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interconnect: qcom: Fix Kconfig indentation
[linux/fpc-iii.git] / drivers / scsi / megaraid / megaraid_sas_base.c
blobc40fbea06cc5e14ba151eacd2846c8981d8b1f00
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 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 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 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
131 /*
132 * PCI ID table for all supported controllers
133 */
134 static struct pci_device_id megasas_pci_table[] = {
135
136 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
137 /* xscale IOP */
138 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
139 /* ppc IOP */
140 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
141 /* ppc IOP */
142 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
143 /* gen2*/
144 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
145 /* gen2*/
146 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
147 /* skinny*/
148 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
149 /* skinny*/
150 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
151 /* xscale IOP, vega */
152 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
153 /* xscale IOP */
154 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
155 /* Fusion */
156 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)},
157 /* Plasma */
158 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
159 /* Invader */
160 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
161 /* Fury */
162 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER)},
163 /* Intruder */
164 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER_24)},
165 /* Intruder 24 port*/
166 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_52)},
167 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_53)},
168 /* VENTURA */
169 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA)},
170 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER)},
171 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_HARPOON)},
172 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_TOMCAT)},
173 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA_4PORT)},
174 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER_4PORT)},
175 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E1)},
176 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E2)},
177 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E5)},
178 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E6)},
179 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E0)},
180 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E3)},
181 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E4)},
182 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E7)},
183 {}
184 };
185
186 MODULE_DEVICE_TABLE(pci, megasas_pci_table);
187
188 static int megasas_mgmt_majorno;
189 struct megasas_mgmt_info megasas_mgmt_info;
190 static struct fasync_struct *megasas_async_queue;
191 static DEFINE_MUTEX(megasas_async_queue_mutex);
192
193 static int megasas_poll_wait_aen;
194 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
195 static u32 support_poll_for_event;
196 u32 megasas_dbg_lvl;
197 static u32 support_device_change;
198 static bool support_nvme_encapsulation;
199 static bool support_pci_lane_margining;
200
201 /* define lock for aen poll */
202 spinlock_t poll_aen_lock;
203
204 extern struct dentry *megasas_debugfs_root;
205 extern void megasas_init_debugfs(void);
206 extern void megasas_exit_debugfs(void);
207 extern void megasas_setup_debugfs(struct megasas_instance *instance);
208 extern void megasas_destroy_debugfs(struct megasas_instance *instance);
209
210 void
211 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
212 u8 alt_status);
213 static u32
214 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance);
215 static int
216 megasas_adp_reset_gen2(struct megasas_instance *instance,
217 struct megasas_register_set __iomem *reg_set);
218 static irqreturn_t megasas_isr(int irq, void *devp);
219 static u32
220 megasas_init_adapter_mfi(struct megasas_instance *instance);
221 u32
222 megasas_build_and_issue_cmd(struct megasas_instance *instance,
223 struct scsi_cmnd *scmd);
224 static void megasas_complete_cmd_dpc(unsigned long instance_addr);
225 int
226 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
227 int seconds);
228 void megasas_fusion_ocr_wq(struct work_struct *work);
229 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
230 int initial);
231 static int
232 megasas_set_dma_mask(struct megasas_instance *instance);
233 static int
234 megasas_alloc_ctrl_mem(struct megasas_instance *instance);
235 static inline void
236 megasas_free_ctrl_mem(struct megasas_instance *instance);
237 static inline int
238 megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance);
239 static inline void
240 megasas_free_ctrl_dma_buffers(struct megasas_instance *instance);
241 static inline void
242 megasas_init_ctrl_params(struct megasas_instance *instance);
243
244 u32 megasas_readl(struct megasas_instance *instance,
245 const volatile void __iomem *addr)
246 {
247 u32 i = 0, ret_val;
248 /*
249 * Due to a HW errata in Aero controllers, reads to certain
250 * Fusion registers could intermittently return all zeroes.
251 * This behavior is transient in nature and subsequent reads will
252 * return valid value. As a workaround in driver, retry readl for
253 * upto three times until a non-zero value is read.
254 */
255 if (instance->adapter_type == AERO_SERIES) {
256 do {
257 ret_val = readl(addr);
258 i++;
259 } while (ret_val == 0 && i < 3);
260 return ret_val;
261 } else {
262 return readl(addr);
263 }
264 }
265
266 /**
267 * megasas_set_dma_settings - Populate DMA address, length and flags for DCMDs
268 * @instance: Adapter soft state
269 * @dcmd: DCMD frame inside MFI command
270 * @dma_addr: DMA address of buffer to be passed to FW
271 * @dma_len: Length of DMA buffer to be passed to FW
272 * @return: void
273 */
274 void megasas_set_dma_settings(struct megasas_instance *instance,
275 struct megasas_dcmd_frame *dcmd,
276 dma_addr_t dma_addr, u32 dma_len)
277 {
278 if (instance->consistent_mask_64bit) {
279 dcmd->sgl.sge64[0].phys_addr = cpu_to_le64(dma_addr);
280 dcmd->sgl.sge64[0].length = cpu_to_le32(dma_len);
281 dcmd->flags = cpu_to_le16(dcmd->flags | MFI_FRAME_SGL64);
282
283 } else {
284 dcmd->sgl.sge32[0].phys_addr =
285 cpu_to_le32(lower_32_bits(dma_addr));
286 dcmd->sgl.sge32[0].length = cpu_to_le32(dma_len);
287 dcmd->flags = cpu_to_le16(dcmd->flags);
288 }
289 }
290
291 static void
292 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
293 {
294 instance->instancet->fire_cmd(instance,
295 cmd->frame_phys_addr, 0, instance->reg_set);
296 return;
297 }
298
299 /**
300 * megasas_get_cmd - Get a command from the free pool
301 * @instance: Adapter soft state
302 *
303 * Returns a free command from the pool
304 */
305 struct megasas_cmd *megasas_get_cmd(struct megasas_instance
306 *instance)
307 {
308 unsigned long flags;
309 struct megasas_cmd *cmd = NULL;
310
311 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
312
313 if (!list_empty(&instance->cmd_pool)) {
314 cmd = list_entry((&instance->cmd_pool)->next,
315 struct megasas_cmd, list);
316 list_del_init(&cmd->list);
317 } else {
318 dev_err(&instance->pdev->dev, "Command pool empty!\n");
319 }
320
321 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
322 return cmd;
323 }
324
325 /**
326 * megasas_return_cmd - Return a cmd to free command pool
327 * @instance: Adapter soft state
328 * @cmd: Command packet to be returned to free command pool
329 */
330 void
331 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
332 {
333 unsigned long flags;
334 u32 blk_tags;
335 struct megasas_cmd_fusion *cmd_fusion;
336 struct fusion_context *fusion = instance->ctrl_context;
337
338 /* This flag is used only for fusion adapter.
339 * Wait for Interrupt for Polled mode DCMD
340 */
341 if (cmd->flags & DRV_DCMD_POLLED_MODE)
342 return;
343
344 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
345
346 if (fusion) {
347 blk_tags = instance->max_scsi_cmds + cmd->index;
348 cmd_fusion = fusion->cmd_list[blk_tags];
349 megasas_return_cmd_fusion(instance, cmd_fusion);
350 }
351 cmd->scmd = NULL;
352 cmd->frame_count = 0;
353 cmd->flags = 0;
354 memset(cmd->frame, 0, instance->mfi_frame_size);
355 cmd->frame->io.context = cpu_to_le32(cmd->index);
356 if (!fusion && reset_devices)
357 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
358 list_add(&cmd->list, (&instance->cmd_pool)->next);
359
360 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
361
362 }
363
364 static const char *
365 format_timestamp(uint32_t timestamp)
366 {
367 static char buffer[32];
368
369 if ((timestamp & 0xff000000) == 0xff000000)
370 snprintf(buffer, sizeof(buffer), "boot + %us", timestamp &
371 0x00ffffff);
372 else
373 snprintf(buffer, sizeof(buffer), "%us", timestamp);
374 return buffer;
375 }
376
377 static const char *
378 format_class(int8_t class)
379 {
380 static char buffer[6];
381
382 switch (class) {
383 case MFI_EVT_CLASS_DEBUG:
384 return "debug";
385 case MFI_EVT_CLASS_PROGRESS:
386 return "progress";
387 case MFI_EVT_CLASS_INFO:
388 return "info";
389 case MFI_EVT_CLASS_WARNING:
390 return "WARN";
391 case MFI_EVT_CLASS_CRITICAL:
392 return "CRIT";
393 case MFI_EVT_CLASS_FATAL:
394 return "FATAL";
395 case MFI_EVT_CLASS_DEAD:
396 return "DEAD";
397 default:
398 snprintf(buffer, sizeof(buffer), "%d", class);
399 return buffer;
400 }
401 }
402
403 /**
404 * megasas_decode_evt: Decode FW AEN event and print critical event
405 * for information.
406 * @instance: Adapter soft state
407 */
408 static void
409 megasas_decode_evt(struct megasas_instance *instance)
410 {
411 struct megasas_evt_detail *evt_detail = instance->evt_detail;
412 union megasas_evt_class_locale class_locale;
413 class_locale.word = le32_to_cpu(evt_detail->cl.word);
414
415 if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
416 (event_log_level > MFI_EVT_CLASS_DEAD)) {
417 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");
418 event_log_level = MFI_EVT_CLASS_CRITICAL;
419 }
420
421 if (class_locale.members.class >= event_log_level)
422 dev_info(&instance->pdev->dev, "%d (%s/0x%04x/%s) - %s\n",
423 le32_to_cpu(evt_detail->seq_num),
424 format_timestamp(le32_to_cpu(evt_detail->time_stamp)),
425 (class_locale.members.locale),
426 format_class(class_locale.members.class),
427 evt_detail->description);
428 }
429
430 /**
431 * The following functions are defined for xscale
432 * (deviceid : 1064R, PERC5) controllers
433 */
434
435 /**
436 * megasas_enable_intr_xscale - Enables interrupts
437 * @regs: MFI register set
438 */
439 static inline void
440 megasas_enable_intr_xscale(struct megasas_instance *instance)
441 {
442 struct megasas_register_set __iomem *regs;
443
444 regs = instance->reg_set;
445 writel(0, &(regs)->outbound_intr_mask);
446
447 /* Dummy readl to force pci flush */
448 readl(&regs->outbound_intr_mask);
449 }
450
451 /**
452 * megasas_disable_intr_xscale -Disables interrupt
453 * @regs: MFI register set
454 */
455 static inline void
456 megasas_disable_intr_xscale(struct megasas_instance *instance)
457 {
458 struct megasas_register_set __iomem *regs;
459 u32 mask = 0x1f;
460
461 regs = instance->reg_set;
462 writel(mask, &regs->outbound_intr_mask);
463 /* Dummy readl to force pci flush */
464 readl(&regs->outbound_intr_mask);
465 }
466
467 /**
468 * megasas_read_fw_status_reg_xscale - returns the current FW status value
469 * @regs: MFI register set
470 */
471 static u32
472 megasas_read_fw_status_reg_xscale(struct megasas_instance *instance)
473 {
474 return readl(&instance->reg_set->outbound_msg_0);
475 }
476 /**
477 * megasas_clear_interrupt_xscale - Check & clear interrupt
478 * @regs: MFI register set
479 */
480 static int
481 megasas_clear_intr_xscale(struct megasas_instance *instance)
482 {
483 u32 status;
484 u32 mfiStatus = 0;
485 struct megasas_register_set __iomem *regs;
486 regs = instance->reg_set;
487
488 /*
489 * Check if it is our interrupt
490 */
491 status = readl(&regs->outbound_intr_status);
492
493 if (status & MFI_OB_INTR_STATUS_MASK)
494 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
495 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
496 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
497
498 /*
499 * Clear the interrupt by writing back the same value
500 */
501 if (mfiStatus)
502 writel(status, &regs->outbound_intr_status);
503
504 /* Dummy readl to force pci flush */
505 readl(&regs->outbound_intr_status);
506
507 return mfiStatus;
508 }
509
510 /**
511 * megasas_fire_cmd_xscale - Sends command to the FW
512 * @frame_phys_addr : Physical address of cmd
513 * @frame_count : Number of frames for the command
514 * @regs : MFI register set
515 */
516 static inline void
517 megasas_fire_cmd_xscale(struct megasas_instance *instance,
518 dma_addr_t frame_phys_addr,
519 u32 frame_count,
520 struct megasas_register_set __iomem *regs)
521 {
522 unsigned long flags;
523
524 spin_lock_irqsave(&instance->hba_lock, flags);
525 writel((frame_phys_addr >> 3)|(frame_count),
526 &(regs)->inbound_queue_port);
527 spin_unlock_irqrestore(&instance->hba_lock, flags);
528 }
529
530 /**
531 * megasas_adp_reset_xscale - For controller reset
532 * @regs: MFI register set
533 */
534 static int
535 megasas_adp_reset_xscale(struct megasas_instance *instance,
536 struct megasas_register_set __iomem *regs)
537 {
538 u32 i;
539 u32 pcidata;
540
541 writel(MFI_ADP_RESET, &regs->inbound_doorbell);
542
543 for (i = 0; i < 3; i++)
544 msleep(1000); /* sleep for 3 secs */
545 pcidata = 0;
546 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
547 dev_notice(&instance->pdev->dev, "pcidata = %x\n", pcidata);
548 if (pcidata & 0x2) {
549 dev_notice(&instance->pdev->dev, "mfi 1068 offset read=%x\n", pcidata);
550 pcidata &= ~0x2;
551 pci_write_config_dword(instance->pdev,
552 MFI_1068_PCSR_OFFSET, pcidata);
553
554 for (i = 0; i < 2; i++)
555 msleep(1000); /* need to wait 2 secs again */
556
557 pcidata = 0;
558 pci_read_config_dword(instance->pdev,
559 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
560 dev_notice(&instance->pdev->dev, "1068 offset handshake read=%x\n", pcidata);
561 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
562 dev_notice(&instance->pdev->dev, "1068 offset pcidt=%x\n", pcidata);
563 pcidata = 0;
564 pci_write_config_dword(instance->pdev,
565 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
566 }
567 }
568 return 0;
569 }
570
571 /**
572 * megasas_check_reset_xscale - For controller reset check
573 * @regs: MFI register set
574 */
575 static int
576 megasas_check_reset_xscale(struct megasas_instance *instance,
577 struct megasas_register_set __iomem *regs)
578 {
579 if ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
580 (le32_to_cpu(*instance->consumer) ==
581 MEGASAS_ADPRESET_INPROG_SIGN))
582 return 1;
583 return 0;
584 }
585
586 static struct megasas_instance_template megasas_instance_template_xscale = {
587
588 .fire_cmd = megasas_fire_cmd_xscale,
589 .enable_intr = megasas_enable_intr_xscale,
590 .disable_intr = megasas_disable_intr_xscale,
591 .clear_intr = megasas_clear_intr_xscale,
592 .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
593 .adp_reset = megasas_adp_reset_xscale,
594 .check_reset = megasas_check_reset_xscale,
595 .service_isr = megasas_isr,
596 .tasklet = megasas_complete_cmd_dpc,
597 .init_adapter = megasas_init_adapter_mfi,
598 .build_and_issue_cmd = megasas_build_and_issue_cmd,
599 .issue_dcmd = megasas_issue_dcmd,
600 };
601
602 /**
603 * This is the end of set of functions & definitions specific
604 * to xscale (deviceid : 1064R, PERC5) controllers
605 */
606
607 /**
608 * The following functions are defined for ppc (deviceid : 0x60)
609 * controllers
610 */
611
612 /**
613 * megasas_enable_intr_ppc - Enables interrupts
614 * @regs: MFI register set
615 */
616 static inline void
617 megasas_enable_intr_ppc(struct megasas_instance *instance)
618 {
619 struct megasas_register_set __iomem *regs;
620
621 regs = instance->reg_set;
622 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
623
624 writel(~0x80000000, &(regs)->outbound_intr_mask);
625
626 /* Dummy readl to force pci flush */
627 readl(&regs->outbound_intr_mask);
628 }
629
630 /**
631 * megasas_disable_intr_ppc - Disable interrupt
632 * @regs: MFI register set
633 */
634 static inline void
635 megasas_disable_intr_ppc(struct megasas_instance *instance)
636 {
637 struct megasas_register_set __iomem *regs;
638 u32 mask = 0xFFFFFFFF;
639
640 regs = instance->reg_set;
641 writel(mask, &regs->outbound_intr_mask);
642 /* Dummy readl to force pci flush */
643 readl(&regs->outbound_intr_mask);
644 }
645
646 /**
647 * megasas_read_fw_status_reg_ppc - returns the current FW status value
648 * @regs: MFI register set
649 */
650 static u32
651 megasas_read_fw_status_reg_ppc(struct megasas_instance *instance)
652 {
653 return readl(&instance->reg_set->outbound_scratch_pad_0);
654 }
655
656 /**
657 * megasas_clear_interrupt_ppc - Check & clear interrupt
658 * @regs: MFI register set
659 */
660 static int
661 megasas_clear_intr_ppc(struct megasas_instance *instance)
662 {
663 u32 status, mfiStatus = 0;
664 struct megasas_register_set __iomem *regs;
665 regs = instance->reg_set;
666
667 /*
668 * Check if it is our interrupt
669 */
670 status = readl(&regs->outbound_intr_status);
671
672 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
673 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
674
675 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
676 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
677
678 /*
679 * Clear the interrupt by writing back the same value
680 */
681 writel(status, &regs->outbound_doorbell_clear);
682
683 /* Dummy readl to force pci flush */
684 readl(&regs->outbound_doorbell_clear);
685
686 return mfiStatus;
687 }
688
689 /**
690 * megasas_fire_cmd_ppc - Sends command to the FW
691 * @frame_phys_addr : Physical address of cmd
692 * @frame_count : Number of frames for the command
693 * @regs : MFI register set
694 */
695 static inline void
696 megasas_fire_cmd_ppc(struct megasas_instance *instance,
697 dma_addr_t frame_phys_addr,
698 u32 frame_count,
699 struct megasas_register_set __iomem *regs)
700 {
701 unsigned long flags;
702
703 spin_lock_irqsave(&instance->hba_lock, flags);
704 writel((frame_phys_addr | (frame_count<<1))|1,
705 &(regs)->inbound_queue_port);
706 spin_unlock_irqrestore(&instance->hba_lock, flags);
707 }
708
709 /**
710 * megasas_check_reset_ppc - For controller reset check
711 * @regs: MFI register set
712 */
713 static int
714 megasas_check_reset_ppc(struct megasas_instance *instance,
715 struct megasas_register_set __iomem *regs)
716 {
717 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
718 return 1;
719
720 return 0;
721 }
722
723 static struct megasas_instance_template megasas_instance_template_ppc = {
724
725 .fire_cmd = megasas_fire_cmd_ppc,
726 .enable_intr = megasas_enable_intr_ppc,
727 .disable_intr = megasas_disable_intr_ppc,
728 .clear_intr = megasas_clear_intr_ppc,
729 .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
730 .adp_reset = megasas_adp_reset_xscale,
731 .check_reset = megasas_check_reset_ppc,
732 .service_isr = megasas_isr,
733 .tasklet = megasas_complete_cmd_dpc,
734 .init_adapter = megasas_init_adapter_mfi,
735 .build_and_issue_cmd = megasas_build_and_issue_cmd,
736 .issue_dcmd = megasas_issue_dcmd,
737 };
738
739 /**
740 * megasas_enable_intr_skinny - Enables interrupts
741 * @regs: MFI register set
742 */
743 static inline void
744 megasas_enable_intr_skinny(struct megasas_instance *instance)
745 {
746 struct megasas_register_set __iomem *regs;
747
748 regs = instance->reg_set;
749 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
750
751 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
752
753 /* Dummy readl to force pci flush */
754 readl(&regs->outbound_intr_mask);
755 }
756
757 /**
758 * megasas_disable_intr_skinny - Disables interrupt
759 * @regs: MFI register set
760 */
761 static inline void
762 megasas_disable_intr_skinny(struct megasas_instance *instance)
763 {
764 struct megasas_register_set __iomem *regs;
765 u32 mask = 0xFFFFFFFF;
766
767 regs = instance->reg_set;
768 writel(mask, &regs->outbound_intr_mask);
769 /* Dummy readl to force pci flush */
770 readl(&regs->outbound_intr_mask);
771 }
772
773 /**
774 * megasas_read_fw_status_reg_skinny - returns the current FW status value
775 * @regs: MFI register set
776 */
777 static u32
778 megasas_read_fw_status_reg_skinny(struct megasas_instance *instance)
779 {
780 return readl(&instance->reg_set->outbound_scratch_pad_0);
781 }
782
783 /**
784 * megasas_clear_interrupt_skinny - Check & clear interrupt
785 * @regs: MFI register set
786 */
787 static int
788 megasas_clear_intr_skinny(struct megasas_instance *instance)
789 {
790 u32 status;
791 u32 mfiStatus = 0;
792 struct megasas_register_set __iomem *regs;
793 regs = instance->reg_set;
794
795 /*
796 * Check if it is our interrupt
797 */
798 status = readl(&regs->outbound_intr_status);
799
800 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
801 return 0;
802 }
803
804 /*
805 * Check if it is our interrupt
806 */
807 if ((megasas_read_fw_status_reg_skinny(instance) & MFI_STATE_MASK) ==
808 MFI_STATE_FAULT) {
809 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
810 } else
811 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
812
813 /*
814 * Clear the interrupt by writing back the same value
815 */
816 writel(status, &regs->outbound_intr_status);
817
818 /*
819 * dummy read to flush PCI
820 */
821 readl(&regs->outbound_intr_status);
822
823 return mfiStatus;
824 }
825
826 /**
827 * megasas_fire_cmd_skinny - Sends command to the FW
828 * @frame_phys_addr : Physical address of cmd
829 * @frame_count : Number of frames for the command
830 * @regs : MFI register set
831 */
832 static inline void
833 megasas_fire_cmd_skinny(struct megasas_instance *instance,
834 dma_addr_t frame_phys_addr,
835 u32 frame_count,
836 struct megasas_register_set __iomem *regs)
837 {
838 unsigned long flags;
839
840 spin_lock_irqsave(&instance->hba_lock, flags);
841 writel(upper_32_bits(frame_phys_addr),
842 &(regs)->inbound_high_queue_port);
843 writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
844 &(regs)->inbound_low_queue_port);
845 spin_unlock_irqrestore(&instance->hba_lock, flags);
846 }
847
848 /**
849 * megasas_check_reset_skinny - For controller reset check
850 * @regs: MFI register set
851 */
852 static int
853 megasas_check_reset_skinny(struct megasas_instance *instance,
854 struct megasas_register_set __iomem *regs)
855 {
856 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
857 return 1;
858
859 return 0;
860 }
861
862 static struct megasas_instance_template megasas_instance_template_skinny = {
863
864 .fire_cmd = megasas_fire_cmd_skinny,
865 .enable_intr = megasas_enable_intr_skinny,
866 .disable_intr = megasas_disable_intr_skinny,
867 .clear_intr = megasas_clear_intr_skinny,
868 .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
869 .adp_reset = megasas_adp_reset_gen2,
870 .check_reset = megasas_check_reset_skinny,
871 .service_isr = megasas_isr,
872 .tasklet = megasas_complete_cmd_dpc,
873 .init_adapter = megasas_init_adapter_mfi,
874 .build_and_issue_cmd = megasas_build_and_issue_cmd,
875 .issue_dcmd = megasas_issue_dcmd,
876 };
877
878
879 /**
880 * The following functions are defined for gen2 (deviceid : 0x78 0x79)
881 * controllers
882 */
883
884 /**
885 * megasas_enable_intr_gen2 - Enables interrupts
886 * @regs: MFI register set
887 */
888 static inline void
889 megasas_enable_intr_gen2(struct megasas_instance *instance)
890 {
891 struct megasas_register_set __iomem *regs;
892
893 regs = instance->reg_set;
894 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
895
896 /* write ~0x00000005 (4 & 1) to the intr mask*/
897 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
898
899 /* Dummy readl to force pci flush */
900 readl(&regs->outbound_intr_mask);
901 }
902
903 /**
904 * megasas_disable_intr_gen2 - Disables interrupt
905 * @regs: MFI register set
906 */
907 static inline void
908 megasas_disable_intr_gen2(struct megasas_instance *instance)
909 {
910 struct megasas_register_set __iomem *regs;
911 u32 mask = 0xFFFFFFFF;
912
913 regs = instance->reg_set;
914 writel(mask, &regs->outbound_intr_mask);
915 /* Dummy readl to force pci flush */
916 readl(&regs->outbound_intr_mask);
917 }
918
919 /**
920 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
921 * @regs: MFI register set
922 */
923 static u32
924 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance)
925 {
926 return readl(&instance->reg_set->outbound_scratch_pad_0);
927 }
928
929 /**
930 * megasas_clear_interrupt_gen2 - Check & clear interrupt
931 * @regs: MFI register set
932 */
933 static int
934 megasas_clear_intr_gen2(struct megasas_instance *instance)
935 {
936 u32 status;
937 u32 mfiStatus = 0;
938 struct megasas_register_set __iomem *regs;
939 regs = instance->reg_set;
940
941 /*
942 * Check if it is our interrupt
943 */
944 status = readl(&regs->outbound_intr_status);
945
946 if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
947 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
948 }
949 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
950 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
951 }
952
953 /*
954 * Clear the interrupt by writing back the same value
955 */
956 if (mfiStatus)
957 writel(status, &regs->outbound_doorbell_clear);
958
959 /* Dummy readl to force pci flush */
960 readl(&regs->outbound_intr_status);
961
962 return mfiStatus;
963 }
964 /**
965 * megasas_fire_cmd_gen2 - Sends command to the FW
966 * @frame_phys_addr : Physical address of cmd
967 * @frame_count : Number of frames for the command
968 * @regs : MFI register set
969 */
970 static inline void
971 megasas_fire_cmd_gen2(struct megasas_instance *instance,
972 dma_addr_t frame_phys_addr,
973 u32 frame_count,
974 struct megasas_register_set __iomem *regs)
975 {
976 unsigned long flags;
977
978 spin_lock_irqsave(&instance->hba_lock, flags);
979 writel((frame_phys_addr | (frame_count<<1))|1,
980 &(regs)->inbound_queue_port);
981 spin_unlock_irqrestore(&instance->hba_lock, flags);
982 }
983
984 /**
985 * megasas_adp_reset_gen2 - For controller reset
986 * @regs: MFI register set
987 */
988 static int
989 megasas_adp_reset_gen2(struct megasas_instance *instance,
990 struct megasas_register_set __iomem *reg_set)
991 {
992 u32 retry = 0 ;
993 u32 HostDiag;
994 u32 __iomem *seq_offset = &reg_set->seq_offset;
995 u32 __iomem *hostdiag_offset = &reg_set->host_diag;
996
997 if (instance->instancet == &megasas_instance_template_skinny) {
998 seq_offset = &reg_set->fusion_seq_offset;
999 hostdiag_offset = &reg_set->fusion_host_diag;
1000 }
1001
1002 writel(0, seq_offset);
1003 writel(4, seq_offset);
1004 writel(0xb, seq_offset);
1005 writel(2, seq_offset);
1006 writel(7, seq_offset);
1007 writel(0xd, seq_offset);
1008
1009 msleep(1000);
1010
1011 HostDiag = (u32)readl(hostdiag_offset);
1012
1013 while (!(HostDiag & DIAG_WRITE_ENABLE)) {
1014 msleep(100);
1015 HostDiag = (u32)readl(hostdiag_offset);
1016 dev_notice(&instance->pdev->dev, "RESETGEN2: retry=%x, hostdiag=%x\n",
1017 retry, HostDiag);
1018
1019 if (retry++ >= 100)
1020 return 1;
1021
1022 }
1023
1024 dev_notice(&instance->pdev->dev, "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
1025
1026 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
1027
1028 ssleep(10);
1029
1030 HostDiag = (u32)readl(hostdiag_offset);
1031 while (HostDiag & DIAG_RESET_ADAPTER) {
1032 msleep(100);
1033 HostDiag = (u32)readl(hostdiag_offset);
1034 dev_notice(&instance->pdev->dev, "RESET_GEN2: retry=%x, hostdiag=%x\n",
1035 retry, HostDiag);
1036
1037 if (retry++ >= 1000)
1038 return 1;
1039
1040 }
1041 return 0;
1042 }
1043
1044 /**
1045 * megasas_check_reset_gen2 - For controller reset check
1046 * @regs: MFI register set
1047 */
1048 static int
1049 megasas_check_reset_gen2(struct megasas_instance *instance,
1050 struct megasas_register_set __iomem *regs)
1051 {
1052 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1053 return 1;
1054
1055 return 0;
1056 }
1057
1058 static struct megasas_instance_template megasas_instance_template_gen2 = {
1059
1060 .fire_cmd = megasas_fire_cmd_gen2,
1061 .enable_intr = megasas_enable_intr_gen2,
1062 .disable_intr = megasas_disable_intr_gen2,
1063 .clear_intr = megasas_clear_intr_gen2,
1064 .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
1065 .adp_reset = megasas_adp_reset_gen2,
1066 .check_reset = megasas_check_reset_gen2,
1067 .service_isr = megasas_isr,
1068 .tasklet = megasas_complete_cmd_dpc,
1069 .init_adapter = megasas_init_adapter_mfi,
1070 .build_and_issue_cmd = megasas_build_and_issue_cmd,
1071 .issue_dcmd = megasas_issue_dcmd,
1072 };
1073
1074 /**
1075 * This is the end of set of functions & definitions
1076 * specific to gen2 (deviceid : 0x78, 0x79) controllers
1077 */
1078
1079 /*
1080 * Template added for TB (Fusion)
1081 */
1082 extern struct megasas_instance_template megasas_instance_template_fusion;
1083
1084 /**
1085 * megasas_issue_polled - Issues a polling command
1086 * @instance: Adapter soft state
1087 * @cmd: Command packet to be issued
1088 *
1089 * For polling, MFI requires the cmd_status to be set to MFI_STAT_INVALID_STATUS before posting.
1090 */
1091 int
1092 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
1093 {
1094 struct megasas_header *frame_hdr = &cmd->frame->hdr;
1095
1096 frame_hdr->cmd_status = MFI_STAT_INVALID_STATUS;
1097 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
1098
1099 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1100 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1101 __func__, __LINE__);
1102 return DCMD_NOT_FIRED;
1103 }
1104
1105 instance->instancet->issue_dcmd(instance, cmd);
1106
1107 return wait_and_poll(instance, cmd, instance->requestorId ?
1108 MEGASAS_ROUTINE_WAIT_TIME_VF : MFI_IO_TIMEOUT_SECS);
1109 }
1110
1111 /**
1112 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds
1113 * @instance: Adapter soft state
1114 * @cmd: Command to be issued
1115 * @timeout: Timeout in seconds
1116 *
1117 * This function waits on an event for the command to be returned from ISR.
1118 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1119 * Used to issue ioctl commands.
1120 */
1121 int
1122 megasas_issue_blocked_cmd(struct megasas_instance *instance,
1123 struct megasas_cmd *cmd, int timeout)
1124 {
1125 int ret = 0;
1126 cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
1127
1128 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1129 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1130 __func__, __LINE__);
1131 return DCMD_NOT_FIRED;
1132 }
1133
1134 instance->instancet->issue_dcmd(instance, cmd);
1135
1136 if (timeout) {
1137 ret = wait_event_timeout(instance->int_cmd_wait_q,
1138 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ);
1139 if (!ret) {
1140 dev_err(&instance->pdev->dev,
1141 "DCMD(opcode: 0x%x) is timed out, func:%s\n",
1142 cmd->frame->dcmd.opcode, __func__);
1143 return DCMD_TIMEOUT;
1144 }
1145 } else
1146 wait_event(instance->int_cmd_wait_q,
1147 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS);
1148
1149 return (cmd->cmd_status_drv == MFI_STAT_OK) ?
1150 DCMD_SUCCESS : DCMD_FAILED;
1151 }
1152
1153 /**
1154 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd
1155 * @instance: Adapter soft state
1156 * @cmd_to_abort: Previously issued cmd to be aborted
1157 * @timeout: Timeout in seconds
1158 *
1159 * MFI firmware can abort previously issued AEN comamnd (automatic event
1160 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
1161 * cmd and waits for return status.
1162 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1163 */
1164 static int
1165 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
1166 struct megasas_cmd *cmd_to_abort, int timeout)
1167 {
1168 struct megasas_cmd *cmd;
1169 struct megasas_abort_frame *abort_fr;
1170 int ret = 0;
1171 u32 opcode;
1172
1173 cmd = megasas_get_cmd(instance);
1174
1175 if (!cmd)
1176 return -1;
1177
1178 abort_fr = &cmd->frame->abort;
1179
1180 /*
1181 * Prepare and issue the abort frame
1182 */
1183 abort_fr->cmd = MFI_CMD_ABORT;
1184 abort_fr->cmd_status = MFI_STAT_INVALID_STATUS;
1185 abort_fr->flags = cpu_to_le16(0);
1186 abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
1187 abort_fr->abort_mfi_phys_addr_lo =
1188 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
1189 abort_fr->abort_mfi_phys_addr_hi =
1190 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
1191
1192 cmd->sync_cmd = 1;
1193 cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
1194
1195 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1196 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1197 __func__, __LINE__);
1198 return DCMD_NOT_FIRED;
1199 }
1200
1201 instance->instancet->issue_dcmd(instance, cmd);
1202
1203 if (timeout) {
1204 ret = wait_event_timeout(instance->abort_cmd_wait_q,
1205 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ);
1206 if (!ret) {
1207 opcode = cmd_to_abort->frame->dcmd.opcode;
1208 dev_err(&instance->pdev->dev,
1209 "Abort(to be aborted DCMD opcode: 0x%x) is timed out func:%s\n",
1210 opcode, __func__);
1211 return DCMD_TIMEOUT;
1212 }
1213 } else
1214 wait_event(instance->abort_cmd_wait_q,
1215 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS);
1216
1217 cmd->sync_cmd = 0;
1218
1219 megasas_return_cmd(instance, cmd);
1220 return (cmd->cmd_status_drv == MFI_STAT_OK) ?
1221 DCMD_SUCCESS : DCMD_FAILED;
1222 }
1223
1224 /**
1225 * megasas_make_sgl32 - Prepares 32-bit SGL
1226 * @instance: Adapter soft state
1227 * @scp: SCSI command from the mid-layer
1228 * @mfi_sgl: SGL to be filled in
1229 *
1230 * If successful, this function returns the number of SG elements. Otherwise,
1231 * it returnes -1.
1232 */
1233 static int
1234 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
1235 union megasas_sgl *mfi_sgl)
1236 {
1237 int i;
1238 int sge_count;
1239 struct scatterlist *os_sgl;
1240
1241 sge_count = scsi_dma_map(scp);
1242 BUG_ON(sge_count < 0);
1243
1244 if (sge_count) {
1245 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1246 mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1247 mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
1248 }
1249 }
1250 return sge_count;
1251 }
1252
1253 /**
1254 * megasas_make_sgl64 - Prepares 64-bit SGL
1255 * @instance: Adapter soft state
1256 * @scp: SCSI command from the mid-layer
1257 * @mfi_sgl: SGL to be filled in
1258 *
1259 * If successful, this function returns the number of SG elements. Otherwise,
1260 * it returnes -1.
1261 */
1262 static int
1263 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1264 union megasas_sgl *mfi_sgl)
1265 {
1266 int i;
1267 int sge_count;
1268 struct scatterlist *os_sgl;
1269
1270 sge_count = scsi_dma_map(scp);
1271 BUG_ON(sge_count < 0);
1272
1273 if (sge_count) {
1274 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1275 mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1276 mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
1277 }
1278 }
1279 return sge_count;
1280 }
1281
1282 /**
1283 * megasas_make_sgl_skinny - Prepares IEEE SGL
1284 * @instance: Adapter soft state
1285 * @scp: SCSI command from the mid-layer
1286 * @mfi_sgl: SGL to be filled in
1287 *
1288 * If successful, this function returns the number of SG elements. Otherwise,
1289 * it returnes -1.
1290 */
1291 static int
1292 megasas_make_sgl_skinny(struct megasas_instance *instance,
1293 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1294 {
1295 int i;
1296 int sge_count;
1297 struct scatterlist *os_sgl;
1298
1299 sge_count = scsi_dma_map(scp);
1300
1301 if (sge_count) {
1302 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1303 mfi_sgl->sge_skinny[i].length =
1304 cpu_to_le32(sg_dma_len(os_sgl));
1305 mfi_sgl->sge_skinny[i].phys_addr =
1306 cpu_to_le64(sg_dma_address(os_sgl));
1307 mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
1308 }
1309 }
1310 return sge_count;
1311 }
1312
1313 /**
1314 * megasas_get_frame_count - Computes the number of frames
1315 * @frame_type : type of frame- io or pthru frame
1316 * @sge_count : number of sg elements
1317 *
1318 * Returns the number of frames required for numnber of sge's (sge_count)
1319 */
1320
1321 static u32 megasas_get_frame_count(struct megasas_instance *instance,
1322 u8 sge_count, u8 frame_type)
1323 {
1324 int num_cnt;
1325 int sge_bytes;
1326 u32 sge_sz;
1327 u32 frame_count = 0;
1328
1329 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1330 sizeof(struct megasas_sge32);
1331
1332 if (instance->flag_ieee) {
1333 sge_sz = sizeof(struct megasas_sge_skinny);
1334 }
1335
1336 /*
1337 * Main frame can contain 2 SGEs for 64-bit SGLs and
1338 * 3 SGEs for 32-bit SGLs for ldio &
1339 * 1 SGEs for 64-bit SGLs and
1340 * 2 SGEs for 32-bit SGLs for pthru frame
1341 */
1342 if (unlikely(frame_type == PTHRU_FRAME)) {
1343 if (instance->flag_ieee == 1) {
1344 num_cnt = sge_count - 1;
1345 } else if (IS_DMA64)
1346 num_cnt = sge_count - 1;
1347 else
1348 num_cnt = sge_count - 2;
1349 } else {
1350 if (instance->flag_ieee == 1) {
1351 num_cnt = sge_count - 1;
1352 } else if (IS_DMA64)
1353 num_cnt = sge_count - 2;
1354 else
1355 num_cnt = sge_count - 3;
1356 }
1357
1358 if (num_cnt > 0) {
1359 sge_bytes = sge_sz * num_cnt;
1360
1361 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1362 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1363 }
1364 /* Main frame */
1365 frame_count += 1;
1366
1367 if (frame_count > 7)
1368 frame_count = 8;
1369 return frame_count;
1370 }
1371
1372 /**
1373 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1374 * @instance: Adapter soft state
1375 * @scp: SCSI command
1376 * @cmd: Command to be prepared in
1377 *
1378 * This function prepares CDB commands. These are typcially pass-through
1379 * commands to the devices.
1380 */
1381 static int
1382 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1383 struct megasas_cmd *cmd)
1384 {
1385 u32 is_logical;
1386 u32 device_id;
1387 u16 flags = 0;
1388 struct megasas_pthru_frame *pthru;
1389
1390 is_logical = MEGASAS_IS_LOGICAL(scp->device);
1391 device_id = MEGASAS_DEV_INDEX(scp);
1392 pthru = (struct megasas_pthru_frame *)cmd->frame;
1393
1394 if (scp->sc_data_direction == DMA_TO_DEVICE)
1395 flags = MFI_FRAME_DIR_WRITE;
1396 else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1397 flags = MFI_FRAME_DIR_READ;
1398 else if (scp->sc_data_direction == DMA_NONE)
1399 flags = MFI_FRAME_DIR_NONE;
1400
1401 if (instance->flag_ieee == 1) {
1402 flags |= MFI_FRAME_IEEE;
1403 }
1404
1405 /*
1406 * Prepare the DCDB frame
1407 */
1408 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1409 pthru->cmd_status = 0x0;
1410 pthru->scsi_status = 0x0;
1411 pthru->target_id = device_id;
1412 pthru->lun = scp->device->lun;
1413 pthru->cdb_len = scp->cmd_len;
1414 pthru->timeout = 0;
1415 pthru->pad_0 = 0;
1416 pthru->flags = cpu_to_le16(flags);
1417 pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
1418
1419 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1420
1421 /*
1422 * If the command is for the tape device, set the
1423 * pthru timeout to the os layer timeout value.
1424 */
1425 if (scp->device->type == TYPE_TAPE) {
1426 if ((scp->request->timeout / HZ) > 0xFFFF)
1427 pthru->timeout = cpu_to_le16(0xFFFF);
1428 else
1429 pthru->timeout = cpu_to_le16(scp->request->timeout / HZ);
1430 }
1431
1432 /*
1433 * Construct SGL
1434 */
1435 if (instance->flag_ieee == 1) {
1436 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1437 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1438 &pthru->sgl);
1439 } else if (IS_DMA64) {
1440 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1441 pthru->sge_count = megasas_make_sgl64(instance, scp,
1442 &pthru->sgl);
1443 } else
1444 pthru->sge_count = megasas_make_sgl32(instance, scp,
1445 &pthru->sgl);
1446
1447 if (pthru->sge_count > instance->max_num_sge) {
1448 dev_err(&instance->pdev->dev, "DCDB too many SGE NUM=%x\n",
1449 pthru->sge_count);
1450 return 0;
1451 }
1452
1453 /*
1454 * Sense info specific
1455 */
1456 pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1457 pthru->sense_buf_phys_addr_hi =
1458 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
1459 pthru->sense_buf_phys_addr_lo =
1460 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
1461
1462 /*
1463 * Compute the total number of frames this command consumes. FW uses
1464 * this number to pull sufficient number of frames from host memory.
1465 */
1466 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1467 PTHRU_FRAME);
1468
1469 return cmd->frame_count;
1470 }
1471
1472 /**
1473 * megasas_build_ldio - Prepares IOs to logical devices
1474 * @instance: Adapter soft state
1475 * @scp: SCSI command
1476 * @cmd: Command to be prepared
1477 *
1478 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1479 */
1480 static int
1481 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1482 struct megasas_cmd *cmd)
1483 {
1484 u32 device_id;
1485 u8 sc = scp->cmnd[0];
1486 u16 flags = 0;
1487 struct megasas_io_frame *ldio;
1488
1489 device_id = MEGASAS_DEV_INDEX(scp);
1490 ldio = (struct megasas_io_frame *)cmd->frame;
1491
1492 if (scp->sc_data_direction == DMA_TO_DEVICE)
1493 flags = MFI_FRAME_DIR_WRITE;
1494 else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1495 flags = MFI_FRAME_DIR_READ;
1496
1497 if (instance->flag_ieee == 1) {
1498 flags |= MFI_FRAME_IEEE;
1499 }
1500
1501 /*
1502 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1503 */
1504 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1505 ldio->cmd_status = 0x0;
1506 ldio->scsi_status = 0x0;
1507 ldio->target_id = device_id;
1508 ldio->timeout = 0;
1509 ldio->reserved_0 = 0;
1510 ldio->pad_0 = 0;
1511 ldio->flags = cpu_to_le16(flags);
1512 ldio->start_lba_hi = 0;
1513 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1514
1515 /*
1516 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1517 */
1518 if (scp->cmd_len == 6) {
1519 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
1520 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
1521 ((u32) scp->cmnd[2] << 8) |
1522 (u32) scp->cmnd[3]);
1523
1524 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
1525 }
1526
1527 /*
1528 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1529 */
1530 else if (scp->cmd_len == 10) {
1531 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
1532 ((u32) scp->cmnd[7] << 8));
1533 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1534 ((u32) scp->cmnd[3] << 16) |
1535 ((u32) scp->cmnd[4] << 8) |
1536 (u32) scp->cmnd[5]);
1537 }
1538
1539 /*
1540 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1541 */
1542 else if (scp->cmd_len == 12) {
1543 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1544 ((u32) scp->cmnd[7] << 16) |
1545 ((u32) scp->cmnd[8] << 8) |
1546 (u32) scp->cmnd[9]);
1547
1548 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1549 ((u32) scp->cmnd[3] << 16) |
1550 ((u32) scp->cmnd[4] << 8) |
1551 (u32) scp->cmnd[5]);
1552 }
1553
1554 /*
1555 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1556 */
1557 else if (scp->cmd_len == 16) {
1558 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
1559 ((u32) scp->cmnd[11] << 16) |
1560 ((u32) scp->cmnd[12] << 8) |
1561 (u32) scp->cmnd[13]);
1562
1563 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1564 ((u32) scp->cmnd[7] << 16) |
1565 ((u32) scp->cmnd[8] << 8) |
1566 (u32) scp->cmnd[9]);
1567
1568 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1569 ((u32) scp->cmnd[3] << 16) |
1570 ((u32) scp->cmnd[4] << 8) |
1571 (u32) scp->cmnd[5]);
1572
1573 }
1574
1575 /*
1576 * Construct SGL
1577 */
1578 if (instance->flag_ieee) {
1579 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1580 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1581 &ldio->sgl);
1582 } else if (IS_DMA64) {
1583 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1584 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1585 } else
1586 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1587
1588 if (ldio->sge_count > instance->max_num_sge) {
1589 dev_err(&instance->pdev->dev, "build_ld_io: sge_count = %x\n",
1590 ldio->sge_count);
1591 return 0;
1592 }
1593
1594 /*
1595 * Sense info specific
1596 */
1597 ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1598 ldio->sense_buf_phys_addr_hi = 0;
1599 ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
1600
1601 /*
1602 * Compute the total number of frames this command consumes. FW uses
1603 * this number to pull sufficient number of frames from host memory.
1604 */
1605 cmd->frame_count = megasas_get_frame_count(instance,
1606 ldio->sge_count, IO_FRAME);
1607
1608 return cmd->frame_count;
1609 }
1610
1611 /**
1612 * megasas_cmd_type - Checks if the cmd is for logical drive/sysPD
1613 * and whether it's RW or non RW
1614 * @scmd: SCSI command
1615 *
1616 */
1617 inline int megasas_cmd_type(struct scsi_cmnd *cmd)
1618 {
1619 int ret;
1620
1621 switch (cmd->cmnd[0]) {
1622 case READ_10:
1623 case WRITE_10:
1624 case READ_12:
1625 case WRITE_12:
1626 case READ_6:
1627 case WRITE_6:
1628 case READ_16:
1629 case WRITE_16:
1630 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1631 READ_WRITE_LDIO : READ_WRITE_SYSPDIO;
1632 break;
1633 default:
1634 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1635 NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO;
1636 }
1637 return ret;
1638 }
1639
1640 /**
1641 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds
1642 * in FW
1643 * @instance: Adapter soft state
1644 */
1645 static inline void
1646 megasas_dump_pending_frames(struct megasas_instance *instance)
1647 {
1648 struct megasas_cmd *cmd;
1649 int i,n;
1650 union megasas_sgl *mfi_sgl;
1651 struct megasas_io_frame *ldio;
1652 struct megasas_pthru_frame *pthru;
1653 u32 sgcount;
1654 u16 max_cmd = instance->max_fw_cmds;
1655
1656 dev_err(&instance->pdev->dev, "[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1657 dev_err(&instance->pdev->dev, "[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1658 if (IS_DMA64)
1659 dev_err(&instance->pdev->dev, "[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1660 else
1661 dev_err(&instance->pdev->dev, "[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1662
1663 dev_err(&instance->pdev->dev, "[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1664 for (i = 0; i < max_cmd; i++) {
1665 cmd = instance->cmd_list[i];
1666 if (!cmd->scmd)
1667 continue;
1668 dev_err(&instance->pdev->dev, "[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1669 if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) {
1670 ldio = (struct megasas_io_frame *)cmd->frame;
1671 mfi_sgl = &ldio->sgl;
1672 sgcount = ldio->sge_count;
1673 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1674 " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1675 instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
1676 le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
1677 le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
1678 } else {
1679 pthru = (struct megasas_pthru_frame *) cmd->frame;
1680 mfi_sgl = &pthru->sgl;
1681 sgcount = pthru->sge_count;
1682 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1683 "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1684 instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
1685 pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
1686 le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
1687 }
1688 if (megasas_dbg_lvl & MEGASAS_DBG_LVL) {
1689 for (n = 0; n < sgcount; n++) {
1690 if (IS_DMA64)
1691 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%llx\n",
1692 le32_to_cpu(mfi_sgl->sge64[n].length),
1693 le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
1694 else
1695 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%x\n",
1696 le32_to_cpu(mfi_sgl->sge32[n].length),
1697 le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
1698 }
1699 }
1700 } /*for max_cmd*/
1701 dev_err(&instance->pdev->dev, "[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1702 for (i = 0; i < max_cmd; i++) {
1703
1704 cmd = instance->cmd_list[i];
1705
1706 if (cmd->sync_cmd == 1)
1707 dev_err(&instance->pdev->dev, "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1708 }
1709 dev_err(&instance->pdev->dev, "[%d]: Dumping Done\n\n",instance->host->host_no);
1710 }
1711
1712 u32
1713 megasas_build_and_issue_cmd(struct megasas_instance *instance,
1714 struct scsi_cmnd *scmd)
1715 {
1716 struct megasas_cmd *cmd;
1717 u32 frame_count;
1718
1719 cmd = megasas_get_cmd(instance);
1720 if (!cmd)
1721 return SCSI_MLQUEUE_HOST_BUSY;
1722
1723 /*
1724 * Logical drive command
1725 */
1726 if (megasas_cmd_type(scmd) == READ_WRITE_LDIO)
1727 frame_count = megasas_build_ldio(instance, scmd, cmd);
1728 else
1729 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1730
1731 if (!frame_count)
1732 goto out_return_cmd;
1733
1734 cmd->scmd = scmd;
1735 scmd->SCp.ptr = (char *)cmd;
1736
1737 /*
1738 * Issue the command to the FW
1739 */
1740 atomic_inc(&instance->fw_outstanding);
1741
1742 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1743 cmd->frame_count-1, instance->reg_set);
1744
1745 return 0;
1746 out_return_cmd:
1747 megasas_return_cmd(instance, cmd);
1748 return SCSI_MLQUEUE_HOST_BUSY;
1749 }
1750
1751
1752 /**
1753 * megasas_queue_command - Queue entry point
1754 * @scmd: SCSI command to be queued
1755 * @done: Callback entry point
1756 */
1757 static int
1758 megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
1759 {
1760 struct megasas_instance *instance;
1761 struct MR_PRIV_DEVICE *mr_device_priv_data;
1762
1763 instance = (struct megasas_instance *)
1764 scmd->device->host->hostdata;
1765
1766 if (instance->unload == 1) {
1767 scmd->result = DID_NO_CONNECT << 16;
1768 scmd->scsi_done(scmd);
1769 return 0;
1770 }
1771
1772 if (instance->issuepend_done == 0)
1773 return SCSI_MLQUEUE_HOST_BUSY;
1774
1775
1776 /* Check for an mpio path and adjust behavior */
1777 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
1778 if (megasas_check_mpio_paths(instance, scmd) ==
1779 (DID_REQUEUE << 16)) {
1780 return SCSI_MLQUEUE_HOST_BUSY;
1781 } else {
1782 scmd->result = DID_NO_CONNECT << 16;
1783 scmd->scsi_done(scmd);
1784 return 0;
1785 }
1786 }
1787
1788 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1789 scmd->result = DID_NO_CONNECT << 16;
1790 scmd->scsi_done(scmd);
1791 return 0;
1792 }
1793
1794 mr_device_priv_data = scmd->device->hostdata;
1795 if (!mr_device_priv_data) {
1796 scmd->result = DID_NO_CONNECT << 16;
1797 scmd->scsi_done(scmd);
1798 return 0;
1799 }
1800
1801 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1802 return SCSI_MLQUEUE_HOST_BUSY;
1803
1804 if (mr_device_priv_data->tm_busy)
1805 return SCSI_MLQUEUE_DEVICE_BUSY;
1806
1807
1808 scmd->result = 0;
1809
1810 if (MEGASAS_IS_LOGICAL(scmd->device) &&
1811 (scmd->device->id >= instance->fw_supported_vd_count ||
1812 scmd->device->lun)) {
1813 scmd->result = DID_BAD_TARGET << 16;
1814 goto out_done;
1815 }
1816
1817 if ((scmd->cmnd[0] == SYNCHRONIZE_CACHE) &&
1818 MEGASAS_IS_LOGICAL(scmd->device) &&
1819 (!instance->fw_sync_cache_support)) {
1820 scmd->result = DID_OK << 16;
1821 goto out_done;
1822 }
1823
1824 return instance->instancet->build_and_issue_cmd(instance, scmd);
1825
1826 out_done:
1827 scmd->scsi_done(scmd);
1828 return 0;
1829 }
1830
1831 static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1832 {
1833 int i;
1834
1835 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1836
1837 if ((megasas_mgmt_info.instance[i]) &&
1838 (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1839 return megasas_mgmt_info.instance[i];
1840 }
1841
1842 return NULL;
1843 }
1844
1845 /*
1846 * megasas_set_dynamic_target_properties -
1847 * Device property set by driver may not be static and it is required to be
1848 * updated after OCR
1849 *
1850 * set tm_capable.
1851 * set dma alignment (only for eedp protection enable vd).
1852 *
1853 * @sdev: OS provided scsi device
1854 *
1855 * Returns void
1856 */
1857 void megasas_set_dynamic_target_properties(struct scsi_device *sdev,
1858 bool is_target_prop)
1859 {
1860 u16 pd_index = 0, ld;
1861 u32 device_id;
1862 struct megasas_instance *instance;
1863 struct fusion_context *fusion;
1864 struct MR_PRIV_DEVICE *mr_device_priv_data;
1865 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1866 struct MR_LD_RAID *raid;
1867 struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1868
1869 instance = megasas_lookup_instance(sdev->host->host_no);
1870 fusion = instance->ctrl_context;
1871 mr_device_priv_data = sdev->hostdata;
1872
1873 if (!fusion || !mr_device_priv_data)
1874 return;
1875
1876 if (MEGASAS_IS_LOGICAL(sdev)) {
1877 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
1878 + sdev->id;
1879 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1880 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
1881 if (ld >= instance->fw_supported_vd_count)
1882 return;
1883 raid = MR_LdRaidGet(ld, local_map_ptr);
1884
1885 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER)
1886 blk_queue_update_dma_alignment(sdev->request_queue, 0x7);
1887
1888 mr_device_priv_data->is_tm_capable =
1889 raid->capability.tmCapable;
1890 } else if (instance->use_seqnum_jbod_fp) {
1891 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1892 sdev->id;
1893 pd_sync = (void *)fusion->pd_seq_sync
1894 [(instance->pd_seq_map_id - 1) & 1];
1895 mr_device_priv_data->is_tm_capable =
1896 pd_sync->seq[pd_index].capability.tmCapable;
1897 }
1898
1899 if (is_target_prop && instance->tgt_prop->reset_tmo) {
1900 /*
1901 * If FW provides a target reset timeout value, driver will use
1902 * it. If not set, fallback to default values.
1903 */
1904 mr_device_priv_data->target_reset_tmo =
1905 min_t(u8, instance->max_reset_tmo,
1906 instance->tgt_prop->reset_tmo);
1907 mr_device_priv_data->task_abort_tmo = instance->task_abort_tmo;
1908 } else {
1909 mr_device_priv_data->target_reset_tmo =
1910 MEGASAS_DEFAULT_TM_TIMEOUT;
1911 mr_device_priv_data->task_abort_tmo =
1912 MEGASAS_DEFAULT_TM_TIMEOUT;
1913 }
1914 }
1915
1916 /*
1917 * megasas_set_nvme_device_properties -
1918 * set nomerges=2
1919 * set virtual page boundary = 4K (current mr_nvme_pg_size is 4K).
1920 * set maximum io transfer = MDTS of NVME device provided by MR firmware.
1921 *
1922 * MR firmware provides value in KB. Caller of this function converts
1923 * kb into bytes.
1924 *
1925 * e.a MDTS=5 means 2^5 * nvme page size. (In case of 4K page size,
1926 * MR firmware provides value 128 as (32 * 4K) = 128K.
1927 *
1928 * @sdev: scsi device
1929 * @max_io_size: maximum io transfer size
1930 *
1931 */
1932 static inline void
1933 megasas_set_nvme_device_properties(struct scsi_device *sdev, u32 max_io_size)
1934 {
1935 struct megasas_instance *instance;
1936 u32 mr_nvme_pg_size;
1937
1938 instance = (struct megasas_instance *)sdev->host->hostdata;
1939 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
1940 MR_DEFAULT_NVME_PAGE_SIZE);
1941
1942 blk_queue_max_hw_sectors(sdev->request_queue, (max_io_size / 512));
1943
1944 blk_queue_flag_set(QUEUE_FLAG_NOMERGES, sdev->request_queue);
1945 blk_queue_virt_boundary(sdev->request_queue, mr_nvme_pg_size - 1);
1946 }
1947
1948 /*
1949 * megasas_set_fw_assisted_qd -
1950 * set device queue depth to can_queue
1951 * set device queue depth to fw assisted qd
1952 *
1953 * @sdev: scsi device
1954 * @is_target_prop true, if fw provided target properties.
1955 */
1956 static void megasas_set_fw_assisted_qd(struct scsi_device *sdev,
1957 bool is_target_prop)
1958 {
1959 u8 interface_type;
1960 u32 device_qd = MEGASAS_DEFAULT_CMD_PER_LUN;
1961 u32 tgt_device_qd;
1962 struct megasas_instance *instance;
1963 struct MR_PRIV_DEVICE *mr_device_priv_data;
1964
1965 instance = megasas_lookup_instance(sdev->host->host_no);
1966 mr_device_priv_data = sdev->hostdata;
1967 interface_type = mr_device_priv_data->interface_type;
1968
1969 switch (interface_type) {
1970 case SAS_PD:
1971 device_qd = MEGASAS_SAS_QD;
1972 break;
1973 case SATA_PD:
1974 device_qd = MEGASAS_SATA_QD;
1975 break;
1976 case NVME_PD:
1977 device_qd = MEGASAS_NVME_QD;
1978 break;
1979 }
1980
1981 if (is_target_prop) {
1982 tgt_device_qd = le32_to_cpu(instance->tgt_prop->device_qdepth);
1983 if (tgt_device_qd &&
1984 (tgt_device_qd <= instance->host->can_queue))
1985 device_qd = tgt_device_qd;
1986 }
1987
1988 if (instance->enable_sdev_max_qd && interface_type != UNKNOWN_DRIVE)
1989 device_qd = instance->host->can_queue;
1990
1991 scsi_change_queue_depth(sdev, device_qd);
1992 }
1993
1994 /*
1995 * megasas_set_static_target_properties -
1996 * Device property set by driver are static and it is not required to be
1997 * updated after OCR.
1998 *
1999 * set io timeout
2000 * set device queue depth
2001 * set nvme device properties. see - megasas_set_nvme_device_properties
2002 *
2003 * @sdev: scsi device
2004 * @is_target_prop true, if fw provided target properties.
2005 */
2006 static void megasas_set_static_target_properties(struct scsi_device *sdev,
2007 bool is_target_prop)
2008 {
2009 u32 max_io_size_kb = MR_DEFAULT_NVME_MDTS_KB;
2010 struct megasas_instance *instance;
2011
2012 instance = megasas_lookup_instance(sdev->host->host_no);
2013
2014 /*
2015 * The RAID firmware may require extended timeouts.
2016 */
2017 blk_queue_rq_timeout(sdev->request_queue, scmd_timeout * HZ);
2018
2019 /* max_io_size_kb will be set to non zero for
2020 * nvme based vd and syspd.
2021 */
2022 if (is_target_prop)
2023 max_io_size_kb = le32_to_cpu(instance->tgt_prop->max_io_size_kb);
2024
2025 if (instance->nvme_page_size && max_io_size_kb)
2026 megasas_set_nvme_device_properties(sdev, (max_io_size_kb << 10));
2027
2028 megasas_set_fw_assisted_qd(sdev, is_target_prop);
2029 }
2030
2031
2032 static int megasas_slave_configure(struct scsi_device *sdev)
2033 {
2034 u16 pd_index = 0;
2035 struct megasas_instance *instance;
2036 int ret_target_prop = DCMD_FAILED;
2037 bool is_target_prop = false;
2038
2039 instance = megasas_lookup_instance(sdev->host->host_no);
2040 if (instance->pd_list_not_supported) {
2041 if (!MEGASAS_IS_LOGICAL(sdev) && sdev->type == TYPE_DISK) {
2042 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2043 sdev->id;
2044 if (instance->pd_list[pd_index].driveState !=
2045 MR_PD_STATE_SYSTEM)
2046 return -ENXIO;
2047 }
2048 }
2049
2050 mutex_lock(&instance->reset_mutex);
2051 /* Send DCMD to Firmware and cache the information */
2052 if ((instance->pd_info) && !MEGASAS_IS_LOGICAL(sdev))
2053 megasas_get_pd_info(instance, sdev);
2054
2055 /* Some ventura firmware may not have instance->nvme_page_size set.
2056 * Do not send MR_DCMD_DRV_GET_TARGET_PROP
2057 */
2058 if ((instance->tgt_prop) && (instance->nvme_page_size))
2059 ret_target_prop = megasas_get_target_prop(instance, sdev);
2060
2061 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
2062 megasas_set_static_target_properties(sdev, is_target_prop);
2063
2064 /* This sdev property may change post OCR */
2065 megasas_set_dynamic_target_properties(sdev, is_target_prop);
2066
2067 mutex_unlock(&instance->reset_mutex);
2068
2069 return 0;
2070 }
2071
2072 static int megasas_slave_alloc(struct scsi_device *sdev)
2073 {
2074 u16 pd_index = 0;
2075 struct megasas_instance *instance ;
2076 struct MR_PRIV_DEVICE *mr_device_priv_data;
2077
2078 instance = megasas_lookup_instance(sdev->host->host_no);
2079 if (!MEGASAS_IS_LOGICAL(sdev)) {
2080 /*
2081 * Open the OS scan to the SYSTEM PD
2082 */
2083 pd_index =
2084 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2085 sdev->id;
2086 if ((instance->pd_list_not_supported ||
2087 instance->pd_list[pd_index].driveState ==
2088 MR_PD_STATE_SYSTEM)) {
2089 goto scan_target;
2090 }
2091 return -ENXIO;
2092 }
2093
2094 scan_target:
2095 mr_device_priv_data = kzalloc(sizeof(*mr_device_priv_data),
2096 GFP_KERNEL);
2097 if (!mr_device_priv_data)
2098 return -ENOMEM;
2099 sdev->hostdata = mr_device_priv_data;
2100
2101 atomic_set(&mr_device_priv_data->r1_ldio_hint,
2102 instance->r1_ldio_hint_default);
2103 return 0;
2104 }
2105
2106 static void megasas_slave_destroy(struct scsi_device *sdev)
2107 {
2108 kfree(sdev->hostdata);
2109 sdev->hostdata = NULL;
2110 }
2111
2112 /*
2113 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a
2114 * kill adapter
2115 * @instance: Adapter soft state
2116 *
2117 */
2118 static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance)
2119 {
2120 int i;
2121 struct megasas_cmd *cmd_mfi;
2122 struct megasas_cmd_fusion *cmd_fusion;
2123 struct fusion_context *fusion = instance->ctrl_context;
2124
2125 /* Find all outstanding ioctls */
2126 if (fusion) {
2127 for (i = 0; i < instance->max_fw_cmds; i++) {
2128 cmd_fusion = fusion->cmd_list[i];
2129 if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) {
2130 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
2131 if (cmd_mfi->sync_cmd &&
2132 (cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)) {
2133 cmd_mfi->frame->hdr.cmd_status =
2134 MFI_STAT_WRONG_STATE;
2135 megasas_complete_cmd(instance,
2136 cmd_mfi, DID_OK);
2137 }
2138 }
2139 }
2140 } else {
2141 for (i = 0; i < instance->max_fw_cmds; i++) {
2142 cmd_mfi = instance->cmd_list[i];
2143 if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd !=
2144 MFI_CMD_ABORT)
2145 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
2146 }
2147 }
2148 }
2149
2150
2151 void megaraid_sas_kill_hba(struct megasas_instance *instance)
2152 {
2153 /* Set critical error to block I/O & ioctls in case caller didn't */
2154 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2155 /* Wait 1 second to ensure IO or ioctls in build have posted */
2156 msleep(1000);
2157 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2158 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2159 (instance->adapter_type != MFI_SERIES)) {
2160 if (!instance->requestorId) {
2161 writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
2162 /* Flush */
2163 readl(&instance->reg_set->doorbell);
2164 }
2165 if (instance->requestorId && instance->peerIsPresent)
2166 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
2167 } else {
2168 writel(MFI_STOP_ADP,
2169 &instance->reg_set->inbound_doorbell);
2170 }
2171 /* Complete outstanding ioctls when adapter is killed */
2172 megasas_complete_outstanding_ioctls(instance);
2173 }
2174
2175 /**
2176 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
2177 * restored to max value
2178 * @instance: Adapter soft state
2179 *
2180 */
2181 void
2182 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
2183 {
2184 unsigned long flags;
2185
2186 if (instance->flag & MEGASAS_FW_BUSY
2187 && time_after(jiffies, instance->last_time + 5 * HZ)
2188 && atomic_read(&instance->fw_outstanding) <
2189 instance->throttlequeuedepth + 1) {
2190
2191 spin_lock_irqsave(instance->host->host_lock, flags);
2192 instance->flag &= ~MEGASAS_FW_BUSY;
2193
2194 instance->host->can_queue = instance->cur_can_queue;
2195 spin_unlock_irqrestore(instance->host->host_lock, flags);
2196 }
2197 }
2198
2199 /**
2200 * megasas_complete_cmd_dpc - Returns FW's controller structure
2201 * @instance_addr: Address of adapter soft state
2202 *
2203 * Tasklet to complete cmds
2204 */
2205 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
2206 {
2207 u32 producer;
2208 u32 consumer;
2209 u32 context;
2210 struct megasas_cmd *cmd;
2211 struct megasas_instance *instance =
2212 (struct megasas_instance *)instance_addr;
2213 unsigned long flags;
2214
2215 /* If we have already declared adapter dead, donot complete cmds */
2216 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
2217 return;
2218
2219 spin_lock_irqsave(&instance->completion_lock, flags);
2220
2221 producer = le32_to_cpu(*instance->producer);
2222 consumer = le32_to_cpu(*instance->consumer);
2223
2224 while (consumer != producer) {
2225 context = le32_to_cpu(instance->reply_queue[consumer]);
2226 if (context >= instance->max_fw_cmds) {
2227 dev_err(&instance->pdev->dev, "Unexpected context value %x\n",
2228 context);
2229 BUG();
2230 }
2231
2232 cmd = instance->cmd_list[context];
2233
2234 megasas_complete_cmd(instance, cmd, DID_OK);
2235
2236 consumer++;
2237 if (consumer == (instance->max_fw_cmds + 1)) {
2238 consumer = 0;
2239 }
2240 }
2241
2242 *instance->consumer = cpu_to_le32(producer);
2243
2244 spin_unlock_irqrestore(&instance->completion_lock, flags);
2245
2246 /*
2247 * Check if we can restore can_queue
2248 */
2249 megasas_check_and_restore_queue_depth(instance);
2250 }
2251
2252 static void megasas_sriov_heartbeat_handler(struct timer_list *t);
2253
2254 /**
2255 * megasas_start_timer - Initializes sriov heartbeat timer object
2256 * @instance: Adapter soft state
2257 *
2258 */
2259 void megasas_start_timer(struct megasas_instance *instance)
2260 {
2261 struct timer_list *timer = &instance->sriov_heartbeat_timer;
2262
2263 timer_setup(timer, megasas_sriov_heartbeat_handler, 0);
2264 timer->expires = jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF;
2265 add_timer(timer);
2266 }
2267
2268 static void
2269 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
2270
2271 static void
2272 process_fw_state_change_wq(struct work_struct *work);
2273
2274 static void megasas_do_ocr(struct megasas_instance *instance)
2275 {
2276 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2277 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2278 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2279 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
2280 }
2281 instance->instancet->disable_intr(instance);
2282 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
2283 instance->issuepend_done = 0;
2284
2285 atomic_set(&instance->fw_outstanding, 0);
2286 megasas_internal_reset_defer_cmds(instance);
2287 process_fw_state_change_wq(&instance->work_init);
2288 }
2289
2290 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
2291 int initial)
2292 {
2293 struct megasas_cmd *cmd;
2294 struct megasas_dcmd_frame *dcmd;
2295 struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
2296 dma_addr_t new_affiliation_111_h;
2297 int ld, retval = 0;
2298 u8 thisVf;
2299
2300 cmd = megasas_get_cmd(instance);
2301
2302 if (!cmd) {
2303 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:"
2304 "Failed to get cmd for scsi%d\n",
2305 instance->host->host_no);
2306 return -ENOMEM;
2307 }
2308
2309 dcmd = &cmd->frame->dcmd;
2310
2311 if (!instance->vf_affiliation_111) {
2312 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2313 "affiliation for scsi%d\n", instance->host->host_no);
2314 megasas_return_cmd(instance, cmd);
2315 return -ENOMEM;
2316 }
2317
2318 if (initial)
2319 memset(instance->vf_affiliation_111, 0,
2320 sizeof(struct MR_LD_VF_AFFILIATION_111));
2321 else {
2322 new_affiliation_111 =
2323 dma_alloc_coherent(&instance->pdev->dev,
2324 sizeof(struct MR_LD_VF_AFFILIATION_111),
2325 &new_affiliation_111_h, GFP_KERNEL);
2326 if (!new_affiliation_111) {
2327 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2328 "memory for new affiliation for scsi%d\n",
2329 instance->host->host_no);
2330 megasas_return_cmd(instance, cmd);
2331 return -ENOMEM;
2332 }
2333 }
2334
2335 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2336
2337 dcmd->cmd = MFI_CMD_DCMD;
2338 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2339 dcmd->sge_count = 1;
2340 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2341 dcmd->timeout = 0;
2342 dcmd->pad_0 = 0;
2343 dcmd->data_xfer_len =
2344 cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111));
2345 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111);
2346
2347 if (initial)
2348 dcmd->sgl.sge32[0].phys_addr =
2349 cpu_to_le32(instance->vf_affiliation_111_h);
2350 else
2351 dcmd->sgl.sge32[0].phys_addr =
2352 cpu_to_le32(new_affiliation_111_h);
2353
2354 dcmd->sgl.sge32[0].length = cpu_to_le32(
2355 sizeof(struct MR_LD_VF_AFFILIATION_111));
2356
2357 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2358 "scsi%d\n", instance->host->host_no);
2359
2360 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2361 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2362 " failed with status 0x%x for scsi%d\n",
2363 dcmd->cmd_status, instance->host->host_no);
2364 retval = 1; /* Do a scan if we couldn't get affiliation */
2365 goto out;
2366 }
2367
2368 if (!initial) {
2369 thisVf = new_affiliation_111->thisVf;
2370 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
2371 if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
2372 new_affiliation_111->map[ld].policy[thisVf]) {
2373 dev_warn(&instance->pdev->dev, "SR-IOV: "
2374 "Got new LD/VF affiliation for scsi%d\n",
2375 instance->host->host_no);
2376 memcpy(instance->vf_affiliation_111,
2377 new_affiliation_111,
2378 sizeof(struct MR_LD_VF_AFFILIATION_111));
2379 retval = 1;
2380 goto out;
2381 }
2382 }
2383 out:
2384 if (new_affiliation_111) {
2385 dma_free_coherent(&instance->pdev->dev,
2386 sizeof(struct MR_LD_VF_AFFILIATION_111),
2387 new_affiliation_111,
2388 new_affiliation_111_h);
2389 }
2390
2391 megasas_return_cmd(instance, cmd);
2392
2393 return retval;
2394 }
2395
2396 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
2397 int initial)
2398 {
2399 struct megasas_cmd *cmd;
2400 struct megasas_dcmd_frame *dcmd;
2401 struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
2402 struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
2403 dma_addr_t new_affiliation_h;
2404 int i, j, retval = 0, found = 0, doscan = 0;
2405 u8 thisVf;
2406
2407 cmd = megasas_get_cmd(instance);
2408
2409 if (!cmd) {
2410 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: "
2411 "Failed to get cmd for scsi%d\n",
2412 instance->host->host_no);
2413 return -ENOMEM;
2414 }
2415
2416 dcmd = &cmd->frame->dcmd;
2417
2418 if (!instance->vf_affiliation) {
2419 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2420 "affiliation for scsi%d\n", instance->host->host_no);
2421 megasas_return_cmd(instance, cmd);
2422 return -ENOMEM;
2423 }
2424
2425 if (initial)
2426 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2427 sizeof(struct MR_LD_VF_AFFILIATION));
2428 else {
2429 new_affiliation =
2430 dma_alloc_coherent(&instance->pdev->dev,
2431 (MAX_LOGICAL_DRIVES + 1) * sizeof(struct MR_LD_VF_AFFILIATION),
2432 &new_affiliation_h, GFP_KERNEL);
2433 if (!new_affiliation) {
2434 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2435 "memory for new affiliation for scsi%d\n",
2436 instance->host->host_no);
2437 megasas_return_cmd(instance, cmd);
2438 return -ENOMEM;
2439 }
2440 }
2441
2442 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2443
2444 dcmd->cmd = MFI_CMD_DCMD;
2445 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2446 dcmd->sge_count = 1;
2447 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2448 dcmd->timeout = 0;
2449 dcmd->pad_0 = 0;
2450 dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2451 sizeof(struct MR_LD_VF_AFFILIATION));
2452 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS);
2453
2454 if (initial)
2455 dcmd->sgl.sge32[0].phys_addr =
2456 cpu_to_le32(instance->vf_affiliation_h);
2457 else
2458 dcmd->sgl.sge32[0].phys_addr =
2459 cpu_to_le32(new_affiliation_h);
2460
2461 dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2462 sizeof(struct MR_LD_VF_AFFILIATION));
2463
2464 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2465 "scsi%d\n", instance->host->host_no);
2466
2467
2468 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2469 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2470 " failed with status 0x%x for scsi%d\n",
2471 dcmd->cmd_status, instance->host->host_no);
2472 retval = 1; /* Do a scan if we couldn't get affiliation */
2473 goto out;
2474 }
2475
2476 if (!initial) {
2477 if (!new_affiliation->ldCount) {
2478 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2479 "affiliation for passive path for scsi%d\n",
2480 instance->host->host_no);
2481 retval = 1;
2482 goto out;
2483 }
2484 newmap = new_affiliation->map;
2485 savedmap = instance->vf_affiliation->map;
2486 thisVf = new_affiliation->thisVf;
2487 for (i = 0 ; i < new_affiliation->ldCount; i++) {
2488 found = 0;
2489 for (j = 0; j < instance->vf_affiliation->ldCount;
2490 j++) {
2491 if (newmap->ref.targetId ==
2492 savedmap->ref.targetId) {
2493 found = 1;
2494 if (newmap->policy[thisVf] !=
2495 savedmap->policy[thisVf]) {
2496 doscan = 1;
2497 goto out;
2498 }
2499 }
2500 savedmap = (struct MR_LD_VF_MAP *)
2501 ((unsigned char *)savedmap +
2502 savedmap->size);
2503 }
2504 if (!found && newmap->policy[thisVf] !=
2505 MR_LD_ACCESS_HIDDEN) {
2506 doscan = 1;
2507 goto out;
2508 }
2509 newmap = (struct MR_LD_VF_MAP *)
2510 ((unsigned char *)newmap + newmap->size);
2511 }
2512
2513 newmap = new_affiliation->map;
2514 savedmap = instance->vf_affiliation->map;
2515
2516 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
2517 found = 0;
2518 for (j = 0 ; j < new_affiliation->ldCount; j++) {
2519 if (savedmap->ref.targetId ==
2520 newmap->ref.targetId) {
2521 found = 1;
2522 if (savedmap->policy[thisVf] !=
2523 newmap->policy[thisVf]) {
2524 doscan = 1;
2525 goto out;
2526 }
2527 }
2528 newmap = (struct MR_LD_VF_MAP *)
2529 ((unsigned char *)newmap +
2530 newmap->size);
2531 }
2532 if (!found && savedmap->policy[thisVf] !=
2533 MR_LD_ACCESS_HIDDEN) {
2534 doscan = 1;
2535 goto out;
2536 }
2537 savedmap = (struct MR_LD_VF_MAP *)
2538 ((unsigned char *)savedmap +
2539 savedmap->size);
2540 }
2541 }
2542 out:
2543 if (doscan) {
2544 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2545 "affiliation for scsi%d\n", instance->host->host_no);
2546 memcpy(instance->vf_affiliation, new_affiliation,
2547 new_affiliation->size);
2548 retval = 1;
2549 }
2550
2551 if (new_affiliation)
2552 dma_free_coherent(&instance->pdev->dev,
2553 (MAX_LOGICAL_DRIVES + 1) *
2554 sizeof(struct MR_LD_VF_AFFILIATION),
2555 new_affiliation, new_affiliation_h);
2556 megasas_return_cmd(instance, cmd);
2557
2558 return retval;
2559 }
2560
2561 /* This function will get the current SR-IOV LD/VF affiliation */
2562 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
2563 int initial)
2564 {
2565 int retval;
2566
2567 if (instance->PlasmaFW111)
2568 retval = megasas_get_ld_vf_affiliation_111(instance, initial);
2569 else
2570 retval = megasas_get_ld_vf_affiliation_12(instance, initial);
2571 return retval;
2572 }
2573
2574 /* This function will tell FW to start the SR-IOV heartbeat */
2575 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2576 int initial)
2577 {
2578 struct megasas_cmd *cmd;
2579 struct megasas_dcmd_frame *dcmd;
2580 int retval = 0;
2581
2582 cmd = megasas_get_cmd(instance);
2583
2584 if (!cmd) {
2585 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: "
2586 "Failed to get cmd for scsi%d\n",
2587 instance->host->host_no);
2588 return -ENOMEM;
2589 }
2590
2591 dcmd = &cmd->frame->dcmd;
2592
2593 if (initial) {
2594 instance->hb_host_mem =
2595 dma_alloc_coherent(&instance->pdev->dev,
2596 sizeof(struct MR_CTRL_HB_HOST_MEM),
2597 &instance->hb_host_mem_h,
2598 GFP_KERNEL);
2599 if (!instance->hb_host_mem) {
2600 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate"
2601 " memory for heartbeat host memory for scsi%d\n",
2602 instance->host->host_no);
2603 retval = -ENOMEM;
2604 goto out;
2605 }
2606 }
2607
2608 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2609
2610 dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM));
2611 dcmd->cmd = MFI_CMD_DCMD;
2612 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2613 dcmd->sge_count = 1;
2614 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2615 dcmd->timeout = 0;
2616 dcmd->pad_0 = 0;
2617 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2618 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC);
2619
2620 megasas_set_dma_settings(instance, dcmd, instance->hb_host_mem_h,
2621 sizeof(struct MR_CTRL_HB_HOST_MEM));
2622
2623 dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n",
2624 instance->host->host_no);
2625
2626 if ((instance->adapter_type != MFI_SERIES) &&
2627 !instance->mask_interrupts)
2628 retval = megasas_issue_blocked_cmd(instance, cmd,
2629 MEGASAS_ROUTINE_WAIT_TIME_VF);
2630 else
2631 retval = megasas_issue_polled(instance, cmd);
2632
2633 if (retval) {
2634 dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2635 "_MEM_ALLOC DCMD %s for scsi%d\n",
2636 (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ?
2637 "timed out" : "failed", instance->host->host_no);
2638 retval = 1;
2639 }
2640
2641 out:
2642 megasas_return_cmd(instance, cmd);
2643
2644 return retval;
2645 }
2646
2647 /* Handler for SR-IOV heartbeat */
2648 static void megasas_sriov_heartbeat_handler(struct timer_list *t)
2649 {
2650 struct megasas_instance *instance =
2651 from_timer(instance, t, sriov_heartbeat_timer);
2652
2653 if (instance->hb_host_mem->HB.fwCounter !=
2654 instance->hb_host_mem->HB.driverCounter) {
2655 instance->hb_host_mem->HB.driverCounter =
2656 instance->hb_host_mem->HB.fwCounter;
2657 mod_timer(&instance->sriov_heartbeat_timer,
2658 jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2659 } else {
2660 dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never "
2661 "completed for scsi%d\n", instance->host->host_no);
2662 schedule_work(&instance->work_init);
2663 }
2664 }
2665
2666 /**
2667 * megasas_wait_for_outstanding - Wait for all outstanding cmds
2668 * @instance: Adapter soft state
2669 *
2670 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
2671 * complete all its outstanding commands. Returns error if one or more IOs
2672 * are pending after this time period. It also marks the controller dead.
2673 */
2674 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2675 {
2676 int i, sl, outstanding;
2677 u32 reset_index;
2678 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
2679 unsigned long flags;
2680 struct list_head clist_local;
2681 struct megasas_cmd *reset_cmd;
2682 u32 fw_state;
2683
2684 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2685 dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n",
2686 __func__, __LINE__);
2687 return FAILED;
2688 }
2689
2690 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2691
2692 INIT_LIST_HEAD(&clist_local);
2693 spin_lock_irqsave(&instance->hba_lock, flags);
2694 list_splice_init(&instance->internal_reset_pending_q,
2695 &clist_local);
2696 spin_unlock_irqrestore(&instance->hba_lock, flags);
2697
2698 dev_notice(&instance->pdev->dev, "HBA reset wait ...\n");
2699 for (i = 0; i < wait_time; i++) {
2700 msleep(1000);
2701 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL)
2702 break;
2703 }
2704
2705 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2706 dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n");
2707 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2708 return FAILED;
2709 }
2710
2711 reset_index = 0;
2712 while (!list_empty(&clist_local)) {
2713 reset_cmd = list_entry((&clist_local)->next,
2714 struct megasas_cmd, list);
2715 list_del_init(&reset_cmd->list);
2716 if (reset_cmd->scmd) {
2717 reset_cmd->scmd->result = DID_REQUEUE << 16;
2718 dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n",
2719 reset_index, reset_cmd,
2720 reset_cmd->scmd->cmnd[0]);
2721
2722 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
2723 megasas_return_cmd(instance, reset_cmd);
2724 } else if (reset_cmd->sync_cmd) {
2725 dev_notice(&instance->pdev->dev, "%p synch cmds"
2726 "reset queue\n",
2727 reset_cmd);
2728
2729 reset_cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
2730 instance->instancet->fire_cmd(instance,
2731 reset_cmd->frame_phys_addr,
2732 0, instance->reg_set);
2733 } else {
2734 dev_notice(&instance->pdev->dev, "%p unexpected"
2735 "cmds lst\n",
2736 reset_cmd);
2737 }
2738 reset_index++;
2739 }
2740
2741 return SUCCESS;
2742 }
2743
2744 for (i = 0; i < resetwaittime; i++) {
2745 outstanding = atomic_read(&instance->fw_outstanding);
2746
2747 if (!outstanding)
2748 break;
2749
2750 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2751 dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
2752 "commands to complete\n",i,outstanding);
2753 /*
2754 * Call cmd completion routine. Cmd to be
2755 * be completed directly without depending on isr.
2756 */
2757 megasas_complete_cmd_dpc((unsigned long)instance);
2758 }
2759
2760 msleep(1000);
2761 }
2762
2763 i = 0;
2764 outstanding = atomic_read(&instance->fw_outstanding);
2765 fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2766
2767 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2768 goto no_outstanding;
2769
2770 if (instance->disableOnlineCtrlReset)
2771 goto kill_hba_and_failed;
2772 do {
2773 if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) {
2774 dev_info(&instance->pdev->dev,
2775 "%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, outstanding 0x%x\n",
2776 __func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding));
2777 if (i == 3)
2778 goto kill_hba_and_failed;
2779 megasas_do_ocr(instance);
2780
2781 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2782 dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n",
2783 __func__, __LINE__);
2784 return FAILED;
2785 }
2786 dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n",
2787 __func__, __LINE__);
2788
2789 for (sl = 0; sl < 10; sl++)
2790 msleep(500);
2791
2792 outstanding = atomic_read(&instance->fw_outstanding);
2793
2794 fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2795 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2796 goto no_outstanding;
2797 }
2798 i++;
2799 } while (i <= 3);
2800
2801 no_outstanding:
2802
2803 dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n",
2804 __func__, __LINE__);
2805 return SUCCESS;
2806
2807 kill_hba_and_failed:
2808
2809 /* Reset not supported, kill adapter */
2810 dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d"
2811 " disableOnlineCtrlReset %d fw_outstanding %d \n",
2812 __func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset,
2813 atomic_read(&instance->fw_outstanding));
2814 megasas_dump_pending_frames(instance);
2815 megaraid_sas_kill_hba(instance);
2816
2817 return FAILED;
2818 }
2819
2820 /**
2821 * megasas_generic_reset - Generic reset routine
2822 * @scmd: Mid-layer SCSI command
2823 *
2824 * This routine implements a generic reset handler for device, bus and host
2825 * reset requests. Device, bus and host specific reset handlers can use this
2826 * function after they do their specific tasks.
2827 */
2828 static int megasas_generic_reset(struct scsi_cmnd *scmd)
2829 {
2830 int ret_val;
2831 struct megasas_instance *instance;
2832
2833 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2834
2835 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2836 scmd->cmnd[0], scmd->retries);
2837
2838 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2839 dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n");
2840 return FAILED;
2841 }
2842
2843 ret_val = megasas_wait_for_outstanding(instance);
2844 if (ret_val == SUCCESS)
2845 dev_notice(&instance->pdev->dev, "reset successful\n");
2846 else
2847 dev_err(&instance->pdev->dev, "failed to do reset\n");
2848
2849 return ret_val;
2850 }
2851
2852 /**
2853 * megasas_reset_timer - quiesce the adapter if required
2854 * @scmd: scsi cmnd
2855 *
2856 * Sets the FW busy flag and reduces the host->can_queue if the
2857 * cmd has not been completed within the timeout period.
2858 */
2859 static enum
2860 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
2861 {
2862 struct megasas_instance *instance;
2863 unsigned long flags;
2864
2865 if (time_after(jiffies, scmd->jiffies_at_alloc +
2866 (scmd_timeout * 2) * HZ)) {
2867 return BLK_EH_DONE;
2868 }
2869
2870 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2871 if (!(instance->flag & MEGASAS_FW_BUSY)) {
2872 /* FW is busy, throttle IO */
2873 spin_lock_irqsave(instance->host->host_lock, flags);
2874
2875 instance->host->can_queue = instance->throttlequeuedepth;
2876 instance->last_time = jiffies;
2877 instance->flag |= MEGASAS_FW_BUSY;
2878
2879 spin_unlock_irqrestore(instance->host->host_lock, flags);
2880 }
2881 return BLK_EH_RESET_TIMER;
2882 }
2883
2884 /**
2885 * megasas_dump - This function will print hexdump of provided buffer.
2886 * @buf: Buffer to be dumped
2887 * @sz: Size in bytes
2888 * @format: Different formats of dumping e.g. format=n will
2889 * cause only 'n' 32 bit words to be dumped in a single
2890 * line.
2891 */
2892 inline void
2893 megasas_dump(void *buf, int sz, int format)
2894 {
2895 int i;
2896 __le32 *buf_loc = (__le32 *)buf;
2897
2898 for (i = 0; i < (sz / sizeof(__le32)); i++) {
2899 if ((i % format) == 0) {
2900 if (i != 0)
2901 printk(KERN_CONT "\n");
2902 printk(KERN_CONT "%08x: ", (i * 4));
2903 }
2904 printk(KERN_CONT "%08x ", le32_to_cpu(buf_loc[i]));
2905 }
2906 printk(KERN_CONT "\n");
2907 }
2908
2909 /**
2910 * megasas_dump_reg_set - This function will print hexdump of register set
2911 * @buf: Buffer to be dumped
2912 * @sz: Size in bytes
2913 * @format: Different formats of dumping e.g. format=n will
2914 * cause only 'n' 32 bit words to be dumped in a
2915 * single line.
2916 */
2917 inline void
2918 megasas_dump_reg_set(void __iomem *reg_set)
2919 {
2920 unsigned int i, sz = 256;
2921 u32 __iomem *reg = (u32 __iomem *)reg_set;
2922
2923 for (i = 0; i < (sz / sizeof(u32)); i++)
2924 printk("%08x: %08x\n", (i * 4), readl(&reg[i]));
2925 }
2926
2927 /**
2928 * megasas_dump_fusion_io - This function will print key details
2929 * of SCSI IO
2930 * @scmd: SCSI command pointer of SCSI IO
2931 */
2932 void
2933 megasas_dump_fusion_io(struct scsi_cmnd *scmd)
2934 {
2935 struct megasas_cmd_fusion *cmd;
2936 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2937 struct megasas_instance *instance;
2938
2939 cmd = (struct megasas_cmd_fusion *)scmd->SCp.ptr;
2940 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2941
2942 scmd_printk(KERN_INFO, scmd,
2943 "scmd: (0x%p) retries: 0x%x allowed: 0x%x\n",
2944 scmd, scmd->retries, scmd->allowed);
2945 scsi_print_command(scmd);
2946
2947 if (cmd) {
2948 req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
2949 scmd_printk(KERN_INFO, scmd, "Request descriptor details:\n");
2950 scmd_printk(KERN_INFO, scmd,
2951 "RequestFlags:0x%x MSIxIndex:0x%x SMID:0x%x LMID:0x%x DevHandle:0x%x\n",
2952 req_desc->SCSIIO.RequestFlags,
2953 req_desc->SCSIIO.MSIxIndex, req_desc->SCSIIO.SMID,
2954 req_desc->SCSIIO.LMID, req_desc->SCSIIO.DevHandle);
2955
2956 printk(KERN_INFO "IO request frame:\n");
2957 megasas_dump(cmd->io_request,
2958 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE, 8);
2959 printk(KERN_INFO "Chain frame:\n");
2960 megasas_dump(cmd->sg_frame,
2961 instance->max_chain_frame_sz, 8);
2962 }
2963
2964 }
2965
2966 /*
2967 * megasas_dump_sys_regs - This function will dump system registers through
2968 * sysfs.
2969 * @reg_set: Pointer to System register set.
2970 * @buf: Buffer to which output is to be written.
2971 * @return: Number of bytes written to buffer.
2972 */
2973 static inline ssize_t
2974 megasas_dump_sys_regs(void __iomem *reg_set, char *buf)
2975 {
2976 unsigned int i, sz = 256;
2977 int bytes_wrote = 0;
2978 char *loc = (char *)buf;
2979 u32 __iomem *reg = (u32 __iomem *)reg_set;
2980
2981 for (i = 0; i < sz / sizeof(u32); i++) {
2982 bytes_wrote += snprintf(loc + bytes_wrote, PAGE_SIZE,
2983 "%08x: %08x\n", (i * 4),
2984 readl(&reg[i]));
2985 }
2986 return bytes_wrote;
2987 }
2988
2989 /**
2990 * megasas_reset_bus_host - Bus & host reset handler entry point
2991 */
2992 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
2993 {
2994 int ret;
2995 struct megasas_instance *instance;
2996
2997 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2998
2999 scmd_printk(KERN_INFO, scmd,
3000 "OCR is requested due to IO timeout!!\n");
3001
3002 scmd_printk(KERN_INFO, scmd,
3003 "SCSI host state: %d SCSI host busy: %d FW outstanding: %d\n",
3004 scmd->device->host->shost_state,
3005 scsi_host_busy(scmd->device->host),
3006 atomic_read(&instance->fw_outstanding));
3007 /*
3008 * First wait for all commands to complete
3009 */
3010 if (instance->adapter_type == MFI_SERIES) {
3011 ret = megasas_generic_reset(scmd);
3012 } else {
3013 megasas_dump_fusion_io(scmd);
3014 ret = megasas_reset_fusion(scmd->device->host,
3015 SCSIIO_TIMEOUT_OCR);
3016 }
3017
3018 return ret;
3019 }
3020
3021 /**
3022 * megasas_task_abort - Issues task abort request to firmware
3023 * (supported only for fusion adapters)
3024 * @scmd: SCSI command pointer
3025 */
3026 static int megasas_task_abort(struct scsi_cmnd *scmd)
3027 {
3028 int ret;
3029 struct megasas_instance *instance;
3030
3031 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3032
3033 if (instance->adapter_type != MFI_SERIES)
3034 ret = megasas_task_abort_fusion(scmd);
3035 else {
3036 sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n");
3037 ret = FAILED;
3038 }
3039
3040 return ret;
3041 }
3042
3043 /**
3044 * megasas_reset_target: Issues target reset request to firmware
3045 * (supported only for fusion adapters)
3046 * @scmd: SCSI command pointer
3047 */
3048 static int megasas_reset_target(struct scsi_cmnd *scmd)
3049 {
3050 int ret;
3051 struct megasas_instance *instance;
3052
3053 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3054
3055 if (instance->adapter_type != MFI_SERIES)
3056 ret = megasas_reset_target_fusion(scmd);
3057 else {
3058 sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n");
3059 ret = FAILED;
3060 }
3061
3062 return ret;
3063 }
3064
3065 /**
3066 * megasas_bios_param - Returns disk geometry for a disk
3067 * @sdev: device handle
3068 * @bdev: block device
3069 * @capacity: drive capacity
3070 * @geom: geometry parameters
3071 */
3072 static int
3073 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
3074 sector_t capacity, int geom[])
3075 {
3076 int heads;
3077 int sectors;
3078 sector_t cylinders;
3079 unsigned long tmp;
3080
3081 /* Default heads (64) & sectors (32) */
3082 heads = 64;
3083 sectors = 32;
3084
3085 tmp = heads * sectors;
3086 cylinders = capacity;
3087
3088 sector_div(cylinders, tmp);
3089
3090 /*
3091 * Handle extended translation size for logical drives > 1Gb
3092 */
3093
3094 if (capacity >= 0x200000) {
3095 heads = 255;
3096 sectors = 63;
3097 tmp = heads*sectors;
3098 cylinders = capacity;
3099 sector_div(cylinders, tmp);
3100 }
3101
3102 geom[0] = heads;
3103 geom[1] = sectors;
3104 geom[2] = cylinders;
3105
3106 return 0;
3107 }
3108
3109 static void megasas_aen_polling(struct work_struct *work);
3110
3111 /**
3112 * megasas_service_aen - Processes an event notification
3113 * @instance: Adapter soft state
3114 * @cmd: AEN command completed by the ISR
3115 *
3116 * For AEN, driver sends a command down to FW that is held by the FW till an
3117 * event occurs. When an event of interest occurs, FW completes the command
3118 * that it was previously holding.
3119 *
3120 * This routines sends SIGIO signal to processes that have registered with the
3121 * driver for AEN.
3122 */
3123 static void
3124 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
3125 {
3126 unsigned long flags;
3127
3128 /*
3129 * Don't signal app if it is just an aborted previously registered aen
3130 */
3131 if ((!cmd->abort_aen) && (instance->unload == 0)) {
3132 spin_lock_irqsave(&poll_aen_lock, flags);
3133 megasas_poll_wait_aen = 1;
3134 spin_unlock_irqrestore(&poll_aen_lock, flags);
3135 wake_up(&megasas_poll_wait);
3136 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
3137 }
3138 else
3139 cmd->abort_aen = 0;
3140
3141 instance->aen_cmd = NULL;
3142
3143 megasas_return_cmd(instance, cmd);
3144
3145 if ((instance->unload == 0) &&
3146 ((instance->issuepend_done == 1))) {
3147 struct megasas_aen_event *ev;
3148
3149 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
3150 if (!ev) {
3151 dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n");
3152 } else {
3153 ev->instance = instance;
3154 instance->ev = ev;
3155 INIT_DELAYED_WORK(&ev->hotplug_work,
3156 megasas_aen_polling);
3157 schedule_delayed_work(&ev->hotplug_work, 0);
3158 }
3159 }
3160 }
3161
3162 static ssize_t
3163 fw_crash_buffer_store(struct device *cdev,
3164 struct device_attribute *attr, const char *buf, size_t count)
3165 {
3166 struct Scsi_Host *shost = class_to_shost(cdev);
3167 struct megasas_instance *instance =
3168 (struct megasas_instance *) shost->hostdata;
3169 int val = 0;
3170 unsigned long flags;
3171
3172 if (kstrtoint(buf, 0, &val) != 0)
3173 return -EINVAL;
3174
3175 spin_lock_irqsave(&instance->crashdump_lock, flags);
3176 instance->fw_crash_buffer_offset = val;
3177 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3178 return strlen(buf);
3179 }
3180
3181 static ssize_t
3182 fw_crash_buffer_show(struct device *cdev,
3183 struct device_attribute *attr, char *buf)
3184 {
3185 struct Scsi_Host *shost = class_to_shost(cdev);
3186 struct megasas_instance *instance =
3187 (struct megasas_instance *) shost->hostdata;
3188 u32 size;
3189 unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
3190 unsigned long chunk_left_bytes;
3191 unsigned long src_addr;
3192 unsigned long flags;
3193 u32 buff_offset;
3194
3195 spin_lock_irqsave(&instance->crashdump_lock, flags);
3196 buff_offset = instance->fw_crash_buffer_offset;
3197 if (!instance->crash_dump_buf &&
3198 !((instance->fw_crash_state == AVAILABLE) ||
3199 (instance->fw_crash_state == COPYING))) {
3200 dev_err(&instance->pdev->dev,
3201 "Firmware crash dump is not available\n");
3202 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3203 return -EINVAL;
3204 }
3205
3206 if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) {
3207 dev_err(&instance->pdev->dev,
3208 "Firmware crash dump offset is out of range\n");
3209 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3210 return 0;
3211 }
3212
3213 size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
3214 chunk_left_bytes = dmachunk - (buff_offset % dmachunk);
3215 size = (size > chunk_left_bytes) ? chunk_left_bytes : size;
3216 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
3217
3218 src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
3219 (buff_offset % dmachunk);
3220 memcpy(buf, (void *)src_addr, size);
3221 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3222
3223 return size;
3224 }
3225
3226 static ssize_t
3227 fw_crash_buffer_size_show(struct device *cdev,
3228 struct device_attribute *attr, char *buf)
3229 {
3230 struct Scsi_Host *shost = class_to_shost(cdev);
3231 struct megasas_instance *instance =
3232 (struct megasas_instance *) shost->hostdata;
3233
3234 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
3235 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
3236 }
3237
3238 static ssize_t
3239 fw_crash_state_store(struct device *cdev,
3240 struct device_attribute *attr, const char *buf, size_t count)
3241 {
3242 struct Scsi_Host *shost = class_to_shost(cdev);
3243 struct megasas_instance *instance =
3244 (struct megasas_instance *) shost->hostdata;
3245 int val = 0;
3246 unsigned long flags;
3247
3248 if (kstrtoint(buf, 0, &val) != 0)
3249 return -EINVAL;
3250
3251 if ((val <= AVAILABLE || val > COPY_ERROR)) {
3252 dev_err(&instance->pdev->dev, "application updates invalid "
3253 "firmware crash state\n");
3254 return -EINVAL;
3255 }
3256
3257 instance->fw_crash_state = val;
3258
3259 if ((val == COPIED) || (val == COPY_ERROR)) {
3260 spin_lock_irqsave(&instance->crashdump_lock, flags);
3261 megasas_free_host_crash_buffer(instance);
3262 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3263 if (val == COPY_ERROR)
3264 dev_info(&instance->pdev->dev, "application failed to "
3265 "copy Firmware crash dump\n");
3266 else
3267 dev_info(&instance->pdev->dev, "Firmware crash dump "
3268 "copied successfully\n");
3269 }
3270 return strlen(buf);
3271 }
3272
3273 static ssize_t
3274 fw_crash_state_show(struct device *cdev,
3275 struct device_attribute *attr, char *buf)
3276 {
3277 struct Scsi_Host *shost = class_to_shost(cdev);
3278 struct megasas_instance *instance =
3279 (struct megasas_instance *) shost->hostdata;
3280
3281 return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
3282 }
3283
3284 static ssize_t
3285 page_size_show(struct device *cdev,
3286 struct device_attribute *attr, char *buf)
3287 {
3288 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
3289 }
3290
3291 static ssize_t
3292 ldio_outstanding_show(struct device *cdev, struct device_attribute *attr,
3293 char *buf)
3294 {
3295 struct Scsi_Host *shost = class_to_shost(cdev);
3296 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3297
3298 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding));
3299 }
3300
3301 static ssize_t
3302 fw_cmds_outstanding_show(struct device *cdev,
3303 struct device_attribute *attr, char *buf)
3304 {
3305 struct Scsi_Host *shost = class_to_shost(cdev);
3306 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3307
3308 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->fw_outstanding));
3309 }
3310
3311 static ssize_t
3312 enable_sdev_max_qd_show(struct device *cdev,
3313 struct device_attribute *attr, char *buf)
3314 {
3315 struct Scsi_Host *shost = class_to_shost(cdev);
3316 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3317
3318 return snprintf(buf, PAGE_SIZE, "%d\n", instance->enable_sdev_max_qd);
3319 }
3320
3321 static ssize_t
3322 enable_sdev_max_qd_store(struct device *cdev,
3323 struct device_attribute *attr, const char *buf, size_t count)
3324 {
3325 struct Scsi_Host *shost = class_to_shost(cdev);
3326 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3327 u32 val = 0;
3328 bool is_target_prop;
3329 int ret_target_prop = DCMD_FAILED;
3330 struct scsi_device *sdev;
3331
3332 if (kstrtou32(buf, 0, &val) != 0) {
3333 pr_err("megasas: could not set enable_sdev_max_qd\n");
3334 return -EINVAL;
3335 }
3336
3337 mutex_lock(&instance->reset_mutex);
3338 if (val)
3339 instance->enable_sdev_max_qd = true;
3340 else
3341 instance->enable_sdev_max_qd = false;
3342
3343 shost_for_each_device(sdev, shost) {
3344 ret_target_prop = megasas_get_target_prop(instance, sdev);
3345 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
3346 megasas_set_fw_assisted_qd(sdev, is_target_prop);
3347 }
3348 mutex_unlock(&instance->reset_mutex);
3349
3350 return strlen(buf);
3351 }
3352
3353 static ssize_t
3354 dump_system_regs_show(struct device *cdev,
3355 struct device_attribute *attr, char *buf)
3356 {
3357 struct Scsi_Host *shost = class_to_shost(cdev);
3358 struct megasas_instance *instance =
3359 (struct megasas_instance *)shost->hostdata;
3360
3361 return megasas_dump_sys_regs(instance->reg_set, buf);
3362 }
3363
3364 static ssize_t
3365 raid_map_id_show(struct device *cdev, struct device_attribute *attr,
3366 char *buf)
3367 {
3368 struct Scsi_Host *shost = class_to_shost(cdev);
3369 struct megasas_instance *instance =
3370 (struct megasas_instance *)shost->hostdata;
3371
3372 return snprintf(buf, PAGE_SIZE, "%ld\n",
3373 (unsigned long)instance->map_id);
3374 }
3375
3376 static DEVICE_ATTR_RW(fw_crash_buffer);
3377 static DEVICE_ATTR_RO(fw_crash_buffer_size);
3378 static DEVICE_ATTR_RW(fw_crash_state);
3379 static DEVICE_ATTR_RO(page_size);
3380 static DEVICE_ATTR_RO(ldio_outstanding);
3381 static DEVICE_ATTR_RO(fw_cmds_outstanding);
3382 static DEVICE_ATTR_RW(enable_sdev_max_qd);
3383 static DEVICE_ATTR_RO(dump_system_regs);
3384 static DEVICE_ATTR_RO(raid_map_id);
3385
3386 static struct device_attribute *megaraid_host_attrs[] = {
3387 &dev_attr_fw_crash_buffer_size,
3388 &dev_attr_fw_crash_buffer,
3389 &dev_attr_fw_crash_state,
3390 &dev_attr_page_size,
3391 &dev_attr_ldio_outstanding,
3392 &dev_attr_fw_cmds_outstanding,
3393 &dev_attr_enable_sdev_max_qd,
3394 &dev_attr_dump_system_regs,
3395 &dev_attr_raid_map_id,
3396 NULL,
3397 };
3398
3399 /*
3400 * Scsi host template for megaraid_sas driver
3401 */
3402 static struct scsi_host_template megasas_template = {
3403
3404 .module = THIS_MODULE,
3405 .name = "Avago SAS based MegaRAID driver",
3406 .proc_name = "megaraid_sas",
3407 .slave_configure = megasas_slave_configure,
3408 .slave_alloc = megasas_slave_alloc,
3409 .slave_destroy = megasas_slave_destroy,
3410 .queuecommand = megasas_queue_command,
3411 .eh_target_reset_handler = megasas_reset_target,
3412 .eh_abort_handler = megasas_task_abort,
3413 .eh_host_reset_handler = megasas_reset_bus_host,
3414 .eh_timed_out = megasas_reset_timer,
3415 .shost_attrs = megaraid_host_attrs,
3416 .bios_param = megasas_bios_param,
3417 .change_queue_depth = scsi_change_queue_depth,
3418 .max_segment_size = 0xffffffff,
3419 .no_write_same = 1,
3420 };
3421
3422 /**
3423 * megasas_complete_int_cmd - Completes an internal command
3424 * @instance: Adapter soft state
3425 * @cmd: Command to be completed
3426 *
3427 * The megasas_issue_blocked_cmd() function waits for a command to complete
3428 * after it issues a command. This function wakes up that waiting routine by
3429 * calling wake_up() on the wait queue.
3430 */
3431 static void
3432 megasas_complete_int_cmd(struct megasas_instance *instance,
3433 struct megasas_cmd *cmd)
3434 {
3435 cmd->cmd_status_drv = cmd->frame->io.cmd_status;
3436 wake_up(&instance->int_cmd_wait_q);
3437 }
3438
3439 /**
3440 * megasas_complete_abort - Completes aborting a command
3441 * @instance: Adapter soft state
3442 * @cmd: Cmd that was issued to abort another cmd
3443 *
3444 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
3445 * after it issues an abort on a previously issued command. This function
3446 * wakes up all functions waiting on the same wait queue.
3447 */
3448 static void
3449 megasas_complete_abort(struct megasas_instance *instance,
3450 struct megasas_cmd *cmd)
3451 {
3452 if (cmd->sync_cmd) {
3453 cmd->sync_cmd = 0;
3454 cmd->cmd_status_drv = 0;
3455 wake_up(&instance->abort_cmd_wait_q);
3456 }
3457 }
3458
3459 /**
3460 * megasas_complete_cmd - Completes a command
3461 * @instance: Adapter soft state
3462 * @cmd: Command to be completed
3463 * @alt_status: If non-zero, use this value as status to
3464 * SCSI mid-layer instead of the value returned
3465 * by the FW. This should be used if caller wants
3466 * an alternate status (as in the case of aborted
3467 * commands)
3468 */
3469 void
3470 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
3471 u8 alt_status)
3472 {
3473 int exception = 0;
3474 struct megasas_header *hdr = &cmd->frame->hdr;
3475 unsigned long flags;
3476 struct fusion_context *fusion = instance->ctrl_context;
3477 u32 opcode, status;
3478
3479 /* flag for the retry reset */
3480 cmd->retry_for_fw_reset = 0;
3481
3482 if (cmd->scmd)
3483 cmd->scmd->SCp.ptr = NULL;
3484
3485 switch (hdr->cmd) {
3486 case MFI_CMD_INVALID:
3487 /* Some older 1068 controller FW may keep a pended
3488 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
3489 when booting the kdump kernel. Ignore this command to
3490 prevent a kernel panic on shutdown of the kdump kernel. */
3491 dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command "
3492 "completed\n");
3493 dev_warn(&instance->pdev->dev, "If you have a controller "
3494 "other than PERC5, please upgrade your firmware\n");
3495 break;
3496 case MFI_CMD_PD_SCSI_IO:
3497 case MFI_CMD_LD_SCSI_IO:
3498
3499 /*
3500 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
3501 * issued either through an IO path or an IOCTL path. If it
3502 * was via IOCTL, we will send it to internal completion.
3503 */
3504 if (cmd->sync_cmd) {
3505 cmd->sync_cmd = 0;
3506 megasas_complete_int_cmd(instance, cmd);
3507 break;
3508 }
3509 /* fall through */
3510
3511 case MFI_CMD_LD_READ:
3512 case MFI_CMD_LD_WRITE:
3513
3514 if (alt_status) {
3515 cmd->scmd->result = alt_status << 16;
3516 exception = 1;
3517 }
3518
3519 if (exception) {
3520
3521 atomic_dec(&instance->fw_outstanding);
3522
3523 scsi_dma_unmap(cmd->scmd);
3524 cmd->scmd->scsi_done(cmd->scmd);
3525 megasas_return_cmd(instance, cmd);
3526
3527 break;
3528 }
3529
3530 switch (hdr->cmd_status) {
3531
3532 case MFI_STAT_OK:
3533 cmd->scmd->result = DID_OK << 16;
3534 break;
3535
3536 case MFI_STAT_SCSI_IO_FAILED:
3537 case MFI_STAT_LD_INIT_IN_PROGRESS:
3538 cmd->scmd->result =
3539 (DID_ERROR << 16) | hdr->scsi_status;
3540 break;
3541
3542 case MFI_STAT_SCSI_DONE_WITH_ERROR:
3543
3544 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
3545
3546 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
3547 memset(cmd->scmd->sense_buffer, 0,
3548 SCSI_SENSE_BUFFERSIZE);
3549 memcpy(cmd->scmd->sense_buffer, cmd->sense,
3550 hdr->sense_len);
3551
3552 cmd->scmd->result |= DRIVER_SENSE << 24;
3553 }
3554
3555 break;
3556
3557 case MFI_STAT_LD_OFFLINE:
3558 case MFI_STAT_DEVICE_NOT_FOUND:
3559 cmd->scmd->result = DID_BAD_TARGET << 16;
3560 break;
3561
3562 default:
3563 dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n",
3564 hdr->cmd_status);
3565 cmd->scmd->result = DID_ERROR << 16;
3566 break;
3567 }
3568
3569 atomic_dec(&instance->fw_outstanding);
3570
3571 scsi_dma_unmap(cmd->scmd);
3572 cmd->scmd->scsi_done(cmd->scmd);
3573 megasas_return_cmd(instance, cmd);
3574
3575 break;
3576
3577 case MFI_CMD_SMP:
3578 case MFI_CMD_STP:
3579 case MFI_CMD_NVME:
3580 case MFI_CMD_TOOLBOX:
3581 megasas_complete_int_cmd(instance, cmd);
3582 break;
3583
3584 case MFI_CMD_DCMD:
3585 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
3586 /* Check for LD map update */
3587 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
3588 && (cmd->frame->dcmd.mbox.b[1] == 1)) {
3589 fusion->fast_path_io = 0;
3590 spin_lock_irqsave(instance->host->host_lock, flags);
3591 status = cmd->frame->hdr.cmd_status;
3592 instance->map_update_cmd = NULL;
3593 if (status != MFI_STAT_OK) {
3594 if (status != MFI_STAT_NOT_FOUND)
3595 dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n",
3596 cmd->frame->hdr.cmd_status);
3597 else {
3598 megasas_return_cmd(instance, cmd);
3599 spin_unlock_irqrestore(
3600 instance->host->host_lock,
3601 flags);
3602 break;
3603 }
3604 }
3605
3606 megasas_return_cmd(instance, cmd);
3607
3608 /*
3609 * Set fast path IO to ZERO.
3610 * Validate Map will set proper value.
3611 * Meanwhile all IOs will go as LD IO.
3612 */
3613 if (status == MFI_STAT_OK &&
3614 (MR_ValidateMapInfo(instance, (instance->map_id + 1)))) {
3615 instance->map_id++;
3616 fusion->fast_path_io = 1;
3617 } else {
3618 fusion->fast_path_io = 0;
3619 }
3620
3621 megasas_sync_map_info(instance);
3622 spin_unlock_irqrestore(instance->host->host_lock,
3623 flags);
3624 break;
3625 }
3626 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
3627 opcode == MR_DCMD_CTRL_EVENT_GET) {
3628 spin_lock_irqsave(&poll_aen_lock, flags);
3629 megasas_poll_wait_aen = 0;
3630 spin_unlock_irqrestore(&poll_aen_lock, flags);
3631 }
3632
3633 /* FW has an updated PD sequence */
3634 if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
3635 (cmd->frame->dcmd.mbox.b[0] == 1)) {
3636
3637 spin_lock_irqsave(instance->host->host_lock, flags);
3638 status = cmd->frame->hdr.cmd_status;
3639 instance->jbod_seq_cmd = NULL;
3640 megasas_return_cmd(instance, cmd);
3641
3642 if (status == MFI_STAT_OK) {
3643 instance->pd_seq_map_id++;
3644 /* Re-register a pd sync seq num cmd */
3645 if (megasas_sync_pd_seq_num(instance, true))
3646 instance->use_seqnum_jbod_fp = false;
3647 } else
3648 instance->use_seqnum_jbod_fp = false;
3649
3650 spin_unlock_irqrestore(instance->host->host_lock, flags);
3651 break;
3652 }
3653
3654 /*
3655 * See if got an event notification
3656 */
3657 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
3658 megasas_service_aen(instance, cmd);
3659 else
3660 megasas_complete_int_cmd(instance, cmd);
3661
3662 break;
3663
3664 case MFI_CMD_ABORT:
3665 /*
3666 * Cmd issued to abort another cmd returned
3667 */
3668 megasas_complete_abort(instance, cmd);
3669 break;
3670
3671 default:
3672 dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n",
3673 hdr->cmd);
3674 megasas_complete_int_cmd(instance, cmd);
3675 break;
3676 }
3677 }
3678
3679 /**
3680 * megasas_issue_pending_cmds_again - issue all pending cmds
3681 * in FW again because of the fw reset
3682 * @instance: Adapter soft state
3683 */
3684 static inline void
3685 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
3686 {
3687 struct megasas_cmd *cmd;
3688 struct list_head clist_local;
3689 union megasas_evt_class_locale class_locale;
3690 unsigned long flags;
3691 u32 seq_num;
3692
3693 INIT_LIST_HEAD(&clist_local);
3694 spin_lock_irqsave(&instance->hba_lock, flags);
3695 list_splice_init(&instance->internal_reset_pending_q, &clist_local);
3696 spin_unlock_irqrestore(&instance->hba_lock, flags);
3697
3698 while (!list_empty(&clist_local)) {
3699 cmd = list_entry((&clist_local)->next,
3700 struct megasas_cmd, list);
3701 list_del_init(&cmd->list);
3702
3703 if (cmd->sync_cmd || cmd->scmd) {
3704 dev_notice(&instance->pdev->dev, "command %p, %p:%d"
3705 "detected to be pending while HBA reset\n",
3706 cmd, cmd->scmd, cmd->sync_cmd);
3707
3708 cmd->retry_for_fw_reset++;
3709
3710 if (cmd->retry_for_fw_reset == 3) {
3711 dev_notice(&instance->pdev->dev, "cmd %p, %p:%d"
3712 "was tried multiple times during reset."
3713 "Shutting down the HBA\n",
3714 cmd, cmd->scmd, cmd->sync_cmd);
3715 instance->instancet->disable_intr(instance);
3716 atomic_set(&instance->fw_reset_no_pci_access, 1);
3717 megaraid_sas_kill_hba(instance);
3718 return;
3719 }
3720 }
3721
3722 if (cmd->sync_cmd == 1) {
3723 if (cmd->scmd) {
3724 dev_notice(&instance->pdev->dev, "unexpected"
3725 "cmd attached to internal command!\n");
3726 }
3727 dev_notice(&instance->pdev->dev, "%p synchronous cmd"
3728 "on the internal reset queue,"
3729 "issue it again.\n", cmd);
3730 cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
3731 instance->instancet->fire_cmd(instance,
3732 cmd->frame_phys_addr,
3733 0, instance->reg_set);
3734 } else if (cmd->scmd) {
3735 dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]"
3736 "detected on the internal queue, issue again.\n",
3737 cmd, cmd->scmd->cmnd[0]);
3738
3739 atomic_inc(&instance->fw_outstanding);
3740 instance->instancet->fire_cmd(instance,
3741 cmd->frame_phys_addr,
3742 cmd->frame_count-1, instance->reg_set);
3743 } else {
3744 dev_notice(&instance->pdev->dev, "%p unexpected cmd on the"
3745 "internal reset defer list while re-issue!!\n",
3746 cmd);
3747 }
3748 }
3749
3750 if (instance->aen_cmd) {
3751 dev_notice(&instance->pdev->dev, "aen_cmd in def process\n");
3752 megasas_return_cmd(instance, instance->aen_cmd);
3753
3754 instance->aen_cmd = NULL;
3755 }
3756
3757 /*
3758 * Initiate AEN (Asynchronous Event Notification)
3759 */
3760 seq_num = instance->last_seq_num;
3761 class_locale.members.reserved = 0;
3762 class_locale.members.locale = MR_EVT_LOCALE_ALL;
3763 class_locale.members.class = MR_EVT_CLASS_DEBUG;
3764
3765 megasas_register_aen(instance, seq_num, class_locale.word);
3766 }
3767
3768 /**
3769 * Move the internal reset pending commands to a deferred queue.
3770 *
3771 * We move the commands pending at internal reset time to a
3772 * pending queue. This queue would be flushed after successful
3773 * completion of the internal reset sequence. if the internal reset
3774 * did not complete in time, the kernel reset handler would flush
3775 * these commands.
3776 **/
3777 static void
3778 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
3779 {
3780 struct megasas_cmd *cmd;
3781 int i;
3782 u16 max_cmd = instance->max_fw_cmds;
3783 u32 defer_index;
3784 unsigned long flags;
3785
3786 defer_index = 0;
3787 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
3788 for (i = 0; i < max_cmd; i++) {
3789 cmd = instance->cmd_list[i];
3790 if (cmd->sync_cmd == 1 || cmd->scmd) {
3791 dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p"
3792 "on the defer queue as internal\n",
3793 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
3794
3795 if (!list_empty(&cmd->list)) {
3796 dev_notice(&instance->pdev->dev, "ERROR while"
3797 " moving this cmd:%p, %d %p, it was"
3798 "discovered on some list?\n",
3799 cmd, cmd->sync_cmd, cmd->scmd);
3800
3801 list_del_init(&cmd->list);
3802 }
3803 defer_index++;
3804 list_add_tail(&cmd->list,
3805 &instance->internal_reset_pending_q);
3806 }
3807 }
3808 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
3809 }
3810
3811
3812 static void
3813 process_fw_state_change_wq(struct work_struct *work)
3814 {
3815 struct megasas_instance *instance =
3816 container_of(work, struct megasas_instance, work_init);
3817 u32 wait;
3818 unsigned long flags;
3819
3820 if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) {
3821 dev_notice(&instance->pdev->dev, "error, recovery st %x\n",
3822 atomic_read(&instance->adprecovery));
3823 return ;
3824 }
3825
3826 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
3827 dev_notice(&instance->pdev->dev, "FW detected to be in fault"
3828 "state, restarting it...\n");
3829
3830 instance->instancet->disable_intr(instance);
3831 atomic_set(&instance->fw_outstanding, 0);
3832
3833 atomic_set(&instance->fw_reset_no_pci_access, 1);
3834 instance->instancet->adp_reset(instance, instance->reg_set);
3835 atomic_set(&instance->fw_reset_no_pci_access, 0);
3836
3837 dev_notice(&instance->pdev->dev, "FW restarted successfully,"
3838 "initiating next stage...\n");
3839
3840 dev_notice(&instance->pdev->dev, "HBA recovery state machine,"
3841 "state 2 starting...\n");
3842
3843 /* waiting for about 20 second before start the second init */
3844 for (wait = 0; wait < 30; wait++) {
3845 msleep(1000);
3846 }
3847
3848 if (megasas_transition_to_ready(instance, 1)) {
3849 dev_notice(&instance->pdev->dev, "adapter not ready\n");
3850
3851 atomic_set(&instance->fw_reset_no_pci_access, 1);
3852 megaraid_sas_kill_hba(instance);
3853 return ;
3854 }
3855
3856 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
3857 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
3858 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
3859 ) {
3860 *instance->consumer = *instance->producer;
3861 } else {
3862 *instance->consumer = 0;
3863 *instance->producer = 0;
3864 }
3865
3866 megasas_issue_init_mfi(instance);
3867
3868 spin_lock_irqsave(&instance->hba_lock, flags);
3869 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
3870 spin_unlock_irqrestore(&instance->hba_lock, flags);
3871 instance->instancet->enable_intr(instance);
3872
3873 megasas_issue_pending_cmds_again(instance);
3874 instance->issuepend_done = 1;
3875 }
3876 }
3877
3878 /**
3879 * megasas_deplete_reply_queue - Processes all completed commands
3880 * @instance: Adapter soft state
3881 * @alt_status: Alternate status to be returned to
3882 * SCSI mid-layer instead of the status
3883 * returned by the FW
3884 * Note: this must be called with hba lock held
3885 */
3886 static int
3887 megasas_deplete_reply_queue(struct megasas_instance *instance,
3888 u8 alt_status)
3889 {
3890 u32 mfiStatus;
3891 u32 fw_state;
3892
3893 if ((mfiStatus = instance->instancet->check_reset(instance,
3894 instance->reg_set)) == 1) {
3895 return IRQ_HANDLED;
3896 }
3897
3898 mfiStatus = instance->instancet->clear_intr(instance);
3899 if (mfiStatus == 0) {
3900 /* Hardware may not set outbound_intr_status in MSI-X mode */
3901 if (!instance->msix_vectors)
3902 return IRQ_NONE;
3903 }
3904
3905 instance->mfiStatus = mfiStatus;
3906
3907 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
3908 fw_state = instance->instancet->read_fw_status_reg(
3909 instance) & MFI_STATE_MASK;
3910
3911 if (fw_state != MFI_STATE_FAULT) {
3912 dev_notice(&instance->pdev->dev, "fw state:%x\n",
3913 fw_state);
3914 }
3915
3916 if ((fw_state == MFI_STATE_FAULT) &&
3917 (instance->disableOnlineCtrlReset == 0)) {
3918 dev_notice(&instance->pdev->dev, "wait adp restart\n");
3919
3920 if ((instance->pdev->device ==
3921 PCI_DEVICE_ID_LSI_SAS1064R) ||
3922 (instance->pdev->device ==
3923 PCI_DEVICE_ID_DELL_PERC5) ||
3924 (instance->pdev->device ==
3925 PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
3926
3927 *instance->consumer =
3928 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
3929 }
3930
3931
3932 instance->instancet->disable_intr(instance);
3933 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
3934 instance->issuepend_done = 0;
3935
3936 atomic_set(&instance->fw_outstanding, 0);
3937 megasas_internal_reset_defer_cmds(instance);
3938
3939 dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n",
3940 fw_state, atomic_read(&instance->adprecovery));
3941
3942 schedule_work(&instance->work_init);
3943 return IRQ_HANDLED;
3944
3945 } else {
3946 dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n",
3947 fw_state, instance->disableOnlineCtrlReset);
3948 }
3949 }
3950
3951 tasklet_schedule(&instance->isr_tasklet);
3952 return IRQ_HANDLED;
3953 }
3954 /**
3955 * megasas_isr - isr entry point
3956 */
3957 static irqreturn_t megasas_isr(int irq, void *devp)
3958 {
3959 struct megasas_irq_context *irq_context = devp;
3960 struct megasas_instance *instance = irq_context->instance;
3961 unsigned long flags;
3962 irqreturn_t rc;
3963
3964 if (atomic_read(&instance->fw_reset_no_pci_access))
3965 return IRQ_HANDLED;
3966
3967 spin_lock_irqsave(&instance->hba_lock, flags);
3968 rc = megasas_deplete_reply_queue(instance, DID_OK);
3969 spin_unlock_irqrestore(&instance->hba_lock, flags);
3970
3971 return rc;
3972 }
3973
3974 /**
3975 * megasas_transition_to_ready - Move the FW to READY state
3976 * @instance: Adapter soft state
3977 *
3978 * During the initialization, FW passes can potentially be in any one of
3979 * several possible states. If the FW in operational, waiting-for-handshake
3980 * states, driver must take steps to bring it to ready state. Otherwise, it
3981 * has to wait for the ready state.
3982 */
3983 int
3984 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
3985 {
3986 int i;
3987 u8 max_wait;
3988 u32 fw_state;
3989 u32 abs_state, curr_abs_state;
3990
3991 abs_state = instance->instancet->read_fw_status_reg(instance);
3992 fw_state = abs_state & MFI_STATE_MASK;
3993
3994 if (fw_state != MFI_STATE_READY)
3995 dev_info(&instance->pdev->dev, "Waiting for FW to come to ready"
3996 " state\n");
3997
3998 while (fw_state != MFI_STATE_READY) {
3999
4000 switch (fw_state) {
4001
4002 case MFI_STATE_FAULT:
4003 dev_printk(KERN_ERR, &instance->pdev->dev,
4004 "FW in FAULT state, Fault code:0x%x subcode:0x%x func:%s\n",
4005 abs_state & MFI_STATE_FAULT_CODE,
4006 abs_state & MFI_STATE_FAULT_SUBCODE, __func__);
4007 if (ocr) {
4008 max_wait = MEGASAS_RESET_WAIT_TIME;
4009 break;
4010 } else {
4011 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4012 megasas_dump_reg_set(instance->reg_set);
4013 return -ENODEV;
4014 }
4015
4016 case MFI_STATE_WAIT_HANDSHAKE:
4017 /*
4018 * Set the CLR bit in inbound doorbell
4019 */
4020 if ((instance->pdev->device ==
4021 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4022 (instance->pdev->device ==
4023 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4024 (instance->adapter_type != MFI_SERIES))
4025 writel(
4026 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4027 &instance->reg_set->doorbell);
4028 else
4029 writel(
4030 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4031 &instance->reg_set->inbound_doorbell);
4032
4033 max_wait = MEGASAS_RESET_WAIT_TIME;
4034 break;
4035
4036 case MFI_STATE_BOOT_MESSAGE_PENDING:
4037 if ((instance->pdev->device ==
4038 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4039 (instance->pdev->device ==
4040 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4041 (instance->adapter_type != MFI_SERIES))
4042 writel(MFI_INIT_HOTPLUG,
4043 &instance->reg_set->doorbell);
4044 else
4045 writel(MFI_INIT_HOTPLUG,
4046 &instance->reg_set->inbound_doorbell);
4047
4048 max_wait = MEGASAS_RESET_WAIT_TIME;
4049 break;
4050
4051 case MFI_STATE_OPERATIONAL:
4052 /*
4053 * Bring it to READY state; assuming max wait 10 secs
4054 */
4055 instance->instancet->disable_intr(instance);
4056 if ((instance->pdev->device ==
4057 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4058 (instance->pdev->device ==
4059 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4060 (instance->adapter_type != MFI_SERIES)) {
4061 writel(MFI_RESET_FLAGS,
4062 &instance->reg_set->doorbell);
4063
4064 if (instance->adapter_type != MFI_SERIES) {
4065 for (i = 0; i < (10 * 1000); i += 20) {
4066 if (megasas_readl(
4067 instance,
4068 &instance->
4069 reg_set->
4070 doorbell) & 1)
4071 msleep(20);
4072 else
4073 break;
4074 }
4075 }
4076 } else
4077 writel(MFI_RESET_FLAGS,
4078 &instance->reg_set->inbound_doorbell);
4079
4080 max_wait = MEGASAS_RESET_WAIT_TIME;
4081 break;
4082
4083 case MFI_STATE_UNDEFINED:
4084 /*
4085 * This state should not last for more than 2 seconds
4086 */
4087 max_wait = MEGASAS_RESET_WAIT_TIME;
4088 break;
4089
4090 case MFI_STATE_BB_INIT:
4091 max_wait = MEGASAS_RESET_WAIT_TIME;
4092 break;
4093
4094 case MFI_STATE_FW_INIT:
4095 max_wait = MEGASAS_RESET_WAIT_TIME;
4096 break;
4097
4098 case MFI_STATE_FW_INIT_2:
4099 max_wait = MEGASAS_RESET_WAIT_TIME;
4100 break;
4101
4102 case MFI_STATE_DEVICE_SCAN:
4103 max_wait = MEGASAS_RESET_WAIT_TIME;
4104 break;
4105
4106 case MFI_STATE_FLUSH_CACHE:
4107 max_wait = MEGASAS_RESET_WAIT_TIME;
4108 break;
4109
4110 default:
4111 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n",
4112 fw_state);
4113 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4114 megasas_dump_reg_set(instance->reg_set);
4115 return -ENODEV;
4116 }
4117
4118 /*
4119 * The cur_state should not last for more than max_wait secs
4120 */
4121 for (i = 0; i < max_wait * 50; i++) {
4122 curr_abs_state = instance->instancet->
4123 read_fw_status_reg(instance);
4124
4125 if (abs_state == curr_abs_state) {
4126 msleep(20);
4127 } else
4128 break;
4129 }
4130
4131 /*
4132 * Return error if fw_state hasn't changed after max_wait
4133 */
4134 if (curr_abs_state == abs_state) {
4135 dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed "
4136 "in %d secs\n", fw_state, max_wait);
4137 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4138 megasas_dump_reg_set(instance->reg_set);
4139 return -ENODEV;
4140 }
4141
4142 abs_state = curr_abs_state;
4143 fw_state = curr_abs_state & MFI_STATE_MASK;
4144 }
4145 dev_info(&instance->pdev->dev, "FW now in Ready state\n");
4146
4147 return 0;
4148 }
4149
4150 /**
4151 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
4152 * @instance: Adapter soft state
4153 */
4154 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
4155 {
4156 int i;
4157 u16 max_cmd = instance->max_mfi_cmds;
4158 struct megasas_cmd *cmd;
4159
4160 if (!instance->frame_dma_pool)
4161 return;
4162
4163 /*
4164 * Return all frames to pool
4165 */
4166 for (i = 0; i < max_cmd; i++) {
4167
4168 cmd = instance->cmd_list[i];
4169
4170 if (cmd->frame)
4171 dma_pool_free(instance->frame_dma_pool, cmd->frame,
4172 cmd->frame_phys_addr);
4173
4174 if (cmd->sense)
4175 dma_pool_free(instance->sense_dma_pool, cmd->sense,
4176 cmd->sense_phys_addr);
4177 }
4178
4179 /*
4180 * Now destroy the pool itself
4181 */
4182 dma_pool_destroy(instance->frame_dma_pool);
4183 dma_pool_destroy(instance->sense_dma_pool);
4184
4185 instance->frame_dma_pool = NULL;
4186 instance->sense_dma_pool = NULL;
4187 }
4188
4189 /**
4190 * megasas_create_frame_pool - Creates DMA pool for cmd frames
4191 * @instance: Adapter soft state
4192 *
4193 * Each command packet has an embedded DMA memory buffer that is used for
4194 * filling MFI frame and the SG list that immediately follows the frame. This
4195 * function creates those DMA memory buffers for each command packet by using
4196 * PCI pool facility.
4197 */
4198 static int megasas_create_frame_pool(struct megasas_instance *instance)
4199 {
4200 int i;
4201 u16 max_cmd;
4202 u32 frame_count;
4203 struct megasas_cmd *cmd;
4204
4205 max_cmd = instance->max_mfi_cmds;
4206
4207 /*
4208 * For MFI controllers.
4209 * max_num_sge = 60
4210 * max_sge_sz = 16 byte (sizeof megasas_sge_skinny)
4211 * Total 960 byte (15 MFI frame of 64 byte)
4212 *
4213 * Fusion adapter require only 3 extra frame.
4214 * max_num_sge = 16 (defined as MAX_IOCTL_SGE)
4215 * max_sge_sz = 12 byte (sizeof megasas_sge64)
4216 * Total 192 byte (3 MFI frame of 64 byte)
4217 */
4218 frame_count = (instance->adapter_type == MFI_SERIES) ?
4219 (15 + 1) : (3 + 1);
4220 instance->mfi_frame_size = MEGAMFI_FRAME_SIZE * frame_count;
4221 /*
4222 * Use DMA pool facility provided by PCI layer
4223 */
4224 instance->frame_dma_pool = dma_pool_create("megasas frame pool",
4225 &instance->pdev->dev,
4226 instance->mfi_frame_size, 256, 0);
4227
4228 if (!instance->frame_dma_pool) {
4229 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n");
4230 return -ENOMEM;
4231 }
4232
4233 instance->sense_dma_pool = dma_pool_create("megasas sense pool",
4234 &instance->pdev->dev, 128,
4235 4, 0);
4236
4237 if (!instance->sense_dma_pool) {
4238 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n");
4239
4240 dma_pool_destroy(instance->frame_dma_pool);
4241 instance->frame_dma_pool = NULL;
4242
4243 return -ENOMEM;
4244 }
4245
4246 /*
4247 * Allocate and attach a frame to each of the commands in cmd_list.
4248 * By making cmd->index as the context instead of the &cmd, we can
4249 * always use 32bit context regardless of the architecture
4250 */
4251 for (i = 0; i < max_cmd; i++) {
4252
4253 cmd = instance->cmd_list[i];
4254
4255 cmd->frame = dma_pool_zalloc(instance->frame_dma_pool,
4256 GFP_KERNEL, &cmd->frame_phys_addr);
4257
4258 cmd->sense = dma_pool_alloc(instance->sense_dma_pool,
4259 GFP_KERNEL, &cmd->sense_phys_addr);
4260
4261 /*
4262 * megasas_teardown_frame_pool() takes care of freeing
4263 * whatever has been allocated
4264 */
4265 if (!cmd->frame || !cmd->sense) {
4266 dev_printk(KERN_DEBUG, &instance->pdev->dev, "dma_pool_alloc failed\n");
4267 megasas_teardown_frame_pool(instance);
4268 return -ENOMEM;
4269 }
4270
4271 cmd->frame->io.context = cpu_to_le32(cmd->index);
4272 cmd->frame->io.pad_0 = 0;
4273 if ((instance->adapter_type == MFI_SERIES) && reset_devices)
4274 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
4275 }
4276
4277 return 0;
4278 }
4279
4280 /**
4281 * megasas_free_cmds - Free all the cmds in the free cmd pool
4282 * @instance: Adapter soft state
4283 */
4284 void megasas_free_cmds(struct megasas_instance *instance)
4285 {
4286 int i;
4287
4288 /* First free the MFI frame pool */
4289 megasas_teardown_frame_pool(instance);
4290
4291 /* Free all the commands in the cmd_list */
4292 for (i = 0; i < instance->max_mfi_cmds; i++)
4293
4294 kfree(instance->cmd_list[i]);
4295
4296 /* Free the cmd_list buffer itself */
4297 kfree(instance->cmd_list);
4298 instance->cmd_list = NULL;
4299
4300 INIT_LIST_HEAD(&instance->cmd_pool);
4301 }
4302
4303 /**
4304 * megasas_alloc_cmds - Allocates the command packets
4305 * @instance: Adapter soft state
4306 *
4307 * Each command that is issued to the FW, whether IO commands from the OS or
4308 * internal commands like IOCTLs, are wrapped in local data structure called
4309 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
4310 * the FW.
4311 *
4312 * Each frame has a 32-bit field called context (tag). This context is used
4313 * to get back the megasas_cmd from the frame when a frame gets completed in
4314 * the ISR. Typically the address of the megasas_cmd itself would be used as
4315 * the context. But we wanted to keep the differences between 32 and 64 bit
4316 * systems to the mininum. We always use 32 bit integers for the context. In
4317 * this driver, the 32 bit values are the indices into an array cmd_list.
4318 * This array is used only to look up the megasas_cmd given the context. The
4319 * free commands themselves are maintained in a linked list called cmd_pool.
4320 */
4321 int megasas_alloc_cmds(struct megasas_instance *instance)
4322 {
4323 int i;
4324 int j;
4325 u16 max_cmd;
4326 struct megasas_cmd *cmd;
4327
4328 max_cmd = instance->max_mfi_cmds;
4329
4330 /*
4331 * instance->cmd_list is an array of struct megasas_cmd pointers.
4332 * Allocate the dynamic array first and then allocate individual
4333 * commands.
4334 */
4335 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
4336
4337 if (!instance->cmd_list) {
4338 dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n");
4339 return -ENOMEM;
4340 }
4341
4342 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
4343
4344 for (i = 0; i < max_cmd; i++) {
4345 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
4346 GFP_KERNEL);
4347
4348 if (!instance->cmd_list[i]) {
4349
4350 for (j = 0; j < i; j++)
4351 kfree(instance->cmd_list[j]);
4352
4353 kfree(instance->cmd_list);
4354 instance->cmd_list = NULL;
4355
4356 return -ENOMEM;
4357 }
4358 }
4359
4360 for (i = 0; i < max_cmd; i++) {
4361 cmd = instance->cmd_list[i];
4362 memset(cmd, 0, sizeof(struct megasas_cmd));
4363 cmd->index = i;
4364 cmd->scmd = NULL;
4365 cmd->instance = instance;
4366
4367 list_add_tail(&cmd->list, &instance->cmd_pool);
4368 }
4369
4370 /*
4371 * Create a frame pool and assign one frame to each cmd
4372 */
4373 if (megasas_create_frame_pool(instance)) {
4374 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n");
4375 megasas_free_cmds(instance);
4376 return -ENOMEM;
4377 }
4378
4379 return 0;
4380 }
4381
4382 /*
4383 * dcmd_timeout_ocr_possible - Check if OCR is possible based on Driver/FW state.
4384 * @instance: Adapter soft state
4385 *
4386 * Return 0 for only Fusion adapter, if driver load/unload is not in progress
4387 * or FW is not under OCR.
4388 */
4389 inline int
4390 dcmd_timeout_ocr_possible(struct megasas_instance *instance) {
4391
4392 if (instance->adapter_type == MFI_SERIES)
4393 return KILL_ADAPTER;
4394 else if (instance->unload ||
4395 test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags))
4396 return IGNORE_TIMEOUT;
4397 else
4398 return INITIATE_OCR;
4399 }
4400
4401 static void
4402 megasas_get_pd_info(struct megasas_instance *instance, struct scsi_device *sdev)
4403 {
4404 int ret;
4405 struct megasas_cmd *cmd;
4406 struct megasas_dcmd_frame *dcmd;
4407
4408 struct MR_PRIV_DEVICE *mr_device_priv_data;
4409 u16 device_id = 0;
4410
4411 device_id = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id;
4412 cmd = megasas_get_cmd(instance);
4413
4414 if (!cmd) {
4415 dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__);
4416 return;
4417 }
4418
4419 dcmd = &cmd->frame->dcmd;
4420
4421 memset(instance->pd_info, 0, sizeof(*instance->pd_info));
4422 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4423
4424 dcmd->mbox.s[0] = cpu_to_le16(device_id);
4425 dcmd->cmd = MFI_CMD_DCMD;
4426 dcmd->cmd_status = 0xFF;
4427 dcmd->sge_count = 1;
4428 dcmd->flags = MFI_FRAME_DIR_READ;
4429 dcmd->timeout = 0;
4430 dcmd->pad_0 = 0;
4431 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO));
4432 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO);
4433
4434 megasas_set_dma_settings(instance, dcmd, instance->pd_info_h,
4435 sizeof(struct MR_PD_INFO));
4436
4437 if ((instance->adapter_type != MFI_SERIES) &&
4438 !instance->mask_interrupts)
4439 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4440 else
4441 ret = megasas_issue_polled(instance, cmd);
4442
4443 switch (ret) {
4444 case DCMD_SUCCESS:
4445 mr_device_priv_data = sdev->hostdata;
4446 le16_to_cpus((u16 *)&instance->pd_info->state.ddf.pdType);
4447 mr_device_priv_data->interface_type =
4448 instance->pd_info->state.ddf.pdType.intf;
4449 break;
4450
4451 case DCMD_TIMEOUT:
4452
4453 switch (dcmd_timeout_ocr_possible(instance)) {
4454 case INITIATE_OCR:
4455 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4456 mutex_unlock(&instance->reset_mutex);
4457 megasas_reset_fusion(instance->host,
4458 MFI_IO_TIMEOUT_OCR);
4459 mutex_lock(&instance->reset_mutex);
4460 break;
4461 case KILL_ADAPTER:
4462 megaraid_sas_kill_hba(instance);
4463 break;
4464 case IGNORE_TIMEOUT:
4465 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4466 __func__, __LINE__);
4467 break;
4468 }
4469
4470 break;
4471 }
4472
4473 if (ret != DCMD_TIMEOUT)
4474 megasas_return_cmd(instance, cmd);
4475
4476 return;
4477 }
4478 /*
4479 * megasas_get_pd_list_info - Returns FW's pd_list structure
4480 * @instance: Adapter soft state
4481 * @pd_list: pd_list structure
4482 *
4483 * Issues an internal command (DCMD) to get the FW's controller PD
4484 * list structure. This information is mainly used to find out SYSTEM
4485 * supported by the FW.
4486 */
4487 static int
4488 megasas_get_pd_list(struct megasas_instance *instance)
4489 {
4490 int ret = 0, pd_index = 0;
4491 struct megasas_cmd *cmd;
4492 struct megasas_dcmd_frame *dcmd;
4493 struct MR_PD_LIST *ci;
4494 struct MR_PD_ADDRESS *pd_addr;
4495
4496 if (instance->pd_list_not_supported) {
4497 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4498 "not supported by firmware\n");
4499 return ret;
4500 }
4501
4502 ci = instance->pd_list_buf;
4503
4504 cmd = megasas_get_cmd(instance);
4505
4506 if (!cmd) {
4507 dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n");
4508 return -ENOMEM;
4509 }
4510
4511 dcmd = &cmd->frame->dcmd;
4512
4513 memset(ci, 0, sizeof(*ci));
4514 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4515
4516 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
4517 dcmd->mbox.b[1] = 0;
4518 dcmd->cmd = MFI_CMD_DCMD;
4519 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4520 dcmd->sge_count = 1;
4521 dcmd->flags = MFI_FRAME_DIR_READ;
4522 dcmd->timeout = 0;
4523 dcmd->pad_0 = 0;
4524 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
4525 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
4526
4527 megasas_set_dma_settings(instance, dcmd, instance->pd_list_buf_h,
4528 (MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)));
4529
4530 if ((instance->adapter_type != MFI_SERIES) &&
4531 !instance->mask_interrupts)
4532 ret = megasas_issue_blocked_cmd(instance, cmd,
4533 MFI_IO_TIMEOUT_SECS);
4534 else
4535 ret = megasas_issue_polled(instance, cmd);
4536
4537 switch (ret) {
4538 case DCMD_FAILED:
4539 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4540 "failed/not supported by firmware\n");
4541
4542 if (instance->adapter_type != MFI_SERIES)
4543 megaraid_sas_kill_hba(instance);
4544 else
4545 instance->pd_list_not_supported = 1;
4546 break;
4547 case DCMD_TIMEOUT:
4548
4549 switch (dcmd_timeout_ocr_possible(instance)) {
4550 case INITIATE_OCR:
4551 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4552 /*
4553 * DCMD failed from AEN path.
4554 * AEN path already hold reset_mutex to avoid PCI access
4555 * while OCR is in progress.
4556 */
4557 mutex_unlock(&instance->reset_mutex);
4558 megasas_reset_fusion(instance->host,
4559 MFI_IO_TIMEOUT_OCR);
4560 mutex_lock(&instance->reset_mutex);
4561 break;
4562 case KILL_ADAPTER:
4563 megaraid_sas_kill_hba(instance);
4564 break;
4565 case IGNORE_TIMEOUT:
4566 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n",
4567 __func__, __LINE__);
4568 break;
4569 }
4570
4571 break;
4572
4573 case DCMD_SUCCESS:
4574 pd_addr = ci->addr;
4575 if (megasas_dbg_lvl & LD_PD_DEBUG)
4576 dev_info(&instance->pdev->dev, "%s, sysPD count: 0x%x\n",
4577 __func__, le32_to_cpu(ci->count));
4578
4579 if ((le32_to_cpu(ci->count) >
4580 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL)))
4581 break;
4582
4583 memset(instance->local_pd_list, 0,
4584 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4585
4586 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
4587 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid =
4588 le16_to_cpu(pd_addr->deviceId);
4589 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType =
4590 pd_addr->scsiDevType;
4591 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState =
4592 MR_PD_STATE_SYSTEM;
4593 if (megasas_dbg_lvl & LD_PD_DEBUG)
4594 dev_info(&instance->pdev->dev,
4595 "PD%d: targetID: 0x%03x deviceType:0x%x\n",
4596 pd_index, le16_to_cpu(pd_addr->deviceId),
4597 pd_addr->scsiDevType);
4598 pd_addr++;
4599 }
4600
4601 memcpy(instance->pd_list, instance->local_pd_list,
4602 sizeof(instance->pd_list));
4603 break;
4604
4605 }
4606
4607 if (ret != DCMD_TIMEOUT)
4608 megasas_return_cmd(instance, cmd);
4609
4610 return ret;
4611 }
4612
4613 /*
4614 * megasas_get_ld_list_info - Returns FW's ld_list structure
4615 * @instance: Adapter soft state
4616 * @ld_list: ld_list structure
4617 *
4618 * Issues an internal command (DCMD) to get the FW's controller PD
4619 * list structure. This information is mainly used to find out SYSTEM
4620 * supported by the FW.
4621 */
4622 static int
4623 megasas_get_ld_list(struct megasas_instance *instance)
4624 {
4625 int ret = 0, ld_index = 0, ids = 0;
4626 struct megasas_cmd *cmd;
4627 struct megasas_dcmd_frame *dcmd;
4628 struct MR_LD_LIST *ci;
4629 dma_addr_t ci_h = 0;
4630 u32 ld_count;
4631
4632 ci = instance->ld_list_buf;
4633 ci_h = instance->ld_list_buf_h;
4634
4635 cmd = megasas_get_cmd(instance);
4636
4637 if (!cmd) {
4638 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n");
4639 return -ENOMEM;
4640 }
4641
4642 dcmd = &cmd->frame->dcmd;
4643
4644 memset(ci, 0, sizeof(*ci));
4645 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4646
4647 if (instance->supportmax256vd)
4648 dcmd->mbox.b[0] = 1;
4649 dcmd->cmd = MFI_CMD_DCMD;
4650 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4651 dcmd->sge_count = 1;
4652 dcmd->flags = MFI_FRAME_DIR_READ;
4653 dcmd->timeout = 0;
4654 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
4655 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
4656 dcmd->pad_0 = 0;
4657
4658 megasas_set_dma_settings(instance, dcmd, ci_h,
4659 sizeof(struct MR_LD_LIST));
4660
4661 if ((instance->adapter_type != MFI_SERIES) &&
4662 !instance->mask_interrupts)
4663 ret = megasas_issue_blocked_cmd(instance, cmd,
4664 MFI_IO_TIMEOUT_SECS);
4665 else
4666 ret = megasas_issue_polled(instance, cmd);
4667
4668 ld_count = le32_to_cpu(ci->ldCount);
4669
4670 switch (ret) {
4671 case DCMD_FAILED:
4672 megaraid_sas_kill_hba(instance);
4673 break;
4674 case DCMD_TIMEOUT:
4675
4676 switch (dcmd_timeout_ocr_possible(instance)) {
4677 case INITIATE_OCR:
4678 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4679 /*
4680 * DCMD failed from AEN path.
4681 * AEN path already hold reset_mutex to avoid PCI access
4682 * while OCR is in progress.
4683 */
4684 mutex_unlock(&instance->reset_mutex);
4685 megasas_reset_fusion(instance->host,
4686 MFI_IO_TIMEOUT_OCR);
4687 mutex_lock(&instance->reset_mutex);
4688 break;
4689 case KILL_ADAPTER:
4690 megaraid_sas_kill_hba(instance);
4691 break;
4692 case IGNORE_TIMEOUT:
4693 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4694 __func__, __LINE__);
4695 break;
4696 }
4697
4698 break;
4699
4700 case DCMD_SUCCESS:
4701 if (megasas_dbg_lvl & LD_PD_DEBUG)
4702 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4703 __func__, ld_count);
4704
4705 if (ld_count > instance->fw_supported_vd_count)
4706 break;
4707
4708 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4709
4710 for (ld_index = 0; ld_index < ld_count; ld_index++) {
4711 if (ci->ldList[ld_index].state != 0) {
4712 ids = ci->ldList[ld_index].ref.targetId;
4713 instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId;
4714 if (megasas_dbg_lvl & LD_PD_DEBUG)
4715 dev_info(&instance->pdev->dev,
4716 "LD%d: targetID: 0x%03x\n",
4717 ld_index, ids);
4718 }
4719 }
4720
4721 break;
4722 }
4723
4724 if (ret != DCMD_TIMEOUT)
4725 megasas_return_cmd(instance, cmd);
4726
4727 return ret;
4728 }
4729
4730 /**
4731 * megasas_ld_list_query - Returns FW's ld_list structure
4732 * @instance: Adapter soft state
4733 * @ld_list: ld_list structure
4734 *
4735 * Issues an internal command (DCMD) to get the FW's controller PD
4736 * list structure. This information is mainly used to find out SYSTEM
4737 * supported by the FW.
4738 */
4739 static int
4740 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
4741 {
4742 int ret = 0, ld_index = 0, ids = 0;
4743 struct megasas_cmd *cmd;
4744 struct megasas_dcmd_frame *dcmd;
4745 struct MR_LD_TARGETID_LIST *ci;
4746 dma_addr_t ci_h = 0;
4747 u32 tgtid_count;
4748
4749 ci = instance->ld_targetid_list_buf;
4750 ci_h = instance->ld_targetid_list_buf_h;
4751
4752 cmd = megasas_get_cmd(instance);
4753
4754 if (!cmd) {
4755 dev_warn(&instance->pdev->dev,
4756 "megasas_ld_list_query: Failed to get cmd\n");
4757 return -ENOMEM;
4758 }
4759
4760 dcmd = &cmd->frame->dcmd;
4761
4762 memset(ci, 0, sizeof(*ci));
4763 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4764
4765 dcmd->mbox.b[0] = query_type;
4766 if (instance->supportmax256vd)
4767 dcmd->mbox.b[2] = 1;
4768
4769 dcmd->cmd = MFI_CMD_DCMD;
4770 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4771 dcmd->sge_count = 1;
4772 dcmd->flags = MFI_FRAME_DIR_READ;
4773 dcmd->timeout = 0;
4774 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4775 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
4776 dcmd->pad_0 = 0;
4777
4778 megasas_set_dma_settings(instance, dcmd, ci_h,
4779 sizeof(struct MR_LD_TARGETID_LIST));
4780
4781 if ((instance->adapter_type != MFI_SERIES) &&
4782 !instance->mask_interrupts)
4783 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4784 else
4785 ret = megasas_issue_polled(instance, cmd);
4786
4787 switch (ret) {
4788 case DCMD_FAILED:
4789 dev_info(&instance->pdev->dev,
4790 "DCMD not supported by firmware - %s %d\n",
4791 __func__, __LINE__);
4792 ret = megasas_get_ld_list(instance);
4793 break;
4794 case DCMD_TIMEOUT:
4795 switch (dcmd_timeout_ocr_possible(instance)) {
4796 case INITIATE_OCR:
4797 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4798 /*
4799 * DCMD failed from AEN path.
4800 * AEN path already hold reset_mutex to avoid PCI access
4801 * while OCR is in progress.
4802 */
4803 mutex_unlock(&instance->reset_mutex);
4804 megasas_reset_fusion(instance->host,
4805 MFI_IO_TIMEOUT_OCR);
4806 mutex_lock(&instance->reset_mutex);
4807 break;
4808 case KILL_ADAPTER:
4809 megaraid_sas_kill_hba(instance);
4810 break;
4811 case IGNORE_TIMEOUT:
4812 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4813 __func__, __LINE__);
4814 break;
4815 }
4816
4817 break;
4818 case DCMD_SUCCESS:
4819 tgtid_count = le32_to_cpu(ci->count);
4820
4821 if (megasas_dbg_lvl & LD_PD_DEBUG)
4822 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4823 __func__, tgtid_count);
4824
4825 if ((tgtid_count > (instance->fw_supported_vd_count)))
4826 break;
4827
4828 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4829 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
4830 ids = ci->targetId[ld_index];
4831 instance->ld_ids[ids] = ci->targetId[ld_index];
4832 if (megasas_dbg_lvl & LD_PD_DEBUG)
4833 dev_info(&instance->pdev->dev, "LD%d: targetID: 0x%03x\n",
4834 ld_index, ci->targetId[ld_index]);
4835 }
4836
4837 break;
4838 }
4839
4840 if (ret != DCMD_TIMEOUT)
4841 megasas_return_cmd(instance, cmd);
4842
4843 return ret;
4844 }
4845
4846 /**
4847 * dcmd.opcode - MR_DCMD_CTRL_DEVICE_LIST_GET
4848 * dcmd.mbox - reserved
4849 * dcmd.sge IN - ptr to return MR_HOST_DEVICE_LIST structure
4850 * Desc: This DCMD will return the combined device list
4851 * Status: MFI_STAT_OK - List returned successfully
4852 * MFI_STAT_INVALID_CMD - Firmware support for the feature has been
4853 * disabled
4854 * @instance: Adapter soft state
4855 * @is_probe: Driver probe check
4856 * Return: 0 if DCMD succeeded
4857 * non-zero if failed
4858 */
4859 static int
4860 megasas_host_device_list_query(struct megasas_instance *instance,
4861 bool is_probe)
4862 {
4863 int ret, i, target_id;
4864 struct megasas_cmd *cmd;
4865 struct megasas_dcmd_frame *dcmd;
4866 struct MR_HOST_DEVICE_LIST *ci;
4867 u32 count;
4868 dma_addr_t ci_h;
4869
4870 ci = instance->host_device_list_buf;
4871 ci_h = instance->host_device_list_buf_h;
4872
4873 cmd = megasas_get_cmd(instance);
4874
4875 if (!cmd) {
4876 dev_warn(&instance->pdev->dev,
4877 "%s: failed to get cmd\n",
4878 __func__);
4879 return -ENOMEM;
4880 }
4881
4882 dcmd = &cmd->frame->dcmd;
4883
4884 memset(ci, 0, sizeof(*ci));
4885 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4886
4887 dcmd->mbox.b[0] = is_probe ? 0 : 1;
4888 dcmd->cmd = MFI_CMD_DCMD;
4889 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4890 dcmd->sge_count = 1;
4891 dcmd->flags = MFI_FRAME_DIR_READ;
4892 dcmd->timeout = 0;
4893 dcmd->pad_0 = 0;
4894 dcmd->data_xfer_len = cpu_to_le32(HOST_DEVICE_LIST_SZ);
4895 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_DEVICE_LIST_GET);
4896
4897 megasas_set_dma_settings(instance, dcmd, ci_h, HOST_DEVICE_LIST_SZ);
4898
4899 if (!instance->mask_interrupts) {
4900 ret = megasas_issue_blocked_cmd(instance, cmd,
4901 MFI_IO_TIMEOUT_SECS);
4902 } else {
4903 ret = megasas_issue_polled(instance, cmd);
4904 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4905 }
4906
4907 switch (ret) {
4908 case DCMD_SUCCESS:
4909 /* Fill the internal pd_list and ld_ids array based on
4910 * targetIds returned by FW
4911 */
4912 count = le32_to_cpu(ci->count);
4913
4914 if (count > (MEGASAS_MAX_PD + MAX_LOGICAL_DRIVES_EXT))
4915 break;
4916
4917 if (megasas_dbg_lvl & LD_PD_DEBUG)
4918 dev_info(&instance->pdev->dev, "%s, Device count: 0x%x\n",
4919 __func__, count);
4920
4921 memset(instance->local_pd_list, 0,
4922 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4923 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4924 for (i = 0; i < count; i++) {
4925 target_id = le16_to_cpu(ci->host_device_list[i].target_id);
4926 if (ci->host_device_list[i].flags.u.bits.is_sys_pd) {
4927 instance->local_pd_list[target_id].tid = target_id;
4928 instance->local_pd_list[target_id].driveType =
4929 ci->host_device_list[i].scsi_type;
4930 instance->local_pd_list[target_id].driveState =
4931 MR_PD_STATE_SYSTEM;
4932 if (megasas_dbg_lvl & LD_PD_DEBUG)
4933 dev_info(&instance->pdev->dev,
4934 "Device %d: PD targetID: 0x%03x deviceType:0x%x\n",
4935 i, target_id, ci->host_device_list[i].scsi_type);
4936 } else {
4937 instance->ld_ids[target_id] = target_id;
4938 if (megasas_dbg_lvl & LD_PD_DEBUG)
4939 dev_info(&instance->pdev->dev,
4940 "Device %d: LD targetID: 0x%03x\n",
4941 i, target_id);
4942 }
4943 }
4944
4945 memcpy(instance->pd_list, instance->local_pd_list,
4946 sizeof(instance->pd_list));
4947 break;
4948
4949 case DCMD_TIMEOUT:
4950 switch (dcmd_timeout_ocr_possible(instance)) {
4951 case INITIATE_OCR:
4952 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4953 mutex_unlock(&instance->reset_mutex);
4954 megasas_reset_fusion(instance->host,
4955 MFI_IO_TIMEOUT_OCR);
4956 mutex_lock(&instance->reset_mutex);
4957 break;
4958 case KILL_ADAPTER:
4959 megaraid_sas_kill_hba(instance);
4960 break;
4961 case IGNORE_TIMEOUT:
4962 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4963 __func__, __LINE__);
4964 break;
4965 }
4966 break;
4967 case DCMD_FAILED:
4968 dev_err(&instance->pdev->dev,
4969 "%s: MR_DCMD_CTRL_DEVICE_LIST_GET failed\n",
4970 __func__);
4971 break;
4972 }
4973
4974 if (ret != DCMD_TIMEOUT)
4975 megasas_return_cmd(instance, cmd);
4976
4977 return ret;
4978 }
4979
4980 /*
4981 * megasas_update_ext_vd_details : Update details w.r.t Extended VD
4982 * instance : Controller's instance
4983 */
4984 static void megasas_update_ext_vd_details(struct megasas_instance *instance)
4985 {
4986 struct fusion_context *fusion;
4987 u32 ventura_map_sz = 0;
4988
4989 fusion = instance->ctrl_context;
4990 /* For MFI based controllers return dummy success */
4991 if (!fusion)
4992 return;
4993
4994 instance->supportmax256vd =
4995 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs;
4996 /* Below is additional check to address future FW enhancement */
4997 if (instance->ctrl_info_buf->max_lds > 64)
4998 instance->supportmax256vd = 1;
4999
5000 instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
5001 * MEGASAS_MAX_DEV_PER_CHANNEL;
5002 instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS
5003 * MEGASAS_MAX_DEV_PER_CHANNEL;
5004 if (instance->supportmax256vd) {
5005 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT;
5006 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5007 } else {
5008 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
5009 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5010 }
5011
5012 dev_info(&instance->pdev->dev,
5013 "FW provided supportMaxExtLDs: %d\tmax_lds: %d\n",
5014 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs ? 1 : 0,
5015 instance->ctrl_info_buf->max_lds);
5016
5017 if (instance->max_raid_mapsize) {
5018 ventura_map_sz = instance->max_raid_mapsize *
5019 MR_MIN_MAP_SIZE; /* 64k */
5020 fusion->current_map_sz = ventura_map_sz;
5021 fusion->max_map_sz = ventura_map_sz;
5022 } else {
5023 fusion->old_map_sz = sizeof(struct MR_FW_RAID_MAP) +
5024 (sizeof(struct MR_LD_SPAN_MAP) *
5025 (instance->fw_supported_vd_count - 1));
5026 fusion->new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT);
5027
5028 fusion->max_map_sz =
5029 max(fusion->old_map_sz, fusion->new_map_sz);
5030
5031 if (instance->supportmax256vd)
5032 fusion->current_map_sz = fusion->new_map_sz;
5033 else
5034 fusion->current_map_sz = fusion->old_map_sz;
5035 }
5036 /* irrespective of FW raid maps, driver raid map is constant */
5037 fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP_ALL);
5038 }
5039
5040 /*
5041 * dcmd.opcode - MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES
5042 * dcmd.hdr.length - number of bytes to read
5043 * dcmd.sge - Ptr to MR_SNAPDUMP_PROPERTIES
5044 * Desc: Fill in snapdump properties
5045 * Status: MFI_STAT_OK- Command successful
5046 */
5047 void megasas_get_snapdump_properties(struct megasas_instance *instance)
5048 {
5049 int ret = 0;
5050 struct megasas_cmd *cmd;
5051 struct megasas_dcmd_frame *dcmd;
5052 struct MR_SNAPDUMP_PROPERTIES *ci;
5053 dma_addr_t ci_h = 0;
5054
5055 ci = instance->snapdump_prop;
5056 ci_h = instance->snapdump_prop_h;
5057
5058 if (!ci)
5059 return;
5060
5061 cmd = megasas_get_cmd(instance);
5062
5063 if (!cmd) {
5064 dev_dbg(&instance->pdev->dev, "Failed to get a free cmd\n");
5065 return;
5066 }
5067
5068 dcmd = &cmd->frame->dcmd;
5069
5070 memset(ci, 0, sizeof(*ci));
5071 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5072
5073 dcmd->cmd = MFI_CMD_DCMD;
5074 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5075 dcmd->sge_count = 1;
5076 dcmd->flags = MFI_FRAME_DIR_READ;
5077 dcmd->timeout = 0;
5078 dcmd->pad_0 = 0;
5079 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_SNAPDUMP_PROPERTIES));
5080 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES);
5081
5082 megasas_set_dma_settings(instance, dcmd, ci_h,
5083 sizeof(struct MR_SNAPDUMP_PROPERTIES));
5084
5085 if (!instance->mask_interrupts) {
5086 ret = megasas_issue_blocked_cmd(instance, cmd,
5087 MFI_IO_TIMEOUT_SECS);
5088 } else {
5089 ret = megasas_issue_polled(instance, cmd);
5090 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5091 }
5092
5093 switch (ret) {
5094 case DCMD_SUCCESS:
5095 instance->snapdump_wait_time =
5096 min_t(u8, ci->trigger_min_num_sec_before_ocr,
5097 MEGASAS_MAX_SNAP_DUMP_WAIT_TIME);
5098 break;
5099
5100 case DCMD_TIMEOUT:
5101 switch (dcmd_timeout_ocr_possible(instance)) {
5102 case INITIATE_OCR:
5103 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5104 mutex_unlock(&instance->reset_mutex);
5105 megasas_reset_fusion(instance->host,
5106 MFI_IO_TIMEOUT_OCR);
5107 mutex_lock(&instance->reset_mutex);
5108 break;
5109 case KILL_ADAPTER:
5110 megaraid_sas_kill_hba(instance);
5111 break;
5112 case IGNORE_TIMEOUT:
5113 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5114 __func__, __LINE__);
5115 break;
5116 }
5117 }
5118
5119 if (ret != DCMD_TIMEOUT)
5120 megasas_return_cmd(instance, cmd);
5121 }
5122
5123 /**
5124 * megasas_get_controller_info - Returns FW's controller structure
5125 * @instance: Adapter soft state
5126 *
5127 * Issues an internal command (DCMD) to get the FW's controller structure.
5128 * This information is mainly used to find out the maximum IO transfer per
5129 * command supported by the FW.
5130 */
5131 int
5132 megasas_get_ctrl_info(struct megasas_instance *instance)
5133 {
5134 int ret = 0;
5135 struct megasas_cmd *cmd;
5136 struct megasas_dcmd_frame *dcmd;
5137 struct megasas_ctrl_info *ci;
5138 dma_addr_t ci_h = 0;
5139
5140 ci = instance->ctrl_info_buf;
5141 ci_h = instance->ctrl_info_buf_h;
5142
5143 cmd = megasas_get_cmd(instance);
5144
5145 if (!cmd) {
5146 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n");
5147 return -ENOMEM;
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 megasas_ctrl_info));
5162 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
5163 dcmd->mbox.b[0] = 1;
5164
5165 megasas_set_dma_settings(instance, dcmd, ci_h,
5166 sizeof(struct megasas_ctrl_info));
5167
5168 if ((instance->adapter_type != MFI_SERIES) &&
5169 !instance->mask_interrupts) {
5170 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5171 } else {
5172 ret = megasas_issue_polled(instance, cmd);
5173 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5174 }
5175
5176 switch (ret) {
5177 case DCMD_SUCCESS:
5178 /* Save required controller information in
5179 * CPU endianness format.
5180 */
5181 le32_to_cpus((u32 *)&ci->properties.OnOffProperties);
5182 le16_to_cpus((u16 *)&ci->properties.on_off_properties2);
5183 le32_to_cpus((u32 *)&ci->adapterOperations2);
5184 le32_to_cpus((u32 *)&ci->adapterOperations3);
5185 le16_to_cpus((u16 *)&ci->adapter_operations4);
5186 le32_to_cpus((u32 *)&ci->adapter_operations5);
5187
5188 /* Update the latest Ext VD info.
5189 * From Init path, store current firmware details.
5190 * From OCR path, detect any firmware properties changes.
5191 * in case of Firmware upgrade without system reboot.
5192 */
5193 megasas_update_ext_vd_details(instance);
5194 instance->support_seqnum_jbod_fp =
5195 ci->adapterOperations3.useSeqNumJbodFP;
5196 instance->support_morethan256jbod =
5197 ci->adapter_operations4.support_pd_map_target_id;
5198 instance->support_nvme_passthru =
5199 ci->adapter_operations4.support_nvme_passthru;
5200 instance->support_pci_lane_margining =
5201 ci->adapter_operations5.support_pci_lane_margining;
5202 instance->task_abort_tmo = ci->TaskAbortTO;
5203 instance->max_reset_tmo = ci->MaxResetTO;
5204
5205 /*Check whether controller is iMR or MR */
5206 instance->is_imr = (ci->memory_size ? 0 : 1);
5207
5208 instance->snapdump_wait_time =
5209 (ci->properties.on_off_properties2.enable_snap_dump ?
5210 MEGASAS_DEFAULT_SNAP_DUMP_WAIT_TIME : 0);
5211
5212 instance->enable_fw_dev_list =
5213 ci->properties.on_off_properties2.enable_fw_dev_list;
5214
5215 dev_info(&instance->pdev->dev,
5216 "controller type\t: %s(%dMB)\n",
5217 instance->is_imr ? "iMR" : "MR",
5218 le16_to_cpu(ci->memory_size));
5219
5220 instance->disableOnlineCtrlReset =
5221 ci->properties.OnOffProperties.disableOnlineCtrlReset;
5222 instance->secure_jbod_support =
5223 ci->adapterOperations3.supportSecurityonJBOD;
5224 dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n",
5225 instance->disableOnlineCtrlReset ? "Disabled" : "Enabled");
5226 dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n",
5227 instance->secure_jbod_support ? "Yes" : "No");
5228 dev_info(&instance->pdev->dev, "NVMe passthru support\t: %s\n",
5229 instance->support_nvme_passthru ? "Yes" : "No");
5230 dev_info(&instance->pdev->dev,
5231 "FW provided TM TaskAbort/Reset timeout\t: %d secs/%d secs\n",
5232 instance->task_abort_tmo, instance->max_reset_tmo);
5233 dev_info(&instance->pdev->dev, "JBOD sequence map support\t: %s\n",
5234 instance->support_seqnum_jbod_fp ? "Yes" : "No");
5235 dev_info(&instance->pdev->dev, "PCI Lane Margining support\t: %s\n",
5236 instance->support_pci_lane_margining ? "Yes" : "No");
5237
5238 break;
5239
5240 case DCMD_TIMEOUT:
5241 switch (dcmd_timeout_ocr_possible(instance)) {
5242 case INITIATE_OCR:
5243 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5244 mutex_unlock(&instance->reset_mutex);
5245 megasas_reset_fusion(instance->host,
5246 MFI_IO_TIMEOUT_OCR);
5247 mutex_lock(&instance->reset_mutex);
5248 break;
5249 case KILL_ADAPTER:
5250 megaraid_sas_kill_hba(instance);
5251 break;
5252 case IGNORE_TIMEOUT:
5253 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5254 __func__, __LINE__);
5255 break;
5256 }
5257 break;
5258 case DCMD_FAILED:
5259 megaraid_sas_kill_hba(instance);
5260 break;
5261
5262 }
5263
5264 if (ret != DCMD_TIMEOUT)
5265 megasas_return_cmd(instance, cmd);
5266
5267 return ret;
5268 }
5269
5270 /*
5271 * megasas_set_crash_dump_params - Sends address of crash dump DMA buffer
5272 * to firmware
5273 *
5274 * @instance: Adapter soft state
5275 * @crash_buf_state - tell FW to turn ON/OFF crash dump feature
5276 MR_CRASH_BUF_TURN_OFF = 0
5277 MR_CRASH_BUF_TURN_ON = 1
5278 * @return 0 on success non-zero on failure.
5279 * Issues an internal command (DCMD) to set parameters for crash dump feature.
5280 * Driver will send address of crash dump DMA buffer and set mbox to tell FW
5281 * that driver supports crash dump feature. This DCMD will be sent only if
5282 * crash dump feature is supported by the FW.
5283 *
5284 */
5285 int megasas_set_crash_dump_params(struct megasas_instance *instance,
5286 u8 crash_buf_state)
5287 {
5288 int ret = 0;
5289 struct megasas_cmd *cmd;
5290 struct megasas_dcmd_frame *dcmd;
5291
5292 cmd = megasas_get_cmd(instance);
5293
5294 if (!cmd) {
5295 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n");
5296 return -ENOMEM;
5297 }
5298
5299
5300 dcmd = &cmd->frame->dcmd;
5301
5302 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5303 dcmd->mbox.b[0] = crash_buf_state;
5304 dcmd->cmd = MFI_CMD_DCMD;
5305 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5306 dcmd->sge_count = 1;
5307 dcmd->flags = MFI_FRAME_DIR_NONE;
5308 dcmd->timeout = 0;
5309 dcmd->pad_0 = 0;
5310 dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
5311 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
5312
5313 megasas_set_dma_settings(instance, dcmd, instance->crash_dump_h,
5314 CRASH_DMA_BUF_SIZE);
5315
5316 if ((instance->adapter_type != MFI_SERIES) &&
5317 !instance->mask_interrupts)
5318 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5319 else
5320 ret = megasas_issue_polled(instance, cmd);
5321
5322 if (ret == DCMD_TIMEOUT) {
5323 switch (dcmd_timeout_ocr_possible(instance)) {
5324 case INITIATE_OCR:
5325 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5326 megasas_reset_fusion(instance->host,
5327 MFI_IO_TIMEOUT_OCR);
5328 break;
5329 case KILL_ADAPTER:
5330 megaraid_sas_kill_hba(instance);
5331 break;
5332 case IGNORE_TIMEOUT:
5333 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5334 __func__, __LINE__);
5335 break;
5336 }
5337 } else
5338 megasas_return_cmd(instance, cmd);
5339
5340 return ret;
5341 }
5342
5343 /**
5344 * megasas_issue_init_mfi - Initializes the FW
5345 * @instance: Adapter soft state
5346 *
5347 * Issues the INIT MFI cmd
5348 */
5349 static int
5350 megasas_issue_init_mfi(struct megasas_instance *instance)
5351 {
5352 __le32 context;
5353 struct megasas_cmd *cmd;
5354 struct megasas_init_frame *init_frame;
5355 struct megasas_init_queue_info *initq_info;
5356 dma_addr_t init_frame_h;
5357 dma_addr_t initq_info_h;
5358
5359 /*
5360 * Prepare a init frame. Note the init frame points to queue info
5361 * structure. Each frame has SGL allocated after first 64 bytes. For
5362 * this frame - since we don't need any SGL - we use SGL's space as
5363 * queue info structure
5364 *
5365 * We will not get a NULL command below. We just created the pool.
5366 */
5367 cmd = megasas_get_cmd(instance);
5368
5369 init_frame = (struct megasas_init_frame *)cmd->frame;
5370 initq_info = (struct megasas_init_queue_info *)
5371 ((unsigned long)init_frame + 64);
5372
5373 init_frame_h = cmd->frame_phys_addr;
5374 initq_info_h = init_frame_h + 64;
5375
5376 context = init_frame->context;
5377 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
5378 memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
5379 init_frame->context = context;
5380
5381 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
5382 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
5383
5384 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
5385 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
5386
5387 init_frame->cmd = MFI_CMD_INIT;
5388 init_frame->cmd_status = MFI_STAT_INVALID_STATUS;
5389 init_frame->queue_info_new_phys_addr_lo =
5390 cpu_to_le32(lower_32_bits(initq_info_h));
5391 init_frame->queue_info_new_phys_addr_hi =
5392 cpu_to_le32(upper_32_bits(initq_info_h));
5393
5394 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
5395
5396 /*
5397 * disable the intr before firing the init frame to FW
5398 */
5399 instance->instancet->disable_intr(instance);
5400
5401 /*
5402 * Issue the init frame in polled mode
5403 */
5404
5405 if (megasas_issue_polled(instance, cmd)) {
5406 dev_err(&instance->pdev->dev, "Failed to init firmware\n");
5407 megasas_return_cmd(instance, cmd);
5408 goto fail_fw_init;
5409 }
5410
5411 megasas_return_cmd(instance, cmd);
5412
5413 return 0;
5414
5415 fail_fw_init:
5416 return -EINVAL;
5417 }
5418
5419 static u32
5420 megasas_init_adapter_mfi(struct megasas_instance *instance)
5421 {
5422 u32 context_sz;
5423 u32 reply_q_sz;
5424
5425 /*
5426 * Get various operational parameters from status register
5427 */
5428 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(instance) & 0x00FFFF;
5429 /*
5430 * Reduce the max supported cmds by 1. This is to ensure that the
5431 * reply_q_sz (1 more than the max cmd that driver may send)
5432 * does not exceed max cmds that the FW can support
5433 */
5434 instance->max_fw_cmds = instance->max_fw_cmds-1;
5435 instance->max_mfi_cmds = instance->max_fw_cmds;
5436 instance->max_num_sge = (instance->instancet->read_fw_status_reg(instance) & 0xFF0000) >>
5437 0x10;
5438 /*
5439 * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands
5440 * are reserved for IOCTL + driver's internal DCMDs.
5441 */
5442 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
5443 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
5444 instance->max_scsi_cmds = (instance->max_fw_cmds -
5445 MEGASAS_SKINNY_INT_CMDS);
5446 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
5447 } else {
5448 instance->max_scsi_cmds = (instance->max_fw_cmds -
5449 MEGASAS_INT_CMDS);
5450 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS));
5451 }
5452
5453 instance->cur_can_queue = instance->max_scsi_cmds;
5454 /*
5455 * Create a pool of commands
5456 */
5457 if (megasas_alloc_cmds(instance))
5458 goto fail_alloc_cmds;
5459
5460 /*
5461 * Allocate memory for reply queue. Length of reply queue should
5462 * be _one_ more than the maximum commands handled by the firmware.
5463 *
5464 * Note: When FW completes commands, it places corresponding contex
5465 * values in this circular reply queue. This circular queue is a fairly
5466 * typical producer-consumer queue. FW is the producer (of completed
5467 * commands) and the driver is the consumer.
5468 */
5469 context_sz = sizeof(u32);
5470 reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
5471
5472 instance->reply_queue = dma_alloc_coherent(&instance->pdev->dev,
5473 reply_q_sz, &instance->reply_queue_h, GFP_KERNEL);
5474
5475 if (!instance->reply_queue) {
5476 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n");
5477 goto fail_reply_queue;
5478 }
5479
5480 if (megasas_issue_init_mfi(instance))
5481 goto fail_fw_init;
5482
5483 if (megasas_get_ctrl_info(instance)) {
5484 dev_err(&instance->pdev->dev, "(%d): Could get controller info "
5485 "Fail from %s %d\n", instance->unique_id,
5486 __func__, __LINE__);
5487 goto fail_fw_init;
5488 }
5489
5490 instance->fw_support_ieee = 0;
5491 instance->fw_support_ieee =
5492 (instance->instancet->read_fw_status_reg(instance) &
5493 0x04000000);
5494
5495 dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d",
5496 instance->fw_support_ieee);
5497
5498 if (instance->fw_support_ieee)
5499 instance->flag_ieee = 1;
5500
5501 return 0;
5502
5503 fail_fw_init:
5504
5505 dma_free_coherent(&instance->pdev->dev, reply_q_sz,
5506 instance->reply_queue, instance->reply_queue_h);
5507 fail_reply_queue:
5508 megasas_free_cmds(instance);
5509
5510 fail_alloc_cmds:
5511 return 1;
5512 }
5513
5514 static
5515 void megasas_setup_irq_poll(struct megasas_instance *instance)
5516 {
5517 struct megasas_irq_context *irq_ctx;
5518 u32 count, i;
5519
5520 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5521
5522 /* Initialize IRQ poll */
5523 for (i = 0; i < count; i++) {
5524 irq_ctx = &instance->irq_context[i];
5525 irq_ctx->os_irq = pci_irq_vector(instance->pdev, i);
5526 irq_ctx->irq_poll_scheduled = false;
5527 irq_poll_init(&irq_ctx->irqpoll,
5528 instance->threshold_reply_count,
5529 megasas_irqpoll);
5530 }
5531 }
5532
5533 /*
5534 * megasas_setup_irqs_ioapic - register legacy interrupts.
5535 * @instance: Adapter soft state
5536 *
5537 * Do not enable interrupt, only setup ISRs.
5538 *
5539 * Return 0 on success.
5540 */
5541 static int
5542 megasas_setup_irqs_ioapic(struct megasas_instance *instance)
5543 {
5544 struct pci_dev *pdev;
5545
5546 pdev = instance->pdev;
5547 instance->irq_context[0].instance = instance;
5548 instance->irq_context[0].MSIxIndex = 0;
5549 snprintf(instance->irq_context->name, MEGASAS_MSIX_NAME_LEN, "%s%u",
5550 "megasas", instance->host->host_no);
5551 if (request_irq(pci_irq_vector(pdev, 0),
5552 instance->instancet->service_isr, IRQF_SHARED,
5553 instance->irq_context->name, &instance->irq_context[0])) {
5554 dev_err(&instance->pdev->dev,
5555 "Failed to register IRQ from %s %d\n",
5556 __func__, __LINE__);
5557 return -1;
5558 }
5559 instance->perf_mode = MR_LATENCY_PERF_MODE;
5560 instance->low_latency_index_start = 0;
5561 return 0;
5562 }
5563
5564 /**
5565 * megasas_setup_irqs_msix - register MSI-x interrupts.
5566 * @instance: Adapter soft state
5567 * @is_probe: Driver probe check
5568 *
5569 * Do not enable interrupt, only setup ISRs.
5570 *
5571 * Return 0 on success.
5572 */
5573 static int
5574 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe)
5575 {
5576 int i, j;
5577 struct pci_dev *pdev;
5578
5579 pdev = instance->pdev;
5580
5581 /* Try MSI-x */
5582 for (i = 0; i < instance->msix_vectors; i++) {
5583 instance->irq_context[i].instance = instance;
5584 instance->irq_context[i].MSIxIndex = i;
5585 snprintf(instance->irq_context[i].name, MEGASAS_MSIX_NAME_LEN, "%s%u-msix%u",
5586 "megasas", instance->host->host_no, i);
5587 if (request_irq(pci_irq_vector(pdev, i),
5588 instance->instancet->service_isr, 0, instance->irq_context[i].name,
5589 &instance->irq_context[i])) {
5590 dev_err(&instance->pdev->dev,
5591 "Failed to register IRQ for vector %d.\n", i);
5592 for (j = 0; j < i; j++)
5593 free_irq(pci_irq_vector(pdev, j),
5594 &instance->irq_context[j]);
5595 /* Retry irq register for IO_APIC*/
5596 instance->msix_vectors = 0;
5597 instance->msix_load_balance = false;
5598 if (is_probe) {
5599 pci_free_irq_vectors(instance->pdev);
5600 return megasas_setup_irqs_ioapic(instance);
5601 } else {
5602 return -1;
5603 }
5604 }
5605 }
5606
5607 return 0;
5608 }
5609
5610 /*
5611 * megasas_destroy_irqs- unregister interrupts.
5612 * @instance: Adapter soft state
5613 * return: void
5614 */
5615 static void
5616 megasas_destroy_irqs(struct megasas_instance *instance) {
5617
5618 int i;
5619 int count;
5620 struct megasas_irq_context *irq_ctx;
5621
5622 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5623 if (instance->adapter_type != MFI_SERIES) {
5624 for (i = 0; i < count; i++) {
5625 irq_ctx = &instance->irq_context[i];
5626 irq_poll_disable(&irq_ctx->irqpoll);
5627 }
5628 }
5629
5630 if (instance->msix_vectors)
5631 for (i = 0; i < instance->msix_vectors; i++) {
5632 free_irq(pci_irq_vector(instance->pdev, i),
5633 &instance->irq_context[i]);
5634 }
5635 else
5636 free_irq(pci_irq_vector(instance->pdev, 0),
5637 &instance->irq_context[0]);
5638 }
5639
5640 /**
5641 * megasas_setup_jbod_map - setup jbod map for FP seq_number.
5642 * @instance: Adapter soft state
5643 * @is_probe: Driver probe check
5644 *
5645 * Return 0 on success.
5646 */
5647 void
5648 megasas_setup_jbod_map(struct megasas_instance *instance)
5649 {
5650 int i;
5651 struct fusion_context *fusion = instance->ctrl_context;
5652 u32 pd_seq_map_sz;
5653
5654 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
5655 (sizeof(struct MR_PD_CFG_SEQ) * (MAX_PHYSICAL_DEVICES - 1));
5656
5657 instance->use_seqnum_jbod_fp =
5658 instance->support_seqnum_jbod_fp;
5659 if (reset_devices || !fusion ||
5660 !instance->support_seqnum_jbod_fp) {
5661 dev_info(&instance->pdev->dev,
5662 "JBOD sequence map is disabled %s %d\n",
5663 __func__, __LINE__);
5664 instance->use_seqnum_jbod_fp = false;
5665 return;
5666 }
5667
5668 if (fusion->pd_seq_sync[0])
5669 goto skip_alloc;
5670
5671 for (i = 0; i < JBOD_MAPS_COUNT; i++) {
5672 fusion->pd_seq_sync[i] = dma_alloc_coherent
5673 (&instance->pdev->dev, pd_seq_map_sz,
5674 &fusion->pd_seq_phys[i], GFP_KERNEL);
5675 if (!fusion->pd_seq_sync[i]) {
5676 dev_err(&instance->pdev->dev,
5677 "Failed to allocate memory from %s %d\n",
5678 __func__, __LINE__);
5679 if (i == 1) {
5680 dma_free_coherent(&instance->pdev->dev,
5681 pd_seq_map_sz, fusion->pd_seq_sync[0],
5682 fusion->pd_seq_phys[0]);
5683 fusion->pd_seq_sync[0] = NULL;
5684 }
5685 instance->use_seqnum_jbod_fp = false;
5686 return;
5687 }
5688 }
5689
5690 skip_alloc:
5691 if (!megasas_sync_pd_seq_num(instance, false) &&
5692 !megasas_sync_pd_seq_num(instance, true))
5693 instance->use_seqnum_jbod_fp = true;
5694 else
5695 instance->use_seqnum_jbod_fp = false;
5696 }
5697
5698 static void megasas_setup_reply_map(struct megasas_instance *instance)
5699 {
5700 const struct cpumask *mask;
5701 unsigned int queue, cpu, low_latency_index_start;
5702
5703 low_latency_index_start = instance->low_latency_index_start;
5704
5705 for (queue = low_latency_index_start; queue < instance->msix_vectors; queue++) {
5706 mask = pci_irq_get_affinity(instance->pdev, queue);
5707 if (!mask)
5708 goto fallback;
5709
5710 for_each_cpu(cpu, mask)
5711 instance->reply_map[cpu] = queue;
5712 }
5713 return;
5714
5715 fallback:
5716 queue = low_latency_index_start;
5717 for_each_possible_cpu(cpu) {
5718 instance->reply_map[cpu] = queue;
5719 if (queue == (instance->msix_vectors - 1))
5720 queue = low_latency_index_start;
5721 else
5722 queue++;
5723 }
5724 }
5725
5726 /**
5727 * megasas_get_device_list - Get the PD and LD device list from FW.
5728 * @instance: Adapter soft state
5729 * @return: Success or failure
5730 *
5731 * Issue DCMDs to Firmware to get the PD and LD list.
5732 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
5733 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
5734 */
5735 static
5736 int megasas_get_device_list(struct megasas_instance *instance)
5737 {
5738 memset(instance->pd_list, 0,
5739 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
5740 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
5741
5742 if (instance->enable_fw_dev_list) {
5743 if (megasas_host_device_list_query(instance, true))
5744 return FAILED;
5745 } else {
5746 if (megasas_get_pd_list(instance) < 0) {
5747 dev_err(&instance->pdev->dev, "failed to get PD list\n");
5748 return FAILED;
5749 }
5750
5751 if (megasas_ld_list_query(instance,
5752 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) {
5753 dev_err(&instance->pdev->dev, "failed to get LD list\n");
5754 return FAILED;
5755 }
5756 }
5757
5758 return SUCCESS;
5759 }
5760
5761 /**
5762 * megasas_set_high_iops_queue_affinity_hint - Set affinity hint for high IOPS queues
5763 * @instance: Adapter soft state
5764 * return: void
5765 */
5766 static inline void
5767 megasas_set_high_iops_queue_affinity_hint(struct megasas_instance *instance)
5768 {
5769 int i;
5770 int local_numa_node;
5771
5772 if (instance->perf_mode == MR_BALANCED_PERF_MODE) {
5773 local_numa_node = dev_to_node(&instance->pdev->dev);
5774
5775 for (i = 0; i < instance->low_latency_index_start; i++)
5776 irq_set_affinity_hint(pci_irq_vector(instance->pdev, i),
5777 cpumask_of_node(local_numa_node));
5778 }
5779 }
5780
5781 static int
5782 __megasas_alloc_irq_vectors(struct megasas_instance *instance)
5783 {
5784 int i, irq_flags;
5785 struct irq_affinity desc = { .pre_vectors = instance->low_latency_index_start };
5786 struct irq_affinity *descp = &desc;
5787
5788 irq_flags = PCI_IRQ_MSIX;
5789
5790 if (instance->smp_affinity_enable)
5791 irq_flags |= PCI_IRQ_AFFINITY;
5792 else
5793 descp = NULL;
5794
5795 i = pci_alloc_irq_vectors_affinity(instance->pdev,
5796 instance->low_latency_index_start,
5797 instance->msix_vectors, irq_flags, descp);
5798
5799 return i;
5800 }
5801
5802 /**
5803 * megasas_alloc_irq_vectors - Allocate IRQ vectors/enable MSI-x vectors
5804 * @instance: Adapter soft state
5805 * return: void
5806 */
5807 static void
5808 megasas_alloc_irq_vectors(struct megasas_instance *instance)
5809 {
5810 int i;
5811 unsigned int num_msix_req;
5812
5813 i = __megasas_alloc_irq_vectors(instance);
5814
5815 if ((instance->perf_mode == MR_BALANCED_PERF_MODE) &&
5816 (i != instance->msix_vectors)) {
5817 if (instance->msix_vectors)
5818 pci_free_irq_vectors(instance->pdev);
5819 /* Disable Balanced IOPS mode and try realloc vectors */
5820 instance->perf_mode = MR_LATENCY_PERF_MODE;
5821 instance->low_latency_index_start = 1;
5822 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
5823
5824 instance->msix_vectors = min(num_msix_req,
5825 instance->msix_vectors);
5826
5827 i = __megasas_alloc_irq_vectors(instance);
5828
5829 }
5830
5831 dev_info(&instance->pdev->dev,
5832 "requested/available msix %d/%d\n", instance->msix_vectors, i);
5833
5834 if (i > 0)
5835 instance->msix_vectors = i;
5836 else
5837 instance->msix_vectors = 0;
5838
5839 if (instance->smp_affinity_enable)
5840 megasas_set_high_iops_queue_affinity_hint(instance);
5841 }
5842
5843 /**
5844 * megasas_init_fw - Initializes the FW
5845 * @instance: Adapter soft state
5846 *
5847 * This is the main function for initializing firmware
5848 */
5849
5850 static int megasas_init_fw(struct megasas_instance *instance)
5851 {
5852 u32 max_sectors_1;
5853 u32 max_sectors_2, tmp_sectors, msix_enable;
5854 u32 scratch_pad_1, scratch_pad_2, scratch_pad_3, status_reg;
5855 resource_size_t base_addr;
5856 void *base_addr_phys;
5857 struct megasas_ctrl_info *ctrl_info = NULL;
5858 unsigned long bar_list;
5859 int i, j, loop;
5860 struct IOV_111 *iovPtr;
5861 struct fusion_context *fusion;
5862 bool intr_coalescing;
5863 unsigned int num_msix_req;
5864 u16 lnksta, speed;
5865
5866 fusion = instance->ctrl_context;
5867
5868 /* Find first memory bar */
5869 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
5870 instance->bar = find_first_bit(&bar_list, BITS_PER_LONG);
5871 if (pci_request_selected_regions(instance->pdev, 1<<instance->bar,
5872 "megasas: LSI")) {
5873 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n");
5874 return -EBUSY;
5875 }
5876
5877 base_addr = pci_resource_start(instance->pdev, instance->bar);
5878 instance->reg_set = ioremap_nocache(base_addr, 8192);
5879
5880 if (!instance->reg_set) {
5881 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n");
5882 goto fail_ioremap;
5883 }
5884
5885 base_addr_phys = &base_addr;
5886 dev_printk(KERN_DEBUG, &instance->pdev->dev,
5887 "BAR:0x%lx BAR's base_addr(phys):%pa mapped virt_addr:0x%p\n",
5888 instance->bar, base_addr_phys, instance->reg_set);
5889
5890 if (instance->adapter_type != MFI_SERIES)
5891 instance->instancet = &megasas_instance_template_fusion;
5892 else {
5893 switch (instance->pdev->device) {
5894 case PCI_DEVICE_ID_LSI_SAS1078R:
5895 case PCI_DEVICE_ID_LSI_SAS1078DE:
5896 instance->instancet = &megasas_instance_template_ppc;
5897 break;
5898 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
5899 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
5900 instance->instancet = &megasas_instance_template_gen2;
5901 break;
5902 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
5903 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
5904 instance->instancet = &megasas_instance_template_skinny;
5905 break;
5906 case PCI_DEVICE_ID_LSI_SAS1064R:
5907 case PCI_DEVICE_ID_DELL_PERC5:
5908 default:
5909 instance->instancet = &megasas_instance_template_xscale;
5910 instance->pd_list_not_supported = 1;
5911 break;
5912 }
5913 }
5914
5915 if (megasas_transition_to_ready(instance, 0)) {
5916 dev_info(&instance->pdev->dev,
5917 "Failed to transition controller to ready from %s!\n",
5918 __func__);
5919 if (instance->adapter_type != MFI_SERIES) {
5920 status_reg = instance->instancet->read_fw_status_reg(
5921 instance);
5922 if (status_reg & MFI_RESET_ADAPTER) {
5923 if (megasas_adp_reset_wait_for_ready
5924 (instance, true, 0) == FAILED)
5925 goto fail_ready_state;
5926 } else {
5927 goto fail_ready_state;
5928 }
5929 } else {
5930 atomic_set(&instance->fw_reset_no_pci_access, 1);
5931 instance->instancet->adp_reset
5932 (instance, instance->reg_set);
5933 atomic_set(&instance->fw_reset_no_pci_access, 0);
5934
5935 /*waiting for about 30 second before retry*/
5936 ssleep(30);
5937
5938 if (megasas_transition_to_ready(instance, 0))
5939 goto fail_ready_state;
5940 }
5941
5942 dev_info(&instance->pdev->dev,
5943 "FW restarted successfully from %s!\n",
5944 __func__);
5945 }
5946
5947 megasas_init_ctrl_params(instance);
5948
5949 if (megasas_set_dma_mask(instance))
5950 goto fail_ready_state;
5951
5952 if (megasas_alloc_ctrl_mem(instance))
5953 goto fail_alloc_dma_buf;
5954
5955 if (megasas_alloc_ctrl_dma_buffers(instance))
5956 goto fail_alloc_dma_buf;
5957
5958 fusion = instance->ctrl_context;
5959
5960 if (instance->adapter_type >= VENTURA_SERIES) {
5961 scratch_pad_2 =
5962 megasas_readl(instance,
5963 &instance->reg_set->outbound_scratch_pad_2);
5964 instance->max_raid_mapsize = ((scratch_pad_2 >>
5965 MR_MAX_RAID_MAP_SIZE_OFFSET_SHIFT) &
5966 MR_MAX_RAID_MAP_SIZE_MASK);
5967 }
5968
5969 instance->enable_sdev_max_qd = enable_sdev_max_qd;
5970
5971 switch (instance->adapter_type) {
5972 case VENTURA_SERIES:
5973 fusion->pcie_bw_limitation = true;
5974 break;
5975 case AERO_SERIES:
5976 fusion->r56_div_offload = true;
5977 break;
5978 default:
5979 break;
5980 }
5981
5982 /* Check if MSI-X is supported while in ready state */
5983 msix_enable = (instance->instancet->read_fw_status_reg(instance) &
5984 0x4000000) >> 0x1a;
5985 if (msix_enable && !msix_disable) {
5986
5987 scratch_pad_1 = megasas_readl
5988 (instance, &instance->reg_set->outbound_scratch_pad_1);
5989 /* Check max MSI-X vectors */
5990 if (fusion) {
5991 if (instance->adapter_type == THUNDERBOLT_SERIES) {
5992 /* Thunderbolt Series*/
5993 instance->msix_vectors = (scratch_pad_1
5994 & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
5995 } else {
5996 instance->msix_vectors = ((scratch_pad_1
5997 & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
5998 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
5999
6000 /*
6001 * For Invader series, > 8 MSI-x vectors
6002 * supported by FW/HW implies combined
6003 * reply queue mode is enabled.
6004 * For Ventura series, > 16 MSI-x vectors
6005 * supported by FW/HW implies combined
6006 * reply queue mode is enabled.
6007 */
6008 switch (instance->adapter_type) {
6009 case INVADER_SERIES:
6010 if (instance->msix_vectors > 8)
6011 instance->msix_combined = true;
6012 break;
6013 case AERO_SERIES:
6014 case VENTURA_SERIES:
6015 if (instance->msix_vectors > 16)
6016 instance->msix_combined = true;
6017 break;
6018 }
6019
6020 if (rdpq_enable)
6021 instance->is_rdpq = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ?
6022 1 : 0;
6023
6024 if (instance->adapter_type >= INVADER_SERIES &&
6025 !instance->msix_combined) {
6026 instance->msix_load_balance = true;
6027 instance->smp_affinity_enable = false;
6028 }
6029
6030 /* Save 1-15 reply post index address to local memory
6031 * Index 0 is already saved from reg offset
6032 * MPI2_REPLY_POST_HOST_INDEX_OFFSET
6033 */
6034 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
6035 instance->reply_post_host_index_addr[loop] =
6036 (u32 __iomem *)
6037 ((u8 __iomem *)instance->reg_set +
6038 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
6039 + (loop * 0x10));
6040 }
6041 }
6042
6043 dev_info(&instance->pdev->dev,
6044 "firmware supports msix\t: (%d)",
6045 instance->msix_vectors);
6046 if (msix_vectors)
6047 instance->msix_vectors = min(msix_vectors,
6048 instance->msix_vectors);
6049 } else /* MFI adapters */
6050 instance->msix_vectors = 1;
6051
6052
6053 /*
6054 * For Aero (if some conditions are met), driver will configure a
6055 * few additional reply queues with interrupt coalescing enabled.
6056 * These queues with interrupt coalescing enabled are called
6057 * High IOPS queues and rest of reply queues (based on number of
6058 * logical CPUs) are termed as Low latency queues.
6059 *
6060 * Total Number of reply queues = High IOPS queues + low latency queues
6061 *
6062 * For rest of fusion adapters, 1 additional reply queue will be
6063 * reserved for management commands, rest of reply queues
6064 * (based on number of logical CPUs) will be used for IOs and
6065 * referenced as IO queues.
6066 * Total Number of reply queues = 1 + IO queues
6067 *
6068 * MFI adapters supports single MSI-x so single reply queue
6069 * will be used for IO and management commands.
6070 */
6071
6072 intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ?
6073 true : false;
6074 if (intr_coalescing &&
6075 (num_online_cpus() >= MR_HIGH_IOPS_QUEUE_COUNT) &&
6076 (instance->msix_vectors == MEGASAS_MAX_MSIX_QUEUES))
6077 instance->perf_mode = MR_BALANCED_PERF_MODE;
6078 else
6079 instance->perf_mode = MR_LATENCY_PERF_MODE;
6080
6081
6082 if (instance->adapter_type == AERO_SERIES) {
6083 pcie_capability_read_word(instance->pdev, PCI_EXP_LNKSTA, &lnksta);
6084 speed = lnksta & PCI_EXP_LNKSTA_CLS;
6085
6086 /*
6087 * For Aero, if PCIe link speed is <16 GT/s, then driver should operate
6088 * in latency perf mode and enable R1 PCI bandwidth algorithm
6089 */
6090 if (speed < 0x4) {
6091 instance->perf_mode = MR_LATENCY_PERF_MODE;
6092 fusion->pcie_bw_limitation = true;
6093 }
6094
6095 /*
6096 * Performance mode settings provided through module parameter-perf_mode will
6097 * take affect only for:
6098 * 1. Aero family of adapters.
6099 * 2. When user sets module parameter- perf_mode in range of 0-2.
6100 */
6101 if ((perf_mode >= MR_BALANCED_PERF_MODE) &&
6102 (perf_mode <= MR_LATENCY_PERF_MODE))
6103 instance->perf_mode = perf_mode;
6104 /*
6105 * If intr coalescing is not supported by controller FW, then IOPS
6106 * and Balanced modes are not feasible.
6107 */
6108 if (!intr_coalescing)
6109 instance->perf_mode = MR_LATENCY_PERF_MODE;
6110
6111 }
6112
6113 if (instance->perf_mode == MR_BALANCED_PERF_MODE)
6114 instance->low_latency_index_start =
6115 MR_HIGH_IOPS_QUEUE_COUNT;
6116 else
6117 instance->low_latency_index_start = 1;
6118
6119 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
6120
6121 instance->msix_vectors = min(num_msix_req,
6122 instance->msix_vectors);
6123
6124 megasas_alloc_irq_vectors(instance);
6125 if (!instance->msix_vectors)
6126 instance->msix_load_balance = false;
6127 }
6128 /*
6129 * MSI-X host index 0 is common for all adapter.
6130 * It is used for all MPT based Adapters.
6131 */
6132 if (instance->msix_combined) {
6133 instance->reply_post_host_index_addr[0] =
6134 (u32 *)((u8 *)instance->reg_set +
6135 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET);
6136 } else {
6137 instance->reply_post_host_index_addr[0] =
6138 (u32 *)((u8 *)instance->reg_set +
6139 MPI2_REPLY_POST_HOST_INDEX_OFFSET);
6140 }
6141
6142 if (!instance->msix_vectors) {
6143 i = pci_alloc_irq_vectors(instance->pdev, 1, 1, PCI_IRQ_LEGACY);
6144 if (i < 0)
6145 goto fail_init_adapter;
6146 }
6147
6148 megasas_setup_reply_map(instance);
6149
6150 dev_info(&instance->pdev->dev,
6151 "current msix/online cpus\t: (%d/%d)\n",
6152 instance->msix_vectors, (unsigned int)num_online_cpus());
6153 dev_info(&instance->pdev->dev,
6154 "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled");
6155
6156 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
6157 (unsigned long)instance);
6158
6159 /*
6160 * Below are default value for legacy Firmware.
6161 * non-fusion based controllers
6162 */
6163 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
6164 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
6165 /* Get operational params, sge flags, send init cmd to controller */
6166 if (instance->instancet->init_adapter(instance))
6167 goto fail_init_adapter;
6168
6169 if (instance->adapter_type >= VENTURA_SERIES) {
6170 scratch_pad_3 =
6171 megasas_readl(instance,
6172 &instance->reg_set->outbound_scratch_pad_3);
6173 if ((scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK) >=
6174 MR_DEFAULT_NVME_PAGE_SHIFT)
6175 instance->nvme_page_size =
6176 (1 << (scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK));
6177
6178 dev_info(&instance->pdev->dev,
6179 "NVME page size\t: (%d)\n", instance->nvme_page_size);
6180 }
6181
6182 if (instance->msix_vectors ?
6183 megasas_setup_irqs_msix(instance, 1) :
6184 megasas_setup_irqs_ioapic(instance))
6185 goto fail_init_adapter;
6186
6187 if (instance->adapter_type != MFI_SERIES)
6188 megasas_setup_irq_poll(instance);
6189
6190 instance->instancet->enable_intr(instance);
6191
6192 dev_info(&instance->pdev->dev, "INIT adapter done\n");
6193
6194 megasas_setup_jbod_map(instance);
6195
6196 if (megasas_get_device_list(instance) != SUCCESS) {
6197 dev_err(&instance->pdev->dev,
6198 "%s: megasas_get_device_list failed\n",
6199 __func__);
6200 goto fail_get_ld_pd_list;
6201 }
6202
6203 /* stream detection initialization */
6204 if (instance->adapter_type >= VENTURA_SERIES) {
6205 fusion->stream_detect_by_ld =
6206 kcalloc(MAX_LOGICAL_DRIVES_EXT,
6207 sizeof(struct LD_STREAM_DETECT *),
6208 GFP_KERNEL);
6209 if (!fusion->stream_detect_by_ld) {
6210 dev_err(&instance->pdev->dev,
6211 "unable to allocate stream detection for pool of LDs\n");
6212 goto fail_get_ld_pd_list;
6213 }
6214 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) {
6215 fusion->stream_detect_by_ld[i] =
6216 kzalloc(sizeof(struct LD_STREAM_DETECT),
6217 GFP_KERNEL);
6218 if (!fusion->stream_detect_by_ld[i]) {
6219 dev_err(&instance->pdev->dev,
6220 "unable to allocate stream detect by LD\n ");
6221 for (j = 0; j < i; ++j)
6222 kfree(fusion->stream_detect_by_ld[j]);
6223 kfree(fusion->stream_detect_by_ld);
6224 fusion->stream_detect_by_ld = NULL;
6225 goto fail_get_ld_pd_list;
6226 }
6227 fusion->stream_detect_by_ld[i]->mru_bit_map
6228 = MR_STREAM_BITMAP;
6229 }
6230 }
6231
6232 /*
6233 * Compute the max allowed sectors per IO: The controller info has two
6234 * limits on max sectors. Driver should use the minimum of these two.
6235 *
6236 * 1 << stripe_sz_ops.min = max sectors per strip
6237 *
6238 * Note that older firmwares ( < FW ver 30) didn't report information
6239 * to calculate max_sectors_1. So the number ended up as zero always.
6240 */
6241 tmp_sectors = 0;
6242 ctrl_info = instance->ctrl_info_buf;
6243
6244 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
6245 le16_to_cpu(ctrl_info->max_strips_per_io);
6246 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
6247
6248 tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2);
6249
6250 instance->peerIsPresent = ctrl_info->cluster.peerIsPresent;
6251 instance->passive = ctrl_info->cluster.passive;
6252 memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId));
6253 instance->UnevenSpanSupport =
6254 ctrl_info->adapterOperations2.supportUnevenSpans;
6255 if (instance->UnevenSpanSupport) {
6256 struct fusion_context *fusion = instance->ctrl_context;
6257 if (MR_ValidateMapInfo(instance, instance->map_id))
6258 fusion->fast_path_io = 1;
6259 else
6260 fusion->fast_path_io = 0;
6261
6262 }
6263 if (ctrl_info->host_interface.SRIOV) {
6264 instance->requestorId = ctrl_info->iov.requestorId;
6265 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) {
6266 if (!ctrl_info->adapterOperations2.activePassive)
6267 instance->PlasmaFW111 = 1;
6268
6269 dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n",
6270 instance->PlasmaFW111 ? "1.11" : "new");
6271
6272 if (instance->PlasmaFW111) {
6273 iovPtr = (struct IOV_111 *)
6274 ((unsigned char *)ctrl_info + IOV_111_OFFSET);
6275 instance->requestorId = iovPtr->requestorId;
6276 }
6277 }
6278 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n",
6279 instance->requestorId);
6280 }
6281
6282 instance->crash_dump_fw_support =
6283 ctrl_info->adapterOperations3.supportCrashDump;
6284 instance->crash_dump_drv_support =
6285 (instance->crash_dump_fw_support &&
6286 instance->crash_dump_buf);
6287 if (instance->crash_dump_drv_support)
6288 megasas_set_crash_dump_params(instance,
6289 MR_CRASH_BUF_TURN_OFF);
6290
6291 else {
6292 if (instance->crash_dump_buf)
6293 dma_free_coherent(&instance->pdev->dev,
6294 CRASH_DMA_BUF_SIZE,
6295 instance->crash_dump_buf,
6296 instance->crash_dump_h);
6297 instance->crash_dump_buf = NULL;
6298 }
6299
6300 if (instance->snapdump_wait_time) {
6301 megasas_get_snapdump_properties(instance);
6302 dev_info(&instance->pdev->dev, "Snap dump wait time\t: %d\n",
6303 instance->snapdump_wait_time);
6304 }
6305
6306 dev_info(&instance->pdev->dev,
6307 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n",
6308 le16_to_cpu(ctrl_info->pci.vendor_id),
6309 le16_to_cpu(ctrl_info->pci.device_id),
6310 le16_to_cpu(ctrl_info->pci.sub_vendor_id),
6311 le16_to_cpu(ctrl_info->pci.sub_device_id));
6312 dev_info(&instance->pdev->dev, "unevenspan support : %s\n",
6313 instance->UnevenSpanSupport ? "yes" : "no");
6314 dev_info(&instance->pdev->dev, "firmware crash dump : %s\n",
6315 instance->crash_dump_drv_support ? "yes" : "no");
6316 dev_info(&instance->pdev->dev, "JBOD sequence map : %s\n",
6317 instance->use_seqnum_jbod_fp ? "enabled" : "disabled");
6318
6319 instance->max_sectors_per_req = instance->max_num_sge *
6320 SGE_BUFFER_SIZE / 512;
6321 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
6322 instance->max_sectors_per_req = tmp_sectors;
6323
6324 /* Check for valid throttlequeuedepth module parameter */
6325 if (throttlequeuedepth &&
6326 throttlequeuedepth <= instance->max_scsi_cmds)
6327 instance->throttlequeuedepth = throttlequeuedepth;
6328 else
6329 instance->throttlequeuedepth =
6330 MEGASAS_THROTTLE_QUEUE_DEPTH;
6331
6332 if ((resetwaittime < 1) ||
6333 (resetwaittime > MEGASAS_RESET_WAIT_TIME))
6334 resetwaittime = MEGASAS_RESET_WAIT_TIME;
6335
6336 if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT))
6337 scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
6338
6339 /* Launch SR-IOV heartbeat timer */
6340 if (instance->requestorId) {
6341 if (!megasas_sriov_start_heartbeat(instance, 1)) {
6342 megasas_start_timer(instance);
6343 } else {
6344 instance->skip_heartbeat_timer_del = 1;
6345 goto fail_get_ld_pd_list;
6346 }
6347 }
6348
6349 /*
6350 * Create and start watchdog thread which will monitor
6351 * controller state every 1 sec and trigger OCR when
6352 * it enters fault state
6353 */
6354 if (instance->adapter_type != MFI_SERIES)
6355 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
6356 goto fail_start_watchdog;
6357
6358 return 0;
6359
6360 fail_start_watchdog:
6361 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
6362 del_timer_sync(&instance->sriov_heartbeat_timer);
6363 fail_get_ld_pd_list:
6364 instance->instancet->disable_intr(instance);
6365 megasas_destroy_irqs(instance);
6366 fail_init_adapter:
6367 if (instance->msix_vectors)
6368 pci_free_irq_vectors(instance->pdev);
6369 instance->msix_vectors = 0;
6370 fail_alloc_dma_buf:
6371 megasas_free_ctrl_dma_buffers(instance);
6372 megasas_free_ctrl_mem(instance);
6373 fail_ready_state:
6374 iounmap(instance->reg_set);
6375
6376 fail_ioremap:
6377 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6378
6379 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6380 __func__, __LINE__);
6381 return -EINVAL;
6382 }
6383
6384 /**
6385 * megasas_release_mfi - Reverses the FW initialization
6386 * @instance: Adapter soft state
6387 */
6388 static void megasas_release_mfi(struct megasas_instance *instance)
6389 {
6390 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
6391
6392 if (instance->reply_queue)
6393 dma_free_coherent(&instance->pdev->dev, reply_q_sz,
6394 instance->reply_queue, instance->reply_queue_h);
6395
6396 megasas_free_cmds(instance);
6397
6398 iounmap(instance->reg_set);
6399
6400 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6401 }
6402
6403 /**
6404 * megasas_get_seq_num - Gets latest event sequence numbers
6405 * @instance: Adapter soft state
6406 * @eli: FW event log sequence numbers information
6407 *
6408 * FW maintains a log of all events in a non-volatile area. Upper layers would
6409 * usually find out the latest sequence number of the events, the seq number at
6410 * the boot etc. They would "read" all the events below the latest seq number
6411 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
6412 * number), they would subsribe to AEN (asynchronous event notification) and
6413 * wait for the events to happen.
6414 */
6415 static int
6416 megasas_get_seq_num(struct megasas_instance *instance,
6417 struct megasas_evt_log_info *eli)
6418 {
6419 struct megasas_cmd *cmd;
6420 struct megasas_dcmd_frame *dcmd;
6421 struct megasas_evt_log_info *el_info;
6422 dma_addr_t el_info_h = 0;
6423 int ret;
6424
6425 cmd = megasas_get_cmd(instance);
6426
6427 if (!cmd) {
6428 return -ENOMEM;
6429 }
6430
6431 dcmd = &cmd->frame->dcmd;
6432 el_info = dma_alloc_coherent(&instance->pdev->dev,
6433 sizeof(struct megasas_evt_log_info),
6434 &el_info_h, GFP_KERNEL);
6435 if (!el_info) {
6436 megasas_return_cmd(instance, cmd);
6437 return -ENOMEM;
6438 }
6439
6440 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6441
6442 dcmd->cmd = MFI_CMD_DCMD;
6443 dcmd->cmd_status = 0x0;
6444 dcmd->sge_count = 1;
6445 dcmd->flags = MFI_FRAME_DIR_READ;
6446 dcmd->timeout = 0;
6447 dcmd->pad_0 = 0;
6448 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
6449 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
6450
6451 megasas_set_dma_settings(instance, dcmd, el_info_h,
6452 sizeof(struct megasas_evt_log_info));
6453
6454 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
6455 if (ret != DCMD_SUCCESS) {
6456 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6457 __func__, __LINE__);
6458 goto dcmd_failed;
6459 }
6460
6461 /*
6462 * Copy the data back into callers buffer
6463 */
6464 eli->newest_seq_num = el_info->newest_seq_num;
6465 eli->oldest_seq_num = el_info->oldest_seq_num;
6466 eli->clear_seq_num = el_info->clear_seq_num;
6467 eli->shutdown_seq_num = el_info->shutdown_seq_num;
6468 eli->boot_seq_num = el_info->boot_seq_num;
6469
6470 dcmd_failed:
6471 dma_free_coherent(&instance->pdev->dev,
6472 sizeof(struct megasas_evt_log_info),
6473 el_info, el_info_h);
6474
6475 megasas_return_cmd(instance, cmd);
6476
6477 return ret;
6478 }
6479
6480 /**
6481 * megasas_register_aen - Registers for asynchronous event notification
6482 * @instance: Adapter soft state
6483 * @seq_num: The starting sequence number
6484 * @class_locale: Class of the event
6485 *
6486 * This function subscribes for AEN for events beyond the @seq_num. It requests
6487 * to be notified if and only if the event is of type @class_locale
6488 */
6489 static int
6490 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
6491 u32 class_locale_word)
6492 {
6493 int ret_val;
6494 struct megasas_cmd *cmd;
6495 struct megasas_dcmd_frame *dcmd;
6496 union megasas_evt_class_locale curr_aen;
6497 union megasas_evt_class_locale prev_aen;
6498
6499 /*
6500 * If there an AEN pending already (aen_cmd), check if the
6501 * class_locale of that pending AEN is inclusive of the new
6502 * AEN request we currently have. If it is, then we don't have
6503 * to do anything. In other words, whichever events the current
6504 * AEN request is subscribing to, have already been subscribed
6505 * to.
6506 *
6507 * If the old_cmd is _not_ inclusive, then we have to abort
6508 * that command, form a class_locale that is superset of both
6509 * old and current and re-issue to the FW
6510 */
6511
6512 curr_aen.word = class_locale_word;
6513
6514 if (instance->aen_cmd) {
6515
6516 prev_aen.word =
6517 le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]);
6518
6519 if ((curr_aen.members.class < MFI_EVT_CLASS_DEBUG) ||
6520 (curr_aen.members.class > MFI_EVT_CLASS_DEAD)) {
6521 dev_info(&instance->pdev->dev,
6522 "%s %d out of range class %d send by application\n",
6523 __func__, __LINE__, curr_aen.members.class);
6524 return 0;
6525 }
6526
6527 /*
6528 * A class whose enum value is smaller is inclusive of all
6529 * higher values. If a PROGRESS (= -1) was previously
6530 * registered, then a new registration requests for higher
6531 * classes need not be sent to FW. They are automatically
6532 * included.
6533 *
6534 * Locale numbers don't have such hierarchy. They are bitmap
6535 * values
6536 */
6537 if ((prev_aen.members.class <= curr_aen.members.class) &&
6538 !((prev_aen.members.locale & curr_aen.members.locale) ^
6539 curr_aen.members.locale)) {
6540 /*
6541 * Previously issued event registration includes
6542 * current request. Nothing to do.
6543 */
6544 return 0;
6545 } else {
6546 curr_aen.members.locale |= prev_aen.members.locale;
6547
6548 if (prev_aen.members.class < curr_aen.members.class)
6549 curr_aen.members.class = prev_aen.members.class;
6550
6551 instance->aen_cmd->abort_aen = 1;
6552 ret_val = megasas_issue_blocked_abort_cmd(instance,
6553 instance->
6554 aen_cmd, 30);
6555
6556 if (ret_val) {
6557 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort "
6558 "previous AEN command\n");
6559 return ret_val;
6560 }
6561 }
6562 }
6563
6564 cmd = megasas_get_cmd(instance);
6565
6566 if (!cmd)
6567 return -ENOMEM;
6568
6569 dcmd = &cmd->frame->dcmd;
6570
6571 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
6572
6573 /*
6574 * Prepare DCMD for aen registration
6575 */
6576 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6577
6578 dcmd->cmd = MFI_CMD_DCMD;
6579 dcmd->cmd_status = 0x0;
6580 dcmd->sge_count = 1;
6581 dcmd->flags = MFI_FRAME_DIR_READ;
6582 dcmd->timeout = 0;
6583 dcmd->pad_0 = 0;
6584 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
6585 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
6586 dcmd->mbox.w[0] = cpu_to_le32(seq_num);
6587 instance->last_seq_num = seq_num;
6588 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
6589
6590 megasas_set_dma_settings(instance, dcmd, instance->evt_detail_h,
6591 sizeof(struct megasas_evt_detail));
6592
6593 if (instance->aen_cmd != NULL) {
6594 megasas_return_cmd(instance, cmd);
6595 return 0;
6596 }
6597
6598 /*
6599 * Store reference to the cmd used to register for AEN. When an
6600 * application wants us to register for AEN, we have to abort this
6601 * cmd and re-register with a new EVENT LOCALE supplied by that app
6602 */
6603 instance->aen_cmd = cmd;
6604
6605 /*
6606 * Issue the aen registration frame
6607 */
6608 instance->instancet->issue_dcmd(instance, cmd);
6609
6610 return 0;
6611 }
6612
6613 /* megasas_get_target_prop - Send DCMD with below details to firmware.
6614 *
6615 * This DCMD will fetch few properties of LD/system PD defined
6616 * in MR_TARGET_DEV_PROPERTIES. eg. Queue Depth, MDTS value.
6617 *
6618 * DCMD send by drivers whenever new target is added to the OS.
6619 *
6620 * dcmd.opcode - MR_DCMD_DEV_GET_TARGET_PROP
6621 * dcmd.mbox.b[0] - DCMD is to be fired for LD or system PD.
6622 * 0 = system PD, 1 = LD.
6623 * dcmd.mbox.s[1] - TargetID for LD/system PD.
6624 * dcmd.sge IN - Pointer to return MR_TARGET_DEV_PROPERTIES.
6625 *
6626 * @instance: Adapter soft state
6627 * @sdev: OS provided scsi device
6628 *
6629 * Returns 0 on success non-zero on failure.
6630 */
6631 int
6632 megasas_get_target_prop(struct megasas_instance *instance,
6633 struct scsi_device *sdev)
6634 {
6635 int ret;
6636 struct megasas_cmd *cmd;
6637 struct megasas_dcmd_frame *dcmd;
6638 u16 targetId = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) +
6639 sdev->id;
6640
6641 cmd = megasas_get_cmd(instance);
6642
6643 if (!cmd) {
6644 dev_err(&instance->pdev->dev,
6645 "Failed to get cmd %s\n", __func__);
6646 return -ENOMEM;
6647 }
6648
6649 dcmd = &cmd->frame->dcmd;
6650
6651 memset(instance->tgt_prop, 0, sizeof(*instance->tgt_prop));
6652 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6653 dcmd->mbox.b[0] = MEGASAS_IS_LOGICAL(sdev);
6654
6655 dcmd->mbox.s[1] = cpu_to_le16(targetId);
6656 dcmd->cmd = MFI_CMD_DCMD;
6657 dcmd->cmd_status = 0xFF;
6658 dcmd->sge_count = 1;
6659 dcmd->flags = MFI_FRAME_DIR_READ;
6660 dcmd->timeout = 0;
6661 dcmd->pad_0 = 0;
6662 dcmd->data_xfer_len =
6663 cpu_to_le32(sizeof(struct MR_TARGET_PROPERTIES));
6664 dcmd->opcode = cpu_to_le32(MR_DCMD_DRV_GET_TARGET_PROP);
6665
6666 megasas_set_dma_settings(instance, dcmd, instance->tgt_prop_h,
6667 sizeof(struct MR_TARGET_PROPERTIES));
6668
6669 if ((instance->adapter_type != MFI_SERIES) &&
6670 !instance->mask_interrupts)
6671 ret = megasas_issue_blocked_cmd(instance,
6672 cmd, MFI_IO_TIMEOUT_SECS);
6673 else
6674 ret = megasas_issue_polled(instance, cmd);
6675
6676 switch (ret) {
6677 case DCMD_TIMEOUT:
6678 switch (dcmd_timeout_ocr_possible(instance)) {
6679 case INITIATE_OCR:
6680 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
6681 mutex_unlock(&instance->reset_mutex);
6682 megasas_reset_fusion(instance->host,
6683 MFI_IO_TIMEOUT_OCR);
6684 mutex_lock(&instance->reset_mutex);
6685 break;
6686 case KILL_ADAPTER:
6687 megaraid_sas_kill_hba(instance);
6688 break;
6689 case IGNORE_TIMEOUT:
6690 dev_info(&instance->pdev->dev,
6691 "Ignore DCMD timeout: %s %d\n",
6692 __func__, __LINE__);
6693 break;
6694 }
6695 break;
6696
6697 default:
6698 megasas_return_cmd(instance, cmd);
6699 }
6700 if (ret != DCMD_SUCCESS)
6701 dev_err(&instance->pdev->dev,
6702 "return from %s %d return value %d\n",
6703 __func__, __LINE__, ret);
6704
6705 return ret;
6706 }
6707
6708 /**
6709 * megasas_start_aen - Subscribes to AEN during driver load time
6710 * @instance: Adapter soft state
6711 */
6712 static int megasas_start_aen(struct megasas_instance *instance)
6713 {
6714 struct megasas_evt_log_info eli;
6715 union megasas_evt_class_locale class_locale;
6716
6717 /*
6718 * Get the latest sequence number from FW
6719 */
6720 memset(&eli, 0, sizeof(eli));
6721
6722 if (megasas_get_seq_num(instance, &eli))
6723 return -1;
6724
6725 /*
6726 * Register AEN with FW for latest sequence number plus 1
6727 */
6728 class_locale.members.reserved = 0;
6729 class_locale.members.locale = MR_EVT_LOCALE_ALL;
6730 class_locale.members.class = MR_EVT_CLASS_DEBUG;
6731
6732 return megasas_register_aen(instance,
6733 le32_to_cpu(eli.newest_seq_num) + 1,
6734 class_locale.word);
6735 }
6736
6737 /**
6738 * megasas_io_attach - Attaches this driver to SCSI mid-layer
6739 * @instance: Adapter soft state
6740 */
6741 static int megasas_io_attach(struct megasas_instance *instance)
6742 {
6743 struct Scsi_Host *host = instance->host;
6744
6745 /*
6746 * Export parameters required by SCSI mid-layer
6747 */
6748 host->unique_id = instance->unique_id;
6749 host->can_queue = instance->max_scsi_cmds;
6750 host->this_id = instance->init_id;
6751 host->sg_tablesize = instance->max_num_sge;
6752
6753 if (instance->fw_support_ieee)
6754 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
6755
6756 /*
6757 * Check if the module parameter value for max_sectors can be used
6758 */
6759 if (max_sectors && max_sectors < instance->max_sectors_per_req)
6760 instance->max_sectors_per_req = max_sectors;
6761 else {
6762 if (max_sectors) {
6763 if (((instance->pdev->device ==
6764 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
6765 (instance->pdev->device ==
6766 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
6767 (max_sectors <= MEGASAS_MAX_SECTORS)) {
6768 instance->max_sectors_per_req = max_sectors;
6769 } else {
6770 dev_info(&instance->pdev->dev, "max_sectors should be > 0"
6771 "and <= %d (or < 1MB for GEN2 controller)\n",
6772 instance->max_sectors_per_req);
6773 }
6774 }
6775 }
6776
6777 host->max_sectors = instance->max_sectors_per_req;
6778 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
6779 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
6780 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
6781 host->max_lun = MEGASAS_MAX_LUN;
6782 host->max_cmd_len = 16;
6783
6784 /*
6785 * Notify the mid-layer about the new controller
6786 */
6787 if (scsi_add_host(host, &instance->pdev->dev)) {
6788 dev_err(&instance->pdev->dev,
6789 "Failed to add host from %s %d\n",
6790 __func__, __LINE__);
6791 return -ENODEV;
6792 }
6793
6794 return 0;
6795 }
6796
6797 /**
6798 * megasas_set_dma_mask - Set DMA mask for supported controllers
6799 *
6800 * @instance: Adapter soft state
6801 * Description:
6802 *
6803 * For Ventura, driver/FW will operate in 63bit DMA addresses.
6804 *
6805 * For invader-
6806 * By default, driver/FW will operate in 32bit DMA addresses
6807 * for consistent DMA mapping but if 32 bit consistent
6808 * DMA mask fails, driver will try with 63 bit consistent
6809 * mask provided FW is true 63bit DMA capable
6810 *
6811 * For older controllers(Thunderbolt and MFI based adapters)-
6812 * driver/FW will operate in 32 bit consistent DMA addresses.
6813 */
6814 static int
6815 megasas_set_dma_mask(struct megasas_instance *instance)
6816 {
6817 u64 consistent_mask;
6818 struct pci_dev *pdev;
6819 u32 scratch_pad_1;
6820
6821 pdev = instance->pdev;
6822 consistent_mask = (instance->adapter_type >= VENTURA_SERIES) ?
6823 DMA_BIT_MASK(63) : DMA_BIT_MASK(32);
6824
6825 if (IS_DMA64) {
6826 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(63)) &&
6827 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
6828 goto fail_set_dma_mask;
6829
6830 if ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) &&
6831 (dma_set_coherent_mask(&pdev->dev, consistent_mask) &&
6832 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))) {
6833 /*
6834 * If 32 bit DMA mask fails, then try for 64 bit mask
6835 * for FW capable of handling 64 bit DMA.
6836 */
6837 scratch_pad_1 = megasas_readl
6838 (instance, &instance->reg_set->outbound_scratch_pad_1);
6839
6840 if (!(scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET))
6841 goto fail_set_dma_mask;
6842 else if (dma_set_mask_and_coherent(&pdev->dev,
6843 DMA_BIT_MASK(63)))
6844 goto fail_set_dma_mask;
6845 }
6846 } else if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
6847 goto fail_set_dma_mask;
6848
6849 if (pdev->dev.coherent_dma_mask == DMA_BIT_MASK(32))
6850 instance->consistent_mask_64bit = false;
6851 else
6852 instance->consistent_mask_64bit = true;
6853
6854 dev_info(&pdev->dev, "%s bit DMA mask and %s bit consistent mask\n",
6855 ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) ? "63" : "32"),
6856 (instance->consistent_mask_64bit ? "63" : "32"));
6857
6858 return 0;
6859
6860 fail_set_dma_mask:
6861 dev_err(&pdev->dev, "Failed to set DMA mask\n");
6862 return -1;
6863
6864 }
6865
6866 /*
6867 * megasas_set_adapter_type - Set adapter type.
6868 * Supported controllers can be divided in
6869 * different categories-
6870 * enum MR_ADAPTER_TYPE {
6871 * MFI_SERIES = 1,
6872 * THUNDERBOLT_SERIES = 2,
6873 * INVADER_SERIES = 3,
6874 * VENTURA_SERIES = 4,
6875 * AERO_SERIES = 5,
6876 * };
6877 * @instance: Adapter soft state
6878 * return: void
6879 */
6880 static inline void megasas_set_adapter_type(struct megasas_instance *instance)
6881 {
6882 if ((instance->pdev->vendor == PCI_VENDOR_ID_DELL) &&
6883 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5)) {
6884 instance->adapter_type = MFI_SERIES;
6885 } else {
6886 switch (instance->pdev->device) {
6887 case PCI_DEVICE_ID_LSI_AERO_10E1:
6888 case PCI_DEVICE_ID_LSI_AERO_10E2:
6889 case PCI_DEVICE_ID_LSI_AERO_10E5:
6890 case PCI_DEVICE_ID_LSI_AERO_10E6:
6891 instance->adapter_type = AERO_SERIES;
6892 break;
6893 case PCI_DEVICE_ID_LSI_VENTURA:
6894 case PCI_DEVICE_ID_LSI_CRUSADER:
6895 case PCI_DEVICE_ID_LSI_HARPOON:
6896 case PCI_DEVICE_ID_LSI_TOMCAT:
6897 case PCI_DEVICE_ID_LSI_VENTURA_4PORT:
6898 case PCI_DEVICE_ID_LSI_CRUSADER_4PORT:
6899 instance->adapter_type = VENTURA_SERIES;
6900 break;
6901 case PCI_DEVICE_ID_LSI_FUSION:
6902 case PCI_DEVICE_ID_LSI_PLASMA:
6903 instance->adapter_type = THUNDERBOLT_SERIES;
6904 break;
6905 case PCI_DEVICE_ID_LSI_INVADER:
6906 case PCI_DEVICE_ID_LSI_INTRUDER:
6907 case PCI_DEVICE_ID_LSI_INTRUDER_24:
6908 case PCI_DEVICE_ID_LSI_CUTLASS_52:
6909 case PCI_DEVICE_ID_LSI_CUTLASS_53:
6910 case PCI_DEVICE_ID_LSI_FURY:
6911 instance->adapter_type = INVADER_SERIES;
6912 break;
6913 default: /* For all other supported controllers */
6914 instance->adapter_type = MFI_SERIES;
6915 break;
6916 }
6917 }
6918 }
6919
6920 static inline int megasas_alloc_mfi_ctrl_mem(struct megasas_instance *instance)
6921 {
6922 instance->producer = dma_alloc_coherent(&instance->pdev->dev,
6923 sizeof(u32), &instance->producer_h, GFP_KERNEL);
6924 instance->consumer = dma_alloc_coherent(&instance->pdev->dev,
6925 sizeof(u32), &instance->consumer_h, GFP_KERNEL);
6926
6927 if (!instance->producer || !instance->consumer) {
6928 dev_err(&instance->pdev->dev,
6929 "Failed to allocate memory for producer, consumer\n");
6930 return -1;
6931 }
6932
6933 *instance->producer = 0;
6934 *instance->consumer = 0;
6935 return 0;
6936 }
6937
6938 /**
6939 * megasas_alloc_ctrl_mem - Allocate per controller memory for core data
6940 * structures which are not common across MFI
6941 * adapters and fusion adapters.
6942 * For MFI based adapters, allocate producer and
6943 * consumer buffers. For fusion adapters, allocate
6944 * memory for fusion context.
6945 * @instance: Adapter soft state
6946 * return: 0 for SUCCESS
6947 */
6948 static int megasas_alloc_ctrl_mem(struct megasas_instance *instance)
6949 {
6950 instance->reply_map = kcalloc(nr_cpu_ids, sizeof(unsigned int),
6951 GFP_KERNEL);
6952 if (!instance->reply_map)
6953 return -ENOMEM;
6954
6955 switch (instance->adapter_type) {
6956 case MFI_SERIES:
6957 if (megasas_alloc_mfi_ctrl_mem(instance))
6958 goto fail;
6959 break;
6960 case AERO_SERIES:
6961 case VENTURA_SERIES:
6962 case THUNDERBOLT_SERIES:
6963 case INVADER_SERIES:
6964 if (megasas_alloc_fusion_context(instance))
6965 goto fail;
6966 break;
6967 }
6968
6969 return 0;
6970 fail:
6971 kfree(instance->reply_map);
6972 instance->reply_map = NULL;
6973 return -ENOMEM;
6974 }
6975
6976 /*
6977 * megasas_free_ctrl_mem - Free fusion context for fusion adapters and
6978 * producer, consumer buffers for MFI adapters
6979 *
6980 * @instance - Adapter soft instance
6981 *
6982 */
6983 static inline void megasas_free_ctrl_mem(struct megasas_instance *instance)
6984 {
6985 kfree(instance->reply_map);
6986 if (instance->adapter_type == MFI_SERIES) {
6987 if (instance->producer)
6988 dma_free_coherent(&instance->pdev->dev, sizeof(u32),
6989 instance->producer,
6990 instance->producer_h);
6991 if (instance->consumer)
6992 dma_free_coherent(&instance->pdev->dev, sizeof(u32),
6993 instance->consumer,
6994 instance->consumer_h);
6995 } else {
6996 megasas_free_fusion_context(instance);
6997 }
6998 }
6999
7000 /**
7001 * megasas_alloc_ctrl_dma_buffers - Allocate consistent DMA buffers during
7002 * driver load time
7003 *
7004 * @instance- Adapter soft instance
7005 * @return- O for SUCCESS
7006 */
7007 static inline
7008 int megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance)
7009 {
7010 struct pci_dev *pdev = instance->pdev;
7011 struct fusion_context *fusion = instance->ctrl_context;
7012
7013 instance->evt_detail = dma_alloc_coherent(&pdev->dev,
7014 sizeof(struct megasas_evt_detail),
7015 &instance->evt_detail_h, GFP_KERNEL);
7016
7017 if (!instance->evt_detail) {
7018 dev_err(&instance->pdev->dev,
7019 "Failed to allocate event detail buffer\n");
7020 return -ENOMEM;
7021 }
7022
7023 if (fusion) {
7024 fusion->ioc_init_request =
7025 dma_alloc_coherent(&pdev->dev,
7026 sizeof(struct MPI2_IOC_INIT_REQUEST),
7027 &fusion->ioc_init_request_phys,
7028 GFP_KERNEL);
7029
7030 if (!fusion->ioc_init_request) {
7031 dev_err(&pdev->dev,
7032 "Failed to allocate PD list buffer\n");
7033 return -ENOMEM;
7034 }
7035
7036 instance->snapdump_prop = dma_alloc_coherent(&pdev->dev,
7037 sizeof(struct MR_SNAPDUMP_PROPERTIES),
7038 &instance->snapdump_prop_h, GFP_KERNEL);
7039
7040 if (!instance->snapdump_prop)
7041 dev_err(&pdev->dev,
7042 "Failed to allocate snapdump properties buffer\n");
7043
7044 instance->host_device_list_buf = dma_alloc_coherent(&pdev->dev,
7045 HOST_DEVICE_LIST_SZ,
7046 &instance->host_device_list_buf_h,
7047 GFP_KERNEL);
7048
7049 if (!instance->host_device_list_buf) {
7050 dev_err(&pdev->dev,
7051 "Failed to allocate targetid list buffer\n");
7052 return -ENOMEM;
7053 }
7054
7055 }
7056
7057 instance->pd_list_buf =
7058 dma_alloc_coherent(&pdev->dev,
7059 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7060 &instance->pd_list_buf_h, GFP_KERNEL);
7061
7062 if (!instance->pd_list_buf) {
7063 dev_err(&pdev->dev, "Failed to allocate PD list buffer\n");
7064 return -ENOMEM;
7065 }
7066
7067 instance->ctrl_info_buf =
7068 dma_alloc_coherent(&pdev->dev,
7069 sizeof(struct megasas_ctrl_info),
7070 &instance->ctrl_info_buf_h, GFP_KERNEL);
7071
7072 if (!instance->ctrl_info_buf) {
7073 dev_err(&pdev->dev,
7074 "Failed to allocate controller info buffer\n");
7075 return -ENOMEM;
7076 }
7077
7078 instance->ld_list_buf =
7079 dma_alloc_coherent(&pdev->dev,
7080 sizeof(struct MR_LD_LIST),
7081 &instance->ld_list_buf_h, GFP_KERNEL);
7082
7083 if (!instance->ld_list_buf) {
7084 dev_err(&pdev->dev, "Failed to allocate LD list buffer\n");
7085 return -ENOMEM;
7086 }
7087
7088 instance->ld_targetid_list_buf =
7089 dma_alloc_coherent(&pdev->dev,
7090 sizeof(struct MR_LD_TARGETID_LIST),
7091 &instance->ld_targetid_list_buf_h, GFP_KERNEL);
7092
7093 if (!instance->ld_targetid_list_buf) {
7094 dev_err(&pdev->dev,
7095 "Failed to allocate LD targetid list buffer\n");
7096 return -ENOMEM;
7097 }
7098
7099 if (!reset_devices) {
7100 instance->system_info_buf =
7101 dma_alloc_coherent(&pdev->dev,
7102 sizeof(struct MR_DRV_SYSTEM_INFO),
7103 &instance->system_info_h, GFP_KERNEL);
7104 instance->pd_info =
7105 dma_alloc_coherent(&pdev->dev,
7106 sizeof(struct MR_PD_INFO),
7107 &instance->pd_info_h, GFP_KERNEL);
7108 instance->tgt_prop =
7109 dma_alloc_coherent(&pdev->dev,
7110 sizeof(struct MR_TARGET_PROPERTIES),
7111 &instance->tgt_prop_h, GFP_KERNEL);
7112 instance->crash_dump_buf =
7113 dma_alloc_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7114 &instance->crash_dump_h, GFP_KERNEL);
7115
7116 if (!instance->system_info_buf)
7117 dev_err(&instance->pdev->dev,
7118 "Failed to allocate system info buffer\n");
7119
7120 if (!instance->pd_info)
7121 dev_err(&instance->pdev->dev,
7122 "Failed to allocate pd_info buffer\n");
7123
7124 if (!instance->tgt_prop)
7125 dev_err(&instance->pdev->dev,
7126 "Failed to allocate tgt_prop buffer\n");
7127
7128 if (!instance->crash_dump_buf)
7129 dev_err(&instance->pdev->dev,
7130 "Failed to allocate crash dump buffer\n");
7131 }
7132
7133 return 0;
7134 }
7135
7136 /*
7137 * megasas_free_ctrl_dma_buffers - Free consistent DMA buffers allocated
7138 * during driver load time
7139 *
7140 * @instance- Adapter soft instance
7141 *
7142 */
7143 static inline
7144 void megasas_free_ctrl_dma_buffers(struct megasas_instance *instance)
7145 {
7146 struct pci_dev *pdev = instance->pdev;
7147 struct fusion_context *fusion = instance->ctrl_context;
7148
7149 if (instance->evt_detail)
7150 dma_free_coherent(&pdev->dev, sizeof(struct megasas_evt_detail),
7151 instance->evt_detail,
7152 instance->evt_detail_h);
7153
7154 if (fusion && fusion->ioc_init_request)
7155 dma_free_coherent(&pdev->dev,
7156 sizeof(struct MPI2_IOC_INIT_REQUEST),
7157 fusion->ioc_init_request,
7158 fusion->ioc_init_request_phys);
7159
7160 if (instance->pd_list_buf)
7161 dma_free_coherent(&pdev->dev,
7162 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7163 instance->pd_list_buf,
7164 instance->pd_list_buf_h);
7165
7166 if (instance->ld_list_buf)
7167 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_LIST),
7168 instance->ld_list_buf,
7169 instance->ld_list_buf_h);
7170
7171 if (instance->ld_targetid_list_buf)
7172 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_TARGETID_LIST),
7173 instance->ld_targetid_list_buf,
7174 instance->ld_targetid_list_buf_h);
7175
7176 if (instance->ctrl_info_buf)
7177 dma_free_coherent(&pdev->dev, sizeof(struct megasas_ctrl_info),
7178 instance->ctrl_info_buf,
7179 instance->ctrl_info_buf_h);
7180
7181 if (instance->system_info_buf)
7182 dma_free_coherent(&pdev->dev, sizeof(struct MR_DRV_SYSTEM_INFO),
7183 instance->system_info_buf,
7184 instance->system_info_h);
7185
7186 if (instance->pd_info)
7187 dma_free_coherent(&pdev->dev, sizeof(struct MR_PD_INFO),
7188 instance->pd_info, instance->pd_info_h);
7189
7190 if (instance->tgt_prop)
7191 dma_free_coherent(&pdev->dev, sizeof(struct MR_TARGET_PROPERTIES),
7192 instance->tgt_prop, instance->tgt_prop_h);
7193
7194 if (instance->crash_dump_buf)
7195 dma_free_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7196 instance->crash_dump_buf,
7197 instance->crash_dump_h);
7198
7199 if (instance->snapdump_prop)
7200 dma_free_coherent(&pdev->dev,
7201 sizeof(struct MR_SNAPDUMP_PROPERTIES),
7202 instance->snapdump_prop,
7203 instance->snapdump_prop_h);
7204
7205 if (instance->host_device_list_buf)
7206 dma_free_coherent(&pdev->dev,
7207 HOST_DEVICE_LIST_SZ,
7208 instance->host_device_list_buf,
7209 instance->host_device_list_buf_h);
7210
7211 }
7212
7213 /*
7214 * megasas_init_ctrl_params - Initialize controller's instance
7215 * parameters before FW init
7216 * @instance - Adapter soft instance
7217 * @return - void
7218 */
7219 static inline void megasas_init_ctrl_params(struct megasas_instance *instance)
7220 {
7221 instance->fw_crash_state = UNAVAILABLE;
7222
7223 megasas_poll_wait_aen = 0;
7224 instance->issuepend_done = 1;
7225 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
7226
7227 /*
7228 * Initialize locks and queues
7229 */
7230 INIT_LIST_HEAD(&instance->cmd_pool);
7231 INIT_LIST_HEAD(&instance->internal_reset_pending_q);
7232
7233 atomic_set(&instance->fw_outstanding, 0);
7234 atomic64_set(&instance->total_io_count, 0);
7235
7236 init_waitqueue_head(&instance->int_cmd_wait_q);
7237 init_waitqueue_head(&instance->abort_cmd_wait_q);
7238
7239 spin_lock_init(&instance->crashdump_lock);
7240 spin_lock_init(&instance->mfi_pool_lock);
7241 spin_lock_init(&instance->hba_lock);
7242 spin_lock_init(&instance->stream_lock);
7243 spin_lock_init(&instance->completion_lock);
7244
7245 mutex_init(&instance->reset_mutex);
7246
7247 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
7248 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
7249 instance->flag_ieee = 1;
7250
7251 megasas_dbg_lvl = 0;
7252 instance->flag = 0;
7253 instance->unload = 1;
7254 instance->last_time = 0;
7255 instance->disableOnlineCtrlReset = 1;
7256 instance->UnevenSpanSupport = 0;
7257 instance->smp_affinity_enable = smp_affinity_enable ? true : false;
7258 instance->msix_load_balance = false;
7259
7260 if (instance->adapter_type != MFI_SERIES)
7261 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
7262 else
7263 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
7264 }
7265
7266 /**
7267 * megasas_probe_one - PCI hotplug entry point
7268 * @pdev: PCI device structure
7269 * @id: PCI ids of supported hotplugged adapter
7270 */
7271 static int megasas_probe_one(struct pci_dev *pdev,
7272 const struct pci_device_id *id)
7273 {
7274 int rval, pos;
7275 struct Scsi_Host *host;
7276 struct megasas_instance *instance;
7277 u16 control = 0;
7278
7279 switch (pdev->device) {
7280 case PCI_DEVICE_ID_LSI_AERO_10E0:
7281 case PCI_DEVICE_ID_LSI_AERO_10E3:
7282 case PCI_DEVICE_ID_LSI_AERO_10E4:
7283 case PCI_DEVICE_ID_LSI_AERO_10E7:
7284 dev_err(&pdev->dev, "Adapter is in non secure mode\n");
7285 return 1;
7286 case PCI_DEVICE_ID_LSI_AERO_10E1:
7287 case PCI_DEVICE_ID_LSI_AERO_10E5:
7288 dev_info(&pdev->dev, "Adapter is in configurable secure mode\n");
7289 break;
7290 }
7291
7292 /* Reset MSI-X in the kdump kernel */
7293 if (reset_devices) {
7294 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
7295 if (pos) {
7296 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
7297 &control);
7298 if (control & PCI_MSIX_FLAGS_ENABLE) {
7299 dev_info(&pdev->dev, "resetting MSI-X\n");
7300 pci_write_config_word(pdev,
7301 pos + PCI_MSIX_FLAGS,
7302 control &
7303 ~PCI_MSIX_FLAGS_ENABLE);
7304 }
7305 }
7306 }
7307
7308 /*
7309 * PCI prepping: enable device set bus mastering and dma mask
7310 */
7311 rval = pci_enable_device_mem(pdev);
7312
7313 if (rval) {
7314 return rval;
7315 }
7316
7317 pci_set_master(pdev);
7318
7319 host = scsi_host_alloc(&megasas_template,
7320 sizeof(struct megasas_instance));
7321
7322 if (!host) {
7323 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n");
7324 goto fail_alloc_instance;
7325 }
7326
7327 instance = (struct megasas_instance *)host->hostdata;
7328 memset(instance, 0, sizeof(*instance));
7329 atomic_set(&instance->fw_reset_no_pci_access, 0);
7330
7331 /*
7332 * Initialize PCI related and misc parameters
7333 */
7334 instance->pdev = pdev;
7335 instance->host = host;
7336 instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
7337 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
7338
7339 megasas_set_adapter_type(instance);
7340
7341 /*
7342 * Initialize MFI Firmware
7343 */
7344 if (megasas_init_fw(instance))
7345 goto fail_init_mfi;
7346
7347 if (instance->requestorId) {
7348 if (instance->PlasmaFW111) {
7349 instance->vf_affiliation_111 =
7350 dma_alloc_coherent(&pdev->dev,
7351 sizeof(struct MR_LD_VF_AFFILIATION_111),
7352 &instance->vf_affiliation_111_h,
7353 GFP_KERNEL);
7354 if (!instance->vf_affiliation_111)
7355 dev_warn(&pdev->dev, "Can't allocate "
7356 "memory for VF affiliation buffer\n");
7357 } else {
7358 instance->vf_affiliation =
7359 dma_alloc_coherent(&pdev->dev,
7360 (MAX_LOGICAL_DRIVES + 1) *
7361 sizeof(struct MR_LD_VF_AFFILIATION),
7362 &instance->vf_affiliation_h,
7363 GFP_KERNEL);
7364 if (!instance->vf_affiliation)
7365 dev_warn(&pdev->dev, "Can't allocate "
7366 "memory for VF affiliation buffer\n");
7367 }
7368 }
7369
7370 /*
7371 * Store instance in PCI softstate
7372 */
7373 pci_set_drvdata(pdev, instance);
7374
7375 /*
7376 * Add this controller to megasas_mgmt_info structure so that it
7377 * can be exported to management applications
7378 */
7379 megasas_mgmt_info.count++;
7380 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
7381 megasas_mgmt_info.max_index++;
7382
7383 /*
7384 * Register with SCSI mid-layer
7385 */
7386 if (megasas_io_attach(instance))
7387 goto fail_io_attach;
7388
7389 instance->unload = 0;
7390 /*
7391 * Trigger SCSI to scan our drives
7392 */
7393 if (!instance->enable_fw_dev_list ||
7394 (instance->host_device_list_buf->count > 0))
7395 scsi_scan_host(host);
7396
7397 /*
7398 * Initiate AEN (Asynchronous Event Notification)
7399 */
7400 if (megasas_start_aen(instance)) {
7401 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n");
7402 goto fail_start_aen;
7403 }
7404
7405 megasas_setup_debugfs(instance);
7406
7407 /* Get current SR-IOV LD/VF affiliation */
7408 if (instance->requestorId)
7409 megasas_get_ld_vf_affiliation(instance, 1);
7410
7411 return 0;
7412
7413 fail_start_aen:
7414 fail_io_attach:
7415 megasas_mgmt_info.count--;
7416 megasas_mgmt_info.max_index--;
7417 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
7418
7419 instance->instancet->disable_intr(instance);
7420 megasas_destroy_irqs(instance);
7421
7422 if (instance->adapter_type != MFI_SERIES)
7423 megasas_release_fusion(instance);
7424 else
7425 megasas_release_mfi(instance);
7426 if (instance->msix_vectors)
7427 pci_free_irq_vectors(instance->pdev);
7428 fail_init_mfi:
7429 scsi_host_put(host);
7430 fail_alloc_instance:
7431 pci_disable_device(pdev);
7432
7433 return -ENODEV;
7434 }
7435
7436 /**
7437 * megasas_flush_cache - Requests FW to flush all its caches
7438 * @instance: Adapter soft state
7439 */
7440 static void megasas_flush_cache(struct megasas_instance *instance)
7441 {
7442 struct megasas_cmd *cmd;
7443 struct megasas_dcmd_frame *dcmd;
7444
7445 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7446 return;
7447
7448 cmd = megasas_get_cmd(instance);
7449
7450 if (!cmd)
7451 return;
7452
7453 dcmd = &cmd->frame->dcmd;
7454
7455 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7456
7457 dcmd->cmd = MFI_CMD_DCMD;
7458 dcmd->cmd_status = 0x0;
7459 dcmd->sge_count = 0;
7460 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7461 dcmd->timeout = 0;
7462 dcmd->pad_0 = 0;
7463 dcmd->data_xfer_len = 0;
7464 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
7465 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
7466
7467 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7468 != DCMD_SUCCESS) {
7469 dev_err(&instance->pdev->dev,
7470 "return from %s %d\n", __func__, __LINE__);
7471 return;
7472 }
7473
7474 megasas_return_cmd(instance, cmd);
7475 }
7476
7477 /**
7478 * megasas_shutdown_controller - Instructs FW to shutdown the controller
7479 * @instance: Adapter soft state
7480 * @opcode: Shutdown/Hibernate
7481 */
7482 static void megasas_shutdown_controller(struct megasas_instance *instance,
7483 u32 opcode)
7484 {
7485 struct megasas_cmd *cmd;
7486 struct megasas_dcmd_frame *dcmd;
7487
7488 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7489 return;
7490
7491 cmd = megasas_get_cmd(instance);
7492
7493 if (!cmd)
7494 return;
7495
7496 if (instance->aen_cmd)
7497 megasas_issue_blocked_abort_cmd(instance,
7498 instance->aen_cmd, MFI_IO_TIMEOUT_SECS);
7499 if (instance->map_update_cmd)
7500 megasas_issue_blocked_abort_cmd(instance,
7501 instance->map_update_cmd, MFI_IO_TIMEOUT_SECS);
7502 if (instance->jbod_seq_cmd)
7503 megasas_issue_blocked_abort_cmd(instance,
7504 instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS);
7505
7506 dcmd = &cmd->frame->dcmd;
7507
7508 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7509
7510 dcmd->cmd = MFI_CMD_DCMD;
7511 dcmd->cmd_status = 0x0;
7512 dcmd->sge_count = 0;
7513 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7514 dcmd->timeout = 0;
7515 dcmd->pad_0 = 0;
7516 dcmd->data_xfer_len = 0;
7517 dcmd->opcode = cpu_to_le32(opcode);
7518
7519 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7520 != DCMD_SUCCESS) {
7521 dev_err(&instance->pdev->dev,
7522 "return from %s %d\n", __func__, __LINE__);
7523 return;
7524 }
7525
7526 megasas_return_cmd(instance, cmd);
7527 }
7528
7529 #ifdef CONFIG_PM
7530 /**
7531 * megasas_suspend - driver suspend entry point
7532 * @pdev: PCI device structure
7533 * @state: PCI power state to suspend routine
7534 */
7535 static int
7536 megasas_suspend(struct pci_dev *pdev, pm_message_t state)
7537 {
7538 struct megasas_instance *instance;
7539
7540 instance = pci_get_drvdata(pdev);
7541
7542 if (!instance)
7543 return 0;
7544
7545 instance->unload = 1;
7546
7547 dev_info(&pdev->dev, "%s is called\n", __func__);
7548
7549 /* Shutdown SR-IOV heartbeat timer */
7550 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7551 del_timer_sync(&instance->sriov_heartbeat_timer);
7552
7553 /* Stop the FW fault detection watchdog */
7554 if (instance->adapter_type != MFI_SERIES)
7555 megasas_fusion_stop_watchdog(instance);
7556
7557 megasas_flush_cache(instance);
7558 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
7559
7560 /* cancel the delayed work if this work still in queue */
7561 if (instance->ev != NULL) {
7562 struct megasas_aen_event *ev = instance->ev;
7563 cancel_delayed_work_sync(&ev->hotplug_work);
7564 instance->ev = NULL;
7565 }
7566
7567 tasklet_kill(&instance->isr_tasklet);
7568
7569 pci_set_drvdata(instance->pdev, instance);
7570 instance->instancet->disable_intr(instance);
7571
7572 megasas_destroy_irqs(instance);
7573
7574 if (instance->msix_vectors)
7575 pci_free_irq_vectors(instance->pdev);
7576
7577 pci_save_state(pdev);
7578 pci_disable_device(pdev);
7579
7580 pci_set_power_state(pdev, pci_choose_state(pdev, state));
7581
7582 return 0;
7583 }
7584
7585 /**
7586 * megasas_resume- driver resume entry point
7587 * @pdev: PCI device structure
7588 */
7589 static int
7590 megasas_resume(struct pci_dev *pdev)
7591 {
7592 int rval;
7593 struct Scsi_Host *host;
7594 struct megasas_instance *instance;
7595 int irq_flags = PCI_IRQ_LEGACY;
7596
7597 instance = pci_get_drvdata(pdev);
7598
7599 if (!instance)
7600 return 0;
7601
7602 host = instance->host;
7603 pci_set_power_state(pdev, PCI_D0);
7604 pci_enable_wake(pdev, PCI_D0, 0);
7605 pci_restore_state(pdev);
7606
7607 dev_info(&pdev->dev, "%s is called\n", __func__);
7608 /*
7609 * PCI prepping: enable device set bus mastering and dma mask
7610 */
7611 rval = pci_enable_device_mem(pdev);
7612
7613 if (rval) {
7614 dev_err(&pdev->dev, "Enable device failed\n");
7615 return rval;
7616 }
7617
7618 pci_set_master(pdev);
7619
7620 /*
7621 * We expect the FW state to be READY
7622 */
7623 if (megasas_transition_to_ready(instance, 0))
7624 goto fail_ready_state;
7625
7626 if (megasas_set_dma_mask(instance))
7627 goto fail_set_dma_mask;
7628
7629 /*
7630 * Initialize MFI Firmware
7631 */
7632
7633 atomic_set(&instance->fw_outstanding, 0);
7634 atomic_set(&instance->ldio_outstanding, 0);
7635
7636 /* Now re-enable MSI-X */
7637 if (instance->msix_vectors) {
7638 irq_flags = PCI_IRQ_MSIX;
7639 if (instance->smp_affinity_enable)
7640 irq_flags |= PCI_IRQ_AFFINITY;
7641 }
7642 rval = pci_alloc_irq_vectors(instance->pdev, 1,
7643 instance->msix_vectors ?
7644 instance->msix_vectors : 1, irq_flags);
7645 if (rval < 0)
7646 goto fail_reenable_msix;
7647
7648 megasas_setup_reply_map(instance);
7649
7650 if (instance->adapter_type != MFI_SERIES) {
7651 megasas_reset_reply_desc(instance);
7652 if (megasas_ioc_init_fusion(instance)) {
7653 megasas_free_cmds(instance);
7654 megasas_free_cmds_fusion(instance);
7655 goto fail_init_mfi;
7656 }
7657 if (!megasas_get_map_info(instance))
7658 megasas_sync_map_info(instance);
7659 } else {
7660 *instance->producer = 0;
7661 *instance->consumer = 0;
7662 if (megasas_issue_init_mfi(instance))
7663 goto fail_init_mfi;
7664 }
7665
7666 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS)
7667 goto fail_init_mfi;
7668
7669 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
7670 (unsigned long)instance);
7671
7672 if (instance->msix_vectors ?
7673 megasas_setup_irqs_msix(instance, 0) :
7674 megasas_setup_irqs_ioapic(instance))
7675 goto fail_init_mfi;
7676
7677 if (instance->adapter_type != MFI_SERIES)
7678 megasas_setup_irq_poll(instance);
7679
7680 /* Re-launch SR-IOV heartbeat timer */
7681 if (instance->requestorId) {
7682 if (!megasas_sriov_start_heartbeat(instance, 0))
7683 megasas_start_timer(instance);
7684 else {
7685 instance->skip_heartbeat_timer_del = 1;
7686 goto fail_init_mfi;
7687 }
7688 }
7689
7690 instance->instancet->enable_intr(instance);
7691 megasas_setup_jbod_map(instance);
7692 instance->unload = 0;
7693
7694 /*
7695 * Initiate AEN (Asynchronous Event Notification)
7696 */
7697 if (megasas_start_aen(instance))
7698 dev_err(&instance->pdev->dev, "Start AEN failed\n");
7699
7700 /* Re-launch FW fault watchdog */
7701 if (instance->adapter_type != MFI_SERIES)
7702 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
7703 goto fail_start_watchdog;
7704
7705 return 0;
7706
7707 fail_start_watchdog:
7708 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7709 del_timer_sync(&instance->sriov_heartbeat_timer);
7710 fail_init_mfi:
7711 megasas_free_ctrl_dma_buffers(instance);
7712 megasas_free_ctrl_mem(instance);
7713 scsi_host_put(host);
7714
7715 fail_reenable_msix:
7716 fail_set_dma_mask:
7717 fail_ready_state:
7718
7719 pci_disable_device(pdev);
7720
7721 return -ENODEV;
7722 }
7723 #else
7724 #define megasas_suspend NULL
7725 #define megasas_resume NULL
7726 #endif
7727
7728 static inline int
7729 megasas_wait_for_adapter_operational(struct megasas_instance *instance)
7730 {
7731 int wait_time = MEGASAS_RESET_WAIT_TIME * 2;
7732 int i;
7733 u8 adp_state;
7734
7735 for (i = 0; i < wait_time; i++) {
7736 adp_state = atomic_read(&instance->adprecovery);
7737 if ((adp_state == MEGASAS_HBA_OPERATIONAL) ||
7738 (adp_state == MEGASAS_HW_CRITICAL_ERROR))
7739 break;
7740
7741 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL))
7742 dev_notice(&instance->pdev->dev, "waiting for controller reset to finish\n");
7743
7744 msleep(1000);
7745 }
7746
7747 if (adp_state != MEGASAS_HBA_OPERATIONAL) {
7748 dev_info(&instance->pdev->dev,
7749 "%s HBA failed to become operational, adp_state %d\n",
7750 __func__, adp_state);
7751 return 1;
7752 }
7753
7754 return 0;
7755 }
7756
7757 /**
7758 * megasas_detach_one - PCI hot"un"plug entry point
7759 * @pdev: PCI device structure
7760 */
7761 static void megasas_detach_one(struct pci_dev *pdev)
7762 {
7763 int i;
7764 struct Scsi_Host *host;
7765 struct megasas_instance *instance;
7766 struct fusion_context *fusion;
7767 u32 pd_seq_map_sz;
7768
7769 instance = pci_get_drvdata(pdev);
7770
7771 if (!instance)
7772 return;
7773
7774 host = instance->host;
7775 fusion = instance->ctrl_context;
7776
7777 /* Shutdown SR-IOV heartbeat timer */
7778 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7779 del_timer_sync(&instance->sriov_heartbeat_timer);
7780
7781 /* Stop the FW fault detection watchdog */
7782 if (instance->adapter_type != MFI_SERIES)
7783 megasas_fusion_stop_watchdog(instance);
7784
7785 if (instance->fw_crash_state != UNAVAILABLE)
7786 megasas_free_host_crash_buffer(instance);
7787 scsi_remove_host(instance->host);
7788 instance->unload = 1;
7789
7790 if (megasas_wait_for_adapter_operational(instance))
7791 goto skip_firing_dcmds;
7792
7793 megasas_flush_cache(instance);
7794 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7795
7796 skip_firing_dcmds:
7797 /* cancel the delayed work if this work still in queue*/
7798 if (instance->ev != NULL) {
7799 struct megasas_aen_event *ev = instance->ev;
7800 cancel_delayed_work_sync(&ev->hotplug_work);
7801 instance->ev = NULL;
7802 }
7803
7804 /* cancel all wait events */
7805 wake_up_all(&instance->int_cmd_wait_q);
7806
7807 tasklet_kill(&instance->isr_tasklet);
7808
7809 /*
7810 * Take the instance off the instance array. Note that we will not
7811 * decrement the max_index. We let this array be sparse array
7812 */
7813 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
7814 if (megasas_mgmt_info.instance[i] == instance) {
7815 megasas_mgmt_info.count--;
7816 megasas_mgmt_info.instance[i] = NULL;
7817
7818 break;
7819 }
7820 }
7821
7822 instance->instancet->disable_intr(instance);
7823
7824 megasas_destroy_irqs(instance);
7825
7826 if (instance->msix_vectors)
7827 pci_free_irq_vectors(instance->pdev);
7828
7829 if (instance->adapter_type >= VENTURA_SERIES) {
7830 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i)
7831 kfree(fusion->stream_detect_by_ld[i]);
7832 kfree(fusion->stream_detect_by_ld);
7833 fusion->stream_detect_by_ld = NULL;
7834 }
7835
7836
7837 if (instance->adapter_type != MFI_SERIES) {
7838 megasas_release_fusion(instance);
7839 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
7840 (sizeof(struct MR_PD_CFG_SEQ) *
7841 (MAX_PHYSICAL_DEVICES - 1));
7842 for (i = 0; i < 2 ; i++) {
7843 if (fusion->ld_map[i])
7844 dma_free_coherent(&instance->pdev->dev,
7845 fusion->max_map_sz,
7846 fusion->ld_map[i],
7847 fusion->ld_map_phys[i]);
7848 if (fusion->ld_drv_map[i]) {
7849 if (is_vmalloc_addr(fusion->ld_drv_map[i]))
7850 vfree(fusion->ld_drv_map[i]);
7851 else
7852 free_pages((ulong)fusion->ld_drv_map[i],
7853 fusion->drv_map_pages);
7854 }
7855
7856 if (fusion->pd_seq_sync[i])
7857 dma_free_coherent(&instance->pdev->dev,
7858 pd_seq_map_sz,
7859 fusion->pd_seq_sync[i],
7860 fusion->pd_seq_phys[i]);
7861 }
7862 } else {
7863 megasas_release_mfi(instance);
7864 }
7865
7866 if (instance->vf_affiliation)
7867 dma_free_coherent(&pdev->dev, (MAX_LOGICAL_DRIVES + 1) *
7868 sizeof(struct MR_LD_VF_AFFILIATION),
7869 instance->vf_affiliation,
7870 instance->vf_affiliation_h);
7871
7872 if (instance->vf_affiliation_111)
7873 dma_free_coherent(&pdev->dev,
7874 sizeof(struct MR_LD_VF_AFFILIATION_111),
7875 instance->vf_affiliation_111,
7876 instance->vf_affiliation_111_h);
7877
7878 if (instance->hb_host_mem)
7879 dma_free_coherent(&pdev->dev, sizeof(struct MR_CTRL_HB_HOST_MEM),
7880 instance->hb_host_mem,
7881 instance->hb_host_mem_h);
7882
7883 megasas_free_ctrl_dma_buffers(instance);
7884
7885 megasas_free_ctrl_mem(instance);
7886
7887 megasas_destroy_debugfs(instance);
7888
7889 scsi_host_put(host);
7890
7891 pci_disable_device(pdev);
7892 }
7893
7894 /**
7895 * megasas_shutdown - Shutdown entry point
7896 * @device: Generic device structure
7897 */
7898 static void megasas_shutdown(struct pci_dev *pdev)
7899 {
7900 struct megasas_instance *instance = pci_get_drvdata(pdev);
7901
7902 if (!instance)
7903 return;
7904
7905 instance->unload = 1;
7906
7907 if (megasas_wait_for_adapter_operational(instance))
7908 goto skip_firing_dcmds;
7909
7910 megasas_flush_cache(instance);
7911 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7912
7913 skip_firing_dcmds:
7914 instance->instancet->disable_intr(instance);
7915 megasas_destroy_irqs(instance);
7916
7917 if (instance->msix_vectors)
7918 pci_free_irq_vectors(instance->pdev);
7919 }
7920
7921 /**
7922 * megasas_mgmt_open - char node "open" entry point
7923 */
7924 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
7925 {
7926 /*
7927 * Allow only those users with admin rights
7928 */
7929 if (!capable(CAP_SYS_ADMIN))
7930 return -EACCES;
7931
7932 return 0;
7933 }
7934
7935 /**
7936 * megasas_mgmt_fasync - Async notifier registration from applications
7937 *
7938 * This function adds the calling process to a driver global queue. When an
7939 * event occurs, SIGIO will be sent to all processes in this queue.
7940 */
7941 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
7942 {
7943 int rc;
7944
7945 mutex_lock(&megasas_async_queue_mutex);
7946
7947 rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
7948
7949 mutex_unlock(&megasas_async_queue_mutex);
7950
7951 if (rc >= 0) {
7952 /* For sanity check when we get ioctl */
7953 filep->private_data = filep;
7954 return 0;
7955 }
7956
7957 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
7958
7959 return rc;
7960 }
7961
7962 /**
7963 * megasas_mgmt_poll - char node "poll" entry point
7964 * */
7965 static __poll_t megasas_mgmt_poll(struct file *file, poll_table *wait)
7966 {
7967 __poll_t mask;
7968 unsigned long flags;
7969
7970 poll_wait(file, &megasas_poll_wait, wait);
7971 spin_lock_irqsave(&poll_aen_lock, flags);
7972 if (megasas_poll_wait_aen)
7973 mask = (EPOLLIN | EPOLLRDNORM);
7974 else
7975 mask = 0;
7976 megasas_poll_wait_aen = 0;
7977 spin_unlock_irqrestore(&poll_aen_lock, flags);
7978 return mask;
7979 }
7980
7981 /*
7982 * megasas_set_crash_dump_params_ioctl:
7983 * Send CRASH_DUMP_MODE DCMD to all controllers
7984 * @cmd: MFI command frame
7985 */
7986
7987 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd)
7988 {
7989 struct megasas_instance *local_instance;
7990 int i, error = 0;
7991 int crash_support;
7992
7993 crash_support = cmd->frame->dcmd.mbox.w[0];
7994
7995 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
7996 local_instance = megasas_mgmt_info.instance[i];
7997 if (local_instance && local_instance->crash_dump_drv_support) {
7998 if ((atomic_read(&local_instance->adprecovery) ==
7999 MEGASAS_HBA_OPERATIONAL) &&
8000 !megasas_set_crash_dump_params(local_instance,
8001 crash_support)) {
8002 local_instance->crash_dump_app_support =
8003 crash_support;
8004 dev_info(&local_instance->pdev->dev,
8005 "Application firmware crash "
8006 "dump mode set success\n");
8007 error = 0;
8008 } else {
8009 dev_info(&local_instance->pdev->dev,
8010 "Application firmware crash "
8011 "dump mode set failed\n");
8012 error = -1;
8013 }
8014 }
8015 }
8016 return error;
8017 }
8018
8019 /**
8020 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
8021 * @instance: Adapter soft state
8022 * @argp: User's ioctl packet
8023 */
8024 static int
8025 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
8026 struct megasas_iocpacket __user * user_ioc,
8027 struct megasas_iocpacket *ioc)
8028 {
8029 struct megasas_sge64 *kern_sge64 = NULL;
8030 struct megasas_sge32 *kern_sge32 = NULL;
8031 struct megasas_cmd *cmd;
8032 void *kbuff_arr[MAX_IOCTL_SGE];
8033 dma_addr_t buf_handle = 0;
8034 int error = 0, i;
8035 void *sense = NULL;
8036 dma_addr_t sense_handle;
8037 unsigned long *sense_ptr;
8038 u32 opcode = 0;
8039
8040 memset(kbuff_arr, 0, sizeof(kbuff_arr));
8041
8042 if (ioc->sge_count > MAX_IOCTL_SGE) {
8043 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] > max limit [%d]\n",
8044 ioc->sge_count, MAX_IOCTL_SGE);
8045 return -EINVAL;
8046 }
8047
8048 if ((ioc->frame.hdr.cmd >= MFI_CMD_OP_COUNT) ||
8049 ((ioc->frame.hdr.cmd == MFI_CMD_NVME) &&
8050 !instance->support_nvme_passthru) ||
8051 ((ioc->frame.hdr.cmd == MFI_CMD_TOOLBOX) &&
8052 !instance->support_pci_lane_margining)) {
8053 dev_err(&instance->pdev->dev,
8054 "Received invalid ioctl command 0x%x\n",
8055 ioc->frame.hdr.cmd);
8056 return -ENOTSUPP;
8057 }
8058
8059 cmd = megasas_get_cmd(instance);
8060 if (!cmd) {
8061 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n");
8062 return -ENOMEM;
8063 }
8064
8065 /*
8066 * User's IOCTL packet has 2 frames (maximum). Copy those two
8067 * frames into our cmd's frames. cmd->frame's context will get
8068 * overwritten when we copy from user's frames. So set that value
8069 * alone separately
8070 */
8071 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
8072 cmd->frame->hdr.context = cpu_to_le32(cmd->index);
8073 cmd->frame->hdr.pad_0 = 0;
8074
8075 cmd->frame->hdr.flags &= (~MFI_FRAME_IEEE);
8076
8077 if (instance->consistent_mask_64bit)
8078 cmd->frame->hdr.flags |= cpu_to_le16((MFI_FRAME_SGL64 |
8079 MFI_FRAME_SENSE64));
8080 else
8081 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_SGL64 |
8082 MFI_FRAME_SENSE64));
8083
8084 if (cmd->frame->hdr.cmd == MFI_CMD_DCMD)
8085 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
8086
8087 if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
8088 mutex_lock(&instance->reset_mutex);
8089 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) {
8090 megasas_return_cmd(instance, cmd);
8091 mutex_unlock(&instance->reset_mutex);
8092 return -1;
8093 }
8094 mutex_unlock(&instance->reset_mutex);
8095 }
8096
8097 if (opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) {
8098 error = megasas_set_crash_dump_params_ioctl(cmd);
8099 megasas_return_cmd(instance, cmd);
8100 return error;
8101 }
8102
8103 /*
8104 * The management interface between applications and the fw uses
8105 * MFI frames. E.g, RAID configuration changes, LD property changes
8106 * etc are accomplishes through different kinds of MFI frames. The
8107 * driver needs to care only about substituting user buffers with
8108 * kernel buffers in SGLs. The location of SGL is embedded in the
8109 * struct iocpacket itself.
8110 */
8111 if (instance->consistent_mask_64bit)
8112 kern_sge64 = (struct megasas_sge64 *)
8113 ((unsigned long)cmd->frame + ioc->sgl_off);
8114 else
8115 kern_sge32 = (struct megasas_sge32 *)
8116 ((unsigned long)cmd->frame + ioc->sgl_off);
8117
8118 /*
8119 * For each user buffer, create a mirror buffer and copy in
8120 */
8121 for (i = 0; i < ioc->sge_count; i++) {
8122 if (!ioc->sgl[i].iov_len)
8123 continue;
8124
8125 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
8126 ioc->sgl[i].iov_len,
8127 &buf_handle, GFP_KERNEL);
8128 if (!kbuff_arr[i]) {
8129 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc "
8130 "kernel SGL buffer for IOCTL\n");
8131 error = -ENOMEM;
8132 goto out;
8133 }
8134
8135 /*
8136 * We don't change the dma_coherent_mask, so
8137 * dma_alloc_coherent only returns 32bit addresses
8138 */
8139 if (instance->consistent_mask_64bit) {
8140 kern_sge64[i].phys_addr = cpu_to_le64(buf_handle);
8141 kern_sge64[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8142 } else {
8143 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
8144 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8145 }
8146
8147 /*
8148 * We created a kernel buffer corresponding to the
8149 * user buffer. Now copy in from the user buffer
8150 */
8151 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
8152 (u32) (ioc->sgl[i].iov_len))) {
8153 error = -EFAULT;
8154 goto out;
8155 }
8156 }
8157
8158 if (ioc->sense_len) {
8159 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
8160 &sense_handle, GFP_KERNEL);
8161 if (!sense) {
8162 error = -ENOMEM;
8163 goto out;
8164 }
8165
8166 sense_ptr =
8167 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
8168 if (instance->consistent_mask_64bit)
8169 *sense_ptr = cpu_to_le64(sense_handle);
8170 else
8171 *sense_ptr = cpu_to_le32(sense_handle);
8172 }
8173
8174 /*
8175 * Set the sync_cmd flag so that the ISR knows not to complete this
8176 * cmd to the SCSI mid-layer
8177 */
8178 cmd->sync_cmd = 1;
8179 if (megasas_issue_blocked_cmd(instance, cmd, 0) == DCMD_NOT_FIRED) {
8180 cmd->sync_cmd = 0;
8181 dev_err(&instance->pdev->dev,
8182 "return -EBUSY from %s %d cmd 0x%x opcode 0x%x cmd->cmd_status_drv 0x%x\n",
8183 __func__, __LINE__, cmd->frame->hdr.cmd, opcode,
8184 cmd->cmd_status_drv);
8185 return -EBUSY;
8186 }
8187
8188 cmd->sync_cmd = 0;
8189
8190 if (instance->unload == 1) {
8191 dev_info(&instance->pdev->dev, "Driver unload is in progress "
8192 "don't submit data to application\n");
8193 goto out;
8194 }
8195 /*
8196 * copy out the kernel buffers to user buffers
8197 */
8198 for (i = 0; i < ioc->sge_count; i++) {
8199 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
8200 ioc->sgl[i].iov_len)) {
8201 error = -EFAULT;
8202 goto out;
8203 }
8204 }
8205
8206 /*
8207 * copy out the sense
8208 */
8209 if (ioc->sense_len) {
8210 /*
8211 * sense_ptr points to the location that has the user
8212 * sense buffer address
8213 */
8214 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
8215 ioc->sense_off);
8216
8217 if (copy_to_user((void __user *)((unsigned long)
8218 get_unaligned((unsigned long *)sense_ptr)),
8219 sense, ioc->sense_len)) {
8220 dev_err(&instance->pdev->dev, "Failed to copy out to user "
8221 "sense data\n");
8222 error = -EFAULT;
8223 goto out;
8224 }
8225 }
8226
8227 /*
8228 * copy the status codes returned by the fw
8229 */
8230 if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
8231 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
8232 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n");
8233 error = -EFAULT;
8234 }
8235
8236 out:
8237 if (sense) {
8238 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
8239 sense, sense_handle);
8240 }
8241
8242 for (i = 0; i < ioc->sge_count; i++) {
8243 if (kbuff_arr[i]) {
8244 if (instance->consistent_mask_64bit)
8245 dma_free_coherent(&instance->pdev->dev,
8246 le32_to_cpu(kern_sge64[i].length),
8247 kbuff_arr[i],
8248 le64_to_cpu(kern_sge64[i].phys_addr));
8249 else
8250 dma_free_coherent(&instance->pdev->dev,
8251 le32_to_cpu(kern_sge32[i].length),
8252 kbuff_arr[i],
8253 le32_to_cpu(kern_sge32[i].phys_addr));
8254 kbuff_arr[i] = NULL;
8255 }
8256 }
8257
8258 megasas_return_cmd(instance, cmd);
8259 return error;
8260 }
8261
8262 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
8263 {
8264 struct megasas_iocpacket __user *user_ioc =
8265 (struct megasas_iocpacket __user *)arg;
8266 struct megasas_iocpacket *ioc;
8267 struct megasas_instance *instance;
8268 int error;
8269
8270 ioc = memdup_user(user_ioc, sizeof(*ioc));
8271 if (IS_ERR(ioc))
8272 return PTR_ERR(ioc);
8273
8274 instance = megasas_lookup_instance(ioc->host_no);
8275 if (!instance) {
8276 error = -ENODEV;
8277 goto out_kfree_ioc;
8278 }
8279
8280 /* Block ioctls in VF mode */
8281 if (instance->requestorId && !allow_vf_ioctls) {
8282 error = -ENODEV;
8283 goto out_kfree_ioc;
8284 }
8285
8286 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8287 dev_err(&instance->pdev->dev, "Controller in crit error\n");
8288 error = -ENODEV;
8289 goto out_kfree_ioc;
8290 }
8291
8292 if (instance->unload == 1) {
8293 error = -ENODEV;
8294 goto out_kfree_ioc;
8295 }
8296
8297 if (down_interruptible(&instance->ioctl_sem)) {
8298 error = -ERESTARTSYS;
8299 goto out_kfree_ioc;
8300 }
8301
8302 if (megasas_wait_for_adapter_operational(instance)) {
8303 error = -ENODEV;
8304 goto out_up;
8305 }
8306
8307 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
8308 out_up:
8309 up(&instance->ioctl_sem);
8310
8311 out_kfree_ioc:
8312 kfree(ioc);
8313 return error;
8314 }
8315
8316 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
8317 {
8318 struct megasas_instance *instance;
8319 struct megasas_aen aen;
8320 int error;
8321
8322 if (file->private_data != file) {
8323 printk(KERN_DEBUG "megasas: fasync_helper was not "
8324 "called first\n");
8325 return -EINVAL;
8326 }
8327
8328 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
8329 return -EFAULT;
8330
8331 instance = megasas_lookup_instance(aen.host_no);
8332
8333 if (!instance)
8334 return -ENODEV;
8335
8336 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8337 return -ENODEV;
8338 }
8339
8340 if (instance->unload == 1) {
8341 return -ENODEV;
8342 }
8343
8344 if (megasas_wait_for_adapter_operational(instance))
8345 return -ENODEV;
8346
8347 mutex_lock(&instance->reset_mutex);
8348 error = megasas_register_aen(instance, aen.seq_num,
8349 aen.class_locale_word);
8350 mutex_unlock(&instance->reset_mutex);
8351 return error;
8352 }
8353
8354 /**
8355 * megasas_mgmt_ioctl - char node ioctl entry point
8356 */
8357 static long
8358 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
8359 {
8360 switch (cmd) {
8361 case MEGASAS_IOC_FIRMWARE:
8362 return megasas_mgmt_ioctl_fw(file, arg);
8363
8364 case MEGASAS_IOC_GET_AEN:
8365 return megasas_mgmt_ioctl_aen(file, arg);
8366 }
8367
8368 return -ENOTTY;
8369 }
8370
8371 #ifdef CONFIG_COMPAT
8372 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
8373 {
8374 struct compat_megasas_iocpacket __user *cioc =
8375 (struct compat_megasas_iocpacket __user *)arg;
8376 struct megasas_iocpacket __user *ioc =
8377 compat_alloc_user_space(sizeof(struct megasas_iocpacket));
8378 int i;
8379 int error = 0;
8380 compat_uptr_t ptr;
8381 u32 local_sense_off;
8382 u32 local_sense_len;
8383 u32 user_sense_off;
8384
8385 if (clear_user(ioc, sizeof(*ioc)))
8386 return -EFAULT;
8387
8388 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
8389 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
8390 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
8391 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
8392 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
8393 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
8394 return -EFAULT;
8395
8396 /*
8397 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
8398 * sense_len is not null, so prepare the 64bit value under
8399 * the same condition.
8400 */
8401 if (get_user(local_sense_off, &ioc->sense_off) ||
8402 get_user(local_sense_len, &ioc->sense_len) ||
8403 get_user(user_sense_off, &cioc->sense_off))
8404 return -EFAULT;
8405
8406 if (local_sense_off != user_sense_off)
8407 return -EINVAL;
8408
8409 if (local_sense_len) {
8410 void __user **sense_ioc_ptr =
8411 (void __user **)((u8 *)((unsigned long)&ioc->frame.raw) + local_sense_off);
8412 compat_uptr_t *sense_cioc_ptr =
8413 (compat_uptr_t *)(((unsigned long)&cioc->frame.raw) + user_sense_off);
8414 if (get_user(ptr, sense_cioc_ptr) ||
8415 put_user(compat_ptr(ptr), sense_ioc_ptr))
8416 return -EFAULT;
8417 }
8418
8419 for (i = 0; i < MAX_IOCTL_SGE; i++) {
8420 if (get_user(ptr, &cioc->sgl[i].iov_base) ||
8421 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
8422 copy_in_user(&ioc->sgl[i].iov_len,
8423 &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
8424 return -EFAULT;
8425 }
8426
8427 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);
8428
8429 if (copy_in_user(&cioc->frame.hdr.cmd_status,
8430 &ioc->frame.hdr.cmd_status, sizeof(u8))) {
8431 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
8432 return -EFAULT;
8433 }
8434 return error;
8435 }
8436
8437 static long
8438 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
8439 unsigned long arg)
8440 {
8441 switch (cmd) {
8442 case MEGASAS_IOC_FIRMWARE32:
8443 return megasas_mgmt_compat_ioctl_fw(file, arg);
8444 case MEGASAS_IOC_GET_AEN:
8445 return megasas_mgmt_ioctl_aen(file, arg);
8446 }
8447
8448 return -ENOTTY;
8449 }
8450 #endif
8451
8452 /*
8453 * File operations structure for management interface
8454 */
8455 static const struct file_operations megasas_mgmt_fops = {
8456 .owner = THIS_MODULE,
8457 .open = megasas_mgmt_open,
8458 .fasync = megasas_mgmt_fasync,
8459 .unlocked_ioctl = megasas_mgmt_ioctl,
8460 .poll = megasas_mgmt_poll,
8461 #ifdef CONFIG_COMPAT
8462 .compat_ioctl = megasas_mgmt_compat_ioctl,
8463 #endif
8464 .llseek = noop_llseek,
8465 };
8466
8467 /*
8468 * PCI hotplug support registration structure
8469 */
8470 static struct pci_driver megasas_pci_driver = {
8471
8472 .name = "megaraid_sas",
8473 .id_table = megasas_pci_table,
8474 .probe = megasas_probe_one,
8475 .remove = megasas_detach_one,
8476 .suspend = megasas_suspend,
8477 .resume = megasas_resume,
8478 .shutdown = megasas_shutdown,
8479 };
8480
8481 /*
8482 * Sysfs driver attributes
8483 */
8484 static ssize_t version_show(struct device_driver *dd, char *buf)
8485 {
8486 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
8487 MEGASAS_VERSION);
8488 }
8489 static DRIVER_ATTR_RO(version);
8490
8491 static ssize_t release_date_show(struct device_driver *dd, char *buf)
8492 {
8493 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
8494 MEGASAS_RELDATE);
8495 }
8496 static DRIVER_ATTR_RO(release_date);
8497
8498 static ssize_t support_poll_for_event_show(struct device_driver *dd, char *buf)
8499 {
8500 return sprintf(buf, "%u\n", support_poll_for_event);
8501 }
8502 static DRIVER_ATTR_RO(support_poll_for_event);
8503
8504 static ssize_t support_device_change_show(struct device_driver *dd, char *buf)
8505 {
8506 return sprintf(buf, "%u\n", support_device_change);
8507 }
8508 static DRIVER_ATTR_RO(support_device_change);
8509
8510 static ssize_t dbg_lvl_show(struct device_driver *dd, char *buf)
8511 {
8512 return sprintf(buf, "%u\n", megasas_dbg_lvl);
8513 }
8514
8515 static ssize_t dbg_lvl_store(struct device_driver *dd, const char *buf,
8516 size_t count)
8517 {
8518 int retval = count;
8519
8520 if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) {
8521 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
8522 retval = -EINVAL;
8523 }
8524 return retval;
8525 }
8526 static DRIVER_ATTR_RW(dbg_lvl);
8527
8528 static ssize_t
8529 support_nvme_encapsulation_show(struct device_driver *dd, char *buf)
8530 {
8531 return sprintf(buf, "%u\n", support_nvme_encapsulation);
8532 }
8533
8534 static DRIVER_ATTR_RO(support_nvme_encapsulation);
8535
8536 static ssize_t
8537 support_pci_lane_margining_show(struct device_driver *dd, char *buf)
8538 {
8539 return sprintf(buf, "%u\n", support_pci_lane_margining);
8540 }
8541
8542 static DRIVER_ATTR_RO(support_pci_lane_margining);
8543
8544 static inline void megasas_remove_scsi_device(struct scsi_device *sdev)
8545 {
8546 sdev_printk(KERN_INFO, sdev, "SCSI device is removed\n");
8547 scsi_remove_device(sdev);
8548 scsi_device_put(sdev);
8549 }
8550
8551 /**
8552 * megasas_update_device_list - Update the PD and LD device list from FW
8553 * after an AEN event notification
8554 * @instance: Adapter soft state
8555 * @event_type: Indicates type of event (PD or LD event)
8556 *
8557 * @return: Success or failure
8558 *
8559 * Issue DCMDs to Firmware to update the internal device list in driver.
8560 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
8561 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
8562 */
8563 static
8564 int megasas_update_device_list(struct megasas_instance *instance,
8565 int event_type)
8566 {
8567 int dcmd_ret = DCMD_SUCCESS;
8568
8569 if (instance->enable_fw_dev_list) {
8570 dcmd_ret = megasas_host_device_list_query(instance, false);
8571 if (dcmd_ret != DCMD_SUCCESS)
8572 goto out;
8573 } else {
8574 if (event_type & SCAN_PD_CHANNEL) {
8575 dcmd_ret = megasas_get_pd_list(instance);
8576
8577 if (dcmd_ret != DCMD_SUCCESS)
8578 goto out;
8579 }
8580
8581 if (event_type & SCAN_VD_CHANNEL) {
8582 if (!instance->requestorId ||
8583 (instance->requestorId &&
8584 megasas_get_ld_vf_affiliation(instance, 0))) {
8585 dcmd_ret = megasas_ld_list_query(instance,
8586 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST);
8587 if (dcmd_ret != DCMD_SUCCESS)
8588 goto out;
8589 }
8590 }
8591 }
8592
8593 out:
8594 return dcmd_ret;
8595 }
8596
8597 /**
8598 * megasas_add_remove_devices - Add/remove devices to SCSI mid-layer
8599 * after an AEN event notification
8600 * @instance: Adapter soft state
8601 * @scan_type: Indicates type of devices (PD/LD) to add
8602 * @return void
8603 */
8604 static
8605 void megasas_add_remove_devices(struct megasas_instance *instance,
8606 int scan_type)
8607 {
8608 int i, j;
8609 u16 pd_index = 0;
8610 u16 ld_index = 0;
8611 u16 channel = 0, id = 0;
8612 struct Scsi_Host *host;
8613 struct scsi_device *sdev1;
8614 struct MR_HOST_DEVICE_LIST *targetid_list = NULL;
8615 struct MR_HOST_DEVICE_LIST_ENTRY *targetid_entry = NULL;
8616
8617 host = instance->host;
8618
8619 if (instance->enable_fw_dev_list) {
8620 targetid_list = instance->host_device_list_buf;
8621 for (i = 0; i < targetid_list->count; i++) {
8622 targetid_entry = &targetid_list->host_device_list[i];
8623 if (targetid_entry->flags.u.bits.is_sys_pd) {
8624 channel = le16_to_cpu(targetid_entry->target_id) /
8625 MEGASAS_MAX_DEV_PER_CHANNEL;
8626 id = le16_to_cpu(targetid_entry->target_id) %
8627 MEGASAS_MAX_DEV_PER_CHANNEL;
8628 } else {
8629 channel = MEGASAS_MAX_PD_CHANNELS +
8630 (le16_to_cpu(targetid_entry->target_id) /
8631 MEGASAS_MAX_DEV_PER_CHANNEL);
8632 id = le16_to_cpu(targetid_entry->target_id) %
8633 MEGASAS_MAX_DEV_PER_CHANNEL;
8634 }
8635 sdev1 = scsi_device_lookup(host, channel, id, 0);
8636 if (!sdev1) {
8637 scsi_add_device(host, channel, id, 0);
8638 } else {
8639 scsi_device_put(sdev1);
8640 }
8641 }
8642 }
8643
8644 if (scan_type & SCAN_PD_CHANNEL) {
8645 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
8646 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8647 pd_index = i * MEGASAS_MAX_DEV_PER_CHANNEL + j;
8648 sdev1 = scsi_device_lookup(host, i, j, 0);
8649 if (instance->pd_list[pd_index].driveState ==
8650 MR_PD_STATE_SYSTEM) {
8651 if (!sdev1)
8652 scsi_add_device(host, i, j, 0);
8653 else
8654 scsi_device_put(sdev1);
8655 } else {
8656 if (sdev1)
8657 megasas_remove_scsi_device(sdev1);
8658 }
8659 }
8660 }
8661 }
8662
8663 if (scan_type & SCAN_VD_CHANNEL) {
8664 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
8665 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8666 ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
8667 sdev1 = scsi_device_lookup(host,
8668 MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8669 if (instance->ld_ids[ld_index] != 0xff) {
8670 if (!sdev1)
8671 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8672 else
8673 scsi_device_put(sdev1);
8674 } else {
8675 if (sdev1)
8676 megasas_remove_scsi_device(sdev1);
8677 }
8678 }
8679 }
8680 }
8681
8682 }
8683
8684 static void
8685 megasas_aen_polling(struct work_struct *work)
8686 {
8687 struct megasas_aen_event *ev =
8688 container_of(work, struct megasas_aen_event, hotplug_work.work);
8689 struct megasas_instance *instance = ev->instance;
8690 union megasas_evt_class_locale class_locale;
8691 int event_type = 0;
8692 u32 seq_num;
8693 int error;
8694 u8 dcmd_ret = DCMD_SUCCESS;
8695
8696 if (!instance) {
8697 printk(KERN_ERR "invalid instance!\n");
8698 kfree(ev);
8699 return;
8700 }
8701
8702 /* Don't run the event workqueue thread if OCR is running */
8703 mutex_lock(&instance->reset_mutex);
8704
8705 instance->ev = NULL;
8706 if (instance->evt_detail) {
8707 megasas_decode_evt(instance);
8708
8709 switch (le32_to_cpu(instance->evt_detail->code)) {
8710
8711 case MR_EVT_PD_INSERTED:
8712 case MR_EVT_PD_REMOVED:
8713 event_type = SCAN_PD_CHANNEL;
8714 break;
8715
8716 case MR_EVT_LD_OFFLINE:
8717 case MR_EVT_CFG_CLEARED:
8718 case MR_EVT_LD_DELETED:
8719 case MR_EVT_LD_CREATED:
8720 event_type = SCAN_VD_CHANNEL;
8721 break;
8722
8723 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
8724 case MR_EVT_FOREIGN_CFG_IMPORTED:
8725 case MR_EVT_LD_STATE_CHANGE:
8726 event_type = SCAN_PD_CHANNEL | SCAN_VD_CHANNEL;
8727 dev_info(&instance->pdev->dev, "scanning for scsi%d...\n",
8728 instance->host->host_no);
8729 break;
8730
8731 case MR_EVT_CTRL_PROP_CHANGED:
8732 dcmd_ret = megasas_get_ctrl_info(instance);
8733 if (dcmd_ret == DCMD_SUCCESS &&
8734 instance->snapdump_wait_time) {
8735 megasas_get_snapdump_properties(instance);
8736 dev_info(&instance->pdev->dev,
8737 "Snap dump wait time\t: %d\n",
8738 instance->snapdump_wait_time);
8739 }
8740 break;
8741 default:
8742 event_type = 0;
8743 break;
8744 }
8745 } else {
8746 dev_err(&instance->pdev->dev, "invalid evt_detail!\n");
8747 mutex_unlock(&instance->reset_mutex);
8748 kfree(ev);
8749 return;
8750 }
8751
8752 if (event_type)
8753 dcmd_ret = megasas_update_device_list(instance, event_type);
8754
8755 mutex_unlock(&instance->reset_mutex);
8756
8757 if (event_type && dcmd_ret == DCMD_SUCCESS)
8758 megasas_add_remove_devices(instance, event_type);
8759
8760 if (dcmd_ret == DCMD_SUCCESS)
8761 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
8762 else
8763 seq_num = instance->last_seq_num;
8764
8765 /* Register AEN with FW for latest sequence number plus 1 */
8766 class_locale.members.reserved = 0;
8767 class_locale.members.locale = MR_EVT_LOCALE_ALL;
8768 class_locale.members.class = MR_EVT_CLASS_DEBUG;
8769
8770 if (instance->aen_cmd != NULL) {
8771 kfree(ev);
8772 return;
8773 }
8774
8775 mutex_lock(&instance->reset_mutex);
8776 error = megasas_register_aen(instance, seq_num,
8777 class_locale.word);
8778 if (error)
8779 dev_err(&instance->pdev->dev,
8780 "register aen failed error %x\n", error);
8781
8782 mutex_unlock(&instance->reset_mutex);
8783 kfree(ev);
8784 }
8785
8786 /**
8787 * megasas_init - Driver load entry point
8788 */
8789 static int __init megasas_init(void)
8790 {
8791 int rval;
8792
8793 /*
8794 * Booted in kdump kernel, minimize memory footprints by
8795 * disabling few features
8796 */
8797 if (reset_devices) {
8798 msix_vectors = 1;
8799 rdpq_enable = 0;
8800 dual_qdepth_disable = 1;
8801 }
8802
8803 /*
8804 * Announce driver version and other information
8805 */
8806 pr_info("megasas: %s\n", MEGASAS_VERSION);
8807
8808 spin_lock_init(&poll_aen_lock);
8809
8810 support_poll_for_event = 2;
8811 support_device_change = 1;
8812 support_nvme_encapsulation = true;
8813 support_pci_lane_margining = true;
8814
8815 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
8816
8817 /*
8818 * Register character device node
8819 */
8820 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
8821
8822 if (rval < 0) {
8823 printk(KERN_DEBUG "megasas: failed to open device node\n");
8824 return rval;
8825 }
8826
8827 megasas_mgmt_majorno = rval;
8828
8829 megasas_init_debugfs();
8830
8831 /*
8832 * Register ourselves as PCI hotplug module
8833 */
8834 rval = pci_register_driver(&megasas_pci_driver);
8835
8836 if (rval) {
8837 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n");
8838 goto err_pcidrv;
8839 }
8840
8841 if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
8842 (event_log_level > MFI_EVT_CLASS_DEAD)) {
8843 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");
8844 event_log_level = MFI_EVT_CLASS_CRITICAL;
8845 }
8846
8847 rval = driver_create_file(&megasas_pci_driver.driver,
8848 &driver_attr_version);
8849 if (rval)
8850 goto err_dcf_attr_ver;
8851
8852 rval = driver_create_file(&megasas_pci_driver.driver,
8853 &driver_attr_release_date);
8854 if (rval)
8855 goto err_dcf_rel_date;
8856
8857 rval = driver_create_file(&megasas_pci_driver.driver,
8858 &driver_attr_support_poll_for_event);
8859 if (rval)
8860 goto err_dcf_support_poll_for_event;
8861
8862 rval = driver_create_file(&megasas_pci_driver.driver,
8863 &driver_attr_dbg_lvl);
8864 if (rval)
8865 goto err_dcf_dbg_lvl;
8866 rval = driver_create_file(&megasas_pci_driver.driver,
8867 &driver_attr_support_device_change);
8868 if (rval)
8869 goto err_dcf_support_device_change;
8870
8871 rval = driver_create_file(&megasas_pci_driver.driver,
8872 &driver_attr_support_nvme_encapsulation);
8873 if (rval)
8874 goto err_dcf_support_nvme_encapsulation;
8875
8876 rval = driver_create_file(&megasas_pci_driver.driver,
8877 &driver_attr_support_pci_lane_margining);
8878 if (rval)
8879 goto err_dcf_support_pci_lane_margining;
8880
8881 return rval;
8882
8883 err_dcf_support_pci_lane_margining:
8884 driver_remove_file(&megasas_pci_driver.driver,
8885 &driver_attr_support_nvme_encapsulation);
8886
8887 err_dcf_support_nvme_encapsulation:
8888 driver_remove_file(&megasas_pci_driver.driver,
8889 &driver_attr_support_device_change);
8890
8891 err_dcf_support_device_change:
8892 driver_remove_file(&megasas_pci_driver.driver,
8893 &driver_attr_dbg_lvl);
8894 err_dcf_dbg_lvl:
8895 driver_remove_file(&megasas_pci_driver.driver,
8896 &driver_attr_support_poll_for_event);
8897 err_dcf_support_poll_for_event:
8898 driver_remove_file(&megasas_pci_driver.driver,
8899 &driver_attr_release_date);
8900 err_dcf_rel_date:
8901 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
8902 err_dcf_attr_ver:
8903 pci_unregister_driver(&megasas_pci_driver);
8904 err_pcidrv:
8905 megasas_exit_debugfs();
8906 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
8907 return rval;
8908 }
8909
8910 /**
8911 * megasas_exit - Driver unload entry point
8912 */
8913 static void __exit megasas_exit(void)
8914 {
8915 driver_remove_file(&megasas_pci_driver.driver,
8916 &driver_attr_dbg_lvl);
8917 driver_remove_file(&megasas_pci_driver.driver,
8918 &driver_attr_support_poll_for_event);
8919 driver_remove_file(&megasas_pci_driver.driver,
8920 &driver_attr_support_device_change);
8921 driver_remove_file(&megasas_pci_driver.driver,
8922 &driver_attr_release_date);
8923 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
8924 driver_remove_file(&megasas_pci_driver.driver,
8925 &driver_attr_support_nvme_encapsulation);
8926 driver_remove_file(&megasas_pci_driver.driver,
8927 &driver_attr_support_pci_lane_margining);
8928
8929 pci_unregister_driver(&megasas_pci_driver);
8930 megasas_exit_debugfs();
8931 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
8932 }
8933
8934 module_init(megasas_init);
8935 module_exit(megasas_exit);
Linux with added FPC-III support