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 : 06.700.06.00-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_ld_list_query(struct megasas_instance *instance,
97 static int megasas_issue_init_mfi(struct megasas_instance *instance);
98 static int megasas_register_aen(struct megasas_instance *instance,
99 u32 seq_num, u32 class_locale_word);
101 * PCI ID table for all supported controllers
103 static struct pci_device_id megasas_pci_table[] = {
105 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
107 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
109 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
111 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
113 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
115 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
117 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
119 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
120 /* xscale IOP, vega */
121 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
123 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
125 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
127 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
132 MODULE_DEVICE_TABLE(pci, megasas_pci_table);
134 static int megasas_mgmt_majorno;
135 static struct megasas_mgmt_info megasas_mgmt_info;
136 static struct fasync_struct *megasas_async_queue;
137 static DEFINE_MUTEX(megasas_async_queue_mutex);
139 static int megasas_poll_wait_aen;
140 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
141 static u32 support_poll_for_event;
143 static u32 support_device_change;
145 /* define lock for aen poll */
146 spinlock_t poll_aen_lock;
149 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
152 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs);
154 megasas_adp_reset_gen2(struct megasas_instance *instance,
155 struct megasas_register_set __iomem *reg_set);
156 static irqreturn_t megasas_isr(int irq, void *devp);
158 megasas_init_adapter_mfi(struct megasas_instance *instance);
160 megasas_build_and_issue_cmd(struct megasas_instance *instance,
161 struct scsi_cmnd *scmd);
162 static void megasas_complete_cmd_dpc(unsigned long instance_addr);
164 megasas_release_fusion(struct megasas_instance *instance);
166 megasas_ioc_init_fusion(struct megasas_instance *instance);
168 megasas_free_cmds_fusion(struct megasas_instance *instance);
170 megasas_get_map_info(struct megasas_instance *instance);
172 megasas_sync_map_info(struct megasas_instance *instance);
174 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd);
175 void megasas_reset_reply_desc(struct megasas_instance *instance);
176 int megasas_reset_fusion(struct Scsi_Host *shost);
177 void megasas_fusion_ocr_wq(struct work_struct *work);
180 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
182 instance->instancet->fire_cmd(instance,
183 cmd->frame_phys_addr, 0, instance->reg_set);
187 * megasas_get_cmd - Get a command from the free pool
188 * @instance: Adapter soft state
190 * Returns a free command from the pool
192 struct megasas_cmd *megasas_get_cmd(struct megasas_instance
196 struct megasas_cmd *cmd = NULL;
198 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
200 if (!list_empty(&instance->cmd_pool)) {
201 cmd = list_entry((&instance->cmd_pool)->next,
202 struct megasas_cmd, list);
203 list_del_init(&cmd->list);
205 printk(KERN_ERR "megasas: Command pool empty!\n");
208 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
213 * megasas_return_cmd - Return a cmd to free command pool
214 * @instance: Adapter soft state
215 * @cmd: Command packet to be returned to free command pool
218 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
222 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
225 cmd->frame_count = 0;
226 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) &&
227 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) &&
228 (instance->pdev->device != PCI_DEVICE_ID_LSI_FURY) &&
230 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
231 list_add_tail(&cmd->list, &instance->cmd_pool);
233 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
238 * The following functions are defined for xscale
239 * (deviceid : 1064R, PERC5) controllers
243 * megasas_enable_intr_xscale - Enables interrupts
244 * @regs: MFI register set
247 megasas_enable_intr_xscale(struct megasas_instance *instance)
249 struct megasas_register_set __iomem *regs;
250 regs = instance->reg_set;
251 writel(0, &(regs)->outbound_intr_mask);
253 /* Dummy readl to force pci flush */
254 readl(®s->outbound_intr_mask);
258 * megasas_disable_intr_xscale -Disables interrupt
259 * @regs: MFI register set
262 megasas_disable_intr_xscale(struct megasas_instance *instance)
264 struct megasas_register_set __iomem *regs;
266 regs = instance->reg_set;
267 writel(mask, ®s->outbound_intr_mask);
268 /* Dummy readl to force pci flush */
269 readl(®s->outbound_intr_mask);
273 * megasas_read_fw_status_reg_xscale - returns the current FW status value
274 * @regs: MFI register set
277 megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs)
279 return readl(&(regs)->outbound_msg_0);
282 * megasas_clear_interrupt_xscale - Check & clear interrupt
283 * @regs: MFI register set
286 megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs)
291 * Check if it is our interrupt
293 status = readl(®s->outbound_intr_status);
295 if (status & MFI_OB_INTR_STATUS_MASK)
296 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
297 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
298 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
301 * Clear the interrupt by writing back the same value
304 writel(status, ®s->outbound_intr_status);
306 /* Dummy readl to force pci flush */
307 readl(®s->outbound_intr_status);
313 * megasas_fire_cmd_xscale - Sends command to the FW
314 * @frame_phys_addr : Physical address of cmd
315 * @frame_count : Number of frames for the command
316 * @regs : MFI register set
319 megasas_fire_cmd_xscale(struct megasas_instance *instance,
320 dma_addr_t frame_phys_addr,
322 struct megasas_register_set __iomem *regs)
325 spin_lock_irqsave(&instance->hba_lock, flags);
326 writel((frame_phys_addr >> 3)|(frame_count),
327 &(regs)->inbound_queue_port);
328 spin_unlock_irqrestore(&instance->hba_lock, flags);
332 * megasas_adp_reset_xscale - For controller reset
333 * @regs: MFI register set
336 megasas_adp_reset_xscale(struct megasas_instance *instance,
337 struct megasas_register_set __iomem *regs)
341 writel(MFI_ADP_RESET, ®s->inbound_doorbell);
343 for (i = 0; i < 3; i++)
344 msleep(1000); /* sleep for 3 secs */
346 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
347 printk(KERN_NOTICE "pcidata = %x\n", pcidata);
349 printk(KERN_NOTICE "mfi 1068 offset read=%x\n", pcidata);
351 pci_write_config_dword(instance->pdev,
352 MFI_1068_PCSR_OFFSET, pcidata);
354 for (i = 0; i < 2; i++)
355 msleep(1000); /* need to wait 2 secs again */
358 pci_read_config_dword(instance->pdev,
359 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
360 printk(KERN_NOTICE "1068 offset handshake read=%x\n", pcidata);
361 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
362 printk(KERN_NOTICE "1068 offset pcidt=%x\n", pcidata);
364 pci_write_config_dword(instance->pdev,
365 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
372 * megasas_check_reset_xscale - For controller reset check
373 * @regs: MFI register set
376 megasas_check_reset_xscale(struct megasas_instance *instance,
377 struct megasas_register_set __iomem *regs)
380 if ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) &&
381 (le32_to_cpu(*instance->consumer) ==
382 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(upper_32_bits(frame_phys_addr),
633 &(regs)->inbound_high_queue_port);
634 writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
635 &(regs)->inbound_low_queue_port);
636 spin_unlock_irqrestore(&instance->hba_lock, flags);
640 * megasas_check_reset_skinny - For controller reset check
641 * @regs: MFI register set
644 megasas_check_reset_skinny(struct megasas_instance *instance,
645 struct megasas_register_set __iomem *regs)
647 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL)
653 static struct megasas_instance_template megasas_instance_template_skinny = {
655 .fire_cmd = megasas_fire_cmd_skinny,
656 .enable_intr = megasas_enable_intr_skinny,
657 .disable_intr = megasas_disable_intr_skinny,
658 .clear_intr = megasas_clear_intr_skinny,
659 .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
660 .adp_reset = megasas_adp_reset_gen2,
661 .check_reset = megasas_check_reset_skinny,
662 .service_isr = megasas_isr,
663 .tasklet = megasas_complete_cmd_dpc,
664 .init_adapter = megasas_init_adapter_mfi,
665 .build_and_issue_cmd = megasas_build_and_issue_cmd,
666 .issue_dcmd = megasas_issue_dcmd,
671 * The following functions are defined for gen2 (deviceid : 0x78 0x79)
676 * megasas_enable_intr_gen2 - Enables interrupts
677 * @regs: MFI register set
680 megasas_enable_intr_gen2(struct megasas_instance *instance)
682 struct megasas_register_set __iomem *regs;
683 regs = instance->reg_set;
684 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
686 /* write ~0x00000005 (4 & 1) to the intr mask*/
687 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
689 /* Dummy readl to force pci flush */
690 readl(®s->outbound_intr_mask);
694 * megasas_disable_intr_gen2 - Disables interrupt
695 * @regs: MFI register set
698 megasas_disable_intr_gen2(struct megasas_instance *instance)
700 struct megasas_register_set __iomem *regs;
701 u32 mask = 0xFFFFFFFF;
702 regs = instance->reg_set;
703 writel(mask, ®s->outbound_intr_mask);
704 /* Dummy readl to force pci flush */
705 readl(®s->outbound_intr_mask);
709 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
710 * @regs: MFI register set
713 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs)
715 return readl(&(regs)->outbound_scratch_pad);
719 * megasas_clear_interrupt_gen2 - Check & clear interrupt
720 * @regs: MFI register set
723 megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs)
728 * Check if it is our interrupt
730 status = readl(®s->outbound_intr_status);
732 if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
733 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
735 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
736 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
740 * Clear the interrupt by writing back the same value
743 writel(status, ®s->outbound_doorbell_clear);
745 /* Dummy readl to force pci flush */
746 readl(®s->outbound_intr_status);
751 * megasas_fire_cmd_gen2 - Sends command to the FW
752 * @frame_phys_addr : Physical address of cmd
753 * @frame_count : Number of frames for the command
754 * @regs : MFI register set
757 megasas_fire_cmd_gen2(struct megasas_instance *instance,
758 dma_addr_t frame_phys_addr,
760 struct megasas_register_set __iomem *regs)
763 spin_lock_irqsave(&instance->hba_lock, flags);
764 writel((frame_phys_addr | (frame_count<<1))|1,
765 &(regs)->inbound_queue_port);
766 spin_unlock_irqrestore(&instance->hba_lock, flags);
770 * megasas_adp_reset_gen2 - For controller reset
771 * @regs: MFI register set
774 megasas_adp_reset_gen2(struct megasas_instance *instance,
775 struct megasas_register_set __iomem *reg_set)
779 u32 *seq_offset = ®_set->seq_offset;
780 u32 *hostdiag_offset = ®_set->host_diag;
782 if (instance->instancet == &megasas_instance_template_skinny) {
783 seq_offset = ®_set->fusion_seq_offset;
784 hostdiag_offset = ®_set->fusion_host_diag;
787 writel(0, seq_offset);
788 writel(4, seq_offset);
789 writel(0xb, seq_offset);
790 writel(2, seq_offset);
791 writel(7, seq_offset);
792 writel(0xd, seq_offset);
796 HostDiag = (u32)readl(hostdiag_offset);
798 while ( !( HostDiag & DIAG_WRITE_ENABLE) ) {
800 HostDiag = (u32)readl(hostdiag_offset);
801 printk(KERN_NOTICE "RESETGEN2: retry=%x, hostdiag=%x\n",
809 printk(KERN_NOTICE "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
811 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
815 HostDiag = (u32)readl(hostdiag_offset);
816 while ( ( HostDiag & DIAG_RESET_ADAPTER) ) {
818 HostDiag = (u32)readl(hostdiag_offset);
819 printk(KERN_NOTICE "RESET_GEN2: retry=%x, hostdiag=%x\n",
830 * megasas_check_reset_gen2 - For controller reset check
831 * @regs: MFI register set
834 megasas_check_reset_gen2(struct megasas_instance *instance,
835 struct megasas_register_set __iomem *regs)
837 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
844 static struct megasas_instance_template megasas_instance_template_gen2 = {
846 .fire_cmd = megasas_fire_cmd_gen2,
847 .enable_intr = megasas_enable_intr_gen2,
848 .disable_intr = megasas_disable_intr_gen2,
849 .clear_intr = megasas_clear_intr_gen2,
850 .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
851 .adp_reset = megasas_adp_reset_gen2,
852 .check_reset = megasas_check_reset_gen2,
853 .service_isr = megasas_isr,
854 .tasklet = megasas_complete_cmd_dpc,
855 .init_adapter = megasas_init_adapter_mfi,
856 .build_and_issue_cmd = megasas_build_and_issue_cmd,
857 .issue_dcmd = megasas_issue_dcmd,
861 * This is the end of set of functions & definitions
862 * specific to gen2 (deviceid : 0x78, 0x79) controllers
866 * Template added for TB (Fusion)
868 extern struct megasas_instance_template megasas_instance_template_fusion;
871 * megasas_issue_polled - Issues a polling command
872 * @instance: Adapter soft state
873 * @cmd: Command packet to be issued
875 * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
878 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
881 struct megasas_header *frame_hdr = &cmd->frame->hdr;
883 frame_hdr->cmd_status = MFI_CMD_STATUS_POLL_MODE;
884 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
887 * Issue the frame using inbound queue port
889 instance->instancet->issue_dcmd(instance, cmd);
892 * Wait for cmd_status to change
894 return wait_and_poll(instance, cmd);
898 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds
899 * @instance: Adapter soft state
900 * @cmd: Command to be issued
902 * This function waits on an event for the command to be returned from ISR.
903 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
904 * Used to issue ioctl commands.
907 megasas_issue_blocked_cmd(struct megasas_instance *instance,
908 struct megasas_cmd *cmd)
910 cmd->cmd_status = ENODATA;
912 instance->instancet->issue_dcmd(instance, cmd);
914 wait_event(instance->int_cmd_wait_q, cmd->cmd_status != ENODATA);
920 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd
921 * @instance: Adapter soft state
922 * @cmd_to_abort: Previously issued cmd to be aborted
924 * MFI firmware can abort previously issued AEN command (automatic event
925 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
926 * cmd and waits for return status.
927 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
930 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
931 struct megasas_cmd *cmd_to_abort)
933 struct megasas_cmd *cmd;
934 struct megasas_abort_frame *abort_fr;
936 cmd = megasas_get_cmd(instance);
941 abort_fr = &cmd->frame->abort;
944 * Prepare and issue the abort frame
946 abort_fr->cmd = MFI_CMD_ABORT;
947 abort_fr->cmd_status = 0xFF;
948 abort_fr->flags = cpu_to_le16(0);
949 abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
950 abort_fr->abort_mfi_phys_addr_lo =
951 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
952 abort_fr->abort_mfi_phys_addr_hi =
953 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
956 cmd->cmd_status = 0xFF;
958 instance->instancet->issue_dcmd(instance, cmd);
961 * Wait for this cmd to complete
963 wait_event(instance->abort_cmd_wait_q, cmd->cmd_status != 0xFF);
966 megasas_return_cmd(instance, cmd);
971 * megasas_make_sgl32 - Prepares 32-bit SGL
972 * @instance: Adapter soft state
973 * @scp: SCSI command from the mid-layer
974 * @mfi_sgl: SGL to be filled in
976 * If successful, this function returns the number of SG elements. Otherwise,
980 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
981 union megasas_sgl *mfi_sgl)
985 struct scatterlist *os_sgl;
987 sge_count = scsi_dma_map(scp);
988 BUG_ON(sge_count < 0);
991 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
992 mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
993 mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
1000 * megasas_make_sgl64 - Prepares 64-bit SGL
1001 * @instance: Adapter soft state
1002 * @scp: SCSI command from the mid-layer
1003 * @mfi_sgl: SGL to be filled in
1005 * If successful, this function returns the number of SG elements. Otherwise,
1009 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1010 union megasas_sgl *mfi_sgl)
1014 struct scatterlist *os_sgl;
1016 sge_count = scsi_dma_map(scp);
1017 BUG_ON(sge_count < 0);
1020 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1021 mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1022 mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
1029 * megasas_make_sgl_skinny - Prepares IEEE SGL
1030 * @instance: Adapter soft state
1031 * @scp: SCSI command from the mid-layer
1032 * @mfi_sgl: SGL to be filled in
1034 * If successful, this function returns the number of SG elements. Otherwise,
1038 megasas_make_sgl_skinny(struct megasas_instance *instance,
1039 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1043 struct scatterlist *os_sgl;
1045 sge_count = scsi_dma_map(scp);
1048 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1049 mfi_sgl->sge_skinny[i].length =
1050 cpu_to_le32(sg_dma_len(os_sgl));
1051 mfi_sgl->sge_skinny[i].phys_addr =
1052 cpu_to_le64(sg_dma_address(os_sgl));
1053 mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
1060 * megasas_get_frame_count - Computes the number of frames
1061 * @frame_type : type of frame- io or pthru frame
1062 * @sge_count : number of sg elements
1064 * Returns the number of frames required for numnber of sge's (sge_count)
1067 static u32 megasas_get_frame_count(struct megasas_instance *instance,
1068 u8 sge_count, u8 frame_type)
1075 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1076 sizeof(struct megasas_sge32);
1078 if (instance->flag_ieee) {
1079 sge_sz = sizeof(struct megasas_sge_skinny);
1083 * Main frame can contain 2 SGEs for 64-bit SGLs and
1084 * 3 SGEs for 32-bit SGLs for ldio &
1085 * 1 SGEs for 64-bit SGLs and
1086 * 2 SGEs for 32-bit SGLs for pthru frame
1088 if (unlikely(frame_type == PTHRU_FRAME)) {
1089 if (instance->flag_ieee == 1) {
1090 num_cnt = sge_count - 1;
1091 } else if (IS_DMA64)
1092 num_cnt = sge_count - 1;
1094 num_cnt = sge_count - 2;
1096 if (instance->flag_ieee == 1) {
1097 num_cnt = sge_count - 1;
1098 } else if (IS_DMA64)
1099 num_cnt = sge_count - 2;
1101 num_cnt = sge_count - 3;
1105 sge_bytes = sge_sz * num_cnt;
1107 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1108 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1113 if (frame_count > 7)
1119 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1120 * @instance: Adapter soft state
1121 * @scp: SCSI command
1122 * @cmd: Command to be prepared in
1124 * This function prepares CDB commands. These are typcially pass-through
1125 * commands to the devices.
1128 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1129 struct megasas_cmd *cmd)
1134 struct megasas_pthru_frame *pthru;
1136 is_logical = MEGASAS_IS_LOGICAL(scp);
1137 device_id = MEGASAS_DEV_INDEX(instance, scp);
1138 pthru = (struct megasas_pthru_frame *)cmd->frame;
1140 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1141 flags = MFI_FRAME_DIR_WRITE;
1142 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1143 flags = MFI_FRAME_DIR_READ;
1144 else if (scp->sc_data_direction == PCI_DMA_NONE)
1145 flags = MFI_FRAME_DIR_NONE;
1147 if (instance->flag_ieee == 1) {
1148 flags |= MFI_FRAME_IEEE;
1152 * Prepare the DCDB frame
1154 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1155 pthru->cmd_status = 0x0;
1156 pthru->scsi_status = 0x0;
1157 pthru->target_id = device_id;
1158 pthru->lun = scp->device->lun;
1159 pthru->cdb_len = scp->cmd_len;
1162 pthru->flags = cpu_to_le16(flags);
1163 pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
1165 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1168 * If the command is for the tape device, set the
1169 * pthru timeout to the os layer timeout value.
1171 if (scp->device->type == TYPE_TAPE) {
1172 if ((scp->request->timeout / HZ) > 0xFFFF)
1173 pthru->timeout = 0xFFFF;
1175 pthru->timeout = cpu_to_le16(scp->request->timeout / HZ);
1181 if (instance->flag_ieee == 1) {
1182 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1183 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1185 } else if (IS_DMA64) {
1186 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1187 pthru->sge_count = megasas_make_sgl64(instance, scp,
1190 pthru->sge_count = megasas_make_sgl32(instance, scp,
1193 if (pthru->sge_count > instance->max_num_sge) {
1194 printk(KERN_ERR "megasas: DCDB two many SGE NUM=%x\n",
1200 * Sense info specific
1202 pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1203 pthru->sense_buf_phys_addr_hi =
1204 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
1205 pthru->sense_buf_phys_addr_lo =
1206 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
1209 * Compute the total number of frames this command consumes. FW uses
1210 * this number to pull sufficient number of frames from host memory.
1212 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1215 return cmd->frame_count;
1219 * megasas_build_ldio - Prepares IOs to logical devices
1220 * @instance: Adapter soft state
1221 * @scp: SCSI command
1222 * @cmd: Command to be prepared
1224 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1227 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1228 struct megasas_cmd *cmd)
1231 u8 sc = scp->cmnd[0];
1233 struct megasas_io_frame *ldio;
1235 device_id = MEGASAS_DEV_INDEX(instance, scp);
1236 ldio = (struct megasas_io_frame *)cmd->frame;
1238 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1239 flags = MFI_FRAME_DIR_WRITE;
1240 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1241 flags = MFI_FRAME_DIR_READ;
1243 if (instance->flag_ieee == 1) {
1244 flags |= MFI_FRAME_IEEE;
1248 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1250 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1251 ldio->cmd_status = 0x0;
1252 ldio->scsi_status = 0x0;
1253 ldio->target_id = device_id;
1255 ldio->reserved_0 = 0;
1257 ldio->flags = cpu_to_le16(flags);
1258 ldio->start_lba_hi = 0;
1259 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1262 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1264 if (scp->cmd_len == 6) {
1265 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
1266 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
1267 ((u32) scp->cmnd[2] << 8) |
1268 (u32) scp->cmnd[3]);
1270 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
1274 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1276 else if (scp->cmd_len == 10) {
1277 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
1278 ((u32) scp->cmnd[7] << 8));
1279 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1280 ((u32) scp->cmnd[3] << 16) |
1281 ((u32) scp->cmnd[4] << 8) |
1282 (u32) scp->cmnd[5]);
1286 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1288 else if (scp->cmd_len == 12) {
1289 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1290 ((u32) scp->cmnd[7] << 16) |
1291 ((u32) scp->cmnd[8] << 8) |
1292 (u32) scp->cmnd[9]);
1294 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1295 ((u32) scp->cmnd[3] << 16) |
1296 ((u32) scp->cmnd[4] << 8) |
1297 (u32) scp->cmnd[5]);
1301 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1303 else if (scp->cmd_len == 16) {
1304 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
1305 ((u32) scp->cmnd[11] << 16) |
1306 ((u32) scp->cmnd[12] << 8) |
1307 (u32) scp->cmnd[13]);
1309 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1310 ((u32) scp->cmnd[7] << 16) |
1311 ((u32) scp->cmnd[8] << 8) |
1312 (u32) scp->cmnd[9]);
1314 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1315 ((u32) scp->cmnd[3] << 16) |
1316 ((u32) scp->cmnd[4] << 8) |
1317 (u32) scp->cmnd[5]);
1324 if (instance->flag_ieee) {
1325 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1326 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1328 } else if (IS_DMA64) {
1329 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1330 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1332 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1334 if (ldio->sge_count > instance->max_num_sge) {
1335 printk(KERN_ERR "megasas: build_ld_io: sge_count = %x\n",
1341 * Sense info specific
1343 ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1344 ldio->sense_buf_phys_addr_hi = 0;
1345 ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
1348 * Compute the total number of frames this command consumes. FW uses
1349 * this number to pull sufficient number of frames from host memory.
1351 cmd->frame_count = megasas_get_frame_count(instance,
1352 ldio->sge_count, IO_FRAME);
1354 return cmd->frame_count;
1358 * megasas_is_ldio - Checks if the cmd is for logical drive
1359 * @scmd: SCSI command
1361 * Called by megasas_queue_command to find out if the command to be queued
1362 * is a logical drive command
1364 inline int megasas_is_ldio(struct scsi_cmnd *cmd)
1366 if (!MEGASAS_IS_LOGICAL(cmd))
1368 switch (cmd->cmnd[0]) {
1384 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds
1386 * @instance: Adapter soft state
1389 megasas_dump_pending_frames(struct megasas_instance *instance)
1391 struct megasas_cmd *cmd;
1393 union megasas_sgl *mfi_sgl;
1394 struct megasas_io_frame *ldio;
1395 struct megasas_pthru_frame *pthru;
1397 u32 max_cmd = instance->max_fw_cmds;
1399 printk(KERN_ERR "\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1400 printk(KERN_ERR "megasas[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1402 printk(KERN_ERR "\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1404 printk(KERN_ERR "\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1406 printk(KERN_ERR "megasas[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1407 for (i = 0; i < max_cmd; i++) {
1408 cmd = instance->cmd_list[i];
1411 printk(KERN_ERR "megasas[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1412 if (megasas_is_ldio(cmd->scmd)){
1413 ldio = (struct megasas_io_frame *)cmd->frame;
1414 mfi_sgl = &ldio->sgl;
1415 sgcount = ldio->sge_count;
1416 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1417 " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1418 instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
1419 le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
1420 le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
1423 pthru = (struct megasas_pthru_frame *) cmd->frame;
1424 mfi_sgl = &pthru->sgl;
1425 sgcount = pthru->sge_count;
1426 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1427 "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1428 instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
1429 pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
1430 le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
1432 if(megasas_dbg_lvl & MEGASAS_DBG_LVL){
1433 for (n = 0; n < sgcount; n++){
1435 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%llx ",
1436 le32_to_cpu(mfi_sgl->sge64[n].length),
1437 le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
1439 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%x ",
1440 le32_to_cpu(mfi_sgl->sge32[n].length),
1441 le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
1444 printk(KERN_ERR "\n");
1446 printk(KERN_ERR "\nmegasas[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1447 for (i = 0; i < max_cmd; i++) {
1449 cmd = instance->cmd_list[i];
1451 if(cmd->sync_cmd == 1){
1452 printk(KERN_ERR "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1455 printk(KERN_ERR "megasas[%d]: Dumping Done.\n\n",instance->host->host_no);
1459 megasas_build_and_issue_cmd(struct megasas_instance *instance,
1460 struct scsi_cmnd *scmd)
1462 struct megasas_cmd *cmd;
1465 cmd = megasas_get_cmd(instance);
1467 return SCSI_MLQUEUE_HOST_BUSY;
1470 * Logical drive command
1472 if (megasas_is_ldio(scmd))
1473 frame_count = megasas_build_ldio(instance, scmd, cmd);
1475 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1478 goto out_return_cmd;
1481 scmd->SCp.ptr = (char *)cmd;
1484 * Issue the command to the FW
1486 atomic_inc(&instance->fw_outstanding);
1488 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1489 cmd->frame_count-1, instance->reg_set);
1493 megasas_return_cmd(instance, cmd);
1499 * megasas_queue_command - Queue entry point
1500 * @scmd: SCSI command to be queued
1501 * @done: Callback entry point
1504 megasas_queue_command_lck(struct scsi_cmnd *scmd, void (*done) (struct scsi_cmnd *))
1506 struct megasas_instance *instance;
1507 unsigned long flags;
1509 instance = (struct megasas_instance *)
1510 scmd->device->host->hostdata;
1512 if (instance->issuepend_done == 0)
1513 return SCSI_MLQUEUE_HOST_BUSY;
1515 spin_lock_irqsave(&instance->hba_lock, flags);
1517 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
1518 spin_unlock_irqrestore(&instance->hba_lock, flags);
1519 scmd->result = DID_ERROR << 16;
1524 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
1525 spin_unlock_irqrestore(&instance->hba_lock, flags);
1526 return SCSI_MLQUEUE_HOST_BUSY;
1529 spin_unlock_irqrestore(&instance->hba_lock, flags);
1531 scmd->scsi_done = done;
1534 if (MEGASAS_IS_LOGICAL(scmd) &&
1535 (scmd->device->id >= MEGASAS_MAX_LD || scmd->device->lun)) {
1536 scmd->result = DID_BAD_TARGET << 16;
1540 switch (scmd->cmnd[0]) {
1541 case SYNCHRONIZE_CACHE:
1543 * FW takes care of flush cache on its own
1544 * No need to send it down
1546 scmd->result = DID_OK << 16;
1552 if (instance->instancet->build_and_issue_cmd(instance, scmd)) {
1553 printk(KERN_ERR "megasas: Err returned from build_and_issue_cmd\n");
1554 return SCSI_MLQUEUE_HOST_BUSY;
1564 static DEF_SCSI_QCMD(megasas_queue_command)
1566 static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1570 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1572 if ((megasas_mgmt_info.instance[i]) &&
1573 (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1574 return megasas_mgmt_info.instance[i];
1580 static int megasas_slave_configure(struct scsi_device *sdev)
1583 struct megasas_instance *instance ;
1585 instance = megasas_lookup_instance(sdev->host->host_no);
1588 * Don't export physical disk devices to the disk driver.
1590 * FIXME: Currently we don't export them to the midlayer at all.
1591 * That will be fixed once LSI engineers have audited the
1592 * firmware for possible issues.
1594 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS &&
1595 sdev->type == TYPE_DISK) {
1596 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1598 if (instance->pd_list[pd_index].driveState ==
1599 MR_PD_STATE_SYSTEM) {
1600 blk_queue_rq_timeout(sdev->request_queue,
1601 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
1608 * The RAID firmware may require extended timeouts.
1610 blk_queue_rq_timeout(sdev->request_queue,
1611 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
1615 static int megasas_slave_alloc(struct scsi_device *sdev)
1618 struct megasas_instance *instance ;
1619 instance = megasas_lookup_instance(sdev->host->host_no);
1620 if ((sdev->channel < MEGASAS_MAX_PD_CHANNELS) &&
1621 (sdev->type == TYPE_DISK)) {
1623 * Open the OS scan to the SYSTEM PD
1626 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1628 if ((instance->pd_list[pd_index].driveState ==
1629 MR_PD_STATE_SYSTEM) &&
1630 (instance->pd_list[pd_index].driveType ==
1639 void megaraid_sas_kill_hba(struct megasas_instance *instance)
1641 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1642 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
1643 (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
1644 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
1645 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
1646 writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
1648 writel(MFI_STOP_ADP, &instance->reg_set->inbound_doorbell);
1653 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
1654 * restored to max value
1655 * @instance: Adapter soft state
1659 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
1661 unsigned long flags;
1662 if (instance->flag & MEGASAS_FW_BUSY
1663 && time_after(jiffies, instance->last_time + 5 * HZ)
1664 && atomic_read(&instance->fw_outstanding) <
1665 instance->throttlequeuedepth + 1) {
1667 spin_lock_irqsave(instance->host->host_lock, flags);
1668 instance->flag &= ~MEGASAS_FW_BUSY;
1669 if (instance->is_imr) {
1670 instance->host->can_queue =
1671 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
1673 instance->host->can_queue =
1674 instance->max_fw_cmds - MEGASAS_INT_CMDS;
1676 spin_unlock_irqrestore(instance->host->host_lock, flags);
1681 * megasas_complete_cmd_dpc - Returns FW's controller structure
1682 * @instance_addr: Address of adapter soft state
1684 * Tasklet to complete cmds
1686 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
1691 struct megasas_cmd *cmd;
1692 struct megasas_instance *instance =
1693 (struct megasas_instance *)instance_addr;
1694 unsigned long flags;
1696 /* If we have already declared adapter dead, donot complete cmds */
1697 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR )
1700 spin_lock_irqsave(&instance->completion_lock, flags);
1702 producer = le32_to_cpu(*instance->producer);
1703 consumer = le32_to_cpu(*instance->consumer);
1705 while (consumer != producer) {
1706 context = le32_to_cpu(instance->reply_queue[consumer]);
1707 if (context >= instance->max_fw_cmds) {
1708 printk(KERN_ERR "Unexpected context value %x\n",
1713 cmd = instance->cmd_list[context];
1715 megasas_complete_cmd(instance, cmd, DID_OK);
1718 if (consumer == (instance->max_fw_cmds + 1)) {
1723 *instance->consumer = cpu_to_le32(producer);
1725 spin_unlock_irqrestore(&instance->completion_lock, flags);
1728 * Check if we can restore can_queue
1730 megasas_check_and_restore_queue_depth(instance);
1734 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
1737 process_fw_state_change_wq(struct work_struct *work);
1739 void megasas_do_ocr(struct megasas_instance *instance)
1741 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
1742 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
1743 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
1744 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
1746 instance->instancet->disable_intr(instance);
1747 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
1748 instance->issuepend_done = 0;
1750 atomic_set(&instance->fw_outstanding, 0);
1751 megasas_internal_reset_defer_cmds(instance);
1752 process_fw_state_change_wq(&instance->work_init);
1756 * megasas_wait_for_outstanding - Wait for all outstanding cmds
1757 * @instance: Adapter soft state
1759 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
1760 * complete all its outstanding commands. Returns error if one or more IOs
1761 * are pending after this time period. It also marks the controller dead.
1763 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
1767 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
1769 unsigned long flags;
1770 struct list_head clist_local;
1771 struct megasas_cmd *reset_cmd;
1773 u8 kill_adapter_flag;
1775 spin_lock_irqsave(&instance->hba_lock, flags);
1776 adprecovery = instance->adprecovery;
1777 spin_unlock_irqrestore(&instance->hba_lock, flags);
1779 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
1781 INIT_LIST_HEAD(&clist_local);
1782 spin_lock_irqsave(&instance->hba_lock, flags);
1783 list_splice_init(&instance->internal_reset_pending_q,
1785 spin_unlock_irqrestore(&instance->hba_lock, flags);
1787 printk(KERN_NOTICE "megasas: HBA reset wait ...\n");
1788 for (i = 0; i < wait_time; i++) {
1790 spin_lock_irqsave(&instance->hba_lock, flags);
1791 adprecovery = instance->adprecovery;
1792 spin_unlock_irqrestore(&instance->hba_lock, flags);
1793 if (adprecovery == MEGASAS_HBA_OPERATIONAL)
1797 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
1798 printk(KERN_NOTICE "megasas: reset: Stopping HBA.\n");
1799 spin_lock_irqsave(&instance->hba_lock, flags);
1800 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
1801 spin_unlock_irqrestore(&instance->hba_lock, flags);
1806 while (!list_empty(&clist_local)) {
1807 reset_cmd = list_entry((&clist_local)->next,
1808 struct megasas_cmd, list);
1809 list_del_init(&reset_cmd->list);
1810 if (reset_cmd->scmd) {
1811 reset_cmd->scmd->result = DID_RESET << 16;
1812 printk(KERN_NOTICE "%d:%p reset [%02x]\n",
1813 reset_index, reset_cmd,
1814 reset_cmd->scmd->cmnd[0]);
1816 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
1817 megasas_return_cmd(instance, reset_cmd);
1818 } else if (reset_cmd->sync_cmd) {
1819 printk(KERN_NOTICE "megasas:%p synch cmds"
1823 reset_cmd->cmd_status = ENODATA;
1824 instance->instancet->fire_cmd(instance,
1825 reset_cmd->frame_phys_addr,
1826 0, instance->reg_set);
1828 printk(KERN_NOTICE "megasas: %p unexpected"
1838 for (i = 0; i < resetwaittime; i++) {
1840 int outstanding = atomic_read(&instance->fw_outstanding);
1845 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
1846 printk(KERN_NOTICE "megasas: [%2d]waiting for %d "
1847 "commands to complete\n",i,outstanding);
1849 * Call cmd completion routine. Cmd to be
1850 * be completed directly without depending on isr.
1852 megasas_complete_cmd_dpc((unsigned long)instance);
1859 kill_adapter_flag = 0;
1861 fw_state = instance->instancet->read_fw_status_reg(
1862 instance->reg_set) & MFI_STATE_MASK;
1863 if ((fw_state == MFI_STATE_FAULT) &&
1864 (instance->disableOnlineCtrlReset == 0)) {
1866 kill_adapter_flag = 2;
1869 megasas_do_ocr(instance);
1870 kill_adapter_flag = 1;
1872 /* wait for 1 secs to let FW finish the pending cmds */
1878 if (atomic_read(&instance->fw_outstanding) &&
1879 !kill_adapter_flag) {
1880 if (instance->disableOnlineCtrlReset == 0) {
1882 megasas_do_ocr(instance);
1884 /* wait for 5 secs to let FW finish the pending cmds */
1885 for (i = 0; i < wait_time; i++) {
1887 atomic_read(&instance->fw_outstanding);
1895 if (atomic_read(&instance->fw_outstanding) ||
1896 (kill_adapter_flag == 2)) {
1897 printk(KERN_NOTICE "megaraid_sas: pending cmds after reset\n");
1899 * Send signal to FW to stop processing any pending cmds.
1900 * The controller will be taken offline by the OS now.
1902 if ((instance->pdev->device ==
1903 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1904 (instance->pdev->device ==
1905 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
1906 writel(MFI_STOP_ADP,
1907 &instance->reg_set->doorbell);
1909 writel(MFI_STOP_ADP,
1910 &instance->reg_set->inbound_doorbell);
1912 megasas_dump_pending_frames(instance);
1913 spin_lock_irqsave(&instance->hba_lock, flags);
1914 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
1915 spin_unlock_irqrestore(&instance->hba_lock, flags);
1919 printk(KERN_NOTICE "megaraid_sas: no pending cmds after reset\n");
1925 * megasas_generic_reset - Generic reset routine
1926 * @scmd: Mid-layer SCSI command
1928 * This routine implements a generic reset handler for device, bus and host
1929 * reset requests. Device, bus and host specific reset handlers can use this
1930 * function after they do their specific tasks.
1932 static int megasas_generic_reset(struct scsi_cmnd *scmd)
1935 struct megasas_instance *instance;
1937 instance = (struct megasas_instance *)scmd->device->host->hostdata;
1939 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
1940 scmd->cmnd[0], scmd->retries);
1942 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
1943 printk(KERN_ERR "megasas: cannot recover from previous reset "
1948 ret_val = megasas_wait_for_outstanding(instance);
1949 if (ret_val == SUCCESS)
1950 printk(KERN_NOTICE "megasas: reset successful \n");
1952 printk(KERN_ERR "megasas: failed to do reset\n");
1958 * megasas_reset_timer - quiesce the adapter if required
1961 * Sets the FW busy flag and reduces the host->can_queue if the
1962 * cmd has not been completed within the timeout period.
1965 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
1967 struct megasas_instance *instance;
1968 unsigned long flags;
1970 if (time_after(jiffies, scmd->jiffies_at_alloc +
1971 (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) {
1972 return BLK_EH_NOT_HANDLED;
1975 instance = (struct megasas_instance *)scmd->device->host->hostdata;
1976 if (!(instance->flag & MEGASAS_FW_BUSY)) {
1977 /* FW is busy, throttle IO */
1978 spin_lock_irqsave(instance->host->host_lock, flags);
1980 instance->host->can_queue = instance->throttlequeuedepth;
1981 instance->last_time = jiffies;
1982 instance->flag |= MEGASAS_FW_BUSY;
1984 spin_unlock_irqrestore(instance->host->host_lock, flags);
1986 return BLK_EH_RESET_TIMER;
1990 * megasas_reset_device - Device reset handler entry point
1992 static int megasas_reset_device(struct scsi_cmnd *scmd)
1997 * First wait for all commands to complete
1999 ret = megasas_generic_reset(scmd);
2005 * megasas_reset_bus_host - Bus & host reset handler entry point
2007 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
2010 struct megasas_instance *instance;
2011 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2014 * First wait for all commands to complete
2016 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
2017 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
2018 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
2019 ret = megasas_reset_fusion(scmd->device->host);
2021 ret = megasas_generic_reset(scmd);
2027 * megasas_bios_param - Returns disk geometry for a disk
2028 * @sdev: device handle
2029 * @bdev: block device
2030 * @capacity: drive capacity
2031 * @geom: geometry parameters
2034 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
2035 sector_t capacity, int geom[])
2041 /* Default heads (64) & sectors (32) */
2045 tmp = heads * sectors;
2046 cylinders = capacity;
2048 sector_div(cylinders, tmp);
2051 * Handle extended translation size for logical drives > 1Gb
2054 if (capacity >= 0x200000) {
2057 tmp = heads*sectors;
2058 cylinders = capacity;
2059 sector_div(cylinders, tmp);
2064 geom[2] = cylinders;
2069 static void megasas_aen_polling(struct work_struct *work);
2072 * megasas_service_aen - Processes an event notification
2073 * @instance: Adapter soft state
2074 * @cmd: AEN command completed by the ISR
2076 * For AEN, driver sends a command down to FW that is held by the FW till an
2077 * event occurs. When an event of interest occurs, FW completes the command
2078 * that it was previously holding.
2080 * This routines sends SIGIO signal to processes that have registered with the
2084 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
2086 unsigned long flags;
2088 * Don't signal app if it is just an aborted previously registered aen
2090 if ((!cmd->abort_aen) && (instance->unload == 0)) {
2091 spin_lock_irqsave(&poll_aen_lock, flags);
2092 megasas_poll_wait_aen = 1;
2093 spin_unlock_irqrestore(&poll_aen_lock, flags);
2094 wake_up(&megasas_poll_wait);
2095 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
2100 instance->aen_cmd = NULL;
2101 megasas_return_cmd(instance, cmd);
2103 if ((instance->unload == 0) &&
2104 ((instance->issuepend_done == 1))) {
2105 struct megasas_aen_event *ev;
2106 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
2108 printk(KERN_ERR "megasas_service_aen: out of memory\n");
2110 ev->instance = instance;
2112 INIT_DELAYED_WORK(&ev->hotplug_work,
2113 megasas_aen_polling);
2114 schedule_delayed_work(&ev->hotplug_work, 0);
2119 static int megasas_change_queue_depth(struct scsi_device *sdev,
2120 int queue_depth, int reason)
2122 if (reason != SCSI_QDEPTH_DEFAULT)
2125 if (queue_depth > sdev->host->can_queue)
2126 queue_depth = sdev->host->can_queue;
2127 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev),
2134 * Scsi host template for megaraid_sas driver
2136 static struct scsi_host_template megasas_template = {
2138 .module = THIS_MODULE,
2139 .name = "LSI SAS based MegaRAID driver",
2140 .proc_name = "megaraid_sas",
2141 .slave_configure = megasas_slave_configure,
2142 .slave_alloc = megasas_slave_alloc,
2143 .queuecommand = megasas_queue_command,
2144 .eh_device_reset_handler = megasas_reset_device,
2145 .eh_bus_reset_handler = megasas_reset_bus_host,
2146 .eh_host_reset_handler = megasas_reset_bus_host,
2147 .eh_timed_out = megasas_reset_timer,
2148 .bios_param = megasas_bios_param,
2149 .use_clustering = ENABLE_CLUSTERING,
2150 .change_queue_depth = megasas_change_queue_depth,
2154 * megasas_complete_int_cmd - Completes an internal command
2155 * @instance: Adapter soft state
2156 * @cmd: Command to be completed
2158 * The megasas_issue_blocked_cmd() function waits for a command to complete
2159 * after it issues a command. This function wakes up that waiting routine by
2160 * calling wake_up() on the wait queue.
2163 megasas_complete_int_cmd(struct megasas_instance *instance,
2164 struct megasas_cmd *cmd)
2166 cmd->cmd_status = cmd->frame->io.cmd_status;
2168 if (cmd->cmd_status == ENODATA) {
2169 cmd->cmd_status = 0;
2171 wake_up(&instance->int_cmd_wait_q);
2175 * megasas_complete_abort - Completes aborting a command
2176 * @instance: Adapter soft state
2177 * @cmd: Cmd that was issued to abort another cmd
2179 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
2180 * after it issues an abort on a previously issued command. This function
2181 * wakes up all functions waiting on the same wait queue.
2184 megasas_complete_abort(struct megasas_instance *instance,
2185 struct megasas_cmd *cmd)
2187 if (cmd->sync_cmd) {
2189 cmd->cmd_status = 0;
2190 wake_up(&instance->abort_cmd_wait_q);
2197 * megasas_complete_cmd - Completes a command
2198 * @instance: Adapter soft state
2199 * @cmd: Command to be completed
2200 * @alt_status: If non-zero, use this value as status to
2201 * SCSI mid-layer instead of the value returned
2202 * by the FW. This should be used if caller wants
2203 * an alternate status (as in the case of aborted
2207 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
2211 struct megasas_header *hdr = &cmd->frame->hdr;
2212 unsigned long flags;
2213 struct fusion_context *fusion = instance->ctrl_context;
2216 /* flag for the retry reset */
2217 cmd->retry_for_fw_reset = 0;
2220 cmd->scmd->SCp.ptr = NULL;
2223 case MFI_CMD_INVALID:
2224 /* Some older 1068 controller FW may keep a pended
2225 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
2226 when booting the kdump kernel. Ignore this command to
2227 prevent a kernel panic on shutdown of the kdump kernel. */
2228 printk(KERN_WARNING "megaraid_sas: MFI_CMD_INVALID command "
2230 printk(KERN_WARNING "megaraid_sas: If you have a controller "
2231 "other than PERC5, please upgrade your firmware.\n");
2233 case MFI_CMD_PD_SCSI_IO:
2234 case MFI_CMD_LD_SCSI_IO:
2237 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
2238 * issued either through an IO path or an IOCTL path. If it
2239 * was via IOCTL, we will send it to internal completion.
2241 if (cmd->sync_cmd) {
2243 megasas_complete_int_cmd(instance, cmd);
2247 case MFI_CMD_LD_READ:
2248 case MFI_CMD_LD_WRITE:
2251 cmd->scmd->result = alt_status << 16;
2257 atomic_dec(&instance->fw_outstanding);
2259 scsi_dma_unmap(cmd->scmd);
2260 cmd->scmd->scsi_done(cmd->scmd);
2261 megasas_return_cmd(instance, cmd);
2266 switch (hdr->cmd_status) {
2269 cmd->scmd->result = DID_OK << 16;
2272 case MFI_STAT_SCSI_IO_FAILED:
2273 case MFI_STAT_LD_INIT_IN_PROGRESS:
2275 (DID_ERROR << 16) | hdr->scsi_status;
2278 case MFI_STAT_SCSI_DONE_WITH_ERROR:
2280 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
2282 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
2283 memset(cmd->scmd->sense_buffer, 0,
2284 SCSI_SENSE_BUFFERSIZE);
2285 memcpy(cmd->scmd->sense_buffer, cmd->sense,
2288 cmd->scmd->result |= DRIVER_SENSE << 24;
2293 case MFI_STAT_LD_OFFLINE:
2294 case MFI_STAT_DEVICE_NOT_FOUND:
2295 cmd->scmd->result = DID_BAD_TARGET << 16;
2299 printk(KERN_DEBUG "megasas: MFI FW status %#x\n",
2301 cmd->scmd->result = DID_ERROR << 16;
2305 atomic_dec(&instance->fw_outstanding);
2307 scsi_dma_unmap(cmd->scmd);
2308 cmd->scmd->scsi_done(cmd->scmd);
2309 megasas_return_cmd(instance, cmd);
2316 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
2317 /* Check for LD map update */
2318 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
2319 && (cmd->frame->dcmd.mbox.b[1] == 1)) {
2320 fusion->fast_path_io = 0;
2321 spin_lock_irqsave(instance->host->host_lock, flags);
2322 if (cmd->frame->hdr.cmd_status != 0) {
2323 if (cmd->frame->hdr.cmd_status !=
2325 printk(KERN_WARNING "megasas: map sync"
2326 "failed, status = 0x%x.\n",
2327 cmd->frame->hdr.cmd_status);
2329 megasas_return_cmd(instance, cmd);
2330 spin_unlock_irqrestore(
2331 instance->host->host_lock,
2337 megasas_return_cmd(instance, cmd);
2340 * Set fast path IO to ZERO.
2341 * Validate Map will set proper value.
2342 * Meanwhile all IOs will go as LD IO.
2344 if (MR_ValidateMapInfo(instance))
2345 fusion->fast_path_io = 1;
2347 fusion->fast_path_io = 0;
2348 megasas_sync_map_info(instance);
2349 spin_unlock_irqrestore(instance->host->host_lock,
2353 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
2354 opcode == MR_DCMD_CTRL_EVENT_GET) {
2355 spin_lock_irqsave(&poll_aen_lock, flags);
2356 megasas_poll_wait_aen = 0;
2357 spin_unlock_irqrestore(&poll_aen_lock, flags);
2361 * See if got an event notification
2363 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
2364 megasas_service_aen(instance, cmd);
2366 megasas_complete_int_cmd(instance, cmd);
2372 * Cmd issued to abort another cmd returned
2374 megasas_complete_abort(instance, cmd);
2378 printk("megasas: Unknown command completed! [0x%X]\n",
2385 * megasas_issue_pending_cmds_again - issue all pending cmds
2386 * in FW again because of the fw reset
2387 * @instance: Adapter soft state
2390 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
2392 struct megasas_cmd *cmd;
2393 struct list_head clist_local;
2394 union megasas_evt_class_locale class_locale;
2395 unsigned long flags;
2398 INIT_LIST_HEAD(&clist_local);
2399 spin_lock_irqsave(&instance->hba_lock, flags);
2400 list_splice_init(&instance->internal_reset_pending_q, &clist_local);
2401 spin_unlock_irqrestore(&instance->hba_lock, flags);
2403 while (!list_empty(&clist_local)) {
2404 cmd = list_entry((&clist_local)->next,
2405 struct megasas_cmd, list);
2406 list_del_init(&cmd->list);
2408 if (cmd->sync_cmd || cmd->scmd) {
2409 printk(KERN_NOTICE "megaraid_sas: command %p, %p:%d"
2410 "detected to be pending while HBA reset.\n",
2411 cmd, cmd->scmd, cmd->sync_cmd);
2413 cmd->retry_for_fw_reset++;
2415 if (cmd->retry_for_fw_reset == 3) {
2416 printk(KERN_NOTICE "megaraid_sas: cmd %p, %p:%d"
2417 "was tried multiple times during reset."
2418 "Shutting down the HBA\n",
2419 cmd, cmd->scmd, cmd->sync_cmd);
2420 megaraid_sas_kill_hba(instance);
2422 instance->adprecovery =
2423 MEGASAS_HW_CRITICAL_ERROR;
2428 if (cmd->sync_cmd == 1) {
2430 printk(KERN_NOTICE "megaraid_sas: unexpected"
2431 "cmd attached to internal command!\n");
2433 printk(KERN_NOTICE "megasas: %p synchronous cmd"
2434 "on the internal reset queue,"
2435 "issue it again.\n", cmd);
2436 cmd->cmd_status = ENODATA;
2437 instance->instancet->fire_cmd(instance,
2438 cmd->frame_phys_addr ,
2439 0, instance->reg_set);
2440 } else if (cmd->scmd) {
2441 printk(KERN_NOTICE "megasas: %p scsi cmd [%02x]"
2442 "detected on the internal queue, issue again.\n",
2443 cmd, cmd->scmd->cmnd[0]);
2445 atomic_inc(&instance->fw_outstanding);
2446 instance->instancet->fire_cmd(instance,
2447 cmd->frame_phys_addr,
2448 cmd->frame_count-1, instance->reg_set);
2450 printk(KERN_NOTICE "megasas: %p unexpected cmd on the"
2451 "internal reset defer list while re-issue!!\n",
2456 if (instance->aen_cmd) {
2457 printk(KERN_NOTICE "megaraid_sas: aen_cmd in def process\n");
2458 megasas_return_cmd(instance, instance->aen_cmd);
2460 instance->aen_cmd = NULL;
2464 * Initiate AEN (Asynchronous Event Notification)
2466 seq_num = instance->last_seq_num;
2467 class_locale.members.reserved = 0;
2468 class_locale.members.locale = MR_EVT_LOCALE_ALL;
2469 class_locale.members.class = MR_EVT_CLASS_DEBUG;
2471 megasas_register_aen(instance, seq_num, class_locale.word);
2475 * Move the internal reset pending commands to a deferred queue.
2477 * We move the commands pending at internal reset time to a
2478 * pending queue. This queue would be flushed after successful
2479 * completion of the internal reset sequence. if the internal reset
2480 * did not complete in time, the kernel reset handler would flush
2484 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
2486 struct megasas_cmd *cmd;
2488 u32 max_cmd = instance->max_fw_cmds;
2490 unsigned long flags;
2493 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
2494 for (i = 0; i < max_cmd; i++) {
2495 cmd = instance->cmd_list[i];
2496 if (cmd->sync_cmd == 1 || cmd->scmd) {
2497 printk(KERN_NOTICE "megasas: moving cmd[%d]:%p:%d:%p"
2498 "on the defer queue as internal\n",
2499 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
2501 if (!list_empty(&cmd->list)) {
2502 printk(KERN_NOTICE "megaraid_sas: ERROR while"
2503 " moving this cmd:%p, %d %p, it was"
2504 "discovered on some list?\n",
2505 cmd, cmd->sync_cmd, cmd->scmd);
2507 list_del_init(&cmd->list);
2510 list_add_tail(&cmd->list,
2511 &instance->internal_reset_pending_q);
2514 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
2519 process_fw_state_change_wq(struct work_struct *work)
2521 struct megasas_instance *instance =
2522 container_of(work, struct megasas_instance, work_init);
2524 unsigned long flags;
2526 if (instance->adprecovery != MEGASAS_ADPRESET_SM_INFAULT) {
2527 printk(KERN_NOTICE "megaraid_sas: error, recovery st %x \n",
2528 instance->adprecovery);
2532 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) {
2533 printk(KERN_NOTICE "megaraid_sas: FW detected to be in fault"
2534 "state, restarting it...\n");
2536 instance->instancet->disable_intr(instance);
2537 atomic_set(&instance->fw_outstanding, 0);
2539 atomic_set(&instance->fw_reset_no_pci_access, 1);
2540 instance->instancet->adp_reset(instance, instance->reg_set);
2541 atomic_set(&instance->fw_reset_no_pci_access, 0 );
2543 printk(KERN_NOTICE "megaraid_sas: FW restarted successfully,"
2544 "initiating next stage...\n");
2546 printk(KERN_NOTICE "megaraid_sas: HBA recovery state machine,"
2547 "state 2 starting...\n");
2549 /*waitting for about 20 second before start the second init*/
2550 for (wait = 0; wait < 30; wait++) {
2554 if (megasas_transition_to_ready(instance, 1)) {
2555 printk(KERN_NOTICE "megaraid_sas:adapter not ready\n");
2557 megaraid_sas_kill_hba(instance);
2558 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2562 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2563 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2564 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
2566 *instance->consumer = *instance->producer;
2568 *instance->consumer = 0;
2569 *instance->producer = 0;
2572 megasas_issue_init_mfi(instance);
2574 spin_lock_irqsave(&instance->hba_lock, flags);
2575 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
2576 spin_unlock_irqrestore(&instance->hba_lock, flags);
2577 instance->instancet->enable_intr(instance);
2579 megasas_issue_pending_cmds_again(instance);
2580 instance->issuepend_done = 1;
2586 * megasas_deplete_reply_queue - Processes all completed commands
2587 * @instance: Adapter soft state
2588 * @alt_status: Alternate status to be returned to
2589 * SCSI mid-layer instead of the status
2590 * returned by the FW
2591 * Note: this must be called with hba lock held
2594 megasas_deplete_reply_queue(struct megasas_instance *instance,
2600 if ((mfiStatus = instance->instancet->check_reset(instance,
2601 instance->reg_set)) == 1) {
2605 if ((mfiStatus = instance->instancet->clear_intr(
2608 /* Hardware may not set outbound_intr_status in MSI-X mode */
2609 if (!instance->msix_vectors)
2613 instance->mfiStatus = mfiStatus;
2615 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
2616 fw_state = instance->instancet->read_fw_status_reg(
2617 instance->reg_set) & MFI_STATE_MASK;
2619 if (fw_state != MFI_STATE_FAULT) {
2620 printk(KERN_NOTICE "megaraid_sas: fw state:%x\n",
2624 if ((fw_state == MFI_STATE_FAULT) &&
2625 (instance->disableOnlineCtrlReset == 0)) {
2626 printk(KERN_NOTICE "megaraid_sas: wait adp restart\n");
2628 if ((instance->pdev->device ==
2629 PCI_DEVICE_ID_LSI_SAS1064R) ||
2630 (instance->pdev->device ==
2631 PCI_DEVICE_ID_DELL_PERC5) ||
2632 (instance->pdev->device ==
2633 PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2635 *instance->consumer =
2636 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
2640 instance->instancet->disable_intr(instance);
2641 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
2642 instance->issuepend_done = 0;
2644 atomic_set(&instance->fw_outstanding, 0);
2645 megasas_internal_reset_defer_cmds(instance);
2647 printk(KERN_NOTICE "megasas: fwState=%x, stage:%d\n",
2648 fw_state, instance->adprecovery);
2650 schedule_work(&instance->work_init);
2654 printk(KERN_NOTICE "megasas: fwstate:%x, dis_OCR=%x\n",
2655 fw_state, instance->disableOnlineCtrlReset);
2659 tasklet_schedule(&instance->isr_tasklet);
2663 * megasas_isr - isr entry point
2665 static irqreturn_t megasas_isr(int irq, void *devp)
2667 struct megasas_irq_context *irq_context = devp;
2668 struct megasas_instance *instance = irq_context->instance;
2669 unsigned long flags;
2672 if (atomic_read(&instance->fw_reset_no_pci_access))
2675 spin_lock_irqsave(&instance->hba_lock, flags);
2676 rc = megasas_deplete_reply_queue(instance, DID_OK);
2677 spin_unlock_irqrestore(&instance->hba_lock, flags);
2683 * megasas_transition_to_ready - Move the FW to READY state
2684 * @instance: Adapter soft state
2686 * During the initialization, FW passes can potentially be in any one of
2687 * several possible states. If the FW in operational, waiting-for-handshake
2688 * states, driver must take steps to bring it to ready state. Otherwise, it
2689 * has to wait for the ready state.
2692 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
2698 u32 abs_state, curr_abs_state;
2700 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;
2702 if (fw_state != MFI_STATE_READY)
2703 printk(KERN_INFO "megasas: Waiting for FW to come to ready"
2706 while (fw_state != MFI_STATE_READY) {
2709 instance->instancet->read_fw_status_reg(instance->reg_set);
2713 case MFI_STATE_FAULT:
2714 printk(KERN_DEBUG "megasas: FW in FAULT state!!\n");
2716 max_wait = MEGASAS_RESET_WAIT_TIME;
2717 cur_state = MFI_STATE_FAULT;
2722 case MFI_STATE_WAIT_HANDSHAKE:
2724 * Set the CLR bit in inbound doorbell
2726 if ((instance->pdev->device ==
2727 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2728 (instance->pdev->device ==
2729 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2730 (instance->pdev->device ==
2731 PCI_DEVICE_ID_LSI_FUSION) ||
2732 (instance->pdev->device ==
2733 PCI_DEVICE_ID_LSI_INVADER) ||
2734 (instance->pdev->device ==
2735 PCI_DEVICE_ID_LSI_FURY)) {
2737 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
2738 &instance->reg_set->doorbell);
2741 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
2742 &instance->reg_set->inbound_doorbell);
2745 max_wait = MEGASAS_RESET_WAIT_TIME;
2746 cur_state = MFI_STATE_WAIT_HANDSHAKE;
2749 case MFI_STATE_BOOT_MESSAGE_PENDING:
2750 if ((instance->pdev->device ==
2751 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2752 (instance->pdev->device ==
2753 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2754 (instance->pdev->device ==
2755 PCI_DEVICE_ID_LSI_FUSION) ||
2756 (instance->pdev->device ==
2757 PCI_DEVICE_ID_LSI_INVADER) ||
2758 (instance->pdev->device ==
2759 PCI_DEVICE_ID_LSI_FURY)) {
2760 writel(MFI_INIT_HOTPLUG,
2761 &instance->reg_set->doorbell);
2763 writel(MFI_INIT_HOTPLUG,
2764 &instance->reg_set->inbound_doorbell);
2766 max_wait = MEGASAS_RESET_WAIT_TIME;
2767 cur_state = MFI_STATE_BOOT_MESSAGE_PENDING;
2770 case MFI_STATE_OPERATIONAL:
2772 * Bring it to READY state; assuming max wait 10 secs
2774 instance->instancet->disable_intr(instance);
2775 if ((instance->pdev->device ==
2776 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2777 (instance->pdev->device ==
2778 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2779 (instance->pdev->device
2780 == PCI_DEVICE_ID_LSI_FUSION) ||
2781 (instance->pdev->device
2782 == PCI_DEVICE_ID_LSI_INVADER) ||
2783 (instance->pdev->device
2784 == PCI_DEVICE_ID_LSI_FURY)) {
2785 writel(MFI_RESET_FLAGS,
2786 &instance->reg_set->doorbell);
2787 if ((instance->pdev->device ==
2788 PCI_DEVICE_ID_LSI_FUSION) ||
2789 (instance->pdev->device ==
2790 PCI_DEVICE_ID_LSI_INVADER) ||
2791 (instance->pdev->device ==
2792 PCI_DEVICE_ID_LSI_FURY)) {
2793 for (i = 0; i < (10 * 1000); i += 20) {
2804 writel(MFI_RESET_FLAGS,
2805 &instance->reg_set->inbound_doorbell);
2807 max_wait = MEGASAS_RESET_WAIT_TIME;
2808 cur_state = MFI_STATE_OPERATIONAL;
2811 case MFI_STATE_UNDEFINED:
2813 * This state should not last for more than 2 seconds
2815 max_wait = MEGASAS_RESET_WAIT_TIME;
2816 cur_state = MFI_STATE_UNDEFINED;
2819 case MFI_STATE_BB_INIT:
2820 max_wait = MEGASAS_RESET_WAIT_TIME;
2821 cur_state = MFI_STATE_BB_INIT;
2824 case MFI_STATE_FW_INIT:
2825 max_wait = MEGASAS_RESET_WAIT_TIME;
2826 cur_state = MFI_STATE_FW_INIT;
2829 case MFI_STATE_FW_INIT_2:
2830 max_wait = MEGASAS_RESET_WAIT_TIME;
2831 cur_state = MFI_STATE_FW_INIT_2;
2834 case MFI_STATE_DEVICE_SCAN:
2835 max_wait = MEGASAS_RESET_WAIT_TIME;
2836 cur_state = MFI_STATE_DEVICE_SCAN;
2839 case MFI_STATE_FLUSH_CACHE:
2840 max_wait = MEGASAS_RESET_WAIT_TIME;
2841 cur_state = MFI_STATE_FLUSH_CACHE;
2845 printk(KERN_DEBUG "megasas: Unknown state 0x%x\n",
2851 * The cur_state should not last for more than max_wait secs
2853 for (i = 0; i < (max_wait * 1000); i++) {
2854 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) &
2857 instance->instancet->read_fw_status_reg(instance->reg_set);
2859 if (abs_state == curr_abs_state) {
2866 * Return error if fw_state hasn't changed after max_wait
2868 if (curr_abs_state == abs_state) {
2869 printk(KERN_DEBUG "FW state [%d] hasn't changed "
2870 "in %d secs\n", fw_state, max_wait);
2874 printk(KERN_INFO "megasas: FW now in Ready state\n");
2880 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
2881 * @instance: Adapter soft state
2883 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
2886 u32 max_cmd = instance->max_mfi_cmds;
2887 struct megasas_cmd *cmd;
2889 if (!instance->frame_dma_pool)
2893 * Return all frames to pool
2895 for (i = 0; i < max_cmd; i++) {
2897 cmd = instance->cmd_list[i];
2900 pci_pool_free(instance->frame_dma_pool, cmd->frame,
2901 cmd->frame_phys_addr);
2904 pci_pool_free(instance->sense_dma_pool, cmd->sense,
2905 cmd->sense_phys_addr);
2909 * Now destroy the pool itself
2911 pci_pool_destroy(instance->frame_dma_pool);
2912 pci_pool_destroy(instance->sense_dma_pool);
2914 instance->frame_dma_pool = NULL;
2915 instance->sense_dma_pool = NULL;
2919 * megasas_create_frame_pool - Creates DMA pool for cmd frames
2920 * @instance: Adapter soft state
2922 * Each command packet has an embedded DMA memory buffer that is used for
2923 * filling MFI frame and the SG list that immediately follows the frame. This
2924 * function creates those DMA memory buffers for each command packet by using
2925 * PCI pool facility.
2927 static int megasas_create_frame_pool(struct megasas_instance *instance)
2935 struct megasas_cmd *cmd;
2937 max_cmd = instance->max_mfi_cmds;
2940 * Size of our frame is 64 bytes for MFI frame, followed by max SG
2941 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer
2943 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
2944 sizeof(struct megasas_sge32);
2946 if (instance->flag_ieee) {
2947 sge_sz = sizeof(struct megasas_sge_skinny);
2951 * Calculated the number of 64byte frames required for SGL
2953 sgl_sz = sge_sz * instance->max_num_sge;
2954 frame_count = (sgl_sz + MEGAMFI_FRAME_SIZE - 1) / MEGAMFI_FRAME_SIZE;
2958 * We need one extra frame for the MFI command
2962 total_sz = MEGAMFI_FRAME_SIZE * frame_count;
2964 * Use DMA pool facility provided by PCI layer
2966 instance->frame_dma_pool = pci_pool_create("megasas frame pool",
2967 instance->pdev, total_sz, 64,
2970 if (!instance->frame_dma_pool) {
2971 printk(KERN_DEBUG "megasas: failed to setup frame pool\n");
2975 instance->sense_dma_pool = pci_pool_create("megasas sense pool",
2976 instance->pdev, 128, 4, 0);
2978 if (!instance->sense_dma_pool) {
2979 printk(KERN_DEBUG "megasas: failed to setup sense pool\n");
2981 pci_pool_destroy(instance->frame_dma_pool);
2982 instance->frame_dma_pool = NULL;
2988 * Allocate and attach a frame to each of the commands in cmd_list.
2989 * By making cmd->index as the context instead of the &cmd, we can
2990 * always use 32bit context regardless of the architecture
2992 for (i = 0; i < max_cmd; i++) {
2994 cmd = instance->cmd_list[i];
2996 cmd->frame = pci_pool_alloc(instance->frame_dma_pool,
2997 GFP_KERNEL, &cmd->frame_phys_addr);
2999 cmd->sense = pci_pool_alloc(instance->sense_dma_pool,
3000 GFP_KERNEL, &cmd->sense_phys_addr);
3003 * megasas_teardown_frame_pool() takes care of freeing
3004 * whatever has been allocated
3006 if (!cmd->frame || !cmd->sense) {
3007 printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n");
3008 megasas_teardown_frame_pool(instance);
3012 memset(cmd->frame, 0, total_sz);
3013 cmd->frame->io.context = cpu_to_le32(cmd->index);
3014 cmd->frame->io.pad_0 = 0;
3015 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) &&
3016 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) &&
3017 (instance->pdev->device != PCI_DEVICE_ID_LSI_FURY) &&
3019 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
3026 * megasas_free_cmds - Free all the cmds in the free cmd pool
3027 * @instance: Adapter soft state
3029 void megasas_free_cmds(struct megasas_instance *instance)
3032 /* First free the MFI frame pool */
3033 megasas_teardown_frame_pool(instance);
3035 /* Free all the commands in the cmd_list */
3036 for (i = 0; i < instance->max_mfi_cmds; i++)
3038 kfree(instance->cmd_list[i]);
3040 /* Free the cmd_list buffer itself */
3041 kfree(instance->cmd_list);
3042 instance->cmd_list = NULL;
3044 INIT_LIST_HEAD(&instance->cmd_pool);
3048 * megasas_alloc_cmds - Allocates the command packets
3049 * @instance: Adapter soft state
3051 * Each command that is issued to the FW, whether IO commands from the OS or
3052 * internal commands like IOCTLs, are wrapped in local data structure called
3053 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
3056 * Each frame has a 32-bit field called context (tag). This context is used
3057 * to get back the megasas_cmd from the frame when a frame gets completed in
3058 * the ISR. Typically the address of the megasas_cmd itself would be used as
3059 * the context. But we wanted to keep the differences between 32 and 64 bit
3060 * systems to the mininum. We always use 32 bit integers for the context. In
3061 * this driver, the 32 bit values are the indices into an array cmd_list.
3062 * This array is used only to look up the megasas_cmd given the context. The
3063 * free commands themselves are maintained in a linked list called cmd_pool.
3065 int megasas_alloc_cmds(struct megasas_instance *instance)
3070 struct megasas_cmd *cmd;
3072 max_cmd = instance->max_mfi_cmds;
3075 * instance->cmd_list is an array of struct megasas_cmd pointers.
3076 * Allocate the dynamic array first and then allocate individual
3079 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
3081 if (!instance->cmd_list) {
3082 printk(KERN_DEBUG "megasas: out of memory\n");
3086 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
3088 for (i = 0; i < max_cmd; i++) {
3089 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
3092 if (!instance->cmd_list[i]) {
3094 for (j = 0; j < i; j++)
3095 kfree(instance->cmd_list[j]);
3097 kfree(instance->cmd_list);
3098 instance->cmd_list = NULL;
3105 * Add all the commands to command pool (instance->cmd_pool)
3107 for (i = 0; i < max_cmd; i++) {
3108 cmd = instance->cmd_list[i];
3109 memset(cmd, 0, sizeof(struct megasas_cmd));
3112 cmd->instance = instance;
3114 list_add_tail(&cmd->list, &instance->cmd_pool);
3118 * Create a frame pool and assign one frame to each cmd
3120 if (megasas_create_frame_pool(instance)) {
3121 printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n");
3122 megasas_free_cmds(instance);
3129 * megasas_get_pd_list_info - Returns FW's pd_list structure
3130 * @instance: Adapter soft state
3131 * @pd_list: pd_list structure
3133 * Issues an internal command (DCMD) to get the FW's controller PD
3134 * list structure. This information is mainly used to find out SYSTEM
3135 * supported by the FW.
3138 megasas_get_pd_list(struct megasas_instance *instance)
3140 int ret = 0, pd_index = 0;
3141 struct megasas_cmd *cmd;
3142 struct megasas_dcmd_frame *dcmd;
3143 struct MR_PD_LIST *ci;
3144 struct MR_PD_ADDRESS *pd_addr;
3145 dma_addr_t ci_h = 0;
3147 cmd = megasas_get_cmd(instance);
3150 printk(KERN_DEBUG "megasas (get_pd_list): Failed to get cmd\n");
3154 dcmd = &cmd->frame->dcmd;
3156 ci = pci_alloc_consistent(instance->pdev,
3157 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h);
3160 printk(KERN_DEBUG "Failed to alloc mem for pd_list\n");
3161 megasas_return_cmd(instance, cmd);
3165 memset(ci, 0, sizeof(*ci));
3166 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3168 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
3169 dcmd->mbox.b[1] = 0;
3170 dcmd->cmd = MFI_CMD_DCMD;
3171 dcmd->cmd_status = 0xFF;
3172 dcmd->sge_count = 1;
3173 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
3176 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
3177 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
3178 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
3179 dcmd->sgl.sge32[0].length = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
3181 if (!megasas_issue_polled(instance, cmd)) {
3188 * the following function will get the instance PD LIST.
3194 (le32_to_cpu(ci->count) <
3195 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) {
3197 memset(instance->local_pd_list, 0,
3198 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
3200 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
3202 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid =
3203 le16_to_cpu(pd_addr->deviceId);
3204 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType =
3205 pd_addr->scsiDevType;
3206 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState =
3210 memcpy(instance->pd_list, instance->local_pd_list,
3211 sizeof(instance->pd_list));
3214 pci_free_consistent(instance->pdev,
3215 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
3217 megasas_return_cmd(instance, cmd);
3223 * megasas_get_ld_list_info - Returns FW's ld_list structure
3224 * @instance: Adapter soft state
3225 * @ld_list: ld_list structure
3227 * Issues an internal command (DCMD) to get the FW's controller PD
3228 * list structure. This information is mainly used to find out SYSTEM
3229 * supported by the FW.
3232 megasas_get_ld_list(struct megasas_instance *instance)
3234 int ret = 0, ld_index = 0, ids = 0;
3235 struct megasas_cmd *cmd;
3236 struct megasas_dcmd_frame *dcmd;
3237 struct MR_LD_LIST *ci;
3238 dma_addr_t ci_h = 0;
3241 cmd = megasas_get_cmd(instance);
3244 printk(KERN_DEBUG "megasas_get_ld_list: Failed to get cmd\n");
3248 dcmd = &cmd->frame->dcmd;
3250 ci = pci_alloc_consistent(instance->pdev,
3251 sizeof(struct MR_LD_LIST),
3255 printk(KERN_DEBUG "Failed to alloc mem in get_ld_list\n");
3256 megasas_return_cmd(instance, cmd);
3260 memset(ci, 0, sizeof(*ci));
3261 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3263 dcmd->cmd = MFI_CMD_DCMD;
3264 dcmd->cmd_status = 0xFF;
3265 dcmd->sge_count = 1;
3266 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
3268 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
3269 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
3270 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
3271 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_LIST));
3274 if (!megasas_issue_polled(instance, cmd)) {
3280 ld_count = le32_to_cpu(ci->ldCount);
3282 /* the following function will get the instance PD LIST */
3284 if ((ret == 0) && (ld_count <= MAX_LOGICAL_DRIVES)) {
3285 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
3287 for (ld_index = 0; ld_index < ld_count; ld_index++) {
3288 if (ci->ldList[ld_index].state != 0) {
3289 ids = ci->ldList[ld_index].ref.targetId;
3290 instance->ld_ids[ids] =
3291 ci->ldList[ld_index].ref.targetId;
3296 pci_free_consistent(instance->pdev,
3297 sizeof(struct MR_LD_LIST),
3301 megasas_return_cmd(instance, cmd);
3306 * megasas_ld_list_query - Returns FW's ld_list structure
3307 * @instance: Adapter soft state
3308 * @ld_list: ld_list structure
3310 * Issues an internal command (DCMD) to get the FW's controller PD
3311 * list structure. This information is mainly used to find out SYSTEM
3312 * supported by the FW.
3315 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
3317 int ret = 0, ld_index = 0, ids = 0;
3318 struct megasas_cmd *cmd;
3319 struct megasas_dcmd_frame *dcmd;
3320 struct MR_LD_TARGETID_LIST *ci;
3321 dma_addr_t ci_h = 0;
3324 cmd = megasas_get_cmd(instance);
3328 "megasas:(megasas_ld_list_query): Failed to get cmd\n");
3332 dcmd = &cmd->frame->dcmd;
3334 ci = pci_alloc_consistent(instance->pdev,
3335 sizeof(struct MR_LD_TARGETID_LIST), &ci_h);
3339 "megasas: Failed to alloc mem for ld_list_query\n");
3340 megasas_return_cmd(instance, cmd);
3344 memset(ci, 0, sizeof(*ci));
3345 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3347 dcmd->mbox.b[0] = query_type;
3349 dcmd->cmd = MFI_CMD_DCMD;
3350 dcmd->cmd_status = 0xFF;
3351 dcmd->sge_count = 1;
3352 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
3354 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
3355 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
3356 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
3357 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
3360 if (!megasas_issue_polled(instance, cmd) && !dcmd->cmd_status) {
3363 /* On failure, call older LD list DCMD */
3367 tgtid_count = le32_to_cpu(ci->count);
3369 if ((ret == 0) && (tgtid_count <= (MAX_LOGICAL_DRIVES))) {
3370 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
3371 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
3372 ids = ci->targetId[ld_index];
3373 instance->ld_ids[ids] = ci->targetId[ld_index];
3378 pci_free_consistent(instance->pdev, sizeof(struct MR_LD_TARGETID_LIST),
3381 megasas_return_cmd(instance, cmd);
3387 * megasas_get_controller_info - Returns FW's controller structure
3388 * @instance: Adapter soft state
3389 * @ctrl_info: Controller information structure
3391 * Issues an internal command (DCMD) to get the FW's controller structure.
3392 * This information is mainly used to find out the maximum IO transfer per
3393 * command supported by the FW.
3396 megasas_get_ctrl_info(struct megasas_instance *instance,
3397 struct megasas_ctrl_info *ctrl_info)
3400 struct megasas_cmd *cmd;
3401 struct megasas_dcmd_frame *dcmd;
3402 struct megasas_ctrl_info *ci;
3403 dma_addr_t ci_h = 0;
3405 cmd = megasas_get_cmd(instance);
3408 printk(KERN_DEBUG "megasas: Failed to get a free cmd\n");
3412 dcmd = &cmd->frame->dcmd;
3414 ci = pci_alloc_consistent(instance->pdev,
3415 sizeof(struct megasas_ctrl_info), &ci_h);
3418 printk(KERN_DEBUG "Failed to alloc mem for ctrl info\n");
3419 megasas_return_cmd(instance, cmd);
3423 memset(ci, 0, sizeof(*ci));
3424 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3426 dcmd->cmd = MFI_CMD_DCMD;
3427 dcmd->cmd_status = 0xFF;
3428 dcmd->sge_count = 1;
3429 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
3432 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
3433 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
3434 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
3435 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_ctrl_info));
3437 if (!megasas_issue_polled(instance, cmd)) {
3439 memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info));
3444 pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info),
3447 megasas_return_cmd(instance, cmd);
3452 * megasas_issue_init_mfi - Initializes the FW
3453 * @instance: Adapter soft state
3455 * Issues the INIT MFI cmd
3458 megasas_issue_init_mfi(struct megasas_instance *instance)
3462 struct megasas_cmd *cmd;
3464 struct megasas_init_frame *init_frame;
3465 struct megasas_init_queue_info *initq_info;
3466 dma_addr_t init_frame_h;
3467 dma_addr_t initq_info_h;
3470 * Prepare a init frame. Note the init frame points to queue info
3471 * structure. Each frame has SGL allocated after first 64 bytes. For
3472 * this frame - since we don't need any SGL - we use SGL's space as
3473 * queue info structure
3475 * We will not get a NULL command below. We just created the pool.
3477 cmd = megasas_get_cmd(instance);
3479 init_frame = (struct megasas_init_frame *)cmd->frame;
3480 initq_info = (struct megasas_init_queue_info *)
3481 ((unsigned long)init_frame + 64);
3483 init_frame_h = cmd->frame_phys_addr;
3484 initq_info_h = init_frame_h + 64;
3486 context = init_frame->context;
3487 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
3488 memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
3489 init_frame->context = context;
3491 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
3492 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
3494 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
3495 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
3497 init_frame->cmd = MFI_CMD_INIT;
3498 init_frame->cmd_status = 0xFF;
3499 init_frame->queue_info_new_phys_addr_lo =
3500 cpu_to_le32(lower_32_bits(initq_info_h));
3501 init_frame->queue_info_new_phys_addr_hi =
3502 cpu_to_le32(upper_32_bits(initq_info_h));
3504 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
3507 * disable the intr before firing the init frame to FW
3509 instance->instancet->disable_intr(instance);
3512 * Issue the init frame in polled mode
3515 if (megasas_issue_polled(instance, cmd)) {
3516 printk(KERN_ERR "megasas: Failed to init firmware\n");
3517 megasas_return_cmd(instance, cmd);
3521 megasas_return_cmd(instance, cmd);
3530 megasas_init_adapter_mfi(struct megasas_instance *instance)
3532 struct megasas_register_set __iomem *reg_set;
3536 reg_set = instance->reg_set;
3539 * Get various operational parameters from status register
3541 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
3543 * Reduce the max supported cmds by 1. This is to ensure that the
3544 * reply_q_sz (1 more than the max cmd that driver may send)
3545 * does not exceed max cmds that the FW can support
3547 instance->max_fw_cmds = instance->max_fw_cmds-1;
3548 instance->max_mfi_cmds = instance->max_fw_cmds;
3549 instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >>
3552 * Create a pool of commands
3554 if (megasas_alloc_cmds(instance))
3555 goto fail_alloc_cmds;
3558 * Allocate memory for reply queue. Length of reply queue should
3559 * be _one_ more than the maximum commands handled by the firmware.
3561 * Note: When FW completes commands, it places corresponding contex
3562 * values in this circular reply queue. This circular queue is a fairly
3563 * typical producer-consumer queue. FW is the producer (of completed
3564 * commands) and the driver is the consumer.
3566 context_sz = sizeof(u32);
3567 reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
3569 instance->reply_queue = pci_alloc_consistent(instance->pdev,
3571 &instance->reply_queue_h);
3573 if (!instance->reply_queue) {
3574 printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n");
3575 goto fail_reply_queue;
3578 if (megasas_issue_init_mfi(instance))
3581 instance->fw_support_ieee = 0;
3582 instance->fw_support_ieee =
3583 (instance->instancet->read_fw_status_reg(reg_set) &
3586 printk(KERN_NOTICE "megasas_init_mfi: fw_support_ieee=%d",
3587 instance->fw_support_ieee);
3589 if (instance->fw_support_ieee)
3590 instance->flag_ieee = 1;
3596 pci_free_consistent(instance->pdev, reply_q_sz,
3597 instance->reply_queue, instance->reply_queue_h);
3599 megasas_free_cmds(instance);
3606 * megasas_init_fw - Initializes the FW
3607 * @instance: Adapter soft state
3609 * This is the main function for initializing firmware
3612 static int megasas_init_fw(struct megasas_instance *instance)
3616 u32 tmp_sectors, msix_enable, scratch_pad_2;
3617 struct megasas_register_set __iomem *reg_set;
3618 struct megasas_ctrl_info *ctrl_info;
3619 unsigned long bar_list;
3620 int i, loop, fw_msix_count = 0;
3622 /* Find first memory bar */
3623 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
3624 instance->bar = find_first_bit(&bar_list, sizeof(unsigned long));
3625 instance->base_addr = pci_resource_start(instance->pdev, instance->bar);
3626 if (pci_request_selected_regions(instance->pdev, instance->bar,
3628 printk(KERN_DEBUG "megasas: IO memory region busy!\n");
3632 instance->reg_set = ioremap_nocache(instance->base_addr, 8192);
3634 if (!instance->reg_set) {
3635 printk(KERN_DEBUG "megasas: Failed to map IO mem\n");
3639 reg_set = instance->reg_set;
3641 switch (instance->pdev->device) {
3642 case PCI_DEVICE_ID_LSI_FUSION:
3643 case PCI_DEVICE_ID_LSI_INVADER:
3644 case PCI_DEVICE_ID_LSI_FURY:
3645 instance->instancet = &megasas_instance_template_fusion;
3647 case PCI_DEVICE_ID_LSI_SAS1078R:
3648 case PCI_DEVICE_ID_LSI_SAS1078DE:
3649 instance->instancet = &megasas_instance_template_ppc;
3651 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
3652 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
3653 instance->instancet = &megasas_instance_template_gen2;
3655 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
3656 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
3657 instance->instancet = &megasas_instance_template_skinny;
3659 case PCI_DEVICE_ID_LSI_SAS1064R:
3660 case PCI_DEVICE_ID_DELL_PERC5:
3662 instance->instancet = &megasas_instance_template_xscale;
3666 if (megasas_transition_to_ready(instance, 0)) {
3667 atomic_set(&instance->fw_reset_no_pci_access, 1);
3668 instance->instancet->adp_reset
3669 (instance, instance->reg_set);
3670 atomic_set(&instance->fw_reset_no_pci_access, 0);
3671 dev_info(&instance->pdev->dev,
3672 "megasas: FW restarted successfully from %s!\n",
3675 /*waitting for about 30 second before retry*/
3678 if (megasas_transition_to_ready(instance, 0))
3679 goto fail_ready_state;
3683 * MSI-X host index 0 is common for all adapter.
3684 * It is used for all MPT based Adapters.
3686 instance->reply_post_host_index_addr[0] =
3687 (u32 *)((u8 *)instance->reg_set +
3688 MPI2_REPLY_POST_HOST_INDEX_OFFSET);
3690 /* Check if MSI-X is supported while in ready state */
3691 msix_enable = (instance->instancet->read_fw_status_reg(reg_set) &
3693 if (msix_enable && !msix_disable) {
3694 scratch_pad_2 = readl
3695 (&instance->reg_set->outbound_scratch_pad_2);
3696 /* Check max MSI-X vectors */
3697 if (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) {
3698 instance->msix_vectors = (scratch_pad_2
3699 & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
3700 fw_msix_count = instance->msix_vectors;
3702 instance->msix_vectors =
3704 instance->msix_vectors);
3705 } else if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)
3706 || (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
3707 /* Invader/Fury supports more than 8 MSI-X */
3708 instance->msix_vectors = ((scratch_pad_2
3709 & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
3710 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
3711 fw_msix_count = instance->msix_vectors;
3712 /* Save 1-15 reply post index address to local memory
3713 * Index 0 is already saved from reg offset
3714 * MPI2_REPLY_POST_HOST_INDEX_OFFSET
3716 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
3717 instance->reply_post_host_index_addr[loop] =
3718 (u32 *)((u8 *)instance->reg_set +
3719 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
3723 instance->msix_vectors = min(msix_vectors,
3724 instance->msix_vectors);
3726 instance->msix_vectors = 1;
3727 /* Don't bother allocating more MSI-X vectors than cpus */
3728 instance->msix_vectors = min(instance->msix_vectors,
3729 (unsigned int)num_online_cpus());
3730 for (i = 0; i < instance->msix_vectors; i++)
3731 instance->msixentry[i].entry = i;
3732 i = pci_enable_msix(instance->pdev, instance->msixentry,
3733 instance->msix_vectors);
3736 if (!pci_enable_msix(instance->pdev,
3737 instance->msixentry, i))
3738 instance->msix_vectors = i;
3740 instance->msix_vectors = 0;
3743 instance->msix_vectors = 0;
3745 dev_info(&instance->pdev->dev, "[scsi%d]: FW supports"
3746 "<%d> MSIX vector,Online CPUs: <%d>,"
3747 "Current MSIX <%d>\n", instance->host->host_no,
3748 fw_msix_count, (unsigned int)num_online_cpus(),
3749 instance->msix_vectors);
3752 /* Get operational params, sge flags, send init cmd to controller */
3753 if (instance->instancet->init_adapter(instance))
3754 goto fail_init_adapter;
3756 printk(KERN_ERR "megasas: INIT adapter done\n");
3759 * the following function will get the PD LIST.
3762 memset(instance->pd_list, 0 ,
3763 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
3764 megasas_get_pd_list(instance);
3766 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
3767 if (megasas_ld_list_query(instance,
3768 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
3769 megasas_get_ld_list(instance);
3771 ctrl_info = kmalloc(sizeof(struct megasas_ctrl_info), GFP_KERNEL);
3774 * Compute the max allowed sectors per IO: The controller info has two
3775 * limits on max sectors. Driver should use the minimum of these two.
3777 * 1 << stripe_sz_ops.min = max sectors per strip
3779 * Note that older firmwares ( < FW ver 30) didn't report information
3780 * to calculate max_sectors_1. So the number ended up as zero always.
3783 if (ctrl_info && !megasas_get_ctrl_info(instance, ctrl_info)) {
3785 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
3786 le16_to_cpu(ctrl_info->max_strips_per_io);
3787 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
3789 tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2);
3791 /*Check whether controller is iMR or MR */
3792 if (ctrl_info->memory_size) {
3793 instance->is_imr = 0;
3794 dev_info(&instance->pdev->dev, "Controller type: MR,"
3795 "Memory size is: %dMB\n",
3796 le16_to_cpu(ctrl_info->memory_size));
3798 instance->is_imr = 1;
3799 dev_info(&instance->pdev->dev,
3800 "Controller type: iMR\n");
3802 /* OnOffProperties are converted into CPU arch*/
3803 le32_to_cpus((u32 *)&ctrl_info->properties.OnOffProperties);
3804 instance->disableOnlineCtrlReset =
3805 ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset;
3806 /* adapterOperations2 are converted into CPU arch*/
3807 le32_to_cpus((u32 *)&ctrl_info->adapterOperations2);
3808 instance->UnevenSpanSupport =
3809 ctrl_info->adapterOperations2.supportUnevenSpans;
3810 if (instance->UnevenSpanSupport) {
3811 struct fusion_context *fusion = instance->ctrl_context;
3812 dev_info(&instance->pdev->dev, "FW supports: "
3813 "UnevenSpanSupport=%x\n", instance->UnevenSpanSupport);
3814 if (MR_ValidateMapInfo(instance))
3815 fusion->fast_path_io = 1;
3817 fusion->fast_path_io = 0;
3821 instance->max_sectors_per_req = instance->max_num_sge *
3823 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
3824 instance->max_sectors_per_req = tmp_sectors;
3828 /* Check for valid throttlequeuedepth module parameter */
3829 if (instance->is_imr) {
3830 if (throttlequeuedepth > (instance->max_fw_cmds -
3831 MEGASAS_SKINNY_INT_CMDS))
3832 instance->throttlequeuedepth =
3833 MEGASAS_THROTTLE_QUEUE_DEPTH;
3835 instance->throttlequeuedepth = throttlequeuedepth;
3837 if (throttlequeuedepth > (instance->max_fw_cmds -
3839 instance->throttlequeuedepth =
3840 MEGASAS_THROTTLE_QUEUE_DEPTH;
3842 instance->throttlequeuedepth = throttlequeuedepth;
3846 * Setup tasklet for cmd completion
3849 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
3850 (unsigned long)instance);
3856 iounmap(instance->reg_set);
3859 pci_release_selected_regions(instance->pdev, instance->bar);
3865 * megasas_release_mfi - Reverses the FW initialization
3866 * @intance: Adapter soft state
3868 static void megasas_release_mfi(struct megasas_instance *instance)
3870 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
3872 if (instance->reply_queue)
3873 pci_free_consistent(instance->pdev, reply_q_sz,
3874 instance->reply_queue, instance->reply_queue_h);
3876 megasas_free_cmds(instance);
3878 iounmap(instance->reg_set);
3880 pci_release_selected_regions(instance->pdev, instance->bar);
3884 * megasas_get_seq_num - Gets latest event sequence numbers
3885 * @instance: Adapter soft state
3886 * @eli: FW event log sequence numbers information
3888 * FW maintains a log of all events in a non-volatile area. Upper layers would
3889 * usually find out the latest sequence number of the events, the seq number at
3890 * the boot etc. They would "read" all the events below the latest seq number
3891 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
3892 * number), they would subsribe to AEN (asynchronous event notification) and
3893 * wait for the events to happen.
3896 megasas_get_seq_num(struct megasas_instance *instance,
3897 struct megasas_evt_log_info *eli)
3899 struct megasas_cmd *cmd;
3900 struct megasas_dcmd_frame *dcmd;
3901 struct megasas_evt_log_info *el_info;
3902 dma_addr_t el_info_h = 0;
3904 cmd = megasas_get_cmd(instance);
3910 dcmd = &cmd->frame->dcmd;
3911 el_info = pci_alloc_consistent(instance->pdev,
3912 sizeof(struct megasas_evt_log_info),
3916 megasas_return_cmd(instance, cmd);
3920 memset(el_info, 0, sizeof(*el_info));
3921 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3923 dcmd->cmd = MFI_CMD_DCMD;
3924 dcmd->cmd_status = 0x0;
3925 dcmd->sge_count = 1;
3926 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
3929 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
3930 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
3931 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(el_info_h);
3932 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_log_info));
3934 megasas_issue_blocked_cmd(instance, cmd);
3937 * Copy the data back into callers buffer
3939 eli->newest_seq_num = le32_to_cpu(el_info->newest_seq_num);
3940 eli->oldest_seq_num = le32_to_cpu(el_info->oldest_seq_num);
3941 eli->clear_seq_num = le32_to_cpu(el_info->clear_seq_num);
3942 eli->shutdown_seq_num = le32_to_cpu(el_info->shutdown_seq_num);
3943 eli->boot_seq_num = le32_to_cpu(el_info->boot_seq_num);
3945 pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info),
3946 el_info, el_info_h);
3948 megasas_return_cmd(instance, cmd);
3954 * megasas_register_aen - Registers for asynchronous event notification
3955 * @instance: Adapter soft state
3956 * @seq_num: The starting sequence number
3957 * @class_locale: Class of the event
3959 * This function subscribes for AEN for events beyond the @seq_num. It requests
3960 * to be notified if and only if the event is of type @class_locale
3963 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
3964 u32 class_locale_word)
3967 struct megasas_cmd *cmd;
3968 struct megasas_dcmd_frame *dcmd;
3969 union megasas_evt_class_locale curr_aen;
3970 union megasas_evt_class_locale prev_aen;
3973 * If there an AEN pending already (aen_cmd), check if the
3974 * class_locale of that pending AEN is inclusive of the new
3975 * AEN request we currently have. If it is, then we don't have
3976 * to do anything. In other words, whichever events the current
3977 * AEN request is subscribing to, have already been subscribed
3980 * If the old_cmd is _not_ inclusive, then we have to abort
3981 * that command, form a class_locale that is superset of both
3982 * old and current and re-issue to the FW
3985 curr_aen.word = class_locale_word;
3987 if (instance->aen_cmd) {
3989 prev_aen.word = instance->aen_cmd->frame->dcmd.mbox.w[1];
3990 prev_aen.members.locale = le16_to_cpu(prev_aen.members.locale);
3993 * A class whose enum value is smaller is inclusive of all
3994 * higher values. If a PROGRESS (= -1) was previously
3995 * registered, then a new registration requests for higher
3996 * classes need not be sent to FW. They are automatically
3999 * Locale numbers don't have such hierarchy. They are bitmap
4002 if ((prev_aen.members.class <= curr_aen.members.class) &&
4003 !((prev_aen.members.locale & curr_aen.members.locale) ^
4004 curr_aen.members.locale)) {
4006 * Previously issued event registration includes
4007 * current request. Nothing to do.
4011 curr_aen.members.locale |= prev_aen.members.locale;
4013 if (prev_aen.members.class < curr_aen.members.class)
4014 curr_aen.members.class = prev_aen.members.class;
4016 instance->aen_cmd->abort_aen = 1;
4017 ret_val = megasas_issue_blocked_abort_cmd(instance,
4022 printk(KERN_DEBUG "megasas: Failed to abort "
4023 "previous AEN command\n");
4029 cmd = megasas_get_cmd(instance);
4034 dcmd = &cmd->frame->dcmd;
4036 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
4039 * Prepare DCMD for aen registration
4041 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4043 dcmd->cmd = MFI_CMD_DCMD;
4044 dcmd->cmd_status = 0x0;
4045 dcmd->sge_count = 1;
4046 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4049 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
4050 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
4051 dcmd->mbox.w[0] = cpu_to_le32(seq_num);
4052 instance->last_seq_num = seq_num;
4053 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
4054 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->evt_detail_h);
4055 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_detail));
4057 if (instance->aen_cmd != NULL) {
4058 megasas_return_cmd(instance, cmd);
4063 * Store reference to the cmd used to register for AEN. When an
4064 * application wants us to register for AEN, we have to abort this
4065 * cmd and re-register with a new EVENT LOCALE supplied by that app
4067 instance->aen_cmd = cmd;
4070 * Issue the aen registration frame
4072 instance->instancet->issue_dcmd(instance, cmd);
4078 * megasas_start_aen - Subscribes to AEN during driver load time
4079 * @instance: Adapter soft state
4081 static int megasas_start_aen(struct megasas_instance *instance)
4083 struct megasas_evt_log_info eli;
4084 union megasas_evt_class_locale class_locale;
4087 * Get the latest sequence number from FW
4089 memset(&eli, 0, sizeof(eli));
4091 if (megasas_get_seq_num(instance, &eli))
4095 * Register AEN with FW for latest sequence number plus 1
4097 class_locale.members.reserved = 0;
4098 class_locale.members.locale = MR_EVT_LOCALE_ALL;
4099 class_locale.members.class = MR_EVT_CLASS_DEBUG;
4101 return megasas_register_aen(instance,
4102 eli.newest_seq_num + 1,
4107 * megasas_io_attach - Attaches this driver to SCSI mid-layer
4108 * @instance: Adapter soft state
4110 static int megasas_io_attach(struct megasas_instance *instance)
4112 struct Scsi_Host *host = instance->host;
4115 * Export parameters required by SCSI mid-layer
4117 host->irq = instance->pdev->irq;
4118 host->unique_id = instance->unique_id;
4119 if (instance->is_imr) {
4121 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
4124 instance->max_fw_cmds - MEGASAS_INT_CMDS;
4125 host->this_id = instance->init_id;
4126 host->sg_tablesize = instance->max_num_sge;
4128 if (instance->fw_support_ieee)
4129 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
4132 * Check if the module parameter value for max_sectors can be used
4134 if (max_sectors && max_sectors < instance->max_sectors_per_req)
4135 instance->max_sectors_per_req = max_sectors;
4138 if (((instance->pdev->device ==
4139 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
4140 (instance->pdev->device ==
4141 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
4142 (max_sectors <= MEGASAS_MAX_SECTORS)) {
4143 instance->max_sectors_per_req = max_sectors;
4145 printk(KERN_INFO "megasas: max_sectors should be > 0"
4146 "and <= %d (or < 1MB for GEN2 controller)\n",
4147 instance->max_sectors_per_req);
4152 host->max_sectors = instance->max_sectors_per_req;
4153 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
4154 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
4155 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
4156 host->max_lun = MEGASAS_MAX_LUN;
4157 host->max_cmd_len = 16;
4159 /* Fusion only supports host reset */
4160 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
4161 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
4162 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
4163 host->hostt->eh_device_reset_handler = NULL;
4164 host->hostt->eh_bus_reset_handler = NULL;
4168 * Notify the mid-layer about the new controller
4170 if (scsi_add_host(host, &instance->pdev->dev)) {
4171 printk(KERN_DEBUG "megasas: scsi_add_host failed\n");
4176 * Trigger SCSI to scan our drives
4178 scsi_scan_host(host);
4183 megasas_set_dma_mask(struct pci_dev *pdev)
4186 * All our contollers are capable of performing 64-bit DMA
4189 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) {
4191 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
4192 goto fail_set_dma_mask;
4195 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
4196 goto fail_set_dma_mask;
4206 * megasas_probe_one - PCI hotplug entry point
4207 * @pdev: PCI device structure
4208 * @id: PCI ids of supported hotplugged adapter
4210 static int megasas_probe_one(struct pci_dev *pdev,
4211 const struct pci_device_id *id)
4213 int rval, pos, i, j;
4214 struct Scsi_Host *host;
4215 struct megasas_instance *instance;
4218 /* Reset MSI-X in the kdump kernel */
4219 if (reset_devices) {
4220 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
4222 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
4224 if (control & PCI_MSIX_FLAGS_ENABLE) {
4225 dev_info(&pdev->dev, "resetting MSI-X\n");
4226 pci_write_config_word(pdev,
4227 pos + PCI_MSIX_FLAGS,
4229 ~PCI_MSIX_FLAGS_ENABLE);
4235 * Announce PCI information
4237 printk(KERN_INFO "megasas: %#4.04x:%#4.04x:%#4.04x:%#4.04x: ",
4238 pdev->vendor, pdev->device, pdev->subsystem_vendor,
4239 pdev->subsystem_device);
4241 printk("bus %d:slot %d:func %d\n",
4242 pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));
4245 * PCI prepping: enable device set bus mastering and dma mask
4247 rval = pci_enable_device_mem(pdev);
4253 pci_set_master(pdev);
4255 if (megasas_set_dma_mask(pdev))
4256 goto fail_set_dma_mask;
4258 host = scsi_host_alloc(&megasas_template,
4259 sizeof(struct megasas_instance));
4262 printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n");
4263 goto fail_alloc_instance;
4266 instance = (struct megasas_instance *)host->hostdata;
4267 memset(instance, 0, sizeof(*instance));
4268 atomic_set( &instance->fw_reset_no_pci_access, 0 );
4269 instance->pdev = pdev;
4271 switch (instance->pdev->device) {
4272 case PCI_DEVICE_ID_LSI_FUSION:
4273 case PCI_DEVICE_ID_LSI_INVADER:
4274 case PCI_DEVICE_ID_LSI_FURY:
4276 struct fusion_context *fusion;
4278 instance->ctrl_context =
4279 kzalloc(sizeof(struct fusion_context), GFP_KERNEL);
4280 if (!instance->ctrl_context) {
4281 printk(KERN_DEBUG "megasas: Failed to allocate "
4282 "memory for Fusion context info\n");
4283 goto fail_alloc_dma_buf;
4285 fusion = instance->ctrl_context;
4286 INIT_LIST_HEAD(&fusion->cmd_pool);
4287 spin_lock_init(&fusion->cmd_pool_lock);
4290 default: /* For all other supported controllers */
4292 instance->producer =
4293 pci_alloc_consistent(pdev, sizeof(u32),
4294 &instance->producer_h);
4295 instance->consumer =
4296 pci_alloc_consistent(pdev, sizeof(u32),
4297 &instance->consumer_h);
4299 if (!instance->producer || !instance->consumer) {
4300 printk(KERN_DEBUG "megasas: Failed to allocate"
4301 "memory for producer, consumer\n");
4302 goto fail_alloc_dma_buf;
4305 *instance->producer = 0;
4306 *instance->consumer = 0;
4310 megasas_poll_wait_aen = 0;
4311 instance->flag_ieee = 0;
4312 instance->ev = NULL;
4313 instance->issuepend_done = 1;
4314 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
4315 instance->is_imr = 0;
4316 megasas_poll_wait_aen = 0;
4318 instance->evt_detail = pci_alloc_consistent(pdev,
4320 megasas_evt_detail),
4321 &instance->evt_detail_h);
4323 if (!instance->evt_detail) {
4324 printk(KERN_DEBUG "megasas: Failed to allocate memory for "
4325 "event detail structure\n");
4326 goto fail_alloc_dma_buf;
4330 * Initialize locks and queues
4332 INIT_LIST_HEAD(&instance->cmd_pool);
4333 INIT_LIST_HEAD(&instance->internal_reset_pending_q);
4335 atomic_set(&instance->fw_outstanding,0);
4337 init_waitqueue_head(&instance->int_cmd_wait_q);
4338 init_waitqueue_head(&instance->abort_cmd_wait_q);
4340 spin_lock_init(&instance->cmd_pool_lock);
4341 spin_lock_init(&instance->hba_lock);
4342 spin_lock_init(&instance->completion_lock);
4344 mutex_init(&instance->aen_mutex);
4345 mutex_init(&instance->reset_mutex);
4348 * Initialize PCI related and misc parameters
4350 instance->host = host;
4351 instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
4352 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
4354 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4355 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
4356 instance->flag_ieee = 1;
4357 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
4359 sema_init(&instance->ioctl_sem, MEGASAS_INT_CMDS);
4361 megasas_dbg_lvl = 0;
4363 instance->unload = 1;
4364 instance->last_time = 0;
4365 instance->disableOnlineCtrlReset = 1;
4366 instance->UnevenSpanSupport = 0;
4368 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
4369 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
4370 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
4371 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
4373 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
4376 * Initialize MFI Firmware
4378 if (megasas_init_fw(instance))
4385 if (instance->msix_vectors) {
4386 for (i = 0 ; i < instance->msix_vectors; i++) {
4387 instance->irq_context[i].instance = instance;
4388 instance->irq_context[i].MSIxIndex = i;
4389 if (request_irq(instance->msixentry[i].vector,
4390 instance->instancet->service_isr, 0,
4392 &instance->irq_context[i])) {
4393 printk(KERN_DEBUG "megasas: Failed to "
4394 "register IRQ for vector %d.\n", i);
4395 for (j = 0 ; j < i ; j++)
4397 instance->msixentry[j].vector,
4398 &instance->irq_context[j]);
4399 /* Retry irq register for IO_APIC */
4400 instance->msix_vectors = 0;
4401 goto retry_irq_register;
4405 instance->irq_context[0].instance = instance;
4406 instance->irq_context[0].MSIxIndex = 0;
4407 if (request_irq(pdev->irq, instance->instancet->service_isr,
4408 IRQF_SHARED, "megasas",
4409 &instance->irq_context[0])) {
4410 printk(KERN_DEBUG "megasas: Failed to register IRQ\n");
4415 instance->instancet->enable_intr(instance);
4418 * Store instance in PCI softstate
4420 pci_set_drvdata(pdev, instance);
4423 * Add this controller to megasas_mgmt_info structure so that it
4424 * can be exported to management applications
4426 megasas_mgmt_info.count++;
4427 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
4428 megasas_mgmt_info.max_index++;
4431 * Register with SCSI mid-layer
4433 if (megasas_io_attach(instance))
4434 goto fail_io_attach;
4436 instance->unload = 0;
4439 * Initiate AEN (Asynchronous Event Notification)
4441 if (megasas_start_aen(instance)) {
4442 printk(KERN_DEBUG "megasas: start aen failed\n");
4443 goto fail_start_aen;
4450 megasas_mgmt_info.count--;
4451 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
4452 megasas_mgmt_info.max_index--;
4454 instance->instancet->disable_intr(instance);
4455 if (instance->msix_vectors)
4456 for (i = 0 ; i < instance->msix_vectors; i++)
4457 free_irq(instance->msixentry[i].vector,
4458 &instance->irq_context[i]);
4460 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4462 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
4463 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
4464 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
4465 megasas_release_fusion(instance);
4467 megasas_release_mfi(instance);
4469 if (instance->msix_vectors)
4470 pci_disable_msix(instance->pdev);
4472 if (instance->evt_detail)
4473 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
4474 instance->evt_detail,
4475 instance->evt_detail_h);
4477 if (instance->producer)
4478 pci_free_consistent(pdev, sizeof(u32), instance->producer,
4479 instance->producer_h);
4480 if (instance->consumer)
4481 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
4482 instance->consumer_h);
4483 scsi_host_put(host);
4485 fail_alloc_instance:
4487 pci_disable_device(pdev);
4493 * megasas_flush_cache - Requests FW to flush all its caches
4494 * @instance: Adapter soft state
4496 static void megasas_flush_cache(struct megasas_instance *instance)
4498 struct megasas_cmd *cmd;
4499 struct megasas_dcmd_frame *dcmd;
4501 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
4504 cmd = megasas_get_cmd(instance);
4509 dcmd = &cmd->frame->dcmd;
4511 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4513 dcmd->cmd = MFI_CMD_DCMD;
4514 dcmd->cmd_status = 0x0;
4515 dcmd->sge_count = 0;
4516 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
4519 dcmd->data_xfer_len = 0;
4520 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
4521 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
4523 megasas_issue_blocked_cmd(instance, cmd);
4525 megasas_return_cmd(instance, cmd);
4531 * megasas_shutdown_controller - Instructs FW to shutdown the controller
4532 * @instance: Adapter soft state
4533 * @opcode: Shutdown/Hibernate
4535 static void megasas_shutdown_controller(struct megasas_instance *instance,
4538 struct megasas_cmd *cmd;
4539 struct megasas_dcmd_frame *dcmd;
4541 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
4544 cmd = megasas_get_cmd(instance);
4549 if (instance->aen_cmd)
4550 megasas_issue_blocked_abort_cmd(instance, instance->aen_cmd);
4551 if (instance->map_update_cmd)
4552 megasas_issue_blocked_abort_cmd(instance,
4553 instance->map_update_cmd);
4554 dcmd = &cmd->frame->dcmd;
4556 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4558 dcmd->cmd = MFI_CMD_DCMD;
4559 dcmd->cmd_status = 0x0;
4560 dcmd->sge_count = 0;
4561 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
4564 dcmd->data_xfer_len = 0;
4565 dcmd->opcode = cpu_to_le32(opcode);
4567 megasas_issue_blocked_cmd(instance, cmd);
4569 megasas_return_cmd(instance, cmd);
4576 * megasas_suspend - driver suspend entry point
4577 * @pdev: PCI device structure
4578 * @state: PCI power state to suspend routine
4581 megasas_suspend(struct pci_dev *pdev, pm_message_t state)
4583 struct Scsi_Host *host;
4584 struct megasas_instance *instance;
4587 instance = pci_get_drvdata(pdev);
4588 host = instance->host;
4589 instance->unload = 1;
4591 megasas_flush_cache(instance);
4592 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
4594 /* cancel the delayed work if this work still in queue */
4595 if (instance->ev != NULL) {
4596 struct megasas_aen_event *ev = instance->ev;
4597 cancel_delayed_work_sync(&ev->hotplug_work);
4598 instance->ev = NULL;
4601 tasklet_kill(&instance->isr_tasklet);
4603 pci_set_drvdata(instance->pdev, instance);
4604 instance->instancet->disable_intr(instance);
4606 if (instance->msix_vectors)
4607 for (i = 0 ; i < instance->msix_vectors; i++)
4608 free_irq(instance->msixentry[i].vector,
4609 &instance->irq_context[i]);
4611 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4612 if (instance->msix_vectors)
4613 pci_disable_msix(instance->pdev);
4615 pci_save_state(pdev);
4616 pci_disable_device(pdev);
4618 pci_set_power_state(pdev, pci_choose_state(pdev, state));
4624 * megasas_resume- driver resume entry point
4625 * @pdev: PCI device structure
4628 megasas_resume(struct pci_dev *pdev)
4631 struct Scsi_Host *host;
4632 struct megasas_instance *instance;
4634 instance = pci_get_drvdata(pdev);
4635 host = instance->host;
4636 pci_set_power_state(pdev, PCI_D0);
4637 pci_enable_wake(pdev, PCI_D0, 0);
4638 pci_restore_state(pdev);
4641 * PCI prepping: enable device set bus mastering and dma mask
4643 rval = pci_enable_device_mem(pdev);
4646 printk(KERN_ERR "megasas: Enable device failed\n");
4650 pci_set_master(pdev);
4652 if (megasas_set_dma_mask(pdev))
4653 goto fail_set_dma_mask;
4656 * Initialize MFI Firmware
4659 atomic_set(&instance->fw_outstanding, 0);
4662 * We expect the FW state to be READY
4664 if (megasas_transition_to_ready(instance, 0))
4665 goto fail_ready_state;
4667 /* Now re-enable MSI-X */
4668 if (instance->msix_vectors)
4669 pci_enable_msix(instance->pdev, instance->msixentry,
4670 instance->msix_vectors);
4672 switch (instance->pdev->device) {
4673 case PCI_DEVICE_ID_LSI_FUSION:
4674 case PCI_DEVICE_ID_LSI_INVADER:
4675 case PCI_DEVICE_ID_LSI_FURY:
4677 megasas_reset_reply_desc(instance);
4678 if (megasas_ioc_init_fusion(instance)) {
4679 megasas_free_cmds(instance);
4680 megasas_free_cmds_fusion(instance);
4683 if (!megasas_get_map_info(instance))
4684 megasas_sync_map_info(instance);
4688 *instance->producer = 0;
4689 *instance->consumer = 0;
4690 if (megasas_issue_init_mfi(instance))
4695 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
4696 (unsigned long)instance);
4701 if (instance->msix_vectors) {
4702 for (i = 0 ; i < instance->msix_vectors; i++) {
4703 instance->irq_context[i].instance = instance;
4704 instance->irq_context[i].MSIxIndex = i;
4705 if (request_irq(instance->msixentry[i].vector,
4706 instance->instancet->service_isr, 0,
4708 &instance->irq_context[i])) {
4709 printk(KERN_DEBUG "megasas: Failed to "
4710 "register IRQ for vector %d.\n", i);
4711 for (j = 0 ; j < i ; j++)
4713 instance->msixentry[j].vector,
4714 &instance->irq_context[j]);
4719 instance->irq_context[0].instance = instance;
4720 instance->irq_context[0].MSIxIndex = 0;
4721 if (request_irq(pdev->irq, instance->instancet->service_isr,
4722 IRQF_SHARED, "megasas",
4723 &instance->irq_context[0])) {
4724 printk(KERN_DEBUG "megasas: Failed to register IRQ\n");
4729 instance->instancet->enable_intr(instance);
4730 instance->unload = 0;
4733 * Initiate AEN (Asynchronous Event Notification)
4735 if (megasas_start_aen(instance))
4736 printk(KERN_ERR "megasas: Start AEN failed\n");
4742 if (instance->evt_detail)
4743 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
4744 instance->evt_detail,
4745 instance->evt_detail_h);
4747 if (instance->producer)
4748 pci_free_consistent(pdev, sizeof(u32), instance->producer,
4749 instance->producer_h);
4750 if (instance->consumer)
4751 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
4752 instance->consumer_h);
4753 scsi_host_put(host);
4758 pci_disable_device(pdev);
4763 #define megasas_suspend NULL
4764 #define megasas_resume NULL
4768 * megasas_detach_one - PCI hot"un"plug entry point
4769 * @pdev: PCI device structure
4771 static void megasas_detach_one(struct pci_dev *pdev)
4774 struct Scsi_Host *host;
4775 struct megasas_instance *instance;
4776 struct fusion_context *fusion;
4778 instance = pci_get_drvdata(pdev);
4779 instance->unload = 1;
4780 host = instance->host;
4781 fusion = instance->ctrl_context;
4783 scsi_remove_host(instance->host);
4784 megasas_flush_cache(instance);
4785 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
4787 /* cancel the delayed work if this work still in queue*/
4788 if (instance->ev != NULL) {
4789 struct megasas_aen_event *ev = instance->ev;
4790 cancel_delayed_work_sync(&ev->hotplug_work);
4791 instance->ev = NULL;
4794 tasklet_kill(&instance->isr_tasklet);
4797 * Take the instance off the instance array. Note that we will not
4798 * decrement the max_index. We let this array be sparse array
4800 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
4801 if (megasas_mgmt_info.instance[i] == instance) {
4802 megasas_mgmt_info.count--;
4803 megasas_mgmt_info.instance[i] = NULL;
4809 instance->instancet->disable_intr(instance);
4811 if (instance->msix_vectors)
4812 for (i = 0 ; i < instance->msix_vectors; i++)
4813 free_irq(instance->msixentry[i].vector,
4814 &instance->irq_context[i]);
4816 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4817 if (instance->msix_vectors)
4818 pci_disable_msix(instance->pdev);
4820 switch (instance->pdev->device) {
4821 case PCI_DEVICE_ID_LSI_FUSION:
4822 case PCI_DEVICE_ID_LSI_INVADER:
4823 case PCI_DEVICE_ID_LSI_FURY:
4824 megasas_release_fusion(instance);
4825 for (i = 0; i < 2 ; i++)
4826 if (fusion->ld_map[i])
4827 dma_free_coherent(&instance->pdev->dev,
4832 kfree(instance->ctrl_context);
4835 megasas_release_mfi(instance);
4836 pci_free_consistent(pdev, sizeof(u32),
4838 instance->producer_h);
4839 pci_free_consistent(pdev, sizeof(u32),
4841 instance->consumer_h);
4845 if (instance->evt_detail)
4846 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
4847 instance->evt_detail, instance->evt_detail_h);
4848 scsi_host_put(host);
4850 pci_disable_device(pdev);
4856 * megasas_shutdown - Shutdown entry point
4857 * @device: Generic device structure
4859 static void megasas_shutdown(struct pci_dev *pdev)
4862 struct megasas_instance *instance = pci_get_drvdata(pdev);
4864 instance->unload = 1;
4865 megasas_flush_cache(instance);
4866 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
4867 instance->instancet->disable_intr(instance);
4868 if (instance->msix_vectors)
4869 for (i = 0 ; i < instance->msix_vectors; i++)
4870 free_irq(instance->msixentry[i].vector,
4871 &instance->irq_context[i]);
4873 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4874 if (instance->msix_vectors)
4875 pci_disable_msix(instance->pdev);
4879 * megasas_mgmt_open - char node "open" entry point
4881 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
4884 * Allow only those users with admin rights
4886 if (!capable(CAP_SYS_ADMIN))
4893 * megasas_mgmt_fasync - Async notifier registration from applications
4895 * This function adds the calling process to a driver global queue. When an
4896 * event occurs, SIGIO will be sent to all processes in this queue.
4898 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
4902 mutex_lock(&megasas_async_queue_mutex);
4904 rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
4906 mutex_unlock(&megasas_async_queue_mutex);
4909 /* For sanity check when we get ioctl */
4910 filep->private_data = filep;
4914 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
4920 * megasas_mgmt_poll - char node "poll" entry point
4922 static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait)
4925 unsigned long flags;
4926 poll_wait(file, &megasas_poll_wait, wait);
4927 spin_lock_irqsave(&poll_aen_lock, flags);
4928 if (megasas_poll_wait_aen)
4929 mask = (POLLIN | POLLRDNORM);
4932 spin_unlock_irqrestore(&poll_aen_lock, flags);
4937 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
4938 * @instance: Adapter soft state
4939 * @argp: User's ioctl packet
4942 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
4943 struct megasas_iocpacket __user * user_ioc,
4944 struct megasas_iocpacket *ioc)
4946 struct megasas_sge32 *kern_sge32;
4947 struct megasas_cmd *cmd;
4948 void *kbuff_arr[MAX_IOCTL_SGE];
4949 dma_addr_t buf_handle = 0;
4952 dma_addr_t sense_handle;
4953 unsigned long *sense_ptr;
4955 memset(kbuff_arr, 0, sizeof(kbuff_arr));
4957 if (ioc->sge_count > MAX_IOCTL_SGE) {
4958 printk(KERN_DEBUG "megasas: SGE count [%d] > max limit [%d]\n",
4959 ioc->sge_count, MAX_IOCTL_SGE);
4963 cmd = megasas_get_cmd(instance);
4965 printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n");
4970 * User's IOCTL packet has 2 frames (maximum). Copy those two
4971 * frames into our cmd's frames. cmd->frame's context will get
4972 * overwritten when we copy from user's frames. So set that value
4975 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
4976 cmd->frame->hdr.context = cpu_to_le32(cmd->index);
4977 cmd->frame->hdr.pad_0 = 0;
4978 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_IEEE |
4980 MFI_FRAME_SENSE64));
4983 * The management interface between applications and the fw uses
4984 * MFI frames. E.g, RAID configuration changes, LD property changes
4985 * etc are accomplishes through different kinds of MFI frames. The
4986 * driver needs to care only about substituting user buffers with
4987 * kernel buffers in SGLs. The location of SGL is embedded in the
4988 * struct iocpacket itself.
4990 kern_sge32 = (struct megasas_sge32 *)
4991 ((unsigned long)cmd->frame + ioc->sgl_off);
4994 * For each user buffer, create a mirror buffer and copy in
4996 for (i = 0; i < ioc->sge_count; i++) {
4997 if (!ioc->sgl[i].iov_len)
5000 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
5001 ioc->sgl[i].iov_len,
5002 &buf_handle, GFP_KERNEL);
5003 if (!kbuff_arr[i]) {
5004 printk(KERN_DEBUG "megasas: Failed to alloc "
5005 "kernel SGL buffer for IOCTL \n");
5011 * We don't change the dma_coherent_mask, so
5012 * pci_alloc_consistent only returns 32bit addresses
5014 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
5015 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
5018 * We created a kernel buffer corresponding to the
5019 * user buffer. Now copy in from the user buffer
5021 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
5022 (u32) (ioc->sgl[i].iov_len))) {
5028 if (ioc->sense_len) {
5029 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
5030 &sense_handle, GFP_KERNEL);
5037 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
5038 *sense_ptr = cpu_to_le32(sense_handle);
5042 * Set the sync_cmd flag so that the ISR knows not to complete this
5043 * cmd to the SCSI mid-layer
5046 megasas_issue_blocked_cmd(instance, cmd);
5050 * copy out the kernel buffers to user buffers
5052 for (i = 0; i < ioc->sge_count; i++) {
5053 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
5054 ioc->sgl[i].iov_len)) {
5061 * copy out the sense
5063 if (ioc->sense_len) {
5065 * sense_ptr points to the location that has the user
5066 * sense buffer address
5068 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
5071 if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)),
5072 sense, ioc->sense_len)) {
5073 printk(KERN_ERR "megasas: Failed to copy out to user "
5081 * copy the status codes returned by the fw
5083 if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
5084 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
5085 printk(KERN_DEBUG "megasas: Error copying out cmd_status\n");
5091 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
5092 sense, sense_handle);
5095 for (i = 0; i < ioc->sge_count; i++) {
5097 dma_free_coherent(&instance->pdev->dev,
5098 le32_to_cpu(kern_sge32[i].length),
5100 le32_to_cpu(kern_sge32[i].phys_addr));
5103 megasas_return_cmd(instance, cmd);
5107 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
5109 struct megasas_iocpacket __user *user_ioc =
5110 (struct megasas_iocpacket __user *)arg;
5111 struct megasas_iocpacket *ioc;
5112 struct megasas_instance *instance;
5115 unsigned long flags;
5116 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
5118 ioc = kmalloc(sizeof(*ioc), GFP_KERNEL);
5122 if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) {
5127 instance = megasas_lookup_instance(ioc->host_no);
5133 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
5134 printk(KERN_ERR "Controller in crit error\n");
5139 if (instance->unload == 1) {
5145 * We will allow only MEGASAS_INT_CMDS number of parallel ioctl cmds
5147 if (down_interruptible(&instance->ioctl_sem)) {
5148 error = -ERESTARTSYS;
5152 for (i = 0; i < wait_time; i++) {
5154 spin_lock_irqsave(&instance->hba_lock, flags);
5155 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
5156 spin_unlock_irqrestore(&instance->hba_lock, flags);
5159 spin_unlock_irqrestore(&instance->hba_lock, flags);
5161 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
5162 printk(KERN_NOTICE "megasas: waiting"
5163 "for controller reset to finish\n");
5169 spin_lock_irqsave(&instance->hba_lock, flags);
5170 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
5171 spin_unlock_irqrestore(&instance->hba_lock, flags);
5173 printk(KERN_ERR "megaraid_sas: timed out while"
5174 "waiting for HBA to recover\n");
5178 spin_unlock_irqrestore(&instance->hba_lock, flags);
5180 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
5182 up(&instance->ioctl_sem);
5189 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
5191 struct megasas_instance *instance;
5192 struct megasas_aen aen;
5195 unsigned long flags;
5196 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
5198 if (file->private_data != file) {
5199 printk(KERN_DEBUG "megasas: fasync_helper was not "
5204 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
5207 instance = megasas_lookup_instance(aen.host_no);
5212 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
5216 if (instance->unload == 1) {
5220 for (i = 0; i < wait_time; i++) {
5222 spin_lock_irqsave(&instance->hba_lock, flags);
5223 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
5224 spin_unlock_irqrestore(&instance->hba_lock,
5229 spin_unlock_irqrestore(&instance->hba_lock, flags);
5231 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
5232 printk(KERN_NOTICE "megasas: waiting for"
5233 "controller reset to finish\n");
5239 spin_lock_irqsave(&instance->hba_lock, flags);
5240 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
5241 spin_unlock_irqrestore(&instance->hba_lock, flags);
5242 printk(KERN_ERR "megaraid_sas: timed out while waiting"
5243 "for HBA to recover.\n");
5246 spin_unlock_irqrestore(&instance->hba_lock, flags);
5248 mutex_lock(&instance->aen_mutex);
5249 error = megasas_register_aen(instance, aen.seq_num,
5250 aen.class_locale_word);
5251 mutex_unlock(&instance->aen_mutex);
5256 * megasas_mgmt_ioctl - char node ioctl entry point
5259 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
5262 case MEGASAS_IOC_FIRMWARE:
5263 return megasas_mgmt_ioctl_fw(file, arg);
5265 case MEGASAS_IOC_GET_AEN:
5266 return megasas_mgmt_ioctl_aen(file, arg);
5272 #ifdef CONFIG_COMPAT
5273 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
5275 struct compat_megasas_iocpacket __user *cioc =
5276 (struct compat_megasas_iocpacket __user *)arg;
5277 struct megasas_iocpacket __user *ioc =
5278 compat_alloc_user_space(sizeof(struct megasas_iocpacket));
5283 if (clear_user(ioc, sizeof(*ioc)))
5286 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
5287 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
5288 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
5289 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
5290 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
5291 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
5295 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
5296 * sense_len is not null, so prepare the 64bit value under
5297 * the same condition.
5299 if (ioc->sense_len) {
5300 void __user **sense_ioc_ptr =
5301 (void __user **)(ioc->frame.raw + ioc->sense_off);
5302 compat_uptr_t *sense_cioc_ptr =
5303 (compat_uptr_t *)(cioc->frame.raw + cioc->sense_off);
5304 if (get_user(ptr, sense_cioc_ptr) ||
5305 put_user(compat_ptr(ptr), sense_ioc_ptr))
5309 for (i = 0; i < MAX_IOCTL_SGE; i++) {
5310 if (get_user(ptr, &cioc->sgl[i].iov_base) ||
5311 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
5312 copy_in_user(&ioc->sgl[i].iov_len,
5313 &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
5317 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);
5319 if (copy_in_user(&cioc->frame.hdr.cmd_status,
5320 &ioc->frame.hdr.cmd_status, sizeof(u8))) {
5321 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
5328 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
5332 case MEGASAS_IOC_FIRMWARE32:
5333 return megasas_mgmt_compat_ioctl_fw(file, arg);
5334 case MEGASAS_IOC_GET_AEN:
5335 return megasas_mgmt_ioctl_aen(file, arg);
5343 * File operations structure for management interface
5345 static const struct file_operations megasas_mgmt_fops = {
5346 .owner = THIS_MODULE,
5347 .open = megasas_mgmt_open,
5348 .fasync = megasas_mgmt_fasync,
5349 .unlocked_ioctl = megasas_mgmt_ioctl,
5350 .poll = megasas_mgmt_poll,
5351 #ifdef CONFIG_COMPAT
5352 .compat_ioctl = megasas_mgmt_compat_ioctl,
5354 .llseek = noop_llseek,
5358 * PCI hotplug support registration structure
5360 static struct pci_driver megasas_pci_driver = {
5362 .name = "megaraid_sas",
5363 .id_table = megasas_pci_table,
5364 .probe = megasas_probe_one,
5365 .remove = megasas_detach_one,
5366 .suspend = megasas_suspend,
5367 .resume = megasas_resume,
5368 .shutdown = megasas_shutdown,
5372 * Sysfs driver attributes
5374 static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf)
5376 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
5380 static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL);
5383 megasas_sysfs_show_release_date(struct device_driver *dd, char *buf)
5385 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
5389 static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date,
5393 megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf)
5395 return sprintf(buf, "%u\n", support_poll_for_event);
5398 static DRIVER_ATTR(support_poll_for_event, S_IRUGO,
5399 megasas_sysfs_show_support_poll_for_event, NULL);
5402 megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf)
5404 return sprintf(buf, "%u\n", support_device_change);
5407 static DRIVER_ATTR(support_device_change, S_IRUGO,
5408 megasas_sysfs_show_support_device_change, NULL);
5411 megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf)
5413 return sprintf(buf, "%u\n", megasas_dbg_lvl);
5417 megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count)
5420 if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){
5421 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
5427 static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl,
5428 megasas_sysfs_set_dbg_lvl);
5431 megasas_aen_polling(struct work_struct *work)
5433 struct megasas_aen_event *ev =
5434 container_of(work, struct megasas_aen_event, hotplug_work.work);
5435 struct megasas_instance *instance = ev->instance;
5436 union megasas_evt_class_locale class_locale;
5437 struct Scsi_Host *host;
5438 struct scsi_device *sdev1;
5441 int i, j, doscan = 0;
5446 printk(KERN_ERR "invalid instance!\n");
5450 instance->ev = NULL;
5451 host = instance->host;
5452 if (instance->evt_detail) {
5454 switch (le32_to_cpu(instance->evt_detail->code)) {
5455 case MR_EVT_PD_INSERTED:
5456 if (megasas_get_pd_list(instance) == 0) {
5457 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
5459 j < MEGASAS_MAX_DEV_PER_CHANNEL;
5463 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5466 scsi_device_lookup(host, i, j, 0);
5468 if (instance->pd_list[pd_index].driveState
5469 == MR_PD_STATE_SYSTEM) {
5471 scsi_add_device(host, i, j, 0);
5475 scsi_device_put(sdev1);
5483 case MR_EVT_PD_REMOVED:
5484 if (megasas_get_pd_list(instance) == 0) {
5485 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
5487 j < MEGASAS_MAX_DEV_PER_CHANNEL;
5491 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5494 scsi_device_lookup(host, i, j, 0);
5496 if (instance->pd_list[pd_index].driveState
5497 == MR_PD_STATE_SYSTEM) {
5499 scsi_device_put(sdev1);
5503 scsi_remove_device(sdev1);
5504 scsi_device_put(sdev1);
5513 case MR_EVT_LD_OFFLINE:
5514 case MR_EVT_CFG_CLEARED:
5515 case MR_EVT_LD_DELETED:
5516 if (megasas_ld_list_query(instance,
5517 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
5518 megasas_get_ld_list(instance);
5519 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
5521 j < MEGASAS_MAX_DEV_PER_CHANNEL;
5525 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5527 sdev1 = scsi_device_lookup(host,
5528 MEGASAS_MAX_PD_CHANNELS + i,
5532 if (instance->ld_ids[ld_index] != 0xff) {
5534 scsi_device_put(sdev1);
5538 scsi_remove_device(sdev1);
5539 scsi_device_put(sdev1);
5546 case MR_EVT_LD_CREATED:
5547 if (megasas_ld_list_query(instance,
5548 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
5549 megasas_get_ld_list(instance);
5550 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
5552 j < MEGASAS_MAX_DEV_PER_CHANNEL;
5555 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5557 sdev1 = scsi_device_lookup(host,
5558 MEGASAS_MAX_PD_CHANNELS + i,
5561 if (instance->ld_ids[ld_index] !=
5564 scsi_add_device(host,
5565 MEGASAS_MAX_PD_CHANNELS + i,
5570 scsi_device_put(sdev1);
5576 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
5577 case MR_EVT_FOREIGN_CFG_IMPORTED:
5578 case MR_EVT_LD_STATE_CHANGE:
5586 printk(KERN_ERR "invalid evt_detail!\n");
5592 printk(KERN_INFO "scanning ...\n");
5593 megasas_get_pd_list(instance);
5594 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
5595 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
5596 pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j;
5597 sdev1 = scsi_device_lookup(host, i, j, 0);
5598 if (instance->pd_list[pd_index].driveState ==
5599 MR_PD_STATE_SYSTEM) {
5601 scsi_add_device(host, i, j, 0);
5604 scsi_device_put(sdev1);
5607 scsi_remove_device(sdev1);
5608 scsi_device_put(sdev1);
5614 if (megasas_ld_list_query(instance,
5615 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
5616 megasas_get_ld_list(instance);
5617 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
5618 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
5620 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5622 sdev1 = scsi_device_lookup(host,
5623 MEGASAS_MAX_PD_CHANNELS + i, j, 0);
5624 if (instance->ld_ids[ld_index] != 0xff) {
5626 scsi_add_device(host,
5627 MEGASAS_MAX_PD_CHANNELS + i,
5630 scsi_device_put(sdev1);
5634 scsi_remove_device(sdev1);
5635 scsi_device_put(sdev1);
5642 if ( instance->aen_cmd != NULL ) {
5647 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
5649 /* Register AEN with FW for latest sequence number plus 1 */
5650 class_locale.members.reserved = 0;
5651 class_locale.members.locale = MR_EVT_LOCALE_ALL;
5652 class_locale.members.class = MR_EVT_CLASS_DEBUG;
5653 mutex_lock(&instance->aen_mutex);
5654 error = megasas_register_aen(instance, seq_num,
5656 mutex_unlock(&instance->aen_mutex);
5659 printk(KERN_ERR "register aen failed error %x\n", error);
5665 * megasas_init - Driver load entry point
5667 static int __init megasas_init(void)
5672 * Announce driver version and other information
5674 printk(KERN_INFO "megasas: %s %s\n", MEGASAS_VERSION,
5675 MEGASAS_EXT_VERSION);
5677 spin_lock_init(&poll_aen_lock);
5679 support_poll_for_event = 2;
5680 support_device_change = 1;
5682 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
5685 * Register character device node
5687 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
5690 printk(KERN_DEBUG "megasas: failed to open device node\n");
5694 megasas_mgmt_majorno = rval;
5697 * Register ourselves as PCI hotplug module
5699 rval = pci_register_driver(&megasas_pci_driver);
5702 printk(KERN_DEBUG "megasas: PCI hotplug regisration failed \n");
5706 rval = driver_create_file(&megasas_pci_driver.driver,
5707 &driver_attr_version);
5709 goto err_dcf_attr_ver;
5710 rval = driver_create_file(&megasas_pci_driver.driver,
5711 &driver_attr_release_date);
5713 goto err_dcf_rel_date;
5715 rval = driver_create_file(&megasas_pci_driver.driver,
5716 &driver_attr_support_poll_for_event);
5718 goto err_dcf_support_poll_for_event;
5720 rval = driver_create_file(&megasas_pci_driver.driver,
5721 &driver_attr_dbg_lvl);
5723 goto err_dcf_dbg_lvl;
5724 rval = driver_create_file(&megasas_pci_driver.driver,
5725 &driver_attr_support_device_change);
5727 goto err_dcf_support_device_change;
5731 err_dcf_support_device_change:
5732 driver_remove_file(&megasas_pci_driver.driver,
5733 &driver_attr_dbg_lvl);
5735 driver_remove_file(&megasas_pci_driver.driver,
5736 &driver_attr_support_poll_for_event);
5738 err_dcf_support_poll_for_event:
5739 driver_remove_file(&megasas_pci_driver.driver,
5740 &driver_attr_release_date);
5743 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
5745 pci_unregister_driver(&megasas_pci_driver);
5747 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
5752 * megasas_exit - Driver unload entry point
5754 static void __exit megasas_exit(void)
5756 driver_remove_file(&megasas_pci_driver.driver,
5757 &driver_attr_dbg_lvl);
5758 driver_remove_file(&megasas_pci_driver.driver,
5759 &driver_attr_support_poll_for_event);
5760 driver_remove_file(&megasas_pci_driver.driver,
5761 &driver_attr_support_device_change);
5762 driver_remove_file(&megasas_pci_driver.driver,
5763 &driver_attr_release_date);
5764 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
5766 pci_unregister_driver(&megasas_pci_driver);
5767 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
5770 module_init(megasas_init);
5771 module_exit(megasas_exit);