jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 1 | /* |
Sakthivel K | f586099 | 2013-04-17 16:37:02 +0530 | [diff] [blame] | 2 | * PMC-Sierra PM8001/8081/8088/8089 SAS/SATA based host adapters driver |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 3 | * |
| 4 | * Copyright (c) 2008-2009 USI Co., Ltd. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * 1. Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions, and the following disclaimer, |
| 12 | * without modification. |
| 13 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| 14 | * substantially similar to the "NO WARRANTY" disclaimer below |
| 15 | * ("Disclaimer") and any redistribution must be conditioned upon |
| 16 | * including a substantially similar Disclaimer requirement for further |
| 17 | * binary redistribution. |
| 18 | * 3. Neither the names of the above-listed copyright holders nor the names |
| 19 | * of any contributors may be used to endorse or promote products derived |
| 20 | * from this software without specific prior written permission. |
| 21 | * |
| 22 | * Alternatively, this software may be distributed under the terms of the |
| 23 | * GNU General Public License ("GPL") version 2 as published by the Free |
| 24 | * Software Foundation. |
| 25 | * |
| 26 | * NO WARRANTY |
| 27 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 28 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 29 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
| 30 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 31 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 32 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 33 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 34 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 35 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| 36 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 37 | * POSSIBILITY OF SUCH DAMAGES. |
| 38 | * |
| 39 | */ |
| 40 | |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 41 | #include <linux/slab.h> |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 42 | #include "pm8001_sas.h" |
| 43 | |
| 44 | /** |
| 45 | * pm8001_find_tag - from sas task to find out tag that belongs to this task |
| 46 | * @task: the task sent to the LLDD |
| 47 | * @tag: the found tag associated with the task |
| 48 | */ |
| 49 | static int pm8001_find_tag(struct sas_task *task, u32 *tag) |
| 50 | { |
| 51 | if (task->lldd_task) { |
| 52 | struct pm8001_ccb_info *ccb; |
| 53 | ccb = task->lldd_task; |
| 54 | *tag = ccb->ccb_tag; |
| 55 | return 1; |
| 56 | } |
| 57 | return 0; |
| 58 | } |
| 59 | |
| 60 | /** |
| 61 | * pm8001_tag_clear - clear the tags bitmap |
| 62 | * @pm8001_ha: our hba struct |
| 63 | * @tag: the found tag associated with the task |
| 64 | */ |
| 65 | static void pm8001_tag_clear(struct pm8001_hba_info *pm8001_ha, u32 tag) |
| 66 | { |
| 67 | void *bitmap = pm8001_ha->tags; |
| 68 | clear_bit(tag, bitmap); |
| 69 | } |
| 70 | |
Sakthivel K | c6b9ef5 | 2013-03-19 18:08:08 +0530 | [diff] [blame] | 71 | void pm8001_tag_free(struct pm8001_hba_info *pm8001_ha, u32 tag) |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 72 | { |
| 73 | pm8001_tag_clear(pm8001_ha, tag); |
| 74 | } |
| 75 | |
| 76 | static void pm8001_tag_set(struct pm8001_hba_info *pm8001_ha, u32 tag) |
| 77 | { |
| 78 | void *bitmap = pm8001_ha->tags; |
| 79 | set_bit(tag, bitmap); |
| 80 | } |
| 81 | |
| 82 | /** |
| 83 | * pm8001_tag_alloc - allocate a empty tag for task used. |
| 84 | * @pm8001_ha: our hba struct |
| 85 | * @tag_out: the found empty tag . |
| 86 | */ |
| 87 | inline int pm8001_tag_alloc(struct pm8001_hba_info *pm8001_ha, u32 *tag_out) |
| 88 | { |
| 89 | unsigned int index, tag; |
| 90 | void *bitmap = pm8001_ha->tags; |
| 91 | |
| 92 | index = find_first_zero_bit(bitmap, pm8001_ha->tags_num); |
| 93 | tag = index; |
| 94 | if (tag >= pm8001_ha->tags_num) |
| 95 | return -SAS_QUEUE_FULL; |
| 96 | pm8001_tag_set(pm8001_ha, tag); |
| 97 | *tag_out = tag; |
| 98 | return 0; |
| 99 | } |
| 100 | |
| 101 | void pm8001_tag_init(struct pm8001_hba_info *pm8001_ha) |
| 102 | { |
| 103 | int i; |
| 104 | for (i = 0; i < pm8001_ha->tags_num; ++i) |
| 105 | pm8001_tag_clear(pm8001_ha, i); |
| 106 | } |
| 107 | |
| 108 | /** |
| 109 | * pm8001_mem_alloc - allocate memory for pm8001. |
| 110 | * @pdev: pci device. |
| 111 | * @virt_addr: the allocated virtual address |
| 112 | * @pphys_addr_hi: the physical address high byte address. |
| 113 | * @pphys_addr_lo: the physical address low byte address. |
| 114 | * @mem_size: memory size. |
| 115 | */ |
| 116 | int pm8001_mem_alloc(struct pci_dev *pdev, void **virt_addr, |
| 117 | dma_addr_t *pphys_addr, u32 *pphys_addr_hi, |
| 118 | u32 *pphys_addr_lo, u32 mem_size, u32 align) |
| 119 | { |
| 120 | caddr_t mem_virt_alloc; |
| 121 | dma_addr_t mem_dma_handle; |
| 122 | u64 phys_align; |
| 123 | u64 align_offset = 0; |
| 124 | if (align) |
| 125 | align_offset = (dma_addr_t)align - 1; |
| 126 | mem_virt_alloc = |
| 127 | pci_alloc_consistent(pdev, mem_size + align, &mem_dma_handle); |
| 128 | if (!mem_virt_alloc) { |
| 129 | pm8001_printk("memory allocation error\n"); |
| 130 | return -1; |
| 131 | } |
| 132 | memset((void *)mem_virt_alloc, 0, mem_size+align); |
| 133 | *pphys_addr = mem_dma_handle; |
| 134 | phys_align = (*pphys_addr + align_offset) & ~align_offset; |
| 135 | *virt_addr = (void *)mem_virt_alloc + phys_align - *pphys_addr; |
| 136 | *pphys_addr_hi = upper_32_bits(phys_align); |
| 137 | *pphys_addr_lo = lower_32_bits(phys_align); |
| 138 | return 0; |
| 139 | } |
| 140 | /** |
| 141 | * pm8001_find_ha_by_dev - from domain device which come from sas layer to |
| 142 | * find out our hba struct. |
| 143 | * @dev: the domain device which from sas layer. |
| 144 | */ |
| 145 | static |
| 146 | struct pm8001_hba_info *pm8001_find_ha_by_dev(struct domain_device *dev) |
| 147 | { |
| 148 | struct sas_ha_struct *sha = dev->port->ha; |
| 149 | struct pm8001_hba_info *pm8001_ha = sha->lldd_ha; |
| 150 | return pm8001_ha; |
| 151 | } |
| 152 | |
| 153 | /** |
| 154 | * pm8001_phy_control - this function should be registered to |
| 155 | * sas_domain_function_template to provide libsas used, note: this is just |
| 156 | * control the HBA phy rather than other expander phy if you want control |
| 157 | * other phy, you should use SMP command. |
| 158 | * @sas_phy: which phy in HBA phys. |
| 159 | * @func: the operation. |
| 160 | * @funcdata: always NULL. |
| 161 | */ |
| 162 | int pm8001_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func, |
| 163 | void *funcdata) |
| 164 | { |
| 165 | int rc = 0, phy_id = sas_phy->id; |
| 166 | struct pm8001_hba_info *pm8001_ha = NULL; |
| 167 | struct sas_phy_linkrates *rates; |
| 168 | DECLARE_COMPLETION_ONSTACK(completion); |
Mark Salyzyn | d95d000 | 2012-01-17 09:18:57 -0500 | [diff] [blame] | 169 | unsigned long flags; |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 170 | pm8001_ha = sas_phy->ha->lldd_ha; |
| 171 | pm8001_ha->phy[phy_id].enable_completion = &completion; |
| 172 | switch (func) { |
| 173 | case PHY_FUNC_SET_LINK_RATE: |
| 174 | rates = funcdata; |
| 175 | if (rates->minimum_linkrate) { |
| 176 | pm8001_ha->phy[phy_id].minimum_linkrate = |
| 177 | rates->minimum_linkrate; |
| 178 | } |
| 179 | if (rates->maximum_linkrate) { |
| 180 | pm8001_ha->phy[phy_id].maximum_linkrate = |
| 181 | rates->maximum_linkrate; |
| 182 | } |
| 183 | if (pm8001_ha->phy[phy_id].phy_state == 0) { |
| 184 | PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id); |
| 185 | wait_for_completion(&completion); |
| 186 | } |
| 187 | PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id, |
| 188 | PHY_LINK_RESET); |
| 189 | break; |
| 190 | case PHY_FUNC_HARD_RESET: |
| 191 | if (pm8001_ha->phy[phy_id].phy_state == 0) { |
| 192 | PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id); |
| 193 | wait_for_completion(&completion); |
| 194 | } |
| 195 | PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id, |
| 196 | PHY_HARD_RESET); |
| 197 | break; |
| 198 | case PHY_FUNC_LINK_RESET: |
| 199 | if (pm8001_ha->phy[phy_id].phy_state == 0) { |
| 200 | PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id); |
| 201 | wait_for_completion(&completion); |
| 202 | } |
| 203 | PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id, |
| 204 | PHY_LINK_RESET); |
| 205 | break; |
| 206 | case PHY_FUNC_RELEASE_SPINUP_HOLD: |
| 207 | PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id, |
| 208 | PHY_LINK_RESET); |
| 209 | break; |
| 210 | case PHY_FUNC_DISABLE: |
| 211 | PM8001_CHIP_DISP->phy_stop_req(pm8001_ha, phy_id); |
| 212 | break; |
Mark Salyzyn | d95d000 | 2012-01-17 09:18:57 -0500 | [diff] [blame] | 213 | case PHY_FUNC_GET_EVENTS: |
| 214 | spin_lock_irqsave(&pm8001_ha->lock, flags); |
Sakthivel K | f586099 | 2013-04-17 16:37:02 +0530 | [diff] [blame] | 215 | if (pm8001_ha->chip_id == chip_8001) { |
| 216 | if (-1 == pm8001_bar4_shift(pm8001_ha, |
Mark Salyzyn | d95d000 | 2012-01-17 09:18:57 -0500 | [diff] [blame] | 217 | (phy_id < 4) ? 0x30000 : 0x40000)) { |
Sakthivel K | f586099 | 2013-04-17 16:37:02 +0530 | [diff] [blame] | 218 | spin_unlock_irqrestore(&pm8001_ha->lock, flags); |
| 219 | return -EINVAL; |
| 220 | } |
Mark Salyzyn | d95d000 | 2012-01-17 09:18:57 -0500 | [diff] [blame] | 221 | } |
| 222 | { |
| 223 | struct sas_phy *phy = sas_phy->phy; |
| 224 | uint32_t *qp = (uint32_t *)(((char *) |
| 225 | pm8001_ha->io_mem[2].memvirtaddr) |
| 226 | + 0x1034 + (0x4000 * (phy_id & 3))); |
| 227 | |
| 228 | phy->invalid_dword_count = qp[0]; |
| 229 | phy->running_disparity_error_count = qp[1]; |
| 230 | phy->loss_of_dword_sync_count = qp[3]; |
| 231 | phy->phy_reset_problem_count = qp[4]; |
| 232 | } |
Sakthivel K | f586099 | 2013-04-17 16:37:02 +0530 | [diff] [blame] | 233 | if (pm8001_ha->chip_id == chip_8001) |
| 234 | pm8001_bar4_shift(pm8001_ha, 0); |
Mark Salyzyn | d95d000 | 2012-01-17 09:18:57 -0500 | [diff] [blame] | 235 | spin_unlock_irqrestore(&pm8001_ha->lock, flags); |
| 236 | return 0; |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 237 | default: |
Mark Salyzyn | d95d000 | 2012-01-17 09:18:57 -0500 | [diff] [blame] | 238 | rc = -EOPNOTSUPP; |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 239 | } |
| 240 | msleep(300); |
| 241 | return rc; |
| 242 | } |
| 243 | |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 244 | /** |
| 245 | * pm8001_scan_start - we should enable all HBA phys by sending the phy_start |
| 246 | * command to HBA. |
| 247 | * @shost: the scsi host data. |
| 248 | */ |
| 249 | void pm8001_scan_start(struct Scsi_Host *shost) |
| 250 | { |
| 251 | int i; |
| 252 | struct pm8001_hba_info *pm8001_ha; |
| 253 | struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost); |
| 254 | pm8001_ha = sha->lldd_ha; |
Sakthivel K | f586099 | 2013-04-17 16:37:02 +0530 | [diff] [blame] | 255 | /* SAS_RE_INITIALIZATION not available in SPCv/ve */ |
| 256 | if (pm8001_ha->chip_id == chip_8001) |
| 257 | PM8001_CHIP_DISP->sas_re_init_req(pm8001_ha); |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 258 | for (i = 0; i < pm8001_ha->chip->n_phy; ++i) |
| 259 | PM8001_CHIP_DISP->phy_start_req(pm8001_ha, i); |
| 260 | } |
| 261 | |
| 262 | int pm8001_scan_finished(struct Scsi_Host *shost, unsigned long time) |
| 263 | { |
Dan Williams | b1124cd | 2011-12-19 16:42:34 -0800 | [diff] [blame] | 264 | struct sas_ha_struct *ha = SHOST_TO_SAS_HA(shost); |
| 265 | |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 266 | /* give the phy enabling interrupt event time to come in (1s |
| 267 | * is empirically about all it takes) */ |
| 268 | if (time < HZ) |
| 269 | return 0; |
| 270 | /* Wait for discovery to finish */ |
Dan Williams | b1124cd | 2011-12-19 16:42:34 -0800 | [diff] [blame] | 271 | sas_drain_work(ha); |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 272 | return 1; |
| 273 | } |
| 274 | |
| 275 | /** |
| 276 | * pm8001_task_prep_smp - the dispatcher function, prepare data for smp task |
| 277 | * @pm8001_ha: our hba card information |
| 278 | * @ccb: the ccb which attached to smp task |
| 279 | */ |
| 280 | static int pm8001_task_prep_smp(struct pm8001_hba_info *pm8001_ha, |
| 281 | struct pm8001_ccb_info *ccb) |
| 282 | { |
| 283 | return PM8001_CHIP_DISP->smp_req(pm8001_ha, ccb); |
| 284 | } |
| 285 | |
| 286 | u32 pm8001_get_ncq_tag(struct sas_task *task, u32 *tag) |
| 287 | { |
| 288 | struct ata_queued_cmd *qc = task->uldd_task; |
| 289 | if (qc) { |
| 290 | if (qc->tf.command == ATA_CMD_FPDMA_WRITE || |
| 291 | qc->tf.command == ATA_CMD_FPDMA_READ) { |
| 292 | *tag = qc->tag; |
| 293 | return 1; |
| 294 | } |
| 295 | } |
| 296 | return 0; |
| 297 | } |
| 298 | |
| 299 | /** |
| 300 | * pm8001_task_prep_ata - the dispatcher function, prepare data for sata task |
| 301 | * @pm8001_ha: our hba card information |
| 302 | * @ccb: the ccb which attached to sata task |
| 303 | */ |
| 304 | static int pm8001_task_prep_ata(struct pm8001_hba_info *pm8001_ha, |
| 305 | struct pm8001_ccb_info *ccb) |
| 306 | { |
| 307 | return PM8001_CHIP_DISP->sata_req(pm8001_ha, ccb); |
| 308 | } |
| 309 | |
| 310 | /** |
| 311 | * pm8001_task_prep_ssp_tm - the dispatcher function, prepare task management data |
| 312 | * @pm8001_ha: our hba card information |
| 313 | * @ccb: the ccb which attached to TM |
| 314 | * @tmf: the task management IU |
| 315 | */ |
| 316 | static int pm8001_task_prep_ssp_tm(struct pm8001_hba_info *pm8001_ha, |
| 317 | struct pm8001_ccb_info *ccb, struct pm8001_tmf_task *tmf) |
| 318 | { |
| 319 | return PM8001_CHIP_DISP->ssp_tm_req(pm8001_ha, ccb, tmf); |
| 320 | } |
| 321 | |
| 322 | /** |
| 323 | * pm8001_task_prep_ssp - the dispatcher function,prepare ssp data for ssp task |
| 324 | * @pm8001_ha: our hba card information |
| 325 | * @ccb: the ccb which attached to ssp task |
| 326 | */ |
| 327 | static int pm8001_task_prep_ssp(struct pm8001_hba_info *pm8001_ha, |
| 328 | struct pm8001_ccb_info *ccb) |
| 329 | { |
| 330 | return PM8001_CHIP_DISP->ssp_io_req(pm8001_ha, ccb); |
| 331 | } |
Dan Williams | 11e1636 | 2011-09-20 15:11:03 -0700 | [diff] [blame] | 332 | |
jack wang | 1cc943a | 2009-12-07 17:22:42 +0800 | [diff] [blame] | 333 | /* Find the local port id that's attached to this device */ |
| 334 | static int sas_find_local_port_id(struct domain_device *dev) |
| 335 | { |
| 336 | struct domain_device *pdev = dev->parent; |
| 337 | |
| 338 | /* Directly attached device */ |
| 339 | if (!pdev) |
| 340 | return dev->port->id; |
| 341 | while (pdev) { |
| 342 | struct domain_device *pdev_p = pdev->parent; |
| 343 | if (!pdev_p) |
| 344 | return pdev->port->id; |
| 345 | pdev = pdev->parent; |
| 346 | } |
| 347 | return 0; |
| 348 | } |
| 349 | |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 350 | /** |
jack_wang | 97ee208 | 2009-11-05 22:33:51 +0800 | [diff] [blame] | 351 | * pm8001_task_exec - queue the task(ssp, smp && ata) to the hardware. |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 352 | * @task: the task to be execute. |
| 353 | * @num: if can_queue great than 1, the task can be queued up. for SMP task, |
| 354 | * we always execute one one time. |
| 355 | * @gfp_flags: gfp_flags. |
jack_wang | 97ee208 | 2009-11-05 22:33:51 +0800 | [diff] [blame] | 356 | * @is_tmf: if it is task management task. |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 357 | * @tmf: the task management IU |
| 358 | */ |
| 359 | #define DEV_IS_GONE(pm8001_dev) \ |
James Bottomley | aa9f832 | 2013-05-07 14:44:06 -0700 | [diff] [blame] | 360 | ((!pm8001_dev || (pm8001_dev->dev_type == SAS_PHY_UNUSED))) |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 361 | static int pm8001_task_exec(struct sas_task *task, const int num, |
| 362 | gfp_t gfp_flags, int is_tmf, struct pm8001_tmf_task *tmf) |
| 363 | { |
| 364 | struct domain_device *dev = task->dev; |
| 365 | struct pm8001_hba_info *pm8001_ha; |
| 366 | struct pm8001_device *pm8001_dev; |
jack wang | 1cc943a | 2009-12-07 17:22:42 +0800 | [diff] [blame] | 367 | struct pm8001_port *port = NULL; |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 368 | struct sas_task *t = task; |
| 369 | struct pm8001_ccb_info *ccb; |
| 370 | u32 tag = 0xdeadbeef, rc, n_elem = 0; |
| 371 | u32 n = num; |
Dan Williams | 312d3e5 | 2011-11-17 17:59:50 -0800 | [diff] [blame] | 372 | unsigned long flags = 0; |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 373 | |
| 374 | if (!dev->port) { |
| 375 | struct task_status_struct *tsm = &t->task_status; |
| 376 | tsm->resp = SAS_TASK_UNDELIVERED; |
| 377 | tsm->stat = SAS_PHY_DOWN; |
James Bottomley | aa9f832 | 2013-05-07 14:44:06 -0700 | [diff] [blame] | 378 | if (dev->dev_type != SAS_SATA_DEV) |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 379 | t->task_done(t); |
| 380 | return 0; |
| 381 | } |
| 382 | pm8001_ha = pm8001_find_ha_by_dev(task->dev); |
| 383 | PM8001_IO_DBG(pm8001_ha, pm8001_printk("pm8001_task_exec device \n ")); |
| 384 | spin_lock_irqsave(&pm8001_ha->lock, flags); |
| 385 | do { |
| 386 | dev = t->dev; |
| 387 | pm8001_dev = dev->lldd_dev; |
jack wang | 1cc943a | 2009-12-07 17:22:42 +0800 | [diff] [blame] | 388 | port = &pm8001_ha->port[sas_find_local_port_id(dev)]; |
Mark Salyzyn | b90b378 | 2011-09-22 08:50:01 -0700 | [diff] [blame] | 389 | if (DEV_IS_GONE(pm8001_dev) || !port->port_attached) { |
jack wang | 1cc943a | 2009-12-07 17:22:42 +0800 | [diff] [blame] | 390 | if (sas_protocol_ata(t->task_proto)) { |
| 391 | struct task_status_struct *ts = &t->task_status; |
| 392 | ts->resp = SAS_TASK_UNDELIVERED; |
| 393 | ts->stat = SAS_PHY_DOWN; |
| 394 | |
| 395 | spin_unlock_irqrestore(&pm8001_ha->lock, flags); |
jack wang | 1cc943a | 2009-12-07 17:22:42 +0800 | [diff] [blame] | 396 | t->task_done(t); |
jack wang | 1cc943a | 2009-12-07 17:22:42 +0800 | [diff] [blame] | 397 | spin_lock_irqsave(&pm8001_ha->lock, flags); |
| 398 | if (n > 1) |
| 399 | t = list_entry(t->list.next, |
| 400 | struct sas_task, list); |
| 401 | continue; |
| 402 | } else { |
| 403 | struct task_status_struct *ts = &t->task_status; |
| 404 | ts->resp = SAS_TASK_UNDELIVERED; |
| 405 | ts->stat = SAS_PHY_DOWN; |
| 406 | t->task_done(t); |
| 407 | if (n > 1) |
| 408 | t = list_entry(t->list.next, |
| 409 | struct sas_task, list); |
| 410 | continue; |
| 411 | } |
| 412 | } |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 413 | rc = pm8001_tag_alloc(pm8001_ha, &tag); |
| 414 | if (rc) |
| 415 | goto err_out; |
| 416 | ccb = &pm8001_ha->ccb_info[tag]; |
| 417 | |
| 418 | if (!sas_protocol_ata(t->task_proto)) { |
| 419 | if (t->num_scatter) { |
| 420 | n_elem = dma_map_sg(pm8001_ha->dev, |
| 421 | t->scatter, |
| 422 | t->num_scatter, |
| 423 | t->data_dir); |
| 424 | if (!n_elem) { |
| 425 | rc = -ENOMEM; |
jack_wang | 97ee208 | 2009-11-05 22:33:51 +0800 | [diff] [blame] | 426 | goto err_out_tag; |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 427 | } |
| 428 | } |
| 429 | } else { |
| 430 | n_elem = t->num_scatter; |
| 431 | } |
| 432 | |
jack_wang | 97ee208 | 2009-11-05 22:33:51 +0800 | [diff] [blame] | 433 | t->lldd_task = ccb; |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 434 | ccb->n_elem = n_elem; |
| 435 | ccb->ccb_tag = tag; |
| 436 | ccb->task = t; |
| 437 | switch (t->task_proto) { |
| 438 | case SAS_PROTOCOL_SMP: |
| 439 | rc = pm8001_task_prep_smp(pm8001_ha, ccb); |
| 440 | break; |
| 441 | case SAS_PROTOCOL_SSP: |
| 442 | if (is_tmf) |
| 443 | rc = pm8001_task_prep_ssp_tm(pm8001_ha, |
| 444 | ccb, tmf); |
| 445 | else |
| 446 | rc = pm8001_task_prep_ssp(pm8001_ha, ccb); |
| 447 | break; |
| 448 | case SAS_PROTOCOL_SATA: |
| 449 | case SAS_PROTOCOL_STP: |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 450 | rc = pm8001_task_prep_ata(pm8001_ha, ccb); |
| 451 | break; |
| 452 | default: |
| 453 | dev_printk(KERN_ERR, pm8001_ha->dev, |
| 454 | "unknown sas_task proto: 0x%x\n", |
| 455 | t->task_proto); |
| 456 | rc = -EINVAL; |
| 457 | break; |
| 458 | } |
| 459 | |
| 460 | if (rc) { |
| 461 | PM8001_IO_DBG(pm8001_ha, |
| 462 | pm8001_printk("rc is %x\n", rc)); |
| 463 | goto err_out_tag; |
| 464 | } |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 465 | /* TODO: select normal or high priority */ |
| 466 | spin_lock(&t->task_state_lock); |
| 467 | t->task_state_flags |= SAS_TASK_AT_INITIATOR; |
| 468 | spin_unlock(&t->task_state_lock); |
| 469 | pm8001_dev->running_req++; |
| 470 | if (n > 1) |
| 471 | t = list_entry(t->list.next, struct sas_task, list); |
| 472 | } while (--n); |
| 473 | rc = 0; |
| 474 | goto out_done; |
| 475 | |
| 476 | err_out_tag: |
| 477 | pm8001_tag_free(pm8001_ha, tag); |
| 478 | err_out: |
| 479 | dev_printk(KERN_ERR, pm8001_ha->dev, "pm8001 exec failed[%d]!\n", rc); |
| 480 | if (!sas_protocol_ata(t->task_proto)) |
| 481 | if (n_elem) |
| 482 | dma_unmap_sg(pm8001_ha->dev, t->scatter, n_elem, |
| 483 | t->data_dir); |
| 484 | out_done: |
| 485 | spin_unlock_irqrestore(&pm8001_ha->lock, flags); |
| 486 | return rc; |
| 487 | } |
| 488 | |
| 489 | /** |
| 490 | * pm8001_queue_command - register for upper layer used, all IO commands sent |
| 491 | * to HBA are from this interface. |
| 492 | * @task: the task to be execute. |
| 493 | * @num: if can_queue great than 1, the task can be queued up. for SMP task, |
| 494 | * we always execute one one time |
| 495 | * @gfp_flags: gfp_flags |
| 496 | */ |
| 497 | int pm8001_queue_command(struct sas_task *task, const int num, |
| 498 | gfp_t gfp_flags) |
| 499 | { |
| 500 | return pm8001_task_exec(task, num, gfp_flags, 0, NULL); |
| 501 | } |
| 502 | |
| 503 | void pm8001_ccb_free(struct pm8001_hba_info *pm8001_ha, u32 ccb_idx) |
| 504 | { |
| 505 | pm8001_tag_clear(pm8001_ha, ccb_idx); |
| 506 | } |
| 507 | |
| 508 | /** |
| 509 | * pm8001_ccb_task_free - free the sg for ssp and smp command, free the ccb. |
| 510 | * @pm8001_ha: our hba card information |
| 511 | * @ccb: the ccb which attached to ssp task |
| 512 | * @task: the task to be free. |
| 513 | * @ccb_idx: ccb index. |
| 514 | */ |
| 515 | void pm8001_ccb_task_free(struct pm8001_hba_info *pm8001_ha, |
| 516 | struct sas_task *task, struct pm8001_ccb_info *ccb, u32 ccb_idx) |
| 517 | { |
| 518 | if (!ccb->task) |
| 519 | return; |
| 520 | if (!sas_protocol_ata(task->task_proto)) |
| 521 | if (ccb->n_elem) |
| 522 | dma_unmap_sg(pm8001_ha->dev, task->scatter, |
| 523 | task->num_scatter, task->data_dir); |
| 524 | |
| 525 | switch (task->task_proto) { |
| 526 | case SAS_PROTOCOL_SMP: |
| 527 | dma_unmap_sg(pm8001_ha->dev, &task->smp_task.smp_resp, 1, |
| 528 | PCI_DMA_FROMDEVICE); |
| 529 | dma_unmap_sg(pm8001_ha->dev, &task->smp_task.smp_req, 1, |
| 530 | PCI_DMA_TODEVICE); |
| 531 | break; |
| 532 | |
| 533 | case SAS_PROTOCOL_SATA: |
| 534 | case SAS_PROTOCOL_STP: |
| 535 | case SAS_PROTOCOL_SSP: |
| 536 | default: |
| 537 | /* do nothing */ |
| 538 | break; |
| 539 | } |
| 540 | task->lldd_task = NULL; |
| 541 | ccb->task = NULL; |
| 542 | ccb->ccb_tag = 0xFFFFFFFF; |
Mark Salyzyn | 5954d73 | 2012-01-17 11:52:24 -0500 | [diff] [blame] | 543 | ccb->open_retry = 0; |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 544 | pm8001_ccb_free(pm8001_ha, ccb_idx); |
| 545 | } |
| 546 | |
| 547 | /** |
jack_wang | 97ee208 | 2009-11-05 22:33:51 +0800 | [diff] [blame] | 548 | * pm8001_alloc_dev - find a empty pm8001_device |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 549 | * @pm8001_ha: our hba card information |
| 550 | */ |
| 551 | struct pm8001_device *pm8001_alloc_dev(struct pm8001_hba_info *pm8001_ha) |
| 552 | { |
| 553 | u32 dev; |
| 554 | for (dev = 0; dev < PM8001_MAX_DEVICES; dev++) { |
James Bottomley | aa9f832 | 2013-05-07 14:44:06 -0700 | [diff] [blame] | 555 | if (pm8001_ha->devices[dev].dev_type == SAS_PHY_UNUSED) { |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 556 | pm8001_ha->devices[dev].id = dev; |
| 557 | return &pm8001_ha->devices[dev]; |
| 558 | } |
| 559 | } |
| 560 | if (dev == PM8001_MAX_DEVICES) { |
| 561 | PM8001_FAIL_DBG(pm8001_ha, |
| 562 | pm8001_printk("max support %d devices, ignore ..\n", |
| 563 | PM8001_MAX_DEVICES)); |
| 564 | } |
| 565 | return NULL; |
| 566 | } |
Sakthivel K | c6b9ef5 | 2013-03-19 18:08:08 +0530 | [diff] [blame] | 567 | /** |
| 568 | * pm8001_find_dev - find a matching pm8001_device |
| 569 | * @pm8001_ha: our hba card information |
| 570 | */ |
| 571 | struct pm8001_device *pm8001_find_dev(struct pm8001_hba_info *pm8001_ha, |
| 572 | u32 device_id) |
| 573 | { |
| 574 | u32 dev; |
| 575 | for (dev = 0; dev < PM8001_MAX_DEVICES; dev++) { |
| 576 | if (pm8001_ha->devices[dev].device_id == device_id) |
| 577 | return &pm8001_ha->devices[dev]; |
| 578 | } |
| 579 | if (dev == PM8001_MAX_DEVICES) { |
| 580 | PM8001_FAIL_DBG(pm8001_ha, pm8001_printk("NO MATCHING " |
| 581 | "DEVICE FOUND !!!\n")); |
| 582 | } |
| 583 | return NULL; |
| 584 | } |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 585 | |
| 586 | static void pm8001_free_dev(struct pm8001_device *pm8001_dev) |
| 587 | { |
| 588 | u32 id = pm8001_dev->id; |
| 589 | memset(pm8001_dev, 0, sizeof(*pm8001_dev)); |
| 590 | pm8001_dev->id = id; |
James Bottomley | aa9f832 | 2013-05-07 14:44:06 -0700 | [diff] [blame] | 591 | pm8001_dev->dev_type = SAS_PHY_UNUSED; |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 592 | pm8001_dev->device_id = PM8001_MAX_DEVICES; |
| 593 | pm8001_dev->sas_device = NULL; |
| 594 | } |
| 595 | |
| 596 | /** |
jack_wang | 97ee208 | 2009-11-05 22:33:51 +0800 | [diff] [blame] | 597 | * pm8001_dev_found_notify - libsas notify a device is found. |
| 598 | * @dev: the device structure which sas layer used. |
| 599 | * |
| 600 | * when libsas find a sas domain device, it should tell the LLDD that |
| 601 | * device is found, and then LLDD register this device to HBA firmware |
| 602 | * by the command "OPC_INB_REG_DEV", after that the HBA will assign a |
| 603 | * device ID(according to device's sas address) and returned it to LLDD. From |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 604 | * now on, we communicate with HBA FW with the device ID which HBA assigned |
Daniel Mack | 3ad2f3fb | 2010-02-03 08:01:28 +0800 | [diff] [blame] | 605 | * rather than sas address. it is the necessary step for our HBA but it is |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 606 | * the optional for other HBA driver. |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 607 | */ |
| 608 | static int pm8001_dev_found_notify(struct domain_device *dev) |
| 609 | { |
| 610 | unsigned long flags = 0; |
| 611 | int res = 0; |
| 612 | struct pm8001_hba_info *pm8001_ha = NULL; |
| 613 | struct domain_device *parent_dev = dev->parent; |
| 614 | struct pm8001_device *pm8001_device; |
| 615 | DECLARE_COMPLETION_ONSTACK(completion); |
| 616 | u32 flag = 0; |
| 617 | pm8001_ha = pm8001_find_ha_by_dev(dev); |
| 618 | spin_lock_irqsave(&pm8001_ha->lock, flags); |
| 619 | |
| 620 | pm8001_device = pm8001_alloc_dev(pm8001_ha); |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 621 | if (!pm8001_device) { |
| 622 | res = -1; |
| 623 | goto found_out; |
| 624 | } |
jack wang | f01f4e6 | 2009-12-07 17:22:55 +0800 | [diff] [blame] | 625 | pm8001_device->sas_device = dev; |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 626 | dev->lldd_dev = pm8001_device; |
| 627 | pm8001_device->dev_type = dev->dev_type; |
| 628 | pm8001_device->dcompletion = &completion; |
| 629 | if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) { |
| 630 | int phy_id; |
| 631 | struct ex_phy *phy; |
| 632 | for (phy_id = 0; phy_id < parent_dev->ex_dev.num_phys; |
| 633 | phy_id++) { |
| 634 | phy = &parent_dev->ex_dev.ex_phy[phy_id]; |
| 635 | if (SAS_ADDR(phy->attached_sas_addr) |
| 636 | == SAS_ADDR(dev->sas_addr)) { |
| 637 | pm8001_device->attached_phy = phy_id; |
| 638 | break; |
| 639 | } |
| 640 | } |
| 641 | if (phy_id == parent_dev->ex_dev.num_phys) { |
| 642 | PM8001_FAIL_DBG(pm8001_ha, |
| 643 | pm8001_printk("Error: no attached dev:%016llx" |
| 644 | " at ex:%016llx.\n", SAS_ADDR(dev->sas_addr), |
| 645 | SAS_ADDR(parent_dev->sas_addr))); |
| 646 | res = -1; |
| 647 | } |
| 648 | } else { |
James Bottomley | aa9f832 | 2013-05-07 14:44:06 -0700 | [diff] [blame] | 649 | if (dev->dev_type == SAS_SATA_DEV) { |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 650 | pm8001_device->attached_phy = |
| 651 | dev->rphy->identify.phy_identifier; |
| 652 | flag = 1; /* directly sata*/ |
| 653 | } |
| 654 | } /*register this device to HBA*/ |
Mark Salyzyn | 6fbc769 | 2011-09-26 07:57:36 -0700 | [diff] [blame] | 655 | PM8001_DISC_DBG(pm8001_ha, pm8001_printk("Found device\n")); |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 656 | PM8001_CHIP_DISP->reg_dev_req(pm8001_ha, pm8001_device, flag); |
| 657 | spin_unlock_irqrestore(&pm8001_ha->lock, flags); |
| 658 | wait_for_completion(&completion); |
James Bottomley | aa9f832 | 2013-05-07 14:44:06 -0700 | [diff] [blame] | 659 | if (dev->dev_type == SAS_END_DEVICE) |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 660 | msleep(50); |
Mark Salyzyn | 5c4fb76 | 2012-01-17 12:56:45 -0500 | [diff] [blame] | 661 | pm8001_ha->flags = PM8001F_RUN_TIME; |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 662 | return 0; |
| 663 | found_out: |
| 664 | spin_unlock_irqrestore(&pm8001_ha->lock, flags); |
| 665 | return res; |
| 666 | } |
| 667 | |
| 668 | int pm8001_dev_found(struct domain_device *dev) |
| 669 | { |
| 670 | return pm8001_dev_found_notify(dev); |
| 671 | } |
| 672 | |
Sakthivel K | c6b9ef5 | 2013-03-19 18:08:08 +0530 | [diff] [blame] | 673 | void pm8001_task_done(struct sas_task *task) |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 674 | { |
Dan Williams | f0bf750 | 2012-06-21 23:36:30 -0700 | [diff] [blame] | 675 | if (!del_timer(&task->slow_task->timer)) |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 676 | return; |
Dan Williams | f0bf750 | 2012-06-21 23:36:30 -0700 | [diff] [blame] | 677 | complete(&task->slow_task->completion); |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 678 | } |
| 679 | |
| 680 | static void pm8001_tmf_timedout(unsigned long data) |
| 681 | { |
| 682 | struct sas_task *task = (struct sas_task *)data; |
| 683 | |
| 684 | task->task_state_flags |= SAS_TASK_STATE_ABORTED; |
Dan Williams | f0bf750 | 2012-06-21 23:36:30 -0700 | [diff] [blame] | 685 | complete(&task->slow_task->completion); |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 686 | } |
| 687 | |
| 688 | #define PM8001_TASK_TIMEOUT 20 |
| 689 | /** |
jack_wang | 97ee208 | 2009-11-05 22:33:51 +0800 | [diff] [blame] | 690 | * pm8001_exec_internal_tmf_task - execute some task management commands. |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 691 | * @dev: the wanted device. |
| 692 | * @tmf: which task management wanted to be take. |
| 693 | * @para_len: para_len. |
| 694 | * @parameter: ssp task parameter. |
jack_wang | 97ee208 | 2009-11-05 22:33:51 +0800 | [diff] [blame] | 695 | * |
| 696 | * when errors or exception happened, we may want to do something, for example |
| 697 | * abort the issued task which result in this execption, it is done by calling |
| 698 | * this function, note it is also with the task execute interface. |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 699 | */ |
| 700 | static int pm8001_exec_internal_tmf_task(struct domain_device *dev, |
| 701 | void *parameter, u32 para_len, struct pm8001_tmf_task *tmf) |
| 702 | { |
| 703 | int res, retry; |
| 704 | struct sas_task *task = NULL; |
| 705 | struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev); |
Anand Kumar Santhanam | e912457b | 2013-09-17 16:58:10 +0530 | [diff] [blame^] | 706 | struct pm8001_device *pm8001_dev = dev->lldd_dev; |
| 707 | DECLARE_COMPLETION_ONSTACK(completion_setstate); |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 708 | |
| 709 | for (retry = 0; retry < 3; retry++) { |
Dan Williams | f0bf750 | 2012-06-21 23:36:30 -0700 | [diff] [blame] | 710 | task = sas_alloc_slow_task(GFP_KERNEL); |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 711 | if (!task) |
| 712 | return -ENOMEM; |
| 713 | |
| 714 | task->dev = dev; |
| 715 | task->task_proto = dev->tproto; |
| 716 | memcpy(&task->ssp_task, parameter, para_len); |
| 717 | task->task_done = pm8001_task_done; |
Dan Williams | f0bf750 | 2012-06-21 23:36:30 -0700 | [diff] [blame] | 718 | task->slow_task->timer.data = (unsigned long)task; |
| 719 | task->slow_task->timer.function = pm8001_tmf_timedout; |
| 720 | task->slow_task->timer.expires = jiffies + PM8001_TASK_TIMEOUT*HZ; |
| 721 | add_timer(&task->slow_task->timer); |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 722 | |
| 723 | res = pm8001_task_exec(task, 1, GFP_KERNEL, 1, tmf); |
| 724 | |
| 725 | if (res) { |
Dan Williams | f0bf750 | 2012-06-21 23:36:30 -0700 | [diff] [blame] | 726 | del_timer(&task->slow_task->timer); |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 727 | PM8001_FAIL_DBG(pm8001_ha, |
| 728 | pm8001_printk("Executing internal task " |
| 729 | "failed\n")); |
| 730 | goto ex_err; |
| 731 | } |
Dan Williams | f0bf750 | 2012-06-21 23:36:30 -0700 | [diff] [blame] | 732 | wait_for_completion(&task->slow_task->completion); |
Anand Kumar Santhanam | e912457b | 2013-09-17 16:58:10 +0530 | [diff] [blame^] | 733 | if (pm8001_ha->chip_id != chip_8001) { |
| 734 | pm8001_dev->setds_completion = &completion_setstate; |
| 735 | PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha, |
| 736 | pm8001_dev, 0x01); |
| 737 | wait_for_completion(&completion_setstate); |
| 738 | } |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 739 | res = -TMF_RESP_FUNC_FAILED; |
| 740 | /* Even TMF timed out, return direct. */ |
| 741 | if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) { |
| 742 | if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) { |
| 743 | PM8001_FAIL_DBG(pm8001_ha, |
| 744 | pm8001_printk("TMF task[%x]timeout.\n", |
| 745 | tmf->tmf)); |
| 746 | goto ex_err; |
| 747 | } |
| 748 | } |
| 749 | |
| 750 | if (task->task_status.resp == SAS_TASK_COMPLETE && |
James Bottomley | df64d3c | 2010-07-27 15:51:13 -0500 | [diff] [blame] | 751 | task->task_status.stat == SAM_STAT_GOOD) { |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 752 | res = TMF_RESP_FUNC_COMPLETE; |
| 753 | break; |
| 754 | } |
| 755 | |
| 756 | if (task->task_status.resp == SAS_TASK_COMPLETE && |
| 757 | task->task_status.stat == SAS_DATA_UNDERRUN) { |
| 758 | /* no error, but return the number of bytes of |
| 759 | * underrun */ |
| 760 | res = task->task_status.residual; |
| 761 | break; |
| 762 | } |
| 763 | |
| 764 | if (task->task_status.resp == SAS_TASK_COMPLETE && |
| 765 | task->task_status.stat == SAS_DATA_OVERRUN) { |
| 766 | PM8001_FAIL_DBG(pm8001_ha, |
| 767 | pm8001_printk("Blocked task error.\n")); |
| 768 | res = -EMSGSIZE; |
| 769 | break; |
| 770 | } else { |
jack_wang | 97ee208 | 2009-11-05 22:33:51 +0800 | [diff] [blame] | 771 | PM8001_EH_DBG(pm8001_ha, |
| 772 | pm8001_printk(" Task to dev %016llx response:" |
| 773 | "0x%x status 0x%x\n", |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 774 | SAS_ADDR(dev->sas_addr), |
| 775 | task->task_status.resp, |
| 776 | task->task_status.stat)); |
Dan Williams | 4fcf812 | 2011-07-29 17:26:39 -0700 | [diff] [blame] | 777 | sas_free_task(task); |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 778 | task = NULL; |
| 779 | } |
| 780 | } |
| 781 | ex_err: |
| 782 | BUG_ON(retry == 3 && task != NULL); |
Dan Williams | 4fcf812 | 2011-07-29 17:26:39 -0700 | [diff] [blame] | 783 | sas_free_task(task); |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 784 | return res; |
| 785 | } |
| 786 | |
| 787 | static int |
| 788 | pm8001_exec_internal_task_abort(struct pm8001_hba_info *pm8001_ha, |
| 789 | struct pm8001_device *pm8001_dev, struct domain_device *dev, u32 flag, |
| 790 | u32 task_tag) |
| 791 | { |
| 792 | int res, retry; |
jack_wang | 97ee208 | 2009-11-05 22:33:51 +0800 | [diff] [blame] | 793 | u32 ccb_tag; |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 794 | struct pm8001_ccb_info *ccb; |
| 795 | struct sas_task *task = NULL; |
| 796 | |
| 797 | for (retry = 0; retry < 3; retry++) { |
Dan Williams | f0bf750 | 2012-06-21 23:36:30 -0700 | [diff] [blame] | 798 | task = sas_alloc_slow_task(GFP_KERNEL); |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 799 | if (!task) |
| 800 | return -ENOMEM; |
| 801 | |
| 802 | task->dev = dev; |
| 803 | task->task_proto = dev->tproto; |
| 804 | task->task_done = pm8001_task_done; |
Dan Williams | f0bf750 | 2012-06-21 23:36:30 -0700 | [diff] [blame] | 805 | task->slow_task->timer.data = (unsigned long)task; |
| 806 | task->slow_task->timer.function = pm8001_tmf_timedout; |
| 807 | task->slow_task->timer.expires = jiffies + PM8001_TASK_TIMEOUT * HZ; |
| 808 | add_timer(&task->slow_task->timer); |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 809 | |
jack_wang | 97ee208 | 2009-11-05 22:33:51 +0800 | [diff] [blame] | 810 | res = pm8001_tag_alloc(pm8001_ha, &ccb_tag); |
| 811 | if (res) |
| 812 | return res; |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 813 | ccb = &pm8001_ha->ccb_info[ccb_tag]; |
| 814 | ccb->device = pm8001_dev; |
| 815 | ccb->ccb_tag = ccb_tag; |
| 816 | ccb->task = task; |
| 817 | |
| 818 | res = PM8001_CHIP_DISP->task_abort(pm8001_ha, |
| 819 | pm8001_dev, flag, task_tag, ccb_tag); |
| 820 | |
| 821 | if (res) { |
Dan Williams | f0bf750 | 2012-06-21 23:36:30 -0700 | [diff] [blame] | 822 | del_timer(&task->slow_task->timer); |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 823 | PM8001_FAIL_DBG(pm8001_ha, |
| 824 | pm8001_printk("Executing internal task " |
| 825 | "failed\n")); |
| 826 | goto ex_err; |
| 827 | } |
Dan Williams | f0bf750 | 2012-06-21 23:36:30 -0700 | [diff] [blame] | 828 | wait_for_completion(&task->slow_task->completion); |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 829 | res = TMF_RESP_FUNC_FAILED; |
| 830 | /* Even TMF timed out, return direct. */ |
| 831 | if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) { |
| 832 | if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) { |
| 833 | PM8001_FAIL_DBG(pm8001_ha, |
| 834 | pm8001_printk("TMF task timeout.\n")); |
| 835 | goto ex_err; |
| 836 | } |
| 837 | } |
| 838 | |
| 839 | if (task->task_status.resp == SAS_TASK_COMPLETE && |
James Bottomley | df64d3c | 2010-07-27 15:51:13 -0500 | [diff] [blame] | 840 | task->task_status.stat == SAM_STAT_GOOD) { |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 841 | res = TMF_RESP_FUNC_COMPLETE; |
| 842 | break; |
| 843 | |
| 844 | } else { |
jack_wang | 97ee208 | 2009-11-05 22:33:51 +0800 | [diff] [blame] | 845 | PM8001_EH_DBG(pm8001_ha, |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 846 | pm8001_printk(" Task to dev %016llx response: " |
| 847 | "0x%x status 0x%x\n", |
| 848 | SAS_ADDR(dev->sas_addr), |
| 849 | task->task_status.resp, |
| 850 | task->task_status.stat)); |
Dan Williams | 4fcf812 | 2011-07-29 17:26:39 -0700 | [diff] [blame] | 851 | sas_free_task(task); |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 852 | task = NULL; |
| 853 | } |
| 854 | } |
| 855 | ex_err: |
| 856 | BUG_ON(retry == 3 && task != NULL); |
Dan Williams | 4fcf812 | 2011-07-29 17:26:39 -0700 | [diff] [blame] | 857 | sas_free_task(task); |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 858 | return res; |
| 859 | } |
| 860 | |
| 861 | /** |
| 862 | * pm8001_dev_gone_notify - see the comments for "pm8001_dev_found_notify" |
| 863 | * @dev: the device structure which sas layer used. |
| 864 | */ |
| 865 | static void pm8001_dev_gone_notify(struct domain_device *dev) |
| 866 | { |
| 867 | unsigned long flags = 0; |
| 868 | u32 tag; |
| 869 | struct pm8001_hba_info *pm8001_ha; |
| 870 | struct pm8001_device *pm8001_dev = dev->lldd_dev; |
Dan Carpenter | 2471b89 | 2010-04-23 14:01:04 +0200 | [diff] [blame] | 871 | |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 872 | pm8001_ha = pm8001_find_ha_by_dev(dev); |
| 873 | spin_lock_irqsave(&pm8001_ha->lock, flags); |
| 874 | pm8001_tag_alloc(pm8001_ha, &tag); |
| 875 | if (pm8001_dev) { |
Dan Carpenter | 2471b89 | 2010-04-23 14:01:04 +0200 | [diff] [blame] | 876 | u32 device_id = pm8001_dev->device_id; |
| 877 | |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 878 | PM8001_DISC_DBG(pm8001_ha, |
| 879 | pm8001_printk("found dev[%d:%x] is gone.\n", |
| 880 | pm8001_dev->device_id, pm8001_dev->dev_type)); |
| 881 | if (pm8001_dev->running_req) { |
| 882 | spin_unlock_irqrestore(&pm8001_ha->lock, flags); |
| 883 | pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev , |
| 884 | dev, 1, 0); |
| 885 | spin_lock_irqsave(&pm8001_ha->lock, flags); |
| 886 | } |
| 887 | PM8001_CHIP_DISP->dereg_dev_req(pm8001_ha, device_id); |
| 888 | pm8001_free_dev(pm8001_dev); |
| 889 | } else { |
| 890 | PM8001_DISC_DBG(pm8001_ha, |
| 891 | pm8001_printk("Found dev has gone.\n")); |
| 892 | } |
| 893 | dev->lldd_dev = NULL; |
| 894 | spin_unlock_irqrestore(&pm8001_ha->lock, flags); |
| 895 | } |
| 896 | |
| 897 | void pm8001_dev_gone(struct domain_device *dev) |
| 898 | { |
| 899 | pm8001_dev_gone_notify(dev); |
| 900 | } |
| 901 | |
| 902 | static int pm8001_issue_ssp_tmf(struct domain_device *dev, |
| 903 | u8 *lun, struct pm8001_tmf_task *tmf) |
| 904 | { |
| 905 | struct sas_ssp_task ssp_task; |
| 906 | if (!(dev->tproto & SAS_PROTOCOL_SSP)) |
| 907 | return TMF_RESP_FUNC_ESUPP; |
| 908 | |
| 909 | strncpy((u8 *)&ssp_task.LUN, lun, 8); |
| 910 | return pm8001_exec_internal_tmf_task(dev, &ssp_task, sizeof(ssp_task), |
| 911 | tmf); |
| 912 | } |
| 913 | |
Mark Salyzyn | 5954d73 | 2012-01-17 11:52:24 -0500 | [diff] [blame] | 914 | /* retry commands by ha, by task and/or by device */ |
| 915 | void pm8001_open_reject_retry( |
| 916 | struct pm8001_hba_info *pm8001_ha, |
| 917 | struct sas_task *task_to_close, |
| 918 | struct pm8001_device *device_to_close) |
| 919 | { |
| 920 | int i; |
| 921 | unsigned long flags; |
| 922 | |
| 923 | if (pm8001_ha == NULL) |
| 924 | return; |
| 925 | |
| 926 | spin_lock_irqsave(&pm8001_ha->lock, flags); |
| 927 | |
| 928 | for (i = 0; i < PM8001_MAX_CCB; i++) { |
| 929 | struct sas_task *task; |
| 930 | struct task_status_struct *ts; |
| 931 | struct pm8001_device *pm8001_dev; |
| 932 | unsigned long flags1; |
| 933 | u32 tag; |
| 934 | struct pm8001_ccb_info *ccb = &pm8001_ha->ccb_info[i]; |
| 935 | |
| 936 | pm8001_dev = ccb->device; |
James Bottomley | aa9f832 | 2013-05-07 14:44:06 -0700 | [diff] [blame] | 937 | if (!pm8001_dev || (pm8001_dev->dev_type == SAS_PHY_UNUSED)) |
Mark Salyzyn | 5954d73 | 2012-01-17 11:52:24 -0500 | [diff] [blame] | 938 | continue; |
| 939 | if (!device_to_close) { |
| 940 | uintptr_t d = (uintptr_t)pm8001_dev |
| 941 | - (uintptr_t)&pm8001_ha->devices; |
| 942 | if (((d % sizeof(*pm8001_dev)) != 0) |
| 943 | || ((d / sizeof(*pm8001_dev)) >= PM8001_MAX_DEVICES)) |
| 944 | continue; |
| 945 | } else if (pm8001_dev != device_to_close) |
| 946 | continue; |
| 947 | tag = ccb->ccb_tag; |
| 948 | if (!tag || (tag == 0xFFFFFFFF)) |
| 949 | continue; |
| 950 | task = ccb->task; |
| 951 | if (!task || !task->task_done) |
| 952 | continue; |
| 953 | if (task_to_close && (task != task_to_close)) |
| 954 | continue; |
| 955 | ts = &task->task_status; |
| 956 | ts->resp = SAS_TASK_COMPLETE; |
| 957 | /* Force the midlayer to retry */ |
| 958 | ts->stat = SAS_OPEN_REJECT; |
| 959 | ts->open_rej_reason = SAS_OREJ_RSVD_RETRY; |
| 960 | if (pm8001_dev) |
| 961 | pm8001_dev->running_req--; |
| 962 | spin_lock_irqsave(&task->task_state_lock, flags1); |
| 963 | task->task_state_flags &= ~SAS_TASK_STATE_PENDING; |
| 964 | task->task_state_flags &= ~SAS_TASK_AT_INITIATOR; |
| 965 | task->task_state_flags |= SAS_TASK_STATE_DONE; |
| 966 | if (unlikely((task->task_state_flags |
| 967 | & SAS_TASK_STATE_ABORTED))) { |
| 968 | spin_unlock_irqrestore(&task->task_state_lock, |
| 969 | flags1); |
| 970 | pm8001_ccb_task_free(pm8001_ha, task, ccb, tag); |
| 971 | } else { |
| 972 | spin_unlock_irqrestore(&task->task_state_lock, |
| 973 | flags1); |
| 974 | pm8001_ccb_task_free(pm8001_ha, task, ccb, tag); |
| 975 | mb();/* in order to force CPU ordering */ |
| 976 | spin_unlock_irqrestore(&pm8001_ha->lock, flags); |
| 977 | task->task_done(task); |
| 978 | spin_lock_irqsave(&pm8001_ha->lock, flags); |
| 979 | } |
| 980 | } |
| 981 | |
| 982 | spin_unlock_irqrestore(&pm8001_ha->lock, flags); |
| 983 | } |
| 984 | |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 985 | /** |
| 986 | * Standard mandates link reset for ATA (type 0) and hard reset for |
| 987 | * SSP (type 1) , only for RECOVERY |
| 988 | */ |
| 989 | int pm8001_I_T_nexus_reset(struct domain_device *dev) |
| 990 | { |
| 991 | int rc = TMF_RESP_FUNC_FAILED; |
| 992 | struct pm8001_device *pm8001_dev; |
| 993 | struct pm8001_hba_info *pm8001_ha; |
| 994 | struct sas_phy *phy; |
Dan Williams | e7db822 | 2012-06-21 23:30:58 -0700 | [diff] [blame] | 995 | |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 996 | if (!dev || !dev->lldd_dev) |
Dan Williams | e7db822 | 2012-06-21 23:30:58 -0700 | [diff] [blame] | 997 | return -ENODEV; |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 998 | |
| 999 | pm8001_dev = dev->lldd_dev; |
| 1000 | pm8001_ha = pm8001_find_ha_by_dev(dev); |
Dan Williams | f41a0c4 | 2011-12-21 21:33:17 -0800 | [diff] [blame] | 1001 | phy = sas_get_local_phy(dev); |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 1002 | |
| 1003 | if (dev_is_sata(dev)) { |
| 1004 | DECLARE_COMPLETION_ONSTACK(completion_setstate); |
Dan Williams | f41a0c4 | 2011-12-21 21:33:17 -0800 | [diff] [blame] | 1005 | if (scsi_is_sas_phy_local(phy)) { |
| 1006 | rc = 0; |
| 1007 | goto out; |
| 1008 | } |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 1009 | rc = sas_phy_reset(phy, 1); |
| 1010 | msleep(2000); |
| 1011 | rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev , |
| 1012 | dev, 1, 0); |
| 1013 | pm8001_dev->setds_completion = &completion_setstate; |
| 1014 | rc = PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha, |
| 1015 | pm8001_dev, 0x01); |
| 1016 | wait_for_completion(&completion_setstate); |
Dan Williams | f41a0c4 | 2011-12-21 21:33:17 -0800 | [diff] [blame] | 1017 | } else { |
| 1018 | rc = sas_phy_reset(phy, 1); |
| 1019 | msleep(2000); |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 1020 | } |
| 1021 | PM8001_EH_DBG(pm8001_ha, pm8001_printk(" for device[%x]:rc=%d\n", |
| 1022 | pm8001_dev->device_id, rc)); |
Dan Williams | f41a0c4 | 2011-12-21 21:33:17 -0800 | [diff] [blame] | 1023 | out: |
| 1024 | sas_put_local_phy(phy); |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 1025 | return rc; |
| 1026 | } |
| 1027 | |
Sakthivel K | a6cb3d0 | 2013-03-19 18:08:40 +0530 | [diff] [blame] | 1028 | /* |
| 1029 | * This function handle the IT_NEXUS_XXX event or completion |
| 1030 | * status code for SSP/SATA/SMP I/O request. |
| 1031 | */ |
| 1032 | int pm8001_I_T_nexus_event_handler(struct domain_device *dev) |
| 1033 | { |
| 1034 | int rc = TMF_RESP_FUNC_FAILED; |
| 1035 | struct pm8001_device *pm8001_dev; |
| 1036 | struct pm8001_hba_info *pm8001_ha; |
| 1037 | struct sas_phy *phy; |
| 1038 | u32 device_id = 0; |
| 1039 | |
| 1040 | if (!dev || !dev->lldd_dev) |
| 1041 | return -1; |
| 1042 | |
| 1043 | pm8001_dev = dev->lldd_dev; |
| 1044 | device_id = pm8001_dev->device_id; |
| 1045 | pm8001_ha = pm8001_find_ha_by_dev(dev); |
| 1046 | |
| 1047 | PM8001_EH_DBG(pm8001_ha, |
| 1048 | pm8001_printk("I_T_Nexus handler invoked !!")); |
| 1049 | |
| 1050 | phy = sas_get_local_phy(dev); |
| 1051 | |
| 1052 | if (dev_is_sata(dev)) { |
| 1053 | DECLARE_COMPLETION_ONSTACK(completion_setstate); |
| 1054 | if (scsi_is_sas_phy_local(phy)) { |
| 1055 | rc = 0; |
| 1056 | goto out; |
| 1057 | } |
| 1058 | /* send internal ssp/sata/smp abort command to FW */ |
| 1059 | rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev , |
| 1060 | dev, 1, 0); |
| 1061 | msleep(100); |
| 1062 | |
| 1063 | /* deregister the target device */ |
| 1064 | pm8001_dev_gone_notify(dev); |
| 1065 | msleep(200); |
| 1066 | |
| 1067 | /*send phy reset to hard reset target */ |
| 1068 | rc = sas_phy_reset(phy, 1); |
| 1069 | msleep(2000); |
| 1070 | pm8001_dev->setds_completion = &completion_setstate; |
| 1071 | |
| 1072 | wait_for_completion(&completion_setstate); |
| 1073 | } else { |
| 1074 | /* send internal ssp/sata/smp abort command to FW */ |
| 1075 | rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev , |
| 1076 | dev, 1, 0); |
| 1077 | msleep(100); |
| 1078 | |
| 1079 | /* deregister the target device */ |
| 1080 | pm8001_dev_gone_notify(dev); |
| 1081 | msleep(200); |
| 1082 | |
| 1083 | /*send phy reset to hard reset target */ |
| 1084 | rc = sas_phy_reset(phy, 1); |
| 1085 | msleep(2000); |
| 1086 | } |
| 1087 | PM8001_EH_DBG(pm8001_ha, pm8001_printk(" for device[%x]:rc=%d\n", |
| 1088 | pm8001_dev->device_id, rc)); |
| 1089 | out: |
| 1090 | sas_put_local_phy(phy); |
| 1091 | |
| 1092 | return rc; |
| 1093 | } |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 1094 | /* mandatory SAM-3, the task reset the specified LUN*/ |
| 1095 | int pm8001_lu_reset(struct domain_device *dev, u8 *lun) |
| 1096 | { |
| 1097 | int rc = TMF_RESP_FUNC_FAILED; |
| 1098 | struct pm8001_tmf_task tmf_task; |
| 1099 | struct pm8001_device *pm8001_dev = dev->lldd_dev; |
| 1100 | struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev); |
| 1101 | if (dev_is_sata(dev)) { |
Dan Williams | f41a0c4 | 2011-12-21 21:33:17 -0800 | [diff] [blame] | 1102 | struct sas_phy *phy = sas_get_local_phy(dev); |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 1103 | rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev , |
| 1104 | dev, 1, 0); |
| 1105 | rc = sas_phy_reset(phy, 1); |
Dan Williams | f41a0c4 | 2011-12-21 21:33:17 -0800 | [diff] [blame] | 1106 | sas_put_local_phy(phy); |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 1107 | rc = PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha, |
| 1108 | pm8001_dev, 0x01); |
| 1109 | msleep(2000); |
| 1110 | } else { |
| 1111 | tmf_task.tmf = TMF_LU_RESET; |
| 1112 | rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task); |
| 1113 | } |
| 1114 | /* If failed, fall-through I_T_Nexus reset */ |
| 1115 | PM8001_EH_DBG(pm8001_ha, pm8001_printk("for device[%x]:rc=%d\n", |
| 1116 | pm8001_dev->device_id, rc)); |
| 1117 | return rc; |
| 1118 | } |
| 1119 | |
| 1120 | /* optional SAM-3 */ |
| 1121 | int pm8001_query_task(struct sas_task *task) |
| 1122 | { |
| 1123 | u32 tag = 0xdeadbeef; |
| 1124 | int i = 0; |
| 1125 | struct scsi_lun lun; |
| 1126 | struct pm8001_tmf_task tmf_task; |
| 1127 | int rc = TMF_RESP_FUNC_FAILED; |
| 1128 | if (unlikely(!task || !task->lldd_task || !task->dev)) |
| 1129 | return rc; |
| 1130 | |
| 1131 | if (task->task_proto & SAS_PROTOCOL_SSP) { |
| 1132 | struct scsi_cmnd *cmnd = task->uldd_task; |
| 1133 | struct domain_device *dev = task->dev; |
| 1134 | struct pm8001_hba_info *pm8001_ha = |
| 1135 | pm8001_find_ha_by_dev(dev); |
| 1136 | |
| 1137 | int_to_scsilun(cmnd->device->lun, &lun); |
| 1138 | rc = pm8001_find_tag(task, &tag); |
| 1139 | if (rc == 0) { |
| 1140 | rc = TMF_RESP_FUNC_FAILED; |
| 1141 | return rc; |
| 1142 | } |
| 1143 | PM8001_EH_DBG(pm8001_ha, pm8001_printk("Query:[")); |
| 1144 | for (i = 0; i < 16; i++) |
| 1145 | printk(KERN_INFO "%02x ", cmnd->cmnd[i]); |
| 1146 | printk(KERN_INFO "]\n"); |
| 1147 | tmf_task.tmf = TMF_QUERY_TASK; |
| 1148 | tmf_task.tag_of_task_to_be_managed = tag; |
| 1149 | |
| 1150 | rc = pm8001_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task); |
| 1151 | switch (rc) { |
| 1152 | /* The task is still in Lun, release it then */ |
| 1153 | case TMF_RESP_FUNC_SUCC: |
| 1154 | PM8001_EH_DBG(pm8001_ha, |
Mark Salyzyn | 6fbc769 | 2011-09-26 07:57:36 -0700 | [diff] [blame] | 1155 | pm8001_printk("The task is still in Lun\n")); |
| 1156 | break; |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 1157 | /* The task is not in Lun or failed, reset the phy */ |
| 1158 | case TMF_RESP_FUNC_FAILED: |
| 1159 | case TMF_RESP_FUNC_COMPLETE: |
| 1160 | PM8001_EH_DBG(pm8001_ha, |
| 1161 | pm8001_printk("The task is not in Lun or failed," |
Mark Salyzyn | 6fbc769 | 2011-09-26 07:57:36 -0700 | [diff] [blame] | 1162 | " reset the phy\n")); |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 1163 | break; |
| 1164 | } |
| 1165 | } |
| 1166 | pm8001_printk(":rc= %d\n", rc); |
| 1167 | return rc; |
| 1168 | } |
| 1169 | |
| 1170 | /* mandatory SAM-3, still need free task/ccb info, abord the specified task */ |
| 1171 | int pm8001_abort_task(struct sas_task *task) |
| 1172 | { |
| 1173 | unsigned long flags; |
| 1174 | u32 tag = 0xdeadbeef; |
| 1175 | u32 device_id; |
| 1176 | struct domain_device *dev ; |
| 1177 | struct pm8001_hba_info *pm8001_ha = NULL; |
| 1178 | struct pm8001_ccb_info *ccb; |
| 1179 | struct scsi_lun lun; |
| 1180 | struct pm8001_device *pm8001_dev; |
| 1181 | struct pm8001_tmf_task tmf_task; |
| 1182 | int rc = TMF_RESP_FUNC_FAILED; |
| 1183 | if (unlikely(!task || !task->lldd_task || !task->dev)) |
| 1184 | return rc; |
| 1185 | spin_lock_irqsave(&task->task_state_lock, flags); |
| 1186 | if (task->task_state_flags & SAS_TASK_STATE_DONE) { |
| 1187 | spin_unlock_irqrestore(&task->task_state_lock, flags); |
| 1188 | rc = TMF_RESP_FUNC_COMPLETE; |
| 1189 | goto out; |
| 1190 | } |
| 1191 | spin_unlock_irqrestore(&task->task_state_lock, flags); |
| 1192 | if (task->task_proto & SAS_PROTOCOL_SSP) { |
| 1193 | struct scsi_cmnd *cmnd = task->uldd_task; |
| 1194 | dev = task->dev; |
| 1195 | ccb = task->lldd_task; |
| 1196 | pm8001_dev = dev->lldd_dev; |
| 1197 | pm8001_ha = pm8001_find_ha_by_dev(dev); |
| 1198 | int_to_scsilun(cmnd->device->lun, &lun); |
| 1199 | rc = pm8001_find_tag(task, &tag); |
| 1200 | if (rc == 0) { |
| 1201 | printk(KERN_INFO "No such tag in %s\n", __func__); |
| 1202 | rc = TMF_RESP_FUNC_FAILED; |
| 1203 | return rc; |
| 1204 | } |
| 1205 | device_id = pm8001_dev->device_id; |
| 1206 | PM8001_EH_DBG(pm8001_ha, |
jack_wang | 97ee208 | 2009-11-05 22:33:51 +0800 | [diff] [blame] | 1207 | pm8001_printk("abort io to deviceid= %d\n", device_id)); |
| 1208 | tmf_task.tmf = TMF_ABORT_TASK; |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 1209 | tmf_task.tag_of_task_to_be_managed = tag; |
| 1210 | rc = pm8001_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task); |
jack_wang | 97ee208 | 2009-11-05 22:33:51 +0800 | [diff] [blame] | 1211 | pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev, |
jack wang | dbf9bfe | 2009-10-14 16:19:21 +0800 | [diff] [blame] | 1212 | pm8001_dev->sas_device, 0, tag); |
| 1213 | } else if (task->task_proto & SAS_PROTOCOL_SATA || |
| 1214 | task->task_proto & SAS_PROTOCOL_STP) { |
| 1215 | dev = task->dev; |
| 1216 | pm8001_dev = dev->lldd_dev; |
| 1217 | pm8001_ha = pm8001_find_ha_by_dev(dev); |
| 1218 | rc = pm8001_find_tag(task, &tag); |
| 1219 | if (rc == 0) { |
| 1220 | printk(KERN_INFO "No such tag in %s\n", __func__); |
| 1221 | rc = TMF_RESP_FUNC_FAILED; |
| 1222 | return rc; |
| 1223 | } |
| 1224 | rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev, |
| 1225 | pm8001_dev->sas_device, 0, tag); |
| 1226 | } else if (task->task_proto & SAS_PROTOCOL_SMP) { |
| 1227 | /* SMP */ |
| 1228 | dev = task->dev; |
| 1229 | pm8001_dev = dev->lldd_dev; |
| 1230 | pm8001_ha = pm8001_find_ha_by_dev(dev); |
| 1231 | rc = pm8001_find_tag(task, &tag); |
| 1232 | if (rc == 0) { |
| 1233 | printk(KERN_INFO "No such tag in %s\n", __func__); |
| 1234 | rc = TMF_RESP_FUNC_FAILED; |
| 1235 | return rc; |
| 1236 | } |
| 1237 | rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev, |
| 1238 | pm8001_dev->sas_device, 0, tag); |
| 1239 | |
| 1240 | } |
| 1241 | out: |
| 1242 | if (rc != TMF_RESP_FUNC_COMPLETE) |
| 1243 | pm8001_printk("rc= %d\n", rc); |
| 1244 | return rc; |
| 1245 | } |
| 1246 | |
| 1247 | int pm8001_abort_task_set(struct domain_device *dev, u8 *lun) |
| 1248 | { |
| 1249 | int rc = TMF_RESP_FUNC_FAILED; |
| 1250 | struct pm8001_tmf_task tmf_task; |
| 1251 | |
| 1252 | tmf_task.tmf = TMF_ABORT_TASK_SET; |
| 1253 | rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task); |
| 1254 | return rc; |
| 1255 | } |
| 1256 | |
| 1257 | int pm8001_clear_aca(struct domain_device *dev, u8 *lun) |
| 1258 | { |
| 1259 | int rc = TMF_RESP_FUNC_FAILED; |
| 1260 | struct pm8001_tmf_task tmf_task; |
| 1261 | |
| 1262 | tmf_task.tmf = TMF_CLEAR_ACA; |
| 1263 | rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task); |
| 1264 | |
| 1265 | return rc; |
| 1266 | } |
| 1267 | |
| 1268 | int pm8001_clear_task_set(struct domain_device *dev, u8 *lun) |
| 1269 | { |
| 1270 | int rc = TMF_RESP_FUNC_FAILED; |
| 1271 | struct pm8001_tmf_task tmf_task; |
| 1272 | struct pm8001_device *pm8001_dev = dev->lldd_dev; |
| 1273 | struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev); |
| 1274 | |
| 1275 | PM8001_EH_DBG(pm8001_ha, |
| 1276 | pm8001_printk("I_T_L_Q clear task set[%x]\n", |
| 1277 | pm8001_dev->device_id)); |
| 1278 | tmf_task.tmf = TMF_CLEAR_TASK_SET; |
| 1279 | rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task); |
| 1280 | return rc; |
| 1281 | } |
| 1282 | |