Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | 3w-xxxx.c -- 3ware Storage Controller device driver for Linux. |
| 3 | |
| 4 | Written By: Adam Radford <linuxraid@amcc.com> |
| 5 | Modifications By: Joel Jacobson <linux@3ware.com> |
| 6 | Arnaldo Carvalho de Melo <acme@conectiva.com.br> |
| 7 | Brad Strand <linux@3ware.com> |
| 8 | |
adam radford | 4fe4818 | 2007-01-04 18:16:56 -0800 | [diff] [blame] | 9 | Copyright (C) 1999-2007 3ware Inc. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | |
| 11 | Kernel compatiblity By: Andre Hedrick <andre@suse.com> |
| 12 | Non-Copyright (C) 2000 Andre Hedrick <andre@suse.com> |
| 13 | |
| 14 | Further tiny build fixes and trivial hoovering Alan Cox |
| 15 | |
| 16 | This program is free software; you can redistribute it and/or modify |
| 17 | it under the terms of the GNU General Public License as published by |
| 18 | the Free Software Foundation; version 2 of the License. |
| 19 | |
| 20 | This program is distributed in the hope that it will be useful, |
| 21 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 22 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 23 | GNU General Public License for more details. |
| 24 | |
| 25 | NO WARRANTY |
| 26 | THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR |
| 27 | CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT |
| 28 | LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, |
| 29 | MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is |
| 30 | solely responsible for determining the appropriateness of using and |
| 31 | distributing the Program and assumes all risks associated with its |
| 32 | exercise of rights under this Agreement, including but not limited to |
| 33 | the risks and costs of program errors, damage to or loss of data, |
| 34 | programs or equipment, and unavailability or interruption of operations. |
| 35 | |
| 36 | DISCLAIMER OF LIABILITY |
| 37 | NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY |
| 38 | DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 39 | DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND |
| 40 | ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR |
| 41 | TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE |
| 42 | USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED |
| 43 | HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES |
| 44 | |
| 45 | You should have received a copy of the GNU General Public License |
| 46 | along with this program; if not, write to the Free Software |
| 47 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 48 | |
| 49 | Bugs/Comments/Suggestions should be mailed to: |
| 50 | linuxraid@amcc.com |
| 51 | |
| 52 | For more information, goto: |
| 53 | http://www.amcc.com |
| 54 | |
| 55 | History |
| 56 | ------- |
| 57 | 0.1.000 - Initial release. |
| 58 | 0.4.000 - Added support for Asynchronous Event Notification through |
| 59 | ioctls for 3DM. |
| 60 | 1.0.000 - Added DPO & FUA bit support for WRITE_10 & WRITE_6 cdb |
| 61 | to disable drive write-cache before writes. |
| 62 | 1.1.000 - Fixed performance bug with DPO & FUA not existing for WRITE_6. |
| 63 | 1.2.000 - Added support for clean shutdown notification/feature table. |
| 64 | 1.02.00.001 - Added support for full command packet posts through ioctls |
| 65 | for 3DM. |
| 66 | Bug fix so hot spare drives don't show up. |
| 67 | 1.02.00.002 - Fix bug with tw_setfeature() call that caused oops on some |
| 68 | systems. |
| 69 | 08/21/00 - release previously allocated resources on failure at |
| 70 | tw_allocate_memory (acme) |
| 71 | 1.02.00.003 - Fix tw_interrupt() to report error to scsi layer when |
| 72 | controller status is non-zero. |
| 73 | Added handling of request_sense opcode. |
| 74 | Fix possible null pointer dereference in |
| 75 | tw_reset_device_extension() |
| 76 | 1.02.00.004 - Add support for device id of 3ware 7000 series controllers. |
| 77 | Make tw_setfeature() call with interrupts disabled. |
| 78 | Register interrupt handler before enabling interrupts. |
| 79 | Clear attention interrupt before draining aen queue. |
| 80 | 1.02.00.005 - Allocate bounce buffers and custom queue depth for raid5 for |
| 81 | 6000 and 5000 series controllers. |
| 82 | Reduce polling mdelays causing problems on some systems. |
| 83 | Fix use_sg = 1 calculation bug. |
| 84 | Check for scsi_register returning NULL. |
| 85 | Add aen count to /proc/scsi/3w-xxxx. |
| 86 | Remove aen code unit masking in tw_aen_complete(). |
| 87 | 1.02.00.006 - Remove unit from printk in tw_scsi_eh_abort(), causing |
| 88 | possible oops. |
| 89 | Fix possible null pointer dereference in tw_scsi_queue() |
| 90 | if done function pointer was invalid. |
| 91 | 1.02.00.007 - Fix possible null pointer dereferences in tw_ioctl(). |
| 92 | Remove check for invalid done function pointer from |
| 93 | tw_scsi_queue(). |
| 94 | 1.02.00.008 - Set max sectors per io to TW_MAX_SECTORS in tw_findcards(). |
| 95 | Add tw_decode_error() for printing readable error messages. |
| 96 | Print some useful information on certain aen codes. |
| 97 | Add tw_decode_bits() for interpreting status register output. |
| 98 | Make scsi_set_pci_device() for kernels >= 2.4.4 |
| 99 | Fix bug where aen's could be lost before a reset. |
| 100 | Re-add spinlocks in tw_scsi_detect(). |
| 101 | Fix possible null pointer dereference in tw_aen_drain_queue() |
| 102 | during initialization. |
| 103 | Clear pci parity errors during initialization and during io. |
| 104 | 1.02.00.009 - Remove redundant increment in tw_state_request_start(). |
| 105 | Add ioctl support for direct ATA command passthru. |
| 106 | Add entire aen code string list. |
| 107 | 1.02.00.010 - Cleanup queueing code, fix jbod thoughput. |
| 108 | Fix get_param for specific units. |
| 109 | 1.02.00.011 - Fix bug in tw_aen_complete() where aen's could be lost. |
| 110 | Fix tw_aen_drain_queue() to display useful info at init. |
| 111 | Set tw_host->max_id for 12 port cards. |
| 112 | Add ioctl support for raw command packet post from userspace |
| 113 | with sglist fragments (parameter and io). |
| 114 | 1.02.00.012 - Fix read capacity to under report by 1 sector to fix get |
| 115 | last sector ioctl. |
| 116 | 1.02.00.013 - Fix bug where more AEN codes weren't coming out during |
| 117 | driver initialization. |
| 118 | Improved handling of PCI aborts. |
| 119 | 1.02.00.014 - Fix bug in tw_findcards() where AEN code could be lost. |
| 120 | Increase timeout in tw_aen_drain_queue() to 30 seconds. |
| 121 | 1.02.00.015 - Re-write raw command post with data ioctl method. |
| 122 | Remove raid5 bounce buffers for raid5 for 6XXX for kernel 2.5 |
| 123 | Add tw_map/unmap_scsi_sg/single_data() for kernel 2.5 |
| 124 | Replace io_request_lock with host_lock for kernel 2.5 |
| 125 | Set max_cmd_len to 16 for 3dm for kernel 2.5 |
| 126 | 1.02.00.016 - Set host->max_sectors back up to 256. |
| 127 | 1.02.00.017 - Modified pci parity error handling/clearing from config space |
| 128 | during initialization. |
| 129 | 1.02.00.018 - Better handling of request sense opcode and sense information |
| 130 | for failed commands. Add tw_decode_sense(). |
| 131 | Replace all mdelay()'s with scsi_sleep(). |
| 132 | 1.02.00.019 - Revert mdelay's and scsi_sleep's, this caused problems on |
| 133 | some SMP systems. |
| 134 | 1.02.00.020 - Add pci_set_dma_mask(), rewrite kmalloc()/virt_to_bus() to |
| 135 | pci_alloc/free_consistent(). |
| 136 | Better alignment checking in tw_allocate_memory(). |
| 137 | Cleanup tw_initialize_device_extension(). |
| 138 | 1.02.00.021 - Bump cmd_per_lun in SHT to 255 for better jbod performance. |
| 139 | Improve handling of errors in tw_interrupt(). |
| 140 | Add handling/clearing of controller queue error. |
| 141 | Empty stale responses before draining aen queue. |
| 142 | Fix tw_scsi_eh_abort() to not reset on every io abort. |
| 143 | Set can_queue in SHT to 255 to prevent hang from AEN. |
| 144 | 1.02.00.022 - Fix possible null pointer dereference in tw_scsi_release(). |
| 145 | 1.02.00.023 - Fix bug in tw_aen_drain_queue() where unit # was always zero. |
| 146 | 1.02.00.024 - Add severity levels to AEN strings. |
| 147 | 1.02.00.025 - Fix command interrupt spurious error messages. |
| 148 | Fix bug in raw command post with data ioctl method. |
| 149 | Fix bug where rollcall sometimes failed with cable errors. |
| 150 | Print unit # on all command timeouts. |
| 151 | 1.02.00.026 - Fix possible infinite retry bug with power glitch induced |
| 152 | drive timeouts. |
| 153 | Cleanup some AEN severity levels. |
| 154 | 1.02.00.027 - Add drive not supported AEN code for SATA controllers. |
| 155 | Remove spurious unknown ioctl error message. |
| 156 | 1.02.00.028 - Fix bug where multiple controllers with no units were the |
| 157 | same card number. |
| 158 | Fix bug where cards were being shut down more than once. |
| 159 | 1.02.00.029 - Add missing pci_free_consistent() in tw_allocate_memory(). |
| 160 | Replace pci_map_single() with pci_map_page() for highmem. |
| 161 | Check for tw_setfeature() failure. |
| 162 | 1.02.00.030 - Make driver 64-bit clean. |
| 163 | 1.02.00.031 - Cleanup polling timeouts/routines in several places. |
| 164 | Add support for mode sense opcode. |
| 165 | Add support for cache mode page. |
| 166 | Add support for synchronize cache opcode. |
| 167 | 1.02.00.032 - Fix small multicard rollcall bug. |
| 168 | Make driver stay loaded with no units for hot add/swap. |
| 169 | Add support for "twe" character device for ioctls. |
| 170 | Clean up request_id queueing code. |
| 171 | Fix tw_scsi_queue() spinlocks. |
| 172 | 1.02.00.033 - Fix tw_aen_complete() to not queue 'queue empty' AEN's. |
| 173 | Initialize queues correctly when loading with no valid units. |
| 174 | 1.02.00.034 - Fix tw_decode_bits() to handle multiple errors. |
| 175 | Add support for user configurable cmd_per_lun. |
| 176 | Add support for sht->slave_configure(). |
| 177 | 1.02.00.035 - Improve tw_allocate_memory() memory allocation. |
| 178 | Fix tw_chrdev_ioctl() to sleep correctly. |
| 179 | 1.02.00.036 - Increase character ioctl timeout to 60 seconds. |
| 180 | 1.02.00.037 - Fix tw_ioctl() to handle all non-data ATA passthru cmds |
| 181 | for 'smartmontools' support. |
| 182 | 1.26.00.038 - Roll driver minor version to 26 to denote kernel 2.6. |
| 183 | Add support for cmds_per_lun module parameter. |
| 184 | 1.26.00.039 - Fix bug in tw_chrdev_ioctl() polling code. |
| 185 | Fix data_buffer_length usage in tw_chrdev_ioctl(). |
| 186 | Update contact information. |
| 187 | 1.26.02.000 - Convert driver to pci_driver format. |
| 188 | 1.26.02.001 - Increase max ioctl buffer size to 512 sectors. |
| 189 | Make tw_scsi_queue() return 0 for 'Unknown scsi opcode'. |
| 190 | Fix tw_remove() to free irq handler/unregister_chrdev() |
| 191 | before shutting down card. |
| 192 | Change to new 'change_queue_depth' api. |
| 193 | Fix 'handled=1' ISR usage, remove bogus IRQ check. |
adam radford | 4fe4818 | 2007-01-04 18:16:56 -0800 | [diff] [blame] | 194 | 1.26.02.002 - Free irq handler in __tw_shutdown(). |
| 195 | Turn on RCD bit for caching mode page. |
| 196 | Serialize reset code. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | */ |
| 198 | |
| 199 | #include <linux/module.h> |
| 200 | #include <linux/reboot.h> |
| 201 | #include <linux/spinlock.h> |
| 202 | #include <linux/interrupt.h> |
| 203 | #include <linux/moduleparam.h> |
| 204 | #include <linux/errno.h> |
| 205 | #include <linux/types.h> |
| 206 | #include <linux/delay.h> |
| 207 | #include <linux/pci.h> |
| 208 | #include <linux/time.h> |
Jes Sorensen | a12e25b | 2006-01-11 08:39:45 -0500 | [diff] [blame] | 209 | #include <linux/mutex.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | #include <asm/io.h> |
| 211 | #include <asm/irq.h> |
| 212 | #include <asm/uaccess.h> |
| 213 | #include <scsi/scsi.h> |
| 214 | #include <scsi/scsi_host.h> |
| 215 | #include <scsi/scsi_tcq.h> |
| 216 | #include <scsi/scsi_cmnd.h> |
| 217 | #include "3w-xxxx.h" |
| 218 | |
| 219 | /* Globals */ |
adam radford | 4fe4818 | 2007-01-04 18:16:56 -0800 | [diff] [blame] | 220 | #define TW_DRIVER_VERSION "1.26.02.002" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | static TW_Device_Extension *tw_device_extension_list[TW_MAX_SLOT]; |
| 222 | static int tw_device_extension_count = 0; |
| 223 | static int twe_major = -1; |
| 224 | |
| 225 | /* Module parameters */ |
| 226 | MODULE_AUTHOR("AMCC"); |
| 227 | MODULE_DESCRIPTION("3ware Storage Controller Linux Driver"); |
| 228 | MODULE_LICENSE("GPL"); |
| 229 | MODULE_VERSION(TW_DRIVER_VERSION); |
| 230 | |
| 231 | /* Function prototypes */ |
adam radford | 4fe4818 | 2007-01-04 18:16:56 -0800 | [diff] [blame] | 232 | static int tw_reset_device_extension(TW_Device_Extension *tw_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | |
| 234 | /* Functions */ |
| 235 | |
| 236 | /* This function will check the status register for unexpected bits */ |
| 237 | static int tw_check_bits(u32 status_reg_value) |
| 238 | { |
| 239 | if ((status_reg_value & TW_STATUS_EXPECTED_BITS) != TW_STATUS_EXPECTED_BITS) { |
| 240 | dprintk(KERN_WARNING "3w-xxxx: tw_check_bits(): No expected bits (0x%x).\n", status_reg_value); |
| 241 | return 1; |
| 242 | } |
| 243 | if ((status_reg_value & TW_STATUS_UNEXPECTED_BITS) != 0) { |
| 244 | dprintk(KERN_WARNING "3w-xxxx: tw_check_bits(): Found unexpected bits (0x%x).\n", status_reg_value); |
| 245 | return 1; |
| 246 | } |
| 247 | |
| 248 | return 0; |
| 249 | } /* End tw_check_bits() */ |
| 250 | |
| 251 | /* This function will print readable messages from status register errors */ |
| 252 | static int tw_decode_bits(TW_Device_Extension *tw_dev, u32 status_reg_value, int print_host) |
| 253 | { |
| 254 | char host[16]; |
| 255 | |
| 256 | dprintk(KERN_WARNING "3w-xxxx: tw_decode_bits()\n"); |
| 257 | |
| 258 | if (print_host) |
| 259 | sprintf(host, " scsi%d:", tw_dev->host->host_no); |
| 260 | else |
| 261 | host[0] = '\0'; |
| 262 | |
| 263 | if (status_reg_value & TW_STATUS_PCI_PARITY_ERROR) { |
| 264 | printk(KERN_WARNING "3w-xxxx:%s PCI Parity Error: clearing.\n", host); |
| 265 | outl(TW_CONTROL_CLEAR_PARITY_ERROR, TW_CONTROL_REG_ADDR(tw_dev)); |
| 266 | } |
| 267 | |
| 268 | if (status_reg_value & TW_STATUS_PCI_ABORT) { |
| 269 | printk(KERN_WARNING "3w-xxxx:%s PCI Abort: clearing.\n", host); |
| 270 | outl(TW_CONTROL_CLEAR_PCI_ABORT, TW_CONTROL_REG_ADDR(tw_dev)); |
| 271 | pci_write_config_word(tw_dev->tw_pci_dev, PCI_STATUS, TW_PCI_CLEAR_PCI_ABORT); |
| 272 | } |
| 273 | |
| 274 | if (status_reg_value & TW_STATUS_QUEUE_ERROR) { |
| 275 | printk(KERN_WARNING "3w-xxxx:%s Controller Queue Error: clearing.\n", host); |
| 276 | outl(TW_CONTROL_CLEAR_QUEUE_ERROR, TW_CONTROL_REG_ADDR(tw_dev)); |
| 277 | } |
| 278 | |
| 279 | if (status_reg_value & TW_STATUS_SBUF_WRITE_ERROR) { |
| 280 | printk(KERN_WARNING "3w-xxxx:%s SBUF Write Error: clearing.\n", host); |
| 281 | outl(TW_CONTROL_CLEAR_SBUF_WRITE_ERROR, TW_CONTROL_REG_ADDR(tw_dev)); |
| 282 | } |
| 283 | |
| 284 | if (status_reg_value & TW_STATUS_MICROCONTROLLER_ERROR) { |
| 285 | if (tw_dev->reset_print == 0) { |
| 286 | printk(KERN_WARNING "3w-xxxx:%s Microcontroller Error: clearing.\n", host); |
| 287 | tw_dev->reset_print = 1; |
| 288 | } |
| 289 | return 1; |
| 290 | } |
| 291 | |
| 292 | return 0; |
| 293 | } /* End tw_decode_bits() */ |
| 294 | |
| 295 | /* This function will poll the status register for a flag */ |
| 296 | static int tw_poll_status(TW_Device_Extension *tw_dev, u32 flag, int seconds) |
| 297 | { |
| 298 | u32 status_reg_value; |
| 299 | unsigned long before; |
| 300 | int retval = 1; |
| 301 | |
| 302 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); |
| 303 | before = jiffies; |
| 304 | |
| 305 | if (tw_check_bits(status_reg_value)) |
| 306 | tw_decode_bits(tw_dev, status_reg_value, 0); |
| 307 | |
| 308 | while ((status_reg_value & flag) != flag) { |
| 309 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); |
| 310 | |
| 311 | if (tw_check_bits(status_reg_value)) |
| 312 | tw_decode_bits(tw_dev, status_reg_value, 0); |
| 313 | |
| 314 | if (time_after(jiffies, before + HZ * seconds)) |
| 315 | goto out; |
| 316 | |
| 317 | msleep(50); |
| 318 | } |
| 319 | retval = 0; |
| 320 | out: |
| 321 | return retval; |
| 322 | } /* End tw_poll_status() */ |
| 323 | |
| 324 | /* This function will poll the status register for disappearance of a flag */ |
| 325 | static int tw_poll_status_gone(TW_Device_Extension *tw_dev, u32 flag, int seconds) |
| 326 | { |
| 327 | u32 status_reg_value; |
| 328 | unsigned long before; |
| 329 | int retval = 1; |
| 330 | |
| 331 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); |
| 332 | before = jiffies; |
| 333 | |
| 334 | if (tw_check_bits(status_reg_value)) |
| 335 | tw_decode_bits(tw_dev, status_reg_value, 0); |
| 336 | |
| 337 | while ((status_reg_value & flag) != 0) { |
| 338 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); |
| 339 | |
| 340 | if (tw_check_bits(status_reg_value)) |
| 341 | tw_decode_bits(tw_dev, status_reg_value, 0); |
| 342 | |
| 343 | if (time_after(jiffies, before + HZ * seconds)) |
| 344 | goto out; |
| 345 | |
| 346 | msleep(50); |
| 347 | } |
| 348 | retval = 0; |
| 349 | out: |
| 350 | return retval; |
| 351 | } /* End tw_poll_status_gone() */ |
| 352 | |
| 353 | /* This function will attempt to post a command packet to the board */ |
| 354 | static int tw_post_command_packet(TW_Device_Extension *tw_dev, int request_id) |
| 355 | { |
| 356 | u32 status_reg_value; |
| 357 | unsigned long command_que_value; |
| 358 | |
| 359 | dprintk(KERN_NOTICE "3w-xxxx: tw_post_command_packet()\n"); |
| 360 | command_que_value = tw_dev->command_packet_physical_address[request_id]; |
| 361 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); |
| 362 | |
| 363 | if (tw_check_bits(status_reg_value)) { |
| 364 | dprintk(KERN_WARNING "3w-xxxx: tw_post_command_packet(): Unexpected bits.\n"); |
| 365 | tw_decode_bits(tw_dev, status_reg_value, 1); |
| 366 | } |
| 367 | |
| 368 | if ((status_reg_value & TW_STATUS_COMMAND_QUEUE_FULL) == 0) { |
| 369 | /* We successfully posted the command packet */ |
| 370 | outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); |
| 371 | tw_dev->state[request_id] = TW_S_POSTED; |
| 372 | tw_dev->posted_request_count++; |
| 373 | if (tw_dev->posted_request_count > tw_dev->max_posted_request_count) { |
| 374 | tw_dev->max_posted_request_count = tw_dev->posted_request_count; |
| 375 | } |
| 376 | } else { |
| 377 | /* Couldn't post the command packet, so we do it in the isr */ |
| 378 | if (tw_dev->state[request_id] != TW_S_PENDING) { |
| 379 | tw_dev->state[request_id] = TW_S_PENDING; |
| 380 | tw_dev->pending_request_count++; |
| 381 | if (tw_dev->pending_request_count > tw_dev->max_pending_request_count) { |
| 382 | tw_dev->max_pending_request_count = tw_dev->pending_request_count; |
| 383 | } |
| 384 | tw_dev->pending_queue[tw_dev->pending_tail] = request_id; |
| 385 | if (tw_dev->pending_tail == TW_Q_LENGTH-1) { |
| 386 | tw_dev->pending_tail = TW_Q_START; |
| 387 | } else { |
| 388 | tw_dev->pending_tail = tw_dev->pending_tail + 1; |
| 389 | } |
| 390 | } |
| 391 | TW_UNMASK_COMMAND_INTERRUPT(tw_dev); |
| 392 | return 1; |
| 393 | } |
| 394 | return 0; |
| 395 | } /* End tw_post_command_packet() */ |
| 396 | |
| 397 | /* This function will return valid sense buffer information for failed cmds */ |
| 398 | static int tw_decode_sense(TW_Device_Extension *tw_dev, int request_id, int fill_sense) |
| 399 | { |
| 400 | int i; |
| 401 | TW_Command *command; |
| 402 | |
| 403 | dprintk(KERN_WARNING "3w-xxxx: tw_decode_sense()\n"); |
| 404 | command = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
| 405 | |
| 406 | printk(KERN_WARNING "3w-xxxx: scsi%d: Command failed: status = 0x%x, flags = 0x%x, unit #%d.\n", tw_dev->host->host_no, command->status, command->flags, TW_UNIT_OUT(command->unit__hostid)); |
| 407 | |
| 408 | /* Attempt to return intelligent sense information */ |
| 409 | if (fill_sense) { |
| 410 | if ((command->status == 0xc7) || (command->status == 0xcb)) { |
Tobias Klauser | 6391a11 | 2006-06-08 22:23:48 -0700 | [diff] [blame] | 411 | for (i = 0; i < ARRAY_SIZE(tw_sense_table); i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | if (command->flags == tw_sense_table[i][0]) { |
| 413 | |
| 414 | /* Valid bit and 'current errors' */ |
| 415 | tw_dev->srb[request_id]->sense_buffer[0] = (0x1 << 7 | 0x70); |
| 416 | |
| 417 | /* Sense key */ |
| 418 | tw_dev->srb[request_id]->sense_buffer[2] = tw_sense_table[i][1]; |
| 419 | |
| 420 | /* Additional sense length */ |
| 421 | tw_dev->srb[request_id]->sense_buffer[7] = 0xa; /* 10 bytes */ |
| 422 | |
| 423 | /* Additional sense code */ |
| 424 | tw_dev->srb[request_id]->sense_buffer[12] = tw_sense_table[i][2]; |
| 425 | |
| 426 | /* Additional sense code qualifier */ |
| 427 | tw_dev->srb[request_id]->sense_buffer[13] = tw_sense_table[i][3]; |
| 428 | |
| 429 | tw_dev->srb[request_id]->result = (DID_OK << 16) | (CHECK_CONDITION << 1); |
| 430 | return TW_ISR_DONT_RESULT; /* Special case for isr to not over-write result */ |
| 431 | } |
| 432 | } |
| 433 | } |
| 434 | |
| 435 | /* If no table match, error so we get a reset */ |
| 436 | return 1; |
| 437 | } |
| 438 | |
| 439 | return 0; |
| 440 | } /* End tw_decode_sense() */ |
| 441 | |
| 442 | /* This function will report controller error status */ |
| 443 | static int tw_check_errors(TW_Device_Extension *tw_dev) |
| 444 | { |
| 445 | u32 status_reg_value; |
| 446 | |
| 447 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); |
| 448 | |
| 449 | if (TW_STATUS_ERRORS(status_reg_value) || tw_check_bits(status_reg_value)) { |
| 450 | tw_decode_bits(tw_dev, status_reg_value, 0); |
| 451 | return 1; |
| 452 | } |
| 453 | |
| 454 | return 0; |
| 455 | } /* End tw_check_errors() */ |
| 456 | |
| 457 | /* This function will empty the response que */ |
| 458 | static void tw_empty_response_que(TW_Device_Extension *tw_dev) |
| 459 | { |
| 460 | u32 status_reg_value, response_que_value; |
| 461 | |
| 462 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); |
| 463 | |
| 464 | while ((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) { |
| 465 | response_que_value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); |
| 466 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); |
| 467 | } |
| 468 | } /* End tw_empty_response_que() */ |
| 469 | |
| 470 | /* This function will free a request_id */ |
| 471 | static void tw_state_request_finish(TW_Device_Extension *tw_dev, int request_id) |
| 472 | { |
| 473 | tw_dev->free_queue[tw_dev->free_tail] = request_id; |
| 474 | tw_dev->state[request_id] = TW_S_FINISHED; |
| 475 | tw_dev->free_tail = (tw_dev->free_tail + 1) % TW_Q_LENGTH; |
| 476 | } /* End tw_state_request_finish() */ |
| 477 | |
| 478 | /* This function will assign an available request_id */ |
| 479 | static void tw_state_request_start(TW_Device_Extension *tw_dev, int *request_id) |
| 480 | { |
| 481 | *request_id = tw_dev->free_queue[tw_dev->free_head]; |
| 482 | tw_dev->free_head = (tw_dev->free_head + 1) % TW_Q_LENGTH; |
| 483 | tw_dev->state[*request_id] = TW_S_STARTED; |
| 484 | } /* End tw_state_request_start() */ |
| 485 | |
| 486 | /* Show some statistics about the card */ |
| 487 | static ssize_t tw_show_stats(struct class_device *class_dev, char *buf) |
| 488 | { |
| 489 | struct Scsi_Host *host = class_to_shost(class_dev); |
| 490 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; |
| 491 | unsigned long flags = 0; |
| 492 | ssize_t len; |
| 493 | |
| 494 | spin_lock_irqsave(tw_dev->host->host_lock, flags); |
| 495 | len = snprintf(buf, PAGE_SIZE, "3w-xxxx Driver version: %s\n" |
| 496 | "Current commands posted: %4d\n" |
| 497 | "Max commands posted: %4d\n" |
| 498 | "Current pending commands: %4d\n" |
| 499 | "Max pending commands: %4d\n" |
| 500 | "Last sgl length: %4d\n" |
| 501 | "Max sgl length: %4d\n" |
| 502 | "Last sector count: %4d\n" |
| 503 | "Max sector count: %4d\n" |
| 504 | "SCSI Host Resets: %4d\n" |
| 505 | "AEN's: %4d\n", |
| 506 | TW_DRIVER_VERSION, |
| 507 | tw_dev->posted_request_count, |
| 508 | tw_dev->max_posted_request_count, |
| 509 | tw_dev->pending_request_count, |
| 510 | tw_dev->max_pending_request_count, |
| 511 | tw_dev->sgl_entries, |
| 512 | tw_dev->max_sgl_entries, |
| 513 | tw_dev->sector_count, |
| 514 | tw_dev->max_sector_count, |
| 515 | tw_dev->num_resets, |
| 516 | tw_dev->aen_count); |
| 517 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); |
| 518 | return len; |
| 519 | } /* End tw_show_stats() */ |
| 520 | |
| 521 | /* This function will set a devices queue depth */ |
| 522 | static int tw_change_queue_depth(struct scsi_device *sdev, int queue_depth) |
| 523 | { |
| 524 | if (queue_depth > TW_Q_LENGTH-2) |
| 525 | queue_depth = TW_Q_LENGTH-2; |
| 526 | scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth); |
| 527 | return queue_depth; |
| 528 | } /* End tw_change_queue_depth() */ |
| 529 | |
| 530 | /* Create sysfs 'stats' entry */ |
| 531 | static struct class_device_attribute tw_host_stats_attr = { |
| 532 | .attr = { |
| 533 | .name = "stats", |
| 534 | .mode = S_IRUGO, |
| 535 | }, |
| 536 | .show = tw_show_stats |
| 537 | }; |
| 538 | |
| 539 | /* Host attributes initializer */ |
| 540 | static struct class_device_attribute *tw_host_attrs[] = { |
| 541 | &tw_host_stats_attr, |
| 542 | NULL, |
| 543 | }; |
| 544 | |
| 545 | /* This function will read the aen queue from the isr */ |
| 546 | static int tw_aen_read_queue(TW_Device_Extension *tw_dev, int request_id) |
| 547 | { |
| 548 | TW_Command *command_packet; |
| 549 | TW_Param *param; |
| 550 | unsigned long command_que_value; |
| 551 | u32 status_reg_value; |
| 552 | unsigned long param_value = 0; |
| 553 | |
| 554 | dprintk(KERN_NOTICE "3w-xxxx: tw_aen_read_queue()\n"); |
| 555 | |
| 556 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); |
| 557 | if (tw_check_bits(status_reg_value)) { |
| 558 | dprintk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Unexpected bits.\n"); |
| 559 | tw_decode_bits(tw_dev, status_reg_value, 1); |
| 560 | return 1; |
| 561 | } |
| 562 | if (tw_dev->command_packet_virtual_address[request_id] == NULL) { |
| 563 | printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Bad command packet virtual address.\n"); |
| 564 | return 1; |
| 565 | } |
| 566 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
| 567 | memset(command_packet, 0, sizeof(TW_Sector)); |
| 568 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); |
| 569 | command_packet->size = 4; |
| 570 | command_packet->request_id = request_id; |
| 571 | command_packet->status = 0; |
| 572 | command_packet->flags = 0; |
| 573 | command_packet->byte6.parameter_count = 1; |
| 574 | command_que_value = tw_dev->command_packet_physical_address[request_id]; |
| 575 | if (command_que_value == 0) { |
| 576 | printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Bad command packet physical address.\n"); |
| 577 | return 1; |
| 578 | } |
| 579 | /* Now setup the param */ |
| 580 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { |
| 581 | printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Bad alignment virtual address.\n"); |
| 582 | return 1; |
| 583 | } |
| 584 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
| 585 | memset(param, 0, sizeof(TW_Sector)); |
| 586 | param->table_id = 0x401; /* AEN table */ |
| 587 | param->parameter_id = 2; /* Unit code */ |
| 588 | param->parameter_size_bytes = 2; |
| 589 | param_value = tw_dev->alignment_physical_address[request_id]; |
| 590 | if (param_value == 0) { |
| 591 | printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Bad alignment physical address.\n"); |
| 592 | return 1; |
| 593 | } |
| 594 | command_packet->byte8.param.sgl[0].address = param_value; |
| 595 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); |
| 596 | |
| 597 | /* Now post the command packet */ |
| 598 | if ((status_reg_value & TW_STATUS_COMMAND_QUEUE_FULL) == 0) { |
| 599 | dprintk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Post succeeded.\n"); |
| 600 | tw_dev->srb[request_id] = NULL; /* Flag internal command */ |
| 601 | tw_dev->state[request_id] = TW_S_POSTED; |
| 602 | outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); |
| 603 | } else { |
| 604 | printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Post failed, will retry.\n"); |
| 605 | return 1; |
| 606 | } |
| 607 | |
| 608 | return 0; |
| 609 | } /* End tw_aen_read_queue() */ |
| 610 | |
| 611 | /* This function will complete an aen request from the isr */ |
| 612 | static int tw_aen_complete(TW_Device_Extension *tw_dev, int request_id) |
| 613 | { |
| 614 | TW_Param *param; |
| 615 | unsigned short aen; |
| 616 | int error = 0, table_max = 0; |
| 617 | |
| 618 | dprintk(KERN_WARNING "3w-xxxx: tw_aen_complete()\n"); |
| 619 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { |
| 620 | printk(KERN_WARNING "3w-xxxx: tw_aen_complete(): Bad alignment virtual address.\n"); |
| 621 | return 1; |
| 622 | } |
| 623 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
| 624 | aen = *(unsigned short *)(param->data); |
| 625 | dprintk(KERN_NOTICE "3w-xxxx: tw_aen_complete(): Queue'd code 0x%x\n", aen); |
| 626 | |
| 627 | /* Print some useful info when certain aen codes come out */ |
| 628 | if (aen == 0x0ff) { |
| 629 | printk(KERN_WARNING "3w-xxxx: scsi%d: AEN: INFO: AEN queue overflow.\n", tw_dev->host->host_no); |
| 630 | } else { |
Tobias Klauser | 6391a11 | 2006-06-08 22:23:48 -0700 | [diff] [blame] | 631 | table_max = ARRAY_SIZE(tw_aen_string); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 632 | if ((aen & 0x0ff) < table_max) { |
| 633 | if ((tw_aen_string[aen & 0xff][strlen(tw_aen_string[aen & 0xff])-1]) == '#') { |
| 634 | printk(KERN_WARNING "3w-xxxx: scsi%d: AEN: %s%d.\n", tw_dev->host->host_no, tw_aen_string[aen & 0xff], aen >> 8); |
| 635 | } else { |
| 636 | if (aen != 0x0) |
| 637 | printk(KERN_WARNING "3w-xxxx: scsi%d: AEN: %s.\n", tw_dev->host->host_no, tw_aen_string[aen & 0xff]); |
| 638 | } |
| 639 | } else { |
| 640 | printk(KERN_WARNING "3w-xxxx: scsi%d: Received AEN %d.\n", tw_dev->host->host_no, aen); |
| 641 | } |
| 642 | } |
| 643 | if (aen != TW_AEN_QUEUE_EMPTY) { |
| 644 | tw_dev->aen_count++; |
| 645 | |
| 646 | /* Now queue the code */ |
| 647 | tw_dev->aen_queue[tw_dev->aen_tail] = aen; |
| 648 | if (tw_dev->aen_tail == TW_Q_LENGTH - 1) { |
| 649 | tw_dev->aen_tail = TW_Q_START; |
| 650 | } else { |
| 651 | tw_dev->aen_tail = tw_dev->aen_tail + 1; |
| 652 | } |
| 653 | if (tw_dev->aen_head == tw_dev->aen_tail) { |
| 654 | if (tw_dev->aen_head == TW_Q_LENGTH - 1) { |
| 655 | tw_dev->aen_head = TW_Q_START; |
| 656 | } else { |
| 657 | tw_dev->aen_head = tw_dev->aen_head + 1; |
| 658 | } |
| 659 | } |
| 660 | |
| 661 | error = tw_aen_read_queue(tw_dev, request_id); |
| 662 | if (error) { |
| 663 | printk(KERN_WARNING "3w-xxxx: scsi%d: Error completing AEN.\n", tw_dev->host->host_no); |
| 664 | tw_dev->state[request_id] = TW_S_COMPLETED; |
| 665 | tw_state_request_finish(tw_dev, request_id); |
| 666 | } |
| 667 | } else { |
| 668 | tw_dev->state[request_id] = TW_S_COMPLETED; |
| 669 | tw_state_request_finish(tw_dev, request_id); |
| 670 | } |
| 671 | |
| 672 | return 0; |
| 673 | } /* End tw_aen_complete() */ |
| 674 | |
| 675 | /* This function will drain the aen queue after a soft reset */ |
| 676 | static int tw_aen_drain_queue(TW_Device_Extension *tw_dev) |
| 677 | { |
| 678 | TW_Command *command_packet; |
| 679 | TW_Param *param; |
| 680 | int request_id = 0; |
| 681 | unsigned long command_que_value; |
| 682 | unsigned long param_value; |
| 683 | TW_Response_Queue response_queue; |
| 684 | unsigned short aen; |
| 685 | unsigned short aen_code; |
| 686 | int finished = 0; |
| 687 | int first_reset = 0; |
| 688 | int queue = 0; |
| 689 | int found = 0, table_max = 0; |
| 690 | |
| 691 | dprintk(KERN_NOTICE "3w-xxxx: tw_aen_drain_queue()\n"); |
| 692 | |
| 693 | if (tw_poll_status(tw_dev, TW_STATUS_ATTENTION_INTERRUPT | TW_STATUS_MICROCONTROLLER_READY, 30)) { |
| 694 | dprintk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): No attention interrupt for card %d.\n", tw_device_extension_count); |
| 695 | return 1; |
| 696 | } |
| 697 | TW_CLEAR_ATTENTION_INTERRUPT(tw_dev); |
| 698 | |
| 699 | /* Empty response queue */ |
| 700 | tw_empty_response_que(tw_dev); |
| 701 | |
| 702 | /* Initialize command packet */ |
| 703 | if (tw_dev->command_packet_virtual_address[request_id] == NULL) { |
| 704 | printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad command packet virtual address.\n"); |
| 705 | return 1; |
| 706 | } |
| 707 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
| 708 | memset(command_packet, 0, sizeof(TW_Sector)); |
| 709 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); |
| 710 | command_packet->size = 4; |
| 711 | command_packet->request_id = request_id; |
| 712 | command_packet->status = 0; |
| 713 | command_packet->flags = 0; |
| 714 | command_packet->byte6.parameter_count = 1; |
| 715 | command_que_value = tw_dev->command_packet_physical_address[request_id]; |
| 716 | if (command_que_value == 0) { |
| 717 | printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad command packet physical address.\n"); |
| 718 | return 1; |
| 719 | } |
| 720 | |
| 721 | /* Now setup the param */ |
| 722 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { |
| 723 | printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad alignment virtual address.\n"); |
| 724 | return 1; |
| 725 | } |
| 726 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
| 727 | memset(param, 0, sizeof(TW_Sector)); |
| 728 | param->table_id = 0x401; /* AEN table */ |
| 729 | param->parameter_id = 2; /* Unit code */ |
| 730 | param->parameter_size_bytes = 2; |
| 731 | param_value = tw_dev->alignment_physical_address[request_id]; |
| 732 | if (param_value == 0) { |
| 733 | printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad alignment physical address.\n"); |
| 734 | return 1; |
| 735 | } |
| 736 | command_packet->byte8.param.sgl[0].address = param_value; |
| 737 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); |
| 738 | |
| 739 | /* Now drain the controller's aen queue */ |
| 740 | do { |
| 741 | /* Post command packet */ |
| 742 | outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); |
| 743 | |
| 744 | /* Now poll for completion */ |
| 745 | if (tw_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, 30) == 0) { |
| 746 | response_queue.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); |
| 747 | request_id = TW_RESID_OUT(response_queue.response_id); |
| 748 | |
| 749 | if (request_id != 0) { |
| 750 | /* Unexpected request id */ |
| 751 | printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Unexpected request id.\n"); |
| 752 | return 1; |
| 753 | } |
| 754 | |
| 755 | if (command_packet->status != 0) { |
| 756 | if (command_packet->flags != TW_AEN_TABLE_UNDEFINED) { |
| 757 | /* Bad response */ |
| 758 | tw_decode_sense(tw_dev, request_id, 0); |
| 759 | return 1; |
| 760 | } else { |
| 761 | /* We know this is a 3w-1x00, and doesn't support aen's */ |
| 762 | return 0; |
| 763 | } |
| 764 | } |
| 765 | |
| 766 | /* Now check the aen */ |
| 767 | aen = *(unsigned short *)(param->data); |
| 768 | aen_code = (aen & 0x0ff); |
| 769 | queue = 0; |
| 770 | switch (aen_code) { |
| 771 | case TW_AEN_QUEUE_EMPTY: |
| 772 | dprintk(KERN_WARNING "3w-xxxx: AEN: %s.\n", tw_aen_string[aen & 0xff]); |
| 773 | if (first_reset != 1) { |
| 774 | return 1; |
| 775 | } else { |
| 776 | finished = 1; |
| 777 | } |
| 778 | break; |
| 779 | case TW_AEN_SOFT_RESET: |
| 780 | if (first_reset == 0) { |
| 781 | first_reset = 1; |
| 782 | } else { |
| 783 | printk(KERN_WARNING "3w-xxxx: AEN: %s.\n", tw_aen_string[aen & 0xff]); |
| 784 | tw_dev->aen_count++; |
| 785 | queue = 1; |
| 786 | } |
| 787 | break; |
| 788 | default: |
| 789 | if (aen == 0x0ff) { |
| 790 | printk(KERN_WARNING "3w-xxxx: AEN: INFO: AEN queue overflow.\n"); |
| 791 | } else { |
Tobias Klauser | 6391a11 | 2006-06-08 22:23:48 -0700 | [diff] [blame] | 792 | table_max = ARRAY_SIZE(tw_aen_string); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | if ((aen & 0x0ff) < table_max) { |
| 794 | if ((tw_aen_string[aen & 0xff][strlen(tw_aen_string[aen & 0xff])-1]) == '#') { |
| 795 | printk(KERN_WARNING "3w-xxxx: AEN: %s%d.\n", tw_aen_string[aen & 0xff], aen >> 8); |
| 796 | } else { |
| 797 | printk(KERN_WARNING "3w-xxxx: AEN: %s.\n", tw_aen_string[aen & 0xff]); |
| 798 | } |
| 799 | } else |
| 800 | printk(KERN_WARNING "3w-xxxx: Received AEN %d.\n", aen); |
| 801 | } |
| 802 | tw_dev->aen_count++; |
| 803 | queue = 1; |
| 804 | } |
| 805 | |
| 806 | /* Now put the aen on the aen_queue */ |
| 807 | if (queue == 1) { |
| 808 | tw_dev->aen_queue[tw_dev->aen_tail] = aen; |
| 809 | if (tw_dev->aen_tail == TW_Q_LENGTH - 1) { |
| 810 | tw_dev->aen_tail = TW_Q_START; |
| 811 | } else { |
| 812 | tw_dev->aen_tail = tw_dev->aen_tail + 1; |
| 813 | } |
| 814 | if (tw_dev->aen_head == tw_dev->aen_tail) { |
| 815 | if (tw_dev->aen_head == TW_Q_LENGTH - 1) { |
| 816 | tw_dev->aen_head = TW_Q_START; |
| 817 | } else { |
| 818 | tw_dev->aen_head = tw_dev->aen_head + 1; |
| 819 | } |
| 820 | } |
| 821 | } |
| 822 | found = 1; |
| 823 | } |
| 824 | if (found == 0) { |
| 825 | printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Response never received.\n"); |
| 826 | return 1; |
| 827 | } |
| 828 | } while (finished == 0); |
| 829 | |
| 830 | return 0; |
| 831 | } /* End tw_aen_drain_queue() */ |
| 832 | |
| 833 | /* This function will allocate memory */ |
| 834 | static int tw_allocate_memory(TW_Device_Extension *tw_dev, int size, int which) |
| 835 | { |
| 836 | int i; |
| 837 | dma_addr_t dma_handle; |
| 838 | unsigned long *cpu_addr = NULL; |
| 839 | |
| 840 | dprintk(KERN_NOTICE "3w-xxxx: tw_allocate_memory()\n"); |
| 841 | |
| 842 | cpu_addr = pci_alloc_consistent(tw_dev->tw_pci_dev, size*TW_Q_LENGTH, &dma_handle); |
| 843 | if (cpu_addr == NULL) { |
| 844 | printk(KERN_WARNING "3w-xxxx: pci_alloc_consistent() failed.\n"); |
| 845 | return 1; |
| 846 | } |
| 847 | |
| 848 | if ((unsigned long)cpu_addr % (tw_dev->tw_pci_dev->device == TW_DEVICE_ID ? TW_ALIGNMENT_6000 : TW_ALIGNMENT_7000)) { |
| 849 | printk(KERN_WARNING "3w-xxxx: Couldn't allocate correctly aligned memory.\n"); |
| 850 | pci_free_consistent(tw_dev->tw_pci_dev, size*TW_Q_LENGTH, cpu_addr, dma_handle); |
| 851 | return 1; |
| 852 | } |
| 853 | |
| 854 | memset(cpu_addr, 0, size*TW_Q_LENGTH); |
| 855 | |
| 856 | for (i=0;i<TW_Q_LENGTH;i++) { |
| 857 | switch(which) { |
| 858 | case 0: |
| 859 | tw_dev->command_packet_physical_address[i] = dma_handle+(i*size); |
| 860 | tw_dev->command_packet_virtual_address[i] = (unsigned long *)((unsigned char *)cpu_addr + (i*size)); |
| 861 | break; |
| 862 | case 1: |
| 863 | tw_dev->alignment_physical_address[i] = dma_handle+(i*size); |
| 864 | tw_dev->alignment_virtual_address[i] = (unsigned long *)((unsigned char *)cpu_addr + (i*size)); |
| 865 | break; |
| 866 | default: |
| 867 | printk(KERN_WARNING "3w-xxxx: tw_allocate_memory(): case slip in tw_allocate_memory()\n"); |
| 868 | return 1; |
| 869 | } |
| 870 | } |
| 871 | |
| 872 | return 0; |
| 873 | } /* End tw_allocate_memory() */ |
| 874 | |
| 875 | /* This function handles ioctl for the character device */ |
| 876 | static int tw_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) |
| 877 | { |
| 878 | int request_id; |
| 879 | dma_addr_t dma_handle; |
| 880 | unsigned short tw_aen_code; |
| 881 | unsigned long flags; |
| 882 | unsigned int data_buffer_length = 0; |
| 883 | unsigned long data_buffer_length_adjusted = 0; |
| 884 | unsigned long *cpu_addr; |
| 885 | long timeout; |
| 886 | TW_New_Ioctl *tw_ioctl; |
| 887 | TW_Passthru *passthru; |
| 888 | TW_Device_Extension *tw_dev = tw_device_extension_list[iminor(inode)]; |
| 889 | int retval = -EFAULT; |
| 890 | void __user *argp = (void __user *)arg; |
| 891 | |
| 892 | dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl()\n"); |
| 893 | |
| 894 | /* Only let one of these through at a time */ |
Jes Sorensen | a12e25b | 2006-01-11 08:39:45 -0500 | [diff] [blame] | 895 | if (mutex_lock_interruptible(&tw_dev->ioctl_lock)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 896 | return -EINTR; |
| 897 | |
| 898 | /* First copy down the buffer length */ |
| 899 | if (copy_from_user(&data_buffer_length, argp, sizeof(unsigned int))) |
| 900 | goto out; |
| 901 | |
| 902 | /* Check size */ |
| 903 | if (data_buffer_length > TW_MAX_IOCTL_SECTORS * 512) { |
| 904 | retval = -EINVAL; |
| 905 | goto out; |
| 906 | } |
| 907 | |
| 908 | /* Hardware can only do multiple of 512 byte transfers */ |
| 909 | data_buffer_length_adjusted = (data_buffer_length + 511) & ~511; |
| 910 | |
| 911 | /* Now allocate ioctl buf memory */ |
| 912 | cpu_addr = dma_alloc_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted+sizeof(TW_New_Ioctl) - 1, &dma_handle, GFP_KERNEL); |
| 913 | if (cpu_addr == NULL) { |
| 914 | retval = -ENOMEM; |
| 915 | goto out; |
| 916 | } |
| 917 | |
| 918 | tw_ioctl = (TW_New_Ioctl *)cpu_addr; |
| 919 | |
| 920 | /* Now copy down the entire ioctl */ |
| 921 | if (copy_from_user(tw_ioctl, argp, data_buffer_length + sizeof(TW_New_Ioctl) - 1)) |
| 922 | goto out2; |
| 923 | |
| 924 | passthru = (TW_Passthru *)&tw_ioctl->firmware_command; |
| 925 | |
| 926 | /* See which ioctl we are doing */ |
| 927 | switch (cmd) { |
| 928 | case TW_OP_NOP: |
| 929 | dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl(): caught TW_OP_NOP.\n"); |
| 930 | break; |
| 931 | case TW_OP_AEN_LISTEN: |
| 932 | dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl(): caught TW_AEN_LISTEN.\n"); |
| 933 | memset(tw_ioctl->data_buffer, 0, data_buffer_length); |
| 934 | |
| 935 | spin_lock_irqsave(tw_dev->host->host_lock, flags); |
| 936 | if (tw_dev->aen_head == tw_dev->aen_tail) { |
| 937 | tw_aen_code = TW_AEN_QUEUE_EMPTY; |
| 938 | } else { |
| 939 | tw_aen_code = tw_dev->aen_queue[tw_dev->aen_head]; |
| 940 | if (tw_dev->aen_head == TW_Q_LENGTH - 1) { |
| 941 | tw_dev->aen_head = TW_Q_START; |
| 942 | } else { |
| 943 | tw_dev->aen_head = tw_dev->aen_head + 1; |
| 944 | } |
| 945 | } |
| 946 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); |
| 947 | memcpy(tw_ioctl->data_buffer, &tw_aen_code, sizeof(tw_aen_code)); |
| 948 | break; |
| 949 | case TW_CMD_PACKET_WITH_DATA: |
| 950 | dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl(): caught TW_CMD_PACKET_WITH_DATA.\n"); |
| 951 | spin_lock_irqsave(tw_dev->host->host_lock, flags); |
| 952 | |
| 953 | tw_state_request_start(tw_dev, &request_id); |
| 954 | |
| 955 | /* Flag internal command */ |
| 956 | tw_dev->srb[request_id] = NULL; |
| 957 | |
| 958 | /* Flag chrdev ioctl */ |
| 959 | tw_dev->chrdev_request_id = request_id; |
| 960 | |
| 961 | tw_ioctl->firmware_command.request_id = request_id; |
| 962 | |
| 963 | /* Load the sg list */ |
| 964 | switch (TW_SGL_OUT(tw_ioctl->firmware_command.opcode__sgloffset)) { |
| 965 | case 2: |
| 966 | tw_ioctl->firmware_command.byte8.param.sgl[0].address = dma_handle + sizeof(TW_New_Ioctl) - 1; |
| 967 | tw_ioctl->firmware_command.byte8.param.sgl[0].length = data_buffer_length_adjusted; |
| 968 | break; |
| 969 | case 3: |
| 970 | tw_ioctl->firmware_command.byte8.io.sgl[0].address = dma_handle + sizeof(TW_New_Ioctl) - 1; |
| 971 | tw_ioctl->firmware_command.byte8.io.sgl[0].length = data_buffer_length_adjusted; |
| 972 | break; |
| 973 | case 5: |
| 974 | passthru->sg_list[0].address = dma_handle + sizeof(TW_New_Ioctl) - 1; |
| 975 | passthru->sg_list[0].length = data_buffer_length_adjusted; |
| 976 | break; |
| 977 | } |
| 978 | |
| 979 | memcpy(tw_dev->command_packet_virtual_address[request_id], &(tw_ioctl->firmware_command), sizeof(TW_Command)); |
| 980 | |
| 981 | /* Now post the command packet to the controller */ |
| 982 | tw_post_command_packet(tw_dev, request_id); |
| 983 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); |
| 984 | |
| 985 | timeout = TW_IOCTL_CHRDEV_TIMEOUT*HZ; |
| 986 | |
| 987 | /* Now wait for the command to complete */ |
| 988 | timeout = wait_event_timeout(tw_dev->ioctl_wqueue, tw_dev->chrdev_request_id == TW_IOCTL_CHRDEV_FREE, timeout); |
| 989 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 990 | /* We timed out, and didn't get an interrupt */ |
| 991 | if (tw_dev->chrdev_request_id != TW_IOCTL_CHRDEV_FREE) { |
| 992 | /* Now we need to reset the board */ |
| 993 | printk(KERN_WARNING "3w-xxxx: scsi%d: Character ioctl (0x%x) timed out, resetting card.\n", tw_dev->host->host_no, cmd); |
| 994 | retval = -EIO; |
adam radford | 4fe4818 | 2007-01-04 18:16:56 -0800 | [diff] [blame] | 995 | if (tw_reset_device_extension(tw_dev)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 996 | printk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl(): Reset failed for card %d.\n", tw_dev->host->host_no); |
| 997 | } |
| 998 | goto out2; |
| 999 | } |
| 1000 | |
| 1001 | /* Now copy in the command packet response */ |
| 1002 | memcpy(&(tw_ioctl->firmware_command), tw_dev->command_packet_virtual_address[request_id], sizeof(TW_Command)); |
| 1003 | |
| 1004 | /* Now complete the io */ |
| 1005 | spin_lock_irqsave(tw_dev->host->host_lock, flags); |
| 1006 | tw_dev->posted_request_count--; |
| 1007 | tw_dev->state[request_id] = TW_S_COMPLETED; |
| 1008 | tw_state_request_finish(tw_dev, request_id); |
| 1009 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); |
| 1010 | break; |
| 1011 | default: |
| 1012 | retval = -ENOTTY; |
| 1013 | goto out2; |
| 1014 | } |
| 1015 | |
| 1016 | /* Now copy the response to userspace */ |
| 1017 | if (copy_to_user(argp, tw_ioctl, sizeof(TW_New_Ioctl) + data_buffer_length - 1)) |
| 1018 | goto out2; |
| 1019 | retval = 0; |
| 1020 | out2: |
| 1021 | /* Now free ioctl buf memory */ |
| 1022 | dma_free_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted+sizeof(TW_New_Ioctl) - 1, cpu_addr, dma_handle); |
| 1023 | out: |
Jes Sorensen | a12e25b | 2006-01-11 08:39:45 -0500 | [diff] [blame] | 1024 | mutex_unlock(&tw_dev->ioctl_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1025 | return retval; |
| 1026 | } /* End tw_chrdev_ioctl() */ |
| 1027 | |
| 1028 | /* This function handles open for the character device */ |
| 1029 | static int tw_chrdev_open(struct inode *inode, struct file *file) |
| 1030 | { |
| 1031 | unsigned int minor_number; |
| 1032 | |
| 1033 | dprintk(KERN_WARNING "3w-xxxx: tw_ioctl_open()\n"); |
| 1034 | |
| 1035 | minor_number = iminor(inode); |
| 1036 | if (minor_number >= tw_device_extension_count) |
| 1037 | return -ENODEV; |
| 1038 | |
| 1039 | return 0; |
| 1040 | } /* End tw_chrdev_open() */ |
| 1041 | |
| 1042 | /* File operations struct for character device */ |
Arjan van de Ven | 00977a5 | 2007-02-12 00:55:34 -0800 | [diff] [blame] | 1043 | static const struct file_operations tw_fops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1044 | .owner = THIS_MODULE, |
| 1045 | .ioctl = tw_chrdev_ioctl, |
| 1046 | .open = tw_chrdev_open, |
| 1047 | .release = NULL |
| 1048 | }; |
| 1049 | |
| 1050 | /* This function will free up device extension resources */ |
| 1051 | static void tw_free_device_extension(TW_Device_Extension *tw_dev) |
| 1052 | { |
| 1053 | dprintk(KERN_NOTICE "3w-xxxx: tw_free_device_extension()\n"); |
| 1054 | |
| 1055 | /* Free command packet and generic buffer memory */ |
| 1056 | if (tw_dev->command_packet_virtual_address[0]) |
| 1057 | pci_free_consistent(tw_dev->tw_pci_dev, sizeof(TW_Command)*TW_Q_LENGTH, tw_dev->command_packet_virtual_address[0], tw_dev->command_packet_physical_address[0]); |
| 1058 | |
| 1059 | if (tw_dev->alignment_virtual_address[0]) |
| 1060 | pci_free_consistent(tw_dev->tw_pci_dev, sizeof(TW_Sector)*TW_Q_LENGTH, tw_dev->alignment_virtual_address[0], tw_dev->alignment_physical_address[0]); |
| 1061 | } /* End tw_free_device_extension() */ |
| 1062 | |
| 1063 | /* This function will send an initconnection command to controller */ |
| 1064 | static int tw_initconnection(TW_Device_Extension *tw_dev, int message_credits) |
| 1065 | { |
| 1066 | unsigned long command_que_value; |
| 1067 | TW_Command *command_packet; |
| 1068 | TW_Response_Queue response_queue; |
| 1069 | int request_id = 0; |
| 1070 | |
| 1071 | dprintk(KERN_NOTICE "3w-xxxx: tw_initconnection()\n"); |
| 1072 | |
| 1073 | /* Initialize InitConnection command packet */ |
| 1074 | if (tw_dev->command_packet_virtual_address[request_id] == NULL) { |
| 1075 | printk(KERN_WARNING "3w-xxxx: tw_initconnection(): Bad command packet virtual address.\n"); |
| 1076 | return 1; |
| 1077 | } |
| 1078 | |
| 1079 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
| 1080 | memset(command_packet, 0, sizeof(TW_Sector)); |
| 1081 | command_packet->opcode__sgloffset = TW_OPSGL_IN(0, TW_OP_INIT_CONNECTION); |
| 1082 | command_packet->size = TW_INIT_COMMAND_PACKET_SIZE; |
| 1083 | command_packet->request_id = request_id; |
| 1084 | command_packet->status = 0x0; |
| 1085 | command_packet->flags = 0x0; |
| 1086 | command_packet->byte6.message_credits = message_credits; |
| 1087 | command_packet->byte8.init_connection.response_queue_pointer = 0x0; |
| 1088 | command_que_value = tw_dev->command_packet_physical_address[request_id]; |
| 1089 | |
| 1090 | if (command_que_value == 0) { |
| 1091 | printk(KERN_WARNING "3w-xxxx: tw_initconnection(): Bad command packet physical address.\n"); |
| 1092 | return 1; |
| 1093 | } |
| 1094 | |
| 1095 | /* Send command packet to the board */ |
| 1096 | outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); |
| 1097 | |
| 1098 | /* Poll for completion */ |
| 1099 | if (tw_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, 30) == 0) { |
| 1100 | response_queue.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); |
| 1101 | request_id = TW_RESID_OUT(response_queue.response_id); |
| 1102 | |
| 1103 | if (request_id != 0) { |
| 1104 | /* unexpected request id */ |
| 1105 | printk(KERN_WARNING "3w-xxxx: tw_initconnection(): Unexpected request id.\n"); |
| 1106 | return 1; |
| 1107 | } |
| 1108 | if (command_packet->status != 0) { |
| 1109 | /* bad response */ |
| 1110 | tw_decode_sense(tw_dev, request_id, 0); |
| 1111 | return 1; |
| 1112 | } |
| 1113 | } |
| 1114 | return 0; |
| 1115 | } /* End tw_initconnection() */ |
| 1116 | |
| 1117 | /* Set a value in the features table */ |
| 1118 | static int tw_setfeature(TW_Device_Extension *tw_dev, int parm, int param_size, |
| 1119 | unsigned char *val) |
| 1120 | { |
| 1121 | TW_Param *param; |
| 1122 | TW_Command *command_packet; |
| 1123 | TW_Response_Queue response_queue; |
| 1124 | int request_id = 0; |
| 1125 | unsigned long command_que_value; |
| 1126 | unsigned long param_value; |
| 1127 | |
| 1128 | /* Initialize SetParam command packet */ |
| 1129 | if (tw_dev->command_packet_virtual_address[request_id] == NULL) { |
| 1130 | printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Bad command packet virtual address.\n"); |
| 1131 | return 1; |
| 1132 | } |
| 1133 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
| 1134 | memset(command_packet, 0, sizeof(TW_Sector)); |
| 1135 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
| 1136 | |
| 1137 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_SET_PARAM); |
| 1138 | param->table_id = 0x404; /* Features table */ |
| 1139 | param->parameter_id = parm; |
| 1140 | param->parameter_size_bytes = param_size; |
| 1141 | memcpy(param->data, val, param_size); |
| 1142 | |
| 1143 | param_value = tw_dev->alignment_physical_address[request_id]; |
| 1144 | if (param_value == 0) { |
| 1145 | printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Bad alignment physical address.\n"); |
| 1146 | tw_dev->state[request_id] = TW_S_COMPLETED; |
| 1147 | tw_state_request_finish(tw_dev, request_id); |
| 1148 | tw_dev->srb[request_id]->result = (DID_OK << 16); |
| 1149 | tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]); |
| 1150 | } |
| 1151 | command_packet->byte8.param.sgl[0].address = param_value; |
| 1152 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); |
| 1153 | |
| 1154 | command_packet->size = 4; |
| 1155 | command_packet->request_id = request_id; |
| 1156 | command_packet->byte6.parameter_count = 1; |
| 1157 | |
| 1158 | command_que_value = tw_dev->command_packet_physical_address[request_id]; |
| 1159 | if (command_que_value == 0) { |
| 1160 | printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Bad command packet physical address.\n"); |
| 1161 | return 1; |
| 1162 | } |
| 1163 | |
| 1164 | /* Send command packet to the board */ |
| 1165 | outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); |
| 1166 | |
| 1167 | /* Poll for completion */ |
| 1168 | if (tw_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, 30) == 0) { |
| 1169 | response_queue.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); |
| 1170 | request_id = TW_RESID_OUT(response_queue.response_id); |
| 1171 | |
| 1172 | if (request_id != 0) { |
| 1173 | /* unexpected request id */ |
| 1174 | printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Unexpected request id.\n"); |
| 1175 | return 1; |
| 1176 | } |
| 1177 | if (command_packet->status != 0) { |
| 1178 | /* bad response */ |
| 1179 | tw_decode_sense(tw_dev, request_id, 0); |
| 1180 | return 1; |
| 1181 | } |
| 1182 | } |
| 1183 | |
| 1184 | return 0; |
| 1185 | } /* End tw_setfeature() */ |
| 1186 | |
| 1187 | /* This function will reset a controller */ |
| 1188 | static int tw_reset_sequence(TW_Device_Extension *tw_dev) |
| 1189 | { |
| 1190 | int error = 0; |
| 1191 | int tries = 0; |
| 1192 | unsigned char c = 1; |
| 1193 | |
| 1194 | /* Reset the board */ |
| 1195 | while (tries < TW_MAX_RESET_TRIES) { |
| 1196 | TW_SOFT_RESET(tw_dev); |
| 1197 | |
| 1198 | error = tw_aen_drain_queue(tw_dev); |
| 1199 | if (error) { |
| 1200 | printk(KERN_WARNING "3w-xxxx: scsi%d: AEN drain failed, retrying.\n", tw_dev->host->host_no); |
| 1201 | tries++; |
| 1202 | continue; |
| 1203 | } |
| 1204 | |
| 1205 | /* Check for controller errors */ |
| 1206 | if (tw_check_errors(tw_dev)) { |
| 1207 | printk(KERN_WARNING "3w-xxxx: scsi%d: Controller errors found, retrying.\n", tw_dev->host->host_no); |
| 1208 | tries++; |
| 1209 | continue; |
| 1210 | } |
| 1211 | |
| 1212 | /* Now the controller is in a good state */ |
| 1213 | break; |
| 1214 | } |
| 1215 | |
| 1216 | if (tries >= TW_MAX_RESET_TRIES) { |
| 1217 | printk(KERN_WARNING "3w-xxxx: scsi%d: Controller errors, card not responding, check all cabling.\n", tw_dev->host->host_no); |
| 1218 | return 1; |
| 1219 | } |
| 1220 | |
| 1221 | error = tw_initconnection(tw_dev, TW_INIT_MESSAGE_CREDITS); |
| 1222 | if (error) { |
| 1223 | printk(KERN_WARNING "3w-xxxx: scsi%d: Connection initialization failed.\n", tw_dev->host->host_no); |
| 1224 | return 1; |
| 1225 | } |
| 1226 | |
| 1227 | error = tw_setfeature(tw_dev, 2, 1, &c); |
| 1228 | if (error) { |
| 1229 | printk(KERN_WARNING "3w-xxxx: Unable to set features for card, probable old firmware or card.\n"); |
| 1230 | } |
| 1231 | |
| 1232 | return 0; |
| 1233 | } /* End tw_reset_sequence() */ |
| 1234 | |
| 1235 | /* This function will initialize the fields of a device extension */ |
| 1236 | static int tw_initialize_device_extension(TW_Device_Extension *tw_dev) |
| 1237 | { |
| 1238 | int i, error=0; |
| 1239 | |
| 1240 | dprintk(KERN_NOTICE "3w-xxxx: tw_initialize_device_extension()\n"); |
| 1241 | |
| 1242 | /* Initialize command packet buffers */ |
| 1243 | error = tw_allocate_memory(tw_dev, sizeof(TW_Command), 0); |
| 1244 | if (error) { |
| 1245 | printk(KERN_WARNING "3w-xxxx: Command packet memory allocation failed.\n"); |
| 1246 | return 1; |
| 1247 | } |
| 1248 | |
| 1249 | /* Initialize generic buffer */ |
| 1250 | error = tw_allocate_memory(tw_dev, sizeof(TW_Sector), 1); |
| 1251 | if (error) { |
| 1252 | printk(KERN_WARNING "3w-xxxx: Generic memory allocation failed.\n"); |
| 1253 | return 1; |
| 1254 | } |
| 1255 | |
| 1256 | for (i=0;i<TW_Q_LENGTH;i++) { |
| 1257 | tw_dev->free_queue[i] = i; |
| 1258 | tw_dev->state[i] = TW_S_INITIAL; |
| 1259 | } |
| 1260 | |
| 1261 | tw_dev->pending_head = TW_Q_START; |
| 1262 | tw_dev->pending_tail = TW_Q_START; |
| 1263 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; |
| 1264 | |
Jes Sorensen | a12e25b | 2006-01-11 08:39:45 -0500 | [diff] [blame] | 1265 | mutex_init(&tw_dev->ioctl_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1266 | init_waitqueue_head(&tw_dev->ioctl_wqueue); |
| 1267 | |
| 1268 | return 0; |
| 1269 | } /* End tw_initialize_device_extension() */ |
| 1270 | |
| 1271 | static int tw_map_scsi_sg_data(struct pci_dev *pdev, struct scsi_cmnd *cmd) |
| 1272 | { |
| 1273 | int use_sg; |
| 1274 | |
| 1275 | dprintk(KERN_WARNING "3w-xxxx: tw_map_scsi_sg_data()\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1276 | |
FUJITA Tomonori | 6edae70 | 2007-05-14 20:20:27 +0900 | [diff] [blame] | 1277 | use_sg = scsi_dma_map(cmd); |
| 1278 | if (use_sg < 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1279 | printk(KERN_WARNING "3w-xxxx: tw_map_scsi_sg_data(): pci_map_sg() failed.\n"); |
| 1280 | return 0; |
| 1281 | } |
| 1282 | |
| 1283 | cmd->SCp.phase = TW_PHASE_SGLIST; |
| 1284 | cmd->SCp.have_data_in = use_sg; |
FUJITA Tomonori | 6edae70 | 2007-05-14 20:20:27 +0900 | [diff] [blame] | 1285 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1286 | return use_sg; |
| 1287 | } /* End tw_map_scsi_sg_data() */ |
| 1288 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1289 | static void tw_unmap_scsi_data(struct pci_dev *pdev, struct scsi_cmnd *cmd) |
| 1290 | { |
| 1291 | dprintk(KERN_WARNING "3w-xxxx: tw_unmap_scsi_data()\n"); |
| 1292 | |
FUJITA Tomonori | 6edae70 | 2007-05-14 20:20:27 +0900 | [diff] [blame] | 1293 | scsi_dma_unmap(cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1294 | } /* End tw_unmap_scsi_data() */ |
| 1295 | |
| 1296 | /* This function will reset a device extension */ |
adam radford | 4fe4818 | 2007-01-04 18:16:56 -0800 | [diff] [blame] | 1297 | static int tw_reset_device_extension(TW_Device_Extension *tw_dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1298 | { |
| 1299 | int i = 0; |
| 1300 | struct scsi_cmnd *srb; |
| 1301 | unsigned long flags = 0; |
| 1302 | |
| 1303 | dprintk(KERN_NOTICE "3w-xxxx: tw_reset_device_extension()\n"); |
| 1304 | |
| 1305 | set_bit(TW_IN_RESET, &tw_dev->flags); |
| 1306 | TW_DISABLE_INTERRUPTS(tw_dev); |
| 1307 | TW_MASK_COMMAND_INTERRUPT(tw_dev); |
| 1308 | spin_lock_irqsave(tw_dev->host->host_lock, flags); |
| 1309 | |
| 1310 | /* Abort all requests that are in progress */ |
| 1311 | for (i=0;i<TW_Q_LENGTH;i++) { |
| 1312 | if ((tw_dev->state[i] != TW_S_FINISHED) && |
| 1313 | (tw_dev->state[i] != TW_S_INITIAL) && |
| 1314 | (tw_dev->state[i] != TW_S_COMPLETED)) { |
| 1315 | srb = tw_dev->srb[i]; |
| 1316 | if (srb != NULL) { |
| 1317 | srb->result = (DID_RESET << 16); |
| 1318 | tw_dev->srb[i]->scsi_done(tw_dev->srb[i]); |
| 1319 | tw_unmap_scsi_data(tw_dev->tw_pci_dev, tw_dev->srb[i]); |
| 1320 | } |
| 1321 | } |
| 1322 | } |
| 1323 | |
| 1324 | /* Reset queues and counts */ |
| 1325 | for (i=0;i<TW_Q_LENGTH;i++) { |
| 1326 | tw_dev->free_queue[i] = i; |
| 1327 | tw_dev->state[i] = TW_S_INITIAL; |
| 1328 | } |
| 1329 | tw_dev->free_head = TW_Q_START; |
| 1330 | tw_dev->free_tail = TW_Q_START; |
| 1331 | tw_dev->posted_request_count = 0; |
| 1332 | tw_dev->pending_request_count = 0; |
| 1333 | tw_dev->pending_head = TW_Q_START; |
| 1334 | tw_dev->pending_tail = TW_Q_START; |
| 1335 | tw_dev->reset_print = 0; |
| 1336 | |
| 1337 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); |
| 1338 | |
| 1339 | if (tw_reset_sequence(tw_dev)) { |
| 1340 | printk(KERN_WARNING "3w-xxxx: scsi%d: Reset sequence failed.\n", tw_dev->host->host_no); |
| 1341 | return 1; |
| 1342 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1343 | |
adam radford | 4fe4818 | 2007-01-04 18:16:56 -0800 | [diff] [blame] | 1344 | TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev); |
| 1345 | clear_bit(TW_IN_RESET, &tw_dev->flags); |
| 1346 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1347 | |
| 1348 | return 0; |
| 1349 | } /* End tw_reset_device_extension() */ |
| 1350 | |
| 1351 | /* This funciton returns unit geometry in cylinders/heads/sectors */ |
| 1352 | static int tw_scsi_biosparam(struct scsi_device *sdev, struct block_device *bdev, |
| 1353 | sector_t capacity, int geom[]) |
| 1354 | { |
| 1355 | int heads, sectors, cylinders; |
| 1356 | TW_Device_Extension *tw_dev; |
| 1357 | |
| 1358 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_biosparam()\n"); |
| 1359 | tw_dev = (TW_Device_Extension *)sdev->host->hostdata; |
| 1360 | |
| 1361 | heads = 64; |
| 1362 | sectors = 32; |
| 1363 | cylinders = sector_div(capacity, heads * sectors); |
| 1364 | |
| 1365 | if (capacity >= 0x200000) { |
| 1366 | heads = 255; |
| 1367 | sectors = 63; |
| 1368 | cylinders = sector_div(capacity, heads * sectors); |
| 1369 | } |
| 1370 | |
| 1371 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_biosparam(): heads = %d, sectors = %d, cylinders = %d\n", heads, sectors, cylinders); |
| 1372 | geom[0] = heads; |
| 1373 | geom[1] = sectors; |
| 1374 | geom[2] = cylinders; |
| 1375 | |
| 1376 | return 0; |
| 1377 | } /* End tw_scsi_biosparam() */ |
| 1378 | |
| 1379 | /* This is the new scsi eh reset function */ |
| 1380 | static int tw_scsi_eh_reset(struct scsi_cmnd *SCpnt) |
| 1381 | { |
| 1382 | TW_Device_Extension *tw_dev=NULL; |
| 1383 | int retval = FAILED; |
| 1384 | |
| 1385 | tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata; |
| 1386 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1387 | tw_dev->num_resets++; |
| 1388 | |
Jeff Garzik | 017560f | 2005-10-24 18:04:36 -0400 | [diff] [blame] | 1389 | sdev_printk(KERN_WARNING, SCpnt->device, |
| 1390 | "WARNING: Command (0x%x) timed out, resetting card.\n", |
| 1391 | SCpnt->cmnd[0]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1392 | |
adam radford | 4fe4818 | 2007-01-04 18:16:56 -0800 | [diff] [blame] | 1393 | /* Make sure we are not issuing an ioctl or resetting from ioctl */ |
| 1394 | mutex_lock(&tw_dev->ioctl_lock); |
| 1395 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1396 | /* Now reset the card and some of the device extension data */ |
adam radford | 4fe4818 | 2007-01-04 18:16:56 -0800 | [diff] [blame] | 1397 | if (tw_reset_device_extension(tw_dev)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1398 | printk(KERN_WARNING "3w-xxxx: scsi%d: Reset failed.\n", tw_dev->host->host_no); |
| 1399 | goto out; |
| 1400 | } |
| 1401 | |
| 1402 | retval = SUCCESS; |
| 1403 | out: |
adam radford | 4fe4818 | 2007-01-04 18:16:56 -0800 | [diff] [blame] | 1404 | mutex_unlock(&tw_dev->ioctl_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1405 | return retval; |
| 1406 | } /* End tw_scsi_eh_reset() */ |
| 1407 | |
| 1408 | /* This function handles scsi inquiry commands */ |
| 1409 | static int tw_scsiop_inquiry(TW_Device_Extension *tw_dev, int request_id) |
| 1410 | { |
| 1411 | TW_Param *param; |
| 1412 | TW_Command *command_packet; |
| 1413 | unsigned long command_que_value; |
| 1414 | unsigned long param_value; |
| 1415 | |
| 1416 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_inquiry()\n"); |
| 1417 | |
| 1418 | /* Initialize command packet */ |
| 1419 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
| 1420 | if (command_packet == NULL) { |
| 1421 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad command packet virtual address.\n"); |
| 1422 | return 1; |
| 1423 | } |
| 1424 | memset(command_packet, 0, sizeof(TW_Sector)); |
| 1425 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); |
| 1426 | command_packet->size = 4; |
| 1427 | command_packet->request_id = request_id; |
| 1428 | command_packet->status = 0; |
| 1429 | command_packet->flags = 0; |
| 1430 | command_packet->byte6.parameter_count = 1; |
| 1431 | |
| 1432 | /* Now setup the param */ |
| 1433 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { |
| 1434 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad alignment virtual address.\n"); |
| 1435 | return 1; |
| 1436 | } |
| 1437 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
| 1438 | memset(param, 0, sizeof(TW_Sector)); |
| 1439 | param->table_id = 3; /* unit summary table */ |
| 1440 | param->parameter_id = 3; /* unitsstatus parameter */ |
| 1441 | param->parameter_size_bytes = TW_MAX_UNITS; |
| 1442 | param_value = tw_dev->alignment_physical_address[request_id]; |
| 1443 | if (param_value == 0) { |
| 1444 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad alignment physical address.\n"); |
| 1445 | return 1; |
| 1446 | } |
| 1447 | |
| 1448 | command_packet->byte8.param.sgl[0].address = param_value; |
| 1449 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); |
| 1450 | command_que_value = tw_dev->command_packet_physical_address[request_id]; |
| 1451 | if (command_que_value == 0) { |
| 1452 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad command packet physical address.\n"); |
| 1453 | return 1; |
| 1454 | } |
| 1455 | |
| 1456 | /* Now try to post the command packet */ |
| 1457 | tw_post_command_packet(tw_dev, request_id); |
| 1458 | |
| 1459 | return 0; |
| 1460 | } /* End tw_scsiop_inquiry() */ |
| 1461 | |
James Bottomley | c9d297c | 2005-06-28 09:18:21 -0500 | [diff] [blame] | 1462 | static void tw_transfer_internal(TW_Device_Extension *tw_dev, int request_id, |
| 1463 | void *data, unsigned int len) |
| 1464 | { |
| 1465 | struct scsi_cmnd *cmd = tw_dev->srb[request_id]; |
FUJITA Tomonori | e943752 | 2008-03-09 13:44:36 +0900 | [diff] [blame] | 1466 | unsigned long flags; |
James Bottomley | c9d297c | 2005-06-28 09:18:21 -0500 | [diff] [blame] | 1467 | |
FUJITA Tomonori | 6edae70 | 2007-05-14 20:20:27 +0900 | [diff] [blame] | 1468 | local_irq_save(flags); |
FUJITA Tomonori | e943752 | 2008-03-09 13:44:36 +0900 | [diff] [blame] | 1469 | scsi_sg_copy_from_buffer(cmd, data, len); |
FUJITA Tomonori | 6edae70 | 2007-05-14 20:20:27 +0900 | [diff] [blame] | 1470 | local_irq_restore(flags); |
James Bottomley | c9d297c | 2005-06-28 09:18:21 -0500 | [diff] [blame] | 1471 | } |
| 1472 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1473 | /* This function is called by the isr to complete an inquiry command */ |
| 1474 | static int tw_scsiop_inquiry_complete(TW_Device_Extension *tw_dev, int request_id) |
| 1475 | { |
| 1476 | unsigned char *is_unit_present; |
James Bottomley | c9d297c | 2005-06-28 09:18:21 -0500 | [diff] [blame] | 1477 | unsigned char request_buffer[36]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1478 | TW_Param *param; |
| 1479 | |
| 1480 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_inquiry_complete()\n"); |
| 1481 | |
James Bottomley | c9d297c | 2005-06-28 09:18:21 -0500 | [diff] [blame] | 1482 | memset(request_buffer, 0, sizeof(request_buffer)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1483 | request_buffer[0] = TYPE_DISK; /* Peripheral device type */ |
| 1484 | request_buffer[1] = 0; /* Device type modifier */ |
| 1485 | request_buffer[2] = 0; /* No ansi/iso compliance */ |
| 1486 | request_buffer[4] = 31; /* Additional length */ |
| 1487 | memcpy(&request_buffer[8], "3ware ", 8); /* Vendor ID */ |
| 1488 | sprintf(&request_buffer[16], "Logical Disk %-2d ", tw_dev->srb[request_id]->device->id); |
| 1489 | memcpy(&request_buffer[32], TW_DRIVER_VERSION, 3); |
James Bottomley | c9d297c | 2005-06-28 09:18:21 -0500 | [diff] [blame] | 1490 | tw_transfer_internal(tw_dev, request_id, request_buffer, |
| 1491 | sizeof(request_buffer)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1492 | |
| 1493 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
| 1494 | if (param == NULL) { |
| 1495 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry_complete(): Bad alignment virtual address.\n"); |
| 1496 | return 1; |
| 1497 | } |
| 1498 | is_unit_present = &(param->data[0]); |
| 1499 | |
| 1500 | if (is_unit_present[tw_dev->srb[request_id]->device->id] & TW_UNIT_ONLINE) { |
| 1501 | tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = 1; |
| 1502 | } else { |
| 1503 | tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = 0; |
| 1504 | tw_dev->srb[request_id]->result = (DID_BAD_TARGET << 16); |
| 1505 | return TW_ISR_DONT_RESULT; |
| 1506 | } |
| 1507 | |
| 1508 | return 0; |
| 1509 | } /* End tw_scsiop_inquiry_complete() */ |
| 1510 | |
| 1511 | /* This function handles scsi mode_sense commands */ |
| 1512 | static int tw_scsiop_mode_sense(TW_Device_Extension *tw_dev, int request_id) |
| 1513 | { |
| 1514 | TW_Param *param; |
| 1515 | TW_Command *command_packet; |
| 1516 | unsigned long command_que_value; |
| 1517 | unsigned long param_value; |
| 1518 | |
| 1519 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_mode_sense()\n"); |
| 1520 | |
| 1521 | /* Only page control = 0, page code = 0x8 (cache page) supported */ |
| 1522 | if (tw_dev->srb[request_id]->cmnd[2] != 0x8) { |
| 1523 | tw_dev->state[request_id] = TW_S_COMPLETED; |
| 1524 | tw_state_request_finish(tw_dev, request_id); |
| 1525 | tw_dev->srb[request_id]->result = (DID_OK << 16); |
| 1526 | tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]); |
| 1527 | return 0; |
| 1528 | } |
| 1529 | |
| 1530 | /* Now read firmware cache setting for this unit */ |
| 1531 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
| 1532 | if (command_packet == NULL) { |
| 1533 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad command packet virtual address.\n"); |
| 1534 | return 1; |
| 1535 | } |
| 1536 | |
| 1537 | /* Setup the command packet */ |
| 1538 | memset(command_packet, 0, sizeof(TW_Sector)); |
| 1539 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); |
| 1540 | command_packet->size = 4; |
| 1541 | command_packet->request_id = request_id; |
| 1542 | command_packet->status = 0; |
| 1543 | command_packet->flags = 0; |
| 1544 | command_packet->byte6.parameter_count = 1; |
| 1545 | |
| 1546 | /* Setup the param */ |
| 1547 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { |
| 1548 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad alignment virtual address.\n"); |
| 1549 | return 1; |
| 1550 | } |
| 1551 | |
| 1552 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
| 1553 | memset(param, 0, sizeof(TW_Sector)); |
| 1554 | param->table_id = TW_UNIT_INFORMATION_TABLE_BASE + tw_dev->srb[request_id]->device->id; |
| 1555 | param->parameter_id = 7; /* unit flags */ |
| 1556 | param->parameter_size_bytes = 1; |
| 1557 | param_value = tw_dev->alignment_physical_address[request_id]; |
| 1558 | if (param_value == 0) { |
| 1559 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad alignment physical address.\n"); |
| 1560 | return 1; |
| 1561 | } |
| 1562 | |
| 1563 | command_packet->byte8.param.sgl[0].address = param_value; |
| 1564 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); |
| 1565 | command_que_value = tw_dev->command_packet_physical_address[request_id]; |
| 1566 | if (command_que_value == 0) { |
| 1567 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad command packet physical address.\n"); |
| 1568 | return 1; |
| 1569 | } |
| 1570 | |
| 1571 | /* Now try to post the command packet */ |
| 1572 | tw_post_command_packet(tw_dev, request_id); |
| 1573 | |
| 1574 | return 0; |
| 1575 | } /* End tw_scsiop_mode_sense() */ |
| 1576 | |
| 1577 | /* This function is called by the isr to complete a mode sense command */ |
| 1578 | static int tw_scsiop_mode_sense_complete(TW_Device_Extension *tw_dev, int request_id) |
| 1579 | { |
| 1580 | TW_Param *param; |
| 1581 | unsigned char *flags; |
James Bottomley | c9d297c | 2005-06-28 09:18:21 -0500 | [diff] [blame] | 1582 | unsigned char request_buffer[8]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1583 | |
| 1584 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_mode_sense_complete()\n"); |
| 1585 | |
| 1586 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
| 1587 | if (param == NULL) { |
| 1588 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense_complete(): Bad alignment virtual address.\n"); |
| 1589 | return 1; |
| 1590 | } |
| 1591 | flags = (char *)&(param->data[0]); |
James Bottomley | c9d297c | 2005-06-28 09:18:21 -0500 | [diff] [blame] | 1592 | memset(request_buffer, 0, sizeof(request_buffer)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1593 | |
| 1594 | request_buffer[0] = 0xf; /* mode data length */ |
| 1595 | request_buffer[1] = 0; /* default medium type */ |
| 1596 | request_buffer[2] = 0x10; /* dpo/fua support on */ |
| 1597 | request_buffer[3] = 0; /* no block descriptors */ |
| 1598 | request_buffer[4] = 0x8; /* caching page */ |
| 1599 | request_buffer[5] = 0xa; /* page length */ |
| 1600 | if (*flags & 0x1) |
adam radford | 4fe4818 | 2007-01-04 18:16:56 -0800 | [diff] [blame] | 1601 | request_buffer[6] = 0x5; /* WCE on, RCD on */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1602 | else |
adam radford | 4fe4818 | 2007-01-04 18:16:56 -0800 | [diff] [blame] | 1603 | request_buffer[6] = 0x1; /* WCE off, RCD on */ |
James Bottomley | c9d297c | 2005-06-28 09:18:21 -0500 | [diff] [blame] | 1604 | tw_transfer_internal(tw_dev, request_id, request_buffer, |
| 1605 | sizeof(request_buffer)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1606 | |
| 1607 | return 0; |
| 1608 | } /* End tw_scsiop_mode_sense_complete() */ |
| 1609 | |
| 1610 | /* This function handles scsi read_capacity commands */ |
| 1611 | static int tw_scsiop_read_capacity(TW_Device_Extension *tw_dev, int request_id) |
| 1612 | { |
| 1613 | TW_Param *param; |
| 1614 | TW_Command *command_packet; |
| 1615 | unsigned long command_que_value; |
| 1616 | unsigned long param_value; |
| 1617 | |
| 1618 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity()\n"); |
| 1619 | |
| 1620 | /* Initialize command packet */ |
| 1621 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
| 1622 | |
| 1623 | if (command_packet == NULL) { |
| 1624 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad command packet virtual address.\n"); |
| 1625 | return 1; |
| 1626 | } |
| 1627 | memset(command_packet, 0, sizeof(TW_Sector)); |
| 1628 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); |
| 1629 | command_packet->size = 4; |
| 1630 | command_packet->request_id = request_id; |
| 1631 | command_packet->unit__hostid = TW_UNITHOST_IN(0, tw_dev->srb[request_id]->device->id); |
| 1632 | command_packet->status = 0; |
| 1633 | command_packet->flags = 0; |
| 1634 | command_packet->byte6.block_count = 1; |
| 1635 | |
| 1636 | /* Now setup the param */ |
| 1637 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { |
| 1638 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad alignment virtual address.\n"); |
| 1639 | return 1; |
| 1640 | } |
| 1641 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
| 1642 | memset(param, 0, sizeof(TW_Sector)); |
| 1643 | param->table_id = TW_UNIT_INFORMATION_TABLE_BASE + |
| 1644 | tw_dev->srb[request_id]->device->id; |
| 1645 | param->parameter_id = 4; /* unitcapacity parameter */ |
| 1646 | param->parameter_size_bytes = 4; |
| 1647 | param_value = tw_dev->alignment_physical_address[request_id]; |
| 1648 | if (param_value == 0) { |
| 1649 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad alignment physical address.\n"); |
| 1650 | return 1; |
| 1651 | } |
| 1652 | |
| 1653 | command_packet->byte8.param.sgl[0].address = param_value; |
| 1654 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); |
| 1655 | command_que_value = tw_dev->command_packet_physical_address[request_id]; |
| 1656 | if (command_que_value == 0) { |
| 1657 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad command packet physical address.\n"); |
| 1658 | return 1; |
| 1659 | } |
| 1660 | |
| 1661 | /* Now try to post the command to the board */ |
| 1662 | tw_post_command_packet(tw_dev, request_id); |
| 1663 | |
| 1664 | return 0; |
| 1665 | } /* End tw_scsiop_read_capacity() */ |
| 1666 | |
| 1667 | /* This function is called by the isr to complete a readcapacity command */ |
| 1668 | static int tw_scsiop_read_capacity_complete(TW_Device_Extension *tw_dev, int request_id) |
| 1669 | { |
| 1670 | unsigned char *param_data; |
| 1671 | u32 capacity; |
James Bottomley | c9d297c | 2005-06-28 09:18:21 -0500 | [diff] [blame] | 1672 | char buff[8]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1673 | TW_Param *param; |
| 1674 | |
| 1675 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity_complete()\n"); |
| 1676 | |
James Bottomley | c9d297c | 2005-06-28 09:18:21 -0500 | [diff] [blame] | 1677 | memset(buff, 0, sizeof(buff)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1678 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
| 1679 | if (param == NULL) { |
| 1680 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_read_capacity_complete(): Bad alignment virtual address.\n"); |
| 1681 | return 1; |
| 1682 | } |
| 1683 | param_data = &(param->data[0]); |
| 1684 | |
| 1685 | capacity = (param_data[3] << 24) | (param_data[2] << 16) | |
| 1686 | (param_data[1] << 8) | param_data[0]; |
| 1687 | |
| 1688 | /* Subtract one sector to fix get last sector ioctl */ |
| 1689 | capacity -= 1; |
| 1690 | |
| 1691 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity_complete(): Capacity = 0x%x.\n", capacity); |
| 1692 | |
| 1693 | /* Number of LBA's */ |
| 1694 | buff[0] = (capacity >> 24); |
| 1695 | buff[1] = (capacity >> 16) & 0xff; |
| 1696 | buff[2] = (capacity >> 8) & 0xff; |
| 1697 | buff[3] = capacity & 0xff; |
| 1698 | |
| 1699 | /* Block size in bytes (512) */ |
| 1700 | buff[4] = (TW_BLOCK_SIZE >> 24); |
| 1701 | buff[5] = (TW_BLOCK_SIZE >> 16) & 0xff; |
| 1702 | buff[6] = (TW_BLOCK_SIZE >> 8) & 0xff; |
| 1703 | buff[7] = TW_BLOCK_SIZE & 0xff; |
| 1704 | |
James Bottomley | c9d297c | 2005-06-28 09:18:21 -0500 | [diff] [blame] | 1705 | tw_transfer_internal(tw_dev, request_id, buff, sizeof(buff)); |
| 1706 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1707 | return 0; |
| 1708 | } /* End tw_scsiop_read_capacity_complete() */ |
| 1709 | |
| 1710 | /* This function handles scsi read or write commands */ |
| 1711 | static int tw_scsiop_read_write(TW_Device_Extension *tw_dev, int request_id) |
| 1712 | { |
| 1713 | TW_Command *command_packet; |
| 1714 | unsigned long command_que_value; |
FUJITA Tomonori | 6edae70 | 2007-05-14 20:20:27 +0900 | [diff] [blame] | 1715 | u32 lba = 0x0, num_sectors = 0x0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1716 | int i, use_sg; |
| 1717 | struct scsi_cmnd *srb; |
FUJITA Tomonori | 6edae70 | 2007-05-14 20:20:27 +0900 | [diff] [blame] | 1718 | struct scatterlist *sglist, *sg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1719 | |
| 1720 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_write()\n"); |
| 1721 | |
FUJITA Tomonori | 6edae70 | 2007-05-14 20:20:27 +0900 | [diff] [blame] | 1722 | srb = tw_dev->srb[request_id]; |
| 1723 | |
| 1724 | sglist = scsi_sglist(srb); |
| 1725 | if (!sglist) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1726 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_read_write(): Request buffer NULL.\n"); |
| 1727 | return 1; |
| 1728 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1729 | |
| 1730 | /* Initialize command packet */ |
| 1731 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
| 1732 | if (command_packet == NULL) { |
| 1733 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_write(): Bad command packet virtual address.\n"); |
| 1734 | return 1; |
| 1735 | } |
| 1736 | |
| 1737 | if (srb->cmnd[0] == READ_6 || srb->cmnd[0] == READ_10) { |
| 1738 | command_packet->opcode__sgloffset = TW_OPSGL_IN(3, TW_OP_READ); |
| 1739 | } else { |
| 1740 | command_packet->opcode__sgloffset = TW_OPSGL_IN(3, TW_OP_WRITE); |
| 1741 | } |
| 1742 | |
| 1743 | command_packet->size = 3; |
| 1744 | command_packet->request_id = request_id; |
| 1745 | command_packet->unit__hostid = TW_UNITHOST_IN(0, srb->device->id); |
| 1746 | command_packet->status = 0; |
| 1747 | command_packet->flags = 0; |
| 1748 | |
| 1749 | if (srb->cmnd[0] == WRITE_10) { |
| 1750 | if ((srb->cmnd[1] & 0x8) || (srb->cmnd[1] & 0x10)) |
| 1751 | command_packet->flags = 1; |
| 1752 | } |
| 1753 | |
| 1754 | if (srb->cmnd[0] == READ_6 || srb->cmnd[0] == WRITE_6) { |
| 1755 | lba = ((u32)srb->cmnd[1] << 16) | ((u32)srb->cmnd[2] << 8) | (u32)srb->cmnd[3]; |
| 1756 | num_sectors = (u32)srb->cmnd[4]; |
| 1757 | } else { |
| 1758 | lba = ((u32)srb->cmnd[2] << 24) | ((u32)srb->cmnd[3] << 16) | ((u32)srb->cmnd[4] << 8) | (u32)srb->cmnd[5]; |
| 1759 | num_sectors = (u32)srb->cmnd[8] | ((u32)srb->cmnd[7] << 8); |
| 1760 | } |
| 1761 | |
| 1762 | /* Update sector statistic */ |
| 1763 | tw_dev->sector_count = num_sectors; |
| 1764 | if (tw_dev->sector_count > tw_dev->max_sector_count) |
| 1765 | tw_dev->max_sector_count = tw_dev->sector_count; |
| 1766 | |
| 1767 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_write(): lba = 0x%x num_sectors = 0x%x\n", lba, num_sectors); |
| 1768 | command_packet->byte8.io.lba = lba; |
| 1769 | command_packet->byte6.block_count = num_sectors; |
| 1770 | |
FUJITA Tomonori | 6edae70 | 2007-05-14 20:20:27 +0900 | [diff] [blame] | 1771 | use_sg = tw_map_scsi_sg_data(tw_dev->tw_pci_dev, tw_dev->srb[request_id]); |
| 1772 | if (!use_sg) |
| 1773 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1774 | |
FUJITA Tomonori | 6edae70 | 2007-05-14 20:20:27 +0900 | [diff] [blame] | 1775 | scsi_for_each_sg(tw_dev->srb[request_id], sg, use_sg, i) { |
| 1776 | command_packet->byte8.io.sgl[i].address = sg_dma_address(sg); |
| 1777 | command_packet->byte8.io.sgl[i].length = sg_dma_len(sg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1778 | command_packet->size+=2; |
| 1779 | } |
| 1780 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1781 | /* Update SG statistics */ |
FUJITA Tomonori | 6edae70 | 2007-05-14 20:20:27 +0900 | [diff] [blame] | 1782 | tw_dev->sgl_entries = scsi_sg_count(tw_dev->srb[request_id]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1783 | if (tw_dev->sgl_entries > tw_dev->max_sgl_entries) |
| 1784 | tw_dev->max_sgl_entries = tw_dev->sgl_entries; |
| 1785 | |
| 1786 | command_que_value = tw_dev->command_packet_physical_address[request_id]; |
| 1787 | if (command_que_value == 0) { |
| 1788 | dprintk(KERN_WARNING "3w-xxxx: tw_scsiop_read_write(): Bad command packet physical address.\n"); |
| 1789 | return 1; |
| 1790 | } |
| 1791 | |
| 1792 | /* Now try to post the command to the board */ |
| 1793 | tw_post_command_packet(tw_dev, request_id); |
| 1794 | |
| 1795 | return 0; |
| 1796 | } /* End tw_scsiop_read_write() */ |
| 1797 | |
| 1798 | /* This function will handle the request sense scsi command */ |
| 1799 | static int tw_scsiop_request_sense(TW_Device_Extension *tw_dev, int request_id) |
| 1800 | { |
James Bottomley | 6e3b2bb | 2007-04-06 11:14:56 -0500 | [diff] [blame] | 1801 | char request_buffer[18]; |
| 1802 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1803 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_request_sense()\n"); |
| 1804 | |
James Bottomley | 6e3b2bb | 2007-04-06 11:14:56 -0500 | [diff] [blame] | 1805 | memset(request_buffer, 0, sizeof(request_buffer)); |
| 1806 | request_buffer[0] = 0x70; /* Immediate fixed format */ |
| 1807 | request_buffer[7] = 10; /* minimum size per SPC: 18 bytes */ |
| 1808 | /* leave all other fields zero, giving effectively NO_SENSE return */ |
| 1809 | tw_transfer_internal(tw_dev, request_id, request_buffer, |
| 1810 | sizeof(request_buffer)); |
| 1811 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1812 | tw_dev->state[request_id] = TW_S_COMPLETED; |
| 1813 | tw_state_request_finish(tw_dev, request_id); |
| 1814 | |
| 1815 | /* If we got a request_sense, we probably want a reset, return error */ |
| 1816 | tw_dev->srb[request_id]->result = (DID_ERROR << 16); |
| 1817 | tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]); |
| 1818 | |
| 1819 | return 0; |
| 1820 | } /* End tw_scsiop_request_sense() */ |
| 1821 | |
| 1822 | /* This function will handle synchronize cache scsi command */ |
| 1823 | static int tw_scsiop_synchronize_cache(TW_Device_Extension *tw_dev, int request_id) |
| 1824 | { |
| 1825 | TW_Command *command_packet; |
| 1826 | unsigned long command_que_value; |
| 1827 | |
| 1828 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_synchronize_cache()\n"); |
| 1829 | |
| 1830 | /* Send firmware flush command for this unit */ |
| 1831 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
| 1832 | if (command_packet == NULL) { |
| 1833 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_synchronize_cache(): Bad command packet virtual address.\n"); |
| 1834 | return 1; |
| 1835 | } |
| 1836 | |
| 1837 | /* Setup the command packet */ |
| 1838 | memset(command_packet, 0, sizeof(TW_Sector)); |
| 1839 | command_packet->opcode__sgloffset = TW_OPSGL_IN(0, TW_OP_FLUSH_CACHE); |
| 1840 | command_packet->size = 2; |
| 1841 | command_packet->request_id = request_id; |
| 1842 | command_packet->unit__hostid = TW_UNITHOST_IN(0, tw_dev->srb[request_id]->device->id); |
| 1843 | command_packet->status = 0; |
| 1844 | command_packet->flags = 0; |
| 1845 | command_packet->byte6.parameter_count = 1; |
| 1846 | command_que_value = tw_dev->command_packet_physical_address[request_id]; |
| 1847 | if (command_que_value == 0) { |
| 1848 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_synchronize_cache(): Bad command packet physical address.\n"); |
| 1849 | return 1; |
| 1850 | } |
| 1851 | |
| 1852 | /* Now try to post the command packet */ |
| 1853 | tw_post_command_packet(tw_dev, request_id); |
| 1854 | |
| 1855 | return 0; |
| 1856 | } /* End tw_scsiop_synchronize_cache() */ |
| 1857 | |
| 1858 | /* This function will handle test unit ready scsi command */ |
| 1859 | static int tw_scsiop_test_unit_ready(TW_Device_Extension *tw_dev, int request_id) |
| 1860 | { |
| 1861 | TW_Param *param; |
| 1862 | TW_Command *command_packet; |
| 1863 | unsigned long command_que_value; |
| 1864 | unsigned long param_value; |
| 1865 | |
| 1866 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_test_unit_ready()\n"); |
| 1867 | |
| 1868 | /* Initialize command packet */ |
| 1869 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
| 1870 | if (command_packet == NULL) { |
| 1871 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad command packet virtual address.\n"); |
| 1872 | return 1; |
| 1873 | } |
| 1874 | memset(command_packet, 0, sizeof(TW_Sector)); |
| 1875 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); |
| 1876 | command_packet->size = 4; |
| 1877 | command_packet->request_id = request_id; |
| 1878 | command_packet->status = 0; |
| 1879 | command_packet->flags = 0; |
| 1880 | command_packet->byte6.parameter_count = 1; |
| 1881 | |
| 1882 | /* Now setup the param */ |
| 1883 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { |
| 1884 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad alignment virtual address.\n"); |
| 1885 | return 1; |
| 1886 | } |
| 1887 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
| 1888 | memset(param, 0, sizeof(TW_Sector)); |
| 1889 | param->table_id = 3; /* unit summary table */ |
| 1890 | param->parameter_id = 3; /* unitsstatus parameter */ |
| 1891 | param->parameter_size_bytes = TW_MAX_UNITS; |
| 1892 | param_value = tw_dev->alignment_physical_address[request_id]; |
| 1893 | if (param_value == 0) { |
| 1894 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad alignment physical address.\n"); |
| 1895 | return 1; |
| 1896 | } |
| 1897 | |
| 1898 | command_packet->byte8.param.sgl[0].address = param_value; |
| 1899 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); |
| 1900 | command_que_value = tw_dev->command_packet_physical_address[request_id]; |
| 1901 | if (command_que_value == 0) { |
| 1902 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad command packet physical address.\n"); |
| 1903 | return 1; |
| 1904 | } |
| 1905 | |
| 1906 | /* Now try to post the command packet */ |
| 1907 | tw_post_command_packet(tw_dev, request_id); |
| 1908 | |
| 1909 | return 0; |
| 1910 | } /* End tw_scsiop_test_unit_ready() */ |
| 1911 | |
| 1912 | /* This function is called by the isr to complete a testunitready command */ |
| 1913 | static int tw_scsiop_test_unit_ready_complete(TW_Device_Extension *tw_dev, int request_id) |
| 1914 | { |
| 1915 | unsigned char *is_unit_present; |
| 1916 | TW_Param *param; |
| 1917 | |
| 1918 | dprintk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready_complete()\n"); |
| 1919 | |
| 1920 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
| 1921 | if (param == NULL) { |
| 1922 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready_complete(): Bad alignment virtual address.\n"); |
| 1923 | return 1; |
| 1924 | } |
| 1925 | is_unit_present = &(param->data[0]); |
| 1926 | |
| 1927 | if (is_unit_present[tw_dev->srb[request_id]->device->id] & TW_UNIT_ONLINE) { |
| 1928 | tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = 1; |
| 1929 | } else { |
| 1930 | tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = 0; |
| 1931 | tw_dev->srb[request_id]->result = (DID_BAD_TARGET << 16); |
| 1932 | return TW_ISR_DONT_RESULT; |
| 1933 | } |
| 1934 | |
| 1935 | return 0; |
| 1936 | } /* End tw_scsiop_test_unit_ready_complete() */ |
| 1937 | |
| 1938 | /* This is the main scsi queue function to handle scsi opcodes */ |
| 1939 | static int tw_scsi_queue(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *)) |
| 1940 | { |
| 1941 | unsigned char *command = SCpnt->cmnd; |
| 1942 | int request_id = 0; |
| 1943 | int retval = 1; |
| 1944 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata; |
| 1945 | |
adam radford | 4fe4818 | 2007-01-04 18:16:56 -0800 | [diff] [blame] | 1946 | /* If we are resetting due to timed out ioctl, report as busy */ |
| 1947 | if (test_bit(TW_IN_RESET, &tw_dev->flags)) |
| 1948 | return SCSI_MLQUEUE_HOST_BUSY; |
| 1949 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1950 | /* Save done function into Scsi_Cmnd struct */ |
| 1951 | SCpnt->scsi_done = done; |
| 1952 | |
| 1953 | /* Queue the command and get a request id */ |
| 1954 | tw_state_request_start(tw_dev, &request_id); |
| 1955 | |
| 1956 | /* Save the scsi command for use by the ISR */ |
| 1957 | tw_dev->srb[request_id] = SCpnt; |
| 1958 | |
| 1959 | /* Initialize phase to zero */ |
| 1960 | SCpnt->SCp.phase = TW_PHASE_INITIAL; |
| 1961 | |
| 1962 | switch (*command) { |
| 1963 | case READ_10: |
| 1964 | case READ_6: |
| 1965 | case WRITE_10: |
| 1966 | case WRITE_6: |
| 1967 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught READ/WRITE.\n"); |
| 1968 | retval = tw_scsiop_read_write(tw_dev, request_id); |
| 1969 | break; |
| 1970 | case TEST_UNIT_READY: |
| 1971 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught TEST_UNIT_READY.\n"); |
| 1972 | retval = tw_scsiop_test_unit_ready(tw_dev, request_id); |
| 1973 | break; |
| 1974 | case INQUIRY: |
| 1975 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught INQUIRY.\n"); |
| 1976 | retval = tw_scsiop_inquiry(tw_dev, request_id); |
| 1977 | break; |
| 1978 | case READ_CAPACITY: |
| 1979 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught READ_CAPACITY.\n"); |
| 1980 | retval = tw_scsiop_read_capacity(tw_dev, request_id); |
| 1981 | break; |
| 1982 | case REQUEST_SENSE: |
| 1983 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught REQUEST_SENSE.\n"); |
| 1984 | retval = tw_scsiop_request_sense(tw_dev, request_id); |
| 1985 | break; |
| 1986 | case MODE_SENSE: |
| 1987 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught MODE_SENSE.\n"); |
| 1988 | retval = tw_scsiop_mode_sense(tw_dev, request_id); |
| 1989 | break; |
| 1990 | case SYNCHRONIZE_CACHE: |
| 1991 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught SYNCHRONIZE_CACHE.\n"); |
| 1992 | retval = tw_scsiop_synchronize_cache(tw_dev, request_id); |
| 1993 | break; |
| 1994 | case TW_IOCTL: |
| 1995 | printk(KERN_WARNING "3w-xxxx: SCSI_IOCTL_SEND_COMMAND deprecated, please update your 3ware tools.\n"); |
| 1996 | break; |
| 1997 | default: |
| 1998 | printk(KERN_NOTICE "3w-xxxx: scsi%d: Unknown scsi opcode: 0x%x\n", tw_dev->host->host_no, *command); |
| 1999 | tw_dev->state[request_id] = TW_S_COMPLETED; |
| 2000 | tw_state_request_finish(tw_dev, request_id); |
| 2001 | SCpnt->result = (DID_BAD_TARGET << 16); |
| 2002 | done(SCpnt); |
| 2003 | retval = 0; |
| 2004 | } |
| 2005 | if (retval) { |
| 2006 | tw_dev->state[request_id] = TW_S_COMPLETED; |
| 2007 | tw_state_request_finish(tw_dev, request_id); |
| 2008 | SCpnt->result = (DID_ERROR << 16); |
| 2009 | done(SCpnt); |
| 2010 | retval = 0; |
| 2011 | } |
| 2012 | return retval; |
| 2013 | } /* End tw_scsi_queue() */ |
| 2014 | |
| 2015 | /* This function is the interrupt service routine */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 2016 | static irqreturn_t tw_interrupt(int irq, void *dev_instance) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2017 | { |
| 2018 | int request_id; |
| 2019 | u32 status_reg_value; |
| 2020 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)dev_instance; |
| 2021 | TW_Response_Queue response_que; |
| 2022 | int error = 0, retval = 0; |
| 2023 | TW_Command *command_packet; |
| 2024 | int handled = 0; |
| 2025 | |
| 2026 | /* Get the host lock for io completions */ |
| 2027 | spin_lock(tw_dev->host->host_lock); |
| 2028 | |
| 2029 | /* Read the registers */ |
| 2030 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); |
| 2031 | |
| 2032 | /* Check if this is our interrupt, otherwise bail */ |
| 2033 | if (!(status_reg_value & TW_STATUS_VALID_INTERRUPT)) |
| 2034 | goto tw_interrupt_bail; |
| 2035 | |
| 2036 | handled = 1; |
| 2037 | |
adam radford | 4fe4818 | 2007-01-04 18:16:56 -0800 | [diff] [blame] | 2038 | /* If we are resetting, bail */ |
| 2039 | if (test_bit(TW_IN_RESET, &tw_dev->flags)) |
| 2040 | goto tw_interrupt_bail; |
| 2041 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2042 | /* Check controller for errors */ |
| 2043 | if (tw_check_bits(status_reg_value)) { |
| 2044 | dprintk(KERN_WARNING "3w-xxxx: tw_interrupt(): Unexpected bits.\n"); |
| 2045 | if (tw_decode_bits(tw_dev, status_reg_value, 1)) { |
| 2046 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); |
| 2047 | goto tw_interrupt_bail; |
| 2048 | } |
| 2049 | } |
| 2050 | |
| 2051 | /* Handle host interrupt */ |
| 2052 | if (status_reg_value & TW_STATUS_HOST_INTERRUPT) { |
| 2053 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): Received host interrupt.\n"); |
| 2054 | TW_CLEAR_HOST_INTERRUPT(tw_dev); |
| 2055 | } |
| 2056 | |
| 2057 | /* Handle attention interrupt */ |
| 2058 | if (status_reg_value & TW_STATUS_ATTENTION_INTERRUPT) { |
| 2059 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): Received attention interrupt.\n"); |
| 2060 | TW_CLEAR_ATTENTION_INTERRUPT(tw_dev); |
| 2061 | tw_state_request_start(tw_dev, &request_id); |
| 2062 | error = tw_aen_read_queue(tw_dev, request_id); |
| 2063 | if (error) { |
| 2064 | printk(KERN_WARNING "3w-xxxx: scsi%d: Error reading aen queue.\n", tw_dev->host->host_no); |
| 2065 | tw_dev->state[request_id] = TW_S_COMPLETED; |
| 2066 | tw_state_request_finish(tw_dev, request_id); |
| 2067 | } |
| 2068 | } |
| 2069 | |
| 2070 | /* Handle command interrupt */ |
| 2071 | if (status_reg_value & TW_STATUS_COMMAND_INTERRUPT) { |
| 2072 | /* Drain as many pending commands as we can */ |
| 2073 | while (tw_dev->pending_request_count > 0) { |
| 2074 | request_id = tw_dev->pending_queue[tw_dev->pending_head]; |
| 2075 | if (tw_dev->state[request_id] != TW_S_PENDING) { |
| 2076 | printk(KERN_WARNING "3w-xxxx: scsi%d: Found request id that wasn't pending.\n", tw_dev->host->host_no); |
| 2077 | break; |
| 2078 | } |
| 2079 | if (tw_post_command_packet(tw_dev, request_id)==0) { |
| 2080 | if (tw_dev->pending_head == TW_Q_LENGTH-1) { |
| 2081 | tw_dev->pending_head = TW_Q_START; |
| 2082 | } else { |
| 2083 | tw_dev->pending_head = tw_dev->pending_head + 1; |
| 2084 | } |
| 2085 | tw_dev->pending_request_count--; |
| 2086 | } else { |
| 2087 | /* If we get here, we will continue re-posting on the next command interrupt */ |
| 2088 | break; |
| 2089 | } |
| 2090 | } |
| 2091 | /* If there are no more pending requests, we mask command interrupt */ |
| 2092 | if (tw_dev->pending_request_count == 0) |
| 2093 | TW_MASK_COMMAND_INTERRUPT(tw_dev); |
| 2094 | } |
| 2095 | |
| 2096 | /* Handle response interrupt */ |
| 2097 | if (status_reg_value & TW_STATUS_RESPONSE_INTERRUPT) { |
| 2098 | /* Drain the response queue from the board */ |
| 2099 | while ((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) { |
| 2100 | /* Read response queue register */ |
| 2101 | response_que.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); |
| 2102 | request_id = TW_RESID_OUT(response_que.response_id); |
| 2103 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
| 2104 | error = 0; |
| 2105 | |
| 2106 | /* Check for bad response */ |
| 2107 | if (command_packet->status != 0) { |
| 2108 | /* If internal command, don't error, don't fill sense */ |
| 2109 | if (tw_dev->srb[request_id] == NULL) { |
| 2110 | tw_decode_sense(tw_dev, request_id, 0); |
| 2111 | } else { |
| 2112 | error = tw_decode_sense(tw_dev, request_id, 1); |
| 2113 | } |
| 2114 | } |
| 2115 | |
| 2116 | /* Check for correct state */ |
| 2117 | if (tw_dev->state[request_id] != TW_S_POSTED) { |
| 2118 | if (tw_dev->srb[request_id] != NULL) { |
| 2119 | printk(KERN_WARNING "3w-xxxx: scsi%d: Received a request id that wasn't posted.\n", tw_dev->host->host_no); |
| 2120 | error = 1; |
| 2121 | } |
| 2122 | } |
| 2123 | |
| 2124 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): Response queue request id: %d.\n", request_id); |
| 2125 | |
| 2126 | /* Check for internal command completion */ |
| 2127 | if (tw_dev->srb[request_id] == NULL) { |
| 2128 | dprintk(KERN_WARNING "3w-xxxx: tw_interrupt(): Found internally posted command.\n"); |
| 2129 | /* Check for chrdev ioctl completion */ |
| 2130 | if (request_id != tw_dev->chrdev_request_id) { |
| 2131 | retval = tw_aen_complete(tw_dev, request_id); |
| 2132 | if (retval) { |
| 2133 | printk(KERN_WARNING "3w-xxxx: scsi%d: Error completing aen.\n", tw_dev->host->host_no); |
| 2134 | } |
| 2135 | } else { |
| 2136 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; |
| 2137 | wake_up(&tw_dev->ioctl_wqueue); |
| 2138 | } |
| 2139 | } else { |
| 2140 | switch (tw_dev->srb[request_id]->cmnd[0]) { |
| 2141 | case READ_10: |
| 2142 | case READ_6: |
| 2143 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught READ_10/READ_6\n"); |
| 2144 | break; |
| 2145 | case WRITE_10: |
| 2146 | case WRITE_6: |
| 2147 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught WRITE_10/WRITE_6\n"); |
| 2148 | break; |
| 2149 | case TEST_UNIT_READY: |
| 2150 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught TEST_UNIT_READY\n"); |
| 2151 | error = tw_scsiop_test_unit_ready_complete(tw_dev, request_id); |
| 2152 | break; |
| 2153 | case INQUIRY: |
| 2154 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught INQUIRY\n"); |
| 2155 | error = tw_scsiop_inquiry_complete(tw_dev, request_id); |
| 2156 | break; |
| 2157 | case READ_CAPACITY: |
| 2158 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught READ_CAPACITY\n"); |
| 2159 | error = tw_scsiop_read_capacity_complete(tw_dev, request_id); |
| 2160 | break; |
| 2161 | case MODE_SENSE: |
| 2162 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught MODE_SENSE\n"); |
| 2163 | error = tw_scsiop_mode_sense_complete(tw_dev, request_id); |
| 2164 | break; |
| 2165 | case SYNCHRONIZE_CACHE: |
| 2166 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught SYNCHRONIZE_CACHE\n"); |
| 2167 | break; |
| 2168 | default: |
| 2169 | printk(KERN_WARNING "3w-xxxx: case slip in tw_interrupt()\n"); |
| 2170 | error = 1; |
| 2171 | } |
| 2172 | |
| 2173 | /* If no error command was a success */ |
| 2174 | if (error == 0) { |
| 2175 | tw_dev->srb[request_id]->result = (DID_OK << 16); |
| 2176 | } |
| 2177 | |
| 2178 | /* If error, command failed */ |
| 2179 | if (error == 1) { |
| 2180 | /* Ask for a host reset */ |
| 2181 | tw_dev->srb[request_id]->result = (DID_OK << 16) | (CHECK_CONDITION << 1); |
| 2182 | } |
| 2183 | |
| 2184 | /* Now complete the io */ |
| 2185 | if ((error != TW_ISR_DONT_COMPLETE)) { |
| 2186 | tw_dev->state[request_id] = TW_S_COMPLETED; |
| 2187 | tw_state_request_finish(tw_dev, request_id); |
| 2188 | tw_dev->posted_request_count--; |
| 2189 | tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]); |
| 2190 | |
| 2191 | tw_unmap_scsi_data(tw_dev->tw_pci_dev, tw_dev->srb[request_id]); |
| 2192 | } |
| 2193 | } |
| 2194 | |
| 2195 | /* Check for valid status after each drain */ |
| 2196 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); |
| 2197 | if (tw_check_bits(status_reg_value)) { |
| 2198 | dprintk(KERN_WARNING "3w-xxxx: tw_interrupt(): Unexpected bits.\n"); |
| 2199 | if (tw_decode_bits(tw_dev, status_reg_value, 1)) { |
| 2200 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); |
| 2201 | goto tw_interrupt_bail; |
| 2202 | } |
| 2203 | } |
| 2204 | } |
| 2205 | } |
| 2206 | |
| 2207 | tw_interrupt_bail: |
| 2208 | spin_unlock(tw_dev->host->host_lock); |
| 2209 | return IRQ_RETVAL(handled); |
| 2210 | } /* End tw_interrupt() */ |
| 2211 | |
| 2212 | /* This function tells the controller to shut down */ |
| 2213 | static void __tw_shutdown(TW_Device_Extension *tw_dev) |
| 2214 | { |
| 2215 | /* Disable interrupts */ |
| 2216 | TW_DISABLE_INTERRUPTS(tw_dev); |
| 2217 | |
adam radford | 4fe4818 | 2007-01-04 18:16:56 -0800 | [diff] [blame] | 2218 | /* Free up the IRQ */ |
| 2219 | free_irq(tw_dev->tw_pci_dev->irq, tw_dev); |
| 2220 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2221 | printk(KERN_WARNING "3w-xxxx: Shutting down host %d.\n", tw_dev->host->host_no); |
| 2222 | |
| 2223 | /* Tell the card we are shutting down */ |
| 2224 | if (tw_initconnection(tw_dev, 1)) { |
| 2225 | printk(KERN_WARNING "3w-xxxx: Connection shutdown failed.\n"); |
| 2226 | } else { |
| 2227 | printk(KERN_WARNING "3w-xxxx: Shutdown complete.\n"); |
| 2228 | } |
| 2229 | |
| 2230 | /* Clear all interrupts just before exit */ |
| 2231 | TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev); |
| 2232 | } /* End __tw_shutdown() */ |
| 2233 | |
| 2234 | /* Wrapper for __tw_shutdown */ |
Greg Kroah-Hartman | d18c3db | 2005-06-23 17:35:56 -0700 | [diff] [blame] | 2235 | static void tw_shutdown(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2236 | { |
Greg Kroah-Hartman | d18c3db | 2005-06-23 17:35:56 -0700 | [diff] [blame] | 2237 | struct Scsi_Host *host = pci_get_drvdata(pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2238 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; |
| 2239 | |
| 2240 | __tw_shutdown(tw_dev); |
| 2241 | } /* End tw_shutdown() */ |
| 2242 | |
| 2243 | static struct scsi_host_template driver_template = { |
| 2244 | .module = THIS_MODULE, |
| 2245 | .name = "3ware Storage Controller", |
| 2246 | .queuecommand = tw_scsi_queue, |
| 2247 | .eh_host_reset_handler = tw_scsi_eh_reset, |
| 2248 | .bios_param = tw_scsi_biosparam, |
| 2249 | .change_queue_depth = tw_change_queue_depth, |
| 2250 | .can_queue = TW_Q_LENGTH-2, |
| 2251 | .this_id = -1, |
| 2252 | .sg_tablesize = TW_MAX_SGL_LENGTH, |
| 2253 | .max_sectors = TW_MAX_SECTORS, |
| 2254 | .cmd_per_lun = TW_MAX_CMDS_PER_LUN, |
| 2255 | .use_clustering = ENABLE_CLUSTERING, |
| 2256 | .shost_attrs = tw_host_attrs, |
| 2257 | .emulated = 1 |
| 2258 | }; |
| 2259 | |
| 2260 | /* This function will probe and initialize a card */ |
| 2261 | static int __devinit tw_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id) |
| 2262 | { |
| 2263 | struct Scsi_Host *host = NULL; |
| 2264 | TW_Device_Extension *tw_dev; |
| 2265 | int retval = -ENODEV; |
| 2266 | |
| 2267 | retval = pci_enable_device(pdev); |
| 2268 | if (retval) { |
| 2269 | printk(KERN_WARNING "3w-xxxx: Failed to enable pci device."); |
| 2270 | goto out_disable_device; |
| 2271 | } |
| 2272 | |
| 2273 | pci_set_master(pdev); |
| 2274 | |
| 2275 | retval = pci_set_dma_mask(pdev, TW_DMA_MASK); |
| 2276 | if (retval) { |
| 2277 | printk(KERN_WARNING "3w-xxxx: Failed to set dma mask."); |
| 2278 | goto out_disable_device; |
| 2279 | } |
| 2280 | |
| 2281 | host = scsi_host_alloc(&driver_template, sizeof(TW_Device_Extension)); |
| 2282 | if (!host) { |
| 2283 | printk(KERN_WARNING "3w-xxxx: Failed to allocate memory for device extension."); |
| 2284 | retval = -ENOMEM; |
| 2285 | goto out_disable_device; |
| 2286 | } |
| 2287 | tw_dev = (TW_Device_Extension *)host->hostdata; |
| 2288 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2289 | /* Save values to device extension */ |
| 2290 | tw_dev->host = host; |
| 2291 | tw_dev->tw_pci_dev = pdev; |
| 2292 | |
| 2293 | if (tw_initialize_device_extension(tw_dev)) { |
| 2294 | printk(KERN_WARNING "3w-xxxx: Failed to initialize device extension."); |
| 2295 | goto out_free_device_extension; |
| 2296 | } |
| 2297 | |
| 2298 | /* Request IO regions */ |
| 2299 | retval = pci_request_regions(pdev, "3w-xxxx"); |
| 2300 | if (retval) { |
| 2301 | printk(KERN_WARNING "3w-xxxx: Failed to get mem region."); |
| 2302 | goto out_free_device_extension; |
| 2303 | } |
| 2304 | |
| 2305 | /* Save base address */ |
| 2306 | tw_dev->base_addr = pci_resource_start(pdev, 0); |
| 2307 | if (!tw_dev->base_addr) { |
| 2308 | printk(KERN_WARNING "3w-xxxx: Failed to get io address."); |
| 2309 | goto out_release_mem_region; |
| 2310 | } |
| 2311 | |
| 2312 | /* Disable interrupts on the card */ |
| 2313 | TW_DISABLE_INTERRUPTS(tw_dev); |
| 2314 | |
| 2315 | /* Initialize the card */ |
| 2316 | if (tw_reset_sequence(tw_dev)) |
| 2317 | goto out_release_mem_region; |
| 2318 | |
| 2319 | /* Set host specific parameters */ |
| 2320 | host->max_id = TW_MAX_UNITS; |
| 2321 | host->max_cmd_len = TW_MAX_CDB_LEN; |
| 2322 | |
| 2323 | /* Luns and channels aren't supported by adapter */ |
| 2324 | host->max_lun = 0; |
| 2325 | host->max_channel = 0; |
| 2326 | |
| 2327 | /* Register the card with the kernel SCSI layer */ |
| 2328 | retval = scsi_add_host(host, &pdev->dev); |
| 2329 | if (retval) { |
| 2330 | printk(KERN_WARNING "3w-xxxx: scsi add host failed"); |
| 2331 | goto out_release_mem_region; |
| 2332 | } |
| 2333 | |
| 2334 | pci_set_drvdata(pdev, host); |
| 2335 | |
| 2336 | printk(KERN_WARNING "3w-xxxx: scsi%d: Found a 3ware Storage Controller at 0x%x, IRQ: %d.\n", host->host_no, tw_dev->base_addr, pdev->irq); |
| 2337 | |
| 2338 | /* Now setup the interrupt handler */ |
Thomas Gleixner | 1d6f359 | 2006-07-01 19:29:42 -0700 | [diff] [blame] | 2339 | retval = request_irq(pdev->irq, tw_interrupt, IRQF_SHARED, "3w-xxxx", tw_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2340 | if (retval) { |
| 2341 | printk(KERN_WARNING "3w-xxxx: Error requesting IRQ."); |
| 2342 | goto out_remove_host; |
| 2343 | } |
| 2344 | |
| 2345 | tw_device_extension_list[tw_device_extension_count] = tw_dev; |
| 2346 | tw_device_extension_count++; |
| 2347 | |
| 2348 | /* Re-enable interrupts on the card */ |
| 2349 | TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev); |
| 2350 | |
| 2351 | /* Finally, scan the host */ |
| 2352 | scsi_scan_host(host); |
| 2353 | |
| 2354 | if (twe_major == -1) { |
| 2355 | if ((twe_major = register_chrdev (0, "twe", &tw_fops)) < 0) |
| 2356 | printk(KERN_WARNING "3w-xxxx: Failed to register character device."); |
| 2357 | } |
| 2358 | return 0; |
| 2359 | |
| 2360 | out_remove_host: |
| 2361 | scsi_remove_host(host); |
| 2362 | out_release_mem_region: |
| 2363 | pci_release_regions(pdev); |
| 2364 | out_free_device_extension: |
| 2365 | tw_free_device_extension(tw_dev); |
| 2366 | scsi_host_put(host); |
| 2367 | out_disable_device: |
| 2368 | pci_disable_device(pdev); |
| 2369 | |
| 2370 | return retval; |
| 2371 | } /* End tw_probe() */ |
| 2372 | |
| 2373 | /* This function is called to remove a device */ |
| 2374 | static void tw_remove(struct pci_dev *pdev) |
| 2375 | { |
| 2376 | struct Scsi_Host *host = pci_get_drvdata(pdev); |
| 2377 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; |
| 2378 | |
| 2379 | scsi_remove_host(tw_dev->host); |
| 2380 | |
| 2381 | /* Unregister character device */ |
| 2382 | if (twe_major >= 0) { |
| 2383 | unregister_chrdev(twe_major, "twe"); |
| 2384 | twe_major = -1; |
| 2385 | } |
| 2386 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2387 | /* Shutdown the card */ |
| 2388 | __tw_shutdown(tw_dev); |
| 2389 | |
| 2390 | /* Free up the mem region */ |
| 2391 | pci_release_regions(pdev); |
| 2392 | |
| 2393 | /* Free up device extension resources */ |
| 2394 | tw_free_device_extension(tw_dev); |
| 2395 | |
| 2396 | scsi_host_put(tw_dev->host); |
| 2397 | pci_disable_device(pdev); |
| 2398 | tw_device_extension_count--; |
| 2399 | } /* End tw_remove() */ |
| 2400 | |
| 2401 | /* PCI Devices supported by this driver */ |
| 2402 | static struct pci_device_id tw_pci_tbl[] __devinitdata = { |
| 2403 | { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_1000, |
| 2404 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
| 2405 | { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_7000, |
| 2406 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
| 2407 | { } |
| 2408 | }; |
| 2409 | MODULE_DEVICE_TABLE(pci, tw_pci_tbl); |
| 2410 | |
| 2411 | /* pci_driver initializer */ |
| 2412 | static struct pci_driver tw_driver = { |
| 2413 | .name = "3w-xxxx", |
| 2414 | .id_table = tw_pci_tbl, |
| 2415 | .probe = tw_probe, |
| 2416 | .remove = tw_remove, |
Greg Kroah-Hartman | d18c3db | 2005-06-23 17:35:56 -0700 | [diff] [blame] | 2417 | .shutdown = tw_shutdown, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2418 | }; |
| 2419 | |
| 2420 | /* This function is called on driver initialization */ |
| 2421 | static int __init tw_init(void) |
| 2422 | { |
| 2423 | printk(KERN_WARNING "3ware Storage Controller device driver for Linux v%s.\n", TW_DRIVER_VERSION); |
| 2424 | |
Henrik Kretzschmar | dcbccbde | 2006-09-25 16:58:58 -0700 | [diff] [blame] | 2425 | return pci_register_driver(&tw_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2426 | } /* End tw_init() */ |
| 2427 | |
| 2428 | /* This function is called on driver exit */ |
| 2429 | static void __exit tw_exit(void) |
| 2430 | { |
| 2431 | pci_unregister_driver(&tw_driver); |
| 2432 | } /* End tw_exit() */ |
| 2433 | |
| 2434 | module_init(tw_init); |
| 2435 | module_exit(tw_exit); |
| 2436 | |