Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Disk Array driver for HP Smart Array SAS controllers |
| 3 | * Copyright 2000, 2009 Hewlett-Packard Development Company, L.P. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; version 2 of the License. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or |
| 12 | * NON INFRINGEMENT. See the GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 17 | * |
| 18 | * Questions/Comments/Bugfixes to iss_storagedev@hp.com |
| 19 | * |
| 20 | */ |
| 21 | |
| 22 | #include <linux/module.h> |
| 23 | #include <linux/interrupt.h> |
| 24 | #include <linux/types.h> |
| 25 | #include <linux/pci.h> |
| 26 | #include <linux/kernel.h> |
| 27 | #include <linux/slab.h> |
| 28 | #include <linux/delay.h> |
| 29 | #include <linux/fs.h> |
| 30 | #include <linux/timer.h> |
| 31 | #include <linux/seq_file.h> |
| 32 | #include <linux/init.h> |
| 33 | #include <linux/spinlock.h> |
| 34 | #include <linux/smp_lock.h> |
| 35 | #include <linux/compat.h> |
| 36 | #include <linux/blktrace_api.h> |
| 37 | #include <linux/uaccess.h> |
| 38 | #include <linux/io.h> |
| 39 | #include <linux/dma-mapping.h> |
| 40 | #include <linux/completion.h> |
| 41 | #include <linux/moduleparam.h> |
| 42 | #include <scsi/scsi.h> |
| 43 | #include <scsi/scsi_cmnd.h> |
| 44 | #include <scsi/scsi_device.h> |
| 45 | #include <scsi/scsi_host.h> |
| 46 | #include <linux/cciss_ioctl.h> |
| 47 | #include <linux/string.h> |
| 48 | #include <linux/bitmap.h> |
| 49 | #include <asm/atomic.h> |
| 50 | #include <linux/kthread.h> |
| 51 | #include "hpsa_cmd.h" |
| 52 | #include "hpsa.h" |
| 53 | |
| 54 | /* HPSA_DRIVER_VERSION must be 3 byte values (0-255) separated by '.' */ |
| 55 | #define HPSA_DRIVER_VERSION "1.0.0" |
| 56 | #define DRIVER_NAME "HP HPSA Driver (v " HPSA_DRIVER_VERSION ")" |
| 57 | |
| 58 | /* How long to wait (in milliseconds) for board to go into simple mode */ |
| 59 | #define MAX_CONFIG_WAIT 30000 |
| 60 | #define MAX_IOCTL_CONFIG_WAIT 1000 |
| 61 | |
| 62 | /*define how many times we will try a command because of bus resets */ |
| 63 | #define MAX_CMD_RETRIES 3 |
| 64 | |
| 65 | /* Embedded module documentation macros - see modules.h */ |
| 66 | MODULE_AUTHOR("Hewlett-Packard Company"); |
| 67 | MODULE_DESCRIPTION("Driver for HP Smart Array Controller version " \ |
| 68 | HPSA_DRIVER_VERSION); |
| 69 | MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers"); |
| 70 | MODULE_VERSION(HPSA_DRIVER_VERSION); |
| 71 | MODULE_LICENSE("GPL"); |
| 72 | |
| 73 | static int hpsa_allow_any; |
| 74 | module_param(hpsa_allow_any, int, S_IRUGO|S_IWUSR); |
| 75 | MODULE_PARM_DESC(hpsa_allow_any, |
| 76 | "Allow hpsa driver to access unknown HP Smart Array hardware"); |
| 77 | |
| 78 | /* define the PCI info for the cards we can control */ |
| 79 | static const struct pci_device_id hpsa_pci_device_id[] = { |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 80 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241}, |
| 81 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243}, |
| 82 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245}, |
| 83 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247}, |
| 84 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249}, |
| 85 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324a}, |
| 86 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324b}, |
Mike Miller | f8b01eb | 2010-02-04 08:42:45 -0600 | [diff] [blame] | 87 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3233}, |
| 88 | #define PCI_DEVICE_ID_HP_CISSF 0x333f |
| 89 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x333F}, |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 90 | {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, |
| 91 | PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0}, |
| 92 | {0,} |
| 93 | }; |
| 94 | |
| 95 | MODULE_DEVICE_TABLE(pci, hpsa_pci_device_id); |
| 96 | |
| 97 | /* board_id = Subsystem Device ID & Vendor ID |
| 98 | * product = Marketing Name for the board |
| 99 | * access = Address of the struct of function pointers |
| 100 | */ |
| 101 | static struct board_type products[] = { |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 102 | {0x3241103C, "Smart Array P212", &SA5_access}, |
| 103 | {0x3243103C, "Smart Array P410", &SA5_access}, |
| 104 | {0x3245103C, "Smart Array P410i", &SA5_access}, |
| 105 | {0x3247103C, "Smart Array P411", &SA5_access}, |
| 106 | {0x3249103C, "Smart Array P812", &SA5_access}, |
| 107 | {0x324a103C, "Smart Array P712m", &SA5_access}, |
| 108 | {0x324b103C, "Smart Array P711m", &SA5_access}, |
Mike Miller | f8b01eb | 2010-02-04 08:42:45 -0600 | [diff] [blame] | 109 | {0x3233103C, "StorageWorks P1210m", &SA5_access}, |
| 110 | {0x333F103C, "StorageWorks P1210m", &SA5_access}, |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 111 | {0xFFFF103C, "Unknown Smart Array", &SA5_access}, |
| 112 | }; |
| 113 | |
| 114 | static int number_of_controllers; |
| 115 | |
| 116 | static irqreturn_t do_hpsa_intr(int irq, void *dev_id); |
| 117 | static int hpsa_ioctl(struct scsi_device *dev, int cmd, void *arg); |
| 118 | static void start_io(struct ctlr_info *h); |
| 119 | |
| 120 | #ifdef CONFIG_COMPAT |
| 121 | static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void *arg); |
| 122 | #endif |
| 123 | |
| 124 | static void cmd_free(struct ctlr_info *h, struct CommandList *c); |
| 125 | static void cmd_special_free(struct ctlr_info *h, struct CommandList *c); |
| 126 | static struct CommandList *cmd_alloc(struct ctlr_info *h); |
| 127 | static struct CommandList *cmd_special_alloc(struct ctlr_info *h); |
Stephen M. Cameron | 01a02ff | 2010-02-04 08:41:33 -0600 | [diff] [blame] | 128 | static void fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h, |
| 129 | void *buff, size_t size, u8 page_code, unsigned char *scsi3addr, |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 130 | int cmd_type); |
| 131 | |
| 132 | static int hpsa_scsi_queue_command(struct scsi_cmnd *cmd, |
| 133 | void (*done)(struct scsi_cmnd *)); |
Stephen M. Cameron | a08a847 | 2010-02-04 08:43:16 -0600 | [diff] [blame] | 134 | static void hpsa_scan_start(struct Scsi_Host *); |
| 135 | static int hpsa_scan_finished(struct Scsi_Host *sh, |
| 136 | unsigned long elapsed_time); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 137 | |
| 138 | static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd); |
| 139 | static int hpsa_slave_alloc(struct scsi_device *sdev); |
| 140 | static void hpsa_slave_destroy(struct scsi_device *sdev); |
| 141 | |
| 142 | static ssize_t raid_level_show(struct device *dev, |
| 143 | struct device_attribute *attr, char *buf); |
| 144 | static ssize_t lunid_show(struct device *dev, |
| 145 | struct device_attribute *attr, char *buf); |
| 146 | static ssize_t unique_id_show(struct device *dev, |
| 147 | struct device_attribute *attr, char *buf); |
| 148 | static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno); |
| 149 | static ssize_t host_store_rescan(struct device *dev, |
| 150 | struct device_attribute *attr, const char *buf, size_t count); |
| 151 | static int check_for_unit_attention(struct ctlr_info *h, |
| 152 | struct CommandList *c); |
| 153 | static void check_ioctl_unit_attention(struct ctlr_info *h, |
| 154 | struct CommandList *c); |
Don Brace | 303932f | 2010-02-04 08:42:40 -0600 | [diff] [blame] | 155 | /* performant mode helper functions */ |
| 156 | static void calc_bucket_map(int *bucket, int num_buckets, |
| 157 | int nsgs, int *bucket_map); |
| 158 | static void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h); |
| 159 | static inline u32 next_command(struct ctlr_info *h); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 160 | |
| 161 | static DEVICE_ATTR(raid_level, S_IRUGO, raid_level_show, NULL); |
| 162 | static DEVICE_ATTR(lunid, S_IRUGO, lunid_show, NULL); |
| 163 | static DEVICE_ATTR(unique_id, S_IRUGO, unique_id_show, NULL); |
| 164 | static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan); |
| 165 | |
| 166 | static struct device_attribute *hpsa_sdev_attrs[] = { |
| 167 | &dev_attr_raid_level, |
| 168 | &dev_attr_lunid, |
| 169 | &dev_attr_unique_id, |
| 170 | NULL, |
| 171 | }; |
| 172 | |
| 173 | static struct device_attribute *hpsa_shost_attrs[] = { |
| 174 | &dev_attr_rescan, |
| 175 | NULL, |
| 176 | }; |
| 177 | |
| 178 | static struct scsi_host_template hpsa_driver_template = { |
| 179 | .module = THIS_MODULE, |
| 180 | .name = "hpsa", |
| 181 | .proc_name = "hpsa", |
| 182 | .queuecommand = hpsa_scsi_queue_command, |
Stephen M. Cameron | a08a847 | 2010-02-04 08:43:16 -0600 | [diff] [blame] | 183 | .scan_start = hpsa_scan_start, |
| 184 | .scan_finished = hpsa_scan_finished, |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 185 | .this_id = -1, |
| 186 | .sg_tablesize = MAXSGENTRIES, |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 187 | .use_clustering = ENABLE_CLUSTERING, |
| 188 | .eh_device_reset_handler = hpsa_eh_device_reset_handler, |
| 189 | .ioctl = hpsa_ioctl, |
| 190 | .slave_alloc = hpsa_slave_alloc, |
| 191 | .slave_destroy = hpsa_slave_destroy, |
| 192 | #ifdef CONFIG_COMPAT |
| 193 | .compat_ioctl = hpsa_compat_ioctl, |
| 194 | #endif |
| 195 | .sdev_attrs = hpsa_sdev_attrs, |
| 196 | .shost_attrs = hpsa_shost_attrs, |
| 197 | }; |
| 198 | |
| 199 | static inline struct ctlr_info *sdev_to_hba(struct scsi_device *sdev) |
| 200 | { |
| 201 | unsigned long *priv = shost_priv(sdev->host); |
| 202 | return (struct ctlr_info *) *priv; |
| 203 | } |
| 204 | |
Stephen M. Cameron | a23513e | 2010-02-04 08:43:11 -0600 | [diff] [blame] | 205 | static inline struct ctlr_info *shost_to_hba(struct Scsi_Host *sh) |
| 206 | { |
| 207 | unsigned long *priv = shost_priv(sh); |
| 208 | return (struct ctlr_info *) *priv; |
| 209 | } |
| 210 | |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 211 | static struct task_struct *hpsa_scan_thread; |
| 212 | static DEFINE_MUTEX(hpsa_scan_mutex); |
| 213 | static LIST_HEAD(hpsa_scan_q); |
| 214 | static int hpsa_scan_func(void *data); |
| 215 | |
| 216 | /** |
| 217 | * add_to_scan_list() - add controller to rescan queue |
| 218 | * @h: Pointer to the controller. |
| 219 | * |
| 220 | * Adds the controller to the rescan queue if not already on the queue. |
| 221 | * |
| 222 | * returns 1 if added to the queue, 0 if skipped (could be on the |
| 223 | * queue already, or the controller could be initializing or shutting |
| 224 | * down). |
| 225 | **/ |
| 226 | static int add_to_scan_list(struct ctlr_info *h) |
| 227 | { |
| 228 | struct ctlr_info *test_h; |
| 229 | int found = 0; |
| 230 | int ret = 0; |
| 231 | |
| 232 | if (h->busy_initializing) |
| 233 | return 0; |
| 234 | |
| 235 | /* |
| 236 | * If we don't get the lock, it means the driver is unloading |
| 237 | * and there's no point in scheduling a new scan. |
| 238 | */ |
| 239 | if (!mutex_trylock(&h->busy_shutting_down)) |
| 240 | return 0; |
| 241 | |
| 242 | mutex_lock(&hpsa_scan_mutex); |
| 243 | list_for_each_entry(test_h, &hpsa_scan_q, scan_list) { |
| 244 | if (test_h == h) { |
| 245 | found = 1; |
| 246 | break; |
| 247 | } |
| 248 | } |
| 249 | if (!found && !h->busy_scanning) { |
| 250 | INIT_COMPLETION(h->scan_wait); |
| 251 | list_add_tail(&h->scan_list, &hpsa_scan_q); |
| 252 | ret = 1; |
| 253 | } |
| 254 | mutex_unlock(&hpsa_scan_mutex); |
| 255 | mutex_unlock(&h->busy_shutting_down); |
| 256 | |
| 257 | return ret; |
| 258 | } |
| 259 | |
| 260 | /** |
| 261 | * remove_from_scan_list() - remove controller from rescan queue |
| 262 | * @h: Pointer to the controller. |
| 263 | * |
| 264 | * Removes the controller from the rescan queue if present. Blocks if |
| 265 | * the controller is currently conducting a rescan. The controller |
| 266 | * can be in one of three states: |
| 267 | * 1. Doesn't need a scan |
| 268 | * 2. On the scan list, but not scanning yet (we remove it) |
| 269 | * 3. Busy scanning (and not on the list). In this case we want to wait for |
| 270 | * the scan to complete to make sure the scanning thread for this |
| 271 | * controller is completely idle. |
| 272 | **/ |
| 273 | static void remove_from_scan_list(struct ctlr_info *h) |
| 274 | { |
| 275 | struct ctlr_info *test_h, *tmp_h; |
| 276 | |
| 277 | mutex_lock(&hpsa_scan_mutex); |
| 278 | list_for_each_entry_safe(test_h, tmp_h, &hpsa_scan_q, scan_list) { |
| 279 | if (test_h == h) { /* state 2. */ |
| 280 | list_del(&h->scan_list); |
| 281 | complete_all(&h->scan_wait); |
| 282 | mutex_unlock(&hpsa_scan_mutex); |
| 283 | return; |
| 284 | } |
| 285 | } |
| 286 | if (h->busy_scanning) { /* state 3. */ |
| 287 | mutex_unlock(&hpsa_scan_mutex); |
| 288 | wait_for_completion(&h->scan_wait); |
| 289 | } else { /* state 1, nothing to do. */ |
| 290 | mutex_unlock(&hpsa_scan_mutex); |
| 291 | } |
| 292 | } |
| 293 | |
| 294 | /* hpsa_scan_func() - kernel thread used to rescan controllers |
| 295 | * @data: Ignored. |
| 296 | * |
| 297 | * A kernel thread used scan for drive topology changes on |
| 298 | * controllers. The thread processes only one controller at a time |
| 299 | * using a queue. Controllers are added to the queue using |
| 300 | * add_to_scan_list() and removed from the queue either after done |
| 301 | * processing or using remove_from_scan_list(). |
| 302 | * |
| 303 | * returns 0. |
| 304 | **/ |
| 305 | static int hpsa_scan_func(__attribute__((unused)) void *data) |
| 306 | { |
| 307 | struct ctlr_info *h; |
| 308 | int host_no; |
| 309 | |
| 310 | while (1) { |
| 311 | set_current_state(TASK_INTERRUPTIBLE); |
| 312 | schedule(); |
| 313 | if (kthread_should_stop()) |
| 314 | break; |
| 315 | |
| 316 | while (1) { |
| 317 | mutex_lock(&hpsa_scan_mutex); |
| 318 | if (list_empty(&hpsa_scan_q)) { |
| 319 | mutex_unlock(&hpsa_scan_mutex); |
| 320 | break; |
| 321 | } |
| 322 | h = list_entry(hpsa_scan_q.next, struct ctlr_info, |
| 323 | scan_list); |
| 324 | list_del(&h->scan_list); |
| 325 | h->busy_scanning = 1; |
| 326 | mutex_unlock(&hpsa_scan_mutex); |
| 327 | host_no = h->scsi_host ? h->scsi_host->host_no : -1; |
Stephen M. Cameron | a08a847 | 2010-02-04 08:43:16 -0600 | [diff] [blame] | 328 | hpsa_scan_start(h->scsi_host); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 329 | complete_all(&h->scan_wait); |
| 330 | mutex_lock(&hpsa_scan_mutex); |
| 331 | h->busy_scanning = 0; |
| 332 | mutex_unlock(&hpsa_scan_mutex); |
| 333 | } |
| 334 | } |
| 335 | return 0; |
| 336 | } |
| 337 | |
| 338 | static int check_for_unit_attention(struct ctlr_info *h, |
| 339 | struct CommandList *c) |
| 340 | { |
| 341 | if (c->err_info->SenseInfo[2] != UNIT_ATTENTION) |
| 342 | return 0; |
| 343 | |
| 344 | switch (c->err_info->SenseInfo[12]) { |
| 345 | case STATE_CHANGED: |
| 346 | dev_warn(&h->pdev->dev, "hpsa%d: a state change " |
| 347 | "detected, command retried\n", h->ctlr); |
| 348 | break; |
| 349 | case LUN_FAILED: |
| 350 | dev_warn(&h->pdev->dev, "hpsa%d: LUN failure " |
| 351 | "detected, action required\n", h->ctlr); |
| 352 | break; |
| 353 | case REPORT_LUNS_CHANGED: |
| 354 | dev_warn(&h->pdev->dev, "hpsa%d: report LUN data " |
| 355 | "changed\n", h->ctlr); |
| 356 | /* |
| 357 | * Here, we could call add_to_scan_list and wake up the scan thread, |
| 358 | * except that it's quite likely that we will get more than one |
| 359 | * REPORT_LUNS_CHANGED condition in quick succession, which means |
| 360 | * that those which occur after the first one will likely happen |
| 361 | * *during* the hpsa_scan_thread's rescan. And the rescan code is not |
| 362 | * robust enough to restart in the middle, undoing what it has already |
| 363 | * done, and it's not clear that it's even possible to do this, since |
| 364 | * part of what it does is notify the SCSI mid layer, which starts |
| 365 | * doing it's own i/o to read partition tables and so on, and the |
| 366 | * driver doesn't have visibility to know what might need undoing. |
| 367 | * In any event, if possible, it is horribly complicated to get right |
| 368 | * so we just don't do it for now. |
| 369 | * |
| 370 | * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012. |
| 371 | */ |
| 372 | break; |
| 373 | case POWER_OR_RESET: |
| 374 | dev_warn(&h->pdev->dev, "hpsa%d: a power on " |
| 375 | "or device reset detected\n", h->ctlr); |
| 376 | break; |
| 377 | case UNIT_ATTENTION_CLEARED: |
| 378 | dev_warn(&h->pdev->dev, "hpsa%d: unit attention " |
| 379 | "cleared by another initiator\n", h->ctlr); |
| 380 | break; |
| 381 | default: |
| 382 | dev_warn(&h->pdev->dev, "hpsa%d: unknown " |
| 383 | "unit attention detected\n", h->ctlr); |
| 384 | break; |
| 385 | } |
| 386 | return 1; |
| 387 | } |
| 388 | |
| 389 | static ssize_t host_store_rescan(struct device *dev, |
| 390 | struct device_attribute *attr, |
| 391 | const char *buf, size_t count) |
| 392 | { |
| 393 | struct ctlr_info *h; |
| 394 | struct Scsi_Host *shost = class_to_shost(dev); |
Stephen M. Cameron | a23513e | 2010-02-04 08:43:11 -0600 | [diff] [blame] | 395 | h = shost_to_hba(shost); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 396 | if (add_to_scan_list(h)) { |
| 397 | wake_up_process(hpsa_scan_thread); |
| 398 | wait_for_completion_interruptible(&h->scan_wait); |
| 399 | } |
| 400 | return count; |
| 401 | } |
| 402 | |
| 403 | /* Enqueuing and dequeuing functions for cmdlists. */ |
| 404 | static inline void addQ(struct hlist_head *list, struct CommandList *c) |
| 405 | { |
| 406 | hlist_add_head(&c->list, list); |
| 407 | } |
| 408 | |
Don Brace | 303932f | 2010-02-04 08:42:40 -0600 | [diff] [blame] | 409 | static inline u32 next_command(struct ctlr_info *h) |
| 410 | { |
| 411 | u32 a; |
| 412 | |
| 413 | if (unlikely(h->transMethod != CFGTBL_Trans_Performant)) |
| 414 | return h->access.command_completed(h); |
| 415 | |
| 416 | if ((*(h->reply_pool_head) & 1) == (h->reply_pool_wraparound)) { |
| 417 | a = *(h->reply_pool_head); /* Next cmd in ring buffer */ |
| 418 | (h->reply_pool_head)++; |
| 419 | h->commands_outstanding--; |
| 420 | } else { |
| 421 | a = FIFO_EMPTY; |
| 422 | } |
| 423 | /* Check for wraparound */ |
| 424 | if (h->reply_pool_head == (h->reply_pool + h->max_commands)) { |
| 425 | h->reply_pool_head = h->reply_pool; |
| 426 | h->reply_pool_wraparound ^= 1; |
| 427 | } |
| 428 | return a; |
| 429 | } |
| 430 | |
| 431 | /* set_performant_mode: Modify the tag for cciss performant |
| 432 | * set bit 0 for pull model, bits 3-1 for block fetch |
| 433 | * register number |
| 434 | */ |
| 435 | static void set_performant_mode(struct ctlr_info *h, struct CommandList *c) |
| 436 | { |
| 437 | if (likely(h->transMethod == CFGTBL_Trans_Performant)) |
| 438 | c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1); |
| 439 | } |
| 440 | |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 441 | static void enqueue_cmd_and_start_io(struct ctlr_info *h, |
| 442 | struct CommandList *c) |
| 443 | { |
| 444 | unsigned long flags; |
Don Brace | 303932f | 2010-02-04 08:42:40 -0600 | [diff] [blame] | 445 | |
| 446 | set_performant_mode(h, c); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 447 | spin_lock_irqsave(&h->lock, flags); |
| 448 | addQ(&h->reqQ, c); |
| 449 | h->Qdepth++; |
| 450 | start_io(h); |
| 451 | spin_unlock_irqrestore(&h->lock, flags); |
| 452 | } |
| 453 | |
| 454 | static inline void removeQ(struct CommandList *c) |
| 455 | { |
| 456 | if (WARN_ON(hlist_unhashed(&c->list))) |
| 457 | return; |
| 458 | hlist_del_init(&c->list); |
| 459 | } |
| 460 | |
| 461 | static inline int is_hba_lunid(unsigned char scsi3addr[]) |
| 462 | { |
| 463 | return memcmp(scsi3addr, RAID_CTLR_LUNID, 8) == 0; |
| 464 | } |
| 465 | |
| 466 | static inline int is_logical_dev_addr_mode(unsigned char scsi3addr[]) |
| 467 | { |
| 468 | return (scsi3addr[3] & 0xC0) == 0x40; |
| 469 | } |
| 470 | |
Stephen M. Cameron | 339b2b1 | 2010-02-04 08:42:50 -0600 | [diff] [blame] | 471 | static inline int is_scsi_rev_5(struct ctlr_info *h) |
| 472 | { |
| 473 | if (!h->hba_inquiry_data) |
| 474 | return 0; |
| 475 | if ((h->hba_inquiry_data[2] & 0x07) == 5) |
| 476 | return 1; |
| 477 | return 0; |
| 478 | } |
| 479 | |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 480 | static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG", |
| 481 | "UNKNOWN" |
| 482 | }; |
| 483 | #define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 1) |
| 484 | |
| 485 | static ssize_t raid_level_show(struct device *dev, |
| 486 | struct device_attribute *attr, char *buf) |
| 487 | { |
| 488 | ssize_t l = 0; |
Stephen M. Cameron | 82a72c0 | 2010-02-04 08:41:38 -0600 | [diff] [blame] | 489 | unsigned char rlevel; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 490 | struct ctlr_info *h; |
| 491 | struct scsi_device *sdev; |
| 492 | struct hpsa_scsi_dev_t *hdev; |
| 493 | unsigned long flags; |
| 494 | |
| 495 | sdev = to_scsi_device(dev); |
| 496 | h = sdev_to_hba(sdev); |
| 497 | spin_lock_irqsave(&h->lock, flags); |
| 498 | hdev = sdev->hostdata; |
| 499 | if (!hdev) { |
| 500 | spin_unlock_irqrestore(&h->lock, flags); |
| 501 | return -ENODEV; |
| 502 | } |
| 503 | |
| 504 | /* Is this even a logical drive? */ |
| 505 | if (!is_logical_dev_addr_mode(hdev->scsi3addr)) { |
| 506 | spin_unlock_irqrestore(&h->lock, flags); |
| 507 | l = snprintf(buf, PAGE_SIZE, "N/A\n"); |
| 508 | return l; |
| 509 | } |
| 510 | |
| 511 | rlevel = hdev->raid_level; |
| 512 | spin_unlock_irqrestore(&h->lock, flags); |
Stephen M. Cameron | 82a72c0 | 2010-02-04 08:41:38 -0600 | [diff] [blame] | 513 | if (rlevel > RAID_UNKNOWN) |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 514 | rlevel = RAID_UNKNOWN; |
| 515 | l = snprintf(buf, PAGE_SIZE, "RAID %s\n", raid_label[rlevel]); |
| 516 | return l; |
| 517 | } |
| 518 | |
| 519 | static ssize_t lunid_show(struct device *dev, |
| 520 | struct device_attribute *attr, char *buf) |
| 521 | { |
| 522 | struct ctlr_info *h; |
| 523 | struct scsi_device *sdev; |
| 524 | struct hpsa_scsi_dev_t *hdev; |
| 525 | unsigned long flags; |
| 526 | unsigned char lunid[8]; |
| 527 | |
| 528 | sdev = to_scsi_device(dev); |
| 529 | h = sdev_to_hba(sdev); |
| 530 | spin_lock_irqsave(&h->lock, flags); |
| 531 | hdev = sdev->hostdata; |
| 532 | if (!hdev) { |
| 533 | spin_unlock_irqrestore(&h->lock, flags); |
| 534 | return -ENODEV; |
| 535 | } |
| 536 | memcpy(lunid, hdev->scsi3addr, sizeof(lunid)); |
| 537 | spin_unlock_irqrestore(&h->lock, flags); |
| 538 | return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", |
| 539 | lunid[0], lunid[1], lunid[2], lunid[3], |
| 540 | lunid[4], lunid[5], lunid[6], lunid[7]); |
| 541 | } |
| 542 | |
| 543 | static ssize_t unique_id_show(struct device *dev, |
| 544 | struct device_attribute *attr, char *buf) |
| 545 | { |
| 546 | struct ctlr_info *h; |
| 547 | struct scsi_device *sdev; |
| 548 | struct hpsa_scsi_dev_t *hdev; |
| 549 | unsigned long flags; |
| 550 | unsigned char sn[16]; |
| 551 | |
| 552 | sdev = to_scsi_device(dev); |
| 553 | h = sdev_to_hba(sdev); |
| 554 | spin_lock_irqsave(&h->lock, flags); |
| 555 | hdev = sdev->hostdata; |
| 556 | if (!hdev) { |
| 557 | spin_unlock_irqrestore(&h->lock, flags); |
| 558 | return -ENODEV; |
| 559 | } |
| 560 | memcpy(sn, hdev->device_id, sizeof(sn)); |
| 561 | spin_unlock_irqrestore(&h->lock, flags); |
| 562 | return snprintf(buf, 16 * 2 + 2, |
| 563 | "%02X%02X%02X%02X%02X%02X%02X%02X" |
| 564 | "%02X%02X%02X%02X%02X%02X%02X%02X\n", |
| 565 | sn[0], sn[1], sn[2], sn[3], |
| 566 | sn[4], sn[5], sn[6], sn[7], |
| 567 | sn[8], sn[9], sn[10], sn[11], |
| 568 | sn[12], sn[13], sn[14], sn[15]); |
| 569 | } |
| 570 | |
| 571 | static int hpsa_find_target_lun(struct ctlr_info *h, |
| 572 | unsigned char scsi3addr[], int bus, int *target, int *lun) |
| 573 | { |
| 574 | /* finds an unused bus, target, lun for a new physical device |
| 575 | * assumes h->devlock is held |
| 576 | */ |
| 577 | int i, found = 0; |
| 578 | DECLARE_BITMAP(lun_taken, HPSA_MAX_SCSI_DEVS_PER_HBA); |
| 579 | |
| 580 | memset(&lun_taken[0], 0, HPSA_MAX_SCSI_DEVS_PER_HBA >> 3); |
| 581 | |
| 582 | for (i = 0; i < h->ndevices; i++) { |
| 583 | if (h->dev[i]->bus == bus && h->dev[i]->target != -1) |
| 584 | set_bit(h->dev[i]->target, lun_taken); |
| 585 | } |
| 586 | |
| 587 | for (i = 0; i < HPSA_MAX_SCSI_DEVS_PER_HBA; i++) { |
| 588 | if (!test_bit(i, lun_taken)) { |
| 589 | /* *bus = 1; */ |
| 590 | *target = i; |
| 591 | *lun = 0; |
| 592 | found = 1; |
| 593 | break; |
| 594 | } |
| 595 | } |
| 596 | return !found; |
| 597 | } |
| 598 | |
| 599 | /* Add an entry into h->dev[] array. */ |
| 600 | static int hpsa_scsi_add_entry(struct ctlr_info *h, int hostno, |
| 601 | struct hpsa_scsi_dev_t *device, |
| 602 | struct hpsa_scsi_dev_t *added[], int *nadded) |
| 603 | { |
| 604 | /* assumes h->devlock is held */ |
| 605 | int n = h->ndevices; |
| 606 | int i; |
| 607 | unsigned char addr1[8], addr2[8]; |
| 608 | struct hpsa_scsi_dev_t *sd; |
| 609 | |
| 610 | if (n >= HPSA_MAX_SCSI_DEVS_PER_HBA) { |
| 611 | dev_err(&h->pdev->dev, "too many devices, some will be " |
| 612 | "inaccessible.\n"); |
| 613 | return -1; |
| 614 | } |
| 615 | |
| 616 | /* physical devices do not have lun or target assigned until now. */ |
| 617 | if (device->lun != -1) |
| 618 | /* Logical device, lun is already assigned. */ |
| 619 | goto lun_assigned; |
| 620 | |
| 621 | /* If this device a non-zero lun of a multi-lun device |
| 622 | * byte 4 of the 8-byte LUN addr will contain the logical |
| 623 | * unit no, zero otherise. |
| 624 | */ |
| 625 | if (device->scsi3addr[4] == 0) { |
| 626 | /* This is not a non-zero lun of a multi-lun device */ |
| 627 | if (hpsa_find_target_lun(h, device->scsi3addr, |
| 628 | device->bus, &device->target, &device->lun) != 0) |
| 629 | return -1; |
| 630 | goto lun_assigned; |
| 631 | } |
| 632 | |
| 633 | /* This is a non-zero lun of a multi-lun device. |
| 634 | * Search through our list and find the device which |
| 635 | * has the same 8 byte LUN address, excepting byte 4. |
| 636 | * Assign the same bus and target for this new LUN. |
| 637 | * Use the logical unit number from the firmware. |
| 638 | */ |
| 639 | memcpy(addr1, device->scsi3addr, 8); |
| 640 | addr1[4] = 0; |
| 641 | for (i = 0; i < n; i++) { |
| 642 | sd = h->dev[i]; |
| 643 | memcpy(addr2, sd->scsi3addr, 8); |
| 644 | addr2[4] = 0; |
| 645 | /* differ only in byte 4? */ |
| 646 | if (memcmp(addr1, addr2, 8) == 0) { |
| 647 | device->bus = sd->bus; |
| 648 | device->target = sd->target; |
| 649 | device->lun = device->scsi3addr[4]; |
| 650 | break; |
| 651 | } |
| 652 | } |
| 653 | if (device->lun == -1) { |
| 654 | dev_warn(&h->pdev->dev, "physical device with no LUN=0," |
| 655 | " suspect firmware bug or unsupported hardware " |
| 656 | "configuration.\n"); |
| 657 | return -1; |
| 658 | } |
| 659 | |
| 660 | lun_assigned: |
| 661 | |
| 662 | h->dev[n] = device; |
| 663 | h->ndevices++; |
| 664 | added[*nadded] = device; |
| 665 | (*nadded)++; |
| 666 | |
| 667 | /* initially, (before registering with scsi layer) we don't |
| 668 | * know our hostno and we don't want to print anything first |
| 669 | * time anyway (the scsi layer's inquiries will show that info) |
| 670 | */ |
| 671 | /* if (hostno != -1) */ |
| 672 | dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d added.\n", |
| 673 | scsi_device_type(device->devtype), hostno, |
| 674 | device->bus, device->target, device->lun); |
| 675 | return 0; |
| 676 | } |
| 677 | |
Stephen M. Cameron | 2a8ccf3 | 2010-02-04 08:43:41 -0600 | [diff] [blame] | 678 | /* Replace an entry from h->dev[] array. */ |
| 679 | static void hpsa_scsi_replace_entry(struct ctlr_info *h, int hostno, |
| 680 | int entry, struct hpsa_scsi_dev_t *new_entry, |
| 681 | struct hpsa_scsi_dev_t *added[], int *nadded, |
| 682 | struct hpsa_scsi_dev_t *removed[], int *nremoved) |
| 683 | { |
| 684 | /* assumes h->devlock is held */ |
| 685 | BUG_ON(entry < 0 || entry >= HPSA_MAX_SCSI_DEVS_PER_HBA); |
| 686 | removed[*nremoved] = h->dev[entry]; |
| 687 | (*nremoved)++; |
| 688 | h->dev[entry] = new_entry; |
| 689 | added[*nadded] = new_entry; |
| 690 | (*nadded)++; |
| 691 | dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d changed.\n", |
| 692 | scsi_device_type(new_entry->devtype), hostno, new_entry->bus, |
| 693 | new_entry->target, new_entry->lun); |
| 694 | } |
| 695 | |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 696 | /* Remove an entry from h->dev[] array. */ |
| 697 | static void hpsa_scsi_remove_entry(struct ctlr_info *h, int hostno, int entry, |
| 698 | struct hpsa_scsi_dev_t *removed[], int *nremoved) |
| 699 | { |
| 700 | /* assumes h->devlock is held */ |
| 701 | int i; |
| 702 | struct hpsa_scsi_dev_t *sd; |
| 703 | |
Stephen M. Cameron | b2ed4f7 | 2010-02-04 08:41:44 -0600 | [diff] [blame] | 704 | BUG_ON(entry < 0 || entry >= HPSA_MAX_SCSI_DEVS_PER_HBA); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 705 | |
| 706 | sd = h->dev[entry]; |
| 707 | removed[*nremoved] = h->dev[entry]; |
| 708 | (*nremoved)++; |
| 709 | |
| 710 | for (i = entry; i < h->ndevices-1; i++) |
| 711 | h->dev[i] = h->dev[i+1]; |
| 712 | h->ndevices--; |
| 713 | dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d removed.\n", |
| 714 | scsi_device_type(sd->devtype), hostno, sd->bus, sd->target, |
| 715 | sd->lun); |
| 716 | } |
| 717 | |
| 718 | #define SCSI3ADDR_EQ(a, b) ( \ |
| 719 | (a)[7] == (b)[7] && \ |
| 720 | (a)[6] == (b)[6] && \ |
| 721 | (a)[5] == (b)[5] && \ |
| 722 | (a)[4] == (b)[4] && \ |
| 723 | (a)[3] == (b)[3] && \ |
| 724 | (a)[2] == (b)[2] && \ |
| 725 | (a)[1] == (b)[1] && \ |
| 726 | (a)[0] == (b)[0]) |
| 727 | |
| 728 | static void fixup_botched_add(struct ctlr_info *h, |
| 729 | struct hpsa_scsi_dev_t *added) |
| 730 | { |
| 731 | /* called when scsi_add_device fails in order to re-adjust |
| 732 | * h->dev[] to match the mid layer's view. |
| 733 | */ |
| 734 | unsigned long flags; |
| 735 | int i, j; |
| 736 | |
| 737 | spin_lock_irqsave(&h->lock, flags); |
| 738 | for (i = 0; i < h->ndevices; i++) { |
| 739 | if (h->dev[i] == added) { |
| 740 | for (j = i; j < h->ndevices-1; j++) |
| 741 | h->dev[j] = h->dev[j+1]; |
| 742 | h->ndevices--; |
| 743 | break; |
| 744 | } |
| 745 | } |
| 746 | spin_unlock_irqrestore(&h->lock, flags); |
| 747 | kfree(added); |
| 748 | } |
| 749 | |
| 750 | static inline int device_is_the_same(struct hpsa_scsi_dev_t *dev1, |
| 751 | struct hpsa_scsi_dev_t *dev2) |
| 752 | { |
| 753 | if ((is_logical_dev_addr_mode(dev1->scsi3addr) || |
| 754 | (dev1->lun != -1 && dev2->lun != -1)) && |
| 755 | dev1->devtype != 0x0C) |
| 756 | return (memcmp(dev1, dev2, sizeof(*dev1)) == 0); |
| 757 | |
| 758 | /* we compare everything except lun and target as these |
| 759 | * are not yet assigned. Compare parts likely |
| 760 | * to differ first |
| 761 | */ |
| 762 | if (memcmp(dev1->scsi3addr, dev2->scsi3addr, |
| 763 | sizeof(dev1->scsi3addr)) != 0) |
| 764 | return 0; |
| 765 | if (memcmp(dev1->device_id, dev2->device_id, |
| 766 | sizeof(dev1->device_id)) != 0) |
| 767 | return 0; |
| 768 | if (memcmp(dev1->model, dev2->model, sizeof(dev1->model)) != 0) |
| 769 | return 0; |
| 770 | if (memcmp(dev1->vendor, dev2->vendor, sizeof(dev1->vendor)) != 0) |
| 771 | return 0; |
| 772 | if (memcmp(dev1->revision, dev2->revision, sizeof(dev1->revision)) != 0) |
| 773 | return 0; |
| 774 | if (dev1->devtype != dev2->devtype) |
| 775 | return 0; |
| 776 | if (dev1->raid_level != dev2->raid_level) |
| 777 | return 0; |
| 778 | if (dev1->bus != dev2->bus) |
| 779 | return 0; |
| 780 | return 1; |
| 781 | } |
| 782 | |
| 783 | /* Find needle in haystack. If exact match found, return DEVICE_SAME, |
| 784 | * and return needle location in *index. If scsi3addr matches, but not |
| 785 | * vendor, model, serial num, etc. return DEVICE_CHANGED, and return needle |
| 786 | * location in *index. If needle not found, return DEVICE_NOT_FOUND. |
| 787 | */ |
| 788 | static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t *needle, |
| 789 | struct hpsa_scsi_dev_t *haystack[], int haystack_size, |
| 790 | int *index) |
| 791 | { |
| 792 | int i; |
| 793 | #define DEVICE_NOT_FOUND 0 |
| 794 | #define DEVICE_CHANGED 1 |
| 795 | #define DEVICE_SAME 2 |
| 796 | for (i = 0; i < haystack_size; i++) { |
Stephen M. Cameron | 2323104 | 2010-02-04 08:43:36 -0600 | [diff] [blame] | 797 | if (haystack[i] == NULL) /* previously removed. */ |
| 798 | continue; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 799 | if (SCSI3ADDR_EQ(needle->scsi3addr, haystack[i]->scsi3addr)) { |
| 800 | *index = i; |
| 801 | if (device_is_the_same(needle, haystack[i])) |
| 802 | return DEVICE_SAME; |
| 803 | else |
| 804 | return DEVICE_CHANGED; |
| 805 | } |
| 806 | } |
| 807 | *index = -1; |
| 808 | return DEVICE_NOT_FOUND; |
| 809 | } |
| 810 | |
Stephen M. Cameron | 4967bd3 | 2010-02-04 08:41:49 -0600 | [diff] [blame] | 811 | static void adjust_hpsa_scsi_table(struct ctlr_info *h, int hostno, |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 812 | struct hpsa_scsi_dev_t *sd[], int nsds) |
| 813 | { |
| 814 | /* sd contains scsi3 addresses and devtypes, and inquiry |
| 815 | * data. This function takes what's in sd to be the current |
| 816 | * reality and updates h->dev[] to reflect that reality. |
| 817 | */ |
| 818 | int i, entry, device_change, changes = 0; |
| 819 | struct hpsa_scsi_dev_t *csd; |
| 820 | unsigned long flags; |
| 821 | struct hpsa_scsi_dev_t **added, **removed; |
| 822 | int nadded, nremoved; |
| 823 | struct Scsi_Host *sh = NULL; |
| 824 | |
| 825 | added = kzalloc(sizeof(*added) * HPSA_MAX_SCSI_DEVS_PER_HBA, |
| 826 | GFP_KERNEL); |
| 827 | removed = kzalloc(sizeof(*removed) * HPSA_MAX_SCSI_DEVS_PER_HBA, |
| 828 | GFP_KERNEL); |
| 829 | |
| 830 | if (!added || !removed) { |
| 831 | dev_warn(&h->pdev->dev, "out of memory in " |
| 832 | "adjust_hpsa_scsi_table\n"); |
| 833 | goto free_and_out; |
| 834 | } |
| 835 | |
| 836 | spin_lock_irqsave(&h->devlock, flags); |
| 837 | |
| 838 | /* find any devices in h->dev[] that are not in |
| 839 | * sd[] and remove them from h->dev[], and for any |
| 840 | * devices which have changed, remove the old device |
| 841 | * info and add the new device info. |
| 842 | */ |
| 843 | i = 0; |
| 844 | nremoved = 0; |
| 845 | nadded = 0; |
| 846 | while (i < h->ndevices) { |
| 847 | csd = h->dev[i]; |
| 848 | device_change = hpsa_scsi_find_entry(csd, sd, nsds, &entry); |
| 849 | if (device_change == DEVICE_NOT_FOUND) { |
| 850 | changes++; |
| 851 | hpsa_scsi_remove_entry(h, hostno, i, |
| 852 | removed, &nremoved); |
| 853 | continue; /* remove ^^^, hence i not incremented */ |
| 854 | } else if (device_change == DEVICE_CHANGED) { |
| 855 | changes++; |
Stephen M. Cameron | 2a8ccf3 | 2010-02-04 08:43:41 -0600 | [diff] [blame] | 856 | hpsa_scsi_replace_entry(h, hostno, i, sd[entry], |
| 857 | added, &nadded, removed, &nremoved); |
Stephen M. Cameron | c7f172d | 2010-02-04 08:43:31 -0600 | [diff] [blame] | 858 | /* Set it to NULL to prevent it from being freed |
| 859 | * at the bottom of hpsa_update_scsi_devices() |
| 860 | */ |
| 861 | sd[entry] = NULL; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 862 | } |
| 863 | i++; |
| 864 | } |
| 865 | |
| 866 | /* Now, make sure every device listed in sd[] is also |
| 867 | * listed in h->dev[], adding them if they aren't found |
| 868 | */ |
| 869 | |
| 870 | for (i = 0; i < nsds; i++) { |
| 871 | if (!sd[i]) /* if already added above. */ |
| 872 | continue; |
| 873 | device_change = hpsa_scsi_find_entry(sd[i], h->dev, |
| 874 | h->ndevices, &entry); |
| 875 | if (device_change == DEVICE_NOT_FOUND) { |
| 876 | changes++; |
| 877 | if (hpsa_scsi_add_entry(h, hostno, sd[i], |
| 878 | added, &nadded) != 0) |
| 879 | break; |
| 880 | sd[i] = NULL; /* prevent from being freed later. */ |
| 881 | } else if (device_change == DEVICE_CHANGED) { |
| 882 | /* should never happen... */ |
| 883 | changes++; |
| 884 | dev_warn(&h->pdev->dev, |
| 885 | "device unexpectedly changed.\n"); |
| 886 | /* but if it does happen, we just ignore that device */ |
| 887 | } |
| 888 | } |
| 889 | spin_unlock_irqrestore(&h->devlock, flags); |
| 890 | |
| 891 | /* Don't notify scsi mid layer of any changes the first time through |
| 892 | * (or if there are no changes) scsi_scan_host will do it later the |
| 893 | * first time through. |
| 894 | */ |
| 895 | if (hostno == -1 || !changes) |
| 896 | goto free_and_out; |
| 897 | |
| 898 | sh = h->scsi_host; |
| 899 | /* Notify scsi mid layer of any removed devices */ |
| 900 | for (i = 0; i < nremoved; i++) { |
| 901 | struct scsi_device *sdev = |
| 902 | scsi_device_lookup(sh, removed[i]->bus, |
| 903 | removed[i]->target, removed[i]->lun); |
| 904 | if (sdev != NULL) { |
| 905 | scsi_remove_device(sdev); |
| 906 | scsi_device_put(sdev); |
| 907 | } else { |
| 908 | /* We don't expect to get here. |
| 909 | * future cmds to this device will get selection |
| 910 | * timeout as if the device was gone. |
| 911 | */ |
| 912 | dev_warn(&h->pdev->dev, "didn't find c%db%dt%dl%d " |
| 913 | " for removal.", hostno, removed[i]->bus, |
| 914 | removed[i]->target, removed[i]->lun); |
| 915 | } |
| 916 | kfree(removed[i]); |
| 917 | removed[i] = NULL; |
| 918 | } |
| 919 | |
| 920 | /* Notify scsi mid layer of any added devices */ |
| 921 | for (i = 0; i < nadded; i++) { |
| 922 | if (scsi_add_device(sh, added[i]->bus, |
| 923 | added[i]->target, added[i]->lun) == 0) |
| 924 | continue; |
| 925 | dev_warn(&h->pdev->dev, "scsi_add_device c%db%dt%dl%d failed, " |
| 926 | "device not added.\n", hostno, added[i]->bus, |
| 927 | added[i]->target, added[i]->lun); |
| 928 | /* now we have to remove it from h->dev, |
| 929 | * since it didn't get added to scsi mid layer |
| 930 | */ |
| 931 | fixup_botched_add(h, added[i]); |
| 932 | } |
| 933 | |
| 934 | free_and_out: |
| 935 | kfree(added); |
| 936 | kfree(removed); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 937 | } |
| 938 | |
| 939 | /* |
| 940 | * Lookup bus/target/lun and retrun corresponding struct hpsa_scsi_dev_t * |
| 941 | * Assume's h->devlock is held. |
| 942 | */ |
| 943 | static struct hpsa_scsi_dev_t *lookup_hpsa_scsi_dev(struct ctlr_info *h, |
| 944 | int bus, int target, int lun) |
| 945 | { |
| 946 | int i; |
| 947 | struct hpsa_scsi_dev_t *sd; |
| 948 | |
| 949 | for (i = 0; i < h->ndevices; i++) { |
| 950 | sd = h->dev[i]; |
| 951 | if (sd->bus == bus && sd->target == target && sd->lun == lun) |
| 952 | return sd; |
| 953 | } |
| 954 | return NULL; |
| 955 | } |
| 956 | |
| 957 | /* link sdev->hostdata to our per-device structure. */ |
| 958 | static int hpsa_slave_alloc(struct scsi_device *sdev) |
| 959 | { |
| 960 | struct hpsa_scsi_dev_t *sd; |
| 961 | unsigned long flags; |
| 962 | struct ctlr_info *h; |
| 963 | |
| 964 | h = sdev_to_hba(sdev); |
| 965 | spin_lock_irqsave(&h->devlock, flags); |
| 966 | sd = lookup_hpsa_scsi_dev(h, sdev_channel(sdev), |
| 967 | sdev_id(sdev), sdev->lun); |
| 968 | if (sd != NULL) |
| 969 | sdev->hostdata = sd; |
| 970 | spin_unlock_irqrestore(&h->devlock, flags); |
| 971 | return 0; |
| 972 | } |
| 973 | |
| 974 | static void hpsa_slave_destroy(struct scsi_device *sdev) |
| 975 | { |
Stephen M. Cameron | bcc4425 | 2010-02-04 08:41:54 -0600 | [diff] [blame] | 976 | /* nothing to do. */ |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 977 | } |
| 978 | |
| 979 | static void hpsa_scsi_setup(struct ctlr_info *h) |
| 980 | { |
| 981 | h->ndevices = 0; |
| 982 | h->scsi_host = NULL; |
| 983 | spin_lock_init(&h->devlock); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 984 | } |
| 985 | |
| 986 | static void complete_scsi_command(struct CommandList *cp, |
Stephen M. Cameron | 01a02ff | 2010-02-04 08:41:33 -0600 | [diff] [blame] | 987 | int timeout, u32 tag) |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 988 | { |
| 989 | struct scsi_cmnd *cmd; |
| 990 | struct ctlr_info *h; |
| 991 | struct ErrorInfo *ei; |
| 992 | |
| 993 | unsigned char sense_key; |
| 994 | unsigned char asc; /* additional sense code */ |
| 995 | unsigned char ascq; /* additional sense code qualifier */ |
| 996 | |
| 997 | ei = cp->err_info; |
| 998 | cmd = (struct scsi_cmnd *) cp->scsi_cmd; |
| 999 | h = cp->h; |
| 1000 | |
| 1001 | scsi_dma_unmap(cmd); /* undo the DMA mappings */ |
| 1002 | |
| 1003 | cmd->result = (DID_OK << 16); /* host byte */ |
| 1004 | cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */ |
| 1005 | cmd->result |= (ei->ScsiStatus << 1); |
| 1006 | |
| 1007 | /* copy the sense data whether we need to or not. */ |
| 1008 | memcpy(cmd->sense_buffer, ei->SenseInfo, |
| 1009 | ei->SenseLen > SCSI_SENSE_BUFFERSIZE ? |
| 1010 | SCSI_SENSE_BUFFERSIZE : |
| 1011 | ei->SenseLen); |
| 1012 | scsi_set_resid(cmd, ei->ResidualCnt); |
| 1013 | |
| 1014 | if (ei->CommandStatus == 0) { |
| 1015 | cmd->scsi_done(cmd); |
| 1016 | cmd_free(h, cp); |
| 1017 | return; |
| 1018 | } |
| 1019 | |
| 1020 | /* an error has occurred */ |
| 1021 | switch (ei->CommandStatus) { |
| 1022 | |
| 1023 | case CMD_TARGET_STATUS: |
| 1024 | if (ei->ScsiStatus) { |
| 1025 | /* Get sense key */ |
| 1026 | sense_key = 0xf & ei->SenseInfo[2]; |
| 1027 | /* Get additional sense code */ |
| 1028 | asc = ei->SenseInfo[12]; |
| 1029 | /* Get addition sense code qualifier */ |
| 1030 | ascq = ei->SenseInfo[13]; |
| 1031 | } |
| 1032 | |
| 1033 | if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION) { |
| 1034 | if (check_for_unit_attention(h, cp)) { |
| 1035 | cmd->result = DID_SOFT_ERROR << 16; |
| 1036 | break; |
| 1037 | } |
| 1038 | if (sense_key == ILLEGAL_REQUEST) { |
| 1039 | /* |
| 1040 | * SCSI REPORT_LUNS is commonly unsupported on |
| 1041 | * Smart Array. Suppress noisy complaint. |
| 1042 | */ |
| 1043 | if (cp->Request.CDB[0] == REPORT_LUNS) |
| 1044 | break; |
| 1045 | |
| 1046 | /* If ASC/ASCQ indicate Logical Unit |
| 1047 | * Not Supported condition, |
| 1048 | */ |
| 1049 | if ((asc == 0x25) && (ascq == 0x0)) { |
| 1050 | dev_warn(&h->pdev->dev, "cp %p " |
| 1051 | "has check condition\n", cp); |
| 1052 | break; |
| 1053 | } |
| 1054 | } |
| 1055 | |
| 1056 | if (sense_key == NOT_READY) { |
| 1057 | /* If Sense is Not Ready, Logical Unit |
| 1058 | * Not ready, Manual Intervention |
| 1059 | * required |
| 1060 | */ |
| 1061 | if ((asc == 0x04) && (ascq == 0x03)) { |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1062 | dev_warn(&h->pdev->dev, "cp %p " |
| 1063 | "has check condition: unit " |
| 1064 | "not ready, manual " |
| 1065 | "intervention required\n", cp); |
| 1066 | break; |
| 1067 | } |
| 1068 | } |
Matt Gates | 1d3b360 | 2010-02-04 08:43:00 -0600 | [diff] [blame] | 1069 | if (sense_key == ABORTED_COMMAND) { |
| 1070 | /* Aborted command is retryable */ |
| 1071 | dev_warn(&h->pdev->dev, "cp %p " |
| 1072 | "has check condition: aborted command: " |
| 1073 | "ASC: 0x%x, ASCQ: 0x%x\n", |
| 1074 | cp, asc, ascq); |
| 1075 | cmd->result = DID_SOFT_ERROR << 16; |
| 1076 | break; |
| 1077 | } |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1078 | /* Must be some other type of check condition */ |
| 1079 | dev_warn(&h->pdev->dev, "cp %p has check condition: " |
| 1080 | "unknown type: " |
| 1081 | "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, " |
| 1082 | "Returning result: 0x%x, " |
| 1083 | "cmd=[%02x %02x %02x %02x %02x " |
Mike Miller | 807be73 | 2010-02-04 08:43:26 -0600 | [diff] [blame] | 1084 | "%02x %02x %02x %02x %02x %02x " |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1085 | "%02x %02x %02x %02x %02x]\n", |
| 1086 | cp, sense_key, asc, ascq, |
| 1087 | cmd->result, |
| 1088 | cmd->cmnd[0], cmd->cmnd[1], |
| 1089 | cmd->cmnd[2], cmd->cmnd[3], |
| 1090 | cmd->cmnd[4], cmd->cmnd[5], |
| 1091 | cmd->cmnd[6], cmd->cmnd[7], |
Mike Miller | 807be73 | 2010-02-04 08:43:26 -0600 | [diff] [blame] | 1092 | cmd->cmnd[8], cmd->cmnd[9], |
| 1093 | cmd->cmnd[10], cmd->cmnd[11], |
| 1094 | cmd->cmnd[12], cmd->cmnd[13], |
| 1095 | cmd->cmnd[14], cmd->cmnd[15]); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1096 | break; |
| 1097 | } |
| 1098 | |
| 1099 | |
| 1100 | /* Problem was not a check condition |
| 1101 | * Pass it up to the upper layers... |
| 1102 | */ |
| 1103 | if (ei->ScsiStatus) { |
| 1104 | dev_warn(&h->pdev->dev, "cp %p has status 0x%x " |
| 1105 | "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, " |
| 1106 | "Returning result: 0x%x\n", |
| 1107 | cp, ei->ScsiStatus, |
| 1108 | sense_key, asc, ascq, |
| 1109 | cmd->result); |
| 1110 | } else { /* scsi status is zero??? How??? */ |
| 1111 | dev_warn(&h->pdev->dev, "cp %p SCSI status was 0. " |
| 1112 | "Returning no connection.\n", cp), |
| 1113 | |
| 1114 | /* Ordinarily, this case should never happen, |
| 1115 | * but there is a bug in some released firmware |
| 1116 | * revisions that allows it to happen if, for |
| 1117 | * example, a 4100 backplane loses power and |
| 1118 | * the tape drive is in it. We assume that |
| 1119 | * it's a fatal error of some kind because we |
| 1120 | * can't show that it wasn't. We will make it |
| 1121 | * look like selection timeout since that is |
| 1122 | * the most common reason for this to occur, |
| 1123 | * and it's severe enough. |
| 1124 | */ |
| 1125 | |
| 1126 | cmd->result = DID_NO_CONNECT << 16; |
| 1127 | } |
| 1128 | break; |
| 1129 | |
| 1130 | case CMD_DATA_UNDERRUN: /* let mid layer handle it. */ |
| 1131 | break; |
| 1132 | case CMD_DATA_OVERRUN: |
| 1133 | dev_warn(&h->pdev->dev, "cp %p has" |
| 1134 | " completed with data overrun " |
| 1135 | "reported\n", cp); |
| 1136 | break; |
| 1137 | case CMD_INVALID: { |
| 1138 | /* print_bytes(cp, sizeof(*cp), 1, 0); |
| 1139 | print_cmd(cp); */ |
| 1140 | /* We get CMD_INVALID if you address a non-existent device |
| 1141 | * instead of a selection timeout (no response). You will |
| 1142 | * see this if you yank out a drive, then try to access it. |
| 1143 | * This is kind of a shame because it means that any other |
| 1144 | * CMD_INVALID (e.g. driver bug) will get interpreted as a |
| 1145 | * missing target. */ |
| 1146 | cmd->result = DID_NO_CONNECT << 16; |
| 1147 | } |
| 1148 | break; |
| 1149 | case CMD_PROTOCOL_ERR: |
| 1150 | dev_warn(&h->pdev->dev, "cp %p has " |
| 1151 | "protocol error \n", cp); |
| 1152 | break; |
| 1153 | case CMD_HARDWARE_ERR: |
| 1154 | cmd->result = DID_ERROR << 16; |
| 1155 | dev_warn(&h->pdev->dev, "cp %p had hardware error\n", cp); |
| 1156 | break; |
| 1157 | case CMD_CONNECTION_LOST: |
| 1158 | cmd->result = DID_ERROR << 16; |
| 1159 | dev_warn(&h->pdev->dev, "cp %p had connection lost\n", cp); |
| 1160 | break; |
| 1161 | case CMD_ABORTED: |
| 1162 | cmd->result = DID_ABORT << 16; |
| 1163 | dev_warn(&h->pdev->dev, "cp %p was aborted with status 0x%x\n", |
| 1164 | cp, ei->ScsiStatus); |
| 1165 | break; |
| 1166 | case CMD_ABORT_FAILED: |
| 1167 | cmd->result = DID_ERROR << 16; |
| 1168 | dev_warn(&h->pdev->dev, "cp %p reports abort failed\n", cp); |
| 1169 | break; |
| 1170 | case CMD_UNSOLICITED_ABORT: |
Matt Gates | 5f0325a | 2010-02-04 08:42:55 -0600 | [diff] [blame] | 1171 | cmd->result = DID_RESET << 16; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1172 | dev_warn(&h->pdev->dev, "cp %p aborted do to an unsolicited " |
| 1173 | "abort\n", cp); |
| 1174 | break; |
| 1175 | case CMD_TIMEOUT: |
| 1176 | cmd->result = DID_TIME_OUT << 16; |
| 1177 | dev_warn(&h->pdev->dev, "cp %p timedout\n", cp); |
| 1178 | break; |
| 1179 | default: |
| 1180 | cmd->result = DID_ERROR << 16; |
| 1181 | dev_warn(&h->pdev->dev, "cp %p returned unknown status %x\n", |
| 1182 | cp, ei->CommandStatus); |
| 1183 | } |
| 1184 | cmd->scsi_done(cmd); |
| 1185 | cmd_free(h, cp); |
| 1186 | } |
| 1187 | |
| 1188 | static int hpsa_scsi_detect(struct ctlr_info *h) |
| 1189 | { |
| 1190 | struct Scsi_Host *sh; |
| 1191 | int error; |
| 1192 | |
| 1193 | sh = scsi_host_alloc(&hpsa_driver_template, sizeof(h)); |
| 1194 | if (sh == NULL) |
| 1195 | goto fail; |
| 1196 | |
| 1197 | sh->io_port = 0; |
| 1198 | sh->n_io_port = 0; |
| 1199 | sh->this_id = -1; |
| 1200 | sh->max_channel = 3; |
| 1201 | sh->max_cmd_len = MAX_COMMAND_SIZE; |
| 1202 | sh->max_lun = HPSA_MAX_LUN; |
| 1203 | sh->max_id = HPSA_MAX_LUN; |
Don Brace | 303932f | 2010-02-04 08:42:40 -0600 | [diff] [blame] | 1204 | sh->can_queue = h->nr_cmds; |
| 1205 | sh->cmd_per_lun = h->nr_cmds; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1206 | h->scsi_host = sh; |
| 1207 | sh->hostdata[0] = (unsigned long) h; |
Don Brace | 303932f | 2010-02-04 08:42:40 -0600 | [diff] [blame] | 1208 | sh->irq = h->intr[PERF_MODE_INT]; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1209 | sh->unique_id = sh->irq; |
| 1210 | error = scsi_add_host(sh, &h->pdev->dev); |
| 1211 | if (error) |
| 1212 | goto fail_host_put; |
| 1213 | scsi_scan_host(sh); |
| 1214 | return 0; |
| 1215 | |
| 1216 | fail_host_put: |
| 1217 | dev_err(&h->pdev->dev, "hpsa_scsi_detect: scsi_add_host" |
| 1218 | " failed for controller %d\n", h->ctlr); |
| 1219 | scsi_host_put(sh); |
Stephen M. Cameron | ecd9aad | 2010-02-04 08:41:59 -0600 | [diff] [blame] | 1220 | return error; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1221 | fail: |
| 1222 | dev_err(&h->pdev->dev, "hpsa_scsi_detect: scsi_host_alloc" |
| 1223 | " failed for controller %d\n", h->ctlr); |
Stephen M. Cameron | ecd9aad | 2010-02-04 08:41:59 -0600 | [diff] [blame] | 1224 | return -ENOMEM; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1225 | } |
| 1226 | |
| 1227 | static void hpsa_pci_unmap(struct pci_dev *pdev, |
| 1228 | struct CommandList *c, int sg_used, int data_direction) |
| 1229 | { |
| 1230 | int i; |
| 1231 | union u64bit addr64; |
| 1232 | |
| 1233 | for (i = 0; i < sg_used; i++) { |
| 1234 | addr64.val32.lower = c->SG[i].Addr.lower; |
| 1235 | addr64.val32.upper = c->SG[i].Addr.upper; |
| 1236 | pci_unmap_single(pdev, (dma_addr_t) addr64.val, c->SG[i].Len, |
| 1237 | data_direction); |
| 1238 | } |
| 1239 | } |
| 1240 | |
| 1241 | static void hpsa_map_one(struct pci_dev *pdev, |
| 1242 | struct CommandList *cp, |
| 1243 | unsigned char *buf, |
| 1244 | size_t buflen, |
| 1245 | int data_direction) |
| 1246 | { |
Stephen M. Cameron | 01a02ff | 2010-02-04 08:41:33 -0600 | [diff] [blame] | 1247 | u64 addr64; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1248 | |
| 1249 | if (buflen == 0 || data_direction == PCI_DMA_NONE) { |
| 1250 | cp->Header.SGList = 0; |
| 1251 | cp->Header.SGTotal = 0; |
| 1252 | return; |
| 1253 | } |
| 1254 | |
Stephen M. Cameron | 01a02ff | 2010-02-04 08:41:33 -0600 | [diff] [blame] | 1255 | addr64 = (u64) pci_map_single(pdev, buf, buflen, data_direction); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1256 | cp->SG[0].Addr.lower = |
Stephen M. Cameron | 01a02ff | 2010-02-04 08:41:33 -0600 | [diff] [blame] | 1257 | (u32) (addr64 & (u64) 0x00000000FFFFFFFF); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1258 | cp->SG[0].Addr.upper = |
Stephen M. Cameron | 01a02ff | 2010-02-04 08:41:33 -0600 | [diff] [blame] | 1259 | (u32) ((addr64 >> 32) & (u64) 0x00000000FFFFFFFF); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1260 | cp->SG[0].Len = buflen; |
Stephen M. Cameron | 01a02ff | 2010-02-04 08:41:33 -0600 | [diff] [blame] | 1261 | cp->Header.SGList = (u8) 1; /* no. SGs contig in this cmd */ |
| 1262 | cp->Header.SGTotal = (u16) 1; /* total sgs in this cmd list */ |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1263 | } |
| 1264 | |
| 1265 | static inline void hpsa_scsi_do_simple_cmd_core(struct ctlr_info *h, |
| 1266 | struct CommandList *c) |
| 1267 | { |
| 1268 | DECLARE_COMPLETION_ONSTACK(wait); |
| 1269 | |
| 1270 | c->waiting = &wait; |
| 1271 | enqueue_cmd_and_start_io(h, c); |
| 1272 | wait_for_completion(&wait); |
| 1273 | } |
| 1274 | |
| 1275 | static void hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info *h, |
| 1276 | struct CommandList *c, int data_direction) |
| 1277 | { |
| 1278 | int retry_count = 0; |
| 1279 | |
| 1280 | do { |
| 1281 | memset(c->err_info, 0, sizeof(c->err_info)); |
| 1282 | hpsa_scsi_do_simple_cmd_core(h, c); |
| 1283 | retry_count++; |
| 1284 | } while (check_for_unit_attention(h, c) && retry_count <= 3); |
| 1285 | hpsa_pci_unmap(h->pdev, c, 1, data_direction); |
| 1286 | } |
| 1287 | |
| 1288 | static void hpsa_scsi_interpret_error(struct CommandList *cp) |
| 1289 | { |
| 1290 | struct ErrorInfo *ei; |
| 1291 | struct device *d = &cp->h->pdev->dev; |
| 1292 | |
| 1293 | ei = cp->err_info; |
| 1294 | switch (ei->CommandStatus) { |
| 1295 | case CMD_TARGET_STATUS: |
| 1296 | dev_warn(d, "cmd %p has completed with errors\n", cp); |
| 1297 | dev_warn(d, "cmd %p has SCSI Status = %x\n", cp, |
| 1298 | ei->ScsiStatus); |
| 1299 | if (ei->ScsiStatus == 0) |
| 1300 | dev_warn(d, "SCSI status is abnormally zero. " |
| 1301 | "(probably indicates selection timeout " |
| 1302 | "reported incorrectly due to a known " |
| 1303 | "firmware bug, circa July, 2001.)\n"); |
| 1304 | break; |
| 1305 | case CMD_DATA_UNDERRUN: /* let mid layer handle it. */ |
| 1306 | dev_info(d, "UNDERRUN\n"); |
| 1307 | break; |
| 1308 | case CMD_DATA_OVERRUN: |
| 1309 | dev_warn(d, "cp %p has completed with data overrun\n", cp); |
| 1310 | break; |
| 1311 | case CMD_INVALID: { |
| 1312 | /* controller unfortunately reports SCSI passthru's |
| 1313 | * to non-existent targets as invalid commands. |
| 1314 | */ |
| 1315 | dev_warn(d, "cp %p is reported invalid (probably means " |
| 1316 | "target device no longer present)\n", cp); |
| 1317 | /* print_bytes((unsigned char *) cp, sizeof(*cp), 1, 0); |
| 1318 | print_cmd(cp); */ |
| 1319 | } |
| 1320 | break; |
| 1321 | case CMD_PROTOCOL_ERR: |
| 1322 | dev_warn(d, "cp %p has protocol error \n", cp); |
| 1323 | break; |
| 1324 | case CMD_HARDWARE_ERR: |
| 1325 | /* cmd->result = DID_ERROR << 16; */ |
| 1326 | dev_warn(d, "cp %p had hardware error\n", cp); |
| 1327 | break; |
| 1328 | case CMD_CONNECTION_LOST: |
| 1329 | dev_warn(d, "cp %p had connection lost\n", cp); |
| 1330 | break; |
| 1331 | case CMD_ABORTED: |
| 1332 | dev_warn(d, "cp %p was aborted\n", cp); |
| 1333 | break; |
| 1334 | case CMD_ABORT_FAILED: |
| 1335 | dev_warn(d, "cp %p reports abort failed\n", cp); |
| 1336 | break; |
| 1337 | case CMD_UNSOLICITED_ABORT: |
| 1338 | dev_warn(d, "cp %p aborted due to an unsolicited abort\n", cp); |
| 1339 | break; |
| 1340 | case CMD_TIMEOUT: |
| 1341 | dev_warn(d, "cp %p timed out\n", cp); |
| 1342 | break; |
| 1343 | default: |
| 1344 | dev_warn(d, "cp %p returned unknown status %x\n", cp, |
| 1345 | ei->CommandStatus); |
| 1346 | } |
| 1347 | } |
| 1348 | |
| 1349 | static int hpsa_scsi_do_inquiry(struct ctlr_info *h, unsigned char *scsi3addr, |
| 1350 | unsigned char page, unsigned char *buf, |
| 1351 | unsigned char bufsize) |
| 1352 | { |
| 1353 | int rc = IO_OK; |
| 1354 | struct CommandList *c; |
| 1355 | struct ErrorInfo *ei; |
| 1356 | |
| 1357 | c = cmd_special_alloc(h); |
| 1358 | |
| 1359 | if (c == NULL) { /* trouble... */ |
| 1360 | dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n"); |
Stephen M. Cameron | ecd9aad | 2010-02-04 08:41:59 -0600 | [diff] [blame] | 1361 | return -ENOMEM; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1362 | } |
| 1363 | |
| 1364 | fill_cmd(c, HPSA_INQUIRY, h, buf, bufsize, page, scsi3addr, TYPE_CMD); |
| 1365 | hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE); |
| 1366 | ei = c->err_info; |
| 1367 | if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { |
| 1368 | hpsa_scsi_interpret_error(c); |
| 1369 | rc = -1; |
| 1370 | } |
| 1371 | cmd_special_free(h, c); |
| 1372 | return rc; |
| 1373 | } |
| 1374 | |
| 1375 | static int hpsa_send_reset(struct ctlr_info *h, unsigned char *scsi3addr) |
| 1376 | { |
| 1377 | int rc = IO_OK; |
| 1378 | struct CommandList *c; |
| 1379 | struct ErrorInfo *ei; |
| 1380 | |
| 1381 | c = cmd_special_alloc(h); |
| 1382 | |
| 1383 | if (c == NULL) { /* trouble... */ |
| 1384 | dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n"); |
| 1385 | return -1; |
| 1386 | } |
| 1387 | |
| 1388 | fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0, scsi3addr, TYPE_MSG); |
| 1389 | hpsa_scsi_do_simple_cmd_core(h, c); |
| 1390 | /* no unmap needed here because no data xfer. */ |
| 1391 | |
| 1392 | ei = c->err_info; |
| 1393 | if (ei->CommandStatus != 0) { |
| 1394 | hpsa_scsi_interpret_error(c); |
| 1395 | rc = -1; |
| 1396 | } |
| 1397 | cmd_special_free(h, c); |
| 1398 | return rc; |
| 1399 | } |
| 1400 | |
| 1401 | static void hpsa_get_raid_level(struct ctlr_info *h, |
| 1402 | unsigned char *scsi3addr, unsigned char *raid_level) |
| 1403 | { |
| 1404 | int rc; |
| 1405 | unsigned char *buf; |
| 1406 | |
| 1407 | *raid_level = RAID_UNKNOWN; |
| 1408 | buf = kzalloc(64, GFP_KERNEL); |
| 1409 | if (!buf) |
| 1410 | return; |
| 1411 | rc = hpsa_scsi_do_inquiry(h, scsi3addr, 0xC1, buf, 64); |
| 1412 | if (rc == 0) |
| 1413 | *raid_level = buf[8]; |
| 1414 | if (*raid_level > RAID_UNKNOWN) |
| 1415 | *raid_level = RAID_UNKNOWN; |
| 1416 | kfree(buf); |
| 1417 | return; |
| 1418 | } |
| 1419 | |
| 1420 | /* Get the device id from inquiry page 0x83 */ |
| 1421 | static int hpsa_get_device_id(struct ctlr_info *h, unsigned char *scsi3addr, |
| 1422 | unsigned char *device_id, int buflen) |
| 1423 | { |
| 1424 | int rc; |
| 1425 | unsigned char *buf; |
| 1426 | |
| 1427 | if (buflen > 16) |
| 1428 | buflen = 16; |
| 1429 | buf = kzalloc(64, GFP_KERNEL); |
| 1430 | if (!buf) |
| 1431 | return -1; |
| 1432 | rc = hpsa_scsi_do_inquiry(h, scsi3addr, 0x83, buf, 64); |
| 1433 | if (rc == 0) |
| 1434 | memcpy(device_id, &buf[8], buflen); |
| 1435 | kfree(buf); |
| 1436 | return rc != 0; |
| 1437 | } |
| 1438 | |
| 1439 | static int hpsa_scsi_do_report_luns(struct ctlr_info *h, int logical, |
| 1440 | struct ReportLUNdata *buf, int bufsize, |
| 1441 | int extended_response) |
| 1442 | { |
| 1443 | int rc = IO_OK; |
| 1444 | struct CommandList *c; |
| 1445 | unsigned char scsi3addr[8]; |
| 1446 | struct ErrorInfo *ei; |
| 1447 | |
| 1448 | c = cmd_special_alloc(h); |
| 1449 | if (c == NULL) { /* trouble... */ |
| 1450 | dev_err(&h->pdev->dev, "cmd_special_alloc returned NULL!\n"); |
| 1451 | return -1; |
| 1452 | } |
Stephen M. Cameron | e89c0ae | 2010-02-04 08:42:04 -0600 | [diff] [blame] | 1453 | /* address the controller */ |
| 1454 | memset(scsi3addr, 0, sizeof(scsi3addr)); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1455 | fill_cmd(c, logical ? HPSA_REPORT_LOG : HPSA_REPORT_PHYS, h, |
| 1456 | buf, bufsize, 0, scsi3addr, TYPE_CMD); |
| 1457 | if (extended_response) |
| 1458 | c->Request.CDB[1] = extended_response; |
| 1459 | hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE); |
| 1460 | ei = c->err_info; |
| 1461 | if (ei->CommandStatus != 0 && |
| 1462 | ei->CommandStatus != CMD_DATA_UNDERRUN) { |
| 1463 | hpsa_scsi_interpret_error(c); |
| 1464 | rc = -1; |
| 1465 | } |
| 1466 | cmd_special_free(h, c); |
| 1467 | return rc; |
| 1468 | } |
| 1469 | |
| 1470 | static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h, |
| 1471 | struct ReportLUNdata *buf, |
| 1472 | int bufsize, int extended_response) |
| 1473 | { |
| 1474 | return hpsa_scsi_do_report_luns(h, 0, buf, bufsize, extended_response); |
| 1475 | } |
| 1476 | |
| 1477 | static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info *h, |
| 1478 | struct ReportLUNdata *buf, int bufsize) |
| 1479 | { |
| 1480 | return hpsa_scsi_do_report_luns(h, 1, buf, bufsize, 0); |
| 1481 | } |
| 1482 | |
| 1483 | static inline void hpsa_set_bus_target_lun(struct hpsa_scsi_dev_t *device, |
| 1484 | int bus, int target, int lun) |
| 1485 | { |
| 1486 | device->bus = bus; |
| 1487 | device->target = target; |
| 1488 | device->lun = lun; |
| 1489 | } |
| 1490 | |
| 1491 | static int hpsa_update_device_info(struct ctlr_info *h, |
| 1492 | unsigned char scsi3addr[], struct hpsa_scsi_dev_t *this_device) |
| 1493 | { |
| 1494 | #define OBDR_TAPE_INQ_SIZE 49 |
Stephen M. Cameron | ea6d3bc | 2010-02-04 08:42:09 -0600 | [diff] [blame] | 1495 | unsigned char *inq_buff; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1496 | |
Stephen M. Cameron | ea6d3bc | 2010-02-04 08:42:09 -0600 | [diff] [blame] | 1497 | inq_buff = kzalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1498 | if (!inq_buff) |
| 1499 | goto bail_out; |
| 1500 | |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1501 | /* Do an inquiry to the device to see what it is. */ |
| 1502 | if (hpsa_scsi_do_inquiry(h, scsi3addr, 0, inq_buff, |
| 1503 | (unsigned char) OBDR_TAPE_INQ_SIZE) != 0) { |
| 1504 | /* Inquiry failed (msg printed already) */ |
| 1505 | dev_err(&h->pdev->dev, |
| 1506 | "hpsa_update_device_info: inquiry failed\n"); |
| 1507 | goto bail_out; |
| 1508 | } |
| 1509 | |
| 1510 | /* As a side effect, record the firmware version number |
| 1511 | * if we happen to be talking to the RAID controller. |
| 1512 | */ |
| 1513 | if (is_hba_lunid(scsi3addr)) |
| 1514 | memcpy(h->firm_ver, &inq_buff[32], 4); |
| 1515 | |
| 1516 | this_device->devtype = (inq_buff[0] & 0x1f); |
| 1517 | memcpy(this_device->scsi3addr, scsi3addr, 8); |
| 1518 | memcpy(this_device->vendor, &inq_buff[8], |
| 1519 | sizeof(this_device->vendor)); |
| 1520 | memcpy(this_device->model, &inq_buff[16], |
| 1521 | sizeof(this_device->model)); |
| 1522 | memcpy(this_device->revision, &inq_buff[32], |
| 1523 | sizeof(this_device->revision)); |
| 1524 | memset(this_device->device_id, 0, |
| 1525 | sizeof(this_device->device_id)); |
| 1526 | hpsa_get_device_id(h, scsi3addr, this_device->device_id, |
| 1527 | sizeof(this_device->device_id)); |
| 1528 | |
| 1529 | if (this_device->devtype == TYPE_DISK && |
| 1530 | is_logical_dev_addr_mode(scsi3addr)) |
| 1531 | hpsa_get_raid_level(h, scsi3addr, &this_device->raid_level); |
| 1532 | else |
| 1533 | this_device->raid_level = RAID_UNKNOWN; |
| 1534 | |
| 1535 | kfree(inq_buff); |
| 1536 | return 0; |
| 1537 | |
| 1538 | bail_out: |
| 1539 | kfree(inq_buff); |
| 1540 | return 1; |
| 1541 | } |
| 1542 | |
| 1543 | static unsigned char *msa2xxx_model[] = { |
| 1544 | "MSA2012", |
| 1545 | "MSA2024", |
| 1546 | "MSA2312", |
| 1547 | "MSA2324", |
| 1548 | NULL, |
| 1549 | }; |
| 1550 | |
| 1551 | static int is_msa2xxx(struct ctlr_info *h, struct hpsa_scsi_dev_t *device) |
| 1552 | { |
| 1553 | int i; |
| 1554 | |
| 1555 | for (i = 0; msa2xxx_model[i]; i++) |
| 1556 | if (strncmp(device->model, msa2xxx_model[i], |
| 1557 | strlen(msa2xxx_model[i])) == 0) |
| 1558 | return 1; |
| 1559 | return 0; |
| 1560 | } |
| 1561 | |
| 1562 | /* Helper function to assign bus, target, lun mapping of devices. |
| 1563 | * Puts non-msa2xxx logical volumes on bus 0, msa2xxx logical |
| 1564 | * volumes on bus 1, physical devices on bus 2. and the hba on bus 3. |
| 1565 | * Logical drive target and lun are assigned at this time, but |
| 1566 | * physical device lun and target assignment are deferred (assigned |
| 1567 | * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.) |
| 1568 | */ |
| 1569 | static void figure_bus_target_lun(struct ctlr_info *h, |
Stephen M. Cameron | 01a02ff | 2010-02-04 08:41:33 -0600 | [diff] [blame] | 1570 | u8 *lunaddrbytes, int *bus, int *target, int *lun, |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1571 | struct hpsa_scsi_dev_t *device) |
| 1572 | { |
Stephen M. Cameron | 01a02ff | 2010-02-04 08:41:33 -0600 | [diff] [blame] | 1573 | u32 lunid; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1574 | |
| 1575 | if (is_logical_dev_addr_mode(lunaddrbytes)) { |
| 1576 | /* logical device */ |
Stephen M. Cameron | 339b2b1 | 2010-02-04 08:42:50 -0600 | [diff] [blame] | 1577 | if (unlikely(is_scsi_rev_5(h))) { |
| 1578 | /* p1210m, logical drives lun assignments |
| 1579 | * match SCSI REPORT LUNS data. |
| 1580 | */ |
| 1581 | lunid = le32_to_cpu(*((__le32 *) lunaddrbytes)); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1582 | *bus = 0; |
Stephen M. Cameron | 339b2b1 | 2010-02-04 08:42:50 -0600 | [diff] [blame] | 1583 | *target = 0; |
| 1584 | *lun = (lunid & 0x3fff) + 1; |
| 1585 | } else { |
| 1586 | /* not p1210m... */ |
| 1587 | lunid = le32_to_cpu(*((__le32 *) lunaddrbytes)); |
| 1588 | if (is_msa2xxx(h, device)) { |
| 1589 | /* msa2xxx way, put logicals on bus 1 |
| 1590 | * and match target/lun numbers box |
| 1591 | * reports. |
| 1592 | */ |
| 1593 | *bus = 1; |
| 1594 | *target = (lunid >> 16) & 0x3fff; |
| 1595 | *lun = lunid & 0x00ff; |
| 1596 | } else { |
| 1597 | /* Traditional smart array way. */ |
| 1598 | *bus = 0; |
| 1599 | *lun = 0; |
| 1600 | *target = lunid & 0x3fff; |
| 1601 | } |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1602 | } |
| 1603 | } else { |
| 1604 | /* physical device */ |
| 1605 | if (is_hba_lunid(lunaddrbytes)) |
Stephen M. Cameron | 339b2b1 | 2010-02-04 08:42:50 -0600 | [diff] [blame] | 1606 | if (unlikely(is_scsi_rev_5(h))) { |
| 1607 | *bus = 0; /* put p1210m ctlr at 0,0,0 */ |
| 1608 | *target = 0; |
| 1609 | *lun = 0; |
| 1610 | return; |
| 1611 | } else |
| 1612 | *bus = 3; /* traditional smartarray */ |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1613 | else |
Stephen M. Cameron | 339b2b1 | 2010-02-04 08:42:50 -0600 | [diff] [blame] | 1614 | *bus = 2; /* physical disk */ |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1615 | *target = -1; |
| 1616 | *lun = -1; /* we will fill these in later. */ |
| 1617 | } |
| 1618 | } |
| 1619 | |
| 1620 | /* |
| 1621 | * If there is no lun 0 on a target, linux won't find any devices. |
| 1622 | * For the MSA2xxx boxes, we have to manually detect the enclosure |
| 1623 | * which is at lun zero, as CCISS_REPORT_PHYSICAL_LUNS doesn't report |
| 1624 | * it for some reason. *tmpdevice is the target we're adding, |
| 1625 | * this_device is a pointer into the current element of currentsd[] |
| 1626 | * that we're building up in update_scsi_devices(), below. |
| 1627 | * lunzerobits is a bitmap that tracks which targets already have a |
| 1628 | * lun 0 assigned. |
| 1629 | * Returns 1 if an enclosure was added, 0 if not. |
| 1630 | */ |
| 1631 | static int add_msa2xxx_enclosure_device(struct ctlr_info *h, |
| 1632 | struct hpsa_scsi_dev_t *tmpdevice, |
Stephen M. Cameron | 01a02ff | 2010-02-04 08:41:33 -0600 | [diff] [blame] | 1633 | struct hpsa_scsi_dev_t *this_device, u8 *lunaddrbytes, |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1634 | int bus, int target, int lun, unsigned long lunzerobits[], |
| 1635 | int *nmsa2xxx_enclosures) |
| 1636 | { |
| 1637 | unsigned char scsi3addr[8]; |
| 1638 | |
| 1639 | if (test_bit(target, lunzerobits)) |
| 1640 | return 0; /* There is already a lun 0 on this target. */ |
| 1641 | |
| 1642 | if (!is_logical_dev_addr_mode(lunaddrbytes)) |
| 1643 | return 0; /* It's the logical targets that may lack lun 0. */ |
| 1644 | |
| 1645 | if (!is_msa2xxx(h, tmpdevice)) |
| 1646 | return 0; /* It's only the MSA2xxx that have this problem. */ |
| 1647 | |
| 1648 | if (lun == 0) /* if lun is 0, then obviously we have a lun 0. */ |
| 1649 | return 0; |
| 1650 | |
| 1651 | if (is_hba_lunid(scsi3addr)) |
| 1652 | return 0; /* Don't add the RAID controller here. */ |
| 1653 | |
Stephen M. Cameron | 339b2b1 | 2010-02-04 08:42:50 -0600 | [diff] [blame] | 1654 | if (is_scsi_rev_5(h)) |
| 1655 | return 0; /* p1210m doesn't need to do this. */ |
| 1656 | |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1657 | #define MAX_MSA2XXX_ENCLOSURES 32 |
| 1658 | if (*nmsa2xxx_enclosures >= MAX_MSA2XXX_ENCLOSURES) { |
| 1659 | dev_warn(&h->pdev->dev, "Maximum number of MSA2XXX " |
| 1660 | "enclosures exceeded. Check your hardware " |
| 1661 | "configuration."); |
| 1662 | return 0; |
| 1663 | } |
| 1664 | |
| 1665 | memset(scsi3addr, 0, 8); |
| 1666 | scsi3addr[3] = target; |
| 1667 | if (hpsa_update_device_info(h, scsi3addr, this_device)) |
| 1668 | return 0; |
| 1669 | (*nmsa2xxx_enclosures)++; |
| 1670 | hpsa_set_bus_target_lun(this_device, bus, target, 0); |
| 1671 | set_bit(target, lunzerobits); |
| 1672 | return 1; |
| 1673 | } |
| 1674 | |
| 1675 | /* |
| 1676 | * Do CISS_REPORT_PHYS and CISS_REPORT_LOG. Data is returned in physdev, |
| 1677 | * logdev. The number of luns in physdev and logdev are returned in |
| 1678 | * *nphysicals and *nlogicals, respectively. |
| 1679 | * Returns 0 on success, -1 otherwise. |
| 1680 | */ |
| 1681 | static int hpsa_gather_lun_info(struct ctlr_info *h, |
| 1682 | int reportlunsize, |
Stephen M. Cameron | 01a02ff | 2010-02-04 08:41:33 -0600 | [diff] [blame] | 1683 | struct ReportLUNdata *physdev, u32 *nphysicals, |
| 1684 | struct ReportLUNdata *logdev, u32 *nlogicals) |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1685 | { |
| 1686 | if (hpsa_scsi_do_report_phys_luns(h, physdev, reportlunsize, 0)) { |
| 1687 | dev_err(&h->pdev->dev, "report physical LUNs failed.\n"); |
| 1688 | return -1; |
| 1689 | } |
Stephen M. Cameron | 6df1e95 | 2010-02-04 08:42:19 -0600 | [diff] [blame] | 1690 | *nphysicals = be32_to_cpu(*((__be32 *)physdev->LUNListLength)) / 8; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1691 | if (*nphysicals > HPSA_MAX_PHYS_LUN) { |
| 1692 | dev_warn(&h->pdev->dev, "maximum physical LUNs (%d) exceeded." |
| 1693 | " %d LUNs ignored.\n", HPSA_MAX_PHYS_LUN, |
| 1694 | *nphysicals - HPSA_MAX_PHYS_LUN); |
| 1695 | *nphysicals = HPSA_MAX_PHYS_LUN; |
| 1696 | } |
| 1697 | if (hpsa_scsi_do_report_log_luns(h, logdev, reportlunsize)) { |
| 1698 | dev_err(&h->pdev->dev, "report logical LUNs failed.\n"); |
| 1699 | return -1; |
| 1700 | } |
Stephen M. Cameron | 6df1e95 | 2010-02-04 08:42:19 -0600 | [diff] [blame] | 1701 | *nlogicals = be32_to_cpu(*((__be32 *) logdev->LUNListLength)) / 8; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1702 | /* Reject Logicals in excess of our max capability. */ |
| 1703 | if (*nlogicals > HPSA_MAX_LUN) { |
| 1704 | dev_warn(&h->pdev->dev, |
| 1705 | "maximum logical LUNs (%d) exceeded. " |
| 1706 | "%d LUNs ignored.\n", HPSA_MAX_LUN, |
| 1707 | *nlogicals - HPSA_MAX_LUN); |
| 1708 | *nlogicals = HPSA_MAX_LUN; |
| 1709 | } |
| 1710 | if (*nlogicals + *nphysicals > HPSA_MAX_PHYS_LUN) { |
| 1711 | dev_warn(&h->pdev->dev, |
| 1712 | "maximum logical + physical LUNs (%d) exceeded. " |
| 1713 | "%d LUNs ignored.\n", HPSA_MAX_PHYS_LUN, |
| 1714 | *nphysicals + *nlogicals - HPSA_MAX_PHYS_LUN); |
| 1715 | *nlogicals = HPSA_MAX_PHYS_LUN - *nphysicals; |
| 1716 | } |
| 1717 | return 0; |
| 1718 | } |
| 1719 | |
Stephen M. Cameron | 339b2b1 | 2010-02-04 08:42:50 -0600 | [diff] [blame] | 1720 | u8 *figure_lunaddrbytes(struct ctlr_info *h, int raid_ctlr_position, int i, |
| 1721 | int nphysicals, int nlogicals, struct ReportLUNdata *physdev_list, |
| 1722 | struct ReportLUNdata *logdev_list) |
| 1723 | { |
| 1724 | /* Helper function, figure out where the LUN ID info is coming from |
| 1725 | * given index i, lists of physical and logical devices, where in |
| 1726 | * the list the raid controller is supposed to appear (first or last) |
| 1727 | */ |
| 1728 | |
| 1729 | int logicals_start = nphysicals + (raid_ctlr_position == 0); |
| 1730 | int last_device = nphysicals + nlogicals + (raid_ctlr_position == 0); |
| 1731 | |
| 1732 | if (i == raid_ctlr_position) |
| 1733 | return RAID_CTLR_LUNID; |
| 1734 | |
| 1735 | if (i < logicals_start) |
| 1736 | return &physdev_list->LUN[i - (raid_ctlr_position == 0)][0]; |
| 1737 | |
| 1738 | if (i < last_device) |
| 1739 | return &logdev_list->LUN[i - nphysicals - |
| 1740 | (raid_ctlr_position == 0)][0]; |
| 1741 | BUG(); |
| 1742 | return NULL; |
| 1743 | } |
| 1744 | |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1745 | static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno) |
| 1746 | { |
| 1747 | /* the idea here is we could get notified |
| 1748 | * that some devices have changed, so we do a report |
| 1749 | * physical luns and report logical luns cmd, and adjust |
| 1750 | * our list of devices accordingly. |
| 1751 | * |
| 1752 | * The scsi3addr's of devices won't change so long as the |
| 1753 | * adapter is not reset. That means we can rescan and |
| 1754 | * tell which devices we already know about, vs. new |
| 1755 | * devices, vs. disappearing devices. |
| 1756 | */ |
| 1757 | struct ReportLUNdata *physdev_list = NULL; |
| 1758 | struct ReportLUNdata *logdev_list = NULL; |
| 1759 | unsigned char *inq_buff = NULL; |
Stephen M. Cameron | 01a02ff | 2010-02-04 08:41:33 -0600 | [diff] [blame] | 1760 | u32 nphysicals = 0; |
| 1761 | u32 nlogicals = 0; |
| 1762 | u32 ndev_allocated = 0; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1763 | struct hpsa_scsi_dev_t **currentsd, *this_device, *tmpdevice; |
| 1764 | int ncurrent = 0; |
| 1765 | int reportlunsize = sizeof(*physdev_list) + HPSA_MAX_PHYS_LUN * 8; |
| 1766 | int i, nmsa2xxx_enclosures, ndevs_to_allocate; |
| 1767 | int bus, target, lun; |
Stephen M. Cameron | 339b2b1 | 2010-02-04 08:42:50 -0600 | [diff] [blame] | 1768 | int raid_ctlr_position; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1769 | DECLARE_BITMAP(lunzerobits, HPSA_MAX_TARGETS_PER_CTLR); |
| 1770 | |
| 1771 | currentsd = kzalloc(sizeof(*currentsd) * HPSA_MAX_SCSI_DEVS_PER_HBA, |
| 1772 | GFP_KERNEL); |
| 1773 | physdev_list = kzalloc(reportlunsize, GFP_KERNEL); |
| 1774 | logdev_list = kzalloc(reportlunsize, GFP_KERNEL); |
| 1775 | inq_buff = kmalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL); |
| 1776 | tmpdevice = kzalloc(sizeof(*tmpdevice), GFP_KERNEL); |
| 1777 | |
| 1778 | if (!currentsd || !physdev_list || !logdev_list || |
| 1779 | !inq_buff || !tmpdevice) { |
| 1780 | dev_err(&h->pdev->dev, "out of memory\n"); |
| 1781 | goto out; |
| 1782 | } |
| 1783 | memset(lunzerobits, 0, sizeof(lunzerobits)); |
| 1784 | |
| 1785 | if (hpsa_gather_lun_info(h, reportlunsize, physdev_list, &nphysicals, |
| 1786 | logdev_list, &nlogicals)) |
| 1787 | goto out; |
| 1788 | |
| 1789 | /* We might see up to 32 MSA2xxx enclosures, actually 8 of them |
| 1790 | * but each of them 4 times through different paths. The plus 1 |
| 1791 | * is for the RAID controller. |
| 1792 | */ |
| 1793 | ndevs_to_allocate = nphysicals + nlogicals + MAX_MSA2XXX_ENCLOSURES + 1; |
| 1794 | |
| 1795 | /* Allocate the per device structures */ |
| 1796 | for (i = 0; i < ndevs_to_allocate; i++) { |
| 1797 | currentsd[i] = kzalloc(sizeof(*currentsd[i]), GFP_KERNEL); |
| 1798 | if (!currentsd[i]) { |
| 1799 | dev_warn(&h->pdev->dev, "out of memory at %s:%d\n", |
| 1800 | __FILE__, __LINE__); |
| 1801 | goto out; |
| 1802 | } |
| 1803 | ndev_allocated++; |
| 1804 | } |
| 1805 | |
Stephen M. Cameron | 339b2b1 | 2010-02-04 08:42:50 -0600 | [diff] [blame] | 1806 | if (unlikely(is_scsi_rev_5(h))) |
| 1807 | raid_ctlr_position = 0; |
| 1808 | else |
| 1809 | raid_ctlr_position = nphysicals + nlogicals; |
| 1810 | |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1811 | /* adjust our table of devices */ |
| 1812 | nmsa2xxx_enclosures = 0; |
| 1813 | for (i = 0; i < nphysicals + nlogicals + 1; i++) { |
Stephen M. Cameron | 01a02ff | 2010-02-04 08:41:33 -0600 | [diff] [blame] | 1814 | u8 *lunaddrbytes; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1815 | |
| 1816 | /* Figure out where the LUN ID info is coming from */ |
Stephen M. Cameron | 339b2b1 | 2010-02-04 08:42:50 -0600 | [diff] [blame] | 1817 | lunaddrbytes = figure_lunaddrbytes(h, raid_ctlr_position, |
| 1818 | i, nphysicals, nlogicals, physdev_list, logdev_list); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1819 | /* skip masked physical devices. */ |
Stephen M. Cameron | 339b2b1 | 2010-02-04 08:42:50 -0600 | [diff] [blame] | 1820 | if (lunaddrbytes[3] & 0xC0 && |
| 1821 | i < nphysicals + (raid_ctlr_position == 0)) |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1822 | continue; |
| 1823 | |
| 1824 | /* Get device type, vendor, model, device id */ |
| 1825 | if (hpsa_update_device_info(h, lunaddrbytes, tmpdevice)) |
| 1826 | continue; /* skip it if we can't talk to it. */ |
| 1827 | figure_bus_target_lun(h, lunaddrbytes, &bus, &target, &lun, |
| 1828 | tmpdevice); |
| 1829 | this_device = currentsd[ncurrent]; |
| 1830 | |
| 1831 | /* |
| 1832 | * For the msa2xxx boxes, we have to insert a LUN 0 which |
| 1833 | * doesn't show up in CCISS_REPORT_PHYSICAL data, but there |
| 1834 | * is nonetheless an enclosure device there. We have to |
| 1835 | * present that otherwise linux won't find anything if |
| 1836 | * there is no lun 0. |
| 1837 | */ |
| 1838 | if (add_msa2xxx_enclosure_device(h, tmpdevice, this_device, |
| 1839 | lunaddrbytes, bus, target, lun, lunzerobits, |
| 1840 | &nmsa2xxx_enclosures)) { |
| 1841 | ncurrent++; |
| 1842 | this_device = currentsd[ncurrent]; |
| 1843 | } |
| 1844 | |
| 1845 | *this_device = *tmpdevice; |
| 1846 | hpsa_set_bus_target_lun(this_device, bus, target, lun); |
| 1847 | |
| 1848 | switch (this_device->devtype) { |
| 1849 | case TYPE_ROM: { |
| 1850 | /* We don't *really* support actual CD-ROM devices, |
| 1851 | * just "One Button Disaster Recovery" tape drive |
| 1852 | * which temporarily pretends to be a CD-ROM drive. |
| 1853 | * So we check that the device is really an OBDR tape |
| 1854 | * device by checking for "$DR-10" in bytes 43-48 of |
| 1855 | * the inquiry data. |
| 1856 | */ |
| 1857 | char obdr_sig[7]; |
| 1858 | #define OBDR_TAPE_SIG "$DR-10" |
| 1859 | strncpy(obdr_sig, &inq_buff[43], 6); |
| 1860 | obdr_sig[6] = '\0'; |
| 1861 | if (strncmp(obdr_sig, OBDR_TAPE_SIG, 6) != 0) |
| 1862 | /* Not OBDR device, ignore it. */ |
| 1863 | break; |
| 1864 | } |
| 1865 | ncurrent++; |
| 1866 | break; |
| 1867 | case TYPE_DISK: |
| 1868 | if (i < nphysicals) |
| 1869 | break; |
| 1870 | ncurrent++; |
| 1871 | break; |
| 1872 | case TYPE_TAPE: |
| 1873 | case TYPE_MEDIUM_CHANGER: |
| 1874 | ncurrent++; |
| 1875 | break; |
| 1876 | case TYPE_RAID: |
| 1877 | /* Only present the Smartarray HBA as a RAID controller. |
| 1878 | * If it's a RAID controller other than the HBA itself |
| 1879 | * (an external RAID controller, MSA500 or similar) |
| 1880 | * don't present it. |
| 1881 | */ |
| 1882 | if (!is_hba_lunid(lunaddrbytes)) |
| 1883 | break; |
| 1884 | ncurrent++; |
| 1885 | break; |
| 1886 | default: |
| 1887 | break; |
| 1888 | } |
| 1889 | if (ncurrent >= HPSA_MAX_SCSI_DEVS_PER_HBA) |
| 1890 | break; |
| 1891 | } |
| 1892 | adjust_hpsa_scsi_table(h, hostno, currentsd, ncurrent); |
| 1893 | out: |
| 1894 | kfree(tmpdevice); |
| 1895 | for (i = 0; i < ndev_allocated; i++) |
| 1896 | kfree(currentsd[i]); |
| 1897 | kfree(currentsd); |
| 1898 | kfree(inq_buff); |
| 1899 | kfree(physdev_list); |
| 1900 | kfree(logdev_list); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1901 | } |
| 1902 | |
| 1903 | /* hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci |
| 1904 | * dma mapping and fills in the scatter gather entries of the |
| 1905 | * hpsa command, cp. |
| 1906 | */ |
| 1907 | static int hpsa_scatter_gather(struct pci_dev *pdev, |
| 1908 | struct CommandList *cp, |
| 1909 | struct scsi_cmnd *cmd) |
| 1910 | { |
| 1911 | unsigned int len; |
| 1912 | struct scatterlist *sg; |
Stephen M. Cameron | 01a02ff | 2010-02-04 08:41:33 -0600 | [diff] [blame] | 1913 | u64 addr64; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1914 | int use_sg, i; |
| 1915 | |
| 1916 | BUG_ON(scsi_sg_count(cmd) > MAXSGENTRIES); |
| 1917 | |
| 1918 | use_sg = scsi_dma_map(cmd); |
| 1919 | if (use_sg < 0) |
| 1920 | return use_sg; |
| 1921 | |
| 1922 | if (!use_sg) |
| 1923 | goto sglist_finished; |
| 1924 | |
| 1925 | scsi_for_each_sg(cmd, sg, use_sg, i) { |
Stephen M. Cameron | 01a02ff | 2010-02-04 08:41:33 -0600 | [diff] [blame] | 1926 | addr64 = (u64) sg_dma_address(sg); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1927 | len = sg_dma_len(sg); |
| 1928 | cp->SG[i].Addr.lower = |
Stephen M. Cameron | 01a02ff | 2010-02-04 08:41:33 -0600 | [diff] [blame] | 1929 | (u32) (addr64 & (u64) 0x00000000FFFFFFFF); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1930 | cp->SG[i].Addr.upper = |
Stephen M. Cameron | 01a02ff | 2010-02-04 08:41:33 -0600 | [diff] [blame] | 1931 | (u32) ((addr64 >> 32) & (u64) 0x00000000FFFFFFFF); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1932 | cp->SG[i].Len = len; |
| 1933 | cp->SG[i].Ext = 0; /* we are not chaining */ |
| 1934 | } |
| 1935 | |
| 1936 | sglist_finished: |
| 1937 | |
Stephen M. Cameron | 01a02ff | 2010-02-04 08:41:33 -0600 | [diff] [blame] | 1938 | cp->Header.SGList = (u8) use_sg; /* no. SGs contig in this cmd */ |
| 1939 | cp->Header.SGTotal = (u16) use_sg; /* total sgs in this cmd list */ |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1940 | return 0; |
| 1941 | } |
| 1942 | |
| 1943 | |
| 1944 | static int hpsa_scsi_queue_command(struct scsi_cmnd *cmd, |
| 1945 | void (*done)(struct scsi_cmnd *)) |
| 1946 | { |
| 1947 | struct ctlr_info *h; |
| 1948 | struct hpsa_scsi_dev_t *dev; |
| 1949 | unsigned char scsi3addr[8]; |
| 1950 | struct CommandList *c; |
| 1951 | unsigned long flags; |
| 1952 | |
| 1953 | /* Get the ptr to our adapter structure out of cmd->host. */ |
| 1954 | h = sdev_to_hba(cmd->device); |
| 1955 | dev = cmd->device->hostdata; |
| 1956 | if (!dev) { |
| 1957 | cmd->result = DID_NO_CONNECT << 16; |
| 1958 | done(cmd); |
| 1959 | return 0; |
| 1960 | } |
| 1961 | memcpy(scsi3addr, dev->scsi3addr, sizeof(scsi3addr)); |
| 1962 | |
| 1963 | /* Need a lock as this is being allocated from the pool */ |
| 1964 | spin_lock_irqsave(&h->lock, flags); |
| 1965 | c = cmd_alloc(h); |
| 1966 | spin_unlock_irqrestore(&h->lock, flags); |
| 1967 | if (c == NULL) { /* trouble... */ |
| 1968 | dev_err(&h->pdev->dev, "cmd_alloc returned NULL!\n"); |
| 1969 | return SCSI_MLQUEUE_HOST_BUSY; |
| 1970 | } |
| 1971 | |
| 1972 | /* Fill in the command list header */ |
| 1973 | |
| 1974 | cmd->scsi_done = done; /* save this for use by completion code */ |
| 1975 | |
| 1976 | /* save c in case we have to abort it */ |
| 1977 | cmd->host_scribble = (unsigned char *) c; |
| 1978 | |
| 1979 | c->cmd_type = CMD_SCSI; |
| 1980 | c->scsi_cmd = cmd; |
| 1981 | c->Header.ReplyQueue = 0; /* unused in simple mode */ |
| 1982 | memcpy(&c->Header.LUN.LunAddrBytes[0], &scsi3addr[0], 8); |
Don Brace | 303932f | 2010-02-04 08:42:40 -0600 | [diff] [blame] | 1983 | c->Header.Tag.lower = (c->cmdindex << DIRECT_LOOKUP_SHIFT); |
| 1984 | c->Header.Tag.lower |= DIRECT_LOOKUP_BIT; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 1985 | |
| 1986 | /* Fill in the request block... */ |
| 1987 | |
| 1988 | c->Request.Timeout = 0; |
| 1989 | memset(c->Request.CDB, 0, sizeof(c->Request.CDB)); |
| 1990 | BUG_ON(cmd->cmd_len > sizeof(c->Request.CDB)); |
| 1991 | c->Request.CDBLen = cmd->cmd_len; |
| 1992 | memcpy(c->Request.CDB, cmd->cmnd, cmd->cmd_len); |
| 1993 | c->Request.Type.Type = TYPE_CMD; |
| 1994 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 1995 | switch (cmd->sc_data_direction) { |
| 1996 | case DMA_TO_DEVICE: |
| 1997 | c->Request.Type.Direction = XFER_WRITE; |
| 1998 | break; |
| 1999 | case DMA_FROM_DEVICE: |
| 2000 | c->Request.Type.Direction = XFER_READ; |
| 2001 | break; |
| 2002 | case DMA_NONE: |
| 2003 | c->Request.Type.Direction = XFER_NONE; |
| 2004 | break; |
| 2005 | case DMA_BIDIRECTIONAL: |
| 2006 | /* This can happen if a buggy application does a scsi passthru |
| 2007 | * and sets both inlen and outlen to non-zero. ( see |
| 2008 | * ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() ) |
| 2009 | */ |
| 2010 | |
| 2011 | c->Request.Type.Direction = XFER_RSVD; |
| 2012 | /* This is technically wrong, and hpsa controllers should |
| 2013 | * reject it with CMD_INVALID, which is the most correct |
| 2014 | * response, but non-fibre backends appear to let it |
| 2015 | * slide by, and give the same results as if this field |
| 2016 | * were set correctly. Either way is acceptable for |
| 2017 | * our purposes here. |
| 2018 | */ |
| 2019 | |
| 2020 | break; |
| 2021 | |
| 2022 | default: |
| 2023 | dev_err(&h->pdev->dev, "unknown data direction: %d\n", |
| 2024 | cmd->sc_data_direction); |
| 2025 | BUG(); |
| 2026 | break; |
| 2027 | } |
| 2028 | |
| 2029 | if (hpsa_scatter_gather(h->pdev, c, cmd) < 0) { /* Fill SG list */ |
| 2030 | cmd_free(h, c); |
| 2031 | return SCSI_MLQUEUE_HOST_BUSY; |
| 2032 | } |
| 2033 | enqueue_cmd_and_start_io(h, c); |
| 2034 | /* the cmd'll come back via intr handler in complete_scsi_command() */ |
| 2035 | return 0; |
| 2036 | } |
| 2037 | |
Stephen M. Cameron | a08a847 | 2010-02-04 08:43:16 -0600 | [diff] [blame] | 2038 | static void hpsa_scan_start(struct Scsi_Host *sh) |
| 2039 | { |
| 2040 | struct ctlr_info *h = shost_to_hba(sh); |
| 2041 | unsigned long flags; |
| 2042 | |
| 2043 | /* wait until any scan already in progress is finished. */ |
| 2044 | while (1) { |
| 2045 | spin_lock_irqsave(&h->scan_lock, flags); |
| 2046 | if (h->scan_finished) |
| 2047 | break; |
| 2048 | spin_unlock_irqrestore(&h->scan_lock, flags); |
| 2049 | wait_event(h->scan_wait_queue, h->scan_finished); |
| 2050 | /* Note: We don't need to worry about a race between this |
| 2051 | * thread and driver unload because the midlayer will |
| 2052 | * have incremented the reference count, so unload won't |
| 2053 | * happen if we're in here. |
| 2054 | */ |
| 2055 | } |
| 2056 | h->scan_finished = 0; /* mark scan as in progress */ |
| 2057 | spin_unlock_irqrestore(&h->scan_lock, flags); |
| 2058 | |
| 2059 | hpsa_update_scsi_devices(h, h->scsi_host->host_no); |
| 2060 | |
| 2061 | spin_lock_irqsave(&h->scan_lock, flags); |
| 2062 | h->scan_finished = 1; /* mark scan as finished. */ |
| 2063 | wake_up_all(&h->scan_wait_queue); |
| 2064 | spin_unlock_irqrestore(&h->scan_lock, flags); |
| 2065 | } |
| 2066 | |
| 2067 | static int hpsa_scan_finished(struct Scsi_Host *sh, |
| 2068 | unsigned long elapsed_time) |
| 2069 | { |
| 2070 | struct ctlr_info *h = shost_to_hba(sh); |
| 2071 | unsigned long flags; |
| 2072 | int finished; |
| 2073 | |
| 2074 | spin_lock_irqsave(&h->scan_lock, flags); |
| 2075 | finished = h->scan_finished; |
| 2076 | spin_unlock_irqrestore(&h->scan_lock, flags); |
| 2077 | return finished; |
| 2078 | } |
| 2079 | |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 2080 | static void hpsa_unregister_scsi(struct ctlr_info *h) |
| 2081 | { |
| 2082 | /* we are being forcibly unloaded, and may not refuse. */ |
| 2083 | scsi_remove_host(h->scsi_host); |
| 2084 | scsi_host_put(h->scsi_host); |
| 2085 | h->scsi_host = NULL; |
| 2086 | } |
| 2087 | |
| 2088 | static int hpsa_register_scsi(struct ctlr_info *h) |
| 2089 | { |
| 2090 | int rc; |
| 2091 | |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 2092 | rc = hpsa_scsi_detect(h); |
| 2093 | if (rc != 0) |
| 2094 | dev_err(&h->pdev->dev, "hpsa_register_scsi: failed" |
| 2095 | " hpsa_scsi_detect(), rc is %d\n", rc); |
| 2096 | return rc; |
| 2097 | } |
| 2098 | |
| 2099 | static int wait_for_device_to_become_ready(struct ctlr_info *h, |
| 2100 | unsigned char lunaddr[]) |
| 2101 | { |
| 2102 | int rc = 0; |
| 2103 | int count = 0; |
| 2104 | int waittime = 1; /* seconds */ |
| 2105 | struct CommandList *c; |
| 2106 | |
| 2107 | c = cmd_special_alloc(h); |
| 2108 | if (!c) { |
| 2109 | dev_warn(&h->pdev->dev, "out of memory in " |
| 2110 | "wait_for_device_to_become_ready.\n"); |
| 2111 | return IO_ERROR; |
| 2112 | } |
| 2113 | |
| 2114 | /* Send test unit ready until device ready, or give up. */ |
| 2115 | while (count < HPSA_TUR_RETRY_LIMIT) { |
| 2116 | |
| 2117 | /* Wait for a bit. do this first, because if we send |
| 2118 | * the TUR right away, the reset will just abort it. |
| 2119 | */ |
| 2120 | msleep(1000 * waittime); |
| 2121 | count++; |
| 2122 | |
| 2123 | /* Increase wait time with each try, up to a point. */ |
| 2124 | if (waittime < HPSA_MAX_WAIT_INTERVAL_SECS) |
| 2125 | waittime = waittime * 2; |
| 2126 | |
| 2127 | /* Send the Test Unit Ready */ |
| 2128 | fill_cmd(c, TEST_UNIT_READY, h, NULL, 0, 0, lunaddr, TYPE_CMD); |
| 2129 | hpsa_scsi_do_simple_cmd_core(h, c); |
| 2130 | /* no unmap needed here because no data xfer. */ |
| 2131 | |
| 2132 | if (c->err_info->CommandStatus == CMD_SUCCESS) |
| 2133 | break; |
| 2134 | |
| 2135 | if (c->err_info->CommandStatus == CMD_TARGET_STATUS && |
| 2136 | c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION && |
| 2137 | (c->err_info->SenseInfo[2] == NO_SENSE || |
| 2138 | c->err_info->SenseInfo[2] == UNIT_ATTENTION)) |
| 2139 | break; |
| 2140 | |
| 2141 | dev_warn(&h->pdev->dev, "waiting %d secs " |
| 2142 | "for device to become ready.\n", waittime); |
| 2143 | rc = 1; /* device not ready. */ |
| 2144 | } |
| 2145 | |
| 2146 | if (rc) |
| 2147 | dev_warn(&h->pdev->dev, "giving up on device.\n"); |
| 2148 | else |
| 2149 | dev_warn(&h->pdev->dev, "device is ready.\n"); |
| 2150 | |
| 2151 | cmd_special_free(h, c); |
| 2152 | return rc; |
| 2153 | } |
| 2154 | |
| 2155 | /* Need at least one of these error handlers to keep ../scsi/hosts.c from |
| 2156 | * complaining. Doing a host- or bus-reset can't do anything good here. |
| 2157 | */ |
| 2158 | static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd) |
| 2159 | { |
| 2160 | int rc; |
| 2161 | struct ctlr_info *h; |
| 2162 | struct hpsa_scsi_dev_t *dev; |
| 2163 | |
| 2164 | /* find the controller to which the command to be aborted was sent */ |
| 2165 | h = sdev_to_hba(scsicmd->device); |
| 2166 | if (h == NULL) /* paranoia */ |
| 2167 | return FAILED; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 2168 | dev = scsicmd->device->hostdata; |
| 2169 | if (!dev) { |
| 2170 | dev_err(&h->pdev->dev, "hpsa_eh_device_reset_handler: " |
| 2171 | "device lookup failed.\n"); |
| 2172 | return FAILED; |
| 2173 | } |
Stephen M. Cameron | d416b0c | 2010-02-04 08:43:21 -0600 | [diff] [blame] | 2174 | dev_warn(&h->pdev->dev, "resetting device %d:%d:%d:%d\n", |
| 2175 | h->scsi_host->host_no, dev->bus, dev->target, dev->lun); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 2176 | /* send a reset to the SCSI LUN which the command was sent to */ |
| 2177 | rc = hpsa_send_reset(h, dev->scsi3addr); |
| 2178 | if (rc == 0 && wait_for_device_to_become_ready(h, dev->scsi3addr) == 0) |
| 2179 | return SUCCESS; |
| 2180 | |
| 2181 | dev_warn(&h->pdev->dev, "resetting device failed.\n"); |
| 2182 | return FAILED; |
| 2183 | } |
| 2184 | |
| 2185 | /* |
| 2186 | * For operations that cannot sleep, a command block is allocated at init, |
| 2187 | * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track |
| 2188 | * which ones are free or in use. Lock must be held when calling this. |
| 2189 | * cmd_free() is the complement. |
| 2190 | */ |
| 2191 | static struct CommandList *cmd_alloc(struct ctlr_info *h) |
| 2192 | { |
| 2193 | struct CommandList *c; |
| 2194 | int i; |
| 2195 | union u64bit temp64; |
| 2196 | dma_addr_t cmd_dma_handle, err_dma_handle; |
| 2197 | |
| 2198 | do { |
| 2199 | i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds); |
| 2200 | if (i == h->nr_cmds) |
| 2201 | return NULL; |
| 2202 | } while (test_and_set_bit |
| 2203 | (i & (BITS_PER_LONG - 1), |
| 2204 | h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0); |
| 2205 | c = h->cmd_pool + i; |
| 2206 | memset(c, 0, sizeof(*c)); |
| 2207 | cmd_dma_handle = h->cmd_pool_dhandle |
| 2208 | + i * sizeof(*c); |
| 2209 | c->err_info = h->errinfo_pool + i; |
| 2210 | memset(c->err_info, 0, sizeof(*c->err_info)); |
| 2211 | err_dma_handle = h->errinfo_pool_dhandle |
| 2212 | + i * sizeof(*c->err_info); |
| 2213 | h->nr_allocs++; |
| 2214 | |
| 2215 | c->cmdindex = i; |
| 2216 | |
| 2217 | INIT_HLIST_NODE(&c->list); |
Stephen M. Cameron | 01a02ff | 2010-02-04 08:41:33 -0600 | [diff] [blame] | 2218 | c->busaddr = (u32) cmd_dma_handle; |
| 2219 | temp64.val = (u64) err_dma_handle; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 2220 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
| 2221 | c->ErrDesc.Addr.upper = temp64.val32.upper; |
| 2222 | c->ErrDesc.Len = sizeof(*c->err_info); |
| 2223 | |
| 2224 | c->h = h; |
| 2225 | return c; |
| 2226 | } |
| 2227 | |
| 2228 | /* For operations that can wait for kmalloc to possibly sleep, |
| 2229 | * this routine can be called. Lock need not be held to call |
| 2230 | * cmd_special_alloc. cmd_special_free() is the complement. |
| 2231 | */ |
| 2232 | static struct CommandList *cmd_special_alloc(struct ctlr_info *h) |
| 2233 | { |
| 2234 | struct CommandList *c; |
| 2235 | union u64bit temp64; |
| 2236 | dma_addr_t cmd_dma_handle, err_dma_handle; |
| 2237 | |
| 2238 | c = pci_alloc_consistent(h->pdev, sizeof(*c), &cmd_dma_handle); |
| 2239 | if (c == NULL) |
| 2240 | return NULL; |
| 2241 | memset(c, 0, sizeof(*c)); |
| 2242 | |
| 2243 | c->cmdindex = -1; |
| 2244 | |
| 2245 | c->err_info = pci_alloc_consistent(h->pdev, sizeof(*c->err_info), |
| 2246 | &err_dma_handle); |
| 2247 | |
| 2248 | if (c->err_info == NULL) { |
| 2249 | pci_free_consistent(h->pdev, |
| 2250 | sizeof(*c), c, cmd_dma_handle); |
| 2251 | return NULL; |
| 2252 | } |
| 2253 | memset(c->err_info, 0, sizeof(*c->err_info)); |
| 2254 | |
| 2255 | INIT_HLIST_NODE(&c->list); |
Stephen M. Cameron | 01a02ff | 2010-02-04 08:41:33 -0600 | [diff] [blame] | 2256 | c->busaddr = (u32) cmd_dma_handle; |
| 2257 | temp64.val = (u64) err_dma_handle; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 2258 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
| 2259 | c->ErrDesc.Addr.upper = temp64.val32.upper; |
| 2260 | c->ErrDesc.Len = sizeof(*c->err_info); |
| 2261 | |
| 2262 | c->h = h; |
| 2263 | return c; |
| 2264 | } |
| 2265 | |
| 2266 | static void cmd_free(struct ctlr_info *h, struct CommandList *c) |
| 2267 | { |
| 2268 | int i; |
| 2269 | |
| 2270 | i = c - h->cmd_pool; |
| 2271 | clear_bit(i & (BITS_PER_LONG - 1), |
| 2272 | h->cmd_pool_bits + (i / BITS_PER_LONG)); |
| 2273 | h->nr_frees++; |
| 2274 | } |
| 2275 | |
| 2276 | static void cmd_special_free(struct ctlr_info *h, struct CommandList *c) |
| 2277 | { |
| 2278 | union u64bit temp64; |
| 2279 | |
| 2280 | temp64.val32.lower = c->ErrDesc.Addr.lower; |
| 2281 | temp64.val32.upper = c->ErrDesc.Addr.upper; |
| 2282 | pci_free_consistent(h->pdev, sizeof(*c->err_info), |
| 2283 | c->err_info, (dma_addr_t) temp64.val); |
| 2284 | pci_free_consistent(h->pdev, sizeof(*c), |
| 2285 | c, (dma_addr_t) c->busaddr); |
| 2286 | } |
| 2287 | |
| 2288 | #ifdef CONFIG_COMPAT |
| 2289 | |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 2290 | static int hpsa_ioctl32_passthru(struct scsi_device *dev, int cmd, void *arg) |
| 2291 | { |
| 2292 | IOCTL32_Command_struct __user *arg32 = |
| 2293 | (IOCTL32_Command_struct __user *) arg; |
| 2294 | IOCTL_Command_struct arg64; |
| 2295 | IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); |
| 2296 | int err; |
| 2297 | u32 cp; |
| 2298 | |
| 2299 | err = 0; |
| 2300 | err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, |
| 2301 | sizeof(arg64.LUN_info)); |
| 2302 | err |= copy_from_user(&arg64.Request, &arg32->Request, |
| 2303 | sizeof(arg64.Request)); |
| 2304 | err |= copy_from_user(&arg64.error_info, &arg32->error_info, |
| 2305 | sizeof(arg64.error_info)); |
| 2306 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
| 2307 | err |= get_user(cp, &arg32->buf); |
| 2308 | arg64.buf = compat_ptr(cp); |
| 2309 | err |= copy_to_user(p, &arg64, sizeof(arg64)); |
| 2310 | |
| 2311 | if (err) |
| 2312 | return -EFAULT; |
| 2313 | |
Stephen M. Cameron | e39eeae | 2010-02-04 08:43:46 -0600 | [diff] [blame] | 2314 | err = hpsa_ioctl(dev, CCISS_PASSTHRU, (void *)p); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 2315 | if (err) |
| 2316 | return err; |
| 2317 | err |= copy_in_user(&arg32->error_info, &p->error_info, |
| 2318 | sizeof(arg32->error_info)); |
| 2319 | if (err) |
| 2320 | return -EFAULT; |
| 2321 | return err; |
| 2322 | } |
| 2323 | |
| 2324 | static int hpsa_ioctl32_big_passthru(struct scsi_device *dev, |
| 2325 | int cmd, void *arg) |
| 2326 | { |
| 2327 | BIG_IOCTL32_Command_struct __user *arg32 = |
| 2328 | (BIG_IOCTL32_Command_struct __user *) arg; |
| 2329 | BIG_IOCTL_Command_struct arg64; |
| 2330 | BIG_IOCTL_Command_struct __user *p = |
| 2331 | compat_alloc_user_space(sizeof(arg64)); |
| 2332 | int err; |
| 2333 | u32 cp; |
| 2334 | |
| 2335 | err = 0; |
| 2336 | err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, |
| 2337 | sizeof(arg64.LUN_info)); |
| 2338 | err |= copy_from_user(&arg64.Request, &arg32->Request, |
| 2339 | sizeof(arg64.Request)); |
| 2340 | err |= copy_from_user(&arg64.error_info, &arg32->error_info, |
| 2341 | sizeof(arg64.error_info)); |
| 2342 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
| 2343 | err |= get_user(arg64.malloc_size, &arg32->malloc_size); |
| 2344 | err |= get_user(cp, &arg32->buf); |
| 2345 | arg64.buf = compat_ptr(cp); |
| 2346 | err |= copy_to_user(p, &arg64, sizeof(arg64)); |
| 2347 | |
| 2348 | if (err) |
| 2349 | return -EFAULT; |
| 2350 | |
Stephen M. Cameron | e39eeae | 2010-02-04 08:43:46 -0600 | [diff] [blame] | 2351 | err = hpsa_ioctl(dev, CCISS_BIG_PASSTHRU, (void *)p); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 2352 | if (err) |
| 2353 | return err; |
| 2354 | err |= copy_in_user(&arg32->error_info, &p->error_info, |
| 2355 | sizeof(arg32->error_info)); |
| 2356 | if (err) |
| 2357 | return -EFAULT; |
| 2358 | return err; |
| 2359 | } |
Stephen M. Cameron | 71fe75a | 2010-02-04 08:43:51 -0600 | [diff] [blame^] | 2360 | |
| 2361 | static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void *arg) |
| 2362 | { |
| 2363 | switch (cmd) { |
| 2364 | case CCISS_GETPCIINFO: |
| 2365 | case CCISS_GETINTINFO: |
| 2366 | case CCISS_SETINTINFO: |
| 2367 | case CCISS_GETNODENAME: |
| 2368 | case CCISS_SETNODENAME: |
| 2369 | case CCISS_GETHEARTBEAT: |
| 2370 | case CCISS_GETBUSTYPES: |
| 2371 | case CCISS_GETFIRMVER: |
| 2372 | case CCISS_GETDRIVVER: |
| 2373 | case CCISS_REVALIDVOLS: |
| 2374 | case CCISS_DEREGDISK: |
| 2375 | case CCISS_REGNEWDISK: |
| 2376 | case CCISS_REGNEWD: |
| 2377 | case CCISS_RESCANDISK: |
| 2378 | case CCISS_GETLUNINFO: |
| 2379 | return hpsa_ioctl(dev, cmd, arg); |
| 2380 | |
| 2381 | case CCISS_PASSTHRU32: |
| 2382 | return hpsa_ioctl32_passthru(dev, cmd, arg); |
| 2383 | case CCISS_BIG_PASSTHRU32: |
| 2384 | return hpsa_ioctl32_big_passthru(dev, cmd, arg); |
| 2385 | |
| 2386 | default: |
| 2387 | return -ENOIOCTLCMD; |
| 2388 | } |
| 2389 | } |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 2390 | #endif |
| 2391 | |
| 2392 | static int hpsa_getpciinfo_ioctl(struct ctlr_info *h, void __user *argp) |
| 2393 | { |
| 2394 | struct hpsa_pci_info pciinfo; |
| 2395 | |
| 2396 | if (!argp) |
| 2397 | return -EINVAL; |
| 2398 | pciinfo.domain = pci_domain_nr(h->pdev->bus); |
| 2399 | pciinfo.bus = h->pdev->bus->number; |
| 2400 | pciinfo.dev_fn = h->pdev->devfn; |
| 2401 | pciinfo.board_id = h->board_id; |
| 2402 | if (copy_to_user(argp, &pciinfo, sizeof(pciinfo))) |
| 2403 | return -EFAULT; |
| 2404 | return 0; |
| 2405 | } |
| 2406 | |
| 2407 | static int hpsa_getdrivver_ioctl(struct ctlr_info *h, void __user *argp) |
| 2408 | { |
| 2409 | DriverVer_type DriverVer; |
| 2410 | unsigned char vmaj, vmin, vsubmin; |
| 2411 | int rc; |
| 2412 | |
| 2413 | rc = sscanf(HPSA_DRIVER_VERSION, "%hhu.%hhu.%hhu", |
| 2414 | &vmaj, &vmin, &vsubmin); |
| 2415 | if (rc != 3) { |
| 2416 | dev_info(&h->pdev->dev, "driver version string '%s' " |
| 2417 | "unrecognized.", HPSA_DRIVER_VERSION); |
| 2418 | vmaj = 0; |
| 2419 | vmin = 0; |
| 2420 | vsubmin = 0; |
| 2421 | } |
| 2422 | DriverVer = (vmaj << 16) | (vmin << 8) | vsubmin; |
| 2423 | if (!argp) |
| 2424 | return -EINVAL; |
| 2425 | if (copy_to_user(argp, &DriverVer, sizeof(DriverVer_type))) |
| 2426 | return -EFAULT; |
| 2427 | return 0; |
| 2428 | } |
| 2429 | |
| 2430 | static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp) |
| 2431 | { |
| 2432 | IOCTL_Command_struct iocommand; |
| 2433 | struct CommandList *c; |
| 2434 | char *buff = NULL; |
| 2435 | union u64bit temp64; |
| 2436 | |
| 2437 | if (!argp) |
| 2438 | return -EINVAL; |
| 2439 | if (!capable(CAP_SYS_RAWIO)) |
| 2440 | return -EPERM; |
| 2441 | if (copy_from_user(&iocommand, argp, sizeof(iocommand))) |
| 2442 | return -EFAULT; |
| 2443 | if ((iocommand.buf_size < 1) && |
| 2444 | (iocommand.Request.Type.Direction != XFER_NONE)) { |
| 2445 | return -EINVAL; |
| 2446 | } |
| 2447 | if (iocommand.buf_size > 0) { |
| 2448 | buff = kmalloc(iocommand.buf_size, GFP_KERNEL); |
| 2449 | if (buff == NULL) |
| 2450 | return -EFAULT; |
| 2451 | } |
| 2452 | if (iocommand.Request.Type.Direction == XFER_WRITE) { |
| 2453 | /* Copy the data into the buffer we created */ |
| 2454 | if (copy_from_user(buff, iocommand.buf, iocommand.buf_size)) { |
| 2455 | kfree(buff); |
| 2456 | return -EFAULT; |
| 2457 | } |
| 2458 | } else |
| 2459 | memset(buff, 0, iocommand.buf_size); |
| 2460 | c = cmd_special_alloc(h); |
| 2461 | if (c == NULL) { |
| 2462 | kfree(buff); |
| 2463 | return -ENOMEM; |
| 2464 | } |
| 2465 | /* Fill in the command type */ |
| 2466 | c->cmd_type = CMD_IOCTL_PEND; |
| 2467 | /* Fill in Command Header */ |
| 2468 | c->Header.ReplyQueue = 0; /* unused in simple mode */ |
| 2469 | if (iocommand.buf_size > 0) { /* buffer to fill */ |
| 2470 | c->Header.SGList = 1; |
| 2471 | c->Header.SGTotal = 1; |
| 2472 | } else { /* no buffers to fill */ |
| 2473 | c->Header.SGList = 0; |
| 2474 | c->Header.SGTotal = 0; |
| 2475 | } |
| 2476 | memcpy(&c->Header.LUN, &iocommand.LUN_info, sizeof(c->Header.LUN)); |
| 2477 | /* use the kernel address the cmd block for tag */ |
| 2478 | c->Header.Tag.lower = c->busaddr; |
| 2479 | |
| 2480 | /* Fill in Request block */ |
| 2481 | memcpy(&c->Request, &iocommand.Request, |
| 2482 | sizeof(c->Request)); |
| 2483 | |
| 2484 | /* Fill in the scatter gather information */ |
| 2485 | if (iocommand.buf_size > 0) { |
| 2486 | temp64.val = pci_map_single(h->pdev, buff, |
| 2487 | iocommand.buf_size, PCI_DMA_BIDIRECTIONAL); |
| 2488 | c->SG[0].Addr.lower = temp64.val32.lower; |
| 2489 | c->SG[0].Addr.upper = temp64.val32.upper; |
| 2490 | c->SG[0].Len = iocommand.buf_size; |
| 2491 | c->SG[0].Ext = 0; /* we are not chaining*/ |
| 2492 | } |
| 2493 | hpsa_scsi_do_simple_cmd_core(h, c); |
| 2494 | hpsa_pci_unmap(h->pdev, c, 1, PCI_DMA_BIDIRECTIONAL); |
| 2495 | check_ioctl_unit_attention(h, c); |
| 2496 | |
| 2497 | /* Copy the error information out */ |
| 2498 | memcpy(&iocommand.error_info, c->err_info, |
| 2499 | sizeof(iocommand.error_info)); |
| 2500 | if (copy_to_user(argp, &iocommand, sizeof(iocommand))) { |
| 2501 | kfree(buff); |
| 2502 | cmd_special_free(h, c); |
| 2503 | return -EFAULT; |
| 2504 | } |
| 2505 | |
| 2506 | if (iocommand.Request.Type.Direction == XFER_READ) { |
| 2507 | /* Copy the data out of the buffer we created */ |
| 2508 | if (copy_to_user(iocommand.buf, buff, iocommand.buf_size)) { |
| 2509 | kfree(buff); |
| 2510 | cmd_special_free(h, c); |
| 2511 | return -EFAULT; |
| 2512 | } |
| 2513 | } |
| 2514 | kfree(buff); |
| 2515 | cmd_special_free(h, c); |
| 2516 | return 0; |
| 2517 | } |
| 2518 | |
| 2519 | static int hpsa_big_passthru_ioctl(struct ctlr_info *h, void __user *argp) |
| 2520 | { |
| 2521 | BIG_IOCTL_Command_struct *ioc; |
| 2522 | struct CommandList *c; |
| 2523 | unsigned char **buff = NULL; |
| 2524 | int *buff_size = NULL; |
| 2525 | union u64bit temp64; |
| 2526 | BYTE sg_used = 0; |
| 2527 | int status = 0; |
| 2528 | int i; |
Stephen M. Cameron | 01a02ff | 2010-02-04 08:41:33 -0600 | [diff] [blame] | 2529 | u32 left; |
| 2530 | u32 sz; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 2531 | BYTE __user *data_ptr; |
| 2532 | |
| 2533 | if (!argp) |
| 2534 | return -EINVAL; |
| 2535 | if (!capable(CAP_SYS_RAWIO)) |
| 2536 | return -EPERM; |
| 2537 | ioc = (BIG_IOCTL_Command_struct *) |
| 2538 | kmalloc(sizeof(*ioc), GFP_KERNEL); |
| 2539 | if (!ioc) { |
| 2540 | status = -ENOMEM; |
| 2541 | goto cleanup1; |
| 2542 | } |
| 2543 | if (copy_from_user(ioc, argp, sizeof(*ioc))) { |
| 2544 | status = -EFAULT; |
| 2545 | goto cleanup1; |
| 2546 | } |
| 2547 | if ((ioc->buf_size < 1) && |
| 2548 | (ioc->Request.Type.Direction != XFER_NONE)) { |
| 2549 | status = -EINVAL; |
| 2550 | goto cleanup1; |
| 2551 | } |
| 2552 | /* Check kmalloc limits using all SGs */ |
| 2553 | if (ioc->malloc_size > MAX_KMALLOC_SIZE) { |
| 2554 | status = -EINVAL; |
| 2555 | goto cleanup1; |
| 2556 | } |
| 2557 | if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) { |
| 2558 | status = -EINVAL; |
| 2559 | goto cleanup1; |
| 2560 | } |
| 2561 | buff = kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL); |
| 2562 | if (!buff) { |
| 2563 | status = -ENOMEM; |
| 2564 | goto cleanup1; |
| 2565 | } |
| 2566 | buff_size = kmalloc(MAXSGENTRIES * sizeof(int), GFP_KERNEL); |
| 2567 | if (!buff_size) { |
| 2568 | status = -ENOMEM; |
| 2569 | goto cleanup1; |
| 2570 | } |
| 2571 | left = ioc->buf_size; |
| 2572 | data_ptr = ioc->buf; |
| 2573 | while (left) { |
| 2574 | sz = (left > ioc->malloc_size) ? ioc->malloc_size : left; |
| 2575 | buff_size[sg_used] = sz; |
| 2576 | buff[sg_used] = kmalloc(sz, GFP_KERNEL); |
| 2577 | if (buff[sg_used] == NULL) { |
| 2578 | status = -ENOMEM; |
| 2579 | goto cleanup1; |
| 2580 | } |
| 2581 | if (ioc->Request.Type.Direction == XFER_WRITE) { |
| 2582 | if (copy_from_user(buff[sg_used], data_ptr, sz)) { |
| 2583 | status = -ENOMEM; |
| 2584 | goto cleanup1; |
| 2585 | } |
| 2586 | } else |
| 2587 | memset(buff[sg_used], 0, sz); |
| 2588 | left -= sz; |
| 2589 | data_ptr += sz; |
| 2590 | sg_used++; |
| 2591 | } |
| 2592 | c = cmd_special_alloc(h); |
| 2593 | if (c == NULL) { |
| 2594 | status = -ENOMEM; |
| 2595 | goto cleanup1; |
| 2596 | } |
| 2597 | c->cmd_type = CMD_IOCTL_PEND; |
| 2598 | c->Header.ReplyQueue = 0; |
| 2599 | |
| 2600 | if (ioc->buf_size > 0) { |
| 2601 | c->Header.SGList = sg_used; |
| 2602 | c->Header.SGTotal = sg_used; |
| 2603 | } else { |
| 2604 | c->Header.SGList = 0; |
| 2605 | c->Header.SGTotal = 0; |
| 2606 | } |
| 2607 | memcpy(&c->Header.LUN, &ioc->LUN_info, sizeof(c->Header.LUN)); |
| 2608 | c->Header.Tag.lower = c->busaddr; |
| 2609 | memcpy(&c->Request, &ioc->Request, sizeof(c->Request)); |
| 2610 | if (ioc->buf_size > 0) { |
| 2611 | int i; |
| 2612 | for (i = 0; i < sg_used; i++) { |
| 2613 | temp64.val = pci_map_single(h->pdev, buff[i], |
| 2614 | buff_size[i], PCI_DMA_BIDIRECTIONAL); |
| 2615 | c->SG[i].Addr.lower = temp64.val32.lower; |
| 2616 | c->SG[i].Addr.upper = temp64.val32.upper; |
| 2617 | c->SG[i].Len = buff_size[i]; |
| 2618 | /* we are not chaining */ |
| 2619 | c->SG[i].Ext = 0; |
| 2620 | } |
| 2621 | } |
| 2622 | hpsa_scsi_do_simple_cmd_core(h, c); |
| 2623 | hpsa_pci_unmap(h->pdev, c, sg_used, PCI_DMA_BIDIRECTIONAL); |
| 2624 | check_ioctl_unit_attention(h, c); |
| 2625 | /* Copy the error information out */ |
| 2626 | memcpy(&ioc->error_info, c->err_info, sizeof(ioc->error_info)); |
| 2627 | if (copy_to_user(argp, ioc, sizeof(*ioc))) { |
| 2628 | cmd_special_free(h, c); |
| 2629 | status = -EFAULT; |
| 2630 | goto cleanup1; |
| 2631 | } |
| 2632 | if (ioc->Request.Type.Direction == XFER_READ) { |
| 2633 | /* Copy the data out of the buffer we created */ |
| 2634 | BYTE __user *ptr = ioc->buf; |
| 2635 | for (i = 0; i < sg_used; i++) { |
| 2636 | if (copy_to_user(ptr, buff[i], buff_size[i])) { |
| 2637 | cmd_special_free(h, c); |
| 2638 | status = -EFAULT; |
| 2639 | goto cleanup1; |
| 2640 | } |
| 2641 | ptr += buff_size[i]; |
| 2642 | } |
| 2643 | } |
| 2644 | cmd_special_free(h, c); |
| 2645 | status = 0; |
| 2646 | cleanup1: |
| 2647 | if (buff) { |
| 2648 | for (i = 0; i < sg_used; i++) |
| 2649 | kfree(buff[i]); |
| 2650 | kfree(buff); |
| 2651 | } |
| 2652 | kfree(buff_size); |
| 2653 | kfree(ioc); |
| 2654 | return status; |
| 2655 | } |
| 2656 | |
| 2657 | static void check_ioctl_unit_attention(struct ctlr_info *h, |
| 2658 | struct CommandList *c) |
| 2659 | { |
| 2660 | if (c->err_info->CommandStatus == CMD_TARGET_STATUS && |
| 2661 | c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) |
| 2662 | (void) check_for_unit_attention(h, c); |
| 2663 | } |
| 2664 | /* |
| 2665 | * ioctl |
| 2666 | */ |
| 2667 | static int hpsa_ioctl(struct scsi_device *dev, int cmd, void *arg) |
| 2668 | { |
| 2669 | struct ctlr_info *h; |
| 2670 | void __user *argp = (void __user *)arg; |
| 2671 | |
| 2672 | h = sdev_to_hba(dev); |
| 2673 | |
| 2674 | switch (cmd) { |
| 2675 | case CCISS_DEREGDISK: |
| 2676 | case CCISS_REGNEWDISK: |
| 2677 | case CCISS_REGNEWD: |
Stephen M. Cameron | a08a847 | 2010-02-04 08:43:16 -0600 | [diff] [blame] | 2678 | hpsa_scan_start(h->scsi_host); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 2679 | return 0; |
| 2680 | case CCISS_GETPCIINFO: |
| 2681 | return hpsa_getpciinfo_ioctl(h, argp); |
| 2682 | case CCISS_GETDRIVVER: |
| 2683 | return hpsa_getdrivver_ioctl(h, argp); |
| 2684 | case CCISS_PASSTHRU: |
| 2685 | return hpsa_passthru_ioctl(h, argp); |
| 2686 | case CCISS_BIG_PASSTHRU: |
| 2687 | return hpsa_big_passthru_ioctl(h, argp); |
| 2688 | default: |
| 2689 | return -ENOTTY; |
| 2690 | } |
| 2691 | } |
| 2692 | |
Stephen M. Cameron | 01a02ff | 2010-02-04 08:41:33 -0600 | [diff] [blame] | 2693 | static void fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h, |
| 2694 | void *buff, size_t size, u8 page_code, unsigned char *scsi3addr, |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 2695 | int cmd_type) |
| 2696 | { |
| 2697 | int pci_dir = XFER_NONE; |
| 2698 | |
| 2699 | c->cmd_type = CMD_IOCTL_PEND; |
| 2700 | c->Header.ReplyQueue = 0; |
| 2701 | if (buff != NULL && size > 0) { |
| 2702 | c->Header.SGList = 1; |
| 2703 | c->Header.SGTotal = 1; |
| 2704 | } else { |
| 2705 | c->Header.SGList = 0; |
| 2706 | c->Header.SGTotal = 0; |
| 2707 | } |
| 2708 | c->Header.Tag.lower = c->busaddr; |
| 2709 | memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8); |
| 2710 | |
| 2711 | c->Request.Type.Type = cmd_type; |
| 2712 | if (cmd_type == TYPE_CMD) { |
| 2713 | switch (cmd) { |
| 2714 | case HPSA_INQUIRY: |
| 2715 | /* are we trying to read a vital product page */ |
| 2716 | if (page_code != 0) { |
| 2717 | c->Request.CDB[1] = 0x01; |
| 2718 | c->Request.CDB[2] = page_code; |
| 2719 | } |
| 2720 | c->Request.CDBLen = 6; |
| 2721 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2722 | c->Request.Type.Direction = XFER_READ; |
| 2723 | c->Request.Timeout = 0; |
| 2724 | c->Request.CDB[0] = HPSA_INQUIRY; |
| 2725 | c->Request.CDB[4] = size & 0xFF; |
| 2726 | break; |
| 2727 | case HPSA_REPORT_LOG: |
| 2728 | case HPSA_REPORT_PHYS: |
| 2729 | /* Talking to controller so It's a physical command |
| 2730 | mode = 00 target = 0. Nothing to write. |
| 2731 | */ |
| 2732 | c->Request.CDBLen = 12; |
| 2733 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2734 | c->Request.Type.Direction = XFER_READ; |
| 2735 | c->Request.Timeout = 0; |
| 2736 | c->Request.CDB[0] = cmd; |
| 2737 | c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */ |
| 2738 | c->Request.CDB[7] = (size >> 16) & 0xFF; |
| 2739 | c->Request.CDB[8] = (size >> 8) & 0xFF; |
| 2740 | c->Request.CDB[9] = size & 0xFF; |
| 2741 | break; |
| 2742 | |
| 2743 | case HPSA_READ_CAPACITY: |
| 2744 | c->Request.CDBLen = 10; |
| 2745 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2746 | c->Request.Type.Direction = XFER_READ; |
| 2747 | c->Request.Timeout = 0; |
| 2748 | c->Request.CDB[0] = cmd; |
| 2749 | break; |
| 2750 | case HPSA_CACHE_FLUSH: |
| 2751 | c->Request.CDBLen = 12; |
| 2752 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2753 | c->Request.Type.Direction = XFER_WRITE; |
| 2754 | c->Request.Timeout = 0; |
| 2755 | c->Request.CDB[0] = BMIC_WRITE; |
| 2756 | c->Request.CDB[6] = BMIC_CACHE_FLUSH; |
| 2757 | break; |
| 2758 | case TEST_UNIT_READY: |
| 2759 | c->Request.CDBLen = 6; |
| 2760 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2761 | c->Request.Type.Direction = XFER_NONE; |
| 2762 | c->Request.Timeout = 0; |
| 2763 | break; |
| 2764 | default: |
| 2765 | dev_warn(&h->pdev->dev, "unknown command 0x%c\n", cmd); |
| 2766 | BUG(); |
| 2767 | return; |
| 2768 | } |
| 2769 | } else if (cmd_type == TYPE_MSG) { |
| 2770 | switch (cmd) { |
| 2771 | |
| 2772 | case HPSA_DEVICE_RESET_MSG: |
| 2773 | c->Request.CDBLen = 16; |
| 2774 | c->Request.Type.Type = 1; /* It is a MSG not a CMD */ |
| 2775 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2776 | c->Request.Type.Direction = XFER_NONE; |
| 2777 | c->Request.Timeout = 0; /* Don't time out */ |
| 2778 | c->Request.CDB[0] = 0x01; /* RESET_MSG is 0x01 */ |
| 2779 | c->Request.CDB[1] = 0x03; /* Reset target above */ |
| 2780 | /* If bytes 4-7 are zero, it means reset the */ |
| 2781 | /* LunID device */ |
| 2782 | c->Request.CDB[4] = 0x00; |
| 2783 | c->Request.CDB[5] = 0x00; |
| 2784 | c->Request.CDB[6] = 0x00; |
| 2785 | c->Request.CDB[7] = 0x00; |
| 2786 | break; |
| 2787 | |
| 2788 | default: |
| 2789 | dev_warn(&h->pdev->dev, "unknown message type %d\n", |
| 2790 | cmd); |
| 2791 | BUG(); |
| 2792 | } |
| 2793 | } else { |
| 2794 | dev_warn(&h->pdev->dev, "unknown command type %d\n", cmd_type); |
| 2795 | BUG(); |
| 2796 | } |
| 2797 | |
| 2798 | switch (c->Request.Type.Direction) { |
| 2799 | case XFER_READ: |
| 2800 | pci_dir = PCI_DMA_FROMDEVICE; |
| 2801 | break; |
| 2802 | case XFER_WRITE: |
| 2803 | pci_dir = PCI_DMA_TODEVICE; |
| 2804 | break; |
| 2805 | case XFER_NONE: |
| 2806 | pci_dir = PCI_DMA_NONE; |
| 2807 | break; |
| 2808 | default: |
| 2809 | pci_dir = PCI_DMA_BIDIRECTIONAL; |
| 2810 | } |
| 2811 | |
| 2812 | hpsa_map_one(h->pdev, c, buff, size, pci_dir); |
| 2813 | |
| 2814 | return; |
| 2815 | } |
| 2816 | |
| 2817 | /* |
| 2818 | * Map (physical) PCI mem into (virtual) kernel space |
| 2819 | */ |
| 2820 | static void __iomem *remap_pci_mem(ulong base, ulong size) |
| 2821 | { |
| 2822 | ulong page_base = ((ulong) base) & PAGE_MASK; |
| 2823 | ulong page_offs = ((ulong) base) - page_base; |
| 2824 | void __iomem *page_remapped = ioremap(page_base, page_offs + size); |
| 2825 | |
| 2826 | return page_remapped ? (page_remapped + page_offs) : NULL; |
| 2827 | } |
| 2828 | |
| 2829 | /* Takes cmds off the submission queue and sends them to the hardware, |
| 2830 | * then puts them on the queue of cmds waiting for completion. |
| 2831 | */ |
| 2832 | static void start_io(struct ctlr_info *h) |
| 2833 | { |
| 2834 | struct CommandList *c; |
| 2835 | |
| 2836 | while (!hlist_empty(&h->reqQ)) { |
| 2837 | c = hlist_entry(h->reqQ.first, struct CommandList, list); |
| 2838 | /* can't do anything if fifo is full */ |
| 2839 | if ((h->access.fifo_full(h))) { |
| 2840 | dev_warn(&h->pdev->dev, "fifo full\n"); |
| 2841 | break; |
| 2842 | } |
| 2843 | |
| 2844 | /* Get the first entry from the Request Q */ |
| 2845 | removeQ(c); |
| 2846 | h->Qdepth--; |
| 2847 | |
| 2848 | /* Tell the controller execute command */ |
| 2849 | h->access.submit_command(h, c); |
| 2850 | |
| 2851 | /* Put job onto the completed Q */ |
| 2852 | addQ(&h->cmpQ, c); |
| 2853 | } |
| 2854 | } |
| 2855 | |
| 2856 | static inline unsigned long get_next_completion(struct ctlr_info *h) |
| 2857 | { |
| 2858 | return h->access.command_completed(h); |
| 2859 | } |
| 2860 | |
Stephen M. Cameron | 900c544 | 2010-02-04 08:42:35 -0600 | [diff] [blame] | 2861 | static inline bool interrupt_pending(struct ctlr_info *h) |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 2862 | { |
| 2863 | return h->access.intr_pending(h); |
| 2864 | } |
| 2865 | |
| 2866 | static inline long interrupt_not_for_us(struct ctlr_info *h) |
| 2867 | { |
Don Brace | 303932f | 2010-02-04 08:42:40 -0600 | [diff] [blame] | 2868 | return !(h->msi_vector || h->msix_vector) && |
| 2869 | ((h->access.intr_pending(h) == 0) || |
| 2870 | (h->interrupts_enabled == 0)); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 2871 | } |
| 2872 | |
Stephen M. Cameron | 01a02ff | 2010-02-04 08:41:33 -0600 | [diff] [blame] | 2873 | static inline int bad_tag(struct ctlr_info *h, u32 tag_index, |
| 2874 | u32 raw_tag) |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 2875 | { |
| 2876 | if (unlikely(tag_index >= h->nr_cmds)) { |
| 2877 | dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag); |
| 2878 | return 1; |
| 2879 | } |
| 2880 | return 0; |
| 2881 | } |
| 2882 | |
Stephen M. Cameron | 01a02ff | 2010-02-04 08:41:33 -0600 | [diff] [blame] | 2883 | static inline void finish_cmd(struct CommandList *c, u32 raw_tag) |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 2884 | { |
| 2885 | removeQ(c); |
| 2886 | if (likely(c->cmd_type == CMD_SCSI)) |
| 2887 | complete_scsi_command(c, 0, raw_tag); |
| 2888 | else if (c->cmd_type == CMD_IOCTL_PEND) |
| 2889 | complete(c->waiting); |
| 2890 | } |
| 2891 | |
Stephen M. Cameron | a104c99 | 2010-02-04 08:42:24 -0600 | [diff] [blame] | 2892 | static inline u32 hpsa_tag_contains_index(u32 tag) |
| 2893 | { |
Don Brace | 303932f | 2010-02-04 08:42:40 -0600 | [diff] [blame] | 2894 | #define DIRECT_LOOKUP_BIT 0x10 |
Stephen M. Cameron | a104c99 | 2010-02-04 08:42:24 -0600 | [diff] [blame] | 2895 | return tag & DIRECT_LOOKUP_BIT; |
| 2896 | } |
| 2897 | |
| 2898 | static inline u32 hpsa_tag_to_index(u32 tag) |
| 2899 | { |
Don Brace | 303932f | 2010-02-04 08:42:40 -0600 | [diff] [blame] | 2900 | #define DIRECT_LOOKUP_SHIFT 5 |
Stephen M. Cameron | a104c99 | 2010-02-04 08:42:24 -0600 | [diff] [blame] | 2901 | return tag >> DIRECT_LOOKUP_SHIFT; |
| 2902 | } |
| 2903 | |
| 2904 | static inline u32 hpsa_tag_discard_error_bits(u32 tag) |
| 2905 | { |
| 2906 | #define HPSA_ERROR_BITS 0x03 |
| 2907 | return tag & ~HPSA_ERROR_BITS; |
| 2908 | } |
| 2909 | |
Don Brace | 303932f | 2010-02-04 08:42:40 -0600 | [diff] [blame] | 2910 | /* process completion of an indexed ("direct lookup") command */ |
| 2911 | static inline u32 process_indexed_cmd(struct ctlr_info *h, |
| 2912 | u32 raw_tag) |
| 2913 | { |
| 2914 | u32 tag_index; |
| 2915 | struct CommandList *c; |
| 2916 | |
| 2917 | tag_index = hpsa_tag_to_index(raw_tag); |
| 2918 | if (bad_tag(h, tag_index, raw_tag)) |
| 2919 | return next_command(h); |
| 2920 | c = h->cmd_pool + tag_index; |
| 2921 | finish_cmd(c, raw_tag); |
| 2922 | return next_command(h); |
| 2923 | } |
| 2924 | |
| 2925 | /* process completion of a non-indexed command */ |
| 2926 | static inline u32 process_nonindexed_cmd(struct ctlr_info *h, |
| 2927 | u32 raw_tag) |
| 2928 | { |
| 2929 | u32 tag; |
| 2930 | struct CommandList *c = NULL; |
| 2931 | struct hlist_node *tmp; |
| 2932 | |
| 2933 | tag = hpsa_tag_discard_error_bits(raw_tag); |
| 2934 | hlist_for_each_entry(c, tmp, &h->cmpQ, list) { |
| 2935 | if ((c->busaddr & 0xFFFFFFE0) == (tag & 0xFFFFFFE0)) { |
| 2936 | finish_cmd(c, raw_tag); |
| 2937 | return next_command(h); |
| 2938 | } |
| 2939 | } |
| 2940 | bad_tag(h, h->nr_cmds + 1, raw_tag); |
| 2941 | return next_command(h); |
| 2942 | } |
| 2943 | |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 2944 | static irqreturn_t do_hpsa_intr(int irq, void *dev_id) |
| 2945 | { |
| 2946 | struct ctlr_info *h = dev_id; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 2947 | unsigned long flags; |
Don Brace | 303932f | 2010-02-04 08:42:40 -0600 | [diff] [blame] | 2948 | u32 raw_tag; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 2949 | |
| 2950 | if (interrupt_not_for_us(h)) |
| 2951 | return IRQ_NONE; |
| 2952 | spin_lock_irqsave(&h->lock, flags); |
Don Brace | 303932f | 2010-02-04 08:42:40 -0600 | [diff] [blame] | 2953 | raw_tag = get_next_completion(h); |
| 2954 | while (raw_tag != FIFO_EMPTY) { |
| 2955 | if (hpsa_tag_contains_index(raw_tag)) |
| 2956 | raw_tag = process_indexed_cmd(h, raw_tag); |
| 2957 | else |
| 2958 | raw_tag = process_nonindexed_cmd(h, raw_tag); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 2959 | } |
| 2960 | spin_unlock_irqrestore(&h->lock, flags); |
| 2961 | return IRQ_HANDLED; |
| 2962 | } |
| 2963 | |
Don Brace | 303932f | 2010-02-04 08:42:40 -0600 | [diff] [blame] | 2964 | /* Send a message CDB to the firmwart. */ |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 2965 | static __devinit int hpsa_message(struct pci_dev *pdev, unsigned char opcode, |
| 2966 | unsigned char type) |
| 2967 | { |
| 2968 | struct Command { |
| 2969 | struct CommandListHeader CommandHeader; |
| 2970 | struct RequestBlock Request; |
| 2971 | struct ErrDescriptor ErrorDescriptor; |
| 2972 | }; |
| 2973 | struct Command *cmd; |
| 2974 | static const size_t cmd_sz = sizeof(*cmd) + |
| 2975 | sizeof(cmd->ErrorDescriptor); |
| 2976 | dma_addr_t paddr64; |
| 2977 | uint32_t paddr32, tag; |
| 2978 | void __iomem *vaddr; |
| 2979 | int i, err; |
| 2980 | |
| 2981 | vaddr = pci_ioremap_bar(pdev, 0); |
| 2982 | if (vaddr == NULL) |
| 2983 | return -ENOMEM; |
| 2984 | |
| 2985 | /* The Inbound Post Queue only accepts 32-bit physical addresses for the |
| 2986 | * CCISS commands, so they must be allocated from the lower 4GiB of |
| 2987 | * memory. |
| 2988 | */ |
| 2989 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
| 2990 | if (err) { |
| 2991 | iounmap(vaddr); |
| 2992 | return -ENOMEM; |
| 2993 | } |
| 2994 | |
| 2995 | cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64); |
| 2996 | if (cmd == NULL) { |
| 2997 | iounmap(vaddr); |
| 2998 | return -ENOMEM; |
| 2999 | } |
| 3000 | |
| 3001 | /* This must fit, because of the 32-bit consistent DMA mask. Also, |
| 3002 | * although there's no guarantee, we assume that the address is at |
| 3003 | * least 4-byte aligned (most likely, it's page-aligned). |
| 3004 | */ |
| 3005 | paddr32 = paddr64; |
| 3006 | |
| 3007 | cmd->CommandHeader.ReplyQueue = 0; |
| 3008 | cmd->CommandHeader.SGList = 0; |
| 3009 | cmd->CommandHeader.SGTotal = 0; |
| 3010 | cmd->CommandHeader.Tag.lower = paddr32; |
| 3011 | cmd->CommandHeader.Tag.upper = 0; |
| 3012 | memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8); |
| 3013 | |
| 3014 | cmd->Request.CDBLen = 16; |
| 3015 | cmd->Request.Type.Type = TYPE_MSG; |
| 3016 | cmd->Request.Type.Attribute = ATTR_HEADOFQUEUE; |
| 3017 | cmd->Request.Type.Direction = XFER_NONE; |
| 3018 | cmd->Request.Timeout = 0; /* Don't time out */ |
| 3019 | cmd->Request.CDB[0] = opcode; |
| 3020 | cmd->Request.CDB[1] = type; |
| 3021 | memset(&cmd->Request.CDB[2], 0, 14); /* rest of the CDB is reserved */ |
| 3022 | cmd->ErrorDescriptor.Addr.lower = paddr32 + sizeof(*cmd); |
| 3023 | cmd->ErrorDescriptor.Addr.upper = 0; |
| 3024 | cmd->ErrorDescriptor.Len = sizeof(struct ErrorInfo); |
| 3025 | |
| 3026 | writel(paddr32, vaddr + SA5_REQUEST_PORT_OFFSET); |
| 3027 | |
| 3028 | for (i = 0; i < HPSA_MSG_SEND_RETRY_LIMIT; i++) { |
| 3029 | tag = readl(vaddr + SA5_REPLY_PORT_OFFSET); |
Stephen M. Cameron | a104c99 | 2010-02-04 08:42:24 -0600 | [diff] [blame] | 3030 | if (hpsa_tag_discard_error_bits(tag) == paddr32) |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 3031 | break; |
| 3032 | msleep(HPSA_MSG_SEND_RETRY_INTERVAL_MSECS); |
| 3033 | } |
| 3034 | |
| 3035 | iounmap(vaddr); |
| 3036 | |
| 3037 | /* we leak the DMA buffer here ... no choice since the controller could |
| 3038 | * still complete the command. |
| 3039 | */ |
| 3040 | if (i == HPSA_MSG_SEND_RETRY_LIMIT) { |
| 3041 | dev_err(&pdev->dev, "controller message %02x:%02x timed out\n", |
| 3042 | opcode, type); |
| 3043 | return -ETIMEDOUT; |
| 3044 | } |
| 3045 | |
| 3046 | pci_free_consistent(pdev, cmd_sz, cmd, paddr64); |
| 3047 | |
| 3048 | if (tag & HPSA_ERROR_BIT) { |
| 3049 | dev_err(&pdev->dev, "controller message %02x:%02x failed\n", |
| 3050 | opcode, type); |
| 3051 | return -EIO; |
| 3052 | } |
| 3053 | |
| 3054 | dev_info(&pdev->dev, "controller message %02x:%02x succeeded\n", |
| 3055 | opcode, type); |
| 3056 | return 0; |
| 3057 | } |
| 3058 | |
| 3059 | #define hpsa_soft_reset_controller(p) hpsa_message(p, 1, 0) |
| 3060 | #define hpsa_noop(p) hpsa_message(p, 3, 0) |
| 3061 | |
| 3062 | static __devinit int hpsa_reset_msi(struct pci_dev *pdev) |
| 3063 | { |
| 3064 | /* the #defines are stolen from drivers/pci/msi.h. */ |
| 3065 | #define msi_control_reg(base) (base + PCI_MSI_FLAGS) |
| 3066 | #define PCI_MSIX_FLAGS_ENABLE (1 << 15) |
| 3067 | |
| 3068 | int pos; |
| 3069 | u16 control = 0; |
| 3070 | |
| 3071 | pos = pci_find_capability(pdev, PCI_CAP_ID_MSI); |
| 3072 | if (pos) { |
| 3073 | pci_read_config_word(pdev, msi_control_reg(pos), &control); |
| 3074 | if (control & PCI_MSI_FLAGS_ENABLE) { |
| 3075 | dev_info(&pdev->dev, "resetting MSI\n"); |
| 3076 | pci_write_config_word(pdev, msi_control_reg(pos), |
| 3077 | control & ~PCI_MSI_FLAGS_ENABLE); |
| 3078 | } |
| 3079 | } |
| 3080 | |
| 3081 | pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); |
| 3082 | if (pos) { |
| 3083 | pci_read_config_word(pdev, msi_control_reg(pos), &control); |
| 3084 | if (control & PCI_MSIX_FLAGS_ENABLE) { |
| 3085 | dev_info(&pdev->dev, "resetting MSI-X\n"); |
| 3086 | pci_write_config_word(pdev, msi_control_reg(pos), |
| 3087 | control & ~PCI_MSIX_FLAGS_ENABLE); |
| 3088 | } |
| 3089 | } |
| 3090 | |
| 3091 | return 0; |
| 3092 | } |
| 3093 | |
| 3094 | /* This does a hard reset of the controller using PCI power management |
| 3095 | * states. |
| 3096 | */ |
| 3097 | static __devinit int hpsa_hard_reset_controller(struct pci_dev *pdev) |
| 3098 | { |
| 3099 | u16 pmcsr, saved_config_space[32]; |
| 3100 | int i, pos; |
| 3101 | |
| 3102 | dev_info(&pdev->dev, "using PCI PM to reset controller\n"); |
| 3103 | |
| 3104 | /* This is very nearly the same thing as |
| 3105 | * |
| 3106 | * pci_save_state(pci_dev); |
| 3107 | * pci_set_power_state(pci_dev, PCI_D3hot); |
| 3108 | * pci_set_power_state(pci_dev, PCI_D0); |
| 3109 | * pci_restore_state(pci_dev); |
| 3110 | * |
| 3111 | * but we can't use these nice canned kernel routines on |
| 3112 | * kexec, because they also check the MSI/MSI-X state in PCI |
| 3113 | * configuration space and do the wrong thing when it is |
| 3114 | * set/cleared. Also, the pci_save/restore_state functions |
| 3115 | * violate the ordering requirements for restoring the |
| 3116 | * configuration space from the CCISS document (see the |
| 3117 | * comment below). So we roll our own .... |
| 3118 | */ |
| 3119 | |
| 3120 | for (i = 0; i < 32; i++) |
| 3121 | pci_read_config_word(pdev, 2*i, &saved_config_space[i]); |
| 3122 | |
| 3123 | pos = pci_find_capability(pdev, PCI_CAP_ID_PM); |
| 3124 | if (pos == 0) { |
| 3125 | dev_err(&pdev->dev, |
| 3126 | "hpsa_reset_controller: PCI PM not supported\n"); |
| 3127 | return -ENODEV; |
| 3128 | } |
| 3129 | |
| 3130 | /* Quoting from the Open CISS Specification: "The Power |
| 3131 | * Management Control/Status Register (CSR) controls the power |
| 3132 | * state of the device. The normal operating state is D0, |
| 3133 | * CSR=00h. The software off state is D3, CSR=03h. To reset |
| 3134 | * the controller, place the interface device in D3 then to |
| 3135 | * D0, this causes a secondary PCI reset which will reset the |
| 3136 | * controller." |
| 3137 | */ |
| 3138 | |
| 3139 | /* enter the D3hot power management state */ |
| 3140 | pci_read_config_word(pdev, pos + PCI_PM_CTRL, &pmcsr); |
| 3141 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; |
| 3142 | pmcsr |= PCI_D3hot; |
| 3143 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); |
| 3144 | |
| 3145 | msleep(500); |
| 3146 | |
| 3147 | /* enter the D0 power management state */ |
| 3148 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; |
| 3149 | pmcsr |= PCI_D0; |
| 3150 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); |
| 3151 | |
| 3152 | msleep(500); |
| 3153 | |
| 3154 | /* Restore the PCI configuration space. The Open CISS |
| 3155 | * Specification says, "Restore the PCI Configuration |
| 3156 | * Registers, offsets 00h through 60h. It is important to |
| 3157 | * restore the command register, 16-bits at offset 04h, |
| 3158 | * last. Do not restore the configuration status register, |
| 3159 | * 16-bits at offset 06h." Note that the offset is 2*i. |
| 3160 | */ |
| 3161 | for (i = 0; i < 32; i++) { |
| 3162 | if (i == 2 || i == 3) |
| 3163 | continue; |
| 3164 | pci_write_config_word(pdev, 2*i, saved_config_space[i]); |
| 3165 | } |
| 3166 | wmb(); |
| 3167 | pci_write_config_word(pdev, 4, saved_config_space[2]); |
| 3168 | |
| 3169 | return 0; |
| 3170 | } |
| 3171 | |
| 3172 | /* |
| 3173 | * We cannot read the structure directly, for portability we must use |
| 3174 | * the io functions. |
| 3175 | * This is for debug only. |
| 3176 | */ |
| 3177 | #ifdef HPSA_DEBUG |
| 3178 | static void print_cfg_table(struct device *dev, struct CfgTable *tb) |
| 3179 | { |
| 3180 | int i; |
| 3181 | char temp_name[17]; |
| 3182 | |
| 3183 | dev_info(dev, "Controller Configuration information\n"); |
| 3184 | dev_info(dev, "------------------------------------\n"); |
| 3185 | for (i = 0; i < 4; i++) |
| 3186 | temp_name[i] = readb(&(tb->Signature[i])); |
| 3187 | temp_name[4] = '\0'; |
| 3188 | dev_info(dev, " Signature = %s\n", temp_name); |
| 3189 | dev_info(dev, " Spec Number = %d\n", readl(&(tb->SpecValence))); |
| 3190 | dev_info(dev, " Transport methods supported = 0x%x\n", |
| 3191 | readl(&(tb->TransportSupport))); |
| 3192 | dev_info(dev, " Transport methods active = 0x%x\n", |
| 3193 | readl(&(tb->TransportActive))); |
| 3194 | dev_info(dev, " Requested transport Method = 0x%x\n", |
| 3195 | readl(&(tb->HostWrite.TransportRequest))); |
| 3196 | dev_info(dev, " Coalesce Interrupt Delay = 0x%x\n", |
| 3197 | readl(&(tb->HostWrite.CoalIntDelay))); |
| 3198 | dev_info(dev, " Coalesce Interrupt Count = 0x%x\n", |
| 3199 | readl(&(tb->HostWrite.CoalIntCount))); |
| 3200 | dev_info(dev, " Max outstanding commands = 0x%d\n", |
| 3201 | readl(&(tb->CmdsOutMax))); |
| 3202 | dev_info(dev, " Bus Types = 0x%x\n", readl(&(tb->BusTypes))); |
| 3203 | for (i = 0; i < 16; i++) |
| 3204 | temp_name[i] = readb(&(tb->ServerName[i])); |
| 3205 | temp_name[16] = '\0'; |
| 3206 | dev_info(dev, " Server Name = %s\n", temp_name); |
| 3207 | dev_info(dev, " Heartbeat Counter = 0x%x\n\n\n", |
| 3208 | readl(&(tb->HeartBeat))); |
| 3209 | } |
| 3210 | #endif /* HPSA_DEBUG */ |
| 3211 | |
| 3212 | static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr) |
| 3213 | { |
| 3214 | int i, offset, mem_type, bar_type; |
| 3215 | |
| 3216 | if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ |
| 3217 | return 0; |
| 3218 | offset = 0; |
| 3219 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { |
| 3220 | bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE; |
| 3221 | if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) |
| 3222 | offset += 4; |
| 3223 | else { |
| 3224 | mem_type = pci_resource_flags(pdev, i) & |
| 3225 | PCI_BASE_ADDRESS_MEM_TYPE_MASK; |
| 3226 | switch (mem_type) { |
| 3227 | case PCI_BASE_ADDRESS_MEM_TYPE_32: |
| 3228 | case PCI_BASE_ADDRESS_MEM_TYPE_1M: |
| 3229 | offset += 4; /* 32 bit */ |
| 3230 | break; |
| 3231 | case PCI_BASE_ADDRESS_MEM_TYPE_64: |
| 3232 | offset += 8; |
| 3233 | break; |
| 3234 | default: /* reserved in PCI 2.2 */ |
| 3235 | dev_warn(&pdev->dev, |
| 3236 | "base address is invalid\n"); |
| 3237 | return -1; |
| 3238 | break; |
| 3239 | } |
| 3240 | } |
| 3241 | if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) |
| 3242 | return i + 1; |
| 3243 | } |
| 3244 | return -1; |
| 3245 | } |
| 3246 | |
| 3247 | /* If MSI/MSI-X is supported by the kernel we will try to enable it on |
| 3248 | * controllers that are capable. If not, we use IO-APIC mode. |
| 3249 | */ |
| 3250 | |
| 3251 | static void __devinit hpsa_interrupt_mode(struct ctlr_info *h, |
Stephen M. Cameron | 01a02ff | 2010-02-04 08:41:33 -0600 | [diff] [blame] | 3252 | struct pci_dev *pdev, u32 board_id) |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 3253 | { |
| 3254 | #ifdef CONFIG_PCI_MSI |
| 3255 | int err; |
| 3256 | struct msix_entry hpsa_msix_entries[4] = { {0, 0}, {0, 1}, |
| 3257 | {0, 2}, {0, 3} |
| 3258 | }; |
| 3259 | |
| 3260 | /* Some boards advertise MSI but don't really support it */ |
| 3261 | if ((board_id == 0x40700E11) || |
| 3262 | (board_id == 0x40800E11) || |
| 3263 | (board_id == 0x40820E11) || (board_id == 0x40830E11)) |
| 3264 | goto default_int_mode; |
| 3265 | if (pci_find_capability(pdev, PCI_CAP_ID_MSIX)) { |
| 3266 | dev_info(&pdev->dev, "MSIX\n"); |
| 3267 | err = pci_enable_msix(pdev, hpsa_msix_entries, 4); |
| 3268 | if (!err) { |
| 3269 | h->intr[0] = hpsa_msix_entries[0].vector; |
| 3270 | h->intr[1] = hpsa_msix_entries[1].vector; |
| 3271 | h->intr[2] = hpsa_msix_entries[2].vector; |
| 3272 | h->intr[3] = hpsa_msix_entries[3].vector; |
| 3273 | h->msix_vector = 1; |
| 3274 | return; |
| 3275 | } |
| 3276 | if (err > 0) { |
| 3277 | dev_warn(&pdev->dev, "only %d MSI-X vectors " |
| 3278 | "available\n", err); |
| 3279 | goto default_int_mode; |
| 3280 | } else { |
| 3281 | dev_warn(&pdev->dev, "MSI-X init failed %d\n", |
| 3282 | err); |
| 3283 | goto default_int_mode; |
| 3284 | } |
| 3285 | } |
| 3286 | if (pci_find_capability(pdev, PCI_CAP_ID_MSI)) { |
| 3287 | dev_info(&pdev->dev, "MSI\n"); |
| 3288 | if (!pci_enable_msi(pdev)) |
| 3289 | h->msi_vector = 1; |
| 3290 | else |
| 3291 | dev_warn(&pdev->dev, "MSI init failed\n"); |
| 3292 | } |
| 3293 | default_int_mode: |
| 3294 | #endif /* CONFIG_PCI_MSI */ |
| 3295 | /* if we get here we're going to use the default interrupt mode */ |
Don Brace | 303932f | 2010-02-04 08:42:40 -0600 | [diff] [blame] | 3296 | h->intr[PERF_MODE_INT] = pdev->irq; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 3297 | } |
| 3298 | |
| 3299 | static int hpsa_pci_init(struct ctlr_info *h, struct pci_dev *pdev) |
| 3300 | { |
| 3301 | ushort subsystem_vendor_id, subsystem_device_id, command; |
Stephen M. Cameron | 01a02ff | 2010-02-04 08:41:33 -0600 | [diff] [blame] | 3302 | u32 board_id, scratchpad = 0; |
| 3303 | u64 cfg_offset; |
| 3304 | u32 cfg_base_addr; |
| 3305 | u64 cfg_base_addr_index; |
Don Brace | 303932f | 2010-02-04 08:42:40 -0600 | [diff] [blame] | 3306 | u32 trans_offset; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 3307 | int i, prod_index, err; |
| 3308 | |
| 3309 | subsystem_vendor_id = pdev->subsystem_vendor; |
| 3310 | subsystem_device_id = pdev->subsystem_device; |
Stephen M. Cameron | 01a02ff | 2010-02-04 08:41:33 -0600 | [diff] [blame] | 3311 | board_id = (((u32) (subsystem_device_id << 16) & 0xffff0000) | |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 3312 | subsystem_vendor_id); |
| 3313 | |
| 3314 | for (i = 0; i < ARRAY_SIZE(products); i++) |
| 3315 | if (board_id == products[i].board_id) |
| 3316 | break; |
| 3317 | |
| 3318 | prod_index = i; |
| 3319 | |
| 3320 | if (prod_index == ARRAY_SIZE(products)) { |
| 3321 | prod_index--; |
| 3322 | if (subsystem_vendor_id != PCI_VENDOR_ID_HP || |
| 3323 | !hpsa_allow_any) { |
| 3324 | dev_warn(&pdev->dev, "unrecognized board ID:" |
| 3325 | " 0x%08lx, ignoring.\n", |
| 3326 | (unsigned long) board_id); |
| 3327 | return -ENODEV; |
| 3328 | } |
| 3329 | } |
| 3330 | /* check to see if controller has been disabled |
| 3331 | * BEFORE trying to enable it |
| 3332 | */ |
| 3333 | (void)pci_read_config_word(pdev, PCI_COMMAND, &command); |
| 3334 | if (!(command & 0x02)) { |
| 3335 | dev_warn(&pdev->dev, "controller appears to be disabled\n"); |
| 3336 | return -ENODEV; |
| 3337 | } |
| 3338 | |
| 3339 | err = pci_enable_device(pdev); |
| 3340 | if (err) { |
| 3341 | dev_warn(&pdev->dev, "unable to enable PCI device\n"); |
| 3342 | return err; |
| 3343 | } |
| 3344 | |
| 3345 | err = pci_request_regions(pdev, "hpsa"); |
| 3346 | if (err) { |
| 3347 | dev_err(&pdev->dev, "cannot obtain PCI resources, aborting\n"); |
| 3348 | return err; |
| 3349 | } |
| 3350 | |
| 3351 | /* If the kernel supports MSI/MSI-X we will try to enable that, |
| 3352 | * else we use the IO-APIC interrupt assigned to us by system ROM. |
| 3353 | */ |
| 3354 | hpsa_interrupt_mode(h, pdev, board_id); |
| 3355 | |
| 3356 | /* find the memory BAR */ |
| 3357 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { |
| 3358 | if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) |
| 3359 | break; |
| 3360 | } |
| 3361 | if (i == DEVICE_COUNT_RESOURCE) { |
| 3362 | dev_warn(&pdev->dev, "no memory BAR found\n"); |
| 3363 | err = -ENODEV; |
| 3364 | goto err_out_free_res; |
| 3365 | } |
| 3366 | |
| 3367 | h->paddr = pci_resource_start(pdev, i); /* addressing mode bits |
| 3368 | * already removed |
| 3369 | */ |
| 3370 | |
| 3371 | h->vaddr = remap_pci_mem(h->paddr, 0x250); |
| 3372 | |
| 3373 | /* Wait for the board to become ready. */ |
| 3374 | for (i = 0; i < HPSA_BOARD_READY_ITERATIONS; i++) { |
| 3375 | scratchpad = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET); |
| 3376 | if (scratchpad == HPSA_FIRMWARE_READY) |
| 3377 | break; |
| 3378 | msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS); |
| 3379 | } |
| 3380 | if (scratchpad != HPSA_FIRMWARE_READY) { |
| 3381 | dev_warn(&pdev->dev, "board not ready, timed out.\n"); |
| 3382 | err = -ENODEV; |
| 3383 | goto err_out_free_res; |
| 3384 | } |
| 3385 | |
| 3386 | /* get the address index number */ |
| 3387 | cfg_base_addr = readl(h->vaddr + SA5_CTCFG_OFFSET); |
Stephen M. Cameron | 01a02ff | 2010-02-04 08:41:33 -0600 | [diff] [blame] | 3388 | cfg_base_addr &= (u32) 0x0000ffff; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 3389 | cfg_base_addr_index = find_PCI_BAR_index(pdev, cfg_base_addr); |
| 3390 | if (cfg_base_addr_index == -1) { |
| 3391 | dev_warn(&pdev->dev, "cannot find cfg_base_addr_index\n"); |
| 3392 | err = -ENODEV; |
| 3393 | goto err_out_free_res; |
| 3394 | } |
| 3395 | |
| 3396 | cfg_offset = readl(h->vaddr + SA5_CTMEM_OFFSET); |
| 3397 | h->cfgtable = remap_pci_mem(pci_resource_start(pdev, |
| 3398 | cfg_base_addr_index) + cfg_offset, |
| 3399 | sizeof(h->cfgtable)); |
Don Brace | 303932f | 2010-02-04 08:42:40 -0600 | [diff] [blame] | 3400 | /* Find performant mode table. */ |
| 3401 | trans_offset = readl(&(h->cfgtable->TransMethodOffset)); |
| 3402 | h->transtable = remap_pci_mem(pci_resource_start(pdev, |
| 3403 | cfg_base_addr_index)+cfg_offset+trans_offset, |
| 3404 | sizeof(*h->transtable)); |
| 3405 | |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 3406 | h->board_id = board_id; |
Don Brace | 303932f | 2010-02-04 08:42:40 -0600 | [diff] [blame] | 3407 | h->max_commands = readl(&(h->cfgtable->MaxPerformantModeCommands)); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 3408 | h->product_name = products[prod_index].product_name; |
| 3409 | h->access = *(products[prod_index].access); |
| 3410 | /* Allow room for some ioctls */ |
| 3411 | h->nr_cmds = h->max_commands - 4; |
| 3412 | |
| 3413 | if ((readb(&h->cfgtable->Signature[0]) != 'C') || |
| 3414 | (readb(&h->cfgtable->Signature[1]) != 'I') || |
| 3415 | (readb(&h->cfgtable->Signature[2]) != 'S') || |
| 3416 | (readb(&h->cfgtable->Signature[3]) != 'S')) { |
| 3417 | dev_warn(&pdev->dev, "not a valid CISS config table\n"); |
| 3418 | err = -ENODEV; |
| 3419 | goto err_out_free_res; |
| 3420 | } |
| 3421 | #ifdef CONFIG_X86 |
| 3422 | { |
| 3423 | /* Need to enable prefetch in the SCSI core for 6400 in x86 */ |
Stephen M. Cameron | 01a02ff | 2010-02-04 08:41:33 -0600 | [diff] [blame] | 3424 | u32 prefetch; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 3425 | prefetch = readl(&(h->cfgtable->SCSI_Prefetch)); |
| 3426 | prefetch |= 0x100; |
| 3427 | writel(prefetch, &(h->cfgtable->SCSI_Prefetch)); |
| 3428 | } |
| 3429 | #endif |
| 3430 | |
| 3431 | /* Disabling DMA prefetch for the P600 |
| 3432 | * An ASIC bug may result in a prefetch beyond |
| 3433 | * physical memory. |
| 3434 | */ |
| 3435 | if (board_id == 0x3225103C) { |
Stephen M. Cameron | 01a02ff | 2010-02-04 08:41:33 -0600 | [diff] [blame] | 3436 | u32 dma_prefetch; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 3437 | dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG); |
| 3438 | dma_prefetch |= 0x8000; |
| 3439 | writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG); |
| 3440 | } |
| 3441 | |
| 3442 | h->max_commands = readl(&(h->cfgtable->CmdsOutMax)); |
| 3443 | /* Update the field, and then ring the doorbell */ |
| 3444 | writel(CFGTBL_Trans_Simple, &(h->cfgtable->HostWrite.TransportRequest)); |
| 3445 | writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); |
| 3446 | |
| 3447 | /* under certain very rare conditions, this can take awhile. |
| 3448 | * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right |
| 3449 | * as we enter this code.) |
| 3450 | */ |
| 3451 | for (i = 0; i < MAX_CONFIG_WAIT; i++) { |
| 3452 | if (!(readl(h->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) |
| 3453 | break; |
| 3454 | /* delay and try again */ |
| 3455 | msleep(10); |
| 3456 | } |
| 3457 | |
| 3458 | #ifdef HPSA_DEBUG |
| 3459 | print_cfg_table(&pdev->dev, h->cfgtable); |
| 3460 | #endif /* HPSA_DEBUG */ |
| 3461 | |
| 3462 | if (!(readl(&(h->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) { |
| 3463 | dev_warn(&pdev->dev, "unable to get board into simple mode\n"); |
| 3464 | err = -ENODEV; |
| 3465 | goto err_out_free_res; |
| 3466 | } |
| 3467 | return 0; |
| 3468 | |
| 3469 | err_out_free_res: |
| 3470 | /* |
| 3471 | * Deliberately omit pci_disable_device(): it does something nasty to |
| 3472 | * Smart Array controllers that pci_enable_device does not undo |
| 3473 | */ |
| 3474 | pci_release_regions(pdev); |
| 3475 | return err; |
| 3476 | } |
| 3477 | |
Stephen M. Cameron | 339b2b1 | 2010-02-04 08:42:50 -0600 | [diff] [blame] | 3478 | static void __devinit hpsa_hba_inquiry(struct ctlr_info *h) |
| 3479 | { |
| 3480 | int rc; |
| 3481 | |
| 3482 | #define HBA_INQUIRY_BYTE_COUNT 64 |
| 3483 | h->hba_inquiry_data = kmalloc(HBA_INQUIRY_BYTE_COUNT, GFP_KERNEL); |
| 3484 | if (!h->hba_inquiry_data) |
| 3485 | return; |
| 3486 | rc = hpsa_scsi_do_inquiry(h, RAID_CTLR_LUNID, 0, |
| 3487 | h->hba_inquiry_data, HBA_INQUIRY_BYTE_COUNT); |
| 3488 | if (rc != 0) { |
| 3489 | kfree(h->hba_inquiry_data); |
| 3490 | h->hba_inquiry_data = NULL; |
| 3491 | } |
| 3492 | } |
| 3493 | |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 3494 | static int __devinit hpsa_init_one(struct pci_dev *pdev, |
| 3495 | const struct pci_device_id *ent) |
| 3496 | { |
Stephen M. Cameron | ecd9aad | 2010-02-04 08:41:59 -0600 | [diff] [blame] | 3497 | int i, rc; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 3498 | int dac; |
| 3499 | struct ctlr_info *h; |
| 3500 | |
| 3501 | if (number_of_controllers == 0) |
| 3502 | printk(KERN_INFO DRIVER_NAME "\n"); |
| 3503 | if (reset_devices) { |
| 3504 | /* Reset the controller with a PCI power-cycle */ |
| 3505 | if (hpsa_hard_reset_controller(pdev) || hpsa_reset_msi(pdev)) |
| 3506 | return -ENODEV; |
| 3507 | |
| 3508 | /* Some devices (notably the HP Smart Array 5i Controller) |
| 3509 | need a little pause here */ |
| 3510 | msleep(HPSA_POST_RESET_PAUSE_MSECS); |
| 3511 | |
| 3512 | /* Now try to get the controller to respond to a no-op */ |
| 3513 | for (i = 0; i < HPSA_POST_RESET_NOOP_RETRIES; i++) { |
| 3514 | if (hpsa_noop(pdev) == 0) |
| 3515 | break; |
| 3516 | else |
| 3517 | dev_warn(&pdev->dev, "no-op failed%s\n", |
| 3518 | (i < 11 ? "; re-trying" : "")); |
| 3519 | } |
| 3520 | } |
| 3521 | |
Don Brace | 303932f | 2010-02-04 08:42:40 -0600 | [diff] [blame] | 3522 | /* Command structures must be aligned on a 32-byte boundary because |
| 3523 | * the 5 lower bits of the address are used by the hardware. and by |
| 3524 | * the driver. See comments in hpsa.h for more info. |
| 3525 | */ |
| 3526 | #define COMMANDLIST_ALIGNMENT 32 |
| 3527 | BUILD_BUG_ON(sizeof(struct CommandList) % COMMANDLIST_ALIGNMENT); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 3528 | h = kzalloc(sizeof(*h), GFP_KERNEL); |
| 3529 | if (!h) |
Stephen M. Cameron | ecd9aad | 2010-02-04 08:41:59 -0600 | [diff] [blame] | 3530 | return -ENOMEM; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 3531 | |
| 3532 | h->busy_initializing = 1; |
| 3533 | INIT_HLIST_HEAD(&h->cmpQ); |
| 3534 | INIT_HLIST_HEAD(&h->reqQ); |
| 3535 | mutex_init(&h->busy_shutting_down); |
| 3536 | init_completion(&h->scan_wait); |
Stephen M. Cameron | ecd9aad | 2010-02-04 08:41:59 -0600 | [diff] [blame] | 3537 | rc = hpsa_pci_init(h, pdev); |
| 3538 | if (rc != 0) |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 3539 | goto clean1; |
| 3540 | |
| 3541 | sprintf(h->devname, "hpsa%d", number_of_controllers); |
| 3542 | h->ctlr = number_of_controllers; |
| 3543 | number_of_controllers++; |
| 3544 | h->pdev = pdev; |
| 3545 | |
| 3546 | /* configure PCI DMA stuff */ |
Stephen M. Cameron | ecd9aad | 2010-02-04 08:41:59 -0600 | [diff] [blame] | 3547 | rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); |
| 3548 | if (rc == 0) { |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 3549 | dac = 1; |
Stephen M. Cameron | ecd9aad | 2010-02-04 08:41:59 -0600 | [diff] [blame] | 3550 | } else { |
| 3551 | rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); |
| 3552 | if (rc == 0) { |
| 3553 | dac = 0; |
| 3554 | } else { |
| 3555 | dev_err(&pdev->dev, "no suitable DMA available\n"); |
| 3556 | goto clean1; |
| 3557 | } |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 3558 | } |
| 3559 | |
| 3560 | /* make sure the board interrupts are off */ |
| 3561 | h->access.set_intr_mask(h, HPSA_INTR_OFF); |
Don Brace | 303932f | 2010-02-04 08:42:40 -0600 | [diff] [blame] | 3562 | rc = request_irq(h->intr[PERF_MODE_INT], do_hpsa_intr, |
| 3563 | IRQF_DISABLED, h->devname, h); |
Stephen M. Cameron | ecd9aad | 2010-02-04 08:41:59 -0600 | [diff] [blame] | 3564 | if (rc) { |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 3565 | dev_err(&pdev->dev, "unable to get irq %d for %s\n", |
Don Brace | 303932f | 2010-02-04 08:42:40 -0600 | [diff] [blame] | 3566 | h->intr[PERF_MODE_INT], h->devname); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 3567 | goto clean2; |
| 3568 | } |
| 3569 | |
Don Brace | 303932f | 2010-02-04 08:42:40 -0600 | [diff] [blame] | 3570 | dev_info(&pdev->dev, "%s: <0x%x> at IRQ %d%s using DAC\n", |
| 3571 | h->devname, pdev->device, |
| 3572 | h->intr[PERF_MODE_INT], dac ? "" : " not"); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 3573 | |
| 3574 | h->cmd_pool_bits = |
| 3575 | kmalloc(((h->nr_cmds + BITS_PER_LONG - |
| 3576 | 1) / BITS_PER_LONG) * sizeof(unsigned long), GFP_KERNEL); |
| 3577 | h->cmd_pool = pci_alloc_consistent(h->pdev, |
| 3578 | h->nr_cmds * sizeof(*h->cmd_pool), |
| 3579 | &(h->cmd_pool_dhandle)); |
| 3580 | h->errinfo_pool = pci_alloc_consistent(h->pdev, |
| 3581 | h->nr_cmds * sizeof(*h->errinfo_pool), |
| 3582 | &(h->errinfo_pool_dhandle)); |
| 3583 | if ((h->cmd_pool_bits == NULL) |
| 3584 | || (h->cmd_pool == NULL) |
| 3585 | || (h->errinfo_pool == NULL)) { |
| 3586 | dev_err(&pdev->dev, "out of memory"); |
Stephen M. Cameron | ecd9aad | 2010-02-04 08:41:59 -0600 | [diff] [blame] | 3587 | rc = -ENOMEM; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 3588 | goto clean4; |
| 3589 | } |
| 3590 | spin_lock_init(&h->lock); |
Stephen M. Cameron | a08a847 | 2010-02-04 08:43:16 -0600 | [diff] [blame] | 3591 | spin_lock_init(&h->scan_lock); |
| 3592 | init_waitqueue_head(&h->scan_wait_queue); |
| 3593 | h->scan_finished = 1; /* no scan currently in progress */ |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 3594 | |
| 3595 | pci_set_drvdata(pdev, h); |
| 3596 | memset(h->cmd_pool_bits, 0, |
| 3597 | ((h->nr_cmds + BITS_PER_LONG - |
| 3598 | 1) / BITS_PER_LONG) * sizeof(unsigned long)); |
| 3599 | |
| 3600 | hpsa_scsi_setup(h); |
| 3601 | |
| 3602 | /* Turn the interrupts on so we can service requests */ |
| 3603 | h->access.set_intr_mask(h, HPSA_INTR_ON); |
| 3604 | |
Don Brace | 303932f | 2010-02-04 08:42:40 -0600 | [diff] [blame] | 3605 | hpsa_put_ctlr_into_performant_mode(h); |
Stephen M. Cameron | 339b2b1 | 2010-02-04 08:42:50 -0600 | [diff] [blame] | 3606 | hpsa_hba_inquiry(h); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 3607 | hpsa_register_scsi(h); /* hook ourselves into SCSI subsystem */ |
| 3608 | h->busy_initializing = 0; |
| 3609 | return 1; |
| 3610 | |
| 3611 | clean4: |
| 3612 | kfree(h->cmd_pool_bits); |
| 3613 | if (h->cmd_pool) |
| 3614 | pci_free_consistent(h->pdev, |
| 3615 | h->nr_cmds * sizeof(struct CommandList), |
| 3616 | h->cmd_pool, h->cmd_pool_dhandle); |
| 3617 | if (h->errinfo_pool) |
| 3618 | pci_free_consistent(h->pdev, |
| 3619 | h->nr_cmds * sizeof(struct ErrorInfo), |
| 3620 | h->errinfo_pool, |
| 3621 | h->errinfo_pool_dhandle); |
Don Brace | 303932f | 2010-02-04 08:42:40 -0600 | [diff] [blame] | 3622 | free_irq(h->intr[PERF_MODE_INT], h); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 3623 | clean2: |
| 3624 | clean1: |
| 3625 | h->busy_initializing = 0; |
| 3626 | kfree(h); |
Stephen M. Cameron | ecd9aad | 2010-02-04 08:41:59 -0600 | [diff] [blame] | 3627 | return rc; |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 3628 | } |
| 3629 | |
| 3630 | static void hpsa_flush_cache(struct ctlr_info *h) |
| 3631 | { |
| 3632 | char *flush_buf; |
| 3633 | struct CommandList *c; |
| 3634 | |
| 3635 | flush_buf = kzalloc(4, GFP_KERNEL); |
| 3636 | if (!flush_buf) |
| 3637 | return; |
| 3638 | |
| 3639 | c = cmd_special_alloc(h); |
| 3640 | if (!c) { |
| 3641 | dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n"); |
| 3642 | goto out_of_memory; |
| 3643 | } |
| 3644 | fill_cmd(c, HPSA_CACHE_FLUSH, h, flush_buf, 4, 0, |
| 3645 | RAID_CTLR_LUNID, TYPE_CMD); |
| 3646 | hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_TODEVICE); |
| 3647 | if (c->err_info->CommandStatus != 0) |
| 3648 | dev_warn(&h->pdev->dev, |
| 3649 | "error flushing cache on controller\n"); |
| 3650 | cmd_special_free(h, c); |
| 3651 | out_of_memory: |
| 3652 | kfree(flush_buf); |
| 3653 | } |
| 3654 | |
| 3655 | static void hpsa_shutdown(struct pci_dev *pdev) |
| 3656 | { |
| 3657 | struct ctlr_info *h; |
| 3658 | |
| 3659 | h = pci_get_drvdata(pdev); |
| 3660 | /* Turn board interrupts off and send the flush cache command |
| 3661 | * sendcmd will turn off interrupt, and send the flush... |
| 3662 | * To write all data in the battery backed cache to disks |
| 3663 | */ |
| 3664 | hpsa_flush_cache(h); |
| 3665 | h->access.set_intr_mask(h, HPSA_INTR_OFF); |
Don Brace | 303932f | 2010-02-04 08:42:40 -0600 | [diff] [blame] | 3666 | free_irq(h->intr[PERF_MODE_INT], h); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 3667 | #ifdef CONFIG_PCI_MSI |
| 3668 | if (h->msix_vector) |
| 3669 | pci_disable_msix(h->pdev); |
| 3670 | else if (h->msi_vector) |
| 3671 | pci_disable_msi(h->pdev); |
| 3672 | #endif /* CONFIG_PCI_MSI */ |
| 3673 | } |
| 3674 | |
| 3675 | static void __devexit hpsa_remove_one(struct pci_dev *pdev) |
| 3676 | { |
| 3677 | struct ctlr_info *h; |
| 3678 | |
| 3679 | if (pci_get_drvdata(pdev) == NULL) { |
| 3680 | dev_err(&pdev->dev, "unable to remove device \n"); |
| 3681 | return; |
| 3682 | } |
| 3683 | h = pci_get_drvdata(pdev); |
| 3684 | mutex_lock(&h->busy_shutting_down); |
| 3685 | remove_from_scan_list(h); |
| 3686 | hpsa_unregister_scsi(h); /* unhook from SCSI subsystem */ |
| 3687 | hpsa_shutdown(pdev); |
| 3688 | iounmap(h->vaddr); |
| 3689 | pci_free_consistent(h->pdev, |
| 3690 | h->nr_cmds * sizeof(struct CommandList), |
| 3691 | h->cmd_pool, h->cmd_pool_dhandle); |
| 3692 | pci_free_consistent(h->pdev, |
| 3693 | h->nr_cmds * sizeof(struct ErrorInfo), |
| 3694 | h->errinfo_pool, h->errinfo_pool_dhandle); |
Don Brace | 303932f | 2010-02-04 08:42:40 -0600 | [diff] [blame] | 3695 | pci_free_consistent(h->pdev, h->reply_pool_size, |
| 3696 | h->reply_pool, h->reply_pool_dhandle); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 3697 | kfree(h->cmd_pool_bits); |
Don Brace | 303932f | 2010-02-04 08:42:40 -0600 | [diff] [blame] | 3698 | kfree(h->blockFetchTable); |
Stephen M. Cameron | 339b2b1 | 2010-02-04 08:42:50 -0600 | [diff] [blame] | 3699 | kfree(h->hba_inquiry_data); |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 3700 | /* |
| 3701 | * Deliberately omit pci_disable_device(): it does something nasty to |
| 3702 | * Smart Array controllers that pci_enable_device does not undo |
| 3703 | */ |
| 3704 | pci_release_regions(pdev); |
| 3705 | pci_set_drvdata(pdev, NULL); |
| 3706 | mutex_unlock(&h->busy_shutting_down); |
| 3707 | kfree(h); |
| 3708 | } |
| 3709 | |
| 3710 | static int hpsa_suspend(__attribute__((unused)) struct pci_dev *pdev, |
| 3711 | __attribute__((unused)) pm_message_t state) |
| 3712 | { |
| 3713 | return -ENOSYS; |
| 3714 | } |
| 3715 | |
| 3716 | static int hpsa_resume(__attribute__((unused)) struct pci_dev *pdev) |
| 3717 | { |
| 3718 | return -ENOSYS; |
| 3719 | } |
| 3720 | |
| 3721 | static struct pci_driver hpsa_pci_driver = { |
| 3722 | .name = "hpsa", |
| 3723 | .probe = hpsa_init_one, |
| 3724 | .remove = __devexit_p(hpsa_remove_one), |
| 3725 | .id_table = hpsa_pci_device_id, /* id_table */ |
| 3726 | .shutdown = hpsa_shutdown, |
| 3727 | .suspend = hpsa_suspend, |
| 3728 | .resume = hpsa_resume, |
| 3729 | }; |
| 3730 | |
Don Brace | 303932f | 2010-02-04 08:42:40 -0600 | [diff] [blame] | 3731 | /* Fill in bucket_map[], given nsgs (the max number of |
| 3732 | * scatter gather elements supported) and bucket[], |
| 3733 | * which is an array of 8 integers. The bucket[] array |
| 3734 | * contains 8 different DMA transfer sizes (in 16 |
| 3735 | * byte increments) which the controller uses to fetch |
| 3736 | * commands. This function fills in bucket_map[], which |
| 3737 | * maps a given number of scatter gather elements to one of |
| 3738 | * the 8 DMA transfer sizes. The point of it is to allow the |
| 3739 | * controller to only do as much DMA as needed to fetch the |
| 3740 | * command, with the DMA transfer size encoded in the lower |
| 3741 | * bits of the command address. |
| 3742 | */ |
| 3743 | static void calc_bucket_map(int bucket[], int num_buckets, |
| 3744 | int nsgs, int *bucket_map) |
| 3745 | { |
| 3746 | int i, j, b, size; |
| 3747 | |
| 3748 | /* even a command with 0 SGs requires 4 blocks */ |
| 3749 | #define MINIMUM_TRANSFER_BLOCKS 4 |
| 3750 | #define NUM_BUCKETS 8 |
| 3751 | /* Note, bucket_map must have nsgs+1 entries. */ |
| 3752 | for (i = 0; i <= nsgs; i++) { |
| 3753 | /* Compute size of a command with i SG entries */ |
| 3754 | size = i + MINIMUM_TRANSFER_BLOCKS; |
| 3755 | b = num_buckets; /* Assume the biggest bucket */ |
| 3756 | /* Find the bucket that is just big enough */ |
| 3757 | for (j = 0; j < 8; j++) { |
| 3758 | if (bucket[j] >= size) { |
| 3759 | b = j; |
| 3760 | break; |
| 3761 | } |
| 3762 | } |
| 3763 | /* for a command with i SG entries, use bucket b. */ |
| 3764 | bucket_map[i] = b; |
| 3765 | } |
| 3766 | } |
| 3767 | |
| 3768 | static void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h) |
| 3769 | { |
| 3770 | u32 trans_support; |
| 3771 | u64 trans_offset; |
| 3772 | /* 5 = 1 s/g entry or 4k |
| 3773 | * 6 = 2 s/g entry or 8k |
| 3774 | * 8 = 4 s/g entry or 16k |
| 3775 | * 10 = 6 s/g entry or 24k |
| 3776 | */ |
| 3777 | int bft[8] = {5, 6, 8, 10, 12, 20, 28, 35}; /* for scatter/gathers */ |
| 3778 | int i = 0; |
| 3779 | int l = 0; |
| 3780 | unsigned long register_value; |
| 3781 | |
| 3782 | trans_support = readl(&(h->cfgtable->TransportSupport)); |
| 3783 | if (!(trans_support & PERFORMANT_MODE)) |
| 3784 | return; |
| 3785 | |
| 3786 | h->max_commands = readl(&(h->cfgtable->MaxPerformantModeCommands)); |
| 3787 | h->max_sg_entries = 32; |
| 3788 | /* Performant mode ring buffer and supporting data structures */ |
| 3789 | h->reply_pool_size = h->max_commands * sizeof(u64); |
| 3790 | h->reply_pool = pci_alloc_consistent(h->pdev, h->reply_pool_size, |
| 3791 | &(h->reply_pool_dhandle)); |
| 3792 | |
| 3793 | /* Need a block fetch table for performant mode */ |
| 3794 | h->blockFetchTable = kmalloc(((h->max_sg_entries+1) * |
| 3795 | sizeof(u32)), GFP_KERNEL); |
| 3796 | |
| 3797 | if ((h->reply_pool == NULL) |
| 3798 | || (h->blockFetchTable == NULL)) |
| 3799 | goto clean_up; |
| 3800 | |
| 3801 | h->reply_pool_wraparound = 1; /* spec: init to 1 */ |
| 3802 | |
| 3803 | /* Controller spec: zero out this buffer. */ |
| 3804 | memset(h->reply_pool, 0, h->reply_pool_size); |
| 3805 | h->reply_pool_head = h->reply_pool; |
| 3806 | |
| 3807 | trans_offset = readl(&(h->cfgtable->TransMethodOffset)); |
| 3808 | bft[7] = h->max_sg_entries + 4; |
| 3809 | calc_bucket_map(bft, ARRAY_SIZE(bft), 32, h->blockFetchTable); |
| 3810 | for (i = 0; i < 8; i++) |
| 3811 | writel(bft[i], &h->transtable->BlockFetch[i]); |
| 3812 | |
| 3813 | /* size of controller ring buffer */ |
| 3814 | writel(h->max_commands, &h->transtable->RepQSize); |
| 3815 | writel(1, &h->transtable->RepQCount); |
| 3816 | writel(0, &h->transtable->RepQCtrAddrLow32); |
| 3817 | writel(0, &h->transtable->RepQCtrAddrHigh32); |
| 3818 | writel(h->reply_pool_dhandle, &h->transtable->RepQAddr0Low32); |
| 3819 | writel(0, &h->transtable->RepQAddr0High32); |
| 3820 | writel(CFGTBL_Trans_Performant, |
| 3821 | &(h->cfgtable->HostWrite.TransportRequest)); |
| 3822 | writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); |
| 3823 | /* under certain very rare conditions, this can take awhile. |
| 3824 | * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right |
| 3825 | * as we enter this code.) */ |
| 3826 | for (l = 0; l < MAX_CONFIG_WAIT; l++) { |
| 3827 | register_value = readl(h->vaddr + SA5_DOORBELL); |
| 3828 | if (!(register_value & CFGTBL_ChangeReq)) |
| 3829 | break; |
| 3830 | /* delay and try again */ |
| 3831 | set_current_state(TASK_INTERRUPTIBLE); |
| 3832 | schedule_timeout(10); |
| 3833 | } |
| 3834 | register_value = readl(&(h->cfgtable->TransportActive)); |
| 3835 | if (!(register_value & CFGTBL_Trans_Performant)) { |
| 3836 | dev_warn(&h->pdev->dev, "unable to get board into" |
| 3837 | " performant mode\n"); |
| 3838 | return; |
| 3839 | } |
| 3840 | |
| 3841 | /* Change the access methods to the performant access methods */ |
| 3842 | h->access = SA5_performant_access; |
| 3843 | h->transMethod = CFGTBL_Trans_Performant; |
| 3844 | |
| 3845 | return; |
| 3846 | |
| 3847 | clean_up: |
| 3848 | if (h->reply_pool) |
| 3849 | pci_free_consistent(h->pdev, h->reply_pool_size, |
| 3850 | h->reply_pool, h->reply_pool_dhandle); |
| 3851 | kfree(h->blockFetchTable); |
| 3852 | } |
| 3853 | |
Stephen M. Cameron | edd1636 | 2009-12-08 14:09:11 -0800 | [diff] [blame] | 3854 | /* |
| 3855 | * This is it. Register the PCI driver information for the cards we control |
| 3856 | * the OS will call our registered routines when it finds one of our cards. |
| 3857 | */ |
| 3858 | static int __init hpsa_init(void) |
| 3859 | { |
| 3860 | int err; |
| 3861 | /* Start the scan thread */ |
| 3862 | hpsa_scan_thread = kthread_run(hpsa_scan_func, NULL, "hpsa_scan"); |
| 3863 | if (IS_ERR(hpsa_scan_thread)) { |
| 3864 | err = PTR_ERR(hpsa_scan_thread); |
| 3865 | return -ENODEV; |
| 3866 | } |
| 3867 | err = pci_register_driver(&hpsa_pci_driver); |
| 3868 | if (err) |
| 3869 | kthread_stop(hpsa_scan_thread); |
| 3870 | return err; |
| 3871 | } |
| 3872 | |
| 3873 | static void __exit hpsa_cleanup(void) |
| 3874 | { |
| 3875 | pci_unregister_driver(&hpsa_pci_driver); |
| 3876 | kthread_stop(hpsa_scan_thread); |
| 3877 | } |
| 3878 | |
| 3879 | module_init(hpsa_init); |
| 3880 | module_exit(hpsa_cleanup); |