Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1 | /******************************************************************************* |
| 2 | * Filename: target_core_pscsi.c |
| 3 | * |
| 4 | * This file contains the generic target mode <-> Linux SCSI subsystem plugin. |
| 5 | * |
| 6 | * Copyright (c) 2003, 2004, 2005 PyX Technologies, Inc. |
| 7 | * Copyright (c) 2005, 2006, 2007 SBE, Inc. |
| 8 | * Copyright (c) 2007-2010 Rising Tide Systems |
| 9 | * Copyright (c) 2008-2010 Linux-iSCSI.org |
| 10 | * |
| 11 | * Nicholas A. Bellinger <nab@kernel.org> |
| 12 | * |
| 13 | * This program is free software; you can redistribute it and/or modify |
| 14 | * it under the terms of the GNU General Public License as published by |
| 15 | * the Free Software Foundation; either version 2 of the License, or |
| 16 | * (at your option) any later version. |
| 17 | * |
| 18 | * This program is distributed in the hope that it will be useful, |
| 19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 21 | * GNU General Public License for more details. |
| 22 | * |
| 23 | * You should have received a copy of the GNU General Public License |
| 24 | * along with this program; if not, write to the Free Software |
| 25 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 26 | * |
| 27 | ******************************************************************************/ |
| 28 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 29 | #include <linux/string.h> |
| 30 | #include <linux/parser.h> |
| 31 | #include <linux/timer.h> |
| 32 | #include <linux/blkdev.h> |
| 33 | #include <linux/blk_types.h> |
| 34 | #include <linux/slab.h> |
| 35 | #include <linux/spinlock.h> |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 36 | #include <linux/genhd.h> |
| 37 | #include <linux/cdrom.h> |
Christoph Hellwig | d6e0175 | 2012-05-20 11:59:14 -0400 | [diff] [blame] | 38 | #include <linux/ratelimit.h> |
Paul Gortmaker | 827509e | 2011-08-30 14:20:44 -0400 | [diff] [blame] | 39 | #include <linux/module.h> |
Christoph Hellwig | d6e0175 | 2012-05-20 11:59:14 -0400 | [diff] [blame] | 40 | #include <asm/unaligned.h> |
| 41 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 42 | #include <scsi/scsi.h> |
| 43 | #include <scsi/scsi_device.h> |
| 44 | #include <scsi/scsi_cmnd.h> |
| 45 | #include <scsi/scsi_host.h> |
Nicholas Bellinger | e66ecd5 | 2011-05-19 20:19:14 -0700 | [diff] [blame] | 46 | #include <scsi/scsi_tcq.h> |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 47 | |
| 48 | #include <target/target_core_base.h> |
Christoph Hellwig | c4795fb | 2011-11-16 09:46:48 -0500 | [diff] [blame] | 49 | #include <target/target_core_backend.h> |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 50 | |
Christoph Hellwig | d6e0175 | 2012-05-20 11:59:14 -0400 | [diff] [blame] | 51 | #include "target_core_alua.h" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 52 | #include "target_core_pscsi.h" |
| 53 | |
| 54 | #define ISPRINT(a) ((a >= ' ') && (a <= '~')) |
| 55 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 56 | static inline struct pscsi_dev_virt *PSCSI_DEV(struct se_device *dev) |
| 57 | { |
| 58 | return container_of(dev, struct pscsi_dev_virt, dev); |
| 59 | } |
| 60 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 61 | static struct se_subsystem_api pscsi_template; |
| 62 | |
Christoph Hellwig | 0c2ad7d | 2012-06-17 18:40:52 -0400 | [diff] [blame] | 63 | static int pscsi_execute_cmd(struct se_cmd *cmd); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 64 | static void pscsi_req_done(struct request *, int); |
| 65 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 66 | /* pscsi_attach_hba(): |
| 67 | * |
| 68 | * pscsi_get_sh() used scsi_host_lookup() to locate struct Scsi_Host. |
| 69 | * from the passed SCSI Host ID. |
| 70 | */ |
| 71 | static int pscsi_attach_hba(struct se_hba *hba, u32 host_id) |
| 72 | { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 73 | struct pscsi_hba_virt *phv; |
| 74 | |
| 75 | phv = kzalloc(sizeof(struct pscsi_hba_virt), GFP_KERNEL); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 76 | if (!phv) { |
| 77 | pr_err("Unable to allocate struct pscsi_hba_virt\n"); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 78 | return -ENOMEM; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 79 | } |
| 80 | phv->phv_host_id = host_id; |
Stefan Hajnoczi | e6a8a41 | 2012-02-23 18:15:26 +0000 | [diff] [blame] | 81 | phv->phv_mode = PHV_VIRTUAL_HOST_ID; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 82 | |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 83 | hba->hba_ptr = phv; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 84 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 85 | pr_debug("CORE_HBA[%d] - TCM SCSI HBA Driver %s on" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 86 | " Generic Target Core Stack %s\n", hba->hba_id, |
| 87 | PSCSI_VERSION, TARGET_CORE_MOD_VERSION); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 88 | pr_debug("CORE_HBA[%d] - Attached SCSI HBA to Generic\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 89 | hba->hba_id); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 90 | |
| 91 | return 0; |
| 92 | } |
| 93 | |
| 94 | static void pscsi_detach_hba(struct se_hba *hba) |
| 95 | { |
| 96 | struct pscsi_hba_virt *phv = hba->hba_ptr; |
| 97 | struct Scsi_Host *scsi_host = phv->phv_lld_host; |
| 98 | |
| 99 | if (scsi_host) { |
| 100 | scsi_host_put(scsi_host); |
| 101 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 102 | pr_debug("CORE_HBA[%d] - Detached SCSI HBA: %s from" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 103 | " Generic Target Core\n", hba->hba_id, |
| 104 | (scsi_host->hostt->name) ? (scsi_host->hostt->name) : |
| 105 | "Unknown"); |
| 106 | } else |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 107 | pr_debug("CORE_HBA[%d] - Detached Virtual SCSI HBA" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 108 | " from Generic Target Core\n", hba->hba_id); |
| 109 | |
| 110 | kfree(phv); |
| 111 | hba->hba_ptr = NULL; |
| 112 | } |
| 113 | |
| 114 | static int pscsi_pmode_enable_hba(struct se_hba *hba, unsigned long mode_flag) |
| 115 | { |
Jörn Engel | 8359cf4 | 2011-11-24 02:05:51 +0100 | [diff] [blame] | 116 | struct pscsi_hba_virt *phv = hba->hba_ptr; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 117 | struct Scsi_Host *sh = phv->phv_lld_host; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 118 | /* |
| 119 | * Release the struct Scsi_Host |
| 120 | */ |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 121 | if (!mode_flag) { |
| 122 | if (!sh) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 123 | return 0; |
| 124 | |
| 125 | phv->phv_lld_host = NULL; |
Stefan Hajnoczi | e6a8a41 | 2012-02-23 18:15:26 +0000 | [diff] [blame] | 126 | phv->phv_mode = PHV_VIRTUAL_HOST_ID; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 127 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 128 | pr_debug("CORE_HBA[%d] - Disabled pSCSI HBA Passthrough" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 129 | " %s\n", hba->hba_id, (sh->hostt->name) ? |
| 130 | (sh->hostt->name) : "Unknown"); |
| 131 | |
| 132 | scsi_host_put(sh); |
| 133 | return 0; |
| 134 | } |
| 135 | /* |
| 136 | * Otherwise, locate struct Scsi_Host from the original passed |
| 137 | * pSCSI Host ID and enable for phba mode |
| 138 | */ |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 139 | sh = scsi_host_lookup(phv->phv_host_id); |
| 140 | if (IS_ERR(sh)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 141 | pr_err("pSCSI: Unable to locate SCSI Host for" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 142 | " phv_host_id: %d\n", phv->phv_host_id); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 143 | return PTR_ERR(sh); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 144 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 145 | |
| 146 | phv->phv_lld_host = sh; |
| 147 | phv->phv_mode = PHV_LLD_SCSI_HOST_NO; |
| 148 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 149 | pr_debug("CORE_HBA[%d] - Enabled pSCSI HBA Passthrough %s\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 150 | hba->hba_id, (sh->hostt->name) ? (sh->hostt->name) : "Unknown"); |
| 151 | |
| 152 | return 1; |
| 153 | } |
| 154 | |
| 155 | static void pscsi_tape_read_blocksize(struct se_device *dev, |
| 156 | struct scsi_device *sdev) |
| 157 | { |
| 158 | unsigned char cdb[MAX_COMMAND_SIZE], *buf; |
| 159 | int ret; |
| 160 | |
| 161 | buf = kzalloc(12, GFP_KERNEL); |
| 162 | if (!buf) |
| 163 | return; |
| 164 | |
| 165 | memset(cdb, 0, MAX_COMMAND_SIZE); |
| 166 | cdb[0] = MODE_SENSE; |
| 167 | cdb[4] = 0x0c; /* 12 bytes */ |
| 168 | |
| 169 | ret = scsi_execute_req(sdev, cdb, DMA_FROM_DEVICE, buf, 12, NULL, |
| 170 | HZ, 1, NULL); |
| 171 | if (ret) |
| 172 | goto out_free; |
| 173 | |
| 174 | /* |
| 175 | * If MODE_SENSE still returns zero, set the default value to 1024. |
| 176 | */ |
| 177 | sdev->sector_size = (buf[9] << 16) | (buf[10] << 8) | (buf[11]); |
| 178 | if (!sdev->sector_size) |
| 179 | sdev->sector_size = 1024; |
| 180 | out_free: |
| 181 | kfree(buf); |
| 182 | } |
| 183 | |
| 184 | static void |
| 185 | pscsi_set_inquiry_info(struct scsi_device *sdev, struct t10_wwn *wwn) |
| 186 | { |
| 187 | unsigned char *buf; |
| 188 | |
| 189 | if (sdev->inquiry_len < INQUIRY_LEN) |
| 190 | return; |
| 191 | |
| 192 | buf = sdev->inquiry; |
| 193 | if (!buf) |
| 194 | return; |
| 195 | /* |
| 196 | * Use sdev->inquiry from drivers/scsi/scsi_scan.c:scsi_alloc_sdev() |
| 197 | */ |
| 198 | memcpy(&wwn->vendor[0], &buf[8], sizeof(wwn->vendor)); |
| 199 | memcpy(&wwn->model[0], &buf[16], sizeof(wwn->model)); |
| 200 | memcpy(&wwn->revision[0], &buf[32], sizeof(wwn->revision)); |
| 201 | } |
| 202 | |
| 203 | static int |
| 204 | pscsi_get_inquiry_vpd_serial(struct scsi_device *sdev, struct t10_wwn *wwn) |
| 205 | { |
| 206 | unsigned char cdb[MAX_COMMAND_SIZE], *buf; |
| 207 | int ret; |
| 208 | |
| 209 | buf = kzalloc(INQUIRY_VPD_SERIAL_LEN, GFP_KERNEL); |
| 210 | if (!buf) |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 211 | return -ENOMEM; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 212 | |
| 213 | memset(cdb, 0, MAX_COMMAND_SIZE); |
| 214 | cdb[0] = INQUIRY; |
| 215 | cdb[1] = 0x01; /* Query VPD */ |
| 216 | cdb[2] = 0x80; /* Unit Serial Number */ |
| 217 | cdb[3] = (INQUIRY_VPD_SERIAL_LEN >> 8) & 0xff; |
| 218 | cdb[4] = (INQUIRY_VPD_SERIAL_LEN & 0xff); |
| 219 | |
| 220 | ret = scsi_execute_req(sdev, cdb, DMA_FROM_DEVICE, buf, |
| 221 | INQUIRY_VPD_SERIAL_LEN, NULL, HZ, 1, NULL); |
| 222 | if (ret) |
| 223 | goto out_free; |
| 224 | |
| 225 | snprintf(&wwn->unit_serial[0], INQUIRY_VPD_SERIAL_LEN, "%s", &buf[4]); |
| 226 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 227 | wwn->t10_dev->dev_flags |= DF_FIRMWARE_VPD_UNIT_SERIAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 228 | |
| 229 | kfree(buf); |
| 230 | return 0; |
| 231 | |
| 232 | out_free: |
| 233 | kfree(buf); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 234 | return -EPERM; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 235 | } |
| 236 | |
| 237 | static void |
| 238 | pscsi_get_inquiry_vpd_device_ident(struct scsi_device *sdev, |
| 239 | struct t10_wwn *wwn) |
| 240 | { |
| 241 | unsigned char cdb[MAX_COMMAND_SIZE], *buf, *page_83; |
| 242 | int ident_len, page_len, off = 4, ret; |
| 243 | struct t10_vpd *vpd; |
| 244 | |
| 245 | buf = kzalloc(INQUIRY_VPD_SERIAL_LEN, GFP_KERNEL); |
| 246 | if (!buf) |
| 247 | return; |
| 248 | |
| 249 | memset(cdb, 0, MAX_COMMAND_SIZE); |
| 250 | cdb[0] = INQUIRY; |
| 251 | cdb[1] = 0x01; /* Query VPD */ |
| 252 | cdb[2] = 0x83; /* Device Identifier */ |
| 253 | cdb[3] = (INQUIRY_VPD_DEVICE_IDENTIFIER_LEN >> 8) & 0xff; |
| 254 | cdb[4] = (INQUIRY_VPD_DEVICE_IDENTIFIER_LEN & 0xff); |
| 255 | |
| 256 | ret = scsi_execute_req(sdev, cdb, DMA_FROM_DEVICE, buf, |
| 257 | INQUIRY_VPD_DEVICE_IDENTIFIER_LEN, |
| 258 | NULL, HZ, 1, NULL); |
| 259 | if (ret) |
| 260 | goto out; |
| 261 | |
| 262 | page_len = (buf[2] << 8) | buf[3]; |
| 263 | while (page_len > 0) { |
| 264 | /* Grab a pointer to the Identification descriptor */ |
| 265 | page_83 = &buf[off]; |
| 266 | ident_len = page_83[3]; |
| 267 | if (!ident_len) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 268 | pr_err("page_83[3]: identifier" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 269 | " length zero!\n"); |
| 270 | break; |
| 271 | } |
Masanari Iida | 35d1efe | 2012-08-16 22:43:13 +0900 | [diff] [blame] | 272 | pr_debug("T10 VPD Identifier Length: %d\n", ident_len); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 273 | |
| 274 | vpd = kzalloc(sizeof(struct t10_vpd), GFP_KERNEL); |
| 275 | if (!vpd) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 276 | pr_err("Unable to allocate memory for" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 277 | " struct t10_vpd\n"); |
| 278 | goto out; |
| 279 | } |
| 280 | INIT_LIST_HEAD(&vpd->vpd_list); |
| 281 | |
| 282 | transport_set_vpd_proto_id(vpd, page_83); |
| 283 | transport_set_vpd_assoc(vpd, page_83); |
| 284 | |
| 285 | if (transport_set_vpd_ident_type(vpd, page_83) < 0) { |
| 286 | off += (ident_len + 4); |
| 287 | page_len -= (ident_len + 4); |
| 288 | kfree(vpd); |
| 289 | continue; |
| 290 | } |
| 291 | if (transport_set_vpd_ident(vpd, page_83) < 0) { |
| 292 | off += (ident_len + 4); |
| 293 | page_len -= (ident_len + 4); |
| 294 | kfree(vpd); |
| 295 | continue; |
| 296 | } |
| 297 | |
| 298 | list_add_tail(&vpd->vpd_list, &wwn->t10_vpd_list); |
| 299 | off += (ident_len + 4); |
| 300 | page_len -= (ident_len + 4); |
| 301 | } |
| 302 | |
| 303 | out: |
| 304 | kfree(buf); |
| 305 | } |
| 306 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 307 | static int pscsi_add_device_to_list(struct se_device *dev, |
| 308 | struct scsi_device *sd) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 309 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 310 | struct pscsi_dev_virt *pdv = PSCSI_DEV(dev); |
| 311 | struct request_queue *q = sd->request_queue; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 312 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 313 | pdv->pdv_sd = sd; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 314 | |
| 315 | if (!sd->queue_depth) { |
| 316 | sd->queue_depth = PSCSI_DEFAULT_QUEUEDEPTH; |
| 317 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 318 | pr_err("Set broken SCSI Device %d:%d:%d" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 319 | " queue_depth to %d\n", sd->channel, sd->id, |
| 320 | sd->lun, sd->queue_depth); |
| 321 | } |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 322 | |
| 323 | dev->dev_attrib.hw_block_size = sd->sector_size; |
| 324 | dev->dev_attrib.hw_max_sectors = |
| 325 | min_t(int, sd->host->max_sectors, queue_max_hw_sectors(q)); |
| 326 | dev->dev_attrib.hw_queue_depth = sd->queue_depth; |
| 327 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 328 | /* |
| 329 | * Setup our standard INQUIRY info into se_dev->t10_wwn |
| 330 | */ |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 331 | pscsi_set_inquiry_info(sd, &dev->t10_wwn); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 332 | |
| 333 | /* |
| 334 | * Locate VPD WWN Information used for various purposes within |
| 335 | * the Storage Engine. |
| 336 | */ |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 337 | if (!pscsi_get_inquiry_vpd_serial(sd, &dev->t10_wwn)) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 338 | /* |
| 339 | * If VPD Unit Serial returned GOOD status, try |
| 340 | * VPD Device Identification page (0x83). |
| 341 | */ |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 342 | pscsi_get_inquiry_vpd_device_ident(sd, &dev->t10_wwn); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 343 | } |
| 344 | |
| 345 | /* |
| 346 | * For TYPE_TAPE, attempt to determine blocksize with MODE_SENSE. |
| 347 | */ |
| 348 | if (sd->type == TYPE_TAPE) |
| 349 | pscsi_tape_read_blocksize(dev, sd); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 350 | return 0; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 351 | } |
| 352 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 353 | static struct se_device *pscsi_alloc_device(struct se_hba *hba, |
| 354 | const char *name) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 355 | { |
| 356 | struct pscsi_dev_virt *pdv; |
| 357 | |
| 358 | pdv = kzalloc(sizeof(struct pscsi_dev_virt), GFP_KERNEL); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 359 | if (!pdv) { |
| 360 | pr_err("Unable to allocate memory for struct pscsi_dev_virt\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 361 | return NULL; |
| 362 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 363 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 364 | pr_debug("PSCSI: Allocated pdv: %p for %s\n", pdv, name); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 365 | return &pdv->dev; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 366 | } |
| 367 | |
| 368 | /* |
| 369 | * Called with struct Scsi_Host->host_lock called. |
| 370 | */ |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 371 | static int pscsi_create_type_disk(struct se_device *dev, struct scsi_device *sd) |
Dan Carpenter | 5dd7ed2e | 2011-03-14 04:06:01 -0700 | [diff] [blame] | 372 | __releases(sh->host_lock) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 373 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 374 | struct pscsi_hba_virt *phv = dev->se_hba->hba_ptr; |
| 375 | struct pscsi_dev_virt *pdv = PSCSI_DEV(dev); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 376 | struct Scsi_Host *sh = sd->host; |
| 377 | struct block_device *bd; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 378 | int ret; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 379 | |
| 380 | if (scsi_device_get(sd)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 381 | pr_err("scsi_device_get() failed for %d:%d:%d:%d\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 382 | sh->host_no, sd->channel, sd->id, sd->lun); |
| 383 | spin_unlock_irq(sh->host_lock); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 384 | return -EIO; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 385 | } |
| 386 | spin_unlock_irq(sh->host_lock); |
| 387 | /* |
| 388 | * Claim exclusive struct block_device access to struct scsi_device |
| 389 | * for TYPE_DISK using supplied udev_path |
| 390 | */ |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 391 | bd = blkdev_get_by_path(dev->udev_path, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 392 | FMODE_WRITE|FMODE_READ|FMODE_EXCL, pdv); |
Dan Carpenter | 3ae279d | 2011-02-09 15:34:36 -0800 | [diff] [blame] | 393 | if (IS_ERR(bd)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 394 | pr_err("pSCSI: blkdev_get_by_path() failed\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 395 | scsi_device_put(sd); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 396 | return PTR_ERR(bd); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 397 | } |
| 398 | pdv->pdv_bd = bd; |
| 399 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 400 | ret = pscsi_add_device_to_list(dev, sd); |
| 401 | if (ret) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 402 | blkdev_put(pdv->pdv_bd, FMODE_WRITE|FMODE_READ|FMODE_EXCL); |
| 403 | scsi_device_put(sd); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 404 | return ret; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 405 | } |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 406 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 407 | pr_debug("CORE_PSCSI[%d] - Added TYPE_DISK for %d:%d:%d:%d\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 408 | phv->phv_host_id, sh->host_no, sd->channel, sd->id, sd->lun); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 409 | return 0; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 410 | } |
| 411 | |
| 412 | /* |
| 413 | * Called with struct Scsi_Host->host_lock called. |
| 414 | */ |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 415 | static int pscsi_create_type_rom(struct se_device *dev, struct scsi_device *sd) |
Dan Carpenter | 5dd7ed2e | 2011-03-14 04:06:01 -0700 | [diff] [blame] | 416 | __releases(sh->host_lock) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 417 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 418 | struct pscsi_hba_virt *phv = dev->se_hba->hba_ptr; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 419 | struct Scsi_Host *sh = sd->host; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 420 | int ret; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 421 | |
| 422 | if (scsi_device_get(sd)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 423 | pr_err("scsi_device_get() failed for %d:%d:%d:%d\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 424 | sh->host_no, sd->channel, sd->id, sd->lun); |
| 425 | spin_unlock_irq(sh->host_lock); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 426 | return -EIO; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 427 | } |
| 428 | spin_unlock_irq(sh->host_lock); |
| 429 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 430 | ret = pscsi_add_device_to_list(dev, sd); |
| 431 | if (ret) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 432 | scsi_device_put(sd); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 433 | return ret; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 434 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 435 | pr_debug("CORE_PSCSI[%d] - Added Type: %s for %d:%d:%d:%d\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 436 | phv->phv_host_id, scsi_device_type(sd->type), sh->host_no, |
| 437 | sd->channel, sd->id, sd->lun); |
| 438 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 439 | return 0; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 440 | } |
| 441 | |
| 442 | /* |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 443 | * Called with struct Scsi_Host->host_lock called. |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 444 | */ |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 445 | static int pscsi_create_type_other(struct se_device *dev, |
| 446 | struct scsi_device *sd) |
Dan Carpenter | 5dd7ed2e | 2011-03-14 04:06:01 -0700 | [diff] [blame] | 447 | __releases(sh->host_lock) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 448 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 449 | struct pscsi_hba_virt *phv = dev->se_hba->hba_ptr; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 450 | struct Scsi_Host *sh = sd->host; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 451 | int ret; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 452 | |
| 453 | spin_unlock_irq(sh->host_lock); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 454 | ret = pscsi_add_device_to_list(dev, sd); |
| 455 | if (ret) |
| 456 | return ret; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 457 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 458 | pr_debug("CORE_PSCSI[%d] - Added Type: %s for %d:%d:%d:%d\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 459 | phv->phv_host_id, scsi_device_type(sd->type), sh->host_no, |
| 460 | sd->channel, sd->id, sd->lun); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 461 | return 0; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 462 | } |
| 463 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 464 | int pscsi_configure_device(struct se_device *dev) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 465 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 466 | struct se_hba *hba = dev->se_hba; |
| 467 | struct pscsi_dev_virt *pdv = PSCSI_DEV(dev); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 468 | struct scsi_device *sd; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 469 | struct pscsi_hba_virt *phv = dev->se_hba->hba_ptr; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 470 | struct Scsi_Host *sh = phv->phv_lld_host; |
| 471 | int legacy_mode_enable = 0; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 472 | int ret; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 473 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 474 | if (!(pdv->pdv_flags & PDF_HAS_CHANNEL_ID) || |
| 475 | !(pdv->pdv_flags & PDF_HAS_TARGET_ID) || |
| 476 | !(pdv->pdv_flags & PDF_HAS_LUN_ID)) { |
| 477 | pr_err("Missing scsi_channel_id=, scsi_target_id= and" |
| 478 | " scsi_lun_id= parameters\n"); |
| 479 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 480 | } |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 481 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 482 | /* |
| 483 | * If not running in PHV_LLD_SCSI_HOST_NO mode, locate the |
| 484 | * struct Scsi_Host we will need to bring the TCM/pSCSI object online |
| 485 | */ |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 486 | if (!sh) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 487 | if (phv->phv_mode == PHV_LLD_SCSI_HOST_NO) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 488 | pr_err("pSCSI: Unable to locate struct" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 489 | " Scsi_Host for PHV_LLD_SCSI_HOST_NO\n"); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 490 | return -ENODEV; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 491 | } |
| 492 | /* |
Stefan Hajnoczi | e6a8a41 | 2012-02-23 18:15:26 +0000 | [diff] [blame] | 493 | * For the newer PHV_VIRTUAL_HOST_ID struct scsi_device |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 494 | * reference, we enforce that udev_path has been set |
| 495 | */ |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 496 | if (!(dev->dev_flags & DF_USING_UDEV_PATH)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 497 | pr_err("pSCSI: udev_path attribute has not" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 498 | " been set before ENABLE=1\n"); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 499 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 500 | } |
| 501 | /* |
Stefan Hajnoczi | e6a8a41 | 2012-02-23 18:15:26 +0000 | [diff] [blame] | 502 | * If no scsi_host_id= was passed for PHV_VIRTUAL_HOST_ID, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 503 | * use the original TCM hba ID to reference Linux/SCSI Host No |
| 504 | * and enable for PHV_LLD_SCSI_HOST_NO mode. |
| 505 | */ |
| 506 | if (!(pdv->pdv_flags & PDF_HAS_VIRT_HOST_ID)) { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 507 | if (hba->dev_count) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 508 | pr_err("pSCSI: Unable to set hba_mode" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 509 | " with active devices\n"); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 510 | return -EEXIST; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 511 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 512 | |
| 513 | if (pscsi_pmode_enable_hba(hba, 1) != 1) |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 514 | return -ENODEV; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 515 | |
| 516 | legacy_mode_enable = 1; |
| 517 | hba->hba_flags |= HBA_FLAGS_PSCSI_MODE; |
| 518 | sh = phv->phv_lld_host; |
| 519 | } else { |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 520 | sh = scsi_host_lookup(pdv->pdv_host_id); |
| 521 | if (IS_ERR(sh)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 522 | pr_err("pSCSI: Unable to locate" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 523 | " pdv_host_id: %d\n", pdv->pdv_host_id); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 524 | return PTR_ERR(sh); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 525 | } |
| 526 | } |
| 527 | } else { |
Stefan Hajnoczi | e6a8a41 | 2012-02-23 18:15:26 +0000 | [diff] [blame] | 528 | if (phv->phv_mode == PHV_VIRTUAL_HOST_ID) { |
| 529 | pr_err("pSCSI: PHV_VIRTUAL_HOST_ID set while" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 530 | " struct Scsi_Host exists\n"); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 531 | return -EEXIST; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 532 | } |
| 533 | } |
| 534 | |
| 535 | spin_lock_irq(sh->host_lock); |
| 536 | list_for_each_entry(sd, &sh->__devices, siblings) { |
| 537 | if ((pdv->pdv_channel_id != sd->channel) || |
| 538 | (pdv->pdv_target_id != sd->id) || |
| 539 | (pdv->pdv_lun_id != sd->lun)) |
| 540 | continue; |
| 541 | /* |
| 542 | * Functions will release the held struct scsi_host->host_lock |
| 543 | * before calling calling pscsi_add_device_to_list() to register |
| 544 | * struct scsi_device with target_core_mod. |
| 545 | */ |
| 546 | switch (sd->type) { |
| 547 | case TYPE_DISK: |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 548 | ret = pscsi_create_type_disk(dev, sd); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 549 | break; |
| 550 | case TYPE_ROM: |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 551 | ret = pscsi_create_type_rom(dev, sd); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 552 | break; |
| 553 | default: |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 554 | ret = pscsi_create_type_other(dev, sd); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 555 | break; |
| 556 | } |
| 557 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 558 | if (ret) { |
Stefan Hajnoczi | e6a8a41 | 2012-02-23 18:15:26 +0000 | [diff] [blame] | 559 | if (phv->phv_mode == PHV_VIRTUAL_HOST_ID) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 560 | scsi_host_put(sh); |
| 561 | else if (legacy_mode_enable) { |
| 562 | pscsi_pmode_enable_hba(hba, 0); |
| 563 | hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE; |
| 564 | } |
| 565 | pdv->pdv_sd = NULL; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 566 | return ret; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 567 | } |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 568 | return 0; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 569 | } |
| 570 | spin_unlock_irq(sh->host_lock); |
| 571 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 572 | pr_err("pSCSI: Unable to locate %d:%d:%d:%d\n", sh->host_no, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 573 | pdv->pdv_channel_id, pdv->pdv_target_id, pdv->pdv_lun_id); |
| 574 | |
Stefan Hajnoczi | e6a8a41 | 2012-02-23 18:15:26 +0000 | [diff] [blame] | 575 | if (phv->phv_mode == PHV_VIRTUAL_HOST_ID) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 576 | scsi_host_put(sh); |
| 577 | else if (legacy_mode_enable) { |
| 578 | pscsi_pmode_enable_hba(hba, 0); |
| 579 | hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE; |
| 580 | } |
| 581 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 582 | return -ENODEV; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 583 | } |
| 584 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 585 | static void pscsi_free_device(struct se_device *dev) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 586 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 587 | struct pscsi_dev_virt *pdv = PSCSI_DEV(dev); |
| 588 | struct pscsi_hba_virt *phv = dev->se_hba->hba_ptr; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 589 | struct scsi_device *sd = pdv->pdv_sd; |
| 590 | |
| 591 | if (sd) { |
| 592 | /* |
| 593 | * Release exclusive pSCSI internal struct block_device claim for |
| 594 | * struct scsi_device with TYPE_DISK from pscsi_create_type_disk() |
| 595 | */ |
| 596 | if ((sd->type == TYPE_DISK) && pdv->pdv_bd) { |
| 597 | blkdev_put(pdv->pdv_bd, |
| 598 | FMODE_WRITE|FMODE_READ|FMODE_EXCL); |
| 599 | pdv->pdv_bd = NULL; |
| 600 | } |
| 601 | /* |
| 602 | * For HBA mode PHV_LLD_SCSI_HOST_NO, release the reference |
| 603 | * to struct Scsi_Host now. |
| 604 | */ |
| 605 | if ((phv->phv_mode == PHV_LLD_SCSI_HOST_NO) && |
| 606 | (phv->phv_lld_host != NULL)) |
| 607 | scsi_host_put(phv->phv_lld_host); |
| 608 | |
| 609 | if ((sd->type == TYPE_DISK) || (sd->type == TYPE_ROM)) |
| 610 | scsi_device_put(sd); |
| 611 | |
| 612 | pdv->pdv_sd = NULL; |
| 613 | } |
| 614 | |
| 615 | kfree(pdv); |
| 616 | } |
| 617 | |
Paolo Bonzini | d5829ea | 2012-09-05 17:09:15 +0200 | [diff] [blame] | 618 | static void pscsi_transport_complete(struct se_cmd *cmd, struct scatterlist *sg, |
| 619 | unsigned char *sense_buffer) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 620 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 621 | struct pscsi_dev_virt *pdv = PSCSI_DEV(cmd->se_dev); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 622 | struct scsi_device *sd = pdv->pdv_sd; |
| 623 | int result; |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 624 | struct pscsi_plugin_task *pt = cmd->priv; |
Nicholas Bellinger | 1d2a2cd | 2012-08-08 00:14:13 +0000 | [diff] [blame] | 625 | unsigned char *cdb; |
| 626 | /* |
| 627 | * Special case for REPORT_LUNs handling where pscsi_plugin_task has |
| 628 | * not been allocated because TCM is handling the emulation directly. |
| 629 | */ |
| 630 | if (!pt) |
Paolo Bonzini | d5829ea | 2012-09-05 17:09:15 +0200 | [diff] [blame] | 631 | return; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 632 | |
Nicholas Bellinger | 1d2a2cd | 2012-08-08 00:14:13 +0000 | [diff] [blame] | 633 | cdb = &pt->pscsi_cdb[0]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 634 | result = pt->pscsi_result; |
| 635 | /* |
| 636 | * Hack to make sure that Write-Protect modepage is set if R/O mode is |
| 637 | * forced. |
| 638 | */ |
Paolo Bonzini | 306c11b | 2012-09-07 17:30:32 +0200 | [diff] [blame] | 639 | if (!cmd->se_deve || !cmd->data_length) |
| 640 | goto after_mode_sense; |
| 641 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 642 | if (((cdb[0] == MODE_SENSE) || (cdb[0] == MODE_SENSE_10)) && |
| 643 | (status_byte(result) << 1) == SAM_STAT_GOOD) { |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 644 | if (cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY) { |
| 645 | unsigned char *buf = transport_kmap_data_sg(cmd); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 646 | |
| 647 | if (cdb[0] == MODE_SENSE_10) { |
| 648 | if (!(buf[3] & 0x80)) |
| 649 | buf[3] |= 0x80; |
| 650 | } else { |
| 651 | if (!(buf[2] & 0x80)) |
| 652 | buf[2] |= 0x80; |
| 653 | } |
Andy Grover | 05d1c7c | 2011-07-20 19:13:28 +0000 | [diff] [blame] | 654 | |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 655 | transport_kunmap_data_sg(cmd); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 656 | } |
| 657 | } |
| 658 | after_mode_sense: |
| 659 | |
Paolo Bonzini | 306c11b | 2012-09-07 17:30:32 +0200 | [diff] [blame] | 660 | if (sd->type != TYPE_TAPE || !cmd->data_length) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 661 | goto after_mode_select; |
| 662 | |
| 663 | /* |
| 664 | * Hack to correctly obtain the initiator requested blocksize for |
| 665 | * TYPE_TAPE. Since this value is dependent upon each tape media, |
| 666 | * struct scsi_device->sector_size will not contain the correct value |
| 667 | * by default, so we go ahead and set it so |
| 668 | * TRANSPORT(dev)->get_blockdev() returns the correct value to the |
| 669 | * storage engine. |
| 670 | */ |
| 671 | if (((cdb[0] == MODE_SELECT) || (cdb[0] == MODE_SELECT_10)) && |
| 672 | (status_byte(result) << 1) == SAM_STAT_GOOD) { |
| 673 | unsigned char *buf; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 674 | u16 bdl; |
| 675 | u32 blocksize; |
| 676 | |
| 677 | buf = sg_virt(&sg[0]); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 678 | if (!buf) { |
| 679 | pr_err("Unable to get buf for scatterlist\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 680 | goto after_mode_select; |
| 681 | } |
| 682 | |
| 683 | if (cdb[0] == MODE_SELECT) |
| 684 | bdl = (buf[3]); |
| 685 | else |
| 686 | bdl = (buf[6] << 8) | (buf[7]); |
| 687 | |
| 688 | if (!bdl) |
| 689 | goto after_mode_select; |
| 690 | |
| 691 | if (cdb[0] == MODE_SELECT) |
| 692 | blocksize = (buf[9] << 16) | (buf[10] << 8) | |
| 693 | (buf[11]); |
| 694 | else |
| 695 | blocksize = (buf[13] << 16) | (buf[14] << 8) | |
| 696 | (buf[15]); |
| 697 | |
| 698 | sd->sector_size = blocksize; |
| 699 | } |
| 700 | after_mode_select: |
| 701 | |
Paolo Bonzini | d5829ea | 2012-09-05 17:09:15 +0200 | [diff] [blame] | 702 | if (sense_buffer && (status_byte(result) & CHECK_CONDITION)) { |
| 703 | memcpy(sense_buffer, pt->pscsi_sense, TRANSPORT_SENSE_BUFFER); |
| 704 | cmd->se_cmd_flags |= SCF_TRANSPORT_TASK_SENSE; |
| 705 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 706 | } |
| 707 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 708 | enum { |
| 709 | Opt_scsi_host_id, Opt_scsi_channel_id, Opt_scsi_target_id, |
| 710 | Opt_scsi_lun_id, Opt_err |
| 711 | }; |
| 712 | |
| 713 | static match_table_t tokens = { |
| 714 | {Opt_scsi_host_id, "scsi_host_id=%d"}, |
| 715 | {Opt_scsi_channel_id, "scsi_channel_id=%d"}, |
| 716 | {Opt_scsi_target_id, "scsi_target_id=%d"}, |
| 717 | {Opt_scsi_lun_id, "scsi_lun_id=%d"}, |
| 718 | {Opt_err, NULL} |
| 719 | }; |
| 720 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 721 | static ssize_t pscsi_set_configfs_dev_params(struct se_device *dev, |
| 722 | const char *page, ssize_t count) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 723 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 724 | struct pscsi_dev_virt *pdv = PSCSI_DEV(dev); |
| 725 | struct pscsi_hba_virt *phv = dev->se_hba->hba_ptr; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 726 | char *orig, *ptr, *opts; |
| 727 | substring_t args[MAX_OPT_ARGS]; |
| 728 | int ret = 0, arg, token; |
| 729 | |
| 730 | opts = kstrdup(page, GFP_KERNEL); |
| 731 | if (!opts) |
| 732 | return -ENOMEM; |
| 733 | |
| 734 | orig = opts; |
| 735 | |
Sebastian Andrzej Siewior | 90c161b | 2011-11-23 20:53:17 +0100 | [diff] [blame] | 736 | while ((ptr = strsep(&opts, ",\n")) != NULL) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 737 | if (!*ptr) |
| 738 | continue; |
| 739 | |
| 740 | token = match_token(ptr, tokens, args); |
| 741 | switch (token) { |
| 742 | case Opt_scsi_host_id: |
| 743 | if (phv->phv_mode == PHV_LLD_SCSI_HOST_NO) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 744 | pr_err("PSCSI[%d]: Unable to accept" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 745 | " scsi_host_id while phv_mode ==" |
| 746 | " PHV_LLD_SCSI_HOST_NO\n", |
| 747 | phv->phv_host_id); |
| 748 | ret = -EINVAL; |
| 749 | goto out; |
| 750 | } |
| 751 | match_int(args, &arg); |
| 752 | pdv->pdv_host_id = arg; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 753 | pr_debug("PSCSI[%d]: Referencing SCSI Host ID:" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 754 | " %d\n", phv->phv_host_id, pdv->pdv_host_id); |
| 755 | pdv->pdv_flags |= PDF_HAS_VIRT_HOST_ID; |
| 756 | break; |
| 757 | case Opt_scsi_channel_id: |
| 758 | match_int(args, &arg); |
| 759 | pdv->pdv_channel_id = arg; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 760 | pr_debug("PSCSI[%d]: Referencing SCSI Channel" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 761 | " ID: %d\n", phv->phv_host_id, |
| 762 | pdv->pdv_channel_id); |
| 763 | pdv->pdv_flags |= PDF_HAS_CHANNEL_ID; |
| 764 | break; |
| 765 | case Opt_scsi_target_id: |
| 766 | match_int(args, &arg); |
| 767 | pdv->pdv_target_id = arg; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 768 | pr_debug("PSCSI[%d]: Referencing SCSI Target" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 769 | " ID: %d\n", phv->phv_host_id, |
| 770 | pdv->pdv_target_id); |
| 771 | pdv->pdv_flags |= PDF_HAS_TARGET_ID; |
| 772 | break; |
| 773 | case Opt_scsi_lun_id: |
| 774 | match_int(args, &arg); |
| 775 | pdv->pdv_lun_id = arg; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 776 | pr_debug("PSCSI[%d]: Referencing SCSI LUN ID:" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 777 | " %d\n", phv->phv_host_id, pdv->pdv_lun_id); |
| 778 | pdv->pdv_flags |= PDF_HAS_LUN_ID; |
| 779 | break; |
| 780 | default: |
| 781 | break; |
| 782 | } |
| 783 | } |
| 784 | |
| 785 | out: |
| 786 | kfree(orig); |
| 787 | return (!ret) ? count : ret; |
| 788 | } |
| 789 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 790 | static ssize_t pscsi_show_configfs_dev_params(struct se_device *dev, char *b) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 791 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 792 | struct pscsi_hba_virt *phv = dev->se_hba->hba_ptr; |
| 793 | struct pscsi_dev_virt *pdv = PSCSI_DEV(dev); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 794 | struct scsi_device *sd = pdv->pdv_sd; |
| 795 | unsigned char host_id[16]; |
| 796 | ssize_t bl; |
| 797 | int i; |
| 798 | |
Stefan Hajnoczi | e6a8a41 | 2012-02-23 18:15:26 +0000 | [diff] [blame] | 799 | if (phv->phv_mode == PHV_VIRTUAL_HOST_ID) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 800 | snprintf(host_id, 16, "%d", pdv->pdv_host_id); |
| 801 | else |
| 802 | snprintf(host_id, 16, "PHBA Mode"); |
| 803 | |
| 804 | bl = sprintf(b, "SCSI Device Bus Location:" |
| 805 | " Channel ID: %d Target ID: %d LUN: %d Host ID: %s\n", |
| 806 | pdv->pdv_channel_id, pdv->pdv_target_id, pdv->pdv_lun_id, |
| 807 | host_id); |
| 808 | |
| 809 | if (sd) { |
| 810 | bl += sprintf(b + bl, " "); |
| 811 | bl += sprintf(b + bl, "Vendor: "); |
| 812 | for (i = 0; i < 8; i++) { |
| 813 | if (ISPRINT(sd->vendor[i])) /* printable character? */ |
| 814 | bl += sprintf(b + bl, "%c", sd->vendor[i]); |
| 815 | else |
| 816 | bl += sprintf(b + bl, " "); |
| 817 | } |
| 818 | bl += sprintf(b + bl, " Model: "); |
| 819 | for (i = 0; i < 16; i++) { |
| 820 | if (ISPRINT(sd->model[i])) /* printable character ? */ |
| 821 | bl += sprintf(b + bl, "%c", sd->model[i]); |
| 822 | else |
| 823 | bl += sprintf(b + bl, " "); |
| 824 | } |
| 825 | bl += sprintf(b + bl, " Rev: "); |
| 826 | for (i = 0; i < 4; i++) { |
| 827 | if (ISPRINT(sd->rev[i])) /* printable character ? */ |
| 828 | bl += sprintf(b + bl, "%c", sd->rev[i]); |
| 829 | else |
| 830 | bl += sprintf(b + bl, " "); |
| 831 | } |
| 832 | bl += sprintf(b + bl, "\n"); |
| 833 | } |
| 834 | return bl; |
| 835 | } |
| 836 | |
| 837 | static void pscsi_bi_endio(struct bio *bio, int error) |
| 838 | { |
| 839 | bio_put(bio); |
| 840 | } |
| 841 | |
Andy Grover | a1d8b49 | 2011-05-02 17:12:10 -0700 | [diff] [blame] | 842 | static inline struct bio *pscsi_get_bio(int sg_num) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 843 | { |
| 844 | struct bio *bio; |
| 845 | /* |
| 846 | * Use bio_malloc() following the comment in for bio -> struct request |
| 847 | * in block/blk-core.c:blk_make_request() |
| 848 | */ |
| 849 | bio = bio_kmalloc(GFP_KERNEL, sg_num); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 850 | if (!bio) { |
| 851 | pr_err("PSCSI: bio_kmalloc() failed\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 852 | return NULL; |
| 853 | } |
| 854 | bio->bi_end_io = pscsi_bi_endio; |
| 855 | |
| 856 | return bio; |
| 857 | } |
| 858 | |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 859 | static int pscsi_map_sg(struct se_cmd *cmd, struct scatterlist *sgl, |
| 860 | u32 sgl_nents, enum dma_data_direction data_direction, |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 861 | struct bio **hbio) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 862 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 863 | struct pscsi_dev_virt *pdv = PSCSI_DEV(cmd->se_dev); |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 864 | struct bio *bio = NULL, *tbio = NULL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 865 | struct page *page; |
| 866 | struct scatterlist *sg; |
Christoph Hellwig | 7a83aa4 | 2012-04-23 11:35:31 -0400 | [diff] [blame] | 867 | u32 data_len = cmd->data_length, i, len, bytes, off; |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 868 | int nr_pages = (cmd->data_length + sgl[0].offset + |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 869 | PAGE_SIZE - 1) >> PAGE_SHIFT; |
Nicholas Bellinger | 03e98c9 | 2011-11-04 02:36:16 -0700 | [diff] [blame] | 870 | int nr_vecs = 0, rc; |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 871 | int rw = (data_direction == DMA_TO_DEVICE); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 872 | |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 873 | *hbio = NULL; |
| 874 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 875 | pr_debug("PSCSI: nr_pages: %d\n", nr_pages); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 876 | |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 877 | for_each_sg(sgl, sg, sgl_nents, i) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 878 | page = sg_page(sg); |
| 879 | off = sg->offset; |
| 880 | len = sg->length; |
| 881 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 882 | pr_debug("PSCSI: i: %d page: %p len: %d off: %d\n", i, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 883 | page, len, off); |
| 884 | |
| 885 | while (len > 0 && data_len > 0) { |
| 886 | bytes = min_t(unsigned int, len, PAGE_SIZE - off); |
| 887 | bytes = min(bytes, data_len); |
| 888 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 889 | if (!bio) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 890 | nr_vecs = min_t(int, BIO_MAX_PAGES, nr_pages); |
| 891 | nr_pages -= nr_vecs; |
| 892 | /* |
| 893 | * Calls bio_kmalloc() and sets bio->bi_end_io() |
| 894 | */ |
Andy Grover | a1d8b49 | 2011-05-02 17:12:10 -0700 | [diff] [blame] | 895 | bio = pscsi_get_bio(nr_vecs); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 896 | if (!bio) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 897 | goto fail; |
| 898 | |
| 899 | if (rw) |
| 900 | bio->bi_rw |= REQ_WRITE; |
| 901 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 902 | pr_debug("PSCSI: Allocated bio: %p," |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 903 | " dir: %s nr_vecs: %d\n", bio, |
| 904 | (rw) ? "rw" : "r", nr_vecs); |
| 905 | /* |
| 906 | * Set *hbio pointer to handle the case: |
| 907 | * nr_pages > BIO_MAX_PAGES, where additional |
| 908 | * bios need to be added to complete a given |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 909 | * command. |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 910 | */ |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 911 | if (!*hbio) |
| 912 | *hbio = tbio = bio; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 913 | else |
| 914 | tbio = tbio->bi_next = bio; |
| 915 | } |
| 916 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 917 | pr_debug("PSCSI: Calling bio_add_pc_page() i: %d" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 918 | " bio: %p page: %p len: %d off: %d\n", i, bio, |
| 919 | page, len, off); |
| 920 | |
| 921 | rc = bio_add_pc_page(pdv->pdv_sd->request_queue, |
| 922 | bio, page, bytes, off); |
| 923 | if (rc != bytes) |
| 924 | goto fail; |
| 925 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 926 | pr_debug("PSCSI: bio->bi_vcnt: %d nr_vecs: %d\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 927 | bio->bi_vcnt, nr_vecs); |
| 928 | |
| 929 | if (bio->bi_vcnt > nr_vecs) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 930 | pr_debug("PSCSI: Reached bio->bi_vcnt max:" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 931 | " %d i: %d bio: %p, allocating another" |
| 932 | " bio\n", bio->bi_vcnt, i, bio); |
| 933 | /* |
| 934 | * Clear the pointer so that another bio will |
| 935 | * be allocated with pscsi_get_bio() above, the |
| 936 | * current bio has already been set *tbio and |
| 937 | * bio->bi_next. |
| 938 | */ |
| 939 | bio = NULL; |
| 940 | } |
| 941 | |
| 942 | page++; |
| 943 | len -= bytes; |
| 944 | data_len -= bytes; |
| 945 | off = 0; |
| 946 | } |
| 947 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 948 | |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 949 | return sgl_nents; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 950 | fail: |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 951 | while (*hbio) { |
| 952 | bio = *hbio; |
| 953 | *hbio = (*hbio)->bi_next; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 954 | bio->bi_next = NULL; |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 955 | bio_endio(bio, 0); /* XXX: should be error */ |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 956 | } |
Nicholas Bellinger | 03e98c9 | 2011-11-04 02:36:16 -0700 | [diff] [blame] | 957 | cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; |
| 958 | return -ENOMEM; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 959 | } |
| 960 | |
Christoph Hellwig | 3d6d720 | 2012-05-20 11:59:17 -0400 | [diff] [blame] | 961 | /* |
| 962 | * Clear a lun set in the cdb if the initiator talking to use spoke |
| 963 | * and old standards version, as we can't assume the underlying device |
| 964 | * won't choke up on it. |
| 965 | */ |
| 966 | static inline void pscsi_clear_cdb_lun(unsigned char *cdb) |
| 967 | { |
| 968 | switch (cdb[0]) { |
| 969 | case READ_10: /* SBC - RDProtect */ |
| 970 | case READ_12: /* SBC - RDProtect */ |
| 971 | case READ_16: /* SBC - RDProtect */ |
| 972 | case SEND_DIAGNOSTIC: /* SPC - SELF-TEST Code */ |
| 973 | case VERIFY: /* SBC - VRProtect */ |
| 974 | case VERIFY_16: /* SBC - VRProtect */ |
| 975 | case WRITE_VERIFY: /* SBC - VRProtect */ |
| 976 | case WRITE_VERIFY_12: /* SBC - VRProtect */ |
| 977 | case MAINTENANCE_IN: /* SPC - Parameter Data Format for SA RTPG */ |
| 978 | break; |
| 979 | default: |
| 980 | cdb[1] &= 0x1f; /* clear logical unit number */ |
| 981 | break; |
| 982 | } |
| 983 | } |
| 984 | |
Christoph Hellwig | 1fd032e | 2012-05-20 11:59:15 -0400 | [diff] [blame] | 985 | static int pscsi_parse_cdb(struct se_cmd *cmd) |
Christoph Hellwig | d6e0175 | 2012-05-20 11:59:14 -0400 | [diff] [blame] | 986 | { |
Christoph Hellwig | d6e0175 | 2012-05-20 11:59:14 -0400 | [diff] [blame] | 987 | unsigned char *cdb = cmd->t_task_cdb; |
Christoph Hellwig | 1fd032e | 2012-05-20 11:59:15 -0400 | [diff] [blame] | 988 | unsigned int dummy_size; |
Christoph Hellwig | d6e0175 | 2012-05-20 11:59:14 -0400 | [diff] [blame] | 989 | int ret; |
| 990 | |
Christoph Hellwig | 1fd032e | 2012-05-20 11:59:15 -0400 | [diff] [blame] | 991 | if (cmd->se_cmd_flags & SCF_BIDI) { |
| 992 | cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; |
| 993 | cmd->scsi_sense_reason = TCM_UNSUPPORTED_SCSI_OPCODE; |
| 994 | return -EINVAL; |
Christoph Hellwig | d6e0175 | 2012-05-20 11:59:14 -0400 | [diff] [blame] | 995 | } |
| 996 | |
Christoph Hellwig | 3d6d720 | 2012-05-20 11:59:17 -0400 | [diff] [blame] | 997 | pscsi_clear_cdb_lun(cdb); |
| 998 | |
Christoph Hellwig | 1fd032e | 2012-05-20 11:59:15 -0400 | [diff] [blame] | 999 | /* |
Nicholas Bellinger | a3785c8 | 2012-05-30 14:47:18 -0700 | [diff] [blame] | 1000 | * For REPORT LUNS we always need to emulate the response, for everything |
| 1001 | * else the default for pSCSI is to pass the command to the underlying |
| 1002 | * LLD / physical hardware. |
Christoph Hellwig | 1fd032e | 2012-05-20 11:59:15 -0400 | [diff] [blame] | 1003 | */ |
| 1004 | switch (cdb[0]) { |
| 1005 | case REPORT_LUNS: |
Christoph Hellwig | 1fd032e | 2012-05-20 11:59:15 -0400 | [diff] [blame] | 1006 | ret = spc_parse_cdb(cmd, &dummy_size); |
| 1007 | if (ret) |
| 1008 | return ret; |
| 1009 | break; |
| 1010 | case READ_6: |
| 1011 | case READ_10: |
| 1012 | case READ_12: |
| 1013 | case READ_16: |
| 1014 | case WRITE_6: |
| 1015 | case WRITE_10: |
| 1016 | case WRITE_12: |
| 1017 | case WRITE_16: |
| 1018 | case WRITE_VERIFY: |
| 1019 | cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB; |
Christoph Hellwig | 0c2ad7d | 2012-06-17 18:40:52 -0400 | [diff] [blame] | 1020 | /* FALLTHROUGH*/ |
Christoph Hellwig | 1fd032e | 2012-05-20 11:59:15 -0400 | [diff] [blame] | 1021 | default: |
Christoph Hellwig | 0c2ad7d | 2012-06-17 18:40:52 -0400 | [diff] [blame] | 1022 | cmd->execute_cmd = pscsi_execute_cmd; |
Christoph Hellwig | 1fd032e | 2012-05-20 11:59:15 -0400 | [diff] [blame] | 1023 | break; |
Christoph Hellwig | d6e0175 | 2012-05-20 11:59:14 -0400 | [diff] [blame] | 1024 | } |
| 1025 | |
| 1026 | return 0; |
Christoph Hellwig | d6e0175 | 2012-05-20 11:59:14 -0400 | [diff] [blame] | 1027 | } |
| 1028 | |
Christoph Hellwig | 0c2ad7d | 2012-06-17 18:40:52 -0400 | [diff] [blame] | 1029 | static int pscsi_execute_cmd(struct se_cmd *cmd) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1030 | { |
Christoph Hellwig | 0c2ad7d | 2012-06-17 18:40:52 -0400 | [diff] [blame] | 1031 | struct scatterlist *sgl = cmd->t_data_sg; |
| 1032 | u32 sgl_nents = cmd->t_data_nents; |
| 1033 | enum dma_data_direction data_direction = cmd->data_direction; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 1034 | struct pscsi_dev_virt *pdv = PSCSI_DEV(cmd->se_dev); |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1035 | struct pscsi_plugin_task *pt; |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 1036 | struct request *req; |
| 1037 | struct bio *hbio; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1038 | int ret; |
| 1039 | |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1040 | /* |
| 1041 | * Dynamically alloc cdb space, since it may be larger than |
| 1042 | * TCM_MAX_COMMAND_SIZE |
| 1043 | */ |
| 1044 | pt = kzalloc(sizeof(*pt) + scsi_command_size(cmd->t_task_cdb), GFP_KERNEL); |
| 1045 | if (!pt) { |
| 1046 | cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; |
| 1047 | return -ENOMEM; |
| 1048 | } |
| 1049 | cmd->priv = pt; |
| 1050 | |
Christoph Hellwig | ed3102c | 2012-04-23 11:35:29 -0400 | [diff] [blame] | 1051 | memcpy(pt->pscsi_cdb, cmd->t_task_cdb, |
| 1052 | scsi_command_size(cmd->t_task_cdb)); |
Christoph Hellwig | 485fd0d | 2011-10-12 11:09:12 -0400 | [diff] [blame] | 1053 | |
Christoph Hellwig | 64f1db3 | 2012-05-20 11:59:11 -0400 | [diff] [blame] | 1054 | if (!sgl) { |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 1055 | req = blk_get_request(pdv->pdv_sd->request_queue, |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1056 | (data_direction == DMA_TO_DEVICE), |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 1057 | GFP_KERNEL); |
| 1058 | if (!req || IS_ERR(req)) { |
| 1059 | pr_err("PSCSI: blk_get_request() failed: %ld\n", |
| 1060 | req ? IS_ERR(req) : -ENOMEM); |
Nicholas Bellinger | 03e98c9 | 2011-11-04 02:36:16 -0700 | [diff] [blame] | 1061 | cmd->scsi_sense_reason = |
| 1062 | TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1063 | goto fail; |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 1064 | } |
| 1065 | } else { |
Christoph Hellwig | 7a83aa4 | 2012-04-23 11:35:31 -0400 | [diff] [blame] | 1066 | BUG_ON(!cmd->data_length); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1067 | |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1068 | ret = pscsi_map_sg(cmd, sgl, sgl_nents, data_direction, &hbio); |
Nicholas Bellinger | 03e98c9 | 2011-11-04 02:36:16 -0700 | [diff] [blame] | 1069 | if (ret < 0) { |
| 1070 | cmd->scsi_sense_reason = |
| 1071 | TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1072 | goto fail; |
Nicholas Bellinger | 03e98c9 | 2011-11-04 02:36:16 -0700 | [diff] [blame] | 1073 | } |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 1074 | |
| 1075 | req = blk_make_request(pdv->pdv_sd->request_queue, hbio, |
| 1076 | GFP_KERNEL); |
Dan Carpenter | ed327ed | 2011-11-02 08:48:15 -0700 | [diff] [blame] | 1077 | if (IS_ERR(req)) { |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 1078 | pr_err("pSCSI: blk_make_request() failed\n"); |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1079 | goto fail_free_bio; |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 1080 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1081 | } |
| 1082 | |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 1083 | req->cmd_type = REQ_TYPE_BLOCK_PC; |
| 1084 | req->end_io = pscsi_req_done; |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1085 | req->end_io_data = cmd; |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 1086 | req->cmd_len = scsi_command_size(pt->pscsi_cdb); |
| 1087 | req->cmd = &pt->pscsi_cdb[0]; |
| 1088 | req->sense = &pt->pscsi_sense[0]; |
| 1089 | req->sense_len = 0; |
| 1090 | if (pdv->pdv_sd->type == TYPE_DISK) |
| 1091 | req->timeout = PS_TIMEOUT_DISK; |
| 1092 | else |
| 1093 | req->timeout = PS_TIMEOUT_OTHER; |
| 1094 | req->retries = PS_RETRY; |
| 1095 | |
| 1096 | blk_execute_rq_nowait(pdv->pdv_sd->request_queue, NULL, req, |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1097 | (cmd->sam_task_attr == MSG_HEAD_TAG), |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 1098 | pscsi_req_done); |
| 1099 | |
Nicholas Bellinger | 03e98c9 | 2011-11-04 02:36:16 -0700 | [diff] [blame] | 1100 | return 0; |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 1101 | |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1102 | fail_free_bio: |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 1103 | while (hbio) { |
| 1104 | struct bio *bio = hbio; |
| 1105 | hbio = hbio->bi_next; |
| 1106 | bio->bi_next = NULL; |
| 1107 | bio_endio(bio, 0); /* XXX: should be error */ |
| 1108 | } |
Nicholas Bellinger | 03e98c9 | 2011-11-04 02:36:16 -0700 | [diff] [blame] | 1109 | cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1110 | fail: |
| 1111 | kfree(pt); |
Nicholas Bellinger | 03e98c9 | 2011-11-04 02:36:16 -0700 | [diff] [blame] | 1112 | return -ENOMEM; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1113 | } |
| 1114 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1115 | /* pscsi_get_device_rev(): |
| 1116 | * |
| 1117 | * |
| 1118 | */ |
| 1119 | static u32 pscsi_get_device_rev(struct se_device *dev) |
| 1120 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 1121 | struct pscsi_dev_virt *pdv = PSCSI_DEV(dev); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1122 | struct scsi_device *sd = pdv->pdv_sd; |
| 1123 | |
| 1124 | return (sd->scsi_level - 1) ? sd->scsi_level - 1 : 1; |
| 1125 | } |
| 1126 | |
| 1127 | /* pscsi_get_device_type(): |
| 1128 | * |
| 1129 | * |
| 1130 | */ |
| 1131 | static u32 pscsi_get_device_type(struct se_device *dev) |
| 1132 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 1133 | struct pscsi_dev_virt *pdv = PSCSI_DEV(dev); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1134 | struct scsi_device *sd = pdv->pdv_sd; |
| 1135 | |
| 1136 | return sd->type; |
| 1137 | } |
| 1138 | |
| 1139 | static sector_t pscsi_get_blocks(struct se_device *dev) |
| 1140 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 1141 | struct pscsi_dev_virt *pdv = PSCSI_DEV(dev); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1142 | |
| 1143 | if (pdv->pdv_bd && pdv->pdv_bd->bd_part) |
| 1144 | return pdv->pdv_bd->bd_part->nr_sects; |
| 1145 | |
| 1146 | dump_stack(); |
| 1147 | return 0; |
| 1148 | } |
| 1149 | |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1150 | static void pscsi_req_done(struct request *req, int uptodate) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1151 | { |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1152 | struct se_cmd *cmd = req->end_io_data; |
| 1153 | struct pscsi_plugin_task *pt = cmd->priv; |
| 1154 | |
| 1155 | pt->pscsi_result = req->errors; |
| 1156 | pt->pscsi_resid = req->resid_len; |
| 1157 | |
| 1158 | cmd->scsi_status = status_byte(pt->pscsi_result) << 1; |
| 1159 | if (cmd->scsi_status) { |
| 1160 | pr_debug("PSCSI Status Byte exception at cmd: %p CDB:" |
| 1161 | " 0x%02x Result: 0x%08x\n", cmd, pt->pscsi_cdb[0], |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1162 | pt->pscsi_result); |
| 1163 | } |
| 1164 | |
| 1165 | switch (host_byte(pt->pscsi_result)) { |
| 1166 | case DID_OK: |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1167 | target_complete_cmd(cmd, cmd->scsi_status); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1168 | break; |
| 1169 | default: |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1170 | pr_debug("PSCSI Host Byte exception at cmd: %p CDB:" |
| 1171 | " 0x%02x Result: 0x%08x\n", cmd, pt->pscsi_cdb[0], |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1172 | pt->pscsi_result); |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1173 | cmd->scsi_sense_reason = TCM_UNSUPPORTED_SCSI_OPCODE; |
| 1174 | target_complete_cmd(cmd, SAM_STAT_CHECK_CONDITION); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1175 | break; |
| 1176 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1177 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1178 | __blk_put_request(req->q, req); |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1179 | kfree(pt); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1180 | } |
| 1181 | |
| 1182 | static struct se_subsystem_api pscsi_template = { |
| 1183 | .name = "pscsi", |
| 1184 | .owner = THIS_MODULE, |
| 1185 | .transport_type = TRANSPORT_PLUGIN_PHBA_PDEV, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1186 | .attach_hba = pscsi_attach_hba, |
| 1187 | .detach_hba = pscsi_detach_hba, |
| 1188 | .pmode_enable_hba = pscsi_pmode_enable_hba, |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame^] | 1189 | .alloc_device = pscsi_alloc_device, |
| 1190 | .configure_device = pscsi_configure_device, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1191 | .free_device = pscsi_free_device, |
| 1192 | .transport_complete = pscsi_transport_complete, |
Christoph Hellwig | d6e0175 | 2012-05-20 11:59:14 -0400 | [diff] [blame] | 1193 | .parse_cdb = pscsi_parse_cdb, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1194 | .set_configfs_dev_params = pscsi_set_configfs_dev_params, |
| 1195 | .show_configfs_dev_params = pscsi_show_configfs_dev_params, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1196 | .get_device_rev = pscsi_get_device_rev, |
| 1197 | .get_device_type = pscsi_get_device_type, |
| 1198 | .get_blocks = pscsi_get_blocks, |
| 1199 | }; |
| 1200 | |
| 1201 | static int __init pscsi_module_init(void) |
| 1202 | { |
| 1203 | return transport_subsystem_register(&pscsi_template); |
| 1204 | } |
| 1205 | |
| 1206 | static void pscsi_module_exit(void) |
| 1207 | { |
| 1208 | transport_subsystem_release(&pscsi_template); |
| 1209 | } |
| 1210 | |
| 1211 | MODULE_DESCRIPTION("TCM PSCSI subsystem plugin"); |
| 1212 | MODULE_AUTHOR("nab@Linux-iSCSI.org"); |
| 1213 | MODULE_LICENSE("GPL"); |
| 1214 | |
| 1215 | module_init(pscsi_module_init); |
| 1216 | module_exit(pscsi_module_exit); |