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megaraid_sas : Move controller's queue depth calculation in adapter specific function
[mirror_ubuntu-artful-kernel.git] / drivers / scsi / megaraid / megaraid_sas_base.c
CommitLineData
c4a3e0a5 1/*
3f1530c1 2 * Linux MegaRAID driver for SAS based RAID controllers
c4a3e0a5 3 *
e399065b
SS		 4 * Copyright (c) 2003-2013 LSI Corporation
5 * Copyright (c) 2013-2014 Avago Technologies
c4a3e0a5 6 *
3f1530c1
AR		 7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
c4a3e0a5 11 *
3f1530c1
AR		 12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
c4a3e0a5 16 *
3f1530c1 17 * You should have received a copy of the GNU General Public License
e399065b 18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
c4a3e0a5 19 *
e399065b 20 * Authors: Avago Technologies
3f1530c1
AR		 21 * Sreenivas Bagalkote
22 * Sumant Patro
23 * Bo Yang
e399065b
SS		 24 * Adam Radford
25 * Kashyap Desai <kashyap.desai@avagotech.com>
26 * Sumit Saxena <sumit.saxena@avagotech.com>
c4a3e0a5 27 *
e399065b 28 * Send feedback to: megaraidlinux.pdl@avagotech.com
3f1530c1 29 *
e399065b
SS		 30 * Mail to: Avago Technologies, 350 West Trimble Road, Building 90,
31 * San Jose, California 95131
c4a3e0a5
BS		 32 */
33
34#include <linux/kernel.h>
35#include <linux/types.h>
36#include <linux/pci.h>
37#include <linux/list.h>
c4a3e0a5
BS		 38#include <linux/moduleparam.h>
39#include <linux/module.h>
40#include <linux/spinlock.h>
41#include <linux/interrupt.h>
42#include <linux/delay.h>
43#include <linux/uio.h>
5a0e3ad6 44#include <linux/slab.h>
c4a3e0a5 45#include <asm/uaccess.h>
43399236 46#include <linux/fs.h>
c4a3e0a5 47#include <linux/compat.h>
cf62a0a5 48#include <linux/blkdev.h>
0b950672 49#include <linux/mutex.h>
c3518837 50#include <linux/poll.h>
c4a3e0a5
BS		 51
52#include <scsi/scsi.h>
53#include <scsi/scsi_cmnd.h>
54#include <scsi/scsi_device.h>
55#include <scsi/scsi_host.h>
4bcde509 56#include <scsi/scsi_tcq.h>
9c915a8c 57#include "megaraid_sas_fusion.h"
c4a3e0a5
BS		 58#include "megaraid_sas.h"
59
1fd10685
YB		 60/*
61 * Number of sectors per IO command
62 * Will be set in megasas_init_mfi if user does not provide
63 */
64static unsigned int max_sectors;
65module_param_named(max_sectors, max_sectors, int, 0);
66MODULE_PARM_DESC(max_sectors,
67 "Maximum number of sectors per IO command");
68
80d9da98
AR		 69static int msix_disable;
70module_param(msix_disable, int, S_IRUGO);
71MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0");
72
079eaddf
AR		 73static unsigned int msix_vectors;
74module_param(msix_vectors, int, S_IRUGO);
75MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW");
76
229fe47c
AR		 77static int allow_vf_ioctls;
78module_param(allow_vf_ioctls, int, S_IRUGO);
79MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0");
80
ae09a6c1 81static unsigned int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH;
c5daa6a9
AR		 82module_param(throttlequeuedepth, int, S_IRUGO);
83MODULE_PARM_DESC(throttlequeuedepth,
84 "Adapter queue depth when throttled due to I/O timeout. Default: 16");
85
c007b8b2
AR		 86int resetwaittime = MEGASAS_RESET_WAIT_TIME;
87module_param(resetwaittime, int, S_IRUGO);
88MODULE_PARM_DESC(resetwaittime, "Wait time in seconds after I/O timeout "
89 "before resetting adapter. Default: 180");
90
ac95136a
SS		 91int smp_affinity_enable = 1;
92module_param(smp_affinity_enable, int, S_IRUGO);
93MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disbale Default: enable(1)");
94
c4a3e0a5
BS		 95MODULE_LICENSE("GPL");
96MODULE_VERSION(MEGASAS_VERSION);
3d6d174a 97MODULE_AUTHOR("megaraidlinux@lsi.com");
f28cd7cf 98MODULE_DESCRIPTION("LSI MegaRAID SAS Driver");
c4a3e0a5 99
058a8fac 100int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
39a98554 101static int megasas_get_pd_list(struct megasas_instance *instance);
21c9e160
AR		 102static int megasas_ld_list_query(struct megasas_instance *instance,
103 u8 query_type);
39a98554 104static int megasas_issue_init_mfi(struct megasas_instance *instance);
105static int megasas_register_aen(struct megasas_instance *instance,
106 u32 seq_num, u32 class_locale_word);
c4a3e0a5
BS		 107/*
108 * PCI ID table for all supported controllers
109 */
110static struct pci_device_id megasas_pci_table[] = {
111
f3d7271c
HK		 112 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
113 /* xscale IOP */
114 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
115 /* ppc IOP */
af7a5647 116 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
117 /* ppc IOP */
6610a6b3
YB		 118 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
119 /* gen2*/
120 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
121 /* gen2*/
87911122
YB		 122 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
123 /* skinny*/
124 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
125 /* skinny*/
f3d7271c
HK		 126 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
127 /* xscale IOP, vega */
128 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
129 /* xscale IOP */
9c915a8c
AR		 130 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
131 /* Fusion */
229fe47c
AR		 132 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)},
133 /* Plasma */
36807e67
AR		 134 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
135 /* Invader */
21d3c710
SS		 136 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
137 /* Fury */
f3d7271c 138 {}
c4a3e0a5
BS		 139};
140
141MODULE_DEVICE_TABLE(pci, megasas_pci_table);
142
143static int megasas_mgmt_majorno;
229fe47c 144struct megasas_mgmt_info megasas_mgmt_info;
c4a3e0a5 145static struct fasync_struct *megasas_async_queue;
0b950672 146static DEFINE_MUTEX(megasas_async_queue_mutex);
c4a3e0a5 147
c3518837
YB		 148static int megasas_poll_wait_aen;
149static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
72c4fd36 150static u32 support_poll_for_event;
9c915a8c 151u32 megasas_dbg_lvl;
837f5fe8 152static u32 support_device_change;
658dcedb 153
c3518837
YB		 154/* define lock for aen poll */
155spinlock_t poll_aen_lock;
156
9c915a8c 157void
7343eb65 158megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
159 u8 alt_status);
ebf054b0
AR		 160static u32
161megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs);
162static int
163megasas_adp_reset_gen2(struct megasas_instance *instance,
164 struct megasas_register_set __iomem *reg_set);
cd50ba8e
AR		 165static irqreturn_t megasas_isr(int irq, void *devp);
166static u32
167megasas_init_adapter_mfi(struct megasas_instance *instance);
168u32
169megasas_build_and_issue_cmd(struct megasas_instance *instance,
170 struct scsi_cmnd *scmd);
171static void megasas_complete_cmd_dpc(unsigned long instance_addr);
9c915a8c
AR		 172void
173megasas_release_fusion(struct megasas_instance *instance);
174int
175megasas_ioc_init_fusion(struct megasas_instance *instance);
176void
177megasas_free_cmds_fusion(struct megasas_instance *instance);
178u8
179megasas_get_map_info(struct megasas_instance *instance);
180int
181megasas_sync_map_info(struct megasas_instance *instance);
182int
229fe47c
AR		 183wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
184 int seconds);
9c915a8c 185void megasas_reset_reply_desc(struct megasas_instance *instance);
229fe47c 186int megasas_reset_fusion(struct Scsi_Host *shost, int iotimeout);
9c915a8c 187void megasas_fusion_ocr_wq(struct work_struct *work);
229fe47c
AR		 188static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
189 int initial);
190int megasas_check_mpio_paths(struct megasas_instance *instance,
191 struct scsi_cmnd *scmd);
cd50ba8e
AR		 192
193void
194megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
195{
196 instance->instancet->fire_cmd(instance,
197 cmd->frame_phys_addr, 0, instance->reg_set);
198}
7343eb65 199
c4a3e0a5
BS		 200/**
201 * megasas_get_cmd - Get a command from the free pool
202 * @instance: Adapter soft state
203 *
204 * Returns a free command from the pool
205 */
9c915a8c 206struct megasas_cmd *megasas_get_cmd(struct megasas_instance
c4a3e0a5
BS		 207 *instance)
208{
209 unsigned long flags;
210 struct megasas_cmd *cmd = NULL;
211
90dc9d98 212 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
c4a3e0a5
BS		 213
214 if (!list_empty(&instance->cmd_pool)) {
215 cmd = list_entry((&instance->cmd_pool)->next,
216 struct megasas_cmd, list);
217 list_del_init(&cmd->list);
90dc9d98 218 atomic_set(&cmd->mfi_mpt_pthr, MFI_MPT_DETACHED);
c4a3e0a5
BS		 219 } else {
220 printk(KERN_ERR "megasas: Command pool empty!\n");
221 }
222
90dc9d98 223 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
c4a3e0a5
BS		 224 return cmd;
225}
226
227/**
90dc9d98 228 * __megasas_return_cmd - Return a cmd to free command pool
c4a3e0a5
BS		 229 * @instance: Adapter soft state
230 * @cmd: Command packet to be returned to free command pool
231 */
9c915a8c 232inline void
90dc9d98 233__megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
c4a3e0a5 234{
90dc9d98
SS		 235 /*
236 * Don't go ahead and free the MFI frame, if corresponding
237 * MPT frame is not freed(valid for only fusion adapters).
238 * In case of MFI adapters, anyways for any allocated MFI
239 * frame will have cmd->mfi_mpt_mpthr set to MFI_MPT_DETACHED
240 */
241 if (atomic_read(&cmd->mfi_mpt_pthr) != MFI_MPT_DETACHED)
242 return;
c4a3e0a5
BS		 243
244 cmd->scmd = NULL;
9c915a8c 245 cmd->frame_count = 0;
90dc9d98
SS		 246 cmd->is_wait_event = 0;
247 cmd->mpt_pthr_cmd_blocked = NULL;
248
e5f93a36
AR		 249 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) &&
250 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) &&
21d3c710 251 (instance->pdev->device != PCI_DEVICE_ID_LSI_FURY) &&
e5f93a36
AR		 252 (reset_devices))
253 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
c4a3e0a5 254
90dc9d98
SS		 255 atomic_set(&cmd->mfi_mpt_pthr, MFI_LIST_ADDED);
256 list_add(&cmd->list, (&instance->cmd_pool)->next);
257}
258
259/**
260 * megasas_return_cmd - Return a cmd to free command pool
261 * @instance: Adapter soft state
262 * @cmd: Command packet to be returned to free command pool
263 */
264inline void
265megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
266{
267 unsigned long flags;
268
269 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
270 __megasas_return_cmd(instance, cmd);
271 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
c4a3e0a5
BS		 272}
273
1341c939
SP		 274
275/**
0d49016b 276* The following functions are defined for xscale
1341c939
SP		 277* (deviceid : 1064R, PERC5) controllers
278*/
279
c4a3e0a5 280/**
1341c939 281 * megasas_enable_intr_xscale - Enables interrupts
c4a3e0a5
BS		 282 * @regs: MFI register set
283 */
284static inline void
d46a3ad6 285megasas_enable_intr_xscale(struct megasas_instance *instance)
c4a3e0a5 286{
d46a3ad6
SS		 287 struct megasas_register_set __iomem *regs;
288 regs = instance->reg_set;
39a98554 289 writel(0, &(regs)->outbound_intr_mask);
c4a3e0a5
BS		 290
291 /* Dummy readl to force pci flush */
292 readl(&regs->outbound_intr_mask);
293}
294
b274cab7
SP		 295/**
296 * megasas_disable_intr_xscale -Disables interrupt
297 * @regs: MFI register set
298 */
299static inline void
d46a3ad6 300megasas_disable_intr_xscale(struct megasas_instance *instance)
b274cab7 301{
d46a3ad6 302 struct megasas_register_set __iomem *regs;
b274cab7 303 u32 mask = 0x1f;
d46a3ad6 304 regs = instance->reg_set;
b274cab7
SP		 305 writel(mask, &regs->outbound_intr_mask);
306 /* Dummy readl to force pci flush */
307 readl(&regs->outbound_intr_mask);
308}
309
1341c939
SP		 310/**
311 * megasas_read_fw_status_reg_xscale - returns the current FW status value
312 * @regs: MFI register set
313 */
314static u32
315megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs)
316{
317 return readl(&(regs)->outbound_msg_0);
318}
319/**
320 * megasas_clear_interrupt_xscale - Check & clear interrupt
321 * @regs: MFI register set
322 */
0d49016b 323static int
1341c939
SP		 324megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs)
325{
326 u32 status;
39a98554 327 u32 mfiStatus = 0;
1341c939
SP		 328 /*
329 * Check if it is our interrupt
330 */
331 status = readl(&regs->outbound_intr_status);
332
39a98554 333 if (status & MFI_OB_INTR_STATUS_MASK)
334 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
335 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
336 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
1341c939
SP		 337
338 /*
339 * Clear the interrupt by writing back the same value
340 */
39a98554 341 if (mfiStatus)
342 writel(status, &regs->outbound_intr_status);
1341c939 343
06f579de
YB		 344 /* Dummy readl to force pci flush */
345 readl(&regs->outbound_intr_status);
346
39a98554 347 return mfiStatus;
1341c939
SP		 348}
349
350/**
351 * megasas_fire_cmd_xscale - Sends command to the FW
352 * @frame_phys_addr : Physical address of cmd
353 * @frame_count : Number of frames for the command
354 * @regs : MFI register set
355 */
0d49016b 356static inline void
0c79e681
YB		 357megasas_fire_cmd_xscale(struct megasas_instance *instance,
358 dma_addr_t frame_phys_addr,
359 u32 frame_count,
360 struct megasas_register_set __iomem *regs)
1341c939 361{
39a98554 362 unsigned long flags;
363 spin_lock_irqsave(&instance->hba_lock, flags);
1341c939
SP		 364 writel((frame_phys_addr >> 3)|(frame_count),
365 &(regs)->inbound_queue_port);
39a98554 366 spin_unlock_irqrestore(&instance->hba_lock, flags);
367}
368
369/**
370 * megasas_adp_reset_xscale - For controller reset
371 * @regs: MFI register set
372 */
373static int
374megasas_adp_reset_xscale(struct megasas_instance *instance,
375 struct megasas_register_set __iomem *regs)
376{
377 u32 i;
378 u32 pcidata;
379 writel(MFI_ADP_RESET, &regs->inbound_doorbell);
380
381 for (i = 0; i < 3; i++)
382 msleep(1000); /* sleep for 3 secs */
383 pcidata = 0;
384 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
385 printk(KERN_NOTICE "pcidata = %x\n", pcidata);
386 if (pcidata & 0x2) {
387 printk(KERN_NOTICE "mfi 1068 offset read=%x\n", pcidata);
388 pcidata &= ~0x2;
389 pci_write_config_dword(instance->pdev,
390 MFI_1068_PCSR_OFFSET, pcidata);
391
392 for (i = 0; i < 2; i++)
393 msleep(1000); /* need to wait 2 secs again */
394
395 pcidata = 0;
396 pci_read_config_dword(instance->pdev,
397 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
398 printk(KERN_NOTICE "1068 offset handshake read=%x\n", pcidata);
399 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
400 printk(KERN_NOTICE "1068 offset pcidt=%x\n", pcidata);
401 pcidata = 0;
402 pci_write_config_dword(instance->pdev,
403 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
404 }
405 }
406 return 0;
407}
408
409/**
410 * megasas_check_reset_xscale - For controller reset check
411 * @regs: MFI register set
412 */
413static int
414megasas_check_reset_xscale(struct megasas_instance *instance,
415 struct megasas_register_set __iomem *regs)
416{
39a98554 417
418 if ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) &&
94cd65dd
SS		 419 (le32_to_cpu(*instance->consumer) ==
420 MEGASAS_ADPRESET_INPROG_SIGN))
39a98554 421 return 1;
39a98554 422 return 0;
1341c939
SP		 423}
424
425static struct megasas_instance_template megasas_instance_template_xscale = {
426
427 .fire_cmd = megasas_fire_cmd_xscale,
428 .enable_intr = megasas_enable_intr_xscale,
b274cab7 429 .disable_intr = megasas_disable_intr_xscale,
1341c939
SP		 430 .clear_intr = megasas_clear_intr_xscale,
431 .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
39a98554 432 .adp_reset = megasas_adp_reset_xscale,
433 .check_reset = megasas_check_reset_xscale,
cd50ba8e
AR		 434 .service_isr = megasas_isr,
435 .tasklet = megasas_complete_cmd_dpc,
436 .init_adapter = megasas_init_adapter_mfi,
437 .build_and_issue_cmd = megasas_build_and_issue_cmd,
438 .issue_dcmd = megasas_issue_dcmd,
1341c939
SP		 439};
440
441/**
0d49016b 442* This is the end of set of functions & definitions specific
1341c939
SP		 443* to xscale (deviceid : 1064R, PERC5) controllers
444*/
445
f9876f0b 446/**
0d49016b 447* The following functions are defined for ppc (deviceid : 0x60)
f9876f0b
SP		 448* controllers
449*/
450
451/**
452 * megasas_enable_intr_ppc - Enables interrupts
453 * @regs: MFI register set
454 */
455static inline void
d46a3ad6 456megasas_enable_intr_ppc(struct megasas_instance *instance)
f9876f0b 457{
d46a3ad6
SS		 458 struct megasas_register_set __iomem *regs;
459 regs = instance->reg_set;
f9876f0b 460 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
0d49016b 461
39a98554 462 writel(~0x80000000, &(regs)->outbound_intr_mask);
f9876f0b
SP		 463
464 /* Dummy readl to force pci flush */
465 readl(&regs->outbound_intr_mask);
466}
467
b274cab7
SP		 468/**
469 * megasas_disable_intr_ppc - Disable interrupt
470 * @regs: MFI register set
471 */
472static inline void
d46a3ad6 473megasas_disable_intr_ppc(struct megasas_instance *instance)
b274cab7 474{
d46a3ad6 475 struct megasas_register_set __iomem *regs;
b274cab7 476 u32 mask = 0xFFFFFFFF;
d46a3ad6 477 regs = instance->reg_set;
b274cab7
SP		 478 writel(mask, &regs->outbound_intr_mask);
479 /* Dummy readl to force pci flush */
480 readl(&regs->outbound_intr_mask);
481}
482
f9876f0b
SP		 483/**
484 * megasas_read_fw_status_reg_ppc - returns the current FW status value
485 * @regs: MFI register set
486 */
487static u32
488megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs)
489{
490 return readl(&(regs)->outbound_scratch_pad);
491}
492
493/**
494 * megasas_clear_interrupt_ppc - Check & clear interrupt
495 * @regs: MFI register set
496 */
0d49016b 497static int
f9876f0b
SP		 498megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs)
499{
3cc6851f
AR		 500 u32 status, mfiStatus = 0;
501
f9876f0b
SP		 502 /*
503 * Check if it is our interrupt
504 */
505 status = readl(&regs->outbound_intr_status);
506
3cc6851f
AR		 507 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
508 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
509
510 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
511 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
f9876f0b
SP		 512
513 /*
514 * Clear the interrupt by writing back the same value
515 */
516 writel(status, &regs->outbound_doorbell_clear);
517
06f579de
YB		 518 /* Dummy readl to force pci flush */
519 readl(&regs->outbound_doorbell_clear);
520
3cc6851f 521 return mfiStatus;
f9876f0b 522}
3cc6851f 523
f9876f0b
SP		 524/**
525 * megasas_fire_cmd_ppc - Sends command to the FW
526 * @frame_phys_addr : Physical address of cmd
527 * @frame_count : Number of frames for the command
528 * @regs : MFI register set
529 */
0d49016b 530static inline void
0c79e681
YB		 531megasas_fire_cmd_ppc(struct megasas_instance *instance,
532 dma_addr_t frame_phys_addr,
533 u32 frame_count,
534 struct megasas_register_set __iomem *regs)
f9876f0b 535{
39a98554 536 unsigned long flags;
537 spin_lock_irqsave(&instance->hba_lock, flags);
0d49016b 538 writel((frame_phys_addr | (frame_count<<1))|1,
f9876f0b 539 &(regs)->inbound_queue_port);
39a98554 540 spin_unlock_irqrestore(&instance->hba_lock, flags);
f9876f0b
SP		 541}
542
39a98554 543/**
544 * megasas_check_reset_ppc - For controller reset check
545 * @regs: MFI register set
546 */
547static int
548megasas_check_reset_ppc(struct megasas_instance *instance,
549 struct megasas_register_set __iomem *regs)
550{
3cc6851f
AR		 551 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL)
552 return 1;
553
39a98554 554 return 0;
555}
3cc6851f 556
f9876f0b 557static struct megasas_instance_template megasas_instance_template_ppc = {
0d49016b 558
f9876f0b
SP		 559 .fire_cmd = megasas_fire_cmd_ppc,
560 .enable_intr = megasas_enable_intr_ppc,
b274cab7 561 .disable_intr = megasas_disable_intr_ppc,
f9876f0b
SP		 562 .clear_intr = megasas_clear_intr_ppc,
563 .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
3cc6851f 564 .adp_reset = megasas_adp_reset_xscale,
39a98554 565 .check_reset = megasas_check_reset_ppc,
cd50ba8e
AR		 566 .service_isr = megasas_isr,
567 .tasklet = megasas_complete_cmd_dpc,
568 .init_adapter = megasas_init_adapter_mfi,
569 .build_and_issue_cmd = megasas_build_and_issue_cmd,
570 .issue_dcmd = megasas_issue_dcmd,
f9876f0b
SP		 571};
572
87911122
YB		 573/**
574 * megasas_enable_intr_skinny - Enables interrupts
575 * @regs: MFI register set
576 */
577static inline void
d46a3ad6 578megasas_enable_intr_skinny(struct megasas_instance *instance)
87911122 579{
d46a3ad6
SS		 580 struct megasas_register_set __iomem *regs;
581 regs = instance->reg_set;
87911122
YB		 582 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
583
584 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
585
586 /* Dummy readl to force pci flush */
587 readl(&regs->outbound_intr_mask);
588}
589
590/**
591 * megasas_disable_intr_skinny - Disables interrupt
592 * @regs: MFI register set
593 */
594static inline void
d46a3ad6 595megasas_disable_intr_skinny(struct megasas_instance *instance)
87911122 596{
d46a3ad6 597 struct megasas_register_set __iomem *regs;
87911122 598 u32 mask = 0xFFFFFFFF;
d46a3ad6 599 regs = instance->reg_set;
87911122
YB		 600 writel(mask, &regs->outbound_intr_mask);
601 /* Dummy readl to force pci flush */
602 readl(&regs->outbound_intr_mask);
603}
604
605/**
606 * megasas_read_fw_status_reg_skinny - returns the current FW status value
607 * @regs: MFI register set
608 */
609static u32
610megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs)
611{
612 return readl(&(regs)->outbound_scratch_pad);
613}
614
615/**
616 * megasas_clear_interrupt_skinny - Check & clear interrupt
617 * @regs: MFI register set
618 */
619static int
620megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs)
621{
622 u32 status;
ebf054b0
AR		 623 u32 mfiStatus = 0;
624
87911122
YB		 625 /*
626 * Check if it is our interrupt
627 */
628 status = readl(&regs->outbound_intr_status);
629
630 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
39a98554 631 return 0;
87911122
YB		 632 }
633
ebf054b0
AR		 634 /*
635 * Check if it is our interrupt
636 */
a3fda7dd 637 if ((megasas_read_fw_status_reg_skinny(regs) & MFI_STATE_MASK) ==
ebf054b0
AR		 638 MFI_STATE_FAULT) {
639 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
640 } else
641 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
642
87911122
YB		 643 /*
644 * Clear the interrupt by writing back the same value
645 */
646 writel(status, &regs->outbound_intr_status);
647
648 /*
649 * dummy read to flush PCI
650 */
651 readl(&regs->outbound_intr_status);
652
ebf054b0 653 return mfiStatus;
87911122
YB		 654}
655
656/**
657 * megasas_fire_cmd_skinny - Sends command to the FW
658 * @frame_phys_addr : Physical address of cmd
659 * @frame_count : Number of frames for the command
660 * @regs : MFI register set
661 */
662static inline void
0c79e681
YB		 663megasas_fire_cmd_skinny(struct megasas_instance *instance,
664 dma_addr_t frame_phys_addr,
665 u32 frame_count,
87911122
YB		 666 struct megasas_register_set __iomem *regs)
667{
0c79e681 668 unsigned long flags;
39a98554 669 spin_lock_irqsave(&instance->hba_lock, flags);
94cd65dd
SS		 670 writel(upper_32_bits(frame_phys_addr),
671 &(regs)->inbound_high_queue_port);
672 writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
673 &(regs)->inbound_low_queue_port);
39a98554 674 spin_unlock_irqrestore(&instance->hba_lock, flags);
675}
676
39a98554 677/**
678 * megasas_check_reset_skinny - For controller reset check
679 * @regs: MFI register set
680 */
681static int
682megasas_check_reset_skinny(struct megasas_instance *instance,
683 struct megasas_register_set __iomem *regs)
684{
3cc6851f
AR		 685 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL)
686 return 1;
687
39a98554 688 return 0;
87911122
YB		 689}
690
691static struct megasas_instance_template megasas_instance_template_skinny = {
692
693 .fire_cmd = megasas_fire_cmd_skinny,
694 .enable_intr = megasas_enable_intr_skinny,
695 .disable_intr = megasas_disable_intr_skinny,
696 .clear_intr = megasas_clear_intr_skinny,
697 .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
ebf054b0 698 .adp_reset = megasas_adp_reset_gen2,
39a98554 699 .check_reset = megasas_check_reset_skinny,
cd50ba8e
AR		 700 .service_isr = megasas_isr,
701 .tasklet = megasas_complete_cmd_dpc,
702 .init_adapter = megasas_init_adapter_mfi,
703 .build_and_issue_cmd = megasas_build_and_issue_cmd,
704 .issue_dcmd = megasas_issue_dcmd,
87911122
YB		 705};
706
707
6610a6b3
YB		 708/**
709* The following functions are defined for gen2 (deviceid : 0x78 0x79)
710* controllers
711*/
712
713/**
714 * megasas_enable_intr_gen2 - Enables interrupts
715 * @regs: MFI register set
716 */
717static inline void
d46a3ad6 718megasas_enable_intr_gen2(struct megasas_instance *instance)
6610a6b3 719{
d46a3ad6
SS		 720 struct megasas_register_set __iomem *regs;
721 regs = instance->reg_set;
6610a6b3
YB		 722 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
723
724 /* write ~0x00000005 (4 & 1) to the intr mask*/
725 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
726
727 /* Dummy readl to force pci flush */
728 readl(&regs->outbound_intr_mask);
729}
730
731/**
732 * megasas_disable_intr_gen2 - Disables interrupt
733 * @regs: MFI register set
734 */
735static inline void
d46a3ad6 736megasas_disable_intr_gen2(struct megasas_instance *instance)
6610a6b3 737{
d46a3ad6 738 struct megasas_register_set __iomem *regs;
6610a6b3 739 u32 mask = 0xFFFFFFFF;
d46a3ad6 740 regs = instance->reg_set;
6610a6b3
YB		 741 writel(mask, &regs->outbound_intr_mask);
742 /* Dummy readl to force pci flush */
743 readl(&regs->outbound_intr_mask);
744}
745
746/**
747 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
748 * @regs: MFI register set
749 */
750static u32
751megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs)
752{
753 return readl(&(regs)->outbound_scratch_pad);
754}
755
756/**
757 * megasas_clear_interrupt_gen2 - Check & clear interrupt
758 * @regs: MFI register set
759 */
760static int
761megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs)
762{
763 u32 status;
39a98554 764 u32 mfiStatus = 0;
6610a6b3
YB		 765 /*
766 * Check if it is our interrupt
767 */
768 status = readl(&regs->outbound_intr_status);
769
b5bccadd 770 if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
39a98554 771 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
772 }
773 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
774 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
775 }
6610a6b3
YB		 776
777 /*
778 * Clear the interrupt by writing back the same value
779 */
39a98554 780 if (mfiStatus)
781 writel(status, &regs->outbound_doorbell_clear);
6610a6b3
YB		 782
783 /* Dummy readl to force pci flush */
784 readl(&regs->outbound_intr_status);
785
39a98554 786 return mfiStatus;
6610a6b3
YB		 787}
788/**
789 * megasas_fire_cmd_gen2 - Sends command to the FW
790 * @frame_phys_addr : Physical address of cmd
791 * @frame_count : Number of frames for the command
792 * @regs : MFI register set
793 */
794static inline void
0c79e681
YB		 795megasas_fire_cmd_gen2(struct megasas_instance *instance,
796 dma_addr_t frame_phys_addr,
797 u32 frame_count,
6610a6b3
YB		 798 struct megasas_register_set __iomem *regs)
799{
39a98554 800 unsigned long flags;
801 spin_lock_irqsave(&instance->hba_lock, flags);
6610a6b3
YB		 802 writel((frame_phys_addr | (frame_count<<1))|1,
803 &(regs)->inbound_queue_port);
39a98554 804 spin_unlock_irqrestore(&instance->hba_lock, flags);
805}
806
807/**
808 * megasas_adp_reset_gen2 - For controller reset
809 * @regs: MFI register set
810 */
811static int
812megasas_adp_reset_gen2(struct megasas_instance *instance,
813 struct megasas_register_set __iomem *reg_set)
814{
815 u32 retry = 0 ;
816 u32 HostDiag;
ebf054b0
AR		 817 u32 *seq_offset = &reg_set->seq_offset;
818 u32 *hostdiag_offset = &reg_set->host_diag;
819
820 if (instance->instancet == &megasas_instance_template_skinny) {
821 seq_offset = &reg_set->fusion_seq_offset;
822 hostdiag_offset = &reg_set->fusion_host_diag;
823 }
824
825 writel(0, seq_offset);
826 writel(4, seq_offset);
827 writel(0xb, seq_offset);
828 writel(2, seq_offset);
829 writel(7, seq_offset);
830 writel(0xd, seq_offset);
39a98554 831
39a98554 832 msleep(1000);
833
ebf054b0 834 HostDiag = (u32)readl(hostdiag_offset);
39a98554 835
836 while ( !( HostDiag & DIAG_WRITE_ENABLE) ) {
837 msleep(100);
ebf054b0 838 HostDiag = (u32)readl(hostdiag_offset);
39a98554 839 printk(KERN_NOTICE "RESETGEN2: retry=%x, hostdiag=%x\n",
840 retry, HostDiag);
841
842 if (retry++ >= 100)
843 return 1;
844
845 }
846
847 printk(KERN_NOTICE "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
848
ebf054b0 849 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
39a98554 850
851 ssleep(10);
852
ebf054b0 853 HostDiag = (u32)readl(hostdiag_offset);
39a98554 854 while ( ( HostDiag & DIAG_RESET_ADAPTER) ) {
855 msleep(100);
ebf054b0 856 HostDiag = (u32)readl(hostdiag_offset);
39a98554 857 printk(KERN_NOTICE "RESET_GEN2: retry=%x, hostdiag=%x\n",
858 retry, HostDiag);
859
860 if (retry++ >= 1000)
861 return 1;
862
863 }
864 return 0;
865}
866
867/**
868 * megasas_check_reset_gen2 - For controller reset check
869 * @regs: MFI register set
870 */
871static int
872megasas_check_reset_gen2(struct megasas_instance *instance,
873 struct megasas_register_set __iomem *regs)
874{
707e09bd
YB		 875 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
876 return 1;
877 }
878
39a98554 879 return 0;
6610a6b3
YB		 880}
881
882static struct megasas_instance_template megasas_instance_template_gen2 = {
883
884 .fire_cmd = megasas_fire_cmd_gen2,
885 .enable_intr = megasas_enable_intr_gen2,
886 .disable_intr = megasas_disable_intr_gen2,
887 .clear_intr = megasas_clear_intr_gen2,
888 .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
39a98554 889 .adp_reset = megasas_adp_reset_gen2,
890 .check_reset = megasas_check_reset_gen2,
cd50ba8e
AR		 891 .service_isr = megasas_isr,
892 .tasklet = megasas_complete_cmd_dpc,
893 .init_adapter = megasas_init_adapter_mfi,
894 .build_and_issue_cmd = megasas_build_and_issue_cmd,
895 .issue_dcmd = megasas_issue_dcmd,
6610a6b3
YB		 896};
897
f9876f0b
SP		 898/**
899* This is the end of set of functions & definitions
39a98554 900* specific to gen2 (deviceid : 0x78, 0x79) controllers
f9876f0b
SP		 901*/
902
9c915a8c
AR		 903/*
904 * Template added for TB (Fusion)
905 */
906extern struct megasas_instance_template megasas_instance_template_fusion;
907
c4a3e0a5
BS		 908/**
909 * megasas_issue_polled - Issues a polling command
910 * @instance: Adapter soft state
0d49016b 911 * @cmd: Command packet to be issued
c4a3e0a5
BS		 912 *
913 * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
914 */
9c915a8c 915int
c4a3e0a5
BS		 916megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
917{
229fe47c 918 int seconds;
c4a3e0a5
BS		 919
920 struct megasas_header *frame_hdr = &cmd->frame->hdr;
921
94cd65dd
SS		 922 frame_hdr->cmd_status = MFI_CMD_STATUS_POLL_MODE;
923 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
c4a3e0a5
BS		 924
925 /*
926 * Issue the frame using inbound queue port
927 */
9c915a8c 928 instance->instancet->issue_dcmd(instance, cmd);
c4a3e0a5
BS		 929
930 /*
931 * Wait for cmd_status to change
932 */
229fe47c
AR		 933 if (instance->requestorId)
934 seconds = MEGASAS_ROUTINE_WAIT_TIME_VF;
935 else
936 seconds = MFI_POLL_TIMEOUT_SECS;
937 return wait_and_poll(instance, cmd, seconds);
c4a3e0a5
BS		 938}
939
940/**
941 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds
942 * @instance: Adapter soft state
943 * @cmd: Command to be issued
cfbe7554 944 * @timeout: Timeout in seconds
c4a3e0a5
BS		 945 *
946 * This function waits on an event for the command to be returned from ISR.
2a3681e5 947 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
c4a3e0a5
BS		 948 * Used to issue ioctl commands.
949 */
90dc9d98 950int
c4a3e0a5 951megasas_issue_blocked_cmd(struct megasas_instance *instance,
cfbe7554 952 struct megasas_cmd *cmd, int timeout)
c4a3e0a5 953{
cfbe7554 954 int ret = 0;
c4a3e0a5
BS		 955 cmd->cmd_status = ENODATA;
956
90dc9d98 957 cmd->is_wait_event = 1;
9c915a8c 958 instance->instancet->issue_dcmd(instance, cmd);
cfbe7554
SS		 959 if (timeout) {
960 ret = wait_event_timeout(instance->int_cmd_wait_q,
961 cmd->cmd_status != ENODATA, timeout * HZ);
962 if (!ret)
963 return 1;
964 } else
965 wait_event(instance->int_cmd_wait_q,
966 cmd->cmd_status != ENODATA);
c4a3e0a5
BS		 967
968 return 0;
969}
970
971/**
972 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd
973 * @instance: Adapter soft state
974 * @cmd_to_abort: Previously issued cmd to be aborted
cfbe7554 975 * @timeout: Timeout in seconds
c4a3e0a5 976 *
cfbe7554 977 * MFI firmware can abort previously issued AEN comamnd (automatic event
c4a3e0a5 978 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
2a3681e5
SP		 979 * cmd and waits for return status.
980 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
c4a3e0a5
BS		 981 */
982static int
983megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
cfbe7554 984 struct megasas_cmd *cmd_to_abort, int timeout)
c4a3e0a5
BS		 985{
986 struct megasas_cmd *cmd;
987 struct megasas_abort_frame *abort_fr;
cfbe7554 988 int ret = 0;
c4a3e0a5
BS		 989
990 cmd = megasas_get_cmd(instance);
991
992 if (!cmd)
993 return -1;
994
995 abort_fr = &cmd->frame->abort;
996
997 /*
998 * Prepare and issue the abort frame
999 */
1000 abort_fr->cmd = MFI_CMD_ABORT;
1001 abort_fr->cmd_status = 0xFF;
94cd65dd
SS		 1002 abort_fr->flags = cpu_to_le16(0);
1003 abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
1004 abort_fr->abort_mfi_phys_addr_lo =
1005 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
1006 abort_fr->abort_mfi_phys_addr_hi =
1007 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
c4a3e0a5
BS		 1008
1009 cmd->sync_cmd = 1;
170c2387 1010 cmd->cmd_status = ENODATA;
c4a3e0a5 1011
9c915a8c 1012 instance->instancet->issue_dcmd(instance, cmd);
c4a3e0a5 1013
cfbe7554
SS		 1014 if (timeout) {
1015 ret = wait_event_timeout(instance->abort_cmd_wait_q,
1016 cmd->cmd_status != ENODATA, timeout * HZ);
1017 if (!ret) {
1018 dev_err(&instance->pdev->dev, "Command timedout"
1019 "from %s\n", __func__);
1020 return 1;
1021 }
1022 } else
1023 wait_event(instance->abort_cmd_wait_q,
1024 cmd->cmd_status != ENODATA);
1025
39a98554 1026 cmd->sync_cmd = 0;
c4a3e0a5
BS		 1027
1028 megasas_return_cmd(instance, cmd);
1029 return 0;
1030}
1031
1032/**
1033 * megasas_make_sgl32 - Prepares 32-bit SGL
1034 * @instance: Adapter soft state
1035 * @scp: SCSI command from the mid-layer
1036 * @mfi_sgl: SGL to be filled in
1037 *
1038 * If successful, this function returns the number of SG elements. Otherwise,
1039 * it returnes -1.
1040 */
858119e1 1041static int
c4a3e0a5
BS		 1042megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
1043 union megasas_sgl *mfi_sgl)
1044{
1045 int i;
1046 int sge_count;
1047 struct scatterlist *os_sgl;
1048
155d98f0
FT		 1049 sge_count = scsi_dma_map(scp);
1050 BUG_ON(sge_count < 0);
c4a3e0a5 1051
155d98f0
FT		 1052 if (sge_count) {
1053 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
94cd65dd
SS		 1054 mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1055 mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
155d98f0 1056 }
c4a3e0a5 1057 }
c4a3e0a5
BS		 1058 return sge_count;
1059}
1060
1061/**
1062 * megasas_make_sgl64 - Prepares 64-bit SGL
1063 * @instance: Adapter soft state
1064 * @scp: SCSI command from the mid-layer
1065 * @mfi_sgl: SGL to be filled in
1066 *
1067 * If successful, this function returns the number of SG elements. Otherwise,
1068 * it returnes -1.
1069 */
858119e1 1070static int
c4a3e0a5
BS		 1071megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1072 union megasas_sgl *mfi_sgl)
1073{
1074 int i;
1075 int sge_count;
1076 struct scatterlist *os_sgl;
1077
155d98f0
FT		 1078 sge_count = scsi_dma_map(scp);
1079 BUG_ON(sge_count < 0);
c4a3e0a5 1080
155d98f0
FT		 1081 if (sge_count) {
1082 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
94cd65dd
SS		 1083 mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1084 mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
155d98f0 1085 }
c4a3e0a5 1086 }
c4a3e0a5
BS		 1087 return sge_count;
1088}
1089
f4c9a131
YB		 1090/**
1091 * megasas_make_sgl_skinny - Prepares IEEE SGL
1092 * @instance: Adapter soft state
1093 * @scp: SCSI command from the mid-layer
1094 * @mfi_sgl: SGL to be filled in
1095 *
1096 * If successful, this function returns the number of SG elements. Otherwise,
1097 * it returnes -1.
1098 */
1099static int
1100megasas_make_sgl_skinny(struct megasas_instance *instance,
1101 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1102{
1103 int i;
1104 int sge_count;
1105 struct scatterlist *os_sgl;
1106
1107 sge_count = scsi_dma_map(scp);
1108
1109 if (sge_count) {
1110 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
94cd65dd
SS		 1111 mfi_sgl->sge_skinny[i].length =
1112 cpu_to_le32(sg_dma_len(os_sgl));
f4c9a131 1113 mfi_sgl->sge_skinny[i].phys_addr =
94cd65dd
SS		 1114 cpu_to_le64(sg_dma_address(os_sgl));
1115 mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
f4c9a131
YB		 1116 }
1117 }
1118 return sge_count;
1119}
1120
b1df99d9
SP		 1121 /**
1122 * megasas_get_frame_count - Computes the number of frames
d532dbe2 1123 * @frame_type : type of frame- io or pthru frame
b1df99d9
SP		 1124 * @sge_count : number of sg elements
1125 *
1126 * Returns the number of frames required for numnber of sge's (sge_count)
1127 */
1128
f4c9a131
YB		 1129static u32 megasas_get_frame_count(struct megasas_instance *instance,
1130 u8 sge_count, u8 frame_type)
b1df99d9
SP		 1131{
1132 int num_cnt;
1133 int sge_bytes;
1134 u32 sge_sz;
1135 u32 frame_count=0;
1136
1137 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1138 sizeof(struct megasas_sge32);
1139
f4c9a131
YB		 1140 if (instance->flag_ieee) {
1141 sge_sz = sizeof(struct megasas_sge_skinny);
1142 }
1143
b1df99d9 1144 /*
d532dbe2 1145 * Main frame can contain 2 SGEs for 64-bit SGLs and
1146 * 3 SGEs for 32-bit SGLs for ldio &
1147 * 1 SGEs for 64-bit SGLs and
1148 * 2 SGEs for 32-bit SGLs for pthru frame
1149 */
1150 if (unlikely(frame_type == PTHRU_FRAME)) {
f4c9a131
YB		 1151 if (instance->flag_ieee == 1) {
1152 num_cnt = sge_count - 1;
1153 } else if (IS_DMA64)
d532dbe2 1154 num_cnt = sge_count - 1;
1155 else
1156 num_cnt = sge_count - 2;
1157 } else {
f4c9a131
YB		 1158 if (instance->flag_ieee == 1) {
1159 num_cnt = sge_count - 1;
1160 } else if (IS_DMA64)
d532dbe2 1161 num_cnt = sge_count - 2;
1162 else
1163 num_cnt = sge_count - 3;
1164 }
b1df99d9
SP		 1165
1166 if(num_cnt>0){
1167 sge_bytes = sge_sz * num_cnt;
1168
1169 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1170 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1171 }
1172 /* Main frame */
1173 frame_count +=1;
1174
1175 if (frame_count > 7)
1176 frame_count = 8;
1177 return frame_count;
1178}
1179
c4a3e0a5
BS		 1180/**
1181 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1182 * @instance: Adapter soft state
1183 * @scp: SCSI command
1184 * @cmd: Command to be prepared in
1185 *
1186 * This function prepares CDB commands. These are typcially pass-through
1187 * commands to the devices.
1188 */
858119e1 1189static int
c4a3e0a5
BS		 1190megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1191 struct megasas_cmd *cmd)
1192{
c4a3e0a5
BS		 1193 u32 is_logical;
1194 u32 device_id;
1195 u16 flags = 0;
1196 struct megasas_pthru_frame *pthru;
1197
1198 is_logical = MEGASAS_IS_LOGICAL(scp);
4a5c814d 1199 device_id = MEGASAS_DEV_INDEX(scp);
c4a3e0a5
BS		 1200 pthru = (struct megasas_pthru_frame *)cmd->frame;
1201
1202 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1203 flags = MFI_FRAME_DIR_WRITE;
1204 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1205 flags = MFI_FRAME_DIR_READ;
1206 else if (scp->sc_data_direction == PCI_DMA_NONE)
1207 flags = MFI_FRAME_DIR_NONE;
1208
f4c9a131
YB		 1209 if (instance->flag_ieee == 1) {
1210 flags |= MFI_FRAME_IEEE;
1211 }
1212
c4a3e0a5
BS		 1213 /*
1214 * Prepare the DCDB frame
1215 */
1216 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1217 pthru->cmd_status = 0x0;
1218 pthru->scsi_status = 0x0;
1219 pthru->target_id = device_id;
1220 pthru->lun = scp->device->lun;
1221 pthru->cdb_len = scp->cmd_len;
1222 pthru->timeout = 0;
780a3762 1223 pthru->pad_0 = 0;
94cd65dd
SS		 1224 pthru->flags = cpu_to_le16(flags);
1225 pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
c4a3e0a5
BS		 1226
1227 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1228
8d568253
YB		 1229 /*
1230 * If the command is for the tape device, set the
1231 * pthru timeout to the os layer timeout value.
1232 */
1233 if (scp->device->type == TYPE_TAPE) {
1234 if ((scp->request->timeout / HZ) > 0xFFFF)
1235 pthru->timeout = 0xFFFF;
1236 else
94cd65dd 1237 pthru->timeout = cpu_to_le16(scp->request->timeout / HZ);
8d568253
YB		 1238 }
1239
c4a3e0a5
BS		 1240 /*
1241 * Construct SGL
1242 */
f4c9a131 1243 if (instance->flag_ieee == 1) {
94cd65dd 1244 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
f4c9a131
YB		 1245 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1246 &pthru->sgl);
1247 } else if (IS_DMA64) {
94cd65dd 1248 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
c4a3e0a5
BS		 1249 pthru->sge_count = megasas_make_sgl64(instance, scp,
1250 &pthru->sgl);
1251 } else
1252 pthru->sge_count = megasas_make_sgl32(instance, scp,
1253 &pthru->sgl);
1254
bdc6fb8d
YB		 1255 if (pthru->sge_count > instance->max_num_sge) {
1256 printk(KERN_ERR "megasas: DCDB two many SGE NUM=%x\n",
1257 pthru->sge_count);
1258 return 0;
1259 }
1260
c4a3e0a5
BS		 1261 /*
1262 * Sense info specific
1263 */
1264 pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
94cd65dd
SS		 1265 pthru->sense_buf_phys_addr_hi =
1266 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
1267 pthru->sense_buf_phys_addr_lo =
1268 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
c4a3e0a5 1269
c4a3e0a5
BS		 1270 /*
1271 * Compute the total number of frames this command consumes. FW uses
1272 * this number to pull sufficient number of frames from host memory.
1273 */
f4c9a131 1274 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
d532dbe2 1275 PTHRU_FRAME);
c4a3e0a5
BS		 1276
1277 return cmd->frame_count;
1278}
1279
1280/**
1281 * megasas_build_ldio - Prepares IOs to logical devices
1282 * @instance: Adapter soft state
1283 * @scp: SCSI command
fd589a8f 1284 * @cmd: Command to be prepared
c4a3e0a5
BS		 1285 *
1286 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1287 */
858119e1 1288static int
c4a3e0a5
BS		 1289megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1290 struct megasas_cmd *cmd)
1291{
c4a3e0a5
BS		 1292 u32 device_id;
1293 u8 sc = scp->cmnd[0];
1294 u16 flags = 0;
1295 struct megasas_io_frame *ldio;
1296
4a5c814d 1297 device_id = MEGASAS_DEV_INDEX(scp);
c4a3e0a5
BS		 1298 ldio = (struct megasas_io_frame *)cmd->frame;
1299
1300 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1301 flags = MFI_FRAME_DIR_WRITE;
1302 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1303 flags = MFI_FRAME_DIR_READ;
1304
f4c9a131
YB		 1305 if (instance->flag_ieee == 1) {
1306 flags |= MFI_FRAME_IEEE;
1307 }
1308
c4a3e0a5 1309 /*
b1df99d9 1310 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
c4a3e0a5
BS		 1311 */
1312 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1313 ldio->cmd_status = 0x0;
1314 ldio->scsi_status = 0x0;
1315 ldio->target_id = device_id;
1316 ldio->timeout = 0;
1317 ldio->reserved_0 = 0;
1318 ldio->pad_0 = 0;
94cd65dd 1319 ldio->flags = cpu_to_le16(flags);
c4a3e0a5
BS		 1320 ldio->start_lba_hi = 0;
1321 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1322
1323 /*
1324 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1325 */
1326 if (scp->cmd_len == 6) {
94cd65dd
SS		 1327 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
1328 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
1329 ((u32) scp->cmnd[2] << 8) |
1330 (u32) scp->cmnd[3]);
c4a3e0a5 1331
94cd65dd 1332 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
c4a3e0a5
BS		 1333 }
1334
1335 /*
1336 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1337 */
1338 else if (scp->cmd_len == 10) {
94cd65dd
SS		 1339 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
1340 ((u32) scp->cmnd[7] << 8));
1341 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1342 ((u32) scp->cmnd[3] << 16) |
1343 ((u32) scp->cmnd[4] << 8) |
1344 (u32) scp->cmnd[5]);
c4a3e0a5
BS		 1345 }
1346
1347 /*
1348 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1349 */
1350 else if (scp->cmd_len == 12) {
94cd65dd
SS		 1351 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1352 ((u32) scp->cmnd[7] << 16) |
1353 ((u32) scp->cmnd[8] << 8) |
1354 (u32) scp->cmnd[9]);
c4a3e0a5 1355
94cd65dd
SS		 1356 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1357 ((u32) scp->cmnd[3] << 16) |
1358 ((u32) scp->cmnd[4] << 8) |
1359 (u32) scp->cmnd[5]);
c4a3e0a5
BS		 1360 }
1361
1362 /*
1363 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1364 */
1365 else if (scp->cmd_len == 16) {
94cd65dd
SS		 1366 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
1367 ((u32) scp->cmnd[11] << 16) |
1368 ((u32) scp->cmnd[12] << 8) |
1369 (u32) scp->cmnd[13]);
c4a3e0a5 1370
94cd65dd
SS		 1371 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1372 ((u32) scp->cmnd[7] << 16) |
1373 ((u32) scp->cmnd[8] << 8) |
1374 (u32) scp->cmnd[9]);
c4a3e0a5 1375
94cd65dd
SS		 1376 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1377 ((u32) scp->cmnd[3] << 16) |
1378 ((u32) scp->cmnd[4] << 8) |
1379 (u32) scp->cmnd[5]);
c4a3e0a5
BS		 1380
1381 }
1382
1383 /*
1384 * Construct SGL
1385 */
f4c9a131 1386 if (instance->flag_ieee) {
94cd65dd 1387 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
f4c9a131
YB		 1388 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1389 &ldio->sgl);
1390 } else if (IS_DMA64) {
94cd65dd 1391 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
c4a3e0a5
BS		 1392 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1393 } else
1394 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1395
bdc6fb8d
YB		 1396 if (ldio->sge_count > instance->max_num_sge) {
1397 printk(KERN_ERR "megasas: build_ld_io: sge_count = %x\n",
1398 ldio->sge_count);
1399 return 0;
1400 }
1401
c4a3e0a5
BS		 1402 /*
1403 * Sense info specific
1404 */
1405 ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1406 ldio->sense_buf_phys_addr_hi = 0;
94cd65dd 1407 ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
c4a3e0a5 1408
b1df99d9
SP		 1409 /*
1410 * Compute the total number of frames this command consumes. FW uses
1411 * this number to pull sufficient number of frames from host memory.
1412 */
f4c9a131
YB		 1413 cmd->frame_count = megasas_get_frame_count(instance,
1414 ldio->sge_count, IO_FRAME);
c4a3e0a5
BS		 1415
1416 return cmd->frame_count;
1417}
1418
1419/**
7497cde8
SS		 1420 * megasas_cmd_type - Checks if the cmd is for logical drive/sysPD
1421 * and whether it's RW or non RW
cb59aa6a 1422 * @scmd: SCSI command
0d49016b 1423 *
c4a3e0a5 1424 */
7497cde8 1425inline int megasas_cmd_type(struct scsi_cmnd *cmd)
c4a3e0a5 1426{
7497cde8
SS		 1427 int ret;
1428
cb59aa6a
SP		 1429 switch (cmd->cmnd[0]) {
1430 case READ_10:
1431 case WRITE_10:
1432 case READ_12:
1433 case WRITE_12:
1434 case READ_6:
1435 case WRITE_6:
1436 case READ_16:
1437 case WRITE_16:
7497cde8
SS		 1438 ret = (MEGASAS_IS_LOGICAL(cmd)) ?
1439 READ_WRITE_LDIO : READ_WRITE_SYSPDIO;
1440 break;
cb59aa6a 1441 default:
7497cde8
SS		 1442 ret = (MEGASAS_IS_LOGICAL(cmd)) ?
1443 NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO;
c4a3e0a5 1444 }
7497cde8 1445 return ret;
c4a3e0a5
BS		 1446}
1447
658dcedb
SP		 1448 /**
1449 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds
1450 * in FW
1451 * @instance: Adapter soft state
1452 */
1453static inline void
1454megasas_dump_pending_frames(struct megasas_instance *instance)
1455{
1456 struct megasas_cmd *cmd;
1457 int i,n;
1458 union megasas_sgl *mfi_sgl;
1459 struct megasas_io_frame *ldio;
1460 struct megasas_pthru_frame *pthru;
1461 u32 sgcount;
1462 u32 max_cmd = instance->max_fw_cmds;
1463
1464 printk(KERN_ERR "\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1465 printk(KERN_ERR "megasas[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1466 if (IS_DMA64)
1467 printk(KERN_ERR "\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1468 else
1469 printk(KERN_ERR "\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1470
1471 printk(KERN_ERR "megasas[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1472 for (i = 0; i < max_cmd; i++) {
1473 cmd = instance->cmd_list[i];
1474 if(!cmd->scmd)
1475 continue;
1476 printk(KERN_ERR "megasas[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
7497cde8 1477 if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) {
658dcedb
SP		 1478 ldio = (struct megasas_io_frame *)cmd->frame;
1479 mfi_sgl = &ldio->sgl;
1480 sgcount = ldio->sge_count;
94cd65dd
SS		 1481 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1482 " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1483 instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
1484 le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
1485 le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
658dcedb
SP		 1486 }
1487 else {
1488 pthru = (struct megasas_pthru_frame *) cmd->frame;
1489 mfi_sgl = &pthru->sgl;
1490 sgcount = pthru->sge_count;
94cd65dd
SS		 1491 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1492 "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1493 instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
1494 pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
1495 le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
658dcedb
SP		 1496 }
1497 if(megasas_dbg_lvl & MEGASAS_DBG_LVL){
1498 for (n = 0; n < sgcount; n++){
1499 if (IS_DMA64)
94cd65dd
SS		 1500 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%llx ",
1501 le32_to_cpu(mfi_sgl->sge64[n].length),
1502 le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
658dcedb 1503 else
94cd65dd
SS		 1504 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%x ",
1505 le32_to_cpu(mfi_sgl->sge32[n].length),
1506 le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
658dcedb
SP		 1507 }
1508 }
1509 printk(KERN_ERR "\n");
1510 } /*for max_cmd*/
1511 printk(KERN_ERR "\nmegasas[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1512 for (i = 0; i < max_cmd; i++) {
1513
1514 cmd = instance->cmd_list[i];
1515
1516 if(cmd->sync_cmd == 1){
1517 printk(KERN_ERR "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1518 }
1519 }
1520 printk(KERN_ERR "megasas[%d]: Dumping Done.\n\n",instance->host->host_no);
1521}
1522
cd50ba8e
AR		 1523u32
1524megasas_build_and_issue_cmd(struct megasas_instance *instance,
1525 struct scsi_cmnd *scmd)
1526{
1527 struct megasas_cmd *cmd;
1528 u32 frame_count;
1529
1530 cmd = megasas_get_cmd(instance);
1531 if (!cmd)
1532 return SCSI_MLQUEUE_HOST_BUSY;
1533
1534 /*
1535 * Logical drive command
1536 */
7497cde8 1537 if (megasas_cmd_type(scmd) == READ_WRITE_LDIO)
cd50ba8e
AR		 1538 frame_count = megasas_build_ldio(instance, scmd, cmd);
1539 else
1540 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1541
1542 if (!frame_count)
1543 goto out_return_cmd;
1544
1545 cmd->scmd = scmd;
1546 scmd->SCp.ptr = (char *)cmd;
1547
1548 /*
1549 * Issue the command to the FW
1550 */
1551 atomic_inc(&instance->fw_outstanding);
1552
1553 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1554 cmd->frame_count-1, instance->reg_set);
cd50ba8e
AR		 1555
1556 return 0;
1557out_return_cmd:
1558 megasas_return_cmd(instance, cmd);
1559 return 1;
1560}
1561
1562
c4a3e0a5
BS		 1563/**
1564 * megasas_queue_command - Queue entry point
1565 * @scmd: SCSI command to be queued
1566 * @done: Callback entry point
1567 */
1568static int
fb1a24ff 1569megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
c4a3e0a5 1570{
c4a3e0a5 1571 struct megasas_instance *instance;
39a98554 1572 unsigned long flags;
c4a3e0a5
BS		 1573
1574 instance = (struct megasas_instance *)
1575 scmd->device->host->hostdata;
af37acfb 1576
aa00832b
SS		 1577 if (instance->unload == 1) {
1578 scmd->result = DID_NO_CONNECT << 16;
1579 scmd->scsi_done(scmd);
1580 return 0;
1581 }
1582
39a98554 1583 if (instance->issuepend_done == 0)
af37acfb
SP		 1584 return SCSI_MLQUEUE_HOST_BUSY;
1585
39a98554 1586 spin_lock_irqsave(&instance->hba_lock, flags);
b09e66da 1587
229fe47c
AR		 1588 /* Check for an mpio path and adjust behavior */
1589 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) {
1590 if (megasas_check_mpio_paths(instance, scmd) ==
1591 (DID_RESET << 16)) {
1592 spin_unlock_irqrestore(&instance->hba_lock, flags);
1593 return SCSI_MLQUEUE_HOST_BUSY;
1594 } else {
1595 spin_unlock_irqrestore(&instance->hba_lock, flags);
1596 scmd->result = DID_NO_CONNECT << 16;
fb1a24ff 1597 scmd->scsi_done(scmd);
229fe47c
AR		 1598 return 0;
1599 }
1600 }
1601
b09e66da
SS		 1602 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
1603 spin_unlock_irqrestore(&instance->hba_lock, flags);
229fe47c 1604 scmd->result = DID_NO_CONNECT << 16;
fb1a24ff 1605 scmd->scsi_done(scmd);
b09e66da
SS		 1606 return 0;
1607 }
1608
39a98554 1609 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
1610 spin_unlock_irqrestore(&instance->hba_lock, flags);
1611 return SCSI_MLQUEUE_HOST_BUSY;
1612 }
1613
1614 spin_unlock_irqrestore(&instance->hba_lock, flags);
1615
c4a3e0a5
BS		 1616 scmd->result = 0;
1617
cb59aa6a 1618 if (MEGASAS_IS_LOGICAL(scmd) &&
51087a86
SS		 1619 (scmd->device->id >= instance->fw_supported_vd_count ||
1620 scmd->device->lun)) {
cb59aa6a
SP		 1621 scmd->result = DID_BAD_TARGET << 16;
1622 goto out_done;
c4a3e0a5
BS		 1623 }
1624
02b01e01
SP		 1625 switch (scmd->cmnd[0]) {
1626 case SYNCHRONIZE_CACHE:
1627 /*
1628 * FW takes care of flush cache on its own
1629 * No need to send it down
1630 */
1631 scmd->result = DID_OK << 16;
1632 goto out_done;
1633 default:
1634 break;
1635 }
1636
cd50ba8e
AR		 1637 if (instance->instancet->build_and_issue_cmd(instance, scmd)) {
1638 printk(KERN_ERR "megasas: Err returned from build_and_issue_cmd\n");
cb59aa6a 1639 return SCSI_MLQUEUE_HOST_BUSY;
cd50ba8e 1640 }
c4a3e0a5
BS		 1641
1642 return 0;
cb59aa6a 1643
cb59aa6a 1644 out_done:
fb1a24ff 1645 scmd->scsi_done(scmd);
cb59aa6a 1646 return 0;
c4a3e0a5
BS		 1647}
1648
044833b5
YB		 1649static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1650{
1651 int i;
1652
1653 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1654
1655 if ((megasas_mgmt_info.instance[i]) &&
1656 (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1657 return megasas_mgmt_info.instance[i];
1658 }
1659
1660 return NULL;
1661}
1662
147aab6a
CH		 1663static int megasas_slave_configure(struct scsi_device *sdev)
1664{
e5b3a65f 1665 /*
044833b5
YB		 1666 * The RAID firmware may require extended timeouts.
1667 */
1668 blk_queue_rq_timeout(sdev->request_queue,
1669 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
07e38d94 1670
044833b5
YB		 1671 return 0;
1672}
1673
1674static int megasas_slave_alloc(struct scsi_device *sdev)
1675{
1676 u16 pd_index = 0;
1677 struct megasas_instance *instance ;
1678 instance = megasas_lookup_instance(sdev->host->host_no);
07e38d94 1679 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS) {
044833b5
YB		 1680 /*
1681 * Open the OS scan to the SYSTEM PD
1682 */
1683 pd_index =
1684 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1685 sdev->id;
07e38d94
SS		 1686 if (instance->pd_list[pd_index].driveState ==
1687 MR_PD_STATE_SYSTEM) {
044833b5
YB		 1688 return 0;
1689 }
1690 return -ENXIO;
1691 }
147aab6a
CH		 1692 return 0;
1693}
1694
c8dd61ef
SS		 1695/*
1696* megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a
1697* kill adapter
1698* @instance: Adapter soft state
1699*
1700*/
1701void megasas_complete_outstanding_ioctls(struct megasas_instance *instance)
1702{
1703 int i;
1704 struct megasas_cmd *cmd_mfi;
1705 struct megasas_cmd_fusion *cmd_fusion;
1706 struct fusion_context *fusion = instance->ctrl_context;
1707
1708 /* Find all outstanding ioctls */
1709 if (fusion) {
1710 for (i = 0; i < instance->max_fw_cmds; i++) {
1711 cmd_fusion = fusion->cmd_list[i];
1712 if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) {
1713 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
1714 if (cmd_mfi->sync_cmd &&
1715 cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)
1716 megasas_complete_cmd(instance,
1717 cmd_mfi, DID_OK);
1718 }
1719 }
1720 } else {
1721 for (i = 0; i < instance->max_fw_cmds; i++) {
1722 cmd_mfi = instance->cmd_list[i];
1723 if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd !=
1724 MFI_CMD_ABORT)
1725 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
1726 }
1727 }
1728}
1729
1730
9c915a8c 1731void megaraid_sas_kill_hba(struct megasas_instance *instance)
39a98554 1732{
c8dd61ef
SS		 1733 /* Set critical error to block I/O & ioctls in case caller didn't */
1734 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
1735 /* Wait 1 second to ensure IO or ioctls in build have posted */
1736 msleep(1000);
39a98554 1737 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
c8dd61ef
SS		 1738 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
1739 (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
1740 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
1741 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
1742 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
1743 writel(MFI_STOP_ADP,
1744 &instance->reg_set->doorbell);
229fe47c
AR		 1745 /* Flush */
1746 readl(&instance->reg_set->doorbell);
1747 if (instance->mpio && instance->requestorId)
1748 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
39a98554 1749 } else {
c8dd61ef
SS		 1750 writel(MFI_STOP_ADP,
1751 &instance->reg_set->inbound_doorbell);
9c915a8c 1752 }
c8dd61ef
SS		 1753 /* Complete outstanding ioctls when adapter is killed */
1754 megasas_complete_outstanding_ioctls(instance);
9c915a8c
AR		 1755}
1756
1757 /**
1758 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
1759 * restored to max value
1760 * @instance: Adapter soft state
1761 *
1762 */
1763void
1764megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
1765{
1766 unsigned long flags;
ae09a6c1 1767
9c915a8c 1768 if (instance->flag & MEGASAS_FW_BUSY
c5daa6a9
AR		 1769 && time_after(jiffies, instance->last_time + 5 * HZ)
1770 && atomic_read(&instance->fw_outstanding) <
1771 instance->throttlequeuedepth + 1) {
9c915a8c
AR		 1772
1773 spin_lock_irqsave(instance->host->host_lock, flags);
1774 instance->flag &= ~MEGASAS_FW_BUSY;
9c915a8c 1775
ae09a6c1 1776 instance->host->can_queue = instance->max_scsi_cmds;
9c915a8c 1777 spin_unlock_irqrestore(instance->host->host_lock, flags);
39a98554 1778 }
1779}
1780
7343eb65 1781/**
1782 * megasas_complete_cmd_dpc - Returns FW's controller structure
1783 * @instance_addr: Address of adapter soft state
1784 *
1785 * Tasklet to complete cmds
1786 */
1787static void megasas_complete_cmd_dpc(unsigned long instance_addr)
1788{
1789 u32 producer;
1790 u32 consumer;
1791 u32 context;
1792 struct megasas_cmd *cmd;
1793 struct megasas_instance *instance =
1794 (struct megasas_instance *)instance_addr;
1795 unsigned long flags;
1796
1797 /* If we have already declared adapter dead, donot complete cmds */
39a98554 1798 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR )
7343eb65 1799 return;
1800
1801 spin_lock_irqsave(&instance->completion_lock, flags);
1802
94cd65dd
SS		 1803 producer = le32_to_cpu(*instance->producer);
1804 consumer = le32_to_cpu(*instance->consumer);
7343eb65 1805
1806 while (consumer != producer) {
94cd65dd 1807 context = le32_to_cpu(instance->reply_queue[consumer]);
39a98554 1808 if (context >= instance->max_fw_cmds) {
1809 printk(KERN_ERR "Unexpected context value %x\n",
1810 context);
1811 BUG();
1812 }
7343eb65 1813
1814 cmd = instance->cmd_list[context];
1815
1816 megasas_complete_cmd(instance, cmd, DID_OK);
1817
1818 consumer++;
1819 if (consumer == (instance->max_fw_cmds + 1)) {
1820 consumer = 0;
1821 }
1822 }
1823
94cd65dd 1824 *instance->consumer = cpu_to_le32(producer);
7343eb65 1825
1826 spin_unlock_irqrestore(&instance->completion_lock, flags);
1827
1828 /*
1829 * Check if we can restore can_queue
1830 */
9c915a8c 1831 megasas_check_and_restore_queue_depth(instance);
7343eb65 1832}
1833
229fe47c
AR		 1834/**
1835 * megasas_start_timer - Initializes a timer object
1836 * @instance: Adapter soft state
1837 * @timer: timer object to be initialized
1838 * @fn: timer function
1839 * @interval: time interval between timer function call
1840 *
1841 */
1842void megasas_start_timer(struct megasas_instance *instance,
1843 struct timer_list *timer,
1844 void *fn, unsigned long interval)
1845{
1846 init_timer(timer);
1847 timer->expires = jiffies + interval;
1848 timer->data = (unsigned long)instance;
1849 timer->function = fn;
1850 add_timer(timer);
1851}
1852
707e09bd
YB		 1853static void
1854megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
1855
1856static void
1857process_fw_state_change_wq(struct work_struct *work);
1858
1859void megasas_do_ocr(struct megasas_instance *instance)
1860{
1861 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
1862 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
1863 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
94cd65dd 1864 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
707e09bd 1865 }
d46a3ad6 1866 instance->instancet->disable_intr(instance);
707e09bd
YB		 1867 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
1868 instance->issuepend_done = 0;
1869
1870 atomic_set(&instance->fw_outstanding, 0);
1871 megasas_internal_reset_defer_cmds(instance);
1872 process_fw_state_change_wq(&instance->work_init);
1873}
1874
4cbfea88
AR		 1875static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
1876 int initial)
229fe47c
AR		 1877{
1878 struct megasas_cmd *cmd;
1879 struct megasas_dcmd_frame *dcmd;
229fe47c 1880 struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
229fe47c
AR		 1881 dma_addr_t new_affiliation_111_h;
1882 int ld, retval = 0;
1883 u8 thisVf;
1884
1885 cmd = megasas_get_cmd(instance);
1886
1887 if (!cmd) {
4cbfea88
AR		 1888 printk(KERN_DEBUG "megasas: megasas_get_ld_vf_affiliation_111:"
1889 "Failed to get cmd for scsi%d.\n",
229fe47c
AR		 1890 instance->host->host_no);
1891 return -ENOMEM;
1892 }
1893
1894 dcmd = &cmd->frame->dcmd;
1895
4cbfea88 1896 if (!instance->vf_affiliation_111) {
229fe47c
AR		 1897 printk(KERN_WARNING "megasas: SR-IOV: Couldn't get LD/VF "
1898 "affiliation for scsi%d.\n", instance->host->host_no);
1899 megasas_return_cmd(instance, cmd);
1900 return -ENOMEM;
1901 }
1902
1903 if (initial)
229fe47c
AR		 1904 memset(instance->vf_affiliation_111, 0,
1905 sizeof(struct MR_LD_VF_AFFILIATION_111));
229fe47c 1906 else {
4cbfea88
AR		 1907 new_affiliation_111 =
1908 pci_alloc_consistent(instance->pdev,
1909 sizeof(struct MR_LD_VF_AFFILIATION_111),
1910 &new_affiliation_111_h);
1911 if (!new_affiliation_111) {
229fe47c
AR		 1912 printk(KERN_DEBUG "megasas: SR-IOV: Couldn't allocate "
1913 "memory for new affiliation for scsi%d.\n",
4cbfea88 1914 instance->host->host_no);
229fe47c
AR		 1915 megasas_return_cmd(instance, cmd);
1916 return -ENOMEM;
1917 }
4cbfea88
AR		 1918 memset(new_affiliation_111, 0,
1919 sizeof(struct MR_LD_VF_AFFILIATION_111));
229fe47c
AR		 1920 }
1921
1922 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1923
1924 dcmd->cmd = MFI_CMD_DCMD;
1925 dcmd->cmd_status = 0xFF;
1926 dcmd->sge_count = 1;
1927 dcmd->flags = MFI_FRAME_DIR_BOTH;
1928 dcmd->timeout = 0;
1929 dcmd->pad_0 = 0;
4cbfea88
AR		 1930 dcmd->data_xfer_len = sizeof(struct MR_LD_VF_AFFILIATION_111);
1931 dcmd->opcode = MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111;
229fe47c 1932
4cbfea88
AR		 1933 if (initial)
1934 dcmd->sgl.sge32[0].phys_addr =
1935 instance->vf_affiliation_111_h;
229fe47c 1936 else
4cbfea88
AR		 1937 dcmd->sgl.sge32[0].phys_addr = new_affiliation_111_h;
1938
1939 dcmd->sgl.sge32[0].length =
1940 sizeof(struct MR_LD_VF_AFFILIATION_111);
229fe47c
AR		 1941
1942 printk(KERN_WARNING "megasas: SR-IOV: Getting LD/VF affiliation for "
1943 "scsi%d\n", instance->host->host_no);
1944
1945 megasas_issue_blocked_cmd(instance, cmd, 0);
1946
1947 if (dcmd->cmd_status) {
1948 printk(KERN_WARNING "megasas: SR-IOV: LD/VF affiliation DCMD"
1949 " failed with status 0x%x for scsi%d.\n",
1950 dcmd->cmd_status, instance->host->host_no);
1951 retval = 1; /* Do a scan if we couldn't get affiliation */
1952 goto out;
1953 }
1954
1955 if (!initial) {
4cbfea88
AR		 1956 thisVf = new_affiliation_111->thisVf;
1957 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
1958 if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
1959 new_affiliation_111->map[ld].policy[thisVf]) {
1960 printk(KERN_WARNING "megasas: SR-IOV: "
1961 "Got new LD/VF affiliation "
229fe47c 1962 "for scsi%d.\n",
229fe47c 1963 instance->host->host_no);
4cbfea88
AR		 1964 memcpy(instance->vf_affiliation_111,
1965 new_affiliation_111,
1966 sizeof(struct MR_LD_VF_AFFILIATION_111));
229fe47c
AR		 1967 retval = 1;
1968 goto out;
1969 }
4cbfea88
AR		 1970 }
1971out:
1972 if (new_affiliation_111) {
1973 pci_free_consistent(instance->pdev,
1974 sizeof(struct MR_LD_VF_AFFILIATION_111),
1975 new_affiliation_111,
1976 new_affiliation_111_h);
1977 }
90dc9d98
SS		 1978
1979 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
1980 megasas_return_mfi_mpt_pthr(instance, cmd,
1981 cmd->mpt_pthr_cmd_blocked);
1982 else
1983 megasas_return_cmd(instance, cmd);
4cbfea88
AR		 1984
1985 return retval;
1986}
1987
1988static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
1989 int initial)
1990{
1991 struct megasas_cmd *cmd;
1992 struct megasas_dcmd_frame *dcmd;
1993 struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
1994 struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
1995 dma_addr_t new_affiliation_h;
1996 int i, j, retval = 0, found = 0, doscan = 0;
1997 u8 thisVf;
1998
1999 cmd = megasas_get_cmd(instance);
2000
2001 if (!cmd) {
2002 printk(KERN_DEBUG "megasas: megasas_get_ld_vf_affiliation12: "
2003 "Failed to get cmd for scsi%d.\n",
2004 instance->host->host_no);
2005 return -ENOMEM;
2006 }
2007
2008 dcmd = &cmd->frame->dcmd;
2009
2010 if (!instance->vf_affiliation) {
2011 printk(KERN_WARNING "megasas: SR-IOV: Couldn't get LD/VF "
2012 "affiliation for scsi%d.\n", instance->host->host_no);
2013 megasas_return_cmd(instance, cmd);
2014 return -ENOMEM;
2015 }
2016
2017 if (initial)
2018 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2019 sizeof(struct MR_LD_VF_AFFILIATION));
2020 else {
2021 new_affiliation =
2022 pci_alloc_consistent(instance->pdev,
2023 (MAX_LOGICAL_DRIVES + 1) *
2024 sizeof(struct MR_LD_VF_AFFILIATION),
2025 &new_affiliation_h);
2026 if (!new_affiliation) {
2027 printk(KERN_DEBUG "megasas: SR-IOV: Couldn't allocate "
2028 "memory for new affiliation for scsi%d.\n",
2029 instance->host->host_no);
2030 megasas_return_cmd(instance, cmd);
2031 return -ENOMEM;
2032 }
2033 memset(new_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2034 sizeof(struct MR_LD_VF_AFFILIATION));
2035 }
2036
2037 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2038
2039 dcmd->cmd = MFI_CMD_DCMD;
2040 dcmd->cmd_status = 0xFF;
2041 dcmd->sge_count = 1;
2042 dcmd->flags = MFI_FRAME_DIR_BOTH;
2043 dcmd->timeout = 0;
2044 dcmd->pad_0 = 0;
2045 dcmd->data_xfer_len = (MAX_LOGICAL_DRIVES + 1) *
2046 sizeof(struct MR_LD_VF_AFFILIATION);
2047 dcmd->opcode = MR_DCMD_LD_VF_MAP_GET_ALL_LDS;
2048
2049 if (initial)
2050 dcmd->sgl.sge32[0].phys_addr = instance->vf_affiliation_h;
2051 else
2052 dcmd->sgl.sge32[0].phys_addr = new_affiliation_h;
2053
2054 dcmd->sgl.sge32[0].length = (MAX_LOGICAL_DRIVES + 1) *
2055 sizeof(struct MR_LD_VF_AFFILIATION);
2056
2057 printk(KERN_WARNING "megasas: SR-IOV: Getting LD/VF affiliation for "
2058 "scsi%d\n", instance->host->host_no);
2059
2060 megasas_issue_blocked_cmd(instance, cmd, 0);
2061
2062 if (dcmd->cmd_status) {
2063 printk(KERN_WARNING "megasas: SR-IOV: LD/VF affiliation DCMD"
2064 " failed with status 0x%x for scsi%d.\n",
2065 dcmd->cmd_status, instance->host->host_no);
2066 retval = 1; /* Do a scan if we couldn't get affiliation */
2067 goto out;
2068 }
2069
2070 if (!initial) {
2071 if (!new_affiliation->ldCount) {
2072 printk(KERN_WARNING "megasas: SR-IOV: Got new LD/VF "
2073 "affiliation for passive path for scsi%d.\n",
2074 instance->host->host_no);
2075 retval = 1;
2076 goto out;
2077 }
2078 newmap = new_affiliation->map;
2079 savedmap = instance->vf_affiliation->map;
2080 thisVf = new_affiliation->thisVf;
2081 for (i = 0 ; i < new_affiliation->ldCount; i++) {
2082 found = 0;
2083 for (j = 0; j < instance->vf_affiliation->ldCount;
2084 j++) {
2085 if (newmap->ref.targetId ==
2086 savedmap->ref.targetId) {
2087 found = 1;
2088 if (newmap->policy[thisVf] !=
2089 savedmap->policy[thisVf]) {
2090 doscan = 1;
2091 goto out;
2092 }
229fe47c
AR		 2093 }
2094 savedmap = (struct MR_LD_VF_MAP *)
2095 ((unsigned char *)savedmap +
2096 savedmap->size);
4cbfea88
AR		 2097 }
2098 if (!found && newmap->policy[thisVf] !=
2099 MR_LD_ACCESS_HIDDEN) {
2100 doscan = 1;
2101 goto out;
2102 }
2103 newmap = (struct MR_LD_VF_MAP *)
2104 ((unsigned char *)newmap + newmap->size);
2105 }
2106
2107 newmap = new_affiliation->map;
2108 savedmap = instance->vf_affiliation->map;
2109
2110 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
2111 found = 0;
2112 for (j = 0 ; j < new_affiliation->ldCount; j++) {
2113 if (savedmap->ref.targetId ==
2114 newmap->ref.targetId) {
2115 found = 1;
2116 if (savedmap->policy[thisVf] !=
2117 newmap->policy[thisVf]) {
2118 doscan = 1;
2119 goto out;
2120 }
2121 }
229fe47c
AR		 2122 newmap = (struct MR_LD_VF_MAP *)
2123 ((unsigned char *)newmap +
2124 newmap->size);
2125 }
4cbfea88
AR		 2126 if (!found && savedmap->policy[thisVf] !=
2127 MR_LD_ACCESS_HIDDEN) {
2128 doscan = 1;
2129 goto out;
2130 }
2131 savedmap = (struct MR_LD_VF_MAP *)
2132 ((unsigned char *)savedmap +
2133 savedmap->size);
229fe47c
AR		 2134 }
2135 }
2136out:
4cbfea88
AR		 2137 if (doscan) {
2138 printk(KERN_WARNING "megasas: SR-IOV: Got new LD/VF "
2139 "affiliation for scsi%d.\n", instance->host->host_no);
2140 memcpy(instance->vf_affiliation, new_affiliation,
2141 new_affiliation->size);
2142 retval = 1;
229fe47c 2143 }
4cbfea88
AR		 2144
2145 if (new_affiliation)
2146 pci_free_consistent(instance->pdev,
2147 (MAX_LOGICAL_DRIVES + 1) *
2148 sizeof(struct MR_LD_VF_AFFILIATION),
2149 new_affiliation, new_affiliation_h);
90dc9d98
SS		 2150 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
2151 megasas_return_mfi_mpt_pthr(instance, cmd,
2152 cmd->mpt_pthr_cmd_blocked);
2153 else
2154 megasas_return_cmd(instance, cmd);
229fe47c
AR		 2155
2156 return retval;
2157}
2158
4cbfea88
AR		 2159/* This function will get the current SR-IOV LD/VF affiliation */
2160static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
2161 int initial)
2162{
2163 int retval;
2164
2165 if (instance->PlasmaFW111)
2166 retval = megasas_get_ld_vf_affiliation_111(instance, initial);
2167 else
2168 retval = megasas_get_ld_vf_affiliation_12(instance, initial);
2169 return retval;
2170}
2171
229fe47c
AR		 2172/* This function will tell FW to start the SR-IOV heartbeat */
2173int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2174 int initial)
2175{
2176 struct megasas_cmd *cmd;
2177 struct megasas_dcmd_frame *dcmd;
2178 int retval = 0;
2179
2180 cmd = megasas_get_cmd(instance);
2181
2182 if (!cmd) {
2183 printk(KERN_DEBUG "megasas: megasas_sriov_start_heartbeat: "
2184 "Failed to get cmd for scsi%d.\n",
2185 instance->host->host_no);
2186 return -ENOMEM;
2187 }
2188
2189 dcmd = &cmd->frame->dcmd;
2190
2191 if (initial) {
2192 instance->hb_host_mem =
7c845eb5
JP		 2193 pci_zalloc_consistent(instance->pdev,
2194 sizeof(struct MR_CTRL_HB_HOST_MEM),
2195 &instance->hb_host_mem_h);
229fe47c
AR		 2196 if (!instance->hb_host_mem) {
2197 printk(KERN_DEBUG "megasas: SR-IOV: Couldn't allocate"
2198 " memory for heartbeat host memory for "
2199 "scsi%d.\n", instance->host->host_no);
2200 retval = -ENOMEM;
2201 goto out;
2202 }
229fe47c
AR		 2203 }
2204
2205 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2206
2207 dcmd->mbox.s[0] = sizeof(struct MR_CTRL_HB_HOST_MEM);
2208 dcmd->cmd = MFI_CMD_DCMD;
2209 dcmd->cmd_status = 0xFF;
2210 dcmd->sge_count = 1;
2211 dcmd->flags = MFI_FRAME_DIR_BOTH;
2212 dcmd->timeout = 0;
2213 dcmd->pad_0 = 0;
2214 dcmd->data_xfer_len = sizeof(struct MR_CTRL_HB_HOST_MEM);
2215 dcmd->opcode = MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC;
2216 dcmd->sgl.sge32[0].phys_addr = instance->hb_host_mem_h;
2217 dcmd->sgl.sge32[0].length = sizeof(struct MR_CTRL_HB_HOST_MEM);
2218
2219 printk(KERN_WARNING "megasas: SR-IOV: Starting heartbeat for scsi%d\n",
2220 instance->host->host_no);
2221
2222 if (!megasas_issue_polled(instance, cmd)) {
2223 retval = 0;
2224 } else {
2225 printk(KERN_WARNING "megasas: SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2226 "_MEM_ALLOC DCMD timed out for scsi%d\n",
2227 instance->host->host_no);
2228 retval = 1;
2229 goto out;
2230 }
2231
2232
2233 if (dcmd->cmd_status) {
2234 printk(KERN_WARNING "megasas: SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2235 "_MEM_ALLOC DCMD failed with status 0x%x for scsi%d\n",
2236 dcmd->cmd_status,
2237 instance->host->host_no);
2238 retval = 1;
2239 goto out;
2240 }
2241
2242out:
2243 megasas_return_cmd(instance, cmd);
2244
2245 return retval;
2246}
2247
2248/* Handler for SR-IOV heartbeat */
2249void megasas_sriov_heartbeat_handler(unsigned long instance_addr)
2250{
2251 struct megasas_instance *instance =
2252 (struct megasas_instance *)instance_addr;
2253
2254 if (instance->hb_host_mem->HB.fwCounter !=
2255 instance->hb_host_mem->HB.driverCounter) {
2256 instance->hb_host_mem->HB.driverCounter =
2257 instance->hb_host_mem->HB.fwCounter;
2258 mod_timer(&instance->sriov_heartbeat_timer,
2259 jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2260 } else {
2261 printk(KERN_WARNING "megasas: SR-IOV: Heartbeat never "
2262 "completed for scsi%d\n", instance->host->host_no);
2263 schedule_work(&instance->work_init);
2264 }
2265}
2266
c4a3e0a5
BS		 2267/**
2268 * megasas_wait_for_outstanding - Wait for all outstanding cmds
2269 * @instance: Adapter soft state
2270 *
25985edc 2271 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
c4a3e0a5
BS		 2272 * complete all its outstanding commands. Returns error if one or more IOs
2273 * are pending after this time period. It also marks the controller dead.
2274 */
2275static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2276{
2277 int i;
39a98554 2278 u32 reset_index;
c4a3e0a5 2279 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
39a98554 2280 u8 adprecovery;
2281 unsigned long flags;
2282 struct list_head clist_local;
2283 struct megasas_cmd *reset_cmd;
707e09bd
YB		 2284 u32 fw_state;
2285 u8 kill_adapter_flag;
39a98554 2286
2287 spin_lock_irqsave(&instance->hba_lock, flags);
2288 adprecovery = instance->adprecovery;
2289 spin_unlock_irqrestore(&instance->hba_lock, flags);
2290
2291 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
2292
2293 INIT_LIST_HEAD(&clist_local);
2294 spin_lock_irqsave(&instance->hba_lock, flags);
2295 list_splice_init(&instance->internal_reset_pending_q,
2296 &clist_local);
2297 spin_unlock_irqrestore(&instance->hba_lock, flags);
2298
2299 printk(KERN_NOTICE "megasas: HBA reset wait ...\n");
2300 for (i = 0; i < wait_time; i++) {
2301 msleep(1000);
2302 spin_lock_irqsave(&instance->hba_lock, flags);
2303 adprecovery = instance->adprecovery;
2304 spin_unlock_irqrestore(&instance->hba_lock, flags);
2305 if (adprecovery == MEGASAS_HBA_OPERATIONAL)
2306 break;
2307 }
2308
2309 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
2310 printk(KERN_NOTICE "megasas: reset: Stopping HBA.\n");
2311 spin_lock_irqsave(&instance->hba_lock, flags);
2312 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2313 spin_unlock_irqrestore(&instance->hba_lock, flags);
2314 return FAILED;
2315 }
2316
2317 reset_index = 0;
2318 while (!list_empty(&clist_local)) {
2319 reset_cmd = list_entry((&clist_local)->next,
2320 struct megasas_cmd, list);
2321 list_del_init(&reset_cmd->list);
2322 if (reset_cmd->scmd) {
2323 reset_cmd->scmd->result = DID_RESET << 16;
5cd049a5 2324 printk(KERN_NOTICE "%d:%p reset [%02x]\n",
39a98554 2325 reset_index, reset_cmd,
5cd049a5 2326 reset_cmd->scmd->cmnd[0]);
39a98554 2327
2328 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
2329 megasas_return_cmd(instance, reset_cmd);
2330 } else if (reset_cmd->sync_cmd) {
2331 printk(KERN_NOTICE "megasas:%p synch cmds"
2332 "reset queue\n",
2333 reset_cmd);
2334
2335 reset_cmd->cmd_status = ENODATA;
2336 instance->instancet->fire_cmd(instance,
2337 reset_cmd->frame_phys_addr,
2338 0, instance->reg_set);
2339 } else {
2340 printk(KERN_NOTICE "megasas: %p unexpected"
2341 "cmds lst\n",
2342 reset_cmd);
2343 }
2344 reset_index++;
2345 }
2346
2347 return SUCCESS;
2348 }
c4a3e0a5 2349
c007b8b2 2350 for (i = 0; i < resetwaittime; i++) {
c4a3e0a5 2351
e4a082c7
SP		 2352 int outstanding = atomic_read(&instance->fw_outstanding);
2353
2354 if (!outstanding)
c4a3e0a5
BS		 2355 break;
2356
2357 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2358 printk(KERN_NOTICE "megasas: [%2d]waiting for %d "
e4a082c7 2359 "commands to complete\n",i,outstanding);
7343eb65 2360 /*
2361 * Call cmd completion routine. Cmd to be
2362 * be completed directly without depending on isr.
2363 */
2364 megasas_complete_cmd_dpc((unsigned long)instance);
c4a3e0a5
BS		 2365 }
2366
2367 msleep(1000);
2368 }
2369
707e09bd
YB		 2370 i = 0;
2371 kill_adapter_flag = 0;
2372 do {
2373 fw_state = instance->instancet->read_fw_status_reg(
2374 instance->reg_set) & MFI_STATE_MASK;
2375 if ((fw_state == MFI_STATE_FAULT) &&
2376 (instance->disableOnlineCtrlReset == 0)) {
2377 if (i == 3) {
2378 kill_adapter_flag = 2;
2379 break;
2380 }
2381 megasas_do_ocr(instance);
2382 kill_adapter_flag = 1;
2383
2384 /* wait for 1 secs to let FW finish the pending cmds */
2385 msleep(1000);
2386 }
2387 i++;
2388 } while (i <= 3);
2389
2390 if (atomic_read(&instance->fw_outstanding) &&
2391 !kill_adapter_flag) {
2392 if (instance->disableOnlineCtrlReset == 0) {
2393
2394 megasas_do_ocr(instance);
2395
2396 /* wait for 5 secs to let FW finish the pending cmds */
2397 for (i = 0; i < wait_time; i++) {
2398 int outstanding =
2399 atomic_read(&instance->fw_outstanding);
2400 if (!outstanding)
2401 return SUCCESS;
2402 msleep(1000);
2403 }
2404 }
2405 }
2406
2407 if (atomic_read(&instance->fw_outstanding) ||
2408 (kill_adapter_flag == 2)) {
39a98554 2409 printk(KERN_NOTICE "megaraid_sas: pending cmds after reset\n");
e3bbff9f
SP		 2410 /*
2411 * Send signal to FW to stop processing any pending cmds.
2412 * The controller will be taken offline by the OS now.
2413 */
0c79e681
YB		 2414 if ((instance->pdev->device ==
2415 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2416 (instance->pdev->device ==
2417 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
2418 writel(MFI_STOP_ADP,
9c915a8c 2419 &instance->reg_set->doorbell);
0c79e681
YB		 2420 } else {
2421 writel(MFI_STOP_ADP,
e3bbff9f 2422 &instance->reg_set->inbound_doorbell);
0c79e681 2423 }
658dcedb 2424 megasas_dump_pending_frames(instance);
39a98554 2425 spin_lock_irqsave(&instance->hba_lock, flags);
2426 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2427 spin_unlock_irqrestore(&instance->hba_lock, flags);
c4a3e0a5
BS		 2428 return FAILED;
2429 }
2430
39a98554 2431 printk(KERN_NOTICE "megaraid_sas: no pending cmds after reset\n");
2432
c4a3e0a5
BS		 2433 return SUCCESS;
2434}
2435
2436/**
2437 * megasas_generic_reset - Generic reset routine
2438 * @scmd: Mid-layer SCSI command
2439 *
2440 * This routine implements a generic reset handler for device, bus and host
2441 * reset requests. Device, bus and host specific reset handlers can use this
2442 * function after they do their specific tasks.
2443 */
2444static int megasas_generic_reset(struct scsi_cmnd *scmd)
2445{
2446 int ret_val;
2447 struct megasas_instance *instance;
2448
2449 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2450
5cd049a5
CH		 2451 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2452 scmd->cmnd[0], scmd->retries);
c4a3e0a5 2453
39a98554 2454 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
c4a3e0a5
BS		 2455 printk(KERN_ERR "megasas: cannot recover from previous reset "
2456 "failures\n");
2457 return FAILED;
2458 }
2459
c4a3e0a5 2460 ret_val = megasas_wait_for_outstanding(instance);
c4a3e0a5
BS		 2461 if (ret_val == SUCCESS)
2462 printk(KERN_NOTICE "megasas: reset successful \n");
2463 else
2464 printk(KERN_ERR "megasas: failed to do reset\n");
2465
c4a3e0a5
BS		 2466 return ret_val;
2467}
2468
05e9ebbe
SP		 2469/**
2470 * megasas_reset_timer - quiesce the adapter if required
2471 * @scmd: scsi cmnd
2472 *
2473 * Sets the FW busy flag and reduces the host->can_queue if the
2474 * cmd has not been completed within the timeout period.
2475 */
2476static enum
242f9dcb 2477blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
05e9ebbe 2478{
05e9ebbe
SP		 2479 struct megasas_instance *instance;
2480 unsigned long flags;
2481
2482 if (time_after(jiffies, scmd->jiffies_at_alloc +
2483 (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) {
242f9dcb 2484 return BLK_EH_NOT_HANDLED;
05e9ebbe
SP		 2485 }
2486
f575c5d3 2487 instance = (struct megasas_instance *)scmd->device->host->hostdata;
05e9ebbe
SP		 2488 if (!(instance->flag & MEGASAS_FW_BUSY)) {
2489 /* FW is busy, throttle IO */
2490 spin_lock_irqsave(instance->host->host_lock, flags);
2491
c5daa6a9 2492 instance->host->can_queue = instance->throttlequeuedepth;
05e9ebbe
SP		 2493 instance->last_time = jiffies;
2494 instance->flag |= MEGASAS_FW_BUSY;
2495
2496 spin_unlock_irqrestore(instance->host->host_lock, flags);
2497 }
242f9dcb 2498 return BLK_EH_RESET_TIMER;
05e9ebbe
SP		 2499}
2500
c4a3e0a5
BS		 2501/**
2502 * megasas_reset_device - Device reset handler entry point
2503 */
2504static int megasas_reset_device(struct scsi_cmnd *scmd)
2505{
2506 int ret;
2507
2508 /*
2509 * First wait for all commands to complete
2510 */
2511 ret = megasas_generic_reset(scmd);
2512
2513 return ret;
2514}
2515
2516/**
2517 * megasas_reset_bus_host - Bus & host reset handler entry point
2518 */
2519static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
2520{
2521 int ret;
9c915a8c
AR		 2522 struct megasas_instance *instance;
2523 instance = (struct megasas_instance *)scmd->device->host->hostdata;
c4a3e0a5
BS		 2524
2525 /*
80682fa9 2526 * First wait for all commands to complete
c4a3e0a5 2527 */
36807e67 2528 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
229fe47c 2529 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
21d3c710
SS		 2530 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
2531 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
229fe47c 2532 ret = megasas_reset_fusion(scmd->device->host, 1);
9c915a8c
AR		 2533 else
2534 ret = megasas_generic_reset(scmd);
c4a3e0a5
BS		 2535
2536 return ret;
2537}
2538
cf62a0a5
SP		 2539/**
2540 * megasas_bios_param - Returns disk geometry for a disk
2541 * @sdev: device handle
2542 * @bdev: block device
2543 * @capacity: drive capacity
2544 * @geom: geometry parameters
2545 */
2546static int
2547megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
2548 sector_t capacity, int geom[])
2549{
2550 int heads;
2551 int sectors;
2552 sector_t cylinders;
2553 unsigned long tmp;
2554 /* Default heads (64) & sectors (32) */
2555 heads = 64;
2556 sectors = 32;
2557
2558 tmp = heads * sectors;
2559 cylinders = capacity;
2560
2561 sector_div(cylinders, tmp);
2562
2563 /*
2564 * Handle extended translation size for logical drives > 1Gb
2565 */
2566
2567 if (capacity >= 0x200000) {
2568 heads = 255;
2569 sectors = 63;
2570 tmp = heads*sectors;
2571 cylinders = capacity;
2572 sector_div(cylinders, tmp);
2573 }
2574
2575 geom[0] = heads;
2576 geom[1] = sectors;
2577 geom[2] = cylinders;
2578
2579 return 0;
2580}
2581
7e8a75f4
YB		 2582static void megasas_aen_polling(struct work_struct *work);
2583
c4a3e0a5
BS		 2584/**
2585 * megasas_service_aen - Processes an event notification
2586 * @instance: Adapter soft state
2587 * @cmd: AEN command completed by the ISR
2588 *
2589 * For AEN, driver sends a command down to FW that is held by the FW till an
2590 * event occurs. When an event of interest occurs, FW completes the command
2591 * that it was previously holding.
2592 *
2593 * This routines sends SIGIO signal to processes that have registered with the
2594 * driver for AEN.
2595 */
2596static void
2597megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
2598{
c3518837 2599 unsigned long flags;
c4a3e0a5
BS		 2600 /*
2601 * Don't signal app if it is just an aborted previously registered aen
2602 */
c3518837
YB		 2603 if ((!cmd->abort_aen) && (instance->unload == 0)) {
2604 spin_lock_irqsave(&poll_aen_lock, flags);
2605 megasas_poll_wait_aen = 1;
2606 spin_unlock_irqrestore(&poll_aen_lock, flags);
2607 wake_up(&megasas_poll_wait);
c4a3e0a5 2608 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
c3518837 2609 }
c4a3e0a5
BS		 2610 else
2611 cmd->abort_aen = 0;
2612
2613 instance->aen_cmd = NULL;
90dc9d98
SS		 2614
2615 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
2616 megasas_return_mfi_mpt_pthr(instance, cmd,
2617 cmd->mpt_pthr_cmd_blocked);
2618 else
2619 megasas_return_cmd(instance, cmd);
7e8a75f4 2620
39a98554 2621 if ((instance->unload == 0) &&
2622 ((instance->issuepend_done == 1))) {
7e8a75f4
YB		 2623 struct megasas_aen_event *ev;
2624 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
2625 if (!ev) {
2626 printk(KERN_ERR "megasas_service_aen: out of memory\n");
2627 } else {
2628 ev->instance = instance;
2629 instance->ev = ev;
c1d390d8
XF		 2630 INIT_DELAYED_WORK(&ev->hotplug_work,
2631 megasas_aen_polling);
2632 schedule_delayed_work(&ev->hotplug_work, 0);
7e8a75f4
YB		 2633 }
2634 }
c4a3e0a5
BS		 2635}
2636
fc62b3fc
SS		 2637static ssize_t
2638megasas_fw_crash_buffer_store(struct device *cdev,
2639 struct device_attribute *attr, const char *buf, size_t count)
2640{
2641 struct Scsi_Host *shost = class_to_shost(cdev);
2642 struct megasas_instance *instance =
2643 (struct megasas_instance *) shost->hostdata;
2644 int val = 0;
2645 unsigned long flags;
2646
2647 if (kstrtoint(buf, 0, &val) != 0)
2648 return -EINVAL;
2649
2650 spin_lock_irqsave(&instance->crashdump_lock, flags);
2651 instance->fw_crash_buffer_offset = val;
2652 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2653 return strlen(buf);
2654}
2655
2656static ssize_t
2657megasas_fw_crash_buffer_show(struct device *cdev,
2658 struct device_attribute *attr, char *buf)
2659{
2660 struct Scsi_Host *shost = class_to_shost(cdev);
2661 struct megasas_instance *instance =
2662 (struct megasas_instance *) shost->hostdata;
2663 u32 size;
2664 unsigned long buff_addr;
2665 unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
2666 unsigned long src_addr;
2667 unsigned long flags;
2668 u32 buff_offset;
2669
2670 spin_lock_irqsave(&instance->crashdump_lock, flags);
2671 buff_offset = instance->fw_crash_buffer_offset;
2672 if (!instance->crash_dump_buf &&
2673 !((instance->fw_crash_state == AVAILABLE) ||
2674 (instance->fw_crash_state == COPYING))) {
2675 dev_err(&instance->pdev->dev,
2676 "Firmware crash dump is not available\n");
2677 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2678 return -EINVAL;
2679 }
2680
2681 buff_addr = (unsigned long) buf;
2682
2683 if (buff_offset >
2684 (instance->fw_crash_buffer_size * dmachunk)) {
2685 dev_err(&instance->pdev->dev,
2686 "Firmware crash dump offset is out of range\n");
2687 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2688 return 0;
2689 }
2690
2691 size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
2692 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
2693
2694 src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
2695 (buff_offset % dmachunk);
2696 memcpy(buf, (void *)src_addr, size);
2697 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2698
2699 return size;
2700}
2701
2702static ssize_t
2703megasas_fw_crash_buffer_size_show(struct device *cdev,
2704 struct device_attribute *attr, char *buf)
2705{
2706 struct Scsi_Host *shost = class_to_shost(cdev);
2707 struct megasas_instance *instance =
2708 (struct megasas_instance *) shost->hostdata;
2709
2710 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
2711 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
2712}
2713
2714static ssize_t
2715megasas_fw_crash_state_store(struct device *cdev,
2716 struct device_attribute *attr, const char *buf, size_t count)
2717{
2718 struct Scsi_Host *shost = class_to_shost(cdev);
2719 struct megasas_instance *instance =
2720 (struct megasas_instance *) shost->hostdata;
2721 int val = 0;
2722 unsigned long flags;
2723
2724 if (kstrtoint(buf, 0, &val) != 0)
2725 return -EINVAL;
2726
2727 if ((val <= AVAILABLE || val > COPY_ERROR)) {
2728 dev_err(&instance->pdev->dev, "application updates invalid "
2729 "firmware crash state\n");
2730 return -EINVAL;
2731 }
2732
2733 instance->fw_crash_state = val;
2734
2735 if ((val == COPIED) || (val == COPY_ERROR)) {
2736 spin_lock_irqsave(&instance->crashdump_lock, flags);
2737 megasas_free_host_crash_buffer(instance);
2738 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2739 if (val == COPY_ERROR)
2740 dev_info(&instance->pdev->dev, "application failed to "
2741 "copy Firmware crash dump\n");
2742 else
2743 dev_info(&instance->pdev->dev, "Firmware crash dump "
2744 "copied successfully\n");
2745 }
2746 return strlen(buf);
2747}
2748
2749static ssize_t
2750megasas_fw_crash_state_show(struct device *cdev,
2751 struct device_attribute *attr, char *buf)
2752{
2753 struct Scsi_Host *shost = class_to_shost(cdev);
2754 struct megasas_instance *instance =
2755 (struct megasas_instance *) shost->hostdata;
2756 return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
2757}
2758
2759static ssize_t
2760megasas_page_size_show(struct device *cdev,
2761 struct device_attribute *attr, char *buf)
2762{
2763 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
2764}
2765
2766static DEVICE_ATTR(fw_crash_buffer, S_IRUGO | S_IWUSR,
2767 megasas_fw_crash_buffer_show, megasas_fw_crash_buffer_store);
2768static DEVICE_ATTR(fw_crash_buffer_size, S_IRUGO,
2769 megasas_fw_crash_buffer_size_show, NULL);
2770static DEVICE_ATTR(fw_crash_state, S_IRUGO | S_IWUSR,
2771 megasas_fw_crash_state_show, megasas_fw_crash_state_store);
2772static DEVICE_ATTR(page_size, S_IRUGO,
2773 megasas_page_size_show, NULL);
2774
2775struct device_attribute *megaraid_host_attrs[] = {
2776 &dev_attr_fw_crash_buffer_size,
2777 &dev_attr_fw_crash_buffer,
2778 &dev_attr_fw_crash_state,
2779 &dev_attr_page_size,
2780 NULL,
2781};
2782
c4a3e0a5
BS		 2783/*
2784 * Scsi host template for megaraid_sas driver
2785 */
2786static struct scsi_host_template megasas_template = {
2787
2788 .module = THIS_MODULE,
f28cd7cf 2789 .name = "LSI SAS based MegaRAID driver",
c4a3e0a5 2790 .proc_name = "megaraid_sas",
147aab6a 2791 .slave_configure = megasas_slave_configure,
044833b5 2792 .slave_alloc = megasas_slave_alloc,
c4a3e0a5
BS		 2793 .queuecommand = megasas_queue_command,
2794 .eh_device_reset_handler = megasas_reset_device,
2795 .eh_bus_reset_handler = megasas_reset_bus_host,
2796 .eh_host_reset_handler = megasas_reset_bus_host,
05e9ebbe 2797 .eh_timed_out = megasas_reset_timer,
fc62b3fc 2798 .shost_attrs = megaraid_host_attrs,
cf62a0a5 2799 .bios_param = megasas_bios_param,
c4a3e0a5 2800 .use_clustering = ENABLE_CLUSTERING,
db5ed4df 2801 .change_queue_depth = scsi_change_queue_depth,
54b2b50c 2802 .no_write_same = 1,
c4a3e0a5
BS		 2803};
2804
2805/**
2806 * megasas_complete_int_cmd - Completes an internal command
2807 * @instance: Adapter soft state
2808 * @cmd: Command to be completed
2809 *
2810 * The megasas_issue_blocked_cmd() function waits for a command to complete
2811 * after it issues a command. This function wakes up that waiting routine by
2812 * calling wake_up() on the wait queue.
2813 */
2814static void
2815megasas_complete_int_cmd(struct megasas_instance *instance,
2816 struct megasas_cmd *cmd)
2817{
2818 cmd->cmd_status = cmd->frame->io.cmd_status;
2819
2820 if (cmd->cmd_status == ENODATA) {
2821 cmd->cmd_status = 0;
2822 }
2823 wake_up(&instance->int_cmd_wait_q);
2824}
2825
2826/**
2827 * megasas_complete_abort - Completes aborting a command
2828 * @instance: Adapter soft state
2829 * @cmd: Cmd that was issued to abort another cmd
2830 *
0d49016b
AR		 2831 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
2832 * after it issues an abort on a previously issued command. This function
c4a3e0a5
BS		 2833 * wakes up all functions waiting on the same wait queue.
2834 */
2835static void
2836megasas_complete_abort(struct megasas_instance *instance,
2837 struct megasas_cmd *cmd)
2838{
2839 if (cmd->sync_cmd) {
2840 cmd->sync_cmd = 0;
2841 cmd->cmd_status = 0;
2842 wake_up(&instance->abort_cmd_wait_q);
2843 }
2844
2845 return;
2846}
2847
c4a3e0a5
BS		 2848/**
2849 * megasas_complete_cmd - Completes a command
2850 * @instance: Adapter soft state
2851 * @cmd: Command to be completed
0d49016b 2852 * @alt_status: If non-zero, use this value as status to
c4a3e0a5
BS		 2853 * SCSI mid-layer instead of the value returned
2854 * by the FW. This should be used if caller wants
2855 * an alternate status (as in the case of aborted
2856 * commands)
2857 */
9c915a8c 2858void
c4a3e0a5
BS		 2859megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
2860 u8 alt_status)
2861{
2862 int exception = 0;
2863 struct megasas_header *hdr = &cmd->frame->hdr;
c3518837 2864 unsigned long flags;
9c915a8c 2865 struct fusion_context *fusion = instance->ctrl_context;
94cd65dd 2866 u32 opcode;
c4a3e0a5 2867
39a98554 2868 /* flag for the retry reset */
2869 cmd->retry_for_fw_reset = 0;
2870
05e9ebbe
SP		 2871 if (cmd->scmd)
2872 cmd->scmd->SCp.ptr = NULL;
c4a3e0a5
BS		 2873
2874 switch (hdr->cmd) {
e5f93a36
AR		 2875 case MFI_CMD_INVALID:
2876 /* Some older 1068 controller FW may keep a pended
2877 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
2878 when booting the kdump kernel. Ignore this command to
2879 prevent a kernel panic on shutdown of the kdump kernel. */
2880 printk(KERN_WARNING "megaraid_sas: MFI_CMD_INVALID command "
2881 "completed.\n");
2882 printk(KERN_WARNING "megaraid_sas: If you have a controller "
2883 "other than PERC5, please upgrade your firmware.\n");
2884 break;
c4a3e0a5
BS		 2885 case MFI_CMD_PD_SCSI_IO:
2886 case MFI_CMD_LD_SCSI_IO:
2887
2888 /*
2889 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
2890 * issued either through an IO path or an IOCTL path. If it
2891 * was via IOCTL, we will send it to internal completion.
2892 */
2893 if (cmd->sync_cmd) {
2894 cmd->sync_cmd = 0;
2895 megasas_complete_int_cmd(instance, cmd);
2896 break;
2897 }
2898
c4a3e0a5
BS		 2899 case MFI_CMD_LD_READ:
2900 case MFI_CMD_LD_WRITE:
2901
2902 if (alt_status) {
2903 cmd->scmd->result = alt_status << 16;
2904 exception = 1;
2905 }
2906
2907 if (exception) {
2908
e4a082c7 2909 atomic_dec(&instance->fw_outstanding);
c4a3e0a5 2910
155d98f0 2911 scsi_dma_unmap(cmd->scmd);
c4a3e0a5
BS		 2912 cmd->scmd->scsi_done(cmd->scmd);
2913 megasas_return_cmd(instance, cmd);
2914
2915 break;
2916 }
2917
2918 switch (hdr->cmd_status) {
2919
2920 case MFI_STAT_OK:
2921 cmd->scmd->result = DID_OK << 16;
2922 break;
2923
2924 case MFI_STAT_SCSI_IO_FAILED:
2925 case MFI_STAT_LD_INIT_IN_PROGRESS:
2926 cmd->scmd->result =
2927 (DID_ERROR << 16) | hdr->scsi_status;
2928 break;
2929
2930 case MFI_STAT_SCSI_DONE_WITH_ERROR:
2931
2932 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
2933
2934 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
2935 memset(cmd->scmd->sense_buffer, 0,
2936 SCSI_SENSE_BUFFERSIZE);
2937 memcpy(cmd->scmd->sense_buffer, cmd->sense,
2938 hdr->sense_len);
2939
2940 cmd->scmd->result |= DRIVER_SENSE << 24;
2941 }
2942
2943 break;
2944
2945 case MFI_STAT_LD_OFFLINE:
2946 case MFI_STAT_DEVICE_NOT_FOUND:
2947 cmd->scmd->result = DID_BAD_TARGET << 16;
2948 break;
2949
2950 default:
2951 printk(KERN_DEBUG "megasas: MFI FW status %#x\n",
2952 hdr->cmd_status);
2953 cmd->scmd->result = DID_ERROR << 16;
2954 break;
2955 }
2956
e4a082c7 2957 atomic_dec(&instance->fw_outstanding);
c4a3e0a5 2958
155d98f0 2959 scsi_dma_unmap(cmd->scmd);
c4a3e0a5
BS		 2960 cmd->scmd->scsi_done(cmd->scmd);
2961 megasas_return_cmd(instance, cmd);
2962
2963 break;
2964
2965 case MFI_CMD_SMP:
2966 case MFI_CMD_STP:
2967 case MFI_CMD_DCMD:
94cd65dd 2968 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
9c915a8c 2969 /* Check for LD map update */
94cd65dd
SS		 2970 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
2971 && (cmd->frame->dcmd.mbox.b[1] == 1)) {
bc93d425 2972 fusion->fast_path_io = 0;
9c915a8c
AR		 2973 spin_lock_irqsave(instance->host->host_lock, flags);
2974 if (cmd->frame->hdr.cmd_status != 0) {
2975 if (cmd->frame->hdr.cmd_status !=
2976 MFI_STAT_NOT_FOUND)
2977 printk(KERN_WARNING "megasas: map sync"
2978 "failed, status = 0x%x.\n",
2979 cmd->frame->hdr.cmd_status);
2980 else {
90dc9d98
SS		 2981 megasas_return_mfi_mpt_pthr(instance,
2982 cmd, cmd->mpt_pthr_cmd_blocked);
9c915a8c
AR		 2983 spin_unlock_irqrestore(
2984 instance->host->host_lock,
2985 flags);
2986 break;
2987 }
2988 } else
2989 instance->map_id++;
90dc9d98
SS		 2990 megasas_return_mfi_mpt_pthr(instance, cmd,
2991 cmd->mpt_pthr_cmd_blocked);
bc93d425
SS		 2992
2993 /*
2994 * Set fast path IO to ZERO.
2995 * Validate Map will set proper value.
2996 * Meanwhile all IOs will go as LD IO.
2997 */
2998 if (MR_ValidateMapInfo(instance))
9c915a8c
AR		 2999 fusion->fast_path_io = 1;
3000 else
3001 fusion->fast_path_io = 0;
3002 megasas_sync_map_info(instance);
3003 spin_unlock_irqrestore(instance->host->host_lock,
3004 flags);
3005 break;
3006 }
94cd65dd
SS		 3007 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
3008 opcode == MR_DCMD_CTRL_EVENT_GET) {
c3518837
YB		 3009 spin_lock_irqsave(&poll_aen_lock, flags);
3010 megasas_poll_wait_aen = 0;
3011 spin_unlock_irqrestore(&poll_aen_lock, flags);
3012 }
c4a3e0a5
BS		 3013
3014 /*
3015 * See if got an event notification
3016 */
94cd65dd 3017 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
c4a3e0a5
BS		 3018 megasas_service_aen(instance, cmd);
3019 else
3020 megasas_complete_int_cmd(instance, cmd);
3021
3022 break;
3023
3024 case MFI_CMD_ABORT:
3025 /*
3026 * Cmd issued to abort another cmd returned
3027 */
3028 megasas_complete_abort(instance, cmd);
3029 break;
3030
3031 default:
3032 printk("megasas: Unknown command completed! [0x%X]\n",
3033 hdr->cmd);
3034 break;
3035 }
3036}
3037
39a98554 3038/**
3039 * megasas_issue_pending_cmds_again - issue all pending cmds
3040 * in FW again because of the fw reset
3041 * @instance: Adapter soft state
3042 */
3043static inline void
3044megasas_issue_pending_cmds_again(struct megasas_instance *instance)
3045{
3046 struct megasas_cmd *cmd;
3047 struct list_head clist_local;
3048 union megasas_evt_class_locale class_locale;
3049 unsigned long flags;
3050 u32 seq_num;
3051
3052 INIT_LIST_HEAD(&clist_local);
3053 spin_lock_irqsave(&instance->hba_lock, flags);
3054 list_splice_init(&instance->internal_reset_pending_q, &clist_local);
3055 spin_unlock_irqrestore(&instance->hba_lock, flags);
3056
3057 while (!list_empty(&clist_local)) {
3058 cmd = list_entry((&clist_local)->next,
3059 struct megasas_cmd, list);
3060 list_del_init(&cmd->list);
3061
3062 if (cmd->sync_cmd || cmd->scmd) {
3063 printk(KERN_NOTICE "megaraid_sas: command %p, %p:%d"
3064 "detected to be pending while HBA reset.\n",
3065 cmd, cmd->scmd, cmd->sync_cmd);
3066
3067 cmd->retry_for_fw_reset++;
3068
3069 if (cmd->retry_for_fw_reset == 3) {
3070 printk(KERN_NOTICE "megaraid_sas: cmd %p, %p:%d"
3071 "was tried multiple times during reset."
3072 "Shutting down the HBA\n",
3073 cmd, cmd->scmd, cmd->sync_cmd);
c8dd61ef
SS		 3074 instance->instancet->disable_intr(instance);
3075 atomic_set(&instance->fw_reset_no_pci_access, 1);
39a98554 3076 megaraid_sas_kill_hba(instance);
39a98554 3077 return;
3078 }
3079 }
3080
3081 if (cmd->sync_cmd == 1) {
3082 if (cmd->scmd) {
3083 printk(KERN_NOTICE "megaraid_sas: unexpected"
3084 "cmd attached to internal command!\n");
3085 }
3086 printk(KERN_NOTICE "megasas: %p synchronous cmd"
3087 "on the internal reset queue,"
3088 "issue it again.\n", cmd);
3089 cmd->cmd_status = ENODATA;
3090 instance->instancet->fire_cmd(instance,
3091 cmd->frame_phys_addr ,
3092 0, instance->reg_set);
3093 } else if (cmd->scmd) {
5cd049a5 3094 printk(KERN_NOTICE "megasas: %p scsi cmd [%02x]"
39a98554 3095 "detected on the internal queue, issue again.\n",
5cd049a5 3096 cmd, cmd->scmd->cmnd[0]);
39a98554 3097
3098 atomic_inc(&instance->fw_outstanding);
3099 instance->instancet->fire_cmd(instance,
3100 cmd->frame_phys_addr,
3101 cmd->frame_count-1, instance->reg_set);
3102 } else {
3103 printk(KERN_NOTICE "megasas: %p unexpected cmd on the"
3104 "internal reset defer list while re-issue!!\n",
3105 cmd);
3106 }
3107 }
3108
3109 if (instance->aen_cmd) {
3110 printk(KERN_NOTICE "megaraid_sas: aen_cmd in def process\n");
3111 megasas_return_cmd(instance, instance->aen_cmd);
3112
3113 instance->aen_cmd = NULL;
3114 }
3115
3116 /*
3117 * Initiate AEN (Asynchronous Event Notification)
3118 */
3119 seq_num = instance->last_seq_num;
3120 class_locale.members.reserved = 0;
3121 class_locale.members.locale = MR_EVT_LOCALE_ALL;
3122 class_locale.members.class = MR_EVT_CLASS_DEBUG;
3123
3124 megasas_register_aen(instance, seq_num, class_locale.word);
3125}
3126
3127/**
3128 * Move the internal reset pending commands to a deferred queue.
3129 *
3130 * We move the commands pending at internal reset time to a
3131 * pending queue. This queue would be flushed after successful
3132 * completion of the internal reset sequence. if the internal reset
3133 * did not complete in time, the kernel reset handler would flush
3134 * these commands.
3135 **/
3136static void
3137megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
3138{
3139 struct megasas_cmd *cmd;
3140 int i;
3141 u32 max_cmd = instance->max_fw_cmds;
3142 u32 defer_index;
3143 unsigned long flags;
3144
3145 defer_index = 0;
90dc9d98 3146 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
39a98554 3147 for (i = 0; i < max_cmd; i++) {
3148 cmd = instance->cmd_list[i];
3149 if (cmd->sync_cmd == 1 || cmd->scmd) {
3150 printk(KERN_NOTICE "megasas: moving cmd[%d]:%p:%d:%p"
3151 "on the defer queue as internal\n",
3152 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
3153
3154 if (!list_empty(&cmd->list)) {
3155 printk(KERN_NOTICE "megaraid_sas: ERROR while"
3156 " moving this cmd:%p, %d %p, it was"
3157 "discovered on some list?\n",
3158 cmd, cmd->sync_cmd, cmd->scmd);
3159
3160 list_del_init(&cmd->list);
3161 }
3162 defer_index++;
3163 list_add_tail(&cmd->list,
3164 &instance->internal_reset_pending_q);
3165 }
3166 }
90dc9d98 3167 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
39a98554 3168}
3169
3170
3171static void
3172process_fw_state_change_wq(struct work_struct *work)
3173{
3174 struct megasas_instance *instance =
3175 container_of(work, struct megasas_instance, work_init);
3176 u32 wait;
3177 unsigned long flags;
3178
3179 if (instance->adprecovery != MEGASAS_ADPRESET_SM_INFAULT) {
3180 printk(KERN_NOTICE "megaraid_sas: error, recovery st %x \n",
3181 instance->adprecovery);
3182 return ;
3183 }
3184
3185 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) {
3186 printk(KERN_NOTICE "megaraid_sas: FW detected to be in fault"
3187 "state, restarting it...\n");
3188
d46a3ad6 3189 instance->instancet->disable_intr(instance);
39a98554 3190 atomic_set(&instance->fw_outstanding, 0);
3191
3192 atomic_set(&instance->fw_reset_no_pci_access, 1);
3193 instance->instancet->adp_reset(instance, instance->reg_set);
3194 atomic_set(&instance->fw_reset_no_pci_access, 0 );
3195
3196 printk(KERN_NOTICE "megaraid_sas: FW restarted successfully,"
3197 "initiating next stage...\n");
3198
3199 printk(KERN_NOTICE "megaraid_sas: HBA recovery state machine,"
3200 "state 2 starting...\n");
3201
3202 /*waitting for about 20 second before start the second init*/
3203 for (wait = 0; wait < 30; wait++) {
3204 msleep(1000);
3205 }
3206
058a8fac 3207 if (megasas_transition_to_ready(instance, 1)) {
39a98554 3208 printk(KERN_NOTICE "megaraid_sas:adapter not ready\n");
3209
c8dd61ef 3210 atomic_set(&instance->fw_reset_no_pci_access, 1);
39a98554 3211 megaraid_sas_kill_hba(instance);
39a98554 3212 return ;
3213 }
3214
3215 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
3216 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
3217 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
3218 ) {
3219 *instance->consumer = *instance->producer;
3220 } else {
3221 *instance->consumer = 0;
3222 *instance->producer = 0;
3223 }
3224
3225 megasas_issue_init_mfi(instance);
3226
3227 spin_lock_irqsave(&instance->hba_lock, flags);
3228 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
3229 spin_unlock_irqrestore(&instance->hba_lock, flags);
d46a3ad6 3230 instance->instancet->enable_intr(instance);
39a98554 3231
3232 megasas_issue_pending_cmds_again(instance);
3233 instance->issuepend_done = 1;
3234 }
3235 return ;
3236}
3237
c4a3e0a5
BS		 3238/**
3239 * megasas_deplete_reply_queue - Processes all completed commands
3240 * @instance: Adapter soft state
3241 * @alt_status: Alternate status to be returned to
3242 * SCSI mid-layer instead of the status
3243 * returned by the FW
39a98554 3244 * Note: this must be called with hba lock held
c4a3e0a5 3245 */
858119e1 3246static int
39a98554 3247megasas_deplete_reply_queue(struct megasas_instance *instance,
3248 u8 alt_status)
c4a3e0a5 3249{
39a98554 3250 u32 mfiStatus;
3251 u32 fw_state;
3252
3253 if ((mfiStatus = instance->instancet->check_reset(instance,
3254 instance->reg_set)) == 1) {
3255 return IRQ_HANDLED;
3256 }
3257
3258 if ((mfiStatus = instance->instancet->clear_intr(
3259 instance->reg_set)
3260 ) == 0) {
e1419191 3261 /* Hardware may not set outbound_intr_status in MSI-X mode */
c8e858fe 3262 if (!instance->msix_vectors)
e1419191 3263 return IRQ_NONE;
39a98554 3264 }
3265
3266 instance->mfiStatus = mfiStatus;
3267
3268 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
3269 fw_state = instance->instancet->read_fw_status_reg(
3270 instance->reg_set) & MFI_STATE_MASK;
3271
3272 if (fw_state != MFI_STATE_FAULT) {
3273 printk(KERN_NOTICE "megaraid_sas: fw state:%x\n",
3274 fw_state);
3275 }
3276
3277 if ((fw_state == MFI_STATE_FAULT) &&
3278 (instance->disableOnlineCtrlReset == 0)) {
3279 printk(KERN_NOTICE "megaraid_sas: wait adp restart\n");
3280
3281 if ((instance->pdev->device ==
3282 PCI_DEVICE_ID_LSI_SAS1064R) ||
3283 (instance->pdev->device ==
3284 PCI_DEVICE_ID_DELL_PERC5) ||
3285 (instance->pdev->device ==
3286 PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
3287
3288 *instance->consumer =
94cd65dd 3289 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
39a98554 3290 }
3291
3292
d46a3ad6 3293 instance->instancet->disable_intr(instance);
39a98554 3294 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
3295 instance->issuepend_done = 0;
3296
3297 atomic_set(&instance->fw_outstanding, 0);
3298 megasas_internal_reset_defer_cmds(instance);
3299
3300 printk(KERN_NOTICE "megasas: fwState=%x, stage:%d\n",
3301 fw_state, instance->adprecovery);
3302
3303 schedule_work(&instance->work_init);
3304 return IRQ_HANDLED;
3305
3306 } else {
3307 printk(KERN_NOTICE "megasas: fwstate:%x, dis_OCR=%x\n",
3308 fw_state, instance->disableOnlineCtrlReset);
3309 }
3310 }
c4a3e0a5 3311
5d018ad0 3312 tasklet_schedule(&instance->isr_tasklet);
c4a3e0a5
BS		 3313 return IRQ_HANDLED;
3314}
c4a3e0a5
BS		 3315/**
3316 * megasas_isr - isr entry point
3317 */
7d12e780 3318static irqreturn_t megasas_isr(int irq, void *devp)
c4a3e0a5 3319{
c8e858fe
AR		 3320 struct megasas_irq_context *irq_context = devp;
3321 struct megasas_instance *instance = irq_context->instance;
39a98554 3322 unsigned long flags;
3323 irqreturn_t rc;
3324
c8e858fe 3325 if (atomic_read(&instance->fw_reset_no_pci_access))
39a98554 3326 return IRQ_HANDLED;
3327
39a98554 3328 spin_lock_irqsave(&instance->hba_lock, flags);
3329 rc = megasas_deplete_reply_queue(instance, DID_OK);
3330 spin_unlock_irqrestore(&instance->hba_lock, flags);
3331
3332 return rc;
c4a3e0a5
BS		 3333}
3334
3335/**
3336 * megasas_transition_to_ready - Move the FW to READY state
1341c939 3337 * @instance: Adapter soft state
c4a3e0a5
BS		 3338 *
3339 * During the initialization, FW passes can potentially be in any one of
3340 * several possible states. If the FW in operational, waiting-for-handshake
3341 * states, driver must take steps to bring it to ready state. Otherwise, it
3342 * has to wait for the ready state.
3343 */
9c915a8c 3344int
058a8fac 3345megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
c4a3e0a5
BS		 3346{
3347 int i;
3348 u8 max_wait;
3349 u32 fw_state;
3350 u32 cur_state;
7218df69 3351 u32 abs_state, curr_abs_state;
c4a3e0a5 3352
bc6ac5e8
TH		 3353 abs_state = instance->instancet->read_fw_status_reg(instance->reg_set);
3354 fw_state = abs_state & MFI_STATE_MASK;
c4a3e0a5 3355
e3bbff9f 3356 if (fw_state != MFI_STATE_READY)
0d49016b
AR		 3357 printk(KERN_INFO "megasas: Waiting for FW to come to ready"
3358 " state\n");
e3bbff9f 3359
c4a3e0a5
BS		 3360 while (fw_state != MFI_STATE_READY) {
3361
c4a3e0a5
BS		 3362 switch (fw_state) {
3363
3364 case MFI_STATE_FAULT:
c4a3e0a5 3365 printk(KERN_DEBUG "megasas: FW in FAULT state!!\n");
058a8fac
AR		 3366 if (ocr) {
3367 max_wait = MEGASAS_RESET_WAIT_TIME;
3368 cur_state = MFI_STATE_FAULT;
3369 break;
3370 } else
3371 return -ENODEV;
c4a3e0a5
BS		 3372
3373 case MFI_STATE_WAIT_HANDSHAKE:
3374 /*
3375 * Set the CLR bit in inbound doorbell
3376 */
0c79e681 3377 if ((instance->pdev->device ==
87911122
YB		 3378 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3379 (instance->pdev->device ==
9c915a8c
AR		 3380 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3381 (instance->pdev->device ==
21d3c710 3382 PCI_DEVICE_ID_LSI_FUSION) ||
36807e67 3383 (instance->pdev->device ==
229fe47c
AR		 3384 PCI_DEVICE_ID_LSI_PLASMA) ||
3385 (instance->pdev->device ==
21d3c710
SS		 3386 PCI_DEVICE_ID_LSI_INVADER) ||
3387 (instance->pdev->device ==
3388 PCI_DEVICE_ID_LSI_FURY)) {
87911122
YB		 3389 writel(
3390 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
9c915a8c 3391 &instance->reg_set->doorbell);
87911122
YB		 3392 } else {
3393 writel(
3394 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
3395 &instance->reg_set->inbound_doorbell);
3396 }
c4a3e0a5 3397
7218df69 3398 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 3399 cur_state = MFI_STATE_WAIT_HANDSHAKE;
3400 break;
3401
e3bbff9f 3402 case MFI_STATE_BOOT_MESSAGE_PENDING:
87911122 3403 if ((instance->pdev->device ==
9c915a8c
AR		 3404 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3405 (instance->pdev->device ==
3406 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3407 (instance->pdev->device ==
36807e67 3408 PCI_DEVICE_ID_LSI_FUSION) ||
229fe47c
AR		 3409 (instance->pdev->device ==
3410 PCI_DEVICE_ID_LSI_PLASMA) ||
36807e67 3411 (instance->pdev->device ==
21d3c710
SS		 3412 PCI_DEVICE_ID_LSI_INVADER) ||
3413 (instance->pdev->device ==
3414 PCI_DEVICE_ID_LSI_FURY)) {
87911122 3415 writel(MFI_INIT_HOTPLUG,
9c915a8c 3416 &instance->reg_set->doorbell);
87911122
YB		 3417 } else
3418 writel(MFI_INIT_HOTPLUG,
3419 &instance->reg_set->inbound_doorbell);
e3bbff9f 3420
7218df69 3421 max_wait = MEGASAS_RESET_WAIT_TIME;
e3bbff9f
SP		 3422 cur_state = MFI_STATE_BOOT_MESSAGE_PENDING;
3423 break;
3424
c4a3e0a5
BS		 3425 case MFI_STATE_OPERATIONAL:
3426 /*
e3bbff9f 3427 * Bring it to READY state; assuming max wait 10 secs
c4a3e0a5 3428 */
d46a3ad6 3429 instance->instancet->disable_intr(instance);
87911122
YB		 3430 if ((instance->pdev->device ==
3431 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3432 (instance->pdev->device ==
9c915a8c
AR		 3433 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3434 (instance->pdev->device
36807e67 3435 == PCI_DEVICE_ID_LSI_FUSION) ||
229fe47c
AR		 3436 (instance->pdev->device
3437 == PCI_DEVICE_ID_LSI_PLASMA) ||
36807e67 3438 (instance->pdev->device
21d3c710
SS		 3439 == PCI_DEVICE_ID_LSI_INVADER) ||
3440 (instance->pdev->device
3441 == PCI_DEVICE_ID_LSI_FURY)) {
87911122 3442 writel(MFI_RESET_FLAGS,
9c915a8c 3443 &instance->reg_set->doorbell);
36807e67 3444 if ((instance->pdev->device ==
21d3c710
SS		 3445 PCI_DEVICE_ID_LSI_FUSION) ||
3446 (instance->pdev->device ==
229fe47c
AR		 3447 PCI_DEVICE_ID_LSI_PLASMA) ||
3448 (instance->pdev->device ==
21d3c710
SS		 3449 PCI_DEVICE_ID_LSI_INVADER) ||
3450 (instance->pdev->device ==
3451 PCI_DEVICE_ID_LSI_FURY)) {
9c915a8c
AR		 3452 for (i = 0; i < (10 * 1000); i += 20) {
3453 if (readl(
3454 &instance->
3455 reg_set->
3456 doorbell) & 1)
3457 msleep(20);
3458 else
3459 break;
3460 }
3461 }
87911122
YB		 3462 } else
3463 writel(MFI_RESET_FLAGS,
3464 &instance->reg_set->inbound_doorbell);
c4a3e0a5 3465
7218df69 3466 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 3467 cur_state = MFI_STATE_OPERATIONAL;
3468 break;
3469
3470 case MFI_STATE_UNDEFINED:
3471 /*
3472 * This state should not last for more than 2 seconds
3473 */
7218df69 3474 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 3475 cur_state = MFI_STATE_UNDEFINED;
3476 break;
3477
3478 case MFI_STATE_BB_INIT:
7218df69 3479 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 3480 cur_state = MFI_STATE_BB_INIT;
3481 break;
3482
3483 case MFI_STATE_FW_INIT:
7218df69 3484 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 3485 cur_state = MFI_STATE_FW_INIT;
3486 break;
3487
3488 case MFI_STATE_FW_INIT_2:
7218df69 3489 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 3490 cur_state = MFI_STATE_FW_INIT_2;
3491 break;
3492
3493 case MFI_STATE_DEVICE_SCAN:
7218df69 3494 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 3495 cur_state = MFI_STATE_DEVICE_SCAN;
3496 break;
3497
3498 case MFI_STATE_FLUSH_CACHE:
7218df69 3499 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 3500 cur_state = MFI_STATE_FLUSH_CACHE;
3501 break;
3502
3503 default:
3504 printk(KERN_DEBUG "megasas: Unknown state 0x%x\n",
3505 fw_state);
3506 return -ENODEV;
3507 }
3508
3509 /*
3510 * The cur_state should not last for more than max_wait secs
3511 */
3512 for (i = 0; i < (max_wait * 1000); i++) {
bc6ac5e8
TH		 3513 curr_abs_state = instance->instancet->
3514 read_fw_status_reg(instance->reg_set);
c4a3e0a5 3515
7218df69 3516 if (abs_state == curr_abs_state) {
c4a3e0a5
BS		 3517 msleep(1);
3518 } else
3519 break;
3520 }
3521
3522 /*
3523 * Return error if fw_state hasn't changed after max_wait
3524 */
7218df69 3525 if (curr_abs_state == abs_state) {
c4a3e0a5
BS		 3526 printk(KERN_DEBUG "FW state [%d] hasn't changed "
3527 "in %d secs\n", fw_state, max_wait);
3528 return -ENODEV;
3529 }
bc6ac5e8
TH		 3530
3531 abs_state = curr_abs_state;
3532 fw_state = curr_abs_state & MFI_STATE_MASK;
39a98554 3533 }
0d49016b 3534 printk(KERN_INFO "megasas: FW now in Ready state\n");
c4a3e0a5
BS		 3535
3536 return 0;
3537}
3538
3539/**
3540 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
3541 * @instance: Adapter soft state
3542 */
3543static void megasas_teardown_frame_pool(struct megasas_instance *instance)
3544{
3545 int i;
9c915a8c 3546 u32 max_cmd = instance->max_mfi_cmds;
c4a3e0a5
BS		 3547 struct megasas_cmd *cmd;
3548
3549 if (!instance->frame_dma_pool)
3550 return;
3551
3552 /*
3553 * Return all frames to pool
3554 */
3555 for (i = 0; i < max_cmd; i++) {
3556
3557 cmd = instance->cmd_list[i];
3558
3559 if (cmd->frame)
3560 pci_pool_free(instance->frame_dma_pool, cmd->frame,
3561 cmd->frame_phys_addr);
3562
3563 if (cmd->sense)
e3bbff9f 3564 pci_pool_free(instance->sense_dma_pool, cmd->sense,
c4a3e0a5
BS		 3565 cmd->sense_phys_addr);
3566 }
3567
3568 /*
3569 * Now destroy the pool itself
3570 */
3571 pci_pool_destroy(instance->frame_dma_pool);
3572 pci_pool_destroy(instance->sense_dma_pool);
3573
3574 instance->frame_dma_pool = NULL;
3575 instance->sense_dma_pool = NULL;
3576}
3577
3578/**
3579 * megasas_create_frame_pool - Creates DMA pool for cmd frames
3580 * @instance: Adapter soft state
3581 *
3582 * Each command packet has an embedded DMA memory buffer that is used for
3583 * filling MFI frame and the SG list that immediately follows the frame. This
3584 * function creates those DMA memory buffers for each command packet by using
3585 * PCI pool facility.
3586 */
3587static int megasas_create_frame_pool(struct megasas_instance *instance)
3588{
3589 int i;
3590 u32 max_cmd;
3591 u32 sge_sz;
c4a3e0a5
BS		 3592 u32 total_sz;
3593 u32 frame_count;
3594 struct megasas_cmd *cmd;
3595
9c915a8c 3596 max_cmd = instance->max_mfi_cmds;
c4a3e0a5
BS		 3597
3598 /*
3599 * Size of our frame is 64 bytes for MFI frame, followed by max SG
3600 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer
3601 */
3602 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
3603 sizeof(struct megasas_sge32);
3604
f4c9a131
YB		 3605 if (instance->flag_ieee) {
3606 sge_sz = sizeof(struct megasas_sge_skinny);
3607 }
3608
c4a3e0a5 3609 /*
200aed58
SS		 3610 * For MFI controllers.
3611 * max_num_sge = 60
3612 * max_sge_sz = 16 byte (sizeof megasas_sge_skinny)
3613 * Total 960 byte (15 MFI frame of 64 byte)
3614 *
3615 * Fusion adapter require only 3 extra frame.
3616 * max_num_sge = 16 (defined as MAX_IOCTL_SGE)
3617 * max_sge_sz = 12 byte (sizeof megasas_sge64)
3618 * Total 192 byte (3 MFI frame of 64 byte)
c4a3e0a5 3619 */
200aed58 3620 frame_count = instance->ctrl_context ? (3 + 1) : (15 + 1);
c4a3e0a5
BS		 3621 total_sz = MEGAMFI_FRAME_SIZE * frame_count;
3622 /*
3623 * Use DMA pool facility provided by PCI layer
3624 */
3625 instance->frame_dma_pool = pci_pool_create("megasas frame pool",
200aed58 3626 instance->pdev, total_sz, 256, 0);
c4a3e0a5
BS		 3627
3628 if (!instance->frame_dma_pool) {
3629 printk(KERN_DEBUG "megasas: failed to setup frame pool\n");
3630 return -ENOMEM;
3631 }
3632
3633 instance->sense_dma_pool = pci_pool_create("megasas sense pool",
3634 instance->pdev, 128, 4, 0);
3635
3636 if (!instance->sense_dma_pool) {
3637 printk(KERN_DEBUG "megasas: failed to setup sense pool\n");
3638
3639 pci_pool_destroy(instance->frame_dma_pool);
3640 instance->frame_dma_pool = NULL;
3641
3642 return -ENOMEM;
3643 }
3644
3645 /*
3646 * Allocate and attach a frame to each of the commands in cmd_list.
3647 * By making cmd->index as the context instead of the &cmd, we can
3648 * always use 32bit context regardless of the architecture
3649 */
3650 for (i = 0; i < max_cmd; i++) {
3651
3652 cmd = instance->cmd_list[i];
3653
3654 cmd->frame = pci_pool_alloc(instance->frame_dma_pool,
3655 GFP_KERNEL, &cmd->frame_phys_addr);
3656
3657 cmd->sense = pci_pool_alloc(instance->sense_dma_pool,
3658 GFP_KERNEL, &cmd->sense_phys_addr);
3659
3660 /*
3661 * megasas_teardown_frame_pool() takes care of freeing
3662 * whatever has been allocated
3663 */
3664 if (!cmd->frame || !cmd->sense) {
3665 printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n");
3666 megasas_teardown_frame_pool(instance);
3667 return -ENOMEM;
3668 }
3669
707e09bd 3670 memset(cmd->frame, 0, total_sz);
94cd65dd 3671 cmd->frame->io.context = cpu_to_le32(cmd->index);
7e8a75f4 3672 cmd->frame->io.pad_0 = 0;
e5f93a36 3673 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) &&
229fe47c 3674 (instance->pdev->device != PCI_DEVICE_ID_LSI_PLASMA) &&
e5f93a36 3675 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) &&
21d3c710 3676 (instance->pdev->device != PCI_DEVICE_ID_LSI_FURY) &&
e5f93a36
AR		 3677 (reset_devices))
3678 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
c4a3e0a5
BS		 3679 }
3680
3681 return 0;
3682}
3683
3684/**
3685 * megasas_free_cmds - Free all the cmds in the free cmd pool
3686 * @instance: Adapter soft state
3687 */
9c915a8c 3688void megasas_free_cmds(struct megasas_instance *instance)
c4a3e0a5
BS		 3689{
3690 int i;
3691 /* First free the MFI frame pool */
3692 megasas_teardown_frame_pool(instance);
3693
3694 /* Free all the commands in the cmd_list */
9c915a8c
AR		 3695 for (i = 0; i < instance->max_mfi_cmds; i++)
3696
c4a3e0a5
BS		 3697 kfree(instance->cmd_list[i]);
3698
3699 /* Free the cmd_list buffer itself */
3700 kfree(instance->cmd_list);
3701 instance->cmd_list = NULL;
3702
3703 INIT_LIST_HEAD(&instance->cmd_pool);
3704}
3705
3706/**
3707 * megasas_alloc_cmds - Allocates the command packets
3708 * @instance: Adapter soft state
3709 *
3710 * Each command that is issued to the FW, whether IO commands from the OS or
3711 * internal commands like IOCTLs, are wrapped in local data structure called
3712 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
3713 * the FW.
3714 *
3715 * Each frame has a 32-bit field called context (tag). This context is used
3716 * to get back the megasas_cmd from the frame when a frame gets completed in
3717 * the ISR. Typically the address of the megasas_cmd itself would be used as
3718 * the context. But we wanted to keep the differences between 32 and 64 bit
3719 * systems to the mininum. We always use 32 bit integers for the context. In
3720 * this driver, the 32 bit values are the indices into an array cmd_list.
3721 * This array is used only to look up the megasas_cmd given the context. The
3722 * free commands themselves are maintained in a linked list called cmd_pool.
3723 */
9c915a8c 3724int megasas_alloc_cmds(struct megasas_instance *instance)
c4a3e0a5
BS		 3725{
3726 int i;
3727 int j;
3728 u32 max_cmd;
3729 struct megasas_cmd *cmd;
90dc9d98 3730 struct fusion_context *fusion;
c4a3e0a5 3731
90dc9d98 3732 fusion = instance->ctrl_context;
9c915a8c 3733 max_cmd = instance->max_mfi_cmds;
c4a3e0a5
BS		 3734
3735 /*
3736 * instance->cmd_list is an array of struct megasas_cmd pointers.
3737 * Allocate the dynamic array first and then allocate individual
3738 * commands.
3739 */
dd00cc48 3740 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
c4a3e0a5
BS		 3741
3742 if (!instance->cmd_list) {
3743 printk(KERN_DEBUG "megasas: out of memory\n");
3744 return -ENOMEM;
3745 }
3746
9c915a8c 3747 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
c4a3e0a5
BS		 3748
3749 for (i = 0; i < max_cmd; i++) {
3750 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
3751 GFP_KERNEL);
3752
3753 if (!instance->cmd_list[i]) {
3754
3755 for (j = 0; j < i; j++)
3756 kfree(instance->cmd_list[j]);
3757
3758 kfree(instance->cmd_list);
3759 instance->cmd_list = NULL;
3760
3761 return -ENOMEM;
3762 }
3763 }
3764
c4a3e0a5
BS		 3765 for (i = 0; i < max_cmd; i++) {
3766 cmd = instance->cmd_list[i];
3767 memset(cmd, 0, sizeof(struct megasas_cmd));
3768 cmd->index = i;
90dc9d98 3769 atomic_set(&cmd->mfi_mpt_pthr, MFI_LIST_ADDED);
39a98554 3770 cmd->scmd = NULL;
c4a3e0a5
BS		 3771 cmd->instance = instance;
3772
3773 list_add_tail(&cmd->list, &instance->cmd_pool);
3774 }
3775
3776 /*
3777 * Create a frame pool and assign one frame to each cmd
3778 */
3779 if (megasas_create_frame_pool(instance)) {
3780 printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n");
3781 megasas_free_cmds(instance);
3782 }
3783
3784 return 0;
3785}
3786
81e403ce
YB		 3787/*
3788 * megasas_get_pd_list_info - Returns FW's pd_list structure
3789 * @instance: Adapter soft state
3790 * @pd_list: pd_list structure
3791 *
3792 * Issues an internal command (DCMD) to get the FW's controller PD
3793 * list structure. This information is mainly used to find out SYSTEM
3794 * supported by the FW.
3795 */
3796static int
3797megasas_get_pd_list(struct megasas_instance *instance)
3798{
3799 int ret = 0, pd_index = 0;
3800 struct megasas_cmd *cmd;
3801 struct megasas_dcmd_frame *dcmd;
3802 struct MR_PD_LIST *ci;
3803 struct MR_PD_ADDRESS *pd_addr;
3804 dma_addr_t ci_h = 0;
3805
3806 cmd = megasas_get_cmd(instance);
3807
3808 if (!cmd) {
3809 printk(KERN_DEBUG "megasas (get_pd_list): Failed to get cmd\n");
3810 return -ENOMEM;
3811 }
3812
3813 dcmd = &cmd->frame->dcmd;
3814
3815 ci = pci_alloc_consistent(instance->pdev,
3816 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h);
3817
3818 if (!ci) {
3819 printk(KERN_DEBUG "Failed to alloc mem for pd_list\n");
3820 megasas_return_cmd(instance, cmd);
3821 return -ENOMEM;
3822 }
3823
3824 memset(ci, 0, sizeof(*ci));
3825 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3826
3827 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
3828 dcmd->mbox.b[1] = 0;
3829 dcmd->cmd = MFI_CMD_DCMD;
3830 dcmd->cmd_status = 0xFF;
3831 dcmd->sge_count = 1;
94cd65dd 3832 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
81e403ce 3833 dcmd->timeout = 0;
780a3762 3834 dcmd->pad_0 = 0;
94cd65dd
SS		 3835 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
3836 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
3837 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
3838 dcmd->sgl.sge32[0].length = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
81e403ce 3839
90dc9d98
SS		 3840 if (instance->ctrl_context && !instance->mask_interrupts)
3841 ret = megasas_issue_blocked_cmd(instance, cmd,
3842 MEGASAS_BLOCKED_CMD_TIMEOUT);
3843 else
3844 ret = megasas_issue_polled(instance, cmd);
81e403ce
YB		 3845
3846 /*
3847 * the following function will get the instance PD LIST.
3848 */
3849
3850 pd_addr = ci->addr;
3851
3852 if ( ret == 0 &&
94cd65dd 3853 (le32_to_cpu(ci->count) <
81e403ce
YB		 3854 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) {
3855
999ece0a 3856 memset(instance->local_pd_list, 0,
81e403ce
YB		 3857 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
3858
94cd65dd 3859 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
81e403ce 3860
999ece0a 3861 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid =
94cd65dd 3862 le16_to_cpu(pd_addr->deviceId);
999ece0a 3863 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType =
81e403ce 3864 pd_addr->scsiDevType;
999ece0a 3865 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState =
81e403ce
YB		 3866 MR_PD_STATE_SYSTEM;
3867 pd_addr++;
3868 }
999ece0a
SS		 3869 memcpy(instance->pd_list, instance->local_pd_list,
3870 sizeof(instance->pd_list));
81e403ce
YB		 3871 }
3872
3873 pci_free_consistent(instance->pdev,
3874 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
3875 ci, ci_h);
90dc9d98
SS		 3876
3877 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
3878 megasas_return_mfi_mpt_pthr(instance, cmd,
3879 cmd->mpt_pthr_cmd_blocked);
3880 else
3881 megasas_return_cmd(instance, cmd);
81e403ce
YB		 3882
3883 return ret;
3884}
3885
bdc6fb8d
YB		 3886/*
3887 * megasas_get_ld_list_info - Returns FW's ld_list structure
3888 * @instance: Adapter soft state
3889 * @ld_list: ld_list structure
3890 *
3891 * Issues an internal command (DCMD) to get the FW's controller PD
3892 * list structure. This information is mainly used to find out SYSTEM
3893 * supported by the FW.
3894 */
3895static int
3896megasas_get_ld_list(struct megasas_instance *instance)
3897{
3898 int ret = 0, ld_index = 0, ids = 0;
3899 struct megasas_cmd *cmd;
3900 struct megasas_dcmd_frame *dcmd;
3901 struct MR_LD_LIST *ci;
3902 dma_addr_t ci_h = 0;
94cd65dd 3903 u32 ld_count;
bdc6fb8d
YB		 3904
3905 cmd = megasas_get_cmd(instance);
3906
3907 if (!cmd) {
3908 printk(KERN_DEBUG "megasas_get_ld_list: Failed to get cmd\n");
3909 return -ENOMEM;
3910 }
3911
3912 dcmd = &cmd->frame->dcmd;
3913
3914 ci = pci_alloc_consistent(instance->pdev,
3915 sizeof(struct MR_LD_LIST),
3916 &ci_h);
3917
3918 if (!ci) {
3919 printk(KERN_DEBUG "Failed to alloc mem in get_ld_list\n");
3920 megasas_return_cmd(instance, cmd);
3921 return -ENOMEM;
3922 }
3923
3924 memset(ci, 0, sizeof(*ci));
3925 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3926
51087a86
SS		 3927 if (instance->supportmax256vd)
3928 dcmd->mbox.b[0] = 1;
bdc6fb8d
YB		 3929 dcmd->cmd = MFI_CMD_DCMD;
3930 dcmd->cmd_status = 0xFF;
3931 dcmd->sge_count = 1;
94cd65dd 3932 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
bdc6fb8d 3933 dcmd->timeout = 0;
94cd65dd
SS		 3934 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
3935 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
3936 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
3937 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_LIST));
bdc6fb8d
YB		 3938 dcmd->pad_0 = 0;
3939
90dc9d98
SS		 3940 if (instance->ctrl_context && !instance->mask_interrupts)
3941 ret = megasas_issue_blocked_cmd(instance, cmd,
3942 MEGASAS_BLOCKED_CMD_TIMEOUT);
3943 else
3944 ret = megasas_issue_polled(instance, cmd);
3945
bdc6fb8d 3946
94cd65dd
SS		 3947 ld_count = le32_to_cpu(ci->ldCount);
3948
bdc6fb8d
YB		 3949 /* the following function will get the instance PD LIST */
3950
51087a86
SS		 3951 if ((ret == 0) && (ld_count <= instance->fw_supported_vd_count)) {
3952 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
bdc6fb8d 3953
94cd65dd 3954 for (ld_index = 0; ld_index < ld_count; ld_index++) {
bdc6fb8d
YB		 3955 if (ci->ldList[ld_index].state != 0) {
3956 ids = ci->ldList[ld_index].ref.targetId;
3957 instance->ld_ids[ids] =
3958 ci->ldList[ld_index].ref.targetId;
3959 }
3960 }
3961 }
3962
3963 pci_free_consistent(instance->pdev,
3964 sizeof(struct MR_LD_LIST),
3965 ci,
3966 ci_h);
3967
90dc9d98
SS		 3968 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
3969 megasas_return_mfi_mpt_pthr(instance, cmd,
3970 cmd->mpt_pthr_cmd_blocked);
3971 else
3972 megasas_return_cmd(instance, cmd);
bdc6fb8d
YB		 3973 return ret;
3974}
3975
21c9e160
AR		 3976/**
3977 * megasas_ld_list_query - Returns FW's ld_list structure
3978 * @instance: Adapter soft state
3979 * @ld_list: ld_list structure
3980 *
3981 * Issues an internal command (DCMD) to get the FW's controller PD
3982 * list structure. This information is mainly used to find out SYSTEM
3983 * supported by the FW.
3984 */
3985static int
3986megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
3987{
3988 int ret = 0, ld_index = 0, ids = 0;
3989 struct megasas_cmd *cmd;
3990 struct megasas_dcmd_frame *dcmd;
3991 struct MR_LD_TARGETID_LIST *ci;
3992 dma_addr_t ci_h = 0;
94cd65dd 3993 u32 tgtid_count;
21c9e160
AR		 3994
3995 cmd = megasas_get_cmd(instance);
3996
3997 if (!cmd) {
3998 printk(KERN_WARNING
3999 "megasas:(megasas_ld_list_query): Failed to get cmd\n");
4000 return -ENOMEM;
4001 }
4002
4003 dcmd = &cmd->frame->dcmd;
4004
4005 ci = pci_alloc_consistent(instance->pdev,
4006 sizeof(struct MR_LD_TARGETID_LIST), &ci_h);
4007
4008 if (!ci) {
4009 printk(KERN_WARNING
4010 "megasas: Failed to alloc mem for ld_list_query\n");
4011 megasas_return_cmd(instance, cmd);
4012 return -ENOMEM;
4013 }
4014
4015 memset(ci, 0, sizeof(*ci));
4016 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4017
4018 dcmd->mbox.b[0] = query_type;
51087a86
SS		 4019 if (instance->supportmax256vd)
4020 dcmd->mbox.b[2] = 1;
21c9e160
AR		 4021
4022 dcmd->cmd = MFI_CMD_DCMD;
4023 dcmd->cmd_status = 0xFF;
4024 dcmd->sge_count = 1;
94cd65dd 4025 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
21c9e160 4026 dcmd->timeout = 0;
94cd65dd
SS		 4027 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4028 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
4029 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
4030 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
21c9e160
AR		 4031 dcmd->pad_0 = 0;
4032
90dc9d98
SS		 4033 if (instance->ctrl_context && !instance->mask_interrupts)
4034 ret = megasas_issue_blocked_cmd(instance, cmd,
4035 MEGASAS_BLOCKED_CMD_TIMEOUT);
4036 else
4037 ret = megasas_issue_polled(instance, cmd);
21c9e160 4038
94cd65dd
SS		 4039 tgtid_count = le32_to_cpu(ci->count);
4040
51087a86 4041 if ((ret == 0) && (tgtid_count <= (instance->fw_supported_vd_count))) {
21c9e160 4042 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
94cd65dd 4043 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
21c9e160
AR		 4044 ids = ci->targetId[ld_index];
4045 instance->ld_ids[ids] = ci->targetId[ld_index];
4046 }
4047
4048 }
4049
4050 pci_free_consistent(instance->pdev, sizeof(struct MR_LD_TARGETID_LIST),
4051 ci, ci_h);
4052
90dc9d98
SS		 4053 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
4054 megasas_return_mfi_mpt_pthr(instance, cmd,
4055 cmd->mpt_pthr_cmd_blocked);
4056 else
4057 megasas_return_cmd(instance, cmd);
21c9e160
AR		 4058
4059 return ret;
4060}
4061
d009b576
SS		 4062/*
4063 * megasas_update_ext_vd_details : Update details w.r.t Extended VD
4064 * instance : Controller's instance
4065*/
4066static void megasas_update_ext_vd_details(struct megasas_instance *instance)
4067{
4068 struct fusion_context *fusion;
4069 u32 old_map_sz;
4070 u32 new_map_sz;
4071
4072 fusion = instance->ctrl_context;
4073 /* For MFI based controllers return dummy success */
4074 if (!fusion)
4075 return;
4076
4077 instance->supportmax256vd =
4078 instance->ctrl_info->adapterOperations3.supportMaxExtLDs;
4079 /* Below is additional check to address future FW enhancement */
4080 if (instance->ctrl_info->max_lds > 64)
4081 instance->supportmax256vd = 1;
4082
4083 instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
4084 * MEGASAS_MAX_DEV_PER_CHANNEL;
4085 instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS
4086 * MEGASAS_MAX_DEV_PER_CHANNEL;
4087 if (instance->supportmax256vd) {
4088 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT;
4089 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
4090 } else {
4091 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
4092 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
4093 }
4094 dev_info(&instance->pdev->dev, "Firmware supports %d VD %d PD\n",
4095 instance->fw_supported_vd_count,
4096 instance->fw_supported_pd_count);
4097 dev_info(&instance->pdev->dev, "Driver supports %d VD %d PD\n",
4098 instance->drv_supported_vd_count,
4099 instance->drv_supported_pd_count);
4100
4101 old_map_sz = sizeof(struct MR_FW_RAID_MAP) +
4102 (sizeof(struct MR_LD_SPAN_MAP) *
4103 (instance->fw_supported_vd_count - 1));
4104 new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT);
4105 fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP) +
4106 (sizeof(struct MR_LD_SPAN_MAP) *
4107 (instance->drv_supported_vd_count - 1));
4108
4109 fusion->max_map_sz = max(old_map_sz, new_map_sz);
4110
4111
4112 if (instance->supportmax256vd)
4113 fusion->current_map_sz = new_map_sz;
4114 else
4115 fusion->current_map_sz = old_map_sz;
4116
4117}
4118
c4a3e0a5
BS		 4119/**
4120 * megasas_get_controller_info - Returns FW's controller structure
4121 * @instance: Adapter soft state
c4a3e0a5
BS		 4122 *
4123 * Issues an internal command (DCMD) to get the FW's controller structure.
4124 * This information is mainly used to find out the maximum IO transfer per
4125 * command supported by the FW.
4126 */
51087a86 4127int
d009b576 4128megasas_get_ctrl_info(struct megasas_instance *instance)
c4a3e0a5
BS		 4129{
4130 int ret = 0;
4131 struct megasas_cmd *cmd;
4132 struct megasas_dcmd_frame *dcmd;
4133 struct megasas_ctrl_info *ci;
d009b576 4134 struct megasas_ctrl_info *ctrl_info;
c4a3e0a5
BS		 4135 dma_addr_t ci_h = 0;
4136
d009b576
SS		 4137 ctrl_info = instance->ctrl_info;
4138
c4a3e0a5
BS		 4139 cmd = megasas_get_cmd(instance);
4140
4141 if (!cmd) {
4142 printk(KERN_DEBUG "megasas: Failed to get a free cmd\n");
4143 return -ENOMEM;
4144 }
4145
4146 dcmd = &cmd->frame->dcmd;
4147
4148 ci = pci_alloc_consistent(instance->pdev,
4149 sizeof(struct megasas_ctrl_info), &ci_h);
4150
4151 if (!ci) {
4152 printk(KERN_DEBUG "Failed to alloc mem for ctrl info\n");
4153 megasas_return_cmd(instance, cmd);
4154 return -ENOMEM;
4155 }
4156
4157 memset(ci, 0, sizeof(*ci));
4158 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4159
4160 dcmd->cmd = MFI_CMD_DCMD;
4161 dcmd->cmd_status = 0xFF;
4162 dcmd->sge_count = 1;
94cd65dd 4163 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
c4a3e0a5 4164 dcmd->timeout = 0;
780a3762 4165 dcmd->pad_0 = 0;
94cd65dd
SS		 4166 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
4167 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
4168 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
4169 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_ctrl_info));
51087a86 4170 dcmd->mbox.b[0] = 1;
c4a3e0a5 4171
90dc9d98
SS		 4172 if (instance->ctrl_context && !instance->mask_interrupts)
4173 ret = megasas_issue_blocked_cmd(instance, cmd,
4174 MEGASAS_BLOCKED_CMD_TIMEOUT);
4175 else
4176 ret = megasas_issue_polled(instance, cmd);
4177
d009b576 4178 if (!ret) {
c4a3e0a5 4179 memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info));
d009b576
SS		 4180 le32_to_cpus((u32 *)&ctrl_info->properties.OnOffProperties);
4181 le32_to_cpus((u32 *)&ctrl_info->adapterOperations2);
4182 le32_to_cpus((u32 *)&ctrl_info->adapterOperations3);
4183 megasas_update_ext_vd_details(instance);
4184 }
c4a3e0a5
BS		 4185
4186 pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info),
4187 ci, ci_h);
4188
90dc9d98
SS		 4189 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
4190 megasas_return_mfi_mpt_pthr(instance, cmd,
4191 cmd->mpt_pthr_cmd_blocked);
4192 else
4193 megasas_return_cmd(instance, cmd);
c4a3e0a5
BS		 4194 return ret;
4195}
4196
fc62b3fc
SS		 4197/*
4198 * megasas_set_crash_dump_params - Sends address of crash dump DMA buffer
4199 * to firmware
4200 *
4201 * @instance: Adapter soft state
4202 * @crash_buf_state - tell FW to turn ON/OFF crash dump feature
4203 MR_CRASH_BUF_TURN_OFF = 0
4204 MR_CRASH_BUF_TURN_ON = 1
4205 * @return 0 on success non-zero on failure.
4206 * Issues an internal command (DCMD) to set parameters for crash dump feature.
4207 * Driver will send address of crash dump DMA buffer and set mbox to tell FW
4208 * that driver supports crash dump feature. This DCMD will be sent only if
4209 * crash dump feature is supported by the FW.
4210 *
4211 */
4212int megasas_set_crash_dump_params(struct megasas_instance *instance,
4213 u8 crash_buf_state)
4214{
4215 int ret = 0;
4216 struct megasas_cmd *cmd;
4217 struct megasas_dcmd_frame *dcmd;
4218
4219 cmd = megasas_get_cmd(instance);
4220
4221 if (!cmd) {
4222 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n");
4223 return -ENOMEM;
4224 }
4225
4226
4227 dcmd = &cmd->frame->dcmd;
4228
4229 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4230 dcmd->mbox.b[0] = crash_buf_state;
4231 dcmd->cmd = MFI_CMD_DCMD;
4232 dcmd->cmd_status = 0xFF;
4233 dcmd->sge_count = 1;
4234 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
4235 dcmd->timeout = 0;
4236 dcmd->pad_0 = 0;
4237 dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
4238 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
4239 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->crash_dump_h);
4240 dcmd->sgl.sge32[0].length = cpu_to_le32(CRASH_DMA_BUF_SIZE);
4241
90dc9d98
SS		 4242 if (instance->ctrl_context && !instance->mask_interrupts)
4243 ret = megasas_issue_blocked_cmd(instance, cmd,
4244 MEGASAS_BLOCKED_CMD_TIMEOUT);
fc62b3fc 4245 else
90dc9d98
SS		 4246 ret = megasas_issue_polled(instance, cmd);
4247
4248 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
4249 megasas_return_mfi_mpt_pthr(instance, cmd,
4250 cmd->mpt_pthr_cmd_blocked);
4251 else
4252 megasas_return_cmd(instance, cmd);
fc62b3fc
SS		 4253 return ret;
4254}
4255
31ea7088 4256/**
4257 * megasas_issue_init_mfi - Initializes the FW
4258 * @instance: Adapter soft state
4259 *
4260 * Issues the INIT MFI cmd
4261 */
4262static int
4263megasas_issue_init_mfi(struct megasas_instance *instance)
4264{
4265 u32 context;
4266
4267 struct megasas_cmd *cmd;
4268
4269 struct megasas_init_frame *init_frame;
4270 struct megasas_init_queue_info *initq_info;
4271 dma_addr_t init_frame_h;
4272 dma_addr_t initq_info_h;
4273
4274 /*
4275 * Prepare a init frame. Note the init frame points to queue info
4276 * structure. Each frame has SGL allocated after first 64 bytes. For
4277 * this frame - since we don't need any SGL - we use SGL's space as
4278 * queue info structure
4279 *
4280 * We will not get a NULL command below. We just created the pool.
4281 */
4282 cmd = megasas_get_cmd(instance);
4283
4284 init_frame = (struct megasas_init_frame *)cmd->frame;
4285 initq_info = (struct megasas_init_queue_info *)
4286 ((unsigned long)init_frame + 64);
4287
4288 init_frame_h = cmd->frame_phys_addr;
4289 initq_info_h = init_frame_h + 64;
4290
4291 context = init_frame->context;
4292 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
4293 memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
4294 init_frame->context = context;
4295
94cd65dd
SS		 4296 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
4297 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
31ea7088 4298
94cd65dd
SS		 4299 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
4300 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
31ea7088 4301
4302 init_frame->cmd = MFI_CMD_INIT;
4303 init_frame->cmd_status = 0xFF;
94cd65dd
SS		 4304 init_frame->queue_info_new_phys_addr_lo =
4305 cpu_to_le32(lower_32_bits(initq_info_h));
4306 init_frame->queue_info_new_phys_addr_hi =
4307 cpu_to_le32(upper_32_bits(initq_info_h));
31ea7088 4308
94cd65dd 4309 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
31ea7088 4310
4311 /*
4312 * disable the intr before firing the init frame to FW
4313 */
d46a3ad6 4314 instance->instancet->disable_intr(instance);
31ea7088 4315
4316 /*
4317 * Issue the init frame in polled mode
4318 */
4319
4320 if (megasas_issue_polled(instance, cmd)) {
4321 printk(KERN_ERR "megasas: Failed to init firmware\n");
4322 megasas_return_cmd(instance, cmd);
4323 goto fail_fw_init;
4324 }
4325
4326 megasas_return_cmd(instance, cmd);
4327
4328 return 0;
4329
4330fail_fw_init:
4331 return -EINVAL;
4332}
4333
cd50ba8e
AR		 4334static u32
4335megasas_init_adapter_mfi(struct megasas_instance *instance)
c4a3e0a5 4336{
cd50ba8e 4337 struct megasas_register_set __iomem *reg_set;
c4a3e0a5
BS		 4338 u32 context_sz;
4339 u32 reply_q_sz;
c4a3e0a5
BS		 4340
4341 reg_set = instance->reg_set;
4342
c4a3e0a5
BS		 4343 /*
4344 * Get various operational parameters from status register
4345 */
1341c939 4346 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
e3bbff9f
SP		 4347 /*
4348 * Reduce the max supported cmds by 1. This is to ensure that the
4349 * reply_q_sz (1 more than the max cmd that driver may send)
4350 * does not exceed max cmds that the FW can support
4351 */
4352 instance->max_fw_cmds = instance->max_fw_cmds-1;
9c915a8c 4353 instance->max_mfi_cmds = instance->max_fw_cmds;
0d49016b 4354 instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >>
1341c939 4355 0x10;
f26ac3a1
SS		 4356 /*
4357 * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands
4358 * are reserved for IOCTL + driver's internal DCMDs.
4359 */
4360 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4361 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
4362 instance->max_scsi_cmds = (instance->max_fw_cmds -
4363 MEGASAS_SKINNY_INT_CMDS);
4364 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
4365 } else {
4366 instance->max_scsi_cmds = (instance->max_fw_cmds -
4367 MEGASAS_INT_CMDS);
4368 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS));
4369 }
4370
c4a3e0a5
BS		 4371 /*
4372 * Create a pool of commands
4373 */
4374 if (megasas_alloc_cmds(instance))
4375 goto fail_alloc_cmds;
4376
4377 /*
4378 * Allocate memory for reply queue. Length of reply queue should
4379 * be _one_ more than the maximum commands handled by the firmware.
4380 *
4381 * Note: When FW completes commands, it places corresponding contex
4382 * values in this circular reply queue. This circular queue is a fairly
4383 * typical producer-consumer queue. FW is the producer (of completed
4384 * commands) and the driver is the consumer.
4385 */
4386 context_sz = sizeof(u32);
4387 reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
4388
4389 instance->reply_queue = pci_alloc_consistent(instance->pdev,
4390 reply_q_sz,
4391 &instance->reply_queue_h);
4392
4393 if (!instance->reply_queue) {
4394 printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n");
4395 goto fail_reply_queue;
4396 }
4397
31ea7088 4398 if (megasas_issue_init_mfi(instance))
c4a3e0a5 4399 goto fail_fw_init;
c4a3e0a5 4400
d009b576 4401 if (megasas_get_ctrl_info(instance)) {
51087a86
SS		 4402 dev_err(&instance->pdev->dev, "(%d): Could get controller info "
4403 "Fail from %s %d\n", instance->unique_id,
4404 __func__, __LINE__);
4405 goto fail_fw_init;
4406 }
4407
39a98554 4408 instance->fw_support_ieee = 0;
4409 instance->fw_support_ieee =
4410 (instance->instancet->read_fw_status_reg(reg_set) &
4411 0x04000000);
4412
4413 printk(KERN_NOTICE "megasas_init_mfi: fw_support_ieee=%d",
4414 instance->fw_support_ieee);
4415
4416 if (instance->fw_support_ieee)
4417 instance->flag_ieee = 1;
4418
cd50ba8e
AR		 4419 return 0;
4420
4421fail_fw_init:
4422
4423 pci_free_consistent(instance->pdev, reply_q_sz,
4424 instance->reply_queue, instance->reply_queue_h);
4425fail_reply_queue:
4426 megasas_free_cmds(instance);
4427
4428fail_alloc_cmds:
cd50ba8e
AR		 4429 return 1;
4430}
4431
d3557fc8
SS		 4432/*
4433 * megasas_setup_irqs_msix - register legacy interrupts.
4434 * @instance: Adapter soft state
4435 *
4436 * Do not enable interrupt, only setup ISRs.
4437 *
4438 * Return 0 on success.
4439 */
4440static int
4441megasas_setup_irqs_ioapic(struct megasas_instance *instance)
4442{
4443 struct pci_dev *pdev;
4444
4445 pdev = instance->pdev;
4446 instance->irq_context[0].instance = instance;
4447 instance->irq_context[0].MSIxIndex = 0;
4448 if (request_irq(pdev->irq, instance->instancet->service_isr,
4449 IRQF_SHARED, "megasas", &instance->irq_context[0])) {
4450 dev_err(&instance->pdev->dev,
4451 "Failed to register IRQ from %s %d\n",
4452 __func__, __LINE__);
4453 return -1;
4454 }
4455 return 0;
4456}
4457
4458/**
4459 * megasas_setup_irqs_msix - register MSI-x interrupts.
4460 * @instance: Adapter soft state
4461 * @is_probe: Driver probe check
4462 *
4463 * Do not enable interrupt, only setup ISRs.
4464 *
4465 * Return 0 on success.
4466 */
4467static int
4468megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe)
4469{
4470 int i, j, cpu;
4471 struct pci_dev *pdev;
4472
4473 pdev = instance->pdev;
4474
4475 /* Try MSI-x */
4476 cpu = cpumask_first(cpu_online_mask);
4477 for (i = 0; i < instance->msix_vectors; i++) {
4478 instance->irq_context[i].instance = instance;
4479 instance->irq_context[i].MSIxIndex = i;
4480 if (request_irq(instance->msixentry[i].vector,
4481 instance->instancet->service_isr, 0, "megasas",
4482 &instance->irq_context[i])) {
4483 dev_err(&instance->pdev->dev,
4484 "Failed to register IRQ for vector %d.\n", i);
4485 for (j = 0; j < i; j++) {
4486 if (smp_affinity_enable)
4487 irq_set_affinity_hint(
4488 instance->msixentry[j].vector, NULL);
4489 free_irq(instance->msixentry[j].vector,
4490 &instance->irq_context[j]);
4491 }
4492 /* Retry irq register for IO_APIC*/
4493 instance->msix_vectors = 0;
4494 if (is_probe)
4495 return megasas_setup_irqs_ioapic(instance);
4496 else
4497 return -1;
4498 }
4499 if (smp_affinity_enable) {
4500 if (irq_set_affinity_hint(instance->msixentry[i].vector,
4501 get_cpu_mask(cpu)))
4502 dev_err(&instance->pdev->dev,
4503 "Failed to set affinity hint"
4504 " for cpu %d\n", cpu);
4505 cpu = cpumask_next(cpu, cpu_online_mask);
4506 }
4507 }
4508 return 0;
4509}
4510
4511/*
4512 * megasas_destroy_irqs- unregister interrupts.
4513 * @instance: Adapter soft state
4514 * return: void
4515 */
4516static void
4517megasas_destroy_irqs(struct megasas_instance *instance) {
4518
4519 int i;
4520
4521 if (instance->msix_vectors)
4522 for (i = 0; i < instance->msix_vectors; i++) {
4523 if (smp_affinity_enable)
4524 irq_set_affinity_hint(
4525 instance->msixentry[i].vector, NULL);
4526 free_irq(instance->msixentry[i].vector,
4527 &instance->irq_context[i]);
4528 }
4529 else
4530 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4531}
4532
cd50ba8e
AR		 4533/**
4534 * megasas_init_fw - Initializes the FW
4535 * @instance: Adapter soft state
4536 *
4537 * This is the main function for initializing firmware
4538 */
4539
4540static int megasas_init_fw(struct megasas_instance *instance)
4541{
4542 u32 max_sectors_1;
4543 u32 max_sectors_2;
d46a3ad6 4544 u32 tmp_sectors, msix_enable, scratch_pad_2;
11f8a7b3 4545 resource_size_t base_addr;
cd50ba8e 4546 struct megasas_register_set __iomem *reg_set;
51087a86 4547 struct megasas_ctrl_info *ctrl_info = NULL;
cd50ba8e 4548 unsigned long bar_list;
d46a3ad6 4549 int i, loop, fw_msix_count = 0;
229fe47c 4550 struct IOV_111 *iovPtr;
cd50ba8e
AR		 4551
4552 /* Find first memory bar */
4553 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
4554 instance->bar = find_first_bit(&bar_list, sizeof(unsigned long));
cd50ba8e
AR		 4555 if (pci_request_selected_regions(instance->pdev, instance->bar,
4556 "megasas: LSI")) {
4557 printk(KERN_DEBUG "megasas: IO memory region busy!\n");
4558 return -EBUSY;
4559 }
4560
11f8a7b3
BC		 4561 base_addr = pci_resource_start(instance->pdev, instance->bar);
4562 instance->reg_set = ioremap_nocache(base_addr, 8192);
cd50ba8e
AR		 4563
4564 if (!instance->reg_set) {
4565 printk(KERN_DEBUG "megasas: Failed to map IO mem\n");
4566 goto fail_ioremap;
4567 }
4568
4569 reg_set = instance->reg_set;
4570
4571 switch (instance->pdev->device) {
9c915a8c 4572 case PCI_DEVICE_ID_LSI_FUSION:
229fe47c 4573 case PCI_DEVICE_ID_LSI_PLASMA:
36807e67 4574 case PCI_DEVICE_ID_LSI_INVADER:
21d3c710 4575 case PCI_DEVICE_ID_LSI_FURY:
9c915a8c
AR		 4576 instance->instancet = &megasas_instance_template_fusion;
4577 break;
cd50ba8e
AR		 4578 case PCI_DEVICE_ID_LSI_SAS1078R:
4579 case PCI_DEVICE_ID_LSI_SAS1078DE:
4580 instance->instancet = &megasas_instance_template_ppc;
4581 break;
4582 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
4583 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
4584 instance->instancet = &megasas_instance_template_gen2;
4585 break;
4586 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
4587 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
4588 instance->instancet = &megasas_instance_template_skinny;
4589 break;
4590 case PCI_DEVICE_ID_LSI_SAS1064R:
4591 case PCI_DEVICE_ID_DELL_PERC5:
4592 default:
4593 instance->instancet = &megasas_instance_template_xscale;
4594 break;
4595 }
4596
6431f5d7
SS		 4597 if (megasas_transition_to_ready(instance, 0)) {
4598 atomic_set(&instance->fw_reset_no_pci_access, 1);
4599 instance->instancet->adp_reset
4600 (instance, instance->reg_set);
4601 atomic_set(&instance->fw_reset_no_pci_access, 0);
4602 dev_info(&instance->pdev->dev,
4603 "megasas: FW restarted successfully from %s!\n",
4604 __func__);
4605
4606 /*waitting for about 30 second before retry*/
4607 ssleep(30);
4608
4609 if (megasas_transition_to_ready(instance, 0))
4610 goto fail_ready_state;
4611 }
cd50ba8e 4612
d46a3ad6
SS		 4613 /*
4614 * MSI-X host index 0 is common for all adapter.
4615 * It is used for all MPT based Adapters.
4616 */
4617 instance->reply_post_host_index_addr[0] =
4618 (u32 *)((u8 *)instance->reg_set +
4619 MPI2_REPLY_POST_HOST_INDEX_OFFSET);
4620
3f1abce4
AR		 4621 /* Check if MSI-X is supported while in ready state */
4622 msix_enable = (instance->instancet->read_fw_status_reg(reg_set) &
4623 0x4000000) >> 0x1a;
c8e858fe 4624 if (msix_enable && !msix_disable) {
d46a3ad6
SS		 4625 scratch_pad_2 = readl
4626 (&instance->reg_set->outbound_scratch_pad_2);
c8e858fe 4627 /* Check max MSI-X vectors */
229fe47c
AR		 4628 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
4629 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA)) {
d46a3ad6
SS		 4630 instance->msix_vectors = (scratch_pad_2
4631 & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
4632 fw_msix_count = instance->msix_vectors;
079eaddf
AR		 4633 if (msix_vectors)
4634 instance->msix_vectors =
4635 min(msix_vectors,
4636 instance->msix_vectors);
d46a3ad6
SS		 4637 } else if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)
4638 || (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
4639 /* Invader/Fury supports more than 8 MSI-X */
4640 instance->msix_vectors = ((scratch_pad_2
4641 & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
4642 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
4643 fw_msix_count = instance->msix_vectors;
4644 /* Save 1-15 reply post index address to local memory
4645 * Index 0 is already saved from reg offset
4646 * MPI2_REPLY_POST_HOST_INDEX_OFFSET
4647 */
4648 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
4649 instance->reply_post_host_index_addr[loop] =
4650 (u32 *)((u8 *)instance->reg_set +
4651 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
4652 + (loop * 0x10));
4653 }
4654 if (msix_vectors)
4655 instance->msix_vectors = min(msix_vectors,
4656 instance->msix_vectors);
c8e858fe
AR		 4657 } else
4658 instance->msix_vectors = 1;
4659 /* Don't bother allocating more MSI-X vectors than cpus */
4660 instance->msix_vectors = min(instance->msix_vectors,
4661 (unsigned int)num_online_cpus());
4662 for (i = 0; i < instance->msix_vectors; i++)
4663 instance->msixentry[i].entry = i;
8ae80ed1
AG		 4664 i = pci_enable_msix_range(instance->pdev, instance->msixentry,
4665 1, instance->msix_vectors);
c12de882 4666 if (i > 0)
8ae80ed1
AG		 4667 instance->msix_vectors = i;
4668 else
c8e858fe 4669 instance->msix_vectors = 0;
d46a3ad6 4670
d3557fc8
SS		 4671 dev_info(&instance->pdev->dev,
4672 "firmware supports msix\t: (%d)", fw_msix_count);
4673 dev_info(&instance->pdev->dev,
4674 "current msix/online cpus\t: (%d/%d)\n",
4675 instance->msix_vectors, (unsigned int)num_online_cpus());
4676
4677 if (instance->msix_vectors ?
4678 megasas_setup_irqs_msix(instance, 1) :
4679 megasas_setup_irqs_ioapic(instance))
4680 goto fail_setup_irqs;
c8e858fe 4681 }
3f1abce4 4682
51087a86
SS		 4683 instance->ctrl_info = kzalloc(sizeof(struct megasas_ctrl_info),
4684 GFP_KERNEL);
4685 if (instance->ctrl_info == NULL)
4686 goto fail_init_adapter;
4687
4688 /*
4689 * Below are default value for legacy Firmware.
4690 * non-fusion based controllers
4691 */
4692 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
4693 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
cd50ba8e
AR		 4694 /* Get operational params, sge flags, send init cmd to controller */
4695 if (instance->instancet->init_adapter(instance))
eb1b1237 4696 goto fail_init_adapter;
d3557fc8 4697 instance->instancet->enable_intr(instance);
cd50ba8e
AR		 4698
4699 printk(KERN_ERR "megasas: INIT adapter done\n");
4700
39a98554 4701 /** for passthrough
4702 * the following function will get the PD LIST.
4703 */
4704
81e403ce
YB		 4705 memset(instance->pd_list, 0 ,
4706 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
58968fc8
HR		 4707 if (megasas_get_pd_list(instance) < 0) {
4708 printk(KERN_ERR "megasas: failed to get PD list\n");
d3557fc8 4709 goto fail_get_pd_list;
58968fc8 4710 }
81e403ce 4711
bdc6fb8d 4712 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
21c9e160
AR		 4713 if (megasas_ld_list_query(instance,
4714 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
4715 megasas_get_ld_list(instance);
bdc6fb8d 4716
c4a3e0a5
BS		 4717 /*
4718 * Compute the max allowed sectors per IO: The controller info has two
4719 * limits on max sectors. Driver should use the minimum of these two.
4720 *
4721 * 1 << stripe_sz_ops.min = max sectors per strip
4722 *
4723 * Note that older firmwares ( < FW ver 30) didn't report information
4724 * to calculate max_sectors_1. So the number ended up as zero always.
4725 */
14faea9f 4726 tmp_sectors = 0;
51087a86 4727 ctrl_info = instance->ctrl_info;
c4a3e0a5 4728
51087a86
SS		 4729 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
4730 le16_to_cpu(ctrl_info->max_strips_per_io);
4731 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
404a8a1a 4732
51087a86 4733 tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2);
bc93d425 4734
51087a86
SS		 4735 /*Check whether controller is iMR or MR */
4736 if (ctrl_info->memory_size) {
4737 instance->is_imr = 0;
4738 dev_info(&instance->pdev->dev, "Controller type: MR,"
4739 "Memory size is: %dMB\n",
4740 le16_to_cpu(ctrl_info->memory_size));
4741 } else {
4742 instance->is_imr = 1;
4743 dev_info(&instance->pdev->dev,
4744 "Controller type: iMR\n");
4745 }
51087a86
SS		 4746 instance->disableOnlineCtrlReset =
4747 ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset;
51087a86
SS		 4748 instance->mpio = ctrl_info->adapterOperations2.mpio;
4749 instance->UnevenSpanSupport =
4750 ctrl_info->adapterOperations2.supportUnevenSpans;
4751 if (instance->UnevenSpanSupport) {
4752 struct fusion_context *fusion = instance->ctrl_context;
4753
4754 dev_info(&instance->pdev->dev, "FW supports: "
4755 "UnevenSpanSupport=%x\n", instance->UnevenSpanSupport);
4756 if (MR_ValidateMapInfo(instance))
4757 fusion->fast_path_io = 1;
4758 else
4759 fusion->fast_path_io = 0;
fc62b3fc 4760
51087a86
SS		 4761 }
4762 if (ctrl_info->host_interface.SRIOV) {
4763 if (!ctrl_info->adapterOperations2.activePassive)
4764 instance->PlasmaFW111 = 1;
fc62b3fc 4765
51087a86
SS		 4766 if (!instance->PlasmaFW111)
4767 instance->requestorId =
4768 ctrl_info->iov.requestorId;
4769 else {
4770 iovPtr = (struct IOV_111 *)((unsigned char *)ctrl_info + IOV_111_OFFSET);
4771 instance->requestorId = iovPtr->requestorId;
fc62b3fc 4772 }
51087a86
SS		 4773 dev_warn(&instance->pdev->dev, "I am VF "
4774 "requestorId %d\n", instance->requestorId);
4775 }
4776
51087a86
SS		 4777 instance->crash_dump_fw_support =
4778 ctrl_info->adapterOperations3.supportCrashDump;
4779 instance->crash_dump_drv_support =
4780 (instance->crash_dump_fw_support &&
4781 instance->crash_dump_buf);
4782 if (instance->crash_dump_drv_support) {
4783 dev_info(&instance->pdev->dev, "Firmware Crash dump "
4784 "feature is supported\n");
4785 megasas_set_crash_dump_params(instance,
4786 MR_CRASH_BUF_TURN_OFF);
4787
4788 } else {
4789 if (instance->crash_dump_buf)
4790 pci_free_consistent(instance->pdev,
4791 CRASH_DMA_BUF_SIZE,
4792 instance->crash_dump_buf,
4793 instance->crash_dump_h);
4794 instance->crash_dump_buf = NULL;
14faea9f 4795 }
7497cde8
SS		 4796
4797 instance->secure_jbod_support =
4798 ctrl_info->adapterOperations3.supportSecurityonJBOD;
4799 if (instance->secure_jbod_support)
4800 dev_info(&instance->pdev->dev, "Firmware supports Secure JBOD\n");
14faea9f 4801 instance->max_sectors_per_req = instance->max_num_sge *
4802 PAGE_SIZE / 512;
4803 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
4804 instance->max_sectors_per_req = tmp_sectors;
c4a3e0a5 4805
ae09a6c1
SS		 4806 /* Check for valid throttlequeuedepth module parameter */
4807 if (throttlequeuedepth &&
4808 throttlequeuedepth <= instance->max_scsi_cmds)
4809 instance->throttlequeuedepth = throttlequeuedepth;
4810 else
4811 instance->throttlequeuedepth =
4812 MEGASAS_THROTTLE_QUEUE_DEPTH;
4813
5d018ad0
SP		 4814 /*
4815 * Setup tasklet for cmd completion
4816 */
4817
f86c5424 4818 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
ad84db2e 4819 (unsigned long)instance);
4820
229fe47c
AR		 4821 /* Launch SR-IOV heartbeat timer */
4822 if (instance->requestorId) {
4823 if (!megasas_sriov_start_heartbeat(instance, 1))
4824 megasas_start_timer(instance,
4825 &instance->sriov_heartbeat_timer,
4826 megasas_sriov_heartbeat_handler,
4827 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
4828 else
4829 instance->skip_heartbeat_timer_del = 1;
4830 }
4831
c4a3e0a5
BS		 4832 return 0;
4833
d3557fc8
SS		 4834fail_get_pd_list:
4835 instance->instancet->disable_intr(instance);
eb1b1237 4836fail_init_adapter:
d3557fc8
SS		 4837 megasas_destroy_irqs(instance);
4838fail_setup_irqs:
4839 if (instance->msix_vectors)
4840 pci_disable_msix(instance->pdev);
4841 instance->msix_vectors = 0;
cd50ba8e 4842fail_ready_state:
51087a86
SS		 4843 kfree(instance->ctrl_info);
4844 instance->ctrl_info = NULL;
c4a3e0a5
BS		 4845 iounmap(instance->reg_set);
4846
4847 fail_ioremap:
b6d5d880 4848 pci_release_selected_regions(instance->pdev, instance->bar);
c4a3e0a5
BS		 4849
4850 return -EINVAL;
4851}
4852
4853/**
4854 * megasas_release_mfi - Reverses the FW initialization
4855 * @intance: Adapter soft state
4856 */
4857static void megasas_release_mfi(struct megasas_instance *instance)
4858{
9c915a8c 4859 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
c4a3e0a5 4860
9c915a8c
AR		 4861 if (instance->reply_queue)
4862 pci_free_consistent(instance->pdev, reply_q_sz,
c4a3e0a5
BS		 4863 instance->reply_queue, instance->reply_queue_h);
4864
4865 megasas_free_cmds(instance);
4866
4867 iounmap(instance->reg_set);
4868
b6d5d880 4869 pci_release_selected_regions(instance->pdev, instance->bar);
c4a3e0a5
BS		 4870}
4871
4872/**
4873 * megasas_get_seq_num - Gets latest event sequence numbers
4874 * @instance: Adapter soft state
4875 * @eli: FW event log sequence numbers information
4876 *
4877 * FW maintains a log of all events in a non-volatile area. Upper layers would
4878 * usually find out the latest sequence number of the events, the seq number at
4879 * the boot etc. They would "read" all the events below the latest seq number
4880 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
4881 * number), they would subsribe to AEN (asynchronous event notification) and
4882 * wait for the events to happen.
4883 */
4884static int
4885megasas_get_seq_num(struct megasas_instance *instance,
4886 struct megasas_evt_log_info *eli)
4887{
4888 struct megasas_cmd *cmd;
4889 struct megasas_dcmd_frame *dcmd;
4890 struct megasas_evt_log_info *el_info;
4891 dma_addr_t el_info_h = 0;
4892
4893 cmd = megasas_get_cmd(instance);
4894
4895 if (!cmd) {
4896 return -ENOMEM;
4897 }
4898
4899 dcmd = &cmd->frame->dcmd;
4900 el_info = pci_alloc_consistent(instance->pdev,
4901 sizeof(struct megasas_evt_log_info),
4902 &el_info_h);
4903
4904 if (!el_info) {
4905 megasas_return_cmd(instance, cmd);
4906 return -ENOMEM;
4907 }
4908
4909 memset(el_info, 0, sizeof(*el_info));
4910 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4911
4912 dcmd->cmd = MFI_CMD_DCMD;
4913 dcmd->cmd_status = 0x0;
4914 dcmd->sge_count = 1;
94cd65dd 4915 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
c4a3e0a5 4916 dcmd->timeout = 0;
780a3762 4917 dcmd->pad_0 = 0;
94cd65dd
SS		 4918 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
4919 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
4920 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(el_info_h);
4921 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_log_info));
c4a3e0a5 4922
cfbe7554
SS		 4923 if (megasas_issue_blocked_cmd(instance, cmd, 30))
4924 dev_err(&instance->pdev->dev, "Command timedout"
4925 "from %s\n", __func__);
4926 else {
4927 /*
4928 * Copy the data back into callers buffer
4929 */
4930 eli->newest_seq_num = le32_to_cpu(el_info->newest_seq_num);
4931 eli->oldest_seq_num = le32_to_cpu(el_info->oldest_seq_num);
4932 eli->clear_seq_num = le32_to_cpu(el_info->clear_seq_num);
4933 eli->shutdown_seq_num = le32_to_cpu(el_info->shutdown_seq_num);
4934 eli->boot_seq_num = le32_to_cpu(el_info->boot_seq_num);
4935 }
c4a3e0a5
BS		 4936
4937 pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info),
4938 el_info, el_info_h);
4939
90dc9d98
SS		 4940 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
4941 megasas_return_mfi_mpt_pthr(instance, cmd,
4942 cmd->mpt_pthr_cmd_blocked);
4943 else
4944 megasas_return_cmd(instance, cmd);
c4a3e0a5
BS		 4945
4946 return 0;
4947}
4948
4949/**
4950 * megasas_register_aen - Registers for asynchronous event notification
4951 * @instance: Adapter soft state
4952 * @seq_num: The starting sequence number
4953 * @class_locale: Class of the event
4954 *
4955 * This function subscribes for AEN for events beyond the @seq_num. It requests
4956 * to be notified if and only if the event is of type @class_locale
4957 */
4958static int
4959megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
4960 u32 class_locale_word)
4961{
4962 int ret_val;
4963 struct megasas_cmd *cmd;
4964 struct megasas_dcmd_frame *dcmd;
4965 union megasas_evt_class_locale curr_aen;
4966 union megasas_evt_class_locale prev_aen;
4967
4968 /*
4969 * If there an AEN pending already (aen_cmd), check if the
4970 * class_locale of that pending AEN is inclusive of the new
4971 * AEN request we currently have. If it is, then we don't have
4972 * to do anything. In other words, whichever events the current
4973 * AEN request is subscribing to, have already been subscribed
4974 * to.
4975 *
4976 * If the old_cmd is _not_ inclusive, then we have to abort
4977 * that command, form a class_locale that is superset of both
4978 * old and current and re-issue to the FW
4979 */
4980
4981 curr_aen.word = class_locale_word;
4982
4983 if (instance->aen_cmd) {
4984
4985 prev_aen.word = instance->aen_cmd->frame->dcmd.mbox.w[1];
94cd65dd 4986 prev_aen.members.locale = le16_to_cpu(prev_aen.members.locale);
c4a3e0a5
BS		 4987
4988 /*
4989 * A class whose enum value is smaller is inclusive of all
4990 * higher values. If a PROGRESS (= -1) was previously
4991 * registered, then a new registration requests for higher
4992 * classes need not be sent to FW. They are automatically
4993 * included.
4994 *
4995 * Locale numbers don't have such hierarchy. They are bitmap
4996 * values
4997 */
4998 if ((prev_aen.members.class <= curr_aen.members.class) &&
3993a862 4999 !((prev_aen.members.locale & curr_aen.members.locale) ^
c4a3e0a5
BS		 5000 curr_aen.members.locale)) {
5001 /*
5002 * Previously issued event registration includes
5003 * current request. Nothing to do.
5004 */
5005 return 0;
5006 } else {
3993a862 5007 curr_aen.members.locale |= prev_aen.members.locale;
c4a3e0a5
BS		 5008
5009 if (prev_aen.members.class < curr_aen.members.class)
5010 curr_aen.members.class = prev_aen.members.class;
5011
5012 instance->aen_cmd->abort_aen = 1;
5013 ret_val = megasas_issue_blocked_abort_cmd(instance,
5014 instance->
cfbe7554 5015 aen_cmd, 30);
c4a3e0a5
BS		 5016
5017 if (ret_val) {
5018 printk(KERN_DEBUG "megasas: Failed to abort "
5019 "previous AEN command\n");
5020 return ret_val;
5021 }
5022 }
5023 }
5024
5025 cmd = megasas_get_cmd(instance);
5026
5027 if (!cmd)
5028 return -ENOMEM;
5029
5030 dcmd = &cmd->frame->dcmd;
5031
5032 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
5033
5034 /*
5035 * Prepare DCMD for aen registration
5036 */
5037 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5038
5039 dcmd->cmd = MFI_CMD_DCMD;
5040 dcmd->cmd_status = 0x0;
5041 dcmd->sge_count = 1;
94cd65dd 5042 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
c4a3e0a5 5043 dcmd->timeout = 0;
780a3762 5044 dcmd->pad_0 = 0;
94cd65dd
SS		 5045 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
5046 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
5047 dcmd->mbox.w[0] = cpu_to_le32(seq_num);
39a98554 5048 instance->last_seq_num = seq_num;
94cd65dd
SS		 5049 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
5050 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->evt_detail_h);
5051 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_detail));
c4a3e0a5 5052
f4c9a131
YB		 5053 if (instance->aen_cmd != NULL) {
5054 megasas_return_cmd(instance, cmd);
5055 return 0;
5056 }
5057
c4a3e0a5
BS		 5058 /*
5059 * Store reference to the cmd used to register for AEN. When an
5060 * application wants us to register for AEN, we have to abort this
5061 * cmd and re-register with a new EVENT LOCALE supplied by that app
5062 */
5063 instance->aen_cmd = cmd;
5064
5065 /*
5066 * Issue the aen registration frame
5067 */
9c915a8c 5068 instance->instancet->issue_dcmd(instance, cmd);
c4a3e0a5
BS		 5069
5070 return 0;
5071}
5072
5073/**
5074 * megasas_start_aen - Subscribes to AEN during driver load time
5075 * @instance: Adapter soft state
5076 */
5077static int megasas_start_aen(struct megasas_instance *instance)
5078{
5079 struct megasas_evt_log_info eli;
5080 union megasas_evt_class_locale class_locale;
5081
5082 /*
5083 * Get the latest sequence number from FW
5084 */
5085 memset(&eli, 0, sizeof(eli));
5086
5087 if (megasas_get_seq_num(instance, &eli))
5088 return -1;
5089
5090 /*
5091 * Register AEN with FW for latest sequence number plus 1
5092 */
5093 class_locale.members.reserved = 0;
5094 class_locale.members.locale = MR_EVT_LOCALE_ALL;
5095 class_locale.members.class = MR_EVT_CLASS_DEBUG;
5096
94cd65dd 5097 return megasas_register_aen(instance,
3993a862 5098 eli.newest_seq_num + 1,
94cd65dd 5099 class_locale.word);
c4a3e0a5
BS		 5100}
5101
5102/**
5103 * megasas_io_attach - Attaches this driver to SCSI mid-layer
5104 * @instance: Adapter soft state
5105 */
5106static int megasas_io_attach(struct megasas_instance *instance)
5107{
5108 struct Scsi_Host *host = instance->host;
5109
5110 /*
5111 * Export parameters required by SCSI mid-layer
5112 */
5113 host->irq = instance->pdev->irq;
5114 host->unique_id = instance->unique_id;
ae09a6c1 5115 host->can_queue = instance->max_scsi_cmds;
c4a3e0a5
BS		 5116 host->this_id = instance->init_id;
5117 host->sg_tablesize = instance->max_num_sge;
42a8d2b3
AR		 5118
5119 if (instance->fw_support_ieee)
5120 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
5121
1fd10685
YB		 5122 /*
5123 * Check if the module parameter value for max_sectors can be used
5124 */
5125 if (max_sectors && max_sectors < instance->max_sectors_per_req)
5126 instance->max_sectors_per_req = max_sectors;
5127 else {
5128 if (max_sectors) {
5129 if (((instance->pdev->device ==
5130 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
5131 (instance->pdev->device ==
5132 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
5133 (max_sectors <= MEGASAS_MAX_SECTORS)) {
5134 instance->max_sectors_per_req = max_sectors;
5135 } else {
5136 printk(KERN_INFO "megasas: max_sectors should be > 0"
5137 "and <= %d (or < 1MB for GEN2 controller)\n",
5138 instance->max_sectors_per_req);
5139 }
5140 }
5141 }
5142
c4a3e0a5 5143 host->max_sectors = instance->max_sectors_per_req;
9c915a8c 5144 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
c4a3e0a5
BS		 5145 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
5146 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
5147 host->max_lun = MEGASAS_MAX_LUN;
122da302 5148 host->max_cmd_len = 16;
c4a3e0a5 5149
9c915a8c 5150 /* Fusion only supports host reset */
36807e67 5151 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
229fe47c 5152 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
21d3c710
SS		 5153 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
5154 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
9c915a8c
AR		 5155 host->hostt->eh_device_reset_handler = NULL;
5156 host->hostt->eh_bus_reset_handler = NULL;
5157 }
5158
c4a3e0a5
BS		 5159 /*
5160 * Notify the mid-layer about the new controller
5161 */
5162 if (scsi_add_host(host, &instance->pdev->dev)) {
5163 printk(KERN_DEBUG "megasas: scsi_add_host failed\n");
5164 return -ENODEV;
5165 }
5166
c4a3e0a5
BS		 5167 return 0;
5168}
5169
31ea7088 5170static int
5171megasas_set_dma_mask(struct pci_dev *pdev)
5172{
5173 /*
5174 * All our contollers are capable of performing 64-bit DMA
5175 */
5176 if (IS_DMA64) {
6a35528a 5177 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) {
31ea7088 5178
284901a9 5179 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
31ea7088 5180 goto fail_set_dma_mask;
5181 }
5182 } else {
284901a9 5183 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
31ea7088 5184 goto fail_set_dma_mask;
5185 }
46de63e2
SS		 5186 /*
5187 * Ensure that all data structures are allocated in 32-bit
5188 * memory.
5189 */
5190 if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) {
5191 /* Try 32bit DMA mask and 32 bit Consistent dma mask */
5192 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))
5193 && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
5194 dev_info(&pdev->dev, "set 32bit DMA mask"
5195 "and 32 bit consistent mask\n");
5196 else
5197 goto fail_set_dma_mask;
5198 }
94cd65dd 5199
31ea7088 5200 return 0;
5201
5202fail_set_dma_mask:
5203 return 1;
5204}
5205
c4a3e0a5
BS		 5206/**
5207 * megasas_probe_one - PCI hotplug entry point
5208 * @pdev: PCI device structure
0d49016b 5209 * @id: PCI ids of supported hotplugged adapter
c4a3e0a5 5210 */
6f039790
GKH		 5211static int megasas_probe_one(struct pci_dev *pdev,
5212 const struct pci_device_id *id)
c4a3e0a5 5213{
d3557fc8 5214 int rval, pos;
c4a3e0a5
BS		 5215 struct Scsi_Host *host;
5216 struct megasas_instance *instance;
66192dfe 5217 u16 control = 0;
51087a86 5218 struct fusion_context *fusion = NULL;
66192dfe
AR		 5219
5220 /* Reset MSI-X in the kdump kernel */
5221 if (reset_devices) {
5222 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
5223 if (pos) {
99369065 5224 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
66192dfe
AR		 5225 &control);
5226 if (control & PCI_MSIX_FLAGS_ENABLE) {
5227 dev_info(&pdev->dev, "resetting MSI-X\n");
5228 pci_write_config_word(pdev,
99369065 5229 pos + PCI_MSIX_FLAGS,
66192dfe
AR		 5230 control &
5231 ~PCI_MSIX_FLAGS_ENABLE);
5232 }
5233 }
5234 }
c4a3e0a5
BS		 5235
5236 /*
5237 * Announce PCI information
5238 */
5239 printk(KERN_INFO "megasas: %#4.04x:%#4.04x:%#4.04x:%#4.04x: ",
5240 pdev->vendor, pdev->device, pdev->subsystem_vendor,
5241 pdev->subsystem_device);
5242
5243 printk("bus %d:slot %d:func %d\n",
5244 pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));
5245
5246 /*
5247 * PCI prepping: enable device set bus mastering and dma mask
5248 */
aeab3fd7 5249 rval = pci_enable_device_mem(pdev);
c4a3e0a5
BS		 5250
5251 if (rval) {
5252 return rval;
5253 }
5254
5255 pci_set_master(pdev);
5256
31ea7088 5257 if (megasas_set_dma_mask(pdev))
5258 goto fail_set_dma_mask;
c4a3e0a5
BS		 5259
5260 host = scsi_host_alloc(&megasas_template,
5261 sizeof(struct megasas_instance));
5262
5263 if (!host) {
5264 printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n");
5265 goto fail_alloc_instance;
5266 }
5267
5268 instance = (struct megasas_instance *)host->hostdata;
5269 memset(instance, 0, sizeof(*instance));
39a98554 5270 atomic_set( &instance->fw_reset_no_pci_access, 0 );
9c915a8c 5271 instance->pdev = pdev;
c4a3e0a5 5272
9c915a8c
AR		 5273 switch (instance->pdev->device) {
5274 case PCI_DEVICE_ID_LSI_FUSION:
229fe47c 5275 case PCI_DEVICE_ID_LSI_PLASMA:
36807e67 5276 case PCI_DEVICE_ID_LSI_INVADER:
21d3c710 5277 case PCI_DEVICE_ID_LSI_FURY:
9c915a8c 5278 {
51087a86
SS		 5279 instance->ctrl_context_pages =
5280 get_order(sizeof(struct fusion_context));
5281 instance->ctrl_context = (void *)__get_free_pages(GFP_KERNEL,
5282 instance->ctrl_context_pages);
9c915a8c
AR		 5283 if (!instance->ctrl_context) {
5284 printk(KERN_DEBUG "megasas: Failed to allocate "
5285 "memory for Fusion context info\n");
5286 goto fail_alloc_dma_buf;
5287 }
5288 fusion = instance->ctrl_context;
d009b576
SS		 5289 memset(fusion, 0,
5290 ((1 << PAGE_SHIFT) << instance->ctrl_context_pages));
9c915a8c 5291 INIT_LIST_HEAD(&fusion->cmd_pool);
90dc9d98 5292 spin_lock_init(&fusion->mpt_pool_lock);
9c915a8c
AR		 5293 }
5294 break;
5295 default: /* For all other supported controllers */
5296
5297 instance->producer =
5298 pci_alloc_consistent(pdev, sizeof(u32),
5299 &instance->producer_h);
5300 instance->consumer =
5301 pci_alloc_consistent(pdev, sizeof(u32),
5302 &instance->consumer_h);
5303
5304 if (!instance->producer || !instance->consumer) {
5305 printk(KERN_DEBUG "megasas: Failed to allocate"
5306 "memory for producer, consumer\n");
5307 goto fail_alloc_dma_buf;
5308 }
c4a3e0a5 5309
9c915a8c
AR		 5310 *instance->producer = 0;
5311 *instance->consumer = 0;
5312 break;
c4a3e0a5
BS		 5313 }
5314
fc62b3fc
SS		 5315 /* Crash dump feature related initialisation*/
5316 instance->drv_buf_index = 0;
5317 instance->drv_buf_alloc = 0;
5318 instance->crash_dump_fw_support = 0;
5319 instance->crash_dump_app_support = 0;
5320 instance->fw_crash_state = UNAVAILABLE;
5321 spin_lock_init(&instance->crashdump_lock);
5322 instance->crash_dump_buf = NULL;
5323
5324 if (!reset_devices)
5325 instance->crash_dump_buf = pci_alloc_consistent(pdev,
5326 CRASH_DMA_BUF_SIZE,
5327 &instance->crash_dump_h);
5328 if (!instance->crash_dump_buf)
5329 dev_err(&instance->pdev->dev, "Can't allocate Firmware "
5330 "crash dump DMA buffer\n");
5331
c3518837 5332 megasas_poll_wait_aen = 0;
f4c9a131 5333 instance->flag_ieee = 0;
7e8a75f4 5334 instance->ev = NULL;
39a98554 5335 instance->issuepend_done = 1;
5336 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
404a8a1a 5337 instance->is_imr = 0;
c4a3e0a5
BS		 5338
5339 instance->evt_detail = pci_alloc_consistent(pdev,
5340 sizeof(struct
5341 megasas_evt_detail),
5342 &instance->evt_detail_h);
5343
5344 if (!instance->evt_detail) {
5345 printk(KERN_DEBUG "megasas: Failed to allocate memory for "
5346 "event detail structure\n");
5347 goto fail_alloc_dma_buf;
5348 }
5349
5350 /*
5351 * Initialize locks and queues
5352 */
5353 INIT_LIST_HEAD(&instance->cmd_pool);
39a98554 5354 INIT_LIST_HEAD(&instance->internal_reset_pending_q);
c4a3e0a5 5355
e4a082c7
SP		 5356 atomic_set(&instance->fw_outstanding,0);
5357
c4a3e0a5
BS		 5358 init_waitqueue_head(&instance->int_cmd_wait_q);
5359 init_waitqueue_head(&instance->abort_cmd_wait_q);
5360
90dc9d98 5361 spin_lock_init(&instance->mfi_pool_lock);
39a98554 5362 spin_lock_init(&instance->hba_lock);
7343eb65 5363 spin_lock_init(&instance->completion_lock);
c4a3e0a5 5364
e5a69e27 5365 mutex_init(&instance->aen_mutex);
9c915a8c 5366 mutex_init(&instance->reset_mutex);
c4a3e0a5
BS		 5367
5368 /*
5369 * Initialize PCI related and misc parameters
5370 */
c4a3e0a5
BS		 5371 instance->host = host;
5372 instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
5373 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
51087a86 5374 instance->ctrl_info = NULL;
c4a3e0a5 5375
ae09a6c1 5376
7bebf5c7 5377 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
ae09a6c1 5378 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
f4c9a131 5379 instance->flag_ieee = 1;
7bebf5c7 5380
658dcedb 5381 megasas_dbg_lvl = 0;
05e9ebbe 5382 instance->flag = 0;
0c79e681 5383 instance->unload = 1;
05e9ebbe 5384 instance->last_time = 0;
39a98554 5385 instance->disableOnlineCtrlReset = 1;
bc93d425 5386 instance->UnevenSpanSupport = 0;
39a98554 5387
36807e67 5388 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
229fe47c 5389 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
21d3c710 5390 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
fc62b3fc 5391 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
9c915a8c 5392 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
fc62b3fc
SS		 5393 INIT_WORK(&instance->crash_init, megasas_fusion_crash_dump_wq);
5394 } else
9c915a8c 5395 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
658dcedb 5396
0a77066a
AR		 5397 /*
5398 * Initialize MFI Firmware
5399 */
5400 if (megasas_init_fw(instance))
5401 goto fail_init_mfi;
5402
229fe47c
AR		 5403 if (instance->requestorId) {
5404 if (instance->PlasmaFW111) {
5405 instance->vf_affiliation_111 =
5406 pci_alloc_consistent(pdev, sizeof(struct MR_LD_VF_AFFILIATION_111),
5407 &instance->vf_affiliation_111_h);
5408 if (!instance->vf_affiliation_111)
5409 printk(KERN_WARNING "megasas: Can't allocate "
5410 "memory for VF affiliation buffer\n");
5411 } else {
5412 instance->vf_affiliation =
5413 pci_alloc_consistent(pdev,
5414 (MAX_LOGICAL_DRIVES + 1) *
5415 sizeof(struct MR_LD_VF_AFFILIATION),
5416 &instance->vf_affiliation_h);
5417 if (!instance->vf_affiliation)
5418 printk(KERN_WARNING "megasas: Can't allocate "
5419 "memory for VF affiliation buffer\n");
5420 }
5421 }
5422
c4a3e0a5
BS		 5423 /*
5424 * Store instance in PCI softstate
5425 */
5426 pci_set_drvdata(pdev, instance);
5427
5428 /*
5429 * Add this controller to megasas_mgmt_info structure so that it
5430 * can be exported to management applications
5431 */
5432 megasas_mgmt_info.count++;
5433 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
5434 megasas_mgmt_info.max_index++;
5435
541f90b7
AR		 5436 /*
5437 * Register with SCSI mid-layer
5438 */
5439 if (megasas_io_attach(instance))
5440 goto fail_io_attach;
5441
5442 instance->unload = 0;
aa00832b
SS		 5443 /*
5444 * Trigger SCSI to scan our drives
5445 */
5446 scsi_scan_host(host);
541f90b7 5447
c4a3e0a5
BS		 5448 /*
5449 * Initiate AEN (Asynchronous Event Notification)
5450 */
5451 if (megasas_start_aen(instance)) {
5452 printk(KERN_DEBUG "megasas: start aen failed\n");
5453 goto fail_start_aen;
5454 }
5455
9ea81f81
AR		 5456 /* Get current SR-IOV LD/VF affiliation */
5457 if (instance->requestorId)
5458 megasas_get_ld_vf_affiliation(instance, 1);
5459
c4a3e0a5
BS		 5460 return 0;
5461
5462 fail_start_aen:
5463 fail_io_attach:
5464 megasas_mgmt_info.count--;
5465 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
5466 megasas_mgmt_info.max_index--;
5467
d46a3ad6 5468 instance->instancet->disable_intr(instance);
d3557fc8
SS		 5469 megasas_destroy_irqs(instance);
5470
36807e67 5471 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
229fe47c 5472 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
21d3c710
SS		 5473 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
5474 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
eb1b1237
AR		 5475 megasas_release_fusion(instance);
5476 else
5477 megasas_release_mfi(instance);
c8e858fe 5478 if (instance->msix_vectors)
0a77066a 5479 pci_disable_msix(instance->pdev);
d3557fc8 5480fail_init_mfi:
c4a3e0a5
BS		 5481 fail_alloc_dma_buf:
5482 if (instance->evt_detail)
5483 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
5484 instance->evt_detail,
5485 instance->evt_detail_h);
5486
eb1b1237 5487 if (instance->producer)
c4a3e0a5
BS		 5488 pci_free_consistent(pdev, sizeof(u32), instance->producer,
5489 instance->producer_h);
5490 if (instance->consumer)
5491 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
5492 instance->consumer_h);
5493 scsi_host_put(host);
5494
5495 fail_alloc_instance:
5496 fail_set_dma_mask:
5497 pci_disable_device(pdev);
5498
5499 return -ENODEV;
5500}
5501
5502/**
5503 * megasas_flush_cache - Requests FW to flush all its caches
5504 * @instance: Adapter soft state
5505 */
5506static void megasas_flush_cache(struct megasas_instance *instance)
5507{
5508 struct megasas_cmd *cmd;
5509 struct megasas_dcmd_frame *dcmd;
5510
39a98554 5511 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
5512 return;
5513
c4a3e0a5
BS		 5514 cmd = megasas_get_cmd(instance);
5515
5516 if (!cmd)
5517 return;
5518
5519 dcmd = &cmd->frame->dcmd;
5520
5521 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5522
5523 dcmd->cmd = MFI_CMD_DCMD;
5524 dcmd->cmd_status = 0x0;
5525 dcmd->sge_count = 0;
94cd65dd 5526 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
c4a3e0a5 5527 dcmd->timeout = 0;
780a3762 5528 dcmd->pad_0 = 0;
c4a3e0a5 5529 dcmd->data_xfer_len = 0;
94cd65dd 5530 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
c4a3e0a5
BS		 5531 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
5532
cfbe7554
SS		 5533 if (megasas_issue_blocked_cmd(instance, cmd, 30))
5534 dev_err(&instance->pdev->dev, "Command timedout"
5535 " from %s\n", __func__);
c4a3e0a5 5536
90dc9d98
SS		 5537 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
5538 megasas_return_mfi_mpt_pthr(instance, cmd,
5539 cmd->mpt_pthr_cmd_blocked);
5540 else
5541 megasas_return_cmd(instance, cmd);
c4a3e0a5
BS		 5542
5543 return;
5544}
5545
5546/**
5547 * megasas_shutdown_controller - Instructs FW to shutdown the controller
5548 * @instance: Adapter soft state
31ea7088 5549 * @opcode: Shutdown/Hibernate
c4a3e0a5 5550 */
31ea7088 5551static void megasas_shutdown_controller(struct megasas_instance *instance,
5552 u32 opcode)
c4a3e0a5
BS		 5553{
5554 struct megasas_cmd *cmd;
5555 struct megasas_dcmd_frame *dcmd;
5556
39a98554 5557 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
5558 return;
5559
c4a3e0a5
BS		 5560 cmd = megasas_get_cmd(instance);
5561
5562 if (!cmd)
5563 return;
5564
5565 if (instance->aen_cmd)
cfbe7554
SS		 5566 megasas_issue_blocked_abort_cmd(instance,
5567 instance->aen_cmd, 30);
9c915a8c
AR		 5568 if (instance->map_update_cmd)
5569 megasas_issue_blocked_abort_cmd(instance,
cfbe7554 5570 instance->map_update_cmd, 30);
c4a3e0a5
BS		 5571 dcmd = &cmd->frame->dcmd;
5572
5573 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5574
5575 dcmd->cmd = MFI_CMD_DCMD;
5576 dcmd->cmd_status = 0x0;
5577 dcmd->sge_count = 0;
94cd65dd 5578 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
c4a3e0a5 5579 dcmd->timeout = 0;
780a3762 5580 dcmd->pad_0 = 0;
c4a3e0a5 5581 dcmd->data_xfer_len = 0;
94cd65dd 5582 dcmd->opcode = cpu_to_le32(opcode);
c4a3e0a5 5583
cfbe7554
SS		 5584 if (megasas_issue_blocked_cmd(instance, cmd, 30))
5585 dev_err(&instance->pdev->dev, "Command timedout"
5586 "from %s\n", __func__);
c4a3e0a5 5587
90dc9d98
SS		 5588 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
5589 megasas_return_mfi_mpt_pthr(instance, cmd,
5590 cmd->mpt_pthr_cmd_blocked);
5591 else
5592 megasas_return_cmd(instance, cmd);
c4a3e0a5
BS		 5593
5594 return;
5595}
5596
33139b21 5597#ifdef CONFIG_PM
31ea7088 5598/**
ad84db2e 5599 * megasas_suspend - driver suspend entry point
5600 * @pdev: PCI device structure
31ea7088 5601 * @state: PCI power state to suspend routine
5602 */
33139b21 5603static int
31ea7088 5604megasas_suspend(struct pci_dev *pdev, pm_message_t state)
5605{
5606 struct Scsi_Host *host;
5607 struct megasas_instance *instance;
5608
5609 instance = pci_get_drvdata(pdev);
5610 host = instance->host;
0c79e681 5611 instance->unload = 1;
31ea7088 5612
229fe47c
AR		 5613 /* Shutdown SR-IOV heartbeat timer */
5614 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
5615 del_timer_sync(&instance->sriov_heartbeat_timer);
5616
31ea7088 5617 megasas_flush_cache(instance);
5618 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
7e8a75f4
YB		 5619
5620 /* cancel the delayed work if this work still in queue */
5621 if (instance->ev != NULL) {
5622 struct megasas_aen_event *ev = instance->ev;
c1d390d8 5623 cancel_delayed_work_sync(&ev->hotplug_work);
7e8a75f4
YB		 5624 instance->ev = NULL;
5625 }
5626
31ea7088 5627 tasklet_kill(&instance->isr_tasklet);
5628
5629 pci_set_drvdata(instance->pdev, instance);
d46a3ad6 5630 instance->instancet->disable_intr(instance);
c8e858fe 5631
d3557fc8
SS		 5632 megasas_destroy_irqs(instance);
5633
c8e858fe 5634 if (instance->msix_vectors)
80d9da98 5635 pci_disable_msix(instance->pdev);
31ea7088 5636
5637 pci_save_state(pdev);
5638 pci_disable_device(pdev);
5639
5640 pci_set_power_state(pdev, pci_choose_state(pdev, state));
5641
5642 return 0;
5643}
5644
5645/**
5646 * megasas_resume- driver resume entry point
5647 * @pdev: PCI device structure
5648 */
33139b21 5649static int
31ea7088 5650megasas_resume(struct pci_dev *pdev)
5651{
d3557fc8 5652 int rval;
31ea7088 5653 struct Scsi_Host *host;
5654 struct megasas_instance *instance;
5655
5656 instance = pci_get_drvdata(pdev);
5657 host = instance->host;
5658 pci_set_power_state(pdev, PCI_D0);
5659 pci_enable_wake(pdev, PCI_D0, 0);
5660 pci_restore_state(pdev);
5661
5662 /*
5663 * PCI prepping: enable device set bus mastering and dma mask
5664 */
aeab3fd7 5665 rval = pci_enable_device_mem(pdev);
31ea7088 5666
5667 if (rval) {
5668 printk(KERN_ERR "megasas: Enable device failed\n");
5669 return rval;
5670 }
5671
5672 pci_set_master(pdev);
5673
5674 if (megasas_set_dma_mask(pdev))
5675 goto fail_set_dma_mask;
5676
5677 /*
5678 * Initialize MFI Firmware
5679 */
5680
31ea7088 5681 atomic_set(&instance->fw_outstanding, 0);
5682
5683 /*
5684 * We expect the FW state to be READY
5685 */
058a8fac 5686 if (megasas_transition_to_ready(instance, 0))
31ea7088 5687 goto fail_ready_state;
5688
3f1abce4 5689 /* Now re-enable MSI-X */
dd088128 5690 if (instance->msix_vectors &&
8ae80ed1
AG		 5691 pci_enable_msix_exact(instance->pdev, instance->msixentry,
5692 instance->msix_vectors))
dd088128 5693 goto fail_reenable_msix;
3f1abce4 5694
9c915a8c
AR		 5695 switch (instance->pdev->device) {
5696 case PCI_DEVICE_ID_LSI_FUSION:
229fe47c 5697 case PCI_DEVICE_ID_LSI_PLASMA:
36807e67 5698 case PCI_DEVICE_ID_LSI_INVADER:
21d3c710 5699 case PCI_DEVICE_ID_LSI_FURY:
9c915a8c
AR		 5700 {
5701 megasas_reset_reply_desc(instance);
5702 if (megasas_ioc_init_fusion(instance)) {
5703 megasas_free_cmds(instance);
5704 megasas_free_cmds_fusion(instance);
5705 goto fail_init_mfi;
5706 }
5707 if (!megasas_get_map_info(instance))
5708 megasas_sync_map_info(instance);
5709 }
5710 break;
5711 default:
5712 *instance->producer = 0;
5713 *instance->consumer = 0;
5714 if (megasas_issue_init_mfi(instance))
5715 goto fail_init_mfi;
5716 break;
5717 }
31ea7088 5718
9c915a8c
AR		 5719 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
5720 (unsigned long)instance);
31ea7088 5721
d3557fc8
SS		 5722 if (instance->msix_vectors ?
5723 megasas_setup_irqs_msix(instance, 0) :
5724 megasas_setup_irqs_ioapic(instance))
5725 goto fail_init_mfi;
31ea7088 5726
229fe47c
AR		 5727 /* Re-launch SR-IOV heartbeat timer */
5728 if (instance->requestorId) {
5729 if (!megasas_sriov_start_heartbeat(instance, 0))
5730 megasas_start_timer(instance,
5731 &instance->sriov_heartbeat_timer,
5732 megasas_sriov_heartbeat_handler,
5733 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
5734 else
5735 instance->skip_heartbeat_timer_del = 1;
5736 }
5737
d46a3ad6 5738 instance->instancet->enable_intr(instance);
0c79e681
YB		 5739 instance->unload = 0;
5740
541f90b7
AR		 5741 /*
5742 * Initiate AEN (Asynchronous Event Notification)
5743 */
5744 if (megasas_start_aen(instance))
5745 printk(KERN_ERR "megasas: Start AEN failed\n");
5746
31ea7088 5747 return 0;
5748
31ea7088 5749fail_init_mfi:
5750 if (instance->evt_detail)
5751 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
5752 instance->evt_detail,
5753 instance->evt_detail_h);
5754
5755 if (instance->producer)
5756 pci_free_consistent(pdev, sizeof(u32), instance->producer,
5757 instance->producer_h);
5758 if (instance->consumer)
5759 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
5760 instance->consumer_h);
5761 scsi_host_put(host);
5762
5763fail_set_dma_mask:
5764fail_ready_state:
dd088128 5765fail_reenable_msix:
31ea7088 5766
5767 pci_disable_device(pdev);
5768
5769 return -ENODEV;
5770}
33139b21
JS		 5771#else
5772#define megasas_suspend NULL
5773#define megasas_resume NULL
5774#endif
31ea7088 5775
c4a3e0a5
BS		 5776/**
5777 * megasas_detach_one - PCI hot"un"plug entry point
5778 * @pdev: PCI device structure
5779 */
6f039790 5780static void megasas_detach_one(struct pci_dev *pdev)
c4a3e0a5
BS		 5781{
5782 int i;
5783 struct Scsi_Host *host;
5784 struct megasas_instance *instance;
9c915a8c 5785 struct fusion_context *fusion;
c4a3e0a5
BS		 5786
5787 instance = pci_get_drvdata(pdev);
c3518837 5788 instance->unload = 1;
c4a3e0a5 5789 host = instance->host;
9c915a8c 5790 fusion = instance->ctrl_context;
c4a3e0a5 5791
229fe47c
AR		 5792 /* Shutdown SR-IOV heartbeat timer */
5793 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
5794 del_timer_sync(&instance->sriov_heartbeat_timer);
5795
fc62b3fc
SS		 5796 if (instance->fw_crash_state != UNAVAILABLE)
5797 megasas_free_host_crash_buffer(instance);
c4a3e0a5
BS		 5798 scsi_remove_host(instance->host);
5799 megasas_flush_cache(instance);
31ea7088 5800 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7e8a75f4
YB		 5801
5802 /* cancel the delayed work if this work still in queue*/
5803 if (instance->ev != NULL) {
5804 struct megasas_aen_event *ev = instance->ev;
c1d390d8 5805 cancel_delayed_work_sync(&ev->hotplug_work);
7e8a75f4
YB		 5806 instance->ev = NULL;
5807 }
5808
cfbe7554
SS		 5809 /* cancel all wait events */
5810 wake_up_all(&instance->int_cmd_wait_q);
5811
5d018ad0 5812 tasklet_kill(&instance->isr_tasklet);
c4a3e0a5
BS		 5813
5814 /*
5815 * Take the instance off the instance array. Note that we will not
5816 * decrement the max_index. We let this array be sparse array
5817 */
5818 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
5819 if (megasas_mgmt_info.instance[i] == instance) {
5820 megasas_mgmt_info.count--;
5821 megasas_mgmt_info.instance[i] = NULL;
5822
5823 break;
5824 }
5825 }
5826
d46a3ad6 5827 instance->instancet->disable_intr(instance);
c4a3e0a5 5828
d3557fc8
SS		 5829 megasas_destroy_irqs(instance);
5830
c8e858fe 5831 if (instance->msix_vectors)
80d9da98 5832 pci_disable_msix(instance->pdev);
c4a3e0a5 5833
9c915a8c
AR		 5834 switch (instance->pdev->device) {
5835 case PCI_DEVICE_ID_LSI_FUSION:
229fe47c 5836 case PCI_DEVICE_ID_LSI_PLASMA:
36807e67 5837 case PCI_DEVICE_ID_LSI_INVADER:
21d3c710 5838 case PCI_DEVICE_ID_LSI_FURY:
9c915a8c 5839 megasas_release_fusion(instance);
51087a86 5840 for (i = 0; i < 2 ; i++) {
9c915a8c
AR		 5841 if (fusion->ld_map[i])
5842 dma_free_coherent(&instance->pdev->dev,
51087a86 5843 fusion->max_map_sz,
9c915a8c 5844 fusion->ld_map[i],
51087a86
SS		 5845 fusion->ld_map_phys[i]);
5846 if (fusion->ld_drv_map[i])
5847 free_pages((ulong)fusion->ld_drv_map[i],
5848 fusion->drv_map_pages);
5849 }
5850 free_pages((ulong)instance->ctrl_context,
5851 instance->ctrl_context_pages);
9c915a8c
AR		 5852 break;
5853 default:
5854 megasas_release_mfi(instance);
9c915a8c
AR		 5855 pci_free_consistent(pdev, sizeof(u32),
5856 instance->producer,
5857 instance->producer_h);
5858 pci_free_consistent(pdev, sizeof(u32),
5859 instance->consumer,
5860 instance->consumer_h);
5861 break;
5862 }
c4a3e0a5 5863
51087a86
SS		 5864 kfree(instance->ctrl_info);
5865
105900d5
SS		 5866 if (instance->evt_detail)
5867 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
5868 instance->evt_detail, instance->evt_detail_h);
229fe47c
AR		 5869
5870 if (instance->vf_affiliation)
5871 pci_free_consistent(pdev, (MAX_LOGICAL_DRIVES + 1) *
5872 sizeof(struct MR_LD_VF_AFFILIATION),
5873 instance->vf_affiliation,
5874 instance->vf_affiliation_h);
5875
5876 if (instance->vf_affiliation_111)
5877 pci_free_consistent(pdev,
5878 sizeof(struct MR_LD_VF_AFFILIATION_111),
5879 instance->vf_affiliation_111,
5880 instance->vf_affiliation_111_h);
5881
5882 if (instance->hb_host_mem)
5883 pci_free_consistent(pdev, sizeof(struct MR_CTRL_HB_HOST_MEM),
5884 instance->hb_host_mem,
5885 instance->hb_host_mem_h);
5886
fc62b3fc
SS		 5887 if (instance->crash_dump_buf)
5888 pci_free_consistent(pdev, CRASH_DMA_BUF_SIZE,
5889 instance->crash_dump_buf, instance->crash_dump_h);
5890
c4a3e0a5
BS		 5891 scsi_host_put(host);
5892
c4a3e0a5
BS		 5893 pci_disable_device(pdev);
5894
5895 return;
5896}
5897
5898/**
5899 * megasas_shutdown - Shutdown entry point
5900 * @device: Generic device structure
5901 */
5902static void megasas_shutdown(struct pci_dev *pdev)
5903{
5904 struct megasas_instance *instance = pci_get_drvdata(pdev);
c8e858fe 5905
0c79e681 5906 instance->unload = 1;
c4a3e0a5 5907 megasas_flush_cache(instance);
530e6fc1 5908 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
d46a3ad6 5909 instance->instancet->disable_intr(instance);
d3557fc8
SS		 5910 megasas_destroy_irqs(instance);
5911
c8e858fe 5912 if (instance->msix_vectors)
46fd256e 5913 pci_disable_msix(instance->pdev);
c4a3e0a5
BS		 5914}
5915
5916/**
5917 * megasas_mgmt_open - char node "open" entry point
5918 */
5919static int megasas_mgmt_open(struct inode *inode, struct file *filep)
5920{
5921 /*
5922 * Allow only those users with admin rights
5923 */
5924 if (!capable(CAP_SYS_ADMIN))
5925 return -EACCES;
5926
5927 return 0;
5928}
5929
c4a3e0a5
BS		 5930/**
5931 * megasas_mgmt_fasync - Async notifier registration from applications
5932 *
5933 * This function adds the calling process to a driver global queue. When an
5934 * event occurs, SIGIO will be sent to all processes in this queue.
5935 */
5936static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
5937{
5938 int rc;
5939
0b950672 5940 mutex_lock(&megasas_async_queue_mutex);
c4a3e0a5
BS		 5941
5942 rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
5943
0b950672 5944 mutex_unlock(&megasas_async_queue_mutex);
c4a3e0a5
BS		 5945
5946 if (rc >= 0) {
5947 /* For sanity check when we get ioctl */
5948 filep->private_data = filep;
5949 return 0;
5950 }
5951
5952 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
5953
5954 return rc;
5955}
5956
c3518837
YB		 5957/**
5958 * megasas_mgmt_poll - char node "poll" entry point
5959 * */
5960static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait)
5961{
5962 unsigned int mask;
5963 unsigned long flags;
5964 poll_wait(file, &megasas_poll_wait, wait);
5965 spin_lock_irqsave(&poll_aen_lock, flags);
5966 if (megasas_poll_wait_aen)
5967 mask = (POLLIN | POLLRDNORM);
51087a86 5968
c3518837
YB		 5969 else
5970 mask = 0;
51087a86 5971 megasas_poll_wait_aen = 0;
c3518837
YB		 5972 spin_unlock_irqrestore(&poll_aen_lock, flags);
5973 return mask;
5974}
5975
fc62b3fc
SS		 5976/*
5977 * megasas_set_crash_dump_params_ioctl:
5978 * Send CRASH_DUMP_MODE DCMD to all controllers
5979 * @cmd: MFI command frame
5980 */
5981
5982static int megasas_set_crash_dump_params_ioctl(
5983 struct megasas_cmd *cmd)
5984{
5985 struct megasas_instance *local_instance;
5986 int i, error = 0;
5987 int crash_support;
5988
5989 crash_support = cmd->frame->dcmd.mbox.w[0];
5990
5991 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
5992 local_instance = megasas_mgmt_info.instance[i];
5993 if (local_instance && local_instance->crash_dump_drv_support) {
5994 if ((local_instance->adprecovery ==
5995 MEGASAS_HBA_OPERATIONAL) &&
5996 !megasas_set_crash_dump_params(local_instance,
5997 crash_support)) {
5998 local_instance->crash_dump_app_support =
5999 crash_support;
6000 dev_info(&local_instance->pdev->dev,
6001 "Application firmware crash "
6002 "dump mode set success\n");
6003 error = 0;
6004 } else {
6005 dev_info(&local_instance->pdev->dev,
6006 "Application firmware crash "
6007 "dump mode set failed\n");
6008 error = -1;
6009 }
6010 }
6011 }
6012 return error;
6013}
6014
c4a3e0a5
BS		 6015/**
6016 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
6017 * @instance: Adapter soft state
6018 * @argp: User's ioctl packet
6019 */
6020static int
6021megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
6022 struct megasas_iocpacket __user * user_ioc,
6023 struct megasas_iocpacket *ioc)
6024{
6025 struct megasas_sge32 *kern_sge32;
6026 struct megasas_cmd *cmd;
6027 void *kbuff_arr[MAX_IOCTL_SGE];
6028 dma_addr_t buf_handle = 0;
6029 int error = 0, i;
6030 void *sense = NULL;
6031 dma_addr_t sense_handle;
7b2519af 6032 unsigned long *sense_ptr;
c4a3e0a5
BS		 6033
6034 memset(kbuff_arr, 0, sizeof(kbuff_arr));
6035
6036 if (ioc->sge_count > MAX_IOCTL_SGE) {
6037 printk(KERN_DEBUG "megasas: SGE count [%d] > max limit [%d]\n",
6038 ioc->sge_count, MAX_IOCTL_SGE);
6039 return -EINVAL;
6040 }
6041
6042 cmd = megasas_get_cmd(instance);
6043 if (!cmd) {
6044 printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n");
6045 return -ENOMEM;
6046 }
6047
6048 /*
6049 * User's IOCTL packet has 2 frames (maximum). Copy those two
6050 * frames into our cmd's frames. cmd->frame's context will get
6051 * overwritten when we copy from user's frames. So set that value
6052 * alone separately
6053 */
6054 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
94cd65dd 6055 cmd->frame->hdr.context = cpu_to_le32(cmd->index);
c3518837 6056 cmd->frame->hdr.pad_0 = 0;
94cd65dd
SS		 6057 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_IEEE |
6058 MFI_FRAME_SGL64 |
6059 MFI_FRAME_SENSE64));
c4a3e0a5 6060
fc62b3fc
SS		 6061 if (cmd->frame->dcmd.opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) {
6062 error = megasas_set_crash_dump_params_ioctl(cmd);
6063 megasas_return_cmd(instance, cmd);
6064 return error;
6065 }
6066
c4a3e0a5
BS		 6067 /*
6068 * The management interface between applications and the fw uses
6069 * MFI frames. E.g, RAID configuration changes, LD property changes
6070 * etc are accomplishes through different kinds of MFI frames. The
6071 * driver needs to care only about substituting user buffers with
6072 * kernel buffers in SGLs. The location of SGL is embedded in the
6073 * struct iocpacket itself.
6074 */
6075 kern_sge32 = (struct megasas_sge32 *)
6076 ((unsigned long)cmd->frame + ioc->sgl_off);
6077
6078 /*
6079 * For each user buffer, create a mirror buffer and copy in
6080 */
6081 for (i = 0; i < ioc->sge_count; i++) {
98cb7e44
BM		 6082 if (!ioc->sgl[i].iov_len)
6083 continue;
6084
9f35fa8a 6085 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
c4a3e0a5 6086 ioc->sgl[i].iov_len,
9f35fa8a 6087 &buf_handle, GFP_KERNEL);
c4a3e0a5
BS		 6088 if (!kbuff_arr[i]) {
6089 printk(KERN_DEBUG "megasas: Failed to alloc "
6090 "kernel SGL buffer for IOCTL \n");
6091 error = -ENOMEM;
6092 goto out;
6093 }
6094
6095 /*
6096 * We don't change the dma_coherent_mask, so
6097 * pci_alloc_consistent only returns 32bit addresses
6098 */
94cd65dd
SS		 6099 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
6100 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
c4a3e0a5
BS		 6101
6102 /*
6103 * We created a kernel buffer corresponding to the
6104 * user buffer. Now copy in from the user buffer
6105 */
6106 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
6107 (u32) (ioc->sgl[i].iov_len))) {
6108 error = -EFAULT;
6109 goto out;
6110 }
6111 }
6112
6113 if (ioc->sense_len) {
9f35fa8a
SP		 6114 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
6115 &sense_handle, GFP_KERNEL);
c4a3e0a5
BS		 6116 if (!sense) {
6117 error = -ENOMEM;
6118 goto out;
6119 }
6120
6121 sense_ptr =
7b2519af 6122 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
94cd65dd 6123 *sense_ptr = cpu_to_le32(sense_handle);
c4a3e0a5
BS		 6124 }
6125
6126 /*
6127 * Set the sync_cmd flag so that the ISR knows not to complete this
6128 * cmd to the SCSI mid-layer
6129 */
6130 cmd->sync_cmd = 1;
cfbe7554 6131 megasas_issue_blocked_cmd(instance, cmd, 0);
c4a3e0a5
BS		 6132 cmd->sync_cmd = 0;
6133
aa00832b
SS		 6134 if (instance->unload == 1) {
6135 dev_info(&instance->pdev->dev, "Driver unload is in progress "
6136 "don't submit data to application\n");
6137 goto out;
6138 }
c4a3e0a5
BS		 6139 /*
6140 * copy out the kernel buffers to user buffers
6141 */
6142 for (i = 0; i < ioc->sge_count; i++) {
6143 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
6144 ioc->sgl[i].iov_len)) {
6145 error = -EFAULT;
6146 goto out;
6147 }
6148 }
6149
6150 /*
6151 * copy out the sense
6152 */
6153 if (ioc->sense_len) {
6154 /*
b70a41e0 6155 * sense_ptr points to the location that has the user
c4a3e0a5
BS		 6156 * sense buffer address
6157 */
7b2519af
YB		 6158 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
6159 ioc->sense_off);
c4a3e0a5 6160
b70a41e0 6161 if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)),
6162 sense, ioc->sense_len)) {
b10c36a5 6163 printk(KERN_ERR "megasas: Failed to copy out to user "
6164 "sense data\n");
c4a3e0a5
BS		 6165 error = -EFAULT;
6166 goto out;
6167 }
6168 }
6169
6170 /*
6171 * copy the status codes returned by the fw
6172 */
6173 if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
6174 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
6175 printk(KERN_DEBUG "megasas: Error copying out cmd_status\n");
6176 error = -EFAULT;
6177 }
6178
6179 out:
6180 if (sense) {
9f35fa8a 6181 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
c4a3e0a5
BS		 6182 sense, sense_handle);
6183 }
6184
7a6a731b
BM		 6185 for (i = 0; i < ioc->sge_count; i++) {
6186 if (kbuff_arr[i])
6187 dma_free_coherent(&instance->pdev->dev,
94cd65dd 6188 le32_to_cpu(kern_sge32[i].length),
7a6a731b 6189 kbuff_arr[i],
94cd65dd 6190 le32_to_cpu(kern_sge32[i].phys_addr));
90dc9d98 6191 kbuff_arr[i] = NULL;
c4a3e0a5
BS		 6192 }
6193
90dc9d98
SS		 6194 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
6195 megasas_return_mfi_mpt_pthr(instance, cmd,
6196 cmd->mpt_pthr_cmd_blocked);
6197 else
6198 megasas_return_cmd(instance, cmd);
c4a3e0a5
BS		 6199 return error;
6200}
6201
c4a3e0a5
BS		 6202static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
6203{
6204 struct megasas_iocpacket __user *user_ioc =
6205 (struct megasas_iocpacket __user *)arg;
6206 struct megasas_iocpacket *ioc;
6207 struct megasas_instance *instance;
6208 int error;
39a98554 6209 int i;
6210 unsigned long flags;
6211 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 6212
6213 ioc = kmalloc(sizeof(*ioc), GFP_KERNEL);
6214 if (!ioc)
6215 return -ENOMEM;
6216
6217 if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) {
6218 error = -EFAULT;
6219 goto out_kfree_ioc;
6220 }
6221
6222 instance = megasas_lookup_instance(ioc->host_no);
6223 if (!instance) {
6224 error = -ENODEV;
6225 goto out_kfree_ioc;
6226 }
6227
229fe47c
AR		 6228 /* Adjust ioctl wait time for VF mode */
6229 if (instance->requestorId)
6230 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF;
6231
6232 /* Block ioctls in VF mode */
6233 if (instance->requestorId && !allow_vf_ioctls) {
6234 error = -ENODEV;
6235 goto out_kfree_ioc;
6236 }
6237
39a98554 6238 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
6239 printk(KERN_ERR "Controller in crit error\n");
0c79e681
YB		 6240 error = -ENODEV;
6241 goto out_kfree_ioc;
6242 }
6243
6244 if (instance->unload == 1) {
6245 error = -ENODEV;
6246 goto out_kfree_ioc;
6247 }
6248
c4a3e0a5
BS		 6249 if (down_interruptible(&instance->ioctl_sem)) {
6250 error = -ERESTARTSYS;
6251 goto out_kfree_ioc;
6252 }
39a98554 6253
6254 for (i = 0; i < wait_time; i++) {
6255
6256 spin_lock_irqsave(&instance->hba_lock, flags);
6257 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
6258 spin_unlock_irqrestore(&instance->hba_lock, flags);
6259 break;
6260 }
6261 spin_unlock_irqrestore(&instance->hba_lock, flags);
6262
6263 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
6264 printk(KERN_NOTICE "megasas: waiting"
6265 "for controller reset to finish\n");
6266 }
6267
6268 msleep(1000);
6269 }
6270
6271 spin_lock_irqsave(&instance->hba_lock, flags);
6272 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
6273 spin_unlock_irqrestore(&instance->hba_lock, flags);
6274
6275 printk(KERN_ERR "megaraid_sas: timed out while"
6276 "waiting for HBA to recover\n");
6277 error = -ENODEV;
c64e483e 6278 goto out_up;
39a98554 6279 }
6280 spin_unlock_irqrestore(&instance->hba_lock, flags);
6281
c4a3e0a5 6282 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
c64e483e 6283 out_up:
c4a3e0a5
BS		 6284 up(&instance->ioctl_sem);
6285
6286 out_kfree_ioc:
6287 kfree(ioc);
6288 return error;
6289}
6290
6291static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
6292{
6293 struct megasas_instance *instance;
6294 struct megasas_aen aen;
6295 int error;
39a98554 6296 int i;
6297 unsigned long flags;
6298 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 6299
6300 if (file->private_data != file) {
6301 printk(KERN_DEBUG "megasas: fasync_helper was not "
6302 "called first\n");
6303 return -EINVAL;
6304 }
6305
6306 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
6307 return -EFAULT;
6308
6309 instance = megasas_lookup_instance(aen.host_no);
6310
6311 if (!instance)
6312 return -ENODEV;
6313
39a98554 6314 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
6315 return -ENODEV;
0c79e681
YB		 6316 }
6317
6318 if (instance->unload == 1) {
6319 return -ENODEV;
6320 }
6321
39a98554 6322 for (i = 0; i < wait_time; i++) {
6323
6324 spin_lock_irqsave(&instance->hba_lock, flags);
6325 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
6326 spin_unlock_irqrestore(&instance->hba_lock,
6327 flags);
6328 break;
6329 }
6330
6331 spin_unlock_irqrestore(&instance->hba_lock, flags);
6332
6333 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
6334 printk(KERN_NOTICE "megasas: waiting for"
6335 "controller reset to finish\n");
6336 }
6337
6338 msleep(1000);
6339 }
6340
6341 spin_lock_irqsave(&instance->hba_lock, flags);
6342 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
6343 spin_unlock_irqrestore(&instance->hba_lock, flags);
6344 printk(KERN_ERR "megaraid_sas: timed out while waiting"
6345 "for HBA to recover.\n");
6346 return -ENODEV;
6347 }
6348 spin_unlock_irqrestore(&instance->hba_lock, flags);
6349
e5a69e27 6350 mutex_lock(&instance->aen_mutex);
c4a3e0a5
BS		 6351 error = megasas_register_aen(instance, aen.seq_num,
6352 aen.class_locale_word);
e5a69e27 6353 mutex_unlock(&instance->aen_mutex);
c4a3e0a5
BS		 6354 return error;
6355}
6356
6357/**
6358 * megasas_mgmt_ioctl - char node ioctl entry point
6359 */
6360static long
6361megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
6362{
6363 switch (cmd) {
6364 case MEGASAS_IOC_FIRMWARE:
6365 return megasas_mgmt_ioctl_fw(file, arg);
6366
6367 case MEGASAS_IOC_GET_AEN:
6368 return megasas_mgmt_ioctl_aen(file, arg);
6369 }
6370
6371 return -ENOTTY;
6372}
6373
6374#ifdef CONFIG_COMPAT
6375static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
6376{
6377 struct compat_megasas_iocpacket __user *cioc =
6378 (struct compat_megasas_iocpacket __user *)arg;
6379 struct megasas_iocpacket __user *ioc =
6380 compat_alloc_user_space(sizeof(struct megasas_iocpacket));
6381 int i;
6382 int error = 0;
b3dc1a21 6383 compat_uptr_t ptr;
c4a3e0a5 6384
83aabc1b
JG		 6385 if (clear_user(ioc, sizeof(*ioc)))
6386 return -EFAULT;
c4a3e0a5
BS		 6387
6388 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
6389 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
6390 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
6391 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
6392 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
6393 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
6394 return -EFAULT;
6395
b3dc1a21
TH		 6396 /*
6397 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
6398 * sense_len is not null, so prepare the 64bit value under
6399 * the same condition.
6400 */
6401 if (ioc->sense_len) {
6402 void __user **sense_ioc_ptr =
6403 (void __user **)(ioc->frame.raw + ioc->sense_off);
6404 compat_uptr_t *sense_cioc_ptr =
6405 (compat_uptr_t *)(cioc->frame.raw + cioc->sense_off);
6406 if (get_user(ptr, sense_cioc_ptr) ||
6407 put_user(compat_ptr(ptr), sense_ioc_ptr))
6408 return -EFAULT;
6409 }
c4a3e0a5 6410
b3dc1a21 6411 for (i = 0; i < MAX_IOCTL_SGE; i++) {
c4a3e0a5
BS		 6412 if (get_user(ptr, &cioc->sgl[i].iov_base) ||
6413 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
6414 copy_in_user(&ioc->sgl[i].iov_len,
6415 &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
6416 return -EFAULT;
6417 }
6418
6419 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);
6420
6421 if (copy_in_user(&cioc->frame.hdr.cmd_status,
6422 &ioc->frame.hdr.cmd_status, sizeof(u8))) {
6423 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
6424 return -EFAULT;
6425 }
6426 return error;
6427}
6428
6429static long
6430megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
6431 unsigned long arg)
6432{
6433 switch (cmd) {
cb59aa6a
SP		 6434 case MEGASAS_IOC_FIRMWARE32:
6435 return megasas_mgmt_compat_ioctl_fw(file, arg);
c4a3e0a5
BS		 6436 case MEGASAS_IOC_GET_AEN:
6437 return megasas_mgmt_ioctl_aen(file, arg);
6438 }
6439
6440 return -ENOTTY;
6441}
6442#endif
6443
6444/*
6445 * File operations structure for management interface
6446 */
00977a59 6447static const struct file_operations megasas_mgmt_fops = {
c4a3e0a5
BS		 6448 .owner = THIS_MODULE,
6449 .open = megasas_mgmt_open,
c4a3e0a5
BS		 6450 .fasync = megasas_mgmt_fasync,
6451 .unlocked_ioctl = megasas_mgmt_ioctl,
c3518837 6452 .poll = megasas_mgmt_poll,
c4a3e0a5
BS		 6453#ifdef CONFIG_COMPAT
6454 .compat_ioctl = megasas_mgmt_compat_ioctl,
6455#endif
6038f373 6456 .llseek = noop_llseek,
c4a3e0a5
BS		 6457};
6458
6459/*
6460 * PCI hotplug support registration structure
6461 */
6462static struct pci_driver megasas_pci_driver = {
6463
6464 .name = "megaraid_sas",
6465 .id_table = megasas_pci_table,
6466 .probe = megasas_probe_one,
6f039790 6467 .remove = megasas_detach_one,
31ea7088 6468 .suspend = megasas_suspend,
6469 .resume = megasas_resume,
c4a3e0a5
BS		 6470 .shutdown = megasas_shutdown,
6471};
6472
6473/*
6474 * Sysfs driver attributes
6475 */
6476static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf)
6477{
6478 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
6479 MEGASAS_VERSION);
6480}
6481
6482static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL);
6483
72c4fd36
YB		 6484static ssize_t
6485megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf)
6486{
6487 return sprintf(buf, "%u\n", support_poll_for_event);
6488}
6489
6490static DRIVER_ATTR(support_poll_for_event, S_IRUGO,
6491 megasas_sysfs_show_support_poll_for_event, NULL);
6492
837f5fe8
YB		 6493 static ssize_t
6494megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf)
6495{
6496 return sprintf(buf, "%u\n", support_device_change);
6497}
6498
6499static DRIVER_ATTR(support_device_change, S_IRUGO,
6500 megasas_sysfs_show_support_device_change, NULL);
6501
658dcedb
SP		 6502static ssize_t
6503megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf)
6504{
ad84db2e 6505 return sprintf(buf, "%u\n", megasas_dbg_lvl);
658dcedb
SP		 6506}
6507
6508static ssize_t
6509megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count)
6510{
6511 int retval = count;
6512 if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){
6513 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
6514 retval = -EINVAL;
6515 }
6516 return retval;
6517}
6518
66dca9b8 6519static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl,
ad84db2e 6520 megasas_sysfs_set_dbg_lvl);
6521
7e8a75f4
YB		 6522static void
6523megasas_aen_polling(struct work_struct *work)
6524{
6525 struct megasas_aen_event *ev =
c1d390d8 6526 container_of(work, struct megasas_aen_event, hotplug_work.work);
7e8a75f4
YB		 6527 struct megasas_instance *instance = ev->instance;
6528 union megasas_evt_class_locale class_locale;
6529 struct Scsi_Host *host;
6530 struct scsi_device *sdev1;
6531 u16 pd_index = 0;
c9786842 6532 u16 ld_index = 0;
7e8a75f4 6533 int i, j, doscan = 0;
229fe47c 6534 u32 seq_num, wait_time = MEGASAS_RESET_WAIT_TIME;
7e8a75f4
YB		 6535 int error;
6536
6537 if (!instance) {
6538 printk(KERN_ERR "invalid instance!\n");
6539 kfree(ev);
6540 return;
6541 }
229fe47c
AR		 6542
6543 /* Adjust event workqueue thread wait time for VF mode */
6544 if (instance->requestorId)
6545 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF;
6546
6547 /* Don't run the event workqueue thread if OCR is running */
6548 for (i = 0; i < wait_time; i++) {
6549 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL)
6550 break;
6551 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
6552 printk(KERN_NOTICE "megasas: %s waiting for "
6553 "controller reset to finish for scsi%d\n",
6554 __func__, instance->host->host_no);
6555 }
6556 msleep(1000);
6557 }
6558
7e8a75f4
YB		 6559 instance->ev = NULL;
6560 host = instance->host;
6561 if (instance->evt_detail) {
6562
94cd65dd 6563 switch (le32_to_cpu(instance->evt_detail->code)) {
7e8a75f4 6564 case MR_EVT_PD_INSERTED:
c9786842
YB		 6565 if (megasas_get_pd_list(instance) == 0) {
6566 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
6567 for (j = 0;
6568 j < MEGASAS_MAX_DEV_PER_CHANNEL;
6569 j++) {
6570
6571 pd_index =
6572 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6573
6574 sdev1 =
6575 scsi_device_lookup(host, i, j, 0);
6576
6577 if (instance->pd_list[pd_index].driveState
6578 == MR_PD_STATE_SYSTEM) {
6579 if (!sdev1) {
6580 scsi_add_device(host, i, j, 0);
6581 }
6582
6583 if (sdev1)
6584 scsi_device_put(sdev1);
6585 }
6586 }
6587 }
6588 }
6589 doscan = 0;
6590 break;
6591
7e8a75f4 6592 case MR_EVT_PD_REMOVED:
c9786842 6593 if (megasas_get_pd_list(instance) == 0) {
c9786842
YB		 6594 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
6595 for (j = 0;
6596 j < MEGASAS_MAX_DEV_PER_CHANNEL;
6597 j++) {
6598
6599 pd_index =
6600 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6601
6602 sdev1 =
6603 scsi_device_lookup(host, i, j, 0);
6604
6605 if (instance->pd_list[pd_index].driveState
6606 == MR_PD_STATE_SYSTEM) {
6607 if (sdev1) {
6608 scsi_device_put(sdev1);
6609 }
6610 } else {
6611 if (sdev1) {
6612 scsi_remove_device(sdev1);
6613 scsi_device_put(sdev1);
6614 }
6615 }
6616 }
6617 }
6618 }
6619 doscan = 0;
6620 break;
6621
6622 case MR_EVT_LD_OFFLINE:
4c598b23 6623 case MR_EVT_CFG_CLEARED:
c9786842 6624 case MR_EVT_LD_DELETED:
229fe47c
AR		 6625 if (!instance->requestorId ||
6626 (instance->requestorId &&
6627 megasas_get_ld_vf_affiliation(instance, 0))) {
6628 if (megasas_ld_list_query(instance,
6629 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
6630 megasas_get_ld_list(instance);
6631 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
6632 for (j = 0;
6633 j < MEGASAS_MAX_DEV_PER_CHANNEL;
6634 j++) {
6635
6636 ld_index =
6637 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6638
6639 sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6640
6641 if (instance->ld_ids[ld_index]
6642 != 0xff) {
6643 if (sdev1)
6644 scsi_device_put(sdev1);
6645 } else {
6646 if (sdev1) {
6647 scsi_remove_device(sdev1);
6648 scsi_device_put(sdev1);
6649 }
6650 }
c9786842
YB		 6651 }
6652 }
229fe47c 6653 doscan = 0;
c9786842 6654 }
c9786842
YB		 6655 break;
6656 case MR_EVT_LD_CREATED:
229fe47c
AR		 6657 if (!instance->requestorId ||
6658 (instance->requestorId &&
6659 megasas_get_ld_vf_affiliation(instance, 0))) {
6660 if (megasas_ld_list_query(instance,
6661 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
6662 megasas_get_ld_list(instance);
6663 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
6664 for (j = 0;
6665 j < MEGASAS_MAX_DEV_PER_CHANNEL;
6666 j++) {
6667 ld_index =
6668 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6669
6670 sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6671
6672 if (instance->ld_ids[ld_index]
6673 != 0xff) {
6674 if (!sdev1)
6675 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
c9786842 6676 }
229fe47c
AR		 6677 if (sdev1)
6678 scsi_device_put(sdev1);
c9786842
YB		 6679 }
6680 }
229fe47c 6681 doscan = 0;
c9786842 6682 }
c9786842 6683 break;
7e8a75f4 6684 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
c9786842 6685 case MR_EVT_FOREIGN_CFG_IMPORTED:
9c915a8c 6686 case MR_EVT_LD_STATE_CHANGE:
7e8a75f4
YB		 6687 doscan = 1;
6688 break;
6689 default:
6690 doscan = 0;
6691 break;
6692 }
6693 } else {
6694 printk(KERN_ERR "invalid evt_detail!\n");
6695 kfree(ev);
6696 return;
6697 }
6698
6699 if (doscan) {
229fe47c
AR		 6700 printk(KERN_INFO "megaraid_sas: scanning for scsi%d...\n",
6701 instance->host->host_no);
58968fc8
HR		 6702 if (megasas_get_pd_list(instance) == 0) {
6703 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
6704 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
6705 pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j;
6706 sdev1 = scsi_device_lookup(host, i, j, 0);
6707 if (instance->pd_list[pd_index].driveState ==
6708 MR_PD_STATE_SYSTEM) {
6709 if (!sdev1) {
6710 scsi_add_device(host, i, j, 0);
6711 }
6712 if (sdev1)
6713 scsi_device_put(sdev1);
6714 } else {
6715 if (sdev1) {
6716 scsi_remove_device(sdev1);
6717 scsi_device_put(sdev1);
6718 }
7e8a75f4
YB		 6719 }
6720 }
6721 }
6722 }
c9786842 6723
229fe47c
AR		 6724 if (!instance->requestorId ||
6725 (instance->requestorId &&
6726 megasas_get_ld_vf_affiliation(instance, 0))) {
6727 if (megasas_ld_list_query(instance,
6728 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
6729 megasas_get_ld_list(instance);
6730 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
6731 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL;
6732 j++) {
6733 ld_index =
6734 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
c9786842 6735
229fe47c
AR		 6736 sdev1 = scsi_device_lookup(host,
6737 MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6738 if (instance->ld_ids[ld_index]
6739 != 0xff) {
6740 if (!sdev1)
6741 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6742 else
6743 scsi_device_put(sdev1);
c9786842 6744 } else {
229fe47c
AR		 6745 if (sdev1) {
6746 scsi_remove_device(sdev1);
6747 scsi_device_put(sdev1);
6748 }
c9786842
YB		 6749 }
6750 }
6751 }
6752 }
7e8a75f4
YB		 6753 }
6754
6755 if ( instance->aen_cmd != NULL ) {
6756 kfree(ev);
6757 return ;
6758 }
6759
94cd65dd 6760 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
7e8a75f4
YB		 6761
6762 /* Register AEN with FW for latest sequence number plus 1 */
6763 class_locale.members.reserved = 0;
6764 class_locale.members.locale = MR_EVT_LOCALE_ALL;
6765 class_locale.members.class = MR_EVT_CLASS_DEBUG;
6766 mutex_lock(&instance->aen_mutex);
6767 error = megasas_register_aen(instance, seq_num,
6768 class_locale.word);
6769 mutex_unlock(&instance->aen_mutex);
6770
6771 if (error)
6772 printk(KERN_ERR "register aen failed error %x\n", error);
6773
6774 kfree(ev);
6775}
6776
c4a3e0a5
BS		 6777/**
6778 * megasas_init - Driver load entry point
6779 */
6780static int __init megasas_init(void)
6781{
6782 int rval;
6783
6784 /*
6785 * Announce driver version and other information
6786 */
d98a6deb 6787 pr_info("megasas: %s\n", MEGASAS_VERSION);
c4a3e0a5 6788
bd8d6dd4
KD		 6789 spin_lock_init(&poll_aen_lock);
6790
72c4fd36 6791 support_poll_for_event = 2;
837f5fe8 6792 support_device_change = 1;
72c4fd36 6793
c4a3e0a5
BS		 6794 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
6795
6796 /*
6797 * Register character device node
6798 */
6799 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
6800
6801 if (rval < 0) {
6802 printk(KERN_DEBUG "megasas: failed to open device node\n");
6803 return rval;
6804 }
6805
6806 megasas_mgmt_majorno = rval;
6807
6808 /*
6809 * Register ourselves as PCI hotplug module
6810 */
4041b9cd 6811 rval = pci_register_driver(&megasas_pci_driver);
c4a3e0a5
BS		 6812
6813 if (rval) {
6774def6 6814 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n");
83aabc1b
JG		 6815 goto err_pcidrv;
6816 }
6817
6818 rval = driver_create_file(&megasas_pci_driver.driver,
6819 &driver_attr_version);
6820 if (rval)
6821 goto err_dcf_attr_ver;
72c4fd36
YB		 6822
6823 rval = driver_create_file(&megasas_pci_driver.driver,
6824 &driver_attr_support_poll_for_event);
6825 if (rval)
6826 goto err_dcf_support_poll_for_event;
6827
83aabc1b
JG		 6828 rval = driver_create_file(&megasas_pci_driver.driver,
6829 &driver_attr_dbg_lvl);
6830 if (rval)
6831 goto err_dcf_dbg_lvl;
837f5fe8
YB		 6832 rval = driver_create_file(&megasas_pci_driver.driver,
6833 &driver_attr_support_device_change);
6834 if (rval)
6835 goto err_dcf_support_device_change;
6836
c4a3e0a5 6837 return rval;
ad84db2e 6838
837f5fe8 6839err_dcf_support_device_change:
ad84db2e 6840 driver_remove_file(&megasas_pci_driver.driver,
6841 &driver_attr_dbg_lvl);
83aabc1b 6842err_dcf_dbg_lvl:
72c4fd36
YB		 6843 driver_remove_file(&megasas_pci_driver.driver,
6844 &driver_attr_support_poll_for_event);
72c4fd36 6845err_dcf_support_poll_for_event:
83aabc1b
JG		 6846 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
6847err_dcf_attr_ver:
6848 pci_unregister_driver(&megasas_pci_driver);
6849err_pcidrv:
6850 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
0d49016b 6851 return rval;
c4a3e0a5
BS		 6852}
6853
6854/**
6855 * megasas_exit - Driver unload entry point
6856 */
6857static void __exit megasas_exit(void)
6858{
658dcedb
SP		 6859 driver_remove_file(&megasas_pci_driver.driver,
6860 &driver_attr_dbg_lvl);
837f5fe8
YB		 6861 driver_remove_file(&megasas_pci_driver.driver,
6862 &driver_attr_support_poll_for_event);
6863 driver_remove_file(&megasas_pci_driver.driver,
6864 &driver_attr_support_device_change);
83aabc1b 6865 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
c4a3e0a5
BS		 6866
6867 pci_unregister_driver(&megasas_pci_driver);
6868 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
6869}
6870
6871module_init(megasas_init);
6872module_exit(megasas_exit);
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