1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Linux MegaRAID driver for SAS based RAID controllers
4 *
5 * Copyright (c) 2003-2013 LSI Corporation
6 * Copyright (c) 2013-2016 Avago Technologies
7 * Copyright (c) 2016-2018 Broadcom Inc.
8 *
9 * Authors: Broadcom Inc.
10 * Sreenivas Bagalkote
11 * Sumant Patro
12 * Bo Yang
13 * Adam Radford
14 * Kashyap Desai <kashyap.desai@broadcom.com>
15 * Sumit Saxena <sumit.saxena@broadcom.com>
16 *
17 * Send feedback to: megaraidlinux.pdl@broadcom.com
18 */
19
20 #include <linux/kernel.h>
21 #include <linux/types.h>
22 #include <linux/pci.h>
23 #include <linux/list.h>
24 #include <linux/moduleparam.h>
25 #include <linux/module.h>
26 #include <linux/spinlock.h>
27 #include <linux/interrupt.h>
28 #include <linux/delay.h>
29 #include <linux/uio.h>
30 #include <linux/slab.h>
31 #include <linux/uaccess.h>
32 #include <asm/unaligned.h>
33 #include <linux/fs.h>
34 #include <linux/compat.h>
35 #include <linux/blkdev.h>
36 #include <linux/mutex.h>
37 #include <linux/poll.h>
38 #include <linux/vmalloc.h>
39 #include <linux/irq_poll.h>
40 #include <linux/blk-mq-pci.h>
41
42 #include <scsi/scsi.h>
43 #include <scsi/scsi_cmnd.h>
44 #include <scsi/scsi_device.h>
45 #include <scsi/scsi_host.h>
46 #include <scsi/scsi_tcq.h>
47 #include <scsi/scsi_dbg.h>
48 #include "megaraid_sas_fusion.h"
49 #include "megaraid_sas.h"
50
51 /*
52 * Number of sectors per IO command
53 * Will be set in megasas_init_mfi if user does not provide
54 */
55 static unsigned int max_sectors;
56 module_param_named(max_sectors, max_sectors, int, 0444);
57 MODULE_PARM_DESC(max_sectors,
58 "Maximum number of sectors per IO command");
59
60 static int msix_disable;
61 module_param(msix_disable, int, 0444);
62 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0");
63
64 static unsigned int msix_vectors;
65 module_param(msix_vectors, int, 0444);
66 MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW");
67
68 static int allow_vf_ioctls;
69 module_param(allow_vf_ioctls, int, 0444);
70 MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0");
71
72 static unsigned int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH;
73 module_param(throttlequeuedepth, int, 0444);
74 MODULE_PARM_DESC(throttlequeuedepth,
75 "Adapter queue depth when throttled due to I/O timeout. Default: 16");
76
77 unsigned int resetwaittime = MEGASAS_RESET_WAIT_TIME;
78 module_param(resetwaittime, int, 0444);
79 MODULE_PARM_DESC(resetwaittime, "Wait time in (1-180s) after I/O timeout before resetting adapter. Default: 180s");
80
81 static int smp_affinity_enable = 1;
82 module_param(smp_affinity_enable, int, 0444);
83 MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disable Default: enable(1)");
84
85 static int rdpq_enable = 1;
86 module_param(rdpq_enable, int, 0444);
87 MODULE_PARM_DESC(rdpq_enable, "Allocate reply queue in chunks for large queue depth enable/disable Default: enable(1)");
88
89 unsigned int dual_qdepth_disable;
90 module_param(dual_qdepth_disable, int, 0444);
91 MODULE_PARM_DESC(dual_qdepth_disable, "Disable dual queue depth feature. Default: 0");
92
93 static unsigned int scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
94 module_param(scmd_timeout, int, 0444);
95 MODULE_PARM_DESC(scmd_timeout, "scsi command timeout (10-90s), default 90s. See megasas_reset_timer.");
96
97 int perf_mode = -1;
98 module_param(perf_mode, int, 0444);
99 MODULE_PARM_DESC(perf_mode, "Performance mode (only for Aero adapters), options:\n\t\t"
100 "0 - balanced: High iops and low latency queues are allocated &\n\t\t"
101 "interrupt coalescing is enabled only on high iops queues\n\t\t"
102 "1 - iops: High iops queues are not allocated &\n\t\t"
103 "interrupt coalescing is enabled on all queues\n\t\t"
104 "2 - latency: High iops queues are not allocated &\n\t\t"
105 "interrupt coalescing is disabled on all queues\n\t\t"
106 "default mode is 'balanced'"
107 );
108
109 int event_log_level = MFI_EVT_CLASS_CRITICAL;
110 module_param(event_log_level, int, 0644);
111 MODULE_PARM_DESC(event_log_level, "Asynchronous event logging level- range is: -2(CLASS_DEBUG) to 4(CLASS_DEAD), Default: 2(CLASS_CRITICAL)");
112
113 unsigned int enable_sdev_max_qd;
114 module_param(enable_sdev_max_qd, int, 0444);
115 MODULE_PARM_DESC(enable_sdev_max_qd, "Enable sdev max qd as can_queue. Default: 0");
116
117 int poll_queues;
118 module_param(poll_queues, int, 0444);
119 MODULE_PARM_DESC(poll_queues, "Number of queues to be use for io_uring poll mode.\n\t\t"
120 "This parameter is effective only if host_tagset_enable=1 &\n\t\t"
121 "It is not applicable for MFI_SERIES. &\n\t\t"
122 "Driver will work in latency mode. &\n\t\t"
123 "High iops queues are not allocated &\n\t\t"
124 );
125
126 int host_tagset_enable = 1;
127 module_param(host_tagset_enable, int, 0444);
128 MODULE_PARM_DESC(host_tagset_enable, "Shared host tagset enable/disable Default: enable(1)");
129
130 MODULE_LICENSE("GPL");
131 MODULE_VERSION(MEGASAS_VERSION);
132 MODULE_AUTHOR("megaraidlinux.pdl@broadcom.com");
133 MODULE_DESCRIPTION("Broadcom MegaRAID SAS Driver");
134
135 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
136 static int megasas_get_pd_list(struct megasas_instance *instance);
137 static int megasas_ld_list_query(struct megasas_instance *instance,
138 u8 query_type);
139 static int megasas_issue_init_mfi(struct megasas_instance *instance);
140 static int megasas_register_aen(struct megasas_instance *instance,
141 u32 seq_num, u32 class_locale_word);
142 static void megasas_get_pd_info(struct megasas_instance *instance,
143 struct scsi_device *sdev);
144 static void
145 megasas_set_ld_removed_by_fw(struct megasas_instance *instance);
146
147 /*
148 * PCI ID table for all supported controllers
149 */
150 static struct pci_device_id megasas_pci_table[] = {
151
152 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
153 /* xscale IOP */
154 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
155 /* ppc IOP */
156 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
157 /* ppc IOP */
158 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
159 /* gen2*/
160 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
161 /* gen2*/
162 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
163 /* skinny*/
164 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
165 /* skinny*/
166 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
167 /* xscale IOP, vega */
168 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
169 /* xscale IOP */
170 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
171 /* Fusion */
172 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)},
173 /* Plasma */
174 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
175 /* Invader */
176 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
177 /* Fury */
178 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER)},
179 /* Intruder */
180 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER_24)},
181 /* Intruder 24 port*/
182 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_52)},
183 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_53)},
184 /* VENTURA */
185 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA)},
186 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER)},
187 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_HARPOON)},
188 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_TOMCAT)},
189 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA_4PORT)},
190 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER_4PORT)},
191 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E1)},
192 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E2)},
193 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E5)},
194 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E6)},
195 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E0)},
196 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E3)},
197 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E4)},
198 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E7)},
199 {}
200 };
201
202 MODULE_DEVICE_TABLE(pci, megasas_pci_table);
203
204 static int megasas_mgmt_majorno;
205 struct megasas_mgmt_info megasas_mgmt_info;
206 static struct fasync_struct *megasas_async_queue;
207 static DEFINE_MUTEX(megasas_async_queue_mutex);
208
209 static int megasas_poll_wait_aen;
210 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
211 static u32 support_poll_for_event;
212 u32 megasas_dbg_lvl;
213 static u32 support_device_change;
214 static bool support_nvme_encapsulation;
215 static bool support_pci_lane_margining;
216
217 /* define lock for aen poll */
218 static DEFINE_SPINLOCK(poll_aen_lock);
219
220 extern struct dentry *megasas_debugfs_root;
221 extern int megasas_blk_mq_poll(struct Scsi_Host *shost, unsigned int queue_num);
222
223 void
224 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
225 u8 alt_status);
226 static u32
227 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance);
228 static int
229 megasas_adp_reset_gen2(struct megasas_instance *instance,
230 struct megasas_register_set __iomem *reg_set);
231 static irqreturn_t megasas_isr(int irq, void *devp);
232 static u32
233 megasas_init_adapter_mfi(struct megasas_instance *instance);
234 u32
235 megasas_build_and_issue_cmd(struct megasas_instance *instance,
236 struct scsi_cmnd *scmd);
237 static void megasas_complete_cmd_dpc(unsigned long instance_addr);
238 int
239 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
240 int seconds);
241 void megasas_fusion_ocr_wq(struct work_struct *work);
242 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
243 int initial);
244 static int
245 megasas_set_dma_mask(struct megasas_instance *instance);
246 static int
247 megasas_alloc_ctrl_mem(struct megasas_instance *instance);
248 static inline void
249 megasas_free_ctrl_mem(struct megasas_instance *instance);
250 static inline int
251 megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance);
252 static inline void
253 megasas_free_ctrl_dma_buffers(struct megasas_instance *instance);
254 static inline void
255 megasas_init_ctrl_params(struct megasas_instance *instance);
256
megasas_readl(struct megasas_instance * instance,const volatile void __iomem * addr)257 u32 megasas_readl(struct megasas_instance *instance,
258 const volatile void __iomem *addr)
259 {
260 u32 i = 0, ret_val;
261 /*
262 * Due to a HW errata in Aero controllers, reads to certain
263 * Fusion registers could intermittently return all zeroes.
264 * This behavior is transient in nature and subsequent reads will
265 * return valid value. As a workaround in driver, retry readl for
266 * up to thirty times until a non-zero value is read.
267 */
268 if (instance->adapter_type == AERO_SERIES) {
269 do {
270 ret_val = readl(addr);
271 i++;
272 } while (ret_val == 0 && i < 30);
273 return ret_val;
274 } else {
275 return readl(addr);
276 }
277 }
278
279 /**
280 * megasas_set_dma_settings - Populate DMA address, length and flags for DCMDs
281 * @instance: Adapter soft state
282 * @dcmd: DCMD frame inside MFI command
283 * @dma_addr: DMA address of buffer to be passed to FW
284 * @dma_len: Length of DMA buffer to be passed to FW
285 * @return: void
286 */
megasas_set_dma_settings(struct megasas_instance * instance,struct megasas_dcmd_frame * dcmd,dma_addr_t dma_addr,u32 dma_len)287 void megasas_set_dma_settings(struct megasas_instance *instance,
288 struct megasas_dcmd_frame *dcmd,
289 dma_addr_t dma_addr, u32 dma_len)
290 {
291 if (instance->consistent_mask_64bit) {
292 dcmd->sgl.sge64[0].phys_addr = cpu_to_le64(dma_addr);
293 dcmd->sgl.sge64[0].length = cpu_to_le32(dma_len);
294 dcmd->flags = cpu_to_le16(dcmd->flags | MFI_FRAME_SGL64);
295
296 } else {
297 dcmd->sgl.sge32[0].phys_addr =
298 cpu_to_le32(lower_32_bits(dma_addr));
299 dcmd->sgl.sge32[0].length = cpu_to_le32(dma_len);
300 dcmd->flags = cpu_to_le16(dcmd->flags);
301 }
302 }
303
304 static void
megasas_issue_dcmd(struct megasas_instance * instance,struct megasas_cmd * cmd)305 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
306 {
307 instance->instancet->fire_cmd(instance,
308 cmd->frame_phys_addr, 0, instance->reg_set);
309 return;
310 }
311
312 /**
313 * megasas_get_cmd - Get a command from the free pool
314 * @instance: Adapter soft state
315 *
316 * Returns a free command from the pool
317 */
megasas_get_cmd(struct megasas_instance * instance)318 struct megasas_cmd *megasas_get_cmd(struct megasas_instance
319 *instance)
320 {
321 unsigned long flags;
322 struct megasas_cmd *cmd = NULL;
323
324 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
325
326 if (!list_empty(&instance->cmd_pool)) {
327 cmd = list_entry((&instance->cmd_pool)->next,
328 struct megasas_cmd, list);
329 list_del_init(&cmd->list);
330 } else {
331 dev_err(&instance->pdev->dev, "Command pool empty!\n");
332 }
333
334 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
335 return cmd;
336 }
337
338 /**
339 * megasas_return_cmd - Return a cmd to free command pool
340 * @instance: Adapter soft state
341 * @cmd: Command packet to be returned to free command pool
342 */
343 void
megasas_return_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd)344 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
345 {
346 unsigned long flags;
347 u32 blk_tags;
348 struct megasas_cmd_fusion *cmd_fusion;
349 struct fusion_context *fusion = instance->ctrl_context;
350
351 /* This flag is used only for fusion adapter.
352 * Wait for Interrupt for Polled mode DCMD
353 */
354 if (cmd->flags & DRV_DCMD_POLLED_MODE)
355 return;
356
357 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
358
359 if (fusion) {
360 blk_tags = instance->max_scsi_cmds + cmd->index;
361 cmd_fusion = fusion->cmd_list[blk_tags];
362 megasas_return_cmd_fusion(instance, cmd_fusion);
363 }
364 cmd->scmd = NULL;
365 cmd->frame_count = 0;
366 cmd->flags = 0;
367 memset(cmd->frame, 0, instance->mfi_frame_size);
368 cmd->frame->io.context = cpu_to_le32(cmd->index);
369 if (!fusion && reset_devices)
370 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
371 list_add(&cmd->list, (&instance->cmd_pool)->next);
372
373 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
374
375 }
376
377 static const char *
format_timestamp(uint32_t timestamp)378 format_timestamp(uint32_t timestamp)
379 {
380 static char buffer[32];
381
382 if ((timestamp & 0xff000000) == 0xff000000)
383 snprintf(buffer, sizeof(buffer), "boot + %us", timestamp &
384 0x00ffffff);
385 else
386 snprintf(buffer, sizeof(buffer), "%us", timestamp);
387 return buffer;
388 }
389
390 static const char *
format_class(int8_t class)391 format_class(int8_t class)
392 {
393 static char buffer[6];
394
395 switch (class) {
396 case MFI_EVT_CLASS_DEBUG:
397 return "debug";
398 case MFI_EVT_CLASS_PROGRESS:
399 return "progress";
400 case MFI_EVT_CLASS_INFO:
401 return "info";
402 case MFI_EVT_CLASS_WARNING:
403 return "WARN";
404 case MFI_EVT_CLASS_CRITICAL:
405 return "CRIT";
406 case MFI_EVT_CLASS_FATAL:
407 return "FATAL";
408 case MFI_EVT_CLASS_DEAD:
409 return "DEAD";
410 default:
411 snprintf(buffer, sizeof(buffer), "%d", class);
412 return buffer;
413 }
414 }
415
416 /**
417 * megasas_decode_evt: Decode FW AEN event and print critical event
418 * for information.
419 * @instance: Adapter soft state
420 */
421 static void
megasas_decode_evt(struct megasas_instance * instance)422 megasas_decode_evt(struct megasas_instance *instance)
423 {
424 struct megasas_evt_detail *evt_detail = instance->evt_detail;
425 union megasas_evt_class_locale class_locale;
426 class_locale.word = le32_to_cpu(evt_detail->cl.word);
427
428 if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
429 (event_log_level > MFI_EVT_CLASS_DEAD)) {
430 printk(KERN_WARNING "megaraid_sas: provided event log level is out of range, setting it to default 2(CLASS_CRITICAL), permissible range is: -2 to 4\n");
431 event_log_level = MFI_EVT_CLASS_CRITICAL;
432 }
433
434 if (class_locale.members.class >= event_log_level)
435 dev_info(&instance->pdev->dev, "%d (%s/0x%04x/%s) - %s\n",
436 le32_to_cpu(evt_detail->seq_num),
437 format_timestamp(le32_to_cpu(evt_detail->time_stamp)),
438 (class_locale.members.locale),
439 format_class(class_locale.members.class),
440 evt_detail->description);
441
442 if (megasas_dbg_lvl & LD_PD_DEBUG)
443 dev_info(&instance->pdev->dev,
444 "evt_detail.args.ld.target_id/index %d/%d\n",
445 evt_detail->args.ld.target_id, evt_detail->args.ld.ld_index);
446
447 }
448
449 /*
450 * The following functions are defined for xscale
451 * (deviceid : 1064R, PERC5) controllers
452 */
453
454 /**
455 * megasas_enable_intr_xscale - Enables interrupts
456 * @instance: Adapter soft state
457 */
458 static inline void
megasas_enable_intr_xscale(struct megasas_instance * instance)459 megasas_enable_intr_xscale(struct megasas_instance *instance)
460 {
461 struct megasas_register_set __iomem *regs;
462
463 regs = instance->reg_set;
464 writel(0, &(regs)->outbound_intr_mask);
465
466 /* Dummy readl to force pci flush */
467 readl(®s->outbound_intr_mask);
468 }
469
470 /**
471 * megasas_disable_intr_xscale -Disables interrupt
472 * @instance: Adapter soft state
473 */
474 static inline void
megasas_disable_intr_xscale(struct megasas_instance * instance)475 megasas_disable_intr_xscale(struct megasas_instance *instance)
476 {
477 struct megasas_register_set __iomem *regs;
478 u32 mask = 0x1f;
479
480 regs = instance->reg_set;
481 writel(mask, ®s->outbound_intr_mask);
482 /* Dummy readl to force pci flush */
483 readl(®s->outbound_intr_mask);
484 }
485
486 /**
487 * megasas_read_fw_status_reg_xscale - returns the current FW status value
488 * @instance: Adapter soft state
489 */
490 static u32
megasas_read_fw_status_reg_xscale(struct megasas_instance * instance)491 megasas_read_fw_status_reg_xscale(struct megasas_instance *instance)
492 {
493 return readl(&instance->reg_set->outbound_msg_0);
494 }
495 /**
496 * megasas_clear_intr_xscale - Check & clear interrupt
497 * @instance: Adapter soft state
498 */
499 static int
megasas_clear_intr_xscale(struct megasas_instance * instance)500 megasas_clear_intr_xscale(struct megasas_instance *instance)
501 {
502 u32 status;
503 u32 mfiStatus = 0;
504 struct megasas_register_set __iomem *regs;
505 regs = instance->reg_set;
506
507 /*
508 * Check if it is our interrupt
509 */
510 status = readl(®s->outbound_intr_status);
511
512 if (status & MFI_OB_INTR_STATUS_MASK)
513 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
514 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
515 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
516
517 /*
518 * Clear the interrupt by writing back the same value
519 */
520 if (mfiStatus)
521 writel(status, ®s->outbound_intr_status);
522
523 /* Dummy readl to force pci flush */
524 readl(®s->outbound_intr_status);
525
526 return mfiStatus;
527 }
528
529 /**
530 * megasas_fire_cmd_xscale - Sends command to the FW
531 * @instance: Adapter soft state
532 * @frame_phys_addr : Physical address of cmd
533 * @frame_count : Number of frames for the command
534 * @regs : MFI register set
535 */
536 static inline void
megasas_fire_cmd_xscale(struct megasas_instance * instance,dma_addr_t frame_phys_addr,u32 frame_count,struct megasas_register_set __iomem * regs)537 megasas_fire_cmd_xscale(struct megasas_instance *instance,
538 dma_addr_t frame_phys_addr,
539 u32 frame_count,
540 struct megasas_register_set __iomem *regs)
541 {
542 unsigned long flags;
543
544 spin_lock_irqsave(&instance->hba_lock, flags);
545 writel((frame_phys_addr >> 3)|(frame_count),
546 &(regs)->inbound_queue_port);
547 spin_unlock_irqrestore(&instance->hba_lock, flags);
548 }
549
550 /**
551 * megasas_adp_reset_xscale - For controller reset
552 * @instance: Adapter soft state
553 * @regs: MFI register set
554 */
555 static int
megasas_adp_reset_xscale(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)556 megasas_adp_reset_xscale(struct megasas_instance *instance,
557 struct megasas_register_set __iomem *regs)
558 {
559 u32 i;
560 u32 pcidata;
561
562 writel(MFI_ADP_RESET, ®s->inbound_doorbell);
563
564 for (i = 0; i < 3; i++)
565 msleep(1000); /* sleep for 3 secs */
566 pcidata = 0;
567 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
568 dev_notice(&instance->pdev->dev, "pcidata = %x\n", pcidata);
569 if (pcidata & 0x2) {
570 dev_notice(&instance->pdev->dev, "mfi 1068 offset read=%x\n", pcidata);
571 pcidata &= ~0x2;
572 pci_write_config_dword(instance->pdev,
573 MFI_1068_PCSR_OFFSET, pcidata);
574
575 for (i = 0; i < 2; i++)
576 msleep(1000); /* need to wait 2 secs again */
577
578 pcidata = 0;
579 pci_read_config_dword(instance->pdev,
580 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
581 dev_notice(&instance->pdev->dev, "1068 offset handshake read=%x\n", pcidata);
582 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
583 dev_notice(&instance->pdev->dev, "1068 offset pcidt=%x\n", pcidata);
584 pcidata = 0;
585 pci_write_config_dword(instance->pdev,
586 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
587 }
588 }
589 return 0;
590 }
591
592 /**
593 * megasas_check_reset_xscale - For controller reset check
594 * @instance: Adapter soft state
595 * @regs: MFI register set
596 */
597 static int
megasas_check_reset_xscale(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)598 megasas_check_reset_xscale(struct megasas_instance *instance,
599 struct megasas_register_set __iomem *regs)
600 {
601 if ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
602 (le32_to_cpu(*instance->consumer) ==
603 MEGASAS_ADPRESET_INPROG_SIGN))
604 return 1;
605 return 0;
606 }
607
608 static struct megasas_instance_template megasas_instance_template_xscale = {
609
610 .fire_cmd = megasas_fire_cmd_xscale,
611 .enable_intr = megasas_enable_intr_xscale,
612 .disable_intr = megasas_disable_intr_xscale,
613 .clear_intr = megasas_clear_intr_xscale,
614 .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
615 .adp_reset = megasas_adp_reset_xscale,
616 .check_reset = megasas_check_reset_xscale,
617 .service_isr = megasas_isr,
618 .tasklet = megasas_complete_cmd_dpc,
619 .init_adapter = megasas_init_adapter_mfi,
620 .build_and_issue_cmd = megasas_build_and_issue_cmd,
621 .issue_dcmd = megasas_issue_dcmd,
622 };
623
624 /*
625 * This is the end of set of functions & definitions specific
626 * to xscale (deviceid : 1064R, PERC5) controllers
627 */
628
629 /*
630 * The following functions are defined for ppc (deviceid : 0x60)
631 * controllers
632 */
633
634 /**
635 * megasas_enable_intr_ppc - Enables interrupts
636 * @instance: Adapter soft state
637 */
638 static inline void
megasas_enable_intr_ppc(struct megasas_instance * instance)639 megasas_enable_intr_ppc(struct megasas_instance *instance)
640 {
641 struct megasas_register_set __iomem *regs;
642
643 regs = instance->reg_set;
644 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
645
646 writel(~0x80000000, &(regs)->outbound_intr_mask);
647
648 /* Dummy readl to force pci flush */
649 readl(®s->outbound_intr_mask);
650 }
651
652 /**
653 * megasas_disable_intr_ppc - Disable interrupt
654 * @instance: Adapter soft state
655 */
656 static inline void
megasas_disable_intr_ppc(struct megasas_instance * instance)657 megasas_disable_intr_ppc(struct megasas_instance *instance)
658 {
659 struct megasas_register_set __iomem *regs;
660 u32 mask = 0xFFFFFFFF;
661
662 regs = instance->reg_set;
663 writel(mask, ®s->outbound_intr_mask);
664 /* Dummy readl to force pci flush */
665 readl(®s->outbound_intr_mask);
666 }
667
668 /**
669 * megasas_read_fw_status_reg_ppc - returns the current FW status value
670 * @instance: Adapter soft state
671 */
672 static u32
megasas_read_fw_status_reg_ppc(struct megasas_instance * instance)673 megasas_read_fw_status_reg_ppc(struct megasas_instance *instance)
674 {
675 return readl(&instance->reg_set->outbound_scratch_pad_0);
676 }
677
678 /**
679 * megasas_clear_intr_ppc - Check & clear interrupt
680 * @instance: Adapter soft state
681 */
682 static int
megasas_clear_intr_ppc(struct megasas_instance * instance)683 megasas_clear_intr_ppc(struct megasas_instance *instance)
684 {
685 u32 status, mfiStatus = 0;
686 struct megasas_register_set __iomem *regs;
687 regs = instance->reg_set;
688
689 /*
690 * Check if it is our interrupt
691 */
692 status = readl(®s->outbound_intr_status);
693
694 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
695 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
696
697 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
698 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
699
700 /*
701 * Clear the interrupt by writing back the same value
702 */
703 writel(status, ®s->outbound_doorbell_clear);
704
705 /* Dummy readl to force pci flush */
706 readl(®s->outbound_doorbell_clear);
707
708 return mfiStatus;
709 }
710
711 /**
712 * megasas_fire_cmd_ppc - Sends command to the FW
713 * @instance: Adapter soft state
714 * @frame_phys_addr: Physical address of cmd
715 * @frame_count: Number of frames for the command
716 * @regs: MFI register set
717 */
718 static inline void
megasas_fire_cmd_ppc(struct megasas_instance * instance,dma_addr_t frame_phys_addr,u32 frame_count,struct megasas_register_set __iomem * regs)719 megasas_fire_cmd_ppc(struct megasas_instance *instance,
720 dma_addr_t frame_phys_addr,
721 u32 frame_count,
722 struct megasas_register_set __iomem *regs)
723 {
724 unsigned long flags;
725
726 spin_lock_irqsave(&instance->hba_lock, flags);
727 writel((frame_phys_addr | (frame_count<<1))|1,
728 &(regs)->inbound_queue_port);
729 spin_unlock_irqrestore(&instance->hba_lock, flags);
730 }
731
732 /**
733 * megasas_check_reset_ppc - For controller reset check
734 * @instance: Adapter soft state
735 * @regs: MFI register set
736 */
737 static int
megasas_check_reset_ppc(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)738 megasas_check_reset_ppc(struct megasas_instance *instance,
739 struct megasas_register_set __iomem *regs)
740 {
741 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
742 return 1;
743
744 return 0;
745 }
746
747 static struct megasas_instance_template megasas_instance_template_ppc = {
748
749 .fire_cmd = megasas_fire_cmd_ppc,
750 .enable_intr = megasas_enable_intr_ppc,
751 .disable_intr = megasas_disable_intr_ppc,
752 .clear_intr = megasas_clear_intr_ppc,
753 .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
754 .adp_reset = megasas_adp_reset_xscale,
755 .check_reset = megasas_check_reset_ppc,
756 .service_isr = megasas_isr,
757 .tasklet = megasas_complete_cmd_dpc,
758 .init_adapter = megasas_init_adapter_mfi,
759 .build_and_issue_cmd = megasas_build_and_issue_cmd,
760 .issue_dcmd = megasas_issue_dcmd,
761 };
762
763 /**
764 * megasas_enable_intr_skinny - Enables interrupts
765 * @instance: Adapter soft state
766 */
767 static inline void
megasas_enable_intr_skinny(struct megasas_instance * instance)768 megasas_enable_intr_skinny(struct megasas_instance *instance)
769 {
770 struct megasas_register_set __iomem *regs;
771
772 regs = instance->reg_set;
773 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
774
775 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
776
777 /* Dummy readl to force pci flush */
778 readl(®s->outbound_intr_mask);
779 }
780
781 /**
782 * megasas_disable_intr_skinny - Disables interrupt
783 * @instance: Adapter soft state
784 */
785 static inline void
megasas_disable_intr_skinny(struct megasas_instance * instance)786 megasas_disable_intr_skinny(struct megasas_instance *instance)
787 {
788 struct megasas_register_set __iomem *regs;
789 u32 mask = 0xFFFFFFFF;
790
791 regs = instance->reg_set;
792 writel(mask, ®s->outbound_intr_mask);
793 /* Dummy readl to force pci flush */
794 readl(®s->outbound_intr_mask);
795 }
796
797 /**
798 * megasas_read_fw_status_reg_skinny - returns the current FW status value
799 * @instance: Adapter soft state
800 */
801 static u32
megasas_read_fw_status_reg_skinny(struct megasas_instance * instance)802 megasas_read_fw_status_reg_skinny(struct megasas_instance *instance)
803 {
804 return readl(&instance->reg_set->outbound_scratch_pad_0);
805 }
806
807 /**
808 * megasas_clear_intr_skinny - Check & clear interrupt
809 * @instance: Adapter soft state
810 */
811 static int
megasas_clear_intr_skinny(struct megasas_instance * instance)812 megasas_clear_intr_skinny(struct megasas_instance *instance)
813 {
814 u32 status;
815 u32 mfiStatus = 0;
816 struct megasas_register_set __iomem *regs;
817 regs = instance->reg_set;
818
819 /*
820 * Check if it is our interrupt
821 */
822 status = readl(®s->outbound_intr_status);
823
824 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
825 return 0;
826 }
827
828 /*
829 * Check if it is our interrupt
830 */
831 if ((megasas_read_fw_status_reg_skinny(instance) & MFI_STATE_MASK) ==
832 MFI_STATE_FAULT) {
833 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
834 } else
835 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
836
837 /*
838 * Clear the interrupt by writing back the same value
839 */
840 writel(status, ®s->outbound_intr_status);
841
842 /*
843 * dummy read to flush PCI
844 */
845 readl(®s->outbound_intr_status);
846
847 return mfiStatus;
848 }
849
850 /**
851 * megasas_fire_cmd_skinny - Sends command to the FW
852 * @instance: Adapter soft state
853 * @frame_phys_addr: Physical address of cmd
854 * @frame_count: Number of frames for the command
855 * @regs: MFI register set
856 */
857 static inline void
megasas_fire_cmd_skinny(struct megasas_instance * instance,dma_addr_t frame_phys_addr,u32 frame_count,struct megasas_register_set __iomem * regs)858 megasas_fire_cmd_skinny(struct megasas_instance *instance,
859 dma_addr_t frame_phys_addr,
860 u32 frame_count,
861 struct megasas_register_set __iomem *regs)
862 {
863 unsigned long flags;
864
865 spin_lock_irqsave(&instance->hba_lock, flags);
866 writel(upper_32_bits(frame_phys_addr),
867 &(regs)->inbound_high_queue_port);
868 writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
869 &(regs)->inbound_low_queue_port);
870 spin_unlock_irqrestore(&instance->hba_lock, flags);
871 }
872
873 /**
874 * megasas_check_reset_skinny - For controller reset check
875 * @instance: Adapter soft state
876 * @regs: MFI register set
877 */
878 static int
megasas_check_reset_skinny(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)879 megasas_check_reset_skinny(struct megasas_instance *instance,
880 struct megasas_register_set __iomem *regs)
881 {
882 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
883 return 1;
884
885 return 0;
886 }
887
888 static struct megasas_instance_template megasas_instance_template_skinny = {
889
890 .fire_cmd = megasas_fire_cmd_skinny,
891 .enable_intr = megasas_enable_intr_skinny,
892 .disable_intr = megasas_disable_intr_skinny,
893 .clear_intr = megasas_clear_intr_skinny,
894 .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
895 .adp_reset = megasas_adp_reset_gen2,
896 .check_reset = megasas_check_reset_skinny,
897 .service_isr = megasas_isr,
898 .tasklet = megasas_complete_cmd_dpc,
899 .init_adapter = megasas_init_adapter_mfi,
900 .build_and_issue_cmd = megasas_build_and_issue_cmd,
901 .issue_dcmd = megasas_issue_dcmd,
902 };
903
904
905 /*
906 * The following functions are defined for gen2 (deviceid : 0x78 0x79)
907 * controllers
908 */
909
910 /**
911 * megasas_enable_intr_gen2 - Enables interrupts
912 * @instance: Adapter soft state
913 */
914 static inline void
megasas_enable_intr_gen2(struct megasas_instance * instance)915 megasas_enable_intr_gen2(struct megasas_instance *instance)
916 {
917 struct megasas_register_set __iomem *regs;
918
919 regs = instance->reg_set;
920 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
921
922 /* write ~0x00000005 (4 & 1) to the intr mask*/
923 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
924
925 /* Dummy readl to force pci flush */
926 readl(®s->outbound_intr_mask);
927 }
928
929 /**
930 * megasas_disable_intr_gen2 - Disables interrupt
931 * @instance: Adapter soft state
932 */
933 static inline void
megasas_disable_intr_gen2(struct megasas_instance * instance)934 megasas_disable_intr_gen2(struct megasas_instance *instance)
935 {
936 struct megasas_register_set __iomem *regs;
937 u32 mask = 0xFFFFFFFF;
938
939 regs = instance->reg_set;
940 writel(mask, ®s->outbound_intr_mask);
941 /* Dummy readl to force pci flush */
942 readl(®s->outbound_intr_mask);
943 }
944
945 /**
946 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
947 * @instance: Adapter soft state
948 */
949 static u32
megasas_read_fw_status_reg_gen2(struct megasas_instance * instance)950 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance)
951 {
952 return readl(&instance->reg_set->outbound_scratch_pad_0);
953 }
954
955 /**
956 * megasas_clear_intr_gen2 - Check & clear interrupt
957 * @instance: Adapter soft state
958 */
959 static int
megasas_clear_intr_gen2(struct megasas_instance * instance)960 megasas_clear_intr_gen2(struct megasas_instance *instance)
961 {
962 u32 status;
963 u32 mfiStatus = 0;
964 struct megasas_register_set __iomem *regs;
965 regs = instance->reg_set;
966
967 /*
968 * Check if it is our interrupt
969 */
970 status = readl(®s->outbound_intr_status);
971
972 if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
973 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
974 }
975 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
976 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
977 }
978
979 /*
980 * Clear the interrupt by writing back the same value
981 */
982 if (mfiStatus)
983 writel(status, ®s->outbound_doorbell_clear);
984
985 /* Dummy readl to force pci flush */
986 readl(®s->outbound_intr_status);
987
988 return mfiStatus;
989 }
990
991 /**
992 * megasas_fire_cmd_gen2 - Sends command to the FW
993 * @instance: Adapter soft state
994 * @frame_phys_addr: Physical address of cmd
995 * @frame_count: Number of frames for the command
996 * @regs: MFI register set
997 */
998 static inline void
megasas_fire_cmd_gen2(struct megasas_instance * instance,dma_addr_t frame_phys_addr,u32 frame_count,struct megasas_register_set __iomem * regs)999 megasas_fire_cmd_gen2(struct megasas_instance *instance,
1000 dma_addr_t frame_phys_addr,
1001 u32 frame_count,
1002 struct megasas_register_set __iomem *regs)
1003 {
1004 unsigned long flags;
1005
1006 spin_lock_irqsave(&instance->hba_lock, flags);
1007 writel((frame_phys_addr | (frame_count<<1))|1,
1008 &(regs)->inbound_queue_port);
1009 spin_unlock_irqrestore(&instance->hba_lock, flags);
1010 }
1011
1012 /**
1013 * megasas_adp_reset_gen2 - For controller reset
1014 * @instance: Adapter soft state
1015 * @reg_set: MFI register set
1016 */
1017 static int
megasas_adp_reset_gen2(struct megasas_instance * instance,struct megasas_register_set __iomem * reg_set)1018 megasas_adp_reset_gen2(struct megasas_instance *instance,
1019 struct megasas_register_set __iomem *reg_set)
1020 {
1021 u32 retry = 0 ;
1022 u32 HostDiag;
1023 u32 __iomem *seq_offset = ®_set->seq_offset;
1024 u32 __iomem *hostdiag_offset = ®_set->host_diag;
1025
1026 if (instance->instancet == &megasas_instance_template_skinny) {
1027 seq_offset = ®_set->fusion_seq_offset;
1028 hostdiag_offset = ®_set->fusion_host_diag;
1029 }
1030
1031 writel(0, seq_offset);
1032 writel(4, seq_offset);
1033 writel(0xb, seq_offset);
1034 writel(2, seq_offset);
1035 writel(7, seq_offset);
1036 writel(0xd, seq_offset);
1037
1038 msleep(1000);
1039
1040 HostDiag = (u32)readl(hostdiag_offset);
1041
1042 while (!(HostDiag & DIAG_WRITE_ENABLE)) {
1043 msleep(100);
1044 HostDiag = (u32)readl(hostdiag_offset);
1045 dev_notice(&instance->pdev->dev, "RESETGEN2: retry=%x, hostdiag=%x\n",
1046 retry, HostDiag);
1047
1048 if (retry++ >= 100)
1049 return 1;
1050
1051 }
1052
1053 dev_notice(&instance->pdev->dev, "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
1054
1055 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
1056
1057 ssleep(10);
1058
1059 HostDiag = (u32)readl(hostdiag_offset);
1060 while (HostDiag & DIAG_RESET_ADAPTER) {
1061 msleep(100);
1062 HostDiag = (u32)readl(hostdiag_offset);
1063 dev_notice(&instance->pdev->dev, "RESET_GEN2: retry=%x, hostdiag=%x\n",
1064 retry, HostDiag);
1065
1066 if (retry++ >= 1000)
1067 return 1;
1068
1069 }
1070 return 0;
1071 }
1072
1073 /**
1074 * megasas_check_reset_gen2 - For controller reset check
1075 * @instance: Adapter soft state
1076 * @regs: MFI register set
1077 */
1078 static int
megasas_check_reset_gen2(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)1079 megasas_check_reset_gen2(struct megasas_instance *instance,
1080 struct megasas_register_set __iomem *regs)
1081 {
1082 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1083 return 1;
1084
1085 return 0;
1086 }
1087
1088 static struct megasas_instance_template megasas_instance_template_gen2 = {
1089
1090 .fire_cmd = megasas_fire_cmd_gen2,
1091 .enable_intr = megasas_enable_intr_gen2,
1092 .disable_intr = megasas_disable_intr_gen2,
1093 .clear_intr = megasas_clear_intr_gen2,
1094 .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
1095 .adp_reset = megasas_adp_reset_gen2,
1096 .check_reset = megasas_check_reset_gen2,
1097 .service_isr = megasas_isr,
1098 .tasklet = megasas_complete_cmd_dpc,
1099 .init_adapter = megasas_init_adapter_mfi,
1100 .build_and_issue_cmd = megasas_build_and_issue_cmd,
1101 .issue_dcmd = megasas_issue_dcmd,
1102 };
1103
1104 /*
1105 * This is the end of set of functions & definitions
1106 * specific to gen2 (deviceid : 0x78, 0x79) controllers
1107 */
1108
1109 /*
1110 * Template added for TB (Fusion)
1111 */
1112 extern struct megasas_instance_template megasas_instance_template_fusion;
1113
1114 /**
1115 * megasas_issue_polled - Issues a polling command
1116 * @instance: Adapter soft state
1117 * @cmd: Command packet to be issued
1118 *
1119 * For polling, MFI requires the cmd_status to be set to MFI_STAT_INVALID_STATUS before posting.
1120 */
1121 int
megasas_issue_polled(struct megasas_instance * instance,struct megasas_cmd * cmd)1122 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
1123 {
1124 struct megasas_header *frame_hdr = &cmd->frame->hdr;
1125
1126 frame_hdr->cmd_status = MFI_STAT_INVALID_STATUS;
1127 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
1128
1129 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1130 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1131 __func__, __LINE__);
1132 return DCMD_INIT;
1133 }
1134
1135 instance->instancet->issue_dcmd(instance, cmd);
1136
1137 return wait_and_poll(instance, cmd, instance->requestorId ?
1138 MEGASAS_ROUTINE_WAIT_TIME_VF : MFI_IO_TIMEOUT_SECS);
1139 }
1140
1141 /**
1142 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds
1143 * @instance: Adapter soft state
1144 * @cmd: Command to be issued
1145 * @timeout: Timeout in seconds
1146 *
1147 * This function waits on an event for the command to be returned from ISR.
1148 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1149 * Used to issue ioctl commands.
1150 */
1151 int
megasas_issue_blocked_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd,int timeout)1152 megasas_issue_blocked_cmd(struct megasas_instance *instance,
1153 struct megasas_cmd *cmd, int timeout)
1154 {
1155 int ret = 0;
1156 cmd->cmd_status_drv = DCMD_INIT;
1157
1158 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1159 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1160 __func__, __LINE__);
1161 return DCMD_INIT;
1162 }
1163
1164 instance->instancet->issue_dcmd(instance, cmd);
1165
1166 if (timeout) {
1167 ret = wait_event_timeout(instance->int_cmd_wait_q,
1168 cmd->cmd_status_drv != DCMD_INIT, timeout * HZ);
1169 if (!ret) {
1170 dev_err(&instance->pdev->dev,
1171 "DCMD(opcode: 0x%x) is timed out, func:%s\n",
1172 cmd->frame->dcmd.opcode, __func__);
1173 return DCMD_TIMEOUT;
1174 }
1175 } else
1176 wait_event(instance->int_cmd_wait_q,
1177 cmd->cmd_status_drv != DCMD_INIT);
1178
1179 return cmd->cmd_status_drv;
1180 }
1181
1182 /**
1183 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd
1184 * @instance: Adapter soft state
1185 * @cmd_to_abort: Previously issued cmd to be aborted
1186 * @timeout: Timeout in seconds
1187 *
1188 * MFI firmware can abort previously issued AEN comamnd (automatic event
1189 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
1190 * cmd and waits for return status.
1191 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1192 */
1193 static int
megasas_issue_blocked_abort_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd_to_abort,int timeout)1194 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
1195 struct megasas_cmd *cmd_to_abort, int timeout)
1196 {
1197 struct megasas_cmd *cmd;
1198 struct megasas_abort_frame *abort_fr;
1199 int ret = 0;
1200 u32 opcode;
1201
1202 cmd = megasas_get_cmd(instance);
1203
1204 if (!cmd)
1205 return -1;
1206
1207 abort_fr = &cmd->frame->abort;
1208
1209 /*
1210 * Prepare and issue the abort frame
1211 */
1212 abort_fr->cmd = MFI_CMD_ABORT;
1213 abort_fr->cmd_status = MFI_STAT_INVALID_STATUS;
1214 abort_fr->flags = cpu_to_le16(0);
1215 abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
1216 abort_fr->abort_mfi_phys_addr_lo =
1217 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
1218 abort_fr->abort_mfi_phys_addr_hi =
1219 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
1220
1221 cmd->sync_cmd = 1;
1222 cmd->cmd_status_drv = DCMD_INIT;
1223
1224 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1225 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1226 __func__, __LINE__);
1227 return DCMD_INIT;
1228 }
1229
1230 instance->instancet->issue_dcmd(instance, cmd);
1231
1232 if (timeout) {
1233 ret = wait_event_timeout(instance->abort_cmd_wait_q,
1234 cmd->cmd_status_drv != DCMD_INIT, timeout * HZ);
1235 if (!ret) {
1236 opcode = cmd_to_abort->frame->dcmd.opcode;
1237 dev_err(&instance->pdev->dev,
1238 "Abort(to be aborted DCMD opcode: 0x%x) is timed out func:%s\n",
1239 opcode, __func__);
1240 return DCMD_TIMEOUT;
1241 }
1242 } else
1243 wait_event(instance->abort_cmd_wait_q,
1244 cmd->cmd_status_drv != DCMD_INIT);
1245
1246 cmd->sync_cmd = 0;
1247
1248 megasas_return_cmd(instance, cmd);
1249 return cmd->cmd_status_drv;
1250 }
1251
1252 /**
1253 * megasas_make_sgl32 - Prepares 32-bit SGL
1254 * @instance: Adapter soft state
1255 * @scp: SCSI command from the mid-layer
1256 * @mfi_sgl: SGL to be filled in
1257 *
1258 * If successful, this function returns the number of SG elements. Otherwise,
1259 * it returnes -1.
1260 */
1261 static int
megasas_make_sgl32(struct megasas_instance * instance,struct scsi_cmnd * scp,union megasas_sgl * mfi_sgl)1262 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
1263 union megasas_sgl *mfi_sgl)
1264 {
1265 int i;
1266 int sge_count;
1267 struct scatterlist *os_sgl;
1268
1269 sge_count = scsi_dma_map(scp);
1270 BUG_ON(sge_count < 0);
1271
1272 if (sge_count) {
1273 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1274 mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1275 mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
1276 }
1277 }
1278 return sge_count;
1279 }
1280
1281 /**
1282 * megasas_make_sgl64 - Prepares 64-bit SGL
1283 * @instance: Adapter soft state
1284 * @scp: SCSI command from the mid-layer
1285 * @mfi_sgl: SGL to be filled in
1286 *
1287 * If successful, this function returns the number of SG elements. Otherwise,
1288 * it returnes -1.
1289 */
1290 static int
megasas_make_sgl64(struct megasas_instance * instance,struct scsi_cmnd * scp,union megasas_sgl * mfi_sgl)1291 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1292 union megasas_sgl *mfi_sgl)
1293 {
1294 int i;
1295 int sge_count;
1296 struct scatterlist *os_sgl;
1297
1298 sge_count = scsi_dma_map(scp);
1299 BUG_ON(sge_count < 0);
1300
1301 if (sge_count) {
1302 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1303 mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1304 mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
1305 }
1306 }
1307 return sge_count;
1308 }
1309
1310 /**
1311 * megasas_make_sgl_skinny - Prepares IEEE SGL
1312 * @instance: Adapter soft state
1313 * @scp: SCSI command from the mid-layer
1314 * @mfi_sgl: SGL to be filled in
1315 *
1316 * If successful, this function returns the number of SG elements. Otherwise,
1317 * it returnes -1.
1318 */
1319 static int
megasas_make_sgl_skinny(struct megasas_instance * instance,struct scsi_cmnd * scp,union megasas_sgl * mfi_sgl)1320 megasas_make_sgl_skinny(struct megasas_instance *instance,
1321 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1322 {
1323 int i;
1324 int sge_count;
1325 struct scatterlist *os_sgl;
1326
1327 sge_count = scsi_dma_map(scp);
1328
1329 if (sge_count) {
1330 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1331 mfi_sgl->sge_skinny[i].length =
1332 cpu_to_le32(sg_dma_len(os_sgl));
1333 mfi_sgl->sge_skinny[i].phys_addr =
1334 cpu_to_le64(sg_dma_address(os_sgl));
1335 mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
1336 }
1337 }
1338 return sge_count;
1339 }
1340
1341 /**
1342 * megasas_get_frame_count - Computes the number of frames
1343 * @frame_type : type of frame- io or pthru frame
1344 * @sge_count : number of sg elements
1345 *
1346 * Returns the number of frames required for numnber of sge's (sge_count)
1347 */
1348
megasas_get_frame_count(struct megasas_instance * instance,u8 sge_count,u8 frame_type)1349 static u32 megasas_get_frame_count(struct megasas_instance *instance,
1350 u8 sge_count, u8 frame_type)
1351 {
1352 int num_cnt;
1353 int sge_bytes;
1354 u32 sge_sz;
1355 u32 frame_count = 0;
1356
1357 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1358 sizeof(struct megasas_sge32);
1359
1360 if (instance->flag_ieee) {
1361 sge_sz = sizeof(struct megasas_sge_skinny);
1362 }
1363
1364 /*
1365 * Main frame can contain 2 SGEs for 64-bit SGLs and
1366 * 3 SGEs for 32-bit SGLs for ldio &
1367 * 1 SGEs for 64-bit SGLs and
1368 * 2 SGEs for 32-bit SGLs for pthru frame
1369 */
1370 if (unlikely(frame_type == PTHRU_FRAME)) {
1371 if (instance->flag_ieee == 1) {
1372 num_cnt = sge_count - 1;
1373 } else if (IS_DMA64)
1374 num_cnt = sge_count - 1;
1375 else
1376 num_cnt = sge_count - 2;
1377 } else {
1378 if (instance->flag_ieee == 1) {
1379 num_cnt = sge_count - 1;
1380 } else if (IS_DMA64)
1381 num_cnt = sge_count - 2;
1382 else
1383 num_cnt = sge_count - 3;
1384 }
1385
1386 if (num_cnt > 0) {
1387 sge_bytes = sge_sz * num_cnt;
1388
1389 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1390 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1391 }
1392 /* Main frame */
1393 frame_count += 1;
1394
1395 if (frame_count > 7)
1396 frame_count = 8;
1397 return frame_count;
1398 }
1399
1400 /**
1401 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1402 * @instance: Adapter soft state
1403 * @scp: SCSI command
1404 * @cmd: Command to be prepared in
1405 *
1406 * This function prepares CDB commands. These are typcially pass-through
1407 * commands to the devices.
1408 */
1409 static int
megasas_build_dcdb(struct megasas_instance * instance,struct scsi_cmnd * scp,struct megasas_cmd * cmd)1410 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1411 struct megasas_cmd *cmd)
1412 {
1413 u32 is_logical;
1414 u32 device_id;
1415 u16 flags = 0;
1416 struct megasas_pthru_frame *pthru;
1417
1418 is_logical = MEGASAS_IS_LOGICAL(scp->device);
1419 device_id = MEGASAS_DEV_INDEX(scp);
1420 pthru = (struct megasas_pthru_frame *)cmd->frame;
1421
1422 if (scp->sc_data_direction == DMA_TO_DEVICE)
1423 flags = MFI_FRAME_DIR_WRITE;
1424 else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1425 flags = MFI_FRAME_DIR_READ;
1426 else if (scp->sc_data_direction == DMA_NONE)
1427 flags = MFI_FRAME_DIR_NONE;
1428
1429 if (instance->flag_ieee == 1) {
1430 flags |= MFI_FRAME_IEEE;
1431 }
1432
1433 /*
1434 * Prepare the DCDB frame
1435 */
1436 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1437 pthru->cmd_status = 0x0;
1438 pthru->scsi_status = 0x0;
1439 pthru->target_id = device_id;
1440 pthru->lun = scp->device->lun;
1441 pthru->cdb_len = scp->cmd_len;
1442 pthru->timeout = 0;
1443 pthru->pad_0 = 0;
1444 pthru->flags = cpu_to_le16(flags);
1445 pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
1446
1447 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1448
1449 /*
1450 * If the command is for the tape device, set the
1451 * pthru timeout to the os layer timeout value.
1452 */
1453 if (scp->device->type == TYPE_TAPE) {
1454 if (scsi_cmd_to_rq(scp)->timeout / HZ > 0xFFFF)
1455 pthru->timeout = cpu_to_le16(0xFFFF);
1456 else
1457 pthru->timeout = cpu_to_le16(scsi_cmd_to_rq(scp)->timeout / HZ);
1458 }
1459
1460 /*
1461 * Construct SGL
1462 */
1463 if (instance->flag_ieee == 1) {
1464 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1465 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1466 &pthru->sgl);
1467 } else if (IS_DMA64) {
1468 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1469 pthru->sge_count = megasas_make_sgl64(instance, scp,
1470 &pthru->sgl);
1471 } else
1472 pthru->sge_count = megasas_make_sgl32(instance, scp,
1473 &pthru->sgl);
1474
1475 if (pthru->sge_count > instance->max_num_sge) {
1476 dev_err(&instance->pdev->dev, "DCDB too many SGE NUM=%x\n",
1477 pthru->sge_count);
1478 return 0;
1479 }
1480
1481 /*
1482 * Sense info specific
1483 */
1484 pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1485 pthru->sense_buf_phys_addr_hi =
1486 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
1487 pthru->sense_buf_phys_addr_lo =
1488 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
1489
1490 /*
1491 * Compute the total number of frames this command consumes. FW uses
1492 * this number to pull sufficient number of frames from host memory.
1493 */
1494 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1495 PTHRU_FRAME);
1496
1497 return cmd->frame_count;
1498 }
1499
1500 /**
1501 * megasas_build_ldio - Prepares IOs to logical devices
1502 * @instance: Adapter soft state
1503 * @scp: SCSI command
1504 * @cmd: Command to be prepared
1505 *
1506 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1507 */
1508 static int
megasas_build_ldio(struct megasas_instance * instance,struct scsi_cmnd * scp,struct megasas_cmd * cmd)1509 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1510 struct megasas_cmd *cmd)
1511 {
1512 u32 device_id;
1513 u8 sc = scp->cmnd[0];
1514 u16 flags = 0;
1515 struct megasas_io_frame *ldio;
1516
1517 device_id = MEGASAS_DEV_INDEX(scp);
1518 ldio = (struct megasas_io_frame *)cmd->frame;
1519
1520 if (scp->sc_data_direction == DMA_TO_DEVICE)
1521 flags = MFI_FRAME_DIR_WRITE;
1522 else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1523 flags = MFI_FRAME_DIR_READ;
1524
1525 if (instance->flag_ieee == 1) {
1526 flags |= MFI_FRAME_IEEE;
1527 }
1528
1529 /*
1530 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1531 */
1532 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1533 ldio->cmd_status = 0x0;
1534 ldio->scsi_status = 0x0;
1535 ldio->target_id = device_id;
1536 ldio->timeout = 0;
1537 ldio->reserved_0 = 0;
1538 ldio->pad_0 = 0;
1539 ldio->flags = cpu_to_le16(flags);
1540 ldio->start_lba_hi = 0;
1541 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1542
1543 /*
1544 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1545 */
1546 if (scp->cmd_len == 6) {
1547 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
1548 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
1549 ((u32) scp->cmnd[2] << 8) |
1550 (u32) scp->cmnd[3]);
1551
1552 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
1553 }
1554
1555 /*
1556 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1557 */
1558 else if (scp->cmd_len == 10) {
1559 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
1560 ((u32) scp->cmnd[7] << 8));
1561 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1562 ((u32) scp->cmnd[3] << 16) |
1563 ((u32) scp->cmnd[4] << 8) |
1564 (u32) scp->cmnd[5]);
1565 }
1566
1567 /*
1568 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1569 */
1570 else if (scp->cmd_len == 12) {
1571 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1572 ((u32) scp->cmnd[7] << 16) |
1573 ((u32) scp->cmnd[8] << 8) |
1574 (u32) scp->cmnd[9]);
1575
1576 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1577 ((u32) scp->cmnd[3] << 16) |
1578 ((u32) scp->cmnd[4] << 8) |
1579 (u32) scp->cmnd[5]);
1580 }
1581
1582 /*
1583 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1584 */
1585 else if (scp->cmd_len == 16) {
1586 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
1587 ((u32) scp->cmnd[11] << 16) |
1588 ((u32) scp->cmnd[12] << 8) |
1589 (u32) scp->cmnd[13]);
1590
1591 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1592 ((u32) scp->cmnd[7] << 16) |
1593 ((u32) scp->cmnd[8] << 8) |
1594 (u32) scp->cmnd[9]);
1595
1596 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1597 ((u32) scp->cmnd[3] << 16) |
1598 ((u32) scp->cmnd[4] << 8) |
1599 (u32) scp->cmnd[5]);
1600
1601 }
1602
1603 /*
1604 * Construct SGL
1605 */
1606 if (instance->flag_ieee) {
1607 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1608 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1609 &ldio->sgl);
1610 } else if (IS_DMA64) {
1611 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1612 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1613 } else
1614 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1615
1616 if (ldio->sge_count > instance->max_num_sge) {
1617 dev_err(&instance->pdev->dev, "build_ld_io: sge_count = %x\n",
1618 ldio->sge_count);
1619 return 0;
1620 }
1621
1622 /*
1623 * Sense info specific
1624 */
1625 ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1626 ldio->sense_buf_phys_addr_hi = 0;
1627 ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
1628
1629 /*
1630 * Compute the total number of frames this command consumes. FW uses
1631 * this number to pull sufficient number of frames from host memory.
1632 */
1633 cmd->frame_count = megasas_get_frame_count(instance,
1634 ldio->sge_count, IO_FRAME);
1635
1636 return cmd->frame_count;
1637 }
1638
1639 /**
1640 * megasas_cmd_type - Checks if the cmd is for logical drive/sysPD
1641 * and whether it's RW or non RW
1642 * @cmd: SCSI command
1643 *
1644 */
megasas_cmd_type(struct scsi_cmnd * cmd)1645 inline int megasas_cmd_type(struct scsi_cmnd *cmd)
1646 {
1647 int ret;
1648
1649 switch (cmd->cmnd[0]) {
1650 case READ_10:
1651 case WRITE_10:
1652 case READ_12:
1653 case WRITE_12:
1654 case READ_6:
1655 case WRITE_6:
1656 case READ_16:
1657 case WRITE_16:
1658 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1659 READ_WRITE_LDIO : READ_WRITE_SYSPDIO;
1660 break;
1661 default:
1662 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1663 NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO;
1664 }
1665 return ret;
1666 }
1667
1668 /**
1669 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds
1670 * in FW
1671 * @instance: Adapter soft state
1672 */
1673 static inline void
megasas_dump_pending_frames(struct megasas_instance * instance)1674 megasas_dump_pending_frames(struct megasas_instance *instance)
1675 {
1676 struct megasas_cmd *cmd;
1677 int i,n;
1678 union megasas_sgl *mfi_sgl;
1679 struct megasas_io_frame *ldio;
1680 struct megasas_pthru_frame *pthru;
1681 u32 sgcount;
1682 u16 max_cmd = instance->max_fw_cmds;
1683
1684 dev_err(&instance->pdev->dev, "[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1685 dev_err(&instance->pdev->dev, "[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1686 if (IS_DMA64)
1687 dev_err(&instance->pdev->dev, "[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1688 else
1689 dev_err(&instance->pdev->dev, "[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1690
1691 dev_err(&instance->pdev->dev, "[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1692 for (i = 0; i < max_cmd; i++) {
1693 cmd = instance->cmd_list[i];
1694 if (!cmd->scmd)
1695 continue;
1696 dev_err(&instance->pdev->dev, "[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1697 if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) {
1698 ldio = (struct megasas_io_frame *)cmd->frame;
1699 mfi_sgl = &ldio->sgl;
1700 sgcount = ldio->sge_count;
1701 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1702 " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1703 instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
1704 le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
1705 le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
1706 } else {
1707 pthru = (struct megasas_pthru_frame *) cmd->frame;
1708 mfi_sgl = &pthru->sgl;
1709 sgcount = pthru->sge_count;
1710 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1711 "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1712 instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
1713 pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
1714 le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
1715 }
1716 if (megasas_dbg_lvl & MEGASAS_DBG_LVL) {
1717 for (n = 0; n < sgcount; n++) {
1718 if (IS_DMA64)
1719 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%llx\n",
1720 le32_to_cpu(mfi_sgl->sge64[n].length),
1721 le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
1722 else
1723 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%x\n",
1724 le32_to_cpu(mfi_sgl->sge32[n].length),
1725 le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
1726 }
1727 }
1728 } /*for max_cmd*/
1729 dev_err(&instance->pdev->dev, "[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1730 for (i = 0; i < max_cmd; i++) {
1731
1732 cmd = instance->cmd_list[i];
1733
1734 if (cmd->sync_cmd == 1)
1735 dev_err(&instance->pdev->dev, "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1736 }
1737 dev_err(&instance->pdev->dev, "[%d]: Dumping Done\n\n",instance->host->host_no);
1738 }
1739
1740 u32
megasas_build_and_issue_cmd(struct megasas_instance * instance,struct scsi_cmnd * scmd)1741 megasas_build_and_issue_cmd(struct megasas_instance *instance,
1742 struct scsi_cmnd *scmd)
1743 {
1744 struct megasas_cmd *cmd;
1745 u32 frame_count;
1746
1747 cmd = megasas_get_cmd(instance);
1748 if (!cmd)
1749 return SCSI_MLQUEUE_HOST_BUSY;
1750
1751 /*
1752 * Logical drive command
1753 */
1754 if (megasas_cmd_type(scmd) == READ_WRITE_LDIO)
1755 frame_count = megasas_build_ldio(instance, scmd, cmd);
1756 else
1757 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1758
1759 if (!frame_count)
1760 goto out_return_cmd;
1761
1762 cmd->scmd = scmd;
1763 megasas_priv(scmd)->cmd_priv = cmd;
1764
1765 /*
1766 * Issue the command to the FW
1767 */
1768 atomic_inc(&instance->fw_outstanding);
1769
1770 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1771 cmd->frame_count-1, instance->reg_set);
1772
1773 return 0;
1774 out_return_cmd:
1775 megasas_return_cmd(instance, cmd);
1776 return SCSI_MLQUEUE_HOST_BUSY;
1777 }
1778
1779
1780 /**
1781 * megasas_queue_command - Queue entry point
1782 * @shost: adapter SCSI host
1783 * @scmd: SCSI command to be queued
1784 */
1785 static int
megasas_queue_command(struct Scsi_Host * shost,struct scsi_cmnd * scmd)1786 megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
1787 {
1788 struct megasas_instance *instance;
1789 struct MR_PRIV_DEVICE *mr_device_priv_data;
1790 u32 ld_tgt_id;
1791
1792 instance = (struct megasas_instance *)
1793 scmd->device->host->hostdata;
1794
1795 if (instance->unload == 1) {
1796 scmd->result = DID_NO_CONNECT << 16;
1797 scsi_done(scmd);
1798 return 0;
1799 }
1800
1801 if (instance->issuepend_done == 0)
1802 return SCSI_MLQUEUE_HOST_BUSY;
1803
1804
1805 /* Check for an mpio path and adjust behavior */
1806 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
1807 if (megasas_check_mpio_paths(instance, scmd) ==
1808 (DID_REQUEUE << 16)) {
1809 return SCSI_MLQUEUE_HOST_BUSY;
1810 } else {
1811 scmd->result = DID_NO_CONNECT << 16;
1812 scsi_done(scmd);
1813 return 0;
1814 }
1815 }
1816
1817 mr_device_priv_data = scmd->device->hostdata;
1818 if (!mr_device_priv_data ||
1819 (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)) {
1820 scmd->result = DID_NO_CONNECT << 16;
1821 scsi_done(scmd);
1822 return 0;
1823 }
1824
1825 if (MEGASAS_IS_LOGICAL(scmd->device)) {
1826 ld_tgt_id = MEGASAS_TARGET_ID(scmd->device);
1827 if (instance->ld_tgtid_status[ld_tgt_id] == LD_TARGET_ID_DELETED) {
1828 scmd->result = DID_NO_CONNECT << 16;
1829 scsi_done(scmd);
1830 return 0;
1831 }
1832 }
1833
1834 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1835 return SCSI_MLQUEUE_HOST_BUSY;
1836
1837 if (mr_device_priv_data->tm_busy)
1838 return SCSI_MLQUEUE_DEVICE_BUSY;
1839
1840
1841 scmd->result = 0;
1842
1843 if (MEGASAS_IS_LOGICAL(scmd->device) &&
1844 (scmd->device->id >= instance->fw_supported_vd_count ||
1845 scmd->device->lun)) {
1846 scmd->result = DID_BAD_TARGET << 16;
1847 goto out_done;
1848 }
1849
1850 if ((scmd->cmnd[0] == SYNCHRONIZE_CACHE) &&
1851 MEGASAS_IS_LOGICAL(scmd->device) &&
1852 (!instance->fw_sync_cache_support)) {
1853 scmd->result = DID_OK << 16;
1854 goto out_done;
1855 }
1856
1857 return instance->instancet->build_and_issue_cmd(instance, scmd);
1858
1859 out_done:
1860 scsi_done(scmd);
1861 return 0;
1862 }
1863
megasas_lookup_instance(u16 host_no)1864 static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1865 {
1866 int i;
1867
1868 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1869
1870 if ((megasas_mgmt_info.instance[i]) &&
1871 (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1872 return megasas_mgmt_info.instance[i];
1873 }
1874
1875 return NULL;
1876 }
1877
1878 /*
1879 * megasas_set_dynamic_target_properties -
1880 * Device property set by driver may not be static and it is required to be
1881 * updated after OCR
1882 *
1883 * set tm_capable.
1884 * set dma alignment (only for eedp protection enable vd).
1885 *
1886 * @sdev: OS provided scsi device
1887 *
1888 * Returns void
1889 */
megasas_set_dynamic_target_properties(struct scsi_device * sdev,bool is_target_prop)1890 void megasas_set_dynamic_target_properties(struct scsi_device *sdev,
1891 bool is_target_prop)
1892 {
1893 u16 pd_index = 0, ld;
1894 u32 device_id;
1895 struct megasas_instance *instance;
1896 struct fusion_context *fusion;
1897 struct MR_PRIV_DEVICE *mr_device_priv_data;
1898 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1899 struct MR_LD_RAID *raid;
1900 struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1901
1902 instance = megasas_lookup_instance(sdev->host->host_no);
1903 fusion = instance->ctrl_context;
1904 mr_device_priv_data = sdev->hostdata;
1905
1906 if (!fusion || !mr_device_priv_data)
1907 return;
1908
1909 if (MEGASAS_IS_LOGICAL(sdev)) {
1910 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
1911 + sdev->id;
1912 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1913 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
1914 if (ld >= instance->fw_supported_vd_count)
1915 return;
1916 raid = MR_LdRaidGet(ld, local_map_ptr);
1917
1918 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER)
1919 blk_queue_update_dma_alignment(sdev->request_queue, 0x7);
1920
1921 mr_device_priv_data->is_tm_capable =
1922 raid->capability.tmCapable;
1923
1924 if (!raid->flags.isEPD)
1925 sdev->no_write_same = 1;
1926
1927 } else if (instance->use_seqnum_jbod_fp) {
1928 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1929 sdev->id;
1930 pd_sync = (void *)fusion->pd_seq_sync
1931 [(instance->pd_seq_map_id - 1) & 1];
1932 mr_device_priv_data->is_tm_capable =
1933 pd_sync->seq[pd_index].capability.tmCapable;
1934 }
1935
1936 if (is_target_prop && instance->tgt_prop->reset_tmo) {
1937 /*
1938 * If FW provides a target reset timeout value, driver will use
1939 * it. If not set, fallback to default values.
1940 */
1941 mr_device_priv_data->target_reset_tmo =
1942 min_t(u8, instance->max_reset_tmo,
1943 instance->tgt_prop->reset_tmo);
1944 mr_device_priv_data->task_abort_tmo = instance->task_abort_tmo;
1945 } else {
1946 mr_device_priv_data->target_reset_tmo =
1947 MEGASAS_DEFAULT_TM_TIMEOUT;
1948 mr_device_priv_data->task_abort_tmo =
1949 MEGASAS_DEFAULT_TM_TIMEOUT;
1950 }
1951 }
1952
1953 /*
1954 * megasas_set_nvme_device_properties -
1955 * set nomerges=2
1956 * set virtual page boundary = 4K (current mr_nvme_pg_size is 4K).
1957 * set maximum io transfer = MDTS of NVME device provided by MR firmware.
1958 *
1959 * MR firmware provides value in KB. Caller of this function converts
1960 * kb into bytes.
1961 *
1962 * e.a MDTS=5 means 2^5 * nvme page size. (In case of 4K page size,
1963 * MR firmware provides value 128 as (32 * 4K) = 128K.
1964 *
1965 * @sdev: scsi device
1966 * @max_io_size: maximum io transfer size
1967 *
1968 */
1969 static inline void
megasas_set_nvme_device_properties(struct scsi_device * sdev,u32 max_io_size)1970 megasas_set_nvme_device_properties(struct scsi_device *sdev, u32 max_io_size)
1971 {
1972 struct megasas_instance *instance;
1973 u32 mr_nvme_pg_size;
1974
1975 instance = (struct megasas_instance *)sdev->host->hostdata;
1976 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
1977 MR_DEFAULT_NVME_PAGE_SIZE);
1978
1979 blk_queue_max_hw_sectors(sdev->request_queue, (max_io_size / 512));
1980
1981 blk_queue_flag_set(QUEUE_FLAG_NOMERGES, sdev->request_queue);
1982 blk_queue_virt_boundary(sdev->request_queue, mr_nvme_pg_size - 1);
1983 }
1984
1985 /*
1986 * megasas_set_fw_assisted_qd -
1987 * set device queue depth to can_queue
1988 * set device queue depth to fw assisted qd
1989 *
1990 * @sdev: scsi device
1991 * @is_target_prop true, if fw provided target properties.
1992 */
megasas_set_fw_assisted_qd(struct scsi_device * sdev,bool is_target_prop)1993 static void megasas_set_fw_assisted_qd(struct scsi_device *sdev,
1994 bool is_target_prop)
1995 {
1996 u8 interface_type;
1997 u32 device_qd = MEGASAS_DEFAULT_CMD_PER_LUN;
1998 u32 tgt_device_qd;
1999 struct megasas_instance *instance;
2000 struct MR_PRIV_DEVICE *mr_device_priv_data;
2001
2002 instance = megasas_lookup_instance(sdev->host->host_no);
2003 mr_device_priv_data = sdev->hostdata;
2004 interface_type = mr_device_priv_data->interface_type;
2005
2006 switch (interface_type) {
2007 case SAS_PD:
2008 device_qd = MEGASAS_SAS_QD;
2009 break;
2010 case SATA_PD:
2011 device_qd = MEGASAS_SATA_QD;
2012 break;
2013 case NVME_PD:
2014 device_qd = MEGASAS_NVME_QD;
2015 break;
2016 }
2017
2018 if (is_target_prop) {
2019 tgt_device_qd = le32_to_cpu(instance->tgt_prop->device_qdepth);
2020 if (tgt_device_qd)
2021 device_qd = min(instance->host->can_queue,
2022 (int)tgt_device_qd);
2023 }
2024
2025 if (instance->enable_sdev_max_qd && interface_type != UNKNOWN_DRIVE)
2026 device_qd = instance->host->can_queue;
2027
2028 scsi_change_queue_depth(sdev, device_qd);
2029 }
2030
2031 /*
2032 * megasas_set_static_target_properties -
2033 * Device property set by driver are static and it is not required to be
2034 * updated after OCR.
2035 *
2036 * set io timeout
2037 * set device queue depth
2038 * set nvme device properties. see - megasas_set_nvme_device_properties
2039 *
2040 * @sdev: scsi device
2041 * @is_target_prop true, if fw provided target properties.
2042 */
megasas_set_static_target_properties(struct scsi_device * sdev,bool is_target_prop)2043 static void megasas_set_static_target_properties(struct scsi_device *sdev,
2044 bool is_target_prop)
2045 {
2046 u32 max_io_size_kb = MR_DEFAULT_NVME_MDTS_KB;
2047 struct megasas_instance *instance;
2048
2049 instance = megasas_lookup_instance(sdev->host->host_no);
2050
2051 /*
2052 * The RAID firmware may require extended timeouts.
2053 */
2054 blk_queue_rq_timeout(sdev->request_queue, scmd_timeout * HZ);
2055
2056 /* max_io_size_kb will be set to non zero for
2057 * nvme based vd and syspd.
2058 */
2059 if (is_target_prop)
2060 max_io_size_kb = le32_to_cpu(instance->tgt_prop->max_io_size_kb);
2061
2062 if (instance->nvme_page_size && max_io_size_kb)
2063 megasas_set_nvme_device_properties(sdev, (max_io_size_kb << 10));
2064
2065 megasas_set_fw_assisted_qd(sdev, is_target_prop);
2066 }
2067
2068
megasas_slave_configure(struct scsi_device * sdev)2069 static int megasas_slave_configure(struct scsi_device *sdev)
2070 {
2071 u16 pd_index = 0;
2072 struct megasas_instance *instance;
2073 int ret_target_prop = DCMD_FAILED;
2074 bool is_target_prop = false;
2075
2076 instance = megasas_lookup_instance(sdev->host->host_no);
2077 if (instance->pd_list_not_supported) {
2078 if (!MEGASAS_IS_LOGICAL(sdev) && sdev->type == TYPE_DISK) {
2079 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2080 sdev->id;
2081 if (instance->pd_list[pd_index].driveState !=
2082 MR_PD_STATE_SYSTEM)
2083 return -ENXIO;
2084 }
2085 }
2086
2087 mutex_lock(&instance->reset_mutex);
2088 /* Send DCMD to Firmware and cache the information */
2089 if ((instance->pd_info) && !MEGASAS_IS_LOGICAL(sdev))
2090 megasas_get_pd_info(instance, sdev);
2091
2092 /* Some ventura firmware may not have instance->nvme_page_size set.
2093 * Do not send MR_DCMD_DRV_GET_TARGET_PROP
2094 */
2095 if ((instance->tgt_prop) && (instance->nvme_page_size))
2096 ret_target_prop = megasas_get_target_prop(instance, sdev);
2097
2098 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
2099 megasas_set_static_target_properties(sdev, is_target_prop);
2100
2101 /* This sdev property may change post OCR */
2102 megasas_set_dynamic_target_properties(sdev, is_target_prop);
2103
2104 if (!MEGASAS_IS_LOGICAL(sdev))
2105 sdev->no_vpd_size = 1;
2106
2107 mutex_unlock(&instance->reset_mutex);
2108
2109 return 0;
2110 }
2111
megasas_slave_alloc(struct scsi_device * sdev)2112 static int megasas_slave_alloc(struct scsi_device *sdev)
2113 {
2114 u16 pd_index = 0, ld_tgt_id;
2115 struct megasas_instance *instance ;
2116 struct MR_PRIV_DEVICE *mr_device_priv_data;
2117
2118 instance = megasas_lookup_instance(sdev->host->host_no);
2119 if (!MEGASAS_IS_LOGICAL(sdev)) {
2120 /*
2121 * Open the OS scan to the SYSTEM PD
2122 */
2123 pd_index =
2124 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2125 sdev->id;
2126 if ((instance->pd_list_not_supported ||
2127 instance->pd_list[pd_index].driveState ==
2128 MR_PD_STATE_SYSTEM)) {
2129 goto scan_target;
2130 }
2131 return -ENXIO;
2132 } else if (!MEGASAS_IS_LUN_VALID(sdev)) {
2133 sdev_printk(KERN_INFO, sdev, "%s: invalid LUN\n", __func__);
2134 return -ENXIO;
2135 }
2136
2137 scan_target:
2138 mr_device_priv_data = kzalloc(sizeof(*mr_device_priv_data),
2139 GFP_KERNEL);
2140 if (!mr_device_priv_data)
2141 return -ENOMEM;
2142
2143 if (MEGASAS_IS_LOGICAL(sdev)) {
2144 ld_tgt_id = MEGASAS_TARGET_ID(sdev);
2145 instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_ACTIVE;
2146 if (megasas_dbg_lvl & LD_PD_DEBUG)
2147 sdev_printk(KERN_INFO, sdev, "LD target ID %d created.\n", ld_tgt_id);
2148 }
2149
2150 sdev->hostdata = mr_device_priv_data;
2151
2152 atomic_set(&mr_device_priv_data->r1_ldio_hint,
2153 instance->r1_ldio_hint_default);
2154 return 0;
2155 }
2156
megasas_slave_destroy(struct scsi_device * sdev)2157 static void megasas_slave_destroy(struct scsi_device *sdev)
2158 {
2159 u16 ld_tgt_id;
2160 struct megasas_instance *instance;
2161
2162 instance = megasas_lookup_instance(sdev->host->host_no);
2163
2164 if (MEGASAS_IS_LOGICAL(sdev)) {
2165 if (!MEGASAS_IS_LUN_VALID(sdev)) {
2166 sdev_printk(KERN_INFO, sdev, "%s: invalid LUN\n", __func__);
2167 return;
2168 }
2169 ld_tgt_id = MEGASAS_TARGET_ID(sdev);
2170 instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_DELETED;
2171 if (megasas_dbg_lvl & LD_PD_DEBUG)
2172 sdev_printk(KERN_INFO, sdev,
2173 "LD target ID %d removed from OS stack\n", ld_tgt_id);
2174 }
2175
2176 kfree(sdev->hostdata);
2177 sdev->hostdata = NULL;
2178 }
2179
2180 /*
2181 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a
2182 * kill adapter
2183 * @instance: Adapter soft state
2184 *
2185 */
megasas_complete_outstanding_ioctls(struct megasas_instance * instance)2186 static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance)
2187 {
2188 int i;
2189 struct megasas_cmd *cmd_mfi;
2190 struct megasas_cmd_fusion *cmd_fusion;
2191 struct fusion_context *fusion = instance->ctrl_context;
2192
2193 /* Find all outstanding ioctls */
2194 if (fusion) {
2195 for (i = 0; i < instance->max_fw_cmds; i++) {
2196 cmd_fusion = fusion->cmd_list[i];
2197 if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) {
2198 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
2199 if (cmd_mfi->sync_cmd &&
2200 (cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)) {
2201 cmd_mfi->frame->hdr.cmd_status =
2202 MFI_STAT_WRONG_STATE;
2203 megasas_complete_cmd(instance,
2204 cmd_mfi, DID_OK);
2205 }
2206 }
2207 }
2208 } else {
2209 for (i = 0; i < instance->max_fw_cmds; i++) {
2210 cmd_mfi = instance->cmd_list[i];
2211 if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd !=
2212 MFI_CMD_ABORT)
2213 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
2214 }
2215 }
2216 }
2217
2218
megaraid_sas_kill_hba(struct megasas_instance * instance)2219 void megaraid_sas_kill_hba(struct megasas_instance *instance)
2220 {
2221 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2222 dev_warn(&instance->pdev->dev,
2223 "Adapter already dead, skipping kill HBA\n");
2224 return;
2225 }
2226
2227 /* Set critical error to block I/O & ioctls in case caller didn't */
2228 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2229 /* Wait 1 second to ensure IO or ioctls in build have posted */
2230 msleep(1000);
2231 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2232 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2233 (instance->adapter_type != MFI_SERIES)) {
2234 if (!instance->requestorId) {
2235 writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
2236 /* Flush */
2237 readl(&instance->reg_set->doorbell);
2238 }
2239 if (instance->requestorId && instance->peerIsPresent)
2240 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
2241 } else {
2242 writel(MFI_STOP_ADP,
2243 &instance->reg_set->inbound_doorbell);
2244 }
2245 /* Complete outstanding ioctls when adapter is killed */
2246 megasas_complete_outstanding_ioctls(instance);
2247 }
2248
2249 /**
2250 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
2251 * restored to max value
2252 * @instance: Adapter soft state
2253 *
2254 */
2255 void
megasas_check_and_restore_queue_depth(struct megasas_instance * instance)2256 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
2257 {
2258 unsigned long flags;
2259
2260 if (instance->flag & MEGASAS_FW_BUSY
2261 && time_after(jiffies, instance->last_time + 5 * HZ)
2262 && atomic_read(&instance->fw_outstanding) <
2263 instance->throttlequeuedepth + 1) {
2264
2265 spin_lock_irqsave(instance->host->host_lock, flags);
2266 instance->flag &= ~MEGASAS_FW_BUSY;
2267
2268 instance->host->can_queue = instance->cur_can_queue;
2269 spin_unlock_irqrestore(instance->host->host_lock, flags);
2270 }
2271 }
2272
2273 /**
2274 * megasas_complete_cmd_dpc - Returns FW's controller structure
2275 * @instance_addr: Address of adapter soft state
2276 *
2277 * Tasklet to complete cmds
2278 */
megasas_complete_cmd_dpc(unsigned long instance_addr)2279 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
2280 {
2281 u32 producer;
2282 u32 consumer;
2283 u32 context;
2284 struct megasas_cmd *cmd;
2285 struct megasas_instance *instance =
2286 (struct megasas_instance *)instance_addr;
2287 unsigned long flags;
2288
2289 /* If we have already declared adapter dead, donot complete cmds */
2290 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
2291 return;
2292
2293 spin_lock_irqsave(&instance->completion_lock, flags);
2294
2295 producer = le32_to_cpu(*instance->producer);
2296 consumer = le32_to_cpu(*instance->consumer);
2297
2298 while (consumer != producer) {
2299 context = le32_to_cpu(instance->reply_queue[consumer]);
2300 if (context >= instance->max_fw_cmds) {
2301 dev_err(&instance->pdev->dev, "Unexpected context value %x\n",
2302 context);
2303 BUG();
2304 }
2305
2306 cmd = instance->cmd_list[context];
2307
2308 megasas_complete_cmd(instance, cmd, DID_OK);
2309
2310 consumer++;
2311 if (consumer == (instance->max_fw_cmds + 1)) {
2312 consumer = 0;
2313 }
2314 }
2315
2316 *instance->consumer = cpu_to_le32(producer);
2317
2318 spin_unlock_irqrestore(&instance->completion_lock, flags);
2319
2320 /*
2321 * Check if we can restore can_queue
2322 */
2323 megasas_check_and_restore_queue_depth(instance);
2324 }
2325
2326 static void megasas_sriov_heartbeat_handler(struct timer_list *t);
2327
2328 /**
2329 * megasas_start_timer - Initializes sriov heartbeat timer object
2330 * @instance: Adapter soft state
2331 *
2332 */
megasas_start_timer(struct megasas_instance * instance)2333 void megasas_start_timer(struct megasas_instance *instance)
2334 {
2335 struct timer_list *timer = &instance->sriov_heartbeat_timer;
2336
2337 timer_setup(timer, megasas_sriov_heartbeat_handler, 0);
2338 timer->expires = jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF;
2339 add_timer(timer);
2340 }
2341
2342 static void
2343 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
2344
2345 static void
2346 process_fw_state_change_wq(struct work_struct *work);
2347
megasas_do_ocr(struct megasas_instance * instance)2348 static void megasas_do_ocr(struct megasas_instance *instance)
2349 {
2350 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2351 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2352 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2353 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
2354 }
2355 instance->instancet->disable_intr(instance);
2356 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
2357 instance->issuepend_done = 0;
2358
2359 atomic_set(&instance->fw_outstanding, 0);
2360 megasas_internal_reset_defer_cmds(instance);
2361 process_fw_state_change_wq(&instance->work_init);
2362 }
2363
megasas_get_ld_vf_affiliation_111(struct megasas_instance * instance,int initial)2364 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
2365 int initial)
2366 {
2367 struct megasas_cmd *cmd;
2368 struct megasas_dcmd_frame *dcmd;
2369 struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
2370 dma_addr_t new_affiliation_111_h;
2371 int ld, retval = 0;
2372 u8 thisVf;
2373
2374 cmd = megasas_get_cmd(instance);
2375
2376 if (!cmd) {
2377 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:"
2378 "Failed to get cmd for scsi%d\n",
2379 instance->host->host_no);
2380 return -ENOMEM;
2381 }
2382
2383 dcmd = &cmd->frame->dcmd;
2384
2385 if (!instance->vf_affiliation_111) {
2386 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2387 "affiliation for scsi%d\n", instance->host->host_no);
2388 megasas_return_cmd(instance, cmd);
2389 return -ENOMEM;
2390 }
2391
2392 if (initial)
2393 memset(instance->vf_affiliation_111, 0,
2394 sizeof(struct MR_LD_VF_AFFILIATION_111));
2395 else {
2396 new_affiliation_111 =
2397 dma_alloc_coherent(&instance->pdev->dev,
2398 sizeof(struct MR_LD_VF_AFFILIATION_111),
2399 &new_affiliation_111_h, GFP_KERNEL);
2400 if (!new_affiliation_111) {
2401 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2402 "memory for new affiliation for scsi%d\n",
2403 instance->host->host_no);
2404 megasas_return_cmd(instance, cmd);
2405 return -ENOMEM;
2406 }
2407 }
2408
2409 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2410
2411 dcmd->cmd = MFI_CMD_DCMD;
2412 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2413 dcmd->sge_count = 1;
2414 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2415 dcmd->timeout = 0;
2416 dcmd->pad_0 = 0;
2417 dcmd->data_xfer_len =
2418 cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111));
2419 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111);
2420
2421 if (initial)
2422 dcmd->sgl.sge32[0].phys_addr =
2423 cpu_to_le32(instance->vf_affiliation_111_h);
2424 else
2425 dcmd->sgl.sge32[0].phys_addr =
2426 cpu_to_le32(new_affiliation_111_h);
2427
2428 dcmd->sgl.sge32[0].length = cpu_to_le32(
2429 sizeof(struct MR_LD_VF_AFFILIATION_111));
2430
2431 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2432 "scsi%d\n", instance->host->host_no);
2433
2434 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2435 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2436 " failed with status 0x%x for scsi%d\n",
2437 dcmd->cmd_status, instance->host->host_no);
2438 retval = 1; /* Do a scan if we couldn't get affiliation */
2439 goto out;
2440 }
2441
2442 if (!initial) {
2443 thisVf = new_affiliation_111->thisVf;
2444 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
2445 if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
2446 new_affiliation_111->map[ld].policy[thisVf]) {
2447 dev_warn(&instance->pdev->dev, "SR-IOV: "
2448 "Got new LD/VF affiliation for scsi%d\n",
2449 instance->host->host_no);
2450 memcpy(instance->vf_affiliation_111,
2451 new_affiliation_111,
2452 sizeof(struct MR_LD_VF_AFFILIATION_111));
2453 retval = 1;
2454 goto out;
2455 }
2456 }
2457 out:
2458 if (new_affiliation_111) {
2459 dma_free_coherent(&instance->pdev->dev,
2460 sizeof(struct MR_LD_VF_AFFILIATION_111),
2461 new_affiliation_111,
2462 new_affiliation_111_h);
2463 }
2464
2465 megasas_return_cmd(instance, cmd);
2466
2467 return retval;
2468 }
2469
megasas_get_ld_vf_affiliation_12(struct megasas_instance * instance,int initial)2470 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
2471 int initial)
2472 {
2473 struct megasas_cmd *cmd;
2474 struct megasas_dcmd_frame *dcmd;
2475 struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
2476 struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
2477 dma_addr_t new_affiliation_h;
2478 int i, j, retval = 0, found = 0, doscan = 0;
2479 u8 thisVf;
2480
2481 cmd = megasas_get_cmd(instance);
2482
2483 if (!cmd) {
2484 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: "
2485 "Failed to get cmd for scsi%d\n",
2486 instance->host->host_no);
2487 return -ENOMEM;
2488 }
2489
2490 dcmd = &cmd->frame->dcmd;
2491
2492 if (!instance->vf_affiliation) {
2493 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2494 "affiliation for scsi%d\n", instance->host->host_no);
2495 megasas_return_cmd(instance, cmd);
2496 return -ENOMEM;
2497 }
2498
2499 if (initial)
2500 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2501 sizeof(struct MR_LD_VF_AFFILIATION));
2502 else {
2503 new_affiliation =
2504 dma_alloc_coherent(&instance->pdev->dev,
2505 (MAX_LOGICAL_DRIVES + 1) * sizeof(struct MR_LD_VF_AFFILIATION),
2506 &new_affiliation_h, GFP_KERNEL);
2507 if (!new_affiliation) {
2508 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2509 "memory for new affiliation for scsi%d\n",
2510 instance->host->host_no);
2511 megasas_return_cmd(instance, cmd);
2512 return -ENOMEM;
2513 }
2514 }
2515
2516 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2517
2518 dcmd->cmd = MFI_CMD_DCMD;
2519 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2520 dcmd->sge_count = 1;
2521 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2522 dcmd->timeout = 0;
2523 dcmd->pad_0 = 0;
2524 dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2525 sizeof(struct MR_LD_VF_AFFILIATION));
2526 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS);
2527
2528 if (initial)
2529 dcmd->sgl.sge32[0].phys_addr =
2530 cpu_to_le32(instance->vf_affiliation_h);
2531 else
2532 dcmd->sgl.sge32[0].phys_addr =
2533 cpu_to_le32(new_affiliation_h);
2534
2535 dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2536 sizeof(struct MR_LD_VF_AFFILIATION));
2537
2538 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2539 "scsi%d\n", instance->host->host_no);
2540
2541
2542 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2543 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2544 " failed with status 0x%x for scsi%d\n",
2545 dcmd->cmd_status, instance->host->host_no);
2546 retval = 1; /* Do a scan if we couldn't get affiliation */
2547 goto out;
2548 }
2549
2550 if (!initial) {
2551 if (!new_affiliation->ldCount) {
2552 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2553 "affiliation for passive path for scsi%d\n",
2554 instance->host->host_no);
2555 retval = 1;
2556 goto out;
2557 }
2558 newmap = new_affiliation->map;
2559 savedmap = instance->vf_affiliation->map;
2560 thisVf = new_affiliation->thisVf;
2561 for (i = 0 ; i < new_affiliation->ldCount; i++) {
2562 found = 0;
2563 for (j = 0; j < instance->vf_affiliation->ldCount;
2564 j++) {
2565 if (newmap->ref.targetId ==
2566 savedmap->ref.targetId) {
2567 found = 1;
2568 if (newmap->policy[thisVf] !=
2569 savedmap->policy[thisVf]) {
2570 doscan = 1;
2571 goto out;
2572 }
2573 }
2574 savedmap = (struct MR_LD_VF_MAP *)
2575 ((unsigned char *)savedmap +
2576 savedmap->size);
2577 }
2578 if (!found && newmap->policy[thisVf] !=
2579 MR_LD_ACCESS_HIDDEN) {
2580 doscan = 1;
2581 goto out;
2582 }
2583 newmap = (struct MR_LD_VF_MAP *)
2584 ((unsigned char *)newmap + newmap->size);
2585 }
2586
2587 newmap = new_affiliation->map;
2588 savedmap = instance->vf_affiliation->map;
2589
2590 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
2591 found = 0;
2592 for (j = 0 ; j < new_affiliation->ldCount; j++) {
2593 if (savedmap->ref.targetId ==
2594 newmap->ref.targetId) {
2595 found = 1;
2596 if (savedmap->policy[thisVf] !=
2597 newmap->policy[thisVf]) {
2598 doscan = 1;
2599 goto out;
2600 }
2601 }
2602 newmap = (struct MR_LD_VF_MAP *)
2603 ((unsigned char *)newmap +
2604 newmap->size);
2605 }
2606 if (!found && savedmap->policy[thisVf] !=
2607 MR_LD_ACCESS_HIDDEN) {
2608 doscan = 1;
2609 goto out;
2610 }
2611 savedmap = (struct MR_LD_VF_MAP *)
2612 ((unsigned char *)savedmap +
2613 savedmap->size);
2614 }
2615 }
2616 out:
2617 if (doscan) {
2618 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2619 "affiliation for scsi%d\n", instance->host->host_no);
2620 memcpy(instance->vf_affiliation, new_affiliation,
2621 new_affiliation->size);
2622 retval = 1;
2623 }
2624
2625 if (new_affiliation)
2626 dma_free_coherent(&instance->pdev->dev,
2627 (MAX_LOGICAL_DRIVES + 1) *
2628 sizeof(struct MR_LD_VF_AFFILIATION),
2629 new_affiliation, new_affiliation_h);
2630 megasas_return_cmd(instance, cmd);
2631
2632 return retval;
2633 }
2634
2635 /* This function will get the current SR-IOV LD/VF affiliation */
megasas_get_ld_vf_affiliation(struct megasas_instance * instance,int initial)2636 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
2637 int initial)
2638 {
2639 int retval;
2640
2641 if (instance->PlasmaFW111)
2642 retval = megasas_get_ld_vf_affiliation_111(instance, initial);
2643 else
2644 retval = megasas_get_ld_vf_affiliation_12(instance, initial);
2645 return retval;
2646 }
2647
2648 /* This function will tell FW to start the SR-IOV heartbeat */
megasas_sriov_start_heartbeat(struct megasas_instance * instance,int initial)2649 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2650 int initial)
2651 {
2652 struct megasas_cmd *cmd;
2653 struct megasas_dcmd_frame *dcmd;
2654 int retval = 0;
2655
2656 cmd = megasas_get_cmd(instance);
2657
2658 if (!cmd) {
2659 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: "
2660 "Failed to get cmd for scsi%d\n",
2661 instance->host->host_no);
2662 return -ENOMEM;
2663 }
2664
2665 dcmd = &cmd->frame->dcmd;
2666
2667 if (initial) {
2668 instance->hb_host_mem =
2669 dma_alloc_coherent(&instance->pdev->dev,
2670 sizeof(struct MR_CTRL_HB_HOST_MEM),
2671 &instance->hb_host_mem_h,
2672 GFP_KERNEL);
2673 if (!instance->hb_host_mem) {
2674 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate"
2675 " memory for heartbeat host memory for scsi%d\n",
2676 instance->host->host_no);
2677 retval = -ENOMEM;
2678 goto out;
2679 }
2680 }
2681
2682 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2683
2684 dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM));
2685 dcmd->cmd = MFI_CMD_DCMD;
2686 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2687 dcmd->sge_count = 1;
2688 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2689 dcmd->timeout = 0;
2690 dcmd->pad_0 = 0;
2691 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2692 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC);
2693
2694 megasas_set_dma_settings(instance, dcmd, instance->hb_host_mem_h,
2695 sizeof(struct MR_CTRL_HB_HOST_MEM));
2696
2697 dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n",
2698 instance->host->host_no);
2699
2700 if ((instance->adapter_type != MFI_SERIES) &&
2701 !instance->mask_interrupts)
2702 retval = megasas_issue_blocked_cmd(instance, cmd,
2703 MEGASAS_ROUTINE_WAIT_TIME_VF);
2704 else
2705 retval = megasas_issue_polled(instance, cmd);
2706
2707 if (retval) {
2708 dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2709 "_MEM_ALLOC DCMD %s for scsi%d\n",
2710 (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ?
2711 "timed out" : "failed", instance->host->host_no);
2712 retval = 1;
2713 }
2714
2715 out:
2716 megasas_return_cmd(instance, cmd);
2717
2718 return retval;
2719 }
2720
2721 /* Handler for SR-IOV heartbeat */
megasas_sriov_heartbeat_handler(struct timer_list * t)2722 static void megasas_sriov_heartbeat_handler(struct timer_list *t)
2723 {
2724 struct megasas_instance *instance =
2725 from_timer(instance, t, sriov_heartbeat_timer);
2726
2727 if (instance->hb_host_mem->HB.fwCounter !=
2728 instance->hb_host_mem->HB.driverCounter) {
2729 instance->hb_host_mem->HB.driverCounter =
2730 instance->hb_host_mem->HB.fwCounter;
2731 mod_timer(&instance->sriov_heartbeat_timer,
2732 jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2733 } else {
2734 dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never "
2735 "completed for scsi%d\n", instance->host->host_no);
2736 schedule_work(&instance->work_init);
2737 }
2738 }
2739
2740 /**
2741 * megasas_wait_for_outstanding - Wait for all outstanding cmds
2742 * @instance: Adapter soft state
2743 *
2744 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
2745 * complete all its outstanding commands. Returns error if one or more IOs
2746 * are pending after this time period. It also marks the controller dead.
2747 */
megasas_wait_for_outstanding(struct megasas_instance * instance)2748 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2749 {
2750 int i, sl, outstanding;
2751 u32 reset_index;
2752 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
2753 unsigned long flags;
2754 struct list_head clist_local;
2755 struct megasas_cmd *reset_cmd;
2756 u32 fw_state;
2757
2758 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2759 dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n",
2760 __func__, __LINE__);
2761 return FAILED;
2762 }
2763
2764 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2765
2766 INIT_LIST_HEAD(&clist_local);
2767 spin_lock_irqsave(&instance->hba_lock, flags);
2768 list_splice_init(&instance->internal_reset_pending_q,
2769 &clist_local);
2770 spin_unlock_irqrestore(&instance->hba_lock, flags);
2771
2772 dev_notice(&instance->pdev->dev, "HBA reset wait ...\n");
2773 for (i = 0; i < wait_time; i++) {
2774 msleep(1000);
2775 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL)
2776 break;
2777 }
2778
2779 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2780 dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n");
2781 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2782 return FAILED;
2783 }
2784
2785 reset_index = 0;
2786 while (!list_empty(&clist_local)) {
2787 reset_cmd = list_entry((&clist_local)->next,
2788 struct megasas_cmd, list);
2789 list_del_init(&reset_cmd->list);
2790 if (reset_cmd->scmd) {
2791 reset_cmd->scmd->result = DID_REQUEUE << 16;
2792 dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n",
2793 reset_index, reset_cmd,
2794 reset_cmd->scmd->cmnd[0]);
2795
2796 scsi_done(reset_cmd->scmd);
2797 megasas_return_cmd(instance, reset_cmd);
2798 } else if (reset_cmd->sync_cmd) {
2799 dev_notice(&instance->pdev->dev, "%p synch cmds"
2800 "reset queue\n",
2801 reset_cmd);
2802
2803 reset_cmd->cmd_status_drv = DCMD_INIT;
2804 instance->instancet->fire_cmd(instance,
2805 reset_cmd->frame_phys_addr,
2806 0, instance->reg_set);
2807 } else {
2808 dev_notice(&instance->pdev->dev, "%p unexpected"
2809 "cmds lst\n",
2810 reset_cmd);
2811 }
2812 reset_index++;
2813 }
2814
2815 return SUCCESS;
2816 }
2817
2818 for (i = 0; i < resetwaittime; i++) {
2819 outstanding = atomic_read(&instance->fw_outstanding);
2820
2821 if (!outstanding)
2822 break;
2823
2824 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2825 dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
2826 "commands to complete\n",i,outstanding);
2827 /*
2828 * Call cmd completion routine. Cmd to be
2829 * be completed directly without depending on isr.
2830 */
2831 megasas_complete_cmd_dpc((unsigned long)instance);
2832 }
2833
2834 msleep(1000);
2835 }
2836
2837 i = 0;
2838 outstanding = atomic_read(&instance->fw_outstanding);
2839 fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2840
2841 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2842 goto no_outstanding;
2843
2844 if (instance->disableOnlineCtrlReset)
2845 goto kill_hba_and_failed;
2846 do {
2847 if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) {
2848 dev_info(&instance->pdev->dev,
2849 "%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, outstanding 0x%x\n",
2850 __func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding));
2851 if (i == 3)
2852 goto kill_hba_and_failed;
2853 megasas_do_ocr(instance);
2854
2855 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2856 dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n",
2857 __func__, __LINE__);
2858 return FAILED;
2859 }
2860 dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n",
2861 __func__, __LINE__);
2862
2863 for (sl = 0; sl < 10; sl++)
2864 msleep(500);
2865
2866 outstanding = atomic_read(&instance->fw_outstanding);
2867
2868 fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2869 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2870 goto no_outstanding;
2871 }
2872 i++;
2873 } while (i <= 3);
2874
2875 no_outstanding:
2876
2877 dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n",
2878 __func__, __LINE__);
2879 return SUCCESS;
2880
2881 kill_hba_and_failed:
2882
2883 /* Reset not supported, kill adapter */
2884 dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d"
2885 " disableOnlineCtrlReset %d fw_outstanding %d \n",
2886 __func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset,
2887 atomic_read(&instance->fw_outstanding));
2888 megasas_dump_pending_frames(instance);
2889 megaraid_sas_kill_hba(instance);
2890
2891 return FAILED;
2892 }
2893
2894 /**
2895 * megasas_generic_reset - Generic reset routine
2896 * @scmd: Mid-layer SCSI command
2897 *
2898 * This routine implements a generic reset handler for device, bus and host
2899 * reset requests. Device, bus and host specific reset handlers can use this
2900 * function after they do their specific tasks.
2901 */
megasas_generic_reset(struct scsi_cmnd * scmd)2902 static int megasas_generic_reset(struct scsi_cmnd *scmd)
2903 {
2904 int ret_val;
2905 struct megasas_instance *instance;
2906
2907 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2908
2909 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2910 scmd->cmnd[0], scmd->retries);
2911
2912 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2913 dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n");
2914 return FAILED;
2915 }
2916
2917 ret_val = megasas_wait_for_outstanding(instance);
2918 if (ret_val == SUCCESS)
2919 dev_notice(&instance->pdev->dev, "reset successful\n");
2920 else
2921 dev_err(&instance->pdev->dev, "failed to do reset\n");
2922
2923 return ret_val;
2924 }
2925
2926 /**
2927 * megasas_reset_timer - quiesce the adapter if required
2928 * @scmd: scsi cmnd
2929 *
2930 * Sets the FW busy flag and reduces the host->can_queue if the
2931 * cmd has not been completed within the timeout period.
2932 */
megasas_reset_timer(struct scsi_cmnd * scmd)2933 static enum scsi_timeout_action megasas_reset_timer(struct scsi_cmnd *scmd)
2934 {
2935 struct megasas_instance *instance;
2936 unsigned long flags;
2937
2938 if (time_after(jiffies, scmd->jiffies_at_alloc +
2939 (scmd_timeout * 2) * HZ)) {
2940 return SCSI_EH_NOT_HANDLED;
2941 }
2942
2943 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2944 if (!(instance->flag & MEGASAS_FW_BUSY)) {
2945 /* FW is busy, throttle IO */
2946 spin_lock_irqsave(instance->host->host_lock, flags);
2947
2948 instance->host->can_queue = instance->throttlequeuedepth;
2949 instance->last_time = jiffies;
2950 instance->flag |= MEGASAS_FW_BUSY;
2951
2952 spin_unlock_irqrestore(instance->host->host_lock, flags);
2953 }
2954 return SCSI_EH_RESET_TIMER;
2955 }
2956
2957 /**
2958 * megasas_dump - This function will print hexdump of provided buffer.
2959 * @buf: Buffer to be dumped
2960 * @sz: Size in bytes
2961 * @format: Different formats of dumping e.g. format=n will
2962 * cause only 'n' 32 bit words to be dumped in a single
2963 * line.
2964 */
2965 inline void
megasas_dump(void * buf,int sz,int format)2966 megasas_dump(void *buf, int sz, int format)
2967 {
2968 int i;
2969 __le32 *buf_loc = (__le32 *)buf;
2970
2971 for (i = 0; i < (sz / sizeof(__le32)); i++) {
2972 if ((i % format) == 0) {
2973 if (i != 0)
2974 printk(KERN_CONT "\n");
2975 printk(KERN_CONT "%08x: ", (i * 4));
2976 }
2977 printk(KERN_CONT "%08x ", le32_to_cpu(buf_loc[i]));
2978 }
2979 printk(KERN_CONT "\n");
2980 }
2981
2982 /**
2983 * megasas_dump_reg_set - This function will print hexdump of register set
2984 * @reg_set: Register set to be dumped
2985 */
2986 inline void
megasas_dump_reg_set(void __iomem * reg_set)2987 megasas_dump_reg_set(void __iomem *reg_set)
2988 {
2989 unsigned int i, sz = 256;
2990 u32 __iomem *reg = (u32 __iomem *)reg_set;
2991
2992 for (i = 0; i < (sz / sizeof(u32)); i++)
2993 printk("%08x: %08x\n", (i * 4), readl(®[i]));
2994 }
2995
2996 /**
2997 * megasas_dump_fusion_io - This function will print key details
2998 * of SCSI IO
2999 * @scmd: SCSI command pointer of SCSI IO
3000 */
3001 void
megasas_dump_fusion_io(struct scsi_cmnd * scmd)3002 megasas_dump_fusion_io(struct scsi_cmnd *scmd)
3003 {
3004 struct megasas_cmd_fusion *cmd = megasas_priv(scmd)->cmd_priv;
3005 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3006 struct megasas_instance *instance;
3007
3008 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3009
3010 scmd_printk(KERN_INFO, scmd,
3011 "scmd: (0x%p) retries: 0x%x allowed: 0x%x\n",
3012 scmd, scmd->retries, scmd->allowed);
3013 scsi_print_command(scmd);
3014
3015 if (cmd) {
3016 req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
3017 scmd_printk(KERN_INFO, scmd, "Request descriptor details:\n");
3018 scmd_printk(KERN_INFO, scmd,
3019 "RequestFlags:0x%x MSIxIndex:0x%x SMID:0x%x LMID:0x%x DevHandle:0x%x\n",
3020 req_desc->SCSIIO.RequestFlags,
3021 req_desc->SCSIIO.MSIxIndex, req_desc->SCSIIO.SMID,
3022 req_desc->SCSIIO.LMID, req_desc->SCSIIO.DevHandle);
3023
3024 printk(KERN_INFO "IO request frame:\n");
3025 megasas_dump(cmd->io_request,
3026 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE, 8);
3027 printk(KERN_INFO "Chain frame:\n");
3028 megasas_dump(cmd->sg_frame,
3029 instance->max_chain_frame_sz, 8);
3030 }
3031
3032 }
3033
3034 /*
3035 * megasas_dump_sys_regs - This function will dump system registers through
3036 * sysfs.
3037 * @reg_set: Pointer to System register set.
3038 * @buf: Buffer to which output is to be written.
3039 * @return: Number of bytes written to buffer.
3040 */
3041 static inline ssize_t
megasas_dump_sys_regs(void __iomem * reg_set,char * buf)3042 megasas_dump_sys_regs(void __iomem *reg_set, char *buf)
3043 {
3044 unsigned int i, sz = 256;
3045 int bytes_wrote = 0;
3046 char *loc = (char *)buf;
3047 u32 __iomem *reg = (u32 __iomem *)reg_set;
3048
3049 for (i = 0; i < sz / sizeof(u32); i++) {
3050 bytes_wrote += scnprintf(loc + bytes_wrote,
3051 PAGE_SIZE - bytes_wrote,
3052 "%08x: %08x\n", (i * 4),
3053 readl(®[i]));
3054 }
3055 return bytes_wrote;
3056 }
3057
3058 /**
3059 * megasas_reset_bus_host - Bus & host reset handler entry point
3060 * @scmd: Mid-layer SCSI command
3061 */
megasas_reset_bus_host(struct scsi_cmnd * scmd)3062 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
3063 {
3064 int ret;
3065 struct megasas_instance *instance;
3066
3067 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3068
3069 scmd_printk(KERN_INFO, scmd,
3070 "OCR is requested due to IO timeout!!\n");
3071
3072 scmd_printk(KERN_INFO, scmd,
3073 "SCSI host state: %d SCSI host busy: %d FW outstanding: %d\n",
3074 scmd->device->host->shost_state,
3075 scsi_host_busy(scmd->device->host),
3076 atomic_read(&instance->fw_outstanding));
3077 /*
3078 * First wait for all commands to complete
3079 */
3080 if (instance->adapter_type == MFI_SERIES) {
3081 ret = megasas_generic_reset(scmd);
3082 } else {
3083 megasas_dump_fusion_io(scmd);
3084 ret = megasas_reset_fusion(scmd->device->host,
3085 SCSIIO_TIMEOUT_OCR);
3086 }
3087
3088 return ret;
3089 }
3090
3091 /**
3092 * megasas_task_abort - Issues task abort request to firmware
3093 * (supported only for fusion adapters)
3094 * @scmd: SCSI command pointer
3095 */
megasas_task_abort(struct scsi_cmnd * scmd)3096 static int megasas_task_abort(struct scsi_cmnd *scmd)
3097 {
3098 int ret;
3099 struct megasas_instance *instance;
3100
3101 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3102
3103 if (instance->adapter_type != MFI_SERIES)
3104 ret = megasas_task_abort_fusion(scmd);
3105 else {
3106 sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n");
3107 ret = FAILED;
3108 }
3109
3110 return ret;
3111 }
3112
3113 /**
3114 * megasas_reset_target: Issues target reset request to firmware
3115 * (supported only for fusion adapters)
3116 * @scmd: SCSI command pointer
3117 */
megasas_reset_target(struct scsi_cmnd * scmd)3118 static int megasas_reset_target(struct scsi_cmnd *scmd)
3119 {
3120 int ret;
3121 struct megasas_instance *instance;
3122
3123 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3124
3125 if (instance->adapter_type != MFI_SERIES)
3126 ret = megasas_reset_target_fusion(scmd);
3127 else {
3128 sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n");
3129 ret = FAILED;
3130 }
3131
3132 return ret;
3133 }
3134
3135 /**
3136 * megasas_bios_param - Returns disk geometry for a disk
3137 * @sdev: device handle
3138 * @bdev: block device
3139 * @capacity: drive capacity
3140 * @geom: geometry parameters
3141 */
3142 static int
megasas_bios_param(struct scsi_device * sdev,struct block_device * bdev,sector_t capacity,int geom[])3143 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
3144 sector_t capacity, int geom[])
3145 {
3146 int heads;
3147 int sectors;
3148 sector_t cylinders;
3149 unsigned long tmp;
3150
3151 /* Default heads (64) & sectors (32) */
3152 heads = 64;
3153 sectors = 32;
3154
3155 tmp = heads * sectors;
3156 cylinders = capacity;
3157
3158 sector_div(cylinders, tmp);
3159
3160 /*
3161 * Handle extended translation size for logical drives > 1Gb
3162 */
3163
3164 if (capacity >= 0x200000) {
3165 heads = 255;
3166 sectors = 63;
3167 tmp = heads*sectors;
3168 cylinders = capacity;
3169 sector_div(cylinders, tmp);
3170 }
3171
3172 geom[0] = heads;
3173 geom[1] = sectors;
3174 geom[2] = cylinders;
3175
3176 return 0;
3177 }
3178
megasas_map_queues(struct Scsi_Host * shost)3179 static void megasas_map_queues(struct Scsi_Host *shost)
3180 {
3181 struct megasas_instance *instance;
3182 int qoff = 0, offset;
3183 struct blk_mq_queue_map *map;
3184
3185 instance = (struct megasas_instance *)shost->hostdata;
3186
3187 if (shost->nr_hw_queues == 1)
3188 return;
3189
3190 offset = instance->low_latency_index_start;
3191
3192 /* Setup Default hctx */
3193 map = &shost->tag_set.map[HCTX_TYPE_DEFAULT];
3194 map->nr_queues = instance->msix_vectors - offset;
3195 map->queue_offset = 0;
3196 blk_mq_pci_map_queues(map, instance->pdev, offset);
3197 qoff += map->nr_queues;
3198 offset += map->nr_queues;
3199
3200 /* we never use READ queue, so can't cheat blk-mq */
3201 shost->tag_set.map[HCTX_TYPE_READ].nr_queues = 0;
3202
3203 /* Setup Poll hctx */
3204 map = &shost->tag_set.map[HCTX_TYPE_POLL];
3205 map->nr_queues = instance->iopoll_q_count;
3206 if (map->nr_queues) {
3207 /*
3208 * The poll queue(s) doesn't have an IRQ (and hence IRQ
3209 * affinity), so use the regular blk-mq cpu mapping
3210 */
3211 map->queue_offset = qoff;
3212 blk_mq_map_queues(map);
3213 }
3214 }
3215
3216 static void megasas_aen_polling(struct work_struct *work);
3217
3218 /**
3219 * megasas_service_aen - Processes an event notification
3220 * @instance: Adapter soft state
3221 * @cmd: AEN command completed by the ISR
3222 *
3223 * For AEN, driver sends a command down to FW that is held by the FW till an
3224 * event occurs. When an event of interest occurs, FW completes the command
3225 * that it was previously holding.
3226 *
3227 * This routines sends SIGIO signal to processes that have registered with the
3228 * driver for AEN.
3229 */
3230 static void
megasas_service_aen(struct megasas_instance * instance,struct megasas_cmd * cmd)3231 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
3232 {
3233 unsigned long flags;
3234
3235 /*
3236 * Don't signal app if it is just an aborted previously registered aen
3237 */
3238 if ((!cmd->abort_aen) && (instance->unload == 0)) {
3239 spin_lock_irqsave(&poll_aen_lock, flags);
3240 megasas_poll_wait_aen = 1;
3241 spin_unlock_irqrestore(&poll_aen_lock, flags);
3242 wake_up(&megasas_poll_wait);
3243 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
3244 }
3245 else
3246 cmd->abort_aen = 0;
3247
3248 instance->aen_cmd = NULL;
3249
3250 megasas_return_cmd(instance, cmd);
3251
3252 if ((instance->unload == 0) &&
3253 ((instance->issuepend_done == 1))) {
3254 struct megasas_aen_event *ev;
3255
3256 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
3257 if (!ev) {
3258 dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n");
3259 } else {
3260 ev->instance = instance;
3261 instance->ev = ev;
3262 INIT_DELAYED_WORK(&ev->hotplug_work,
3263 megasas_aen_polling);
3264 schedule_delayed_work(&ev->hotplug_work, 0);
3265 }
3266 }
3267 }
3268
3269 static ssize_t
fw_crash_buffer_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3270 fw_crash_buffer_store(struct device *cdev,
3271 struct device_attribute *attr, const char *buf, size_t count)
3272 {
3273 struct Scsi_Host *shost = class_to_shost(cdev);
3274 struct megasas_instance *instance =
3275 (struct megasas_instance *) shost->hostdata;
3276 int val = 0;
3277
3278 if (kstrtoint(buf, 0, &val) != 0)
3279 return -EINVAL;
3280
3281 mutex_lock(&instance->crashdump_lock);
3282 instance->fw_crash_buffer_offset = val;
3283 mutex_unlock(&instance->crashdump_lock);
3284 return strlen(buf);
3285 }
3286
3287 static ssize_t
fw_crash_buffer_show(struct device * cdev,struct device_attribute * attr,char * buf)3288 fw_crash_buffer_show(struct device *cdev,
3289 struct device_attribute *attr, char *buf)
3290 {
3291 struct Scsi_Host *shost = class_to_shost(cdev);
3292 struct megasas_instance *instance =
3293 (struct megasas_instance *) shost->hostdata;
3294 u32 size;
3295 unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
3296 unsigned long chunk_left_bytes;
3297 unsigned long src_addr;
3298 u32 buff_offset;
3299
3300 mutex_lock(&instance->crashdump_lock);
3301 buff_offset = instance->fw_crash_buffer_offset;
3302 if (!instance->crash_dump_buf ||
3303 !((instance->fw_crash_state == AVAILABLE) ||
3304 (instance->fw_crash_state == COPYING))) {
3305 dev_err(&instance->pdev->dev,
3306 "Firmware crash dump is not available\n");
3307 mutex_unlock(&instance->crashdump_lock);
3308 return -EINVAL;
3309 }
3310
3311 if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) {
3312 dev_err(&instance->pdev->dev,
3313 "Firmware crash dump offset is out of range\n");
3314 mutex_unlock(&instance->crashdump_lock);
3315 return 0;
3316 }
3317
3318 size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
3319 chunk_left_bytes = dmachunk - (buff_offset % dmachunk);
3320 size = (size > chunk_left_bytes) ? chunk_left_bytes : size;
3321 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
3322
3323 src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
3324 (buff_offset % dmachunk);
3325 memcpy(buf, (void *)src_addr, size);
3326 mutex_unlock(&instance->crashdump_lock);
3327
3328 return size;
3329 }
3330
3331 static ssize_t
fw_crash_buffer_size_show(struct device * cdev,struct device_attribute * attr,char * buf)3332 fw_crash_buffer_size_show(struct device *cdev,
3333 struct device_attribute *attr, char *buf)
3334 {
3335 struct Scsi_Host *shost = class_to_shost(cdev);
3336 struct megasas_instance *instance =
3337 (struct megasas_instance *) shost->hostdata;
3338
3339 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
3340 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
3341 }
3342
3343 static ssize_t
fw_crash_state_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3344 fw_crash_state_store(struct device *cdev,
3345 struct device_attribute *attr, const char *buf, size_t count)
3346 {
3347 struct Scsi_Host *shost = class_to_shost(cdev);
3348 struct megasas_instance *instance =
3349 (struct megasas_instance *) shost->hostdata;
3350 int val = 0;
3351
3352 if (kstrtoint(buf, 0, &val) != 0)
3353 return -EINVAL;
3354
3355 if ((val <= AVAILABLE || val > COPY_ERROR)) {
3356 dev_err(&instance->pdev->dev, "application updates invalid "
3357 "firmware crash state\n");
3358 return -EINVAL;
3359 }
3360
3361 instance->fw_crash_state = val;
3362
3363 if ((val == COPIED) || (val == COPY_ERROR)) {
3364 mutex_lock(&instance->crashdump_lock);
3365 megasas_free_host_crash_buffer(instance);
3366 mutex_unlock(&instance->crashdump_lock);
3367 if (val == COPY_ERROR)
3368 dev_info(&instance->pdev->dev, "application failed to "
3369 "copy Firmware crash dump\n");
3370 else
3371 dev_info(&instance->pdev->dev, "Firmware crash dump "
3372 "copied successfully\n");
3373 }
3374 return strlen(buf);
3375 }
3376
3377 static ssize_t
fw_crash_state_show(struct device * cdev,struct device_attribute * attr,char * buf)3378 fw_crash_state_show(struct device *cdev,
3379 struct device_attribute *attr, char *buf)
3380 {
3381 struct Scsi_Host *shost = class_to_shost(cdev);
3382 struct megasas_instance *instance =
3383 (struct megasas_instance *) shost->hostdata;
3384
3385 return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
3386 }
3387
3388 static ssize_t
page_size_show(struct device * cdev,struct device_attribute * attr,char * buf)3389 page_size_show(struct device *cdev,
3390 struct device_attribute *attr, char *buf)
3391 {
3392 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
3393 }
3394
3395 static ssize_t
ldio_outstanding_show(struct device * cdev,struct device_attribute * attr,char * buf)3396 ldio_outstanding_show(struct device *cdev, struct device_attribute *attr,
3397 char *buf)
3398 {
3399 struct Scsi_Host *shost = class_to_shost(cdev);
3400 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3401
3402 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding));
3403 }
3404
3405 static ssize_t
fw_cmds_outstanding_show(struct device * cdev,struct device_attribute * attr,char * buf)3406 fw_cmds_outstanding_show(struct device *cdev,
3407 struct device_attribute *attr, char *buf)
3408 {
3409 struct Scsi_Host *shost = class_to_shost(cdev);
3410 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3411
3412 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->fw_outstanding));
3413 }
3414
3415 static ssize_t
enable_sdev_max_qd_show(struct device * cdev,struct device_attribute * attr,char * buf)3416 enable_sdev_max_qd_show(struct device *cdev,
3417 struct device_attribute *attr, char *buf)
3418 {
3419 struct Scsi_Host *shost = class_to_shost(cdev);
3420 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3421
3422 return snprintf(buf, PAGE_SIZE, "%d\n", instance->enable_sdev_max_qd);
3423 }
3424
3425 static ssize_t
enable_sdev_max_qd_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3426 enable_sdev_max_qd_store(struct device *cdev,
3427 struct device_attribute *attr, const char *buf, size_t count)
3428 {
3429 struct Scsi_Host *shost = class_to_shost(cdev);
3430 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3431 u32 val = 0;
3432 bool is_target_prop;
3433 int ret_target_prop = DCMD_FAILED;
3434 struct scsi_device *sdev;
3435
3436 if (kstrtou32(buf, 0, &val) != 0) {
3437 pr_err("megasas: could not set enable_sdev_max_qd\n");
3438 return -EINVAL;
3439 }
3440
3441 mutex_lock(&instance->reset_mutex);
3442 if (val)
3443 instance->enable_sdev_max_qd = true;
3444 else
3445 instance->enable_sdev_max_qd = false;
3446
3447 shost_for_each_device(sdev, shost) {
3448 ret_target_prop = megasas_get_target_prop(instance, sdev);
3449 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
3450 megasas_set_fw_assisted_qd(sdev, is_target_prop);
3451 }
3452 mutex_unlock(&instance->reset_mutex);
3453
3454 return strlen(buf);
3455 }
3456
3457 static ssize_t
dump_system_regs_show(struct device * cdev,struct device_attribute * attr,char * buf)3458 dump_system_regs_show(struct device *cdev,
3459 struct device_attribute *attr, char *buf)
3460 {
3461 struct Scsi_Host *shost = class_to_shost(cdev);
3462 struct megasas_instance *instance =
3463 (struct megasas_instance *)shost->hostdata;
3464
3465 return megasas_dump_sys_regs(instance->reg_set, buf);
3466 }
3467
3468 static ssize_t
raid_map_id_show(struct device * cdev,struct device_attribute * attr,char * buf)3469 raid_map_id_show(struct device *cdev, struct device_attribute *attr,
3470 char *buf)
3471 {
3472 struct Scsi_Host *shost = class_to_shost(cdev);
3473 struct megasas_instance *instance =
3474 (struct megasas_instance *)shost->hostdata;
3475
3476 return snprintf(buf, PAGE_SIZE, "%ld\n",
3477 (unsigned long)instance->map_id);
3478 }
3479
3480 static DEVICE_ATTR_RW(fw_crash_buffer);
3481 static DEVICE_ATTR_RO(fw_crash_buffer_size);
3482 static DEVICE_ATTR_RW(fw_crash_state);
3483 static DEVICE_ATTR_RO(page_size);
3484 static DEVICE_ATTR_RO(ldio_outstanding);
3485 static DEVICE_ATTR_RO(fw_cmds_outstanding);
3486 static DEVICE_ATTR_RW(enable_sdev_max_qd);
3487 static DEVICE_ATTR_RO(dump_system_regs);
3488 static DEVICE_ATTR_RO(raid_map_id);
3489
3490 static struct attribute *megaraid_host_attrs[] = {
3491 &dev_attr_fw_crash_buffer_size.attr,
3492 &dev_attr_fw_crash_buffer.attr,
3493 &dev_attr_fw_crash_state.attr,
3494 &dev_attr_page_size.attr,
3495 &dev_attr_ldio_outstanding.attr,
3496 &dev_attr_fw_cmds_outstanding.attr,
3497 &dev_attr_enable_sdev_max_qd.attr,
3498 &dev_attr_dump_system_regs.attr,
3499 &dev_attr_raid_map_id.attr,
3500 NULL,
3501 };
3502
3503 ATTRIBUTE_GROUPS(megaraid_host);
3504
3505 /*
3506 * Scsi host template for megaraid_sas driver
3507 */
3508 static const struct scsi_host_template megasas_template = {
3509
3510 .module = THIS_MODULE,
3511 .name = "Avago SAS based MegaRAID driver",
3512 .proc_name = "megaraid_sas",
3513 .slave_configure = megasas_slave_configure,
3514 .slave_alloc = megasas_slave_alloc,
3515 .slave_destroy = megasas_slave_destroy,
3516 .queuecommand = megasas_queue_command,
3517 .eh_target_reset_handler = megasas_reset_target,
3518 .eh_abort_handler = megasas_task_abort,
3519 .eh_host_reset_handler = megasas_reset_bus_host,
3520 .eh_timed_out = megasas_reset_timer,
3521 .shost_groups = megaraid_host_groups,
3522 .bios_param = megasas_bios_param,
3523 .map_queues = megasas_map_queues,
3524 .mq_poll = megasas_blk_mq_poll,
3525 .change_queue_depth = scsi_change_queue_depth,
3526 .max_segment_size = 0xffffffff,
3527 .cmd_size = sizeof(struct megasas_cmd_priv),
3528 };
3529
3530 /**
3531 * megasas_complete_int_cmd - Completes an internal command
3532 * @instance: Adapter soft state
3533 * @cmd: Command to be completed
3534 *
3535 * The megasas_issue_blocked_cmd() function waits for a command to complete
3536 * after it issues a command. This function wakes up that waiting routine by
3537 * calling wake_up() on the wait queue.
3538 */
3539 static void
megasas_complete_int_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd)3540 megasas_complete_int_cmd(struct megasas_instance *instance,
3541 struct megasas_cmd *cmd)
3542 {
3543 if (cmd->cmd_status_drv == DCMD_INIT)
3544 cmd->cmd_status_drv =
3545 (cmd->frame->io.cmd_status == MFI_STAT_OK) ?
3546 DCMD_SUCCESS : DCMD_FAILED;
3547
3548 wake_up(&instance->int_cmd_wait_q);
3549 }
3550
3551 /**
3552 * megasas_complete_abort - Completes aborting a command
3553 * @instance: Adapter soft state
3554 * @cmd: Cmd that was issued to abort another cmd
3555 *
3556 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
3557 * after it issues an abort on a previously issued command. This function
3558 * wakes up all functions waiting on the same wait queue.
3559 */
3560 static void
megasas_complete_abort(struct megasas_instance * instance,struct megasas_cmd * cmd)3561 megasas_complete_abort(struct megasas_instance *instance,
3562 struct megasas_cmd *cmd)
3563 {
3564 if (cmd->sync_cmd) {
3565 cmd->sync_cmd = 0;
3566 cmd->cmd_status_drv = DCMD_SUCCESS;
3567 wake_up(&instance->abort_cmd_wait_q);
3568 }
3569 }
3570
3571 static void
megasas_set_ld_removed_by_fw(struct megasas_instance * instance)3572 megasas_set_ld_removed_by_fw(struct megasas_instance *instance)
3573 {
3574 uint i;
3575
3576 for (i = 0; (i < MEGASAS_MAX_LD_IDS); i++) {
3577 if (instance->ld_ids_prev[i] != 0xff &&
3578 instance->ld_ids_from_raidmap[i] == 0xff) {
3579 if (megasas_dbg_lvl & LD_PD_DEBUG)
3580 dev_info(&instance->pdev->dev,
3581 "LD target ID %d removed from RAID map\n", i);
3582 instance->ld_tgtid_status[i] = LD_TARGET_ID_DELETED;
3583 }
3584 }
3585 }
3586
3587 /**
3588 * megasas_complete_cmd - Completes a command
3589 * @instance: Adapter soft state
3590 * @cmd: Command to be completed
3591 * @alt_status: If non-zero, use this value as status to
3592 * SCSI mid-layer instead of the value returned
3593 * by the FW. This should be used if caller wants
3594 * an alternate status (as in the case of aborted
3595 * commands)
3596 */
3597 void
megasas_complete_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd,u8 alt_status)3598 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
3599 u8 alt_status)
3600 {
3601 int exception = 0;
3602 struct megasas_header *hdr = &cmd->frame->hdr;
3603 unsigned long flags;
3604 struct fusion_context *fusion = instance->ctrl_context;
3605 u32 opcode, status;
3606
3607 /* flag for the retry reset */
3608 cmd->retry_for_fw_reset = 0;
3609
3610 if (cmd->scmd)
3611 megasas_priv(cmd->scmd)->cmd_priv = NULL;
3612
3613 switch (hdr->cmd) {
3614 case MFI_CMD_INVALID:
3615 /* Some older 1068 controller FW may keep a pended
3616 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
3617 when booting the kdump kernel. Ignore this command to
3618 prevent a kernel panic on shutdown of the kdump kernel. */
3619 dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command "
3620 "completed\n");
3621 dev_warn(&instance->pdev->dev, "If you have a controller "
3622 "other than PERC5, please upgrade your firmware\n");
3623 break;
3624 case MFI_CMD_PD_SCSI_IO:
3625 case MFI_CMD_LD_SCSI_IO:
3626
3627 /*
3628 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
3629 * issued either through an IO path or an IOCTL path. If it
3630 * was via IOCTL, we will send it to internal completion.
3631 */
3632 if (cmd->sync_cmd) {
3633 cmd->sync_cmd = 0;
3634 megasas_complete_int_cmd(instance, cmd);
3635 break;
3636 }
3637 fallthrough;
3638
3639 case MFI_CMD_LD_READ:
3640 case MFI_CMD_LD_WRITE:
3641
3642 if (alt_status) {
3643 cmd->scmd->result = alt_status << 16;
3644 exception = 1;
3645 }
3646
3647 if (exception) {
3648
3649 atomic_dec(&instance->fw_outstanding);
3650
3651 scsi_dma_unmap(cmd->scmd);
3652 scsi_done(cmd->scmd);
3653 megasas_return_cmd(instance, cmd);
3654
3655 break;
3656 }
3657
3658 switch (hdr->cmd_status) {
3659
3660 case MFI_STAT_OK:
3661 cmd->scmd->result = DID_OK << 16;
3662 break;
3663
3664 case MFI_STAT_SCSI_IO_FAILED:
3665 case MFI_STAT_LD_INIT_IN_PROGRESS:
3666 if (hdr->scsi_status == 0xf0)
3667 cmd->scmd->result = (DID_ERROR << 16) | SAM_STAT_CHECK_CONDITION;
3668 else
3669 cmd->scmd->result = (DID_ERROR << 16) | hdr->scsi_status;
3670 break;
3671
3672 case MFI_STAT_SCSI_DONE_WITH_ERROR:
3673
3674 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
3675
3676 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
3677 memset(cmd->scmd->sense_buffer, 0,
3678 SCSI_SENSE_BUFFERSIZE);
3679 memcpy(cmd->scmd->sense_buffer, cmd->sense,
3680 hdr->sense_len);
3681 }
3682
3683 break;
3684
3685 case MFI_STAT_LD_OFFLINE:
3686 case MFI_STAT_DEVICE_NOT_FOUND:
3687 cmd->scmd->result = DID_BAD_TARGET << 16;
3688 break;
3689
3690 default:
3691 dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n",
3692 hdr->cmd_status);
3693 cmd->scmd->result = DID_ERROR << 16;
3694 break;
3695 }
3696
3697 atomic_dec(&instance->fw_outstanding);
3698
3699 scsi_dma_unmap(cmd->scmd);
3700 scsi_done(cmd->scmd);
3701 megasas_return_cmd(instance, cmd);
3702
3703 break;
3704
3705 case MFI_CMD_SMP:
3706 case MFI_CMD_STP:
3707 case MFI_CMD_NVME:
3708 case MFI_CMD_TOOLBOX:
3709 megasas_complete_int_cmd(instance, cmd);
3710 break;
3711
3712 case MFI_CMD_DCMD:
3713 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
3714 /* Check for LD map update */
3715 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
3716 && (cmd->frame->dcmd.mbox.b[1] == 1)) {
3717 fusion->fast_path_io = 0;
3718 spin_lock_irqsave(instance->host->host_lock, flags);
3719 status = cmd->frame->hdr.cmd_status;
3720 instance->map_update_cmd = NULL;
3721 if (status != MFI_STAT_OK) {
3722 if (status != MFI_STAT_NOT_FOUND)
3723 dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n",
3724 cmd->frame->hdr.cmd_status);
3725 else {
3726 megasas_return_cmd(instance, cmd);
3727 spin_unlock_irqrestore(
3728 instance->host->host_lock,
3729 flags);
3730 break;
3731 }
3732 }
3733
3734 megasas_return_cmd(instance, cmd);
3735
3736 /*
3737 * Set fast path IO to ZERO.
3738 * Validate Map will set proper value.
3739 * Meanwhile all IOs will go as LD IO.
3740 */
3741 if (status == MFI_STAT_OK &&
3742 (MR_ValidateMapInfo(instance, (instance->map_id + 1)))) {
3743 instance->map_id++;
3744 fusion->fast_path_io = 1;
3745 } else {
3746 fusion->fast_path_io = 0;
3747 }
3748
3749 if (instance->adapter_type >= INVADER_SERIES)
3750 megasas_set_ld_removed_by_fw(instance);
3751
3752 megasas_sync_map_info(instance);
3753 spin_unlock_irqrestore(instance->host->host_lock,
3754 flags);
3755
3756 break;
3757 }
3758 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
3759 opcode == MR_DCMD_CTRL_EVENT_GET) {
3760 spin_lock_irqsave(&poll_aen_lock, flags);
3761 megasas_poll_wait_aen = 0;
3762 spin_unlock_irqrestore(&poll_aen_lock, flags);
3763 }
3764
3765 /* FW has an updated PD sequence */
3766 if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
3767 (cmd->frame->dcmd.mbox.b[0] == 1)) {
3768
3769 spin_lock_irqsave(instance->host->host_lock, flags);
3770 status = cmd->frame->hdr.cmd_status;
3771 instance->jbod_seq_cmd = NULL;
3772 megasas_return_cmd(instance, cmd);
3773
3774 if (status == MFI_STAT_OK) {
3775 instance->pd_seq_map_id++;
3776 /* Re-register a pd sync seq num cmd */
3777 if (megasas_sync_pd_seq_num(instance, true))
3778 instance->use_seqnum_jbod_fp = false;
3779 } else
3780 instance->use_seqnum_jbod_fp = false;
3781
3782 spin_unlock_irqrestore(instance->host->host_lock, flags);
3783 break;
3784 }
3785
3786 /*
3787 * See if got an event notification
3788 */
3789 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
3790 megasas_service_aen(instance, cmd);
3791 else
3792 megasas_complete_int_cmd(instance, cmd);
3793
3794 break;
3795
3796 case MFI_CMD_ABORT:
3797 /*
3798 * Cmd issued to abort another cmd returned
3799 */
3800 megasas_complete_abort(instance, cmd);
3801 break;
3802
3803 default:
3804 dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n",
3805 hdr->cmd);
3806 megasas_complete_int_cmd(instance, cmd);
3807 break;
3808 }
3809 }
3810
3811 /**
3812 * megasas_issue_pending_cmds_again - issue all pending cmds
3813 * in FW again because of the fw reset
3814 * @instance: Adapter soft state
3815 */
3816 static inline void
megasas_issue_pending_cmds_again(struct megasas_instance * instance)3817 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
3818 {
3819 struct megasas_cmd *cmd;
3820 struct list_head clist_local;
3821 union megasas_evt_class_locale class_locale;
3822 unsigned long flags;
3823 u32 seq_num;
3824
3825 INIT_LIST_HEAD(&clist_local);
3826 spin_lock_irqsave(&instance->hba_lock, flags);
3827 list_splice_init(&instance->internal_reset_pending_q, &clist_local);
3828 spin_unlock_irqrestore(&instance->hba_lock, flags);
3829
3830 while (!list_empty(&clist_local)) {
3831 cmd = list_entry((&clist_local)->next,
3832 struct megasas_cmd, list);
3833 list_del_init(&cmd->list);
3834
3835 if (cmd->sync_cmd || cmd->scmd) {
3836 dev_notice(&instance->pdev->dev, "command %p, %p:%d"
3837 "detected to be pending while HBA reset\n",
3838 cmd, cmd->scmd, cmd->sync_cmd);
3839
3840 cmd->retry_for_fw_reset++;
3841
3842 if (cmd->retry_for_fw_reset == 3) {
3843 dev_notice(&instance->pdev->dev, "cmd %p, %p:%d"
3844 "was tried multiple times during reset."
3845 "Shutting down the HBA\n",
3846 cmd, cmd->scmd, cmd->sync_cmd);
3847 instance->instancet->disable_intr(instance);
3848 atomic_set(&instance->fw_reset_no_pci_access, 1);
3849 megaraid_sas_kill_hba(instance);
3850 return;
3851 }
3852 }
3853
3854 if (cmd->sync_cmd == 1) {
3855 if (cmd->scmd) {
3856 dev_notice(&instance->pdev->dev, "unexpected"
3857 "cmd attached to internal command!\n");
3858 }
3859 dev_notice(&instance->pdev->dev, "%p synchronous cmd"
3860 "on the internal reset queue,"
3861 "issue it again.\n", cmd);
3862 cmd->cmd_status_drv = DCMD_INIT;
3863 instance->instancet->fire_cmd(instance,
3864 cmd->frame_phys_addr,
3865 0, instance->reg_set);
3866 } else if (cmd->scmd) {
3867 dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]"
3868 "detected on the internal queue, issue again.\n",
3869 cmd, cmd->scmd->cmnd[0]);
3870
3871 atomic_inc(&instance->fw_outstanding);
3872 instance->instancet->fire_cmd(instance,
3873 cmd->frame_phys_addr,
3874 cmd->frame_count-1, instance->reg_set);
3875 } else {
3876 dev_notice(&instance->pdev->dev, "%p unexpected cmd on the"
3877 "internal reset defer list while re-issue!!\n",
3878 cmd);
3879 }
3880 }
3881
3882 if (instance->aen_cmd) {
3883 dev_notice(&instance->pdev->dev, "aen_cmd in def process\n");
3884 megasas_return_cmd(instance, instance->aen_cmd);
3885
3886 instance->aen_cmd = NULL;
3887 }
3888
3889 /*
3890 * Initiate AEN (Asynchronous Event Notification)
3891 */
3892 seq_num = instance->last_seq_num;
3893 class_locale.members.reserved = 0;
3894 class_locale.members.locale = MR_EVT_LOCALE_ALL;
3895 class_locale.members.class = MR_EVT_CLASS_DEBUG;
3896
3897 megasas_register_aen(instance, seq_num, class_locale.word);
3898 }
3899
3900 /*
3901 * Move the internal reset pending commands to a deferred queue.
3902 *
3903 * We move the commands pending at internal reset time to a
3904 * pending queue. This queue would be flushed after successful
3905 * completion of the internal reset sequence. if the internal reset
3906 * did not complete in time, the kernel reset handler would flush
3907 * these commands.
3908 */
3909 static void
megasas_internal_reset_defer_cmds(struct megasas_instance * instance)3910 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
3911 {
3912 struct megasas_cmd *cmd;
3913 int i;
3914 u16 max_cmd = instance->max_fw_cmds;
3915 u32 defer_index;
3916 unsigned long flags;
3917
3918 defer_index = 0;
3919 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
3920 for (i = 0; i < max_cmd; i++) {
3921 cmd = instance->cmd_list[i];
3922 if (cmd->sync_cmd == 1 || cmd->scmd) {
3923 dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p"
3924 "on the defer queue as internal\n",
3925 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
3926
3927 if (!list_empty(&cmd->list)) {
3928 dev_notice(&instance->pdev->dev, "ERROR while"
3929 " moving this cmd:%p, %d %p, it was"
3930 "discovered on some list?\n",
3931 cmd, cmd->sync_cmd, cmd->scmd);
3932
3933 list_del_init(&cmd->list);
3934 }
3935 defer_index++;
3936 list_add_tail(&cmd->list,
3937 &instance->internal_reset_pending_q);
3938 }
3939 }
3940 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
3941 }
3942
3943
3944 static void
process_fw_state_change_wq(struct work_struct * work)3945 process_fw_state_change_wq(struct work_struct *work)
3946 {
3947 struct megasas_instance *instance =
3948 container_of(work, struct megasas_instance, work_init);
3949 u32 wait;
3950 unsigned long flags;
3951
3952 if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) {
3953 dev_notice(&instance->pdev->dev, "error, recovery st %x\n",
3954 atomic_read(&instance->adprecovery));
3955 return ;
3956 }
3957
3958 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
3959 dev_notice(&instance->pdev->dev, "FW detected to be in fault"
3960 "state, restarting it...\n");
3961
3962 instance->instancet->disable_intr(instance);
3963 atomic_set(&instance->fw_outstanding, 0);
3964
3965 atomic_set(&instance->fw_reset_no_pci_access, 1);
3966 instance->instancet->adp_reset(instance, instance->reg_set);
3967 atomic_set(&instance->fw_reset_no_pci_access, 0);
3968
3969 dev_notice(&instance->pdev->dev, "FW restarted successfully,"
3970 "initiating next stage...\n");
3971
3972 dev_notice(&instance->pdev->dev, "HBA recovery state machine,"
3973 "state 2 starting...\n");
3974
3975 /* waiting for about 20 second before start the second init */
3976 for (wait = 0; wait < 30; wait++) {
3977 msleep(1000);
3978 }
3979
3980 if (megasas_transition_to_ready(instance, 1)) {
3981 dev_notice(&instance->pdev->dev, "adapter not ready\n");
3982
3983 atomic_set(&instance->fw_reset_no_pci_access, 1);
3984 megaraid_sas_kill_hba(instance);
3985 return ;
3986 }
3987
3988 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
3989 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
3990 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
3991 ) {
3992 *instance->consumer = *instance->producer;
3993 } else {
3994 *instance->consumer = 0;
3995 *instance->producer = 0;
3996 }
3997
3998 megasas_issue_init_mfi(instance);
3999
4000 spin_lock_irqsave(&instance->hba_lock, flags);
4001 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
4002 spin_unlock_irqrestore(&instance->hba_lock, flags);
4003 instance->instancet->enable_intr(instance);
4004
4005 megasas_issue_pending_cmds_again(instance);
4006 instance->issuepend_done = 1;
4007 }
4008 }
4009
4010 /**
4011 * megasas_deplete_reply_queue - Processes all completed commands
4012 * @instance: Adapter soft state
4013 * @alt_status: Alternate status to be returned to
4014 * SCSI mid-layer instead of the status
4015 * returned by the FW
4016 * Note: this must be called with hba lock held
4017 */
4018 static int
megasas_deplete_reply_queue(struct megasas_instance * instance,u8 alt_status)4019 megasas_deplete_reply_queue(struct megasas_instance *instance,
4020 u8 alt_status)
4021 {
4022 u32 mfiStatus;
4023 u32 fw_state;
4024
4025 if (instance->instancet->check_reset(instance, instance->reg_set) == 1)
4026 return IRQ_HANDLED;
4027
4028 mfiStatus = instance->instancet->clear_intr(instance);
4029 if (mfiStatus == 0) {
4030 /* Hardware may not set outbound_intr_status in MSI-X mode */
4031 if (!instance->msix_vectors)
4032 return IRQ_NONE;
4033 }
4034
4035 instance->mfiStatus = mfiStatus;
4036
4037 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
4038 fw_state = instance->instancet->read_fw_status_reg(
4039 instance) & MFI_STATE_MASK;
4040
4041 if (fw_state != MFI_STATE_FAULT) {
4042 dev_notice(&instance->pdev->dev, "fw state:%x\n",
4043 fw_state);
4044 }
4045
4046 if ((fw_state == MFI_STATE_FAULT) &&
4047 (instance->disableOnlineCtrlReset == 0)) {
4048 dev_notice(&instance->pdev->dev, "wait adp restart\n");
4049
4050 if ((instance->pdev->device ==
4051 PCI_DEVICE_ID_LSI_SAS1064R) ||
4052 (instance->pdev->device ==
4053 PCI_DEVICE_ID_DELL_PERC5) ||
4054 (instance->pdev->device ==
4055 PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
4056
4057 *instance->consumer =
4058 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
4059 }
4060
4061
4062 instance->instancet->disable_intr(instance);
4063 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4064 instance->issuepend_done = 0;
4065
4066 atomic_set(&instance->fw_outstanding, 0);
4067 megasas_internal_reset_defer_cmds(instance);
4068
4069 dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n",
4070 fw_state, atomic_read(&instance->adprecovery));
4071
4072 schedule_work(&instance->work_init);
4073 return IRQ_HANDLED;
4074
4075 } else {
4076 dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n",
4077 fw_state, instance->disableOnlineCtrlReset);
4078 }
4079 }
4080
4081 tasklet_schedule(&instance->isr_tasklet);
4082 return IRQ_HANDLED;
4083 }
4084
4085 /**
4086 * megasas_isr - isr entry point
4087 * @irq: IRQ number
4088 * @devp: IRQ context address
4089 */
megasas_isr(int irq,void * devp)4090 static irqreturn_t megasas_isr(int irq, void *devp)
4091 {
4092 struct megasas_irq_context *irq_context = devp;
4093 struct megasas_instance *instance = irq_context->instance;
4094 unsigned long flags;
4095 irqreturn_t rc;
4096
4097 if (atomic_read(&instance->fw_reset_no_pci_access))
4098 return IRQ_HANDLED;
4099
4100 spin_lock_irqsave(&instance->hba_lock, flags);
4101 rc = megasas_deplete_reply_queue(instance, DID_OK);
4102 spin_unlock_irqrestore(&instance->hba_lock, flags);
4103
4104 return rc;
4105 }
4106
4107 /**
4108 * megasas_transition_to_ready - Move the FW to READY state
4109 * @instance: Adapter soft state
4110 * @ocr: Adapter reset state
4111 *
4112 * During the initialization, FW passes can potentially be in any one of
4113 * several possible states. If the FW in operational, waiting-for-handshake
4114 * states, driver must take steps to bring it to ready state. Otherwise, it
4115 * has to wait for the ready state.
4116 */
4117 int
megasas_transition_to_ready(struct megasas_instance * instance,int ocr)4118 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
4119 {
4120 int i;
4121 u8 max_wait;
4122 u32 fw_state;
4123 u32 abs_state, curr_abs_state;
4124
4125 abs_state = instance->instancet->read_fw_status_reg(instance);
4126 fw_state = abs_state & MFI_STATE_MASK;
4127
4128 if (fw_state != MFI_STATE_READY)
4129 dev_info(&instance->pdev->dev, "Waiting for FW to come to ready"
4130 " state\n");
4131
4132 while (fw_state != MFI_STATE_READY) {
4133
4134 switch (fw_state) {
4135
4136 case MFI_STATE_FAULT:
4137 dev_printk(KERN_ERR, &instance->pdev->dev,
4138 "FW in FAULT state, Fault code:0x%x subcode:0x%x func:%s\n",
4139 abs_state & MFI_STATE_FAULT_CODE,
4140 abs_state & MFI_STATE_FAULT_SUBCODE, __func__);
4141 if (ocr) {
4142 max_wait = MEGASAS_RESET_WAIT_TIME;
4143 break;
4144 } else {
4145 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4146 megasas_dump_reg_set(instance->reg_set);
4147 return -ENODEV;
4148 }
4149
4150 case MFI_STATE_WAIT_HANDSHAKE:
4151 /*
4152 * Set the CLR bit in inbound doorbell
4153 */
4154 if ((instance->pdev->device ==
4155 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4156 (instance->pdev->device ==
4157 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4158 (instance->adapter_type != MFI_SERIES))
4159 writel(
4160 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4161 &instance->reg_set->doorbell);
4162 else
4163 writel(
4164 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4165 &instance->reg_set->inbound_doorbell);
4166
4167 max_wait = MEGASAS_RESET_WAIT_TIME;
4168 break;
4169
4170 case MFI_STATE_BOOT_MESSAGE_PENDING:
4171 if ((instance->pdev->device ==
4172 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4173 (instance->pdev->device ==
4174 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4175 (instance->adapter_type != MFI_SERIES))
4176 writel(MFI_INIT_HOTPLUG,
4177 &instance->reg_set->doorbell);
4178 else
4179 writel(MFI_INIT_HOTPLUG,
4180 &instance->reg_set->inbound_doorbell);
4181
4182 max_wait = MEGASAS_RESET_WAIT_TIME;
4183 break;
4184
4185 case MFI_STATE_OPERATIONAL:
4186 /*
4187 * Bring it to READY state; assuming max wait 10 secs
4188 */
4189 instance->instancet->disable_intr(instance);
4190 if ((instance->pdev->device ==
4191 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4192 (instance->pdev->device ==
4193 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4194 (instance->adapter_type != MFI_SERIES)) {
4195 writel(MFI_RESET_FLAGS,
4196 &instance->reg_set->doorbell);
4197
4198 if (instance->adapter_type != MFI_SERIES) {
4199 for (i = 0; i < (10 * 1000); i += 20) {
4200 if (megasas_readl(
4201 instance,
4202 &instance->
4203 reg_set->
4204 doorbell) & 1)
4205 msleep(20);
4206 else
4207 break;
4208 }
4209 }
4210 } else
4211 writel(MFI_RESET_FLAGS,
4212 &instance->reg_set->inbound_doorbell);
4213
4214 max_wait = MEGASAS_RESET_WAIT_TIME;
4215 break;
4216
4217 case MFI_STATE_UNDEFINED:
4218 /*
4219 * This state should not last for more than 2 seconds
4220 */
4221 max_wait = MEGASAS_RESET_WAIT_TIME;
4222 break;
4223
4224 case MFI_STATE_BB_INIT:
4225 max_wait = MEGASAS_RESET_WAIT_TIME;
4226 break;
4227
4228 case MFI_STATE_FW_INIT:
4229 max_wait = MEGASAS_RESET_WAIT_TIME;
4230 break;
4231
4232 case MFI_STATE_FW_INIT_2:
4233 max_wait = MEGASAS_RESET_WAIT_TIME;
4234 break;
4235
4236 case MFI_STATE_DEVICE_SCAN:
4237 max_wait = MEGASAS_RESET_WAIT_TIME;
4238 break;
4239
4240 case MFI_STATE_FLUSH_CACHE:
4241 max_wait = MEGASAS_RESET_WAIT_TIME;
4242 break;
4243
4244 default:
4245 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n",
4246 fw_state);
4247 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4248 megasas_dump_reg_set(instance->reg_set);
4249 return -ENODEV;
4250 }
4251
4252 /*
4253 * The cur_state should not last for more than max_wait secs
4254 */
4255 for (i = 0; i < max_wait * 50; i++) {
4256 curr_abs_state = instance->instancet->
4257 read_fw_status_reg(instance);
4258
4259 if (abs_state == curr_abs_state) {
4260 msleep(20);
4261 } else
4262 break;
4263 }
4264
4265 /*
4266 * Return error if fw_state hasn't changed after max_wait
4267 */
4268 if (curr_abs_state == abs_state) {
4269 dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed "
4270 "in %d secs\n", fw_state, max_wait);
4271 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4272 megasas_dump_reg_set(instance->reg_set);
4273 return -ENODEV;
4274 }
4275
4276 abs_state = curr_abs_state;
4277 fw_state = curr_abs_state & MFI_STATE_MASK;
4278 }
4279 dev_info(&instance->pdev->dev, "FW now in Ready state\n");
4280
4281 return 0;
4282 }
4283
4284 /**
4285 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
4286 * @instance: Adapter soft state
4287 */
megasas_teardown_frame_pool(struct megasas_instance * instance)4288 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
4289 {
4290 int i;
4291 u16 max_cmd = instance->max_mfi_cmds;
4292 struct megasas_cmd *cmd;
4293
4294 if (!instance->frame_dma_pool)
4295 return;
4296
4297 /*
4298 * Return all frames to pool
4299 */
4300 for (i = 0; i < max_cmd; i++) {
4301
4302 cmd = instance->cmd_list[i];
4303
4304 if (cmd->frame)
4305 dma_pool_free(instance->frame_dma_pool, cmd->frame,
4306 cmd->frame_phys_addr);
4307
4308 if (cmd->sense)
4309 dma_pool_free(instance->sense_dma_pool, cmd->sense,
4310 cmd->sense_phys_addr);
4311 }
4312
4313 /*
4314 * Now destroy the pool itself
4315 */
4316 dma_pool_destroy(instance->frame_dma_pool);
4317 dma_pool_destroy(instance->sense_dma_pool);
4318
4319 instance->frame_dma_pool = NULL;
4320 instance->sense_dma_pool = NULL;
4321 }
4322
4323 /**
4324 * megasas_create_frame_pool - Creates DMA pool for cmd frames
4325 * @instance: Adapter soft state
4326 *
4327 * Each command packet has an embedded DMA memory buffer that is used for
4328 * filling MFI frame and the SG list that immediately follows the frame. This
4329 * function creates those DMA memory buffers for each command packet by using
4330 * PCI pool facility.
4331 */
megasas_create_frame_pool(struct megasas_instance * instance)4332 static int megasas_create_frame_pool(struct megasas_instance *instance)
4333 {
4334 int i;
4335 u16 max_cmd;
4336 u32 frame_count;
4337 struct megasas_cmd *cmd;
4338
4339 max_cmd = instance->max_mfi_cmds;
4340
4341 /*
4342 * For MFI controllers.
4343 * max_num_sge = 60
4344 * max_sge_sz = 16 byte (sizeof megasas_sge_skinny)
4345 * Total 960 byte (15 MFI frame of 64 byte)
4346 *
4347 * Fusion adapter require only 3 extra frame.
4348 * max_num_sge = 16 (defined as MAX_IOCTL_SGE)
4349 * max_sge_sz = 12 byte (sizeof megasas_sge64)
4350 * Total 192 byte (3 MFI frame of 64 byte)
4351 */
4352 frame_count = (instance->adapter_type == MFI_SERIES) ?
4353 (15 + 1) : (3 + 1);
4354 instance->mfi_frame_size = MEGAMFI_FRAME_SIZE * frame_count;
4355 /*
4356 * Use DMA pool facility provided by PCI layer
4357 */
4358 instance->frame_dma_pool = dma_pool_create("megasas frame pool",
4359 &instance->pdev->dev,
4360 instance->mfi_frame_size, 256, 0);
4361
4362 if (!instance->frame_dma_pool) {
4363 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n");
4364 return -ENOMEM;
4365 }
4366
4367 instance->sense_dma_pool = dma_pool_create("megasas sense pool",
4368 &instance->pdev->dev, 128,
4369 4, 0);
4370
4371 if (!instance->sense_dma_pool) {
4372 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n");
4373
4374 dma_pool_destroy(instance->frame_dma_pool);
4375 instance->frame_dma_pool = NULL;
4376
4377 return -ENOMEM;
4378 }
4379
4380 /*
4381 * Allocate and attach a frame to each of the commands in cmd_list.
4382 * By making cmd->index as the context instead of the &cmd, we can
4383 * always use 32bit context regardless of the architecture
4384 */
4385 for (i = 0; i < max_cmd; i++) {
4386
4387 cmd = instance->cmd_list[i];
4388
4389 cmd->frame = dma_pool_zalloc(instance->frame_dma_pool,
4390 GFP_KERNEL, &cmd->frame_phys_addr);
4391
4392 cmd->sense = dma_pool_alloc(instance->sense_dma_pool,
4393 GFP_KERNEL, &cmd->sense_phys_addr);
4394
4395 /*
4396 * megasas_teardown_frame_pool() takes care of freeing
4397 * whatever has been allocated
4398 */
4399 if (!cmd->frame || !cmd->sense) {
4400 dev_printk(KERN_DEBUG, &instance->pdev->dev, "dma_pool_alloc failed\n");
4401 megasas_teardown_frame_pool(instance);
4402 return -ENOMEM;
4403 }
4404
4405 cmd->frame->io.context = cpu_to_le32(cmd->index);
4406 cmd->frame->io.pad_0 = 0;
4407 if ((instance->adapter_type == MFI_SERIES) && reset_devices)
4408 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
4409 }
4410
4411 return 0;
4412 }
4413
4414 /**
4415 * megasas_free_cmds - Free all the cmds in the free cmd pool
4416 * @instance: Adapter soft state
4417 */
megasas_free_cmds(struct megasas_instance * instance)4418 void megasas_free_cmds(struct megasas_instance *instance)
4419 {
4420 int i;
4421
4422 /* First free the MFI frame pool */
4423 megasas_teardown_frame_pool(instance);
4424
4425 /* Free all the commands in the cmd_list */
4426 for (i = 0; i < instance->max_mfi_cmds; i++)
4427
4428 kfree(instance->cmd_list[i]);
4429
4430 /* Free the cmd_list buffer itself */
4431 kfree(instance->cmd_list);
4432 instance->cmd_list = NULL;
4433
4434 INIT_LIST_HEAD(&instance->cmd_pool);
4435 }
4436
4437 /**
4438 * megasas_alloc_cmds - Allocates the command packets
4439 * @instance: Adapter soft state
4440 *
4441 * Each command that is issued to the FW, whether IO commands from the OS or
4442 * internal commands like IOCTLs, are wrapped in local data structure called
4443 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
4444 * the FW.
4445 *
4446 * Each frame has a 32-bit field called context (tag). This context is used
4447 * to get back the megasas_cmd from the frame when a frame gets completed in
4448 * the ISR. Typically the address of the megasas_cmd itself would be used as
4449 * the context. But we wanted to keep the differences between 32 and 64 bit
4450 * systems to the mininum. We always use 32 bit integers for the context. In
4451 * this driver, the 32 bit values are the indices into an array cmd_list.
4452 * This array is used only to look up the megasas_cmd given the context. The
4453 * free commands themselves are maintained in a linked list called cmd_pool.
4454 */
megasas_alloc_cmds(struct megasas_instance * instance)4455 int megasas_alloc_cmds(struct megasas_instance *instance)
4456 {
4457 int i;
4458 int j;
4459 u16 max_cmd;
4460 struct megasas_cmd *cmd;
4461
4462 max_cmd = instance->max_mfi_cmds;
4463
4464 /*
4465 * instance->cmd_list is an array of struct megasas_cmd pointers.
4466 * Allocate the dynamic array first and then allocate individual
4467 * commands.
4468 */
4469 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
4470
4471 if (!instance->cmd_list) {
4472 dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n");
4473 return -ENOMEM;
4474 }
4475
4476 for (i = 0; i < max_cmd; i++) {
4477 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
4478 GFP_KERNEL);
4479
4480 if (!instance->cmd_list[i]) {
4481
4482 for (j = 0; j < i; j++)
4483 kfree(instance->cmd_list[j]);
4484
4485 kfree(instance->cmd_list);
4486 instance->cmd_list = NULL;
4487
4488 return -ENOMEM;
4489 }
4490 }
4491
4492 for (i = 0; i < max_cmd; i++) {
4493 cmd = instance->cmd_list[i];
4494 memset(cmd, 0, sizeof(struct megasas_cmd));
4495 cmd->index = i;
4496 cmd->scmd = NULL;
4497 cmd->instance = instance;
4498
4499 list_add_tail(&cmd->list, &instance->cmd_pool);
4500 }
4501
4502 /*
4503 * Create a frame pool and assign one frame to each cmd
4504 */
4505 if (megasas_create_frame_pool(instance)) {
4506 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n");
4507 megasas_free_cmds(instance);
4508 return -ENOMEM;
4509 }
4510
4511 return 0;
4512 }
4513
4514 /*
4515 * dcmd_timeout_ocr_possible - Check if OCR is possible based on Driver/FW state.
4516 * @instance: Adapter soft state
4517 *
4518 * Return 0 for only Fusion adapter, if driver load/unload is not in progress
4519 * or FW is not under OCR.
4520 */
4521 inline int
dcmd_timeout_ocr_possible(struct megasas_instance * instance)4522 dcmd_timeout_ocr_possible(struct megasas_instance *instance) {
4523
4524 if (instance->adapter_type == MFI_SERIES)
4525 return KILL_ADAPTER;
4526 else if (instance->unload ||
4527 test_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE,
4528 &instance->reset_flags))
4529 return IGNORE_TIMEOUT;
4530 else
4531 return INITIATE_OCR;
4532 }
4533
4534 static void
megasas_get_pd_info(struct megasas_instance * instance,struct scsi_device * sdev)4535 megasas_get_pd_info(struct megasas_instance *instance, struct scsi_device *sdev)
4536 {
4537 int ret;
4538 struct megasas_cmd *cmd;
4539 struct megasas_dcmd_frame *dcmd;
4540
4541 struct MR_PRIV_DEVICE *mr_device_priv_data;
4542 u16 device_id = 0;
4543
4544 device_id = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id;
4545 cmd = megasas_get_cmd(instance);
4546
4547 if (!cmd) {
4548 dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__);
4549 return;
4550 }
4551
4552 dcmd = &cmd->frame->dcmd;
4553
4554 memset(instance->pd_info, 0, sizeof(*instance->pd_info));
4555 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4556
4557 dcmd->mbox.s[0] = cpu_to_le16(device_id);
4558 dcmd->cmd = MFI_CMD_DCMD;
4559 dcmd->cmd_status = 0xFF;
4560 dcmd->sge_count = 1;
4561 dcmd->flags = MFI_FRAME_DIR_READ;
4562 dcmd->timeout = 0;
4563 dcmd->pad_0 = 0;
4564 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO));
4565 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO);
4566
4567 megasas_set_dma_settings(instance, dcmd, instance->pd_info_h,
4568 sizeof(struct MR_PD_INFO));
4569
4570 if ((instance->adapter_type != MFI_SERIES) &&
4571 !instance->mask_interrupts)
4572 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4573 else
4574 ret = megasas_issue_polled(instance, cmd);
4575
4576 switch (ret) {
4577 case DCMD_SUCCESS:
4578 mr_device_priv_data = sdev->hostdata;
4579 le16_to_cpus((u16 *)&instance->pd_info->state.ddf.pdType);
4580 mr_device_priv_data->interface_type =
4581 instance->pd_info->state.ddf.pdType.intf;
4582 break;
4583
4584 case DCMD_TIMEOUT:
4585
4586 switch (dcmd_timeout_ocr_possible(instance)) {
4587 case INITIATE_OCR:
4588 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4589 mutex_unlock(&instance->reset_mutex);
4590 megasas_reset_fusion(instance->host,
4591 MFI_IO_TIMEOUT_OCR);
4592 mutex_lock(&instance->reset_mutex);
4593 break;
4594 case KILL_ADAPTER:
4595 megaraid_sas_kill_hba(instance);
4596 break;
4597 case IGNORE_TIMEOUT:
4598 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4599 __func__, __LINE__);
4600 break;
4601 }
4602
4603 break;
4604 }
4605
4606 if (ret != DCMD_TIMEOUT)
4607 megasas_return_cmd(instance, cmd);
4608
4609 return;
4610 }
4611 /*
4612 * megasas_get_pd_list_info - Returns FW's pd_list structure
4613 * @instance: Adapter soft state
4614 * @pd_list: pd_list structure
4615 *
4616 * Issues an internal command (DCMD) to get the FW's controller PD
4617 * list structure. This information is mainly used to find out SYSTEM
4618 * supported by the FW.
4619 */
4620 static int
megasas_get_pd_list(struct megasas_instance * instance)4621 megasas_get_pd_list(struct megasas_instance *instance)
4622 {
4623 int ret = 0, pd_index = 0;
4624 struct megasas_cmd *cmd;
4625 struct megasas_dcmd_frame *dcmd;
4626 struct MR_PD_LIST *ci;
4627 struct MR_PD_ADDRESS *pd_addr;
4628
4629 if (instance->pd_list_not_supported) {
4630 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4631 "not supported by firmware\n");
4632 return ret;
4633 }
4634
4635 ci = instance->pd_list_buf;
4636
4637 cmd = megasas_get_cmd(instance);
4638
4639 if (!cmd) {
4640 dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n");
4641 return -ENOMEM;
4642 }
4643
4644 dcmd = &cmd->frame->dcmd;
4645
4646 memset(ci, 0, sizeof(*ci));
4647 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4648
4649 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
4650 dcmd->mbox.b[1] = 0;
4651 dcmd->cmd = MFI_CMD_DCMD;
4652 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4653 dcmd->sge_count = 1;
4654 dcmd->flags = MFI_FRAME_DIR_READ;
4655 dcmd->timeout = 0;
4656 dcmd->pad_0 = 0;
4657 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
4658 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
4659
4660 megasas_set_dma_settings(instance, dcmd, instance->pd_list_buf_h,
4661 (MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)));
4662
4663 if ((instance->adapter_type != MFI_SERIES) &&
4664 !instance->mask_interrupts)
4665 ret = megasas_issue_blocked_cmd(instance, cmd,
4666 MFI_IO_TIMEOUT_SECS);
4667 else
4668 ret = megasas_issue_polled(instance, cmd);
4669
4670 switch (ret) {
4671 case DCMD_FAILED:
4672 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4673 "failed/not supported by firmware\n");
4674
4675 if (instance->adapter_type != MFI_SERIES)
4676 megaraid_sas_kill_hba(instance);
4677 else
4678 instance->pd_list_not_supported = 1;
4679 break;
4680 case DCMD_TIMEOUT:
4681
4682 switch (dcmd_timeout_ocr_possible(instance)) {
4683 case INITIATE_OCR:
4684 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4685 /*
4686 * DCMD failed from AEN path.
4687 * AEN path already hold reset_mutex to avoid PCI access
4688 * while OCR is in progress.
4689 */
4690 mutex_unlock(&instance->reset_mutex);
4691 megasas_reset_fusion(instance->host,
4692 MFI_IO_TIMEOUT_OCR);
4693 mutex_lock(&instance->reset_mutex);
4694 break;
4695 case KILL_ADAPTER:
4696 megaraid_sas_kill_hba(instance);
4697 break;
4698 case IGNORE_TIMEOUT:
4699 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n",
4700 __func__, __LINE__);
4701 break;
4702 }
4703
4704 break;
4705
4706 case DCMD_SUCCESS:
4707 pd_addr = ci->addr;
4708 if (megasas_dbg_lvl & LD_PD_DEBUG)
4709 dev_info(&instance->pdev->dev, "%s, sysPD count: 0x%x\n",
4710 __func__, le32_to_cpu(ci->count));
4711
4712 if ((le32_to_cpu(ci->count) >
4713 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL)))
4714 break;
4715
4716 memset(instance->local_pd_list, 0,
4717 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4718
4719 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
4720 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid =
4721 le16_to_cpu(pd_addr->deviceId);
4722 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType =
4723 pd_addr->scsiDevType;
4724 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState =
4725 MR_PD_STATE_SYSTEM;
4726 if (megasas_dbg_lvl & LD_PD_DEBUG)
4727 dev_info(&instance->pdev->dev,
4728 "PD%d: targetID: 0x%03x deviceType:0x%x\n",
4729 pd_index, le16_to_cpu(pd_addr->deviceId),
4730 pd_addr->scsiDevType);
4731 pd_addr++;
4732 }
4733
4734 memcpy(instance->pd_list, instance->local_pd_list,
4735 sizeof(instance->pd_list));
4736 break;
4737
4738 }
4739
4740 if (ret != DCMD_TIMEOUT)
4741 megasas_return_cmd(instance, cmd);
4742
4743 return ret;
4744 }
4745
4746 /*
4747 * megasas_get_ld_list_info - Returns FW's ld_list structure
4748 * @instance: Adapter soft state
4749 * @ld_list: ld_list structure
4750 *
4751 * Issues an internal command (DCMD) to get the FW's controller PD
4752 * list structure. This information is mainly used to find out SYSTEM
4753 * supported by the FW.
4754 */
4755 static int
megasas_get_ld_list(struct megasas_instance * instance)4756 megasas_get_ld_list(struct megasas_instance *instance)
4757 {
4758 int ret = 0, ld_index = 0, ids = 0;
4759 struct megasas_cmd *cmd;
4760 struct megasas_dcmd_frame *dcmd;
4761 struct MR_LD_LIST *ci;
4762 dma_addr_t ci_h = 0;
4763 u32 ld_count;
4764
4765 ci = instance->ld_list_buf;
4766 ci_h = instance->ld_list_buf_h;
4767
4768 cmd = megasas_get_cmd(instance);
4769
4770 if (!cmd) {
4771 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n");
4772 return -ENOMEM;
4773 }
4774
4775 dcmd = &cmd->frame->dcmd;
4776
4777 memset(ci, 0, sizeof(*ci));
4778 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4779
4780 if (instance->supportmax256vd)
4781 dcmd->mbox.b[0] = 1;
4782 dcmd->cmd = MFI_CMD_DCMD;
4783 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4784 dcmd->sge_count = 1;
4785 dcmd->flags = MFI_FRAME_DIR_READ;
4786 dcmd->timeout = 0;
4787 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
4788 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
4789 dcmd->pad_0 = 0;
4790
4791 megasas_set_dma_settings(instance, dcmd, ci_h,
4792 sizeof(struct MR_LD_LIST));
4793
4794 if ((instance->adapter_type != MFI_SERIES) &&
4795 !instance->mask_interrupts)
4796 ret = megasas_issue_blocked_cmd(instance, cmd,
4797 MFI_IO_TIMEOUT_SECS);
4798 else
4799 ret = megasas_issue_polled(instance, cmd);
4800
4801 ld_count = le32_to_cpu(ci->ldCount);
4802
4803 switch (ret) {
4804 case DCMD_FAILED:
4805 megaraid_sas_kill_hba(instance);
4806 break;
4807 case DCMD_TIMEOUT:
4808
4809 switch (dcmd_timeout_ocr_possible(instance)) {
4810 case INITIATE_OCR:
4811 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4812 /*
4813 * DCMD failed from AEN path.
4814 * AEN path already hold reset_mutex to avoid PCI access
4815 * while OCR is in progress.
4816 */
4817 mutex_unlock(&instance->reset_mutex);
4818 megasas_reset_fusion(instance->host,
4819 MFI_IO_TIMEOUT_OCR);
4820 mutex_lock(&instance->reset_mutex);
4821 break;
4822 case KILL_ADAPTER:
4823 megaraid_sas_kill_hba(instance);
4824 break;
4825 case IGNORE_TIMEOUT:
4826 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4827 __func__, __LINE__);
4828 break;
4829 }
4830
4831 break;
4832
4833 case DCMD_SUCCESS:
4834 if (megasas_dbg_lvl & LD_PD_DEBUG)
4835 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4836 __func__, ld_count);
4837
4838 if (ld_count > instance->fw_supported_vd_count)
4839 break;
4840
4841 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4842
4843 for (ld_index = 0; ld_index < ld_count; ld_index++) {
4844 if (ci->ldList[ld_index].state != 0) {
4845 ids = ci->ldList[ld_index].ref.targetId;
4846 instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId;
4847 if (megasas_dbg_lvl & LD_PD_DEBUG)
4848 dev_info(&instance->pdev->dev,
4849 "LD%d: targetID: 0x%03x\n",
4850 ld_index, ids);
4851 }
4852 }
4853
4854 break;
4855 }
4856
4857 if (ret != DCMD_TIMEOUT)
4858 megasas_return_cmd(instance, cmd);
4859
4860 return ret;
4861 }
4862
4863 /**
4864 * megasas_ld_list_query - Returns FW's ld_list structure
4865 * @instance: Adapter soft state
4866 * @query_type: ld_list structure type
4867 *
4868 * Issues an internal command (DCMD) to get the FW's controller PD
4869 * list structure. This information is mainly used to find out SYSTEM
4870 * supported by the FW.
4871 */
4872 static int
megasas_ld_list_query(struct megasas_instance * instance,u8 query_type)4873 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
4874 {
4875 int ret = 0, ld_index = 0, ids = 0;
4876 struct megasas_cmd *cmd;
4877 struct megasas_dcmd_frame *dcmd;
4878 struct MR_LD_TARGETID_LIST *ci;
4879 dma_addr_t ci_h = 0;
4880 u32 tgtid_count;
4881
4882 ci = instance->ld_targetid_list_buf;
4883 ci_h = instance->ld_targetid_list_buf_h;
4884
4885 cmd = megasas_get_cmd(instance);
4886
4887 if (!cmd) {
4888 dev_warn(&instance->pdev->dev,
4889 "megasas_ld_list_query: Failed to get cmd\n");
4890 return -ENOMEM;
4891 }
4892
4893 dcmd = &cmd->frame->dcmd;
4894
4895 memset(ci, 0, sizeof(*ci));
4896 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4897
4898 dcmd->mbox.b[0] = query_type;
4899 if (instance->supportmax256vd)
4900 dcmd->mbox.b[2] = 1;
4901
4902 dcmd->cmd = MFI_CMD_DCMD;
4903 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4904 dcmd->sge_count = 1;
4905 dcmd->flags = MFI_FRAME_DIR_READ;
4906 dcmd->timeout = 0;
4907 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4908 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
4909 dcmd->pad_0 = 0;
4910
4911 megasas_set_dma_settings(instance, dcmd, ci_h,
4912 sizeof(struct MR_LD_TARGETID_LIST));
4913
4914 if ((instance->adapter_type != MFI_SERIES) &&
4915 !instance->mask_interrupts)
4916 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4917 else
4918 ret = megasas_issue_polled(instance, cmd);
4919
4920 switch (ret) {
4921 case DCMD_FAILED:
4922 dev_info(&instance->pdev->dev,
4923 "DCMD not supported by firmware - %s %d\n",
4924 __func__, __LINE__);
4925 ret = megasas_get_ld_list(instance);
4926 break;
4927 case DCMD_TIMEOUT:
4928 switch (dcmd_timeout_ocr_possible(instance)) {
4929 case INITIATE_OCR:
4930 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4931 /*
4932 * DCMD failed from AEN path.
4933 * AEN path already hold reset_mutex to avoid PCI access
4934 * while OCR is in progress.
4935 */
4936 mutex_unlock(&instance->reset_mutex);
4937 megasas_reset_fusion(instance->host,
4938 MFI_IO_TIMEOUT_OCR);
4939 mutex_lock(&instance->reset_mutex);
4940 break;
4941 case KILL_ADAPTER:
4942 megaraid_sas_kill_hba(instance);
4943 break;
4944 case IGNORE_TIMEOUT:
4945 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4946 __func__, __LINE__);
4947 break;
4948 }
4949
4950 break;
4951 case DCMD_SUCCESS:
4952 tgtid_count = le32_to_cpu(ci->count);
4953
4954 if (megasas_dbg_lvl & LD_PD_DEBUG)
4955 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4956 __func__, tgtid_count);
4957
4958 if ((tgtid_count > (instance->fw_supported_vd_count)))
4959 break;
4960
4961 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4962 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
4963 ids = ci->targetId[ld_index];
4964 instance->ld_ids[ids] = ci->targetId[ld_index];
4965 if (megasas_dbg_lvl & LD_PD_DEBUG)
4966 dev_info(&instance->pdev->dev, "LD%d: targetID: 0x%03x\n",
4967 ld_index, ci->targetId[ld_index]);
4968 }
4969
4970 break;
4971 }
4972
4973 if (ret != DCMD_TIMEOUT)
4974 megasas_return_cmd(instance, cmd);
4975
4976 return ret;
4977 }
4978
4979 /**
4980 * megasas_host_device_list_query
4981 * dcmd.opcode - MR_DCMD_CTRL_DEVICE_LIST_GET
4982 * dcmd.mbox - reserved
4983 * dcmd.sge IN - ptr to return MR_HOST_DEVICE_LIST structure
4984 * Desc: This DCMD will return the combined device list
4985 * Status: MFI_STAT_OK - List returned successfully
4986 * MFI_STAT_INVALID_CMD - Firmware support for the feature has been
4987 * disabled
4988 * @instance: Adapter soft state
4989 * @is_probe: Driver probe check
4990 * Return: 0 if DCMD succeeded
4991 * non-zero if failed
4992 */
4993 static int
megasas_host_device_list_query(struct megasas_instance * instance,bool is_probe)4994 megasas_host_device_list_query(struct megasas_instance *instance,
4995 bool is_probe)
4996 {
4997 int ret, i, target_id;
4998 struct megasas_cmd *cmd;
4999 struct megasas_dcmd_frame *dcmd;
5000 struct MR_HOST_DEVICE_LIST *ci;
5001 u32 count;
5002 dma_addr_t ci_h;
5003
5004 ci = instance->host_device_list_buf;
5005 ci_h = instance->host_device_list_buf_h;
5006
5007 cmd = megasas_get_cmd(instance);
5008
5009 if (!cmd) {
5010 dev_warn(&instance->pdev->dev,
5011 "%s: failed to get cmd\n",
5012 __func__);
5013 return -ENOMEM;
5014 }
5015
5016 dcmd = &cmd->frame->dcmd;
5017
5018 memset(ci, 0, sizeof(*ci));
5019 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5020
5021 dcmd->mbox.b[0] = is_probe ? 0 : 1;
5022 dcmd->cmd = MFI_CMD_DCMD;
5023 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5024 dcmd->sge_count = 1;
5025 dcmd->flags = MFI_FRAME_DIR_READ;
5026 dcmd->timeout = 0;
5027 dcmd->pad_0 = 0;
5028 dcmd->data_xfer_len = cpu_to_le32(HOST_DEVICE_LIST_SZ);
5029 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_DEVICE_LIST_GET);
5030
5031 megasas_set_dma_settings(instance, dcmd, ci_h, HOST_DEVICE_LIST_SZ);
5032
5033 if (!instance->mask_interrupts) {
5034 ret = megasas_issue_blocked_cmd(instance, cmd,
5035 MFI_IO_TIMEOUT_SECS);
5036 } else {
5037 ret = megasas_issue_polled(instance, cmd);
5038 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5039 }
5040
5041 switch (ret) {
5042 case DCMD_SUCCESS:
5043 /* Fill the internal pd_list and ld_ids array based on
5044 * targetIds returned by FW
5045 */
5046 count = le32_to_cpu(ci->count);
5047
5048 if (count > (MEGASAS_MAX_PD + MAX_LOGICAL_DRIVES_EXT))
5049 break;
5050
5051 if (megasas_dbg_lvl & LD_PD_DEBUG)
5052 dev_info(&instance->pdev->dev, "%s, Device count: 0x%x\n",
5053 __func__, count);
5054
5055 memset(instance->local_pd_list, 0,
5056 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
5057 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
5058 for (i = 0; i < count; i++) {
5059 target_id = le16_to_cpu(ci->host_device_list[i].target_id);
5060 if (ci->host_device_list[i].flags.u.bits.is_sys_pd) {
5061 instance->local_pd_list[target_id].tid = target_id;
5062 instance->local_pd_list[target_id].driveType =
5063 ci->host_device_list[i].scsi_type;
5064 instance->local_pd_list[target_id].driveState =
5065 MR_PD_STATE_SYSTEM;
5066 if (megasas_dbg_lvl & LD_PD_DEBUG)
5067 dev_info(&instance->pdev->dev,
5068 "Device %d: PD targetID: 0x%03x deviceType:0x%x\n",
5069 i, target_id, ci->host_device_list[i].scsi_type);
5070 } else {
5071 instance->ld_ids[target_id] = target_id;
5072 if (megasas_dbg_lvl & LD_PD_DEBUG)
5073 dev_info(&instance->pdev->dev,
5074 "Device %d: LD targetID: 0x%03x\n",
5075 i, target_id);
5076 }
5077 }
5078
5079 memcpy(instance->pd_list, instance->local_pd_list,
5080 sizeof(instance->pd_list));
5081 break;
5082
5083 case DCMD_TIMEOUT:
5084 switch (dcmd_timeout_ocr_possible(instance)) {
5085 case INITIATE_OCR:
5086 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5087 mutex_unlock(&instance->reset_mutex);
5088 megasas_reset_fusion(instance->host,
5089 MFI_IO_TIMEOUT_OCR);
5090 mutex_lock(&instance->reset_mutex);
5091 break;
5092 case KILL_ADAPTER:
5093 megaraid_sas_kill_hba(instance);
5094 break;
5095 case IGNORE_TIMEOUT:
5096 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5097 __func__, __LINE__);
5098 break;
5099 }
5100 break;
5101 case DCMD_FAILED:
5102 dev_err(&instance->pdev->dev,
5103 "%s: MR_DCMD_CTRL_DEVICE_LIST_GET failed\n",
5104 __func__);
5105 break;
5106 }
5107
5108 if (ret != DCMD_TIMEOUT)
5109 megasas_return_cmd(instance, cmd);
5110
5111 return ret;
5112 }
5113
5114 /*
5115 * megasas_update_ext_vd_details : Update details w.r.t Extended VD
5116 * instance : Controller's instance
5117 */
megasas_update_ext_vd_details(struct megasas_instance * instance)5118 static void megasas_update_ext_vd_details(struct megasas_instance *instance)
5119 {
5120 struct fusion_context *fusion;
5121 u32 ventura_map_sz = 0;
5122
5123 fusion = instance->ctrl_context;
5124 /* For MFI based controllers return dummy success */
5125 if (!fusion)
5126 return;
5127
5128 instance->supportmax256vd =
5129 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs;
5130 /* Below is additional check to address future FW enhancement */
5131 if (instance->ctrl_info_buf->max_lds > 64)
5132 instance->supportmax256vd = 1;
5133
5134 instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
5135 * MEGASAS_MAX_DEV_PER_CHANNEL;
5136 instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS
5137 * MEGASAS_MAX_DEV_PER_CHANNEL;
5138 if (instance->supportmax256vd) {
5139 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT;
5140 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5141 } else {
5142 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
5143 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5144 }
5145
5146 dev_info(&instance->pdev->dev,
5147 "FW provided supportMaxExtLDs: %d\tmax_lds: %d\n",
5148 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs ? 1 : 0,
5149 instance->ctrl_info_buf->max_lds);
5150
5151 if (instance->max_raid_mapsize) {
5152 ventura_map_sz = instance->max_raid_mapsize *
5153 MR_MIN_MAP_SIZE; /* 64k */
5154 fusion->current_map_sz = ventura_map_sz;
5155 fusion->max_map_sz = ventura_map_sz;
5156 } else {
5157 fusion->old_map_sz =
5158 struct_size_t(struct MR_FW_RAID_MAP, ldSpanMap,
5159 instance->fw_supported_vd_count);
5160 fusion->new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT);
5161
5162 fusion->max_map_sz =
5163 max(fusion->old_map_sz, fusion->new_map_sz);
5164
5165 if (instance->supportmax256vd)
5166 fusion->current_map_sz = fusion->new_map_sz;
5167 else
5168 fusion->current_map_sz = fusion->old_map_sz;
5169 }
5170 /* irrespective of FW raid maps, driver raid map is constant */
5171 fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP_ALL);
5172 }
5173
5174 /*
5175 * dcmd.opcode - MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES
5176 * dcmd.hdr.length - number of bytes to read
5177 * dcmd.sge - Ptr to MR_SNAPDUMP_PROPERTIES
5178 * Desc: Fill in snapdump properties
5179 * Status: MFI_STAT_OK- Command successful
5180 */
megasas_get_snapdump_properties(struct megasas_instance * instance)5181 void megasas_get_snapdump_properties(struct megasas_instance *instance)
5182 {
5183 int ret = 0;
5184 struct megasas_cmd *cmd;
5185 struct megasas_dcmd_frame *dcmd;
5186 struct MR_SNAPDUMP_PROPERTIES *ci;
5187 dma_addr_t ci_h = 0;
5188
5189 ci = instance->snapdump_prop;
5190 ci_h = instance->snapdump_prop_h;
5191
5192 if (!ci)
5193 return;
5194
5195 cmd = megasas_get_cmd(instance);
5196
5197 if (!cmd) {
5198 dev_dbg(&instance->pdev->dev, "Failed to get a free cmd\n");
5199 return;
5200 }
5201
5202 dcmd = &cmd->frame->dcmd;
5203
5204 memset(ci, 0, sizeof(*ci));
5205 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5206
5207 dcmd->cmd = MFI_CMD_DCMD;
5208 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5209 dcmd->sge_count = 1;
5210 dcmd->flags = MFI_FRAME_DIR_READ;
5211 dcmd->timeout = 0;
5212 dcmd->pad_0 = 0;
5213 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_SNAPDUMP_PROPERTIES));
5214 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES);
5215
5216 megasas_set_dma_settings(instance, dcmd, ci_h,
5217 sizeof(struct MR_SNAPDUMP_PROPERTIES));
5218
5219 if (!instance->mask_interrupts) {
5220 ret = megasas_issue_blocked_cmd(instance, cmd,
5221 MFI_IO_TIMEOUT_SECS);
5222 } else {
5223 ret = megasas_issue_polled(instance, cmd);
5224 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5225 }
5226
5227 switch (ret) {
5228 case DCMD_SUCCESS:
5229 instance->snapdump_wait_time =
5230 min_t(u8, ci->trigger_min_num_sec_before_ocr,
5231 MEGASAS_MAX_SNAP_DUMP_WAIT_TIME);
5232 break;
5233
5234 case DCMD_TIMEOUT:
5235 switch (dcmd_timeout_ocr_possible(instance)) {
5236 case INITIATE_OCR:
5237 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5238 mutex_unlock(&instance->reset_mutex);
5239 megasas_reset_fusion(instance->host,
5240 MFI_IO_TIMEOUT_OCR);
5241 mutex_lock(&instance->reset_mutex);
5242 break;
5243 case KILL_ADAPTER:
5244 megaraid_sas_kill_hba(instance);
5245 break;
5246 case IGNORE_TIMEOUT:
5247 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5248 __func__, __LINE__);
5249 break;
5250 }
5251 }
5252
5253 if (ret != DCMD_TIMEOUT)
5254 megasas_return_cmd(instance, cmd);
5255 }
5256
5257 /**
5258 * megasas_get_ctrl_info - Returns FW's controller structure
5259 * @instance: Adapter soft state
5260 *
5261 * Issues an internal command (DCMD) to get the FW's controller structure.
5262 * This information is mainly used to find out the maximum IO transfer per
5263 * command supported by the FW.
5264 */
5265 int
megasas_get_ctrl_info(struct megasas_instance * instance)5266 megasas_get_ctrl_info(struct megasas_instance *instance)
5267 {
5268 int ret = 0;
5269 struct megasas_cmd *cmd;
5270 struct megasas_dcmd_frame *dcmd;
5271 struct megasas_ctrl_info *ci;
5272 dma_addr_t ci_h = 0;
5273
5274 ci = instance->ctrl_info_buf;
5275 ci_h = instance->ctrl_info_buf_h;
5276
5277 cmd = megasas_get_cmd(instance);
5278
5279 if (!cmd) {
5280 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n");
5281 return -ENOMEM;
5282 }
5283
5284 dcmd = &cmd->frame->dcmd;
5285
5286 memset(ci, 0, sizeof(*ci));
5287 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5288
5289 dcmd->cmd = MFI_CMD_DCMD;
5290 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5291 dcmd->sge_count = 1;
5292 dcmd->flags = MFI_FRAME_DIR_READ;
5293 dcmd->timeout = 0;
5294 dcmd->pad_0 = 0;
5295 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
5296 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
5297 dcmd->mbox.b[0] = 1;
5298
5299 megasas_set_dma_settings(instance, dcmd, ci_h,
5300 sizeof(struct megasas_ctrl_info));
5301
5302 if ((instance->adapter_type != MFI_SERIES) &&
5303 !instance->mask_interrupts) {
5304 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5305 } else {
5306 ret = megasas_issue_polled(instance, cmd);
5307 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5308 }
5309
5310 switch (ret) {
5311 case DCMD_SUCCESS:
5312 /* Save required controller information in
5313 * CPU endianness format.
5314 */
5315 le32_to_cpus((u32 *)&ci->properties.OnOffProperties);
5316 le16_to_cpus((u16 *)&ci->properties.on_off_properties2);
5317 le32_to_cpus((u32 *)&ci->adapterOperations2);
5318 le32_to_cpus((u32 *)&ci->adapterOperations3);
5319 le16_to_cpus((u16 *)&ci->adapter_operations4);
5320 le32_to_cpus((u32 *)&ci->adapter_operations5);
5321
5322 /* Update the latest Ext VD info.
5323 * From Init path, store current firmware details.
5324 * From OCR path, detect any firmware properties changes.
5325 * in case of Firmware upgrade without system reboot.
5326 */
5327 megasas_update_ext_vd_details(instance);
5328 instance->support_seqnum_jbod_fp =
5329 ci->adapterOperations3.useSeqNumJbodFP;
5330 instance->support_morethan256jbod =
5331 ci->adapter_operations4.support_pd_map_target_id;
5332 instance->support_nvme_passthru =
5333 ci->adapter_operations4.support_nvme_passthru;
5334 instance->support_pci_lane_margining =
5335 ci->adapter_operations5.support_pci_lane_margining;
5336 instance->task_abort_tmo = ci->TaskAbortTO;
5337 instance->max_reset_tmo = ci->MaxResetTO;
5338
5339 /*Check whether controller is iMR or MR */
5340 instance->is_imr = (ci->memory_size ? 0 : 1);
5341
5342 instance->snapdump_wait_time =
5343 (ci->properties.on_off_properties2.enable_snap_dump ?
5344 MEGASAS_DEFAULT_SNAP_DUMP_WAIT_TIME : 0);
5345
5346 instance->enable_fw_dev_list =
5347 ci->properties.on_off_properties2.enable_fw_dev_list;
5348
5349 dev_info(&instance->pdev->dev,
5350 "controller type\t: %s(%dMB)\n",
5351 instance->is_imr ? "iMR" : "MR",
5352 le16_to_cpu(ci->memory_size));
5353
5354 instance->disableOnlineCtrlReset =
5355 ci->properties.OnOffProperties.disableOnlineCtrlReset;
5356 instance->secure_jbod_support =
5357 ci->adapterOperations3.supportSecurityonJBOD;
5358 dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n",
5359 instance->disableOnlineCtrlReset ? "Disabled" : "Enabled");
5360 dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n",
5361 instance->secure_jbod_support ? "Yes" : "No");
5362 dev_info(&instance->pdev->dev, "NVMe passthru support\t: %s\n",
5363 instance->support_nvme_passthru ? "Yes" : "No");
5364 dev_info(&instance->pdev->dev,
5365 "FW provided TM TaskAbort/Reset timeout\t: %d secs/%d secs\n",
5366 instance->task_abort_tmo, instance->max_reset_tmo);
5367 dev_info(&instance->pdev->dev, "JBOD sequence map support\t: %s\n",
5368 instance->support_seqnum_jbod_fp ? "Yes" : "No");
5369 dev_info(&instance->pdev->dev, "PCI Lane Margining support\t: %s\n",
5370 instance->support_pci_lane_margining ? "Yes" : "No");
5371
5372 break;
5373
5374 case DCMD_TIMEOUT:
5375 switch (dcmd_timeout_ocr_possible(instance)) {
5376 case INITIATE_OCR:
5377 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5378 mutex_unlock(&instance->reset_mutex);
5379 megasas_reset_fusion(instance->host,
5380 MFI_IO_TIMEOUT_OCR);
5381 mutex_lock(&instance->reset_mutex);
5382 break;
5383 case KILL_ADAPTER:
5384 megaraid_sas_kill_hba(instance);
5385 break;
5386 case IGNORE_TIMEOUT:
5387 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5388 __func__, __LINE__);
5389 break;
5390 }
5391 break;
5392 case DCMD_FAILED:
5393 megaraid_sas_kill_hba(instance);
5394 break;
5395
5396 }
5397
5398 if (ret != DCMD_TIMEOUT)
5399 megasas_return_cmd(instance, cmd);
5400
5401 return ret;
5402 }
5403
5404 /*
5405 * megasas_set_crash_dump_params - Sends address of crash dump DMA buffer
5406 * to firmware
5407 *
5408 * @instance: Adapter soft state
5409 * @crash_buf_state - tell FW to turn ON/OFF crash dump feature
5410 MR_CRASH_BUF_TURN_OFF = 0
5411 MR_CRASH_BUF_TURN_ON = 1
5412 * @return 0 on success non-zero on failure.
5413 * Issues an internal command (DCMD) to set parameters for crash dump feature.
5414 * Driver will send address of crash dump DMA buffer and set mbox to tell FW
5415 * that driver supports crash dump feature. This DCMD will be sent only if
5416 * crash dump feature is supported by the FW.
5417 *
5418 */
megasas_set_crash_dump_params(struct megasas_instance * instance,u8 crash_buf_state)5419 int megasas_set_crash_dump_params(struct megasas_instance *instance,
5420 u8 crash_buf_state)
5421 {
5422 int ret = 0;
5423 struct megasas_cmd *cmd;
5424 struct megasas_dcmd_frame *dcmd;
5425
5426 cmd = megasas_get_cmd(instance);
5427
5428 if (!cmd) {
5429 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n");
5430 return -ENOMEM;
5431 }
5432
5433
5434 dcmd = &cmd->frame->dcmd;
5435
5436 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5437 dcmd->mbox.b[0] = crash_buf_state;
5438 dcmd->cmd = MFI_CMD_DCMD;
5439 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5440 dcmd->sge_count = 1;
5441 dcmd->flags = MFI_FRAME_DIR_NONE;
5442 dcmd->timeout = 0;
5443 dcmd->pad_0 = 0;
5444 dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
5445 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
5446
5447 megasas_set_dma_settings(instance, dcmd, instance->crash_dump_h,
5448 CRASH_DMA_BUF_SIZE);
5449
5450 if ((instance->adapter_type != MFI_SERIES) &&
5451 !instance->mask_interrupts)
5452 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5453 else
5454 ret = megasas_issue_polled(instance, cmd);
5455
5456 if (ret == DCMD_TIMEOUT) {
5457 switch (dcmd_timeout_ocr_possible(instance)) {
5458 case INITIATE_OCR:
5459 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5460 megasas_reset_fusion(instance->host,
5461 MFI_IO_TIMEOUT_OCR);
5462 break;
5463 case KILL_ADAPTER:
5464 megaraid_sas_kill_hba(instance);
5465 break;
5466 case IGNORE_TIMEOUT:
5467 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5468 __func__, __LINE__);
5469 break;
5470 }
5471 } else
5472 megasas_return_cmd(instance, cmd);
5473
5474 return ret;
5475 }
5476
5477 /**
5478 * megasas_issue_init_mfi - Initializes the FW
5479 * @instance: Adapter soft state
5480 *
5481 * Issues the INIT MFI cmd
5482 */
5483 static int
megasas_issue_init_mfi(struct megasas_instance * instance)5484 megasas_issue_init_mfi(struct megasas_instance *instance)
5485 {
5486 __le32 context;
5487 struct megasas_cmd *cmd;
5488 struct megasas_init_frame *init_frame;
5489 struct megasas_init_queue_info *initq_info;
5490 dma_addr_t init_frame_h;
5491 dma_addr_t initq_info_h;
5492
5493 /*
5494 * Prepare a init frame. Note the init frame points to queue info
5495 * structure. Each frame has SGL allocated after first 64 bytes. For
5496 * this frame - since we don't need any SGL - we use SGL's space as
5497 * queue info structure
5498 *
5499 * We will not get a NULL command below. We just created the pool.
5500 */
5501 cmd = megasas_get_cmd(instance);
5502
5503 init_frame = (struct megasas_init_frame *)cmd->frame;
5504 initq_info = (struct megasas_init_queue_info *)
5505 ((unsigned long)init_frame + 64);
5506
5507 init_frame_h = cmd->frame_phys_addr;
5508 initq_info_h = init_frame_h + 64;
5509
5510 context = init_frame->context;
5511 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
5512 memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
5513 init_frame->context = context;
5514
5515 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
5516 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
5517
5518 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
5519 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
5520
5521 init_frame->cmd = MFI_CMD_INIT;
5522 init_frame->cmd_status = MFI_STAT_INVALID_STATUS;
5523 init_frame->queue_info_new_phys_addr_lo =
5524 cpu_to_le32(lower_32_bits(initq_info_h));
5525 init_frame->queue_info_new_phys_addr_hi =
5526 cpu_to_le32(upper_32_bits(initq_info_h));
5527
5528 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
5529
5530 /*
5531 * disable the intr before firing the init frame to FW
5532 */
5533 instance->instancet->disable_intr(instance);
5534
5535 /*
5536 * Issue the init frame in polled mode
5537 */
5538
5539 if (megasas_issue_polled(instance, cmd)) {
5540 dev_err(&instance->pdev->dev, "Failed to init firmware\n");
5541 megasas_return_cmd(instance, cmd);
5542 goto fail_fw_init;
5543 }
5544
5545 megasas_return_cmd(instance, cmd);
5546
5547 return 0;
5548
5549 fail_fw_init:
5550 return -EINVAL;
5551 }
5552
5553 static u32
megasas_init_adapter_mfi(struct megasas_instance * instance)5554 megasas_init_adapter_mfi(struct megasas_instance *instance)
5555 {
5556 u32 context_sz;
5557 u32 reply_q_sz;
5558
5559 /*
5560 * Get various operational parameters from status register
5561 */
5562 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(instance) & 0x00FFFF;
5563 /*
5564 * Reduce the max supported cmds by 1. This is to ensure that the
5565 * reply_q_sz (1 more than the max cmd that driver may send)
5566 * does not exceed max cmds that the FW can support
5567 */
5568 instance->max_fw_cmds = instance->max_fw_cmds-1;
5569 instance->max_mfi_cmds = instance->max_fw_cmds;
5570 instance->max_num_sge = (instance->instancet->read_fw_status_reg(instance) & 0xFF0000) >>
5571 0x10;
5572 /*
5573 * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands
5574 * are reserved for IOCTL + driver's internal DCMDs.
5575 */
5576 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
5577 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
5578 instance->max_scsi_cmds = (instance->max_fw_cmds -
5579 MEGASAS_SKINNY_INT_CMDS);
5580 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
5581 } else {
5582 instance->max_scsi_cmds = (instance->max_fw_cmds -
5583 MEGASAS_INT_CMDS);
5584 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS));
5585 }
5586
5587 instance->cur_can_queue = instance->max_scsi_cmds;
5588 /*
5589 * Create a pool of commands
5590 */
5591 if (megasas_alloc_cmds(instance))
5592 goto fail_alloc_cmds;
5593
5594 /*
5595 * Allocate memory for reply queue. Length of reply queue should
5596 * be _one_ more than the maximum commands handled by the firmware.
5597 *
5598 * Note: When FW completes commands, it places corresponding contex
5599 * values in this circular reply queue. This circular queue is a fairly
5600 * typical producer-consumer queue. FW is the producer (of completed
5601 * commands) and the driver is the consumer.
5602 */
5603 context_sz = sizeof(u32);
5604 reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
5605
5606 instance->reply_queue = dma_alloc_coherent(&instance->pdev->dev,
5607 reply_q_sz, &instance->reply_queue_h, GFP_KERNEL);
5608
5609 if (!instance->reply_queue) {
5610 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n");
5611 goto fail_reply_queue;
5612 }
5613
5614 if (megasas_issue_init_mfi(instance))
5615 goto fail_fw_init;
5616
5617 if (megasas_get_ctrl_info(instance)) {
5618 dev_err(&instance->pdev->dev, "(%d): Could get controller info "
5619 "Fail from %s %d\n", instance->unique_id,
5620 __func__, __LINE__);
5621 goto fail_fw_init;
5622 }
5623
5624 instance->fw_support_ieee = 0;
5625 instance->fw_support_ieee =
5626 (instance->instancet->read_fw_status_reg(instance) &
5627 0x04000000);
5628
5629 dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d",
5630 instance->fw_support_ieee);
5631
5632 if (instance->fw_support_ieee)
5633 instance->flag_ieee = 1;
5634
5635 return 0;
5636
5637 fail_fw_init:
5638
5639 dma_free_coherent(&instance->pdev->dev, reply_q_sz,
5640 instance->reply_queue, instance->reply_queue_h);
5641 fail_reply_queue:
5642 megasas_free_cmds(instance);
5643
5644 fail_alloc_cmds:
5645 return 1;
5646 }
5647
5648 static
megasas_setup_irq_poll(struct megasas_instance * instance)5649 void megasas_setup_irq_poll(struct megasas_instance *instance)
5650 {
5651 struct megasas_irq_context *irq_ctx;
5652 u32 count, i;
5653
5654 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5655
5656 /* Initialize IRQ poll */
5657 for (i = 0; i < count; i++) {
5658 irq_ctx = &instance->irq_context[i];
5659 irq_ctx->os_irq = pci_irq_vector(instance->pdev, i);
5660 irq_ctx->irq_poll_scheduled = false;
5661 irq_poll_init(&irq_ctx->irqpoll,
5662 instance->threshold_reply_count,
5663 megasas_irqpoll);
5664 }
5665 }
5666
5667 /*
5668 * megasas_setup_irqs_ioapic - register legacy interrupts.
5669 * @instance: Adapter soft state
5670 *
5671 * Do not enable interrupt, only setup ISRs.
5672 *
5673 * Return 0 on success.
5674 */
5675 static int
megasas_setup_irqs_ioapic(struct megasas_instance * instance)5676 megasas_setup_irqs_ioapic(struct megasas_instance *instance)
5677 {
5678 struct pci_dev *pdev;
5679
5680 pdev = instance->pdev;
5681 instance->irq_context[0].instance = instance;
5682 instance->irq_context[0].MSIxIndex = 0;
5683 snprintf(instance->irq_context->name, MEGASAS_MSIX_NAME_LEN, "%s%u",
5684 "megasas", instance->host->host_no);
5685 if (request_irq(pci_irq_vector(pdev, 0),
5686 instance->instancet->service_isr, IRQF_SHARED,
5687 instance->irq_context->name, &instance->irq_context[0])) {
5688 dev_err(&instance->pdev->dev,
5689 "Failed to register IRQ from %s %d\n",
5690 __func__, __LINE__);
5691 return -1;
5692 }
5693 instance->perf_mode = MR_LATENCY_PERF_MODE;
5694 instance->low_latency_index_start = 0;
5695 return 0;
5696 }
5697
5698 /**
5699 * megasas_setup_irqs_msix - register MSI-x interrupts.
5700 * @instance: Adapter soft state
5701 * @is_probe: Driver probe check
5702 *
5703 * Do not enable interrupt, only setup ISRs.
5704 *
5705 * Return 0 on success.
5706 */
5707 static int
megasas_setup_irqs_msix(struct megasas_instance * instance,u8 is_probe)5708 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe)
5709 {
5710 int i, j;
5711 struct pci_dev *pdev;
5712
5713 pdev = instance->pdev;
5714
5715 /* Try MSI-x */
5716 for (i = 0; i < instance->msix_vectors; i++) {
5717 instance->irq_context[i].instance = instance;
5718 instance->irq_context[i].MSIxIndex = i;
5719 snprintf(instance->irq_context[i].name, MEGASAS_MSIX_NAME_LEN, "%s%u-msix%u",
5720 "megasas", instance->host->host_no, i);
5721 if (request_irq(pci_irq_vector(pdev, i),
5722 instance->instancet->service_isr, 0, instance->irq_context[i].name,
5723 &instance->irq_context[i])) {
5724 dev_err(&instance->pdev->dev,
5725 "Failed to register IRQ for vector %d.\n", i);
5726 for (j = 0; j < i; j++) {
5727 if (j < instance->low_latency_index_start)
5728 irq_update_affinity_hint(
5729 pci_irq_vector(pdev, j), NULL);
5730 free_irq(pci_irq_vector(pdev, j),
5731 &instance->irq_context[j]);
5732 }
5733 /* Retry irq register for IO_APIC*/
5734 instance->msix_vectors = 0;
5735 instance->msix_load_balance = false;
5736 if (is_probe) {
5737 pci_free_irq_vectors(instance->pdev);
5738 return megasas_setup_irqs_ioapic(instance);
5739 } else {
5740 return -1;
5741 }
5742 }
5743 }
5744
5745 return 0;
5746 }
5747
5748 /*
5749 * megasas_destroy_irqs- unregister interrupts.
5750 * @instance: Adapter soft state
5751 * return: void
5752 */
5753 static void
megasas_destroy_irqs(struct megasas_instance * instance)5754 megasas_destroy_irqs(struct megasas_instance *instance) {
5755
5756 int i;
5757 int count;
5758 struct megasas_irq_context *irq_ctx;
5759
5760 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5761 if (instance->adapter_type != MFI_SERIES) {
5762 for (i = 0; i < count; i++) {
5763 irq_ctx = &instance->irq_context[i];
5764 irq_poll_disable(&irq_ctx->irqpoll);
5765 }
5766 }
5767
5768 if (instance->msix_vectors)
5769 for (i = 0; i < instance->msix_vectors; i++) {
5770 if (i < instance->low_latency_index_start)
5771 irq_update_affinity_hint(
5772 pci_irq_vector(instance->pdev, i), NULL);
5773 free_irq(pci_irq_vector(instance->pdev, i),
5774 &instance->irq_context[i]);
5775 }
5776 else
5777 free_irq(pci_irq_vector(instance->pdev, 0),
5778 &instance->irq_context[0]);
5779 }
5780
5781 /**
5782 * megasas_setup_jbod_map - setup jbod map for FP seq_number.
5783 * @instance: Adapter soft state
5784 *
5785 * Return 0 on success.
5786 */
5787 void
megasas_setup_jbod_map(struct megasas_instance * instance)5788 megasas_setup_jbod_map(struct megasas_instance *instance)
5789 {
5790 int i;
5791 struct fusion_context *fusion = instance->ctrl_context;
5792 size_t pd_seq_map_sz;
5793
5794 pd_seq_map_sz = struct_size_t(struct MR_PD_CFG_SEQ_NUM_SYNC, seq,
5795 MAX_PHYSICAL_DEVICES);
5796
5797 instance->use_seqnum_jbod_fp =
5798 instance->support_seqnum_jbod_fp;
5799 if (reset_devices || !fusion ||
5800 !instance->support_seqnum_jbod_fp) {
5801 dev_info(&instance->pdev->dev,
5802 "JBOD sequence map is disabled %s %d\n",
5803 __func__, __LINE__);
5804 instance->use_seqnum_jbod_fp = false;
5805 return;
5806 }
5807
5808 if (fusion->pd_seq_sync[0])
5809 goto skip_alloc;
5810
5811 for (i = 0; i < JBOD_MAPS_COUNT; i++) {
5812 fusion->pd_seq_sync[i] = dma_alloc_coherent
5813 (&instance->pdev->dev, pd_seq_map_sz,
5814 &fusion->pd_seq_phys[i], GFP_KERNEL);
5815 if (!fusion->pd_seq_sync[i]) {
5816 dev_err(&instance->pdev->dev,
5817 "Failed to allocate memory from %s %d\n",
5818 __func__, __LINE__);
5819 if (i == 1) {
5820 dma_free_coherent(&instance->pdev->dev,
5821 pd_seq_map_sz, fusion->pd_seq_sync[0],
5822 fusion->pd_seq_phys[0]);
5823 fusion->pd_seq_sync[0] = NULL;
5824 }
5825 instance->use_seqnum_jbod_fp = false;
5826 return;
5827 }
5828 }
5829
5830 skip_alloc:
5831 if (!megasas_sync_pd_seq_num(instance, false) &&
5832 !megasas_sync_pd_seq_num(instance, true))
5833 instance->use_seqnum_jbod_fp = true;
5834 else
5835 instance->use_seqnum_jbod_fp = false;
5836 }
5837
megasas_setup_reply_map(struct megasas_instance * instance)5838 static void megasas_setup_reply_map(struct megasas_instance *instance)
5839 {
5840 const struct cpumask *mask;
5841 unsigned int queue, cpu, low_latency_index_start;
5842
5843 low_latency_index_start = instance->low_latency_index_start;
5844
5845 for (queue = low_latency_index_start; queue < instance->msix_vectors; queue++) {
5846 mask = pci_irq_get_affinity(instance->pdev, queue);
5847 if (!mask)
5848 goto fallback;
5849
5850 for_each_cpu(cpu, mask)
5851 instance->reply_map[cpu] = queue;
5852 }
5853 return;
5854
5855 fallback:
5856 queue = low_latency_index_start;
5857 for_each_possible_cpu(cpu) {
5858 instance->reply_map[cpu] = queue;
5859 if (queue == (instance->msix_vectors - 1))
5860 queue = low_latency_index_start;
5861 else
5862 queue++;
5863 }
5864 }
5865
5866 /**
5867 * megasas_get_device_list - Get the PD and LD device list from FW.
5868 * @instance: Adapter soft state
5869 * @return: Success or failure
5870 *
5871 * Issue DCMDs to Firmware to get the PD and LD list.
5872 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
5873 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
5874 */
5875 static
megasas_get_device_list(struct megasas_instance * instance)5876 int megasas_get_device_list(struct megasas_instance *instance)
5877 {
5878 if (instance->enable_fw_dev_list) {
5879 if (megasas_host_device_list_query(instance, true))
5880 return FAILED;
5881 } else {
5882 if (megasas_get_pd_list(instance) < 0) {
5883 dev_err(&instance->pdev->dev, "failed to get PD list\n");
5884 return FAILED;
5885 }
5886
5887 if (megasas_ld_list_query(instance,
5888 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) {
5889 dev_err(&instance->pdev->dev, "failed to get LD list\n");
5890 return FAILED;
5891 }
5892 }
5893
5894 return SUCCESS;
5895 }
5896
5897 /**
5898 * megasas_set_high_iops_queue_affinity_and_hint - Set affinity and hint
5899 * for high IOPS queues
5900 * @instance: Adapter soft state
5901 * return: void
5902 */
5903 static inline void
megasas_set_high_iops_queue_affinity_and_hint(struct megasas_instance * instance)5904 megasas_set_high_iops_queue_affinity_and_hint(struct megasas_instance *instance)
5905 {
5906 int i;
5907 unsigned int irq;
5908 const struct cpumask *mask;
5909
5910 if (instance->perf_mode == MR_BALANCED_PERF_MODE) {
5911 mask = cpumask_of_node(dev_to_node(&instance->pdev->dev));
5912
5913 for (i = 0; i < instance->low_latency_index_start; i++) {
5914 irq = pci_irq_vector(instance->pdev, i);
5915 irq_set_affinity_and_hint(irq, mask);
5916 }
5917 }
5918 }
5919
5920 static int
__megasas_alloc_irq_vectors(struct megasas_instance * instance)5921 __megasas_alloc_irq_vectors(struct megasas_instance *instance)
5922 {
5923 int i, irq_flags;
5924 struct irq_affinity desc = { .pre_vectors = instance->low_latency_index_start };
5925 struct irq_affinity *descp = &desc;
5926
5927 irq_flags = PCI_IRQ_MSIX;
5928
5929 if (instance->smp_affinity_enable)
5930 irq_flags |= PCI_IRQ_AFFINITY | PCI_IRQ_ALL_TYPES;
5931 else
5932 descp = NULL;
5933
5934 /* Do not allocate msix vectors for poll_queues.
5935 * msix_vectors is always within a range of FW supported reply queue.
5936 */
5937 i = pci_alloc_irq_vectors_affinity(instance->pdev,
5938 instance->low_latency_index_start,
5939 instance->msix_vectors - instance->iopoll_q_count, irq_flags, descp);
5940
5941 return i;
5942 }
5943
5944 /**
5945 * megasas_alloc_irq_vectors - Allocate IRQ vectors/enable MSI-x vectors
5946 * @instance: Adapter soft state
5947 * return: void
5948 */
5949 static void
megasas_alloc_irq_vectors(struct megasas_instance * instance)5950 megasas_alloc_irq_vectors(struct megasas_instance *instance)
5951 {
5952 int i;
5953 unsigned int num_msix_req;
5954
5955 instance->iopoll_q_count = 0;
5956 if ((instance->adapter_type != MFI_SERIES) &&
5957 poll_queues) {
5958
5959 instance->perf_mode = MR_LATENCY_PERF_MODE;
5960 instance->low_latency_index_start = 1;
5961
5962 /* reserve for default and non-mananged pre-vector. */
5963 if (instance->msix_vectors > (poll_queues + 2))
5964 instance->iopoll_q_count = poll_queues;
5965 else
5966 instance->iopoll_q_count = 0;
5967
5968 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
5969 instance->msix_vectors = min(num_msix_req,
5970 instance->msix_vectors);
5971
5972 }
5973
5974 i = __megasas_alloc_irq_vectors(instance);
5975
5976 if (((instance->perf_mode == MR_BALANCED_PERF_MODE)
5977 || instance->iopoll_q_count) &&
5978 (i != (instance->msix_vectors - instance->iopoll_q_count))) {
5979 if (instance->msix_vectors)
5980 pci_free_irq_vectors(instance->pdev);
5981 /* Disable Balanced IOPS mode and try realloc vectors */
5982 instance->perf_mode = MR_LATENCY_PERF_MODE;
5983 instance->low_latency_index_start = 1;
5984 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
5985
5986 instance->msix_vectors = min(num_msix_req,
5987 instance->msix_vectors);
5988
5989 instance->iopoll_q_count = 0;
5990 i = __megasas_alloc_irq_vectors(instance);
5991
5992 }
5993
5994 dev_info(&instance->pdev->dev,
5995 "requested/available msix %d/%d poll_queue %d\n",
5996 instance->msix_vectors - instance->iopoll_q_count,
5997 i, instance->iopoll_q_count);
5998
5999 if (i > 0)
6000 instance->msix_vectors = i;
6001 else
6002 instance->msix_vectors = 0;
6003
6004 if (instance->smp_affinity_enable)
6005 megasas_set_high_iops_queue_affinity_and_hint(instance);
6006 }
6007
6008 /**
6009 * megasas_init_fw - Initializes the FW
6010 * @instance: Adapter soft state
6011 *
6012 * This is the main function for initializing firmware
6013 */
6014
megasas_init_fw(struct megasas_instance * instance)6015 static int megasas_init_fw(struct megasas_instance *instance)
6016 {
6017 u32 max_sectors_1;
6018 u32 max_sectors_2, tmp_sectors, msix_enable;
6019 u32 scratch_pad_1, scratch_pad_2, scratch_pad_3, status_reg;
6020 resource_size_t base_addr;
6021 void *base_addr_phys;
6022 struct megasas_ctrl_info *ctrl_info = NULL;
6023 unsigned long bar_list;
6024 int i, j, loop;
6025 struct IOV_111 *iovPtr;
6026 struct fusion_context *fusion;
6027 bool intr_coalescing;
6028 unsigned int num_msix_req;
6029 u16 lnksta, speed;
6030
6031 fusion = instance->ctrl_context;
6032
6033 /* Find first memory bar */
6034 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
6035 instance->bar = find_first_bit(&bar_list, BITS_PER_LONG);
6036 if (pci_request_selected_regions(instance->pdev, 1<<instance->bar,
6037 "megasas: LSI")) {
6038 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n");
6039 return -EBUSY;
6040 }
6041
6042 base_addr = pci_resource_start(instance->pdev, instance->bar);
6043 instance->reg_set = ioremap(base_addr, 8192);
6044
6045 if (!instance->reg_set) {
6046 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n");
6047 goto fail_ioremap;
6048 }
6049
6050 base_addr_phys = &base_addr;
6051 dev_printk(KERN_DEBUG, &instance->pdev->dev,
6052 "BAR:0x%lx BAR's base_addr(phys):%pa mapped virt_addr:0x%p\n",
6053 instance->bar, base_addr_phys, instance->reg_set);
6054
6055 if (instance->adapter_type != MFI_SERIES)
6056 instance->instancet = &megasas_instance_template_fusion;
6057 else {
6058 switch (instance->pdev->device) {
6059 case PCI_DEVICE_ID_LSI_SAS1078R:
6060 case PCI_DEVICE_ID_LSI_SAS1078DE:
6061 instance->instancet = &megasas_instance_template_ppc;
6062 break;
6063 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
6064 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
6065 instance->instancet = &megasas_instance_template_gen2;
6066 break;
6067 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
6068 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
6069 instance->instancet = &megasas_instance_template_skinny;
6070 break;
6071 case PCI_DEVICE_ID_LSI_SAS1064R:
6072 case PCI_DEVICE_ID_DELL_PERC5:
6073 default:
6074 instance->instancet = &megasas_instance_template_xscale;
6075 instance->pd_list_not_supported = 1;
6076 break;
6077 }
6078 }
6079
6080 if (megasas_transition_to_ready(instance, 0)) {
6081 dev_info(&instance->pdev->dev,
6082 "Failed to transition controller to ready from %s!\n",
6083 __func__);
6084 if (instance->adapter_type != MFI_SERIES) {
6085 status_reg = instance->instancet->read_fw_status_reg(
6086 instance);
6087 if (status_reg & MFI_RESET_ADAPTER) {
6088 if (megasas_adp_reset_wait_for_ready
6089 (instance, true, 0) == FAILED)
6090 goto fail_ready_state;
6091 } else {
6092 goto fail_ready_state;
6093 }
6094 } else {
6095 atomic_set(&instance->fw_reset_no_pci_access, 1);
6096 instance->instancet->adp_reset
6097 (instance, instance->reg_set);
6098 atomic_set(&instance->fw_reset_no_pci_access, 0);
6099
6100 /*waiting for about 30 second before retry*/
6101 ssleep(30);
6102
6103 if (megasas_transition_to_ready(instance, 0))
6104 goto fail_ready_state;
6105 }
6106
6107 dev_info(&instance->pdev->dev,
6108 "FW restarted successfully from %s!\n",
6109 __func__);
6110 }
6111
6112 megasas_init_ctrl_params(instance);
6113
6114 if (megasas_set_dma_mask(instance))
6115 goto fail_ready_state;
6116
6117 if (megasas_alloc_ctrl_mem(instance))
6118 goto fail_alloc_dma_buf;
6119
6120 if (megasas_alloc_ctrl_dma_buffers(instance))
6121 goto fail_alloc_dma_buf;
6122
6123 fusion = instance->ctrl_context;
6124
6125 if (instance->adapter_type >= VENTURA_SERIES) {
6126 scratch_pad_2 =
6127 megasas_readl(instance,
6128 &instance->reg_set->outbound_scratch_pad_2);
6129 instance->max_raid_mapsize = ((scratch_pad_2 >>
6130 MR_MAX_RAID_MAP_SIZE_OFFSET_SHIFT) &
6131 MR_MAX_RAID_MAP_SIZE_MASK);
6132 }
6133
6134 instance->enable_sdev_max_qd = enable_sdev_max_qd;
6135
6136 switch (instance->adapter_type) {
6137 case VENTURA_SERIES:
6138 fusion->pcie_bw_limitation = true;
6139 break;
6140 case AERO_SERIES:
6141 fusion->r56_div_offload = true;
6142 break;
6143 default:
6144 break;
6145 }
6146
6147 /* Check if MSI-X is supported while in ready state */
6148 msix_enable = (instance->instancet->read_fw_status_reg(instance) &
6149 0x4000000) >> 0x1a;
6150 if (msix_enable && !msix_disable) {
6151
6152 scratch_pad_1 = megasas_readl
6153 (instance, &instance->reg_set->outbound_scratch_pad_1);
6154 /* Check max MSI-X vectors */
6155 if (fusion) {
6156 if (instance->adapter_type == THUNDERBOLT_SERIES) {
6157 /* Thunderbolt Series*/
6158 instance->msix_vectors = (scratch_pad_1
6159 & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
6160 } else {
6161 instance->msix_vectors = ((scratch_pad_1
6162 & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
6163 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
6164
6165 /*
6166 * For Invader series, > 8 MSI-x vectors
6167 * supported by FW/HW implies combined
6168 * reply queue mode is enabled.
6169 * For Ventura series, > 16 MSI-x vectors
6170 * supported by FW/HW implies combined
6171 * reply queue mode is enabled.
6172 */
6173 switch (instance->adapter_type) {
6174 case INVADER_SERIES:
6175 if (instance->msix_vectors > 8)
6176 instance->msix_combined = true;
6177 break;
6178 case AERO_SERIES:
6179 case VENTURA_SERIES:
6180 if (instance->msix_vectors > 16)
6181 instance->msix_combined = true;
6182 break;
6183 }
6184
6185 if (rdpq_enable)
6186 instance->is_rdpq = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ?
6187 1 : 0;
6188
6189 if (instance->adapter_type >= INVADER_SERIES &&
6190 !instance->msix_combined) {
6191 instance->msix_load_balance = true;
6192 instance->smp_affinity_enable = false;
6193 }
6194
6195 /* Save 1-15 reply post index address to local memory
6196 * Index 0 is already saved from reg offset
6197 * MPI2_REPLY_POST_HOST_INDEX_OFFSET
6198 */
6199 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
6200 instance->reply_post_host_index_addr[loop] =
6201 (u32 __iomem *)
6202 ((u8 __iomem *)instance->reg_set +
6203 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
6204 + (loop * 0x10));
6205 }
6206 }
6207
6208 dev_info(&instance->pdev->dev,
6209 "firmware supports msix\t: (%d)",
6210 instance->msix_vectors);
6211 if (msix_vectors)
6212 instance->msix_vectors = min(msix_vectors,
6213 instance->msix_vectors);
6214 } else /* MFI adapters */
6215 instance->msix_vectors = 1;
6216
6217
6218 /*
6219 * For Aero (if some conditions are met), driver will configure a
6220 * few additional reply queues with interrupt coalescing enabled.
6221 * These queues with interrupt coalescing enabled are called
6222 * High IOPS queues and rest of reply queues (based on number of
6223 * logical CPUs) are termed as Low latency queues.
6224 *
6225 * Total Number of reply queues = High IOPS queues + low latency queues
6226 *
6227 * For rest of fusion adapters, 1 additional reply queue will be
6228 * reserved for management commands, rest of reply queues
6229 * (based on number of logical CPUs) will be used for IOs and
6230 * referenced as IO queues.
6231 * Total Number of reply queues = 1 + IO queues
6232 *
6233 * MFI adapters supports single MSI-x so single reply queue
6234 * will be used for IO and management commands.
6235 */
6236
6237 intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ?
6238 true : false;
6239 if (intr_coalescing &&
6240 (num_online_cpus() >= MR_HIGH_IOPS_QUEUE_COUNT) &&
6241 (instance->msix_vectors == MEGASAS_MAX_MSIX_QUEUES))
6242 instance->perf_mode = MR_BALANCED_PERF_MODE;
6243 else
6244 instance->perf_mode = MR_LATENCY_PERF_MODE;
6245
6246
6247 if (instance->adapter_type == AERO_SERIES) {
6248 pcie_capability_read_word(instance->pdev, PCI_EXP_LNKSTA, &lnksta);
6249 speed = lnksta & PCI_EXP_LNKSTA_CLS;
6250
6251 /*
6252 * For Aero, if PCIe link speed is <16 GT/s, then driver should operate
6253 * in latency perf mode and enable R1 PCI bandwidth algorithm
6254 */
6255 if (speed < 0x4) {
6256 instance->perf_mode = MR_LATENCY_PERF_MODE;
6257 fusion->pcie_bw_limitation = true;
6258 }
6259
6260 /*
6261 * Performance mode settings provided through module parameter-perf_mode will
6262 * take affect only for:
6263 * 1. Aero family of adapters.
6264 * 2. When user sets module parameter- perf_mode in range of 0-2.
6265 */
6266 if ((perf_mode >= MR_BALANCED_PERF_MODE) &&
6267 (perf_mode <= MR_LATENCY_PERF_MODE))
6268 instance->perf_mode = perf_mode;
6269 /*
6270 * If intr coalescing is not supported by controller FW, then IOPS
6271 * and Balanced modes are not feasible.
6272 */
6273 if (!intr_coalescing)
6274 instance->perf_mode = MR_LATENCY_PERF_MODE;
6275
6276 }
6277
6278 if (instance->perf_mode == MR_BALANCED_PERF_MODE)
6279 instance->low_latency_index_start =
6280 MR_HIGH_IOPS_QUEUE_COUNT;
6281 else
6282 instance->low_latency_index_start = 1;
6283
6284 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
6285
6286 instance->msix_vectors = min(num_msix_req,
6287 instance->msix_vectors);
6288
6289 megasas_alloc_irq_vectors(instance);
6290 if (!instance->msix_vectors)
6291 instance->msix_load_balance = false;
6292 }
6293 /*
6294 * MSI-X host index 0 is common for all adapter.
6295 * It is used for all MPT based Adapters.
6296 */
6297 if (instance->msix_combined) {
6298 instance->reply_post_host_index_addr[0] =
6299 (u32 *)((u8 *)instance->reg_set +
6300 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET);
6301 } else {
6302 instance->reply_post_host_index_addr[0] =
6303 (u32 *)((u8 *)instance->reg_set +
6304 MPI2_REPLY_POST_HOST_INDEX_OFFSET);
6305 }
6306
6307 if (!instance->msix_vectors) {
6308 i = pci_alloc_irq_vectors(instance->pdev, 1, 1, PCI_IRQ_LEGACY);
6309 if (i < 0)
6310 goto fail_init_adapter;
6311 }
6312
6313 megasas_setup_reply_map(instance);
6314
6315 dev_info(&instance->pdev->dev,
6316 "current msix/online cpus\t: (%d/%d)\n",
6317 instance->msix_vectors, (unsigned int)num_online_cpus());
6318 dev_info(&instance->pdev->dev,
6319 "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled");
6320
6321 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
6322 (unsigned long)instance);
6323
6324 /*
6325 * Below are default value for legacy Firmware.
6326 * non-fusion based controllers
6327 */
6328 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
6329 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
6330 /* Get operational params, sge flags, send init cmd to controller */
6331 if (instance->instancet->init_adapter(instance))
6332 goto fail_init_adapter;
6333
6334 if (instance->adapter_type >= VENTURA_SERIES) {
6335 scratch_pad_3 =
6336 megasas_readl(instance,
6337 &instance->reg_set->outbound_scratch_pad_3);
6338 if ((scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK) >=
6339 MR_DEFAULT_NVME_PAGE_SHIFT)
6340 instance->nvme_page_size =
6341 (1 << (scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK));
6342
6343 dev_info(&instance->pdev->dev,
6344 "NVME page size\t: (%d)\n", instance->nvme_page_size);
6345 }
6346
6347 if (instance->msix_vectors ?
6348 megasas_setup_irqs_msix(instance, 1) :
6349 megasas_setup_irqs_ioapic(instance))
6350 goto fail_init_adapter;
6351
6352 if (instance->adapter_type != MFI_SERIES)
6353 megasas_setup_irq_poll(instance);
6354
6355 instance->instancet->enable_intr(instance);
6356
6357 dev_info(&instance->pdev->dev, "INIT adapter done\n");
6358
6359 megasas_setup_jbod_map(instance);
6360
6361 if (megasas_get_device_list(instance) != SUCCESS) {
6362 dev_err(&instance->pdev->dev,
6363 "%s: megasas_get_device_list failed\n",
6364 __func__);
6365 goto fail_get_ld_pd_list;
6366 }
6367
6368 /* stream detection initialization */
6369 if (instance->adapter_type >= VENTURA_SERIES) {
6370 fusion->stream_detect_by_ld =
6371 kcalloc(MAX_LOGICAL_DRIVES_EXT,
6372 sizeof(struct LD_STREAM_DETECT *),
6373 GFP_KERNEL);
6374 if (!fusion->stream_detect_by_ld) {
6375 dev_err(&instance->pdev->dev,
6376 "unable to allocate stream detection for pool of LDs\n");
6377 goto fail_get_ld_pd_list;
6378 }
6379 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) {
6380 fusion->stream_detect_by_ld[i] =
6381 kzalloc(sizeof(struct LD_STREAM_DETECT),
6382 GFP_KERNEL);
6383 if (!fusion->stream_detect_by_ld[i]) {
6384 dev_err(&instance->pdev->dev,
6385 "unable to allocate stream detect by LD\n ");
6386 for (j = 0; j < i; ++j)
6387 kfree(fusion->stream_detect_by_ld[j]);
6388 kfree(fusion->stream_detect_by_ld);
6389 fusion->stream_detect_by_ld = NULL;
6390 goto fail_get_ld_pd_list;
6391 }
6392 fusion->stream_detect_by_ld[i]->mru_bit_map
6393 = MR_STREAM_BITMAP;
6394 }
6395 }
6396
6397 /*
6398 * Compute the max allowed sectors per IO: The controller info has two
6399 * limits on max sectors. Driver should use the minimum of these two.
6400 *
6401 * 1 << stripe_sz_ops.min = max sectors per strip
6402 *
6403 * Note that older firmwares ( < FW ver 30) didn't report information
6404 * to calculate max_sectors_1. So the number ended up as zero always.
6405 */
6406 tmp_sectors = 0;
6407 ctrl_info = instance->ctrl_info_buf;
6408
6409 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
6410 le16_to_cpu(ctrl_info->max_strips_per_io);
6411 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
6412
6413 tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2);
6414
6415 instance->peerIsPresent = ctrl_info->cluster.peerIsPresent;
6416 instance->passive = ctrl_info->cluster.passive;
6417 memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId));
6418 instance->UnevenSpanSupport =
6419 ctrl_info->adapterOperations2.supportUnevenSpans;
6420 if (instance->UnevenSpanSupport) {
6421 struct fusion_context *fusion = instance->ctrl_context;
6422 if (MR_ValidateMapInfo(instance, instance->map_id))
6423 fusion->fast_path_io = 1;
6424 else
6425 fusion->fast_path_io = 0;
6426
6427 }
6428 if (ctrl_info->host_interface.SRIOV) {
6429 instance->requestorId = ctrl_info->iov.requestorId;
6430 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) {
6431 if (!ctrl_info->adapterOperations2.activePassive)
6432 instance->PlasmaFW111 = 1;
6433
6434 dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n",
6435 instance->PlasmaFW111 ? "1.11" : "new");
6436
6437 if (instance->PlasmaFW111) {
6438 iovPtr = (struct IOV_111 *)
6439 ((unsigned char *)ctrl_info + IOV_111_OFFSET);
6440 instance->requestorId = iovPtr->requestorId;
6441 }
6442 }
6443 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n",
6444 instance->requestorId);
6445 }
6446
6447 instance->crash_dump_fw_support =
6448 ctrl_info->adapterOperations3.supportCrashDump;
6449 instance->crash_dump_drv_support =
6450 (instance->crash_dump_fw_support &&
6451 instance->crash_dump_buf);
6452 if (instance->crash_dump_drv_support)
6453 megasas_set_crash_dump_params(instance,
6454 MR_CRASH_BUF_TURN_OFF);
6455
6456 else {
6457 if (instance->crash_dump_buf)
6458 dma_free_coherent(&instance->pdev->dev,
6459 CRASH_DMA_BUF_SIZE,
6460 instance->crash_dump_buf,
6461 instance->crash_dump_h);
6462 instance->crash_dump_buf = NULL;
6463 }
6464
6465 if (instance->snapdump_wait_time) {
6466 megasas_get_snapdump_properties(instance);
6467 dev_info(&instance->pdev->dev, "Snap dump wait time\t: %d\n",
6468 instance->snapdump_wait_time);
6469 }
6470
6471 dev_info(&instance->pdev->dev,
6472 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n",
6473 le16_to_cpu(ctrl_info->pci.vendor_id),
6474 le16_to_cpu(ctrl_info->pci.device_id),
6475 le16_to_cpu(ctrl_info->pci.sub_vendor_id),
6476 le16_to_cpu(ctrl_info->pci.sub_device_id));
6477 dev_info(&instance->pdev->dev, "unevenspan support : %s\n",
6478 instance->UnevenSpanSupport ? "yes" : "no");
6479 dev_info(&instance->pdev->dev, "firmware crash dump : %s\n",
6480 instance->crash_dump_drv_support ? "yes" : "no");
6481 dev_info(&instance->pdev->dev, "JBOD sequence map : %s\n",
6482 instance->use_seqnum_jbod_fp ? "enabled" : "disabled");
6483
6484 instance->max_sectors_per_req = instance->max_num_sge *
6485 SGE_BUFFER_SIZE / 512;
6486 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
6487 instance->max_sectors_per_req = tmp_sectors;
6488
6489 /* Check for valid throttlequeuedepth module parameter */
6490 if (throttlequeuedepth &&
6491 throttlequeuedepth <= instance->max_scsi_cmds)
6492 instance->throttlequeuedepth = throttlequeuedepth;
6493 else
6494 instance->throttlequeuedepth =
6495 MEGASAS_THROTTLE_QUEUE_DEPTH;
6496
6497 if ((resetwaittime < 1) ||
6498 (resetwaittime > MEGASAS_RESET_WAIT_TIME))
6499 resetwaittime = MEGASAS_RESET_WAIT_TIME;
6500
6501 if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT))
6502 scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
6503
6504 /* Launch SR-IOV heartbeat timer */
6505 if (instance->requestorId) {
6506 if (!megasas_sriov_start_heartbeat(instance, 1)) {
6507 megasas_start_timer(instance);
6508 } else {
6509 instance->skip_heartbeat_timer_del = 1;
6510 goto fail_get_ld_pd_list;
6511 }
6512 }
6513
6514 /*
6515 * Create and start watchdog thread which will monitor
6516 * controller state every 1 sec and trigger OCR when
6517 * it enters fault state
6518 */
6519 if (instance->adapter_type != MFI_SERIES)
6520 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
6521 goto fail_start_watchdog;
6522
6523 return 0;
6524
6525 fail_start_watchdog:
6526 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
6527 del_timer_sync(&instance->sriov_heartbeat_timer);
6528 fail_get_ld_pd_list:
6529 instance->instancet->disable_intr(instance);
6530 megasas_destroy_irqs(instance);
6531 fail_init_adapter:
6532 if (instance->msix_vectors)
6533 pci_free_irq_vectors(instance->pdev);
6534 instance->msix_vectors = 0;
6535 fail_alloc_dma_buf:
6536 megasas_free_ctrl_dma_buffers(instance);
6537 megasas_free_ctrl_mem(instance);
6538 fail_ready_state:
6539 iounmap(instance->reg_set);
6540
6541 fail_ioremap:
6542 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6543
6544 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6545 __func__, __LINE__);
6546 return -EINVAL;
6547 }
6548
6549 /**
6550 * megasas_release_mfi - Reverses the FW initialization
6551 * @instance: Adapter soft state
6552 */
megasas_release_mfi(struct megasas_instance * instance)6553 static void megasas_release_mfi(struct megasas_instance *instance)
6554 {
6555 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
6556
6557 if (instance->reply_queue)
6558 dma_free_coherent(&instance->pdev->dev, reply_q_sz,
6559 instance->reply_queue, instance->reply_queue_h);
6560
6561 megasas_free_cmds(instance);
6562
6563 iounmap(instance->reg_set);
6564
6565 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6566 }
6567
6568 /**
6569 * megasas_get_seq_num - Gets latest event sequence numbers
6570 * @instance: Adapter soft state
6571 * @eli: FW event log sequence numbers information
6572 *
6573 * FW maintains a log of all events in a non-volatile area. Upper layers would
6574 * usually find out the latest sequence number of the events, the seq number at
6575 * the boot etc. They would "read" all the events below the latest seq number
6576 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
6577 * number), they would subsribe to AEN (asynchronous event notification) and
6578 * wait for the events to happen.
6579 */
6580 static int
megasas_get_seq_num(struct megasas_instance * instance,struct megasas_evt_log_info * eli)6581 megasas_get_seq_num(struct megasas_instance *instance,
6582 struct megasas_evt_log_info *eli)
6583 {
6584 struct megasas_cmd *cmd;
6585 struct megasas_dcmd_frame *dcmd;
6586 struct megasas_evt_log_info *el_info;
6587 dma_addr_t el_info_h = 0;
6588 int ret;
6589
6590 cmd = megasas_get_cmd(instance);
6591
6592 if (!cmd) {
6593 return -ENOMEM;
6594 }
6595
6596 dcmd = &cmd->frame->dcmd;
6597 el_info = dma_alloc_coherent(&instance->pdev->dev,
6598 sizeof(struct megasas_evt_log_info),
6599 &el_info_h, GFP_KERNEL);
6600 if (!el_info) {
6601 megasas_return_cmd(instance, cmd);
6602 return -ENOMEM;
6603 }
6604
6605 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6606
6607 dcmd->cmd = MFI_CMD_DCMD;
6608 dcmd->cmd_status = 0x0;
6609 dcmd->sge_count = 1;
6610 dcmd->flags = MFI_FRAME_DIR_READ;
6611 dcmd->timeout = 0;
6612 dcmd->pad_0 = 0;
6613 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
6614 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
6615
6616 megasas_set_dma_settings(instance, dcmd, el_info_h,
6617 sizeof(struct megasas_evt_log_info));
6618
6619 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
6620 if (ret != DCMD_SUCCESS) {
6621 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6622 __func__, __LINE__);
6623 goto dcmd_failed;
6624 }
6625
6626 /*
6627 * Copy the data back into callers buffer
6628 */
6629 eli->newest_seq_num = el_info->newest_seq_num;
6630 eli->oldest_seq_num = el_info->oldest_seq_num;
6631 eli->clear_seq_num = el_info->clear_seq_num;
6632 eli->shutdown_seq_num = el_info->shutdown_seq_num;
6633 eli->boot_seq_num = el_info->boot_seq_num;
6634
6635 dcmd_failed:
6636 dma_free_coherent(&instance->pdev->dev,
6637 sizeof(struct megasas_evt_log_info),
6638 el_info, el_info_h);
6639
6640 megasas_return_cmd(instance, cmd);
6641
6642 return ret;
6643 }
6644
6645 /**
6646 * megasas_register_aen - Registers for asynchronous event notification
6647 * @instance: Adapter soft state
6648 * @seq_num: The starting sequence number
6649 * @class_locale_word: Class of the event
6650 *
6651 * This function subscribes for AEN for events beyond the @seq_num. It requests
6652 * to be notified if and only if the event is of type @class_locale
6653 */
6654 static int
megasas_register_aen(struct megasas_instance * instance,u32 seq_num,u32 class_locale_word)6655 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
6656 u32 class_locale_word)
6657 {
6658 int ret_val;
6659 struct megasas_cmd *cmd;
6660 struct megasas_dcmd_frame *dcmd;
6661 union megasas_evt_class_locale curr_aen;
6662 union megasas_evt_class_locale prev_aen;
6663
6664 /*
6665 * If there an AEN pending already (aen_cmd), check if the
6666 * class_locale of that pending AEN is inclusive of the new
6667 * AEN request we currently have. If it is, then we don't have
6668 * to do anything. In other words, whichever events the current
6669 * AEN request is subscribing to, have already been subscribed
6670 * to.
6671 *
6672 * If the old_cmd is _not_ inclusive, then we have to abort
6673 * that command, form a class_locale that is superset of both
6674 * old and current and re-issue to the FW
6675 */
6676
6677 curr_aen.word = class_locale_word;
6678
6679 if (instance->aen_cmd) {
6680
6681 prev_aen.word =
6682 le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]);
6683
6684 if ((curr_aen.members.class < MFI_EVT_CLASS_DEBUG) ||
6685 (curr_aen.members.class > MFI_EVT_CLASS_DEAD)) {
6686 dev_info(&instance->pdev->dev,
6687 "%s %d out of range class %d send by application\n",
6688 __func__, __LINE__, curr_aen.members.class);
6689 return 0;
6690 }
6691
6692 /*
6693 * A class whose enum value is smaller is inclusive of all
6694 * higher values. If a PROGRESS (= -1) was previously
6695 * registered, then a new registration requests for higher
6696 * classes need not be sent to FW. They are automatically
6697 * included.
6698 *
6699 * Locale numbers don't have such hierarchy. They are bitmap
6700 * values
6701 */
6702 if ((prev_aen.members.class <= curr_aen.members.class) &&
6703 !((prev_aen.members.locale & curr_aen.members.locale) ^
6704 curr_aen.members.locale)) {
6705 /*
6706 * Previously issued event registration includes
6707 * current request. Nothing to do.
6708 */
6709 return 0;
6710 } else {
6711 curr_aen.members.locale |= prev_aen.members.locale;
6712
6713 if (prev_aen.members.class < curr_aen.members.class)
6714 curr_aen.members.class = prev_aen.members.class;
6715
6716 instance->aen_cmd->abort_aen = 1;
6717 ret_val = megasas_issue_blocked_abort_cmd(instance,
6718 instance->
6719 aen_cmd, 30);
6720
6721 if (ret_val) {
6722 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort "
6723 "previous AEN command\n");
6724 return ret_val;
6725 }
6726 }
6727 }
6728
6729 cmd = megasas_get_cmd(instance);
6730
6731 if (!cmd)
6732 return -ENOMEM;
6733
6734 dcmd = &cmd->frame->dcmd;
6735
6736 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
6737
6738 /*
6739 * Prepare DCMD for aen registration
6740 */
6741 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6742
6743 dcmd->cmd = MFI_CMD_DCMD;
6744 dcmd->cmd_status = 0x0;
6745 dcmd->sge_count = 1;
6746 dcmd->flags = MFI_FRAME_DIR_READ;
6747 dcmd->timeout = 0;
6748 dcmd->pad_0 = 0;
6749 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
6750 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
6751 dcmd->mbox.w[0] = cpu_to_le32(seq_num);
6752 instance->last_seq_num = seq_num;
6753 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
6754
6755 megasas_set_dma_settings(instance, dcmd, instance->evt_detail_h,
6756 sizeof(struct megasas_evt_detail));
6757
6758 if (instance->aen_cmd != NULL) {
6759 megasas_return_cmd(instance, cmd);
6760 return 0;
6761 }
6762
6763 /*
6764 * Store reference to the cmd used to register for AEN. When an
6765 * application wants us to register for AEN, we have to abort this
6766 * cmd and re-register with a new EVENT LOCALE supplied by that app
6767 */
6768 instance->aen_cmd = cmd;
6769
6770 /*
6771 * Issue the aen registration frame
6772 */
6773 instance->instancet->issue_dcmd(instance, cmd);
6774
6775 return 0;
6776 }
6777
6778 /* megasas_get_target_prop - Send DCMD with below details to firmware.
6779 *
6780 * This DCMD will fetch few properties of LD/system PD defined
6781 * in MR_TARGET_DEV_PROPERTIES. eg. Queue Depth, MDTS value.
6782 *
6783 * DCMD send by drivers whenever new target is added to the OS.
6784 *
6785 * dcmd.opcode - MR_DCMD_DEV_GET_TARGET_PROP
6786 * dcmd.mbox.b[0] - DCMD is to be fired for LD or system PD.
6787 * 0 = system PD, 1 = LD.
6788 * dcmd.mbox.s[1] - TargetID for LD/system PD.
6789 * dcmd.sge IN - Pointer to return MR_TARGET_DEV_PROPERTIES.
6790 *
6791 * @instance: Adapter soft state
6792 * @sdev: OS provided scsi device
6793 *
6794 * Returns 0 on success non-zero on failure.
6795 */
6796 int
megasas_get_target_prop(struct megasas_instance * instance,struct scsi_device * sdev)6797 megasas_get_target_prop(struct megasas_instance *instance,
6798 struct scsi_device *sdev)
6799 {
6800 int ret;
6801 struct megasas_cmd *cmd;
6802 struct megasas_dcmd_frame *dcmd;
6803 u16 targetId = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) +
6804 sdev->id;
6805
6806 cmd = megasas_get_cmd(instance);
6807
6808 if (!cmd) {
6809 dev_err(&instance->pdev->dev,
6810 "Failed to get cmd %s\n", __func__);
6811 return -ENOMEM;
6812 }
6813
6814 dcmd = &cmd->frame->dcmd;
6815
6816 memset(instance->tgt_prop, 0, sizeof(*instance->tgt_prop));
6817 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6818 dcmd->mbox.b[0] = MEGASAS_IS_LOGICAL(sdev);
6819
6820 dcmd->mbox.s[1] = cpu_to_le16(targetId);
6821 dcmd->cmd = MFI_CMD_DCMD;
6822 dcmd->cmd_status = 0xFF;
6823 dcmd->sge_count = 1;
6824 dcmd->flags = MFI_FRAME_DIR_READ;
6825 dcmd->timeout = 0;
6826 dcmd->pad_0 = 0;
6827 dcmd->data_xfer_len =
6828 cpu_to_le32(sizeof(struct MR_TARGET_PROPERTIES));
6829 dcmd->opcode = cpu_to_le32(MR_DCMD_DRV_GET_TARGET_PROP);
6830
6831 megasas_set_dma_settings(instance, dcmd, instance->tgt_prop_h,
6832 sizeof(struct MR_TARGET_PROPERTIES));
6833
6834 if ((instance->adapter_type != MFI_SERIES) &&
6835 !instance->mask_interrupts)
6836 ret = megasas_issue_blocked_cmd(instance,
6837 cmd, MFI_IO_TIMEOUT_SECS);
6838 else
6839 ret = megasas_issue_polled(instance, cmd);
6840
6841 switch (ret) {
6842 case DCMD_TIMEOUT:
6843 switch (dcmd_timeout_ocr_possible(instance)) {
6844 case INITIATE_OCR:
6845 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
6846 mutex_unlock(&instance->reset_mutex);
6847 megasas_reset_fusion(instance->host,
6848 MFI_IO_TIMEOUT_OCR);
6849 mutex_lock(&instance->reset_mutex);
6850 break;
6851 case KILL_ADAPTER:
6852 megaraid_sas_kill_hba(instance);
6853 break;
6854 case IGNORE_TIMEOUT:
6855 dev_info(&instance->pdev->dev,
6856 "Ignore DCMD timeout: %s %d\n",
6857 __func__, __LINE__);
6858 break;
6859 }
6860 break;
6861
6862 default:
6863 megasas_return_cmd(instance, cmd);
6864 }
6865 if (ret != DCMD_SUCCESS)
6866 dev_err(&instance->pdev->dev,
6867 "return from %s %d return value %d\n",
6868 __func__, __LINE__, ret);
6869
6870 return ret;
6871 }
6872
6873 /**
6874 * megasas_start_aen - Subscribes to AEN during driver load time
6875 * @instance: Adapter soft state
6876 */
megasas_start_aen(struct megasas_instance * instance)6877 static int megasas_start_aen(struct megasas_instance *instance)
6878 {
6879 struct megasas_evt_log_info eli;
6880 union megasas_evt_class_locale class_locale;
6881
6882 /*
6883 * Get the latest sequence number from FW
6884 */
6885 memset(&eli, 0, sizeof(eli));
6886
6887 if (megasas_get_seq_num(instance, &eli))
6888 return -1;
6889
6890 /*
6891 * Register AEN with FW for latest sequence number plus 1
6892 */
6893 class_locale.members.reserved = 0;
6894 class_locale.members.locale = MR_EVT_LOCALE_ALL;
6895 class_locale.members.class = MR_EVT_CLASS_DEBUG;
6896
6897 return megasas_register_aen(instance,
6898 le32_to_cpu(eli.newest_seq_num) + 1,
6899 class_locale.word);
6900 }
6901
6902 /**
6903 * megasas_io_attach - Attaches this driver to SCSI mid-layer
6904 * @instance: Adapter soft state
6905 */
megasas_io_attach(struct megasas_instance * instance)6906 static int megasas_io_attach(struct megasas_instance *instance)
6907 {
6908 struct Scsi_Host *host = instance->host;
6909
6910 /*
6911 * Export parameters required by SCSI mid-layer
6912 */
6913 host->unique_id = instance->unique_id;
6914 host->can_queue = instance->max_scsi_cmds;
6915 host->this_id = instance->init_id;
6916 host->sg_tablesize = instance->max_num_sge;
6917
6918 if (instance->fw_support_ieee)
6919 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
6920
6921 /*
6922 * Check if the module parameter value for max_sectors can be used
6923 */
6924 if (max_sectors && max_sectors < instance->max_sectors_per_req)
6925 instance->max_sectors_per_req = max_sectors;
6926 else {
6927 if (max_sectors) {
6928 if (((instance->pdev->device ==
6929 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
6930 (instance->pdev->device ==
6931 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
6932 (max_sectors <= MEGASAS_MAX_SECTORS)) {
6933 instance->max_sectors_per_req = max_sectors;
6934 } else {
6935 dev_info(&instance->pdev->dev, "max_sectors should be > 0"
6936 "and <= %d (or < 1MB for GEN2 controller)\n",
6937 instance->max_sectors_per_req);
6938 }
6939 }
6940 }
6941
6942 host->max_sectors = instance->max_sectors_per_req;
6943 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
6944 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
6945 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
6946 host->max_lun = MEGASAS_MAX_LUN;
6947 host->max_cmd_len = 16;
6948
6949 /* Use shared host tagset only for fusion adaptors
6950 * if there are managed interrupts (smp affinity enabled case).
6951 * Single msix_vectors in kdump, so shared host tag is also disabled.
6952 */
6953
6954 host->host_tagset = 0;
6955 host->nr_hw_queues = 1;
6956
6957 if ((instance->adapter_type != MFI_SERIES) &&
6958 (instance->msix_vectors > instance->low_latency_index_start) &&
6959 host_tagset_enable &&
6960 instance->smp_affinity_enable) {
6961 host->host_tagset = 1;
6962 host->nr_hw_queues = instance->msix_vectors -
6963 instance->low_latency_index_start + instance->iopoll_q_count;
6964 if (instance->iopoll_q_count)
6965 host->nr_maps = 3;
6966 } else {
6967 instance->iopoll_q_count = 0;
6968 }
6969
6970 dev_info(&instance->pdev->dev,
6971 "Max firmware commands: %d shared with default "
6972 "hw_queues = %d poll_queues %d\n", instance->max_fw_cmds,
6973 host->nr_hw_queues - instance->iopoll_q_count,
6974 instance->iopoll_q_count);
6975 /*
6976 * Notify the mid-layer about the new controller
6977 */
6978 if (scsi_add_host(host, &instance->pdev->dev)) {
6979 dev_err(&instance->pdev->dev,
6980 "Failed to add host from %s %d\n",
6981 __func__, __LINE__);
6982 return -ENODEV;
6983 }
6984
6985 return 0;
6986 }
6987
6988 /**
6989 * megasas_set_dma_mask - Set DMA mask for supported controllers
6990 *
6991 * @instance: Adapter soft state
6992 * Description:
6993 *
6994 * For Ventura, driver/FW will operate in 63bit DMA addresses.
6995 *
6996 * For invader-
6997 * By default, driver/FW will operate in 32bit DMA addresses
6998 * for consistent DMA mapping but if 32 bit consistent
6999 * DMA mask fails, driver will try with 63 bit consistent
7000 * mask provided FW is true 63bit DMA capable
7001 *
7002 * For older controllers(Thunderbolt and MFI based adapters)-
7003 * driver/FW will operate in 32 bit consistent DMA addresses.
7004 */
7005 static int
megasas_set_dma_mask(struct megasas_instance * instance)7006 megasas_set_dma_mask(struct megasas_instance *instance)
7007 {
7008 u64 consistent_mask;
7009 struct pci_dev *pdev;
7010 u32 scratch_pad_1;
7011
7012 pdev = instance->pdev;
7013 consistent_mask = (instance->adapter_type >= VENTURA_SERIES) ?
7014 DMA_BIT_MASK(63) : DMA_BIT_MASK(32);
7015
7016 if (IS_DMA64) {
7017 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(63)) &&
7018 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
7019 goto fail_set_dma_mask;
7020
7021 if ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) &&
7022 (dma_set_coherent_mask(&pdev->dev, consistent_mask) &&
7023 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))) {
7024 /*
7025 * If 32 bit DMA mask fails, then try for 64 bit mask
7026 * for FW capable of handling 64 bit DMA.
7027 */
7028 scratch_pad_1 = megasas_readl
7029 (instance, &instance->reg_set->outbound_scratch_pad_1);
7030
7031 if (!(scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET))
7032 goto fail_set_dma_mask;
7033 else if (dma_set_mask_and_coherent(&pdev->dev,
7034 DMA_BIT_MASK(63)))
7035 goto fail_set_dma_mask;
7036 }
7037 } else if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
7038 goto fail_set_dma_mask;
7039
7040 if (pdev->dev.coherent_dma_mask == DMA_BIT_MASK(32))
7041 instance->consistent_mask_64bit = false;
7042 else
7043 instance->consistent_mask_64bit = true;
7044
7045 dev_info(&pdev->dev, "%s bit DMA mask and %s bit consistent mask\n",
7046 ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) ? "63" : "32"),
7047 (instance->consistent_mask_64bit ? "63" : "32"));
7048
7049 return 0;
7050
7051 fail_set_dma_mask:
7052 dev_err(&pdev->dev, "Failed to set DMA mask\n");
7053 return -1;
7054
7055 }
7056
7057 /*
7058 * megasas_set_adapter_type - Set adapter type.
7059 * Supported controllers can be divided in
7060 * different categories-
7061 * enum MR_ADAPTER_TYPE {
7062 * MFI_SERIES = 1,
7063 * THUNDERBOLT_SERIES = 2,
7064 * INVADER_SERIES = 3,
7065 * VENTURA_SERIES = 4,
7066 * AERO_SERIES = 5,
7067 * };
7068 * @instance: Adapter soft state
7069 * return: void
7070 */
megasas_set_adapter_type(struct megasas_instance * instance)7071 static inline void megasas_set_adapter_type(struct megasas_instance *instance)
7072 {
7073 if ((instance->pdev->vendor == PCI_VENDOR_ID_DELL) &&
7074 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5)) {
7075 instance->adapter_type = MFI_SERIES;
7076 } else {
7077 switch (instance->pdev->device) {
7078 case PCI_DEVICE_ID_LSI_AERO_10E1:
7079 case PCI_DEVICE_ID_LSI_AERO_10E2:
7080 case PCI_DEVICE_ID_LSI_AERO_10E5:
7081 case PCI_DEVICE_ID_LSI_AERO_10E6:
7082 instance->adapter_type = AERO_SERIES;
7083 break;
7084 case PCI_DEVICE_ID_LSI_VENTURA:
7085 case PCI_DEVICE_ID_LSI_CRUSADER:
7086 case PCI_DEVICE_ID_LSI_HARPOON:
7087 case PCI_DEVICE_ID_LSI_TOMCAT:
7088 case PCI_DEVICE_ID_LSI_VENTURA_4PORT:
7089 case PCI_DEVICE_ID_LSI_CRUSADER_4PORT:
7090 instance->adapter_type = VENTURA_SERIES;
7091 break;
7092 case PCI_DEVICE_ID_LSI_FUSION:
7093 case PCI_DEVICE_ID_LSI_PLASMA:
7094 instance->adapter_type = THUNDERBOLT_SERIES;
7095 break;
7096 case PCI_DEVICE_ID_LSI_INVADER:
7097 case PCI_DEVICE_ID_LSI_INTRUDER:
7098 case PCI_DEVICE_ID_LSI_INTRUDER_24:
7099 case PCI_DEVICE_ID_LSI_CUTLASS_52:
7100 case PCI_DEVICE_ID_LSI_CUTLASS_53:
7101 case PCI_DEVICE_ID_LSI_FURY:
7102 instance->adapter_type = INVADER_SERIES;
7103 break;
7104 default: /* For all other supported controllers */
7105 instance->adapter_type = MFI_SERIES;
7106 break;
7107 }
7108 }
7109 }
7110
megasas_alloc_mfi_ctrl_mem(struct megasas_instance * instance)7111 static inline int megasas_alloc_mfi_ctrl_mem(struct megasas_instance *instance)
7112 {
7113 instance->producer = dma_alloc_coherent(&instance->pdev->dev,
7114 sizeof(u32), &instance->producer_h, GFP_KERNEL);
7115 instance->consumer = dma_alloc_coherent(&instance->pdev->dev,
7116 sizeof(u32), &instance->consumer_h, GFP_KERNEL);
7117
7118 if (!instance->producer || !instance->consumer) {
7119 dev_err(&instance->pdev->dev,
7120 "Failed to allocate memory for producer, consumer\n");
7121 return -1;
7122 }
7123
7124 *instance->producer = 0;
7125 *instance->consumer = 0;
7126 return 0;
7127 }
7128
7129 /**
7130 * megasas_alloc_ctrl_mem - Allocate per controller memory for core data
7131 * structures which are not common across MFI
7132 * adapters and fusion adapters.
7133 * For MFI based adapters, allocate producer and
7134 * consumer buffers. For fusion adapters, allocate
7135 * memory for fusion context.
7136 * @instance: Adapter soft state
7137 * return: 0 for SUCCESS
7138 */
megasas_alloc_ctrl_mem(struct megasas_instance * instance)7139 static int megasas_alloc_ctrl_mem(struct megasas_instance *instance)
7140 {
7141 instance->reply_map = kcalloc(nr_cpu_ids, sizeof(unsigned int),
7142 GFP_KERNEL);
7143 if (!instance->reply_map)
7144 return -ENOMEM;
7145
7146 switch (instance->adapter_type) {
7147 case MFI_SERIES:
7148 if (megasas_alloc_mfi_ctrl_mem(instance))
7149 return -ENOMEM;
7150 break;
7151 case AERO_SERIES:
7152 case VENTURA_SERIES:
7153 case THUNDERBOLT_SERIES:
7154 case INVADER_SERIES:
7155 if (megasas_alloc_fusion_context(instance))
7156 return -ENOMEM;
7157 break;
7158 }
7159
7160 return 0;
7161 }
7162
7163 /*
7164 * megasas_free_ctrl_mem - Free fusion context for fusion adapters and
7165 * producer, consumer buffers for MFI adapters
7166 *
7167 * @instance - Adapter soft instance
7168 *
7169 */
megasas_free_ctrl_mem(struct megasas_instance * instance)7170 static inline void megasas_free_ctrl_mem(struct megasas_instance *instance)
7171 {
7172 kfree(instance->reply_map);
7173 if (instance->adapter_type == MFI_SERIES) {
7174 if (instance->producer)
7175 dma_free_coherent(&instance->pdev->dev, sizeof(u32),
7176 instance->producer,
7177 instance->producer_h);
7178 if (instance->consumer)
7179 dma_free_coherent(&instance->pdev->dev, sizeof(u32),
7180 instance->consumer,
7181 instance->consumer_h);
7182 } else {
7183 megasas_free_fusion_context(instance);
7184 }
7185 }
7186
7187 /**
7188 * megasas_alloc_ctrl_dma_buffers - Allocate consistent DMA buffers during
7189 * driver load time
7190 *
7191 * @instance: Adapter soft instance
7192 *
7193 * @return: O for SUCCESS
7194 */
7195 static inline
megasas_alloc_ctrl_dma_buffers(struct megasas_instance * instance)7196 int megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance)
7197 {
7198 struct pci_dev *pdev = instance->pdev;
7199 struct fusion_context *fusion = instance->ctrl_context;
7200
7201 instance->evt_detail = dma_alloc_coherent(&pdev->dev,
7202 sizeof(struct megasas_evt_detail),
7203 &instance->evt_detail_h, GFP_KERNEL);
7204
7205 if (!instance->evt_detail) {
7206 dev_err(&instance->pdev->dev,
7207 "Failed to allocate event detail buffer\n");
7208 return -ENOMEM;
7209 }
7210
7211 if (fusion) {
7212 fusion->ioc_init_request =
7213 dma_alloc_coherent(&pdev->dev,
7214 sizeof(struct MPI2_IOC_INIT_REQUEST),
7215 &fusion->ioc_init_request_phys,
7216 GFP_KERNEL);
7217
7218 if (!fusion->ioc_init_request) {
7219 dev_err(&pdev->dev,
7220 "Failed to allocate ioc init request\n");
7221 return -ENOMEM;
7222 }
7223
7224 instance->snapdump_prop = dma_alloc_coherent(&pdev->dev,
7225 sizeof(struct MR_SNAPDUMP_PROPERTIES),
7226 &instance->snapdump_prop_h, GFP_KERNEL);
7227
7228 if (!instance->snapdump_prop)
7229 dev_err(&pdev->dev,
7230 "Failed to allocate snapdump properties buffer\n");
7231
7232 instance->host_device_list_buf = dma_alloc_coherent(&pdev->dev,
7233 HOST_DEVICE_LIST_SZ,
7234 &instance->host_device_list_buf_h,
7235 GFP_KERNEL);
7236
7237 if (!instance->host_device_list_buf) {
7238 dev_err(&pdev->dev,
7239 "Failed to allocate targetid list buffer\n");
7240 return -ENOMEM;
7241 }
7242
7243 }
7244
7245 instance->pd_list_buf =
7246 dma_alloc_coherent(&pdev->dev,
7247 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7248 &instance->pd_list_buf_h, GFP_KERNEL);
7249
7250 if (!instance->pd_list_buf) {
7251 dev_err(&pdev->dev, "Failed to allocate PD list buffer\n");
7252 return -ENOMEM;
7253 }
7254
7255 instance->ctrl_info_buf =
7256 dma_alloc_coherent(&pdev->dev,
7257 sizeof(struct megasas_ctrl_info),
7258 &instance->ctrl_info_buf_h, GFP_KERNEL);
7259
7260 if (!instance->ctrl_info_buf) {
7261 dev_err(&pdev->dev,
7262 "Failed to allocate controller info buffer\n");
7263 return -ENOMEM;
7264 }
7265
7266 instance->ld_list_buf =
7267 dma_alloc_coherent(&pdev->dev,
7268 sizeof(struct MR_LD_LIST),
7269 &instance->ld_list_buf_h, GFP_KERNEL);
7270
7271 if (!instance->ld_list_buf) {
7272 dev_err(&pdev->dev, "Failed to allocate LD list buffer\n");
7273 return -ENOMEM;
7274 }
7275
7276 instance->ld_targetid_list_buf =
7277 dma_alloc_coherent(&pdev->dev,
7278 sizeof(struct MR_LD_TARGETID_LIST),
7279 &instance->ld_targetid_list_buf_h, GFP_KERNEL);
7280
7281 if (!instance->ld_targetid_list_buf) {
7282 dev_err(&pdev->dev,
7283 "Failed to allocate LD targetid list buffer\n");
7284 return -ENOMEM;
7285 }
7286
7287 if (!reset_devices) {
7288 instance->system_info_buf =
7289 dma_alloc_coherent(&pdev->dev,
7290 sizeof(struct MR_DRV_SYSTEM_INFO),
7291 &instance->system_info_h, GFP_KERNEL);
7292 instance->pd_info =
7293 dma_alloc_coherent(&pdev->dev,
7294 sizeof(struct MR_PD_INFO),
7295 &instance->pd_info_h, GFP_KERNEL);
7296 instance->tgt_prop =
7297 dma_alloc_coherent(&pdev->dev,
7298 sizeof(struct MR_TARGET_PROPERTIES),
7299 &instance->tgt_prop_h, GFP_KERNEL);
7300 instance->crash_dump_buf =
7301 dma_alloc_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7302 &instance->crash_dump_h, GFP_KERNEL);
7303
7304 if (!instance->system_info_buf)
7305 dev_err(&instance->pdev->dev,
7306 "Failed to allocate system info buffer\n");
7307
7308 if (!instance->pd_info)
7309 dev_err(&instance->pdev->dev,
7310 "Failed to allocate pd_info buffer\n");
7311
7312 if (!instance->tgt_prop)
7313 dev_err(&instance->pdev->dev,
7314 "Failed to allocate tgt_prop buffer\n");
7315
7316 if (!instance->crash_dump_buf)
7317 dev_err(&instance->pdev->dev,
7318 "Failed to allocate crash dump buffer\n");
7319 }
7320
7321 return 0;
7322 }
7323
7324 /*
7325 * megasas_free_ctrl_dma_buffers - Free consistent DMA buffers allocated
7326 * during driver load time
7327 *
7328 * @instance- Adapter soft instance
7329 *
7330 */
7331 static inline
megasas_free_ctrl_dma_buffers(struct megasas_instance * instance)7332 void megasas_free_ctrl_dma_buffers(struct megasas_instance *instance)
7333 {
7334 struct pci_dev *pdev = instance->pdev;
7335 struct fusion_context *fusion = instance->ctrl_context;
7336
7337 if (instance->evt_detail)
7338 dma_free_coherent(&pdev->dev, sizeof(struct megasas_evt_detail),
7339 instance->evt_detail,
7340 instance->evt_detail_h);
7341
7342 if (fusion && fusion->ioc_init_request)
7343 dma_free_coherent(&pdev->dev,
7344 sizeof(struct MPI2_IOC_INIT_REQUEST),
7345 fusion->ioc_init_request,
7346 fusion->ioc_init_request_phys);
7347
7348 if (instance->pd_list_buf)
7349 dma_free_coherent(&pdev->dev,
7350 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7351 instance->pd_list_buf,
7352 instance->pd_list_buf_h);
7353
7354 if (instance->ld_list_buf)
7355 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_LIST),
7356 instance->ld_list_buf,
7357 instance->ld_list_buf_h);
7358
7359 if (instance->ld_targetid_list_buf)
7360 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_TARGETID_LIST),
7361 instance->ld_targetid_list_buf,
7362 instance->ld_targetid_list_buf_h);
7363
7364 if (instance->ctrl_info_buf)
7365 dma_free_coherent(&pdev->dev, sizeof(struct megasas_ctrl_info),
7366 instance->ctrl_info_buf,
7367 instance->ctrl_info_buf_h);
7368
7369 if (instance->system_info_buf)
7370 dma_free_coherent(&pdev->dev, sizeof(struct MR_DRV_SYSTEM_INFO),
7371 instance->system_info_buf,
7372 instance->system_info_h);
7373
7374 if (instance->pd_info)
7375 dma_free_coherent(&pdev->dev, sizeof(struct MR_PD_INFO),
7376 instance->pd_info, instance->pd_info_h);
7377
7378 if (instance->tgt_prop)
7379 dma_free_coherent(&pdev->dev, sizeof(struct MR_TARGET_PROPERTIES),
7380 instance->tgt_prop, instance->tgt_prop_h);
7381
7382 if (instance->crash_dump_buf)
7383 dma_free_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7384 instance->crash_dump_buf,
7385 instance->crash_dump_h);
7386
7387 if (instance->snapdump_prop)
7388 dma_free_coherent(&pdev->dev,
7389 sizeof(struct MR_SNAPDUMP_PROPERTIES),
7390 instance->snapdump_prop,
7391 instance->snapdump_prop_h);
7392
7393 if (instance->host_device_list_buf)
7394 dma_free_coherent(&pdev->dev,
7395 HOST_DEVICE_LIST_SZ,
7396 instance->host_device_list_buf,
7397 instance->host_device_list_buf_h);
7398
7399 }
7400
7401 /*
7402 * megasas_init_ctrl_params - Initialize controller's instance
7403 * parameters before FW init
7404 * @instance - Adapter soft instance
7405 * @return - void
7406 */
megasas_init_ctrl_params(struct megasas_instance * instance)7407 static inline void megasas_init_ctrl_params(struct megasas_instance *instance)
7408 {
7409 instance->fw_crash_state = UNAVAILABLE;
7410
7411 megasas_poll_wait_aen = 0;
7412 instance->issuepend_done = 1;
7413 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
7414
7415 /*
7416 * Initialize locks and queues
7417 */
7418 INIT_LIST_HEAD(&instance->cmd_pool);
7419 INIT_LIST_HEAD(&instance->internal_reset_pending_q);
7420
7421 atomic_set(&instance->fw_outstanding, 0);
7422 atomic64_set(&instance->total_io_count, 0);
7423
7424 init_waitqueue_head(&instance->int_cmd_wait_q);
7425 init_waitqueue_head(&instance->abort_cmd_wait_q);
7426
7427 mutex_init(&instance->crashdump_lock);
7428 spin_lock_init(&instance->mfi_pool_lock);
7429 spin_lock_init(&instance->hba_lock);
7430 spin_lock_init(&instance->stream_lock);
7431 spin_lock_init(&instance->completion_lock);
7432
7433 mutex_init(&instance->reset_mutex);
7434
7435 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
7436 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
7437 instance->flag_ieee = 1;
7438
7439 instance->flag = 0;
7440 instance->unload = 1;
7441 instance->last_time = 0;
7442 instance->disableOnlineCtrlReset = 1;
7443 instance->UnevenSpanSupport = 0;
7444 instance->smp_affinity_enable = smp_affinity_enable ? true : false;
7445 instance->msix_load_balance = false;
7446
7447 if (instance->adapter_type != MFI_SERIES)
7448 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
7449 else
7450 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
7451 }
7452
7453 /**
7454 * megasas_probe_one - PCI hotplug entry point
7455 * @pdev: PCI device structure
7456 * @id: PCI ids of supported hotplugged adapter
7457 */
megasas_probe_one(struct pci_dev * pdev,const struct pci_device_id * id)7458 static int megasas_probe_one(struct pci_dev *pdev,
7459 const struct pci_device_id *id)
7460 {
7461 int rval, pos;
7462 struct Scsi_Host *host;
7463 struct megasas_instance *instance;
7464 u16 control = 0;
7465
7466 switch (pdev->device) {
7467 case PCI_DEVICE_ID_LSI_AERO_10E0:
7468 case PCI_DEVICE_ID_LSI_AERO_10E3:
7469 case PCI_DEVICE_ID_LSI_AERO_10E4:
7470 case PCI_DEVICE_ID_LSI_AERO_10E7:
7471 dev_err(&pdev->dev, "Adapter is in non secure mode\n");
7472 return 1;
7473 case PCI_DEVICE_ID_LSI_AERO_10E1:
7474 case PCI_DEVICE_ID_LSI_AERO_10E5:
7475 dev_info(&pdev->dev, "Adapter is in configurable secure mode\n");
7476 break;
7477 }
7478
7479 /* Reset MSI-X in the kdump kernel */
7480 if (reset_devices) {
7481 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
7482 if (pos) {
7483 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
7484 &control);
7485 if (control & PCI_MSIX_FLAGS_ENABLE) {
7486 dev_info(&pdev->dev, "resetting MSI-X\n");
7487 pci_write_config_word(pdev,
7488 pos + PCI_MSIX_FLAGS,
7489 control &
7490 ~PCI_MSIX_FLAGS_ENABLE);
7491 }
7492 }
7493 }
7494
7495 /*
7496 * PCI prepping: enable device set bus mastering and dma mask
7497 */
7498 rval = pci_enable_device_mem(pdev);
7499
7500 if (rval) {
7501 return rval;
7502 }
7503
7504 pci_set_master(pdev);
7505
7506 host = scsi_host_alloc(&megasas_template,
7507 sizeof(struct megasas_instance));
7508
7509 if (!host) {
7510 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n");
7511 goto fail_alloc_instance;
7512 }
7513
7514 instance = (struct megasas_instance *)host->hostdata;
7515 memset(instance, 0, sizeof(*instance));
7516 atomic_set(&instance->fw_reset_no_pci_access, 0);
7517
7518 /*
7519 * Initialize PCI related and misc parameters
7520 */
7521 instance->pdev = pdev;
7522 instance->host = host;
7523 instance->unique_id = pci_dev_id(pdev);
7524 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
7525
7526 megasas_set_adapter_type(instance);
7527
7528 /*
7529 * Initialize MFI Firmware
7530 */
7531 if (megasas_init_fw(instance))
7532 goto fail_init_mfi;
7533
7534 if (instance->requestorId) {
7535 if (instance->PlasmaFW111) {
7536 instance->vf_affiliation_111 =
7537 dma_alloc_coherent(&pdev->dev,
7538 sizeof(struct MR_LD_VF_AFFILIATION_111),
7539 &instance->vf_affiliation_111_h,
7540 GFP_KERNEL);
7541 if (!instance->vf_affiliation_111)
7542 dev_warn(&pdev->dev, "Can't allocate "
7543 "memory for VF affiliation buffer\n");
7544 } else {
7545 instance->vf_affiliation =
7546 dma_alloc_coherent(&pdev->dev,
7547 (MAX_LOGICAL_DRIVES + 1) *
7548 sizeof(struct MR_LD_VF_AFFILIATION),
7549 &instance->vf_affiliation_h,
7550 GFP_KERNEL);
7551 if (!instance->vf_affiliation)
7552 dev_warn(&pdev->dev, "Can't allocate "
7553 "memory for VF affiliation buffer\n");
7554 }
7555 }
7556
7557 /*
7558 * Store instance in PCI softstate
7559 */
7560 pci_set_drvdata(pdev, instance);
7561
7562 /*
7563 * Add this controller to megasas_mgmt_info structure so that it
7564 * can be exported to management applications
7565 */
7566 megasas_mgmt_info.count++;
7567 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
7568 megasas_mgmt_info.max_index++;
7569
7570 /*
7571 * Register with SCSI mid-layer
7572 */
7573 if (megasas_io_attach(instance))
7574 goto fail_io_attach;
7575
7576 instance->unload = 0;
7577 /*
7578 * Trigger SCSI to scan our drives
7579 */
7580 if (!instance->enable_fw_dev_list ||
7581 (instance->host_device_list_buf->count > 0))
7582 scsi_scan_host(host);
7583
7584 /*
7585 * Initiate AEN (Asynchronous Event Notification)
7586 */
7587 if (megasas_start_aen(instance)) {
7588 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n");
7589 goto fail_start_aen;
7590 }
7591
7592 megasas_setup_debugfs(instance);
7593
7594 /* Get current SR-IOV LD/VF affiliation */
7595 if (instance->requestorId)
7596 megasas_get_ld_vf_affiliation(instance, 1);
7597
7598 return 0;
7599
7600 fail_start_aen:
7601 instance->unload = 1;
7602 scsi_remove_host(instance->host);
7603 fail_io_attach:
7604 megasas_mgmt_info.count--;
7605 megasas_mgmt_info.max_index--;
7606 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
7607
7608 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7609 del_timer_sync(&instance->sriov_heartbeat_timer);
7610
7611 instance->instancet->disable_intr(instance);
7612 megasas_destroy_irqs(instance);
7613
7614 if (instance->adapter_type != MFI_SERIES)
7615 megasas_release_fusion(instance);
7616 else
7617 megasas_release_mfi(instance);
7618
7619 if (instance->msix_vectors)
7620 pci_free_irq_vectors(instance->pdev);
7621 instance->msix_vectors = 0;
7622
7623 if (instance->fw_crash_state != UNAVAILABLE)
7624 megasas_free_host_crash_buffer(instance);
7625
7626 if (instance->adapter_type != MFI_SERIES)
7627 megasas_fusion_stop_watchdog(instance);
7628 fail_init_mfi:
7629 scsi_host_put(host);
7630 fail_alloc_instance:
7631 pci_disable_device(pdev);
7632
7633 return -ENODEV;
7634 }
7635
7636 /**
7637 * megasas_flush_cache - Requests FW to flush all its caches
7638 * @instance: Adapter soft state
7639 */
megasas_flush_cache(struct megasas_instance * instance)7640 static void megasas_flush_cache(struct megasas_instance *instance)
7641 {
7642 struct megasas_cmd *cmd;
7643 struct megasas_dcmd_frame *dcmd;
7644
7645 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7646 return;
7647
7648 cmd = megasas_get_cmd(instance);
7649
7650 if (!cmd)
7651 return;
7652
7653 dcmd = &cmd->frame->dcmd;
7654
7655 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7656
7657 dcmd->cmd = MFI_CMD_DCMD;
7658 dcmd->cmd_status = 0x0;
7659 dcmd->sge_count = 0;
7660 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7661 dcmd->timeout = 0;
7662 dcmd->pad_0 = 0;
7663 dcmd->data_xfer_len = 0;
7664 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
7665 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
7666
7667 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7668 != DCMD_SUCCESS) {
7669 dev_err(&instance->pdev->dev,
7670 "return from %s %d\n", __func__, __LINE__);
7671 return;
7672 }
7673
7674 megasas_return_cmd(instance, cmd);
7675 }
7676
7677 /**
7678 * megasas_shutdown_controller - Instructs FW to shutdown the controller
7679 * @instance: Adapter soft state
7680 * @opcode: Shutdown/Hibernate
7681 */
megasas_shutdown_controller(struct megasas_instance * instance,u32 opcode)7682 static void megasas_shutdown_controller(struct megasas_instance *instance,
7683 u32 opcode)
7684 {
7685 struct megasas_cmd *cmd;
7686 struct megasas_dcmd_frame *dcmd;
7687
7688 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7689 return;
7690
7691 cmd = megasas_get_cmd(instance);
7692
7693 if (!cmd)
7694 return;
7695
7696 if (instance->aen_cmd)
7697 megasas_issue_blocked_abort_cmd(instance,
7698 instance->aen_cmd, MFI_IO_TIMEOUT_SECS);
7699 if (instance->map_update_cmd)
7700 megasas_issue_blocked_abort_cmd(instance,
7701 instance->map_update_cmd, MFI_IO_TIMEOUT_SECS);
7702 if (instance->jbod_seq_cmd)
7703 megasas_issue_blocked_abort_cmd(instance,
7704 instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS);
7705
7706 dcmd = &cmd->frame->dcmd;
7707
7708 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7709
7710 dcmd->cmd = MFI_CMD_DCMD;
7711 dcmd->cmd_status = 0x0;
7712 dcmd->sge_count = 0;
7713 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7714 dcmd->timeout = 0;
7715 dcmd->pad_0 = 0;
7716 dcmd->data_xfer_len = 0;
7717 dcmd->opcode = cpu_to_le32(opcode);
7718
7719 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7720 != DCMD_SUCCESS) {
7721 dev_err(&instance->pdev->dev,
7722 "return from %s %d\n", __func__, __LINE__);
7723 return;
7724 }
7725
7726 megasas_return_cmd(instance, cmd);
7727 }
7728
7729 /**
7730 * megasas_suspend - driver suspend entry point
7731 * @dev: Device structure
7732 */
7733 static int __maybe_unused
megasas_suspend(struct device * dev)7734 megasas_suspend(struct device *dev)
7735 {
7736 struct megasas_instance *instance;
7737
7738 instance = dev_get_drvdata(dev);
7739
7740 if (!instance)
7741 return 0;
7742
7743 instance->unload = 1;
7744
7745 dev_info(dev, "%s is called\n", __func__);
7746
7747 /* Shutdown SR-IOV heartbeat timer */
7748 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7749 del_timer_sync(&instance->sriov_heartbeat_timer);
7750
7751 /* Stop the FW fault detection watchdog */
7752 if (instance->adapter_type != MFI_SERIES)
7753 megasas_fusion_stop_watchdog(instance);
7754
7755 megasas_flush_cache(instance);
7756 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
7757
7758 /* cancel the delayed work if this work still in queue */
7759 if (instance->ev != NULL) {
7760 struct megasas_aen_event *ev = instance->ev;
7761 cancel_delayed_work_sync(&ev->hotplug_work);
7762 instance->ev = NULL;
7763 }
7764
7765 tasklet_kill(&instance->isr_tasklet);
7766
7767 pci_set_drvdata(instance->pdev, instance);
7768 instance->instancet->disable_intr(instance);
7769
7770 megasas_destroy_irqs(instance);
7771
7772 if (instance->msix_vectors)
7773 pci_free_irq_vectors(instance->pdev);
7774
7775 return 0;
7776 }
7777
7778 /**
7779 * megasas_resume- driver resume entry point
7780 * @dev: Device structure
7781 */
7782 static int __maybe_unused
megasas_resume(struct device * dev)7783 megasas_resume(struct device *dev)
7784 {
7785 int rval;
7786 struct Scsi_Host *host;
7787 struct megasas_instance *instance;
7788 u32 status_reg;
7789
7790 instance = dev_get_drvdata(dev);
7791
7792 if (!instance)
7793 return 0;
7794
7795 host = instance->host;
7796
7797 dev_info(dev, "%s is called\n", __func__);
7798
7799 /*
7800 * We expect the FW state to be READY
7801 */
7802
7803 if (megasas_transition_to_ready(instance, 0)) {
7804 dev_info(&instance->pdev->dev,
7805 "Failed to transition controller to ready from %s!\n",
7806 __func__);
7807 if (instance->adapter_type != MFI_SERIES) {
7808 status_reg =
7809 instance->instancet->read_fw_status_reg(instance);
7810 if (!(status_reg & MFI_RESET_ADAPTER) ||
7811 ((megasas_adp_reset_wait_for_ready
7812 (instance, true, 0)) == FAILED))
7813 goto fail_ready_state;
7814 } else {
7815 atomic_set(&instance->fw_reset_no_pci_access, 1);
7816 instance->instancet->adp_reset
7817 (instance, instance->reg_set);
7818 atomic_set(&instance->fw_reset_no_pci_access, 0);
7819
7820 /* waiting for about 30 seconds before retry */
7821 ssleep(30);
7822
7823 if (megasas_transition_to_ready(instance, 0))
7824 goto fail_ready_state;
7825 }
7826
7827 dev_info(&instance->pdev->dev,
7828 "FW restarted successfully from %s!\n",
7829 __func__);
7830 }
7831 if (megasas_set_dma_mask(instance))
7832 goto fail_set_dma_mask;
7833
7834 /*
7835 * Initialize MFI Firmware
7836 */
7837
7838 atomic_set(&instance->fw_outstanding, 0);
7839 atomic_set(&instance->ldio_outstanding, 0);
7840
7841 /* Now re-enable MSI-X */
7842 if (instance->msix_vectors)
7843 megasas_alloc_irq_vectors(instance);
7844
7845 if (!instance->msix_vectors) {
7846 rval = pci_alloc_irq_vectors(instance->pdev, 1, 1,
7847 PCI_IRQ_LEGACY);
7848 if (rval < 0)
7849 goto fail_reenable_msix;
7850 }
7851
7852 megasas_setup_reply_map(instance);
7853
7854 if (instance->adapter_type != MFI_SERIES) {
7855 megasas_reset_reply_desc(instance);
7856 if (megasas_ioc_init_fusion(instance)) {
7857 megasas_free_cmds(instance);
7858 megasas_free_cmds_fusion(instance);
7859 goto fail_init_mfi;
7860 }
7861 if (!megasas_get_map_info(instance))
7862 megasas_sync_map_info(instance);
7863 } else {
7864 *instance->producer = 0;
7865 *instance->consumer = 0;
7866 if (megasas_issue_init_mfi(instance))
7867 goto fail_init_mfi;
7868 }
7869
7870 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS)
7871 goto fail_init_mfi;
7872
7873 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
7874 (unsigned long)instance);
7875
7876 if (instance->msix_vectors ?
7877 megasas_setup_irqs_msix(instance, 0) :
7878 megasas_setup_irqs_ioapic(instance))
7879 goto fail_init_mfi;
7880
7881 if (instance->adapter_type != MFI_SERIES)
7882 megasas_setup_irq_poll(instance);
7883
7884 /* Re-launch SR-IOV heartbeat timer */
7885 if (instance->requestorId) {
7886 if (!megasas_sriov_start_heartbeat(instance, 0))
7887 megasas_start_timer(instance);
7888 else {
7889 instance->skip_heartbeat_timer_del = 1;
7890 goto fail_init_mfi;
7891 }
7892 }
7893
7894 instance->instancet->enable_intr(instance);
7895 megasas_setup_jbod_map(instance);
7896 instance->unload = 0;
7897
7898 /*
7899 * Initiate AEN (Asynchronous Event Notification)
7900 */
7901 if (megasas_start_aen(instance))
7902 dev_err(&instance->pdev->dev, "Start AEN failed\n");
7903
7904 /* Re-launch FW fault watchdog */
7905 if (instance->adapter_type != MFI_SERIES)
7906 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
7907 goto fail_start_watchdog;
7908
7909 return 0;
7910
7911 fail_start_watchdog:
7912 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7913 del_timer_sync(&instance->sriov_heartbeat_timer);
7914 fail_init_mfi:
7915 megasas_free_ctrl_dma_buffers(instance);
7916 megasas_free_ctrl_mem(instance);
7917 scsi_host_put(host);
7918
7919 fail_reenable_msix:
7920 fail_set_dma_mask:
7921 fail_ready_state:
7922
7923 return -ENODEV;
7924 }
7925
7926 static inline int
megasas_wait_for_adapter_operational(struct megasas_instance * instance)7927 megasas_wait_for_adapter_operational(struct megasas_instance *instance)
7928 {
7929 int wait_time = MEGASAS_RESET_WAIT_TIME * 2;
7930 int i;
7931 u8 adp_state;
7932
7933 for (i = 0; i < wait_time; i++) {
7934 adp_state = atomic_read(&instance->adprecovery);
7935 if ((adp_state == MEGASAS_HBA_OPERATIONAL) ||
7936 (adp_state == MEGASAS_HW_CRITICAL_ERROR))
7937 break;
7938
7939 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL))
7940 dev_notice(&instance->pdev->dev, "waiting for controller reset to finish\n");
7941
7942 msleep(1000);
7943 }
7944
7945 if (adp_state != MEGASAS_HBA_OPERATIONAL) {
7946 dev_info(&instance->pdev->dev,
7947 "%s HBA failed to become operational, adp_state %d\n",
7948 __func__, adp_state);
7949 return 1;
7950 }
7951
7952 return 0;
7953 }
7954
7955 /**
7956 * megasas_detach_one - PCI hot"un"plug entry point
7957 * @pdev: PCI device structure
7958 */
megasas_detach_one(struct pci_dev * pdev)7959 static void megasas_detach_one(struct pci_dev *pdev)
7960 {
7961 int i;
7962 struct Scsi_Host *host;
7963 struct megasas_instance *instance;
7964 struct fusion_context *fusion;
7965 size_t pd_seq_map_sz;
7966
7967 instance = pci_get_drvdata(pdev);
7968
7969 if (!instance)
7970 return;
7971
7972 host = instance->host;
7973 fusion = instance->ctrl_context;
7974
7975 /* Shutdown SR-IOV heartbeat timer */
7976 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7977 del_timer_sync(&instance->sriov_heartbeat_timer);
7978
7979 /* Stop the FW fault detection watchdog */
7980 if (instance->adapter_type != MFI_SERIES)
7981 megasas_fusion_stop_watchdog(instance);
7982
7983 if (instance->fw_crash_state != UNAVAILABLE)
7984 megasas_free_host_crash_buffer(instance);
7985 scsi_remove_host(instance->host);
7986 instance->unload = 1;
7987
7988 if (megasas_wait_for_adapter_operational(instance))
7989 goto skip_firing_dcmds;
7990
7991 megasas_flush_cache(instance);
7992 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7993
7994 skip_firing_dcmds:
7995 /* cancel the delayed work if this work still in queue*/
7996 if (instance->ev != NULL) {
7997 struct megasas_aen_event *ev = instance->ev;
7998 cancel_delayed_work_sync(&ev->hotplug_work);
7999 instance->ev = NULL;
8000 }
8001
8002 /* cancel all wait events */
8003 wake_up_all(&instance->int_cmd_wait_q);
8004
8005 tasklet_kill(&instance->isr_tasklet);
8006
8007 /*
8008 * Take the instance off the instance array. Note that we will not
8009 * decrement the max_index. We let this array be sparse array
8010 */
8011 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
8012 if (megasas_mgmt_info.instance[i] == instance) {
8013 megasas_mgmt_info.count--;
8014 megasas_mgmt_info.instance[i] = NULL;
8015
8016 break;
8017 }
8018 }
8019
8020 instance->instancet->disable_intr(instance);
8021
8022 megasas_destroy_irqs(instance);
8023
8024 if (instance->msix_vectors)
8025 pci_free_irq_vectors(instance->pdev);
8026
8027 if (instance->adapter_type >= VENTURA_SERIES) {
8028 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i)
8029 kfree(fusion->stream_detect_by_ld[i]);
8030 kfree(fusion->stream_detect_by_ld);
8031 fusion->stream_detect_by_ld = NULL;
8032 }
8033
8034
8035 if (instance->adapter_type != MFI_SERIES) {
8036 megasas_release_fusion(instance);
8037 pd_seq_map_sz =
8038 struct_size_t(struct MR_PD_CFG_SEQ_NUM_SYNC,
8039 seq, MAX_PHYSICAL_DEVICES);
8040 for (i = 0; i < 2 ; i++) {
8041 if (fusion->ld_map[i])
8042 dma_free_coherent(&instance->pdev->dev,
8043 fusion->max_map_sz,
8044 fusion->ld_map[i],
8045 fusion->ld_map_phys[i]);
8046 if (fusion->ld_drv_map[i]) {
8047 if (is_vmalloc_addr(fusion->ld_drv_map[i]))
8048 vfree(fusion->ld_drv_map[i]);
8049 else
8050 free_pages((ulong)fusion->ld_drv_map[i],
8051 fusion->drv_map_pages);
8052 }
8053
8054 if (fusion->pd_seq_sync[i])
8055 dma_free_coherent(&instance->pdev->dev,
8056 pd_seq_map_sz,
8057 fusion->pd_seq_sync[i],
8058 fusion->pd_seq_phys[i]);
8059 }
8060 } else {
8061 megasas_release_mfi(instance);
8062 }
8063
8064 if (instance->vf_affiliation)
8065 dma_free_coherent(&pdev->dev, (MAX_LOGICAL_DRIVES + 1) *
8066 sizeof(struct MR_LD_VF_AFFILIATION),
8067 instance->vf_affiliation,
8068 instance->vf_affiliation_h);
8069
8070 if (instance->vf_affiliation_111)
8071 dma_free_coherent(&pdev->dev,
8072 sizeof(struct MR_LD_VF_AFFILIATION_111),
8073 instance->vf_affiliation_111,
8074 instance->vf_affiliation_111_h);
8075
8076 if (instance->hb_host_mem)
8077 dma_free_coherent(&pdev->dev, sizeof(struct MR_CTRL_HB_HOST_MEM),
8078 instance->hb_host_mem,
8079 instance->hb_host_mem_h);
8080
8081 megasas_free_ctrl_dma_buffers(instance);
8082
8083 megasas_free_ctrl_mem(instance);
8084
8085 megasas_destroy_debugfs(instance);
8086
8087 scsi_host_put(host);
8088
8089 pci_disable_device(pdev);
8090 }
8091
8092 /**
8093 * megasas_shutdown - Shutdown entry point
8094 * @pdev: PCI device structure
8095 */
megasas_shutdown(struct pci_dev * pdev)8096 static void megasas_shutdown(struct pci_dev *pdev)
8097 {
8098 struct megasas_instance *instance = pci_get_drvdata(pdev);
8099
8100 if (!instance)
8101 return;
8102
8103 instance->unload = 1;
8104
8105 if (megasas_wait_for_adapter_operational(instance))
8106 goto skip_firing_dcmds;
8107
8108 megasas_flush_cache(instance);
8109 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
8110
8111 skip_firing_dcmds:
8112 instance->instancet->disable_intr(instance);
8113 megasas_destroy_irqs(instance);
8114
8115 if (instance->msix_vectors)
8116 pci_free_irq_vectors(instance->pdev);
8117 }
8118
8119 /*
8120 * megasas_mgmt_open - char node "open" entry point
8121 * @inode: char node inode
8122 * @filep: char node file
8123 */
megasas_mgmt_open(struct inode * inode,struct file * filep)8124 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
8125 {
8126 /*
8127 * Allow only those users with admin rights
8128 */
8129 if (!capable(CAP_SYS_ADMIN))
8130 return -EACCES;
8131
8132 return 0;
8133 }
8134
8135 /*
8136 * megasas_mgmt_fasync - Async notifier registration from applications
8137 * @fd: char node file descriptor number
8138 * @filep: char node file
8139 * @mode: notifier on/off
8140 *
8141 * This function adds the calling process to a driver global queue. When an
8142 * event occurs, SIGIO will be sent to all processes in this queue.
8143 */
megasas_mgmt_fasync(int fd,struct file * filep,int mode)8144 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
8145 {
8146 int rc;
8147
8148 mutex_lock(&megasas_async_queue_mutex);
8149
8150 rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
8151
8152 mutex_unlock(&megasas_async_queue_mutex);
8153
8154 if (rc >= 0) {
8155 /* For sanity check when we get ioctl */
8156 filep->private_data = filep;
8157 return 0;
8158 }
8159
8160 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
8161
8162 return rc;
8163 }
8164
8165 /*
8166 * megasas_mgmt_poll - char node "poll" entry point
8167 * @filep: char node file
8168 * @wait: Events to poll for
8169 */
megasas_mgmt_poll(struct file * file,poll_table * wait)8170 static __poll_t megasas_mgmt_poll(struct file *file, poll_table *wait)
8171 {
8172 __poll_t mask;
8173 unsigned long flags;
8174
8175 poll_wait(file, &megasas_poll_wait, wait);
8176 spin_lock_irqsave(&poll_aen_lock, flags);
8177 if (megasas_poll_wait_aen)
8178 mask = (EPOLLIN | EPOLLRDNORM);
8179 else
8180 mask = 0;
8181 megasas_poll_wait_aen = 0;
8182 spin_unlock_irqrestore(&poll_aen_lock, flags);
8183 return mask;
8184 }
8185
8186 /*
8187 * megasas_set_crash_dump_params_ioctl:
8188 * Send CRASH_DUMP_MODE DCMD to all controllers
8189 * @cmd: MFI command frame
8190 */
8191
megasas_set_crash_dump_params_ioctl(struct megasas_cmd * cmd)8192 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd)
8193 {
8194 struct megasas_instance *local_instance;
8195 int i, error = 0;
8196 int crash_support;
8197
8198 crash_support = cmd->frame->dcmd.mbox.w[0];
8199
8200 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
8201 local_instance = megasas_mgmt_info.instance[i];
8202 if (local_instance && local_instance->crash_dump_drv_support) {
8203 if ((atomic_read(&local_instance->adprecovery) ==
8204 MEGASAS_HBA_OPERATIONAL) &&
8205 !megasas_set_crash_dump_params(local_instance,
8206 crash_support)) {
8207 local_instance->crash_dump_app_support =
8208 crash_support;
8209 dev_info(&local_instance->pdev->dev,
8210 "Application firmware crash "
8211 "dump mode set success\n");
8212 error = 0;
8213 } else {
8214 dev_info(&local_instance->pdev->dev,
8215 "Application firmware crash "
8216 "dump mode set failed\n");
8217 error = -1;
8218 }
8219 }
8220 }
8221 return error;
8222 }
8223
8224 /**
8225 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
8226 * @instance: Adapter soft state
8227 * @user_ioc: User's ioctl packet
8228 * @ioc: ioctl packet
8229 */
8230 static int
megasas_mgmt_fw_ioctl(struct megasas_instance * instance,struct megasas_iocpacket __user * user_ioc,struct megasas_iocpacket * ioc)8231 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
8232 struct megasas_iocpacket __user * user_ioc,
8233 struct megasas_iocpacket *ioc)
8234 {
8235 struct megasas_sge64 *kern_sge64 = NULL;
8236 struct megasas_sge32 *kern_sge32 = NULL;
8237 struct megasas_cmd *cmd;
8238 void *kbuff_arr[MAX_IOCTL_SGE];
8239 dma_addr_t buf_handle = 0;
8240 int error = 0, i;
8241 void *sense = NULL;
8242 dma_addr_t sense_handle;
8243 void *sense_ptr;
8244 u32 opcode = 0;
8245 int ret = DCMD_SUCCESS;
8246
8247 memset(kbuff_arr, 0, sizeof(kbuff_arr));
8248
8249 if (ioc->sge_count > MAX_IOCTL_SGE) {
8250 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] > max limit [%d]\n",
8251 ioc->sge_count, MAX_IOCTL_SGE);
8252 return -EINVAL;
8253 }
8254
8255 if ((ioc->frame.hdr.cmd >= MFI_CMD_OP_COUNT) ||
8256 ((ioc->frame.hdr.cmd == MFI_CMD_NVME) &&
8257 !instance->support_nvme_passthru) ||
8258 ((ioc->frame.hdr.cmd == MFI_CMD_TOOLBOX) &&
8259 !instance->support_pci_lane_margining)) {
8260 dev_err(&instance->pdev->dev,
8261 "Received invalid ioctl command 0x%x\n",
8262 ioc->frame.hdr.cmd);
8263 return -ENOTSUPP;
8264 }
8265
8266 cmd = megasas_get_cmd(instance);
8267 if (!cmd) {
8268 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n");
8269 return -ENOMEM;
8270 }
8271
8272 /*
8273 * User's IOCTL packet has 2 frames (maximum). Copy those two
8274 * frames into our cmd's frames. cmd->frame's context will get
8275 * overwritten when we copy from user's frames. So set that value
8276 * alone separately
8277 */
8278 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
8279 cmd->frame->hdr.context = cpu_to_le32(cmd->index);
8280 cmd->frame->hdr.pad_0 = 0;
8281
8282 cmd->frame->hdr.flags &= (~MFI_FRAME_IEEE);
8283
8284 if (instance->consistent_mask_64bit)
8285 cmd->frame->hdr.flags |= cpu_to_le16((MFI_FRAME_SGL64 |
8286 MFI_FRAME_SENSE64));
8287 else
8288 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_SGL64 |
8289 MFI_FRAME_SENSE64));
8290
8291 if (cmd->frame->hdr.cmd == MFI_CMD_DCMD)
8292 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
8293
8294 if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
8295 mutex_lock(&instance->reset_mutex);
8296 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) {
8297 megasas_return_cmd(instance, cmd);
8298 mutex_unlock(&instance->reset_mutex);
8299 return -1;
8300 }
8301 mutex_unlock(&instance->reset_mutex);
8302 }
8303
8304 if (opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) {
8305 error = megasas_set_crash_dump_params_ioctl(cmd);
8306 megasas_return_cmd(instance, cmd);
8307 return error;
8308 }
8309
8310 /*
8311 * The management interface between applications and the fw uses
8312 * MFI frames. E.g, RAID configuration changes, LD property changes
8313 * etc are accomplishes through different kinds of MFI frames. The
8314 * driver needs to care only about substituting user buffers with
8315 * kernel buffers in SGLs. The location of SGL is embedded in the
8316 * struct iocpacket itself.
8317 */
8318 if (instance->consistent_mask_64bit)
8319 kern_sge64 = (struct megasas_sge64 *)
8320 ((unsigned long)cmd->frame + ioc->sgl_off);
8321 else
8322 kern_sge32 = (struct megasas_sge32 *)
8323 ((unsigned long)cmd->frame + ioc->sgl_off);
8324
8325 /*
8326 * For each user buffer, create a mirror buffer and copy in
8327 */
8328 for (i = 0; i < ioc->sge_count; i++) {
8329 if (!ioc->sgl[i].iov_len)
8330 continue;
8331
8332 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
8333 ioc->sgl[i].iov_len,
8334 &buf_handle, GFP_KERNEL);
8335 if (!kbuff_arr[i]) {
8336 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc "
8337 "kernel SGL buffer for IOCTL\n");
8338 error = -ENOMEM;
8339 goto out;
8340 }
8341
8342 /*
8343 * We don't change the dma_coherent_mask, so
8344 * dma_alloc_coherent only returns 32bit addresses
8345 */
8346 if (instance->consistent_mask_64bit) {
8347 kern_sge64[i].phys_addr = cpu_to_le64(buf_handle);
8348 kern_sge64[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8349 } else {
8350 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
8351 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8352 }
8353
8354 /*
8355 * We created a kernel buffer corresponding to the
8356 * user buffer. Now copy in from the user buffer
8357 */
8358 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
8359 (u32) (ioc->sgl[i].iov_len))) {
8360 error = -EFAULT;
8361 goto out;
8362 }
8363 }
8364
8365 if (ioc->sense_len) {
8366 /* make sure the pointer is part of the frame */
8367 if (ioc->sense_off >
8368 (sizeof(union megasas_frame) - sizeof(__le64))) {
8369 error = -EINVAL;
8370 goto out;
8371 }
8372
8373 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
8374 &sense_handle, GFP_KERNEL);
8375 if (!sense) {
8376 error = -ENOMEM;
8377 goto out;
8378 }
8379
8380 /* always store 64 bits regardless of addressing */
8381 sense_ptr = (void *)cmd->frame + ioc->sense_off;
8382 put_unaligned_le64(sense_handle, sense_ptr);
8383 }
8384
8385 /*
8386 * Set the sync_cmd flag so that the ISR knows not to complete this
8387 * cmd to the SCSI mid-layer
8388 */
8389 cmd->sync_cmd = 1;
8390
8391 ret = megasas_issue_blocked_cmd(instance, cmd, 0);
8392 switch (ret) {
8393 case DCMD_INIT:
8394 case DCMD_BUSY:
8395 cmd->sync_cmd = 0;
8396 dev_err(&instance->pdev->dev,
8397 "return -EBUSY from %s %d cmd 0x%x opcode 0x%x cmd->cmd_status_drv 0x%x\n",
8398 __func__, __LINE__, cmd->frame->hdr.cmd, opcode,
8399 cmd->cmd_status_drv);
8400 error = -EBUSY;
8401 goto out;
8402 }
8403
8404 cmd->sync_cmd = 0;
8405
8406 if (instance->unload == 1) {
8407 dev_info(&instance->pdev->dev, "Driver unload is in progress "
8408 "don't submit data to application\n");
8409 goto out;
8410 }
8411 /*
8412 * copy out the kernel buffers to user buffers
8413 */
8414 for (i = 0; i < ioc->sge_count; i++) {
8415 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
8416 ioc->sgl[i].iov_len)) {
8417 error = -EFAULT;
8418 goto out;
8419 }
8420 }
8421
8422 /*
8423 * copy out the sense
8424 */
8425 if (ioc->sense_len) {
8426 void __user *uptr;
8427 /*
8428 * sense_ptr points to the location that has the user
8429 * sense buffer address
8430 */
8431 sense_ptr = (void *)ioc->frame.raw + ioc->sense_off;
8432 if (in_compat_syscall())
8433 uptr = compat_ptr(get_unaligned((compat_uptr_t *)
8434 sense_ptr));
8435 else
8436 uptr = get_unaligned((void __user **)sense_ptr);
8437
8438 if (copy_to_user(uptr, sense, ioc->sense_len)) {
8439 dev_err(&instance->pdev->dev, "Failed to copy out to user "
8440 "sense data\n");
8441 error = -EFAULT;
8442 goto out;
8443 }
8444 }
8445
8446 /*
8447 * copy the status codes returned by the fw
8448 */
8449 if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
8450 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
8451 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n");
8452 error = -EFAULT;
8453 }
8454
8455 out:
8456 if (sense) {
8457 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
8458 sense, sense_handle);
8459 }
8460
8461 for (i = 0; i < ioc->sge_count; i++) {
8462 if (kbuff_arr[i]) {
8463 if (instance->consistent_mask_64bit)
8464 dma_free_coherent(&instance->pdev->dev,
8465 le32_to_cpu(kern_sge64[i].length),
8466 kbuff_arr[i],
8467 le64_to_cpu(kern_sge64[i].phys_addr));
8468 else
8469 dma_free_coherent(&instance->pdev->dev,
8470 le32_to_cpu(kern_sge32[i].length),
8471 kbuff_arr[i],
8472 le32_to_cpu(kern_sge32[i].phys_addr));
8473 kbuff_arr[i] = NULL;
8474 }
8475 }
8476
8477 megasas_return_cmd(instance, cmd);
8478 return error;
8479 }
8480
8481 static struct megasas_iocpacket *
megasas_compat_iocpacket_get_user(void __user * arg)8482 megasas_compat_iocpacket_get_user(void __user *arg)
8483 {
8484 struct megasas_iocpacket *ioc;
8485 struct compat_megasas_iocpacket __user *cioc = arg;
8486 size_t size;
8487 int err = -EFAULT;
8488 int i;
8489
8490 ioc = kzalloc(sizeof(*ioc), GFP_KERNEL);
8491 if (!ioc)
8492 return ERR_PTR(-ENOMEM);
8493 size = offsetof(struct megasas_iocpacket, frame) + sizeof(ioc->frame);
8494 if (copy_from_user(ioc, arg, size))
8495 goto out;
8496
8497 for (i = 0; i < MAX_IOCTL_SGE; i++) {
8498 compat_uptr_t iov_base;
8499
8500 if (get_user(iov_base, &cioc->sgl[i].iov_base) ||
8501 get_user(ioc->sgl[i].iov_len, &cioc->sgl[i].iov_len))
8502 goto out;
8503
8504 ioc->sgl[i].iov_base = compat_ptr(iov_base);
8505 }
8506
8507 return ioc;
8508 out:
8509 kfree(ioc);
8510 return ERR_PTR(err);
8511 }
8512
megasas_mgmt_ioctl_fw(struct file * file,unsigned long arg)8513 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
8514 {
8515 struct megasas_iocpacket __user *user_ioc =
8516 (struct megasas_iocpacket __user *)arg;
8517 struct megasas_iocpacket *ioc;
8518 struct megasas_instance *instance;
8519 int error;
8520
8521 if (in_compat_syscall())
8522 ioc = megasas_compat_iocpacket_get_user(user_ioc);
8523 else
8524 ioc = memdup_user(user_ioc, sizeof(struct megasas_iocpacket));
8525
8526 if (IS_ERR(ioc))
8527 return PTR_ERR(ioc);
8528
8529 instance = megasas_lookup_instance(ioc->host_no);
8530 if (!instance) {
8531 error = -ENODEV;
8532 goto out_kfree_ioc;
8533 }
8534
8535 /* Block ioctls in VF mode */
8536 if (instance->requestorId && !allow_vf_ioctls) {
8537 error = -ENODEV;
8538 goto out_kfree_ioc;
8539 }
8540
8541 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8542 dev_err(&instance->pdev->dev, "Controller in crit error\n");
8543 error = -ENODEV;
8544 goto out_kfree_ioc;
8545 }
8546
8547 if (instance->unload == 1) {
8548 error = -ENODEV;
8549 goto out_kfree_ioc;
8550 }
8551
8552 if (down_interruptible(&instance->ioctl_sem)) {
8553 error = -ERESTARTSYS;
8554 goto out_kfree_ioc;
8555 }
8556
8557 if (megasas_wait_for_adapter_operational(instance)) {
8558 error = -ENODEV;
8559 goto out_up;
8560 }
8561
8562 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
8563 out_up:
8564 up(&instance->ioctl_sem);
8565
8566 out_kfree_ioc:
8567 kfree(ioc);
8568 return error;
8569 }
8570
megasas_mgmt_ioctl_aen(struct file * file,unsigned long arg)8571 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
8572 {
8573 struct megasas_instance *instance;
8574 struct megasas_aen aen;
8575 int error;
8576
8577 if (file->private_data != file) {
8578 printk(KERN_DEBUG "megasas: fasync_helper was not "
8579 "called first\n");
8580 return -EINVAL;
8581 }
8582
8583 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
8584 return -EFAULT;
8585
8586 instance = megasas_lookup_instance(aen.host_no);
8587
8588 if (!instance)
8589 return -ENODEV;
8590
8591 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8592 return -ENODEV;
8593 }
8594
8595 if (instance->unload == 1) {
8596 return -ENODEV;
8597 }
8598
8599 if (megasas_wait_for_adapter_operational(instance))
8600 return -ENODEV;
8601
8602 mutex_lock(&instance->reset_mutex);
8603 error = megasas_register_aen(instance, aen.seq_num,
8604 aen.class_locale_word);
8605 mutex_unlock(&instance->reset_mutex);
8606 return error;
8607 }
8608
8609 /**
8610 * megasas_mgmt_ioctl - char node ioctl entry point
8611 * @file: char device file pointer
8612 * @cmd: ioctl command
8613 * @arg: ioctl command arguments address
8614 */
8615 static long
megasas_mgmt_ioctl(struct file * file,unsigned int cmd,unsigned long arg)8616 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
8617 {
8618 switch (cmd) {
8619 case MEGASAS_IOC_FIRMWARE:
8620 return megasas_mgmt_ioctl_fw(file, arg);
8621
8622 case MEGASAS_IOC_GET_AEN:
8623 return megasas_mgmt_ioctl_aen(file, arg);
8624 }
8625
8626 return -ENOTTY;
8627 }
8628
8629 #ifdef CONFIG_COMPAT
8630 static long
megasas_mgmt_compat_ioctl(struct file * file,unsigned int cmd,unsigned long arg)8631 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
8632 unsigned long arg)
8633 {
8634 switch (cmd) {
8635 case MEGASAS_IOC_FIRMWARE32:
8636 return megasas_mgmt_ioctl_fw(file, arg);
8637 case MEGASAS_IOC_GET_AEN:
8638 return megasas_mgmt_ioctl_aen(file, arg);
8639 }
8640
8641 return -ENOTTY;
8642 }
8643 #endif
8644
8645 /*
8646 * File operations structure for management interface
8647 */
8648 static const struct file_operations megasas_mgmt_fops = {
8649 .owner = THIS_MODULE,
8650 .open = megasas_mgmt_open,
8651 .fasync = megasas_mgmt_fasync,
8652 .unlocked_ioctl = megasas_mgmt_ioctl,
8653 .poll = megasas_mgmt_poll,
8654 #ifdef CONFIG_COMPAT
8655 .compat_ioctl = megasas_mgmt_compat_ioctl,
8656 #endif
8657 .llseek = noop_llseek,
8658 };
8659
8660 static SIMPLE_DEV_PM_OPS(megasas_pm_ops, megasas_suspend, megasas_resume);
8661
8662 /*
8663 * PCI hotplug support registration structure
8664 */
8665 static struct pci_driver megasas_pci_driver = {
8666
8667 .name = "megaraid_sas",
8668 .id_table = megasas_pci_table,
8669 .probe = megasas_probe_one,
8670 .remove = megasas_detach_one,
8671 .driver.pm = &megasas_pm_ops,
8672 .shutdown = megasas_shutdown,
8673 };
8674
8675 /*
8676 * Sysfs driver attributes
8677 */
version_show(struct device_driver * dd,char * buf)8678 static ssize_t version_show(struct device_driver *dd, char *buf)
8679 {
8680 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
8681 MEGASAS_VERSION);
8682 }
8683 static DRIVER_ATTR_RO(version);
8684
release_date_show(struct device_driver * dd,char * buf)8685 static ssize_t release_date_show(struct device_driver *dd, char *buf)
8686 {
8687 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
8688 MEGASAS_RELDATE);
8689 }
8690 static DRIVER_ATTR_RO(release_date);
8691
support_poll_for_event_show(struct device_driver * dd,char * buf)8692 static ssize_t support_poll_for_event_show(struct device_driver *dd, char *buf)
8693 {
8694 return sprintf(buf, "%u\n", support_poll_for_event);
8695 }
8696 static DRIVER_ATTR_RO(support_poll_for_event);
8697
support_device_change_show(struct device_driver * dd,char * buf)8698 static ssize_t support_device_change_show(struct device_driver *dd, char *buf)
8699 {
8700 return sprintf(buf, "%u\n", support_device_change);
8701 }
8702 static DRIVER_ATTR_RO(support_device_change);
8703
dbg_lvl_show(struct device_driver * dd,char * buf)8704 static ssize_t dbg_lvl_show(struct device_driver *dd, char *buf)
8705 {
8706 return sprintf(buf, "%u\n", megasas_dbg_lvl);
8707 }
8708
dbg_lvl_store(struct device_driver * dd,const char * buf,size_t count)8709 static ssize_t dbg_lvl_store(struct device_driver *dd, const char *buf,
8710 size_t count)
8711 {
8712 int retval = count;
8713
8714 if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) {
8715 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
8716 retval = -EINVAL;
8717 }
8718 return retval;
8719 }
8720 static DRIVER_ATTR_RW(dbg_lvl);
8721
8722 static ssize_t
support_nvme_encapsulation_show(struct device_driver * dd,char * buf)8723 support_nvme_encapsulation_show(struct device_driver *dd, char *buf)
8724 {
8725 return sprintf(buf, "%u\n", support_nvme_encapsulation);
8726 }
8727
8728 static DRIVER_ATTR_RO(support_nvme_encapsulation);
8729
8730 static ssize_t
support_pci_lane_margining_show(struct device_driver * dd,char * buf)8731 support_pci_lane_margining_show(struct device_driver *dd, char *buf)
8732 {
8733 return sprintf(buf, "%u\n", support_pci_lane_margining);
8734 }
8735
8736 static DRIVER_ATTR_RO(support_pci_lane_margining);
8737
megasas_remove_scsi_device(struct scsi_device * sdev)8738 static inline void megasas_remove_scsi_device(struct scsi_device *sdev)
8739 {
8740 sdev_printk(KERN_INFO, sdev, "SCSI device is removed\n");
8741 scsi_remove_device(sdev);
8742 scsi_device_put(sdev);
8743 }
8744
8745 /**
8746 * megasas_update_device_list - Update the PD and LD device list from FW
8747 * after an AEN event notification
8748 * @instance: Adapter soft state
8749 * @event_type: Indicates type of event (PD or LD event)
8750 *
8751 * @return: Success or failure
8752 *
8753 * Issue DCMDs to Firmware to update the internal device list in driver.
8754 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
8755 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
8756 */
8757 static
megasas_update_device_list(struct megasas_instance * instance,int event_type)8758 int megasas_update_device_list(struct megasas_instance *instance,
8759 int event_type)
8760 {
8761 int dcmd_ret;
8762
8763 if (instance->enable_fw_dev_list) {
8764 return megasas_host_device_list_query(instance, false);
8765 } else {
8766 if (event_type & SCAN_PD_CHANNEL) {
8767 dcmd_ret = megasas_get_pd_list(instance);
8768 if (dcmd_ret != DCMD_SUCCESS)
8769 return dcmd_ret;
8770 }
8771
8772 if (event_type & SCAN_VD_CHANNEL) {
8773 if (!instance->requestorId ||
8774 megasas_get_ld_vf_affiliation(instance, 0)) {
8775 return megasas_ld_list_query(instance,
8776 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST);
8777 }
8778 }
8779 }
8780 return DCMD_SUCCESS;
8781 }
8782
8783 /**
8784 * megasas_add_remove_devices - Add/remove devices to SCSI mid-layer
8785 * after an AEN event notification
8786 * @instance: Adapter soft state
8787 * @scan_type: Indicates type of devices (PD/LD) to add
8788 * @return void
8789 */
8790 static
megasas_add_remove_devices(struct megasas_instance * instance,int scan_type)8791 void megasas_add_remove_devices(struct megasas_instance *instance,
8792 int scan_type)
8793 {
8794 int i, j;
8795 u16 pd_index = 0;
8796 u16 ld_index = 0;
8797 u16 channel = 0, id = 0;
8798 struct Scsi_Host *host;
8799 struct scsi_device *sdev1;
8800 struct MR_HOST_DEVICE_LIST *targetid_list = NULL;
8801 struct MR_HOST_DEVICE_LIST_ENTRY *targetid_entry = NULL;
8802
8803 host = instance->host;
8804
8805 if (instance->enable_fw_dev_list) {
8806 targetid_list = instance->host_device_list_buf;
8807 for (i = 0; i < targetid_list->count; i++) {
8808 targetid_entry = &targetid_list->host_device_list[i];
8809 if (targetid_entry->flags.u.bits.is_sys_pd) {
8810 channel = le16_to_cpu(targetid_entry->target_id) /
8811 MEGASAS_MAX_DEV_PER_CHANNEL;
8812 id = le16_to_cpu(targetid_entry->target_id) %
8813 MEGASAS_MAX_DEV_PER_CHANNEL;
8814 } else {
8815 channel = MEGASAS_MAX_PD_CHANNELS +
8816 (le16_to_cpu(targetid_entry->target_id) /
8817 MEGASAS_MAX_DEV_PER_CHANNEL);
8818 id = le16_to_cpu(targetid_entry->target_id) %
8819 MEGASAS_MAX_DEV_PER_CHANNEL;
8820 }
8821 sdev1 = scsi_device_lookup(host, channel, id, 0);
8822 if (!sdev1) {
8823 scsi_add_device(host, channel, id, 0);
8824 } else {
8825 scsi_device_put(sdev1);
8826 }
8827 }
8828 }
8829
8830 if (scan_type & SCAN_PD_CHANNEL) {
8831 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
8832 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8833 pd_index = i * MEGASAS_MAX_DEV_PER_CHANNEL + j;
8834 sdev1 = scsi_device_lookup(host, i, j, 0);
8835 if (instance->pd_list[pd_index].driveState ==
8836 MR_PD_STATE_SYSTEM) {
8837 if (!sdev1)
8838 scsi_add_device(host, i, j, 0);
8839 else
8840 scsi_device_put(sdev1);
8841 } else {
8842 if (sdev1)
8843 megasas_remove_scsi_device(sdev1);
8844 }
8845 }
8846 }
8847 }
8848
8849 if (scan_type & SCAN_VD_CHANNEL) {
8850 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
8851 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8852 ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
8853 sdev1 = scsi_device_lookup(host,
8854 MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8855 if (instance->ld_ids[ld_index] != 0xff) {
8856 if (!sdev1)
8857 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8858 else
8859 scsi_device_put(sdev1);
8860 } else {
8861 if (sdev1)
8862 megasas_remove_scsi_device(sdev1);
8863 }
8864 }
8865 }
8866 }
8867
8868 }
8869
8870 static void
megasas_aen_polling(struct work_struct * work)8871 megasas_aen_polling(struct work_struct *work)
8872 {
8873 struct megasas_aen_event *ev =
8874 container_of(work, struct megasas_aen_event, hotplug_work.work);
8875 struct megasas_instance *instance = ev->instance;
8876 union megasas_evt_class_locale class_locale;
8877 int event_type = 0;
8878 u32 seq_num;
8879 u16 ld_target_id;
8880 int error;
8881 u8 dcmd_ret = DCMD_SUCCESS;
8882 struct scsi_device *sdev1;
8883
8884 if (!instance) {
8885 printk(KERN_ERR "invalid instance!\n");
8886 kfree(ev);
8887 return;
8888 }
8889
8890 /* Don't run the event workqueue thread if OCR is running */
8891 mutex_lock(&instance->reset_mutex);
8892
8893 instance->ev = NULL;
8894 if (instance->evt_detail) {
8895 megasas_decode_evt(instance);
8896
8897 switch (le32_to_cpu(instance->evt_detail->code)) {
8898
8899 case MR_EVT_PD_INSERTED:
8900 case MR_EVT_PD_REMOVED:
8901 event_type = SCAN_PD_CHANNEL;
8902 break;
8903
8904 case MR_EVT_LD_OFFLINE:
8905 case MR_EVT_LD_DELETED:
8906 ld_target_id = instance->evt_detail->args.ld.target_id;
8907 sdev1 = scsi_device_lookup(instance->host,
8908 MEGASAS_MAX_PD_CHANNELS +
8909 (ld_target_id / MEGASAS_MAX_DEV_PER_CHANNEL),
8910 (ld_target_id % MEGASAS_MAX_DEV_PER_CHANNEL),
8911 0);
8912 if (sdev1) {
8913 mutex_unlock(&instance->reset_mutex);
8914 megasas_remove_scsi_device(sdev1);
8915 mutex_lock(&instance->reset_mutex);
8916 }
8917
8918 event_type = SCAN_VD_CHANNEL;
8919 break;
8920 case MR_EVT_LD_CREATED:
8921 event_type = SCAN_VD_CHANNEL;
8922 break;
8923
8924 case MR_EVT_CFG_CLEARED:
8925 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
8926 case MR_EVT_FOREIGN_CFG_IMPORTED:
8927 case MR_EVT_LD_STATE_CHANGE:
8928 event_type = SCAN_PD_CHANNEL | SCAN_VD_CHANNEL;
8929 dev_info(&instance->pdev->dev, "scanning for scsi%d...\n",
8930 instance->host->host_no);
8931 break;
8932
8933 case MR_EVT_CTRL_PROP_CHANGED:
8934 dcmd_ret = megasas_get_ctrl_info(instance);
8935 if (dcmd_ret == DCMD_SUCCESS &&
8936 instance->snapdump_wait_time) {
8937 megasas_get_snapdump_properties(instance);
8938 dev_info(&instance->pdev->dev,
8939 "Snap dump wait time\t: %d\n",
8940 instance->snapdump_wait_time);
8941 }
8942 break;
8943 default:
8944 event_type = 0;
8945 break;
8946 }
8947 } else {
8948 dev_err(&instance->pdev->dev, "invalid evt_detail!\n");
8949 mutex_unlock(&instance->reset_mutex);
8950 kfree(ev);
8951 return;
8952 }
8953
8954 if (event_type)
8955 dcmd_ret = megasas_update_device_list(instance, event_type);
8956
8957 mutex_unlock(&instance->reset_mutex);
8958
8959 if (event_type && dcmd_ret == DCMD_SUCCESS)
8960 megasas_add_remove_devices(instance, event_type);
8961
8962 if (dcmd_ret == DCMD_SUCCESS)
8963 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
8964 else
8965 seq_num = instance->last_seq_num;
8966
8967 /* Register AEN with FW for latest sequence number plus 1 */
8968 class_locale.members.reserved = 0;
8969 class_locale.members.locale = MR_EVT_LOCALE_ALL;
8970 class_locale.members.class = MR_EVT_CLASS_DEBUG;
8971
8972 if (instance->aen_cmd != NULL) {
8973 kfree(ev);
8974 return;
8975 }
8976
8977 mutex_lock(&instance->reset_mutex);
8978 error = megasas_register_aen(instance, seq_num,
8979 class_locale.word);
8980 if (error)
8981 dev_err(&instance->pdev->dev,
8982 "register aen failed error %x\n", error);
8983
8984 mutex_unlock(&instance->reset_mutex);
8985 kfree(ev);
8986 }
8987
8988 /**
8989 * megasas_init - Driver load entry point
8990 */
megasas_init(void)8991 static int __init megasas_init(void)
8992 {
8993 int rval;
8994
8995 /*
8996 * Booted in kdump kernel, minimize memory footprints by
8997 * disabling few features
8998 */
8999 if (reset_devices) {
9000 msix_vectors = 1;
9001 rdpq_enable = 0;
9002 dual_qdepth_disable = 1;
9003 poll_queues = 0;
9004 }
9005
9006 /*
9007 * Announce driver version and other information
9008 */
9009 pr_info("megasas: %s\n", MEGASAS_VERSION);
9010
9011 megasas_dbg_lvl = 0;
9012 support_poll_for_event = 2;
9013 support_device_change = 1;
9014 support_nvme_encapsulation = true;
9015 support_pci_lane_margining = true;
9016
9017 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
9018
9019 /*
9020 * Register character device node
9021 */
9022 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
9023
9024 if (rval < 0) {
9025 printk(KERN_DEBUG "megasas: failed to open device node\n");
9026 return rval;
9027 }
9028
9029 megasas_mgmt_majorno = rval;
9030
9031 megasas_init_debugfs();
9032
9033 /*
9034 * Register ourselves as PCI hotplug module
9035 */
9036 rval = pci_register_driver(&megasas_pci_driver);
9037
9038 if (rval) {
9039 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n");
9040 goto err_pcidrv;
9041 }
9042
9043 if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
9044 (event_log_level > MFI_EVT_CLASS_DEAD)) {
9045 pr_warn("megaraid_sas: provided event log level is out of range, setting it to default 2(CLASS_CRITICAL), permissible range is: -2 to 4\n");
9046 event_log_level = MFI_EVT_CLASS_CRITICAL;
9047 }
9048
9049 rval = driver_create_file(&megasas_pci_driver.driver,
9050 &driver_attr_version);
9051 if (rval)
9052 goto err_dcf_attr_ver;
9053
9054 rval = driver_create_file(&megasas_pci_driver.driver,
9055 &driver_attr_release_date);
9056 if (rval)
9057 goto err_dcf_rel_date;
9058
9059 rval = driver_create_file(&megasas_pci_driver.driver,
9060 &driver_attr_support_poll_for_event);
9061 if (rval)
9062 goto err_dcf_support_poll_for_event;
9063
9064 rval = driver_create_file(&megasas_pci_driver.driver,
9065 &driver_attr_dbg_lvl);
9066 if (rval)
9067 goto err_dcf_dbg_lvl;
9068 rval = driver_create_file(&megasas_pci_driver.driver,
9069 &driver_attr_support_device_change);
9070 if (rval)
9071 goto err_dcf_support_device_change;
9072
9073 rval = driver_create_file(&megasas_pci_driver.driver,
9074 &driver_attr_support_nvme_encapsulation);
9075 if (rval)
9076 goto err_dcf_support_nvme_encapsulation;
9077
9078 rval = driver_create_file(&megasas_pci_driver.driver,
9079 &driver_attr_support_pci_lane_margining);
9080 if (rval)
9081 goto err_dcf_support_pci_lane_margining;
9082
9083 return rval;
9084
9085 err_dcf_support_pci_lane_margining:
9086 driver_remove_file(&megasas_pci_driver.driver,
9087 &driver_attr_support_nvme_encapsulation);
9088
9089 err_dcf_support_nvme_encapsulation:
9090 driver_remove_file(&megasas_pci_driver.driver,
9091 &driver_attr_support_device_change);
9092
9093 err_dcf_support_device_change:
9094 driver_remove_file(&megasas_pci_driver.driver,
9095 &driver_attr_dbg_lvl);
9096 err_dcf_dbg_lvl:
9097 driver_remove_file(&megasas_pci_driver.driver,
9098 &driver_attr_support_poll_for_event);
9099 err_dcf_support_poll_for_event:
9100 driver_remove_file(&megasas_pci_driver.driver,
9101 &driver_attr_release_date);
9102 err_dcf_rel_date:
9103 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
9104 err_dcf_attr_ver:
9105 pci_unregister_driver(&megasas_pci_driver);
9106 err_pcidrv:
9107 megasas_exit_debugfs();
9108 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
9109 return rval;
9110 }
9111
9112 /**
9113 * megasas_exit - Driver unload entry point
9114 */
megasas_exit(void)9115 static void __exit megasas_exit(void)
9116 {
9117 driver_remove_file(&megasas_pci_driver.driver,
9118 &driver_attr_dbg_lvl);
9119 driver_remove_file(&megasas_pci_driver.driver,
9120 &driver_attr_support_poll_for_event);
9121 driver_remove_file(&megasas_pci_driver.driver,
9122 &driver_attr_support_device_change);
9123 driver_remove_file(&megasas_pci_driver.driver,
9124 &driver_attr_release_date);
9125 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
9126 driver_remove_file(&megasas_pci_driver.driver,
9127 &driver_attr_support_nvme_encapsulation);
9128 driver_remove_file(&megasas_pci_driver.driver,
9129 &driver_attr_support_pci_lane_margining);
9130
9131 pci_unregister_driver(&megasas_pci_driver);
9132 megasas_exit_debugfs();
9133 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
9134 }
9135
9136 module_init(megasas_init);
9137 module_exit(megasas_exit);
9138