Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1 | /* |
| 2 | * |
| 3 | * Linux MegaRAID driver for SAS based RAID controllers |
| 4 | * |
| 5 | * Copyright (c) 2003-2005 LSI Logic Corporation. |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License |
| 9 | * as published by the Free Software Foundation; either version |
| 10 | * 2 of the License, or (at your option) any later version. |
| 11 | * |
| 12 | * FILE : megaraid_sas.c |
Sumant Patro | 05e9ebb | 2007-05-17 05:47:51 -0700 | [diff] [blame] | 13 | * Version : v00.00.03.10-rc5 |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 14 | * |
| 15 | * Authors: |
Sumant Patro | cc5968c | 2007-02-14 13:05:42 -0800 | [diff] [blame] | 16 | * (email-id : megaraidlinux@lsi.com) |
| 17 | * Sreenivas Bagalkote |
| 18 | * Sumant Patro |
| 19 | * Bo Yang |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 20 | * |
| 21 | * List of supported controllers |
| 22 | * |
| 23 | * OEM Product Name VID DID SSVID SSID |
| 24 | * --- ------------ --- --- ---- ---- |
| 25 | */ |
| 26 | |
| 27 | #include <linux/kernel.h> |
| 28 | #include <linux/types.h> |
| 29 | #include <linux/pci.h> |
| 30 | #include <linux/list.h> |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 31 | #include <linux/moduleparam.h> |
| 32 | #include <linux/module.h> |
| 33 | #include <linux/spinlock.h> |
| 34 | #include <linux/interrupt.h> |
| 35 | #include <linux/delay.h> |
| 36 | #include <linux/uio.h> |
| 37 | #include <asm/uaccess.h> |
Al Viro | 4339923 | 2005-10-04 17:36:04 +0100 | [diff] [blame] | 38 | #include <linux/fs.h> |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 39 | #include <linux/compat.h> |
Sumant Patro | cf62a0a | 2007-02-14 12:41:55 -0800 | [diff] [blame] | 40 | #include <linux/blkdev.h> |
Arjan van de Ven | 0b95067 | 2006-01-11 13:16:10 +0100 | [diff] [blame] | 41 | #include <linux/mutex.h> |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 42 | |
| 43 | #include <scsi/scsi.h> |
| 44 | #include <scsi/scsi_cmnd.h> |
| 45 | #include <scsi/scsi_device.h> |
| 46 | #include <scsi/scsi_host.h> |
| 47 | #include "megaraid_sas.h" |
| 48 | |
| 49 | MODULE_LICENSE("GPL"); |
| 50 | MODULE_VERSION(MEGASAS_VERSION); |
Sumant Patro | 3d6d174 | 2006-12-29 08:13:54 -0800 | [diff] [blame] | 51 | MODULE_AUTHOR("megaraidlinux@lsi.com"); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 52 | MODULE_DESCRIPTION("LSI Logic MegaRAID SAS Driver"); |
| 53 | |
| 54 | /* |
| 55 | * PCI ID table for all supported controllers |
| 56 | */ |
| 57 | static struct pci_device_id megasas_pci_table[] = { |
| 58 | |
Henrik Kretzschmar | f3d7271 | 2006-08-15 11:17:21 +0200 | [diff] [blame] | 59 | {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)}, |
| 60 | /* xscale IOP */ |
| 61 | {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)}, |
| 62 | /* ppc IOP */ |
| 63 | {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)}, |
| 64 | /* xscale IOP, vega */ |
| 65 | {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)}, |
| 66 | /* xscale IOP */ |
| 67 | {} |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 68 | }; |
| 69 | |
| 70 | MODULE_DEVICE_TABLE(pci, megasas_pci_table); |
| 71 | |
| 72 | static int megasas_mgmt_majorno; |
| 73 | static struct megasas_mgmt_info megasas_mgmt_info; |
| 74 | static struct fasync_struct *megasas_async_queue; |
Arjan van de Ven | 0b95067 | 2006-01-11 13:16:10 +0100 | [diff] [blame] | 75 | static DEFINE_MUTEX(megasas_async_queue_mutex); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 76 | |
Sumant Patro | 658dced | 2006-10-03 13:09:14 -0700 | [diff] [blame] | 77 | static u32 megasas_dbg_lvl; |
| 78 | |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 79 | /** |
| 80 | * megasas_get_cmd - Get a command from the free pool |
| 81 | * @instance: Adapter soft state |
| 82 | * |
| 83 | * Returns a free command from the pool |
| 84 | */ |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame] | 85 | static struct megasas_cmd *megasas_get_cmd(struct megasas_instance |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 86 | *instance) |
| 87 | { |
| 88 | unsigned long flags; |
| 89 | struct megasas_cmd *cmd = NULL; |
| 90 | |
| 91 | spin_lock_irqsave(&instance->cmd_pool_lock, flags); |
| 92 | |
| 93 | if (!list_empty(&instance->cmd_pool)) { |
| 94 | cmd = list_entry((&instance->cmd_pool)->next, |
| 95 | struct megasas_cmd, list); |
| 96 | list_del_init(&cmd->list); |
| 97 | } else { |
| 98 | printk(KERN_ERR "megasas: Command pool empty!\n"); |
| 99 | } |
| 100 | |
| 101 | spin_unlock_irqrestore(&instance->cmd_pool_lock, flags); |
| 102 | return cmd; |
| 103 | } |
| 104 | |
| 105 | /** |
| 106 | * megasas_return_cmd - Return a cmd to free command pool |
| 107 | * @instance: Adapter soft state |
| 108 | * @cmd: Command packet to be returned to free command pool |
| 109 | */ |
| 110 | static inline void |
| 111 | megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) |
| 112 | { |
| 113 | unsigned long flags; |
| 114 | |
| 115 | spin_lock_irqsave(&instance->cmd_pool_lock, flags); |
| 116 | |
| 117 | cmd->scmd = NULL; |
| 118 | list_add_tail(&cmd->list, &instance->cmd_pool); |
| 119 | |
| 120 | spin_unlock_irqrestore(&instance->cmd_pool_lock, flags); |
| 121 | } |
| 122 | |
Sumant Patro | 1341c93 | 2006-01-25 12:02:40 -0800 | [diff] [blame] | 123 | |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 124 | /** |
Sumant Patro | 1341c93 | 2006-01-25 12:02:40 -0800 | [diff] [blame] | 125 | * The following functions are defined for xscale |
| 126 | * (deviceid : 1064R, PERC5) controllers |
| 127 | */ |
| 128 | |
| 129 | /** |
| 130 | * megasas_enable_intr_xscale - Enables interrupts |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 131 | * @regs: MFI register set |
| 132 | */ |
| 133 | static inline void |
Sumant Patro | 1341c93 | 2006-01-25 12:02:40 -0800 | [diff] [blame] | 134 | megasas_enable_intr_xscale(struct megasas_register_set __iomem * regs) |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 135 | { |
| 136 | writel(1, &(regs)->outbound_intr_mask); |
| 137 | |
| 138 | /* Dummy readl to force pci flush */ |
| 139 | readl(®s->outbound_intr_mask); |
| 140 | } |
| 141 | |
| 142 | /** |
Sumant Patro | b274cab | 2006-10-03 12:52:12 -0700 | [diff] [blame] | 143 | * megasas_disable_intr_xscale -Disables interrupt |
| 144 | * @regs: MFI register set |
| 145 | */ |
| 146 | static inline void |
| 147 | megasas_disable_intr_xscale(struct megasas_register_set __iomem * regs) |
| 148 | { |
| 149 | u32 mask = 0x1f; |
| 150 | writel(mask, ®s->outbound_intr_mask); |
| 151 | /* Dummy readl to force pci flush */ |
| 152 | readl(®s->outbound_intr_mask); |
| 153 | } |
| 154 | |
| 155 | /** |
Sumant Patro | 1341c93 | 2006-01-25 12:02:40 -0800 | [diff] [blame] | 156 | * megasas_read_fw_status_reg_xscale - returns the current FW status value |
| 157 | * @regs: MFI register set |
| 158 | */ |
| 159 | static u32 |
| 160 | megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs) |
| 161 | { |
| 162 | return readl(&(regs)->outbound_msg_0); |
| 163 | } |
| 164 | /** |
| 165 | * megasas_clear_interrupt_xscale - Check & clear interrupt |
| 166 | * @regs: MFI register set |
| 167 | */ |
| 168 | static int |
| 169 | megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs) |
| 170 | { |
| 171 | u32 status; |
| 172 | /* |
| 173 | * Check if it is our interrupt |
| 174 | */ |
| 175 | status = readl(®s->outbound_intr_status); |
| 176 | |
| 177 | if (!(status & MFI_OB_INTR_STATUS_MASK)) { |
| 178 | return 1; |
| 179 | } |
| 180 | |
| 181 | /* |
| 182 | * Clear the interrupt by writing back the same value |
| 183 | */ |
| 184 | writel(status, ®s->outbound_intr_status); |
| 185 | |
| 186 | return 0; |
| 187 | } |
| 188 | |
| 189 | /** |
| 190 | * megasas_fire_cmd_xscale - Sends command to the FW |
| 191 | * @frame_phys_addr : Physical address of cmd |
| 192 | * @frame_count : Number of frames for the command |
| 193 | * @regs : MFI register set |
| 194 | */ |
| 195 | static inline void |
| 196 | megasas_fire_cmd_xscale(dma_addr_t frame_phys_addr,u32 frame_count, struct megasas_register_set __iomem *regs) |
| 197 | { |
| 198 | writel((frame_phys_addr >> 3)|(frame_count), |
| 199 | &(regs)->inbound_queue_port); |
| 200 | } |
| 201 | |
| 202 | static struct megasas_instance_template megasas_instance_template_xscale = { |
| 203 | |
| 204 | .fire_cmd = megasas_fire_cmd_xscale, |
| 205 | .enable_intr = megasas_enable_intr_xscale, |
Sumant Patro | b274cab | 2006-10-03 12:52:12 -0700 | [diff] [blame] | 206 | .disable_intr = megasas_disable_intr_xscale, |
Sumant Patro | 1341c93 | 2006-01-25 12:02:40 -0800 | [diff] [blame] | 207 | .clear_intr = megasas_clear_intr_xscale, |
| 208 | .read_fw_status_reg = megasas_read_fw_status_reg_xscale, |
| 209 | }; |
| 210 | |
| 211 | /** |
| 212 | * This is the end of set of functions & definitions specific |
| 213 | * to xscale (deviceid : 1064R, PERC5) controllers |
| 214 | */ |
| 215 | |
| 216 | /** |
Sumant Patro | f9876f0 | 2006-02-03 15:34:35 -0800 | [diff] [blame] | 217 | * The following functions are defined for ppc (deviceid : 0x60) |
| 218 | * controllers |
| 219 | */ |
| 220 | |
| 221 | /** |
| 222 | * megasas_enable_intr_ppc - Enables interrupts |
| 223 | * @regs: MFI register set |
| 224 | */ |
| 225 | static inline void |
| 226 | megasas_enable_intr_ppc(struct megasas_register_set __iomem * regs) |
| 227 | { |
| 228 | writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); |
| 229 | |
| 230 | writel(~0x80000004, &(regs)->outbound_intr_mask); |
| 231 | |
| 232 | /* Dummy readl to force pci flush */ |
| 233 | readl(®s->outbound_intr_mask); |
| 234 | } |
| 235 | |
| 236 | /** |
Sumant Patro | b274cab | 2006-10-03 12:52:12 -0700 | [diff] [blame] | 237 | * megasas_disable_intr_ppc - Disable interrupt |
| 238 | * @regs: MFI register set |
| 239 | */ |
| 240 | static inline void |
| 241 | megasas_disable_intr_ppc(struct megasas_register_set __iomem * regs) |
| 242 | { |
| 243 | u32 mask = 0xFFFFFFFF; |
| 244 | writel(mask, ®s->outbound_intr_mask); |
| 245 | /* Dummy readl to force pci flush */ |
| 246 | readl(®s->outbound_intr_mask); |
| 247 | } |
| 248 | |
| 249 | /** |
Sumant Patro | f9876f0 | 2006-02-03 15:34:35 -0800 | [diff] [blame] | 250 | * megasas_read_fw_status_reg_ppc - returns the current FW status value |
| 251 | * @regs: MFI register set |
| 252 | */ |
| 253 | static u32 |
| 254 | megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs) |
| 255 | { |
| 256 | return readl(&(regs)->outbound_scratch_pad); |
| 257 | } |
| 258 | |
| 259 | /** |
| 260 | * megasas_clear_interrupt_ppc - Check & clear interrupt |
| 261 | * @regs: MFI register set |
| 262 | */ |
| 263 | static int |
| 264 | megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs) |
| 265 | { |
| 266 | u32 status; |
| 267 | /* |
| 268 | * Check if it is our interrupt |
| 269 | */ |
| 270 | status = readl(®s->outbound_intr_status); |
| 271 | |
| 272 | if (!(status & MFI_REPLY_1078_MESSAGE_INTERRUPT)) { |
| 273 | return 1; |
| 274 | } |
| 275 | |
| 276 | /* |
| 277 | * Clear the interrupt by writing back the same value |
| 278 | */ |
| 279 | writel(status, ®s->outbound_doorbell_clear); |
| 280 | |
| 281 | return 0; |
| 282 | } |
| 283 | /** |
| 284 | * megasas_fire_cmd_ppc - Sends command to the FW |
| 285 | * @frame_phys_addr : Physical address of cmd |
| 286 | * @frame_count : Number of frames for the command |
| 287 | * @regs : MFI register set |
| 288 | */ |
| 289 | static inline void |
| 290 | megasas_fire_cmd_ppc(dma_addr_t frame_phys_addr, u32 frame_count, struct megasas_register_set __iomem *regs) |
| 291 | { |
| 292 | writel((frame_phys_addr | (frame_count<<1))|1, |
| 293 | &(regs)->inbound_queue_port); |
| 294 | } |
| 295 | |
| 296 | static struct megasas_instance_template megasas_instance_template_ppc = { |
| 297 | |
| 298 | .fire_cmd = megasas_fire_cmd_ppc, |
| 299 | .enable_intr = megasas_enable_intr_ppc, |
Sumant Patro | b274cab | 2006-10-03 12:52:12 -0700 | [diff] [blame] | 300 | .disable_intr = megasas_disable_intr_ppc, |
Sumant Patro | f9876f0 | 2006-02-03 15:34:35 -0800 | [diff] [blame] | 301 | .clear_intr = megasas_clear_intr_ppc, |
| 302 | .read_fw_status_reg = megasas_read_fw_status_reg_ppc, |
| 303 | }; |
| 304 | |
| 305 | /** |
| 306 | * This is the end of set of functions & definitions |
| 307 | * specific to ppc (deviceid : 0x60) controllers |
| 308 | */ |
| 309 | |
| 310 | /** |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 311 | * megasas_issue_polled - Issues a polling command |
| 312 | * @instance: Adapter soft state |
| 313 | * @cmd: Command packet to be issued |
| 314 | * |
| 315 | * For polling, MFI requires the cmd_status to be set to 0xFF before posting. |
| 316 | */ |
| 317 | static int |
| 318 | megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd) |
| 319 | { |
| 320 | int i; |
| 321 | u32 msecs = MFI_POLL_TIMEOUT_SECS * 1000; |
| 322 | |
| 323 | struct megasas_header *frame_hdr = &cmd->frame->hdr; |
| 324 | |
| 325 | frame_hdr->cmd_status = 0xFF; |
| 326 | frame_hdr->flags |= MFI_FRAME_DONT_POST_IN_REPLY_QUEUE; |
| 327 | |
| 328 | /* |
| 329 | * Issue the frame using inbound queue port |
| 330 | */ |
Sumant Patro | 1341c93 | 2006-01-25 12:02:40 -0800 | [diff] [blame] | 331 | instance->instancet->fire_cmd(cmd->frame_phys_addr ,0,instance->reg_set); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 332 | |
| 333 | /* |
| 334 | * Wait for cmd_status to change |
| 335 | */ |
| 336 | for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i++) { |
| 337 | rmb(); |
| 338 | msleep(1); |
| 339 | } |
| 340 | |
| 341 | if (frame_hdr->cmd_status == 0xff) |
| 342 | return -ETIME; |
| 343 | |
| 344 | return 0; |
| 345 | } |
| 346 | |
| 347 | /** |
| 348 | * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds |
| 349 | * @instance: Adapter soft state |
| 350 | * @cmd: Command to be issued |
| 351 | * |
| 352 | * This function waits on an event for the command to be returned from ISR. |
Sumant Patro | 2a3681e | 2006-10-03 13:19:21 -0700 | [diff] [blame] | 353 | * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 354 | * Used to issue ioctl commands. |
| 355 | */ |
| 356 | static int |
| 357 | megasas_issue_blocked_cmd(struct megasas_instance *instance, |
| 358 | struct megasas_cmd *cmd) |
| 359 | { |
| 360 | cmd->cmd_status = ENODATA; |
| 361 | |
Sumant Patro | 1341c93 | 2006-01-25 12:02:40 -0800 | [diff] [blame] | 362 | instance->instancet->fire_cmd(cmd->frame_phys_addr ,0,instance->reg_set); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 363 | |
Sumant Patro | 2a3681e | 2006-10-03 13:19:21 -0700 | [diff] [blame] | 364 | wait_event_timeout(instance->int_cmd_wait_q, (cmd->cmd_status != ENODATA), |
| 365 | MEGASAS_INTERNAL_CMD_WAIT_TIME*HZ); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 366 | |
| 367 | return 0; |
| 368 | } |
| 369 | |
| 370 | /** |
| 371 | * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd |
| 372 | * @instance: Adapter soft state |
| 373 | * @cmd_to_abort: Previously issued cmd to be aborted |
| 374 | * |
| 375 | * MFI firmware can abort previously issued AEN comamnd (automatic event |
| 376 | * notification). The megasas_issue_blocked_abort_cmd() issues such abort |
Sumant Patro | 2a3681e | 2006-10-03 13:19:21 -0700 | [diff] [blame] | 377 | * cmd and waits for return status. |
| 378 | * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 379 | */ |
| 380 | static int |
| 381 | megasas_issue_blocked_abort_cmd(struct megasas_instance *instance, |
| 382 | struct megasas_cmd *cmd_to_abort) |
| 383 | { |
| 384 | struct megasas_cmd *cmd; |
| 385 | struct megasas_abort_frame *abort_fr; |
| 386 | |
| 387 | cmd = megasas_get_cmd(instance); |
| 388 | |
| 389 | if (!cmd) |
| 390 | return -1; |
| 391 | |
| 392 | abort_fr = &cmd->frame->abort; |
| 393 | |
| 394 | /* |
| 395 | * Prepare and issue the abort frame |
| 396 | */ |
| 397 | abort_fr->cmd = MFI_CMD_ABORT; |
| 398 | abort_fr->cmd_status = 0xFF; |
| 399 | abort_fr->flags = 0; |
| 400 | abort_fr->abort_context = cmd_to_abort->index; |
| 401 | abort_fr->abort_mfi_phys_addr_lo = cmd_to_abort->frame_phys_addr; |
| 402 | abort_fr->abort_mfi_phys_addr_hi = 0; |
| 403 | |
| 404 | cmd->sync_cmd = 1; |
| 405 | cmd->cmd_status = 0xFF; |
| 406 | |
Sumant Patro | 1341c93 | 2006-01-25 12:02:40 -0800 | [diff] [blame] | 407 | instance->instancet->fire_cmd(cmd->frame_phys_addr ,0,instance->reg_set); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 408 | |
| 409 | /* |
| 410 | * Wait for this cmd to complete |
| 411 | */ |
Sumant Patro | 2a3681e | 2006-10-03 13:19:21 -0700 | [diff] [blame] | 412 | wait_event_timeout(instance->abort_cmd_wait_q, (cmd->cmd_status != 0xFF), |
| 413 | MEGASAS_INTERNAL_CMD_WAIT_TIME*HZ); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 414 | |
| 415 | megasas_return_cmd(instance, cmd); |
| 416 | return 0; |
| 417 | } |
| 418 | |
| 419 | /** |
| 420 | * megasas_make_sgl32 - Prepares 32-bit SGL |
| 421 | * @instance: Adapter soft state |
| 422 | * @scp: SCSI command from the mid-layer |
| 423 | * @mfi_sgl: SGL to be filled in |
| 424 | * |
| 425 | * If successful, this function returns the number of SG elements. Otherwise, |
| 426 | * it returnes -1. |
| 427 | */ |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame] | 428 | static int |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 429 | megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp, |
| 430 | union megasas_sgl *mfi_sgl) |
| 431 | { |
| 432 | int i; |
| 433 | int sge_count; |
| 434 | struct scatterlist *os_sgl; |
| 435 | |
FUJITA Tomonori | 155d98f | 2007-05-26 05:04:08 +0900 | [diff] [blame] | 436 | sge_count = scsi_dma_map(scp); |
| 437 | BUG_ON(sge_count < 0); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 438 | |
FUJITA Tomonori | 155d98f | 2007-05-26 05:04:08 +0900 | [diff] [blame] | 439 | if (sge_count) { |
| 440 | scsi_for_each_sg(scp, os_sgl, sge_count, i) { |
| 441 | mfi_sgl->sge32[i].length = sg_dma_len(os_sgl); |
| 442 | mfi_sgl->sge32[i].phys_addr = sg_dma_address(os_sgl); |
| 443 | } |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 444 | } |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 445 | return sge_count; |
| 446 | } |
| 447 | |
| 448 | /** |
| 449 | * megasas_make_sgl64 - Prepares 64-bit SGL |
| 450 | * @instance: Adapter soft state |
| 451 | * @scp: SCSI command from the mid-layer |
| 452 | * @mfi_sgl: SGL to be filled in |
| 453 | * |
| 454 | * If successful, this function returns the number of SG elements. Otherwise, |
| 455 | * it returnes -1. |
| 456 | */ |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame] | 457 | static int |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 458 | megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp, |
| 459 | union megasas_sgl *mfi_sgl) |
| 460 | { |
| 461 | int i; |
| 462 | int sge_count; |
| 463 | struct scatterlist *os_sgl; |
| 464 | |
FUJITA Tomonori | 155d98f | 2007-05-26 05:04:08 +0900 | [diff] [blame] | 465 | sge_count = scsi_dma_map(scp); |
| 466 | BUG_ON(sge_count < 0); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 467 | |
FUJITA Tomonori | 155d98f | 2007-05-26 05:04:08 +0900 | [diff] [blame] | 468 | if (sge_count) { |
| 469 | scsi_for_each_sg(scp, os_sgl, sge_count, i) { |
| 470 | mfi_sgl->sge64[i].length = sg_dma_len(os_sgl); |
| 471 | mfi_sgl->sge64[i].phys_addr = sg_dma_address(os_sgl); |
| 472 | } |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 473 | } |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 474 | return sge_count; |
| 475 | } |
| 476 | |
Sumant Patro | b1df99d | 2006-10-03 12:40:47 -0700 | [diff] [blame] | 477 | /** |
| 478 | * megasas_get_frame_count - Computes the number of frames |
| 479 | * @sge_count : number of sg elements |
| 480 | * |
| 481 | * Returns the number of frames required for numnber of sge's (sge_count) |
| 482 | */ |
| 483 | |
Adrian Bunk | b448de4 | 2006-11-20 03:23:49 +0100 | [diff] [blame] | 484 | static u32 megasas_get_frame_count(u8 sge_count) |
Sumant Patro | b1df99d | 2006-10-03 12:40:47 -0700 | [diff] [blame] | 485 | { |
| 486 | int num_cnt; |
| 487 | int sge_bytes; |
| 488 | u32 sge_sz; |
| 489 | u32 frame_count=0; |
| 490 | |
| 491 | sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : |
| 492 | sizeof(struct megasas_sge32); |
| 493 | |
| 494 | /* |
| 495 | * Main frame can contain 2 SGEs for 64-bit SGLs and |
| 496 | * 3 SGEs for 32-bit SGLs |
| 497 | */ |
| 498 | if (IS_DMA64) |
| 499 | num_cnt = sge_count - 2; |
| 500 | else |
| 501 | num_cnt = sge_count - 3; |
| 502 | |
| 503 | if(num_cnt>0){ |
| 504 | sge_bytes = sge_sz * num_cnt; |
| 505 | |
| 506 | frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) + |
| 507 | ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ; |
| 508 | } |
| 509 | /* Main frame */ |
| 510 | frame_count +=1; |
| 511 | |
| 512 | if (frame_count > 7) |
| 513 | frame_count = 8; |
| 514 | return frame_count; |
| 515 | } |
| 516 | |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 517 | /** |
| 518 | * megasas_build_dcdb - Prepares a direct cdb (DCDB) command |
| 519 | * @instance: Adapter soft state |
| 520 | * @scp: SCSI command |
| 521 | * @cmd: Command to be prepared in |
| 522 | * |
| 523 | * This function prepares CDB commands. These are typcially pass-through |
| 524 | * commands to the devices. |
| 525 | */ |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame] | 526 | static int |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 527 | megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp, |
| 528 | struct megasas_cmd *cmd) |
| 529 | { |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 530 | u32 is_logical; |
| 531 | u32 device_id; |
| 532 | u16 flags = 0; |
| 533 | struct megasas_pthru_frame *pthru; |
| 534 | |
| 535 | is_logical = MEGASAS_IS_LOGICAL(scp); |
| 536 | device_id = MEGASAS_DEV_INDEX(instance, scp); |
| 537 | pthru = (struct megasas_pthru_frame *)cmd->frame; |
| 538 | |
| 539 | if (scp->sc_data_direction == PCI_DMA_TODEVICE) |
| 540 | flags = MFI_FRAME_DIR_WRITE; |
| 541 | else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) |
| 542 | flags = MFI_FRAME_DIR_READ; |
| 543 | else if (scp->sc_data_direction == PCI_DMA_NONE) |
| 544 | flags = MFI_FRAME_DIR_NONE; |
| 545 | |
| 546 | /* |
| 547 | * Prepare the DCDB frame |
| 548 | */ |
| 549 | pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO; |
| 550 | pthru->cmd_status = 0x0; |
| 551 | pthru->scsi_status = 0x0; |
| 552 | pthru->target_id = device_id; |
| 553 | pthru->lun = scp->device->lun; |
| 554 | pthru->cdb_len = scp->cmd_len; |
| 555 | pthru->timeout = 0; |
| 556 | pthru->flags = flags; |
FUJITA Tomonori | 155d98f | 2007-05-26 05:04:08 +0900 | [diff] [blame] | 557 | pthru->data_xfer_len = scsi_bufflen(scp); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 558 | |
| 559 | memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); |
| 560 | |
| 561 | /* |
| 562 | * Construct SGL |
| 563 | */ |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 564 | if (IS_DMA64) { |
| 565 | pthru->flags |= MFI_FRAME_SGL64; |
| 566 | pthru->sge_count = megasas_make_sgl64(instance, scp, |
| 567 | &pthru->sgl); |
| 568 | } else |
| 569 | pthru->sge_count = megasas_make_sgl32(instance, scp, |
| 570 | &pthru->sgl); |
| 571 | |
| 572 | /* |
| 573 | * Sense info specific |
| 574 | */ |
| 575 | pthru->sense_len = SCSI_SENSE_BUFFERSIZE; |
| 576 | pthru->sense_buf_phys_addr_hi = 0; |
| 577 | pthru->sense_buf_phys_addr_lo = cmd->sense_phys_addr; |
| 578 | |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 579 | /* |
| 580 | * Compute the total number of frames this command consumes. FW uses |
| 581 | * this number to pull sufficient number of frames from host memory. |
| 582 | */ |
Sumant Patro | b1df99d | 2006-10-03 12:40:47 -0700 | [diff] [blame] | 583 | cmd->frame_count = megasas_get_frame_count(pthru->sge_count); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 584 | |
| 585 | return cmd->frame_count; |
| 586 | } |
| 587 | |
| 588 | /** |
| 589 | * megasas_build_ldio - Prepares IOs to logical devices |
| 590 | * @instance: Adapter soft state |
| 591 | * @scp: SCSI command |
| 592 | * @cmd: Command to to be prepared |
| 593 | * |
| 594 | * Frames (and accompanying SGLs) for regular SCSI IOs use this function. |
| 595 | */ |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame] | 596 | static int |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 597 | megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp, |
| 598 | struct megasas_cmd *cmd) |
| 599 | { |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 600 | u32 device_id; |
| 601 | u8 sc = scp->cmnd[0]; |
| 602 | u16 flags = 0; |
| 603 | struct megasas_io_frame *ldio; |
| 604 | |
| 605 | device_id = MEGASAS_DEV_INDEX(instance, scp); |
| 606 | ldio = (struct megasas_io_frame *)cmd->frame; |
| 607 | |
| 608 | if (scp->sc_data_direction == PCI_DMA_TODEVICE) |
| 609 | flags = MFI_FRAME_DIR_WRITE; |
| 610 | else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) |
| 611 | flags = MFI_FRAME_DIR_READ; |
| 612 | |
| 613 | /* |
Sumant Patro | b1df99d | 2006-10-03 12:40:47 -0700 | [diff] [blame] | 614 | * Prepare the Logical IO frame: 2nd bit is zero for all read cmds |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 615 | */ |
| 616 | ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ; |
| 617 | ldio->cmd_status = 0x0; |
| 618 | ldio->scsi_status = 0x0; |
| 619 | ldio->target_id = device_id; |
| 620 | ldio->timeout = 0; |
| 621 | ldio->reserved_0 = 0; |
| 622 | ldio->pad_0 = 0; |
| 623 | ldio->flags = flags; |
| 624 | ldio->start_lba_hi = 0; |
| 625 | ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0; |
| 626 | |
| 627 | /* |
| 628 | * 6-byte READ(0x08) or WRITE(0x0A) cdb |
| 629 | */ |
| 630 | if (scp->cmd_len == 6) { |
| 631 | ldio->lba_count = (u32) scp->cmnd[4]; |
| 632 | ldio->start_lba_lo = ((u32) scp->cmnd[1] << 16) | |
| 633 | ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3]; |
| 634 | |
| 635 | ldio->start_lba_lo &= 0x1FFFFF; |
| 636 | } |
| 637 | |
| 638 | /* |
| 639 | * 10-byte READ(0x28) or WRITE(0x2A) cdb |
| 640 | */ |
| 641 | else if (scp->cmd_len == 10) { |
| 642 | ldio->lba_count = (u32) scp->cmnd[8] | |
| 643 | ((u32) scp->cmnd[7] << 8); |
| 644 | ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) | |
| 645 | ((u32) scp->cmnd[3] << 16) | |
| 646 | ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; |
| 647 | } |
| 648 | |
| 649 | /* |
| 650 | * 12-byte READ(0xA8) or WRITE(0xAA) cdb |
| 651 | */ |
| 652 | else if (scp->cmd_len == 12) { |
| 653 | ldio->lba_count = ((u32) scp->cmnd[6] << 24) | |
| 654 | ((u32) scp->cmnd[7] << 16) | |
| 655 | ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; |
| 656 | |
| 657 | ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) | |
| 658 | ((u32) scp->cmnd[3] << 16) | |
| 659 | ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; |
| 660 | } |
| 661 | |
| 662 | /* |
| 663 | * 16-byte READ(0x88) or WRITE(0x8A) cdb |
| 664 | */ |
| 665 | else if (scp->cmd_len == 16) { |
| 666 | ldio->lba_count = ((u32) scp->cmnd[10] << 24) | |
| 667 | ((u32) scp->cmnd[11] << 16) | |
| 668 | ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13]; |
| 669 | |
| 670 | ldio->start_lba_lo = ((u32) scp->cmnd[6] << 24) | |
| 671 | ((u32) scp->cmnd[7] << 16) | |
| 672 | ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; |
| 673 | |
| 674 | ldio->start_lba_hi = ((u32) scp->cmnd[2] << 24) | |
| 675 | ((u32) scp->cmnd[3] << 16) | |
| 676 | ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; |
| 677 | |
| 678 | } |
| 679 | |
| 680 | /* |
| 681 | * Construct SGL |
| 682 | */ |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 683 | if (IS_DMA64) { |
| 684 | ldio->flags |= MFI_FRAME_SGL64; |
| 685 | ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl); |
| 686 | } else |
| 687 | ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl); |
| 688 | |
| 689 | /* |
| 690 | * Sense info specific |
| 691 | */ |
| 692 | ldio->sense_len = SCSI_SENSE_BUFFERSIZE; |
| 693 | ldio->sense_buf_phys_addr_hi = 0; |
| 694 | ldio->sense_buf_phys_addr_lo = cmd->sense_phys_addr; |
| 695 | |
Sumant Patro | b1df99d | 2006-10-03 12:40:47 -0700 | [diff] [blame] | 696 | /* |
| 697 | * Compute the total number of frames this command consumes. FW uses |
| 698 | * this number to pull sufficient number of frames from host memory. |
| 699 | */ |
| 700 | cmd->frame_count = megasas_get_frame_count(ldio->sge_count); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 701 | |
| 702 | return cmd->frame_count; |
| 703 | } |
| 704 | |
| 705 | /** |
Sumant Patro | cb59aa6 | 2006-01-25 11:53:25 -0800 | [diff] [blame] | 706 | * megasas_is_ldio - Checks if the cmd is for logical drive |
| 707 | * @scmd: SCSI command |
| 708 | * |
| 709 | * Called by megasas_queue_command to find out if the command to be queued |
| 710 | * is a logical drive command |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 711 | */ |
Sumant Patro | cb59aa6 | 2006-01-25 11:53:25 -0800 | [diff] [blame] | 712 | static inline int megasas_is_ldio(struct scsi_cmnd *cmd) |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 713 | { |
Sumant Patro | cb59aa6 | 2006-01-25 11:53:25 -0800 | [diff] [blame] | 714 | if (!MEGASAS_IS_LOGICAL(cmd)) |
| 715 | return 0; |
| 716 | switch (cmd->cmnd[0]) { |
| 717 | case READ_10: |
| 718 | case WRITE_10: |
| 719 | case READ_12: |
| 720 | case WRITE_12: |
| 721 | case READ_6: |
| 722 | case WRITE_6: |
| 723 | case READ_16: |
| 724 | case WRITE_16: |
| 725 | return 1; |
| 726 | default: |
| 727 | return 0; |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 728 | } |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 729 | } |
| 730 | |
Sumant Patro | 658dced | 2006-10-03 13:09:14 -0700 | [diff] [blame] | 731 | /** |
| 732 | * megasas_dump_pending_frames - Dumps the frame address of all pending cmds |
| 733 | * in FW |
| 734 | * @instance: Adapter soft state |
| 735 | */ |
| 736 | static inline void |
| 737 | megasas_dump_pending_frames(struct megasas_instance *instance) |
| 738 | { |
| 739 | struct megasas_cmd *cmd; |
| 740 | int i,n; |
| 741 | union megasas_sgl *mfi_sgl; |
| 742 | struct megasas_io_frame *ldio; |
| 743 | struct megasas_pthru_frame *pthru; |
| 744 | u32 sgcount; |
| 745 | u32 max_cmd = instance->max_fw_cmds; |
| 746 | |
| 747 | printk(KERN_ERR "\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no); |
| 748 | printk(KERN_ERR "megasas[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding)); |
| 749 | if (IS_DMA64) |
| 750 | printk(KERN_ERR "\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no); |
| 751 | else |
| 752 | printk(KERN_ERR "\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no); |
| 753 | |
| 754 | printk(KERN_ERR "megasas[%d]: Pending OS cmds in FW : \n",instance->host->host_no); |
| 755 | for (i = 0; i < max_cmd; i++) { |
| 756 | cmd = instance->cmd_list[i]; |
| 757 | if(!cmd->scmd) |
| 758 | continue; |
| 759 | printk(KERN_ERR "megasas[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr); |
| 760 | if (megasas_is_ldio(cmd->scmd)){ |
| 761 | ldio = (struct megasas_io_frame *)cmd->frame; |
| 762 | mfi_sgl = &ldio->sgl; |
| 763 | sgcount = ldio->sge_count; |
| 764 | printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",instance->host->host_no, cmd->frame_count,ldio->cmd,ldio->target_id, ldio->start_lba_lo,ldio->start_lba_hi,ldio->sense_buf_phys_addr_lo,sgcount); |
| 765 | } |
| 766 | else { |
| 767 | pthru = (struct megasas_pthru_frame *) cmd->frame; |
| 768 | mfi_sgl = &pthru->sgl; |
| 769 | sgcount = pthru->sge_count; |
| 770 | printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",instance->host->host_no,cmd->frame_count,pthru->cmd,pthru->target_id,pthru->lun,pthru->cdb_len , pthru->data_xfer_len,pthru->sense_buf_phys_addr_lo,sgcount); |
| 771 | } |
| 772 | if(megasas_dbg_lvl & MEGASAS_DBG_LVL){ |
| 773 | for (n = 0; n < sgcount; n++){ |
| 774 | if (IS_DMA64) |
| 775 | printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%08lx ",mfi_sgl->sge64[n].length , (unsigned long)mfi_sgl->sge64[n].phys_addr) ; |
| 776 | else |
| 777 | printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%x ",mfi_sgl->sge32[n].length , mfi_sgl->sge32[n].phys_addr) ; |
| 778 | } |
| 779 | } |
| 780 | printk(KERN_ERR "\n"); |
| 781 | } /*for max_cmd*/ |
| 782 | printk(KERN_ERR "\nmegasas[%d]: Pending Internal cmds in FW : \n",instance->host->host_no); |
| 783 | for (i = 0; i < max_cmd; i++) { |
| 784 | |
| 785 | cmd = instance->cmd_list[i]; |
| 786 | |
| 787 | if(cmd->sync_cmd == 1){ |
| 788 | printk(KERN_ERR "0x%08lx : ", (unsigned long)cmd->frame_phys_addr); |
| 789 | } |
| 790 | } |
| 791 | printk(KERN_ERR "megasas[%d]: Dumping Done.\n\n",instance->host->host_no); |
| 792 | } |
| 793 | |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 794 | /** |
| 795 | * megasas_queue_command - Queue entry point |
| 796 | * @scmd: SCSI command to be queued |
| 797 | * @done: Callback entry point |
| 798 | */ |
| 799 | static int |
| 800 | megasas_queue_command(struct scsi_cmnd *scmd, void (*done) (struct scsi_cmnd *)) |
| 801 | { |
| 802 | u32 frame_count; |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 803 | struct megasas_cmd *cmd; |
| 804 | struct megasas_instance *instance; |
| 805 | |
| 806 | instance = (struct megasas_instance *) |
| 807 | scmd->device->host->hostdata; |
Sumant Patro | af37acf | 2007-02-14 12:34:46 -0800 | [diff] [blame] | 808 | |
| 809 | /* Don't process if we have already declared adapter dead */ |
| 810 | if (instance->hw_crit_error) |
| 811 | return SCSI_MLQUEUE_HOST_BUSY; |
| 812 | |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 813 | scmd->scsi_done = done; |
| 814 | scmd->result = 0; |
| 815 | |
Sumant Patro | cb59aa6 | 2006-01-25 11:53:25 -0800 | [diff] [blame] | 816 | if (MEGASAS_IS_LOGICAL(scmd) && |
| 817 | (scmd->device->id >= MEGASAS_MAX_LD || scmd->device->lun)) { |
| 818 | scmd->result = DID_BAD_TARGET << 16; |
| 819 | goto out_done; |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 820 | } |
| 821 | |
Sumant Patro | 02b01e0 | 2007-02-14 13:00:55 -0800 | [diff] [blame] | 822 | switch (scmd->cmnd[0]) { |
| 823 | case SYNCHRONIZE_CACHE: |
| 824 | /* |
| 825 | * FW takes care of flush cache on its own |
| 826 | * No need to send it down |
| 827 | */ |
| 828 | scmd->result = DID_OK << 16; |
| 829 | goto out_done; |
| 830 | default: |
| 831 | break; |
| 832 | } |
| 833 | |
Sumant Patro | cb59aa6 | 2006-01-25 11:53:25 -0800 | [diff] [blame] | 834 | cmd = megasas_get_cmd(instance); |
| 835 | if (!cmd) |
| 836 | return SCSI_MLQUEUE_HOST_BUSY; |
| 837 | |
| 838 | /* |
| 839 | * Logical drive command |
| 840 | */ |
| 841 | if (megasas_is_ldio(scmd)) |
| 842 | frame_count = megasas_build_ldio(instance, scmd, cmd); |
| 843 | else |
| 844 | frame_count = megasas_build_dcdb(instance, scmd, cmd); |
| 845 | |
| 846 | if (!frame_count) |
| 847 | goto out_return_cmd; |
| 848 | |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 849 | cmd->scmd = scmd; |
Sumant Patro | 05e9ebb | 2007-05-17 05:47:51 -0700 | [diff] [blame] | 850 | scmd->SCp.ptr = (char *)cmd; |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 851 | |
| 852 | /* |
| 853 | * Issue the command to the FW |
| 854 | */ |
Sumant Patro | e4a082c | 2006-05-30 12:03:37 -0700 | [diff] [blame] | 855 | atomic_inc(&instance->fw_outstanding); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 856 | |
Sumant Patro | 1341c93 | 2006-01-25 12:02:40 -0800 | [diff] [blame] | 857 | instance->instancet->fire_cmd(cmd->frame_phys_addr ,cmd->frame_count-1,instance->reg_set); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 858 | |
| 859 | return 0; |
Sumant Patro | cb59aa6 | 2006-01-25 11:53:25 -0800 | [diff] [blame] | 860 | |
| 861 | out_return_cmd: |
| 862 | megasas_return_cmd(instance, cmd); |
| 863 | out_done: |
| 864 | done(scmd); |
| 865 | return 0; |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 866 | } |
| 867 | |
Christoph Hellwig | 147aab6 | 2006-02-17 12:13:48 +0100 | [diff] [blame] | 868 | static int megasas_slave_configure(struct scsi_device *sdev) |
| 869 | { |
| 870 | /* |
| 871 | * Don't export physical disk devices to the disk driver. |
| 872 | * |
| 873 | * FIXME: Currently we don't export them to the midlayer at all. |
| 874 | * That will be fixed once LSI engineers have audited the |
| 875 | * firmware for possible issues. |
| 876 | */ |
| 877 | if (sdev->channel < MEGASAS_MAX_PD_CHANNELS && sdev->type == TYPE_DISK) |
| 878 | return -ENXIO; |
Christoph Hellwig | e5b3a65 | 2006-03-10 17:08:57 +0100 | [diff] [blame] | 879 | |
| 880 | /* |
| 881 | * The RAID firmware may require extended timeouts. |
| 882 | */ |
| 883 | if (sdev->channel >= MEGASAS_MAX_PD_CHANNELS) |
Sumant Patro | 05e9ebb | 2007-05-17 05:47:51 -0700 | [diff] [blame] | 884 | sdev->timeout = MEGASAS_DEFAULT_CMD_TIMEOUT * HZ; |
Christoph Hellwig | 147aab6 | 2006-02-17 12:13:48 +0100 | [diff] [blame] | 885 | return 0; |
| 886 | } |
| 887 | |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 888 | /** |
| 889 | * megasas_wait_for_outstanding - Wait for all outstanding cmds |
| 890 | * @instance: Adapter soft state |
| 891 | * |
| 892 | * This function waits for upto MEGASAS_RESET_WAIT_TIME seconds for FW to |
| 893 | * complete all its outstanding commands. Returns error if one or more IOs |
| 894 | * are pending after this time period. It also marks the controller dead. |
| 895 | */ |
| 896 | static int megasas_wait_for_outstanding(struct megasas_instance *instance) |
| 897 | { |
| 898 | int i; |
| 899 | u32 wait_time = MEGASAS_RESET_WAIT_TIME; |
| 900 | |
| 901 | for (i = 0; i < wait_time; i++) { |
| 902 | |
Sumant Patro | e4a082c | 2006-05-30 12:03:37 -0700 | [diff] [blame] | 903 | int outstanding = atomic_read(&instance->fw_outstanding); |
| 904 | |
| 905 | if (!outstanding) |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 906 | break; |
| 907 | |
| 908 | if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { |
| 909 | printk(KERN_NOTICE "megasas: [%2d]waiting for %d " |
Sumant Patro | e4a082c | 2006-05-30 12:03:37 -0700 | [diff] [blame] | 910 | "commands to complete\n",i,outstanding); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 911 | } |
| 912 | |
| 913 | msleep(1000); |
| 914 | } |
| 915 | |
Sumant Patro | e4a082c | 2006-05-30 12:03:37 -0700 | [diff] [blame] | 916 | if (atomic_read(&instance->fw_outstanding)) { |
Sumant Patro | e3bbff9 | 2006-10-03 12:28:49 -0700 | [diff] [blame] | 917 | /* |
| 918 | * Send signal to FW to stop processing any pending cmds. |
| 919 | * The controller will be taken offline by the OS now. |
| 920 | */ |
| 921 | writel(MFI_STOP_ADP, |
| 922 | &instance->reg_set->inbound_doorbell); |
Sumant Patro | 658dced | 2006-10-03 13:09:14 -0700 | [diff] [blame] | 923 | megasas_dump_pending_frames(instance); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 924 | instance->hw_crit_error = 1; |
| 925 | return FAILED; |
| 926 | } |
| 927 | |
| 928 | return SUCCESS; |
| 929 | } |
| 930 | |
| 931 | /** |
| 932 | * megasas_generic_reset - Generic reset routine |
| 933 | * @scmd: Mid-layer SCSI command |
| 934 | * |
| 935 | * This routine implements a generic reset handler for device, bus and host |
| 936 | * reset requests. Device, bus and host specific reset handlers can use this |
| 937 | * function after they do their specific tasks. |
| 938 | */ |
| 939 | static int megasas_generic_reset(struct scsi_cmnd *scmd) |
| 940 | { |
| 941 | int ret_val; |
| 942 | struct megasas_instance *instance; |
| 943 | |
| 944 | instance = (struct megasas_instance *)scmd->device->host->hostdata; |
| 945 | |
Sumant Patro | 05e9ebb | 2007-05-17 05:47:51 -0700 | [diff] [blame] | 946 | scmd_printk(KERN_NOTICE, scmd, "megasas: RESET -%ld cmd=%x retries=%x\n", |
| 947 | scmd->serial_number, scmd->cmnd[0], scmd->retries); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 948 | |
| 949 | if (instance->hw_crit_error) { |
| 950 | printk(KERN_ERR "megasas: cannot recover from previous reset " |
| 951 | "failures\n"); |
| 952 | return FAILED; |
| 953 | } |
| 954 | |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 955 | ret_val = megasas_wait_for_outstanding(instance); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 956 | if (ret_val == SUCCESS) |
| 957 | printk(KERN_NOTICE "megasas: reset successful \n"); |
| 958 | else |
| 959 | printk(KERN_ERR "megasas: failed to do reset\n"); |
| 960 | |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 961 | return ret_val; |
| 962 | } |
| 963 | |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 964 | /** |
Sumant Patro | 05e9ebb | 2007-05-17 05:47:51 -0700 | [diff] [blame] | 965 | * megasas_reset_timer - quiesce the adapter if required |
| 966 | * @scmd: scsi cmnd |
| 967 | * |
| 968 | * Sets the FW busy flag and reduces the host->can_queue if the |
| 969 | * cmd has not been completed within the timeout period. |
| 970 | */ |
| 971 | static enum |
| 972 | scsi_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd) |
| 973 | { |
| 974 | struct megasas_cmd *cmd = (struct megasas_cmd *)scmd->SCp.ptr; |
| 975 | struct megasas_instance *instance; |
| 976 | unsigned long flags; |
| 977 | |
| 978 | if (time_after(jiffies, scmd->jiffies_at_alloc + |
| 979 | (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) { |
| 980 | return EH_NOT_HANDLED; |
| 981 | } |
| 982 | |
| 983 | instance = cmd->instance; |
| 984 | if (!(instance->flag & MEGASAS_FW_BUSY)) { |
| 985 | /* FW is busy, throttle IO */ |
| 986 | spin_lock_irqsave(instance->host->host_lock, flags); |
| 987 | |
| 988 | instance->host->can_queue = 16; |
| 989 | instance->last_time = jiffies; |
| 990 | instance->flag |= MEGASAS_FW_BUSY; |
| 991 | |
| 992 | spin_unlock_irqrestore(instance->host->host_lock, flags); |
| 993 | } |
| 994 | return EH_RESET_TIMER; |
| 995 | } |
| 996 | |
| 997 | /** |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 998 | * megasas_reset_device - Device reset handler entry point |
| 999 | */ |
| 1000 | static int megasas_reset_device(struct scsi_cmnd *scmd) |
| 1001 | { |
| 1002 | int ret; |
| 1003 | |
| 1004 | /* |
| 1005 | * First wait for all commands to complete |
| 1006 | */ |
| 1007 | ret = megasas_generic_reset(scmd); |
| 1008 | |
| 1009 | return ret; |
| 1010 | } |
| 1011 | |
| 1012 | /** |
| 1013 | * megasas_reset_bus_host - Bus & host reset handler entry point |
| 1014 | */ |
| 1015 | static int megasas_reset_bus_host(struct scsi_cmnd *scmd) |
| 1016 | { |
| 1017 | int ret; |
| 1018 | |
| 1019 | /* |
Uwe Zeisberger | 80682fa | 2006-03-22 00:21:33 +0100 | [diff] [blame] | 1020 | * First wait for all commands to complete |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1021 | */ |
| 1022 | ret = megasas_generic_reset(scmd); |
| 1023 | |
| 1024 | return ret; |
| 1025 | } |
| 1026 | |
| 1027 | /** |
Sumant Patro | cf62a0a | 2007-02-14 12:41:55 -0800 | [diff] [blame] | 1028 | * megasas_bios_param - Returns disk geometry for a disk |
| 1029 | * @sdev: device handle |
| 1030 | * @bdev: block device |
| 1031 | * @capacity: drive capacity |
| 1032 | * @geom: geometry parameters |
| 1033 | */ |
| 1034 | static int |
| 1035 | megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev, |
| 1036 | sector_t capacity, int geom[]) |
| 1037 | { |
| 1038 | int heads; |
| 1039 | int sectors; |
| 1040 | sector_t cylinders; |
| 1041 | unsigned long tmp; |
| 1042 | /* Default heads (64) & sectors (32) */ |
| 1043 | heads = 64; |
| 1044 | sectors = 32; |
| 1045 | |
| 1046 | tmp = heads * sectors; |
| 1047 | cylinders = capacity; |
| 1048 | |
| 1049 | sector_div(cylinders, tmp); |
| 1050 | |
| 1051 | /* |
| 1052 | * Handle extended translation size for logical drives > 1Gb |
| 1053 | */ |
| 1054 | |
| 1055 | if (capacity >= 0x200000) { |
| 1056 | heads = 255; |
| 1057 | sectors = 63; |
| 1058 | tmp = heads*sectors; |
| 1059 | cylinders = capacity; |
| 1060 | sector_div(cylinders, tmp); |
| 1061 | } |
| 1062 | |
| 1063 | geom[0] = heads; |
| 1064 | geom[1] = sectors; |
| 1065 | geom[2] = cylinders; |
| 1066 | |
| 1067 | return 0; |
| 1068 | } |
| 1069 | |
| 1070 | /** |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1071 | * megasas_service_aen - Processes an event notification |
| 1072 | * @instance: Adapter soft state |
| 1073 | * @cmd: AEN command completed by the ISR |
| 1074 | * |
| 1075 | * For AEN, driver sends a command down to FW that is held by the FW till an |
| 1076 | * event occurs. When an event of interest occurs, FW completes the command |
| 1077 | * that it was previously holding. |
| 1078 | * |
| 1079 | * This routines sends SIGIO signal to processes that have registered with the |
| 1080 | * driver for AEN. |
| 1081 | */ |
| 1082 | static void |
| 1083 | megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd) |
| 1084 | { |
| 1085 | /* |
| 1086 | * Don't signal app if it is just an aborted previously registered aen |
| 1087 | */ |
| 1088 | if (!cmd->abort_aen) |
| 1089 | kill_fasync(&megasas_async_queue, SIGIO, POLL_IN); |
| 1090 | else |
| 1091 | cmd->abort_aen = 0; |
| 1092 | |
| 1093 | instance->aen_cmd = NULL; |
| 1094 | megasas_return_cmd(instance, cmd); |
| 1095 | } |
| 1096 | |
| 1097 | /* |
| 1098 | * Scsi host template for megaraid_sas driver |
| 1099 | */ |
| 1100 | static struct scsi_host_template megasas_template = { |
| 1101 | |
| 1102 | .module = THIS_MODULE, |
| 1103 | .name = "LSI Logic SAS based MegaRAID driver", |
| 1104 | .proc_name = "megaraid_sas", |
Christoph Hellwig | 147aab6 | 2006-02-17 12:13:48 +0100 | [diff] [blame] | 1105 | .slave_configure = megasas_slave_configure, |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1106 | .queuecommand = megasas_queue_command, |
| 1107 | .eh_device_reset_handler = megasas_reset_device, |
| 1108 | .eh_bus_reset_handler = megasas_reset_bus_host, |
| 1109 | .eh_host_reset_handler = megasas_reset_bus_host, |
Sumant Patro | 05e9ebb | 2007-05-17 05:47:51 -0700 | [diff] [blame] | 1110 | .eh_timed_out = megasas_reset_timer, |
Sumant Patro | cf62a0a | 2007-02-14 12:41:55 -0800 | [diff] [blame] | 1111 | .bios_param = megasas_bios_param, |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1112 | .use_clustering = ENABLE_CLUSTERING, |
| 1113 | }; |
| 1114 | |
| 1115 | /** |
| 1116 | * megasas_complete_int_cmd - Completes an internal command |
| 1117 | * @instance: Adapter soft state |
| 1118 | * @cmd: Command to be completed |
| 1119 | * |
| 1120 | * The megasas_issue_blocked_cmd() function waits for a command to complete |
| 1121 | * after it issues a command. This function wakes up that waiting routine by |
| 1122 | * calling wake_up() on the wait queue. |
| 1123 | */ |
| 1124 | static void |
| 1125 | megasas_complete_int_cmd(struct megasas_instance *instance, |
| 1126 | struct megasas_cmd *cmd) |
| 1127 | { |
| 1128 | cmd->cmd_status = cmd->frame->io.cmd_status; |
| 1129 | |
| 1130 | if (cmd->cmd_status == ENODATA) { |
| 1131 | cmd->cmd_status = 0; |
| 1132 | } |
| 1133 | wake_up(&instance->int_cmd_wait_q); |
| 1134 | } |
| 1135 | |
| 1136 | /** |
| 1137 | * megasas_complete_abort - Completes aborting a command |
| 1138 | * @instance: Adapter soft state |
| 1139 | * @cmd: Cmd that was issued to abort another cmd |
| 1140 | * |
| 1141 | * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q |
| 1142 | * after it issues an abort on a previously issued command. This function |
| 1143 | * wakes up all functions waiting on the same wait queue. |
| 1144 | */ |
| 1145 | static void |
| 1146 | megasas_complete_abort(struct megasas_instance *instance, |
| 1147 | struct megasas_cmd *cmd) |
| 1148 | { |
| 1149 | if (cmd->sync_cmd) { |
| 1150 | cmd->sync_cmd = 0; |
| 1151 | cmd->cmd_status = 0; |
| 1152 | wake_up(&instance->abort_cmd_wait_q); |
| 1153 | } |
| 1154 | |
| 1155 | return; |
| 1156 | } |
| 1157 | |
| 1158 | /** |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1159 | * megasas_complete_cmd - Completes a command |
| 1160 | * @instance: Adapter soft state |
| 1161 | * @cmd: Command to be completed |
| 1162 | * @alt_status: If non-zero, use this value as status to |
| 1163 | * SCSI mid-layer instead of the value returned |
| 1164 | * by the FW. This should be used if caller wants |
| 1165 | * an alternate status (as in the case of aborted |
| 1166 | * commands) |
| 1167 | */ |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame] | 1168 | static void |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1169 | megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, |
| 1170 | u8 alt_status) |
| 1171 | { |
| 1172 | int exception = 0; |
| 1173 | struct megasas_header *hdr = &cmd->frame->hdr; |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1174 | |
Sumant Patro | 05e9ebb | 2007-05-17 05:47:51 -0700 | [diff] [blame] | 1175 | if (cmd->scmd) |
| 1176 | cmd->scmd->SCp.ptr = NULL; |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1177 | |
| 1178 | switch (hdr->cmd) { |
| 1179 | |
| 1180 | case MFI_CMD_PD_SCSI_IO: |
| 1181 | case MFI_CMD_LD_SCSI_IO: |
| 1182 | |
| 1183 | /* |
| 1184 | * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been |
| 1185 | * issued either through an IO path or an IOCTL path. If it |
| 1186 | * was via IOCTL, we will send it to internal completion. |
| 1187 | */ |
| 1188 | if (cmd->sync_cmd) { |
| 1189 | cmd->sync_cmd = 0; |
| 1190 | megasas_complete_int_cmd(instance, cmd); |
| 1191 | break; |
| 1192 | } |
| 1193 | |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1194 | case MFI_CMD_LD_READ: |
| 1195 | case MFI_CMD_LD_WRITE: |
| 1196 | |
| 1197 | if (alt_status) { |
| 1198 | cmd->scmd->result = alt_status << 16; |
| 1199 | exception = 1; |
| 1200 | } |
| 1201 | |
| 1202 | if (exception) { |
| 1203 | |
Sumant Patro | e4a082c | 2006-05-30 12:03:37 -0700 | [diff] [blame] | 1204 | atomic_dec(&instance->fw_outstanding); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1205 | |
FUJITA Tomonori | 155d98f | 2007-05-26 05:04:08 +0900 | [diff] [blame] | 1206 | scsi_dma_unmap(cmd->scmd); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1207 | cmd->scmd->scsi_done(cmd->scmd); |
| 1208 | megasas_return_cmd(instance, cmd); |
| 1209 | |
| 1210 | break; |
| 1211 | } |
| 1212 | |
| 1213 | switch (hdr->cmd_status) { |
| 1214 | |
| 1215 | case MFI_STAT_OK: |
| 1216 | cmd->scmd->result = DID_OK << 16; |
| 1217 | break; |
| 1218 | |
| 1219 | case MFI_STAT_SCSI_IO_FAILED: |
| 1220 | case MFI_STAT_LD_INIT_IN_PROGRESS: |
| 1221 | cmd->scmd->result = |
| 1222 | (DID_ERROR << 16) | hdr->scsi_status; |
| 1223 | break; |
| 1224 | |
| 1225 | case MFI_STAT_SCSI_DONE_WITH_ERROR: |
| 1226 | |
| 1227 | cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status; |
| 1228 | |
| 1229 | if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) { |
| 1230 | memset(cmd->scmd->sense_buffer, 0, |
| 1231 | SCSI_SENSE_BUFFERSIZE); |
| 1232 | memcpy(cmd->scmd->sense_buffer, cmd->sense, |
| 1233 | hdr->sense_len); |
| 1234 | |
| 1235 | cmd->scmd->result |= DRIVER_SENSE << 24; |
| 1236 | } |
| 1237 | |
| 1238 | break; |
| 1239 | |
| 1240 | case MFI_STAT_LD_OFFLINE: |
| 1241 | case MFI_STAT_DEVICE_NOT_FOUND: |
| 1242 | cmd->scmd->result = DID_BAD_TARGET << 16; |
| 1243 | break; |
| 1244 | |
| 1245 | default: |
| 1246 | printk(KERN_DEBUG "megasas: MFI FW status %#x\n", |
| 1247 | hdr->cmd_status); |
| 1248 | cmd->scmd->result = DID_ERROR << 16; |
| 1249 | break; |
| 1250 | } |
| 1251 | |
Sumant Patro | e4a082c | 2006-05-30 12:03:37 -0700 | [diff] [blame] | 1252 | atomic_dec(&instance->fw_outstanding); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1253 | |
FUJITA Tomonori | 155d98f | 2007-05-26 05:04:08 +0900 | [diff] [blame] | 1254 | scsi_dma_unmap(cmd->scmd); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1255 | cmd->scmd->scsi_done(cmd->scmd); |
| 1256 | megasas_return_cmd(instance, cmd); |
| 1257 | |
| 1258 | break; |
| 1259 | |
| 1260 | case MFI_CMD_SMP: |
| 1261 | case MFI_CMD_STP: |
| 1262 | case MFI_CMD_DCMD: |
| 1263 | |
| 1264 | /* |
| 1265 | * See if got an event notification |
| 1266 | */ |
| 1267 | if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_WAIT) |
| 1268 | megasas_service_aen(instance, cmd); |
| 1269 | else |
| 1270 | megasas_complete_int_cmd(instance, cmd); |
| 1271 | |
| 1272 | break; |
| 1273 | |
| 1274 | case MFI_CMD_ABORT: |
| 1275 | /* |
| 1276 | * Cmd issued to abort another cmd returned |
| 1277 | */ |
| 1278 | megasas_complete_abort(instance, cmd); |
| 1279 | break; |
| 1280 | |
| 1281 | default: |
| 1282 | printk("megasas: Unknown command completed! [0x%X]\n", |
| 1283 | hdr->cmd); |
| 1284 | break; |
| 1285 | } |
| 1286 | } |
| 1287 | |
| 1288 | /** |
| 1289 | * megasas_deplete_reply_queue - Processes all completed commands |
| 1290 | * @instance: Adapter soft state |
| 1291 | * @alt_status: Alternate status to be returned to |
| 1292 | * SCSI mid-layer instead of the status |
| 1293 | * returned by the FW |
| 1294 | */ |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame] | 1295 | static int |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1296 | megasas_deplete_reply_queue(struct megasas_instance *instance, u8 alt_status) |
| 1297 | { |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1298 | /* |
| 1299 | * Check if it is our interrupt |
Sumant Patro | 1341c93 | 2006-01-25 12:02:40 -0800 | [diff] [blame] | 1300 | * Clear the interrupt |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1301 | */ |
Sumant Patro | 1341c93 | 2006-01-25 12:02:40 -0800 | [diff] [blame] | 1302 | if(instance->instancet->clear_intr(instance->reg_set)) |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1303 | return IRQ_NONE; |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1304 | |
Sumant Patro | af37acf | 2007-02-14 12:34:46 -0800 | [diff] [blame] | 1305 | if (instance->hw_crit_error) |
| 1306 | goto out_done; |
Sumant Patro | 5d018ad | 2006-10-03 13:13:18 -0700 | [diff] [blame] | 1307 | /* |
| 1308 | * Schedule the tasklet for cmd completion |
| 1309 | */ |
| 1310 | tasklet_schedule(&instance->isr_tasklet); |
Sumant Patro | af37acf | 2007-02-14 12:34:46 -0800 | [diff] [blame] | 1311 | out_done: |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1312 | return IRQ_HANDLED; |
| 1313 | } |
| 1314 | |
| 1315 | /** |
| 1316 | * megasas_isr - isr entry point |
| 1317 | */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1318 | static irqreturn_t megasas_isr(int irq, void *devp) |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1319 | { |
| 1320 | return megasas_deplete_reply_queue((struct megasas_instance *)devp, |
| 1321 | DID_OK); |
| 1322 | } |
| 1323 | |
| 1324 | /** |
| 1325 | * megasas_transition_to_ready - Move the FW to READY state |
Sumant Patro | 1341c93 | 2006-01-25 12:02:40 -0800 | [diff] [blame] | 1326 | * @instance: Adapter soft state |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1327 | * |
| 1328 | * During the initialization, FW passes can potentially be in any one of |
| 1329 | * several possible states. If the FW in operational, waiting-for-handshake |
| 1330 | * states, driver must take steps to bring it to ready state. Otherwise, it |
| 1331 | * has to wait for the ready state. |
| 1332 | */ |
| 1333 | static int |
Sumant Patro | 1341c93 | 2006-01-25 12:02:40 -0800 | [diff] [blame] | 1334 | megasas_transition_to_ready(struct megasas_instance* instance) |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1335 | { |
| 1336 | int i; |
| 1337 | u8 max_wait; |
| 1338 | u32 fw_state; |
| 1339 | u32 cur_state; |
| 1340 | |
Sumant Patro | 1341c93 | 2006-01-25 12:02:40 -0800 | [diff] [blame] | 1341 | fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK; |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1342 | |
Sumant Patro | e3bbff9 | 2006-10-03 12:28:49 -0700 | [diff] [blame] | 1343 | if (fw_state != MFI_STATE_READY) |
| 1344 | printk(KERN_INFO "megasas: Waiting for FW to come to ready" |
| 1345 | " state\n"); |
| 1346 | |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1347 | while (fw_state != MFI_STATE_READY) { |
| 1348 | |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1349 | switch (fw_state) { |
| 1350 | |
| 1351 | case MFI_STATE_FAULT: |
| 1352 | |
| 1353 | printk(KERN_DEBUG "megasas: FW in FAULT state!!\n"); |
| 1354 | return -ENODEV; |
| 1355 | |
| 1356 | case MFI_STATE_WAIT_HANDSHAKE: |
| 1357 | /* |
| 1358 | * Set the CLR bit in inbound doorbell |
| 1359 | */ |
Sumant Patro | e3bbff9 | 2006-10-03 12:28:49 -0700 | [diff] [blame] | 1360 | writel(MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, |
Sumant Patro | 1341c93 | 2006-01-25 12:02:40 -0800 | [diff] [blame] | 1361 | &instance->reg_set->inbound_doorbell); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1362 | |
| 1363 | max_wait = 2; |
| 1364 | cur_state = MFI_STATE_WAIT_HANDSHAKE; |
| 1365 | break; |
| 1366 | |
Sumant Patro | e3bbff9 | 2006-10-03 12:28:49 -0700 | [diff] [blame] | 1367 | case MFI_STATE_BOOT_MESSAGE_PENDING: |
| 1368 | writel(MFI_INIT_HOTPLUG, |
| 1369 | &instance->reg_set->inbound_doorbell); |
| 1370 | |
| 1371 | max_wait = 10; |
| 1372 | cur_state = MFI_STATE_BOOT_MESSAGE_PENDING; |
| 1373 | break; |
| 1374 | |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1375 | case MFI_STATE_OPERATIONAL: |
| 1376 | /* |
Sumant Patro | e3bbff9 | 2006-10-03 12:28:49 -0700 | [diff] [blame] | 1377 | * Bring it to READY state; assuming max wait 10 secs |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1378 | */ |
Sumant Patro | b274cab | 2006-10-03 12:52:12 -0700 | [diff] [blame] | 1379 | instance->instancet->disable_intr(instance->reg_set); |
Sumant Patro | e3bbff9 | 2006-10-03 12:28:49 -0700 | [diff] [blame] | 1380 | writel(MFI_RESET_FLAGS, &instance->reg_set->inbound_doorbell); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1381 | |
| 1382 | max_wait = 10; |
| 1383 | cur_state = MFI_STATE_OPERATIONAL; |
| 1384 | break; |
| 1385 | |
| 1386 | case MFI_STATE_UNDEFINED: |
| 1387 | /* |
| 1388 | * This state should not last for more than 2 seconds |
| 1389 | */ |
| 1390 | max_wait = 2; |
| 1391 | cur_state = MFI_STATE_UNDEFINED; |
| 1392 | break; |
| 1393 | |
| 1394 | case MFI_STATE_BB_INIT: |
| 1395 | max_wait = 2; |
| 1396 | cur_state = MFI_STATE_BB_INIT; |
| 1397 | break; |
| 1398 | |
| 1399 | case MFI_STATE_FW_INIT: |
| 1400 | max_wait = 20; |
| 1401 | cur_state = MFI_STATE_FW_INIT; |
| 1402 | break; |
| 1403 | |
| 1404 | case MFI_STATE_FW_INIT_2: |
| 1405 | max_wait = 20; |
| 1406 | cur_state = MFI_STATE_FW_INIT_2; |
| 1407 | break; |
| 1408 | |
| 1409 | case MFI_STATE_DEVICE_SCAN: |
| 1410 | max_wait = 20; |
| 1411 | cur_state = MFI_STATE_DEVICE_SCAN; |
| 1412 | break; |
| 1413 | |
| 1414 | case MFI_STATE_FLUSH_CACHE: |
| 1415 | max_wait = 20; |
| 1416 | cur_state = MFI_STATE_FLUSH_CACHE; |
| 1417 | break; |
| 1418 | |
| 1419 | default: |
| 1420 | printk(KERN_DEBUG "megasas: Unknown state 0x%x\n", |
| 1421 | fw_state); |
| 1422 | return -ENODEV; |
| 1423 | } |
| 1424 | |
| 1425 | /* |
| 1426 | * The cur_state should not last for more than max_wait secs |
| 1427 | */ |
| 1428 | for (i = 0; i < (max_wait * 1000); i++) { |
Sumant Patro | 1341c93 | 2006-01-25 12:02:40 -0800 | [diff] [blame] | 1429 | fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & |
| 1430 | MFI_STATE_MASK ; |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1431 | |
| 1432 | if (fw_state == cur_state) { |
| 1433 | msleep(1); |
| 1434 | } else |
| 1435 | break; |
| 1436 | } |
| 1437 | |
| 1438 | /* |
| 1439 | * Return error if fw_state hasn't changed after max_wait |
| 1440 | */ |
| 1441 | if (fw_state == cur_state) { |
| 1442 | printk(KERN_DEBUG "FW state [%d] hasn't changed " |
| 1443 | "in %d secs\n", fw_state, max_wait); |
| 1444 | return -ENODEV; |
| 1445 | } |
| 1446 | }; |
Sumant Patro | e3bbff9 | 2006-10-03 12:28:49 -0700 | [diff] [blame] | 1447 | printk(KERN_INFO "megasas: FW now in Ready state\n"); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1448 | |
| 1449 | return 0; |
| 1450 | } |
| 1451 | |
| 1452 | /** |
| 1453 | * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool |
| 1454 | * @instance: Adapter soft state |
| 1455 | */ |
| 1456 | static void megasas_teardown_frame_pool(struct megasas_instance *instance) |
| 1457 | { |
| 1458 | int i; |
| 1459 | u32 max_cmd = instance->max_fw_cmds; |
| 1460 | struct megasas_cmd *cmd; |
| 1461 | |
| 1462 | if (!instance->frame_dma_pool) |
| 1463 | return; |
| 1464 | |
| 1465 | /* |
| 1466 | * Return all frames to pool |
| 1467 | */ |
| 1468 | for (i = 0; i < max_cmd; i++) { |
| 1469 | |
| 1470 | cmd = instance->cmd_list[i]; |
| 1471 | |
| 1472 | if (cmd->frame) |
| 1473 | pci_pool_free(instance->frame_dma_pool, cmd->frame, |
| 1474 | cmd->frame_phys_addr); |
| 1475 | |
| 1476 | if (cmd->sense) |
Sumant Patro | e3bbff9 | 2006-10-03 12:28:49 -0700 | [diff] [blame] | 1477 | pci_pool_free(instance->sense_dma_pool, cmd->sense, |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1478 | cmd->sense_phys_addr); |
| 1479 | } |
| 1480 | |
| 1481 | /* |
| 1482 | * Now destroy the pool itself |
| 1483 | */ |
| 1484 | pci_pool_destroy(instance->frame_dma_pool); |
| 1485 | pci_pool_destroy(instance->sense_dma_pool); |
| 1486 | |
| 1487 | instance->frame_dma_pool = NULL; |
| 1488 | instance->sense_dma_pool = NULL; |
| 1489 | } |
| 1490 | |
| 1491 | /** |
| 1492 | * megasas_create_frame_pool - Creates DMA pool for cmd frames |
| 1493 | * @instance: Adapter soft state |
| 1494 | * |
| 1495 | * Each command packet has an embedded DMA memory buffer that is used for |
| 1496 | * filling MFI frame and the SG list that immediately follows the frame. This |
| 1497 | * function creates those DMA memory buffers for each command packet by using |
| 1498 | * PCI pool facility. |
| 1499 | */ |
| 1500 | static int megasas_create_frame_pool(struct megasas_instance *instance) |
| 1501 | { |
| 1502 | int i; |
| 1503 | u32 max_cmd; |
| 1504 | u32 sge_sz; |
| 1505 | u32 sgl_sz; |
| 1506 | u32 total_sz; |
| 1507 | u32 frame_count; |
| 1508 | struct megasas_cmd *cmd; |
| 1509 | |
| 1510 | max_cmd = instance->max_fw_cmds; |
| 1511 | |
| 1512 | /* |
| 1513 | * Size of our frame is 64 bytes for MFI frame, followed by max SG |
| 1514 | * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer |
| 1515 | */ |
| 1516 | sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : |
| 1517 | sizeof(struct megasas_sge32); |
| 1518 | |
| 1519 | /* |
| 1520 | * Calculated the number of 64byte frames required for SGL |
| 1521 | */ |
| 1522 | sgl_sz = sge_sz * instance->max_num_sge; |
| 1523 | frame_count = (sgl_sz + MEGAMFI_FRAME_SIZE - 1) / MEGAMFI_FRAME_SIZE; |
| 1524 | |
| 1525 | /* |
| 1526 | * We need one extra frame for the MFI command |
| 1527 | */ |
| 1528 | frame_count++; |
| 1529 | |
| 1530 | total_sz = MEGAMFI_FRAME_SIZE * frame_count; |
| 1531 | /* |
| 1532 | * Use DMA pool facility provided by PCI layer |
| 1533 | */ |
| 1534 | instance->frame_dma_pool = pci_pool_create("megasas frame pool", |
| 1535 | instance->pdev, total_sz, 64, |
| 1536 | 0); |
| 1537 | |
| 1538 | if (!instance->frame_dma_pool) { |
| 1539 | printk(KERN_DEBUG "megasas: failed to setup frame pool\n"); |
| 1540 | return -ENOMEM; |
| 1541 | } |
| 1542 | |
| 1543 | instance->sense_dma_pool = pci_pool_create("megasas sense pool", |
| 1544 | instance->pdev, 128, 4, 0); |
| 1545 | |
| 1546 | if (!instance->sense_dma_pool) { |
| 1547 | printk(KERN_DEBUG "megasas: failed to setup sense pool\n"); |
| 1548 | |
| 1549 | pci_pool_destroy(instance->frame_dma_pool); |
| 1550 | instance->frame_dma_pool = NULL; |
| 1551 | |
| 1552 | return -ENOMEM; |
| 1553 | } |
| 1554 | |
| 1555 | /* |
| 1556 | * Allocate and attach a frame to each of the commands in cmd_list. |
| 1557 | * By making cmd->index as the context instead of the &cmd, we can |
| 1558 | * always use 32bit context regardless of the architecture |
| 1559 | */ |
| 1560 | for (i = 0; i < max_cmd; i++) { |
| 1561 | |
| 1562 | cmd = instance->cmd_list[i]; |
| 1563 | |
| 1564 | cmd->frame = pci_pool_alloc(instance->frame_dma_pool, |
| 1565 | GFP_KERNEL, &cmd->frame_phys_addr); |
| 1566 | |
| 1567 | cmd->sense = pci_pool_alloc(instance->sense_dma_pool, |
| 1568 | GFP_KERNEL, &cmd->sense_phys_addr); |
| 1569 | |
| 1570 | /* |
| 1571 | * megasas_teardown_frame_pool() takes care of freeing |
| 1572 | * whatever has been allocated |
| 1573 | */ |
| 1574 | if (!cmd->frame || !cmd->sense) { |
| 1575 | printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n"); |
| 1576 | megasas_teardown_frame_pool(instance); |
| 1577 | return -ENOMEM; |
| 1578 | } |
| 1579 | |
| 1580 | cmd->frame->io.context = cmd->index; |
| 1581 | } |
| 1582 | |
| 1583 | return 0; |
| 1584 | } |
| 1585 | |
| 1586 | /** |
| 1587 | * megasas_free_cmds - Free all the cmds in the free cmd pool |
| 1588 | * @instance: Adapter soft state |
| 1589 | */ |
| 1590 | static void megasas_free_cmds(struct megasas_instance *instance) |
| 1591 | { |
| 1592 | int i; |
| 1593 | /* First free the MFI frame pool */ |
| 1594 | megasas_teardown_frame_pool(instance); |
| 1595 | |
| 1596 | /* Free all the commands in the cmd_list */ |
| 1597 | for (i = 0; i < instance->max_fw_cmds; i++) |
| 1598 | kfree(instance->cmd_list[i]); |
| 1599 | |
| 1600 | /* Free the cmd_list buffer itself */ |
| 1601 | kfree(instance->cmd_list); |
| 1602 | instance->cmd_list = NULL; |
| 1603 | |
| 1604 | INIT_LIST_HEAD(&instance->cmd_pool); |
| 1605 | } |
| 1606 | |
| 1607 | /** |
| 1608 | * megasas_alloc_cmds - Allocates the command packets |
| 1609 | * @instance: Adapter soft state |
| 1610 | * |
| 1611 | * Each command that is issued to the FW, whether IO commands from the OS or |
| 1612 | * internal commands like IOCTLs, are wrapped in local data structure called |
| 1613 | * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to |
| 1614 | * the FW. |
| 1615 | * |
| 1616 | * Each frame has a 32-bit field called context (tag). This context is used |
| 1617 | * to get back the megasas_cmd from the frame when a frame gets completed in |
| 1618 | * the ISR. Typically the address of the megasas_cmd itself would be used as |
| 1619 | * the context. But we wanted to keep the differences between 32 and 64 bit |
| 1620 | * systems to the mininum. We always use 32 bit integers for the context. In |
| 1621 | * this driver, the 32 bit values are the indices into an array cmd_list. |
| 1622 | * This array is used only to look up the megasas_cmd given the context. The |
| 1623 | * free commands themselves are maintained in a linked list called cmd_pool. |
| 1624 | */ |
| 1625 | static int megasas_alloc_cmds(struct megasas_instance *instance) |
| 1626 | { |
| 1627 | int i; |
| 1628 | int j; |
| 1629 | u32 max_cmd; |
| 1630 | struct megasas_cmd *cmd; |
| 1631 | |
| 1632 | max_cmd = instance->max_fw_cmds; |
| 1633 | |
| 1634 | /* |
| 1635 | * instance->cmd_list is an array of struct megasas_cmd pointers. |
| 1636 | * Allocate the dynamic array first and then allocate individual |
| 1637 | * commands. |
| 1638 | */ |
Yoann Padioleau | dd00cc4 | 2007-07-19 01:49:03 -0700 | [diff] [blame] | 1639 | instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1640 | |
| 1641 | if (!instance->cmd_list) { |
| 1642 | printk(KERN_DEBUG "megasas: out of memory\n"); |
| 1643 | return -ENOMEM; |
| 1644 | } |
| 1645 | |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1646 | |
| 1647 | for (i = 0; i < max_cmd; i++) { |
| 1648 | instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd), |
| 1649 | GFP_KERNEL); |
| 1650 | |
| 1651 | if (!instance->cmd_list[i]) { |
| 1652 | |
| 1653 | for (j = 0; j < i; j++) |
| 1654 | kfree(instance->cmd_list[j]); |
| 1655 | |
| 1656 | kfree(instance->cmd_list); |
| 1657 | instance->cmd_list = NULL; |
| 1658 | |
| 1659 | return -ENOMEM; |
| 1660 | } |
| 1661 | } |
| 1662 | |
| 1663 | /* |
| 1664 | * Add all the commands to command pool (instance->cmd_pool) |
| 1665 | */ |
| 1666 | for (i = 0; i < max_cmd; i++) { |
| 1667 | cmd = instance->cmd_list[i]; |
| 1668 | memset(cmd, 0, sizeof(struct megasas_cmd)); |
| 1669 | cmd->index = i; |
| 1670 | cmd->instance = instance; |
| 1671 | |
| 1672 | list_add_tail(&cmd->list, &instance->cmd_pool); |
| 1673 | } |
| 1674 | |
| 1675 | /* |
| 1676 | * Create a frame pool and assign one frame to each cmd |
| 1677 | */ |
| 1678 | if (megasas_create_frame_pool(instance)) { |
| 1679 | printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n"); |
| 1680 | megasas_free_cmds(instance); |
| 1681 | } |
| 1682 | |
| 1683 | return 0; |
| 1684 | } |
| 1685 | |
| 1686 | /** |
| 1687 | * megasas_get_controller_info - Returns FW's controller structure |
| 1688 | * @instance: Adapter soft state |
| 1689 | * @ctrl_info: Controller information structure |
| 1690 | * |
| 1691 | * Issues an internal command (DCMD) to get the FW's controller structure. |
| 1692 | * This information is mainly used to find out the maximum IO transfer per |
| 1693 | * command supported by the FW. |
| 1694 | */ |
| 1695 | static int |
| 1696 | megasas_get_ctrl_info(struct megasas_instance *instance, |
| 1697 | struct megasas_ctrl_info *ctrl_info) |
| 1698 | { |
| 1699 | int ret = 0; |
| 1700 | struct megasas_cmd *cmd; |
| 1701 | struct megasas_dcmd_frame *dcmd; |
| 1702 | struct megasas_ctrl_info *ci; |
| 1703 | dma_addr_t ci_h = 0; |
| 1704 | |
| 1705 | cmd = megasas_get_cmd(instance); |
| 1706 | |
| 1707 | if (!cmd) { |
| 1708 | printk(KERN_DEBUG "megasas: Failed to get a free cmd\n"); |
| 1709 | return -ENOMEM; |
| 1710 | } |
| 1711 | |
| 1712 | dcmd = &cmd->frame->dcmd; |
| 1713 | |
| 1714 | ci = pci_alloc_consistent(instance->pdev, |
| 1715 | sizeof(struct megasas_ctrl_info), &ci_h); |
| 1716 | |
| 1717 | if (!ci) { |
| 1718 | printk(KERN_DEBUG "Failed to alloc mem for ctrl info\n"); |
| 1719 | megasas_return_cmd(instance, cmd); |
| 1720 | return -ENOMEM; |
| 1721 | } |
| 1722 | |
| 1723 | memset(ci, 0, sizeof(*ci)); |
| 1724 | memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); |
| 1725 | |
| 1726 | dcmd->cmd = MFI_CMD_DCMD; |
| 1727 | dcmd->cmd_status = 0xFF; |
| 1728 | dcmd->sge_count = 1; |
| 1729 | dcmd->flags = MFI_FRAME_DIR_READ; |
| 1730 | dcmd->timeout = 0; |
| 1731 | dcmd->data_xfer_len = sizeof(struct megasas_ctrl_info); |
| 1732 | dcmd->opcode = MR_DCMD_CTRL_GET_INFO; |
| 1733 | dcmd->sgl.sge32[0].phys_addr = ci_h; |
| 1734 | dcmd->sgl.sge32[0].length = sizeof(struct megasas_ctrl_info); |
| 1735 | |
| 1736 | if (!megasas_issue_polled(instance, cmd)) { |
| 1737 | ret = 0; |
| 1738 | memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info)); |
| 1739 | } else { |
| 1740 | ret = -1; |
| 1741 | } |
| 1742 | |
| 1743 | pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info), |
| 1744 | ci, ci_h); |
| 1745 | |
| 1746 | megasas_return_cmd(instance, cmd); |
| 1747 | return ret; |
| 1748 | } |
| 1749 | |
| 1750 | /** |
Sumant Patro | 5d018ad | 2006-10-03 13:13:18 -0700 | [diff] [blame] | 1751 | * megasas_complete_cmd_dpc - Returns FW's controller structure |
| 1752 | * @instance_addr: Address of adapter soft state |
| 1753 | * |
| 1754 | * Tasklet to complete cmds |
| 1755 | */ |
Adrian Bunk | b448de4 | 2006-11-20 03:23:49 +0100 | [diff] [blame] | 1756 | static void megasas_complete_cmd_dpc(unsigned long instance_addr) |
Sumant Patro | 5d018ad | 2006-10-03 13:13:18 -0700 | [diff] [blame] | 1757 | { |
| 1758 | u32 producer; |
| 1759 | u32 consumer; |
| 1760 | u32 context; |
| 1761 | struct megasas_cmd *cmd; |
| 1762 | struct megasas_instance *instance = (struct megasas_instance *)instance_addr; |
Sumant Patro | 05e9ebb | 2007-05-17 05:47:51 -0700 | [diff] [blame] | 1763 | unsigned long flags; |
Sumant Patro | 5d018ad | 2006-10-03 13:13:18 -0700 | [diff] [blame] | 1764 | |
Sumant Patro | af37acf | 2007-02-14 12:34:46 -0800 | [diff] [blame] | 1765 | /* If we have already declared adapter dead, donot complete cmds */ |
| 1766 | if (instance->hw_crit_error) |
| 1767 | return; |
| 1768 | |
Sumant Patro | 5d018ad | 2006-10-03 13:13:18 -0700 | [diff] [blame] | 1769 | producer = *instance->producer; |
| 1770 | consumer = *instance->consumer; |
| 1771 | |
| 1772 | while (consumer != producer) { |
| 1773 | context = instance->reply_queue[consumer]; |
| 1774 | |
| 1775 | cmd = instance->cmd_list[context]; |
| 1776 | |
| 1777 | megasas_complete_cmd(instance, cmd, DID_OK); |
| 1778 | |
| 1779 | consumer++; |
| 1780 | if (consumer == (instance->max_fw_cmds + 1)) { |
| 1781 | consumer = 0; |
| 1782 | } |
| 1783 | } |
| 1784 | |
| 1785 | *instance->consumer = producer; |
Sumant Patro | 05e9ebb | 2007-05-17 05:47:51 -0700 | [diff] [blame] | 1786 | |
| 1787 | /* |
| 1788 | * Check if we can restore can_queue |
| 1789 | */ |
| 1790 | if (instance->flag & MEGASAS_FW_BUSY |
| 1791 | && time_after(jiffies, instance->last_time + 5 * HZ) |
| 1792 | && atomic_read(&instance->fw_outstanding) < 17) { |
| 1793 | |
| 1794 | spin_lock_irqsave(instance->host->host_lock, flags); |
| 1795 | instance->flag &= ~MEGASAS_FW_BUSY; |
| 1796 | instance->host->can_queue = |
| 1797 | instance->max_fw_cmds - MEGASAS_INT_CMDS; |
| 1798 | |
| 1799 | spin_unlock_irqrestore(instance->host->host_lock, flags); |
| 1800 | } |
| 1801 | |
Sumant Patro | 5d018ad | 2006-10-03 13:13:18 -0700 | [diff] [blame] | 1802 | } |
| 1803 | |
| 1804 | /** |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1805 | * megasas_init_mfi - Initializes the FW |
| 1806 | * @instance: Adapter soft state |
| 1807 | * |
| 1808 | * This is the main function for initializing MFI firmware. |
| 1809 | */ |
| 1810 | static int megasas_init_mfi(struct megasas_instance *instance) |
| 1811 | { |
| 1812 | u32 context_sz; |
| 1813 | u32 reply_q_sz; |
| 1814 | u32 max_sectors_1; |
| 1815 | u32 max_sectors_2; |
| 1816 | struct megasas_register_set __iomem *reg_set; |
| 1817 | |
| 1818 | struct megasas_cmd *cmd; |
| 1819 | struct megasas_ctrl_info *ctrl_info; |
| 1820 | |
| 1821 | struct megasas_init_frame *init_frame; |
| 1822 | struct megasas_init_queue_info *initq_info; |
| 1823 | dma_addr_t init_frame_h; |
| 1824 | dma_addr_t initq_info_h; |
| 1825 | |
| 1826 | /* |
| 1827 | * Map the message registers |
| 1828 | */ |
| 1829 | instance->base_addr = pci_resource_start(instance->pdev, 0); |
| 1830 | |
| 1831 | if (pci_request_regions(instance->pdev, "megasas: LSI Logic")) { |
| 1832 | printk(KERN_DEBUG "megasas: IO memory region busy!\n"); |
| 1833 | return -EBUSY; |
| 1834 | } |
| 1835 | |
| 1836 | instance->reg_set = ioremap_nocache(instance->base_addr, 8192); |
| 1837 | |
| 1838 | if (!instance->reg_set) { |
| 1839 | printk(KERN_DEBUG "megasas: Failed to map IO mem\n"); |
| 1840 | goto fail_ioremap; |
| 1841 | } |
| 1842 | |
| 1843 | reg_set = instance->reg_set; |
| 1844 | |
Sumant Patro | f9876f0 | 2006-02-03 15:34:35 -0800 | [diff] [blame] | 1845 | switch(instance->pdev->device) |
| 1846 | { |
| 1847 | case PCI_DEVICE_ID_LSI_SAS1078R: |
| 1848 | instance->instancet = &megasas_instance_template_ppc; |
| 1849 | break; |
| 1850 | case PCI_DEVICE_ID_LSI_SAS1064R: |
| 1851 | case PCI_DEVICE_ID_DELL_PERC5: |
| 1852 | default: |
| 1853 | instance->instancet = &megasas_instance_template_xscale; |
| 1854 | break; |
| 1855 | } |
Sumant Patro | 1341c93 | 2006-01-25 12:02:40 -0800 | [diff] [blame] | 1856 | |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1857 | /* |
| 1858 | * We expect the FW state to be READY |
| 1859 | */ |
Sumant Patro | 1341c93 | 2006-01-25 12:02:40 -0800 | [diff] [blame] | 1860 | if (megasas_transition_to_ready(instance)) |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1861 | goto fail_ready_state; |
| 1862 | |
| 1863 | /* |
| 1864 | * Get various operational parameters from status register |
| 1865 | */ |
Sumant Patro | 1341c93 | 2006-01-25 12:02:40 -0800 | [diff] [blame] | 1866 | instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF; |
Sumant Patro | e3bbff9 | 2006-10-03 12:28:49 -0700 | [diff] [blame] | 1867 | /* |
| 1868 | * Reduce the max supported cmds by 1. This is to ensure that the |
| 1869 | * reply_q_sz (1 more than the max cmd that driver may send) |
| 1870 | * does not exceed max cmds that the FW can support |
| 1871 | */ |
| 1872 | instance->max_fw_cmds = instance->max_fw_cmds-1; |
Sumant Patro | 1341c93 | 2006-01-25 12:02:40 -0800 | [diff] [blame] | 1873 | instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >> |
| 1874 | 0x10; |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1875 | /* |
| 1876 | * Create a pool of commands |
| 1877 | */ |
| 1878 | if (megasas_alloc_cmds(instance)) |
| 1879 | goto fail_alloc_cmds; |
| 1880 | |
| 1881 | /* |
| 1882 | * Allocate memory for reply queue. Length of reply queue should |
| 1883 | * be _one_ more than the maximum commands handled by the firmware. |
| 1884 | * |
| 1885 | * Note: When FW completes commands, it places corresponding contex |
| 1886 | * values in this circular reply queue. This circular queue is a fairly |
| 1887 | * typical producer-consumer queue. FW is the producer (of completed |
| 1888 | * commands) and the driver is the consumer. |
| 1889 | */ |
| 1890 | context_sz = sizeof(u32); |
| 1891 | reply_q_sz = context_sz * (instance->max_fw_cmds + 1); |
| 1892 | |
| 1893 | instance->reply_queue = pci_alloc_consistent(instance->pdev, |
| 1894 | reply_q_sz, |
| 1895 | &instance->reply_queue_h); |
| 1896 | |
| 1897 | if (!instance->reply_queue) { |
| 1898 | printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n"); |
| 1899 | goto fail_reply_queue; |
| 1900 | } |
| 1901 | |
| 1902 | /* |
| 1903 | * Prepare a init frame. Note the init frame points to queue info |
| 1904 | * structure. Each frame has SGL allocated after first 64 bytes. For |
| 1905 | * this frame - since we don't need any SGL - we use SGL's space as |
| 1906 | * queue info structure |
| 1907 | * |
| 1908 | * We will not get a NULL command below. We just created the pool. |
| 1909 | */ |
| 1910 | cmd = megasas_get_cmd(instance); |
| 1911 | |
| 1912 | init_frame = (struct megasas_init_frame *)cmd->frame; |
| 1913 | initq_info = (struct megasas_init_queue_info *) |
| 1914 | ((unsigned long)init_frame + 64); |
| 1915 | |
| 1916 | init_frame_h = cmd->frame_phys_addr; |
| 1917 | initq_info_h = init_frame_h + 64; |
| 1918 | |
| 1919 | memset(init_frame, 0, MEGAMFI_FRAME_SIZE); |
| 1920 | memset(initq_info, 0, sizeof(struct megasas_init_queue_info)); |
| 1921 | |
| 1922 | initq_info->reply_queue_entries = instance->max_fw_cmds + 1; |
| 1923 | initq_info->reply_queue_start_phys_addr_lo = instance->reply_queue_h; |
| 1924 | |
| 1925 | initq_info->producer_index_phys_addr_lo = instance->producer_h; |
| 1926 | initq_info->consumer_index_phys_addr_lo = instance->consumer_h; |
| 1927 | |
| 1928 | init_frame->cmd = MFI_CMD_INIT; |
| 1929 | init_frame->cmd_status = 0xFF; |
| 1930 | init_frame->queue_info_new_phys_addr_lo = initq_info_h; |
| 1931 | |
| 1932 | init_frame->data_xfer_len = sizeof(struct megasas_init_queue_info); |
| 1933 | |
| 1934 | /* |
Sumant Patro | 0e98936 | 2006-06-20 15:32:37 -0700 | [diff] [blame] | 1935 | * disable the intr before firing the init frame to FW |
| 1936 | */ |
Sumant Patro | b274cab | 2006-10-03 12:52:12 -0700 | [diff] [blame] | 1937 | instance->instancet->disable_intr(instance->reg_set); |
Sumant Patro | 0e98936 | 2006-06-20 15:32:37 -0700 | [diff] [blame] | 1938 | |
| 1939 | /* |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1940 | * Issue the init frame in polled mode |
| 1941 | */ |
| 1942 | if (megasas_issue_polled(instance, cmd)) { |
| 1943 | printk(KERN_DEBUG "megasas: Failed to init firmware\n"); |
| 1944 | goto fail_fw_init; |
| 1945 | } |
| 1946 | |
| 1947 | megasas_return_cmd(instance, cmd); |
| 1948 | |
| 1949 | ctrl_info = kmalloc(sizeof(struct megasas_ctrl_info), GFP_KERNEL); |
| 1950 | |
| 1951 | /* |
| 1952 | * Compute the max allowed sectors per IO: The controller info has two |
| 1953 | * limits on max sectors. Driver should use the minimum of these two. |
| 1954 | * |
| 1955 | * 1 << stripe_sz_ops.min = max sectors per strip |
| 1956 | * |
| 1957 | * Note that older firmwares ( < FW ver 30) didn't report information |
| 1958 | * to calculate max_sectors_1. So the number ended up as zero always. |
| 1959 | */ |
| 1960 | if (ctrl_info && !megasas_get_ctrl_info(instance, ctrl_info)) { |
| 1961 | |
| 1962 | max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) * |
| 1963 | ctrl_info->max_strips_per_io; |
| 1964 | max_sectors_2 = ctrl_info->max_request_size; |
| 1965 | |
| 1966 | instance->max_sectors_per_req = (max_sectors_1 < max_sectors_2) |
| 1967 | ? max_sectors_1 : max_sectors_2; |
| 1968 | } else |
| 1969 | instance->max_sectors_per_req = instance->max_num_sge * |
| 1970 | PAGE_SIZE / 512; |
| 1971 | |
| 1972 | kfree(ctrl_info); |
| 1973 | |
Sumant Patro | 5d018ad | 2006-10-03 13:13:18 -0700 | [diff] [blame] | 1974 | /* |
| 1975 | * Setup tasklet for cmd completion |
| 1976 | */ |
| 1977 | |
| 1978 | tasklet_init(&instance->isr_tasklet, megasas_complete_cmd_dpc, |
| 1979 | (unsigned long)instance); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 1980 | return 0; |
| 1981 | |
| 1982 | fail_fw_init: |
| 1983 | megasas_return_cmd(instance, cmd); |
| 1984 | |
| 1985 | pci_free_consistent(instance->pdev, reply_q_sz, |
| 1986 | instance->reply_queue, instance->reply_queue_h); |
| 1987 | fail_reply_queue: |
| 1988 | megasas_free_cmds(instance); |
| 1989 | |
| 1990 | fail_alloc_cmds: |
| 1991 | fail_ready_state: |
| 1992 | iounmap(instance->reg_set); |
| 1993 | |
| 1994 | fail_ioremap: |
| 1995 | pci_release_regions(instance->pdev); |
| 1996 | |
| 1997 | return -EINVAL; |
| 1998 | } |
| 1999 | |
| 2000 | /** |
| 2001 | * megasas_release_mfi - Reverses the FW initialization |
| 2002 | * @intance: Adapter soft state |
| 2003 | */ |
| 2004 | static void megasas_release_mfi(struct megasas_instance *instance) |
| 2005 | { |
| 2006 | u32 reply_q_sz = sizeof(u32) * (instance->max_fw_cmds + 1); |
| 2007 | |
| 2008 | pci_free_consistent(instance->pdev, reply_q_sz, |
| 2009 | instance->reply_queue, instance->reply_queue_h); |
| 2010 | |
| 2011 | megasas_free_cmds(instance); |
| 2012 | |
| 2013 | iounmap(instance->reg_set); |
| 2014 | |
| 2015 | pci_release_regions(instance->pdev); |
| 2016 | } |
| 2017 | |
| 2018 | /** |
| 2019 | * megasas_get_seq_num - Gets latest event sequence numbers |
| 2020 | * @instance: Adapter soft state |
| 2021 | * @eli: FW event log sequence numbers information |
| 2022 | * |
| 2023 | * FW maintains a log of all events in a non-volatile area. Upper layers would |
| 2024 | * usually find out the latest sequence number of the events, the seq number at |
| 2025 | * the boot etc. They would "read" all the events below the latest seq number |
| 2026 | * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq |
| 2027 | * number), they would subsribe to AEN (asynchronous event notification) and |
| 2028 | * wait for the events to happen. |
| 2029 | */ |
| 2030 | static int |
| 2031 | megasas_get_seq_num(struct megasas_instance *instance, |
| 2032 | struct megasas_evt_log_info *eli) |
| 2033 | { |
| 2034 | struct megasas_cmd *cmd; |
| 2035 | struct megasas_dcmd_frame *dcmd; |
| 2036 | struct megasas_evt_log_info *el_info; |
| 2037 | dma_addr_t el_info_h = 0; |
| 2038 | |
| 2039 | cmd = megasas_get_cmd(instance); |
| 2040 | |
| 2041 | if (!cmd) { |
| 2042 | return -ENOMEM; |
| 2043 | } |
| 2044 | |
| 2045 | dcmd = &cmd->frame->dcmd; |
| 2046 | el_info = pci_alloc_consistent(instance->pdev, |
| 2047 | sizeof(struct megasas_evt_log_info), |
| 2048 | &el_info_h); |
| 2049 | |
| 2050 | if (!el_info) { |
| 2051 | megasas_return_cmd(instance, cmd); |
| 2052 | return -ENOMEM; |
| 2053 | } |
| 2054 | |
| 2055 | memset(el_info, 0, sizeof(*el_info)); |
| 2056 | memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); |
| 2057 | |
| 2058 | dcmd->cmd = MFI_CMD_DCMD; |
| 2059 | dcmd->cmd_status = 0x0; |
| 2060 | dcmd->sge_count = 1; |
| 2061 | dcmd->flags = MFI_FRAME_DIR_READ; |
| 2062 | dcmd->timeout = 0; |
| 2063 | dcmd->data_xfer_len = sizeof(struct megasas_evt_log_info); |
| 2064 | dcmd->opcode = MR_DCMD_CTRL_EVENT_GET_INFO; |
| 2065 | dcmd->sgl.sge32[0].phys_addr = el_info_h; |
| 2066 | dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_log_info); |
| 2067 | |
| 2068 | megasas_issue_blocked_cmd(instance, cmd); |
| 2069 | |
| 2070 | /* |
| 2071 | * Copy the data back into callers buffer |
| 2072 | */ |
| 2073 | memcpy(eli, el_info, sizeof(struct megasas_evt_log_info)); |
| 2074 | |
| 2075 | pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info), |
| 2076 | el_info, el_info_h); |
| 2077 | |
| 2078 | megasas_return_cmd(instance, cmd); |
| 2079 | |
| 2080 | return 0; |
| 2081 | } |
| 2082 | |
| 2083 | /** |
| 2084 | * megasas_register_aen - Registers for asynchronous event notification |
| 2085 | * @instance: Adapter soft state |
| 2086 | * @seq_num: The starting sequence number |
| 2087 | * @class_locale: Class of the event |
| 2088 | * |
| 2089 | * This function subscribes for AEN for events beyond the @seq_num. It requests |
| 2090 | * to be notified if and only if the event is of type @class_locale |
| 2091 | */ |
| 2092 | static int |
| 2093 | megasas_register_aen(struct megasas_instance *instance, u32 seq_num, |
| 2094 | u32 class_locale_word) |
| 2095 | { |
| 2096 | int ret_val; |
| 2097 | struct megasas_cmd *cmd; |
| 2098 | struct megasas_dcmd_frame *dcmd; |
| 2099 | union megasas_evt_class_locale curr_aen; |
| 2100 | union megasas_evt_class_locale prev_aen; |
| 2101 | |
| 2102 | /* |
| 2103 | * If there an AEN pending already (aen_cmd), check if the |
| 2104 | * class_locale of that pending AEN is inclusive of the new |
| 2105 | * AEN request we currently have. If it is, then we don't have |
| 2106 | * to do anything. In other words, whichever events the current |
| 2107 | * AEN request is subscribing to, have already been subscribed |
| 2108 | * to. |
| 2109 | * |
| 2110 | * If the old_cmd is _not_ inclusive, then we have to abort |
| 2111 | * that command, form a class_locale that is superset of both |
| 2112 | * old and current and re-issue to the FW |
| 2113 | */ |
| 2114 | |
| 2115 | curr_aen.word = class_locale_word; |
| 2116 | |
| 2117 | if (instance->aen_cmd) { |
| 2118 | |
| 2119 | prev_aen.word = instance->aen_cmd->frame->dcmd.mbox.w[1]; |
| 2120 | |
| 2121 | /* |
| 2122 | * A class whose enum value is smaller is inclusive of all |
| 2123 | * higher values. If a PROGRESS (= -1) was previously |
| 2124 | * registered, then a new registration requests for higher |
| 2125 | * classes need not be sent to FW. They are automatically |
| 2126 | * included. |
| 2127 | * |
| 2128 | * Locale numbers don't have such hierarchy. They are bitmap |
| 2129 | * values |
| 2130 | */ |
| 2131 | if ((prev_aen.members.class <= curr_aen.members.class) && |
| 2132 | !((prev_aen.members.locale & curr_aen.members.locale) ^ |
| 2133 | curr_aen.members.locale)) { |
| 2134 | /* |
| 2135 | * Previously issued event registration includes |
| 2136 | * current request. Nothing to do. |
| 2137 | */ |
| 2138 | return 0; |
| 2139 | } else { |
| 2140 | curr_aen.members.locale |= prev_aen.members.locale; |
| 2141 | |
| 2142 | if (prev_aen.members.class < curr_aen.members.class) |
| 2143 | curr_aen.members.class = prev_aen.members.class; |
| 2144 | |
| 2145 | instance->aen_cmd->abort_aen = 1; |
| 2146 | ret_val = megasas_issue_blocked_abort_cmd(instance, |
| 2147 | instance-> |
| 2148 | aen_cmd); |
| 2149 | |
| 2150 | if (ret_val) { |
| 2151 | printk(KERN_DEBUG "megasas: Failed to abort " |
| 2152 | "previous AEN command\n"); |
| 2153 | return ret_val; |
| 2154 | } |
| 2155 | } |
| 2156 | } |
| 2157 | |
| 2158 | cmd = megasas_get_cmd(instance); |
| 2159 | |
| 2160 | if (!cmd) |
| 2161 | return -ENOMEM; |
| 2162 | |
| 2163 | dcmd = &cmd->frame->dcmd; |
| 2164 | |
| 2165 | memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail)); |
| 2166 | |
| 2167 | /* |
| 2168 | * Prepare DCMD for aen registration |
| 2169 | */ |
| 2170 | memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); |
| 2171 | |
| 2172 | dcmd->cmd = MFI_CMD_DCMD; |
| 2173 | dcmd->cmd_status = 0x0; |
| 2174 | dcmd->sge_count = 1; |
| 2175 | dcmd->flags = MFI_FRAME_DIR_READ; |
| 2176 | dcmd->timeout = 0; |
| 2177 | dcmd->data_xfer_len = sizeof(struct megasas_evt_detail); |
| 2178 | dcmd->opcode = MR_DCMD_CTRL_EVENT_WAIT; |
| 2179 | dcmd->mbox.w[0] = seq_num; |
| 2180 | dcmd->mbox.w[1] = curr_aen.word; |
| 2181 | dcmd->sgl.sge32[0].phys_addr = (u32) instance->evt_detail_h; |
| 2182 | dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_detail); |
| 2183 | |
| 2184 | /* |
| 2185 | * Store reference to the cmd used to register for AEN. When an |
| 2186 | * application wants us to register for AEN, we have to abort this |
| 2187 | * cmd and re-register with a new EVENT LOCALE supplied by that app |
| 2188 | */ |
| 2189 | instance->aen_cmd = cmd; |
| 2190 | |
| 2191 | /* |
| 2192 | * Issue the aen registration frame |
| 2193 | */ |
Sumant Patro | 1341c93 | 2006-01-25 12:02:40 -0800 | [diff] [blame] | 2194 | instance->instancet->fire_cmd(cmd->frame_phys_addr ,0,instance->reg_set); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 2195 | |
| 2196 | return 0; |
| 2197 | } |
| 2198 | |
| 2199 | /** |
| 2200 | * megasas_start_aen - Subscribes to AEN during driver load time |
| 2201 | * @instance: Adapter soft state |
| 2202 | */ |
| 2203 | static int megasas_start_aen(struct megasas_instance *instance) |
| 2204 | { |
| 2205 | struct megasas_evt_log_info eli; |
| 2206 | union megasas_evt_class_locale class_locale; |
| 2207 | |
| 2208 | /* |
| 2209 | * Get the latest sequence number from FW |
| 2210 | */ |
| 2211 | memset(&eli, 0, sizeof(eli)); |
| 2212 | |
| 2213 | if (megasas_get_seq_num(instance, &eli)) |
| 2214 | return -1; |
| 2215 | |
| 2216 | /* |
| 2217 | * Register AEN with FW for latest sequence number plus 1 |
| 2218 | */ |
| 2219 | class_locale.members.reserved = 0; |
| 2220 | class_locale.members.locale = MR_EVT_LOCALE_ALL; |
| 2221 | class_locale.members.class = MR_EVT_CLASS_DEBUG; |
| 2222 | |
| 2223 | return megasas_register_aen(instance, eli.newest_seq_num + 1, |
| 2224 | class_locale.word); |
| 2225 | } |
| 2226 | |
| 2227 | /** |
| 2228 | * megasas_io_attach - Attaches this driver to SCSI mid-layer |
| 2229 | * @instance: Adapter soft state |
| 2230 | */ |
| 2231 | static int megasas_io_attach(struct megasas_instance *instance) |
| 2232 | { |
| 2233 | struct Scsi_Host *host = instance->host; |
| 2234 | |
| 2235 | /* |
| 2236 | * Export parameters required by SCSI mid-layer |
| 2237 | */ |
| 2238 | host->irq = instance->pdev->irq; |
| 2239 | host->unique_id = instance->unique_id; |
| 2240 | host->can_queue = instance->max_fw_cmds - MEGASAS_INT_CMDS; |
| 2241 | host->this_id = instance->init_id; |
| 2242 | host->sg_tablesize = instance->max_num_sge; |
| 2243 | host->max_sectors = instance->max_sectors_per_req; |
| 2244 | host->cmd_per_lun = 128; |
| 2245 | host->max_channel = MEGASAS_MAX_CHANNELS - 1; |
| 2246 | host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL; |
| 2247 | host->max_lun = MEGASAS_MAX_LUN; |
Joshua Giles | 122da30 | 2006-02-03 15:34:17 -0800 | [diff] [blame] | 2248 | host->max_cmd_len = 16; |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 2249 | |
| 2250 | /* |
| 2251 | * Notify the mid-layer about the new controller |
| 2252 | */ |
| 2253 | if (scsi_add_host(host, &instance->pdev->dev)) { |
| 2254 | printk(KERN_DEBUG "megasas: scsi_add_host failed\n"); |
| 2255 | return -ENODEV; |
| 2256 | } |
| 2257 | |
| 2258 | /* |
| 2259 | * Trigger SCSI to scan our drives |
| 2260 | */ |
| 2261 | scsi_scan_host(host); |
| 2262 | return 0; |
| 2263 | } |
| 2264 | |
| 2265 | /** |
| 2266 | * megasas_probe_one - PCI hotplug entry point |
| 2267 | * @pdev: PCI device structure |
| 2268 | * @id: PCI ids of supported hotplugged adapter |
| 2269 | */ |
| 2270 | static int __devinit |
| 2271 | megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) |
| 2272 | { |
| 2273 | int rval; |
| 2274 | struct Scsi_Host *host; |
| 2275 | struct megasas_instance *instance; |
| 2276 | |
| 2277 | /* |
| 2278 | * Announce PCI information |
| 2279 | */ |
| 2280 | printk(KERN_INFO "megasas: %#4.04x:%#4.04x:%#4.04x:%#4.04x: ", |
| 2281 | pdev->vendor, pdev->device, pdev->subsystem_vendor, |
| 2282 | pdev->subsystem_device); |
| 2283 | |
| 2284 | printk("bus %d:slot %d:func %d\n", |
| 2285 | pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn)); |
| 2286 | |
| 2287 | /* |
| 2288 | * PCI prepping: enable device set bus mastering and dma mask |
| 2289 | */ |
| 2290 | rval = pci_enable_device(pdev); |
| 2291 | |
| 2292 | if (rval) { |
| 2293 | return rval; |
| 2294 | } |
| 2295 | |
| 2296 | pci_set_master(pdev); |
| 2297 | |
| 2298 | /* |
| 2299 | * All our contollers are capable of performing 64-bit DMA |
| 2300 | */ |
| 2301 | if (IS_DMA64) { |
| 2302 | if (pci_set_dma_mask(pdev, DMA_64BIT_MASK) != 0) { |
| 2303 | |
| 2304 | if (pci_set_dma_mask(pdev, DMA_32BIT_MASK) != 0) |
| 2305 | goto fail_set_dma_mask; |
| 2306 | } |
| 2307 | } else { |
| 2308 | if (pci_set_dma_mask(pdev, DMA_32BIT_MASK) != 0) |
| 2309 | goto fail_set_dma_mask; |
| 2310 | } |
| 2311 | |
| 2312 | host = scsi_host_alloc(&megasas_template, |
| 2313 | sizeof(struct megasas_instance)); |
| 2314 | |
| 2315 | if (!host) { |
| 2316 | printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n"); |
| 2317 | goto fail_alloc_instance; |
| 2318 | } |
| 2319 | |
| 2320 | instance = (struct megasas_instance *)host->hostdata; |
| 2321 | memset(instance, 0, sizeof(*instance)); |
| 2322 | |
| 2323 | instance->producer = pci_alloc_consistent(pdev, sizeof(u32), |
| 2324 | &instance->producer_h); |
| 2325 | instance->consumer = pci_alloc_consistent(pdev, sizeof(u32), |
| 2326 | &instance->consumer_h); |
| 2327 | |
| 2328 | if (!instance->producer || !instance->consumer) { |
| 2329 | printk(KERN_DEBUG "megasas: Failed to allocate memory for " |
| 2330 | "producer, consumer\n"); |
| 2331 | goto fail_alloc_dma_buf; |
| 2332 | } |
| 2333 | |
| 2334 | *instance->producer = 0; |
| 2335 | *instance->consumer = 0; |
| 2336 | |
| 2337 | instance->evt_detail = pci_alloc_consistent(pdev, |
| 2338 | sizeof(struct |
| 2339 | megasas_evt_detail), |
| 2340 | &instance->evt_detail_h); |
| 2341 | |
| 2342 | if (!instance->evt_detail) { |
| 2343 | printk(KERN_DEBUG "megasas: Failed to allocate memory for " |
| 2344 | "event detail structure\n"); |
| 2345 | goto fail_alloc_dma_buf; |
| 2346 | } |
| 2347 | |
| 2348 | /* |
| 2349 | * Initialize locks and queues |
| 2350 | */ |
| 2351 | INIT_LIST_HEAD(&instance->cmd_pool); |
| 2352 | |
Sumant Patro | e4a082c | 2006-05-30 12:03:37 -0700 | [diff] [blame] | 2353 | atomic_set(&instance->fw_outstanding,0); |
| 2354 | |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 2355 | init_waitqueue_head(&instance->int_cmd_wait_q); |
| 2356 | init_waitqueue_head(&instance->abort_cmd_wait_q); |
| 2357 | |
| 2358 | spin_lock_init(&instance->cmd_pool_lock); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 2359 | |
| 2360 | sema_init(&instance->aen_mutex, 1); |
| 2361 | sema_init(&instance->ioctl_sem, MEGASAS_INT_CMDS); |
| 2362 | |
| 2363 | /* |
| 2364 | * Initialize PCI related and misc parameters |
| 2365 | */ |
| 2366 | instance->pdev = pdev; |
| 2367 | instance->host = host; |
| 2368 | instance->unique_id = pdev->bus->number << 8 | pdev->devfn; |
| 2369 | instance->init_id = MEGASAS_DEFAULT_INIT_ID; |
| 2370 | |
Sumant Patro | 658dced | 2006-10-03 13:09:14 -0700 | [diff] [blame] | 2371 | megasas_dbg_lvl = 0; |
Sumant Patro | 05e9ebb | 2007-05-17 05:47:51 -0700 | [diff] [blame] | 2372 | instance->flag = 0; |
| 2373 | instance->last_time = 0; |
Sumant Patro | 658dced | 2006-10-03 13:09:14 -0700 | [diff] [blame] | 2374 | |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 2375 | /* |
| 2376 | * Initialize MFI Firmware |
| 2377 | */ |
| 2378 | if (megasas_init_mfi(instance)) |
| 2379 | goto fail_init_mfi; |
| 2380 | |
| 2381 | /* |
| 2382 | * Register IRQ |
| 2383 | */ |
Thomas Gleixner | 1d6f359 | 2006-07-01 19:29:42 -0700 | [diff] [blame] | 2384 | if (request_irq(pdev->irq, megasas_isr, IRQF_SHARED, "megasas", instance)) { |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 2385 | printk(KERN_DEBUG "megasas: Failed to register IRQ\n"); |
| 2386 | goto fail_irq; |
| 2387 | } |
| 2388 | |
Sumant Patro | 1341c93 | 2006-01-25 12:02:40 -0800 | [diff] [blame] | 2389 | instance->instancet->enable_intr(instance->reg_set); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 2390 | |
| 2391 | /* |
| 2392 | * Store instance in PCI softstate |
| 2393 | */ |
| 2394 | pci_set_drvdata(pdev, instance); |
| 2395 | |
| 2396 | /* |
| 2397 | * Add this controller to megasas_mgmt_info structure so that it |
| 2398 | * can be exported to management applications |
| 2399 | */ |
| 2400 | megasas_mgmt_info.count++; |
| 2401 | megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance; |
| 2402 | megasas_mgmt_info.max_index++; |
| 2403 | |
| 2404 | /* |
| 2405 | * Initiate AEN (Asynchronous Event Notification) |
| 2406 | */ |
| 2407 | if (megasas_start_aen(instance)) { |
| 2408 | printk(KERN_DEBUG "megasas: start aen failed\n"); |
| 2409 | goto fail_start_aen; |
| 2410 | } |
| 2411 | |
| 2412 | /* |
| 2413 | * Register with SCSI mid-layer |
| 2414 | */ |
| 2415 | if (megasas_io_attach(instance)) |
| 2416 | goto fail_io_attach; |
| 2417 | |
| 2418 | return 0; |
| 2419 | |
| 2420 | fail_start_aen: |
| 2421 | fail_io_attach: |
| 2422 | megasas_mgmt_info.count--; |
| 2423 | megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL; |
| 2424 | megasas_mgmt_info.max_index--; |
| 2425 | |
| 2426 | pci_set_drvdata(pdev, NULL); |
Sumant Patro | b274cab | 2006-10-03 12:52:12 -0700 | [diff] [blame] | 2427 | instance->instancet->disable_intr(instance->reg_set); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 2428 | free_irq(instance->pdev->irq, instance); |
| 2429 | |
| 2430 | megasas_release_mfi(instance); |
| 2431 | |
| 2432 | fail_irq: |
| 2433 | fail_init_mfi: |
| 2434 | fail_alloc_dma_buf: |
| 2435 | if (instance->evt_detail) |
| 2436 | pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), |
| 2437 | instance->evt_detail, |
| 2438 | instance->evt_detail_h); |
| 2439 | |
| 2440 | if (instance->producer) |
| 2441 | pci_free_consistent(pdev, sizeof(u32), instance->producer, |
| 2442 | instance->producer_h); |
| 2443 | if (instance->consumer) |
| 2444 | pci_free_consistent(pdev, sizeof(u32), instance->consumer, |
| 2445 | instance->consumer_h); |
| 2446 | scsi_host_put(host); |
| 2447 | |
| 2448 | fail_alloc_instance: |
| 2449 | fail_set_dma_mask: |
| 2450 | pci_disable_device(pdev); |
| 2451 | |
| 2452 | return -ENODEV; |
| 2453 | } |
| 2454 | |
| 2455 | /** |
| 2456 | * megasas_flush_cache - Requests FW to flush all its caches |
| 2457 | * @instance: Adapter soft state |
| 2458 | */ |
| 2459 | static void megasas_flush_cache(struct megasas_instance *instance) |
| 2460 | { |
| 2461 | struct megasas_cmd *cmd; |
| 2462 | struct megasas_dcmd_frame *dcmd; |
| 2463 | |
| 2464 | cmd = megasas_get_cmd(instance); |
| 2465 | |
| 2466 | if (!cmd) |
| 2467 | return; |
| 2468 | |
| 2469 | dcmd = &cmd->frame->dcmd; |
| 2470 | |
| 2471 | memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); |
| 2472 | |
| 2473 | dcmd->cmd = MFI_CMD_DCMD; |
| 2474 | dcmd->cmd_status = 0x0; |
| 2475 | dcmd->sge_count = 0; |
| 2476 | dcmd->flags = MFI_FRAME_DIR_NONE; |
| 2477 | dcmd->timeout = 0; |
| 2478 | dcmd->data_xfer_len = 0; |
| 2479 | dcmd->opcode = MR_DCMD_CTRL_CACHE_FLUSH; |
| 2480 | dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE; |
| 2481 | |
| 2482 | megasas_issue_blocked_cmd(instance, cmd); |
| 2483 | |
| 2484 | megasas_return_cmd(instance, cmd); |
| 2485 | |
| 2486 | return; |
| 2487 | } |
| 2488 | |
| 2489 | /** |
| 2490 | * megasas_shutdown_controller - Instructs FW to shutdown the controller |
| 2491 | * @instance: Adapter soft state |
| 2492 | */ |
| 2493 | static void megasas_shutdown_controller(struct megasas_instance *instance) |
| 2494 | { |
| 2495 | struct megasas_cmd *cmd; |
| 2496 | struct megasas_dcmd_frame *dcmd; |
| 2497 | |
| 2498 | cmd = megasas_get_cmd(instance); |
| 2499 | |
| 2500 | if (!cmd) |
| 2501 | return; |
| 2502 | |
| 2503 | if (instance->aen_cmd) |
| 2504 | megasas_issue_blocked_abort_cmd(instance, instance->aen_cmd); |
| 2505 | |
| 2506 | dcmd = &cmd->frame->dcmd; |
| 2507 | |
| 2508 | memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); |
| 2509 | |
| 2510 | dcmd->cmd = MFI_CMD_DCMD; |
| 2511 | dcmd->cmd_status = 0x0; |
| 2512 | dcmd->sge_count = 0; |
| 2513 | dcmd->flags = MFI_FRAME_DIR_NONE; |
| 2514 | dcmd->timeout = 0; |
| 2515 | dcmd->data_xfer_len = 0; |
| 2516 | dcmd->opcode = MR_DCMD_CTRL_SHUTDOWN; |
| 2517 | |
| 2518 | megasas_issue_blocked_cmd(instance, cmd); |
| 2519 | |
| 2520 | megasas_return_cmd(instance, cmd); |
| 2521 | |
| 2522 | return; |
| 2523 | } |
| 2524 | |
| 2525 | /** |
| 2526 | * megasas_detach_one - PCI hot"un"plug entry point |
| 2527 | * @pdev: PCI device structure |
| 2528 | */ |
| 2529 | static void megasas_detach_one(struct pci_dev *pdev) |
| 2530 | { |
| 2531 | int i; |
| 2532 | struct Scsi_Host *host; |
| 2533 | struct megasas_instance *instance; |
| 2534 | |
| 2535 | instance = pci_get_drvdata(pdev); |
| 2536 | host = instance->host; |
| 2537 | |
| 2538 | scsi_remove_host(instance->host); |
| 2539 | megasas_flush_cache(instance); |
| 2540 | megasas_shutdown_controller(instance); |
Sumant Patro | 5d018ad | 2006-10-03 13:13:18 -0700 | [diff] [blame] | 2541 | tasklet_kill(&instance->isr_tasklet); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 2542 | |
| 2543 | /* |
| 2544 | * Take the instance off the instance array. Note that we will not |
| 2545 | * decrement the max_index. We let this array be sparse array |
| 2546 | */ |
| 2547 | for (i = 0; i < megasas_mgmt_info.max_index; i++) { |
| 2548 | if (megasas_mgmt_info.instance[i] == instance) { |
| 2549 | megasas_mgmt_info.count--; |
| 2550 | megasas_mgmt_info.instance[i] = NULL; |
| 2551 | |
| 2552 | break; |
| 2553 | } |
| 2554 | } |
| 2555 | |
| 2556 | pci_set_drvdata(instance->pdev, NULL); |
| 2557 | |
Sumant Patro | b274cab | 2006-10-03 12:52:12 -0700 | [diff] [blame] | 2558 | instance->instancet->disable_intr(instance->reg_set); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 2559 | |
| 2560 | free_irq(instance->pdev->irq, instance); |
| 2561 | |
| 2562 | megasas_release_mfi(instance); |
| 2563 | |
| 2564 | pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), |
| 2565 | instance->evt_detail, instance->evt_detail_h); |
| 2566 | |
| 2567 | pci_free_consistent(pdev, sizeof(u32), instance->producer, |
| 2568 | instance->producer_h); |
| 2569 | |
| 2570 | pci_free_consistent(pdev, sizeof(u32), instance->consumer, |
| 2571 | instance->consumer_h); |
| 2572 | |
| 2573 | scsi_host_put(host); |
| 2574 | |
| 2575 | pci_set_drvdata(pdev, NULL); |
| 2576 | |
| 2577 | pci_disable_device(pdev); |
| 2578 | |
| 2579 | return; |
| 2580 | } |
| 2581 | |
| 2582 | /** |
| 2583 | * megasas_shutdown - Shutdown entry point |
| 2584 | * @device: Generic device structure |
| 2585 | */ |
| 2586 | static void megasas_shutdown(struct pci_dev *pdev) |
| 2587 | { |
| 2588 | struct megasas_instance *instance = pci_get_drvdata(pdev); |
| 2589 | megasas_flush_cache(instance); |
| 2590 | } |
| 2591 | |
| 2592 | /** |
| 2593 | * megasas_mgmt_open - char node "open" entry point |
| 2594 | */ |
| 2595 | static int megasas_mgmt_open(struct inode *inode, struct file *filep) |
| 2596 | { |
| 2597 | /* |
| 2598 | * Allow only those users with admin rights |
| 2599 | */ |
| 2600 | if (!capable(CAP_SYS_ADMIN)) |
| 2601 | return -EACCES; |
| 2602 | |
| 2603 | return 0; |
| 2604 | } |
| 2605 | |
| 2606 | /** |
| 2607 | * megasas_mgmt_release - char node "release" entry point |
| 2608 | */ |
| 2609 | static int megasas_mgmt_release(struct inode *inode, struct file *filep) |
| 2610 | { |
| 2611 | filep->private_data = NULL; |
| 2612 | fasync_helper(-1, filep, 0, &megasas_async_queue); |
| 2613 | |
| 2614 | return 0; |
| 2615 | } |
| 2616 | |
| 2617 | /** |
| 2618 | * megasas_mgmt_fasync - Async notifier registration from applications |
| 2619 | * |
| 2620 | * This function adds the calling process to a driver global queue. When an |
| 2621 | * event occurs, SIGIO will be sent to all processes in this queue. |
| 2622 | */ |
| 2623 | static int megasas_mgmt_fasync(int fd, struct file *filep, int mode) |
| 2624 | { |
| 2625 | int rc; |
| 2626 | |
Arjan van de Ven | 0b95067 | 2006-01-11 13:16:10 +0100 | [diff] [blame] | 2627 | mutex_lock(&megasas_async_queue_mutex); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 2628 | |
| 2629 | rc = fasync_helper(fd, filep, mode, &megasas_async_queue); |
| 2630 | |
Arjan van de Ven | 0b95067 | 2006-01-11 13:16:10 +0100 | [diff] [blame] | 2631 | mutex_unlock(&megasas_async_queue_mutex); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 2632 | |
| 2633 | if (rc >= 0) { |
| 2634 | /* For sanity check when we get ioctl */ |
| 2635 | filep->private_data = filep; |
| 2636 | return 0; |
| 2637 | } |
| 2638 | |
| 2639 | printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc); |
| 2640 | |
| 2641 | return rc; |
| 2642 | } |
| 2643 | |
| 2644 | /** |
| 2645 | * megasas_mgmt_fw_ioctl - Issues management ioctls to FW |
| 2646 | * @instance: Adapter soft state |
| 2647 | * @argp: User's ioctl packet |
| 2648 | */ |
| 2649 | static int |
| 2650 | megasas_mgmt_fw_ioctl(struct megasas_instance *instance, |
| 2651 | struct megasas_iocpacket __user * user_ioc, |
| 2652 | struct megasas_iocpacket *ioc) |
| 2653 | { |
| 2654 | struct megasas_sge32 *kern_sge32; |
| 2655 | struct megasas_cmd *cmd; |
| 2656 | void *kbuff_arr[MAX_IOCTL_SGE]; |
| 2657 | dma_addr_t buf_handle = 0; |
| 2658 | int error = 0, i; |
| 2659 | void *sense = NULL; |
| 2660 | dma_addr_t sense_handle; |
| 2661 | u32 *sense_ptr; |
| 2662 | |
| 2663 | memset(kbuff_arr, 0, sizeof(kbuff_arr)); |
| 2664 | |
| 2665 | if (ioc->sge_count > MAX_IOCTL_SGE) { |
| 2666 | printk(KERN_DEBUG "megasas: SGE count [%d] > max limit [%d]\n", |
| 2667 | ioc->sge_count, MAX_IOCTL_SGE); |
| 2668 | return -EINVAL; |
| 2669 | } |
| 2670 | |
| 2671 | cmd = megasas_get_cmd(instance); |
| 2672 | if (!cmd) { |
| 2673 | printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n"); |
| 2674 | return -ENOMEM; |
| 2675 | } |
| 2676 | |
| 2677 | /* |
| 2678 | * User's IOCTL packet has 2 frames (maximum). Copy those two |
| 2679 | * frames into our cmd's frames. cmd->frame's context will get |
| 2680 | * overwritten when we copy from user's frames. So set that value |
| 2681 | * alone separately |
| 2682 | */ |
| 2683 | memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE); |
| 2684 | cmd->frame->hdr.context = cmd->index; |
| 2685 | |
| 2686 | /* |
| 2687 | * The management interface between applications and the fw uses |
| 2688 | * MFI frames. E.g, RAID configuration changes, LD property changes |
| 2689 | * etc are accomplishes through different kinds of MFI frames. The |
| 2690 | * driver needs to care only about substituting user buffers with |
| 2691 | * kernel buffers in SGLs. The location of SGL is embedded in the |
| 2692 | * struct iocpacket itself. |
| 2693 | */ |
| 2694 | kern_sge32 = (struct megasas_sge32 *) |
| 2695 | ((unsigned long)cmd->frame + ioc->sgl_off); |
| 2696 | |
| 2697 | /* |
| 2698 | * For each user buffer, create a mirror buffer and copy in |
| 2699 | */ |
| 2700 | for (i = 0; i < ioc->sge_count; i++) { |
Sumant Patro | 9f35fa8a | 2007-02-14 12:55:45 -0800 | [diff] [blame] | 2701 | kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev, |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 2702 | ioc->sgl[i].iov_len, |
Sumant Patro | 9f35fa8a | 2007-02-14 12:55:45 -0800 | [diff] [blame] | 2703 | &buf_handle, GFP_KERNEL); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 2704 | if (!kbuff_arr[i]) { |
| 2705 | printk(KERN_DEBUG "megasas: Failed to alloc " |
| 2706 | "kernel SGL buffer for IOCTL \n"); |
| 2707 | error = -ENOMEM; |
| 2708 | goto out; |
| 2709 | } |
| 2710 | |
| 2711 | /* |
| 2712 | * We don't change the dma_coherent_mask, so |
| 2713 | * pci_alloc_consistent only returns 32bit addresses |
| 2714 | */ |
| 2715 | kern_sge32[i].phys_addr = (u32) buf_handle; |
| 2716 | kern_sge32[i].length = ioc->sgl[i].iov_len; |
| 2717 | |
| 2718 | /* |
| 2719 | * We created a kernel buffer corresponding to the |
| 2720 | * user buffer. Now copy in from the user buffer |
| 2721 | */ |
| 2722 | if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base, |
| 2723 | (u32) (ioc->sgl[i].iov_len))) { |
| 2724 | error = -EFAULT; |
| 2725 | goto out; |
| 2726 | } |
| 2727 | } |
| 2728 | |
| 2729 | if (ioc->sense_len) { |
Sumant Patro | 9f35fa8a | 2007-02-14 12:55:45 -0800 | [diff] [blame] | 2730 | sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len, |
| 2731 | &sense_handle, GFP_KERNEL); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 2732 | if (!sense) { |
| 2733 | error = -ENOMEM; |
| 2734 | goto out; |
| 2735 | } |
| 2736 | |
| 2737 | sense_ptr = |
| 2738 | (u32 *) ((unsigned long)cmd->frame + ioc->sense_off); |
| 2739 | *sense_ptr = sense_handle; |
| 2740 | } |
| 2741 | |
| 2742 | /* |
| 2743 | * Set the sync_cmd flag so that the ISR knows not to complete this |
| 2744 | * cmd to the SCSI mid-layer |
| 2745 | */ |
| 2746 | cmd->sync_cmd = 1; |
| 2747 | megasas_issue_blocked_cmd(instance, cmd); |
| 2748 | cmd->sync_cmd = 0; |
| 2749 | |
| 2750 | /* |
| 2751 | * copy out the kernel buffers to user buffers |
| 2752 | */ |
| 2753 | for (i = 0; i < ioc->sge_count; i++) { |
| 2754 | if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i], |
| 2755 | ioc->sgl[i].iov_len)) { |
| 2756 | error = -EFAULT; |
| 2757 | goto out; |
| 2758 | } |
| 2759 | } |
| 2760 | |
| 2761 | /* |
| 2762 | * copy out the sense |
| 2763 | */ |
| 2764 | if (ioc->sense_len) { |
| 2765 | /* |
| 2766 | * sense_ptr points to the location that has the user |
| 2767 | * sense buffer address |
| 2768 | */ |
| 2769 | sense_ptr = (u32 *) ((unsigned long)ioc->frame.raw + |
| 2770 | ioc->sense_off); |
| 2771 | |
| 2772 | if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)), |
| 2773 | sense, ioc->sense_len)) { |
| 2774 | error = -EFAULT; |
| 2775 | goto out; |
| 2776 | } |
| 2777 | } |
| 2778 | |
| 2779 | /* |
| 2780 | * copy the status codes returned by the fw |
| 2781 | */ |
| 2782 | if (copy_to_user(&user_ioc->frame.hdr.cmd_status, |
| 2783 | &cmd->frame->hdr.cmd_status, sizeof(u8))) { |
| 2784 | printk(KERN_DEBUG "megasas: Error copying out cmd_status\n"); |
| 2785 | error = -EFAULT; |
| 2786 | } |
| 2787 | |
| 2788 | out: |
| 2789 | if (sense) { |
Sumant Patro | 9f35fa8a | 2007-02-14 12:55:45 -0800 | [diff] [blame] | 2790 | dma_free_coherent(&instance->pdev->dev, ioc->sense_len, |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 2791 | sense, sense_handle); |
| 2792 | } |
| 2793 | |
| 2794 | for (i = 0; i < ioc->sge_count && kbuff_arr[i]; i++) { |
Sumant Patro | 9f35fa8a | 2007-02-14 12:55:45 -0800 | [diff] [blame] | 2795 | dma_free_coherent(&instance->pdev->dev, |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 2796 | kern_sge32[i].length, |
| 2797 | kbuff_arr[i], kern_sge32[i].phys_addr); |
| 2798 | } |
| 2799 | |
| 2800 | megasas_return_cmd(instance, cmd); |
| 2801 | return error; |
| 2802 | } |
| 2803 | |
| 2804 | static struct megasas_instance *megasas_lookup_instance(u16 host_no) |
| 2805 | { |
| 2806 | int i; |
| 2807 | |
| 2808 | for (i = 0; i < megasas_mgmt_info.max_index; i++) { |
| 2809 | |
| 2810 | if ((megasas_mgmt_info.instance[i]) && |
| 2811 | (megasas_mgmt_info.instance[i]->host->host_no == host_no)) |
| 2812 | return megasas_mgmt_info.instance[i]; |
| 2813 | } |
| 2814 | |
| 2815 | return NULL; |
| 2816 | } |
| 2817 | |
| 2818 | static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg) |
| 2819 | { |
| 2820 | struct megasas_iocpacket __user *user_ioc = |
| 2821 | (struct megasas_iocpacket __user *)arg; |
| 2822 | struct megasas_iocpacket *ioc; |
| 2823 | struct megasas_instance *instance; |
| 2824 | int error; |
| 2825 | |
| 2826 | ioc = kmalloc(sizeof(*ioc), GFP_KERNEL); |
| 2827 | if (!ioc) |
| 2828 | return -ENOMEM; |
| 2829 | |
| 2830 | if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) { |
| 2831 | error = -EFAULT; |
| 2832 | goto out_kfree_ioc; |
| 2833 | } |
| 2834 | |
| 2835 | instance = megasas_lookup_instance(ioc->host_no); |
| 2836 | if (!instance) { |
| 2837 | error = -ENODEV; |
| 2838 | goto out_kfree_ioc; |
| 2839 | } |
| 2840 | |
| 2841 | /* |
| 2842 | * We will allow only MEGASAS_INT_CMDS number of parallel ioctl cmds |
| 2843 | */ |
| 2844 | if (down_interruptible(&instance->ioctl_sem)) { |
| 2845 | error = -ERESTARTSYS; |
| 2846 | goto out_kfree_ioc; |
| 2847 | } |
| 2848 | error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc); |
| 2849 | up(&instance->ioctl_sem); |
| 2850 | |
| 2851 | out_kfree_ioc: |
| 2852 | kfree(ioc); |
| 2853 | return error; |
| 2854 | } |
| 2855 | |
| 2856 | static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg) |
| 2857 | { |
| 2858 | struct megasas_instance *instance; |
| 2859 | struct megasas_aen aen; |
| 2860 | int error; |
| 2861 | |
| 2862 | if (file->private_data != file) { |
| 2863 | printk(KERN_DEBUG "megasas: fasync_helper was not " |
| 2864 | "called first\n"); |
| 2865 | return -EINVAL; |
| 2866 | } |
| 2867 | |
| 2868 | if (copy_from_user(&aen, (void __user *)arg, sizeof(aen))) |
| 2869 | return -EFAULT; |
| 2870 | |
| 2871 | instance = megasas_lookup_instance(aen.host_no); |
| 2872 | |
| 2873 | if (!instance) |
| 2874 | return -ENODEV; |
| 2875 | |
| 2876 | down(&instance->aen_mutex); |
| 2877 | error = megasas_register_aen(instance, aen.seq_num, |
| 2878 | aen.class_locale_word); |
| 2879 | up(&instance->aen_mutex); |
| 2880 | return error; |
| 2881 | } |
| 2882 | |
| 2883 | /** |
| 2884 | * megasas_mgmt_ioctl - char node ioctl entry point |
| 2885 | */ |
| 2886 | static long |
| 2887 | megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
| 2888 | { |
| 2889 | switch (cmd) { |
| 2890 | case MEGASAS_IOC_FIRMWARE: |
| 2891 | return megasas_mgmt_ioctl_fw(file, arg); |
| 2892 | |
| 2893 | case MEGASAS_IOC_GET_AEN: |
| 2894 | return megasas_mgmt_ioctl_aen(file, arg); |
| 2895 | } |
| 2896 | |
| 2897 | return -ENOTTY; |
| 2898 | } |
| 2899 | |
| 2900 | #ifdef CONFIG_COMPAT |
| 2901 | static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg) |
| 2902 | { |
| 2903 | struct compat_megasas_iocpacket __user *cioc = |
| 2904 | (struct compat_megasas_iocpacket __user *)arg; |
| 2905 | struct megasas_iocpacket __user *ioc = |
| 2906 | compat_alloc_user_space(sizeof(struct megasas_iocpacket)); |
| 2907 | int i; |
| 2908 | int error = 0; |
| 2909 | |
Jeff Garzik | 83aabc1 | 2006-10-04 06:34:03 -0400 | [diff] [blame] | 2910 | if (clear_user(ioc, sizeof(*ioc))) |
| 2911 | return -EFAULT; |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 2912 | |
| 2913 | if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) || |
| 2914 | copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) || |
| 2915 | copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) || |
| 2916 | copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) || |
| 2917 | copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) || |
| 2918 | copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32))) |
| 2919 | return -EFAULT; |
| 2920 | |
| 2921 | for (i = 0; i < MAX_IOCTL_SGE; i++) { |
| 2922 | compat_uptr_t ptr; |
| 2923 | |
| 2924 | if (get_user(ptr, &cioc->sgl[i].iov_base) || |
| 2925 | put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) || |
| 2926 | copy_in_user(&ioc->sgl[i].iov_len, |
| 2927 | &cioc->sgl[i].iov_len, sizeof(compat_size_t))) |
| 2928 | return -EFAULT; |
| 2929 | } |
| 2930 | |
| 2931 | error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc); |
| 2932 | |
| 2933 | if (copy_in_user(&cioc->frame.hdr.cmd_status, |
| 2934 | &ioc->frame.hdr.cmd_status, sizeof(u8))) { |
| 2935 | printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n"); |
| 2936 | return -EFAULT; |
| 2937 | } |
| 2938 | return error; |
| 2939 | } |
| 2940 | |
| 2941 | static long |
| 2942 | megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd, |
| 2943 | unsigned long arg) |
| 2944 | { |
| 2945 | switch (cmd) { |
Sumant Patro | cb59aa6 | 2006-01-25 11:53:25 -0800 | [diff] [blame] | 2946 | case MEGASAS_IOC_FIRMWARE32: |
| 2947 | return megasas_mgmt_compat_ioctl_fw(file, arg); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 2948 | case MEGASAS_IOC_GET_AEN: |
| 2949 | return megasas_mgmt_ioctl_aen(file, arg); |
| 2950 | } |
| 2951 | |
| 2952 | return -ENOTTY; |
| 2953 | } |
| 2954 | #endif |
| 2955 | |
| 2956 | /* |
| 2957 | * File operations structure for management interface |
| 2958 | */ |
Arjan van de Ven | 00977a5 | 2007-02-12 00:55:34 -0800 | [diff] [blame] | 2959 | static const struct file_operations megasas_mgmt_fops = { |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 2960 | .owner = THIS_MODULE, |
| 2961 | .open = megasas_mgmt_open, |
| 2962 | .release = megasas_mgmt_release, |
| 2963 | .fasync = megasas_mgmt_fasync, |
| 2964 | .unlocked_ioctl = megasas_mgmt_ioctl, |
| 2965 | #ifdef CONFIG_COMPAT |
| 2966 | .compat_ioctl = megasas_mgmt_compat_ioctl, |
| 2967 | #endif |
| 2968 | }; |
| 2969 | |
| 2970 | /* |
| 2971 | * PCI hotplug support registration structure |
| 2972 | */ |
| 2973 | static struct pci_driver megasas_pci_driver = { |
| 2974 | |
| 2975 | .name = "megaraid_sas", |
| 2976 | .id_table = megasas_pci_table, |
| 2977 | .probe = megasas_probe_one, |
| 2978 | .remove = __devexit_p(megasas_detach_one), |
| 2979 | .shutdown = megasas_shutdown, |
| 2980 | }; |
| 2981 | |
| 2982 | /* |
| 2983 | * Sysfs driver attributes |
| 2984 | */ |
| 2985 | static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf) |
| 2986 | { |
| 2987 | return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n", |
| 2988 | MEGASAS_VERSION); |
| 2989 | } |
| 2990 | |
| 2991 | static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL); |
| 2992 | |
| 2993 | static ssize_t |
| 2994 | megasas_sysfs_show_release_date(struct device_driver *dd, char *buf) |
| 2995 | { |
| 2996 | return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n", |
| 2997 | MEGASAS_RELDATE); |
| 2998 | } |
| 2999 | |
| 3000 | static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date, |
| 3001 | NULL); |
| 3002 | |
Sumant Patro | 658dced | 2006-10-03 13:09:14 -0700 | [diff] [blame] | 3003 | static ssize_t |
| 3004 | megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf) |
| 3005 | { |
| 3006 | return sprintf(buf,"%u",megasas_dbg_lvl); |
| 3007 | } |
| 3008 | |
| 3009 | static ssize_t |
| 3010 | megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count) |
| 3011 | { |
| 3012 | int retval = count; |
| 3013 | if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){ |
| 3014 | printk(KERN_ERR "megasas: could not set dbg_lvl\n"); |
| 3015 | retval = -EINVAL; |
| 3016 | } |
| 3017 | return retval; |
| 3018 | } |
| 3019 | |
| 3020 | static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUGO, megasas_sysfs_show_dbg_lvl, |
| 3021 | megasas_sysfs_set_dbg_lvl); |
| 3022 | |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 3023 | /** |
| 3024 | * megasas_init - Driver load entry point |
| 3025 | */ |
| 3026 | static int __init megasas_init(void) |
| 3027 | { |
| 3028 | int rval; |
| 3029 | |
| 3030 | /* |
| 3031 | * Announce driver version and other information |
| 3032 | */ |
| 3033 | printk(KERN_INFO "megasas: %s %s\n", MEGASAS_VERSION, |
| 3034 | MEGASAS_EXT_VERSION); |
| 3035 | |
| 3036 | memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info)); |
| 3037 | |
| 3038 | /* |
| 3039 | * Register character device node |
| 3040 | */ |
| 3041 | rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops); |
| 3042 | |
| 3043 | if (rval < 0) { |
| 3044 | printk(KERN_DEBUG "megasas: failed to open device node\n"); |
| 3045 | return rval; |
| 3046 | } |
| 3047 | |
| 3048 | megasas_mgmt_majorno = rval; |
| 3049 | |
| 3050 | /* |
| 3051 | * Register ourselves as PCI hotplug module |
| 3052 | */ |
Michal Piotrowski | 4041b9c | 2006-08-17 13:28:22 +0000 | [diff] [blame] | 3053 | rval = pci_register_driver(&megasas_pci_driver); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 3054 | |
| 3055 | if (rval) { |
| 3056 | printk(KERN_DEBUG "megasas: PCI hotplug regisration failed \n"); |
Jeff Garzik | 83aabc1 | 2006-10-04 06:34:03 -0400 | [diff] [blame] | 3057 | goto err_pcidrv; |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 3058 | } |
| 3059 | |
Jeff Garzik | 83aabc1 | 2006-10-04 06:34:03 -0400 | [diff] [blame] | 3060 | rval = driver_create_file(&megasas_pci_driver.driver, |
| 3061 | &driver_attr_version); |
| 3062 | if (rval) |
| 3063 | goto err_dcf_attr_ver; |
| 3064 | rval = driver_create_file(&megasas_pci_driver.driver, |
| 3065 | &driver_attr_release_date); |
| 3066 | if (rval) |
| 3067 | goto err_dcf_rel_date; |
| 3068 | rval = driver_create_file(&megasas_pci_driver.driver, |
| 3069 | &driver_attr_dbg_lvl); |
| 3070 | if (rval) |
| 3071 | goto err_dcf_dbg_lvl; |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 3072 | |
| 3073 | return rval; |
Jeff Garzik | 83aabc1 | 2006-10-04 06:34:03 -0400 | [diff] [blame] | 3074 | err_dcf_dbg_lvl: |
| 3075 | driver_remove_file(&megasas_pci_driver.driver, |
| 3076 | &driver_attr_release_date); |
| 3077 | err_dcf_rel_date: |
| 3078 | driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); |
| 3079 | err_dcf_attr_ver: |
| 3080 | pci_unregister_driver(&megasas_pci_driver); |
| 3081 | err_pcidrv: |
| 3082 | unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); |
| 3083 | return rval; |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 3084 | } |
| 3085 | |
| 3086 | /** |
| 3087 | * megasas_exit - Driver unload entry point |
| 3088 | */ |
| 3089 | static void __exit megasas_exit(void) |
| 3090 | { |
Sumant Patro | 658dced | 2006-10-03 13:09:14 -0700 | [diff] [blame] | 3091 | driver_remove_file(&megasas_pci_driver.driver, |
| 3092 | &driver_attr_dbg_lvl); |
Jeff Garzik | 83aabc1 | 2006-10-04 06:34:03 -0400 | [diff] [blame] | 3093 | driver_remove_file(&megasas_pci_driver.driver, |
| 3094 | &driver_attr_release_date); |
| 3095 | driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); |
Bagalkote, Sreenivas | c4a3e0a | 2005-09-20 17:46:58 -0400 | [diff] [blame] | 3096 | |
| 3097 | pci_unregister_driver(&megasas_pci_driver); |
| 3098 | unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); |
| 3099 | } |
| 3100 | |
| 3101 | module_init(megasas_init); |
| 3102 | module_exit(megasas_exit); |