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 | * |
Nicholas Bellinger | 4c76251 | 2013-09-05 15:29:12 -0700 | [diff] [blame] | 6 | * (c) Copyright 2003-2013 Datera, Inc. |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 7 | * |
| 8 | * Nicholas A. Bellinger <nab@kernel.org> |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; either version 2 of the License, or |
| 13 | * (at your option) any later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | * GNU General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License |
| 21 | * along with this program; if not, write to the Free Software |
| 22 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 23 | * |
| 24 | ******************************************************************************/ |
| 25 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 26 | #include <linux/string.h> |
| 27 | #include <linux/parser.h> |
| 28 | #include <linux/timer.h> |
| 29 | #include <linux/blkdev.h> |
| 30 | #include <linux/blk_types.h> |
| 31 | #include <linux/slab.h> |
| 32 | #include <linux/spinlock.h> |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 33 | #include <linux/genhd.h> |
| 34 | #include <linux/cdrom.h> |
Christoph Hellwig | d6e0175 | 2012-05-20 11:59:14 -0400 | [diff] [blame] | 35 | #include <linux/ratelimit.h> |
Paul Gortmaker | 827509e | 2011-08-30 14:20:44 -0400 | [diff] [blame] | 36 | #include <linux/module.h> |
Christoph Hellwig | d6e0175 | 2012-05-20 11:59:14 -0400 | [diff] [blame] | 37 | #include <asm/unaligned.h> |
| 38 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 39 | #include <scsi/scsi.h> |
| 40 | #include <scsi/scsi_device.h> |
| 41 | #include <scsi/scsi_cmnd.h> |
| 42 | #include <scsi/scsi_host.h> |
Nicholas Bellinger | e66ecd5 | 2011-05-19 20:19:14 -0700 | [diff] [blame] | 43 | #include <scsi/scsi_tcq.h> |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 44 | |
| 45 | #include <target/target_core_base.h> |
Christoph Hellwig | c4795fb | 2011-11-16 09:46:48 -0500 | [diff] [blame] | 46 | #include <target/target_core_backend.h> |
Nicholas Bellinger | 6cfb546 | 2014-11-28 05:26:18 +0000 | [diff] [blame] | 47 | #include <target/target_core_backend_configfs.h> |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 48 | |
Christoph Hellwig | d6e0175 | 2012-05-20 11:59:14 -0400 | [diff] [blame] | 49 | #include "target_core_alua.h" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 50 | #include "target_core_pscsi.h" |
| 51 | |
| 52 | #define ISPRINT(a) ((a >= ' ') && (a <= '~')) |
| 53 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 54 | static inline struct pscsi_dev_virt *PSCSI_DEV(struct se_device *dev) |
| 55 | { |
| 56 | return container_of(dev, struct pscsi_dev_virt, dev); |
| 57 | } |
| 58 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 59 | static struct se_subsystem_api pscsi_template; |
| 60 | |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 61 | static sense_reason_t pscsi_execute_cmd(struct se_cmd *cmd); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 62 | static void pscsi_req_done(struct request *, int); |
| 63 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 64 | /* pscsi_attach_hba(): |
| 65 | * |
| 66 | * pscsi_get_sh() used scsi_host_lookup() to locate struct Scsi_Host. |
| 67 | * from the passed SCSI Host ID. |
| 68 | */ |
| 69 | static int pscsi_attach_hba(struct se_hba *hba, u32 host_id) |
| 70 | { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 71 | struct pscsi_hba_virt *phv; |
| 72 | |
| 73 | phv = kzalloc(sizeof(struct pscsi_hba_virt), GFP_KERNEL); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 74 | if (!phv) { |
| 75 | pr_err("Unable to allocate struct pscsi_hba_virt\n"); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 76 | return -ENOMEM; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 77 | } |
| 78 | phv->phv_host_id = host_id; |
Stefan Hajnoczi | e6a8a41 | 2012-02-23 18:15:26 +0000 | [diff] [blame] | 79 | phv->phv_mode = PHV_VIRTUAL_HOST_ID; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 80 | |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 81 | hba->hba_ptr = phv; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 82 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 83 | pr_debug("CORE_HBA[%d] - TCM SCSI HBA Driver %s on" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 84 | " Generic Target Core Stack %s\n", hba->hba_id, |
| 85 | PSCSI_VERSION, TARGET_CORE_MOD_VERSION); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 86 | pr_debug("CORE_HBA[%d] - Attached SCSI HBA to Generic\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 87 | hba->hba_id); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 88 | |
| 89 | return 0; |
| 90 | } |
| 91 | |
| 92 | static void pscsi_detach_hba(struct se_hba *hba) |
| 93 | { |
| 94 | struct pscsi_hba_virt *phv = hba->hba_ptr; |
| 95 | struct Scsi_Host *scsi_host = phv->phv_lld_host; |
| 96 | |
| 97 | if (scsi_host) { |
| 98 | scsi_host_put(scsi_host); |
| 99 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 100 | pr_debug("CORE_HBA[%d] - Detached SCSI HBA: %s from" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 101 | " Generic Target Core\n", hba->hba_id, |
| 102 | (scsi_host->hostt->name) ? (scsi_host->hostt->name) : |
| 103 | "Unknown"); |
| 104 | } else |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 105 | pr_debug("CORE_HBA[%d] - Detached Virtual SCSI HBA" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 106 | " from Generic Target Core\n", hba->hba_id); |
| 107 | |
| 108 | kfree(phv); |
| 109 | hba->hba_ptr = NULL; |
| 110 | } |
| 111 | |
| 112 | static int pscsi_pmode_enable_hba(struct se_hba *hba, unsigned long mode_flag) |
| 113 | { |
Jörn Engel | 8359cf4 | 2011-11-24 02:05:51 +0100 | [diff] [blame] | 114 | struct pscsi_hba_virt *phv = hba->hba_ptr; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 115 | struct Scsi_Host *sh = phv->phv_lld_host; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 116 | /* |
| 117 | * Release the struct Scsi_Host |
| 118 | */ |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 119 | if (!mode_flag) { |
| 120 | if (!sh) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 121 | return 0; |
| 122 | |
| 123 | phv->phv_lld_host = NULL; |
Stefan Hajnoczi | e6a8a41 | 2012-02-23 18:15:26 +0000 | [diff] [blame] | 124 | phv->phv_mode = PHV_VIRTUAL_HOST_ID; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 125 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 126 | pr_debug("CORE_HBA[%d] - Disabled pSCSI HBA Passthrough" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 127 | " %s\n", hba->hba_id, (sh->hostt->name) ? |
| 128 | (sh->hostt->name) : "Unknown"); |
| 129 | |
| 130 | scsi_host_put(sh); |
| 131 | return 0; |
| 132 | } |
| 133 | /* |
| 134 | * Otherwise, locate struct Scsi_Host from the original passed |
| 135 | * pSCSI Host ID and enable for phba mode |
| 136 | */ |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 137 | sh = scsi_host_lookup(phv->phv_host_id); |
Wei Yongjun | 58932e9 | 2013-10-25 21:53:33 +0800 | [diff] [blame] | 138 | if (!sh) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 139 | pr_err("pSCSI: Unable to locate SCSI Host for" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 140 | " phv_host_id: %d\n", phv->phv_host_id); |
Wei Yongjun | 58932e9 | 2013-10-25 21:53:33 +0800 | [diff] [blame] | 141 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 142 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 143 | |
| 144 | phv->phv_lld_host = sh; |
| 145 | phv->phv_mode = PHV_LLD_SCSI_HOST_NO; |
| 146 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 147 | pr_debug("CORE_HBA[%d] - Enabled pSCSI HBA Passthrough %s\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 148 | hba->hba_id, (sh->hostt->name) ? (sh->hostt->name) : "Unknown"); |
| 149 | |
| 150 | return 1; |
| 151 | } |
| 152 | |
| 153 | static void pscsi_tape_read_blocksize(struct se_device *dev, |
| 154 | struct scsi_device *sdev) |
| 155 | { |
| 156 | unsigned char cdb[MAX_COMMAND_SIZE], *buf; |
| 157 | int ret; |
| 158 | |
| 159 | buf = kzalloc(12, GFP_KERNEL); |
| 160 | if (!buf) |
| 161 | return; |
| 162 | |
| 163 | memset(cdb, 0, MAX_COMMAND_SIZE); |
| 164 | cdb[0] = MODE_SENSE; |
| 165 | cdb[4] = 0x0c; /* 12 bytes */ |
| 166 | |
| 167 | ret = scsi_execute_req(sdev, cdb, DMA_FROM_DEVICE, buf, 12, NULL, |
| 168 | HZ, 1, NULL); |
| 169 | if (ret) |
| 170 | goto out_free; |
| 171 | |
| 172 | /* |
| 173 | * If MODE_SENSE still returns zero, set the default value to 1024. |
| 174 | */ |
| 175 | sdev->sector_size = (buf[9] << 16) | (buf[10] << 8) | (buf[11]); |
| 176 | if (!sdev->sector_size) |
| 177 | sdev->sector_size = 1024; |
| 178 | out_free: |
| 179 | kfree(buf); |
| 180 | } |
| 181 | |
| 182 | static void |
| 183 | pscsi_set_inquiry_info(struct scsi_device *sdev, struct t10_wwn *wwn) |
| 184 | { |
| 185 | unsigned char *buf; |
| 186 | |
| 187 | if (sdev->inquiry_len < INQUIRY_LEN) |
| 188 | return; |
| 189 | |
| 190 | buf = sdev->inquiry; |
| 191 | if (!buf) |
| 192 | return; |
| 193 | /* |
| 194 | * Use sdev->inquiry from drivers/scsi/scsi_scan.c:scsi_alloc_sdev() |
| 195 | */ |
| 196 | memcpy(&wwn->vendor[0], &buf[8], sizeof(wwn->vendor)); |
| 197 | memcpy(&wwn->model[0], &buf[16], sizeof(wwn->model)); |
| 198 | memcpy(&wwn->revision[0], &buf[32], sizeof(wwn->revision)); |
| 199 | } |
| 200 | |
| 201 | static int |
| 202 | pscsi_get_inquiry_vpd_serial(struct scsi_device *sdev, struct t10_wwn *wwn) |
| 203 | { |
| 204 | unsigned char cdb[MAX_COMMAND_SIZE], *buf; |
| 205 | int ret; |
| 206 | |
| 207 | buf = kzalloc(INQUIRY_VPD_SERIAL_LEN, GFP_KERNEL); |
| 208 | if (!buf) |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 209 | return -ENOMEM; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 210 | |
| 211 | memset(cdb, 0, MAX_COMMAND_SIZE); |
| 212 | cdb[0] = INQUIRY; |
| 213 | cdb[1] = 0x01; /* Query VPD */ |
| 214 | cdb[2] = 0x80; /* Unit Serial Number */ |
| 215 | cdb[3] = (INQUIRY_VPD_SERIAL_LEN >> 8) & 0xff; |
| 216 | cdb[4] = (INQUIRY_VPD_SERIAL_LEN & 0xff); |
| 217 | |
| 218 | ret = scsi_execute_req(sdev, cdb, DMA_FROM_DEVICE, buf, |
| 219 | INQUIRY_VPD_SERIAL_LEN, NULL, HZ, 1, NULL); |
| 220 | if (ret) |
| 221 | goto out_free; |
| 222 | |
| 223 | snprintf(&wwn->unit_serial[0], INQUIRY_VPD_SERIAL_LEN, "%s", &buf[4]); |
| 224 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 225 | wwn->t10_dev->dev_flags |= DF_FIRMWARE_VPD_UNIT_SERIAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 226 | |
| 227 | kfree(buf); |
| 228 | return 0; |
| 229 | |
| 230 | out_free: |
| 231 | kfree(buf); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 232 | return -EPERM; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 233 | } |
| 234 | |
| 235 | static void |
| 236 | pscsi_get_inquiry_vpd_device_ident(struct scsi_device *sdev, |
| 237 | struct t10_wwn *wwn) |
| 238 | { |
| 239 | unsigned char cdb[MAX_COMMAND_SIZE], *buf, *page_83; |
| 240 | int ident_len, page_len, off = 4, ret; |
| 241 | struct t10_vpd *vpd; |
| 242 | |
| 243 | buf = kzalloc(INQUIRY_VPD_SERIAL_LEN, GFP_KERNEL); |
| 244 | if (!buf) |
| 245 | return; |
| 246 | |
| 247 | memset(cdb, 0, MAX_COMMAND_SIZE); |
| 248 | cdb[0] = INQUIRY; |
| 249 | cdb[1] = 0x01; /* Query VPD */ |
| 250 | cdb[2] = 0x83; /* Device Identifier */ |
| 251 | cdb[3] = (INQUIRY_VPD_DEVICE_IDENTIFIER_LEN >> 8) & 0xff; |
| 252 | cdb[4] = (INQUIRY_VPD_DEVICE_IDENTIFIER_LEN & 0xff); |
| 253 | |
| 254 | ret = scsi_execute_req(sdev, cdb, DMA_FROM_DEVICE, buf, |
| 255 | INQUIRY_VPD_DEVICE_IDENTIFIER_LEN, |
| 256 | NULL, HZ, 1, NULL); |
| 257 | if (ret) |
| 258 | goto out; |
| 259 | |
| 260 | page_len = (buf[2] << 8) | buf[3]; |
| 261 | while (page_len > 0) { |
| 262 | /* Grab a pointer to the Identification descriptor */ |
| 263 | page_83 = &buf[off]; |
| 264 | ident_len = page_83[3]; |
| 265 | if (!ident_len) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 266 | pr_err("page_83[3]: identifier" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 267 | " length zero!\n"); |
| 268 | break; |
| 269 | } |
Masanari Iida | 35d1efe | 2012-08-16 22:43:13 +0900 | [diff] [blame] | 270 | pr_debug("T10 VPD Identifier Length: %d\n", ident_len); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 271 | |
| 272 | vpd = kzalloc(sizeof(struct t10_vpd), GFP_KERNEL); |
| 273 | if (!vpd) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 274 | pr_err("Unable to allocate memory for" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 275 | " struct t10_vpd\n"); |
| 276 | goto out; |
| 277 | } |
| 278 | INIT_LIST_HEAD(&vpd->vpd_list); |
| 279 | |
| 280 | transport_set_vpd_proto_id(vpd, page_83); |
| 281 | transport_set_vpd_assoc(vpd, page_83); |
| 282 | |
| 283 | if (transport_set_vpd_ident_type(vpd, page_83) < 0) { |
| 284 | off += (ident_len + 4); |
| 285 | page_len -= (ident_len + 4); |
| 286 | kfree(vpd); |
| 287 | continue; |
| 288 | } |
| 289 | if (transport_set_vpd_ident(vpd, page_83) < 0) { |
| 290 | off += (ident_len + 4); |
| 291 | page_len -= (ident_len + 4); |
| 292 | kfree(vpd); |
| 293 | continue; |
| 294 | } |
| 295 | |
| 296 | list_add_tail(&vpd->vpd_list, &wwn->t10_vpd_list); |
| 297 | off += (ident_len + 4); |
| 298 | page_len -= (ident_len + 4); |
| 299 | } |
| 300 | |
| 301 | out: |
| 302 | kfree(buf); |
| 303 | } |
| 304 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 305 | static int pscsi_add_device_to_list(struct se_device *dev, |
| 306 | struct scsi_device *sd) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 307 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 308 | struct pscsi_dev_virt *pdv = PSCSI_DEV(dev); |
| 309 | struct request_queue *q = sd->request_queue; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 310 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 311 | pdv->pdv_sd = sd; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 312 | |
| 313 | if (!sd->queue_depth) { |
| 314 | sd->queue_depth = PSCSI_DEFAULT_QUEUEDEPTH; |
| 315 | |
Hannes Reinecke | 9cb78c1 | 2014-06-25 15:27:36 +0200 | [diff] [blame] | 316 | pr_err("Set broken SCSI Device %d:%d:%llu" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 317 | " queue_depth to %d\n", sd->channel, sd->id, |
| 318 | sd->lun, sd->queue_depth); |
| 319 | } |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 320 | |
| 321 | dev->dev_attrib.hw_block_size = sd->sector_size; |
| 322 | dev->dev_attrib.hw_max_sectors = |
| 323 | min_t(int, sd->host->max_sectors, queue_max_hw_sectors(q)); |
| 324 | dev->dev_attrib.hw_queue_depth = sd->queue_depth; |
| 325 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 326 | /* |
| 327 | * Setup our standard INQUIRY info into se_dev->t10_wwn |
| 328 | */ |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 329 | pscsi_set_inquiry_info(sd, &dev->t10_wwn); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 330 | |
| 331 | /* |
| 332 | * Locate VPD WWN Information used for various purposes within |
| 333 | * the Storage Engine. |
| 334 | */ |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 335 | if (!pscsi_get_inquiry_vpd_serial(sd, &dev->t10_wwn)) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 336 | /* |
| 337 | * If VPD Unit Serial returned GOOD status, try |
| 338 | * VPD Device Identification page (0x83). |
| 339 | */ |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 340 | pscsi_get_inquiry_vpd_device_ident(sd, &dev->t10_wwn); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 341 | } |
| 342 | |
| 343 | /* |
| 344 | * For TYPE_TAPE, attempt to determine blocksize with MODE_SENSE. |
| 345 | */ |
| 346 | if (sd->type == TYPE_TAPE) |
| 347 | pscsi_tape_read_blocksize(dev, sd); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 348 | return 0; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 349 | } |
| 350 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 351 | static struct se_device *pscsi_alloc_device(struct se_hba *hba, |
| 352 | const char *name) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 353 | { |
| 354 | struct pscsi_dev_virt *pdv; |
| 355 | |
| 356 | pdv = kzalloc(sizeof(struct pscsi_dev_virt), GFP_KERNEL); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 357 | if (!pdv) { |
| 358 | pr_err("Unable to allocate memory for struct pscsi_dev_virt\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 359 | return NULL; |
| 360 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 361 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 362 | pr_debug("PSCSI: Allocated pdv: %p for %s\n", pdv, name); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 363 | return &pdv->dev; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 364 | } |
| 365 | |
| 366 | /* |
| 367 | * Called with struct Scsi_Host->host_lock called. |
| 368 | */ |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 369 | 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] | 370 | __releases(sh->host_lock) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 371 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 372 | struct pscsi_hba_virt *phv = dev->se_hba->hba_ptr; |
| 373 | struct pscsi_dev_virt *pdv = PSCSI_DEV(dev); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 374 | struct Scsi_Host *sh = sd->host; |
| 375 | struct block_device *bd; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 376 | int ret; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 377 | |
| 378 | if (scsi_device_get(sd)) { |
Hannes Reinecke | 9cb78c1 | 2014-06-25 15:27:36 +0200 | [diff] [blame] | 379 | pr_err("scsi_device_get() failed for %d:%d:%d:%llu\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 380 | sh->host_no, sd->channel, sd->id, sd->lun); |
| 381 | spin_unlock_irq(sh->host_lock); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 382 | return -EIO; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 383 | } |
| 384 | spin_unlock_irq(sh->host_lock); |
| 385 | /* |
| 386 | * Claim exclusive struct block_device access to struct scsi_device |
| 387 | * for TYPE_DISK using supplied udev_path |
| 388 | */ |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 389 | bd = blkdev_get_by_path(dev->udev_path, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 390 | FMODE_WRITE|FMODE_READ|FMODE_EXCL, pdv); |
Dan Carpenter | 3ae279d | 2011-02-09 15:34:36 -0800 | [diff] [blame] | 391 | if (IS_ERR(bd)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 392 | pr_err("pSCSI: blkdev_get_by_path() failed\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 393 | scsi_device_put(sd); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 394 | return PTR_ERR(bd); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 395 | } |
| 396 | pdv->pdv_bd = bd; |
| 397 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 398 | ret = pscsi_add_device_to_list(dev, sd); |
| 399 | if (ret) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 400 | blkdev_put(pdv->pdv_bd, FMODE_WRITE|FMODE_READ|FMODE_EXCL); |
| 401 | scsi_device_put(sd); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 402 | return ret; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 403 | } |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 404 | |
Hannes Reinecke | 9cb78c1 | 2014-06-25 15:27:36 +0200 | [diff] [blame] | 405 | pr_debug("CORE_PSCSI[%d] - Added TYPE_DISK for %d:%d:%d:%llu\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 406 | 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] | 407 | return 0; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 408 | } |
| 409 | |
| 410 | /* |
| 411 | * Called with struct Scsi_Host->host_lock called. |
| 412 | */ |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 413 | 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] | 414 | __releases(sh->host_lock) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 415 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 416 | struct pscsi_hba_virt *phv = dev->se_hba->hba_ptr; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 417 | struct Scsi_Host *sh = sd->host; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 418 | int ret; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 419 | |
| 420 | if (scsi_device_get(sd)) { |
Hannes Reinecke | 9cb78c1 | 2014-06-25 15:27:36 +0200 | [diff] [blame] | 421 | pr_err("scsi_device_get() failed for %d:%d:%d:%llu\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 422 | sh->host_no, sd->channel, sd->id, sd->lun); |
| 423 | spin_unlock_irq(sh->host_lock); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 424 | return -EIO; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 425 | } |
| 426 | spin_unlock_irq(sh->host_lock); |
| 427 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 428 | ret = pscsi_add_device_to_list(dev, sd); |
| 429 | if (ret) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 430 | scsi_device_put(sd); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 431 | return ret; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 432 | } |
Hannes Reinecke | 9cb78c1 | 2014-06-25 15:27:36 +0200 | [diff] [blame] | 433 | pr_debug("CORE_PSCSI[%d] - Added Type: %s for %d:%d:%d:%llu\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 434 | phv->phv_host_id, scsi_device_type(sd->type), sh->host_no, |
| 435 | sd->channel, sd->id, sd->lun); |
| 436 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 437 | return 0; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 438 | } |
| 439 | |
| 440 | /* |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 441 | * Called with struct Scsi_Host->host_lock called. |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 442 | */ |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 443 | static int pscsi_create_type_other(struct se_device *dev, |
| 444 | struct scsi_device *sd) |
Dan Carpenter | 5dd7ed2e | 2011-03-14 04:06:01 -0700 | [diff] [blame] | 445 | __releases(sh->host_lock) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 446 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 447 | struct pscsi_hba_virt *phv = dev->se_hba->hba_ptr; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 448 | struct Scsi_Host *sh = sd->host; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 449 | int ret; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 450 | |
| 451 | spin_unlock_irq(sh->host_lock); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 452 | ret = pscsi_add_device_to_list(dev, sd); |
| 453 | if (ret) |
| 454 | return ret; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 455 | |
Hannes Reinecke | 9cb78c1 | 2014-06-25 15:27:36 +0200 | [diff] [blame] | 456 | pr_debug("CORE_PSCSI[%d] - Added Type: %s for %d:%d:%d:%llu\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 457 | phv->phv_host_id, scsi_device_type(sd->type), sh->host_no, |
| 458 | sd->channel, sd->id, sd->lun); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 459 | return 0; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 460 | } |
| 461 | |
Fengguang Wu | ecf0dd6 | 2012-10-10 07:30:20 +0800 | [diff] [blame] | 462 | static int pscsi_configure_device(struct se_device *dev) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 463 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 464 | struct se_hba *hba = dev->se_hba; |
| 465 | struct pscsi_dev_virt *pdv = PSCSI_DEV(dev); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 466 | struct scsi_device *sd; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 467 | struct pscsi_hba_virt *phv = dev->se_hba->hba_ptr; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 468 | struct Scsi_Host *sh = phv->phv_lld_host; |
| 469 | int legacy_mode_enable = 0; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 470 | int ret; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 471 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 472 | if (!(pdv->pdv_flags & PDF_HAS_CHANNEL_ID) || |
| 473 | !(pdv->pdv_flags & PDF_HAS_TARGET_ID) || |
| 474 | !(pdv->pdv_flags & PDF_HAS_LUN_ID)) { |
| 475 | pr_err("Missing scsi_channel_id=, scsi_target_id= and" |
| 476 | " scsi_lun_id= parameters\n"); |
| 477 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 478 | } |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 479 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 480 | /* |
| 481 | * If not running in PHV_LLD_SCSI_HOST_NO mode, locate the |
| 482 | * struct Scsi_Host we will need to bring the TCM/pSCSI object online |
| 483 | */ |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 484 | if (!sh) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 485 | if (phv->phv_mode == PHV_LLD_SCSI_HOST_NO) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 486 | pr_err("pSCSI: Unable to locate struct" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 487 | " Scsi_Host for PHV_LLD_SCSI_HOST_NO\n"); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 488 | return -ENODEV; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 489 | } |
| 490 | /* |
Stefan Hajnoczi | e6a8a41 | 2012-02-23 18:15:26 +0000 | [diff] [blame] | 491 | * For the newer PHV_VIRTUAL_HOST_ID struct scsi_device |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 492 | * reference, we enforce that udev_path has been set |
| 493 | */ |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 494 | if (!(dev->dev_flags & DF_USING_UDEV_PATH)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 495 | pr_err("pSCSI: udev_path attribute has not" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 496 | " been set before ENABLE=1\n"); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 497 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 498 | } |
| 499 | /* |
Stefan Hajnoczi | e6a8a41 | 2012-02-23 18:15:26 +0000 | [diff] [blame] | 500 | * If no scsi_host_id= was passed for PHV_VIRTUAL_HOST_ID, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 501 | * use the original TCM hba ID to reference Linux/SCSI Host No |
| 502 | * and enable for PHV_LLD_SCSI_HOST_NO mode. |
| 503 | */ |
| 504 | if (!(pdv->pdv_flags & PDF_HAS_VIRT_HOST_ID)) { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 505 | if (hba->dev_count) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 506 | pr_err("pSCSI: Unable to set hba_mode" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 507 | " with active devices\n"); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 508 | return -EEXIST; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 509 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 510 | |
| 511 | if (pscsi_pmode_enable_hba(hba, 1) != 1) |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 512 | return -ENODEV; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 513 | |
| 514 | legacy_mode_enable = 1; |
| 515 | hba->hba_flags |= HBA_FLAGS_PSCSI_MODE; |
| 516 | sh = phv->phv_lld_host; |
| 517 | } else { |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 518 | sh = scsi_host_lookup(pdv->pdv_host_id); |
Wei Yongjun | 58932e9 | 2013-10-25 21:53:33 +0800 | [diff] [blame] | 519 | if (!sh) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 520 | pr_err("pSCSI: Unable to locate" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 521 | " pdv_host_id: %d\n", pdv->pdv_host_id); |
Wei Yongjun | 58932e9 | 2013-10-25 21:53:33 +0800 | [diff] [blame] | 522 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 523 | } |
| 524 | } |
| 525 | } else { |
Stefan Hajnoczi | e6a8a41 | 2012-02-23 18:15:26 +0000 | [diff] [blame] | 526 | if (phv->phv_mode == PHV_VIRTUAL_HOST_ID) { |
| 527 | pr_err("pSCSI: PHV_VIRTUAL_HOST_ID set while" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 528 | " struct Scsi_Host exists\n"); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 529 | return -EEXIST; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 530 | } |
| 531 | } |
| 532 | |
| 533 | spin_lock_irq(sh->host_lock); |
| 534 | list_for_each_entry(sd, &sh->__devices, siblings) { |
| 535 | if ((pdv->pdv_channel_id != sd->channel) || |
| 536 | (pdv->pdv_target_id != sd->id) || |
| 537 | (pdv->pdv_lun_id != sd->lun)) |
| 538 | continue; |
| 539 | /* |
| 540 | * Functions will release the held struct scsi_host->host_lock |
| 541 | * before calling calling pscsi_add_device_to_list() to register |
| 542 | * struct scsi_device with target_core_mod. |
| 543 | */ |
| 544 | switch (sd->type) { |
| 545 | case TYPE_DISK: |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 546 | ret = pscsi_create_type_disk(dev, sd); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 547 | break; |
| 548 | case TYPE_ROM: |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 549 | ret = pscsi_create_type_rom(dev, sd); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 550 | break; |
| 551 | default: |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 552 | ret = pscsi_create_type_other(dev, sd); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 553 | break; |
| 554 | } |
| 555 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 556 | if (ret) { |
Stefan Hajnoczi | e6a8a41 | 2012-02-23 18:15:26 +0000 | [diff] [blame] | 557 | if (phv->phv_mode == PHV_VIRTUAL_HOST_ID) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 558 | scsi_host_put(sh); |
| 559 | else if (legacy_mode_enable) { |
| 560 | pscsi_pmode_enable_hba(hba, 0); |
| 561 | hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE; |
| 562 | } |
| 563 | pdv->pdv_sd = NULL; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 564 | return ret; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 565 | } |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 566 | return 0; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 567 | } |
| 568 | spin_unlock_irq(sh->host_lock); |
| 569 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 570 | 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] | 571 | pdv->pdv_channel_id, pdv->pdv_target_id, pdv->pdv_lun_id); |
| 572 | |
Stefan Hajnoczi | e6a8a41 | 2012-02-23 18:15:26 +0000 | [diff] [blame] | 573 | if (phv->phv_mode == PHV_VIRTUAL_HOST_ID) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 574 | scsi_host_put(sh); |
| 575 | else if (legacy_mode_enable) { |
| 576 | pscsi_pmode_enable_hba(hba, 0); |
| 577 | hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE; |
| 578 | } |
| 579 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 580 | return -ENODEV; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 581 | } |
| 582 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 583 | static void pscsi_free_device(struct se_device *dev) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 584 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 585 | struct pscsi_dev_virt *pdv = PSCSI_DEV(dev); |
| 586 | struct pscsi_hba_virt *phv = dev->se_hba->hba_ptr; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 587 | struct scsi_device *sd = pdv->pdv_sd; |
| 588 | |
| 589 | if (sd) { |
| 590 | /* |
| 591 | * Release exclusive pSCSI internal struct block_device claim for |
| 592 | * struct scsi_device with TYPE_DISK from pscsi_create_type_disk() |
| 593 | */ |
| 594 | if ((sd->type == TYPE_DISK) && pdv->pdv_bd) { |
| 595 | blkdev_put(pdv->pdv_bd, |
| 596 | FMODE_WRITE|FMODE_READ|FMODE_EXCL); |
| 597 | pdv->pdv_bd = NULL; |
| 598 | } |
| 599 | /* |
| 600 | * For HBA mode PHV_LLD_SCSI_HOST_NO, release the reference |
| 601 | * to struct Scsi_Host now. |
| 602 | */ |
| 603 | if ((phv->phv_mode == PHV_LLD_SCSI_HOST_NO) && |
| 604 | (phv->phv_lld_host != NULL)) |
| 605 | scsi_host_put(phv->phv_lld_host); |
| 606 | |
| 607 | if ((sd->type == TYPE_DISK) || (sd->type == TYPE_ROM)) |
| 608 | scsi_device_put(sd); |
| 609 | |
| 610 | pdv->pdv_sd = NULL; |
| 611 | } |
| 612 | |
| 613 | kfree(pdv); |
| 614 | } |
| 615 | |
Paolo Bonzini | d5829ea | 2012-09-05 17:09:15 +0200 | [diff] [blame] | 616 | static void pscsi_transport_complete(struct se_cmd *cmd, struct scatterlist *sg, |
| 617 | unsigned char *sense_buffer) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 618 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 619 | struct pscsi_dev_virt *pdv = PSCSI_DEV(cmd->se_dev); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 620 | struct scsi_device *sd = pdv->pdv_sd; |
| 621 | int result; |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 622 | struct pscsi_plugin_task *pt = cmd->priv; |
Nicholas Bellinger | 1d2a2cd | 2012-08-08 00:14:13 +0000 | [diff] [blame] | 623 | unsigned char *cdb; |
| 624 | /* |
| 625 | * Special case for REPORT_LUNs handling where pscsi_plugin_task has |
| 626 | * not been allocated because TCM is handling the emulation directly. |
| 627 | */ |
| 628 | if (!pt) |
Paolo Bonzini | d5829ea | 2012-09-05 17:09:15 +0200 | [diff] [blame] | 629 | return; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 630 | |
Nicholas Bellinger | 1d2a2cd | 2012-08-08 00:14:13 +0000 | [diff] [blame] | 631 | cdb = &pt->pscsi_cdb[0]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 632 | result = pt->pscsi_result; |
| 633 | /* |
| 634 | * Hack to make sure that Write-Protect modepage is set if R/O mode is |
| 635 | * forced. |
| 636 | */ |
Paolo Bonzini | 306c11b | 2012-09-07 17:30:32 +0200 | [diff] [blame] | 637 | if (!cmd->se_deve || !cmd->data_length) |
| 638 | goto after_mode_sense; |
| 639 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 640 | if (((cdb[0] == MODE_SENSE) || (cdb[0] == MODE_SENSE_10)) && |
| 641 | (status_byte(result) << 1) == SAM_STAT_GOOD) { |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 642 | if (cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY) { |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 643 | unsigned char *buf; |
| 644 | |
| 645 | buf = transport_kmap_data_sg(cmd); |
| 646 | if (!buf) |
| 647 | ; /* XXX: TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE */ |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 648 | |
| 649 | if (cdb[0] == MODE_SENSE_10) { |
| 650 | if (!(buf[3] & 0x80)) |
| 651 | buf[3] |= 0x80; |
| 652 | } else { |
| 653 | if (!(buf[2] & 0x80)) |
| 654 | buf[2] |= 0x80; |
| 655 | } |
Andy Grover | 05d1c7c | 2011-07-20 19:13:28 +0000 | [diff] [blame] | 656 | |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 657 | transport_kunmap_data_sg(cmd); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 658 | } |
| 659 | } |
| 660 | after_mode_sense: |
| 661 | |
Paolo Bonzini | 306c11b | 2012-09-07 17:30:32 +0200 | [diff] [blame] | 662 | if (sd->type != TYPE_TAPE || !cmd->data_length) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 663 | goto after_mode_select; |
| 664 | |
| 665 | /* |
| 666 | * Hack to correctly obtain the initiator requested blocksize for |
| 667 | * TYPE_TAPE. Since this value is dependent upon each tape media, |
| 668 | * struct scsi_device->sector_size will not contain the correct value |
| 669 | * by default, so we go ahead and set it so |
| 670 | * TRANSPORT(dev)->get_blockdev() returns the correct value to the |
| 671 | * storage engine. |
| 672 | */ |
| 673 | if (((cdb[0] == MODE_SELECT) || (cdb[0] == MODE_SELECT_10)) && |
| 674 | (status_byte(result) << 1) == SAM_STAT_GOOD) { |
| 675 | unsigned char *buf; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 676 | u16 bdl; |
| 677 | u32 blocksize; |
| 678 | |
| 679 | buf = sg_virt(&sg[0]); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 680 | if (!buf) { |
| 681 | pr_err("Unable to get buf for scatterlist\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 682 | goto after_mode_select; |
| 683 | } |
| 684 | |
| 685 | if (cdb[0] == MODE_SELECT) |
| 686 | bdl = (buf[3]); |
| 687 | else |
| 688 | bdl = (buf[6] << 8) | (buf[7]); |
| 689 | |
| 690 | if (!bdl) |
| 691 | goto after_mode_select; |
| 692 | |
| 693 | if (cdb[0] == MODE_SELECT) |
| 694 | blocksize = (buf[9] << 16) | (buf[10] << 8) | |
| 695 | (buf[11]); |
| 696 | else |
| 697 | blocksize = (buf[13] << 16) | (buf[14] << 8) | |
| 698 | (buf[15]); |
| 699 | |
| 700 | sd->sector_size = blocksize; |
| 701 | } |
| 702 | after_mode_select: |
| 703 | |
Paolo Bonzini | d5829ea | 2012-09-05 17:09:15 +0200 | [diff] [blame] | 704 | if (sense_buffer && (status_byte(result) & CHECK_CONDITION)) { |
| 705 | memcpy(sense_buffer, pt->pscsi_sense, TRANSPORT_SENSE_BUFFER); |
| 706 | cmd->se_cmd_flags |= SCF_TRANSPORT_TASK_SENSE; |
| 707 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 708 | } |
| 709 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 710 | enum { |
| 711 | Opt_scsi_host_id, Opt_scsi_channel_id, Opt_scsi_target_id, |
| 712 | Opt_scsi_lun_id, Opt_err |
| 713 | }; |
| 714 | |
| 715 | static match_table_t tokens = { |
| 716 | {Opt_scsi_host_id, "scsi_host_id=%d"}, |
| 717 | {Opt_scsi_channel_id, "scsi_channel_id=%d"}, |
| 718 | {Opt_scsi_target_id, "scsi_target_id=%d"}, |
| 719 | {Opt_scsi_lun_id, "scsi_lun_id=%d"}, |
| 720 | {Opt_err, NULL} |
| 721 | }; |
| 722 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 723 | static ssize_t pscsi_set_configfs_dev_params(struct se_device *dev, |
| 724 | const char *page, ssize_t count) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 725 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 726 | struct pscsi_dev_virt *pdv = PSCSI_DEV(dev); |
| 727 | struct pscsi_hba_virt *phv = dev->se_hba->hba_ptr; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 728 | char *orig, *ptr, *opts; |
| 729 | substring_t args[MAX_OPT_ARGS]; |
| 730 | int ret = 0, arg, token; |
| 731 | |
| 732 | opts = kstrdup(page, GFP_KERNEL); |
| 733 | if (!opts) |
| 734 | return -ENOMEM; |
| 735 | |
| 736 | orig = opts; |
| 737 | |
Sebastian Andrzej Siewior | 90c161b | 2011-11-23 20:53:17 +0100 | [diff] [blame] | 738 | while ((ptr = strsep(&opts, ",\n")) != NULL) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 739 | if (!*ptr) |
| 740 | continue; |
| 741 | |
| 742 | token = match_token(ptr, tokens, args); |
| 743 | switch (token) { |
| 744 | case Opt_scsi_host_id: |
| 745 | if (phv->phv_mode == PHV_LLD_SCSI_HOST_NO) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 746 | pr_err("PSCSI[%d]: Unable to accept" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 747 | " scsi_host_id while phv_mode ==" |
| 748 | " PHV_LLD_SCSI_HOST_NO\n", |
| 749 | phv->phv_host_id); |
| 750 | ret = -EINVAL; |
| 751 | goto out; |
| 752 | } |
Joern Engel | ce31c1b | 2014-09-02 17:50:00 -0400 | [diff] [blame] | 753 | ret = match_int(args, &arg); |
| 754 | if (ret) |
| 755 | goto out; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 756 | pdv->pdv_host_id = arg; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 757 | pr_debug("PSCSI[%d]: Referencing SCSI Host ID:" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 758 | " %d\n", phv->phv_host_id, pdv->pdv_host_id); |
| 759 | pdv->pdv_flags |= PDF_HAS_VIRT_HOST_ID; |
| 760 | break; |
| 761 | case Opt_scsi_channel_id: |
Joern Engel | ce31c1b | 2014-09-02 17:50:00 -0400 | [diff] [blame] | 762 | ret = match_int(args, &arg); |
| 763 | if (ret) |
| 764 | goto out; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 765 | pdv->pdv_channel_id = arg; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 766 | pr_debug("PSCSI[%d]: Referencing SCSI Channel" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 767 | " ID: %d\n", phv->phv_host_id, |
| 768 | pdv->pdv_channel_id); |
| 769 | pdv->pdv_flags |= PDF_HAS_CHANNEL_ID; |
| 770 | break; |
| 771 | case Opt_scsi_target_id: |
Joern Engel | ce31c1b | 2014-09-02 17:50:00 -0400 | [diff] [blame] | 772 | ret = match_int(args, &arg); |
| 773 | if (ret) |
| 774 | goto out; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 775 | pdv->pdv_target_id = arg; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 776 | pr_debug("PSCSI[%d]: Referencing SCSI Target" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 777 | " ID: %d\n", phv->phv_host_id, |
| 778 | pdv->pdv_target_id); |
| 779 | pdv->pdv_flags |= PDF_HAS_TARGET_ID; |
| 780 | break; |
| 781 | case Opt_scsi_lun_id: |
Joern Engel | ce31c1b | 2014-09-02 17:50:00 -0400 | [diff] [blame] | 782 | ret = match_int(args, &arg); |
| 783 | if (ret) |
| 784 | goto out; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 785 | pdv->pdv_lun_id = arg; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 786 | pr_debug("PSCSI[%d]: Referencing SCSI LUN ID:" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 787 | " %d\n", phv->phv_host_id, pdv->pdv_lun_id); |
| 788 | pdv->pdv_flags |= PDF_HAS_LUN_ID; |
| 789 | break; |
| 790 | default: |
| 791 | break; |
| 792 | } |
| 793 | } |
| 794 | |
| 795 | out: |
| 796 | kfree(orig); |
| 797 | return (!ret) ? count : ret; |
| 798 | } |
| 799 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 800 | 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] | 801 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 802 | struct pscsi_hba_virt *phv = dev->se_hba->hba_ptr; |
| 803 | struct pscsi_dev_virt *pdv = PSCSI_DEV(dev); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 804 | struct scsi_device *sd = pdv->pdv_sd; |
| 805 | unsigned char host_id[16]; |
| 806 | ssize_t bl; |
| 807 | int i; |
| 808 | |
Stefan Hajnoczi | e6a8a41 | 2012-02-23 18:15:26 +0000 | [diff] [blame] | 809 | if (phv->phv_mode == PHV_VIRTUAL_HOST_ID) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 810 | snprintf(host_id, 16, "%d", pdv->pdv_host_id); |
| 811 | else |
| 812 | snprintf(host_id, 16, "PHBA Mode"); |
| 813 | |
| 814 | bl = sprintf(b, "SCSI Device Bus Location:" |
| 815 | " Channel ID: %d Target ID: %d LUN: %d Host ID: %s\n", |
| 816 | pdv->pdv_channel_id, pdv->pdv_target_id, pdv->pdv_lun_id, |
| 817 | host_id); |
| 818 | |
| 819 | if (sd) { |
| 820 | bl += sprintf(b + bl, " "); |
| 821 | bl += sprintf(b + bl, "Vendor: "); |
| 822 | for (i = 0; i < 8; i++) { |
| 823 | if (ISPRINT(sd->vendor[i])) /* printable character? */ |
| 824 | bl += sprintf(b + bl, "%c", sd->vendor[i]); |
| 825 | else |
| 826 | bl += sprintf(b + bl, " "); |
| 827 | } |
| 828 | bl += sprintf(b + bl, " Model: "); |
| 829 | for (i = 0; i < 16; i++) { |
| 830 | if (ISPRINT(sd->model[i])) /* printable character ? */ |
| 831 | bl += sprintf(b + bl, "%c", sd->model[i]); |
| 832 | else |
| 833 | bl += sprintf(b + bl, " "); |
| 834 | } |
| 835 | bl += sprintf(b + bl, " Rev: "); |
| 836 | for (i = 0; i < 4; i++) { |
| 837 | if (ISPRINT(sd->rev[i])) /* printable character ? */ |
| 838 | bl += sprintf(b + bl, "%c", sd->rev[i]); |
| 839 | else |
| 840 | bl += sprintf(b + bl, " "); |
| 841 | } |
| 842 | bl += sprintf(b + bl, "\n"); |
| 843 | } |
| 844 | return bl; |
| 845 | } |
| 846 | |
| 847 | static void pscsi_bi_endio(struct bio *bio, int error) |
| 848 | { |
| 849 | bio_put(bio); |
| 850 | } |
| 851 | |
Asias He | 2dbe10a | 2013-02-27 13:29:30 +0800 | [diff] [blame] | 852 | static inline struct bio *pscsi_get_bio(int nr_vecs) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 853 | { |
| 854 | struct bio *bio; |
| 855 | /* |
| 856 | * Use bio_malloc() following the comment in for bio -> struct request |
| 857 | * in block/blk-core.c:blk_make_request() |
| 858 | */ |
Asias He | 2dbe10a | 2013-02-27 13:29:30 +0800 | [diff] [blame] | 859 | bio = bio_kmalloc(GFP_KERNEL, nr_vecs); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 860 | if (!bio) { |
| 861 | pr_err("PSCSI: bio_kmalloc() failed\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 862 | return NULL; |
| 863 | } |
| 864 | bio->bi_end_io = pscsi_bi_endio; |
| 865 | |
| 866 | return bio; |
| 867 | } |
| 868 | |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 869 | static sense_reason_t |
| 870 | pscsi_map_sg(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents, |
| 871 | enum dma_data_direction data_direction, struct bio **hbio) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 872 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 873 | struct pscsi_dev_virt *pdv = PSCSI_DEV(cmd->se_dev); |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 874 | struct bio *bio = NULL, *tbio = NULL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 875 | struct page *page; |
| 876 | struct scatterlist *sg; |
Christoph Hellwig | 7a83aa4 | 2012-04-23 11:35:31 -0400 | [diff] [blame] | 877 | u32 data_len = cmd->data_length, i, len, bytes, off; |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 878 | int nr_pages = (cmd->data_length + sgl[0].offset + |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 879 | PAGE_SIZE - 1) >> PAGE_SHIFT; |
Nicholas Bellinger | 03e98c9 | 2011-11-04 02:36:16 -0700 | [diff] [blame] | 880 | int nr_vecs = 0, rc; |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 881 | int rw = (data_direction == DMA_TO_DEVICE); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 882 | |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 883 | *hbio = NULL; |
| 884 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 885 | pr_debug("PSCSI: nr_pages: %d\n", nr_pages); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 886 | |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 887 | for_each_sg(sgl, sg, sgl_nents, i) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 888 | page = sg_page(sg); |
| 889 | off = sg->offset; |
| 890 | len = sg->length; |
| 891 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 892 | 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] | 893 | page, len, off); |
| 894 | |
Asias He | 8f27d48 | 2013-03-19 12:55:16 +0800 | [diff] [blame] | 895 | /* |
| 896 | * We only have one page of data in each sg element, |
| 897 | * we can not cross a page boundary. |
| 898 | */ |
| 899 | if (off + len > PAGE_SIZE) |
| 900 | goto fail; |
| 901 | |
| 902 | if (len > 0 && data_len > 0) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 903 | bytes = min_t(unsigned int, len, PAGE_SIZE - off); |
| 904 | bytes = min(bytes, data_len); |
| 905 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 906 | if (!bio) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 907 | nr_vecs = min_t(int, BIO_MAX_PAGES, nr_pages); |
| 908 | nr_pages -= nr_vecs; |
| 909 | /* |
| 910 | * Calls bio_kmalloc() and sets bio->bi_end_io() |
| 911 | */ |
Andy Grover | a1d8b49 | 2011-05-02 17:12:10 -0700 | [diff] [blame] | 912 | bio = pscsi_get_bio(nr_vecs); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 913 | if (!bio) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 914 | goto fail; |
| 915 | |
| 916 | if (rw) |
| 917 | bio->bi_rw |= REQ_WRITE; |
| 918 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 919 | pr_debug("PSCSI: Allocated bio: %p," |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 920 | " dir: %s nr_vecs: %d\n", bio, |
| 921 | (rw) ? "rw" : "r", nr_vecs); |
| 922 | /* |
| 923 | * Set *hbio pointer to handle the case: |
| 924 | * nr_pages > BIO_MAX_PAGES, where additional |
| 925 | * bios need to be added to complete a given |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 926 | * command. |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 927 | */ |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 928 | if (!*hbio) |
| 929 | *hbio = tbio = bio; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 930 | else |
| 931 | tbio = tbio->bi_next = bio; |
| 932 | } |
| 933 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 934 | pr_debug("PSCSI: Calling bio_add_pc_page() i: %d" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 935 | " bio: %p page: %p len: %d off: %d\n", i, bio, |
| 936 | page, len, off); |
| 937 | |
| 938 | rc = bio_add_pc_page(pdv->pdv_sd->request_queue, |
| 939 | bio, page, bytes, off); |
| 940 | if (rc != bytes) |
| 941 | goto fail; |
| 942 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 943 | pr_debug("PSCSI: bio->bi_vcnt: %d nr_vecs: %d\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 944 | bio->bi_vcnt, nr_vecs); |
| 945 | |
| 946 | if (bio->bi_vcnt > nr_vecs) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 947 | pr_debug("PSCSI: Reached bio->bi_vcnt max:" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 948 | " %d i: %d bio: %p, allocating another" |
| 949 | " bio\n", bio->bi_vcnt, i, bio); |
| 950 | /* |
| 951 | * Clear the pointer so that another bio will |
| 952 | * be allocated with pscsi_get_bio() above, the |
| 953 | * current bio has already been set *tbio and |
| 954 | * bio->bi_next. |
| 955 | */ |
| 956 | bio = NULL; |
| 957 | } |
| 958 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 959 | data_len -= bytes; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 960 | } |
| 961 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 962 | |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 963 | return 0; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 964 | fail: |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 965 | while (*hbio) { |
| 966 | bio = *hbio; |
| 967 | *hbio = (*hbio)->bi_next; |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 968 | bio_endio(bio, 0); /* XXX: should be error */ |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 969 | } |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 970 | return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 971 | } |
| 972 | |
Christoph Hellwig | 3d6d720 | 2012-05-20 11:59:17 -0400 | [diff] [blame] | 973 | /* |
| 974 | * Clear a lun set in the cdb if the initiator talking to use spoke |
| 975 | * and old standards version, as we can't assume the underlying device |
| 976 | * won't choke up on it. |
| 977 | */ |
| 978 | static inline void pscsi_clear_cdb_lun(unsigned char *cdb) |
| 979 | { |
| 980 | switch (cdb[0]) { |
| 981 | case READ_10: /* SBC - RDProtect */ |
| 982 | case READ_12: /* SBC - RDProtect */ |
| 983 | case READ_16: /* SBC - RDProtect */ |
| 984 | case SEND_DIAGNOSTIC: /* SPC - SELF-TEST Code */ |
| 985 | case VERIFY: /* SBC - VRProtect */ |
| 986 | case VERIFY_16: /* SBC - VRProtect */ |
| 987 | case WRITE_VERIFY: /* SBC - VRProtect */ |
| 988 | case WRITE_VERIFY_12: /* SBC - VRProtect */ |
| 989 | case MAINTENANCE_IN: /* SPC - Parameter Data Format for SA RTPG */ |
| 990 | break; |
| 991 | default: |
| 992 | cdb[1] &= 0x1f; /* clear logical unit number */ |
| 993 | break; |
| 994 | } |
| 995 | } |
| 996 | |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 997 | static sense_reason_t |
| 998 | pscsi_parse_cdb(struct se_cmd *cmd) |
Christoph Hellwig | d6e0175 | 2012-05-20 11:59:14 -0400 | [diff] [blame] | 999 | { |
Christoph Hellwig | d6e0175 | 2012-05-20 11:59:14 -0400 | [diff] [blame] | 1000 | unsigned char *cdb = cmd->t_task_cdb; |
Christoph Hellwig | d6e0175 | 2012-05-20 11:59:14 -0400 | [diff] [blame] | 1001 | |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 1002 | if (cmd->se_cmd_flags & SCF_BIDI) |
| 1003 | return TCM_UNSUPPORTED_SCSI_OPCODE; |
Christoph Hellwig | d6e0175 | 2012-05-20 11:59:14 -0400 | [diff] [blame] | 1004 | |
Christoph Hellwig | 3d6d720 | 2012-05-20 11:59:17 -0400 | [diff] [blame] | 1005 | pscsi_clear_cdb_lun(cdb); |
| 1006 | |
Christoph Hellwig | 1fd032e | 2012-05-20 11:59:15 -0400 | [diff] [blame] | 1007 | /* |
Nicholas Bellinger | a3785c8 | 2012-05-30 14:47:18 -0700 | [diff] [blame] | 1008 | * For REPORT LUNS we always need to emulate the response, for everything |
| 1009 | * else the default for pSCSI is to pass the command to the underlying |
| 1010 | * LLD / physical hardware. |
Christoph Hellwig | 1fd032e | 2012-05-20 11:59:15 -0400 | [diff] [blame] | 1011 | */ |
| 1012 | switch (cdb[0]) { |
| 1013 | case REPORT_LUNS: |
Christoph Hellwig | e6c4219 | 2012-10-10 16:52:48 -0400 | [diff] [blame] | 1014 | cmd->execute_cmd = spc_emulate_report_luns; |
| 1015 | return 0; |
Christoph Hellwig | 1fd032e | 2012-05-20 11:59:15 -0400 | [diff] [blame] | 1016 | case READ_6: |
| 1017 | case READ_10: |
| 1018 | case READ_12: |
| 1019 | case READ_16: |
| 1020 | case WRITE_6: |
| 1021 | case WRITE_10: |
| 1022 | case WRITE_12: |
| 1023 | case WRITE_16: |
| 1024 | case WRITE_VERIFY: |
| 1025 | cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB; |
Christoph Hellwig | 0c2ad7d | 2012-06-17 18:40:52 -0400 | [diff] [blame] | 1026 | /* FALLTHROUGH*/ |
Christoph Hellwig | 1fd032e | 2012-05-20 11:59:15 -0400 | [diff] [blame] | 1027 | default: |
Christoph Hellwig | 0c2ad7d | 2012-06-17 18:40:52 -0400 | [diff] [blame] | 1028 | cmd->execute_cmd = pscsi_execute_cmd; |
Christoph Hellwig | 8de530a | 2012-10-07 10:55:52 -0400 | [diff] [blame] | 1029 | return 0; |
Christoph Hellwig | d6e0175 | 2012-05-20 11:59:14 -0400 | [diff] [blame] | 1030 | } |
Christoph Hellwig | d6e0175 | 2012-05-20 11:59:14 -0400 | [diff] [blame] | 1031 | } |
| 1032 | |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 1033 | static sense_reason_t |
| 1034 | pscsi_execute_cmd(struct se_cmd *cmd) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1035 | { |
Christoph Hellwig | 0c2ad7d | 2012-06-17 18:40:52 -0400 | [diff] [blame] | 1036 | struct scatterlist *sgl = cmd->t_data_sg; |
| 1037 | u32 sgl_nents = cmd->t_data_nents; |
| 1038 | enum dma_data_direction data_direction = cmd->data_direction; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1039 | struct pscsi_dev_virt *pdv = PSCSI_DEV(cmd->se_dev); |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1040 | struct pscsi_plugin_task *pt; |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 1041 | struct request *req; |
| 1042 | struct bio *hbio; |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 1043 | sense_reason_t ret; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1044 | |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1045 | /* |
| 1046 | * Dynamically alloc cdb space, since it may be larger than |
| 1047 | * TCM_MAX_COMMAND_SIZE |
| 1048 | */ |
| 1049 | pt = kzalloc(sizeof(*pt) + scsi_command_size(cmd->t_task_cdb), GFP_KERNEL); |
| 1050 | if (!pt) { |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 1051 | return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1052 | } |
| 1053 | cmd->priv = pt; |
| 1054 | |
Christoph Hellwig | ed3102c | 2012-04-23 11:35:29 -0400 | [diff] [blame] | 1055 | memcpy(pt->pscsi_cdb, cmd->t_task_cdb, |
| 1056 | scsi_command_size(cmd->t_task_cdb)); |
Christoph Hellwig | 485fd0d | 2011-10-12 11:09:12 -0400 | [diff] [blame] | 1057 | |
Christoph Hellwig | 64f1db3 | 2012-05-20 11:59:11 -0400 | [diff] [blame] | 1058 | if (!sgl) { |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 1059 | req = blk_get_request(pdv->pdv_sd->request_queue, |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1060 | (data_direction == DMA_TO_DEVICE), |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 1061 | GFP_KERNEL); |
Joe Lawrence | a492f07 | 2014-08-28 08:15:21 -0600 | [diff] [blame] | 1062 | if (IS_ERR(req)) { |
Dan Carpenter | fdb4c1f | 2013-08-15 08:55:41 +0300 | [diff] [blame] | 1063 | pr_err("PSCSI: blk_get_request() failed\n"); |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 1064 | ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1065 | goto fail; |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 1066 | } |
Jens Axboe | f27b087 | 2014-06-06 07:57:37 -0600 | [diff] [blame] | 1067 | |
| 1068 | blk_rq_set_block_pc(req); |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 1069 | } else { |
Christoph Hellwig | 7a83aa4 | 2012-04-23 11:35:31 -0400 | [diff] [blame] | 1070 | BUG_ON(!cmd->data_length); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1071 | |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1072 | ret = pscsi_map_sg(cmd, sgl, sgl_nents, data_direction, &hbio); |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 1073 | if (ret) |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1074 | goto fail; |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 1075 | |
| 1076 | req = blk_make_request(pdv->pdv_sd->request_queue, hbio, |
| 1077 | GFP_KERNEL); |
Dan Carpenter | ed327ed | 2011-11-02 08:48:15 -0700 | [diff] [blame] | 1078 | if (IS_ERR(req)) { |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 1079 | pr_err("pSCSI: blk_make_request() failed\n"); |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 1080 | ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1081 | goto fail_free_bio; |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 1082 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1083 | } |
| 1084 | |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 1085 | req->end_io = pscsi_req_done; |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1086 | req->end_io_data = cmd; |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 1087 | req->cmd_len = scsi_command_size(pt->pscsi_cdb); |
| 1088 | req->cmd = &pt->pscsi_cdb[0]; |
| 1089 | req->sense = &pt->pscsi_sense[0]; |
| 1090 | req->sense_len = 0; |
| 1091 | if (pdv->pdv_sd->type == TYPE_DISK) |
| 1092 | req->timeout = PS_TIMEOUT_DISK; |
| 1093 | else |
| 1094 | req->timeout = PS_TIMEOUT_OTHER; |
| 1095 | req->retries = PS_RETRY; |
| 1096 | |
| 1097 | blk_execute_rq_nowait(pdv->pdv_sd->request_queue, NULL, req, |
Christoph Hellwig | 68d81f4 | 2014-11-24 07:07:25 -0800 | [diff] [blame] | 1098 | (cmd->sam_task_attr == TCM_HEAD_TAG), |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 1099 | pscsi_req_done); |
| 1100 | |
Nicholas Bellinger | 03e98c9 | 2011-11-04 02:36:16 -0700 | [diff] [blame] | 1101 | return 0; |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 1102 | |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1103 | fail_free_bio: |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 1104 | while (hbio) { |
| 1105 | struct bio *bio = hbio; |
| 1106 | hbio = hbio->bi_next; |
Christoph Hellwig | 02b1a74 | 2011-09-25 14:56:32 -0400 | [diff] [blame] | 1107 | bio_endio(bio, 0); /* XXX: should be error */ |
| 1108 | } |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 1109 | ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1110 | fail: |
| 1111 | kfree(pt); |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 1112 | return ret; |
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_type(): |
| 1116 | * |
| 1117 | * |
| 1118 | */ |
| 1119 | static u32 pscsi_get_device_type(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 | |
Nicholas Bellinger | 215a8fe | 2015-02-27 03:54:13 -0800 | [diff] [blame] | 1124 | return (sd) ? sd->type : TYPE_NO_LUN; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1125 | } |
| 1126 | |
| 1127 | static sector_t pscsi_get_blocks(struct se_device *dev) |
| 1128 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1129 | struct pscsi_dev_virt *pdv = PSCSI_DEV(dev); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1130 | |
| 1131 | if (pdv->pdv_bd && pdv->pdv_bd->bd_part) |
| 1132 | return pdv->pdv_bd->bd_part->nr_sects; |
| 1133 | |
| 1134 | dump_stack(); |
| 1135 | return 0; |
| 1136 | } |
| 1137 | |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1138 | static void pscsi_req_done(struct request *req, int uptodate) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1139 | { |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1140 | struct se_cmd *cmd = req->end_io_data; |
| 1141 | struct pscsi_plugin_task *pt = cmd->priv; |
| 1142 | |
| 1143 | pt->pscsi_result = req->errors; |
| 1144 | pt->pscsi_resid = req->resid_len; |
| 1145 | |
| 1146 | cmd->scsi_status = status_byte(pt->pscsi_result) << 1; |
| 1147 | if (cmd->scsi_status) { |
| 1148 | pr_debug("PSCSI Status Byte exception at cmd: %p CDB:" |
| 1149 | " 0x%02x Result: 0x%08x\n", cmd, pt->pscsi_cdb[0], |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1150 | pt->pscsi_result); |
| 1151 | } |
| 1152 | |
| 1153 | switch (host_byte(pt->pscsi_result)) { |
| 1154 | case DID_OK: |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1155 | target_complete_cmd(cmd, cmd->scsi_status); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1156 | break; |
| 1157 | default: |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1158 | pr_debug("PSCSI Host Byte exception at cmd: %p CDB:" |
| 1159 | " 0x%02x Result: 0x%08x\n", cmd, pt->pscsi_cdb[0], |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1160 | pt->pscsi_result); |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1161 | target_complete_cmd(cmd, SAM_STAT_CHECK_CONDITION); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1162 | break; |
| 1163 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1164 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1165 | __blk_put_request(req->q, req); |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 1166 | kfree(pt); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1167 | } |
| 1168 | |
Nicholas Bellinger | 6cfb546 | 2014-11-28 05:26:18 +0000 | [diff] [blame] | 1169 | DEF_TB_DEV_ATTRIB_RO(pscsi, hw_pi_prot_type); |
| 1170 | TB_DEV_ATTR_RO(pscsi, hw_pi_prot_type); |
| 1171 | |
| 1172 | DEF_TB_DEV_ATTRIB_RO(pscsi, hw_block_size); |
| 1173 | TB_DEV_ATTR_RO(pscsi, hw_block_size); |
| 1174 | |
| 1175 | DEF_TB_DEV_ATTRIB_RO(pscsi, hw_max_sectors); |
| 1176 | TB_DEV_ATTR_RO(pscsi, hw_max_sectors); |
| 1177 | |
| 1178 | DEF_TB_DEV_ATTRIB_RO(pscsi, hw_queue_depth); |
| 1179 | TB_DEV_ATTR_RO(pscsi, hw_queue_depth); |
| 1180 | |
| 1181 | static struct configfs_attribute *pscsi_backend_dev_attrs[] = { |
| 1182 | &pscsi_dev_attrib_hw_pi_prot_type.attr, |
| 1183 | &pscsi_dev_attrib_hw_block_size.attr, |
| 1184 | &pscsi_dev_attrib_hw_max_sectors.attr, |
| 1185 | &pscsi_dev_attrib_hw_queue_depth.attr, |
| 1186 | NULL, |
| 1187 | }; |
| 1188 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1189 | static struct se_subsystem_api pscsi_template = { |
| 1190 | .name = "pscsi", |
| 1191 | .owner = THIS_MODULE, |
| 1192 | .transport_type = TRANSPORT_PLUGIN_PHBA_PDEV, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1193 | .attach_hba = pscsi_attach_hba, |
| 1194 | .detach_hba = pscsi_detach_hba, |
| 1195 | .pmode_enable_hba = pscsi_pmode_enable_hba, |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1196 | .alloc_device = pscsi_alloc_device, |
| 1197 | .configure_device = pscsi_configure_device, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1198 | .free_device = pscsi_free_device, |
| 1199 | .transport_complete = pscsi_transport_complete, |
Christoph Hellwig | d6e0175 | 2012-05-20 11:59:14 -0400 | [diff] [blame] | 1200 | .parse_cdb = pscsi_parse_cdb, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1201 | .set_configfs_dev_params = pscsi_set_configfs_dev_params, |
| 1202 | .show_configfs_dev_params = pscsi_show_configfs_dev_params, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1203 | .get_device_type = pscsi_get_device_type, |
| 1204 | .get_blocks = pscsi_get_blocks, |
| 1205 | }; |
| 1206 | |
| 1207 | static int __init pscsi_module_init(void) |
| 1208 | { |
Nicholas Bellinger | 6cfb546 | 2014-11-28 05:26:18 +0000 | [diff] [blame] | 1209 | struct target_backend_cits *tbc = &pscsi_template.tb_cits; |
| 1210 | |
| 1211 | target_core_setup_sub_cits(&pscsi_template); |
| 1212 | tbc->tb_dev_attrib_cit.ct_attrs = pscsi_backend_dev_attrs; |
| 1213 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1214 | return transport_subsystem_register(&pscsi_template); |
| 1215 | } |
| 1216 | |
Asias He | 63b91d5 | 2013-02-27 12:50:56 +0800 | [diff] [blame] | 1217 | static void __exit pscsi_module_exit(void) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1218 | { |
| 1219 | transport_subsystem_release(&pscsi_template); |
| 1220 | } |
| 1221 | |
| 1222 | MODULE_DESCRIPTION("TCM PSCSI subsystem plugin"); |
| 1223 | MODULE_AUTHOR("nab@Linux-iSCSI.org"); |
| 1224 | MODULE_LICENSE("GPL"); |
| 1225 | |
| 1226 | module_init(pscsi_module_init); |
| 1227 | module_exit(pscsi_module_exit); |