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 |
Sumant Patro | cd96d96 | 2007-01-05 07:10:09 -0800 | [diff] [blame] | 13 | * Version : v2.20.5.1 (Nov 16 2006) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | * |
| 15 | * Authors: |
Sumant Patro | cd96d96 | 2007-01-05 07:10:09 -0800 | [diff] [blame] | 16 | * Atul Mukker <Atul.Mukker@lsi.com> |
| 17 | * Sreenivas Bagalkote <Sreenivas.Bagalkote@lsi.com> |
| 18 | * Manoj Jose <Manoj.Jose@lsi.com> |
| 19 | * Seokmann Ju |
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 *); |
Sumant Patro | cd96d96 | 2007-01-05 07:10:09 -0800 | [diff] [blame] | 110 | static int megaraid_mbox_fire_sync_cmd(adapter_t *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | |
| 112 | static void megaraid_mbox_display_scb(adapter_t *, scb_t *); |
| 113 | static void megaraid_mbox_setup_device_map(adapter_t *); |
| 114 | |
| 115 | static int megaraid_queue_command(struct scsi_cmnd *, |
| 116 | void (*)(struct scsi_cmnd *)); |
| 117 | static scb_t *megaraid_mbox_build_cmd(adapter_t *, struct scsi_cmnd *, int *); |
| 118 | static void megaraid_mbox_runpendq(adapter_t *, scb_t *); |
| 119 | static void megaraid_mbox_prepare_pthru(adapter_t *, scb_t *, |
| 120 | struct scsi_cmnd *); |
| 121 | static void megaraid_mbox_prepare_epthru(adapter_t *, scb_t *, |
| 122 | struct scsi_cmnd *); |
| 123 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 124 | static irqreturn_t megaraid_isr(int, void *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | |
| 126 | static void megaraid_mbox_dpc(unsigned long); |
| 127 | |
| 128 | static ssize_t megaraid_sysfs_show_app_hndl(struct class_device *, char *); |
Yani Ioannou | 10523b3 | 2005-05-17 06:43:37 -0400 | [diff] [blame] | 129 | 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] | 130 | |
| 131 | static int megaraid_cmm_register(adapter_t *); |
| 132 | static int megaraid_cmm_unregister(adapter_t *); |
| 133 | static int megaraid_mbox_mm_handler(unsigned long, uioc_t *, uint32_t); |
| 134 | static int megaraid_mbox_mm_command(adapter_t *, uioc_t *); |
| 135 | static void megaraid_mbox_mm_done(adapter_t *, scb_t *); |
| 136 | static int gather_hbainfo(adapter_t *, mraid_hba_info_t *); |
| 137 | static int wait_till_fw_empty(adapter_t *); |
| 138 | |
| 139 | |
| 140 | |
Sumant Patro | cd96d96 | 2007-01-05 07:10:09 -0800 | [diff] [blame] | 141 | MODULE_AUTHOR("megaraidlinux@lsi.com"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | MODULE_DESCRIPTION("LSI Logic MegaRAID Mailbox Driver"); |
| 143 | MODULE_LICENSE("GPL"); |
| 144 | MODULE_VERSION(MEGARAID_VERSION); |
| 145 | |
| 146 | /* |
| 147 | * ### modules parameters for driver ### |
| 148 | */ |
| 149 | |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 150 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | * Set to enable driver to expose unconfigured disk to kernel |
| 152 | */ |
| 153 | static int megaraid_expose_unconf_disks = 0; |
| 154 | module_param_named(unconf_disks, megaraid_expose_unconf_disks, int, 0); |
| 155 | MODULE_PARM_DESC(unconf_disks, |
| 156 | "Set to expose unconfigured disks to kernel (default=0)"); |
| 157 | |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 158 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | * driver wait time if the adapter's mailbox is busy |
| 160 | */ |
| 161 | static unsigned int max_mbox_busy_wait = MBOX_BUSY_WAIT; |
| 162 | module_param_named(busy_wait, max_mbox_busy_wait, int, 0); |
| 163 | MODULE_PARM_DESC(busy_wait, |
| 164 | "Max wait for mailbox in microseconds if busy (default=10)"); |
| 165 | |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 166 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | * number of sectors per IO command |
| 168 | */ |
| 169 | static unsigned int megaraid_max_sectors = MBOX_MAX_SECTORS; |
| 170 | module_param_named(max_sectors, megaraid_max_sectors, int, 0); |
| 171 | MODULE_PARM_DESC(max_sectors, |
| 172 | "Maximum number of sectors per IO command (default=128)"); |
| 173 | |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 174 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | * number of commands per logical unit |
| 176 | */ |
| 177 | static unsigned int megaraid_cmd_per_lun = MBOX_DEF_CMD_PER_LUN; |
| 178 | module_param_named(cmd_per_lun, megaraid_cmd_per_lun, int, 0); |
| 179 | MODULE_PARM_DESC(cmd_per_lun, |
| 180 | "Maximum number of commands per logical unit (default=64)"); |
| 181 | |
| 182 | |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 183 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | * Fast driver load option, skip scanning for physical devices during load. |
| 185 | * This would result in non-disk devices being skipped during driver load |
| 186 | * time. These can be later added though, using /proc/scsi/scsi |
| 187 | */ |
| 188 | static unsigned int megaraid_fast_load = 0; |
| 189 | module_param_named(fast_load, megaraid_fast_load, int, 0); |
| 190 | MODULE_PARM_DESC(fast_load, |
| 191 | "Faster loading of the driver, skips physical devices! (default=0)"); |
| 192 | |
| 193 | |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 194 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | * mraid_debug level - threshold for amount of information to be displayed by |
| 196 | * the driver. This level can be changed through modules parameters, ioctl or |
| 197 | * sysfs/proc interface. By default, print the announcement messages only. |
| 198 | */ |
| 199 | int mraid_debug_level = CL_ANN; |
| 200 | module_param_named(debug_level, mraid_debug_level, int, 0); |
| 201 | MODULE_PARM_DESC(debug_level, "Debug level for driver (default=0)"); |
| 202 | |
| 203 | /* |
| 204 | * ### global data ### |
| 205 | */ |
| 206 | static uint8_t megaraid_mbox_version[8] = |
Ju, Seokmann | 672b2d3 | 2005-05-16 18:32:17 -0400 | [diff] [blame] | 207 | { 0x02, 0x20, 0x04, 0x06, 3, 7, 20, 5 }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | |
| 209 | |
| 210 | /* |
| 211 | * PCI table for all supported controllers. |
| 212 | */ |
| 213 | static struct pci_device_id pci_id_table_g[] = { |
| 214 | { |
| 215 | PCI_VENDOR_ID_DELL, |
| 216 | PCI_DEVICE_ID_PERC4_DI_DISCOVERY, |
| 217 | PCI_VENDOR_ID_DELL, |
| 218 | PCI_SUBSYS_ID_PERC4_DI_DISCOVERY, |
| 219 | }, |
| 220 | { |
| 221 | PCI_VENDOR_ID_LSI_LOGIC, |
| 222 | PCI_DEVICE_ID_PERC4_SC, |
| 223 | PCI_VENDOR_ID_DELL, |
| 224 | PCI_SUBSYS_ID_PERC4_SC, |
| 225 | }, |
| 226 | { |
| 227 | PCI_VENDOR_ID_LSI_LOGIC, |
| 228 | PCI_DEVICE_ID_PERC4_DC, |
| 229 | PCI_VENDOR_ID_DELL, |
| 230 | PCI_SUBSYS_ID_PERC4_DC, |
| 231 | }, |
| 232 | { |
| 233 | PCI_VENDOR_ID_LSI_LOGIC, |
Ju, Seokmann | 672b2d3 | 2005-05-16 18:32:17 -0400 | [diff] [blame] | 234 | PCI_DEVICE_ID_VERDE, |
| 235 | PCI_ANY_ID, |
| 236 | PCI_ANY_ID, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | }, |
| 238 | { |
| 239 | PCI_VENDOR_ID_DELL, |
| 240 | PCI_DEVICE_ID_PERC4_DI_EVERGLADES, |
| 241 | PCI_VENDOR_ID_DELL, |
| 242 | PCI_SUBSYS_ID_PERC4_DI_EVERGLADES, |
| 243 | }, |
| 244 | { |
| 245 | PCI_VENDOR_ID_DELL, |
| 246 | PCI_DEVICE_ID_PERC4E_SI_BIGBEND, |
| 247 | PCI_VENDOR_ID_DELL, |
| 248 | PCI_SUBSYS_ID_PERC4E_SI_BIGBEND, |
| 249 | }, |
| 250 | { |
| 251 | PCI_VENDOR_ID_DELL, |
| 252 | PCI_DEVICE_ID_PERC4E_DI_KOBUK, |
| 253 | PCI_VENDOR_ID_DELL, |
| 254 | PCI_SUBSYS_ID_PERC4E_DI_KOBUK, |
| 255 | }, |
| 256 | { |
| 257 | PCI_VENDOR_ID_DELL, |
| 258 | PCI_DEVICE_ID_PERC4E_DI_CORVETTE, |
| 259 | PCI_VENDOR_ID_DELL, |
| 260 | PCI_SUBSYS_ID_PERC4E_DI_CORVETTE, |
| 261 | }, |
| 262 | { |
| 263 | PCI_VENDOR_ID_DELL, |
| 264 | PCI_DEVICE_ID_PERC4E_DI_EXPEDITION, |
| 265 | PCI_VENDOR_ID_DELL, |
| 266 | PCI_SUBSYS_ID_PERC4E_DI_EXPEDITION, |
| 267 | }, |
| 268 | { |
| 269 | PCI_VENDOR_ID_DELL, |
| 270 | PCI_DEVICE_ID_PERC4E_DI_GUADALUPE, |
| 271 | PCI_VENDOR_ID_DELL, |
| 272 | PCI_SUBSYS_ID_PERC4E_DI_GUADALUPE, |
| 273 | }, |
| 274 | { |
| 275 | PCI_VENDOR_ID_LSI_LOGIC, |
Ju, Seokmann | 672b2d3 | 2005-05-16 18:32:17 -0400 | [diff] [blame] | 276 | PCI_DEVICE_ID_DOBSON, |
| 277 | PCI_ANY_ID, |
| 278 | PCI_ANY_ID, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | }, |
| 280 | { |
| 281 | PCI_VENDOR_ID_AMI, |
| 282 | PCI_DEVICE_ID_AMI_MEGARAID3, |
Ju, Seokmann | ed7e8ef | 2005-11-17 13:17:25 -0500 | [diff] [blame] | 283 | PCI_ANY_ID, |
| 284 | PCI_ANY_ID, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | }, |
| 286 | { |
Ju, Seokmann | ed7e8ef | 2005-11-17 13:17:25 -0500 | [diff] [blame] | 287 | PCI_VENDOR_ID_LSI_LOGIC, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | PCI_DEVICE_ID_AMI_MEGARAID3, |
Ju, Seokmann | ed7e8ef | 2005-11-17 13:17:25 -0500 | [diff] [blame] | 289 | PCI_ANY_ID, |
| 290 | PCI_ANY_ID, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | }, |
| 292 | { |
| 293 | PCI_VENDOR_ID_LSI_LOGIC, |
Ju, Seokmann | 672b2d3 | 2005-05-16 18:32:17 -0400 | [diff] [blame] | 294 | PCI_DEVICE_ID_LINDSAY, |
| 295 | PCI_ANY_ID, |
| 296 | PCI_ANY_ID, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | {0} /* Terminating entry */ |
| 299 | }; |
| 300 | MODULE_DEVICE_TABLE(pci, pci_id_table_g); |
| 301 | |
| 302 | |
| 303 | static struct pci_driver megaraid_pci_driver_g = { |
| 304 | .name = "megaraid", |
| 305 | .id_table = pci_id_table_g, |
| 306 | .probe = megaraid_probe_one, |
| 307 | .remove = __devexit_p(megaraid_detach_one), |
Russell King | 5457b6a | 2005-10-16 21:32:46 +0100 | [diff] [blame] | 308 | .shutdown = megaraid_mbox_shutdown, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | }; |
| 310 | |
| 311 | |
| 312 | |
| 313 | // definitions for the device attributes for exporting logical drive number |
| 314 | // for a scsi address (Host, Channel, Id, Lun) |
| 315 | |
| 316 | CLASS_DEVICE_ATTR(megaraid_mbox_app_hndl, S_IRUSR, megaraid_sysfs_show_app_hndl, |
| 317 | NULL); |
| 318 | |
| 319 | // Host template initializer for megaraid mbox sysfs device attributes |
| 320 | static struct class_device_attribute *megaraid_shost_attrs[] = { |
| 321 | &class_device_attr_megaraid_mbox_app_hndl, |
| 322 | NULL, |
| 323 | }; |
| 324 | |
| 325 | |
| 326 | DEVICE_ATTR(megaraid_mbox_ld, S_IRUSR, megaraid_sysfs_show_ldnum, NULL); |
| 327 | |
| 328 | // Host template initializer for megaraid mbox sysfs device attributes |
| 329 | static struct device_attribute *megaraid_sdev_attrs[] = { |
| 330 | &dev_attr_megaraid_mbox_ld, |
| 331 | NULL, |
| 332 | }; |
| 333 | |
brking@charter.net | f4c8aa1 | 2006-07-05 17:00:01 -0500 | [diff] [blame] | 334 | /** |
| 335 | * megaraid_change_queue_depth - Change the device's queue depth |
| 336 | * @sdev: scsi device struct |
| 337 | * @qdepth: depth to set |
| 338 | * |
| 339 | * Return value: |
| 340 | * actual depth set |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 341 | */ |
brking@charter.net | f4c8aa1 | 2006-07-05 17:00:01 -0500 | [diff] [blame] | 342 | static int megaraid_change_queue_depth(struct scsi_device *sdev, int qdepth) |
| 343 | { |
| 344 | if (qdepth > MBOX_MAX_SCSI_CMDS) |
| 345 | qdepth = MBOX_MAX_SCSI_CMDS; |
| 346 | scsi_adjust_queue_depth(sdev, 0, qdepth); |
| 347 | return sdev->queue_depth; |
| 348 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | |
| 350 | /* |
| 351 | * Scsi host template for megaraid unified driver |
| 352 | */ |
| 353 | static struct scsi_host_template megaraid_template_g = { |
| 354 | .module = THIS_MODULE, |
| 355 | .name = "LSI Logic MegaRAID driver", |
| 356 | .proc_name = "megaraid", |
| 357 | .queuecommand = megaraid_queue_command, |
| 358 | .eh_abort_handler = megaraid_abort_handler, |
| 359 | .eh_device_reset_handler = megaraid_reset_handler, |
| 360 | .eh_bus_reset_handler = megaraid_reset_handler, |
| 361 | .eh_host_reset_handler = megaraid_reset_handler, |
brking@charter.net | f4c8aa1 | 2006-07-05 17:00:01 -0500 | [diff] [blame] | 362 | .change_queue_depth = megaraid_change_queue_depth, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | .use_clustering = ENABLE_CLUSTERING, |
| 364 | .sdev_attrs = megaraid_sdev_attrs, |
| 365 | .shost_attrs = megaraid_shost_attrs, |
| 366 | }; |
| 367 | |
| 368 | |
| 369 | /** |
| 370 | * megaraid_init - module load hook |
| 371 | * |
| 372 | * We register ourselves as hotplug enabled module and let PCI subsystem |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 373 | * discover our adapters. |
| 374 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | static int __init |
| 376 | megaraid_init(void) |
| 377 | { |
| 378 | int rval; |
| 379 | |
| 380 | // Announce the driver version |
| 381 | con_log(CL_ANN, (KERN_INFO "megaraid: %s %s\n", MEGARAID_VERSION, |
| 382 | MEGARAID_EXT_VERSION)); |
| 383 | |
| 384 | // check validity of module parameters |
| 385 | if (megaraid_cmd_per_lun > MBOX_MAX_SCSI_CMDS) { |
| 386 | |
| 387 | con_log(CL_ANN, (KERN_WARNING |
| 388 | "megaraid mailbox: max commands per lun reset to %d\n", |
| 389 | MBOX_MAX_SCSI_CMDS)); |
| 390 | |
| 391 | megaraid_cmd_per_lun = MBOX_MAX_SCSI_CMDS; |
| 392 | } |
| 393 | |
| 394 | |
| 395 | // register as a PCI hot-plug driver module |
Ju, Seokmann | 672b2d3 | 2005-05-16 18:32:17 -0400 | [diff] [blame] | 396 | rval = pci_register_driver(&megaraid_pci_driver_g); |
| 397 | if (rval < 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | con_log(CL_ANN, (KERN_WARNING |
| 399 | "megaraid: could not register hotplug support.\n")); |
| 400 | } |
| 401 | |
| 402 | return rval; |
| 403 | } |
| 404 | |
| 405 | |
| 406 | /** |
| 407 | * megaraid_exit - driver unload entry point |
| 408 | * |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 409 | * We simply unwrap the megaraid_init routine here. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | */ |
| 411 | static void __exit |
| 412 | megaraid_exit(void) |
| 413 | { |
| 414 | con_log(CL_DLEVEL1, (KERN_NOTICE "megaraid: unloading framework\n")); |
| 415 | |
| 416 | // unregister as PCI hotplug driver |
| 417 | pci_unregister_driver(&megaraid_pci_driver_g); |
| 418 | |
| 419 | return; |
| 420 | } |
| 421 | |
| 422 | |
| 423 | /** |
| 424 | * megaraid_probe_one - PCI hotplug entry point |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 425 | * @pdev : handle to this controller's PCI configuration space |
| 426 | * @id : pci device id of the class of controllers |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | * |
| 428 | * This routine should be called whenever a new adapter is detected by the |
| 429 | * PCI hotplug susbsytem. |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 430 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | static int __devinit |
| 432 | megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) |
| 433 | { |
| 434 | adapter_t *adapter; |
| 435 | |
| 436 | |
| 437 | // detected a new controller |
| 438 | con_log(CL_ANN, (KERN_INFO |
| 439 | "megaraid: probe new device %#4.04x:%#4.04x:%#4.04x:%#4.04x: ", |
| 440 | pdev->vendor, pdev->device, pdev->subsystem_vendor, |
| 441 | pdev->subsystem_device)); |
| 442 | |
| 443 | con_log(CL_ANN, ("bus %d:slot %d:func %d\n", pdev->bus->number, |
| 444 | PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn))); |
| 445 | |
| 446 | if (pci_enable_device(pdev)) { |
| 447 | con_log(CL_ANN, (KERN_WARNING |
| 448 | "megaraid: pci_enable_device failed\n")); |
| 449 | |
| 450 | return -ENODEV; |
| 451 | } |
| 452 | |
| 453 | // Enable bus-mastering on this controller |
| 454 | pci_set_master(pdev); |
| 455 | |
| 456 | // Allocate the per driver initialization structure |
Yoann Padioleau | dd00cc4 | 2007-07-19 01:49:03 -0700 | [diff] [blame^] | 457 | adapter = kzalloc(sizeof(adapter_t), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | |
| 459 | if (adapter == NULL) { |
| 460 | con_log(CL_ANN, (KERN_WARNING |
| 461 | "megaraid: out of memory, %s %d.\n", __FUNCTION__, __LINE__)); |
| 462 | |
| 463 | goto out_probe_one; |
| 464 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | |
| 466 | |
| 467 | // set up PCI related soft state and other pre-known parameters |
| 468 | adapter->unique_id = pdev->bus->number << 8 | pdev->devfn; |
| 469 | adapter->irq = pdev->irq; |
| 470 | adapter->pdev = pdev; |
| 471 | |
| 472 | atomic_set(&adapter->being_detached, 0); |
| 473 | |
| 474 | // Setup the default DMA mask. This would be changed later on |
| 475 | // depending on hardware capabilities |
Ju, Seokmann | 672b2d3 | 2005-05-16 18:32:17 -0400 | [diff] [blame] | 476 | if (pci_set_dma_mask(adapter->pdev, DMA_32BIT_MASK) != 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | |
| 478 | con_log(CL_ANN, (KERN_WARNING |
| 479 | "megaraid: pci_set_dma_mask failed:%d\n", __LINE__)); |
| 480 | |
| 481 | goto out_free_adapter; |
| 482 | } |
| 483 | |
| 484 | |
| 485 | // Initialize the synchronization lock for kernel and LLD |
| 486 | spin_lock_init(&adapter->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | |
| 488 | // Initialize the command queues: the list of free SCBs and the list |
| 489 | // of pending SCBs. |
| 490 | INIT_LIST_HEAD(&adapter->kscb_pool); |
| 491 | spin_lock_init(SCSI_FREE_LIST_LOCK(adapter)); |
| 492 | |
| 493 | INIT_LIST_HEAD(&adapter->pend_list); |
| 494 | spin_lock_init(PENDING_LIST_LOCK(adapter)); |
| 495 | |
| 496 | INIT_LIST_HEAD(&adapter->completed_list); |
| 497 | spin_lock_init(COMPLETED_LIST_LOCK(adapter)); |
| 498 | |
| 499 | |
| 500 | // Start the mailbox based controller |
| 501 | if (megaraid_init_mbox(adapter) != 0) { |
| 502 | con_log(CL_ANN, (KERN_WARNING |
| 503 | "megaraid: maibox adapter did not initialize\n")); |
| 504 | |
| 505 | goto out_free_adapter; |
| 506 | } |
| 507 | |
| 508 | // Register with LSI Common Management Module |
| 509 | if (megaraid_cmm_register(adapter) != 0) { |
| 510 | |
| 511 | con_log(CL_ANN, (KERN_WARNING |
| 512 | "megaraid: could not register with management module\n")); |
| 513 | |
| 514 | goto out_fini_mbox; |
| 515 | } |
| 516 | |
| 517 | // setup adapter handle in PCI soft state |
| 518 | pci_set_drvdata(pdev, adapter); |
| 519 | |
| 520 | // attach with scsi mid-layer |
| 521 | if (megaraid_io_attach(adapter) != 0) { |
| 522 | |
| 523 | con_log(CL_ANN, (KERN_WARNING "megaraid: io attach failed\n")); |
| 524 | |
| 525 | goto out_cmm_unreg; |
| 526 | } |
| 527 | |
| 528 | return 0; |
| 529 | |
| 530 | out_cmm_unreg: |
| 531 | pci_set_drvdata(pdev, NULL); |
| 532 | megaraid_cmm_unregister(adapter); |
| 533 | out_fini_mbox: |
| 534 | megaraid_fini_mbox(adapter); |
| 535 | out_free_adapter: |
| 536 | kfree(adapter); |
| 537 | out_probe_one: |
| 538 | pci_disable_device(pdev); |
| 539 | |
| 540 | return -ENODEV; |
| 541 | } |
| 542 | |
| 543 | |
| 544 | /** |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 545 | * megaraid_detach_one - release framework resources and call LLD release routine |
| 546 | * @pdev : handle for our PCI cofiguration space |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | * |
| 548 | * This routine is called during driver unload. We free all the allocated |
| 549 | * resources and call the corresponding LLD so that it can also release all |
| 550 | * its resources. |
| 551 | * |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 552 | * This routine is also called from the PCI hotplug system. |
| 553 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 554 | static void |
| 555 | megaraid_detach_one(struct pci_dev *pdev) |
| 556 | { |
| 557 | adapter_t *adapter; |
| 558 | struct Scsi_Host *host; |
| 559 | |
| 560 | |
| 561 | // Start a rollback on this adapter |
| 562 | adapter = pci_get_drvdata(pdev); |
| 563 | |
| 564 | if (!adapter) { |
| 565 | con_log(CL_ANN, (KERN_CRIT |
| 566 | "megaraid: Invalid detach on %#4.04x:%#4.04x:%#4.04x:%#4.04x\n", |
| 567 | pdev->vendor, pdev->device, pdev->subsystem_vendor, |
| 568 | pdev->subsystem_device)); |
| 569 | |
| 570 | return; |
| 571 | } |
| 572 | else { |
| 573 | con_log(CL_ANN, (KERN_NOTICE |
| 574 | "megaraid: detaching device %#4.04x:%#4.04x:%#4.04x:%#4.04x\n", |
| 575 | pdev->vendor, pdev->device, pdev->subsystem_vendor, |
| 576 | pdev->subsystem_device)); |
| 577 | } |
| 578 | |
| 579 | |
| 580 | host = adapter->host; |
| 581 | |
| 582 | // do not allow any more requests from the management module for this |
| 583 | // adapter. |
| 584 | // FIXME: How do we account for the request which might still be |
| 585 | // pending with us? |
| 586 | atomic_set(&adapter->being_detached, 1); |
| 587 | |
| 588 | // detach from the IO sub-system |
| 589 | megaraid_io_detach(adapter); |
| 590 | |
| 591 | // reset the device state in the PCI structure. We check this |
| 592 | // condition when we enter here. If the device state is NULL, |
| 593 | // that would mean the device has already been removed |
| 594 | pci_set_drvdata(pdev, NULL); |
| 595 | |
| 596 | // Unregister from common management module |
| 597 | // |
| 598 | // FIXME: this must return success or failure for conditions if there |
| 599 | // is a command pending with LLD or not. |
| 600 | megaraid_cmm_unregister(adapter); |
| 601 | |
| 602 | // finalize the mailbox based controller and release all resources |
| 603 | megaraid_fini_mbox(adapter); |
| 604 | |
| 605 | kfree(adapter); |
| 606 | |
| 607 | scsi_host_put(host); |
| 608 | |
| 609 | pci_disable_device(pdev); |
| 610 | |
| 611 | return; |
| 612 | } |
| 613 | |
| 614 | |
| 615 | /** |
| 616 | * megaraid_mbox_shutdown - PCI shutdown for megaraid HBA |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 617 | * @pdev : generic driver model device |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | * |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 619 | * Shutdown notification, perform flush cache. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | */ |
| 621 | static void |
Russell King | 5457b6a | 2005-10-16 21:32:46 +0100 | [diff] [blame] | 622 | megaraid_mbox_shutdown(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | { |
Russell King | 5457b6a | 2005-10-16 21:32:46 +0100 | [diff] [blame] | 624 | adapter_t *adapter = pci_get_drvdata(pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | static int counter; |
| 626 | |
| 627 | if (!adapter) { |
| 628 | con_log(CL_ANN, (KERN_WARNING |
| 629 | "megaraid: null device in shutdown\n")); |
| 630 | return; |
| 631 | } |
| 632 | |
| 633 | // flush caches now |
| 634 | con_log(CL_ANN, (KERN_INFO "megaraid: flushing adapter %d...", |
| 635 | counter++)); |
| 636 | |
| 637 | megaraid_mbox_flush_cache(adapter); |
| 638 | |
| 639 | con_log(CL_ANN, ("done\n")); |
| 640 | } |
| 641 | |
| 642 | |
| 643 | /** |
| 644 | * megaraid_io_attach - attach a device with the IO subsystem |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 645 | * @adapter : controller's soft state |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 646 | * |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 647 | * Attach this device with the IO subsystem. |
| 648 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 649 | static int |
| 650 | megaraid_io_attach(adapter_t *adapter) |
| 651 | { |
| 652 | struct Scsi_Host *host; |
| 653 | |
| 654 | // Initialize SCSI Host structure |
| 655 | host = scsi_host_alloc(&megaraid_template_g, 8); |
| 656 | if (!host) { |
| 657 | con_log(CL_ANN, (KERN_WARNING |
| 658 | "megaraid mbox: scsi_register failed\n")); |
| 659 | |
| 660 | return -1; |
| 661 | } |
| 662 | |
| 663 | SCSIHOST2ADAP(host) = (caddr_t)adapter; |
| 664 | adapter->host = host; |
| 665 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 666 | host->irq = adapter->irq; |
| 667 | host->unique_id = adapter->unique_id; |
| 668 | host->can_queue = adapter->max_cmds; |
| 669 | host->this_id = adapter->init_id; |
| 670 | host->sg_tablesize = adapter->sglen; |
| 671 | host->max_sectors = adapter->max_sectors; |
| 672 | host->cmd_per_lun = adapter->cmd_per_lun; |
| 673 | host->max_channel = adapter->max_channel; |
| 674 | host->max_id = adapter->max_target; |
| 675 | host->max_lun = adapter->max_lun; |
| 676 | |
| 677 | |
| 678 | // notify mid-layer about the new controller |
| 679 | if (scsi_add_host(host, &adapter->pdev->dev)) { |
| 680 | |
| 681 | con_log(CL_ANN, (KERN_WARNING |
| 682 | "megaraid mbox: scsi_add_host failed\n")); |
| 683 | |
| 684 | scsi_host_put(host); |
| 685 | |
| 686 | return -1; |
| 687 | } |
| 688 | |
| 689 | scsi_scan_host(host); |
| 690 | |
| 691 | return 0; |
| 692 | } |
| 693 | |
| 694 | |
| 695 | /** |
| 696 | * megaraid_io_detach - detach a device from the IO subsystem |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 697 | * @adapter : controller's soft state |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | * |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 699 | * Detach this device from the IO subsystem. |
| 700 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | static void |
| 702 | megaraid_io_detach(adapter_t *adapter) |
| 703 | { |
| 704 | struct Scsi_Host *host; |
| 705 | |
| 706 | con_log(CL_DLEVEL1, (KERN_INFO "megaraid: io detach\n")); |
| 707 | |
| 708 | host = adapter->host; |
| 709 | |
| 710 | scsi_remove_host(host); |
| 711 | |
| 712 | return; |
| 713 | } |
| 714 | |
| 715 | |
| 716 | /* |
| 717 | * START: Mailbox Low Level Driver |
| 718 | * |
| 719 | * This is section specific to the single mailbox based controllers |
| 720 | */ |
| 721 | |
| 722 | /** |
| 723 | * megaraid_init_mbox - initialize controller |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 724 | * @adapter : our soft state |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 725 | * |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 726 | * - Allocate 16-byte aligned mailbox memory for firmware handshake |
| 727 | * - Allocate controller's memory resources |
| 728 | * - Find out all initialization data |
| 729 | * - Allocate memory required for all the commands |
| 730 | * - Use internal library of FW routines, build up complete soft state |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 731 | */ |
Randy Dunlap | cedfb17 | 2006-06-25 05:48:05 -0700 | [diff] [blame] | 732 | static int __devinit |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | megaraid_init_mbox(adapter_t *adapter) |
| 734 | { |
| 735 | struct pci_dev *pdev; |
| 736 | mraid_device_t *raid_dev; |
| 737 | int i; |
Ju, Seokmann | fbf6080 | 2006-07-25 08:44:48 -0600 | [diff] [blame] | 738 | uint32_t magic64; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 739 | |
| 740 | |
| 741 | adapter->ito = MBOX_TIMEOUT; |
| 742 | pdev = adapter->pdev; |
| 743 | |
| 744 | /* |
| 745 | * Allocate and initialize the init data structure for mailbox |
| 746 | * controllers |
| 747 | */ |
Yoann Padioleau | dd00cc4 | 2007-07-19 01:49:03 -0700 | [diff] [blame^] | 748 | raid_dev = kzalloc(sizeof(mraid_device_t), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | if (raid_dev == NULL) return -1; |
| 750 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | |
| 752 | /* |
| 753 | * Attach the adapter soft state to raid device soft state |
| 754 | */ |
| 755 | adapter->raid_device = (caddr_t)raid_dev; |
| 756 | raid_dev->fast_load = megaraid_fast_load; |
| 757 | |
| 758 | |
| 759 | // our baseport |
| 760 | raid_dev->baseport = pci_resource_start(pdev, 0); |
| 761 | |
| 762 | if (pci_request_regions(pdev, "MegaRAID: LSI Logic Corporation") != 0) { |
| 763 | |
| 764 | con_log(CL_ANN, (KERN_WARNING |
| 765 | "megaraid: mem region busy\n")); |
| 766 | |
| 767 | goto out_free_raid_dev; |
| 768 | } |
| 769 | |
| 770 | raid_dev->baseaddr = ioremap_nocache(raid_dev->baseport, 128); |
| 771 | |
| 772 | if (!raid_dev->baseaddr) { |
| 773 | |
| 774 | con_log(CL_ANN, (KERN_WARNING |
| 775 | "megaraid: could not map hba memory\n") ); |
| 776 | |
| 777 | goto out_release_regions; |
| 778 | } |
| 779 | |
Sumant Patro | cd96d96 | 2007-01-05 07:10:09 -0800 | [diff] [blame] | 780 | /* initialize the mutual exclusion lock for the mailbox */ |
| 781 | spin_lock_init(&raid_dev->mailbox_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | |
Sumant Patro | cd96d96 | 2007-01-05 07:10:09 -0800 | [diff] [blame] | 783 | /* allocate memory required for commands */ |
| 784 | if (megaraid_alloc_cmd_packets(adapter) != 0) |
| 785 | goto out_iounmap; |
| 786 | |
| 787 | /* |
| 788 | * Issue SYNC cmd to flush the pending cmds in the adapter |
| 789 | * and initialize its internal state |
| 790 | */ |
| 791 | |
| 792 | if (megaraid_mbox_fire_sync_cmd(adapter)) |
| 793 | con_log(CL_ANN, ("megaraid: sync cmd failed\n")); |
| 794 | |
| 795 | /* |
| 796 | * Setup the rest of the soft state using the library of |
| 797 | * FW routines |
| 798 | */ |
| 799 | |
| 800 | /* request IRQ and register the interrupt service routine */ |
Thomas Gleixner | 1d6f359 | 2006-07-01 19:29:42 -0700 | [diff] [blame] | 801 | if (request_irq(adapter->irq, megaraid_isr, IRQF_SHARED, "megaraid", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | adapter)) { |
| 803 | |
| 804 | con_log(CL_ANN, (KERN_WARNING |
| 805 | "megaraid: Couldn't register IRQ %d!\n", adapter->irq)); |
Sumant Patro | cd96d96 | 2007-01-05 07:10:09 -0800 | [diff] [blame] | 806 | goto out_alloc_cmds; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 808 | } |
| 809 | |
| 810 | // Product info |
Sumant Patro | cd96d96 | 2007-01-05 07:10:09 -0800 | [diff] [blame] | 811 | if (megaraid_mbox_product_info(adapter) != 0) |
| 812 | goto out_free_irq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 813 | |
| 814 | // Do we support extended CDBs |
| 815 | adapter->max_cdb_sz = 10; |
| 816 | if (megaraid_mbox_extended_cdb(adapter) == 0) { |
| 817 | adapter->max_cdb_sz = 16; |
| 818 | } |
| 819 | |
| 820 | /* |
| 821 | * Do we support cluster environment, if we do, what is the initiator |
| 822 | * id. |
| 823 | * NOTE: In a non-cluster aware firmware environment, the LLD should |
| 824 | * return 7 as initiator id. |
| 825 | */ |
| 826 | adapter->ha = 0; |
| 827 | adapter->init_id = -1; |
| 828 | if (megaraid_mbox_support_ha(adapter, &adapter->init_id) == 0) { |
| 829 | adapter->ha = 1; |
| 830 | } |
| 831 | |
| 832 | /* |
| 833 | * Prepare the device ids array to have the mapping between the kernel |
| 834 | * device address and megaraid device address. |
| 835 | * We export the physical devices on their actual addresses. The |
| 836 | * logical drives are exported on a virtual SCSI channel |
| 837 | */ |
| 838 | megaraid_mbox_setup_device_map(adapter); |
| 839 | |
| 840 | // If the firmware supports random deletion, update the device id map |
| 841 | if (megaraid_mbox_support_random_del(adapter)) { |
| 842 | |
| 843 | // Change the logical drives numbers in device_ids array one |
| 844 | // slot in device_ids is reserved for target id, that's why |
| 845 | // "<=" below |
| 846 | for (i = 0; i <= MAX_LOGICAL_DRIVES_40LD; i++) { |
| 847 | adapter->device_ids[adapter->max_channel][i] += 0x80; |
| 848 | } |
| 849 | adapter->device_ids[adapter->max_channel][adapter->init_id] = |
| 850 | 0xFF; |
| 851 | |
| 852 | raid_dev->random_del_supported = 1; |
| 853 | } |
| 854 | |
| 855 | /* |
| 856 | * find out the maximum number of scatter-gather elements supported by |
| 857 | * this firmware |
| 858 | */ |
| 859 | adapter->sglen = megaraid_mbox_get_max_sg(adapter); |
| 860 | |
| 861 | // enumerate RAID and SCSI channels so that all devices on SCSI |
| 862 | // channels can later be exported, including disk devices |
| 863 | megaraid_mbox_enum_raid_scsi(adapter); |
| 864 | |
| 865 | /* |
| 866 | * Other parameters required by upper layer |
| 867 | * |
| 868 | * maximum number of sectors per IO command |
| 869 | */ |
| 870 | adapter->max_sectors = megaraid_max_sectors; |
| 871 | |
| 872 | /* |
| 873 | * number of queued commands per LUN. |
| 874 | */ |
| 875 | adapter->cmd_per_lun = megaraid_cmd_per_lun; |
| 876 | |
| 877 | /* |
| 878 | * Allocate resources required to issue FW calls, when sysfs is |
| 879 | * accessed |
| 880 | */ |
Sumant Patro | cd96d96 | 2007-01-05 07:10:09 -0800 | [diff] [blame] | 881 | if (megaraid_sysfs_alloc_resources(adapter) != 0) |
| 882 | goto out_free_irq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 883 | |
| 884 | // Set the DMA mask to 64-bit. All supported controllers as capable of |
| 885 | // DMA in this range |
Ju, Seokmann | fbf6080 | 2006-07-25 08:44:48 -0600 | [diff] [blame] | 886 | pci_read_config_dword(adapter->pdev, PCI_CONF_AMISIG64, &magic64); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 887 | |
Ju, Seokmann | fbf6080 | 2006-07-25 08:44:48 -0600 | [diff] [blame] | 888 | if (((magic64 == HBA_SIGNATURE_64_BIT) && |
| 889 | ((adapter->pdev->subsystem_device != |
Andrey Mirkin | 8741ca7 | 2006-10-16 12:08:43 +0400 | [diff] [blame] | 890 | PCI_SUBSYS_ID_MEGARAID_SATA_150_6) && |
Ju, Seokmann | fbf6080 | 2006-07-25 08:44:48 -0600 | [diff] [blame] | 891 | (adapter->pdev->subsystem_device != |
| 892 | PCI_SUBSYS_ID_MEGARAID_SATA_150_4))) || |
| 893 | (adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC && |
| 894 | adapter->pdev->device == PCI_DEVICE_ID_VERDE) || |
| 895 | (adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC && |
| 896 | adapter->pdev->device == PCI_DEVICE_ID_DOBSON) || |
| 897 | (adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC && |
| 898 | adapter->pdev->device == PCI_DEVICE_ID_LINDSAY) || |
| 899 | (adapter->pdev->vendor == PCI_VENDOR_ID_DELL && |
| 900 | adapter->pdev->device == PCI_DEVICE_ID_PERC4_DI_EVERGLADES) || |
| 901 | (adapter->pdev->vendor == PCI_VENDOR_ID_DELL && |
| 902 | adapter->pdev->device == PCI_DEVICE_ID_PERC4E_DI_KOBUK)) { |
| 903 | if (pci_set_dma_mask(adapter->pdev, DMA_64BIT_MASK)) { |
| 904 | con_log(CL_ANN, (KERN_WARNING |
| 905 | "megaraid: DMA mask for 64-bit failed\n")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 906 | |
Ju, Seokmann | fbf6080 | 2006-07-25 08:44:48 -0600 | [diff] [blame] | 907 | if (pci_set_dma_mask (adapter->pdev, DMA_32BIT_MASK)) { |
| 908 | con_log(CL_ANN, (KERN_WARNING |
| 909 | "megaraid: 32-bit DMA mask failed\n")); |
| 910 | goto out_free_sysfs_res; |
| 911 | } |
| 912 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 913 | } |
| 914 | |
| 915 | // setup tasklet for DPC |
| 916 | tasklet_init(&adapter->dpc_h, megaraid_mbox_dpc, |
| 917 | (unsigned long)adapter); |
| 918 | |
| 919 | con_log(CL_DLEVEL1, (KERN_INFO |
| 920 | "megaraid mbox hba successfully initialized\n")); |
| 921 | |
| 922 | return 0; |
| 923 | |
| 924 | out_free_sysfs_res: |
| 925 | megaraid_sysfs_free_resources(adapter); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 926 | out_free_irq: |
| 927 | free_irq(adapter->irq, adapter); |
Sumant Patro | cd96d96 | 2007-01-05 07:10:09 -0800 | [diff] [blame] | 928 | out_alloc_cmds: |
| 929 | megaraid_free_cmd_packets(adapter); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 930 | out_iounmap: |
| 931 | iounmap(raid_dev->baseaddr); |
| 932 | out_release_regions: |
| 933 | pci_release_regions(pdev); |
| 934 | out_free_raid_dev: |
| 935 | kfree(raid_dev); |
| 936 | |
| 937 | return -1; |
| 938 | } |
| 939 | |
| 940 | |
| 941 | /** |
| 942 | * megaraid_fini_mbox - undo controller initialization |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 943 | * @adapter : our soft state |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 944 | */ |
| 945 | static void |
| 946 | megaraid_fini_mbox(adapter_t *adapter) |
| 947 | { |
| 948 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 949 | |
| 950 | // flush all caches |
| 951 | megaraid_mbox_flush_cache(adapter); |
| 952 | |
| 953 | tasklet_kill(&adapter->dpc_h); |
| 954 | |
| 955 | megaraid_sysfs_free_resources(adapter); |
| 956 | |
| 957 | megaraid_free_cmd_packets(adapter); |
| 958 | |
| 959 | free_irq(adapter->irq, adapter); |
| 960 | |
| 961 | iounmap(raid_dev->baseaddr); |
| 962 | |
| 963 | pci_release_regions(adapter->pdev); |
| 964 | |
| 965 | kfree(raid_dev); |
| 966 | |
| 967 | return; |
| 968 | } |
| 969 | |
| 970 | |
| 971 | /** |
| 972 | * megaraid_alloc_cmd_packets - allocate shared mailbox |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 973 | * @adapter : soft state of the raid controller |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 974 | * |
| 975 | * Allocate and align the shared mailbox. This maibox is used to issue |
| 976 | * all the commands. For IO based controllers, the mailbox is also regsitered |
| 977 | * with the FW. Allocate memory for all commands as well. |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 978 | * This is our big allocator. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 979 | */ |
| 980 | static int |
| 981 | megaraid_alloc_cmd_packets(adapter_t *adapter) |
| 982 | { |
| 983 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 984 | struct pci_dev *pdev; |
| 985 | unsigned long align; |
| 986 | scb_t *scb; |
| 987 | mbox_ccb_t *ccb; |
| 988 | struct mraid_pci_blk *epthru_pci_blk; |
| 989 | struct mraid_pci_blk *sg_pci_blk; |
| 990 | struct mraid_pci_blk *mbox_pci_blk; |
| 991 | int i; |
| 992 | |
| 993 | pdev = adapter->pdev; |
| 994 | |
| 995 | /* |
| 996 | * Setup the mailbox |
| 997 | * Allocate the common 16-byte aligned memory for the handshake |
| 998 | * mailbox. |
| 999 | */ |
| 1000 | raid_dev->una_mbox64 = pci_alloc_consistent(adapter->pdev, |
| 1001 | sizeof(mbox64_t), &raid_dev->una_mbox64_dma); |
| 1002 | |
| 1003 | if (!raid_dev->una_mbox64) { |
| 1004 | con_log(CL_ANN, (KERN_WARNING |
| 1005 | "megaraid: out of memory, %s %d\n", __FUNCTION__, |
| 1006 | __LINE__)); |
| 1007 | return -1; |
| 1008 | } |
| 1009 | memset(raid_dev->una_mbox64, 0, sizeof(mbox64_t)); |
| 1010 | |
| 1011 | /* |
| 1012 | * Align the mailbox at 16-byte boundary |
| 1013 | */ |
| 1014 | raid_dev->mbox = &raid_dev->una_mbox64->mbox32; |
| 1015 | |
| 1016 | raid_dev->mbox = (mbox_t *)((((unsigned long)raid_dev->mbox) + 15) & |
| 1017 | (~0UL ^ 0xFUL)); |
| 1018 | |
| 1019 | raid_dev->mbox64 = (mbox64_t *)(((unsigned long)raid_dev->mbox) - 8); |
| 1020 | |
| 1021 | align = ((void *)raid_dev->mbox - |
| 1022 | ((void *)&raid_dev->una_mbox64->mbox32)); |
| 1023 | |
| 1024 | raid_dev->mbox_dma = (unsigned long)raid_dev->una_mbox64_dma + 8 + |
| 1025 | align; |
| 1026 | |
| 1027 | // Allocate memory for commands issued internally |
| 1028 | adapter->ibuf = pci_alloc_consistent(pdev, MBOX_IBUF_SIZE, |
| 1029 | &adapter->ibuf_dma_h); |
| 1030 | if (!adapter->ibuf) { |
| 1031 | |
| 1032 | con_log(CL_ANN, (KERN_WARNING |
| 1033 | "megaraid: out of memory, %s %d\n", __FUNCTION__, |
| 1034 | __LINE__)); |
| 1035 | |
| 1036 | goto out_free_common_mbox; |
| 1037 | } |
| 1038 | memset(adapter->ibuf, 0, MBOX_IBUF_SIZE); |
| 1039 | |
| 1040 | // Allocate memory for our SCSI Command Blocks and their associated |
| 1041 | // memory |
| 1042 | |
| 1043 | /* |
| 1044 | * Allocate memory for the base list of scb. Later allocate memory for |
| 1045 | * CCBs and embedded components of each CCB and point the pointers in |
| 1046 | * scb to the allocated components |
| 1047 | * NOTE: The code to allocate SCB will be duplicated in all the LLD |
| 1048 | * since the calling routine does not yet know the number of available |
| 1049 | * commands. |
| 1050 | */ |
Yoann Padioleau | dd00cc4 | 2007-07-19 01:49:03 -0700 | [diff] [blame^] | 1051 | adapter->kscb_list = kcalloc(MBOX_MAX_SCSI_CMDS, sizeof(scb_t), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1052 | |
| 1053 | if (adapter->kscb_list == NULL) { |
| 1054 | con_log(CL_ANN, (KERN_WARNING |
| 1055 | "megaraid: out of memory, %s %d\n", __FUNCTION__, |
| 1056 | __LINE__)); |
| 1057 | goto out_free_ibuf; |
| 1058 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1059 | |
| 1060 | // memory allocation for our command packets |
| 1061 | if (megaraid_mbox_setup_dma_pools(adapter) != 0) { |
| 1062 | con_log(CL_ANN, (KERN_WARNING |
| 1063 | "megaraid: out of memory, %s %d\n", __FUNCTION__, |
| 1064 | __LINE__)); |
| 1065 | goto out_free_scb_list; |
| 1066 | } |
| 1067 | |
| 1068 | // Adjust the scb pointers and link in the free pool |
| 1069 | epthru_pci_blk = raid_dev->epthru_pool; |
| 1070 | sg_pci_blk = raid_dev->sg_pool; |
| 1071 | mbox_pci_blk = raid_dev->mbox_pool; |
| 1072 | |
| 1073 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { |
| 1074 | scb = adapter->kscb_list + i; |
| 1075 | ccb = raid_dev->ccb_list + i; |
| 1076 | |
| 1077 | ccb->mbox = (mbox_t *)(mbox_pci_blk[i].vaddr + 16); |
| 1078 | ccb->raw_mbox = (uint8_t *)ccb->mbox; |
| 1079 | ccb->mbox64 = (mbox64_t *)(mbox_pci_blk[i].vaddr + 8); |
| 1080 | ccb->mbox_dma_h = (unsigned long)mbox_pci_blk[i].dma_addr + 16; |
| 1081 | |
| 1082 | // make sure the mailbox is aligned properly |
| 1083 | if (ccb->mbox_dma_h & 0x0F) { |
| 1084 | con_log(CL_ANN, (KERN_CRIT |
| 1085 | "megaraid mbox: not aligned on 16-bytes\n")); |
| 1086 | |
| 1087 | goto out_teardown_dma_pools; |
| 1088 | } |
| 1089 | |
| 1090 | ccb->epthru = (mraid_epassthru_t *) |
| 1091 | epthru_pci_blk[i].vaddr; |
| 1092 | ccb->epthru_dma_h = epthru_pci_blk[i].dma_addr; |
| 1093 | ccb->pthru = (mraid_passthru_t *)ccb->epthru; |
| 1094 | ccb->pthru_dma_h = ccb->epthru_dma_h; |
| 1095 | |
| 1096 | |
| 1097 | ccb->sgl64 = (mbox_sgl64 *)sg_pci_blk[i].vaddr; |
| 1098 | ccb->sgl_dma_h = sg_pci_blk[i].dma_addr; |
| 1099 | ccb->sgl32 = (mbox_sgl32 *)ccb->sgl64; |
| 1100 | |
| 1101 | scb->ccb = (caddr_t)ccb; |
| 1102 | scb->gp = 0; |
| 1103 | |
| 1104 | scb->sno = i; // command index |
| 1105 | |
| 1106 | scb->scp = NULL; |
| 1107 | scb->state = SCB_FREE; |
| 1108 | scb->dma_direction = PCI_DMA_NONE; |
| 1109 | scb->dma_type = MRAID_DMA_NONE; |
| 1110 | scb->dev_channel = -1; |
| 1111 | scb->dev_target = -1; |
| 1112 | |
| 1113 | // put scb in the free pool |
| 1114 | list_add_tail(&scb->list, &adapter->kscb_pool); |
| 1115 | } |
| 1116 | |
| 1117 | return 0; |
| 1118 | |
| 1119 | out_teardown_dma_pools: |
| 1120 | megaraid_mbox_teardown_dma_pools(adapter); |
| 1121 | out_free_scb_list: |
| 1122 | kfree(adapter->kscb_list); |
| 1123 | out_free_ibuf: |
| 1124 | pci_free_consistent(pdev, MBOX_IBUF_SIZE, (void *)adapter->ibuf, |
| 1125 | adapter->ibuf_dma_h); |
| 1126 | out_free_common_mbox: |
| 1127 | pci_free_consistent(adapter->pdev, sizeof(mbox64_t), |
| 1128 | (caddr_t)raid_dev->una_mbox64, raid_dev->una_mbox64_dma); |
| 1129 | |
| 1130 | return -1; |
| 1131 | } |
| 1132 | |
| 1133 | |
| 1134 | /** |
| 1135 | * megaraid_free_cmd_packets - free memory |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 1136 | * @adapter : soft state of the raid controller |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1137 | * |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 1138 | * Release memory resources allocated for commands. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1139 | */ |
| 1140 | static void |
| 1141 | megaraid_free_cmd_packets(adapter_t *adapter) |
| 1142 | { |
| 1143 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 1144 | |
| 1145 | megaraid_mbox_teardown_dma_pools(adapter); |
| 1146 | |
| 1147 | kfree(adapter->kscb_list); |
| 1148 | |
| 1149 | pci_free_consistent(adapter->pdev, MBOX_IBUF_SIZE, |
| 1150 | (void *)adapter->ibuf, adapter->ibuf_dma_h); |
| 1151 | |
| 1152 | pci_free_consistent(adapter->pdev, sizeof(mbox64_t), |
| 1153 | (caddr_t)raid_dev->una_mbox64, raid_dev->una_mbox64_dma); |
| 1154 | return; |
| 1155 | } |
| 1156 | |
| 1157 | |
| 1158 | /** |
| 1159 | * megaraid_mbox_setup_dma_pools - setup dma pool for command packets |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 1160 | * @adapter : HBA soft state |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1161 | * |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 1162 | * Setup the dma pools for mailbox, passthru and extended passthru structures, |
| 1163 | * and scatter-gather lists. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1164 | */ |
| 1165 | static int |
| 1166 | megaraid_mbox_setup_dma_pools(adapter_t *adapter) |
| 1167 | { |
| 1168 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 1169 | struct mraid_pci_blk *epthru_pci_blk; |
| 1170 | struct mraid_pci_blk *sg_pci_blk; |
| 1171 | struct mraid_pci_blk *mbox_pci_blk; |
| 1172 | int i; |
| 1173 | |
| 1174 | |
| 1175 | |
| 1176 | // Allocate memory for 16-bytes aligned mailboxes |
| 1177 | raid_dev->mbox_pool_handle = pci_pool_create("megaraid mbox pool", |
| 1178 | adapter->pdev, |
| 1179 | sizeof(mbox64_t) + 16, |
| 1180 | 16, 0); |
| 1181 | |
| 1182 | if (raid_dev->mbox_pool_handle == NULL) { |
| 1183 | goto fail_setup_dma_pool; |
| 1184 | } |
| 1185 | |
| 1186 | mbox_pci_blk = raid_dev->mbox_pool; |
| 1187 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { |
| 1188 | mbox_pci_blk[i].vaddr = pci_pool_alloc( |
| 1189 | raid_dev->mbox_pool_handle, |
| 1190 | GFP_KERNEL, |
| 1191 | &mbox_pci_blk[i].dma_addr); |
| 1192 | if (!mbox_pci_blk[i].vaddr) { |
| 1193 | goto fail_setup_dma_pool; |
| 1194 | } |
| 1195 | } |
| 1196 | |
| 1197 | /* |
| 1198 | * Allocate memory for each embedded passthru strucuture pointer |
| 1199 | * Request for a 128 bytes aligned structure for each passthru command |
| 1200 | * structure |
| 1201 | * Since passthru and extended passthru commands are exclusive, they |
| 1202 | * share common memory pool. Passthru structures piggyback on memory |
| 1203 | * allocted to extended passthru since passthru is smaller of the two |
| 1204 | */ |
| 1205 | raid_dev->epthru_pool_handle = pci_pool_create("megaraid mbox pthru", |
| 1206 | adapter->pdev, sizeof(mraid_epassthru_t), 128, 0); |
| 1207 | |
| 1208 | if (raid_dev->epthru_pool_handle == NULL) { |
| 1209 | goto fail_setup_dma_pool; |
| 1210 | } |
| 1211 | |
| 1212 | epthru_pci_blk = raid_dev->epthru_pool; |
| 1213 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { |
| 1214 | epthru_pci_blk[i].vaddr = pci_pool_alloc( |
| 1215 | raid_dev->epthru_pool_handle, |
| 1216 | GFP_KERNEL, |
| 1217 | &epthru_pci_blk[i].dma_addr); |
| 1218 | if (!epthru_pci_blk[i].vaddr) { |
| 1219 | goto fail_setup_dma_pool; |
| 1220 | } |
| 1221 | } |
| 1222 | |
| 1223 | |
| 1224 | // Allocate memory for each scatter-gather list. Request for 512 bytes |
| 1225 | // alignment for each sg list |
| 1226 | raid_dev->sg_pool_handle = pci_pool_create("megaraid mbox sg", |
| 1227 | adapter->pdev, |
| 1228 | sizeof(mbox_sgl64) * MBOX_MAX_SG_SIZE, |
| 1229 | 512, 0); |
| 1230 | |
| 1231 | if (raid_dev->sg_pool_handle == NULL) { |
| 1232 | goto fail_setup_dma_pool; |
| 1233 | } |
| 1234 | |
| 1235 | sg_pci_blk = raid_dev->sg_pool; |
| 1236 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { |
| 1237 | sg_pci_blk[i].vaddr = pci_pool_alloc( |
| 1238 | raid_dev->sg_pool_handle, |
| 1239 | GFP_KERNEL, |
| 1240 | &sg_pci_blk[i].dma_addr); |
| 1241 | if (!sg_pci_blk[i].vaddr) { |
| 1242 | goto fail_setup_dma_pool; |
| 1243 | } |
| 1244 | } |
| 1245 | |
| 1246 | return 0; |
| 1247 | |
| 1248 | fail_setup_dma_pool: |
| 1249 | megaraid_mbox_teardown_dma_pools(adapter); |
| 1250 | return -1; |
| 1251 | } |
| 1252 | |
| 1253 | |
| 1254 | /** |
| 1255 | * megaraid_mbox_teardown_dma_pools - teardown dma pools for command packets |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 1256 | * @adapter : HBA soft state |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1257 | * |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 1258 | * Teardown the dma pool for mailbox, passthru and extended passthru |
| 1259 | * structures, and scatter-gather lists. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1260 | */ |
| 1261 | static void |
| 1262 | megaraid_mbox_teardown_dma_pools(adapter_t *adapter) |
| 1263 | { |
| 1264 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 1265 | struct mraid_pci_blk *epthru_pci_blk; |
| 1266 | struct mraid_pci_blk *sg_pci_blk; |
| 1267 | struct mraid_pci_blk *mbox_pci_blk; |
| 1268 | int i; |
| 1269 | |
| 1270 | |
| 1271 | sg_pci_blk = raid_dev->sg_pool; |
| 1272 | for (i = 0; i < MBOX_MAX_SCSI_CMDS && sg_pci_blk[i].vaddr; i++) { |
| 1273 | pci_pool_free(raid_dev->sg_pool_handle, sg_pci_blk[i].vaddr, |
| 1274 | sg_pci_blk[i].dma_addr); |
| 1275 | } |
| 1276 | if (raid_dev->sg_pool_handle) |
| 1277 | pci_pool_destroy(raid_dev->sg_pool_handle); |
| 1278 | |
| 1279 | |
| 1280 | epthru_pci_blk = raid_dev->epthru_pool; |
| 1281 | for (i = 0; i < MBOX_MAX_SCSI_CMDS && epthru_pci_blk[i].vaddr; i++) { |
| 1282 | pci_pool_free(raid_dev->epthru_pool_handle, |
| 1283 | epthru_pci_blk[i].vaddr, epthru_pci_blk[i].dma_addr); |
| 1284 | } |
| 1285 | if (raid_dev->epthru_pool_handle) |
| 1286 | pci_pool_destroy(raid_dev->epthru_pool_handle); |
| 1287 | |
| 1288 | |
| 1289 | mbox_pci_blk = raid_dev->mbox_pool; |
| 1290 | for (i = 0; i < MBOX_MAX_SCSI_CMDS && mbox_pci_blk[i].vaddr; i++) { |
| 1291 | pci_pool_free(raid_dev->mbox_pool_handle, |
| 1292 | mbox_pci_blk[i].vaddr, mbox_pci_blk[i].dma_addr); |
| 1293 | } |
| 1294 | if (raid_dev->mbox_pool_handle) |
| 1295 | pci_pool_destroy(raid_dev->mbox_pool_handle); |
| 1296 | |
| 1297 | return; |
| 1298 | } |
| 1299 | |
| 1300 | |
| 1301 | /** |
| 1302 | * megaraid_alloc_scb - detach and return a scb from the free list |
| 1303 | * @adapter : controller's soft state |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 1304 | * @scp : pointer to the scsi command to be executed |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1305 | * |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 1306 | * Return the scb from the head of the free list. %NULL if there are none |
| 1307 | * available. |
| 1308 | */ |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame] | 1309 | static scb_t * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1310 | megaraid_alloc_scb(adapter_t *adapter, struct scsi_cmnd *scp) |
| 1311 | { |
| 1312 | struct list_head *head = &adapter->kscb_pool; |
| 1313 | scb_t *scb = NULL; |
| 1314 | unsigned long flags; |
| 1315 | |
| 1316 | // detach scb from free pool |
| 1317 | spin_lock_irqsave(SCSI_FREE_LIST_LOCK(adapter), flags); |
| 1318 | |
| 1319 | if (list_empty(head)) { |
| 1320 | spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter), flags); |
| 1321 | return NULL; |
| 1322 | } |
| 1323 | |
| 1324 | scb = list_entry(head->next, scb_t, list); |
| 1325 | list_del_init(&scb->list); |
| 1326 | |
| 1327 | spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter), flags); |
| 1328 | |
| 1329 | scb->state = SCB_ACTIVE; |
| 1330 | scb->scp = scp; |
| 1331 | scb->dma_type = MRAID_DMA_NONE; |
| 1332 | |
| 1333 | return scb; |
| 1334 | } |
| 1335 | |
| 1336 | |
| 1337 | /** |
| 1338 | * megaraid_dealloc_scb - return the scb to the free pool |
| 1339 | * @adapter : controller's soft state |
| 1340 | * @scb : scb to be freed |
| 1341 | * |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 1342 | * Return the scb back to the free list of scbs. The caller must 'flush' the |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1343 | * SCB before calling us. E.g., performing pci_unamp and/or pci_sync etc. |
| 1344 | * NOTE NOTE: Make sure the scb is not on any list before calling this |
| 1345 | * routine. |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 1346 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1347 | static inline void |
| 1348 | megaraid_dealloc_scb(adapter_t *adapter, scb_t *scb) |
| 1349 | { |
| 1350 | unsigned long flags; |
| 1351 | |
| 1352 | // put scb in the free pool |
| 1353 | scb->state = SCB_FREE; |
| 1354 | scb->scp = NULL; |
| 1355 | spin_lock_irqsave(SCSI_FREE_LIST_LOCK(adapter), flags); |
| 1356 | |
| 1357 | list_add(&scb->list, &adapter->kscb_pool); |
| 1358 | |
| 1359 | spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter), flags); |
| 1360 | |
| 1361 | return; |
| 1362 | } |
| 1363 | |
| 1364 | |
| 1365 | /** |
| 1366 | * megaraid_mbox_mksgl - make the scatter-gather list |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 1367 | * @adapter : controller's soft state |
| 1368 | * @scb : scsi control block |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1369 | * |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 1370 | * Prepare the scatter-gather list. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1371 | */ |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame] | 1372 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1373 | megaraid_mbox_mksgl(adapter_t *adapter, scb_t *scb) |
| 1374 | { |
| 1375 | struct scatterlist *sgl; |
| 1376 | mbox_ccb_t *ccb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1377 | struct scsi_cmnd *scp; |
| 1378 | int sgcnt; |
| 1379 | int i; |
| 1380 | |
| 1381 | |
| 1382 | scp = scb->scp; |
| 1383 | ccb = (mbox_ccb_t *)scb->ccb; |
| 1384 | |
FUJITA Tomonori | 32fbac2 | 2007-05-14 20:13:44 +0900 | [diff] [blame] | 1385 | sgcnt = scsi_dma_map(scp); |
| 1386 | BUG_ON(sgcnt < 0 || sgcnt > adapter->sglen); |
| 1387 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1388 | // no mapping required if no data to be transferred |
FUJITA Tomonori | 32fbac2 | 2007-05-14 20:13:44 +0900 | [diff] [blame] | 1389 | if (!sgcnt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1390 | return 0; |
| 1391 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1392 | scb->dma_type = MRAID_DMA_WSG; |
| 1393 | |
FUJITA Tomonori | 32fbac2 | 2007-05-14 20:13:44 +0900 | [diff] [blame] | 1394 | scsi_for_each_sg(scp, sgl, sgcnt, i) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1395 | ccb->sgl64[i].address = sg_dma_address(sgl); |
| 1396 | ccb->sgl64[i].length = sg_dma_len(sgl); |
| 1397 | } |
| 1398 | |
| 1399 | // Return count of SG nodes |
| 1400 | return sgcnt; |
| 1401 | } |
| 1402 | |
| 1403 | |
| 1404 | /** |
| 1405 | * mbox_post_cmd - issue a mailbox command |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 1406 | * @adapter : controller's soft state |
| 1407 | * @scb : command to be issued |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1408 | * |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 1409 | * Post the command to the controller if mailbox is available. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1410 | */ |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame] | 1411 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1412 | mbox_post_cmd(adapter_t *adapter, scb_t *scb) |
| 1413 | { |
| 1414 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 1415 | mbox64_t *mbox64; |
| 1416 | mbox_t *mbox; |
| 1417 | mbox_ccb_t *ccb; |
| 1418 | unsigned long flags; |
| 1419 | unsigned int i = 0; |
| 1420 | |
| 1421 | |
| 1422 | ccb = (mbox_ccb_t *)scb->ccb; |
| 1423 | mbox = raid_dev->mbox; |
| 1424 | mbox64 = raid_dev->mbox64; |
| 1425 | |
| 1426 | /* |
| 1427 | * Check for busy mailbox. If it is, return failure - the caller |
| 1428 | * should retry later. |
| 1429 | */ |
| 1430 | spin_lock_irqsave(MAILBOX_LOCK(raid_dev), flags); |
| 1431 | |
| 1432 | if (unlikely(mbox->busy)) { |
| 1433 | do { |
| 1434 | udelay(1); |
| 1435 | i++; |
| 1436 | rmb(); |
| 1437 | } while(mbox->busy && (i < max_mbox_busy_wait)); |
| 1438 | |
| 1439 | if (mbox->busy) { |
| 1440 | |
| 1441 | spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev), flags); |
| 1442 | |
| 1443 | return -1; |
| 1444 | } |
| 1445 | } |
| 1446 | |
| 1447 | |
| 1448 | // Copy this command's mailbox data into "adapter's" mailbox |
| 1449 | memcpy((caddr_t)mbox64, (caddr_t)ccb->mbox64, 22); |
| 1450 | mbox->cmdid = scb->sno; |
| 1451 | |
| 1452 | adapter->outstanding_cmds++; |
| 1453 | |
FUJITA Tomonori | 32fbac2 | 2007-05-14 20:13:44 +0900 | [diff] [blame] | 1454 | if (scb->dma_direction == PCI_DMA_TODEVICE) |
| 1455 | pci_dma_sync_sg_for_device(adapter->pdev, |
| 1456 | scsi_sglist(scb->scp), |
| 1457 | scsi_sg_count(scb->scp), |
| 1458 | PCI_DMA_TODEVICE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1459 | |
| 1460 | mbox->busy = 1; // Set busy |
| 1461 | mbox->poll = 0; |
| 1462 | mbox->ack = 0; |
| 1463 | wmb(); |
| 1464 | |
| 1465 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); |
| 1466 | |
| 1467 | spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev), flags); |
| 1468 | |
| 1469 | return 0; |
| 1470 | } |
| 1471 | |
| 1472 | |
| 1473 | /** |
| 1474 | * megaraid_queue_command - generic queue entry point for all LLDs |
| 1475 | * @scp : pointer to the scsi command to be executed |
| 1476 | * @done : callback routine to be called after the cmd has be completed |
| 1477 | * |
| 1478 | * Queue entry point for mailbox based controllers. |
| 1479 | */ |
| 1480 | static int |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 1481 | megaraid_queue_command(struct scsi_cmnd *scp, void (*done)(struct scsi_cmnd *)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1482 | { |
| 1483 | adapter_t *adapter; |
| 1484 | scb_t *scb; |
| 1485 | int if_busy; |
| 1486 | |
| 1487 | adapter = SCP2ADAPTER(scp); |
| 1488 | scp->scsi_done = done; |
| 1489 | scp->result = 0; |
| 1490 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1491 | /* |
| 1492 | * Allocate and build a SCB request |
| 1493 | * if_busy flag will be set if megaraid_mbox_build_cmd() command could |
| 1494 | * not allocate scb. We will return non-zero status in that case. |
| 1495 | * NOTE: scb can be null even though certain commands completed |
| 1496 | * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, it would |
| 1497 | * return 0 in that case, and we would do the callback right away. |
| 1498 | */ |
| 1499 | if_busy = 0; |
Christoph Hellwig | f2c8dc4 | 2005-10-31 21:06:02 +0100 | [diff] [blame] | 1500 | scb = megaraid_mbox_build_cmd(adapter, scp, &if_busy); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1501 | if (!scb) { // command already completed |
| 1502 | done(scp); |
| 1503 | return 0; |
| 1504 | } |
| 1505 | |
Christoph Hellwig | f2c8dc4 | 2005-10-31 21:06:02 +0100 | [diff] [blame] | 1506 | megaraid_mbox_runpendq(adapter, scb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1507 | return if_busy; |
| 1508 | } |
| 1509 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1510 | /** |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 1511 | * megaraid_mbox_build_cmd - transform the mid-layer scsi commands |
| 1512 | * @adapter : controller's soft state |
| 1513 | * @scp : mid-layer scsi command pointer |
| 1514 | * @busy : set if request could not be completed because of lack of |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1515 | * resources |
| 1516 | * |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 1517 | * Transform the mid-layer scsi command to megaraid firmware lingua. |
| 1518 | * Convert the command issued by mid-layer to format understood by megaraid |
| 1519 | * firmware. We also complete certain commands without sending them to firmware. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1520 | */ |
| 1521 | static scb_t * |
| 1522 | megaraid_mbox_build_cmd(adapter_t *adapter, struct scsi_cmnd *scp, int *busy) |
| 1523 | { |
| 1524 | mraid_device_t *rdev = ADAP2RAIDDEV(adapter); |
| 1525 | int channel; |
| 1526 | int target; |
| 1527 | int islogical; |
| 1528 | mbox_ccb_t *ccb; |
| 1529 | mraid_passthru_t *pthru; |
| 1530 | mbox64_t *mbox64; |
| 1531 | mbox_t *mbox; |
| 1532 | scb_t *scb; |
| 1533 | char skip[] = "skipping"; |
| 1534 | char scan[] = "scanning"; |
| 1535 | char *ss; |
| 1536 | |
| 1537 | |
| 1538 | /* |
| 1539 | * Get the appropriate device map for the device this command is |
| 1540 | * intended for |
| 1541 | */ |
| 1542 | MRAID_GET_DEVICE_MAP(adapter, scp, channel, target, islogical); |
| 1543 | |
| 1544 | /* |
| 1545 | * Logical drive commands |
| 1546 | */ |
| 1547 | if (islogical) { |
| 1548 | switch (scp->cmnd[0]) { |
| 1549 | case TEST_UNIT_READY: |
| 1550 | /* |
| 1551 | * Do we support clustering and is the support enabled |
| 1552 | * If no, return success always |
| 1553 | */ |
| 1554 | if (!adapter->ha) { |
| 1555 | scp->result = (DID_OK << 16); |
| 1556 | return NULL; |
| 1557 | } |
| 1558 | |
| 1559 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { |
| 1560 | scp->result = (DID_ERROR << 16); |
| 1561 | *busy = 1; |
| 1562 | return NULL; |
| 1563 | } |
| 1564 | |
| 1565 | scb->dma_direction = scp->sc_data_direction; |
| 1566 | scb->dev_channel = 0xFF; |
| 1567 | scb->dev_target = target; |
| 1568 | ccb = (mbox_ccb_t *)scb->ccb; |
| 1569 | |
| 1570 | /* |
| 1571 | * The command id will be provided by the command |
| 1572 | * issuance routine |
| 1573 | */ |
| 1574 | ccb->raw_mbox[0] = CLUSTER_CMD; |
| 1575 | ccb->raw_mbox[2] = RESERVATION_STATUS; |
| 1576 | ccb->raw_mbox[3] = target; |
| 1577 | |
| 1578 | return scb; |
| 1579 | |
| 1580 | case MODE_SENSE: |
FUJITA Tomonori | 32fbac2 | 2007-05-14 20:13:44 +0900 | [diff] [blame] | 1581 | { |
| 1582 | struct scatterlist *sgl; |
| 1583 | caddr_t vaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1584 | |
FUJITA Tomonori | 32fbac2 | 2007-05-14 20:13:44 +0900 | [diff] [blame] | 1585 | sgl = scsi_sglist(scp); |
| 1586 | if (sgl->page) { |
| 1587 | vaddr = (caddr_t) |
| 1588 | (page_address((&sgl[0])->page) |
| 1589 | + (&sgl[0])->offset); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1590 | |
FUJITA Tomonori | 32fbac2 | 2007-05-14 20:13:44 +0900 | [diff] [blame] | 1591 | memset(vaddr, 0, scp->cmnd[4]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1592 | } |
| 1593 | else { |
FUJITA Tomonori | 32fbac2 | 2007-05-14 20:13:44 +0900 | [diff] [blame] | 1594 | con_log(CL_ANN, (KERN_WARNING |
| 1595 | "megaraid mailbox: invalid sg:%d\n", |
| 1596 | __LINE__)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1597 | } |
FUJITA Tomonori | 32fbac2 | 2007-05-14 20:13:44 +0900 | [diff] [blame] | 1598 | } |
| 1599 | scp->result = (DID_OK << 16); |
| 1600 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1601 | |
| 1602 | case INQUIRY: |
| 1603 | /* |
| 1604 | * Display the channel scan for logical drives |
| 1605 | * Do not display scan for a channel if already done. |
| 1606 | */ |
| 1607 | if (!(rdev->last_disp & (1L << SCP2CHANNEL(scp)))) { |
| 1608 | |
| 1609 | con_log(CL_ANN, (KERN_INFO |
| 1610 | "scsi[%d]: scanning scsi channel %d", |
| 1611 | adapter->host->host_no, |
| 1612 | SCP2CHANNEL(scp))); |
| 1613 | |
| 1614 | con_log(CL_ANN, ( |
| 1615 | " [virtual] for logical drives\n")); |
| 1616 | |
| 1617 | rdev->last_disp |= (1L << SCP2CHANNEL(scp)); |
| 1618 | } |
| 1619 | |
Ju, Seokmann | aa677bc | 2006-07-25 08:44:58 -0600 | [diff] [blame] | 1620 | if (scp->cmnd[1] & MEGA_SCSI_INQ_EVPD) { |
| 1621 | scp->sense_buffer[0] = 0x70; |
| 1622 | scp->sense_buffer[2] = ILLEGAL_REQUEST; |
| 1623 | scp->sense_buffer[12] = MEGA_INVALID_FIELD_IN_CDB; |
| 1624 | scp->result = CHECK_CONDITION << 1; |
| 1625 | return NULL; |
| 1626 | } |
| 1627 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1628 | /* Fall through */ |
| 1629 | |
| 1630 | case READ_CAPACITY: |
| 1631 | /* |
| 1632 | * Do not allow LUN > 0 for logical drives and |
| 1633 | * requests for more than 40 logical drives |
| 1634 | */ |
| 1635 | if (SCP2LUN(scp)) { |
| 1636 | scp->result = (DID_BAD_TARGET << 16); |
| 1637 | return NULL; |
| 1638 | } |
| 1639 | if ((target % 0x80) >= MAX_LOGICAL_DRIVES_40LD) { |
| 1640 | scp->result = (DID_BAD_TARGET << 16); |
| 1641 | return NULL; |
| 1642 | } |
| 1643 | |
| 1644 | |
| 1645 | /* Allocate a SCB and initialize passthru */ |
| 1646 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { |
| 1647 | scp->result = (DID_ERROR << 16); |
| 1648 | *busy = 1; |
| 1649 | return NULL; |
| 1650 | } |
| 1651 | |
| 1652 | ccb = (mbox_ccb_t *)scb->ccb; |
| 1653 | scb->dev_channel = 0xFF; |
| 1654 | scb->dev_target = target; |
| 1655 | pthru = ccb->pthru; |
| 1656 | mbox = ccb->mbox; |
| 1657 | mbox64 = ccb->mbox64; |
| 1658 | |
| 1659 | pthru->timeout = 0; |
| 1660 | pthru->ars = 1; |
| 1661 | pthru->reqsenselen = 14; |
| 1662 | pthru->islogical = 1; |
| 1663 | pthru->logdrv = target; |
| 1664 | pthru->cdblen = scp->cmd_len; |
| 1665 | memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); |
| 1666 | |
| 1667 | mbox->cmd = MBOXCMD_PASSTHRU64; |
| 1668 | scb->dma_direction = scp->sc_data_direction; |
| 1669 | |
FUJITA Tomonori | 32fbac2 | 2007-05-14 20:13:44 +0900 | [diff] [blame] | 1670 | pthru->dataxferlen = scsi_bufflen(scp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1671 | pthru->dataxferaddr = ccb->sgl_dma_h; |
| 1672 | pthru->numsge = megaraid_mbox_mksgl(adapter, |
| 1673 | scb); |
| 1674 | |
| 1675 | mbox->xferaddr = 0xFFFFFFFF; |
| 1676 | mbox64->xferaddr_lo = (uint32_t )ccb->pthru_dma_h; |
| 1677 | mbox64->xferaddr_hi = 0; |
| 1678 | |
| 1679 | return scb; |
| 1680 | |
| 1681 | case READ_6: |
| 1682 | case WRITE_6: |
| 1683 | case READ_10: |
| 1684 | case WRITE_10: |
| 1685 | case READ_12: |
| 1686 | case WRITE_12: |
| 1687 | |
| 1688 | /* |
| 1689 | * Allocate a SCB and initialize mailbox |
| 1690 | */ |
| 1691 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { |
| 1692 | scp->result = (DID_ERROR << 16); |
| 1693 | *busy = 1; |
| 1694 | return NULL; |
| 1695 | } |
| 1696 | ccb = (mbox_ccb_t *)scb->ccb; |
| 1697 | scb->dev_channel = 0xFF; |
| 1698 | scb->dev_target = target; |
| 1699 | mbox = ccb->mbox; |
| 1700 | mbox64 = ccb->mbox64; |
| 1701 | mbox->logdrv = target; |
| 1702 | |
| 1703 | /* |
| 1704 | * A little HACK: 2nd bit is zero for all scsi read |
| 1705 | * commands and is set for all scsi write commands |
| 1706 | */ |
| 1707 | mbox->cmd = (scp->cmnd[0] & 0x02) ? MBOXCMD_LWRITE64: |
| 1708 | MBOXCMD_LREAD64 ; |
| 1709 | |
| 1710 | /* |
| 1711 | * 6-byte READ(0x08) or WRITE(0x0A) cdb |
| 1712 | */ |
| 1713 | if (scp->cmd_len == 6) { |
| 1714 | mbox->numsectors = (uint32_t)scp->cmnd[4]; |
| 1715 | mbox->lba = |
| 1716 | ((uint32_t)scp->cmnd[1] << 16) | |
| 1717 | ((uint32_t)scp->cmnd[2] << 8) | |
| 1718 | (uint32_t)scp->cmnd[3]; |
| 1719 | |
| 1720 | mbox->lba &= 0x1FFFFF; |
| 1721 | } |
| 1722 | |
| 1723 | /* |
| 1724 | * 10-byte READ(0x28) or WRITE(0x2A) cdb |
| 1725 | */ |
| 1726 | else if (scp->cmd_len == 10) { |
| 1727 | mbox->numsectors = |
| 1728 | (uint32_t)scp->cmnd[8] | |
| 1729 | ((uint32_t)scp->cmnd[7] << 8); |
| 1730 | mbox->lba = |
| 1731 | ((uint32_t)scp->cmnd[2] << 24) | |
| 1732 | ((uint32_t)scp->cmnd[3] << 16) | |
| 1733 | ((uint32_t)scp->cmnd[4] << 8) | |
| 1734 | (uint32_t)scp->cmnd[5]; |
| 1735 | } |
| 1736 | |
| 1737 | /* |
| 1738 | * 12-byte READ(0xA8) or WRITE(0xAA) cdb |
| 1739 | */ |
| 1740 | else if (scp->cmd_len == 12) { |
| 1741 | mbox->lba = |
| 1742 | ((uint32_t)scp->cmnd[2] << 24) | |
| 1743 | ((uint32_t)scp->cmnd[3] << 16) | |
| 1744 | ((uint32_t)scp->cmnd[4] << 8) | |
| 1745 | (uint32_t)scp->cmnd[5]; |
| 1746 | |
| 1747 | mbox->numsectors = |
| 1748 | ((uint32_t)scp->cmnd[6] << 24) | |
| 1749 | ((uint32_t)scp->cmnd[7] << 16) | |
| 1750 | ((uint32_t)scp->cmnd[8] << 8) | |
| 1751 | (uint32_t)scp->cmnd[9]; |
| 1752 | } |
| 1753 | else { |
| 1754 | con_log(CL_ANN, (KERN_WARNING |
| 1755 | "megaraid: unsupported CDB length\n")); |
| 1756 | |
| 1757 | megaraid_dealloc_scb(adapter, scb); |
| 1758 | |
| 1759 | scp->result = (DID_ERROR << 16); |
| 1760 | return NULL; |
| 1761 | } |
| 1762 | |
| 1763 | scb->dma_direction = scp->sc_data_direction; |
| 1764 | |
| 1765 | // Calculate Scatter-Gather info |
| 1766 | mbox64->xferaddr_lo = (uint32_t )ccb->sgl_dma_h; |
| 1767 | mbox->numsge = megaraid_mbox_mksgl(adapter, |
| 1768 | scb); |
| 1769 | mbox->xferaddr = 0xFFFFFFFF; |
| 1770 | mbox64->xferaddr_hi = 0; |
| 1771 | |
| 1772 | return scb; |
| 1773 | |
| 1774 | case RESERVE: |
| 1775 | case RELEASE: |
| 1776 | /* |
| 1777 | * Do we support clustering and is the support enabled |
| 1778 | */ |
| 1779 | if (!adapter->ha) { |
| 1780 | scp->result = (DID_BAD_TARGET << 16); |
| 1781 | return NULL; |
| 1782 | } |
| 1783 | |
| 1784 | /* |
| 1785 | * Allocate a SCB and initialize mailbox |
| 1786 | */ |
| 1787 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { |
| 1788 | scp->result = (DID_ERROR << 16); |
| 1789 | *busy = 1; |
| 1790 | return NULL; |
| 1791 | } |
| 1792 | |
| 1793 | ccb = (mbox_ccb_t *)scb->ccb; |
| 1794 | scb->dev_channel = 0xFF; |
| 1795 | scb->dev_target = target; |
| 1796 | ccb->raw_mbox[0] = CLUSTER_CMD; |
| 1797 | ccb->raw_mbox[2] = (scp->cmnd[0] == RESERVE) ? |
| 1798 | RESERVE_LD : RELEASE_LD; |
| 1799 | |
| 1800 | ccb->raw_mbox[3] = target; |
| 1801 | scb->dma_direction = scp->sc_data_direction; |
| 1802 | |
| 1803 | return scb; |
| 1804 | |
| 1805 | default: |
| 1806 | scp->result = (DID_BAD_TARGET << 16); |
| 1807 | return NULL; |
| 1808 | } |
| 1809 | } |
| 1810 | else { // Passthru device commands |
| 1811 | |
| 1812 | // Do not allow access to target id > 15 or LUN > 7 |
| 1813 | if (target > 15 || SCP2LUN(scp) > 7) { |
| 1814 | scp->result = (DID_BAD_TARGET << 16); |
| 1815 | return NULL; |
| 1816 | } |
| 1817 | |
| 1818 | // if fast load option was set and scan for last device is |
| 1819 | // over, reset the fast_load flag so that during a possible |
| 1820 | // next scan, devices can be made available |
| 1821 | if (rdev->fast_load && (target == 15) && |
| 1822 | (SCP2CHANNEL(scp) == adapter->max_channel -1)) { |
| 1823 | |
| 1824 | con_log(CL_ANN, (KERN_INFO |
| 1825 | "megaraid[%d]: physical device scan re-enabled\n", |
| 1826 | adapter->host->host_no)); |
| 1827 | rdev->fast_load = 0; |
| 1828 | } |
| 1829 | |
| 1830 | /* |
| 1831 | * Display the channel scan for physical devices |
| 1832 | */ |
| 1833 | if (!(rdev->last_disp & (1L << SCP2CHANNEL(scp)))) { |
| 1834 | |
| 1835 | ss = rdev->fast_load ? skip : scan; |
| 1836 | |
| 1837 | con_log(CL_ANN, (KERN_INFO |
| 1838 | "scsi[%d]: %s scsi channel %d [Phy %d]", |
| 1839 | adapter->host->host_no, ss, SCP2CHANNEL(scp), |
| 1840 | channel)); |
| 1841 | |
| 1842 | con_log(CL_ANN, ( |
| 1843 | " for non-raid devices\n")); |
| 1844 | |
| 1845 | rdev->last_disp |= (1L << SCP2CHANNEL(scp)); |
| 1846 | } |
| 1847 | |
| 1848 | // disable channel sweep if fast load option given |
| 1849 | if (rdev->fast_load) { |
| 1850 | scp->result = (DID_BAD_TARGET << 16); |
| 1851 | return NULL; |
| 1852 | } |
| 1853 | |
| 1854 | // Allocate a SCB and initialize passthru |
| 1855 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { |
| 1856 | scp->result = (DID_ERROR << 16); |
| 1857 | *busy = 1; |
| 1858 | return NULL; |
| 1859 | } |
| 1860 | |
| 1861 | ccb = (mbox_ccb_t *)scb->ccb; |
| 1862 | scb->dev_channel = channel; |
| 1863 | scb->dev_target = target; |
| 1864 | scb->dma_direction = scp->sc_data_direction; |
| 1865 | mbox = ccb->mbox; |
| 1866 | mbox64 = ccb->mbox64; |
| 1867 | |
| 1868 | // Does this firmware support extended CDBs |
| 1869 | if (adapter->max_cdb_sz == 16) { |
| 1870 | mbox->cmd = MBOXCMD_EXTPTHRU; |
| 1871 | |
| 1872 | megaraid_mbox_prepare_epthru(adapter, scb, scp); |
| 1873 | |
| 1874 | mbox64->xferaddr_lo = (uint32_t)ccb->epthru_dma_h; |
| 1875 | mbox64->xferaddr_hi = 0; |
| 1876 | mbox->xferaddr = 0xFFFFFFFF; |
| 1877 | } |
| 1878 | else { |
| 1879 | mbox->cmd = MBOXCMD_PASSTHRU64; |
| 1880 | |
| 1881 | megaraid_mbox_prepare_pthru(adapter, scb, scp); |
| 1882 | |
| 1883 | mbox64->xferaddr_lo = (uint32_t)ccb->pthru_dma_h; |
| 1884 | mbox64->xferaddr_hi = 0; |
| 1885 | mbox->xferaddr = 0xFFFFFFFF; |
| 1886 | } |
| 1887 | return scb; |
| 1888 | } |
| 1889 | |
| 1890 | // NOT REACHED |
| 1891 | } |
| 1892 | |
| 1893 | |
| 1894 | /** |
| 1895 | * megaraid_mbox_runpendq - execute commands queued in the pending queue |
| 1896 | * @adapter : controller's soft state |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 1897 | * @scb_q : SCB to be queued in the pending list |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1898 | * |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 1899 | * Scan the pending list for commands which are not yet issued and try to |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1900 | * post to the controller. The SCB can be a null pointer, which would indicate |
| 1901 | * no SCB to be queue, just try to execute the ones in the pending list. |
| 1902 | * |
| 1903 | * NOTE: We do not actually traverse the pending list. The SCBs are plucked |
| 1904 | * out from the head of the pending list. If it is successfully issued, the |
| 1905 | * next SCB is at the head now. |
| 1906 | */ |
| 1907 | static void |
| 1908 | megaraid_mbox_runpendq(adapter_t *adapter, scb_t *scb_q) |
| 1909 | { |
| 1910 | scb_t *scb; |
| 1911 | unsigned long flags; |
| 1912 | |
| 1913 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); |
| 1914 | |
| 1915 | if (scb_q) { |
| 1916 | scb_q->state = SCB_PENDQ; |
| 1917 | list_add_tail(&scb_q->list, &adapter->pend_list); |
| 1918 | } |
| 1919 | |
| 1920 | // if the adapter in not in quiescent mode, post the commands to FW |
| 1921 | if (adapter->quiescent) { |
| 1922 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); |
| 1923 | return; |
| 1924 | } |
| 1925 | |
| 1926 | while (!list_empty(&adapter->pend_list)) { |
| 1927 | |
| 1928 | assert_spin_locked(PENDING_LIST_LOCK(adapter)); |
| 1929 | |
| 1930 | scb = list_entry(adapter->pend_list.next, scb_t, list); |
| 1931 | |
| 1932 | // remove the scb from the pending list and try to |
| 1933 | // issue. If we are unable to issue it, put back in |
| 1934 | // the pending list and return |
| 1935 | |
| 1936 | list_del_init(&scb->list); |
| 1937 | |
| 1938 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); |
| 1939 | |
| 1940 | // if mailbox was busy, return SCB back to pending |
| 1941 | // list. Make sure to add at the head, since that's |
| 1942 | // where it would have been removed from |
| 1943 | |
| 1944 | scb->state = SCB_ISSUED; |
| 1945 | |
| 1946 | if (mbox_post_cmd(adapter, scb) != 0) { |
| 1947 | |
| 1948 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); |
| 1949 | |
| 1950 | scb->state = SCB_PENDQ; |
| 1951 | |
| 1952 | list_add(&scb->list, &adapter->pend_list); |
| 1953 | |
| 1954 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), |
| 1955 | flags); |
| 1956 | |
| 1957 | return; |
| 1958 | } |
| 1959 | |
| 1960 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); |
| 1961 | } |
| 1962 | |
| 1963 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); |
| 1964 | |
| 1965 | |
| 1966 | return; |
| 1967 | } |
| 1968 | |
| 1969 | |
| 1970 | /** |
| 1971 | * megaraid_mbox_prepare_pthru - prepare a command for physical devices |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 1972 | * @adapter : pointer to controller's soft state |
| 1973 | * @scb : scsi control block |
| 1974 | * @scp : scsi command from the mid-layer |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1975 | * |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 1976 | * Prepare a command for the scsi physical devices. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1977 | */ |
| 1978 | static void |
| 1979 | megaraid_mbox_prepare_pthru(adapter_t *adapter, scb_t *scb, |
| 1980 | struct scsi_cmnd *scp) |
| 1981 | { |
| 1982 | mbox_ccb_t *ccb; |
| 1983 | mraid_passthru_t *pthru; |
| 1984 | uint8_t channel; |
| 1985 | uint8_t target; |
| 1986 | |
| 1987 | ccb = (mbox_ccb_t *)scb->ccb; |
| 1988 | pthru = ccb->pthru; |
| 1989 | channel = scb->dev_channel; |
| 1990 | target = scb->dev_target; |
| 1991 | |
| 1992 | // 0=6sec, 1=60sec, 2=10min, 3=3hrs, 4=NO timeout |
| 1993 | pthru->timeout = 4; |
| 1994 | pthru->ars = 1; |
| 1995 | pthru->islogical = 0; |
| 1996 | pthru->channel = 0; |
| 1997 | pthru->target = (channel << 4) | target; |
| 1998 | pthru->logdrv = SCP2LUN(scp); |
| 1999 | pthru->reqsenselen = 14; |
| 2000 | pthru->cdblen = scp->cmd_len; |
| 2001 | |
| 2002 | memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); |
| 2003 | |
FUJITA Tomonori | 32fbac2 | 2007-05-14 20:13:44 +0900 | [diff] [blame] | 2004 | if (scsi_bufflen(scp)) { |
| 2005 | pthru->dataxferlen = scsi_bufflen(scp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2006 | pthru->dataxferaddr = ccb->sgl_dma_h; |
| 2007 | pthru->numsge = megaraid_mbox_mksgl(adapter, scb); |
| 2008 | } |
| 2009 | else { |
| 2010 | pthru->dataxferaddr = 0; |
| 2011 | pthru->dataxferlen = 0; |
| 2012 | pthru->numsge = 0; |
| 2013 | } |
| 2014 | return; |
| 2015 | } |
| 2016 | |
| 2017 | |
| 2018 | /** |
| 2019 | * megaraid_mbox_prepare_epthru - prepare a command for physical devices |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 2020 | * @adapter : pointer to controller's soft state |
| 2021 | * @scb : scsi control block |
| 2022 | * @scp : scsi command from the mid-layer |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2023 | * |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 2024 | * Prepare a command for the scsi physical devices. This rountine prepares |
| 2025 | * commands for devices which can take extended CDBs (>10 bytes). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2026 | */ |
| 2027 | static void |
| 2028 | megaraid_mbox_prepare_epthru(adapter_t *adapter, scb_t *scb, |
| 2029 | struct scsi_cmnd *scp) |
| 2030 | { |
| 2031 | mbox_ccb_t *ccb; |
| 2032 | mraid_epassthru_t *epthru; |
| 2033 | uint8_t channel; |
| 2034 | uint8_t target; |
| 2035 | |
| 2036 | ccb = (mbox_ccb_t *)scb->ccb; |
| 2037 | epthru = ccb->epthru; |
| 2038 | channel = scb->dev_channel; |
| 2039 | target = scb->dev_target; |
| 2040 | |
| 2041 | // 0=6sec, 1=60sec, 2=10min, 3=3hrs, 4=NO timeout |
| 2042 | epthru->timeout = 4; |
| 2043 | epthru->ars = 1; |
| 2044 | epthru->islogical = 0; |
| 2045 | epthru->channel = 0; |
| 2046 | epthru->target = (channel << 4) | target; |
| 2047 | epthru->logdrv = SCP2LUN(scp); |
| 2048 | epthru->reqsenselen = 14; |
| 2049 | epthru->cdblen = scp->cmd_len; |
| 2050 | |
| 2051 | memcpy(epthru->cdb, scp->cmnd, scp->cmd_len); |
| 2052 | |
FUJITA Tomonori | 32fbac2 | 2007-05-14 20:13:44 +0900 | [diff] [blame] | 2053 | if (scsi_bufflen(scp)) { |
| 2054 | epthru->dataxferlen = scsi_bufflen(scp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2055 | epthru->dataxferaddr = ccb->sgl_dma_h; |
| 2056 | epthru->numsge = megaraid_mbox_mksgl(adapter, scb); |
| 2057 | } |
| 2058 | else { |
| 2059 | epthru->dataxferaddr = 0; |
| 2060 | epthru->dataxferlen = 0; |
| 2061 | epthru->numsge = 0; |
| 2062 | } |
| 2063 | return; |
| 2064 | } |
| 2065 | |
| 2066 | |
| 2067 | /** |
| 2068 | * megaraid_ack_sequence - interrupt ack sequence for memory mapped HBAs |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 2069 | * @adapter : controller's soft state |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2070 | * |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 2071 | * Interrupt acknowledgement sequence for memory mapped HBAs. Find out the |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2072 | * completed command and put them on the completed list for later processing. |
| 2073 | * |
| 2074 | * Returns: 1 if the interrupt is valid, 0 otherwise |
| 2075 | */ |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame] | 2076 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2077 | megaraid_ack_sequence(adapter_t *adapter) |
| 2078 | { |
| 2079 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 2080 | mbox_t *mbox; |
| 2081 | scb_t *scb; |
| 2082 | uint8_t nstatus; |
| 2083 | uint8_t completed[MBOX_MAX_FIRMWARE_STATUS]; |
| 2084 | struct list_head clist; |
| 2085 | int handled; |
| 2086 | uint32_t dword; |
| 2087 | unsigned long flags; |
| 2088 | int i, j; |
| 2089 | |
| 2090 | |
| 2091 | mbox = raid_dev->mbox; |
| 2092 | |
| 2093 | // move the SCBs from the firmware completed array to our local list |
| 2094 | INIT_LIST_HEAD(&clist); |
| 2095 | |
| 2096 | // loop till F/W has more commands for us to complete |
| 2097 | handled = 0; |
| 2098 | spin_lock_irqsave(MAILBOX_LOCK(raid_dev), flags); |
| 2099 | do { |
| 2100 | /* |
| 2101 | * Check if a valid interrupt is pending. If found, force the |
| 2102 | * interrupt line low. |
| 2103 | */ |
| 2104 | dword = RDOUTDOOR(raid_dev); |
| 2105 | if (dword != 0x10001234) break; |
| 2106 | |
| 2107 | handled = 1; |
| 2108 | |
| 2109 | WROUTDOOR(raid_dev, 0x10001234); |
| 2110 | |
| 2111 | nstatus = 0; |
| 2112 | // wait for valid numstatus to post |
| 2113 | for (i = 0; i < 0xFFFFF; i++) { |
| 2114 | if (mbox->numstatus != 0xFF) { |
| 2115 | nstatus = mbox->numstatus; |
| 2116 | break; |
| 2117 | } |
| 2118 | rmb(); |
| 2119 | } |
| 2120 | mbox->numstatus = 0xFF; |
| 2121 | |
| 2122 | adapter->outstanding_cmds -= nstatus; |
| 2123 | |
| 2124 | for (i = 0; i < nstatus; i++) { |
| 2125 | |
| 2126 | // wait for valid command index to post |
| 2127 | for (j = 0; j < 0xFFFFF; j++) { |
| 2128 | if (mbox->completed[i] != 0xFF) break; |
| 2129 | rmb(); |
| 2130 | } |
| 2131 | completed[i] = mbox->completed[i]; |
| 2132 | mbox->completed[i] = 0xFF; |
| 2133 | |
| 2134 | if (completed[i] == 0xFF) { |
| 2135 | con_log(CL_ANN, (KERN_CRIT |
| 2136 | "megaraid: command posting timed out\n")); |
| 2137 | |
| 2138 | BUG(); |
| 2139 | continue; |
| 2140 | } |
| 2141 | |
| 2142 | // Get SCB associated with this command id |
| 2143 | if (completed[i] >= MBOX_MAX_SCSI_CMDS) { |
| 2144 | // a cmm command |
| 2145 | scb = adapter->uscb_list + (completed[i] - |
| 2146 | MBOX_MAX_SCSI_CMDS); |
| 2147 | } |
| 2148 | else { |
| 2149 | // an os command |
| 2150 | scb = adapter->kscb_list + completed[i]; |
| 2151 | } |
| 2152 | |
| 2153 | scb->status = mbox->status; |
| 2154 | list_add_tail(&scb->list, &clist); |
| 2155 | } |
| 2156 | |
| 2157 | // Acknowledge interrupt |
| 2158 | WRINDOOR(raid_dev, 0x02); |
| 2159 | |
| 2160 | } while(1); |
| 2161 | |
| 2162 | spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev), flags); |
| 2163 | |
| 2164 | |
| 2165 | // put the completed commands in the completed list. DPC would |
| 2166 | // complete these commands later |
| 2167 | spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter), flags); |
| 2168 | |
| 2169 | list_splice(&clist, &adapter->completed_list); |
| 2170 | |
| 2171 | spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), flags); |
| 2172 | |
| 2173 | |
| 2174 | // schedule the DPC if there is some work for it |
| 2175 | if (handled) |
| 2176 | tasklet_schedule(&adapter->dpc_h); |
| 2177 | |
| 2178 | return handled; |
| 2179 | } |
| 2180 | |
| 2181 | |
| 2182 | /** |
| 2183 | * megaraid_isr - isr for memory based mailbox based controllers |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 2184 | * @irq : irq |
| 2185 | * @devp : pointer to our soft state |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2186 | * |
| 2187 | * Interrupt service routine for memory-mapped mailbox controllers. |
| 2188 | */ |
| 2189 | static irqreturn_t |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 2190 | megaraid_isr(int irq, void *devp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2191 | { |
| 2192 | adapter_t *adapter = devp; |
| 2193 | int handled; |
| 2194 | |
| 2195 | handled = megaraid_ack_sequence(adapter); |
| 2196 | |
| 2197 | /* Loop through any pending requests */ |
| 2198 | if (!adapter->quiescent) { |
| 2199 | megaraid_mbox_runpendq(adapter, NULL); |
| 2200 | } |
| 2201 | |
| 2202 | return IRQ_RETVAL(handled); |
| 2203 | } |
| 2204 | |
| 2205 | |
| 2206 | /** |
| 2207 | * megaraid_mbox_sync_scb - sync kernel buffers |
| 2208 | * @adapter : controller's soft state |
| 2209 | * @scb : pointer to the resource packet |
| 2210 | * |
| 2211 | * DMA sync if required. |
| 2212 | */ |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame] | 2213 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2214 | megaraid_mbox_sync_scb(adapter_t *adapter, scb_t *scb) |
| 2215 | { |
| 2216 | mbox_ccb_t *ccb; |
| 2217 | |
| 2218 | ccb = (mbox_ccb_t *)scb->ccb; |
| 2219 | |
FUJITA Tomonori | 32fbac2 | 2007-05-14 20:13:44 +0900 | [diff] [blame] | 2220 | if (scb->dma_direction == PCI_DMA_FROMDEVICE) |
| 2221 | pci_dma_sync_sg_for_cpu(adapter->pdev, |
| 2222 | scsi_sglist(scb->scp), |
| 2223 | scsi_sg_count(scb->scp), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2224 | PCI_DMA_FROMDEVICE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2225 | |
FUJITA Tomonori | 32fbac2 | 2007-05-14 20:13:44 +0900 | [diff] [blame] | 2226 | scsi_dma_unmap(scb->scp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2227 | return; |
| 2228 | } |
| 2229 | |
| 2230 | |
| 2231 | /** |
| 2232 | * megaraid_mbox_dpc - the tasklet to complete the commands from completed list |
| 2233 | * @devp : pointer to HBA soft state |
| 2234 | * |
| 2235 | * Pick up the commands from the completed list and send back to the owners. |
| 2236 | * This is a reentrant function and does not assume any locks are held while |
| 2237 | * it is being called. |
| 2238 | */ |
| 2239 | static void |
| 2240 | megaraid_mbox_dpc(unsigned long devp) |
| 2241 | { |
| 2242 | adapter_t *adapter = (adapter_t *)devp; |
| 2243 | mraid_device_t *raid_dev; |
| 2244 | struct list_head clist; |
| 2245 | struct scatterlist *sgl; |
| 2246 | scb_t *scb; |
| 2247 | scb_t *tmp; |
| 2248 | struct scsi_cmnd *scp; |
| 2249 | mraid_passthru_t *pthru; |
| 2250 | mraid_epassthru_t *epthru; |
| 2251 | mbox_ccb_t *ccb; |
| 2252 | int islogical; |
| 2253 | int pdev_index; |
| 2254 | int pdev_state; |
| 2255 | mbox_t *mbox; |
| 2256 | unsigned long flags; |
| 2257 | uint8_t c; |
| 2258 | int status; |
Ju, Seokmann | c005fb4 | 2006-04-27 02:33:06 -0700 | [diff] [blame] | 2259 | uioc_t *kioc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2260 | |
| 2261 | |
| 2262 | if (!adapter) return; |
| 2263 | |
| 2264 | raid_dev = ADAP2RAIDDEV(adapter); |
| 2265 | |
| 2266 | // move the SCBs from the completed list to our local list |
| 2267 | INIT_LIST_HEAD(&clist); |
| 2268 | |
| 2269 | spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter), flags); |
| 2270 | |
| 2271 | list_splice_init(&adapter->completed_list, &clist); |
| 2272 | |
| 2273 | spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), flags); |
| 2274 | |
| 2275 | |
| 2276 | list_for_each_entry_safe(scb, tmp, &clist, list) { |
| 2277 | |
| 2278 | status = scb->status; |
| 2279 | scp = scb->scp; |
| 2280 | ccb = (mbox_ccb_t *)scb->ccb; |
| 2281 | pthru = ccb->pthru; |
| 2282 | epthru = ccb->epthru; |
| 2283 | mbox = ccb->mbox; |
| 2284 | |
| 2285 | // Make sure f/w has completed a valid command |
| 2286 | if (scb->state != SCB_ISSUED) { |
| 2287 | con_log(CL_ANN, (KERN_CRIT |
| 2288 | "megaraid critical err: invalid command %d:%d:%p\n", |
| 2289 | scb->sno, scb->state, scp)); |
| 2290 | BUG(); |
| 2291 | continue; // Must never happen! |
| 2292 | } |
| 2293 | |
| 2294 | // check for the management command and complete it right away |
| 2295 | if (scb->sno >= MBOX_MAX_SCSI_CMDS) { |
| 2296 | scb->state = SCB_FREE; |
| 2297 | scb->status = status; |
| 2298 | |
| 2299 | // remove from local clist |
| 2300 | list_del_init(&scb->list); |
| 2301 | |
Ju, Seokmann | c005fb4 | 2006-04-27 02:33:06 -0700 | [diff] [blame] | 2302 | kioc = (uioc_t *)scb->gp; |
| 2303 | kioc->status = 0; |
| 2304 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2305 | megaraid_mbox_mm_done(adapter, scb); |
| 2306 | |
| 2307 | continue; |
| 2308 | } |
| 2309 | |
| 2310 | // Was an abort issued for this command earlier |
| 2311 | if (scb->state & SCB_ABORT) { |
| 2312 | con_log(CL_ANN, (KERN_NOTICE |
| 2313 | "megaraid: aborted cmd %lx[%x] completed\n", |
| 2314 | scp->serial_number, scb->sno)); |
| 2315 | } |
| 2316 | |
| 2317 | /* |
| 2318 | * If the inquiry came of a disk drive which is not part of |
| 2319 | * any RAID array, expose it to the kernel. For this to be |
| 2320 | * enabled, user must set the "megaraid_expose_unconf_disks" |
| 2321 | * flag to 1 by specifying it on module parameter list. |
| 2322 | * This would enable data migration off drives from other |
| 2323 | * configurations. |
| 2324 | */ |
| 2325 | islogical = MRAID_IS_LOGICAL(adapter, scp); |
| 2326 | if (scp->cmnd[0] == INQUIRY && status == 0 && islogical == 0 |
| 2327 | && IS_RAID_CH(raid_dev, scb->dev_channel)) { |
| 2328 | |
FUJITA Tomonori | 32fbac2 | 2007-05-14 20:13:44 +0900 | [diff] [blame] | 2329 | sgl = scsi_sglist(scp); |
| 2330 | if (sgl->page) { |
| 2331 | c = *(unsigned char *) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2332 | (page_address((&sgl[0])->page) + |
FUJITA Tomonori | 32fbac2 | 2007-05-14 20:13:44 +0900 | [diff] [blame] | 2333 | (&sgl[0])->offset); |
| 2334 | } else { |
| 2335 | con_log(CL_ANN, (KERN_WARNING |
| 2336 | "megaraid mailbox: invalid sg:%d\n", |
| 2337 | __LINE__)); |
| 2338 | c = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2339 | } |
| 2340 | |
| 2341 | if ((c & 0x1F ) == TYPE_DISK) { |
| 2342 | pdev_index = (scb->dev_channel * 16) + |
| 2343 | scb->dev_target; |
| 2344 | pdev_state = |
| 2345 | raid_dev->pdrv_state[pdev_index] & 0x0F; |
| 2346 | |
| 2347 | if (pdev_state == PDRV_ONLINE || |
| 2348 | pdev_state == PDRV_FAILED || |
| 2349 | pdev_state == PDRV_RBLD || |
| 2350 | pdev_state == PDRV_HOTSPARE || |
| 2351 | megaraid_expose_unconf_disks == 0) { |
| 2352 | |
| 2353 | status = 0xF0; |
| 2354 | } |
| 2355 | } |
| 2356 | } |
| 2357 | |
| 2358 | // Convert MegaRAID status to Linux error code |
| 2359 | switch (status) { |
| 2360 | |
| 2361 | case 0x00: |
| 2362 | |
| 2363 | scp->result = (DID_OK << 16); |
| 2364 | break; |
| 2365 | |
| 2366 | case 0x02: |
| 2367 | |
| 2368 | /* set sense_buffer and result fields */ |
| 2369 | if (mbox->cmd == MBOXCMD_PASSTHRU || |
| 2370 | mbox->cmd == MBOXCMD_PASSTHRU64) { |
| 2371 | |
| 2372 | memcpy(scp->sense_buffer, pthru->reqsensearea, |
| 2373 | 14); |
| 2374 | |
| 2375 | scp->result = DRIVER_SENSE << 24 | |
| 2376 | DID_OK << 16 | CHECK_CONDITION << 1; |
| 2377 | } |
| 2378 | else { |
| 2379 | if (mbox->cmd == MBOXCMD_EXTPTHRU) { |
| 2380 | |
| 2381 | memcpy(scp->sense_buffer, |
| 2382 | epthru->reqsensearea, 14); |
| 2383 | |
| 2384 | scp->result = DRIVER_SENSE << 24 | |
| 2385 | DID_OK << 16 | |
| 2386 | CHECK_CONDITION << 1; |
| 2387 | } else { |
| 2388 | scp->sense_buffer[0] = 0x70; |
| 2389 | scp->sense_buffer[2] = ABORTED_COMMAND; |
| 2390 | scp->result = CHECK_CONDITION << 1; |
| 2391 | } |
| 2392 | } |
| 2393 | break; |
| 2394 | |
| 2395 | case 0x08: |
| 2396 | |
| 2397 | scp->result = DID_BUS_BUSY << 16 | status; |
| 2398 | break; |
| 2399 | |
| 2400 | default: |
| 2401 | |
| 2402 | /* |
| 2403 | * If TEST_UNIT_READY fails, we know RESERVATION_STATUS |
| 2404 | * failed |
| 2405 | */ |
| 2406 | if (scp->cmnd[0] == TEST_UNIT_READY) { |
| 2407 | scp->result = DID_ERROR << 16 | |
| 2408 | RESERVATION_CONFLICT << 1; |
| 2409 | } |
| 2410 | else |
| 2411 | /* |
| 2412 | * Error code returned is 1 if Reserve or Release |
| 2413 | * failed or the input parameter is invalid |
| 2414 | */ |
| 2415 | if (status == 1 && (scp->cmnd[0] == RESERVE || |
| 2416 | scp->cmnd[0] == RELEASE)) { |
| 2417 | |
| 2418 | scp->result = DID_ERROR << 16 | |
| 2419 | RESERVATION_CONFLICT << 1; |
| 2420 | } |
| 2421 | else { |
| 2422 | scp->result = DID_BAD_TARGET << 16 | status; |
| 2423 | } |
| 2424 | } |
| 2425 | |
| 2426 | // print a debug message for all failed commands |
| 2427 | if (status) { |
| 2428 | megaraid_mbox_display_scb(adapter, scb); |
| 2429 | } |
| 2430 | |
| 2431 | // Free our internal resources and call the mid-layer callback |
| 2432 | // routine |
| 2433 | megaraid_mbox_sync_scb(adapter, scb); |
| 2434 | |
| 2435 | // remove from local clist |
| 2436 | list_del_init(&scb->list); |
| 2437 | |
| 2438 | // put back in free list |
| 2439 | megaraid_dealloc_scb(adapter, scb); |
| 2440 | |
| 2441 | // send the scsi packet back to kernel |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2442 | scp->scsi_done(scp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2443 | } |
| 2444 | |
| 2445 | return; |
| 2446 | } |
| 2447 | |
| 2448 | |
| 2449 | /** |
| 2450 | * megaraid_abort_handler - abort the scsi command |
| 2451 | * @scp : command to be aborted |
| 2452 | * |
| 2453 | * Abort a previous SCSI request. Only commands on the pending list can be |
| 2454 | * aborted. All the commands issued to the F/W must complete. |
| 2455 | **/ |
| 2456 | static int |
Christoph Hellwig | f2c8dc4 | 2005-10-31 21:06:02 +0100 | [diff] [blame] | 2457 | megaraid_abort_handler(struct scsi_cmnd *scp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2458 | { |
| 2459 | adapter_t *adapter; |
| 2460 | mraid_device_t *raid_dev; |
| 2461 | scb_t *scb; |
| 2462 | scb_t *tmp; |
| 2463 | int found; |
| 2464 | unsigned long flags; |
| 2465 | int i; |
| 2466 | |
| 2467 | |
| 2468 | adapter = SCP2ADAPTER(scp); |
| 2469 | raid_dev = ADAP2RAIDDEV(adapter); |
| 2470 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2471 | con_log(CL_ANN, (KERN_WARNING |
| 2472 | "megaraid: aborting-%ld cmd=%x <c=%d t=%d l=%d>\n", |
| 2473 | scp->serial_number, scp->cmnd[0], SCP2CHANNEL(scp), |
| 2474 | SCP2TARGET(scp), SCP2LUN(scp))); |
| 2475 | |
| 2476 | // If FW has stopped responding, simply return failure |
| 2477 | if (raid_dev->hw_error) { |
| 2478 | con_log(CL_ANN, (KERN_NOTICE |
| 2479 | "megaraid: hw error, not aborting\n")); |
| 2480 | return FAILED; |
| 2481 | } |
| 2482 | |
| 2483 | // There might a race here, where the command was completed by the |
| 2484 | // firmware and now it is on the completed list. Before we could |
| 2485 | // complete the command to the kernel in dpc, the abort came. |
| 2486 | // Find out if this is the case to avoid the race. |
| 2487 | scb = NULL; |
| 2488 | spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter), flags); |
| 2489 | list_for_each_entry_safe(scb, tmp, &adapter->completed_list, list) { |
| 2490 | |
| 2491 | if (scb->scp == scp) { // Found command |
| 2492 | |
| 2493 | list_del_init(&scb->list); // from completed list |
| 2494 | |
| 2495 | con_log(CL_ANN, (KERN_WARNING |
| 2496 | "megaraid: %ld:%d[%d:%d], abort from completed list\n", |
| 2497 | scp->serial_number, scb->sno, |
| 2498 | scb->dev_channel, scb->dev_target)); |
| 2499 | |
| 2500 | scp->result = (DID_ABORT << 16); |
| 2501 | scp->scsi_done(scp); |
| 2502 | |
| 2503 | megaraid_dealloc_scb(adapter, scb); |
| 2504 | |
| 2505 | spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), |
| 2506 | flags); |
| 2507 | |
| 2508 | return SUCCESS; |
| 2509 | } |
| 2510 | } |
| 2511 | spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), flags); |
| 2512 | |
| 2513 | |
| 2514 | // Find out if this command is still on the pending list. If it is and |
| 2515 | // was never issued, abort and return success. If the command is owned |
| 2516 | // by the firmware, we must wait for it to complete by the FW. |
| 2517 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); |
| 2518 | list_for_each_entry_safe(scb, tmp, &adapter->pend_list, list) { |
| 2519 | |
| 2520 | if (scb->scp == scp) { // Found command |
| 2521 | |
| 2522 | list_del_init(&scb->list); // from pending list |
| 2523 | |
| 2524 | ASSERT(!(scb->state & SCB_ISSUED)); |
| 2525 | |
| 2526 | con_log(CL_ANN, (KERN_WARNING |
| 2527 | "megaraid abort: %ld[%d:%d], driver owner\n", |
| 2528 | scp->serial_number, scb->dev_channel, |
| 2529 | scb->dev_target)); |
| 2530 | |
| 2531 | scp->result = (DID_ABORT << 16); |
| 2532 | scp->scsi_done(scp); |
| 2533 | |
| 2534 | megaraid_dealloc_scb(adapter, scb); |
| 2535 | |
| 2536 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), |
| 2537 | flags); |
| 2538 | |
| 2539 | return SUCCESS; |
| 2540 | } |
| 2541 | } |
| 2542 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); |
| 2543 | |
| 2544 | |
| 2545 | // Check do we even own this command, in which case this would be |
| 2546 | // owned by the firmware. The only way to locate the FW scb is to |
| 2547 | // traverse through the list of all SCB, since driver does not |
| 2548 | // maintain these SCBs on any list |
| 2549 | found = 0; |
Christoph Hellwig | f2c8dc4 | 2005-10-31 21:06:02 +0100 | [diff] [blame] | 2550 | spin_lock_irq(&adapter->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2551 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { |
| 2552 | scb = adapter->kscb_list + i; |
| 2553 | |
| 2554 | if (scb->scp == scp) { |
| 2555 | |
| 2556 | found = 1; |
| 2557 | |
| 2558 | if (!(scb->state & SCB_ISSUED)) { |
| 2559 | con_log(CL_ANN, (KERN_WARNING |
| 2560 | "megaraid abort: %ld%d[%d:%d], invalid state\n", |
| 2561 | scp->serial_number, scb->sno, scb->dev_channel, |
| 2562 | scb->dev_target)); |
| 2563 | BUG(); |
| 2564 | } |
| 2565 | else { |
| 2566 | con_log(CL_ANN, (KERN_WARNING |
| 2567 | "megaraid abort: %ld:%d[%d:%d], fw owner\n", |
| 2568 | scp->serial_number, scb->sno, scb->dev_channel, |
| 2569 | scb->dev_target)); |
| 2570 | } |
| 2571 | } |
| 2572 | } |
Christoph Hellwig | f2c8dc4 | 2005-10-31 21:06:02 +0100 | [diff] [blame] | 2573 | spin_unlock_irq(&adapter->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2574 | |
| 2575 | if (!found) { |
| 2576 | con_log(CL_ANN, (KERN_WARNING |
| 2577 | "megaraid abort: scsi cmd:%ld, do now own\n", |
| 2578 | scp->serial_number)); |
| 2579 | |
| 2580 | // FIXME: Should there be a callback for this command? |
| 2581 | return SUCCESS; |
| 2582 | } |
| 2583 | |
| 2584 | // We cannot actually abort a command owned by firmware, return |
| 2585 | // failure and wait for reset. In host reset handler, we will find out |
| 2586 | // if the HBA is still live |
| 2587 | return FAILED; |
| 2588 | } |
| 2589 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2590 | /** |
| 2591 | * megaraid_reset_handler - device reset hadler for mailbox based driver |
| 2592 | * @scp : reference command |
| 2593 | * |
| 2594 | * Reset handler for the mailbox based controller. First try to find out if |
| 2595 | * the FW is still live, in which case the outstanding commands counter mut go |
| 2596 | * down to 0. If that happens, also issue the reservation reset command to |
| 2597 | * relinquish (possible) reservations on the logical drives connected to this |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 2598 | * host. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2599 | **/ |
| 2600 | static int |
Christoph Hellwig | f2c8dc4 | 2005-10-31 21:06:02 +0100 | [diff] [blame] | 2601 | megaraid_reset_handler(struct scsi_cmnd *scp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2602 | { |
| 2603 | adapter_t *adapter; |
| 2604 | scb_t *scb; |
| 2605 | scb_t *tmp; |
| 2606 | mraid_device_t *raid_dev; |
| 2607 | unsigned long flags; |
| 2608 | uint8_t raw_mbox[sizeof(mbox_t)]; |
| 2609 | int rval; |
| 2610 | int recovery_window; |
| 2611 | int recovering; |
| 2612 | int i; |
Ju, Seokmann | c005fb4 | 2006-04-27 02:33:06 -0700 | [diff] [blame] | 2613 | uioc_t *kioc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2614 | |
| 2615 | adapter = SCP2ADAPTER(scp); |
| 2616 | raid_dev = ADAP2RAIDDEV(adapter); |
| 2617 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2618 | // return failure if adapter is not responding |
| 2619 | if (raid_dev->hw_error) { |
| 2620 | con_log(CL_ANN, (KERN_NOTICE |
| 2621 | "megaraid: hw error, cannot reset\n")); |
| 2622 | return FAILED; |
| 2623 | } |
| 2624 | |
| 2625 | |
| 2626 | // Under exceptional conditions, FW can take up to 3 minutes to |
| 2627 | // complete command processing. Wait for additional 2 minutes for the |
| 2628 | // pending commands counter to go down to 0. If it doesn't, let the |
| 2629 | // controller be marked offline |
| 2630 | // Also, reset all the commands currently owned by the driver |
| 2631 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); |
| 2632 | list_for_each_entry_safe(scb, tmp, &adapter->pend_list, list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2633 | list_del_init(&scb->list); // from pending list |
| 2634 | |
Ju, Seokmann | c005fb4 | 2006-04-27 02:33:06 -0700 | [diff] [blame] | 2635 | if (scb->sno >= MBOX_MAX_SCSI_CMDS) { |
| 2636 | con_log(CL_ANN, (KERN_WARNING |
| 2637 | "megaraid: IOCTL packet with %d[%d:%d] being reset\n", |
| 2638 | scb->sno, scb->dev_channel, scb->dev_target)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2639 | |
Ju, Seokmann | c005fb4 | 2006-04-27 02:33:06 -0700 | [diff] [blame] | 2640 | scb->status = -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2641 | |
Ju, Seokmann | c005fb4 | 2006-04-27 02:33:06 -0700 | [diff] [blame] | 2642 | kioc = (uioc_t *)scb->gp; |
| 2643 | kioc->status = -EFAULT; |
| 2644 | |
| 2645 | megaraid_mbox_mm_done(adapter, scb); |
| 2646 | } else { |
| 2647 | if (scb->scp == scp) { // Found command |
| 2648 | con_log(CL_ANN, (KERN_WARNING |
| 2649 | "megaraid: %ld:%d[%d:%d], reset from pending list\n", |
| 2650 | scp->serial_number, scb->sno, |
| 2651 | scb->dev_channel, scb->dev_target)); |
| 2652 | } else { |
| 2653 | con_log(CL_ANN, (KERN_WARNING |
| 2654 | "megaraid: IO packet with %d[%d:%d] being reset\n", |
| 2655 | scb->sno, scb->dev_channel, scb->dev_target)); |
| 2656 | } |
| 2657 | |
| 2658 | scb->scp->result = (DID_RESET << 16); |
| 2659 | scb->scp->scsi_done(scb->scp); |
| 2660 | |
| 2661 | megaraid_dealloc_scb(adapter, scb); |
| 2662 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2663 | } |
| 2664 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); |
| 2665 | |
| 2666 | if (adapter->outstanding_cmds) { |
| 2667 | con_log(CL_ANN, (KERN_NOTICE |
| 2668 | "megaraid: %d outstanding commands. Max wait %d sec\n", |
Ju, Seokmann | c005fb4 | 2006-04-27 02:33:06 -0700 | [diff] [blame] | 2669 | adapter->outstanding_cmds, |
| 2670 | (MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2671 | } |
| 2672 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2673 | recovery_window = MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT; |
| 2674 | |
| 2675 | recovering = adapter->outstanding_cmds; |
| 2676 | |
Ju, Seokmann | c005fb4 | 2006-04-27 02:33:06 -0700 | [diff] [blame] | 2677 | for (i = 0; i < recovery_window; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2678 | |
| 2679 | megaraid_ack_sequence(adapter); |
| 2680 | |
| 2681 | // print a message once every 5 seconds only |
| 2682 | if (!(i % 5)) { |
| 2683 | con_log(CL_ANN, ( |
| 2684 | "megaraid mbox: Wait for %d commands to complete:%d\n", |
| 2685 | adapter->outstanding_cmds, |
Ju, Seokmann | c005fb4 | 2006-04-27 02:33:06 -0700 | [diff] [blame] | 2686 | (MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT) - i)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2687 | } |
| 2688 | |
| 2689 | // bailout if no recovery happended in reset time |
Ju, Seokmann | c005fb4 | 2006-04-27 02:33:06 -0700 | [diff] [blame] | 2690 | if (adapter->outstanding_cmds == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2691 | break; |
| 2692 | } |
| 2693 | |
| 2694 | msleep(1000); |
| 2695 | } |
| 2696 | |
Christoph Hellwig | f2c8dc4 | 2005-10-31 21:06:02 +0100 | [diff] [blame] | 2697 | spin_lock(&adapter->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2698 | |
| 2699 | // If still outstanding commands, bail out |
| 2700 | if (adapter->outstanding_cmds) { |
| 2701 | con_log(CL_ANN, (KERN_WARNING |
| 2702 | "megaraid mbox: critical hardware error!\n")); |
| 2703 | |
| 2704 | raid_dev->hw_error = 1; |
| 2705 | |
Christoph Hellwig | f2c8dc4 | 2005-10-31 21:06:02 +0100 | [diff] [blame] | 2706 | rval = FAILED; |
| 2707 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2708 | } |
| 2709 | else { |
| 2710 | con_log(CL_ANN, (KERN_NOTICE |
| 2711 | "megaraid mbox: reset sequence completed sucessfully\n")); |
| 2712 | } |
| 2713 | |
| 2714 | |
| 2715 | // If the controller supports clustering, reset reservations |
Christoph Hellwig | f2c8dc4 | 2005-10-31 21:06:02 +0100 | [diff] [blame] | 2716 | if (!adapter->ha) { |
| 2717 | rval = SUCCESS; |
| 2718 | goto out; |
| 2719 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2720 | |
| 2721 | // clear reservations if any |
| 2722 | raw_mbox[0] = CLUSTER_CMD; |
| 2723 | raw_mbox[2] = RESET_RESERVATIONS; |
| 2724 | |
| 2725 | rval = SUCCESS; |
| 2726 | if (mbox_post_sync_cmd_fast(adapter, raw_mbox) == 0) { |
| 2727 | con_log(CL_ANN, |
| 2728 | (KERN_INFO "megaraid: reservation reset\n")); |
| 2729 | } |
| 2730 | else { |
| 2731 | rval = FAILED; |
| 2732 | con_log(CL_ANN, (KERN_WARNING |
| 2733 | "megaraid: reservation reset failed\n")); |
| 2734 | } |
| 2735 | |
Christoph Hellwig | f2c8dc4 | 2005-10-31 21:06:02 +0100 | [diff] [blame] | 2736 | out: |
| 2737 | spin_unlock_irq(&adapter->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2738 | return rval; |
| 2739 | } |
| 2740 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2741 | /* |
| 2742 | * START: internal commands library |
| 2743 | * |
| 2744 | * This section of the driver has the common routine used by the driver and |
| 2745 | * also has all the FW routines |
| 2746 | */ |
| 2747 | |
| 2748 | /** |
| 2749 | * mbox_post_sync_cmd() - blocking command to the mailbox based controllers |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 2750 | * @adapter : controller's soft state |
| 2751 | * @raw_mbox : the mailbox |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2752 | * |
| 2753 | * Issue a scb in synchronous and non-interrupt mode for mailbox based |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 2754 | * controllers. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2755 | */ |
| 2756 | static int |
| 2757 | mbox_post_sync_cmd(adapter_t *adapter, uint8_t raw_mbox[]) |
| 2758 | { |
| 2759 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 2760 | mbox64_t *mbox64; |
| 2761 | mbox_t *mbox; |
| 2762 | uint8_t status; |
| 2763 | int i; |
| 2764 | |
| 2765 | |
| 2766 | mbox64 = raid_dev->mbox64; |
| 2767 | mbox = raid_dev->mbox; |
| 2768 | |
| 2769 | /* |
| 2770 | * Wait until mailbox is free |
| 2771 | */ |
| 2772 | if (megaraid_busywait_mbox(raid_dev) != 0) |
| 2773 | goto blocked_mailbox; |
| 2774 | |
| 2775 | /* |
| 2776 | * Copy mailbox data into host structure |
| 2777 | */ |
| 2778 | memcpy((caddr_t)mbox, (caddr_t)raw_mbox, 16); |
| 2779 | mbox->cmdid = 0xFE; |
| 2780 | mbox->busy = 1; |
| 2781 | mbox->poll = 0; |
| 2782 | mbox->ack = 0; |
| 2783 | mbox->numstatus = 0xFF; |
| 2784 | mbox->status = 0xFF; |
| 2785 | |
| 2786 | wmb(); |
| 2787 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); |
| 2788 | |
| 2789 | // wait for maximum 1 second for status to post. If the status is not |
| 2790 | // available within 1 second, assume FW is initializing and wait |
| 2791 | // for an extended amount of time |
| 2792 | if (mbox->numstatus == 0xFF) { // status not yet available |
Alexey Dobriyan | 53b3531 | 2006-03-24 03:16:13 -0800 | [diff] [blame] | 2793 | udelay(25); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2794 | |
| 2795 | for (i = 0; mbox->numstatus == 0xFF && i < 1000; i++) { |
| 2796 | rmb(); |
| 2797 | msleep(1); |
| 2798 | } |
| 2799 | |
| 2800 | |
| 2801 | if (i == 1000) { |
| 2802 | con_log(CL_ANN, (KERN_NOTICE |
| 2803 | "megaraid mailbox: wait for FW to boot ")); |
| 2804 | |
| 2805 | for (i = 0; (mbox->numstatus == 0xFF) && |
| 2806 | (i < MBOX_RESET_WAIT); i++) { |
| 2807 | rmb(); |
| 2808 | con_log(CL_ANN, ("\b\b\b\b\b[%03d]", |
| 2809 | MBOX_RESET_WAIT - i)); |
| 2810 | msleep(1000); |
| 2811 | } |
| 2812 | |
| 2813 | if (i == MBOX_RESET_WAIT) { |
| 2814 | |
| 2815 | con_log(CL_ANN, ( |
| 2816 | "\nmegaraid mailbox: status not available\n")); |
| 2817 | |
| 2818 | return -1; |
| 2819 | } |
| 2820 | con_log(CL_ANN, ("\b\b\b\b\b[ok] \n")); |
| 2821 | } |
| 2822 | } |
| 2823 | |
| 2824 | // wait for maximum 1 second for poll semaphore |
| 2825 | if (mbox->poll != 0x77) { |
| 2826 | udelay(25); |
| 2827 | |
| 2828 | for (i = 0; (mbox->poll != 0x77) && (i < 1000); i++) { |
| 2829 | rmb(); |
| 2830 | msleep(1); |
| 2831 | } |
| 2832 | |
| 2833 | if (i == 1000) { |
| 2834 | con_log(CL_ANN, (KERN_WARNING |
| 2835 | "megaraid mailbox: could not get poll semaphore\n")); |
| 2836 | return -1; |
| 2837 | } |
| 2838 | } |
| 2839 | |
| 2840 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x2); |
| 2841 | wmb(); |
| 2842 | |
| 2843 | // wait for maximum 1 second for acknowledgement |
| 2844 | if (RDINDOOR(raid_dev) & 0x2) { |
| 2845 | udelay(25); |
| 2846 | |
| 2847 | for (i = 0; (RDINDOOR(raid_dev) & 0x2) && (i < 1000); i++) { |
| 2848 | rmb(); |
| 2849 | msleep(1); |
| 2850 | } |
| 2851 | |
| 2852 | if (i == 1000) { |
| 2853 | con_log(CL_ANN, (KERN_WARNING |
| 2854 | "megaraid mailbox: could not acknowledge\n")); |
| 2855 | return -1; |
| 2856 | } |
| 2857 | } |
| 2858 | mbox->poll = 0; |
| 2859 | mbox->ack = 0x77; |
| 2860 | |
| 2861 | status = mbox->status; |
| 2862 | |
| 2863 | // invalidate the completed command id array. After command |
| 2864 | // completion, firmware would write the valid id. |
| 2865 | mbox->numstatus = 0xFF; |
| 2866 | mbox->status = 0xFF; |
| 2867 | for (i = 0; i < MBOX_MAX_FIRMWARE_STATUS; i++) { |
| 2868 | mbox->completed[i] = 0xFF; |
| 2869 | } |
| 2870 | |
| 2871 | return status; |
| 2872 | |
| 2873 | blocked_mailbox: |
| 2874 | |
| 2875 | con_log(CL_ANN, (KERN_WARNING "megaraid: blocked mailbox\n") ); |
| 2876 | return -1; |
| 2877 | } |
| 2878 | |
| 2879 | |
| 2880 | /** |
| 2881 | * mbox_post_sync_cmd_fast - blocking command to the mailbox based controllers |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 2882 | * @adapter : controller's soft state |
| 2883 | * @raw_mbox : the mailbox |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2884 | * |
| 2885 | * Issue a scb in synchronous and non-interrupt mode for mailbox based |
| 2886 | * controllers. This is a faster version of the synchronous command and |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 2887 | * therefore can be called in interrupt-context as well. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2888 | */ |
| 2889 | static int |
| 2890 | mbox_post_sync_cmd_fast(adapter_t *adapter, uint8_t raw_mbox[]) |
| 2891 | { |
| 2892 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 2893 | mbox_t *mbox; |
| 2894 | long i; |
| 2895 | |
| 2896 | |
| 2897 | mbox = raid_dev->mbox; |
| 2898 | |
| 2899 | // return immediately if the mailbox is busy |
| 2900 | if (mbox->busy) return -1; |
| 2901 | |
| 2902 | // Copy mailbox data into host structure |
| 2903 | memcpy((caddr_t)mbox, (caddr_t)raw_mbox, 14); |
| 2904 | mbox->cmdid = 0xFE; |
| 2905 | mbox->busy = 1; |
| 2906 | mbox->poll = 0; |
| 2907 | mbox->ack = 0; |
| 2908 | mbox->numstatus = 0xFF; |
| 2909 | mbox->status = 0xFF; |
| 2910 | |
| 2911 | wmb(); |
| 2912 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); |
| 2913 | |
Ju, Seokmann | c005fb4 | 2006-04-27 02:33:06 -0700 | [diff] [blame] | 2914 | for (i = 0; i < MBOX_SYNC_WAIT_CNT; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2915 | if (mbox->numstatus != 0xFF) break; |
Ju, Seokmann | ed7e8ef | 2005-11-17 13:17:25 -0500 | [diff] [blame] | 2916 | rmb(); |
Ju, Seokmann | c005fb4 | 2006-04-27 02:33:06 -0700 | [diff] [blame] | 2917 | udelay(MBOX_SYNC_DELAY_200); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2918 | } |
| 2919 | |
Ju, Seokmann | c005fb4 | 2006-04-27 02:33:06 -0700 | [diff] [blame] | 2920 | if (i == MBOX_SYNC_WAIT_CNT) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2921 | // We may need to re-calibrate the counter |
| 2922 | con_log(CL_ANN, (KERN_CRIT |
| 2923 | "megaraid: fast sync command timed out\n")); |
| 2924 | } |
| 2925 | |
| 2926 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x2); |
| 2927 | wmb(); |
| 2928 | |
| 2929 | return mbox->status; |
| 2930 | } |
| 2931 | |
| 2932 | |
| 2933 | /** |
| 2934 | * megaraid_busywait_mbox() - Wait until the controller's mailbox is available |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 2935 | * @raid_dev : RAID device (HBA) soft state |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2936 | * |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 2937 | * Wait until the controller's mailbox is available to accept more commands. |
| 2938 | * Wait for at most 1 second. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2939 | */ |
| 2940 | static int |
| 2941 | megaraid_busywait_mbox(mraid_device_t *raid_dev) |
| 2942 | { |
| 2943 | mbox_t *mbox = raid_dev->mbox; |
| 2944 | int i = 0; |
| 2945 | |
| 2946 | if (mbox->busy) { |
| 2947 | udelay(25); |
| 2948 | for (i = 0; mbox->busy && i < 1000; i++) |
| 2949 | msleep(1); |
| 2950 | } |
| 2951 | |
| 2952 | if (i < 1000) return 0; |
| 2953 | else return -1; |
| 2954 | } |
| 2955 | |
| 2956 | |
| 2957 | /** |
| 2958 | * megaraid_mbox_product_info - some static information about the controller |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 2959 | * @adapter : our soft state |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2960 | * |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 2961 | * Issue commands to the controller to grab some parameters required by our |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2962 | * caller. |
| 2963 | */ |
| 2964 | static int |
| 2965 | megaraid_mbox_product_info(adapter_t *adapter) |
| 2966 | { |
| 2967 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 2968 | mbox_t *mbox; |
| 2969 | uint8_t raw_mbox[sizeof(mbox_t)]; |
| 2970 | mraid_pinfo_t *pinfo; |
| 2971 | dma_addr_t pinfo_dma_h; |
| 2972 | mraid_inquiry3_t *mraid_inq3; |
| 2973 | int i; |
| 2974 | |
| 2975 | |
| 2976 | memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); |
| 2977 | mbox = (mbox_t *)raw_mbox; |
| 2978 | |
| 2979 | /* |
| 2980 | * Issue an ENQUIRY3 command to find out certain adapter parameters, |
| 2981 | * e.g., max channels, max commands etc. |
| 2982 | */ |
| 2983 | pinfo = pci_alloc_consistent(adapter->pdev, sizeof(mraid_pinfo_t), |
| 2984 | &pinfo_dma_h); |
| 2985 | |
| 2986 | if (pinfo == NULL) { |
| 2987 | con_log(CL_ANN, (KERN_WARNING |
| 2988 | "megaraid: out of memory, %s %d\n", __FUNCTION__, |
| 2989 | __LINE__)); |
| 2990 | |
| 2991 | return -1; |
| 2992 | } |
| 2993 | memset(pinfo, 0, sizeof(mraid_pinfo_t)); |
| 2994 | |
| 2995 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; |
| 2996 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); |
| 2997 | |
| 2998 | raw_mbox[0] = FC_NEW_CONFIG; |
| 2999 | raw_mbox[2] = NC_SUBOP_ENQUIRY3; |
| 3000 | raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; |
| 3001 | |
| 3002 | // Issue the command |
| 3003 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { |
| 3004 | |
| 3005 | con_log(CL_ANN, (KERN_WARNING "megaraid: Inquiry3 failed\n")); |
| 3006 | |
| 3007 | pci_free_consistent(adapter->pdev, sizeof(mraid_pinfo_t), |
| 3008 | pinfo, pinfo_dma_h); |
| 3009 | |
| 3010 | return -1; |
| 3011 | } |
| 3012 | |
| 3013 | /* |
| 3014 | * Collect information about state of each physical drive |
| 3015 | * attached to the controller. We will expose all the disks |
| 3016 | * which are not part of RAID |
| 3017 | */ |
| 3018 | mraid_inq3 = (mraid_inquiry3_t *)adapter->ibuf; |
| 3019 | for (i = 0; i < MBOX_MAX_PHYSICAL_DRIVES; i++) { |
| 3020 | raid_dev->pdrv_state[i] = mraid_inq3->pdrv_state[i]; |
| 3021 | } |
| 3022 | |
| 3023 | /* |
| 3024 | * Get product info for information like number of channels, |
| 3025 | * maximum commands supported. |
| 3026 | */ |
| 3027 | memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); |
| 3028 | mbox->xferaddr = (uint32_t)pinfo_dma_h; |
| 3029 | |
| 3030 | raw_mbox[0] = FC_NEW_CONFIG; |
| 3031 | raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; |
| 3032 | |
| 3033 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { |
| 3034 | |
| 3035 | con_log(CL_ANN, (KERN_WARNING |
| 3036 | "megaraid: product info failed\n")); |
| 3037 | |
| 3038 | pci_free_consistent(adapter->pdev, sizeof(mraid_pinfo_t), |
| 3039 | pinfo, pinfo_dma_h); |
| 3040 | |
| 3041 | return -1; |
| 3042 | } |
| 3043 | |
| 3044 | /* |
| 3045 | * Setup some parameters for host, as required by our caller |
| 3046 | */ |
| 3047 | adapter->max_channel = pinfo->nchannels; |
| 3048 | |
| 3049 | /* |
| 3050 | * we will export all the logical drives on a single channel. |
| 3051 | * Add 1 since inquires do not come for inititor ID |
| 3052 | */ |
| 3053 | adapter->max_target = MAX_LOGICAL_DRIVES_40LD + 1; |
| 3054 | adapter->max_lun = 8; // up to 8 LUNs for non-disk devices |
| 3055 | |
| 3056 | /* |
| 3057 | * These are the maximum outstanding commands for the scsi-layer |
| 3058 | */ |
| 3059 | adapter->max_cmds = MBOX_MAX_SCSI_CMDS; |
| 3060 | |
| 3061 | memset(adapter->fw_version, 0, VERSION_SIZE); |
| 3062 | memset(adapter->bios_version, 0, VERSION_SIZE); |
| 3063 | |
| 3064 | memcpy(adapter->fw_version, pinfo->fw_version, 4); |
| 3065 | adapter->fw_version[4] = 0; |
| 3066 | |
| 3067 | memcpy(adapter->bios_version, pinfo->bios_version, 4); |
| 3068 | adapter->bios_version[4] = 0; |
| 3069 | |
| 3070 | con_log(CL_ANN, (KERN_NOTICE |
| 3071 | "megaraid: fw version:[%s] bios version:[%s]\n", |
| 3072 | adapter->fw_version, adapter->bios_version)); |
| 3073 | |
| 3074 | pci_free_consistent(adapter->pdev, sizeof(mraid_pinfo_t), pinfo, |
| 3075 | pinfo_dma_h); |
| 3076 | |
| 3077 | return 0; |
| 3078 | } |
| 3079 | |
| 3080 | |
| 3081 | |
| 3082 | /** |
| 3083 | * megaraid_mbox_extended_cdb - check for support for extended CDBs |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 3084 | * @adapter : soft state for the controller |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3085 | * |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 3086 | * This routine check whether the controller in question supports extended |
| 3087 | * ( > 10 bytes ) CDBs. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3088 | */ |
| 3089 | static int |
| 3090 | megaraid_mbox_extended_cdb(adapter_t *adapter) |
| 3091 | { |
| 3092 | mbox_t *mbox; |
| 3093 | uint8_t raw_mbox[sizeof(mbox_t)]; |
| 3094 | int rval; |
| 3095 | |
| 3096 | mbox = (mbox_t *)raw_mbox; |
| 3097 | |
| 3098 | memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); |
| 3099 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; |
| 3100 | |
| 3101 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); |
| 3102 | |
| 3103 | raw_mbox[0] = MAIN_MISC_OPCODE; |
| 3104 | raw_mbox[2] = SUPPORT_EXT_CDB; |
| 3105 | |
| 3106 | /* |
| 3107 | * Issue the command |
| 3108 | */ |
| 3109 | rval = 0; |
| 3110 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { |
| 3111 | rval = -1; |
| 3112 | } |
| 3113 | |
| 3114 | return rval; |
| 3115 | } |
| 3116 | |
| 3117 | |
| 3118 | /** |
| 3119 | * megaraid_mbox_support_ha - Do we support clustering |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 3120 | * @adapter : soft state for the controller |
| 3121 | * @init_id : ID of the initiator |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3122 | * |
| 3123 | * Determine if the firmware supports clustering and the ID of the initiator. |
| 3124 | */ |
| 3125 | static int |
| 3126 | megaraid_mbox_support_ha(adapter_t *adapter, uint16_t *init_id) |
| 3127 | { |
| 3128 | mbox_t *mbox; |
| 3129 | uint8_t raw_mbox[sizeof(mbox_t)]; |
| 3130 | int rval; |
| 3131 | |
| 3132 | |
| 3133 | mbox = (mbox_t *)raw_mbox; |
| 3134 | |
| 3135 | memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); |
| 3136 | |
| 3137 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; |
| 3138 | |
| 3139 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); |
| 3140 | |
| 3141 | raw_mbox[0] = GET_TARGET_ID; |
| 3142 | |
| 3143 | // Issue the command |
| 3144 | *init_id = 7; |
| 3145 | rval = -1; |
| 3146 | if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { |
| 3147 | |
| 3148 | *init_id = *(uint8_t *)adapter->ibuf; |
| 3149 | |
| 3150 | con_log(CL_ANN, (KERN_INFO |
| 3151 | "megaraid: cluster firmware, initiator ID: %d\n", |
| 3152 | *init_id)); |
| 3153 | |
| 3154 | rval = 0; |
| 3155 | } |
| 3156 | |
| 3157 | return rval; |
| 3158 | } |
| 3159 | |
| 3160 | |
| 3161 | /** |
| 3162 | * megaraid_mbox_support_random_del - Do we support random deletion |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 3163 | * @adapter : soft state for the controller |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3164 | * |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 3165 | * Determine if the firmware supports random deletion. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3166 | * Return: 1 is operation supported, 0 otherwise |
| 3167 | */ |
| 3168 | static int |
| 3169 | megaraid_mbox_support_random_del(adapter_t *adapter) |
| 3170 | { |
| 3171 | mbox_t *mbox; |
| 3172 | uint8_t raw_mbox[sizeof(mbox_t)]; |
| 3173 | int rval; |
| 3174 | |
| 3175 | |
| 3176 | mbox = (mbox_t *)raw_mbox; |
| 3177 | |
| 3178 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); |
| 3179 | |
| 3180 | raw_mbox[0] = FC_DEL_LOGDRV; |
| 3181 | raw_mbox[2] = OP_SUP_DEL_LOGDRV; |
| 3182 | |
| 3183 | // Issue the command |
| 3184 | rval = 0; |
| 3185 | if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { |
| 3186 | |
| 3187 | con_log(CL_DLEVEL1, ("megaraid: supports random deletion\n")); |
| 3188 | |
| 3189 | rval = 1; |
| 3190 | } |
| 3191 | |
| 3192 | return rval; |
| 3193 | } |
| 3194 | |
| 3195 | |
| 3196 | /** |
| 3197 | * megaraid_mbox_get_max_sg - maximum sg elements supported by the firmware |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 3198 | * @adapter : soft state for the controller |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3199 | * |
| 3200 | * Find out the maximum number of scatter-gather elements supported by the |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 3201 | * firmware. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3202 | */ |
| 3203 | static int |
| 3204 | megaraid_mbox_get_max_sg(adapter_t *adapter) |
| 3205 | { |
| 3206 | mbox_t *mbox; |
| 3207 | uint8_t raw_mbox[sizeof(mbox_t)]; |
| 3208 | int nsg; |
| 3209 | |
| 3210 | |
| 3211 | mbox = (mbox_t *)raw_mbox; |
| 3212 | |
| 3213 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); |
| 3214 | |
| 3215 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; |
| 3216 | |
| 3217 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); |
| 3218 | |
| 3219 | raw_mbox[0] = MAIN_MISC_OPCODE; |
| 3220 | raw_mbox[2] = GET_MAX_SG_SUPPORT; |
| 3221 | |
| 3222 | // Issue the command |
| 3223 | if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { |
| 3224 | nsg = *(uint8_t *)adapter->ibuf; |
| 3225 | } |
| 3226 | else { |
| 3227 | nsg = MBOX_DEFAULT_SG_SIZE; |
| 3228 | } |
| 3229 | |
| 3230 | if (nsg > MBOX_MAX_SG_SIZE) nsg = MBOX_MAX_SG_SIZE; |
| 3231 | |
| 3232 | return nsg; |
| 3233 | } |
| 3234 | |
| 3235 | |
| 3236 | /** |
| 3237 | * megaraid_mbox_enum_raid_scsi - enumerate the RAID and SCSI channels |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 3238 | * @adapter : soft state for the controller |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3239 | * |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 3240 | * Enumerate the RAID and SCSI channels for ROMB platforms so that channels |
| 3241 | * can be exported as regular SCSI channels. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3242 | */ |
| 3243 | static void |
| 3244 | megaraid_mbox_enum_raid_scsi(adapter_t *adapter) |
| 3245 | { |
| 3246 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 3247 | mbox_t *mbox; |
| 3248 | uint8_t raw_mbox[sizeof(mbox_t)]; |
| 3249 | |
| 3250 | |
| 3251 | mbox = (mbox_t *)raw_mbox; |
| 3252 | |
| 3253 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); |
| 3254 | |
| 3255 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; |
| 3256 | |
| 3257 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); |
| 3258 | |
| 3259 | raw_mbox[0] = CHNL_CLASS; |
| 3260 | raw_mbox[2] = GET_CHNL_CLASS; |
| 3261 | |
| 3262 | // Issue the command. If the command fails, all channels are RAID |
| 3263 | // channels |
| 3264 | raid_dev->channel_class = 0xFF; |
| 3265 | if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { |
| 3266 | raid_dev->channel_class = *(uint8_t *)adapter->ibuf; |
| 3267 | } |
| 3268 | |
| 3269 | return; |
| 3270 | } |
| 3271 | |
| 3272 | |
| 3273 | /** |
| 3274 | * megaraid_mbox_flush_cache - flush adapter and disks cache |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 3275 | * @adapter : soft state for the controller |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3276 | * |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 3277 | * Flush adapter cache followed by disks cache. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3278 | */ |
| 3279 | static void |
| 3280 | megaraid_mbox_flush_cache(adapter_t *adapter) |
| 3281 | { |
| 3282 | mbox_t *mbox; |
| 3283 | uint8_t raw_mbox[sizeof(mbox_t)]; |
| 3284 | |
| 3285 | |
| 3286 | mbox = (mbox_t *)raw_mbox; |
| 3287 | |
| 3288 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); |
| 3289 | |
| 3290 | raw_mbox[0] = FLUSH_ADAPTER; |
| 3291 | |
| 3292 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { |
| 3293 | con_log(CL_ANN, ("megaraid: flush adapter failed\n")); |
| 3294 | } |
| 3295 | |
| 3296 | raw_mbox[0] = FLUSH_SYSTEM; |
| 3297 | |
| 3298 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { |
| 3299 | con_log(CL_ANN, ("megaraid: flush disks cache failed\n")); |
| 3300 | } |
| 3301 | |
| 3302 | return; |
| 3303 | } |
| 3304 | |
| 3305 | |
| 3306 | /** |
Sumant Patro | cd96d96 | 2007-01-05 07:10:09 -0800 | [diff] [blame] | 3307 | * megaraid_mbox_fire_sync_cmd - fire the sync cmd |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 3308 | * @adapter : soft state for the controller |
Sumant Patro | cd96d96 | 2007-01-05 07:10:09 -0800 | [diff] [blame] | 3309 | * |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 3310 | * Clears the pending cmds in FW and reinits its RAID structs. |
Sumant Patro | cd96d96 | 2007-01-05 07:10:09 -0800 | [diff] [blame] | 3311 | */ |
| 3312 | static int |
| 3313 | megaraid_mbox_fire_sync_cmd(adapter_t *adapter) |
| 3314 | { |
| 3315 | mbox_t *mbox; |
| 3316 | uint8_t raw_mbox[sizeof(mbox_t)]; |
| 3317 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 3318 | mbox64_t *mbox64; |
| 3319 | int status = 0; |
| 3320 | int i; |
| 3321 | uint32_t dword; |
| 3322 | |
| 3323 | mbox = (mbox_t *)raw_mbox; |
| 3324 | |
| 3325 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); |
| 3326 | |
| 3327 | raw_mbox[0] = 0xFF; |
| 3328 | |
| 3329 | mbox64 = raid_dev->mbox64; |
| 3330 | mbox = raid_dev->mbox; |
| 3331 | |
| 3332 | /* Wait until mailbox is free */ |
| 3333 | if (megaraid_busywait_mbox(raid_dev) != 0) { |
| 3334 | status = 1; |
| 3335 | goto blocked_mailbox; |
| 3336 | } |
| 3337 | |
| 3338 | /* Copy mailbox data into host structure */ |
| 3339 | memcpy((caddr_t)mbox, (caddr_t)raw_mbox, 16); |
| 3340 | mbox->cmdid = 0xFE; |
| 3341 | mbox->busy = 1; |
| 3342 | mbox->poll = 0; |
| 3343 | mbox->ack = 0; |
| 3344 | mbox->numstatus = 0; |
| 3345 | mbox->status = 0; |
| 3346 | |
| 3347 | wmb(); |
| 3348 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); |
| 3349 | |
| 3350 | /* Wait for maximum 1 min for status to post. |
| 3351 | * If the Firmware SUPPORTS the ABOVE COMMAND, |
| 3352 | * mbox->cmd will be set to 0 |
| 3353 | * else |
| 3354 | * the firmware will reject the command with |
| 3355 | * mbox->numstatus set to 1 |
| 3356 | */ |
| 3357 | |
| 3358 | i = 0; |
| 3359 | status = 0; |
| 3360 | while (!mbox->numstatus && mbox->cmd == 0xFF) { |
| 3361 | rmb(); |
| 3362 | msleep(1); |
| 3363 | i++; |
| 3364 | if (i > 1000 * 60) { |
| 3365 | status = 1; |
| 3366 | break; |
| 3367 | } |
| 3368 | } |
| 3369 | if (mbox->numstatus == 1) |
| 3370 | status = 1; /*cmd not supported*/ |
| 3371 | |
| 3372 | /* Check for interrupt line */ |
| 3373 | dword = RDOUTDOOR(raid_dev); |
| 3374 | WROUTDOOR(raid_dev, dword); |
| 3375 | WRINDOOR(raid_dev,2); |
| 3376 | |
| 3377 | return status; |
| 3378 | |
| 3379 | blocked_mailbox: |
| 3380 | con_log(CL_ANN, (KERN_WARNING "megaraid: blocked mailbox\n")); |
| 3381 | return status; |
| 3382 | } |
| 3383 | |
| 3384 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3385 | * megaraid_mbox_display_scb - display SCB information, mostly debug purposes |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 3386 | * @adapter : controller's soft state |
| 3387 | * @scb : SCB to be displayed |
| 3388 | * @level : debug level for console print |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3389 | * |
| 3390 | * Diplay information about the given SCB iff the current debug level is |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 3391 | * verbose. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3392 | */ |
| 3393 | static void |
| 3394 | megaraid_mbox_display_scb(adapter_t *adapter, scb_t *scb) |
| 3395 | { |
| 3396 | mbox_ccb_t *ccb; |
| 3397 | struct scsi_cmnd *scp; |
| 3398 | mbox_t *mbox; |
| 3399 | int level; |
| 3400 | int i; |
| 3401 | |
| 3402 | |
| 3403 | ccb = (mbox_ccb_t *)scb->ccb; |
| 3404 | scp = scb->scp; |
| 3405 | mbox = ccb->mbox; |
| 3406 | |
| 3407 | level = CL_DLEVEL3; |
| 3408 | |
| 3409 | con_log(level, (KERN_NOTICE |
| 3410 | "megaraid mailbox: status:%#x cmd:%#x id:%#x ", scb->status, |
| 3411 | mbox->cmd, scb->sno)); |
| 3412 | |
| 3413 | con_log(level, ("sec:%#x lba:%#x addr:%#x ld:%d sg:%d\n", |
| 3414 | mbox->numsectors, mbox->lba, mbox->xferaddr, mbox->logdrv, |
| 3415 | mbox->numsge)); |
| 3416 | |
| 3417 | if (!scp) return; |
| 3418 | |
| 3419 | con_log(level, (KERN_NOTICE "scsi cmnd: ")); |
| 3420 | |
| 3421 | for (i = 0; i < scp->cmd_len; i++) { |
| 3422 | con_log(level, ("%#2.02x ", scp->cmnd[i])); |
| 3423 | } |
| 3424 | |
| 3425 | con_log(level, ("\n")); |
| 3426 | |
| 3427 | return; |
| 3428 | } |
| 3429 | |
| 3430 | |
| 3431 | /** |
| 3432 | * megaraid_mbox_setup_device_map - manage device ids |
| 3433 | * @adapter : Driver's soft state |
| 3434 | * |
| 3435 | * Manange the device ids to have an appropraite mapping between the kernel |
| 3436 | * scsi addresses and megaraid scsi and logical drive addresses. We export |
| 3437 | * scsi devices on their actual addresses, whereas the logical drives are |
| 3438 | * exported on a virtual scsi channel. |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 3439 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3440 | static void |
| 3441 | megaraid_mbox_setup_device_map(adapter_t *adapter) |
| 3442 | { |
| 3443 | uint8_t c; |
| 3444 | uint8_t t; |
| 3445 | |
| 3446 | /* |
| 3447 | * First fill the values on the logical drive channel |
| 3448 | */ |
| 3449 | for (t = 0; t < LSI_MAX_LOGICAL_DRIVES_64LD; t++) |
| 3450 | adapter->device_ids[adapter->max_channel][t] = |
| 3451 | (t < adapter->init_id) ? t : t - 1; |
| 3452 | |
| 3453 | adapter->device_ids[adapter->max_channel][adapter->init_id] = 0xFF; |
| 3454 | |
| 3455 | /* |
| 3456 | * Fill the values on the physical devices channels |
| 3457 | */ |
| 3458 | for (c = 0; c < adapter->max_channel; c++) |
| 3459 | for (t = 0; t < LSI_MAX_LOGICAL_DRIVES_64LD; t++) |
| 3460 | adapter->device_ids[c][t] = (c << 8) | t; |
| 3461 | } |
| 3462 | |
| 3463 | |
| 3464 | /* |
| 3465 | * END: internal commands library |
| 3466 | */ |
| 3467 | |
| 3468 | /* |
| 3469 | * START: Interface for the common management module |
| 3470 | * |
| 3471 | * This is the module, which interfaces with the common mangement module to |
| 3472 | * provide support for ioctl and sysfs |
| 3473 | */ |
| 3474 | |
| 3475 | /** |
| 3476 | * megaraid_cmm_register - register with the mangement module |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 3477 | * @adapter : HBA soft state |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3478 | * |
| 3479 | * Register with the management module, which allows applications to issue |
| 3480 | * ioctl calls to the drivers. This interface is used by the management module |
| 3481 | * to setup sysfs support as well. |
| 3482 | */ |
| 3483 | static int |
| 3484 | megaraid_cmm_register(adapter_t *adapter) |
| 3485 | { |
| 3486 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 3487 | mraid_mmadp_t adp; |
| 3488 | scb_t *scb; |
| 3489 | mbox_ccb_t *ccb; |
| 3490 | int rval; |
| 3491 | int i; |
| 3492 | |
| 3493 | // Allocate memory for the base list of scb for management module. |
Yoann Padioleau | dd00cc4 | 2007-07-19 01:49:03 -0700 | [diff] [blame^] | 3494 | adapter->uscb_list = kcalloc(MBOX_MAX_USER_CMDS, sizeof(scb_t), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3495 | |
| 3496 | if (adapter->uscb_list == NULL) { |
| 3497 | con_log(CL_ANN, (KERN_WARNING |
| 3498 | "megaraid: out of memory, %s %d\n", __FUNCTION__, |
| 3499 | __LINE__)); |
| 3500 | return -1; |
| 3501 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3502 | |
| 3503 | |
| 3504 | // Initialize the synchronization parameters for resources for |
| 3505 | // commands for management module |
| 3506 | INIT_LIST_HEAD(&adapter->uscb_pool); |
| 3507 | |
| 3508 | spin_lock_init(USER_FREE_LIST_LOCK(adapter)); |
| 3509 | |
| 3510 | |
| 3511 | |
| 3512 | // link all the packets. Note, CCB for commands, coming from the |
| 3513 | // commom management module, mailbox physical address are already |
| 3514 | // setup by it. We just need placeholder for that in our local command |
| 3515 | // control blocks |
| 3516 | for (i = 0; i < MBOX_MAX_USER_CMDS; i++) { |
| 3517 | |
| 3518 | scb = adapter->uscb_list + i; |
| 3519 | ccb = raid_dev->uccb_list + i; |
| 3520 | |
| 3521 | scb->ccb = (caddr_t)ccb; |
| 3522 | ccb->mbox64 = raid_dev->umbox64 + i; |
| 3523 | ccb->mbox = &ccb->mbox64->mbox32; |
| 3524 | ccb->raw_mbox = (uint8_t *)ccb->mbox; |
| 3525 | |
| 3526 | scb->gp = 0; |
| 3527 | |
| 3528 | // COMMAND ID 0 - (MBOX_MAX_SCSI_CMDS-1) ARE RESERVED FOR |
| 3529 | // COMMANDS COMING FROM IO SUBSYSTEM (MID-LAYER) |
| 3530 | scb->sno = i + MBOX_MAX_SCSI_CMDS; |
| 3531 | |
| 3532 | scb->scp = NULL; |
| 3533 | scb->state = SCB_FREE; |
| 3534 | scb->dma_direction = PCI_DMA_NONE; |
| 3535 | scb->dma_type = MRAID_DMA_NONE; |
| 3536 | scb->dev_channel = -1; |
| 3537 | scb->dev_target = -1; |
| 3538 | |
| 3539 | // put scb in the free pool |
| 3540 | list_add_tail(&scb->list, &adapter->uscb_pool); |
| 3541 | } |
| 3542 | |
| 3543 | adp.unique_id = adapter->unique_id; |
| 3544 | adp.drvr_type = DRVRTYPE_MBOX; |
| 3545 | adp.drvr_data = (unsigned long)adapter; |
| 3546 | adp.pdev = adapter->pdev; |
| 3547 | adp.issue_uioc = megaraid_mbox_mm_handler; |
Ju, Seokmann | c005fb4 | 2006-04-27 02:33:06 -0700 | [diff] [blame] | 3548 | adp.timeout = MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3549 | adp.max_kioc = MBOX_MAX_USER_CMDS; |
| 3550 | |
| 3551 | if ((rval = mraid_mm_register_adp(&adp)) != 0) { |
| 3552 | |
| 3553 | con_log(CL_ANN, (KERN_WARNING |
| 3554 | "megaraid mbox: did not register with CMM\n")); |
| 3555 | |
| 3556 | kfree(adapter->uscb_list); |
| 3557 | } |
| 3558 | |
| 3559 | return rval; |
| 3560 | } |
| 3561 | |
| 3562 | |
| 3563 | /** |
| 3564 | * megaraid_cmm_unregister - un-register with the mangement module |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 3565 | * @adapter : HBA soft state |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3566 | * |
| 3567 | * Un-register with the management module. |
| 3568 | * FIXME: mgmt module must return failure for unregister if it has pending |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 3569 | * commands in LLD. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3570 | */ |
| 3571 | static int |
| 3572 | megaraid_cmm_unregister(adapter_t *adapter) |
| 3573 | { |
| 3574 | kfree(adapter->uscb_list); |
| 3575 | mraid_mm_unregister_adp(adapter->unique_id); |
| 3576 | return 0; |
| 3577 | } |
| 3578 | |
| 3579 | |
| 3580 | /** |
| 3581 | * megaraid_mbox_mm_handler - interface for CMM to issue commands to LLD |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 3582 | * @drvr_data : LLD specific data |
| 3583 | * @kioc : CMM interface packet |
| 3584 | * @action : command action |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3585 | * |
| 3586 | * This routine is invoked whenever the Common Mangement Module (CMM) has a |
| 3587 | * command for us. The 'action' parameter specifies if this is a new command |
| 3588 | * or otherwise. |
| 3589 | */ |
| 3590 | static int |
| 3591 | megaraid_mbox_mm_handler(unsigned long drvr_data, uioc_t *kioc, uint32_t action) |
| 3592 | { |
| 3593 | adapter_t *adapter; |
| 3594 | |
| 3595 | if (action != IOCTL_ISSUE) { |
| 3596 | con_log(CL_ANN, (KERN_WARNING |
| 3597 | "megaraid: unsupported management action:%#2x\n", |
| 3598 | action)); |
| 3599 | return (-ENOTSUPP); |
| 3600 | } |
| 3601 | |
| 3602 | adapter = (adapter_t *)drvr_data; |
| 3603 | |
| 3604 | // make sure this adapter is not being detached right now. |
| 3605 | if (atomic_read(&adapter->being_detached)) { |
| 3606 | con_log(CL_ANN, (KERN_WARNING |
| 3607 | "megaraid: reject management request, detaching\n")); |
| 3608 | return (-ENODEV); |
| 3609 | } |
| 3610 | |
| 3611 | switch (kioc->opcode) { |
| 3612 | |
| 3613 | case GET_ADAP_INFO: |
| 3614 | |
| 3615 | kioc->status = gather_hbainfo(adapter, (mraid_hba_info_t *) |
| 3616 | (unsigned long)kioc->buf_vaddr); |
| 3617 | |
| 3618 | kioc->done(kioc); |
| 3619 | |
| 3620 | return kioc->status; |
| 3621 | |
| 3622 | case MBOX_CMD: |
| 3623 | |
| 3624 | return megaraid_mbox_mm_command(adapter, kioc); |
| 3625 | |
| 3626 | default: |
| 3627 | kioc->status = (-EINVAL); |
| 3628 | kioc->done(kioc); |
| 3629 | return (-EINVAL); |
| 3630 | } |
| 3631 | |
| 3632 | return 0; // not reached |
| 3633 | } |
| 3634 | |
| 3635 | /** |
| 3636 | * megaraid_mbox_mm_command - issues commands routed through CMM |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 3637 | * @adapter : HBA soft state |
| 3638 | * @kioc : management command packet |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3639 | * |
| 3640 | * Issues commands, which are routed through the management module. |
| 3641 | */ |
| 3642 | static int |
| 3643 | megaraid_mbox_mm_command(adapter_t *adapter, uioc_t *kioc) |
| 3644 | { |
| 3645 | struct list_head *head = &adapter->uscb_pool; |
| 3646 | mbox64_t *mbox64; |
| 3647 | uint8_t *raw_mbox; |
| 3648 | scb_t *scb; |
| 3649 | mbox_ccb_t *ccb; |
| 3650 | unsigned long flags; |
| 3651 | |
| 3652 | // detach one scb from free pool |
| 3653 | spin_lock_irqsave(USER_FREE_LIST_LOCK(adapter), flags); |
| 3654 | |
| 3655 | if (list_empty(head)) { // should never happen because of CMM |
| 3656 | |
| 3657 | con_log(CL_ANN, (KERN_WARNING |
| 3658 | "megaraid mbox: bug in cmm handler, lost resources\n")); |
| 3659 | |
| 3660 | spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags); |
| 3661 | |
| 3662 | return (-EINVAL); |
| 3663 | } |
| 3664 | |
| 3665 | scb = list_entry(head->next, scb_t, list); |
| 3666 | list_del_init(&scb->list); |
| 3667 | |
| 3668 | spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags); |
| 3669 | |
| 3670 | scb->state = SCB_ACTIVE; |
| 3671 | scb->dma_type = MRAID_DMA_NONE; |
| 3672 | scb->dma_direction = PCI_DMA_NONE; |
| 3673 | |
| 3674 | ccb = (mbox_ccb_t *)scb->ccb; |
| 3675 | mbox64 = (mbox64_t *)(unsigned long)kioc->cmdbuf; |
| 3676 | raw_mbox = (uint8_t *)&mbox64->mbox32; |
| 3677 | |
| 3678 | memcpy(ccb->mbox64, mbox64, sizeof(mbox64_t)); |
| 3679 | |
| 3680 | scb->gp = (unsigned long)kioc; |
| 3681 | |
| 3682 | /* |
| 3683 | * If it is a logdrv random delete operation, we have to wait till |
| 3684 | * there are no outstanding cmds at the fw and then issue it directly |
| 3685 | */ |
| 3686 | if (raw_mbox[0] == FC_DEL_LOGDRV && raw_mbox[2] == OP_DEL_LOGDRV) { |
| 3687 | |
| 3688 | if (wait_till_fw_empty(adapter)) { |
| 3689 | con_log(CL_ANN, (KERN_NOTICE |
| 3690 | "megaraid mbox: LD delete, timed out\n")); |
| 3691 | |
| 3692 | kioc->status = -ETIME; |
| 3693 | |
| 3694 | scb->status = -1; |
| 3695 | |
| 3696 | megaraid_mbox_mm_done(adapter, scb); |
| 3697 | |
| 3698 | return (-ETIME); |
| 3699 | } |
| 3700 | |
| 3701 | INIT_LIST_HEAD(&scb->list); |
| 3702 | |
| 3703 | scb->state = SCB_ISSUED; |
| 3704 | if (mbox_post_cmd(adapter, scb) != 0) { |
| 3705 | |
| 3706 | con_log(CL_ANN, (KERN_NOTICE |
| 3707 | "megaraid mbox: LD delete, mailbox busy\n")); |
| 3708 | |
| 3709 | kioc->status = -EBUSY; |
| 3710 | |
| 3711 | scb->status = -1; |
| 3712 | |
| 3713 | megaraid_mbox_mm_done(adapter, scb); |
| 3714 | |
| 3715 | return (-EBUSY); |
| 3716 | } |
| 3717 | |
| 3718 | return 0; |
| 3719 | } |
| 3720 | |
| 3721 | // put the command on the pending list and execute |
| 3722 | megaraid_mbox_runpendq(adapter, scb); |
| 3723 | |
| 3724 | return 0; |
| 3725 | } |
| 3726 | |
| 3727 | |
| 3728 | static int |
| 3729 | wait_till_fw_empty(adapter_t *adapter) |
| 3730 | { |
| 3731 | unsigned long flags = 0; |
| 3732 | int i; |
| 3733 | |
| 3734 | |
| 3735 | /* |
| 3736 | * Set the quiescent flag to stop issuing cmds to FW. |
| 3737 | */ |
Christoph Hellwig | f2c8dc4 | 2005-10-31 21:06:02 +0100 | [diff] [blame] | 3738 | spin_lock_irqsave(&adapter->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3739 | adapter->quiescent++; |
Christoph Hellwig | f2c8dc4 | 2005-10-31 21:06:02 +0100 | [diff] [blame] | 3740 | spin_unlock_irqrestore(&adapter->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3741 | |
| 3742 | /* |
| 3743 | * Wait till there are no more cmds outstanding at FW. Try for at most |
| 3744 | * 60 seconds |
| 3745 | */ |
| 3746 | for (i = 0; i < 60 && adapter->outstanding_cmds; i++) { |
| 3747 | con_log(CL_DLEVEL1, (KERN_INFO |
| 3748 | "megaraid: FW has %d pending commands\n", |
| 3749 | adapter->outstanding_cmds)); |
| 3750 | |
| 3751 | msleep(1000); |
| 3752 | } |
| 3753 | |
| 3754 | return adapter->outstanding_cmds; |
| 3755 | } |
| 3756 | |
| 3757 | |
| 3758 | /** |
| 3759 | * megaraid_mbox_mm_done - callback for CMM commands |
| 3760 | * @adapter : HBA soft state |
| 3761 | * @scb : completed command |
| 3762 | * |
| 3763 | * Callback routine for internal commands originated from the management |
| 3764 | * module. |
| 3765 | */ |
| 3766 | static void |
| 3767 | megaraid_mbox_mm_done(adapter_t *adapter, scb_t *scb) |
| 3768 | { |
| 3769 | uioc_t *kioc; |
| 3770 | mbox64_t *mbox64; |
| 3771 | uint8_t *raw_mbox; |
| 3772 | unsigned long flags; |
| 3773 | |
| 3774 | kioc = (uioc_t *)scb->gp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3775 | mbox64 = (mbox64_t *)(unsigned long)kioc->cmdbuf; |
| 3776 | mbox64->mbox32.status = scb->status; |
| 3777 | raw_mbox = (uint8_t *)&mbox64->mbox32; |
| 3778 | |
| 3779 | |
| 3780 | // put scb in the free pool |
| 3781 | scb->state = SCB_FREE; |
| 3782 | scb->scp = NULL; |
| 3783 | |
| 3784 | spin_lock_irqsave(USER_FREE_LIST_LOCK(adapter), flags); |
| 3785 | |
| 3786 | list_add(&scb->list, &adapter->uscb_pool); |
| 3787 | |
| 3788 | spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags); |
| 3789 | |
| 3790 | // if a delete logical drive operation succeeded, restart the |
| 3791 | // controller |
| 3792 | if (raw_mbox[0] == FC_DEL_LOGDRV && raw_mbox[2] == OP_DEL_LOGDRV) { |
| 3793 | |
| 3794 | adapter->quiescent--; |
| 3795 | |
| 3796 | megaraid_mbox_runpendq(adapter, NULL); |
| 3797 | } |
| 3798 | |
| 3799 | kioc->done(kioc); |
| 3800 | |
| 3801 | return; |
| 3802 | } |
| 3803 | |
| 3804 | |
| 3805 | /** |
| 3806 | * gather_hbainfo - HBA characteristics for the applications |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 3807 | * @adapter : HBA soft state |
| 3808 | * @hinfo : pointer to the caller's host info strucuture |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3809 | */ |
| 3810 | static int |
| 3811 | gather_hbainfo(adapter_t *adapter, mraid_hba_info_t *hinfo) |
| 3812 | { |
| 3813 | uint8_t dmajor; |
| 3814 | |
| 3815 | dmajor = megaraid_mbox_version[0]; |
| 3816 | |
| 3817 | hinfo->pci_vendor_id = adapter->pdev->vendor; |
| 3818 | hinfo->pci_device_id = adapter->pdev->device; |
| 3819 | hinfo->subsys_vendor_id = adapter->pdev->subsystem_vendor; |
| 3820 | hinfo->subsys_device_id = adapter->pdev->subsystem_device; |
| 3821 | |
| 3822 | hinfo->pci_bus = adapter->pdev->bus->number; |
| 3823 | hinfo->pci_dev_fn = adapter->pdev->devfn; |
| 3824 | hinfo->pci_slot = PCI_SLOT(adapter->pdev->devfn); |
| 3825 | hinfo->irq = adapter->host->irq; |
| 3826 | hinfo->baseport = ADAP2RAIDDEV(adapter)->baseport; |
| 3827 | |
| 3828 | hinfo->unique_id = (hinfo->pci_bus << 8) | adapter->pdev->devfn; |
| 3829 | hinfo->host_no = adapter->host->host_no; |
| 3830 | |
| 3831 | return 0; |
| 3832 | } |
| 3833 | |
| 3834 | /* |
| 3835 | * END: Interface for the common management module |
| 3836 | */ |
| 3837 | |
| 3838 | |
| 3839 | |
| 3840 | /** |
| 3841 | * megaraid_sysfs_alloc_resources - allocate sysfs related resources |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 3842 | * @adapter : controller's soft state |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3843 | * |
| 3844 | * Allocate packets required to issue FW calls whenever the sysfs attributes |
| 3845 | * are read. These attributes would require up-to-date information from the |
| 3846 | * FW. Also set up resources for mutual exclusion to share these resources and |
| 3847 | * the wait queue. |
| 3848 | * |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 3849 | * Return 0 on success. |
| 3850 | * Return -ERROR_CODE on failure. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3851 | */ |
| 3852 | static int |
| 3853 | megaraid_sysfs_alloc_resources(adapter_t *adapter) |
| 3854 | { |
| 3855 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 3856 | int rval = 0; |
| 3857 | |
| 3858 | raid_dev->sysfs_uioc = kmalloc(sizeof(uioc_t), GFP_KERNEL); |
| 3859 | |
| 3860 | raid_dev->sysfs_mbox64 = kmalloc(sizeof(mbox64_t), GFP_KERNEL); |
| 3861 | |
| 3862 | raid_dev->sysfs_buffer = pci_alloc_consistent(adapter->pdev, |
| 3863 | PAGE_SIZE, &raid_dev->sysfs_buffer_dma); |
| 3864 | |
| 3865 | if (!raid_dev->sysfs_uioc || !raid_dev->sysfs_mbox64 || |
| 3866 | !raid_dev->sysfs_buffer) { |
| 3867 | |
| 3868 | con_log(CL_ANN, (KERN_WARNING |
| 3869 | "megaraid: out of memory, %s %d\n", __FUNCTION__, |
| 3870 | __LINE__)); |
| 3871 | |
| 3872 | rval = -ENOMEM; |
| 3873 | |
| 3874 | megaraid_sysfs_free_resources(adapter); |
| 3875 | } |
| 3876 | |
Matthias Kaehlcke | 0c2cc43 | 2007-07-09 12:00:11 -0700 | [diff] [blame] | 3877 | mutex_init(&raid_dev->sysfs_mtx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3878 | |
| 3879 | init_waitqueue_head(&raid_dev->sysfs_wait_q); |
| 3880 | |
| 3881 | return rval; |
| 3882 | } |
| 3883 | |
| 3884 | |
| 3885 | /** |
| 3886 | * megaraid_sysfs_free_resources - free sysfs related resources |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 3887 | * @adapter : controller's soft state |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3888 | * |
| 3889 | * Free packets allocated for sysfs FW commands |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3890 | */ |
| 3891 | static void |
| 3892 | megaraid_sysfs_free_resources(adapter_t *adapter) |
| 3893 | { |
| 3894 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 3895 | |
Jesper Juhl | c9475cb | 2005-11-07 01:01:26 -0800 | [diff] [blame] | 3896 | kfree(raid_dev->sysfs_uioc); |
| 3897 | kfree(raid_dev->sysfs_mbox64); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3898 | |
| 3899 | if (raid_dev->sysfs_buffer) { |
| 3900 | pci_free_consistent(adapter->pdev, PAGE_SIZE, |
| 3901 | raid_dev->sysfs_buffer, raid_dev->sysfs_buffer_dma); |
| 3902 | } |
| 3903 | } |
| 3904 | |
| 3905 | |
| 3906 | /** |
| 3907 | * megaraid_sysfs_get_ldmap_done - callback for get ldmap |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 3908 | * @uioc : completed packet |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3909 | * |
| 3910 | * Callback routine called in the ISR/tasklet context for get ldmap call |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3911 | */ |
| 3912 | static void |
| 3913 | megaraid_sysfs_get_ldmap_done(uioc_t *uioc) |
| 3914 | { |
| 3915 | adapter_t *adapter = (adapter_t *)uioc->buf_vaddr; |
| 3916 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 3917 | |
| 3918 | uioc->status = 0; |
| 3919 | |
| 3920 | wake_up(&raid_dev->sysfs_wait_q); |
| 3921 | } |
| 3922 | |
| 3923 | |
| 3924 | /** |
| 3925 | * megaraid_sysfs_get_ldmap_timeout - timeout handling for get ldmap |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 3926 | * @data : timed out packet |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3927 | * |
| 3928 | * Timeout routine to recover and return to application, in case the adapter |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 3929 | * has stopped responding. A timeout of 60 seconds for this command seems like |
| 3930 | * a good value. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3931 | */ |
| 3932 | static void |
| 3933 | megaraid_sysfs_get_ldmap_timeout(unsigned long data) |
| 3934 | { |
| 3935 | uioc_t *uioc = (uioc_t *)data; |
| 3936 | adapter_t *adapter = (adapter_t *)uioc->buf_vaddr; |
| 3937 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 3938 | |
| 3939 | uioc->status = -ETIME; |
| 3940 | |
| 3941 | wake_up(&raid_dev->sysfs_wait_q); |
| 3942 | } |
| 3943 | |
| 3944 | |
| 3945 | /** |
| 3946 | * megaraid_sysfs_get_ldmap - get update logical drive map |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 3947 | * @adapter : controller's soft state |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3948 | * |
| 3949 | * This routine will be called whenever user reads the logical drive |
| 3950 | * attributes, go get the current logical drive mapping table from the |
| 3951 | * firmware. We use the managment API's to issue commands to the controller. |
| 3952 | * |
| 3953 | * NOTE: The commands issuance functionality is not generalized and |
| 3954 | * implemented in context of "get ld map" command only. If required, the |
| 3955 | * command issuance logical can be trivially pulled out and implemented as a |
| 3956 | * standalone libary. For now, this should suffice since there is no other |
| 3957 | * user of this interface. |
| 3958 | * |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 3959 | * Return 0 on success. |
| 3960 | * Return -1 on failure. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3961 | */ |
| 3962 | static int |
| 3963 | megaraid_sysfs_get_ldmap(adapter_t *adapter) |
| 3964 | { |
| 3965 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 3966 | uioc_t *uioc; |
| 3967 | mbox64_t *mbox64; |
| 3968 | mbox_t *mbox; |
| 3969 | char *raw_mbox; |
| 3970 | struct timer_list sysfs_timer; |
| 3971 | struct timer_list *timerp; |
| 3972 | caddr_t ldmap; |
| 3973 | int rval = 0; |
| 3974 | |
| 3975 | /* |
| 3976 | * Allow only one read at a time to go through the sysfs attributes |
| 3977 | */ |
Matthias Kaehlcke | 0c2cc43 | 2007-07-09 12:00:11 -0700 | [diff] [blame] | 3978 | mutex_lock(&raid_dev->sysfs_mtx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3979 | |
| 3980 | uioc = raid_dev->sysfs_uioc; |
| 3981 | mbox64 = raid_dev->sysfs_mbox64; |
| 3982 | ldmap = raid_dev->sysfs_buffer; |
| 3983 | |
| 3984 | memset(uioc, 0, sizeof(uioc_t)); |
| 3985 | memset(mbox64, 0, sizeof(mbox64_t)); |
| 3986 | memset(ldmap, 0, sizeof(raid_dev->curr_ldmap)); |
| 3987 | |
| 3988 | mbox = &mbox64->mbox32; |
| 3989 | raw_mbox = (char *)mbox; |
| 3990 | uioc->cmdbuf = (uint64_t)(unsigned long)mbox64; |
| 3991 | uioc->buf_vaddr = (caddr_t)adapter; |
| 3992 | uioc->status = -ENODATA; |
| 3993 | uioc->done = megaraid_sysfs_get_ldmap_done; |
| 3994 | |
| 3995 | /* |
| 3996 | * Prepare the mailbox packet to get the current logical drive mapping |
| 3997 | * table |
| 3998 | */ |
| 3999 | mbox->xferaddr = (uint32_t)raid_dev->sysfs_buffer_dma; |
| 4000 | |
| 4001 | raw_mbox[0] = FC_DEL_LOGDRV; |
| 4002 | raw_mbox[2] = OP_GET_LDID_MAP; |
| 4003 | |
| 4004 | /* |
| 4005 | * Setup a timer to recover from a non-responding controller |
| 4006 | */ |
| 4007 | timerp = &sysfs_timer; |
| 4008 | init_timer(timerp); |
| 4009 | |
| 4010 | timerp->function = megaraid_sysfs_get_ldmap_timeout; |
| 4011 | timerp->data = (unsigned long)uioc; |
| 4012 | timerp->expires = jiffies + 60 * HZ; |
| 4013 | |
| 4014 | add_timer(timerp); |
| 4015 | |
| 4016 | /* |
| 4017 | * Send the command to the firmware |
| 4018 | */ |
| 4019 | rval = megaraid_mbox_mm_command(adapter, uioc); |
| 4020 | |
| 4021 | if (rval == 0) { // command successfully issued |
| 4022 | wait_event(raid_dev->sysfs_wait_q, (uioc->status != -ENODATA)); |
| 4023 | |
| 4024 | /* |
| 4025 | * Check if the command timed out |
| 4026 | */ |
| 4027 | if (uioc->status == -ETIME) { |
| 4028 | con_log(CL_ANN, (KERN_NOTICE |
| 4029 | "megaraid: sysfs get ld map timed out\n")); |
| 4030 | |
| 4031 | rval = -ETIME; |
| 4032 | } |
| 4033 | else { |
| 4034 | rval = mbox->status; |
| 4035 | } |
| 4036 | |
| 4037 | if (rval == 0) { |
| 4038 | memcpy(raid_dev->curr_ldmap, ldmap, |
| 4039 | sizeof(raid_dev->curr_ldmap)); |
| 4040 | } |
| 4041 | else { |
| 4042 | con_log(CL_ANN, (KERN_NOTICE |
| 4043 | "megaraid: get ld map failed with %x\n", rval)); |
| 4044 | } |
| 4045 | } |
| 4046 | else { |
| 4047 | con_log(CL_ANN, (KERN_NOTICE |
| 4048 | "megaraid: could not issue ldmap command:%x\n", rval)); |
| 4049 | } |
| 4050 | |
| 4051 | |
| 4052 | del_timer_sync(timerp); |
| 4053 | |
Matthias Kaehlcke | 0c2cc43 | 2007-07-09 12:00:11 -0700 | [diff] [blame] | 4054 | mutex_unlock(&raid_dev->sysfs_mtx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4055 | |
| 4056 | return rval; |
| 4057 | } |
| 4058 | |
| 4059 | |
| 4060 | /** |
| 4061 | * megaraid_sysfs_show_app_hndl - display application handle for this adapter |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 4062 | * @cdev : class device object representation for the host |
| 4063 | * @buf : buffer to send data to |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4064 | * |
| 4065 | * Display the handle used by the applications while executing management |
| 4066 | * tasks on the adapter. We invoke a management module API to get the adapter |
| 4067 | * handle, since we do not interface with applications directly. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4068 | */ |
| 4069 | static ssize_t |
| 4070 | megaraid_sysfs_show_app_hndl(struct class_device *cdev, char *buf) |
| 4071 | { |
| 4072 | struct Scsi_Host *shost = class_to_shost(cdev); |
| 4073 | adapter_t *adapter = (adapter_t *)SCSIHOST2ADAP(shost); |
| 4074 | uint32_t app_hndl; |
| 4075 | |
| 4076 | app_hndl = mraid_mm_adapter_app_handle(adapter->unique_id); |
| 4077 | |
| 4078 | return snprintf(buf, 8, "%u\n", app_hndl); |
| 4079 | } |
| 4080 | |
| 4081 | |
| 4082 | /** |
| 4083 | * megaraid_sysfs_show_ldnum - display the logical drive number for this device |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 4084 | * @dev : device object representation for the scsi device |
| 4085 | * @attr : device attribute to show |
| 4086 | * @buf : buffer to send data to |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4087 | * |
| 4088 | * Display the logical drive number for the device in question, if it a valid |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 4089 | * logical drive. For physical devices, "-1" is returned. |
| 4090 | * |
| 4091 | * The logical drive number is displayed in following format: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4092 | * |
| 4093 | * <SCSI ID> <LD NUM> <LD STICKY ID> <APP ADAPTER HANDLE> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4094 | * |
Randy Dunlap | a69b74d | 2007-01-05 22:41:48 -0800 | [diff] [blame] | 4095 | * <int> <int> <int> <int> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4096 | */ |
| 4097 | static ssize_t |
Yani Ioannou | 10523b3 | 2005-05-17 06:43:37 -0400 | [diff] [blame] | 4098 | 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] | 4099 | { |
| 4100 | struct scsi_device *sdev = to_scsi_device(dev); |
| 4101 | adapter_t *adapter = (adapter_t *)SCSIHOST2ADAP(sdev->host); |
| 4102 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); |
| 4103 | int scsi_id = -1; |
| 4104 | int logical_drv = -1; |
| 4105 | int ldid_map = -1; |
| 4106 | uint32_t app_hndl = 0; |
| 4107 | int mapped_sdev_id; |
| 4108 | int rval; |
| 4109 | int i; |
| 4110 | |
| 4111 | if (raid_dev->random_del_supported && |
| 4112 | MRAID_IS_LOGICAL_SDEV(adapter, sdev)) { |
| 4113 | |
| 4114 | rval = megaraid_sysfs_get_ldmap(adapter); |
| 4115 | if (rval == 0) { |
| 4116 | |
| 4117 | for (i = 0; i < MAX_LOGICAL_DRIVES_40LD; i++) { |
| 4118 | |
| 4119 | mapped_sdev_id = sdev->id; |
| 4120 | |
| 4121 | if (sdev->id > adapter->init_id) { |
| 4122 | mapped_sdev_id -= 1; |
| 4123 | } |
| 4124 | |
| 4125 | if (raid_dev->curr_ldmap[i] == mapped_sdev_id) { |
| 4126 | |
| 4127 | scsi_id = sdev->id; |
| 4128 | |
| 4129 | logical_drv = i; |
| 4130 | |
| 4131 | ldid_map = raid_dev->curr_ldmap[i]; |
| 4132 | |
| 4133 | app_hndl = mraid_mm_adapter_app_handle( |
| 4134 | adapter->unique_id); |
| 4135 | |
| 4136 | break; |
| 4137 | } |
| 4138 | } |
| 4139 | } |
| 4140 | else { |
| 4141 | con_log(CL_ANN, (KERN_NOTICE |
| 4142 | "megaraid: sysfs get ld map failed: %x\n", |
| 4143 | rval)); |
| 4144 | } |
| 4145 | } |
| 4146 | |
| 4147 | return snprintf(buf, 36, "%d %d %d %d\n", scsi_id, logical_drv, |
| 4148 | ldid_map, app_hndl); |
| 4149 | } |
| 4150 | |
| 4151 | |
| 4152 | /* |
| 4153 | * END: Mailbox Low Level Driver |
| 4154 | */ |
| 4155 | module_init(megaraid_init); |
| 4156 | module_exit(megaraid_exit); |
| 4157 | |
| 4158 | /* vim: set ts=8 sw=8 tw=78 ai si: */ |