Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * |
| 3 | * Linux MegaRAID device driver |
| 4 | * |
| 5 | * Copyright (c) 2003-2004 LSI Logic Corporation. |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License |
| 9 | * as published by the Free Software Foundation; either version |
| 10 | * 2 of the License, or (at your option) any later version. |
| 11 | * |
| 12 | * FILE : megaraid_mbox.c |
Ju, Seokmann | c005fb4 | 2006-04-27 02:33:06 -0700 | [diff] [blame] | 13 | * Version : v2.20.4.8 (Apr 11 2006) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | * |
| 15 | * Authors: |
| 16 | * Atul Mukker <Atul.Mukker@lsil.com> |
| 17 | * Sreenivas Bagalkote <Sreenivas.Bagalkote@lsil.com> |
| 18 | * Manoj Jose <Manoj.Jose@lsil.com> |
Ju, Seokmann | ed7e8ef | 2005-11-17 13:17:25 -0500 | [diff] [blame] | 19 | * Seokmann Ju <Seokmann.Ju@lsil.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | * |
| 21 | * List of supported controllers |
| 22 | * |
| 23 | * OEM Product Name VID DID SSVID SSID |
| 24 | * --- ------------ --- --- ---- ---- |
| 25 | * Dell PERC3/QC 101E 1960 1028 0471 |
| 26 | * Dell PERC3/DC 101E 1960 1028 0493 |
| 27 | * Dell PERC3/SC 101E 1960 1028 0475 |
| 28 | * Dell PERC3/Di 1028 1960 1028 0123 |
| 29 | * Dell PERC4/SC 1000 1960 1028 0520 |
| 30 | * Dell PERC4/DC 1000 1960 1028 0518 |
| 31 | * Dell PERC4/QC 1000 0407 1028 0531 |
| 32 | * Dell PERC4/Di 1028 000F 1028 014A |
| 33 | * Dell PERC 4e/Si 1028 0013 1028 016c |
| 34 | * Dell PERC 4e/Di 1028 0013 1028 016d |
| 35 | * Dell PERC 4e/Di 1028 0013 1028 016e |
| 36 | * Dell PERC 4e/Di 1028 0013 1028 016f |
| 37 | * Dell PERC 4e/Di 1028 0013 1028 0170 |
| 38 | * Dell PERC 4e/DC 1000 0408 1028 0002 |
| 39 | * Dell PERC 4e/SC 1000 0408 1028 0001 |
| 40 | * |
| 41 | * |
| 42 | * LSI MegaRAID SCSI 320-0 1000 1960 1000 A520 |
| 43 | * LSI MegaRAID SCSI 320-1 1000 1960 1000 0520 |
| 44 | * LSI MegaRAID SCSI 320-2 1000 1960 1000 0518 |
| 45 | * LSI MegaRAID SCSI 320-0X 1000 0407 1000 0530 |
| 46 | * LSI MegaRAID SCSI 320-2X 1000 0407 1000 0532 |
| 47 | * LSI MegaRAID SCSI 320-4X 1000 0407 1000 0531 |
| 48 | * LSI MegaRAID SCSI 320-1E 1000 0408 1000 0001 |
| 49 | * LSI MegaRAID SCSI 320-2E 1000 0408 1000 0002 |
| 50 | * LSI MegaRAID SATA 150-4 1000 1960 1000 4523 |
| 51 | * LSI MegaRAID SATA 150-6 1000 1960 1000 0523 |
| 52 | * LSI MegaRAID SATA 300-4X 1000 0409 1000 3004 |
| 53 | * LSI MegaRAID SATA 300-8X 1000 0409 1000 3008 |
| 54 | * |
| 55 | * INTEL RAID Controller SRCU42X 1000 0407 8086 0532 |
| 56 | * INTEL RAID Controller SRCS16 1000 1960 8086 0523 |
| 57 | * INTEL RAID Controller SRCU42E 1000 0408 8086 0002 |
| 58 | * INTEL RAID Controller SRCZCRX 1000 0407 8086 0530 |
| 59 | * INTEL RAID Controller SRCS28X 1000 0409 8086 3008 |
| 60 | * INTEL RAID Controller SROMBU42E 1000 0408 8086 3431 |
| 61 | * INTEL RAID Controller SROMBU42E 1000 0408 8086 3499 |
| 62 | * INTEL RAID Controller SRCU51L 1000 1960 8086 0520 |
| 63 | * |
| 64 | * FSC MegaRAID PCI Express ROMB 1000 0408 1734 1065 |
| 65 | * |
| 66 | * ACER MegaRAID ROMB-2E 1000 0408 1025 004D |
| 67 | * |
| 68 | * NEC MegaRAID PCI Express ROMB 1000 0408 1033 8287 |
| 69 | * |
| 70 | * For history of changes, see Documentation/ChangeLog.megaraid |
| 71 | */ |
| 72 | |
| 73 | #include "megaraid_mbox.h" |
| 74 | |
| 75 | static int megaraid_init(void); |
| 76 | static void megaraid_exit(void); |
| 77 | |
| 78 | static int megaraid_probe_one(struct pci_dev*, const struct pci_device_id *); |
| 79 | static void megaraid_detach_one(struct pci_dev *); |
Russell King | 5457b6a | 2005-10-16 21:32:46 +0100 | [diff] [blame] | 80 | static void megaraid_mbox_shutdown(struct pci_dev *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | |
| 82 | static int megaraid_io_attach(adapter_t *); |
| 83 | static void megaraid_io_detach(adapter_t *); |
| 84 | |
| 85 | static int megaraid_init_mbox(adapter_t *); |
| 86 | static void megaraid_fini_mbox(adapter_t *); |
| 87 | |
| 88 | static int megaraid_alloc_cmd_packets(adapter_t *); |
| 89 | static void megaraid_free_cmd_packets(adapter_t *); |
| 90 | |
| 91 | static int megaraid_mbox_setup_dma_pools(adapter_t *); |
| 92 | static void megaraid_mbox_teardown_dma_pools(adapter_t *); |
| 93 | |
| 94 | static int megaraid_sysfs_alloc_resources(adapter_t *); |
| 95 | static void megaraid_sysfs_free_resources(adapter_t *); |
| 96 | |
| 97 | static int megaraid_abort_handler(struct scsi_cmnd *); |
| 98 | static int megaraid_reset_handler(struct scsi_cmnd *); |
| 99 | |
| 100 | static int mbox_post_sync_cmd(adapter_t *, uint8_t []); |
| 101 | static int mbox_post_sync_cmd_fast(adapter_t *, uint8_t []); |
| 102 | static int megaraid_busywait_mbox(mraid_device_t *); |
| 103 | static int megaraid_mbox_product_info(adapter_t *); |
| 104 | static int megaraid_mbox_extended_cdb(adapter_t *); |
| 105 | static int megaraid_mbox_support_ha(adapter_t *, uint16_t *); |
| 106 | static int megaraid_mbox_support_random_del(adapter_t *); |
| 107 | static int megaraid_mbox_get_max_sg(adapter_t *); |
| 108 | static void megaraid_mbox_enum_raid_scsi(adapter_t *); |
| 109 | static void megaraid_mbox_flush_cache(adapter_t *); |
| 110 | |
| 111 | static void megaraid_mbox_display_scb(adapter_t *, scb_t *); |
| 112 | static void megaraid_mbox_setup_device_map(adapter_t *); |
| 113 | |
| 114 | static int megaraid_queue_command(struct scsi_cmnd *, |
| 115 | void (*)(struct scsi_cmnd *)); |
| 116 | static scb_t *megaraid_mbox_build_cmd(adapter_t *, struct scsi_cmnd *, int *); |
| 117 | static void megaraid_mbox_runpendq(adapter_t *, scb_t *); |
| 118 | static void megaraid_mbox_prepare_pthru(adapter_t *, scb_t *, |
| 119 | struct scsi_cmnd *); |
| 120 | static void megaraid_mbox_prepare_epthru(adapter_t *, scb_t *, |
| 121 | struct scsi_cmnd *); |
| 122 | |
| 123 | static irqreturn_t megaraid_isr(int, void *, struct pt_regs *); |
| 124 | |
| 125 | static void megaraid_mbox_dpc(unsigned long); |
| 126 | |
| 127 | static ssize_t megaraid_sysfs_show_app_hndl(struct class_device *, char *); |
Yani Ioannou | 10523b3 | 2005-05-17 06:43:37 -0400 | [diff] [blame] | 128 | static ssize_t megaraid_sysfs_show_ldnum(struct device *, struct device_attribute *attr, char *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | |
| 130 | static int megaraid_cmm_register(adapter_t *); |
| 131 | static int megaraid_cmm_unregister(adapter_t *); |
| 132 | static int megaraid_mbox_mm_handler(unsigned long, uioc_t *, uint32_t); |
| 133 | static int megaraid_mbox_mm_command(adapter_t *, uioc_t *); |
| 134 | static void megaraid_mbox_mm_done(adapter_t *, scb_t *); |
| 135 | static int gather_hbainfo(adapter_t *, mraid_hba_info_t *); |
| 136 | static int wait_till_fw_empty(adapter_t *); |
| 137 | |
| 138 | |
| 139 | |
Ju, Seokmann | ed7e8ef | 2005-11-17 13:17:25 -0500 | [diff] [blame] | 140 | MODULE_AUTHOR("sju@lsil.com"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | MODULE_DESCRIPTION("LSI Logic MegaRAID Mailbox Driver"); |
| 142 | MODULE_LICENSE("GPL"); |
| 143 | MODULE_VERSION(MEGARAID_VERSION); |
| 144 | |
| 145 | /* |
| 146 | * ### modules parameters for driver ### |
| 147 | */ |
| 148 | |
| 149 | /** |
| 150 | * Set to enable driver to expose unconfigured disk to kernel |
| 151 | */ |
| 152 | static int megaraid_expose_unconf_disks = 0; |
| 153 | module_param_named(unconf_disks, megaraid_expose_unconf_disks, int, 0); |
| 154 | MODULE_PARM_DESC(unconf_disks, |
| 155 | "Set to expose unconfigured disks to kernel (default=0)"); |
| 156 | |
| 157 | /** |
| 158 | * driver wait time if the adapter's mailbox is busy |
| 159 | */ |
| 160 | static unsigned int max_mbox_busy_wait = MBOX_BUSY_WAIT; |
| 161 | module_param_named(busy_wait, max_mbox_busy_wait, int, 0); |
| 162 | MODULE_PARM_DESC(busy_wait, |
| 163 | "Max wait for mailbox in microseconds if busy (default=10)"); |
| 164 | |
| 165 | /** |
| 166 | * number of sectors per IO command |
| 167 | */ |
| 168 | static unsigned int megaraid_max_sectors = MBOX_MAX_SECTORS; |
| 169 | module_param_named(max_sectors, megaraid_max_sectors, int, 0); |
| 170 | MODULE_PARM_DESC(max_sectors, |
| 171 | "Maximum number of sectors per IO command (default=128)"); |
| 172 | |
| 173 | /** |
| 174 | * number of commands per logical unit |
| 175 | */ |
| 176 | static unsigned int megaraid_cmd_per_lun = MBOX_DEF_CMD_PER_LUN; |
| 177 | module_param_named(cmd_per_lun, megaraid_cmd_per_lun, int, 0); |
| 178 | MODULE_PARM_DESC(cmd_per_lun, |
| 179 | "Maximum number of commands per logical unit (default=64)"); |
| 180 | |
| 181 | |
| 182 | /** |
| 183 | * Fast driver load option, skip scanning for physical devices during load. |
| 184 | * This would result in non-disk devices being skipped during driver load |
| 185 | * time. These can be later added though, using /proc/scsi/scsi |
| 186 | */ |
| 187 | static unsigned int megaraid_fast_load = 0; |
| 188 | module_param_named(fast_load, megaraid_fast_load, int, 0); |
| 189 | MODULE_PARM_DESC(fast_load, |
| 190 | "Faster loading of the driver, skips physical devices! (default=0)"); |
| 191 | |
| 192 | |
| 193 | /** |
| 194 | * mraid_debug level - threshold for amount of information to be displayed by |
| 195 | * the driver. This level can be changed through modules parameters, ioctl or |
| 196 | * sysfs/proc interface. By default, print the announcement messages only. |
| 197 | */ |
| 198 | int mraid_debug_level = CL_ANN; |
| 199 | module_param_named(debug_level, mraid_debug_level, int, 0); |
| 200 | MODULE_PARM_DESC(debug_level, "Debug level for driver (default=0)"); |
| 201 | |
| 202 | /* |
| 203 | * ### global data ### |
| 204 | */ |
| 205 | static uint8_t megaraid_mbox_version[8] = |
Ju, Seokmann | 672b2d3 | 2005-05-16 18:32:17 -0400 | [diff] [blame] | 206 | { 0x02, 0x20, 0x04, 0x06, 3, 7, 20, 5 }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | |
| 208 | |
| 209 | /* |
| 210 | * PCI table for all supported controllers. |
| 211 | */ |
| 212 | static struct pci_device_id pci_id_table_g[] = { |
| 213 | { |
| 214 | PCI_VENDOR_ID_DELL, |
| 215 | PCI_DEVICE_ID_PERC4_DI_DISCOVERY, |
| 216 | PCI_VENDOR_ID_DELL, |
| 217 | PCI_SUBSYS_ID_PERC4_DI_DISCOVERY, |
| 218 | }, |
| 219 | { |
| 220 | PCI_VENDOR_ID_LSI_LOGIC, |
| 221 | PCI_DEVICE_ID_PERC4_SC, |
| 222 | PCI_VENDOR_ID_DELL, |
| 223 | PCI_SUBSYS_ID_PERC4_SC, |
| 224 | }, |
| 225 | { |
| 226 | PCI_VENDOR_ID_LSI_LOGIC, |
| 227 | PCI_DEVICE_ID_PERC4_DC, |
| 228 | PCI_VENDOR_ID_DELL, |
| 229 | PCI_SUBSYS_ID_PERC4_DC, |
| 230 | }, |
| 231 | { |
| 232 | PCI_VENDOR_ID_LSI_LOGIC, |
Ju, Seokmann | 672b2d3 | 2005-05-16 18:32:17 -0400 | [diff] [blame] | 233 | PCI_DEVICE_ID_VERDE, |
| 234 | PCI_ANY_ID, |
| 235 | PCI_ANY_ID, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | }, |
| 237 | { |
| 238 | PCI_VENDOR_ID_DELL, |
| 239 | PCI_DEVICE_ID_PERC4_DI_EVERGLADES, |
| 240 | PCI_VENDOR_ID_DELL, |
| 241 | PCI_SUBSYS_ID_PERC4_DI_EVERGLADES, |
| 242 | }, |
| 243 | { |
| 244 | PCI_VENDOR_ID_DELL, |
| 245 | PCI_DEVICE_ID_PERC4E_SI_BIGBEND, |
| 246 | PCI_VENDOR_ID_DELL, |
| 247 | PCI_SUBSYS_ID_PERC4E_SI_BIGBEND, |
| 248 | }, |
| 249 | { |
| 250 | PCI_VENDOR_ID_DELL, |
| 251 | PCI_DEVICE_ID_PERC4E_DI_KOBUK, |
| 252 | PCI_VENDOR_ID_DELL, |
| 253 | PCI_SUBSYS_ID_PERC4E_DI_KOBUK, |
| 254 | }, |
| 255 | { |
| 256 | PCI_VENDOR_ID_DELL, |
| 257 | PCI_DEVICE_ID_PERC4E_DI_CORVETTE, |
| 258 | PCI_VENDOR_ID_DELL, |
| 259 | PCI_SUBSYS_ID_PERC4E_DI_CORVETTE, |
| 260 | }, |
| 261 | { |
| 262 | PCI_VENDOR_ID_DELL, |
| 263 | PCI_DEVICE_ID_PERC4E_DI_EXPEDITION, |
| 264 | PCI_VENDOR_ID_DELL, |
| 265 | PCI_SUBSYS_ID_PERC4E_DI_EXPEDITION, |
| 266 | }, |
| 267 | { |
| 268 | PCI_VENDOR_ID_DELL, |
| 269 | PCI_DEVICE_ID_PERC4E_DI_GUADALUPE, |
| 270 | PCI_VENDOR_ID_DELL, |
| 271 | PCI_SUBSYS_ID_PERC4E_DI_GUADALUPE, |
| 272 | }, |
| 273 | { |
| 274 | PCI_VENDOR_ID_LSI_LOGIC, |
Ju, Seokmann | 672b2d3 | 2005-05-16 18:32:17 -0400 | [diff] [blame] | 275 | PCI_DEVICE_ID_DOBSON, |
| 276 | PCI_ANY_ID, |
| 277 | PCI_ANY_ID, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | }, |
| 279 | { |
| 280 | PCI_VENDOR_ID_AMI, |
| 281 | PCI_DEVICE_ID_AMI_MEGARAID3, |
Ju, Seokmann | ed7e8ef | 2005-11-17 13:17:25 -0500 | [diff] [blame] | 282 | PCI_ANY_ID, |
| 283 | PCI_ANY_ID, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | }, |
| 285 | { |
Ju, Seokmann | ed7e8ef | 2005-11-17 13:17:25 -0500 | [diff] [blame] | 286 | PCI_VENDOR_ID_LSI_LOGIC, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | PCI_DEVICE_ID_AMI_MEGARAID3, |
Ju, Seokmann | ed7e8ef | 2005-11-17 13:17:25 -0500 | [diff] [blame] | 288 | PCI_ANY_ID, |
| 289 | PCI_ANY_ID, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | }, |
| 291 | { |
| 292 | PCI_VENDOR_ID_LSI_LOGIC, |
Ju, Seokmann | 672b2d3 | 2005-05-16 18:32:17 -0400 | [diff] [blame] | 293 | PCI_DEVICE_ID_LINDSAY, |
| 294 | PCI_ANY_ID, |
| 295 | PCI_ANY_ID, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | {0} /* Terminating entry */ |
| 298 | }; |
| 299 | MODULE_DEVICE_TABLE(pci, pci_id_table_g); |
| 300 | |
| 301 | |
| 302 | static struct pci_driver megaraid_pci_driver_g = { |
| 303 | .name = "megaraid", |
| 304 | .id_table = pci_id_table_g, |
| 305 | .probe = megaraid_probe_one, |
| 306 | .remove = __devexit_p(megaraid_detach_one), |
Russell King | 5457b6a | 2005-10-16 21:32:46 +0100 | [diff] [blame] | 307 | .shutdown = megaraid_mbox_shutdown, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | }; |
| 309 | |
| 310 | |
| 311 | |
| 312 | // definitions for the device attributes for exporting logical drive number |
| 313 | // for a scsi address (Host, Channel, Id, Lun) |
| 314 | |
| 315 | CLASS_DEVICE_ATTR(megaraid_mbox_app_hndl, S_IRUSR, megaraid_sysfs_show_app_hndl, |
| 316 | NULL); |
| 317 | |
| 318 | // Host template initializer for megaraid mbox sysfs device attributes |
| 319 | static struct class_device_attribute *megaraid_shost_attrs[] = { |
| 320 | &class_device_attr_megaraid_mbox_app_hndl, |
| 321 | NULL, |
| 322 | }; |
| 323 | |
| 324 | |
| 325 | DEVICE_ATTR(megaraid_mbox_ld, S_IRUSR, megaraid_sysfs_show_ldnum, NULL); |
| 326 | |
| 327 | // Host template initializer for megaraid mbox sysfs device attributes |
| 328 | static struct device_attribute *megaraid_sdev_attrs[] = { |
| 329 | &dev_attr_megaraid_mbox_ld, |
| 330 | NULL, |
| 331 | }; |
| 332 | |
| 333 | |
| 334 | /* |
| 335 | * Scsi host template for megaraid unified driver |
| 336 | */ |
| 337 | static struct scsi_host_template megaraid_template_g = { |
| 338 | .module = THIS_MODULE, |
| 339 | .name = "LSI Logic MegaRAID driver", |
| 340 | .proc_name = "megaraid", |
| 341 | .queuecommand = megaraid_queue_command, |
| 342 | .eh_abort_handler = megaraid_abort_handler, |
| 343 | .eh_device_reset_handler = megaraid_reset_handler, |
| 344 | .eh_bus_reset_handler = megaraid_reset_handler, |
| 345 | .eh_host_reset_handler = megaraid_reset_handler, |
| 346 | .use_clustering = ENABLE_CLUSTERING, |
| 347 | .sdev_attrs = megaraid_sdev_attrs, |
| 348 | .shost_attrs = megaraid_shost_attrs, |
| 349 | }; |
| 350 | |
| 351 | |
| 352 | /** |
| 353 | * megaraid_init - module load hook |
| 354 | * |
| 355 | * We register ourselves as hotplug enabled module and let PCI subsystem |
| 356 | * discover our adaters |
| 357 | **/ |
| 358 | static int __init |
| 359 | megaraid_init(void) |
| 360 | { |
| 361 | int rval; |
| 362 | |
| 363 | // Announce the driver version |
| 364 | con_log(CL_ANN, (KERN_INFO "megaraid: %s %s\n", MEGARAID_VERSION, |
| 365 | MEGARAID_EXT_VERSION)); |
| 366 | |
| 367 | // check validity of module parameters |
| 368 | if (megaraid_cmd_per_lun > MBOX_MAX_SCSI_CMDS) { |
| 369 | |
| 370 | con_log(CL_ANN, (KERN_WARNING |
| 371 | "megaraid mailbox: max commands per lun reset to %d\n", |
| 372 | MBOX_MAX_SCSI_CMDS)); |
| 373 | |
| 374 | megaraid_cmd_per_lun = MBOX_MAX_SCSI_CMDS; |
| 375 | } |
| 376 | |
| 377 | |
| 378 | // register as a PCI hot-plug driver module |
Ju, Seokmann | 672b2d3 | 2005-05-16 18:32:17 -0400 | [diff] [blame] | 379 | rval = pci_register_driver(&megaraid_pci_driver_g); |
| 380 | if (rval < 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | con_log(CL_ANN, (KERN_WARNING |
| 382 | "megaraid: could not register hotplug support.\n")); |
| 383 | } |
| 384 | |
| 385 | return rval; |
| 386 | } |
| 387 | |
| 388 | |
| 389 | /** |
| 390 | * megaraid_exit - driver unload entry point |
| 391 | * |
| 392 | * We simply unwrap the megaraid_init routine here |
| 393 | */ |
| 394 | static void __exit |
| 395 | megaraid_exit(void) |
| 396 | { |
| 397 | con_log(CL_DLEVEL1, (KERN_NOTICE "megaraid: unloading framework\n")); |
| 398 | |
| 399 | // unregister as PCI hotplug driver |
| 400 | pci_unregister_driver(&megaraid_pci_driver_g); |
| 401 | |
| 402 | return; |
| 403 | } |
| 404 | |
| 405 | |
| 406 | /** |
| 407 | * megaraid_probe_one - PCI hotplug entry point |
| 408 | * @param pdev : handle to this controller's PCI configuration space |
| 409 | * @param id : pci device id of the class of controllers |
| 410 | * |
| 411 | * This routine should be called whenever a new adapter is detected by the |
| 412 | * PCI hotplug susbsytem. |
| 413 | **/ |
| 414 | static int __devinit |
| 415 | megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) |
| 416 | { |
| 417 | adapter_t *adapter; |
| 418 | |
| 419 | |
| 420 | // detected a new controller |
| 421 | con_log(CL_ANN, (KERN_INFO |
| 422 | "megaraid: probe new device %#4.04x:%#4.04x:%#4.04x:%#4.04x: ", |
| 423 | pdev->vendor, pdev->device, pdev->subsystem_vendor, |
| 424 | pdev->subsystem_device)); |
| 425 | |
| 426 | con_log(CL_ANN, ("bus %d:slot %d:func %d\n", pdev->bus->number, |
| 427 | PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn))); |
| 428 | |
| 429 | if (pci_enable_device(pdev)) { |
| 430 | con_log(CL_ANN, (KERN_WARNING |
| 431 | "megaraid: pci_enable_device failed\n")); |
| 432 | |
| 433 | return -ENODEV; |
| 434 | } |
| 435 | |
| 436 | // Enable bus-mastering on this controller |
| 437 | pci_set_master(pdev); |
| 438 | |
| 439 | // Allocate the per driver initialization structure |
| 440 | adapter = kmalloc(sizeof(adapter_t), GFP_KERNEL); |
| 441 | |
| 442 | if (adapter == NULL) { |
| 443 | con_log(CL_ANN, (KERN_WARNING |
| 444 | "megaraid: out of memory, %s %d.\n", __FUNCTION__, __LINE__)); |
| 445 | |
| 446 | goto out_probe_one; |
| 447 | } |
| 448 | memset(adapter, 0, sizeof(adapter_t)); |
| 449 | |
| 450 | |
| 451 | // set up PCI related soft state and other pre-known parameters |
| 452 | adapter->unique_id = pdev->bus->number << 8 | pdev->devfn; |
| 453 | adapter->irq = pdev->irq; |
| 454 | adapter->pdev = pdev; |
| 455 | |
| 456 | atomic_set(&adapter->being_detached, 0); |
| 457 | |
| 458 | // Setup the default DMA mask. This would be changed later on |
| 459 | // depending on hardware capabilities |
Ju, Seokmann | 672b2d3 | 2005-05-16 18:32:17 -0400 | [diff] [blame] | 460 | if (pci_set_dma_mask(adapter->pdev, DMA_32BIT_MASK) != 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | |
| 462 | con_log(CL_ANN, (KERN_WARNING |
| 463 | "megaraid: pci_set_dma_mask failed:%d\n", __LINE__)); |
| 464 | |
| 465 | goto out_free_adapter; |
| 466 | } |
| 467 | |
| 468 | |
| 469 | // Initialize the synchronization lock for kernel and LLD |
| 470 | spin_lock_init(&adapter->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | |
| 472 | // Initialize the command queues: the list of free SCBs and the list |
| 473 | // of pending SCBs. |
| 474 | INIT_LIST_HEAD(&adapter->kscb_pool); |
| 475 | spin_lock_init(SCSI_FREE_LIST_LOCK(adapter)); |
| 476 | |
| 477 | INIT_LIST_HEAD(&adapter->pend_list); |
| 478 | spin_lock_init(PENDING_LIST_LOCK(adapter)); |
| 479 | |
| 480 | INIT_LIST_HEAD(&adapter->completed_list); |
| 481 | spin_lock_init(COMPLETED_LIST_LOCK(adapter)); |
| 482 | |
| 483 | |
| 484 | // Start the mailbox based controller |
| 485 | if (megaraid_init_mbox(adapter) != 0) { |
| 486 | con_log(CL_ANN, (KERN_WARNING |
| 487 | "megaraid: maibox adapter did not initialize\n")); |
| 488 | |
| 489 | goto out_free_adapter; |
| 490 | } |
| 491 | |
| 492 | // Register with LSI Common Management Module |
| 493 | if (megaraid_cmm_register(adapter) != 0) { |
| 494 | |
| 495 | con_log(CL_ANN, (KERN_WARNING |
| 496 | "megaraid: could not register with management module\n")); |
| 497 | |
| 498 | goto out_fini_mbox; |
| 499 | } |
| 500 | |
| 501 | // setup adapter handle in PCI soft state |
| 502 | pci_set_drvdata(pdev, adapter); |
| 503 | |
| 504 | // attach with scsi mid-layer |
| 505 | if (megaraid_io_attach(adapter) != 0) { |
| 506 | |
| 507 | con_log(CL_ANN, (KERN_WARNING "megaraid: io attach failed\n")); |
| 508 | |
| 509 | goto out_cmm_unreg; |
| 510 | } |
| 511 | |
| 512 | return 0; |
| 513 | |
| 514 | out_cmm_unreg: |
| 515 | pci_set_drvdata(pdev, NULL); |
| 516 | megaraid_cmm_unregister(adapter); |
| 517 | out_fini_mbox: |
| 518 | megaraid_fini_mbox(adapter); |
| 519 | out_free_adapter: |
| 520 | kfree(adapter); |
| 521 | out_probe_one: |
| 522 | pci_disable_device(pdev); |
| 523 | |
| 524 | return -ENODEV; |
| 525 | } |
| 526 | |
| 527 | |
| 528 | /** |
| 529 | * megaraid_detach_one - release the framework resources and call LLD release |
| 530 | * routine |
| 531 | * @param pdev : handle for our PCI cofiguration space |
| 532 | * |
| 533 | * This routine is called during driver unload. We free all the allocated |
| 534 | * resources and call the corresponding LLD so that it can also release all |
| 535 | * its resources. |
| 536 | * |
| 537 | * This routine is also called from the PCI hotplug system |
| 538 | **/ |
| 539 | static void |
| 540 | megaraid_detach_one(struct pci_dev *pdev) |
| 541 | { |
| 542 | adapter_t *adapter; |
| 543 | struct Scsi_Host *host; |
| 544 | |
| 545 | |
| 546 | // Start a rollback on this adapter |
| 547 | adapter = pci_get_drvdata(pdev); |
| 548 | |
| 549 | if (!adapter) { |
| 550 | con_log(CL_ANN, (KERN_CRIT |
| 551 | "megaraid: Invalid detach on %#4.04x:%#4.04x:%#4.04x:%#4.04x\n", |
| 552 | pdev->vendor, pdev->device, pdev->subsystem_vendor, |
| 553 | pdev->subsystem_device)); |
| 554 | |
| 555 | return; |
| 556 | } |
| 557 | else { |
| 558 | con_log(CL_ANN, (KERN_NOTICE |
| 559 | "megaraid: detaching device %#4.04x:%#4.04x:%#4.04x:%#4.04x\n", |
| 560 | pdev->vendor, pdev->device, pdev->subsystem_vendor, |
| 561 | pdev->subsystem_device)); |
| 562 | } |
| 563 | |
| 564 | |
| 565 | host = adapter->host; |
| 566 | |
| 567 | // do not allow any more requests from the management module for this |
| 568 | // adapter. |
| 569 | // FIXME: How do we account for the request which might still be |
| 570 | // pending with us? |
| 571 | atomic_set(&adapter->being_detached, 1); |
| 572 | |
| 573 | // detach from the IO sub-system |
| 574 | megaraid_io_detach(adapter); |
| 575 | |
| 576 | // reset the device state in the PCI structure. We check this |
| 577 | // condition when we enter here. If the device state is NULL, |
| 578 | // that would mean the device has already been removed |
| 579 | pci_set_drvdata(pdev, NULL); |
| 580 | |
| 581 | // Unregister from common management module |
| 582 | // |
| 583 | // FIXME: this must return success or failure for conditions if there |
| 584 | // is a command pending with LLD or not. |
| 585 | megaraid_cmm_unregister(adapter); |
| 586 | |
| 587 | // finalize the mailbox based controller and release all resources |
| 588 | megaraid_fini_mbox(adapter); |
| 589 | |
| 590 | kfree(adapter); |
| 591 | |
| 592 | scsi_host_put(host); |
| 593 | |
| 594 | pci_disable_device(pdev); |
| 595 | |
| 596 | return; |
| 597 | } |
| 598 | |
| 599 | |
| 600 | /** |
| 601 | * megaraid_mbox_shutdown - PCI shutdown for megaraid HBA |
| 602 | * @param device : generice driver model device |
| 603 | * |
| 604 | * Shutdown notification, perform flush cache |
| 605 | */ |
| 606 | static void |
Russell King | 5457b6a | 2005-10-16 21:32:46 +0100 | [diff] [blame] | 607 | megaraid_mbox_shutdown(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | { |
Russell King | 5457b6a | 2005-10-16 21:32:46 +0100 | [diff] [blame] | 609 | adapter_t *adapter = pci_get_drvdata(pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | static int counter; |
| 611 | |
| 612 | if (!adapter) { |
| 613 | con_log(CL_ANN, (KERN_WARNING |
| 614 | "megaraid: null device in shutdown\n")); |
| 615 | return; |
| 616 | } |
| 617 | |
| 618 | // flush caches now |
| 619 | con_log(CL_ANN, (KERN_INFO "megaraid: flushing adapter %d...", |
| 620 | counter++)); |
| 621 | |
| 622 | megaraid_mbox_flush_cache(adapter); |
| 623 | |
| 624 | con_log(CL_ANN, ("done\n")); |
| 625 | } |
| 626 | |
| 627 | |
| 628 | /** |
| 629 | * megaraid_io_attach - attach a device with the IO subsystem |
| 630 | * @param adapter : controller's soft state |
| 631 | * |
| 632 | * Attach this device with the IO subsystem |
| 633 | **/ |
| 634 | static int |
| 635 | megaraid_io_attach(adapter_t *adapter) |
| 636 | { |
| 637 | struct Scsi_Host *host; |
| 638 | |
| 639 | // Initialize SCSI Host structure |
| 640 | host = scsi_host_alloc(&megaraid_template_g, 8); |
| 641 | if (!host) { |
| 642 | con_log(CL_ANN, (KERN_WARNING |
| 643 | "megaraid mbox: scsi_register failed\n")); |
| 644 | |
| 645 | return -1; |
| 646 | } |
| 647 | |
| 648 | SCSIHOST2ADAP(host) = (caddr_t)adapter; |
| 649 | adapter->host = host; |
| 650 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 651 | host->irq = adapter->irq; |
| 652 | host->unique_id = adapter->unique_id; |
| 653 | host->can_queue = adapter->max_cmds; |
| 654 | host->this_id = adapter->init_id; |
| 655 | host->sg_tablesize = adapter->sglen; |
| 656 | host->max_sectors = adapter->max_sectors; |
| 657 | host->cmd_per_lun = adapter->cmd_per_lun; |
| 658 | host->max_channel = adapter->max_channel; |
| 659 | host->max_id = adapter->max_target; |
| 660 | host->max_lun = adapter->max_lun; |
| 661 | |
| 662 | |
| 663 | // notify mid-layer about the new controller |
| 664 | if (scsi_add_host(host, &adapter->pdev->dev)) { |
| 665 | |
| 666 | con_log(CL_ANN, (KERN_WARNING |
| 667 | "megaraid mbox: scsi_add_host failed\n")); |
| 668 | |
| 669 | scsi_host_put(host); |
| 670 | |
| 671 | return -1; |
| 672 | } |
| 673 | |
| 674 | scsi_scan_host(host); |
| 675 | |
| 676 | return 0; |
| 677 | } |
| 678 | |
| 679 | |
| 680 | /** |
| 681 | * megaraid_io_detach - detach a device from the IO subsystem |
| 682 | * @param adapter : controller's soft state |
| 683 | * |
| 684 | * Detach this device from the IO subsystem |
| 685 | **/ |
| 686 | static void |
| 687 | megaraid_io_detach(adapter_t *adapter) |
| 688 | { |
| 689 | struct Scsi_Host *host; |
| 690 | |
| 691 | con_log(CL_DLEVEL1, (KERN_INFO "megaraid: io detach\n")); |
| 692 | |
| 693 | host = adapter->host; |
| 694 | |
| 695 | scsi_remove_host(host); |
| 696 | |
| 697 | return; |
| 698 | } |
| 699 | |
| 700 | |
| 701 | /* |
| 702 | * START: Mailbox Low Level Driver |
| 703 | * |
| 704 | * This is section specific to the single mailbox based controllers |
| 705 | */ |
| 706 | |
| 707 | /** |
| 708 | * megaraid_init_mbox - initialize controller |
| 709 | * @param adapter - our soft state |
| 710 | * |
| 711 | * . Allocate 16-byte aligned mailbox memory for firmware handshake |
| 712 | * . Allocate controller's memory resources |
| 713 | * . Find out all initialization data |
| 714 | * . Allocate memory required for all the commands |
| 715 | * . Use internal library of FW routines, build up complete soft state |
| 716 | */ |
| 717 | static int __init |
| 718 | megaraid_init_mbox(adapter_t *adapter) |
| 719 | { |
| 720 | struct pci_dev *pdev; |
| 721 | mraid_device_t *raid_dev; |
| 722 | int i; |
| 723 | |
| 724 | |
| 725 | adapter->ito = MBOX_TIMEOUT; |
| 726 | pdev = adapter->pdev; |
| 727 | |
| 728 | /* |
| 729 | * Allocate and initialize the init data structure for mailbox |
| 730 | * controllers |
| 731 | */ |
| 732 | raid_dev = kmalloc(sizeof(mraid_device_t), GFP_KERNEL); |
| 733 | if (raid_dev == NULL) return -1; |
| 734 | |
| 735 | memset(raid_dev, 0, sizeof(mraid_device_t)); |
| 736 | |
| 737 | /* |
| 738 | * Attach the adapter soft state to raid device soft state |
| 739 | */ |
| 740 | adapter->raid_device = (caddr_t)raid_dev; |
| 741 | raid_dev->fast_load = megaraid_fast_load; |
| 742 | |
| 743 | |
| 744 | // our baseport |
| 745 | raid_dev->baseport = pci_resource_start(pdev, 0); |
| 746 | |
| 747 | if (pci_request_regions(pdev, "MegaRAID: LSI Logic Corporation") != 0) { |
| 748 | |
| 749 | con_log(CL_ANN, (KERN_WARNING |
| 750 | "megaraid: mem region busy\n")); |
| 751 | |
| 752 | goto out_free_raid_dev; |
| 753 | } |
| 754 | |
| 755 | raid_dev->baseaddr = ioremap_nocache(raid_dev->baseport, 128); |
| 756 | |
| 757 | if (!raid_dev->baseaddr) { |
| 758 | |
| 759 | con_log(CL_ANN, (KERN_WARNING |
| 760 | "megaraid: could not map hba memory\n") ); |
| 761 | |
| 762 | goto out_release_regions; |
| 763 | } |
| 764 | |
| 765 | // |
| 766 | // Setup the rest of the soft state using the library of FW routines |
| 767 | // |
| 768 | |
| 769 | // request IRQ and register the interrupt service routine |
| 770 | if (request_irq(adapter->irq, megaraid_isr, SA_SHIRQ, "megaraid", |
| 771 | adapter)) { |
| 772 | |
| 773 | con_log(CL_ANN, (KERN_WARNING |
| 774 | "megaraid: Couldn't register IRQ %d!\n", adapter->irq)); |
| 775 | |
| 776 | goto out_iounmap; |
| 777 | } |
| 778 | |
| 779 | |
| 780 | // initialize the mutual exclusion lock for the mailbox |
| 781 | spin_lock_init(&raid_dev->mailbox_lock); |
| 782 | |
| 783 | // allocate memory required for commands |
| 784 | if (megaraid_alloc_cmd_packets(adapter) != 0) { |
| 785 | goto out_free_irq; |
| 786 | } |
| 787 | |
| 788 | // Product info |
| 789 | if (megaraid_mbox_product_info(adapter) != 0) { |
| 790 | goto out_alloc_cmds; |
| 791 | } |
| 792 | |
| 793 | // Do we support extended CDBs |
| 794 | adapter->max_cdb_sz = 10; |
| 795 | if (megaraid_mbox_extended_cdb(adapter) == 0) { |
| 796 | adapter->max_cdb_sz = 16; |
| 797 | } |
| 798 | |
| 799 | /* |
| 800 | * Do we support cluster environment, if we do, what is the initiator |
| 801 | * id. |
| 802 | * NOTE: In a non-cluster aware firmware environment, the LLD should |
| 803 | * return 7 as initiator id. |
| 804 | */ |
| 805 | adapter->ha = 0; |
| 806 | adapter->init_id = -1; |
| 807 | if (megaraid_mbox_support_ha(adapter, &adapter->init_id) == 0) { |
| 808 | adapter->ha = 1; |
| 809 | } |
| 810 | |
| 811 | /* |
| 812 | * Prepare the device ids array to have the mapping between the kernel |
| 813 | * device address and megaraid device address. |
| 814 | * We export the physical devices on their actual addresses. The |
| 815 | * logical drives are exported on a virtual SCSI channel |
| 816 | */ |
| 817 | megaraid_mbox_setup_device_map(adapter); |
| 818 | |
| 819 | // If the firmware supports random deletion, update the device id map |
| 820 | if (megaraid_mbox_support_random_del(adapter)) { |
| 821 | |
| 822 | // Change the logical drives numbers in device_ids array one |
| 823 | // slot in device_ids is reserved for target id, that's why |
| 824 | // "<=" below |
| 825 | for (i = 0; i <= MAX_LOGICAL_DRIVES_40LD; i++) { |
| 826 | adapter->device_ids[adapter->max_channel][i] += 0x80; |
| 827 | } |
| 828 | adapter->device_ids[adapter->max_channel][adapter->init_id] = |
| 829 | 0xFF; |
| 830 | |
| 831 | raid_dev->random_del_supported = 1; |
| 832 | } |
| 833 | |
| 834 | /* |
| 835 | * find out the maximum number of scatter-gather elements supported by |
| 836 | * this firmware |
| 837 | */ |
| 838 | adapter->sglen = megaraid_mbox_get_max_sg(adapter); |
| 839 | |
| 840 | // enumerate RAID and SCSI channels so that all devices on SCSI |
| 841 | // channels can later be exported, including disk devices |
| 842 | megaraid_mbox_enum_raid_scsi(adapter); |
| 843 | |
| 844 | /* |
| 845 | * Other parameters required by upper layer |
| 846 | * |
| 847 | * maximum number of sectors per IO command |
| 848 | */ |
| 849 | adapter->max_sectors = megaraid_max_sectors; |
| 850 | |
| 851 | /* |
| 852 | * number of queued commands per LUN. |
| 853 | */ |
| 854 | adapter->cmd_per_lun = megaraid_cmd_per_lun; |
| 855 | |
| 856 | /* |
| 857 | * Allocate resources required to issue FW calls, when sysfs is |
| 858 | * accessed |
| 859 | */ |
| 860 | if (megaraid_sysfs_alloc_resources(adapter) != 0) { |
| 861 | goto out_alloc_cmds; |
| 862 | } |
| 863 | |
| 864 | // Set the DMA mask to 64-bit. All supported controllers as capable of |
| 865 | // DMA in this range |
Ju, Seokmann | 672b2d3 | 2005-05-16 18:32:17 -0400 | [diff] [blame] | 866 | if (pci_set_dma_mask(adapter->pdev, DMA_64BIT_MASK) != 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 867 | |
| 868 | con_log(CL_ANN, (KERN_WARNING |
| 869 | "megaraid: could not set DMA mask for 64-bit.\n")); |
| 870 | |
| 871 | goto out_free_sysfs_res; |
| 872 | } |
| 873 | |
| 874 | // setup tasklet for DPC |
| 875 | tasklet_init(&adapter->dpc_h, megaraid_mbox_dpc, |
| 876 | (unsigned long)adapter); |
| 877 | |
| 878 | con_log(CL_DLEVEL1, (KERN_INFO |
| 879 | "megaraid mbox hba successfully initialized\n")); |
| 880 | |
| 881 | return 0; |
| 882 | |
| 883 | out_free_sysfs_res: |
| 884 | megaraid_sysfs_free_resources(adapter); |
| 885 | out_alloc_cmds: |
| 886 | megaraid_free_cmd_packets(adapter); |
| 887 | out_free_irq: |
| 888 | free_irq(adapter->irq, adapter); |
| 889 | out_iounmap: |
| 890 | iounmap(raid_dev->baseaddr); |
| 891 | out_release_regions: |
| 892 | pci_release_regions(pdev); |
| 893 | out_free_raid_dev: |
| 894 | kfree(raid_dev); |
| 895 | |
| 896 | return -1; |
| 897 | } |
| 898 | |
| 899 | |
| 900 | /** |
| 901 | * megaraid_fini_mbox - undo controller initialization |
| 902 | * @param adapter : our soft state |
| 903 | */ |
| 904 | static void |
| 905 | megaraid_fini_mbox(adapter_t *adapter) |
| 906 | { |
| 907 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 908 | |
| 909 | // flush all caches |
| 910 | megaraid_mbox_flush_cache(adapter); |
| 911 | |
| 912 | tasklet_kill(&adapter->dpc_h); |
| 913 | |
| 914 | megaraid_sysfs_free_resources(adapter); |
| 915 | |
| 916 | megaraid_free_cmd_packets(adapter); |
| 917 | |
| 918 | free_irq(adapter->irq, adapter); |
| 919 | |
| 920 | iounmap(raid_dev->baseaddr); |
| 921 | |
| 922 | pci_release_regions(adapter->pdev); |
| 923 | |
| 924 | kfree(raid_dev); |
| 925 | |
| 926 | return; |
| 927 | } |
| 928 | |
| 929 | |
| 930 | /** |
| 931 | * megaraid_alloc_cmd_packets - allocate shared mailbox |
| 932 | * @param adapter : soft state of the raid controller |
| 933 | * |
| 934 | * Allocate and align the shared mailbox. This maibox is used to issue |
| 935 | * all the commands. For IO based controllers, the mailbox is also regsitered |
| 936 | * with the FW. Allocate memory for all commands as well. |
| 937 | * This is our big allocator |
| 938 | */ |
| 939 | static int |
| 940 | megaraid_alloc_cmd_packets(adapter_t *adapter) |
| 941 | { |
| 942 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 943 | struct pci_dev *pdev; |
| 944 | unsigned long align; |
| 945 | scb_t *scb; |
| 946 | mbox_ccb_t *ccb; |
| 947 | struct mraid_pci_blk *epthru_pci_blk; |
| 948 | struct mraid_pci_blk *sg_pci_blk; |
| 949 | struct mraid_pci_blk *mbox_pci_blk; |
| 950 | int i; |
| 951 | |
| 952 | pdev = adapter->pdev; |
| 953 | |
| 954 | /* |
| 955 | * Setup the mailbox |
| 956 | * Allocate the common 16-byte aligned memory for the handshake |
| 957 | * mailbox. |
| 958 | */ |
| 959 | raid_dev->una_mbox64 = pci_alloc_consistent(adapter->pdev, |
| 960 | sizeof(mbox64_t), &raid_dev->una_mbox64_dma); |
| 961 | |
| 962 | if (!raid_dev->una_mbox64) { |
| 963 | con_log(CL_ANN, (KERN_WARNING |
| 964 | "megaraid: out of memory, %s %d\n", __FUNCTION__, |
| 965 | __LINE__)); |
| 966 | return -1; |
| 967 | } |
| 968 | memset(raid_dev->una_mbox64, 0, sizeof(mbox64_t)); |
| 969 | |
| 970 | /* |
| 971 | * Align the mailbox at 16-byte boundary |
| 972 | */ |
| 973 | raid_dev->mbox = &raid_dev->una_mbox64->mbox32; |
| 974 | |
| 975 | raid_dev->mbox = (mbox_t *)((((unsigned long)raid_dev->mbox) + 15) & |
| 976 | (~0UL ^ 0xFUL)); |
| 977 | |
| 978 | raid_dev->mbox64 = (mbox64_t *)(((unsigned long)raid_dev->mbox) - 8); |
| 979 | |
| 980 | align = ((void *)raid_dev->mbox - |
| 981 | ((void *)&raid_dev->una_mbox64->mbox32)); |
| 982 | |
| 983 | raid_dev->mbox_dma = (unsigned long)raid_dev->una_mbox64_dma + 8 + |
| 984 | align; |
| 985 | |
| 986 | // Allocate memory for commands issued internally |
| 987 | adapter->ibuf = pci_alloc_consistent(pdev, MBOX_IBUF_SIZE, |
| 988 | &adapter->ibuf_dma_h); |
| 989 | if (!adapter->ibuf) { |
| 990 | |
| 991 | con_log(CL_ANN, (KERN_WARNING |
| 992 | "megaraid: out of memory, %s %d\n", __FUNCTION__, |
| 993 | __LINE__)); |
| 994 | |
| 995 | goto out_free_common_mbox; |
| 996 | } |
| 997 | memset(adapter->ibuf, 0, MBOX_IBUF_SIZE); |
| 998 | |
| 999 | // Allocate memory for our SCSI Command Blocks and their associated |
| 1000 | // memory |
| 1001 | |
| 1002 | /* |
| 1003 | * Allocate memory for the base list of scb. Later allocate memory for |
| 1004 | * CCBs and embedded components of each CCB and point the pointers in |
| 1005 | * scb to the allocated components |
| 1006 | * NOTE: The code to allocate SCB will be duplicated in all the LLD |
| 1007 | * since the calling routine does not yet know the number of available |
| 1008 | * commands. |
| 1009 | */ |
| 1010 | adapter->kscb_list = kmalloc(sizeof(scb_t) * MBOX_MAX_SCSI_CMDS, |
| 1011 | GFP_KERNEL); |
| 1012 | |
| 1013 | if (adapter->kscb_list == NULL) { |
| 1014 | con_log(CL_ANN, (KERN_WARNING |
| 1015 | "megaraid: out of memory, %s %d\n", __FUNCTION__, |
| 1016 | __LINE__)); |
| 1017 | goto out_free_ibuf; |
| 1018 | } |
| 1019 | memset(adapter->kscb_list, 0, sizeof(scb_t) * MBOX_MAX_SCSI_CMDS); |
| 1020 | |
| 1021 | // memory allocation for our command packets |
| 1022 | if (megaraid_mbox_setup_dma_pools(adapter) != 0) { |
| 1023 | con_log(CL_ANN, (KERN_WARNING |
| 1024 | "megaraid: out of memory, %s %d\n", __FUNCTION__, |
| 1025 | __LINE__)); |
| 1026 | goto out_free_scb_list; |
| 1027 | } |
| 1028 | |
| 1029 | // Adjust the scb pointers and link in the free pool |
| 1030 | epthru_pci_blk = raid_dev->epthru_pool; |
| 1031 | sg_pci_blk = raid_dev->sg_pool; |
| 1032 | mbox_pci_blk = raid_dev->mbox_pool; |
| 1033 | |
| 1034 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { |
| 1035 | scb = adapter->kscb_list + i; |
| 1036 | ccb = raid_dev->ccb_list + i; |
| 1037 | |
| 1038 | ccb->mbox = (mbox_t *)(mbox_pci_blk[i].vaddr + 16); |
| 1039 | ccb->raw_mbox = (uint8_t *)ccb->mbox; |
| 1040 | ccb->mbox64 = (mbox64_t *)(mbox_pci_blk[i].vaddr + 8); |
| 1041 | ccb->mbox_dma_h = (unsigned long)mbox_pci_blk[i].dma_addr + 16; |
| 1042 | |
| 1043 | // make sure the mailbox is aligned properly |
| 1044 | if (ccb->mbox_dma_h & 0x0F) { |
| 1045 | con_log(CL_ANN, (KERN_CRIT |
| 1046 | "megaraid mbox: not aligned on 16-bytes\n")); |
| 1047 | |
| 1048 | goto out_teardown_dma_pools; |
| 1049 | } |
| 1050 | |
| 1051 | ccb->epthru = (mraid_epassthru_t *) |
| 1052 | epthru_pci_blk[i].vaddr; |
| 1053 | ccb->epthru_dma_h = epthru_pci_blk[i].dma_addr; |
| 1054 | ccb->pthru = (mraid_passthru_t *)ccb->epthru; |
| 1055 | ccb->pthru_dma_h = ccb->epthru_dma_h; |
| 1056 | |
| 1057 | |
| 1058 | ccb->sgl64 = (mbox_sgl64 *)sg_pci_blk[i].vaddr; |
| 1059 | ccb->sgl_dma_h = sg_pci_blk[i].dma_addr; |
| 1060 | ccb->sgl32 = (mbox_sgl32 *)ccb->sgl64; |
| 1061 | |
| 1062 | scb->ccb = (caddr_t)ccb; |
| 1063 | scb->gp = 0; |
| 1064 | |
| 1065 | scb->sno = i; // command index |
| 1066 | |
| 1067 | scb->scp = NULL; |
| 1068 | scb->state = SCB_FREE; |
| 1069 | scb->dma_direction = PCI_DMA_NONE; |
| 1070 | scb->dma_type = MRAID_DMA_NONE; |
| 1071 | scb->dev_channel = -1; |
| 1072 | scb->dev_target = -1; |
| 1073 | |
| 1074 | // put scb in the free pool |
| 1075 | list_add_tail(&scb->list, &adapter->kscb_pool); |
| 1076 | } |
| 1077 | |
| 1078 | return 0; |
| 1079 | |
| 1080 | out_teardown_dma_pools: |
| 1081 | megaraid_mbox_teardown_dma_pools(adapter); |
| 1082 | out_free_scb_list: |
| 1083 | kfree(adapter->kscb_list); |
| 1084 | out_free_ibuf: |
| 1085 | pci_free_consistent(pdev, MBOX_IBUF_SIZE, (void *)adapter->ibuf, |
| 1086 | adapter->ibuf_dma_h); |
| 1087 | out_free_common_mbox: |
| 1088 | pci_free_consistent(adapter->pdev, sizeof(mbox64_t), |
| 1089 | (caddr_t)raid_dev->una_mbox64, raid_dev->una_mbox64_dma); |
| 1090 | |
| 1091 | return -1; |
| 1092 | } |
| 1093 | |
| 1094 | |
| 1095 | /** |
| 1096 | * megaraid_free_cmd_packets - free memory |
| 1097 | * @param adapter : soft state of the raid controller |
| 1098 | * |
| 1099 | * Release memory resources allocated for commands |
| 1100 | */ |
| 1101 | static void |
| 1102 | megaraid_free_cmd_packets(adapter_t *adapter) |
| 1103 | { |
| 1104 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 1105 | |
| 1106 | megaraid_mbox_teardown_dma_pools(adapter); |
| 1107 | |
| 1108 | kfree(adapter->kscb_list); |
| 1109 | |
| 1110 | pci_free_consistent(adapter->pdev, MBOX_IBUF_SIZE, |
| 1111 | (void *)adapter->ibuf, adapter->ibuf_dma_h); |
| 1112 | |
| 1113 | pci_free_consistent(adapter->pdev, sizeof(mbox64_t), |
| 1114 | (caddr_t)raid_dev->una_mbox64, raid_dev->una_mbox64_dma); |
| 1115 | return; |
| 1116 | } |
| 1117 | |
| 1118 | |
| 1119 | /** |
| 1120 | * megaraid_mbox_setup_dma_pools - setup dma pool for command packets |
| 1121 | * @param adapter : HBA soft state |
| 1122 | * |
| 1123 | * setup the dma pools for mailbox, passthru and extended passthru structures, |
| 1124 | * and scatter-gather lists |
| 1125 | */ |
| 1126 | static int |
| 1127 | megaraid_mbox_setup_dma_pools(adapter_t *adapter) |
| 1128 | { |
| 1129 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 1130 | struct mraid_pci_blk *epthru_pci_blk; |
| 1131 | struct mraid_pci_blk *sg_pci_blk; |
| 1132 | struct mraid_pci_blk *mbox_pci_blk; |
| 1133 | int i; |
| 1134 | |
| 1135 | |
| 1136 | |
| 1137 | // Allocate memory for 16-bytes aligned mailboxes |
| 1138 | raid_dev->mbox_pool_handle = pci_pool_create("megaraid mbox pool", |
| 1139 | adapter->pdev, |
| 1140 | sizeof(mbox64_t) + 16, |
| 1141 | 16, 0); |
| 1142 | |
| 1143 | if (raid_dev->mbox_pool_handle == NULL) { |
| 1144 | goto fail_setup_dma_pool; |
| 1145 | } |
| 1146 | |
| 1147 | mbox_pci_blk = raid_dev->mbox_pool; |
| 1148 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { |
| 1149 | mbox_pci_blk[i].vaddr = pci_pool_alloc( |
| 1150 | raid_dev->mbox_pool_handle, |
| 1151 | GFP_KERNEL, |
| 1152 | &mbox_pci_blk[i].dma_addr); |
| 1153 | if (!mbox_pci_blk[i].vaddr) { |
| 1154 | goto fail_setup_dma_pool; |
| 1155 | } |
| 1156 | } |
| 1157 | |
| 1158 | /* |
| 1159 | * Allocate memory for each embedded passthru strucuture pointer |
| 1160 | * Request for a 128 bytes aligned structure for each passthru command |
| 1161 | * structure |
| 1162 | * Since passthru and extended passthru commands are exclusive, they |
| 1163 | * share common memory pool. Passthru structures piggyback on memory |
| 1164 | * allocted to extended passthru since passthru is smaller of the two |
| 1165 | */ |
| 1166 | raid_dev->epthru_pool_handle = pci_pool_create("megaraid mbox pthru", |
| 1167 | adapter->pdev, sizeof(mraid_epassthru_t), 128, 0); |
| 1168 | |
| 1169 | if (raid_dev->epthru_pool_handle == NULL) { |
| 1170 | goto fail_setup_dma_pool; |
| 1171 | } |
| 1172 | |
| 1173 | epthru_pci_blk = raid_dev->epthru_pool; |
| 1174 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { |
| 1175 | epthru_pci_blk[i].vaddr = pci_pool_alloc( |
| 1176 | raid_dev->epthru_pool_handle, |
| 1177 | GFP_KERNEL, |
| 1178 | &epthru_pci_blk[i].dma_addr); |
| 1179 | if (!epthru_pci_blk[i].vaddr) { |
| 1180 | goto fail_setup_dma_pool; |
| 1181 | } |
| 1182 | } |
| 1183 | |
| 1184 | |
| 1185 | // Allocate memory for each scatter-gather list. Request for 512 bytes |
| 1186 | // alignment for each sg list |
| 1187 | raid_dev->sg_pool_handle = pci_pool_create("megaraid mbox sg", |
| 1188 | adapter->pdev, |
| 1189 | sizeof(mbox_sgl64) * MBOX_MAX_SG_SIZE, |
| 1190 | 512, 0); |
| 1191 | |
| 1192 | if (raid_dev->sg_pool_handle == NULL) { |
| 1193 | goto fail_setup_dma_pool; |
| 1194 | } |
| 1195 | |
| 1196 | sg_pci_blk = raid_dev->sg_pool; |
| 1197 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { |
| 1198 | sg_pci_blk[i].vaddr = pci_pool_alloc( |
| 1199 | raid_dev->sg_pool_handle, |
| 1200 | GFP_KERNEL, |
| 1201 | &sg_pci_blk[i].dma_addr); |
| 1202 | if (!sg_pci_blk[i].vaddr) { |
| 1203 | goto fail_setup_dma_pool; |
| 1204 | } |
| 1205 | } |
| 1206 | |
| 1207 | return 0; |
| 1208 | |
| 1209 | fail_setup_dma_pool: |
| 1210 | megaraid_mbox_teardown_dma_pools(adapter); |
| 1211 | return -1; |
| 1212 | } |
| 1213 | |
| 1214 | |
| 1215 | /** |
| 1216 | * megaraid_mbox_teardown_dma_pools - teardown dma pools for command packets |
| 1217 | * @param adapter : HBA soft state |
| 1218 | * |
| 1219 | * teardown the dma pool for mailbox, passthru and extended passthru |
| 1220 | * structures, and scatter-gather lists |
| 1221 | */ |
| 1222 | static void |
| 1223 | megaraid_mbox_teardown_dma_pools(adapter_t *adapter) |
| 1224 | { |
| 1225 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 1226 | struct mraid_pci_blk *epthru_pci_blk; |
| 1227 | struct mraid_pci_blk *sg_pci_blk; |
| 1228 | struct mraid_pci_blk *mbox_pci_blk; |
| 1229 | int i; |
| 1230 | |
| 1231 | |
| 1232 | sg_pci_blk = raid_dev->sg_pool; |
| 1233 | for (i = 0; i < MBOX_MAX_SCSI_CMDS && sg_pci_blk[i].vaddr; i++) { |
| 1234 | pci_pool_free(raid_dev->sg_pool_handle, sg_pci_blk[i].vaddr, |
| 1235 | sg_pci_blk[i].dma_addr); |
| 1236 | } |
| 1237 | if (raid_dev->sg_pool_handle) |
| 1238 | pci_pool_destroy(raid_dev->sg_pool_handle); |
| 1239 | |
| 1240 | |
| 1241 | epthru_pci_blk = raid_dev->epthru_pool; |
| 1242 | for (i = 0; i < MBOX_MAX_SCSI_CMDS && epthru_pci_blk[i].vaddr; i++) { |
| 1243 | pci_pool_free(raid_dev->epthru_pool_handle, |
| 1244 | epthru_pci_blk[i].vaddr, epthru_pci_blk[i].dma_addr); |
| 1245 | } |
| 1246 | if (raid_dev->epthru_pool_handle) |
| 1247 | pci_pool_destroy(raid_dev->epthru_pool_handle); |
| 1248 | |
| 1249 | |
| 1250 | mbox_pci_blk = raid_dev->mbox_pool; |
| 1251 | for (i = 0; i < MBOX_MAX_SCSI_CMDS && mbox_pci_blk[i].vaddr; i++) { |
| 1252 | pci_pool_free(raid_dev->mbox_pool_handle, |
| 1253 | mbox_pci_blk[i].vaddr, mbox_pci_blk[i].dma_addr); |
| 1254 | } |
| 1255 | if (raid_dev->mbox_pool_handle) |
| 1256 | pci_pool_destroy(raid_dev->mbox_pool_handle); |
| 1257 | |
| 1258 | return; |
| 1259 | } |
| 1260 | |
| 1261 | |
| 1262 | /** |
| 1263 | * megaraid_alloc_scb - detach and return a scb from the free list |
| 1264 | * @adapter : controller's soft state |
| 1265 | * |
| 1266 | * return the scb from the head of the free list. NULL if there are none |
| 1267 | * available |
| 1268 | **/ |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame] | 1269 | static scb_t * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1270 | megaraid_alloc_scb(adapter_t *adapter, struct scsi_cmnd *scp) |
| 1271 | { |
| 1272 | struct list_head *head = &adapter->kscb_pool; |
| 1273 | scb_t *scb = NULL; |
| 1274 | unsigned long flags; |
| 1275 | |
| 1276 | // detach scb from free pool |
| 1277 | spin_lock_irqsave(SCSI_FREE_LIST_LOCK(adapter), flags); |
| 1278 | |
| 1279 | if (list_empty(head)) { |
| 1280 | spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter), flags); |
| 1281 | return NULL; |
| 1282 | } |
| 1283 | |
| 1284 | scb = list_entry(head->next, scb_t, list); |
| 1285 | list_del_init(&scb->list); |
| 1286 | |
| 1287 | spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter), flags); |
| 1288 | |
| 1289 | scb->state = SCB_ACTIVE; |
| 1290 | scb->scp = scp; |
| 1291 | scb->dma_type = MRAID_DMA_NONE; |
| 1292 | |
| 1293 | return scb; |
| 1294 | } |
| 1295 | |
| 1296 | |
| 1297 | /** |
| 1298 | * megaraid_dealloc_scb - return the scb to the free pool |
| 1299 | * @adapter : controller's soft state |
| 1300 | * @scb : scb to be freed |
| 1301 | * |
| 1302 | * return the scb back to the free list of scbs. The caller must 'flush' the |
| 1303 | * SCB before calling us. E.g., performing pci_unamp and/or pci_sync etc. |
| 1304 | * NOTE NOTE: Make sure the scb is not on any list before calling this |
| 1305 | * routine. |
| 1306 | **/ |
| 1307 | static inline void |
| 1308 | megaraid_dealloc_scb(adapter_t *adapter, scb_t *scb) |
| 1309 | { |
| 1310 | unsigned long flags; |
| 1311 | |
| 1312 | // put scb in the free pool |
| 1313 | scb->state = SCB_FREE; |
| 1314 | scb->scp = NULL; |
| 1315 | spin_lock_irqsave(SCSI_FREE_LIST_LOCK(adapter), flags); |
| 1316 | |
| 1317 | list_add(&scb->list, &adapter->kscb_pool); |
| 1318 | |
| 1319 | spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter), flags); |
| 1320 | |
| 1321 | return; |
| 1322 | } |
| 1323 | |
| 1324 | |
| 1325 | /** |
| 1326 | * megaraid_mbox_mksgl - make the scatter-gather list |
| 1327 | * @adapter - controller's soft state |
| 1328 | * @scb - scsi control block |
| 1329 | * |
| 1330 | * prepare the scatter-gather list |
| 1331 | */ |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame] | 1332 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1333 | megaraid_mbox_mksgl(adapter_t *adapter, scb_t *scb) |
| 1334 | { |
| 1335 | struct scatterlist *sgl; |
| 1336 | mbox_ccb_t *ccb; |
| 1337 | struct page *page; |
| 1338 | unsigned long offset; |
| 1339 | struct scsi_cmnd *scp; |
| 1340 | int sgcnt; |
| 1341 | int i; |
| 1342 | |
| 1343 | |
| 1344 | scp = scb->scp; |
| 1345 | ccb = (mbox_ccb_t *)scb->ccb; |
| 1346 | |
| 1347 | // no mapping required if no data to be transferred |
| 1348 | if (!scp->request_buffer || !scp->request_bufflen) |
| 1349 | return 0; |
| 1350 | |
| 1351 | if (!scp->use_sg) { /* scatter-gather list not used */ |
| 1352 | |
| 1353 | page = virt_to_page(scp->request_buffer); |
| 1354 | |
| 1355 | offset = ((unsigned long)scp->request_buffer & ~PAGE_MASK); |
| 1356 | |
| 1357 | ccb->buf_dma_h = pci_map_page(adapter->pdev, page, offset, |
| 1358 | scp->request_bufflen, |
| 1359 | scb->dma_direction); |
| 1360 | scb->dma_type = MRAID_DMA_WBUF; |
| 1361 | |
| 1362 | /* |
| 1363 | * We need to handle special 64-bit commands that need a |
| 1364 | * minimum of 1 SG |
| 1365 | */ |
| 1366 | sgcnt = 1; |
| 1367 | ccb->sgl64[0].address = ccb->buf_dma_h; |
| 1368 | ccb->sgl64[0].length = scp->request_bufflen; |
| 1369 | |
| 1370 | return sgcnt; |
| 1371 | } |
| 1372 | |
| 1373 | sgl = (struct scatterlist *)scp->request_buffer; |
| 1374 | |
| 1375 | // The number of sg elements returned must not exceed our limit |
| 1376 | sgcnt = pci_map_sg(adapter->pdev, sgl, scp->use_sg, |
| 1377 | scb->dma_direction); |
| 1378 | |
| 1379 | if (sgcnt > adapter->sglen) { |
| 1380 | con_log(CL_ANN, (KERN_CRIT |
| 1381 | "megaraid critical: too many sg elements:%d\n", |
| 1382 | sgcnt)); |
| 1383 | BUG(); |
| 1384 | } |
| 1385 | |
| 1386 | scb->dma_type = MRAID_DMA_WSG; |
| 1387 | |
| 1388 | for (i = 0; i < sgcnt; i++, sgl++) { |
| 1389 | ccb->sgl64[i].address = sg_dma_address(sgl); |
| 1390 | ccb->sgl64[i].length = sg_dma_len(sgl); |
| 1391 | } |
| 1392 | |
| 1393 | // Return count of SG nodes |
| 1394 | return sgcnt; |
| 1395 | } |
| 1396 | |
| 1397 | |
| 1398 | /** |
| 1399 | * mbox_post_cmd - issue a mailbox command |
| 1400 | * @adapter - controller's soft state |
| 1401 | * @scb - command to be issued |
| 1402 | * |
| 1403 | * post the command to the controller if mailbox is availble. |
| 1404 | */ |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame] | 1405 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1406 | mbox_post_cmd(adapter_t *adapter, scb_t *scb) |
| 1407 | { |
| 1408 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 1409 | mbox64_t *mbox64; |
| 1410 | mbox_t *mbox; |
| 1411 | mbox_ccb_t *ccb; |
| 1412 | unsigned long flags; |
| 1413 | unsigned int i = 0; |
| 1414 | |
| 1415 | |
| 1416 | ccb = (mbox_ccb_t *)scb->ccb; |
| 1417 | mbox = raid_dev->mbox; |
| 1418 | mbox64 = raid_dev->mbox64; |
| 1419 | |
| 1420 | /* |
| 1421 | * Check for busy mailbox. If it is, return failure - the caller |
| 1422 | * should retry later. |
| 1423 | */ |
| 1424 | spin_lock_irqsave(MAILBOX_LOCK(raid_dev), flags); |
| 1425 | |
| 1426 | if (unlikely(mbox->busy)) { |
| 1427 | do { |
| 1428 | udelay(1); |
| 1429 | i++; |
| 1430 | rmb(); |
| 1431 | } while(mbox->busy && (i < max_mbox_busy_wait)); |
| 1432 | |
| 1433 | if (mbox->busy) { |
| 1434 | |
| 1435 | spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev), flags); |
| 1436 | |
| 1437 | return -1; |
| 1438 | } |
| 1439 | } |
| 1440 | |
| 1441 | |
| 1442 | // Copy this command's mailbox data into "adapter's" mailbox |
| 1443 | memcpy((caddr_t)mbox64, (caddr_t)ccb->mbox64, 22); |
| 1444 | mbox->cmdid = scb->sno; |
| 1445 | |
| 1446 | adapter->outstanding_cmds++; |
| 1447 | |
| 1448 | if (scb->dma_direction == PCI_DMA_TODEVICE) { |
| 1449 | if (!scb->scp->use_sg) { // sg list not used |
| 1450 | pci_dma_sync_single_for_device(adapter->pdev, |
| 1451 | ccb->buf_dma_h, |
| 1452 | scb->scp->request_bufflen, |
| 1453 | PCI_DMA_TODEVICE); |
| 1454 | } |
| 1455 | else { |
| 1456 | pci_dma_sync_sg_for_device(adapter->pdev, |
| 1457 | scb->scp->request_buffer, |
| 1458 | scb->scp->use_sg, PCI_DMA_TODEVICE); |
| 1459 | } |
| 1460 | } |
| 1461 | |
| 1462 | mbox->busy = 1; // Set busy |
| 1463 | mbox->poll = 0; |
| 1464 | mbox->ack = 0; |
| 1465 | wmb(); |
| 1466 | |
| 1467 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); |
| 1468 | |
| 1469 | spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev), flags); |
| 1470 | |
| 1471 | return 0; |
| 1472 | } |
| 1473 | |
| 1474 | |
| 1475 | /** |
| 1476 | * megaraid_queue_command - generic queue entry point for all LLDs |
| 1477 | * @scp : pointer to the scsi command to be executed |
| 1478 | * @done : callback routine to be called after the cmd has be completed |
| 1479 | * |
| 1480 | * Queue entry point for mailbox based controllers. |
| 1481 | */ |
| 1482 | static int |
| 1483 | megaraid_queue_command(struct scsi_cmnd *scp, void (* done)(struct scsi_cmnd *)) |
| 1484 | { |
| 1485 | adapter_t *adapter; |
| 1486 | scb_t *scb; |
| 1487 | int if_busy; |
| 1488 | |
| 1489 | adapter = SCP2ADAPTER(scp); |
| 1490 | scp->scsi_done = done; |
| 1491 | scp->result = 0; |
| 1492 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1493 | /* |
| 1494 | * Allocate and build a SCB request |
| 1495 | * if_busy flag will be set if megaraid_mbox_build_cmd() command could |
| 1496 | * not allocate scb. We will return non-zero status in that case. |
| 1497 | * NOTE: scb can be null even though certain commands completed |
| 1498 | * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, it would |
| 1499 | * return 0 in that case, and we would do the callback right away. |
| 1500 | */ |
| 1501 | if_busy = 0; |
Christoph Hellwig | f2c8dc4 | 2005-10-31 21:06:02 +0100 | [diff] [blame] | 1502 | scb = megaraid_mbox_build_cmd(adapter, scp, &if_busy); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1503 | if (!scb) { // command already completed |
| 1504 | done(scp); |
| 1505 | return 0; |
| 1506 | } |
| 1507 | |
Christoph Hellwig | f2c8dc4 | 2005-10-31 21:06:02 +0100 | [diff] [blame] | 1508 | megaraid_mbox_runpendq(adapter, scb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1509 | return if_busy; |
| 1510 | } |
| 1511 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1512 | /** |
| 1513 | * megaraid_mbox_build_cmd - transform the mid-layer scsi command to megaraid |
| 1514 | * firmware lingua |
| 1515 | * @adapter - controller's soft state |
| 1516 | * @scp - mid-layer scsi command pointer |
| 1517 | * @busy - set if request could not be completed because of lack of |
| 1518 | * resources |
| 1519 | * |
| 1520 | * convert the command issued by mid-layer to format understood by megaraid |
| 1521 | * firmware. We also complete certain command without sending them to firmware |
| 1522 | */ |
| 1523 | static scb_t * |
| 1524 | megaraid_mbox_build_cmd(adapter_t *adapter, struct scsi_cmnd *scp, int *busy) |
| 1525 | { |
| 1526 | mraid_device_t *rdev = ADAP2RAIDDEV(adapter); |
| 1527 | int channel; |
| 1528 | int target; |
| 1529 | int islogical; |
| 1530 | mbox_ccb_t *ccb; |
| 1531 | mraid_passthru_t *pthru; |
| 1532 | mbox64_t *mbox64; |
| 1533 | mbox_t *mbox; |
| 1534 | scb_t *scb; |
| 1535 | char skip[] = "skipping"; |
| 1536 | char scan[] = "scanning"; |
| 1537 | char *ss; |
| 1538 | |
| 1539 | |
| 1540 | /* |
| 1541 | * Get the appropriate device map for the device this command is |
| 1542 | * intended for |
| 1543 | */ |
| 1544 | MRAID_GET_DEVICE_MAP(adapter, scp, channel, target, islogical); |
| 1545 | |
| 1546 | /* |
| 1547 | * Logical drive commands |
| 1548 | */ |
| 1549 | if (islogical) { |
| 1550 | switch (scp->cmnd[0]) { |
| 1551 | case TEST_UNIT_READY: |
| 1552 | /* |
| 1553 | * Do we support clustering and is the support enabled |
| 1554 | * If no, return success always |
| 1555 | */ |
| 1556 | if (!adapter->ha) { |
| 1557 | scp->result = (DID_OK << 16); |
| 1558 | return NULL; |
| 1559 | } |
| 1560 | |
| 1561 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { |
| 1562 | scp->result = (DID_ERROR << 16); |
| 1563 | *busy = 1; |
| 1564 | return NULL; |
| 1565 | } |
| 1566 | |
| 1567 | scb->dma_direction = scp->sc_data_direction; |
| 1568 | scb->dev_channel = 0xFF; |
| 1569 | scb->dev_target = target; |
| 1570 | ccb = (mbox_ccb_t *)scb->ccb; |
| 1571 | |
| 1572 | /* |
| 1573 | * The command id will be provided by the command |
| 1574 | * issuance routine |
| 1575 | */ |
| 1576 | ccb->raw_mbox[0] = CLUSTER_CMD; |
| 1577 | ccb->raw_mbox[2] = RESERVATION_STATUS; |
| 1578 | ccb->raw_mbox[3] = target; |
| 1579 | |
| 1580 | return scb; |
| 1581 | |
| 1582 | case MODE_SENSE: |
| 1583 | if (scp->use_sg) { |
| 1584 | struct scatterlist *sgl; |
| 1585 | caddr_t vaddr; |
| 1586 | |
| 1587 | sgl = (struct scatterlist *)scp->request_buffer; |
| 1588 | if (sgl->page) { |
| 1589 | vaddr = (caddr_t) |
| 1590 | (page_address((&sgl[0])->page) |
| 1591 | + (&sgl[0])->offset); |
| 1592 | |
| 1593 | memset(vaddr, 0, scp->cmnd[4]); |
| 1594 | } |
| 1595 | else { |
| 1596 | con_log(CL_ANN, (KERN_WARNING |
| 1597 | "megaraid mailbox: invalid sg:%d\n", |
| 1598 | __LINE__)); |
| 1599 | } |
| 1600 | } |
| 1601 | else { |
| 1602 | memset(scp->request_buffer, 0, scp->cmnd[4]); |
| 1603 | } |
| 1604 | scp->result = (DID_OK << 16); |
| 1605 | return NULL; |
| 1606 | |
| 1607 | case INQUIRY: |
| 1608 | /* |
| 1609 | * Display the channel scan for logical drives |
| 1610 | * Do not display scan for a channel if already done. |
| 1611 | */ |
| 1612 | if (!(rdev->last_disp & (1L << SCP2CHANNEL(scp)))) { |
| 1613 | |
| 1614 | con_log(CL_ANN, (KERN_INFO |
| 1615 | "scsi[%d]: scanning scsi channel %d", |
| 1616 | adapter->host->host_no, |
| 1617 | SCP2CHANNEL(scp))); |
| 1618 | |
| 1619 | con_log(CL_ANN, ( |
| 1620 | " [virtual] for logical drives\n")); |
| 1621 | |
| 1622 | rdev->last_disp |= (1L << SCP2CHANNEL(scp)); |
| 1623 | } |
| 1624 | |
| 1625 | /* Fall through */ |
| 1626 | |
| 1627 | case READ_CAPACITY: |
| 1628 | /* |
| 1629 | * Do not allow LUN > 0 for logical drives and |
| 1630 | * requests for more than 40 logical drives |
| 1631 | */ |
| 1632 | if (SCP2LUN(scp)) { |
| 1633 | scp->result = (DID_BAD_TARGET << 16); |
| 1634 | return NULL; |
| 1635 | } |
| 1636 | if ((target % 0x80) >= MAX_LOGICAL_DRIVES_40LD) { |
| 1637 | scp->result = (DID_BAD_TARGET << 16); |
| 1638 | return NULL; |
| 1639 | } |
| 1640 | |
| 1641 | |
| 1642 | /* Allocate a SCB and initialize passthru */ |
| 1643 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { |
| 1644 | scp->result = (DID_ERROR << 16); |
| 1645 | *busy = 1; |
| 1646 | return NULL; |
| 1647 | } |
| 1648 | |
| 1649 | ccb = (mbox_ccb_t *)scb->ccb; |
| 1650 | scb->dev_channel = 0xFF; |
| 1651 | scb->dev_target = target; |
| 1652 | pthru = ccb->pthru; |
| 1653 | mbox = ccb->mbox; |
| 1654 | mbox64 = ccb->mbox64; |
| 1655 | |
| 1656 | pthru->timeout = 0; |
| 1657 | pthru->ars = 1; |
| 1658 | pthru->reqsenselen = 14; |
| 1659 | pthru->islogical = 1; |
| 1660 | pthru->logdrv = target; |
| 1661 | pthru->cdblen = scp->cmd_len; |
| 1662 | memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); |
| 1663 | |
| 1664 | mbox->cmd = MBOXCMD_PASSTHRU64; |
| 1665 | scb->dma_direction = scp->sc_data_direction; |
| 1666 | |
| 1667 | pthru->dataxferlen = scp->request_bufflen; |
| 1668 | pthru->dataxferaddr = ccb->sgl_dma_h; |
| 1669 | pthru->numsge = megaraid_mbox_mksgl(adapter, |
| 1670 | scb); |
| 1671 | |
| 1672 | mbox->xferaddr = 0xFFFFFFFF; |
| 1673 | mbox64->xferaddr_lo = (uint32_t )ccb->pthru_dma_h; |
| 1674 | mbox64->xferaddr_hi = 0; |
| 1675 | |
| 1676 | return scb; |
| 1677 | |
| 1678 | case READ_6: |
| 1679 | case WRITE_6: |
| 1680 | case READ_10: |
| 1681 | case WRITE_10: |
| 1682 | case READ_12: |
| 1683 | case WRITE_12: |
| 1684 | |
| 1685 | /* |
| 1686 | * Allocate a SCB and initialize mailbox |
| 1687 | */ |
| 1688 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { |
| 1689 | scp->result = (DID_ERROR << 16); |
| 1690 | *busy = 1; |
| 1691 | return NULL; |
| 1692 | } |
| 1693 | ccb = (mbox_ccb_t *)scb->ccb; |
| 1694 | scb->dev_channel = 0xFF; |
| 1695 | scb->dev_target = target; |
| 1696 | mbox = ccb->mbox; |
| 1697 | mbox64 = ccb->mbox64; |
| 1698 | mbox->logdrv = target; |
| 1699 | |
| 1700 | /* |
| 1701 | * A little HACK: 2nd bit is zero for all scsi read |
| 1702 | * commands and is set for all scsi write commands |
| 1703 | */ |
| 1704 | mbox->cmd = (scp->cmnd[0] & 0x02) ? MBOXCMD_LWRITE64: |
| 1705 | MBOXCMD_LREAD64 ; |
| 1706 | |
| 1707 | /* |
| 1708 | * 6-byte READ(0x08) or WRITE(0x0A) cdb |
| 1709 | */ |
| 1710 | if (scp->cmd_len == 6) { |
| 1711 | mbox->numsectors = (uint32_t)scp->cmnd[4]; |
| 1712 | mbox->lba = |
| 1713 | ((uint32_t)scp->cmnd[1] << 16) | |
| 1714 | ((uint32_t)scp->cmnd[2] << 8) | |
| 1715 | (uint32_t)scp->cmnd[3]; |
| 1716 | |
| 1717 | mbox->lba &= 0x1FFFFF; |
| 1718 | } |
| 1719 | |
| 1720 | /* |
| 1721 | * 10-byte READ(0x28) or WRITE(0x2A) cdb |
| 1722 | */ |
| 1723 | else if (scp->cmd_len == 10) { |
| 1724 | mbox->numsectors = |
| 1725 | (uint32_t)scp->cmnd[8] | |
| 1726 | ((uint32_t)scp->cmnd[7] << 8); |
| 1727 | mbox->lba = |
| 1728 | ((uint32_t)scp->cmnd[2] << 24) | |
| 1729 | ((uint32_t)scp->cmnd[3] << 16) | |
| 1730 | ((uint32_t)scp->cmnd[4] << 8) | |
| 1731 | (uint32_t)scp->cmnd[5]; |
| 1732 | } |
| 1733 | |
| 1734 | /* |
| 1735 | * 12-byte READ(0xA8) or WRITE(0xAA) cdb |
| 1736 | */ |
| 1737 | else if (scp->cmd_len == 12) { |
| 1738 | mbox->lba = |
| 1739 | ((uint32_t)scp->cmnd[2] << 24) | |
| 1740 | ((uint32_t)scp->cmnd[3] << 16) | |
| 1741 | ((uint32_t)scp->cmnd[4] << 8) | |
| 1742 | (uint32_t)scp->cmnd[5]; |
| 1743 | |
| 1744 | mbox->numsectors = |
| 1745 | ((uint32_t)scp->cmnd[6] << 24) | |
| 1746 | ((uint32_t)scp->cmnd[7] << 16) | |
| 1747 | ((uint32_t)scp->cmnd[8] << 8) | |
| 1748 | (uint32_t)scp->cmnd[9]; |
| 1749 | } |
| 1750 | else { |
| 1751 | con_log(CL_ANN, (KERN_WARNING |
| 1752 | "megaraid: unsupported CDB length\n")); |
| 1753 | |
| 1754 | megaraid_dealloc_scb(adapter, scb); |
| 1755 | |
| 1756 | scp->result = (DID_ERROR << 16); |
| 1757 | return NULL; |
| 1758 | } |
| 1759 | |
| 1760 | scb->dma_direction = scp->sc_data_direction; |
| 1761 | |
| 1762 | // Calculate Scatter-Gather info |
| 1763 | mbox64->xferaddr_lo = (uint32_t )ccb->sgl_dma_h; |
| 1764 | mbox->numsge = megaraid_mbox_mksgl(adapter, |
| 1765 | scb); |
| 1766 | mbox->xferaddr = 0xFFFFFFFF; |
| 1767 | mbox64->xferaddr_hi = 0; |
| 1768 | |
| 1769 | return scb; |
| 1770 | |
| 1771 | case RESERVE: |
| 1772 | case RELEASE: |
| 1773 | /* |
| 1774 | * Do we support clustering and is the support enabled |
| 1775 | */ |
| 1776 | if (!adapter->ha) { |
| 1777 | scp->result = (DID_BAD_TARGET << 16); |
| 1778 | return NULL; |
| 1779 | } |
| 1780 | |
| 1781 | /* |
| 1782 | * Allocate a SCB and initialize mailbox |
| 1783 | */ |
| 1784 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { |
| 1785 | scp->result = (DID_ERROR << 16); |
| 1786 | *busy = 1; |
| 1787 | return NULL; |
| 1788 | } |
| 1789 | |
| 1790 | ccb = (mbox_ccb_t *)scb->ccb; |
| 1791 | scb->dev_channel = 0xFF; |
| 1792 | scb->dev_target = target; |
| 1793 | ccb->raw_mbox[0] = CLUSTER_CMD; |
| 1794 | ccb->raw_mbox[2] = (scp->cmnd[0] == RESERVE) ? |
| 1795 | RESERVE_LD : RELEASE_LD; |
| 1796 | |
| 1797 | ccb->raw_mbox[3] = target; |
| 1798 | scb->dma_direction = scp->sc_data_direction; |
| 1799 | |
| 1800 | return scb; |
| 1801 | |
| 1802 | default: |
| 1803 | scp->result = (DID_BAD_TARGET << 16); |
| 1804 | return NULL; |
| 1805 | } |
| 1806 | } |
| 1807 | else { // Passthru device commands |
| 1808 | |
| 1809 | // Do not allow access to target id > 15 or LUN > 7 |
| 1810 | if (target > 15 || SCP2LUN(scp) > 7) { |
| 1811 | scp->result = (DID_BAD_TARGET << 16); |
| 1812 | return NULL; |
| 1813 | } |
| 1814 | |
| 1815 | // if fast load option was set and scan for last device is |
| 1816 | // over, reset the fast_load flag so that during a possible |
| 1817 | // next scan, devices can be made available |
| 1818 | if (rdev->fast_load && (target == 15) && |
| 1819 | (SCP2CHANNEL(scp) == adapter->max_channel -1)) { |
| 1820 | |
| 1821 | con_log(CL_ANN, (KERN_INFO |
| 1822 | "megaraid[%d]: physical device scan re-enabled\n", |
| 1823 | adapter->host->host_no)); |
| 1824 | rdev->fast_load = 0; |
| 1825 | } |
| 1826 | |
| 1827 | /* |
| 1828 | * Display the channel scan for physical devices |
| 1829 | */ |
| 1830 | if (!(rdev->last_disp & (1L << SCP2CHANNEL(scp)))) { |
| 1831 | |
| 1832 | ss = rdev->fast_load ? skip : scan; |
| 1833 | |
| 1834 | con_log(CL_ANN, (KERN_INFO |
| 1835 | "scsi[%d]: %s scsi channel %d [Phy %d]", |
| 1836 | adapter->host->host_no, ss, SCP2CHANNEL(scp), |
| 1837 | channel)); |
| 1838 | |
| 1839 | con_log(CL_ANN, ( |
| 1840 | " for non-raid devices\n")); |
| 1841 | |
| 1842 | rdev->last_disp |= (1L << SCP2CHANNEL(scp)); |
| 1843 | } |
| 1844 | |
| 1845 | // disable channel sweep if fast load option given |
| 1846 | if (rdev->fast_load) { |
| 1847 | scp->result = (DID_BAD_TARGET << 16); |
| 1848 | return NULL; |
| 1849 | } |
| 1850 | |
| 1851 | // Allocate a SCB and initialize passthru |
| 1852 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { |
| 1853 | scp->result = (DID_ERROR << 16); |
| 1854 | *busy = 1; |
| 1855 | return NULL; |
| 1856 | } |
| 1857 | |
| 1858 | ccb = (mbox_ccb_t *)scb->ccb; |
| 1859 | scb->dev_channel = channel; |
| 1860 | scb->dev_target = target; |
| 1861 | scb->dma_direction = scp->sc_data_direction; |
| 1862 | mbox = ccb->mbox; |
| 1863 | mbox64 = ccb->mbox64; |
| 1864 | |
| 1865 | // Does this firmware support extended CDBs |
| 1866 | if (adapter->max_cdb_sz == 16) { |
| 1867 | mbox->cmd = MBOXCMD_EXTPTHRU; |
| 1868 | |
| 1869 | megaraid_mbox_prepare_epthru(adapter, scb, scp); |
| 1870 | |
| 1871 | mbox64->xferaddr_lo = (uint32_t)ccb->epthru_dma_h; |
| 1872 | mbox64->xferaddr_hi = 0; |
| 1873 | mbox->xferaddr = 0xFFFFFFFF; |
| 1874 | } |
| 1875 | else { |
| 1876 | mbox->cmd = MBOXCMD_PASSTHRU64; |
| 1877 | |
| 1878 | megaraid_mbox_prepare_pthru(adapter, scb, scp); |
| 1879 | |
| 1880 | mbox64->xferaddr_lo = (uint32_t)ccb->pthru_dma_h; |
| 1881 | mbox64->xferaddr_hi = 0; |
| 1882 | mbox->xferaddr = 0xFFFFFFFF; |
| 1883 | } |
| 1884 | return scb; |
| 1885 | } |
| 1886 | |
| 1887 | // NOT REACHED |
| 1888 | } |
| 1889 | |
| 1890 | |
| 1891 | /** |
| 1892 | * megaraid_mbox_runpendq - execute commands queued in the pending queue |
| 1893 | * @adapter : controller's soft state |
| 1894 | * @scb : SCB to be queued in the pending list |
| 1895 | * |
| 1896 | * scan the pending list for commands which are not yet issued and try to |
| 1897 | * post to the controller. The SCB can be a null pointer, which would indicate |
| 1898 | * no SCB to be queue, just try to execute the ones in the pending list. |
| 1899 | * |
| 1900 | * NOTE: We do not actually traverse the pending list. The SCBs are plucked |
| 1901 | * out from the head of the pending list. If it is successfully issued, the |
| 1902 | * next SCB is at the head now. |
| 1903 | */ |
| 1904 | static void |
| 1905 | megaraid_mbox_runpendq(adapter_t *adapter, scb_t *scb_q) |
| 1906 | { |
| 1907 | scb_t *scb; |
| 1908 | unsigned long flags; |
| 1909 | |
| 1910 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); |
| 1911 | |
| 1912 | if (scb_q) { |
| 1913 | scb_q->state = SCB_PENDQ; |
| 1914 | list_add_tail(&scb_q->list, &adapter->pend_list); |
| 1915 | } |
| 1916 | |
| 1917 | // if the adapter in not in quiescent mode, post the commands to FW |
| 1918 | if (adapter->quiescent) { |
| 1919 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); |
| 1920 | return; |
| 1921 | } |
| 1922 | |
| 1923 | while (!list_empty(&adapter->pend_list)) { |
| 1924 | |
| 1925 | assert_spin_locked(PENDING_LIST_LOCK(adapter)); |
| 1926 | |
| 1927 | scb = list_entry(adapter->pend_list.next, scb_t, list); |
| 1928 | |
| 1929 | // remove the scb from the pending list and try to |
| 1930 | // issue. If we are unable to issue it, put back in |
| 1931 | // the pending list and return |
| 1932 | |
| 1933 | list_del_init(&scb->list); |
| 1934 | |
| 1935 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); |
| 1936 | |
| 1937 | // if mailbox was busy, return SCB back to pending |
| 1938 | // list. Make sure to add at the head, since that's |
| 1939 | // where it would have been removed from |
| 1940 | |
| 1941 | scb->state = SCB_ISSUED; |
| 1942 | |
| 1943 | if (mbox_post_cmd(adapter, scb) != 0) { |
| 1944 | |
| 1945 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); |
| 1946 | |
| 1947 | scb->state = SCB_PENDQ; |
| 1948 | |
| 1949 | list_add(&scb->list, &adapter->pend_list); |
| 1950 | |
| 1951 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), |
| 1952 | flags); |
| 1953 | |
| 1954 | return; |
| 1955 | } |
| 1956 | |
| 1957 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); |
| 1958 | } |
| 1959 | |
| 1960 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); |
| 1961 | |
| 1962 | |
| 1963 | return; |
| 1964 | } |
| 1965 | |
| 1966 | |
| 1967 | /** |
| 1968 | * megaraid_mbox_prepare_pthru - prepare a command for physical devices |
| 1969 | * @adapter - pointer to controller's soft state |
| 1970 | * @scb - scsi control block |
| 1971 | * @scp - scsi command from the mid-layer |
| 1972 | * |
| 1973 | * prepare a command for the scsi physical devices |
| 1974 | */ |
| 1975 | static void |
| 1976 | megaraid_mbox_prepare_pthru(adapter_t *adapter, scb_t *scb, |
| 1977 | struct scsi_cmnd *scp) |
| 1978 | { |
| 1979 | mbox_ccb_t *ccb; |
| 1980 | mraid_passthru_t *pthru; |
| 1981 | uint8_t channel; |
| 1982 | uint8_t target; |
| 1983 | |
| 1984 | ccb = (mbox_ccb_t *)scb->ccb; |
| 1985 | pthru = ccb->pthru; |
| 1986 | channel = scb->dev_channel; |
| 1987 | target = scb->dev_target; |
| 1988 | |
| 1989 | // 0=6sec, 1=60sec, 2=10min, 3=3hrs, 4=NO timeout |
| 1990 | pthru->timeout = 4; |
| 1991 | pthru->ars = 1; |
| 1992 | pthru->islogical = 0; |
| 1993 | pthru->channel = 0; |
| 1994 | pthru->target = (channel << 4) | target; |
| 1995 | pthru->logdrv = SCP2LUN(scp); |
| 1996 | pthru->reqsenselen = 14; |
| 1997 | pthru->cdblen = scp->cmd_len; |
| 1998 | |
| 1999 | memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); |
| 2000 | |
| 2001 | if (scp->request_bufflen) { |
| 2002 | pthru->dataxferlen = scp->request_bufflen; |
| 2003 | pthru->dataxferaddr = ccb->sgl_dma_h; |
| 2004 | pthru->numsge = megaraid_mbox_mksgl(adapter, scb); |
| 2005 | } |
| 2006 | else { |
| 2007 | pthru->dataxferaddr = 0; |
| 2008 | pthru->dataxferlen = 0; |
| 2009 | pthru->numsge = 0; |
| 2010 | } |
| 2011 | return; |
| 2012 | } |
| 2013 | |
| 2014 | |
| 2015 | /** |
| 2016 | * megaraid_mbox_prepare_epthru - prepare a command for physical devices |
| 2017 | * @adapter - pointer to controller's soft state |
| 2018 | * @scb - scsi control block |
| 2019 | * @scp - scsi command from the mid-layer |
| 2020 | * |
| 2021 | * prepare a command for the scsi physical devices. This rountine prepares |
| 2022 | * commands for devices which can take extended CDBs (>10 bytes) |
| 2023 | */ |
| 2024 | static void |
| 2025 | megaraid_mbox_prepare_epthru(adapter_t *adapter, scb_t *scb, |
| 2026 | struct scsi_cmnd *scp) |
| 2027 | { |
| 2028 | mbox_ccb_t *ccb; |
| 2029 | mraid_epassthru_t *epthru; |
| 2030 | uint8_t channel; |
| 2031 | uint8_t target; |
| 2032 | |
| 2033 | ccb = (mbox_ccb_t *)scb->ccb; |
| 2034 | epthru = ccb->epthru; |
| 2035 | channel = scb->dev_channel; |
| 2036 | target = scb->dev_target; |
| 2037 | |
| 2038 | // 0=6sec, 1=60sec, 2=10min, 3=3hrs, 4=NO timeout |
| 2039 | epthru->timeout = 4; |
| 2040 | epthru->ars = 1; |
| 2041 | epthru->islogical = 0; |
| 2042 | epthru->channel = 0; |
| 2043 | epthru->target = (channel << 4) | target; |
| 2044 | epthru->logdrv = SCP2LUN(scp); |
| 2045 | epthru->reqsenselen = 14; |
| 2046 | epthru->cdblen = scp->cmd_len; |
| 2047 | |
| 2048 | memcpy(epthru->cdb, scp->cmnd, scp->cmd_len); |
| 2049 | |
| 2050 | if (scp->request_bufflen) { |
| 2051 | epthru->dataxferlen = scp->request_bufflen; |
| 2052 | epthru->dataxferaddr = ccb->sgl_dma_h; |
| 2053 | epthru->numsge = megaraid_mbox_mksgl(adapter, scb); |
| 2054 | } |
| 2055 | else { |
| 2056 | epthru->dataxferaddr = 0; |
| 2057 | epthru->dataxferlen = 0; |
| 2058 | epthru->numsge = 0; |
| 2059 | } |
| 2060 | return; |
| 2061 | } |
| 2062 | |
| 2063 | |
| 2064 | /** |
| 2065 | * megaraid_ack_sequence - interrupt ack sequence for memory mapped HBAs |
| 2066 | * @adapter - controller's soft state |
| 2067 | * |
| 2068 | * Interrupt ackrowledgement sequence for memory mapped HBAs. Find out the |
| 2069 | * completed command and put them on the completed list for later processing. |
| 2070 | * |
| 2071 | * Returns: 1 if the interrupt is valid, 0 otherwise |
| 2072 | */ |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame] | 2073 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2074 | megaraid_ack_sequence(adapter_t *adapter) |
| 2075 | { |
| 2076 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 2077 | mbox_t *mbox; |
| 2078 | scb_t *scb; |
| 2079 | uint8_t nstatus; |
| 2080 | uint8_t completed[MBOX_MAX_FIRMWARE_STATUS]; |
| 2081 | struct list_head clist; |
| 2082 | int handled; |
| 2083 | uint32_t dword; |
| 2084 | unsigned long flags; |
| 2085 | int i, j; |
| 2086 | |
| 2087 | |
| 2088 | mbox = raid_dev->mbox; |
| 2089 | |
| 2090 | // move the SCBs from the firmware completed array to our local list |
| 2091 | INIT_LIST_HEAD(&clist); |
| 2092 | |
| 2093 | // loop till F/W has more commands for us to complete |
| 2094 | handled = 0; |
| 2095 | spin_lock_irqsave(MAILBOX_LOCK(raid_dev), flags); |
| 2096 | do { |
| 2097 | /* |
| 2098 | * Check if a valid interrupt is pending. If found, force the |
| 2099 | * interrupt line low. |
| 2100 | */ |
| 2101 | dword = RDOUTDOOR(raid_dev); |
| 2102 | if (dword != 0x10001234) break; |
| 2103 | |
| 2104 | handled = 1; |
| 2105 | |
| 2106 | WROUTDOOR(raid_dev, 0x10001234); |
| 2107 | |
| 2108 | nstatus = 0; |
| 2109 | // wait for valid numstatus to post |
| 2110 | for (i = 0; i < 0xFFFFF; i++) { |
| 2111 | if (mbox->numstatus != 0xFF) { |
| 2112 | nstatus = mbox->numstatus; |
| 2113 | break; |
| 2114 | } |
| 2115 | rmb(); |
| 2116 | } |
| 2117 | mbox->numstatus = 0xFF; |
| 2118 | |
| 2119 | adapter->outstanding_cmds -= nstatus; |
| 2120 | |
| 2121 | for (i = 0; i < nstatus; i++) { |
| 2122 | |
| 2123 | // wait for valid command index to post |
| 2124 | for (j = 0; j < 0xFFFFF; j++) { |
| 2125 | if (mbox->completed[i] != 0xFF) break; |
| 2126 | rmb(); |
| 2127 | } |
| 2128 | completed[i] = mbox->completed[i]; |
| 2129 | mbox->completed[i] = 0xFF; |
| 2130 | |
| 2131 | if (completed[i] == 0xFF) { |
| 2132 | con_log(CL_ANN, (KERN_CRIT |
| 2133 | "megaraid: command posting timed out\n")); |
| 2134 | |
| 2135 | BUG(); |
| 2136 | continue; |
| 2137 | } |
| 2138 | |
| 2139 | // Get SCB associated with this command id |
| 2140 | if (completed[i] >= MBOX_MAX_SCSI_CMDS) { |
| 2141 | // a cmm command |
| 2142 | scb = adapter->uscb_list + (completed[i] - |
| 2143 | MBOX_MAX_SCSI_CMDS); |
| 2144 | } |
| 2145 | else { |
| 2146 | // an os command |
| 2147 | scb = adapter->kscb_list + completed[i]; |
| 2148 | } |
| 2149 | |
| 2150 | scb->status = mbox->status; |
| 2151 | list_add_tail(&scb->list, &clist); |
| 2152 | } |
| 2153 | |
| 2154 | // Acknowledge interrupt |
| 2155 | WRINDOOR(raid_dev, 0x02); |
| 2156 | |
| 2157 | } while(1); |
| 2158 | |
| 2159 | spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev), flags); |
| 2160 | |
| 2161 | |
| 2162 | // put the completed commands in the completed list. DPC would |
| 2163 | // complete these commands later |
| 2164 | spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter), flags); |
| 2165 | |
| 2166 | list_splice(&clist, &adapter->completed_list); |
| 2167 | |
| 2168 | spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), flags); |
| 2169 | |
| 2170 | |
| 2171 | // schedule the DPC if there is some work for it |
| 2172 | if (handled) |
| 2173 | tasklet_schedule(&adapter->dpc_h); |
| 2174 | |
| 2175 | return handled; |
| 2176 | } |
| 2177 | |
| 2178 | |
| 2179 | /** |
| 2180 | * megaraid_isr - isr for memory based mailbox based controllers |
| 2181 | * @irq - irq |
| 2182 | * @devp - pointer to our soft state |
| 2183 | * @regs - unused |
| 2184 | * |
| 2185 | * Interrupt service routine for memory-mapped mailbox controllers. |
| 2186 | */ |
| 2187 | static irqreturn_t |
| 2188 | megaraid_isr(int irq, void *devp, struct pt_regs *regs) |
| 2189 | { |
| 2190 | adapter_t *adapter = devp; |
| 2191 | int handled; |
| 2192 | |
| 2193 | handled = megaraid_ack_sequence(adapter); |
| 2194 | |
| 2195 | /* Loop through any pending requests */ |
| 2196 | if (!adapter->quiescent) { |
| 2197 | megaraid_mbox_runpendq(adapter, NULL); |
| 2198 | } |
| 2199 | |
| 2200 | return IRQ_RETVAL(handled); |
| 2201 | } |
| 2202 | |
| 2203 | |
| 2204 | /** |
| 2205 | * megaraid_mbox_sync_scb - sync kernel buffers |
| 2206 | * @adapter : controller's soft state |
| 2207 | * @scb : pointer to the resource packet |
| 2208 | * |
| 2209 | * DMA sync if required. |
| 2210 | */ |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame] | 2211 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2212 | megaraid_mbox_sync_scb(adapter_t *adapter, scb_t *scb) |
| 2213 | { |
| 2214 | mbox_ccb_t *ccb; |
| 2215 | |
| 2216 | ccb = (mbox_ccb_t *)scb->ccb; |
| 2217 | |
| 2218 | switch (scb->dma_type) { |
| 2219 | |
| 2220 | case MRAID_DMA_WBUF: |
| 2221 | if (scb->dma_direction == PCI_DMA_FROMDEVICE) { |
| 2222 | pci_dma_sync_single_for_cpu(adapter->pdev, |
| 2223 | ccb->buf_dma_h, |
| 2224 | scb->scp->request_bufflen, |
| 2225 | PCI_DMA_FROMDEVICE); |
| 2226 | } |
| 2227 | |
| 2228 | pci_unmap_page(adapter->pdev, ccb->buf_dma_h, |
| 2229 | scb->scp->request_bufflen, scb->dma_direction); |
| 2230 | |
| 2231 | break; |
| 2232 | |
| 2233 | case MRAID_DMA_WSG: |
| 2234 | if (scb->dma_direction == PCI_DMA_FROMDEVICE) { |
| 2235 | pci_dma_sync_sg_for_cpu(adapter->pdev, |
| 2236 | scb->scp->request_buffer, |
| 2237 | scb->scp->use_sg, PCI_DMA_FROMDEVICE); |
| 2238 | } |
| 2239 | |
| 2240 | pci_unmap_sg(adapter->pdev, scb->scp->request_buffer, |
| 2241 | scb->scp->use_sg, scb->dma_direction); |
| 2242 | |
| 2243 | break; |
| 2244 | |
| 2245 | default: |
| 2246 | break; |
| 2247 | } |
| 2248 | |
| 2249 | return; |
| 2250 | } |
| 2251 | |
| 2252 | |
| 2253 | /** |
| 2254 | * megaraid_mbox_dpc - the tasklet to complete the commands from completed list |
| 2255 | * @devp : pointer to HBA soft state |
| 2256 | * |
| 2257 | * Pick up the commands from the completed list and send back to the owners. |
| 2258 | * This is a reentrant function and does not assume any locks are held while |
| 2259 | * it is being called. |
| 2260 | */ |
| 2261 | static void |
| 2262 | megaraid_mbox_dpc(unsigned long devp) |
| 2263 | { |
| 2264 | adapter_t *adapter = (adapter_t *)devp; |
| 2265 | mraid_device_t *raid_dev; |
| 2266 | struct list_head clist; |
| 2267 | struct scatterlist *sgl; |
| 2268 | scb_t *scb; |
| 2269 | scb_t *tmp; |
| 2270 | struct scsi_cmnd *scp; |
| 2271 | mraid_passthru_t *pthru; |
| 2272 | mraid_epassthru_t *epthru; |
| 2273 | mbox_ccb_t *ccb; |
| 2274 | int islogical; |
| 2275 | int pdev_index; |
| 2276 | int pdev_state; |
| 2277 | mbox_t *mbox; |
| 2278 | unsigned long flags; |
| 2279 | uint8_t c; |
| 2280 | int status; |
Ju, Seokmann | c005fb4 | 2006-04-27 02:33:06 -0700 | [diff] [blame] | 2281 | uioc_t *kioc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2282 | |
| 2283 | |
| 2284 | if (!adapter) return; |
| 2285 | |
| 2286 | raid_dev = ADAP2RAIDDEV(adapter); |
| 2287 | |
| 2288 | // move the SCBs from the completed list to our local list |
| 2289 | INIT_LIST_HEAD(&clist); |
| 2290 | |
| 2291 | spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter), flags); |
| 2292 | |
| 2293 | list_splice_init(&adapter->completed_list, &clist); |
| 2294 | |
| 2295 | spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), flags); |
| 2296 | |
| 2297 | |
| 2298 | list_for_each_entry_safe(scb, tmp, &clist, list) { |
| 2299 | |
| 2300 | status = scb->status; |
| 2301 | scp = scb->scp; |
| 2302 | ccb = (mbox_ccb_t *)scb->ccb; |
| 2303 | pthru = ccb->pthru; |
| 2304 | epthru = ccb->epthru; |
| 2305 | mbox = ccb->mbox; |
| 2306 | |
| 2307 | // Make sure f/w has completed a valid command |
| 2308 | if (scb->state != SCB_ISSUED) { |
| 2309 | con_log(CL_ANN, (KERN_CRIT |
| 2310 | "megaraid critical err: invalid command %d:%d:%p\n", |
| 2311 | scb->sno, scb->state, scp)); |
| 2312 | BUG(); |
| 2313 | continue; // Must never happen! |
| 2314 | } |
| 2315 | |
| 2316 | // check for the management command and complete it right away |
| 2317 | if (scb->sno >= MBOX_MAX_SCSI_CMDS) { |
| 2318 | scb->state = SCB_FREE; |
| 2319 | scb->status = status; |
| 2320 | |
| 2321 | // remove from local clist |
| 2322 | list_del_init(&scb->list); |
| 2323 | |
Ju, Seokmann | c005fb4 | 2006-04-27 02:33:06 -0700 | [diff] [blame] | 2324 | kioc = (uioc_t *)scb->gp; |
| 2325 | kioc->status = 0; |
| 2326 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2327 | megaraid_mbox_mm_done(adapter, scb); |
| 2328 | |
| 2329 | continue; |
| 2330 | } |
| 2331 | |
| 2332 | // Was an abort issued for this command earlier |
| 2333 | if (scb->state & SCB_ABORT) { |
| 2334 | con_log(CL_ANN, (KERN_NOTICE |
| 2335 | "megaraid: aborted cmd %lx[%x] completed\n", |
| 2336 | scp->serial_number, scb->sno)); |
| 2337 | } |
| 2338 | |
| 2339 | /* |
| 2340 | * If the inquiry came of a disk drive which is not part of |
| 2341 | * any RAID array, expose it to the kernel. For this to be |
| 2342 | * enabled, user must set the "megaraid_expose_unconf_disks" |
| 2343 | * flag to 1 by specifying it on module parameter list. |
| 2344 | * This would enable data migration off drives from other |
| 2345 | * configurations. |
| 2346 | */ |
| 2347 | islogical = MRAID_IS_LOGICAL(adapter, scp); |
| 2348 | if (scp->cmnd[0] == INQUIRY && status == 0 && islogical == 0 |
| 2349 | && IS_RAID_CH(raid_dev, scb->dev_channel)) { |
| 2350 | |
| 2351 | if (scp->use_sg) { |
| 2352 | sgl = (struct scatterlist *) |
| 2353 | scp->request_buffer; |
| 2354 | |
| 2355 | if (sgl->page) { |
| 2356 | c = *(unsigned char *) |
| 2357 | (page_address((&sgl[0])->page) + |
| 2358 | (&sgl[0])->offset); |
| 2359 | } |
| 2360 | else { |
| 2361 | con_log(CL_ANN, (KERN_WARNING |
| 2362 | "megaraid mailbox: invalid sg:%d\n", |
| 2363 | __LINE__)); |
| 2364 | c = 0; |
| 2365 | } |
| 2366 | } |
| 2367 | else { |
| 2368 | c = *(uint8_t *)scp->request_buffer; |
| 2369 | } |
| 2370 | |
| 2371 | if ((c & 0x1F ) == TYPE_DISK) { |
| 2372 | pdev_index = (scb->dev_channel * 16) + |
| 2373 | scb->dev_target; |
| 2374 | pdev_state = |
| 2375 | raid_dev->pdrv_state[pdev_index] & 0x0F; |
| 2376 | |
| 2377 | if (pdev_state == PDRV_ONLINE || |
| 2378 | pdev_state == PDRV_FAILED || |
| 2379 | pdev_state == PDRV_RBLD || |
| 2380 | pdev_state == PDRV_HOTSPARE || |
| 2381 | megaraid_expose_unconf_disks == 0) { |
| 2382 | |
| 2383 | status = 0xF0; |
| 2384 | } |
| 2385 | } |
| 2386 | } |
| 2387 | |
| 2388 | // Convert MegaRAID status to Linux error code |
| 2389 | switch (status) { |
| 2390 | |
| 2391 | case 0x00: |
| 2392 | |
| 2393 | scp->result = (DID_OK << 16); |
| 2394 | break; |
| 2395 | |
| 2396 | case 0x02: |
| 2397 | |
| 2398 | /* set sense_buffer and result fields */ |
| 2399 | if (mbox->cmd == MBOXCMD_PASSTHRU || |
| 2400 | mbox->cmd == MBOXCMD_PASSTHRU64) { |
| 2401 | |
| 2402 | memcpy(scp->sense_buffer, pthru->reqsensearea, |
| 2403 | 14); |
| 2404 | |
| 2405 | scp->result = DRIVER_SENSE << 24 | |
| 2406 | DID_OK << 16 | CHECK_CONDITION << 1; |
| 2407 | } |
| 2408 | else { |
| 2409 | if (mbox->cmd == MBOXCMD_EXTPTHRU) { |
| 2410 | |
| 2411 | memcpy(scp->sense_buffer, |
| 2412 | epthru->reqsensearea, 14); |
| 2413 | |
| 2414 | scp->result = DRIVER_SENSE << 24 | |
| 2415 | DID_OK << 16 | |
| 2416 | CHECK_CONDITION << 1; |
| 2417 | } else { |
| 2418 | scp->sense_buffer[0] = 0x70; |
| 2419 | scp->sense_buffer[2] = ABORTED_COMMAND; |
| 2420 | scp->result = CHECK_CONDITION << 1; |
| 2421 | } |
| 2422 | } |
| 2423 | break; |
| 2424 | |
| 2425 | case 0x08: |
| 2426 | |
| 2427 | scp->result = DID_BUS_BUSY << 16 | status; |
| 2428 | break; |
| 2429 | |
| 2430 | default: |
| 2431 | |
| 2432 | /* |
| 2433 | * If TEST_UNIT_READY fails, we know RESERVATION_STATUS |
| 2434 | * failed |
| 2435 | */ |
| 2436 | if (scp->cmnd[0] == TEST_UNIT_READY) { |
| 2437 | scp->result = DID_ERROR << 16 | |
| 2438 | RESERVATION_CONFLICT << 1; |
| 2439 | } |
| 2440 | else |
| 2441 | /* |
| 2442 | * Error code returned is 1 if Reserve or Release |
| 2443 | * failed or the input parameter is invalid |
| 2444 | */ |
| 2445 | if (status == 1 && (scp->cmnd[0] == RESERVE || |
| 2446 | scp->cmnd[0] == RELEASE)) { |
| 2447 | |
| 2448 | scp->result = DID_ERROR << 16 | |
| 2449 | RESERVATION_CONFLICT << 1; |
| 2450 | } |
| 2451 | else { |
| 2452 | scp->result = DID_BAD_TARGET << 16 | status; |
| 2453 | } |
| 2454 | } |
| 2455 | |
| 2456 | // print a debug message for all failed commands |
| 2457 | if (status) { |
| 2458 | megaraid_mbox_display_scb(adapter, scb); |
| 2459 | } |
| 2460 | |
| 2461 | // Free our internal resources and call the mid-layer callback |
| 2462 | // routine |
| 2463 | megaraid_mbox_sync_scb(adapter, scb); |
| 2464 | |
| 2465 | // remove from local clist |
| 2466 | list_del_init(&scb->list); |
| 2467 | |
| 2468 | // put back in free list |
| 2469 | megaraid_dealloc_scb(adapter, scb); |
| 2470 | |
| 2471 | // send the scsi packet back to kernel |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2472 | scp->scsi_done(scp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2473 | } |
| 2474 | |
| 2475 | return; |
| 2476 | } |
| 2477 | |
| 2478 | |
| 2479 | /** |
| 2480 | * megaraid_abort_handler - abort the scsi command |
| 2481 | * @scp : command to be aborted |
| 2482 | * |
| 2483 | * Abort a previous SCSI request. Only commands on the pending list can be |
| 2484 | * aborted. All the commands issued to the F/W must complete. |
| 2485 | **/ |
| 2486 | static int |
Christoph Hellwig | f2c8dc4 | 2005-10-31 21:06:02 +0100 | [diff] [blame] | 2487 | megaraid_abort_handler(struct scsi_cmnd *scp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2488 | { |
| 2489 | adapter_t *adapter; |
| 2490 | mraid_device_t *raid_dev; |
| 2491 | scb_t *scb; |
| 2492 | scb_t *tmp; |
| 2493 | int found; |
| 2494 | unsigned long flags; |
| 2495 | int i; |
| 2496 | |
| 2497 | |
| 2498 | adapter = SCP2ADAPTER(scp); |
| 2499 | raid_dev = ADAP2RAIDDEV(adapter); |
| 2500 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2501 | con_log(CL_ANN, (KERN_WARNING |
| 2502 | "megaraid: aborting-%ld cmd=%x <c=%d t=%d l=%d>\n", |
| 2503 | scp->serial_number, scp->cmnd[0], SCP2CHANNEL(scp), |
| 2504 | SCP2TARGET(scp), SCP2LUN(scp))); |
| 2505 | |
| 2506 | // If FW has stopped responding, simply return failure |
| 2507 | if (raid_dev->hw_error) { |
| 2508 | con_log(CL_ANN, (KERN_NOTICE |
| 2509 | "megaraid: hw error, not aborting\n")); |
| 2510 | return FAILED; |
| 2511 | } |
| 2512 | |
| 2513 | // There might a race here, where the command was completed by the |
| 2514 | // firmware and now it is on the completed list. Before we could |
| 2515 | // complete the command to the kernel in dpc, the abort came. |
| 2516 | // Find out if this is the case to avoid the race. |
| 2517 | scb = NULL; |
| 2518 | spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter), flags); |
| 2519 | list_for_each_entry_safe(scb, tmp, &adapter->completed_list, list) { |
| 2520 | |
| 2521 | if (scb->scp == scp) { // Found command |
| 2522 | |
| 2523 | list_del_init(&scb->list); // from completed list |
| 2524 | |
| 2525 | con_log(CL_ANN, (KERN_WARNING |
| 2526 | "megaraid: %ld:%d[%d:%d], abort from completed list\n", |
| 2527 | scp->serial_number, scb->sno, |
| 2528 | scb->dev_channel, scb->dev_target)); |
| 2529 | |
| 2530 | scp->result = (DID_ABORT << 16); |
| 2531 | scp->scsi_done(scp); |
| 2532 | |
| 2533 | megaraid_dealloc_scb(adapter, scb); |
| 2534 | |
| 2535 | spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), |
| 2536 | flags); |
| 2537 | |
| 2538 | return SUCCESS; |
| 2539 | } |
| 2540 | } |
| 2541 | spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), flags); |
| 2542 | |
| 2543 | |
| 2544 | // Find out if this command is still on the pending list. If it is and |
| 2545 | // was never issued, abort and return success. If the command is owned |
| 2546 | // by the firmware, we must wait for it to complete by the FW. |
| 2547 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); |
| 2548 | list_for_each_entry_safe(scb, tmp, &adapter->pend_list, list) { |
| 2549 | |
| 2550 | if (scb->scp == scp) { // Found command |
| 2551 | |
| 2552 | list_del_init(&scb->list); // from pending list |
| 2553 | |
| 2554 | ASSERT(!(scb->state & SCB_ISSUED)); |
| 2555 | |
| 2556 | con_log(CL_ANN, (KERN_WARNING |
| 2557 | "megaraid abort: %ld[%d:%d], driver owner\n", |
| 2558 | scp->serial_number, scb->dev_channel, |
| 2559 | scb->dev_target)); |
| 2560 | |
| 2561 | scp->result = (DID_ABORT << 16); |
| 2562 | scp->scsi_done(scp); |
| 2563 | |
| 2564 | megaraid_dealloc_scb(adapter, scb); |
| 2565 | |
| 2566 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), |
| 2567 | flags); |
| 2568 | |
| 2569 | return SUCCESS; |
| 2570 | } |
| 2571 | } |
| 2572 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); |
| 2573 | |
| 2574 | |
| 2575 | // Check do we even own this command, in which case this would be |
| 2576 | // owned by the firmware. The only way to locate the FW scb is to |
| 2577 | // traverse through the list of all SCB, since driver does not |
| 2578 | // maintain these SCBs on any list |
| 2579 | found = 0; |
Christoph Hellwig | f2c8dc4 | 2005-10-31 21:06:02 +0100 | [diff] [blame] | 2580 | spin_lock_irq(&adapter->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2581 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { |
| 2582 | scb = adapter->kscb_list + i; |
| 2583 | |
| 2584 | if (scb->scp == scp) { |
| 2585 | |
| 2586 | found = 1; |
| 2587 | |
| 2588 | if (!(scb->state & SCB_ISSUED)) { |
| 2589 | con_log(CL_ANN, (KERN_WARNING |
| 2590 | "megaraid abort: %ld%d[%d:%d], invalid state\n", |
| 2591 | scp->serial_number, scb->sno, scb->dev_channel, |
| 2592 | scb->dev_target)); |
| 2593 | BUG(); |
| 2594 | } |
| 2595 | else { |
| 2596 | con_log(CL_ANN, (KERN_WARNING |
| 2597 | "megaraid abort: %ld:%d[%d:%d], fw owner\n", |
| 2598 | scp->serial_number, scb->sno, scb->dev_channel, |
| 2599 | scb->dev_target)); |
| 2600 | } |
| 2601 | } |
| 2602 | } |
Christoph Hellwig | f2c8dc4 | 2005-10-31 21:06:02 +0100 | [diff] [blame] | 2603 | spin_unlock_irq(&adapter->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2604 | |
| 2605 | if (!found) { |
| 2606 | con_log(CL_ANN, (KERN_WARNING |
| 2607 | "megaraid abort: scsi cmd:%ld, do now own\n", |
| 2608 | scp->serial_number)); |
| 2609 | |
| 2610 | // FIXME: Should there be a callback for this command? |
| 2611 | return SUCCESS; |
| 2612 | } |
| 2613 | |
| 2614 | // We cannot actually abort a command owned by firmware, return |
| 2615 | // failure and wait for reset. In host reset handler, we will find out |
| 2616 | // if the HBA is still live |
| 2617 | return FAILED; |
| 2618 | } |
| 2619 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2620 | /** |
| 2621 | * megaraid_reset_handler - device reset hadler for mailbox based driver |
| 2622 | * @scp : reference command |
| 2623 | * |
| 2624 | * Reset handler for the mailbox based controller. First try to find out if |
| 2625 | * the FW is still live, in which case the outstanding commands counter mut go |
| 2626 | * down to 0. If that happens, also issue the reservation reset command to |
| 2627 | * relinquish (possible) reservations on the logical drives connected to this |
| 2628 | * host |
| 2629 | **/ |
| 2630 | static int |
Christoph Hellwig | f2c8dc4 | 2005-10-31 21:06:02 +0100 | [diff] [blame] | 2631 | megaraid_reset_handler(struct scsi_cmnd *scp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2632 | { |
| 2633 | adapter_t *adapter; |
| 2634 | scb_t *scb; |
| 2635 | scb_t *tmp; |
| 2636 | mraid_device_t *raid_dev; |
| 2637 | unsigned long flags; |
| 2638 | uint8_t raw_mbox[sizeof(mbox_t)]; |
| 2639 | int rval; |
| 2640 | int recovery_window; |
| 2641 | int recovering; |
| 2642 | int i; |
Ju, Seokmann | c005fb4 | 2006-04-27 02:33:06 -0700 | [diff] [blame] | 2643 | uioc_t *kioc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2644 | |
| 2645 | adapter = SCP2ADAPTER(scp); |
| 2646 | raid_dev = ADAP2RAIDDEV(adapter); |
| 2647 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2648 | // return failure if adapter is not responding |
| 2649 | if (raid_dev->hw_error) { |
| 2650 | con_log(CL_ANN, (KERN_NOTICE |
| 2651 | "megaraid: hw error, cannot reset\n")); |
| 2652 | return FAILED; |
| 2653 | } |
| 2654 | |
| 2655 | |
| 2656 | // Under exceptional conditions, FW can take up to 3 minutes to |
| 2657 | // complete command processing. Wait for additional 2 minutes for the |
| 2658 | // pending commands counter to go down to 0. If it doesn't, let the |
| 2659 | // controller be marked offline |
| 2660 | // Also, reset all the commands currently owned by the driver |
| 2661 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); |
| 2662 | list_for_each_entry_safe(scb, tmp, &adapter->pend_list, list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2663 | list_del_init(&scb->list); // from pending list |
| 2664 | |
Ju, Seokmann | c005fb4 | 2006-04-27 02:33:06 -0700 | [diff] [blame] | 2665 | if (scb->sno >= MBOX_MAX_SCSI_CMDS) { |
| 2666 | con_log(CL_ANN, (KERN_WARNING |
| 2667 | "megaraid: IOCTL packet with %d[%d:%d] being reset\n", |
| 2668 | scb->sno, scb->dev_channel, scb->dev_target)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2669 | |
Ju, Seokmann | c005fb4 | 2006-04-27 02:33:06 -0700 | [diff] [blame] | 2670 | scb->status = -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2671 | |
Ju, Seokmann | c005fb4 | 2006-04-27 02:33:06 -0700 | [diff] [blame] | 2672 | kioc = (uioc_t *)scb->gp; |
| 2673 | kioc->status = -EFAULT; |
| 2674 | |
| 2675 | megaraid_mbox_mm_done(adapter, scb); |
| 2676 | } else { |
| 2677 | if (scb->scp == scp) { // Found command |
| 2678 | con_log(CL_ANN, (KERN_WARNING |
| 2679 | "megaraid: %ld:%d[%d:%d], reset from pending list\n", |
| 2680 | scp->serial_number, scb->sno, |
| 2681 | scb->dev_channel, scb->dev_target)); |
| 2682 | } else { |
| 2683 | con_log(CL_ANN, (KERN_WARNING |
| 2684 | "megaraid: IO packet with %d[%d:%d] being reset\n", |
| 2685 | scb->sno, scb->dev_channel, scb->dev_target)); |
| 2686 | } |
| 2687 | |
| 2688 | scb->scp->result = (DID_RESET << 16); |
| 2689 | scb->scp->scsi_done(scb->scp); |
| 2690 | |
| 2691 | megaraid_dealloc_scb(adapter, scb); |
| 2692 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2693 | } |
| 2694 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); |
| 2695 | |
| 2696 | if (adapter->outstanding_cmds) { |
| 2697 | con_log(CL_ANN, (KERN_NOTICE |
| 2698 | "megaraid: %d outstanding commands. Max wait %d sec\n", |
Ju, Seokmann | c005fb4 | 2006-04-27 02:33:06 -0700 | [diff] [blame] | 2699 | adapter->outstanding_cmds, |
| 2700 | (MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2701 | } |
| 2702 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2703 | recovery_window = MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT; |
| 2704 | |
| 2705 | recovering = adapter->outstanding_cmds; |
| 2706 | |
Ju, Seokmann | c005fb4 | 2006-04-27 02:33:06 -0700 | [diff] [blame] | 2707 | for (i = 0; i < recovery_window; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2708 | |
| 2709 | megaraid_ack_sequence(adapter); |
| 2710 | |
| 2711 | // print a message once every 5 seconds only |
| 2712 | if (!(i % 5)) { |
| 2713 | con_log(CL_ANN, ( |
| 2714 | "megaraid mbox: Wait for %d commands to complete:%d\n", |
| 2715 | adapter->outstanding_cmds, |
Ju, Seokmann | c005fb4 | 2006-04-27 02:33:06 -0700 | [diff] [blame] | 2716 | (MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT) - i)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2717 | } |
| 2718 | |
| 2719 | // bailout if no recovery happended in reset time |
Ju, Seokmann | c005fb4 | 2006-04-27 02:33:06 -0700 | [diff] [blame] | 2720 | if (adapter->outstanding_cmds == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2721 | break; |
| 2722 | } |
| 2723 | |
| 2724 | msleep(1000); |
| 2725 | } |
| 2726 | |
Christoph Hellwig | f2c8dc4 | 2005-10-31 21:06:02 +0100 | [diff] [blame] | 2727 | spin_lock(&adapter->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2728 | |
| 2729 | // If still outstanding commands, bail out |
| 2730 | if (adapter->outstanding_cmds) { |
| 2731 | con_log(CL_ANN, (KERN_WARNING |
| 2732 | "megaraid mbox: critical hardware error!\n")); |
| 2733 | |
| 2734 | raid_dev->hw_error = 1; |
| 2735 | |
Christoph Hellwig | f2c8dc4 | 2005-10-31 21:06:02 +0100 | [diff] [blame] | 2736 | rval = FAILED; |
| 2737 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2738 | } |
| 2739 | else { |
| 2740 | con_log(CL_ANN, (KERN_NOTICE |
| 2741 | "megaraid mbox: reset sequence completed sucessfully\n")); |
| 2742 | } |
| 2743 | |
| 2744 | |
| 2745 | // If the controller supports clustering, reset reservations |
Christoph Hellwig | f2c8dc4 | 2005-10-31 21:06:02 +0100 | [diff] [blame] | 2746 | if (!adapter->ha) { |
| 2747 | rval = SUCCESS; |
| 2748 | goto out; |
| 2749 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2750 | |
| 2751 | // clear reservations if any |
| 2752 | raw_mbox[0] = CLUSTER_CMD; |
| 2753 | raw_mbox[2] = RESET_RESERVATIONS; |
| 2754 | |
| 2755 | rval = SUCCESS; |
| 2756 | if (mbox_post_sync_cmd_fast(adapter, raw_mbox) == 0) { |
| 2757 | con_log(CL_ANN, |
| 2758 | (KERN_INFO "megaraid: reservation reset\n")); |
| 2759 | } |
| 2760 | else { |
| 2761 | rval = FAILED; |
| 2762 | con_log(CL_ANN, (KERN_WARNING |
| 2763 | "megaraid: reservation reset failed\n")); |
| 2764 | } |
| 2765 | |
Christoph Hellwig | f2c8dc4 | 2005-10-31 21:06:02 +0100 | [diff] [blame] | 2766 | out: |
| 2767 | spin_unlock_irq(&adapter->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2768 | return rval; |
| 2769 | } |
| 2770 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2771 | /* |
| 2772 | * START: internal commands library |
| 2773 | * |
| 2774 | * This section of the driver has the common routine used by the driver and |
| 2775 | * also has all the FW routines |
| 2776 | */ |
| 2777 | |
| 2778 | /** |
| 2779 | * mbox_post_sync_cmd() - blocking command to the mailbox based controllers |
| 2780 | * @adapter - controller's soft state |
| 2781 | * @raw_mbox - the mailbox |
| 2782 | * |
| 2783 | * Issue a scb in synchronous and non-interrupt mode for mailbox based |
| 2784 | * controllers |
| 2785 | */ |
| 2786 | static int |
| 2787 | mbox_post_sync_cmd(adapter_t *adapter, uint8_t raw_mbox[]) |
| 2788 | { |
| 2789 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 2790 | mbox64_t *mbox64; |
| 2791 | mbox_t *mbox; |
| 2792 | uint8_t status; |
| 2793 | int i; |
| 2794 | |
| 2795 | |
| 2796 | mbox64 = raid_dev->mbox64; |
| 2797 | mbox = raid_dev->mbox; |
| 2798 | |
| 2799 | /* |
| 2800 | * Wait until mailbox is free |
| 2801 | */ |
| 2802 | if (megaraid_busywait_mbox(raid_dev) != 0) |
| 2803 | goto blocked_mailbox; |
| 2804 | |
| 2805 | /* |
| 2806 | * Copy mailbox data into host structure |
| 2807 | */ |
| 2808 | memcpy((caddr_t)mbox, (caddr_t)raw_mbox, 16); |
| 2809 | mbox->cmdid = 0xFE; |
| 2810 | mbox->busy = 1; |
| 2811 | mbox->poll = 0; |
| 2812 | mbox->ack = 0; |
| 2813 | mbox->numstatus = 0xFF; |
| 2814 | mbox->status = 0xFF; |
| 2815 | |
| 2816 | wmb(); |
| 2817 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); |
| 2818 | |
| 2819 | // wait for maximum 1 second for status to post. If the status is not |
| 2820 | // available within 1 second, assume FW is initializing and wait |
| 2821 | // for an extended amount of time |
| 2822 | if (mbox->numstatus == 0xFF) { // status not yet available |
Alexey Dobriyan | 53b3531 | 2006-03-24 03:16:13 -0800 | [diff] [blame] | 2823 | udelay(25); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2824 | |
| 2825 | for (i = 0; mbox->numstatus == 0xFF && i < 1000; i++) { |
| 2826 | rmb(); |
| 2827 | msleep(1); |
| 2828 | } |
| 2829 | |
| 2830 | |
| 2831 | if (i == 1000) { |
| 2832 | con_log(CL_ANN, (KERN_NOTICE |
| 2833 | "megaraid mailbox: wait for FW to boot ")); |
| 2834 | |
| 2835 | for (i = 0; (mbox->numstatus == 0xFF) && |
| 2836 | (i < MBOX_RESET_WAIT); i++) { |
| 2837 | rmb(); |
| 2838 | con_log(CL_ANN, ("\b\b\b\b\b[%03d]", |
| 2839 | MBOX_RESET_WAIT - i)); |
| 2840 | msleep(1000); |
| 2841 | } |
| 2842 | |
| 2843 | if (i == MBOX_RESET_WAIT) { |
| 2844 | |
| 2845 | con_log(CL_ANN, ( |
| 2846 | "\nmegaraid mailbox: status not available\n")); |
| 2847 | |
| 2848 | return -1; |
| 2849 | } |
| 2850 | con_log(CL_ANN, ("\b\b\b\b\b[ok] \n")); |
| 2851 | } |
| 2852 | } |
| 2853 | |
| 2854 | // wait for maximum 1 second for poll semaphore |
| 2855 | if (mbox->poll != 0x77) { |
| 2856 | udelay(25); |
| 2857 | |
| 2858 | for (i = 0; (mbox->poll != 0x77) && (i < 1000); i++) { |
| 2859 | rmb(); |
| 2860 | msleep(1); |
| 2861 | } |
| 2862 | |
| 2863 | if (i == 1000) { |
| 2864 | con_log(CL_ANN, (KERN_WARNING |
| 2865 | "megaraid mailbox: could not get poll semaphore\n")); |
| 2866 | return -1; |
| 2867 | } |
| 2868 | } |
| 2869 | |
| 2870 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x2); |
| 2871 | wmb(); |
| 2872 | |
| 2873 | // wait for maximum 1 second for acknowledgement |
| 2874 | if (RDINDOOR(raid_dev) & 0x2) { |
| 2875 | udelay(25); |
| 2876 | |
| 2877 | for (i = 0; (RDINDOOR(raid_dev) & 0x2) && (i < 1000); i++) { |
| 2878 | rmb(); |
| 2879 | msleep(1); |
| 2880 | } |
| 2881 | |
| 2882 | if (i == 1000) { |
| 2883 | con_log(CL_ANN, (KERN_WARNING |
| 2884 | "megaraid mailbox: could not acknowledge\n")); |
| 2885 | return -1; |
| 2886 | } |
| 2887 | } |
| 2888 | mbox->poll = 0; |
| 2889 | mbox->ack = 0x77; |
| 2890 | |
| 2891 | status = mbox->status; |
| 2892 | |
| 2893 | // invalidate the completed command id array. After command |
| 2894 | // completion, firmware would write the valid id. |
| 2895 | mbox->numstatus = 0xFF; |
| 2896 | mbox->status = 0xFF; |
| 2897 | for (i = 0; i < MBOX_MAX_FIRMWARE_STATUS; i++) { |
| 2898 | mbox->completed[i] = 0xFF; |
| 2899 | } |
| 2900 | |
| 2901 | return status; |
| 2902 | |
| 2903 | blocked_mailbox: |
| 2904 | |
| 2905 | con_log(CL_ANN, (KERN_WARNING "megaraid: blocked mailbox\n") ); |
| 2906 | return -1; |
| 2907 | } |
| 2908 | |
| 2909 | |
| 2910 | /** |
| 2911 | * mbox_post_sync_cmd_fast - blocking command to the mailbox based controllers |
| 2912 | * @adapter - controller's soft state |
| 2913 | * @raw_mbox - the mailbox |
| 2914 | * |
| 2915 | * Issue a scb in synchronous and non-interrupt mode for mailbox based |
| 2916 | * controllers. This is a faster version of the synchronous command and |
| 2917 | * therefore can be called in interrupt-context as well |
| 2918 | */ |
| 2919 | static int |
| 2920 | mbox_post_sync_cmd_fast(adapter_t *adapter, uint8_t raw_mbox[]) |
| 2921 | { |
| 2922 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 2923 | mbox_t *mbox; |
| 2924 | long i; |
| 2925 | |
| 2926 | |
| 2927 | mbox = raid_dev->mbox; |
| 2928 | |
| 2929 | // return immediately if the mailbox is busy |
| 2930 | if (mbox->busy) return -1; |
| 2931 | |
| 2932 | // Copy mailbox data into host structure |
| 2933 | memcpy((caddr_t)mbox, (caddr_t)raw_mbox, 14); |
| 2934 | mbox->cmdid = 0xFE; |
| 2935 | mbox->busy = 1; |
| 2936 | mbox->poll = 0; |
| 2937 | mbox->ack = 0; |
| 2938 | mbox->numstatus = 0xFF; |
| 2939 | mbox->status = 0xFF; |
| 2940 | |
| 2941 | wmb(); |
| 2942 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); |
| 2943 | |
Ju, Seokmann | c005fb4 | 2006-04-27 02:33:06 -0700 | [diff] [blame] | 2944 | for (i = 0; i < MBOX_SYNC_WAIT_CNT; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2945 | if (mbox->numstatus != 0xFF) break; |
Ju, Seokmann | ed7e8ef | 2005-11-17 13:17:25 -0500 | [diff] [blame] | 2946 | rmb(); |
Ju, Seokmann | c005fb4 | 2006-04-27 02:33:06 -0700 | [diff] [blame] | 2947 | udelay(MBOX_SYNC_DELAY_200); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2948 | } |
| 2949 | |
Ju, Seokmann | c005fb4 | 2006-04-27 02:33:06 -0700 | [diff] [blame] | 2950 | if (i == MBOX_SYNC_WAIT_CNT) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2951 | // We may need to re-calibrate the counter |
| 2952 | con_log(CL_ANN, (KERN_CRIT |
| 2953 | "megaraid: fast sync command timed out\n")); |
| 2954 | } |
| 2955 | |
| 2956 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x2); |
| 2957 | wmb(); |
| 2958 | |
| 2959 | return mbox->status; |
| 2960 | } |
| 2961 | |
| 2962 | |
| 2963 | /** |
| 2964 | * megaraid_busywait_mbox() - Wait until the controller's mailbox is available |
| 2965 | * @raid_dev - RAID device (HBA) soft state |
| 2966 | * |
| 2967 | * wait until the controller's mailbox is available to accept more commands. |
| 2968 | * wait for at most 1 second |
| 2969 | */ |
| 2970 | static int |
| 2971 | megaraid_busywait_mbox(mraid_device_t *raid_dev) |
| 2972 | { |
| 2973 | mbox_t *mbox = raid_dev->mbox; |
| 2974 | int i = 0; |
| 2975 | |
| 2976 | if (mbox->busy) { |
| 2977 | udelay(25); |
| 2978 | for (i = 0; mbox->busy && i < 1000; i++) |
| 2979 | msleep(1); |
| 2980 | } |
| 2981 | |
| 2982 | if (i < 1000) return 0; |
| 2983 | else return -1; |
| 2984 | } |
| 2985 | |
| 2986 | |
| 2987 | /** |
| 2988 | * megaraid_mbox_product_info - some static information about the controller |
| 2989 | * @adapter - our soft state |
| 2990 | * |
| 2991 | * issue commands to the controller to grab some parameters required by our |
| 2992 | * caller. |
| 2993 | */ |
| 2994 | static int |
| 2995 | megaraid_mbox_product_info(adapter_t *adapter) |
| 2996 | { |
| 2997 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 2998 | mbox_t *mbox; |
| 2999 | uint8_t raw_mbox[sizeof(mbox_t)]; |
| 3000 | mraid_pinfo_t *pinfo; |
| 3001 | dma_addr_t pinfo_dma_h; |
| 3002 | mraid_inquiry3_t *mraid_inq3; |
| 3003 | int i; |
| 3004 | |
| 3005 | |
| 3006 | memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); |
| 3007 | mbox = (mbox_t *)raw_mbox; |
| 3008 | |
| 3009 | /* |
| 3010 | * Issue an ENQUIRY3 command to find out certain adapter parameters, |
| 3011 | * e.g., max channels, max commands etc. |
| 3012 | */ |
| 3013 | pinfo = pci_alloc_consistent(adapter->pdev, sizeof(mraid_pinfo_t), |
| 3014 | &pinfo_dma_h); |
| 3015 | |
| 3016 | if (pinfo == NULL) { |
| 3017 | con_log(CL_ANN, (KERN_WARNING |
| 3018 | "megaraid: out of memory, %s %d\n", __FUNCTION__, |
| 3019 | __LINE__)); |
| 3020 | |
| 3021 | return -1; |
| 3022 | } |
| 3023 | memset(pinfo, 0, sizeof(mraid_pinfo_t)); |
| 3024 | |
| 3025 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; |
| 3026 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); |
| 3027 | |
| 3028 | raw_mbox[0] = FC_NEW_CONFIG; |
| 3029 | raw_mbox[2] = NC_SUBOP_ENQUIRY3; |
| 3030 | raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; |
| 3031 | |
| 3032 | // Issue the command |
| 3033 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { |
| 3034 | |
| 3035 | con_log(CL_ANN, (KERN_WARNING "megaraid: Inquiry3 failed\n")); |
| 3036 | |
| 3037 | pci_free_consistent(adapter->pdev, sizeof(mraid_pinfo_t), |
| 3038 | pinfo, pinfo_dma_h); |
| 3039 | |
| 3040 | return -1; |
| 3041 | } |
| 3042 | |
| 3043 | /* |
| 3044 | * Collect information about state of each physical drive |
| 3045 | * attached to the controller. We will expose all the disks |
| 3046 | * which are not part of RAID |
| 3047 | */ |
| 3048 | mraid_inq3 = (mraid_inquiry3_t *)adapter->ibuf; |
| 3049 | for (i = 0; i < MBOX_MAX_PHYSICAL_DRIVES; i++) { |
| 3050 | raid_dev->pdrv_state[i] = mraid_inq3->pdrv_state[i]; |
| 3051 | } |
| 3052 | |
| 3053 | /* |
| 3054 | * Get product info for information like number of channels, |
| 3055 | * maximum commands supported. |
| 3056 | */ |
| 3057 | memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); |
| 3058 | mbox->xferaddr = (uint32_t)pinfo_dma_h; |
| 3059 | |
| 3060 | raw_mbox[0] = FC_NEW_CONFIG; |
| 3061 | raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; |
| 3062 | |
| 3063 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { |
| 3064 | |
| 3065 | con_log(CL_ANN, (KERN_WARNING |
| 3066 | "megaraid: product info failed\n")); |
| 3067 | |
| 3068 | pci_free_consistent(adapter->pdev, sizeof(mraid_pinfo_t), |
| 3069 | pinfo, pinfo_dma_h); |
| 3070 | |
| 3071 | return -1; |
| 3072 | } |
| 3073 | |
| 3074 | /* |
| 3075 | * Setup some parameters for host, as required by our caller |
| 3076 | */ |
| 3077 | adapter->max_channel = pinfo->nchannels; |
| 3078 | |
| 3079 | /* |
| 3080 | * we will export all the logical drives on a single channel. |
| 3081 | * Add 1 since inquires do not come for inititor ID |
| 3082 | */ |
| 3083 | adapter->max_target = MAX_LOGICAL_DRIVES_40LD + 1; |
| 3084 | adapter->max_lun = 8; // up to 8 LUNs for non-disk devices |
| 3085 | |
| 3086 | /* |
| 3087 | * These are the maximum outstanding commands for the scsi-layer |
| 3088 | */ |
| 3089 | adapter->max_cmds = MBOX_MAX_SCSI_CMDS; |
| 3090 | |
| 3091 | memset(adapter->fw_version, 0, VERSION_SIZE); |
| 3092 | memset(adapter->bios_version, 0, VERSION_SIZE); |
| 3093 | |
| 3094 | memcpy(adapter->fw_version, pinfo->fw_version, 4); |
| 3095 | adapter->fw_version[4] = 0; |
| 3096 | |
| 3097 | memcpy(adapter->bios_version, pinfo->bios_version, 4); |
| 3098 | adapter->bios_version[4] = 0; |
| 3099 | |
| 3100 | con_log(CL_ANN, (KERN_NOTICE |
| 3101 | "megaraid: fw version:[%s] bios version:[%s]\n", |
| 3102 | adapter->fw_version, adapter->bios_version)); |
| 3103 | |
| 3104 | pci_free_consistent(adapter->pdev, sizeof(mraid_pinfo_t), pinfo, |
| 3105 | pinfo_dma_h); |
| 3106 | |
| 3107 | return 0; |
| 3108 | } |
| 3109 | |
| 3110 | |
| 3111 | |
| 3112 | /** |
| 3113 | * megaraid_mbox_extended_cdb - check for support for extended CDBs |
| 3114 | * @adapter - soft state for the controller |
| 3115 | * |
| 3116 | * this routine check whether the controller in question supports extended |
| 3117 | * ( > 10 bytes ) CDBs |
| 3118 | */ |
| 3119 | static int |
| 3120 | megaraid_mbox_extended_cdb(adapter_t *adapter) |
| 3121 | { |
| 3122 | mbox_t *mbox; |
| 3123 | uint8_t raw_mbox[sizeof(mbox_t)]; |
| 3124 | int rval; |
| 3125 | |
| 3126 | mbox = (mbox_t *)raw_mbox; |
| 3127 | |
| 3128 | memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); |
| 3129 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; |
| 3130 | |
| 3131 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); |
| 3132 | |
| 3133 | raw_mbox[0] = MAIN_MISC_OPCODE; |
| 3134 | raw_mbox[2] = SUPPORT_EXT_CDB; |
| 3135 | |
| 3136 | /* |
| 3137 | * Issue the command |
| 3138 | */ |
| 3139 | rval = 0; |
| 3140 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { |
| 3141 | rval = -1; |
| 3142 | } |
| 3143 | |
| 3144 | return rval; |
| 3145 | } |
| 3146 | |
| 3147 | |
| 3148 | /** |
| 3149 | * megaraid_mbox_support_ha - Do we support clustering |
| 3150 | * @adapter - soft state for the controller |
| 3151 | * @init_id - ID of the initiator |
| 3152 | * |
| 3153 | * Determine if the firmware supports clustering and the ID of the initiator. |
| 3154 | */ |
| 3155 | static int |
| 3156 | megaraid_mbox_support_ha(adapter_t *adapter, uint16_t *init_id) |
| 3157 | { |
| 3158 | mbox_t *mbox; |
| 3159 | uint8_t raw_mbox[sizeof(mbox_t)]; |
| 3160 | int rval; |
| 3161 | |
| 3162 | |
| 3163 | mbox = (mbox_t *)raw_mbox; |
| 3164 | |
| 3165 | memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); |
| 3166 | |
| 3167 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; |
| 3168 | |
| 3169 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); |
| 3170 | |
| 3171 | raw_mbox[0] = GET_TARGET_ID; |
| 3172 | |
| 3173 | // Issue the command |
| 3174 | *init_id = 7; |
| 3175 | rval = -1; |
| 3176 | if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { |
| 3177 | |
| 3178 | *init_id = *(uint8_t *)adapter->ibuf; |
| 3179 | |
| 3180 | con_log(CL_ANN, (KERN_INFO |
| 3181 | "megaraid: cluster firmware, initiator ID: %d\n", |
| 3182 | *init_id)); |
| 3183 | |
| 3184 | rval = 0; |
| 3185 | } |
| 3186 | |
| 3187 | return rval; |
| 3188 | } |
| 3189 | |
| 3190 | |
| 3191 | /** |
| 3192 | * megaraid_mbox_support_random_del - Do we support random deletion |
| 3193 | * @adapter - soft state for the controller |
| 3194 | * |
| 3195 | * Determine if the firmware supports random deletion |
| 3196 | * Return: 1 is operation supported, 0 otherwise |
| 3197 | */ |
| 3198 | static int |
| 3199 | megaraid_mbox_support_random_del(adapter_t *adapter) |
| 3200 | { |
| 3201 | mbox_t *mbox; |
| 3202 | uint8_t raw_mbox[sizeof(mbox_t)]; |
| 3203 | int rval; |
| 3204 | |
| 3205 | |
| 3206 | mbox = (mbox_t *)raw_mbox; |
| 3207 | |
| 3208 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); |
| 3209 | |
| 3210 | raw_mbox[0] = FC_DEL_LOGDRV; |
| 3211 | raw_mbox[2] = OP_SUP_DEL_LOGDRV; |
| 3212 | |
| 3213 | // Issue the command |
| 3214 | rval = 0; |
| 3215 | if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { |
| 3216 | |
| 3217 | con_log(CL_DLEVEL1, ("megaraid: supports random deletion\n")); |
| 3218 | |
| 3219 | rval = 1; |
| 3220 | } |
| 3221 | |
| 3222 | return rval; |
| 3223 | } |
| 3224 | |
| 3225 | |
| 3226 | /** |
| 3227 | * megaraid_mbox_get_max_sg - maximum sg elements supported by the firmware |
| 3228 | * @adapter - soft state for the controller |
| 3229 | * |
| 3230 | * Find out the maximum number of scatter-gather elements supported by the |
| 3231 | * firmware |
| 3232 | */ |
| 3233 | static int |
| 3234 | megaraid_mbox_get_max_sg(adapter_t *adapter) |
| 3235 | { |
| 3236 | mbox_t *mbox; |
| 3237 | uint8_t raw_mbox[sizeof(mbox_t)]; |
| 3238 | int nsg; |
| 3239 | |
| 3240 | |
| 3241 | mbox = (mbox_t *)raw_mbox; |
| 3242 | |
| 3243 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); |
| 3244 | |
| 3245 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; |
| 3246 | |
| 3247 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); |
| 3248 | |
| 3249 | raw_mbox[0] = MAIN_MISC_OPCODE; |
| 3250 | raw_mbox[2] = GET_MAX_SG_SUPPORT; |
| 3251 | |
| 3252 | // Issue the command |
| 3253 | if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { |
| 3254 | nsg = *(uint8_t *)adapter->ibuf; |
| 3255 | } |
| 3256 | else { |
| 3257 | nsg = MBOX_DEFAULT_SG_SIZE; |
| 3258 | } |
| 3259 | |
| 3260 | if (nsg > MBOX_MAX_SG_SIZE) nsg = MBOX_MAX_SG_SIZE; |
| 3261 | |
| 3262 | return nsg; |
| 3263 | } |
| 3264 | |
| 3265 | |
| 3266 | /** |
| 3267 | * megaraid_mbox_enum_raid_scsi - enumerate the RAID and SCSI channels |
| 3268 | * @adapter - soft state for the controller |
| 3269 | * |
| 3270 | * Enumerate the RAID and SCSI channels for ROMB platoforms so that channels |
| 3271 | * can be exported as regular SCSI channels |
| 3272 | */ |
| 3273 | static void |
| 3274 | megaraid_mbox_enum_raid_scsi(adapter_t *adapter) |
| 3275 | { |
| 3276 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 3277 | mbox_t *mbox; |
| 3278 | uint8_t raw_mbox[sizeof(mbox_t)]; |
| 3279 | |
| 3280 | |
| 3281 | mbox = (mbox_t *)raw_mbox; |
| 3282 | |
| 3283 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); |
| 3284 | |
| 3285 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; |
| 3286 | |
| 3287 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); |
| 3288 | |
| 3289 | raw_mbox[0] = CHNL_CLASS; |
| 3290 | raw_mbox[2] = GET_CHNL_CLASS; |
| 3291 | |
| 3292 | // Issue the command. If the command fails, all channels are RAID |
| 3293 | // channels |
| 3294 | raid_dev->channel_class = 0xFF; |
| 3295 | if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { |
| 3296 | raid_dev->channel_class = *(uint8_t *)adapter->ibuf; |
| 3297 | } |
| 3298 | |
| 3299 | return; |
| 3300 | } |
| 3301 | |
| 3302 | |
| 3303 | /** |
| 3304 | * megaraid_mbox_flush_cache - flush adapter and disks cache |
| 3305 | * @param adapter : soft state for the controller |
| 3306 | * |
| 3307 | * Flush adapter cache followed by disks cache |
| 3308 | */ |
| 3309 | static void |
| 3310 | megaraid_mbox_flush_cache(adapter_t *adapter) |
| 3311 | { |
| 3312 | mbox_t *mbox; |
| 3313 | uint8_t raw_mbox[sizeof(mbox_t)]; |
| 3314 | |
| 3315 | |
| 3316 | mbox = (mbox_t *)raw_mbox; |
| 3317 | |
| 3318 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); |
| 3319 | |
| 3320 | raw_mbox[0] = FLUSH_ADAPTER; |
| 3321 | |
| 3322 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { |
| 3323 | con_log(CL_ANN, ("megaraid: flush adapter failed\n")); |
| 3324 | } |
| 3325 | |
| 3326 | raw_mbox[0] = FLUSH_SYSTEM; |
| 3327 | |
| 3328 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { |
| 3329 | con_log(CL_ANN, ("megaraid: flush disks cache failed\n")); |
| 3330 | } |
| 3331 | |
| 3332 | return; |
| 3333 | } |
| 3334 | |
| 3335 | |
| 3336 | /** |
| 3337 | * megaraid_mbox_display_scb - display SCB information, mostly debug purposes |
| 3338 | * @param adapter : controllers' soft state |
| 3339 | * @param scb : SCB to be displayed |
| 3340 | * @param level : debug level for console print |
| 3341 | * |
| 3342 | * Diplay information about the given SCB iff the current debug level is |
| 3343 | * verbose |
| 3344 | */ |
| 3345 | static void |
| 3346 | megaraid_mbox_display_scb(adapter_t *adapter, scb_t *scb) |
| 3347 | { |
| 3348 | mbox_ccb_t *ccb; |
| 3349 | struct scsi_cmnd *scp; |
| 3350 | mbox_t *mbox; |
| 3351 | int level; |
| 3352 | int i; |
| 3353 | |
| 3354 | |
| 3355 | ccb = (mbox_ccb_t *)scb->ccb; |
| 3356 | scp = scb->scp; |
| 3357 | mbox = ccb->mbox; |
| 3358 | |
| 3359 | level = CL_DLEVEL3; |
| 3360 | |
| 3361 | con_log(level, (KERN_NOTICE |
| 3362 | "megaraid mailbox: status:%#x cmd:%#x id:%#x ", scb->status, |
| 3363 | mbox->cmd, scb->sno)); |
| 3364 | |
| 3365 | con_log(level, ("sec:%#x lba:%#x addr:%#x ld:%d sg:%d\n", |
| 3366 | mbox->numsectors, mbox->lba, mbox->xferaddr, mbox->logdrv, |
| 3367 | mbox->numsge)); |
| 3368 | |
| 3369 | if (!scp) return; |
| 3370 | |
| 3371 | con_log(level, (KERN_NOTICE "scsi cmnd: ")); |
| 3372 | |
| 3373 | for (i = 0; i < scp->cmd_len; i++) { |
| 3374 | con_log(level, ("%#2.02x ", scp->cmnd[i])); |
| 3375 | } |
| 3376 | |
| 3377 | con_log(level, ("\n")); |
| 3378 | |
| 3379 | return; |
| 3380 | } |
| 3381 | |
| 3382 | |
| 3383 | /** |
| 3384 | * megaraid_mbox_setup_device_map - manage device ids |
| 3385 | * @adapter : Driver's soft state |
| 3386 | * |
| 3387 | * Manange the device ids to have an appropraite mapping between the kernel |
| 3388 | * scsi addresses and megaraid scsi and logical drive addresses. We export |
| 3389 | * scsi devices on their actual addresses, whereas the logical drives are |
| 3390 | * exported on a virtual scsi channel. |
| 3391 | **/ |
| 3392 | static void |
| 3393 | megaraid_mbox_setup_device_map(adapter_t *adapter) |
| 3394 | { |
| 3395 | uint8_t c; |
| 3396 | uint8_t t; |
| 3397 | |
| 3398 | /* |
| 3399 | * First fill the values on the logical drive channel |
| 3400 | */ |
| 3401 | for (t = 0; t < LSI_MAX_LOGICAL_DRIVES_64LD; t++) |
| 3402 | adapter->device_ids[adapter->max_channel][t] = |
| 3403 | (t < adapter->init_id) ? t : t - 1; |
| 3404 | |
| 3405 | adapter->device_ids[adapter->max_channel][adapter->init_id] = 0xFF; |
| 3406 | |
| 3407 | /* |
| 3408 | * Fill the values on the physical devices channels |
| 3409 | */ |
| 3410 | for (c = 0; c < adapter->max_channel; c++) |
| 3411 | for (t = 0; t < LSI_MAX_LOGICAL_DRIVES_64LD; t++) |
| 3412 | adapter->device_ids[c][t] = (c << 8) | t; |
| 3413 | } |
| 3414 | |
| 3415 | |
| 3416 | /* |
| 3417 | * END: internal commands library |
| 3418 | */ |
| 3419 | |
| 3420 | /* |
| 3421 | * START: Interface for the common management module |
| 3422 | * |
| 3423 | * This is the module, which interfaces with the common mangement module to |
| 3424 | * provide support for ioctl and sysfs |
| 3425 | */ |
| 3426 | |
| 3427 | /** |
| 3428 | * megaraid_cmm_register - register with the mangement module |
| 3429 | * @param adapter : HBA soft state |
| 3430 | * |
| 3431 | * Register with the management module, which allows applications to issue |
| 3432 | * ioctl calls to the drivers. This interface is used by the management module |
| 3433 | * to setup sysfs support as well. |
| 3434 | */ |
| 3435 | static int |
| 3436 | megaraid_cmm_register(adapter_t *adapter) |
| 3437 | { |
| 3438 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 3439 | mraid_mmadp_t adp; |
| 3440 | scb_t *scb; |
| 3441 | mbox_ccb_t *ccb; |
| 3442 | int rval; |
| 3443 | int i; |
| 3444 | |
| 3445 | // Allocate memory for the base list of scb for management module. |
| 3446 | adapter->uscb_list = kmalloc(sizeof(scb_t) * MBOX_MAX_USER_CMDS, |
| 3447 | GFP_KERNEL); |
| 3448 | |
| 3449 | if (adapter->uscb_list == NULL) { |
| 3450 | con_log(CL_ANN, (KERN_WARNING |
| 3451 | "megaraid: out of memory, %s %d\n", __FUNCTION__, |
| 3452 | __LINE__)); |
| 3453 | return -1; |
| 3454 | } |
| 3455 | memset(adapter->uscb_list, 0, sizeof(scb_t) * MBOX_MAX_USER_CMDS); |
| 3456 | |
| 3457 | |
| 3458 | // Initialize the synchronization parameters for resources for |
| 3459 | // commands for management module |
| 3460 | INIT_LIST_HEAD(&adapter->uscb_pool); |
| 3461 | |
| 3462 | spin_lock_init(USER_FREE_LIST_LOCK(adapter)); |
| 3463 | |
| 3464 | |
| 3465 | |
| 3466 | // link all the packets. Note, CCB for commands, coming from the |
| 3467 | // commom management module, mailbox physical address are already |
| 3468 | // setup by it. We just need placeholder for that in our local command |
| 3469 | // control blocks |
| 3470 | for (i = 0; i < MBOX_MAX_USER_CMDS; i++) { |
| 3471 | |
| 3472 | scb = adapter->uscb_list + i; |
| 3473 | ccb = raid_dev->uccb_list + i; |
| 3474 | |
| 3475 | scb->ccb = (caddr_t)ccb; |
| 3476 | ccb->mbox64 = raid_dev->umbox64 + i; |
| 3477 | ccb->mbox = &ccb->mbox64->mbox32; |
| 3478 | ccb->raw_mbox = (uint8_t *)ccb->mbox; |
| 3479 | |
| 3480 | scb->gp = 0; |
| 3481 | |
| 3482 | // COMMAND ID 0 - (MBOX_MAX_SCSI_CMDS-1) ARE RESERVED FOR |
| 3483 | // COMMANDS COMING FROM IO SUBSYSTEM (MID-LAYER) |
| 3484 | scb->sno = i + MBOX_MAX_SCSI_CMDS; |
| 3485 | |
| 3486 | scb->scp = NULL; |
| 3487 | scb->state = SCB_FREE; |
| 3488 | scb->dma_direction = PCI_DMA_NONE; |
| 3489 | scb->dma_type = MRAID_DMA_NONE; |
| 3490 | scb->dev_channel = -1; |
| 3491 | scb->dev_target = -1; |
| 3492 | |
| 3493 | // put scb in the free pool |
| 3494 | list_add_tail(&scb->list, &adapter->uscb_pool); |
| 3495 | } |
| 3496 | |
| 3497 | adp.unique_id = adapter->unique_id; |
| 3498 | adp.drvr_type = DRVRTYPE_MBOX; |
| 3499 | adp.drvr_data = (unsigned long)adapter; |
| 3500 | adp.pdev = adapter->pdev; |
| 3501 | adp.issue_uioc = megaraid_mbox_mm_handler; |
Ju, Seokmann | c005fb4 | 2006-04-27 02:33:06 -0700 | [diff] [blame] | 3502 | adp.timeout = MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3503 | adp.max_kioc = MBOX_MAX_USER_CMDS; |
| 3504 | |
| 3505 | if ((rval = mraid_mm_register_adp(&adp)) != 0) { |
| 3506 | |
| 3507 | con_log(CL_ANN, (KERN_WARNING |
| 3508 | "megaraid mbox: did not register with CMM\n")); |
| 3509 | |
| 3510 | kfree(adapter->uscb_list); |
| 3511 | } |
| 3512 | |
| 3513 | return rval; |
| 3514 | } |
| 3515 | |
| 3516 | |
| 3517 | /** |
| 3518 | * megaraid_cmm_unregister - un-register with the mangement module |
| 3519 | * @param adapter : HBA soft state |
| 3520 | * |
| 3521 | * Un-register with the management module. |
| 3522 | * FIXME: mgmt module must return failure for unregister if it has pending |
| 3523 | * commands in LLD |
| 3524 | */ |
| 3525 | static int |
| 3526 | megaraid_cmm_unregister(adapter_t *adapter) |
| 3527 | { |
| 3528 | kfree(adapter->uscb_list); |
| 3529 | mraid_mm_unregister_adp(adapter->unique_id); |
| 3530 | return 0; |
| 3531 | } |
| 3532 | |
| 3533 | |
| 3534 | /** |
| 3535 | * megaraid_mbox_mm_handler - interface for CMM to issue commands to LLD |
| 3536 | * @param drvr_data : LLD specific data |
| 3537 | * @param kioc : CMM interface packet |
| 3538 | * @param action : command action |
| 3539 | * |
| 3540 | * This routine is invoked whenever the Common Mangement Module (CMM) has a |
| 3541 | * command for us. The 'action' parameter specifies if this is a new command |
| 3542 | * or otherwise. |
| 3543 | */ |
| 3544 | static int |
| 3545 | megaraid_mbox_mm_handler(unsigned long drvr_data, uioc_t *kioc, uint32_t action) |
| 3546 | { |
| 3547 | adapter_t *adapter; |
| 3548 | |
| 3549 | if (action != IOCTL_ISSUE) { |
| 3550 | con_log(CL_ANN, (KERN_WARNING |
| 3551 | "megaraid: unsupported management action:%#2x\n", |
| 3552 | action)); |
| 3553 | return (-ENOTSUPP); |
| 3554 | } |
| 3555 | |
| 3556 | adapter = (adapter_t *)drvr_data; |
| 3557 | |
| 3558 | // make sure this adapter is not being detached right now. |
| 3559 | if (atomic_read(&adapter->being_detached)) { |
| 3560 | con_log(CL_ANN, (KERN_WARNING |
| 3561 | "megaraid: reject management request, detaching\n")); |
| 3562 | return (-ENODEV); |
| 3563 | } |
| 3564 | |
| 3565 | switch (kioc->opcode) { |
| 3566 | |
| 3567 | case GET_ADAP_INFO: |
| 3568 | |
| 3569 | kioc->status = gather_hbainfo(adapter, (mraid_hba_info_t *) |
| 3570 | (unsigned long)kioc->buf_vaddr); |
| 3571 | |
| 3572 | kioc->done(kioc); |
| 3573 | |
| 3574 | return kioc->status; |
| 3575 | |
| 3576 | case MBOX_CMD: |
| 3577 | |
| 3578 | return megaraid_mbox_mm_command(adapter, kioc); |
| 3579 | |
| 3580 | default: |
| 3581 | kioc->status = (-EINVAL); |
| 3582 | kioc->done(kioc); |
| 3583 | return (-EINVAL); |
| 3584 | } |
| 3585 | |
| 3586 | return 0; // not reached |
| 3587 | } |
| 3588 | |
| 3589 | /** |
| 3590 | * megaraid_mbox_mm_command - issues commands routed through CMM |
| 3591 | * @param adapter : HBA soft state |
| 3592 | * @param kioc : management command packet |
| 3593 | * |
| 3594 | * Issues commands, which are routed through the management module. |
| 3595 | */ |
| 3596 | static int |
| 3597 | megaraid_mbox_mm_command(adapter_t *adapter, uioc_t *kioc) |
| 3598 | { |
| 3599 | struct list_head *head = &adapter->uscb_pool; |
| 3600 | mbox64_t *mbox64; |
| 3601 | uint8_t *raw_mbox; |
| 3602 | scb_t *scb; |
| 3603 | mbox_ccb_t *ccb; |
| 3604 | unsigned long flags; |
| 3605 | |
| 3606 | // detach one scb from free pool |
| 3607 | spin_lock_irqsave(USER_FREE_LIST_LOCK(adapter), flags); |
| 3608 | |
| 3609 | if (list_empty(head)) { // should never happen because of CMM |
| 3610 | |
| 3611 | con_log(CL_ANN, (KERN_WARNING |
| 3612 | "megaraid mbox: bug in cmm handler, lost resources\n")); |
| 3613 | |
| 3614 | spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags); |
| 3615 | |
| 3616 | return (-EINVAL); |
| 3617 | } |
| 3618 | |
| 3619 | scb = list_entry(head->next, scb_t, list); |
| 3620 | list_del_init(&scb->list); |
| 3621 | |
| 3622 | spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags); |
| 3623 | |
| 3624 | scb->state = SCB_ACTIVE; |
| 3625 | scb->dma_type = MRAID_DMA_NONE; |
| 3626 | scb->dma_direction = PCI_DMA_NONE; |
| 3627 | |
| 3628 | ccb = (mbox_ccb_t *)scb->ccb; |
| 3629 | mbox64 = (mbox64_t *)(unsigned long)kioc->cmdbuf; |
| 3630 | raw_mbox = (uint8_t *)&mbox64->mbox32; |
| 3631 | |
| 3632 | memcpy(ccb->mbox64, mbox64, sizeof(mbox64_t)); |
| 3633 | |
| 3634 | scb->gp = (unsigned long)kioc; |
| 3635 | |
| 3636 | /* |
| 3637 | * If it is a logdrv random delete operation, we have to wait till |
| 3638 | * there are no outstanding cmds at the fw and then issue it directly |
| 3639 | */ |
| 3640 | if (raw_mbox[0] == FC_DEL_LOGDRV && raw_mbox[2] == OP_DEL_LOGDRV) { |
| 3641 | |
| 3642 | if (wait_till_fw_empty(adapter)) { |
| 3643 | con_log(CL_ANN, (KERN_NOTICE |
| 3644 | "megaraid mbox: LD delete, timed out\n")); |
| 3645 | |
| 3646 | kioc->status = -ETIME; |
| 3647 | |
| 3648 | scb->status = -1; |
| 3649 | |
| 3650 | megaraid_mbox_mm_done(adapter, scb); |
| 3651 | |
| 3652 | return (-ETIME); |
| 3653 | } |
| 3654 | |
| 3655 | INIT_LIST_HEAD(&scb->list); |
| 3656 | |
| 3657 | scb->state = SCB_ISSUED; |
| 3658 | if (mbox_post_cmd(adapter, scb) != 0) { |
| 3659 | |
| 3660 | con_log(CL_ANN, (KERN_NOTICE |
| 3661 | "megaraid mbox: LD delete, mailbox busy\n")); |
| 3662 | |
| 3663 | kioc->status = -EBUSY; |
| 3664 | |
| 3665 | scb->status = -1; |
| 3666 | |
| 3667 | megaraid_mbox_mm_done(adapter, scb); |
| 3668 | |
| 3669 | return (-EBUSY); |
| 3670 | } |
| 3671 | |
| 3672 | return 0; |
| 3673 | } |
| 3674 | |
| 3675 | // put the command on the pending list and execute |
| 3676 | megaraid_mbox_runpendq(adapter, scb); |
| 3677 | |
| 3678 | return 0; |
| 3679 | } |
| 3680 | |
| 3681 | |
| 3682 | static int |
| 3683 | wait_till_fw_empty(adapter_t *adapter) |
| 3684 | { |
| 3685 | unsigned long flags = 0; |
| 3686 | int i; |
| 3687 | |
| 3688 | |
| 3689 | /* |
| 3690 | * Set the quiescent flag to stop issuing cmds to FW. |
| 3691 | */ |
Christoph Hellwig | f2c8dc4 | 2005-10-31 21:06:02 +0100 | [diff] [blame] | 3692 | spin_lock_irqsave(&adapter->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3693 | adapter->quiescent++; |
Christoph Hellwig | f2c8dc4 | 2005-10-31 21:06:02 +0100 | [diff] [blame] | 3694 | spin_unlock_irqrestore(&adapter->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3695 | |
| 3696 | /* |
| 3697 | * Wait till there are no more cmds outstanding at FW. Try for at most |
| 3698 | * 60 seconds |
| 3699 | */ |
| 3700 | for (i = 0; i < 60 && adapter->outstanding_cmds; i++) { |
| 3701 | con_log(CL_DLEVEL1, (KERN_INFO |
| 3702 | "megaraid: FW has %d pending commands\n", |
| 3703 | adapter->outstanding_cmds)); |
| 3704 | |
| 3705 | msleep(1000); |
| 3706 | } |
| 3707 | |
| 3708 | return adapter->outstanding_cmds; |
| 3709 | } |
| 3710 | |
| 3711 | |
| 3712 | /** |
| 3713 | * megaraid_mbox_mm_done - callback for CMM commands |
| 3714 | * @adapter : HBA soft state |
| 3715 | * @scb : completed command |
| 3716 | * |
| 3717 | * Callback routine for internal commands originated from the management |
| 3718 | * module. |
| 3719 | */ |
| 3720 | static void |
| 3721 | megaraid_mbox_mm_done(adapter_t *adapter, scb_t *scb) |
| 3722 | { |
| 3723 | uioc_t *kioc; |
| 3724 | mbox64_t *mbox64; |
| 3725 | uint8_t *raw_mbox; |
| 3726 | unsigned long flags; |
| 3727 | |
| 3728 | kioc = (uioc_t *)scb->gp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3729 | mbox64 = (mbox64_t *)(unsigned long)kioc->cmdbuf; |
| 3730 | mbox64->mbox32.status = scb->status; |
| 3731 | raw_mbox = (uint8_t *)&mbox64->mbox32; |
| 3732 | |
| 3733 | |
| 3734 | // put scb in the free pool |
| 3735 | scb->state = SCB_FREE; |
| 3736 | scb->scp = NULL; |
| 3737 | |
| 3738 | spin_lock_irqsave(USER_FREE_LIST_LOCK(adapter), flags); |
| 3739 | |
| 3740 | list_add(&scb->list, &adapter->uscb_pool); |
| 3741 | |
| 3742 | spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags); |
| 3743 | |
| 3744 | // if a delete logical drive operation succeeded, restart the |
| 3745 | // controller |
| 3746 | if (raw_mbox[0] == FC_DEL_LOGDRV && raw_mbox[2] == OP_DEL_LOGDRV) { |
| 3747 | |
| 3748 | adapter->quiescent--; |
| 3749 | |
| 3750 | megaraid_mbox_runpendq(adapter, NULL); |
| 3751 | } |
| 3752 | |
| 3753 | kioc->done(kioc); |
| 3754 | |
| 3755 | return; |
| 3756 | } |
| 3757 | |
| 3758 | |
| 3759 | /** |
| 3760 | * gather_hbainfo - HBA characteristics for the applications |
| 3761 | * @param adapter : HBA soft state |
| 3762 | * @param hinfo : pointer to the caller's host info strucuture |
| 3763 | */ |
| 3764 | static int |
| 3765 | gather_hbainfo(adapter_t *adapter, mraid_hba_info_t *hinfo) |
| 3766 | { |
| 3767 | uint8_t dmajor; |
| 3768 | |
| 3769 | dmajor = megaraid_mbox_version[0]; |
| 3770 | |
| 3771 | hinfo->pci_vendor_id = adapter->pdev->vendor; |
| 3772 | hinfo->pci_device_id = adapter->pdev->device; |
| 3773 | hinfo->subsys_vendor_id = adapter->pdev->subsystem_vendor; |
| 3774 | hinfo->subsys_device_id = adapter->pdev->subsystem_device; |
| 3775 | |
| 3776 | hinfo->pci_bus = adapter->pdev->bus->number; |
| 3777 | hinfo->pci_dev_fn = adapter->pdev->devfn; |
| 3778 | hinfo->pci_slot = PCI_SLOT(adapter->pdev->devfn); |
| 3779 | hinfo->irq = adapter->host->irq; |
| 3780 | hinfo->baseport = ADAP2RAIDDEV(adapter)->baseport; |
| 3781 | |
| 3782 | hinfo->unique_id = (hinfo->pci_bus << 8) | adapter->pdev->devfn; |
| 3783 | hinfo->host_no = adapter->host->host_no; |
| 3784 | |
| 3785 | return 0; |
| 3786 | } |
| 3787 | |
| 3788 | /* |
| 3789 | * END: Interface for the common management module |
| 3790 | */ |
| 3791 | |
| 3792 | |
| 3793 | |
| 3794 | /** |
| 3795 | * megaraid_sysfs_alloc_resources - allocate sysfs related resources |
| 3796 | * |
| 3797 | * Allocate packets required to issue FW calls whenever the sysfs attributes |
| 3798 | * are read. These attributes would require up-to-date information from the |
| 3799 | * FW. Also set up resources for mutual exclusion to share these resources and |
| 3800 | * the wait queue. |
| 3801 | * |
| 3802 | * @param adapter : controller's soft state |
| 3803 | * |
| 3804 | * @return 0 on success |
| 3805 | * @return -ERROR_CODE on failure |
| 3806 | */ |
| 3807 | static int |
| 3808 | megaraid_sysfs_alloc_resources(adapter_t *adapter) |
| 3809 | { |
| 3810 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 3811 | int rval = 0; |
| 3812 | |
| 3813 | raid_dev->sysfs_uioc = kmalloc(sizeof(uioc_t), GFP_KERNEL); |
| 3814 | |
| 3815 | raid_dev->sysfs_mbox64 = kmalloc(sizeof(mbox64_t), GFP_KERNEL); |
| 3816 | |
| 3817 | raid_dev->sysfs_buffer = pci_alloc_consistent(adapter->pdev, |
| 3818 | PAGE_SIZE, &raid_dev->sysfs_buffer_dma); |
| 3819 | |
| 3820 | if (!raid_dev->sysfs_uioc || !raid_dev->sysfs_mbox64 || |
| 3821 | !raid_dev->sysfs_buffer) { |
| 3822 | |
| 3823 | con_log(CL_ANN, (KERN_WARNING |
| 3824 | "megaraid: out of memory, %s %d\n", __FUNCTION__, |
| 3825 | __LINE__)); |
| 3826 | |
| 3827 | rval = -ENOMEM; |
| 3828 | |
| 3829 | megaraid_sysfs_free_resources(adapter); |
| 3830 | } |
| 3831 | |
| 3832 | sema_init(&raid_dev->sysfs_sem, 1); |
| 3833 | |
| 3834 | init_waitqueue_head(&raid_dev->sysfs_wait_q); |
| 3835 | |
| 3836 | return rval; |
| 3837 | } |
| 3838 | |
| 3839 | |
| 3840 | /** |
| 3841 | * megaraid_sysfs_free_resources - free sysfs related resources |
| 3842 | * |
| 3843 | * Free packets allocated for sysfs FW commands |
| 3844 | * |
| 3845 | * @param adapter : controller's soft state |
| 3846 | */ |
| 3847 | static void |
| 3848 | megaraid_sysfs_free_resources(adapter_t *adapter) |
| 3849 | { |
| 3850 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 3851 | |
Jesper Juhl | c9475cb | 2005-11-07 01:01:26 -0800 | [diff] [blame] | 3852 | kfree(raid_dev->sysfs_uioc); |
| 3853 | kfree(raid_dev->sysfs_mbox64); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3854 | |
| 3855 | if (raid_dev->sysfs_buffer) { |
| 3856 | pci_free_consistent(adapter->pdev, PAGE_SIZE, |
| 3857 | raid_dev->sysfs_buffer, raid_dev->sysfs_buffer_dma); |
| 3858 | } |
| 3859 | } |
| 3860 | |
| 3861 | |
| 3862 | /** |
| 3863 | * megaraid_sysfs_get_ldmap_done - callback for get ldmap |
| 3864 | * |
| 3865 | * Callback routine called in the ISR/tasklet context for get ldmap call |
| 3866 | * |
| 3867 | * @param uioc : completed packet |
| 3868 | */ |
| 3869 | static void |
| 3870 | megaraid_sysfs_get_ldmap_done(uioc_t *uioc) |
| 3871 | { |
| 3872 | adapter_t *adapter = (adapter_t *)uioc->buf_vaddr; |
| 3873 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 3874 | |
| 3875 | uioc->status = 0; |
| 3876 | |
| 3877 | wake_up(&raid_dev->sysfs_wait_q); |
| 3878 | } |
| 3879 | |
| 3880 | |
| 3881 | /** |
| 3882 | * megaraid_sysfs_get_ldmap_timeout - timeout handling for get ldmap |
| 3883 | * |
| 3884 | * Timeout routine to recover and return to application, in case the adapter |
| 3885 | * has stopped responding. A timeout of 60 seconds for this command seem like |
| 3886 | * a good value |
| 3887 | * |
| 3888 | * @param uioc : timed out packet |
| 3889 | */ |
| 3890 | static void |
| 3891 | megaraid_sysfs_get_ldmap_timeout(unsigned long data) |
| 3892 | { |
| 3893 | uioc_t *uioc = (uioc_t *)data; |
| 3894 | adapter_t *adapter = (adapter_t *)uioc->buf_vaddr; |
| 3895 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 3896 | |
| 3897 | uioc->status = -ETIME; |
| 3898 | |
| 3899 | wake_up(&raid_dev->sysfs_wait_q); |
| 3900 | } |
| 3901 | |
| 3902 | |
| 3903 | /** |
| 3904 | * megaraid_sysfs_get_ldmap - get update logical drive map |
| 3905 | * |
| 3906 | * This routine will be called whenever user reads the logical drive |
| 3907 | * attributes, go get the current logical drive mapping table from the |
| 3908 | * firmware. We use the managment API's to issue commands to the controller. |
| 3909 | * |
| 3910 | * NOTE: The commands issuance functionality is not generalized and |
| 3911 | * implemented in context of "get ld map" command only. If required, the |
| 3912 | * command issuance logical can be trivially pulled out and implemented as a |
| 3913 | * standalone libary. For now, this should suffice since there is no other |
| 3914 | * user of this interface. |
| 3915 | * |
| 3916 | * @param adapter : controller's soft state |
| 3917 | * |
| 3918 | * @return 0 on success |
| 3919 | * @return -1 on failure |
| 3920 | */ |
| 3921 | static int |
| 3922 | megaraid_sysfs_get_ldmap(adapter_t *adapter) |
| 3923 | { |
| 3924 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 3925 | uioc_t *uioc; |
| 3926 | mbox64_t *mbox64; |
| 3927 | mbox_t *mbox; |
| 3928 | char *raw_mbox; |
| 3929 | struct timer_list sysfs_timer; |
| 3930 | struct timer_list *timerp; |
| 3931 | caddr_t ldmap; |
| 3932 | int rval = 0; |
| 3933 | |
| 3934 | /* |
| 3935 | * Allow only one read at a time to go through the sysfs attributes |
| 3936 | */ |
| 3937 | down(&raid_dev->sysfs_sem); |
| 3938 | |
| 3939 | uioc = raid_dev->sysfs_uioc; |
| 3940 | mbox64 = raid_dev->sysfs_mbox64; |
| 3941 | ldmap = raid_dev->sysfs_buffer; |
| 3942 | |
| 3943 | memset(uioc, 0, sizeof(uioc_t)); |
| 3944 | memset(mbox64, 0, sizeof(mbox64_t)); |
| 3945 | memset(ldmap, 0, sizeof(raid_dev->curr_ldmap)); |
| 3946 | |
| 3947 | mbox = &mbox64->mbox32; |
| 3948 | raw_mbox = (char *)mbox; |
| 3949 | uioc->cmdbuf = (uint64_t)(unsigned long)mbox64; |
| 3950 | uioc->buf_vaddr = (caddr_t)adapter; |
| 3951 | uioc->status = -ENODATA; |
| 3952 | uioc->done = megaraid_sysfs_get_ldmap_done; |
| 3953 | |
| 3954 | /* |
| 3955 | * Prepare the mailbox packet to get the current logical drive mapping |
| 3956 | * table |
| 3957 | */ |
| 3958 | mbox->xferaddr = (uint32_t)raid_dev->sysfs_buffer_dma; |
| 3959 | |
| 3960 | raw_mbox[0] = FC_DEL_LOGDRV; |
| 3961 | raw_mbox[2] = OP_GET_LDID_MAP; |
| 3962 | |
| 3963 | /* |
| 3964 | * Setup a timer to recover from a non-responding controller |
| 3965 | */ |
| 3966 | timerp = &sysfs_timer; |
| 3967 | init_timer(timerp); |
| 3968 | |
| 3969 | timerp->function = megaraid_sysfs_get_ldmap_timeout; |
| 3970 | timerp->data = (unsigned long)uioc; |
| 3971 | timerp->expires = jiffies + 60 * HZ; |
| 3972 | |
| 3973 | add_timer(timerp); |
| 3974 | |
| 3975 | /* |
| 3976 | * Send the command to the firmware |
| 3977 | */ |
| 3978 | rval = megaraid_mbox_mm_command(adapter, uioc); |
| 3979 | |
| 3980 | if (rval == 0) { // command successfully issued |
| 3981 | wait_event(raid_dev->sysfs_wait_q, (uioc->status != -ENODATA)); |
| 3982 | |
| 3983 | /* |
| 3984 | * Check if the command timed out |
| 3985 | */ |
| 3986 | if (uioc->status == -ETIME) { |
| 3987 | con_log(CL_ANN, (KERN_NOTICE |
| 3988 | "megaraid: sysfs get ld map timed out\n")); |
| 3989 | |
| 3990 | rval = -ETIME; |
| 3991 | } |
| 3992 | else { |
| 3993 | rval = mbox->status; |
| 3994 | } |
| 3995 | |
| 3996 | if (rval == 0) { |
| 3997 | memcpy(raid_dev->curr_ldmap, ldmap, |
| 3998 | sizeof(raid_dev->curr_ldmap)); |
| 3999 | } |
| 4000 | else { |
| 4001 | con_log(CL_ANN, (KERN_NOTICE |
| 4002 | "megaraid: get ld map failed with %x\n", rval)); |
| 4003 | } |
| 4004 | } |
| 4005 | else { |
| 4006 | con_log(CL_ANN, (KERN_NOTICE |
| 4007 | "megaraid: could not issue ldmap command:%x\n", rval)); |
| 4008 | } |
| 4009 | |
| 4010 | |
| 4011 | del_timer_sync(timerp); |
| 4012 | |
| 4013 | up(&raid_dev->sysfs_sem); |
| 4014 | |
| 4015 | return rval; |
| 4016 | } |
| 4017 | |
| 4018 | |
| 4019 | /** |
| 4020 | * megaraid_sysfs_show_app_hndl - display application handle for this adapter |
| 4021 | * |
| 4022 | * Display the handle used by the applications while executing management |
| 4023 | * tasks on the adapter. We invoke a management module API to get the adapter |
| 4024 | * handle, since we do not interface with applications directly. |
| 4025 | * |
| 4026 | * @param cdev : class device object representation for the host |
| 4027 | * @param buf : buffer to send data to |
| 4028 | */ |
| 4029 | static ssize_t |
| 4030 | megaraid_sysfs_show_app_hndl(struct class_device *cdev, char *buf) |
| 4031 | { |
| 4032 | struct Scsi_Host *shost = class_to_shost(cdev); |
| 4033 | adapter_t *adapter = (adapter_t *)SCSIHOST2ADAP(shost); |
| 4034 | uint32_t app_hndl; |
| 4035 | |
| 4036 | app_hndl = mraid_mm_adapter_app_handle(adapter->unique_id); |
| 4037 | |
| 4038 | return snprintf(buf, 8, "%u\n", app_hndl); |
| 4039 | } |
| 4040 | |
| 4041 | |
| 4042 | /** |
| 4043 | * megaraid_sysfs_show_ldnum - display the logical drive number for this device |
| 4044 | * |
| 4045 | * Display the logical drive number for the device in question, if it a valid |
| 4046 | * logical drive. For physical devices, "-1" is returned |
| 4047 | * The logical drive number is displayed in following format |
| 4048 | * |
| 4049 | * <SCSI ID> <LD NUM> <LD STICKY ID> <APP ADAPTER HANDLE> |
| 4050 | * <int> <int> <int> <int> |
| 4051 | * |
| 4052 | * @param dev : device object representation for the scsi device |
| 4053 | * @param buf : buffer to send data to |
| 4054 | */ |
| 4055 | static ssize_t |
Yani Ioannou | 10523b3 | 2005-05-17 06:43:37 -0400 | [diff] [blame] | 4056 | megaraid_sysfs_show_ldnum(struct device *dev, struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4057 | { |
| 4058 | struct scsi_device *sdev = to_scsi_device(dev); |
| 4059 | adapter_t *adapter = (adapter_t *)SCSIHOST2ADAP(sdev->host); |
| 4060 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 4061 | int scsi_id = -1; |
| 4062 | int logical_drv = -1; |
| 4063 | int ldid_map = -1; |
| 4064 | uint32_t app_hndl = 0; |
| 4065 | int mapped_sdev_id; |
| 4066 | int rval; |
| 4067 | int i; |
| 4068 | |
| 4069 | if (raid_dev->random_del_supported && |
| 4070 | MRAID_IS_LOGICAL_SDEV(adapter, sdev)) { |
| 4071 | |
| 4072 | rval = megaraid_sysfs_get_ldmap(adapter); |
| 4073 | if (rval == 0) { |
| 4074 | |
| 4075 | for (i = 0; i < MAX_LOGICAL_DRIVES_40LD; i++) { |
| 4076 | |
| 4077 | mapped_sdev_id = sdev->id; |
| 4078 | |
| 4079 | if (sdev->id > adapter->init_id) { |
| 4080 | mapped_sdev_id -= 1; |
| 4081 | } |
| 4082 | |
| 4083 | if (raid_dev->curr_ldmap[i] == mapped_sdev_id) { |
| 4084 | |
| 4085 | scsi_id = sdev->id; |
| 4086 | |
| 4087 | logical_drv = i; |
| 4088 | |
| 4089 | ldid_map = raid_dev->curr_ldmap[i]; |
| 4090 | |
| 4091 | app_hndl = mraid_mm_adapter_app_handle( |
| 4092 | adapter->unique_id); |
| 4093 | |
| 4094 | break; |
| 4095 | } |
| 4096 | } |
| 4097 | } |
| 4098 | else { |
| 4099 | con_log(CL_ANN, (KERN_NOTICE |
| 4100 | "megaraid: sysfs get ld map failed: %x\n", |
| 4101 | rval)); |
| 4102 | } |
| 4103 | } |
| 4104 | |
| 4105 | return snprintf(buf, 36, "%d %d %d %d\n", scsi_id, logical_drv, |
| 4106 | ldid_map, app_hndl); |
| 4107 | } |
| 4108 | |
| 4109 | |
| 4110 | /* |
| 4111 | * END: Mailbox Low Level Driver |
| 4112 | */ |
| 4113 | module_init(megaraid_init); |
| 4114 | module_exit(megaraid_exit); |
| 4115 | |
| 4116 | /* vim: set ts=8 sw=8 tw=78 ai si: */ |