2 * Linux MegaRAID driver for SAS based RAID controllers
4 * Copyright (c) 2003-2012 LSI Corporation.
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 * FILE: megaraid_sas_base.c
21 * Version : 06.600.18.00-rc1
23 * Authors: LSI Corporation
27 * Adam Radford <linuxraid@lsi.com>
29 * Send feedback to: <megaraidlinux@lsi.com>
31 * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035
35 #include <linux/kernel.h>
36 #include <linux/types.h>
37 #include <linux/pci.h>
38 #include <linux/list.h>
39 #include <linux/moduleparam.h>
40 #include <linux/module.h>
41 #include <linux/spinlock.h>
42 #include <linux/interrupt.h>
43 #include <linux/delay.h>
44 #include <linux/uio.h>
45 #include <linux/slab.h>
46 #include <asm/uaccess.h>
48 #include <linux/compat.h>
49 #include <linux/blkdev.h>
50 #include <linux/mutex.h>
51 #include <linux/poll.h>
53 #include <scsi/scsi.h>
54 #include <scsi/scsi_cmnd.h>
55 #include <scsi/scsi_device.h>
56 #include <scsi/scsi_host.h>
57 #include <scsi/scsi_tcq.h>
58 #include "megaraid_sas_fusion.h"
59 #include "megaraid_sas.h"
62 * Number of sectors per IO command
63 * Will be set in megasas_init_mfi if user does not provide
65 static unsigned int max_sectors;
66 module_param_named(max_sectors, max_sectors, int, 0);
67 MODULE_PARM_DESC(max_sectors,
68 "Maximum number of sectors per IO command");
70 static int msix_disable;
71 module_param(msix_disable, int, S_IRUGO);
72 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0");
74 static unsigned int msix_vectors;
75 module_param(msix_vectors, int, S_IRUGO);
76 MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW");
78 static int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH;
79 module_param(throttlequeuedepth, int, S_IRUGO);
80 MODULE_PARM_DESC(throttlequeuedepth,
81 "Adapter queue depth when throttled due to I/O timeout. Default: 16");
83 int resetwaittime = MEGASAS_RESET_WAIT_TIME;
84 module_param(resetwaittime, int, S_IRUGO);
85 MODULE_PARM_DESC(resetwaittime, "Wait time in seconds after I/O timeout "
86 "before resetting adapter. Default: 180");
88 MODULE_LICENSE("GPL");
89 MODULE_VERSION(MEGASAS_VERSION);
90 MODULE_AUTHOR("megaraidlinux@lsi.com");
91 MODULE_DESCRIPTION("LSI MegaRAID SAS Driver");
93 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
94 static int megasas_get_pd_list(struct megasas_instance *instance);
95 static int megasas_issue_init_mfi(struct megasas_instance *instance);
96 static int megasas_register_aen(struct megasas_instance *instance,
97 u32 seq_num, u32 class_locale_word);
99 * PCI ID table for all supported controllers
101 static struct pci_device_id megasas_pci_table[] = {
103 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
105 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
107 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
109 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
111 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
113 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
115 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
117 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
118 /* xscale IOP, vega */
119 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
121 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
123 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
125 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
130 MODULE_DEVICE_TABLE(pci, megasas_pci_table);
132 static int megasas_mgmt_majorno;
133 static struct megasas_mgmt_info megasas_mgmt_info;
134 static struct fasync_struct *megasas_async_queue;
135 static DEFINE_MUTEX(megasas_async_queue_mutex);
137 static int megasas_poll_wait_aen;
138 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
139 static u32 support_poll_for_event;
141 static u32 support_device_change;
143 /* define lock for aen poll */
144 spinlock_t poll_aen_lock;
147 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
150 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs);
152 megasas_adp_reset_gen2(struct megasas_instance *instance,
153 struct megasas_register_set __iomem *reg_set);
154 static irqreturn_t megasas_isr(int irq, void *devp);
156 megasas_init_adapter_mfi(struct megasas_instance *instance);
158 megasas_build_and_issue_cmd(struct megasas_instance *instance,
159 struct scsi_cmnd *scmd);
160 static void megasas_complete_cmd_dpc(unsigned long instance_addr);
162 megasas_release_fusion(struct megasas_instance *instance);
164 megasas_ioc_init_fusion(struct megasas_instance *instance);
166 megasas_free_cmds_fusion(struct megasas_instance *instance);
168 megasas_get_map_info(struct megasas_instance *instance);
170 megasas_sync_map_info(struct megasas_instance *instance);
172 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd);
173 void megasas_reset_reply_desc(struct megasas_instance *instance);
174 int megasas_reset_fusion(struct Scsi_Host *shost);
175 void megasas_fusion_ocr_wq(struct work_struct *work);
178 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
180 instance->instancet->fire_cmd(instance,
181 cmd->frame_phys_addr, 0, instance->reg_set);
185 * megasas_get_cmd - Get a command from the free pool
186 * @instance: Adapter soft state
188 * Returns a free command from the pool
190 struct megasas_cmd *megasas_get_cmd(struct megasas_instance
194 struct megasas_cmd *cmd = NULL;
196 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
198 if (!list_empty(&instance->cmd_pool)) {
199 cmd = list_entry((&instance->cmd_pool)->next,
200 struct megasas_cmd, list);
201 list_del_init(&cmd->list);
203 printk(KERN_ERR "megasas: Command pool empty!\n");
206 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
211 * megasas_return_cmd - Return a cmd to free command pool
212 * @instance: Adapter soft state
213 * @cmd: Command packet to be returned to free command pool
216 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
220 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
223 cmd->frame_count = 0;
224 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) &&
225 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) &&
226 (instance->pdev->device != PCI_DEVICE_ID_LSI_FURY) &&
228 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
229 list_add_tail(&cmd->list, &instance->cmd_pool);
231 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
236 * The following functions are defined for xscale
237 * (deviceid : 1064R, PERC5) controllers
241 * megasas_enable_intr_xscale - Enables interrupts
242 * @regs: MFI register set
245 megasas_enable_intr_xscale(struct megasas_instance *instance)
247 struct megasas_register_set __iomem *regs;
248 regs = instance->reg_set;
249 writel(0, &(regs)->outbound_intr_mask);
251 /* Dummy readl to force pci flush */
252 readl(®s->outbound_intr_mask);
256 * megasas_disable_intr_xscale -Disables interrupt
257 * @regs: MFI register set
260 megasas_disable_intr_xscale(struct megasas_instance *instance)
262 struct megasas_register_set __iomem *regs;
264 regs = instance->reg_set;
265 writel(mask, ®s->outbound_intr_mask);
266 /* Dummy readl to force pci flush */
267 readl(®s->outbound_intr_mask);
271 * megasas_read_fw_status_reg_xscale - returns the current FW status value
272 * @regs: MFI register set
275 megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs)
277 return readl(&(regs)->outbound_msg_0);
280 * megasas_clear_interrupt_xscale - Check & clear interrupt
281 * @regs: MFI register set
284 megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs)
289 * Check if it is our interrupt
291 status = readl(®s->outbound_intr_status);
293 if (status & MFI_OB_INTR_STATUS_MASK)
294 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
295 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
296 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
299 * Clear the interrupt by writing back the same value
302 writel(status, ®s->outbound_intr_status);
304 /* Dummy readl to force pci flush */
305 readl(®s->outbound_intr_status);
311 * megasas_fire_cmd_xscale - Sends command to the FW
312 * @frame_phys_addr : Physical address of cmd
313 * @frame_count : Number of frames for the command
314 * @regs : MFI register set
317 megasas_fire_cmd_xscale(struct megasas_instance *instance,
318 dma_addr_t frame_phys_addr,
320 struct megasas_register_set __iomem *regs)
323 spin_lock_irqsave(&instance->hba_lock, flags);
324 writel((frame_phys_addr >> 3)|(frame_count),
325 &(regs)->inbound_queue_port);
326 spin_unlock_irqrestore(&instance->hba_lock, flags);
330 * megasas_adp_reset_xscale - For controller reset
331 * @regs: MFI register set
334 megasas_adp_reset_xscale(struct megasas_instance *instance,
335 struct megasas_register_set __iomem *regs)
339 writel(MFI_ADP_RESET, ®s->inbound_doorbell);
341 for (i = 0; i < 3; i++)
342 msleep(1000); /* sleep for 3 secs */
344 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
345 printk(KERN_NOTICE "pcidata = %x\n", pcidata);
347 printk(KERN_NOTICE "mfi 1068 offset read=%x\n", pcidata);
349 pci_write_config_dword(instance->pdev,
350 MFI_1068_PCSR_OFFSET, pcidata);
352 for (i = 0; i < 2; i++)
353 msleep(1000); /* need to wait 2 secs again */
356 pci_read_config_dword(instance->pdev,
357 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
358 printk(KERN_NOTICE "1068 offset handshake read=%x\n", pcidata);
359 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
360 printk(KERN_NOTICE "1068 offset pcidt=%x\n", pcidata);
362 pci_write_config_dword(instance->pdev,
363 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
370 * megasas_check_reset_xscale - For controller reset check
371 * @regs: MFI register set
374 megasas_check_reset_xscale(struct megasas_instance *instance,
375 struct megasas_register_set __iomem *regs)
378 consumer = *instance->consumer;
380 if ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) &&
381 (*instance->consumer == MEGASAS_ADPRESET_INPROG_SIGN)) {
387 static struct megasas_instance_template megasas_instance_template_xscale = {
389 .fire_cmd = megasas_fire_cmd_xscale,
390 .enable_intr = megasas_enable_intr_xscale,
391 .disable_intr = megasas_disable_intr_xscale,
392 .clear_intr = megasas_clear_intr_xscale,
393 .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
394 .adp_reset = megasas_adp_reset_xscale,
395 .check_reset = megasas_check_reset_xscale,
396 .service_isr = megasas_isr,
397 .tasklet = megasas_complete_cmd_dpc,
398 .init_adapter = megasas_init_adapter_mfi,
399 .build_and_issue_cmd = megasas_build_and_issue_cmd,
400 .issue_dcmd = megasas_issue_dcmd,
404 * This is the end of set of functions & definitions specific
405 * to xscale (deviceid : 1064R, PERC5) controllers
409 * The following functions are defined for ppc (deviceid : 0x60)
414 * megasas_enable_intr_ppc - Enables interrupts
415 * @regs: MFI register set
418 megasas_enable_intr_ppc(struct megasas_instance *instance)
420 struct megasas_register_set __iomem *regs;
421 regs = instance->reg_set;
422 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
424 writel(~0x80000000, &(regs)->outbound_intr_mask);
426 /* Dummy readl to force pci flush */
427 readl(®s->outbound_intr_mask);
431 * megasas_disable_intr_ppc - Disable interrupt
432 * @regs: MFI register set
435 megasas_disable_intr_ppc(struct megasas_instance *instance)
437 struct megasas_register_set __iomem *regs;
438 u32 mask = 0xFFFFFFFF;
439 regs = instance->reg_set;
440 writel(mask, ®s->outbound_intr_mask);
441 /* Dummy readl to force pci flush */
442 readl(®s->outbound_intr_mask);
446 * megasas_read_fw_status_reg_ppc - returns the current FW status value
447 * @regs: MFI register set
450 megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs)
452 return readl(&(regs)->outbound_scratch_pad);
456 * megasas_clear_interrupt_ppc - Check & clear interrupt
457 * @regs: MFI register set
460 megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs)
462 u32 status, mfiStatus = 0;
465 * Check if it is our interrupt
467 status = readl(®s->outbound_intr_status);
469 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
470 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
472 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
473 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
476 * Clear the interrupt by writing back the same value
478 writel(status, ®s->outbound_doorbell_clear);
480 /* Dummy readl to force pci flush */
481 readl(®s->outbound_doorbell_clear);
487 * megasas_fire_cmd_ppc - Sends command to the FW
488 * @frame_phys_addr : Physical address of cmd
489 * @frame_count : Number of frames for the command
490 * @regs : MFI register set
493 megasas_fire_cmd_ppc(struct megasas_instance *instance,
494 dma_addr_t frame_phys_addr,
496 struct megasas_register_set __iomem *regs)
499 spin_lock_irqsave(&instance->hba_lock, flags);
500 writel((frame_phys_addr | (frame_count<<1))|1,
501 &(regs)->inbound_queue_port);
502 spin_unlock_irqrestore(&instance->hba_lock, flags);
506 * megasas_check_reset_ppc - For controller reset check
507 * @regs: MFI register set
510 megasas_check_reset_ppc(struct megasas_instance *instance,
511 struct megasas_register_set __iomem *regs)
513 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL)
519 static struct megasas_instance_template megasas_instance_template_ppc = {
521 .fire_cmd = megasas_fire_cmd_ppc,
522 .enable_intr = megasas_enable_intr_ppc,
523 .disable_intr = megasas_disable_intr_ppc,
524 .clear_intr = megasas_clear_intr_ppc,
525 .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
526 .adp_reset = megasas_adp_reset_xscale,
527 .check_reset = megasas_check_reset_ppc,
528 .service_isr = megasas_isr,
529 .tasklet = megasas_complete_cmd_dpc,
530 .init_adapter = megasas_init_adapter_mfi,
531 .build_and_issue_cmd = megasas_build_and_issue_cmd,
532 .issue_dcmd = megasas_issue_dcmd,
536 * megasas_enable_intr_skinny - Enables interrupts
537 * @regs: MFI register set
540 megasas_enable_intr_skinny(struct megasas_instance *instance)
542 struct megasas_register_set __iomem *regs;
543 regs = instance->reg_set;
544 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
546 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
548 /* Dummy readl to force pci flush */
549 readl(®s->outbound_intr_mask);
553 * megasas_disable_intr_skinny - Disables interrupt
554 * @regs: MFI register set
557 megasas_disable_intr_skinny(struct megasas_instance *instance)
559 struct megasas_register_set __iomem *regs;
560 u32 mask = 0xFFFFFFFF;
561 regs = instance->reg_set;
562 writel(mask, ®s->outbound_intr_mask);
563 /* Dummy readl to force pci flush */
564 readl(®s->outbound_intr_mask);
568 * megasas_read_fw_status_reg_skinny - returns the current FW status value
569 * @regs: MFI register set
572 megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs)
574 return readl(&(regs)->outbound_scratch_pad);
578 * megasas_clear_interrupt_skinny - Check & clear interrupt
579 * @regs: MFI register set
582 megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs)
588 * Check if it is our interrupt
590 status = readl(®s->outbound_intr_status);
592 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
597 * Check if it is our interrupt
599 if ((megasas_read_fw_status_reg_skinny(regs) & MFI_STATE_MASK) ==
601 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
603 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
606 * Clear the interrupt by writing back the same value
608 writel(status, ®s->outbound_intr_status);
611 * dummy read to flush PCI
613 readl(®s->outbound_intr_status);
619 * megasas_fire_cmd_skinny - Sends command to the FW
620 * @frame_phys_addr : Physical address of cmd
621 * @frame_count : Number of frames for the command
622 * @regs : MFI register set
625 megasas_fire_cmd_skinny(struct megasas_instance *instance,
626 dma_addr_t frame_phys_addr,
628 struct megasas_register_set __iomem *regs)
631 spin_lock_irqsave(&instance->hba_lock, flags);
632 writel(0, &(regs)->inbound_high_queue_port);
633 writel((frame_phys_addr | (frame_count<<1))|1,
634 &(regs)->inbound_low_queue_port);
635 spin_unlock_irqrestore(&instance->hba_lock, flags);
639 * megasas_check_reset_skinny - For controller reset check
640 * @regs: MFI register set
643 megasas_check_reset_skinny(struct megasas_instance *instance,
644 struct megasas_register_set __iomem *regs)
646 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL)
652 static struct megasas_instance_template megasas_instance_template_skinny = {
654 .fire_cmd = megasas_fire_cmd_skinny,
655 .enable_intr = megasas_enable_intr_skinny,
656 .disable_intr = megasas_disable_intr_skinny,
657 .clear_intr = megasas_clear_intr_skinny,
658 .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
659 .adp_reset = megasas_adp_reset_gen2,
660 .check_reset = megasas_check_reset_skinny,
661 .service_isr = megasas_isr,
662 .tasklet = megasas_complete_cmd_dpc,
663 .init_adapter = megasas_init_adapter_mfi,
664 .build_and_issue_cmd = megasas_build_and_issue_cmd,
665 .issue_dcmd = megasas_issue_dcmd,
670 * The following functions are defined for gen2 (deviceid : 0x78 0x79)
675 * megasas_enable_intr_gen2 - Enables interrupts
676 * @regs: MFI register set
679 megasas_enable_intr_gen2(struct megasas_instance *instance)
681 struct megasas_register_set __iomem *regs;
682 regs = instance->reg_set;
683 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
685 /* write ~0x00000005 (4 & 1) to the intr mask*/
686 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
688 /* Dummy readl to force pci flush */
689 readl(®s->outbound_intr_mask);
693 * megasas_disable_intr_gen2 - Disables interrupt
694 * @regs: MFI register set
697 megasas_disable_intr_gen2(struct megasas_instance *instance)
699 struct megasas_register_set __iomem *regs;
700 u32 mask = 0xFFFFFFFF;
701 regs = instance->reg_set;
702 writel(mask, ®s->outbound_intr_mask);
703 /* Dummy readl to force pci flush */
704 readl(®s->outbound_intr_mask);
708 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
709 * @regs: MFI register set
712 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs)
714 return readl(&(regs)->outbound_scratch_pad);
718 * megasas_clear_interrupt_gen2 - Check & clear interrupt
719 * @regs: MFI register set
722 megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs)
727 * Check if it is our interrupt
729 status = readl(®s->outbound_intr_status);
731 if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
732 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
734 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
735 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
739 * Clear the interrupt by writing back the same value
742 writel(status, ®s->outbound_doorbell_clear);
744 /* Dummy readl to force pci flush */
745 readl(®s->outbound_intr_status);
750 * megasas_fire_cmd_gen2 - Sends command to the FW
751 * @frame_phys_addr : Physical address of cmd
752 * @frame_count : Number of frames for the command
753 * @regs : MFI register set
756 megasas_fire_cmd_gen2(struct megasas_instance *instance,
757 dma_addr_t frame_phys_addr,
759 struct megasas_register_set __iomem *regs)
762 spin_lock_irqsave(&instance->hba_lock, flags);
763 writel((frame_phys_addr | (frame_count<<1))|1,
764 &(regs)->inbound_queue_port);
765 spin_unlock_irqrestore(&instance->hba_lock, flags);
769 * megasas_adp_reset_gen2 - For controller reset
770 * @regs: MFI register set
773 megasas_adp_reset_gen2(struct megasas_instance *instance,
774 struct megasas_register_set __iomem *reg_set)
778 u32 *seq_offset = ®_set->seq_offset;
779 u32 *hostdiag_offset = ®_set->host_diag;
781 if (instance->instancet == &megasas_instance_template_skinny) {
782 seq_offset = ®_set->fusion_seq_offset;
783 hostdiag_offset = ®_set->fusion_host_diag;
786 writel(0, seq_offset);
787 writel(4, seq_offset);
788 writel(0xb, seq_offset);
789 writel(2, seq_offset);
790 writel(7, seq_offset);
791 writel(0xd, seq_offset);
795 HostDiag = (u32)readl(hostdiag_offset);
797 while ( !( HostDiag & DIAG_WRITE_ENABLE) ) {
799 HostDiag = (u32)readl(hostdiag_offset);
800 printk(KERN_NOTICE "RESETGEN2: retry=%x, hostdiag=%x\n",
808 printk(KERN_NOTICE "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
810 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
814 HostDiag = (u32)readl(hostdiag_offset);
815 while ( ( HostDiag & DIAG_RESET_ADAPTER) ) {
817 HostDiag = (u32)readl(hostdiag_offset);
818 printk(KERN_NOTICE "RESET_GEN2: retry=%x, hostdiag=%x\n",
829 * megasas_check_reset_gen2 - For controller reset check
830 * @regs: MFI register set
833 megasas_check_reset_gen2(struct megasas_instance *instance,
834 struct megasas_register_set __iomem *regs)
836 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
843 static struct megasas_instance_template megasas_instance_template_gen2 = {
845 .fire_cmd = megasas_fire_cmd_gen2,
846 .enable_intr = megasas_enable_intr_gen2,
847 .disable_intr = megasas_disable_intr_gen2,
848 .clear_intr = megasas_clear_intr_gen2,
849 .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
850 .adp_reset = megasas_adp_reset_gen2,
851 .check_reset = megasas_check_reset_gen2,
852 .service_isr = megasas_isr,
853 .tasklet = megasas_complete_cmd_dpc,
854 .init_adapter = megasas_init_adapter_mfi,
855 .build_and_issue_cmd = megasas_build_and_issue_cmd,
856 .issue_dcmd = megasas_issue_dcmd,
860 * This is the end of set of functions & definitions
861 * specific to gen2 (deviceid : 0x78, 0x79) controllers
865 * Template added for TB (Fusion)
867 extern struct megasas_instance_template megasas_instance_template_fusion;
870 * megasas_issue_polled - Issues a polling command
871 * @instance: Adapter soft state
872 * @cmd: Command packet to be issued
874 * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
877 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
880 struct megasas_header *frame_hdr = &cmd->frame->hdr;
882 frame_hdr->cmd_status = 0xFF;
883 frame_hdr->flags |= MFI_FRAME_DONT_POST_IN_REPLY_QUEUE;
886 * Issue the frame using inbound queue port
888 instance->instancet->issue_dcmd(instance, cmd);
891 * Wait for cmd_status to change
893 return wait_and_poll(instance, cmd);
897 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds
898 * @instance: Adapter soft state
899 * @cmd: Command to be issued
901 * This function waits on an event for the command to be returned from ISR.
902 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
903 * Used to issue ioctl commands.
906 megasas_issue_blocked_cmd(struct megasas_instance *instance,
907 struct megasas_cmd *cmd)
909 cmd->cmd_status = ENODATA;
911 instance->instancet->issue_dcmd(instance, cmd);
913 wait_event(instance->int_cmd_wait_q, cmd->cmd_status != ENODATA);
919 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd
920 * @instance: Adapter soft state
921 * @cmd_to_abort: Previously issued cmd to be aborted
923 * MFI firmware can abort previously issued AEN command (automatic event
924 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
925 * cmd and waits for return status.
926 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
929 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
930 struct megasas_cmd *cmd_to_abort)
932 struct megasas_cmd *cmd;
933 struct megasas_abort_frame *abort_fr;
935 cmd = megasas_get_cmd(instance);
940 abort_fr = &cmd->frame->abort;
943 * Prepare and issue the abort frame
945 abort_fr->cmd = MFI_CMD_ABORT;
946 abort_fr->cmd_status = 0xFF;
948 abort_fr->abort_context = cmd_to_abort->index;
949 abort_fr->abort_mfi_phys_addr_lo = cmd_to_abort->frame_phys_addr;
950 abort_fr->abort_mfi_phys_addr_hi = 0;
953 cmd->cmd_status = 0xFF;
955 instance->instancet->issue_dcmd(instance, cmd);
958 * Wait for this cmd to complete
960 wait_event(instance->abort_cmd_wait_q, cmd->cmd_status != 0xFF);
963 megasas_return_cmd(instance, cmd);
968 * megasas_make_sgl32 - Prepares 32-bit SGL
969 * @instance: Adapter soft state
970 * @scp: SCSI command from the mid-layer
971 * @mfi_sgl: SGL to be filled in
973 * If successful, this function returns the number of SG elements. Otherwise,
977 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
978 union megasas_sgl *mfi_sgl)
982 struct scatterlist *os_sgl;
984 sge_count = scsi_dma_map(scp);
985 BUG_ON(sge_count < 0);
988 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
989 mfi_sgl->sge32[i].length = sg_dma_len(os_sgl);
990 mfi_sgl->sge32[i].phys_addr = sg_dma_address(os_sgl);
997 * megasas_make_sgl64 - Prepares 64-bit SGL
998 * @instance: Adapter soft state
999 * @scp: SCSI command from the mid-layer
1000 * @mfi_sgl: SGL to be filled in
1002 * If successful, this function returns the number of SG elements. Otherwise,
1006 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1007 union megasas_sgl *mfi_sgl)
1011 struct scatterlist *os_sgl;
1013 sge_count = scsi_dma_map(scp);
1014 BUG_ON(sge_count < 0);
1017 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1018 mfi_sgl->sge64[i].length = sg_dma_len(os_sgl);
1019 mfi_sgl->sge64[i].phys_addr = sg_dma_address(os_sgl);
1026 * megasas_make_sgl_skinny - Prepares IEEE SGL
1027 * @instance: Adapter soft state
1028 * @scp: SCSI command from the mid-layer
1029 * @mfi_sgl: SGL to be filled in
1031 * If successful, this function returns the number of SG elements. Otherwise,
1035 megasas_make_sgl_skinny(struct megasas_instance *instance,
1036 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1040 struct scatterlist *os_sgl;
1042 sge_count = scsi_dma_map(scp);
1045 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1046 mfi_sgl->sge_skinny[i].length = sg_dma_len(os_sgl);
1047 mfi_sgl->sge_skinny[i].phys_addr =
1048 sg_dma_address(os_sgl);
1049 mfi_sgl->sge_skinny[i].flag = 0;
1056 * megasas_get_frame_count - Computes the number of frames
1057 * @frame_type : type of frame- io or pthru frame
1058 * @sge_count : number of sg elements
1060 * Returns the number of frames required for numnber of sge's (sge_count)
1063 static u32 megasas_get_frame_count(struct megasas_instance *instance,
1064 u8 sge_count, u8 frame_type)
1071 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1072 sizeof(struct megasas_sge32);
1074 if (instance->flag_ieee) {
1075 sge_sz = sizeof(struct megasas_sge_skinny);
1079 * Main frame can contain 2 SGEs for 64-bit SGLs and
1080 * 3 SGEs for 32-bit SGLs for ldio &
1081 * 1 SGEs for 64-bit SGLs and
1082 * 2 SGEs for 32-bit SGLs for pthru frame
1084 if (unlikely(frame_type == PTHRU_FRAME)) {
1085 if (instance->flag_ieee == 1) {
1086 num_cnt = sge_count - 1;
1087 } else if (IS_DMA64)
1088 num_cnt = sge_count - 1;
1090 num_cnt = sge_count - 2;
1092 if (instance->flag_ieee == 1) {
1093 num_cnt = sge_count - 1;
1094 } else if (IS_DMA64)
1095 num_cnt = sge_count - 2;
1097 num_cnt = sge_count - 3;
1101 sge_bytes = sge_sz * num_cnt;
1103 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1104 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1109 if (frame_count > 7)
1115 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1116 * @instance: Adapter soft state
1117 * @scp: SCSI command
1118 * @cmd: Command to be prepared in
1120 * This function prepares CDB commands. These are typcially pass-through
1121 * commands to the devices.
1124 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1125 struct megasas_cmd *cmd)
1130 struct megasas_pthru_frame *pthru;
1132 is_logical = MEGASAS_IS_LOGICAL(scp);
1133 device_id = MEGASAS_DEV_INDEX(instance, scp);
1134 pthru = (struct megasas_pthru_frame *)cmd->frame;
1136 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1137 flags = MFI_FRAME_DIR_WRITE;
1138 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1139 flags = MFI_FRAME_DIR_READ;
1140 else if (scp->sc_data_direction == PCI_DMA_NONE)
1141 flags = MFI_FRAME_DIR_NONE;
1143 if (instance->flag_ieee == 1) {
1144 flags |= MFI_FRAME_IEEE;
1148 * Prepare the DCDB frame
1150 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1151 pthru->cmd_status = 0x0;
1152 pthru->scsi_status = 0x0;
1153 pthru->target_id = device_id;
1154 pthru->lun = scp->device->lun;
1155 pthru->cdb_len = scp->cmd_len;
1158 pthru->flags = flags;
1159 pthru->data_xfer_len = scsi_bufflen(scp);
1161 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1164 * If the command is for the tape device, set the
1165 * pthru timeout to the os layer timeout value.
1167 if (scp->device->type == TYPE_TAPE) {
1168 if ((scp->request->timeout / HZ) > 0xFFFF)
1169 pthru->timeout = 0xFFFF;
1171 pthru->timeout = scp->request->timeout / HZ;
1177 if (instance->flag_ieee == 1) {
1178 pthru->flags |= MFI_FRAME_SGL64;
1179 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1181 } else if (IS_DMA64) {
1182 pthru->flags |= MFI_FRAME_SGL64;
1183 pthru->sge_count = megasas_make_sgl64(instance, scp,
1186 pthru->sge_count = megasas_make_sgl32(instance, scp,
1189 if (pthru->sge_count > instance->max_num_sge) {
1190 printk(KERN_ERR "megasas: DCDB two many SGE NUM=%x\n",
1196 * Sense info specific
1198 pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1199 pthru->sense_buf_phys_addr_hi = 0;
1200 pthru->sense_buf_phys_addr_lo = cmd->sense_phys_addr;
1203 * Compute the total number of frames this command consumes. FW uses
1204 * this number to pull sufficient number of frames from host memory.
1206 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1209 return cmd->frame_count;
1213 * megasas_build_ldio - Prepares IOs to logical devices
1214 * @instance: Adapter soft state
1215 * @scp: SCSI command
1216 * @cmd: Command to be prepared
1218 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1221 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1222 struct megasas_cmd *cmd)
1225 u8 sc = scp->cmnd[0];
1227 struct megasas_io_frame *ldio;
1229 device_id = MEGASAS_DEV_INDEX(instance, scp);
1230 ldio = (struct megasas_io_frame *)cmd->frame;
1232 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1233 flags = MFI_FRAME_DIR_WRITE;
1234 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1235 flags = MFI_FRAME_DIR_READ;
1237 if (instance->flag_ieee == 1) {
1238 flags |= MFI_FRAME_IEEE;
1242 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1244 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1245 ldio->cmd_status = 0x0;
1246 ldio->scsi_status = 0x0;
1247 ldio->target_id = device_id;
1249 ldio->reserved_0 = 0;
1251 ldio->flags = flags;
1252 ldio->start_lba_hi = 0;
1253 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1256 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1258 if (scp->cmd_len == 6) {
1259 ldio->lba_count = (u32) scp->cmnd[4];
1260 ldio->start_lba_lo = ((u32) scp->cmnd[1] << 16) |
1261 ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];
1263 ldio->start_lba_lo &= 0x1FFFFF;
1267 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1269 else if (scp->cmd_len == 10) {
1270 ldio->lba_count = (u32) scp->cmnd[8] |
1271 ((u32) scp->cmnd[7] << 8);
1272 ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1273 ((u32) scp->cmnd[3] << 16) |
1274 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1278 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1280 else if (scp->cmd_len == 12) {
1281 ldio->lba_count = ((u32) scp->cmnd[6] << 24) |
1282 ((u32) scp->cmnd[7] << 16) |
1283 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1285 ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1286 ((u32) scp->cmnd[3] << 16) |
1287 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1291 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1293 else if (scp->cmd_len == 16) {
1294 ldio->lba_count = ((u32) scp->cmnd[10] << 24) |
1295 ((u32) scp->cmnd[11] << 16) |
1296 ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
1298 ldio->start_lba_lo = ((u32) scp->cmnd[6] << 24) |
1299 ((u32) scp->cmnd[7] << 16) |
1300 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1302 ldio->start_lba_hi = ((u32) scp->cmnd[2] << 24) |
1303 ((u32) scp->cmnd[3] << 16) |
1304 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1311 if (instance->flag_ieee) {
1312 ldio->flags |= MFI_FRAME_SGL64;
1313 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1315 } else if (IS_DMA64) {
1316 ldio->flags |= MFI_FRAME_SGL64;
1317 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1319 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1321 if (ldio->sge_count > instance->max_num_sge) {
1322 printk(KERN_ERR "megasas: build_ld_io: sge_count = %x\n",
1328 * Sense info specific
1330 ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1331 ldio->sense_buf_phys_addr_hi = 0;
1332 ldio->sense_buf_phys_addr_lo = cmd->sense_phys_addr;
1335 * Compute the total number of frames this command consumes. FW uses
1336 * this number to pull sufficient number of frames from host memory.
1338 cmd->frame_count = megasas_get_frame_count(instance,
1339 ldio->sge_count, IO_FRAME);
1341 return cmd->frame_count;
1345 * megasas_is_ldio - Checks if the cmd is for logical drive
1346 * @scmd: SCSI command
1348 * Called by megasas_queue_command to find out if the command to be queued
1349 * is a logical drive command
1351 inline int megasas_is_ldio(struct scsi_cmnd *cmd)
1353 if (!MEGASAS_IS_LOGICAL(cmd))
1355 switch (cmd->cmnd[0]) {
1371 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds
1373 * @instance: Adapter soft state
1376 megasas_dump_pending_frames(struct megasas_instance *instance)
1378 struct megasas_cmd *cmd;
1380 union megasas_sgl *mfi_sgl;
1381 struct megasas_io_frame *ldio;
1382 struct megasas_pthru_frame *pthru;
1384 u32 max_cmd = instance->max_fw_cmds;
1386 printk(KERN_ERR "\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1387 printk(KERN_ERR "megasas[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1389 printk(KERN_ERR "\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1391 printk(KERN_ERR "\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1393 printk(KERN_ERR "megasas[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1394 for (i = 0; i < max_cmd; i++) {
1395 cmd = instance->cmd_list[i];
1398 printk(KERN_ERR "megasas[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1399 if (megasas_is_ldio(cmd->scmd)){
1400 ldio = (struct megasas_io_frame *)cmd->frame;
1401 mfi_sgl = &ldio->sgl;
1402 sgcount = ldio->sge_count;
1403 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",instance->host->host_no, cmd->frame_count,ldio->cmd,ldio->target_id, ldio->start_lba_lo,ldio->start_lba_hi,ldio->sense_buf_phys_addr_lo,sgcount);
1406 pthru = (struct megasas_pthru_frame *) cmd->frame;
1407 mfi_sgl = &pthru->sgl;
1408 sgcount = pthru->sge_count;
1409 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",instance->host->host_no,cmd->frame_count,pthru->cmd,pthru->target_id,pthru->lun,pthru->cdb_len , pthru->data_xfer_len,pthru->sense_buf_phys_addr_lo,sgcount);
1411 if(megasas_dbg_lvl & MEGASAS_DBG_LVL){
1412 for (n = 0; n < sgcount; n++){
1414 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%08lx ",mfi_sgl->sge64[n].length , (unsigned long)mfi_sgl->sge64[n].phys_addr) ;
1416 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%x ",mfi_sgl->sge32[n].length , mfi_sgl->sge32[n].phys_addr) ;
1419 printk(KERN_ERR "\n");
1421 printk(KERN_ERR "\nmegasas[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1422 for (i = 0; i < max_cmd; i++) {
1424 cmd = instance->cmd_list[i];
1426 if(cmd->sync_cmd == 1){
1427 printk(KERN_ERR "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1430 printk(KERN_ERR "megasas[%d]: Dumping Done.\n\n",instance->host->host_no);
1434 megasas_build_and_issue_cmd(struct megasas_instance *instance,
1435 struct scsi_cmnd *scmd)
1437 struct megasas_cmd *cmd;
1440 cmd = megasas_get_cmd(instance);
1442 return SCSI_MLQUEUE_HOST_BUSY;
1445 * Logical drive command
1447 if (megasas_is_ldio(scmd))
1448 frame_count = megasas_build_ldio(instance, scmd, cmd);
1450 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1453 goto out_return_cmd;
1456 scmd->SCp.ptr = (char *)cmd;
1459 * Issue the command to the FW
1461 atomic_inc(&instance->fw_outstanding);
1463 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1464 cmd->frame_count-1, instance->reg_set);
1468 megasas_return_cmd(instance, cmd);
1474 * megasas_queue_command - Queue entry point
1475 * @scmd: SCSI command to be queued
1476 * @done: Callback entry point
1479 megasas_queue_command_lck(struct scsi_cmnd *scmd, void (*done) (struct scsi_cmnd *))
1481 struct megasas_instance *instance;
1482 unsigned long flags;
1484 instance = (struct megasas_instance *)
1485 scmd->device->host->hostdata;
1487 if (instance->issuepend_done == 0)
1488 return SCSI_MLQUEUE_HOST_BUSY;
1490 spin_lock_irqsave(&instance->hba_lock, flags);
1492 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
1493 spin_unlock_irqrestore(&instance->hba_lock, flags);
1494 scmd->result = DID_ERROR << 16;
1499 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
1500 spin_unlock_irqrestore(&instance->hba_lock, flags);
1501 return SCSI_MLQUEUE_HOST_BUSY;
1504 spin_unlock_irqrestore(&instance->hba_lock, flags);
1506 scmd->scsi_done = done;
1509 if (MEGASAS_IS_LOGICAL(scmd) &&
1510 (scmd->device->id >= MEGASAS_MAX_LD || scmd->device->lun)) {
1511 scmd->result = DID_BAD_TARGET << 16;
1515 switch (scmd->cmnd[0]) {
1516 case SYNCHRONIZE_CACHE:
1518 * FW takes care of flush cache on its own
1519 * No need to send it down
1521 scmd->result = DID_OK << 16;
1527 if (instance->instancet->build_and_issue_cmd(instance, scmd)) {
1528 printk(KERN_ERR "megasas: Err returned from build_and_issue_cmd\n");
1529 return SCSI_MLQUEUE_HOST_BUSY;
1539 static DEF_SCSI_QCMD(megasas_queue_command)
1541 static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1545 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1547 if ((megasas_mgmt_info.instance[i]) &&
1548 (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1549 return megasas_mgmt_info.instance[i];
1555 static int megasas_slave_configure(struct scsi_device *sdev)
1558 struct megasas_instance *instance ;
1560 instance = megasas_lookup_instance(sdev->host->host_no);
1563 * Don't export physical disk devices to the disk driver.
1565 * FIXME: Currently we don't export them to the midlayer at all.
1566 * That will be fixed once LSI engineers have audited the
1567 * firmware for possible issues.
1569 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS &&
1570 sdev->type == TYPE_DISK) {
1571 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1573 if (instance->pd_list[pd_index].driveState ==
1574 MR_PD_STATE_SYSTEM) {
1575 blk_queue_rq_timeout(sdev->request_queue,
1576 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
1583 * The RAID firmware may require extended timeouts.
1585 blk_queue_rq_timeout(sdev->request_queue,
1586 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
1590 static int megasas_slave_alloc(struct scsi_device *sdev)
1593 struct megasas_instance *instance ;
1594 instance = megasas_lookup_instance(sdev->host->host_no);
1595 if ((sdev->channel < MEGASAS_MAX_PD_CHANNELS) &&
1596 (sdev->type == TYPE_DISK)) {
1598 * Open the OS scan to the SYSTEM PD
1601 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1603 if ((instance->pd_list[pd_index].driveState ==
1604 MR_PD_STATE_SYSTEM) &&
1605 (instance->pd_list[pd_index].driveType ==
1614 void megaraid_sas_kill_hba(struct megasas_instance *instance)
1616 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1617 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
1618 (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
1619 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
1620 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
1621 writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
1623 writel(MFI_STOP_ADP, &instance->reg_set->inbound_doorbell);
1628 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
1629 * restored to max value
1630 * @instance: Adapter soft state
1634 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
1636 unsigned long flags;
1637 if (instance->flag & MEGASAS_FW_BUSY
1638 && time_after(jiffies, instance->last_time + 5 * HZ)
1639 && atomic_read(&instance->fw_outstanding) <
1640 instance->throttlequeuedepth + 1) {
1642 spin_lock_irqsave(instance->host->host_lock, flags);
1643 instance->flag &= ~MEGASAS_FW_BUSY;
1644 if (instance->is_imr) {
1645 instance->host->can_queue =
1646 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
1648 instance->host->can_queue =
1649 instance->max_fw_cmds - MEGASAS_INT_CMDS;
1651 spin_unlock_irqrestore(instance->host->host_lock, flags);
1656 * megasas_complete_cmd_dpc - Returns FW's controller structure
1657 * @instance_addr: Address of adapter soft state
1659 * Tasklet to complete cmds
1661 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
1666 struct megasas_cmd *cmd;
1667 struct megasas_instance *instance =
1668 (struct megasas_instance *)instance_addr;
1669 unsigned long flags;
1671 /* If we have already declared adapter dead, donot complete cmds */
1672 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR )
1675 spin_lock_irqsave(&instance->completion_lock, flags);
1677 producer = *instance->producer;
1678 consumer = *instance->consumer;
1680 while (consumer != producer) {
1681 context = instance->reply_queue[consumer];
1682 if (context >= instance->max_fw_cmds) {
1683 printk(KERN_ERR "Unexpected context value %x\n",
1688 cmd = instance->cmd_list[context];
1690 megasas_complete_cmd(instance, cmd, DID_OK);
1693 if (consumer == (instance->max_fw_cmds + 1)) {
1698 *instance->consumer = producer;
1700 spin_unlock_irqrestore(&instance->completion_lock, flags);
1703 * Check if we can restore can_queue
1705 megasas_check_and_restore_queue_depth(instance);
1709 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
1712 process_fw_state_change_wq(struct work_struct *work);
1714 void megasas_do_ocr(struct megasas_instance *instance)
1716 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
1717 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
1718 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
1719 *instance->consumer = MEGASAS_ADPRESET_INPROG_SIGN;
1721 instance->instancet->disable_intr(instance);
1722 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
1723 instance->issuepend_done = 0;
1725 atomic_set(&instance->fw_outstanding, 0);
1726 megasas_internal_reset_defer_cmds(instance);
1727 process_fw_state_change_wq(&instance->work_init);
1731 * megasas_wait_for_outstanding - Wait for all outstanding cmds
1732 * @instance: Adapter soft state
1734 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
1735 * complete all its outstanding commands. Returns error if one or more IOs
1736 * are pending after this time period. It also marks the controller dead.
1738 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
1742 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
1744 unsigned long flags;
1745 struct list_head clist_local;
1746 struct megasas_cmd *reset_cmd;
1748 u8 kill_adapter_flag;
1750 spin_lock_irqsave(&instance->hba_lock, flags);
1751 adprecovery = instance->adprecovery;
1752 spin_unlock_irqrestore(&instance->hba_lock, flags);
1754 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
1756 INIT_LIST_HEAD(&clist_local);
1757 spin_lock_irqsave(&instance->hba_lock, flags);
1758 list_splice_init(&instance->internal_reset_pending_q,
1760 spin_unlock_irqrestore(&instance->hba_lock, flags);
1762 printk(KERN_NOTICE "megasas: HBA reset wait ...\n");
1763 for (i = 0; i < wait_time; i++) {
1765 spin_lock_irqsave(&instance->hba_lock, flags);
1766 adprecovery = instance->adprecovery;
1767 spin_unlock_irqrestore(&instance->hba_lock, flags);
1768 if (adprecovery == MEGASAS_HBA_OPERATIONAL)
1772 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
1773 printk(KERN_NOTICE "megasas: reset: Stopping HBA.\n");
1774 spin_lock_irqsave(&instance->hba_lock, flags);
1775 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
1776 spin_unlock_irqrestore(&instance->hba_lock, flags);
1781 while (!list_empty(&clist_local)) {
1782 reset_cmd = list_entry((&clist_local)->next,
1783 struct megasas_cmd, list);
1784 list_del_init(&reset_cmd->list);
1785 if (reset_cmd->scmd) {
1786 reset_cmd->scmd->result = DID_RESET << 16;
1787 printk(KERN_NOTICE "%d:%p reset [%02x]\n",
1788 reset_index, reset_cmd,
1789 reset_cmd->scmd->cmnd[0]);
1791 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
1792 megasas_return_cmd(instance, reset_cmd);
1793 } else if (reset_cmd->sync_cmd) {
1794 printk(KERN_NOTICE "megasas:%p synch cmds"
1798 reset_cmd->cmd_status = ENODATA;
1799 instance->instancet->fire_cmd(instance,
1800 reset_cmd->frame_phys_addr,
1801 0, instance->reg_set);
1803 printk(KERN_NOTICE "megasas: %p unexpected"
1813 for (i = 0; i < resetwaittime; i++) {
1815 int outstanding = atomic_read(&instance->fw_outstanding);
1820 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
1821 printk(KERN_NOTICE "megasas: [%2d]waiting for %d "
1822 "commands to complete\n",i,outstanding);
1824 * Call cmd completion routine. Cmd to be
1825 * be completed directly without depending on isr.
1827 megasas_complete_cmd_dpc((unsigned long)instance);
1834 kill_adapter_flag = 0;
1836 fw_state = instance->instancet->read_fw_status_reg(
1837 instance->reg_set) & MFI_STATE_MASK;
1838 if ((fw_state == MFI_STATE_FAULT) &&
1839 (instance->disableOnlineCtrlReset == 0)) {
1841 kill_adapter_flag = 2;
1844 megasas_do_ocr(instance);
1845 kill_adapter_flag = 1;
1847 /* wait for 1 secs to let FW finish the pending cmds */
1853 if (atomic_read(&instance->fw_outstanding) &&
1854 !kill_adapter_flag) {
1855 if (instance->disableOnlineCtrlReset == 0) {
1857 megasas_do_ocr(instance);
1859 /* wait for 5 secs to let FW finish the pending cmds */
1860 for (i = 0; i < wait_time; i++) {
1862 atomic_read(&instance->fw_outstanding);
1870 if (atomic_read(&instance->fw_outstanding) ||
1871 (kill_adapter_flag == 2)) {
1872 printk(KERN_NOTICE "megaraid_sas: pending cmds after reset\n");
1874 * Send signal to FW to stop processing any pending cmds.
1875 * The controller will be taken offline by the OS now.
1877 if ((instance->pdev->device ==
1878 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1879 (instance->pdev->device ==
1880 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
1881 writel(MFI_STOP_ADP,
1882 &instance->reg_set->doorbell);
1884 writel(MFI_STOP_ADP,
1885 &instance->reg_set->inbound_doorbell);
1887 megasas_dump_pending_frames(instance);
1888 spin_lock_irqsave(&instance->hba_lock, flags);
1889 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
1890 spin_unlock_irqrestore(&instance->hba_lock, flags);
1894 printk(KERN_NOTICE "megaraid_sas: no pending cmds after reset\n");
1900 * megasas_generic_reset - Generic reset routine
1901 * @scmd: Mid-layer SCSI command
1903 * This routine implements a generic reset handler for device, bus and host
1904 * reset requests. Device, bus and host specific reset handlers can use this
1905 * function after they do their specific tasks.
1907 static int megasas_generic_reset(struct scsi_cmnd *scmd)
1910 struct megasas_instance *instance;
1912 instance = (struct megasas_instance *)scmd->device->host->hostdata;
1914 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
1915 scmd->cmnd[0], scmd->retries);
1917 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
1918 printk(KERN_ERR "megasas: cannot recover from previous reset "
1923 ret_val = megasas_wait_for_outstanding(instance);
1924 if (ret_val == SUCCESS)
1925 printk(KERN_NOTICE "megasas: reset successful \n");
1927 printk(KERN_ERR "megasas: failed to do reset\n");
1933 * megasas_reset_timer - quiesce the adapter if required
1936 * Sets the FW busy flag and reduces the host->can_queue if the
1937 * cmd has not been completed within the timeout period.
1940 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
1942 struct megasas_instance *instance;
1943 unsigned long flags;
1945 if (time_after(jiffies, scmd->jiffies_at_alloc +
1946 (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) {
1947 return BLK_EH_NOT_HANDLED;
1950 instance = (struct megasas_instance *)scmd->device->host->hostdata;
1951 if (!(instance->flag & MEGASAS_FW_BUSY)) {
1952 /* FW is busy, throttle IO */
1953 spin_lock_irqsave(instance->host->host_lock, flags);
1955 instance->host->can_queue = instance->throttlequeuedepth;
1956 instance->last_time = jiffies;
1957 instance->flag |= MEGASAS_FW_BUSY;
1959 spin_unlock_irqrestore(instance->host->host_lock, flags);
1961 return BLK_EH_RESET_TIMER;
1965 * megasas_reset_device - Device reset handler entry point
1967 static int megasas_reset_device(struct scsi_cmnd *scmd)
1972 * First wait for all commands to complete
1974 ret = megasas_generic_reset(scmd);
1980 * megasas_reset_bus_host - Bus & host reset handler entry point
1982 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
1985 struct megasas_instance *instance;
1986 instance = (struct megasas_instance *)scmd->device->host->hostdata;
1989 * First wait for all commands to complete
1991 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
1992 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
1993 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
1994 ret = megasas_reset_fusion(scmd->device->host);
1996 ret = megasas_generic_reset(scmd);
2002 * megasas_bios_param - Returns disk geometry for a disk
2003 * @sdev: device handle
2004 * @bdev: block device
2005 * @capacity: drive capacity
2006 * @geom: geometry parameters
2009 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
2010 sector_t capacity, int geom[])
2016 /* Default heads (64) & sectors (32) */
2020 tmp = heads * sectors;
2021 cylinders = capacity;
2023 sector_div(cylinders, tmp);
2026 * Handle extended translation size for logical drives > 1Gb
2029 if (capacity >= 0x200000) {
2032 tmp = heads*sectors;
2033 cylinders = capacity;
2034 sector_div(cylinders, tmp);
2039 geom[2] = cylinders;
2044 static void megasas_aen_polling(struct work_struct *work);
2047 * megasas_service_aen - Processes an event notification
2048 * @instance: Adapter soft state
2049 * @cmd: AEN command completed by the ISR
2051 * For AEN, driver sends a command down to FW that is held by the FW till an
2052 * event occurs. When an event of interest occurs, FW completes the command
2053 * that it was previously holding.
2055 * This routines sends SIGIO signal to processes that have registered with the
2059 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
2061 unsigned long flags;
2063 * Don't signal app if it is just an aborted previously registered aen
2065 if ((!cmd->abort_aen) && (instance->unload == 0)) {
2066 spin_lock_irqsave(&poll_aen_lock, flags);
2067 megasas_poll_wait_aen = 1;
2068 spin_unlock_irqrestore(&poll_aen_lock, flags);
2069 wake_up(&megasas_poll_wait);
2070 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
2075 instance->aen_cmd = NULL;
2076 megasas_return_cmd(instance, cmd);
2078 if ((instance->unload == 0) &&
2079 ((instance->issuepend_done == 1))) {
2080 struct megasas_aen_event *ev;
2081 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
2083 printk(KERN_ERR "megasas_service_aen: out of memory\n");
2085 ev->instance = instance;
2087 INIT_DELAYED_WORK(&ev->hotplug_work,
2088 megasas_aen_polling);
2089 schedule_delayed_work(&ev->hotplug_work, 0);
2094 static int megasas_change_queue_depth(struct scsi_device *sdev,
2095 int queue_depth, int reason)
2097 if (reason != SCSI_QDEPTH_DEFAULT)
2100 if (queue_depth > sdev->host->can_queue)
2101 queue_depth = sdev->host->can_queue;
2102 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev),
2109 * Scsi host template for megaraid_sas driver
2111 static struct scsi_host_template megasas_template = {
2113 .module = THIS_MODULE,
2114 .name = "LSI SAS based MegaRAID driver",
2115 .proc_name = "megaraid_sas",
2116 .slave_configure = megasas_slave_configure,
2117 .slave_alloc = megasas_slave_alloc,
2118 .queuecommand = megasas_queue_command,
2119 .eh_device_reset_handler = megasas_reset_device,
2120 .eh_bus_reset_handler = megasas_reset_bus_host,
2121 .eh_host_reset_handler = megasas_reset_bus_host,
2122 .eh_timed_out = megasas_reset_timer,
2123 .bios_param = megasas_bios_param,
2124 .use_clustering = ENABLE_CLUSTERING,
2125 .change_queue_depth = megasas_change_queue_depth,
2129 * megasas_complete_int_cmd - Completes an internal command
2130 * @instance: Adapter soft state
2131 * @cmd: Command to be completed
2133 * The megasas_issue_blocked_cmd() function waits for a command to complete
2134 * after it issues a command. This function wakes up that waiting routine by
2135 * calling wake_up() on the wait queue.
2138 megasas_complete_int_cmd(struct megasas_instance *instance,
2139 struct megasas_cmd *cmd)
2141 cmd->cmd_status = cmd->frame->io.cmd_status;
2143 if (cmd->cmd_status == ENODATA) {
2144 cmd->cmd_status = 0;
2146 wake_up(&instance->int_cmd_wait_q);
2150 * megasas_complete_abort - Completes aborting a command
2151 * @instance: Adapter soft state
2152 * @cmd: Cmd that was issued to abort another cmd
2154 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
2155 * after it issues an abort on a previously issued command. This function
2156 * wakes up all functions waiting on the same wait queue.
2159 megasas_complete_abort(struct megasas_instance *instance,
2160 struct megasas_cmd *cmd)
2162 if (cmd->sync_cmd) {
2164 cmd->cmd_status = 0;
2165 wake_up(&instance->abort_cmd_wait_q);
2172 * megasas_complete_cmd - Completes a command
2173 * @instance: Adapter soft state
2174 * @cmd: Command to be completed
2175 * @alt_status: If non-zero, use this value as status to
2176 * SCSI mid-layer instead of the value returned
2177 * by the FW. This should be used if caller wants
2178 * an alternate status (as in the case of aborted
2182 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
2186 struct megasas_header *hdr = &cmd->frame->hdr;
2187 unsigned long flags;
2188 struct fusion_context *fusion = instance->ctrl_context;
2190 /* flag for the retry reset */
2191 cmd->retry_for_fw_reset = 0;
2194 cmd->scmd->SCp.ptr = NULL;
2197 case MFI_CMD_INVALID:
2198 /* Some older 1068 controller FW may keep a pended
2199 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
2200 when booting the kdump kernel. Ignore this command to
2201 prevent a kernel panic on shutdown of the kdump kernel. */
2202 printk(KERN_WARNING "megaraid_sas: MFI_CMD_INVALID command "
2204 printk(KERN_WARNING "megaraid_sas: If you have a controller "
2205 "other than PERC5, please upgrade your firmware.\n");
2207 case MFI_CMD_PD_SCSI_IO:
2208 case MFI_CMD_LD_SCSI_IO:
2211 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
2212 * issued either through an IO path or an IOCTL path. If it
2213 * was via IOCTL, we will send it to internal completion.
2215 if (cmd->sync_cmd) {
2217 megasas_complete_int_cmd(instance, cmd);
2221 case MFI_CMD_LD_READ:
2222 case MFI_CMD_LD_WRITE:
2225 cmd->scmd->result = alt_status << 16;
2231 atomic_dec(&instance->fw_outstanding);
2233 scsi_dma_unmap(cmd->scmd);
2234 cmd->scmd->scsi_done(cmd->scmd);
2235 megasas_return_cmd(instance, cmd);
2240 switch (hdr->cmd_status) {
2243 cmd->scmd->result = DID_OK << 16;
2246 case MFI_STAT_SCSI_IO_FAILED:
2247 case MFI_STAT_LD_INIT_IN_PROGRESS:
2249 (DID_ERROR << 16) | hdr->scsi_status;
2252 case MFI_STAT_SCSI_DONE_WITH_ERROR:
2254 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
2256 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
2257 memset(cmd->scmd->sense_buffer, 0,
2258 SCSI_SENSE_BUFFERSIZE);
2259 memcpy(cmd->scmd->sense_buffer, cmd->sense,
2262 cmd->scmd->result |= DRIVER_SENSE << 24;
2267 case MFI_STAT_LD_OFFLINE:
2268 case MFI_STAT_DEVICE_NOT_FOUND:
2269 cmd->scmd->result = DID_BAD_TARGET << 16;
2273 printk(KERN_DEBUG "megasas: MFI FW status %#x\n",
2275 cmd->scmd->result = DID_ERROR << 16;
2279 atomic_dec(&instance->fw_outstanding);
2281 scsi_dma_unmap(cmd->scmd);
2282 cmd->scmd->scsi_done(cmd->scmd);
2283 megasas_return_cmd(instance, cmd);
2290 /* Check for LD map update */
2291 if ((cmd->frame->dcmd.opcode == MR_DCMD_LD_MAP_GET_INFO) &&
2292 (cmd->frame->dcmd.mbox.b[1] == 1)) {
2293 fusion->fast_path_io = 0;
2294 spin_lock_irqsave(instance->host->host_lock, flags);
2295 if (cmd->frame->hdr.cmd_status != 0) {
2296 if (cmd->frame->hdr.cmd_status !=
2298 printk(KERN_WARNING "megasas: map sync"
2299 "failed, status = 0x%x.\n",
2300 cmd->frame->hdr.cmd_status);
2302 megasas_return_cmd(instance, cmd);
2303 spin_unlock_irqrestore(
2304 instance->host->host_lock,
2310 megasas_return_cmd(instance, cmd);
2313 * Set fast path IO to ZERO.
2314 * Validate Map will set proper value.
2315 * Meanwhile all IOs will go as LD IO.
2317 if (MR_ValidateMapInfo(instance))
2318 fusion->fast_path_io = 1;
2320 fusion->fast_path_io = 0;
2321 megasas_sync_map_info(instance);
2322 spin_unlock_irqrestore(instance->host->host_lock,
2326 if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
2327 cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET) {
2328 spin_lock_irqsave(&poll_aen_lock, flags);
2329 megasas_poll_wait_aen = 0;
2330 spin_unlock_irqrestore(&poll_aen_lock, flags);
2334 * See if got an event notification
2336 if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_WAIT)
2337 megasas_service_aen(instance, cmd);
2339 megasas_complete_int_cmd(instance, cmd);
2345 * Cmd issued to abort another cmd returned
2347 megasas_complete_abort(instance, cmd);
2351 printk("megasas: Unknown command completed! [0x%X]\n",
2358 * megasas_issue_pending_cmds_again - issue all pending cmds
2359 * in FW again because of the fw reset
2360 * @instance: Adapter soft state
2363 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
2365 struct megasas_cmd *cmd;
2366 struct list_head clist_local;
2367 union megasas_evt_class_locale class_locale;
2368 unsigned long flags;
2371 INIT_LIST_HEAD(&clist_local);
2372 spin_lock_irqsave(&instance->hba_lock, flags);
2373 list_splice_init(&instance->internal_reset_pending_q, &clist_local);
2374 spin_unlock_irqrestore(&instance->hba_lock, flags);
2376 while (!list_empty(&clist_local)) {
2377 cmd = list_entry((&clist_local)->next,
2378 struct megasas_cmd, list);
2379 list_del_init(&cmd->list);
2381 if (cmd->sync_cmd || cmd->scmd) {
2382 printk(KERN_NOTICE "megaraid_sas: command %p, %p:%d"
2383 "detected to be pending while HBA reset.\n",
2384 cmd, cmd->scmd, cmd->sync_cmd);
2386 cmd->retry_for_fw_reset++;
2388 if (cmd->retry_for_fw_reset == 3) {
2389 printk(KERN_NOTICE "megaraid_sas: cmd %p, %p:%d"
2390 "was tried multiple times during reset."
2391 "Shutting down the HBA\n",
2392 cmd, cmd->scmd, cmd->sync_cmd);
2393 megaraid_sas_kill_hba(instance);
2395 instance->adprecovery =
2396 MEGASAS_HW_CRITICAL_ERROR;
2401 if (cmd->sync_cmd == 1) {
2403 printk(KERN_NOTICE "megaraid_sas: unexpected"
2404 "cmd attached to internal command!\n");
2406 printk(KERN_NOTICE "megasas: %p synchronous cmd"
2407 "on the internal reset queue,"
2408 "issue it again.\n", cmd);
2409 cmd->cmd_status = ENODATA;
2410 instance->instancet->fire_cmd(instance,
2411 cmd->frame_phys_addr ,
2412 0, instance->reg_set);
2413 } else if (cmd->scmd) {
2414 printk(KERN_NOTICE "megasas: %p scsi cmd [%02x]"
2415 "detected on the internal queue, issue again.\n",
2416 cmd, cmd->scmd->cmnd[0]);
2418 atomic_inc(&instance->fw_outstanding);
2419 instance->instancet->fire_cmd(instance,
2420 cmd->frame_phys_addr,
2421 cmd->frame_count-1, instance->reg_set);
2423 printk(KERN_NOTICE "megasas: %p unexpected cmd on the"
2424 "internal reset defer list while re-issue!!\n",
2429 if (instance->aen_cmd) {
2430 printk(KERN_NOTICE "megaraid_sas: aen_cmd in def process\n");
2431 megasas_return_cmd(instance, instance->aen_cmd);
2433 instance->aen_cmd = NULL;
2437 * Initiate AEN (Asynchronous Event Notification)
2439 seq_num = instance->last_seq_num;
2440 class_locale.members.reserved = 0;
2441 class_locale.members.locale = MR_EVT_LOCALE_ALL;
2442 class_locale.members.class = MR_EVT_CLASS_DEBUG;
2444 megasas_register_aen(instance, seq_num, class_locale.word);
2448 * Move the internal reset pending commands to a deferred queue.
2450 * We move the commands pending at internal reset time to a
2451 * pending queue. This queue would be flushed after successful
2452 * completion of the internal reset sequence. if the internal reset
2453 * did not complete in time, the kernel reset handler would flush
2457 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
2459 struct megasas_cmd *cmd;
2461 u32 max_cmd = instance->max_fw_cmds;
2463 unsigned long flags;
2466 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
2467 for (i = 0; i < max_cmd; i++) {
2468 cmd = instance->cmd_list[i];
2469 if (cmd->sync_cmd == 1 || cmd->scmd) {
2470 printk(KERN_NOTICE "megasas: moving cmd[%d]:%p:%d:%p"
2471 "on the defer queue as internal\n",
2472 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
2474 if (!list_empty(&cmd->list)) {
2475 printk(KERN_NOTICE "megaraid_sas: ERROR while"
2476 " moving this cmd:%p, %d %p, it was"
2477 "discovered on some list?\n",
2478 cmd, cmd->sync_cmd, cmd->scmd);
2480 list_del_init(&cmd->list);
2483 list_add_tail(&cmd->list,
2484 &instance->internal_reset_pending_q);
2487 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
2492 process_fw_state_change_wq(struct work_struct *work)
2494 struct megasas_instance *instance =
2495 container_of(work, struct megasas_instance, work_init);
2497 unsigned long flags;
2499 if (instance->adprecovery != MEGASAS_ADPRESET_SM_INFAULT) {
2500 printk(KERN_NOTICE "megaraid_sas: error, recovery st %x \n",
2501 instance->adprecovery);
2505 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) {
2506 printk(KERN_NOTICE "megaraid_sas: FW detected to be in fault"
2507 "state, restarting it...\n");
2509 instance->instancet->disable_intr(instance);
2510 atomic_set(&instance->fw_outstanding, 0);
2512 atomic_set(&instance->fw_reset_no_pci_access, 1);
2513 instance->instancet->adp_reset(instance, instance->reg_set);
2514 atomic_set(&instance->fw_reset_no_pci_access, 0 );
2516 printk(KERN_NOTICE "megaraid_sas: FW restarted successfully,"
2517 "initiating next stage...\n");
2519 printk(KERN_NOTICE "megaraid_sas: HBA recovery state machine,"
2520 "state 2 starting...\n");
2522 /*waitting for about 20 second before start the second init*/
2523 for (wait = 0; wait < 30; wait++) {
2527 if (megasas_transition_to_ready(instance, 1)) {
2528 printk(KERN_NOTICE "megaraid_sas:adapter not ready\n");
2530 megaraid_sas_kill_hba(instance);
2531 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2535 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2536 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2537 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
2539 *instance->consumer = *instance->producer;
2541 *instance->consumer = 0;
2542 *instance->producer = 0;
2545 megasas_issue_init_mfi(instance);
2547 spin_lock_irqsave(&instance->hba_lock, flags);
2548 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
2549 spin_unlock_irqrestore(&instance->hba_lock, flags);
2550 instance->instancet->enable_intr(instance);
2552 megasas_issue_pending_cmds_again(instance);
2553 instance->issuepend_done = 1;
2559 * megasas_deplete_reply_queue - Processes all completed commands
2560 * @instance: Adapter soft state
2561 * @alt_status: Alternate status to be returned to
2562 * SCSI mid-layer instead of the status
2563 * returned by the FW
2564 * Note: this must be called with hba lock held
2567 megasas_deplete_reply_queue(struct megasas_instance *instance,
2573 if ((mfiStatus = instance->instancet->check_reset(instance,
2574 instance->reg_set)) == 1) {
2578 if ((mfiStatus = instance->instancet->clear_intr(
2581 /* Hardware may not set outbound_intr_status in MSI-X mode */
2582 if (!instance->msix_vectors)
2586 instance->mfiStatus = mfiStatus;
2588 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
2589 fw_state = instance->instancet->read_fw_status_reg(
2590 instance->reg_set) & MFI_STATE_MASK;
2592 if (fw_state != MFI_STATE_FAULT) {
2593 printk(KERN_NOTICE "megaraid_sas: fw state:%x\n",
2597 if ((fw_state == MFI_STATE_FAULT) &&
2598 (instance->disableOnlineCtrlReset == 0)) {
2599 printk(KERN_NOTICE "megaraid_sas: wait adp restart\n");
2601 if ((instance->pdev->device ==
2602 PCI_DEVICE_ID_LSI_SAS1064R) ||
2603 (instance->pdev->device ==
2604 PCI_DEVICE_ID_DELL_PERC5) ||
2605 (instance->pdev->device ==
2606 PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2608 *instance->consumer =
2609 MEGASAS_ADPRESET_INPROG_SIGN;
2613 instance->instancet->disable_intr(instance);
2614 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
2615 instance->issuepend_done = 0;
2617 atomic_set(&instance->fw_outstanding, 0);
2618 megasas_internal_reset_defer_cmds(instance);
2620 printk(KERN_NOTICE "megasas: fwState=%x, stage:%d\n",
2621 fw_state, instance->adprecovery);
2623 schedule_work(&instance->work_init);
2627 printk(KERN_NOTICE "megasas: fwstate:%x, dis_OCR=%x\n",
2628 fw_state, instance->disableOnlineCtrlReset);
2632 tasklet_schedule(&instance->isr_tasklet);
2636 * megasas_isr - isr entry point
2638 static irqreturn_t megasas_isr(int irq, void *devp)
2640 struct megasas_irq_context *irq_context = devp;
2641 struct megasas_instance *instance = irq_context->instance;
2642 unsigned long flags;
2645 if (atomic_read(&instance->fw_reset_no_pci_access))
2648 spin_lock_irqsave(&instance->hba_lock, flags);
2649 rc = megasas_deplete_reply_queue(instance, DID_OK);
2650 spin_unlock_irqrestore(&instance->hba_lock, flags);
2656 * megasas_transition_to_ready - Move the FW to READY state
2657 * @instance: Adapter soft state
2659 * During the initialization, FW passes can potentially be in any one of
2660 * several possible states. If the FW in operational, waiting-for-handshake
2661 * states, driver must take steps to bring it to ready state. Otherwise, it
2662 * has to wait for the ready state.
2665 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
2671 u32 abs_state, curr_abs_state;
2673 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;
2675 if (fw_state != MFI_STATE_READY)
2676 printk(KERN_INFO "megasas: Waiting for FW to come to ready"
2679 while (fw_state != MFI_STATE_READY) {
2682 instance->instancet->read_fw_status_reg(instance->reg_set);
2686 case MFI_STATE_FAULT:
2687 printk(KERN_DEBUG "megasas: FW in FAULT state!!\n");
2689 max_wait = MEGASAS_RESET_WAIT_TIME;
2690 cur_state = MFI_STATE_FAULT;
2695 case MFI_STATE_WAIT_HANDSHAKE:
2697 * Set the CLR bit in inbound doorbell
2699 if ((instance->pdev->device ==
2700 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2701 (instance->pdev->device ==
2702 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2703 (instance->pdev->device ==
2704 PCI_DEVICE_ID_LSI_FUSION) ||
2705 (instance->pdev->device ==
2706 PCI_DEVICE_ID_LSI_INVADER) ||
2707 (instance->pdev->device ==
2708 PCI_DEVICE_ID_LSI_FURY)) {
2710 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
2711 &instance->reg_set->doorbell);
2714 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
2715 &instance->reg_set->inbound_doorbell);
2718 max_wait = MEGASAS_RESET_WAIT_TIME;
2719 cur_state = MFI_STATE_WAIT_HANDSHAKE;
2722 case MFI_STATE_BOOT_MESSAGE_PENDING:
2723 if ((instance->pdev->device ==
2724 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2725 (instance->pdev->device ==
2726 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2727 (instance->pdev->device ==
2728 PCI_DEVICE_ID_LSI_FUSION) ||
2729 (instance->pdev->device ==
2730 PCI_DEVICE_ID_LSI_INVADER) ||
2731 (instance->pdev->device ==
2732 PCI_DEVICE_ID_LSI_FURY)) {
2733 writel(MFI_INIT_HOTPLUG,
2734 &instance->reg_set->doorbell);
2736 writel(MFI_INIT_HOTPLUG,
2737 &instance->reg_set->inbound_doorbell);
2739 max_wait = MEGASAS_RESET_WAIT_TIME;
2740 cur_state = MFI_STATE_BOOT_MESSAGE_PENDING;
2743 case MFI_STATE_OPERATIONAL:
2745 * Bring it to READY state; assuming max wait 10 secs
2747 instance->instancet->disable_intr(instance);
2748 if ((instance->pdev->device ==
2749 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2750 (instance->pdev->device ==
2751 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2752 (instance->pdev->device
2753 == PCI_DEVICE_ID_LSI_FUSION) ||
2754 (instance->pdev->device
2755 == PCI_DEVICE_ID_LSI_INVADER) ||
2756 (instance->pdev->device
2757 == PCI_DEVICE_ID_LSI_FURY)) {
2758 writel(MFI_RESET_FLAGS,
2759 &instance->reg_set->doorbell);
2760 if ((instance->pdev->device ==
2761 PCI_DEVICE_ID_LSI_FUSION) ||
2762 (instance->pdev->device ==
2763 PCI_DEVICE_ID_LSI_INVADER) ||
2764 (instance->pdev->device ==
2765 PCI_DEVICE_ID_LSI_FURY)) {
2766 for (i = 0; i < (10 * 1000); i += 20) {
2777 writel(MFI_RESET_FLAGS,
2778 &instance->reg_set->inbound_doorbell);
2780 max_wait = MEGASAS_RESET_WAIT_TIME;
2781 cur_state = MFI_STATE_OPERATIONAL;
2784 case MFI_STATE_UNDEFINED:
2786 * This state should not last for more than 2 seconds
2788 max_wait = MEGASAS_RESET_WAIT_TIME;
2789 cur_state = MFI_STATE_UNDEFINED;
2792 case MFI_STATE_BB_INIT:
2793 max_wait = MEGASAS_RESET_WAIT_TIME;
2794 cur_state = MFI_STATE_BB_INIT;
2797 case MFI_STATE_FW_INIT:
2798 max_wait = MEGASAS_RESET_WAIT_TIME;
2799 cur_state = MFI_STATE_FW_INIT;
2802 case MFI_STATE_FW_INIT_2:
2803 max_wait = MEGASAS_RESET_WAIT_TIME;
2804 cur_state = MFI_STATE_FW_INIT_2;
2807 case MFI_STATE_DEVICE_SCAN:
2808 max_wait = MEGASAS_RESET_WAIT_TIME;
2809 cur_state = MFI_STATE_DEVICE_SCAN;
2812 case MFI_STATE_FLUSH_CACHE:
2813 max_wait = MEGASAS_RESET_WAIT_TIME;
2814 cur_state = MFI_STATE_FLUSH_CACHE;
2818 printk(KERN_DEBUG "megasas: Unknown state 0x%x\n",
2824 * The cur_state should not last for more than max_wait secs
2826 for (i = 0; i < (max_wait * 1000); i++) {
2827 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) &
2830 instance->instancet->read_fw_status_reg(instance->reg_set);
2832 if (abs_state == curr_abs_state) {
2839 * Return error if fw_state hasn't changed after max_wait
2841 if (curr_abs_state == abs_state) {
2842 printk(KERN_DEBUG "FW state [%d] hasn't changed "
2843 "in %d secs\n", fw_state, max_wait);
2847 printk(KERN_INFO "megasas: FW now in Ready state\n");
2853 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
2854 * @instance: Adapter soft state
2856 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
2859 u32 max_cmd = instance->max_mfi_cmds;
2860 struct megasas_cmd *cmd;
2862 if (!instance->frame_dma_pool)
2866 * Return all frames to pool
2868 for (i = 0; i < max_cmd; i++) {
2870 cmd = instance->cmd_list[i];
2873 pci_pool_free(instance->frame_dma_pool, cmd->frame,
2874 cmd->frame_phys_addr);
2877 pci_pool_free(instance->sense_dma_pool, cmd->sense,
2878 cmd->sense_phys_addr);
2882 * Now destroy the pool itself
2884 pci_pool_destroy(instance->frame_dma_pool);
2885 pci_pool_destroy(instance->sense_dma_pool);
2887 instance->frame_dma_pool = NULL;
2888 instance->sense_dma_pool = NULL;
2892 * megasas_create_frame_pool - Creates DMA pool for cmd frames
2893 * @instance: Adapter soft state
2895 * Each command packet has an embedded DMA memory buffer that is used for
2896 * filling MFI frame and the SG list that immediately follows the frame. This
2897 * function creates those DMA memory buffers for each command packet by using
2898 * PCI pool facility.
2900 static int megasas_create_frame_pool(struct megasas_instance *instance)
2908 struct megasas_cmd *cmd;
2910 max_cmd = instance->max_mfi_cmds;
2913 * Size of our frame is 64 bytes for MFI frame, followed by max SG
2914 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer
2916 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
2917 sizeof(struct megasas_sge32);
2919 if (instance->flag_ieee) {
2920 sge_sz = sizeof(struct megasas_sge_skinny);
2924 * Calculated the number of 64byte frames required for SGL
2926 sgl_sz = sge_sz * instance->max_num_sge;
2927 frame_count = (sgl_sz + MEGAMFI_FRAME_SIZE - 1) / MEGAMFI_FRAME_SIZE;
2931 * We need one extra frame for the MFI command
2935 total_sz = MEGAMFI_FRAME_SIZE * frame_count;
2937 * Use DMA pool facility provided by PCI layer
2939 instance->frame_dma_pool = pci_pool_create("megasas frame pool",
2940 instance->pdev, total_sz, 64,
2943 if (!instance->frame_dma_pool) {
2944 printk(KERN_DEBUG "megasas: failed to setup frame pool\n");
2948 instance->sense_dma_pool = pci_pool_create("megasas sense pool",
2949 instance->pdev, 128, 4, 0);
2951 if (!instance->sense_dma_pool) {
2952 printk(KERN_DEBUG "megasas: failed to setup sense pool\n");
2954 pci_pool_destroy(instance->frame_dma_pool);
2955 instance->frame_dma_pool = NULL;
2961 * Allocate and attach a frame to each of the commands in cmd_list.
2962 * By making cmd->index as the context instead of the &cmd, we can
2963 * always use 32bit context regardless of the architecture
2965 for (i = 0; i < max_cmd; i++) {
2967 cmd = instance->cmd_list[i];
2969 cmd->frame = pci_pool_alloc(instance->frame_dma_pool,
2970 GFP_KERNEL, &cmd->frame_phys_addr);
2972 cmd->sense = pci_pool_alloc(instance->sense_dma_pool,
2973 GFP_KERNEL, &cmd->sense_phys_addr);
2976 * megasas_teardown_frame_pool() takes care of freeing
2977 * whatever has been allocated
2979 if (!cmd->frame || !cmd->sense) {
2980 printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n");
2981 megasas_teardown_frame_pool(instance);
2985 memset(cmd->frame, 0, total_sz);
2986 cmd->frame->io.context = cmd->index;
2987 cmd->frame->io.pad_0 = 0;
2988 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) &&
2989 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) &&
2990 (instance->pdev->device != PCI_DEVICE_ID_LSI_FURY) &&
2992 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
2999 * megasas_free_cmds - Free all the cmds in the free cmd pool
3000 * @instance: Adapter soft state
3002 void megasas_free_cmds(struct megasas_instance *instance)
3005 /* First free the MFI frame pool */
3006 megasas_teardown_frame_pool(instance);
3008 /* Free all the commands in the cmd_list */
3009 for (i = 0; i < instance->max_mfi_cmds; i++)
3011 kfree(instance->cmd_list[i]);
3013 /* Free the cmd_list buffer itself */
3014 kfree(instance->cmd_list);
3015 instance->cmd_list = NULL;
3017 INIT_LIST_HEAD(&instance->cmd_pool);
3021 * megasas_alloc_cmds - Allocates the command packets
3022 * @instance: Adapter soft state
3024 * Each command that is issued to the FW, whether IO commands from the OS or
3025 * internal commands like IOCTLs, are wrapped in local data structure called
3026 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
3029 * Each frame has a 32-bit field called context (tag). This context is used
3030 * to get back the megasas_cmd from the frame when a frame gets completed in
3031 * the ISR. Typically the address of the megasas_cmd itself would be used as
3032 * the context. But we wanted to keep the differences between 32 and 64 bit
3033 * systems to the mininum. We always use 32 bit integers for the context. In
3034 * this driver, the 32 bit values are the indices into an array cmd_list.
3035 * This array is used only to look up the megasas_cmd given the context. The
3036 * free commands themselves are maintained in a linked list called cmd_pool.
3038 int megasas_alloc_cmds(struct megasas_instance *instance)
3043 struct megasas_cmd *cmd;
3045 max_cmd = instance->max_mfi_cmds;
3048 * instance->cmd_list is an array of struct megasas_cmd pointers.
3049 * Allocate the dynamic array first and then allocate individual
3052 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
3054 if (!instance->cmd_list) {
3055 printk(KERN_DEBUG "megasas: out of memory\n");
3059 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
3061 for (i = 0; i < max_cmd; i++) {
3062 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
3065 if (!instance->cmd_list[i]) {
3067 for (j = 0; j < i; j++)
3068 kfree(instance->cmd_list[j]);
3070 kfree(instance->cmd_list);
3071 instance->cmd_list = NULL;
3078 * Add all the commands to command pool (instance->cmd_pool)
3080 for (i = 0; i < max_cmd; i++) {
3081 cmd = instance->cmd_list[i];
3082 memset(cmd, 0, sizeof(struct megasas_cmd));
3085 cmd->instance = instance;
3087 list_add_tail(&cmd->list, &instance->cmd_pool);
3091 * Create a frame pool and assign one frame to each cmd
3093 if (megasas_create_frame_pool(instance)) {
3094 printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n");
3095 megasas_free_cmds(instance);
3102 * megasas_get_pd_list_info - Returns FW's pd_list structure
3103 * @instance: Adapter soft state
3104 * @pd_list: pd_list structure
3106 * Issues an internal command (DCMD) to get the FW's controller PD
3107 * list structure. This information is mainly used to find out SYSTEM
3108 * supported by the FW.
3111 megasas_get_pd_list(struct megasas_instance *instance)
3113 int ret = 0, pd_index = 0;
3114 struct megasas_cmd *cmd;
3115 struct megasas_dcmd_frame *dcmd;
3116 struct MR_PD_LIST *ci;
3117 struct MR_PD_ADDRESS *pd_addr;
3118 dma_addr_t ci_h = 0;
3120 cmd = megasas_get_cmd(instance);
3123 printk(KERN_DEBUG "megasas (get_pd_list): Failed to get cmd\n");
3127 dcmd = &cmd->frame->dcmd;
3129 ci = pci_alloc_consistent(instance->pdev,
3130 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h);
3133 printk(KERN_DEBUG "Failed to alloc mem for pd_list\n");
3134 megasas_return_cmd(instance, cmd);
3138 memset(ci, 0, sizeof(*ci));
3139 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3141 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
3142 dcmd->mbox.b[1] = 0;
3143 dcmd->cmd = MFI_CMD_DCMD;
3144 dcmd->cmd_status = 0xFF;
3145 dcmd->sge_count = 1;
3146 dcmd->flags = MFI_FRAME_DIR_READ;
3149 dcmd->data_xfer_len = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST);
3150 dcmd->opcode = MR_DCMD_PD_LIST_QUERY;
3151 dcmd->sgl.sge32[0].phys_addr = ci_h;
3152 dcmd->sgl.sge32[0].length = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST);
3154 if (!megasas_issue_polled(instance, cmd)) {
3161 * the following function will get the instance PD LIST.
3168 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) {
3170 memset(instance->pd_list, 0,
3171 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
3173 for (pd_index = 0; pd_index < ci->count; pd_index++) {
3175 instance->pd_list[pd_addr->deviceId].tid =
3177 instance->pd_list[pd_addr->deviceId].driveType =
3178 pd_addr->scsiDevType;
3179 instance->pd_list[pd_addr->deviceId].driveState =
3185 pci_free_consistent(instance->pdev,
3186 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
3188 megasas_return_cmd(instance, cmd);
3194 * megasas_get_ld_list_info - Returns FW's ld_list structure
3195 * @instance: Adapter soft state
3196 * @ld_list: ld_list structure
3198 * Issues an internal command (DCMD) to get the FW's controller PD
3199 * list structure. This information is mainly used to find out SYSTEM
3200 * supported by the FW.
3203 megasas_get_ld_list(struct megasas_instance *instance)
3205 int ret = 0, ld_index = 0, ids = 0;
3206 struct megasas_cmd *cmd;
3207 struct megasas_dcmd_frame *dcmd;
3208 struct MR_LD_LIST *ci;
3209 dma_addr_t ci_h = 0;
3211 cmd = megasas_get_cmd(instance);
3214 printk(KERN_DEBUG "megasas_get_ld_list: Failed to get cmd\n");
3218 dcmd = &cmd->frame->dcmd;
3220 ci = pci_alloc_consistent(instance->pdev,
3221 sizeof(struct MR_LD_LIST),
3225 printk(KERN_DEBUG "Failed to alloc mem in get_ld_list\n");
3226 megasas_return_cmd(instance, cmd);
3230 memset(ci, 0, sizeof(*ci));
3231 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3233 dcmd->cmd = MFI_CMD_DCMD;
3234 dcmd->cmd_status = 0xFF;
3235 dcmd->sge_count = 1;
3236 dcmd->flags = MFI_FRAME_DIR_READ;
3238 dcmd->data_xfer_len = sizeof(struct MR_LD_LIST);
3239 dcmd->opcode = MR_DCMD_LD_GET_LIST;
3240 dcmd->sgl.sge32[0].phys_addr = ci_h;
3241 dcmd->sgl.sge32[0].length = sizeof(struct MR_LD_LIST);
3244 if (!megasas_issue_polled(instance, cmd)) {
3250 /* the following function will get the instance PD LIST */
3252 if ((ret == 0) && (ci->ldCount <= MAX_LOGICAL_DRIVES)) {
3253 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
3255 for (ld_index = 0; ld_index < ci->ldCount; ld_index++) {
3256 if (ci->ldList[ld_index].state != 0) {
3257 ids = ci->ldList[ld_index].ref.targetId;
3258 instance->ld_ids[ids] =
3259 ci->ldList[ld_index].ref.targetId;
3264 pci_free_consistent(instance->pdev,
3265 sizeof(struct MR_LD_LIST),
3269 megasas_return_cmd(instance, cmd);
3274 * megasas_get_controller_info - Returns FW's controller structure
3275 * @instance: Adapter soft state
3276 * @ctrl_info: Controller information structure
3278 * Issues an internal command (DCMD) to get the FW's controller structure.
3279 * This information is mainly used to find out the maximum IO transfer per
3280 * command supported by the FW.
3283 megasas_get_ctrl_info(struct megasas_instance *instance,
3284 struct megasas_ctrl_info *ctrl_info)
3287 struct megasas_cmd *cmd;
3288 struct megasas_dcmd_frame *dcmd;
3289 struct megasas_ctrl_info *ci;
3290 dma_addr_t ci_h = 0;
3292 cmd = megasas_get_cmd(instance);
3295 printk(KERN_DEBUG "megasas: Failed to get a free cmd\n");
3299 dcmd = &cmd->frame->dcmd;
3301 ci = pci_alloc_consistent(instance->pdev,
3302 sizeof(struct megasas_ctrl_info), &ci_h);
3305 printk(KERN_DEBUG "Failed to alloc mem for ctrl info\n");
3306 megasas_return_cmd(instance, cmd);
3310 memset(ci, 0, sizeof(*ci));
3311 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3313 dcmd->cmd = MFI_CMD_DCMD;
3314 dcmd->cmd_status = 0xFF;
3315 dcmd->sge_count = 1;
3316 dcmd->flags = MFI_FRAME_DIR_READ;
3319 dcmd->data_xfer_len = sizeof(struct megasas_ctrl_info);
3320 dcmd->opcode = MR_DCMD_CTRL_GET_INFO;
3321 dcmd->sgl.sge32[0].phys_addr = ci_h;
3322 dcmd->sgl.sge32[0].length = sizeof(struct megasas_ctrl_info);
3324 if (!megasas_issue_polled(instance, cmd)) {
3326 memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info));
3331 pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info),
3334 megasas_return_cmd(instance, cmd);
3339 * megasas_issue_init_mfi - Initializes the FW
3340 * @instance: Adapter soft state
3342 * Issues the INIT MFI cmd
3345 megasas_issue_init_mfi(struct megasas_instance *instance)
3349 struct megasas_cmd *cmd;
3351 struct megasas_init_frame *init_frame;
3352 struct megasas_init_queue_info *initq_info;
3353 dma_addr_t init_frame_h;
3354 dma_addr_t initq_info_h;
3357 * Prepare a init frame. Note the init frame points to queue info
3358 * structure. Each frame has SGL allocated after first 64 bytes. For
3359 * this frame - since we don't need any SGL - we use SGL's space as
3360 * queue info structure
3362 * We will not get a NULL command below. We just created the pool.
3364 cmd = megasas_get_cmd(instance);
3366 init_frame = (struct megasas_init_frame *)cmd->frame;
3367 initq_info = (struct megasas_init_queue_info *)
3368 ((unsigned long)init_frame + 64);
3370 init_frame_h = cmd->frame_phys_addr;
3371 initq_info_h = init_frame_h + 64;
3373 context = init_frame->context;
3374 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
3375 memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
3376 init_frame->context = context;
3378 initq_info->reply_queue_entries = instance->max_fw_cmds + 1;
3379 initq_info->reply_queue_start_phys_addr_lo = instance->reply_queue_h;
3381 initq_info->producer_index_phys_addr_lo = instance->producer_h;
3382 initq_info->consumer_index_phys_addr_lo = instance->consumer_h;
3384 init_frame->cmd = MFI_CMD_INIT;
3385 init_frame->cmd_status = 0xFF;
3386 init_frame->queue_info_new_phys_addr_lo = initq_info_h;
3388 init_frame->data_xfer_len = sizeof(struct megasas_init_queue_info);
3391 * disable the intr before firing the init frame to FW
3393 instance->instancet->disable_intr(instance);
3396 * Issue the init frame in polled mode
3399 if (megasas_issue_polled(instance, cmd)) {
3400 printk(KERN_ERR "megasas: Failed to init firmware\n");
3401 megasas_return_cmd(instance, cmd);
3405 megasas_return_cmd(instance, cmd);
3414 megasas_init_adapter_mfi(struct megasas_instance *instance)
3416 struct megasas_register_set __iomem *reg_set;
3420 reg_set = instance->reg_set;
3423 * Get various operational parameters from status register
3425 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
3427 * Reduce the max supported cmds by 1. This is to ensure that the
3428 * reply_q_sz (1 more than the max cmd that driver may send)
3429 * does not exceed max cmds that the FW can support
3431 instance->max_fw_cmds = instance->max_fw_cmds-1;
3432 instance->max_mfi_cmds = instance->max_fw_cmds;
3433 instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >>
3436 * Create a pool of commands
3438 if (megasas_alloc_cmds(instance))
3439 goto fail_alloc_cmds;
3442 * Allocate memory for reply queue. Length of reply queue should
3443 * be _one_ more than the maximum commands handled by the firmware.
3445 * Note: When FW completes commands, it places corresponding contex
3446 * values in this circular reply queue. This circular queue is a fairly
3447 * typical producer-consumer queue. FW is the producer (of completed
3448 * commands) and the driver is the consumer.
3450 context_sz = sizeof(u32);
3451 reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
3453 instance->reply_queue = pci_alloc_consistent(instance->pdev,
3455 &instance->reply_queue_h);
3457 if (!instance->reply_queue) {
3458 printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n");
3459 goto fail_reply_queue;
3462 if (megasas_issue_init_mfi(instance))
3465 instance->fw_support_ieee = 0;
3466 instance->fw_support_ieee =
3467 (instance->instancet->read_fw_status_reg(reg_set) &
3470 printk(KERN_NOTICE "megasas_init_mfi: fw_support_ieee=%d",
3471 instance->fw_support_ieee);
3473 if (instance->fw_support_ieee)
3474 instance->flag_ieee = 1;
3480 pci_free_consistent(instance->pdev, reply_q_sz,
3481 instance->reply_queue, instance->reply_queue_h);
3483 megasas_free_cmds(instance);
3490 * megasas_init_fw - Initializes the FW
3491 * @instance: Adapter soft state
3493 * This is the main function for initializing firmware
3496 static int megasas_init_fw(struct megasas_instance *instance)
3500 u32 tmp_sectors, msix_enable, scratch_pad_2;
3501 struct megasas_register_set __iomem *reg_set;
3502 struct megasas_ctrl_info *ctrl_info;
3503 unsigned long bar_list;
3504 int i, loop, fw_msix_count = 0;
3506 /* Find first memory bar */
3507 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
3508 instance->bar = find_first_bit(&bar_list, sizeof(unsigned long));
3509 instance->base_addr = pci_resource_start(instance->pdev, instance->bar);
3510 if (pci_request_selected_regions(instance->pdev, instance->bar,
3512 printk(KERN_DEBUG "megasas: IO memory region busy!\n");
3516 instance->reg_set = ioremap_nocache(instance->base_addr, 8192);
3518 if (!instance->reg_set) {
3519 printk(KERN_DEBUG "megasas: Failed to map IO mem\n");
3523 reg_set = instance->reg_set;
3525 switch (instance->pdev->device) {
3526 case PCI_DEVICE_ID_LSI_FUSION:
3527 case PCI_DEVICE_ID_LSI_INVADER:
3528 case PCI_DEVICE_ID_LSI_FURY:
3529 instance->instancet = &megasas_instance_template_fusion;
3531 case PCI_DEVICE_ID_LSI_SAS1078R:
3532 case PCI_DEVICE_ID_LSI_SAS1078DE:
3533 instance->instancet = &megasas_instance_template_ppc;
3535 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
3536 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
3537 instance->instancet = &megasas_instance_template_gen2;
3539 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
3540 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
3541 instance->instancet = &megasas_instance_template_skinny;
3543 case PCI_DEVICE_ID_LSI_SAS1064R:
3544 case PCI_DEVICE_ID_DELL_PERC5:
3546 instance->instancet = &megasas_instance_template_xscale;
3550 if (megasas_transition_to_ready(instance, 0)) {
3551 atomic_set(&instance->fw_reset_no_pci_access, 1);
3552 instance->instancet->adp_reset
3553 (instance, instance->reg_set);
3554 atomic_set(&instance->fw_reset_no_pci_access, 0);
3555 dev_info(&instance->pdev->dev,
3556 "megasas: FW restarted successfully from %s!\n",
3559 /*waitting for about 30 second before retry*/
3562 if (megasas_transition_to_ready(instance, 0))
3563 goto fail_ready_state;
3567 * MSI-X host index 0 is common for all adapter.
3568 * It is used for all MPT based Adapters.
3570 instance->reply_post_host_index_addr[0] =
3571 (u32 *)((u8 *)instance->reg_set +
3572 MPI2_REPLY_POST_HOST_INDEX_OFFSET);
3574 /* Check if MSI-X is supported while in ready state */
3575 msix_enable = (instance->instancet->read_fw_status_reg(reg_set) &
3577 if (msix_enable && !msix_disable) {
3578 scratch_pad_2 = readl
3579 (&instance->reg_set->outbound_scratch_pad_2);
3580 /* Check max MSI-X vectors */
3581 if (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) {
3582 instance->msix_vectors = (scratch_pad_2
3583 & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
3584 fw_msix_count = instance->msix_vectors;
3586 instance->msix_vectors =
3588 instance->msix_vectors);
3589 } else if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)
3590 || (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
3591 /* Invader/Fury supports more than 8 MSI-X */
3592 instance->msix_vectors = ((scratch_pad_2
3593 & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
3594 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
3595 fw_msix_count = instance->msix_vectors;
3596 /* Save 1-15 reply post index address to local memory
3597 * Index 0 is already saved from reg offset
3598 * MPI2_REPLY_POST_HOST_INDEX_OFFSET
3600 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
3601 instance->reply_post_host_index_addr[loop] =
3602 (u32 *)((u8 *)instance->reg_set +
3603 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
3607 instance->msix_vectors = min(msix_vectors,
3608 instance->msix_vectors);
3610 instance->msix_vectors = 1;
3611 /* Don't bother allocating more MSI-X vectors than cpus */
3612 instance->msix_vectors = min(instance->msix_vectors,
3613 (unsigned int)num_online_cpus());
3614 for (i = 0; i < instance->msix_vectors; i++)
3615 instance->msixentry[i].entry = i;
3616 i = pci_enable_msix(instance->pdev, instance->msixentry,
3617 instance->msix_vectors);
3620 if (!pci_enable_msix(instance->pdev,
3621 instance->msixentry, i))
3622 instance->msix_vectors = i;
3624 instance->msix_vectors = 0;
3627 instance->msix_vectors = 0;
3629 dev_info(&instance->pdev->dev, "[scsi%d]: FW supports"
3630 "<%d> MSIX vector,Online CPUs: <%d>,"
3631 "Current MSIX <%d>\n", instance->host->host_no,
3632 fw_msix_count, (unsigned int)num_online_cpus(),
3633 instance->msix_vectors);
3636 /* Get operational params, sge flags, send init cmd to controller */
3637 if (instance->instancet->init_adapter(instance))
3638 goto fail_init_adapter;
3640 printk(KERN_ERR "megasas: INIT adapter done\n");
3643 * the following function will get the PD LIST.
3646 memset(instance->pd_list, 0 ,
3647 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
3648 megasas_get_pd_list(instance);
3650 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
3651 megasas_get_ld_list(instance);
3653 ctrl_info = kmalloc(sizeof(struct megasas_ctrl_info), GFP_KERNEL);
3656 * Compute the max allowed sectors per IO: The controller info has two
3657 * limits on max sectors. Driver should use the minimum of these two.
3659 * 1 << stripe_sz_ops.min = max sectors per strip
3661 * Note that older firmwares ( < FW ver 30) didn't report information
3662 * to calculate max_sectors_1. So the number ended up as zero always.
3665 if (ctrl_info && !megasas_get_ctrl_info(instance, ctrl_info)) {
3667 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
3668 ctrl_info->max_strips_per_io;
3669 max_sectors_2 = ctrl_info->max_request_size;
3671 tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2);
3673 /*Check whether controller is iMR or MR */
3674 if (ctrl_info->memory_size) {
3675 instance->is_imr = 0;
3676 dev_info(&instance->pdev->dev, "Controller type: MR,"
3677 "Memory size is: %dMB\n",
3678 ctrl_info->memory_size);
3680 instance->is_imr = 1;
3681 dev_info(&instance->pdev->dev,
3682 "Controller type: iMR\n");
3684 instance->disableOnlineCtrlReset =
3685 ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset;
3686 instance->UnevenSpanSupport =
3687 ctrl_info->adapterOperations2.supportUnevenSpans;
3688 if (instance->UnevenSpanSupport) {
3689 struct fusion_context *fusion = instance->ctrl_context;
3690 dev_info(&instance->pdev->dev, "FW supports: "
3691 "UnevenSpanSupport=%x\n", instance->UnevenSpanSupport);
3692 if (MR_ValidateMapInfo(instance))
3693 fusion->fast_path_io = 1;
3695 fusion->fast_path_io = 0;
3700 instance->max_sectors_per_req = instance->max_num_sge *
3702 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
3703 instance->max_sectors_per_req = tmp_sectors;
3707 /* Check for valid throttlequeuedepth module parameter */
3708 if (instance->is_imr) {
3709 if (throttlequeuedepth > (instance->max_fw_cmds -
3710 MEGASAS_SKINNY_INT_CMDS))
3711 instance->throttlequeuedepth =
3712 MEGASAS_THROTTLE_QUEUE_DEPTH;
3714 instance->throttlequeuedepth = throttlequeuedepth;
3716 if (throttlequeuedepth > (instance->max_fw_cmds -
3718 instance->throttlequeuedepth =
3719 MEGASAS_THROTTLE_QUEUE_DEPTH;
3721 instance->throttlequeuedepth = throttlequeuedepth;
3725 * Setup tasklet for cmd completion
3728 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
3729 (unsigned long)instance);
3735 iounmap(instance->reg_set);
3738 pci_release_selected_regions(instance->pdev, instance->bar);
3744 * megasas_release_mfi - Reverses the FW initialization
3745 * @intance: Adapter soft state
3747 static void megasas_release_mfi(struct megasas_instance *instance)
3749 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
3751 if (instance->reply_queue)
3752 pci_free_consistent(instance->pdev, reply_q_sz,
3753 instance->reply_queue, instance->reply_queue_h);
3755 megasas_free_cmds(instance);
3757 iounmap(instance->reg_set);
3759 pci_release_selected_regions(instance->pdev, instance->bar);
3763 * megasas_get_seq_num - Gets latest event sequence numbers
3764 * @instance: Adapter soft state
3765 * @eli: FW event log sequence numbers information
3767 * FW maintains a log of all events in a non-volatile area. Upper layers would
3768 * usually find out the latest sequence number of the events, the seq number at
3769 * the boot etc. They would "read" all the events below the latest seq number
3770 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
3771 * number), they would subsribe to AEN (asynchronous event notification) and
3772 * wait for the events to happen.
3775 megasas_get_seq_num(struct megasas_instance *instance,
3776 struct megasas_evt_log_info *eli)
3778 struct megasas_cmd *cmd;
3779 struct megasas_dcmd_frame *dcmd;
3780 struct megasas_evt_log_info *el_info;
3781 dma_addr_t el_info_h = 0;
3783 cmd = megasas_get_cmd(instance);
3789 dcmd = &cmd->frame->dcmd;
3790 el_info = pci_alloc_consistent(instance->pdev,
3791 sizeof(struct megasas_evt_log_info),
3795 megasas_return_cmd(instance, cmd);
3799 memset(el_info, 0, sizeof(*el_info));
3800 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3802 dcmd->cmd = MFI_CMD_DCMD;
3803 dcmd->cmd_status = 0x0;
3804 dcmd->sge_count = 1;
3805 dcmd->flags = MFI_FRAME_DIR_READ;
3808 dcmd->data_xfer_len = sizeof(struct megasas_evt_log_info);
3809 dcmd->opcode = MR_DCMD_CTRL_EVENT_GET_INFO;
3810 dcmd->sgl.sge32[0].phys_addr = el_info_h;
3811 dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_log_info);
3813 megasas_issue_blocked_cmd(instance, cmd);
3816 * Copy the data back into callers buffer
3818 memcpy(eli, el_info, sizeof(struct megasas_evt_log_info));
3820 pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info),
3821 el_info, el_info_h);
3823 megasas_return_cmd(instance, cmd);
3829 * megasas_register_aen - Registers for asynchronous event notification
3830 * @instance: Adapter soft state
3831 * @seq_num: The starting sequence number
3832 * @class_locale: Class of the event
3834 * This function subscribes for AEN for events beyond the @seq_num. It requests
3835 * to be notified if and only if the event is of type @class_locale
3838 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
3839 u32 class_locale_word)
3842 struct megasas_cmd *cmd;
3843 struct megasas_dcmd_frame *dcmd;
3844 union megasas_evt_class_locale curr_aen;
3845 union megasas_evt_class_locale prev_aen;
3848 * If there an AEN pending already (aen_cmd), check if the
3849 * class_locale of that pending AEN is inclusive of the new
3850 * AEN request we currently have. If it is, then we don't have
3851 * to do anything. In other words, whichever events the current
3852 * AEN request is subscribing to, have already been subscribed
3855 * If the old_cmd is _not_ inclusive, then we have to abort
3856 * that command, form a class_locale that is superset of both
3857 * old and current and re-issue to the FW
3860 curr_aen.word = class_locale_word;
3862 if (instance->aen_cmd) {
3864 prev_aen.word = instance->aen_cmd->frame->dcmd.mbox.w[1];
3867 * A class whose enum value is smaller is inclusive of all
3868 * higher values. If a PROGRESS (= -1) was previously
3869 * registered, then a new registration requests for higher
3870 * classes need not be sent to FW. They are automatically
3873 * Locale numbers don't have such hierarchy. They are bitmap
3876 if ((prev_aen.members.class <= curr_aen.members.class) &&
3877 !((prev_aen.members.locale & curr_aen.members.locale) ^
3878 curr_aen.members.locale)) {
3880 * Previously issued event registration includes
3881 * current request. Nothing to do.
3885 curr_aen.members.locale |= prev_aen.members.locale;
3887 if (prev_aen.members.class < curr_aen.members.class)
3888 curr_aen.members.class = prev_aen.members.class;
3890 instance->aen_cmd->abort_aen = 1;
3891 ret_val = megasas_issue_blocked_abort_cmd(instance,
3896 printk(KERN_DEBUG "megasas: Failed to abort "
3897 "previous AEN command\n");
3903 cmd = megasas_get_cmd(instance);
3908 dcmd = &cmd->frame->dcmd;
3910 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
3913 * Prepare DCMD for aen registration
3915 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3917 dcmd->cmd = MFI_CMD_DCMD;
3918 dcmd->cmd_status = 0x0;
3919 dcmd->sge_count = 1;
3920 dcmd->flags = MFI_FRAME_DIR_READ;
3923 instance->last_seq_num = seq_num;
3924 dcmd->data_xfer_len = sizeof(struct megasas_evt_detail);
3925 dcmd->opcode = MR_DCMD_CTRL_EVENT_WAIT;
3926 dcmd->mbox.w[0] = seq_num;
3927 dcmd->mbox.w[1] = curr_aen.word;
3928 dcmd->sgl.sge32[0].phys_addr = (u32) instance->evt_detail_h;
3929 dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_detail);
3931 if (instance->aen_cmd != NULL) {
3932 megasas_return_cmd(instance, cmd);
3937 * Store reference to the cmd used to register for AEN. When an
3938 * application wants us to register for AEN, we have to abort this
3939 * cmd and re-register with a new EVENT LOCALE supplied by that app
3941 instance->aen_cmd = cmd;
3944 * Issue the aen registration frame
3946 instance->instancet->issue_dcmd(instance, cmd);
3952 * megasas_start_aen - Subscribes to AEN during driver load time
3953 * @instance: Adapter soft state
3955 static int megasas_start_aen(struct megasas_instance *instance)
3957 struct megasas_evt_log_info eli;
3958 union megasas_evt_class_locale class_locale;
3961 * Get the latest sequence number from FW
3963 memset(&eli, 0, sizeof(eli));
3965 if (megasas_get_seq_num(instance, &eli))
3969 * Register AEN with FW for latest sequence number plus 1
3971 class_locale.members.reserved = 0;
3972 class_locale.members.locale = MR_EVT_LOCALE_ALL;
3973 class_locale.members.class = MR_EVT_CLASS_DEBUG;
3975 return megasas_register_aen(instance, eli.newest_seq_num + 1,
3980 * megasas_io_attach - Attaches this driver to SCSI mid-layer
3981 * @instance: Adapter soft state
3983 static int megasas_io_attach(struct megasas_instance *instance)
3985 struct Scsi_Host *host = instance->host;
3988 * Export parameters required by SCSI mid-layer
3990 host->irq = instance->pdev->irq;
3991 host->unique_id = instance->unique_id;
3992 if (instance->is_imr) {
3994 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
3997 instance->max_fw_cmds - MEGASAS_INT_CMDS;
3998 host->this_id = instance->init_id;
3999 host->sg_tablesize = instance->max_num_sge;
4001 if (instance->fw_support_ieee)
4002 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
4005 * Check if the module parameter value for max_sectors can be used
4007 if (max_sectors && max_sectors < instance->max_sectors_per_req)
4008 instance->max_sectors_per_req = max_sectors;
4011 if (((instance->pdev->device ==
4012 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
4013 (instance->pdev->device ==
4014 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
4015 (max_sectors <= MEGASAS_MAX_SECTORS)) {
4016 instance->max_sectors_per_req = max_sectors;
4018 printk(KERN_INFO "megasas: max_sectors should be > 0"
4019 "and <= %d (or < 1MB for GEN2 controller)\n",
4020 instance->max_sectors_per_req);
4025 host->max_sectors = instance->max_sectors_per_req;
4026 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
4027 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
4028 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
4029 host->max_lun = MEGASAS_MAX_LUN;
4030 host->max_cmd_len = 16;
4032 /* Fusion only supports host reset */
4033 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
4034 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
4035 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
4036 host->hostt->eh_device_reset_handler = NULL;
4037 host->hostt->eh_bus_reset_handler = NULL;
4041 * Notify the mid-layer about the new controller
4043 if (scsi_add_host(host, &instance->pdev->dev)) {
4044 printk(KERN_DEBUG "megasas: scsi_add_host failed\n");
4049 * Trigger SCSI to scan our drives
4051 scsi_scan_host(host);
4056 megasas_set_dma_mask(struct pci_dev *pdev)
4059 * All our contollers are capable of performing 64-bit DMA
4062 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) {
4064 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
4065 goto fail_set_dma_mask;
4068 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
4069 goto fail_set_dma_mask;
4078 * megasas_probe_one - PCI hotplug entry point
4079 * @pdev: PCI device structure
4080 * @id: PCI ids of supported hotplugged adapter
4082 static int megasas_probe_one(struct pci_dev *pdev,
4083 const struct pci_device_id *id)
4085 int rval, pos, i, j;
4086 struct Scsi_Host *host;
4087 struct megasas_instance *instance;
4090 /* Reset MSI-X in the kdump kernel */
4091 if (reset_devices) {
4092 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
4094 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
4096 if (control & PCI_MSIX_FLAGS_ENABLE) {
4097 dev_info(&pdev->dev, "resetting MSI-X\n");
4098 pci_write_config_word(pdev,
4099 pos + PCI_MSIX_FLAGS,
4101 ~PCI_MSIX_FLAGS_ENABLE);
4107 * Announce PCI information
4109 printk(KERN_INFO "megasas: %#4.04x:%#4.04x:%#4.04x:%#4.04x: ",
4110 pdev->vendor, pdev->device, pdev->subsystem_vendor,
4111 pdev->subsystem_device);
4113 printk("bus %d:slot %d:func %d\n",
4114 pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));
4117 * PCI prepping: enable device set bus mastering and dma mask
4119 rval = pci_enable_device_mem(pdev);
4125 pci_set_master(pdev);
4127 if (megasas_set_dma_mask(pdev))
4128 goto fail_set_dma_mask;
4130 host = scsi_host_alloc(&megasas_template,
4131 sizeof(struct megasas_instance));
4134 printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n");
4135 goto fail_alloc_instance;
4138 instance = (struct megasas_instance *)host->hostdata;
4139 memset(instance, 0, sizeof(*instance));
4140 atomic_set( &instance->fw_reset_no_pci_access, 0 );
4141 instance->pdev = pdev;
4143 switch (instance->pdev->device) {
4144 case PCI_DEVICE_ID_LSI_FUSION:
4145 case PCI_DEVICE_ID_LSI_INVADER:
4146 case PCI_DEVICE_ID_LSI_FURY:
4148 struct fusion_context *fusion;
4150 instance->ctrl_context =
4151 kzalloc(sizeof(struct fusion_context), GFP_KERNEL);
4152 if (!instance->ctrl_context) {
4153 printk(KERN_DEBUG "megasas: Failed to allocate "
4154 "memory for Fusion context info\n");
4155 goto fail_alloc_dma_buf;
4157 fusion = instance->ctrl_context;
4158 INIT_LIST_HEAD(&fusion->cmd_pool);
4159 spin_lock_init(&fusion->cmd_pool_lock);
4162 default: /* For all other supported controllers */
4164 instance->producer =
4165 pci_alloc_consistent(pdev, sizeof(u32),
4166 &instance->producer_h);
4167 instance->consumer =
4168 pci_alloc_consistent(pdev, sizeof(u32),
4169 &instance->consumer_h);
4171 if (!instance->producer || !instance->consumer) {
4172 printk(KERN_DEBUG "megasas: Failed to allocate"
4173 "memory for producer, consumer\n");
4174 goto fail_alloc_dma_buf;
4177 *instance->producer = 0;
4178 *instance->consumer = 0;
4182 megasas_poll_wait_aen = 0;
4183 instance->flag_ieee = 0;
4184 instance->ev = NULL;
4185 instance->issuepend_done = 1;
4186 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
4187 instance->is_imr = 0;
4188 megasas_poll_wait_aen = 0;
4190 instance->evt_detail = pci_alloc_consistent(pdev,
4192 megasas_evt_detail),
4193 &instance->evt_detail_h);
4195 if (!instance->evt_detail) {
4196 printk(KERN_DEBUG "megasas: Failed to allocate memory for "
4197 "event detail structure\n");
4198 goto fail_alloc_dma_buf;
4202 * Initialize locks and queues
4204 INIT_LIST_HEAD(&instance->cmd_pool);
4205 INIT_LIST_HEAD(&instance->internal_reset_pending_q);
4207 atomic_set(&instance->fw_outstanding,0);
4209 init_waitqueue_head(&instance->int_cmd_wait_q);
4210 init_waitqueue_head(&instance->abort_cmd_wait_q);
4212 spin_lock_init(&instance->cmd_pool_lock);
4213 spin_lock_init(&instance->hba_lock);
4214 spin_lock_init(&instance->completion_lock);
4216 mutex_init(&instance->aen_mutex);
4217 mutex_init(&instance->reset_mutex);
4220 * Initialize PCI related and misc parameters
4222 instance->host = host;
4223 instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
4224 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
4226 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4227 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
4228 instance->flag_ieee = 1;
4229 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
4231 sema_init(&instance->ioctl_sem, MEGASAS_INT_CMDS);
4233 megasas_dbg_lvl = 0;
4235 instance->unload = 1;
4236 instance->last_time = 0;
4237 instance->disableOnlineCtrlReset = 1;
4238 instance->UnevenSpanSupport = 0;
4240 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
4241 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
4242 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
4243 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
4245 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
4248 * Initialize MFI Firmware
4250 if (megasas_init_fw(instance))
4257 if (instance->msix_vectors) {
4258 for (i = 0 ; i < instance->msix_vectors; i++) {
4259 instance->irq_context[i].instance = instance;
4260 instance->irq_context[i].MSIxIndex = i;
4261 if (request_irq(instance->msixentry[i].vector,
4262 instance->instancet->service_isr, 0,
4264 &instance->irq_context[i])) {
4265 printk(KERN_DEBUG "megasas: Failed to "
4266 "register IRQ for vector %d.\n", i);
4267 for (j = 0 ; j < i ; j++)
4269 instance->msixentry[j].vector,
4270 &instance->irq_context[j]);
4271 /* Retry irq register for IO_APIC */
4272 instance->msix_vectors = 0;
4273 goto retry_irq_register;
4277 instance->irq_context[0].instance = instance;
4278 instance->irq_context[0].MSIxIndex = 0;
4279 if (request_irq(pdev->irq, instance->instancet->service_isr,
4280 IRQF_SHARED, "megasas",
4281 &instance->irq_context[0])) {
4282 printk(KERN_DEBUG "megasas: Failed to register IRQ\n");
4287 instance->instancet->enable_intr(instance);
4290 * Store instance in PCI softstate
4292 pci_set_drvdata(pdev, instance);
4295 * Add this controller to megasas_mgmt_info structure so that it
4296 * can be exported to management applications
4298 megasas_mgmt_info.count++;
4299 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
4300 megasas_mgmt_info.max_index++;
4303 * Register with SCSI mid-layer
4305 if (megasas_io_attach(instance))
4306 goto fail_io_attach;
4308 instance->unload = 0;
4311 * Initiate AEN (Asynchronous Event Notification)
4313 if (megasas_start_aen(instance)) {
4314 printk(KERN_DEBUG "megasas: start aen failed\n");
4315 goto fail_start_aen;
4322 megasas_mgmt_info.count--;
4323 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
4324 megasas_mgmt_info.max_index--;
4326 pci_set_drvdata(pdev, NULL);
4327 instance->instancet->disable_intr(instance);
4328 if (instance->msix_vectors)
4329 for (i = 0 ; i < instance->msix_vectors; i++)
4330 free_irq(instance->msixentry[i].vector,
4331 &instance->irq_context[i]);
4333 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4335 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
4336 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
4337 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
4338 megasas_release_fusion(instance);
4340 megasas_release_mfi(instance);
4342 if (instance->msix_vectors)
4343 pci_disable_msix(instance->pdev);
4345 if (instance->evt_detail)
4346 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
4347 instance->evt_detail,
4348 instance->evt_detail_h);
4350 if (instance->producer)
4351 pci_free_consistent(pdev, sizeof(u32), instance->producer,
4352 instance->producer_h);
4353 if (instance->consumer)
4354 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
4355 instance->consumer_h);
4356 scsi_host_put(host);
4358 fail_alloc_instance:
4360 pci_disable_device(pdev);
4366 * megasas_flush_cache - Requests FW to flush all its caches
4367 * @instance: Adapter soft state
4369 static void megasas_flush_cache(struct megasas_instance *instance)
4371 struct megasas_cmd *cmd;
4372 struct megasas_dcmd_frame *dcmd;
4374 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
4377 cmd = megasas_get_cmd(instance);
4382 dcmd = &cmd->frame->dcmd;
4384 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4386 dcmd->cmd = MFI_CMD_DCMD;
4387 dcmd->cmd_status = 0x0;
4388 dcmd->sge_count = 0;
4389 dcmd->flags = MFI_FRAME_DIR_NONE;
4392 dcmd->data_xfer_len = 0;
4393 dcmd->opcode = MR_DCMD_CTRL_CACHE_FLUSH;
4394 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
4396 megasas_issue_blocked_cmd(instance, cmd);
4398 megasas_return_cmd(instance, cmd);
4404 * megasas_shutdown_controller - Instructs FW to shutdown the controller
4405 * @instance: Adapter soft state
4406 * @opcode: Shutdown/Hibernate
4408 static void megasas_shutdown_controller(struct megasas_instance *instance,
4411 struct megasas_cmd *cmd;
4412 struct megasas_dcmd_frame *dcmd;
4414 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
4417 cmd = megasas_get_cmd(instance);
4422 if (instance->aen_cmd)
4423 megasas_issue_blocked_abort_cmd(instance, instance->aen_cmd);
4424 if (instance->map_update_cmd)
4425 megasas_issue_blocked_abort_cmd(instance,
4426 instance->map_update_cmd);
4427 dcmd = &cmd->frame->dcmd;
4429 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4431 dcmd->cmd = MFI_CMD_DCMD;
4432 dcmd->cmd_status = 0x0;
4433 dcmd->sge_count = 0;
4434 dcmd->flags = MFI_FRAME_DIR_NONE;
4437 dcmd->data_xfer_len = 0;
4438 dcmd->opcode = opcode;
4440 megasas_issue_blocked_cmd(instance, cmd);
4442 megasas_return_cmd(instance, cmd);
4449 * megasas_suspend - driver suspend entry point
4450 * @pdev: PCI device structure
4451 * @state: PCI power state to suspend routine
4454 megasas_suspend(struct pci_dev *pdev, pm_message_t state)
4456 struct Scsi_Host *host;
4457 struct megasas_instance *instance;
4460 instance = pci_get_drvdata(pdev);
4461 host = instance->host;
4462 instance->unload = 1;
4464 megasas_flush_cache(instance);
4465 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
4467 /* cancel the delayed work if this work still in queue */
4468 if (instance->ev != NULL) {
4469 struct megasas_aen_event *ev = instance->ev;
4470 cancel_delayed_work_sync(&ev->hotplug_work);
4471 instance->ev = NULL;
4474 tasklet_kill(&instance->isr_tasklet);
4476 pci_set_drvdata(instance->pdev, instance);
4477 instance->instancet->disable_intr(instance);
4479 if (instance->msix_vectors)
4480 for (i = 0 ; i < instance->msix_vectors; i++)
4481 free_irq(instance->msixentry[i].vector,
4482 &instance->irq_context[i]);
4484 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4485 if (instance->msix_vectors)
4486 pci_disable_msix(instance->pdev);
4488 pci_save_state(pdev);
4489 pci_disable_device(pdev);
4491 pci_set_power_state(pdev, pci_choose_state(pdev, state));
4497 * megasas_resume- driver resume entry point
4498 * @pdev: PCI device structure
4501 megasas_resume(struct pci_dev *pdev)
4504 struct Scsi_Host *host;
4505 struct megasas_instance *instance;
4507 instance = pci_get_drvdata(pdev);
4508 host = instance->host;
4509 pci_set_power_state(pdev, PCI_D0);
4510 pci_enable_wake(pdev, PCI_D0, 0);
4511 pci_restore_state(pdev);
4514 * PCI prepping: enable device set bus mastering and dma mask
4516 rval = pci_enable_device_mem(pdev);
4519 printk(KERN_ERR "megasas: Enable device failed\n");
4523 pci_set_master(pdev);
4525 if (megasas_set_dma_mask(pdev))
4526 goto fail_set_dma_mask;
4529 * Initialize MFI Firmware
4532 atomic_set(&instance->fw_outstanding, 0);
4535 * We expect the FW state to be READY
4537 if (megasas_transition_to_ready(instance, 0))
4538 goto fail_ready_state;
4540 /* Now re-enable MSI-X */
4541 if (instance->msix_vectors)
4542 pci_enable_msix(instance->pdev, instance->msixentry,
4543 instance->msix_vectors);
4545 switch (instance->pdev->device) {
4546 case PCI_DEVICE_ID_LSI_FUSION:
4547 case PCI_DEVICE_ID_LSI_INVADER:
4548 case PCI_DEVICE_ID_LSI_FURY:
4550 megasas_reset_reply_desc(instance);
4551 if (megasas_ioc_init_fusion(instance)) {
4552 megasas_free_cmds(instance);
4553 megasas_free_cmds_fusion(instance);
4556 if (!megasas_get_map_info(instance))
4557 megasas_sync_map_info(instance);
4561 *instance->producer = 0;
4562 *instance->consumer = 0;
4563 if (megasas_issue_init_mfi(instance))
4568 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
4569 (unsigned long)instance);
4574 if (instance->msix_vectors) {
4575 for (i = 0 ; i < instance->msix_vectors; i++) {
4576 instance->irq_context[i].instance = instance;
4577 instance->irq_context[i].MSIxIndex = i;
4578 if (request_irq(instance->msixentry[i].vector,
4579 instance->instancet->service_isr, 0,
4581 &instance->irq_context[i])) {
4582 printk(KERN_DEBUG "megasas: Failed to "
4583 "register IRQ for vector %d.\n", i);
4584 for (j = 0 ; j < i ; j++)
4586 instance->msixentry[j].vector,
4587 &instance->irq_context[j]);
4592 instance->irq_context[0].instance = instance;
4593 instance->irq_context[0].MSIxIndex = 0;
4594 if (request_irq(pdev->irq, instance->instancet->service_isr,
4595 IRQF_SHARED, "megasas",
4596 &instance->irq_context[0])) {
4597 printk(KERN_DEBUG "megasas: Failed to register IRQ\n");
4602 instance->instancet->enable_intr(instance);
4603 instance->unload = 0;
4606 * Initiate AEN (Asynchronous Event Notification)
4608 if (megasas_start_aen(instance))
4609 printk(KERN_ERR "megasas: Start AEN failed\n");
4615 if (instance->evt_detail)
4616 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
4617 instance->evt_detail,
4618 instance->evt_detail_h);
4620 if (instance->producer)
4621 pci_free_consistent(pdev, sizeof(u32), instance->producer,
4622 instance->producer_h);
4623 if (instance->consumer)
4624 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
4625 instance->consumer_h);
4626 scsi_host_put(host);
4631 pci_disable_device(pdev);
4636 #define megasas_suspend NULL
4637 #define megasas_resume NULL
4641 * megasas_detach_one - PCI hot"un"plug entry point
4642 * @pdev: PCI device structure
4644 static void megasas_detach_one(struct pci_dev *pdev)
4647 struct Scsi_Host *host;
4648 struct megasas_instance *instance;
4649 struct fusion_context *fusion;
4651 instance = pci_get_drvdata(pdev);
4652 instance->unload = 1;
4653 host = instance->host;
4654 fusion = instance->ctrl_context;
4656 scsi_remove_host(instance->host);
4657 megasas_flush_cache(instance);
4658 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
4660 /* cancel the delayed work if this work still in queue*/
4661 if (instance->ev != NULL) {
4662 struct megasas_aen_event *ev = instance->ev;
4663 cancel_delayed_work_sync(&ev->hotplug_work);
4664 instance->ev = NULL;
4667 tasklet_kill(&instance->isr_tasklet);
4670 * Take the instance off the instance array. Note that we will not
4671 * decrement the max_index. We let this array be sparse array
4673 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
4674 if (megasas_mgmt_info.instance[i] == instance) {
4675 megasas_mgmt_info.count--;
4676 megasas_mgmt_info.instance[i] = NULL;
4682 pci_set_drvdata(instance->pdev, NULL);
4684 instance->instancet->disable_intr(instance);
4686 if (instance->msix_vectors)
4687 for (i = 0 ; i < instance->msix_vectors; i++)
4688 free_irq(instance->msixentry[i].vector,
4689 &instance->irq_context[i]);
4691 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4692 if (instance->msix_vectors)
4693 pci_disable_msix(instance->pdev);
4695 switch (instance->pdev->device) {
4696 case PCI_DEVICE_ID_LSI_FUSION:
4697 case PCI_DEVICE_ID_LSI_INVADER:
4698 case PCI_DEVICE_ID_LSI_FURY:
4699 megasas_release_fusion(instance);
4700 for (i = 0; i < 2 ; i++)
4701 if (fusion->ld_map[i])
4702 dma_free_coherent(&instance->pdev->dev,
4707 kfree(instance->ctrl_context);
4710 megasas_release_mfi(instance);
4711 pci_free_consistent(pdev, sizeof(u32),
4713 instance->producer_h);
4714 pci_free_consistent(pdev, sizeof(u32),
4716 instance->consumer_h);
4720 if (instance->evt_detail)
4721 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
4722 instance->evt_detail, instance->evt_detail_h);
4723 scsi_host_put(host);
4725 pci_set_drvdata(pdev, NULL);
4727 pci_disable_device(pdev);
4733 * megasas_shutdown - Shutdown entry point
4734 * @device: Generic device structure
4736 static void megasas_shutdown(struct pci_dev *pdev)
4739 struct megasas_instance *instance = pci_get_drvdata(pdev);
4741 instance->unload = 1;
4742 megasas_flush_cache(instance);
4743 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
4744 instance->instancet->disable_intr(instance);
4745 if (instance->msix_vectors)
4746 for (i = 0 ; i < instance->msix_vectors; i++)
4747 free_irq(instance->msixentry[i].vector,
4748 &instance->irq_context[i]);
4750 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4751 if (instance->msix_vectors)
4752 pci_disable_msix(instance->pdev);
4756 * megasas_mgmt_open - char node "open" entry point
4758 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
4761 * Allow only those users with admin rights
4763 if (!capable(CAP_SYS_ADMIN))
4770 * megasas_mgmt_fasync - Async notifier registration from applications
4772 * This function adds the calling process to a driver global queue. When an
4773 * event occurs, SIGIO will be sent to all processes in this queue.
4775 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
4779 mutex_lock(&megasas_async_queue_mutex);
4781 rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
4783 mutex_unlock(&megasas_async_queue_mutex);
4786 /* For sanity check when we get ioctl */
4787 filep->private_data = filep;
4791 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
4797 * megasas_mgmt_poll - char node "poll" entry point
4799 static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait)
4802 unsigned long flags;
4803 poll_wait(file, &megasas_poll_wait, wait);
4804 spin_lock_irqsave(&poll_aen_lock, flags);
4805 if (megasas_poll_wait_aen)
4806 mask = (POLLIN | POLLRDNORM);
4809 spin_unlock_irqrestore(&poll_aen_lock, flags);
4814 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
4815 * @instance: Adapter soft state
4816 * @argp: User's ioctl packet
4819 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
4820 struct megasas_iocpacket __user * user_ioc,
4821 struct megasas_iocpacket *ioc)
4823 struct megasas_sge32 *kern_sge32;
4824 struct megasas_cmd *cmd;
4825 void *kbuff_arr[MAX_IOCTL_SGE];
4826 dma_addr_t buf_handle = 0;
4829 dma_addr_t sense_handle;
4830 unsigned long *sense_ptr;
4832 memset(kbuff_arr, 0, sizeof(kbuff_arr));
4834 if (ioc->sge_count > MAX_IOCTL_SGE) {
4835 printk(KERN_DEBUG "megasas: SGE count [%d] > max limit [%d]\n",
4836 ioc->sge_count, MAX_IOCTL_SGE);
4840 cmd = megasas_get_cmd(instance);
4842 printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n");
4847 * User's IOCTL packet has 2 frames (maximum). Copy those two
4848 * frames into our cmd's frames. cmd->frame's context will get
4849 * overwritten when we copy from user's frames. So set that value
4852 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
4853 cmd->frame->hdr.context = cmd->index;
4854 cmd->frame->hdr.pad_0 = 0;
4855 cmd->frame->hdr.flags &= ~(MFI_FRAME_IEEE | MFI_FRAME_SGL64 |
4859 * The management interface between applications and the fw uses
4860 * MFI frames. E.g, RAID configuration changes, LD property changes
4861 * etc are accomplishes through different kinds of MFI frames. The
4862 * driver needs to care only about substituting user buffers with
4863 * kernel buffers in SGLs. The location of SGL is embedded in the
4864 * struct iocpacket itself.
4866 kern_sge32 = (struct megasas_sge32 *)
4867 ((unsigned long)cmd->frame + ioc->sgl_off);
4870 * For each user buffer, create a mirror buffer and copy in
4872 for (i = 0; i < ioc->sge_count; i++) {
4873 if (!ioc->sgl[i].iov_len)
4876 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
4877 ioc->sgl[i].iov_len,
4878 &buf_handle, GFP_KERNEL);
4879 if (!kbuff_arr[i]) {
4880 printk(KERN_DEBUG "megasas: Failed to alloc "
4881 "kernel SGL buffer for IOCTL \n");
4887 * We don't change the dma_coherent_mask, so
4888 * pci_alloc_consistent only returns 32bit addresses
4890 kern_sge32[i].phys_addr = (u32) buf_handle;
4891 kern_sge32[i].length = ioc->sgl[i].iov_len;
4894 * We created a kernel buffer corresponding to the
4895 * user buffer. Now copy in from the user buffer
4897 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
4898 (u32) (ioc->sgl[i].iov_len))) {
4904 if (ioc->sense_len) {
4905 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
4906 &sense_handle, GFP_KERNEL);
4913 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
4914 *sense_ptr = sense_handle;
4918 * Set the sync_cmd flag so that the ISR knows not to complete this
4919 * cmd to the SCSI mid-layer
4922 megasas_issue_blocked_cmd(instance, cmd);
4926 * copy out the kernel buffers to user buffers
4928 for (i = 0; i < ioc->sge_count; i++) {
4929 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
4930 ioc->sgl[i].iov_len)) {
4937 * copy out the sense
4939 if (ioc->sense_len) {
4941 * sense_ptr points to the location that has the user
4942 * sense buffer address
4944 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
4947 if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)),
4948 sense, ioc->sense_len)) {
4949 printk(KERN_ERR "megasas: Failed to copy out to user "
4957 * copy the status codes returned by the fw
4959 if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
4960 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
4961 printk(KERN_DEBUG "megasas: Error copying out cmd_status\n");
4967 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
4968 sense, sense_handle);
4971 for (i = 0; i < ioc->sge_count; i++) {
4973 dma_free_coherent(&instance->pdev->dev,
4974 kern_sge32[i].length,
4976 kern_sge32[i].phys_addr);
4979 megasas_return_cmd(instance, cmd);
4983 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
4985 struct megasas_iocpacket __user *user_ioc =
4986 (struct megasas_iocpacket __user *)arg;
4987 struct megasas_iocpacket *ioc;
4988 struct megasas_instance *instance;
4991 unsigned long flags;
4992 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
4994 ioc = kmalloc(sizeof(*ioc), GFP_KERNEL);
4998 if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) {
5003 instance = megasas_lookup_instance(ioc->host_no);
5009 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
5010 printk(KERN_ERR "Controller in crit error\n");
5015 if (instance->unload == 1) {
5021 * We will allow only MEGASAS_INT_CMDS number of parallel ioctl cmds
5023 if (down_interruptible(&instance->ioctl_sem)) {
5024 error = -ERESTARTSYS;
5028 for (i = 0; i < wait_time; i++) {
5030 spin_lock_irqsave(&instance->hba_lock, flags);
5031 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
5032 spin_unlock_irqrestore(&instance->hba_lock, flags);
5035 spin_unlock_irqrestore(&instance->hba_lock, flags);
5037 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
5038 printk(KERN_NOTICE "megasas: waiting"
5039 "for controller reset to finish\n");
5045 spin_lock_irqsave(&instance->hba_lock, flags);
5046 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
5047 spin_unlock_irqrestore(&instance->hba_lock, flags);
5049 printk(KERN_ERR "megaraid_sas: timed out while"
5050 "waiting for HBA to recover\n");
5054 spin_unlock_irqrestore(&instance->hba_lock, flags);
5056 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
5058 up(&instance->ioctl_sem);
5065 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
5067 struct megasas_instance *instance;
5068 struct megasas_aen aen;
5071 unsigned long flags;
5072 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
5074 if (file->private_data != file) {
5075 printk(KERN_DEBUG "megasas: fasync_helper was not "
5080 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
5083 instance = megasas_lookup_instance(aen.host_no);
5088 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
5092 if (instance->unload == 1) {
5096 for (i = 0; i < wait_time; i++) {
5098 spin_lock_irqsave(&instance->hba_lock, flags);
5099 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
5100 spin_unlock_irqrestore(&instance->hba_lock,
5105 spin_unlock_irqrestore(&instance->hba_lock, flags);
5107 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
5108 printk(KERN_NOTICE "megasas: waiting for"
5109 "controller reset to finish\n");
5115 spin_lock_irqsave(&instance->hba_lock, flags);
5116 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
5117 spin_unlock_irqrestore(&instance->hba_lock, flags);
5118 printk(KERN_ERR "megaraid_sas: timed out while waiting"
5119 "for HBA to recover.\n");
5122 spin_unlock_irqrestore(&instance->hba_lock, flags);
5124 mutex_lock(&instance->aen_mutex);
5125 error = megasas_register_aen(instance, aen.seq_num,
5126 aen.class_locale_word);
5127 mutex_unlock(&instance->aen_mutex);
5132 * megasas_mgmt_ioctl - char node ioctl entry point
5135 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
5138 case MEGASAS_IOC_FIRMWARE:
5139 return megasas_mgmt_ioctl_fw(file, arg);
5141 case MEGASAS_IOC_GET_AEN:
5142 return megasas_mgmt_ioctl_aen(file, arg);
5148 #ifdef CONFIG_COMPAT
5149 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
5151 struct compat_megasas_iocpacket __user *cioc =
5152 (struct compat_megasas_iocpacket __user *)arg;
5153 struct megasas_iocpacket __user *ioc =
5154 compat_alloc_user_space(sizeof(struct megasas_iocpacket));
5159 if (clear_user(ioc, sizeof(*ioc)))
5162 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
5163 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
5164 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
5165 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
5166 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
5167 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
5171 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
5172 * sense_len is not null, so prepare the 64bit value under
5173 * the same condition.
5175 if (ioc->sense_len) {
5176 void __user **sense_ioc_ptr =
5177 (void __user **)(ioc->frame.raw + ioc->sense_off);
5178 compat_uptr_t *sense_cioc_ptr =
5179 (compat_uptr_t *)(cioc->frame.raw + cioc->sense_off);
5180 if (get_user(ptr, sense_cioc_ptr) ||
5181 put_user(compat_ptr(ptr), sense_ioc_ptr))
5185 for (i = 0; i < MAX_IOCTL_SGE; i++) {
5186 if (get_user(ptr, &cioc->sgl[i].iov_base) ||
5187 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
5188 copy_in_user(&ioc->sgl[i].iov_len,
5189 &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
5193 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);
5195 if (copy_in_user(&cioc->frame.hdr.cmd_status,
5196 &ioc->frame.hdr.cmd_status, sizeof(u8))) {
5197 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
5204 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
5208 case MEGASAS_IOC_FIRMWARE32:
5209 return megasas_mgmt_compat_ioctl_fw(file, arg);
5210 case MEGASAS_IOC_GET_AEN:
5211 return megasas_mgmt_ioctl_aen(file, arg);
5219 * File operations structure for management interface
5221 static const struct file_operations megasas_mgmt_fops = {
5222 .owner = THIS_MODULE,
5223 .open = megasas_mgmt_open,
5224 .fasync = megasas_mgmt_fasync,
5225 .unlocked_ioctl = megasas_mgmt_ioctl,
5226 .poll = megasas_mgmt_poll,
5227 #ifdef CONFIG_COMPAT
5228 .compat_ioctl = megasas_mgmt_compat_ioctl,
5230 .llseek = noop_llseek,
5234 * PCI hotplug support registration structure
5236 static struct pci_driver megasas_pci_driver = {
5238 .name = "megaraid_sas",
5239 .id_table = megasas_pci_table,
5240 .probe = megasas_probe_one,
5241 .remove = megasas_detach_one,
5242 .suspend = megasas_suspend,
5243 .resume = megasas_resume,
5244 .shutdown = megasas_shutdown,
5248 * Sysfs driver attributes
5250 static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf)
5252 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
5256 static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL);
5259 megasas_sysfs_show_release_date(struct device_driver *dd, char *buf)
5261 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
5265 static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date,
5269 megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf)
5271 return sprintf(buf, "%u\n", support_poll_for_event);
5274 static DRIVER_ATTR(support_poll_for_event, S_IRUGO,
5275 megasas_sysfs_show_support_poll_for_event, NULL);
5278 megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf)
5280 return sprintf(buf, "%u\n", support_device_change);
5283 static DRIVER_ATTR(support_device_change, S_IRUGO,
5284 megasas_sysfs_show_support_device_change, NULL);
5287 megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf)
5289 return sprintf(buf, "%u\n", megasas_dbg_lvl);
5293 megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count)
5296 if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){
5297 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
5303 static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl,
5304 megasas_sysfs_set_dbg_lvl);
5307 megasas_aen_polling(struct work_struct *work)
5309 struct megasas_aen_event *ev =
5310 container_of(work, struct megasas_aen_event, hotplug_work.work);
5311 struct megasas_instance *instance = ev->instance;
5312 union megasas_evt_class_locale class_locale;
5313 struct Scsi_Host *host;
5314 struct scsi_device *sdev1;
5317 int i, j, doscan = 0;
5322 printk(KERN_ERR "invalid instance!\n");
5326 instance->ev = NULL;
5327 host = instance->host;
5328 if (instance->evt_detail) {
5330 switch (instance->evt_detail->code) {
5331 case MR_EVT_PD_INSERTED:
5332 if (megasas_get_pd_list(instance) == 0) {
5333 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
5335 j < MEGASAS_MAX_DEV_PER_CHANNEL;
5339 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5342 scsi_device_lookup(host, i, j, 0);
5344 if (instance->pd_list[pd_index].driveState
5345 == MR_PD_STATE_SYSTEM) {
5347 scsi_add_device(host, i, j, 0);
5351 scsi_device_put(sdev1);
5359 case MR_EVT_PD_REMOVED:
5360 if (megasas_get_pd_list(instance) == 0) {
5361 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
5363 j < MEGASAS_MAX_DEV_PER_CHANNEL;
5367 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5370 scsi_device_lookup(host, i, j, 0);
5372 if (instance->pd_list[pd_index].driveState
5373 == MR_PD_STATE_SYSTEM) {
5375 scsi_device_put(sdev1);
5379 scsi_remove_device(sdev1);
5380 scsi_device_put(sdev1);
5389 case MR_EVT_LD_OFFLINE:
5390 case MR_EVT_CFG_CLEARED:
5391 case MR_EVT_LD_DELETED:
5392 megasas_get_ld_list(instance);
5393 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
5395 j < MEGASAS_MAX_DEV_PER_CHANNEL;
5399 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5401 sdev1 = scsi_device_lookup(host,
5402 i + MEGASAS_MAX_LD_CHANNELS,
5406 if (instance->ld_ids[ld_index] != 0xff) {
5408 scsi_device_put(sdev1);
5412 scsi_remove_device(sdev1);
5413 scsi_device_put(sdev1);
5420 case MR_EVT_LD_CREATED:
5421 megasas_get_ld_list(instance);
5422 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
5424 j < MEGASAS_MAX_DEV_PER_CHANNEL;
5427 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5429 sdev1 = scsi_device_lookup(host,
5430 i+MEGASAS_MAX_LD_CHANNELS,
5433 if (instance->ld_ids[ld_index] !=
5436 scsi_add_device(host,
5442 scsi_device_put(sdev1);
5448 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
5449 case MR_EVT_FOREIGN_CFG_IMPORTED:
5450 case MR_EVT_LD_STATE_CHANGE:
5458 printk(KERN_ERR "invalid evt_detail!\n");
5464 printk(KERN_INFO "scanning ...\n");
5465 megasas_get_pd_list(instance);
5466 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
5467 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
5468 pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j;
5469 sdev1 = scsi_device_lookup(host, i, j, 0);
5470 if (instance->pd_list[pd_index].driveState ==
5471 MR_PD_STATE_SYSTEM) {
5473 scsi_add_device(host, i, j, 0);
5476 scsi_device_put(sdev1);
5479 scsi_remove_device(sdev1);
5480 scsi_device_put(sdev1);
5486 megasas_get_ld_list(instance);
5487 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
5488 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
5490 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5492 sdev1 = scsi_device_lookup(host,
5493 i+MEGASAS_MAX_LD_CHANNELS, j, 0);
5494 if (instance->ld_ids[ld_index] != 0xff) {
5496 scsi_add_device(host,
5500 scsi_device_put(sdev1);
5504 scsi_remove_device(sdev1);
5505 scsi_device_put(sdev1);
5512 if ( instance->aen_cmd != NULL ) {
5517 seq_num = instance->evt_detail->seq_num + 1;
5519 /* Register AEN with FW for latest sequence number plus 1 */
5520 class_locale.members.reserved = 0;
5521 class_locale.members.locale = MR_EVT_LOCALE_ALL;
5522 class_locale.members.class = MR_EVT_CLASS_DEBUG;
5523 mutex_lock(&instance->aen_mutex);
5524 error = megasas_register_aen(instance, seq_num,
5526 mutex_unlock(&instance->aen_mutex);
5529 printk(KERN_ERR "register aen failed error %x\n", error);
5535 * megasas_init - Driver load entry point
5537 static int __init megasas_init(void)
5542 * Announce driver version and other information
5544 printk(KERN_INFO "megasas: %s %s\n", MEGASAS_VERSION,
5545 MEGASAS_EXT_VERSION);
5547 spin_lock_init(&poll_aen_lock);
5549 support_poll_for_event = 2;
5550 support_device_change = 1;
5552 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
5555 * Register character device node
5557 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
5560 printk(KERN_DEBUG "megasas: failed to open device node\n");
5564 megasas_mgmt_majorno = rval;
5567 * Register ourselves as PCI hotplug module
5569 rval = pci_register_driver(&megasas_pci_driver);
5572 printk(KERN_DEBUG "megasas: PCI hotplug regisration failed \n");
5576 rval = driver_create_file(&megasas_pci_driver.driver,
5577 &driver_attr_version);
5579 goto err_dcf_attr_ver;
5580 rval = driver_create_file(&megasas_pci_driver.driver,
5581 &driver_attr_release_date);
5583 goto err_dcf_rel_date;
5585 rval = driver_create_file(&megasas_pci_driver.driver,
5586 &driver_attr_support_poll_for_event);
5588 goto err_dcf_support_poll_for_event;
5590 rval = driver_create_file(&megasas_pci_driver.driver,
5591 &driver_attr_dbg_lvl);
5593 goto err_dcf_dbg_lvl;
5594 rval = driver_create_file(&megasas_pci_driver.driver,
5595 &driver_attr_support_device_change);
5597 goto err_dcf_support_device_change;
5601 err_dcf_support_device_change:
5602 driver_remove_file(&megasas_pci_driver.driver,
5603 &driver_attr_dbg_lvl);
5605 driver_remove_file(&megasas_pci_driver.driver,
5606 &driver_attr_support_poll_for_event);
5608 err_dcf_support_poll_for_event:
5609 driver_remove_file(&megasas_pci_driver.driver,
5610 &driver_attr_release_date);
5613 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
5615 pci_unregister_driver(&megasas_pci_driver);
5617 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
5622 * megasas_exit - Driver unload entry point
5624 static void __exit megasas_exit(void)
5626 driver_remove_file(&megasas_pci_driver.driver,
5627 &driver_attr_dbg_lvl);
5628 driver_remove_file(&megasas_pci_driver.driver,
5629 &driver_attr_support_poll_for_event);
5630 driver_remove_file(&megasas_pci_driver.driver,
5631 &driver_attr_support_device_change);
5632 driver_remove_file(&megasas_pci_driver.driver,
5633 &driver_attr_release_date);
5634 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
5636 pci_unregister_driver(&megasas_pci_driver);
5637 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
5640 module_init(megasas_init);
5641 module_exit(megasas_exit);