Bradley Grove | 26780d9 | 2013-08-23 10:35:45 -0400 | [diff] [blame] | 1 | /* |
| 2 | * linux/drivers/scsi/esas2r/esas2r_main.c |
| 3 | * For use with ATTO ExpressSAS R6xx SAS/SATA RAID controllers |
| 4 | * |
| 5 | * Copyright (c) 2001-2013 ATTO Technology, Inc. |
| 6 | * (mailto:linuxdrivers@attotech.com) |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License |
| 10 | * as published by the Free Software Foundation; either version 2 |
| 11 | * of the License, or (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * NO WARRANTY |
| 19 | * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR |
| 20 | * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT |
| 21 | * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, |
| 22 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is |
| 23 | * solely responsible for determining the appropriateness of using and |
| 24 | * distributing the Program and assumes all risks associated with its |
| 25 | * exercise of rights under this Agreement, including but not limited to |
| 26 | * the risks and costs of program errors, damage to or loss of data, |
| 27 | * programs or equipment, and unavailability or interruption of operations. |
| 28 | * |
| 29 | * DISCLAIMER OF LIABILITY |
| 30 | * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY |
| 31 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 32 | * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND |
| 33 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR |
| 34 | * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE |
| 35 | * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED |
| 36 | * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES |
| 37 | * |
| 38 | * You should have received a copy of the GNU General Public License |
| 39 | * along with this program; if not, write to the Free Software |
| 40 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, |
| 41 | * USA. |
| 42 | */ |
| 43 | |
| 44 | #include "esas2r.h" |
| 45 | |
| 46 | MODULE_DESCRIPTION(ESAS2R_DRVR_NAME ": " ESAS2R_LONGNAME " driver"); |
| 47 | MODULE_AUTHOR("ATTO Technology, Inc."); |
| 48 | MODULE_LICENSE("GPL"); |
| 49 | MODULE_VERSION(ESAS2R_VERSION_STR); |
| 50 | |
| 51 | /* global definitions */ |
| 52 | |
| 53 | static int found_adapters; |
| 54 | struct esas2r_adapter *esas2r_adapters[MAX_ADAPTERS]; |
| 55 | |
| 56 | #define ESAS2R_VDA_EVENT_PORT1 54414 |
| 57 | #define ESAS2R_VDA_EVENT_PORT2 54415 |
| 58 | #define ESAS2R_VDA_EVENT_SOCK_COUNT 2 |
| 59 | |
| 60 | static struct esas2r_adapter *esas2r_adapter_from_kobj(struct kobject *kobj) |
| 61 | { |
| 62 | struct device *dev = container_of(kobj, struct device, kobj); |
| 63 | struct Scsi_Host *host = class_to_shost(dev); |
| 64 | |
| 65 | return (struct esas2r_adapter *)host->hostdata; |
| 66 | } |
| 67 | |
| 68 | static ssize_t read_fw(struct file *file, struct kobject *kobj, |
| 69 | struct bin_attribute *attr, |
| 70 | char *buf, loff_t off, size_t count) |
| 71 | { |
| 72 | struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); |
| 73 | |
| 74 | return esas2r_read_fw(a, buf, off, count); |
| 75 | } |
| 76 | |
| 77 | static ssize_t write_fw(struct file *file, struct kobject *kobj, |
| 78 | struct bin_attribute *attr, |
| 79 | char *buf, loff_t off, size_t count) |
| 80 | { |
| 81 | struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); |
| 82 | |
| 83 | return esas2r_write_fw(a, buf, off, count); |
| 84 | } |
| 85 | |
| 86 | static ssize_t read_fs(struct file *file, struct kobject *kobj, |
| 87 | struct bin_attribute *attr, |
| 88 | char *buf, loff_t off, size_t count) |
| 89 | { |
| 90 | struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); |
| 91 | |
| 92 | return esas2r_read_fs(a, buf, off, count); |
| 93 | } |
| 94 | |
| 95 | static ssize_t write_fs(struct file *file, struct kobject *kobj, |
| 96 | struct bin_attribute *attr, |
| 97 | char *buf, loff_t off, size_t count) |
| 98 | { |
| 99 | struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); |
| 100 | int length = min(sizeof(struct esas2r_ioctl_fs), count); |
| 101 | int result = 0; |
| 102 | |
| 103 | result = esas2r_write_fs(a, buf, off, count); |
| 104 | |
| 105 | if (result < 0) |
| 106 | result = 0; |
| 107 | |
| 108 | return length; |
| 109 | } |
| 110 | |
| 111 | static ssize_t read_vda(struct file *file, struct kobject *kobj, |
| 112 | struct bin_attribute *attr, |
| 113 | char *buf, loff_t off, size_t count) |
| 114 | { |
| 115 | struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); |
| 116 | |
| 117 | return esas2r_read_vda(a, buf, off, count); |
| 118 | } |
| 119 | |
| 120 | static ssize_t write_vda(struct file *file, struct kobject *kobj, |
| 121 | struct bin_attribute *attr, |
| 122 | char *buf, loff_t off, size_t count) |
| 123 | { |
| 124 | struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); |
| 125 | |
| 126 | return esas2r_write_vda(a, buf, off, count); |
| 127 | } |
| 128 | |
| 129 | static ssize_t read_live_nvram(struct file *file, struct kobject *kobj, |
| 130 | struct bin_attribute *attr, |
| 131 | char *buf, loff_t off, size_t count) |
| 132 | { |
| 133 | struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); |
| 134 | int length = min_t(size_t, sizeof(struct esas2r_sas_nvram), PAGE_SIZE); |
| 135 | |
| 136 | memcpy(buf, a->nvram, length); |
| 137 | return length; |
| 138 | } |
| 139 | |
| 140 | static ssize_t write_live_nvram(struct file *file, struct kobject *kobj, |
| 141 | struct bin_attribute *attr, |
| 142 | char *buf, loff_t off, size_t count) |
| 143 | { |
| 144 | struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); |
| 145 | struct esas2r_request *rq; |
| 146 | int result = -EFAULT; |
| 147 | |
| 148 | rq = esas2r_alloc_request(a); |
| 149 | if (rq == NULL) |
| 150 | return -ENOMEM; |
| 151 | |
| 152 | if (esas2r_write_params(a, rq, (struct esas2r_sas_nvram *)buf)) |
| 153 | result = count; |
| 154 | |
| 155 | esas2r_free_request(a, rq); |
| 156 | |
| 157 | return result; |
| 158 | } |
| 159 | |
| 160 | static ssize_t read_default_nvram(struct file *file, struct kobject *kobj, |
| 161 | struct bin_attribute *attr, |
| 162 | char *buf, loff_t off, size_t count) |
| 163 | { |
| 164 | struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); |
| 165 | |
| 166 | esas2r_nvram_get_defaults(a, (struct esas2r_sas_nvram *)buf); |
| 167 | |
| 168 | return sizeof(struct esas2r_sas_nvram); |
| 169 | } |
| 170 | |
| 171 | static ssize_t read_hw(struct file *file, struct kobject *kobj, |
| 172 | struct bin_attribute *attr, |
| 173 | char *buf, loff_t off, size_t count) |
| 174 | { |
| 175 | struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); |
| 176 | int length = min_t(size_t, sizeof(struct atto_ioctl), PAGE_SIZE); |
| 177 | |
| 178 | if (!a->local_atto_ioctl) |
| 179 | return -ENOMEM; |
| 180 | |
| 181 | if (handle_hba_ioctl(a, a->local_atto_ioctl) != IOCTL_SUCCESS) |
| 182 | return -ENOMEM; |
| 183 | |
| 184 | memcpy(buf, a->local_atto_ioctl, length); |
| 185 | |
| 186 | return length; |
| 187 | } |
| 188 | |
| 189 | static ssize_t write_hw(struct file *file, struct kobject *kobj, |
| 190 | struct bin_attribute *attr, |
| 191 | char *buf, loff_t off, size_t count) |
| 192 | { |
| 193 | struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); |
| 194 | int length = min(sizeof(struct atto_ioctl), count); |
| 195 | |
| 196 | if (!a->local_atto_ioctl) { |
| 197 | a->local_atto_ioctl = kzalloc(sizeof(struct atto_ioctl), |
| 198 | GFP_KERNEL); |
| 199 | if (a->local_atto_ioctl == NULL) { |
| 200 | esas2r_log(ESAS2R_LOG_WARN, |
| 201 | "write_hw kzalloc failed for %d bytes", |
| 202 | sizeof(struct atto_ioctl)); |
| 203 | return -ENOMEM; |
| 204 | } |
| 205 | } |
| 206 | |
| 207 | memset(a->local_atto_ioctl, 0, sizeof(struct atto_ioctl)); |
| 208 | memcpy(a->local_atto_ioctl, buf, length); |
| 209 | |
| 210 | return length; |
| 211 | } |
| 212 | |
| 213 | #define ESAS2R_RW_BIN_ATTR(_name) \ |
| 214 | struct bin_attribute bin_attr_ ## _name = { \ |
| 215 | .attr = \ |
| 216 | { .name = __stringify(_name), .mode = S_IRUSR | S_IWUSR }, \ |
| 217 | .size = 0, \ |
| 218 | .read = read_ ## _name, \ |
| 219 | .write = write_ ## _name } |
| 220 | |
| 221 | ESAS2R_RW_BIN_ATTR(fw); |
| 222 | ESAS2R_RW_BIN_ATTR(fs); |
| 223 | ESAS2R_RW_BIN_ATTR(vda); |
| 224 | ESAS2R_RW_BIN_ATTR(hw); |
| 225 | ESAS2R_RW_BIN_ATTR(live_nvram); |
| 226 | |
| 227 | struct bin_attribute bin_attr_default_nvram = { |
| 228 | .attr = { .name = "default_nvram", .mode = S_IRUGO }, |
| 229 | .size = 0, |
| 230 | .read = read_default_nvram, |
| 231 | .write = NULL |
| 232 | }; |
| 233 | |
| 234 | static struct scsi_host_template driver_template = { |
| 235 | .module = THIS_MODULE, |
| 236 | .show_info = esas2r_show_info, |
| 237 | .name = ESAS2R_LONGNAME, |
| 238 | .release = esas2r_release, |
| 239 | .info = esas2r_info, |
| 240 | .ioctl = esas2r_ioctl, |
| 241 | .queuecommand = esas2r_queuecommand, |
| 242 | .eh_abort_handler = esas2r_eh_abort, |
| 243 | .eh_device_reset_handler = esas2r_device_reset, |
| 244 | .eh_bus_reset_handler = esas2r_bus_reset, |
| 245 | .eh_host_reset_handler = esas2r_host_reset, |
| 246 | .eh_target_reset_handler = esas2r_target_reset, |
| 247 | .can_queue = 128, |
| 248 | .this_id = -1, |
| 249 | .sg_tablesize = SCSI_MAX_SG_SEGMENTS, |
| 250 | .cmd_per_lun = |
| 251 | ESAS2R_DEFAULT_CMD_PER_LUN, |
| 252 | .present = 0, |
| 253 | .unchecked_isa_dma = 0, |
| 254 | .use_clustering = ENABLE_CLUSTERING, |
| 255 | .emulated = 0, |
| 256 | .proc_name = ESAS2R_DRVR_NAME, |
Christoph Hellwig | db5ed4d | 2014-11-13 15:08:42 +0100 | [diff] [blame] | 257 | .change_queue_depth = scsi_change_queue_depth, |
Bradley Grove | 26780d9 | 2013-08-23 10:35:45 -0400 | [diff] [blame] | 258 | .max_sectors = 0xFFFF, |
| 259 | }; |
| 260 | |
| 261 | int sgl_page_size = 512; |
| 262 | module_param(sgl_page_size, int, 0); |
| 263 | MODULE_PARM_DESC(sgl_page_size, |
| 264 | "Scatter/gather list (SGL) page size in number of S/G " |
| 265 | "entries. If your application is doing a lot of very large " |
| 266 | "transfers, you may want to increase the SGL page size. " |
| 267 | "Default 512."); |
| 268 | |
| 269 | int num_sg_lists = 1024; |
| 270 | module_param(num_sg_lists, int, 0); |
| 271 | MODULE_PARM_DESC(num_sg_lists, |
| 272 | "Number of scatter/gather lists. Default 1024."); |
| 273 | |
| 274 | int sg_tablesize = SCSI_MAX_SG_SEGMENTS; |
| 275 | module_param(sg_tablesize, int, 0); |
| 276 | MODULE_PARM_DESC(sg_tablesize, |
| 277 | "Maximum number of entries in a scatter/gather table."); |
| 278 | |
| 279 | int num_requests = 256; |
| 280 | module_param(num_requests, int, 0); |
| 281 | MODULE_PARM_DESC(num_requests, |
| 282 | "Number of requests. Default 256."); |
| 283 | |
| 284 | int num_ae_requests = 4; |
| 285 | module_param(num_ae_requests, int, 0); |
| 286 | MODULE_PARM_DESC(num_ae_requests, |
| 287 | "Number of VDA asynchromous event requests. Default 4."); |
| 288 | |
| 289 | int cmd_per_lun = ESAS2R_DEFAULT_CMD_PER_LUN; |
| 290 | module_param(cmd_per_lun, int, 0); |
| 291 | MODULE_PARM_DESC(cmd_per_lun, |
| 292 | "Maximum number of commands per LUN. Default " |
| 293 | DEFINED_NUM_TO_STR(ESAS2R_DEFAULT_CMD_PER_LUN) "."); |
| 294 | |
| 295 | int can_queue = 128; |
| 296 | module_param(can_queue, int, 0); |
| 297 | MODULE_PARM_DESC(can_queue, |
| 298 | "Maximum number of commands per adapter. Default 128."); |
| 299 | |
| 300 | int esas2r_max_sectors = 0xFFFF; |
| 301 | module_param(esas2r_max_sectors, int, 0); |
| 302 | MODULE_PARM_DESC(esas2r_max_sectors, |
| 303 | "Maximum number of disk sectors in a single data transfer. " |
| 304 | "Default 65535 (largest possible setting)."); |
| 305 | |
| 306 | int interrupt_mode = 1; |
| 307 | module_param(interrupt_mode, int, 0); |
| 308 | MODULE_PARM_DESC(interrupt_mode, |
| 309 | "Defines the interrupt mode to use. 0 for legacy" |
| 310 | ", 1 for MSI. Default is MSI (1)."); |
| 311 | |
| 312 | static struct pci_device_id |
| 313 | esas2r_pci_table[] = { |
| 314 | { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x0049, |
| 315 | 0, |
| 316 | 0, 0 }, |
| 317 | { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004A, |
| 318 | 0, |
| 319 | 0, 0 }, |
| 320 | { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004B, |
| 321 | 0, |
| 322 | 0, 0 }, |
| 323 | { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004C, |
| 324 | 0, |
| 325 | 0, 0 }, |
| 326 | { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004D, |
| 327 | 0, |
| 328 | 0, 0 }, |
| 329 | { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004E, |
| 330 | 0, |
| 331 | 0, 0 }, |
| 332 | { 0, 0, 0, 0, |
| 333 | 0, |
| 334 | 0, 0 } |
| 335 | }; |
| 336 | |
| 337 | MODULE_DEVICE_TABLE(pci, esas2r_pci_table); |
| 338 | |
| 339 | static int |
| 340 | esas2r_probe(struct pci_dev *pcid, const struct pci_device_id *id); |
| 341 | |
| 342 | static void |
| 343 | esas2r_remove(struct pci_dev *pcid); |
| 344 | |
| 345 | static struct pci_driver |
| 346 | esas2r_pci_driver = { |
| 347 | .name = ESAS2R_DRVR_NAME, |
| 348 | .id_table = esas2r_pci_table, |
| 349 | .probe = esas2r_probe, |
| 350 | .remove = esas2r_remove, |
| 351 | .suspend = esas2r_suspend, |
| 352 | .resume = esas2r_resume, |
| 353 | }; |
| 354 | |
| 355 | static int esas2r_probe(struct pci_dev *pcid, |
| 356 | const struct pci_device_id *id) |
| 357 | { |
| 358 | struct Scsi_Host *host = NULL; |
| 359 | struct esas2r_adapter *a; |
| 360 | int err; |
| 361 | |
| 362 | size_t host_alloc_size = sizeof(struct esas2r_adapter) |
| 363 | + ((num_requests) + |
| 364 | 1) * sizeof(struct esas2r_request); |
| 365 | |
| 366 | esas2r_log_dev(ESAS2R_LOG_DEBG, &(pcid->dev), |
| 367 | "esas2r_probe() 0x%02x 0x%02x 0x%02x 0x%02x", |
| 368 | pcid->vendor, |
| 369 | pcid->device, |
| 370 | pcid->subsystem_vendor, |
| 371 | pcid->subsystem_device); |
| 372 | |
| 373 | esas2r_log_dev(ESAS2R_LOG_INFO, &(pcid->dev), |
| 374 | "before pci_enable_device() " |
| 375 | "enable_cnt: %d", |
| 376 | pcid->enable_cnt.counter); |
| 377 | |
| 378 | err = pci_enable_device(pcid); |
| 379 | if (err != 0) { |
| 380 | esas2r_log_dev(ESAS2R_LOG_CRIT, &(pcid->dev), |
| 381 | "pci_enable_device() FAIL (%d)", |
| 382 | err); |
| 383 | return -ENODEV; |
| 384 | } |
| 385 | |
| 386 | esas2r_log_dev(ESAS2R_LOG_INFO, &(pcid->dev), |
| 387 | "pci_enable_device() OK"); |
| 388 | esas2r_log_dev(ESAS2R_LOG_INFO, &(pcid->dev), |
Marek Vasut | 806188a | 2014-04-22 20:23:39 +0200 | [diff] [blame] | 389 | "after pci_enable_device() enable_cnt: %d", |
Bradley Grove | 26780d9 | 2013-08-23 10:35:45 -0400 | [diff] [blame] | 390 | pcid->enable_cnt.counter); |
| 391 | |
| 392 | host = scsi_host_alloc(&driver_template, host_alloc_size); |
| 393 | if (host == NULL) { |
| 394 | esas2r_log(ESAS2R_LOG_CRIT, "scsi_host_alloc() FAIL"); |
| 395 | return -ENODEV; |
| 396 | } |
| 397 | |
| 398 | memset(host->hostdata, 0, host_alloc_size); |
| 399 | |
| 400 | a = (struct esas2r_adapter *)host->hostdata; |
| 401 | |
| 402 | esas2r_log(ESAS2R_LOG_INFO, "scsi_host_alloc() OK host: %p", host); |
| 403 | |
| 404 | /* override max LUN and max target id */ |
| 405 | |
| 406 | host->max_id = ESAS2R_MAX_ID + 1; |
| 407 | host->max_lun = 255; |
| 408 | |
| 409 | /* we can handle 16-byte CDbs */ |
| 410 | |
| 411 | host->max_cmd_len = 16; |
| 412 | |
| 413 | host->can_queue = can_queue; |
| 414 | host->cmd_per_lun = cmd_per_lun; |
| 415 | host->this_id = host->max_id + 1; |
| 416 | host->max_channel = 0; |
| 417 | host->unique_id = found_adapters; |
| 418 | host->sg_tablesize = sg_tablesize; |
| 419 | host->max_sectors = esas2r_max_sectors; |
| 420 | |
| 421 | /* set to bus master for BIOses that don't do it for us */ |
| 422 | |
| 423 | esas2r_log(ESAS2R_LOG_INFO, "pci_set_master() called"); |
| 424 | |
| 425 | pci_set_master(pcid); |
| 426 | |
| 427 | if (!esas2r_init_adapter(host, pcid, found_adapters)) { |
| 428 | esas2r_log(ESAS2R_LOG_CRIT, |
| 429 | "unable to initialize device at PCI bus %x:%x", |
| 430 | pcid->bus->number, |
| 431 | pcid->devfn); |
| 432 | |
| 433 | esas2r_log_dev(ESAS2R_LOG_INFO, &(host->shost_gendev), |
| 434 | "scsi_host_put() called"); |
| 435 | |
| 436 | scsi_host_put(host); |
| 437 | |
| 438 | return 0; |
| 439 | |
| 440 | } |
| 441 | |
| 442 | esas2r_log(ESAS2R_LOG_INFO, "pci_set_drvdata(%p, %p) called", pcid, |
| 443 | host->hostdata); |
| 444 | |
| 445 | pci_set_drvdata(pcid, host); |
| 446 | |
| 447 | esas2r_log(ESAS2R_LOG_INFO, "scsi_add_host() called"); |
| 448 | |
| 449 | err = scsi_add_host(host, &pcid->dev); |
| 450 | |
| 451 | if (err) { |
| 452 | esas2r_log(ESAS2R_LOG_CRIT, "scsi_add_host returned %d", err); |
| 453 | esas2r_log_dev(ESAS2R_LOG_CRIT, &(host->shost_gendev), |
| 454 | "scsi_add_host() FAIL"); |
| 455 | |
| 456 | esas2r_log_dev(ESAS2R_LOG_INFO, &(host->shost_gendev), |
| 457 | "scsi_host_put() called"); |
| 458 | |
| 459 | scsi_host_put(host); |
| 460 | |
| 461 | esas2r_log_dev(ESAS2R_LOG_INFO, &(host->shost_gendev), |
| 462 | "pci_set_drvdata(%p, NULL) called", |
| 463 | pcid); |
| 464 | |
| 465 | pci_set_drvdata(pcid, NULL); |
| 466 | |
| 467 | return -ENODEV; |
| 468 | } |
| 469 | |
| 470 | |
| 471 | esas2r_fw_event_on(a); |
| 472 | |
| 473 | esas2r_log_dev(ESAS2R_LOG_INFO, &(host->shost_gendev), |
| 474 | "scsi_scan_host() called"); |
| 475 | |
| 476 | scsi_scan_host(host); |
| 477 | |
| 478 | /* Add sysfs binary files */ |
| 479 | if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_fw)) |
| 480 | esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev), |
| 481 | "Failed to create sysfs binary file: fw"); |
| 482 | else |
| 483 | a->sysfs_fw_created = 1; |
| 484 | |
| 485 | if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_fs)) |
| 486 | esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev), |
| 487 | "Failed to create sysfs binary file: fs"); |
| 488 | else |
| 489 | a->sysfs_fs_created = 1; |
| 490 | |
| 491 | if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_vda)) |
| 492 | esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev), |
| 493 | "Failed to create sysfs binary file: vda"); |
| 494 | else |
| 495 | a->sysfs_vda_created = 1; |
| 496 | |
| 497 | if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_hw)) |
| 498 | esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev), |
| 499 | "Failed to create sysfs binary file: hw"); |
| 500 | else |
| 501 | a->sysfs_hw_created = 1; |
| 502 | |
| 503 | if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_live_nvram)) |
| 504 | esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev), |
| 505 | "Failed to create sysfs binary file: live_nvram"); |
| 506 | else |
| 507 | a->sysfs_live_nvram_created = 1; |
| 508 | |
| 509 | if (sysfs_create_bin_file(&host->shost_dev.kobj, |
| 510 | &bin_attr_default_nvram)) |
| 511 | esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev), |
| 512 | "Failed to create sysfs binary file: default_nvram"); |
| 513 | else |
| 514 | a->sysfs_default_nvram_created = 1; |
| 515 | |
| 516 | found_adapters++; |
| 517 | |
| 518 | return 0; |
| 519 | } |
| 520 | |
| 521 | static void esas2r_remove(struct pci_dev *pdev) |
| 522 | { |
| 523 | struct Scsi_Host *host; |
| 524 | int index; |
| 525 | |
| 526 | if (pdev == NULL) { |
| 527 | esas2r_log(ESAS2R_LOG_WARN, "esas2r_remove pdev==NULL"); |
| 528 | return; |
| 529 | } |
| 530 | |
| 531 | host = pci_get_drvdata(pdev); |
| 532 | |
| 533 | if (host == NULL) { |
| 534 | /* |
| 535 | * this can happen if pci_set_drvdata was already called |
| 536 | * to clear the host pointer. if this is the case, we |
| 537 | * are okay; this channel has already been cleaned up. |
| 538 | */ |
| 539 | |
| 540 | return; |
| 541 | } |
| 542 | |
| 543 | esas2r_log_dev(ESAS2R_LOG_INFO, &(pdev->dev), |
| 544 | "esas2r_remove(%p) called; " |
| 545 | "host:%p", pdev, |
| 546 | host); |
| 547 | |
| 548 | index = esas2r_cleanup(host); |
| 549 | |
| 550 | if (index < 0) |
| 551 | esas2r_log_dev(ESAS2R_LOG_WARN, &(pdev->dev), |
| 552 | "unknown host in %s", |
| 553 | __func__); |
| 554 | |
| 555 | found_adapters--; |
| 556 | |
| 557 | /* if this was the last adapter, clean up the rest of the driver */ |
| 558 | |
| 559 | if (found_adapters == 0) |
| 560 | esas2r_cleanup(NULL); |
| 561 | } |
| 562 | |
| 563 | static int __init esas2r_init(void) |
| 564 | { |
| 565 | int i; |
| 566 | |
| 567 | esas2r_log(ESAS2R_LOG_INFO, "%s called", __func__); |
| 568 | |
| 569 | /* verify valid parameters */ |
| 570 | |
| 571 | if (can_queue < 1) { |
| 572 | esas2r_log(ESAS2R_LOG_WARN, |
| 573 | "warning: can_queue must be at least 1, value " |
| 574 | "forced."); |
| 575 | can_queue = 1; |
| 576 | } else if (can_queue > 2048) { |
| 577 | esas2r_log(ESAS2R_LOG_WARN, |
| 578 | "warning: can_queue must be no larger than 2048, " |
| 579 | "value forced."); |
| 580 | can_queue = 2048; |
| 581 | } |
| 582 | |
| 583 | if (cmd_per_lun < 1) { |
| 584 | esas2r_log(ESAS2R_LOG_WARN, |
| 585 | "warning: cmd_per_lun must be at least 1, value " |
| 586 | "forced."); |
| 587 | cmd_per_lun = 1; |
| 588 | } else if (cmd_per_lun > 2048) { |
| 589 | esas2r_log(ESAS2R_LOG_WARN, |
| 590 | "warning: cmd_per_lun must be no larger than " |
| 591 | "2048, value forced."); |
| 592 | cmd_per_lun = 2048; |
| 593 | } |
| 594 | |
| 595 | if (sg_tablesize < 32) { |
| 596 | esas2r_log(ESAS2R_LOG_WARN, |
| 597 | "warning: sg_tablesize must be at least 32, " |
| 598 | "value forced."); |
| 599 | sg_tablesize = 32; |
| 600 | } |
| 601 | |
| 602 | if (esas2r_max_sectors < 1) { |
| 603 | esas2r_log(ESAS2R_LOG_WARN, |
| 604 | "warning: esas2r_max_sectors must be at least " |
| 605 | "1, value forced."); |
| 606 | esas2r_max_sectors = 1; |
| 607 | } else if (esas2r_max_sectors > 0xffff) { |
| 608 | esas2r_log(ESAS2R_LOG_WARN, |
| 609 | "warning: esas2r_max_sectors must be no larger " |
| 610 | "than 0xffff, value forced."); |
| 611 | esas2r_max_sectors = 0xffff; |
| 612 | } |
| 613 | |
| 614 | sgl_page_size &= ~(ESAS2R_SGL_ALIGN - 1); |
| 615 | |
| 616 | if (sgl_page_size < SGL_PG_SZ_MIN) |
| 617 | sgl_page_size = SGL_PG_SZ_MIN; |
| 618 | else if (sgl_page_size > SGL_PG_SZ_MAX) |
| 619 | sgl_page_size = SGL_PG_SZ_MAX; |
| 620 | |
| 621 | if (num_sg_lists < NUM_SGL_MIN) |
| 622 | num_sg_lists = NUM_SGL_MIN; |
| 623 | else if (num_sg_lists > NUM_SGL_MAX) |
| 624 | num_sg_lists = NUM_SGL_MAX; |
| 625 | |
| 626 | if (num_requests < NUM_REQ_MIN) |
| 627 | num_requests = NUM_REQ_MIN; |
| 628 | else if (num_requests > NUM_REQ_MAX) |
| 629 | num_requests = NUM_REQ_MAX; |
| 630 | |
| 631 | if (num_ae_requests < NUM_AE_MIN) |
| 632 | num_ae_requests = NUM_AE_MIN; |
| 633 | else if (num_ae_requests > NUM_AE_MAX) |
| 634 | num_ae_requests = NUM_AE_MAX; |
| 635 | |
| 636 | /* set up other globals */ |
| 637 | |
| 638 | for (i = 0; i < MAX_ADAPTERS; i++) |
| 639 | esas2r_adapters[i] = NULL; |
| 640 | |
| 641 | /* initialize */ |
| 642 | |
| 643 | driver_template.module = THIS_MODULE; |
| 644 | |
| 645 | if (pci_register_driver(&esas2r_pci_driver) != 0) |
| 646 | esas2r_log(ESAS2R_LOG_CRIT, "pci_register_driver FAILED"); |
| 647 | else |
| 648 | esas2r_log(ESAS2R_LOG_INFO, "pci_register_driver() OK"); |
| 649 | |
| 650 | if (!found_adapters) { |
| 651 | pci_unregister_driver(&esas2r_pci_driver); |
| 652 | esas2r_cleanup(NULL); |
| 653 | |
| 654 | esas2r_log(ESAS2R_LOG_CRIT, |
| 655 | "driver will not be loaded because no ATTO " |
| 656 | "%s devices were found", |
| 657 | ESAS2R_DRVR_NAME); |
| 658 | return -1; |
| 659 | } else { |
| 660 | esas2r_log(ESAS2R_LOG_INFO, "found %d adapters", |
| 661 | found_adapters); |
| 662 | } |
| 663 | |
| 664 | return 0; |
| 665 | } |
| 666 | |
| 667 | /* Handle ioctl calls to "/proc/scsi/esas2r/ATTOnode" */ |
| 668 | static const struct file_operations esas2r_proc_fops = { |
| 669 | .compat_ioctl = esas2r_proc_ioctl, |
| 670 | .unlocked_ioctl = esas2r_proc_ioctl, |
| 671 | }; |
| 672 | |
| 673 | static struct Scsi_Host *esas2r_proc_host; |
| 674 | static int esas2r_proc_major; |
| 675 | |
| 676 | long esas2r_proc_ioctl(struct file *fp, unsigned int cmd, unsigned long arg) |
| 677 | { |
| 678 | return esas2r_ioctl_handler(esas2r_proc_host->hostdata, |
| 679 | (int)cmd, (void __user *)arg); |
| 680 | } |
| 681 | |
| 682 | static void __exit esas2r_exit(void) |
| 683 | { |
| 684 | esas2r_log(ESAS2R_LOG_INFO, "%s called", __func__); |
| 685 | |
| 686 | if (esas2r_proc_major > 0) { |
| 687 | esas2r_log(ESAS2R_LOG_INFO, "unregister proc"); |
| 688 | |
| 689 | remove_proc_entry(ATTONODE_NAME, |
| 690 | esas2r_proc_host->hostt->proc_dir); |
| 691 | unregister_chrdev(esas2r_proc_major, ESAS2R_DRVR_NAME); |
| 692 | |
| 693 | esas2r_proc_major = 0; |
| 694 | } |
| 695 | |
| 696 | esas2r_log(ESAS2R_LOG_INFO, "pci_unregister_driver() called"); |
| 697 | |
| 698 | pci_unregister_driver(&esas2r_pci_driver); |
| 699 | } |
| 700 | |
| 701 | int esas2r_show_info(struct seq_file *m, struct Scsi_Host *sh) |
| 702 | { |
| 703 | struct esas2r_adapter *a = (struct esas2r_adapter *)sh->hostdata; |
| 704 | |
| 705 | struct esas2r_target *t; |
| 706 | int dev_count = 0; |
| 707 | |
| 708 | esas2r_log(ESAS2R_LOG_DEBG, "esas2r_show_info (%p,%d)", m, sh->host_no); |
| 709 | |
| 710 | seq_printf(m, ESAS2R_LONGNAME "\n" |
| 711 | "Driver version: "ESAS2R_VERSION_STR "\n" |
| 712 | "Flash version: %s\n" |
| 713 | "Firmware version: %s\n" |
| 714 | "Copyright "ESAS2R_COPYRIGHT_YEARS "\n" |
| 715 | "http://www.attotech.com\n" |
| 716 | "\n", |
| 717 | a->flash_rev, |
| 718 | a->fw_rev[0] ? a->fw_rev : "(none)"); |
| 719 | |
| 720 | |
| 721 | seq_printf(m, "Adapter information:\n" |
| 722 | "--------------------\n" |
| 723 | "Model: %s\n" |
| 724 | "SAS address: %02X%02X%02X%02X:%02X%02X%02X%02X\n", |
| 725 | esas2r_get_model_name(a), |
| 726 | a->nvram->sas_addr[0], |
| 727 | a->nvram->sas_addr[1], |
| 728 | a->nvram->sas_addr[2], |
| 729 | a->nvram->sas_addr[3], |
| 730 | a->nvram->sas_addr[4], |
| 731 | a->nvram->sas_addr[5], |
| 732 | a->nvram->sas_addr[6], |
| 733 | a->nvram->sas_addr[7]); |
| 734 | |
| 735 | seq_puts(m, "\n" |
| 736 | "Discovered devices:\n" |
| 737 | "\n" |
| 738 | " # Target ID\n" |
| 739 | "---------------\n"); |
| 740 | |
| 741 | for (t = a->targetdb; t < a->targetdb_end; t++) |
| 742 | if (t->buffered_target_state == TS_PRESENT) { |
| 743 | seq_printf(m, " %3d %3d\n", |
| 744 | ++dev_count, |
| 745 | (u16)(uintptr_t)(t - a->targetdb)); |
| 746 | } |
| 747 | |
| 748 | if (dev_count == 0) |
| 749 | seq_puts(m, "none\n"); |
| 750 | |
Rasmus Villemoes | f50332f | 2014-12-03 00:10:54 +0100 | [diff] [blame] | 751 | seq_putc(m, '\n'); |
Bradley Grove | 26780d9 | 2013-08-23 10:35:45 -0400 | [diff] [blame] | 752 | return 0; |
| 753 | |
| 754 | } |
| 755 | |
| 756 | int esas2r_release(struct Scsi_Host *sh) |
| 757 | { |
| 758 | esas2r_log_dev(ESAS2R_LOG_INFO, &(sh->shost_gendev), |
| 759 | "esas2r_release() called"); |
| 760 | |
| 761 | esas2r_cleanup(sh); |
| 762 | if (sh->irq) |
| 763 | free_irq(sh->irq, NULL); |
| 764 | scsi_unregister(sh); |
| 765 | return 0; |
| 766 | } |
| 767 | |
| 768 | const char *esas2r_info(struct Scsi_Host *sh) |
| 769 | { |
| 770 | struct esas2r_adapter *a = (struct esas2r_adapter *)sh->hostdata; |
| 771 | static char esas2r_info_str[512]; |
| 772 | |
| 773 | esas2r_log_dev(ESAS2R_LOG_INFO, &(sh->shost_gendev), |
| 774 | "esas2r_info() called"); |
| 775 | |
| 776 | /* |
| 777 | * if we haven't done so already, register as a char driver |
| 778 | * and stick a node under "/proc/scsi/esas2r/ATTOnode" |
| 779 | */ |
| 780 | |
| 781 | if (esas2r_proc_major <= 0) { |
| 782 | esas2r_proc_host = sh; |
| 783 | |
| 784 | esas2r_proc_major = register_chrdev(0, ESAS2R_DRVR_NAME, |
| 785 | &esas2r_proc_fops); |
| 786 | |
| 787 | esas2r_log_dev(ESAS2R_LOG_DEBG, &(sh->shost_gendev), |
| 788 | "register_chrdev (major %d)", |
| 789 | esas2r_proc_major); |
| 790 | |
| 791 | if (esas2r_proc_major > 0) { |
| 792 | struct proc_dir_entry *pde; |
| 793 | |
| 794 | pde = proc_create(ATTONODE_NAME, 0, |
| 795 | sh->hostt->proc_dir, |
| 796 | &esas2r_proc_fops); |
| 797 | |
| 798 | if (!pde) { |
| 799 | esas2r_log_dev(ESAS2R_LOG_WARN, |
| 800 | &(sh->shost_gendev), |
| 801 | "failed to create_proc_entry"); |
| 802 | esas2r_proc_major = -1; |
| 803 | } |
| 804 | } |
| 805 | } |
| 806 | |
| 807 | sprintf(esas2r_info_str, |
| 808 | ESAS2R_LONGNAME " (bus 0x%02X, device 0x%02X, IRQ 0x%02X)" |
| 809 | " driver version: "ESAS2R_VERSION_STR " firmware version: " |
| 810 | "%s\n", |
| 811 | a->pcid->bus->number, a->pcid->devfn, a->pcid->irq, |
| 812 | a->fw_rev[0] ? a->fw_rev : "(none)"); |
| 813 | |
| 814 | return esas2r_info_str; |
| 815 | } |
| 816 | |
| 817 | /* Callback for building a request scatter/gather list */ |
| 818 | static u32 get_physaddr_from_sgc(struct esas2r_sg_context *sgc, u64 *addr) |
| 819 | { |
| 820 | u32 len; |
| 821 | |
| 822 | if (likely(sgc->cur_offset == sgc->exp_offset)) { |
| 823 | /* |
| 824 | * the normal case: caller used all bytes from previous call, so |
| 825 | * expected offset is the same as the current offset. |
| 826 | */ |
| 827 | |
| 828 | if (sgc->sgel_count < sgc->num_sgel) { |
| 829 | /* retrieve next segment, except for first time */ |
| 830 | if (sgc->exp_offset > (u8 *)0) { |
| 831 | /* advance current segment */ |
| 832 | sgc->cur_sgel = sg_next(sgc->cur_sgel); |
| 833 | ++(sgc->sgel_count); |
| 834 | } |
| 835 | |
| 836 | |
| 837 | len = sg_dma_len(sgc->cur_sgel); |
| 838 | (*addr) = sg_dma_address(sgc->cur_sgel); |
| 839 | |
| 840 | /* save the total # bytes returned to caller so far */ |
| 841 | sgc->exp_offset += len; |
| 842 | |
| 843 | } else { |
| 844 | len = 0; |
| 845 | } |
| 846 | } else if (sgc->cur_offset < sgc->exp_offset) { |
| 847 | /* |
| 848 | * caller did not use all bytes from previous call. need to |
| 849 | * compute the address based on current segment. |
| 850 | */ |
| 851 | |
| 852 | len = sg_dma_len(sgc->cur_sgel); |
| 853 | (*addr) = sg_dma_address(sgc->cur_sgel); |
| 854 | |
| 855 | sgc->exp_offset -= len; |
| 856 | |
| 857 | /* calculate PA based on prev segment address and offsets */ |
| 858 | *addr = *addr + |
| 859 | (sgc->cur_offset - sgc->exp_offset); |
| 860 | |
| 861 | sgc->exp_offset += len; |
| 862 | |
| 863 | /* re-calculate length based on offset */ |
| 864 | len = lower_32_bits( |
| 865 | sgc->exp_offset - sgc->cur_offset); |
| 866 | } else { /* if ( sgc->cur_offset > sgc->exp_offset ) */ |
| 867 | /* |
| 868 | * we don't expect the caller to skip ahead. |
| 869 | * cur_offset will never exceed the len we return |
| 870 | */ |
| 871 | len = 0; |
| 872 | } |
| 873 | |
| 874 | return len; |
| 875 | } |
| 876 | |
| 877 | int esas2r_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd) |
| 878 | { |
| 879 | struct esas2r_adapter *a = |
| 880 | (struct esas2r_adapter *)cmd->device->host->hostdata; |
| 881 | struct esas2r_request *rq; |
| 882 | struct esas2r_sg_context sgc; |
| 883 | unsigned bufflen; |
| 884 | |
| 885 | /* Assume success, if it fails we will fix the result later. */ |
| 886 | cmd->result = DID_OK << 16; |
| 887 | |
Bradley Grove | 9588d24 | 2013-10-01 14:26:01 -0400 | [diff] [blame] | 888 | if (unlikely(test_bit(AF_DEGRADED_MODE, &a->flags))) { |
Bradley Grove | 26780d9 | 2013-08-23 10:35:45 -0400 | [diff] [blame] | 889 | cmd->result = DID_NO_CONNECT << 16; |
| 890 | cmd->scsi_done(cmd); |
| 891 | return 0; |
| 892 | } |
| 893 | |
| 894 | rq = esas2r_alloc_request(a); |
| 895 | if (unlikely(rq == NULL)) { |
| 896 | esas2r_debug("esas2r_alloc_request failed"); |
| 897 | return SCSI_MLQUEUE_HOST_BUSY; |
| 898 | } |
| 899 | |
| 900 | rq->cmd = cmd; |
| 901 | bufflen = scsi_bufflen(cmd); |
| 902 | |
| 903 | if (likely(bufflen != 0)) { |
| 904 | if (cmd->sc_data_direction == DMA_TO_DEVICE) |
| 905 | rq->vrq->scsi.flags |= cpu_to_le32(FCP_CMND_WRD); |
| 906 | else if (cmd->sc_data_direction == DMA_FROM_DEVICE) |
| 907 | rq->vrq->scsi.flags |= cpu_to_le32(FCP_CMND_RDD); |
| 908 | } |
| 909 | |
| 910 | memcpy(rq->vrq->scsi.cdb, cmd->cmnd, cmd->cmd_len); |
| 911 | rq->vrq->scsi.length = cpu_to_le32(bufflen); |
| 912 | rq->target_id = cmd->device->id; |
| 913 | rq->vrq->scsi.flags |= cpu_to_le32(cmd->device->lun); |
| 914 | rq->sense_buf = cmd->sense_buffer; |
| 915 | rq->sense_len = SCSI_SENSE_BUFFERSIZE; |
| 916 | |
| 917 | esas2r_sgc_init(&sgc, a, rq, NULL); |
| 918 | |
| 919 | sgc.length = bufflen; |
| 920 | sgc.cur_offset = NULL; |
| 921 | |
| 922 | sgc.cur_sgel = scsi_sglist(cmd); |
| 923 | sgc.exp_offset = NULL; |
| 924 | sgc.num_sgel = scsi_dma_map(cmd); |
| 925 | sgc.sgel_count = 0; |
| 926 | |
| 927 | if (unlikely(sgc.num_sgel < 0)) { |
| 928 | esas2r_free_request(a, rq); |
| 929 | return SCSI_MLQUEUE_HOST_BUSY; |
| 930 | } |
| 931 | |
| 932 | sgc.get_phys_addr = (PGETPHYSADDR)get_physaddr_from_sgc; |
| 933 | |
| 934 | if (unlikely(!esas2r_build_sg_list(a, rq, &sgc))) { |
| 935 | scsi_dma_unmap(cmd); |
| 936 | esas2r_free_request(a, rq); |
| 937 | return SCSI_MLQUEUE_HOST_BUSY; |
| 938 | } |
| 939 | |
| 940 | esas2r_debug("start request %p to %d:%d\n", rq, (int)cmd->device->id, |
| 941 | (int)cmd->device->lun); |
| 942 | |
| 943 | esas2r_start_request(a, rq); |
| 944 | |
| 945 | return 0; |
| 946 | } |
| 947 | |
| 948 | static void complete_task_management_request(struct esas2r_adapter *a, |
| 949 | struct esas2r_request *rq) |
| 950 | { |
| 951 | (*rq->task_management_status_ptr) = rq->req_stat; |
| 952 | esas2r_free_request(a, rq); |
| 953 | } |
| 954 | |
| 955 | /** |
| 956 | * Searches the specified queue for the specified queue for the command |
| 957 | * to abort. |
| 958 | * |
| 959 | * @param [in] a |
| 960 | * @param [in] abort_request |
| 961 | * @param [in] cmd |
| 962 | * t |
| 963 | * @return 0 on failure, 1 if command was not found, 2 if command was found |
| 964 | */ |
| 965 | static int esas2r_check_active_queue(struct esas2r_adapter *a, |
| 966 | struct esas2r_request **abort_request, |
| 967 | struct scsi_cmnd *cmd, |
| 968 | struct list_head *queue) |
| 969 | { |
| 970 | bool found = false; |
| 971 | struct esas2r_request *ar = *abort_request; |
| 972 | struct esas2r_request *rq; |
| 973 | struct list_head *element, *next; |
| 974 | |
| 975 | list_for_each_safe(element, next, queue) { |
| 976 | |
| 977 | rq = list_entry(element, struct esas2r_request, req_list); |
| 978 | |
| 979 | if (rq->cmd == cmd) { |
| 980 | |
| 981 | /* Found the request. See what to do with it. */ |
| 982 | if (queue == &a->active_list) { |
| 983 | /* |
| 984 | * We are searching the active queue, which |
| 985 | * means that we need to send an abort request |
| 986 | * to the firmware. |
| 987 | */ |
| 988 | ar = esas2r_alloc_request(a); |
| 989 | if (ar == NULL) { |
| 990 | esas2r_log_dev(ESAS2R_LOG_WARN, |
| 991 | &(a->host->shost_gendev), |
| 992 | "unable to allocate an abort request for cmd %p", |
| 993 | cmd); |
| 994 | return 0; /* Failure */ |
| 995 | } |
| 996 | |
| 997 | /* |
| 998 | * Task management request must be formatted |
| 999 | * with a lock held. |
| 1000 | */ |
| 1001 | ar->sense_len = 0; |
| 1002 | ar->vrq->scsi.length = 0; |
| 1003 | ar->target_id = rq->target_id; |
| 1004 | ar->vrq->scsi.flags |= cpu_to_le32( |
| 1005 | (u8)le32_to_cpu(rq->vrq->scsi.flags)); |
| 1006 | |
| 1007 | memset(ar->vrq->scsi.cdb, 0, |
| 1008 | sizeof(ar->vrq->scsi.cdb)); |
| 1009 | |
| 1010 | ar->vrq->scsi.flags |= cpu_to_le32( |
| 1011 | FCP_CMND_TRM); |
| 1012 | ar->vrq->scsi.u.abort_handle = |
| 1013 | rq->vrq->scsi.handle; |
| 1014 | } else { |
| 1015 | /* |
| 1016 | * The request is pending but not active on |
| 1017 | * the firmware. Just free it now and we'll |
| 1018 | * report the successful abort below. |
| 1019 | */ |
| 1020 | list_del_init(&rq->req_list); |
| 1021 | esas2r_free_request(a, rq); |
| 1022 | } |
| 1023 | |
| 1024 | found = true; |
| 1025 | break; |
| 1026 | } |
| 1027 | |
| 1028 | } |
| 1029 | |
| 1030 | if (!found) |
| 1031 | return 1; /* Not found */ |
| 1032 | |
| 1033 | return 2; /* found */ |
| 1034 | |
| 1035 | |
| 1036 | } |
| 1037 | |
| 1038 | int esas2r_eh_abort(struct scsi_cmnd *cmd) |
| 1039 | { |
| 1040 | struct esas2r_adapter *a = |
| 1041 | (struct esas2r_adapter *)cmd->device->host->hostdata; |
| 1042 | struct esas2r_request *abort_request = NULL; |
| 1043 | unsigned long flags; |
| 1044 | struct list_head *queue; |
| 1045 | int result; |
| 1046 | |
| 1047 | esas2r_log(ESAS2R_LOG_INFO, "eh_abort (%p)", cmd); |
| 1048 | |
Bradley Grove | 9588d24 | 2013-10-01 14:26:01 -0400 | [diff] [blame] | 1049 | if (test_bit(AF_DEGRADED_MODE, &a->flags)) { |
Bradley Grove | 26780d9 | 2013-08-23 10:35:45 -0400 | [diff] [blame] | 1050 | cmd->result = DID_ABORT << 16; |
| 1051 | |
| 1052 | scsi_set_resid(cmd, 0); |
| 1053 | |
| 1054 | cmd->scsi_done(cmd); |
| 1055 | |
Hannes Reinecke | b6c92b7 | 2014-10-30 09:44:36 +0100 | [diff] [blame] | 1056 | return SUCCESS; |
Bradley Grove | 26780d9 | 2013-08-23 10:35:45 -0400 | [diff] [blame] | 1057 | } |
| 1058 | |
| 1059 | spin_lock_irqsave(&a->queue_lock, flags); |
| 1060 | |
| 1061 | /* |
| 1062 | * Run through the defer and active queues looking for the request |
| 1063 | * to abort. |
| 1064 | */ |
| 1065 | |
| 1066 | queue = &a->defer_list; |
| 1067 | |
| 1068 | check_active_queue: |
| 1069 | |
| 1070 | result = esas2r_check_active_queue(a, &abort_request, cmd, queue); |
| 1071 | |
| 1072 | if (!result) { |
| 1073 | spin_unlock_irqrestore(&a->queue_lock, flags); |
| 1074 | return FAILED; |
| 1075 | } else if (result == 2 && (queue == &a->defer_list)) { |
| 1076 | queue = &a->active_list; |
| 1077 | goto check_active_queue; |
| 1078 | } |
| 1079 | |
| 1080 | spin_unlock_irqrestore(&a->queue_lock, flags); |
| 1081 | |
| 1082 | if (abort_request) { |
| 1083 | u8 task_management_status = RS_PENDING; |
| 1084 | |
| 1085 | /* |
| 1086 | * the request is already active, so we need to tell |
| 1087 | * the firmware to abort it and wait for the response. |
| 1088 | */ |
| 1089 | |
| 1090 | abort_request->comp_cb = complete_task_management_request; |
| 1091 | abort_request->task_management_status_ptr = |
| 1092 | &task_management_status; |
| 1093 | |
| 1094 | esas2r_start_request(a, abort_request); |
| 1095 | |
| 1096 | if (atomic_read(&a->disable_cnt) == 0) |
| 1097 | esas2r_do_deferred_processes(a); |
| 1098 | |
| 1099 | while (task_management_status == RS_PENDING) |
| 1100 | msleep(10); |
| 1101 | |
| 1102 | /* |
| 1103 | * Once we get here, the original request will have been |
| 1104 | * completed by the firmware and the abort request will have |
| 1105 | * been cleaned up. we're done! |
| 1106 | */ |
| 1107 | |
| 1108 | return SUCCESS; |
| 1109 | } |
| 1110 | |
| 1111 | /* |
| 1112 | * If we get here, either we found the inactive request and |
| 1113 | * freed it, or we didn't find it at all. Either way, success! |
| 1114 | */ |
| 1115 | |
| 1116 | cmd->result = DID_ABORT << 16; |
| 1117 | |
| 1118 | scsi_set_resid(cmd, 0); |
| 1119 | |
| 1120 | cmd->scsi_done(cmd); |
| 1121 | |
| 1122 | return SUCCESS; |
| 1123 | } |
| 1124 | |
| 1125 | static int esas2r_host_bus_reset(struct scsi_cmnd *cmd, bool host_reset) |
| 1126 | { |
| 1127 | struct esas2r_adapter *a = |
| 1128 | (struct esas2r_adapter *)cmd->device->host->hostdata; |
| 1129 | |
Bradley Grove | 9588d24 | 2013-10-01 14:26:01 -0400 | [diff] [blame] | 1130 | if (test_bit(AF_DEGRADED_MODE, &a->flags)) |
Bradley Grove | 26780d9 | 2013-08-23 10:35:45 -0400 | [diff] [blame] | 1131 | return FAILED; |
| 1132 | |
| 1133 | if (host_reset) |
| 1134 | esas2r_reset_adapter(a); |
| 1135 | else |
| 1136 | esas2r_reset_bus(a); |
| 1137 | |
| 1138 | /* above call sets the AF_OS_RESET flag. wait for it to clear. */ |
| 1139 | |
Bradley Grove | 9588d24 | 2013-10-01 14:26:01 -0400 | [diff] [blame] | 1140 | while (test_bit(AF_OS_RESET, &a->flags)) { |
Bradley Grove | 26780d9 | 2013-08-23 10:35:45 -0400 | [diff] [blame] | 1141 | msleep(10); |
| 1142 | |
Bradley Grove | 9588d24 | 2013-10-01 14:26:01 -0400 | [diff] [blame] | 1143 | if (test_bit(AF_DEGRADED_MODE, &a->flags)) |
Bradley Grove | 26780d9 | 2013-08-23 10:35:45 -0400 | [diff] [blame] | 1144 | return FAILED; |
| 1145 | } |
| 1146 | |
Bradley Grove | 9588d24 | 2013-10-01 14:26:01 -0400 | [diff] [blame] | 1147 | if (test_bit(AF_DEGRADED_MODE, &a->flags)) |
Bradley Grove | 26780d9 | 2013-08-23 10:35:45 -0400 | [diff] [blame] | 1148 | return FAILED; |
| 1149 | |
| 1150 | return SUCCESS; |
| 1151 | } |
| 1152 | |
| 1153 | int esas2r_host_reset(struct scsi_cmnd *cmd) |
| 1154 | { |
| 1155 | esas2r_log(ESAS2R_LOG_INFO, "host_reset (%p)", cmd); |
| 1156 | |
| 1157 | return esas2r_host_bus_reset(cmd, true); |
| 1158 | } |
| 1159 | |
| 1160 | int esas2r_bus_reset(struct scsi_cmnd *cmd) |
| 1161 | { |
| 1162 | esas2r_log(ESAS2R_LOG_INFO, "bus_reset (%p)", cmd); |
| 1163 | |
| 1164 | return esas2r_host_bus_reset(cmd, false); |
| 1165 | } |
| 1166 | |
| 1167 | static int esas2r_dev_targ_reset(struct scsi_cmnd *cmd, bool target_reset) |
| 1168 | { |
| 1169 | struct esas2r_adapter *a = |
| 1170 | (struct esas2r_adapter *)cmd->device->host->hostdata; |
| 1171 | struct esas2r_request *rq; |
| 1172 | u8 task_management_status = RS_PENDING; |
| 1173 | bool completed; |
| 1174 | |
Bradley Grove | 9588d24 | 2013-10-01 14:26:01 -0400 | [diff] [blame] | 1175 | if (test_bit(AF_DEGRADED_MODE, &a->flags)) |
Bradley Grove | 26780d9 | 2013-08-23 10:35:45 -0400 | [diff] [blame] | 1176 | return FAILED; |
| 1177 | |
| 1178 | retry: |
| 1179 | rq = esas2r_alloc_request(a); |
| 1180 | if (rq == NULL) { |
| 1181 | if (target_reset) { |
| 1182 | esas2r_log(ESAS2R_LOG_CRIT, |
| 1183 | "unable to allocate a request for a " |
| 1184 | "target reset (%d)!", |
| 1185 | cmd->device->id); |
| 1186 | } else { |
| 1187 | esas2r_log(ESAS2R_LOG_CRIT, |
| 1188 | "unable to allocate a request for a " |
| 1189 | "device reset (%d:%d)!", |
| 1190 | cmd->device->id, |
| 1191 | cmd->device->lun); |
| 1192 | } |
| 1193 | |
| 1194 | |
| 1195 | return FAILED; |
| 1196 | } |
| 1197 | |
| 1198 | rq->target_id = cmd->device->id; |
| 1199 | rq->vrq->scsi.flags |= cpu_to_le32(cmd->device->lun); |
| 1200 | rq->req_stat = RS_PENDING; |
| 1201 | |
| 1202 | rq->comp_cb = complete_task_management_request; |
| 1203 | rq->task_management_status_ptr = &task_management_status; |
| 1204 | |
| 1205 | if (target_reset) { |
| 1206 | esas2r_debug("issuing target reset (%p) to id %d", rq, |
| 1207 | cmd->device->id); |
| 1208 | completed = esas2r_send_task_mgmt(a, rq, 0x20); |
| 1209 | } else { |
| 1210 | esas2r_debug("issuing device reset (%p) to id %d lun %d", rq, |
| 1211 | cmd->device->id, cmd->device->lun); |
| 1212 | completed = esas2r_send_task_mgmt(a, rq, 0x10); |
| 1213 | } |
| 1214 | |
| 1215 | if (completed) { |
| 1216 | /* Task management cmd completed right away, need to free it. */ |
| 1217 | |
| 1218 | esas2r_free_request(a, rq); |
| 1219 | } else { |
| 1220 | /* |
| 1221 | * Wait for firmware to complete the request. Completion |
| 1222 | * callback will free it. |
| 1223 | */ |
| 1224 | while (task_management_status == RS_PENDING) |
| 1225 | msleep(10); |
| 1226 | } |
| 1227 | |
Bradley Grove | 9588d24 | 2013-10-01 14:26:01 -0400 | [diff] [blame] | 1228 | if (test_bit(AF_DEGRADED_MODE, &a->flags)) |
Bradley Grove | 26780d9 | 2013-08-23 10:35:45 -0400 | [diff] [blame] | 1229 | return FAILED; |
| 1230 | |
| 1231 | if (task_management_status == RS_BUSY) { |
| 1232 | /* |
| 1233 | * Busy, probably because we are flashing. Wait a bit and |
| 1234 | * try again. |
| 1235 | */ |
| 1236 | msleep(100); |
| 1237 | goto retry; |
| 1238 | } |
| 1239 | |
| 1240 | return SUCCESS; |
| 1241 | } |
| 1242 | |
| 1243 | int esas2r_device_reset(struct scsi_cmnd *cmd) |
| 1244 | { |
| 1245 | esas2r_log(ESAS2R_LOG_INFO, "device_reset (%p)", cmd); |
| 1246 | |
| 1247 | return esas2r_dev_targ_reset(cmd, false); |
| 1248 | |
| 1249 | } |
| 1250 | |
| 1251 | int esas2r_target_reset(struct scsi_cmnd *cmd) |
| 1252 | { |
| 1253 | esas2r_log(ESAS2R_LOG_INFO, "target_reset (%p)", cmd); |
| 1254 | |
| 1255 | return esas2r_dev_targ_reset(cmd, true); |
| 1256 | } |
| 1257 | |
Bradley Grove | 26780d9 | 2013-08-23 10:35:45 -0400 | [diff] [blame] | 1258 | void esas2r_log_request_failure(struct esas2r_adapter *a, |
| 1259 | struct esas2r_request *rq) |
| 1260 | { |
| 1261 | u8 reqstatus = rq->req_stat; |
| 1262 | |
| 1263 | if (reqstatus == RS_SUCCESS) |
| 1264 | return; |
| 1265 | |
| 1266 | if (rq->vrq->scsi.function == VDA_FUNC_SCSI) { |
| 1267 | if (reqstatus == RS_SCSI_ERROR) { |
| 1268 | if (rq->func_rsp.scsi_rsp.sense_len >= 13) { |
| 1269 | esas2r_log(ESAS2R_LOG_WARN, |
| 1270 | "request failure - SCSI error %x ASC:%x ASCQ:%x CDB:%x", |
| 1271 | rq->sense_buf[2], rq->sense_buf[12], |
| 1272 | rq->sense_buf[13], |
| 1273 | rq->vrq->scsi.cdb[0]); |
| 1274 | } else { |
| 1275 | esas2r_log(ESAS2R_LOG_WARN, |
| 1276 | "request failure - SCSI error CDB:%x\n", |
| 1277 | rq->vrq->scsi.cdb[0]); |
| 1278 | } |
| 1279 | } else if ((rq->vrq->scsi.cdb[0] != INQUIRY |
| 1280 | && rq->vrq->scsi.cdb[0] != REPORT_LUNS) |
| 1281 | || (reqstatus != RS_SEL |
| 1282 | && reqstatus != RS_SEL2)) { |
| 1283 | if ((reqstatus == RS_UNDERRUN) && |
| 1284 | (rq->vrq->scsi.cdb[0] == INQUIRY)) { |
| 1285 | /* Don't log inquiry underruns */ |
| 1286 | } else { |
| 1287 | esas2r_log(ESAS2R_LOG_WARN, |
| 1288 | "request failure - cdb:%x reqstatus:%d target:%d", |
| 1289 | rq->vrq->scsi.cdb[0], reqstatus, |
| 1290 | rq->target_id); |
| 1291 | } |
| 1292 | } |
| 1293 | } |
| 1294 | } |
| 1295 | |
| 1296 | void esas2r_wait_request(struct esas2r_adapter *a, struct esas2r_request *rq) |
| 1297 | { |
| 1298 | u32 starttime; |
| 1299 | u32 timeout; |
| 1300 | |
| 1301 | starttime = jiffies_to_msecs(jiffies); |
| 1302 | timeout = rq->timeout ? rq->timeout : 5000; |
| 1303 | |
| 1304 | while (true) { |
| 1305 | esas2r_polled_interrupt(a); |
| 1306 | |
| 1307 | if (rq->req_stat != RS_STARTED) |
| 1308 | break; |
| 1309 | |
| 1310 | schedule_timeout_interruptible(msecs_to_jiffies(100)); |
| 1311 | |
| 1312 | if ((jiffies_to_msecs(jiffies) - starttime) > timeout) { |
| 1313 | esas2r_hdebug("request TMO"); |
| 1314 | esas2r_bugon(); |
| 1315 | |
| 1316 | rq->req_stat = RS_TIMEOUT; |
| 1317 | |
| 1318 | esas2r_local_reset_adapter(a); |
| 1319 | return; |
| 1320 | } |
| 1321 | } |
| 1322 | } |
| 1323 | |
| 1324 | u32 esas2r_map_data_window(struct esas2r_adapter *a, u32 addr_lo) |
| 1325 | { |
| 1326 | u32 offset = addr_lo & (MW_DATA_WINDOW_SIZE - 1); |
| 1327 | u32 base = addr_lo & -(signed int)MW_DATA_WINDOW_SIZE; |
| 1328 | |
| 1329 | if (a->window_base != base) { |
| 1330 | esas2r_write_register_dword(a, MVR_PCI_WIN1_REMAP, |
| 1331 | base | MVRPW1R_ENABLE); |
| 1332 | esas2r_flush_register_dword(a, MVR_PCI_WIN1_REMAP); |
| 1333 | a->window_base = base; |
| 1334 | } |
| 1335 | |
| 1336 | return offset; |
| 1337 | } |
| 1338 | |
| 1339 | /* Read a block of data from chip memory */ |
| 1340 | bool esas2r_read_mem_block(struct esas2r_adapter *a, |
| 1341 | void *to, |
| 1342 | u32 from, |
| 1343 | u32 size) |
| 1344 | { |
| 1345 | u8 *end = (u8 *)to; |
| 1346 | |
| 1347 | while (size) { |
| 1348 | u32 len; |
| 1349 | u32 offset; |
| 1350 | u32 iatvr; |
| 1351 | |
| 1352 | iatvr = (from & -(signed int)MW_DATA_WINDOW_SIZE); |
| 1353 | |
| 1354 | esas2r_map_data_window(a, iatvr); |
| 1355 | |
| 1356 | offset = from & (MW_DATA_WINDOW_SIZE - 1); |
| 1357 | len = size; |
| 1358 | |
| 1359 | if (len > MW_DATA_WINDOW_SIZE - offset) |
| 1360 | len = MW_DATA_WINDOW_SIZE - offset; |
| 1361 | |
| 1362 | from += len; |
| 1363 | size -= len; |
| 1364 | |
| 1365 | while (len--) { |
| 1366 | *end++ = esas2r_read_data_byte(a, offset); |
| 1367 | offset++; |
| 1368 | } |
| 1369 | } |
| 1370 | |
| 1371 | return true; |
| 1372 | } |
| 1373 | |
| 1374 | void esas2r_nuxi_mgt_data(u8 function, void *data) |
| 1375 | { |
| 1376 | struct atto_vda_grp_info *g; |
| 1377 | struct atto_vda_devinfo *d; |
| 1378 | struct atto_vdapart_info *p; |
| 1379 | struct atto_vda_dh_info *h; |
| 1380 | struct atto_vda_metrics_info *m; |
| 1381 | struct atto_vda_schedule_info *s; |
| 1382 | struct atto_vda_buzzer_info *b; |
| 1383 | u8 i; |
| 1384 | |
| 1385 | switch (function) { |
| 1386 | case VDAMGT_BUZZER_INFO: |
| 1387 | case VDAMGT_BUZZER_SET: |
| 1388 | |
| 1389 | b = (struct atto_vda_buzzer_info *)data; |
| 1390 | |
| 1391 | b->duration = le32_to_cpu(b->duration); |
| 1392 | break; |
| 1393 | |
| 1394 | case VDAMGT_SCHEDULE_INFO: |
| 1395 | case VDAMGT_SCHEDULE_EVENT: |
| 1396 | |
| 1397 | s = (struct atto_vda_schedule_info *)data; |
| 1398 | |
| 1399 | s->id = le32_to_cpu(s->id); |
| 1400 | |
| 1401 | break; |
| 1402 | |
| 1403 | case VDAMGT_DEV_INFO: |
| 1404 | case VDAMGT_DEV_CLEAN: |
| 1405 | case VDAMGT_DEV_PT_INFO: |
| 1406 | case VDAMGT_DEV_FEATURES: |
| 1407 | case VDAMGT_DEV_PT_FEATURES: |
| 1408 | case VDAMGT_DEV_OPERATION: |
| 1409 | |
| 1410 | d = (struct atto_vda_devinfo *)data; |
| 1411 | |
| 1412 | d->capacity = le64_to_cpu(d->capacity); |
| 1413 | d->block_size = le32_to_cpu(d->block_size); |
| 1414 | d->ses_dev_index = le16_to_cpu(d->ses_dev_index); |
| 1415 | d->target_id = le16_to_cpu(d->target_id); |
| 1416 | d->lun = le16_to_cpu(d->lun); |
| 1417 | d->features = le16_to_cpu(d->features); |
| 1418 | break; |
| 1419 | |
| 1420 | case VDAMGT_GRP_INFO: |
| 1421 | case VDAMGT_GRP_CREATE: |
| 1422 | case VDAMGT_GRP_DELETE: |
| 1423 | case VDAMGT_ADD_STORAGE: |
| 1424 | case VDAMGT_MEMBER_ADD: |
| 1425 | case VDAMGT_GRP_COMMIT: |
| 1426 | case VDAMGT_GRP_REBUILD: |
| 1427 | case VDAMGT_GRP_COMMIT_INIT: |
| 1428 | case VDAMGT_QUICK_RAID: |
| 1429 | case VDAMGT_GRP_FEATURES: |
| 1430 | case VDAMGT_GRP_COMMIT_INIT_AUTOMAP: |
| 1431 | case VDAMGT_QUICK_RAID_INIT_AUTOMAP: |
| 1432 | case VDAMGT_SPARE_LIST: |
| 1433 | case VDAMGT_SPARE_ADD: |
| 1434 | case VDAMGT_SPARE_REMOVE: |
| 1435 | case VDAMGT_LOCAL_SPARE_ADD: |
| 1436 | case VDAMGT_GRP_OPERATION: |
| 1437 | |
| 1438 | g = (struct atto_vda_grp_info *)data; |
| 1439 | |
| 1440 | g->capacity = le64_to_cpu(g->capacity); |
| 1441 | g->block_size = le32_to_cpu(g->block_size); |
| 1442 | g->interleave = le32_to_cpu(g->interleave); |
| 1443 | g->features = le16_to_cpu(g->features); |
| 1444 | |
| 1445 | for (i = 0; i < 32; i++) |
| 1446 | g->members[i] = le16_to_cpu(g->members[i]); |
| 1447 | |
| 1448 | break; |
| 1449 | |
| 1450 | case VDAMGT_PART_INFO: |
| 1451 | case VDAMGT_PART_MAP: |
| 1452 | case VDAMGT_PART_UNMAP: |
| 1453 | case VDAMGT_PART_AUTOMAP: |
| 1454 | case VDAMGT_PART_SPLIT: |
| 1455 | case VDAMGT_PART_MERGE: |
| 1456 | |
| 1457 | p = (struct atto_vdapart_info *)data; |
| 1458 | |
| 1459 | p->part_size = le64_to_cpu(p->part_size); |
| 1460 | p->start_lba = le32_to_cpu(p->start_lba); |
| 1461 | p->block_size = le32_to_cpu(p->block_size); |
| 1462 | p->target_id = le16_to_cpu(p->target_id); |
| 1463 | break; |
| 1464 | |
| 1465 | case VDAMGT_DEV_HEALTH_REQ: |
| 1466 | |
| 1467 | h = (struct atto_vda_dh_info *)data; |
| 1468 | |
| 1469 | h->med_defect_cnt = le32_to_cpu(h->med_defect_cnt); |
| 1470 | h->info_exc_cnt = le32_to_cpu(h->info_exc_cnt); |
| 1471 | break; |
| 1472 | |
| 1473 | case VDAMGT_DEV_METRICS: |
| 1474 | |
| 1475 | m = (struct atto_vda_metrics_info *)data; |
| 1476 | |
| 1477 | for (i = 0; i < 32; i++) |
| 1478 | m->dev_indexes[i] = le16_to_cpu(m->dev_indexes[i]); |
| 1479 | |
| 1480 | break; |
| 1481 | |
| 1482 | default: |
| 1483 | break; |
| 1484 | } |
| 1485 | } |
| 1486 | |
| 1487 | void esas2r_nuxi_cfg_data(u8 function, void *data) |
| 1488 | { |
| 1489 | struct atto_vda_cfg_init *ci; |
| 1490 | |
| 1491 | switch (function) { |
| 1492 | case VDA_CFG_INIT: |
| 1493 | case VDA_CFG_GET_INIT: |
| 1494 | case VDA_CFG_GET_INIT2: |
| 1495 | |
| 1496 | ci = (struct atto_vda_cfg_init *)data; |
| 1497 | |
| 1498 | ci->date_time.year = le16_to_cpu(ci->date_time.year); |
| 1499 | ci->sgl_page_size = le32_to_cpu(ci->sgl_page_size); |
| 1500 | ci->vda_version = le32_to_cpu(ci->vda_version); |
| 1501 | ci->epoch_time = le32_to_cpu(ci->epoch_time); |
| 1502 | ci->ioctl_tunnel = le32_to_cpu(ci->ioctl_tunnel); |
| 1503 | ci->num_targets_backend = le32_to_cpu(ci->num_targets_backend); |
| 1504 | break; |
| 1505 | |
| 1506 | default: |
| 1507 | break; |
| 1508 | } |
| 1509 | } |
| 1510 | |
| 1511 | void esas2r_nuxi_ae_data(union atto_vda_ae *ae) |
| 1512 | { |
| 1513 | struct atto_vda_ae_raid *r = &ae->raid; |
| 1514 | struct atto_vda_ae_lu *l = &ae->lu; |
| 1515 | |
| 1516 | switch (ae->hdr.bytype) { |
| 1517 | case VDAAE_HDR_TYPE_RAID: |
| 1518 | |
| 1519 | r->dwflags = le32_to_cpu(r->dwflags); |
| 1520 | break; |
| 1521 | |
| 1522 | case VDAAE_HDR_TYPE_LU: |
| 1523 | |
| 1524 | l->dwevent = le32_to_cpu(l->dwevent); |
| 1525 | l->wphys_target_id = le16_to_cpu(l->wphys_target_id); |
| 1526 | l->id.tgtlun.wtarget_id = le16_to_cpu(l->id.tgtlun.wtarget_id); |
| 1527 | |
| 1528 | if (l->hdr.bylength >= offsetof(struct atto_vda_ae_lu, id) |
| 1529 | + sizeof(struct atto_vda_ae_lu_tgt_lun_raid)) { |
| 1530 | l->id.tgtlun_raid.dwinterleave |
| 1531 | = le32_to_cpu(l->id.tgtlun_raid.dwinterleave); |
| 1532 | l->id.tgtlun_raid.dwblock_size |
| 1533 | = le32_to_cpu(l->id.tgtlun_raid.dwblock_size); |
| 1534 | } |
| 1535 | |
| 1536 | break; |
| 1537 | |
| 1538 | case VDAAE_HDR_TYPE_DISK: |
| 1539 | default: |
| 1540 | break; |
| 1541 | } |
| 1542 | } |
| 1543 | |
| 1544 | void esas2r_free_request(struct esas2r_adapter *a, struct esas2r_request *rq) |
| 1545 | { |
| 1546 | unsigned long flags; |
| 1547 | |
| 1548 | esas2r_rq_destroy_request(rq, a); |
| 1549 | spin_lock_irqsave(&a->request_lock, flags); |
| 1550 | list_add(&rq->comp_list, &a->avail_request); |
| 1551 | spin_unlock_irqrestore(&a->request_lock, flags); |
| 1552 | } |
| 1553 | |
| 1554 | struct esas2r_request *esas2r_alloc_request(struct esas2r_adapter *a) |
| 1555 | { |
| 1556 | struct esas2r_request *rq; |
| 1557 | unsigned long flags; |
| 1558 | |
| 1559 | spin_lock_irqsave(&a->request_lock, flags); |
| 1560 | |
| 1561 | if (unlikely(list_empty(&a->avail_request))) { |
| 1562 | spin_unlock_irqrestore(&a->request_lock, flags); |
| 1563 | return NULL; |
| 1564 | } |
| 1565 | |
| 1566 | rq = list_first_entry(&a->avail_request, struct esas2r_request, |
| 1567 | comp_list); |
| 1568 | list_del(&rq->comp_list); |
| 1569 | spin_unlock_irqrestore(&a->request_lock, flags); |
| 1570 | esas2r_rq_init_request(rq, a); |
| 1571 | |
| 1572 | return rq; |
| 1573 | |
| 1574 | } |
| 1575 | |
| 1576 | void esas2r_complete_request_cb(struct esas2r_adapter *a, |
| 1577 | struct esas2r_request *rq) |
| 1578 | { |
| 1579 | esas2r_debug("completing request %p\n", rq); |
| 1580 | |
| 1581 | scsi_dma_unmap(rq->cmd); |
| 1582 | |
| 1583 | if (unlikely(rq->req_stat != RS_SUCCESS)) { |
| 1584 | esas2r_debug("[%x STATUS %x:%x (%x)]", rq->target_id, |
| 1585 | rq->req_stat, |
| 1586 | rq->func_rsp.scsi_rsp.scsi_stat, |
| 1587 | rq->cmd); |
| 1588 | |
| 1589 | rq->cmd->result = |
| 1590 | ((esas2r_req_status_to_error(rq->req_stat) << 16) |
| 1591 | | (rq->func_rsp.scsi_rsp.scsi_stat & STATUS_MASK)); |
| 1592 | |
| 1593 | if (rq->req_stat == RS_UNDERRUN) |
| 1594 | scsi_set_resid(rq->cmd, |
| 1595 | le32_to_cpu(rq->func_rsp.scsi_rsp. |
| 1596 | residual_length)); |
| 1597 | else |
| 1598 | scsi_set_resid(rq->cmd, 0); |
| 1599 | } |
| 1600 | |
| 1601 | rq->cmd->scsi_done(rq->cmd); |
| 1602 | |
| 1603 | esas2r_free_request(a, rq); |
| 1604 | } |
| 1605 | |
| 1606 | /* Run tasklet to handle stuff outside of interrupt context. */ |
| 1607 | void esas2r_adapter_tasklet(unsigned long context) |
| 1608 | { |
| 1609 | struct esas2r_adapter *a = (struct esas2r_adapter *)context; |
| 1610 | |
Bradley Grove | 9588d24 | 2013-10-01 14:26:01 -0400 | [diff] [blame] | 1611 | if (unlikely(test_bit(AF2_TIMER_TICK, &a->flags2))) { |
| 1612 | clear_bit(AF2_TIMER_TICK, &a->flags2); |
Bradley Grove | 26780d9 | 2013-08-23 10:35:45 -0400 | [diff] [blame] | 1613 | esas2r_timer_tick(a); |
| 1614 | } |
| 1615 | |
Bradley Grove | 9588d24 | 2013-10-01 14:26:01 -0400 | [diff] [blame] | 1616 | if (likely(test_bit(AF2_INT_PENDING, &a->flags2))) { |
| 1617 | clear_bit(AF2_INT_PENDING, &a->flags2); |
Bradley Grove | 26780d9 | 2013-08-23 10:35:45 -0400 | [diff] [blame] | 1618 | esas2r_adapter_interrupt(a); |
| 1619 | } |
| 1620 | |
| 1621 | if (esas2r_is_tasklet_pending(a)) |
| 1622 | esas2r_do_tasklet_tasks(a); |
| 1623 | |
| 1624 | if (esas2r_is_tasklet_pending(a) |
Bradley Grove | 9588d24 | 2013-10-01 14:26:01 -0400 | [diff] [blame] | 1625 | || (test_bit(AF2_INT_PENDING, &a->flags2)) |
| 1626 | || (test_bit(AF2_TIMER_TICK, &a->flags2))) { |
| 1627 | clear_bit(AF_TASKLET_SCHEDULED, &a->flags); |
Bradley Grove | 26780d9 | 2013-08-23 10:35:45 -0400 | [diff] [blame] | 1628 | esas2r_schedule_tasklet(a); |
| 1629 | } else { |
Bradley Grove | 9588d24 | 2013-10-01 14:26:01 -0400 | [diff] [blame] | 1630 | clear_bit(AF_TASKLET_SCHEDULED, &a->flags); |
Bradley Grove | 26780d9 | 2013-08-23 10:35:45 -0400 | [diff] [blame] | 1631 | } |
| 1632 | } |
| 1633 | |
| 1634 | static void esas2r_timer_callback(unsigned long context); |
| 1635 | |
| 1636 | void esas2r_kickoff_timer(struct esas2r_adapter *a) |
| 1637 | { |
| 1638 | init_timer(&a->timer); |
| 1639 | |
| 1640 | a->timer.function = esas2r_timer_callback; |
| 1641 | a->timer.data = (unsigned long)a; |
| 1642 | a->timer.expires = jiffies + |
| 1643 | msecs_to_jiffies(100); |
| 1644 | |
| 1645 | add_timer(&a->timer); |
| 1646 | } |
| 1647 | |
| 1648 | static void esas2r_timer_callback(unsigned long context) |
| 1649 | { |
| 1650 | struct esas2r_adapter *a = (struct esas2r_adapter *)context; |
| 1651 | |
Bradley Grove | 9588d24 | 2013-10-01 14:26:01 -0400 | [diff] [blame] | 1652 | set_bit(AF2_TIMER_TICK, &a->flags2); |
Bradley Grove | 26780d9 | 2013-08-23 10:35:45 -0400 | [diff] [blame] | 1653 | |
| 1654 | esas2r_schedule_tasklet(a); |
| 1655 | |
| 1656 | esas2r_kickoff_timer(a); |
| 1657 | } |
| 1658 | |
| 1659 | /* |
| 1660 | * Firmware events need to be handled outside of interrupt context |
| 1661 | * so we schedule a delayed_work to handle them. |
| 1662 | */ |
| 1663 | |
| 1664 | static void |
| 1665 | esas2r_free_fw_event(struct esas2r_fw_event_work *fw_event) |
| 1666 | { |
| 1667 | unsigned long flags; |
| 1668 | struct esas2r_adapter *a = fw_event->a; |
| 1669 | |
| 1670 | spin_lock_irqsave(&a->fw_event_lock, flags); |
| 1671 | list_del(&fw_event->list); |
| 1672 | kfree(fw_event); |
| 1673 | spin_unlock_irqrestore(&a->fw_event_lock, flags); |
| 1674 | } |
| 1675 | |
| 1676 | void |
| 1677 | esas2r_fw_event_off(struct esas2r_adapter *a) |
| 1678 | { |
| 1679 | unsigned long flags; |
| 1680 | |
| 1681 | spin_lock_irqsave(&a->fw_event_lock, flags); |
| 1682 | a->fw_events_off = 1; |
| 1683 | spin_unlock_irqrestore(&a->fw_event_lock, flags); |
| 1684 | } |
| 1685 | |
| 1686 | void |
| 1687 | esas2r_fw_event_on(struct esas2r_adapter *a) |
| 1688 | { |
| 1689 | unsigned long flags; |
| 1690 | |
| 1691 | spin_lock_irqsave(&a->fw_event_lock, flags); |
| 1692 | a->fw_events_off = 0; |
| 1693 | spin_unlock_irqrestore(&a->fw_event_lock, flags); |
| 1694 | } |
| 1695 | |
| 1696 | static void esas2r_add_device(struct esas2r_adapter *a, u16 target_id) |
| 1697 | { |
| 1698 | int ret; |
| 1699 | struct scsi_device *scsi_dev; |
| 1700 | |
| 1701 | scsi_dev = scsi_device_lookup(a->host, 0, target_id, 0); |
| 1702 | |
| 1703 | if (scsi_dev) { |
| 1704 | esas2r_log_dev( |
| 1705 | ESAS2R_LOG_WARN, |
| 1706 | &(scsi_dev-> |
| 1707 | sdev_gendev), |
| 1708 | "scsi device already exists at id %d", target_id); |
| 1709 | |
| 1710 | scsi_device_put(scsi_dev); |
| 1711 | } else { |
| 1712 | esas2r_log_dev( |
| 1713 | ESAS2R_LOG_INFO, |
| 1714 | &(a->host-> |
| 1715 | shost_gendev), |
| 1716 | "scsi_add_device() called for 0:%d:0", |
| 1717 | target_id); |
| 1718 | |
| 1719 | ret = scsi_add_device(a->host, 0, target_id, 0); |
| 1720 | if (ret) { |
| 1721 | esas2r_log_dev( |
| 1722 | ESAS2R_LOG_CRIT, |
| 1723 | &(a->host-> |
| 1724 | shost_gendev), |
| 1725 | "scsi_add_device failed with %d for id %d", |
| 1726 | ret, target_id); |
| 1727 | } |
| 1728 | } |
| 1729 | } |
| 1730 | |
| 1731 | static void esas2r_remove_device(struct esas2r_adapter *a, u16 target_id) |
| 1732 | { |
| 1733 | struct scsi_device *scsi_dev; |
| 1734 | |
| 1735 | scsi_dev = scsi_device_lookup(a->host, 0, target_id, 0); |
| 1736 | |
| 1737 | if (scsi_dev) { |
| 1738 | scsi_device_set_state(scsi_dev, SDEV_OFFLINE); |
| 1739 | |
| 1740 | esas2r_log_dev( |
| 1741 | ESAS2R_LOG_INFO, |
| 1742 | &(scsi_dev-> |
| 1743 | sdev_gendev), |
| 1744 | "scsi_remove_device() called for 0:%d:0", |
| 1745 | target_id); |
| 1746 | |
| 1747 | scsi_remove_device(scsi_dev); |
| 1748 | |
| 1749 | esas2r_log_dev( |
| 1750 | ESAS2R_LOG_INFO, |
| 1751 | &(scsi_dev-> |
| 1752 | sdev_gendev), |
| 1753 | "scsi_device_put() called"); |
| 1754 | |
| 1755 | scsi_device_put(scsi_dev); |
| 1756 | } else { |
| 1757 | esas2r_log_dev( |
| 1758 | ESAS2R_LOG_WARN, |
| 1759 | &(a->host->shost_gendev), |
| 1760 | "no target found at id %d", |
| 1761 | target_id); |
| 1762 | } |
| 1763 | } |
| 1764 | |
| 1765 | /* |
| 1766 | * Sends a firmware asynchronous event to anyone who happens to be |
| 1767 | * listening on the defined ATTO VDA event ports. |
| 1768 | */ |
| 1769 | static void esas2r_send_ae_event(struct esas2r_fw_event_work *fw_event) |
| 1770 | { |
| 1771 | struct esas2r_vda_ae *ae = (struct esas2r_vda_ae *)fw_event->data; |
| 1772 | char *type; |
| 1773 | |
| 1774 | switch (ae->vda_ae.hdr.bytype) { |
| 1775 | case VDAAE_HDR_TYPE_RAID: |
| 1776 | type = "RAID group state change"; |
| 1777 | break; |
| 1778 | |
| 1779 | case VDAAE_HDR_TYPE_LU: |
| 1780 | type = "Mapped destination LU change"; |
| 1781 | break; |
| 1782 | |
| 1783 | case VDAAE_HDR_TYPE_DISK: |
| 1784 | type = "Physical disk inventory change"; |
| 1785 | break; |
| 1786 | |
| 1787 | case VDAAE_HDR_TYPE_RESET: |
| 1788 | type = "Firmware reset"; |
| 1789 | break; |
| 1790 | |
| 1791 | case VDAAE_HDR_TYPE_LOG_INFO: |
| 1792 | type = "Event Log message (INFO level)"; |
| 1793 | break; |
| 1794 | |
| 1795 | case VDAAE_HDR_TYPE_LOG_WARN: |
| 1796 | type = "Event Log message (WARN level)"; |
| 1797 | break; |
| 1798 | |
| 1799 | case VDAAE_HDR_TYPE_LOG_CRIT: |
| 1800 | type = "Event Log message (CRIT level)"; |
| 1801 | break; |
| 1802 | |
| 1803 | case VDAAE_HDR_TYPE_LOG_FAIL: |
| 1804 | type = "Event Log message (FAIL level)"; |
| 1805 | break; |
| 1806 | |
| 1807 | case VDAAE_HDR_TYPE_NVC: |
| 1808 | type = "NVCache change"; |
| 1809 | break; |
| 1810 | |
| 1811 | case VDAAE_HDR_TYPE_TLG_INFO: |
| 1812 | type = "Time stamped log message (INFO level)"; |
| 1813 | break; |
| 1814 | |
| 1815 | case VDAAE_HDR_TYPE_TLG_WARN: |
| 1816 | type = "Time stamped log message (WARN level)"; |
| 1817 | break; |
| 1818 | |
| 1819 | case VDAAE_HDR_TYPE_TLG_CRIT: |
| 1820 | type = "Time stamped log message (CRIT level)"; |
| 1821 | break; |
| 1822 | |
| 1823 | case VDAAE_HDR_TYPE_PWRMGT: |
| 1824 | type = "Power management"; |
| 1825 | break; |
| 1826 | |
| 1827 | case VDAAE_HDR_TYPE_MUTE: |
| 1828 | type = "Mute button pressed"; |
| 1829 | break; |
| 1830 | |
| 1831 | case VDAAE_HDR_TYPE_DEV: |
| 1832 | type = "Device attribute change"; |
| 1833 | break; |
| 1834 | |
| 1835 | default: |
| 1836 | type = "Unknown"; |
| 1837 | break; |
| 1838 | } |
| 1839 | |
| 1840 | esas2r_log(ESAS2R_LOG_WARN, |
| 1841 | "An async event of type \"%s\" was received from the firmware. The event contents are:", |
| 1842 | type); |
| 1843 | esas2r_log_hexdump(ESAS2R_LOG_WARN, &ae->vda_ae, |
| 1844 | ae->vda_ae.hdr.bylength); |
| 1845 | |
| 1846 | } |
| 1847 | |
| 1848 | static void |
| 1849 | esas2r_firmware_event_work(struct work_struct *work) |
| 1850 | { |
| 1851 | struct esas2r_fw_event_work *fw_event = |
| 1852 | container_of(work, struct esas2r_fw_event_work, work.work); |
| 1853 | |
| 1854 | struct esas2r_adapter *a = fw_event->a; |
| 1855 | |
| 1856 | u16 target_id = *(u16 *)&fw_event->data[0]; |
| 1857 | |
| 1858 | if (a->fw_events_off) |
| 1859 | goto done; |
| 1860 | |
| 1861 | switch (fw_event->type) { |
| 1862 | case fw_event_null: |
| 1863 | break; /* do nothing */ |
| 1864 | |
| 1865 | case fw_event_lun_change: |
| 1866 | esas2r_remove_device(a, target_id); |
| 1867 | esas2r_add_device(a, target_id); |
| 1868 | break; |
| 1869 | |
| 1870 | case fw_event_present: |
| 1871 | esas2r_add_device(a, target_id); |
| 1872 | break; |
| 1873 | |
| 1874 | case fw_event_not_present: |
| 1875 | esas2r_remove_device(a, target_id); |
| 1876 | break; |
| 1877 | |
| 1878 | case fw_event_vda_ae: |
| 1879 | esas2r_send_ae_event(fw_event); |
| 1880 | break; |
| 1881 | } |
| 1882 | |
| 1883 | done: |
| 1884 | esas2r_free_fw_event(fw_event); |
| 1885 | } |
| 1886 | |
| 1887 | void esas2r_queue_fw_event(struct esas2r_adapter *a, |
| 1888 | enum fw_event_type type, |
| 1889 | void *data, |
| 1890 | int data_sz) |
| 1891 | { |
| 1892 | struct esas2r_fw_event_work *fw_event; |
| 1893 | unsigned long flags; |
| 1894 | |
| 1895 | fw_event = kzalloc(sizeof(struct esas2r_fw_event_work), GFP_ATOMIC); |
| 1896 | if (!fw_event) { |
| 1897 | esas2r_log(ESAS2R_LOG_WARN, |
| 1898 | "esas2r_queue_fw_event failed to alloc"); |
| 1899 | return; |
| 1900 | } |
| 1901 | |
| 1902 | if (type == fw_event_vda_ae) { |
| 1903 | struct esas2r_vda_ae *ae = |
| 1904 | (struct esas2r_vda_ae *)fw_event->data; |
| 1905 | |
| 1906 | ae->signature = ESAS2R_VDA_EVENT_SIG; |
| 1907 | ae->bus_number = a->pcid->bus->number; |
| 1908 | ae->devfn = a->pcid->devfn; |
| 1909 | memcpy(&ae->vda_ae, data, sizeof(ae->vda_ae)); |
| 1910 | } else { |
| 1911 | memcpy(fw_event->data, data, data_sz); |
| 1912 | } |
| 1913 | |
| 1914 | fw_event->type = type; |
| 1915 | fw_event->a = a; |
| 1916 | |
| 1917 | spin_lock_irqsave(&a->fw_event_lock, flags); |
| 1918 | list_add_tail(&fw_event->list, &a->fw_event_list); |
| 1919 | INIT_DELAYED_WORK(&fw_event->work, esas2r_firmware_event_work); |
| 1920 | queue_delayed_work_on( |
| 1921 | smp_processor_id(), a->fw_event_q, &fw_event->work, |
| 1922 | msecs_to_jiffies(1)); |
| 1923 | spin_unlock_irqrestore(&a->fw_event_lock, flags); |
| 1924 | } |
| 1925 | |
| 1926 | void esas2r_target_state_changed(struct esas2r_adapter *a, u16 targ_id, |
| 1927 | u8 state) |
| 1928 | { |
| 1929 | if (state == TS_LUN_CHANGE) |
| 1930 | esas2r_queue_fw_event(a, fw_event_lun_change, &targ_id, |
| 1931 | sizeof(targ_id)); |
| 1932 | else if (state == TS_PRESENT) |
| 1933 | esas2r_queue_fw_event(a, fw_event_present, &targ_id, |
| 1934 | sizeof(targ_id)); |
| 1935 | else if (state == TS_NOT_PRESENT) |
| 1936 | esas2r_queue_fw_event(a, fw_event_not_present, &targ_id, |
| 1937 | sizeof(targ_id)); |
| 1938 | } |
| 1939 | |
| 1940 | /* Translate status to a Linux SCSI mid-layer error code */ |
| 1941 | int esas2r_req_status_to_error(u8 req_stat) |
| 1942 | { |
| 1943 | switch (req_stat) { |
| 1944 | case RS_OVERRUN: |
| 1945 | case RS_UNDERRUN: |
| 1946 | case RS_SUCCESS: |
| 1947 | /* |
| 1948 | * NOTE: SCSI mid-layer wants a good status for a SCSI error, because |
| 1949 | * it will check the scsi_stat value in the completion anyway. |
| 1950 | */ |
| 1951 | case RS_SCSI_ERROR: |
| 1952 | return DID_OK; |
| 1953 | |
| 1954 | case RS_SEL: |
| 1955 | case RS_SEL2: |
| 1956 | return DID_NO_CONNECT; |
| 1957 | |
| 1958 | case RS_RESET: |
| 1959 | return DID_RESET; |
| 1960 | |
| 1961 | case RS_ABORTED: |
| 1962 | return DID_ABORT; |
| 1963 | |
| 1964 | case RS_BUSY: |
| 1965 | return DID_BUS_BUSY; |
| 1966 | } |
| 1967 | |
| 1968 | /* everything else is just an error. */ |
| 1969 | |
| 1970 | return DID_ERROR; |
| 1971 | } |
| 1972 | |
| 1973 | module_init(esas2r_init); |
| 1974 | module_exit(esas2r_exit); |