].access); 7844 h->legacy_board = legacy_board; 7845 pci_disable_link_state(h->pdev, PCIE_LINK_STATE_L0S | 7846 PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM); 7847 7848 err = pci_enable_device(h->pdev); 7849 if (err) { 7850 dev_err(&h->pdev->dev, "failed to enable PCI device\n"); 7851 pci_disable_device(h->pdev); 7852 return err; 7853 } 7854 7855 err = pci_request_regions(h->pdev, HPSA); 7856 if (err) { 7857 dev_err(&h->pdev->dev, 7858 "failed to obtain PCI resources\n"); 7859 pci_disable_device(h->pdev); 7860 return err; 7861 } 7862 7863 pci_set_master(h->pdev); 7864 7865 err = hpsa_interrupt_mode(h); 7866 if (err) 7867 goto clean1; 7868 7869 /* setup mapping between CPU and reply queue */ 7870 hpsa_setup_reply_map(h); 7871 7872 err = hpsa_pci_find_memory_BAR(h->pdev, &h->paddr); 7873 if (err) 7874 goto clean2; /* intmode+region, pci */ 7875 h->vaddr = remap_pci_mem(h->paddr, 0x250); 7876 if (!h->vaddr) { 7877 dev_err(&h->pdev->dev, "failed to remap PCI mem\n"); 7878 err = -ENOMEM; 7879 goto clean2; /* intmode+region, pci */ 7880 } 7881 err = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY); 7882 if (err) 7883 goto clean3; /* vaddr, intmode+region, pci */ 7884 err = hpsa_find_cfgtables(h); 7885 if (err) 7886 goto clean3; /* vaddr, intmode+region, pci */ 7887 hpsa_find_board_params(h); 7888 7889 if (!hpsa_CISS_signature_present(h)) { 7890 err = -ENODEV; 7891 goto clean4; /* cfgtables, vaddr, intmode+region, pci */ 7892 } 7893 hpsa_set_driver_support_bits(h); 7894 hpsa_p600_dma_prefetch_quirk(h); 7895 err = hpsa_enter_simple_mode(h); 7896 if (err) 7897 goto clean4; /* cfgtables, vaddr, intmode+region, pci */ 7898 return 0; 7899 7900 clean4: /* cfgtables, vaddr, intmode+region, pci */ 7901 hpsa_free_cfgtables(h); 7902 clean3: /* vaddr, intmode+region, pci */ 7903 iounmap(h->vaddr); 7904 h->vaddr = NULL; 7905 clean2: /* intmode+region, pci */ 7906 hpsa_disable_interrupt_mode(h); 7907 clean1: 7908 /* 7909 * call pci_disable_device before pci_release_regions per 7910 * Documentation/driver-api/pci/pci.rst 7911 */ 7912 pci_disable_device(h->pdev); 7913 pci_release_regions(h->pdev); 7914 return err; 7915 } 7916 7917 static void hpsa_hba_inquiry(struct ctlr_info *h) 7918 { 7919 int rc; 7920 7921 #define HBA_INQUIRY_BYTE_COUNT 64 7922 h->hba_inquiry_data = kmalloc(HBA_INQUIRY_BYTE_COUNT, GFP_KERNEL); 7923 if (!h->hba_inquiry_data) 7924 return; 7925 rc = hpsa_scsi_do_inquiry(h, RAID_CTLR_LUNID, 0, 7926 h->hba_inquiry_data, HBA_INQUIRY_BYTE_COUNT); 7927 if (rc != 0) { 7928 kfree(h->hba_inquiry_data); 7929 h->hba_inquiry_data = NULL; 7930 } 7931 } 7932 7933 static int hpsa_init_reset_devices(struct pci_dev *pdev, u32 board_id) 7934 { 7935 int rc, i; 7936 void __iomem *vaddr; 7937 7938 if (!reset_devices) 7939 return 0; 7940 7941 /* kdump kernel is loading, we don't know in which state is 7942 * the pci interface. The dev->enable_cnt is equal zero 7943 * so we call enable+disable, wait a while and switch it on. 7944 */ 7945 rc = pci_enable_device(pdev); 7946 if (rc) { 7947 dev_warn(&pdev->dev, "Failed to enable PCI device\n"); 7948 return -ENODEV; 7949 } 7950 pci_disable_device(pdev); 7951 msleep(260); /* a randomly chosen number */ 7952 rc = pci_enable_device(pdev); 7953 if (rc) { 7954 dev_warn(&pdev->dev, "failed to enable device.\n"); 7955 return -ENODEV; 7956 } 7957 7958 pci_set_master(pdev); 7959 7960 vaddr = pci_ioremap_bar(pdev, 0); 7961 if (vaddr == NULL) { 7962 rc = -ENOMEM; 7963 goto out_disable; 7964 } 7965 writel(SA5_INTR_OFF, vaddr + SA5_REPLY_INTR_MASK_OFFSET); 7966 iounmap(vaddr); 7967 7968 /* Reset the controller with a PCI power-cycle or via doorbell */ 7969 rc = hpsa_kdump_hard_reset_controller(pdev, board_id); 7970 7971 /* -ENOTSUPP here means we cannot reset the controller 7972 * but it's already (and still) up and running in 7973 * "performant mode". Or, it might be 640x, which can't reset 7974 * due to concerns about shared bbwc between 6402/6404 pair. 7975 */ 7976 if (rc) 7977 goto out_disable; 7978 7979 /* Now try to get the controller to respond to a no-op */ 7980 dev_info(&pdev->dev, "Waiting for controller to respond to no-op\n"); 7981 for (i = 0; i < HPSA_POST_RESET_NOOP_RETRIES; i++) { 7982 if (hpsa_noop(pdev) == 0) 7983 break; 7984 else 7985 dev_warn(&pdev->dev, "no-op failed%s\n", 7986 (i < 11 ? "; re-trying" : "")); 7987 } 7988 7989 out_disable: 7990 7991 pci_disable_device(pdev); 7992 return rc; 7993 } 7994 7995 static void hpsa_free_cmd_pool(struct ctlr_info *h) 7996 { 7997 kfree(h->cmd_pool_bits); 7998 h->cmd_pool_bits = NULL; 7999 if (h->cmd_pool) { 8000 dma_free_coherent(&h->pdev->dev, 8001 h->nr_cmds * sizeof(struct CommandList), 8002 h->cmd_pool, 8003 h->cmd_pool_dhandle); 8004 h->cmd_pool = NULL; 8005 h->cmd_pool_dhandle = 0; 8006 } 8007 if (h->errinfo_pool) { 8008 dma_free_coherent(&h->pdev->dev, 8009 h->nr_cmds * sizeof(struct ErrorInfo), 8010 h->errinfo_pool, 8011 h->errinfo_pool_dhandle); 8012 h->errinfo_pool = NULL; 8013 h->errinfo_pool_dhandle = 0; 8014 } 8015 } 8016 8017 static int hpsa_alloc_cmd_pool(struct ctlr_info *h) 8018 { 8019 h->cmd_pool_bits = kcalloc(DIV_ROUND_UP(h->nr_cmds, BITS_PER_LONG), 8020 sizeof(unsigned long), 8021 GFP_KERNEL); 8022 h->cmd_pool = dma_alloc_coherent(&h->pdev->dev, 8023 h->nr_cmds * sizeof(*h->cmd_pool), 8024 &h->cmd_pool_dhandle, GFP_KERNEL); 8025 h->errinfo_pool = dma_alloc_coherent(&h->pdev->dev, 8026 h->nr_cmds * sizeof(*h->errinfo_pool), 8027 &h->errinfo_pool_dhandle, GFP_KERNEL); 8028 if ((h->cmd_pool_bits == NULL) 8029 || (h->cmd_pool == NULL) 8030 || (h->errinfo_pool == NULL)) { 8031 dev_err(&h->pdev->dev, "out of memory in %s", __func__); 8032 goto clean_up; 8033 } 8034 hpsa_preinitialize_commands(h); 8035 return 0; 8036 clean_up: 8037 hpsa_free_cmd_pool(h); 8038 return -ENOMEM; 8039 } 8040 8041 /* clear affinity hints and free MSI-X, MSI, or legacy INTx vectors */ 8042 static void hpsa_free_irqs(struct ctlr_info *h) 8043 { 8044 int i; 8045 int irq_vector = 0; 8046 8047 if (hpsa_simple_mode) 8048 irq_vector = h->intr_mode; 8049 8050 if (!h->msix_vectors || h->intr_mode != PERF_MODE_INT) { 8051 /* Single reply queue, only one irq to free */ 8052 free_irq(pci_irq_vector(h->pdev, irq_vector), 8053 &h->q[h->intr_mode]); 8054 h->q[h->intr_mode] = 0; 8055 return; 8056 } 8057 8058 for (i = 0; i < h->msix_vectors; i++) { 8059 free_irq(pci_irq_vector(h->pdev, i), &h->q[i]); 8060 h->q[i] = 0; 8061 } 8062 for (; i < MAX_REPLY_QUEUES; i++) 8063 h->q[i] = 0; 8064 } 8065 8066 /* returns 0 on success; cleans up and returns -Enn on error */ 8067 static int hpsa_request_irqs(struct ctlr_info *h, 8068 irqreturn_t (*msixhandler)(int, void *), 8069 irqreturn_t (*intxhandler)(int, void *)) 8070 { 8071 int rc, i; 8072 int irq_vector = 0; 8073 8074 if (hpsa_simple_mode) 8075 irq_vector = h->intr_mode; 8076 8077 /* 8078 * initialize h->q[x] = x so that interrupt handlers know which 8079 * queue to process. 8080 */ 8081 for (i = 0; i < MAX_REPLY_QUEUES; i++) 8082 h->q[i] = (u8) i; 8083 8084 if (h->intr_mode == PERF_MODE_INT && h->msix_vectors > 0) { 8085 /* If performant mode and MSI-X, use multiple reply queues */ 8086 for (i = 0; i < h->msix_vectors; i++) { 8087 sprintf(h->intrname[i], "%s-msix%d", h->devname, i); 8088 rc = request_irq(pci_irq_vector(h->pdev, i), msixhandler, 8089 0, h->intrname[i], 8090 &h->q[i]); 8091 if (rc) { 8092 int j; 8093 8094 dev_err(&h->pdev->dev, 8095 "failed to get irq %d for %s\n", 8096 pci_irq_vector(h->pdev, i), h->devname); 8097 for (j = 0; j < i; j++) { 8098 free_irq(pci_irq_vector(h->pdev, j), &h->q[j]); 8099 h->q[j] = 0; 8100 } 8101 for (; j < MAX_REPLY_QUEUES; j++) 8102 h->q[j] = 0; 8103 return rc; 8104 } 8105 } 8106 } else { 8107 /* Use single reply pool */ 8108 if (h->msix_vectors > 0 || h->pdev->msi_enabled) { 8109 sprintf(h->intrname[0], "%s-msi%s", h->devname, 8110 h->msix_vectors ? "x" : ""); 8111 rc = request_irq(pci_irq_vector(h->pdev, irq_vector), 8112 msixhandler, 0, 8113 h->intrname[0], 8114 &h->q[h->intr_mode]); 8115 } else { 8116 sprintf(h->intrname[h->intr_mode], 8117 "%s-intx", h->devname); 8118 rc = request_irq(pci_irq_vector(h->pdev, irq_vector), 8119 intxhandler, IRQF_SHARED, 8120 h->intrname[0], 8121 &h->q[h->intr_mode]); 8122 } 8123 } 8124 if (rc) { 8125 dev_err(&h->pdev->dev, "failed to get irq %d for %s\n", 8126 pci_irq_vector(h->pdev, irq_vector), h->devname); 8127 hpsa_free_irqs(h); 8128 return -ENODEV; 8129 } 8130 return 0; 8131 } 8132 8133 static int hpsa_kdump_soft_reset(struct ctlr_info *h) 8134 { 8135 int rc; 8136 hpsa_send_host_reset(h, HPSA_RESET_TYPE_CONTROLLER); 8137 8138 dev_info(&h->pdev->dev, "Waiting for board to soft reset.\n"); 8139 rc = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_NOT_READY); 8140 if (rc) { 8141 dev_warn(&h->pdev->dev, "Soft reset had no effect.\n"); 8142 return rc; 8143 } 8144 8145 dev_info(&h->pdev->dev, "Board reset, awaiting READY status.\n"); 8146 rc = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY); 8147 if (rc) { 8148 dev_warn(&h->pdev->dev, "Board failed to become ready " 8149 "after soft reset.\n"); 8150 return rc; 8151 } 8152 8153 return 0; 8154 } 8155 8156 static void hpsa_free_reply_queues(struct ctlr_info *h) 8157 { 8158 int i; 8159 8160 for (i = 0; i < h->nreply_queues; i++) { 8161 if (!h->reply_queue[i].head) 8162 continue; 8163 dma_free_coherent(&h->pdev->dev, 8164 h->reply_queue_size, 8165 h->reply_queue[i].head, 8166 h->reply_queue[i].busaddr); 8167 h->reply_queue[i].head = NULL; 8168 h->reply_queue[i].busaddr = 0; 8169 } 8170 h->reply_queue_size = 0; 8171 } 8172 8173 static void hpsa_undo_allocations_after_kdump_soft_reset(struct ctlr_info *h) 8174 { 8175 hpsa_free_performant_mode(h); /* init_one 7 */ 8176 hpsa_free_sg_chain_blocks(h); /* init_one 6 */ 8177 hpsa_free_cmd_pool(h); /* init_one 5 */ 8178 hpsa_free_irqs(h); /* init_one 4 */ 8179 scsi_host_put(h->scsi_host); /* init_one 3 */ 8180 h->scsi_host = NULL; /* init_one 3 */ 8181 hpsa_free_pci_init(h); /* init_one 2_5 */ 8182 free_percpu(h->lockup_detected); /* init_one 2 */ 8183 h->lockup_detected = NULL; /* init_one 2 */ 8184 if (h->resubmit_wq) { 8185 destroy_workqueue(h->resubmit_wq); /* init_one 1 */ 8186 h->resubmit_wq = NULL; 8187 } 8188 if (h->rescan_ctlr_wq) { 8189 destroy_workqueue(h->rescan_ctlr_wq); 8190 h->rescan_ctlr_wq = NULL; 8191 } 8192 if (h->monitor_ctlr_wq) { 8193 destroy_workqueue(h->monitor_ctlr_wq); 8194 h->monitor_ctlr_wq = NULL; 8195 } 8196 8197 kfree(h); /* init_one 1 */ 8198 } 8199 8200 /* Called when controller lockup detected. */ 8201 static void fail_all_outstanding_cmds(struct ctlr_info *h) 8202 { 8203 int i, refcount; 8204 struct CommandList *c; 8205 int failcount = 0; 8206 8207 flush_workqueue(h->resubmit_wq); /* ensure all cmds are fully built */ 8208 for (i = 0; i < h->nr_cmds; i++) { 8209 c = h->cmd_pool + i; 8210 refcount = atomic_inc_return(&c->refcount); 8211 if (refcount > 1) { 8212 c->err_info->CommandStatus = CMD_CTLR_LOCKUP; 8213 finish_cmd(c); 8214 atomic_dec(&h->commands_outstanding); 8215 failcount++; 8216 } 8217 cmd_free(h, c); 8218 } 8219 dev_warn(&h->pdev->dev, 8220 "failed %d commands in fail_all\n", failcount); 8221 } 8222 8223 static void set_lockup_detected_for_all_cpus(struct ctlr_info *h, u32 value) 8224 { 8225 int cpu; 8226 8227 for_each_online_cpu(cpu) { 8228 u32 *lockup_detected; 8229 lockup_detected = per_cpu_ptr(h->lockup_detected, cpu); 8230 *lockup_detected = value; 8231 } 8232 wmb(); /* be sure the per-cpu variables are out to memory */ 8233 } 8234 8235 static void controller_lockup_detected(struct ctlr_info *h) 8236 { 8237 unsigned long flags; 8238 u32 lockup_detected; 8239 8240 h->access.set_intr_mask(h, HPSA_INTR_OFF); 8241 spin_lock_irqsave(&h->lock, flags); 8242 lockup_detected = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET); 8243 if (!lockup_detected) { 8244 /* no heartbeat, but controller gave us a zero. */ 8245 dev_warn(&h->pdev->dev, 8246 "lockup detected after %d but scratchpad register is zero\n", 8247 h->heartbeat_sample_interval / HZ); 8248 lockup_detected = 0xffffffff; 8249 } 8250 set_lockup_detected_for_all_cpus(h, lockup_detected); 8251 spin_unlock_irqrestore(&h->lock, flags); 8252 dev_warn(&h->pdev->dev, "Controller lockup detected: 0x%08x after %d\n", 8253 lockup_detected, h->heartbeat_sample_interval / HZ); 8254 if (lockup_detected == 0xffff0000) { 8255 dev_warn(&h->pdev->dev, "Telling controller to do a CHKPT\n"); 8256 writel(DOORBELL_GENERATE_CHKPT, h->vaddr + SA5_DOORBELL); 8257 } 8258 pci_disable_device(h->pdev); 8259 fail_all_outstanding_cmds(h); 8260 } 8261 8262 static int detect_controller_lockup(struct ctlr_info *h) 8263 { 8264 u64 now; 8265 u32 heartbeat; 8266 unsigned long flags; 8267 8268 now = get_jiffies_64(); 8269 /* If we've received an interrupt recently, we're ok. */ 8270 if (time_after64(h->last_intr_timestamp + 8271 (h->heartbeat_sample_interval), now)) 8272 return false; 8273 8274 /* 8275 * If we've already checked the heartbeat recently, we're ok. 8276 * This could happen if someone sends us a signal. We 8277 * otherwise don't care about signals in this thread. 8278 */ 8279 if (time_after64(h->last_heartbeat_timestamp + 8280 (h->heartbeat_sample_interval), now)) 8281 return false; 8282 8283 /* If heartbeat has not changed since we last looked, we're not ok. */ 8284 spin_lock_irqsave(&h->lock, flags); 8285 heartbeat = readl(&h->cfgtable->HeartBeat); 8286 spin_unlock_irqrestore(&h->lock, flags); 8287 if (h->last_heartbeat == heartbeat) { 8288 controller_lockup_detected(h); 8289 return true; 8290 } 8291 8292 /* We're ok. */ 8293 h->last_heartbeat = heartbeat; 8294 h->last_heartbeat_timestamp = now; 8295 return false; 8296 } 8297 8298 /* 8299 * Set ioaccel status for all ioaccel volumes. 8300 * 8301 * Called from monitor controller worker (hpsa_event_monitor_worker) 8302 * 8303 * A Volume (or Volumes that comprise an Array set) may be undergoing a 8304 * transformation, so we will be turning off ioaccel for all volumes that 8305 * make up the Array. 8306 */ 8307 static void hpsa_set_ioaccel_status(struct ctlr_info *h) 8308 { 8309 int rc; 8310 int i; 8311 u8 ioaccel_status; 8312 unsigned char *buf; 8313 struct hpsa_scsi_dev_t *device; 8314 8315 if (!h) 8316 return; 8317 8318 buf = kmalloc(64, GFP_KERNEL); 8319 if (!buf) 8320 return; 8321 8322 /* 8323 * Run through current device list used during I/O requests. 8324 */ 8325 for (i = 0; i < h->ndevices; i++) { 8326 int offload_to_be_enabled = 0; 8327 int offload_config = 0; 8328 8329 device = h->dev[i]; 8330 8331 if (!device) 8332 continue; 8333 if (!hpsa_vpd_page_supported(h, device->scsi3addr, 8334 HPSA_VPD_LV_IOACCEL_STATUS)) 8335 continue; 8336 8337 memset(buf, 0, 64); 8338 8339 rc = hpsa_scsi_do_inquiry(h, device->scsi3addr, 8340 VPD_PAGE | HPSA_VPD_LV_IOACCEL_STATUS, 8341 buf, 64); 8342 if (rc != 0) 8343 continue; 8344 8345 ioaccel_status = buf[IOACCEL_STATUS_BYTE]; 8346 8347 /* 8348 * Check if offload is still configured on 8349 */ 8350 offload_config = 8351 !!(ioaccel_status & OFFLOAD_CONFIGURED_BIT); 8352 /* 8353 * If offload is configured on, check to see if ioaccel 8354 * needs to be enabled. 8355 */ 8356 if (offload_config) 8357 offload_to_be_enabled = 8358 !!(ioaccel_status & OFFLOAD_ENABLED_BIT); 8359 8360 /* 8361 * If ioaccel is to be re-enabled, re-enable later during the 8362 * scan operation so the driver can get a fresh raidmap 8363 * before turning ioaccel back on. 8364 */ 8365 if (offload_to_be_enabled) 8366 continue; 8367 8368 /* 8369 * Immediately turn off ioaccel for any volume the 8370 * controller tells us to. Some of the reasons could be: 8371 * transformation - change to the LVs of an Array. 8372 * degraded volume - component failure 8373 */ 8374 hpsa_turn_off_ioaccel_for_device(device); 8375 } 8376 8377 kfree(buf); 8378 } 8379 8380 static void hpsa_ack_ctlr_events(struct ctlr_info *h) 8381 { 8382 char *event_type; 8383 8384 if (!(h->fw_support & MISC_FW_EVENT_NOTIFY)) 8385 return; 8386 8387 /* Ask the controller to clear the events we're handling. */ 8388 if ((h->transMethod & (CFGTBL_Trans_io_accel1 8389 | CFGTBL_Trans_io_accel2)) && 8390 (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_STATE_CHANGE || 8391 h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_CONFIG_CHANGE)) { 8392 8393 if (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_STATE_CHANGE) 8394 event_type = "state change"; 8395 if (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_CONFIG_CHANGE) 8396 event_type = "configuration change"; 8397 /* Stop sending new RAID offload reqs via the IO accelerator */ 8398 scsi_block_requests(h->scsi_host); 8399 hpsa_set_ioaccel_status(h); 8400 hpsa_drain_accel_commands(h); 8401 /* Set 'accelerator path config change' bit */ 8402 dev_warn(&h->pdev->dev, 8403 "Acknowledging event: 0x%08x (HP SSD Smart Path %s)\n", 8404 h->events, event_type); 8405 writel(h->events, &(h->cfgtable->clear_event_notify)); 8406 /* Set the "clear event notify field update" bit 6 */ 8407 writel(DOORBELL_CLEAR_EVENTS, h->vaddr + SA5_DOORBELL); 8408 /* Wait until ctlr clears 'clear event notify field', bit 6 */ 8409 hpsa_wait_for_clear_event_notify_ack(h); 8410 scsi_unblock_requests(h->scsi_host); 8411 } else { 8412 /* Acknowledge controller notification events. */ 8413 writel(h->events, &(h->cfgtable->clear_event_notify)); 8414 writel(DOORBELL_CLEAR_EVENTS, h->vaddr + SA5_DOORBELL); 8415 hpsa_wait_for_clear_event_notify_ack(h); 8416 } 8417 return; 8418 } 8419 8420 /* Check a register on the controller to see if there are configuration 8421 * changes (added/changed/removed logical drives, etc.) which mean that 8422 * we should rescan the controller for devices. 8423 * Also check flag for driver-initiated rescan. 8424 */ 8425 static int hpsa_ctlr_needs_rescan(struct ctlr_info *h) 8426 { 8427 if (h->drv_req_rescan) { 8428 h->drv_req_rescan = 0; 8429 return 1; 8430 } 8431 8432 if (!(h->fw_support & MISC_FW_EVENT_NOTIFY)) 8433 return 0; 8434 8435 h->events = readl(&(h->cfgtable->event_notify)); 8436 return h->events & RESCAN_REQUIRED_EVENT_BITS; 8437 } 8438 8439 /* 8440 * Check if any of the offline devices have become ready 8441 */ 8442 static int hpsa_offline_devices_ready(struct ctlr_info *h) 8443 { 8444 unsigned long flags; 8445 struct offline_device_entry *d; 8446 struct list_head *this, *tmp; 8447 8448 spin_lock_irqsave(&h->offline_device_lock, flags); 8449 list_for_each_safe(this, tmp, &h->offline_device_list) { 8450 d = list_entry(this, struct offline_device_entry, 8451 offline_list); 8452 spin_unlock_irqrestore(&h->offline_device_lock, flags); 8453 if (!hpsa_volume_offline(h, d->scsi3addr)) { 8454 spin_lock_irqsave(&h->offline_device_lock, flags); 8455 list_del(&d->offline_list); 8456 spin_unlock_irqrestore(&h->offline_device_lock, flags); 8457 return 1; 8458 } 8459 spin_lock_irqsave(&h->offline_device_lock, flags); 8460 } 8461 spin_unlock_irqrestore(&h->offline_device_lock, flags); 8462 return 0; 8463 } 8464 8465 static int hpsa_luns_changed(struct ctlr_info *h) 8466 { 8467 int rc = 1; /* assume there are changes */ 8468 struct ReportLUNdata *logdev = NULL; 8469 8470 /* if we can't find out if lun data has changed, 8471 * assume that it has. 8472 */ 8473 8474 if (!h->lastlogicals) 8475 return rc; 8476 8477 logdev = kzalloc(sizeof(*logdev), GFP_KERNEL); 8478 if (!logdev) 8479 return rc; 8480 8481 if (hpsa_scsi_do_report_luns(h, 1, logdev, sizeof(*logdev), 0)) { 8482 dev_warn(&h->pdev->dev, 8483 "report luns failed, can't track lun changes.\n"); 8484 goto out; 8485 } 8486 if (memcmp(logdev, h->lastlogicals, sizeof(*logdev))) { 8487 dev_info(&h->pdev->dev, 8488 "Lun changes detected.\n"); 8489 memcpy(h->lastlogicals, logdev, sizeof(*logdev)); 8490 goto out; 8491 } else 8492 rc = 0; /* no changes detected. */ 8493 out: 8494 kfree(logdev); 8495 return rc; 8496 } 8497 8498 static void hpsa_perform_rescan(struct ctlr_info *h) 8499 { 8500 struct Scsi_Host *sh = NULL; 8501 unsigned long flags; 8502 8503 /* 8504 * Do the scan after the reset 8505 */ 8506 spin_lock_irqsave(&h->reset_lock, flags); 8507 if (h->reset_in_progress) { 8508 h->drv_req_rescan = 1; 8509 spin_unlock_irqrestore(&h->reset_lock, flags); 8510 return; 8511 } 8512 spin_unlock_irqrestore(&h->reset_lock, flags); 8513 8514 sh = scsi_host_get(h->scsi_host); 8515 if (sh != NULL) { 8516 hpsa_scan_start(sh); 8517 scsi_host_put(sh); 8518 h->drv_req_rescan = 0; 8519 } 8520 } 8521 8522 /* 8523 * watch for controller events 8524 */ 8525 static void hpsa_event_monitor_worker(struct work_struct *work) 8526 { 8527 struct ctlr_info *h = container_of(to_delayed_work(work), 8528 struct ctlr_info, event_monitor_work); 8529 unsigned long flags; 8530 8531 spin_lock_irqsave(&h->lock, flags); 8532 if (h->remove_in_progress) { 8533 spin_unlock_irqrestore(&h->lock, flags); 8534 return; 8535 } 8536 spin_unlock_irqrestore(&h->lock, flags); 8537 8538 if (hpsa_ctlr_needs_rescan(h)) { 8539 hpsa_ack_ctlr_events(h); 8540 hpsa_perform_rescan(h); 8541 } 8542 8543 spin_lock_irqsave(&h->lock, flags); 8544 if (!h->remove_in_progress) 8545 queue_delayed_work(h->monitor_ctlr_wq, &h->event_monitor_work, 8546 HPSA_EVENT_MONITOR_INTERVAL); 8547 spin_unlock_irqrestore(&h->lock, flags); 8548 } 8549 8550 static void hpsa_rescan_ctlr_worker(struct work_struct *work) 8551 { 8552 unsigned long flags; 8553 struct ctlr_info *h = container_of(to_delayed_work(work), 8554 struct ctlr_info, rescan_ctlr_work); 8555 8556 spin_lock_irqsave(&h->lock, flags); 8557 if (h->remove_in_progress) { 8558 spin_unlock_irqrestore(&h->lock, flags); 8559 return; 8560 } 8561 spin_unlock_irqrestore(&h->lock, flags); 8562 8563 if (h->drv_req_rescan || hpsa_offline_devices_ready(h)) { 8564 hpsa_perform_rescan(h); 8565 } else if (h->discovery_polling) { 8566 if (hpsa_luns_changed(h)) { 8567 dev_info(&h->pdev->dev, 8568 "driver discovery polling rescan.\n"); 8569 hpsa_perform_rescan(h); 8570 } 8571 } 8572 spin_lock_irqsave(&h->lock, flags); 8573 if (!h->remove_in_progress) 8574 queue_delayed_work(h->rescan_ctlr_wq, &h->rescan_ctlr_work, 8575 h->heartbeat_sample_interval); 8576 spin_unlock_irqrestore(&h->lock, flags); 8577 } 8578 8579 static void hpsa_monitor_ctlr_worker(struct work_struct *work) 8580 { 8581 unsigned long flags; 8582 struct ctlr_info *h = container_of(to_delayed_work(work), 8583 struct ctlr_info, monitor_ctlr_work); 8584 8585 detect_controller_lockup(h); 8586 if (lockup_detected(h)) 8587 return; 8588 8589 spin_lock_irqsave(&h->lock, flags); 8590 if (!h->remove_in_progress) 8591 queue_delayed_work(h->monitor_ctlr_wq, &h->monitor_ctlr_work, 8592 h->heartbeat_sample_interval); 8593 spin_unlock_irqrestore(&h->lock, flags); 8594 } 8595 8596 static struct workqueue_struct *hpsa_create_controller_wq(struct ctlr_info *h, 8597 char *name) 8598 { 8599 struct workqueue_struct *wq = NULL; 8600 8601 wq = alloc_ordered_workqueue("%s_%d_hpsa", 0, name, h->ctlr); 8602 if (!wq) 8603 dev_err(&h->pdev->dev, "failed to create %s workqueue\n", name); 8604 8605 return wq; 8606 } 8607 8608 static void hpda_free_ctlr_info(struct ctlr_info *h) 8609 { 8610 kfree(h->reply_map); 8611 kfree(h); 8612 } 8613 8614 static struct ctlr_info *hpda_alloc_ctlr_info(void) 8615 { 8616 struct ctlr_info *h; 8617 8618 h = kzalloc(sizeof(*h), GFP_KERNEL); 8619 if (!h) 8620 return NULL; 8621 8622 h->reply_map = kcalloc(nr_cpu_ids, sizeof(*h->reply_map), GFP_KERNEL); 8623 if (!h->reply_map) { 8624 kfree(h); 8625 return NULL; 8626 } 8627 return h; 8628 } 8629 8630 static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) 8631 { 8632 int rc; 8633 struct ctlr_info *h; 8634 int try_soft_reset = 0; 8635 unsigned long flags; 8636 u32 board_id; 8637 8638 if (number_of_controllers == 0) 8639 printk(KERN_INFO DRIVER_NAME "\n"); 8640 8641 rc = hpsa_lookup_board_id(pdev, &board_id, NULL); 8642 if (rc < 0) { 8643 dev_warn(&pdev->dev, "Board ID not found\n"); 8644 return rc; 8645 } 8646 8647 rc = hpsa_init_reset_devices(pdev, board_id); 8648 if (rc) { 8649 if (rc != -ENOTSUPP) 8650 return rc; 8651 /* If the reset fails in a particular way (it has no way to do 8652 * a proper hard reset, so returns -ENOTSUPP) we can try to do 8653 * a soft reset once we get the controller configured up to the 8654 * point that it can accept a command. 8655 */ 8656 try_soft_reset = 1; 8657 rc = 0; 8658 } 8659 8660 reinit_after_soft_reset: 8661 8662 /* Command structures must be aligned on a 32-byte boundary because 8663 * the 5 lower bits of the address are used by the hardware. and by 8664 * the driver. See comments in hpsa.h for more info. 8665 */ 8666 BUILD_BUG_ON(sizeof(struct CommandList) % COMMANDLIST_ALIGNMENT); 8667 h = hpda_alloc_ctlr_info(); 8668 if (!h) { 8669 dev_err(&pdev->dev, "Failed to allocate controller head\n"); 8670 return -ENOMEM; 8671 } 8672 8673 h->pdev = pdev; 8674 8675 h->intr_mode = hpsa_simple_mode ? SIMPLE_MODE_INT : PERF_MODE_INT; 8676 INIT_LIST_HEAD(&h->offline_device_list); 8677 spin_lock_init(&h->lock); 8678 spin_lock_init(&h->offline_device_lock); 8679 spin_lock_init(&h->scan_lock); 8680 spin_lock_init(&h->reset_lock); 8681 atomic_set(&h->passthru_cmds_avail, HPSA_MAX_CONCURRENT_PASSTHRUS); 8682 8683 /* Allocate and clear per-cpu variable lockup_detected */ 8684 h->lockup_detected = alloc_percpu(u32); 8685 if (!h->lockup_detected) { 8686 dev_err(&h->pdev->dev, "Failed to allocate lockup detector\n"); 8687 rc = -ENOMEM; 8688 goto clean1; /* aer/h */ 8689 } 8690 set_lockup_detected_for_all_cpus(h, 0); 8691 8692 rc = hpsa_pci_init(h); 8693 if (rc) 8694 goto clean2; /* lu, aer/h */ 8695 8696 /* relies on h-> settings made by hpsa_pci_init, including 8697 * interrupt_mode h->intr */ 8698 rc = hpsa_scsi_host_alloc(h); 8699 if (rc) 8700 goto clean2_5; /* pci, lu, aer/h */ 8701 8702 sprintf(h->devname, HPSA "%d", h->scsi_host->host_no); 8703 h->ctlr = number_of_controllers; 8704 number_of_controllers++; 8705 8706 /* configure PCI DMA stuff */ 8707 rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)); 8708 if (rc != 0) { 8709 rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); 8710 if (rc != 0) { 8711 dev_err(&pdev->dev, "no suitable DMA available\n"); 8712 goto clean3; /* shost, pci, lu, aer/h */ 8713 } 8714 } 8715 8716 /* make sure the board interrupts are off */ 8717 h->access.set_intr_mask(h, HPSA_INTR_OFF); 8718 8719 rc = hpsa_request_irqs(h, do_hpsa_intr_msi, do_hpsa_intr_intx); 8720 if (rc) 8721 goto clean3; /* shost, pci, lu, aer/h */ 8722 rc = hpsa_alloc_cmd_pool(h); 8723 if (rc) 8724 goto clean4; /* irq, shost, pci, lu, aer/h */ 8725 rc = hpsa_alloc_sg_chain_blocks(h); 8726 if (rc) 8727 goto clean5; /* cmd, irq, shost, pci, lu, aer/h */ 8728 init_waitqueue_head(&h->scan_wait_queue); 8729 init_waitqueue_head(&h->event_sync_wait_queue); 8730 mutex_init(&h->reset_mutex); 8731 h->scan_finished = 1; /* no scan currently in progress */ 8732 h->scan_waiting = 0; 8733 8734 pci_set_drvdata(pdev, h); 8735 h->ndevices = 0; 8736 8737 spin_lock_init(&h->devlock); 8738 rc = hpsa_put_ctlr_into_performant_mode(h); 8739 if (rc) 8740 goto clean6; /* sg, cmd, irq, shost, pci, lu, aer/h */ 8741 8742 /* create the resubmit workqueue */ 8743 h->rescan_ctlr_wq = hpsa_create_controller_wq(h, "rescan"); 8744 if (!h->rescan_ctlr_wq) { 8745 rc = -ENOMEM; 8746 goto clean7; 8747 } 8748 8749 h->resubmit_wq = hpsa_create_controller_wq(h, "resubmit"); 8750 if (!h->resubmit_wq) { 8751 rc = -ENOMEM; 8752 goto clean7; /* aer/h */ 8753 } 8754 8755 h->monitor_ctlr_wq = hpsa_create_controller_wq(h, "monitor"); 8756 if (!h->monitor_ctlr_wq) { 8757 rc = -ENOMEM; 8758 goto clean7; 8759 } 8760 8761 /* 8762 * At this point, the controller is ready to take commands. 8763 * Now, if reset_devices and the hard reset didn't work, try 8764 * the soft reset and see if that works. 8765 */ 8766 if (try_soft_reset) { 8767 8768 /* This is kind of gross. We may or may not get a completion 8769 * from the soft reset command, and if we do, then the value 8770 * from the fifo may or may not be valid. So, we wait 10 secs 8771 * after the reset throwing away any completions we get during 8772 * that time. Unregister the interrupt handler and register 8773 * fake ones to scoop up any residual completions. 8774 */ 8775 spin_lock_irqsave(&h->lock, flags); 8776 h->access.set_intr_mask(h, HPSA_INTR_OFF); 8777 spin_unlock_irqrestore(&h->lock, flags); 8778 hpsa_free_irqs(h); 8779 rc = hpsa_request_irqs(h, hpsa_msix_discard_completions, 8780 hpsa_intx_discard_completions); 8781 if (rc) { 8782 dev_warn(&h->pdev->dev, 8783 "Failed to request_irq after soft reset.\n"); 8784 /* 8785 * cannot goto clean7 or free_irqs will be called 8786 * again. Instead, do its work 8787 */ 8788 hpsa_free_performant_mode(h); /* clean7 */ 8789 hpsa_free_sg_chain_blocks(h); /* clean6 */ 8790 hpsa_free_cmd_pool(h); /* clean5 */ 8791 /* 8792 * skip hpsa_free_irqs(h) clean4 since that 8793 * was just called before request_irqs failed 8794 */ 8795 goto clean3; 8796 } 8797 8798 rc = hpsa_kdump_soft_reset(h); 8799 if (rc) 8800 /* Neither hard nor soft reset worked, we're hosed. */ 8801 goto clean7; 8802 8803 dev_info(&h->pdev->dev, "Board READY.\n"); 8804 dev_info(&h->pdev->dev, 8805 "Waiting for stale completions to drain.\n"); 8806 h->access.set_intr_mask(h, HPSA_INTR_ON); 8807 msleep(10000); 8808 h->access.set_intr_mask(h, HPSA_INTR_OFF); 8809 8810 rc = controller_reset_failed(h->cfgtable); 8811 if (rc) 8812 dev_info(&h->pdev->dev, 8813 "Soft reset appears to have failed.\n"); 8814 8815 /* since the controller's reset, we have to go back and re-init 8816 * everything. Easiest to just forget what we've done and do it 8817 * all over again. 8818 */ 8819 hpsa_undo_allocations_after_kdump_soft_reset(h); 8820 try_soft_reset = 0; 8821 if (rc) 8822 /* don't goto clean, we already unallocated */ 8823 return -ENODEV; 8824 8825 goto reinit_after_soft_reset; 8826 } 8827 8828 /* Enable Accelerated IO path at driver layer */ 8829 h->acciopath_status = 1; 8830 /* Disable discovery polling.*/ 8831 h->discovery_polling = 0; 8832 8833 8834 /* Turn the interrupts on so we can service requests */ 8835 h->access.set_intr_mask(h, HPSA_INTR_ON); 8836 8837 hpsa_hba_inquiry(h); 8838 8839 h->lastlogicals = kzalloc(sizeof(*(h->lastlogicals)), GFP_KERNEL); 8840 if (!h->lastlogicals) 8841 dev_info(&h->pdev->dev, 8842 "Can't track change to report lun data\n"); 8843 8844 /* hook into SCSI subsystem */ 8845 rc = hpsa_scsi_add_host(h); 8846 if (rc) 8847 goto clean8; /* lastlogicals, perf, sg, cmd, irq, shost, pci, lu, aer/h */ 8848 8849 /* Monitor the controller for firmware lockups */ 8850 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL; 8851 INIT_DELAYED_WORK(&h->monitor_ctlr_work, hpsa_monitor_ctlr_worker); 8852 schedule_delayed_work(&h->monitor_ctlr_work, 8853 h->heartbeat_sample_interval); 8854 INIT_DELAYED_WORK(&h->rescan_ctlr_work, hpsa_rescan_ctlr_worker); 8855 queue_delayed_work(h->rescan_ctlr_wq, &h->rescan_ctlr_work, 8856 h->heartbeat_sample_interval); 8857 INIT_DELAYED_WORK(&h->event_monitor_work, hpsa_event_monitor_worker); 8858 schedule_delayed_work(&h->event_monitor_work, 8859 HPSA_EVENT_MONITOR_INTERVAL); 8860 return 0; 8861 8862 clean8: /* lastlogicals, perf, sg, cmd, irq, shost, pci, lu, aer/h */ 8863 kfree(h->lastlogicals); 8864 clean7: /* perf, sg, cmd, irq, shost, pci, lu, aer/h */ 8865 hpsa_free_performant_mode(h); 8866 h->access.set_intr_mask(h, HPSA_INTR_OFF); 8867 clean6: /* sg, cmd, irq, pci, lockup, wq/aer/h */ 8868 hpsa_free_sg_chain_blocks(h); 8869 clean5: /* cmd, irq, shost, pci, lu, aer/h */ 8870 hpsa_free_cmd_pool(h); 8871 clean4: /* irq, shost, pci, lu, aer/h */ 8872 hpsa_free_irqs(h); 8873 clean3: /* shost, pci, lu, aer/h */ 8874 scsi_host_put(h->scsi_host); 8875 h->scsi_host = NULL; 8876 clean2_5: /* pci, lu, aer/h */ 8877 hpsa_free_pci_init(h); 8878 clean2: /* lu, aer/h */ 8879 if (h->lockup_detected) { 8880 free_percpu(h->lockup_detected); 8881 h->lockup_detected = NULL; 8882 } 8883 clean1: /* wq/aer/h */ 8884 if (h->resubmit_wq) { 8885 destroy_workqueue(h->resubmit_wq); 8886 h->resubmit_wq = NULL; 8887 } 8888 if (h->rescan_ctlr_wq) { 8889 destroy_workqueue(h->rescan_ctlr_wq); 8890 h->rescan_ctlr_wq = NULL; 8891 } 8892 if (h->monitor_ctlr_wq) { 8893 destroy_workqueue(h->monitor_ctlr_wq); 8894 h->monitor_ctlr_wq = NULL; 8895 } 8896 kfree(h); 8897 return rc; 8898 } 8899 8900 static void hpsa_flush_cache(struct ctlr_info *h) 8901 { 8902 char *flush_buf; 8903 struct CommandList *c; 8904 int rc; 8905 8906 if (unlikely(lockup_detected(h))) 8907 return; 8908 flush_buf = kzalloc(4, GFP_KERNEL); 8909 if (!flush_buf) 8910 return; 8911 8912 c = cmd_alloc(h); 8913 8914 if (fill_cmd(c, HPSA_CACHE_FLUSH, h, flush_buf, 4, 0, 8915 RAID_CTLR_LUNID, TYPE_CMD)) { 8916 goto out; 8917 } 8918 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_TO_DEVICE, 8919 DEFAULT_TIMEOUT); 8920 if (rc) 8921 goto out; 8922 if (c->err_info->CommandStatus != 0) 8923 out: 8924 dev_warn(&h->pdev->dev, 8925 "error flushing cache on controller\n"); 8926 cmd_free(h, c); 8927 kfree(flush_buf); 8928 } 8929 8930 /* Make controller gather fresh report lun data each time we 8931 * send down a report luns request 8932 */ 8933 static void hpsa_disable_rld_caching(struct ctlr_info *h) 8934 { 8935 u32 *options; 8936 struct CommandList *c; 8937 int rc; 8938 8939 /* Don't bother trying to set diag options if locked up */ 8940 if (unlikely(h->lockup_detected)) 8941 return; 8942 8943 options = kzalloc(sizeof(*options), GFP_KERNEL); 8944 if (!options) 8945 return; 8946 8947 c = cmd_alloc(h); 8948 8949 /* first, get the current diag options settings */ 8950 if (fill_cmd(c, BMIC_SENSE_DIAG_OPTIONS, h, options, 4, 0, 8951 RAID_CTLR_LUNID, TYPE_CMD)) 8952 goto errout; 8953 8954 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE, 8955 NO_TIMEOUT); 8956 if ((rc != 0) || (c->err_info->CommandStatus != 0)) 8957 goto errout; 8958 8959 /* Now, set the bit for disabling the RLD caching */ 8960 *options |= HPSA_DIAG_OPTS_DISABLE_RLD_CACHING; 8961 8962 if (fill_cmd(c, BMIC_SET_DIAG_OPTIONS, h, options, 4, 0, 8963 RAID_CTLR_LUNID, TYPE_CMD)) 8964 goto errout; 8965 8966 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_TO_DEVICE, 8967 NO_TIMEOUT); 8968 if ((rc != 0) || (c->err_info->CommandStatus != 0)) 8969 goto errout; 8970 8971 /* Now verify that it got set: */ 8972 if (fill_cmd(c, BMIC_SENSE_DIAG_OPTIONS, h, options, 4, 0, 8973 RAID_CTLR_LUNID, TYPE_CMD)) 8974 goto errout; 8975 8976 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE, 8977 NO_TIMEOUT); 8978 if ((rc != 0) || (c->err_info->CommandStatus != 0)) 8979 goto errout; 8980 8981 if (*options & HPSA_DIAG_OPTS_DISABLE_RLD_CACHING) 8982 goto out; 8983 8984 errout: 8985 dev_err(&h->pdev->dev, 8986 "Error: failed to disable report lun data caching.\n"); 8987 out: 8988 cmd_free(h, c); 8989 kfree(options); 8990 } 8991 8992 static void __hpsa_shutdown(struct pci_dev *pdev) 8993 { 8994 struct ctlr_info *h; 8995 8996 h = pci_get_drvdata(pdev); 8997 /* Turn board interrupts off and send the flush cache command 8998 * sendcmd will turn off interrupt, and send the flush... 8999 * To write all data in the battery backed cache to disks 9000 */ 9001 hpsa_flush_cache(h); 9002 h->access.set_intr_mask(h, HPSA_INTR_OFF); 9003 hpsa_free_irqs(h); /* init_one 4 */ 9004 hpsa_disable_interrupt_mode(h); /* pci_init 2 */ 9005 } 9006 9007 static void hpsa_shutdown(struct pci_dev *pdev) 9008 { 9009 __hpsa_shutdown(pdev); 9010 pci_disable_device(pdev); 9011 } 9012 9013 static void hpsa_free_device_info(struct ctlr_info *h) 9014 { 9015 int i; 9016 9017 for (i = 0; i < h->ndevices; i++) { 9018 kfree(h->dev[i]); 9019 h->dev[i] = NULL; 9020 } 9021 } 9022 9023 static void hpsa_remove_one(struct pci_dev *pdev) 9024 { 9025 struct ctlr_info *h; 9026 unsigned long flags; 9027 9028 if (pci_get_drvdata(pdev) == NULL) { 9029 dev_err(&pdev->dev, "unable to remove device\n"); 9030 return; 9031 } 9032 h = pci_get_drvdata(pdev); 9033 9034 /* Get rid of any controller monitoring work items */ 9035 spin_lock_irqsave(&h->lock, flags); 9036 h->remove_in_progress = 1; 9037 spin_unlock_irqrestore(&h->lock, flags); 9038 cancel_delayed_work_sync(&h->monitor_ctlr_work); 9039 cancel_delayed_work_sync(&h->rescan_ctlr_work); 9040 cancel_delayed_work_sync(&h->event_monitor_work); 9041 destroy_workqueue(h->rescan_ctlr_wq); 9042 destroy_workqueue(h->resubmit_wq); 9043 destroy_workqueue(h->monitor_ctlr_wq); 9044 9045 hpsa_delete_sas_host(h); 9046 9047 /* 9048 * Call before disabling interrupts. 9049 * scsi_remove_host can trigger I/O operations especially 9050 * when multipath is enabled. There can be SYNCHRONIZE CACHE 9051 * operations which cannot complete and will hang the system. 9052 */ 9053 if (h->scsi_host) 9054 scsi_remove_host(h->scsi_host); /* init_one 8 */ 9055 /* includes hpsa_free_irqs - init_one 4 */ 9056 /* includes hpsa_disable_interrupt_mode - pci_init 2 */ 9057 __hpsa_shutdown(pdev); 9058 9059 hpsa_free_device_info(h); /* scan */ 9060 9061 kfree(h->hba_inquiry_data); /* init_one 10 */ 9062 h->hba_inquiry_data = NULL; /* init_one 10 */ 9063 hpsa_free_ioaccel2_sg_chain_blocks(h); 9064 hpsa_free_performant_mode(h); /* init_one 7 */ 9065 hpsa_free_sg_chain_blocks(h); /* init_one 6 */ 9066 hpsa_free_cmd_pool(h); /* init_one 5 */ 9067 kfree(h->lastlogicals); 9068 9069 /* hpsa_free_irqs already called via hpsa_shutdown init_one 4 */ 9070 9071 scsi_host_put(h->scsi_host); /* init_one 3 */ 9072 h->scsi_host = NULL; /* init_one 3 */ 9073 9074 /* includes hpsa_disable_interrupt_mode - pci_init 2 */ 9075 hpsa_free_pci_init(h); /* init_one 2.5 */ 9076 9077 free_percpu(h->lockup_detected); /* init_one 2 */ 9078 h->lockup_detected = NULL; /* init_one 2 */ 9079 /* (void) pci_disable_pcie_error_reporting(pdev); */ /* init_one 1 */ 9080 9081 hpda_free_ctlr_info(h); /* init_one 1 */ 9082 } 9083 9084 static int __maybe_unused hpsa_suspend( 9085 __attribute__((unused)) struct device *dev) 9086 { 9087 return -ENOSYS; 9088 } 9089 9090 static int __maybe_unused hpsa_resume 9091 (__attribute__((unused)) struct device *dev) 9092 { 9093 return -ENOSYS; 9094 } 9095 9096 static SIMPLE_DEV_PM_OPS(hpsa_pm_ops, hpsa_suspend, hpsa_resume); 9097 9098 static struct pci_driver hpsa_pci_driver = { 9099 .name = HPSA, 9100 .probe = hpsa_init_one, 9101 .remove = hpsa_remove_one, 9102 .id_table = hpsa_pci_device_id, /* id_table */ 9103 .shutdown = hpsa_shutdown, 9104 .driver.pm = &hpsa_pm_ops, 9105 }; 9106 9107 /* Fill in bucket_map[], given nsgs (the max number of 9108 * scatter gather elements supported) and bucket[], 9109 * which is an array of 8 integers. The bucket[] array 9110 * contains 8 different DMA transfer sizes (in 16 9111 * byte increments) which the controller uses to fetch 9112 * commands. This function fills in bucket_map[], which 9113 * maps a given number of scatter gather elements to one of 9114 * the 8 DMA transfer sizes. The point of it is to allow the 9115 * controller to only do as much DMA as needed to fetch the 9116 * command, with the DMA transfer size encoded in the lower 9117 * bits of the command address. 9118 */ 9119 static void calc_bucket_map(int bucket[], int num_buckets, 9120 int nsgs, int min_blocks, u32 *bucket_map) 9121 { 9122 int i, j, b, size; 9123 9124 /* Note, bucket_map must have nsgs+1 entries. */ 9125 for (i = 0; i <= nsgs; i++) { 9126 /* Compute size of a command with i SG entries */ 9127 size = i + min_blocks; 9128 b = num_buckets; /* Assume the biggest bucket */ 9129 /* Find the bucket that is just big enough */ 9130 for (j = 0; j < num_buckets; j++) { 9131 if (bucket[j] >= size) { 9132 b = j; 9133 break; 9134 } 9135 } 9136 /* for a command with i SG entries, use bucket b. */ 9137 bucket_map[i] = b; 9138 } 9139 } 9140 9141 /* 9142 * return -ENODEV on err, 0 on success (or no action) 9143 * allocates numerous items that must be freed later 9144 */ 9145 static int hpsa_enter_performant_mode(struct ctlr_info *h, u32 trans_support) 9146 { 9147 int i; 9148 unsigned long register_value; 9149 unsigned long transMethod = CFGTBL_Trans_Performant | 9150 (trans_support & CFGTBL_Trans_use_short_tags) | 9151 CFGTBL_Trans_enable_directed_msix | 9152 (trans_support & (CFGTBL_Trans_io_accel1 | 9153 CFGTBL_Trans_io_accel2)); 9154 struct access_method access = SA5_performant_access; 9155 9156 /* This is a bit complicated. There are 8 registers on 9157 * the controller which we write to to tell it 8 different 9158 * sizes of commands which there may be. It's a way of 9159 * reducing the DMA done to fetch each command. Encoded into 9160 * each command's tag are 3 bits which communicate to the controller 9161 * which of the eight sizes that command fits within. The size of 9162 * each command depends on how many scatter gather entries there are. 9163 * Each SG entry requires 16 bytes. The eight registers are programmed 9164 * with the number of 16-byte blocks a command of that size requires. 9165 * The smallest command possible requires 5 such 16 byte blocks. 9166 * the largest command possible requires SG_ENTRIES_IN_CMD + 4 16-byte 9167 * blocks. Note, this only extends to the SG entries contained 9168 * within the command block, and does not extend to chained blocks 9169 * of SG elements. bft[] contains the eight values we write to 9170 * the registers. They are not evenly distributed, but have more 9171 * sizes for small commands, and fewer sizes for larger commands. 9172 */ 9173 int bft[8] = {5, 6, 8, 10, 12, 20, 28, SG_ENTRIES_IN_CMD + 4}; 9174 #define MIN_IOACCEL2_BFT_ENTRY 5 9175 #define HPSA_IOACCEL2_HEADER_SZ 4 9176 int bft2[16] = {MIN_IOACCEL2_BFT_ENTRY, 6, 7, 8, 9, 10, 11, 12, 9177 13, 14, 15, 16, 17, 18, 19, 9178 HPSA_IOACCEL2_HEADER_SZ + IOACCEL2_MAXSGENTRIES}; 9179 BUILD_BUG_ON(ARRAY_SIZE(bft2) != 16); 9180 BUILD_BUG_ON(ARRAY_SIZE(bft) != 8); 9181 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, sg) > 9182 16 * MIN_IOACCEL2_BFT_ENTRY); 9183 BUILD_BUG_ON(sizeof(struct ioaccel2_sg_element) != 16); 9184 BUILD_BUG_ON(28 > SG_ENTRIES_IN_CMD + 4); 9185 /* 5 = 1 s/g entry or 4k 9186 * 6 = 2 s/g entry or 8k 9187 * 8 = 4 s/g entry or 16k 9188 * 10 = 6 s/g entry or 24k 9189 */ 9190 9191 /* If the controller supports either ioaccel method then 9192 * we can also use the RAID stack submit path that does not 9193 * perform the superfluous readl() after each command submission. 9194 */ 9195 if (trans_support & (CFGTBL_Trans_io_accel1 | CFGTBL_Trans_io_accel2)) 9196 access = SA5_performant_access_no_read; 9197 9198 /* Controller spec: zero out this buffer. */ 9199 for (i = 0; i < h->nreply_queues; i++) 9200 memset(h->reply_queue[i].head, 0, h->reply_queue_size); 9201 9202 bft[7] = SG_ENTRIES_IN_CMD + 4; 9203 calc_bucket_map(bft, ARRAY_SIZE(bft), 9204 SG_ENTRIES_IN_CMD, 4, h->blockFetchTable); 9205 for (i = 0; i < 8; i++) 9206 writel(bft[i], &h->transtable->BlockFetch[i]); 9207 9208 /* size of controller ring buffer */ 9209 writel(h->max_commands, &h->transtable->RepQSize); 9210 writel(h->nreply_queues, &h->transtable->RepQCount); 9211 writel(0, &h->transtable->RepQCtrAddrLow32); 9212 writel(0, &h->transtable->RepQCtrAddrHigh32); 9213 9214 for (i = 0; i < h->nreply_queues; i++) { 9215 writel(0, &h->transtable->RepQAddr[i].upper); 9216 writel(h->reply_queue[i].busaddr, 9217 &h->transtable->RepQAddr[i].lower); 9218 } 9219 9220 writel(0, &h->cfgtable->HostWrite.command_pool_addr_hi); 9221 writel(transMethod, &(h->cfgtable->HostWrite.TransportRequest)); 9222 /* 9223 * enable outbound interrupt coalescing in accelerator mode; 9224 */ 9225 if (trans_support & CFGTBL_Trans_io_accel1) { 9226 access = SA5_ioaccel_mode1_access; 9227 writel(10, &h->cfgtable->HostWrite.CoalIntDelay); 9228 writel(4, &h->cfgtable->HostWrite.CoalIntCount); 9229 } else 9230 if (trans_support & CFGTBL_Trans_io_accel2) 9231 access = SA5_ioaccel_mode2_access; 9232 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); 9233 if (hpsa_wait_for_mode_change_ack(h)) { 9234 dev_err(&h->pdev->dev, 9235 "performant mode problem - doorbell timeout\n"); 9236 return -ENODEV; 9237 } 9238 register_value = readl(&(h->cfgtable->TransportActive)); 9239 if (!(register_value & CFGTBL_Trans_Performant)) { 9240 dev_err(&h->pdev->dev, 9241 "performant mode problem - transport not active\n"); 9242 return -ENODEV; 9243 } 9244 /* Change the access methods to the performant access methods */ 9245 h->access = access; 9246 h->transMethod = transMethod; 9247 9248 if (!((trans_support & CFGTBL_Trans_io_accel1) || 9249 (trans_support & CFGTBL_Trans_io_accel2))) 9250 return 0; 9251 9252 if (trans_support & CFGTBL_Trans_io_accel1) { 9253 /* Set up I/O accelerator mode */ 9254 for (i = 0; i < h->nreply_queues; i++) { 9255 writel(i, h->vaddr + IOACCEL_MODE1_REPLY_QUEUE_INDEX); 9256 h->reply_queue[i].current_entry = 9257 readl(h->vaddr + IOACCEL_MODE1_PRODUCER_INDEX); 9258 } 9259 bft[7] = h->ioaccel_maxsg + 8; 9260 calc_bucket_map(bft, ARRAY_SIZE(bft), h->ioaccel_maxsg, 8, 9261 h->ioaccel1_blockFetchTable); 9262 9263 /* initialize all reply queue entries to unused */ 9264 for (i = 0; i < h->nreply_queues; i++) 9265 memset(h->reply_queue[i].head, 9266 (u8) IOACCEL_MODE1_REPLY_UNUSED, 9267 h->reply_queue_size); 9268 9269 /* set all the constant fields in the accelerator command 9270 * frames once at init time to save CPU cycles later. 9271 */ 9272 for (i = 0; i < h->nr_cmds; i++) { 9273 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[i]; 9274 9275 cp->function = IOACCEL1_FUNCTION_SCSIIO; 9276 cp->err_info = (u32) (h->errinfo_pool_dhandle + 9277 (i * sizeof(struct ErrorInfo))); 9278 cp->err_info_len = sizeof(struct ErrorInfo); 9279 cp->sgl_offset = IOACCEL1_SGLOFFSET; 9280 cp->host_context_flags = 9281 cpu_to_le16(IOACCEL1_HCFLAGS_CISS_FORMAT); 9282 cp->timeout_sec = 0; 9283 cp->ReplyQueue = 0; 9284 cp->tag = 9285 cpu_to_le64((i << DIRECT_LOOKUP_SHIFT)); 9286 cp->host_addr = 9287 cpu_to_le64(h->ioaccel_cmd_pool_dhandle + 9288 (i * sizeof(struct io_accel1_cmd))); 9289 } 9290 } else if (trans_support & CFGTBL_Trans_io_accel2) { 9291 u64 cfg_offset, cfg_base_addr_index; 9292 u32 bft2_offset, cfg_base_addr; 9293 9294 hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr, 9295 &cfg_base_addr_index, &cfg_offset); 9296 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, sg) != 64); 9297 bft2[15] = h->ioaccel_maxsg + HPSA_IOACCEL2_HEADER_SZ; 9298 calc_bucket_map(bft2, ARRAY_SIZE(bft2), h->ioaccel_maxsg, 9299 4, h->ioaccel2_blockFetchTable); 9300 bft2_offset = readl(&h->cfgtable->io_accel_request_size_offset); 9301 BUILD_BUG_ON(offsetof(struct CfgTable, 9302 io_accel_request_size_offset) != 0xb8); 9303 h->ioaccel2_bft2_regs = 9304 remap_pci_mem(pci_resource_start(h->pdev, 9305 cfg_base_addr_index) + 9306 cfg_offset + bft2_offset, 9307 ARRAY_SIZE(bft2) * 9308 sizeof(*h->ioaccel2_bft2_regs)); 9309 for (i = 0; i < ARRAY_SIZE(bft2); i++) 9310 writel(bft2[i], &h->ioaccel2_bft2_regs[i]); 9311 } 9312 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); 9313 if (hpsa_wait_for_mode_change_ack(h)) { 9314 dev_err(&h->pdev->dev, 9315 "performant mode problem - enabling ioaccel mode\n"); 9316 return -ENODEV; 9317 } 9318 return 0; 9319 } 9320 9321 /* Free ioaccel1 mode command blocks and block fetch table */ 9322 static void hpsa_free_ioaccel1_cmd_and_bft(struct ctlr_info *h) 9323 { 9324 if (h->ioaccel_cmd_pool) { 9325 dma_free_coherent(&h->pdev->dev, 9326 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool), 9327 h->ioaccel_cmd_pool, 9328 h->ioaccel_cmd_pool_dhandle); 9329 h->ioaccel_cmd_pool = NULL; 9330 h->ioaccel_cmd_pool_dhandle = 0; 9331 } 9332 kfree(h->ioaccel1_blockFetchTable); 9333 h->ioaccel1_blockFetchTable = NULL; 9334 } 9335 9336 /* Allocate ioaccel1 mode command blocks and block fetch table */ 9337 static int hpsa_alloc_ioaccel1_cmd_and_bft(struct ctlr_info *h) 9338 { 9339 h->ioaccel_maxsg = 9340 readl(&(h->cfgtable->io_accel_max_embedded_sg_count)); 9341 if (h->ioaccel_maxsg > IOACCEL1_MAXSGENTRIES) 9342 h->ioaccel_maxsg = IOACCEL1_MAXSGENTRIES; 9343 9344 /* Command structures must be aligned on a 128-byte boundary 9345 * because the 7 lower bits of the address are used by the 9346 * hardware. 9347 */ 9348 BUILD_BUG_ON(sizeof(struct io_accel1_cmd) % 9349 IOACCEL1_COMMANDLIST_ALIGNMENT); 9350 h->ioaccel_cmd_pool = 9351 dma_alloc_coherent(&h->pdev->dev, 9352 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool), 9353 &h->ioaccel_cmd_pool_dhandle, GFP_KERNEL); 9354 9355 h->ioaccel1_blockFetchTable = 9356 kmalloc(((h->ioaccel_maxsg + 1) * 9357 sizeof(u32)), GFP_KERNEL); 9358 9359 if ((h->ioaccel_cmd_pool == NULL) || 9360 (h->ioaccel1_blockFetchTable == NULL)) 9361 goto clean_up; 9362 9363 memset(h->ioaccel_cmd_pool, 0, 9364 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool)); 9365 return 0; 9366 9367 clean_up: 9368 hpsa_free_ioaccel1_cmd_and_bft(h); 9369 return -ENOMEM; 9370 } 9371 9372 /* Free ioaccel2 mode command blocks and block fetch table */ 9373 static void hpsa_free_ioaccel2_cmd_and_bft(struct ctlr_info *h) 9374 { 9375 hpsa_free_ioaccel2_sg_chain_blocks(h); 9376 9377 if (h->ioaccel2_cmd_pool) { 9378 dma_free_coherent(&h->pdev->dev, 9379 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool), 9380 h->ioaccel2_cmd_pool, 9381 h->ioaccel2_cmd_pool_dhandle); 9382 h->ioaccel2_cmd_pool = NULL; 9383 h->ioaccel2_cmd_pool_dhandle = 0; 9384 } 9385 kfree(h->ioaccel2_blockFetchTable); 9386 h->ioaccel2_blockFetchTable = NULL; 9387 } 9388 9389 /* Allocate ioaccel2 mode command blocks and block fetch table */ 9390 static int hpsa_alloc_ioaccel2_cmd_and_bft(struct ctlr_info *h) 9391 { 9392 int rc; 9393 9394 /* Allocate ioaccel2 mode command blocks and block fetch table */ 9395 9396 h->ioaccel_maxsg = 9397 readl(&(h->cfgtable->io_accel_max_embedded_sg_count)); 9398 if (h->ioaccel_maxsg > IOACCEL2_MAXSGENTRIES) 9399 h->ioaccel_maxsg = IOACCEL2_MAXSGENTRIES; 9400 9401 BUILD_BUG_ON(sizeof(struct io_accel2_cmd) % 9402 IOACCEL2_COMMANDLIST_ALIGNMENT); 9403 h->ioaccel2_cmd_pool = 9404 dma_alloc_coherent(&h->pdev->dev, 9405 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool), 9406 &h->ioaccel2_cmd_pool_dhandle, GFP_KERNEL); 9407 9408 h->ioaccel2_blockFetchTable = 9409 kmalloc(((h->ioaccel_maxsg + 1) * 9410 sizeof(u32)), GFP_KERNEL); 9411 9412 if ((h->ioaccel2_cmd_pool == NULL) || 9413 (h->ioaccel2_blockFetchTable == NULL)) { 9414 rc = -ENOMEM; 9415 goto clean_up; 9416 } 9417 9418 rc = hpsa_allocate_ioaccel2_sg_chain_blocks(h); 9419 if (rc) 9420 goto clean_up; 9421 9422 memset(h->ioaccel2_cmd_pool, 0, 9423 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool)); 9424 return 0; 9425 9426 clean_up: 9427 hpsa_free_ioaccel2_cmd_and_bft(h); 9428 return rc; 9429 } 9430 9431 /* Free items allocated by hpsa_put_ctlr_into_performant_mode */ 9432 static void hpsa_free_performant_mode(struct ctlr_info *h) 9433 { 9434 kfree(h->blockFetchTable); 9435 h->blockFetchTable = NULL; 9436 hpsa_free_reply_queues(h); 9437 hpsa_free_ioaccel1_cmd_and_bft(h); 9438 hpsa_free_ioaccel2_cmd_and_bft(h); 9439 } 9440 9441 /* return -ENODEV on error, 0 on success (or no action) 9442 * allocates numerous items that must be freed later 9443 */ 9444 static int hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h) 9445 { 9446 u32 trans_support; 9447 unsigned long transMethod = CFGTBL_Trans_Performant | 9448 CFGTBL_Trans_use_short_tags; 9449 int i, rc; 9450 9451 if (hpsa_simple_mode) 9452 return 0; 9453 9454 trans_support = readl(&(h->cfgtable->TransportSupport)); 9455 if (!(trans_support & PERFORMANT_MODE)) 9456 return 0; 9457 9458 /* Check for I/O accelerator mode support */ 9459 if (trans_support & CFGTBL_Trans_io_accel1) { 9460 transMethod |= CFGTBL_Trans_io_accel1 | 9461 CFGTBL_Trans_enable_directed_msix; 9462 rc = hpsa_alloc_ioaccel1_cmd_and_bft(h); 9463 if (rc) 9464 return rc; 9465 } else if (trans_support & CFGTBL_Trans_io_accel2) { 9466 transMethod |= CFGTBL_Trans_io_accel2 | 9467 CFGTBL_Trans_enable_directed_msix; 9468 rc = hpsa_alloc_ioaccel2_cmd_and_bft(h); 9469 if (rc) 9470 return rc; 9471 } 9472 9473 h->nreply_queues = h->msix_vectors > 0 ? h->msix_vectors : 1; 9474 hpsa_get_max_perf_mode_cmds(h); 9475 /* Performant mode ring buffer and supporting data structures */ 9476 h->reply_queue_size = h->max_commands * sizeof(u64); 9477 9478 for (i = 0; i < h->nreply_queues; i++) { 9479 h->reply_queue[i].head = dma_alloc_coherent(&h->pdev->dev, 9480 h->reply_queue_size, 9481 &h->reply_queue[i].busaddr, 9482 GFP_KERNEL); 9483 if (!h->reply_queue[i].head) { 9484 rc = -ENOMEM; 9485 goto clean1; /* rq, ioaccel */ 9486 } 9487 h->reply_queue[i].size = h->max_commands; 9488 h->reply_queue[i].wraparound = 1; /* spec: init to 1 */ 9489 h->reply_queue[i].current_entry = 0; 9490 } 9491 9492 /* Need a block fetch table for performant mode */ 9493 h->blockFetchTable = kmalloc(((SG_ENTRIES_IN_CMD + 1) * 9494 sizeof(u32)), GFP_KERNEL); 9495 if (!h->blockFetchTable) { 9496 rc = -ENOMEM; 9497 goto clean1; /* rq, ioaccel */ 9498 } 9499 9500 rc = hpsa_enter_performant_mode(h, trans_support); 9501 if (rc) 9502 goto clean2; /* bft, rq, ioaccel */ 9503 return 0; 9504 9505 clean2: /* bft, rq, ioaccel */ 9506 kfree(h->blockFetchTable); 9507 h->blockFetchTable = NULL; 9508 clean1: /* rq, ioaccel */ 9509 hpsa_free_reply_queues(h); 9510 hpsa_free_ioaccel1_cmd_and_bft(h); 9511 hpsa_free_ioaccel2_cmd_and_bft(h); 9512 return rc; 9513 } 9514 9515 static int is_accelerated_cmd(struct CommandList *c) 9516 { 9517 return c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_IOACCEL2; 9518 } 9519 9520 static void hpsa_drain_accel_commands(struct ctlr_info *h) 9521 { 9522 struct CommandList *c = NULL; 9523 int i, accel_cmds_out; 9524 int refcount; 9525 9526 do { /* wait for all outstanding ioaccel commands to drain out */ 9527 accel_cmds_out = 0; 9528 for (i = 0; i < h->nr_cmds; i++) { 9529 c = h->cmd_pool + i; 9530 refcount = atomic_inc_return(&c->refcount); 9531 if (refcount > 1) /* Command is allocated */ 9532 accel_cmds_out += is_accelerated_cmd(c); 9533 cmd_free(h, c); 9534 } 9535 if (accel_cmds_out <= 0) 9536 break; 9537 msleep(100); 9538 } while (1); 9539 } 9540 9541 static struct hpsa_sas_phy *hpsa_alloc_sas_phy( 9542 struct hpsa_sas_port *hpsa_sas_port) 9543 { 9544 struct hpsa_sas_phy *hpsa_sas_phy; 9545 struct sas_phy *phy; 9546 9547 hpsa_sas_phy = kzalloc(sizeof(*hpsa_sas_phy), GFP_KERNEL); 9548 if (!hpsa_sas_phy) 9549 return NULL; 9550 9551 phy = sas_phy_alloc(hpsa_sas_port->parent_node->parent_dev, 9552 hpsa_sas_port->next_phy_index); 9553 if (!phy) { 9554 kfree(hpsa_sas_phy); 9555 return NULL; 9556 } 9557 9558 hpsa_sas_port->next_phy_index++; 9559 hpsa_sas_phy->phy = phy; 9560 hpsa_sas_phy->parent_port = hpsa_sas_port; 9561 9562 return hpsa_sas_phy; 9563 } 9564 9565 static void hpsa_free_sas_phy(struct hpsa_sas_phy *hpsa_sas_phy) 9566 { 9567 struct sas_phy *phy = hpsa_sas_phy->phy; 9568 9569 sas_port_delete_phy(hpsa_sas_phy->parent_port->port, phy); 9570 if (hpsa_sas_phy->added_to_port) 9571 list_del(&hpsa_sas_phy->phy_list_entry); 9572 sas_phy_delete(phy); 9573 kfree(hpsa_sas_phy); 9574 } 9575 9576 static int hpsa_sas_port_add_phy(struct hpsa_sas_phy *hpsa_sas_phy) 9577 { 9578 int rc; 9579 struct hpsa_sas_port *hpsa_sas_port; 9580 struct sas_phy *phy; 9581 struct sas_identify *identify; 9582 9583 hpsa_sas_port = hpsa_sas_phy->parent_port; 9584 phy = hpsa_sas_phy->phy; 9585 9586 identify = &phy->identify; 9587 memset(identify, 0, sizeof(*identify)); 9588 identify->sas_address = hpsa_sas_port->sas_address; 9589 identify->device_type = SAS_END_DEVICE; 9590 identify->initiator_port_protocols = SAS_PROTOCOL_STP; 9591 identify->target_port_protocols = SAS_PROTOCOL_STP; 9592 phy->minimum_linkrate_hw = SAS_LINK_RATE_UNKNOWN; 9593 phy->maximum_linkrate_hw = SAS_LINK_RATE_UNKNOWN; 9594 phy->minimum_linkrate = SAS_LINK_RATE_UNKNOWN; 9595 phy->maximum_linkrate = SAS_LINK_RATE_UNKNOWN; 9596 phy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN; 9597 9598 rc = sas_phy_add(hpsa_sas_phy->phy); 9599 if (rc) 9600 return rc; 9601 9602 sas_port_add_phy(hpsa_sas_port->port, hpsa_sas_phy->phy); 9603 list_add_tail(&hpsa_sas_phy->phy_list_entry, 9604 &hpsa_sas_port->phy_list_head); 9605 hpsa_sas_phy->added_to_port = true; 9606 9607 return 0; 9608 } 9609 9610 static int 9611 hpsa_sas_port_add_rphy(struct hpsa_sas_port *hpsa_sas_port, 9612 struct sas_rphy *rphy) 9613 { 9614 struct sas_identify *identify; 9615 9616 identify = &rphy->identify; 9617 identify->sas_address = hpsa_sas_port->sas_address; 9618 identify->initiator_port_protocols = SAS_PROTOCOL_STP; 9619 identify->target_port_protocols = SAS_PROTOCOL_STP; 9620 9621 return sas_rphy_add(rphy); 9622 } 9623 9624 static struct hpsa_sas_port 9625 *hpsa_alloc_sas_port(struct hpsa_sas_node *hpsa_sas_node, 9626 u64 sas_address) 9627 { 9628 int rc; 9629 struct hpsa_sas_port *hpsa_sas_port; 9630 struct sas_port *port; 9631 9632 hpsa_sas_port = kzalloc(sizeof(*hpsa_sas_port), GFP_KERNEL); 9633 if (!hpsa_sas_port) 9634 return NULL; 9635 9636 INIT_LIST_HEAD(&hpsa_sas_port->phy_list_head); 9637 hpsa_sas_port->parent_node = hpsa_sas_node; 9638 9639 port = sas_port_alloc_num(hpsa_sas_node->parent_dev); 9640 if (!port) 9641 goto free_hpsa_port; 9642 9643 rc = sas_port_add(port); 9644 if (rc) 9645 goto free_sas_port; 9646 9647 hpsa_sas_port->port = port; 9648 hpsa_sas_port->sas_address = sas_address; 9649 list_add_tail(&hpsa_sas_port->port_list_entry, 9650 &hpsa_sas_node->port_list_head); 9651 9652 return hpsa_sas_port; 9653 9654 free_sas_port: 9655 sas_port_free(port); 9656 free_hpsa_port: 9657 kfree(hpsa_sas_port); 9658 9659 return NULL; 9660 } 9661 9662 static void hpsa_free_sas_port(struct hpsa_sas_port *hpsa_sas_port) 9663 { 9664 struct hpsa_sas_phy *hpsa_sas_phy; 9665 struct hpsa_sas_phy *next; 9666 9667 list_for_each_entry_safe(hpsa_sas_phy, next, 9668 &hpsa_sas_port->phy_list_head, phy_list_entry) 9669 hpsa_free_sas_phy(hpsa_sas_phy); 9670 9671 sas_port_delete(hpsa_sas_port->port); 9672 list_del(&hpsa_sas_port->port_list_entry); 9673 kfree(hpsa_sas_port); 9674 } 9675 9676 static struct hpsa_sas_node *hpsa_alloc_sas_node(struct device *parent_dev) 9677 { 9678 struct hpsa_sas_node *hpsa_sas_node; 9679 9680 hpsa_sas_node = kzalloc(sizeof(*hpsa_sas_node), GFP_KERNEL); 9681 if (hpsa_sas_node) { 9682 hpsa_sas_node->parent_dev = parent_dev; 9683 INIT_LIST_HEAD(&hpsa_sas_node->port_list_head); 9684 } 9685 9686 return hpsa_sas_node; 9687 } 9688 9689 static void hpsa_free_sas_node(struct hpsa_sas_node *hpsa_sas_node) 9690 { 9691 struct hpsa_sas_port *hpsa_sas_port; 9692 struct hpsa_sas_port *next; 9693 9694 if (!hpsa_sas_node) 9695 return; 9696 9697 list_for_each_entry_safe(hpsa_sas_port, next, 9698 &hpsa_sas_node->port_list_head, port_list_entry) 9699 hpsa_free_sas_port(hpsa_sas_port); 9700 9701 kfree(hpsa_sas_node); 9702 } 9703 9704 static struct hpsa_scsi_dev_t 9705 *hpsa_find_device_by_sas_rphy(struct ctlr_info *h, 9706 struct sas_rphy *rphy) 9707 { 9708 int i; 9709 struct hpsa_scsi_dev_t *device; 9710 9711 for (i = 0; i < h->ndevices; i++) { 9712 device = h->dev[i]; 9713 if (!device->sas_port) 9714 continue; 9715 if (device->sas_port->rphy == rphy) 9716 return device; 9717 } 9718 9719 return NULL; 9720 } 9721 9722 static int hpsa_add_sas_host(struct ctlr_info *h) 9723 { 9724 int rc; 9725 struct device *parent_dev; 9726 struct hpsa_sas_node *hpsa_sas_node; 9727 struct hpsa_sas_port *hpsa_sas_port; 9728 struct hpsa_sas_phy *hpsa_sas_phy; 9729 9730 parent_dev = &h->scsi_host->shost_dev; 9731 9732 hpsa_sas_node = hpsa_alloc_sas_node(parent_dev); 9733 if (!hpsa_sas_node) 9734 return -ENOMEM; 9735 9736 hpsa_sas_port = hpsa_alloc_sas_port(hpsa_sas_node, h->sas_address); 9737 if (!hpsa_sas_port) { 9738 rc = -ENODEV; 9739 goto free_sas_node; 9740 } 9741 9742 hpsa_sas_phy = hpsa_alloc_sas_phy(hpsa_sas_port); 9743 if (!hpsa_sas_phy) { 9744 rc = -ENODEV; 9745 goto free_sas_port; 9746 } 9747 9748 rc = hpsa_sas_port_add_phy(hpsa_sas_phy); 9749 if (rc) 9750 goto free_sas_phy; 9751 9752 h->sas_host = hpsa_sas_node; 9753 9754 return 0; 9755 9756 free_sas_phy: 9757 hpsa_free_sas_phy(hpsa_sas_phy); 9758 free_sas_port: 9759 hpsa_free_sas_port(hpsa_sas_port); 9760 free_sas_node: 9761 hpsa_free_sas_node(hpsa_sas_node); 9762 9763 return rc; 9764 } 9765 9766 static void hpsa_delete_sas_host(struct ctlr_info *h) 9767 { 9768 hpsa_free_sas_node(h->sas_host); 9769 } 9770 9771 static int hpsa_add_sas_device(struct hpsa_sas_node *hpsa_sas_node, 9772 struct hpsa_scsi_dev_t *device) 9773 { 9774 int rc; 9775 struct hpsa_sas_port *hpsa_sas_port; 9776 struct sas_rphy *rphy; 9777 9778 hpsa_sas_port = hpsa_alloc_sas_port(hpsa_sas_node, device->sas_address); 9779 if (!hpsa_sas_port) 9780 return -ENOMEM; 9781 9782 rphy = sas_end_device_alloc(hpsa_sas_port->port); 9783 if (!rphy) { 9784 rc = -ENODEV; 9785 goto free_sas_port; 9786 } 9787 9788 hpsa_sas_port->rphy = rphy; 9789 device->sas_port = hpsa_sas_port; 9790 9791 rc = hpsa_sas_port_add_rphy(hpsa_sas_port, rphy); 9792 if (rc) 9793 goto free_sas_port; 9794 9795 return 0; 9796 9797 free_sas_port: 9798 hpsa_free_sas_port(hpsa_sas_port); 9799 device->sas_port = NULL; 9800 9801 return rc; 9802 } 9803 9804 static void hpsa_remove_sas_device(struct hpsa_scsi_dev_t *device) 9805 { 9806 if (device->sas_port) { 9807 hpsa_free_sas_port(device->sas_port); 9808 device->sas_port = NULL; 9809 } 9810 } 9811 9812 static int 9813 hpsa_sas_get_linkerrors(struct sas_phy *phy) 9814 { 9815 return 0; 9816 } 9817 9818 static int 9819 hpsa_sas_get_enclosure_identifier(struct sas_rphy *rphy, u64 *identifier) 9820 { 9821 struct Scsi_Host *shost = phy_to_shost(rphy); 9822 struct ctlr_info *h; 9823 struct hpsa_scsi_dev_t *sd; 9824 9825 if (!shost) 9826 return -ENXIO; 9827 9828 h = shost_to_hba(shost); 9829 9830 if (!h) 9831 return -ENXIO; 9832 9833 sd = hpsa_find_device_by_sas_rphy(h, rphy); 9834 if (!sd) 9835 return -ENXIO; 9836 9837 *identifier = sd->eli; 9838 9839 return 0; 9840 } 9841 9842 static int 9843 hpsa_sas_get_bay_identifier(struct sas_rphy *rphy) 9844 { 9845 return -ENXIO; 9846 } 9847 9848 static int 9849 hpsa_sas_phy_reset(struct sas_phy *phy, int hard_reset) 9850 { 9851 return 0; 9852 } 9853 9854 static int 9855 hpsa_sas_phy_enable(struct sas_phy *phy, int enable) 9856 { 9857 return 0; 9858 } 9859 9860 static int 9861 hpsa_sas_phy_setup(struct sas_phy *phy) 9862 { 9863 return 0; 9864 } 9865 9866 static void 9867 hpsa_sas_phy_release(struct sas_phy *phy) 9868 { 9869 } 9870 9871 static int 9872 hpsa_sas_phy_speed(struct sas_phy *phy, struct sas_phy_linkrates *rates) 9873 { 9874 return -EINVAL; 9875 } 9876 9877 static struct sas_function_template hpsa_sas_transport_functions = { 9878 .get_linkerrors = hpsa_sas_get_linkerrors, 9879 .get_enclosure_identifier = hpsa_sas_get_enclosure_identifier, 9880 .get_bay_identifier = hpsa_sas_get_bay_identifier, 9881 .phy_reset = hpsa_sas_phy_reset, 9882 .phy_enable = hpsa_sas_phy_enable, 9883 .phy_setup = hpsa_sas_phy_setup, 9884 .phy_release = hpsa_sas_phy_release, 9885 .set_phy_speed = hpsa_sas_phy_speed, 9886 }; 9887 9888 /* 9889 * This is it. Register the PCI driver information for the cards we control 9890 * the OS will call our registered routines when it finds one of our cards. 9891 */ 9892 static int __init hpsa_init(void) 9893 { 9894 int rc; 9895 9896 hpsa_sas_transport_template = 9897 sas_attach_transport(&hpsa_sas_transport_functions); 9898 if (!hpsa_sas_transport_template) 9899 return -ENODEV; 9900 9901 rc = pci_register_driver(&hpsa_pci_driver); 9902 9903 if (rc) 9904 sas_release_transport(hpsa_sas_transport_template); 9905 9906 return rc; 9907 } 9908 9909 static void __exit hpsa_cleanup(void) 9910 { 9911 pci_unregister_driver(&hpsa_pci_driver); 9912 sas_release_transport(hpsa_sas_transport_template); 9913 } 9914 9915 static void __attribute__((unused)) verify_offsets(void) 9916 { 9917 #define VERIFY_OFFSET(member, offset) \ 9918 BUILD_BUG_ON(offsetof(struct raid_map_data, member) != offset) 9919 9920 VERIFY_OFFSET(structure_size, 0); 9921 VERIFY_OFFSET(volume_blk_size, 4); 9922 VERIFY_OFFSET(volume_blk_cnt, 8); 9923 VERIFY_OFFSET(phys_blk_shift, 16); 9924 VERIFY_OFFSET(parity_rotation_shift, 17); 9925 VERIFY_OFFSET(strip_size, 18); 9926 VERIFY_OFFSET(disk_starting_blk, 20); 9927 VERIFY_OFFSET(disk_blk_cnt, 28); 9928 VERIFY_OFFSET(data_disks_per_row, 36); 9929 VERIFY_OFFSET(metadata_disks_per_row, 38); 9930 VERIFY_OFFSET(row_cnt, 40); 9931 VERIFY_OFFSET(layout_map_count, 42); 9932 VERIFY_OFFSET(flags, 44); 9933 VERIFY_OFFSET(dekindex, 46); 9934 /* VERIFY_OFFSET(reserved, 48 */ 9935 VERIFY_OFFSET(data, 64); 9936 9937 #undef VERIFY_OFFSET 9938 9939 #define VERIFY_OFFSET(member, offset) \ 9940 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, member) != offset) 9941 9942 VERIFY_OFFSET(IU_type, 0); 9943 VERIFY_OFFSET(direction, 1); 9944 VERIFY_OFFSET(reply_queue, 2); 9945 /* VERIFY_OFFSET(reserved1, 3); */ 9946 VERIFY_OFFSET(scsi_nexus, 4); 9947 VERIFY_OFFSET(Tag, 8); 9948 VERIFY_OFFSET(cdb, 16); 9949 VERIFY_OFFSET(cciss_lun, 32); 9950 VERIFY_OFFSET(data_len, 40); 9951 VERIFY_OFFSET(cmd_priority_task_attr, 44); 9952 VERIFY_OFFSET(sg_count, 45); 9953 /* VERIFY_OFFSET(reserved3 */ 9954 VERIFY_OFFSET(err_ptr, 48); 9955 VERIFY_OFFSET(err_len, 56); 9956 /* VERIFY_OFFSET(reserved4 */ 9957 VERIFY_OFFSET(sg, 64); 9958 9959 #undef VERIFY_OFFSET 9960 9961 #define VERIFY_OFFSET(member, offset) \ 9962 BUILD_BUG_ON(offsetof(struct io_accel1_cmd, member) != offset) 9963 9964 VERIFY_OFFSET(dev_handle, 0x00); 9965 VERIFY_OFFSET(reserved1, 0x02); 9966 VERIFY_OFFSET(function, 0x03); 9967 VERIFY_OFFSET(reserved2, 0x04); 9968 VERIFY_OFFSET(err_info, 0x0C); 9969 VERIFY_OFFSET(reserved3, 0x10); 9970 VERIFY_OFFSET(err_info_len, 0x12); 9971 VERIFY_OFFSET(reserved4, 0x13); 9972 VERIFY_OFFSET(sgl_offset, 0x14); 9973 VERIFY_OFFSET(reserved5, 0x15); 9974 VERIFY_OFFSET(transfer_len, 0x1C); 9975 VERIFY_OFFSET(reserved6, 0x20); 9976 VERIFY_OFFSET(io_flags, 0x24); 9977 VERIFY_OFFSET(reserved7, 0x26); 9978 VERIFY_OFFSET(LUN, 0x34); 9979 VERIFY_OFFSET(control, 0x3C); 9980 VERIFY_OFFSET(CDB, 0x40); 9981 VERIFY_OFFSET(reserved8, 0x50); 9982 VERIFY_OFFSET(host_context_flags, 0x60); 9983 VERIFY_OFFSET(timeout_sec, 0x62); 9984 VERIFY_OFFSET(ReplyQueue, 0x64); 9985 VERIFY_OFFSET(reserved9, 0x65); 9986 VERIFY_OFFSET(tag, 0x68); 9987 VERIFY_OFFSET(host_addr, 0x70); 9988 VERIFY_OFFSET(CISS_LUN, 0x78); 9989 VERIFY_OFFSET(SG, 0x78 + 8); 9990 #undef VERIFY_OFFSET 9991 } 9992 9993 module_init(hpsa_init); 9994 module_exit(hpsa_cleanup); 9995