Version:  2.0.40 2.2.26 2.4.37 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7

Linux/drivers/scsi/megaraid/megaraid_sas_base.c

  1 /*
  2  *  Linux MegaRAID driver for SAS based RAID controllers
  3  *
  4  *  Copyright (c) 2003-2013  LSI Corporation
  5  *  Copyright (c) 2013-2014  Avago Technologies
  6  *
  7  *  This program is free software; you can redistribute it and/or
  8  *  modify it under the terms of the GNU General Public License
  9  *  as published by the Free Software Foundation; either version 2
 10  *  of the License, or (at your option) any later version.
 11  *
 12  *  This program is distributed in the hope that it will be useful,
 13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 15  *  GNU General Public License for more details.
 16  *
 17  *  You should have received a copy of the GNU General Public License
 18  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 19  *
 20  *  Authors: Avago Technologies
 21  *           Sreenivas Bagalkote
 22  *           Sumant Patro
 23  *           Bo Yang
 24  *           Adam Radford
 25  *           Kashyap Desai <kashyap.desai@avagotech.com>
 26  *           Sumit Saxena <sumit.saxena@avagotech.com>
 27  *
 28  *  Send feedback to: megaraidlinux.pdl@avagotech.com
 29  *
 30  *  Mail to: Avago Technologies, 350 West Trimble Road, Building 90,
 31  *  San Jose, California 95131
 32  */
 33 
 34 #include <linux/kernel.h>
 35 #include <linux/types.h>
 36 #include <linux/pci.h>
 37 #include <linux/list.h>
 38 #include <linux/moduleparam.h>
 39 #include <linux/module.h>
 40 #include <linux/spinlock.h>
 41 #include <linux/interrupt.h>
 42 #include <linux/delay.h>
 43 #include <linux/uio.h>
 44 #include <linux/slab.h>
 45 #include <asm/uaccess.h>
 46 #include <linux/fs.h>
 47 #include <linux/compat.h>
 48 #include <linux/blkdev.h>
 49 #include <linux/mutex.h>
 50 #include <linux/poll.h>
 51 
 52 #include <scsi/scsi.h>
 53 #include <scsi/scsi_cmnd.h>
 54 #include <scsi/scsi_device.h>
 55 #include <scsi/scsi_host.h>
 56 #include <scsi/scsi_tcq.h>
 57 #include "megaraid_sas_fusion.h"
 58 #include "megaraid_sas.h"
 59 
 60 /*
 61  * Number of sectors per IO command
 62  * Will be set in megasas_init_mfi if user does not provide
 63  */
 64 static unsigned int max_sectors;
 65 module_param_named(max_sectors, max_sectors, int, 0);
 66 MODULE_PARM_DESC(max_sectors,
 67         "Maximum number of sectors per IO command");
 68 
 69 static int msix_disable;
 70 module_param(msix_disable, int, S_IRUGO);
 71 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0");
 72 
 73 static unsigned int msix_vectors;
 74 module_param(msix_vectors, int, S_IRUGO);
 75 MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW");
 76 
 77 static int allow_vf_ioctls;
 78 module_param(allow_vf_ioctls, int, S_IRUGO);
 79 MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0");
 80 
 81 static unsigned int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH;
 82 module_param(throttlequeuedepth, int, S_IRUGO);
 83 MODULE_PARM_DESC(throttlequeuedepth,
 84         "Adapter queue depth when throttled due to I/O timeout. Default: 16");
 85 
 86 unsigned int resetwaittime = MEGASAS_RESET_WAIT_TIME;
 87 module_param(resetwaittime, int, S_IRUGO);
 88 MODULE_PARM_DESC(resetwaittime, "Wait time in seconds after I/O timeout "
 89                  "before resetting adapter. Default: 180");
 90 
 91 int smp_affinity_enable = 1;
 92 module_param(smp_affinity_enable, int, S_IRUGO);
 93 MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disbale Default: enable(1)");
 94 
 95 int rdpq_enable = 1;
 96 module_param(rdpq_enable, int, S_IRUGO);
 97 MODULE_PARM_DESC(rdpq_enable, " Allocate reply queue in chunks for large queue depth enable/disable Default: disable(0)");
 98 
 99 unsigned int dual_qdepth_disable;
100 module_param(dual_qdepth_disable, int, S_IRUGO);
101 MODULE_PARM_DESC(dual_qdepth_disable, "Disable dual queue depth feature. Default: 0");
102 
103 unsigned int scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
104 module_param(scmd_timeout, int, S_IRUGO);
105 MODULE_PARM_DESC(scmd_timeout, "scsi command timeout (10-90s), default 90s. See megasas_reset_timer.");
106 
107 MODULE_LICENSE("GPL");
108 MODULE_VERSION(MEGASAS_VERSION);
109 MODULE_AUTHOR("megaraidlinux.pdl@avagotech.com");
110 MODULE_DESCRIPTION("Avago MegaRAID SAS Driver");
111 
112 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
113 static int megasas_get_pd_list(struct megasas_instance *instance);
114 static int megasas_ld_list_query(struct megasas_instance *instance,
115                                  u8 query_type);
116 static int megasas_issue_init_mfi(struct megasas_instance *instance);
117 static int megasas_register_aen(struct megasas_instance *instance,
118                                 u32 seq_num, u32 class_locale_word);
119 static int
120 megasas_get_pd_info(struct megasas_instance *instance, u16 device_id);
121 /*
122  * PCI ID table for all supported controllers
123  */
124 static struct pci_device_id megasas_pci_table[] = {
125 
126         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
127         /* xscale IOP */
128         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
129         /* ppc IOP */
130         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
131         /* ppc IOP */
132         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
133         /* gen2*/
134         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
135         /* gen2*/
136         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
137         /* skinny*/
138         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
139         /* skinny*/
140         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
141         /* xscale IOP, vega */
142         {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
143         /* xscale IOP */
144         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
145         /* Fusion */
146         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)},
147         /* Plasma */
148         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
149         /* Invader */
150         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
151         /* Fury */
152         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER)},
153         /* Intruder */
154         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER_24)},
155         /* Intruder 24 port*/
156         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_52)},
157         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_53)},
158         {}
159 };
160 
161 MODULE_DEVICE_TABLE(pci, megasas_pci_table);
162 
163 static int megasas_mgmt_majorno;
164 struct megasas_mgmt_info megasas_mgmt_info;
165 static struct fasync_struct *megasas_async_queue;
166 static DEFINE_MUTEX(megasas_async_queue_mutex);
167 
168 static int megasas_poll_wait_aen;
169 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
170 static u32 support_poll_for_event;
171 u32 megasas_dbg_lvl;
172 static u32 support_device_change;
173 
174 /* define lock for aen poll */
175 spinlock_t poll_aen_lock;
176 
177 void
178 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
179                      u8 alt_status);
180 static u32
181 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs);
182 static int
183 megasas_adp_reset_gen2(struct megasas_instance *instance,
184                        struct megasas_register_set __iomem *reg_set);
185 static irqreturn_t megasas_isr(int irq, void *devp);
186 static u32
187 megasas_init_adapter_mfi(struct megasas_instance *instance);
188 u32
189 megasas_build_and_issue_cmd(struct megasas_instance *instance,
190                             struct scsi_cmnd *scmd);
191 static void megasas_complete_cmd_dpc(unsigned long instance_addr);
192 void
193 megasas_release_fusion(struct megasas_instance *instance);
194 int
195 megasas_ioc_init_fusion(struct megasas_instance *instance);
196 void
197 megasas_free_cmds_fusion(struct megasas_instance *instance);
198 u8
199 megasas_get_map_info(struct megasas_instance *instance);
200 int
201 megasas_sync_map_info(struct megasas_instance *instance);
202 int
203 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
204         int seconds);
205 void megasas_reset_reply_desc(struct megasas_instance *instance);
206 void megasas_fusion_ocr_wq(struct work_struct *work);
207 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
208                                          int initial);
209 int megasas_check_mpio_paths(struct megasas_instance *instance,
210                              struct scsi_cmnd *scmd);
211 
212 int
213 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
214 {
215         instance->instancet->fire_cmd(instance,
216                 cmd->frame_phys_addr, 0, instance->reg_set);
217         return 0;
218 }
219 
220 /**
221  * megasas_get_cmd -    Get a command from the free pool
222  * @instance:           Adapter soft state
223  *
224  * Returns a free command from the pool
225  */
226 struct megasas_cmd *megasas_get_cmd(struct megasas_instance
227                                                   *instance)
228 {
229         unsigned long flags;
230         struct megasas_cmd *cmd = NULL;
231 
232         spin_lock_irqsave(&instance->mfi_pool_lock, flags);
233 
234         if (!list_empty(&instance->cmd_pool)) {
235                 cmd = list_entry((&instance->cmd_pool)->next,
236                                  struct megasas_cmd, list);
237                 list_del_init(&cmd->list);
238         } else {
239                 dev_err(&instance->pdev->dev, "Command pool empty!\n");
240         }
241 
242         spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
243         return cmd;
244 }
245 
246 /**
247  * megasas_return_cmd - Return a cmd to free command pool
248  * @instance:           Adapter soft state
249  * @cmd:                Command packet to be returned to free command pool
250  */
251 inline void
252 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
253 {
254         unsigned long flags;
255         u32 blk_tags;
256         struct megasas_cmd_fusion *cmd_fusion;
257         struct fusion_context *fusion = instance->ctrl_context;
258 
259         /* This flag is used only for fusion adapter.
260          * Wait for Interrupt for Polled mode DCMD
261          */
262         if (cmd->flags & DRV_DCMD_POLLED_MODE)
263                 return;
264 
265         spin_lock_irqsave(&instance->mfi_pool_lock, flags);
266 
267         if (fusion) {
268                 blk_tags = instance->max_scsi_cmds + cmd->index;
269                 cmd_fusion = fusion->cmd_list[blk_tags];
270                 megasas_return_cmd_fusion(instance, cmd_fusion);
271         }
272         cmd->scmd = NULL;
273         cmd->frame_count = 0;
274         cmd->flags = 0;
275         if (!fusion && reset_devices)
276                 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
277         list_add(&cmd->list, (&instance->cmd_pool)->next);
278 
279         spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
280 
281 }
282 
283 static const char *
284 format_timestamp(uint32_t timestamp)
285 {
286         static char buffer[32];
287 
288         if ((timestamp & 0xff000000) == 0xff000000)
289                 snprintf(buffer, sizeof(buffer), "boot + %us", timestamp &
290                 0x00ffffff);
291         else
292                 snprintf(buffer, sizeof(buffer), "%us", timestamp);
293         return buffer;
294 }
295 
296 static const char *
297 format_class(int8_t class)
298 {
299         static char buffer[6];
300 
301         switch (class) {
302         case MFI_EVT_CLASS_DEBUG:
303                 return "debug";
304         case MFI_EVT_CLASS_PROGRESS:
305                 return "progress";
306         case MFI_EVT_CLASS_INFO:
307                 return "info";
308         case MFI_EVT_CLASS_WARNING:
309                 return "WARN";
310         case MFI_EVT_CLASS_CRITICAL:
311                 return "CRIT";
312         case MFI_EVT_CLASS_FATAL:
313                 return "FATAL";
314         case MFI_EVT_CLASS_DEAD:
315                 return "DEAD";
316         default:
317                 snprintf(buffer, sizeof(buffer), "%d", class);
318                 return buffer;
319         }
320 }
321 
322 /**
323   * megasas_decode_evt: Decode FW AEN event and print critical event
324   * for information.
325   * @instance:                  Adapter soft state
326   */
327 static void
328 megasas_decode_evt(struct megasas_instance *instance)
329 {
330         struct megasas_evt_detail *evt_detail = instance->evt_detail;
331         union megasas_evt_class_locale class_locale;
332         class_locale.word = le32_to_cpu(evt_detail->cl.word);
333 
334         if (class_locale.members.class >= MFI_EVT_CLASS_CRITICAL)
335                 dev_info(&instance->pdev->dev, "%d (%s/0x%04x/%s) - %s\n",
336                         le32_to_cpu(evt_detail->seq_num),
337                         format_timestamp(le32_to_cpu(evt_detail->time_stamp)),
338                         (class_locale.members.locale),
339                         format_class(class_locale.members.class),
340                         evt_detail->description);
341 }
342 
343 /**
344 *       The following functions are defined for xscale
345 *       (deviceid : 1064R, PERC5) controllers
346 */
347 
348 /**
349  * megasas_enable_intr_xscale - Enables interrupts
350  * @regs:                       MFI register set
351  */
352 static inline void
353 megasas_enable_intr_xscale(struct megasas_instance *instance)
354 {
355         struct megasas_register_set __iomem *regs;
356 
357         regs = instance->reg_set;
358         writel(0, &(regs)->outbound_intr_mask);
359 
360         /* Dummy readl to force pci flush */
361         readl(&regs->outbound_intr_mask);
362 }
363 
364 /**
365  * megasas_disable_intr_xscale -Disables interrupt
366  * @regs:                       MFI register set
367  */
368 static inline void
369 megasas_disable_intr_xscale(struct megasas_instance *instance)
370 {
371         struct megasas_register_set __iomem *regs;
372         u32 mask = 0x1f;
373 
374         regs = instance->reg_set;
375         writel(mask, &regs->outbound_intr_mask);
376         /* Dummy readl to force pci flush */
377         readl(&regs->outbound_intr_mask);
378 }
379 
380 /**
381  * megasas_read_fw_status_reg_xscale - returns the current FW status value
382  * @regs:                       MFI register set
383  */
384 static u32
385 megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs)
386 {
387         return readl(&(regs)->outbound_msg_0);
388 }
389 /**
390  * megasas_clear_interrupt_xscale -     Check & clear interrupt
391  * @regs:                               MFI register set
392  */
393 static int
394 megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs)
395 {
396         u32 status;
397         u32 mfiStatus = 0;
398 
399         /*
400          * Check if it is our interrupt
401          */
402         status = readl(&regs->outbound_intr_status);
403 
404         if (status & MFI_OB_INTR_STATUS_MASK)
405                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
406         if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
407                 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
408 
409         /*
410          * Clear the interrupt by writing back the same value
411          */
412         if (mfiStatus)
413                 writel(status, &regs->outbound_intr_status);
414 
415         /* Dummy readl to force pci flush */
416         readl(&regs->outbound_intr_status);
417 
418         return mfiStatus;
419 }
420 
421 /**
422  * megasas_fire_cmd_xscale -    Sends command to the FW
423  * @frame_phys_addr :           Physical address of cmd
424  * @frame_count :               Number of frames for the command
425  * @regs :                      MFI register set
426  */
427 static inline void
428 megasas_fire_cmd_xscale(struct megasas_instance *instance,
429                 dma_addr_t frame_phys_addr,
430                 u32 frame_count,
431                 struct megasas_register_set __iomem *regs)
432 {
433         unsigned long flags;
434 
435         spin_lock_irqsave(&instance->hba_lock, flags);
436         writel((frame_phys_addr >> 3)|(frame_count),
437                &(regs)->inbound_queue_port);
438         spin_unlock_irqrestore(&instance->hba_lock, flags);
439 }
440 
441 /**
442  * megasas_adp_reset_xscale -  For controller reset
443  * @regs:                              MFI register set
444  */
445 static int
446 megasas_adp_reset_xscale(struct megasas_instance *instance,
447         struct megasas_register_set __iomem *regs)
448 {
449         u32 i;
450         u32 pcidata;
451 
452         writel(MFI_ADP_RESET, &regs->inbound_doorbell);
453 
454         for (i = 0; i < 3; i++)
455                 msleep(1000); /* sleep for 3 secs */
456         pcidata  = 0;
457         pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
458         dev_notice(&instance->pdev->dev, "pcidata = %x\n", pcidata);
459         if (pcidata & 0x2) {
460                 dev_notice(&instance->pdev->dev, "mfi 1068 offset read=%x\n", pcidata);
461                 pcidata &= ~0x2;
462                 pci_write_config_dword(instance->pdev,
463                                 MFI_1068_PCSR_OFFSET, pcidata);
464 
465                 for (i = 0; i < 2; i++)
466                         msleep(1000); /* need to wait 2 secs again */
467 
468                 pcidata  = 0;
469                 pci_read_config_dword(instance->pdev,
470                                 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
471                 dev_notice(&instance->pdev->dev, "1068 offset handshake read=%x\n", pcidata);
472                 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
473                         dev_notice(&instance->pdev->dev, "1068 offset pcidt=%x\n", pcidata);
474                         pcidata = 0;
475                         pci_write_config_dword(instance->pdev,
476                                 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
477                 }
478         }
479         return 0;
480 }
481 
482 /**
483  * megasas_check_reset_xscale - For controller reset check
484  * @regs:                               MFI register set
485  */
486 static int
487 megasas_check_reset_xscale(struct megasas_instance *instance,
488                 struct megasas_register_set __iomem *regs)
489 {
490         if ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
491             (le32_to_cpu(*instance->consumer) ==
492                 MEGASAS_ADPRESET_INPROG_SIGN))
493                 return 1;
494         return 0;
495 }
496 
497 static struct megasas_instance_template megasas_instance_template_xscale = {
498 
499         .fire_cmd = megasas_fire_cmd_xscale,
500         .enable_intr = megasas_enable_intr_xscale,
501         .disable_intr = megasas_disable_intr_xscale,
502         .clear_intr = megasas_clear_intr_xscale,
503         .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
504         .adp_reset = megasas_adp_reset_xscale,
505         .check_reset = megasas_check_reset_xscale,
506         .service_isr = megasas_isr,
507         .tasklet = megasas_complete_cmd_dpc,
508         .init_adapter = megasas_init_adapter_mfi,
509         .build_and_issue_cmd = megasas_build_and_issue_cmd,
510         .issue_dcmd = megasas_issue_dcmd,
511 };
512 
513 /**
514 *       This is the end of set of functions & definitions specific
515 *       to xscale (deviceid : 1064R, PERC5) controllers
516 */
517 
518 /**
519 *       The following functions are defined for ppc (deviceid : 0x60)
520 *       controllers
521 */
522 
523 /**
524  * megasas_enable_intr_ppc -    Enables interrupts
525  * @regs:                       MFI register set
526  */
527 static inline void
528 megasas_enable_intr_ppc(struct megasas_instance *instance)
529 {
530         struct megasas_register_set __iomem *regs;
531 
532         regs = instance->reg_set;
533         writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
534 
535         writel(~0x80000000, &(regs)->outbound_intr_mask);
536 
537         /* Dummy readl to force pci flush */
538         readl(&regs->outbound_intr_mask);
539 }
540 
541 /**
542  * megasas_disable_intr_ppc -   Disable interrupt
543  * @regs:                       MFI register set
544  */
545 static inline void
546 megasas_disable_intr_ppc(struct megasas_instance *instance)
547 {
548         struct megasas_register_set __iomem *regs;
549         u32 mask = 0xFFFFFFFF;
550 
551         regs = instance->reg_set;
552         writel(mask, &regs->outbound_intr_mask);
553         /* Dummy readl to force pci flush */
554         readl(&regs->outbound_intr_mask);
555 }
556 
557 /**
558  * megasas_read_fw_status_reg_ppc - returns the current FW status value
559  * @regs:                       MFI register set
560  */
561 static u32
562 megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs)
563 {
564         return readl(&(regs)->outbound_scratch_pad);
565 }
566 
567 /**
568  * megasas_clear_interrupt_ppc -        Check & clear interrupt
569  * @regs:                               MFI register set
570  */
571 static int
572 megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs)
573 {
574         u32 status, mfiStatus = 0;
575 
576         /*
577          * Check if it is our interrupt
578          */
579         status = readl(&regs->outbound_intr_status);
580 
581         if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
582                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
583 
584         if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
585                 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
586 
587         /*
588          * Clear the interrupt by writing back the same value
589          */
590         writel(status, &regs->outbound_doorbell_clear);
591 
592         /* Dummy readl to force pci flush */
593         readl(&regs->outbound_doorbell_clear);
594 
595         return mfiStatus;
596 }
597 
598 /**
599  * megasas_fire_cmd_ppc -       Sends command to the FW
600  * @frame_phys_addr :           Physical address of cmd
601  * @frame_count :               Number of frames for the command
602  * @regs :                      MFI register set
603  */
604 static inline void
605 megasas_fire_cmd_ppc(struct megasas_instance *instance,
606                 dma_addr_t frame_phys_addr,
607                 u32 frame_count,
608                 struct megasas_register_set __iomem *regs)
609 {
610         unsigned long flags;
611 
612         spin_lock_irqsave(&instance->hba_lock, flags);
613         writel((frame_phys_addr | (frame_count<<1))|1,
614                         &(regs)->inbound_queue_port);
615         spin_unlock_irqrestore(&instance->hba_lock, flags);
616 }
617 
618 /**
619  * megasas_check_reset_ppc -    For controller reset check
620  * @regs:                               MFI register set
621  */
622 static int
623 megasas_check_reset_ppc(struct megasas_instance *instance,
624                         struct megasas_register_set __iomem *regs)
625 {
626         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
627                 return 1;
628 
629         return 0;
630 }
631 
632 static struct megasas_instance_template megasas_instance_template_ppc = {
633 
634         .fire_cmd = megasas_fire_cmd_ppc,
635         .enable_intr = megasas_enable_intr_ppc,
636         .disable_intr = megasas_disable_intr_ppc,
637         .clear_intr = megasas_clear_intr_ppc,
638         .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
639         .adp_reset = megasas_adp_reset_xscale,
640         .check_reset = megasas_check_reset_ppc,
641         .service_isr = megasas_isr,
642         .tasklet = megasas_complete_cmd_dpc,
643         .init_adapter = megasas_init_adapter_mfi,
644         .build_and_issue_cmd = megasas_build_and_issue_cmd,
645         .issue_dcmd = megasas_issue_dcmd,
646 };
647 
648 /**
649  * megasas_enable_intr_skinny - Enables interrupts
650  * @regs:                       MFI register set
651  */
652 static inline void
653 megasas_enable_intr_skinny(struct megasas_instance *instance)
654 {
655         struct megasas_register_set __iomem *regs;
656 
657         regs = instance->reg_set;
658         writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
659 
660         writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
661 
662         /* Dummy readl to force pci flush */
663         readl(&regs->outbound_intr_mask);
664 }
665 
666 /**
667  * megasas_disable_intr_skinny -        Disables interrupt
668  * @regs:                       MFI register set
669  */
670 static inline void
671 megasas_disable_intr_skinny(struct megasas_instance *instance)
672 {
673         struct megasas_register_set __iomem *regs;
674         u32 mask = 0xFFFFFFFF;
675 
676         regs = instance->reg_set;
677         writel(mask, &regs->outbound_intr_mask);
678         /* Dummy readl to force pci flush */
679         readl(&regs->outbound_intr_mask);
680 }
681 
682 /**
683  * megasas_read_fw_status_reg_skinny - returns the current FW status value
684  * @regs:                       MFI register set
685  */
686 static u32
687 megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs)
688 {
689         return readl(&(regs)->outbound_scratch_pad);
690 }
691 
692 /**
693  * megasas_clear_interrupt_skinny -     Check & clear interrupt
694  * @regs:                               MFI register set
695  */
696 static int
697 megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs)
698 {
699         u32 status;
700         u32 mfiStatus = 0;
701 
702         /*
703          * Check if it is our interrupt
704          */
705         status = readl(&regs->outbound_intr_status);
706 
707         if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
708                 return 0;
709         }
710 
711         /*
712          * Check if it is our interrupt
713          */
714         if ((megasas_read_fw_status_reg_skinny(regs) & MFI_STATE_MASK) ==
715             MFI_STATE_FAULT) {
716                 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
717         } else
718                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
719 
720         /*
721          * Clear the interrupt by writing back the same value
722          */
723         writel(status, &regs->outbound_intr_status);
724 
725         /*
726          * dummy read to flush PCI
727          */
728         readl(&regs->outbound_intr_status);
729 
730         return mfiStatus;
731 }
732 
733 /**
734  * megasas_fire_cmd_skinny -    Sends command to the FW
735  * @frame_phys_addr :           Physical address of cmd
736  * @frame_count :               Number of frames for the command
737  * @regs :                      MFI register set
738  */
739 static inline void
740 megasas_fire_cmd_skinny(struct megasas_instance *instance,
741                         dma_addr_t frame_phys_addr,
742                         u32 frame_count,
743                         struct megasas_register_set __iomem *regs)
744 {
745         unsigned long flags;
746 
747         spin_lock_irqsave(&instance->hba_lock, flags);
748         writel(upper_32_bits(frame_phys_addr),
749                &(regs)->inbound_high_queue_port);
750         writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
751                &(regs)->inbound_low_queue_port);
752         mmiowb();
753         spin_unlock_irqrestore(&instance->hba_lock, flags);
754 }
755 
756 /**
757  * megasas_check_reset_skinny - For controller reset check
758  * @regs:                               MFI register set
759  */
760 static int
761 megasas_check_reset_skinny(struct megasas_instance *instance,
762                                 struct megasas_register_set __iomem *regs)
763 {
764         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
765                 return 1;
766 
767         return 0;
768 }
769 
770 static struct megasas_instance_template megasas_instance_template_skinny = {
771 
772         .fire_cmd = megasas_fire_cmd_skinny,
773         .enable_intr = megasas_enable_intr_skinny,
774         .disable_intr = megasas_disable_intr_skinny,
775         .clear_intr = megasas_clear_intr_skinny,
776         .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
777         .adp_reset = megasas_adp_reset_gen2,
778         .check_reset = megasas_check_reset_skinny,
779         .service_isr = megasas_isr,
780         .tasklet = megasas_complete_cmd_dpc,
781         .init_adapter = megasas_init_adapter_mfi,
782         .build_and_issue_cmd = megasas_build_and_issue_cmd,
783         .issue_dcmd = megasas_issue_dcmd,
784 };
785 
786 
787 /**
788 *       The following functions are defined for gen2 (deviceid : 0x78 0x79)
789 *       controllers
790 */
791 
792 /**
793  * megasas_enable_intr_gen2 -  Enables interrupts
794  * @regs:                      MFI register set
795  */
796 static inline void
797 megasas_enable_intr_gen2(struct megasas_instance *instance)
798 {
799         struct megasas_register_set __iomem *regs;
800 
801         regs = instance->reg_set;
802         writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
803 
804         /* write ~0x00000005 (4 & 1) to the intr mask*/
805         writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
806 
807         /* Dummy readl to force pci flush */
808         readl(&regs->outbound_intr_mask);
809 }
810 
811 /**
812  * megasas_disable_intr_gen2 - Disables interrupt
813  * @regs:                      MFI register set
814  */
815 static inline void
816 megasas_disable_intr_gen2(struct megasas_instance *instance)
817 {
818         struct megasas_register_set __iomem *regs;
819         u32 mask = 0xFFFFFFFF;
820 
821         regs = instance->reg_set;
822         writel(mask, &regs->outbound_intr_mask);
823         /* Dummy readl to force pci flush */
824         readl(&regs->outbound_intr_mask);
825 }
826 
827 /**
828  * megasas_read_fw_status_reg_gen2 - returns the current FW status value
829  * @regs:                      MFI register set
830  */
831 static u32
832 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs)
833 {
834         return readl(&(regs)->outbound_scratch_pad);
835 }
836 
837 /**
838  * megasas_clear_interrupt_gen2 -      Check & clear interrupt
839  * @regs:                              MFI register set
840  */
841 static int
842 megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs)
843 {
844         u32 status;
845         u32 mfiStatus = 0;
846 
847         /*
848          * Check if it is our interrupt
849          */
850         status = readl(&regs->outbound_intr_status);
851 
852         if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
853                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
854         }
855         if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
856                 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
857         }
858 
859         /*
860          * Clear the interrupt by writing back the same value
861          */
862         if (mfiStatus)
863                 writel(status, &regs->outbound_doorbell_clear);
864 
865         /* Dummy readl to force pci flush */
866         readl(&regs->outbound_intr_status);
867 
868         return mfiStatus;
869 }
870 /**
871  * megasas_fire_cmd_gen2 -     Sends command to the FW
872  * @frame_phys_addr :          Physical address of cmd
873  * @frame_count :              Number of frames for the command
874  * @regs :                     MFI register set
875  */
876 static inline void
877 megasas_fire_cmd_gen2(struct megasas_instance *instance,
878                         dma_addr_t frame_phys_addr,
879                         u32 frame_count,
880                         struct megasas_register_set __iomem *regs)
881 {
882         unsigned long flags;
883 
884         spin_lock_irqsave(&instance->hba_lock, flags);
885         writel((frame_phys_addr | (frame_count<<1))|1,
886                         &(regs)->inbound_queue_port);
887         spin_unlock_irqrestore(&instance->hba_lock, flags);
888 }
889 
890 /**
891  * megasas_adp_reset_gen2 -     For controller reset
892  * @regs:                               MFI register set
893  */
894 static int
895 megasas_adp_reset_gen2(struct megasas_instance *instance,
896                         struct megasas_register_set __iomem *reg_set)
897 {
898         u32 retry = 0 ;
899         u32 HostDiag;
900         u32 __iomem *seq_offset = &reg_set->seq_offset;
901         u32 __iomem *hostdiag_offset = &reg_set->host_diag;
902 
903         if (instance->instancet == &megasas_instance_template_skinny) {
904                 seq_offset = &reg_set->fusion_seq_offset;
905                 hostdiag_offset = &reg_set->fusion_host_diag;
906         }
907 
908         writel(0, seq_offset);
909         writel(4, seq_offset);
910         writel(0xb, seq_offset);
911         writel(2, seq_offset);
912         writel(7, seq_offset);
913         writel(0xd, seq_offset);
914 
915         msleep(1000);
916 
917         HostDiag = (u32)readl(hostdiag_offset);
918 
919         while (!(HostDiag & DIAG_WRITE_ENABLE)) {
920                 msleep(100);
921                 HostDiag = (u32)readl(hostdiag_offset);
922                 dev_notice(&instance->pdev->dev, "RESETGEN2: retry=%x, hostdiag=%x\n",
923                                         retry, HostDiag);
924 
925                 if (retry++ >= 100)
926                         return 1;
927 
928         }
929 
930         dev_notice(&instance->pdev->dev, "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
931 
932         writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
933 
934         ssleep(10);
935 
936         HostDiag = (u32)readl(hostdiag_offset);
937         while (HostDiag & DIAG_RESET_ADAPTER) {
938                 msleep(100);
939                 HostDiag = (u32)readl(hostdiag_offset);
940                 dev_notice(&instance->pdev->dev, "RESET_GEN2: retry=%x, hostdiag=%x\n",
941                                 retry, HostDiag);
942 
943                 if (retry++ >= 1000)
944                         return 1;
945 
946         }
947         return 0;
948 }
949 
950 /**
951  * megasas_check_reset_gen2 -   For controller reset check
952  * @regs:                               MFI register set
953  */
954 static int
955 megasas_check_reset_gen2(struct megasas_instance *instance,
956                 struct megasas_register_set __iomem *regs)
957 {
958         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
959                 return 1;
960 
961         return 0;
962 }
963 
964 static struct megasas_instance_template megasas_instance_template_gen2 = {
965 
966         .fire_cmd = megasas_fire_cmd_gen2,
967         .enable_intr = megasas_enable_intr_gen2,
968         .disable_intr = megasas_disable_intr_gen2,
969         .clear_intr = megasas_clear_intr_gen2,
970         .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
971         .adp_reset = megasas_adp_reset_gen2,
972         .check_reset = megasas_check_reset_gen2,
973         .service_isr = megasas_isr,
974         .tasklet = megasas_complete_cmd_dpc,
975         .init_adapter = megasas_init_adapter_mfi,
976         .build_and_issue_cmd = megasas_build_and_issue_cmd,
977         .issue_dcmd = megasas_issue_dcmd,
978 };
979 
980 /**
981 *       This is the end of set of functions & definitions
982 *       specific to gen2 (deviceid : 0x78, 0x79) controllers
983 */
984 
985 /*
986  * Template added for TB (Fusion)
987  */
988 extern struct megasas_instance_template megasas_instance_template_fusion;
989 
990 /**
991  * megasas_issue_polled -       Issues a polling command
992  * @instance:                   Adapter soft state
993  * @cmd:                        Command packet to be issued
994  *
995  * For polling, MFI requires the cmd_status to be set to MFI_STAT_INVALID_STATUS before posting.
996  */
997 int
998 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
999 {
1000         struct megasas_header *frame_hdr = &cmd->frame->hdr;
1001 
1002         frame_hdr->cmd_status = MFI_STAT_INVALID_STATUS;
1003         frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
1004 
1005         if ((atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) ||
1006                 (instance->instancet->issue_dcmd(instance, cmd))) {
1007                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1008                         __func__, __LINE__);
1009                 return DCMD_NOT_FIRED;
1010         }
1011 
1012         return wait_and_poll(instance, cmd, instance->requestorId ?
1013                         MEGASAS_ROUTINE_WAIT_TIME_VF : MFI_IO_TIMEOUT_SECS);
1014 }
1015 
1016 /**
1017  * megasas_issue_blocked_cmd -  Synchronous wrapper around regular FW cmds
1018  * @instance:                   Adapter soft state
1019  * @cmd:                        Command to be issued
1020  * @timeout:                    Timeout in seconds
1021  *
1022  * This function waits on an event for the command to be returned from ISR.
1023  * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1024  * Used to issue ioctl commands.
1025  */
1026 int
1027 megasas_issue_blocked_cmd(struct megasas_instance *instance,
1028                           struct megasas_cmd *cmd, int timeout)
1029 {
1030         int ret = 0;
1031         cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
1032 
1033         if ((atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) ||
1034                 (instance->instancet->issue_dcmd(instance, cmd))) {
1035                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1036                         __func__, __LINE__);
1037                 return DCMD_NOT_FIRED;
1038         }
1039 
1040         if (timeout) {
1041                 ret = wait_event_timeout(instance->int_cmd_wait_q,
1042                                 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ);
1043                 if (!ret) {
1044                         dev_err(&instance->pdev->dev, "Failed from %s %d DCMD Timed out\n",
1045                                 __func__, __LINE__);
1046                         return DCMD_TIMEOUT;
1047                 }
1048         } else
1049                 wait_event(instance->int_cmd_wait_q,
1050                                 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS);
1051 
1052         return (cmd->cmd_status_drv == MFI_STAT_OK) ?
1053                 DCMD_SUCCESS : DCMD_FAILED;
1054 }
1055 
1056 /**
1057  * megasas_issue_blocked_abort_cmd -    Aborts previously issued cmd
1058  * @instance:                           Adapter soft state
1059  * @cmd_to_abort:                       Previously issued cmd to be aborted
1060  * @timeout:                            Timeout in seconds
1061  *
1062  * MFI firmware can abort previously issued AEN comamnd (automatic event
1063  * notification). The megasas_issue_blocked_abort_cmd() issues such abort
1064  * cmd and waits for return status.
1065  * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1066  */
1067 static int
1068 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
1069                                 struct megasas_cmd *cmd_to_abort, int timeout)
1070 {
1071         struct megasas_cmd *cmd;
1072         struct megasas_abort_frame *abort_fr;
1073         int ret = 0;
1074 
1075         cmd = megasas_get_cmd(instance);
1076 
1077         if (!cmd)
1078                 return -1;
1079 
1080         abort_fr = &cmd->frame->abort;
1081 
1082         /*
1083          * Prepare and issue the abort frame
1084          */
1085         abort_fr->cmd = MFI_CMD_ABORT;
1086         abort_fr->cmd_status = MFI_STAT_INVALID_STATUS;
1087         abort_fr->flags = cpu_to_le16(0);
1088         abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
1089         abort_fr->abort_mfi_phys_addr_lo =
1090                 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
1091         abort_fr->abort_mfi_phys_addr_hi =
1092                 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
1093 
1094         cmd->sync_cmd = 1;
1095         cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
1096 
1097         if ((atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) ||
1098                 (instance->instancet->issue_dcmd(instance, cmd))) {
1099                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1100                         __func__, __LINE__);
1101                 return DCMD_NOT_FIRED;
1102         }
1103 
1104         if (timeout) {
1105                 ret = wait_event_timeout(instance->abort_cmd_wait_q,
1106                                 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ);
1107                 if (!ret) {
1108                         dev_err(&instance->pdev->dev, "Failed from %s %d Abort Timed out\n",
1109                                 __func__, __LINE__);
1110                         return DCMD_TIMEOUT;
1111                 }
1112         } else
1113                 wait_event(instance->abort_cmd_wait_q,
1114                                 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS);
1115 
1116         cmd->sync_cmd = 0;
1117 
1118         megasas_return_cmd(instance, cmd);
1119         return (cmd->cmd_status_drv == MFI_STAT_OK) ?
1120                 DCMD_SUCCESS : DCMD_FAILED;
1121 }
1122 
1123 /**
1124  * megasas_make_sgl32 - Prepares 32-bit SGL
1125  * @instance:           Adapter soft state
1126  * @scp:                SCSI command from the mid-layer
1127  * @mfi_sgl:            SGL to be filled in
1128  *
1129  * If successful, this function returns the number of SG elements. Otherwise,
1130  * it returnes -1.
1131  */
1132 static int
1133 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
1134                    union megasas_sgl *mfi_sgl)
1135 {
1136         int i;
1137         int sge_count;
1138         struct scatterlist *os_sgl;
1139 
1140         sge_count = scsi_dma_map(scp);
1141         BUG_ON(sge_count < 0);
1142 
1143         if (sge_count) {
1144                 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1145                         mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1146                         mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
1147                 }
1148         }
1149         return sge_count;
1150 }
1151 
1152 /**
1153  * megasas_make_sgl64 - Prepares 64-bit SGL
1154  * @instance:           Adapter soft state
1155  * @scp:                SCSI command from the mid-layer
1156  * @mfi_sgl:            SGL to be filled in
1157  *
1158  * If successful, this function returns the number of SG elements. Otherwise,
1159  * it returnes -1.
1160  */
1161 static int
1162 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1163                    union megasas_sgl *mfi_sgl)
1164 {
1165         int i;
1166         int sge_count;
1167         struct scatterlist *os_sgl;
1168 
1169         sge_count = scsi_dma_map(scp);
1170         BUG_ON(sge_count < 0);
1171 
1172         if (sge_count) {
1173                 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1174                         mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1175                         mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
1176                 }
1177         }
1178         return sge_count;
1179 }
1180 
1181 /**
1182  * megasas_make_sgl_skinny - Prepares IEEE SGL
1183  * @instance:           Adapter soft state
1184  * @scp:                SCSI command from the mid-layer
1185  * @mfi_sgl:            SGL to be filled in
1186  *
1187  * If successful, this function returns the number of SG elements. Otherwise,
1188  * it returnes -1.
1189  */
1190 static int
1191 megasas_make_sgl_skinny(struct megasas_instance *instance,
1192                 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1193 {
1194         int i;
1195         int sge_count;
1196         struct scatterlist *os_sgl;
1197 
1198         sge_count = scsi_dma_map(scp);
1199 
1200         if (sge_count) {
1201                 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1202                         mfi_sgl->sge_skinny[i].length =
1203                                 cpu_to_le32(sg_dma_len(os_sgl));
1204                         mfi_sgl->sge_skinny[i].phys_addr =
1205                                 cpu_to_le64(sg_dma_address(os_sgl));
1206                         mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
1207                 }
1208         }
1209         return sge_count;
1210 }
1211 
1212  /**
1213  * megasas_get_frame_count - Computes the number of frames
1214  * @frame_type          : type of frame- io or pthru frame
1215  * @sge_count           : number of sg elements
1216  *
1217  * Returns the number of frames required for numnber of sge's (sge_count)
1218  */
1219 
1220 static u32 megasas_get_frame_count(struct megasas_instance *instance,
1221                         u8 sge_count, u8 frame_type)
1222 {
1223         int num_cnt;
1224         int sge_bytes;
1225         u32 sge_sz;
1226         u32 frame_count = 0;
1227 
1228         sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1229             sizeof(struct megasas_sge32);
1230 
1231         if (instance->flag_ieee) {
1232                 sge_sz = sizeof(struct megasas_sge_skinny);
1233         }
1234 
1235         /*
1236          * Main frame can contain 2 SGEs for 64-bit SGLs and
1237          * 3 SGEs for 32-bit SGLs for ldio &
1238          * 1 SGEs for 64-bit SGLs and
1239          * 2 SGEs for 32-bit SGLs for pthru frame
1240          */
1241         if (unlikely(frame_type == PTHRU_FRAME)) {
1242                 if (instance->flag_ieee == 1) {
1243                         num_cnt = sge_count - 1;
1244                 } else if (IS_DMA64)
1245                         num_cnt = sge_count - 1;
1246                 else
1247                         num_cnt = sge_count - 2;
1248         } else {
1249                 if (instance->flag_ieee == 1) {
1250                         num_cnt = sge_count - 1;
1251                 } else if (IS_DMA64)
1252                         num_cnt = sge_count - 2;
1253                 else
1254                         num_cnt = sge_count - 3;
1255         }
1256 
1257         if (num_cnt > 0) {
1258                 sge_bytes = sge_sz * num_cnt;
1259 
1260                 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1261                     ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1262         }
1263         /* Main frame */
1264         frame_count += 1;
1265 
1266         if (frame_count > 7)
1267                 frame_count = 8;
1268         return frame_count;
1269 }
1270 
1271 /**
1272  * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1273  * @instance:           Adapter soft state
1274  * @scp:                SCSI command
1275  * @cmd:                Command to be prepared in
1276  *
1277  * This function prepares CDB commands. These are typcially pass-through
1278  * commands to the devices.
1279  */
1280 static int
1281 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1282                    struct megasas_cmd *cmd)
1283 {
1284         u32 is_logical;
1285         u32 device_id;
1286         u16 flags = 0;
1287         struct megasas_pthru_frame *pthru;
1288 
1289         is_logical = MEGASAS_IS_LOGICAL(scp);
1290         device_id = MEGASAS_DEV_INDEX(scp);
1291         pthru = (struct megasas_pthru_frame *)cmd->frame;
1292 
1293         if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1294                 flags = MFI_FRAME_DIR_WRITE;
1295         else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1296                 flags = MFI_FRAME_DIR_READ;
1297         else if (scp->sc_data_direction == PCI_DMA_NONE)
1298                 flags = MFI_FRAME_DIR_NONE;
1299 
1300         if (instance->flag_ieee == 1) {
1301                 flags |= MFI_FRAME_IEEE;
1302         }
1303 
1304         /*
1305          * Prepare the DCDB frame
1306          */
1307         pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1308         pthru->cmd_status = 0x0;
1309         pthru->scsi_status = 0x0;
1310         pthru->target_id = device_id;
1311         pthru->lun = scp->device->lun;
1312         pthru->cdb_len = scp->cmd_len;
1313         pthru->timeout = 0;
1314         pthru->pad_0 = 0;
1315         pthru->flags = cpu_to_le16(flags);
1316         pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
1317 
1318         memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1319 
1320         /*
1321          * If the command is for the tape device, set the
1322          * pthru timeout to the os layer timeout value.
1323          */
1324         if (scp->device->type == TYPE_TAPE) {
1325                 if ((scp->request->timeout / HZ) > 0xFFFF)
1326                         pthru->timeout = cpu_to_le16(0xFFFF);
1327                 else
1328                         pthru->timeout = cpu_to_le16(scp->request->timeout / HZ);
1329         }
1330 
1331         /*
1332          * Construct SGL
1333          */
1334         if (instance->flag_ieee == 1) {
1335                 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1336                 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1337                                                       &pthru->sgl);
1338         } else if (IS_DMA64) {
1339                 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1340                 pthru->sge_count = megasas_make_sgl64(instance, scp,
1341                                                       &pthru->sgl);
1342         } else
1343                 pthru->sge_count = megasas_make_sgl32(instance, scp,
1344                                                       &pthru->sgl);
1345 
1346         if (pthru->sge_count > instance->max_num_sge) {
1347                 dev_err(&instance->pdev->dev, "DCDB too many SGE NUM=%x\n",
1348                         pthru->sge_count);
1349                 return 0;
1350         }
1351 
1352         /*
1353          * Sense info specific
1354          */
1355         pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1356         pthru->sense_buf_phys_addr_hi =
1357                 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
1358         pthru->sense_buf_phys_addr_lo =
1359                 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
1360 
1361         /*
1362          * Compute the total number of frames this command consumes. FW uses
1363          * this number to pull sufficient number of frames from host memory.
1364          */
1365         cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1366                                                         PTHRU_FRAME);
1367 
1368         return cmd->frame_count;
1369 }
1370 
1371 /**
1372  * megasas_build_ldio - Prepares IOs to logical devices
1373  * @instance:           Adapter soft state
1374  * @scp:                SCSI command
1375  * @cmd:                Command to be prepared
1376  *
1377  * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1378  */
1379 static int
1380 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1381                    struct megasas_cmd *cmd)
1382 {
1383         u32 device_id;
1384         u8 sc = scp->cmnd[0];
1385         u16 flags = 0;
1386         struct megasas_io_frame *ldio;
1387 
1388         device_id = MEGASAS_DEV_INDEX(scp);
1389         ldio = (struct megasas_io_frame *)cmd->frame;
1390 
1391         if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1392                 flags = MFI_FRAME_DIR_WRITE;
1393         else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1394                 flags = MFI_FRAME_DIR_READ;
1395 
1396         if (instance->flag_ieee == 1) {
1397                 flags |= MFI_FRAME_IEEE;
1398         }
1399 
1400         /*
1401          * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1402          */
1403         ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1404         ldio->cmd_status = 0x0;
1405         ldio->scsi_status = 0x0;
1406         ldio->target_id = device_id;
1407         ldio->timeout = 0;
1408         ldio->reserved_0 = 0;
1409         ldio->pad_0 = 0;
1410         ldio->flags = cpu_to_le16(flags);
1411         ldio->start_lba_hi = 0;
1412         ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1413 
1414         /*
1415          * 6-byte READ(0x08) or WRITE(0x0A) cdb
1416          */
1417         if (scp->cmd_len == 6) {
1418                 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
1419                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
1420                                                  ((u32) scp->cmnd[2] << 8) |
1421                                                  (u32) scp->cmnd[3]);
1422 
1423                 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
1424         }
1425 
1426         /*
1427          * 10-byte READ(0x28) or WRITE(0x2A) cdb
1428          */
1429         else if (scp->cmd_len == 10) {
1430                 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
1431                                               ((u32) scp->cmnd[7] << 8));
1432                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1433                                                  ((u32) scp->cmnd[3] << 16) |
1434                                                  ((u32) scp->cmnd[4] << 8) |
1435                                                  (u32) scp->cmnd[5]);
1436         }
1437 
1438         /*
1439          * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1440          */
1441         else if (scp->cmd_len == 12) {
1442                 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1443                                               ((u32) scp->cmnd[7] << 16) |
1444                                               ((u32) scp->cmnd[8] << 8) |
1445                                               (u32) scp->cmnd[9]);
1446 
1447                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1448                                                  ((u32) scp->cmnd[3] << 16) |
1449                                                  ((u32) scp->cmnd[4] << 8) |
1450                                                  (u32) scp->cmnd[5]);
1451         }
1452 
1453         /*
1454          * 16-byte READ(0x88) or WRITE(0x8A) cdb
1455          */
1456         else if (scp->cmd_len == 16) {
1457                 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
1458                                               ((u32) scp->cmnd[11] << 16) |
1459                                               ((u32) scp->cmnd[12] << 8) |
1460                                               (u32) scp->cmnd[13]);
1461 
1462                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1463                                                  ((u32) scp->cmnd[7] << 16) |
1464                                                  ((u32) scp->cmnd[8] << 8) |
1465                                                  (u32) scp->cmnd[9]);
1466 
1467                 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1468                                                  ((u32) scp->cmnd[3] << 16) |
1469                                                  ((u32) scp->cmnd[4] << 8) |
1470                                                  (u32) scp->cmnd[5]);
1471 
1472         }
1473 
1474         /*
1475          * Construct SGL
1476          */
1477         if (instance->flag_ieee) {
1478                 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1479                 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1480                                               &ldio->sgl);
1481         } else if (IS_DMA64) {
1482                 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1483                 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1484         } else
1485                 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1486 
1487         if (ldio->sge_count > instance->max_num_sge) {
1488                 dev_err(&instance->pdev->dev, "build_ld_io: sge_count = %x\n",
1489                         ldio->sge_count);
1490                 return 0;
1491         }
1492 
1493         /*
1494          * Sense info specific
1495          */
1496         ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1497         ldio->sense_buf_phys_addr_hi = 0;
1498         ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
1499 
1500         /*
1501          * Compute the total number of frames this command consumes. FW uses
1502          * this number to pull sufficient number of frames from host memory.
1503          */
1504         cmd->frame_count = megasas_get_frame_count(instance,
1505                         ldio->sge_count, IO_FRAME);
1506 
1507         return cmd->frame_count;
1508 }
1509 
1510 /**
1511  * megasas_cmd_type -           Checks if the cmd is for logical drive/sysPD
1512  *                              and whether it's RW or non RW
1513  * @scmd:                       SCSI command
1514  *
1515  */
1516 inline int megasas_cmd_type(struct scsi_cmnd *cmd)
1517 {
1518         int ret;
1519 
1520         switch (cmd->cmnd[0]) {
1521         case READ_10:
1522         case WRITE_10:
1523         case READ_12:
1524         case WRITE_12:
1525         case READ_6:
1526         case WRITE_6:
1527         case READ_16:
1528         case WRITE_16:
1529                 ret = (MEGASAS_IS_LOGICAL(cmd)) ?
1530                         READ_WRITE_LDIO : READ_WRITE_SYSPDIO;
1531                 break;
1532         default:
1533                 ret = (MEGASAS_IS_LOGICAL(cmd)) ?
1534                         NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO;
1535         }
1536         return ret;
1537 }
1538 
1539  /**
1540  * megasas_dump_pending_frames -        Dumps the frame address of all pending cmds
1541  *                                      in FW
1542  * @instance:                           Adapter soft state
1543  */
1544 static inline void
1545 megasas_dump_pending_frames(struct megasas_instance *instance)
1546 {
1547         struct megasas_cmd *cmd;
1548         int i,n;
1549         union megasas_sgl *mfi_sgl;
1550         struct megasas_io_frame *ldio;
1551         struct megasas_pthru_frame *pthru;
1552         u32 sgcount;
1553         u32 max_cmd = instance->max_fw_cmds;
1554 
1555         dev_err(&instance->pdev->dev, "[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1556         dev_err(&instance->pdev->dev, "[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1557         if (IS_DMA64)
1558                 dev_err(&instance->pdev->dev, "[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1559         else
1560                 dev_err(&instance->pdev->dev, "[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1561 
1562         dev_err(&instance->pdev->dev, "[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1563         for (i = 0; i < max_cmd; i++) {
1564                 cmd = instance->cmd_list[i];
1565                 if (!cmd->scmd)
1566                         continue;
1567                 dev_err(&instance->pdev->dev, "[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1568                 if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) {
1569                         ldio = (struct megasas_io_frame *)cmd->frame;
1570                         mfi_sgl = &ldio->sgl;
1571                         sgcount = ldio->sge_count;
1572                         dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1573                         " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1574                         instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
1575                         le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
1576                         le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
1577                 } else {
1578                         pthru = (struct megasas_pthru_frame *) cmd->frame;
1579                         mfi_sgl = &pthru->sgl;
1580                         sgcount = pthru->sge_count;
1581                         dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1582                         "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1583                         instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
1584                         pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
1585                         le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
1586                 }
1587                 if (megasas_dbg_lvl & MEGASAS_DBG_LVL) {
1588                         for (n = 0; n < sgcount; n++) {
1589                                 if (IS_DMA64)
1590                                         dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%llx\n",
1591                                                 le32_to_cpu(mfi_sgl->sge64[n].length),
1592                                                 le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
1593                                 else
1594                                         dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%x\n",
1595                                                 le32_to_cpu(mfi_sgl->sge32[n].length),
1596                                                 le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
1597                         }
1598                 }
1599         } /*for max_cmd*/
1600         dev_err(&instance->pdev->dev, "[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1601         for (i = 0; i < max_cmd; i++) {
1602 
1603                 cmd = instance->cmd_list[i];
1604 
1605                 if (cmd->sync_cmd == 1)
1606                         dev_err(&instance->pdev->dev, "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1607         }
1608         dev_err(&instance->pdev->dev, "[%d]: Dumping Done\n\n",instance->host->host_no);
1609 }
1610 
1611 u32
1612 megasas_build_and_issue_cmd(struct megasas_instance *instance,
1613                             struct scsi_cmnd *scmd)
1614 {
1615         struct megasas_cmd *cmd;
1616         u32 frame_count;
1617 
1618         cmd = megasas_get_cmd(instance);
1619         if (!cmd)
1620                 return SCSI_MLQUEUE_HOST_BUSY;
1621 
1622         /*
1623          * Logical drive command
1624          */
1625         if (megasas_cmd_type(scmd) == READ_WRITE_LDIO)
1626                 frame_count = megasas_build_ldio(instance, scmd, cmd);
1627         else
1628                 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1629 
1630         if (!frame_count)
1631                 goto out_return_cmd;
1632 
1633         cmd->scmd = scmd;
1634         scmd->SCp.ptr = (char *)cmd;
1635 
1636         /*
1637          * Issue the command to the FW
1638          */
1639         atomic_inc(&instance->fw_outstanding);
1640 
1641         instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1642                                 cmd->frame_count-1, instance->reg_set);
1643 
1644         return 0;
1645 out_return_cmd:
1646         megasas_return_cmd(instance, cmd);
1647         return SCSI_MLQUEUE_HOST_BUSY;
1648 }
1649 
1650 
1651 /**
1652  * megasas_queue_command -      Queue entry point
1653  * @scmd:                       SCSI command to be queued
1654  * @done:                       Callback entry point
1655  */
1656 static int
1657 megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
1658 {
1659         struct megasas_instance *instance;
1660         struct MR_PRIV_DEVICE *mr_device_priv_data;
1661 
1662         instance = (struct megasas_instance *)
1663             scmd->device->host->hostdata;
1664 
1665         if (instance->unload == 1) {
1666                 scmd->result = DID_NO_CONNECT << 16;
1667                 scmd->scsi_done(scmd);
1668                 return 0;
1669         }
1670 
1671         if (instance->issuepend_done == 0)
1672                 return SCSI_MLQUEUE_HOST_BUSY;
1673 
1674 
1675         /* Check for an mpio path and adjust behavior */
1676         if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
1677                 if (megasas_check_mpio_paths(instance, scmd) ==
1678                     (DID_RESET << 16)) {
1679                         return SCSI_MLQUEUE_HOST_BUSY;
1680                 } else {
1681                         scmd->result = DID_NO_CONNECT << 16;
1682                         scmd->scsi_done(scmd);
1683                         return 0;
1684                 }
1685         }
1686 
1687         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1688                 scmd->result = DID_NO_CONNECT << 16;
1689                 scmd->scsi_done(scmd);
1690                 return 0;
1691         }
1692 
1693         mr_device_priv_data = scmd->device->hostdata;
1694         if (!mr_device_priv_data) {
1695                 scmd->result = DID_NO_CONNECT << 16;
1696                 scmd->scsi_done(scmd);
1697                 return 0;
1698         }
1699 
1700         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1701                 return SCSI_MLQUEUE_HOST_BUSY;
1702 
1703         if (mr_device_priv_data->tm_busy)
1704                 return SCSI_MLQUEUE_DEVICE_BUSY;
1705 
1706 
1707         scmd->result = 0;
1708 
1709         if (MEGASAS_IS_LOGICAL(scmd) &&
1710             (scmd->device->id >= instance->fw_supported_vd_count ||
1711                 scmd->device->lun)) {
1712                 scmd->result = DID_BAD_TARGET << 16;
1713                 goto out_done;
1714         }
1715 
1716         switch (scmd->cmnd[0]) {
1717         case SYNCHRONIZE_CACHE:
1718                 /*
1719                  * FW takes care of flush cache on its own
1720                  * No need to send it down
1721                  */
1722                 scmd->result = DID_OK << 16;
1723                 goto out_done;
1724         default:
1725                 break;
1726         }
1727 
1728         return instance->instancet->build_and_issue_cmd(instance, scmd);
1729 
1730  out_done:
1731         scmd->scsi_done(scmd);
1732         return 0;
1733 }
1734 
1735 static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1736 {
1737         int i;
1738 
1739         for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1740 
1741                 if ((megasas_mgmt_info.instance[i]) &&
1742                     (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1743                         return megasas_mgmt_info.instance[i];
1744         }
1745 
1746         return NULL;
1747 }
1748 
1749 /*
1750 * megasas_update_sdev_properties - Update sdev structure based on controller's FW capabilities
1751 *
1752 * @sdev: OS provided scsi device
1753 *
1754 * Returns void
1755 */
1756 void megasas_update_sdev_properties(struct scsi_device *sdev)
1757 {
1758         u16 pd_index = 0;
1759         u32 device_id, ld;
1760         struct megasas_instance *instance;
1761         struct fusion_context *fusion;
1762         struct MR_PRIV_DEVICE *mr_device_priv_data;
1763         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1764         struct MR_LD_RAID *raid;
1765         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1766 
1767         instance = megasas_lookup_instance(sdev->host->host_no);
1768         fusion = instance->ctrl_context;
1769         mr_device_priv_data = sdev->hostdata;
1770 
1771         if (!fusion)
1772                 return;
1773 
1774         if (sdev->channel < MEGASAS_MAX_PD_CHANNELS &&
1775                 instance->use_seqnum_jbod_fp) {
1776                 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1777                         sdev->id;
1778                 pd_sync = (void *)fusion->pd_seq_sync
1779                                 [(instance->pd_seq_map_id - 1) & 1];
1780                 mr_device_priv_data->is_tm_capable =
1781                         pd_sync->seq[pd_index].capability.tmCapable;
1782         } else {
1783                 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
1784                                         + sdev->id;
1785                 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1786                 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
1787                 raid = MR_LdRaidGet(ld, local_map_ptr);
1788 
1789                 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER)
1790                 blk_queue_update_dma_alignment(sdev->request_queue, 0x7);
1791                 mr_device_priv_data->is_tm_capable =
1792                         raid->capability.tmCapable;
1793         }
1794 }
1795 
1796 static void megasas_set_device_queue_depth(struct scsi_device *sdev)
1797 {
1798         u16                             pd_index = 0;
1799         int             ret = DCMD_FAILED;
1800         struct megasas_instance *instance;
1801 
1802         instance = megasas_lookup_instance(sdev->host->host_no);
1803 
1804         if (sdev->channel < MEGASAS_MAX_PD_CHANNELS) {
1805                 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id;
1806 
1807                 if (instance->pd_info) {
1808                         mutex_lock(&instance->hba_mutex);
1809                         ret = megasas_get_pd_info(instance, pd_index);
1810                         mutex_unlock(&instance->hba_mutex);
1811                 }
1812 
1813                 if (ret != DCMD_SUCCESS)
1814                         return;
1815 
1816                 if (instance->pd_list[pd_index].driveState == MR_PD_STATE_SYSTEM) {
1817 
1818                         switch (instance->pd_list[pd_index].interface) {
1819                         case SAS_PD:
1820                                 scsi_change_queue_depth(sdev, MEGASAS_SAS_QD);
1821                                 break;
1822 
1823                         case SATA_PD:
1824                                 scsi_change_queue_depth(sdev, MEGASAS_SATA_QD);
1825                                 break;
1826 
1827                         default:
1828                                 scsi_change_queue_depth(sdev, MEGASAS_DEFAULT_PD_QD);
1829                         }
1830                 }
1831         }
1832 }
1833 
1834 
1835 static int megasas_slave_configure(struct scsi_device *sdev)
1836 {
1837         u16 pd_index = 0;
1838         struct megasas_instance *instance;
1839 
1840         instance = megasas_lookup_instance(sdev->host->host_no);
1841         if (instance->pd_list_not_supported) {
1842                 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS &&
1843                         sdev->type == TYPE_DISK) {
1844                         pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1845                                 sdev->id;
1846                         if (instance->pd_list[pd_index].driveState !=
1847                                 MR_PD_STATE_SYSTEM)
1848                                 return -ENXIO;
1849                 }
1850         }
1851         megasas_set_device_queue_depth(sdev);
1852         megasas_update_sdev_properties(sdev);
1853 
1854         /*
1855          * The RAID firmware may require extended timeouts.
1856          */
1857         blk_queue_rq_timeout(sdev->request_queue,
1858                 scmd_timeout * HZ);
1859 
1860         return 0;
1861 }
1862 
1863 static int megasas_slave_alloc(struct scsi_device *sdev)
1864 {
1865         u16 pd_index = 0;
1866         struct megasas_instance *instance ;
1867         struct MR_PRIV_DEVICE *mr_device_priv_data;
1868 
1869         instance = megasas_lookup_instance(sdev->host->host_no);
1870         if (sdev->channel < MEGASAS_MAX_PD_CHANNELS) {
1871                 /*
1872                  * Open the OS scan to the SYSTEM PD
1873                  */
1874                 pd_index =
1875                         (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1876                         sdev->id;
1877                 if ((instance->pd_list_not_supported ||
1878                         instance->pd_list[pd_index].driveState ==
1879                         MR_PD_STATE_SYSTEM)) {
1880                         goto scan_target;
1881                 }
1882                 return -ENXIO;
1883         }
1884 
1885 scan_target:
1886         mr_device_priv_data = kzalloc(sizeof(*mr_device_priv_data),
1887                                         GFP_KERNEL);
1888         if (!mr_device_priv_data)
1889                 return -ENOMEM;
1890         sdev->hostdata = mr_device_priv_data;
1891         return 0;
1892 }
1893 
1894 static void megasas_slave_destroy(struct scsi_device *sdev)
1895 {
1896         kfree(sdev->hostdata);
1897         sdev->hostdata = NULL;
1898 }
1899 
1900 /*
1901 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a
1902 *                                       kill adapter
1903 * @instance:                            Adapter soft state
1904 *
1905 */
1906 static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance)
1907 {
1908         int i;
1909         struct megasas_cmd *cmd_mfi;
1910         struct megasas_cmd_fusion *cmd_fusion;
1911         struct fusion_context *fusion = instance->ctrl_context;
1912 
1913         /* Find all outstanding ioctls */
1914         if (fusion) {
1915                 for (i = 0; i < instance->max_fw_cmds; i++) {
1916                         cmd_fusion = fusion->cmd_list[i];
1917                         if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) {
1918                                 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
1919                                 if (cmd_mfi->sync_cmd &&
1920                                         cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)
1921                                         megasas_complete_cmd(instance,
1922                                                              cmd_mfi, DID_OK);
1923                         }
1924                 }
1925         } else {
1926                 for (i = 0; i < instance->max_fw_cmds; i++) {
1927                         cmd_mfi = instance->cmd_list[i];
1928                         if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd !=
1929                                 MFI_CMD_ABORT)
1930                                 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
1931                 }
1932         }
1933 }
1934 
1935 
1936 void megaraid_sas_kill_hba(struct megasas_instance *instance)
1937 {
1938         /* Set critical error to block I/O & ioctls in case caller didn't */
1939         atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
1940         /* Wait 1 second to ensure IO or ioctls in build have posted */
1941         msleep(1000);
1942         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1943                 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
1944                 (instance->ctrl_context)) {
1945                 writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
1946                 /* Flush */
1947                 readl(&instance->reg_set->doorbell);
1948                 if (instance->requestorId && instance->peerIsPresent)
1949                         memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
1950         } else {
1951                 writel(MFI_STOP_ADP,
1952                         &instance->reg_set->inbound_doorbell);
1953         }
1954         /* Complete outstanding ioctls when adapter is killed */
1955         megasas_complete_outstanding_ioctls(instance);
1956 }
1957 
1958  /**
1959   * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
1960   *                                     restored to max value
1961   * @instance:                  Adapter soft state
1962   *
1963   */
1964 void
1965 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
1966 {
1967         unsigned long flags;
1968 
1969         if (instance->flag & MEGASAS_FW_BUSY
1970             && time_after(jiffies, instance->last_time + 5 * HZ)
1971             && atomic_read(&instance->fw_outstanding) <
1972             instance->throttlequeuedepth + 1) {
1973 
1974                 spin_lock_irqsave(instance->host->host_lock, flags);
1975                 instance->flag &= ~MEGASAS_FW_BUSY;
1976 
1977                 instance->host->can_queue = instance->cur_can_queue;
1978                 spin_unlock_irqrestore(instance->host->host_lock, flags);
1979         }
1980 }
1981 
1982 /**
1983  * megasas_complete_cmd_dpc      -      Returns FW's controller structure
1984  * @instance_addr:                      Address of adapter soft state
1985  *
1986  * Tasklet to complete cmds
1987  */
1988 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
1989 {
1990         u32 producer;
1991         u32 consumer;
1992         u32 context;
1993         struct megasas_cmd *cmd;
1994         struct megasas_instance *instance =
1995                                 (struct megasas_instance *)instance_addr;
1996         unsigned long flags;
1997 
1998         /* If we have already declared adapter dead, donot complete cmds */
1999         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
2000                 return;
2001 
2002         spin_lock_irqsave(&instance->completion_lock, flags);
2003 
2004         producer = le32_to_cpu(*instance->producer);
2005         consumer = le32_to_cpu(*instance->consumer);
2006 
2007         while (consumer != producer) {
2008                 context = le32_to_cpu(instance->reply_queue[consumer]);
2009                 if (context >= instance->max_fw_cmds) {
2010                         dev_err(&instance->pdev->dev, "Unexpected context value %x\n",
2011                                 context);
2012                         BUG();
2013                 }
2014 
2015                 cmd = instance->cmd_list[context];
2016 
2017                 megasas_complete_cmd(instance, cmd, DID_OK);
2018 
2019                 consumer++;
2020                 if (consumer == (instance->max_fw_cmds + 1)) {
2021                         consumer = 0;
2022                 }
2023         }
2024 
2025         *instance->consumer = cpu_to_le32(producer);
2026 
2027         spin_unlock_irqrestore(&instance->completion_lock, flags);
2028 
2029         /*
2030          * Check if we can restore can_queue
2031          */
2032         megasas_check_and_restore_queue_depth(instance);
2033 }
2034 
2035 /**
2036  * megasas_start_timer - Initializes a timer object
2037  * @instance:           Adapter soft state
2038  * @timer:              timer object to be initialized
2039  * @fn:                 timer function
2040  * @interval:           time interval between timer function call
2041  *
2042  */
2043 void megasas_start_timer(struct megasas_instance *instance,
2044                         struct timer_list *timer,
2045                         void *fn, unsigned long interval)
2046 {
2047         init_timer(timer);
2048         timer->expires = jiffies + interval;
2049         timer->data = (unsigned long)instance;
2050         timer->function = fn;
2051         add_timer(timer);
2052 }
2053 
2054 static void
2055 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
2056 
2057 static void
2058 process_fw_state_change_wq(struct work_struct *work);
2059 
2060 void megasas_do_ocr(struct megasas_instance *instance)
2061 {
2062         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2063         (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2064         (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2065                 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
2066         }
2067         instance->instancet->disable_intr(instance);
2068         atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
2069         instance->issuepend_done = 0;
2070 
2071         atomic_set(&instance->fw_outstanding, 0);
2072         megasas_internal_reset_defer_cmds(instance);
2073         process_fw_state_change_wq(&instance->work_init);
2074 }
2075 
2076 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
2077                                             int initial)
2078 {
2079         struct megasas_cmd *cmd;
2080         struct megasas_dcmd_frame *dcmd;
2081         struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
2082         dma_addr_t new_affiliation_111_h;
2083         int ld, retval = 0;
2084         u8 thisVf;
2085 
2086         cmd = megasas_get_cmd(instance);
2087 
2088         if (!cmd) {
2089                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:"
2090                        "Failed to get cmd for scsi%d\n",
2091                         instance->host->host_no);
2092                 return -ENOMEM;
2093         }
2094 
2095         dcmd = &cmd->frame->dcmd;
2096 
2097         if (!instance->vf_affiliation_111) {
2098                 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2099                        "affiliation for scsi%d\n", instance->host->host_no);
2100                 megasas_return_cmd(instance, cmd);
2101                 return -ENOMEM;
2102         }
2103 
2104         if (initial)
2105                         memset(instance->vf_affiliation_111, 0,
2106                                sizeof(struct MR_LD_VF_AFFILIATION_111));
2107         else {
2108                 new_affiliation_111 =
2109                         pci_alloc_consistent(instance->pdev,
2110                                              sizeof(struct MR_LD_VF_AFFILIATION_111),
2111                                              &new_affiliation_111_h);
2112                 if (!new_affiliation_111) {
2113                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2114                                "memory for new affiliation for scsi%d\n",
2115                                instance->host->host_no);
2116                         megasas_return_cmd(instance, cmd);
2117                         return -ENOMEM;
2118                 }
2119                 memset(new_affiliation_111, 0,
2120                        sizeof(struct MR_LD_VF_AFFILIATION_111));
2121         }
2122 
2123         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2124 
2125         dcmd->cmd = MFI_CMD_DCMD;
2126         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2127         dcmd->sge_count = 1;
2128         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2129         dcmd->timeout = 0;
2130         dcmd->pad_0 = 0;
2131         dcmd->data_xfer_len =
2132                 cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111));
2133         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111);
2134 
2135         if (initial)
2136                 dcmd->sgl.sge32[0].phys_addr =
2137                         cpu_to_le32(instance->vf_affiliation_111_h);
2138         else
2139                 dcmd->sgl.sge32[0].phys_addr =
2140                         cpu_to_le32(new_affiliation_111_h);
2141 
2142         dcmd->sgl.sge32[0].length = cpu_to_le32(
2143                 sizeof(struct MR_LD_VF_AFFILIATION_111));
2144 
2145         dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2146                "scsi%d\n", instance->host->host_no);
2147 
2148         if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2149                 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2150                        " failed with status 0x%x for scsi%d\n",
2151                        dcmd->cmd_status, instance->host->host_no);
2152                 retval = 1; /* Do a scan if we couldn't get affiliation */
2153                 goto out;
2154         }
2155 
2156         if (!initial) {
2157                 thisVf = new_affiliation_111->thisVf;
2158                 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
2159                         if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
2160                             new_affiliation_111->map[ld].policy[thisVf]) {
2161                                 dev_warn(&instance->pdev->dev, "SR-IOV: "
2162                                        "Got new LD/VF affiliation for scsi%d\n",
2163                                        instance->host->host_no);
2164                                 memcpy(instance->vf_affiliation_111,
2165                                        new_affiliation_111,
2166                                        sizeof(struct MR_LD_VF_AFFILIATION_111));
2167                                 retval = 1;
2168                                 goto out;
2169                         }
2170         }
2171 out:
2172         if (new_affiliation_111) {
2173                 pci_free_consistent(instance->pdev,
2174                                     sizeof(struct MR_LD_VF_AFFILIATION_111),
2175                                     new_affiliation_111,
2176                                     new_affiliation_111_h);
2177         }
2178 
2179         megasas_return_cmd(instance, cmd);
2180 
2181         return retval;
2182 }
2183 
2184 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
2185                                             int initial)
2186 {
2187         struct megasas_cmd *cmd;
2188         struct megasas_dcmd_frame *dcmd;
2189         struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
2190         struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
2191         dma_addr_t new_affiliation_h;
2192         int i, j, retval = 0, found = 0, doscan = 0;
2193         u8 thisVf;
2194 
2195         cmd = megasas_get_cmd(instance);
2196 
2197         if (!cmd) {
2198                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: "
2199                        "Failed to get cmd for scsi%d\n",
2200                        instance->host->host_no);
2201                 return -ENOMEM;
2202         }
2203 
2204         dcmd = &cmd->frame->dcmd;
2205 
2206         if (!instance->vf_affiliation) {
2207                 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2208                        "affiliation for scsi%d\n", instance->host->host_no);
2209                 megasas_return_cmd(instance, cmd);
2210                 return -ENOMEM;
2211         }
2212 
2213         if (initial)
2214                 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2215                        sizeof(struct MR_LD_VF_AFFILIATION));
2216         else {
2217                 new_affiliation =
2218                         pci_alloc_consistent(instance->pdev,
2219                                              (MAX_LOGICAL_DRIVES + 1) *
2220                                              sizeof(struct MR_LD_VF_AFFILIATION),
2221                                              &new_affiliation_h);
2222                 if (!new_affiliation) {
2223                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2224                                "memory for new affiliation for scsi%d\n",
2225                                instance->host->host_no);
2226                         megasas_return_cmd(instance, cmd);
2227                         return -ENOMEM;
2228                 }
2229                 memset(new_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2230                        sizeof(struct MR_LD_VF_AFFILIATION));
2231         }
2232 
2233         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2234 
2235         dcmd->cmd = MFI_CMD_DCMD;
2236         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2237         dcmd->sge_count = 1;
2238         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2239         dcmd->timeout = 0;
2240         dcmd->pad_0 = 0;
2241         dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2242                 sizeof(struct MR_LD_VF_AFFILIATION));
2243         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS);
2244 
2245         if (initial)
2246                 dcmd->sgl.sge32[0].phys_addr =
2247                         cpu_to_le32(instance->vf_affiliation_h);
2248         else
2249                 dcmd->sgl.sge32[0].phys_addr =
2250                         cpu_to_le32(new_affiliation_h);
2251 
2252         dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2253                 sizeof(struct MR_LD_VF_AFFILIATION));
2254 
2255         dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2256                "scsi%d\n", instance->host->host_no);
2257 
2258 
2259         if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2260                 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2261                        " failed with status 0x%x for scsi%d\n",
2262                        dcmd->cmd_status, instance->host->host_no);
2263                 retval = 1; /* Do a scan if we couldn't get affiliation */
2264                 goto out;
2265         }
2266 
2267         if (!initial) {
2268                 if (!new_affiliation->ldCount) {
2269                         dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2270                                "affiliation for passive path for scsi%d\n",
2271                                instance->host->host_no);
2272                         retval = 1;
2273                         goto out;
2274                 }
2275                 newmap = new_affiliation->map;
2276                 savedmap = instance->vf_affiliation->map;
2277                 thisVf = new_affiliation->thisVf;
2278                 for (i = 0 ; i < new_affiliation->ldCount; i++) {
2279                         found = 0;
2280                         for (j = 0; j < instance->vf_affiliation->ldCount;
2281                              j++) {
2282                                 if (newmap->ref.targetId ==
2283                                     savedmap->ref.targetId) {
2284                                         found = 1;
2285                                         if (newmap->policy[thisVf] !=
2286                                             savedmap->policy[thisVf]) {
2287                                                 doscan = 1;
2288                                                 goto out;
2289                                         }
2290                                 }
2291                                 savedmap = (struct MR_LD_VF_MAP *)
2292                                         ((unsigned char *)savedmap +
2293                                          savedmap->size);
2294                         }
2295                         if (!found && newmap->policy[thisVf] !=
2296                             MR_LD_ACCESS_HIDDEN) {
2297                                 doscan = 1;
2298                                 goto out;
2299                         }
2300                         newmap = (struct MR_LD_VF_MAP *)
2301                                 ((unsigned char *)newmap + newmap->size);
2302                 }
2303 
2304                 newmap = new_affiliation->map;
2305                 savedmap = instance->vf_affiliation->map;
2306 
2307                 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
2308                         found = 0;
2309                         for (j = 0 ; j < new_affiliation->ldCount; j++) {
2310                                 if (savedmap->ref.targetId ==
2311                                     newmap->ref.targetId) {
2312                                         found = 1;
2313                                         if (savedmap->policy[thisVf] !=
2314                                             newmap->policy[thisVf]) {
2315                                                 doscan = 1;
2316                                                 goto out;
2317                                         }
2318                                 }
2319                                 newmap = (struct MR_LD_VF_MAP *)
2320                                         ((unsigned char *)newmap +
2321                                          newmap->size);
2322                         }
2323                         if (!found && savedmap->policy[thisVf] !=
2324                             MR_LD_ACCESS_HIDDEN) {
2325                                 doscan = 1;
2326                                 goto out;
2327                         }
2328                         savedmap = (struct MR_LD_VF_MAP *)
2329                                 ((unsigned char *)savedmap +
2330                                  savedmap->size);
2331                 }
2332         }
2333 out:
2334         if (doscan) {
2335                 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2336                        "affiliation for scsi%d\n", instance->host->host_no);
2337                 memcpy(instance->vf_affiliation, new_affiliation,
2338                        new_affiliation->size);
2339                 retval = 1;
2340         }
2341 
2342         if (new_affiliation)
2343                 pci_free_consistent(instance->pdev,
2344                                     (MAX_LOGICAL_DRIVES + 1) *
2345                                     sizeof(struct MR_LD_VF_AFFILIATION),
2346                                     new_affiliation, new_affiliation_h);
2347         megasas_return_cmd(instance, cmd);
2348 
2349         return retval;
2350 }
2351 
2352 /* This function will get the current SR-IOV LD/VF affiliation */
2353 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
2354         int initial)
2355 {
2356         int retval;
2357 
2358         if (instance->PlasmaFW111)
2359                 retval = megasas_get_ld_vf_affiliation_111(instance, initial);
2360         else
2361                 retval = megasas_get_ld_vf_affiliation_12(instance, initial);
2362         return retval;
2363 }
2364 
2365 /* This function will tell FW to start the SR-IOV heartbeat */
2366 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2367                                          int initial)
2368 {
2369         struct megasas_cmd *cmd;
2370         struct megasas_dcmd_frame *dcmd;
2371         int retval = 0;
2372 
2373         cmd = megasas_get_cmd(instance);
2374 
2375         if (!cmd) {
2376                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: "
2377                        "Failed to get cmd for scsi%d\n",
2378                        instance->host->host_no);
2379                 return -ENOMEM;
2380         }
2381 
2382         dcmd = &cmd->frame->dcmd;
2383 
2384         if (initial) {
2385                 instance->hb_host_mem =
2386                         pci_zalloc_consistent(instance->pdev,
2387                                               sizeof(struct MR_CTRL_HB_HOST_MEM),
2388                                               &instance->hb_host_mem_h);
2389                 if (!instance->hb_host_mem) {
2390                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate"
2391                                " memory for heartbeat host memory for scsi%d\n",
2392                                instance->host->host_no);
2393                         retval = -ENOMEM;
2394                         goto out;
2395                 }
2396         }
2397 
2398         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2399 
2400         dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM));
2401         dcmd->cmd = MFI_CMD_DCMD;
2402         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2403         dcmd->sge_count = 1;
2404         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2405         dcmd->timeout = 0;
2406         dcmd->pad_0 = 0;
2407         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2408         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC);
2409         dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->hb_host_mem_h);
2410         dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2411 
2412         dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n",
2413                instance->host->host_no);
2414 
2415         if (instance->ctrl_context && !instance->mask_interrupts)
2416                 retval = megasas_issue_blocked_cmd(instance, cmd,
2417                         MEGASAS_ROUTINE_WAIT_TIME_VF);
2418         else
2419                 retval = megasas_issue_polled(instance, cmd);
2420 
2421         if (retval) {
2422                 dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2423                         "_MEM_ALLOC DCMD %s for scsi%d\n",
2424                         (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ?
2425                         "timed out" : "failed", instance->host->host_no);
2426                 retval = 1;
2427         }
2428 
2429 out:
2430         megasas_return_cmd(instance, cmd);
2431 
2432         return retval;
2433 }
2434 
2435 /* Handler for SR-IOV heartbeat */
2436 void megasas_sriov_heartbeat_handler(unsigned long instance_addr)
2437 {
2438         struct megasas_instance *instance =
2439                 (struct megasas_instance *)instance_addr;
2440 
2441         if (instance->hb_host_mem->HB.fwCounter !=
2442             instance->hb_host_mem->HB.driverCounter) {
2443                 instance->hb_host_mem->HB.driverCounter =
2444                         instance->hb_host_mem->HB.fwCounter;
2445                 mod_timer(&instance->sriov_heartbeat_timer,
2446                           jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2447         } else {
2448                 dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never "
2449                        "completed for scsi%d\n", instance->host->host_no);
2450                 schedule_work(&instance->work_init);
2451         }
2452 }
2453 
2454 /**
2455  * megasas_wait_for_outstanding -       Wait for all outstanding cmds
2456  * @instance:                           Adapter soft state
2457  *
2458  * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
2459  * complete all its outstanding commands. Returns error if one or more IOs
2460  * are pending after this time period. It also marks the controller dead.
2461  */
2462 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2463 {
2464         int i, sl, outstanding;
2465         u32 reset_index;
2466         u32 wait_time = MEGASAS_RESET_WAIT_TIME;
2467         unsigned long flags;
2468         struct list_head clist_local;
2469         struct megasas_cmd *reset_cmd;
2470         u32 fw_state;
2471 
2472         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2473                 dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n",
2474                 __func__, __LINE__);
2475                 return FAILED;
2476         }
2477 
2478         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2479 
2480                 INIT_LIST_HEAD(&clist_local);
2481                 spin_lock_irqsave(&instance->hba_lock, flags);
2482                 list_splice_init(&instance->internal_reset_pending_q,
2483                                 &clist_local);
2484                 spin_unlock_irqrestore(&instance->hba_lock, flags);
2485 
2486                 dev_notice(&instance->pdev->dev, "HBA reset wait ...\n");
2487                 for (i = 0; i < wait_time; i++) {
2488                         msleep(1000);
2489                         if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL)
2490                                 break;
2491                 }
2492 
2493                 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2494                         dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n");
2495                         atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2496                         return FAILED;
2497                 }
2498 
2499                 reset_index = 0;
2500                 while (!list_empty(&clist_local)) {
2501                         reset_cmd = list_entry((&clist_local)->next,
2502                                                 struct megasas_cmd, list);
2503                         list_del_init(&reset_cmd->list);
2504                         if (reset_cmd->scmd) {
2505                                 reset_cmd->scmd->result = DID_RESET << 16;
2506                                 dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n",
2507                                         reset_index, reset_cmd,
2508                                         reset_cmd->scmd->cmnd[0]);
2509 
2510                                 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
2511                                 megasas_return_cmd(instance, reset_cmd);
2512                         } else if (reset_cmd->sync_cmd) {
2513                                 dev_notice(&instance->pdev->dev, "%p synch cmds"
2514                                                 "reset queue\n",
2515                                                 reset_cmd);
2516 
2517                                 reset_cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
2518                                 instance->instancet->fire_cmd(instance,
2519                                                 reset_cmd->frame_phys_addr,
2520                                                 0, instance->reg_set);
2521                         } else {
2522                                 dev_notice(&instance->pdev->dev, "%p unexpected"
2523                                         "cmds lst\n",
2524                                         reset_cmd);
2525                         }
2526                         reset_index++;
2527                 }
2528 
2529                 return SUCCESS;
2530         }
2531 
2532         for (i = 0; i < resetwaittime; i++) {
2533                 outstanding = atomic_read(&instance->fw_outstanding);
2534 
2535                 if (!outstanding)
2536                         break;
2537 
2538                 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2539                         dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
2540                                "commands to complete\n",i,outstanding);
2541                         /*
2542                          * Call cmd completion routine. Cmd to be
2543                          * be completed directly without depending on isr.
2544                          */
2545                         megasas_complete_cmd_dpc((unsigned long)instance);
2546                 }
2547 
2548                 msleep(1000);
2549         }
2550 
2551         i = 0;
2552         outstanding = atomic_read(&instance->fw_outstanding);
2553         fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;
2554 
2555         if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2556                 goto no_outstanding;
2557 
2558         if (instance->disableOnlineCtrlReset)
2559                 goto kill_hba_and_failed;
2560         do {
2561                 if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) {
2562                         dev_info(&instance->pdev->dev,
2563                                 "%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, oustanding 0x%x\n",
2564                                 __func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding));
2565                         if (i == 3)
2566                                 goto kill_hba_and_failed;
2567                         megasas_do_ocr(instance);
2568 
2569                         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2570                                 dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n",
2571                                 __func__, __LINE__);
2572                                 return FAILED;
2573                         }
2574                         dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n",
2575                                 __func__, __LINE__);
2576 
2577                         for (sl = 0; sl < 10; sl++)
2578                                 msleep(500);
2579 
2580                         outstanding = atomic_read(&instance->fw_outstanding);
2581 
2582                         fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;
2583                         if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2584                                 goto no_outstanding;
2585                 }
2586                 i++;
2587         } while (i <= 3);
2588 
2589 no_outstanding:
2590 
2591         dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n",
2592                 __func__, __LINE__);
2593         return SUCCESS;
2594 
2595 kill_hba_and_failed:
2596 
2597         /* Reset not supported, kill adapter */
2598         dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d"
2599                 " disableOnlineCtrlReset %d fw_outstanding %d \n",
2600                 __func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset,
2601                 atomic_read(&instance->fw_outstanding));
2602         megasas_dump_pending_frames(instance);
2603         megaraid_sas_kill_hba(instance);
2604 
2605         return FAILED;
2606 }
2607 
2608 /**
2609  * megasas_generic_reset -      Generic reset routine
2610  * @scmd:                       Mid-layer SCSI command
2611  *
2612  * This routine implements a generic reset handler for device, bus and host
2613  * reset requests. Device, bus and host specific reset handlers can use this
2614  * function after they do their specific tasks.
2615  */
2616 static int megasas_generic_reset(struct scsi_cmnd *scmd)
2617 {
2618         int ret_val;
2619         struct megasas_instance *instance;
2620 
2621         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2622 
2623         scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2624                  scmd->cmnd[0], scmd->retries);
2625 
2626         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2627                 dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n");
2628                 return FAILED;
2629         }
2630 
2631         ret_val = megasas_wait_for_outstanding(instance);
2632         if (ret_val == SUCCESS)
2633                 dev_notice(&instance->pdev->dev, "reset successful\n");
2634         else
2635                 dev_err(&instance->pdev->dev, "failed to do reset\n");
2636 
2637         return ret_val;
2638 }
2639 
2640 /**
2641  * megasas_reset_timer - quiesce the adapter if required
2642  * @scmd:               scsi cmnd
2643  *
2644  * Sets the FW busy flag and reduces the host->can_queue if the
2645  * cmd has not been completed within the timeout period.
2646  */
2647 static enum
2648 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
2649 {
2650         struct megasas_instance *instance;
2651         unsigned long flags;
2652 
2653         if (time_after(jiffies, scmd->jiffies_at_alloc +
2654                                 (scmd_timeout * 2) * HZ)) {
2655                 return BLK_EH_NOT_HANDLED;
2656         }
2657 
2658         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2659         if (!(instance->flag & MEGASAS_FW_BUSY)) {
2660                 /* FW is busy, throttle IO */
2661                 spin_lock_irqsave(instance->host->host_lock, flags);
2662 
2663                 instance->host->can_queue = instance->throttlequeuedepth;
2664                 instance->last_time = jiffies;
2665                 instance->flag |= MEGASAS_FW_BUSY;
2666 
2667                 spin_unlock_irqrestore(instance->host->host_lock, flags);
2668         }
2669         return BLK_EH_RESET_TIMER;
2670 }
2671 
2672 /**
2673  * megasas_reset_bus_host -     Bus & host reset handler entry point
2674  */
2675 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
2676 {
2677         int ret;
2678         struct megasas_instance *instance;
2679 
2680         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2681 
2682         /*
2683          * First wait for all commands to complete
2684          */
2685         if (instance->ctrl_context)
2686                 ret = megasas_reset_fusion(scmd->device->host, 1);
2687         else
2688                 ret = megasas_generic_reset(scmd);
2689 
2690         return ret;
2691 }
2692 
2693 /**
2694  * megasas_task_abort - Issues task abort request to firmware
2695  *                      (supported only for fusion adapters)
2696  * @scmd:               SCSI command pointer
2697  */
2698 static int megasas_task_abort(struct scsi_cmnd *scmd)
2699 {
2700         int ret;
2701         struct megasas_instance *instance;
2702 
2703         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2704 
2705         if (instance->ctrl_context)
2706                 ret = megasas_task_abort_fusion(scmd);
2707         else {
2708                 sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n");
2709                 ret = FAILED;
2710         }
2711 
2712         return ret;
2713 }
2714 
2715 /**
2716  * megasas_reset_target:  Issues target reset request to firmware
2717  *                        (supported only for fusion adapters)
2718  * @scmd:                 SCSI command pointer
2719  */
2720 static int megasas_reset_target(struct scsi_cmnd *scmd)
2721 {
2722         int ret;
2723         struct megasas_instance *instance;
2724 
2725         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2726 
2727         if (instance->ctrl_context)
2728                 ret = megasas_reset_target_fusion(scmd);
2729         else {
2730                 sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n");
2731                 ret = FAILED;
2732         }
2733 
2734         return ret;
2735 }
2736 
2737 /**
2738  * megasas_bios_param - Returns disk geometry for a disk
2739  * @sdev:               device handle
2740  * @bdev:               block device
2741  * @capacity:           drive capacity
2742  * @geom:               geometry parameters
2743  */
2744 static int
2745 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
2746                  sector_t capacity, int geom[])
2747 {
2748         int heads;
2749         int sectors;
2750         sector_t cylinders;
2751         unsigned long tmp;
2752 
2753         /* Default heads (64) & sectors (32) */
2754         heads = 64;
2755         sectors = 32;
2756 
2757         tmp = heads * sectors;
2758         cylinders = capacity;
2759 
2760         sector_div(cylinders, tmp);
2761 
2762         /*
2763          * Handle extended translation size for logical drives > 1Gb
2764          */
2765 
2766         if (capacity >= 0x200000) {
2767                 heads = 255;
2768                 sectors = 63;
2769                 tmp = heads*sectors;
2770                 cylinders = capacity;
2771                 sector_div(cylinders, tmp);
2772         }
2773 
2774         geom[0] = heads;
2775         geom[1] = sectors;
2776         geom[2] = cylinders;
2777 
2778         return 0;
2779 }
2780 
2781 static void megasas_aen_polling(struct work_struct *work);
2782 
2783 /**
2784  * megasas_service_aen -        Processes an event notification
2785  * @instance:                   Adapter soft state
2786  * @cmd:                        AEN command completed by the ISR
2787  *
2788  * For AEN, driver sends a command down to FW that is held by the FW till an
2789  * event occurs. When an event of interest occurs, FW completes the command
2790  * that it was previously holding.
2791  *
2792  * This routines sends SIGIO signal to processes that have registered with the
2793  * driver for AEN.
2794  */
2795 static void
2796 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
2797 {
2798         unsigned long flags;
2799 
2800         /*
2801          * Don't signal app if it is just an aborted previously registered aen
2802          */
2803         if ((!cmd->abort_aen) && (instance->unload == 0)) {
2804                 spin_lock_irqsave(&poll_aen_lock, flags);
2805                 megasas_poll_wait_aen = 1;
2806                 spin_unlock_irqrestore(&poll_aen_lock, flags);
2807                 wake_up(&megasas_poll_wait);
2808                 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
2809         }
2810         else
2811                 cmd->abort_aen = 0;
2812 
2813         instance->aen_cmd = NULL;
2814 
2815         megasas_return_cmd(instance, cmd);
2816 
2817         if ((instance->unload == 0) &&
2818                 ((instance->issuepend_done == 1))) {
2819                 struct megasas_aen_event *ev;
2820 
2821                 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
2822                 if (!ev) {
2823                         dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n");
2824                 } else {
2825                         ev->instance = instance;
2826                         instance->ev = ev;
2827                         INIT_DELAYED_WORK(&ev->hotplug_work,
2828                                           megasas_aen_polling);
2829                         schedule_delayed_work(&ev->hotplug_work, 0);
2830                 }
2831         }
2832 }
2833 
2834 static ssize_t
2835 megasas_fw_crash_buffer_store(struct device *cdev,
2836         struct device_attribute *attr, const char *buf, size_t count)
2837 {
2838         struct Scsi_Host *shost = class_to_shost(cdev);
2839         struct megasas_instance *instance =
2840                 (struct megasas_instance *) shost->hostdata;
2841         int val = 0;
2842         unsigned long flags;
2843 
2844         if (kstrtoint(buf, 0, &val) != 0)
2845                 return -EINVAL;
2846 
2847         spin_lock_irqsave(&instance->crashdump_lock, flags);
2848         instance->fw_crash_buffer_offset = val;
2849         spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2850         return strlen(buf);
2851 }
2852 
2853 static ssize_t
2854 megasas_fw_crash_buffer_show(struct device *cdev,
2855         struct device_attribute *attr, char *buf)
2856 {
2857         struct Scsi_Host *shost = class_to_shost(cdev);
2858         struct megasas_instance *instance =
2859                 (struct megasas_instance *) shost->hostdata;
2860         u32 size;
2861         unsigned long buff_addr;
2862         unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
2863         unsigned long src_addr;
2864         unsigned long flags;
2865         u32 buff_offset;
2866 
2867         spin_lock_irqsave(&instance->crashdump_lock, flags);
2868         buff_offset = instance->fw_crash_buffer_offset;
2869         if (!instance->crash_dump_buf &&
2870                 !((instance->fw_crash_state == AVAILABLE) ||
2871                 (instance->fw_crash_state == COPYING))) {
2872                 dev_err(&instance->pdev->dev,
2873                         "Firmware crash dump is not available\n");
2874                 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2875                 return -EINVAL;
2876         }
2877 
2878         buff_addr = (unsigned long) buf;
2879 
2880         if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) {
2881                 dev_err(&instance->pdev->dev,
2882                         "Firmware crash dump offset is out of range\n");
2883                 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2884                 return 0;
2885         }
2886 
2887         size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
2888         size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
2889 
2890         src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
2891                 (buff_offset % dmachunk);
2892         memcpy(buf, (void *)src_addr, size);
2893         spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2894 
2895         return size;
2896 }
2897 
2898 static ssize_t
2899 megasas_fw_crash_buffer_size_show(struct device *cdev,
2900         struct device_attribute *attr, char *buf)
2901 {
2902         struct Scsi_Host *shost = class_to_shost(cdev);
2903         struct megasas_instance *instance =
2904                 (struct megasas_instance *) shost->hostdata;
2905 
2906         return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
2907                 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
2908 }
2909 
2910 static ssize_t
2911 megasas_fw_crash_state_store(struct device *cdev,
2912         struct device_attribute *attr, const char *buf, size_t count)
2913 {
2914         struct Scsi_Host *shost = class_to_shost(cdev);
2915         struct megasas_instance *instance =
2916                 (struct megasas_instance *) shost->hostdata;
2917         int val = 0;
2918         unsigned long flags;
2919 
2920         if (kstrtoint(buf, 0, &val) != 0)
2921                 return -EINVAL;
2922 
2923         if ((val <= AVAILABLE || val > COPY_ERROR)) {
2924                 dev_err(&instance->pdev->dev, "application updates invalid "
2925                         "firmware crash state\n");
2926                 return -EINVAL;
2927         }
2928 
2929         instance->fw_crash_state = val;
2930 
2931         if ((val == COPIED) || (val == COPY_ERROR)) {
2932                 spin_lock_irqsave(&instance->crashdump_lock, flags);
2933                 megasas_free_host_crash_buffer(instance);
2934                 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2935                 if (val == COPY_ERROR)
2936                         dev_info(&instance->pdev->dev, "application failed to "
2937                                 "copy Firmware crash dump\n");
2938                 else
2939                         dev_info(&instance->pdev->dev, "Firmware crash dump "
2940                                 "copied successfully\n");
2941         }
2942         return strlen(buf);
2943 }
2944 
2945 static ssize_t
2946 megasas_fw_crash_state_show(struct device *cdev,
2947         struct device_attribute *attr, char *buf)
2948 {
2949         struct Scsi_Host *shost = class_to_shost(cdev);
2950         struct megasas_instance *instance =
2951                 (struct megasas_instance *) shost->hostdata;
2952 
2953         return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
2954 }
2955 
2956 static ssize_t
2957 megasas_page_size_show(struct device *cdev,
2958         struct device_attribute *attr, char *buf)
2959 {
2960         return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
2961 }
2962 
2963 static ssize_t
2964 megasas_ldio_outstanding_show(struct device *cdev, struct device_attribute *attr,
2965         char *buf)
2966 {
2967         struct Scsi_Host *shost = class_to_shost(cdev);
2968         struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
2969 
2970         return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding));
2971 }
2972 
2973 static DEVICE_ATTR(fw_crash_buffer, S_IRUGO | S_IWUSR,
2974         megasas_fw_crash_buffer_show, megasas_fw_crash_buffer_store);
2975 static DEVICE_ATTR(fw_crash_buffer_size, S_IRUGO,
2976         megasas_fw_crash_buffer_size_show, NULL);
2977 static DEVICE_ATTR(fw_crash_state, S_IRUGO | S_IWUSR,
2978         megasas_fw_crash_state_show, megasas_fw_crash_state_store);
2979 static DEVICE_ATTR(page_size, S_IRUGO,
2980         megasas_page_size_show, NULL);
2981 static DEVICE_ATTR(ldio_outstanding, S_IRUGO,
2982         megasas_ldio_outstanding_show, NULL);
2983 
2984 struct device_attribute *megaraid_host_attrs[] = {
2985         &dev_attr_fw_crash_buffer_size,
2986         &dev_attr_fw_crash_buffer,
2987         &dev_attr_fw_crash_state,
2988         &dev_attr_page_size,
2989         &dev_attr_ldio_outstanding,
2990         NULL,
2991 };
2992 
2993 /*
2994  * Scsi host template for megaraid_sas driver
2995  */
2996 static struct scsi_host_template megasas_template = {
2997 
2998         .module = THIS_MODULE,
2999         .name = "Avago SAS based MegaRAID driver",
3000         .proc_name = "megaraid_sas",
3001         .slave_configure = megasas_slave_configure,
3002         .slave_alloc = megasas_slave_alloc,
3003         .slave_destroy = megasas_slave_destroy,
3004         .queuecommand = megasas_queue_command,
3005         .eh_target_reset_handler = megasas_reset_target,
3006         .eh_abort_handler = megasas_task_abort,
3007         .eh_host_reset_handler = megasas_reset_bus_host,
3008         .eh_timed_out = megasas_reset_timer,
3009         .shost_attrs = megaraid_host_attrs,
3010         .bios_param = megasas_bios_param,
3011         .use_clustering = ENABLE_CLUSTERING,
3012         .change_queue_depth = scsi_change_queue_depth,
3013         .no_write_same = 1,
3014 };
3015 
3016 /**
3017  * megasas_complete_int_cmd -   Completes an internal command
3018  * @instance:                   Adapter soft state
3019  * @cmd:                        Command to be completed
3020  *
3021  * The megasas_issue_blocked_cmd() function waits for a command to complete
3022  * after it issues a command. This function wakes up that waiting routine by
3023  * calling wake_up() on the wait queue.
3024  */
3025 static void
3026 megasas_complete_int_cmd(struct megasas_instance *instance,
3027                          struct megasas_cmd *cmd)
3028 {
3029         cmd->cmd_status_drv = cmd->frame->io.cmd_status;
3030         wake_up(&instance->int_cmd_wait_q);
3031 }
3032 
3033 /**
3034  * megasas_complete_abort -     Completes aborting a command
3035  * @instance:                   Adapter soft state
3036  * @cmd:                        Cmd that was issued to abort another cmd
3037  *
3038  * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
3039  * after it issues an abort on a previously issued command. This function
3040  * wakes up all functions waiting on the same wait queue.
3041  */
3042 static void
3043 megasas_complete_abort(struct megasas_instance *instance,
3044                        struct megasas_cmd *cmd)
3045 {
3046         if (cmd->sync_cmd) {
3047                 cmd->sync_cmd = 0;
3048                 cmd->cmd_status_drv = 0;
3049                 wake_up(&instance->abort_cmd_wait_q);
3050         }
3051 }
3052 
3053 /**
3054  * megasas_complete_cmd -       Completes a command
3055  * @instance:                   Adapter soft state
3056  * @cmd:                        Command to be completed
3057  * @alt_status:                 If non-zero, use this value as status to
3058  *                              SCSI mid-layer instead of the value returned
3059  *                              by the FW. This should be used if caller wants
3060  *                              an alternate status (as in the case of aborted
3061  *                              commands)
3062  */
3063 void
3064 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
3065                      u8 alt_status)
3066 {
3067         int exception = 0;
3068         struct megasas_header *hdr = &cmd->frame->hdr;
3069         unsigned long flags;
3070         struct fusion_context *fusion = instance->ctrl_context;
3071         u32 opcode, status;
3072 
3073         /* flag for the retry reset */
3074         cmd->retry_for_fw_reset = 0;
3075 
3076         if (cmd->scmd)
3077                 cmd->scmd->SCp.ptr = NULL;
3078 
3079         switch (hdr->cmd) {
3080         case MFI_CMD_INVALID:
3081                 /* Some older 1068 controller FW may keep a pended
3082                    MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
3083                    when booting the kdump kernel.  Ignore this command to
3084                    prevent a kernel panic on shutdown of the kdump kernel. */
3085                 dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command "
3086                        "completed\n");
3087                 dev_warn(&instance->pdev->dev, "If you have a controller "
3088                        "other than PERC5, please upgrade your firmware\n");
3089                 break;
3090         case MFI_CMD_PD_SCSI_IO:
3091         case MFI_CMD_LD_SCSI_IO:
3092 
3093                 /*
3094                  * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
3095                  * issued either through an IO path or an IOCTL path. If it
3096                  * was via IOCTL, we will send it to internal completion.
3097                  */
3098                 if (cmd->sync_cmd) {
3099                         cmd->sync_cmd = 0;
3100                         megasas_complete_int_cmd(instance, cmd);
3101                         break;
3102                 }
3103 
3104         case MFI_CMD_LD_READ:
3105         case MFI_CMD_LD_WRITE:
3106 
3107                 if (alt_status) {
3108                         cmd->scmd->result = alt_status << 16;
3109                         exception = 1;
3110                 }
3111 
3112                 if (exception) {
3113 
3114                         atomic_dec(&instance->fw_outstanding);
3115 
3116                         scsi_dma_unmap(cmd->scmd);
3117                         cmd->scmd->scsi_done(cmd->scmd);
3118                         megasas_return_cmd(instance, cmd);
3119 
3120                         break;
3121                 }
3122 
3123                 switch (hdr->cmd_status) {
3124 
3125                 case MFI_STAT_OK:
3126                         cmd->scmd->result = DID_OK << 16;
3127                         break;
3128 
3129                 case MFI_STAT_SCSI_IO_FAILED:
3130                 case MFI_STAT_LD_INIT_IN_PROGRESS:
3131                         cmd->scmd->result =
3132                             (DID_ERROR << 16) | hdr->scsi_status;
3133                         break;
3134 
3135                 case MFI_STAT_SCSI_DONE_WITH_ERROR:
3136 
3137                         cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
3138 
3139                         if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
3140                                 memset(cmd->scmd->sense_buffer, 0,
3141                                        SCSI_SENSE_BUFFERSIZE);
3142                                 memcpy(cmd->scmd->sense_buffer, cmd->sense,
3143                                        hdr->sense_len);
3144 
3145                                 cmd->scmd->result |= DRIVER_SENSE << 24;
3146                         }
3147 
3148                         break;
3149 
3150                 case MFI_STAT_LD_OFFLINE:
3151                 case MFI_STAT_DEVICE_NOT_FOUND:
3152                         cmd->scmd->result = DID_BAD_TARGET << 16;
3153                         break;
3154 
3155                 default:
3156                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n",
3157                                hdr->cmd_status);
3158                         cmd->scmd->result = DID_ERROR << 16;
3159                         break;
3160                 }
3161 
3162                 atomic_dec(&instance->fw_outstanding);
3163 
3164                 scsi_dma_unmap(cmd->scmd);
3165                 cmd->scmd->scsi_done(cmd->scmd);
3166                 megasas_return_cmd(instance, cmd);
3167 
3168                 break;
3169 
3170         case MFI_CMD_SMP:
3171         case MFI_CMD_STP:
3172         case MFI_CMD_DCMD:
3173                 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
3174                 /* Check for LD map update */
3175                 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
3176                         && (cmd->frame->dcmd.mbox.b[1] == 1)) {
3177                         fusion->fast_path_io = 0;
3178                         spin_lock_irqsave(instance->host->host_lock, flags);
3179                         instance->map_update_cmd = NULL;
3180                         if (cmd->frame->hdr.cmd_status != 0) {
3181                                 if (cmd->frame->hdr.cmd_status !=
3182                                     MFI_STAT_NOT_FOUND)
3183                                         dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n",
3184                                                cmd->frame->hdr.cmd_status);
3185                                 else {
3186                                         megasas_return_cmd(instance, cmd);
3187                                         spin_unlock_irqrestore(
3188                                                 instance->host->host_lock,
3189                                                 flags);
3190                                         break;
3191                                 }
3192                         } else
3193                                 instance->map_id++;
3194                         megasas_return_cmd(instance, cmd);
3195 
3196                         /*
3197                          * Set fast path IO to ZERO.
3198                          * Validate Map will set proper value.
3199                          * Meanwhile all IOs will go as LD IO.
3200                          */
3201                         if (MR_ValidateMapInfo(instance))
3202                                 fusion->fast_path_io = 1;
3203                         else
3204                                 fusion->fast_path_io = 0;
3205                         megasas_sync_map_info(instance);
3206                         spin_unlock_irqrestore(instance->host->host_lock,
3207                                                flags);
3208                         break;
3209                 }
3210                 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
3211                     opcode == MR_DCMD_CTRL_EVENT_GET) {
3212                         spin_lock_irqsave(&poll_aen_lock, flags);
3213                         megasas_poll_wait_aen = 0;
3214                         spin_unlock_irqrestore(&poll_aen_lock, flags);
3215                 }
3216 
3217                 /* FW has an updated PD sequence */
3218                 if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
3219                         (cmd->frame->dcmd.mbox.b[0] == 1)) {
3220 
3221                         spin_lock_irqsave(instance->host->host_lock, flags);
3222                         status = cmd->frame->hdr.cmd_status;
3223                         instance->jbod_seq_cmd = NULL;
3224                         megasas_return_cmd(instance, cmd);
3225 
3226                         if (status == MFI_STAT_OK) {
3227                                 instance->pd_seq_map_id++;
3228                                 /* Re-register a pd sync seq num cmd */
3229                                 if (megasas_sync_pd_seq_num(instance, true))
3230                                         instance->use_seqnum_jbod_fp = false;
3231                         } else
3232                                 instance->use_seqnum_jbod_fp = false;
3233 
3234                         spin_unlock_irqrestore(instance->host->host_lock, flags);
3235                         break;
3236                 }
3237 
3238                 /*
3239                  * See if got an event notification
3240                  */
3241                 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
3242                         megasas_service_aen(instance, cmd);
3243                 else
3244                         megasas_complete_int_cmd(instance, cmd);
3245 
3246                 break;
3247 
3248         case MFI_CMD_ABORT:
3249                 /*
3250                  * Cmd issued to abort another cmd returned
3251                  */
3252                 megasas_complete_abort(instance, cmd);
3253                 break;
3254 
3255         default:
3256                 dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n",
3257                        hdr->cmd);
3258                 break;
3259         }
3260 }
3261 
3262 /**
3263  * megasas_issue_pending_cmds_again -   issue all pending cmds
3264  *                                      in FW again because of the fw reset
3265  * @instance:                           Adapter soft state
3266  */
3267 static inline void
3268 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
3269 {
3270         struct megasas_cmd *cmd;
3271         struct list_head clist_local;
3272         union megasas_evt_class_locale class_locale;
3273         unsigned long flags;
3274         u32 seq_num;
3275 
3276         INIT_LIST_HEAD(&clist_local);
3277         spin_lock_irqsave(&instance->hba_lock, flags);
3278         list_splice_init(&instance->internal_reset_pending_q, &clist_local);
3279         spin_unlock_irqrestore(&instance->hba_lock, flags);
3280 
3281         while (!list_empty(&clist_local)) {
3282                 cmd = list_entry((&clist_local)->next,
3283                                         struct megasas_cmd, list);
3284                 list_del_init(&cmd->list);
3285 
3286                 if (cmd->sync_cmd || cmd->scmd) {
3287                         dev_notice(&instance->pdev->dev, "command %p, %p:%d"
3288                                 "detected to be pending while HBA reset\n",
3289                                         cmd, cmd->scmd, cmd->sync_cmd);
3290 
3291                         cmd->retry_for_fw_reset++;
3292 
3293                         if (cmd->retry_for_fw_reset == 3) {
3294                                 dev_notice(&instance->pdev->dev, "cmd %p, %p:%d"
3295                                         "was tried multiple times during reset."
3296                                         "Shutting down the HBA\n",
3297                                         cmd, cmd->scmd, cmd->sync_cmd);
3298                                 instance->instancet->disable_intr(instance);
3299                                 atomic_set(&instance->fw_reset_no_pci_access, 1);
3300                                 megaraid_sas_kill_hba(instance);
3301                                 return;
3302                         }
3303                 }
3304 
3305                 if (cmd->sync_cmd == 1) {
3306                         if (cmd->scmd) {
3307                                 dev_notice(&instance->pdev->dev, "unexpected"
3308                                         "cmd attached to internal command!\n");
3309                         }
3310                         dev_notice(&instance->pdev->dev, "%p synchronous cmd"
3311                                                 "on the internal reset queue,"
3312                                                 "issue it again.\n", cmd);
3313                         cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
3314                         instance->instancet->fire_cmd(instance,
3315                                                         cmd->frame_phys_addr,
3316                                                         0, instance->reg_set);
3317                 } else if (cmd->scmd) {
3318                         dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]"
3319                         "detected on the internal queue, issue again.\n",
3320                         cmd, cmd->scmd->cmnd[0]);
3321 
3322                         atomic_inc(&instance->fw_outstanding);
3323                         instance->instancet->fire_cmd(instance,
3324                                         cmd->frame_phys_addr,
3325                                         cmd->frame_count-1, instance->reg_set);
3326                 } else {
3327                         dev_notice(&instance->pdev->dev, "%p unexpected cmd on the"
3328                                 "internal reset defer list while re-issue!!\n",
3329                                 cmd);
3330                 }
3331         }
3332 
3333         if (instance->aen_cmd) {
3334                 dev_notice(&instance->pdev->dev, "aen_cmd in def process\n");
3335                 megasas_return_cmd(instance, instance->aen_cmd);
3336 
3337                 instance->aen_cmd = NULL;
3338         }
3339 
3340         /*
3341          * Initiate AEN (Asynchronous Event Notification)
3342          */
3343         seq_num = instance->last_seq_num;
3344         class_locale.members.reserved = 0;
3345         class_locale.members.locale = MR_EVT_LOCALE_ALL;
3346         class_locale.members.class = MR_EVT_CLASS_DEBUG;
3347 
3348         megasas_register_aen(instance, seq_num, class_locale.word);
3349 }
3350 
3351 /**
3352  * Move the internal reset pending commands to a deferred queue.
3353  *
3354  * We move the commands pending at internal reset time to a
3355  * pending queue. This queue would be flushed after successful
3356  * completion of the internal reset sequence. if the internal reset
3357  * did not complete in time, the kernel reset handler would flush
3358  * these commands.
3359  **/
3360 static void
3361 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
3362 {
3363         struct megasas_cmd *cmd;
3364         int i;
3365         u32 max_cmd = instance->max_fw_cmds;
3366         u32 defer_index;
3367         unsigned long flags;
3368 
3369         defer_index = 0;
3370         spin_lock_irqsave(&instance->mfi_pool_lock, flags);
3371         for (i = 0; i < max_cmd; i++) {
3372                 cmd = instance->cmd_list[i];
3373                 if (cmd->sync_cmd == 1 || cmd->scmd) {
3374                         dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p"
3375                                         "on the defer queue as internal\n",
3376                                 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
3377 
3378                         if (!list_empty(&cmd->list)) {
3379                                 dev_notice(&instance->pdev->dev, "ERROR while"
3380                                         " moving this cmd:%p, %d %p, it was"
3381                                         "discovered on some list?\n",
3382                                         cmd, cmd->sync_cmd, cmd->scmd);
3383 
3384                                 list_del_init(&cmd->list);
3385                         }
3386                         defer_index++;
3387                         list_add_tail(&cmd->list,
3388                                 &instance->internal_reset_pending_q);
3389                 }
3390         }
3391         spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
3392 }
3393 
3394 
3395 static void
3396 process_fw_state_change_wq(struct work_struct *work)
3397 {
3398         struct megasas_instance *instance =
3399                 container_of(work, struct megasas_instance, work_init);
3400         u32 wait;
3401         unsigned long flags;
3402 
3403     if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) {
3404                 dev_notice(&instance->pdev->dev, "error, recovery st %x\n",
3405                                 atomic_read(&instance->adprecovery));
3406                 return ;
3407         }
3408 
3409         if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
3410                 dev_notice(&instance->pdev->dev, "FW detected to be in fault"
3411                                         "state, restarting it...\n");
3412 
3413                 instance->instancet->disable_intr(instance);
3414                 atomic_set(&instance->fw_outstanding, 0);
3415 
3416                 atomic_set(&instance->fw_reset_no_pci_access, 1);
3417                 instance->instancet->adp_reset(instance, instance->reg_set);
3418                 atomic_set(&instance->fw_reset_no_pci_access, 0);
3419 
3420                 dev_notice(&instance->pdev->dev, "FW restarted successfully,"
3421                                         "initiating next stage...\n");
3422 
3423                 dev_notice(&instance->pdev->dev, "HBA recovery state machine,"
3424                                         "state 2 starting...\n");
3425 
3426                 /* waiting for about 20 second before start the second init */
3427                 for (wait = 0; wait < 30; wait++) {
3428                         msleep(1000);
3429                 }
3430 
3431                 if (megasas_transition_to_ready(instance, 1)) {
3432                         dev_notice(&instance->pdev->dev, "adapter not ready\n");
3433 
3434                         atomic_set(&instance->fw_reset_no_pci_access, 1);
3435                         megaraid_sas_kill_hba(instance);
3436                         return ;
3437                 }
3438 
3439                 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
3440                         (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
3441                         (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
3442                         ) {
3443                         *instance->consumer = *instance->producer;
3444                 } else {
3445                         *instance->consumer = 0;
3446                         *instance->producer = 0;
3447                 }
3448 
3449                 megasas_issue_init_mfi(instance);
3450 
3451                 spin_lock_irqsave(&instance->hba_lock, flags);
3452                 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
3453                 spin_unlock_irqrestore(&instance->hba_lock, flags);
3454                 instance->instancet->enable_intr(instance);
3455 
3456                 megasas_issue_pending_cmds_again(instance);
3457                 instance->issuepend_done = 1;
3458         }
3459 }
3460 
3461 /**
3462  * megasas_deplete_reply_queue -        Processes all completed commands
3463  * @instance:                           Adapter soft state
3464  * @alt_status:                         Alternate status to be returned to
3465  *                                      SCSI mid-layer instead of the status
3466  *                                      returned by the FW
3467  * Note: this must be called with hba lock held
3468  */
3469 static int
3470 megasas_deplete_reply_queue(struct megasas_instance *instance,
3471                                         u8 alt_status)
3472 {
3473         u32 mfiStatus;
3474         u32 fw_state;
3475 
3476         if ((mfiStatus = instance->instancet->check_reset(instance,
3477                                         instance->reg_set)) == 1) {
3478                 return IRQ_HANDLED;
3479         }
3480 
3481         if ((mfiStatus = instance->instancet->clear_intr(
3482                                                 instance->reg_set)
3483                                                 ) == 0) {
3484                 /* Hardware may not set outbound_intr_status in MSI-X mode */
3485                 if (!instance->msix_vectors)
3486                         return IRQ_NONE;
3487         }
3488 
3489         instance->mfiStatus = mfiStatus;
3490 
3491         if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
3492                 fw_state = instance->instancet->read_fw_status_reg(
3493                                 instance->reg_set) & MFI_STATE_MASK;
3494 
3495                 if (fw_state != MFI_STATE_FAULT) {
3496                         dev_notice(&instance->pdev->dev, "fw state:%x\n",
3497                                                 fw_state);
3498                 }
3499 
3500                 if ((fw_state == MFI_STATE_FAULT) &&
3501                                 (instance->disableOnlineCtrlReset == 0)) {
3502                         dev_notice(&instance->pdev->dev, "wait adp restart\n");
3503 
3504                         if ((instance->pdev->device ==
3505                                         PCI_DEVICE_ID_LSI_SAS1064R) ||
3506                                 (instance->pdev->device ==
3507                                         PCI_DEVICE_ID_DELL_PERC5) ||
3508                                 (instance->pdev->device ==
3509                                         PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
3510 
3511                                 *instance->consumer =
3512                                         cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
3513                         }
3514 
3515 
3516                         instance->instancet->disable_intr(instance);
3517                         atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
3518                         instance->issuepend_done = 0;
3519 
3520                         atomic_set(&instance->fw_outstanding, 0);
3521                         megasas_internal_reset_defer_cmds(instance);
3522 
3523                         dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n",
3524                                         fw_state, atomic_read(&instance->adprecovery));
3525 
3526                         schedule_work(&instance->work_init);
3527                         return IRQ_HANDLED;
3528 
3529                 } else {
3530                         dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n",
3531                                 fw_state, instance->disableOnlineCtrlReset);
3532                 }
3533         }
3534 
3535         tasklet_schedule(&instance->isr_tasklet);
3536         return IRQ_HANDLED;
3537 }
3538 /**
3539  * megasas_isr - isr entry point
3540  */
3541 static irqreturn_t megasas_isr(int irq, void *devp)
3542 {
3543         struct megasas_irq_context *irq_context = devp;
3544         struct megasas_instance *instance = irq_context->instance;
3545         unsigned long flags;
3546         irqreturn_t rc;
3547 
3548         if (atomic_read(&instance->fw_reset_no_pci_access))
3549                 return IRQ_HANDLED;
3550 
3551         spin_lock_irqsave(&instance->hba_lock, flags);
3552         rc = megasas_deplete_reply_queue(instance, DID_OK);
3553         spin_unlock_irqrestore(&instance->hba_lock, flags);
3554 
3555         return rc;
3556 }
3557 
3558 /**
3559  * megasas_transition_to_ready -        Move the FW to READY state
3560  * @instance:                           Adapter soft state
3561  *
3562  * During the initialization, FW passes can potentially be in any one of
3563  * several possible states. If the FW in operational, waiting-for-handshake
3564  * states, driver must take steps to bring it to ready state. Otherwise, it
3565  * has to wait for the ready state.
3566  */
3567 int
3568 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
3569 {
3570         int i;
3571         u8 max_wait;
3572         u32 fw_state;
3573         u32 cur_state;
3574         u32 abs_state, curr_abs_state;
3575 
3576         abs_state = instance->instancet->read_fw_status_reg(instance->reg_set);
3577         fw_state = abs_state & MFI_STATE_MASK;
3578 
3579         if (fw_state != MFI_STATE_READY)
3580                 dev_info(&instance->pdev->dev, "Waiting for FW to come to ready"
3581                        " state\n");
3582 
3583         while (fw_state != MFI_STATE_READY) {
3584 
3585                 switch (fw_state) {
3586 
3587                 case MFI_STATE_FAULT:
3588                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW in FAULT state!!\n");
3589                         if (ocr) {
3590                                 max_wait = MEGASAS_RESET_WAIT_TIME;
3591                                 cur_state = MFI_STATE_FAULT;
3592                                 break;
3593                         } else
3594                                 return -ENODEV;
3595 
3596                 case MFI_STATE_WAIT_HANDSHAKE:
3597                         /*
3598                          * Set the CLR bit in inbound doorbell
3599                          */
3600                         if ((instance->pdev->device ==
3601                                 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3602                                 (instance->pdev->device ==
3603                                  PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3604                                 (instance->ctrl_context))
3605                                 writel(
3606                                   MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
3607                                   &instance->reg_set->doorbell);
3608                         else
3609                                 writel(
3610                                     MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
3611                                         &instance->reg_set->inbound_doorbell);
3612 
3613                         max_wait = MEGASAS_RESET_WAIT_TIME;
3614                         cur_state = MFI_STATE_WAIT_HANDSHAKE;
3615                         break;
3616 
3617                 case MFI_STATE_BOOT_MESSAGE_PENDING:
3618                         if ((instance->pdev->device ==
3619                              PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3620                                 (instance->pdev->device ==
3621                                  PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3622                                 (instance->ctrl_context))
3623                                 writel(MFI_INIT_HOTPLUG,
3624                                        &instance->reg_set->doorbell);
3625                         else
3626                                 writel(MFI_INIT_HOTPLUG,
3627                                         &instance->reg_set->inbound_doorbell);
3628 
3629                         max_wait = MEGASAS_RESET_WAIT_TIME;
3630                         cur_state = MFI_STATE_BOOT_MESSAGE_PENDING;
3631                         break;
3632 
3633                 case MFI_STATE_OPERATIONAL:
3634                         /*
3635                          * Bring it to READY state; assuming max wait 10 secs
3636                          */
3637                         instance->instancet->disable_intr(instance);
3638                         if ((instance->pdev->device ==
3639                                 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3640                                 (instance->pdev->device ==
3641                                 PCI_DEVICE_ID_LSI_SAS0071SKINNY)  ||
3642                                 (instance->ctrl_context)) {
3643                                 writel(MFI_RESET_FLAGS,
3644                                         &instance->reg_set->doorbell);
3645 
3646                                 if (instance->ctrl_context) {
3647                                         for (i = 0; i < (10 * 1000); i += 20) {
3648                                                 if (readl(
3649                                                             &instance->
3650                                                             reg_set->
3651                                                             doorbell) & 1)
3652                                                         msleep(20);
3653                                                 else
3654                                                         break;
3655                                         }
3656                                 }
3657                         } else
3658                                 writel(MFI_RESET_FLAGS,
3659                                         &instance->reg_set->inbound_doorbell);
3660 
3661                         max_wait = MEGASAS_RESET_WAIT_TIME;
3662                         cur_state = MFI_STATE_OPERATIONAL;
3663                         break;
3664 
3665                 case MFI_STATE_UNDEFINED:
3666                         /*
3667                          * This state should not last for more than 2 seconds
3668                          */
3669                         max_wait = MEGASAS_RESET_WAIT_TIME;
3670                         cur_state = MFI_STATE_UNDEFINED;
3671                         break;
3672 
3673                 case MFI_STATE_BB_INIT:
3674                         max_wait = MEGASAS_RESET_WAIT_TIME;
3675                         cur_state = MFI_STATE_BB_INIT;
3676                         break;
3677 
3678                 case MFI_STATE_FW_INIT:
3679                         max_wait = MEGASAS_RESET_WAIT_TIME;
3680                         cur_state = MFI_STATE_FW_INIT;
3681                         break;
3682 
3683                 case MFI_STATE_FW_INIT_2:
3684                         max_wait = MEGASAS_RESET_WAIT_TIME;
3685                         cur_state = MFI_STATE_FW_INIT_2;
3686                         break;
3687 
3688                 case MFI_STATE_DEVICE_SCAN:
3689                         max_wait = MEGASAS_RESET_WAIT_TIME;
3690                         cur_state = MFI_STATE_DEVICE_SCAN;
3691                         break;
3692 
3693                 case MFI_STATE_FLUSH_CACHE:
3694                         max_wait = MEGASAS_RESET_WAIT_TIME;
3695                         cur_state = MFI_STATE_FLUSH_CACHE;
3696                         break;
3697 
3698                 default:
3699                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n",
3700                                fw_state);
3701                         return -ENODEV;
3702                 }
3703 
3704                 /*
3705                  * The cur_state should not last for more than max_wait secs
3706                  */
3707                 for (i = 0; i < (max_wait * 1000); i++) {
3708                         curr_abs_state = instance->instancet->
3709                                 read_fw_status_reg(instance->reg_set);
3710 
3711                         if (abs_state == curr_abs_state) {
3712                                 msleep(1);
3713                         } else
3714                                 break;
3715                 }
3716 
3717                 /*
3718                  * Return error if fw_state hasn't changed after max_wait
3719                  */
3720                 if (curr_abs_state == abs_state) {
3721                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed "
3722                                "in %d secs\n", fw_state, max_wait);
3723                         return -ENODEV;
3724                 }
3725 
3726                 abs_state = curr_abs_state;
3727                 fw_state = curr_abs_state & MFI_STATE_MASK;
3728         }
3729         dev_info(&instance->pdev->dev, "FW now in Ready state\n");
3730 
3731         return 0;
3732 }
3733 
3734 /**
3735  * megasas_teardown_frame_pool -        Destroy the cmd frame DMA pool
3736  * @instance:                           Adapter soft state
3737  */
3738 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
3739 {
3740         int i;
3741         u32 max_cmd = instance->max_mfi_cmds;
3742         struct megasas_cmd *cmd;
3743 
3744         if (!instance->frame_dma_pool)
3745                 return;
3746 
3747         /*
3748          * Return all frames to pool
3749          */
3750         for (i = 0; i < max_cmd; i++) {
3751 
3752                 cmd = instance->cmd_list[i];
3753 
3754                 if (cmd->frame)
3755                         pci_pool_free(instance->frame_dma_pool, cmd->frame,
3756                                       cmd->frame_phys_addr);
3757 
3758                 if (cmd->sense)
3759                         pci_pool_free(instance->sense_dma_pool, cmd->sense,
3760                                       cmd->sense_phys_addr);
3761         }
3762 
3763         /*
3764          * Now destroy the pool itself
3765          */
3766         pci_pool_destroy(instance->frame_dma_pool);
3767         pci_pool_destroy(instance->sense_dma_pool);
3768 
3769         instance->frame_dma_pool = NULL;
3770         instance->sense_dma_pool = NULL;
3771 }
3772 
3773 /**
3774  * megasas_create_frame_pool -  Creates DMA pool for cmd frames
3775  * @instance:                   Adapter soft state
3776  *
3777  * Each command packet has an embedded DMA memory buffer that is used for
3778  * filling MFI frame and the SG list that immediately follows the frame. This
3779  * function creates those DMA memory buffers for each command packet by using
3780  * PCI pool facility.
3781  */
3782 static int megasas_create_frame_pool(struct megasas_instance *instance)
3783 {
3784         int i;
3785         u32 max_cmd;
3786         u32 sge_sz;
3787         u32 total_sz;
3788         u32 frame_count;
3789         struct megasas_cmd *cmd;
3790 
3791         max_cmd = instance->max_mfi_cmds;
3792 
3793         /*
3794          * Size of our frame is 64 bytes for MFI frame, followed by max SG
3795          * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer
3796          */
3797         sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
3798             sizeof(struct megasas_sge32);
3799 
3800         if (instance->flag_ieee)
3801                 sge_sz = sizeof(struct megasas_sge_skinny);
3802 
3803         /*
3804          * For MFI controllers.
3805          * max_num_sge = 60
3806          * max_sge_sz  = 16 byte (sizeof megasas_sge_skinny)
3807          * Total 960 byte (15 MFI frame of 64 byte)
3808          *
3809          * Fusion adapter require only 3 extra frame.
3810          * max_num_sge = 16 (defined as MAX_IOCTL_SGE)
3811          * max_sge_sz  = 12 byte (sizeof  megasas_sge64)
3812          * Total 192 byte (3 MFI frame of 64 byte)
3813          */
3814         frame_count = instance->ctrl_context ? (3 + 1) : (15 + 1);
3815         total_sz = MEGAMFI_FRAME_SIZE * frame_count;
3816         /*
3817          * Use DMA pool facility provided by PCI layer
3818          */
3819         instance->frame_dma_pool = pci_pool_create("megasas frame pool",
3820                                         instance->pdev, total_sz, 256, 0);
3821 
3822         if (!instance->frame_dma_pool) {
3823                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n");
3824                 return -ENOMEM;
3825         }
3826 
3827         instance->sense_dma_pool = pci_pool_create("megasas sense pool",
3828                                                    instance->pdev, 128, 4, 0);
3829 
3830         if (!instance->sense_dma_pool) {
3831                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n");
3832 
3833                 pci_pool_destroy(instance->frame_dma_pool);
3834                 instance->frame_dma_pool = NULL;
3835 
3836                 return -ENOMEM;
3837         }
3838 
3839         /*
3840          * Allocate and attach a frame to each of the commands in cmd_list.
3841          * By making cmd->index as the context instead of the &cmd, we can
3842          * always use 32bit context regardless of the architecture
3843          */
3844         for (i = 0; i < max_cmd; i++) {
3845 
3846                 cmd = instance->cmd_list[i];
3847 
3848                 cmd->frame = pci_pool_alloc(instance->frame_dma_pool,
3849                                             GFP_KERNEL, &cmd->frame_phys_addr);
3850 
3851                 cmd->sense = pci_pool_alloc(instance->sense_dma_pool,
3852                                             GFP_KERNEL, &cmd->sense_phys_addr);
3853 
3854                 /*
3855                  * megasas_teardown_frame_pool() takes care of freeing
3856                  * whatever has been allocated
3857                  */
3858                 if (!cmd->frame || !cmd->sense) {
3859                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "pci_pool_alloc failed\n");
3860                         megasas_teardown_frame_pool(instance);
3861                         return -ENOMEM;
3862                 }
3863 
3864                 memset(cmd->frame, 0, total_sz);
3865                 cmd->frame->io.context = cpu_to_le32(cmd->index);
3866                 cmd->frame->io.pad_0 = 0;
3867                 if (!instance->ctrl_context && reset_devices)
3868                         cmd->frame->hdr.cmd = MFI_CMD_INVALID;
3869         }
3870 
3871         return 0;
3872 }
3873 
3874 /**
3875  * megasas_free_cmds -  Free all the cmds in the free cmd pool
3876  * @instance:           Adapter soft state
3877  */
3878 void megasas_free_cmds(struct megasas_instance *instance)
3879 {
3880         int i;
3881 
3882         /* First free the MFI frame pool */
3883         megasas_teardown_frame_pool(instance);
3884 
3885         /* Free all the commands in the cmd_list */
3886         for (i = 0; i < instance->max_mfi_cmds; i++)
3887 
3888                 kfree(instance->cmd_list[i]);
3889 
3890         /* Free the cmd_list buffer itself */
3891         kfree(instance->cmd_list);
3892         instance->cmd_list = NULL;
3893 
3894         INIT_LIST_HEAD(&instance->cmd_pool);
3895 }
3896 
3897 /**
3898  * megasas_alloc_cmds - Allocates the command packets
3899  * @instance:           Adapter soft state
3900  *
3901  * Each command that is issued to the FW, whether IO commands from the OS or
3902  * internal commands like IOCTLs, are wrapped in local data structure called
3903  * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
3904  * the FW.
3905  *
3906  * Each frame has a 32-bit field called context (tag). This context is used
3907  * to get back the megasas_cmd from the frame when a frame gets completed in
3908  * the ISR. Typically the address of the megasas_cmd itself would be used as
3909  * the context. But we wanted to keep the differences between 32 and 64 bit
3910  * systems to the mininum. We always use 32 bit integers for the context. In
3911  * this driver, the 32 bit values are the indices into an array cmd_list.
3912  * This array is used only to look up the megasas_cmd given the context. The
3913  * free commands themselves are maintained in a linked list called cmd_pool.
3914  */
3915 int megasas_alloc_cmds(struct megasas_instance *instance)
3916 {
3917         int i;
3918         int j;
3919         u32 max_cmd;
3920         struct megasas_cmd *cmd;
3921         struct fusion_context *fusion;
3922 
3923         fusion = instance->ctrl_context;
3924         max_cmd = instance->max_mfi_cmds;
3925 
3926         /*
3927          * instance->cmd_list is an array of struct megasas_cmd pointers.
3928          * Allocate the dynamic array first and then allocate individual
3929          * commands.
3930          */
3931         instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
3932 
3933         if (!instance->cmd_list) {
3934                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n");
3935                 return -ENOMEM;
3936         }
3937 
3938         memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
3939 
3940         for (i = 0; i < max_cmd; i++) {
3941                 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
3942                                                 GFP_KERNEL);
3943 
3944                 if (!instance->cmd_list[i]) {
3945 
3946                         for (j = 0; j < i; j++)
3947                                 kfree(instance->cmd_list[j]);
3948 
3949                         kfree(instance->cmd_list);
3950                         instance->cmd_list = NULL;
3951 
3952                         return -ENOMEM;
3953                 }
3954         }
3955 
3956         for (i = 0; i < max_cmd; i++) {
3957                 cmd = instance->cmd_list[i];
3958                 memset(cmd, 0, sizeof(struct megasas_cmd));
3959                 cmd->index = i;
3960                 cmd->scmd = NULL;
3961                 cmd->instance = instance;
3962 
3963                 list_add_tail(&cmd->list, &instance->cmd_pool);
3964         }
3965 
3966         /*
3967          * Create a frame pool and assign one frame to each cmd
3968          */
3969         if (megasas_create_frame_pool(instance)) {
3970                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n");
3971                 megasas_free_cmds(instance);
3972         }
3973 
3974         return 0;
3975 }
3976 
3977 /*
3978  * dcmd_timeout_ocr_possible -  Check if OCR is possible based on Driver/FW state.
3979  * @instance:                           Adapter soft state
3980  *
3981  * Return 0 for only Fusion adapter, if driver load/unload is not in progress
3982  * or FW is not under OCR.
3983  */
3984 inline int
3985 dcmd_timeout_ocr_possible(struct megasas_instance *instance) {
3986 
3987         if (!instance->ctrl_context)
3988                 return KILL_ADAPTER;
3989         else if (instance->unload ||
3990                         test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags))
3991                 return IGNORE_TIMEOUT;
3992         else
3993                 return INITIATE_OCR;
3994 }
3995 
3996 static int
3997 megasas_get_pd_info(struct megasas_instance *instance, u16 device_id)
3998 {
3999         int ret;
4000         struct megasas_cmd *cmd;
4001         struct megasas_dcmd_frame *dcmd;
4002 
4003         cmd = megasas_get_cmd(instance);
4004 
4005         if (!cmd) {
4006                 dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__);
4007                 return -ENOMEM;
4008         }
4009 
4010         dcmd = &cmd->frame->dcmd;
4011 
4012         memset(instance->pd_info, 0, sizeof(*instance->pd_info));
4013         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4014 
4015         dcmd->mbox.s[0] = cpu_to_le16(device_id);
4016         dcmd->cmd = MFI_CMD_DCMD;
4017         dcmd->cmd_status = 0xFF;
4018         dcmd->sge_count = 1;
4019         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4020         dcmd->timeout = 0;
4021         dcmd->pad_0 = 0;
4022         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO));
4023         dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO);
4024         dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->pd_info_h);
4025         dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_PD_INFO));
4026 
4027         if (instance->ctrl_context && !instance->mask_interrupts)
4028                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4029         else
4030                 ret = megasas_issue_polled(instance, cmd);
4031 
4032         switch (ret) {
4033         case DCMD_SUCCESS:
4034                 instance->pd_list[device_id].interface =
4035                                 instance->pd_info->state.ddf.pdType.intf;
4036                 break;
4037 
4038         case DCMD_TIMEOUT:
4039 
4040                 switch (dcmd_timeout_ocr_possible(instance)) {
4041                 case INITIATE_OCR:
4042                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4043                         megasas_reset_fusion(instance->host,
4044                                 MFI_IO_TIMEOUT_OCR);
4045                         break;
4046                 case KILL_ADAPTER:
4047                         megaraid_sas_kill_hba(instance);
4048                         break;
4049                 case IGNORE_TIMEOUT:
4050                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4051                                 __func__, __LINE__);
4052                         break;
4053                 }
4054 
4055                 break;
4056         }
4057 
4058         if (ret != DCMD_TIMEOUT)
4059                 megasas_return_cmd(instance, cmd);
4060 
4061         return ret;
4062 }
4063 /*
4064  * megasas_get_pd_list_info -   Returns FW's pd_list structure
4065  * @instance:                           Adapter soft state
4066  * @pd_list:                            pd_list structure
4067  *
4068  * Issues an internal command (DCMD) to get the FW's controller PD
4069  * list structure.  This information is mainly used to find out SYSTEM
4070  * supported by the FW.
4071  */
4072 static int
4073 megasas_get_pd_list(struct megasas_instance *instance)
4074 {
4075         int ret = 0, pd_index = 0;
4076         struct megasas_cmd *cmd;
4077         struct megasas_dcmd_frame *dcmd;
4078         struct MR_PD_LIST *ci;
4079         struct MR_PD_ADDRESS *pd_addr;
4080         dma_addr_t ci_h = 0;
4081 
4082         cmd = megasas_get_cmd(instance);
4083 
4084         if (!cmd) {
4085                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n");
4086                 return -ENOMEM;
4087         }
4088 
4089         dcmd = &cmd->frame->dcmd;
4090 
4091         ci = pci_alloc_consistent(instance->pdev,
4092                   MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h);
4093 
4094         if (!ci) {
4095                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for pd_list\n");
4096                 megasas_return_cmd(instance, cmd);
4097                 return -ENOMEM;
4098         }
4099 
4100         memset(ci, 0, sizeof(*ci));
4101         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4102 
4103         dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
4104         dcmd->mbox.b[1] = 0;
4105         dcmd->cmd = MFI_CMD_DCMD;
4106         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4107         dcmd->sge_count = 1;
4108         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4109         dcmd->timeout = 0;
4110         dcmd->pad_0 = 0;
4111         dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
4112         dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
4113         dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
4114         dcmd->sgl.sge32[0].length = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
4115 
4116         if (instance->ctrl_context && !instance->mask_interrupts)
4117                 ret = megasas_issue_blocked_cmd(instance, cmd,
4118                         MFI_IO_TIMEOUT_SECS);
4119         else
4120                 ret = megasas_issue_polled(instance, cmd);
4121 
4122         switch (ret) {
4123         case DCMD_FAILED:
4124                 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4125                         "failed/not supported by firmware\n");
4126 
4127                 if (instance->ctrl_context)
4128                         megaraid_sas_kill_hba(instance);
4129                 else
4130                         instance->pd_list_not_supported = 1;
4131                 break;
4132         case DCMD_TIMEOUT:
4133 
4134                 switch (dcmd_timeout_ocr_possible(instance)) {
4135                 case INITIATE_OCR:
4136                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4137                         /*
4138                          * DCMD failed from AEN path.
4139                          * AEN path already hold reset_mutex to avoid PCI access
4140                          * while OCR is in progress.
4141                          */
4142                         mutex_unlock(&instance->reset_mutex);
4143                         megasas_reset_fusion(instance->host,
4144                                                 MFI_IO_TIMEOUT_OCR);
4145                         mutex_lock(&instance->reset_mutex);
4146                         break;
4147                 case KILL_ADAPTER:
4148                         megaraid_sas_kill_hba(instance);
4149                         break;
4150                 case IGNORE_TIMEOUT:
4151                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n",
4152                                 __func__, __LINE__);
4153                         break;
4154                 }
4155 
4156                 break;
4157 
4158         case DCMD_SUCCESS:
4159                 pd_addr = ci->addr;
4160 
4161                 if ((le32_to_cpu(ci->count) >
4162                         (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL)))
4163                         break;
4164 
4165                 memset(instance->local_pd_list, 0,
4166                                 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4167 
4168                 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
4169                         instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid     =
4170                                         le16_to_cpu(pd_addr->deviceId);
4171                         instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType       =
4172                                         pd_addr->scsiDevType;
4173                         instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState      =
4174                                         MR_PD_STATE_SYSTEM;
4175                         pd_addr++;
4176                 }
4177 
4178                 memcpy(instance->pd_list, instance->local_pd_list,
4179                         sizeof(instance->pd_list));
4180                 break;
4181 
4182         }
4183 
4184         pci_free_consistent(instance->pdev,
4185                                 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
4186                                 ci, ci_h);
4187 
4188         if (ret != DCMD_TIMEOUT)
4189                 megasas_return_cmd(instance, cmd);
4190 
4191         return ret;
4192 }
4193 
4194 /*
4195  * megasas_get_ld_list_info -   Returns FW's ld_list structure
4196  * @instance:                           Adapter soft state
4197  * @ld_list:                            ld_list structure
4198  *
4199  * Issues an internal command (DCMD) to get the FW's controller PD
4200  * list structure.  This information is mainly used to find out SYSTEM
4201  * supported by the FW.
4202  */
4203 static int
4204 megasas_get_ld_list(struct megasas_instance *instance)
4205 {
4206         int ret = 0, ld_index = 0, ids = 0;
4207         struct megasas_cmd *cmd;
4208         struct megasas_dcmd_frame *dcmd;
4209         struct MR_LD_LIST *ci;
4210         dma_addr_t ci_h = 0;
4211         u32 ld_count;
4212 
4213         cmd = megasas_get_cmd(instance);
4214 
4215         if (!cmd) {
4216                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n");
4217                 return -ENOMEM;
4218         }
4219 
4220         dcmd = &cmd->frame->dcmd;
4221 
4222         ci = pci_alloc_consistent(instance->pdev,
4223                                 sizeof(struct MR_LD_LIST),
4224                                 &ci_h);
4225 
4226         if (!ci) {
4227                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem in get_ld_list\n");
4228                 megasas_return_cmd(instance, cmd);
4229                 return -ENOMEM;
4230         }
4231 
4232         memset(ci, 0, sizeof(*ci));
4233         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4234 
4235         if (instance->supportmax256vd)
4236                 dcmd->mbox.b[0] = 1;
4237         dcmd->cmd = MFI_CMD_DCMD;
4238         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4239         dcmd->sge_count = 1;
4240         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4241         dcmd->timeout = 0;
4242         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
4243         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
4244         dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
4245         dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_LIST));
4246         dcmd->pad_0  = 0;
4247 
4248         if (instance->ctrl_context && !instance->mask_interrupts)
4249                 ret = megasas_issue_blocked_cmd(instance, cmd,
4250                         MFI_IO_TIMEOUT_SECS);
4251         else
4252                 ret = megasas_issue_polled(instance, cmd);
4253 
4254         ld_count = le32_to_cpu(ci->ldCount);
4255 
4256         switch (ret) {
4257         case DCMD_FAILED:
4258                 megaraid_sas_kill_hba(instance);
4259                 break;
4260         case DCMD_TIMEOUT:
4261 
4262                 switch (dcmd_timeout_ocr_possible(instance)) {
4263                 case INITIATE_OCR:
4264                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4265                         /*
4266                          * DCMD failed from AEN path.
4267                          * AEN path already hold reset_mutex to avoid PCI access
4268                          * while OCR is in progress.
4269                          */
4270                         mutex_unlock(&instance->reset_mutex);
4271                         megasas_reset_fusion(instance->host,
4272                                                 MFI_IO_TIMEOUT_OCR);
4273                         mutex_lock(&instance->reset_mutex);
4274                         break;
4275                 case KILL_ADAPTER:
4276                         megaraid_sas_kill_hba(instance);
4277                         break;
4278                 case IGNORE_TIMEOUT:
4279                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4280                                 __func__, __LINE__);
4281                         break;
4282                 }
4283 
4284                 break;
4285 
4286         case DCMD_SUCCESS:
4287                 if (ld_count > instance->fw_supported_vd_count)
4288                         break;
4289 
4290                 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4291 
4292                 for (ld_index = 0; ld_index < ld_count; ld_index++) {
4293                         if (ci->ldList[ld_index].state != 0) {
4294                                 ids = ci->ldList[ld_index].ref.targetId;
4295                                 instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId;
4296                         }
4297                 }
4298 
4299                 break;
4300         }
4301 
4302         pci_free_consistent(instance->pdev, sizeof(struct MR_LD_LIST), ci, ci_h);
4303 
4304         if (ret != DCMD_TIMEOUT)
4305                 megasas_return_cmd(instance, cmd);
4306 
4307         return ret;
4308 }
4309 
4310 /**
4311  * megasas_ld_list_query -      Returns FW's ld_list structure
4312  * @instance:                           Adapter soft state
4313  * @ld_list:                            ld_list structure
4314  *
4315  * Issues an internal command (DCMD) to get the FW's controller PD
4316  * list structure.  This information is mainly used to find out SYSTEM
4317  * supported by the FW.
4318  */
4319 static int
4320 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
4321 {
4322         int ret = 0, ld_index = 0, ids = 0;
4323         struct megasas_cmd *cmd;
4324         struct megasas_dcmd_frame *dcmd;
4325         struct MR_LD_TARGETID_LIST *ci;
4326         dma_addr_t ci_h = 0;
4327         u32 tgtid_count;
4328 
4329         cmd = megasas_get_cmd(instance);
4330 
4331         if (!cmd) {
4332                 dev_warn(&instance->pdev->dev,
4333                          "megasas_ld_list_query: Failed to get cmd\n");
4334                 return -ENOMEM;
4335         }
4336 
4337         dcmd = &cmd->frame->dcmd;
4338 
4339         ci = pci_alloc_consistent(instance->pdev,
4340                                   sizeof(struct MR_LD_TARGETID_LIST), &ci_h);
4341 
4342         if (!ci) {
4343                 dev_warn(&instance->pdev->dev,
4344                          "Failed to alloc mem for ld_list_query\n");
4345                 megasas_return_cmd(instance, cmd);
4346                 return -ENOMEM;
4347         }
4348 
4349         memset(ci, 0, sizeof(*ci));
4350         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4351 
4352         dcmd->mbox.b[0] = query_type;
4353         if (instance->supportmax256vd)
4354                 dcmd->mbox.b[2] = 1;
4355 
4356         dcmd->cmd = MFI_CMD_DCMD;
4357         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4358         dcmd->sge_count = 1;
4359         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4360         dcmd->timeout = 0;
4361         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4362         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
4363         dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
4364         dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4365         dcmd->pad_0  = 0;
4366 
4367         if (instance->ctrl_context && !instance->mask_interrupts)
4368                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4369         else
4370                 ret = megasas_issue_polled(instance, cmd);
4371 
4372         switch (ret) {
4373         case DCMD_FAILED:
4374                 dev_info(&instance->pdev->dev,
4375                         "DCMD not supported by firmware - %s %d\n",
4376                                 __func__, __LINE__);
4377                 ret = megasas_get_ld_list(instance);
4378                 break;
4379         case DCMD_TIMEOUT:
4380                 switch (dcmd_timeout_ocr_possible(instance)) {
4381                 case INITIATE_OCR:
4382                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4383                         /*
4384                          * DCMD failed from AEN path.
4385                          * AEN path already hold reset_mutex to avoid PCI access
4386                          * while OCR is in progress.
4387                          */
4388                         mutex_unlock(&instance->reset_mutex);
4389                         megasas_reset_fusion(instance->host,
4390                                                 MFI_IO_TIMEOUT_OCR);
4391                         mutex_lock(&instance->reset_mutex);
4392                         break;
4393                 case KILL_ADAPTER:
4394                         megaraid_sas_kill_hba(instance);
4395                         break;
4396                 case IGNORE_TIMEOUT:
4397                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4398                                 __func__, __LINE__);
4399                         break;
4400                 }
4401 
4402                 break;
4403         case DCMD_SUCCESS:
4404                 tgtid_count = le32_to_cpu(ci->count);
4405 
4406                 if ((tgtid_count > (instance->fw_supported_vd_count)))
4407                         break;
4408 
4409                 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4410                 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
4411                         ids = ci->targetId[ld_index];
4412                         instance->ld_ids[ids] = ci->targetId[ld_index];
4413                 }
4414 
4415                 break;
4416         }
4417 
4418         pci_free_consistent(instance->pdev, sizeof(struct MR_LD_TARGETID_LIST),
4419                     ci, ci_h);
4420 
4421         if (ret != DCMD_TIMEOUT)
4422                 megasas_return_cmd(instance, cmd);
4423 
4424         return ret;
4425 }
4426 
4427 /*
4428  * megasas_update_ext_vd_details : Update details w.r.t Extended VD
4429  * instance                      : Controller's instance
4430 */
4431 static void megasas_update_ext_vd_details(struct megasas_instance *instance)
4432 {
4433         struct fusion_context *fusion;
4434         u32 old_map_sz;
4435         u32 new_map_sz;
4436 
4437         fusion = instance->ctrl_context;
4438         /* For MFI based controllers return dummy success */
4439         if (!fusion)
4440                 return;
4441 
4442         instance->supportmax256vd =
4443                 instance->ctrl_info->adapterOperations3.supportMaxExtLDs;
4444         /* Below is additional check to address future FW enhancement */
4445         if (instance->ctrl_info->max_lds > 64)
4446                 instance->supportmax256vd = 1;
4447 
4448         instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
4449                                         * MEGASAS_MAX_DEV_PER_CHANNEL;
4450         instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS
4451                                         * MEGASAS_MAX_DEV_PER_CHANNEL;
4452         if (instance->supportmax256vd) {
4453                 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT;
4454                 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
4455         } else {
4456                 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
4457                 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
4458         }
4459 
4460         dev_info(&instance->pdev->dev,
4461                 "firmware type\t: %s\n",
4462                 instance->supportmax256vd ? "Extended VD(240 VD)firmware" :
4463                 "Legacy(64 VD) firmware");
4464 
4465         old_map_sz = sizeof(struct MR_FW_RAID_MAP) +
4466                                 (sizeof(struct MR_LD_SPAN_MAP) *
4467                                 (instance->fw_supported_vd_count - 1));
4468         new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT);
4469         fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP) +
4470                                 (sizeof(struct MR_LD_SPAN_MAP) *
4471                                 (instance->drv_supported_vd_count - 1));
4472 
4473         fusion->max_map_sz = max(old_map_sz, new_map_sz);
4474 
4475 
4476         if (instance->supportmax256vd)
4477                 fusion->current_map_sz = new_map_sz;
4478         else
4479                 fusion->current_map_sz = old_map_sz;
4480 }
4481 
4482 /**
4483  * megasas_get_controller_info -        Returns FW's controller structure
4484  * @instance:                           Adapter soft state
4485  *
4486  * Issues an internal command (DCMD) to get the FW's controller structure.
4487  * This information is mainly used to find out the maximum IO transfer per
4488  * command supported by the FW.
4489  */
4490 int
4491 megasas_get_ctrl_info(struct megasas_instance *instance)
4492 {
4493         int ret = 0;
4494         struct megasas_cmd *cmd;
4495         struct megasas_dcmd_frame *dcmd;
4496         struct megasas_ctrl_info *ci;
4497         struct megasas_ctrl_info *ctrl_info;
4498         dma_addr_t ci_h = 0;
4499 
4500         ctrl_info = instance->ctrl_info;
4501 
4502         cmd = megasas_get_cmd(instance);
4503 
4504         if (!cmd) {
4505                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n");
4506                 return -ENOMEM;
4507         }
4508 
4509         dcmd = &cmd->frame->dcmd;
4510 
4511         ci = pci_alloc_consistent(instance->pdev,
4512                                   sizeof(struct megasas_ctrl_info), &ci_h);
4513 
4514         if (!ci) {
4515                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for ctrl info\n");
4516                 megasas_return_cmd(instance, cmd);
4517                 return -ENOMEM;
4518         }
4519 
4520         memset(ci, 0, sizeof(*ci));
4521         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4522 
4523         dcmd->cmd = MFI_CMD_DCMD;
4524         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4525         dcmd->sge_count = 1;
4526         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4527         dcmd->timeout = 0;
4528         dcmd->pad_0 = 0;
4529         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
4530         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
4531         dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
4532         dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_ctrl_info));
4533         dcmd->mbox.b[0] = 1;
4534 
4535         if (instance->ctrl_context && !instance->mask_interrupts)
4536                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4537         else
4538                 ret = megasas_issue_polled(instance, cmd);
4539 
4540         switch (ret) {
4541         case DCMD_SUCCESS:
4542                 memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info));
4543                 /* Save required controller information in
4544                  * CPU endianness format.
4545                  */
4546                 le32_to_cpus((u32 *)&ctrl_info->properties.OnOffProperties);
4547                 le32_to_cpus((u32 *)&ctrl_info->adapterOperations2);
4548                 le32_to_cpus((u32 *)&ctrl_info->adapterOperations3);
4549 
4550                 /* Update the latest Ext VD info.
4551                  * From Init path, store current firmware details.
4552                  * From OCR path, detect any firmware properties changes.
4553                  * in case of Firmware upgrade without system reboot.
4554                  */
4555                 megasas_update_ext_vd_details(instance);
4556                 instance->use_seqnum_jbod_fp =
4557                         ctrl_info->adapterOperations3.useSeqNumJbodFP;
4558 
4559                 /*Check whether controller is iMR or MR */
4560                 instance->is_imr = (ctrl_info->memory_size ? 0 : 1);
4561                 dev_info(&instance->pdev->dev,
4562                         "controller type\t: %s(%dMB)\n",
4563                         instance->is_imr ? "iMR" : "MR",
4564                         le16_to_cpu(ctrl_info->memory_size));
4565 
4566                 instance->disableOnlineCtrlReset =
4567                         ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset;
4568                 instance->secure_jbod_support =
4569                         ctrl_info->adapterOperations3.supportSecurityonJBOD;
4570                 dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n",
4571                         instance->disableOnlineCtrlReset ? "Disabled" : "Enabled");
4572                 dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n",
4573                         instance->secure_jbod_support ? "Yes" : "No");
4574                 break;
4575 
4576         case DCMD_TIMEOUT:
4577                 switch (dcmd_timeout_ocr_possible(instance)) {
4578                 case INITIATE_OCR:
4579                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4580                         megasas_reset_fusion(instance->host,
4581                                 MFI_IO_TIMEOUT_OCR);
4582                         break;
4583                 case KILL_ADAPTER:
4584                         megaraid_sas_kill_hba(instance);
4585                         break;
4586                 case IGNORE_TIMEOUT:
4587                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4588                                 __func__, __LINE__);
4589                         break;
4590                 }
4591         case DCMD_FAILED:
4592                 megaraid_sas_kill_hba(instance);
4593                 break;
4594 
4595         }
4596 
4597         pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info),
4598                             ci, ci_h);
4599 
4600         megasas_return_cmd(instance, cmd);
4601 
4602 
4603         return ret;
4604 }
4605 
4606 /*
4607  * megasas_set_crash_dump_params -      Sends address of crash dump DMA buffer
4608  *                                      to firmware
4609  *
4610  * @instance:                           Adapter soft state
4611  * @crash_buf_state             -       tell FW to turn ON/OFF crash dump feature
4612                                         MR_CRASH_BUF_TURN_OFF = 0
4613                                         MR_CRASH_BUF_TURN_ON = 1
4614  * @return 0 on success non-zero on failure.
4615  * Issues an internal command (DCMD) to set parameters for crash dump feature.
4616  * Driver will send address of crash dump DMA buffer and set mbox to tell FW
4617  * that driver supports crash dump feature. This DCMD will be sent only if
4618  * crash dump feature is supported by the FW.
4619  *
4620  */
4621 int megasas_set_crash_dump_params(struct megasas_instance *instance,
4622         u8 crash_buf_state)
4623 {
4624         int ret = 0;
4625         struct megasas_cmd *cmd;
4626         struct megasas_dcmd_frame *dcmd;
4627 
4628         cmd = megasas_get_cmd(instance);
4629 
4630         if (!cmd) {
4631                 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n");
4632                 return -ENOMEM;
4633         }
4634 
4635 
4636         dcmd = &cmd->frame->dcmd;
4637 
4638         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4639         dcmd->mbox.b[0] = crash_buf_state;
4640         dcmd->cmd = MFI_CMD_DCMD;
4641         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4642         dcmd->sge_count = 1;
4643         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
4644         dcmd->timeout = 0;
4645         dcmd->pad_0 = 0;
4646         dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
4647         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
4648         dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->crash_dump_h);
4649         dcmd->sgl.sge32[0].length = cpu_to_le32(CRASH_DMA_BUF_SIZE);
4650 
4651         if (instance->ctrl_context && !instance->mask_interrupts)
4652                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4653         else
4654                 ret = megasas_issue_polled(instance, cmd);
4655 
4656         if (ret == DCMD_TIMEOUT) {
4657                 switch (dcmd_timeout_ocr_possible(instance)) {
4658                 case INITIATE_OCR:
4659                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4660                         megasas_reset_fusion(instance->host,
4661                                         MFI_IO_TIMEOUT_OCR);
4662                         break;
4663                 case KILL_ADAPTER:
4664                         megaraid_sas_kill_hba(instance);
4665                         break;
4666                 case IGNORE_TIMEOUT:
4667                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4668                                 __func__, __LINE__);
4669                         break;
4670                 }
4671         } else
4672                 megasas_return_cmd(instance, cmd);
4673 
4674         return ret;
4675 }
4676 
4677 /**
4678  * megasas_issue_init_mfi -     Initializes the FW
4679  * @instance:           Adapter soft state
4680  *
4681  * Issues the INIT MFI cmd
4682  */
4683 static int
4684 megasas_issue_init_mfi(struct megasas_instance *instance)
4685 {
4686         __le32 context;
4687         struct megasas_cmd *cmd;
4688         struct megasas_init_frame *init_frame;
4689         struct megasas_init_queue_info *initq_info;
4690         dma_addr_t init_frame_h;
4691         dma_addr_t initq_info_h;
4692 
4693         /*
4694          * Prepare a init frame. Note the init frame points to queue info
4695          * structure. Each frame has SGL allocated after first 64 bytes. For
4696          * this frame - since we don't need any SGL - we use SGL's space as
4697          * queue info structure
4698          *
4699          * We will not get a NULL command below. We just created the pool.
4700          */
4701         cmd = megasas_get_cmd(instance);
4702 
4703         init_frame = (struct megasas_init_frame *)cmd->frame;
4704         initq_info = (struct megasas_init_queue_info *)
4705                 ((unsigned long)init_frame + 64);
4706 
4707         init_frame_h = cmd->frame_phys_addr;
4708         initq_info_h = init_frame_h + 64;
4709 
4710         context = init_frame->context;
4711         memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
4712         memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
4713         init_frame->context = context;
4714 
4715         initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
4716         initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
4717 
4718         initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
4719         initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
4720 
4721         init_frame->cmd = MFI_CMD_INIT;
4722         init_frame->cmd_status = MFI_STAT_INVALID_STATUS;
4723         init_frame->queue_info_new_phys_addr_lo =
4724                 cpu_to_le32(lower_32_bits(initq_info_h));
4725         init_frame->queue_info_new_phys_addr_hi =
4726                 cpu_to_le32(upper_32_bits(initq_info_h));
4727 
4728         init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
4729 
4730         /*
4731          * disable the intr before firing the init frame to FW
4732          */
4733         instance->instancet->disable_intr(instance);
4734 
4735         /*
4736          * Issue the init frame in polled mode
4737          */
4738 
4739         if (megasas_issue_polled(instance, cmd)) {
4740                 dev_err(&instance->pdev->dev, "Failed to init firmware\n");
4741                 megasas_return_cmd(instance, cmd);
4742                 goto fail_fw_init;
4743         }
4744 
4745         megasas_return_cmd(instance, cmd);
4746 
4747         return 0;
4748 
4749 fail_fw_init:
4750         return -EINVAL;
4751 }
4752 
4753 static u32
4754 megasas_init_adapter_mfi(struct megasas_instance *instance)
4755 {
4756         struct megasas_register_set __iomem *reg_set;
4757         u32 context_sz;
4758         u32 reply_q_sz;
4759 
4760         reg_set = instance->reg_set;
4761 
4762         /*
4763          * Get various operational parameters from status register
4764          */
4765         instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
4766         /*
4767          * Reduce the max supported cmds by 1. This is to ensure that the
4768          * reply_q_sz (1 more than the max cmd that driver may send)
4769          * does not exceed max cmds that the FW can support
4770          */
4771         instance->max_fw_cmds = instance->max_fw_cmds-1;
4772         instance->max_mfi_cmds = instance->max_fw_cmds;
4773         instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >>
4774                                         0x10;
4775         /*
4776          * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands
4777          * are reserved for IOCTL + driver's internal DCMDs.
4778          */
4779         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4780                 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
4781                 instance->max_scsi_cmds = (instance->max_fw_cmds -
4782                         MEGASAS_SKINNY_INT_CMDS);
4783                 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
4784         } else {
4785                 instance->max_scsi_cmds = (instance->max_fw_cmds -
4786                         MEGASAS_INT_CMDS);
4787                 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS));
4788         }
4789 
4790         instance->cur_can_queue = instance->max_scsi_cmds;
4791         /*
4792          * Create a pool of commands
4793          */
4794         if (megasas_alloc_cmds(instance))
4795                 goto fail_alloc_cmds;
4796 
4797         /*
4798          * Allocate memory for reply queue. Length of reply queue should
4799          * be _one_ more than the maximum commands handled by the firmware.
4800          *
4801          * Note: When FW completes commands, it places corresponding contex
4802          * values in this circular reply queue. This circular queue is a fairly
4803          * typical producer-consumer queue. FW is the producer (of completed
4804          * commands) and the driver is the consumer.
4805          */
4806         context_sz = sizeof(u32);
4807         reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
4808 
4809         instance->reply_queue = pci_alloc_consistent(instance->pdev,
4810                                                      reply_q_sz,
4811                                                      &instance->reply_queue_h);
4812 
4813         if (!instance->reply_queue) {
4814                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n");
4815                 goto fail_reply_queue;
4816         }
4817 
4818         if (megasas_issue_init_mfi(instance))
4819                 goto fail_fw_init;
4820 
4821         if (megasas_get_ctrl_info(instance)) {
4822                 dev_err(&instance->pdev->dev, "(%d): Could get controller info "
4823                         "Fail from %s %d\n", instance->unique_id,
4824                         __func__, __LINE__);
4825                 goto fail_fw_init;
4826         }
4827 
4828         instance->fw_support_ieee = 0;
4829         instance->fw_support_ieee =
4830                 (instance->instancet->read_fw_status_reg(reg_set) &
4831                 0x04000000);
4832 
4833         dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d",
4834                         instance->fw_support_ieee);
4835 
4836         if (instance->fw_support_ieee)
4837                 instance->flag_ieee = 1;
4838 
4839         return 0;
4840 
4841 fail_fw_init:
4842 
4843         pci_free_consistent(instance->pdev, reply_q_sz,
4844                             instance->reply_queue, instance->reply_queue_h);
4845 fail_reply_queue:
4846         megasas_free_cmds(instance);
4847 
4848 fail_alloc_cmds:
4849         return 1;
4850 }
4851 
4852 /*
4853  * megasas_setup_irqs_msix -            register legacy interrupts.
4854  * @instance:                           Adapter soft state
4855  *
4856  * Do not enable interrupt, only setup ISRs.
4857  *
4858  * Return 0 on success.
4859  */
4860 static int
4861 megasas_setup_irqs_ioapic(struct megasas_instance *instance)
4862 {
4863         struct pci_dev *pdev;
4864 
4865         pdev = instance->pdev;
4866         instance->irq_context[0].instance = instance;
4867         instance->irq_context[0].MSIxIndex = 0;
4868         if (request_irq(pdev->irq, instance->instancet->service_isr,
4869                 IRQF_SHARED, "megasas", &instance->irq_context[0])) {
4870                 dev_err(&instance->pdev->dev,
4871                                 "Failed to register IRQ from %s %d\n",
4872                                 __func__, __LINE__);
4873                 return -1;
4874         }
4875         return 0;
4876 }
4877 
4878 /**
4879  * megasas_setup_irqs_msix -            register MSI-x interrupts.
4880  * @instance:                           Adapter soft state
4881  * @is_probe:                           Driver probe check
4882  *
4883  * Do not enable interrupt, only setup ISRs.
4884  *
4885  * Return 0 on success.
4886  */
4887 static int
4888 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe)
4889 {
4890         int i, j, cpu;
4891         struct pci_dev *pdev;
4892 
4893         pdev = instance->pdev;
4894 
4895         /* Try MSI-x */
4896         cpu = cpumask_first(cpu_online_mask);
4897         for (i = 0; i < instance->msix_vectors; i++) {
4898                 instance->irq_context[i].instance = instance;
4899                 instance->irq_context[i].MSIxIndex = i;
4900                 if (request_irq(instance->msixentry[i].vector,
4901                         instance->instancet->service_isr, 0, "megasas",
4902                         &instance->irq_context[i])) {
4903                         dev_err(&instance->pdev->dev,
4904                                 "Failed to register IRQ for vector %d.\n", i);
4905                         for (j = 0; j < i; j++) {
4906                                 if (smp_affinity_enable)
4907                                         irq_set_affinity_hint(
4908                                                 instance->msixentry[j].vector, NULL);
4909                                 free_irq(instance->msixentry[j].vector,
4910                                         &instance->irq_context[j]);
4911                         }
4912                         /* Retry irq register for IO_APIC*/
4913                         instance->msix_vectors = 0;
4914                         if (is_probe)
4915                                 return megasas_setup_irqs_ioapic(instance);
4916                         else
4917                                 return -1;
4918                 }
4919                 if (smp_affinity_enable) {
4920                         if (irq_set_affinity_hint(instance->msixentry[i].vector,
4921                                 get_cpu_mask(cpu)))
4922                                 dev_err(&instance->pdev->dev,
4923                                         "Failed to set affinity hint"
4924                                         " for cpu %d\n", cpu);
4925                         cpu = cpumask_next(cpu, cpu_online_mask);
4926                 }
4927         }
4928         return 0;
4929 }
4930 
4931 /*
4932  * megasas_destroy_irqs-                unregister interrupts.
4933  * @instance:                           Adapter soft state
4934  * return:                              void
4935  */
4936 static void
4937 megasas_destroy_irqs(struct megasas_instance *instance) {
4938 
4939         int i;
4940 
4941         if (instance->msix_vectors)
4942                 for (i = 0; i < instance->msix_vectors; i++) {
4943                         if (smp_affinity_enable)
4944                                 irq_set_affinity_hint(
4945                                         instance->msixentry[i].vector, NULL);
4946                         free_irq(instance->msixentry[i].vector,
4947                                  &instance->irq_context[i]);
4948                 }
4949         else
4950                 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4951 }
4952 
4953 /**
4954  * megasas_setup_jbod_map -     setup jbod map for FP seq_number.
4955  * @instance:                           Adapter soft state
4956  * @is_probe:                           Driver probe check
4957  *
4958  * Return 0 on success.
4959  */
4960 void
4961 megasas_setup_jbod_map(struct megasas_instance *instance)
4962 {
4963         int i;
4964         struct fusion_context *fusion = instance->ctrl_context;
4965         u32 pd_seq_map_sz;
4966 
4967         pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
4968                 (sizeof(struct MR_PD_CFG_SEQ) * (MAX_PHYSICAL_DEVICES - 1));
4969 
4970         if (reset_devices || !fusion ||
4971                 !instance->ctrl_info->adapterOperations3.useSeqNumJbodFP) {
4972                 dev_info(&instance->pdev->dev,
4973                         "Jbod map is not supported %s %d\n",
4974                         __func__, __LINE__);
4975                 instance->use_seqnum_jbod_fp = false;
4976                 return;
4977         }
4978 
4979         if (fusion->pd_seq_sync[0])
4980                 goto skip_alloc;
4981 
4982         for (i = 0; i < JBOD_MAPS_COUNT; i++) {
4983                 fusion->pd_seq_sync[i] = dma_alloc_coherent
4984                         (&instance->pdev->dev, pd_seq_map_sz,
4985                         &fusion->pd_seq_phys[i], GFP_KERNEL);
4986                 if (!fusion->pd_seq_sync[i]) {
4987                         dev_err(&instance->pdev->dev,
4988                                 "Failed to allocate memory from %s %d\n",
4989                                 __func__, __LINE__);
4990                         if (i == 1) {
4991                                 dma_free_coherent(&instance->pdev->dev,
4992                                         pd_seq_map_sz, fusion->pd_seq_sync[0],
4993                                         fusion->pd_seq_phys[0]);
4994                                 fusion->pd_seq_sync[0] = NULL;
4995                         }
4996                         instance->use_seqnum_jbod_fp = false;
4997                         return;
4998                 }
4999         }
5000 
5001 skip_alloc:
5002         if (!megasas_sync_pd_seq_num(instance, false) &&
5003                 !megasas_sync_pd_seq_num(instance, true))
5004                 instance->use_seqnum_jbod_fp = true;
5005         else
5006                 instance->use_seqnum_jbod_fp = false;
5007 }
5008 
5009 /**
5010  * megasas_init_fw -    Initializes the FW
5011  * @instance:           Adapter soft state
5012  *
5013  * This is the main function for initializing firmware
5014  */
5015 
5016 static int megasas_init_fw(struct megasas_instance *instance)
5017 {
5018         u32 max_sectors_1;
5019         u32 max_sectors_2;
5020         u32 tmp_sectors, msix_enable, scratch_pad_2;
5021         resource_size_t base_addr;
5022         struct megasas_register_set __iomem *reg_set;
5023         struct megasas_ctrl_info *ctrl_info = NULL;
5024         unsigned long bar_list;
5025         int i, loop, fw_msix_count = 0;
5026         struct IOV_111 *iovPtr;
5027         struct fusion_context *fusion;
5028 
5029         fusion = instance->ctrl_context;
5030 
5031         /* Find first memory bar */
5032         bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
5033         instance->bar = find_first_bit(&bar_list, sizeof(unsigned long));
5034         if (pci_request_selected_regions(instance->pdev, instance->bar,
5035                                          "megasas: LSI")) {
5036                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n");
5037                 return -EBUSY;
5038         }
5039 
5040         base_addr = pci_resource_start(instance->pdev, instance->bar);
5041         instance->reg_set = ioremap_nocache(base_addr, 8192);
5042 
5043         if (!instance->reg_set) {
5044                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n");
5045                 goto fail_ioremap;
5046         }
5047 
5048         reg_set = instance->reg_set;
5049 
5050         switch (instance->pdev->device) {
5051         case PCI_DEVICE_ID_LSI_FUSION:
5052         case PCI_DEVICE_ID_LSI_PLASMA:
5053         case PCI_DEVICE_ID_LSI_INVADER:
5054         case PCI_DEVICE_ID_LSI_FURY:
5055         case PCI_DEVICE_ID_LSI_INTRUDER:
5056         case PCI_DEVICE_ID_LSI_INTRUDER_24:
5057         case PCI_DEVICE_ID_LSI_CUTLASS_52:
5058         case PCI_DEVICE_ID_LSI_CUTLASS_53:
5059                 instance->instancet = &megasas_instance_template_fusion;
5060                 break;
5061         case PCI_DEVICE_ID_LSI_SAS1078R:
5062         case PCI_DEVICE_ID_LSI_SAS1078DE:
5063                 instance->instancet = &megasas_instance_template_ppc;
5064                 break;
5065         case PCI_DEVICE_ID_LSI_SAS1078GEN2:
5066         case PCI_DEVICE_ID_LSI_SAS0079GEN2:
5067                 instance->instancet = &megasas_instance_template_gen2;
5068                 break;
5069         case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
5070         case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
5071                 instance->instancet = &megasas_instance_template_skinny;
5072                 break;
5073         case PCI_DEVICE_ID_LSI_SAS1064R:
5074         case PCI_DEVICE_ID_DELL_PERC5:
5075         default:
5076                 instance->instancet = &megasas_instance_template_xscale;
5077                 break;
5078         }
5079 
5080         if (megasas_transition_to_ready(instance, 0)) {
5081                 atomic_set(&instance->fw_reset_no_pci_access, 1);
5082                 instance->instancet->adp_reset
5083                         (instance, instance->reg_set);
5084                 atomic_set(&instance->fw_reset_no_pci_access, 0);
5085                 dev_info(&instance->pdev->dev,
5086                         "FW restarted successfully from %s!\n",
5087                         __func__);
5088 
5089                 /*waitting for about 30 second before retry*/
5090                 ssleep(30);
5091 
5092                 if (megasas_transition_to_ready(instance, 0))
5093                         goto fail_ready_state;
5094         }
5095 
5096         /*
5097          * MSI-X host index 0 is common for all adapter.
5098          * It is used for all MPT based Adapters.
5099          */
5100         instance->reply_post_host_index_addr[0] =
5101                 (u32 __iomem *)((u8 __iomem *)instance->reg_set +
5102                 MPI2_REPLY_POST_HOST_INDEX_OFFSET);
5103 
5104         /* Check if MSI-X is supported while in ready state */
5105         msix_enable = (instance->instancet->read_fw_status_reg(reg_set) &
5106                        0x4000000) >> 0x1a;
5107         if (msix_enable && !msix_disable) {
5108                 scratch_pad_2 = readl
5109                         (&instance->reg_set->outbound_scratch_pad_2);
5110                 /* Check max MSI-X vectors */
5111                 if (fusion) {
5112                         if (fusion->adapter_type == THUNDERBOLT_SERIES) { /* Thunderbolt Series*/
5113                                 instance->msix_vectors = (scratch_pad_2
5114                                         & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
5115                                 fw_msix_count = instance->msix_vectors;
5116                         } else { /* Invader series supports more than 8 MSI-x vectors*/
5117                                 instance->msix_vectors = ((scratch_pad_2
5118                                         & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
5119                                         >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
5120                                 if (rdpq_enable)
5121                                         instance->is_rdpq = (scratch_pad_2 & MR_RDPQ_MODE_OFFSET) ?
5122                                                                 1 : 0;
5123                                 fw_msix_count = instance->msix_vectors;
5124                                 /* Save 1-15 reply post index address to local memory
5125                                  * Index 0 is already saved from reg offset
5126                                  * MPI2_REPLY_POST_HOST_INDEX_OFFSET
5127                                  */
5128                                 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
5129                                         instance->reply_post_host_index_addr[loop] =
5130                                                 (u32 __iomem *)
5131                                                 ((u8 __iomem *)instance->reg_set +
5132                                                 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
5133                                                 + (loop * 0x10));
5134                                 }
5135                         }
5136                         if (msix_vectors)
5137                                 instance->msix_vectors = min(msix_vectors,
5138                                         instance->msix_vectors);
5139                 } else /* MFI adapters */
5140                         instance->msix_vectors = 1;
5141                 /* Don't bother allocating more MSI-X vectors than cpus */
5142                 instance->msix_vectors = min(instance->msix_vectors,
5143                                              (unsigned int)num_online_cpus());
5144                 for (i = 0; i < instance->msix_vectors; i++)
5145                         instance->msixentry[i].entry = i;
5146                 i = pci_enable_msix_range(instance->pdev, instance->msixentry,
5147                                           1, instance->msix_vectors);
5148                 if (i > 0)
5149                         instance->msix_vectors = i;
5150                 else
5151                         instance->msix_vectors = 0;
5152         }
5153 
5154         dev_info(&instance->pdev->dev,
5155                 "firmware supports msix\t: (%d)", fw_msix_count);
5156         dev_info(&instance->pdev->dev,
5157                 "current msix/online cpus\t: (%d/%d)\n",
5158                 instance->msix_vectors, (unsigned int)num_online_cpus());
5159         dev_info(&instance->pdev->dev,
5160                 "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled");
5161 
5162         tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
5163                 (unsigned long)instance);
5164 
5165         if (instance->msix_vectors ?
5166                 megasas_setup_irqs_msix(instance, 1) :
5167                 megasas_setup_irqs_ioapic(instance))
5168                 goto fail_setup_irqs;
5169 
5170         instance->ctrl_info = kzalloc(sizeof(struct megasas_ctrl_info),
5171                                 GFP_KERNEL);
5172         if (instance->ctrl_info == NULL)
5173                 goto fail_init_adapter;
5174 
5175         /*
5176          * Below are default value for legacy Firmware.
5177          * non-fusion based controllers
5178          */
5179         instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
5180         instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5181         /* Get operational params, sge flags, send init cmd to controller */
5182         if (instance->instancet->init_adapter(instance))
5183                 goto fail_init_adapter;
5184 
5185 
5186         instance->instancet->enable_intr(instance);
5187 
5188         dev_info(&instance->pdev->dev, "INIT adapter done\n");
5189 
5190         megasas_setup_jbod_map(instance);
5191 
5192         /** for passthrough
5193          * the following function will get the PD LIST.
5194          */
5195         memset(instance->pd_list, 0,
5196                 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
5197         if (megasas_get_pd_list(instance) < 0) {
5198                 dev_err(&instance->pdev->dev, "failed to get PD list\n");
5199                 goto fail_get_pd_list;
5200         }
5201 
5202         memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
5203         if (megasas_ld_list_query(instance,
5204                                   MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
5205                 megasas_get_ld_list(instance);
5206 
5207         /*
5208          * Compute the max allowed sectors per IO: The controller info has two
5209          * limits on max sectors. Driver should use the minimum of these two.
5210          *
5211          * 1 << stripe_sz_ops.min = max sectors per strip
5212          *
5213          * Note that older firmwares ( < FW ver 30) didn't report information
5214          * to calculate max_sectors_1. So the number ended up as zero always.
5215          */
5216         tmp_sectors = 0;
5217         ctrl_info = instance->ctrl_info;
5218 
5219         max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
5220                 le16_to_cpu(ctrl_info->max_strips_per_io);
5221         max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
5222 
5223         tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2);
5224 
5225         instance->peerIsPresent = ctrl_info->cluster.peerIsPresent;
5226         instance->passive = ctrl_info->cluster.passive;
5227         memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId));
5228         instance->UnevenSpanSupport =
5229                 ctrl_info->adapterOperations2.supportUnevenSpans;
5230         if (instance->UnevenSpanSupport) {
5231                 struct fusion_context *fusion = instance->ctrl_context;
5232                 if (MR_ValidateMapInfo(instance))
5233                         fusion->fast_path_io = 1;
5234                 else
5235                         fusion->fast_path_io = 0;
5236 
5237         }
5238         if (ctrl_info->host_interface.SRIOV) {
5239                 instance->requestorId = ctrl_info->iov.requestorId;
5240                 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) {
5241                         if (!ctrl_info->adapterOperations2.activePassive)
5242                             instance->PlasmaFW111 = 1;
5243 
5244                         dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n",
5245                             instance->PlasmaFW111 ? "1.11" : "new");
5246 
5247                         if (instance->PlasmaFW111) {
5248                             iovPtr = (struct IOV_111 *)
5249                                 ((unsigned char *)ctrl_info + IOV_111_OFFSET);
5250                             instance->requestorId = iovPtr->requestorId;
5251                         }
5252                 }
5253                 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n",
5254                         instance->requestorId);
5255         }
5256 
5257         instance->crash_dump_fw_support =
5258                 ctrl_info->adapterOperations3.supportCrashDump;
5259         instance->crash_dump_drv_support =
5260                 (instance->crash_dump_fw_support &&
5261                 instance->crash_dump_buf);
5262         if (instance->crash_dump_drv_support)
5263                 megasas_set_crash_dump_params(instance,
5264                         MR_CRASH_BUF_TURN_OFF);
5265 
5266         else {
5267                 if (instance->crash_dump_buf)
5268                         pci_free_consistent(instance->pdev,
5269                                 CRASH_DMA_BUF_SIZE,
5270                                 instance->crash_dump_buf,
5271                                 instance->crash_dump_h);
5272                 instance->crash_dump_buf = NULL;
5273         }
5274 
5275 
5276         dev_info(&instance->pdev->dev,
5277                 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n",
5278                 le16_to_cpu(ctrl_info->pci.vendor_id),
5279                 le16_to_cpu(ctrl_info->pci.device_id),
5280                 le16_to_cpu(ctrl_info->pci.sub_vendor_id),
5281                 le16_to_cpu(ctrl_info->pci.sub_device_id));
5282         dev_info(&instance->pdev->dev, "unevenspan support      : %s\n",
5283                 instance->UnevenSpanSupport ? "yes" : "no");
5284         dev_info(&instance->pdev->dev, "firmware crash dump     : %s\n",
5285                 instance->crash_dump_drv_support ? "yes" : "no");
5286         dev_info(&instance->pdev->dev, "jbod sync map           : %s\n",
5287                 instance->use_seqnum_jbod_fp ? "yes" : "no");
5288 
5289 
5290         instance->max_sectors_per_req = instance->max_num_sge *
5291                                                 SGE_BUFFER_SIZE / 512;
5292         if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
5293                 instance->max_sectors_per_req = tmp_sectors;
5294 
5295         /* Check for valid throttlequeuedepth module parameter */
5296         if (throttlequeuedepth &&
5297                         throttlequeuedepth <= instance->max_scsi_cmds)
5298                 instance->throttlequeuedepth = throttlequeuedepth;
5299         else
5300                 instance->throttlequeuedepth =
5301                                 MEGASAS_THROTTLE_QUEUE_DEPTH;
5302 
5303         if (resetwaittime > MEGASAS_RESET_WAIT_TIME)
5304                 resetwaittime = MEGASAS_RESET_WAIT_TIME;
5305 
5306         if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT))
5307                 scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
5308 
5309         /* Launch SR-IOV heartbeat timer */
5310         if (instance->requestorId) {
5311                 if (!megasas_sriov_start_heartbeat(instance, 1))
5312                         megasas_start_timer(instance,
5313                                             &instance->sriov_heartbeat_timer,
5314                                             megasas_sriov_heartbeat_handler,
5315                                             MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
5316                 else
5317                         instance->skip_heartbeat_timer_del = 1;
5318         }
5319 
5320         return 0;
5321 
5322 fail_get_pd_list:
5323         instance->instancet->disable_intr(instance);
5324 fail_init_adapter:
5325         megasas_destroy_irqs(instance);
5326 fail_setup_irqs:
5327         if (instance->msix_vectors)
5328                 pci_disable_msix(instance->pdev);
5329         instance->msix_vectors = 0;
5330 fail_ready_state:
5331         kfree(instance->ctrl_info);
5332         instance->ctrl_info = NULL;
5333         iounmap(instance->reg_set);
5334 
5335       fail_ioremap:
5336         pci_release_selected_regions(instance->pdev, instance->bar);
5337 
5338         return -EINVAL;
5339 }
5340 
5341 /**
5342  * megasas_release_mfi -        Reverses the FW initialization
5343  * @instance:                   Adapter soft state
5344  */
5345 static void megasas_release_mfi(struct megasas_instance *instance)
5346 {
5347         u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
5348 
5349         if (instance->reply_queue)
5350                 pci_free_consistent(instance->pdev, reply_q_sz,
5351                             instance->reply_queue, instance->reply_queue_h);
5352 
5353         megasas_free_cmds(instance);
5354 
5355         iounmap(instance->reg_set);
5356 
5357         pci_release_selected_regions(instance->pdev, instance->bar);
5358 }
5359 
5360 /**
5361  * megasas_get_seq_num -        Gets latest event sequence numbers
5362  * @instance:                   Adapter soft state
5363  * @eli:                        FW event log sequence numbers information
5364  *
5365  * FW maintains a log of all events in a non-volatile area. Upper layers would
5366  * usually find out the latest sequence number of the events, the seq number at
5367  * the boot etc. They would "read" all the events below the latest seq number
5368  * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
5369  * number), they would subsribe to AEN (asynchronous event notification) and
5370  * wait for the events to happen.
5371  */
5372 static int
5373 megasas_get_seq_num(struct megasas_instance *instance,
5374                     struct megasas_evt_log_info *eli)
5375 {
5376         struct megasas_cmd *cmd;
5377         struct megasas_dcmd_frame *dcmd;
5378         struct megasas_evt_log_info *el_info;
5379         dma_addr_t el_info_h = 0;
5380 
5381         cmd = megasas_get_cmd(instance);
5382 
5383         if (!cmd) {
5384                 return -ENOMEM;
5385         }
5386 
5387         dcmd = &cmd->frame->dcmd;
5388         el_info = pci_alloc_consistent(instance->pdev,
5389                                        sizeof(struct megasas_evt_log_info),
5390                                        &el_info_h);
5391 
5392         if (!el_info) {
5393                 megasas_return_cmd(instance, cmd);
5394                 return -ENOMEM;
5395         }
5396 
5397         memset(el_info, 0, sizeof(*el_info));
5398         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5399 
5400         dcmd->cmd = MFI_CMD_DCMD;
5401         dcmd->cmd_status = 0x0;
5402         dcmd->sge_count = 1;
5403         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
5404         dcmd->timeout = 0;
5405         dcmd->pad_0 = 0;
5406         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
5407         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
5408         dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(el_info_h);
5409         dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_log_info));
5410 
5411         if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS) ==
5412                 DCMD_SUCCESS) {
5413                 /*
5414                  * Copy the data back into callers buffer
5415                  */
5416                 eli->newest_seq_num = el_info->newest_seq_num;
5417                 eli->oldest_seq_num = el_info->oldest_seq_num;
5418                 eli->clear_seq_num = el_info->clear_seq_num;
5419                 eli->shutdown_seq_num = el_info->shutdown_seq_num;
5420                 eli->boot_seq_num = el_info->boot_seq_num;
5421         } else
5422                 dev_err(&instance->pdev->dev, "DCMD failed "
5423                         "from %s\n", __func__);
5424 
5425         pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info),
5426                             el_info, el_info_h);
5427 
5428         megasas_return_cmd(instance, cmd);
5429 
5430         return 0;
5431 }
5432 
5433 /**
5434  * megasas_register_aen -       Registers for asynchronous event notification
5435  * @instance:                   Adapter soft state
5436  * @seq_num:                    The starting sequence number
5437  * @class_locale:               Class of the event
5438  *
5439  * This function subscribes for AEN for events beyond the @seq_num. It requests
5440  * to be notified if and only if the event is of type @class_locale
5441  */
5442 static int
5443 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
5444                      u32 class_locale_word)
5445 {
5446         int ret_val;
5447         struct megasas_cmd *cmd;
5448         struct megasas_dcmd_frame *dcmd;
5449         union megasas_evt_class_locale curr_aen;
5450         union megasas_evt_class_locale prev_aen;
5451 
5452         /*
5453          * If there an AEN pending already (aen_cmd), check if the
5454          * class_locale of that pending AEN is inclusive of the new
5455          * AEN request we currently have. If it is, then we don't have
5456          * to do anything. In other words, whichever events the current
5457          * AEN request is subscribing to, have already been subscribed
5458          * to.
5459          *
5460          * If the old_cmd is _not_ inclusive, then we have to abort
5461          * that command, form a class_locale that is superset of both
5462          * old and current and re-issue to the FW
5463          */
5464 
5465         curr_aen.word = class_locale_word;
5466 
5467         if (instance->aen_cmd) {
5468 
5469                 prev_aen.word =
5470                         le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]);
5471 
5472                 /*
5473                  * A class whose enum value is smaller is inclusive of all
5474                  * higher values. If a PROGRESS (= -1) was previously
5475                  * registered, then a new registration requests for higher
5476                  * classes need not be sent to FW. They are automatically
5477                  * included.
5478                  *
5479                  * Locale numbers don't have such hierarchy. They are bitmap
5480                  * values
5481                  */
5482                 if ((prev_aen.members.class <= curr_aen.members.class) &&
5483                     !((prev_aen.members.locale & curr_aen.members.locale) ^
5484                       curr_aen.members.locale)) {
5485                         /*
5486                          * Previously issued event registration includes
5487                          * current request. Nothing to do.
5488                          */
5489                         return 0;
5490                 } else {
5491                         curr_aen.members.locale |= prev_aen.members.locale;
5492 
5493                         if (prev_aen.members.class < curr_aen.members.class)
5494                                 curr_aen.members.class = prev_aen.members.class;
5495 
5496                         instance->aen_cmd->abort_aen = 1;
5497                         ret_val = megasas_issue_blocked_abort_cmd(instance,
5498                                                                   instance->
5499                                                                   aen_cmd, 30);
5500 
5501                         if (ret_val) {
5502                                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort "
5503                                        "previous AEN command\n");
5504                                 return ret_val;
5505                         }
5506                 }
5507         }
5508 
5509         cmd = megasas_get_cmd(instance);
5510 
5511         if (!cmd)
5512                 return -ENOMEM;
5513 
5514         dcmd = &cmd->frame->dcmd;
5515 
5516         memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
5517 
5518         /*
5519          * Prepare DCMD for aen registration
5520          */
5521         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5522 
5523         dcmd->cmd = MFI_CMD_DCMD;
5524         dcmd->cmd_status = 0x0;
5525         dcmd->sge_count = 1;
5526         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
5527         dcmd->timeout = 0;
5528         dcmd->pad_0 = 0;
5529         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
5530         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
5531         dcmd->mbox.w[0] = cpu_to_le32(seq_num);
5532         instance->last_seq_num = seq_num;
5533         dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
5534         dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->evt_detail_h);
5535         dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_detail));
5536 
5537         if (instance->aen_cmd != NULL) {
5538                 megasas_return_cmd(instance, cmd);
5539                 return 0;
5540         }
5541 
5542         /*
5543          * Store reference to the cmd used to register for AEN. When an
5544          * application wants us to register for AEN, we have to abort this
5545          * cmd and re-register with a new EVENT LOCALE supplied by that app
5546          */
5547         instance->aen_cmd = cmd;
5548 
5549         /*
5550          * Issue the aen registration frame
5551          */
5552         instance->instancet->issue_dcmd(instance, cmd);
5553 
5554         return 0;
5555 }
5556 
5557 /**
5558  * megasas_start_aen -  Subscribes to AEN during driver load time
5559  * @instance:           Adapter soft state
5560  */
5561 static int megasas_start_aen(struct megasas_instance *instance)
5562 {
5563         struct megasas_evt_log_info eli;
5564         union megasas_evt_class_locale class_locale;
5565 
5566         /*
5567          * Get the latest sequence number from FW
5568          */
5569         memset(&eli, 0, sizeof(eli));
5570 
5571         if (megasas_get_seq_num(instance, &eli))
5572                 return -1;
5573 
5574         /*
5575          * Register AEN with FW for latest sequence number plus 1
5576          */
5577         class_locale.members.reserved = 0;
5578         class_locale.members.locale = MR_EVT_LOCALE_ALL;
5579         class_locale.members.class = MR_EVT_CLASS_DEBUG;
5580 
5581         return megasas_register_aen(instance,
5582                         le32_to_cpu(eli.newest_seq_num) + 1,
5583                         class_locale.word);
5584 }
5585 
5586 /**
5587  * megasas_io_attach -  Attaches this driver to SCSI mid-layer
5588  * @instance:           Adapter soft state
5589  */
5590 static int megasas_io_attach(struct megasas_instance *instance)
5591 {
5592         struct Scsi_Host *host = instance->host;
5593 
5594         /*
5595          * Export parameters required by SCSI mid-layer
5596          */
5597         host->irq = instance->pdev->irq;
5598         host->unique_id = instance->unique_id;
5599         host->can_queue = instance->max_scsi_cmds;
5600         host->this_id = instance->init_id;
5601         host->sg_tablesize = instance->max_num_sge;
5602 
5603         if (instance->fw_support_ieee)
5604                 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
5605 
5606         /*
5607          * Check if the module parameter value for max_sectors can be used
5608          */
5609         if (max_sectors && max_sectors < instance->max_sectors_per_req)
5610                 instance->max_sectors_per_req = max_sectors;
5611         else {
5612                 if (max_sectors) {
5613                         if (((instance->pdev->device ==
5614                                 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
5615                                 (instance->pdev->device ==
5616                                 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
5617                                 (max_sectors <= MEGASAS_MAX_SECTORS)) {
5618                                 instance->max_sectors_per_req = max_sectors;
5619                         } else {
5620                         dev_info(&instance->pdev->dev, "max_sectors should be > 0"
5621                                 "and <= %d (or < 1MB for GEN2 controller)\n",
5622                                 instance->max_sectors_per_req);
5623                         }
5624                 }
5625         }
5626 
5627         host->max_sectors = instance->max_sectors_per_req;
5628         host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
5629         host->max_channel = MEGASAS_MAX_CHANNELS - 1;
5630         host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
5631         host->max_lun = MEGASAS_MAX_LUN;
5632         host->max_cmd_len = 16;
5633 
5634         /*
5635          * Notify the mid-layer about the new controller
5636          */
5637         if (scsi_add_host(host, &instance->pdev->dev)) {
5638                 dev_err(&instance->pdev->dev,
5639                         "Failed to add host from %s %d\n",
5640                         __func__, __LINE__);
5641                 return -ENODEV;
5642         }
5643 
5644         return 0;
5645 }
5646 
5647 static int
5648 megasas_set_dma_mask(struct pci_dev *pdev)
5649 {
5650         /*
5651          * All our controllers are capable of performing 64-bit DMA
5652          */
5653         if (IS_DMA64) {
5654                 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) {
5655 
5656                         if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
5657                                 goto fail_set_dma_mask;
5658                 }
5659         } else {
5660                 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
5661                         goto fail_set_dma_mask;
5662         }
5663         /*
5664          * Ensure that all data structures are allocated in 32-bit
5665          * memory.
5666          */
5667         if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) {
5668                 /* Try 32bit DMA mask and 32 bit Consistent dma mask */
5669                 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))
5670                         && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
5671                         dev_info(&pdev->dev, "set 32bit DMA mask"
5672                                 "and 32 bit consistent mask\n");
5673                 else
5674                         goto fail_set_dma_mask;
5675         }
5676 
5677         return 0;
5678 
5679 fail_set_dma_mask:
5680         return 1;
5681 }
5682 
5683 /**
5684  * megasas_probe_one -  PCI hotplug entry point
5685  * @pdev:               PCI device structure
5686  * @id:                 PCI ids of supported hotplugged adapter
5687  */
5688 static int megasas_probe_one(struct pci_dev *pdev,
5689                              const struct pci_device_id *id)
5690 {
5691         int rval, pos;
5692         struct Scsi_Host *host;
5693         struct megasas_instance *instance;
5694         u16 control = 0;
5695         struct fusion_context *fusion = NULL;
5696 
5697         /* Reset MSI-X in the kdump kernel */
5698         if (reset_devices) {
5699                 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
5700                 if (pos) {
5701                         pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
5702                                              &control);
5703                         if (control & PCI_MSIX_FLAGS_ENABLE) {
5704                                 dev_info(&pdev->dev, "resetting MSI-X\n");
5705                                 pci_write_config_word(pdev,
5706                                                       pos + PCI_MSIX_FLAGS,
5707                                                       control &
5708                                                       ~PCI_MSIX_FLAGS_ENABLE);
5709                         }
5710                 }
5711         }
5712 
5713         /*
5714          * PCI prepping: enable device set bus mastering and dma mask
5715          */
5716         rval = pci_enable_device_mem(pdev);
5717 
5718         if (rval) {
5719                 return rval;
5720         }
5721 
5722         pci_set_master(pdev);
5723 
5724         if (megasas_set_dma_mask(pdev))
5725                 goto fail_set_dma_mask;
5726 
5727         host = scsi_host_alloc(&megasas_template,
5728                                sizeof(struct megasas_instance));
5729 
5730         if (!host) {
5731                 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n");
5732                 goto fail_alloc_instance;
5733         }
5734 
5735         instance = (struct megasas_instance *)host->hostdata;
5736         memset(instance, 0, sizeof(*instance));
5737         atomic_set(&instance->fw_reset_no_pci_access, 0);
5738         instance->pdev = pdev;
5739 
5740         switch (instance->pdev->device) {
5741         case PCI_DEVICE_ID_LSI_FUSION:
5742         case PCI_DEVICE_ID_LSI_PLASMA:
5743         case PCI_DEVICE_ID_LSI_INVADER:
5744         case PCI_DEVICE_ID_LSI_FURY:
5745         case PCI_DEVICE_ID_LSI_INTRUDER:
5746         case PCI_DEVICE_ID_LSI_INTRUDER_24:
5747         case PCI_DEVICE_ID_LSI_CUTLASS_52:
5748         case PCI_DEVICE_ID_LSI_CUTLASS_53:
5749         {
5750                 instance->ctrl_context_pages =
5751                         get_order(sizeof(struct fusion_context));
5752                 instance->ctrl_context = (void *)__get_free_pages(GFP_KERNEL,
5753                                 instance->ctrl_context_pages);
5754                 if (!instance->ctrl_context) {
5755                         dev_printk(KERN_DEBUG, &pdev->dev, "Failed to allocate "
5756                                "memory for Fusion context info\n");
5757                         goto fail_alloc_dma_buf;
5758                 }
5759                 fusion = instance->ctrl_context;
5760                 memset(fusion, 0,
5761                         ((1 << PAGE_SHIFT) << instance->ctrl_context_pages));
5762                 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
5763                         (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA))
5764                         fusion->adapter_type = THUNDERBOLT_SERIES;
5765                 else
5766                         fusion->adapter_type = INVADER_SERIES;
5767         }
5768         break;
5769         default: /* For all other supported controllers */
5770 
5771                 instance->producer =
5772                         pci_alloc_consistent(pdev, sizeof(u32),
5773                                              &instance->producer_h);
5774                 instance->consumer =
5775                         pci_alloc_consistent(pdev, sizeof(u32),
5776                                              &instance->consumer_h);
5777 
5778                 if (!instance->producer || !instance->consumer) {
5779                         dev_printk(KERN_DEBUG, &pdev->dev, "Failed to allocate"
5780                                "memory for producer, consumer\n");
5781                         goto fail_alloc_dma_buf;
5782                 }
5783 
5784                 *instance->producer = 0;
5785                 *instance->consumer = 0;
5786                 break;
5787         }
5788 
5789         /* Crash dump feature related initialisation*/
5790         instance->drv_buf_index = 0;
5791         instance->drv_buf_alloc = 0;
5792         instance->crash_dump_fw_support = 0;
5793         instance->crash_dump_app_support = 0;
5794         instance->fw_crash_state = UNAVAILABLE;
5795         spin_lock_init(&instance->crashdump_lock);
5796         instance->crash_dump_buf = NULL;
5797 
5798         megasas_poll_wait_aen = 0;
5799         instance->flag_ieee = 0;
5800         instance->ev = NULL;
5801         instance->issuepend_done = 1;
5802         atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
5803         instance->is_imr = 0;
5804 
5805         instance->evt_detail = pci_alloc_consistent(pdev,
5806                                                     sizeof(struct
5807                                                            megasas_evt_detail),
5808                                                     &instance->evt_detail_h);
5809 
5810         if (!instance->evt_detail) {
5811                 dev_printk(KERN_DEBUG, &pdev->dev, "Failed to allocate memory for "
5812                        "event detail structure\n");
5813                 goto fail_alloc_dma_buf;
5814         }
5815 
5816         if (!reset_devices) {
5817                 instance->system_info_buf = pci_zalloc_consistent(pdev,
5818                                         sizeof(struct MR_DRV_SYSTEM_INFO),
5819                                         &instance->system_info_h);
5820                 if (!instance->system_info_buf)
5821                         dev_info(&instance->pdev->dev, "Can't allocate system info buffer\n");
5822 
5823                 instance->pd_info = pci_alloc_consistent(pdev,
5824                         sizeof(struct MR_PD_INFO), &instance->pd_info_h);
5825 
5826                 if (!instance->pd_info)
5827                         dev_err(&instance->pdev->dev, "Failed to alloc mem for pd_info\n");
5828 
5829                 instance->crash_dump_buf = pci_alloc_consistent(pdev,
5830                                                 CRASH_DMA_BUF_SIZE,
5831                                                 &instance->crash_dump_h);
5832                 if (!instance->crash_dump_buf)
5833                         dev_err(&pdev->dev, "Can't allocate Firmware "
5834                                 "crash dump DMA buffer\n");
5835         }
5836 
5837         /*
5838          * Initialize locks and queues
5839          */
5840         INIT_LIST_HEAD(&instance->cmd_pool);
5841         INIT_LIST_HEAD(&instance->internal_reset_pending_q);
5842 
5843         atomic_set(&instance->fw_outstanding,0);
5844 
5845         init_waitqueue_head(&instance->int_cmd_wait_q);
5846         init_waitqueue_head(&instance->abort_cmd_wait_q);
5847 
5848         spin_lock_init(&instance->mfi_pool_lock);
5849         spin_lock_init(&instance->hba_lock);
5850         spin_lock_init(&instance->completion_lock);
5851 
5852         mutex_init(&instance->reset_mutex);
5853         mutex_init(&instance->hba_mutex);
5854 
5855         /*
5856          * Initialize PCI related and misc parameters
5857          */
5858         instance->host = host;
5859         instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
5860         instance->init_id = MEGASAS_DEFAULT_INIT_ID;
5861         instance->ctrl_info = NULL;
5862 
5863 
5864         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
5865                 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
5866                 instance->flag_ieee = 1;
5867 
5868         megasas_dbg_lvl = 0;
5869         instance->flag = 0;
5870         instance->unload = 1;
5871         instance->last_time = 0;
5872         instance->disableOnlineCtrlReset = 1;
5873         instance->UnevenSpanSupport = 0;
5874 
5875         if (instance->ctrl_context) {
5876                 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
5877                 INIT_WORK(&instance->crash_init, megasas_fusion_crash_dump_wq);
5878         } else
5879                 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
5880 
5881         /*
5882          * Initialize MFI Firmware
5883          */
5884         if (megasas_init_fw(instance))
5885                 goto fail_init_mfi;
5886 
5887         if (instance->requestorId) {
5888                 if (instance->PlasmaFW111) {
5889                         instance->vf_affiliation_111 =
5890                                 pci_alloc_consistent(pdev, sizeof(struct MR_LD_VF_AFFILIATION_111),
5891                                                      &instance->vf_affiliation_111_h);
5892                         if (!instance->vf_affiliation_111)
5893                                 dev_warn(&pdev->dev, "Can't allocate "
5894                                        "memory for VF affiliation buffer\n");
5895                 } else {
5896                         instance->vf_affiliation =
5897                                 pci_alloc_consistent(pdev,
5898                                                      (MAX_LOGICAL_DRIVES + 1) *
5899                                                      sizeof(struct MR_LD_VF_AFFILIATION),
5900                                                      &instance->vf_affiliation_h);
5901                         if (!instance->vf_affiliation)
5902                                 dev_warn(&pdev->dev, "Can't allocate "
5903                                        "memory for VF affiliation buffer\n");
5904                 }
5905         }
5906 
5907         /*
5908          * Store instance in PCI softstate
5909          */
5910         pci_set_drvdata(pdev, instance);
5911 
5912         /*
5913          * Add this controller to megasas_mgmt_info structure so that it
5914          * can be exported to management applications
5915          */
5916         megasas_mgmt_info.count++;
5917         megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
5918         megasas_mgmt_info.max_index++;
5919 
5920         /*
5921          * Register with SCSI mid-layer
5922          */
5923         if (megasas_io_attach(instance))
5924                 goto fail_io_attach;
5925 
5926         instance->unload = 0;
5927         /*
5928          * Trigger SCSI to scan our drives
5929          */
5930         scsi_scan_host(host);
5931 
5932         /*
5933          * Initiate AEN (Asynchronous Event Notification)
5934          */
5935         if (megasas_start_aen(instance)) {
5936                 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n");
5937                 goto fail_start_aen;
5938         }
5939 
5940         /* Get current SR-IOV LD/VF affiliation */
5941         if (instance->requestorId)
5942                 megasas_get_ld_vf_affiliation(instance, 1);
5943 
5944         return 0;
5945 
5946 fail_start_aen:
5947 fail_io_attach:
5948         megasas_mgmt_info.count--;
5949         megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
5950         megasas_mgmt_info.max_index--;
5951 
5952         instance->instancet->disable_intr(instance);
5953         megasas_destroy_irqs(instance);
5954 
5955         if (instance->ctrl_context)
5956                 megasas_release_fusion(instance);
5957         else
5958                 megasas_release_mfi(instance);
5959         if (instance->msix_vectors)
5960                 pci_disable_msix(instance->pdev);
5961 fail_init_mfi:
5962 fail_alloc_dma_buf:
5963         if (instance->evt_detail)
5964                 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
5965                                     instance->evt_detail,
5966                                     instance->evt_detail_h);
5967 
5968         if (instance->pd_info)
5969                 pci_free_consistent(pdev, sizeof(struct MR_PD_INFO),
5970                                         instance->pd_info,
5971                                         instance->pd_info_h);
5972         if (instance->producer)
5973                 pci_free_consistent(pdev, sizeof(u32), instance->producer,
5974                                     instance->producer_h);
5975         if (instance->consumer)
5976                 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
5977                                     instance->consumer_h);
5978         scsi_host_put(host);
5979 
5980 fail_alloc_instance:
5981 fail_set_dma_mask:
5982         pci_disable_device(pdev);
5983 
5984         return -ENODEV;
5985 }
5986 
5987 /**
5988  * megasas_flush_cache -        Requests FW to flush all its caches
5989  * @instance:                   Adapter soft state
5990  */
5991 static void megasas_flush_cache(struct megasas_instance *instance)
5992 {
5993         struct megasas_cmd *cmd;
5994         struct megasas_dcmd_frame *dcmd;
5995 
5996         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
5997                 return;
5998 
5999         cmd = megasas_get_cmd(instance);
6000 
6001         if (!cmd)
6002                 return;
6003 
6004         dcmd = &cmd->frame->dcmd;
6005 
6006         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6007 
6008         dcmd->cmd = MFI_CMD_DCMD;
6009         dcmd->cmd_status = 0x0;
6010         dcmd->sge_count = 0;
6011         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
6012         dcmd->timeout = 0;
6013         dcmd->pad_0 = 0;
6014         dcmd->data_xfer_len = 0;
6015         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
6016         dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
6017 
6018         if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
6019                         != DCMD_SUCCESS) {
6020                 dev_err(&instance->pdev->dev,
6021                         "return from %s %d\n", __func__, __LINE__);
6022                 return;
6023         }
6024 
6025         megasas_return_cmd(instance, cmd);
6026 }
6027 
6028 /**
6029  * megasas_shutdown_controller -        Instructs FW to shutdown the controller
6030  * @instance:                           Adapter soft state
6031  * @opcode:                             Shutdown/Hibernate
6032  */
6033 static void megasas_shutdown_controller(struct megasas_instance *instance,
6034                                         u32 opcode)
6035 {
6036         struct megasas_cmd *cmd;
6037         struct megasas_dcmd_frame *dcmd;
6038 
6039         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
6040                 return;
6041 
6042         cmd = megasas_get_cmd(instance);
6043 
6044         if (!cmd)
6045                 return;
6046 
6047         if (instance->aen_cmd)
6048                 megasas_issue_blocked_abort_cmd(instance,
6049                         instance->aen_cmd, MFI_IO_TIMEOUT_SECS);
6050         if (instance->map_update_cmd)
6051                 megasas_issue_blocked_abort_cmd(instance,
6052                         instance->map_update_cmd, MFI_IO_TIMEOUT_SECS);
6053         if (instance->jbod_seq_cmd)
6054                 megasas_issue_blocked_abort_cmd(instance,
6055                         instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS);
6056 
6057         dcmd = &cmd->frame->dcmd;
6058 
6059         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6060 
6061         dcmd->cmd = MFI_CMD_DCMD;
6062         dcmd->cmd_status = 0x0;
6063         dcmd->sge_count = 0;
6064         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
6065         dcmd->timeout = 0;
6066         dcmd->pad_0 = 0;
6067         dcmd->data_xfer_len = 0;
6068         dcmd->opcode = cpu_to_le32(opcode);
6069 
6070         if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
6071                         != DCMD_SUCCESS) {
6072                 dev_err(&instance->pdev->dev,
6073                         "return from %s %d\n", __func__, __LINE__);
6074                 return;
6075         }
6076 
6077         megasas_return_cmd(instance, cmd);
6078 }
6079 
6080 #ifdef CONFIG_PM
6081 /**
6082  * megasas_suspend -    driver suspend entry point
6083  * @pdev:               PCI device structure
6084  * @state:              PCI power state to suspend routine
6085  */
6086 static int
6087 megasas_suspend(struct pci_dev *pdev, pm_message_t state)
6088 {
6089         struct Scsi_Host *host;
6090         struct megasas_instance *instance;
6091 
6092         instance = pci_get_drvdata(pdev);
6093         host = instance->host;
6094         instance->unload = 1;
6095 
6096         /* Shutdown SR-IOV heartbeat timer */
6097         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
6098                 del_timer_sync(&instance->sriov_heartbeat_timer);
6099 
6100         megasas_flush_cache(instance);
6101         megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
6102 
6103         /* cancel the delayed work if this work still in queue */
6104         if (instance->ev != NULL) {
6105                 struct megasas_aen_event *ev = instance->ev;
6106                 cancel_delayed_work_sync(&ev->hotplug_work);
6107                 instance->ev = NULL;
6108         }
6109 
6110         tasklet_kill(&instance->isr_tasklet);
6111 
6112         pci_set_drvdata(instance->pdev, instance);
6113         instance->instancet->disable_intr(instance);
6114 
6115         megasas_destroy_irqs(instance);
6116 
6117         if (instance->msix_vectors)
6118                 pci_disable_msix(instance->pdev);
6119 
6120         pci_save_state(pdev);
6121         pci_disable_device(pdev);
6122 
6123         pci_set_power_state(pdev, pci_choose_state(pdev, state));
6124 
6125         return 0;
6126 }
6127 
6128 /**
6129  * megasas_resume-      driver resume entry point
6130  * @pdev:               PCI device structure
6131  */
6132 static int
6133 megasas_resume(struct pci_dev *pdev)
6134 {
6135         int rval;
6136         struct Scsi_Host *host;
6137         struct megasas_instance *instance;
6138 
6139         instance = pci_get_drvdata(pdev);
6140         host = instance->host;
6141         pci_set_power_state(pdev, PCI_D0);
6142         pci_enable_wake(pdev, PCI_D0, 0);
6143         pci_restore_state(pdev);
6144 
6145         /*
6146          * PCI prepping: enable device set bus mastering and dma mask
6147          */
6148         rval = pci_enable_device_mem(pdev);
6149 
6150         if (rval) {
6151                 dev_err(&pdev->dev, "Enable device failed\n");
6152                 return rval;
6153         }
6154 
6155         pci_set_master(pdev);
6156 
6157         if (megasas_set_dma_mask(pdev))
6158                 goto fail_set_dma_mask;
6159 
6160         /*
6161          * Initialize MFI Firmware
6162          */
6163 
6164         atomic_set(&instance->fw_outstanding, 0);
6165 
6166         /*
6167          * We expect the FW state to be READY
6168          */
6169         if (megasas_transition_to_ready(instance, 0))
6170                 goto fail_ready_state;
6171 
6172         /* Now re-enable MSI-X */
6173         if (instance->msix_vectors &&
6174             pci_enable_msix_exact(instance->pdev, instance->msixentry,
6175                                   instance->msix_vectors))
6176                 goto fail_reenable_msix;
6177 
6178         if (instance->ctrl_context) {
6179                 megasas_reset_reply_desc(instance);
6180                 if (megasas_ioc_init_fusion(instance)) {
6181                         megasas_free_cmds(instance);
6182                         megasas_free_cmds_fusion(instance);
6183                         goto fail_init_mfi;
6184                 }
6185                 if (!megasas_get_map_info(instance))
6186                         megasas_sync_map_info(instance);
6187         } else {
6188                 *instance->producer = 0;
6189                 *instance->consumer = 0;
6190                 if (megasas_issue_init_mfi(instance))
6191                         goto fail_init_mfi;
6192         }
6193 
6194         tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
6195                      (unsigned long)instance);
6196 
6197         if (instance->msix_vectors ?
6198                         megasas_setup_irqs_msix(instance, 0) :
6199                         megasas_setup_irqs_ioapic(instance))
6200                 goto fail_init_mfi;
6201 
6202         /* Re-launch SR-IOV heartbeat timer */
6203         if (instance->requestorId) {
6204                 if (!megasas_sriov_start_heartbeat(instance, 0))
6205                         megasas_start_timer(instance,
6206                                             &instance->sriov_heartbeat_timer,
6207                                             megasas_sriov_heartbeat_handler,
6208                                             MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
6209                 else {
6210                         instance->skip_heartbeat_timer_del = 1;
6211                         goto fail_init_mfi;
6212                 }
6213         }
6214 
6215         instance->instancet->enable_intr(instance);
6216         megasas_setup_jbod_map(instance);
6217         instance->unload = 0;
6218 
6219         /*
6220          * Initiate AEN (Asynchronous Event Notification)
6221          */
6222         if (megasas_start_aen(instance))
6223                 dev_err(&instance->pdev->dev, "Start AEN failed\n");
6224 
6225         return 0;
6226 
6227 fail_init_mfi:
6228         if (instance->evt_detail)
6229                 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
6230                                 instance->evt_detail,
6231                                 instance->evt_detail_h);
6232 
6233         if (instance->pd_info)
6234                 pci_free_consistent(pdev, sizeof(struct MR_PD_INFO),
6235                                         instance->pd_info,
6236                                         instance->pd_info_h);
6237         if (instance->producer)
6238                 pci_free_consistent(pdev, sizeof(u32), instance->producer,
6239                                 instance->producer_h);
6240         if (instance->consumer)
6241                 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
6242                                 instance->consumer_h);
6243         scsi_host_put(host);
6244 
6245 fail_set_dma_mask:
6246 fail_ready_state:
6247 fail_reenable_msix:
6248 
6249         pci_disable_device(pdev);
6250 
6251         return -ENODEV;
6252 }
6253 #else
6254 #define megasas_suspend NULL
6255 #define megasas_resume  NULL
6256 #endif
6257 
6258 /**
6259  * megasas_detach_one - PCI hot"un"plug entry point
6260  * @pdev:               PCI device structure
6261  */
6262 static void megasas_detach_one(struct pci_dev *pdev)
6263 {
6264         int i;
6265         struct Scsi_Host *host;
6266         struct megasas_instance *instance;
6267         struct fusion_context *fusion;
6268         u32 pd_seq_map_sz;
6269 
6270         instance = pci_get_drvdata(pdev);
6271         instance->unload = 1;
6272         host = instance->host;
6273         fusion = instance->ctrl_context;
6274 
6275         /* Shutdown SR-IOV heartbeat timer */
6276         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
6277                 del_timer_sync(&instance->sriov_heartbeat_timer);
6278 
6279         if (instance->fw_crash_state != UNAVAILABLE)
6280                 megasas_free_host_crash_buffer(instance);
6281         scsi_remove_host(instance->host);
6282         megasas_flush_cache(instance);
6283         megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
6284 
6285         /* cancel the delayed work if this work still in queue*/
6286         if (instance->ev != NULL) {
6287                 struct megasas_aen_event *ev = instance->ev;
6288                 cancel_delayed_work_sync(&ev->hotplug_work);
6289                 instance->ev = NULL;
6290         }
6291 
6292         /* cancel all wait events */
6293         wake_up_all(&instance->int_cmd_wait_q);
6294 
6295         tasklet_kill(&instance->isr_tasklet);
6296 
6297         /*
6298          * Take the instance off the instance array. Note that we will not
6299          * decrement the max_index. We let this array be sparse array
6300          */
6301         for (i = 0; i < megasas_mgmt_info.max_index; i++) {
6302                 if (megasas_mgmt_info.instance[i] == instance) {
6303                         megasas_mgmt_info.count--;
6304                         megasas_mgmt_info.instance[i] = NULL;
6305 
6306                         break;
6307                 }
6308         }
6309 
6310         instance->instancet->disable_intr(instance);
6311 
6312         megasas_destroy_irqs(instance);
6313 
6314         if (instance->msix_vectors)
6315                 pci_disable_msix(instance->pdev);
6316 
6317         if (instance->ctrl_context) {
6318                 megasas_release_fusion(instance);
6319                         pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
6320                                 (sizeof(struct MR_PD_CFG_SEQ) *
6321                                         (MAX_PHYSICAL_DEVICES - 1));
6322                 for (i = 0; i < 2 ; i++) {
6323                         if (fusion->ld_map[i])
6324                                 dma_free_coherent(&instance->pdev->dev,
6325                                                   fusion->max_map_sz,
6326                                                   fusion->ld_map[i],
6327                                                   fusion->ld_map_phys[i]);
6328                         if (fusion->ld_drv_map[i])
6329                                 free_pages((ulong)fusion->ld_drv_map[i],
6330                                         fusion->drv_map_pages);
6331                         if (fusion->pd_seq_sync[i])
6332                                 dma_free_coherent(&instance->pdev->dev,
6333                                         pd_seq_map_sz,
6334                                         fusion->pd_seq_sync[i],
6335                                         fusion->pd_seq_phys[i]);
6336                 }
6337                 free_pages((ulong)instance->ctrl_context,
6338                         instance->ctrl_context_pages);
6339         } else {
6340                 megasas_release_mfi(instance);
6341                 pci_free_consistent(pdev, sizeof(u32),
6342                                     instance->producer,
6343                                     instance->producer_h);
6344                 pci_free_consistent(pdev, sizeof(u32),
6345                                     instance->consumer,
6346                                     instance->consumer_h);
6347         }
6348 
6349         kfree(instance->ctrl_info);
6350 
6351         if (instance->evt_detail)
6352                 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
6353                                 instance->evt_detail, instance->evt_detail_h);
6354 
6355         if (instance->pd_info)
6356                 pci_free_consistent(pdev, sizeof(struct MR_PD_INFO),
6357                                         instance->pd_info,
6358                                         instance->pd_info_h);
6359         if (instance->vf_affiliation)
6360                 pci_free_consistent(pdev, (MAX_LOGICAL_DRIVES + 1) *
6361                                     sizeof(struct MR_LD_VF_AFFILIATION),
6362                                     instance->vf_affiliation,
6363                                     instance->vf_affiliation_h);
6364 
6365         if (instance->vf_affiliation_111)
6366                 pci_free_consistent(pdev,
6367                                     sizeof(struct MR_LD_VF_AFFILIATION_111),
6368                                     instance->vf_affiliation_111,
6369                                     instance->vf_affiliation_111_h);
6370 
6371         if (instance->hb_host_mem)
6372                 pci_free_consistent(pdev, sizeof(struct MR_CTRL_HB_HOST_MEM),
6373                                     instance->hb_host_mem,
6374                                     instance->hb_host_mem_h);
6375 
6376         if (instance->crash_dump_buf)
6377                 pci_free_consistent(pdev, CRASH_DMA_BUF_SIZE,
6378                             instance->crash_dump_buf, instance->crash_dump_h);
6379 
6380         if (instance->system_info_buf)
6381                 pci_free_consistent(pdev, sizeof(struct MR_DRV_SYSTEM_INFO),
6382                                     instance->system_info_buf, instance->system_info_h);
6383 
6384         scsi_host_put(host);
6385 
6386         pci_disable_device(pdev);
6387 }
6388 
6389 /**
6390  * megasas_shutdown -   Shutdown entry point
6391  * @device:             Generic device structure
6392  */
6393 static void megasas_shutdown(struct pci_dev *pdev)
6394 {
6395         struct megasas_instance *instance = pci_get_drvdata(pdev);
6396 
6397         instance->unload = 1;
6398         megasas_flush_cache(instance);
6399         megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
6400         instance->instancet->disable_intr(instance);
6401         megasas_destroy_irqs(instance);
6402 
6403         if (instance->msix_vectors)
6404                 pci_disable_msix(instance->pdev);
6405 }
6406 
6407 /**
6408  * megasas_mgmt_open -  char node "open" entry point
6409  */
6410 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
6411 {
6412         /*
6413          * Allow only those users with admin rights
6414          */
6415         if (!capable(CAP_SYS_ADMIN))
6416                 return -EACCES;
6417 
6418         return 0;
6419 }
6420 
6421 /**
6422  * megasas_mgmt_fasync -        Async notifier registration from applications
6423  *
6424  * This function adds the calling process to a driver global queue. When an
6425  * event occurs, SIGIO will be sent to all processes in this queue.
6426  */
6427 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
6428 {
6429         int rc;
6430 
6431         mutex_lock(&megasas_async_queue_mutex);
6432 
6433         rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
6434 
6435         mutex_unlock(&megasas_async_queue_mutex);
6436 
6437         if (rc >= 0) {
6438                 /* For sanity check when we get ioctl */
6439                 filep->private_data = filep;
6440                 return 0;
6441         }
6442 
6443         printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
6444 
6445         return rc;
6446 }
6447 
6448 /**
6449  * megasas_mgmt_poll -  char node "poll" entry point
6450  * */
6451 static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait)
6452 {
6453         unsigned int mask;
6454         unsigned long flags;
6455 
6456         poll_wait(file, &megasas_poll_wait, wait);
6457         spin_lock_irqsave(&poll_aen_lock, flags);
6458         if (megasas_poll_wait_aen)
6459                 mask = (POLLIN | POLLRDNORM);
6460         else
6461                 mask = 0;
6462         megasas_poll_wait_aen = 0;
6463         spin_unlock_irqrestore(&poll_aen_lock, flags);
6464         return mask;
6465 }
6466 
6467 /*
6468  * megasas_set_crash_dump_params_ioctl:
6469  *              Send CRASH_DUMP_MODE DCMD to all controllers
6470  * @cmd:        MFI command frame
6471  */
6472 
6473 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd)
6474 {
6475         struct megasas_instance *local_instance;
6476         int i, error = 0;
6477         int crash_support;
6478 
6479         crash_support = cmd->frame->dcmd.mbox.w[0];
6480 
6481         for (i = 0; i < megasas_mgmt_info.max_index; i++) {
6482                 local_instance = megasas_