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
41 #include <scsi/scsi.h>
42 #include <scsi/scsi_cmnd.h>
43 #include <scsi/scsi_device.h>
44 #include <scsi/scsi_host.h>
45 #include <scsi/scsi_tcq.h>
46 #include <scsi/scsi_dbg.h>
47 #include "megaraid_sas_fusion.h"
48 #include "megaraid_sas.h"
49
50 /*
51 * Number of sectors per IO command
52 * Will be set in megasas_init_mfi if user does not provide
53 */
54 static unsigned int max_sectors;
55 module_param_named(max_sectors, max_sectors, int, 0444);
56 MODULE_PARM_DESC(max_sectors,
57 "Maximum number of sectors per IO command");
58
59 static int msix_disable;
60 module_param(msix_disable, int, 0444);
61 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0");
62
63 static unsigned int msix_vectors;
64 module_param(msix_vectors, int, 0444);
65 MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW");
66
67 static int allow_vf_ioctls;
68 module_param(allow_vf_ioctls, int, 0444);
69 MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0");
70
71 static unsigned int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH;
72 module_param(throttlequeuedepth, int, 0444);
73 MODULE_PARM_DESC(throttlequeuedepth,
74 "Adapter queue depth when throttled due to I/O timeout. Default: 16");
75
76 unsigned int resetwaittime = MEGASAS_RESET_WAIT_TIME;
77 module_param(resetwaittime, int, 0444);
78 MODULE_PARM_DESC(resetwaittime, "Wait time in (1-180s) after I/O timeout before resetting adapter. Default: 180s");
79
80 static int smp_affinity_enable = 1;
81 module_param(smp_affinity_enable, int, 0444);
82 MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disable Default: enable(1)");
83
84 static int rdpq_enable = 1;
85 module_param(rdpq_enable, int, 0444);
86 MODULE_PARM_DESC(rdpq_enable, "Allocate reply queue in chunks for large queue depth enable/disable Default: enable(1)");
87
88 unsigned int dual_qdepth_disable;
89 module_param(dual_qdepth_disable, int, 0444);
90 MODULE_PARM_DESC(dual_qdepth_disable, "Disable dual queue depth feature. Default: 0");
91
92 static unsigned int scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
93 module_param(scmd_timeout, int, 0444);
94 MODULE_PARM_DESC(scmd_timeout, "scsi command timeout (10-90s), default 90s. See megasas_reset_timer.");
95
96 int perf_mode = -1;
97 module_param(perf_mode, int, 0444);
98 MODULE_PARM_DESC(perf_mode, "Performance mode (only for Aero adapters), options:\n\t\t"
99 "0 - balanced: High iops and low latency queues are allocated &\n\t\t"
100 "interrupt coalescing is enabled only on high iops queues\n\t\t"
101 "1 - iops: High iops queues are not allocated &\n\t\t"
102 "interrupt coalescing is enabled on all queues\n\t\t"
103 "2 - latency: High iops queues are not allocated &\n\t\t"
104 "interrupt coalescing is disabled on all queues\n\t\t"
105 "default mode is 'balanced'"
106 );
107
108 int event_log_level = MFI_EVT_CLASS_CRITICAL;
109 module_param(event_log_level, int, 0644);
110 MODULE_PARM_DESC(event_log_level, "Asynchronous event logging level- range is: -2(CLASS_DEBUG) to 4(CLASS_DEAD), Default: 2(CLASS_CRITICAL)");
111
112 unsigned int enable_sdev_max_qd;
113 module_param(enable_sdev_max_qd, int, 0444);
114 MODULE_PARM_DESC(enable_sdev_max_qd, "Enable sdev max qd as can_queue. Default: 0");
115
116 MODULE_LICENSE("GPL");
117 MODULE_VERSION(MEGASAS_VERSION);
118 MODULE_AUTHOR("megaraidlinux.pdl@broadcom.com");
119 MODULE_DESCRIPTION("Broadcom MegaRAID SAS Driver");
120
121 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
122 static int megasas_get_pd_list(struct megasas_instance *instance);
123 static int megasas_ld_list_query(struct megasas_instance *instance,
124 u8 query_type);
125 static int megasas_issue_init_mfi(struct megasas_instance *instance);
126 static int megasas_register_aen(struct megasas_instance *instance,
127 u32 seq_num, u32 class_locale_word);
128 static void megasas_get_pd_info(struct megasas_instance *instance,
129 struct scsi_device *sdev);
130 static void
131 megasas_set_ld_removed_by_fw(struct megasas_instance *instance);
132
133 /*
134 * PCI ID table for all supported controllers
135 */
136 static struct pci_device_id megasas_pci_table[] = {
137
138 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
139 /* xscale IOP */
140 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
141 /* ppc IOP */
142 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
143 /* ppc IOP */
144 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
145 /* gen2*/
146 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
147 /* gen2*/
148 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
149 /* skinny*/
150 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
151 /* skinny*/
152 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
153 /* xscale IOP, vega */
154 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
155 /* xscale IOP */
156 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
157 /* Fusion */
158 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)},
159 /* Plasma */
160 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
161 /* Invader */
162 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
163 /* Fury */
164 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER)},
165 /* Intruder */
166 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER_24)},
167 /* Intruder 24 port*/
168 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_52)},
169 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_53)},
170 /* VENTURA */
171 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA)},
172 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER)},
173 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_HARPOON)},
174 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_TOMCAT)},
175 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA_4PORT)},
176 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER_4PORT)},
177 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E1)},
178 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E2)},
179 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E5)},
180 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E6)},
181 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E0)},
182 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E3)},
183 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E4)},
184 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E7)},
185 {}
186 };
187
188 MODULE_DEVICE_TABLE(pci, megasas_pci_table);
189
190 static int megasas_mgmt_majorno;
191 struct megasas_mgmt_info megasas_mgmt_info;
192 static struct fasync_struct *megasas_async_queue;
193 static DEFINE_MUTEX(megasas_async_queue_mutex);
194
195 static int megasas_poll_wait_aen;
196 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
197 static u32 support_poll_for_event;
198 u32 megasas_dbg_lvl;
199 static u32 support_device_change;
200 static bool support_nvme_encapsulation;
201 static bool support_pci_lane_margining;
202
203 /* define lock for aen poll */
204 static spinlock_t poll_aen_lock;
205
206 extern struct dentry *megasas_debugfs_root;
207
208 void
209 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
210 u8 alt_status);
211 static u32
212 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance);
213 static int
214 megasas_adp_reset_gen2(struct megasas_instance *instance,
215 struct megasas_register_set __iomem *reg_set);
216 static irqreturn_t megasas_isr(int irq, void *devp);
217 static u32
218 megasas_init_adapter_mfi(struct megasas_instance *instance);
219 u32
220 megasas_build_and_issue_cmd(struct megasas_instance *instance,
221 struct scsi_cmnd *scmd);
222 static void megasas_complete_cmd_dpc(unsigned long instance_addr);
223 int
224 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
225 int seconds);
226 void megasas_fusion_ocr_wq(struct work_struct *work);
227 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
228 int initial);
229 static int
230 megasas_set_dma_mask(struct megasas_instance *instance);
231 static int
232 megasas_alloc_ctrl_mem(struct megasas_instance *instance);
233 static inline void
234 megasas_free_ctrl_mem(struct megasas_instance *instance);
235 static inline int
236 megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance);
237 static inline void
238 megasas_free_ctrl_dma_buffers(struct megasas_instance *instance);
239 static inline void
240 megasas_init_ctrl_params(struct megasas_instance *instance);
241
megasas_readl(struct megasas_instance * instance,const volatile void __iomem * addr)242 u32 megasas_readl(struct megasas_instance *instance,
243 const volatile void __iomem *addr)
244 {
245 u32 i = 0, ret_val;
246 /*
247 * Due to a HW errata in Aero controllers, reads to certain
248 * Fusion registers could intermittently return all zeroes.
249 * This behavior is transient in nature and subsequent reads will
250 * return valid value. As a workaround in driver, retry readl for
251 * upto three times until a non-zero value is read.
252 */
253 if (instance->adapter_type == AERO_SERIES) {
254 do {
255 ret_val = readl(addr);
256 i++;
257 } while (ret_val == 0 && i < 3);
258 return ret_val;
259 } else {
260 return readl(addr);
261 }
262 }
263
264 /**
265 * megasas_set_dma_settings - Populate DMA address, length and flags for DCMDs
266 * @instance: Adapter soft state
267 * @dcmd: DCMD frame inside MFI command
268 * @dma_addr: DMA address of buffer to be passed to FW
269 * @dma_len: Length of DMA buffer to be passed to FW
270 * @return: void
271 */
megasas_set_dma_settings(struct megasas_instance * instance,struct megasas_dcmd_frame * dcmd,dma_addr_t dma_addr,u32 dma_len)272 void megasas_set_dma_settings(struct megasas_instance *instance,
273 struct megasas_dcmd_frame *dcmd,
274 dma_addr_t dma_addr, u32 dma_len)
275 {
276 if (instance->consistent_mask_64bit) {
277 dcmd->sgl.sge64[0].phys_addr = cpu_to_le64(dma_addr);
278 dcmd->sgl.sge64[0].length = cpu_to_le32(dma_len);
279 dcmd->flags = cpu_to_le16(dcmd->flags | MFI_FRAME_SGL64);
280
281 } else {
282 dcmd->sgl.sge32[0].phys_addr =
283 cpu_to_le32(lower_32_bits(dma_addr));
284 dcmd->sgl.sge32[0].length = cpu_to_le32(dma_len);
285 dcmd->flags = cpu_to_le16(dcmd->flags);
286 }
287 }
288
289 static void
megasas_issue_dcmd(struct megasas_instance * instance,struct megasas_cmd * cmd)290 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
291 {
292 instance->instancet->fire_cmd(instance,
293 cmd->frame_phys_addr, 0, instance->reg_set);
294 return;
295 }
296
297 /**
298 * megasas_get_cmd - Get a command from the free pool
299 * @instance: Adapter soft state
300 *
301 * Returns a free command from the pool
302 */
megasas_get_cmd(struct megasas_instance * instance)303 struct megasas_cmd *megasas_get_cmd(struct megasas_instance
304 *instance)
305 {
306 unsigned long flags;
307 struct megasas_cmd *cmd = NULL;
308
309 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
310
311 if (!list_empty(&instance->cmd_pool)) {
312 cmd = list_entry((&instance->cmd_pool)->next,
313 struct megasas_cmd, list);
314 list_del_init(&cmd->list);
315 } else {
316 dev_err(&instance->pdev->dev, "Command pool empty!\n");
317 }
318
319 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
320 return cmd;
321 }
322
323 /**
324 * megasas_return_cmd - Return a cmd to free command pool
325 * @instance: Adapter soft state
326 * @cmd: Command packet to be returned to free command pool
327 */
328 void
megasas_return_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd)329 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
330 {
331 unsigned long flags;
332 u32 blk_tags;
333 struct megasas_cmd_fusion *cmd_fusion;
334 struct fusion_context *fusion = instance->ctrl_context;
335
336 /* This flag is used only for fusion adapter.
337 * Wait for Interrupt for Polled mode DCMD
338 */
339 if (cmd->flags & DRV_DCMD_POLLED_MODE)
340 return;
341
342 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
343
344 if (fusion) {
345 blk_tags = instance->max_scsi_cmds + cmd->index;
346 cmd_fusion = fusion->cmd_list[blk_tags];
347 megasas_return_cmd_fusion(instance, cmd_fusion);
348 }
349 cmd->scmd = NULL;
350 cmd->frame_count = 0;
351 cmd->flags = 0;
352 memset(cmd->frame, 0, instance->mfi_frame_size);
353 cmd->frame->io.context = cpu_to_le32(cmd->index);
354 if (!fusion && reset_devices)
355 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
356 list_add(&cmd->list, (&instance->cmd_pool)->next);
357
358 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
359
360 }
361
362 static const char *
format_timestamp(uint32_t timestamp)363 format_timestamp(uint32_t timestamp)
364 {
365 static char buffer[32];
366
367 if ((timestamp & 0xff000000) == 0xff000000)
368 snprintf(buffer, sizeof(buffer), "boot + %us", timestamp &
369 0x00ffffff);
370 else
371 snprintf(buffer, sizeof(buffer), "%us", timestamp);
372 return buffer;
373 }
374
375 static const char *
format_class(int8_t class)376 format_class(int8_t class)
377 {
378 static char buffer[6];
379
380 switch (class) {
381 case MFI_EVT_CLASS_DEBUG:
382 return "debug";
383 case MFI_EVT_CLASS_PROGRESS:
384 return "progress";
385 case MFI_EVT_CLASS_INFO:
386 return "info";
387 case MFI_EVT_CLASS_WARNING:
388 return "WARN";
389 case MFI_EVT_CLASS_CRITICAL:
390 return "CRIT";
391 case MFI_EVT_CLASS_FATAL:
392 return "FATAL";
393 case MFI_EVT_CLASS_DEAD:
394 return "DEAD";
395 default:
396 snprintf(buffer, sizeof(buffer), "%d", class);
397 return buffer;
398 }
399 }
400
401 /**
402 * megasas_decode_evt: Decode FW AEN event and print critical event
403 * for information.
404 * @instance: Adapter soft state
405 */
406 static void
megasas_decode_evt(struct megasas_instance * instance)407 megasas_decode_evt(struct megasas_instance *instance)
408 {
409 struct megasas_evt_detail *evt_detail = instance->evt_detail;
410 union megasas_evt_class_locale class_locale;
411 class_locale.word = le32_to_cpu(evt_detail->cl.word);
412
413 if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
414 (event_log_level > MFI_EVT_CLASS_DEAD)) {
415 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");
416 event_log_level = MFI_EVT_CLASS_CRITICAL;
417 }
418
419 if (class_locale.members.class >= event_log_level)
420 dev_info(&instance->pdev->dev, "%d (%s/0x%04x/%s) - %s\n",
421 le32_to_cpu(evt_detail->seq_num),
422 format_timestamp(le32_to_cpu(evt_detail->time_stamp)),
423 (class_locale.members.locale),
424 format_class(class_locale.members.class),
425 evt_detail->description);
426
427 if (megasas_dbg_lvl & LD_PD_DEBUG)
428 dev_info(&instance->pdev->dev,
429 "evt_detail.args.ld.target_id/index %d/%d\n",
430 evt_detail->args.ld.target_id, evt_detail->args.ld.ld_index);
431
432 }
433
434 /*
435 * The following functions are defined for xscale
436 * (deviceid : 1064R, PERC5) controllers
437 */
438
439 /**
440 * megasas_enable_intr_xscale - Enables interrupts
441 * @instance: Adapter soft state
442 */
443 static inline void
megasas_enable_intr_xscale(struct megasas_instance * instance)444 megasas_enable_intr_xscale(struct megasas_instance *instance)
445 {
446 struct megasas_register_set __iomem *regs;
447
448 regs = instance->reg_set;
449 writel(0, &(regs)->outbound_intr_mask);
450
451 /* Dummy readl to force pci flush */
452 readl(®s->outbound_intr_mask);
453 }
454
455 /**
456 * megasas_disable_intr_xscale -Disables interrupt
457 * @instance: Adapter soft state
458 */
459 static inline void
megasas_disable_intr_xscale(struct megasas_instance * instance)460 megasas_disable_intr_xscale(struct megasas_instance *instance)
461 {
462 struct megasas_register_set __iomem *regs;
463 u32 mask = 0x1f;
464
465 regs = instance->reg_set;
466 writel(mask, ®s->outbound_intr_mask);
467 /* Dummy readl to force pci flush */
468 readl(®s->outbound_intr_mask);
469 }
470
471 /**
472 * megasas_read_fw_status_reg_xscale - returns the current FW status value
473 * @instance: Adapter soft state
474 */
475 static u32
megasas_read_fw_status_reg_xscale(struct megasas_instance * instance)476 megasas_read_fw_status_reg_xscale(struct megasas_instance *instance)
477 {
478 return readl(&instance->reg_set->outbound_msg_0);
479 }
480 /**
481 * megasas_clear_interrupt_xscale - Check & clear interrupt
482 * @instance: Adapter soft state
483 */
484 static int
megasas_clear_intr_xscale(struct megasas_instance * instance)485 megasas_clear_intr_xscale(struct megasas_instance *instance)
486 {
487 u32 status;
488 u32 mfiStatus = 0;
489 struct megasas_register_set __iomem *regs;
490 regs = instance->reg_set;
491
492 /*
493 * Check if it is our interrupt
494 */
495 status = readl(®s->outbound_intr_status);
496
497 if (status & MFI_OB_INTR_STATUS_MASK)
498 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
499 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
500 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
501
502 /*
503 * Clear the interrupt by writing back the same value
504 */
505 if (mfiStatus)
506 writel(status, ®s->outbound_intr_status);
507
508 /* Dummy readl to force pci flush */
509 readl(®s->outbound_intr_status);
510
511 return mfiStatus;
512 }
513
514 /**
515 * megasas_fire_cmd_xscale - Sends command to the FW
516 * @instance: Adapter soft state
517 * @frame_phys_addr : Physical address of cmd
518 * @frame_count : Number of frames for the command
519 * @regs : MFI register set
520 */
521 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)522 megasas_fire_cmd_xscale(struct megasas_instance *instance,
523 dma_addr_t frame_phys_addr,
524 u32 frame_count,
525 struct megasas_register_set __iomem *regs)
526 {
527 unsigned long flags;
528
529 spin_lock_irqsave(&instance->hba_lock, flags);
530 writel((frame_phys_addr >> 3)|(frame_count),
531 &(regs)->inbound_queue_port);
532 spin_unlock_irqrestore(&instance->hba_lock, flags);
533 }
534
535 /**
536 * megasas_adp_reset_xscale - For controller reset
537 * @instance: Adapter soft state
538 * @regs: MFI register set
539 */
540 static int
megasas_adp_reset_xscale(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)541 megasas_adp_reset_xscale(struct megasas_instance *instance,
542 struct megasas_register_set __iomem *regs)
543 {
544 u32 i;
545 u32 pcidata;
546
547 writel(MFI_ADP_RESET, ®s->inbound_doorbell);
548
549 for (i = 0; i < 3; i++)
550 msleep(1000); /* sleep for 3 secs */
551 pcidata = 0;
552 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
553 dev_notice(&instance->pdev->dev, "pcidata = %x\n", pcidata);
554 if (pcidata & 0x2) {
555 dev_notice(&instance->pdev->dev, "mfi 1068 offset read=%x\n", pcidata);
556 pcidata &= ~0x2;
557 pci_write_config_dword(instance->pdev,
558 MFI_1068_PCSR_OFFSET, pcidata);
559
560 for (i = 0; i < 2; i++)
561 msleep(1000); /* need to wait 2 secs again */
562
563 pcidata = 0;
564 pci_read_config_dword(instance->pdev,
565 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
566 dev_notice(&instance->pdev->dev, "1068 offset handshake read=%x\n", pcidata);
567 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
568 dev_notice(&instance->pdev->dev, "1068 offset pcidt=%x\n", pcidata);
569 pcidata = 0;
570 pci_write_config_dword(instance->pdev,
571 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
572 }
573 }
574 return 0;
575 }
576
577 /**
578 * megasas_check_reset_xscale - For controller reset check
579 * @instance: Adapter soft state
580 * @regs: MFI register set
581 */
582 static int
megasas_check_reset_xscale(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)583 megasas_check_reset_xscale(struct megasas_instance *instance,
584 struct megasas_register_set __iomem *regs)
585 {
586 if ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
587 (le32_to_cpu(*instance->consumer) ==
588 MEGASAS_ADPRESET_INPROG_SIGN))
589 return 1;
590 return 0;
591 }
592
593 static struct megasas_instance_template megasas_instance_template_xscale = {
594
595 .fire_cmd = megasas_fire_cmd_xscale,
596 .enable_intr = megasas_enable_intr_xscale,
597 .disable_intr = megasas_disable_intr_xscale,
598 .clear_intr = megasas_clear_intr_xscale,
599 .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
600 .adp_reset = megasas_adp_reset_xscale,
601 .check_reset = megasas_check_reset_xscale,
602 .service_isr = megasas_isr,
603 .tasklet = megasas_complete_cmd_dpc,
604 .init_adapter = megasas_init_adapter_mfi,
605 .build_and_issue_cmd = megasas_build_and_issue_cmd,
606 .issue_dcmd = megasas_issue_dcmd,
607 };
608
609 /*
610 * This is the end of set of functions & definitions specific
611 * to xscale (deviceid : 1064R, PERC5) controllers
612 */
613
614 /*
615 * The following functions are defined for ppc (deviceid : 0x60)
616 * controllers
617 */
618
619 /**
620 * megasas_enable_intr_ppc - Enables interrupts
621 * @instance: Adapter soft state
622 */
623 static inline void
megasas_enable_intr_ppc(struct megasas_instance * instance)624 megasas_enable_intr_ppc(struct megasas_instance *instance)
625 {
626 struct megasas_register_set __iomem *regs;
627
628 regs = instance->reg_set;
629 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
630
631 writel(~0x80000000, &(regs)->outbound_intr_mask);
632
633 /* Dummy readl to force pci flush */
634 readl(®s->outbound_intr_mask);
635 }
636
637 /**
638 * megasas_disable_intr_ppc - Disable interrupt
639 * @instance: Adapter soft state
640 */
641 static inline void
megasas_disable_intr_ppc(struct megasas_instance * instance)642 megasas_disable_intr_ppc(struct megasas_instance *instance)
643 {
644 struct megasas_register_set __iomem *regs;
645 u32 mask = 0xFFFFFFFF;
646
647 regs = instance->reg_set;
648 writel(mask, ®s->outbound_intr_mask);
649 /* Dummy readl to force pci flush */
650 readl(®s->outbound_intr_mask);
651 }
652
653 /**
654 * megasas_read_fw_status_reg_ppc - returns the current FW status value
655 * @instance: Adapter soft state
656 */
657 static u32
megasas_read_fw_status_reg_ppc(struct megasas_instance * instance)658 megasas_read_fw_status_reg_ppc(struct megasas_instance *instance)
659 {
660 return readl(&instance->reg_set->outbound_scratch_pad_0);
661 }
662
663 /**
664 * megasas_clear_interrupt_ppc - Check & clear interrupt
665 * @instance: Adapter soft state
666 */
667 static int
megasas_clear_intr_ppc(struct megasas_instance * instance)668 megasas_clear_intr_ppc(struct megasas_instance *instance)
669 {
670 u32 status, mfiStatus = 0;
671 struct megasas_register_set __iomem *regs;
672 regs = instance->reg_set;
673
674 /*
675 * Check if it is our interrupt
676 */
677 status = readl(®s->outbound_intr_status);
678
679 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
680 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
681
682 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
683 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
684
685 /*
686 * Clear the interrupt by writing back the same value
687 */
688 writel(status, ®s->outbound_doorbell_clear);
689
690 /* Dummy readl to force pci flush */
691 readl(®s->outbound_doorbell_clear);
692
693 return mfiStatus;
694 }
695
696 /**
697 * megasas_fire_cmd_ppc - Sends command to the FW
698 * @instance: Adapter soft state
699 * @frame_phys_addr: Physical address of cmd
700 * @frame_count: Number of frames for the command
701 * @regs: MFI register set
702 */
703 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)704 megasas_fire_cmd_ppc(struct megasas_instance *instance,
705 dma_addr_t frame_phys_addr,
706 u32 frame_count,
707 struct megasas_register_set __iomem *regs)
708 {
709 unsigned long flags;
710
711 spin_lock_irqsave(&instance->hba_lock, flags);
712 writel((frame_phys_addr | (frame_count<<1))|1,
713 &(regs)->inbound_queue_port);
714 spin_unlock_irqrestore(&instance->hba_lock, flags);
715 }
716
717 /**
718 * megasas_check_reset_ppc - For controller reset check
719 * @instance: Adapter soft state
720 * @regs: MFI register set
721 */
722 static int
megasas_check_reset_ppc(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)723 megasas_check_reset_ppc(struct megasas_instance *instance,
724 struct megasas_register_set __iomem *regs)
725 {
726 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
727 return 1;
728
729 return 0;
730 }
731
732 static struct megasas_instance_template megasas_instance_template_ppc = {
733
734 .fire_cmd = megasas_fire_cmd_ppc,
735 .enable_intr = megasas_enable_intr_ppc,
736 .disable_intr = megasas_disable_intr_ppc,
737 .clear_intr = megasas_clear_intr_ppc,
738 .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
739 .adp_reset = megasas_adp_reset_xscale,
740 .check_reset = megasas_check_reset_ppc,
741 .service_isr = megasas_isr,
742 .tasklet = megasas_complete_cmd_dpc,
743 .init_adapter = megasas_init_adapter_mfi,
744 .build_and_issue_cmd = megasas_build_and_issue_cmd,
745 .issue_dcmd = megasas_issue_dcmd,
746 };
747
748 /**
749 * megasas_enable_intr_skinny - Enables interrupts
750 * @instance: Adapter soft state
751 */
752 static inline void
megasas_enable_intr_skinny(struct megasas_instance * instance)753 megasas_enable_intr_skinny(struct megasas_instance *instance)
754 {
755 struct megasas_register_set __iomem *regs;
756
757 regs = instance->reg_set;
758 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
759
760 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
761
762 /* Dummy readl to force pci flush */
763 readl(®s->outbound_intr_mask);
764 }
765
766 /**
767 * megasas_disable_intr_skinny - Disables interrupt
768 * @instance: Adapter soft state
769 */
770 static inline void
megasas_disable_intr_skinny(struct megasas_instance * instance)771 megasas_disable_intr_skinny(struct megasas_instance *instance)
772 {
773 struct megasas_register_set __iomem *regs;
774 u32 mask = 0xFFFFFFFF;
775
776 regs = instance->reg_set;
777 writel(mask, ®s->outbound_intr_mask);
778 /* Dummy readl to force pci flush */
779 readl(®s->outbound_intr_mask);
780 }
781
782 /**
783 * megasas_read_fw_status_reg_skinny - returns the current FW status value
784 * @instance: Adapter soft state
785 */
786 static u32
megasas_read_fw_status_reg_skinny(struct megasas_instance * instance)787 megasas_read_fw_status_reg_skinny(struct megasas_instance *instance)
788 {
789 return readl(&instance->reg_set->outbound_scratch_pad_0);
790 }
791
792 /**
793 * megasas_clear_interrupt_skinny - Check & clear interrupt
794 * @instance: Adapter soft state
795 */
796 static int
megasas_clear_intr_skinny(struct megasas_instance * instance)797 megasas_clear_intr_skinny(struct megasas_instance *instance)
798 {
799 u32 status;
800 u32 mfiStatus = 0;
801 struct megasas_register_set __iomem *regs;
802 regs = instance->reg_set;
803
804 /*
805 * Check if it is our interrupt
806 */
807 status = readl(®s->outbound_intr_status);
808
809 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
810 return 0;
811 }
812
813 /*
814 * Check if it is our interrupt
815 */
816 if ((megasas_read_fw_status_reg_skinny(instance) & MFI_STATE_MASK) ==
817 MFI_STATE_FAULT) {
818 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
819 } else
820 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
821
822 /*
823 * Clear the interrupt by writing back the same value
824 */
825 writel(status, ®s->outbound_intr_status);
826
827 /*
828 * dummy read to flush PCI
829 */
830 readl(®s->outbound_intr_status);
831
832 return mfiStatus;
833 }
834
835 /**
836 * megasas_fire_cmd_skinny - Sends command to the FW
837 * @instance: Adapter soft state
838 * @frame_phys_addr: Physical address of cmd
839 * @frame_count: Number of frames for the command
840 * @regs: MFI register set
841 */
842 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)843 megasas_fire_cmd_skinny(struct megasas_instance *instance,
844 dma_addr_t frame_phys_addr,
845 u32 frame_count,
846 struct megasas_register_set __iomem *regs)
847 {
848 unsigned long flags;
849
850 spin_lock_irqsave(&instance->hba_lock, flags);
851 writel(upper_32_bits(frame_phys_addr),
852 &(regs)->inbound_high_queue_port);
853 writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
854 &(regs)->inbound_low_queue_port);
855 spin_unlock_irqrestore(&instance->hba_lock, flags);
856 }
857
858 /**
859 * megasas_check_reset_skinny - For controller reset check
860 * @instance: Adapter soft state
861 * @regs: MFI register set
862 */
863 static int
megasas_check_reset_skinny(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)864 megasas_check_reset_skinny(struct megasas_instance *instance,
865 struct megasas_register_set __iomem *regs)
866 {
867 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
868 return 1;
869
870 return 0;
871 }
872
873 static struct megasas_instance_template megasas_instance_template_skinny = {
874
875 .fire_cmd = megasas_fire_cmd_skinny,
876 .enable_intr = megasas_enable_intr_skinny,
877 .disable_intr = megasas_disable_intr_skinny,
878 .clear_intr = megasas_clear_intr_skinny,
879 .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
880 .adp_reset = megasas_adp_reset_gen2,
881 .check_reset = megasas_check_reset_skinny,
882 .service_isr = megasas_isr,
883 .tasklet = megasas_complete_cmd_dpc,
884 .init_adapter = megasas_init_adapter_mfi,
885 .build_and_issue_cmd = megasas_build_and_issue_cmd,
886 .issue_dcmd = megasas_issue_dcmd,
887 };
888
889
890 /*
891 * The following functions are defined for gen2 (deviceid : 0x78 0x79)
892 * controllers
893 */
894
895 /**
896 * megasas_enable_intr_gen2 - Enables interrupts
897 * @instance: Adapter soft state
898 */
899 static inline void
megasas_enable_intr_gen2(struct megasas_instance * instance)900 megasas_enable_intr_gen2(struct megasas_instance *instance)
901 {
902 struct megasas_register_set __iomem *regs;
903
904 regs = instance->reg_set;
905 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
906
907 /* write ~0x00000005 (4 & 1) to the intr mask*/
908 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
909
910 /* Dummy readl to force pci flush */
911 readl(®s->outbound_intr_mask);
912 }
913
914 /**
915 * megasas_disable_intr_gen2 - Disables interrupt
916 * @instance: Adapter soft state
917 */
918 static inline void
megasas_disable_intr_gen2(struct megasas_instance * instance)919 megasas_disable_intr_gen2(struct megasas_instance *instance)
920 {
921 struct megasas_register_set __iomem *regs;
922 u32 mask = 0xFFFFFFFF;
923
924 regs = instance->reg_set;
925 writel(mask, ®s->outbound_intr_mask);
926 /* Dummy readl to force pci flush */
927 readl(®s->outbound_intr_mask);
928 }
929
930 /**
931 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
932 * @instance: Adapter soft state
933 */
934 static u32
megasas_read_fw_status_reg_gen2(struct megasas_instance * instance)935 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance)
936 {
937 return readl(&instance->reg_set->outbound_scratch_pad_0);
938 }
939
940 /**
941 * megasas_clear_interrupt_gen2 - Check & clear interrupt
942 * @instance: Adapter soft state
943 */
944 static int
megasas_clear_intr_gen2(struct megasas_instance * instance)945 megasas_clear_intr_gen2(struct megasas_instance *instance)
946 {
947 u32 status;
948 u32 mfiStatus = 0;
949 struct megasas_register_set __iomem *regs;
950 regs = instance->reg_set;
951
952 /*
953 * Check if it is our interrupt
954 */
955 status = readl(®s->outbound_intr_status);
956
957 if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
958 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
959 }
960 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
961 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
962 }
963
964 /*
965 * Clear the interrupt by writing back the same value
966 */
967 if (mfiStatus)
968 writel(status, ®s->outbound_doorbell_clear);
969
970 /* Dummy readl to force pci flush */
971 readl(®s->outbound_intr_status);
972
973 return mfiStatus;
974 }
975
976 /**
977 * megasas_fire_cmd_gen2 - Sends command to the FW
978 * @instance: Adapter soft state
979 * @frame_phys_addr: Physical address of cmd
980 * @frame_count: Number of frames for the command
981 * @regs: MFI register set
982 */
983 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)984 megasas_fire_cmd_gen2(struct megasas_instance *instance,
985 dma_addr_t frame_phys_addr,
986 u32 frame_count,
987 struct megasas_register_set __iomem *regs)
988 {
989 unsigned long flags;
990
991 spin_lock_irqsave(&instance->hba_lock, flags);
992 writel((frame_phys_addr | (frame_count<<1))|1,
993 &(regs)->inbound_queue_port);
994 spin_unlock_irqrestore(&instance->hba_lock, flags);
995 }
996
997 /**
998 * megasas_adp_reset_gen2 - For controller reset
999 * @instance: Adapter soft state
1000 * @reg_set: MFI register set
1001 */
1002 static int
megasas_adp_reset_gen2(struct megasas_instance * instance,struct megasas_register_set __iomem * reg_set)1003 megasas_adp_reset_gen2(struct megasas_instance *instance,
1004 struct megasas_register_set __iomem *reg_set)
1005 {
1006 u32 retry = 0 ;
1007 u32 HostDiag;
1008 u32 __iomem *seq_offset = ®_set->seq_offset;
1009 u32 __iomem *hostdiag_offset = ®_set->host_diag;
1010
1011 if (instance->instancet == &megasas_instance_template_skinny) {
1012 seq_offset = ®_set->fusion_seq_offset;
1013 hostdiag_offset = ®_set->fusion_host_diag;
1014 }
1015
1016 writel(0, seq_offset);
1017 writel(4, seq_offset);
1018 writel(0xb, seq_offset);
1019 writel(2, seq_offset);
1020 writel(7, seq_offset);
1021 writel(0xd, seq_offset);
1022
1023 msleep(1000);
1024
1025 HostDiag = (u32)readl(hostdiag_offset);
1026
1027 while (!(HostDiag & DIAG_WRITE_ENABLE)) {
1028 msleep(100);
1029 HostDiag = (u32)readl(hostdiag_offset);
1030 dev_notice(&instance->pdev->dev, "RESETGEN2: retry=%x, hostdiag=%x\n",
1031 retry, HostDiag);
1032
1033 if (retry++ >= 100)
1034 return 1;
1035
1036 }
1037
1038 dev_notice(&instance->pdev->dev, "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
1039
1040 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
1041
1042 ssleep(10);
1043
1044 HostDiag = (u32)readl(hostdiag_offset);
1045 while (HostDiag & DIAG_RESET_ADAPTER) {
1046 msleep(100);
1047 HostDiag = (u32)readl(hostdiag_offset);
1048 dev_notice(&instance->pdev->dev, "RESET_GEN2: retry=%x, hostdiag=%x\n",
1049 retry, HostDiag);
1050
1051 if (retry++ >= 1000)
1052 return 1;
1053
1054 }
1055 return 0;
1056 }
1057
1058 /**
1059 * megasas_check_reset_gen2 - For controller reset check
1060 * @instance: Adapter soft state
1061 * @regs: MFI register set
1062 */
1063 static int
megasas_check_reset_gen2(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)1064 megasas_check_reset_gen2(struct megasas_instance *instance,
1065 struct megasas_register_set __iomem *regs)
1066 {
1067 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1068 return 1;
1069
1070 return 0;
1071 }
1072
1073 static struct megasas_instance_template megasas_instance_template_gen2 = {
1074
1075 .fire_cmd = megasas_fire_cmd_gen2,
1076 .enable_intr = megasas_enable_intr_gen2,
1077 .disable_intr = megasas_disable_intr_gen2,
1078 .clear_intr = megasas_clear_intr_gen2,
1079 .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
1080 .adp_reset = megasas_adp_reset_gen2,
1081 .check_reset = megasas_check_reset_gen2,
1082 .service_isr = megasas_isr,
1083 .tasklet = megasas_complete_cmd_dpc,
1084 .init_adapter = megasas_init_adapter_mfi,
1085 .build_and_issue_cmd = megasas_build_and_issue_cmd,
1086 .issue_dcmd = megasas_issue_dcmd,
1087 };
1088
1089 /*
1090 * This is the end of set of functions & definitions
1091 * specific to gen2 (deviceid : 0x78, 0x79) controllers
1092 */
1093
1094 /*
1095 * Template added for TB (Fusion)
1096 */
1097 extern struct megasas_instance_template megasas_instance_template_fusion;
1098
1099 /**
1100 * megasas_issue_polled - Issues a polling command
1101 * @instance: Adapter soft state
1102 * @cmd: Command packet to be issued
1103 *
1104 * For polling, MFI requires the cmd_status to be set to MFI_STAT_INVALID_STATUS before posting.
1105 */
1106 int
megasas_issue_polled(struct megasas_instance * instance,struct megasas_cmd * cmd)1107 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
1108 {
1109 struct megasas_header *frame_hdr = &cmd->frame->hdr;
1110
1111 frame_hdr->cmd_status = MFI_STAT_INVALID_STATUS;
1112 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
1113
1114 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1115 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1116 __func__, __LINE__);
1117 return DCMD_INIT;
1118 }
1119
1120 instance->instancet->issue_dcmd(instance, cmd);
1121
1122 return wait_and_poll(instance, cmd, instance->requestorId ?
1123 MEGASAS_ROUTINE_WAIT_TIME_VF : MFI_IO_TIMEOUT_SECS);
1124 }
1125
1126 /**
1127 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds
1128 * @instance: Adapter soft state
1129 * @cmd: Command to be issued
1130 * @timeout: Timeout in seconds
1131 *
1132 * This function waits on an event for the command to be returned from ISR.
1133 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1134 * Used to issue ioctl commands.
1135 */
1136 int
megasas_issue_blocked_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd,int timeout)1137 megasas_issue_blocked_cmd(struct megasas_instance *instance,
1138 struct megasas_cmd *cmd, int timeout)
1139 {
1140 int ret = 0;
1141 cmd->cmd_status_drv = DCMD_INIT;
1142
1143 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1144 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1145 __func__, __LINE__);
1146 return DCMD_INIT;
1147 }
1148
1149 instance->instancet->issue_dcmd(instance, cmd);
1150
1151 if (timeout) {
1152 ret = wait_event_timeout(instance->int_cmd_wait_q,
1153 cmd->cmd_status_drv != DCMD_INIT, timeout * HZ);
1154 if (!ret) {
1155 dev_err(&instance->pdev->dev,
1156 "DCMD(opcode: 0x%x) is timed out, func:%s\n",
1157 cmd->frame->dcmd.opcode, __func__);
1158 return DCMD_TIMEOUT;
1159 }
1160 } else
1161 wait_event(instance->int_cmd_wait_q,
1162 cmd->cmd_status_drv != DCMD_INIT);
1163
1164 return cmd->cmd_status_drv;
1165 }
1166
1167 /**
1168 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd
1169 * @instance: Adapter soft state
1170 * @cmd_to_abort: Previously issued cmd to be aborted
1171 * @timeout: Timeout in seconds
1172 *
1173 * MFI firmware can abort previously issued AEN comamnd (automatic event
1174 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
1175 * cmd and waits for return status.
1176 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1177 */
1178 static int
megasas_issue_blocked_abort_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd_to_abort,int timeout)1179 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
1180 struct megasas_cmd *cmd_to_abort, int timeout)
1181 {
1182 struct megasas_cmd *cmd;
1183 struct megasas_abort_frame *abort_fr;
1184 int ret = 0;
1185 u32 opcode;
1186
1187 cmd = megasas_get_cmd(instance);
1188
1189 if (!cmd)
1190 return -1;
1191
1192 abort_fr = &cmd->frame->abort;
1193
1194 /*
1195 * Prepare and issue the abort frame
1196 */
1197 abort_fr->cmd = MFI_CMD_ABORT;
1198 abort_fr->cmd_status = MFI_STAT_INVALID_STATUS;
1199 abort_fr->flags = cpu_to_le16(0);
1200 abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
1201 abort_fr->abort_mfi_phys_addr_lo =
1202 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
1203 abort_fr->abort_mfi_phys_addr_hi =
1204 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
1205
1206 cmd->sync_cmd = 1;
1207 cmd->cmd_status_drv = DCMD_INIT;
1208
1209 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1210 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1211 __func__, __LINE__);
1212 return DCMD_INIT;
1213 }
1214
1215 instance->instancet->issue_dcmd(instance, cmd);
1216
1217 if (timeout) {
1218 ret = wait_event_timeout(instance->abort_cmd_wait_q,
1219 cmd->cmd_status_drv != DCMD_INIT, timeout * HZ);
1220 if (!ret) {
1221 opcode = cmd_to_abort->frame->dcmd.opcode;
1222 dev_err(&instance->pdev->dev,
1223 "Abort(to be aborted DCMD opcode: 0x%x) is timed out func:%s\n",
1224 opcode, __func__);
1225 return DCMD_TIMEOUT;
1226 }
1227 } else
1228 wait_event(instance->abort_cmd_wait_q,
1229 cmd->cmd_status_drv != DCMD_INIT);
1230
1231 cmd->sync_cmd = 0;
1232
1233 megasas_return_cmd(instance, cmd);
1234 return cmd->cmd_status_drv;
1235 }
1236
1237 /**
1238 * megasas_make_sgl32 - Prepares 32-bit SGL
1239 * @instance: Adapter soft state
1240 * @scp: SCSI command from the mid-layer
1241 * @mfi_sgl: SGL to be filled in
1242 *
1243 * If successful, this function returns the number of SG elements. Otherwise,
1244 * it returnes -1.
1245 */
1246 static int
megasas_make_sgl32(struct megasas_instance * instance,struct scsi_cmnd * scp,union megasas_sgl * mfi_sgl)1247 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
1248 union megasas_sgl *mfi_sgl)
1249 {
1250 int i;
1251 int sge_count;
1252 struct scatterlist *os_sgl;
1253
1254 sge_count = scsi_dma_map(scp);
1255 BUG_ON(sge_count < 0);
1256
1257 if (sge_count) {
1258 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1259 mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1260 mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
1261 }
1262 }
1263 return sge_count;
1264 }
1265
1266 /**
1267 * megasas_make_sgl64 - Prepares 64-bit SGL
1268 * @instance: Adapter soft state
1269 * @scp: SCSI command from the mid-layer
1270 * @mfi_sgl: SGL to be filled in
1271 *
1272 * If successful, this function returns the number of SG elements. Otherwise,
1273 * it returnes -1.
1274 */
1275 static int
megasas_make_sgl64(struct megasas_instance * instance,struct scsi_cmnd * scp,union megasas_sgl * mfi_sgl)1276 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1277 union megasas_sgl *mfi_sgl)
1278 {
1279 int i;
1280 int sge_count;
1281 struct scatterlist *os_sgl;
1282
1283 sge_count = scsi_dma_map(scp);
1284 BUG_ON(sge_count < 0);
1285
1286 if (sge_count) {
1287 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1288 mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1289 mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
1290 }
1291 }
1292 return sge_count;
1293 }
1294
1295 /**
1296 * megasas_make_sgl_skinny - Prepares IEEE SGL
1297 * @instance: Adapter soft state
1298 * @scp: SCSI command from the mid-layer
1299 * @mfi_sgl: SGL to be filled in
1300 *
1301 * If successful, this function returns the number of SG elements. Otherwise,
1302 * it returnes -1.
1303 */
1304 static int
megasas_make_sgl_skinny(struct megasas_instance * instance,struct scsi_cmnd * scp,union megasas_sgl * mfi_sgl)1305 megasas_make_sgl_skinny(struct megasas_instance *instance,
1306 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1307 {
1308 int i;
1309 int sge_count;
1310 struct scatterlist *os_sgl;
1311
1312 sge_count = scsi_dma_map(scp);
1313
1314 if (sge_count) {
1315 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1316 mfi_sgl->sge_skinny[i].length =
1317 cpu_to_le32(sg_dma_len(os_sgl));
1318 mfi_sgl->sge_skinny[i].phys_addr =
1319 cpu_to_le64(sg_dma_address(os_sgl));
1320 mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
1321 }
1322 }
1323 return sge_count;
1324 }
1325
1326 /**
1327 * megasas_get_frame_count - Computes the number of frames
1328 * @frame_type : type of frame- io or pthru frame
1329 * @sge_count : number of sg elements
1330 *
1331 * Returns the number of frames required for numnber of sge's (sge_count)
1332 */
1333
megasas_get_frame_count(struct megasas_instance * instance,u8 sge_count,u8 frame_type)1334 static u32 megasas_get_frame_count(struct megasas_instance *instance,
1335 u8 sge_count, u8 frame_type)
1336 {
1337 int num_cnt;
1338 int sge_bytes;
1339 u32 sge_sz;
1340 u32 frame_count = 0;
1341
1342 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1343 sizeof(struct megasas_sge32);
1344
1345 if (instance->flag_ieee) {
1346 sge_sz = sizeof(struct megasas_sge_skinny);
1347 }
1348
1349 /*
1350 * Main frame can contain 2 SGEs for 64-bit SGLs and
1351 * 3 SGEs for 32-bit SGLs for ldio &
1352 * 1 SGEs for 64-bit SGLs and
1353 * 2 SGEs for 32-bit SGLs for pthru frame
1354 */
1355 if (unlikely(frame_type == PTHRU_FRAME)) {
1356 if (instance->flag_ieee == 1) {
1357 num_cnt = sge_count - 1;
1358 } else if (IS_DMA64)
1359 num_cnt = sge_count - 1;
1360 else
1361 num_cnt = sge_count - 2;
1362 } else {
1363 if (instance->flag_ieee == 1) {
1364 num_cnt = sge_count - 1;
1365 } else if (IS_DMA64)
1366 num_cnt = sge_count - 2;
1367 else
1368 num_cnt = sge_count - 3;
1369 }
1370
1371 if (num_cnt > 0) {
1372 sge_bytes = sge_sz * num_cnt;
1373
1374 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1375 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1376 }
1377 /* Main frame */
1378 frame_count += 1;
1379
1380 if (frame_count > 7)
1381 frame_count = 8;
1382 return frame_count;
1383 }
1384
1385 /**
1386 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1387 * @instance: Adapter soft state
1388 * @scp: SCSI command
1389 * @cmd: Command to be prepared in
1390 *
1391 * This function prepares CDB commands. These are typcially pass-through
1392 * commands to the devices.
1393 */
1394 static int
megasas_build_dcdb(struct megasas_instance * instance,struct scsi_cmnd * scp,struct megasas_cmd * cmd)1395 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1396 struct megasas_cmd *cmd)
1397 {
1398 u32 is_logical;
1399 u32 device_id;
1400 u16 flags = 0;
1401 struct megasas_pthru_frame *pthru;
1402
1403 is_logical = MEGASAS_IS_LOGICAL(scp->device);
1404 device_id = MEGASAS_DEV_INDEX(scp);
1405 pthru = (struct megasas_pthru_frame *)cmd->frame;
1406
1407 if (scp->sc_data_direction == DMA_TO_DEVICE)
1408 flags = MFI_FRAME_DIR_WRITE;
1409 else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1410 flags = MFI_FRAME_DIR_READ;
1411 else if (scp->sc_data_direction == DMA_NONE)
1412 flags = MFI_FRAME_DIR_NONE;
1413
1414 if (instance->flag_ieee == 1) {
1415 flags |= MFI_FRAME_IEEE;
1416 }
1417
1418 /*
1419 * Prepare the DCDB frame
1420 */
1421 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1422 pthru->cmd_status = 0x0;
1423 pthru->scsi_status = 0x0;
1424 pthru->target_id = device_id;
1425 pthru->lun = scp->device->lun;
1426 pthru->cdb_len = scp->cmd_len;
1427 pthru->timeout = 0;
1428 pthru->pad_0 = 0;
1429 pthru->flags = cpu_to_le16(flags);
1430 pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
1431
1432 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1433
1434 /*
1435 * If the command is for the tape device, set the
1436 * pthru timeout to the os layer timeout value.
1437 */
1438 if (scp->device->type == TYPE_TAPE) {
1439 if ((scp->request->timeout / HZ) > 0xFFFF)
1440 pthru->timeout = cpu_to_le16(0xFFFF);
1441 else
1442 pthru->timeout = cpu_to_le16(scp->request->timeout / HZ);
1443 }
1444
1445 /*
1446 * Construct SGL
1447 */
1448 if (instance->flag_ieee == 1) {
1449 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1450 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1451 &pthru->sgl);
1452 } else if (IS_DMA64) {
1453 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1454 pthru->sge_count = megasas_make_sgl64(instance, scp,
1455 &pthru->sgl);
1456 } else
1457 pthru->sge_count = megasas_make_sgl32(instance, scp,
1458 &pthru->sgl);
1459
1460 if (pthru->sge_count > instance->max_num_sge) {
1461 dev_err(&instance->pdev->dev, "DCDB too many SGE NUM=%x\n",
1462 pthru->sge_count);
1463 return 0;
1464 }
1465
1466 /*
1467 * Sense info specific
1468 */
1469 pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1470 pthru->sense_buf_phys_addr_hi =
1471 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
1472 pthru->sense_buf_phys_addr_lo =
1473 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
1474
1475 /*
1476 * Compute the total number of frames this command consumes. FW uses
1477 * this number to pull sufficient number of frames from host memory.
1478 */
1479 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1480 PTHRU_FRAME);
1481
1482 return cmd->frame_count;
1483 }
1484
1485 /**
1486 * megasas_build_ldio - Prepares IOs to logical devices
1487 * @instance: Adapter soft state
1488 * @scp: SCSI command
1489 * @cmd: Command to be prepared
1490 *
1491 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1492 */
1493 static int
megasas_build_ldio(struct megasas_instance * instance,struct scsi_cmnd * scp,struct megasas_cmd * cmd)1494 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1495 struct megasas_cmd *cmd)
1496 {
1497 u32 device_id;
1498 u8 sc = scp->cmnd[0];
1499 u16 flags = 0;
1500 struct megasas_io_frame *ldio;
1501
1502 device_id = MEGASAS_DEV_INDEX(scp);
1503 ldio = (struct megasas_io_frame *)cmd->frame;
1504
1505 if (scp->sc_data_direction == DMA_TO_DEVICE)
1506 flags = MFI_FRAME_DIR_WRITE;
1507 else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1508 flags = MFI_FRAME_DIR_READ;
1509
1510 if (instance->flag_ieee == 1) {
1511 flags |= MFI_FRAME_IEEE;
1512 }
1513
1514 /*
1515 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1516 */
1517 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1518 ldio->cmd_status = 0x0;
1519 ldio->scsi_status = 0x0;
1520 ldio->target_id = device_id;
1521 ldio->timeout = 0;
1522 ldio->reserved_0 = 0;
1523 ldio->pad_0 = 0;
1524 ldio->flags = cpu_to_le16(flags);
1525 ldio->start_lba_hi = 0;
1526 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1527
1528 /*
1529 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1530 */
1531 if (scp->cmd_len == 6) {
1532 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
1533 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
1534 ((u32) scp->cmnd[2] << 8) |
1535 (u32) scp->cmnd[3]);
1536
1537 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
1538 }
1539
1540 /*
1541 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1542 */
1543 else if (scp->cmd_len == 10) {
1544 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
1545 ((u32) scp->cmnd[7] << 8));
1546 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1547 ((u32) scp->cmnd[3] << 16) |
1548 ((u32) scp->cmnd[4] << 8) |
1549 (u32) scp->cmnd[5]);
1550 }
1551
1552 /*
1553 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1554 */
1555 else if (scp->cmd_len == 12) {
1556 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1557 ((u32) scp->cmnd[7] << 16) |
1558 ((u32) scp->cmnd[8] << 8) |
1559 (u32) scp->cmnd[9]);
1560
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 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1569 */
1570 else if (scp->cmd_len == 16) {
1571 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
1572 ((u32) scp->cmnd[11] << 16) |
1573 ((u32) scp->cmnd[12] << 8) |
1574 (u32) scp->cmnd[13]);
1575
1576 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1577 ((u32) scp->cmnd[7] << 16) |
1578 ((u32) scp->cmnd[8] << 8) |
1579 (u32) scp->cmnd[9]);
1580
1581 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1582 ((u32) scp->cmnd[3] << 16) |
1583 ((u32) scp->cmnd[4] << 8) |
1584 (u32) scp->cmnd[5]);
1585
1586 }
1587
1588 /*
1589 * Construct SGL
1590 */
1591 if (instance->flag_ieee) {
1592 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1593 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1594 &ldio->sgl);
1595 } else if (IS_DMA64) {
1596 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1597 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1598 } else
1599 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1600
1601 if (ldio->sge_count > instance->max_num_sge) {
1602 dev_err(&instance->pdev->dev, "build_ld_io: sge_count = %x\n",
1603 ldio->sge_count);
1604 return 0;
1605 }
1606
1607 /*
1608 * Sense info specific
1609 */
1610 ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1611 ldio->sense_buf_phys_addr_hi = 0;
1612 ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
1613
1614 /*
1615 * Compute the total number of frames this command consumes. FW uses
1616 * this number to pull sufficient number of frames from host memory.
1617 */
1618 cmd->frame_count = megasas_get_frame_count(instance,
1619 ldio->sge_count, IO_FRAME);
1620
1621 return cmd->frame_count;
1622 }
1623
1624 /**
1625 * megasas_cmd_type - Checks if the cmd is for logical drive/sysPD
1626 * and whether it's RW or non RW
1627 * @cmd: SCSI command
1628 *
1629 */
megasas_cmd_type(struct scsi_cmnd * cmd)1630 inline int megasas_cmd_type(struct scsi_cmnd *cmd)
1631 {
1632 int ret;
1633
1634 switch (cmd->cmnd[0]) {
1635 case READ_10:
1636 case WRITE_10:
1637 case READ_12:
1638 case WRITE_12:
1639 case READ_6:
1640 case WRITE_6:
1641 case READ_16:
1642 case WRITE_16:
1643 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1644 READ_WRITE_LDIO : READ_WRITE_SYSPDIO;
1645 break;
1646 default:
1647 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1648 NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO;
1649 }
1650 return ret;
1651 }
1652
1653 /**
1654 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds
1655 * in FW
1656 * @instance: Adapter soft state
1657 */
1658 static inline void
megasas_dump_pending_frames(struct megasas_instance * instance)1659 megasas_dump_pending_frames(struct megasas_instance *instance)
1660 {
1661 struct megasas_cmd *cmd;
1662 int i,n;
1663 union megasas_sgl *mfi_sgl;
1664 struct megasas_io_frame *ldio;
1665 struct megasas_pthru_frame *pthru;
1666 u32 sgcount;
1667 u16 max_cmd = instance->max_fw_cmds;
1668
1669 dev_err(&instance->pdev->dev, "[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1670 dev_err(&instance->pdev->dev, "[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1671 if (IS_DMA64)
1672 dev_err(&instance->pdev->dev, "[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1673 else
1674 dev_err(&instance->pdev->dev, "[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1675
1676 dev_err(&instance->pdev->dev, "[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1677 for (i = 0; i < max_cmd; i++) {
1678 cmd = instance->cmd_list[i];
1679 if (!cmd->scmd)
1680 continue;
1681 dev_err(&instance->pdev->dev, "[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1682 if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) {
1683 ldio = (struct megasas_io_frame *)cmd->frame;
1684 mfi_sgl = &ldio->sgl;
1685 sgcount = ldio->sge_count;
1686 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1687 " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1688 instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
1689 le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
1690 le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
1691 } else {
1692 pthru = (struct megasas_pthru_frame *) cmd->frame;
1693 mfi_sgl = &pthru->sgl;
1694 sgcount = pthru->sge_count;
1695 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1696 "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1697 instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
1698 pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
1699 le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
1700 }
1701 if (megasas_dbg_lvl & MEGASAS_DBG_LVL) {
1702 for (n = 0; n < sgcount; n++) {
1703 if (IS_DMA64)
1704 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%llx\n",
1705 le32_to_cpu(mfi_sgl->sge64[n].length),
1706 le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
1707 else
1708 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%x\n",
1709 le32_to_cpu(mfi_sgl->sge32[n].length),
1710 le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
1711 }
1712 }
1713 } /*for max_cmd*/
1714 dev_err(&instance->pdev->dev, "[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1715 for (i = 0; i < max_cmd; i++) {
1716
1717 cmd = instance->cmd_list[i];
1718
1719 if (cmd->sync_cmd == 1)
1720 dev_err(&instance->pdev->dev, "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1721 }
1722 dev_err(&instance->pdev->dev, "[%d]: Dumping Done\n\n",instance->host->host_no);
1723 }
1724
1725 u32
megasas_build_and_issue_cmd(struct megasas_instance * instance,struct scsi_cmnd * scmd)1726 megasas_build_and_issue_cmd(struct megasas_instance *instance,
1727 struct scsi_cmnd *scmd)
1728 {
1729 struct megasas_cmd *cmd;
1730 u32 frame_count;
1731
1732 cmd = megasas_get_cmd(instance);
1733 if (!cmd)
1734 return SCSI_MLQUEUE_HOST_BUSY;
1735
1736 /*
1737 * Logical drive command
1738 */
1739 if (megasas_cmd_type(scmd) == READ_WRITE_LDIO)
1740 frame_count = megasas_build_ldio(instance, scmd, cmd);
1741 else
1742 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1743
1744 if (!frame_count)
1745 goto out_return_cmd;
1746
1747 cmd->scmd = scmd;
1748 scmd->SCp.ptr = (char *)cmd;
1749
1750 /*
1751 * Issue the command to the FW
1752 */
1753 atomic_inc(&instance->fw_outstanding);
1754
1755 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1756 cmd->frame_count-1, instance->reg_set);
1757
1758 return 0;
1759 out_return_cmd:
1760 megasas_return_cmd(instance, cmd);
1761 return SCSI_MLQUEUE_HOST_BUSY;
1762 }
1763
1764
1765 /**
1766 * megasas_queue_command - Queue entry point
1767 * @shost: adapter SCSI host
1768 * @scmd: SCSI command to be queued
1769 */
1770 static int
megasas_queue_command(struct Scsi_Host * shost,struct scsi_cmnd * scmd)1771 megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
1772 {
1773 struct megasas_instance *instance;
1774 struct MR_PRIV_DEVICE *mr_device_priv_data;
1775 u32 ld_tgt_id;
1776
1777 instance = (struct megasas_instance *)
1778 scmd->device->host->hostdata;
1779
1780 if (instance->unload == 1) {
1781 scmd->result = DID_NO_CONNECT << 16;
1782 scmd->scsi_done(scmd);
1783 return 0;
1784 }
1785
1786 if (instance->issuepend_done == 0)
1787 return SCSI_MLQUEUE_HOST_BUSY;
1788
1789
1790 /* Check for an mpio path and adjust behavior */
1791 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
1792 if (megasas_check_mpio_paths(instance, scmd) ==
1793 (DID_REQUEUE << 16)) {
1794 return SCSI_MLQUEUE_HOST_BUSY;
1795 } else {
1796 scmd->result = DID_NO_CONNECT << 16;
1797 scmd->scsi_done(scmd);
1798 return 0;
1799 }
1800 }
1801
1802 mr_device_priv_data = scmd->device->hostdata;
1803 if (!mr_device_priv_data ||
1804 (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)) {
1805 scmd->result = DID_NO_CONNECT << 16;
1806 scmd->scsi_done(scmd);
1807 return 0;
1808 }
1809
1810 if (MEGASAS_IS_LOGICAL(scmd->device)) {
1811 ld_tgt_id = MEGASAS_TARGET_ID(scmd->device);
1812 if (instance->ld_tgtid_status[ld_tgt_id] == LD_TARGET_ID_DELETED) {
1813 scmd->result = DID_NO_CONNECT << 16;
1814 scmd->scsi_done(scmd);
1815 return 0;
1816 }
1817 }
1818
1819 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1820 return SCSI_MLQUEUE_HOST_BUSY;
1821
1822 if (mr_device_priv_data->tm_busy)
1823 return SCSI_MLQUEUE_DEVICE_BUSY;
1824
1825
1826 scmd->result = 0;
1827
1828 if (MEGASAS_IS_LOGICAL(scmd->device) &&
1829 (scmd->device->id >= instance->fw_supported_vd_count ||
1830 scmd->device->lun)) {
1831 scmd->result = DID_BAD_TARGET << 16;
1832 goto out_done;
1833 }
1834
1835 if ((scmd->cmnd[0] == SYNCHRONIZE_CACHE) &&
1836 MEGASAS_IS_LOGICAL(scmd->device) &&
1837 (!instance->fw_sync_cache_support)) {
1838 scmd->result = DID_OK << 16;
1839 goto out_done;
1840 }
1841
1842 return instance->instancet->build_and_issue_cmd(instance, scmd);
1843
1844 out_done:
1845 scmd->scsi_done(scmd);
1846 return 0;
1847 }
1848
megasas_lookup_instance(u16 host_no)1849 static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1850 {
1851 int i;
1852
1853 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1854
1855 if ((megasas_mgmt_info.instance[i]) &&
1856 (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1857 return megasas_mgmt_info.instance[i];
1858 }
1859
1860 return NULL;
1861 }
1862
1863 /*
1864 * megasas_set_dynamic_target_properties -
1865 * Device property set by driver may not be static and it is required to be
1866 * updated after OCR
1867 *
1868 * set tm_capable.
1869 * set dma alignment (only for eedp protection enable vd).
1870 *
1871 * @sdev: OS provided scsi device
1872 *
1873 * Returns void
1874 */
megasas_set_dynamic_target_properties(struct scsi_device * sdev,bool is_target_prop)1875 void megasas_set_dynamic_target_properties(struct scsi_device *sdev,
1876 bool is_target_prop)
1877 {
1878 u16 pd_index = 0, ld;
1879 u32 device_id;
1880 struct megasas_instance *instance;
1881 struct fusion_context *fusion;
1882 struct MR_PRIV_DEVICE *mr_device_priv_data;
1883 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1884 struct MR_LD_RAID *raid;
1885 struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1886
1887 instance = megasas_lookup_instance(sdev->host->host_no);
1888 fusion = instance->ctrl_context;
1889 mr_device_priv_data = sdev->hostdata;
1890
1891 if (!fusion || !mr_device_priv_data)
1892 return;
1893
1894 if (MEGASAS_IS_LOGICAL(sdev)) {
1895 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
1896 + sdev->id;
1897 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1898 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
1899 if (ld >= instance->fw_supported_vd_count)
1900 return;
1901 raid = MR_LdRaidGet(ld, local_map_ptr);
1902
1903 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER)
1904 blk_queue_update_dma_alignment(sdev->request_queue, 0x7);
1905
1906 mr_device_priv_data->is_tm_capable =
1907 raid->capability.tmCapable;
1908
1909 if (!raid->flags.isEPD)
1910 sdev->no_write_same = 1;
1911
1912 } else if (instance->use_seqnum_jbod_fp) {
1913 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1914 sdev->id;
1915 pd_sync = (void *)fusion->pd_seq_sync
1916 [(instance->pd_seq_map_id - 1) & 1];
1917 mr_device_priv_data->is_tm_capable =
1918 pd_sync->seq[pd_index].capability.tmCapable;
1919 }
1920
1921 if (is_target_prop && instance->tgt_prop->reset_tmo) {
1922 /*
1923 * If FW provides a target reset timeout value, driver will use
1924 * it. If not set, fallback to default values.
1925 */
1926 mr_device_priv_data->target_reset_tmo =
1927 min_t(u8, instance->max_reset_tmo,
1928 instance->tgt_prop->reset_tmo);
1929 mr_device_priv_data->task_abort_tmo = instance->task_abort_tmo;
1930 } else {
1931 mr_device_priv_data->target_reset_tmo =
1932 MEGASAS_DEFAULT_TM_TIMEOUT;
1933 mr_device_priv_data->task_abort_tmo =
1934 MEGASAS_DEFAULT_TM_TIMEOUT;
1935 }
1936 }
1937
1938 /*
1939 * megasas_set_nvme_device_properties -
1940 * set nomerges=2
1941 * set virtual page boundary = 4K (current mr_nvme_pg_size is 4K).
1942 * set maximum io transfer = MDTS of NVME device provided by MR firmware.
1943 *
1944 * MR firmware provides value in KB. Caller of this function converts
1945 * kb into bytes.
1946 *
1947 * e.a MDTS=5 means 2^5 * nvme page size. (In case of 4K page size,
1948 * MR firmware provides value 128 as (32 * 4K) = 128K.
1949 *
1950 * @sdev: scsi device
1951 * @max_io_size: maximum io transfer size
1952 *
1953 */
1954 static inline void
megasas_set_nvme_device_properties(struct scsi_device * sdev,u32 max_io_size)1955 megasas_set_nvme_device_properties(struct scsi_device *sdev, u32 max_io_size)
1956 {
1957 struct megasas_instance *instance;
1958 u32 mr_nvme_pg_size;
1959
1960 instance = (struct megasas_instance *)sdev->host->hostdata;
1961 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
1962 MR_DEFAULT_NVME_PAGE_SIZE);
1963
1964 blk_queue_max_hw_sectors(sdev->request_queue, (max_io_size / 512));
1965
1966 blk_queue_flag_set(QUEUE_FLAG_NOMERGES, sdev->request_queue);
1967 blk_queue_virt_boundary(sdev->request_queue, mr_nvme_pg_size - 1);
1968 }
1969
1970 /*
1971 * megasas_set_fw_assisted_qd -
1972 * set device queue depth to can_queue
1973 * set device queue depth to fw assisted qd
1974 *
1975 * @sdev: scsi device
1976 * @is_target_prop true, if fw provided target properties.
1977 */
megasas_set_fw_assisted_qd(struct scsi_device * sdev,bool is_target_prop)1978 static void megasas_set_fw_assisted_qd(struct scsi_device *sdev,
1979 bool is_target_prop)
1980 {
1981 u8 interface_type;
1982 u32 device_qd = MEGASAS_DEFAULT_CMD_PER_LUN;
1983 u32 tgt_device_qd;
1984 struct megasas_instance *instance;
1985 struct MR_PRIV_DEVICE *mr_device_priv_data;
1986
1987 instance = megasas_lookup_instance(sdev->host->host_no);
1988 mr_device_priv_data = sdev->hostdata;
1989 interface_type = mr_device_priv_data->interface_type;
1990
1991 switch (interface_type) {
1992 case SAS_PD:
1993 device_qd = MEGASAS_SAS_QD;
1994 break;
1995 case SATA_PD:
1996 device_qd = MEGASAS_SATA_QD;
1997 break;
1998 case NVME_PD:
1999 device_qd = MEGASAS_NVME_QD;
2000 break;
2001 }
2002
2003 if (is_target_prop) {
2004 tgt_device_qd = le32_to_cpu(instance->tgt_prop->device_qdepth);
2005 if (tgt_device_qd)
2006 device_qd = min(instance->host->can_queue,
2007 (int)tgt_device_qd);
2008 }
2009
2010 if (instance->enable_sdev_max_qd && interface_type != UNKNOWN_DRIVE)
2011 device_qd = instance->host->can_queue;
2012
2013 scsi_change_queue_depth(sdev, device_qd);
2014 }
2015
2016 /*
2017 * megasas_set_static_target_properties -
2018 * Device property set by driver are static and it is not required to be
2019 * updated after OCR.
2020 *
2021 * set io timeout
2022 * set device queue depth
2023 * set nvme device properties. see - megasas_set_nvme_device_properties
2024 *
2025 * @sdev: scsi device
2026 * @is_target_prop true, if fw provided target properties.
2027 */
megasas_set_static_target_properties(struct scsi_device * sdev,bool is_target_prop)2028 static void megasas_set_static_target_properties(struct scsi_device *sdev,
2029 bool is_target_prop)
2030 {
2031 u32 max_io_size_kb = MR_DEFAULT_NVME_MDTS_KB;
2032 struct megasas_instance *instance;
2033
2034 instance = megasas_lookup_instance(sdev->host->host_no);
2035
2036 /*
2037 * The RAID firmware may require extended timeouts.
2038 */
2039 blk_queue_rq_timeout(sdev->request_queue, scmd_timeout * HZ);
2040
2041 /* max_io_size_kb will be set to non zero for
2042 * nvme based vd and syspd.
2043 */
2044 if (is_target_prop)
2045 max_io_size_kb = le32_to_cpu(instance->tgt_prop->max_io_size_kb);
2046
2047 if (instance->nvme_page_size && max_io_size_kb)
2048 megasas_set_nvme_device_properties(sdev, (max_io_size_kb << 10));
2049
2050 megasas_set_fw_assisted_qd(sdev, is_target_prop);
2051 }
2052
2053
megasas_slave_configure(struct scsi_device * sdev)2054 static int megasas_slave_configure(struct scsi_device *sdev)
2055 {
2056 u16 pd_index = 0;
2057 struct megasas_instance *instance;
2058 int ret_target_prop = DCMD_FAILED;
2059 bool is_target_prop = false;
2060
2061 instance = megasas_lookup_instance(sdev->host->host_no);
2062 if (instance->pd_list_not_supported) {
2063 if (!MEGASAS_IS_LOGICAL(sdev) && sdev->type == TYPE_DISK) {
2064 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2065 sdev->id;
2066 if (instance->pd_list[pd_index].driveState !=
2067 MR_PD_STATE_SYSTEM)
2068 return -ENXIO;
2069 }
2070 }
2071
2072 mutex_lock(&instance->reset_mutex);
2073 /* Send DCMD to Firmware and cache the information */
2074 if ((instance->pd_info) && !MEGASAS_IS_LOGICAL(sdev))
2075 megasas_get_pd_info(instance, sdev);
2076
2077 /* Some ventura firmware may not have instance->nvme_page_size set.
2078 * Do not send MR_DCMD_DRV_GET_TARGET_PROP
2079 */
2080 if ((instance->tgt_prop) && (instance->nvme_page_size))
2081 ret_target_prop = megasas_get_target_prop(instance, sdev);
2082
2083 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
2084 megasas_set_static_target_properties(sdev, is_target_prop);
2085
2086 /* This sdev property may change post OCR */
2087 megasas_set_dynamic_target_properties(sdev, is_target_prop);
2088
2089 mutex_unlock(&instance->reset_mutex);
2090
2091 return 0;
2092 }
2093
megasas_slave_alloc(struct scsi_device * sdev)2094 static int megasas_slave_alloc(struct scsi_device *sdev)
2095 {
2096 u16 pd_index = 0, ld_tgt_id;
2097 struct megasas_instance *instance ;
2098 struct MR_PRIV_DEVICE *mr_device_priv_data;
2099
2100 instance = megasas_lookup_instance(sdev->host->host_no);
2101 if (!MEGASAS_IS_LOGICAL(sdev)) {
2102 /*
2103 * Open the OS scan to the SYSTEM PD
2104 */
2105 pd_index =
2106 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2107 sdev->id;
2108 if ((instance->pd_list_not_supported ||
2109 instance->pd_list[pd_index].driveState ==
2110 MR_PD_STATE_SYSTEM)) {
2111 goto scan_target;
2112 }
2113 return -ENXIO;
2114 } else if (!MEGASAS_IS_LUN_VALID(sdev)) {
2115 sdev_printk(KERN_INFO, sdev, "%s: invalid LUN\n", __func__);
2116 return -ENXIO;
2117 }
2118
2119 scan_target:
2120 mr_device_priv_data = kzalloc(sizeof(*mr_device_priv_data),
2121 GFP_KERNEL);
2122 if (!mr_device_priv_data)
2123 return -ENOMEM;
2124
2125 if (MEGASAS_IS_LOGICAL(sdev)) {
2126 ld_tgt_id = MEGASAS_TARGET_ID(sdev);
2127 instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_ACTIVE;
2128 if (megasas_dbg_lvl & LD_PD_DEBUG)
2129 sdev_printk(KERN_INFO, sdev, "LD target ID %d created.\n", ld_tgt_id);
2130 }
2131
2132 sdev->hostdata = mr_device_priv_data;
2133
2134 atomic_set(&mr_device_priv_data->r1_ldio_hint,
2135 instance->r1_ldio_hint_default);
2136 return 0;
2137 }
2138
megasas_slave_destroy(struct scsi_device * sdev)2139 static void megasas_slave_destroy(struct scsi_device *sdev)
2140 {
2141 u16 ld_tgt_id;
2142 struct megasas_instance *instance;
2143
2144 instance = megasas_lookup_instance(sdev->host->host_no);
2145
2146 if (MEGASAS_IS_LOGICAL(sdev)) {
2147 if (!MEGASAS_IS_LUN_VALID(sdev)) {
2148 sdev_printk(KERN_INFO, sdev, "%s: invalid LUN\n", __func__);
2149 return;
2150 }
2151 ld_tgt_id = MEGASAS_TARGET_ID(sdev);
2152 instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_DELETED;
2153 if (megasas_dbg_lvl & LD_PD_DEBUG)
2154 sdev_printk(KERN_INFO, sdev,
2155 "LD target ID %d removed from OS stack\n", ld_tgt_id);
2156 }
2157
2158 kfree(sdev->hostdata);
2159 sdev->hostdata = NULL;
2160 }
2161
2162 /*
2163 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a
2164 * kill adapter
2165 * @instance: Adapter soft state
2166 *
2167 */
megasas_complete_outstanding_ioctls(struct megasas_instance * instance)2168 static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance)
2169 {
2170 int i;
2171 struct megasas_cmd *cmd_mfi;
2172 struct megasas_cmd_fusion *cmd_fusion;
2173 struct fusion_context *fusion = instance->ctrl_context;
2174
2175 /* Find all outstanding ioctls */
2176 if (fusion) {
2177 for (i = 0; i < instance->max_fw_cmds; i++) {
2178 cmd_fusion = fusion->cmd_list[i];
2179 if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) {
2180 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
2181 if (cmd_mfi->sync_cmd &&
2182 (cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)) {
2183 cmd_mfi->frame->hdr.cmd_status =
2184 MFI_STAT_WRONG_STATE;
2185 megasas_complete_cmd(instance,
2186 cmd_mfi, DID_OK);
2187 }
2188 }
2189 }
2190 } else {
2191 for (i = 0; i < instance->max_fw_cmds; i++) {
2192 cmd_mfi = instance->cmd_list[i];
2193 if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd !=
2194 MFI_CMD_ABORT)
2195 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
2196 }
2197 }
2198 }
2199
2200
megaraid_sas_kill_hba(struct megasas_instance * instance)2201 void megaraid_sas_kill_hba(struct megasas_instance *instance)
2202 {
2203 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2204 dev_warn(&instance->pdev->dev,
2205 "Adapter already dead, skipping kill HBA\n");
2206 return;
2207 }
2208
2209 /* Set critical error to block I/O & ioctls in case caller didn't */
2210 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2211 /* Wait 1 second to ensure IO or ioctls in build have posted */
2212 msleep(1000);
2213 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2214 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2215 (instance->adapter_type != MFI_SERIES)) {
2216 if (!instance->requestorId) {
2217 writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
2218 /* Flush */
2219 readl(&instance->reg_set->doorbell);
2220 }
2221 if (instance->requestorId && instance->peerIsPresent)
2222 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
2223 } else {
2224 writel(MFI_STOP_ADP,
2225 &instance->reg_set->inbound_doorbell);
2226 }
2227 /* Complete outstanding ioctls when adapter is killed */
2228 megasas_complete_outstanding_ioctls(instance);
2229 }
2230
2231 /**
2232 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
2233 * restored to max value
2234 * @instance: Adapter soft state
2235 *
2236 */
2237 void
megasas_check_and_restore_queue_depth(struct megasas_instance * instance)2238 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
2239 {
2240 unsigned long flags;
2241
2242 if (instance->flag & MEGASAS_FW_BUSY
2243 && time_after(jiffies, instance->last_time + 5 * HZ)
2244 && atomic_read(&instance->fw_outstanding) <
2245 instance->throttlequeuedepth + 1) {
2246
2247 spin_lock_irqsave(instance->host->host_lock, flags);
2248 instance->flag &= ~MEGASAS_FW_BUSY;
2249
2250 instance->host->can_queue = instance->cur_can_queue;
2251 spin_unlock_irqrestore(instance->host->host_lock, flags);
2252 }
2253 }
2254
2255 /**
2256 * megasas_complete_cmd_dpc - Returns FW's controller structure
2257 * @instance_addr: Address of adapter soft state
2258 *
2259 * Tasklet to complete cmds
2260 */
megasas_complete_cmd_dpc(unsigned long instance_addr)2261 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
2262 {
2263 u32 producer;
2264 u32 consumer;
2265 u32 context;
2266 struct megasas_cmd *cmd;
2267 struct megasas_instance *instance =
2268 (struct megasas_instance *)instance_addr;
2269 unsigned long flags;
2270
2271 /* If we have already declared adapter dead, donot complete cmds */
2272 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
2273 return;
2274
2275 spin_lock_irqsave(&instance->completion_lock, flags);
2276
2277 producer = le32_to_cpu(*instance->producer);
2278 consumer = le32_to_cpu(*instance->consumer);
2279
2280 while (consumer != producer) {
2281 context = le32_to_cpu(instance->reply_queue[consumer]);
2282 if (context >= instance->max_fw_cmds) {
2283 dev_err(&instance->pdev->dev, "Unexpected context value %x\n",
2284 context);
2285 BUG();
2286 }
2287
2288 cmd = instance->cmd_list[context];
2289
2290 megasas_complete_cmd(instance, cmd, DID_OK);
2291
2292 consumer++;
2293 if (consumer == (instance->max_fw_cmds + 1)) {
2294 consumer = 0;
2295 }
2296 }
2297
2298 *instance->consumer = cpu_to_le32(producer);
2299
2300 spin_unlock_irqrestore(&instance->completion_lock, flags);
2301
2302 /*
2303 * Check if we can restore can_queue
2304 */
2305 megasas_check_and_restore_queue_depth(instance);
2306 }
2307
2308 static void megasas_sriov_heartbeat_handler(struct timer_list *t);
2309
2310 /**
2311 * megasas_start_timer - Initializes sriov heartbeat timer object
2312 * @instance: Adapter soft state
2313 *
2314 */
megasas_start_timer(struct megasas_instance * instance)2315 void megasas_start_timer(struct megasas_instance *instance)
2316 {
2317 struct timer_list *timer = &instance->sriov_heartbeat_timer;
2318
2319 timer_setup(timer, megasas_sriov_heartbeat_handler, 0);
2320 timer->expires = jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF;
2321 add_timer(timer);
2322 }
2323
2324 static void
2325 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
2326
2327 static void
2328 process_fw_state_change_wq(struct work_struct *work);
2329
megasas_do_ocr(struct megasas_instance * instance)2330 static void megasas_do_ocr(struct megasas_instance *instance)
2331 {
2332 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2333 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2334 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2335 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
2336 }
2337 instance->instancet->disable_intr(instance);
2338 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
2339 instance->issuepend_done = 0;
2340
2341 atomic_set(&instance->fw_outstanding, 0);
2342 megasas_internal_reset_defer_cmds(instance);
2343 process_fw_state_change_wq(&instance->work_init);
2344 }
2345
megasas_get_ld_vf_affiliation_111(struct megasas_instance * instance,int initial)2346 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
2347 int initial)
2348 {
2349 struct megasas_cmd *cmd;
2350 struct megasas_dcmd_frame *dcmd;
2351 struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
2352 dma_addr_t new_affiliation_111_h;
2353 int ld, retval = 0;
2354 u8 thisVf;
2355
2356 cmd = megasas_get_cmd(instance);
2357
2358 if (!cmd) {
2359 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:"
2360 "Failed to get cmd for scsi%d\n",
2361 instance->host->host_no);
2362 return -ENOMEM;
2363 }
2364
2365 dcmd = &cmd->frame->dcmd;
2366
2367 if (!instance->vf_affiliation_111) {
2368 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2369 "affiliation for scsi%d\n", instance->host->host_no);
2370 megasas_return_cmd(instance, cmd);
2371 return -ENOMEM;
2372 }
2373
2374 if (initial)
2375 memset(instance->vf_affiliation_111, 0,
2376 sizeof(struct MR_LD_VF_AFFILIATION_111));
2377 else {
2378 new_affiliation_111 =
2379 dma_alloc_coherent(&instance->pdev->dev,
2380 sizeof(struct MR_LD_VF_AFFILIATION_111),
2381 &new_affiliation_111_h, GFP_KERNEL);
2382 if (!new_affiliation_111) {
2383 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2384 "memory for new affiliation for scsi%d\n",
2385 instance->host->host_no);
2386 megasas_return_cmd(instance, cmd);
2387 return -ENOMEM;
2388 }
2389 }
2390
2391 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2392
2393 dcmd->cmd = MFI_CMD_DCMD;
2394 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2395 dcmd->sge_count = 1;
2396 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2397 dcmd->timeout = 0;
2398 dcmd->pad_0 = 0;
2399 dcmd->data_xfer_len =
2400 cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111));
2401 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111);
2402
2403 if (initial)
2404 dcmd->sgl.sge32[0].phys_addr =
2405 cpu_to_le32(instance->vf_affiliation_111_h);
2406 else
2407 dcmd->sgl.sge32[0].phys_addr =
2408 cpu_to_le32(new_affiliation_111_h);
2409
2410 dcmd->sgl.sge32[0].length = cpu_to_le32(
2411 sizeof(struct MR_LD_VF_AFFILIATION_111));
2412
2413 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2414 "scsi%d\n", instance->host->host_no);
2415
2416 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2417 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2418 " failed with status 0x%x for scsi%d\n",
2419 dcmd->cmd_status, instance->host->host_no);
2420 retval = 1; /* Do a scan if we couldn't get affiliation */
2421 goto out;
2422 }
2423
2424 if (!initial) {
2425 thisVf = new_affiliation_111->thisVf;
2426 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
2427 if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
2428 new_affiliation_111->map[ld].policy[thisVf]) {
2429 dev_warn(&instance->pdev->dev, "SR-IOV: "
2430 "Got new LD/VF affiliation for scsi%d\n",
2431 instance->host->host_no);
2432 memcpy(instance->vf_affiliation_111,
2433 new_affiliation_111,
2434 sizeof(struct MR_LD_VF_AFFILIATION_111));
2435 retval = 1;
2436 goto out;
2437 }
2438 }
2439 out:
2440 if (new_affiliation_111) {
2441 dma_free_coherent(&instance->pdev->dev,
2442 sizeof(struct MR_LD_VF_AFFILIATION_111),
2443 new_affiliation_111,
2444 new_affiliation_111_h);
2445 }
2446
2447 megasas_return_cmd(instance, cmd);
2448
2449 return retval;
2450 }
2451
megasas_get_ld_vf_affiliation_12(struct megasas_instance * instance,int initial)2452 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
2453 int initial)
2454 {
2455 struct megasas_cmd *cmd;
2456 struct megasas_dcmd_frame *dcmd;
2457 struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
2458 struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
2459 dma_addr_t new_affiliation_h;
2460 int i, j, retval = 0, found = 0, doscan = 0;
2461 u8 thisVf;
2462
2463 cmd = megasas_get_cmd(instance);
2464
2465 if (!cmd) {
2466 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: "
2467 "Failed to get cmd for scsi%d\n",
2468 instance->host->host_no);
2469 return -ENOMEM;
2470 }
2471
2472 dcmd = &cmd->frame->dcmd;
2473
2474 if (!instance->vf_affiliation) {
2475 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2476 "affiliation for scsi%d\n", instance->host->host_no);
2477 megasas_return_cmd(instance, cmd);
2478 return -ENOMEM;
2479 }
2480
2481 if (initial)
2482 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2483 sizeof(struct MR_LD_VF_AFFILIATION));
2484 else {
2485 new_affiliation =
2486 dma_alloc_coherent(&instance->pdev->dev,
2487 (MAX_LOGICAL_DRIVES + 1) * sizeof(struct MR_LD_VF_AFFILIATION),
2488 &new_affiliation_h, GFP_KERNEL);
2489 if (!new_affiliation) {
2490 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2491 "memory for new affiliation for scsi%d\n",
2492 instance->host->host_no);
2493 megasas_return_cmd(instance, cmd);
2494 return -ENOMEM;
2495 }
2496 }
2497
2498 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2499
2500 dcmd->cmd = MFI_CMD_DCMD;
2501 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2502 dcmd->sge_count = 1;
2503 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2504 dcmd->timeout = 0;
2505 dcmd->pad_0 = 0;
2506 dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2507 sizeof(struct MR_LD_VF_AFFILIATION));
2508 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS);
2509
2510 if (initial)
2511 dcmd->sgl.sge32[0].phys_addr =
2512 cpu_to_le32(instance->vf_affiliation_h);
2513 else
2514 dcmd->sgl.sge32[0].phys_addr =
2515 cpu_to_le32(new_affiliation_h);
2516
2517 dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2518 sizeof(struct MR_LD_VF_AFFILIATION));
2519
2520 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2521 "scsi%d\n", instance->host->host_no);
2522
2523
2524 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2525 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2526 " failed with status 0x%x for scsi%d\n",
2527 dcmd->cmd_status, instance->host->host_no);
2528 retval = 1; /* Do a scan if we couldn't get affiliation */
2529 goto out;
2530 }
2531
2532 if (!initial) {
2533 if (!new_affiliation->ldCount) {
2534 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2535 "affiliation for passive path for scsi%d\n",
2536 instance->host->host_no);
2537 retval = 1;
2538 goto out;
2539 }
2540 newmap = new_affiliation->map;
2541 savedmap = instance->vf_affiliation->map;
2542 thisVf = new_affiliation->thisVf;
2543 for (i = 0 ; i < new_affiliation->ldCount; i++) {
2544 found = 0;
2545 for (j = 0; j < instance->vf_affiliation->ldCount;
2546 j++) {
2547 if (newmap->ref.targetId ==
2548 savedmap->ref.targetId) {
2549 found = 1;
2550 if (newmap->policy[thisVf] !=
2551 savedmap->policy[thisVf]) {
2552 doscan = 1;
2553 goto out;
2554 }
2555 }
2556 savedmap = (struct MR_LD_VF_MAP *)
2557 ((unsigned char *)savedmap +
2558 savedmap->size);
2559 }
2560 if (!found && newmap->policy[thisVf] !=
2561 MR_LD_ACCESS_HIDDEN) {
2562 doscan = 1;
2563 goto out;
2564 }
2565 newmap = (struct MR_LD_VF_MAP *)
2566 ((unsigned char *)newmap + newmap->size);
2567 }
2568
2569 newmap = new_affiliation->map;
2570 savedmap = instance->vf_affiliation->map;
2571
2572 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
2573 found = 0;
2574 for (j = 0 ; j < new_affiliation->ldCount; j++) {
2575 if (savedmap->ref.targetId ==
2576 newmap->ref.targetId) {
2577 found = 1;
2578 if (savedmap->policy[thisVf] !=
2579 newmap->policy[thisVf]) {
2580 doscan = 1;
2581 goto out;
2582 }
2583 }
2584 newmap = (struct MR_LD_VF_MAP *)
2585 ((unsigned char *)newmap +
2586 newmap->size);
2587 }
2588 if (!found && savedmap->policy[thisVf] !=
2589 MR_LD_ACCESS_HIDDEN) {
2590 doscan = 1;
2591 goto out;
2592 }
2593 savedmap = (struct MR_LD_VF_MAP *)
2594 ((unsigned char *)savedmap +
2595 savedmap->size);
2596 }
2597 }
2598 out:
2599 if (doscan) {
2600 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2601 "affiliation for scsi%d\n", instance->host->host_no);
2602 memcpy(instance->vf_affiliation, new_affiliation,
2603 new_affiliation->size);
2604 retval = 1;
2605 }
2606
2607 if (new_affiliation)
2608 dma_free_coherent(&instance->pdev->dev,
2609 (MAX_LOGICAL_DRIVES + 1) *
2610 sizeof(struct MR_LD_VF_AFFILIATION),
2611 new_affiliation, new_affiliation_h);
2612 megasas_return_cmd(instance, cmd);
2613
2614 return retval;
2615 }
2616
2617 /* This function will get the current SR-IOV LD/VF affiliation */
megasas_get_ld_vf_affiliation(struct megasas_instance * instance,int initial)2618 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
2619 int initial)
2620 {
2621 int retval;
2622
2623 if (instance->PlasmaFW111)
2624 retval = megasas_get_ld_vf_affiliation_111(instance, initial);
2625 else
2626 retval = megasas_get_ld_vf_affiliation_12(instance, initial);
2627 return retval;
2628 }
2629
2630 /* This function will tell FW to start the SR-IOV heartbeat */
megasas_sriov_start_heartbeat(struct megasas_instance * instance,int initial)2631 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2632 int initial)
2633 {
2634 struct megasas_cmd *cmd;
2635 struct megasas_dcmd_frame *dcmd;
2636 int retval = 0;
2637
2638 cmd = megasas_get_cmd(instance);
2639
2640 if (!cmd) {
2641 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: "
2642 "Failed to get cmd for scsi%d\n",
2643 instance->host->host_no);
2644 return -ENOMEM;
2645 }
2646
2647 dcmd = &cmd->frame->dcmd;
2648
2649 if (initial) {
2650 instance->hb_host_mem =
2651 dma_alloc_coherent(&instance->pdev->dev,
2652 sizeof(struct MR_CTRL_HB_HOST_MEM),
2653 &instance->hb_host_mem_h,
2654 GFP_KERNEL);
2655 if (!instance->hb_host_mem) {
2656 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate"
2657 " memory for heartbeat host memory for scsi%d\n",
2658 instance->host->host_no);
2659 retval = -ENOMEM;
2660 goto out;
2661 }
2662 }
2663
2664 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2665
2666 dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM));
2667 dcmd->cmd = MFI_CMD_DCMD;
2668 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2669 dcmd->sge_count = 1;
2670 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2671 dcmd->timeout = 0;
2672 dcmd->pad_0 = 0;
2673 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2674 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC);
2675
2676 megasas_set_dma_settings(instance, dcmd, instance->hb_host_mem_h,
2677 sizeof(struct MR_CTRL_HB_HOST_MEM));
2678
2679 dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n",
2680 instance->host->host_no);
2681
2682 if ((instance->adapter_type != MFI_SERIES) &&
2683 !instance->mask_interrupts)
2684 retval = megasas_issue_blocked_cmd(instance, cmd,
2685 MEGASAS_ROUTINE_WAIT_TIME_VF);
2686 else
2687 retval = megasas_issue_polled(instance, cmd);
2688
2689 if (retval) {
2690 dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2691 "_MEM_ALLOC DCMD %s for scsi%d\n",
2692 (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ?
2693 "timed out" : "failed", instance->host->host_no);
2694 retval = 1;
2695 }
2696
2697 out:
2698 megasas_return_cmd(instance, cmd);
2699
2700 return retval;
2701 }
2702
2703 /* Handler for SR-IOV heartbeat */
megasas_sriov_heartbeat_handler(struct timer_list * t)2704 static void megasas_sriov_heartbeat_handler(struct timer_list *t)
2705 {
2706 struct megasas_instance *instance =
2707 from_timer(instance, t, sriov_heartbeat_timer);
2708
2709 if (instance->hb_host_mem->HB.fwCounter !=
2710 instance->hb_host_mem->HB.driverCounter) {
2711 instance->hb_host_mem->HB.driverCounter =
2712 instance->hb_host_mem->HB.fwCounter;
2713 mod_timer(&instance->sriov_heartbeat_timer,
2714 jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2715 } else {
2716 dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never "
2717 "completed for scsi%d\n", instance->host->host_no);
2718 schedule_work(&instance->work_init);
2719 }
2720 }
2721
2722 /**
2723 * megasas_wait_for_outstanding - Wait for all outstanding cmds
2724 * @instance: Adapter soft state
2725 *
2726 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
2727 * complete all its outstanding commands. Returns error if one or more IOs
2728 * are pending after this time period. It also marks the controller dead.
2729 */
megasas_wait_for_outstanding(struct megasas_instance * instance)2730 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2731 {
2732 int i, sl, outstanding;
2733 u32 reset_index;
2734 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
2735 unsigned long flags;
2736 struct list_head clist_local;
2737 struct megasas_cmd *reset_cmd;
2738 u32 fw_state;
2739
2740 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2741 dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n",
2742 __func__, __LINE__);
2743 return FAILED;
2744 }
2745
2746 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2747
2748 INIT_LIST_HEAD(&clist_local);
2749 spin_lock_irqsave(&instance->hba_lock, flags);
2750 list_splice_init(&instance->internal_reset_pending_q,
2751 &clist_local);
2752 spin_unlock_irqrestore(&instance->hba_lock, flags);
2753
2754 dev_notice(&instance->pdev->dev, "HBA reset wait ...\n");
2755 for (i = 0; i < wait_time; i++) {
2756 msleep(1000);
2757 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL)
2758 break;
2759 }
2760
2761 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2762 dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n");
2763 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2764 return FAILED;
2765 }
2766
2767 reset_index = 0;
2768 while (!list_empty(&clist_local)) {
2769 reset_cmd = list_entry((&clist_local)->next,
2770 struct megasas_cmd, list);
2771 list_del_init(&reset_cmd->list);
2772 if (reset_cmd->scmd) {
2773 reset_cmd->scmd->result = DID_REQUEUE << 16;
2774 dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n",
2775 reset_index, reset_cmd,
2776 reset_cmd->scmd->cmnd[0]);
2777
2778 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
2779 megasas_return_cmd(instance, reset_cmd);
2780 } else if (reset_cmd->sync_cmd) {
2781 dev_notice(&instance->pdev->dev, "%p synch cmds"
2782 "reset queue\n",
2783 reset_cmd);
2784
2785 reset_cmd->cmd_status_drv = DCMD_INIT;
2786 instance->instancet->fire_cmd(instance,
2787 reset_cmd->frame_phys_addr,
2788 0, instance->reg_set);
2789 } else {
2790 dev_notice(&instance->pdev->dev, "%p unexpected"
2791 "cmds lst\n",
2792 reset_cmd);
2793 }
2794 reset_index++;
2795 }
2796
2797 return SUCCESS;
2798 }
2799
2800 for (i = 0; i < resetwaittime; i++) {
2801 outstanding = atomic_read(&instance->fw_outstanding);
2802
2803 if (!outstanding)
2804 break;
2805
2806 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2807 dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
2808 "commands to complete\n",i,outstanding);
2809 /*
2810 * Call cmd completion routine. Cmd to be
2811 * be completed directly without depending on isr.
2812 */
2813 megasas_complete_cmd_dpc((unsigned long)instance);
2814 }
2815
2816 msleep(1000);
2817 }
2818
2819 i = 0;
2820 outstanding = atomic_read(&instance->fw_outstanding);
2821 fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2822
2823 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2824 goto no_outstanding;
2825
2826 if (instance->disableOnlineCtrlReset)
2827 goto kill_hba_and_failed;
2828 do {
2829 if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) {
2830 dev_info(&instance->pdev->dev,
2831 "%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, outstanding 0x%x\n",
2832 __func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding));
2833 if (i == 3)
2834 goto kill_hba_and_failed;
2835 megasas_do_ocr(instance);
2836
2837 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2838 dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n",
2839 __func__, __LINE__);
2840 return FAILED;
2841 }
2842 dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n",
2843 __func__, __LINE__);
2844
2845 for (sl = 0; sl < 10; sl++)
2846 msleep(500);
2847
2848 outstanding = atomic_read(&instance->fw_outstanding);
2849
2850 fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2851 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2852 goto no_outstanding;
2853 }
2854 i++;
2855 } while (i <= 3);
2856
2857 no_outstanding:
2858
2859 dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n",
2860 __func__, __LINE__);
2861 return SUCCESS;
2862
2863 kill_hba_and_failed:
2864
2865 /* Reset not supported, kill adapter */
2866 dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d"
2867 " disableOnlineCtrlReset %d fw_outstanding %d \n",
2868 __func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset,
2869 atomic_read(&instance->fw_outstanding));
2870 megasas_dump_pending_frames(instance);
2871 megaraid_sas_kill_hba(instance);
2872
2873 return FAILED;
2874 }
2875
2876 /**
2877 * megasas_generic_reset - Generic reset routine
2878 * @scmd: Mid-layer SCSI command
2879 *
2880 * This routine implements a generic reset handler for device, bus and host
2881 * reset requests. Device, bus and host specific reset handlers can use this
2882 * function after they do their specific tasks.
2883 */
megasas_generic_reset(struct scsi_cmnd * scmd)2884 static int megasas_generic_reset(struct scsi_cmnd *scmd)
2885 {
2886 int ret_val;
2887 struct megasas_instance *instance;
2888
2889 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2890
2891 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2892 scmd->cmnd[0], scmd->retries);
2893
2894 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2895 dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n");
2896 return FAILED;
2897 }
2898
2899 ret_val = megasas_wait_for_outstanding(instance);
2900 if (ret_val == SUCCESS)
2901 dev_notice(&instance->pdev->dev, "reset successful\n");
2902 else
2903 dev_err(&instance->pdev->dev, "failed to do reset\n");
2904
2905 return ret_val;
2906 }
2907
2908 /**
2909 * megasas_reset_timer - quiesce the adapter if required
2910 * @scmd: scsi cmnd
2911 *
2912 * Sets the FW busy flag and reduces the host->can_queue if the
2913 * cmd has not been completed within the timeout period.
2914 */
2915 static enum
megasas_reset_timer(struct scsi_cmnd * scmd)2916 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
2917 {
2918 struct megasas_instance *instance;
2919 unsigned long flags;
2920
2921 if (time_after(jiffies, scmd->jiffies_at_alloc +
2922 (scmd_timeout * 2) * HZ)) {
2923 return BLK_EH_DONE;
2924 }
2925
2926 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2927 if (!(instance->flag & MEGASAS_FW_BUSY)) {
2928 /* FW is busy, throttle IO */
2929 spin_lock_irqsave(instance->host->host_lock, flags);
2930
2931 instance->host->can_queue = instance->throttlequeuedepth;
2932 instance->last_time = jiffies;
2933 instance->flag |= MEGASAS_FW_BUSY;
2934
2935 spin_unlock_irqrestore(instance->host->host_lock, flags);
2936 }
2937 return BLK_EH_RESET_TIMER;
2938 }
2939
2940 /**
2941 * megasas_dump - This function will print hexdump of provided buffer.
2942 * @buf: Buffer to be dumped
2943 * @sz: Size in bytes
2944 * @format: Different formats of dumping e.g. format=n will
2945 * cause only 'n' 32 bit words to be dumped in a single
2946 * line.
2947 */
2948 inline void
megasas_dump(void * buf,int sz,int format)2949 megasas_dump(void *buf, int sz, int format)
2950 {
2951 int i;
2952 __le32 *buf_loc = (__le32 *)buf;
2953
2954 for (i = 0; i < (sz / sizeof(__le32)); i++) {
2955 if ((i % format) == 0) {
2956 if (i != 0)
2957 printk(KERN_CONT "\n");
2958 printk(KERN_CONT "%08x: ", (i * 4));
2959 }
2960 printk(KERN_CONT "%08x ", le32_to_cpu(buf_loc[i]));
2961 }
2962 printk(KERN_CONT "\n");
2963 }
2964
2965 /**
2966 * megasas_dump_reg_set - This function will print hexdump of register set
2967 * @reg_set: Register set to be dumped
2968 */
2969 inline void
megasas_dump_reg_set(void __iomem * reg_set)2970 megasas_dump_reg_set(void __iomem *reg_set)
2971 {
2972 unsigned int i, sz = 256;
2973 u32 __iomem *reg = (u32 __iomem *)reg_set;
2974
2975 for (i = 0; i < (sz / sizeof(u32)); i++)
2976 printk("%08x: %08x\n", (i * 4), readl(®[i]));
2977 }
2978
2979 /**
2980 * megasas_dump_fusion_io - This function will print key details
2981 * of SCSI IO
2982 * @scmd: SCSI command pointer of SCSI IO
2983 */
2984 void
megasas_dump_fusion_io(struct scsi_cmnd * scmd)2985 megasas_dump_fusion_io(struct scsi_cmnd *scmd)
2986 {
2987 struct megasas_cmd_fusion *cmd;
2988 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2989 struct megasas_instance *instance;
2990
2991 cmd = (struct megasas_cmd_fusion *)scmd->SCp.ptr;
2992 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2993
2994 scmd_printk(KERN_INFO, scmd,
2995 "scmd: (0x%p) retries: 0x%x allowed: 0x%x\n",
2996 scmd, scmd->retries, scmd->allowed);
2997 scsi_print_command(scmd);
2998
2999 if (cmd) {
3000 req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
3001 scmd_printk(KERN_INFO, scmd, "Request descriptor details:\n");
3002 scmd_printk(KERN_INFO, scmd,
3003 "RequestFlags:0x%x MSIxIndex:0x%x SMID:0x%x LMID:0x%x DevHandle:0x%x\n",
3004 req_desc->SCSIIO.RequestFlags,
3005 req_desc->SCSIIO.MSIxIndex, req_desc->SCSIIO.SMID,
3006 req_desc->SCSIIO.LMID, req_desc->SCSIIO.DevHandle);
3007
3008 printk(KERN_INFO "IO request frame:\n");
3009 megasas_dump(cmd->io_request,
3010 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE, 8);
3011 printk(KERN_INFO "Chain frame:\n");
3012 megasas_dump(cmd->sg_frame,
3013 instance->max_chain_frame_sz, 8);
3014 }
3015
3016 }
3017
3018 /*
3019 * megasas_dump_sys_regs - This function will dump system registers through
3020 * sysfs.
3021 * @reg_set: Pointer to System register set.
3022 * @buf: Buffer to which output is to be written.
3023 * @return: Number of bytes written to buffer.
3024 */
3025 static inline ssize_t
megasas_dump_sys_regs(void __iomem * reg_set,char * buf)3026 megasas_dump_sys_regs(void __iomem *reg_set, char *buf)
3027 {
3028 unsigned int i, sz = 256;
3029 int bytes_wrote = 0;
3030 char *loc = (char *)buf;
3031 u32 __iomem *reg = (u32 __iomem *)reg_set;
3032
3033 for (i = 0; i < sz / sizeof(u32); i++) {
3034 bytes_wrote += scnprintf(loc + bytes_wrote,
3035 PAGE_SIZE - bytes_wrote,
3036 "%08x: %08x\n", (i * 4),
3037 readl(®[i]));
3038 }
3039 return bytes_wrote;
3040 }
3041
3042 /**
3043 * megasas_reset_bus_host - Bus & host reset handler entry point
3044 * @scmd: Mid-layer SCSI command
3045 */
megasas_reset_bus_host(struct scsi_cmnd * scmd)3046 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
3047 {
3048 int ret;
3049 struct megasas_instance *instance;
3050
3051 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3052
3053 scmd_printk(KERN_INFO, scmd,
3054 "OCR is requested due to IO timeout!!\n");
3055
3056 scmd_printk(KERN_INFO, scmd,
3057 "SCSI host state: %d SCSI host busy: %d FW outstanding: %d\n",
3058 scmd->device->host->shost_state,
3059 scsi_host_busy(scmd->device->host),
3060 atomic_read(&instance->fw_outstanding));
3061 /*
3062 * First wait for all commands to complete
3063 */
3064 if (instance->adapter_type == MFI_SERIES) {
3065 ret = megasas_generic_reset(scmd);
3066 } else {
3067 megasas_dump_fusion_io(scmd);
3068 ret = megasas_reset_fusion(scmd->device->host,
3069 SCSIIO_TIMEOUT_OCR);
3070 }
3071
3072 return ret;
3073 }
3074
3075 /**
3076 * megasas_task_abort - Issues task abort request to firmware
3077 * (supported only for fusion adapters)
3078 * @scmd: SCSI command pointer
3079 */
megasas_task_abort(struct scsi_cmnd * scmd)3080 static int megasas_task_abort(struct scsi_cmnd *scmd)
3081 {
3082 int ret;
3083 struct megasas_instance *instance;
3084
3085 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3086
3087 if (instance->adapter_type != MFI_SERIES)
3088 ret = megasas_task_abort_fusion(scmd);
3089 else {
3090 sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n");
3091 ret = FAILED;
3092 }
3093
3094 return ret;
3095 }
3096
3097 /**
3098 * megasas_reset_target: Issues target reset request to firmware
3099 * (supported only for fusion adapters)
3100 * @scmd: SCSI command pointer
3101 */
megasas_reset_target(struct scsi_cmnd * scmd)3102 static int megasas_reset_target(struct scsi_cmnd *scmd)
3103 {
3104 int ret;
3105 struct megasas_instance *instance;
3106
3107 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3108
3109 if (instance->adapter_type != MFI_SERIES)
3110 ret = megasas_reset_target_fusion(scmd);
3111 else {
3112 sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n");
3113 ret = FAILED;
3114 }
3115
3116 return ret;
3117 }
3118
3119 /**
3120 * megasas_bios_param - Returns disk geometry for a disk
3121 * @sdev: device handle
3122 * @bdev: block device
3123 * @capacity: drive capacity
3124 * @geom: geometry parameters
3125 */
3126 static int
megasas_bios_param(struct scsi_device * sdev,struct block_device * bdev,sector_t capacity,int geom[])3127 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
3128 sector_t capacity, int geom[])
3129 {
3130 int heads;
3131 int sectors;
3132 sector_t cylinders;
3133 unsigned long tmp;
3134
3135 /* Default heads (64) & sectors (32) */
3136 heads = 64;
3137 sectors = 32;
3138
3139 tmp = heads * sectors;
3140 cylinders = capacity;
3141
3142 sector_div(cylinders, tmp);
3143
3144 /*
3145 * Handle extended translation size for logical drives > 1Gb
3146 */
3147
3148 if (capacity >= 0x200000) {
3149 heads = 255;
3150 sectors = 63;
3151 tmp = heads*sectors;
3152 cylinders = capacity;
3153 sector_div(cylinders, tmp);
3154 }
3155
3156 geom[0] = heads;
3157 geom[1] = sectors;
3158 geom[2] = cylinders;
3159
3160 return 0;
3161 }
3162
3163 static void megasas_aen_polling(struct work_struct *work);
3164
3165 /**
3166 * megasas_service_aen - Processes an event notification
3167 * @instance: Adapter soft state
3168 * @cmd: AEN command completed by the ISR
3169 *
3170 * For AEN, driver sends a command down to FW that is held by the FW till an
3171 * event occurs. When an event of interest occurs, FW completes the command
3172 * that it was previously holding.
3173 *
3174 * This routines sends SIGIO signal to processes that have registered with the
3175 * driver for AEN.
3176 */
3177 static void
megasas_service_aen(struct megasas_instance * instance,struct megasas_cmd * cmd)3178 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
3179 {
3180 unsigned long flags;
3181
3182 /*
3183 * Don't signal app if it is just an aborted previously registered aen
3184 */
3185 if ((!cmd->abort_aen) && (instance->unload == 0)) {
3186 spin_lock_irqsave(&poll_aen_lock, flags);
3187 megasas_poll_wait_aen = 1;
3188 spin_unlock_irqrestore(&poll_aen_lock, flags);
3189 wake_up(&megasas_poll_wait);
3190 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
3191 }
3192 else
3193 cmd->abort_aen = 0;
3194
3195 instance->aen_cmd = NULL;
3196
3197 megasas_return_cmd(instance, cmd);
3198
3199 if ((instance->unload == 0) &&
3200 ((instance->issuepend_done == 1))) {
3201 struct megasas_aen_event *ev;
3202
3203 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
3204 if (!ev) {
3205 dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n");
3206 } else {
3207 ev->instance = instance;
3208 instance->ev = ev;
3209 INIT_DELAYED_WORK(&ev->hotplug_work,
3210 megasas_aen_polling);
3211 schedule_delayed_work(&ev->hotplug_work, 0);
3212 }
3213 }
3214 }
3215
3216 static ssize_t
fw_crash_buffer_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3217 fw_crash_buffer_store(struct device *cdev,
3218 struct device_attribute *attr, const char *buf, size_t count)
3219 {
3220 struct Scsi_Host *shost = class_to_shost(cdev);
3221 struct megasas_instance *instance =
3222 (struct megasas_instance *) shost->hostdata;
3223 int val = 0;
3224 unsigned long flags;
3225
3226 if (kstrtoint(buf, 0, &val) != 0)
3227 return -EINVAL;
3228
3229 spin_lock_irqsave(&instance->crashdump_lock, flags);
3230 instance->fw_crash_buffer_offset = val;
3231 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3232 return strlen(buf);
3233 }
3234
3235 static ssize_t
fw_crash_buffer_show(struct device * cdev,struct device_attribute * attr,char * buf)3236 fw_crash_buffer_show(struct device *cdev,
3237 struct device_attribute *attr, char *buf)
3238 {
3239 struct Scsi_Host *shost = class_to_shost(cdev);
3240 struct megasas_instance *instance =
3241 (struct megasas_instance *) shost->hostdata;
3242 u32 size;
3243 unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
3244 unsigned long chunk_left_bytes;
3245 unsigned long src_addr;
3246 unsigned long flags;
3247 u32 buff_offset;
3248
3249 spin_lock_irqsave(&instance->crashdump_lock, flags);
3250 buff_offset = instance->fw_crash_buffer_offset;
3251 if (!instance->crash_dump_buf &&
3252 !((instance->fw_crash_state == AVAILABLE) ||
3253 (instance->fw_crash_state == COPYING))) {
3254 dev_err(&instance->pdev->dev,
3255 "Firmware crash dump is not available\n");
3256 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3257 return -EINVAL;
3258 }
3259
3260 if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) {
3261 dev_err(&instance->pdev->dev,
3262 "Firmware crash dump offset is out of range\n");
3263 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3264 return 0;
3265 }
3266
3267 size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
3268 chunk_left_bytes = dmachunk - (buff_offset % dmachunk);
3269 size = (size > chunk_left_bytes) ? chunk_left_bytes : size;
3270 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
3271
3272 src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
3273 (buff_offset % dmachunk);
3274 memcpy(buf, (void *)src_addr, size);
3275 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3276
3277 return size;
3278 }
3279
3280 static ssize_t
fw_crash_buffer_size_show(struct device * cdev,struct device_attribute * attr,char * buf)3281 fw_crash_buffer_size_show(struct device *cdev,
3282 struct device_attribute *attr, char *buf)
3283 {
3284 struct Scsi_Host *shost = class_to_shost(cdev);
3285 struct megasas_instance *instance =
3286 (struct megasas_instance *) shost->hostdata;
3287
3288 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
3289 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
3290 }
3291
3292 static ssize_t
fw_crash_state_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3293 fw_crash_state_store(struct device *cdev,
3294 struct device_attribute *attr, const char *buf, size_t count)
3295 {
3296 struct Scsi_Host *shost = class_to_shost(cdev);
3297 struct megasas_instance *instance =
3298 (struct megasas_instance *) shost->hostdata;
3299 int val = 0;
3300 unsigned long flags;
3301
3302 if (kstrtoint(buf, 0, &val) != 0)
3303 return -EINVAL;
3304
3305 if ((val <= AVAILABLE || val > COPY_ERROR)) {
3306 dev_err(&instance->pdev->dev, "application updates invalid "
3307 "firmware crash state\n");
3308 return -EINVAL;
3309 }
3310
3311 instance->fw_crash_state = val;
3312
3313 if ((val == COPIED) || (val == COPY_ERROR)) {
3314 spin_lock_irqsave(&instance->crashdump_lock, flags);
3315 megasas_free_host_crash_buffer(instance);
3316 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3317 if (val == COPY_ERROR)
3318 dev_info(&instance->pdev->dev, "application failed to "
3319 "copy Firmware crash dump\n");
3320 else
3321 dev_info(&instance->pdev->dev, "Firmware crash dump "
3322 "copied successfully\n");
3323 }
3324 return strlen(buf);
3325 }
3326
3327 static ssize_t
fw_crash_state_show(struct device * cdev,struct device_attribute * attr,char * buf)3328 fw_crash_state_show(struct device *cdev,
3329 struct device_attribute *attr, char *buf)
3330 {
3331 struct Scsi_Host *shost = class_to_shost(cdev);
3332 struct megasas_instance *instance =
3333 (struct megasas_instance *) shost->hostdata;
3334
3335 return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
3336 }
3337
3338 static ssize_t
page_size_show(struct device * cdev,struct device_attribute * attr,char * buf)3339 page_size_show(struct device *cdev,
3340 struct device_attribute *attr, char *buf)
3341 {
3342 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
3343 }
3344
3345 static ssize_t
ldio_outstanding_show(struct device * cdev,struct device_attribute * attr,char * buf)3346 ldio_outstanding_show(struct device *cdev, struct device_attribute *attr,
3347 char *buf)
3348 {
3349 struct Scsi_Host *shost = class_to_shost(cdev);
3350 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3351
3352 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding));
3353 }
3354
3355 static ssize_t
fw_cmds_outstanding_show(struct device * cdev,struct device_attribute * attr,char * buf)3356 fw_cmds_outstanding_show(struct device *cdev,
3357 struct device_attribute *attr, char *buf)
3358 {
3359 struct Scsi_Host *shost = class_to_shost(cdev);
3360 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3361
3362 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->fw_outstanding));
3363 }
3364
3365 static ssize_t
enable_sdev_max_qd_show(struct device * cdev,struct device_attribute * attr,char * buf)3366 enable_sdev_max_qd_show(struct device *cdev,
3367 struct device_attribute *attr, char *buf)
3368 {
3369 struct Scsi_Host *shost = class_to_shost(cdev);
3370 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3371
3372 return snprintf(buf, PAGE_SIZE, "%d\n", instance->enable_sdev_max_qd);
3373 }
3374
3375 static ssize_t
enable_sdev_max_qd_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3376 enable_sdev_max_qd_store(struct device *cdev,
3377 struct device_attribute *attr, const char *buf, size_t count)
3378 {
3379 struct Scsi_Host *shost = class_to_shost(cdev);
3380 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3381 u32 val = 0;
3382 bool is_target_prop;
3383 int ret_target_prop = DCMD_FAILED;
3384 struct scsi_device *sdev;
3385
3386 if (kstrtou32(buf, 0, &val) != 0) {
3387 pr_err("megasas: could not set enable_sdev_max_qd\n");
3388 return -EINVAL;
3389 }
3390
3391 mutex_lock(&instance->reset_mutex);
3392 if (val)
3393 instance->enable_sdev_max_qd = true;
3394 else
3395 instance->enable_sdev_max_qd = false;
3396
3397 shost_for_each_device(sdev, shost) {
3398 ret_target_prop = megasas_get_target_prop(instance, sdev);
3399 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
3400 megasas_set_fw_assisted_qd(sdev, is_target_prop);
3401 }
3402 mutex_unlock(&instance->reset_mutex);
3403
3404 return strlen(buf);
3405 }
3406
3407 static ssize_t
dump_system_regs_show(struct device * cdev,struct device_attribute * attr,char * buf)3408 dump_system_regs_show(struct device *cdev,
3409 struct device_attribute *attr, char *buf)
3410 {
3411 struct Scsi_Host *shost = class_to_shost(cdev);
3412 struct megasas_instance *instance =
3413 (struct megasas_instance *)shost->hostdata;
3414
3415 return megasas_dump_sys_regs(instance->reg_set, buf);
3416 }
3417
3418 static ssize_t
raid_map_id_show(struct device * cdev,struct device_attribute * attr,char * buf)3419 raid_map_id_show(struct device *cdev, struct device_attribute *attr,
3420 char *buf)
3421 {
3422 struct Scsi_Host *shost = class_to_shost(cdev);
3423 struct megasas_instance *instance =
3424 (struct megasas_instance *)shost->hostdata;
3425
3426 return snprintf(buf, PAGE_SIZE, "%ld\n",
3427 (unsigned long)instance->map_id);
3428 }
3429
3430 static DEVICE_ATTR_RW(fw_crash_buffer);
3431 static DEVICE_ATTR_RO(fw_crash_buffer_size);
3432 static DEVICE_ATTR_RW(fw_crash_state);
3433 static DEVICE_ATTR_RO(page_size);
3434 static DEVICE_ATTR_RO(ldio_outstanding);
3435 static DEVICE_ATTR_RO(fw_cmds_outstanding);
3436 static DEVICE_ATTR_RW(enable_sdev_max_qd);
3437 static DEVICE_ATTR_RO(dump_system_regs);
3438 static DEVICE_ATTR_RO(raid_map_id);
3439
3440 static struct device_attribute *megaraid_host_attrs[] = {
3441 &dev_attr_fw_crash_buffer_size,
3442 &dev_attr_fw_crash_buffer,
3443 &dev_attr_fw_crash_state,
3444 &dev_attr_page_size,
3445 &dev_attr_ldio_outstanding,
3446 &dev_attr_fw_cmds_outstanding,
3447 &dev_attr_enable_sdev_max_qd,
3448 &dev_attr_dump_system_regs,
3449 &dev_attr_raid_map_id,
3450 NULL,
3451 };
3452
3453 /*
3454 * Scsi host template for megaraid_sas driver
3455 */
3456 static struct scsi_host_template megasas_template = {
3457
3458 .module = THIS_MODULE,
3459 .name = "Avago SAS based MegaRAID driver",
3460 .proc_name = "megaraid_sas",
3461 .slave_configure = megasas_slave_configure,
3462 .slave_alloc = megasas_slave_alloc,
3463 .slave_destroy = megasas_slave_destroy,
3464 .queuecommand = megasas_queue_command,
3465 .eh_target_reset_handler = megasas_reset_target,
3466 .eh_abort_handler = megasas_task_abort,
3467 .eh_host_reset_handler = megasas_reset_bus_host,
3468 .eh_timed_out = megasas_reset_timer,
3469 .shost_attrs = megaraid_host_attrs,
3470 .bios_param = megasas_bios_param,
3471 .change_queue_depth = scsi_change_queue_depth,
3472 .max_segment_size = 0xffffffff,
3473 };
3474
3475 /**
3476 * megasas_complete_int_cmd - Completes an internal command
3477 * @instance: Adapter soft state
3478 * @cmd: Command to be completed
3479 *
3480 * The megasas_issue_blocked_cmd() function waits for a command to complete
3481 * after it issues a command. This function wakes up that waiting routine by
3482 * calling wake_up() on the wait queue.
3483 */
3484 static void
megasas_complete_int_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd)3485 megasas_complete_int_cmd(struct megasas_instance *instance,
3486 struct megasas_cmd *cmd)
3487 {
3488 if (cmd->cmd_status_drv == DCMD_INIT)
3489 cmd->cmd_status_drv =
3490 (cmd->frame->io.cmd_status == MFI_STAT_OK) ?
3491 DCMD_SUCCESS : DCMD_FAILED;
3492
3493 wake_up(&instance->int_cmd_wait_q);
3494 }
3495
3496 /**
3497 * megasas_complete_abort - Completes aborting a command
3498 * @instance: Adapter soft state
3499 * @cmd: Cmd that was issued to abort another cmd
3500 *
3501 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
3502 * after it issues an abort on a previously issued command. This function
3503 * wakes up all functions waiting on the same wait queue.
3504 */
3505 static void
megasas_complete_abort(struct megasas_instance * instance,struct megasas_cmd * cmd)3506 megasas_complete_abort(struct megasas_instance *instance,
3507 struct megasas_cmd *cmd)
3508 {
3509 if (cmd->sync_cmd) {
3510 cmd->sync_cmd = 0;
3511 cmd->cmd_status_drv = DCMD_SUCCESS;
3512 wake_up(&instance->abort_cmd_wait_q);
3513 }
3514 }
3515
3516 static void
megasas_set_ld_removed_by_fw(struct megasas_instance * instance)3517 megasas_set_ld_removed_by_fw(struct megasas_instance *instance)
3518 {
3519 uint i;
3520
3521 for (i = 0; (i < MEGASAS_MAX_LD_IDS); i++) {
3522 if (instance->ld_ids_prev[i] != 0xff &&
3523 instance->ld_ids_from_raidmap[i] == 0xff) {
3524 if (megasas_dbg_lvl & LD_PD_DEBUG)
3525 dev_info(&instance->pdev->dev,
3526 "LD target ID %d removed from RAID map\n", i);
3527 instance->ld_tgtid_status[i] = LD_TARGET_ID_DELETED;
3528 }
3529 }
3530 }
3531
3532 /**
3533 * megasas_complete_cmd - Completes a command
3534 * @instance: Adapter soft state
3535 * @cmd: Command to be completed
3536 * @alt_status: If non-zero, use this value as status to
3537 * SCSI mid-layer instead of the value returned
3538 * by the FW. This should be used if caller wants
3539 * an alternate status (as in the case of aborted
3540 * commands)
3541 */
3542 void
megasas_complete_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd,u8 alt_status)3543 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
3544 u8 alt_status)
3545 {
3546 int exception = 0;
3547 struct megasas_header *hdr = &cmd->frame->hdr;
3548 unsigned long flags;
3549 struct fusion_context *fusion = instance->ctrl_context;
3550 u32 opcode, status;
3551
3552 /* flag for the retry reset */
3553 cmd->retry_for_fw_reset = 0;
3554
3555 if (cmd->scmd)
3556 cmd->scmd->SCp.ptr = NULL;
3557
3558 switch (hdr->cmd) {
3559 case MFI_CMD_INVALID:
3560 /* Some older 1068 controller FW may keep a pended
3561 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
3562 when booting the kdump kernel. Ignore this command to
3563 prevent a kernel panic on shutdown of the kdump kernel. */
3564 dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command "
3565 "completed\n");
3566 dev_warn(&instance->pdev->dev, "If you have a controller "
3567 "other than PERC5, please upgrade your firmware\n");
3568 break;
3569 case MFI_CMD_PD_SCSI_IO:
3570 case MFI_CMD_LD_SCSI_IO:
3571
3572 /*
3573 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
3574 * issued either through an IO path or an IOCTL path. If it
3575 * was via IOCTL, we will send it to internal completion.
3576 */
3577 if (cmd->sync_cmd) {
3578 cmd->sync_cmd = 0;
3579 megasas_complete_int_cmd(instance, cmd);
3580 break;
3581 }
3582 fallthrough;
3583
3584 case MFI_CMD_LD_READ:
3585 case MFI_CMD_LD_WRITE:
3586
3587 if (alt_status) {
3588 cmd->scmd->result = alt_status << 16;
3589 exception = 1;
3590 }
3591
3592 if (exception) {
3593
3594 atomic_dec(&instance->fw_outstanding);
3595
3596 scsi_dma_unmap(cmd->scmd);
3597 cmd->scmd->scsi_done(cmd->scmd);
3598 megasas_return_cmd(instance, cmd);
3599
3600 break;
3601 }
3602
3603 switch (hdr->cmd_status) {
3604
3605 case MFI_STAT_OK:
3606 cmd->scmd->result = DID_OK << 16;
3607 break;
3608
3609 case MFI_STAT_SCSI_IO_FAILED:
3610 case MFI_STAT_LD_INIT_IN_PROGRESS:
3611 cmd->scmd->result =
3612 (DID_ERROR << 16) | hdr->scsi_status;
3613 break;
3614
3615 case MFI_STAT_SCSI_DONE_WITH_ERROR:
3616
3617 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
3618
3619 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
3620 memset(cmd->scmd->sense_buffer, 0,
3621 SCSI_SENSE_BUFFERSIZE);
3622 memcpy(cmd->scmd->sense_buffer, cmd->sense,
3623 hdr->sense_len);
3624
3625 cmd->scmd->result |= DRIVER_SENSE << 24;
3626 }
3627
3628 break;
3629
3630 case MFI_STAT_LD_OFFLINE:
3631 case MFI_STAT_DEVICE_NOT_FOUND:
3632 cmd->scmd->result = DID_BAD_TARGET << 16;
3633 break;
3634
3635 default:
3636 dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n",
3637 hdr->cmd_status);
3638 cmd->scmd->result = DID_ERROR << 16;
3639 break;
3640 }
3641
3642 atomic_dec(&instance->fw_outstanding);
3643
3644 scsi_dma_unmap(cmd->scmd);
3645 cmd->scmd->scsi_done(cmd->scmd);
3646 megasas_return_cmd(instance, cmd);
3647
3648 break;
3649
3650 case MFI_CMD_SMP:
3651 case MFI_CMD_STP:
3652 case MFI_CMD_NVME:
3653 case MFI_CMD_TOOLBOX:
3654 megasas_complete_int_cmd(instance, cmd);
3655 break;
3656
3657 case MFI_CMD_DCMD:
3658 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
3659 /* Check for LD map update */
3660 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
3661 && (cmd->frame->dcmd.mbox.b[1] == 1)) {
3662 fusion->fast_path_io = 0;
3663 spin_lock_irqsave(instance->host->host_lock, flags);
3664 status = cmd->frame->hdr.cmd_status;
3665 instance->map_update_cmd = NULL;
3666 if (status != MFI_STAT_OK) {
3667 if (status != MFI_STAT_NOT_FOUND)
3668 dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n",
3669 cmd->frame->hdr.cmd_status);
3670 else {
3671 megasas_return_cmd(instance, cmd);
3672 spin_unlock_irqrestore(
3673 instance->host->host_lock,
3674 flags);
3675 break;
3676 }
3677 }
3678
3679 megasas_return_cmd(instance, cmd);
3680
3681 /*
3682 * Set fast path IO to ZERO.
3683 * Validate Map will set proper value.
3684 * Meanwhile all IOs will go as LD IO.
3685 */
3686 if (status == MFI_STAT_OK &&
3687 (MR_ValidateMapInfo(instance, (instance->map_id + 1)))) {
3688 instance->map_id++;
3689 fusion->fast_path_io = 1;
3690 } else {
3691 fusion->fast_path_io = 0;
3692 }
3693
3694 if (instance->adapter_type >= INVADER_SERIES)
3695 megasas_set_ld_removed_by_fw(instance);
3696
3697 megasas_sync_map_info(instance);
3698 spin_unlock_irqrestore(instance->host->host_lock,
3699 flags);
3700
3701 break;
3702 }
3703 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
3704 opcode == MR_DCMD_CTRL_EVENT_GET) {
3705 spin_lock_irqsave(&poll_aen_lock, flags);
3706 megasas_poll_wait_aen = 0;
3707 spin_unlock_irqrestore(&poll_aen_lock, flags);
3708 }
3709
3710 /* FW has an updated PD sequence */
3711 if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
3712 (cmd->frame->dcmd.mbox.b[0] == 1)) {
3713
3714 spin_lock_irqsave(instance->host->host_lock, flags);
3715 status = cmd->frame->hdr.cmd_status;
3716 instance->jbod_seq_cmd = NULL;
3717 megasas_return_cmd(instance, cmd);
3718
3719 if (status == MFI_STAT_OK) {
3720 instance->pd_seq_map_id++;
3721 /* Re-register a pd sync seq num cmd */
3722 if (megasas_sync_pd_seq_num(instance, true))
3723 instance->use_seqnum_jbod_fp = false;
3724 } else
3725 instance->use_seqnum_jbod_fp = false;
3726
3727 spin_unlock_irqrestore(instance->host->host_lock, flags);
3728 break;
3729 }
3730
3731 /*
3732 * See if got an event notification
3733 */
3734 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
3735 megasas_service_aen(instance, cmd);
3736 else
3737 megasas_complete_int_cmd(instance, cmd);
3738
3739 break;
3740
3741 case MFI_CMD_ABORT:
3742 /*
3743 * Cmd issued to abort another cmd returned
3744 */
3745 megasas_complete_abort(instance, cmd);
3746 break;
3747
3748 default:
3749 dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n",
3750 hdr->cmd);
3751 megasas_complete_int_cmd(instance, cmd);
3752 break;
3753 }
3754 }
3755
3756 /**
3757 * megasas_issue_pending_cmds_again - issue all pending cmds
3758 * in FW again because of the fw reset
3759 * @instance: Adapter soft state
3760 */
3761 static inline void
megasas_issue_pending_cmds_again(struct megasas_instance * instance)3762 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
3763 {
3764 struct megasas_cmd *cmd;
3765 struct list_head clist_local;
3766 union megasas_evt_class_locale class_locale;
3767 unsigned long flags;
3768 u32 seq_num;
3769
3770 INIT_LIST_HEAD(&clist_local);
3771 spin_lock_irqsave(&instance->hba_lock, flags);
3772 list_splice_init(&instance->internal_reset_pending_q, &clist_local);
3773 spin_unlock_irqrestore(&instance->hba_lock, flags);
3774
3775 while (!list_empty(&clist_local)) {
3776 cmd = list_entry((&clist_local)->next,
3777 struct megasas_cmd, list);
3778 list_del_init(&cmd->list);
3779
3780 if (cmd->sync_cmd || cmd->scmd) {
3781 dev_notice(&instance->pdev->dev, "command %p, %p:%d"
3782 "detected to be pending while HBA reset\n",
3783 cmd, cmd->scmd, cmd->sync_cmd);
3784
3785 cmd->retry_for_fw_reset++;
3786
3787 if (cmd->retry_for_fw_reset == 3) {
3788 dev_notice(&instance->pdev->dev, "cmd %p, %p:%d"
3789 "was tried multiple times during reset."
3790 "Shutting down the HBA\n",
3791 cmd, cmd->scmd, cmd->sync_cmd);
3792 instance->instancet->disable_intr(instance);
3793 atomic_set(&instance->fw_reset_no_pci_access, 1);
3794 megaraid_sas_kill_hba(instance);
3795 return;
3796 }
3797 }
3798
3799 if (cmd->sync_cmd == 1) {
3800 if (cmd->scmd) {
3801 dev_notice(&instance->pdev->dev, "unexpected"
3802 "cmd attached to internal command!\n");
3803 }
3804 dev_notice(&instance->pdev->dev, "%p synchronous cmd"
3805 "on the internal reset queue,"
3806 "issue it again.\n", cmd);
3807 cmd->cmd_status_drv = DCMD_INIT;
3808 instance->instancet->fire_cmd(instance,
3809 cmd->frame_phys_addr,
3810 0, instance->reg_set);
3811 } else if (cmd->scmd) {
3812 dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]"
3813 "detected on the internal queue, issue again.\n",
3814 cmd, cmd->scmd->cmnd[0]);
3815
3816 atomic_inc(&instance->fw_outstanding);
3817 instance->instancet->fire_cmd(instance,
3818 cmd->frame_phys_addr,
3819 cmd->frame_count-1, instance->reg_set);
3820 } else {
3821 dev_notice(&instance->pdev->dev, "%p unexpected cmd on the"
3822 "internal reset defer list while re-issue!!\n",
3823 cmd);
3824 }
3825 }
3826
3827 if (instance->aen_cmd) {
3828 dev_notice(&instance->pdev->dev, "aen_cmd in def process\n");
3829 megasas_return_cmd(instance, instance->aen_cmd);
3830
3831 instance->aen_cmd = NULL;
3832 }
3833
3834 /*
3835 * Initiate AEN (Asynchronous Event Notification)
3836 */
3837 seq_num = instance->last_seq_num;
3838 class_locale.members.reserved = 0;
3839 class_locale.members.locale = MR_EVT_LOCALE_ALL;
3840 class_locale.members.class = MR_EVT_CLASS_DEBUG;
3841
3842 megasas_register_aen(instance, seq_num, class_locale.word);
3843 }
3844
3845 /*
3846 * Move the internal reset pending commands to a deferred queue.
3847 *
3848 * We move the commands pending at internal reset time to a
3849 * pending queue. This queue would be flushed after successful
3850 * completion of the internal reset sequence. if the internal reset
3851 * did not complete in time, the kernel reset handler would flush
3852 * these commands.
3853 */
3854 static void
megasas_internal_reset_defer_cmds(struct megasas_instance * instance)3855 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
3856 {
3857 struct megasas_cmd *cmd;
3858 int i;
3859 u16 max_cmd = instance->max_fw_cmds;
3860 u32 defer_index;
3861 unsigned long flags;
3862
3863 defer_index = 0;
3864 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
3865 for (i = 0; i < max_cmd; i++) {
3866 cmd = instance->cmd_list[i];
3867 if (cmd->sync_cmd == 1 || cmd->scmd) {
3868 dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p"
3869 "on the defer queue as internal\n",
3870 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
3871
3872 if (!list_empty(&cmd->list)) {
3873 dev_notice(&instance->pdev->dev, "ERROR while"
3874 " moving this cmd:%p, %d %p, it was"
3875 "discovered on some list?\n",
3876 cmd, cmd->sync_cmd, cmd->scmd);
3877
3878 list_del_init(&cmd->list);
3879 }
3880 defer_index++;
3881 list_add_tail(&cmd->list,
3882 &instance->internal_reset_pending_q);
3883 }
3884 }
3885 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
3886 }
3887
3888
3889 static void
process_fw_state_change_wq(struct work_struct * work)3890 process_fw_state_change_wq(struct work_struct *work)
3891 {
3892 struct megasas_instance *instance =
3893 container_of(work, struct megasas_instance, work_init);
3894 u32 wait;
3895 unsigned long flags;
3896
3897 if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) {
3898 dev_notice(&instance->pdev->dev, "error, recovery st %x\n",
3899 atomic_read(&instance->adprecovery));
3900 return ;
3901 }
3902
3903 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
3904 dev_notice(&instance->pdev->dev, "FW detected to be in fault"
3905 "state, restarting it...\n");
3906
3907 instance->instancet->disable_intr(instance);
3908 atomic_set(&instance->fw_outstanding, 0);
3909
3910 atomic_set(&instance->fw_reset_no_pci_access, 1);
3911 instance->instancet->adp_reset(instance, instance->reg_set);
3912 atomic_set(&instance->fw_reset_no_pci_access, 0);
3913
3914 dev_notice(&instance->pdev->dev, "FW restarted successfully,"
3915 "initiating next stage...\n");
3916
3917 dev_notice(&instance->pdev->dev, "HBA recovery state machine,"
3918 "state 2 starting...\n");
3919
3920 /* waiting for about 20 second before start the second init */
3921 for (wait = 0; wait < 30; wait++) {
3922 msleep(1000);
3923 }
3924
3925 if (megasas_transition_to_ready(instance, 1)) {
3926 dev_notice(&instance->pdev->dev, "adapter not ready\n");
3927
3928 atomic_set(&instance->fw_reset_no_pci_access, 1);
3929 megaraid_sas_kill_hba(instance);
3930 return ;
3931 }
3932
3933 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
3934 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
3935 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
3936 ) {
3937 *instance->consumer = *instance->producer;
3938 } else {
3939 *instance->consumer = 0;
3940 *instance->producer = 0;
3941 }
3942
3943 megasas_issue_init_mfi(instance);
3944
3945 spin_lock_irqsave(&instance->hba_lock, flags);
3946 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
3947 spin_unlock_irqrestore(&instance->hba_lock, flags);
3948 instance->instancet->enable_intr(instance);
3949
3950 megasas_issue_pending_cmds_again(instance);
3951 instance->issuepend_done = 1;
3952 }
3953 }
3954
3955 /**
3956 * megasas_deplete_reply_queue - Processes all completed commands
3957 * @instance: Adapter soft state
3958 * @alt_status: Alternate status to be returned to
3959 * SCSI mid-layer instead of the status
3960 * returned by the FW
3961 * Note: this must be called with hba lock held
3962 */
3963 static int
megasas_deplete_reply_queue(struct megasas_instance * instance,u8 alt_status)3964 megasas_deplete_reply_queue(struct megasas_instance *instance,
3965 u8 alt_status)
3966 {
3967 u32 mfiStatus;
3968 u32 fw_state;
3969
3970 if ((mfiStatus = instance->instancet->check_reset(instance,
3971 instance->reg_set)) == 1) {
3972 return IRQ_HANDLED;
3973 }
3974
3975 mfiStatus = instance->instancet->clear_intr(instance);
3976 if (mfiStatus == 0) {
3977 /* Hardware may not set outbound_intr_status in MSI-X mode */
3978 if (!instance->msix_vectors)
3979 return IRQ_NONE;
3980 }
3981
3982 instance->mfiStatus = mfiStatus;
3983
3984 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
3985 fw_state = instance->instancet->read_fw_status_reg(
3986 instance) & MFI_STATE_MASK;
3987
3988 if (fw_state != MFI_STATE_FAULT) {
3989 dev_notice(&instance->pdev->dev, "fw state:%x\n",
3990 fw_state);
3991 }
3992
3993 if ((fw_state == MFI_STATE_FAULT) &&
3994 (instance->disableOnlineCtrlReset == 0)) {
3995 dev_notice(&instance->pdev->dev, "wait adp restart\n");
3996
3997 if ((instance->pdev->device ==
3998 PCI_DEVICE_ID_LSI_SAS1064R) ||
3999 (instance->pdev->device ==
4000 PCI_DEVICE_ID_DELL_PERC5) ||
4001 (instance->pdev->device ==
4002 PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
4003
4004 *instance->consumer =
4005 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
4006 }
4007
4008
4009 instance->instancet->disable_intr(instance);
4010 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4011 instance->issuepend_done = 0;
4012
4013 atomic_set(&instance->fw_outstanding, 0);
4014 megasas_internal_reset_defer_cmds(instance);
4015
4016 dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n",
4017 fw_state, atomic_read(&instance->adprecovery));
4018
4019 schedule_work(&instance->work_init);
4020 return IRQ_HANDLED;
4021
4022 } else {
4023 dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n",
4024 fw_state, instance->disableOnlineCtrlReset);
4025 }
4026 }
4027
4028 tasklet_schedule(&instance->isr_tasklet);
4029 return IRQ_HANDLED;
4030 }
4031
4032 /**
4033 * megasas_isr - isr entry point
4034 * @irq: IRQ number
4035 * @devp: IRQ context address
4036 */
megasas_isr(int irq,void * devp)4037 static irqreturn_t megasas_isr(int irq, void *devp)
4038 {
4039 struct megasas_irq_context *irq_context = devp;
4040 struct megasas_instance *instance = irq_context->instance;
4041 unsigned long flags;
4042 irqreturn_t rc;
4043
4044 if (atomic_read(&instance->fw_reset_no_pci_access))
4045 return IRQ_HANDLED;
4046
4047 spin_lock_irqsave(&instance->hba_lock, flags);
4048 rc = megasas_deplete_reply_queue(instance, DID_OK);
4049 spin_unlock_irqrestore(&instance->hba_lock, flags);
4050
4051 return rc;
4052 }
4053
4054 /**
4055 * megasas_transition_to_ready - Move the FW to READY state
4056 * @instance: Adapter soft state
4057 * @ocr: Adapter reset state
4058 *
4059 * During the initialization, FW passes can potentially be in any one of
4060 * several possible states. If the FW in operational, waiting-for-handshake
4061 * states, driver must take steps to bring it to ready state. Otherwise, it
4062 * has to wait for the ready state.
4063 */
4064 int
megasas_transition_to_ready(struct megasas_instance * instance,int ocr)4065 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
4066 {
4067 int i;
4068 u8 max_wait;
4069 u32 fw_state;
4070 u32 abs_state, curr_abs_state;
4071
4072 abs_state = instance->instancet->read_fw_status_reg(instance);
4073 fw_state = abs_state & MFI_STATE_MASK;
4074
4075 if (fw_state != MFI_STATE_READY)
4076 dev_info(&instance->pdev->dev, "Waiting for FW to come to ready"
4077 " state\n");
4078
4079 while (fw_state != MFI_STATE_READY) {
4080
4081 switch (fw_state) {
4082
4083 case MFI_STATE_FAULT:
4084 dev_printk(KERN_ERR, &instance->pdev->dev,
4085 "FW in FAULT state, Fault code:0x%x subcode:0x%x func:%s\n",
4086 abs_state & MFI_STATE_FAULT_CODE,
4087 abs_state & MFI_STATE_FAULT_SUBCODE, __func__);
4088 if (ocr) {
4089 max_wait = MEGASAS_RESET_WAIT_TIME;
4090 break;
4091 } else {
4092 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4093 megasas_dump_reg_set(instance->reg_set);
4094 return -ENODEV;
4095 }
4096
4097 case MFI_STATE_WAIT_HANDSHAKE:
4098 /*
4099 * Set the CLR bit in inbound doorbell
4100 */
4101 if ((instance->pdev->device ==
4102 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4103 (instance->pdev->device ==
4104 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4105 (instance->adapter_type != MFI_SERIES))
4106 writel(
4107 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4108 &instance->reg_set->doorbell);
4109 else
4110 writel(
4111 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4112 &instance->reg_set->inbound_doorbell);
4113
4114 max_wait = MEGASAS_RESET_WAIT_TIME;
4115 break;
4116
4117 case MFI_STATE_BOOT_MESSAGE_PENDING:
4118 if ((instance->pdev->device ==
4119 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4120 (instance->pdev->device ==
4121 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4122 (instance->adapter_type != MFI_SERIES))
4123 writel(MFI_INIT_HOTPLUG,
4124 &instance->reg_set->doorbell);
4125 else
4126 writel(MFI_INIT_HOTPLUG,
4127 &instance->reg_set->inbound_doorbell);
4128
4129 max_wait = MEGASAS_RESET_WAIT_TIME;
4130 break;
4131
4132 case MFI_STATE_OPERATIONAL:
4133 /*
4134 * Bring it to READY state; assuming max wait 10 secs
4135 */
4136 instance->instancet->disable_intr(instance);
4137 if ((instance->pdev->device ==
4138 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4139 (instance->pdev->device ==
4140 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4141 (instance->adapter_type != MFI_SERIES)) {
4142 writel(MFI_RESET_FLAGS,
4143 &instance->reg_set->doorbell);
4144
4145 if (instance->adapter_type != MFI_SERIES) {
4146 for (i = 0; i < (10 * 1000); i += 20) {
4147 if (megasas_readl(
4148 instance,
4149 &instance->
4150 reg_set->
4151 doorbell) & 1)
4152 msleep(20);
4153 else
4154 break;
4155 }
4156 }
4157 } else
4158 writel(MFI_RESET_FLAGS,
4159 &instance->reg_set->inbound_doorbell);
4160
4161 max_wait = MEGASAS_RESET_WAIT_TIME;
4162 break;
4163
4164 case MFI_STATE_UNDEFINED:
4165 /*
4166 * This state should not last for more than 2 seconds
4167 */
4168 max_wait = MEGASAS_RESET_WAIT_TIME;
4169 break;
4170
4171 case MFI_STATE_BB_INIT:
4172 max_wait = MEGASAS_RESET_WAIT_TIME;
4173 break;
4174
4175 case MFI_STATE_FW_INIT:
4176 max_wait = MEGASAS_RESET_WAIT_TIME;
4177 break;
4178
4179 case MFI_STATE_FW_INIT_2:
4180 max_wait = MEGASAS_RESET_WAIT_TIME;
4181 break;
4182
4183 case MFI_STATE_DEVICE_SCAN:
4184 max_wait = MEGASAS_RESET_WAIT_TIME;
4185 break;
4186
4187 case MFI_STATE_FLUSH_CACHE:
4188 max_wait = MEGASAS_RESET_WAIT_TIME;
4189 break;
4190
4191 default:
4192 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n",
4193 fw_state);
4194 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4195 megasas_dump_reg_set(instance->reg_set);
4196 return -ENODEV;
4197 }
4198
4199 /*
4200 * The cur_state should not last for more than max_wait secs
4201 */
4202 for (i = 0; i < max_wait * 50; i++) {
4203 curr_abs_state = instance->instancet->
4204 read_fw_status_reg(instance);
4205
4206 if (abs_state == curr_abs_state) {
4207 msleep(20);
4208 } else
4209 break;
4210 }
4211
4212 /*
4213 * Return error if fw_state hasn't changed after max_wait
4214 */
4215 if (curr_abs_state == abs_state) {
4216 dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed "
4217 "in %d secs\n", fw_state, max_wait);
4218 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4219 megasas_dump_reg_set(instance->reg_set);
4220 return -ENODEV;
4221 }
4222
4223 abs_state = curr_abs_state;
4224 fw_state = curr_abs_state & MFI_STATE_MASK;
4225 }
4226 dev_info(&instance->pdev->dev, "FW now in Ready state\n");
4227
4228 return 0;
4229 }
4230
4231 /**
4232 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
4233 * @instance: Adapter soft state
4234 */
megasas_teardown_frame_pool(struct megasas_instance * instance)4235 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
4236 {
4237 int i;
4238 u16 max_cmd = instance->max_mfi_cmds;
4239 struct megasas_cmd *cmd;
4240
4241 if (!instance->frame_dma_pool)
4242 return;
4243
4244 /*
4245 * Return all frames to pool
4246 */
4247 for (i = 0; i < max_cmd; i++) {
4248
4249 cmd = instance->cmd_list[i];
4250
4251 if (cmd->frame)
4252 dma_pool_free(instance->frame_dma_pool, cmd->frame,
4253 cmd->frame_phys_addr);
4254
4255 if (cmd->sense)
4256 dma_pool_free(instance->sense_dma_pool, cmd->sense,
4257 cmd->sense_phys_addr);
4258 }
4259
4260 /*
4261 * Now destroy the pool itself
4262 */
4263 dma_pool_destroy(instance->frame_dma_pool);
4264 dma_pool_destroy(instance->sense_dma_pool);
4265
4266 instance->frame_dma_pool = NULL;
4267 instance->sense_dma_pool = NULL;
4268 }
4269
4270 /**
4271 * megasas_create_frame_pool - Creates DMA pool for cmd frames
4272 * @instance: Adapter soft state
4273 *
4274 * Each command packet has an embedded DMA memory buffer that is used for
4275 * filling MFI frame and the SG list that immediately follows the frame. This
4276 * function creates those DMA memory buffers for each command packet by using
4277 * PCI pool facility.
4278 */
megasas_create_frame_pool(struct megasas_instance * instance)4279 static int megasas_create_frame_pool(struct megasas_instance *instance)
4280 {
4281 int i;
4282 u16 max_cmd;
4283 u32 frame_count;
4284 struct megasas_cmd *cmd;
4285
4286 max_cmd = instance->max_mfi_cmds;
4287
4288 /*
4289 * For MFI controllers.
4290 * max_num_sge = 60
4291 * max_sge_sz = 16 byte (sizeof megasas_sge_skinny)
4292 * Total 960 byte (15 MFI frame of 64 byte)
4293 *
4294 * Fusion adapter require only 3 extra frame.
4295 * max_num_sge = 16 (defined as MAX_IOCTL_SGE)
4296 * max_sge_sz = 12 byte (sizeof megasas_sge64)
4297 * Total 192 byte (3 MFI frame of 64 byte)
4298 */
4299 frame_count = (instance->adapter_type == MFI_SERIES) ?
4300 (15 + 1) : (3 + 1);
4301 instance->mfi_frame_size = MEGAMFI_FRAME_SIZE * frame_count;
4302 /*
4303 * Use DMA pool facility provided by PCI layer
4304 */
4305 instance->frame_dma_pool = dma_pool_create("megasas frame pool",
4306 &instance->pdev->dev,
4307 instance->mfi_frame_size, 256, 0);
4308
4309 if (!instance->frame_dma_pool) {
4310 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n");
4311 return -ENOMEM;
4312 }
4313
4314 instance->sense_dma_pool = dma_pool_create("megasas sense pool",
4315 &instance->pdev->dev, 128,
4316 4, 0);
4317
4318 if (!instance->sense_dma_pool) {
4319 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n");
4320
4321 dma_pool_destroy(instance->frame_dma_pool);
4322 instance->frame_dma_pool = NULL;
4323
4324 return -ENOMEM;
4325 }
4326
4327 /*
4328 * Allocate and attach a frame to each of the commands in cmd_list.
4329 * By making cmd->index as the context instead of the &cmd, we can
4330 * always use 32bit context regardless of the architecture
4331 */
4332 for (i = 0; i < max_cmd; i++) {
4333
4334 cmd = instance->cmd_list[i];
4335
4336 cmd->frame = dma_pool_zalloc(instance->frame_dma_pool,
4337 GFP_KERNEL, &cmd->frame_phys_addr);
4338
4339 cmd->sense = dma_pool_alloc(instance->sense_dma_pool,
4340 GFP_KERNEL, &cmd->sense_phys_addr);
4341
4342 /*
4343 * megasas_teardown_frame_pool() takes care of freeing
4344 * whatever has been allocated
4345 */
4346 if (!cmd->frame || !cmd->sense) {
4347 dev_printk(KERN_DEBUG, &instance->pdev->dev, "dma_pool_alloc failed\n");
4348 megasas_teardown_frame_pool(instance);
4349 return -ENOMEM;
4350 }
4351
4352 cmd->frame->io.context = cpu_to_le32(cmd->index);
4353 cmd->frame->io.pad_0 = 0;
4354 if ((instance->adapter_type == MFI_SERIES) && reset_devices)
4355 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
4356 }
4357
4358 return 0;
4359 }
4360
4361 /**
4362 * megasas_free_cmds - Free all the cmds in the free cmd pool
4363 * @instance: Adapter soft state
4364 */
megasas_free_cmds(struct megasas_instance * instance)4365 void megasas_free_cmds(struct megasas_instance *instance)
4366 {
4367 int i;
4368
4369 /* First free the MFI frame pool */
4370 megasas_teardown_frame_pool(instance);
4371
4372 /* Free all the commands in the cmd_list */
4373 for (i = 0; i < instance->max_mfi_cmds; i++)
4374
4375 kfree(instance->cmd_list[i]);
4376
4377 /* Free the cmd_list buffer itself */
4378 kfree(instance->cmd_list);
4379 instance->cmd_list = NULL;
4380
4381 INIT_LIST_HEAD(&instance->cmd_pool);
4382 }
4383
4384 /**
4385 * megasas_alloc_cmds - Allocates the command packets
4386 * @instance: Adapter soft state
4387 *
4388 * Each command that is issued to the FW, whether IO commands from the OS or
4389 * internal commands like IOCTLs, are wrapped in local data structure called
4390 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
4391 * the FW.
4392 *
4393 * Each frame has a 32-bit field called context (tag). This context is used
4394 * to get back the megasas_cmd from the frame when a frame gets completed in
4395 * the ISR. Typically the address of the megasas_cmd itself would be used as
4396 * the context. But we wanted to keep the differences between 32 and 64 bit
4397 * systems to the mininum. We always use 32 bit integers for the context. In
4398 * this driver, the 32 bit values are the indices into an array cmd_list.
4399 * This array is used only to look up the megasas_cmd given the context. The
4400 * free commands themselves are maintained in a linked list called cmd_pool.
4401 */
megasas_alloc_cmds(struct megasas_instance * instance)4402 int megasas_alloc_cmds(struct megasas_instance *instance)
4403 {
4404 int i;
4405 int j;
4406 u16 max_cmd;
4407 struct megasas_cmd *cmd;
4408
4409 max_cmd = instance->max_mfi_cmds;
4410
4411 /*
4412 * instance->cmd_list is an array of struct megasas_cmd pointers.
4413 * Allocate the dynamic array first and then allocate individual
4414 * commands.
4415 */
4416 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
4417
4418 if (!instance->cmd_list) {
4419 dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n");
4420 return -ENOMEM;
4421 }
4422
4423 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
4424
4425 for (i = 0; i < max_cmd; i++) {
4426 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
4427 GFP_KERNEL);
4428
4429 if (!instance->cmd_list[i]) {
4430
4431 for (j = 0; j < i; j++)
4432 kfree(instance->cmd_list[j]);
4433
4434 kfree(instance->cmd_list);
4435 instance->cmd_list = NULL;
4436
4437 return -ENOMEM;
4438 }
4439 }
4440
4441 for (i = 0; i < max_cmd; i++) {
4442 cmd = instance->cmd_list[i];
4443 memset(cmd, 0, sizeof(struct megasas_cmd));
4444 cmd->index = i;
4445 cmd->scmd = NULL;
4446 cmd->instance = instance;
4447
4448 list_add_tail(&cmd->list, &instance->cmd_pool);
4449 }
4450
4451 /*
4452 * Create a frame pool and assign one frame to each cmd
4453 */
4454 if (megasas_create_frame_pool(instance)) {
4455 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n");
4456 megasas_free_cmds(instance);
4457 return -ENOMEM;
4458 }
4459
4460 return 0;
4461 }
4462
4463 /*
4464 * dcmd_timeout_ocr_possible - Check if OCR is possible based on Driver/FW state.
4465 * @instance: Adapter soft state
4466 *
4467 * Return 0 for only Fusion adapter, if driver load/unload is not in progress
4468 * or FW is not under OCR.
4469 */
4470 inline int
dcmd_timeout_ocr_possible(struct megasas_instance * instance)4471 dcmd_timeout_ocr_possible(struct megasas_instance *instance) {
4472
4473 if (instance->adapter_type == MFI_SERIES)
4474 return KILL_ADAPTER;
4475 else if (instance->unload ||
4476 test_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE,
4477 &instance->reset_flags))
4478 return IGNORE_TIMEOUT;
4479 else
4480 return INITIATE_OCR;
4481 }
4482
4483 static void
megasas_get_pd_info(struct megasas_instance * instance,struct scsi_device * sdev)4484 megasas_get_pd_info(struct megasas_instance *instance, struct scsi_device *sdev)
4485 {
4486 int ret;
4487 struct megasas_cmd *cmd;
4488 struct megasas_dcmd_frame *dcmd;
4489
4490 struct MR_PRIV_DEVICE *mr_device_priv_data;
4491 u16 device_id = 0;
4492
4493 device_id = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id;
4494 cmd = megasas_get_cmd(instance);
4495
4496 if (!cmd) {
4497 dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__);
4498 return;
4499 }
4500
4501 dcmd = &cmd->frame->dcmd;
4502
4503 memset(instance->pd_info, 0, sizeof(*instance->pd_info));
4504 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4505
4506 dcmd->mbox.s[0] = cpu_to_le16(device_id);
4507 dcmd->cmd = MFI_CMD_DCMD;
4508 dcmd->cmd_status = 0xFF;
4509 dcmd->sge_count = 1;
4510 dcmd->flags = MFI_FRAME_DIR_READ;
4511 dcmd->timeout = 0;
4512 dcmd->pad_0 = 0;
4513 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO));
4514 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO);
4515
4516 megasas_set_dma_settings(instance, dcmd, instance->pd_info_h,
4517 sizeof(struct MR_PD_INFO));
4518
4519 if ((instance->adapter_type != MFI_SERIES) &&
4520 !instance->mask_interrupts)
4521 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4522 else
4523 ret = megasas_issue_polled(instance, cmd);
4524
4525 switch (ret) {
4526 case DCMD_SUCCESS:
4527 mr_device_priv_data = sdev->hostdata;
4528 le16_to_cpus((u16 *)&instance->pd_info->state.ddf.pdType);
4529 mr_device_priv_data->interface_type =
4530 instance->pd_info->state.ddf.pdType.intf;
4531 break;
4532
4533 case DCMD_TIMEOUT:
4534
4535 switch (dcmd_timeout_ocr_possible(instance)) {
4536 case INITIATE_OCR:
4537 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4538 mutex_unlock(&instance->reset_mutex);
4539 megasas_reset_fusion(instance->host,
4540 MFI_IO_TIMEOUT_OCR);
4541 mutex_lock(&instance->reset_mutex);
4542 break;
4543 case KILL_ADAPTER:
4544 megaraid_sas_kill_hba(instance);
4545 break;
4546 case IGNORE_TIMEOUT:
4547 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4548 __func__, __LINE__);
4549 break;
4550 }
4551
4552 break;
4553 }
4554
4555 if (ret != DCMD_TIMEOUT)
4556 megasas_return_cmd(instance, cmd);
4557
4558 return;
4559 }
4560 /*
4561 * megasas_get_pd_list_info - Returns FW's pd_list structure
4562 * @instance: Adapter soft state
4563 * @pd_list: pd_list structure
4564 *
4565 * Issues an internal command (DCMD) to get the FW's controller PD
4566 * list structure. This information is mainly used to find out SYSTEM
4567 * supported by the FW.
4568 */
4569 static int
megasas_get_pd_list(struct megasas_instance * instance)4570 megasas_get_pd_list(struct megasas_instance *instance)
4571 {
4572 int ret = 0, pd_index = 0;
4573 struct megasas_cmd *cmd;
4574 struct megasas_dcmd_frame *dcmd;
4575 struct MR_PD_LIST *ci;
4576 struct MR_PD_ADDRESS *pd_addr;
4577
4578 if (instance->pd_list_not_supported) {
4579 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4580 "not supported by firmware\n");
4581 return ret;
4582 }
4583
4584 ci = instance->pd_list_buf;
4585
4586 cmd = megasas_get_cmd(instance);
4587
4588 if (!cmd) {
4589 dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n");
4590 return -ENOMEM;
4591 }
4592
4593 dcmd = &cmd->frame->dcmd;
4594
4595 memset(ci, 0, sizeof(*ci));
4596 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4597
4598 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
4599 dcmd->mbox.b[1] = 0;
4600 dcmd->cmd = MFI_CMD_DCMD;
4601 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4602 dcmd->sge_count = 1;
4603 dcmd->flags = MFI_FRAME_DIR_READ;
4604 dcmd->timeout = 0;
4605 dcmd->pad_0 = 0;
4606 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
4607 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
4608
4609 megasas_set_dma_settings(instance, dcmd, instance->pd_list_buf_h,
4610 (MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)));
4611
4612 if ((instance->adapter_type != MFI_SERIES) &&
4613 !instance->mask_interrupts)
4614 ret = megasas_issue_blocked_cmd(instance, cmd,
4615 MFI_IO_TIMEOUT_SECS);
4616 else
4617 ret = megasas_issue_polled(instance, cmd);
4618
4619 switch (ret) {
4620 case DCMD_FAILED:
4621 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4622 "failed/not supported by firmware\n");
4623
4624 if (instance->adapter_type != MFI_SERIES)
4625 megaraid_sas_kill_hba(instance);
4626 else
4627 instance->pd_list_not_supported = 1;
4628 break;
4629 case DCMD_TIMEOUT:
4630
4631 switch (dcmd_timeout_ocr_possible(instance)) {
4632 case INITIATE_OCR:
4633 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4634 /*
4635 * DCMD failed from AEN path.
4636 * AEN path already hold reset_mutex to avoid PCI access
4637 * while OCR is in progress.
4638 */
4639 mutex_unlock(&instance->reset_mutex);
4640 megasas_reset_fusion(instance->host,
4641 MFI_IO_TIMEOUT_OCR);
4642 mutex_lock(&instance->reset_mutex);
4643 break;
4644 case KILL_ADAPTER:
4645 megaraid_sas_kill_hba(instance);
4646 break;
4647 case IGNORE_TIMEOUT:
4648 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n",
4649 __func__, __LINE__);
4650 break;
4651 }
4652
4653 break;
4654
4655 case DCMD_SUCCESS:
4656 pd_addr = ci->addr;
4657 if (megasas_dbg_lvl & LD_PD_DEBUG)
4658 dev_info(&instance->pdev->dev, "%s, sysPD count: 0x%x\n",
4659 __func__, le32_to_cpu(ci->count));
4660
4661 if ((le32_to_cpu(ci->count) >
4662 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL)))
4663 break;
4664
4665 memset(instance->local_pd_list, 0,
4666 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4667
4668 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
4669 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid =
4670 le16_to_cpu(pd_addr->deviceId);
4671 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType =
4672 pd_addr->scsiDevType;
4673 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState =
4674 MR_PD_STATE_SYSTEM;
4675 if (megasas_dbg_lvl & LD_PD_DEBUG)
4676 dev_info(&instance->pdev->dev,
4677 "PD%d: targetID: 0x%03x deviceType:0x%x\n",
4678 pd_index, le16_to_cpu(pd_addr->deviceId),
4679 pd_addr->scsiDevType);
4680 pd_addr++;
4681 }
4682
4683 memcpy(instance->pd_list, instance->local_pd_list,
4684 sizeof(instance->pd_list));
4685 break;
4686
4687 }
4688
4689 if (ret != DCMD_TIMEOUT)
4690 megasas_return_cmd(instance, cmd);
4691
4692 return ret;
4693 }
4694
4695 /*
4696 * megasas_get_ld_list_info - Returns FW's ld_list structure
4697 * @instance: Adapter soft state
4698 * @ld_list: ld_list structure
4699 *
4700 * Issues an internal command (DCMD) to get the FW's controller PD
4701 * list structure. This information is mainly used to find out SYSTEM
4702 * supported by the FW.
4703 */
4704 static int
megasas_get_ld_list(struct megasas_instance * instance)4705 megasas_get_ld_list(struct megasas_instance *instance)
4706 {
4707 int ret = 0, ld_index = 0, ids = 0;
4708 struct megasas_cmd *cmd;
4709 struct megasas_dcmd_frame *dcmd;
4710 struct MR_LD_LIST *ci;
4711 dma_addr_t ci_h = 0;
4712 u32 ld_count;
4713
4714 ci = instance->ld_list_buf;
4715 ci_h = instance->ld_list_buf_h;
4716
4717 cmd = megasas_get_cmd(instance);
4718
4719 if (!cmd) {
4720 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n");
4721 return -ENOMEM;
4722 }
4723
4724 dcmd = &cmd->frame->dcmd;
4725
4726 memset(ci, 0, sizeof(*ci));
4727 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4728
4729 if (instance->supportmax256vd)
4730 dcmd->mbox.b[0] = 1;
4731 dcmd->cmd = MFI_CMD_DCMD;
4732 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4733 dcmd->sge_count = 1;
4734 dcmd->flags = MFI_FRAME_DIR_READ;
4735 dcmd->timeout = 0;
4736 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
4737 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
4738 dcmd->pad_0 = 0;
4739
4740 megasas_set_dma_settings(instance, dcmd, ci_h,
4741 sizeof(struct MR_LD_LIST));
4742
4743 if ((instance->adapter_type != MFI_SERIES) &&
4744 !instance->mask_interrupts)
4745 ret = megasas_issue_blocked_cmd(instance, cmd,
4746 MFI_IO_TIMEOUT_SECS);
4747 else
4748 ret = megasas_issue_polled(instance, cmd);
4749
4750 ld_count = le32_to_cpu(ci->ldCount);
4751
4752 switch (ret) {
4753 case DCMD_FAILED:
4754 megaraid_sas_kill_hba(instance);
4755 break;
4756 case DCMD_TIMEOUT:
4757
4758 switch (dcmd_timeout_ocr_possible(instance)) {
4759 case INITIATE_OCR:
4760 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4761 /*
4762 * DCMD failed from AEN path.
4763 * AEN path already hold reset_mutex to avoid PCI access
4764 * while OCR is in progress.
4765 */
4766 mutex_unlock(&instance->reset_mutex);
4767 megasas_reset_fusion(instance->host,
4768 MFI_IO_TIMEOUT_OCR);
4769 mutex_lock(&instance->reset_mutex);
4770 break;
4771 case KILL_ADAPTER:
4772 megaraid_sas_kill_hba(instance);
4773 break;
4774 case IGNORE_TIMEOUT:
4775 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4776 __func__, __LINE__);
4777 break;
4778 }
4779
4780 break;
4781
4782 case DCMD_SUCCESS:
4783 if (megasas_dbg_lvl & LD_PD_DEBUG)
4784 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4785 __func__, ld_count);
4786
4787 if (ld_count > instance->fw_supported_vd_count)
4788 break;
4789
4790 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4791
4792 for (ld_index = 0; ld_index < ld_count; ld_index++) {
4793 if (ci->ldList[ld_index].state != 0) {
4794 ids = ci->ldList[ld_index].ref.targetId;
4795 instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId;
4796 if (megasas_dbg_lvl & LD_PD_DEBUG)
4797 dev_info(&instance->pdev->dev,
4798 "LD%d: targetID: 0x%03x\n",
4799 ld_index, ids);
4800 }
4801 }
4802
4803 break;
4804 }
4805
4806 if (ret != DCMD_TIMEOUT)
4807 megasas_return_cmd(instance, cmd);
4808
4809 return ret;
4810 }
4811
4812 /**
4813 * megasas_ld_list_query - Returns FW's ld_list structure
4814 * @instance: Adapter soft state
4815 * @query_type: ld_list structure type
4816 *
4817 * Issues an internal command (DCMD) to get the FW's controller PD
4818 * list structure. This information is mainly used to find out SYSTEM
4819 * supported by the FW.
4820 */
4821 static int
megasas_ld_list_query(struct megasas_instance * instance,u8 query_type)4822 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
4823 {
4824 int ret = 0, ld_index = 0, ids = 0;
4825 struct megasas_cmd *cmd;
4826 struct megasas_dcmd_frame *dcmd;
4827 struct MR_LD_TARGETID_LIST *ci;
4828 dma_addr_t ci_h = 0;
4829 u32 tgtid_count;
4830
4831 ci = instance->ld_targetid_list_buf;
4832 ci_h = instance->ld_targetid_list_buf_h;
4833
4834 cmd = megasas_get_cmd(instance);
4835
4836 if (!cmd) {
4837 dev_warn(&instance->pdev->dev,
4838 "megasas_ld_list_query: Failed to get cmd\n");
4839 return -ENOMEM;
4840 }
4841
4842 dcmd = &cmd->frame->dcmd;
4843
4844 memset(ci, 0, sizeof(*ci));
4845 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4846
4847 dcmd->mbox.b[0] = query_type;
4848 if (instance->supportmax256vd)
4849 dcmd->mbox.b[2] = 1;
4850
4851 dcmd->cmd = MFI_CMD_DCMD;
4852 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4853 dcmd->sge_count = 1;
4854 dcmd->flags = MFI_FRAME_DIR_READ;
4855 dcmd->timeout = 0;
4856 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4857 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
4858 dcmd->pad_0 = 0;
4859
4860 megasas_set_dma_settings(instance, dcmd, ci_h,
4861 sizeof(struct MR_LD_TARGETID_LIST));
4862
4863 if ((instance->adapter_type != MFI_SERIES) &&
4864 !instance->mask_interrupts)
4865 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4866 else
4867 ret = megasas_issue_polled(instance, cmd);
4868
4869 switch (ret) {
4870 case DCMD_FAILED:
4871 dev_info(&instance->pdev->dev,
4872 "DCMD not supported by firmware - %s %d\n",
4873 __func__, __LINE__);
4874 ret = megasas_get_ld_list(instance);
4875 break;
4876 case DCMD_TIMEOUT:
4877 switch (dcmd_timeout_ocr_possible(instance)) {
4878 case INITIATE_OCR:
4879 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4880 /*
4881 * DCMD failed from AEN path.
4882 * AEN path already hold reset_mutex to avoid PCI access
4883 * while OCR is in progress.
4884 */
4885 mutex_unlock(&instance->reset_mutex);
4886 megasas_reset_fusion(instance->host,
4887 MFI_IO_TIMEOUT_OCR);
4888 mutex_lock(&instance->reset_mutex);
4889 break;
4890 case KILL_ADAPTER:
4891 megaraid_sas_kill_hba(instance);
4892 break;
4893 case IGNORE_TIMEOUT:
4894 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4895 __func__, __LINE__);
4896 break;
4897 }
4898
4899 break;
4900 case DCMD_SUCCESS:
4901 tgtid_count = le32_to_cpu(ci->count);
4902
4903 if (megasas_dbg_lvl & LD_PD_DEBUG)
4904 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4905 __func__, tgtid_count);
4906
4907 if ((tgtid_count > (instance->fw_supported_vd_count)))
4908 break;
4909
4910 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4911 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
4912 ids = ci->targetId[ld_index];
4913 instance->ld_ids[ids] = ci->targetId[ld_index];
4914 if (megasas_dbg_lvl & LD_PD_DEBUG)
4915 dev_info(&instance->pdev->dev, "LD%d: targetID: 0x%03x\n",
4916 ld_index, ci->targetId[ld_index]);
4917 }
4918
4919 break;
4920 }
4921
4922 if (ret != DCMD_TIMEOUT)
4923 megasas_return_cmd(instance, cmd);
4924
4925 return ret;
4926 }
4927
4928 /**
4929 * dcmd.opcode - MR_DCMD_CTRL_DEVICE_LIST_GET
4930 * dcmd.mbox - reserved
4931 * dcmd.sge IN - ptr to return MR_HOST_DEVICE_LIST structure
4932 * Desc: This DCMD will return the combined device list
4933 * Status: MFI_STAT_OK - List returned successfully
4934 * MFI_STAT_INVALID_CMD - Firmware support for the feature has been
4935 * disabled
4936 * @instance: Adapter soft state
4937 * @is_probe: Driver probe check
4938 * Return: 0 if DCMD succeeded
4939 * non-zero if failed
4940 */
4941 static int
megasas_host_device_list_query(struct megasas_instance * instance,bool is_probe)4942 megasas_host_device_list_query(struct megasas_instance *instance,
4943 bool is_probe)
4944 {
4945 int ret, i, target_id;
4946 struct megasas_cmd *cmd;
4947 struct megasas_dcmd_frame *dcmd;
4948 struct MR_HOST_DEVICE_LIST *ci;
4949 u32 count;
4950 dma_addr_t ci_h;
4951
4952 ci = instance->host_device_list_buf;
4953 ci_h = instance->host_device_list_buf_h;
4954
4955 cmd = megasas_get_cmd(instance);
4956
4957 if (!cmd) {
4958 dev_warn(&instance->pdev->dev,
4959 "%s: failed to get cmd\n",
4960 __func__);
4961 return -ENOMEM;
4962 }
4963
4964 dcmd = &cmd->frame->dcmd;
4965
4966 memset(ci, 0, sizeof(*ci));
4967 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4968
4969 dcmd->mbox.b[0] = is_probe ? 0 : 1;
4970 dcmd->cmd = MFI_CMD_DCMD;
4971 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4972 dcmd->sge_count = 1;
4973 dcmd->flags = MFI_FRAME_DIR_READ;
4974 dcmd->timeout = 0;
4975 dcmd->pad_0 = 0;
4976 dcmd->data_xfer_len = cpu_to_le32(HOST_DEVICE_LIST_SZ);
4977 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_DEVICE_LIST_GET);
4978
4979 megasas_set_dma_settings(instance, dcmd, ci_h, HOST_DEVICE_LIST_SZ);
4980
4981 if (!instance->mask_interrupts) {
4982 ret = megasas_issue_blocked_cmd(instance, cmd,
4983 MFI_IO_TIMEOUT_SECS);
4984 } else {
4985 ret = megasas_issue_polled(instance, cmd);
4986 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4987 }
4988
4989 switch (ret) {
4990 case DCMD_SUCCESS:
4991 /* Fill the internal pd_list and ld_ids array based on
4992 * targetIds returned by FW
4993 */
4994 count = le32_to_cpu(ci->count);
4995
4996 if (count > (MEGASAS_MAX_PD + MAX_LOGICAL_DRIVES_EXT))
4997 break;
4998
4999 if (megasas_dbg_lvl & LD_PD_DEBUG)
5000 dev_info(&instance->pdev->dev, "%s, Device count: 0x%x\n",
5001 __func__, count);
5002
5003 memset(instance->local_pd_list, 0,
5004 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
5005 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
5006 for (i = 0; i < count; i++) {
5007 target_id = le16_to_cpu(ci->host_device_list[i].target_id);
5008 if (ci->host_device_list[i].flags.u.bits.is_sys_pd) {
5009 instance->local_pd_list[target_id].tid = target_id;
5010 instance->local_pd_list[target_id].driveType =
5011 ci->host_device_list[i].scsi_type;
5012 instance->local_pd_list[target_id].driveState =
5013 MR_PD_STATE_SYSTEM;
5014 if (megasas_dbg_lvl & LD_PD_DEBUG)
5015 dev_info(&instance->pdev->dev,
5016 "Device %d: PD targetID: 0x%03x deviceType:0x%x\n",
5017 i, target_id, ci->host_device_list[i].scsi_type);
5018 } else {
5019 instance->ld_ids[target_id] = target_id;
5020 if (megasas_dbg_lvl & LD_PD_DEBUG)
5021 dev_info(&instance->pdev->dev,
5022 "Device %d: LD targetID: 0x%03x\n",
5023 i, target_id);
5024 }
5025 }
5026
5027 memcpy(instance->pd_list, instance->local_pd_list,
5028 sizeof(instance->pd_list));
5029 break;
5030
5031 case DCMD_TIMEOUT:
5032 switch (dcmd_timeout_ocr_possible(instance)) {
5033 case INITIATE_OCR:
5034 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5035 mutex_unlock(&instance->reset_mutex);
5036 megasas_reset_fusion(instance->host,
5037 MFI_IO_TIMEOUT_OCR);
5038 mutex_lock(&instance->reset_mutex);
5039 break;
5040 case KILL_ADAPTER:
5041 megaraid_sas_kill_hba(instance);
5042 break;
5043 case IGNORE_TIMEOUT:
5044 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5045 __func__, __LINE__);
5046 break;
5047 }
5048 break;
5049 case DCMD_FAILED:
5050 dev_err(&instance->pdev->dev,
5051 "%s: MR_DCMD_CTRL_DEVICE_LIST_GET failed\n",
5052 __func__);
5053 break;
5054 }
5055
5056 if (ret != DCMD_TIMEOUT)
5057 megasas_return_cmd(instance, cmd);
5058
5059 return ret;
5060 }
5061
5062 /*
5063 * megasas_update_ext_vd_details : Update details w.r.t Extended VD
5064 * instance : Controller's instance
5065 */
megasas_update_ext_vd_details(struct megasas_instance * instance)5066 static void megasas_update_ext_vd_details(struct megasas_instance *instance)
5067 {
5068 struct fusion_context *fusion;
5069 u32 ventura_map_sz = 0;
5070
5071 fusion = instance->ctrl_context;
5072 /* For MFI based controllers return dummy success */
5073 if (!fusion)
5074 return;
5075
5076 instance->supportmax256vd =
5077 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs;
5078 /* Below is additional check to address future FW enhancement */
5079 if (instance->ctrl_info_buf->max_lds > 64)
5080 instance->supportmax256vd = 1;
5081
5082 instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
5083 * MEGASAS_MAX_DEV_PER_CHANNEL;
5084 instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS
5085 * MEGASAS_MAX_DEV_PER_CHANNEL;
5086 if (instance->supportmax256vd) {
5087 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT;
5088 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5089 } else {
5090 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
5091 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5092 }
5093
5094 dev_info(&instance->pdev->dev,
5095 "FW provided supportMaxExtLDs: %d\tmax_lds: %d\n",
5096 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs ? 1 : 0,
5097 instance->ctrl_info_buf->max_lds);
5098
5099 if (instance->max_raid_mapsize) {
5100 ventura_map_sz = instance->max_raid_mapsize *
5101 MR_MIN_MAP_SIZE; /* 64k */
5102 fusion->current_map_sz = ventura_map_sz;
5103 fusion->max_map_sz = ventura_map_sz;
5104 } else {
5105 fusion->old_map_sz = sizeof(struct MR_FW_RAID_MAP) +
5106 (sizeof(struct MR_LD_SPAN_MAP) *
5107 (instance->fw_supported_vd_count - 1));
5108 fusion->new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT);
5109
5110 fusion->max_map_sz =
5111 max(fusion->old_map_sz, fusion->new_map_sz);
5112
5113 if (instance->supportmax256vd)
5114 fusion->current_map_sz = fusion->new_map_sz;
5115 else
5116 fusion->current_map_sz = fusion->old_map_sz;
5117 }
5118 /* irrespective of FW raid maps, driver raid map is constant */
5119 fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP_ALL);
5120 }
5121
5122 /*
5123 * dcmd.opcode - MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES
5124 * dcmd.hdr.length - number of bytes to read
5125 * dcmd.sge - Ptr to MR_SNAPDUMP_PROPERTIES
5126 * Desc: Fill in snapdump properties
5127 * Status: MFI_STAT_OK- Command successful
5128 */
megasas_get_snapdump_properties(struct megasas_instance * instance)5129 void megasas_get_snapdump_properties(struct megasas_instance *instance)
5130 {
5131 int ret = 0;
5132 struct megasas_cmd *cmd;
5133 struct megasas_dcmd_frame *dcmd;
5134 struct MR_SNAPDUMP_PROPERTIES *ci;
5135 dma_addr_t ci_h = 0;
5136
5137 ci = instance->snapdump_prop;
5138 ci_h = instance->snapdump_prop_h;
5139
5140 if (!ci)
5141 return;
5142
5143 cmd = megasas_get_cmd(instance);
5144
5145 if (!cmd) {
5146 dev_dbg(&instance->pdev->dev, "Failed to get a free cmd\n");
5147 return;
5148 }
5149
5150 dcmd = &cmd->frame->dcmd;
5151
5152 memset(ci, 0, sizeof(*ci));
5153 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5154
5155 dcmd->cmd = MFI_CMD_DCMD;
5156 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5157 dcmd->sge_count = 1;
5158 dcmd->flags = MFI_FRAME_DIR_READ;
5159 dcmd->timeout = 0;
5160 dcmd->pad_0 = 0;
5161 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_SNAPDUMP_PROPERTIES));
5162 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES);
5163
5164 megasas_set_dma_settings(instance, dcmd, ci_h,
5165 sizeof(struct MR_SNAPDUMP_PROPERTIES));
5166
5167 if (!instance->mask_interrupts) {
5168 ret = megasas_issue_blocked_cmd(instance, cmd,
5169 MFI_IO_TIMEOUT_SECS);
5170 } else {
5171 ret = megasas_issue_polled(instance, cmd);
5172 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5173 }
5174
5175 switch (ret) {
5176 case DCMD_SUCCESS:
5177 instance->snapdump_wait_time =
5178 min_t(u8, ci->trigger_min_num_sec_before_ocr,
5179 MEGASAS_MAX_SNAP_DUMP_WAIT_TIME);
5180 break;
5181
5182 case DCMD_TIMEOUT:
5183 switch (dcmd_timeout_ocr_possible(instance)) {
5184 case INITIATE_OCR:
5185 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5186 mutex_unlock(&instance->reset_mutex);
5187 megasas_reset_fusion(instance->host,
5188 MFI_IO_TIMEOUT_OCR);
5189 mutex_lock(&instance->reset_mutex);
5190 break;
5191 case KILL_ADAPTER:
5192 megaraid_sas_kill_hba(instance);
5193 break;
5194 case IGNORE_TIMEOUT:
5195 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5196 __func__, __LINE__);
5197 break;
5198 }
5199 }
5200
5201 if (ret != DCMD_TIMEOUT)
5202 megasas_return_cmd(instance, cmd);
5203 }
5204
5205 /**
5206 * megasas_get_controller_info - Returns FW's controller structure
5207 * @instance: Adapter soft state
5208 *
5209 * Issues an internal command (DCMD) to get the FW's controller structure.
5210 * This information is mainly used to find out the maximum IO transfer per
5211 * command supported by the FW.
5212 */
5213 int
megasas_get_ctrl_info(struct megasas_instance * instance)5214 megasas_get_ctrl_info(struct megasas_instance *instance)
5215 {
5216 int ret = 0;
5217 struct megasas_cmd *cmd;
5218 struct megasas_dcmd_frame *dcmd;
5219 struct megasas_ctrl_info *ci;
5220 dma_addr_t ci_h = 0;
5221
5222 ci = instance->ctrl_info_buf;
5223 ci_h = instance->ctrl_info_buf_h;
5224
5225 cmd = megasas_get_cmd(instance);
5226
5227 if (!cmd) {
5228 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n");
5229 return -ENOMEM;
5230 }
5231
5232 dcmd = &cmd->frame->dcmd;
5233
5234 memset(ci, 0, sizeof(*ci));
5235 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5236
5237 dcmd->cmd = MFI_CMD_DCMD;
5238 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5239 dcmd->sge_count = 1;
5240 dcmd->flags = MFI_FRAME_DIR_READ;
5241 dcmd->timeout = 0;
5242 dcmd->pad_0 = 0;
5243 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
5244 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
5245 dcmd->mbox.b[0] = 1;
5246
5247 megasas_set_dma_settings(instance, dcmd, ci_h,
5248 sizeof(struct megasas_ctrl_info));
5249
5250 if ((instance->adapter_type != MFI_SERIES) &&
5251 !instance->mask_interrupts) {
5252 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5253 } else {
5254 ret = megasas_issue_polled(instance, cmd);
5255 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5256 }
5257
5258 switch (ret) {
5259 case DCMD_SUCCESS:
5260 /* Save required controller information in
5261 * CPU endianness format.
5262 */
5263 le32_to_cpus((u32 *)&ci->properties.OnOffProperties);
5264 le16_to_cpus((u16 *)&ci->properties.on_off_properties2);
5265 le32_to_cpus((u32 *)&ci->adapterOperations2);
5266 le32_to_cpus((u32 *)&ci->adapterOperations3);
5267 le16_to_cpus((u16 *)&ci->adapter_operations4);
5268 le32_to_cpus((u32 *)&ci->adapter_operations5);
5269
5270 /* Update the latest Ext VD info.
5271 * From Init path, store current firmware details.
5272 * From OCR path, detect any firmware properties changes.
5273 * in case of Firmware upgrade without system reboot.
5274 */
5275 megasas_update_ext_vd_details(instance);
5276 instance->support_seqnum_jbod_fp =
5277 ci->adapterOperations3.useSeqNumJbodFP;
5278 instance->support_morethan256jbod =
5279 ci->adapter_operations4.support_pd_map_target_id;
5280 instance->support_nvme_passthru =
5281 ci->adapter_operations4.support_nvme_passthru;
5282 instance->support_pci_lane_margining =
5283 ci->adapter_operations5.support_pci_lane_margining;
5284 instance->task_abort_tmo = ci->TaskAbortTO;
5285 instance->max_reset_tmo = ci->MaxResetTO;
5286
5287 /*Check whether controller is iMR or MR */
5288 instance->is_imr = (ci->memory_size ? 0 : 1);
5289
5290 instance->snapdump_wait_time =
5291 (ci->properties.on_off_properties2.enable_snap_dump ?
5292 MEGASAS_DEFAULT_SNAP_DUMP_WAIT_TIME : 0);
5293
5294 instance->enable_fw_dev_list =
5295 ci->properties.on_off_properties2.enable_fw_dev_list;
5296
5297 dev_info(&instance->pdev->dev,
5298 "controller type\t: %s(%dMB)\n",
5299 instance->is_imr ? "iMR" : "MR",
5300 le16_to_cpu(ci->memory_size));
5301
5302 instance->disableOnlineCtrlReset =
5303 ci->properties.OnOffProperties.disableOnlineCtrlReset;
5304 instance->secure_jbod_support =
5305 ci->adapterOperations3.supportSecurityonJBOD;
5306 dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n",
5307 instance->disableOnlineCtrlReset ? "Disabled" : "Enabled");
5308 dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n",
5309 instance->secure_jbod_support ? "Yes" : "No");
5310 dev_info(&instance->pdev->dev, "NVMe passthru support\t: %s\n",
5311 instance->support_nvme_passthru ? "Yes" : "No");
5312 dev_info(&instance->pdev->dev,
5313 "FW provided TM TaskAbort/Reset timeout\t: %d secs/%d secs\n",
5314 instance->task_abort_tmo, instance->max_reset_tmo);
5315 dev_info(&instance->pdev->dev, "JBOD sequence map support\t: %s\n",
5316 instance->support_seqnum_jbod_fp ? "Yes" : "No");
5317 dev_info(&instance->pdev->dev, "PCI Lane Margining support\t: %s\n",
5318 instance->support_pci_lane_margining ? "Yes" : "No");
5319
5320 break;
5321
5322 case DCMD_TIMEOUT:
5323 switch (dcmd_timeout_ocr_possible(instance)) {
5324 case INITIATE_OCR:
5325 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5326 mutex_unlock(&instance->reset_mutex);
5327 megasas_reset_fusion(instance->host,
5328 MFI_IO_TIMEOUT_OCR);
5329 mutex_lock(&instance->reset_mutex);
5330 break;
5331 case KILL_ADAPTER:
5332 megaraid_sas_kill_hba(instance);
5333 break;
5334 case IGNORE_TIMEOUT:
5335 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5336 __func__, __LINE__);
5337 break;
5338 }
5339 break;
5340 case DCMD_FAILED:
5341 megaraid_sas_kill_hba(instance);
5342 break;
5343
5344 }
5345
5346 if (ret != DCMD_TIMEOUT)
5347 megasas_return_cmd(instance, cmd);
5348
5349 return ret;
5350 }
5351
5352 /*
5353 * megasas_set_crash_dump_params - Sends address of crash dump DMA buffer
5354 * to firmware
5355 *
5356 * @instance: Adapter soft state
5357 * @crash_buf_state - tell FW to turn ON/OFF crash dump feature
5358 MR_CRASH_BUF_TURN_OFF = 0
5359 MR_CRASH_BUF_TURN_ON = 1
5360 * @return 0 on success non-zero on failure.
5361 * Issues an internal command (DCMD) to set parameters for crash dump feature.
5362 * Driver will send address of crash dump DMA buffer and set mbox to tell FW
5363 * that driver supports crash dump feature. This DCMD will be sent only if
5364 * crash dump feature is supported by the FW.
5365 *
5366 */
megasas_set_crash_dump_params(struct megasas_instance * instance,u8 crash_buf_state)5367 int megasas_set_crash_dump_params(struct megasas_instance *instance,
5368 u8 crash_buf_state)
5369 {
5370 int ret = 0;
5371 struct megasas_cmd *cmd;
5372 struct megasas_dcmd_frame *dcmd;
5373
5374 cmd = megasas_get_cmd(instance);
5375
5376 if (!cmd) {
5377 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n");
5378 return -ENOMEM;
5379 }
5380
5381
5382 dcmd = &cmd->frame->dcmd;
5383
5384 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5385 dcmd->mbox.b[0] = crash_buf_state;
5386 dcmd->cmd = MFI_CMD_DCMD;
5387 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5388 dcmd->sge_count = 1;
5389 dcmd->flags = MFI_FRAME_DIR_NONE;
5390 dcmd->timeout = 0;
5391 dcmd->pad_0 = 0;
5392 dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
5393 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
5394
5395 megasas_set_dma_settings(instance, dcmd, instance->crash_dump_h,
5396 CRASH_DMA_BUF_SIZE);
5397
5398 if ((instance->adapter_type != MFI_SERIES) &&
5399 !instance->mask_interrupts)
5400 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5401 else
5402 ret = megasas_issue_polled(instance, cmd);
5403
5404 if (ret == DCMD_TIMEOUT) {
5405 switch (dcmd_timeout_ocr_possible(instance)) {
5406 case INITIATE_OCR:
5407 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5408 megasas_reset_fusion(instance->host,
5409 MFI_IO_TIMEOUT_OCR);
5410 break;
5411 case KILL_ADAPTER:
5412 megaraid_sas_kill_hba(instance);
5413 break;
5414 case IGNORE_TIMEOUT:
5415 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5416 __func__, __LINE__);
5417 break;
5418 }
5419 } else
5420 megasas_return_cmd(instance, cmd);
5421
5422 return ret;
5423 }
5424
5425 /**
5426 * megasas_issue_init_mfi - Initializes the FW
5427 * @instance: Adapter soft state
5428 *
5429 * Issues the INIT MFI cmd
5430 */
5431 static int
megasas_issue_init_mfi(struct megasas_instance * instance)5432 megasas_issue_init_mfi(struct megasas_instance *instance)
5433 {
5434 __le32 context;
5435 struct megasas_cmd *cmd;
5436 struct megasas_init_frame *init_frame;
5437 struct megasas_init_queue_info *initq_info;
5438 dma_addr_t init_frame_h;
5439 dma_addr_t initq_info_h;
5440
5441 /*
5442 * Prepare a init frame. Note the init frame points to queue info
5443 * structure. Each frame has SGL allocated after first 64 bytes. For
5444 * this frame - since we don't need any SGL - we use SGL's space as
5445 * queue info structure
5446 *
5447 * We will not get a NULL command below. We just created the pool.
5448 */
5449 cmd = megasas_get_cmd(instance);
5450
5451 init_frame = (struct megasas_init_frame *)cmd->frame;
5452 initq_info = (struct megasas_init_queue_info *)
5453 ((unsigned long)init_frame + 64);
5454
5455 init_frame_h = cmd->frame_phys_addr;
5456 initq_info_h = init_frame_h + 64;
5457
5458 context = init_frame->context;
5459 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
5460 memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
5461 init_frame->context = context;
5462
5463 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
5464 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
5465
5466 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
5467 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
5468
5469 init_frame->cmd = MFI_CMD_INIT;
5470 init_frame->cmd_status = MFI_STAT_INVALID_STATUS;
5471 init_frame->queue_info_new_phys_addr_lo =
5472 cpu_to_le32(lower_32_bits(initq_info_h));
5473 init_frame->queue_info_new_phys_addr_hi =
5474 cpu_to_le32(upper_32_bits(initq_info_h));
5475
5476 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
5477
5478 /*
5479 * disable the intr before firing the init frame to FW
5480 */
5481 instance->instancet->disable_intr(instance);
5482
5483 /*
5484 * Issue the init frame in polled mode
5485 */
5486
5487 if (megasas_issue_polled(instance, cmd)) {
5488 dev_err(&instance->pdev->dev, "Failed to init firmware\n");
5489 megasas_return_cmd(instance, cmd);
5490 goto fail_fw_init;
5491 }
5492
5493 megasas_return_cmd(instance, cmd);
5494
5495 return 0;
5496
5497 fail_fw_init:
5498 return -EINVAL;
5499 }
5500
5501 static u32
megasas_init_adapter_mfi(struct megasas_instance * instance)5502 megasas_init_adapter_mfi(struct megasas_instance *instance)
5503 {
5504 u32 context_sz;
5505 u32 reply_q_sz;
5506
5507 /*
5508 * Get various operational parameters from status register
5509 */
5510 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(instance) & 0x00FFFF;
5511 /*
5512 * Reduce the max supported cmds by 1. This is to ensure that the
5513 * reply_q_sz (1 more than the max cmd that driver may send)
5514 * does not exceed max cmds that the FW can support
5515 */
5516 instance->max_fw_cmds = instance->max_fw_cmds-1;
5517 instance->max_mfi_cmds = instance->max_fw_cmds;
5518 instance->max_num_sge = (instance->instancet->read_fw_status_reg(instance) & 0xFF0000) >>
5519 0x10;
5520 /*
5521 * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands
5522 * are reserved for IOCTL + driver's internal DCMDs.
5523 */
5524 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
5525 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
5526 instance->max_scsi_cmds = (instance->max_fw_cmds -
5527 MEGASAS_SKINNY_INT_CMDS);
5528 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
5529 } else {
5530 instance->max_scsi_cmds = (instance->max_fw_cmds -
5531 MEGASAS_INT_CMDS);
5532 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS));
5533 }
5534
5535 instance->cur_can_queue = instance->max_scsi_cmds;
5536 /*
5537 * Create a pool of commands
5538 */
5539 if (megasas_alloc_cmds(instance))
5540 goto fail_alloc_cmds;
5541
5542 /*
5543 * Allocate memory for reply queue. Length of reply queue should
5544 * be _one_ more than the maximum commands handled by the firmware.
5545 *
5546 * Note: When FW completes commands, it places corresponding contex
5547 * values in this circular reply queue. This circular queue is a fairly
5548 * typical producer-consumer queue. FW is the producer (of completed
5549 * commands) and the driver is the consumer.
5550 */
5551 context_sz = sizeof(u32);
5552 reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
5553
5554 instance->reply_queue = dma_alloc_coherent(&instance->pdev->dev,
5555 reply_q_sz, &instance->reply_queue_h, GFP_KERNEL);
5556
5557 if (!instance->reply_queue) {
5558 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n");
5559 goto fail_reply_queue;
5560 }
5561
5562 if (megasas_issue_init_mfi(instance))
5563 goto fail_fw_init;
5564
5565 if (megasas_get_ctrl_info(instance)) {
5566 dev_err(&instance->pdev->dev, "(%d): Could get controller info "
5567 "Fail from %s %d\n", instance->unique_id,
5568 __func__, __LINE__);
5569 goto fail_fw_init;
5570 }
5571
5572 instance->fw_support_ieee = 0;
5573 instance->fw_support_ieee =
5574 (instance->instancet->read_fw_status_reg(instance) &
5575 0x04000000);
5576
5577 dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d",
5578 instance->fw_support_ieee);
5579
5580 if (instance->fw_support_ieee)
5581 instance->flag_ieee = 1;
5582
5583 return 0;
5584
5585 fail_fw_init:
5586
5587 dma_free_coherent(&instance->pdev->dev, reply_q_sz,
5588 instance->reply_queue, instance->reply_queue_h);
5589 fail_reply_queue:
5590 megasas_free_cmds(instance);
5591
5592 fail_alloc_cmds:
5593 return 1;
5594 }
5595
5596 static
megasas_setup_irq_poll(struct megasas_instance * instance)5597 void megasas_setup_irq_poll(struct megasas_instance *instance)
5598 {
5599 struct megasas_irq_context *irq_ctx;
5600 u32 count, i;
5601
5602 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5603
5604 /* Initialize IRQ poll */
5605 for (i = 0; i < count; i++) {
5606 irq_ctx = &instance->irq_context[i];
5607 irq_ctx->os_irq = pci_irq_vector(instance->pdev, i);
5608 irq_ctx->irq_poll_scheduled = false;
5609 irq_poll_init(&irq_ctx->irqpoll,
5610 instance->threshold_reply_count,
5611 megasas_irqpoll);
5612 }
5613 }
5614
5615 /*
5616 * megasas_setup_irqs_ioapic - register legacy interrupts.
5617 * @instance: Adapter soft state
5618 *
5619 * Do not enable interrupt, only setup ISRs.
5620 *
5621 * Return 0 on success.
5622 */
5623 static int
megasas_setup_irqs_ioapic(struct megasas_instance * instance)5624 megasas_setup_irqs_ioapic(struct megasas_instance *instance)
5625 {
5626 struct pci_dev *pdev;
5627
5628 pdev = instance->pdev;
5629 instance->irq_context[0].instance = instance;
5630 instance->irq_context[0].MSIxIndex = 0;
5631 snprintf(instance->irq_context->name, MEGASAS_MSIX_NAME_LEN, "%s%u",
5632 "megasas", instance->host->host_no);
5633 if (request_irq(pci_irq_vector(pdev, 0),
5634 instance->instancet->service_isr, IRQF_SHARED,
5635 instance->irq_context->name, &instance->irq_context[0])) {
5636 dev_err(&instance->pdev->dev,
5637 "Failed to register IRQ from %s %d\n",
5638 __func__, __LINE__);
5639 return -1;
5640 }
5641 instance->perf_mode = MR_LATENCY_PERF_MODE;
5642 instance->low_latency_index_start = 0;
5643 return 0;
5644 }
5645
5646 /**
5647 * megasas_setup_irqs_msix - register MSI-x interrupts.
5648 * @instance: Adapter soft state
5649 * @is_probe: Driver probe check
5650 *
5651 * Do not enable interrupt, only setup ISRs.
5652 *
5653 * Return 0 on success.
5654 */
5655 static int
megasas_setup_irqs_msix(struct megasas_instance * instance,u8 is_probe)5656 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe)
5657 {
5658 int i, j;
5659 struct pci_dev *pdev;
5660
5661 pdev = instance->pdev;
5662
5663 /* Try MSI-x */
5664 for (i = 0; i < instance->msix_vectors; i++) {
5665 instance->irq_context[i].instance = instance;
5666 instance->irq_context[i].MSIxIndex = i;
5667 snprintf(instance->irq_context[i].name, MEGASAS_MSIX_NAME_LEN, "%s%u-msix%u",
5668 "megasas", instance->host->host_no, i);
5669 if (request_irq(pci_irq_vector(pdev, i),
5670 instance->instancet->service_isr, 0, instance->irq_context[i].name,
5671 &instance->irq_context[i])) {
5672 dev_err(&instance->pdev->dev,
5673 "Failed to register IRQ for vector %d.\n", i);
5674 for (j = 0; j < i; j++) {
5675 if (j < instance->low_latency_index_start)
5676 irq_set_affinity_hint(
5677 pci_irq_vector(pdev, j), NULL);
5678 free_irq(pci_irq_vector(pdev, j),
5679 &instance->irq_context[j]);
5680 }
5681 /* Retry irq register for IO_APIC*/
5682 instance->msix_vectors = 0;
5683 instance->msix_load_balance = false;
5684 if (is_probe) {
5685 pci_free_irq_vectors(instance->pdev);
5686 return megasas_setup_irqs_ioapic(instance);
5687 } else {
5688 return -1;
5689 }
5690 }
5691 }
5692
5693 return 0;
5694 }
5695
5696 /*
5697 * megasas_destroy_irqs- unregister interrupts.
5698 * @instance: Adapter soft state
5699 * return: void
5700 */
5701 static void
megasas_destroy_irqs(struct megasas_instance * instance)5702 megasas_destroy_irqs(struct megasas_instance *instance) {
5703
5704 int i;
5705 int count;
5706 struct megasas_irq_context *irq_ctx;
5707
5708 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5709 if (instance->adapter_type != MFI_SERIES) {
5710 for (i = 0; i < count; i++) {
5711 irq_ctx = &instance->irq_context[i];
5712 irq_poll_disable(&irq_ctx->irqpoll);
5713 }
5714 }
5715
5716 if (instance->msix_vectors)
5717 for (i = 0; i < instance->msix_vectors; i++) {
5718 if (i < instance->low_latency_index_start)
5719 irq_set_affinity_hint(
5720 pci_irq_vector(instance->pdev, i), NULL);
5721 free_irq(pci_irq_vector(instance->pdev, i),
5722 &instance->irq_context[i]);
5723 }
5724 else
5725 free_irq(pci_irq_vector(instance->pdev, 0),
5726 &instance->irq_context[0]);
5727 }
5728
5729 /**
5730 * megasas_setup_jbod_map - setup jbod map for FP seq_number.
5731 * @instance: Adapter soft state
5732 *
5733 * Return 0 on success.
5734 */
5735 void
megasas_setup_jbod_map(struct megasas_instance * instance)5736 megasas_setup_jbod_map(struct megasas_instance *instance)
5737 {
5738 int i;
5739 struct fusion_context *fusion = instance->ctrl_context;
5740 u32 pd_seq_map_sz;
5741
5742 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
5743 (sizeof(struct MR_PD_CFG_SEQ) * (MAX_PHYSICAL_DEVICES - 1));
5744
5745 instance->use_seqnum_jbod_fp =
5746 instance->support_seqnum_jbod_fp;
5747 if (reset_devices || !fusion ||
5748 !instance->support_seqnum_jbod_fp) {
5749 dev_info(&instance->pdev->dev,
5750 "JBOD sequence map is disabled %s %d\n",
5751 __func__, __LINE__);
5752 instance->use_seqnum_jbod_fp = false;
5753 return;
5754 }
5755
5756 if (fusion->pd_seq_sync[0])
5757 goto skip_alloc;
5758
5759 for (i = 0; i < JBOD_MAPS_COUNT; i++) {
5760 fusion->pd_seq_sync[i] = dma_alloc_coherent
5761 (&instance->pdev->dev, pd_seq_map_sz,
5762 &fusion->pd_seq_phys[i], GFP_KERNEL);
5763 if (!fusion->pd_seq_sync[i]) {
5764 dev_err(&instance->pdev->dev,
5765 "Failed to allocate memory from %s %d\n",
5766 __func__, __LINE__);
5767 if (i == 1) {
5768 dma_free_coherent(&instance->pdev->dev,
5769 pd_seq_map_sz, fusion->pd_seq_sync[0],
5770 fusion->pd_seq_phys[0]);
5771 fusion->pd_seq_sync[0] = NULL;
5772 }
5773 instance->use_seqnum_jbod_fp = false;
5774 return;
5775 }
5776 }
5777
5778 skip_alloc:
5779 if (!megasas_sync_pd_seq_num(instance, false) &&
5780 !megasas_sync_pd_seq_num(instance, true))
5781 instance->use_seqnum_jbod_fp = true;
5782 else
5783 instance->use_seqnum_jbod_fp = false;
5784 }
5785
megasas_setup_reply_map(struct megasas_instance * instance)5786 static void megasas_setup_reply_map(struct megasas_instance *instance)
5787 {
5788 const struct cpumask *mask;
5789 unsigned int queue, cpu, low_latency_index_start;
5790
5791 low_latency_index_start = instance->low_latency_index_start;
5792
5793 for (queue = low_latency_index_start; queue < instance->msix_vectors; queue++) {
5794 mask = pci_irq_get_affinity(instance->pdev, queue);
5795 if (!mask)
5796 goto fallback;
5797
5798 for_each_cpu(cpu, mask)
5799 instance->reply_map[cpu] = queue;
5800 }
5801 return;
5802
5803 fallback:
5804 queue = low_latency_index_start;
5805 for_each_possible_cpu(cpu) {
5806 instance->reply_map[cpu] = queue;
5807 if (queue == (instance->msix_vectors - 1))
5808 queue = low_latency_index_start;
5809 else
5810 queue++;
5811 }
5812 }
5813
5814 /**
5815 * megasas_get_device_list - Get the PD and LD device list from FW.
5816 * @instance: Adapter soft state
5817 * @return: Success or failure
5818 *
5819 * Issue DCMDs to Firmware to get the PD and LD list.
5820 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
5821 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
5822 */
5823 static
megasas_get_device_list(struct megasas_instance * instance)5824 int megasas_get_device_list(struct megasas_instance *instance)
5825 {
5826 memset(instance->pd_list, 0,
5827 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
5828 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
5829
5830 if (instance->enable_fw_dev_list) {
5831 if (megasas_host_device_list_query(instance, true))
5832 return FAILED;
5833 } else {
5834 if (megasas_get_pd_list(instance) < 0) {
5835 dev_err(&instance->pdev->dev, "failed to get PD list\n");
5836 return FAILED;
5837 }
5838
5839 if (megasas_ld_list_query(instance,
5840 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) {
5841 dev_err(&instance->pdev->dev, "failed to get LD list\n");
5842 return FAILED;
5843 }
5844 }
5845
5846 return SUCCESS;
5847 }
5848
5849 /**
5850 * megasas_set_high_iops_queue_affinity_hint - Set affinity hint for high IOPS queues
5851 * @instance: Adapter soft state
5852 * return: void
5853 */
5854 static inline void
megasas_set_high_iops_queue_affinity_hint(struct megasas_instance * instance)5855 megasas_set_high_iops_queue_affinity_hint(struct megasas_instance *instance)
5856 {
5857 int i;
5858 int local_numa_node;
5859
5860 if (instance->perf_mode == MR_BALANCED_PERF_MODE) {
5861 local_numa_node = dev_to_node(&instance->pdev->dev);
5862
5863 for (i = 0; i < instance->low_latency_index_start; i++)
5864 irq_set_affinity_hint(pci_irq_vector(instance->pdev, i),
5865 cpumask_of_node(local_numa_node));
5866 }
5867 }
5868
5869 static int
__megasas_alloc_irq_vectors(struct megasas_instance * instance)5870 __megasas_alloc_irq_vectors(struct megasas_instance *instance)
5871 {
5872 int i, irq_flags;
5873 struct irq_affinity desc = { .pre_vectors = instance->low_latency_index_start };
5874 struct irq_affinity *descp = &desc;
5875
5876 irq_flags = PCI_IRQ_MSIX;
5877
5878 if (instance->smp_affinity_enable)
5879 irq_flags |= PCI_IRQ_AFFINITY;
5880 else
5881 descp = NULL;
5882
5883 i = pci_alloc_irq_vectors_affinity(instance->pdev,
5884 instance->low_latency_index_start,
5885 instance->msix_vectors, irq_flags, descp);
5886
5887 return i;
5888 }
5889
5890 /**
5891 * megasas_alloc_irq_vectors - Allocate IRQ vectors/enable MSI-x vectors
5892 * @instance: Adapter soft state
5893 * return: void
5894 */
5895 static void
megasas_alloc_irq_vectors(struct megasas_instance * instance)5896 megasas_alloc_irq_vectors(struct megasas_instance *instance)
5897 {
5898 int i;
5899 unsigned int num_msix_req;
5900
5901 i = __megasas_alloc_irq_vectors(instance);
5902
5903 if ((instance->perf_mode == MR_BALANCED_PERF_MODE) &&
5904 (i != instance->msix_vectors)) {
5905 if (instance->msix_vectors)
5906 pci_free_irq_vectors(instance->pdev);
5907 /* Disable Balanced IOPS mode and try realloc vectors */
5908 instance->perf_mode = MR_LATENCY_PERF_MODE;
5909 instance->low_latency_index_start = 1;
5910 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
5911
5912 instance->msix_vectors = min(num_msix_req,
5913 instance->msix_vectors);
5914
5915 i = __megasas_alloc_irq_vectors(instance);
5916
5917 }
5918
5919 dev_info(&instance->pdev->dev,
5920 "requested/available msix %d/%d\n", instance->msix_vectors, i);
5921
5922 if (i > 0)
5923 instance->msix_vectors = i;
5924 else
5925 instance->msix_vectors = 0;
5926
5927 if (instance->smp_affinity_enable)
5928 megasas_set_high_iops_queue_affinity_hint(instance);
5929 }
5930
5931 /**
5932 * megasas_init_fw - Initializes the FW
5933 * @instance: Adapter soft state
5934 *
5935 * This is the main function for initializing firmware
5936 */
5937
megasas_init_fw(struct megasas_instance * instance)5938 static int megasas_init_fw(struct megasas_instance *instance)
5939 {
5940 u32 max_sectors_1;
5941 u32 max_sectors_2, tmp_sectors, msix_enable;
5942 u32 scratch_pad_1, scratch_pad_2, scratch_pad_3, status_reg;
5943 resource_size_t base_addr;
5944 void *base_addr_phys;
5945 struct megasas_ctrl_info *ctrl_info = NULL;
5946 unsigned long bar_list;
5947 int i, j, loop;
5948 struct IOV_111 *iovPtr;
5949 struct fusion_context *fusion;
5950 bool intr_coalescing;
5951 unsigned int num_msix_req;
5952 u16 lnksta, speed;
5953
5954 fusion = instance->ctrl_context;
5955
5956 /* Find first memory bar */
5957 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
5958 instance->bar = find_first_bit(&bar_list, BITS_PER_LONG);
5959 if (pci_request_selected_regions(instance->pdev, 1<<instance->bar,
5960 "megasas: LSI")) {
5961 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n");
5962 return -EBUSY;
5963 }
5964
5965 base_addr = pci_resource_start(instance->pdev, instance->bar);
5966 instance->reg_set = ioremap(base_addr, 8192);
5967
5968 if (!instance->reg_set) {
5969 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n");
5970 goto fail_ioremap;
5971 }
5972
5973 base_addr_phys = &base_addr;
5974 dev_printk(KERN_DEBUG, &instance->pdev->dev,
5975 "BAR:0x%lx BAR's base_addr(phys):%pa mapped virt_addr:0x%p\n",
5976 instance->bar, base_addr_phys, instance->reg_set);
5977
5978 if (instance->adapter_type != MFI_SERIES)
5979 instance->instancet = &megasas_instance_template_fusion;
5980 else {
5981 switch (instance->pdev->device) {
5982 case PCI_DEVICE_ID_LSI_SAS1078R:
5983 case PCI_DEVICE_ID_LSI_SAS1078DE:
5984 instance->instancet = &megasas_instance_template_ppc;
5985 break;
5986 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
5987 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
5988 instance->instancet = &megasas_instance_template_gen2;
5989 break;
5990 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
5991 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
5992 instance->instancet = &megasas_instance_template_skinny;
5993 break;
5994 case PCI_DEVICE_ID_LSI_SAS1064R:
5995 case PCI_DEVICE_ID_DELL_PERC5:
5996 default:
5997 instance->instancet = &megasas_instance_template_xscale;
5998 instance->pd_list_not_supported = 1;
5999 break;
6000 }
6001 }
6002
6003 if (megasas_transition_to_ready(instance, 0)) {
6004 dev_info(&instance->pdev->dev,
6005 "Failed to transition controller to ready from %s!\n",
6006 __func__);
6007 if (instance->adapter_type != MFI_SERIES) {
6008 status_reg = instance->instancet->read_fw_status_reg(
6009 instance);
6010 if (status_reg & MFI_RESET_ADAPTER) {
6011 if (megasas_adp_reset_wait_for_ready
6012 (instance, true, 0) == FAILED)
6013 goto fail_ready_state;
6014 } else {
6015 goto fail_ready_state;
6016 }
6017 } else {
6018 atomic_set(&instance->fw_reset_no_pci_access, 1);
6019 instance->instancet->adp_reset
6020 (instance, instance->reg_set);
6021 atomic_set(&instance->fw_reset_no_pci_access, 0);
6022
6023 /*waiting for about 30 second before retry*/
6024 ssleep(30);
6025
6026 if (megasas_transition_to_ready(instance, 0))
6027 goto fail_ready_state;
6028 }
6029
6030 dev_info(&instance->pdev->dev,
6031 "FW restarted successfully from %s!\n",
6032 __func__);
6033 }
6034
6035 megasas_init_ctrl_params(instance);
6036
6037 if (megasas_set_dma_mask(instance))
6038 goto fail_ready_state;
6039
6040 if (megasas_alloc_ctrl_mem(instance))
6041 goto fail_alloc_dma_buf;
6042
6043 if (megasas_alloc_ctrl_dma_buffers(instance))
6044 goto fail_alloc_dma_buf;
6045
6046 fusion = instance->ctrl_context;
6047
6048 if (instance->adapter_type >= VENTURA_SERIES) {
6049 scratch_pad_2 =
6050 megasas_readl(instance,
6051 &instance->reg_set->outbound_scratch_pad_2);
6052 instance->max_raid_mapsize = ((scratch_pad_2 >>
6053 MR_MAX_RAID_MAP_SIZE_OFFSET_SHIFT) &
6054 MR_MAX_RAID_MAP_SIZE_MASK);
6055 }
6056
6057 instance->enable_sdev_max_qd = enable_sdev_max_qd;
6058
6059 switch (instance->adapter_type) {
6060 case VENTURA_SERIES:
6061 fusion->pcie_bw_limitation = true;
6062 break;
6063 case AERO_SERIES:
6064 fusion->r56_div_offload = true;
6065 break;
6066 default:
6067 break;
6068 }
6069
6070 /* Check if MSI-X is supported while in ready state */
6071 msix_enable = (instance->instancet->read_fw_status_reg(instance) &
6072 0x4000000) >> 0x1a;
6073 if (msix_enable && !msix_disable) {
6074
6075 scratch_pad_1 = megasas_readl
6076 (instance, &instance->reg_set->outbound_scratch_pad_1);
6077 /* Check max MSI-X vectors */
6078 if (fusion) {
6079 if (instance->adapter_type == THUNDERBOLT_SERIES) {
6080 /* Thunderbolt Series*/
6081 instance->msix_vectors = (scratch_pad_1
6082 & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
6083 } else {
6084 instance->msix_vectors = ((scratch_pad_1
6085 & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
6086 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
6087
6088 /*
6089 * For Invader series, > 8 MSI-x vectors
6090 * supported by FW/HW implies combined
6091 * reply queue mode is enabled.
6092 * For Ventura series, > 16 MSI-x vectors
6093 * supported by FW/HW implies combined
6094 * reply queue mode is enabled.
6095 */
6096 switch (instance->adapter_type) {
6097 case INVADER_SERIES:
6098 if (instance->msix_vectors > 8)
6099 instance->msix_combined = true;
6100 break;
6101 case AERO_SERIES:
6102 case VENTURA_SERIES:
6103 if (instance->msix_vectors > 16)
6104 instance->msix_combined = true;
6105 break;
6106 }
6107
6108 if (rdpq_enable)
6109 instance->is_rdpq = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ?
6110 1 : 0;
6111
6112 if (instance->adapter_type >= INVADER_SERIES &&
6113 !instance->msix_combined) {
6114 instance->msix_load_balance = true;
6115 instance->smp_affinity_enable = false;
6116 }
6117
6118 /* Save 1-15 reply post index address to local memory
6119 * Index 0 is already saved from reg offset
6120 * MPI2_REPLY_POST_HOST_INDEX_OFFSET
6121 */
6122 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
6123 instance->reply_post_host_index_addr[loop] =
6124 (u32 __iomem *)
6125 ((u8 __iomem *)instance->reg_set +
6126 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
6127 + (loop * 0x10));
6128 }
6129 }
6130
6131 dev_info(&instance->pdev->dev,
6132 "firmware supports msix\t: (%d)",
6133 instance->msix_vectors);
6134 if (msix_vectors)
6135 instance->msix_vectors = min(msix_vectors,
6136 instance->msix_vectors);
6137 } else /* MFI adapters */
6138 instance->msix_vectors = 1;
6139
6140
6141 /*
6142 * For Aero (if some conditions are met), driver will configure a
6143 * few additional reply queues with interrupt coalescing enabled.
6144 * These queues with interrupt coalescing enabled are called
6145 * High IOPS queues and rest of reply queues (based on number of
6146 * logical CPUs) are termed as Low latency queues.
6147 *
6148 * Total Number of reply queues = High IOPS queues + low latency queues
6149 *
6150 * For rest of fusion adapters, 1 additional reply queue will be
6151 * reserved for management commands, rest of reply queues
6152 * (based on number of logical CPUs) will be used for IOs and
6153 * referenced as IO queues.
6154 * Total Number of reply queues = 1 + IO queues
6155 *
6156 * MFI adapters supports single MSI-x so single reply queue
6157 * will be used for IO and management commands.
6158 */
6159
6160 intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ?
6161 true : false;
6162 if (intr_coalescing &&
6163 (num_online_cpus() >= MR_HIGH_IOPS_QUEUE_COUNT) &&
6164 (instance->msix_vectors == MEGASAS_MAX_MSIX_QUEUES))
6165 instance->perf_mode = MR_BALANCED_PERF_MODE;
6166 else
6167 instance->perf_mode = MR_LATENCY_PERF_MODE;
6168
6169
6170 if (instance->adapter_type == AERO_SERIES) {
6171 pcie_capability_read_word(instance->pdev, PCI_EXP_LNKSTA, &lnksta);
6172 speed = lnksta & PCI_EXP_LNKSTA_CLS;
6173
6174 /*
6175 * For Aero, if PCIe link speed is <16 GT/s, then driver should operate
6176 * in latency perf mode and enable R1 PCI bandwidth algorithm
6177 */
6178 if (speed < 0x4) {
6179 instance->perf_mode = MR_LATENCY_PERF_MODE;
6180 fusion->pcie_bw_limitation = true;
6181 }
6182
6183 /*
6184 * Performance mode settings provided through module parameter-perf_mode will
6185 * take affect only for:
6186 * 1. Aero family of adapters.
6187 * 2. When user sets module parameter- perf_mode in range of 0-2.
6188 */
6189 if ((perf_mode >= MR_BALANCED_PERF_MODE) &&
6190 (perf_mode <= MR_LATENCY_PERF_MODE))
6191 instance->perf_mode = perf_mode;
6192 /*
6193 * If intr coalescing is not supported by controller FW, then IOPS
6194 * and Balanced modes are not feasible.
6195 */
6196 if (!intr_coalescing)
6197 instance->perf_mode = MR_LATENCY_PERF_MODE;
6198
6199 }
6200
6201 if (instance->perf_mode == MR_BALANCED_PERF_MODE)
6202 instance->low_latency_index_start =
6203 MR_HIGH_IOPS_QUEUE_COUNT;
6204 else
6205 instance->low_latency_index_start = 1;
6206
6207 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
6208
6209 instance->msix_vectors = min(num_msix_req,
6210 instance->msix_vectors);
6211
6212 megasas_alloc_irq_vectors(instance);
6213 if (!instance->msix_vectors)
6214 instance->msix_load_balance = false;
6215 }
6216 /*
6217 * MSI-X host index 0 is common for all adapter.
6218 * It is used for all MPT based Adapters.
6219 */
6220 if (instance->msix_combined) {
6221 instance->reply_post_host_index_addr[0] =
6222 (u32 *)((u8 *)instance->reg_set +
6223 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET);
6224 } else {
6225 instance->reply_post_host_index_addr[0] =
6226 (u32 *)((u8 *)instance->reg_set +
6227 MPI2_REPLY_POST_HOST_INDEX_OFFSET);
6228 }
6229
6230 if (!instance->msix_vectors) {
6231 i = pci_alloc_irq_vectors(instance->pdev, 1, 1, PCI_IRQ_LEGACY);
6232 if (i < 0)
6233 goto fail_init_adapter;
6234 }
6235
6236 megasas_setup_reply_map(instance);
6237
6238 dev_info(&instance->pdev->dev,
6239 "current msix/online cpus\t: (%d/%d)\n",
6240 instance->msix_vectors, (unsigned int)num_online_cpus());
6241 dev_info(&instance->pdev->dev,
6242 "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled");
6243
6244 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
6245 (unsigned long)instance);
6246
6247 /*
6248 * Below are default value for legacy Firmware.
6249 * non-fusion based controllers
6250 */
6251 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
6252 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
6253 /* Get operational params, sge flags, send init cmd to controller */
6254 if (instance->instancet->init_adapter(instance))
6255 goto fail_init_adapter;
6256
6257 if (instance->adapter_type >= VENTURA_SERIES) {
6258 scratch_pad_3 =
6259 megasas_readl(instance,
6260 &instance->reg_set->outbound_scratch_pad_3);
6261 if ((scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK) >=
6262 MR_DEFAULT_NVME_PAGE_SHIFT)
6263 instance->nvme_page_size =
6264 (1 << (scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK));
6265
6266 dev_info(&instance->pdev->dev,
6267 "NVME page size\t: (%d)\n", instance->nvme_page_size);
6268 }
6269
6270 if (instance->msix_vectors ?
6271 megasas_setup_irqs_msix(instance, 1) :
6272 megasas_setup_irqs_ioapic(instance))
6273 goto fail_init_adapter;
6274
6275 if (instance->adapter_type != MFI_SERIES)
6276 megasas_setup_irq_poll(instance);
6277
6278 instance->instancet->enable_intr(instance);
6279
6280 dev_info(&instance->pdev->dev, "INIT adapter done\n");
6281
6282 megasas_setup_jbod_map(instance);
6283
6284 if (megasas_get_device_list(instance) != SUCCESS) {
6285 dev_err(&instance->pdev->dev,
6286 "%s: megasas_get_device_list failed\n",
6287 __func__);
6288 goto fail_get_ld_pd_list;
6289 }
6290
6291 /* stream detection initialization */
6292 if (instance->adapter_type >= VENTURA_SERIES) {
6293 fusion->stream_detect_by_ld =
6294 kcalloc(MAX_LOGICAL_DRIVES_EXT,
6295 sizeof(struct LD_STREAM_DETECT *),
6296 GFP_KERNEL);
6297 if (!fusion->stream_detect_by_ld) {
6298 dev_err(&instance->pdev->dev,
6299 "unable to allocate stream detection for pool of LDs\n");
6300 goto fail_get_ld_pd_list;
6301 }
6302 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) {
6303 fusion->stream_detect_by_ld[i] =
6304 kzalloc(sizeof(struct LD_STREAM_DETECT),
6305 GFP_KERNEL);
6306 if (!fusion->stream_detect_by_ld[i]) {
6307 dev_err(&instance->pdev->dev,
6308 "unable to allocate stream detect by LD\n ");
6309 for (j = 0; j < i; ++j)
6310 kfree(fusion->stream_detect_by_ld[j]);
6311 kfree(fusion->stream_detect_by_ld);
6312 fusion->stream_detect_by_ld = NULL;
6313 goto fail_get_ld_pd_list;
6314 }
6315 fusion->stream_detect_by_ld[i]->mru_bit_map
6316 = MR_STREAM_BITMAP;
6317 }
6318 }
6319
6320 /*
6321 * Compute the max allowed sectors per IO: The controller info has two
6322 * limits on max sectors. Driver should use the minimum of these two.
6323 *
6324 * 1 << stripe_sz_ops.min = max sectors per strip
6325 *
6326 * Note that older firmwares ( < FW ver 30) didn't report information
6327 * to calculate max_sectors_1. So the number ended up as zero always.
6328 */
6329 tmp_sectors = 0;
6330 ctrl_info = instance->ctrl_info_buf;
6331
6332 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
6333 le16_to_cpu(ctrl_info->max_strips_per_io);
6334 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
6335
6336 tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2);
6337
6338 instance->peerIsPresent = ctrl_info->cluster.peerIsPresent;
6339 instance->passive = ctrl_info->cluster.passive;
6340 memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId));
6341 instance->UnevenSpanSupport =
6342 ctrl_info->adapterOperations2.supportUnevenSpans;
6343 if (instance->UnevenSpanSupport) {
6344 struct fusion_context *fusion = instance->ctrl_context;
6345 if (MR_ValidateMapInfo(instance, instance->map_id))
6346 fusion->fast_path_io = 1;
6347 else
6348 fusion->fast_path_io = 0;
6349
6350 }
6351 if (ctrl_info->host_interface.SRIOV) {
6352 instance->requestorId = ctrl_info->iov.requestorId;
6353 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) {
6354 if (!ctrl_info->adapterOperations2.activePassive)
6355 instance->PlasmaFW111 = 1;
6356
6357 dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n",
6358 instance->PlasmaFW111 ? "1.11" : "new");
6359
6360 if (instance->PlasmaFW111) {
6361 iovPtr = (struct IOV_111 *)
6362 ((unsigned char *)ctrl_info + IOV_111_OFFSET);
6363 instance->requestorId = iovPtr->requestorId;
6364 }
6365 }
6366 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n",
6367 instance->requestorId);
6368 }
6369
6370 instance->crash_dump_fw_support =
6371 ctrl_info->adapterOperations3.supportCrashDump;
6372 instance->crash_dump_drv_support =
6373 (instance->crash_dump_fw_support &&
6374 instance->crash_dump_buf);
6375 if (instance->crash_dump_drv_support)
6376 megasas_set_crash_dump_params(instance,
6377 MR_CRASH_BUF_TURN_OFF);
6378
6379 else {
6380 if (instance->crash_dump_buf)
6381 dma_free_coherent(&instance->pdev->dev,
6382 CRASH_DMA_BUF_SIZE,
6383 instance->crash_dump_buf,
6384 instance->crash_dump_h);
6385 instance->crash_dump_buf = NULL;
6386 }
6387
6388 if (instance->snapdump_wait_time) {
6389 megasas_get_snapdump_properties(instance);
6390 dev_info(&instance->pdev->dev, "Snap dump wait time\t: %d\n",
6391 instance->snapdump_wait_time);
6392 }
6393
6394 dev_info(&instance->pdev->dev,
6395 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n",
6396 le16_to_cpu(ctrl_info->pci.vendor_id),
6397 le16_to_cpu(ctrl_info->pci.device_id),
6398 le16_to_cpu(ctrl_info->pci.sub_vendor_id),
6399 le16_to_cpu(ctrl_info->pci.sub_device_id));
6400 dev_info(&instance->pdev->dev, "unevenspan support : %s\n",
6401 instance->UnevenSpanSupport ? "yes" : "no");
6402 dev_info(&instance->pdev->dev, "firmware crash dump : %s\n",
6403 instance->crash_dump_drv_support ? "yes" : "no");
6404 dev_info(&instance->pdev->dev, "JBOD sequence map : %s\n",
6405 instance->use_seqnum_jbod_fp ? "enabled" : "disabled");
6406
6407 instance->max_sectors_per_req = instance->max_num_sge *
6408 SGE_BUFFER_SIZE / 512;
6409 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
6410 instance->max_sectors_per_req = tmp_sectors;
6411
6412 /* Check for valid throttlequeuedepth module parameter */
6413 if (throttlequeuedepth &&
6414 throttlequeuedepth <= instance->max_scsi_cmds)
6415 instance->throttlequeuedepth = throttlequeuedepth;
6416 else
6417 instance->throttlequeuedepth =
6418 MEGASAS_THROTTLE_QUEUE_DEPTH;
6419
6420 if ((resetwaittime < 1) ||
6421 (resetwaittime > MEGASAS_RESET_WAIT_TIME))
6422 resetwaittime = MEGASAS_RESET_WAIT_TIME;
6423
6424 if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT))
6425 scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
6426
6427 /* Launch SR-IOV heartbeat timer */
6428 if (instance->requestorId) {
6429 if (!megasas_sriov_start_heartbeat(instance, 1)) {
6430 megasas_start_timer(instance);
6431 } else {
6432 instance->skip_heartbeat_timer_del = 1;
6433 goto fail_get_ld_pd_list;
6434 }
6435 }
6436
6437 /*
6438 * Create and start watchdog thread which will monitor
6439 * controller state every 1 sec and trigger OCR when
6440 * it enters fault state
6441 */
6442 if (instance->adapter_type != MFI_SERIES)
6443 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
6444 goto fail_start_watchdog;
6445
6446 return 0;
6447
6448 fail_start_watchdog:
6449 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
6450 del_timer_sync(&instance->sriov_heartbeat_timer);
6451 fail_get_ld_pd_list:
6452 instance->instancet->disable_intr(instance);
6453 megasas_destroy_irqs(instance);
6454 fail_init_adapter:
6455 if (instance->msix_vectors)
6456 pci_free_irq_vectors(instance->pdev);
6457 instance->msix_vectors = 0;
6458 fail_alloc_dma_buf:
6459 megasas_free_ctrl_dma_buffers(instance);
6460 megasas_free_ctrl_mem(instance);
6461 fail_ready_state:
6462 iounmap(instance->reg_set);
6463
6464 fail_ioremap:
6465 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6466
6467 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6468 __func__, __LINE__);
6469 return -EINVAL;
6470 }
6471
6472 /**
6473 * megasas_release_mfi - Reverses the FW initialization
6474 * @instance: Adapter soft state
6475 */
megasas_release_mfi(struct megasas_instance * instance)6476 static void megasas_release_mfi(struct megasas_instance *instance)
6477 {
6478 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
6479
6480 if (instance->reply_queue)
6481 dma_free_coherent(&instance->pdev->dev, reply_q_sz,
6482 instance->reply_queue, instance->reply_queue_h);
6483
6484 megasas_free_cmds(instance);
6485
6486 iounmap(instance->reg_set);
6487
6488 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6489 }
6490
6491 /**
6492 * megasas_get_seq_num - Gets latest event sequence numbers
6493 * @instance: Adapter soft state
6494 * @eli: FW event log sequence numbers information
6495 *
6496 * FW maintains a log of all events in a non-volatile area. Upper layers would
6497 * usually find out the latest sequence number of the events, the seq number at
6498 * the boot etc. They would "read" all the events below the latest seq number
6499 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
6500 * number), they would subsribe to AEN (asynchronous event notification) and
6501 * wait for the events to happen.
6502 */
6503 static int
megasas_get_seq_num(struct megasas_instance * instance,struct megasas_evt_log_info * eli)6504 megasas_get_seq_num(struct megasas_instance *instance,
6505 struct megasas_evt_log_info *eli)
6506 {
6507 struct megasas_cmd *cmd;
6508 struct megasas_dcmd_frame *dcmd;
6509 struct megasas_evt_log_info *el_info;
6510 dma_addr_t el_info_h = 0;
6511 int ret;
6512
6513 cmd = megasas_get_cmd(instance);
6514
6515 if (!cmd) {
6516 return -ENOMEM;
6517 }
6518
6519 dcmd = &cmd->frame->dcmd;
6520 el_info = dma_alloc_coherent(&instance->pdev->dev,
6521 sizeof(struct megasas_evt_log_info),
6522 &el_info_h, GFP_KERNEL);
6523 if (!el_info) {
6524 megasas_return_cmd(instance, cmd);
6525 return -ENOMEM;
6526 }
6527
6528 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6529
6530 dcmd->cmd = MFI_CMD_DCMD;
6531 dcmd->cmd_status = 0x0;
6532 dcmd->sge_count = 1;
6533 dcmd->flags = MFI_FRAME_DIR_READ;
6534 dcmd->timeout = 0;
6535 dcmd->pad_0 = 0;
6536 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
6537 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
6538
6539 megasas_set_dma_settings(instance, dcmd, el_info_h,
6540 sizeof(struct megasas_evt_log_info));
6541
6542 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
6543 if (ret != DCMD_SUCCESS) {
6544 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6545 __func__, __LINE__);
6546 goto dcmd_failed;
6547 }
6548
6549 /*
6550 * Copy the data back into callers buffer
6551 */
6552 eli->newest_seq_num = el_info->newest_seq_num;
6553 eli->oldest_seq_num = el_info->oldest_seq_num;
6554 eli->clear_seq_num = el_info->clear_seq_num;
6555 eli->shutdown_seq_num = el_info->shutdown_seq_num;
6556 eli->boot_seq_num = el_info->boot_seq_num;
6557
6558 dcmd_failed:
6559 dma_free_coherent(&instance->pdev->dev,
6560 sizeof(struct megasas_evt_log_info),
6561 el_info, el_info_h);
6562
6563 megasas_return_cmd(instance, cmd);
6564
6565 return ret;
6566 }
6567
6568 /**
6569 * megasas_register_aen - Registers for asynchronous event notification
6570 * @instance: Adapter soft state
6571 * @seq_num: The starting sequence number
6572 * @class_locale_word: Class of the event
6573 *
6574 * This function subscribes for AEN for events beyond the @seq_num. It requests
6575 * to be notified if and only if the event is of type @class_locale
6576 */
6577 static int
megasas_register_aen(struct megasas_instance * instance,u32 seq_num,u32 class_locale_word)6578 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
6579 u32 class_locale_word)
6580 {
6581 int ret_val;
6582 struct megasas_cmd *cmd;
6583 struct megasas_dcmd_frame *dcmd;
6584 union megasas_evt_class_locale curr_aen;
6585 union megasas_evt_class_locale prev_aen;
6586
6587 /*
6588 * If there an AEN pending already (aen_cmd), check if the
6589 * class_locale of that pending AEN is inclusive of the new
6590 * AEN request we currently have. If it is, then we don't have
6591 * to do anything. In other words, whichever events the current
6592 * AEN request is subscribing to, have already been subscribed
6593 * to.
6594 *
6595 * If the old_cmd is _not_ inclusive, then we have to abort
6596 * that command, form a class_locale that is superset of both
6597 * old and current and re-issue to the FW
6598 */
6599
6600 curr_aen.word = class_locale_word;
6601
6602 if (instance->aen_cmd) {
6603
6604 prev_aen.word =
6605 le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]);
6606
6607 if ((curr_aen.members.class < MFI_EVT_CLASS_DEBUG) ||
6608 (curr_aen.members.class > MFI_EVT_CLASS_DEAD)) {
6609 dev_info(&instance->pdev->dev,
6610 "%s %d out of range class %d send by application\n",
6611 __func__, __LINE__, curr_aen.members.class);
6612 return 0;
6613 }
6614
6615 /*
6616 * A class whose enum value is smaller is inclusive of all
6617 * higher values. If a PROGRESS (= -1) was previously
6618 * registered, then a new registration requests for higher
6619 * classes need not be sent to FW. They are automatically
6620 * included.
6621 *
6622 * Locale numbers don't have such hierarchy. They are bitmap
6623 * values
6624 */
6625 if ((prev_aen.members.class <= curr_aen.members.class) &&
6626 !((prev_aen.members.locale & curr_aen.members.locale) ^
6627 curr_aen.members.locale)) {
6628 /*
6629 * Previously issued event registration includes
6630 * current request. Nothing to do.
6631 */
6632 return 0;
6633 } else {
6634 curr_aen.members.locale |= prev_aen.members.locale;
6635
6636 if (prev_aen.members.class < curr_aen.members.class)
6637 curr_aen.members.class = prev_aen.members.class;
6638
6639 instance->aen_cmd->abort_aen = 1;
6640 ret_val = megasas_issue_blocked_abort_cmd(instance,
6641 instance->
6642 aen_cmd, 30);
6643
6644 if (ret_val) {
6645 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort "
6646 "previous AEN command\n");
6647 return ret_val;
6648 }
6649 }
6650 }
6651
6652 cmd = megasas_get_cmd(instance);
6653
6654 if (!cmd)
6655 return -ENOMEM;
6656
6657 dcmd = &cmd->frame->dcmd;
6658
6659 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
6660
6661 /*
6662 * Prepare DCMD for aen registration
6663 */
6664 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6665
6666 dcmd->cmd = MFI_CMD_DCMD;
6667 dcmd->cmd_status = 0x0;
6668 dcmd->sge_count = 1;
6669 dcmd->flags = MFI_FRAME_DIR_READ;
6670 dcmd->timeout = 0;
6671 dcmd->pad_0 = 0;
6672 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
6673 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
6674 dcmd->mbox.w[0] = cpu_to_le32(seq_num);
6675 instance->last_seq_num = seq_num;
6676 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
6677
6678 megasas_set_dma_settings(instance, dcmd, instance->evt_detail_h,
6679 sizeof(struct megasas_evt_detail));
6680
6681 if (instance->aen_cmd != NULL) {
6682 megasas_return_cmd(instance, cmd);
6683 return 0;
6684 }
6685
6686 /*
6687 * Store reference to the cmd used to register for AEN. When an
6688 * application wants us to register for AEN, we have to abort this
6689 * cmd and re-register with a new EVENT LOCALE supplied by that app
6690 */
6691 instance->aen_cmd = cmd;
6692
6693 /*
6694 * Issue the aen registration frame
6695 */
6696 instance->instancet->issue_dcmd(instance, cmd);
6697
6698 return 0;
6699 }
6700
6701 /* megasas_get_target_prop - Send DCMD with below details to firmware.
6702 *
6703 * This DCMD will fetch few properties of LD/system PD defined
6704 * in MR_TARGET_DEV_PROPERTIES. eg. Queue Depth, MDTS value.
6705 *
6706 * DCMD send by drivers whenever new target is added to the OS.
6707 *
6708 * dcmd.opcode - MR_DCMD_DEV_GET_TARGET_PROP
6709 * dcmd.mbox.b[0] - DCMD is to be fired for LD or system PD.
6710 * 0 = system PD, 1 = LD.
6711 * dcmd.mbox.s[1] - TargetID for LD/system PD.
6712 * dcmd.sge IN - Pointer to return MR_TARGET_DEV_PROPERTIES.
6713 *
6714 * @instance: Adapter soft state
6715 * @sdev: OS provided scsi device
6716 *
6717 * Returns 0 on success non-zero on failure.
6718 */
6719 int
megasas_get_target_prop(struct megasas_instance * instance,struct scsi_device * sdev)6720 megasas_get_target_prop(struct megasas_instance *instance,
6721 struct scsi_device *sdev)
6722 {
6723 int ret;
6724 struct megasas_cmd *cmd;
6725 struct megasas_dcmd_frame *dcmd;
6726 u16 targetId = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) +
6727 sdev->id;
6728
6729 cmd = megasas_get_cmd(instance);
6730
6731 if (!cmd) {
6732 dev_err(&instance->pdev->dev,
6733 "Failed to get cmd %s\n", __func__);
6734 return -ENOMEM;
6735 }
6736
6737 dcmd = &cmd->frame->dcmd;
6738
6739 memset(instance->tgt_prop, 0, sizeof(*instance->tgt_prop));
6740 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6741 dcmd->mbox.b[0] = MEGASAS_IS_LOGICAL(sdev);
6742
6743 dcmd->mbox.s[1] = cpu_to_le16(targetId);
6744 dcmd->cmd = MFI_CMD_DCMD;
6745 dcmd->cmd_status = 0xFF;
6746 dcmd->sge_count = 1;
6747 dcmd->flags = MFI_FRAME_DIR_READ;
6748 dcmd->timeout = 0;
6749 dcmd->pad_0 = 0;
6750 dcmd->data_xfer_len =
6751 cpu_to_le32(sizeof(struct MR_TARGET_PROPERTIES));
6752 dcmd->opcode = cpu_to_le32(MR_DCMD_DRV_GET_TARGET_PROP);
6753
6754 megasas_set_dma_settings(instance, dcmd, instance->tgt_prop_h,
6755 sizeof(struct MR_TARGET_PROPERTIES));
6756
6757 if ((instance->adapter_type != MFI_SERIES) &&
6758 !instance->mask_interrupts)
6759 ret = megasas_issue_blocked_cmd(instance,
6760 cmd, MFI_IO_TIMEOUT_SECS);
6761 else
6762 ret = megasas_issue_polled(instance, cmd);
6763
6764 switch (ret) {
6765 case DCMD_TIMEOUT:
6766 switch (dcmd_timeout_ocr_possible(instance)) {
6767 case INITIATE_OCR:
6768 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
6769 mutex_unlock(&instance->reset_mutex);
6770 megasas_reset_fusion(instance->host,
6771 MFI_IO_TIMEOUT_OCR);
6772 mutex_lock(&instance->reset_mutex);
6773 break;
6774 case KILL_ADAPTER:
6775 megaraid_sas_kill_hba(instance);
6776 break;
6777 case IGNORE_TIMEOUT:
6778 dev_info(&instance->pdev->dev,
6779 "Ignore DCMD timeout: %s %d\n",
6780 __func__, __LINE__);
6781 break;
6782 }
6783 break;
6784
6785 default:
6786 megasas_return_cmd(instance, cmd);
6787 }
6788 if (ret != DCMD_SUCCESS)
6789 dev_err(&instance->pdev->dev,
6790 "return from %s %d return value %d\n",
6791 __func__, __LINE__, ret);
6792
6793 return ret;
6794 }
6795
6796 /**
6797 * megasas_start_aen - Subscribes to AEN during driver load time
6798 * @instance: Adapter soft state
6799 */
megasas_start_aen(struct megasas_instance * instance)6800 static int megasas_start_aen(struct megasas_instance *instance)
6801 {
6802 struct megasas_evt_log_info eli;
6803 union megasas_evt_class_locale class_locale;
6804
6805 /*
6806 * Get the latest sequence number from FW
6807 */
6808 memset(&eli, 0, sizeof(eli));
6809
6810 if (megasas_get_seq_num(instance, &eli))
6811 return -1;
6812
6813 /*
6814 * Register AEN with FW for latest sequence number plus 1
6815 */
6816 class_locale.members.reserved = 0;
6817 class_locale.members.locale = MR_EVT_LOCALE_ALL;
6818 class_locale.members.class = MR_EVT_CLASS_DEBUG;
6819
6820 return megasas_register_aen(instance,
6821 le32_to_cpu(eli.newest_seq_num) + 1,
6822 class_locale.word);
6823 }
6824
6825 /**
6826 * megasas_io_attach - Attaches this driver to SCSI mid-layer
6827 * @instance: Adapter soft state
6828 */
megasas_io_attach(struct megasas_instance * instance)6829 static int megasas_io_attach(struct megasas_instance *instance)
6830 {
6831 struct Scsi_Host *host = instance->host;
6832
6833 /*
6834 * Export parameters required by SCSI mid-layer
6835 */
6836 host->unique_id = instance->unique_id;
6837 host->can_queue = instance->max_scsi_cmds;
6838 host->this_id = instance->init_id;
6839 host->sg_tablesize = instance->max_num_sge;
6840
6841 if (instance->fw_support_ieee)
6842 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
6843
6844 /*
6845 * Check if the module parameter value for max_sectors can be used
6846 */
6847 if (max_sectors && max_sectors < instance->max_sectors_per_req)
6848 instance->max_sectors_per_req = max_sectors;
6849 else {
6850 if (max_sectors) {
6851 if (((instance->pdev->device ==
6852 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
6853 (instance->pdev->device ==
6854 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
6855 (max_sectors <= MEGASAS_MAX_SECTORS)) {
6856 instance->max_sectors_per_req = max_sectors;
6857 } else {
6858 dev_info(&instance->pdev->dev, "max_sectors should be > 0"
6859 "and <= %d (or < 1MB for GEN2 controller)\n",
6860 instance->max_sectors_per_req);
6861 }
6862 }
6863 }
6864
6865 host->max_sectors = instance->max_sectors_per_req;
6866 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
6867 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
6868 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
6869 host->max_lun = MEGASAS_MAX_LUN;
6870 host->max_cmd_len = 16;
6871
6872 /*
6873 * Notify the mid-layer about the new controller
6874 */
6875 if (scsi_add_host(host, &instance->pdev->dev)) {
6876 dev_err(&instance->pdev->dev,
6877 "Failed to add host from %s %d\n",
6878 __func__, __LINE__);
6879 return -ENODEV;
6880 }
6881
6882 return 0;
6883 }
6884
6885 /**
6886 * megasas_set_dma_mask - Set DMA mask for supported controllers
6887 *
6888 * @instance: Adapter soft state
6889 * Description:
6890 *
6891 * For Ventura, driver/FW will operate in 63bit DMA addresses.
6892 *
6893 * For invader-
6894 * By default, driver/FW will operate in 32bit DMA addresses
6895 * for consistent DMA mapping but if 32 bit consistent
6896 * DMA mask fails, driver will try with 63 bit consistent
6897 * mask provided FW is true 63bit DMA capable
6898 *
6899 * For older controllers(Thunderbolt and MFI based adapters)-
6900 * driver/FW will operate in 32 bit consistent DMA addresses.
6901 */
6902 static int
megasas_set_dma_mask(struct megasas_instance * instance)6903 megasas_set_dma_mask(struct megasas_instance *instance)
6904 {
6905 u64 consistent_mask;
6906 struct pci_dev *pdev;
6907 u32 scratch_pad_1;
6908
6909 pdev = instance->pdev;
6910 consistent_mask = (instance->adapter_type >= VENTURA_SERIES) ?
6911 DMA_BIT_MASK(63) : DMA_BIT_MASK(32);
6912
6913 if (IS_DMA64) {
6914 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(63)) &&
6915 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
6916 goto fail_set_dma_mask;
6917
6918 if ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) &&
6919 (dma_set_coherent_mask(&pdev->dev, consistent_mask) &&
6920 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))) {
6921 /*
6922 * If 32 bit DMA mask fails, then try for 64 bit mask
6923 * for FW capable of handling 64 bit DMA.
6924 */
6925 scratch_pad_1 = megasas_readl
6926 (instance, &instance->reg_set->outbound_scratch_pad_1);
6927
6928 if (!(scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET))
6929 goto fail_set_dma_mask;
6930 else if (dma_set_mask_and_coherent(&pdev->dev,
6931 DMA_BIT_MASK(63)))
6932 goto fail_set_dma_mask;
6933 }
6934 } else if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
6935 goto fail_set_dma_mask;
6936
6937 if (pdev->dev.coherent_dma_mask == DMA_BIT_MASK(32))
6938 instance->consistent_mask_64bit = false;
6939 else
6940 instance->consistent_mask_64bit = true;
6941
6942 dev_info(&pdev->dev, "%s bit DMA mask and %s bit consistent mask\n",
6943 ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) ? "63" : "32"),
6944 (instance->consistent_mask_64bit ? "63" : "32"));
6945
6946 return 0;
6947
6948 fail_set_dma_mask:
6949 dev_err(&pdev->dev, "Failed to set DMA mask\n");
6950 return -1;
6951
6952 }
6953
6954 /*
6955 * megasas_set_adapter_type - Set adapter type.
6956 * Supported controllers can be divided in
6957 * different categories-
6958 * enum MR_ADAPTER_TYPE {
6959 * MFI_SERIES = 1,
6960 * THUNDERBOLT_SERIES = 2,
6961 * INVADER_SERIES = 3,
6962 * VENTURA_SERIES = 4,
6963 * AERO_SERIES = 5,
6964 * };
6965 * @instance: Adapter soft state
6966 * return: void
6967 */
megasas_set_adapter_type(struct megasas_instance * instance)6968 static inline void megasas_set_adapter_type(struct megasas_instance *instance)
6969 {
6970 if ((instance->pdev->vendor == PCI_VENDOR_ID_DELL) &&
6971 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5)) {
6972 instance->adapter_type = MFI_SERIES;
6973 } else {
6974 switch (instance->pdev->device) {
6975 case PCI_DEVICE_ID_LSI_AERO_10E1:
6976 case PCI_DEVICE_ID_LSI_AERO_10E2:
6977 case PCI_DEVICE_ID_LSI_AERO_10E5:
6978 case PCI_DEVICE_ID_LSI_AERO_10E6:
6979 instance->adapter_type = AERO_SERIES;
6980 break;
6981 case PCI_DEVICE_ID_LSI_VENTURA:
6982 case PCI_DEVICE_ID_LSI_CRUSADER:
6983 case PCI_DEVICE_ID_LSI_HARPOON:
6984 case PCI_DEVICE_ID_LSI_TOMCAT:
6985 case PCI_DEVICE_ID_LSI_VENTURA_4PORT:
6986 case PCI_DEVICE_ID_LSI_CRUSADER_4PORT:
6987 instance->adapter_type = VENTURA_SERIES;
6988 break;
6989 case PCI_DEVICE_ID_LSI_FUSION:
6990 case PCI_DEVICE_ID_LSI_PLASMA:
6991 instance->adapter_type = THUNDERBOLT_SERIES;
6992 break;
6993 case PCI_DEVICE_ID_LSI_INVADER:
6994 case PCI_DEVICE_ID_LSI_INTRUDER:
6995 case PCI_DEVICE_ID_LSI_INTRUDER_24:
6996 case PCI_DEVICE_ID_LSI_CUTLASS_52:
6997 case PCI_DEVICE_ID_LSI_CUTLASS_53:
6998 case PCI_DEVICE_ID_LSI_FURY:
6999 instance->adapter_type = INVADER_SERIES;
7000 break;
7001 default: /* For all other supported controllers */
7002 instance->adapter_type = MFI_SERIES;
7003 break;
7004 }
7005 }
7006 }
7007
megasas_alloc_mfi_ctrl_mem(struct megasas_instance * instance)7008 static inline int megasas_alloc_mfi_ctrl_mem(struct megasas_instance *instance)
7009 {
7010 instance->producer = dma_alloc_coherent(&instance->pdev->dev,
7011 sizeof(u32), &instance->producer_h, GFP_KERNEL);
7012 instance->consumer = dma_alloc_coherent(&instance->pdev->dev,
7013 sizeof(u32), &instance->consumer_h, GFP_KERNEL);
7014
7015 if (!instance->producer || !instance->consumer) {
7016 dev_err(&instance->pdev->dev,
7017 "Failed to allocate memory for producer, consumer\n");
7018 return -1;
7019 }
7020
7021 *instance->producer = 0;
7022 *instance->consumer = 0;
7023 return 0;
7024 }
7025
7026 /**
7027 * megasas_alloc_ctrl_mem - Allocate per controller memory for core data
7028 * structures which are not common across MFI
7029 * adapters and fusion adapters.
7030 * For MFI based adapters, allocate producer and
7031 * consumer buffers. For fusion adapters, allocate
7032 * memory for fusion context.
7033 * @instance: Adapter soft state
7034 * return: 0 for SUCCESS
7035 */
megasas_alloc_ctrl_mem(struct megasas_instance * instance)7036 static int megasas_alloc_ctrl_mem(struct megasas_instance *instance)
7037 {
7038 instance->reply_map = kcalloc(nr_cpu_ids, sizeof(unsigned int),
7039 GFP_KERNEL);
7040 if (!instance->reply_map)
7041 return -ENOMEM;
7042
7043 switch (instance->adapter_type) {
7044 case MFI_SERIES:
7045 if (megasas_alloc_mfi_ctrl_mem(instance))
7046 goto fail;
7047 break;
7048 case AERO_SERIES:
7049 case VENTURA_SERIES:
7050 case THUNDERBOLT_SERIES:
7051 case INVADER_SERIES:
7052 if (megasas_alloc_fusion_context(instance))
7053 goto fail;
7054 break;
7055 }
7056
7057 return 0;
7058 fail:
7059 kfree(instance->reply_map);
7060 instance->reply_map = NULL;
7061 return -ENOMEM;
7062 }
7063
7064 /*
7065 * megasas_free_ctrl_mem - Free fusion context for fusion adapters and
7066 * producer, consumer buffers for MFI adapters
7067 *
7068 * @instance - Adapter soft instance
7069 *
7070 */
megasas_free_ctrl_mem(struct megasas_instance * instance)7071 static inline void megasas_free_ctrl_mem(struct megasas_instance *instance)
7072 {
7073 kfree(instance->reply_map);
7074 if (instance->adapter_type == MFI_SERIES) {
7075 if (instance->producer)
7076 dma_free_coherent(&instance->pdev->dev, sizeof(u32),
7077 instance->producer,
7078 instance->producer_h);
7079 if (instance->consumer)
7080 dma_free_coherent(&instance->pdev->dev, sizeof(u32),
7081 instance->consumer,
7082 instance->consumer_h);
7083 } else {
7084 megasas_free_fusion_context(instance);
7085 }
7086 }
7087
7088 /**
7089 * megasas_alloc_ctrl_dma_buffers - Allocate consistent DMA buffers during
7090 * driver load time
7091 *
7092 * @instance: Adapter soft instance
7093 *
7094 * @return: O for SUCCESS
7095 */
7096 static inline
megasas_alloc_ctrl_dma_buffers(struct megasas_instance * instance)7097 int megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance)
7098 {
7099 struct pci_dev *pdev = instance->pdev;
7100 struct fusion_context *fusion = instance->ctrl_context;
7101
7102 instance->evt_detail = dma_alloc_coherent(&pdev->dev,
7103 sizeof(struct megasas_evt_detail),
7104 &instance->evt_detail_h, GFP_KERNEL);
7105
7106 if (!instance->evt_detail) {
7107 dev_err(&instance->pdev->dev,
7108 "Failed to allocate event detail buffer\n");
7109 return -ENOMEM;
7110 }
7111
7112 if (fusion) {
7113 fusion->ioc_init_request =
7114 dma_alloc_coherent(&pdev->dev,
7115 sizeof(struct MPI2_IOC_INIT_REQUEST),
7116 &fusion->ioc_init_request_phys,
7117 GFP_KERNEL);
7118
7119 if (!fusion->ioc_init_request) {
7120 dev_err(&pdev->dev,
7121 "Failed to allocate PD list buffer\n");
7122 return -ENOMEM;
7123 }
7124
7125 instance->snapdump_prop = dma_alloc_coherent(&pdev->dev,
7126 sizeof(struct MR_SNAPDUMP_PROPERTIES),
7127 &instance->snapdump_prop_h, GFP_KERNEL);
7128
7129 if (!instance->snapdump_prop)
7130 dev_err(&pdev->dev,
7131 "Failed to allocate snapdump properties buffer\n");
7132
7133 instance->host_device_list_buf = dma_alloc_coherent(&pdev->dev,
7134 HOST_DEVICE_LIST_SZ,
7135 &instance->host_device_list_buf_h,
7136 GFP_KERNEL);
7137
7138 if (!instance->host_device_list_buf) {
7139 dev_err(&pdev->dev,
7140 "Failed to allocate targetid list buffer\n");
7141 return -ENOMEM;
7142 }
7143
7144 }
7145
7146 instance->pd_list_buf =
7147 dma_alloc_coherent(&pdev->dev,
7148 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7149 &instance->pd_list_buf_h, GFP_KERNEL);
7150
7151 if (!instance->pd_list_buf) {
7152 dev_err(&pdev->dev, "Failed to allocate PD list buffer\n");
7153 return -ENOMEM;
7154 }
7155
7156 instance->ctrl_info_buf =
7157 dma_alloc_coherent(&pdev->dev,
7158 sizeof(struct megasas_ctrl_info),
7159 &instance->ctrl_info_buf_h, GFP_KERNEL);
7160
7161 if (!instance->ctrl_info_buf) {
7162 dev_err(&pdev->dev,
7163 "Failed to allocate controller info buffer\n");
7164 return -ENOMEM;
7165 }
7166
7167 instance->ld_list_buf =
7168 dma_alloc_coherent(&pdev->dev,
7169 sizeof(struct MR_LD_LIST),
7170 &instance->ld_list_buf_h, GFP_KERNEL);
7171
7172 if (!instance->ld_list_buf) {
7173 dev_err(&pdev->dev, "Failed to allocate LD list buffer\n");
7174 return -ENOMEM;
7175 }
7176
7177 instance->ld_targetid_list_buf =
7178 dma_alloc_coherent(&pdev->dev,
7179 sizeof(struct MR_LD_TARGETID_LIST),
7180 &instance->ld_targetid_list_buf_h, GFP_KERNEL);
7181
7182 if (!instance->ld_targetid_list_buf) {
7183 dev_err(&pdev->dev,
7184 "Failed to allocate LD targetid list buffer\n");
7185 return -ENOMEM;
7186 }
7187
7188 if (!reset_devices) {
7189 instance->system_info_buf =
7190 dma_alloc_coherent(&pdev->dev,
7191 sizeof(struct MR_DRV_SYSTEM_INFO),
7192 &instance->system_info_h, GFP_KERNEL);
7193 instance->pd_info =
7194 dma_alloc_coherent(&pdev->dev,
7195 sizeof(struct MR_PD_INFO),
7196 &instance->pd_info_h, GFP_KERNEL);
7197 instance->tgt_prop =
7198 dma_alloc_coherent(&pdev->dev,
7199 sizeof(struct MR_TARGET_PROPERTIES),
7200 &instance->tgt_prop_h, GFP_KERNEL);
7201 instance->crash_dump_buf =
7202 dma_alloc_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7203 &instance->crash_dump_h, GFP_KERNEL);
7204
7205 if (!instance->system_info_buf)
7206 dev_err(&instance->pdev->dev,
7207 "Failed to allocate system info buffer\n");
7208
7209 if (!instance->pd_info)
7210 dev_err(&instance->pdev->dev,
7211 "Failed to allocate pd_info buffer\n");
7212
7213 if (!instance->tgt_prop)
7214 dev_err(&instance->pdev->dev,
7215 "Failed to allocate tgt_prop buffer\n");
7216
7217 if (!instance->crash_dump_buf)
7218 dev_err(&instance->pdev->dev,
7219 "Failed to allocate crash dump buffer\n");
7220 }
7221
7222 return 0;
7223 }
7224
7225 /*
7226 * megasas_free_ctrl_dma_buffers - Free consistent DMA buffers allocated
7227 * during driver load time
7228 *
7229 * @instance- Adapter soft instance
7230 *
7231 */
7232 static inline
megasas_free_ctrl_dma_buffers(struct megasas_instance * instance)7233 void megasas_free_ctrl_dma_buffers(struct megasas_instance *instance)
7234 {
7235 struct pci_dev *pdev = instance->pdev;
7236 struct fusion_context *fusion = instance->ctrl_context;
7237
7238 if (instance->evt_detail)
7239 dma_free_coherent(&pdev->dev, sizeof(struct megasas_evt_detail),
7240 instance->evt_detail,
7241 instance->evt_detail_h);
7242
7243 if (fusion && fusion->ioc_init_request)
7244 dma_free_coherent(&pdev->dev,
7245 sizeof(struct MPI2_IOC_INIT_REQUEST),
7246 fusion->ioc_init_request,
7247 fusion->ioc_init_request_phys);
7248
7249 if (instance->pd_list_buf)
7250 dma_free_coherent(&pdev->dev,
7251 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7252 instance->pd_list_buf,
7253 instance->pd_list_buf_h);
7254
7255 if (instance->ld_list_buf)
7256 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_LIST),
7257 instance->ld_list_buf,
7258 instance->ld_list_buf_h);
7259
7260 if (instance->ld_targetid_list_buf)
7261 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_TARGETID_LIST),
7262 instance->ld_targetid_list_buf,
7263 instance->ld_targetid_list_buf_h);
7264
7265 if (instance->ctrl_info_buf)
7266 dma_free_coherent(&pdev->dev, sizeof(struct megasas_ctrl_info),
7267 instance->ctrl_info_buf,
7268 instance->ctrl_info_buf_h);
7269
7270 if (instance->system_info_buf)
7271 dma_free_coherent(&pdev->dev, sizeof(struct MR_DRV_SYSTEM_INFO),
7272 instance->system_info_buf,
7273 instance->system_info_h);
7274
7275 if (instance->pd_info)
7276 dma_free_coherent(&pdev->dev, sizeof(struct MR_PD_INFO),
7277 instance->pd_info, instance->pd_info_h);
7278
7279 if (instance->tgt_prop)
7280 dma_free_coherent(&pdev->dev, sizeof(struct MR_TARGET_PROPERTIES),
7281 instance->tgt_prop, instance->tgt_prop_h);
7282
7283 if (instance->crash_dump_buf)
7284 dma_free_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7285 instance->crash_dump_buf,
7286 instance->crash_dump_h);
7287
7288 if (instance->snapdump_prop)
7289 dma_free_coherent(&pdev->dev,
7290 sizeof(struct MR_SNAPDUMP_PROPERTIES),
7291 instance->snapdump_prop,
7292 instance->snapdump_prop_h);
7293
7294 if (instance->host_device_list_buf)
7295 dma_free_coherent(&pdev->dev,
7296 HOST_DEVICE_LIST_SZ,
7297 instance->host_device_list_buf,
7298 instance->host_device_list_buf_h);
7299
7300 }
7301
7302 /*
7303 * megasas_init_ctrl_params - Initialize controller's instance
7304 * parameters before FW init
7305 * @instance - Adapter soft instance
7306 * @return - void
7307 */
megasas_init_ctrl_params(struct megasas_instance * instance)7308 static inline void megasas_init_ctrl_params(struct megasas_instance *instance)
7309 {
7310 instance->fw_crash_state = UNAVAILABLE;
7311
7312 megasas_poll_wait_aen = 0;
7313 instance->issuepend_done = 1;
7314 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
7315
7316 /*
7317 * Initialize locks and queues
7318 */
7319 INIT_LIST_HEAD(&instance->cmd_pool);
7320 INIT_LIST_HEAD(&instance->internal_reset_pending_q);
7321
7322 atomic_set(&instance->fw_outstanding, 0);
7323 atomic64_set(&instance->total_io_count, 0);
7324
7325 init_waitqueue_head(&instance->int_cmd_wait_q);
7326 init_waitqueue_head(&instance->abort_cmd_wait_q);
7327
7328 spin_lock_init(&instance->crashdump_lock);
7329 spin_lock_init(&instance->mfi_pool_lock);
7330 spin_lock_init(&instance->hba_lock);
7331 spin_lock_init(&instance->stream_lock);
7332 spin_lock_init(&instance->completion_lock);
7333
7334 mutex_init(&instance->reset_mutex);
7335
7336 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
7337 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
7338 instance->flag_ieee = 1;
7339
7340 megasas_dbg_lvl = 0;
7341 instance->flag = 0;
7342 instance->unload = 1;
7343 instance->last_time = 0;
7344 instance->disableOnlineCtrlReset = 1;
7345 instance->UnevenSpanSupport = 0;
7346 instance->smp_affinity_enable = smp_affinity_enable ? true : false;
7347 instance->msix_load_balance = false;
7348
7349 if (instance->adapter_type != MFI_SERIES)
7350 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
7351 else
7352 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
7353 }
7354
7355 /**
7356 * megasas_probe_one - PCI hotplug entry point
7357 * @pdev: PCI device structure
7358 * @id: PCI ids of supported hotplugged adapter
7359 */
megasas_probe_one(struct pci_dev * pdev,const struct pci_device_id * id)7360 static int megasas_probe_one(struct pci_dev *pdev,
7361 const struct pci_device_id *id)
7362 {
7363 int rval, pos;
7364 struct Scsi_Host *host;
7365 struct megasas_instance *instance;
7366 u16 control = 0;
7367
7368 switch (pdev->device) {
7369 case PCI_DEVICE_ID_LSI_AERO_10E0:
7370 case PCI_DEVICE_ID_LSI_AERO_10E3:
7371 case PCI_DEVICE_ID_LSI_AERO_10E4:
7372 case PCI_DEVICE_ID_LSI_AERO_10E7:
7373 dev_err(&pdev->dev, "Adapter is in non secure mode\n");
7374 return 1;
7375 case PCI_DEVICE_ID_LSI_AERO_10E1:
7376 case PCI_DEVICE_ID_LSI_AERO_10E5:
7377 dev_info(&pdev->dev, "Adapter is in configurable secure mode\n");
7378 break;
7379 }
7380
7381 /* Reset MSI-X in the kdump kernel */
7382 if (reset_devices) {
7383 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
7384 if (pos) {
7385 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
7386 &control);
7387 if (control & PCI_MSIX_FLAGS_ENABLE) {
7388 dev_info(&pdev->dev, "resetting MSI-X\n");
7389 pci_write_config_word(pdev,
7390 pos + PCI_MSIX_FLAGS,
7391 control &
7392 ~PCI_MSIX_FLAGS_ENABLE);
7393 }
7394 }
7395 }
7396
7397 /*
7398 * PCI prepping: enable device set bus mastering and dma mask
7399 */
7400 rval = pci_enable_device_mem(pdev);
7401
7402 if (rval) {
7403 return rval;
7404 }
7405
7406 pci_set_master(pdev);
7407
7408 host = scsi_host_alloc(&megasas_template,
7409 sizeof(struct megasas_instance));
7410
7411 if (!host) {
7412 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n");
7413 goto fail_alloc_instance;
7414 }
7415
7416 instance = (struct megasas_instance *)host->hostdata;
7417 memset(instance, 0, sizeof(*instance));
7418 atomic_set(&instance->fw_reset_no_pci_access, 0);
7419
7420 /*
7421 * Initialize PCI related and misc parameters
7422 */
7423 instance->pdev = pdev;
7424 instance->host = host;
7425 instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
7426 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
7427
7428 megasas_set_adapter_type(instance);
7429
7430 /*
7431 * Initialize MFI Firmware
7432 */
7433 if (megasas_init_fw(instance))
7434 goto fail_init_mfi;
7435
7436 if (instance->requestorId) {
7437 if (instance->PlasmaFW111) {
7438 instance->vf_affiliation_111 =
7439 dma_alloc_coherent(&pdev->dev,
7440 sizeof(struct MR_LD_VF_AFFILIATION_111),
7441 &instance->vf_affiliation_111_h,
7442 GFP_KERNEL);
7443 if (!instance->vf_affiliation_111)
7444 dev_warn(&pdev->dev, "Can't allocate "
7445 "memory for VF affiliation buffer\n");
7446 } else {
7447 instance->vf_affiliation =
7448 dma_alloc_coherent(&pdev->dev,
7449 (MAX_LOGICAL_DRIVES + 1) *
7450 sizeof(struct MR_LD_VF_AFFILIATION),
7451 &instance->vf_affiliation_h,
7452 GFP_KERNEL);
7453 if (!instance->vf_affiliation)
7454 dev_warn(&pdev->dev, "Can't allocate "
7455 "memory for VF affiliation buffer\n");
7456 }
7457 }
7458
7459 /*
7460 * Store instance in PCI softstate
7461 */
7462 pci_set_drvdata(pdev, instance);
7463
7464 /*
7465 * Add this controller to megasas_mgmt_info structure so that it
7466 * can be exported to management applications
7467 */
7468 megasas_mgmt_info.count++;
7469 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
7470 megasas_mgmt_info.max_index++;
7471
7472 /*
7473 * Register with SCSI mid-layer
7474 */
7475 if (megasas_io_attach(instance))
7476 goto fail_io_attach;
7477
7478 instance->unload = 0;
7479 /*
7480 * Trigger SCSI to scan our drives
7481 */
7482 if (!instance->enable_fw_dev_list ||
7483 (instance->host_device_list_buf->count > 0))
7484 scsi_scan_host(host);
7485
7486 /*
7487 * Initiate AEN (Asynchronous Event Notification)
7488 */
7489 if (megasas_start_aen(instance)) {
7490 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n");
7491 goto fail_start_aen;
7492 }
7493
7494 megasas_setup_debugfs(instance);
7495
7496 /* Get current SR-IOV LD/VF affiliation */
7497 if (instance->requestorId)
7498 megasas_get_ld_vf_affiliation(instance, 1);
7499
7500 return 0;
7501
7502 fail_start_aen:
7503 instance->unload = 1;
7504 scsi_remove_host(instance->host);
7505 fail_io_attach:
7506 megasas_mgmt_info.count--;
7507 megasas_mgmt_info.max_index--;
7508 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
7509
7510 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7511 del_timer_sync(&instance->sriov_heartbeat_timer);
7512
7513 instance->instancet->disable_intr(instance);
7514 megasas_destroy_irqs(instance);
7515
7516 if (instance->adapter_type != MFI_SERIES)
7517 megasas_release_fusion(instance);
7518 else
7519 megasas_release_mfi(instance);
7520
7521 if (instance->msix_vectors)
7522 pci_free_irq_vectors(instance->pdev);
7523 instance->msix_vectors = 0;
7524
7525 if (instance->fw_crash_state != UNAVAILABLE)
7526 megasas_free_host_crash_buffer(instance);
7527
7528 if (instance->adapter_type != MFI_SERIES)
7529 megasas_fusion_stop_watchdog(instance);
7530 fail_init_mfi:
7531 scsi_host_put(host);
7532 fail_alloc_instance:
7533 pci_disable_device(pdev);
7534
7535 return -ENODEV;
7536 }
7537
7538 /**
7539 * megasas_flush_cache - Requests FW to flush all its caches
7540 * @instance: Adapter soft state
7541 */
megasas_flush_cache(struct megasas_instance * instance)7542 static void megasas_flush_cache(struct megasas_instance *instance)
7543 {
7544 struct megasas_cmd *cmd;
7545 struct megasas_dcmd_frame *dcmd;
7546
7547 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7548 return;
7549
7550 cmd = megasas_get_cmd(instance);
7551
7552 if (!cmd)
7553 return;
7554
7555 dcmd = &cmd->frame->dcmd;
7556
7557 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7558
7559 dcmd->cmd = MFI_CMD_DCMD;
7560 dcmd->cmd_status = 0x0;
7561 dcmd->sge_count = 0;
7562 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7563 dcmd->timeout = 0;
7564 dcmd->pad_0 = 0;
7565 dcmd->data_xfer_len = 0;
7566 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
7567 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
7568
7569 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7570 != DCMD_SUCCESS) {
7571 dev_err(&instance->pdev->dev,
7572 "return from %s %d\n", __func__, __LINE__);
7573 return;
7574 }
7575
7576 megasas_return_cmd(instance, cmd);
7577 }
7578
7579 /**
7580 * megasas_shutdown_controller - Instructs FW to shutdown the controller
7581 * @instance: Adapter soft state
7582 * @opcode: Shutdown/Hibernate
7583 */
megasas_shutdown_controller(struct megasas_instance * instance,u32 opcode)7584 static void megasas_shutdown_controller(struct megasas_instance *instance,
7585 u32 opcode)
7586 {
7587 struct megasas_cmd *cmd;
7588 struct megasas_dcmd_frame *dcmd;
7589
7590 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7591 return;
7592
7593 cmd = megasas_get_cmd(instance);
7594
7595 if (!cmd)
7596 return;
7597
7598 if (instance->aen_cmd)
7599 megasas_issue_blocked_abort_cmd(instance,
7600 instance->aen_cmd, MFI_IO_TIMEOUT_SECS);
7601 if (instance->map_update_cmd)
7602 megasas_issue_blocked_abort_cmd(instance,
7603 instance->map_update_cmd, MFI_IO_TIMEOUT_SECS);
7604 if (instance->jbod_seq_cmd)
7605 megasas_issue_blocked_abort_cmd(instance,
7606 instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS);
7607
7608 dcmd = &cmd->frame->dcmd;
7609
7610 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7611
7612 dcmd->cmd = MFI_CMD_DCMD;
7613 dcmd->cmd_status = 0x0;
7614 dcmd->sge_count = 0;
7615 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7616 dcmd->timeout = 0;
7617 dcmd->pad_0 = 0;
7618 dcmd->data_xfer_len = 0;
7619 dcmd->opcode = cpu_to_le32(opcode);
7620
7621 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7622 != DCMD_SUCCESS) {
7623 dev_err(&instance->pdev->dev,
7624 "return from %s %d\n", __func__, __LINE__);
7625 return;
7626 }
7627
7628 megasas_return_cmd(instance, cmd);
7629 }
7630
7631 #ifdef CONFIG_PM
7632 /**
7633 * megasas_suspend - driver suspend entry point
7634 * @pdev: PCI device structure
7635 * @state: PCI power state to suspend routine
7636 */
7637 static int
megasas_suspend(struct pci_dev * pdev,pm_message_t state)7638 megasas_suspend(struct pci_dev *pdev, pm_message_t state)
7639 {
7640 struct megasas_instance *instance;
7641
7642 instance = pci_get_drvdata(pdev);
7643
7644 if (!instance)
7645 return 0;
7646
7647 instance->unload = 1;
7648
7649 dev_info(&pdev->dev, "%s is called\n", __func__);
7650
7651 /* Shutdown SR-IOV heartbeat timer */
7652 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7653 del_timer_sync(&instance->sriov_heartbeat_timer);
7654
7655 /* Stop the FW fault detection watchdog */
7656 if (instance->adapter_type != MFI_SERIES)
7657 megasas_fusion_stop_watchdog(instance);
7658
7659 megasas_flush_cache(instance);
7660 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
7661
7662 /* cancel the delayed work if this work still in queue */
7663 if (instance->ev != NULL) {
7664 struct megasas_aen_event *ev = instance->ev;
7665 cancel_delayed_work_sync(&ev->hotplug_work);
7666 instance->ev = NULL;
7667 }
7668
7669 tasklet_kill(&instance->isr_tasklet);
7670
7671 pci_set_drvdata(instance->pdev, instance);
7672 instance->instancet->disable_intr(instance);
7673
7674 megasas_destroy_irqs(instance);
7675
7676 if (instance->msix_vectors)
7677 pci_free_irq_vectors(instance->pdev);
7678
7679 pci_save_state(pdev);
7680 pci_disable_device(pdev);
7681
7682 pci_set_power_state(pdev, pci_choose_state(pdev, state));
7683
7684 return 0;
7685 }
7686
7687 /**
7688 * megasas_resume- driver resume entry point
7689 * @pdev: PCI device structure
7690 */
7691 static int
megasas_resume(struct pci_dev * pdev)7692 megasas_resume(struct pci_dev *pdev)
7693 {
7694 int rval;
7695 struct Scsi_Host *host;
7696 struct megasas_instance *instance;
7697 u32 status_reg;
7698
7699 instance = pci_get_drvdata(pdev);
7700
7701 if (!instance)
7702 return 0;
7703
7704 host = instance->host;
7705 pci_set_power_state(pdev, PCI_D0);
7706 pci_enable_wake(pdev, PCI_D0, 0);
7707 pci_restore_state(pdev);
7708
7709 dev_info(&pdev->dev, "%s is called\n", __func__);
7710 /*
7711 * PCI prepping: enable device set bus mastering and dma mask
7712 */
7713 rval = pci_enable_device_mem(pdev);
7714
7715 if (rval) {
7716 dev_err(&pdev->dev, "Enable device failed\n");
7717 return rval;
7718 }
7719
7720 pci_set_master(pdev);
7721
7722 /*
7723 * We expect the FW state to be READY
7724 */
7725
7726 if (megasas_transition_to_ready(instance, 0)) {
7727 dev_info(&instance->pdev->dev,
7728 "Failed to transition controller to ready from %s!\n",
7729 __func__);
7730 if (instance->adapter_type != MFI_SERIES) {
7731 status_reg =
7732 instance->instancet->read_fw_status_reg(instance);
7733 if (!(status_reg & MFI_RESET_ADAPTER) ||
7734 ((megasas_adp_reset_wait_for_ready
7735 (instance, true, 0)) == FAILED))
7736 goto fail_ready_state;
7737 } else {
7738 atomic_set(&instance->fw_reset_no_pci_access, 1);
7739 instance->instancet->adp_reset
7740 (instance, instance->reg_set);
7741 atomic_set(&instance->fw_reset_no_pci_access, 0);
7742
7743 /* waiting for about 30 seconds before retry */
7744 ssleep(30);
7745
7746 if (megasas_transition_to_ready(instance, 0))
7747 goto fail_ready_state;
7748 }
7749
7750 dev_info(&instance->pdev->dev,
7751 "FW restarted successfully from %s!\n",
7752 __func__);
7753 }
7754 if (megasas_set_dma_mask(instance))
7755 goto fail_set_dma_mask;
7756
7757 /*
7758 * Initialize MFI Firmware
7759 */
7760
7761 atomic_set(&instance->fw_outstanding, 0);
7762 atomic_set(&instance->ldio_outstanding, 0);
7763
7764 /* Now re-enable MSI-X */
7765 if (instance->msix_vectors)
7766 megasas_alloc_irq_vectors(instance);
7767
7768 if (!instance->msix_vectors) {
7769 rval = pci_alloc_irq_vectors(instance->pdev, 1, 1,
7770 PCI_IRQ_LEGACY);
7771 if (rval < 0)
7772 goto fail_reenable_msix;
7773 }
7774
7775 megasas_setup_reply_map(instance);
7776
7777 if (instance->adapter_type != MFI_SERIES) {
7778 megasas_reset_reply_desc(instance);
7779 if (megasas_ioc_init_fusion(instance)) {
7780 megasas_free_cmds(instance);
7781 megasas_free_cmds_fusion(instance);
7782 goto fail_init_mfi;
7783 }
7784 if (!megasas_get_map_info(instance))
7785 megasas_sync_map_info(instance);
7786 } else {
7787 *instance->producer = 0;
7788 *instance->consumer = 0;
7789 if (megasas_issue_init_mfi(instance))
7790 goto fail_init_mfi;
7791 }
7792
7793 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS)
7794 goto fail_init_mfi;
7795
7796 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
7797 (unsigned long)instance);
7798
7799 if (instance->msix_vectors ?
7800 megasas_setup_irqs_msix(instance, 0) :
7801 megasas_setup_irqs_ioapic(instance))
7802 goto fail_init_mfi;
7803
7804 if (instance->adapter_type != MFI_SERIES)
7805 megasas_setup_irq_poll(instance);
7806
7807 /* Re-launch SR-IOV heartbeat timer */
7808 if (instance->requestorId) {
7809 if (!megasas_sriov_start_heartbeat(instance, 0))
7810 megasas_start_timer(instance);
7811 else {
7812 instance->skip_heartbeat_timer_del = 1;
7813 goto fail_init_mfi;
7814 }
7815 }
7816
7817 instance->instancet->enable_intr(instance);
7818 megasas_setup_jbod_map(instance);
7819 instance->unload = 0;
7820
7821 /*
7822 * Initiate AEN (Asynchronous Event Notification)
7823 */
7824 if (megasas_start_aen(instance))
7825 dev_err(&instance->pdev->dev, "Start AEN failed\n");
7826
7827 /* Re-launch FW fault watchdog */
7828 if (instance->adapter_type != MFI_SERIES)
7829 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
7830 goto fail_start_watchdog;
7831
7832 return 0;
7833
7834 fail_start_watchdog:
7835 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7836 del_timer_sync(&instance->sriov_heartbeat_timer);
7837 fail_init_mfi:
7838 megasas_free_ctrl_dma_buffers(instance);
7839 megasas_free_ctrl_mem(instance);
7840 scsi_host_put(host);
7841
7842 fail_reenable_msix:
7843 fail_set_dma_mask:
7844 fail_ready_state:
7845
7846 pci_disable_device(pdev);
7847
7848 return -ENODEV;
7849 }
7850 #else
7851 #define megasas_suspend NULL
7852 #define megasas_resume NULL
7853 #endif
7854
7855 static inline int
megasas_wait_for_adapter_operational(struct megasas_instance * instance)7856 megasas_wait_for_adapter_operational(struct megasas_instance *instance)
7857 {
7858 int wait_time = MEGASAS_RESET_WAIT_TIME * 2;
7859 int i;
7860 u8 adp_state;
7861
7862 for (i = 0; i < wait_time; i++) {
7863 adp_state = atomic_read(&instance->adprecovery);
7864 if ((adp_state == MEGASAS_HBA_OPERATIONAL) ||
7865 (adp_state == MEGASAS_HW_CRITICAL_ERROR))
7866 break;
7867
7868 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL))
7869 dev_notice(&instance->pdev->dev, "waiting for controller reset to finish\n");
7870
7871 msleep(1000);
7872 }
7873
7874 if (adp_state != MEGASAS_HBA_OPERATIONAL) {
7875 dev_info(&instance->pdev->dev,
7876 "%s HBA failed to become operational, adp_state %d\n",
7877 __func__, adp_state);
7878 return 1;
7879 }
7880
7881 return 0;
7882 }
7883
7884 /**
7885 * megasas_detach_one - PCI hot"un"plug entry point
7886 * @pdev: PCI device structure
7887 */
megasas_detach_one(struct pci_dev * pdev)7888 static void megasas_detach_one(struct pci_dev *pdev)
7889 {
7890 int i;
7891 struct Scsi_Host *host;
7892 struct megasas_instance *instance;
7893 struct fusion_context *fusion;
7894 u32 pd_seq_map_sz;
7895
7896 instance = pci_get_drvdata(pdev);
7897
7898 if (!instance)
7899 return;
7900
7901 host = instance->host;
7902 fusion = instance->ctrl_context;
7903
7904 /* Shutdown SR-IOV heartbeat timer */
7905 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7906 del_timer_sync(&instance->sriov_heartbeat_timer);
7907
7908 /* Stop the FW fault detection watchdog */
7909 if (instance->adapter_type != MFI_SERIES)
7910 megasas_fusion_stop_watchdog(instance);
7911
7912 if (instance->fw_crash_state != UNAVAILABLE)
7913 megasas_free_host_crash_buffer(instance);
7914 scsi_remove_host(instance->host);
7915 instance->unload = 1;
7916
7917 if (megasas_wait_for_adapter_operational(instance))
7918 goto skip_firing_dcmds;
7919
7920 megasas_flush_cache(instance);
7921 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7922
7923 skip_firing_dcmds:
7924 /* cancel the delayed work if this work still in queue*/
7925 if (instance->ev != NULL) {
7926 struct megasas_aen_event *ev = instance->ev;
7927 cancel_delayed_work_sync(&ev->hotplug_work);
7928 instance->ev = NULL;
7929 }
7930
7931 /* cancel all wait events */
7932 wake_up_all(&instance->int_cmd_wait_q);
7933
7934 tasklet_kill(&instance->isr_tasklet);
7935
7936 /*
7937 * Take the instance off the instance array. Note that we will not
7938 * decrement the max_index. We let this array be sparse array
7939 */
7940 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
7941 if (megasas_mgmt_info.instance[i] == instance) {
7942 megasas_mgmt_info.count--;
7943 megasas_mgmt_info.instance[i] = NULL;
7944
7945 break;
7946 }
7947 }
7948
7949 instance->instancet->disable_intr(instance);
7950
7951 megasas_destroy_irqs(instance);
7952
7953 if (instance->msix_vectors)
7954 pci_free_irq_vectors(instance->pdev);
7955
7956 if (instance->adapter_type >= VENTURA_SERIES) {
7957 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i)
7958 kfree(fusion->stream_detect_by_ld[i]);
7959 kfree(fusion->stream_detect_by_ld);
7960 fusion->stream_detect_by_ld = NULL;
7961 }
7962
7963
7964 if (instance->adapter_type != MFI_SERIES) {
7965 megasas_release_fusion(instance);
7966 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
7967 (sizeof(struct MR_PD_CFG_SEQ) *
7968 (MAX_PHYSICAL_DEVICES - 1));
7969 for (i = 0; i < 2 ; i++) {
7970 if (fusion->ld_map[i])
7971 dma_free_coherent(&instance->pdev->dev,
7972 fusion->max_map_sz,
7973 fusion->ld_map[i],
7974 fusion->ld_map_phys[i]);
7975 if (fusion->ld_drv_map[i]) {
7976 if (is_vmalloc_addr(fusion->ld_drv_map[i]))
7977 vfree(fusion->ld_drv_map[i]);
7978 else
7979 free_pages((ulong)fusion->ld_drv_map[i],
7980 fusion->drv_map_pages);
7981 }
7982
7983 if (fusion->pd_seq_sync[i])
7984 dma_free_coherent(&instance->pdev->dev,
7985 pd_seq_map_sz,
7986 fusion->pd_seq_sync[i],
7987 fusion->pd_seq_phys[i]);
7988 }
7989 } else {
7990 megasas_release_mfi(instance);
7991 }
7992
7993 if (instance->vf_affiliation)
7994 dma_free_coherent(&pdev->dev, (MAX_LOGICAL_DRIVES + 1) *
7995 sizeof(struct MR_LD_VF_AFFILIATION),
7996 instance->vf_affiliation,
7997 instance->vf_affiliation_h);
7998
7999 if (instance->vf_affiliation_111)
8000 dma_free_coherent(&pdev->dev,
8001 sizeof(struct MR_LD_VF_AFFILIATION_111),
8002 instance->vf_affiliation_111,
8003 instance->vf_affiliation_111_h);
8004
8005 if (instance->hb_host_mem)
8006 dma_free_coherent(&pdev->dev, sizeof(struct MR_CTRL_HB_HOST_MEM),
8007 instance->hb_host_mem,
8008 instance->hb_host_mem_h);
8009
8010 megasas_free_ctrl_dma_buffers(instance);
8011
8012 megasas_free_ctrl_mem(instance);
8013
8014 megasas_destroy_debugfs(instance);
8015
8016 scsi_host_put(host);
8017
8018 pci_disable_device(pdev);
8019 }
8020
8021 /**
8022 * megasas_shutdown - Shutdown entry point
8023 * @pdev: Generic device structure
8024 */
megasas_shutdown(struct pci_dev * pdev)8025 static void megasas_shutdown(struct pci_dev *pdev)
8026 {
8027 struct megasas_instance *instance = pci_get_drvdata(pdev);
8028
8029 if (!instance)
8030 return;
8031
8032 instance->unload = 1;
8033
8034 if (megasas_wait_for_adapter_operational(instance))
8035 goto skip_firing_dcmds;
8036
8037 megasas_flush_cache(instance);
8038 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
8039
8040 skip_firing_dcmds:
8041 instance->instancet->disable_intr(instance);
8042 megasas_destroy_irqs(instance);
8043
8044 if (instance->msix_vectors)
8045 pci_free_irq_vectors(instance->pdev);
8046 }
8047
8048 /*
8049 * megasas_mgmt_open - char node "open" entry point
8050 * @inode: char node inode
8051 * @filep: char node file
8052 */
megasas_mgmt_open(struct inode * inode,struct file * filep)8053 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
8054 {
8055 /*
8056 * Allow only those users with admin rights
8057 */
8058 if (!capable(CAP_SYS_ADMIN))
8059 return -EACCES;
8060
8061 return 0;
8062 }
8063
8064 /*
8065 * megasas_mgmt_fasync - Async notifier registration from applications
8066 * @fd: char node file descriptor number
8067 * @filep: char node file
8068 * @mode: notifier on/off
8069 *
8070 * This function adds the calling process to a driver global queue. When an
8071 * event occurs, SIGIO will be sent to all processes in this queue.
8072 */
megasas_mgmt_fasync(int fd,struct file * filep,int mode)8073 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
8074 {
8075 int rc;
8076
8077 mutex_lock(&megasas_async_queue_mutex);
8078
8079 rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
8080
8081 mutex_unlock(&megasas_async_queue_mutex);
8082
8083 if (rc >= 0) {
8084 /* For sanity check when we get ioctl */
8085 filep->private_data = filep;
8086 return 0;
8087 }
8088
8089 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
8090
8091 return rc;
8092 }
8093
8094 /*
8095 * megasas_mgmt_poll - char node "poll" entry point
8096 * @filep: char node file
8097 * @wait: Events to poll for
8098 */
megasas_mgmt_poll(struct file * file,poll_table * wait)8099 static __poll_t megasas_mgmt_poll(struct file *file, poll_table *wait)
8100 {
8101 __poll_t mask;
8102 unsigned long flags;
8103
8104 poll_wait(file, &megasas_poll_wait, wait);
8105 spin_lock_irqsave(&poll_aen_lock, flags);
8106 if (megasas_poll_wait_aen)
8107 mask = (EPOLLIN | EPOLLRDNORM);
8108 else
8109 mask = 0;
8110 megasas_poll_wait_aen = 0;
8111 spin_unlock_irqrestore(&poll_aen_lock, flags);
8112 return mask;
8113 }
8114
8115 /*
8116 * megasas_set_crash_dump_params_ioctl:
8117 * Send CRASH_DUMP_MODE DCMD to all controllers
8118 * @cmd: MFI command frame
8119 */
8120
megasas_set_crash_dump_params_ioctl(struct megasas_cmd * cmd)8121 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd)
8122 {
8123 struct megasas_instance *local_instance;
8124 int i, error = 0;
8125 int crash_support;
8126
8127 crash_support = cmd->frame->dcmd.mbox.w[0];
8128
8129 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
8130 local_instance = megasas_mgmt_info.instance[i];
8131 if (local_instance && local_instance->crash_dump_drv_support) {
8132 if ((atomic_read(&local_instance->adprecovery) ==
8133 MEGASAS_HBA_OPERATIONAL) &&
8134 !megasas_set_crash_dump_params(local_instance,
8135 crash_support)) {
8136 local_instance->crash_dump_app_support =
8137 crash_support;
8138 dev_info(&local_instance->pdev->dev,
8139 "Application firmware crash "
8140 "dump mode set success\n");
8141 error = 0;
8142 } else {
8143 dev_info(&local_instance->pdev->dev,
8144 "Application firmware crash "
8145 "dump mode set failed\n");
8146 error = -1;
8147 }
8148 }
8149 }
8150 return error;
8151 }
8152
8153 /**
8154 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
8155 * @instance: Adapter soft state
8156 * @user_ioc: User's ioctl packet
8157 * @ioc: ioctl packet
8158 */
8159 static int
megasas_mgmt_fw_ioctl(struct megasas_instance * instance,struct megasas_iocpacket __user * user_ioc,struct megasas_iocpacket * ioc)8160 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
8161 struct megasas_iocpacket __user * user_ioc,
8162 struct megasas_iocpacket *ioc)
8163 {
8164 struct megasas_sge64 *kern_sge64 = NULL;
8165 struct megasas_sge32 *kern_sge32 = NULL;
8166 struct megasas_cmd *cmd;
8167 void *kbuff_arr[MAX_IOCTL_SGE];
8168 dma_addr_t buf_handle = 0;
8169 int error = 0, i;
8170 void *sense = NULL;
8171 dma_addr_t sense_handle;
8172 void *sense_ptr;
8173 u32 opcode = 0;
8174 int ret = DCMD_SUCCESS;
8175
8176 memset(kbuff_arr, 0, sizeof(kbuff_arr));
8177
8178 if (ioc->sge_count > MAX_IOCTL_SGE) {
8179 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] > max limit [%d]\n",
8180 ioc->sge_count, MAX_IOCTL_SGE);
8181 return -EINVAL;
8182 }
8183
8184 if ((ioc->frame.hdr.cmd >= MFI_CMD_OP_COUNT) ||
8185 ((ioc->frame.hdr.cmd == MFI_CMD_NVME) &&
8186 !instance->support_nvme_passthru) ||
8187 ((ioc->frame.hdr.cmd == MFI_CMD_TOOLBOX) &&
8188 !instance->support_pci_lane_margining)) {
8189 dev_err(&instance->pdev->dev,
8190 "Received invalid ioctl command 0x%x\n",
8191 ioc->frame.hdr.cmd);
8192 return -ENOTSUPP;
8193 }
8194
8195 cmd = megasas_get_cmd(instance);
8196 if (!cmd) {
8197 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n");
8198 return -ENOMEM;
8199 }
8200
8201 /*
8202 * User's IOCTL packet has 2 frames (maximum). Copy those two
8203 * frames into our cmd's frames. cmd->frame's context will get
8204 * overwritten when we copy from user's frames. So set that value
8205 * alone separately
8206 */
8207 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
8208 cmd->frame->hdr.context = cpu_to_le32(cmd->index);
8209 cmd->frame->hdr.pad_0 = 0;
8210
8211 cmd->frame->hdr.flags &= (~MFI_FRAME_IEEE);
8212
8213 if (instance->consistent_mask_64bit)
8214 cmd->frame->hdr.flags |= cpu_to_le16((MFI_FRAME_SGL64 |
8215 MFI_FRAME_SENSE64));
8216 else
8217 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_SGL64 |
8218 MFI_FRAME_SENSE64));
8219
8220 if (cmd->frame->hdr.cmd == MFI_CMD_DCMD)
8221 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
8222
8223 if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
8224 mutex_lock(&instance->reset_mutex);
8225 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) {
8226 megasas_return_cmd(instance, cmd);
8227 mutex_unlock(&instance->reset_mutex);
8228 return -1;
8229 }
8230 mutex_unlock(&instance->reset_mutex);
8231 }
8232
8233 if (opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) {
8234 error = megasas_set_crash_dump_params_ioctl(cmd);
8235 megasas_return_cmd(instance, cmd);
8236 return error;
8237 }
8238
8239 /*
8240 * The management interface between applications and the fw uses
8241 * MFI frames. E.g, RAID configuration changes, LD property changes
8242 * etc are accomplishes through different kinds of MFI frames. The
8243 * driver needs to care only about substituting user buffers with
8244 * kernel buffers in SGLs. The location of SGL is embedded in the
8245 * struct iocpacket itself.
8246 */
8247 if (instance->consistent_mask_64bit)
8248 kern_sge64 = (struct megasas_sge64 *)
8249 ((unsigned long)cmd->frame + ioc->sgl_off);
8250 else
8251 kern_sge32 = (struct megasas_sge32 *)
8252 ((unsigned long)cmd->frame + ioc->sgl_off);
8253
8254 /*
8255 * For each user buffer, create a mirror buffer and copy in
8256 */
8257 for (i = 0; i < ioc->sge_count; i++) {
8258 if (!ioc->sgl[i].iov_len)
8259 continue;
8260
8261 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
8262 ioc->sgl[i].iov_len,
8263 &buf_handle, GFP_KERNEL);
8264 if (!kbuff_arr[i]) {
8265 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc "
8266 "kernel SGL buffer for IOCTL\n");
8267 error = -ENOMEM;
8268 goto out;
8269 }
8270
8271 /*
8272 * We don't change the dma_coherent_mask, so
8273 * dma_alloc_coherent only returns 32bit addresses
8274 */
8275 if (instance->consistent_mask_64bit) {
8276 kern_sge64[i].phys_addr = cpu_to_le64(buf_handle);
8277 kern_sge64[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8278 } else {
8279 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
8280 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8281 }
8282
8283 /*
8284 * We created a kernel buffer corresponding to the
8285 * user buffer. Now copy in from the user buffer
8286 */
8287 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
8288 (u32) (ioc->sgl[i].iov_len))) {
8289 error = -EFAULT;
8290 goto out;
8291 }
8292 }
8293
8294 if (ioc->sense_len) {
8295 /* make sure the pointer is part of the frame */
8296 if (ioc->sense_off >
8297 (sizeof(union megasas_frame) - sizeof(__le64))) {
8298 error = -EINVAL;
8299 goto out;
8300 }
8301
8302 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
8303 &sense_handle, GFP_KERNEL);
8304 if (!sense) {
8305 error = -ENOMEM;
8306 goto out;
8307 }
8308
8309 /* always store 64 bits regardless of addressing */
8310 sense_ptr = (void *)cmd->frame + ioc->sense_off;
8311 put_unaligned_le64(sense_handle, sense_ptr);
8312 }
8313
8314 /*
8315 * Set the sync_cmd flag so that the ISR knows not to complete this
8316 * cmd to the SCSI mid-layer
8317 */
8318 cmd->sync_cmd = 1;
8319
8320 ret = megasas_issue_blocked_cmd(instance, cmd, 0);
8321 switch (ret) {
8322 case DCMD_INIT:
8323 case DCMD_BUSY:
8324 cmd->sync_cmd = 0;
8325 dev_err(&instance->pdev->dev,
8326 "return -EBUSY from %s %d cmd 0x%x opcode 0x%x cmd->cmd_status_drv 0x%x\n",
8327 __func__, __LINE__, cmd->frame->hdr.cmd, opcode,
8328 cmd->cmd_status_drv);
8329 error = -EBUSY;
8330 goto out;
8331 }
8332
8333 cmd->sync_cmd = 0;
8334
8335 if (instance->unload == 1) {
8336 dev_info(&instance->pdev->dev, "Driver unload is in progress "
8337 "don't submit data to application\n");
8338 goto out;
8339 }
8340 /*
8341 * copy out the kernel buffers to user buffers
8342 */
8343 for (i = 0; i < ioc->sge_count; i++) {
8344 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
8345 ioc->sgl[i].iov_len)) {
8346 error = -EFAULT;
8347 goto out;
8348 }
8349 }
8350
8351 /*
8352 * copy out the sense
8353 */
8354 if (ioc->sense_len) {
8355 /*
8356 * sense_ptr points to the location that has the user
8357 * sense buffer address
8358 */
8359 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
8360 ioc->sense_off);
8361
8362 if (copy_to_user((void __user *)((unsigned long)
8363 get_unaligned((unsigned long *)sense_ptr)),
8364 sense, ioc->sense_len)) {
8365 dev_err(&instance->pdev->dev, "Failed to copy out to user "
8366 "sense data\n");
8367 error = -EFAULT;
8368 goto out;
8369 }
8370 }
8371
8372 /*
8373 * copy the status codes returned by the fw
8374 */
8375 if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
8376 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
8377 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n");
8378 error = -EFAULT;
8379 }
8380
8381 out:
8382 if (sense) {
8383 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
8384 sense, sense_handle);
8385 }
8386
8387 for (i = 0; i < ioc->sge_count; i++) {
8388 if (kbuff_arr[i]) {
8389 if (instance->consistent_mask_64bit)
8390 dma_free_coherent(&instance->pdev->dev,
8391 le32_to_cpu(kern_sge64[i].length),
8392 kbuff_arr[i],
8393 le64_to_cpu(kern_sge64[i].phys_addr));
8394 else
8395 dma_free_coherent(&instance->pdev->dev,
8396 le32_to_cpu(kern_sge32[i].length),
8397 kbuff_arr[i],
8398 le32_to_cpu(kern_sge32[i].phys_addr));
8399 kbuff_arr[i] = NULL;
8400 }
8401 }
8402
8403 megasas_return_cmd(instance, cmd);
8404 return error;
8405 }
8406
megasas_mgmt_ioctl_fw(struct file * file,unsigned long arg)8407 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
8408 {
8409 struct megasas_iocpacket __user *user_ioc =
8410 (struct megasas_iocpacket __user *)arg;
8411 struct megasas_iocpacket *ioc;
8412 struct megasas_instance *instance;
8413 int error;
8414
8415 ioc = memdup_user(user_ioc, sizeof(*ioc));
8416 if (IS_ERR(ioc))
8417 return PTR_ERR(ioc);
8418
8419 instance = megasas_lookup_instance(ioc->host_no);
8420 if (!instance) {
8421 error = -ENODEV;
8422 goto out_kfree_ioc;
8423 }
8424
8425 /* Block ioctls in VF mode */
8426 if (instance->requestorId && !allow_vf_ioctls) {
8427 error = -ENODEV;
8428 goto out_kfree_ioc;
8429 }
8430
8431 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8432 dev_err(&instance->pdev->dev, "Controller in crit error\n");
8433 error = -ENODEV;
8434 goto out_kfree_ioc;
8435 }
8436
8437 if (instance->unload == 1) {
8438 error = -ENODEV;
8439 goto out_kfree_ioc;
8440 }
8441
8442 if (down_interruptible(&instance->ioctl_sem)) {
8443 error = -ERESTARTSYS;
8444 goto out_kfree_ioc;
8445 }
8446
8447 if (megasas_wait_for_adapter_operational(instance)) {
8448 error = -ENODEV;
8449 goto out_up;
8450 }
8451
8452 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
8453 out_up:
8454 up(&instance->ioctl_sem);
8455
8456 out_kfree_ioc:
8457 kfree(ioc);
8458 return error;
8459 }
8460
megasas_mgmt_ioctl_aen(struct file * file,unsigned long arg)8461 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
8462 {
8463 struct megasas_instance *instance;
8464 struct megasas_aen aen;
8465 int error;
8466
8467 if (file->private_data != file) {
8468 printk(KERN_DEBUG "megasas: fasync_helper was not "
8469 "called first\n");
8470 return -EINVAL;
8471 }
8472
8473 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
8474 return -EFAULT;
8475
8476 instance = megasas_lookup_instance(aen.host_no);
8477
8478 if (!instance)
8479 return -ENODEV;
8480
8481 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8482 return -ENODEV;
8483 }
8484
8485 if (instance->unload == 1) {
8486 return -ENODEV;
8487 }
8488
8489 if (megasas_wait_for_adapter_operational(instance))
8490 return -ENODEV;
8491
8492 mutex_lock(&instance->reset_mutex);
8493 error = megasas_register_aen(instance, aen.seq_num,
8494 aen.class_locale_word);
8495 mutex_unlock(&instance->reset_mutex);
8496 return error;
8497 }
8498
8499 /**
8500 * megasas_mgmt_ioctl - char node ioctl entry point
8501 * @file: char device file pointer
8502 * @cmd: ioctl command
8503 * @arg: ioctl command arguments address
8504 */
8505 static long
megasas_mgmt_ioctl(struct file * file,unsigned int cmd,unsigned long arg)8506 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
8507 {
8508 switch (cmd) {
8509 case MEGASAS_IOC_FIRMWARE:
8510 return megasas_mgmt_ioctl_fw(file, arg);
8511
8512 case MEGASAS_IOC_GET_AEN:
8513 return megasas_mgmt_ioctl_aen(file, arg);
8514 }
8515
8516 return -ENOTTY;
8517 }
8518
8519 #ifdef CONFIG_COMPAT
megasas_mgmt_compat_ioctl_fw(struct file * file,unsigned long arg)8520 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
8521 {
8522 struct compat_megasas_iocpacket __user *cioc =
8523 (struct compat_megasas_iocpacket __user *)arg;
8524 struct megasas_iocpacket __user *ioc =
8525 compat_alloc_user_space(sizeof(struct megasas_iocpacket));
8526 int i;
8527 int error = 0;
8528 compat_uptr_t ptr;
8529 u32 local_sense_off;
8530 u32 local_sense_len;
8531 u32 user_sense_off;
8532
8533 if (clear_user(ioc, sizeof(*ioc)))
8534 return -EFAULT;
8535
8536 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
8537 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
8538 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
8539 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
8540 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
8541 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
8542 return -EFAULT;
8543
8544 /*
8545 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
8546 * sense_len is not null, so prepare the 64bit value under
8547 * the same condition.
8548 */
8549 if (get_user(local_sense_off, &ioc->sense_off) ||
8550 get_user(local_sense_len, &ioc->sense_len) ||
8551 get_user(user_sense_off, &cioc->sense_off))
8552 return -EFAULT;
8553
8554 if (local_sense_off != user_sense_off)
8555 return -EINVAL;
8556
8557 if (local_sense_len) {
8558 void __user **sense_ioc_ptr =
8559 (void __user **)((u8 *)((unsigned long)&ioc->frame.raw) + local_sense_off);
8560 compat_uptr_t *sense_cioc_ptr =
8561 (compat_uptr_t *)(((unsigned long)&cioc->frame.raw) + user_sense_off);
8562 if (get_user(ptr, sense_cioc_ptr) ||
8563 put_user(compat_ptr(ptr), sense_ioc_ptr))
8564 return -EFAULT;
8565 }
8566
8567 for (i = 0; i < MAX_IOCTL_SGE; i++) {
8568 if (get_user(ptr, &cioc->sgl[i].iov_base) ||
8569 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
8570 copy_in_user(&ioc->sgl[i].iov_len,
8571 &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
8572 return -EFAULT;
8573 }
8574
8575 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);
8576
8577 if (copy_in_user(&cioc->frame.hdr.cmd_status,
8578 &ioc->frame.hdr.cmd_status, sizeof(u8))) {
8579 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
8580 return -EFAULT;
8581 }
8582 return error;
8583 }
8584
8585 static long
megasas_mgmt_compat_ioctl(struct file * file,unsigned int cmd,unsigned long arg)8586 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
8587 unsigned long arg)
8588 {
8589 switch (cmd) {
8590 case MEGASAS_IOC_FIRMWARE32:
8591 return megasas_mgmt_compat_ioctl_fw(file, arg);
8592 case MEGASAS_IOC_GET_AEN:
8593 return megasas_mgmt_ioctl_aen(file, arg);
8594 }
8595
8596 return -ENOTTY;
8597 }
8598 #endif
8599
8600 /*
8601 * File operations structure for management interface
8602 */
8603 static const struct file_operations megasas_mgmt_fops = {
8604 .owner = THIS_MODULE,
8605 .open = megasas_mgmt_open,
8606 .fasync = megasas_mgmt_fasync,
8607 .unlocked_ioctl = megasas_mgmt_ioctl,
8608 .poll = megasas_mgmt_poll,
8609 #ifdef CONFIG_COMPAT
8610 .compat_ioctl = megasas_mgmt_compat_ioctl,
8611 #endif
8612 .llseek = noop_llseek,
8613 };
8614
8615 /*
8616 * PCI hotplug support registration structure
8617 */
8618 static struct pci_driver megasas_pci_driver = {
8619
8620 .name = "megaraid_sas",
8621 .id_table = megasas_pci_table,
8622 .probe = megasas_probe_one,
8623 .remove = megasas_detach_one,
8624 .suspend = megasas_suspend,
8625 .resume = megasas_resume,
8626 .shutdown = megasas_shutdown,
8627 };
8628
8629 /*
8630 * Sysfs driver attributes
8631 */
version_show(struct device_driver * dd,char * buf)8632 static ssize_t version_show(struct device_driver *dd, char *buf)
8633 {
8634 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
8635 MEGASAS_VERSION);
8636 }
8637 static DRIVER_ATTR_RO(version);
8638
release_date_show(struct device_driver * dd,char * buf)8639 static ssize_t release_date_show(struct device_driver *dd, char *buf)
8640 {
8641 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
8642 MEGASAS_RELDATE);
8643 }
8644 static DRIVER_ATTR_RO(release_date);
8645
support_poll_for_event_show(struct device_driver * dd,char * buf)8646 static ssize_t support_poll_for_event_show(struct device_driver *dd, char *buf)
8647 {
8648 return sprintf(buf, "%u\n", support_poll_for_event);
8649 }
8650 static DRIVER_ATTR_RO(support_poll_for_event);
8651
support_device_change_show(struct device_driver * dd,char * buf)8652 static ssize_t support_device_change_show(struct device_driver *dd, char *buf)
8653 {
8654 return sprintf(buf, "%u\n", support_device_change);
8655 }
8656 static DRIVER_ATTR_RO(support_device_change);
8657
dbg_lvl_show(struct device_driver * dd,char * buf)8658 static ssize_t dbg_lvl_show(struct device_driver *dd, char *buf)
8659 {
8660 return sprintf(buf, "%u\n", megasas_dbg_lvl);
8661 }
8662
dbg_lvl_store(struct device_driver * dd,const char * buf,size_t count)8663 static ssize_t dbg_lvl_store(struct device_driver *dd, const char *buf,
8664 size_t count)
8665 {
8666 int retval = count;
8667
8668 if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) {
8669 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
8670 retval = -EINVAL;
8671 }
8672 return retval;
8673 }
8674 static DRIVER_ATTR_RW(dbg_lvl);
8675
8676 static ssize_t
support_nvme_encapsulation_show(struct device_driver * dd,char * buf)8677 support_nvme_encapsulation_show(struct device_driver *dd, char *buf)
8678 {
8679 return sprintf(buf, "%u\n", support_nvme_encapsulation);
8680 }
8681
8682 static DRIVER_ATTR_RO(support_nvme_encapsulation);
8683
8684 static ssize_t
support_pci_lane_margining_show(struct device_driver * dd,char * buf)8685 support_pci_lane_margining_show(struct device_driver *dd, char *buf)
8686 {
8687 return sprintf(buf, "%u\n", support_pci_lane_margining);
8688 }
8689
8690 static DRIVER_ATTR_RO(support_pci_lane_margining);
8691
megasas_remove_scsi_device(struct scsi_device * sdev)8692 static inline void megasas_remove_scsi_device(struct scsi_device *sdev)
8693 {
8694 sdev_printk(KERN_INFO, sdev, "SCSI device is removed\n");
8695 scsi_remove_device(sdev);
8696 scsi_device_put(sdev);
8697 }
8698
8699 /**
8700 * megasas_update_device_list - Update the PD and LD device list from FW
8701 * after an AEN event notification
8702 * @instance: Adapter soft state
8703 * @event_type: Indicates type of event (PD or LD event)
8704 *
8705 * @return: Success or failure
8706 *
8707 * Issue DCMDs to Firmware to update the internal device list in driver.
8708 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
8709 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
8710 */
8711 static
megasas_update_device_list(struct megasas_instance * instance,int event_type)8712 int megasas_update_device_list(struct megasas_instance *instance,
8713 int event_type)
8714 {
8715 int dcmd_ret = DCMD_SUCCESS;
8716
8717 if (instance->enable_fw_dev_list) {
8718 dcmd_ret = megasas_host_device_list_query(instance, false);
8719 if (dcmd_ret != DCMD_SUCCESS)
8720 goto out;
8721 } else {
8722 if (event_type & SCAN_PD_CHANNEL) {
8723 dcmd_ret = megasas_get_pd_list(instance);
8724
8725 if (dcmd_ret != DCMD_SUCCESS)
8726 goto out;
8727 }
8728
8729 if (event_type & SCAN_VD_CHANNEL) {
8730 if (!instance->requestorId ||
8731 (instance->requestorId &&
8732 megasas_get_ld_vf_affiliation(instance, 0))) {
8733 dcmd_ret = megasas_ld_list_query(instance,
8734 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST);
8735 if (dcmd_ret != DCMD_SUCCESS)
8736 goto out;
8737 }
8738 }
8739 }
8740
8741 out:
8742 return dcmd_ret;
8743 }
8744
8745 /**
8746 * megasas_add_remove_devices - Add/remove devices to SCSI mid-layer
8747 * after an AEN event notification
8748 * @instance: Adapter soft state
8749 * @scan_type: Indicates type of devices (PD/LD) to add
8750 * @return void
8751 */
8752 static
megasas_add_remove_devices(struct megasas_instance * instance,int scan_type)8753 void megasas_add_remove_devices(struct megasas_instance *instance,
8754 int scan_type)
8755 {
8756 int i, j;
8757 u16 pd_index = 0;
8758 u16 ld_index = 0;
8759 u16 channel = 0, id = 0;
8760 struct Scsi_Host *host;
8761 struct scsi_device *sdev1;
8762 struct MR_HOST_DEVICE_LIST *targetid_list = NULL;
8763 struct MR_HOST_DEVICE_LIST_ENTRY *targetid_entry = NULL;
8764
8765 host = instance->host;
8766
8767 if (instance->enable_fw_dev_list) {
8768 targetid_list = instance->host_device_list_buf;
8769 for (i = 0; i < targetid_list->count; i++) {
8770 targetid_entry = &targetid_list->host_device_list[i];
8771 if (targetid_entry->flags.u.bits.is_sys_pd) {
8772 channel = le16_to_cpu(targetid_entry->target_id) /
8773 MEGASAS_MAX_DEV_PER_CHANNEL;
8774 id = le16_to_cpu(targetid_entry->target_id) %
8775 MEGASAS_MAX_DEV_PER_CHANNEL;
8776 } else {
8777 channel = MEGASAS_MAX_PD_CHANNELS +
8778 (le16_to_cpu(targetid_entry->target_id) /
8779 MEGASAS_MAX_DEV_PER_CHANNEL);
8780 id = le16_to_cpu(targetid_entry->target_id) %
8781 MEGASAS_MAX_DEV_PER_CHANNEL;
8782 }
8783 sdev1 = scsi_device_lookup(host, channel, id, 0);
8784 if (!sdev1) {
8785 scsi_add_device(host, channel, id, 0);
8786 } else {
8787 scsi_device_put(sdev1);
8788 }
8789 }
8790 }
8791
8792 if (scan_type & SCAN_PD_CHANNEL) {
8793 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
8794 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8795 pd_index = i * MEGASAS_MAX_DEV_PER_CHANNEL + j;
8796 sdev1 = scsi_device_lookup(host, i, j, 0);
8797 if (instance->pd_list[pd_index].driveState ==
8798 MR_PD_STATE_SYSTEM) {
8799 if (!sdev1)
8800 scsi_add_device(host, i, j, 0);
8801 else
8802 scsi_device_put(sdev1);
8803 } else {
8804 if (sdev1)
8805 megasas_remove_scsi_device(sdev1);
8806 }
8807 }
8808 }
8809 }
8810
8811 if (scan_type & SCAN_VD_CHANNEL) {
8812 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
8813 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8814 ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
8815 sdev1 = scsi_device_lookup(host,
8816 MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8817 if (instance->ld_ids[ld_index] != 0xff) {
8818 if (!sdev1)
8819 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8820 else
8821 scsi_device_put(sdev1);
8822 } else {
8823 if (sdev1)
8824 megasas_remove_scsi_device(sdev1);
8825 }
8826 }
8827 }
8828 }
8829
8830 }
8831
8832 static void
megasas_aen_polling(struct work_struct * work)8833 megasas_aen_polling(struct work_struct *work)
8834 {
8835 struct megasas_aen_event *ev =
8836 container_of(work, struct megasas_aen_event, hotplug_work.work);
8837 struct megasas_instance *instance = ev->instance;
8838 union megasas_evt_class_locale class_locale;
8839 int event_type = 0;
8840 u32 seq_num;
8841 u16 ld_target_id;
8842 int error;
8843 u8 dcmd_ret = DCMD_SUCCESS;
8844 struct scsi_device *sdev1;
8845
8846 if (!instance) {
8847 printk(KERN_ERR "invalid instance!\n");
8848 kfree(ev);
8849 return;
8850 }
8851
8852 /* Don't run the event workqueue thread if OCR is running */
8853 mutex_lock(&instance->reset_mutex);
8854
8855 instance->ev = NULL;
8856 if (instance->evt_detail) {
8857 megasas_decode_evt(instance);
8858
8859 switch (le32_to_cpu(instance->evt_detail->code)) {
8860
8861 case MR_EVT_PD_INSERTED:
8862 case MR_EVT_PD_REMOVED:
8863 event_type = SCAN_PD_CHANNEL;
8864 break;
8865
8866 case MR_EVT_LD_OFFLINE:
8867 case MR_EVT_LD_DELETED:
8868 ld_target_id = instance->evt_detail->args.ld.target_id;
8869 sdev1 = scsi_device_lookup(instance->host,
8870 MEGASAS_MAX_PD_CHANNELS +
8871 (ld_target_id / MEGASAS_MAX_DEV_PER_CHANNEL),
8872 (ld_target_id - MEGASAS_MAX_DEV_PER_CHANNEL),
8873 0);
8874 if (sdev1)
8875 megasas_remove_scsi_device(sdev1);
8876
8877 event_type = SCAN_VD_CHANNEL;
8878 break;
8879 case MR_EVT_LD_CREATED:
8880 event_type = SCAN_VD_CHANNEL;
8881 break;
8882
8883 case MR_EVT_CFG_CLEARED:
8884 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
8885 case MR_EVT_FOREIGN_CFG_IMPORTED:
8886 case MR_EVT_LD_STATE_CHANGE:
8887 event_type = SCAN_PD_CHANNEL | SCAN_VD_CHANNEL;
8888 dev_info(&instance->pdev->dev, "scanning for scsi%d...\n",
8889 instance->host->host_no);
8890 break;
8891
8892 case MR_EVT_CTRL_PROP_CHANGED:
8893 dcmd_ret = megasas_get_ctrl_info(instance);
8894 if (dcmd_ret == DCMD_SUCCESS &&
8895 instance->snapdump_wait_time) {
8896 megasas_get_snapdump_properties(instance);
8897 dev_info(&instance->pdev->dev,
8898 "Snap dump wait time\t: %d\n",
8899 instance->snapdump_wait_time);
8900 }
8901 break;
8902 default:
8903 event_type = 0;
8904 break;
8905 }
8906 } else {
8907 dev_err(&instance->pdev->dev, "invalid evt_detail!\n");
8908 mutex_unlock(&instance->reset_mutex);
8909 kfree(ev);
8910 return;
8911 }
8912
8913 if (event_type)
8914 dcmd_ret = megasas_update_device_list(instance, event_type);
8915
8916 mutex_unlock(&instance->reset_mutex);
8917
8918 if (event_type && dcmd_ret == DCMD_SUCCESS)
8919 megasas_add_remove_devices(instance, event_type);
8920
8921 if (dcmd_ret == DCMD_SUCCESS)
8922 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
8923 else
8924 seq_num = instance->last_seq_num;
8925
8926 /* Register AEN with FW for latest sequence number plus 1 */
8927 class_locale.members.reserved = 0;
8928 class_locale.members.locale = MR_EVT_LOCALE_ALL;
8929 class_locale.members.class = MR_EVT_CLASS_DEBUG;
8930
8931 if (instance->aen_cmd != NULL) {
8932 kfree(ev);
8933 return;
8934 }
8935
8936 mutex_lock(&instance->reset_mutex);
8937 error = megasas_register_aen(instance, seq_num,
8938 class_locale.word);
8939 if (error)
8940 dev_err(&instance->pdev->dev,
8941 "register aen failed error %x\n", error);
8942
8943 mutex_unlock(&instance->reset_mutex);
8944 kfree(ev);
8945 }
8946
8947 /**
8948 * megasas_init - Driver load entry point
8949 */
megasas_init(void)8950 static int __init megasas_init(void)
8951 {
8952 int rval;
8953
8954 /*
8955 * Booted in kdump kernel, minimize memory footprints by
8956 * disabling few features
8957 */
8958 if (reset_devices) {
8959 msix_vectors = 1;
8960 rdpq_enable = 0;
8961 dual_qdepth_disable = 1;
8962 }
8963
8964 /*
8965 * Announce driver version and other information
8966 */
8967 pr_info("megasas: %s\n", MEGASAS_VERSION);
8968
8969 spin_lock_init(&poll_aen_lock);
8970
8971 support_poll_for_event = 2;
8972 support_device_change = 1;
8973 support_nvme_encapsulation = true;
8974 support_pci_lane_margining = true;
8975
8976 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
8977
8978 /*
8979 * Register character device node
8980 */
8981 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
8982
8983 if (rval < 0) {
8984 printk(KERN_DEBUG "megasas: failed to open device node\n");
8985 return rval;
8986 }
8987
8988 megasas_mgmt_majorno = rval;
8989
8990 megasas_init_debugfs();
8991
8992 /*
8993 * Register ourselves as PCI hotplug module
8994 */
8995 rval = pci_register_driver(&megasas_pci_driver);
8996
8997 if (rval) {
8998 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n");
8999 goto err_pcidrv;
9000 }
9001
9002 if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
9003 (event_log_level > MFI_EVT_CLASS_DEAD)) {
9004 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");
9005 event_log_level = MFI_EVT_CLASS_CRITICAL;
9006 }
9007
9008 rval = driver_create_file(&megasas_pci_driver.driver,
9009 &driver_attr_version);
9010 if (rval)
9011 goto err_dcf_attr_ver;
9012
9013 rval = driver_create_file(&megasas_pci_driver.driver,
9014 &driver_attr_release_date);
9015 if (rval)
9016 goto err_dcf_rel_date;
9017
9018 rval = driver_create_file(&megasas_pci_driver.driver,
9019 &driver_attr_support_poll_for_event);
9020 if (rval)
9021 goto err_dcf_support_poll_for_event;
9022
9023 rval = driver_create_file(&megasas_pci_driver.driver,
9024 &driver_attr_dbg_lvl);
9025 if (rval)
9026 goto err_dcf_dbg_lvl;
9027 rval = driver_create_file(&megasas_pci_driver.driver,
9028 &driver_attr_support_device_change);
9029 if (rval)
9030 goto err_dcf_support_device_change;
9031
9032 rval = driver_create_file(&megasas_pci_driver.driver,
9033 &driver_attr_support_nvme_encapsulation);
9034 if (rval)
9035 goto err_dcf_support_nvme_encapsulation;
9036
9037 rval = driver_create_file(&megasas_pci_driver.driver,
9038 &driver_attr_support_pci_lane_margining);
9039 if (rval)
9040 goto err_dcf_support_pci_lane_margining;
9041
9042 return rval;
9043
9044 err_dcf_support_pci_lane_margining:
9045 driver_remove_file(&megasas_pci_driver.driver,
9046 &driver_attr_support_nvme_encapsulation);
9047
9048 err_dcf_support_nvme_encapsulation:
9049 driver_remove_file(&megasas_pci_driver.driver,
9050 &driver_attr_support_device_change);
9051
9052 err_dcf_support_device_change:
9053 driver_remove_file(&megasas_pci_driver.driver,
9054 &driver_attr_dbg_lvl);
9055 err_dcf_dbg_lvl:
9056 driver_remove_file(&megasas_pci_driver.driver,
9057 &driver_attr_support_poll_for_event);
9058 err_dcf_support_poll_for_event:
9059 driver_remove_file(&megasas_pci_driver.driver,
9060 &driver_attr_release_date);
9061 err_dcf_rel_date:
9062 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
9063 err_dcf_attr_ver:
9064 pci_unregister_driver(&megasas_pci_driver);
9065 err_pcidrv:
9066 megasas_exit_debugfs();
9067 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
9068 return rval;
9069 }
9070
9071 /**
9072 * megasas_exit - Driver unload entry point
9073 */
megasas_exit(void)9074 static void __exit megasas_exit(void)
9075 {
9076 driver_remove_file(&megasas_pci_driver.driver,
9077 &driver_attr_dbg_lvl);
9078 driver_remove_file(&megasas_pci_driver.driver,
9079 &driver_attr_support_poll_for_event);
9080 driver_remove_file(&megasas_pci_driver.driver,
9081 &driver_attr_support_device_change);
9082 driver_remove_file(&megasas_pci_driver.driver,
9083 &driver_attr_release_date);
9084 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
9085 driver_remove_file(&megasas_pci_driver.driver,
9086 &driver_attr_support_nvme_encapsulation);
9087 driver_remove_file(&megasas_pci_driver.driver,
9088 &driver_attr_support_pci_lane_margining);
9089
9090 pci_unregister_driver(&megasas_pci_driver);
9091 megasas_exit_debugfs();
9092 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
9093 }
9094
9095 module_init(megasas_init);
9096 module_exit(megasas_exit);
9097