Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/kernel/scsi_debug.c |
| 3 | * vvvvvvvvvvvvvvvvvvvvvvv Original vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv |
| 4 | * Copyright (C) 1992 Eric Youngdale |
| 5 | * Simulate a host adapter with 2 disks attached. Do a lot of checking |
| 6 | * to make sure that we are not getting blocks mixed up, and PANIC if |
| 7 | * anything out of the ordinary is seen. |
| 8 | * ^^^^^^^^^^^^^^^^^^^^^^^ Original ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |
| 9 | * |
| 10 | * This version is more generic, simulating a variable number of disk |
| 11 | * (or disk like devices) sharing a common amount of RAM |
| 12 | * |
| 13 | * |
| 14 | * For documentation see http://www.torque.net/sg/sdebug26.html |
| 15 | * |
| 16 | * D. Gilbert (dpg) work for Magneto-Optical device test [20010421] |
| 17 | * dpg: work for devfs large number of disks [20010809] |
| 18 | * forked for lk 2.5 series [20011216, 20020101] |
| 19 | * use vmalloc() more inquiry+mode_sense [20020302] |
| 20 | * add timers for delayed responses [20020721] |
| 21 | * Patrick Mansfield <patmans@us.ibm.com> max_luns+scsi_level [20021031] |
| 22 | * Mike Anderson <andmike@us.ibm.com> sysfs work [20021118] |
| 23 | * dpg: change style of boot options to "scsi_debug.num_tgts=2" and |
| 24 | * module options to "modprobe scsi_debug num_tgts=2" [20021221] |
| 25 | */ |
| 26 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | #include <linux/module.h> |
| 28 | |
| 29 | #include <linux/kernel.h> |
| 30 | #include <linux/sched.h> |
| 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 | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 53 | #define SCSI_DEBUG_VERSION "1.79" |
| 54 | static const char * scsi_debug_version_date = "20060604"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | |
| 56 | /* Additional Sense Code (ASC) used */ |
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 | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 67 | #define THRESHOLD_EXCEEDED 0x5d |
| 68 | #define LOW_POWER_COND_ON 0x5e |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | |
| 70 | #define SDEBUG_TAGGED_QUEUING 0 /* 0 | MSG_SIMPLE_TAG | MSG_ORDERED_TAG */ |
| 71 | |
| 72 | /* Default values for driver parameters */ |
| 73 | #define DEF_NUM_HOST 1 |
| 74 | #define DEF_NUM_TGTS 1 |
| 75 | #define DEF_MAX_LUNS 1 |
| 76 | /* With these defaults, this driver will make 1 host with 1 target |
| 77 | * (id 0) containing 1 logical unit (lun 0). That is 1 device. |
| 78 | */ |
| 79 | #define DEF_DELAY 1 |
| 80 | #define DEF_DEV_SIZE_MB 8 |
| 81 | #define DEF_EVERY_NTH 0 |
| 82 | #define DEF_NUM_PARTS 0 |
| 83 | #define DEF_OPTS 0 |
| 84 | #define DEF_SCSI_LEVEL 5 /* INQUIRY, byte2 [5->SPC-3] */ |
| 85 | #define DEF_PTYPE 0 |
| 86 | #define DEF_D_SENSE 0 |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 87 | #define DEF_NO_LUN_0 0 |
| 88 | #define DEF_VIRTUAL_GB 0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | |
| 90 | /* bit mask values for scsi_debug_opts */ |
| 91 | #define SCSI_DEBUG_OPT_NOISE 1 |
| 92 | #define SCSI_DEBUG_OPT_MEDIUM_ERR 2 |
| 93 | #define SCSI_DEBUG_OPT_TIMEOUT 4 |
| 94 | #define SCSI_DEBUG_OPT_RECOVERED_ERR 8 |
| 95 | /* When "every_nth" > 0 then modulo "every_nth" commands: |
| 96 | * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set |
| 97 | * - a RECOVERED_ERROR is simulated on successful read and write |
| 98 | * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. |
| 99 | * |
| 100 | * When "every_nth" < 0 then after "- every_nth" commands: |
| 101 | * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set |
| 102 | * - a RECOVERED_ERROR is simulated on successful read and write |
| 103 | * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. |
| 104 | * This will continue until some other action occurs (e.g. the user |
| 105 | * writing a new value (other than -1 or 1) to every_nth via sysfs). |
| 106 | */ |
| 107 | |
| 108 | /* when 1==SCSI_DEBUG_OPT_MEDIUM_ERR, a medium error is simulated at this |
| 109 | * sector on read commands: */ |
| 110 | #define OPT_MEDIUM_ERR_ADDR 0x1234 /* that's sector 4660 in decimal */ |
| 111 | |
| 112 | /* If REPORT LUNS has luns >= 256 it can choose "flat space" (value 1) |
| 113 | * or "peripheral device" addressing (value 0) */ |
| 114 | #define SAM2_LUN_ADDRESS_METHOD 0 |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 115 | #define SAM2_WLUN_REPORT_LUNS 0xc101 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | |
| 117 | static int scsi_debug_add_host = DEF_NUM_HOST; |
| 118 | static int scsi_debug_delay = DEF_DELAY; |
| 119 | static int scsi_debug_dev_size_mb = DEF_DEV_SIZE_MB; |
| 120 | static int scsi_debug_every_nth = DEF_EVERY_NTH; |
| 121 | static int scsi_debug_max_luns = DEF_MAX_LUNS; |
| 122 | static int scsi_debug_num_parts = DEF_NUM_PARTS; |
| 123 | static int scsi_debug_num_tgts = DEF_NUM_TGTS; /* targets per host */ |
| 124 | static int scsi_debug_opts = DEF_OPTS; |
| 125 | static int scsi_debug_scsi_level = DEF_SCSI_LEVEL; |
| 126 | static int scsi_debug_ptype = DEF_PTYPE; /* SCSI peripheral type (0==disk) */ |
| 127 | static int scsi_debug_dsense = DEF_D_SENSE; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 128 | static int scsi_debug_no_lun_0 = DEF_NO_LUN_0; |
| 129 | static int scsi_debug_virtual_gb = DEF_VIRTUAL_GB; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | |
| 131 | static int scsi_debug_cmnd_count = 0; |
| 132 | |
| 133 | #define DEV_READONLY(TGT) (0) |
| 134 | #define DEV_REMOVEABLE(TGT) (0) |
| 135 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 136 | static unsigned int sdebug_store_size; /* in bytes */ |
| 137 | static unsigned int sdebug_store_sectors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | static sector_t sdebug_capacity; /* in sectors */ |
| 139 | |
| 140 | /* old BIOS stuff, kernel may get rid of them but some mode sense pages |
| 141 | may still need them */ |
| 142 | static int sdebug_heads; /* heads per disk */ |
| 143 | static int sdebug_cylinders_per; /* cylinders per surface */ |
| 144 | static int sdebug_sectors_per; /* sectors per cylinder */ |
| 145 | |
| 146 | /* default sector size is 512 bytes, 2**9 bytes */ |
| 147 | #define POW2_SECT_SIZE 9 |
| 148 | #define SECT_SIZE (1 << POW2_SECT_SIZE) |
| 149 | #define SECT_SIZE_PER(TGT) SECT_SIZE |
| 150 | |
| 151 | #define SDEBUG_MAX_PARTS 4 |
| 152 | |
| 153 | #define SDEBUG_SENSE_LEN 32 |
| 154 | |
| 155 | struct sdebug_dev_info { |
| 156 | struct list_head dev_list; |
| 157 | unsigned char sense_buff[SDEBUG_SENSE_LEN]; /* weak nexus */ |
| 158 | unsigned int channel; |
| 159 | unsigned int target; |
| 160 | unsigned int lun; |
| 161 | struct sdebug_host_info *sdbg_host; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 162 | unsigned int wlun; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | char reset; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 164 | char stopped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | char used; |
| 166 | }; |
| 167 | |
| 168 | struct sdebug_host_info { |
| 169 | struct list_head host_list; |
| 170 | struct Scsi_Host *shost; |
| 171 | struct device dev; |
| 172 | struct list_head dev_info_list; |
| 173 | }; |
| 174 | |
| 175 | #define to_sdebug_host(d) \ |
| 176 | container_of(d, struct sdebug_host_info, dev) |
| 177 | |
| 178 | static LIST_HEAD(sdebug_host_list); |
| 179 | static DEFINE_SPINLOCK(sdebug_host_list_lock); |
| 180 | |
| 181 | typedef void (* done_funct_t) (struct scsi_cmnd *); |
| 182 | |
| 183 | struct sdebug_queued_cmd { |
| 184 | int in_use; |
| 185 | struct timer_list cmnd_timer; |
| 186 | done_funct_t done_funct; |
| 187 | struct scsi_cmnd * a_cmnd; |
| 188 | int scsi_result; |
| 189 | }; |
| 190 | static struct sdebug_queued_cmd queued_arr[SCSI_DEBUG_CANQUEUE]; |
| 191 | |
Christoph Hellwig | d0be4a7d | 2005-10-31 18:31:40 +0100 | [diff] [blame] | 192 | static struct scsi_host_template sdebug_driver_template = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | .proc_info = scsi_debug_proc_info, |
| 194 | .name = "SCSI DEBUG", |
| 195 | .info = scsi_debug_info, |
| 196 | .slave_alloc = scsi_debug_slave_alloc, |
| 197 | .slave_configure = scsi_debug_slave_configure, |
| 198 | .slave_destroy = scsi_debug_slave_destroy, |
| 199 | .ioctl = scsi_debug_ioctl, |
| 200 | .queuecommand = scsi_debug_queuecommand, |
| 201 | .eh_abort_handler = scsi_debug_abort, |
| 202 | .eh_bus_reset_handler = scsi_debug_bus_reset, |
| 203 | .eh_device_reset_handler = scsi_debug_device_reset, |
| 204 | .eh_host_reset_handler = scsi_debug_host_reset, |
| 205 | .bios_param = scsi_debug_biosparam, |
| 206 | .can_queue = SCSI_DEBUG_CANQUEUE, |
| 207 | .this_id = 7, |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 208 | .sg_tablesize = 256, |
| 209 | .cmd_per_lun = 16, |
| 210 | .max_sectors = 0xffff, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | .unchecked_isa_dma = 0, |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 212 | .use_clustering = ENABLE_CLUSTERING, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | .module = THIS_MODULE, |
| 214 | }; |
| 215 | |
| 216 | static unsigned char * fake_storep; /* ramdisk storage */ |
| 217 | |
| 218 | static int num_aborts = 0; |
| 219 | static int num_dev_resets = 0; |
| 220 | static int num_bus_resets = 0; |
| 221 | static int num_host_resets = 0; |
| 222 | |
| 223 | static DEFINE_SPINLOCK(queued_arr_lock); |
| 224 | static DEFINE_RWLOCK(atomic_rw); |
| 225 | |
| 226 | static char sdebug_proc_name[] = "scsi_debug"; |
| 227 | |
| 228 | static int sdebug_driver_probe(struct device *); |
| 229 | static int sdebug_driver_remove(struct device *); |
| 230 | static struct bus_type pseudo_lld_bus; |
| 231 | |
| 232 | static struct device_driver sdebug_driverfs_driver = { |
| 233 | .name = sdebug_proc_name, |
| 234 | .bus = &pseudo_lld_bus, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | }; |
| 236 | |
| 237 | static const int check_condition_result = |
| 238 | (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
| 239 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 240 | static unsigned char ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, |
| 241 | 0, 0, 0x2, 0x4b}; |
| 242 | static unsigned char iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, |
| 243 | 0, 0, 0x0, 0x0}; |
| 244 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | /* function declarations */ |
| 246 | static int resp_inquiry(struct scsi_cmnd * SCpnt, int target, |
| 247 | struct sdebug_dev_info * devip); |
| 248 | static int resp_requests(struct scsi_cmnd * SCpnt, |
| 249 | struct sdebug_dev_info * devip); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 250 | static int resp_start_stop(struct scsi_cmnd * scp, |
| 251 | struct sdebug_dev_info * devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | static int resp_readcap(struct scsi_cmnd * SCpnt, |
| 253 | struct sdebug_dev_info * devip); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 254 | static int resp_readcap16(struct scsi_cmnd * SCpnt, |
| 255 | struct sdebug_dev_info * devip); |
| 256 | static int resp_mode_sense(struct scsi_cmnd * scp, int target, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | struct sdebug_dev_info * devip); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 258 | static int resp_mode_select(struct scsi_cmnd * scp, int mselect6, |
| 259 | struct sdebug_dev_info * devip); |
| 260 | static int resp_log_sense(struct scsi_cmnd * scp, |
| 261 | struct sdebug_dev_info * devip); |
| 262 | static int resp_read(struct scsi_cmnd * SCpnt, unsigned long long lba, |
| 263 | unsigned int num, struct sdebug_dev_info * devip); |
| 264 | static int resp_write(struct scsi_cmnd * SCpnt, unsigned long long lba, |
| 265 | unsigned int num, struct sdebug_dev_info * devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | static int resp_report_luns(struct scsi_cmnd * SCpnt, |
| 267 | struct sdebug_dev_info * devip); |
| 268 | static int fill_from_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr, |
| 269 | int arr_len); |
| 270 | static int fetch_to_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr, |
| 271 | int max_arr_len); |
| 272 | static void timer_intr_handler(unsigned long); |
| 273 | static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev); |
| 274 | static void mk_sense_buffer(struct sdebug_dev_info * devip, int key, |
| 275 | int asc, int asq); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 276 | static int check_readiness(struct scsi_cmnd * SCpnt, int reset_only, |
| 277 | struct sdebug_dev_info * devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | static int schedule_resp(struct scsi_cmnd * cmnd, |
| 279 | struct sdebug_dev_info * devip, |
| 280 | done_funct_t done, int scsi_result, int delta_jiff); |
| 281 | static void __init sdebug_build_parts(unsigned char * ramp); |
| 282 | static void __init init_all_queued(void); |
| 283 | static void stop_all_queued(void); |
| 284 | static int stop_queued_cmnd(struct scsi_cmnd * cmnd); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 285 | static int inquiry_evpd_83(unsigned char * arr, int target_dev_id, |
| 286 | int dev_id_num, const char * dev_id_str, |
| 287 | int dev_id_str_len); |
| 288 | static int inquiry_evpd_88(unsigned char * arr, int target_dev_id); |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 289 | static int do_create_driverfs_files(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | static void do_remove_driverfs_files(void); |
| 291 | |
| 292 | static int sdebug_add_adapter(void); |
| 293 | static void sdebug_remove_adapter(void); |
| 294 | static void sdebug_max_tgts_luns(void); |
| 295 | |
| 296 | static struct device pseudo_primary; |
| 297 | static struct bus_type pseudo_lld_bus; |
| 298 | |
| 299 | |
| 300 | static |
| 301 | int scsi_debug_queuecommand(struct scsi_cmnd * SCpnt, done_funct_t done) |
| 302 | { |
| 303 | unsigned char *cmd = (unsigned char *) SCpnt->cmnd; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 304 | int len, k, j; |
| 305 | unsigned int num; |
| 306 | unsigned long long lba; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | int errsts = 0; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 308 | int target = SCpnt->device->id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | struct sdebug_dev_info * devip = NULL; |
| 310 | int inj_recovered = 0; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 311 | int delay_override = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | |
| 313 | if (done == NULL) |
| 314 | return 0; /* assume mid level reprocessing command */ |
| 315 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 316 | SCpnt->resid = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && cmd) { |
| 318 | printk(KERN_INFO "scsi_debug: cmd "); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 319 | for (k = 0, len = SCpnt->cmd_len; k < len; ++k) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | printk("%02x ", (int)cmd[k]); |
| 321 | printk("\n"); |
| 322 | } |
| 323 | if(target == sdebug_driver_template.this_id) { |
| 324 | printk(KERN_INFO "scsi_debug: initiator's id used as " |
| 325 | "target!\n"); |
| 326 | return schedule_resp(SCpnt, NULL, done, |
| 327 | DID_NO_CONNECT << 16, 0); |
| 328 | } |
| 329 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 330 | if ((SCpnt->device->lun >= scsi_debug_max_luns) && |
| 331 | (SCpnt->device->lun != SAM2_WLUN_REPORT_LUNS)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | return schedule_resp(SCpnt, NULL, done, |
| 333 | DID_NO_CONNECT << 16, 0); |
| 334 | devip = devInfoReg(SCpnt->device); |
| 335 | if (NULL == devip) |
| 336 | return schedule_resp(SCpnt, NULL, done, |
| 337 | DID_NO_CONNECT << 16, 0); |
| 338 | |
| 339 | if ((scsi_debug_every_nth != 0) && |
| 340 | (++scsi_debug_cmnd_count >= abs(scsi_debug_every_nth))) { |
| 341 | scsi_debug_cmnd_count = 0; |
| 342 | if (scsi_debug_every_nth < -1) |
| 343 | scsi_debug_every_nth = -1; |
| 344 | if (SCSI_DEBUG_OPT_TIMEOUT & scsi_debug_opts) |
| 345 | return 0; /* ignore command causing timeout */ |
| 346 | else if (SCSI_DEBUG_OPT_RECOVERED_ERR & scsi_debug_opts) |
| 347 | inj_recovered = 1; /* to reads and writes below */ |
| 348 | } |
| 349 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 350 | if (devip->wlun) { |
| 351 | switch (*cmd) { |
| 352 | case INQUIRY: |
| 353 | case REQUEST_SENSE: |
| 354 | case TEST_UNIT_READY: |
| 355 | case REPORT_LUNS: |
| 356 | break; /* only allowable wlun commands */ |
| 357 | default: |
| 358 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 359 | printk(KERN_INFO "scsi_debug: Opcode: 0x%x " |
| 360 | "not supported for wlun\n", *cmd); |
| 361 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 362 | INVALID_OPCODE, 0); |
| 363 | errsts = check_condition_result; |
| 364 | return schedule_resp(SCpnt, devip, done, errsts, |
| 365 | 0); |
| 366 | } |
| 367 | } |
| 368 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | switch (*cmd) { |
| 370 | case INQUIRY: /* mandatory, ignore unit attention */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 371 | delay_override = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | errsts = resp_inquiry(SCpnt, target, devip); |
| 373 | break; |
| 374 | case REQUEST_SENSE: /* mandatory, ignore unit attention */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 375 | delay_override = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | errsts = resp_requests(SCpnt, devip); |
| 377 | break; |
| 378 | case REZERO_UNIT: /* actually this is REWIND for SSC */ |
| 379 | case START_STOP: |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 380 | errsts = resp_start_stop(SCpnt, devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | break; |
| 382 | case ALLOW_MEDIUM_REMOVAL: |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 383 | if ((errsts = check_readiness(SCpnt, 1, devip))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | break; |
| 385 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 386 | printk(KERN_INFO "scsi_debug: Medium removal %s\n", |
| 387 | cmd[4] ? "inhibited" : "enabled"); |
| 388 | break; |
| 389 | case SEND_DIAGNOSTIC: /* mandatory */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 390 | errsts = check_readiness(SCpnt, 1, devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | break; |
| 392 | case TEST_UNIT_READY: /* mandatory */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 393 | delay_override = 1; |
| 394 | errsts = check_readiness(SCpnt, 0, devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | break; |
| 396 | case RESERVE: |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 397 | errsts = check_readiness(SCpnt, 1, devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | break; |
| 399 | case RESERVE_10: |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 400 | errsts = check_readiness(SCpnt, 1, devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 401 | break; |
| 402 | case RELEASE: |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 403 | errsts = check_readiness(SCpnt, 1, devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | break; |
| 405 | case RELEASE_10: |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 406 | errsts = check_readiness(SCpnt, 1, devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | break; |
| 408 | case READ_CAPACITY: |
| 409 | errsts = resp_readcap(SCpnt, devip); |
| 410 | break; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 411 | case SERVICE_ACTION_IN: |
| 412 | if (SAI_READ_CAPACITY_16 != cmd[1]) { |
| 413 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 414 | INVALID_OPCODE, 0); |
| 415 | errsts = check_condition_result; |
| 416 | break; |
| 417 | } |
| 418 | errsts = resp_readcap16(SCpnt, devip); |
| 419 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | case READ_16: |
| 421 | case READ_12: |
| 422 | case READ_10: |
| 423 | case READ_6: |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 424 | if ((errsts = check_readiness(SCpnt, 0, devip))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | if ((*cmd) == READ_16) { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 427 | for (lba = 0, j = 0; j < 8; ++j) { |
| 428 | if (j > 0) |
| 429 | lba <<= 8; |
| 430 | lba += cmd[2 + j]; |
| 431 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | num = cmd[13] + (cmd[12] << 8) + |
| 433 | (cmd[11] << 16) + (cmd[10] << 24); |
| 434 | } else if ((*cmd) == READ_12) { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 435 | lba = cmd[5] + (cmd[4] << 8) + |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | (cmd[3] << 16) + (cmd[2] << 24); |
| 437 | num = cmd[9] + (cmd[8] << 8) + |
| 438 | (cmd[7] << 16) + (cmd[6] << 24); |
| 439 | } else if ((*cmd) == READ_10) { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 440 | lba = cmd[5] + (cmd[4] << 8) + |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | (cmd[3] << 16) + (cmd[2] << 24); |
| 442 | num = cmd[8] + (cmd[7] << 8); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 443 | } else { /* READ (6) */ |
| 444 | lba = cmd[3] + (cmd[2] << 8) + |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | ((cmd[1] & 0x1f) << 16); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 446 | num = (0 == cmd[4]) ? 256 : cmd[4]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 448 | errsts = resp_read(SCpnt, lba, num, devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | if (inj_recovered && (0 == errsts)) { |
| 450 | mk_sense_buffer(devip, RECOVERED_ERROR, |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 451 | THRESHOLD_EXCEEDED, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | errsts = check_condition_result; |
| 453 | } |
| 454 | break; |
| 455 | case REPORT_LUNS: /* mandatory, ignore unit attention */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 456 | delay_override = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | errsts = resp_report_luns(SCpnt, devip); |
| 458 | break; |
| 459 | case VERIFY: /* 10 byte SBC-2 command */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 460 | errsts = check_readiness(SCpnt, 0, devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | break; |
| 462 | case WRITE_16: |
| 463 | case WRITE_12: |
| 464 | case WRITE_10: |
| 465 | case WRITE_6: |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 466 | if ((errsts = check_readiness(SCpnt, 0, devip))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | if ((*cmd) == WRITE_16) { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 469 | for (lba = 0, j = 0; j < 8; ++j) { |
| 470 | if (j > 0) |
| 471 | lba <<= 8; |
| 472 | lba += cmd[2 + j]; |
| 473 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | num = cmd[13] + (cmd[12] << 8) + |
| 475 | (cmd[11] << 16) + (cmd[10] << 24); |
| 476 | } else if ((*cmd) == WRITE_12) { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 477 | lba = cmd[5] + (cmd[4] << 8) + |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | (cmd[3] << 16) + (cmd[2] << 24); |
| 479 | num = cmd[9] + (cmd[8] << 8) + |
| 480 | (cmd[7] << 16) + (cmd[6] << 24); |
| 481 | } else if ((*cmd) == WRITE_10) { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 482 | lba = cmd[5] + (cmd[4] << 8) + |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | (cmd[3] << 16) + (cmd[2] << 24); |
| 484 | num = cmd[8] + (cmd[7] << 8); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 485 | } else { /* WRITE (6) */ |
| 486 | lba = cmd[3] + (cmd[2] << 8) + |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | ((cmd[1] & 0x1f) << 16); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 488 | num = (0 == cmd[4]) ? 256 : cmd[4]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 489 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 490 | errsts = resp_write(SCpnt, lba, num, devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | if (inj_recovered && (0 == errsts)) { |
| 492 | mk_sense_buffer(devip, RECOVERED_ERROR, |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 493 | THRESHOLD_EXCEEDED, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | errsts = check_condition_result; |
| 495 | } |
| 496 | break; |
| 497 | case MODE_SENSE: |
| 498 | case MODE_SENSE_10: |
| 499 | errsts = resp_mode_sense(SCpnt, target, devip); |
| 500 | break; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 501 | case MODE_SELECT: |
| 502 | errsts = resp_mode_select(SCpnt, 1, devip); |
| 503 | break; |
| 504 | case MODE_SELECT_10: |
| 505 | errsts = resp_mode_select(SCpnt, 0, devip); |
| 506 | break; |
| 507 | case LOG_SENSE: |
| 508 | errsts = resp_log_sense(SCpnt, devip); |
| 509 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | case SYNCHRONIZE_CACHE: |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 511 | delay_override = 1; |
| 512 | errsts = check_readiness(SCpnt, 0, devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | break; |
| 514 | default: |
| 515 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 516 | printk(KERN_INFO "scsi_debug: Opcode: 0x%x not " |
| 517 | "supported\n", *cmd); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 518 | if ((errsts = check_readiness(SCpnt, 1, devip))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | break; /* Unit attention takes precedence */ |
| 520 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_OPCODE, 0); |
| 521 | errsts = check_condition_result; |
| 522 | break; |
| 523 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 524 | return schedule_resp(SCpnt, devip, done, errsts, |
| 525 | (delay_override ? 0 : scsi_debug_delay)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | } |
| 527 | |
| 528 | static int scsi_debug_ioctl(struct scsi_device *dev, int cmd, void __user *arg) |
| 529 | { |
| 530 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { |
| 531 | printk(KERN_INFO "scsi_debug: ioctl: cmd=0x%x\n", cmd); |
| 532 | } |
| 533 | return -EINVAL; |
| 534 | /* return -ENOTTY; // correct return but upsets fdisk */ |
| 535 | } |
| 536 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 537 | static int check_readiness(struct scsi_cmnd * SCpnt, int reset_only, |
| 538 | struct sdebug_dev_info * devip) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | { |
| 540 | if (devip->reset) { |
| 541 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 542 | printk(KERN_INFO "scsi_debug: Reporting Unit " |
| 543 | "attention: power on reset\n"); |
| 544 | devip->reset = 0; |
| 545 | mk_sense_buffer(devip, UNIT_ATTENTION, POWERON_RESET, 0); |
| 546 | return check_condition_result; |
| 547 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 548 | if ((0 == reset_only) && devip->stopped) { |
| 549 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 550 | printk(KERN_INFO "scsi_debug: Reporting Not " |
| 551 | "ready: initializing command required\n"); |
| 552 | mk_sense_buffer(devip, NOT_READY, LOGICAL_UNIT_NOT_READY, |
| 553 | 0x2); |
| 554 | return check_condition_result; |
| 555 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | return 0; |
| 557 | } |
| 558 | |
| 559 | /* Returns 0 if ok else (DID_ERROR << 16). Sets scp->resid . */ |
| 560 | static int fill_from_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr, |
| 561 | int arr_len) |
| 562 | { |
| 563 | int k, req_len, act_len, len, active; |
| 564 | void * kaddr; |
| 565 | void * kaddr_off; |
| 566 | struct scatterlist * sgpnt; |
| 567 | |
| 568 | if (0 == scp->request_bufflen) |
| 569 | return 0; |
| 570 | if (NULL == scp->request_buffer) |
| 571 | return (DID_ERROR << 16); |
| 572 | if (! ((scp->sc_data_direction == DMA_BIDIRECTIONAL) || |
| 573 | (scp->sc_data_direction == DMA_FROM_DEVICE))) |
| 574 | return (DID_ERROR << 16); |
| 575 | if (0 == scp->use_sg) { |
| 576 | req_len = scp->request_bufflen; |
| 577 | act_len = (req_len < arr_len) ? req_len : arr_len; |
| 578 | memcpy(scp->request_buffer, arr, act_len); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 579 | if (scp->resid) |
| 580 | scp->resid -= act_len; |
| 581 | else |
| 582 | scp->resid = req_len - act_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | return 0; |
| 584 | } |
| 585 | sgpnt = (struct scatterlist *)scp->request_buffer; |
| 586 | active = 1; |
| 587 | for (k = 0, req_len = 0, act_len = 0; k < scp->use_sg; ++k, ++sgpnt) { |
| 588 | if (active) { |
| 589 | kaddr = (unsigned char *) |
| 590 | kmap_atomic(sgpnt->page, KM_USER0); |
| 591 | if (NULL == kaddr) |
| 592 | return (DID_ERROR << 16); |
| 593 | kaddr_off = (unsigned char *)kaddr + sgpnt->offset; |
| 594 | len = sgpnt->length; |
| 595 | if ((req_len + len) > arr_len) { |
| 596 | active = 0; |
| 597 | len = arr_len - req_len; |
| 598 | } |
| 599 | memcpy(kaddr_off, arr + req_len, len); |
| 600 | kunmap_atomic(kaddr, KM_USER0); |
| 601 | act_len += len; |
| 602 | } |
| 603 | req_len += sgpnt->length; |
| 604 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 605 | if (scp->resid) |
| 606 | scp->resid -= act_len; |
| 607 | else |
| 608 | scp->resid = req_len - act_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 609 | return 0; |
| 610 | } |
| 611 | |
| 612 | /* Returns number of bytes fetched into 'arr' or -1 if error. */ |
| 613 | static int fetch_to_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr, |
| 614 | int max_arr_len) |
| 615 | { |
| 616 | int k, req_len, len, fin; |
| 617 | void * kaddr; |
| 618 | void * kaddr_off; |
| 619 | struct scatterlist * sgpnt; |
| 620 | |
| 621 | if (0 == scp->request_bufflen) |
| 622 | return 0; |
| 623 | if (NULL == scp->request_buffer) |
| 624 | return -1; |
| 625 | if (! ((scp->sc_data_direction == DMA_BIDIRECTIONAL) || |
| 626 | (scp->sc_data_direction == DMA_TO_DEVICE))) |
| 627 | return -1; |
| 628 | if (0 == scp->use_sg) { |
| 629 | req_len = scp->request_bufflen; |
| 630 | len = (req_len < max_arr_len) ? req_len : max_arr_len; |
| 631 | memcpy(arr, scp->request_buffer, len); |
| 632 | return len; |
| 633 | } |
| 634 | sgpnt = (struct scatterlist *)scp->request_buffer; |
| 635 | for (k = 0, req_len = 0, fin = 0; k < scp->use_sg; ++k, ++sgpnt) { |
| 636 | kaddr = (unsigned char *)kmap_atomic(sgpnt->page, KM_USER0); |
| 637 | if (NULL == kaddr) |
| 638 | return -1; |
| 639 | kaddr_off = (unsigned char *)kaddr + sgpnt->offset; |
| 640 | len = sgpnt->length; |
| 641 | if ((req_len + len) > max_arr_len) { |
| 642 | len = max_arr_len - req_len; |
| 643 | fin = 1; |
| 644 | } |
| 645 | memcpy(arr + req_len, kaddr_off, len); |
| 646 | kunmap_atomic(kaddr, KM_USER0); |
| 647 | if (fin) |
| 648 | return req_len + len; |
| 649 | req_len += sgpnt->length; |
| 650 | } |
| 651 | return req_len; |
| 652 | } |
| 653 | |
| 654 | |
| 655 | static const char * inq_vendor_id = "Linux "; |
| 656 | static const char * inq_product_id = "scsi_debug "; |
| 657 | static const char * inq_product_rev = "0004"; |
| 658 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 659 | static int inquiry_evpd_83(unsigned char * arr, int target_dev_id, |
| 660 | int dev_id_num, const char * dev_id_str, |
| 661 | int dev_id_str_len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 662 | { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 663 | int num, port_a; |
| 664 | char b[32]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 666 | port_a = target_dev_id + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | /* T10 vendor identifier field format (faked) */ |
| 668 | arr[0] = 0x2; /* ASCII */ |
| 669 | arr[1] = 0x1; |
| 670 | arr[2] = 0x0; |
| 671 | memcpy(&arr[4], inq_vendor_id, 8); |
| 672 | memcpy(&arr[12], inq_product_id, 16); |
| 673 | memcpy(&arr[28], dev_id_str, dev_id_str_len); |
| 674 | num = 8 + 16 + dev_id_str_len; |
| 675 | arr[3] = num; |
| 676 | num += 4; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 677 | if (dev_id_num >= 0) { |
| 678 | /* NAA-5, Logical unit identifier (binary) */ |
| 679 | arr[num++] = 0x1; /* binary (not necessarily sas) */ |
| 680 | arr[num++] = 0x3; /* PIV=0, lu, naa */ |
| 681 | arr[num++] = 0x0; |
| 682 | arr[num++] = 0x8; |
| 683 | arr[num++] = 0x53; /* naa-5 ieee company id=0x333333 (fake) */ |
| 684 | arr[num++] = 0x33; |
| 685 | arr[num++] = 0x33; |
| 686 | arr[num++] = 0x30; |
| 687 | arr[num++] = (dev_id_num >> 24); |
| 688 | arr[num++] = (dev_id_num >> 16) & 0xff; |
| 689 | arr[num++] = (dev_id_num >> 8) & 0xff; |
| 690 | arr[num++] = dev_id_num & 0xff; |
| 691 | /* Target relative port number */ |
| 692 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 693 | arr[num++] = 0x94; /* PIV=1, target port, rel port */ |
| 694 | arr[num++] = 0x0; /* reserved */ |
| 695 | arr[num++] = 0x4; /* length */ |
| 696 | arr[num++] = 0x0; /* reserved */ |
| 697 | arr[num++] = 0x0; /* reserved */ |
| 698 | arr[num++] = 0x0; |
| 699 | arr[num++] = 0x1; /* relative port A */ |
| 700 | } |
| 701 | /* NAA-5, Target port identifier */ |
| 702 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 703 | arr[num++] = 0x93; /* piv=1, target port, naa */ |
| 704 | arr[num++] = 0x0; |
| 705 | arr[num++] = 0x8; |
| 706 | arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ |
| 707 | arr[num++] = 0x22; |
| 708 | arr[num++] = 0x22; |
| 709 | arr[num++] = 0x20; |
| 710 | arr[num++] = (port_a >> 24); |
| 711 | arr[num++] = (port_a >> 16) & 0xff; |
| 712 | arr[num++] = (port_a >> 8) & 0xff; |
| 713 | arr[num++] = port_a & 0xff; |
| 714 | /* NAA-5, Target device identifier */ |
| 715 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 716 | arr[num++] = 0xa3; /* piv=1, target device, naa */ |
| 717 | arr[num++] = 0x0; |
| 718 | arr[num++] = 0x8; |
| 719 | arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ |
| 720 | arr[num++] = 0x22; |
| 721 | arr[num++] = 0x22; |
| 722 | arr[num++] = 0x20; |
| 723 | arr[num++] = (target_dev_id >> 24); |
| 724 | arr[num++] = (target_dev_id >> 16) & 0xff; |
| 725 | arr[num++] = (target_dev_id >> 8) & 0xff; |
| 726 | arr[num++] = target_dev_id & 0xff; |
| 727 | /* SCSI name string: Target device identifier */ |
| 728 | arr[num++] = 0x63; /* proto=sas, UTF-8 */ |
| 729 | arr[num++] = 0xa8; /* piv=1, target device, SCSI name string */ |
| 730 | arr[num++] = 0x0; |
| 731 | arr[num++] = 24; |
| 732 | memcpy(arr + num, "naa.52222220", 12); |
| 733 | num += 12; |
| 734 | snprintf(b, sizeof(b), "%08X", target_dev_id); |
| 735 | memcpy(arr + num, b, 8); |
| 736 | num += 8; |
| 737 | memset(arr + num, 0, 4); |
| 738 | num += 4; |
| 739 | return num; |
| 740 | } |
| 741 | |
| 742 | |
| 743 | static unsigned char vpd84_data[] = { |
| 744 | /* from 4th byte */ 0x22,0x22,0x22,0x0,0xbb,0x0, |
| 745 | 0x22,0x22,0x22,0x0,0xbb,0x1, |
| 746 | 0x22,0x22,0x22,0x0,0xbb,0x2, |
| 747 | }; |
| 748 | |
| 749 | static int inquiry_evpd_84(unsigned char * arr) |
| 750 | { |
| 751 | memcpy(arr, vpd84_data, sizeof(vpd84_data)); |
| 752 | return sizeof(vpd84_data); |
| 753 | } |
| 754 | |
| 755 | static int inquiry_evpd_85(unsigned char * arr) |
| 756 | { |
| 757 | int num = 0; |
| 758 | const char * na1 = "https://www.kernel.org/config"; |
| 759 | const char * na2 = "http://www.kernel.org/log"; |
| 760 | int plen, olen; |
| 761 | |
| 762 | arr[num++] = 0x1; /* lu, storage config */ |
| 763 | arr[num++] = 0x0; /* reserved */ |
| 764 | arr[num++] = 0x0; |
| 765 | olen = strlen(na1); |
| 766 | plen = olen + 1; |
| 767 | if (plen % 4) |
| 768 | plen = ((plen / 4) + 1) * 4; |
| 769 | arr[num++] = plen; /* length, null termianted, padded */ |
| 770 | memcpy(arr + num, na1, olen); |
| 771 | memset(arr + num + olen, 0, plen - olen); |
| 772 | num += plen; |
| 773 | |
| 774 | arr[num++] = 0x4; /* lu, logging */ |
| 775 | arr[num++] = 0x0; /* reserved */ |
| 776 | arr[num++] = 0x0; |
| 777 | olen = strlen(na2); |
| 778 | plen = olen + 1; |
| 779 | if (plen % 4) |
| 780 | plen = ((plen / 4) + 1) * 4; |
| 781 | arr[num++] = plen; /* length, null terminated, padded */ |
| 782 | memcpy(arr + num, na2, olen); |
| 783 | memset(arr + num + olen, 0, plen - olen); |
| 784 | num += plen; |
| 785 | |
| 786 | return num; |
| 787 | } |
| 788 | |
| 789 | /* SCSI ports VPD page */ |
| 790 | static int inquiry_evpd_88(unsigned char * arr, int target_dev_id) |
| 791 | { |
| 792 | int num = 0; |
| 793 | int port_a, port_b; |
| 794 | |
| 795 | port_a = target_dev_id + 1; |
| 796 | port_b = port_a + 1; |
| 797 | arr[num++] = 0x0; /* reserved */ |
| 798 | arr[num++] = 0x0; /* reserved */ |
| 799 | arr[num++] = 0x0; |
| 800 | arr[num++] = 0x1; /* relative port 1 (primary) */ |
| 801 | memset(arr + num, 0, 6); |
| 802 | num += 6; |
| 803 | arr[num++] = 0x0; |
| 804 | arr[num++] = 12; /* length tp descriptor */ |
| 805 | /* naa-5 target port identifier (A) */ |
| 806 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 807 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ |
| 808 | arr[num++] = 0x0; /* reserved */ |
| 809 | arr[num++] = 0x8; /* length */ |
| 810 | arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ |
| 811 | arr[num++] = 0x22; |
| 812 | arr[num++] = 0x22; |
| 813 | arr[num++] = 0x20; |
| 814 | arr[num++] = (port_a >> 24); |
| 815 | arr[num++] = (port_a >> 16) & 0xff; |
| 816 | arr[num++] = (port_a >> 8) & 0xff; |
| 817 | arr[num++] = port_a & 0xff; |
| 818 | |
| 819 | arr[num++] = 0x0; /* reserved */ |
| 820 | arr[num++] = 0x0; /* reserved */ |
| 821 | arr[num++] = 0x0; |
| 822 | arr[num++] = 0x2; /* relative port 2 (secondary) */ |
| 823 | memset(arr + num, 0, 6); |
| 824 | num += 6; |
| 825 | arr[num++] = 0x0; |
| 826 | arr[num++] = 12; /* length tp descriptor */ |
| 827 | /* naa-5 target port identifier (B) */ |
| 828 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 829 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ |
| 830 | arr[num++] = 0x0; /* reserved */ |
| 831 | arr[num++] = 0x8; /* length */ |
| 832 | arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ |
| 833 | arr[num++] = 0x22; |
| 834 | arr[num++] = 0x22; |
| 835 | arr[num++] = 0x20; |
| 836 | arr[num++] = (port_b >> 24); |
| 837 | arr[num++] = (port_b >> 16) & 0xff; |
| 838 | arr[num++] = (port_b >> 8) & 0xff; |
| 839 | arr[num++] = port_b & 0xff; |
| 840 | |
| 841 | return num; |
| 842 | } |
| 843 | |
| 844 | |
| 845 | static unsigned char vpd89_data[] = { |
| 846 | /* from 4th byte */ 0,0,0,0, |
| 847 | 'l','i','n','u','x',' ',' ',' ', |
| 848 | 'S','A','T',' ','s','c','s','i','_','d','e','b','u','g',' ',' ', |
| 849 | '1','2','3','4', |
| 850 | 0x34,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0, |
| 851 | 0xec,0,0,0, |
| 852 | 0x5a,0xc,0xff,0x3f,0x37,0xc8,0x10,0,0,0,0,0,0x3f,0,0,0, |
| 853 | 0,0,0,0,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x20,0x20,0x20,0x20, |
| 854 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0,0,0,0x40,0x4,0,0x2e,0x33, |
| 855 | 0x38,0x31,0x20,0x20,0x20,0x20,0x54,0x53,0x38,0x33,0x30,0x30,0x33,0x31, |
| 856 | 0x53,0x41, |
| 857 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, |
| 858 | 0x20,0x20, |
| 859 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, |
| 860 | 0x10,0x80, |
| 861 | 0,0,0,0x2f,0,0,0,0x2,0,0x2,0x7,0,0xff,0xff,0x1,0, |
| 862 | 0x3f,0,0xc1,0xff,0x3e,0,0x10,0x1,0xb0,0xf8,0x50,0x9,0,0,0x7,0, |
| 863 | 0x3,0,0x78,0,0x78,0,0xf0,0,0x78,0,0,0,0,0,0,0, |
| 864 | 0,0,0,0,0,0,0,0,0x2,0,0,0,0,0,0,0, |
| 865 | 0x7e,0,0x1b,0,0x6b,0x34,0x1,0x7d,0x3,0x40,0x69,0x34,0x1,0x3c,0x3,0x40, |
| 866 | 0x7f,0x40,0,0,0,0,0xfe,0xfe,0,0,0,0,0,0xfe,0,0, |
| 867 | 0,0,0,0,0,0,0,0,0xb0,0xf8,0x50,0x9,0,0,0,0, |
| 868 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 869 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 870 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 871 | 0x1,0,0xb0,0xf8,0x50,0x9,0xb0,0xf8,0x50,0x9,0x20,0x20,0x2,0,0xb6,0x42, |
| 872 | 0,0x80,0x8a,0,0x6,0x3c,0xa,0x3c,0xff,0xff,0xc6,0x7,0,0x1,0,0x8, |
| 873 | 0xf0,0xf,0,0x10,0x2,0,0x30,0,0,0,0,0,0,0,0x6,0xfe, |
| 874 | 0,0,0x2,0,0x50,0,0x8a,0,0x4f,0x95,0,0,0x21,0,0xb,0, |
| 875 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 876 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 877 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 878 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 879 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 880 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 881 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 882 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 883 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 884 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 885 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 886 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0xa5,0x51, |
| 887 | }; |
| 888 | |
| 889 | static int inquiry_evpd_89(unsigned char * arr) |
| 890 | { |
| 891 | memcpy(arr, vpd89_data, sizeof(vpd89_data)); |
| 892 | return sizeof(vpd89_data); |
| 893 | } |
| 894 | |
| 895 | |
| 896 | static unsigned char vpdb0_data[] = { |
| 897 | /* from 4th byte */ 0,0,0,4, |
| 898 | 0,0,0x4,0, |
| 899 | 0,0,0,64, |
| 900 | }; |
| 901 | |
| 902 | static int inquiry_evpd_b0(unsigned char * arr) |
| 903 | { |
| 904 | memcpy(arr, vpdb0_data, sizeof(vpdb0_data)); |
| 905 | if (sdebug_store_sectors > 0x400) { |
| 906 | arr[4] = (sdebug_store_sectors >> 24) & 0xff; |
| 907 | arr[5] = (sdebug_store_sectors >> 16) & 0xff; |
| 908 | arr[6] = (sdebug_store_sectors >> 8) & 0xff; |
| 909 | arr[7] = sdebug_store_sectors & 0xff; |
| 910 | } |
| 911 | return sizeof(vpdb0_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 912 | } |
| 913 | |
| 914 | |
| 915 | #define SDEBUG_LONG_INQ_SZ 96 |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 916 | #define SDEBUG_MAX_INQ_ARR_SZ 584 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | |
| 918 | static int resp_inquiry(struct scsi_cmnd * scp, int target, |
| 919 | struct sdebug_dev_info * devip) |
| 920 | { |
| 921 | unsigned char pq_pdt; |
| 922 | unsigned char arr[SDEBUG_MAX_INQ_ARR_SZ]; |
| 923 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 924 | int alloc_len, n; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 925 | |
| 926 | alloc_len = (cmd[3] << 8) + cmd[4]; |
| 927 | memset(arr, 0, SDEBUG_MAX_INQ_ARR_SZ); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 928 | if (devip->wlun) |
| 929 | pq_pdt = 0x1e; /* present, wlun */ |
| 930 | else if (scsi_debug_no_lun_0 && (0 == devip->lun)) |
| 931 | pq_pdt = 0x7f; /* not present, no device type */ |
| 932 | else |
| 933 | pq_pdt = (scsi_debug_ptype & 0x1f); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 934 | arr[0] = pq_pdt; |
| 935 | if (0x2 & cmd[1]) { /* CMDDT bit set */ |
| 936 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 937 | 0); |
| 938 | return check_condition_result; |
| 939 | } else if (0x1 & cmd[1]) { /* EVPD bit set */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 940 | int lu_id_num, target_dev_id, len; |
| 941 | char lu_id_str[6]; |
| 942 | int host_no = devip->sdbg_host->shost->host_no; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 943 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 944 | lu_id_num = devip->wlun ? -1 : (((host_no + 1) * 2000) + |
| 945 | (devip->target * 1000) + devip->lun); |
| 946 | target_dev_id = ((host_no + 1) * 2000) + |
| 947 | (devip->target * 1000) - 3; |
| 948 | len = scnprintf(lu_id_str, 6, "%d", lu_id_num); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 949 | if (0 == cmd[2]) { /* supported vital product data pages */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 950 | arr[1] = cmd[2]; /*sanity */ |
| 951 | n = 4; |
| 952 | arr[n++] = 0x0; /* this page */ |
| 953 | arr[n++] = 0x80; /* unit serial number */ |
| 954 | arr[n++] = 0x83; /* device identification */ |
| 955 | arr[n++] = 0x84; /* software interface ident. */ |
| 956 | arr[n++] = 0x85; /* management network addresses */ |
| 957 | arr[n++] = 0x86; /* extended inquiry */ |
| 958 | arr[n++] = 0x87; /* mode page policy */ |
| 959 | arr[n++] = 0x88; /* SCSI ports */ |
| 960 | arr[n++] = 0x89; /* ATA information */ |
| 961 | arr[n++] = 0xb0; /* Block limits (SBC) */ |
| 962 | arr[3] = n - 4; /* number of supported VPD pages */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | } else if (0x80 == cmd[2]) { /* unit serial number */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 964 | arr[1] = cmd[2]; /*sanity */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 965 | arr[3] = len; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 966 | memcpy(&arr[4], lu_id_str, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 967 | } else if (0x83 == cmd[2]) { /* device identification */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 968 | arr[1] = cmd[2]; /*sanity */ |
| 969 | arr[3] = inquiry_evpd_83(&arr[4], target_dev_id, |
| 970 | lu_id_num, lu_id_str, len); |
| 971 | } else if (0x84 == cmd[2]) { /* Software interface ident. */ |
| 972 | arr[1] = cmd[2]; /*sanity */ |
| 973 | arr[3] = inquiry_evpd_84(&arr[4]); |
| 974 | } else if (0x85 == cmd[2]) { /* Management network addresses */ |
| 975 | arr[1] = cmd[2]; /*sanity */ |
| 976 | arr[3] = inquiry_evpd_85(&arr[4]); |
| 977 | } else if (0x86 == cmd[2]) { /* extended inquiry */ |
| 978 | arr[1] = cmd[2]; /*sanity */ |
| 979 | arr[3] = 0x3c; /* number of following entries */ |
| 980 | arr[4] = 0x0; /* no protection stuff */ |
| 981 | arr[5] = 0x7; /* head of q, ordered + simple q's */ |
| 982 | } else if (0x87 == cmd[2]) { /* mode page policy */ |
| 983 | arr[1] = cmd[2]; /*sanity */ |
| 984 | arr[3] = 0x8; /* number of following entries */ |
| 985 | arr[4] = 0x2; /* disconnect-reconnect mp */ |
| 986 | arr[6] = 0x80; /* mlus, shared */ |
| 987 | arr[8] = 0x18; /* protocol specific lu */ |
| 988 | arr[10] = 0x82; /* mlus, per initiator port */ |
| 989 | } else if (0x88 == cmd[2]) { /* SCSI Ports */ |
| 990 | arr[1] = cmd[2]; /*sanity */ |
| 991 | arr[3] = inquiry_evpd_88(&arr[4], target_dev_id); |
| 992 | } else if (0x89 == cmd[2]) { /* ATA information */ |
| 993 | arr[1] = cmd[2]; /*sanity */ |
| 994 | n = inquiry_evpd_89(&arr[4]); |
| 995 | arr[2] = (n >> 8); |
| 996 | arr[3] = (n & 0xff); |
| 997 | } else if (0xb0 == cmd[2]) { /* Block limits (SBC) */ |
| 998 | arr[1] = cmd[2]; /*sanity */ |
| 999 | arr[3] = inquiry_evpd_b0(&arr[4]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1000 | } else { |
| 1001 | /* Illegal request, invalid field in cdb */ |
| 1002 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1003 | INVALID_FIELD_IN_CDB, 0); |
| 1004 | return check_condition_result; |
| 1005 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1006 | len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1007 | return fill_from_dev_buffer(scp, arr, |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1008 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1009 | } |
| 1010 | /* drops through here for a standard inquiry */ |
| 1011 | arr[1] = DEV_REMOVEABLE(target) ? 0x80 : 0; /* Removable disk */ |
| 1012 | arr[2] = scsi_debug_scsi_level; |
| 1013 | arr[3] = 2; /* response_data_format==2 */ |
| 1014 | arr[4] = SDEBUG_LONG_INQ_SZ - 5; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1015 | arr[6] = 0x10; /* claim: MultiP */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1016 | /* arr[6] |= 0x40; ... claim: EncServ (enclosure services) */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1017 | arr[7] = 0xa; /* claim: LINKED + CMDQUE */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1018 | memcpy(&arr[8], inq_vendor_id, 8); |
| 1019 | memcpy(&arr[16], inq_product_id, 16); |
| 1020 | memcpy(&arr[32], inq_product_rev, 4); |
| 1021 | /* version descriptors (2 bytes each) follow */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1022 | arr[58] = 0x0; arr[59] = 0x77; /* SAM-3 ANSI */ |
| 1023 | arr[60] = 0x3; arr[61] = 0x14; /* SPC-3 ANSI */ |
| 1024 | n = 62; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1025 | if (scsi_debug_ptype == 0) { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1026 | arr[n++] = 0x3; arr[n++] = 0x3d; /* SBC-2 ANSI */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1027 | } else if (scsi_debug_ptype == 1) { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1028 | arr[n++] = 0x3; arr[n++] = 0x60; /* SSC-2 no version */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1029 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1030 | arr[n++] = 0xc; arr[n++] = 0xf; /* SAS-1.1 rev 10 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1031 | return fill_from_dev_buffer(scp, arr, |
| 1032 | min(alloc_len, SDEBUG_LONG_INQ_SZ)); |
| 1033 | } |
| 1034 | |
| 1035 | static int resp_requests(struct scsi_cmnd * scp, |
| 1036 | struct sdebug_dev_info * devip) |
| 1037 | { |
| 1038 | unsigned char * sbuff; |
| 1039 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 1040 | unsigned char arr[SDEBUG_SENSE_LEN]; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1041 | int want_dsense; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1042 | int len = 18; |
| 1043 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1044 | memset(arr, 0, sizeof(arr)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1045 | if (devip->reset == 1) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1046 | mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0); |
| 1047 | want_dsense = !!(cmd[1] & 1) || scsi_debug_dsense; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1048 | sbuff = devip->sense_buff; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1049 | if ((iec_m_pg[2] & 0x4) && (6 == (iec_m_pg[3] & 0xf))) { |
| 1050 | if (want_dsense) { |
| 1051 | arr[0] = 0x72; |
| 1052 | arr[1] = 0x0; /* NO_SENSE in sense_key */ |
| 1053 | arr[2] = THRESHOLD_EXCEEDED; |
| 1054 | arr[3] = 0xff; /* TEST set and MRIE==6 */ |
| 1055 | } else { |
| 1056 | arr[0] = 0x70; |
| 1057 | arr[2] = 0x0; /* NO_SENSE in sense_key */ |
| 1058 | arr[7] = 0xa; /* 18 byte sense buffer */ |
| 1059 | arr[12] = THRESHOLD_EXCEEDED; |
| 1060 | arr[13] = 0xff; /* TEST set and MRIE==6 */ |
| 1061 | } |
| 1062 | } else if (devip->stopped) { |
| 1063 | if (want_dsense) { |
| 1064 | arr[0] = 0x72; |
| 1065 | arr[1] = 0x0; /* NO_SENSE in sense_key */ |
| 1066 | arr[2] = LOW_POWER_COND_ON; |
| 1067 | arr[3] = 0x0; /* TEST set and MRIE==6 */ |
| 1068 | } else { |
| 1069 | arr[0] = 0x70; |
| 1070 | arr[2] = 0x0; /* NO_SENSE in sense_key */ |
| 1071 | arr[7] = 0xa; /* 18 byte sense buffer */ |
| 1072 | arr[12] = LOW_POWER_COND_ON; |
| 1073 | arr[13] = 0x0; /* TEST set and MRIE==6 */ |
| 1074 | } |
| 1075 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1076 | memcpy(arr, sbuff, SDEBUG_SENSE_LEN); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1077 | if ((cmd[1] & 1) && (! scsi_debug_dsense)) { |
| 1078 | /* DESC bit set and sense_buff in fixed format */ |
| 1079 | memset(arr, 0, sizeof(arr)); |
| 1080 | arr[0] = 0x72; |
| 1081 | arr[1] = sbuff[2]; /* sense key */ |
| 1082 | arr[2] = sbuff[12]; /* asc */ |
| 1083 | arr[3] = sbuff[13]; /* ascq */ |
| 1084 | len = 8; |
| 1085 | } |
| 1086 | } |
| 1087 | mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1088 | return fill_from_dev_buffer(scp, arr, len); |
| 1089 | } |
| 1090 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1091 | static int resp_start_stop(struct scsi_cmnd * scp, |
| 1092 | struct sdebug_dev_info * devip) |
| 1093 | { |
| 1094 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 1095 | int power_cond, errsts, start; |
| 1096 | |
| 1097 | if ((errsts = check_readiness(scp, 1, devip))) |
| 1098 | return errsts; |
| 1099 | power_cond = (cmd[4] & 0xf0) >> 4; |
| 1100 | if (power_cond) { |
| 1101 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 1102 | 0); |
| 1103 | return check_condition_result; |
| 1104 | } |
| 1105 | start = cmd[4] & 1; |
| 1106 | if (start == devip->stopped) |
| 1107 | devip->stopped = !start; |
| 1108 | return 0; |
| 1109 | } |
| 1110 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1111 | #define SDEBUG_READCAP_ARR_SZ 8 |
| 1112 | static int resp_readcap(struct scsi_cmnd * scp, |
| 1113 | struct sdebug_dev_info * devip) |
| 1114 | { |
| 1115 | unsigned char arr[SDEBUG_READCAP_ARR_SZ]; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1116 | unsigned int capac; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1117 | int errsts; |
| 1118 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1119 | if ((errsts = check_readiness(scp, 1, devip))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1120 | return errsts; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1121 | /* following just in case virtual_gb changed */ |
| 1122 | if (scsi_debug_virtual_gb > 0) { |
| 1123 | sdebug_capacity = 2048 * 1024; |
| 1124 | sdebug_capacity *= scsi_debug_virtual_gb; |
| 1125 | } else |
| 1126 | sdebug_capacity = sdebug_store_sectors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1127 | memset(arr, 0, SDEBUG_READCAP_ARR_SZ); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1128 | if (sdebug_capacity < 0xffffffff) { |
| 1129 | capac = (unsigned int)sdebug_capacity - 1; |
| 1130 | arr[0] = (capac >> 24); |
| 1131 | arr[1] = (capac >> 16) & 0xff; |
| 1132 | arr[2] = (capac >> 8) & 0xff; |
| 1133 | arr[3] = capac & 0xff; |
| 1134 | } else { |
| 1135 | arr[0] = 0xff; |
| 1136 | arr[1] = 0xff; |
| 1137 | arr[2] = 0xff; |
| 1138 | arr[3] = 0xff; |
| 1139 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1140 | arr[6] = (SECT_SIZE_PER(target) >> 8) & 0xff; |
| 1141 | arr[7] = SECT_SIZE_PER(target) & 0xff; |
| 1142 | return fill_from_dev_buffer(scp, arr, SDEBUG_READCAP_ARR_SZ); |
| 1143 | } |
| 1144 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1145 | #define SDEBUG_READCAP16_ARR_SZ 32 |
| 1146 | static int resp_readcap16(struct scsi_cmnd * scp, |
| 1147 | struct sdebug_dev_info * devip) |
| 1148 | { |
| 1149 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 1150 | unsigned char arr[SDEBUG_READCAP16_ARR_SZ]; |
| 1151 | unsigned long long capac; |
| 1152 | int errsts, k, alloc_len; |
| 1153 | |
| 1154 | if ((errsts = check_readiness(scp, 1, devip))) |
| 1155 | return errsts; |
| 1156 | alloc_len = ((cmd[10] << 24) + (cmd[11] << 16) + (cmd[12] << 8) |
| 1157 | + cmd[13]); |
| 1158 | /* following just in case virtual_gb changed */ |
| 1159 | if (scsi_debug_virtual_gb > 0) { |
| 1160 | sdebug_capacity = 2048 * 1024; |
| 1161 | sdebug_capacity *= scsi_debug_virtual_gb; |
| 1162 | } else |
| 1163 | sdebug_capacity = sdebug_store_sectors; |
| 1164 | memset(arr, 0, SDEBUG_READCAP16_ARR_SZ); |
| 1165 | capac = sdebug_capacity - 1; |
| 1166 | for (k = 0; k < 8; ++k, capac >>= 8) |
| 1167 | arr[7 - k] = capac & 0xff; |
| 1168 | arr[8] = (SECT_SIZE_PER(target) >> 24) & 0xff; |
| 1169 | arr[9] = (SECT_SIZE_PER(target) >> 16) & 0xff; |
| 1170 | arr[10] = (SECT_SIZE_PER(target) >> 8) & 0xff; |
| 1171 | arr[11] = SECT_SIZE_PER(target) & 0xff; |
| 1172 | return fill_from_dev_buffer(scp, arr, |
| 1173 | min(alloc_len, SDEBUG_READCAP16_ARR_SZ)); |
| 1174 | } |
| 1175 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1176 | /* <<Following mode page info copied from ST318451LW>> */ |
| 1177 | |
| 1178 | static int resp_err_recov_pg(unsigned char * p, int pcontrol, int target) |
| 1179 | { /* Read-Write Error Recovery page for mode_sense */ |
| 1180 | unsigned char err_recov_pg[] = {0x1, 0xa, 0xc0, 11, 240, 0, 0, 0, |
| 1181 | 5, 0, 0xff, 0xff}; |
| 1182 | |
| 1183 | memcpy(p, err_recov_pg, sizeof(err_recov_pg)); |
| 1184 | if (1 == pcontrol) |
| 1185 | memset(p + 2, 0, sizeof(err_recov_pg) - 2); |
| 1186 | return sizeof(err_recov_pg); |
| 1187 | } |
| 1188 | |
| 1189 | static int resp_disconnect_pg(unsigned char * p, int pcontrol, int target) |
| 1190 | { /* Disconnect-Reconnect page for mode_sense */ |
| 1191 | unsigned char disconnect_pg[] = {0x2, 0xe, 128, 128, 0, 10, 0, 0, |
| 1192 | 0, 0, 0, 0, 0, 0, 0, 0}; |
| 1193 | |
| 1194 | memcpy(p, disconnect_pg, sizeof(disconnect_pg)); |
| 1195 | if (1 == pcontrol) |
| 1196 | memset(p + 2, 0, sizeof(disconnect_pg) - 2); |
| 1197 | return sizeof(disconnect_pg); |
| 1198 | } |
| 1199 | |
| 1200 | static int resp_format_pg(unsigned char * p, int pcontrol, int target) |
| 1201 | { /* Format device page for mode_sense */ |
| 1202 | unsigned char format_pg[] = {0x3, 0x16, 0, 0, 0, 0, 0, 0, |
| 1203 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 1204 | 0, 0, 0, 0, 0x40, 0, 0, 0}; |
| 1205 | |
| 1206 | memcpy(p, format_pg, sizeof(format_pg)); |
| 1207 | p[10] = (sdebug_sectors_per >> 8) & 0xff; |
| 1208 | p[11] = sdebug_sectors_per & 0xff; |
| 1209 | p[12] = (SECT_SIZE >> 8) & 0xff; |
| 1210 | p[13] = SECT_SIZE & 0xff; |
| 1211 | if (DEV_REMOVEABLE(target)) |
| 1212 | p[20] |= 0x20; /* should agree with INQUIRY */ |
| 1213 | if (1 == pcontrol) |
| 1214 | memset(p + 2, 0, sizeof(format_pg) - 2); |
| 1215 | return sizeof(format_pg); |
| 1216 | } |
| 1217 | |
| 1218 | static int resp_caching_pg(unsigned char * p, int pcontrol, int target) |
| 1219 | { /* Caching page for mode_sense */ |
| 1220 | unsigned char caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0, |
| 1221 | 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, 0, 0, 0, 0}; |
| 1222 | |
| 1223 | memcpy(p, caching_pg, sizeof(caching_pg)); |
| 1224 | if (1 == pcontrol) |
| 1225 | memset(p + 2, 0, sizeof(caching_pg) - 2); |
| 1226 | return sizeof(caching_pg); |
| 1227 | } |
| 1228 | |
| 1229 | static int resp_ctrl_m_pg(unsigned char * p, int pcontrol, int target) |
| 1230 | { /* Control mode page for mode_sense */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1231 | unsigned char ch_ctrl_m_pg[] = {/* 0xa, 10, */ 0x6, 0, 0, 0, 0, 0, |
| 1232 | 0, 0, 0, 0}; |
| 1233 | 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] | 1234 | 0, 0, 0x2, 0x4b}; |
| 1235 | |
| 1236 | if (scsi_debug_dsense) |
| 1237 | ctrl_m_pg[2] |= 0x4; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1238 | else |
| 1239 | ctrl_m_pg[2] &= ~0x4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1240 | memcpy(p, ctrl_m_pg, sizeof(ctrl_m_pg)); |
| 1241 | if (1 == pcontrol) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1242 | memcpy(p + 2, ch_ctrl_m_pg, sizeof(ch_ctrl_m_pg)); |
| 1243 | else if (2 == pcontrol) |
| 1244 | memcpy(p, d_ctrl_m_pg, sizeof(d_ctrl_m_pg)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1245 | return sizeof(ctrl_m_pg); |
| 1246 | } |
| 1247 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1248 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1249 | static int resp_iec_m_pg(unsigned char * p, int pcontrol, int target) |
| 1250 | { /* Informational Exceptions control mode page for mode_sense */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1251 | unsigned char ch_iec_m_pg[] = {/* 0x1c, 0xa, */ 0x4, 0xf, 0, 0, 0, 0, |
| 1252 | 0, 0, 0x0, 0x0}; |
| 1253 | unsigned char d_iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, |
| 1254 | 0, 0, 0x0, 0x0}; |
| 1255 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1256 | memcpy(p, iec_m_pg, sizeof(iec_m_pg)); |
| 1257 | if (1 == pcontrol) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1258 | memcpy(p + 2, ch_iec_m_pg, sizeof(ch_iec_m_pg)); |
| 1259 | else if (2 == pcontrol) |
| 1260 | memcpy(p, d_iec_m_pg, sizeof(d_iec_m_pg)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1261 | return sizeof(iec_m_pg); |
| 1262 | } |
| 1263 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1264 | static int resp_sas_sf_m_pg(unsigned char * p, int pcontrol, int target) |
| 1265 | { /* SAS SSP mode page - short format for mode_sense */ |
| 1266 | unsigned char sas_sf_m_pg[] = {0x19, 0x6, |
| 1267 | 0x6, 0x0, 0x7, 0xd0, 0x0, 0x0}; |
| 1268 | |
| 1269 | memcpy(p, sas_sf_m_pg, sizeof(sas_sf_m_pg)); |
| 1270 | if (1 == pcontrol) |
| 1271 | memset(p + 2, 0, sizeof(sas_sf_m_pg) - 2); |
| 1272 | return sizeof(sas_sf_m_pg); |
| 1273 | } |
| 1274 | |
| 1275 | |
| 1276 | static int resp_sas_pcd_m_spg(unsigned char * p, int pcontrol, int target, |
| 1277 | int target_dev_id) |
| 1278 | { /* SAS phy control and discover mode page for mode_sense */ |
| 1279 | unsigned char sas_pcd_m_pg[] = {0x59, 0x1, 0, 0x64, 0, 0x6, 0, 2, |
| 1280 | 0, 0, 0, 0, 0x10, 0x9, 0x8, 0x0, |
| 1281 | 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, |
| 1282 | 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, |
| 1283 | 0x2, 0, 0, 0, 0, 0, 0, 0, |
| 1284 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, |
| 1285 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 1286 | 0, 1, 0, 0, 0x10, 0x9, 0x8, 0x0, |
| 1287 | 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, |
| 1288 | 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, |
| 1289 | 0x3, 0, 0, 0, 0, 0, 0, 0, |
| 1290 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, |
| 1291 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 1292 | }; |
| 1293 | int port_a, port_b; |
| 1294 | |
| 1295 | port_a = target_dev_id + 1; |
| 1296 | port_b = port_a + 1; |
| 1297 | memcpy(p, sas_pcd_m_pg, sizeof(sas_pcd_m_pg)); |
| 1298 | p[20] = (port_a >> 24); |
| 1299 | p[21] = (port_a >> 16) & 0xff; |
| 1300 | p[22] = (port_a >> 8) & 0xff; |
| 1301 | p[23] = port_a & 0xff; |
| 1302 | p[48 + 20] = (port_b >> 24); |
| 1303 | p[48 + 21] = (port_b >> 16) & 0xff; |
| 1304 | p[48 + 22] = (port_b >> 8) & 0xff; |
| 1305 | p[48 + 23] = port_b & 0xff; |
| 1306 | if (1 == pcontrol) |
| 1307 | memset(p + 4, 0, sizeof(sas_pcd_m_pg) - 4); |
| 1308 | return sizeof(sas_pcd_m_pg); |
| 1309 | } |
| 1310 | |
| 1311 | static int resp_sas_sha_m_spg(unsigned char * p, int pcontrol) |
| 1312 | { /* SAS SSP shared protocol specific port mode subpage */ |
| 1313 | unsigned char sas_sha_m_pg[] = {0x59, 0x2, 0, 0xc, 0, 0x6, 0x10, 0, |
| 1314 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 1315 | }; |
| 1316 | |
| 1317 | memcpy(p, sas_sha_m_pg, sizeof(sas_sha_m_pg)); |
| 1318 | if (1 == pcontrol) |
| 1319 | memset(p + 4, 0, sizeof(sas_sha_m_pg) - 4); |
| 1320 | return sizeof(sas_sha_m_pg); |
| 1321 | } |
| 1322 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1323 | #define SDEBUG_MAX_MSENSE_SZ 256 |
| 1324 | |
| 1325 | static int resp_mode_sense(struct scsi_cmnd * scp, int target, |
| 1326 | struct sdebug_dev_info * devip) |
| 1327 | { |
| 1328 | unsigned char dbd; |
| 1329 | int pcontrol, pcode, subpcode; |
| 1330 | unsigned char dev_spec; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1331 | int alloc_len, msense_6, offset, len, errsts, target_dev_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1332 | unsigned char * ap; |
| 1333 | unsigned char arr[SDEBUG_MAX_MSENSE_SZ]; |
| 1334 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 1335 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1336 | if ((errsts = check_readiness(scp, 1, devip))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1337 | return errsts; |
| 1338 | dbd = cmd[1] & 0x8; |
| 1339 | pcontrol = (cmd[2] & 0xc0) >> 6; |
| 1340 | pcode = cmd[2] & 0x3f; |
| 1341 | subpcode = cmd[3]; |
| 1342 | msense_6 = (MODE_SENSE == cmd[0]); |
| 1343 | alloc_len = msense_6 ? cmd[4] : ((cmd[7] << 8) | cmd[8]); |
| 1344 | memset(arr, 0, SDEBUG_MAX_MSENSE_SZ); |
| 1345 | if (0x3 == pcontrol) { /* Saving values not supported */ |
| 1346 | mk_sense_buffer(devip, ILLEGAL_REQUEST, SAVING_PARAMS_UNSUP, |
| 1347 | 0); |
| 1348 | return check_condition_result; |
| 1349 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1350 | target_dev_id = ((devip->sdbg_host->shost->host_no + 1) * 2000) + |
| 1351 | (devip->target * 1000) - 3; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1352 | dev_spec = DEV_READONLY(target) ? 0x80 : 0x0; |
| 1353 | if (msense_6) { |
| 1354 | arr[2] = dev_spec; |
| 1355 | offset = 4; |
| 1356 | } else { |
| 1357 | arr[3] = dev_spec; |
| 1358 | offset = 8; |
| 1359 | } |
| 1360 | ap = arr + offset; |
| 1361 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1362 | if ((subpcode > 0x0) && (subpcode < 0xff) && (0x19 != pcode)) { |
| 1363 | /* TODO: Control Extension page */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1364 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 1365 | 0); |
| 1366 | return check_condition_result; |
| 1367 | } |
| 1368 | switch (pcode) { |
| 1369 | case 0x1: /* Read-Write error recovery page, direct access */ |
| 1370 | len = resp_err_recov_pg(ap, pcontrol, target); |
| 1371 | offset += len; |
| 1372 | break; |
| 1373 | case 0x2: /* Disconnect-Reconnect page, all devices */ |
| 1374 | len = resp_disconnect_pg(ap, pcontrol, target); |
| 1375 | offset += len; |
| 1376 | break; |
| 1377 | case 0x3: /* Format device page, direct access */ |
| 1378 | len = resp_format_pg(ap, pcontrol, target); |
| 1379 | offset += len; |
| 1380 | break; |
| 1381 | case 0x8: /* Caching page, direct access */ |
| 1382 | len = resp_caching_pg(ap, pcontrol, target); |
| 1383 | offset += len; |
| 1384 | break; |
| 1385 | case 0xa: /* Control Mode page, all devices */ |
| 1386 | len = resp_ctrl_m_pg(ap, pcontrol, target); |
| 1387 | offset += len; |
| 1388 | break; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1389 | case 0x19: /* if spc==1 then sas phy, control+discover */ |
| 1390 | if ((subpcode > 0x2) && (subpcode < 0xff)) { |
| 1391 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1392 | INVALID_FIELD_IN_CDB, 0); |
| 1393 | return check_condition_result; |
| 1394 | } |
| 1395 | len = 0; |
| 1396 | if ((0x0 == subpcode) || (0xff == subpcode)) |
| 1397 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); |
| 1398 | if ((0x1 == subpcode) || (0xff == subpcode)) |
| 1399 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, target, |
| 1400 | target_dev_id); |
| 1401 | if ((0x2 == subpcode) || (0xff == subpcode)) |
| 1402 | len += resp_sas_sha_m_spg(ap + len, pcontrol); |
| 1403 | offset += len; |
| 1404 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1405 | case 0x1c: /* Informational Exceptions Mode page, all devices */ |
| 1406 | len = resp_iec_m_pg(ap, pcontrol, target); |
| 1407 | offset += len; |
| 1408 | break; |
| 1409 | case 0x3f: /* Read all Mode pages */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1410 | if ((0 == subpcode) || (0xff == subpcode)) { |
| 1411 | len = resp_err_recov_pg(ap, pcontrol, target); |
| 1412 | len += resp_disconnect_pg(ap + len, pcontrol, target); |
| 1413 | len += resp_format_pg(ap + len, pcontrol, target); |
| 1414 | len += resp_caching_pg(ap + len, pcontrol, target); |
| 1415 | len += resp_ctrl_m_pg(ap + len, pcontrol, target); |
| 1416 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); |
| 1417 | if (0xff == subpcode) { |
| 1418 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, |
| 1419 | target, target_dev_id); |
| 1420 | len += resp_sas_sha_m_spg(ap + len, pcontrol); |
| 1421 | } |
| 1422 | len += resp_iec_m_pg(ap + len, pcontrol, target); |
| 1423 | } else { |
| 1424 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1425 | INVALID_FIELD_IN_CDB, 0); |
| 1426 | return check_condition_result; |
| 1427 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1428 | offset += len; |
| 1429 | break; |
| 1430 | default: |
| 1431 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 1432 | 0); |
| 1433 | return check_condition_result; |
| 1434 | } |
| 1435 | if (msense_6) |
| 1436 | arr[0] = offset - 1; |
| 1437 | else { |
| 1438 | arr[0] = ((offset - 2) >> 8) & 0xff; |
| 1439 | arr[1] = (offset - 2) & 0xff; |
| 1440 | } |
| 1441 | return fill_from_dev_buffer(scp, arr, min(alloc_len, offset)); |
| 1442 | } |
| 1443 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1444 | #define SDEBUG_MAX_MSELECT_SZ 512 |
| 1445 | |
| 1446 | static int resp_mode_select(struct scsi_cmnd * scp, int mselect6, |
| 1447 | struct sdebug_dev_info * devip) |
| 1448 | { |
| 1449 | int pf, sp, ps, md_len, bd_len, off, spf, pg_len; |
| 1450 | int param_len, res, errsts, mpage; |
| 1451 | unsigned char arr[SDEBUG_MAX_MSELECT_SZ]; |
| 1452 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 1453 | |
| 1454 | if ((errsts = check_readiness(scp, 1, devip))) |
| 1455 | return errsts; |
| 1456 | memset(arr, 0, sizeof(arr)); |
| 1457 | pf = cmd[1] & 0x10; |
| 1458 | sp = cmd[1] & 0x1; |
| 1459 | param_len = mselect6 ? cmd[4] : ((cmd[7] << 8) + cmd[8]); |
| 1460 | if ((0 == pf) || sp || (param_len > SDEBUG_MAX_MSELECT_SZ)) { |
| 1461 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1462 | INVALID_FIELD_IN_CDB, 0); |
| 1463 | return check_condition_result; |
| 1464 | } |
| 1465 | res = fetch_to_dev_buffer(scp, arr, param_len); |
| 1466 | if (-1 == res) |
| 1467 | return (DID_ERROR << 16); |
| 1468 | else if ((res < param_len) && |
| 1469 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) |
| 1470 | printk(KERN_INFO "scsi_debug: mode_select: cdb indicated=%d, " |
| 1471 | " IO sent=%d bytes\n", param_len, res); |
| 1472 | md_len = mselect6 ? (arr[0] + 1) : ((arr[0] << 8) + arr[1] + 2); |
| 1473 | bd_len = mselect6 ? arr[3] : ((arr[6] << 8) + arr[7]); |
| 1474 | if ((md_len > 2) || (0 != bd_len)) { |
| 1475 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1476 | INVALID_FIELD_IN_PARAM_LIST, 0); |
| 1477 | return check_condition_result; |
| 1478 | } |
| 1479 | off = bd_len + (mselect6 ? 4 : 8); |
| 1480 | mpage = arr[off] & 0x3f; |
| 1481 | ps = !!(arr[off] & 0x80); |
| 1482 | if (ps) { |
| 1483 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1484 | INVALID_FIELD_IN_PARAM_LIST, 0); |
| 1485 | return check_condition_result; |
| 1486 | } |
| 1487 | spf = !!(arr[off] & 0x40); |
| 1488 | pg_len = spf ? ((arr[off + 2] << 8) + arr[off + 3] + 4) : |
| 1489 | (arr[off + 1] + 2); |
| 1490 | if ((pg_len + off) > param_len) { |
| 1491 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1492 | PARAMETER_LIST_LENGTH_ERR, 0); |
| 1493 | return check_condition_result; |
| 1494 | } |
| 1495 | switch (mpage) { |
| 1496 | case 0xa: /* Control Mode page */ |
| 1497 | if (ctrl_m_pg[1] == arr[off + 1]) { |
| 1498 | memcpy(ctrl_m_pg + 2, arr + off + 2, |
| 1499 | sizeof(ctrl_m_pg) - 2); |
| 1500 | scsi_debug_dsense = !!(ctrl_m_pg[2] & 0x4); |
| 1501 | return 0; |
| 1502 | } |
| 1503 | break; |
| 1504 | case 0x1c: /* Informational Exceptions Mode page */ |
| 1505 | if (iec_m_pg[1] == arr[off + 1]) { |
| 1506 | memcpy(iec_m_pg + 2, arr + off + 2, |
| 1507 | sizeof(iec_m_pg) - 2); |
| 1508 | return 0; |
| 1509 | } |
| 1510 | break; |
| 1511 | default: |
| 1512 | break; |
| 1513 | } |
| 1514 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1515 | INVALID_FIELD_IN_PARAM_LIST, 0); |
| 1516 | return check_condition_result; |
| 1517 | } |
| 1518 | |
| 1519 | static int resp_temp_l_pg(unsigned char * arr) |
| 1520 | { |
| 1521 | unsigned char temp_l_pg[] = {0x0, 0x0, 0x3, 0x2, 0x0, 38, |
| 1522 | 0x0, 0x1, 0x3, 0x2, 0x0, 65, |
| 1523 | }; |
| 1524 | |
| 1525 | memcpy(arr, temp_l_pg, sizeof(temp_l_pg)); |
| 1526 | return sizeof(temp_l_pg); |
| 1527 | } |
| 1528 | |
| 1529 | static int resp_ie_l_pg(unsigned char * arr) |
| 1530 | { |
| 1531 | unsigned char ie_l_pg[] = {0x0, 0x0, 0x3, 0x3, 0x0, 0x0, 38, |
| 1532 | }; |
| 1533 | |
| 1534 | memcpy(arr, ie_l_pg, sizeof(ie_l_pg)); |
| 1535 | if (iec_m_pg[2] & 0x4) { /* TEST bit set */ |
| 1536 | arr[4] = THRESHOLD_EXCEEDED; |
| 1537 | arr[5] = 0xff; |
| 1538 | } |
| 1539 | return sizeof(ie_l_pg); |
| 1540 | } |
| 1541 | |
| 1542 | #define SDEBUG_MAX_LSENSE_SZ 512 |
| 1543 | |
| 1544 | static int resp_log_sense(struct scsi_cmnd * scp, |
| 1545 | struct sdebug_dev_info * devip) |
| 1546 | { |
| 1547 | int ppc, sp, pcontrol, pcode, alloc_len, errsts, len, n; |
| 1548 | unsigned char arr[SDEBUG_MAX_LSENSE_SZ]; |
| 1549 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 1550 | |
| 1551 | if ((errsts = check_readiness(scp, 1, devip))) |
| 1552 | return errsts; |
| 1553 | memset(arr, 0, sizeof(arr)); |
| 1554 | ppc = cmd[1] & 0x2; |
| 1555 | sp = cmd[1] & 0x1; |
| 1556 | if (ppc || sp) { |
| 1557 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1558 | INVALID_FIELD_IN_CDB, 0); |
| 1559 | return check_condition_result; |
| 1560 | } |
| 1561 | pcontrol = (cmd[2] & 0xc0) >> 6; |
| 1562 | pcode = cmd[2] & 0x3f; |
| 1563 | alloc_len = (cmd[7] << 8) + cmd[8]; |
| 1564 | arr[0] = pcode; |
| 1565 | switch (pcode) { |
| 1566 | case 0x0: /* Supported log pages log page */ |
| 1567 | n = 4; |
| 1568 | arr[n++] = 0x0; /* this page */ |
| 1569 | arr[n++] = 0xd; /* Temperature */ |
| 1570 | arr[n++] = 0x2f; /* Informational exceptions */ |
| 1571 | arr[3] = n - 4; |
| 1572 | break; |
| 1573 | case 0xd: /* Temperature log page */ |
| 1574 | arr[3] = resp_temp_l_pg(arr + 4); |
| 1575 | break; |
| 1576 | case 0x2f: /* Informational exceptions log page */ |
| 1577 | arr[3] = resp_ie_l_pg(arr + 4); |
| 1578 | break; |
| 1579 | default: |
| 1580 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1581 | INVALID_FIELD_IN_CDB, 0); |
| 1582 | return check_condition_result; |
| 1583 | } |
| 1584 | len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); |
| 1585 | return fill_from_dev_buffer(scp, arr, |
| 1586 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); |
| 1587 | } |
| 1588 | |
| 1589 | static int resp_read(struct scsi_cmnd * SCpnt, unsigned long long lba, |
| 1590 | unsigned int num, struct sdebug_dev_info * devip) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1591 | { |
| 1592 | unsigned long iflags; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1593 | unsigned int block, from_bottom; |
| 1594 | unsigned long long u; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1595 | int ret; |
| 1596 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1597 | if (lba + num > sdebug_capacity) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1598 | mk_sense_buffer(devip, ILLEGAL_REQUEST, ADDR_OUT_OF_RANGE, |
| 1599 | 0); |
| 1600 | return check_condition_result; |
| 1601 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1602 | /* transfer length excessive (tie in to block limits VPD page) */ |
| 1603 | if (num > sdebug_store_sectors) { |
| 1604 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 1605 | 0); |
| 1606 | return check_condition_result; |
| 1607 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1608 | if ((SCSI_DEBUG_OPT_MEDIUM_ERR & scsi_debug_opts) && |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1609 | (lba <= OPT_MEDIUM_ERR_ADDR) && |
| 1610 | ((lba + num) > OPT_MEDIUM_ERR_ADDR)) { |
| 1611 | /* claim unrecoverable read error */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1612 | mk_sense_buffer(devip, MEDIUM_ERROR, UNRECOVERED_READ_ERR, |
| 1613 | 0); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1614 | /* set info field and valid bit for fixed descriptor */ |
| 1615 | if (0x70 == (devip->sense_buff[0] & 0x7f)) { |
| 1616 | devip->sense_buff[0] |= 0x80; /* Valid bit */ |
| 1617 | ret = OPT_MEDIUM_ERR_ADDR; |
| 1618 | devip->sense_buff[3] = (ret >> 24) & 0xff; |
| 1619 | devip->sense_buff[4] = (ret >> 16) & 0xff; |
| 1620 | devip->sense_buff[5] = (ret >> 8) & 0xff; |
| 1621 | devip->sense_buff[6] = ret & 0xff; |
| 1622 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1623 | return check_condition_result; |
| 1624 | } |
| 1625 | read_lock_irqsave(&atomic_rw, iflags); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1626 | if ((lba + num) <= sdebug_store_sectors) |
| 1627 | ret = fill_from_dev_buffer(SCpnt, |
| 1628 | fake_storep + (lba * SECT_SIZE), |
| 1629 | num * SECT_SIZE); |
| 1630 | else { |
| 1631 | /* modulo when one arg is 64 bits needs do_div() */ |
| 1632 | u = lba; |
| 1633 | block = do_div(u, sdebug_store_sectors); |
| 1634 | from_bottom = 0; |
| 1635 | if ((block + num) > sdebug_store_sectors) |
| 1636 | from_bottom = (block + num) - sdebug_store_sectors; |
| 1637 | ret = fill_from_dev_buffer(SCpnt, |
| 1638 | fake_storep + (block * SECT_SIZE), |
| 1639 | (num - from_bottom) * SECT_SIZE); |
| 1640 | if ((0 == ret) && (from_bottom > 0)) |
| 1641 | ret = fill_from_dev_buffer(SCpnt, fake_storep, |
| 1642 | from_bottom * SECT_SIZE); |
| 1643 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1644 | read_unlock_irqrestore(&atomic_rw, iflags); |
| 1645 | return ret; |
| 1646 | } |
| 1647 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1648 | static int resp_write(struct scsi_cmnd * SCpnt, unsigned long long lba, |
| 1649 | unsigned int num, struct sdebug_dev_info * devip) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1650 | { |
| 1651 | unsigned long iflags; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1652 | unsigned int block, to_bottom; |
| 1653 | unsigned long long u; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1654 | int res; |
| 1655 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1656 | if (lba + num > sdebug_capacity) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1657 | mk_sense_buffer(devip, ILLEGAL_REQUEST, ADDR_OUT_OF_RANGE, |
| 1658 | 0); |
| 1659 | return check_condition_result; |
| 1660 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1661 | /* transfer length excessive (tie in to block limits VPD page) */ |
| 1662 | if (num > sdebug_store_sectors) { |
| 1663 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 1664 | 0); |
| 1665 | return check_condition_result; |
| 1666 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1667 | |
| 1668 | write_lock_irqsave(&atomic_rw, iflags); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1669 | if ((lba + num) <= sdebug_store_sectors) |
| 1670 | res = fetch_to_dev_buffer(SCpnt, |
| 1671 | fake_storep + (lba * SECT_SIZE), |
| 1672 | num * SECT_SIZE); |
| 1673 | else { |
| 1674 | /* modulo when one arg is 64 bits needs do_div() */ |
| 1675 | u = lba; |
| 1676 | block = do_div(u, sdebug_store_sectors); |
| 1677 | to_bottom = 0; |
| 1678 | if ((block + num) > sdebug_store_sectors) |
| 1679 | to_bottom = (block + num) - sdebug_store_sectors; |
| 1680 | res = fetch_to_dev_buffer(SCpnt, |
| 1681 | fake_storep + (block * SECT_SIZE), |
| 1682 | (num - to_bottom) * SECT_SIZE); |
| 1683 | if ((0 == res) && (to_bottom > 0)) |
| 1684 | res = fetch_to_dev_buffer(SCpnt, fake_storep, |
| 1685 | to_bottom * SECT_SIZE); |
| 1686 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1687 | write_unlock_irqrestore(&atomic_rw, iflags); |
| 1688 | if (-1 == res) |
| 1689 | return (DID_ERROR << 16); |
| 1690 | else if ((res < (num * SECT_SIZE)) && |
| 1691 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1692 | printk(KERN_INFO "scsi_debug: write: cdb indicated=%u, " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1693 | " IO sent=%d bytes\n", num * SECT_SIZE, res); |
| 1694 | return 0; |
| 1695 | } |
| 1696 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1697 | #define SDEBUG_RLUN_ARR_SZ 256 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1698 | |
| 1699 | static int resp_report_luns(struct scsi_cmnd * scp, |
| 1700 | struct sdebug_dev_info * devip) |
| 1701 | { |
| 1702 | unsigned int alloc_len; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1703 | int lun_cnt, i, upper, num, n, wlun, lun; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1704 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 1705 | int select_report = (int)cmd[2]; |
| 1706 | struct scsi_lun *one_lun; |
| 1707 | unsigned char arr[SDEBUG_RLUN_ARR_SZ]; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1708 | unsigned char * max_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1709 | |
| 1710 | 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] | 1711 | if ((alloc_len < 4) || (select_report > 2)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1712 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 1713 | 0); |
| 1714 | return check_condition_result; |
| 1715 | } |
| 1716 | /* can produce response with up to 16k luns (lun 0 to lun 16383) */ |
| 1717 | memset(arr, 0, SDEBUG_RLUN_ARR_SZ); |
| 1718 | lun_cnt = scsi_debug_max_luns; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1719 | if (1 == select_report) |
| 1720 | lun_cnt = 0; |
| 1721 | else if (scsi_debug_no_lun_0 && (lun_cnt > 0)) |
| 1722 | --lun_cnt; |
| 1723 | wlun = (select_report > 0) ? 1 : 0; |
| 1724 | num = lun_cnt + wlun; |
| 1725 | arr[2] = ((sizeof(struct scsi_lun) * num) >> 8) & 0xff; |
| 1726 | arr[3] = (sizeof(struct scsi_lun) * num) & 0xff; |
| 1727 | n = min((int)((SDEBUG_RLUN_ARR_SZ - 8) / |
| 1728 | sizeof(struct scsi_lun)), num); |
| 1729 | if (n < num) { |
| 1730 | wlun = 0; |
| 1731 | lun_cnt = n; |
| 1732 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1733 | one_lun = (struct scsi_lun *) &arr[8]; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1734 | max_addr = arr + SDEBUG_RLUN_ARR_SZ; |
| 1735 | for (i = 0, lun = (scsi_debug_no_lun_0 ? 1 : 0); |
| 1736 | ((i < lun_cnt) && ((unsigned char *)(one_lun + i) < max_addr)); |
| 1737 | i++, lun++) { |
| 1738 | upper = (lun >> 8) & 0x3f; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1739 | if (upper) |
| 1740 | one_lun[i].scsi_lun[0] = |
| 1741 | (upper | (SAM2_LUN_ADDRESS_METHOD << 6)); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1742 | one_lun[i].scsi_lun[1] = lun & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1743 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1744 | if (wlun) { |
| 1745 | one_lun[i].scsi_lun[0] = (SAM2_WLUN_REPORT_LUNS >> 8) & 0xff; |
| 1746 | one_lun[i].scsi_lun[1] = SAM2_WLUN_REPORT_LUNS & 0xff; |
| 1747 | i++; |
| 1748 | } |
| 1749 | alloc_len = (unsigned char *)(one_lun + i) - arr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1750 | return fill_from_dev_buffer(scp, arr, |
| 1751 | min((int)alloc_len, SDEBUG_RLUN_ARR_SZ)); |
| 1752 | } |
| 1753 | |
| 1754 | /* When timer goes off this function is called. */ |
| 1755 | static void timer_intr_handler(unsigned long indx) |
| 1756 | { |
| 1757 | struct sdebug_queued_cmd * sqcp; |
| 1758 | unsigned long iflags; |
| 1759 | |
| 1760 | if (indx >= SCSI_DEBUG_CANQUEUE) { |
| 1761 | printk(KERN_ERR "scsi_debug:timer_intr_handler: indx too " |
| 1762 | "large\n"); |
| 1763 | return; |
| 1764 | } |
| 1765 | spin_lock_irqsave(&queued_arr_lock, iflags); |
| 1766 | sqcp = &queued_arr[(int)indx]; |
| 1767 | if (! sqcp->in_use) { |
| 1768 | printk(KERN_ERR "scsi_debug:timer_intr_handler: Unexpected " |
| 1769 | "interrupt\n"); |
| 1770 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 1771 | return; |
| 1772 | } |
| 1773 | sqcp->in_use = 0; |
| 1774 | if (sqcp->done_funct) { |
| 1775 | sqcp->a_cmnd->result = sqcp->scsi_result; |
| 1776 | sqcp->done_funct(sqcp->a_cmnd); /* callback to mid level */ |
| 1777 | } |
| 1778 | sqcp->done_funct = NULL; |
| 1779 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 1780 | } |
| 1781 | |
| 1782 | static int scsi_debug_slave_alloc(struct scsi_device * sdp) |
| 1783 | { |
| 1784 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1785 | printk(KERN_INFO "scsi_debug: slave_alloc <%u %u %u %u>\n", |
| 1786 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1787 | return 0; |
| 1788 | } |
| 1789 | |
| 1790 | static int scsi_debug_slave_configure(struct scsi_device * sdp) |
| 1791 | { |
| 1792 | struct sdebug_dev_info * devip; |
| 1793 | |
| 1794 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1795 | printk(KERN_INFO "scsi_debug: slave_configure <%u %u %u %u>\n", |
| 1796 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1797 | if (sdp->host->max_cmd_len != SCSI_DEBUG_MAX_CMD_LEN) |
| 1798 | sdp->host->max_cmd_len = SCSI_DEBUG_MAX_CMD_LEN; |
| 1799 | devip = devInfoReg(sdp); |
| 1800 | sdp->hostdata = devip; |
| 1801 | if (sdp->host->cmd_per_lun) |
| 1802 | scsi_adjust_queue_depth(sdp, SDEBUG_TAGGED_QUEUING, |
| 1803 | sdp->host->cmd_per_lun); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1804 | blk_queue_max_segment_size(sdp->request_queue, 256 * 1024); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1805 | return 0; |
| 1806 | } |
| 1807 | |
| 1808 | static void scsi_debug_slave_destroy(struct scsi_device * sdp) |
| 1809 | { |
| 1810 | struct sdebug_dev_info * devip = |
| 1811 | (struct sdebug_dev_info *)sdp->hostdata; |
| 1812 | |
| 1813 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1814 | printk(KERN_INFO "scsi_debug: slave_destroy <%u %u %u %u>\n", |
| 1815 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1816 | if (devip) { |
| 1817 | /* make this slot avaliable for re-use */ |
| 1818 | devip->used = 0; |
| 1819 | sdp->hostdata = NULL; |
| 1820 | } |
| 1821 | } |
| 1822 | |
| 1823 | static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev) |
| 1824 | { |
| 1825 | struct sdebug_host_info * sdbg_host; |
| 1826 | struct sdebug_dev_info * open_devip = NULL; |
| 1827 | struct sdebug_dev_info * devip = |
| 1828 | (struct sdebug_dev_info *)sdev->hostdata; |
| 1829 | |
| 1830 | if (devip) |
| 1831 | return devip; |
| 1832 | sdbg_host = *(struct sdebug_host_info **) sdev->host->hostdata; |
| 1833 | if(! sdbg_host) { |
| 1834 | printk(KERN_ERR "Host info NULL\n"); |
| 1835 | return NULL; |
| 1836 | } |
| 1837 | list_for_each_entry(devip, &sdbg_host->dev_info_list, dev_list) { |
| 1838 | if ((devip->used) && (devip->channel == sdev->channel) && |
| 1839 | (devip->target == sdev->id) && |
| 1840 | (devip->lun == sdev->lun)) |
| 1841 | return devip; |
| 1842 | else { |
| 1843 | if ((!devip->used) && (!open_devip)) |
| 1844 | open_devip = devip; |
| 1845 | } |
| 1846 | } |
| 1847 | if (NULL == open_devip) { /* try and make a new one */ |
Jes Sorensen | 24669f75 | 2006-01-16 10:31:18 -0500 | [diff] [blame] | 1848 | open_devip = kzalloc(sizeof(*open_devip),GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1849 | if (NULL == open_devip) { |
| 1850 | printk(KERN_ERR "%s: out of memory at line %d\n", |
| 1851 | __FUNCTION__, __LINE__); |
| 1852 | return NULL; |
| 1853 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1854 | open_devip->sdbg_host = sdbg_host; |
| 1855 | list_add_tail(&open_devip->dev_list, |
| 1856 | &sdbg_host->dev_info_list); |
| 1857 | } |
| 1858 | if (open_devip) { |
| 1859 | open_devip->channel = sdev->channel; |
| 1860 | open_devip->target = sdev->id; |
| 1861 | open_devip->lun = sdev->lun; |
| 1862 | open_devip->sdbg_host = sdbg_host; |
| 1863 | open_devip->reset = 1; |
| 1864 | open_devip->used = 1; |
| 1865 | memset(open_devip->sense_buff, 0, SDEBUG_SENSE_LEN); |
| 1866 | if (scsi_debug_dsense) |
| 1867 | open_devip->sense_buff[0] = 0x72; |
| 1868 | else { |
| 1869 | open_devip->sense_buff[0] = 0x70; |
| 1870 | open_devip->sense_buff[7] = 0xa; |
| 1871 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1872 | if (sdev->lun == SAM2_WLUN_REPORT_LUNS) |
| 1873 | open_devip->wlun = SAM2_WLUN_REPORT_LUNS & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1874 | return open_devip; |
| 1875 | } |
| 1876 | return NULL; |
| 1877 | } |
| 1878 | |
| 1879 | static void mk_sense_buffer(struct sdebug_dev_info * devip, int key, |
| 1880 | int asc, int asq) |
| 1881 | { |
| 1882 | unsigned char * sbuff; |
| 1883 | |
| 1884 | sbuff = devip->sense_buff; |
| 1885 | memset(sbuff, 0, SDEBUG_SENSE_LEN); |
| 1886 | if (scsi_debug_dsense) { |
| 1887 | sbuff[0] = 0x72; /* descriptor, current */ |
| 1888 | sbuff[1] = key; |
| 1889 | sbuff[2] = asc; |
| 1890 | sbuff[3] = asq; |
| 1891 | } else { |
| 1892 | sbuff[0] = 0x70; /* fixed, current */ |
| 1893 | sbuff[2] = key; |
| 1894 | sbuff[7] = 0xa; /* implies 18 byte sense buffer */ |
| 1895 | sbuff[12] = asc; |
| 1896 | sbuff[13] = asq; |
| 1897 | } |
| 1898 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 1899 | printk(KERN_INFO "scsi_debug: [sense_key,asc,ascq]: " |
| 1900 | "[0x%x,0x%x,0x%x]\n", key, asc, asq); |
| 1901 | } |
| 1902 | |
| 1903 | static int scsi_debug_abort(struct scsi_cmnd * SCpnt) |
| 1904 | { |
| 1905 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 1906 | printk(KERN_INFO "scsi_debug: abort\n"); |
| 1907 | ++num_aborts; |
| 1908 | stop_queued_cmnd(SCpnt); |
| 1909 | return SUCCESS; |
| 1910 | } |
| 1911 | |
| 1912 | static int scsi_debug_biosparam(struct scsi_device *sdev, |
| 1913 | struct block_device * bdev, sector_t capacity, int *info) |
| 1914 | { |
| 1915 | int res; |
| 1916 | unsigned char *buf; |
| 1917 | |
| 1918 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 1919 | printk(KERN_INFO "scsi_debug: biosparam\n"); |
| 1920 | buf = scsi_bios_ptable(bdev); |
| 1921 | if (buf) { |
| 1922 | res = scsi_partsize(buf, capacity, |
| 1923 | &info[2], &info[0], &info[1]); |
| 1924 | kfree(buf); |
| 1925 | if (! res) |
| 1926 | return res; |
| 1927 | } |
| 1928 | info[0] = sdebug_heads; |
| 1929 | info[1] = sdebug_sectors_per; |
| 1930 | info[2] = sdebug_cylinders_per; |
| 1931 | return 0; |
| 1932 | } |
| 1933 | |
| 1934 | static int scsi_debug_device_reset(struct scsi_cmnd * SCpnt) |
| 1935 | { |
| 1936 | struct sdebug_dev_info * devip; |
| 1937 | |
| 1938 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 1939 | printk(KERN_INFO "scsi_debug: device_reset\n"); |
| 1940 | ++num_dev_resets; |
| 1941 | if (SCpnt) { |
| 1942 | devip = devInfoReg(SCpnt->device); |
| 1943 | if (devip) |
| 1944 | devip->reset = 1; |
| 1945 | } |
| 1946 | return SUCCESS; |
| 1947 | } |
| 1948 | |
| 1949 | static int scsi_debug_bus_reset(struct scsi_cmnd * SCpnt) |
| 1950 | { |
| 1951 | struct sdebug_host_info *sdbg_host; |
| 1952 | struct sdebug_dev_info * dev_info; |
| 1953 | struct scsi_device * sdp; |
| 1954 | struct Scsi_Host * hp; |
| 1955 | |
| 1956 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 1957 | printk(KERN_INFO "scsi_debug: bus_reset\n"); |
| 1958 | ++num_bus_resets; |
| 1959 | if (SCpnt && ((sdp = SCpnt->device)) && ((hp = sdp->host))) { |
| 1960 | sdbg_host = *(struct sdebug_host_info **) hp->hostdata; |
| 1961 | if (sdbg_host) { |
| 1962 | list_for_each_entry(dev_info, |
| 1963 | &sdbg_host->dev_info_list, |
| 1964 | dev_list) |
| 1965 | dev_info->reset = 1; |
| 1966 | } |
| 1967 | } |
| 1968 | return SUCCESS; |
| 1969 | } |
| 1970 | |
| 1971 | static int scsi_debug_host_reset(struct scsi_cmnd * SCpnt) |
| 1972 | { |
| 1973 | struct sdebug_host_info * sdbg_host; |
| 1974 | struct sdebug_dev_info * dev_info; |
| 1975 | |
| 1976 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 1977 | printk(KERN_INFO "scsi_debug: host_reset\n"); |
| 1978 | ++num_host_resets; |
| 1979 | spin_lock(&sdebug_host_list_lock); |
| 1980 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { |
| 1981 | list_for_each_entry(dev_info, &sdbg_host->dev_info_list, |
| 1982 | dev_list) |
| 1983 | dev_info->reset = 1; |
| 1984 | } |
| 1985 | spin_unlock(&sdebug_host_list_lock); |
| 1986 | stop_all_queued(); |
| 1987 | return SUCCESS; |
| 1988 | } |
| 1989 | |
| 1990 | /* Returns 1 if found 'cmnd' and deleted its timer. else returns 0 */ |
| 1991 | static int stop_queued_cmnd(struct scsi_cmnd * cmnd) |
| 1992 | { |
| 1993 | unsigned long iflags; |
| 1994 | int k; |
| 1995 | struct sdebug_queued_cmd * sqcp; |
| 1996 | |
| 1997 | spin_lock_irqsave(&queued_arr_lock, iflags); |
| 1998 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { |
| 1999 | sqcp = &queued_arr[k]; |
| 2000 | if (sqcp->in_use && (cmnd == sqcp->a_cmnd)) { |
| 2001 | del_timer_sync(&sqcp->cmnd_timer); |
| 2002 | sqcp->in_use = 0; |
| 2003 | sqcp->a_cmnd = NULL; |
| 2004 | break; |
| 2005 | } |
| 2006 | } |
| 2007 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 2008 | return (k < SCSI_DEBUG_CANQUEUE) ? 1 : 0; |
| 2009 | } |
| 2010 | |
| 2011 | /* Deletes (stops) timers of all queued commands */ |
| 2012 | static void stop_all_queued(void) |
| 2013 | { |
| 2014 | unsigned long iflags; |
| 2015 | int k; |
| 2016 | struct sdebug_queued_cmd * sqcp; |
| 2017 | |
| 2018 | spin_lock_irqsave(&queued_arr_lock, iflags); |
| 2019 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { |
| 2020 | sqcp = &queued_arr[k]; |
| 2021 | if (sqcp->in_use && sqcp->a_cmnd) { |
| 2022 | del_timer_sync(&sqcp->cmnd_timer); |
| 2023 | sqcp->in_use = 0; |
| 2024 | sqcp->a_cmnd = NULL; |
| 2025 | } |
| 2026 | } |
| 2027 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 2028 | } |
| 2029 | |
| 2030 | /* Initializes timers in queued array */ |
| 2031 | static void __init init_all_queued(void) |
| 2032 | { |
| 2033 | unsigned long iflags; |
| 2034 | int k; |
| 2035 | struct sdebug_queued_cmd * sqcp; |
| 2036 | |
| 2037 | spin_lock_irqsave(&queued_arr_lock, iflags); |
| 2038 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { |
| 2039 | sqcp = &queued_arr[k]; |
| 2040 | init_timer(&sqcp->cmnd_timer); |
| 2041 | sqcp->in_use = 0; |
| 2042 | sqcp->a_cmnd = NULL; |
| 2043 | } |
| 2044 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 2045 | } |
| 2046 | |
| 2047 | static void __init sdebug_build_parts(unsigned char * ramp) |
| 2048 | { |
| 2049 | struct partition * pp; |
| 2050 | int starts[SDEBUG_MAX_PARTS + 2]; |
| 2051 | int sectors_per_part, num_sectors, k; |
| 2052 | int heads_by_sects, start_sec, end_sec; |
| 2053 | |
| 2054 | /* assume partition table already zeroed */ |
| 2055 | if ((scsi_debug_num_parts < 1) || (sdebug_store_size < 1048576)) |
| 2056 | return; |
| 2057 | if (scsi_debug_num_parts > SDEBUG_MAX_PARTS) { |
| 2058 | scsi_debug_num_parts = SDEBUG_MAX_PARTS; |
| 2059 | printk(KERN_WARNING "scsi_debug:build_parts: reducing " |
| 2060 | "partitions to %d\n", SDEBUG_MAX_PARTS); |
| 2061 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2062 | num_sectors = (int)sdebug_store_sectors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2063 | sectors_per_part = (num_sectors - sdebug_sectors_per) |
| 2064 | / scsi_debug_num_parts; |
| 2065 | heads_by_sects = sdebug_heads * sdebug_sectors_per; |
| 2066 | starts[0] = sdebug_sectors_per; |
| 2067 | for (k = 1; k < scsi_debug_num_parts; ++k) |
| 2068 | starts[k] = ((k * sectors_per_part) / heads_by_sects) |
| 2069 | * heads_by_sects; |
| 2070 | starts[scsi_debug_num_parts] = num_sectors; |
| 2071 | starts[scsi_debug_num_parts + 1] = 0; |
| 2072 | |
| 2073 | ramp[510] = 0x55; /* magic partition markings */ |
| 2074 | ramp[511] = 0xAA; |
| 2075 | pp = (struct partition *)(ramp + 0x1be); |
| 2076 | for (k = 0; starts[k + 1]; ++k, ++pp) { |
| 2077 | start_sec = starts[k]; |
| 2078 | end_sec = starts[k + 1] - 1; |
| 2079 | pp->boot_ind = 0; |
| 2080 | |
| 2081 | pp->cyl = start_sec / heads_by_sects; |
| 2082 | pp->head = (start_sec - (pp->cyl * heads_by_sects)) |
| 2083 | / sdebug_sectors_per; |
| 2084 | pp->sector = (start_sec % sdebug_sectors_per) + 1; |
| 2085 | |
| 2086 | pp->end_cyl = end_sec / heads_by_sects; |
| 2087 | pp->end_head = (end_sec - (pp->end_cyl * heads_by_sects)) |
| 2088 | / sdebug_sectors_per; |
| 2089 | pp->end_sector = (end_sec % sdebug_sectors_per) + 1; |
| 2090 | |
| 2091 | pp->start_sect = start_sec; |
| 2092 | pp->nr_sects = end_sec - start_sec + 1; |
| 2093 | pp->sys_ind = 0x83; /* plain Linux partition */ |
| 2094 | } |
| 2095 | } |
| 2096 | |
| 2097 | static int schedule_resp(struct scsi_cmnd * cmnd, |
| 2098 | struct sdebug_dev_info * devip, |
| 2099 | done_funct_t done, int scsi_result, int delta_jiff) |
| 2100 | { |
| 2101 | if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && cmnd) { |
| 2102 | if (scsi_result) { |
| 2103 | struct scsi_device * sdp = cmnd->device; |
| 2104 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2105 | printk(KERN_INFO "scsi_debug: <%u %u %u %u> " |
| 2106 | "non-zero result=0x%x\n", sdp->host->host_no, |
| 2107 | sdp->channel, sdp->id, sdp->lun, scsi_result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2108 | } |
| 2109 | } |
| 2110 | if (cmnd && devip) { |
| 2111 | /* simulate autosense by this driver */ |
| 2112 | if (SAM_STAT_CHECK_CONDITION == (scsi_result & 0xff)) |
| 2113 | memcpy(cmnd->sense_buffer, devip->sense_buff, |
| 2114 | (SCSI_SENSE_BUFFERSIZE > SDEBUG_SENSE_LEN) ? |
| 2115 | SDEBUG_SENSE_LEN : SCSI_SENSE_BUFFERSIZE); |
| 2116 | } |
| 2117 | if (delta_jiff <= 0) { |
| 2118 | if (cmnd) |
| 2119 | cmnd->result = scsi_result; |
| 2120 | if (done) |
| 2121 | done(cmnd); |
| 2122 | return 0; |
| 2123 | } else { |
| 2124 | unsigned long iflags; |
| 2125 | int k; |
| 2126 | struct sdebug_queued_cmd * sqcp = NULL; |
| 2127 | |
| 2128 | spin_lock_irqsave(&queued_arr_lock, iflags); |
| 2129 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { |
| 2130 | sqcp = &queued_arr[k]; |
| 2131 | if (! sqcp->in_use) |
| 2132 | break; |
| 2133 | } |
| 2134 | if (k >= SCSI_DEBUG_CANQUEUE) { |
| 2135 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 2136 | printk(KERN_WARNING "scsi_debug: can_queue exceeded\n"); |
| 2137 | return 1; /* report busy to mid level */ |
| 2138 | } |
| 2139 | sqcp->in_use = 1; |
| 2140 | sqcp->a_cmnd = cmnd; |
| 2141 | sqcp->scsi_result = scsi_result; |
| 2142 | sqcp->done_funct = done; |
| 2143 | sqcp->cmnd_timer.function = timer_intr_handler; |
| 2144 | sqcp->cmnd_timer.data = k; |
| 2145 | sqcp->cmnd_timer.expires = jiffies + delta_jiff; |
| 2146 | add_timer(&sqcp->cmnd_timer); |
| 2147 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 2148 | if (cmnd) |
| 2149 | cmnd->result = 0; |
| 2150 | return 0; |
| 2151 | } |
| 2152 | } |
| 2153 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2154 | module_param_named(add_host, scsi_debug_add_host, int, S_IRUGO | S_IWUSR); |
| 2155 | module_param_named(delay, scsi_debug_delay, int, S_IRUGO | S_IWUSR); |
| 2156 | module_param_named(dev_size_mb, scsi_debug_dev_size_mb, int, S_IRUGO); |
| 2157 | module_param_named(dsense, scsi_debug_dsense, int, S_IRUGO | S_IWUSR); |
| 2158 | module_param_named(every_nth, scsi_debug_every_nth, int, S_IRUGO | S_IWUSR); |
| 2159 | module_param_named(max_luns, scsi_debug_max_luns, int, S_IRUGO | S_IWUSR); |
| 2160 | module_param_named(no_lun_0, scsi_debug_no_lun_0, int, S_IRUGO | S_IWUSR); |
| 2161 | module_param_named(num_parts, scsi_debug_num_parts, int, S_IRUGO); |
| 2162 | module_param_named(num_tgts, scsi_debug_num_tgts, int, S_IRUGO | S_IWUSR); |
| 2163 | module_param_named(opts, scsi_debug_opts, int, S_IRUGO | S_IWUSR); |
| 2164 | module_param_named(ptype, scsi_debug_ptype, int, S_IRUGO | S_IWUSR); |
| 2165 | module_param_named(scsi_level, scsi_debug_scsi_level, int, S_IRUGO); |
| 2166 | module_param_named(virtual_gb, scsi_debug_virtual_gb, int, S_IRUGO | S_IWUSR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2167 | |
| 2168 | MODULE_AUTHOR("Eric Youngdale + Douglas Gilbert"); |
| 2169 | MODULE_DESCRIPTION("SCSI debug adapter driver"); |
| 2170 | MODULE_LICENSE("GPL"); |
| 2171 | MODULE_VERSION(SCSI_DEBUG_VERSION); |
| 2172 | |
| 2173 | MODULE_PARM_DESC(add_host, "0..127 hosts allowed(def=1)"); |
| 2174 | MODULE_PARM_DESC(delay, "# of jiffies to delay response(def=1)"); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2175 | MODULE_PARM_DESC(dev_size_mb, "size in MB of ram shared by devs(def=8)"); |
| 2176 | MODULE_PARM_DESC(dsense, "use descriptor sense format(def=0 -> fixed)"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2177 | MODULE_PARM_DESC(every_nth, "timeout every nth command(def=100)"); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2178 | MODULE_PARM_DESC(max_luns, "number of LUNs per target to simulate(def=1)"); |
| 2179 | 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] | 2180 | MODULE_PARM_DESC(num_parts, "number of partitions(def=0)"); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2181 | MODULE_PARM_DESC(num_tgts, "number of targets per host to simulate(def=1)"); |
| 2182 | MODULE_PARM_DESC(opts, "1->noise, 2->medium_error, 4->... (def=0)"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2183 | MODULE_PARM_DESC(ptype, "SCSI peripheral type(def=0[disk])"); |
| 2184 | 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] | 2185 | MODULE_PARM_DESC(virtual_gb, "virtual gigabyte size (def=0 -> use dev_size_mb)"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2186 | |
| 2187 | |
| 2188 | static char sdebug_info[256]; |
| 2189 | |
| 2190 | static const char * scsi_debug_info(struct Scsi_Host * shp) |
| 2191 | { |
| 2192 | sprintf(sdebug_info, "scsi_debug, version %s [%s], " |
| 2193 | "dev_size_mb=%d, opts=0x%x", SCSI_DEBUG_VERSION, |
| 2194 | scsi_debug_version_date, scsi_debug_dev_size_mb, |
| 2195 | scsi_debug_opts); |
| 2196 | return sdebug_info; |
| 2197 | } |
| 2198 | |
| 2199 | /* scsi_debug_proc_info |
| 2200 | * Used if the driver currently has no own support for /proc/scsi |
| 2201 | */ |
| 2202 | static int scsi_debug_proc_info(struct Scsi_Host *host, char *buffer, char **start, off_t offset, |
| 2203 | int length, int inout) |
| 2204 | { |
| 2205 | int len, pos, begin; |
| 2206 | int orig_length; |
| 2207 | |
| 2208 | orig_length = length; |
| 2209 | |
| 2210 | if (inout == 1) { |
| 2211 | char arr[16]; |
| 2212 | int minLen = length > 15 ? 15 : length; |
| 2213 | |
| 2214 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) |
| 2215 | return -EACCES; |
| 2216 | memcpy(arr, buffer, minLen); |
| 2217 | arr[minLen] = '\0'; |
| 2218 | if (1 != sscanf(arr, "%d", &pos)) |
| 2219 | return -EINVAL; |
| 2220 | scsi_debug_opts = pos; |
| 2221 | if (scsi_debug_every_nth != 0) |
| 2222 | scsi_debug_cmnd_count = 0; |
| 2223 | return length; |
| 2224 | } |
| 2225 | begin = 0; |
| 2226 | pos = len = sprintf(buffer, "scsi_debug adapter driver, version " |
| 2227 | "%s [%s]\n" |
| 2228 | "num_tgts=%d, shared (ram) size=%d MB, opts=0x%x, " |
| 2229 | "every_nth=%d(curr:%d)\n" |
| 2230 | "delay=%d, max_luns=%d, scsi_level=%d\n" |
| 2231 | "sector_size=%d bytes, cylinders=%d, heads=%d, sectors=%d\n" |
| 2232 | "number of aborts=%d, device_reset=%d, bus_resets=%d, " |
| 2233 | "host_resets=%d\n", |
| 2234 | SCSI_DEBUG_VERSION, scsi_debug_version_date, scsi_debug_num_tgts, |
| 2235 | scsi_debug_dev_size_mb, scsi_debug_opts, scsi_debug_every_nth, |
| 2236 | scsi_debug_cmnd_count, scsi_debug_delay, |
| 2237 | scsi_debug_max_luns, scsi_debug_scsi_level, |
| 2238 | SECT_SIZE, sdebug_cylinders_per, sdebug_heads, sdebug_sectors_per, |
| 2239 | num_aborts, num_dev_resets, num_bus_resets, num_host_resets); |
| 2240 | if (pos < offset) { |
| 2241 | len = 0; |
| 2242 | begin = pos; |
| 2243 | } |
| 2244 | *start = buffer + (offset - begin); /* Start of wanted data */ |
| 2245 | len -= (offset - begin); |
| 2246 | if (len > length) |
| 2247 | len = length; |
| 2248 | return len; |
| 2249 | } |
| 2250 | |
| 2251 | static ssize_t sdebug_delay_show(struct device_driver * ddp, char * buf) |
| 2252 | { |
| 2253 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_delay); |
| 2254 | } |
| 2255 | |
| 2256 | static ssize_t sdebug_delay_store(struct device_driver * ddp, |
| 2257 | const char * buf, size_t count) |
| 2258 | { |
| 2259 | int delay; |
| 2260 | char work[20]; |
| 2261 | |
| 2262 | if (1 == sscanf(buf, "%10s", work)) { |
| 2263 | if ((1 == sscanf(work, "%d", &delay)) && (delay >= 0)) { |
| 2264 | scsi_debug_delay = delay; |
| 2265 | return count; |
| 2266 | } |
| 2267 | } |
| 2268 | return -EINVAL; |
| 2269 | } |
| 2270 | DRIVER_ATTR(delay, S_IRUGO | S_IWUSR, sdebug_delay_show, |
| 2271 | sdebug_delay_store); |
| 2272 | |
| 2273 | static ssize_t sdebug_opts_show(struct device_driver * ddp, char * buf) |
| 2274 | { |
| 2275 | return scnprintf(buf, PAGE_SIZE, "0x%x\n", scsi_debug_opts); |
| 2276 | } |
| 2277 | |
| 2278 | static ssize_t sdebug_opts_store(struct device_driver * ddp, |
| 2279 | const char * buf, size_t count) |
| 2280 | { |
| 2281 | int opts; |
| 2282 | char work[20]; |
| 2283 | |
| 2284 | if (1 == sscanf(buf, "%10s", work)) { |
| 2285 | if (0 == strnicmp(work,"0x", 2)) { |
| 2286 | if (1 == sscanf(&work[2], "%x", &opts)) |
| 2287 | goto opts_done; |
| 2288 | } else { |
| 2289 | if (1 == sscanf(work, "%d", &opts)) |
| 2290 | goto opts_done; |
| 2291 | } |
| 2292 | } |
| 2293 | return -EINVAL; |
| 2294 | opts_done: |
| 2295 | scsi_debug_opts = opts; |
| 2296 | scsi_debug_cmnd_count = 0; |
| 2297 | return count; |
| 2298 | } |
| 2299 | DRIVER_ATTR(opts, S_IRUGO | S_IWUSR, sdebug_opts_show, |
| 2300 | sdebug_opts_store); |
| 2301 | |
| 2302 | static ssize_t sdebug_ptype_show(struct device_driver * ddp, char * buf) |
| 2303 | { |
| 2304 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ptype); |
| 2305 | } |
| 2306 | static ssize_t sdebug_ptype_store(struct device_driver * ddp, |
| 2307 | const char * buf, size_t count) |
| 2308 | { |
| 2309 | int n; |
| 2310 | |
| 2311 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2312 | scsi_debug_ptype = n; |
| 2313 | return count; |
| 2314 | } |
| 2315 | return -EINVAL; |
| 2316 | } |
| 2317 | DRIVER_ATTR(ptype, S_IRUGO | S_IWUSR, sdebug_ptype_show, sdebug_ptype_store); |
| 2318 | |
| 2319 | static ssize_t sdebug_dsense_show(struct device_driver * ddp, char * buf) |
| 2320 | { |
| 2321 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dsense); |
| 2322 | } |
| 2323 | static ssize_t sdebug_dsense_store(struct device_driver * ddp, |
| 2324 | const char * buf, size_t count) |
| 2325 | { |
| 2326 | int n; |
| 2327 | |
| 2328 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2329 | scsi_debug_dsense = n; |
| 2330 | return count; |
| 2331 | } |
| 2332 | return -EINVAL; |
| 2333 | } |
| 2334 | DRIVER_ATTR(dsense, S_IRUGO | S_IWUSR, sdebug_dsense_show, |
| 2335 | sdebug_dsense_store); |
| 2336 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2337 | static ssize_t sdebug_no_lun_0_show(struct device_driver * ddp, char * buf) |
| 2338 | { |
| 2339 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_no_lun_0); |
| 2340 | } |
| 2341 | static ssize_t sdebug_no_lun_0_store(struct device_driver * ddp, |
| 2342 | const char * buf, size_t count) |
| 2343 | { |
| 2344 | int n; |
| 2345 | |
| 2346 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2347 | scsi_debug_no_lun_0 = n; |
| 2348 | return count; |
| 2349 | } |
| 2350 | return -EINVAL; |
| 2351 | } |
| 2352 | DRIVER_ATTR(no_lun_0, S_IRUGO | S_IWUSR, sdebug_no_lun_0_show, |
| 2353 | sdebug_no_lun_0_store); |
| 2354 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2355 | static ssize_t sdebug_num_tgts_show(struct device_driver * ddp, char * buf) |
| 2356 | { |
| 2357 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_tgts); |
| 2358 | } |
| 2359 | static ssize_t sdebug_num_tgts_store(struct device_driver * ddp, |
| 2360 | const char * buf, size_t count) |
| 2361 | { |
| 2362 | int n; |
| 2363 | |
| 2364 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2365 | scsi_debug_num_tgts = n; |
| 2366 | sdebug_max_tgts_luns(); |
| 2367 | return count; |
| 2368 | } |
| 2369 | return -EINVAL; |
| 2370 | } |
| 2371 | DRIVER_ATTR(num_tgts, S_IRUGO | S_IWUSR, sdebug_num_tgts_show, |
| 2372 | sdebug_num_tgts_store); |
| 2373 | |
| 2374 | static ssize_t sdebug_dev_size_mb_show(struct device_driver * ddp, char * buf) |
| 2375 | { |
| 2376 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dev_size_mb); |
| 2377 | } |
| 2378 | DRIVER_ATTR(dev_size_mb, S_IRUGO, sdebug_dev_size_mb_show, NULL); |
| 2379 | |
| 2380 | static ssize_t sdebug_num_parts_show(struct device_driver * ddp, char * buf) |
| 2381 | { |
| 2382 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_parts); |
| 2383 | } |
| 2384 | DRIVER_ATTR(num_parts, S_IRUGO, sdebug_num_parts_show, NULL); |
| 2385 | |
| 2386 | static ssize_t sdebug_every_nth_show(struct device_driver * ddp, char * buf) |
| 2387 | { |
| 2388 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_every_nth); |
| 2389 | } |
| 2390 | static ssize_t sdebug_every_nth_store(struct device_driver * ddp, |
| 2391 | const char * buf, size_t count) |
| 2392 | { |
| 2393 | int nth; |
| 2394 | |
| 2395 | if ((count > 0) && (1 == sscanf(buf, "%d", &nth))) { |
| 2396 | scsi_debug_every_nth = nth; |
| 2397 | scsi_debug_cmnd_count = 0; |
| 2398 | return count; |
| 2399 | } |
| 2400 | return -EINVAL; |
| 2401 | } |
| 2402 | DRIVER_ATTR(every_nth, S_IRUGO | S_IWUSR, sdebug_every_nth_show, |
| 2403 | sdebug_every_nth_store); |
| 2404 | |
| 2405 | static ssize_t sdebug_max_luns_show(struct device_driver * ddp, char * buf) |
| 2406 | { |
| 2407 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_max_luns); |
| 2408 | } |
| 2409 | static ssize_t sdebug_max_luns_store(struct device_driver * ddp, |
| 2410 | const char * buf, size_t count) |
| 2411 | { |
| 2412 | int n; |
| 2413 | |
| 2414 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2415 | scsi_debug_max_luns = n; |
| 2416 | sdebug_max_tgts_luns(); |
| 2417 | return count; |
| 2418 | } |
| 2419 | return -EINVAL; |
| 2420 | } |
| 2421 | DRIVER_ATTR(max_luns, S_IRUGO | S_IWUSR, sdebug_max_luns_show, |
| 2422 | sdebug_max_luns_store); |
| 2423 | |
| 2424 | static ssize_t sdebug_scsi_level_show(struct device_driver * ddp, char * buf) |
| 2425 | { |
| 2426 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_scsi_level); |
| 2427 | } |
| 2428 | DRIVER_ATTR(scsi_level, S_IRUGO, sdebug_scsi_level_show, NULL); |
| 2429 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2430 | static ssize_t sdebug_virtual_gb_show(struct device_driver * ddp, char * buf) |
| 2431 | { |
| 2432 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_virtual_gb); |
| 2433 | } |
| 2434 | static ssize_t sdebug_virtual_gb_store(struct device_driver * ddp, |
| 2435 | const char * buf, size_t count) |
| 2436 | { |
| 2437 | int n; |
| 2438 | |
| 2439 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2440 | scsi_debug_virtual_gb = n; |
| 2441 | if (scsi_debug_virtual_gb > 0) { |
| 2442 | sdebug_capacity = 2048 * 1024; |
| 2443 | sdebug_capacity *= scsi_debug_virtual_gb; |
| 2444 | } else |
| 2445 | sdebug_capacity = sdebug_store_sectors; |
| 2446 | return count; |
| 2447 | } |
| 2448 | return -EINVAL; |
| 2449 | } |
| 2450 | DRIVER_ATTR(virtual_gb, S_IRUGO | S_IWUSR, sdebug_virtual_gb_show, |
| 2451 | sdebug_virtual_gb_store); |
| 2452 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2453 | static ssize_t sdebug_add_host_show(struct device_driver * ddp, char * buf) |
| 2454 | { |
| 2455 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_add_host); |
| 2456 | } |
| 2457 | |
| 2458 | static ssize_t sdebug_add_host_store(struct device_driver * ddp, |
| 2459 | const char * buf, size_t count) |
| 2460 | { |
| 2461 | int delta_hosts; |
| 2462 | char work[20]; |
| 2463 | |
| 2464 | if (1 != sscanf(buf, "%10s", work)) |
| 2465 | return -EINVAL; |
| 2466 | { /* temporary hack around sscanf() problem with -ve nums */ |
| 2467 | int neg = 0; |
| 2468 | |
| 2469 | if ('-' == *work) |
| 2470 | neg = 1; |
| 2471 | if (1 != sscanf(work + neg, "%d", &delta_hosts)) |
| 2472 | return -EINVAL; |
| 2473 | if (neg) |
| 2474 | delta_hosts = -delta_hosts; |
| 2475 | } |
| 2476 | if (delta_hosts > 0) { |
| 2477 | do { |
| 2478 | sdebug_add_adapter(); |
| 2479 | } while (--delta_hosts); |
| 2480 | } else if (delta_hosts < 0) { |
| 2481 | do { |
| 2482 | sdebug_remove_adapter(); |
| 2483 | } while (++delta_hosts); |
| 2484 | } |
| 2485 | return count; |
| 2486 | } |
| 2487 | DRIVER_ATTR(add_host, S_IRUGO | S_IWUSR, sdebug_add_host_show, |
| 2488 | sdebug_add_host_store); |
| 2489 | |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2490 | static int do_create_driverfs_files(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2491 | { |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2492 | int ret; |
| 2493 | |
| 2494 | ret = driver_create_file(&sdebug_driverfs_driver, &driver_attr_add_host); |
| 2495 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_delay); |
| 2496 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dev_size_mb); |
| 2497 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dsense); |
| 2498 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_every_nth); |
| 2499 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_max_luns); |
| 2500 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_num_tgts); |
| 2501 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_num_parts); |
| 2502 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_ptype); |
| 2503 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_opts); |
| 2504 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_scsi_level); |
| 2505 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2506 | } |
| 2507 | |
| 2508 | static void do_remove_driverfs_files(void) |
| 2509 | { |
| 2510 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_scsi_level); |
| 2511 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_opts); |
| 2512 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_ptype); |
| 2513 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_num_parts); |
| 2514 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_num_tgts); |
| 2515 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_max_luns); |
| 2516 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_every_nth); |
| 2517 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dsense); |
| 2518 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dev_size_mb); |
| 2519 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_delay); |
| 2520 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_add_host); |
| 2521 | } |
| 2522 | |
| 2523 | static int __init scsi_debug_init(void) |
| 2524 | { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2525 | unsigned int sz; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2526 | int host_to_add; |
| 2527 | int k; |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2528 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2529 | |
| 2530 | if (scsi_debug_dev_size_mb < 1) |
| 2531 | scsi_debug_dev_size_mb = 1; /* force minimum 1 MB ramdisk */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2532 | sdebug_store_size = (unsigned int)scsi_debug_dev_size_mb * 1048576; |
| 2533 | sdebug_store_sectors = sdebug_store_size / SECT_SIZE; |
| 2534 | if (scsi_debug_virtual_gb > 0) { |
| 2535 | sdebug_capacity = 2048 * 1024; |
| 2536 | sdebug_capacity *= scsi_debug_virtual_gb; |
| 2537 | } else |
| 2538 | sdebug_capacity = sdebug_store_sectors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2539 | |
| 2540 | /* play around with geometry, don't waste too much on track 0 */ |
| 2541 | sdebug_heads = 8; |
| 2542 | sdebug_sectors_per = 32; |
| 2543 | if (scsi_debug_dev_size_mb >= 16) |
| 2544 | sdebug_heads = 32; |
| 2545 | else if (scsi_debug_dev_size_mb >= 256) |
| 2546 | sdebug_heads = 64; |
| 2547 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / |
| 2548 | (sdebug_sectors_per * sdebug_heads); |
| 2549 | if (sdebug_cylinders_per >= 1024) { |
| 2550 | /* other LLDs do this; implies >= 1GB ram disk ... */ |
| 2551 | sdebug_heads = 255; |
| 2552 | sdebug_sectors_per = 63; |
| 2553 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / |
| 2554 | (sdebug_sectors_per * sdebug_heads); |
| 2555 | } |
| 2556 | |
| 2557 | sz = sdebug_store_size; |
| 2558 | fake_storep = vmalloc(sz); |
| 2559 | if (NULL == fake_storep) { |
| 2560 | printk(KERN_ERR "scsi_debug_init: out of memory, 1\n"); |
| 2561 | return -ENOMEM; |
| 2562 | } |
| 2563 | memset(fake_storep, 0, sz); |
| 2564 | if (scsi_debug_num_parts > 0) |
| 2565 | sdebug_build_parts(fake_storep); |
| 2566 | |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2567 | ret = device_register(&pseudo_primary); |
| 2568 | if (ret < 0) { |
| 2569 | printk(KERN_WARNING "scsi_debug: device_register error: %d\n", |
| 2570 | ret); |
| 2571 | goto free_vm; |
| 2572 | } |
| 2573 | ret = bus_register(&pseudo_lld_bus); |
| 2574 | if (ret < 0) { |
| 2575 | printk(KERN_WARNING "scsi_debug: bus_register error: %d\n", |
| 2576 | ret); |
| 2577 | goto dev_unreg; |
| 2578 | } |
| 2579 | ret = driver_register(&sdebug_driverfs_driver); |
| 2580 | if (ret < 0) { |
| 2581 | printk(KERN_WARNING "scsi_debug: driver_register error: %d\n", |
| 2582 | ret); |
| 2583 | goto bus_unreg; |
| 2584 | } |
| 2585 | ret = do_create_driverfs_files(); |
| 2586 | if (ret < 0) { |
| 2587 | printk(KERN_WARNING "scsi_debug: driver_create_file error: %d\n", |
| 2588 | ret); |
| 2589 | goto del_files; |
| 2590 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2591 | |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2592 | init_all_queued(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2593 | |
| 2594 | sdebug_driver_template.proc_name = (char *)sdebug_proc_name; |
| 2595 | |
| 2596 | host_to_add = scsi_debug_add_host; |
| 2597 | scsi_debug_add_host = 0; |
| 2598 | |
| 2599 | for (k = 0; k < host_to_add; k++) { |
| 2600 | if (sdebug_add_adapter()) { |
| 2601 | printk(KERN_ERR "scsi_debug_init: " |
| 2602 | "sdebug_add_adapter failed k=%d\n", k); |
| 2603 | break; |
| 2604 | } |
| 2605 | } |
| 2606 | |
| 2607 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { |
| 2608 | printk(KERN_INFO "scsi_debug_init: built %d host(s)\n", |
| 2609 | scsi_debug_add_host); |
| 2610 | } |
| 2611 | return 0; |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2612 | |
| 2613 | del_files: |
| 2614 | do_remove_driverfs_files(); |
| 2615 | driver_unregister(&sdebug_driverfs_driver); |
| 2616 | bus_unreg: |
| 2617 | bus_unregister(&pseudo_lld_bus); |
| 2618 | dev_unreg: |
| 2619 | device_unregister(&pseudo_primary); |
| 2620 | free_vm: |
| 2621 | vfree(fake_storep); |
| 2622 | |
| 2623 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2624 | } |
| 2625 | |
| 2626 | static void __exit scsi_debug_exit(void) |
| 2627 | { |
| 2628 | int k = scsi_debug_add_host; |
| 2629 | |
| 2630 | stop_all_queued(); |
| 2631 | for (; k; k--) |
| 2632 | sdebug_remove_adapter(); |
| 2633 | do_remove_driverfs_files(); |
| 2634 | driver_unregister(&sdebug_driverfs_driver); |
| 2635 | bus_unregister(&pseudo_lld_bus); |
| 2636 | device_unregister(&pseudo_primary); |
| 2637 | |
| 2638 | vfree(fake_storep); |
| 2639 | } |
| 2640 | |
| 2641 | device_initcall(scsi_debug_init); |
| 2642 | module_exit(scsi_debug_exit); |
| 2643 | |
Adrian Bunk | 52c1da3 | 2005-06-23 22:05:33 -0700 | [diff] [blame] | 2644 | static void pseudo_0_release(struct device * dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2645 | { |
| 2646 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 2647 | printk(KERN_INFO "scsi_debug: pseudo_0_release() called\n"); |
| 2648 | } |
| 2649 | |
| 2650 | static struct device pseudo_primary = { |
| 2651 | .bus_id = "pseudo_0", |
| 2652 | .release = pseudo_0_release, |
| 2653 | }; |
| 2654 | |
| 2655 | static int pseudo_lld_bus_match(struct device *dev, |
| 2656 | struct device_driver *dev_driver) |
| 2657 | { |
| 2658 | return 1; |
| 2659 | } |
| 2660 | |
| 2661 | static struct bus_type pseudo_lld_bus = { |
| 2662 | .name = "pseudo", |
| 2663 | .match = pseudo_lld_bus_match, |
Russell King | bbbe3a4 | 2006-01-05 14:44:46 +0000 | [diff] [blame] | 2664 | .probe = sdebug_driver_probe, |
| 2665 | .remove = sdebug_driver_remove, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2666 | }; |
| 2667 | |
| 2668 | static void sdebug_release_adapter(struct device * dev) |
| 2669 | { |
| 2670 | struct sdebug_host_info *sdbg_host; |
| 2671 | |
| 2672 | sdbg_host = to_sdebug_host(dev); |
| 2673 | kfree(sdbg_host); |
| 2674 | } |
| 2675 | |
| 2676 | static int sdebug_add_adapter(void) |
| 2677 | { |
| 2678 | int k, devs_per_host; |
| 2679 | int error = 0; |
| 2680 | struct sdebug_host_info *sdbg_host; |
| 2681 | struct sdebug_dev_info *sdbg_devinfo; |
| 2682 | struct list_head *lh, *lh_sf; |
| 2683 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2684 | sdbg_host = kzalloc(sizeof(*sdbg_host),GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2685 | |
| 2686 | if (NULL == sdbg_host) { |
| 2687 | printk(KERN_ERR "%s: out of memory at line %d\n", |
| 2688 | __FUNCTION__, __LINE__); |
| 2689 | return -ENOMEM; |
| 2690 | } |
| 2691 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2692 | INIT_LIST_HEAD(&sdbg_host->dev_info_list); |
| 2693 | |
| 2694 | devs_per_host = scsi_debug_num_tgts * scsi_debug_max_luns; |
| 2695 | for (k = 0; k < devs_per_host; k++) { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2696 | sdbg_devinfo = kzalloc(sizeof(*sdbg_devinfo),GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2697 | if (NULL == sdbg_devinfo) { |
| 2698 | printk(KERN_ERR "%s: out of memory at line %d\n", |
| 2699 | __FUNCTION__, __LINE__); |
| 2700 | error = -ENOMEM; |
| 2701 | goto clean; |
| 2702 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2703 | sdbg_devinfo->sdbg_host = sdbg_host; |
| 2704 | list_add_tail(&sdbg_devinfo->dev_list, |
| 2705 | &sdbg_host->dev_info_list); |
| 2706 | } |
| 2707 | |
| 2708 | spin_lock(&sdebug_host_list_lock); |
| 2709 | list_add_tail(&sdbg_host->host_list, &sdebug_host_list); |
| 2710 | spin_unlock(&sdebug_host_list_lock); |
| 2711 | |
| 2712 | sdbg_host->dev.bus = &pseudo_lld_bus; |
| 2713 | sdbg_host->dev.parent = &pseudo_primary; |
| 2714 | sdbg_host->dev.release = &sdebug_release_adapter; |
| 2715 | sprintf(sdbg_host->dev.bus_id, "adapter%d", scsi_debug_add_host); |
| 2716 | |
| 2717 | error = device_register(&sdbg_host->dev); |
| 2718 | |
| 2719 | if (error) |
| 2720 | goto clean; |
| 2721 | |
| 2722 | ++scsi_debug_add_host; |
| 2723 | return error; |
| 2724 | |
| 2725 | clean: |
| 2726 | list_for_each_safe(lh, lh_sf, &sdbg_host->dev_info_list) { |
| 2727 | sdbg_devinfo = list_entry(lh, struct sdebug_dev_info, |
| 2728 | dev_list); |
| 2729 | list_del(&sdbg_devinfo->dev_list); |
| 2730 | kfree(sdbg_devinfo); |
| 2731 | } |
| 2732 | |
| 2733 | kfree(sdbg_host); |
| 2734 | return error; |
| 2735 | } |
| 2736 | |
| 2737 | static void sdebug_remove_adapter(void) |
| 2738 | { |
| 2739 | struct sdebug_host_info * sdbg_host = NULL; |
| 2740 | |
| 2741 | spin_lock(&sdebug_host_list_lock); |
| 2742 | if (!list_empty(&sdebug_host_list)) { |
| 2743 | sdbg_host = list_entry(sdebug_host_list.prev, |
| 2744 | struct sdebug_host_info, host_list); |
| 2745 | list_del(&sdbg_host->host_list); |
| 2746 | } |
| 2747 | spin_unlock(&sdebug_host_list_lock); |
| 2748 | |
| 2749 | if (!sdbg_host) |
| 2750 | return; |
| 2751 | |
| 2752 | device_unregister(&sdbg_host->dev); |
| 2753 | --scsi_debug_add_host; |
| 2754 | } |
| 2755 | |
| 2756 | static int sdebug_driver_probe(struct device * dev) |
| 2757 | { |
| 2758 | int error = 0; |
| 2759 | struct sdebug_host_info *sdbg_host; |
| 2760 | struct Scsi_Host *hpnt; |
| 2761 | |
| 2762 | sdbg_host = to_sdebug_host(dev); |
| 2763 | |
| 2764 | hpnt = scsi_host_alloc(&sdebug_driver_template, sizeof(sdbg_host)); |
| 2765 | if (NULL == hpnt) { |
| 2766 | printk(KERN_ERR "%s: scsi_register failed\n", __FUNCTION__); |
| 2767 | error = -ENODEV; |
| 2768 | return error; |
| 2769 | } |
| 2770 | |
| 2771 | sdbg_host->shost = hpnt; |
| 2772 | *((struct sdebug_host_info **)hpnt->hostdata) = sdbg_host; |
| 2773 | if ((hpnt->this_id >= 0) && (scsi_debug_num_tgts > hpnt->this_id)) |
| 2774 | hpnt->max_id = scsi_debug_num_tgts + 1; |
| 2775 | else |
| 2776 | hpnt->max_id = scsi_debug_num_tgts; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2777 | hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; /* = scsi_debug_max_luns; */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2778 | |
| 2779 | error = scsi_add_host(hpnt, &sdbg_host->dev); |
| 2780 | if (error) { |
| 2781 | printk(KERN_ERR "%s: scsi_add_host failed\n", __FUNCTION__); |
| 2782 | error = -ENODEV; |
| 2783 | scsi_host_put(hpnt); |
| 2784 | } else |
| 2785 | scsi_scan_host(hpnt); |
| 2786 | |
| 2787 | |
| 2788 | return error; |
| 2789 | } |
| 2790 | |
| 2791 | static int sdebug_driver_remove(struct device * dev) |
| 2792 | { |
| 2793 | struct list_head *lh, *lh_sf; |
| 2794 | struct sdebug_host_info *sdbg_host; |
| 2795 | struct sdebug_dev_info *sdbg_devinfo; |
| 2796 | |
| 2797 | sdbg_host = to_sdebug_host(dev); |
| 2798 | |
| 2799 | if (!sdbg_host) { |
| 2800 | printk(KERN_ERR "%s: Unable to locate host info\n", |
| 2801 | __FUNCTION__); |
| 2802 | return -ENODEV; |
| 2803 | } |
| 2804 | |
| 2805 | scsi_remove_host(sdbg_host->shost); |
| 2806 | |
| 2807 | list_for_each_safe(lh, lh_sf, &sdbg_host->dev_info_list) { |
| 2808 | sdbg_devinfo = list_entry(lh, struct sdebug_dev_info, |
| 2809 | dev_list); |
| 2810 | list_del(&sdbg_devinfo->dev_list); |
| 2811 | kfree(sdbg_devinfo); |
| 2812 | } |
| 2813 | |
| 2814 | scsi_host_put(sdbg_host->shost); |
| 2815 | return 0; |
| 2816 | } |
| 2817 | |
| 2818 | static void sdebug_max_tgts_luns(void) |
| 2819 | { |
| 2820 | struct sdebug_host_info * sdbg_host; |
| 2821 | struct Scsi_Host *hpnt; |
| 2822 | |
| 2823 | spin_lock(&sdebug_host_list_lock); |
| 2824 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { |
| 2825 | hpnt = sdbg_host->shost; |
| 2826 | if ((hpnt->this_id >= 0) && |
| 2827 | (scsi_debug_num_tgts > hpnt->this_id)) |
| 2828 | hpnt->max_id = scsi_debug_num_tgts + 1; |
| 2829 | else |
| 2830 | hpnt->max_id = scsi_debug_num_tgts; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2831 | hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; /* scsi_debug_max_luns; */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2832 | } |
| 2833 | spin_unlock(&sdebug_host_list_lock); |
| 2834 | } |