Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * vvvvvvvvvvvvvvvvvvvvvvv Original vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv |
| 3 | * Copyright (C) 1992 Eric Youngdale |
| 4 | * Simulate a host adapter with 2 disks attached. Do a lot of checking |
| 5 | * to make sure that we are not getting blocks mixed up, and PANIC if |
| 6 | * anything out of the ordinary is seen. |
| 7 | * ^^^^^^^^^^^^^^^^^^^^^^^ Original ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |
| 8 | * |
| 9 | * This version is more generic, simulating a variable number of disk |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 10 | * (or disk like devices) sharing a common amount of RAM. To be more |
| 11 | * realistic, the simulated devices have the transport attributes of |
| 12 | * SAS disks. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | * |
| 14 | * |
| 15 | * For documentation see http://www.torque.net/sg/sdebug26.html |
| 16 | * |
| 17 | * D. Gilbert (dpg) work for Magneto-Optical device test [20010421] |
| 18 | * dpg: work for devfs large number of disks [20010809] |
| 19 | * forked for lk 2.5 series [20011216, 20020101] |
| 20 | * use vmalloc() more inquiry+mode_sense [20020302] |
| 21 | * add timers for delayed responses [20020721] |
| 22 | * Patrick Mansfield <patmans@us.ibm.com> max_luns+scsi_level [20021031] |
| 23 | * Mike Anderson <andmike@us.ibm.com> sysfs work [20021118] |
| 24 | * dpg: change style of boot options to "scsi_debug.num_tgts=2" and |
| 25 | * module options to "modprobe scsi_debug num_tgts=2" [20021221] |
| 26 | */ |
| 27 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | #include <linux/module.h> |
| 29 | |
| 30 | #include <linux/kernel.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #include <linux/errno.h> |
| 32 | #include <linux/timer.h> |
| 33 | #include <linux/types.h> |
| 34 | #include <linux/string.h> |
| 35 | #include <linux/genhd.h> |
| 36 | #include <linux/fs.h> |
| 37 | #include <linux/init.h> |
| 38 | #include <linux/proc_fs.h> |
| 39 | #include <linux/smp_lock.h> |
| 40 | #include <linux/vmalloc.h> |
| 41 | #include <linux/moduleparam.h> |
| 42 | |
| 43 | #include <linux/blkdev.h> |
| 44 | #include "scsi.h" |
| 45 | #include <scsi/scsi_host.h> |
| 46 | #include <scsi/scsicam.h> |
| 47 | |
| 48 | #include <linux/stat.h> |
| 49 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | #include "scsi_logging.h" |
| 51 | #include "scsi_debug.h" |
| 52 | |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 53 | #define SCSI_DEBUG_VERSION "1.81" |
| 54 | static const char * scsi_debug_version_date = "20070104"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 56 | /* Additional Sense Code (ASC) */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 57 | #define NO_ADDITIONAL_SENSE 0x0 |
| 58 | #define LOGICAL_UNIT_NOT_READY 0x4 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | #define UNRECOVERED_READ_ERR 0x11 |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 60 | #define PARAMETER_LIST_LENGTH_ERR 0x1a |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | #define INVALID_OPCODE 0x20 |
| 62 | #define ADDR_OUT_OF_RANGE 0x21 |
| 63 | #define INVALID_FIELD_IN_CDB 0x24 |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 64 | #define INVALID_FIELD_IN_PARAM_LIST 0x26 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | #define POWERON_RESET 0x29 |
| 66 | #define SAVING_PARAMS_UNSUP 0x39 |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 67 | #define TRANSPORT_PROBLEM 0x4b |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 68 | #define THRESHOLD_EXCEEDED 0x5d |
| 69 | #define LOW_POWER_COND_ON 0x5e |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 71 | /* Additional Sense Code Qualifier (ASCQ) */ |
| 72 | #define ACK_NAK_TO 0x3 |
| 73 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | #define SDEBUG_TAGGED_QUEUING 0 /* 0 | MSG_SIMPLE_TAG | MSG_ORDERED_TAG */ |
| 75 | |
| 76 | /* Default values for driver parameters */ |
| 77 | #define DEF_NUM_HOST 1 |
| 78 | #define DEF_NUM_TGTS 1 |
| 79 | #define DEF_MAX_LUNS 1 |
| 80 | /* With these defaults, this driver will make 1 host with 1 target |
| 81 | * (id 0) containing 1 logical unit (lun 0). That is 1 device. |
| 82 | */ |
| 83 | #define DEF_DELAY 1 |
| 84 | #define DEF_DEV_SIZE_MB 8 |
| 85 | #define DEF_EVERY_NTH 0 |
| 86 | #define DEF_NUM_PARTS 0 |
| 87 | #define DEF_OPTS 0 |
| 88 | #define DEF_SCSI_LEVEL 5 /* INQUIRY, byte2 [5->SPC-3] */ |
| 89 | #define DEF_PTYPE 0 |
| 90 | #define DEF_D_SENSE 0 |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 91 | #define DEF_NO_LUN_0 0 |
| 92 | #define DEF_VIRTUAL_GB 0 |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 93 | #define DEF_FAKE_RW 0 |
| 94 | #define DEF_VPD_USE_HOSTNO 1 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | |
| 96 | /* bit mask values for scsi_debug_opts */ |
| 97 | #define SCSI_DEBUG_OPT_NOISE 1 |
| 98 | #define SCSI_DEBUG_OPT_MEDIUM_ERR 2 |
| 99 | #define SCSI_DEBUG_OPT_TIMEOUT 4 |
| 100 | #define SCSI_DEBUG_OPT_RECOVERED_ERR 8 |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 101 | #define SCSI_DEBUG_OPT_TRANSPORT_ERR 16 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | /* When "every_nth" > 0 then modulo "every_nth" commands: |
| 103 | * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set |
| 104 | * - a RECOVERED_ERROR is simulated on successful read and write |
| 105 | * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 106 | * - a TRANSPORT_ERROR is simulated on successful read and write |
| 107 | * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | * |
| 109 | * When "every_nth" < 0 then after "- every_nth" commands: |
| 110 | * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set |
| 111 | * - a RECOVERED_ERROR is simulated on successful read and write |
| 112 | * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 113 | * - a TRANSPORT_ERROR is simulated on successful read and write |
| 114 | * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | * This will continue until some other action occurs (e.g. the user |
| 116 | * writing a new value (other than -1 or 1) to every_nth via sysfs). |
| 117 | */ |
| 118 | |
| 119 | /* when 1==SCSI_DEBUG_OPT_MEDIUM_ERR, a medium error is simulated at this |
| 120 | * sector on read commands: */ |
| 121 | #define OPT_MEDIUM_ERR_ADDR 0x1234 /* that's sector 4660 in decimal */ |
| 122 | |
| 123 | /* If REPORT LUNS has luns >= 256 it can choose "flat space" (value 1) |
| 124 | * or "peripheral device" addressing (value 0) */ |
| 125 | #define SAM2_LUN_ADDRESS_METHOD 0 |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 126 | #define SAM2_WLUN_REPORT_LUNS 0xc101 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | |
| 128 | static int scsi_debug_add_host = DEF_NUM_HOST; |
| 129 | static int scsi_debug_delay = DEF_DELAY; |
| 130 | static int scsi_debug_dev_size_mb = DEF_DEV_SIZE_MB; |
| 131 | static int scsi_debug_every_nth = DEF_EVERY_NTH; |
| 132 | static int scsi_debug_max_luns = DEF_MAX_LUNS; |
| 133 | static int scsi_debug_num_parts = DEF_NUM_PARTS; |
| 134 | static int scsi_debug_num_tgts = DEF_NUM_TGTS; /* targets per host */ |
| 135 | static int scsi_debug_opts = DEF_OPTS; |
| 136 | static int scsi_debug_scsi_level = DEF_SCSI_LEVEL; |
| 137 | static int scsi_debug_ptype = DEF_PTYPE; /* SCSI peripheral type (0==disk) */ |
| 138 | static int scsi_debug_dsense = DEF_D_SENSE; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 139 | static int scsi_debug_no_lun_0 = DEF_NO_LUN_0; |
| 140 | static int scsi_debug_virtual_gb = DEF_VIRTUAL_GB; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 141 | static int scsi_debug_fake_rw = DEF_FAKE_RW; |
| 142 | static int scsi_debug_vpd_use_hostno = DEF_VPD_USE_HOSTNO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | |
| 144 | static int scsi_debug_cmnd_count = 0; |
| 145 | |
| 146 | #define DEV_READONLY(TGT) (0) |
| 147 | #define DEV_REMOVEABLE(TGT) (0) |
| 148 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 149 | static unsigned int sdebug_store_size; /* in bytes */ |
| 150 | static unsigned int sdebug_store_sectors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | static sector_t sdebug_capacity; /* in sectors */ |
| 152 | |
| 153 | /* old BIOS stuff, kernel may get rid of them but some mode sense pages |
| 154 | may still need them */ |
| 155 | static int sdebug_heads; /* heads per disk */ |
| 156 | static int sdebug_cylinders_per; /* cylinders per surface */ |
| 157 | static int sdebug_sectors_per; /* sectors per cylinder */ |
| 158 | |
| 159 | /* default sector size is 512 bytes, 2**9 bytes */ |
| 160 | #define POW2_SECT_SIZE 9 |
| 161 | #define SECT_SIZE (1 << POW2_SECT_SIZE) |
| 162 | #define SECT_SIZE_PER(TGT) SECT_SIZE |
| 163 | |
| 164 | #define SDEBUG_MAX_PARTS 4 |
| 165 | |
| 166 | #define SDEBUG_SENSE_LEN 32 |
| 167 | |
| 168 | struct sdebug_dev_info { |
| 169 | struct list_head dev_list; |
| 170 | unsigned char sense_buff[SDEBUG_SENSE_LEN]; /* weak nexus */ |
| 171 | unsigned int channel; |
| 172 | unsigned int target; |
| 173 | unsigned int lun; |
| 174 | struct sdebug_host_info *sdbg_host; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 175 | unsigned int wlun; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | char reset; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 177 | char stopped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | char used; |
| 179 | }; |
| 180 | |
| 181 | struct sdebug_host_info { |
| 182 | struct list_head host_list; |
| 183 | struct Scsi_Host *shost; |
| 184 | struct device dev; |
| 185 | struct list_head dev_info_list; |
| 186 | }; |
| 187 | |
| 188 | #define to_sdebug_host(d) \ |
| 189 | container_of(d, struct sdebug_host_info, dev) |
| 190 | |
| 191 | static LIST_HEAD(sdebug_host_list); |
| 192 | static DEFINE_SPINLOCK(sdebug_host_list_lock); |
| 193 | |
| 194 | typedef void (* done_funct_t) (struct scsi_cmnd *); |
| 195 | |
| 196 | struct sdebug_queued_cmd { |
| 197 | int in_use; |
| 198 | struct timer_list cmnd_timer; |
| 199 | done_funct_t done_funct; |
| 200 | struct scsi_cmnd * a_cmnd; |
| 201 | int scsi_result; |
| 202 | }; |
| 203 | static struct sdebug_queued_cmd queued_arr[SCSI_DEBUG_CANQUEUE]; |
| 204 | |
Christoph Hellwig | d0be4a7d | 2005-10-31 18:31:40 +0100 | [diff] [blame] | 205 | static struct scsi_host_template sdebug_driver_template = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | .proc_info = scsi_debug_proc_info, |
| 207 | .name = "SCSI DEBUG", |
| 208 | .info = scsi_debug_info, |
| 209 | .slave_alloc = scsi_debug_slave_alloc, |
| 210 | .slave_configure = scsi_debug_slave_configure, |
| 211 | .slave_destroy = scsi_debug_slave_destroy, |
| 212 | .ioctl = scsi_debug_ioctl, |
| 213 | .queuecommand = scsi_debug_queuecommand, |
| 214 | .eh_abort_handler = scsi_debug_abort, |
| 215 | .eh_bus_reset_handler = scsi_debug_bus_reset, |
| 216 | .eh_device_reset_handler = scsi_debug_device_reset, |
| 217 | .eh_host_reset_handler = scsi_debug_host_reset, |
| 218 | .bios_param = scsi_debug_biosparam, |
| 219 | .can_queue = SCSI_DEBUG_CANQUEUE, |
| 220 | .this_id = 7, |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 221 | .sg_tablesize = 256, |
| 222 | .cmd_per_lun = 16, |
| 223 | .max_sectors = 0xffff, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | .unchecked_isa_dma = 0, |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 225 | .use_clustering = ENABLE_CLUSTERING, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | .module = THIS_MODULE, |
| 227 | }; |
| 228 | |
| 229 | static unsigned char * fake_storep; /* ramdisk storage */ |
| 230 | |
| 231 | static int num_aborts = 0; |
| 232 | static int num_dev_resets = 0; |
| 233 | static int num_bus_resets = 0; |
| 234 | static int num_host_resets = 0; |
| 235 | |
| 236 | static DEFINE_SPINLOCK(queued_arr_lock); |
| 237 | static DEFINE_RWLOCK(atomic_rw); |
| 238 | |
| 239 | static char sdebug_proc_name[] = "scsi_debug"; |
| 240 | |
| 241 | static int sdebug_driver_probe(struct device *); |
| 242 | static int sdebug_driver_remove(struct device *); |
| 243 | static struct bus_type pseudo_lld_bus; |
| 244 | |
| 245 | static struct device_driver sdebug_driverfs_driver = { |
| 246 | .name = sdebug_proc_name, |
| 247 | .bus = &pseudo_lld_bus, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | }; |
| 249 | |
| 250 | static const int check_condition_result = |
| 251 | (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
| 252 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 253 | static unsigned char ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, |
| 254 | 0, 0, 0x2, 0x4b}; |
| 255 | static unsigned char iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, |
| 256 | 0, 0, 0x0, 0x0}; |
| 257 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | /* function declarations */ |
| 259 | static int resp_inquiry(struct scsi_cmnd * SCpnt, int target, |
| 260 | struct sdebug_dev_info * devip); |
| 261 | static int resp_requests(struct scsi_cmnd * SCpnt, |
| 262 | struct sdebug_dev_info * devip); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 263 | static int resp_start_stop(struct scsi_cmnd * scp, |
| 264 | struct sdebug_dev_info * devip); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 265 | static int resp_report_tgtpgs(struct scsi_cmnd * scp, |
| 266 | struct sdebug_dev_info * devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | static int resp_readcap(struct scsi_cmnd * SCpnt, |
| 268 | struct sdebug_dev_info * devip); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 269 | static int resp_readcap16(struct scsi_cmnd * SCpnt, |
| 270 | struct sdebug_dev_info * devip); |
| 271 | static int resp_mode_sense(struct scsi_cmnd * scp, int target, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | struct sdebug_dev_info * devip); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 273 | static int resp_mode_select(struct scsi_cmnd * scp, int mselect6, |
| 274 | struct sdebug_dev_info * devip); |
| 275 | static int resp_log_sense(struct scsi_cmnd * scp, |
| 276 | struct sdebug_dev_info * devip); |
| 277 | static int resp_read(struct scsi_cmnd * SCpnt, unsigned long long lba, |
| 278 | unsigned int num, struct sdebug_dev_info * devip); |
| 279 | static int resp_write(struct scsi_cmnd * SCpnt, unsigned long long lba, |
| 280 | unsigned int num, struct sdebug_dev_info * devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | static int resp_report_luns(struct scsi_cmnd * SCpnt, |
| 282 | struct sdebug_dev_info * devip); |
| 283 | static int fill_from_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr, |
| 284 | int arr_len); |
| 285 | static int fetch_to_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr, |
| 286 | int max_arr_len); |
| 287 | static void timer_intr_handler(unsigned long); |
| 288 | static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev); |
| 289 | static void mk_sense_buffer(struct sdebug_dev_info * devip, int key, |
| 290 | int asc, int asq); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 291 | static int check_readiness(struct scsi_cmnd * SCpnt, int reset_only, |
| 292 | struct sdebug_dev_info * devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | static int schedule_resp(struct scsi_cmnd * cmnd, |
| 294 | struct sdebug_dev_info * devip, |
| 295 | done_funct_t done, int scsi_result, int delta_jiff); |
| 296 | static void __init sdebug_build_parts(unsigned char * ramp); |
| 297 | static void __init init_all_queued(void); |
| 298 | static void stop_all_queued(void); |
| 299 | static int stop_queued_cmnd(struct scsi_cmnd * cmnd); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 300 | static int inquiry_evpd_83(unsigned char * arr, int port_group_id, |
| 301 | int target_dev_id, int dev_id_num, |
| 302 | const char * dev_id_str, int dev_id_str_len); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 303 | static int inquiry_evpd_88(unsigned char * arr, int target_dev_id); |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 304 | static int do_create_driverfs_files(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | static void do_remove_driverfs_files(void); |
| 306 | |
| 307 | static int sdebug_add_adapter(void); |
| 308 | static void sdebug_remove_adapter(void); |
| 309 | static void sdebug_max_tgts_luns(void); |
| 310 | |
| 311 | static struct device pseudo_primary; |
| 312 | static struct bus_type pseudo_lld_bus; |
| 313 | |
| 314 | |
| 315 | static |
| 316 | int scsi_debug_queuecommand(struct scsi_cmnd * SCpnt, done_funct_t done) |
| 317 | { |
| 318 | unsigned char *cmd = (unsigned char *) SCpnt->cmnd; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 319 | int len, k, j; |
| 320 | unsigned int num; |
| 321 | unsigned long long lba; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | int errsts = 0; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 323 | int target = SCpnt->device->id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | struct sdebug_dev_info * devip = NULL; |
| 325 | int inj_recovered = 0; |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 326 | int inj_transport = 0; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 327 | int delay_override = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | |
| 329 | if (done == NULL) |
| 330 | return 0; /* assume mid level reprocessing command */ |
| 331 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 332 | SCpnt->resid = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && cmd) { |
| 334 | printk(KERN_INFO "scsi_debug: cmd "); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 335 | for (k = 0, len = SCpnt->cmd_len; k < len; ++k) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | printk("%02x ", (int)cmd[k]); |
| 337 | printk("\n"); |
| 338 | } |
| 339 | if(target == sdebug_driver_template.this_id) { |
| 340 | printk(KERN_INFO "scsi_debug: initiator's id used as " |
| 341 | "target!\n"); |
| 342 | return schedule_resp(SCpnt, NULL, done, |
| 343 | DID_NO_CONNECT << 16, 0); |
| 344 | } |
| 345 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 346 | if ((SCpnt->device->lun >= scsi_debug_max_luns) && |
| 347 | (SCpnt->device->lun != SAM2_WLUN_REPORT_LUNS)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | return schedule_resp(SCpnt, NULL, done, |
| 349 | DID_NO_CONNECT << 16, 0); |
| 350 | devip = devInfoReg(SCpnt->device); |
| 351 | if (NULL == devip) |
| 352 | return schedule_resp(SCpnt, NULL, done, |
| 353 | DID_NO_CONNECT << 16, 0); |
| 354 | |
| 355 | if ((scsi_debug_every_nth != 0) && |
| 356 | (++scsi_debug_cmnd_count >= abs(scsi_debug_every_nth))) { |
| 357 | scsi_debug_cmnd_count = 0; |
| 358 | if (scsi_debug_every_nth < -1) |
| 359 | scsi_debug_every_nth = -1; |
| 360 | if (SCSI_DEBUG_OPT_TIMEOUT & scsi_debug_opts) |
| 361 | return 0; /* ignore command causing timeout */ |
| 362 | else if (SCSI_DEBUG_OPT_RECOVERED_ERR & scsi_debug_opts) |
| 363 | inj_recovered = 1; /* to reads and writes below */ |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 364 | else if (SCSI_DEBUG_OPT_TRANSPORT_ERR & scsi_debug_opts) |
| 365 | inj_transport = 1; /* to reads and writes below */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | } |
| 367 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 368 | if (devip->wlun) { |
| 369 | switch (*cmd) { |
| 370 | case INQUIRY: |
| 371 | case REQUEST_SENSE: |
| 372 | case TEST_UNIT_READY: |
| 373 | case REPORT_LUNS: |
| 374 | break; /* only allowable wlun commands */ |
| 375 | default: |
| 376 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 377 | printk(KERN_INFO "scsi_debug: Opcode: 0x%x " |
| 378 | "not supported for wlun\n", *cmd); |
| 379 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 380 | INVALID_OPCODE, 0); |
| 381 | errsts = check_condition_result; |
| 382 | return schedule_resp(SCpnt, devip, done, errsts, |
| 383 | 0); |
| 384 | } |
| 385 | } |
| 386 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | switch (*cmd) { |
| 388 | case INQUIRY: /* mandatory, ignore unit attention */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 389 | delay_override = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | errsts = resp_inquiry(SCpnt, target, devip); |
| 391 | break; |
| 392 | case REQUEST_SENSE: /* mandatory, ignore unit attention */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 393 | delay_override = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | errsts = resp_requests(SCpnt, devip); |
| 395 | break; |
| 396 | case REZERO_UNIT: /* actually this is REWIND for SSC */ |
| 397 | case START_STOP: |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 398 | errsts = resp_start_stop(SCpnt, devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 399 | break; |
| 400 | case ALLOW_MEDIUM_REMOVAL: |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 401 | if ((errsts = check_readiness(SCpnt, 1, devip))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | break; |
| 403 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 404 | printk(KERN_INFO "scsi_debug: Medium removal %s\n", |
| 405 | cmd[4] ? "inhibited" : "enabled"); |
| 406 | break; |
| 407 | case SEND_DIAGNOSTIC: /* mandatory */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 408 | errsts = check_readiness(SCpnt, 1, devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | break; |
| 410 | case TEST_UNIT_READY: /* mandatory */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 411 | delay_override = 1; |
| 412 | errsts = check_readiness(SCpnt, 0, devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | break; |
| 414 | case RESERVE: |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 415 | errsts = check_readiness(SCpnt, 1, devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | break; |
| 417 | case RESERVE_10: |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 418 | errsts = check_readiness(SCpnt, 1, devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | break; |
| 420 | case RELEASE: |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 421 | errsts = check_readiness(SCpnt, 1, devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | break; |
| 423 | case RELEASE_10: |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 424 | errsts = check_readiness(SCpnt, 1, devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | break; |
| 426 | case READ_CAPACITY: |
| 427 | errsts = resp_readcap(SCpnt, devip); |
| 428 | break; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 429 | case SERVICE_ACTION_IN: |
| 430 | if (SAI_READ_CAPACITY_16 != cmd[1]) { |
| 431 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 432 | INVALID_OPCODE, 0); |
| 433 | errsts = check_condition_result; |
| 434 | break; |
| 435 | } |
| 436 | errsts = resp_readcap16(SCpnt, devip); |
| 437 | break; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 438 | case MAINTENANCE_IN: |
| 439 | if (MI_REPORT_TARGET_PGS != cmd[1]) { |
| 440 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 441 | INVALID_OPCODE, 0); |
| 442 | errsts = check_condition_result; |
| 443 | break; |
| 444 | } |
| 445 | errsts = resp_report_tgtpgs(SCpnt, devip); |
| 446 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | case READ_16: |
| 448 | case READ_12: |
| 449 | case READ_10: |
| 450 | case READ_6: |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 451 | if ((errsts = check_readiness(SCpnt, 0, devip))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | break; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 453 | if (scsi_debug_fake_rw) |
| 454 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | if ((*cmd) == READ_16) { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 456 | for (lba = 0, j = 0; j < 8; ++j) { |
| 457 | if (j > 0) |
| 458 | lba <<= 8; |
| 459 | lba += cmd[2 + j]; |
| 460 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | num = cmd[13] + (cmd[12] << 8) + |
| 462 | (cmd[11] << 16) + (cmd[10] << 24); |
| 463 | } else if ((*cmd) == READ_12) { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 464 | lba = cmd[5] + (cmd[4] << 8) + |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | (cmd[3] << 16) + (cmd[2] << 24); |
| 466 | num = cmd[9] + (cmd[8] << 8) + |
| 467 | (cmd[7] << 16) + (cmd[6] << 24); |
| 468 | } else if ((*cmd) == READ_10) { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 469 | lba = cmd[5] + (cmd[4] << 8) + |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | (cmd[3] << 16) + (cmd[2] << 24); |
| 471 | num = cmd[8] + (cmd[7] << 8); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 472 | } else { /* READ (6) */ |
| 473 | lba = cmd[3] + (cmd[2] << 8) + |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | ((cmd[1] & 0x1f) << 16); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 475 | num = (0 == cmd[4]) ? 256 : cmd[4]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 477 | errsts = resp_read(SCpnt, lba, num, devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | if (inj_recovered && (0 == errsts)) { |
| 479 | mk_sense_buffer(devip, RECOVERED_ERROR, |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 480 | THRESHOLD_EXCEEDED, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | errsts = check_condition_result; |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 482 | } else if (inj_transport && (0 == errsts)) { |
| 483 | mk_sense_buffer(devip, ABORTED_COMMAND, |
| 484 | TRANSPORT_PROBLEM, ACK_NAK_TO); |
| 485 | errsts = check_condition_result; |
| 486 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | break; |
| 488 | case REPORT_LUNS: /* mandatory, ignore unit attention */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 489 | delay_override = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 490 | errsts = resp_report_luns(SCpnt, devip); |
| 491 | break; |
| 492 | case VERIFY: /* 10 byte SBC-2 command */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 493 | errsts = check_readiness(SCpnt, 0, devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | break; |
| 495 | case WRITE_16: |
| 496 | case WRITE_12: |
| 497 | case WRITE_10: |
| 498 | case WRITE_6: |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 499 | if ((errsts = check_readiness(SCpnt, 0, devip))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | break; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 501 | if (scsi_debug_fake_rw) |
| 502 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | if ((*cmd) == WRITE_16) { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 504 | for (lba = 0, j = 0; j < 8; ++j) { |
| 505 | if (j > 0) |
| 506 | lba <<= 8; |
| 507 | lba += cmd[2 + j]; |
| 508 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | num = cmd[13] + (cmd[12] << 8) + |
| 510 | (cmd[11] << 16) + (cmd[10] << 24); |
| 511 | } else if ((*cmd) == WRITE_12) { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 512 | lba = cmd[5] + (cmd[4] << 8) + |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | (cmd[3] << 16) + (cmd[2] << 24); |
| 514 | num = cmd[9] + (cmd[8] << 8) + |
| 515 | (cmd[7] << 16) + (cmd[6] << 24); |
| 516 | } else if ((*cmd) == WRITE_10) { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 517 | lba = cmd[5] + (cmd[4] << 8) + |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 518 | (cmd[3] << 16) + (cmd[2] << 24); |
| 519 | num = cmd[8] + (cmd[7] << 8); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 520 | } else { /* WRITE (6) */ |
| 521 | lba = cmd[3] + (cmd[2] << 8) + |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 522 | ((cmd[1] & 0x1f) << 16); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 523 | num = (0 == cmd[4]) ? 256 : cmd[4]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 525 | errsts = resp_write(SCpnt, lba, num, devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | if (inj_recovered && (0 == errsts)) { |
| 527 | mk_sense_buffer(devip, RECOVERED_ERROR, |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 528 | THRESHOLD_EXCEEDED, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | errsts = check_condition_result; |
| 530 | } |
| 531 | break; |
| 532 | case MODE_SENSE: |
| 533 | case MODE_SENSE_10: |
| 534 | errsts = resp_mode_sense(SCpnt, target, devip); |
| 535 | break; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 536 | case MODE_SELECT: |
| 537 | errsts = resp_mode_select(SCpnt, 1, devip); |
| 538 | break; |
| 539 | case MODE_SELECT_10: |
| 540 | errsts = resp_mode_select(SCpnt, 0, devip); |
| 541 | break; |
| 542 | case LOG_SENSE: |
| 543 | errsts = resp_log_sense(SCpnt, devip); |
| 544 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | case SYNCHRONIZE_CACHE: |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 546 | delay_override = 1; |
| 547 | errsts = check_readiness(SCpnt, 0, devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | break; |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 549 | case WRITE_BUFFER: |
| 550 | errsts = check_readiness(SCpnt, 1, devip); |
| 551 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | default: |
| 553 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 554 | printk(KERN_INFO "scsi_debug: Opcode: 0x%x not " |
| 555 | "supported\n", *cmd); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 556 | if ((errsts = check_readiness(SCpnt, 1, devip))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | break; /* Unit attention takes precedence */ |
| 558 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_OPCODE, 0); |
| 559 | errsts = check_condition_result; |
| 560 | break; |
| 561 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 562 | return schedule_resp(SCpnt, devip, done, errsts, |
| 563 | (delay_override ? 0 : scsi_debug_delay)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | } |
| 565 | |
| 566 | static int scsi_debug_ioctl(struct scsi_device *dev, int cmd, void __user *arg) |
| 567 | { |
| 568 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { |
| 569 | printk(KERN_INFO "scsi_debug: ioctl: cmd=0x%x\n", cmd); |
| 570 | } |
| 571 | return -EINVAL; |
| 572 | /* return -ENOTTY; // correct return but upsets fdisk */ |
| 573 | } |
| 574 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 575 | static int check_readiness(struct scsi_cmnd * SCpnt, int reset_only, |
| 576 | struct sdebug_dev_info * devip) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | { |
| 578 | if (devip->reset) { |
| 579 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 580 | printk(KERN_INFO "scsi_debug: Reporting Unit " |
| 581 | "attention: power on reset\n"); |
| 582 | devip->reset = 0; |
| 583 | mk_sense_buffer(devip, UNIT_ATTENTION, POWERON_RESET, 0); |
| 584 | return check_condition_result; |
| 585 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 586 | if ((0 == reset_only) && devip->stopped) { |
| 587 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 588 | printk(KERN_INFO "scsi_debug: Reporting Not " |
| 589 | "ready: initializing command required\n"); |
| 590 | mk_sense_buffer(devip, NOT_READY, LOGICAL_UNIT_NOT_READY, |
| 591 | 0x2); |
| 592 | return check_condition_result; |
| 593 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 594 | return 0; |
| 595 | } |
| 596 | |
| 597 | /* Returns 0 if ok else (DID_ERROR << 16). Sets scp->resid . */ |
| 598 | static int fill_from_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr, |
| 599 | int arr_len) |
| 600 | { |
| 601 | int k, req_len, act_len, len, active; |
| 602 | void * kaddr; |
| 603 | void * kaddr_off; |
| 604 | struct scatterlist * sgpnt; |
| 605 | |
| 606 | if (0 == scp->request_bufflen) |
| 607 | return 0; |
| 608 | if (NULL == scp->request_buffer) |
| 609 | return (DID_ERROR << 16); |
| 610 | if (! ((scp->sc_data_direction == DMA_BIDIRECTIONAL) || |
| 611 | (scp->sc_data_direction == DMA_FROM_DEVICE))) |
| 612 | return (DID_ERROR << 16); |
| 613 | if (0 == scp->use_sg) { |
| 614 | req_len = scp->request_bufflen; |
| 615 | act_len = (req_len < arr_len) ? req_len : arr_len; |
| 616 | memcpy(scp->request_buffer, arr, act_len); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 617 | if (scp->resid) |
| 618 | scp->resid -= act_len; |
| 619 | else |
| 620 | scp->resid = req_len - act_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 621 | return 0; |
| 622 | } |
| 623 | sgpnt = (struct scatterlist *)scp->request_buffer; |
| 624 | active = 1; |
| 625 | for (k = 0, req_len = 0, act_len = 0; k < scp->use_sg; ++k, ++sgpnt) { |
| 626 | if (active) { |
| 627 | kaddr = (unsigned char *) |
| 628 | kmap_atomic(sgpnt->page, KM_USER0); |
| 629 | if (NULL == kaddr) |
| 630 | return (DID_ERROR << 16); |
| 631 | kaddr_off = (unsigned char *)kaddr + sgpnt->offset; |
| 632 | len = sgpnt->length; |
| 633 | if ((req_len + len) > arr_len) { |
| 634 | active = 0; |
| 635 | len = arr_len - req_len; |
| 636 | } |
| 637 | memcpy(kaddr_off, arr + req_len, len); |
| 638 | kunmap_atomic(kaddr, KM_USER0); |
| 639 | act_len += len; |
| 640 | } |
| 641 | req_len += sgpnt->length; |
| 642 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 643 | if (scp->resid) |
| 644 | scp->resid -= act_len; |
| 645 | else |
| 646 | scp->resid = req_len - act_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 647 | return 0; |
| 648 | } |
| 649 | |
| 650 | /* Returns number of bytes fetched into 'arr' or -1 if error. */ |
| 651 | static int fetch_to_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr, |
| 652 | int max_arr_len) |
| 653 | { |
| 654 | int k, req_len, len, fin; |
| 655 | void * kaddr; |
| 656 | void * kaddr_off; |
| 657 | struct scatterlist * sgpnt; |
| 658 | |
| 659 | if (0 == scp->request_bufflen) |
| 660 | return 0; |
| 661 | if (NULL == scp->request_buffer) |
| 662 | return -1; |
| 663 | if (! ((scp->sc_data_direction == DMA_BIDIRECTIONAL) || |
| 664 | (scp->sc_data_direction == DMA_TO_DEVICE))) |
| 665 | return -1; |
| 666 | if (0 == scp->use_sg) { |
| 667 | req_len = scp->request_bufflen; |
| 668 | len = (req_len < max_arr_len) ? req_len : max_arr_len; |
| 669 | memcpy(arr, scp->request_buffer, len); |
| 670 | return len; |
| 671 | } |
| 672 | sgpnt = (struct scatterlist *)scp->request_buffer; |
| 673 | for (k = 0, req_len = 0, fin = 0; k < scp->use_sg; ++k, ++sgpnt) { |
| 674 | kaddr = (unsigned char *)kmap_atomic(sgpnt->page, KM_USER0); |
| 675 | if (NULL == kaddr) |
| 676 | return -1; |
| 677 | kaddr_off = (unsigned char *)kaddr + sgpnt->offset; |
| 678 | len = sgpnt->length; |
| 679 | if ((req_len + len) > max_arr_len) { |
| 680 | len = max_arr_len - req_len; |
| 681 | fin = 1; |
| 682 | } |
| 683 | memcpy(arr + req_len, kaddr_off, len); |
| 684 | kunmap_atomic(kaddr, KM_USER0); |
| 685 | if (fin) |
| 686 | return req_len + len; |
| 687 | req_len += sgpnt->length; |
| 688 | } |
| 689 | return req_len; |
| 690 | } |
| 691 | |
| 692 | |
| 693 | static const char * inq_vendor_id = "Linux "; |
| 694 | static const char * inq_product_id = "scsi_debug "; |
| 695 | static const char * inq_product_rev = "0004"; |
| 696 | |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 697 | static int inquiry_evpd_83(unsigned char * arr, int port_group_id, |
| 698 | int target_dev_id, int dev_id_num, |
| 699 | const char * dev_id_str, |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 700 | int dev_id_str_len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 702 | int num, port_a; |
| 703 | char b[32]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 704 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 705 | port_a = target_dev_id + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | /* T10 vendor identifier field format (faked) */ |
| 707 | arr[0] = 0x2; /* ASCII */ |
| 708 | arr[1] = 0x1; |
| 709 | arr[2] = 0x0; |
| 710 | memcpy(&arr[4], inq_vendor_id, 8); |
| 711 | memcpy(&arr[12], inq_product_id, 16); |
| 712 | memcpy(&arr[28], dev_id_str, dev_id_str_len); |
| 713 | num = 8 + 16 + dev_id_str_len; |
| 714 | arr[3] = num; |
| 715 | num += 4; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 716 | if (dev_id_num >= 0) { |
| 717 | /* NAA-5, Logical unit identifier (binary) */ |
| 718 | arr[num++] = 0x1; /* binary (not necessarily sas) */ |
| 719 | arr[num++] = 0x3; /* PIV=0, lu, naa */ |
| 720 | arr[num++] = 0x0; |
| 721 | arr[num++] = 0x8; |
| 722 | arr[num++] = 0x53; /* naa-5 ieee company id=0x333333 (fake) */ |
| 723 | arr[num++] = 0x33; |
| 724 | arr[num++] = 0x33; |
| 725 | arr[num++] = 0x30; |
| 726 | arr[num++] = (dev_id_num >> 24); |
| 727 | arr[num++] = (dev_id_num >> 16) & 0xff; |
| 728 | arr[num++] = (dev_id_num >> 8) & 0xff; |
| 729 | arr[num++] = dev_id_num & 0xff; |
| 730 | /* Target relative port number */ |
| 731 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 732 | arr[num++] = 0x94; /* PIV=1, target port, rel port */ |
| 733 | arr[num++] = 0x0; /* reserved */ |
| 734 | arr[num++] = 0x4; /* length */ |
| 735 | arr[num++] = 0x0; /* reserved */ |
| 736 | arr[num++] = 0x0; /* reserved */ |
| 737 | arr[num++] = 0x0; |
| 738 | arr[num++] = 0x1; /* relative port A */ |
| 739 | } |
| 740 | /* NAA-5, Target port identifier */ |
| 741 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 742 | arr[num++] = 0x93; /* piv=1, target port, naa */ |
| 743 | arr[num++] = 0x0; |
| 744 | arr[num++] = 0x8; |
| 745 | arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ |
| 746 | arr[num++] = 0x22; |
| 747 | arr[num++] = 0x22; |
| 748 | arr[num++] = 0x20; |
| 749 | arr[num++] = (port_a >> 24); |
| 750 | arr[num++] = (port_a >> 16) & 0xff; |
| 751 | arr[num++] = (port_a >> 8) & 0xff; |
| 752 | arr[num++] = port_a & 0xff; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 753 | /* NAA-5, Target port group identifier */ |
| 754 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 755 | arr[num++] = 0x95; /* piv=1, target port group id */ |
| 756 | arr[num++] = 0x0; |
| 757 | arr[num++] = 0x4; |
| 758 | arr[num++] = 0; |
| 759 | arr[num++] = 0; |
| 760 | arr[num++] = (port_group_id >> 8) & 0xff; |
| 761 | arr[num++] = port_group_id & 0xff; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 762 | /* NAA-5, Target device identifier */ |
| 763 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 764 | arr[num++] = 0xa3; /* piv=1, target device, naa */ |
| 765 | arr[num++] = 0x0; |
| 766 | arr[num++] = 0x8; |
| 767 | arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ |
| 768 | arr[num++] = 0x22; |
| 769 | arr[num++] = 0x22; |
| 770 | arr[num++] = 0x20; |
| 771 | arr[num++] = (target_dev_id >> 24); |
| 772 | arr[num++] = (target_dev_id >> 16) & 0xff; |
| 773 | arr[num++] = (target_dev_id >> 8) & 0xff; |
| 774 | arr[num++] = target_dev_id & 0xff; |
| 775 | /* SCSI name string: Target device identifier */ |
| 776 | arr[num++] = 0x63; /* proto=sas, UTF-8 */ |
| 777 | arr[num++] = 0xa8; /* piv=1, target device, SCSI name string */ |
| 778 | arr[num++] = 0x0; |
| 779 | arr[num++] = 24; |
| 780 | memcpy(arr + num, "naa.52222220", 12); |
| 781 | num += 12; |
| 782 | snprintf(b, sizeof(b), "%08X", target_dev_id); |
| 783 | memcpy(arr + num, b, 8); |
| 784 | num += 8; |
| 785 | memset(arr + num, 0, 4); |
| 786 | num += 4; |
| 787 | return num; |
| 788 | } |
| 789 | |
| 790 | |
| 791 | static unsigned char vpd84_data[] = { |
| 792 | /* from 4th byte */ 0x22,0x22,0x22,0x0,0xbb,0x0, |
| 793 | 0x22,0x22,0x22,0x0,0xbb,0x1, |
| 794 | 0x22,0x22,0x22,0x0,0xbb,0x2, |
| 795 | }; |
| 796 | |
| 797 | static int inquiry_evpd_84(unsigned char * arr) |
| 798 | { |
| 799 | memcpy(arr, vpd84_data, sizeof(vpd84_data)); |
| 800 | return sizeof(vpd84_data); |
| 801 | } |
| 802 | |
| 803 | static int inquiry_evpd_85(unsigned char * arr) |
| 804 | { |
| 805 | int num = 0; |
| 806 | const char * na1 = "https://www.kernel.org/config"; |
| 807 | const char * na2 = "http://www.kernel.org/log"; |
| 808 | int plen, olen; |
| 809 | |
| 810 | arr[num++] = 0x1; /* lu, storage config */ |
| 811 | arr[num++] = 0x0; /* reserved */ |
| 812 | arr[num++] = 0x0; |
| 813 | olen = strlen(na1); |
| 814 | plen = olen + 1; |
| 815 | if (plen % 4) |
| 816 | plen = ((plen / 4) + 1) * 4; |
| 817 | arr[num++] = plen; /* length, null termianted, padded */ |
| 818 | memcpy(arr + num, na1, olen); |
| 819 | memset(arr + num + olen, 0, plen - olen); |
| 820 | num += plen; |
| 821 | |
| 822 | arr[num++] = 0x4; /* lu, logging */ |
| 823 | arr[num++] = 0x0; /* reserved */ |
| 824 | arr[num++] = 0x0; |
| 825 | olen = strlen(na2); |
| 826 | plen = olen + 1; |
| 827 | if (plen % 4) |
| 828 | plen = ((plen / 4) + 1) * 4; |
| 829 | arr[num++] = plen; /* length, null terminated, padded */ |
| 830 | memcpy(arr + num, na2, olen); |
| 831 | memset(arr + num + olen, 0, plen - olen); |
| 832 | num += plen; |
| 833 | |
| 834 | return num; |
| 835 | } |
| 836 | |
| 837 | /* SCSI ports VPD page */ |
| 838 | static int inquiry_evpd_88(unsigned char * arr, int target_dev_id) |
| 839 | { |
| 840 | int num = 0; |
| 841 | int port_a, port_b; |
| 842 | |
| 843 | port_a = target_dev_id + 1; |
| 844 | port_b = port_a + 1; |
| 845 | arr[num++] = 0x0; /* reserved */ |
| 846 | arr[num++] = 0x0; /* reserved */ |
| 847 | arr[num++] = 0x0; |
| 848 | arr[num++] = 0x1; /* relative port 1 (primary) */ |
| 849 | memset(arr + num, 0, 6); |
| 850 | num += 6; |
| 851 | arr[num++] = 0x0; |
| 852 | arr[num++] = 12; /* length tp descriptor */ |
| 853 | /* naa-5 target port identifier (A) */ |
| 854 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 855 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ |
| 856 | arr[num++] = 0x0; /* reserved */ |
| 857 | arr[num++] = 0x8; /* length */ |
| 858 | arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ |
| 859 | arr[num++] = 0x22; |
| 860 | arr[num++] = 0x22; |
| 861 | arr[num++] = 0x20; |
| 862 | arr[num++] = (port_a >> 24); |
| 863 | arr[num++] = (port_a >> 16) & 0xff; |
| 864 | arr[num++] = (port_a >> 8) & 0xff; |
| 865 | arr[num++] = port_a & 0xff; |
| 866 | |
| 867 | arr[num++] = 0x0; /* reserved */ |
| 868 | arr[num++] = 0x0; /* reserved */ |
| 869 | arr[num++] = 0x0; |
| 870 | arr[num++] = 0x2; /* relative port 2 (secondary) */ |
| 871 | memset(arr + num, 0, 6); |
| 872 | num += 6; |
| 873 | arr[num++] = 0x0; |
| 874 | arr[num++] = 12; /* length tp descriptor */ |
| 875 | /* naa-5 target port identifier (B) */ |
| 876 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 877 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ |
| 878 | arr[num++] = 0x0; /* reserved */ |
| 879 | arr[num++] = 0x8; /* length */ |
| 880 | arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ |
| 881 | arr[num++] = 0x22; |
| 882 | arr[num++] = 0x22; |
| 883 | arr[num++] = 0x20; |
| 884 | arr[num++] = (port_b >> 24); |
| 885 | arr[num++] = (port_b >> 16) & 0xff; |
| 886 | arr[num++] = (port_b >> 8) & 0xff; |
| 887 | arr[num++] = port_b & 0xff; |
| 888 | |
| 889 | return num; |
| 890 | } |
| 891 | |
| 892 | |
| 893 | static unsigned char vpd89_data[] = { |
| 894 | /* from 4th byte */ 0,0,0,0, |
| 895 | 'l','i','n','u','x',' ',' ',' ', |
| 896 | 'S','A','T',' ','s','c','s','i','_','d','e','b','u','g',' ',' ', |
| 897 | '1','2','3','4', |
| 898 | 0x34,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0, |
| 899 | 0xec,0,0,0, |
| 900 | 0x5a,0xc,0xff,0x3f,0x37,0xc8,0x10,0,0,0,0,0,0x3f,0,0,0, |
| 901 | 0,0,0,0,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x20,0x20,0x20,0x20, |
| 902 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0,0,0,0x40,0x4,0,0x2e,0x33, |
| 903 | 0x38,0x31,0x20,0x20,0x20,0x20,0x54,0x53,0x38,0x33,0x30,0x30,0x33,0x31, |
| 904 | 0x53,0x41, |
| 905 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, |
| 906 | 0x20,0x20, |
| 907 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, |
| 908 | 0x10,0x80, |
| 909 | 0,0,0,0x2f,0,0,0,0x2,0,0x2,0x7,0,0xff,0xff,0x1,0, |
| 910 | 0x3f,0,0xc1,0xff,0x3e,0,0x10,0x1,0xb0,0xf8,0x50,0x9,0,0,0x7,0, |
| 911 | 0x3,0,0x78,0,0x78,0,0xf0,0,0x78,0,0,0,0,0,0,0, |
| 912 | 0,0,0,0,0,0,0,0,0x2,0,0,0,0,0,0,0, |
| 913 | 0x7e,0,0x1b,0,0x6b,0x34,0x1,0x7d,0x3,0x40,0x69,0x34,0x1,0x3c,0x3,0x40, |
| 914 | 0x7f,0x40,0,0,0,0,0xfe,0xfe,0,0,0,0,0,0xfe,0,0, |
| 915 | 0,0,0,0,0,0,0,0,0xb0,0xf8,0x50,0x9,0,0,0,0, |
| 916 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 917 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 918 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 919 | 0x1,0,0xb0,0xf8,0x50,0x9,0xb0,0xf8,0x50,0x9,0x20,0x20,0x2,0,0xb6,0x42, |
| 920 | 0,0x80,0x8a,0,0x6,0x3c,0xa,0x3c,0xff,0xff,0xc6,0x7,0,0x1,0,0x8, |
| 921 | 0xf0,0xf,0,0x10,0x2,0,0x30,0,0,0,0,0,0,0,0x6,0xfe, |
| 922 | 0,0,0x2,0,0x50,0,0x8a,0,0x4f,0x95,0,0,0x21,0,0xb,0, |
| 923 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 924 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 925 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 926 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 927 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 928 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 929 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 930 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 931 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 932 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 933 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 934 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0xa5,0x51, |
| 935 | }; |
| 936 | |
| 937 | static int inquiry_evpd_89(unsigned char * arr) |
| 938 | { |
| 939 | memcpy(arr, vpd89_data, sizeof(vpd89_data)); |
| 940 | return sizeof(vpd89_data); |
| 941 | } |
| 942 | |
| 943 | |
| 944 | static unsigned char vpdb0_data[] = { |
| 945 | /* from 4th byte */ 0,0,0,4, |
| 946 | 0,0,0x4,0, |
| 947 | 0,0,0,64, |
| 948 | }; |
| 949 | |
| 950 | static int inquiry_evpd_b0(unsigned char * arr) |
| 951 | { |
| 952 | memcpy(arr, vpdb0_data, sizeof(vpdb0_data)); |
| 953 | if (sdebug_store_sectors > 0x400) { |
| 954 | arr[4] = (sdebug_store_sectors >> 24) & 0xff; |
| 955 | arr[5] = (sdebug_store_sectors >> 16) & 0xff; |
| 956 | arr[6] = (sdebug_store_sectors >> 8) & 0xff; |
| 957 | arr[7] = sdebug_store_sectors & 0xff; |
| 958 | } |
| 959 | return sizeof(vpdb0_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 960 | } |
| 961 | |
| 962 | |
| 963 | #define SDEBUG_LONG_INQ_SZ 96 |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 964 | #define SDEBUG_MAX_INQ_ARR_SZ 584 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 965 | |
| 966 | static int resp_inquiry(struct scsi_cmnd * scp, int target, |
| 967 | struct sdebug_dev_info * devip) |
| 968 | { |
| 969 | unsigned char pq_pdt; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 970 | unsigned char * arr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 971 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 972 | int alloc_len, n, ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 973 | |
| 974 | alloc_len = (cmd[3] << 8) + cmd[4]; |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 975 | arr = kzalloc(SDEBUG_MAX_INQ_ARR_SZ, GFP_ATOMIC); |
| 976 | if (! arr) |
| 977 | return DID_REQUEUE << 16; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 978 | if (devip->wlun) |
| 979 | pq_pdt = 0x1e; /* present, wlun */ |
| 980 | else if (scsi_debug_no_lun_0 && (0 == devip->lun)) |
| 981 | pq_pdt = 0x7f; /* not present, no device type */ |
| 982 | else |
| 983 | pq_pdt = (scsi_debug_ptype & 0x1f); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 984 | arr[0] = pq_pdt; |
| 985 | if (0x2 & cmd[1]) { /* CMDDT bit set */ |
| 986 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 987 | 0); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 988 | kfree(arr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 989 | return check_condition_result; |
| 990 | } else if (0x1 & cmd[1]) { /* EVPD bit set */ |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 991 | int lu_id_num, port_group_id, target_dev_id, len; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 992 | char lu_id_str[6]; |
| 993 | int host_no = devip->sdbg_host->shost->host_no; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 994 | |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 995 | port_group_id = (((host_no + 1) & 0x7f) << 8) + |
| 996 | (devip->channel & 0x7f); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 997 | if (0 == scsi_debug_vpd_use_hostno) |
| 998 | host_no = 0; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 999 | lu_id_num = devip->wlun ? -1 : (((host_no + 1) * 2000) + |
| 1000 | (devip->target * 1000) + devip->lun); |
| 1001 | target_dev_id = ((host_no + 1) * 2000) + |
| 1002 | (devip->target * 1000) - 3; |
| 1003 | len = scnprintf(lu_id_str, 6, "%d", lu_id_num); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1004 | if (0 == cmd[2]) { /* supported vital product data pages */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1005 | arr[1] = cmd[2]; /*sanity */ |
| 1006 | n = 4; |
| 1007 | arr[n++] = 0x0; /* this page */ |
| 1008 | arr[n++] = 0x80; /* unit serial number */ |
| 1009 | arr[n++] = 0x83; /* device identification */ |
| 1010 | arr[n++] = 0x84; /* software interface ident. */ |
| 1011 | arr[n++] = 0x85; /* management network addresses */ |
| 1012 | arr[n++] = 0x86; /* extended inquiry */ |
| 1013 | arr[n++] = 0x87; /* mode page policy */ |
| 1014 | arr[n++] = 0x88; /* SCSI ports */ |
| 1015 | arr[n++] = 0x89; /* ATA information */ |
| 1016 | arr[n++] = 0xb0; /* Block limits (SBC) */ |
| 1017 | arr[3] = n - 4; /* number of supported VPD pages */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1018 | } else if (0x80 == cmd[2]) { /* unit serial number */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1019 | arr[1] = cmd[2]; /*sanity */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1020 | arr[3] = len; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1021 | memcpy(&arr[4], lu_id_str, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1022 | } else if (0x83 == cmd[2]) { /* device identification */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1023 | arr[1] = cmd[2]; /*sanity */ |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1024 | arr[3] = inquiry_evpd_83(&arr[4], port_group_id, |
| 1025 | target_dev_id, lu_id_num, |
| 1026 | lu_id_str, len); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1027 | } else if (0x84 == cmd[2]) { /* Software interface ident. */ |
| 1028 | arr[1] = cmd[2]; /*sanity */ |
| 1029 | arr[3] = inquiry_evpd_84(&arr[4]); |
| 1030 | } else if (0x85 == cmd[2]) { /* Management network addresses */ |
| 1031 | arr[1] = cmd[2]; /*sanity */ |
| 1032 | arr[3] = inquiry_evpd_85(&arr[4]); |
| 1033 | } else if (0x86 == cmd[2]) { /* extended inquiry */ |
| 1034 | arr[1] = cmd[2]; /*sanity */ |
| 1035 | arr[3] = 0x3c; /* number of following entries */ |
| 1036 | arr[4] = 0x0; /* no protection stuff */ |
| 1037 | arr[5] = 0x7; /* head of q, ordered + simple q's */ |
| 1038 | } else if (0x87 == cmd[2]) { /* mode page policy */ |
| 1039 | arr[1] = cmd[2]; /*sanity */ |
| 1040 | arr[3] = 0x8; /* number of following entries */ |
| 1041 | arr[4] = 0x2; /* disconnect-reconnect mp */ |
| 1042 | arr[6] = 0x80; /* mlus, shared */ |
| 1043 | arr[8] = 0x18; /* protocol specific lu */ |
| 1044 | arr[10] = 0x82; /* mlus, per initiator port */ |
| 1045 | } else if (0x88 == cmd[2]) { /* SCSI Ports */ |
| 1046 | arr[1] = cmd[2]; /*sanity */ |
| 1047 | arr[3] = inquiry_evpd_88(&arr[4], target_dev_id); |
| 1048 | } else if (0x89 == cmd[2]) { /* ATA information */ |
| 1049 | arr[1] = cmd[2]; /*sanity */ |
| 1050 | n = inquiry_evpd_89(&arr[4]); |
| 1051 | arr[2] = (n >> 8); |
| 1052 | arr[3] = (n & 0xff); |
| 1053 | } else if (0xb0 == cmd[2]) { /* Block limits (SBC) */ |
| 1054 | arr[1] = cmd[2]; /*sanity */ |
| 1055 | arr[3] = inquiry_evpd_b0(&arr[4]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1056 | } else { |
| 1057 | /* Illegal request, invalid field in cdb */ |
| 1058 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1059 | INVALID_FIELD_IN_CDB, 0); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1060 | kfree(arr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1061 | return check_condition_result; |
| 1062 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1063 | len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1064 | ret = fill_from_dev_buffer(scp, arr, |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1065 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1066 | kfree(arr); |
| 1067 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1068 | } |
| 1069 | /* drops through here for a standard inquiry */ |
| 1070 | arr[1] = DEV_REMOVEABLE(target) ? 0x80 : 0; /* Removable disk */ |
| 1071 | arr[2] = scsi_debug_scsi_level; |
| 1072 | arr[3] = 2; /* response_data_format==2 */ |
| 1073 | arr[4] = SDEBUG_LONG_INQ_SZ - 5; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1074 | if (0 == scsi_debug_vpd_use_hostno) |
| 1075 | arr[5] = 0x10; /* claim: implicit TGPS */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1076 | arr[6] = 0x10; /* claim: MultiP */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1077 | /* arr[6] |= 0x40; ... claim: EncServ (enclosure services) */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1078 | arr[7] = 0xa; /* claim: LINKED + CMDQUE */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1079 | memcpy(&arr[8], inq_vendor_id, 8); |
| 1080 | memcpy(&arr[16], inq_product_id, 16); |
| 1081 | memcpy(&arr[32], inq_product_rev, 4); |
| 1082 | /* version descriptors (2 bytes each) follow */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1083 | arr[58] = 0x0; arr[59] = 0x77; /* SAM-3 ANSI */ |
| 1084 | arr[60] = 0x3; arr[61] = 0x14; /* SPC-3 ANSI */ |
| 1085 | n = 62; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1086 | if (scsi_debug_ptype == 0) { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1087 | arr[n++] = 0x3; arr[n++] = 0x3d; /* SBC-2 ANSI */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1088 | } else if (scsi_debug_ptype == 1) { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1089 | arr[n++] = 0x3; arr[n++] = 0x60; /* SSC-2 no version */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1090 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1091 | arr[n++] = 0xc; arr[n++] = 0xf; /* SAS-1.1 rev 10 */ |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1092 | ret = fill_from_dev_buffer(scp, arr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1093 | min(alloc_len, SDEBUG_LONG_INQ_SZ)); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1094 | kfree(arr); |
| 1095 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1096 | } |
| 1097 | |
| 1098 | static int resp_requests(struct scsi_cmnd * scp, |
| 1099 | struct sdebug_dev_info * devip) |
| 1100 | { |
| 1101 | unsigned char * sbuff; |
| 1102 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 1103 | unsigned char arr[SDEBUG_SENSE_LEN]; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1104 | int want_dsense; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1105 | int len = 18; |
| 1106 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1107 | memset(arr, 0, sizeof(arr)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1108 | if (devip->reset == 1) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1109 | mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0); |
| 1110 | want_dsense = !!(cmd[1] & 1) || scsi_debug_dsense; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1111 | sbuff = devip->sense_buff; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1112 | if ((iec_m_pg[2] & 0x4) && (6 == (iec_m_pg[3] & 0xf))) { |
| 1113 | if (want_dsense) { |
| 1114 | arr[0] = 0x72; |
| 1115 | arr[1] = 0x0; /* NO_SENSE in sense_key */ |
| 1116 | arr[2] = THRESHOLD_EXCEEDED; |
| 1117 | arr[3] = 0xff; /* TEST set and MRIE==6 */ |
| 1118 | } else { |
| 1119 | arr[0] = 0x70; |
| 1120 | arr[2] = 0x0; /* NO_SENSE in sense_key */ |
| 1121 | arr[7] = 0xa; /* 18 byte sense buffer */ |
| 1122 | arr[12] = THRESHOLD_EXCEEDED; |
| 1123 | arr[13] = 0xff; /* TEST set and MRIE==6 */ |
| 1124 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1125 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1126 | memcpy(arr, sbuff, SDEBUG_SENSE_LEN); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1127 | if ((cmd[1] & 1) && (! scsi_debug_dsense)) { |
| 1128 | /* DESC bit set and sense_buff in fixed format */ |
| 1129 | memset(arr, 0, sizeof(arr)); |
| 1130 | arr[0] = 0x72; |
| 1131 | arr[1] = sbuff[2]; /* sense key */ |
| 1132 | arr[2] = sbuff[12]; /* asc */ |
| 1133 | arr[3] = sbuff[13]; /* ascq */ |
| 1134 | len = 8; |
| 1135 | } |
| 1136 | } |
| 1137 | mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1138 | return fill_from_dev_buffer(scp, arr, len); |
| 1139 | } |
| 1140 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1141 | static int resp_start_stop(struct scsi_cmnd * scp, |
| 1142 | struct sdebug_dev_info * devip) |
| 1143 | { |
| 1144 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 1145 | int power_cond, errsts, start; |
| 1146 | |
| 1147 | if ((errsts = check_readiness(scp, 1, devip))) |
| 1148 | return errsts; |
| 1149 | power_cond = (cmd[4] & 0xf0) >> 4; |
| 1150 | if (power_cond) { |
| 1151 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 1152 | 0); |
| 1153 | return check_condition_result; |
| 1154 | } |
| 1155 | start = cmd[4] & 1; |
| 1156 | if (start == devip->stopped) |
| 1157 | devip->stopped = !start; |
| 1158 | return 0; |
| 1159 | } |
| 1160 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1161 | #define SDEBUG_READCAP_ARR_SZ 8 |
| 1162 | static int resp_readcap(struct scsi_cmnd * scp, |
| 1163 | struct sdebug_dev_info * devip) |
| 1164 | { |
| 1165 | unsigned char arr[SDEBUG_READCAP_ARR_SZ]; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1166 | unsigned int capac; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1167 | int errsts; |
| 1168 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1169 | if ((errsts = check_readiness(scp, 1, devip))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1170 | return errsts; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1171 | /* following just in case virtual_gb changed */ |
| 1172 | if (scsi_debug_virtual_gb > 0) { |
| 1173 | sdebug_capacity = 2048 * 1024; |
| 1174 | sdebug_capacity *= scsi_debug_virtual_gb; |
| 1175 | } else |
| 1176 | sdebug_capacity = sdebug_store_sectors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1177 | memset(arr, 0, SDEBUG_READCAP_ARR_SZ); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1178 | if (sdebug_capacity < 0xffffffff) { |
| 1179 | capac = (unsigned int)sdebug_capacity - 1; |
| 1180 | arr[0] = (capac >> 24); |
| 1181 | arr[1] = (capac >> 16) & 0xff; |
| 1182 | arr[2] = (capac >> 8) & 0xff; |
| 1183 | arr[3] = capac & 0xff; |
| 1184 | } else { |
| 1185 | arr[0] = 0xff; |
| 1186 | arr[1] = 0xff; |
| 1187 | arr[2] = 0xff; |
| 1188 | arr[3] = 0xff; |
| 1189 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1190 | arr[6] = (SECT_SIZE_PER(target) >> 8) & 0xff; |
| 1191 | arr[7] = SECT_SIZE_PER(target) & 0xff; |
| 1192 | return fill_from_dev_buffer(scp, arr, SDEBUG_READCAP_ARR_SZ); |
| 1193 | } |
| 1194 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1195 | #define SDEBUG_READCAP16_ARR_SZ 32 |
| 1196 | static int resp_readcap16(struct scsi_cmnd * scp, |
| 1197 | struct sdebug_dev_info * devip) |
| 1198 | { |
| 1199 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 1200 | unsigned char arr[SDEBUG_READCAP16_ARR_SZ]; |
| 1201 | unsigned long long capac; |
| 1202 | int errsts, k, alloc_len; |
| 1203 | |
| 1204 | if ((errsts = check_readiness(scp, 1, devip))) |
| 1205 | return errsts; |
| 1206 | alloc_len = ((cmd[10] << 24) + (cmd[11] << 16) + (cmd[12] << 8) |
| 1207 | + cmd[13]); |
| 1208 | /* following just in case virtual_gb changed */ |
| 1209 | if (scsi_debug_virtual_gb > 0) { |
| 1210 | sdebug_capacity = 2048 * 1024; |
| 1211 | sdebug_capacity *= scsi_debug_virtual_gb; |
| 1212 | } else |
| 1213 | sdebug_capacity = sdebug_store_sectors; |
| 1214 | memset(arr, 0, SDEBUG_READCAP16_ARR_SZ); |
| 1215 | capac = sdebug_capacity - 1; |
| 1216 | for (k = 0; k < 8; ++k, capac >>= 8) |
| 1217 | arr[7 - k] = capac & 0xff; |
| 1218 | arr[8] = (SECT_SIZE_PER(target) >> 24) & 0xff; |
| 1219 | arr[9] = (SECT_SIZE_PER(target) >> 16) & 0xff; |
| 1220 | arr[10] = (SECT_SIZE_PER(target) >> 8) & 0xff; |
| 1221 | arr[11] = SECT_SIZE_PER(target) & 0xff; |
| 1222 | return fill_from_dev_buffer(scp, arr, |
| 1223 | min(alloc_len, SDEBUG_READCAP16_ARR_SZ)); |
| 1224 | } |
| 1225 | |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1226 | #define SDEBUG_MAX_TGTPGS_ARR_SZ 1412 |
| 1227 | |
| 1228 | static int resp_report_tgtpgs(struct scsi_cmnd * scp, |
| 1229 | struct sdebug_dev_info * devip) |
| 1230 | { |
| 1231 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 1232 | unsigned char * arr; |
| 1233 | int host_no = devip->sdbg_host->shost->host_no; |
| 1234 | int n, ret, alen, rlen; |
| 1235 | int port_group_a, port_group_b, port_a, port_b; |
| 1236 | |
| 1237 | alen = ((cmd[6] << 24) + (cmd[7] << 16) + (cmd[8] << 8) |
| 1238 | + cmd[9]); |
| 1239 | |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 1240 | arr = kzalloc(SDEBUG_MAX_TGTPGS_ARR_SZ, GFP_ATOMIC); |
| 1241 | if (! arr) |
| 1242 | return DID_REQUEUE << 16; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1243 | /* |
| 1244 | * EVPD page 0x88 states we have two ports, one |
| 1245 | * real and a fake port with no device connected. |
| 1246 | * So we create two port groups with one port each |
| 1247 | * and set the group with port B to unavailable. |
| 1248 | */ |
| 1249 | port_a = 0x1; /* relative port A */ |
| 1250 | port_b = 0x2; /* relative port B */ |
| 1251 | port_group_a = (((host_no + 1) & 0x7f) << 8) + |
| 1252 | (devip->channel & 0x7f); |
| 1253 | port_group_b = (((host_no + 1) & 0x7f) << 8) + |
| 1254 | (devip->channel & 0x7f) + 0x80; |
| 1255 | |
| 1256 | /* |
| 1257 | * The asymmetric access state is cycled according to the host_id. |
| 1258 | */ |
| 1259 | n = 4; |
| 1260 | if (0 == scsi_debug_vpd_use_hostno) { |
| 1261 | arr[n++] = host_no % 3; /* Asymm access state */ |
| 1262 | arr[n++] = 0x0F; /* claim: all states are supported */ |
| 1263 | } else { |
| 1264 | arr[n++] = 0x0; /* Active/Optimized path */ |
| 1265 | arr[n++] = 0x01; /* claim: only support active/optimized paths */ |
| 1266 | } |
| 1267 | arr[n++] = (port_group_a >> 8) & 0xff; |
| 1268 | arr[n++] = port_group_a & 0xff; |
| 1269 | arr[n++] = 0; /* Reserved */ |
| 1270 | arr[n++] = 0; /* Status code */ |
| 1271 | arr[n++] = 0; /* Vendor unique */ |
| 1272 | arr[n++] = 0x1; /* One port per group */ |
| 1273 | arr[n++] = 0; /* Reserved */ |
| 1274 | arr[n++] = 0; /* Reserved */ |
| 1275 | arr[n++] = (port_a >> 8) & 0xff; |
| 1276 | arr[n++] = port_a & 0xff; |
| 1277 | arr[n++] = 3; /* Port unavailable */ |
| 1278 | arr[n++] = 0x08; /* claim: only unavailalbe paths are supported */ |
| 1279 | arr[n++] = (port_group_b >> 8) & 0xff; |
| 1280 | arr[n++] = port_group_b & 0xff; |
| 1281 | arr[n++] = 0; /* Reserved */ |
| 1282 | arr[n++] = 0; /* Status code */ |
| 1283 | arr[n++] = 0; /* Vendor unique */ |
| 1284 | arr[n++] = 0x1; /* One port per group */ |
| 1285 | arr[n++] = 0; /* Reserved */ |
| 1286 | arr[n++] = 0; /* Reserved */ |
| 1287 | arr[n++] = (port_b >> 8) & 0xff; |
| 1288 | arr[n++] = port_b & 0xff; |
| 1289 | |
| 1290 | rlen = n - 4; |
| 1291 | arr[0] = (rlen >> 24) & 0xff; |
| 1292 | arr[1] = (rlen >> 16) & 0xff; |
| 1293 | arr[2] = (rlen >> 8) & 0xff; |
| 1294 | arr[3] = rlen & 0xff; |
| 1295 | |
| 1296 | /* |
| 1297 | * Return the smallest value of either |
| 1298 | * - The allocated length |
| 1299 | * - The constructed command length |
| 1300 | * - The maximum array size |
| 1301 | */ |
| 1302 | rlen = min(alen,n); |
| 1303 | ret = fill_from_dev_buffer(scp, arr, |
| 1304 | min(rlen, SDEBUG_MAX_TGTPGS_ARR_SZ)); |
| 1305 | kfree(arr); |
| 1306 | return ret; |
| 1307 | } |
| 1308 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1309 | /* <<Following mode page info copied from ST318451LW>> */ |
| 1310 | |
| 1311 | static int resp_err_recov_pg(unsigned char * p, int pcontrol, int target) |
| 1312 | { /* Read-Write Error Recovery page for mode_sense */ |
| 1313 | unsigned char err_recov_pg[] = {0x1, 0xa, 0xc0, 11, 240, 0, 0, 0, |
| 1314 | 5, 0, 0xff, 0xff}; |
| 1315 | |
| 1316 | memcpy(p, err_recov_pg, sizeof(err_recov_pg)); |
| 1317 | if (1 == pcontrol) |
| 1318 | memset(p + 2, 0, sizeof(err_recov_pg) - 2); |
| 1319 | return sizeof(err_recov_pg); |
| 1320 | } |
| 1321 | |
| 1322 | static int resp_disconnect_pg(unsigned char * p, int pcontrol, int target) |
| 1323 | { /* Disconnect-Reconnect page for mode_sense */ |
| 1324 | unsigned char disconnect_pg[] = {0x2, 0xe, 128, 128, 0, 10, 0, 0, |
| 1325 | 0, 0, 0, 0, 0, 0, 0, 0}; |
| 1326 | |
| 1327 | memcpy(p, disconnect_pg, sizeof(disconnect_pg)); |
| 1328 | if (1 == pcontrol) |
| 1329 | memset(p + 2, 0, sizeof(disconnect_pg) - 2); |
| 1330 | return sizeof(disconnect_pg); |
| 1331 | } |
| 1332 | |
| 1333 | static int resp_format_pg(unsigned char * p, int pcontrol, int target) |
| 1334 | { /* Format device page for mode_sense */ |
| 1335 | unsigned char format_pg[] = {0x3, 0x16, 0, 0, 0, 0, 0, 0, |
| 1336 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 1337 | 0, 0, 0, 0, 0x40, 0, 0, 0}; |
| 1338 | |
| 1339 | memcpy(p, format_pg, sizeof(format_pg)); |
| 1340 | p[10] = (sdebug_sectors_per >> 8) & 0xff; |
| 1341 | p[11] = sdebug_sectors_per & 0xff; |
| 1342 | p[12] = (SECT_SIZE >> 8) & 0xff; |
| 1343 | p[13] = SECT_SIZE & 0xff; |
| 1344 | if (DEV_REMOVEABLE(target)) |
| 1345 | p[20] |= 0x20; /* should agree with INQUIRY */ |
| 1346 | if (1 == pcontrol) |
| 1347 | memset(p + 2, 0, sizeof(format_pg) - 2); |
| 1348 | return sizeof(format_pg); |
| 1349 | } |
| 1350 | |
| 1351 | static int resp_caching_pg(unsigned char * p, int pcontrol, int target) |
| 1352 | { /* Caching page for mode_sense */ |
| 1353 | unsigned char caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0, |
| 1354 | 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, 0, 0, 0, 0}; |
| 1355 | |
| 1356 | memcpy(p, caching_pg, sizeof(caching_pg)); |
| 1357 | if (1 == pcontrol) |
| 1358 | memset(p + 2, 0, sizeof(caching_pg) - 2); |
| 1359 | return sizeof(caching_pg); |
| 1360 | } |
| 1361 | |
| 1362 | static int resp_ctrl_m_pg(unsigned char * p, int pcontrol, int target) |
| 1363 | { /* Control mode page for mode_sense */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1364 | unsigned char ch_ctrl_m_pg[] = {/* 0xa, 10, */ 0x6, 0, 0, 0, 0, 0, |
| 1365 | 0, 0, 0, 0}; |
| 1366 | unsigned char d_ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1367 | 0, 0, 0x2, 0x4b}; |
| 1368 | |
| 1369 | if (scsi_debug_dsense) |
| 1370 | ctrl_m_pg[2] |= 0x4; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1371 | else |
| 1372 | ctrl_m_pg[2] &= ~0x4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1373 | memcpy(p, ctrl_m_pg, sizeof(ctrl_m_pg)); |
| 1374 | if (1 == pcontrol) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1375 | memcpy(p + 2, ch_ctrl_m_pg, sizeof(ch_ctrl_m_pg)); |
| 1376 | else if (2 == pcontrol) |
| 1377 | memcpy(p, d_ctrl_m_pg, sizeof(d_ctrl_m_pg)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1378 | return sizeof(ctrl_m_pg); |
| 1379 | } |
| 1380 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1381 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1382 | static int resp_iec_m_pg(unsigned char * p, int pcontrol, int target) |
| 1383 | { /* Informational Exceptions control mode page for mode_sense */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1384 | unsigned char ch_iec_m_pg[] = {/* 0x1c, 0xa, */ 0x4, 0xf, 0, 0, 0, 0, |
| 1385 | 0, 0, 0x0, 0x0}; |
| 1386 | unsigned char d_iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, |
| 1387 | 0, 0, 0x0, 0x0}; |
| 1388 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1389 | memcpy(p, iec_m_pg, sizeof(iec_m_pg)); |
| 1390 | if (1 == pcontrol) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1391 | memcpy(p + 2, ch_iec_m_pg, sizeof(ch_iec_m_pg)); |
| 1392 | else if (2 == pcontrol) |
| 1393 | memcpy(p, d_iec_m_pg, sizeof(d_iec_m_pg)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1394 | return sizeof(iec_m_pg); |
| 1395 | } |
| 1396 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1397 | static int resp_sas_sf_m_pg(unsigned char * p, int pcontrol, int target) |
| 1398 | { /* SAS SSP mode page - short format for mode_sense */ |
| 1399 | unsigned char sas_sf_m_pg[] = {0x19, 0x6, |
| 1400 | 0x6, 0x0, 0x7, 0xd0, 0x0, 0x0}; |
| 1401 | |
| 1402 | memcpy(p, sas_sf_m_pg, sizeof(sas_sf_m_pg)); |
| 1403 | if (1 == pcontrol) |
| 1404 | memset(p + 2, 0, sizeof(sas_sf_m_pg) - 2); |
| 1405 | return sizeof(sas_sf_m_pg); |
| 1406 | } |
| 1407 | |
| 1408 | |
| 1409 | static int resp_sas_pcd_m_spg(unsigned char * p, int pcontrol, int target, |
| 1410 | int target_dev_id) |
| 1411 | { /* SAS phy control and discover mode page for mode_sense */ |
| 1412 | unsigned char sas_pcd_m_pg[] = {0x59, 0x1, 0, 0x64, 0, 0x6, 0, 2, |
| 1413 | 0, 0, 0, 0, 0x10, 0x9, 0x8, 0x0, |
| 1414 | 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, |
| 1415 | 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, |
| 1416 | 0x2, 0, 0, 0, 0, 0, 0, 0, |
| 1417 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, |
| 1418 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 1419 | 0, 1, 0, 0, 0x10, 0x9, 0x8, 0x0, |
| 1420 | 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, |
| 1421 | 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, |
| 1422 | 0x3, 0, 0, 0, 0, 0, 0, 0, |
| 1423 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, |
| 1424 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 1425 | }; |
| 1426 | int port_a, port_b; |
| 1427 | |
| 1428 | port_a = target_dev_id + 1; |
| 1429 | port_b = port_a + 1; |
| 1430 | memcpy(p, sas_pcd_m_pg, sizeof(sas_pcd_m_pg)); |
| 1431 | p[20] = (port_a >> 24); |
| 1432 | p[21] = (port_a >> 16) & 0xff; |
| 1433 | p[22] = (port_a >> 8) & 0xff; |
| 1434 | p[23] = port_a & 0xff; |
| 1435 | p[48 + 20] = (port_b >> 24); |
| 1436 | p[48 + 21] = (port_b >> 16) & 0xff; |
| 1437 | p[48 + 22] = (port_b >> 8) & 0xff; |
| 1438 | p[48 + 23] = port_b & 0xff; |
| 1439 | if (1 == pcontrol) |
| 1440 | memset(p + 4, 0, sizeof(sas_pcd_m_pg) - 4); |
| 1441 | return sizeof(sas_pcd_m_pg); |
| 1442 | } |
| 1443 | |
| 1444 | static int resp_sas_sha_m_spg(unsigned char * p, int pcontrol) |
| 1445 | { /* SAS SSP shared protocol specific port mode subpage */ |
| 1446 | unsigned char sas_sha_m_pg[] = {0x59, 0x2, 0, 0xc, 0, 0x6, 0x10, 0, |
| 1447 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 1448 | }; |
| 1449 | |
| 1450 | memcpy(p, sas_sha_m_pg, sizeof(sas_sha_m_pg)); |
| 1451 | if (1 == pcontrol) |
| 1452 | memset(p + 4, 0, sizeof(sas_sha_m_pg) - 4); |
| 1453 | return sizeof(sas_sha_m_pg); |
| 1454 | } |
| 1455 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1456 | #define SDEBUG_MAX_MSENSE_SZ 256 |
| 1457 | |
| 1458 | static int resp_mode_sense(struct scsi_cmnd * scp, int target, |
| 1459 | struct sdebug_dev_info * devip) |
| 1460 | { |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1461 | unsigned char dbd, llbaa; |
| 1462 | int pcontrol, pcode, subpcode, bd_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1463 | unsigned char dev_spec; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1464 | int k, alloc_len, msense_6, offset, len, errsts, target_dev_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1465 | unsigned char * ap; |
| 1466 | unsigned char arr[SDEBUG_MAX_MSENSE_SZ]; |
| 1467 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 1468 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1469 | if ((errsts = check_readiness(scp, 1, devip))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1470 | return errsts; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1471 | dbd = !!(cmd[1] & 0x8); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1472 | pcontrol = (cmd[2] & 0xc0) >> 6; |
| 1473 | pcode = cmd[2] & 0x3f; |
| 1474 | subpcode = cmd[3]; |
| 1475 | msense_6 = (MODE_SENSE == cmd[0]); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1476 | llbaa = msense_6 ? 0 : !!(cmd[1] & 0x10); |
| 1477 | if ((0 == scsi_debug_ptype) && (0 == dbd)) |
| 1478 | bd_len = llbaa ? 16 : 8; |
| 1479 | else |
| 1480 | bd_len = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1481 | alloc_len = msense_6 ? cmd[4] : ((cmd[7] << 8) | cmd[8]); |
| 1482 | memset(arr, 0, SDEBUG_MAX_MSENSE_SZ); |
| 1483 | if (0x3 == pcontrol) { /* Saving values not supported */ |
| 1484 | mk_sense_buffer(devip, ILLEGAL_REQUEST, SAVING_PARAMS_UNSUP, |
| 1485 | 0); |
| 1486 | return check_condition_result; |
| 1487 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1488 | target_dev_id = ((devip->sdbg_host->shost->host_no + 1) * 2000) + |
| 1489 | (devip->target * 1000) - 3; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1490 | /* set DPOFUA bit for disks */ |
| 1491 | if (0 == scsi_debug_ptype) |
| 1492 | dev_spec = (DEV_READONLY(target) ? 0x80 : 0x0) | 0x10; |
| 1493 | else |
| 1494 | dev_spec = 0x0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1495 | if (msense_6) { |
| 1496 | arr[2] = dev_spec; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1497 | arr[3] = bd_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1498 | offset = 4; |
| 1499 | } else { |
| 1500 | arr[3] = dev_spec; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1501 | if (16 == bd_len) |
| 1502 | arr[4] = 0x1; /* set LONGLBA bit */ |
| 1503 | arr[7] = bd_len; /* assume 255 or less */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1504 | offset = 8; |
| 1505 | } |
| 1506 | ap = arr + offset; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1507 | if ((bd_len > 0) && (0 == sdebug_capacity)) { |
| 1508 | if (scsi_debug_virtual_gb > 0) { |
| 1509 | sdebug_capacity = 2048 * 1024; |
| 1510 | sdebug_capacity *= scsi_debug_virtual_gb; |
| 1511 | } else |
| 1512 | sdebug_capacity = sdebug_store_sectors; |
| 1513 | } |
| 1514 | if (8 == bd_len) { |
| 1515 | if (sdebug_capacity > 0xfffffffe) { |
| 1516 | ap[0] = 0xff; |
| 1517 | ap[1] = 0xff; |
| 1518 | ap[2] = 0xff; |
| 1519 | ap[3] = 0xff; |
| 1520 | } else { |
| 1521 | ap[0] = (sdebug_capacity >> 24) & 0xff; |
| 1522 | ap[1] = (sdebug_capacity >> 16) & 0xff; |
| 1523 | ap[2] = (sdebug_capacity >> 8) & 0xff; |
| 1524 | ap[3] = sdebug_capacity & 0xff; |
| 1525 | } |
| 1526 | ap[6] = (SECT_SIZE_PER(target) >> 8) & 0xff; |
| 1527 | ap[7] = SECT_SIZE_PER(target) & 0xff; |
| 1528 | offset += bd_len; |
| 1529 | ap = arr + offset; |
| 1530 | } else if (16 == bd_len) { |
| 1531 | unsigned long long capac = sdebug_capacity; |
| 1532 | |
| 1533 | for (k = 0; k < 8; ++k, capac >>= 8) |
| 1534 | ap[7 - k] = capac & 0xff; |
| 1535 | ap[12] = (SECT_SIZE_PER(target) >> 24) & 0xff; |
| 1536 | ap[13] = (SECT_SIZE_PER(target) >> 16) & 0xff; |
| 1537 | ap[14] = (SECT_SIZE_PER(target) >> 8) & 0xff; |
| 1538 | ap[15] = SECT_SIZE_PER(target) & 0xff; |
| 1539 | offset += bd_len; |
| 1540 | ap = arr + offset; |
| 1541 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1542 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1543 | if ((subpcode > 0x0) && (subpcode < 0xff) && (0x19 != pcode)) { |
| 1544 | /* TODO: Control Extension page */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1545 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 1546 | 0); |
| 1547 | return check_condition_result; |
| 1548 | } |
| 1549 | switch (pcode) { |
| 1550 | case 0x1: /* Read-Write error recovery page, direct access */ |
| 1551 | len = resp_err_recov_pg(ap, pcontrol, target); |
| 1552 | offset += len; |
| 1553 | break; |
| 1554 | case 0x2: /* Disconnect-Reconnect page, all devices */ |
| 1555 | len = resp_disconnect_pg(ap, pcontrol, target); |
| 1556 | offset += len; |
| 1557 | break; |
| 1558 | case 0x3: /* Format device page, direct access */ |
| 1559 | len = resp_format_pg(ap, pcontrol, target); |
| 1560 | offset += len; |
| 1561 | break; |
| 1562 | case 0x8: /* Caching page, direct access */ |
| 1563 | len = resp_caching_pg(ap, pcontrol, target); |
| 1564 | offset += len; |
| 1565 | break; |
| 1566 | case 0xa: /* Control Mode page, all devices */ |
| 1567 | len = resp_ctrl_m_pg(ap, pcontrol, target); |
| 1568 | offset += len; |
| 1569 | break; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1570 | case 0x19: /* if spc==1 then sas phy, control+discover */ |
| 1571 | if ((subpcode > 0x2) && (subpcode < 0xff)) { |
| 1572 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1573 | INVALID_FIELD_IN_CDB, 0); |
| 1574 | return check_condition_result; |
| 1575 | } |
| 1576 | len = 0; |
| 1577 | if ((0x0 == subpcode) || (0xff == subpcode)) |
| 1578 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); |
| 1579 | if ((0x1 == subpcode) || (0xff == subpcode)) |
| 1580 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, target, |
| 1581 | target_dev_id); |
| 1582 | if ((0x2 == subpcode) || (0xff == subpcode)) |
| 1583 | len += resp_sas_sha_m_spg(ap + len, pcontrol); |
| 1584 | offset += len; |
| 1585 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1586 | case 0x1c: /* Informational Exceptions Mode page, all devices */ |
| 1587 | len = resp_iec_m_pg(ap, pcontrol, target); |
| 1588 | offset += len; |
| 1589 | break; |
| 1590 | case 0x3f: /* Read all Mode pages */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1591 | if ((0 == subpcode) || (0xff == subpcode)) { |
| 1592 | len = resp_err_recov_pg(ap, pcontrol, target); |
| 1593 | len += resp_disconnect_pg(ap + len, pcontrol, target); |
| 1594 | len += resp_format_pg(ap + len, pcontrol, target); |
| 1595 | len += resp_caching_pg(ap + len, pcontrol, target); |
| 1596 | len += resp_ctrl_m_pg(ap + len, pcontrol, target); |
| 1597 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); |
| 1598 | if (0xff == subpcode) { |
| 1599 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, |
| 1600 | target, target_dev_id); |
| 1601 | len += resp_sas_sha_m_spg(ap + len, pcontrol); |
| 1602 | } |
| 1603 | len += resp_iec_m_pg(ap + len, pcontrol, target); |
| 1604 | } else { |
| 1605 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1606 | INVALID_FIELD_IN_CDB, 0); |
| 1607 | return check_condition_result; |
| 1608 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1609 | offset += len; |
| 1610 | break; |
| 1611 | default: |
| 1612 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 1613 | 0); |
| 1614 | return check_condition_result; |
| 1615 | } |
| 1616 | if (msense_6) |
| 1617 | arr[0] = offset - 1; |
| 1618 | else { |
| 1619 | arr[0] = ((offset - 2) >> 8) & 0xff; |
| 1620 | arr[1] = (offset - 2) & 0xff; |
| 1621 | } |
| 1622 | return fill_from_dev_buffer(scp, arr, min(alloc_len, offset)); |
| 1623 | } |
| 1624 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1625 | #define SDEBUG_MAX_MSELECT_SZ 512 |
| 1626 | |
| 1627 | static int resp_mode_select(struct scsi_cmnd * scp, int mselect6, |
| 1628 | struct sdebug_dev_info * devip) |
| 1629 | { |
| 1630 | int pf, sp, ps, md_len, bd_len, off, spf, pg_len; |
| 1631 | int param_len, res, errsts, mpage; |
| 1632 | unsigned char arr[SDEBUG_MAX_MSELECT_SZ]; |
| 1633 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 1634 | |
| 1635 | if ((errsts = check_readiness(scp, 1, devip))) |
| 1636 | return errsts; |
| 1637 | memset(arr, 0, sizeof(arr)); |
| 1638 | pf = cmd[1] & 0x10; |
| 1639 | sp = cmd[1] & 0x1; |
| 1640 | param_len = mselect6 ? cmd[4] : ((cmd[7] << 8) + cmd[8]); |
| 1641 | if ((0 == pf) || sp || (param_len > SDEBUG_MAX_MSELECT_SZ)) { |
| 1642 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1643 | INVALID_FIELD_IN_CDB, 0); |
| 1644 | return check_condition_result; |
| 1645 | } |
| 1646 | res = fetch_to_dev_buffer(scp, arr, param_len); |
| 1647 | if (-1 == res) |
| 1648 | return (DID_ERROR << 16); |
| 1649 | else if ((res < param_len) && |
| 1650 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) |
| 1651 | printk(KERN_INFO "scsi_debug: mode_select: cdb indicated=%d, " |
| 1652 | " IO sent=%d bytes\n", param_len, res); |
| 1653 | md_len = mselect6 ? (arr[0] + 1) : ((arr[0] << 8) + arr[1] + 2); |
| 1654 | bd_len = mselect6 ? arr[3] : ((arr[6] << 8) + arr[7]); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1655 | if (md_len > 2) { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1656 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1657 | INVALID_FIELD_IN_PARAM_LIST, 0); |
| 1658 | return check_condition_result; |
| 1659 | } |
| 1660 | off = bd_len + (mselect6 ? 4 : 8); |
| 1661 | mpage = arr[off] & 0x3f; |
| 1662 | ps = !!(arr[off] & 0x80); |
| 1663 | if (ps) { |
| 1664 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1665 | INVALID_FIELD_IN_PARAM_LIST, 0); |
| 1666 | return check_condition_result; |
| 1667 | } |
| 1668 | spf = !!(arr[off] & 0x40); |
| 1669 | pg_len = spf ? ((arr[off + 2] << 8) + arr[off + 3] + 4) : |
| 1670 | (arr[off + 1] + 2); |
| 1671 | if ((pg_len + off) > param_len) { |
| 1672 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1673 | PARAMETER_LIST_LENGTH_ERR, 0); |
| 1674 | return check_condition_result; |
| 1675 | } |
| 1676 | switch (mpage) { |
| 1677 | case 0xa: /* Control Mode page */ |
| 1678 | if (ctrl_m_pg[1] == arr[off + 1]) { |
| 1679 | memcpy(ctrl_m_pg + 2, arr + off + 2, |
| 1680 | sizeof(ctrl_m_pg) - 2); |
| 1681 | scsi_debug_dsense = !!(ctrl_m_pg[2] & 0x4); |
| 1682 | return 0; |
| 1683 | } |
| 1684 | break; |
| 1685 | case 0x1c: /* Informational Exceptions Mode page */ |
| 1686 | if (iec_m_pg[1] == arr[off + 1]) { |
| 1687 | memcpy(iec_m_pg + 2, arr + off + 2, |
| 1688 | sizeof(iec_m_pg) - 2); |
| 1689 | return 0; |
| 1690 | } |
| 1691 | break; |
| 1692 | default: |
| 1693 | break; |
| 1694 | } |
| 1695 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1696 | INVALID_FIELD_IN_PARAM_LIST, 0); |
| 1697 | return check_condition_result; |
| 1698 | } |
| 1699 | |
| 1700 | static int resp_temp_l_pg(unsigned char * arr) |
| 1701 | { |
| 1702 | unsigned char temp_l_pg[] = {0x0, 0x0, 0x3, 0x2, 0x0, 38, |
| 1703 | 0x0, 0x1, 0x3, 0x2, 0x0, 65, |
| 1704 | }; |
| 1705 | |
| 1706 | memcpy(arr, temp_l_pg, sizeof(temp_l_pg)); |
| 1707 | return sizeof(temp_l_pg); |
| 1708 | } |
| 1709 | |
| 1710 | static int resp_ie_l_pg(unsigned char * arr) |
| 1711 | { |
| 1712 | unsigned char ie_l_pg[] = {0x0, 0x0, 0x3, 0x3, 0x0, 0x0, 38, |
| 1713 | }; |
| 1714 | |
| 1715 | memcpy(arr, ie_l_pg, sizeof(ie_l_pg)); |
| 1716 | if (iec_m_pg[2] & 0x4) { /* TEST bit set */ |
| 1717 | arr[4] = THRESHOLD_EXCEEDED; |
| 1718 | arr[5] = 0xff; |
| 1719 | } |
| 1720 | return sizeof(ie_l_pg); |
| 1721 | } |
| 1722 | |
| 1723 | #define SDEBUG_MAX_LSENSE_SZ 512 |
| 1724 | |
| 1725 | static int resp_log_sense(struct scsi_cmnd * scp, |
| 1726 | struct sdebug_dev_info * devip) |
| 1727 | { |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1728 | int ppc, sp, pcontrol, pcode, subpcode, alloc_len, errsts, len, n; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1729 | unsigned char arr[SDEBUG_MAX_LSENSE_SZ]; |
| 1730 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 1731 | |
| 1732 | if ((errsts = check_readiness(scp, 1, devip))) |
| 1733 | return errsts; |
| 1734 | memset(arr, 0, sizeof(arr)); |
| 1735 | ppc = cmd[1] & 0x2; |
| 1736 | sp = cmd[1] & 0x1; |
| 1737 | if (ppc || sp) { |
| 1738 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1739 | INVALID_FIELD_IN_CDB, 0); |
| 1740 | return check_condition_result; |
| 1741 | } |
| 1742 | pcontrol = (cmd[2] & 0xc0) >> 6; |
| 1743 | pcode = cmd[2] & 0x3f; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1744 | subpcode = cmd[3] & 0xff; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1745 | alloc_len = (cmd[7] << 8) + cmd[8]; |
| 1746 | arr[0] = pcode; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1747 | if (0 == subpcode) { |
| 1748 | switch (pcode) { |
| 1749 | case 0x0: /* Supported log pages log page */ |
| 1750 | n = 4; |
| 1751 | arr[n++] = 0x0; /* this page */ |
| 1752 | arr[n++] = 0xd; /* Temperature */ |
| 1753 | arr[n++] = 0x2f; /* Informational exceptions */ |
| 1754 | arr[3] = n - 4; |
| 1755 | break; |
| 1756 | case 0xd: /* Temperature log page */ |
| 1757 | arr[3] = resp_temp_l_pg(arr + 4); |
| 1758 | break; |
| 1759 | case 0x2f: /* Informational exceptions log page */ |
| 1760 | arr[3] = resp_ie_l_pg(arr + 4); |
| 1761 | break; |
| 1762 | default: |
| 1763 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1764 | INVALID_FIELD_IN_CDB, 0); |
| 1765 | return check_condition_result; |
| 1766 | } |
| 1767 | } else if (0xff == subpcode) { |
| 1768 | arr[0] |= 0x40; |
| 1769 | arr[1] = subpcode; |
| 1770 | switch (pcode) { |
| 1771 | case 0x0: /* Supported log pages and subpages log page */ |
| 1772 | n = 4; |
| 1773 | arr[n++] = 0x0; |
| 1774 | arr[n++] = 0x0; /* 0,0 page */ |
| 1775 | arr[n++] = 0x0; |
| 1776 | arr[n++] = 0xff; /* this page */ |
| 1777 | arr[n++] = 0xd; |
| 1778 | arr[n++] = 0x0; /* Temperature */ |
| 1779 | arr[n++] = 0x2f; |
| 1780 | arr[n++] = 0x0; /* Informational exceptions */ |
| 1781 | arr[3] = n - 4; |
| 1782 | break; |
| 1783 | case 0xd: /* Temperature subpages */ |
| 1784 | n = 4; |
| 1785 | arr[n++] = 0xd; |
| 1786 | arr[n++] = 0x0; /* Temperature */ |
| 1787 | arr[3] = n - 4; |
| 1788 | break; |
| 1789 | case 0x2f: /* Informational exceptions subpages */ |
| 1790 | n = 4; |
| 1791 | arr[n++] = 0x2f; |
| 1792 | arr[n++] = 0x0; /* Informational exceptions */ |
| 1793 | arr[3] = n - 4; |
| 1794 | break; |
| 1795 | default: |
| 1796 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1797 | INVALID_FIELD_IN_CDB, 0); |
| 1798 | return check_condition_result; |
| 1799 | } |
| 1800 | } else { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1801 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1802 | INVALID_FIELD_IN_CDB, 0); |
| 1803 | return check_condition_result; |
| 1804 | } |
| 1805 | len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); |
| 1806 | return fill_from_dev_buffer(scp, arr, |
| 1807 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); |
| 1808 | } |
| 1809 | |
| 1810 | static int resp_read(struct scsi_cmnd * SCpnt, unsigned long long lba, |
| 1811 | unsigned int num, struct sdebug_dev_info * devip) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1812 | { |
| 1813 | unsigned long iflags; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1814 | unsigned int block, from_bottom; |
| 1815 | unsigned long long u; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1816 | int ret; |
| 1817 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1818 | if (lba + num > sdebug_capacity) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1819 | mk_sense_buffer(devip, ILLEGAL_REQUEST, ADDR_OUT_OF_RANGE, |
| 1820 | 0); |
| 1821 | return check_condition_result; |
| 1822 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1823 | /* transfer length excessive (tie in to block limits VPD page) */ |
| 1824 | if (num > sdebug_store_sectors) { |
| 1825 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 1826 | 0); |
| 1827 | return check_condition_result; |
| 1828 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1829 | if ((SCSI_DEBUG_OPT_MEDIUM_ERR & scsi_debug_opts) && |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1830 | (lba <= OPT_MEDIUM_ERR_ADDR) && |
| 1831 | ((lba + num) > OPT_MEDIUM_ERR_ADDR)) { |
| 1832 | /* claim unrecoverable read error */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1833 | mk_sense_buffer(devip, MEDIUM_ERROR, UNRECOVERED_READ_ERR, |
| 1834 | 0); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1835 | /* set info field and valid bit for fixed descriptor */ |
| 1836 | if (0x70 == (devip->sense_buff[0] & 0x7f)) { |
| 1837 | devip->sense_buff[0] |= 0x80; /* Valid bit */ |
| 1838 | ret = OPT_MEDIUM_ERR_ADDR; |
| 1839 | devip->sense_buff[3] = (ret >> 24) & 0xff; |
| 1840 | devip->sense_buff[4] = (ret >> 16) & 0xff; |
| 1841 | devip->sense_buff[5] = (ret >> 8) & 0xff; |
| 1842 | devip->sense_buff[6] = ret & 0xff; |
| 1843 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1844 | return check_condition_result; |
| 1845 | } |
| 1846 | read_lock_irqsave(&atomic_rw, iflags); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1847 | if ((lba + num) <= sdebug_store_sectors) |
| 1848 | ret = fill_from_dev_buffer(SCpnt, |
| 1849 | fake_storep + (lba * SECT_SIZE), |
| 1850 | num * SECT_SIZE); |
| 1851 | else { |
| 1852 | /* modulo when one arg is 64 bits needs do_div() */ |
| 1853 | u = lba; |
| 1854 | block = do_div(u, sdebug_store_sectors); |
| 1855 | from_bottom = 0; |
| 1856 | if ((block + num) > sdebug_store_sectors) |
| 1857 | from_bottom = (block + num) - sdebug_store_sectors; |
| 1858 | ret = fill_from_dev_buffer(SCpnt, |
| 1859 | fake_storep + (block * SECT_SIZE), |
| 1860 | (num - from_bottom) * SECT_SIZE); |
| 1861 | if ((0 == ret) && (from_bottom > 0)) |
| 1862 | ret = fill_from_dev_buffer(SCpnt, fake_storep, |
| 1863 | from_bottom * SECT_SIZE); |
| 1864 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1865 | read_unlock_irqrestore(&atomic_rw, iflags); |
| 1866 | return ret; |
| 1867 | } |
| 1868 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1869 | static int resp_write(struct scsi_cmnd * SCpnt, unsigned long long lba, |
| 1870 | unsigned int num, struct sdebug_dev_info * devip) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1871 | { |
| 1872 | unsigned long iflags; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1873 | unsigned int block, to_bottom; |
| 1874 | unsigned long long u; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1875 | int res; |
| 1876 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1877 | if (lba + num > sdebug_capacity) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1878 | mk_sense_buffer(devip, ILLEGAL_REQUEST, ADDR_OUT_OF_RANGE, |
| 1879 | 0); |
| 1880 | return check_condition_result; |
| 1881 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1882 | /* transfer length excessive (tie in to block limits VPD page) */ |
| 1883 | if (num > sdebug_store_sectors) { |
| 1884 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 1885 | 0); |
| 1886 | return check_condition_result; |
| 1887 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1888 | |
| 1889 | write_lock_irqsave(&atomic_rw, iflags); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1890 | if ((lba + num) <= sdebug_store_sectors) |
| 1891 | res = fetch_to_dev_buffer(SCpnt, |
| 1892 | fake_storep + (lba * SECT_SIZE), |
| 1893 | num * SECT_SIZE); |
| 1894 | else { |
| 1895 | /* modulo when one arg is 64 bits needs do_div() */ |
| 1896 | u = lba; |
| 1897 | block = do_div(u, sdebug_store_sectors); |
| 1898 | to_bottom = 0; |
| 1899 | if ((block + num) > sdebug_store_sectors) |
| 1900 | to_bottom = (block + num) - sdebug_store_sectors; |
| 1901 | res = fetch_to_dev_buffer(SCpnt, |
| 1902 | fake_storep + (block * SECT_SIZE), |
| 1903 | (num - to_bottom) * SECT_SIZE); |
| 1904 | if ((0 == res) && (to_bottom > 0)) |
| 1905 | res = fetch_to_dev_buffer(SCpnt, fake_storep, |
| 1906 | to_bottom * SECT_SIZE); |
| 1907 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1908 | write_unlock_irqrestore(&atomic_rw, iflags); |
| 1909 | if (-1 == res) |
| 1910 | return (DID_ERROR << 16); |
| 1911 | else if ((res < (num * SECT_SIZE)) && |
| 1912 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1913 | printk(KERN_INFO "scsi_debug: write: cdb indicated=%u, " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1914 | " IO sent=%d bytes\n", num * SECT_SIZE, res); |
| 1915 | return 0; |
| 1916 | } |
| 1917 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1918 | #define SDEBUG_RLUN_ARR_SZ 256 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1919 | |
| 1920 | static int resp_report_luns(struct scsi_cmnd * scp, |
| 1921 | struct sdebug_dev_info * devip) |
| 1922 | { |
| 1923 | unsigned int alloc_len; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1924 | int lun_cnt, i, upper, num, n, wlun, lun; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1925 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 1926 | int select_report = (int)cmd[2]; |
| 1927 | struct scsi_lun *one_lun; |
| 1928 | unsigned char arr[SDEBUG_RLUN_ARR_SZ]; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1929 | unsigned char * max_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1930 | |
| 1931 | alloc_len = cmd[9] + (cmd[8] << 8) + (cmd[7] << 16) + (cmd[6] << 24); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1932 | if ((alloc_len < 4) || (select_report > 2)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1933 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 1934 | 0); |
| 1935 | return check_condition_result; |
| 1936 | } |
| 1937 | /* can produce response with up to 16k luns (lun 0 to lun 16383) */ |
| 1938 | memset(arr, 0, SDEBUG_RLUN_ARR_SZ); |
| 1939 | lun_cnt = scsi_debug_max_luns; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1940 | if (1 == select_report) |
| 1941 | lun_cnt = 0; |
| 1942 | else if (scsi_debug_no_lun_0 && (lun_cnt > 0)) |
| 1943 | --lun_cnt; |
| 1944 | wlun = (select_report > 0) ? 1 : 0; |
| 1945 | num = lun_cnt + wlun; |
| 1946 | arr[2] = ((sizeof(struct scsi_lun) * num) >> 8) & 0xff; |
| 1947 | arr[3] = (sizeof(struct scsi_lun) * num) & 0xff; |
| 1948 | n = min((int)((SDEBUG_RLUN_ARR_SZ - 8) / |
| 1949 | sizeof(struct scsi_lun)), num); |
| 1950 | if (n < num) { |
| 1951 | wlun = 0; |
| 1952 | lun_cnt = n; |
| 1953 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1954 | one_lun = (struct scsi_lun *) &arr[8]; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1955 | max_addr = arr + SDEBUG_RLUN_ARR_SZ; |
| 1956 | for (i = 0, lun = (scsi_debug_no_lun_0 ? 1 : 0); |
| 1957 | ((i < lun_cnt) && ((unsigned char *)(one_lun + i) < max_addr)); |
| 1958 | i++, lun++) { |
| 1959 | upper = (lun >> 8) & 0x3f; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1960 | if (upper) |
| 1961 | one_lun[i].scsi_lun[0] = |
| 1962 | (upper | (SAM2_LUN_ADDRESS_METHOD << 6)); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1963 | one_lun[i].scsi_lun[1] = lun & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1964 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1965 | if (wlun) { |
| 1966 | one_lun[i].scsi_lun[0] = (SAM2_WLUN_REPORT_LUNS >> 8) & 0xff; |
| 1967 | one_lun[i].scsi_lun[1] = SAM2_WLUN_REPORT_LUNS & 0xff; |
| 1968 | i++; |
| 1969 | } |
| 1970 | alloc_len = (unsigned char *)(one_lun + i) - arr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1971 | return fill_from_dev_buffer(scp, arr, |
| 1972 | min((int)alloc_len, SDEBUG_RLUN_ARR_SZ)); |
| 1973 | } |
| 1974 | |
| 1975 | /* When timer goes off this function is called. */ |
| 1976 | static void timer_intr_handler(unsigned long indx) |
| 1977 | { |
| 1978 | struct sdebug_queued_cmd * sqcp; |
| 1979 | unsigned long iflags; |
| 1980 | |
| 1981 | if (indx >= SCSI_DEBUG_CANQUEUE) { |
| 1982 | printk(KERN_ERR "scsi_debug:timer_intr_handler: indx too " |
| 1983 | "large\n"); |
| 1984 | return; |
| 1985 | } |
| 1986 | spin_lock_irqsave(&queued_arr_lock, iflags); |
| 1987 | sqcp = &queued_arr[(int)indx]; |
| 1988 | if (! sqcp->in_use) { |
| 1989 | printk(KERN_ERR "scsi_debug:timer_intr_handler: Unexpected " |
| 1990 | "interrupt\n"); |
| 1991 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 1992 | return; |
| 1993 | } |
| 1994 | sqcp->in_use = 0; |
| 1995 | if (sqcp->done_funct) { |
| 1996 | sqcp->a_cmnd->result = sqcp->scsi_result; |
| 1997 | sqcp->done_funct(sqcp->a_cmnd); /* callback to mid level */ |
| 1998 | } |
| 1999 | sqcp->done_funct = NULL; |
| 2000 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 2001 | } |
| 2002 | |
| 2003 | static int scsi_debug_slave_alloc(struct scsi_device * sdp) |
| 2004 | { |
| 2005 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2006 | printk(KERN_INFO "scsi_debug: slave_alloc <%u %u %u %u>\n", |
| 2007 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2008 | return 0; |
| 2009 | } |
| 2010 | |
| 2011 | static int scsi_debug_slave_configure(struct scsi_device * sdp) |
| 2012 | { |
| 2013 | struct sdebug_dev_info * devip; |
| 2014 | |
| 2015 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2016 | printk(KERN_INFO "scsi_debug: slave_configure <%u %u %u %u>\n", |
| 2017 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2018 | if (sdp->host->max_cmd_len != SCSI_DEBUG_MAX_CMD_LEN) |
| 2019 | sdp->host->max_cmd_len = SCSI_DEBUG_MAX_CMD_LEN; |
| 2020 | devip = devInfoReg(sdp); |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 2021 | if (NULL == devip) |
| 2022 | return 1; /* no resources, will be marked offline */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2023 | sdp->hostdata = devip; |
| 2024 | if (sdp->host->cmd_per_lun) |
| 2025 | scsi_adjust_queue_depth(sdp, SDEBUG_TAGGED_QUEUING, |
| 2026 | sdp->host->cmd_per_lun); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2027 | blk_queue_max_segment_size(sdp->request_queue, 256 * 1024); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2028 | return 0; |
| 2029 | } |
| 2030 | |
| 2031 | static void scsi_debug_slave_destroy(struct scsi_device * sdp) |
| 2032 | { |
| 2033 | struct sdebug_dev_info * devip = |
| 2034 | (struct sdebug_dev_info *)sdp->hostdata; |
| 2035 | |
| 2036 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2037 | printk(KERN_INFO "scsi_debug: slave_destroy <%u %u %u %u>\n", |
| 2038 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2039 | if (devip) { |
| 2040 | /* make this slot avaliable for re-use */ |
| 2041 | devip->used = 0; |
| 2042 | sdp->hostdata = NULL; |
| 2043 | } |
| 2044 | } |
| 2045 | |
| 2046 | static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev) |
| 2047 | { |
| 2048 | struct sdebug_host_info * sdbg_host; |
| 2049 | struct sdebug_dev_info * open_devip = NULL; |
| 2050 | struct sdebug_dev_info * devip = |
| 2051 | (struct sdebug_dev_info *)sdev->hostdata; |
| 2052 | |
| 2053 | if (devip) |
| 2054 | return devip; |
| 2055 | sdbg_host = *(struct sdebug_host_info **) sdev->host->hostdata; |
| 2056 | if(! sdbg_host) { |
| 2057 | printk(KERN_ERR "Host info NULL\n"); |
| 2058 | return NULL; |
| 2059 | } |
| 2060 | list_for_each_entry(devip, &sdbg_host->dev_info_list, dev_list) { |
| 2061 | if ((devip->used) && (devip->channel == sdev->channel) && |
| 2062 | (devip->target == sdev->id) && |
| 2063 | (devip->lun == sdev->lun)) |
| 2064 | return devip; |
| 2065 | else { |
| 2066 | if ((!devip->used) && (!open_devip)) |
| 2067 | open_devip = devip; |
| 2068 | } |
| 2069 | } |
| 2070 | if (NULL == open_devip) { /* try and make a new one */ |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 2071 | open_devip = kzalloc(sizeof(*open_devip),GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2072 | if (NULL == open_devip) { |
| 2073 | printk(KERN_ERR "%s: out of memory at line %d\n", |
| 2074 | __FUNCTION__, __LINE__); |
| 2075 | return NULL; |
| 2076 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2077 | open_devip->sdbg_host = sdbg_host; |
| 2078 | list_add_tail(&open_devip->dev_list, |
| 2079 | &sdbg_host->dev_info_list); |
| 2080 | } |
| 2081 | if (open_devip) { |
| 2082 | open_devip->channel = sdev->channel; |
| 2083 | open_devip->target = sdev->id; |
| 2084 | open_devip->lun = sdev->lun; |
| 2085 | open_devip->sdbg_host = sdbg_host; |
| 2086 | open_devip->reset = 1; |
| 2087 | open_devip->used = 1; |
| 2088 | memset(open_devip->sense_buff, 0, SDEBUG_SENSE_LEN); |
| 2089 | if (scsi_debug_dsense) |
| 2090 | open_devip->sense_buff[0] = 0x72; |
| 2091 | else { |
| 2092 | open_devip->sense_buff[0] = 0x70; |
| 2093 | open_devip->sense_buff[7] = 0xa; |
| 2094 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2095 | if (sdev->lun == SAM2_WLUN_REPORT_LUNS) |
| 2096 | open_devip->wlun = SAM2_WLUN_REPORT_LUNS & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2097 | return open_devip; |
| 2098 | } |
| 2099 | return NULL; |
| 2100 | } |
| 2101 | |
| 2102 | static void mk_sense_buffer(struct sdebug_dev_info * devip, int key, |
| 2103 | int asc, int asq) |
| 2104 | { |
| 2105 | unsigned char * sbuff; |
| 2106 | |
| 2107 | sbuff = devip->sense_buff; |
| 2108 | memset(sbuff, 0, SDEBUG_SENSE_LEN); |
| 2109 | if (scsi_debug_dsense) { |
| 2110 | sbuff[0] = 0x72; /* descriptor, current */ |
| 2111 | sbuff[1] = key; |
| 2112 | sbuff[2] = asc; |
| 2113 | sbuff[3] = asq; |
| 2114 | } else { |
| 2115 | sbuff[0] = 0x70; /* fixed, current */ |
| 2116 | sbuff[2] = key; |
| 2117 | sbuff[7] = 0xa; /* implies 18 byte sense buffer */ |
| 2118 | sbuff[12] = asc; |
| 2119 | sbuff[13] = asq; |
| 2120 | } |
| 2121 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 2122 | printk(KERN_INFO "scsi_debug: [sense_key,asc,ascq]: " |
| 2123 | "[0x%x,0x%x,0x%x]\n", key, asc, asq); |
| 2124 | } |
| 2125 | |
| 2126 | static int scsi_debug_abort(struct scsi_cmnd * SCpnt) |
| 2127 | { |
| 2128 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 2129 | printk(KERN_INFO "scsi_debug: abort\n"); |
| 2130 | ++num_aborts; |
| 2131 | stop_queued_cmnd(SCpnt); |
| 2132 | return SUCCESS; |
| 2133 | } |
| 2134 | |
| 2135 | static int scsi_debug_biosparam(struct scsi_device *sdev, |
| 2136 | struct block_device * bdev, sector_t capacity, int *info) |
| 2137 | { |
| 2138 | int res; |
| 2139 | unsigned char *buf; |
| 2140 | |
| 2141 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 2142 | printk(KERN_INFO "scsi_debug: biosparam\n"); |
| 2143 | buf = scsi_bios_ptable(bdev); |
| 2144 | if (buf) { |
| 2145 | res = scsi_partsize(buf, capacity, |
| 2146 | &info[2], &info[0], &info[1]); |
| 2147 | kfree(buf); |
| 2148 | if (! res) |
| 2149 | return res; |
| 2150 | } |
| 2151 | info[0] = sdebug_heads; |
| 2152 | info[1] = sdebug_sectors_per; |
| 2153 | info[2] = sdebug_cylinders_per; |
| 2154 | return 0; |
| 2155 | } |
| 2156 | |
| 2157 | static int scsi_debug_device_reset(struct scsi_cmnd * SCpnt) |
| 2158 | { |
| 2159 | struct sdebug_dev_info * devip; |
| 2160 | |
| 2161 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 2162 | printk(KERN_INFO "scsi_debug: device_reset\n"); |
| 2163 | ++num_dev_resets; |
| 2164 | if (SCpnt) { |
| 2165 | devip = devInfoReg(SCpnt->device); |
| 2166 | if (devip) |
| 2167 | devip->reset = 1; |
| 2168 | } |
| 2169 | return SUCCESS; |
| 2170 | } |
| 2171 | |
| 2172 | static int scsi_debug_bus_reset(struct scsi_cmnd * SCpnt) |
| 2173 | { |
| 2174 | struct sdebug_host_info *sdbg_host; |
| 2175 | struct sdebug_dev_info * dev_info; |
| 2176 | struct scsi_device * sdp; |
| 2177 | struct Scsi_Host * hp; |
| 2178 | |
| 2179 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 2180 | printk(KERN_INFO "scsi_debug: bus_reset\n"); |
| 2181 | ++num_bus_resets; |
| 2182 | if (SCpnt && ((sdp = SCpnt->device)) && ((hp = sdp->host))) { |
| 2183 | sdbg_host = *(struct sdebug_host_info **) hp->hostdata; |
| 2184 | if (sdbg_host) { |
| 2185 | list_for_each_entry(dev_info, |
| 2186 | &sdbg_host->dev_info_list, |
| 2187 | dev_list) |
| 2188 | dev_info->reset = 1; |
| 2189 | } |
| 2190 | } |
| 2191 | return SUCCESS; |
| 2192 | } |
| 2193 | |
| 2194 | static int scsi_debug_host_reset(struct scsi_cmnd * SCpnt) |
| 2195 | { |
| 2196 | struct sdebug_host_info * sdbg_host; |
| 2197 | struct sdebug_dev_info * dev_info; |
| 2198 | |
| 2199 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 2200 | printk(KERN_INFO "scsi_debug: host_reset\n"); |
| 2201 | ++num_host_resets; |
| 2202 | spin_lock(&sdebug_host_list_lock); |
| 2203 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { |
| 2204 | list_for_each_entry(dev_info, &sdbg_host->dev_info_list, |
| 2205 | dev_list) |
| 2206 | dev_info->reset = 1; |
| 2207 | } |
| 2208 | spin_unlock(&sdebug_host_list_lock); |
| 2209 | stop_all_queued(); |
| 2210 | return SUCCESS; |
| 2211 | } |
| 2212 | |
| 2213 | /* Returns 1 if found 'cmnd' and deleted its timer. else returns 0 */ |
| 2214 | static int stop_queued_cmnd(struct scsi_cmnd * cmnd) |
| 2215 | { |
| 2216 | unsigned long iflags; |
| 2217 | int k; |
| 2218 | struct sdebug_queued_cmd * sqcp; |
| 2219 | |
| 2220 | spin_lock_irqsave(&queued_arr_lock, iflags); |
| 2221 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { |
| 2222 | sqcp = &queued_arr[k]; |
| 2223 | if (sqcp->in_use && (cmnd == sqcp->a_cmnd)) { |
| 2224 | del_timer_sync(&sqcp->cmnd_timer); |
| 2225 | sqcp->in_use = 0; |
| 2226 | sqcp->a_cmnd = NULL; |
| 2227 | break; |
| 2228 | } |
| 2229 | } |
| 2230 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 2231 | return (k < SCSI_DEBUG_CANQUEUE) ? 1 : 0; |
| 2232 | } |
| 2233 | |
| 2234 | /* Deletes (stops) timers of all queued commands */ |
| 2235 | static void stop_all_queued(void) |
| 2236 | { |
| 2237 | unsigned long iflags; |
| 2238 | int k; |
| 2239 | struct sdebug_queued_cmd * sqcp; |
| 2240 | |
| 2241 | spin_lock_irqsave(&queued_arr_lock, iflags); |
| 2242 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { |
| 2243 | sqcp = &queued_arr[k]; |
| 2244 | if (sqcp->in_use && sqcp->a_cmnd) { |
| 2245 | del_timer_sync(&sqcp->cmnd_timer); |
| 2246 | sqcp->in_use = 0; |
| 2247 | sqcp->a_cmnd = NULL; |
| 2248 | } |
| 2249 | } |
| 2250 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 2251 | } |
| 2252 | |
| 2253 | /* Initializes timers in queued array */ |
| 2254 | static void __init init_all_queued(void) |
| 2255 | { |
| 2256 | unsigned long iflags; |
| 2257 | int k; |
| 2258 | struct sdebug_queued_cmd * sqcp; |
| 2259 | |
| 2260 | spin_lock_irqsave(&queued_arr_lock, iflags); |
| 2261 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { |
| 2262 | sqcp = &queued_arr[k]; |
| 2263 | init_timer(&sqcp->cmnd_timer); |
| 2264 | sqcp->in_use = 0; |
| 2265 | sqcp->a_cmnd = NULL; |
| 2266 | } |
| 2267 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 2268 | } |
| 2269 | |
| 2270 | static void __init sdebug_build_parts(unsigned char * ramp) |
| 2271 | { |
| 2272 | struct partition * pp; |
| 2273 | int starts[SDEBUG_MAX_PARTS + 2]; |
| 2274 | int sectors_per_part, num_sectors, k; |
| 2275 | int heads_by_sects, start_sec, end_sec; |
| 2276 | |
| 2277 | /* assume partition table already zeroed */ |
| 2278 | if ((scsi_debug_num_parts < 1) || (sdebug_store_size < 1048576)) |
| 2279 | return; |
| 2280 | if (scsi_debug_num_parts > SDEBUG_MAX_PARTS) { |
| 2281 | scsi_debug_num_parts = SDEBUG_MAX_PARTS; |
| 2282 | printk(KERN_WARNING "scsi_debug:build_parts: reducing " |
| 2283 | "partitions to %d\n", SDEBUG_MAX_PARTS); |
| 2284 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2285 | num_sectors = (int)sdebug_store_sectors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2286 | sectors_per_part = (num_sectors - sdebug_sectors_per) |
| 2287 | / scsi_debug_num_parts; |
| 2288 | heads_by_sects = sdebug_heads * sdebug_sectors_per; |
| 2289 | starts[0] = sdebug_sectors_per; |
| 2290 | for (k = 1; k < scsi_debug_num_parts; ++k) |
| 2291 | starts[k] = ((k * sectors_per_part) / heads_by_sects) |
| 2292 | * heads_by_sects; |
| 2293 | starts[scsi_debug_num_parts] = num_sectors; |
| 2294 | starts[scsi_debug_num_parts + 1] = 0; |
| 2295 | |
| 2296 | ramp[510] = 0x55; /* magic partition markings */ |
| 2297 | ramp[511] = 0xAA; |
| 2298 | pp = (struct partition *)(ramp + 0x1be); |
| 2299 | for (k = 0; starts[k + 1]; ++k, ++pp) { |
| 2300 | start_sec = starts[k]; |
| 2301 | end_sec = starts[k + 1] - 1; |
| 2302 | pp->boot_ind = 0; |
| 2303 | |
| 2304 | pp->cyl = start_sec / heads_by_sects; |
| 2305 | pp->head = (start_sec - (pp->cyl * heads_by_sects)) |
| 2306 | / sdebug_sectors_per; |
| 2307 | pp->sector = (start_sec % sdebug_sectors_per) + 1; |
| 2308 | |
| 2309 | pp->end_cyl = end_sec / heads_by_sects; |
| 2310 | pp->end_head = (end_sec - (pp->end_cyl * heads_by_sects)) |
| 2311 | / sdebug_sectors_per; |
| 2312 | pp->end_sector = (end_sec % sdebug_sectors_per) + 1; |
| 2313 | |
| 2314 | pp->start_sect = start_sec; |
| 2315 | pp->nr_sects = end_sec - start_sec + 1; |
| 2316 | pp->sys_ind = 0x83; /* plain Linux partition */ |
| 2317 | } |
| 2318 | } |
| 2319 | |
| 2320 | static int schedule_resp(struct scsi_cmnd * cmnd, |
| 2321 | struct sdebug_dev_info * devip, |
| 2322 | done_funct_t done, int scsi_result, int delta_jiff) |
| 2323 | { |
| 2324 | if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && cmnd) { |
| 2325 | if (scsi_result) { |
| 2326 | struct scsi_device * sdp = cmnd->device; |
| 2327 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2328 | printk(KERN_INFO "scsi_debug: <%u %u %u %u> " |
| 2329 | "non-zero result=0x%x\n", sdp->host->host_no, |
| 2330 | sdp->channel, sdp->id, sdp->lun, scsi_result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2331 | } |
| 2332 | } |
| 2333 | if (cmnd && devip) { |
| 2334 | /* simulate autosense by this driver */ |
| 2335 | if (SAM_STAT_CHECK_CONDITION == (scsi_result & 0xff)) |
| 2336 | memcpy(cmnd->sense_buffer, devip->sense_buff, |
| 2337 | (SCSI_SENSE_BUFFERSIZE > SDEBUG_SENSE_LEN) ? |
| 2338 | SDEBUG_SENSE_LEN : SCSI_SENSE_BUFFERSIZE); |
| 2339 | } |
| 2340 | if (delta_jiff <= 0) { |
| 2341 | if (cmnd) |
| 2342 | cmnd->result = scsi_result; |
| 2343 | if (done) |
| 2344 | done(cmnd); |
| 2345 | return 0; |
| 2346 | } else { |
| 2347 | unsigned long iflags; |
| 2348 | int k; |
| 2349 | struct sdebug_queued_cmd * sqcp = NULL; |
| 2350 | |
| 2351 | spin_lock_irqsave(&queued_arr_lock, iflags); |
| 2352 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { |
| 2353 | sqcp = &queued_arr[k]; |
| 2354 | if (! sqcp->in_use) |
| 2355 | break; |
| 2356 | } |
| 2357 | if (k >= SCSI_DEBUG_CANQUEUE) { |
| 2358 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 2359 | printk(KERN_WARNING "scsi_debug: can_queue exceeded\n"); |
| 2360 | return 1; /* report busy to mid level */ |
| 2361 | } |
| 2362 | sqcp->in_use = 1; |
| 2363 | sqcp->a_cmnd = cmnd; |
| 2364 | sqcp->scsi_result = scsi_result; |
| 2365 | sqcp->done_funct = done; |
| 2366 | sqcp->cmnd_timer.function = timer_intr_handler; |
| 2367 | sqcp->cmnd_timer.data = k; |
| 2368 | sqcp->cmnd_timer.expires = jiffies + delta_jiff; |
| 2369 | add_timer(&sqcp->cmnd_timer); |
| 2370 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 2371 | if (cmnd) |
| 2372 | cmnd->result = 0; |
| 2373 | return 0; |
| 2374 | } |
| 2375 | } |
| 2376 | |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2377 | /* Note: The following macros create attribute files in the |
| 2378 | /sys/module/scsi_debug/parameters directory. Unfortunately this |
| 2379 | driver is unaware of a change and cannot trigger auxiliary actions |
| 2380 | as it can when the corresponding attribute in the |
| 2381 | /sys/bus/pseudo/drivers/scsi_debug directory is changed. |
| 2382 | */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2383 | module_param_named(add_host, scsi_debug_add_host, int, S_IRUGO | S_IWUSR); |
| 2384 | module_param_named(delay, scsi_debug_delay, int, S_IRUGO | S_IWUSR); |
| 2385 | module_param_named(dev_size_mb, scsi_debug_dev_size_mb, int, S_IRUGO); |
| 2386 | module_param_named(dsense, scsi_debug_dsense, int, S_IRUGO | S_IWUSR); |
| 2387 | module_param_named(every_nth, scsi_debug_every_nth, int, S_IRUGO | S_IWUSR); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2388 | module_param_named(fake_rw, scsi_debug_fake_rw, int, S_IRUGO | S_IWUSR); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2389 | module_param_named(max_luns, scsi_debug_max_luns, int, S_IRUGO | S_IWUSR); |
| 2390 | module_param_named(no_lun_0, scsi_debug_no_lun_0, int, S_IRUGO | S_IWUSR); |
| 2391 | module_param_named(num_parts, scsi_debug_num_parts, int, S_IRUGO); |
| 2392 | module_param_named(num_tgts, scsi_debug_num_tgts, int, S_IRUGO | S_IWUSR); |
| 2393 | module_param_named(opts, scsi_debug_opts, int, S_IRUGO | S_IWUSR); |
| 2394 | module_param_named(ptype, scsi_debug_ptype, int, S_IRUGO | S_IWUSR); |
| 2395 | module_param_named(scsi_level, scsi_debug_scsi_level, int, S_IRUGO); |
| 2396 | module_param_named(virtual_gb, scsi_debug_virtual_gb, int, S_IRUGO | S_IWUSR); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2397 | module_param_named(vpd_use_hostno, scsi_debug_vpd_use_hostno, int, |
| 2398 | S_IRUGO | S_IWUSR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2399 | |
| 2400 | MODULE_AUTHOR("Eric Youngdale + Douglas Gilbert"); |
| 2401 | MODULE_DESCRIPTION("SCSI debug adapter driver"); |
| 2402 | MODULE_LICENSE("GPL"); |
| 2403 | MODULE_VERSION(SCSI_DEBUG_VERSION); |
| 2404 | |
| 2405 | MODULE_PARM_DESC(add_host, "0..127 hosts allowed(def=1)"); |
| 2406 | MODULE_PARM_DESC(delay, "# of jiffies to delay response(def=1)"); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2407 | MODULE_PARM_DESC(dev_size_mb, "size in MB of ram shared by devs(def=8)"); |
| 2408 | MODULE_PARM_DESC(dsense, "use descriptor sense format(def=0 -> fixed)"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2409 | MODULE_PARM_DESC(every_nth, "timeout every nth command(def=100)"); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2410 | MODULE_PARM_DESC(fake_rw, "fake reads/writes instead of copying (def=0)"); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2411 | MODULE_PARM_DESC(max_luns, "number of LUNs per target to simulate(def=1)"); |
| 2412 | MODULE_PARM_DESC(no_lun_0, "no LU number 0 (def=0 -> have lun 0)"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2413 | MODULE_PARM_DESC(num_parts, "number of partitions(def=0)"); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2414 | MODULE_PARM_DESC(num_tgts, "number of targets per host to simulate(def=1)"); |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 2415 | MODULE_PARM_DESC(opts, "1->noise, 2->medium_err, 4->timeout, 8->recovered_err... (def=0)"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2416 | MODULE_PARM_DESC(ptype, "SCSI peripheral type(def=0[disk])"); |
| 2417 | MODULE_PARM_DESC(scsi_level, "SCSI level to simulate(def=5[SPC-3])"); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2418 | MODULE_PARM_DESC(virtual_gb, "virtual gigabyte size (def=0 -> use dev_size_mb)"); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2419 | MODULE_PARM_DESC(vpd_use_hostno, "0 -> dev ids ignore hostno (def=1 -> unique dev ids)"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2420 | |
| 2421 | |
| 2422 | static char sdebug_info[256]; |
| 2423 | |
| 2424 | static const char * scsi_debug_info(struct Scsi_Host * shp) |
| 2425 | { |
| 2426 | sprintf(sdebug_info, "scsi_debug, version %s [%s], " |
| 2427 | "dev_size_mb=%d, opts=0x%x", SCSI_DEBUG_VERSION, |
| 2428 | scsi_debug_version_date, scsi_debug_dev_size_mb, |
| 2429 | scsi_debug_opts); |
| 2430 | return sdebug_info; |
| 2431 | } |
| 2432 | |
| 2433 | /* scsi_debug_proc_info |
| 2434 | * Used if the driver currently has no own support for /proc/scsi |
| 2435 | */ |
| 2436 | static int scsi_debug_proc_info(struct Scsi_Host *host, char *buffer, char **start, off_t offset, |
| 2437 | int length, int inout) |
| 2438 | { |
| 2439 | int len, pos, begin; |
| 2440 | int orig_length; |
| 2441 | |
| 2442 | orig_length = length; |
| 2443 | |
| 2444 | if (inout == 1) { |
| 2445 | char arr[16]; |
| 2446 | int minLen = length > 15 ? 15 : length; |
| 2447 | |
| 2448 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) |
| 2449 | return -EACCES; |
| 2450 | memcpy(arr, buffer, minLen); |
| 2451 | arr[minLen] = '\0'; |
| 2452 | if (1 != sscanf(arr, "%d", &pos)) |
| 2453 | return -EINVAL; |
| 2454 | scsi_debug_opts = pos; |
| 2455 | if (scsi_debug_every_nth != 0) |
| 2456 | scsi_debug_cmnd_count = 0; |
| 2457 | return length; |
| 2458 | } |
| 2459 | begin = 0; |
| 2460 | pos = len = sprintf(buffer, "scsi_debug adapter driver, version " |
| 2461 | "%s [%s]\n" |
| 2462 | "num_tgts=%d, shared (ram) size=%d MB, opts=0x%x, " |
| 2463 | "every_nth=%d(curr:%d)\n" |
| 2464 | "delay=%d, max_luns=%d, scsi_level=%d\n" |
| 2465 | "sector_size=%d bytes, cylinders=%d, heads=%d, sectors=%d\n" |
| 2466 | "number of aborts=%d, device_reset=%d, bus_resets=%d, " |
| 2467 | "host_resets=%d\n", |
| 2468 | SCSI_DEBUG_VERSION, scsi_debug_version_date, scsi_debug_num_tgts, |
| 2469 | scsi_debug_dev_size_mb, scsi_debug_opts, scsi_debug_every_nth, |
| 2470 | scsi_debug_cmnd_count, scsi_debug_delay, |
| 2471 | scsi_debug_max_luns, scsi_debug_scsi_level, |
| 2472 | SECT_SIZE, sdebug_cylinders_per, sdebug_heads, sdebug_sectors_per, |
| 2473 | num_aborts, num_dev_resets, num_bus_resets, num_host_resets); |
| 2474 | if (pos < offset) { |
| 2475 | len = 0; |
| 2476 | begin = pos; |
| 2477 | } |
| 2478 | *start = buffer + (offset - begin); /* Start of wanted data */ |
| 2479 | len -= (offset - begin); |
| 2480 | if (len > length) |
| 2481 | len = length; |
| 2482 | return len; |
| 2483 | } |
| 2484 | |
| 2485 | static ssize_t sdebug_delay_show(struct device_driver * ddp, char * buf) |
| 2486 | { |
| 2487 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_delay); |
| 2488 | } |
| 2489 | |
| 2490 | static ssize_t sdebug_delay_store(struct device_driver * ddp, |
| 2491 | const char * buf, size_t count) |
| 2492 | { |
| 2493 | int delay; |
| 2494 | char work[20]; |
| 2495 | |
| 2496 | if (1 == sscanf(buf, "%10s", work)) { |
| 2497 | if ((1 == sscanf(work, "%d", &delay)) && (delay >= 0)) { |
| 2498 | scsi_debug_delay = delay; |
| 2499 | return count; |
| 2500 | } |
| 2501 | } |
| 2502 | return -EINVAL; |
| 2503 | } |
| 2504 | DRIVER_ATTR(delay, S_IRUGO | S_IWUSR, sdebug_delay_show, |
| 2505 | sdebug_delay_store); |
| 2506 | |
| 2507 | static ssize_t sdebug_opts_show(struct device_driver * ddp, char * buf) |
| 2508 | { |
| 2509 | return scnprintf(buf, PAGE_SIZE, "0x%x\n", scsi_debug_opts); |
| 2510 | } |
| 2511 | |
| 2512 | static ssize_t sdebug_opts_store(struct device_driver * ddp, |
| 2513 | const char * buf, size_t count) |
| 2514 | { |
| 2515 | int opts; |
| 2516 | char work[20]; |
| 2517 | |
| 2518 | if (1 == sscanf(buf, "%10s", work)) { |
| 2519 | if (0 == strnicmp(work,"0x", 2)) { |
| 2520 | if (1 == sscanf(&work[2], "%x", &opts)) |
| 2521 | goto opts_done; |
| 2522 | } else { |
| 2523 | if (1 == sscanf(work, "%d", &opts)) |
| 2524 | goto opts_done; |
| 2525 | } |
| 2526 | } |
| 2527 | return -EINVAL; |
| 2528 | opts_done: |
| 2529 | scsi_debug_opts = opts; |
| 2530 | scsi_debug_cmnd_count = 0; |
| 2531 | return count; |
| 2532 | } |
| 2533 | DRIVER_ATTR(opts, S_IRUGO | S_IWUSR, sdebug_opts_show, |
| 2534 | sdebug_opts_store); |
| 2535 | |
| 2536 | static ssize_t sdebug_ptype_show(struct device_driver * ddp, char * buf) |
| 2537 | { |
| 2538 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ptype); |
| 2539 | } |
| 2540 | static ssize_t sdebug_ptype_store(struct device_driver * ddp, |
| 2541 | const char * buf, size_t count) |
| 2542 | { |
| 2543 | int n; |
| 2544 | |
| 2545 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2546 | scsi_debug_ptype = n; |
| 2547 | return count; |
| 2548 | } |
| 2549 | return -EINVAL; |
| 2550 | } |
| 2551 | DRIVER_ATTR(ptype, S_IRUGO | S_IWUSR, sdebug_ptype_show, sdebug_ptype_store); |
| 2552 | |
| 2553 | static ssize_t sdebug_dsense_show(struct device_driver * ddp, char * buf) |
| 2554 | { |
| 2555 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dsense); |
| 2556 | } |
| 2557 | static ssize_t sdebug_dsense_store(struct device_driver * ddp, |
| 2558 | const char * buf, size_t count) |
| 2559 | { |
| 2560 | int n; |
| 2561 | |
| 2562 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2563 | scsi_debug_dsense = n; |
| 2564 | return count; |
| 2565 | } |
| 2566 | return -EINVAL; |
| 2567 | } |
| 2568 | DRIVER_ATTR(dsense, S_IRUGO | S_IWUSR, sdebug_dsense_show, |
| 2569 | sdebug_dsense_store); |
| 2570 | |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2571 | static ssize_t sdebug_fake_rw_show(struct device_driver * ddp, char * buf) |
| 2572 | { |
| 2573 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_fake_rw); |
| 2574 | } |
| 2575 | static ssize_t sdebug_fake_rw_store(struct device_driver * ddp, |
| 2576 | const char * buf, size_t count) |
| 2577 | { |
| 2578 | int n; |
| 2579 | |
| 2580 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2581 | scsi_debug_fake_rw = n; |
| 2582 | return count; |
| 2583 | } |
| 2584 | return -EINVAL; |
| 2585 | } |
| 2586 | DRIVER_ATTR(fake_rw, S_IRUGO | S_IWUSR, sdebug_fake_rw_show, |
| 2587 | sdebug_fake_rw_store); |
| 2588 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2589 | static ssize_t sdebug_no_lun_0_show(struct device_driver * ddp, char * buf) |
| 2590 | { |
| 2591 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_no_lun_0); |
| 2592 | } |
| 2593 | static ssize_t sdebug_no_lun_0_store(struct device_driver * ddp, |
| 2594 | const char * buf, size_t count) |
| 2595 | { |
| 2596 | int n; |
| 2597 | |
| 2598 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2599 | scsi_debug_no_lun_0 = n; |
| 2600 | return count; |
| 2601 | } |
| 2602 | return -EINVAL; |
| 2603 | } |
| 2604 | DRIVER_ATTR(no_lun_0, S_IRUGO | S_IWUSR, sdebug_no_lun_0_show, |
| 2605 | sdebug_no_lun_0_store); |
| 2606 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2607 | static ssize_t sdebug_num_tgts_show(struct device_driver * ddp, char * buf) |
| 2608 | { |
| 2609 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_tgts); |
| 2610 | } |
| 2611 | static ssize_t sdebug_num_tgts_store(struct device_driver * ddp, |
| 2612 | const char * buf, size_t count) |
| 2613 | { |
| 2614 | int n; |
| 2615 | |
| 2616 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2617 | scsi_debug_num_tgts = n; |
| 2618 | sdebug_max_tgts_luns(); |
| 2619 | return count; |
| 2620 | } |
| 2621 | return -EINVAL; |
| 2622 | } |
| 2623 | DRIVER_ATTR(num_tgts, S_IRUGO | S_IWUSR, sdebug_num_tgts_show, |
| 2624 | sdebug_num_tgts_store); |
| 2625 | |
| 2626 | static ssize_t sdebug_dev_size_mb_show(struct device_driver * ddp, char * buf) |
| 2627 | { |
| 2628 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dev_size_mb); |
| 2629 | } |
| 2630 | DRIVER_ATTR(dev_size_mb, S_IRUGO, sdebug_dev_size_mb_show, NULL); |
| 2631 | |
| 2632 | static ssize_t sdebug_num_parts_show(struct device_driver * ddp, char * buf) |
| 2633 | { |
| 2634 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_parts); |
| 2635 | } |
| 2636 | DRIVER_ATTR(num_parts, S_IRUGO, sdebug_num_parts_show, NULL); |
| 2637 | |
| 2638 | static ssize_t sdebug_every_nth_show(struct device_driver * ddp, char * buf) |
| 2639 | { |
| 2640 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_every_nth); |
| 2641 | } |
| 2642 | static ssize_t sdebug_every_nth_store(struct device_driver * ddp, |
| 2643 | const char * buf, size_t count) |
| 2644 | { |
| 2645 | int nth; |
| 2646 | |
| 2647 | if ((count > 0) && (1 == sscanf(buf, "%d", &nth))) { |
| 2648 | scsi_debug_every_nth = nth; |
| 2649 | scsi_debug_cmnd_count = 0; |
| 2650 | return count; |
| 2651 | } |
| 2652 | return -EINVAL; |
| 2653 | } |
| 2654 | DRIVER_ATTR(every_nth, S_IRUGO | S_IWUSR, sdebug_every_nth_show, |
| 2655 | sdebug_every_nth_store); |
| 2656 | |
| 2657 | static ssize_t sdebug_max_luns_show(struct device_driver * ddp, char * buf) |
| 2658 | { |
| 2659 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_max_luns); |
| 2660 | } |
| 2661 | static ssize_t sdebug_max_luns_store(struct device_driver * ddp, |
| 2662 | const char * buf, size_t count) |
| 2663 | { |
| 2664 | int n; |
| 2665 | |
| 2666 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2667 | scsi_debug_max_luns = n; |
| 2668 | sdebug_max_tgts_luns(); |
| 2669 | return count; |
| 2670 | } |
| 2671 | return -EINVAL; |
| 2672 | } |
| 2673 | DRIVER_ATTR(max_luns, S_IRUGO | S_IWUSR, sdebug_max_luns_show, |
| 2674 | sdebug_max_luns_store); |
| 2675 | |
| 2676 | static ssize_t sdebug_scsi_level_show(struct device_driver * ddp, char * buf) |
| 2677 | { |
| 2678 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_scsi_level); |
| 2679 | } |
| 2680 | DRIVER_ATTR(scsi_level, S_IRUGO, sdebug_scsi_level_show, NULL); |
| 2681 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2682 | static ssize_t sdebug_virtual_gb_show(struct device_driver * ddp, char * buf) |
| 2683 | { |
| 2684 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_virtual_gb); |
| 2685 | } |
| 2686 | static ssize_t sdebug_virtual_gb_store(struct device_driver * ddp, |
| 2687 | const char * buf, size_t count) |
| 2688 | { |
| 2689 | int n; |
| 2690 | |
| 2691 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2692 | scsi_debug_virtual_gb = n; |
| 2693 | if (scsi_debug_virtual_gb > 0) { |
| 2694 | sdebug_capacity = 2048 * 1024; |
| 2695 | sdebug_capacity *= scsi_debug_virtual_gb; |
| 2696 | } else |
| 2697 | sdebug_capacity = sdebug_store_sectors; |
| 2698 | return count; |
| 2699 | } |
| 2700 | return -EINVAL; |
| 2701 | } |
| 2702 | DRIVER_ATTR(virtual_gb, S_IRUGO | S_IWUSR, sdebug_virtual_gb_show, |
| 2703 | sdebug_virtual_gb_store); |
| 2704 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2705 | static ssize_t sdebug_add_host_show(struct device_driver * ddp, char * buf) |
| 2706 | { |
| 2707 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_add_host); |
| 2708 | } |
| 2709 | |
| 2710 | static ssize_t sdebug_add_host_store(struct device_driver * ddp, |
| 2711 | const char * buf, size_t count) |
| 2712 | { |
| 2713 | int delta_hosts; |
| 2714 | char work[20]; |
| 2715 | |
| 2716 | if (1 != sscanf(buf, "%10s", work)) |
| 2717 | return -EINVAL; |
| 2718 | { /* temporary hack around sscanf() problem with -ve nums */ |
| 2719 | int neg = 0; |
| 2720 | |
| 2721 | if ('-' == *work) |
| 2722 | neg = 1; |
| 2723 | if (1 != sscanf(work + neg, "%d", &delta_hosts)) |
| 2724 | return -EINVAL; |
| 2725 | if (neg) |
| 2726 | delta_hosts = -delta_hosts; |
| 2727 | } |
| 2728 | if (delta_hosts > 0) { |
| 2729 | do { |
| 2730 | sdebug_add_adapter(); |
| 2731 | } while (--delta_hosts); |
| 2732 | } else if (delta_hosts < 0) { |
| 2733 | do { |
| 2734 | sdebug_remove_adapter(); |
| 2735 | } while (++delta_hosts); |
| 2736 | } |
| 2737 | return count; |
| 2738 | } |
| 2739 | DRIVER_ATTR(add_host, S_IRUGO | S_IWUSR, sdebug_add_host_show, |
| 2740 | sdebug_add_host_store); |
| 2741 | |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2742 | static ssize_t sdebug_vpd_use_hostno_show(struct device_driver * ddp, |
| 2743 | char * buf) |
| 2744 | { |
| 2745 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_vpd_use_hostno); |
| 2746 | } |
| 2747 | static ssize_t sdebug_vpd_use_hostno_store(struct device_driver * ddp, |
| 2748 | const char * buf, size_t count) |
| 2749 | { |
| 2750 | int n; |
| 2751 | |
| 2752 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2753 | scsi_debug_vpd_use_hostno = n; |
| 2754 | return count; |
| 2755 | } |
| 2756 | return -EINVAL; |
| 2757 | } |
| 2758 | DRIVER_ATTR(vpd_use_hostno, S_IRUGO | S_IWUSR, sdebug_vpd_use_hostno_show, |
| 2759 | sdebug_vpd_use_hostno_store); |
| 2760 | |
| 2761 | /* Note: The following function creates attribute files in the |
| 2762 | /sys/bus/pseudo/drivers/scsi_debug directory. The advantage of these |
| 2763 | files (over those found in the /sys/module/scsi_debug/parameters |
| 2764 | directory) is that auxiliary actions can be triggered when an attribute |
| 2765 | is changed. For example see: sdebug_add_host_store() above. |
| 2766 | */ |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2767 | static int do_create_driverfs_files(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2768 | { |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2769 | int ret; |
| 2770 | |
| 2771 | ret = driver_create_file(&sdebug_driverfs_driver, &driver_attr_add_host); |
| 2772 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_delay); |
| 2773 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dev_size_mb); |
| 2774 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dsense); |
| 2775 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_every_nth); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2776 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_fake_rw); |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2777 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_max_luns); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2778 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_no_lun_0); |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2779 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_num_parts); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2780 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_num_tgts); |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2781 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_ptype); |
| 2782 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_opts); |
| 2783 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_scsi_level); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2784 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_virtual_gb); |
| 2785 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_vpd_use_hostno); |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2786 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2787 | } |
| 2788 | |
| 2789 | static void do_remove_driverfs_files(void) |
| 2790 | { |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2791 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_vpd_use_hostno); |
| 2792 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_virtual_gb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2793 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_scsi_level); |
| 2794 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_opts); |
| 2795 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_ptype); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2796 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_num_tgts); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2797 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_num_parts); |
| 2798 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_no_lun_0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2799 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_max_luns); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2800 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_fake_rw); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2801 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_every_nth); |
| 2802 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dsense); |
| 2803 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dev_size_mb); |
| 2804 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_delay); |
| 2805 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_add_host); |
| 2806 | } |
| 2807 | |
| 2808 | static int __init scsi_debug_init(void) |
| 2809 | { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2810 | unsigned int sz; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2811 | int host_to_add; |
| 2812 | int k; |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2813 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2814 | |
| 2815 | if (scsi_debug_dev_size_mb < 1) |
| 2816 | scsi_debug_dev_size_mb = 1; /* force minimum 1 MB ramdisk */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2817 | sdebug_store_size = (unsigned int)scsi_debug_dev_size_mb * 1048576; |
| 2818 | sdebug_store_sectors = sdebug_store_size / SECT_SIZE; |
| 2819 | if (scsi_debug_virtual_gb > 0) { |
| 2820 | sdebug_capacity = 2048 * 1024; |
| 2821 | sdebug_capacity *= scsi_debug_virtual_gb; |
| 2822 | } else |
| 2823 | sdebug_capacity = sdebug_store_sectors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2824 | |
| 2825 | /* play around with geometry, don't waste too much on track 0 */ |
| 2826 | sdebug_heads = 8; |
| 2827 | sdebug_sectors_per = 32; |
| 2828 | if (scsi_debug_dev_size_mb >= 16) |
| 2829 | sdebug_heads = 32; |
| 2830 | else if (scsi_debug_dev_size_mb >= 256) |
| 2831 | sdebug_heads = 64; |
| 2832 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / |
| 2833 | (sdebug_sectors_per * sdebug_heads); |
| 2834 | if (sdebug_cylinders_per >= 1024) { |
| 2835 | /* other LLDs do this; implies >= 1GB ram disk ... */ |
| 2836 | sdebug_heads = 255; |
| 2837 | sdebug_sectors_per = 63; |
| 2838 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / |
| 2839 | (sdebug_sectors_per * sdebug_heads); |
| 2840 | } |
| 2841 | |
| 2842 | sz = sdebug_store_size; |
| 2843 | fake_storep = vmalloc(sz); |
| 2844 | if (NULL == fake_storep) { |
| 2845 | printk(KERN_ERR "scsi_debug_init: out of memory, 1\n"); |
| 2846 | return -ENOMEM; |
| 2847 | } |
| 2848 | memset(fake_storep, 0, sz); |
| 2849 | if (scsi_debug_num_parts > 0) |
| 2850 | sdebug_build_parts(fake_storep); |
| 2851 | |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2852 | ret = device_register(&pseudo_primary); |
| 2853 | if (ret < 0) { |
| 2854 | printk(KERN_WARNING "scsi_debug: device_register error: %d\n", |
| 2855 | ret); |
| 2856 | goto free_vm; |
| 2857 | } |
| 2858 | ret = bus_register(&pseudo_lld_bus); |
| 2859 | if (ret < 0) { |
| 2860 | printk(KERN_WARNING "scsi_debug: bus_register error: %d\n", |
| 2861 | ret); |
| 2862 | goto dev_unreg; |
| 2863 | } |
| 2864 | ret = driver_register(&sdebug_driverfs_driver); |
| 2865 | if (ret < 0) { |
| 2866 | printk(KERN_WARNING "scsi_debug: driver_register error: %d\n", |
| 2867 | ret); |
| 2868 | goto bus_unreg; |
| 2869 | } |
| 2870 | ret = do_create_driverfs_files(); |
| 2871 | if (ret < 0) { |
| 2872 | printk(KERN_WARNING "scsi_debug: driver_create_file error: %d\n", |
| 2873 | ret); |
| 2874 | goto del_files; |
| 2875 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2876 | |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2877 | init_all_queued(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2878 | |
| 2879 | sdebug_driver_template.proc_name = (char *)sdebug_proc_name; |
| 2880 | |
| 2881 | host_to_add = scsi_debug_add_host; |
| 2882 | scsi_debug_add_host = 0; |
| 2883 | |
| 2884 | for (k = 0; k < host_to_add; k++) { |
| 2885 | if (sdebug_add_adapter()) { |
| 2886 | printk(KERN_ERR "scsi_debug_init: " |
| 2887 | "sdebug_add_adapter failed k=%d\n", k); |
| 2888 | break; |
| 2889 | } |
| 2890 | } |
| 2891 | |
| 2892 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { |
| 2893 | printk(KERN_INFO "scsi_debug_init: built %d host(s)\n", |
| 2894 | scsi_debug_add_host); |
| 2895 | } |
| 2896 | return 0; |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2897 | |
| 2898 | del_files: |
| 2899 | do_remove_driverfs_files(); |
| 2900 | driver_unregister(&sdebug_driverfs_driver); |
| 2901 | bus_unreg: |
| 2902 | bus_unregister(&pseudo_lld_bus); |
| 2903 | dev_unreg: |
| 2904 | device_unregister(&pseudo_primary); |
| 2905 | free_vm: |
| 2906 | vfree(fake_storep); |
| 2907 | |
| 2908 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2909 | } |
| 2910 | |
| 2911 | static void __exit scsi_debug_exit(void) |
| 2912 | { |
| 2913 | int k = scsi_debug_add_host; |
| 2914 | |
| 2915 | stop_all_queued(); |
| 2916 | for (; k; k--) |
| 2917 | sdebug_remove_adapter(); |
| 2918 | do_remove_driverfs_files(); |
| 2919 | driver_unregister(&sdebug_driverfs_driver); |
| 2920 | bus_unregister(&pseudo_lld_bus); |
| 2921 | device_unregister(&pseudo_primary); |
| 2922 | |
| 2923 | vfree(fake_storep); |
| 2924 | } |
| 2925 | |
| 2926 | device_initcall(scsi_debug_init); |
| 2927 | module_exit(scsi_debug_exit); |
| 2928 | |
Adrian Bunk | 52c1da3 | 2005-06-23 22:05:33 -0700 | [diff] [blame] | 2929 | static void pseudo_0_release(struct device * dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2930 | { |
| 2931 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 2932 | printk(KERN_INFO "scsi_debug: pseudo_0_release() called\n"); |
| 2933 | } |
| 2934 | |
| 2935 | static struct device pseudo_primary = { |
| 2936 | .bus_id = "pseudo_0", |
| 2937 | .release = pseudo_0_release, |
| 2938 | }; |
| 2939 | |
| 2940 | static int pseudo_lld_bus_match(struct device *dev, |
| 2941 | struct device_driver *dev_driver) |
| 2942 | { |
| 2943 | return 1; |
| 2944 | } |
| 2945 | |
| 2946 | static struct bus_type pseudo_lld_bus = { |
| 2947 | .name = "pseudo", |
| 2948 | .match = pseudo_lld_bus_match, |
Russell King | bbbe3a4 | 2006-01-05 14:44:46 +0000 | [diff] [blame] | 2949 | .probe = sdebug_driver_probe, |
| 2950 | .remove = sdebug_driver_remove, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2951 | }; |
| 2952 | |
| 2953 | static void sdebug_release_adapter(struct device * dev) |
| 2954 | { |
| 2955 | struct sdebug_host_info *sdbg_host; |
| 2956 | |
| 2957 | sdbg_host = to_sdebug_host(dev); |
| 2958 | kfree(sdbg_host); |
| 2959 | } |
| 2960 | |
| 2961 | static int sdebug_add_adapter(void) |
| 2962 | { |
| 2963 | int k, devs_per_host; |
| 2964 | int error = 0; |
| 2965 | struct sdebug_host_info *sdbg_host; |
| 2966 | struct sdebug_dev_info *sdbg_devinfo; |
| 2967 | struct list_head *lh, *lh_sf; |
| 2968 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2969 | sdbg_host = kzalloc(sizeof(*sdbg_host),GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2970 | if (NULL == sdbg_host) { |
| 2971 | printk(KERN_ERR "%s: out of memory at line %d\n", |
| 2972 | __FUNCTION__, __LINE__); |
| 2973 | return -ENOMEM; |
| 2974 | } |
| 2975 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2976 | INIT_LIST_HEAD(&sdbg_host->dev_info_list); |
| 2977 | |
| 2978 | devs_per_host = scsi_debug_num_tgts * scsi_debug_max_luns; |
| 2979 | for (k = 0; k < devs_per_host; k++) { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2980 | sdbg_devinfo = kzalloc(sizeof(*sdbg_devinfo),GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2981 | if (NULL == sdbg_devinfo) { |
| 2982 | printk(KERN_ERR "%s: out of memory at line %d\n", |
| 2983 | __FUNCTION__, __LINE__); |
| 2984 | error = -ENOMEM; |
| 2985 | goto clean; |
| 2986 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2987 | sdbg_devinfo->sdbg_host = sdbg_host; |
| 2988 | list_add_tail(&sdbg_devinfo->dev_list, |
| 2989 | &sdbg_host->dev_info_list); |
| 2990 | } |
| 2991 | |
| 2992 | spin_lock(&sdebug_host_list_lock); |
| 2993 | list_add_tail(&sdbg_host->host_list, &sdebug_host_list); |
| 2994 | spin_unlock(&sdebug_host_list_lock); |
| 2995 | |
| 2996 | sdbg_host->dev.bus = &pseudo_lld_bus; |
| 2997 | sdbg_host->dev.parent = &pseudo_primary; |
| 2998 | sdbg_host->dev.release = &sdebug_release_adapter; |
| 2999 | sprintf(sdbg_host->dev.bus_id, "adapter%d", scsi_debug_add_host); |
| 3000 | |
| 3001 | error = device_register(&sdbg_host->dev); |
| 3002 | |
| 3003 | if (error) |
| 3004 | goto clean; |
| 3005 | |
| 3006 | ++scsi_debug_add_host; |
| 3007 | return error; |
| 3008 | |
| 3009 | clean: |
| 3010 | list_for_each_safe(lh, lh_sf, &sdbg_host->dev_info_list) { |
| 3011 | sdbg_devinfo = list_entry(lh, struct sdebug_dev_info, |
| 3012 | dev_list); |
| 3013 | list_del(&sdbg_devinfo->dev_list); |
| 3014 | kfree(sdbg_devinfo); |
| 3015 | } |
| 3016 | |
| 3017 | kfree(sdbg_host); |
| 3018 | return error; |
| 3019 | } |
| 3020 | |
| 3021 | static void sdebug_remove_adapter(void) |
| 3022 | { |
| 3023 | struct sdebug_host_info * sdbg_host = NULL; |
| 3024 | |
| 3025 | spin_lock(&sdebug_host_list_lock); |
| 3026 | if (!list_empty(&sdebug_host_list)) { |
| 3027 | sdbg_host = list_entry(sdebug_host_list.prev, |
| 3028 | struct sdebug_host_info, host_list); |
| 3029 | list_del(&sdbg_host->host_list); |
| 3030 | } |
| 3031 | spin_unlock(&sdebug_host_list_lock); |
| 3032 | |
| 3033 | if (!sdbg_host) |
| 3034 | return; |
| 3035 | |
| 3036 | device_unregister(&sdbg_host->dev); |
| 3037 | --scsi_debug_add_host; |
| 3038 | } |
| 3039 | |
| 3040 | static int sdebug_driver_probe(struct device * dev) |
| 3041 | { |
| 3042 | int error = 0; |
| 3043 | struct sdebug_host_info *sdbg_host; |
| 3044 | struct Scsi_Host *hpnt; |
| 3045 | |
| 3046 | sdbg_host = to_sdebug_host(dev); |
| 3047 | |
| 3048 | hpnt = scsi_host_alloc(&sdebug_driver_template, sizeof(sdbg_host)); |
| 3049 | if (NULL == hpnt) { |
| 3050 | printk(KERN_ERR "%s: scsi_register failed\n", __FUNCTION__); |
| 3051 | error = -ENODEV; |
| 3052 | return error; |
| 3053 | } |
| 3054 | |
| 3055 | sdbg_host->shost = hpnt; |
| 3056 | *((struct sdebug_host_info **)hpnt->hostdata) = sdbg_host; |
| 3057 | if ((hpnt->this_id >= 0) && (scsi_debug_num_tgts > hpnt->this_id)) |
| 3058 | hpnt->max_id = scsi_debug_num_tgts + 1; |
| 3059 | else |
| 3060 | hpnt->max_id = scsi_debug_num_tgts; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 3061 | hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; /* = scsi_debug_max_luns; */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3062 | |
| 3063 | error = scsi_add_host(hpnt, &sdbg_host->dev); |
| 3064 | if (error) { |
| 3065 | printk(KERN_ERR "%s: scsi_add_host failed\n", __FUNCTION__); |
| 3066 | error = -ENODEV; |
| 3067 | scsi_host_put(hpnt); |
| 3068 | } else |
| 3069 | scsi_scan_host(hpnt); |
| 3070 | |
| 3071 | |
| 3072 | return error; |
| 3073 | } |
| 3074 | |
| 3075 | static int sdebug_driver_remove(struct device * dev) |
| 3076 | { |
| 3077 | struct list_head *lh, *lh_sf; |
| 3078 | struct sdebug_host_info *sdbg_host; |
| 3079 | struct sdebug_dev_info *sdbg_devinfo; |
| 3080 | |
| 3081 | sdbg_host = to_sdebug_host(dev); |
| 3082 | |
| 3083 | if (!sdbg_host) { |
| 3084 | printk(KERN_ERR "%s: Unable to locate host info\n", |
| 3085 | __FUNCTION__); |
| 3086 | return -ENODEV; |
| 3087 | } |
| 3088 | |
| 3089 | scsi_remove_host(sdbg_host->shost); |
| 3090 | |
| 3091 | list_for_each_safe(lh, lh_sf, &sdbg_host->dev_info_list) { |
| 3092 | sdbg_devinfo = list_entry(lh, struct sdebug_dev_info, |
| 3093 | dev_list); |
| 3094 | list_del(&sdbg_devinfo->dev_list); |
| 3095 | kfree(sdbg_devinfo); |
| 3096 | } |
| 3097 | |
| 3098 | scsi_host_put(sdbg_host->shost); |
| 3099 | return 0; |
| 3100 | } |
| 3101 | |
| 3102 | static void sdebug_max_tgts_luns(void) |
| 3103 | { |
| 3104 | struct sdebug_host_info * sdbg_host; |
| 3105 | struct Scsi_Host *hpnt; |
| 3106 | |
| 3107 | spin_lock(&sdebug_host_list_lock); |
| 3108 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { |
| 3109 | hpnt = sdbg_host->shost; |
| 3110 | if ((hpnt->this_id >= 0) && |
| 3111 | (scsi_debug_num_tgts > hpnt->this_id)) |
| 3112 | hpnt->max_id = scsi_debug_num_tgts + 1; |
| 3113 | else |
| 3114 | hpnt->max_id = scsi_debug_num_tgts; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 3115 | hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; /* scsi_debug_max_luns; */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3116 | } |
| 3117 | spin_unlock(&sdebug_host_list_lock); |
| 3118 | } |