Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * vvvvvvvvvvvvvvvvvvvvvvv Original vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv |
| 3 | * Copyright (C) 1992 Eric Youngdale |
| 4 | * Simulate a host adapter with 2 disks attached. Do a lot of checking |
| 5 | * to make sure that we are not getting blocks mixed up, and PANIC if |
| 6 | * anything out of the ordinary is seen. |
| 7 | * ^^^^^^^^^^^^^^^^^^^^^^^ Original ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |
| 8 | * |
| 9 | * This version is more generic, simulating a variable number of disk |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 10 | * (or disk like devices) sharing a common amount of RAM. To be more |
| 11 | * realistic, the simulated devices have the transport attributes of |
| 12 | * SAS disks. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | * |
| 14 | * |
| 15 | * For documentation see http://www.torque.net/sg/sdebug26.html |
| 16 | * |
| 17 | * D. Gilbert (dpg) work for Magneto-Optical device test [20010421] |
| 18 | * dpg: work for devfs large number of disks [20010809] |
| 19 | * forked for lk 2.5 series [20011216, 20020101] |
| 20 | * use vmalloc() more inquiry+mode_sense [20020302] |
| 21 | * add timers for delayed responses [20020721] |
| 22 | * Patrick Mansfield <patmans@us.ibm.com> max_luns+scsi_level [20021031] |
| 23 | * Mike Anderson <andmike@us.ibm.com> sysfs work [20021118] |
| 24 | * dpg: change style of boot options to "scsi_debug.num_tgts=2" and |
| 25 | * module options to "modprobe scsi_debug num_tgts=2" [20021221] |
| 26 | */ |
| 27 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | #include <linux/module.h> |
| 29 | |
| 30 | #include <linux/kernel.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #include <linux/errno.h> |
| 32 | #include <linux/timer.h> |
| 33 | #include <linux/types.h> |
| 34 | #include <linux/string.h> |
| 35 | #include <linux/genhd.h> |
| 36 | #include <linux/fs.h> |
| 37 | #include <linux/init.h> |
| 38 | #include <linux/proc_fs.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | #include <linux/vmalloc.h> |
| 40 | #include <linux/moduleparam.h> |
Jens Axboe | 852e034 | 2007-07-16 10:19:24 +0200 | [diff] [blame] | 41 | #include <linux/scatterlist.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #include <linux/blkdev.h> |
FUJITA Tomonori | 9ff26ee | 2008-03-02 18:30:15 +0900 | [diff] [blame] | 43 | |
| 44 | #include <scsi/scsi.h> |
| 45 | #include <scsi/scsi_cmnd.h> |
| 46 | #include <scsi/scsi_device.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | #include <scsi/scsi_host.h> |
| 48 | #include <scsi/scsicam.h> |
| 49 | |
| 50 | #include <linux/stat.h> |
| 51 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | #include "scsi_logging.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 54 | #define SCSI_DEBUG_VERSION "1.81" |
| 55 | static const char * scsi_debug_version_date = "20070104"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 57 | /* Additional Sense Code (ASC) */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 58 | #define NO_ADDITIONAL_SENSE 0x0 |
| 59 | #define LOGICAL_UNIT_NOT_READY 0x4 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | #define UNRECOVERED_READ_ERR 0x11 |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 61 | #define PARAMETER_LIST_LENGTH_ERR 0x1a |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | #define INVALID_OPCODE 0x20 |
| 63 | #define ADDR_OUT_OF_RANGE 0x21 |
| 64 | #define INVALID_FIELD_IN_CDB 0x24 |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 65 | #define INVALID_FIELD_IN_PARAM_LIST 0x26 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | #define POWERON_RESET 0x29 |
| 67 | #define SAVING_PARAMS_UNSUP 0x39 |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 68 | #define TRANSPORT_PROBLEM 0x4b |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 69 | #define THRESHOLD_EXCEEDED 0x5d |
| 70 | #define LOW_POWER_COND_ON 0x5e |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 72 | /* Additional Sense Code Qualifier (ASCQ) */ |
| 73 | #define ACK_NAK_TO 0x3 |
| 74 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | #define SDEBUG_TAGGED_QUEUING 0 /* 0 | MSG_SIMPLE_TAG | MSG_ORDERED_TAG */ |
| 76 | |
| 77 | /* Default values for driver parameters */ |
| 78 | #define DEF_NUM_HOST 1 |
| 79 | #define DEF_NUM_TGTS 1 |
| 80 | #define DEF_MAX_LUNS 1 |
| 81 | /* With these defaults, this driver will make 1 host with 1 target |
| 82 | * (id 0) containing 1 logical unit (lun 0). That is 1 device. |
| 83 | */ |
| 84 | #define DEF_DELAY 1 |
| 85 | #define DEF_DEV_SIZE_MB 8 |
| 86 | #define DEF_EVERY_NTH 0 |
| 87 | #define DEF_NUM_PARTS 0 |
| 88 | #define DEF_OPTS 0 |
| 89 | #define DEF_SCSI_LEVEL 5 /* INQUIRY, byte2 [5->SPC-3] */ |
| 90 | #define DEF_PTYPE 0 |
| 91 | #define DEF_D_SENSE 0 |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 92 | #define DEF_NO_LUN_0 0 |
| 93 | #define DEF_VIRTUAL_GB 0 |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 94 | #define DEF_FAKE_RW 0 |
| 95 | #define DEF_VPD_USE_HOSTNO 1 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | |
| 97 | /* bit mask values for scsi_debug_opts */ |
| 98 | #define SCSI_DEBUG_OPT_NOISE 1 |
| 99 | #define SCSI_DEBUG_OPT_MEDIUM_ERR 2 |
| 100 | #define SCSI_DEBUG_OPT_TIMEOUT 4 |
| 101 | #define SCSI_DEBUG_OPT_RECOVERED_ERR 8 |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 102 | #define SCSI_DEBUG_OPT_TRANSPORT_ERR 16 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | /* When "every_nth" > 0 then modulo "every_nth" commands: |
| 104 | * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set |
| 105 | * - a RECOVERED_ERROR is simulated on successful read and write |
| 106 | * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 107 | * - a TRANSPORT_ERROR is simulated on successful read and write |
| 108 | * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | * |
| 110 | * When "every_nth" < 0 then after "- every_nth" commands: |
| 111 | * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set |
| 112 | * - a RECOVERED_ERROR is simulated on successful read and write |
| 113 | * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 114 | * - a TRANSPORT_ERROR is simulated on successful read and write |
| 115 | * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | * This will continue until some other action occurs (e.g. the user |
| 117 | * writing a new value (other than -1 or 1) to every_nth via sysfs). |
| 118 | */ |
| 119 | |
| 120 | /* when 1==SCSI_DEBUG_OPT_MEDIUM_ERR, a medium error is simulated at this |
| 121 | * sector on read commands: */ |
| 122 | #define OPT_MEDIUM_ERR_ADDR 0x1234 /* that's sector 4660 in decimal */ |
| 123 | |
| 124 | /* If REPORT LUNS has luns >= 256 it can choose "flat space" (value 1) |
| 125 | * or "peripheral device" addressing (value 0) */ |
| 126 | #define SAM2_LUN_ADDRESS_METHOD 0 |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 127 | #define SAM2_WLUN_REPORT_LUNS 0xc101 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | |
| 129 | static int scsi_debug_add_host = DEF_NUM_HOST; |
| 130 | static int scsi_debug_delay = DEF_DELAY; |
| 131 | static int scsi_debug_dev_size_mb = DEF_DEV_SIZE_MB; |
| 132 | static int scsi_debug_every_nth = DEF_EVERY_NTH; |
| 133 | static int scsi_debug_max_luns = DEF_MAX_LUNS; |
| 134 | static int scsi_debug_num_parts = DEF_NUM_PARTS; |
| 135 | static int scsi_debug_num_tgts = DEF_NUM_TGTS; /* targets per host */ |
| 136 | static int scsi_debug_opts = DEF_OPTS; |
| 137 | static int scsi_debug_scsi_level = DEF_SCSI_LEVEL; |
| 138 | static int scsi_debug_ptype = DEF_PTYPE; /* SCSI peripheral type (0==disk) */ |
| 139 | static int scsi_debug_dsense = DEF_D_SENSE; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 140 | static int scsi_debug_no_lun_0 = DEF_NO_LUN_0; |
| 141 | static int scsi_debug_virtual_gb = DEF_VIRTUAL_GB; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 142 | static int scsi_debug_fake_rw = DEF_FAKE_RW; |
| 143 | static int scsi_debug_vpd_use_hostno = DEF_VPD_USE_HOSTNO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | |
| 145 | static int scsi_debug_cmnd_count = 0; |
| 146 | |
| 147 | #define DEV_READONLY(TGT) (0) |
| 148 | #define DEV_REMOVEABLE(TGT) (0) |
| 149 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 150 | static unsigned int sdebug_store_size; /* in bytes */ |
| 151 | static unsigned int sdebug_store_sectors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | static sector_t sdebug_capacity; /* in sectors */ |
| 153 | |
| 154 | /* old BIOS stuff, kernel may get rid of them but some mode sense pages |
| 155 | may still need them */ |
| 156 | static int sdebug_heads; /* heads per disk */ |
| 157 | static int sdebug_cylinders_per; /* cylinders per surface */ |
| 158 | static int sdebug_sectors_per; /* sectors per cylinder */ |
| 159 | |
| 160 | /* default sector size is 512 bytes, 2**9 bytes */ |
| 161 | #define POW2_SECT_SIZE 9 |
| 162 | #define SECT_SIZE (1 << POW2_SECT_SIZE) |
| 163 | #define SECT_SIZE_PER(TGT) SECT_SIZE |
| 164 | |
| 165 | #define SDEBUG_MAX_PARTS 4 |
| 166 | |
| 167 | #define SDEBUG_SENSE_LEN 32 |
| 168 | |
FUJITA Tomonori | 9e603ca | 2008-03-02 18:30:16 +0900 | [diff] [blame^] | 169 | #define SCSI_DEBUG_CANQUEUE 255 |
| 170 | #define SCSI_DEBUG_MAX_CMD_LEN 16 |
| 171 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | struct sdebug_dev_info { |
| 173 | struct list_head dev_list; |
| 174 | unsigned char sense_buff[SDEBUG_SENSE_LEN]; /* weak nexus */ |
| 175 | unsigned int channel; |
| 176 | unsigned int target; |
| 177 | unsigned int lun; |
| 178 | struct sdebug_host_info *sdbg_host; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 179 | unsigned int wlun; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | char reset; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 181 | char stopped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | char used; |
| 183 | }; |
| 184 | |
| 185 | struct sdebug_host_info { |
| 186 | struct list_head host_list; |
| 187 | struct Scsi_Host *shost; |
| 188 | struct device dev; |
| 189 | struct list_head dev_info_list; |
| 190 | }; |
| 191 | |
| 192 | #define to_sdebug_host(d) \ |
| 193 | container_of(d, struct sdebug_host_info, dev) |
| 194 | |
| 195 | static LIST_HEAD(sdebug_host_list); |
| 196 | static DEFINE_SPINLOCK(sdebug_host_list_lock); |
| 197 | |
| 198 | typedef void (* done_funct_t) (struct scsi_cmnd *); |
| 199 | |
| 200 | struct sdebug_queued_cmd { |
| 201 | int in_use; |
| 202 | struct timer_list cmnd_timer; |
| 203 | done_funct_t done_funct; |
| 204 | struct scsi_cmnd * a_cmnd; |
| 205 | int scsi_result; |
| 206 | }; |
| 207 | static struct sdebug_queued_cmd queued_arr[SCSI_DEBUG_CANQUEUE]; |
| 208 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | static unsigned char * fake_storep; /* ramdisk storage */ |
| 210 | |
| 211 | static int num_aborts = 0; |
| 212 | static int num_dev_resets = 0; |
| 213 | static int num_bus_resets = 0; |
| 214 | static int num_host_resets = 0; |
| 215 | |
| 216 | static DEFINE_SPINLOCK(queued_arr_lock); |
| 217 | static DEFINE_RWLOCK(atomic_rw); |
| 218 | |
| 219 | static char sdebug_proc_name[] = "scsi_debug"; |
| 220 | |
| 221 | static int sdebug_driver_probe(struct device *); |
| 222 | static int sdebug_driver_remove(struct device *); |
| 223 | static struct bus_type pseudo_lld_bus; |
| 224 | |
| 225 | static struct device_driver sdebug_driverfs_driver = { |
| 226 | .name = sdebug_proc_name, |
| 227 | .bus = &pseudo_lld_bus, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | }; |
| 229 | |
| 230 | static const int check_condition_result = |
| 231 | (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
| 232 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 233 | static unsigned char ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, |
| 234 | 0, 0, 0x2, 0x4b}; |
| 235 | static unsigned char iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, |
| 236 | 0, 0, 0x0, 0x0}; |
| 237 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | /* function declarations */ |
| 239 | static int resp_inquiry(struct scsi_cmnd * SCpnt, int target, |
| 240 | struct sdebug_dev_info * devip); |
| 241 | static int resp_requests(struct scsi_cmnd * SCpnt, |
| 242 | struct sdebug_dev_info * devip); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 243 | static int resp_start_stop(struct scsi_cmnd * scp, |
| 244 | struct sdebug_dev_info * devip); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 245 | static int resp_report_tgtpgs(struct scsi_cmnd * scp, |
| 246 | struct sdebug_dev_info * devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | static int resp_readcap(struct scsi_cmnd * SCpnt, |
| 248 | struct sdebug_dev_info * devip); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 249 | static int resp_readcap16(struct scsi_cmnd * SCpnt, |
| 250 | struct sdebug_dev_info * devip); |
| 251 | static int resp_mode_sense(struct scsi_cmnd * scp, int target, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | struct sdebug_dev_info * devip); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 253 | static int resp_mode_select(struct scsi_cmnd * scp, int mselect6, |
| 254 | struct sdebug_dev_info * devip); |
| 255 | static int resp_log_sense(struct scsi_cmnd * scp, |
| 256 | struct sdebug_dev_info * devip); |
| 257 | static int resp_read(struct scsi_cmnd * SCpnt, unsigned long long lba, |
| 258 | unsigned int num, struct sdebug_dev_info * devip); |
| 259 | static int resp_write(struct scsi_cmnd * SCpnt, unsigned long long lba, |
| 260 | unsigned int num, struct sdebug_dev_info * devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | static int resp_report_luns(struct scsi_cmnd * SCpnt, |
| 262 | struct sdebug_dev_info * devip); |
FUJITA Tomonori | c639d14 | 2008-01-23 01:32:01 +0900 | [diff] [blame] | 263 | static int resp_xdwriteread(struct scsi_cmnd *scp, unsigned long long lba, |
| 264 | unsigned int num, struct sdebug_dev_info *devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | static int fill_from_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr, |
| 266 | int arr_len); |
| 267 | static int fetch_to_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr, |
| 268 | int max_arr_len); |
| 269 | static void timer_intr_handler(unsigned long); |
| 270 | static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev); |
| 271 | static void mk_sense_buffer(struct sdebug_dev_info * devip, int key, |
| 272 | int asc, int asq); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 273 | static int check_readiness(struct scsi_cmnd * SCpnt, int reset_only, |
| 274 | struct sdebug_dev_info * devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | static int schedule_resp(struct scsi_cmnd * cmnd, |
| 276 | struct sdebug_dev_info * devip, |
| 277 | done_funct_t done, int scsi_result, int delta_jiff); |
| 278 | static void __init sdebug_build_parts(unsigned char * ramp); |
| 279 | static void __init init_all_queued(void); |
| 280 | static void stop_all_queued(void); |
| 281 | static int stop_queued_cmnd(struct scsi_cmnd * cmnd); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 282 | static int inquiry_evpd_83(unsigned char * arr, int port_group_id, |
| 283 | int target_dev_id, int dev_id_num, |
| 284 | const char * dev_id_str, int dev_id_str_len); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 285 | static int inquiry_evpd_88(unsigned char * arr, int target_dev_id); |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 286 | static int do_create_driverfs_files(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | static void do_remove_driverfs_files(void); |
| 288 | |
| 289 | static int sdebug_add_adapter(void); |
| 290 | static void sdebug_remove_adapter(void); |
| 291 | static void sdebug_max_tgts_luns(void); |
| 292 | |
| 293 | static struct device pseudo_primary; |
| 294 | static struct bus_type pseudo_lld_bus; |
| 295 | |
FUJITA Tomonori | 3de9f94 | 2008-01-23 01:31:59 +0900 | [diff] [blame] | 296 | static void get_data_transfer_info(unsigned char *cmd, |
| 297 | unsigned long long *lba, unsigned int *num) |
| 298 | { |
| 299 | int i; |
| 300 | |
| 301 | switch (*cmd) { |
| 302 | case WRITE_16: |
| 303 | case READ_16: |
| 304 | for (*lba = 0, i = 0; i < 8; ++i) { |
| 305 | if (i > 0) |
| 306 | *lba <<= 8; |
| 307 | *lba += cmd[2 + i]; |
| 308 | } |
| 309 | *num = cmd[13] + (cmd[12] << 8) + |
| 310 | (cmd[11] << 16) + (cmd[10] << 24); |
| 311 | break; |
| 312 | case WRITE_12: |
| 313 | case READ_12: |
| 314 | *lba = cmd[5] + (cmd[4] << 8) + (cmd[3] << 16) + (cmd[2] << 24); |
| 315 | *num = cmd[9] + (cmd[8] << 8) + (cmd[7] << 16) + (cmd[6] << 24); |
| 316 | break; |
| 317 | case WRITE_10: |
| 318 | case READ_10: |
FUJITA Tomonori | c639d14 | 2008-01-23 01:32:01 +0900 | [diff] [blame] | 319 | case XDWRITEREAD_10: |
FUJITA Tomonori | 3de9f94 | 2008-01-23 01:31:59 +0900 | [diff] [blame] | 320 | *lba = cmd[5] + (cmd[4] << 8) + (cmd[3] << 16) + (cmd[2] << 24); |
| 321 | *num = cmd[8] + (cmd[7] << 8); |
| 322 | break; |
| 323 | case WRITE_6: |
| 324 | case READ_6: |
| 325 | *lba = cmd[3] + (cmd[2] << 8) + ((cmd[1] & 0x1f) << 16); |
| 326 | *num = (0 == cmd[4]) ? 256 : cmd[4]; |
| 327 | break; |
| 328 | default: |
| 329 | break; |
| 330 | } |
| 331 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | |
| 333 | static |
| 334 | int scsi_debug_queuecommand(struct scsi_cmnd * SCpnt, done_funct_t done) |
| 335 | { |
| 336 | unsigned char *cmd = (unsigned char *) SCpnt->cmnd; |
FUJITA Tomonori | 3de9f94 | 2008-01-23 01:31:59 +0900 | [diff] [blame] | 337 | int len, k; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 338 | unsigned int num; |
| 339 | unsigned long long lba; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | int errsts = 0; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 341 | int target = SCpnt->device->id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | struct sdebug_dev_info * devip = NULL; |
| 343 | int inj_recovered = 0; |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 344 | int inj_transport = 0; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 345 | int delay_override = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | |
| 347 | if (done == NULL) |
| 348 | return 0; /* assume mid level reprocessing command */ |
| 349 | |
Boaz Harrosh | c73961e | 2007-09-07 06:50:20 +0900 | [diff] [blame] | 350 | scsi_set_resid(SCpnt, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && cmd) { |
| 352 | printk(KERN_INFO "scsi_debug: cmd "); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 353 | for (k = 0, len = SCpnt->cmd_len; k < len; ++k) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | printk("%02x ", (int)cmd[k]); |
| 355 | printk("\n"); |
| 356 | } |
FUJITA Tomonori | 9e603ca | 2008-03-02 18:30:16 +0900 | [diff] [blame^] | 357 | |
| 358 | if (target == SCpnt->device->host->hostt->this_id) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | printk(KERN_INFO "scsi_debug: initiator's id used as " |
| 360 | "target!\n"); |
| 361 | return schedule_resp(SCpnt, NULL, done, |
| 362 | DID_NO_CONNECT << 16, 0); |
| 363 | } |
| 364 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 365 | if ((SCpnt->device->lun >= scsi_debug_max_luns) && |
| 366 | (SCpnt->device->lun != SAM2_WLUN_REPORT_LUNS)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | return schedule_resp(SCpnt, NULL, done, |
| 368 | DID_NO_CONNECT << 16, 0); |
| 369 | devip = devInfoReg(SCpnt->device); |
| 370 | if (NULL == devip) |
| 371 | return schedule_resp(SCpnt, NULL, done, |
| 372 | DID_NO_CONNECT << 16, 0); |
| 373 | |
| 374 | if ((scsi_debug_every_nth != 0) && |
| 375 | (++scsi_debug_cmnd_count >= abs(scsi_debug_every_nth))) { |
| 376 | scsi_debug_cmnd_count = 0; |
| 377 | if (scsi_debug_every_nth < -1) |
| 378 | scsi_debug_every_nth = -1; |
| 379 | if (SCSI_DEBUG_OPT_TIMEOUT & scsi_debug_opts) |
| 380 | return 0; /* ignore command causing timeout */ |
| 381 | else if (SCSI_DEBUG_OPT_RECOVERED_ERR & scsi_debug_opts) |
| 382 | inj_recovered = 1; /* to reads and writes below */ |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 383 | else if (SCSI_DEBUG_OPT_TRANSPORT_ERR & scsi_debug_opts) |
| 384 | inj_transport = 1; /* to reads and writes below */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | } |
| 386 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 387 | if (devip->wlun) { |
| 388 | switch (*cmd) { |
| 389 | case INQUIRY: |
| 390 | case REQUEST_SENSE: |
| 391 | case TEST_UNIT_READY: |
| 392 | case REPORT_LUNS: |
| 393 | break; /* only allowable wlun commands */ |
| 394 | default: |
| 395 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 396 | printk(KERN_INFO "scsi_debug: Opcode: 0x%x " |
| 397 | "not supported for wlun\n", *cmd); |
| 398 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 399 | INVALID_OPCODE, 0); |
| 400 | errsts = check_condition_result; |
| 401 | return schedule_resp(SCpnt, devip, done, errsts, |
| 402 | 0); |
| 403 | } |
| 404 | } |
| 405 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | switch (*cmd) { |
| 407 | case INQUIRY: /* mandatory, ignore unit attention */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 408 | delay_override = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | errsts = resp_inquiry(SCpnt, target, devip); |
| 410 | break; |
| 411 | case REQUEST_SENSE: /* mandatory, ignore unit attention */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 412 | delay_override = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | errsts = resp_requests(SCpnt, devip); |
| 414 | break; |
| 415 | case REZERO_UNIT: /* actually this is REWIND for SSC */ |
| 416 | case START_STOP: |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 417 | errsts = resp_start_stop(SCpnt, devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | break; |
| 419 | case ALLOW_MEDIUM_REMOVAL: |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 420 | if ((errsts = check_readiness(SCpnt, 1, devip))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | break; |
| 422 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 423 | printk(KERN_INFO "scsi_debug: Medium removal %s\n", |
| 424 | cmd[4] ? "inhibited" : "enabled"); |
| 425 | break; |
| 426 | case SEND_DIAGNOSTIC: /* mandatory */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 427 | errsts = check_readiness(SCpnt, 1, devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | break; |
| 429 | case TEST_UNIT_READY: /* mandatory */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 430 | delay_override = 1; |
| 431 | errsts = check_readiness(SCpnt, 0, devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | break; |
| 433 | case RESERVE: |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 434 | errsts = check_readiness(SCpnt, 1, devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | break; |
| 436 | case RESERVE_10: |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 437 | errsts = check_readiness(SCpnt, 1, devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | break; |
| 439 | case RELEASE: |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 440 | errsts = check_readiness(SCpnt, 1, devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | break; |
| 442 | case RELEASE_10: |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 443 | errsts = check_readiness(SCpnt, 1, devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | break; |
| 445 | case READ_CAPACITY: |
| 446 | errsts = resp_readcap(SCpnt, devip); |
| 447 | break; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 448 | case SERVICE_ACTION_IN: |
| 449 | if (SAI_READ_CAPACITY_16 != cmd[1]) { |
| 450 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 451 | INVALID_OPCODE, 0); |
| 452 | errsts = check_condition_result; |
| 453 | break; |
| 454 | } |
| 455 | errsts = resp_readcap16(SCpnt, devip); |
| 456 | break; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 457 | case MAINTENANCE_IN: |
| 458 | if (MI_REPORT_TARGET_PGS != cmd[1]) { |
| 459 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 460 | INVALID_OPCODE, 0); |
| 461 | errsts = check_condition_result; |
| 462 | break; |
| 463 | } |
| 464 | errsts = resp_report_tgtpgs(SCpnt, devip); |
| 465 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | case READ_16: |
| 467 | case READ_12: |
| 468 | case READ_10: |
| 469 | case READ_6: |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 470 | if ((errsts = check_readiness(SCpnt, 0, devip))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | break; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 472 | if (scsi_debug_fake_rw) |
| 473 | break; |
FUJITA Tomonori | 3de9f94 | 2008-01-23 01:31:59 +0900 | [diff] [blame] | 474 | get_data_transfer_info(cmd, &lba, &num); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 475 | errsts = resp_read(SCpnt, lba, num, devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | if (inj_recovered && (0 == errsts)) { |
| 477 | mk_sense_buffer(devip, RECOVERED_ERROR, |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 478 | THRESHOLD_EXCEEDED, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | errsts = check_condition_result; |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 480 | } else if (inj_transport && (0 == errsts)) { |
| 481 | mk_sense_buffer(devip, ABORTED_COMMAND, |
| 482 | TRANSPORT_PROBLEM, ACK_NAK_TO); |
| 483 | errsts = check_condition_result; |
| 484 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | break; |
| 486 | case REPORT_LUNS: /* mandatory, ignore unit attention */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 487 | delay_override = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 488 | errsts = resp_report_luns(SCpnt, devip); |
| 489 | break; |
| 490 | case VERIFY: /* 10 byte SBC-2 command */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 491 | errsts = check_readiness(SCpnt, 0, devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | break; |
| 493 | case WRITE_16: |
| 494 | case WRITE_12: |
| 495 | case WRITE_10: |
| 496 | case WRITE_6: |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 497 | if ((errsts = check_readiness(SCpnt, 0, devip))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | break; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 499 | if (scsi_debug_fake_rw) |
| 500 | break; |
FUJITA Tomonori | 3de9f94 | 2008-01-23 01:31:59 +0900 | [diff] [blame] | 501 | get_data_transfer_info(cmd, &lba, &num); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 502 | errsts = resp_write(SCpnt, lba, num, devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | if (inj_recovered && (0 == errsts)) { |
| 504 | mk_sense_buffer(devip, RECOVERED_ERROR, |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 505 | THRESHOLD_EXCEEDED, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | errsts = check_condition_result; |
| 507 | } |
| 508 | break; |
| 509 | case MODE_SENSE: |
| 510 | case MODE_SENSE_10: |
| 511 | errsts = resp_mode_sense(SCpnt, target, devip); |
| 512 | break; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 513 | case MODE_SELECT: |
| 514 | errsts = resp_mode_select(SCpnt, 1, devip); |
| 515 | break; |
| 516 | case MODE_SELECT_10: |
| 517 | errsts = resp_mode_select(SCpnt, 0, devip); |
| 518 | break; |
| 519 | case LOG_SENSE: |
| 520 | errsts = resp_log_sense(SCpnt, devip); |
| 521 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 522 | case SYNCHRONIZE_CACHE: |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 523 | delay_override = 1; |
| 524 | errsts = check_readiness(SCpnt, 0, devip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | break; |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 526 | case WRITE_BUFFER: |
| 527 | errsts = check_readiness(SCpnt, 1, devip); |
| 528 | break; |
FUJITA Tomonori | c639d14 | 2008-01-23 01:32:01 +0900 | [diff] [blame] | 529 | case XDWRITEREAD_10: |
| 530 | if (!scsi_bidi_cmnd(SCpnt)) { |
| 531 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 532 | INVALID_FIELD_IN_CDB, 0); |
| 533 | errsts = check_condition_result; |
| 534 | break; |
| 535 | } |
| 536 | |
| 537 | errsts = check_readiness(SCpnt, 0, devip); |
| 538 | if (errsts) |
| 539 | break; |
| 540 | if (scsi_debug_fake_rw) |
| 541 | break; |
| 542 | get_data_transfer_info(cmd, &lba, &num); |
| 543 | errsts = resp_read(SCpnt, lba, num, devip); |
| 544 | if (errsts) |
| 545 | break; |
| 546 | errsts = resp_write(SCpnt, lba, num, devip); |
| 547 | if (errsts) |
| 548 | break; |
| 549 | errsts = resp_xdwriteread(SCpnt, lba, num, devip); |
| 550 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 551 | default: |
| 552 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 553 | printk(KERN_INFO "scsi_debug: Opcode: 0x%x not " |
| 554 | "supported\n", *cmd); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 555 | if ((errsts = check_readiness(SCpnt, 1, devip))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | break; /* Unit attention takes precedence */ |
| 557 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_OPCODE, 0); |
| 558 | errsts = check_condition_result; |
| 559 | break; |
| 560 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 561 | return schedule_resp(SCpnt, devip, done, errsts, |
| 562 | (delay_override ? 0 : scsi_debug_delay)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | } |
| 564 | |
| 565 | static int scsi_debug_ioctl(struct scsi_device *dev, int cmd, void __user *arg) |
| 566 | { |
| 567 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { |
| 568 | printk(KERN_INFO "scsi_debug: ioctl: cmd=0x%x\n", cmd); |
| 569 | } |
| 570 | return -EINVAL; |
| 571 | /* return -ENOTTY; // correct return but upsets fdisk */ |
| 572 | } |
| 573 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 574 | static int check_readiness(struct scsi_cmnd * SCpnt, int reset_only, |
| 575 | struct sdebug_dev_info * devip) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | { |
| 577 | if (devip->reset) { |
| 578 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 579 | printk(KERN_INFO "scsi_debug: Reporting Unit " |
| 580 | "attention: power on reset\n"); |
| 581 | devip->reset = 0; |
| 582 | mk_sense_buffer(devip, UNIT_ATTENTION, POWERON_RESET, 0); |
| 583 | return check_condition_result; |
| 584 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 585 | if ((0 == reset_only) && devip->stopped) { |
| 586 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 587 | printk(KERN_INFO "scsi_debug: Reporting Not " |
| 588 | "ready: initializing command required\n"); |
| 589 | mk_sense_buffer(devip, NOT_READY, LOGICAL_UNIT_NOT_READY, |
| 590 | 0x2); |
| 591 | return check_condition_result; |
| 592 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | return 0; |
| 594 | } |
| 595 | |
| 596 | /* Returns 0 if ok else (DID_ERROR << 16). Sets scp->resid . */ |
| 597 | static int fill_from_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr, |
| 598 | int arr_len) |
| 599 | { |
| 600 | int k, req_len, act_len, len, active; |
| 601 | void * kaddr; |
| 602 | void * kaddr_off; |
FUJITA Tomonori | 072d0bb | 2008-01-23 01:32:00 +0900 | [diff] [blame] | 603 | struct scatterlist *sg; |
| 604 | struct scsi_data_buffer *sdb = scsi_in(scp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | |
FUJITA Tomonori | 072d0bb | 2008-01-23 01:32:00 +0900 | [diff] [blame] | 606 | if (!sdb->length) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | return 0; |
FUJITA Tomonori | 072d0bb | 2008-01-23 01:32:00 +0900 | [diff] [blame] | 608 | if (!sdb->table.sgl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 609 | return (DID_ERROR << 16); |
FUJITA Tomonori | 072d0bb | 2008-01-23 01:32:00 +0900 | [diff] [blame] | 610 | if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_FROM_DEVICE)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | return (DID_ERROR << 16); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | active = 1; |
Jens Axboe | 852e034 | 2007-07-16 10:19:24 +0200 | [diff] [blame] | 613 | req_len = act_len = 0; |
FUJITA Tomonori | 072d0bb | 2008-01-23 01:32:00 +0900 | [diff] [blame] | 614 | for_each_sg(sdb->table.sgl, sg, sdb->table.nents, k) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 615 | if (active) { |
| 616 | kaddr = (unsigned char *) |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 617 | kmap_atomic(sg_page(sg), KM_USER0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | if (NULL == kaddr) |
| 619 | return (DID_ERROR << 16); |
Jens Axboe | 852e034 | 2007-07-16 10:19:24 +0200 | [diff] [blame] | 620 | kaddr_off = (unsigned char *)kaddr + sg->offset; |
| 621 | len = sg->length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | if ((req_len + len) > arr_len) { |
| 623 | active = 0; |
| 624 | len = arr_len - req_len; |
| 625 | } |
| 626 | memcpy(kaddr_off, arr + req_len, len); |
| 627 | kunmap_atomic(kaddr, KM_USER0); |
| 628 | act_len += len; |
| 629 | } |
Jens Axboe | 852e034 | 2007-07-16 10:19:24 +0200 | [diff] [blame] | 630 | req_len += sg->length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 631 | } |
FUJITA Tomonori | 072d0bb | 2008-01-23 01:32:00 +0900 | [diff] [blame] | 632 | if (sdb->resid) |
| 633 | sdb->resid -= act_len; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 634 | else |
FUJITA Tomonori | 072d0bb | 2008-01-23 01:32:00 +0900 | [diff] [blame] | 635 | sdb->resid = req_len - act_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 636 | return 0; |
| 637 | } |
| 638 | |
| 639 | /* Returns number of bytes fetched into 'arr' or -1 if error. */ |
| 640 | static int fetch_to_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr, |
| 641 | int max_arr_len) |
| 642 | { |
| 643 | int k, req_len, len, fin; |
| 644 | void * kaddr; |
| 645 | void * kaddr_off; |
Jens Axboe | 852e034 | 2007-07-16 10:19:24 +0200 | [diff] [blame] | 646 | struct scatterlist * sg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 647 | |
Boaz Harrosh | c73961e | 2007-09-07 06:50:20 +0900 | [diff] [blame] | 648 | if (0 == scsi_bufflen(scp)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 649 | return 0; |
Boaz Harrosh | c73961e | 2007-09-07 06:50:20 +0900 | [diff] [blame] | 650 | if (NULL == scsi_sglist(scp)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 651 | return -1; |
FUJITA Tomonori | 072d0bb | 2008-01-23 01:32:00 +0900 | [diff] [blame] | 652 | if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_TO_DEVICE)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | return -1; |
Jens Axboe | 852e034 | 2007-07-16 10:19:24 +0200 | [diff] [blame] | 654 | req_len = fin = 0; |
Boaz Harrosh | c73961e | 2007-09-07 06:50:20 +0900 | [diff] [blame] | 655 | scsi_for_each_sg(scp, sg, scsi_sg_count(scp), k) { |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 656 | kaddr = (unsigned char *)kmap_atomic(sg_page(sg), KM_USER0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 657 | if (NULL == kaddr) |
| 658 | return -1; |
Jens Axboe | 852e034 | 2007-07-16 10:19:24 +0200 | [diff] [blame] | 659 | kaddr_off = (unsigned char *)kaddr + sg->offset; |
| 660 | len = sg->length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | if ((req_len + len) > max_arr_len) { |
| 662 | len = max_arr_len - req_len; |
| 663 | fin = 1; |
| 664 | } |
| 665 | memcpy(arr + req_len, kaddr_off, len); |
| 666 | kunmap_atomic(kaddr, KM_USER0); |
| 667 | if (fin) |
| 668 | return req_len + len; |
Jens Axboe | 852e034 | 2007-07-16 10:19:24 +0200 | [diff] [blame] | 669 | req_len += sg->length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 670 | } |
| 671 | return req_len; |
| 672 | } |
| 673 | |
| 674 | |
| 675 | static const char * inq_vendor_id = "Linux "; |
| 676 | static const char * inq_product_id = "scsi_debug "; |
| 677 | static const char * inq_product_rev = "0004"; |
| 678 | |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 679 | static int inquiry_evpd_83(unsigned char * arr, int port_group_id, |
| 680 | int target_dev_id, int dev_id_num, |
| 681 | const char * dev_id_str, |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 682 | int dev_id_str_len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 683 | { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 684 | int num, port_a; |
| 685 | char b[32]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 686 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 687 | port_a = target_dev_id + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | /* T10 vendor identifier field format (faked) */ |
| 689 | arr[0] = 0x2; /* ASCII */ |
| 690 | arr[1] = 0x1; |
| 691 | arr[2] = 0x0; |
| 692 | memcpy(&arr[4], inq_vendor_id, 8); |
| 693 | memcpy(&arr[12], inq_product_id, 16); |
| 694 | memcpy(&arr[28], dev_id_str, dev_id_str_len); |
| 695 | num = 8 + 16 + dev_id_str_len; |
| 696 | arr[3] = num; |
| 697 | num += 4; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 698 | if (dev_id_num >= 0) { |
| 699 | /* NAA-5, Logical unit identifier (binary) */ |
| 700 | arr[num++] = 0x1; /* binary (not necessarily sas) */ |
| 701 | arr[num++] = 0x3; /* PIV=0, lu, naa */ |
| 702 | arr[num++] = 0x0; |
| 703 | arr[num++] = 0x8; |
| 704 | arr[num++] = 0x53; /* naa-5 ieee company id=0x333333 (fake) */ |
| 705 | arr[num++] = 0x33; |
| 706 | arr[num++] = 0x33; |
| 707 | arr[num++] = 0x30; |
| 708 | arr[num++] = (dev_id_num >> 24); |
| 709 | arr[num++] = (dev_id_num >> 16) & 0xff; |
| 710 | arr[num++] = (dev_id_num >> 8) & 0xff; |
| 711 | arr[num++] = dev_id_num & 0xff; |
| 712 | /* Target relative port number */ |
| 713 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 714 | arr[num++] = 0x94; /* PIV=1, target port, rel port */ |
| 715 | arr[num++] = 0x0; /* reserved */ |
| 716 | arr[num++] = 0x4; /* length */ |
| 717 | arr[num++] = 0x0; /* reserved */ |
| 718 | arr[num++] = 0x0; /* reserved */ |
| 719 | arr[num++] = 0x0; |
| 720 | arr[num++] = 0x1; /* relative port A */ |
| 721 | } |
| 722 | /* NAA-5, Target port identifier */ |
| 723 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 724 | arr[num++] = 0x93; /* piv=1, target port, naa */ |
| 725 | arr[num++] = 0x0; |
| 726 | arr[num++] = 0x8; |
| 727 | arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ |
| 728 | arr[num++] = 0x22; |
| 729 | arr[num++] = 0x22; |
| 730 | arr[num++] = 0x20; |
| 731 | arr[num++] = (port_a >> 24); |
| 732 | arr[num++] = (port_a >> 16) & 0xff; |
| 733 | arr[num++] = (port_a >> 8) & 0xff; |
| 734 | arr[num++] = port_a & 0xff; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 735 | /* NAA-5, Target port group identifier */ |
| 736 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 737 | arr[num++] = 0x95; /* piv=1, target port group id */ |
| 738 | arr[num++] = 0x0; |
| 739 | arr[num++] = 0x4; |
| 740 | arr[num++] = 0; |
| 741 | arr[num++] = 0; |
| 742 | arr[num++] = (port_group_id >> 8) & 0xff; |
| 743 | arr[num++] = port_group_id & 0xff; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 744 | /* NAA-5, Target device identifier */ |
| 745 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 746 | arr[num++] = 0xa3; /* piv=1, target device, naa */ |
| 747 | arr[num++] = 0x0; |
| 748 | arr[num++] = 0x8; |
| 749 | arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ |
| 750 | arr[num++] = 0x22; |
| 751 | arr[num++] = 0x22; |
| 752 | arr[num++] = 0x20; |
| 753 | arr[num++] = (target_dev_id >> 24); |
| 754 | arr[num++] = (target_dev_id >> 16) & 0xff; |
| 755 | arr[num++] = (target_dev_id >> 8) & 0xff; |
| 756 | arr[num++] = target_dev_id & 0xff; |
| 757 | /* SCSI name string: Target device identifier */ |
| 758 | arr[num++] = 0x63; /* proto=sas, UTF-8 */ |
| 759 | arr[num++] = 0xa8; /* piv=1, target device, SCSI name string */ |
| 760 | arr[num++] = 0x0; |
| 761 | arr[num++] = 24; |
| 762 | memcpy(arr + num, "naa.52222220", 12); |
| 763 | num += 12; |
| 764 | snprintf(b, sizeof(b), "%08X", target_dev_id); |
| 765 | memcpy(arr + num, b, 8); |
| 766 | num += 8; |
| 767 | memset(arr + num, 0, 4); |
| 768 | num += 4; |
| 769 | return num; |
| 770 | } |
| 771 | |
| 772 | |
| 773 | static unsigned char vpd84_data[] = { |
| 774 | /* from 4th byte */ 0x22,0x22,0x22,0x0,0xbb,0x0, |
| 775 | 0x22,0x22,0x22,0x0,0xbb,0x1, |
| 776 | 0x22,0x22,0x22,0x0,0xbb,0x2, |
| 777 | }; |
| 778 | |
| 779 | static int inquiry_evpd_84(unsigned char * arr) |
| 780 | { |
| 781 | memcpy(arr, vpd84_data, sizeof(vpd84_data)); |
| 782 | return sizeof(vpd84_data); |
| 783 | } |
| 784 | |
| 785 | static int inquiry_evpd_85(unsigned char * arr) |
| 786 | { |
| 787 | int num = 0; |
| 788 | const char * na1 = "https://www.kernel.org/config"; |
| 789 | const char * na2 = "http://www.kernel.org/log"; |
| 790 | int plen, olen; |
| 791 | |
| 792 | arr[num++] = 0x1; /* lu, storage config */ |
| 793 | arr[num++] = 0x0; /* reserved */ |
| 794 | arr[num++] = 0x0; |
| 795 | olen = strlen(na1); |
| 796 | plen = olen + 1; |
| 797 | if (plen % 4) |
| 798 | plen = ((plen / 4) + 1) * 4; |
| 799 | arr[num++] = plen; /* length, null termianted, padded */ |
| 800 | memcpy(arr + num, na1, olen); |
| 801 | memset(arr + num + olen, 0, plen - olen); |
| 802 | num += plen; |
| 803 | |
| 804 | arr[num++] = 0x4; /* lu, logging */ |
| 805 | arr[num++] = 0x0; /* reserved */ |
| 806 | arr[num++] = 0x0; |
| 807 | olen = strlen(na2); |
| 808 | plen = olen + 1; |
| 809 | if (plen % 4) |
| 810 | plen = ((plen / 4) + 1) * 4; |
| 811 | arr[num++] = plen; /* length, null terminated, padded */ |
| 812 | memcpy(arr + num, na2, olen); |
| 813 | memset(arr + num + olen, 0, plen - olen); |
| 814 | num += plen; |
| 815 | |
| 816 | return num; |
| 817 | } |
| 818 | |
| 819 | /* SCSI ports VPD page */ |
| 820 | static int inquiry_evpd_88(unsigned char * arr, int target_dev_id) |
| 821 | { |
| 822 | int num = 0; |
| 823 | int port_a, port_b; |
| 824 | |
| 825 | port_a = target_dev_id + 1; |
| 826 | port_b = port_a + 1; |
| 827 | arr[num++] = 0x0; /* reserved */ |
| 828 | arr[num++] = 0x0; /* reserved */ |
| 829 | arr[num++] = 0x0; |
| 830 | arr[num++] = 0x1; /* relative port 1 (primary) */ |
| 831 | memset(arr + num, 0, 6); |
| 832 | num += 6; |
| 833 | arr[num++] = 0x0; |
| 834 | arr[num++] = 12; /* length tp descriptor */ |
| 835 | /* naa-5 target port identifier (A) */ |
| 836 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 837 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ |
| 838 | arr[num++] = 0x0; /* reserved */ |
| 839 | arr[num++] = 0x8; /* length */ |
| 840 | arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ |
| 841 | arr[num++] = 0x22; |
| 842 | arr[num++] = 0x22; |
| 843 | arr[num++] = 0x20; |
| 844 | arr[num++] = (port_a >> 24); |
| 845 | arr[num++] = (port_a >> 16) & 0xff; |
| 846 | arr[num++] = (port_a >> 8) & 0xff; |
| 847 | arr[num++] = port_a & 0xff; |
| 848 | |
| 849 | arr[num++] = 0x0; /* reserved */ |
| 850 | arr[num++] = 0x0; /* reserved */ |
| 851 | arr[num++] = 0x0; |
| 852 | arr[num++] = 0x2; /* relative port 2 (secondary) */ |
| 853 | memset(arr + num, 0, 6); |
| 854 | num += 6; |
| 855 | arr[num++] = 0x0; |
| 856 | arr[num++] = 12; /* length tp descriptor */ |
| 857 | /* naa-5 target port identifier (B) */ |
| 858 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 859 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ |
| 860 | arr[num++] = 0x0; /* reserved */ |
| 861 | arr[num++] = 0x8; /* length */ |
| 862 | arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ |
| 863 | arr[num++] = 0x22; |
| 864 | arr[num++] = 0x22; |
| 865 | arr[num++] = 0x20; |
| 866 | arr[num++] = (port_b >> 24); |
| 867 | arr[num++] = (port_b >> 16) & 0xff; |
| 868 | arr[num++] = (port_b >> 8) & 0xff; |
| 869 | arr[num++] = port_b & 0xff; |
| 870 | |
| 871 | return num; |
| 872 | } |
| 873 | |
| 874 | |
| 875 | static unsigned char vpd89_data[] = { |
| 876 | /* from 4th byte */ 0,0,0,0, |
| 877 | 'l','i','n','u','x',' ',' ',' ', |
| 878 | 'S','A','T',' ','s','c','s','i','_','d','e','b','u','g',' ',' ', |
| 879 | '1','2','3','4', |
| 880 | 0x34,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0, |
| 881 | 0xec,0,0,0, |
| 882 | 0x5a,0xc,0xff,0x3f,0x37,0xc8,0x10,0,0,0,0,0,0x3f,0,0,0, |
| 883 | 0,0,0,0,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x20,0x20,0x20,0x20, |
| 884 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0,0,0,0x40,0x4,0,0x2e,0x33, |
| 885 | 0x38,0x31,0x20,0x20,0x20,0x20,0x54,0x53,0x38,0x33,0x30,0x30,0x33,0x31, |
| 886 | 0x53,0x41, |
| 887 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, |
| 888 | 0x20,0x20, |
| 889 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, |
| 890 | 0x10,0x80, |
| 891 | 0,0,0,0x2f,0,0,0,0x2,0,0x2,0x7,0,0xff,0xff,0x1,0, |
| 892 | 0x3f,0,0xc1,0xff,0x3e,0,0x10,0x1,0xb0,0xf8,0x50,0x9,0,0,0x7,0, |
| 893 | 0x3,0,0x78,0,0x78,0,0xf0,0,0x78,0,0,0,0,0,0,0, |
| 894 | 0,0,0,0,0,0,0,0,0x2,0,0,0,0,0,0,0, |
| 895 | 0x7e,0,0x1b,0,0x6b,0x34,0x1,0x7d,0x3,0x40,0x69,0x34,0x1,0x3c,0x3,0x40, |
| 896 | 0x7f,0x40,0,0,0,0,0xfe,0xfe,0,0,0,0,0,0xfe,0,0, |
| 897 | 0,0,0,0,0,0,0,0,0xb0,0xf8,0x50,0x9,0,0,0,0, |
| 898 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 899 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 900 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 901 | 0x1,0,0xb0,0xf8,0x50,0x9,0xb0,0xf8,0x50,0x9,0x20,0x20,0x2,0,0xb6,0x42, |
| 902 | 0,0x80,0x8a,0,0x6,0x3c,0xa,0x3c,0xff,0xff,0xc6,0x7,0,0x1,0,0x8, |
| 903 | 0xf0,0xf,0,0x10,0x2,0,0x30,0,0,0,0,0,0,0,0x6,0xfe, |
| 904 | 0,0,0x2,0,0x50,0,0x8a,0,0x4f,0x95,0,0,0x21,0,0xb,0, |
| 905 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 906 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 907 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 908 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 909 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 910 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 911 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 912 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 913 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 914 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 915 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 916 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0xa5,0x51, |
| 917 | }; |
| 918 | |
| 919 | static int inquiry_evpd_89(unsigned char * arr) |
| 920 | { |
| 921 | memcpy(arr, vpd89_data, sizeof(vpd89_data)); |
| 922 | return sizeof(vpd89_data); |
| 923 | } |
| 924 | |
| 925 | |
| 926 | static unsigned char vpdb0_data[] = { |
| 927 | /* from 4th byte */ 0,0,0,4, |
| 928 | 0,0,0x4,0, |
| 929 | 0,0,0,64, |
| 930 | }; |
| 931 | |
| 932 | static int inquiry_evpd_b0(unsigned char * arr) |
| 933 | { |
| 934 | memcpy(arr, vpdb0_data, sizeof(vpdb0_data)); |
| 935 | if (sdebug_store_sectors > 0x400) { |
| 936 | arr[4] = (sdebug_store_sectors >> 24) & 0xff; |
| 937 | arr[5] = (sdebug_store_sectors >> 16) & 0xff; |
| 938 | arr[6] = (sdebug_store_sectors >> 8) & 0xff; |
| 939 | arr[7] = sdebug_store_sectors & 0xff; |
| 940 | } |
| 941 | return sizeof(vpdb0_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 942 | } |
| 943 | |
| 944 | |
| 945 | #define SDEBUG_LONG_INQ_SZ 96 |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 946 | #define SDEBUG_MAX_INQ_ARR_SZ 584 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 947 | |
| 948 | static int resp_inquiry(struct scsi_cmnd * scp, int target, |
| 949 | struct sdebug_dev_info * devip) |
| 950 | { |
| 951 | unsigned char pq_pdt; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 952 | unsigned char * arr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 953 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 954 | int alloc_len, n, ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 955 | |
| 956 | alloc_len = (cmd[3] << 8) + cmd[4]; |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 957 | arr = kzalloc(SDEBUG_MAX_INQ_ARR_SZ, GFP_ATOMIC); |
| 958 | if (! arr) |
| 959 | return DID_REQUEUE << 16; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 960 | if (devip->wlun) |
| 961 | pq_pdt = 0x1e; /* present, wlun */ |
| 962 | else if (scsi_debug_no_lun_0 && (0 == devip->lun)) |
| 963 | pq_pdt = 0x7f; /* not present, no device type */ |
| 964 | else |
| 965 | pq_pdt = (scsi_debug_ptype & 0x1f); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 966 | arr[0] = pq_pdt; |
| 967 | if (0x2 & cmd[1]) { /* CMDDT bit set */ |
| 968 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 969 | 0); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 970 | kfree(arr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 971 | return check_condition_result; |
| 972 | } else if (0x1 & cmd[1]) { /* EVPD bit set */ |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 973 | int lu_id_num, port_group_id, target_dev_id, len; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 974 | char lu_id_str[6]; |
| 975 | int host_no = devip->sdbg_host->shost->host_no; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 976 | |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 977 | port_group_id = (((host_no + 1) & 0x7f) << 8) + |
| 978 | (devip->channel & 0x7f); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 979 | if (0 == scsi_debug_vpd_use_hostno) |
| 980 | host_no = 0; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 981 | lu_id_num = devip->wlun ? -1 : (((host_no + 1) * 2000) + |
| 982 | (devip->target * 1000) + devip->lun); |
| 983 | target_dev_id = ((host_no + 1) * 2000) + |
| 984 | (devip->target * 1000) - 3; |
| 985 | len = scnprintf(lu_id_str, 6, "%d", lu_id_num); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 986 | if (0 == cmd[2]) { /* supported vital product data pages */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 987 | arr[1] = cmd[2]; /*sanity */ |
| 988 | n = 4; |
| 989 | arr[n++] = 0x0; /* this page */ |
| 990 | arr[n++] = 0x80; /* unit serial number */ |
| 991 | arr[n++] = 0x83; /* device identification */ |
| 992 | arr[n++] = 0x84; /* software interface ident. */ |
| 993 | arr[n++] = 0x85; /* management network addresses */ |
| 994 | arr[n++] = 0x86; /* extended inquiry */ |
| 995 | arr[n++] = 0x87; /* mode page policy */ |
| 996 | arr[n++] = 0x88; /* SCSI ports */ |
| 997 | arr[n++] = 0x89; /* ATA information */ |
| 998 | arr[n++] = 0xb0; /* Block limits (SBC) */ |
| 999 | arr[3] = n - 4; /* number of supported VPD pages */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1000 | } else if (0x80 == cmd[2]) { /* unit serial number */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1001 | arr[1] = cmd[2]; /*sanity */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1002 | arr[3] = len; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1003 | memcpy(&arr[4], lu_id_str, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1004 | } else if (0x83 == cmd[2]) { /* device identification */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1005 | arr[1] = cmd[2]; /*sanity */ |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1006 | arr[3] = inquiry_evpd_83(&arr[4], port_group_id, |
| 1007 | target_dev_id, lu_id_num, |
| 1008 | lu_id_str, len); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1009 | } else if (0x84 == cmd[2]) { /* Software interface ident. */ |
| 1010 | arr[1] = cmd[2]; /*sanity */ |
| 1011 | arr[3] = inquiry_evpd_84(&arr[4]); |
| 1012 | } else if (0x85 == cmd[2]) { /* Management network addresses */ |
| 1013 | arr[1] = cmd[2]; /*sanity */ |
| 1014 | arr[3] = inquiry_evpd_85(&arr[4]); |
| 1015 | } else if (0x86 == cmd[2]) { /* extended inquiry */ |
| 1016 | arr[1] = cmd[2]; /*sanity */ |
| 1017 | arr[3] = 0x3c; /* number of following entries */ |
| 1018 | arr[4] = 0x0; /* no protection stuff */ |
| 1019 | arr[5] = 0x7; /* head of q, ordered + simple q's */ |
| 1020 | } else if (0x87 == cmd[2]) { /* mode page policy */ |
| 1021 | arr[1] = cmd[2]; /*sanity */ |
| 1022 | arr[3] = 0x8; /* number of following entries */ |
| 1023 | arr[4] = 0x2; /* disconnect-reconnect mp */ |
| 1024 | arr[6] = 0x80; /* mlus, shared */ |
| 1025 | arr[8] = 0x18; /* protocol specific lu */ |
| 1026 | arr[10] = 0x82; /* mlus, per initiator port */ |
| 1027 | } else if (0x88 == cmd[2]) { /* SCSI Ports */ |
| 1028 | arr[1] = cmd[2]; /*sanity */ |
| 1029 | arr[3] = inquiry_evpd_88(&arr[4], target_dev_id); |
| 1030 | } else if (0x89 == cmd[2]) { /* ATA information */ |
| 1031 | arr[1] = cmd[2]; /*sanity */ |
| 1032 | n = inquiry_evpd_89(&arr[4]); |
| 1033 | arr[2] = (n >> 8); |
| 1034 | arr[3] = (n & 0xff); |
| 1035 | } else if (0xb0 == cmd[2]) { /* Block limits (SBC) */ |
| 1036 | arr[1] = cmd[2]; /*sanity */ |
| 1037 | arr[3] = inquiry_evpd_b0(&arr[4]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1038 | } else { |
| 1039 | /* Illegal request, invalid field in cdb */ |
| 1040 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1041 | INVALID_FIELD_IN_CDB, 0); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1042 | kfree(arr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1043 | return check_condition_result; |
| 1044 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1045 | len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1046 | ret = fill_from_dev_buffer(scp, arr, |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1047 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1048 | kfree(arr); |
| 1049 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1050 | } |
| 1051 | /* drops through here for a standard inquiry */ |
| 1052 | arr[1] = DEV_REMOVEABLE(target) ? 0x80 : 0; /* Removable disk */ |
| 1053 | arr[2] = scsi_debug_scsi_level; |
| 1054 | arr[3] = 2; /* response_data_format==2 */ |
| 1055 | arr[4] = SDEBUG_LONG_INQ_SZ - 5; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1056 | if (0 == scsi_debug_vpd_use_hostno) |
| 1057 | arr[5] = 0x10; /* claim: implicit TGPS */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1058 | arr[6] = 0x10; /* claim: MultiP */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1059 | /* arr[6] |= 0x40; ... claim: EncServ (enclosure services) */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1060 | arr[7] = 0xa; /* claim: LINKED + CMDQUE */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1061 | memcpy(&arr[8], inq_vendor_id, 8); |
| 1062 | memcpy(&arr[16], inq_product_id, 16); |
| 1063 | memcpy(&arr[32], inq_product_rev, 4); |
| 1064 | /* version descriptors (2 bytes each) follow */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1065 | arr[58] = 0x0; arr[59] = 0x77; /* SAM-3 ANSI */ |
| 1066 | arr[60] = 0x3; arr[61] = 0x14; /* SPC-3 ANSI */ |
| 1067 | n = 62; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1068 | if (scsi_debug_ptype == 0) { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1069 | arr[n++] = 0x3; arr[n++] = 0x3d; /* SBC-2 ANSI */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1070 | } else if (scsi_debug_ptype == 1) { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1071 | arr[n++] = 0x3; arr[n++] = 0x60; /* SSC-2 no version */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1072 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1073 | arr[n++] = 0xc; arr[n++] = 0xf; /* SAS-1.1 rev 10 */ |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1074 | ret = fill_from_dev_buffer(scp, arr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1075 | min(alloc_len, SDEBUG_LONG_INQ_SZ)); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1076 | kfree(arr); |
| 1077 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1078 | } |
| 1079 | |
| 1080 | static int resp_requests(struct scsi_cmnd * scp, |
| 1081 | struct sdebug_dev_info * devip) |
| 1082 | { |
| 1083 | unsigned char * sbuff; |
| 1084 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 1085 | unsigned char arr[SDEBUG_SENSE_LEN]; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1086 | int want_dsense; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1087 | int len = 18; |
| 1088 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1089 | memset(arr, 0, sizeof(arr)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1090 | if (devip->reset == 1) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1091 | mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0); |
| 1092 | want_dsense = !!(cmd[1] & 1) || scsi_debug_dsense; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1093 | sbuff = devip->sense_buff; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1094 | if ((iec_m_pg[2] & 0x4) && (6 == (iec_m_pg[3] & 0xf))) { |
| 1095 | if (want_dsense) { |
| 1096 | arr[0] = 0x72; |
| 1097 | arr[1] = 0x0; /* NO_SENSE in sense_key */ |
| 1098 | arr[2] = THRESHOLD_EXCEEDED; |
| 1099 | arr[3] = 0xff; /* TEST set and MRIE==6 */ |
| 1100 | } else { |
| 1101 | arr[0] = 0x70; |
| 1102 | arr[2] = 0x0; /* NO_SENSE in sense_key */ |
| 1103 | arr[7] = 0xa; /* 18 byte sense buffer */ |
| 1104 | arr[12] = THRESHOLD_EXCEEDED; |
| 1105 | arr[13] = 0xff; /* TEST set and MRIE==6 */ |
| 1106 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1107 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1108 | memcpy(arr, sbuff, SDEBUG_SENSE_LEN); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1109 | if ((cmd[1] & 1) && (! scsi_debug_dsense)) { |
| 1110 | /* DESC bit set and sense_buff in fixed format */ |
| 1111 | memset(arr, 0, sizeof(arr)); |
| 1112 | arr[0] = 0x72; |
| 1113 | arr[1] = sbuff[2]; /* sense key */ |
| 1114 | arr[2] = sbuff[12]; /* asc */ |
| 1115 | arr[3] = sbuff[13]; /* ascq */ |
| 1116 | len = 8; |
| 1117 | } |
| 1118 | } |
| 1119 | mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1120 | return fill_from_dev_buffer(scp, arr, len); |
| 1121 | } |
| 1122 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1123 | static int resp_start_stop(struct scsi_cmnd * scp, |
| 1124 | struct sdebug_dev_info * devip) |
| 1125 | { |
| 1126 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 1127 | int power_cond, errsts, start; |
| 1128 | |
| 1129 | if ((errsts = check_readiness(scp, 1, devip))) |
| 1130 | return errsts; |
| 1131 | power_cond = (cmd[4] & 0xf0) >> 4; |
| 1132 | if (power_cond) { |
| 1133 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 1134 | 0); |
| 1135 | return check_condition_result; |
| 1136 | } |
| 1137 | start = cmd[4] & 1; |
| 1138 | if (start == devip->stopped) |
| 1139 | devip->stopped = !start; |
| 1140 | return 0; |
| 1141 | } |
| 1142 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1143 | #define SDEBUG_READCAP_ARR_SZ 8 |
| 1144 | static int resp_readcap(struct scsi_cmnd * scp, |
| 1145 | struct sdebug_dev_info * devip) |
| 1146 | { |
| 1147 | unsigned char arr[SDEBUG_READCAP_ARR_SZ]; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1148 | unsigned int capac; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1149 | int errsts; |
| 1150 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1151 | if ((errsts = check_readiness(scp, 1, devip))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1152 | return errsts; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1153 | /* following just in case virtual_gb changed */ |
| 1154 | if (scsi_debug_virtual_gb > 0) { |
| 1155 | sdebug_capacity = 2048 * 1024; |
| 1156 | sdebug_capacity *= scsi_debug_virtual_gb; |
| 1157 | } else |
| 1158 | sdebug_capacity = sdebug_store_sectors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1159 | memset(arr, 0, SDEBUG_READCAP_ARR_SZ); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1160 | if (sdebug_capacity < 0xffffffff) { |
| 1161 | capac = (unsigned int)sdebug_capacity - 1; |
| 1162 | arr[0] = (capac >> 24); |
| 1163 | arr[1] = (capac >> 16) & 0xff; |
| 1164 | arr[2] = (capac >> 8) & 0xff; |
| 1165 | arr[3] = capac & 0xff; |
| 1166 | } else { |
| 1167 | arr[0] = 0xff; |
| 1168 | arr[1] = 0xff; |
| 1169 | arr[2] = 0xff; |
| 1170 | arr[3] = 0xff; |
| 1171 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1172 | arr[6] = (SECT_SIZE_PER(target) >> 8) & 0xff; |
| 1173 | arr[7] = SECT_SIZE_PER(target) & 0xff; |
| 1174 | return fill_from_dev_buffer(scp, arr, SDEBUG_READCAP_ARR_SZ); |
| 1175 | } |
| 1176 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1177 | #define SDEBUG_READCAP16_ARR_SZ 32 |
| 1178 | static int resp_readcap16(struct scsi_cmnd * scp, |
| 1179 | struct sdebug_dev_info * devip) |
| 1180 | { |
| 1181 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 1182 | unsigned char arr[SDEBUG_READCAP16_ARR_SZ]; |
| 1183 | unsigned long long capac; |
| 1184 | int errsts, k, alloc_len; |
| 1185 | |
| 1186 | if ((errsts = check_readiness(scp, 1, devip))) |
| 1187 | return errsts; |
| 1188 | alloc_len = ((cmd[10] << 24) + (cmd[11] << 16) + (cmd[12] << 8) |
| 1189 | + cmd[13]); |
| 1190 | /* following just in case virtual_gb changed */ |
| 1191 | if (scsi_debug_virtual_gb > 0) { |
| 1192 | sdebug_capacity = 2048 * 1024; |
| 1193 | sdebug_capacity *= scsi_debug_virtual_gb; |
| 1194 | } else |
| 1195 | sdebug_capacity = sdebug_store_sectors; |
| 1196 | memset(arr, 0, SDEBUG_READCAP16_ARR_SZ); |
| 1197 | capac = sdebug_capacity - 1; |
| 1198 | for (k = 0; k < 8; ++k, capac >>= 8) |
| 1199 | arr[7 - k] = capac & 0xff; |
| 1200 | arr[8] = (SECT_SIZE_PER(target) >> 24) & 0xff; |
| 1201 | arr[9] = (SECT_SIZE_PER(target) >> 16) & 0xff; |
| 1202 | arr[10] = (SECT_SIZE_PER(target) >> 8) & 0xff; |
| 1203 | arr[11] = SECT_SIZE_PER(target) & 0xff; |
| 1204 | return fill_from_dev_buffer(scp, arr, |
| 1205 | min(alloc_len, SDEBUG_READCAP16_ARR_SZ)); |
| 1206 | } |
| 1207 | |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1208 | #define SDEBUG_MAX_TGTPGS_ARR_SZ 1412 |
| 1209 | |
| 1210 | static int resp_report_tgtpgs(struct scsi_cmnd * scp, |
| 1211 | struct sdebug_dev_info * devip) |
| 1212 | { |
| 1213 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 1214 | unsigned char * arr; |
| 1215 | int host_no = devip->sdbg_host->shost->host_no; |
| 1216 | int n, ret, alen, rlen; |
| 1217 | int port_group_a, port_group_b, port_a, port_b; |
| 1218 | |
| 1219 | alen = ((cmd[6] << 24) + (cmd[7] << 16) + (cmd[8] << 8) |
| 1220 | + cmd[9]); |
| 1221 | |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 1222 | arr = kzalloc(SDEBUG_MAX_TGTPGS_ARR_SZ, GFP_ATOMIC); |
| 1223 | if (! arr) |
| 1224 | return DID_REQUEUE << 16; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1225 | /* |
| 1226 | * EVPD page 0x88 states we have two ports, one |
| 1227 | * real and a fake port with no device connected. |
| 1228 | * So we create two port groups with one port each |
| 1229 | * and set the group with port B to unavailable. |
| 1230 | */ |
| 1231 | port_a = 0x1; /* relative port A */ |
| 1232 | port_b = 0x2; /* relative port B */ |
| 1233 | port_group_a = (((host_no + 1) & 0x7f) << 8) + |
| 1234 | (devip->channel & 0x7f); |
| 1235 | port_group_b = (((host_no + 1) & 0x7f) << 8) + |
| 1236 | (devip->channel & 0x7f) + 0x80; |
| 1237 | |
| 1238 | /* |
| 1239 | * The asymmetric access state is cycled according to the host_id. |
| 1240 | */ |
| 1241 | n = 4; |
| 1242 | if (0 == scsi_debug_vpd_use_hostno) { |
| 1243 | arr[n++] = host_no % 3; /* Asymm access state */ |
| 1244 | arr[n++] = 0x0F; /* claim: all states are supported */ |
| 1245 | } else { |
| 1246 | arr[n++] = 0x0; /* Active/Optimized path */ |
| 1247 | arr[n++] = 0x01; /* claim: only support active/optimized paths */ |
| 1248 | } |
| 1249 | arr[n++] = (port_group_a >> 8) & 0xff; |
| 1250 | arr[n++] = port_group_a & 0xff; |
| 1251 | arr[n++] = 0; /* Reserved */ |
| 1252 | arr[n++] = 0; /* Status code */ |
| 1253 | arr[n++] = 0; /* Vendor unique */ |
| 1254 | arr[n++] = 0x1; /* One port per group */ |
| 1255 | arr[n++] = 0; /* Reserved */ |
| 1256 | arr[n++] = 0; /* Reserved */ |
| 1257 | arr[n++] = (port_a >> 8) & 0xff; |
| 1258 | arr[n++] = port_a & 0xff; |
| 1259 | arr[n++] = 3; /* Port unavailable */ |
| 1260 | arr[n++] = 0x08; /* claim: only unavailalbe paths are supported */ |
| 1261 | arr[n++] = (port_group_b >> 8) & 0xff; |
| 1262 | arr[n++] = port_group_b & 0xff; |
| 1263 | arr[n++] = 0; /* Reserved */ |
| 1264 | arr[n++] = 0; /* Status code */ |
| 1265 | arr[n++] = 0; /* Vendor unique */ |
| 1266 | arr[n++] = 0x1; /* One port per group */ |
| 1267 | arr[n++] = 0; /* Reserved */ |
| 1268 | arr[n++] = 0; /* Reserved */ |
| 1269 | arr[n++] = (port_b >> 8) & 0xff; |
| 1270 | arr[n++] = port_b & 0xff; |
| 1271 | |
| 1272 | rlen = n - 4; |
| 1273 | arr[0] = (rlen >> 24) & 0xff; |
| 1274 | arr[1] = (rlen >> 16) & 0xff; |
| 1275 | arr[2] = (rlen >> 8) & 0xff; |
| 1276 | arr[3] = rlen & 0xff; |
| 1277 | |
| 1278 | /* |
| 1279 | * Return the smallest value of either |
| 1280 | * - The allocated length |
| 1281 | * - The constructed command length |
| 1282 | * - The maximum array size |
| 1283 | */ |
| 1284 | rlen = min(alen,n); |
| 1285 | ret = fill_from_dev_buffer(scp, arr, |
| 1286 | min(rlen, SDEBUG_MAX_TGTPGS_ARR_SZ)); |
| 1287 | kfree(arr); |
| 1288 | return ret; |
| 1289 | } |
| 1290 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1291 | /* <<Following mode page info copied from ST318451LW>> */ |
| 1292 | |
| 1293 | static int resp_err_recov_pg(unsigned char * p, int pcontrol, int target) |
| 1294 | { /* Read-Write Error Recovery page for mode_sense */ |
| 1295 | unsigned char err_recov_pg[] = {0x1, 0xa, 0xc0, 11, 240, 0, 0, 0, |
| 1296 | 5, 0, 0xff, 0xff}; |
| 1297 | |
| 1298 | memcpy(p, err_recov_pg, sizeof(err_recov_pg)); |
| 1299 | if (1 == pcontrol) |
| 1300 | memset(p + 2, 0, sizeof(err_recov_pg) - 2); |
| 1301 | return sizeof(err_recov_pg); |
| 1302 | } |
| 1303 | |
| 1304 | static int resp_disconnect_pg(unsigned char * p, int pcontrol, int target) |
| 1305 | { /* Disconnect-Reconnect page for mode_sense */ |
| 1306 | unsigned char disconnect_pg[] = {0x2, 0xe, 128, 128, 0, 10, 0, 0, |
| 1307 | 0, 0, 0, 0, 0, 0, 0, 0}; |
| 1308 | |
| 1309 | memcpy(p, disconnect_pg, sizeof(disconnect_pg)); |
| 1310 | if (1 == pcontrol) |
| 1311 | memset(p + 2, 0, sizeof(disconnect_pg) - 2); |
| 1312 | return sizeof(disconnect_pg); |
| 1313 | } |
| 1314 | |
| 1315 | static int resp_format_pg(unsigned char * p, int pcontrol, int target) |
| 1316 | { /* Format device page for mode_sense */ |
| 1317 | unsigned char format_pg[] = {0x3, 0x16, 0, 0, 0, 0, 0, 0, |
| 1318 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 1319 | 0, 0, 0, 0, 0x40, 0, 0, 0}; |
| 1320 | |
| 1321 | memcpy(p, format_pg, sizeof(format_pg)); |
| 1322 | p[10] = (sdebug_sectors_per >> 8) & 0xff; |
| 1323 | p[11] = sdebug_sectors_per & 0xff; |
| 1324 | p[12] = (SECT_SIZE >> 8) & 0xff; |
| 1325 | p[13] = SECT_SIZE & 0xff; |
| 1326 | if (DEV_REMOVEABLE(target)) |
| 1327 | p[20] |= 0x20; /* should agree with INQUIRY */ |
| 1328 | if (1 == pcontrol) |
| 1329 | memset(p + 2, 0, sizeof(format_pg) - 2); |
| 1330 | return sizeof(format_pg); |
| 1331 | } |
| 1332 | |
| 1333 | static int resp_caching_pg(unsigned char * p, int pcontrol, int target) |
| 1334 | { /* Caching page for mode_sense */ |
| 1335 | unsigned char caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0, |
| 1336 | 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, 0, 0, 0, 0}; |
| 1337 | |
| 1338 | memcpy(p, caching_pg, sizeof(caching_pg)); |
| 1339 | if (1 == pcontrol) |
| 1340 | memset(p + 2, 0, sizeof(caching_pg) - 2); |
| 1341 | return sizeof(caching_pg); |
| 1342 | } |
| 1343 | |
| 1344 | static int resp_ctrl_m_pg(unsigned char * p, int pcontrol, int target) |
| 1345 | { /* Control mode page for mode_sense */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1346 | unsigned char ch_ctrl_m_pg[] = {/* 0xa, 10, */ 0x6, 0, 0, 0, 0, 0, |
| 1347 | 0, 0, 0, 0}; |
| 1348 | 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] | 1349 | 0, 0, 0x2, 0x4b}; |
| 1350 | |
| 1351 | if (scsi_debug_dsense) |
| 1352 | ctrl_m_pg[2] |= 0x4; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1353 | else |
| 1354 | ctrl_m_pg[2] &= ~0x4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1355 | memcpy(p, ctrl_m_pg, sizeof(ctrl_m_pg)); |
| 1356 | if (1 == pcontrol) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1357 | memcpy(p + 2, ch_ctrl_m_pg, sizeof(ch_ctrl_m_pg)); |
| 1358 | else if (2 == pcontrol) |
| 1359 | memcpy(p, d_ctrl_m_pg, sizeof(d_ctrl_m_pg)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1360 | return sizeof(ctrl_m_pg); |
| 1361 | } |
| 1362 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1363 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1364 | static int resp_iec_m_pg(unsigned char * p, int pcontrol, int target) |
| 1365 | { /* Informational Exceptions control mode page for mode_sense */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1366 | unsigned char ch_iec_m_pg[] = {/* 0x1c, 0xa, */ 0x4, 0xf, 0, 0, 0, 0, |
| 1367 | 0, 0, 0x0, 0x0}; |
| 1368 | unsigned char d_iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, |
| 1369 | 0, 0, 0x0, 0x0}; |
| 1370 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1371 | memcpy(p, iec_m_pg, sizeof(iec_m_pg)); |
| 1372 | if (1 == pcontrol) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1373 | memcpy(p + 2, ch_iec_m_pg, sizeof(ch_iec_m_pg)); |
| 1374 | else if (2 == pcontrol) |
| 1375 | memcpy(p, d_iec_m_pg, sizeof(d_iec_m_pg)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1376 | return sizeof(iec_m_pg); |
| 1377 | } |
| 1378 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1379 | static int resp_sas_sf_m_pg(unsigned char * p, int pcontrol, int target) |
| 1380 | { /* SAS SSP mode page - short format for mode_sense */ |
| 1381 | unsigned char sas_sf_m_pg[] = {0x19, 0x6, |
| 1382 | 0x6, 0x0, 0x7, 0xd0, 0x0, 0x0}; |
| 1383 | |
| 1384 | memcpy(p, sas_sf_m_pg, sizeof(sas_sf_m_pg)); |
| 1385 | if (1 == pcontrol) |
| 1386 | memset(p + 2, 0, sizeof(sas_sf_m_pg) - 2); |
| 1387 | return sizeof(sas_sf_m_pg); |
| 1388 | } |
| 1389 | |
| 1390 | |
| 1391 | static int resp_sas_pcd_m_spg(unsigned char * p, int pcontrol, int target, |
| 1392 | int target_dev_id) |
| 1393 | { /* SAS phy control and discover mode page for mode_sense */ |
| 1394 | unsigned char sas_pcd_m_pg[] = {0x59, 0x1, 0, 0x64, 0, 0x6, 0, 2, |
| 1395 | 0, 0, 0, 0, 0x10, 0x9, 0x8, 0x0, |
| 1396 | 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, |
| 1397 | 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, |
| 1398 | 0x2, 0, 0, 0, 0, 0, 0, 0, |
| 1399 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, |
| 1400 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 1401 | 0, 1, 0, 0, 0x10, 0x9, 0x8, 0x0, |
| 1402 | 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, |
| 1403 | 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, |
| 1404 | 0x3, 0, 0, 0, 0, 0, 0, 0, |
| 1405 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, |
| 1406 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 1407 | }; |
| 1408 | int port_a, port_b; |
| 1409 | |
| 1410 | port_a = target_dev_id + 1; |
| 1411 | port_b = port_a + 1; |
| 1412 | memcpy(p, sas_pcd_m_pg, sizeof(sas_pcd_m_pg)); |
| 1413 | p[20] = (port_a >> 24); |
| 1414 | p[21] = (port_a >> 16) & 0xff; |
| 1415 | p[22] = (port_a >> 8) & 0xff; |
| 1416 | p[23] = port_a & 0xff; |
| 1417 | p[48 + 20] = (port_b >> 24); |
| 1418 | p[48 + 21] = (port_b >> 16) & 0xff; |
| 1419 | p[48 + 22] = (port_b >> 8) & 0xff; |
| 1420 | p[48 + 23] = port_b & 0xff; |
| 1421 | if (1 == pcontrol) |
| 1422 | memset(p + 4, 0, sizeof(sas_pcd_m_pg) - 4); |
| 1423 | return sizeof(sas_pcd_m_pg); |
| 1424 | } |
| 1425 | |
| 1426 | static int resp_sas_sha_m_spg(unsigned char * p, int pcontrol) |
| 1427 | { /* SAS SSP shared protocol specific port mode subpage */ |
| 1428 | unsigned char sas_sha_m_pg[] = {0x59, 0x2, 0, 0xc, 0, 0x6, 0x10, 0, |
| 1429 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 1430 | }; |
| 1431 | |
| 1432 | memcpy(p, sas_sha_m_pg, sizeof(sas_sha_m_pg)); |
| 1433 | if (1 == pcontrol) |
| 1434 | memset(p + 4, 0, sizeof(sas_sha_m_pg) - 4); |
| 1435 | return sizeof(sas_sha_m_pg); |
| 1436 | } |
| 1437 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1438 | #define SDEBUG_MAX_MSENSE_SZ 256 |
| 1439 | |
| 1440 | static int resp_mode_sense(struct scsi_cmnd * scp, int target, |
| 1441 | struct sdebug_dev_info * devip) |
| 1442 | { |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1443 | unsigned char dbd, llbaa; |
| 1444 | int pcontrol, pcode, subpcode, bd_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1445 | unsigned char dev_spec; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1446 | int k, alloc_len, msense_6, offset, len, errsts, target_dev_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1447 | unsigned char * ap; |
| 1448 | unsigned char arr[SDEBUG_MAX_MSENSE_SZ]; |
| 1449 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 1450 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1451 | if ((errsts = check_readiness(scp, 1, devip))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1452 | return errsts; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1453 | dbd = !!(cmd[1] & 0x8); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1454 | pcontrol = (cmd[2] & 0xc0) >> 6; |
| 1455 | pcode = cmd[2] & 0x3f; |
| 1456 | subpcode = cmd[3]; |
| 1457 | msense_6 = (MODE_SENSE == cmd[0]); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1458 | llbaa = msense_6 ? 0 : !!(cmd[1] & 0x10); |
| 1459 | if ((0 == scsi_debug_ptype) && (0 == dbd)) |
| 1460 | bd_len = llbaa ? 16 : 8; |
| 1461 | else |
| 1462 | bd_len = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1463 | alloc_len = msense_6 ? cmd[4] : ((cmd[7] << 8) | cmd[8]); |
| 1464 | memset(arr, 0, SDEBUG_MAX_MSENSE_SZ); |
| 1465 | if (0x3 == pcontrol) { /* Saving values not supported */ |
| 1466 | mk_sense_buffer(devip, ILLEGAL_REQUEST, SAVING_PARAMS_UNSUP, |
| 1467 | 0); |
| 1468 | return check_condition_result; |
| 1469 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1470 | target_dev_id = ((devip->sdbg_host->shost->host_no + 1) * 2000) + |
| 1471 | (devip->target * 1000) - 3; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1472 | /* set DPOFUA bit for disks */ |
| 1473 | if (0 == scsi_debug_ptype) |
| 1474 | dev_spec = (DEV_READONLY(target) ? 0x80 : 0x0) | 0x10; |
| 1475 | else |
| 1476 | dev_spec = 0x0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1477 | if (msense_6) { |
| 1478 | arr[2] = dev_spec; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1479 | arr[3] = bd_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1480 | offset = 4; |
| 1481 | } else { |
| 1482 | arr[3] = dev_spec; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1483 | if (16 == bd_len) |
| 1484 | arr[4] = 0x1; /* set LONGLBA bit */ |
| 1485 | arr[7] = bd_len; /* assume 255 or less */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1486 | offset = 8; |
| 1487 | } |
| 1488 | ap = arr + offset; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1489 | if ((bd_len > 0) && (0 == sdebug_capacity)) { |
| 1490 | if (scsi_debug_virtual_gb > 0) { |
| 1491 | sdebug_capacity = 2048 * 1024; |
| 1492 | sdebug_capacity *= scsi_debug_virtual_gb; |
| 1493 | } else |
| 1494 | sdebug_capacity = sdebug_store_sectors; |
| 1495 | } |
| 1496 | if (8 == bd_len) { |
| 1497 | if (sdebug_capacity > 0xfffffffe) { |
| 1498 | ap[0] = 0xff; |
| 1499 | ap[1] = 0xff; |
| 1500 | ap[2] = 0xff; |
| 1501 | ap[3] = 0xff; |
| 1502 | } else { |
| 1503 | ap[0] = (sdebug_capacity >> 24) & 0xff; |
| 1504 | ap[1] = (sdebug_capacity >> 16) & 0xff; |
| 1505 | ap[2] = (sdebug_capacity >> 8) & 0xff; |
| 1506 | ap[3] = sdebug_capacity & 0xff; |
| 1507 | } |
| 1508 | ap[6] = (SECT_SIZE_PER(target) >> 8) & 0xff; |
| 1509 | ap[7] = SECT_SIZE_PER(target) & 0xff; |
| 1510 | offset += bd_len; |
| 1511 | ap = arr + offset; |
| 1512 | } else if (16 == bd_len) { |
| 1513 | unsigned long long capac = sdebug_capacity; |
| 1514 | |
| 1515 | for (k = 0; k < 8; ++k, capac >>= 8) |
| 1516 | ap[7 - k] = capac & 0xff; |
| 1517 | ap[12] = (SECT_SIZE_PER(target) >> 24) & 0xff; |
| 1518 | ap[13] = (SECT_SIZE_PER(target) >> 16) & 0xff; |
| 1519 | ap[14] = (SECT_SIZE_PER(target) >> 8) & 0xff; |
| 1520 | ap[15] = SECT_SIZE_PER(target) & 0xff; |
| 1521 | offset += bd_len; |
| 1522 | ap = arr + offset; |
| 1523 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1524 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1525 | if ((subpcode > 0x0) && (subpcode < 0xff) && (0x19 != pcode)) { |
| 1526 | /* TODO: Control Extension page */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1527 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 1528 | 0); |
| 1529 | return check_condition_result; |
| 1530 | } |
| 1531 | switch (pcode) { |
| 1532 | case 0x1: /* Read-Write error recovery page, direct access */ |
| 1533 | len = resp_err_recov_pg(ap, pcontrol, target); |
| 1534 | offset += len; |
| 1535 | break; |
| 1536 | case 0x2: /* Disconnect-Reconnect page, all devices */ |
| 1537 | len = resp_disconnect_pg(ap, pcontrol, target); |
| 1538 | offset += len; |
| 1539 | break; |
| 1540 | case 0x3: /* Format device page, direct access */ |
| 1541 | len = resp_format_pg(ap, pcontrol, target); |
| 1542 | offset += len; |
| 1543 | break; |
| 1544 | case 0x8: /* Caching page, direct access */ |
| 1545 | len = resp_caching_pg(ap, pcontrol, target); |
| 1546 | offset += len; |
| 1547 | break; |
| 1548 | case 0xa: /* Control Mode page, all devices */ |
| 1549 | len = resp_ctrl_m_pg(ap, pcontrol, target); |
| 1550 | offset += len; |
| 1551 | break; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1552 | case 0x19: /* if spc==1 then sas phy, control+discover */ |
| 1553 | if ((subpcode > 0x2) && (subpcode < 0xff)) { |
| 1554 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1555 | INVALID_FIELD_IN_CDB, 0); |
| 1556 | return check_condition_result; |
| 1557 | } |
| 1558 | len = 0; |
| 1559 | if ((0x0 == subpcode) || (0xff == subpcode)) |
| 1560 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); |
| 1561 | if ((0x1 == subpcode) || (0xff == subpcode)) |
| 1562 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, target, |
| 1563 | target_dev_id); |
| 1564 | if ((0x2 == subpcode) || (0xff == subpcode)) |
| 1565 | len += resp_sas_sha_m_spg(ap + len, pcontrol); |
| 1566 | offset += len; |
| 1567 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1568 | case 0x1c: /* Informational Exceptions Mode page, all devices */ |
| 1569 | len = resp_iec_m_pg(ap, pcontrol, target); |
| 1570 | offset += len; |
| 1571 | break; |
| 1572 | case 0x3f: /* Read all Mode pages */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1573 | if ((0 == subpcode) || (0xff == subpcode)) { |
| 1574 | len = resp_err_recov_pg(ap, pcontrol, target); |
| 1575 | len += resp_disconnect_pg(ap + len, pcontrol, target); |
| 1576 | len += resp_format_pg(ap + len, pcontrol, target); |
| 1577 | len += resp_caching_pg(ap + len, pcontrol, target); |
| 1578 | len += resp_ctrl_m_pg(ap + len, pcontrol, target); |
| 1579 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); |
| 1580 | if (0xff == subpcode) { |
| 1581 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, |
| 1582 | target, target_dev_id); |
| 1583 | len += resp_sas_sha_m_spg(ap + len, pcontrol); |
| 1584 | } |
| 1585 | len += resp_iec_m_pg(ap + len, pcontrol, target); |
| 1586 | } else { |
| 1587 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1588 | INVALID_FIELD_IN_CDB, 0); |
| 1589 | return check_condition_result; |
| 1590 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1591 | offset += len; |
| 1592 | break; |
| 1593 | default: |
| 1594 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 1595 | 0); |
| 1596 | return check_condition_result; |
| 1597 | } |
| 1598 | if (msense_6) |
| 1599 | arr[0] = offset - 1; |
| 1600 | else { |
| 1601 | arr[0] = ((offset - 2) >> 8) & 0xff; |
| 1602 | arr[1] = (offset - 2) & 0xff; |
| 1603 | } |
| 1604 | return fill_from_dev_buffer(scp, arr, min(alloc_len, offset)); |
| 1605 | } |
| 1606 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1607 | #define SDEBUG_MAX_MSELECT_SZ 512 |
| 1608 | |
| 1609 | static int resp_mode_select(struct scsi_cmnd * scp, int mselect6, |
| 1610 | struct sdebug_dev_info * devip) |
| 1611 | { |
| 1612 | int pf, sp, ps, md_len, bd_len, off, spf, pg_len; |
| 1613 | int param_len, res, errsts, mpage; |
| 1614 | unsigned char arr[SDEBUG_MAX_MSELECT_SZ]; |
| 1615 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 1616 | |
| 1617 | if ((errsts = check_readiness(scp, 1, devip))) |
| 1618 | return errsts; |
| 1619 | memset(arr, 0, sizeof(arr)); |
| 1620 | pf = cmd[1] & 0x10; |
| 1621 | sp = cmd[1] & 0x1; |
| 1622 | param_len = mselect6 ? cmd[4] : ((cmd[7] << 8) + cmd[8]); |
| 1623 | if ((0 == pf) || sp || (param_len > SDEBUG_MAX_MSELECT_SZ)) { |
| 1624 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1625 | INVALID_FIELD_IN_CDB, 0); |
| 1626 | return check_condition_result; |
| 1627 | } |
| 1628 | res = fetch_to_dev_buffer(scp, arr, param_len); |
| 1629 | if (-1 == res) |
| 1630 | return (DID_ERROR << 16); |
| 1631 | else if ((res < param_len) && |
| 1632 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) |
| 1633 | printk(KERN_INFO "scsi_debug: mode_select: cdb indicated=%d, " |
| 1634 | " IO sent=%d bytes\n", param_len, res); |
| 1635 | md_len = mselect6 ? (arr[0] + 1) : ((arr[0] << 8) + arr[1] + 2); |
| 1636 | bd_len = mselect6 ? arr[3] : ((arr[6] << 8) + arr[7]); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1637 | if (md_len > 2) { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1638 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1639 | INVALID_FIELD_IN_PARAM_LIST, 0); |
| 1640 | return check_condition_result; |
| 1641 | } |
| 1642 | off = bd_len + (mselect6 ? 4 : 8); |
| 1643 | mpage = arr[off] & 0x3f; |
| 1644 | ps = !!(arr[off] & 0x80); |
| 1645 | if (ps) { |
| 1646 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1647 | INVALID_FIELD_IN_PARAM_LIST, 0); |
| 1648 | return check_condition_result; |
| 1649 | } |
| 1650 | spf = !!(arr[off] & 0x40); |
| 1651 | pg_len = spf ? ((arr[off + 2] << 8) + arr[off + 3] + 4) : |
| 1652 | (arr[off + 1] + 2); |
| 1653 | if ((pg_len + off) > param_len) { |
| 1654 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1655 | PARAMETER_LIST_LENGTH_ERR, 0); |
| 1656 | return check_condition_result; |
| 1657 | } |
| 1658 | switch (mpage) { |
| 1659 | case 0xa: /* Control Mode page */ |
| 1660 | if (ctrl_m_pg[1] == arr[off + 1]) { |
| 1661 | memcpy(ctrl_m_pg + 2, arr + off + 2, |
| 1662 | sizeof(ctrl_m_pg) - 2); |
| 1663 | scsi_debug_dsense = !!(ctrl_m_pg[2] & 0x4); |
| 1664 | return 0; |
| 1665 | } |
| 1666 | break; |
| 1667 | case 0x1c: /* Informational Exceptions Mode page */ |
| 1668 | if (iec_m_pg[1] == arr[off + 1]) { |
| 1669 | memcpy(iec_m_pg + 2, arr + off + 2, |
| 1670 | sizeof(iec_m_pg) - 2); |
| 1671 | return 0; |
| 1672 | } |
| 1673 | break; |
| 1674 | default: |
| 1675 | break; |
| 1676 | } |
| 1677 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1678 | INVALID_FIELD_IN_PARAM_LIST, 0); |
| 1679 | return check_condition_result; |
| 1680 | } |
| 1681 | |
| 1682 | static int resp_temp_l_pg(unsigned char * arr) |
| 1683 | { |
| 1684 | unsigned char temp_l_pg[] = {0x0, 0x0, 0x3, 0x2, 0x0, 38, |
| 1685 | 0x0, 0x1, 0x3, 0x2, 0x0, 65, |
| 1686 | }; |
| 1687 | |
| 1688 | memcpy(arr, temp_l_pg, sizeof(temp_l_pg)); |
| 1689 | return sizeof(temp_l_pg); |
| 1690 | } |
| 1691 | |
| 1692 | static int resp_ie_l_pg(unsigned char * arr) |
| 1693 | { |
| 1694 | unsigned char ie_l_pg[] = {0x0, 0x0, 0x3, 0x3, 0x0, 0x0, 38, |
| 1695 | }; |
| 1696 | |
| 1697 | memcpy(arr, ie_l_pg, sizeof(ie_l_pg)); |
| 1698 | if (iec_m_pg[2] & 0x4) { /* TEST bit set */ |
| 1699 | arr[4] = THRESHOLD_EXCEEDED; |
| 1700 | arr[5] = 0xff; |
| 1701 | } |
| 1702 | return sizeof(ie_l_pg); |
| 1703 | } |
| 1704 | |
| 1705 | #define SDEBUG_MAX_LSENSE_SZ 512 |
| 1706 | |
| 1707 | static int resp_log_sense(struct scsi_cmnd * scp, |
| 1708 | struct sdebug_dev_info * devip) |
| 1709 | { |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1710 | int ppc, sp, pcontrol, pcode, subpcode, alloc_len, errsts, len, n; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1711 | unsigned char arr[SDEBUG_MAX_LSENSE_SZ]; |
| 1712 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 1713 | |
| 1714 | if ((errsts = check_readiness(scp, 1, devip))) |
| 1715 | return errsts; |
| 1716 | memset(arr, 0, sizeof(arr)); |
| 1717 | ppc = cmd[1] & 0x2; |
| 1718 | sp = cmd[1] & 0x1; |
| 1719 | if (ppc || sp) { |
| 1720 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1721 | INVALID_FIELD_IN_CDB, 0); |
| 1722 | return check_condition_result; |
| 1723 | } |
| 1724 | pcontrol = (cmd[2] & 0xc0) >> 6; |
| 1725 | pcode = cmd[2] & 0x3f; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1726 | subpcode = cmd[3] & 0xff; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1727 | alloc_len = (cmd[7] << 8) + cmd[8]; |
| 1728 | arr[0] = pcode; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1729 | if (0 == subpcode) { |
| 1730 | switch (pcode) { |
| 1731 | case 0x0: /* Supported log pages log page */ |
| 1732 | n = 4; |
| 1733 | arr[n++] = 0x0; /* this page */ |
| 1734 | arr[n++] = 0xd; /* Temperature */ |
| 1735 | arr[n++] = 0x2f; /* Informational exceptions */ |
| 1736 | arr[3] = n - 4; |
| 1737 | break; |
| 1738 | case 0xd: /* Temperature log page */ |
| 1739 | arr[3] = resp_temp_l_pg(arr + 4); |
| 1740 | break; |
| 1741 | case 0x2f: /* Informational exceptions log page */ |
| 1742 | arr[3] = resp_ie_l_pg(arr + 4); |
| 1743 | break; |
| 1744 | default: |
| 1745 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1746 | INVALID_FIELD_IN_CDB, 0); |
| 1747 | return check_condition_result; |
| 1748 | } |
| 1749 | } else if (0xff == subpcode) { |
| 1750 | arr[0] |= 0x40; |
| 1751 | arr[1] = subpcode; |
| 1752 | switch (pcode) { |
| 1753 | case 0x0: /* Supported log pages and subpages log page */ |
| 1754 | n = 4; |
| 1755 | arr[n++] = 0x0; |
| 1756 | arr[n++] = 0x0; /* 0,0 page */ |
| 1757 | arr[n++] = 0x0; |
| 1758 | arr[n++] = 0xff; /* this page */ |
| 1759 | arr[n++] = 0xd; |
| 1760 | arr[n++] = 0x0; /* Temperature */ |
| 1761 | arr[n++] = 0x2f; |
| 1762 | arr[n++] = 0x0; /* Informational exceptions */ |
| 1763 | arr[3] = n - 4; |
| 1764 | break; |
| 1765 | case 0xd: /* Temperature subpages */ |
| 1766 | n = 4; |
| 1767 | arr[n++] = 0xd; |
| 1768 | arr[n++] = 0x0; /* Temperature */ |
| 1769 | arr[3] = n - 4; |
| 1770 | break; |
| 1771 | case 0x2f: /* Informational exceptions subpages */ |
| 1772 | n = 4; |
| 1773 | arr[n++] = 0x2f; |
| 1774 | arr[n++] = 0x0; /* Informational exceptions */ |
| 1775 | arr[3] = n - 4; |
| 1776 | break; |
| 1777 | default: |
| 1778 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1779 | INVALID_FIELD_IN_CDB, 0); |
| 1780 | return check_condition_result; |
| 1781 | } |
| 1782 | } else { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1783 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1784 | INVALID_FIELD_IN_CDB, 0); |
| 1785 | return check_condition_result; |
| 1786 | } |
| 1787 | len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); |
| 1788 | return fill_from_dev_buffer(scp, arr, |
| 1789 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); |
| 1790 | } |
| 1791 | |
| 1792 | static int resp_read(struct scsi_cmnd * SCpnt, unsigned long long lba, |
| 1793 | unsigned int num, struct sdebug_dev_info * devip) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1794 | { |
| 1795 | unsigned long iflags; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1796 | unsigned int block, from_bottom; |
| 1797 | unsigned long long u; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1798 | int ret; |
| 1799 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1800 | if (lba + num > sdebug_capacity) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1801 | mk_sense_buffer(devip, ILLEGAL_REQUEST, ADDR_OUT_OF_RANGE, |
| 1802 | 0); |
| 1803 | return check_condition_result; |
| 1804 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1805 | /* transfer length excessive (tie in to block limits VPD page) */ |
| 1806 | if (num > sdebug_store_sectors) { |
| 1807 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 1808 | 0); |
| 1809 | return check_condition_result; |
| 1810 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1811 | if ((SCSI_DEBUG_OPT_MEDIUM_ERR & scsi_debug_opts) && |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1812 | (lba <= OPT_MEDIUM_ERR_ADDR) && |
| 1813 | ((lba + num) > OPT_MEDIUM_ERR_ADDR)) { |
| 1814 | /* claim unrecoverable read error */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1815 | mk_sense_buffer(devip, MEDIUM_ERROR, UNRECOVERED_READ_ERR, |
| 1816 | 0); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1817 | /* set info field and valid bit for fixed descriptor */ |
| 1818 | if (0x70 == (devip->sense_buff[0] & 0x7f)) { |
| 1819 | devip->sense_buff[0] |= 0x80; /* Valid bit */ |
| 1820 | ret = OPT_MEDIUM_ERR_ADDR; |
| 1821 | devip->sense_buff[3] = (ret >> 24) & 0xff; |
| 1822 | devip->sense_buff[4] = (ret >> 16) & 0xff; |
| 1823 | devip->sense_buff[5] = (ret >> 8) & 0xff; |
| 1824 | devip->sense_buff[6] = ret & 0xff; |
| 1825 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1826 | return check_condition_result; |
| 1827 | } |
| 1828 | read_lock_irqsave(&atomic_rw, iflags); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1829 | if ((lba + num) <= sdebug_store_sectors) |
| 1830 | ret = fill_from_dev_buffer(SCpnt, |
| 1831 | fake_storep + (lba * SECT_SIZE), |
| 1832 | num * SECT_SIZE); |
| 1833 | else { |
| 1834 | /* modulo when one arg is 64 bits needs do_div() */ |
| 1835 | u = lba; |
| 1836 | block = do_div(u, sdebug_store_sectors); |
| 1837 | from_bottom = 0; |
| 1838 | if ((block + num) > sdebug_store_sectors) |
| 1839 | from_bottom = (block + num) - sdebug_store_sectors; |
| 1840 | ret = fill_from_dev_buffer(SCpnt, |
| 1841 | fake_storep + (block * SECT_SIZE), |
| 1842 | (num - from_bottom) * SECT_SIZE); |
| 1843 | if ((0 == ret) && (from_bottom > 0)) |
| 1844 | ret = fill_from_dev_buffer(SCpnt, fake_storep, |
| 1845 | from_bottom * SECT_SIZE); |
| 1846 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1847 | read_unlock_irqrestore(&atomic_rw, iflags); |
| 1848 | return ret; |
| 1849 | } |
| 1850 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1851 | static int resp_write(struct scsi_cmnd * SCpnt, unsigned long long lba, |
| 1852 | unsigned int num, struct sdebug_dev_info * devip) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1853 | { |
| 1854 | unsigned long iflags; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1855 | unsigned int block, to_bottom; |
| 1856 | unsigned long long u; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1857 | int res; |
| 1858 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1859 | if (lba + num > sdebug_capacity) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1860 | mk_sense_buffer(devip, ILLEGAL_REQUEST, ADDR_OUT_OF_RANGE, |
| 1861 | 0); |
| 1862 | return check_condition_result; |
| 1863 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1864 | /* transfer length excessive (tie in to block limits VPD page) */ |
| 1865 | if (num > sdebug_store_sectors) { |
| 1866 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 1867 | 0); |
| 1868 | return check_condition_result; |
| 1869 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1870 | |
| 1871 | write_lock_irqsave(&atomic_rw, iflags); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1872 | if ((lba + num) <= sdebug_store_sectors) |
| 1873 | res = fetch_to_dev_buffer(SCpnt, |
| 1874 | fake_storep + (lba * SECT_SIZE), |
| 1875 | num * SECT_SIZE); |
| 1876 | else { |
| 1877 | /* modulo when one arg is 64 bits needs do_div() */ |
| 1878 | u = lba; |
| 1879 | block = do_div(u, sdebug_store_sectors); |
| 1880 | to_bottom = 0; |
| 1881 | if ((block + num) > sdebug_store_sectors) |
| 1882 | to_bottom = (block + num) - sdebug_store_sectors; |
| 1883 | res = fetch_to_dev_buffer(SCpnt, |
| 1884 | fake_storep + (block * SECT_SIZE), |
| 1885 | (num - to_bottom) * SECT_SIZE); |
| 1886 | if ((0 == res) && (to_bottom > 0)) |
| 1887 | res = fetch_to_dev_buffer(SCpnt, fake_storep, |
| 1888 | to_bottom * SECT_SIZE); |
| 1889 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1890 | write_unlock_irqrestore(&atomic_rw, iflags); |
| 1891 | if (-1 == res) |
| 1892 | return (DID_ERROR << 16); |
| 1893 | else if ((res < (num * SECT_SIZE)) && |
| 1894 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1895 | printk(KERN_INFO "scsi_debug: write: cdb indicated=%u, " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1896 | " IO sent=%d bytes\n", num * SECT_SIZE, res); |
| 1897 | return 0; |
| 1898 | } |
| 1899 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1900 | #define SDEBUG_RLUN_ARR_SZ 256 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1901 | |
| 1902 | static int resp_report_luns(struct scsi_cmnd * scp, |
| 1903 | struct sdebug_dev_info * devip) |
| 1904 | { |
| 1905 | unsigned int alloc_len; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1906 | int lun_cnt, i, upper, num, n, wlun, lun; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1907 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 1908 | int select_report = (int)cmd[2]; |
| 1909 | struct scsi_lun *one_lun; |
| 1910 | unsigned char arr[SDEBUG_RLUN_ARR_SZ]; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1911 | unsigned char * max_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1912 | |
| 1913 | 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] | 1914 | if ((alloc_len < 4) || (select_report > 2)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1915 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 1916 | 0); |
| 1917 | return check_condition_result; |
| 1918 | } |
| 1919 | /* can produce response with up to 16k luns (lun 0 to lun 16383) */ |
| 1920 | memset(arr, 0, SDEBUG_RLUN_ARR_SZ); |
| 1921 | lun_cnt = scsi_debug_max_luns; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1922 | if (1 == select_report) |
| 1923 | lun_cnt = 0; |
| 1924 | else if (scsi_debug_no_lun_0 && (lun_cnt > 0)) |
| 1925 | --lun_cnt; |
| 1926 | wlun = (select_report > 0) ? 1 : 0; |
| 1927 | num = lun_cnt + wlun; |
| 1928 | arr[2] = ((sizeof(struct scsi_lun) * num) >> 8) & 0xff; |
| 1929 | arr[3] = (sizeof(struct scsi_lun) * num) & 0xff; |
| 1930 | n = min((int)((SDEBUG_RLUN_ARR_SZ - 8) / |
| 1931 | sizeof(struct scsi_lun)), num); |
| 1932 | if (n < num) { |
| 1933 | wlun = 0; |
| 1934 | lun_cnt = n; |
| 1935 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1936 | one_lun = (struct scsi_lun *) &arr[8]; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1937 | max_addr = arr + SDEBUG_RLUN_ARR_SZ; |
| 1938 | for (i = 0, lun = (scsi_debug_no_lun_0 ? 1 : 0); |
| 1939 | ((i < lun_cnt) && ((unsigned char *)(one_lun + i) < max_addr)); |
| 1940 | i++, lun++) { |
| 1941 | upper = (lun >> 8) & 0x3f; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1942 | if (upper) |
| 1943 | one_lun[i].scsi_lun[0] = |
| 1944 | (upper | (SAM2_LUN_ADDRESS_METHOD << 6)); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1945 | one_lun[i].scsi_lun[1] = lun & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1946 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1947 | if (wlun) { |
| 1948 | one_lun[i].scsi_lun[0] = (SAM2_WLUN_REPORT_LUNS >> 8) & 0xff; |
| 1949 | one_lun[i].scsi_lun[1] = SAM2_WLUN_REPORT_LUNS & 0xff; |
| 1950 | i++; |
| 1951 | } |
| 1952 | alloc_len = (unsigned char *)(one_lun + i) - arr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1953 | return fill_from_dev_buffer(scp, arr, |
| 1954 | min((int)alloc_len, SDEBUG_RLUN_ARR_SZ)); |
| 1955 | } |
| 1956 | |
FUJITA Tomonori | c639d14 | 2008-01-23 01:32:01 +0900 | [diff] [blame] | 1957 | static int resp_xdwriteread(struct scsi_cmnd *scp, unsigned long long lba, |
| 1958 | unsigned int num, struct sdebug_dev_info *devip) |
| 1959 | { |
| 1960 | int i, j, ret = -1; |
| 1961 | unsigned char *kaddr, *buf; |
| 1962 | unsigned int offset; |
| 1963 | struct scatterlist *sg; |
| 1964 | struct scsi_data_buffer *sdb = scsi_in(scp); |
| 1965 | |
| 1966 | /* better not to use temporary buffer. */ |
| 1967 | buf = kmalloc(scsi_bufflen(scp), GFP_ATOMIC); |
| 1968 | if (!buf) |
| 1969 | return ret; |
| 1970 | |
| 1971 | offset = 0; |
| 1972 | scsi_for_each_sg(scp, sg, scsi_sg_count(scp), i) { |
| 1973 | kaddr = (unsigned char *)kmap_atomic(sg_page(sg), KM_USER0); |
| 1974 | if (!kaddr) |
| 1975 | goto out; |
| 1976 | |
| 1977 | memcpy(buf + offset, kaddr + sg->offset, sg->length); |
| 1978 | offset += sg->length; |
| 1979 | kunmap_atomic(kaddr, KM_USER0); |
| 1980 | } |
| 1981 | |
| 1982 | offset = 0; |
| 1983 | for_each_sg(sdb->table.sgl, sg, sdb->table.nents, i) { |
| 1984 | kaddr = (unsigned char *)kmap_atomic(sg_page(sg), KM_USER0); |
| 1985 | if (!kaddr) |
| 1986 | goto out; |
| 1987 | |
| 1988 | for (j = 0; j < sg->length; j++) |
| 1989 | *(kaddr + sg->offset + j) ^= *(buf + offset + j); |
| 1990 | |
| 1991 | offset += sg->length; |
| 1992 | kunmap_atomic(kaddr, KM_USER0); |
| 1993 | } |
| 1994 | ret = 0; |
| 1995 | out: |
| 1996 | kfree(buf); |
| 1997 | |
| 1998 | return ret; |
| 1999 | } |
| 2000 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2001 | /* When timer goes off this function is called. */ |
| 2002 | static void timer_intr_handler(unsigned long indx) |
| 2003 | { |
| 2004 | struct sdebug_queued_cmd * sqcp; |
| 2005 | unsigned long iflags; |
| 2006 | |
| 2007 | if (indx >= SCSI_DEBUG_CANQUEUE) { |
| 2008 | printk(KERN_ERR "scsi_debug:timer_intr_handler: indx too " |
| 2009 | "large\n"); |
| 2010 | return; |
| 2011 | } |
| 2012 | spin_lock_irqsave(&queued_arr_lock, iflags); |
| 2013 | sqcp = &queued_arr[(int)indx]; |
| 2014 | if (! sqcp->in_use) { |
| 2015 | printk(KERN_ERR "scsi_debug:timer_intr_handler: Unexpected " |
| 2016 | "interrupt\n"); |
| 2017 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 2018 | return; |
| 2019 | } |
| 2020 | sqcp->in_use = 0; |
| 2021 | if (sqcp->done_funct) { |
| 2022 | sqcp->a_cmnd->result = sqcp->scsi_result; |
| 2023 | sqcp->done_funct(sqcp->a_cmnd); /* callback to mid level */ |
| 2024 | } |
| 2025 | sqcp->done_funct = NULL; |
| 2026 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 2027 | } |
| 2028 | |
| 2029 | static int scsi_debug_slave_alloc(struct scsi_device * sdp) |
| 2030 | { |
| 2031 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2032 | printk(KERN_INFO "scsi_debug: slave_alloc <%u %u %u %u>\n", |
| 2033 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
FUJITA Tomonori | c639d14 | 2008-01-23 01:32:01 +0900 | [diff] [blame] | 2034 | set_bit(QUEUE_FLAG_BIDI, &sdp->request_queue->queue_flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2035 | return 0; |
| 2036 | } |
| 2037 | |
| 2038 | static int scsi_debug_slave_configure(struct scsi_device * sdp) |
| 2039 | { |
| 2040 | struct sdebug_dev_info * devip; |
| 2041 | |
| 2042 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2043 | printk(KERN_INFO "scsi_debug: slave_configure <%u %u %u %u>\n", |
| 2044 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2045 | if (sdp->host->max_cmd_len != SCSI_DEBUG_MAX_CMD_LEN) |
| 2046 | sdp->host->max_cmd_len = SCSI_DEBUG_MAX_CMD_LEN; |
| 2047 | devip = devInfoReg(sdp); |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 2048 | if (NULL == devip) |
| 2049 | return 1; /* no resources, will be marked offline */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2050 | sdp->hostdata = devip; |
| 2051 | if (sdp->host->cmd_per_lun) |
| 2052 | scsi_adjust_queue_depth(sdp, SDEBUG_TAGGED_QUEUING, |
| 2053 | sdp->host->cmd_per_lun); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2054 | blk_queue_max_segment_size(sdp->request_queue, 256 * 1024); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2055 | return 0; |
| 2056 | } |
| 2057 | |
| 2058 | static void scsi_debug_slave_destroy(struct scsi_device * sdp) |
| 2059 | { |
| 2060 | struct sdebug_dev_info * devip = |
| 2061 | (struct sdebug_dev_info *)sdp->hostdata; |
| 2062 | |
| 2063 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2064 | printk(KERN_INFO "scsi_debug: slave_destroy <%u %u %u %u>\n", |
| 2065 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2066 | if (devip) { |
| 2067 | /* make this slot avaliable for re-use */ |
| 2068 | devip->used = 0; |
| 2069 | sdp->hostdata = NULL; |
| 2070 | } |
| 2071 | } |
| 2072 | |
| 2073 | static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev) |
| 2074 | { |
| 2075 | struct sdebug_host_info * sdbg_host; |
| 2076 | struct sdebug_dev_info * open_devip = NULL; |
| 2077 | struct sdebug_dev_info * devip = |
| 2078 | (struct sdebug_dev_info *)sdev->hostdata; |
| 2079 | |
| 2080 | if (devip) |
| 2081 | return devip; |
| 2082 | sdbg_host = *(struct sdebug_host_info **) sdev->host->hostdata; |
| 2083 | if(! sdbg_host) { |
| 2084 | printk(KERN_ERR "Host info NULL\n"); |
| 2085 | return NULL; |
| 2086 | } |
| 2087 | list_for_each_entry(devip, &sdbg_host->dev_info_list, dev_list) { |
| 2088 | if ((devip->used) && (devip->channel == sdev->channel) && |
| 2089 | (devip->target == sdev->id) && |
| 2090 | (devip->lun == sdev->lun)) |
| 2091 | return devip; |
| 2092 | else { |
| 2093 | if ((!devip->used) && (!open_devip)) |
| 2094 | open_devip = devip; |
| 2095 | } |
| 2096 | } |
| 2097 | if (NULL == open_devip) { /* try and make a new one */ |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 2098 | open_devip = kzalloc(sizeof(*open_devip),GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2099 | if (NULL == open_devip) { |
| 2100 | printk(KERN_ERR "%s: out of memory at line %d\n", |
| 2101 | __FUNCTION__, __LINE__); |
| 2102 | return NULL; |
| 2103 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2104 | open_devip->sdbg_host = sdbg_host; |
| 2105 | list_add_tail(&open_devip->dev_list, |
| 2106 | &sdbg_host->dev_info_list); |
| 2107 | } |
| 2108 | if (open_devip) { |
| 2109 | open_devip->channel = sdev->channel; |
| 2110 | open_devip->target = sdev->id; |
| 2111 | open_devip->lun = sdev->lun; |
| 2112 | open_devip->sdbg_host = sdbg_host; |
| 2113 | open_devip->reset = 1; |
| 2114 | open_devip->used = 1; |
| 2115 | memset(open_devip->sense_buff, 0, SDEBUG_SENSE_LEN); |
| 2116 | if (scsi_debug_dsense) |
| 2117 | open_devip->sense_buff[0] = 0x72; |
| 2118 | else { |
| 2119 | open_devip->sense_buff[0] = 0x70; |
| 2120 | open_devip->sense_buff[7] = 0xa; |
| 2121 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2122 | if (sdev->lun == SAM2_WLUN_REPORT_LUNS) |
| 2123 | open_devip->wlun = SAM2_WLUN_REPORT_LUNS & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2124 | return open_devip; |
| 2125 | } |
| 2126 | return NULL; |
| 2127 | } |
| 2128 | |
| 2129 | static void mk_sense_buffer(struct sdebug_dev_info * devip, int key, |
| 2130 | int asc, int asq) |
| 2131 | { |
| 2132 | unsigned char * sbuff; |
| 2133 | |
| 2134 | sbuff = devip->sense_buff; |
| 2135 | memset(sbuff, 0, SDEBUG_SENSE_LEN); |
| 2136 | if (scsi_debug_dsense) { |
| 2137 | sbuff[0] = 0x72; /* descriptor, current */ |
| 2138 | sbuff[1] = key; |
| 2139 | sbuff[2] = asc; |
| 2140 | sbuff[3] = asq; |
| 2141 | } else { |
| 2142 | sbuff[0] = 0x70; /* fixed, current */ |
| 2143 | sbuff[2] = key; |
| 2144 | sbuff[7] = 0xa; /* implies 18 byte sense buffer */ |
| 2145 | sbuff[12] = asc; |
| 2146 | sbuff[13] = asq; |
| 2147 | } |
| 2148 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 2149 | printk(KERN_INFO "scsi_debug: [sense_key,asc,ascq]: " |
| 2150 | "[0x%x,0x%x,0x%x]\n", key, asc, asq); |
| 2151 | } |
| 2152 | |
| 2153 | static int scsi_debug_abort(struct scsi_cmnd * SCpnt) |
| 2154 | { |
| 2155 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 2156 | printk(KERN_INFO "scsi_debug: abort\n"); |
| 2157 | ++num_aborts; |
| 2158 | stop_queued_cmnd(SCpnt); |
| 2159 | return SUCCESS; |
| 2160 | } |
| 2161 | |
| 2162 | static int scsi_debug_biosparam(struct scsi_device *sdev, |
| 2163 | struct block_device * bdev, sector_t capacity, int *info) |
| 2164 | { |
| 2165 | int res; |
| 2166 | unsigned char *buf; |
| 2167 | |
| 2168 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 2169 | printk(KERN_INFO "scsi_debug: biosparam\n"); |
| 2170 | buf = scsi_bios_ptable(bdev); |
| 2171 | if (buf) { |
| 2172 | res = scsi_partsize(buf, capacity, |
| 2173 | &info[2], &info[0], &info[1]); |
| 2174 | kfree(buf); |
| 2175 | if (! res) |
| 2176 | return res; |
| 2177 | } |
| 2178 | info[0] = sdebug_heads; |
| 2179 | info[1] = sdebug_sectors_per; |
| 2180 | info[2] = sdebug_cylinders_per; |
| 2181 | return 0; |
| 2182 | } |
| 2183 | |
| 2184 | static int scsi_debug_device_reset(struct scsi_cmnd * SCpnt) |
| 2185 | { |
| 2186 | struct sdebug_dev_info * devip; |
| 2187 | |
| 2188 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 2189 | printk(KERN_INFO "scsi_debug: device_reset\n"); |
| 2190 | ++num_dev_resets; |
| 2191 | if (SCpnt) { |
| 2192 | devip = devInfoReg(SCpnt->device); |
| 2193 | if (devip) |
| 2194 | devip->reset = 1; |
| 2195 | } |
| 2196 | return SUCCESS; |
| 2197 | } |
| 2198 | |
| 2199 | static int scsi_debug_bus_reset(struct scsi_cmnd * SCpnt) |
| 2200 | { |
| 2201 | struct sdebug_host_info *sdbg_host; |
| 2202 | struct sdebug_dev_info * dev_info; |
| 2203 | struct scsi_device * sdp; |
| 2204 | struct Scsi_Host * hp; |
| 2205 | |
| 2206 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 2207 | printk(KERN_INFO "scsi_debug: bus_reset\n"); |
| 2208 | ++num_bus_resets; |
| 2209 | if (SCpnt && ((sdp = SCpnt->device)) && ((hp = sdp->host))) { |
| 2210 | sdbg_host = *(struct sdebug_host_info **) hp->hostdata; |
| 2211 | if (sdbg_host) { |
| 2212 | list_for_each_entry(dev_info, |
| 2213 | &sdbg_host->dev_info_list, |
| 2214 | dev_list) |
| 2215 | dev_info->reset = 1; |
| 2216 | } |
| 2217 | } |
| 2218 | return SUCCESS; |
| 2219 | } |
| 2220 | |
| 2221 | static int scsi_debug_host_reset(struct scsi_cmnd * SCpnt) |
| 2222 | { |
| 2223 | struct sdebug_host_info * sdbg_host; |
| 2224 | struct sdebug_dev_info * dev_info; |
| 2225 | |
| 2226 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 2227 | printk(KERN_INFO "scsi_debug: host_reset\n"); |
| 2228 | ++num_host_resets; |
| 2229 | spin_lock(&sdebug_host_list_lock); |
| 2230 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { |
| 2231 | list_for_each_entry(dev_info, &sdbg_host->dev_info_list, |
| 2232 | dev_list) |
| 2233 | dev_info->reset = 1; |
| 2234 | } |
| 2235 | spin_unlock(&sdebug_host_list_lock); |
| 2236 | stop_all_queued(); |
| 2237 | return SUCCESS; |
| 2238 | } |
| 2239 | |
| 2240 | /* Returns 1 if found 'cmnd' and deleted its timer. else returns 0 */ |
| 2241 | static int stop_queued_cmnd(struct scsi_cmnd * cmnd) |
| 2242 | { |
| 2243 | unsigned long iflags; |
| 2244 | int k; |
| 2245 | struct sdebug_queued_cmd * sqcp; |
| 2246 | |
| 2247 | spin_lock_irqsave(&queued_arr_lock, iflags); |
| 2248 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { |
| 2249 | sqcp = &queued_arr[k]; |
| 2250 | if (sqcp->in_use && (cmnd == sqcp->a_cmnd)) { |
| 2251 | del_timer_sync(&sqcp->cmnd_timer); |
| 2252 | sqcp->in_use = 0; |
| 2253 | sqcp->a_cmnd = NULL; |
| 2254 | break; |
| 2255 | } |
| 2256 | } |
| 2257 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 2258 | return (k < SCSI_DEBUG_CANQUEUE) ? 1 : 0; |
| 2259 | } |
| 2260 | |
| 2261 | /* Deletes (stops) timers of all queued commands */ |
| 2262 | static void stop_all_queued(void) |
| 2263 | { |
| 2264 | unsigned long iflags; |
| 2265 | int k; |
| 2266 | struct sdebug_queued_cmd * sqcp; |
| 2267 | |
| 2268 | spin_lock_irqsave(&queued_arr_lock, iflags); |
| 2269 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { |
| 2270 | sqcp = &queued_arr[k]; |
| 2271 | if (sqcp->in_use && sqcp->a_cmnd) { |
| 2272 | del_timer_sync(&sqcp->cmnd_timer); |
| 2273 | sqcp->in_use = 0; |
| 2274 | sqcp->a_cmnd = NULL; |
| 2275 | } |
| 2276 | } |
| 2277 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 2278 | } |
| 2279 | |
| 2280 | /* Initializes timers in queued array */ |
| 2281 | static void __init init_all_queued(void) |
| 2282 | { |
| 2283 | unsigned long iflags; |
| 2284 | int k; |
| 2285 | struct sdebug_queued_cmd * sqcp; |
| 2286 | |
| 2287 | spin_lock_irqsave(&queued_arr_lock, iflags); |
| 2288 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { |
| 2289 | sqcp = &queued_arr[k]; |
| 2290 | init_timer(&sqcp->cmnd_timer); |
| 2291 | sqcp->in_use = 0; |
| 2292 | sqcp->a_cmnd = NULL; |
| 2293 | } |
| 2294 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 2295 | } |
| 2296 | |
| 2297 | static void __init sdebug_build_parts(unsigned char * ramp) |
| 2298 | { |
| 2299 | struct partition * pp; |
| 2300 | int starts[SDEBUG_MAX_PARTS + 2]; |
| 2301 | int sectors_per_part, num_sectors, k; |
| 2302 | int heads_by_sects, start_sec, end_sec; |
| 2303 | |
| 2304 | /* assume partition table already zeroed */ |
| 2305 | if ((scsi_debug_num_parts < 1) || (sdebug_store_size < 1048576)) |
| 2306 | return; |
| 2307 | if (scsi_debug_num_parts > SDEBUG_MAX_PARTS) { |
| 2308 | scsi_debug_num_parts = SDEBUG_MAX_PARTS; |
| 2309 | printk(KERN_WARNING "scsi_debug:build_parts: reducing " |
| 2310 | "partitions to %d\n", SDEBUG_MAX_PARTS); |
| 2311 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2312 | num_sectors = (int)sdebug_store_sectors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2313 | sectors_per_part = (num_sectors - sdebug_sectors_per) |
| 2314 | / scsi_debug_num_parts; |
| 2315 | heads_by_sects = sdebug_heads * sdebug_sectors_per; |
| 2316 | starts[0] = sdebug_sectors_per; |
| 2317 | for (k = 1; k < scsi_debug_num_parts; ++k) |
| 2318 | starts[k] = ((k * sectors_per_part) / heads_by_sects) |
| 2319 | * heads_by_sects; |
| 2320 | starts[scsi_debug_num_parts] = num_sectors; |
| 2321 | starts[scsi_debug_num_parts + 1] = 0; |
| 2322 | |
| 2323 | ramp[510] = 0x55; /* magic partition markings */ |
| 2324 | ramp[511] = 0xAA; |
| 2325 | pp = (struct partition *)(ramp + 0x1be); |
| 2326 | for (k = 0; starts[k + 1]; ++k, ++pp) { |
| 2327 | start_sec = starts[k]; |
| 2328 | end_sec = starts[k + 1] - 1; |
| 2329 | pp->boot_ind = 0; |
| 2330 | |
| 2331 | pp->cyl = start_sec / heads_by_sects; |
| 2332 | pp->head = (start_sec - (pp->cyl * heads_by_sects)) |
| 2333 | / sdebug_sectors_per; |
| 2334 | pp->sector = (start_sec % sdebug_sectors_per) + 1; |
| 2335 | |
| 2336 | pp->end_cyl = end_sec / heads_by_sects; |
| 2337 | pp->end_head = (end_sec - (pp->end_cyl * heads_by_sects)) |
| 2338 | / sdebug_sectors_per; |
| 2339 | pp->end_sector = (end_sec % sdebug_sectors_per) + 1; |
| 2340 | |
| 2341 | pp->start_sect = start_sec; |
| 2342 | pp->nr_sects = end_sec - start_sec + 1; |
| 2343 | pp->sys_ind = 0x83; /* plain Linux partition */ |
| 2344 | } |
| 2345 | } |
| 2346 | |
| 2347 | static int schedule_resp(struct scsi_cmnd * cmnd, |
| 2348 | struct sdebug_dev_info * devip, |
| 2349 | done_funct_t done, int scsi_result, int delta_jiff) |
| 2350 | { |
| 2351 | if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && cmnd) { |
| 2352 | if (scsi_result) { |
| 2353 | struct scsi_device * sdp = cmnd->device; |
| 2354 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2355 | printk(KERN_INFO "scsi_debug: <%u %u %u %u> " |
| 2356 | "non-zero result=0x%x\n", sdp->host->host_no, |
| 2357 | sdp->channel, sdp->id, sdp->lun, scsi_result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2358 | } |
| 2359 | } |
| 2360 | if (cmnd && devip) { |
| 2361 | /* simulate autosense by this driver */ |
| 2362 | if (SAM_STAT_CHECK_CONDITION == (scsi_result & 0xff)) |
| 2363 | memcpy(cmnd->sense_buffer, devip->sense_buff, |
| 2364 | (SCSI_SENSE_BUFFERSIZE > SDEBUG_SENSE_LEN) ? |
| 2365 | SDEBUG_SENSE_LEN : SCSI_SENSE_BUFFERSIZE); |
| 2366 | } |
| 2367 | if (delta_jiff <= 0) { |
| 2368 | if (cmnd) |
| 2369 | cmnd->result = scsi_result; |
| 2370 | if (done) |
| 2371 | done(cmnd); |
| 2372 | return 0; |
| 2373 | } else { |
| 2374 | unsigned long iflags; |
| 2375 | int k; |
| 2376 | struct sdebug_queued_cmd * sqcp = NULL; |
| 2377 | |
| 2378 | spin_lock_irqsave(&queued_arr_lock, iflags); |
| 2379 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { |
| 2380 | sqcp = &queued_arr[k]; |
| 2381 | if (! sqcp->in_use) |
| 2382 | break; |
| 2383 | } |
| 2384 | if (k >= SCSI_DEBUG_CANQUEUE) { |
| 2385 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 2386 | printk(KERN_WARNING "scsi_debug: can_queue exceeded\n"); |
| 2387 | return 1; /* report busy to mid level */ |
| 2388 | } |
| 2389 | sqcp->in_use = 1; |
| 2390 | sqcp->a_cmnd = cmnd; |
| 2391 | sqcp->scsi_result = scsi_result; |
| 2392 | sqcp->done_funct = done; |
| 2393 | sqcp->cmnd_timer.function = timer_intr_handler; |
| 2394 | sqcp->cmnd_timer.data = k; |
| 2395 | sqcp->cmnd_timer.expires = jiffies + delta_jiff; |
| 2396 | add_timer(&sqcp->cmnd_timer); |
| 2397 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 2398 | if (cmnd) |
| 2399 | cmnd->result = 0; |
| 2400 | return 0; |
| 2401 | } |
| 2402 | } |
| 2403 | |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2404 | /* Note: The following macros create attribute files in the |
| 2405 | /sys/module/scsi_debug/parameters directory. Unfortunately this |
| 2406 | driver is unaware of a change and cannot trigger auxiliary actions |
| 2407 | as it can when the corresponding attribute in the |
| 2408 | /sys/bus/pseudo/drivers/scsi_debug directory is changed. |
| 2409 | */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2410 | module_param_named(add_host, scsi_debug_add_host, int, S_IRUGO | S_IWUSR); |
| 2411 | module_param_named(delay, scsi_debug_delay, int, S_IRUGO | S_IWUSR); |
| 2412 | module_param_named(dev_size_mb, scsi_debug_dev_size_mb, int, S_IRUGO); |
| 2413 | module_param_named(dsense, scsi_debug_dsense, int, S_IRUGO | S_IWUSR); |
| 2414 | module_param_named(every_nth, scsi_debug_every_nth, int, S_IRUGO | S_IWUSR); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2415 | module_param_named(fake_rw, scsi_debug_fake_rw, int, S_IRUGO | S_IWUSR); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2416 | module_param_named(max_luns, scsi_debug_max_luns, int, S_IRUGO | S_IWUSR); |
| 2417 | module_param_named(no_lun_0, scsi_debug_no_lun_0, int, S_IRUGO | S_IWUSR); |
| 2418 | module_param_named(num_parts, scsi_debug_num_parts, int, S_IRUGO); |
| 2419 | module_param_named(num_tgts, scsi_debug_num_tgts, int, S_IRUGO | S_IWUSR); |
| 2420 | module_param_named(opts, scsi_debug_opts, int, S_IRUGO | S_IWUSR); |
| 2421 | module_param_named(ptype, scsi_debug_ptype, int, S_IRUGO | S_IWUSR); |
| 2422 | module_param_named(scsi_level, scsi_debug_scsi_level, int, S_IRUGO); |
| 2423 | module_param_named(virtual_gb, scsi_debug_virtual_gb, int, S_IRUGO | S_IWUSR); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2424 | module_param_named(vpd_use_hostno, scsi_debug_vpd_use_hostno, int, |
| 2425 | S_IRUGO | S_IWUSR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2426 | |
| 2427 | MODULE_AUTHOR("Eric Youngdale + Douglas Gilbert"); |
| 2428 | MODULE_DESCRIPTION("SCSI debug adapter driver"); |
| 2429 | MODULE_LICENSE("GPL"); |
| 2430 | MODULE_VERSION(SCSI_DEBUG_VERSION); |
| 2431 | |
| 2432 | MODULE_PARM_DESC(add_host, "0..127 hosts allowed(def=1)"); |
| 2433 | MODULE_PARM_DESC(delay, "# of jiffies to delay response(def=1)"); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2434 | MODULE_PARM_DESC(dev_size_mb, "size in MB of ram shared by devs(def=8)"); |
| 2435 | MODULE_PARM_DESC(dsense, "use descriptor sense format(def=0 -> fixed)"); |
Randy Dunlap | beb87c3 | 2007-06-11 11:36:40 -0700 | [diff] [blame] | 2436 | MODULE_PARM_DESC(every_nth, "timeout every nth command(def=0)"); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2437 | MODULE_PARM_DESC(fake_rw, "fake reads/writes instead of copying (def=0)"); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2438 | MODULE_PARM_DESC(max_luns, "number of LUNs per target to simulate(def=1)"); |
| 2439 | 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] | 2440 | MODULE_PARM_DESC(num_parts, "number of partitions(def=0)"); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2441 | MODULE_PARM_DESC(num_tgts, "number of targets per host to simulate(def=1)"); |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 2442 | MODULE_PARM_DESC(opts, "1->noise, 2->medium_err, 4->timeout, 8->recovered_err... (def=0)"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2443 | MODULE_PARM_DESC(ptype, "SCSI peripheral type(def=0[disk])"); |
| 2444 | 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] | 2445 | MODULE_PARM_DESC(virtual_gb, "virtual gigabyte size (def=0 -> use dev_size_mb)"); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2446 | MODULE_PARM_DESC(vpd_use_hostno, "0 -> dev ids ignore hostno (def=1 -> unique dev ids)"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2447 | |
| 2448 | |
| 2449 | static char sdebug_info[256]; |
| 2450 | |
| 2451 | static const char * scsi_debug_info(struct Scsi_Host * shp) |
| 2452 | { |
| 2453 | sprintf(sdebug_info, "scsi_debug, version %s [%s], " |
| 2454 | "dev_size_mb=%d, opts=0x%x", SCSI_DEBUG_VERSION, |
| 2455 | scsi_debug_version_date, scsi_debug_dev_size_mb, |
| 2456 | scsi_debug_opts); |
| 2457 | return sdebug_info; |
| 2458 | } |
| 2459 | |
| 2460 | /* scsi_debug_proc_info |
| 2461 | * Used if the driver currently has no own support for /proc/scsi |
| 2462 | */ |
| 2463 | static int scsi_debug_proc_info(struct Scsi_Host *host, char *buffer, char **start, off_t offset, |
| 2464 | int length, int inout) |
| 2465 | { |
| 2466 | int len, pos, begin; |
| 2467 | int orig_length; |
| 2468 | |
| 2469 | orig_length = length; |
| 2470 | |
| 2471 | if (inout == 1) { |
| 2472 | char arr[16]; |
| 2473 | int minLen = length > 15 ? 15 : length; |
| 2474 | |
| 2475 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) |
| 2476 | return -EACCES; |
| 2477 | memcpy(arr, buffer, minLen); |
| 2478 | arr[minLen] = '\0'; |
| 2479 | if (1 != sscanf(arr, "%d", &pos)) |
| 2480 | return -EINVAL; |
| 2481 | scsi_debug_opts = pos; |
| 2482 | if (scsi_debug_every_nth != 0) |
| 2483 | scsi_debug_cmnd_count = 0; |
| 2484 | return length; |
| 2485 | } |
| 2486 | begin = 0; |
| 2487 | pos = len = sprintf(buffer, "scsi_debug adapter driver, version " |
| 2488 | "%s [%s]\n" |
| 2489 | "num_tgts=%d, shared (ram) size=%d MB, opts=0x%x, " |
| 2490 | "every_nth=%d(curr:%d)\n" |
| 2491 | "delay=%d, max_luns=%d, scsi_level=%d\n" |
| 2492 | "sector_size=%d bytes, cylinders=%d, heads=%d, sectors=%d\n" |
| 2493 | "number of aborts=%d, device_reset=%d, bus_resets=%d, " |
| 2494 | "host_resets=%d\n", |
| 2495 | SCSI_DEBUG_VERSION, scsi_debug_version_date, scsi_debug_num_tgts, |
| 2496 | scsi_debug_dev_size_mb, scsi_debug_opts, scsi_debug_every_nth, |
| 2497 | scsi_debug_cmnd_count, scsi_debug_delay, |
| 2498 | scsi_debug_max_luns, scsi_debug_scsi_level, |
| 2499 | SECT_SIZE, sdebug_cylinders_per, sdebug_heads, sdebug_sectors_per, |
| 2500 | num_aborts, num_dev_resets, num_bus_resets, num_host_resets); |
| 2501 | if (pos < offset) { |
| 2502 | len = 0; |
| 2503 | begin = pos; |
| 2504 | } |
| 2505 | *start = buffer + (offset - begin); /* Start of wanted data */ |
| 2506 | len -= (offset - begin); |
| 2507 | if (len > length) |
| 2508 | len = length; |
| 2509 | return len; |
| 2510 | } |
| 2511 | |
| 2512 | static ssize_t sdebug_delay_show(struct device_driver * ddp, char * buf) |
| 2513 | { |
| 2514 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_delay); |
| 2515 | } |
| 2516 | |
| 2517 | static ssize_t sdebug_delay_store(struct device_driver * ddp, |
| 2518 | const char * buf, size_t count) |
| 2519 | { |
| 2520 | int delay; |
| 2521 | char work[20]; |
| 2522 | |
| 2523 | if (1 == sscanf(buf, "%10s", work)) { |
| 2524 | if ((1 == sscanf(work, "%d", &delay)) && (delay >= 0)) { |
| 2525 | scsi_debug_delay = delay; |
| 2526 | return count; |
| 2527 | } |
| 2528 | } |
| 2529 | return -EINVAL; |
| 2530 | } |
| 2531 | DRIVER_ATTR(delay, S_IRUGO | S_IWUSR, sdebug_delay_show, |
| 2532 | sdebug_delay_store); |
| 2533 | |
| 2534 | static ssize_t sdebug_opts_show(struct device_driver * ddp, char * buf) |
| 2535 | { |
| 2536 | return scnprintf(buf, PAGE_SIZE, "0x%x\n", scsi_debug_opts); |
| 2537 | } |
| 2538 | |
| 2539 | static ssize_t sdebug_opts_store(struct device_driver * ddp, |
| 2540 | const char * buf, size_t count) |
| 2541 | { |
| 2542 | int opts; |
| 2543 | char work[20]; |
| 2544 | |
| 2545 | if (1 == sscanf(buf, "%10s", work)) { |
| 2546 | if (0 == strnicmp(work,"0x", 2)) { |
| 2547 | if (1 == sscanf(&work[2], "%x", &opts)) |
| 2548 | goto opts_done; |
| 2549 | } else { |
| 2550 | if (1 == sscanf(work, "%d", &opts)) |
| 2551 | goto opts_done; |
| 2552 | } |
| 2553 | } |
| 2554 | return -EINVAL; |
| 2555 | opts_done: |
| 2556 | scsi_debug_opts = opts; |
| 2557 | scsi_debug_cmnd_count = 0; |
| 2558 | return count; |
| 2559 | } |
| 2560 | DRIVER_ATTR(opts, S_IRUGO | S_IWUSR, sdebug_opts_show, |
| 2561 | sdebug_opts_store); |
| 2562 | |
| 2563 | static ssize_t sdebug_ptype_show(struct device_driver * ddp, char * buf) |
| 2564 | { |
| 2565 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ptype); |
| 2566 | } |
| 2567 | static ssize_t sdebug_ptype_store(struct device_driver * ddp, |
| 2568 | const char * buf, size_t count) |
| 2569 | { |
| 2570 | int n; |
| 2571 | |
| 2572 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2573 | scsi_debug_ptype = n; |
| 2574 | return count; |
| 2575 | } |
| 2576 | return -EINVAL; |
| 2577 | } |
| 2578 | DRIVER_ATTR(ptype, S_IRUGO | S_IWUSR, sdebug_ptype_show, sdebug_ptype_store); |
| 2579 | |
| 2580 | static ssize_t sdebug_dsense_show(struct device_driver * ddp, char * buf) |
| 2581 | { |
| 2582 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dsense); |
| 2583 | } |
| 2584 | static ssize_t sdebug_dsense_store(struct device_driver * ddp, |
| 2585 | const char * buf, size_t count) |
| 2586 | { |
| 2587 | int n; |
| 2588 | |
| 2589 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2590 | scsi_debug_dsense = n; |
| 2591 | return count; |
| 2592 | } |
| 2593 | return -EINVAL; |
| 2594 | } |
| 2595 | DRIVER_ATTR(dsense, S_IRUGO | S_IWUSR, sdebug_dsense_show, |
| 2596 | sdebug_dsense_store); |
| 2597 | |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2598 | static ssize_t sdebug_fake_rw_show(struct device_driver * ddp, char * buf) |
| 2599 | { |
| 2600 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_fake_rw); |
| 2601 | } |
| 2602 | static ssize_t sdebug_fake_rw_store(struct device_driver * ddp, |
| 2603 | const char * buf, size_t count) |
| 2604 | { |
| 2605 | int n; |
| 2606 | |
| 2607 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2608 | scsi_debug_fake_rw = n; |
| 2609 | return count; |
| 2610 | } |
| 2611 | return -EINVAL; |
| 2612 | } |
| 2613 | DRIVER_ATTR(fake_rw, S_IRUGO | S_IWUSR, sdebug_fake_rw_show, |
| 2614 | sdebug_fake_rw_store); |
| 2615 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2616 | static ssize_t sdebug_no_lun_0_show(struct device_driver * ddp, char * buf) |
| 2617 | { |
| 2618 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_no_lun_0); |
| 2619 | } |
| 2620 | static ssize_t sdebug_no_lun_0_store(struct device_driver * ddp, |
| 2621 | const char * buf, size_t count) |
| 2622 | { |
| 2623 | int n; |
| 2624 | |
| 2625 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2626 | scsi_debug_no_lun_0 = n; |
| 2627 | return count; |
| 2628 | } |
| 2629 | return -EINVAL; |
| 2630 | } |
| 2631 | DRIVER_ATTR(no_lun_0, S_IRUGO | S_IWUSR, sdebug_no_lun_0_show, |
| 2632 | sdebug_no_lun_0_store); |
| 2633 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2634 | static ssize_t sdebug_num_tgts_show(struct device_driver * ddp, char * buf) |
| 2635 | { |
| 2636 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_tgts); |
| 2637 | } |
| 2638 | static ssize_t sdebug_num_tgts_store(struct device_driver * ddp, |
| 2639 | const char * buf, size_t count) |
| 2640 | { |
| 2641 | int n; |
| 2642 | |
| 2643 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2644 | scsi_debug_num_tgts = n; |
| 2645 | sdebug_max_tgts_luns(); |
| 2646 | return count; |
| 2647 | } |
| 2648 | return -EINVAL; |
| 2649 | } |
| 2650 | DRIVER_ATTR(num_tgts, S_IRUGO | S_IWUSR, sdebug_num_tgts_show, |
| 2651 | sdebug_num_tgts_store); |
| 2652 | |
| 2653 | static ssize_t sdebug_dev_size_mb_show(struct device_driver * ddp, char * buf) |
| 2654 | { |
| 2655 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dev_size_mb); |
| 2656 | } |
| 2657 | DRIVER_ATTR(dev_size_mb, S_IRUGO, sdebug_dev_size_mb_show, NULL); |
| 2658 | |
| 2659 | static ssize_t sdebug_num_parts_show(struct device_driver * ddp, char * buf) |
| 2660 | { |
| 2661 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_parts); |
| 2662 | } |
| 2663 | DRIVER_ATTR(num_parts, S_IRUGO, sdebug_num_parts_show, NULL); |
| 2664 | |
| 2665 | static ssize_t sdebug_every_nth_show(struct device_driver * ddp, char * buf) |
| 2666 | { |
| 2667 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_every_nth); |
| 2668 | } |
| 2669 | static ssize_t sdebug_every_nth_store(struct device_driver * ddp, |
| 2670 | const char * buf, size_t count) |
| 2671 | { |
| 2672 | int nth; |
| 2673 | |
| 2674 | if ((count > 0) && (1 == sscanf(buf, "%d", &nth))) { |
| 2675 | scsi_debug_every_nth = nth; |
| 2676 | scsi_debug_cmnd_count = 0; |
| 2677 | return count; |
| 2678 | } |
| 2679 | return -EINVAL; |
| 2680 | } |
| 2681 | DRIVER_ATTR(every_nth, S_IRUGO | S_IWUSR, sdebug_every_nth_show, |
| 2682 | sdebug_every_nth_store); |
| 2683 | |
| 2684 | static ssize_t sdebug_max_luns_show(struct device_driver * ddp, char * buf) |
| 2685 | { |
| 2686 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_max_luns); |
| 2687 | } |
| 2688 | static ssize_t sdebug_max_luns_store(struct device_driver * ddp, |
| 2689 | const char * buf, size_t count) |
| 2690 | { |
| 2691 | int n; |
| 2692 | |
| 2693 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2694 | scsi_debug_max_luns = n; |
| 2695 | sdebug_max_tgts_luns(); |
| 2696 | return count; |
| 2697 | } |
| 2698 | return -EINVAL; |
| 2699 | } |
| 2700 | DRIVER_ATTR(max_luns, S_IRUGO | S_IWUSR, sdebug_max_luns_show, |
| 2701 | sdebug_max_luns_store); |
| 2702 | |
| 2703 | static ssize_t sdebug_scsi_level_show(struct device_driver * ddp, char * buf) |
| 2704 | { |
| 2705 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_scsi_level); |
| 2706 | } |
| 2707 | DRIVER_ATTR(scsi_level, S_IRUGO, sdebug_scsi_level_show, NULL); |
| 2708 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2709 | static ssize_t sdebug_virtual_gb_show(struct device_driver * ddp, char * buf) |
| 2710 | { |
| 2711 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_virtual_gb); |
| 2712 | } |
| 2713 | static ssize_t sdebug_virtual_gb_store(struct device_driver * ddp, |
| 2714 | const char * buf, size_t count) |
| 2715 | { |
| 2716 | int n; |
| 2717 | |
| 2718 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2719 | scsi_debug_virtual_gb = n; |
| 2720 | if (scsi_debug_virtual_gb > 0) { |
| 2721 | sdebug_capacity = 2048 * 1024; |
| 2722 | sdebug_capacity *= scsi_debug_virtual_gb; |
| 2723 | } else |
| 2724 | sdebug_capacity = sdebug_store_sectors; |
| 2725 | return count; |
| 2726 | } |
| 2727 | return -EINVAL; |
| 2728 | } |
| 2729 | DRIVER_ATTR(virtual_gb, S_IRUGO | S_IWUSR, sdebug_virtual_gb_show, |
| 2730 | sdebug_virtual_gb_store); |
| 2731 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2732 | static ssize_t sdebug_add_host_show(struct device_driver * ddp, char * buf) |
| 2733 | { |
| 2734 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_add_host); |
| 2735 | } |
| 2736 | |
| 2737 | static ssize_t sdebug_add_host_store(struct device_driver * ddp, |
| 2738 | const char * buf, size_t count) |
| 2739 | { |
| 2740 | int delta_hosts; |
| 2741 | char work[20]; |
| 2742 | |
| 2743 | if (1 != sscanf(buf, "%10s", work)) |
| 2744 | return -EINVAL; |
| 2745 | { /* temporary hack around sscanf() problem with -ve nums */ |
| 2746 | int neg = 0; |
| 2747 | |
| 2748 | if ('-' == *work) |
| 2749 | neg = 1; |
| 2750 | if (1 != sscanf(work + neg, "%d", &delta_hosts)) |
| 2751 | return -EINVAL; |
| 2752 | if (neg) |
| 2753 | delta_hosts = -delta_hosts; |
| 2754 | } |
| 2755 | if (delta_hosts > 0) { |
| 2756 | do { |
| 2757 | sdebug_add_adapter(); |
| 2758 | } while (--delta_hosts); |
| 2759 | } else if (delta_hosts < 0) { |
| 2760 | do { |
| 2761 | sdebug_remove_adapter(); |
| 2762 | } while (++delta_hosts); |
| 2763 | } |
| 2764 | return count; |
| 2765 | } |
| 2766 | DRIVER_ATTR(add_host, S_IRUGO | S_IWUSR, sdebug_add_host_show, |
| 2767 | sdebug_add_host_store); |
| 2768 | |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2769 | static ssize_t sdebug_vpd_use_hostno_show(struct device_driver * ddp, |
| 2770 | char * buf) |
| 2771 | { |
| 2772 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_vpd_use_hostno); |
| 2773 | } |
| 2774 | static ssize_t sdebug_vpd_use_hostno_store(struct device_driver * ddp, |
| 2775 | const char * buf, size_t count) |
| 2776 | { |
| 2777 | int n; |
| 2778 | |
| 2779 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2780 | scsi_debug_vpd_use_hostno = n; |
| 2781 | return count; |
| 2782 | } |
| 2783 | return -EINVAL; |
| 2784 | } |
| 2785 | DRIVER_ATTR(vpd_use_hostno, S_IRUGO | S_IWUSR, sdebug_vpd_use_hostno_show, |
| 2786 | sdebug_vpd_use_hostno_store); |
| 2787 | |
| 2788 | /* Note: The following function creates attribute files in the |
| 2789 | /sys/bus/pseudo/drivers/scsi_debug directory. The advantage of these |
| 2790 | files (over those found in the /sys/module/scsi_debug/parameters |
| 2791 | directory) is that auxiliary actions can be triggered when an attribute |
| 2792 | is changed. For example see: sdebug_add_host_store() above. |
| 2793 | */ |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2794 | static int do_create_driverfs_files(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2795 | { |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2796 | int ret; |
| 2797 | |
| 2798 | ret = driver_create_file(&sdebug_driverfs_driver, &driver_attr_add_host); |
| 2799 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_delay); |
| 2800 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dev_size_mb); |
| 2801 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dsense); |
| 2802 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_every_nth); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2803 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_fake_rw); |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2804 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_max_luns); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2805 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_no_lun_0); |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2806 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_num_parts); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2807 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_num_tgts); |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2808 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_ptype); |
| 2809 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_opts); |
| 2810 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_scsi_level); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2811 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_virtual_gb); |
| 2812 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_vpd_use_hostno); |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2813 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2814 | } |
| 2815 | |
| 2816 | static void do_remove_driverfs_files(void) |
| 2817 | { |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2818 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_vpd_use_hostno); |
| 2819 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_virtual_gb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2820 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_scsi_level); |
| 2821 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_opts); |
| 2822 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_ptype); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2823 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_num_tgts); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2824 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_num_parts); |
| 2825 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_no_lun_0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2826 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_max_luns); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2827 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_fake_rw); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2828 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_every_nth); |
| 2829 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dsense); |
| 2830 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dev_size_mb); |
| 2831 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_delay); |
| 2832 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_add_host); |
| 2833 | } |
| 2834 | |
| 2835 | static int __init scsi_debug_init(void) |
| 2836 | { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2837 | unsigned int sz; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2838 | int host_to_add; |
| 2839 | int k; |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2840 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2841 | |
| 2842 | if (scsi_debug_dev_size_mb < 1) |
| 2843 | scsi_debug_dev_size_mb = 1; /* force minimum 1 MB ramdisk */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2844 | sdebug_store_size = (unsigned int)scsi_debug_dev_size_mb * 1048576; |
| 2845 | sdebug_store_sectors = sdebug_store_size / SECT_SIZE; |
| 2846 | if (scsi_debug_virtual_gb > 0) { |
| 2847 | sdebug_capacity = 2048 * 1024; |
| 2848 | sdebug_capacity *= scsi_debug_virtual_gb; |
| 2849 | } else |
| 2850 | sdebug_capacity = sdebug_store_sectors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2851 | |
| 2852 | /* play around with geometry, don't waste too much on track 0 */ |
| 2853 | sdebug_heads = 8; |
| 2854 | sdebug_sectors_per = 32; |
| 2855 | if (scsi_debug_dev_size_mb >= 16) |
| 2856 | sdebug_heads = 32; |
| 2857 | else if (scsi_debug_dev_size_mb >= 256) |
| 2858 | sdebug_heads = 64; |
| 2859 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / |
| 2860 | (sdebug_sectors_per * sdebug_heads); |
| 2861 | if (sdebug_cylinders_per >= 1024) { |
| 2862 | /* other LLDs do this; implies >= 1GB ram disk ... */ |
| 2863 | sdebug_heads = 255; |
| 2864 | sdebug_sectors_per = 63; |
| 2865 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / |
| 2866 | (sdebug_sectors_per * sdebug_heads); |
| 2867 | } |
| 2868 | |
| 2869 | sz = sdebug_store_size; |
| 2870 | fake_storep = vmalloc(sz); |
| 2871 | if (NULL == fake_storep) { |
| 2872 | printk(KERN_ERR "scsi_debug_init: out of memory, 1\n"); |
| 2873 | return -ENOMEM; |
| 2874 | } |
| 2875 | memset(fake_storep, 0, sz); |
| 2876 | if (scsi_debug_num_parts > 0) |
| 2877 | sdebug_build_parts(fake_storep); |
| 2878 | |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2879 | ret = device_register(&pseudo_primary); |
| 2880 | if (ret < 0) { |
| 2881 | printk(KERN_WARNING "scsi_debug: device_register error: %d\n", |
| 2882 | ret); |
| 2883 | goto free_vm; |
| 2884 | } |
| 2885 | ret = bus_register(&pseudo_lld_bus); |
| 2886 | if (ret < 0) { |
| 2887 | printk(KERN_WARNING "scsi_debug: bus_register error: %d\n", |
| 2888 | ret); |
| 2889 | goto dev_unreg; |
| 2890 | } |
| 2891 | ret = driver_register(&sdebug_driverfs_driver); |
| 2892 | if (ret < 0) { |
| 2893 | printk(KERN_WARNING "scsi_debug: driver_register error: %d\n", |
| 2894 | ret); |
| 2895 | goto bus_unreg; |
| 2896 | } |
| 2897 | ret = do_create_driverfs_files(); |
| 2898 | if (ret < 0) { |
| 2899 | printk(KERN_WARNING "scsi_debug: driver_create_file error: %d\n", |
| 2900 | ret); |
| 2901 | goto del_files; |
| 2902 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2903 | |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2904 | init_all_queued(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2905 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2906 | host_to_add = scsi_debug_add_host; |
| 2907 | scsi_debug_add_host = 0; |
| 2908 | |
| 2909 | for (k = 0; k < host_to_add; k++) { |
| 2910 | if (sdebug_add_adapter()) { |
| 2911 | printk(KERN_ERR "scsi_debug_init: " |
| 2912 | "sdebug_add_adapter failed k=%d\n", k); |
| 2913 | break; |
| 2914 | } |
| 2915 | } |
| 2916 | |
| 2917 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { |
| 2918 | printk(KERN_INFO "scsi_debug_init: built %d host(s)\n", |
| 2919 | scsi_debug_add_host); |
| 2920 | } |
| 2921 | return 0; |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2922 | |
| 2923 | del_files: |
| 2924 | do_remove_driverfs_files(); |
| 2925 | driver_unregister(&sdebug_driverfs_driver); |
| 2926 | bus_unreg: |
| 2927 | bus_unregister(&pseudo_lld_bus); |
| 2928 | dev_unreg: |
| 2929 | device_unregister(&pseudo_primary); |
| 2930 | free_vm: |
| 2931 | vfree(fake_storep); |
| 2932 | |
| 2933 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2934 | } |
| 2935 | |
| 2936 | static void __exit scsi_debug_exit(void) |
| 2937 | { |
| 2938 | int k = scsi_debug_add_host; |
| 2939 | |
| 2940 | stop_all_queued(); |
| 2941 | for (; k; k--) |
| 2942 | sdebug_remove_adapter(); |
| 2943 | do_remove_driverfs_files(); |
| 2944 | driver_unregister(&sdebug_driverfs_driver); |
| 2945 | bus_unregister(&pseudo_lld_bus); |
| 2946 | device_unregister(&pseudo_primary); |
| 2947 | |
| 2948 | vfree(fake_storep); |
| 2949 | } |
| 2950 | |
| 2951 | device_initcall(scsi_debug_init); |
| 2952 | module_exit(scsi_debug_exit); |
| 2953 | |
Adrian Bunk | 52c1da3 | 2005-06-23 22:05:33 -0700 | [diff] [blame] | 2954 | static void pseudo_0_release(struct device * dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2955 | { |
| 2956 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 2957 | printk(KERN_INFO "scsi_debug: pseudo_0_release() called\n"); |
| 2958 | } |
| 2959 | |
| 2960 | static struct device pseudo_primary = { |
| 2961 | .bus_id = "pseudo_0", |
| 2962 | .release = pseudo_0_release, |
| 2963 | }; |
| 2964 | |
| 2965 | static int pseudo_lld_bus_match(struct device *dev, |
| 2966 | struct device_driver *dev_driver) |
| 2967 | { |
| 2968 | return 1; |
| 2969 | } |
| 2970 | |
| 2971 | static struct bus_type pseudo_lld_bus = { |
| 2972 | .name = "pseudo", |
| 2973 | .match = pseudo_lld_bus_match, |
Russell King | bbbe3a4 | 2006-01-05 14:44:46 +0000 | [diff] [blame] | 2974 | .probe = sdebug_driver_probe, |
| 2975 | .remove = sdebug_driver_remove, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2976 | }; |
| 2977 | |
| 2978 | static void sdebug_release_adapter(struct device * dev) |
| 2979 | { |
| 2980 | struct sdebug_host_info *sdbg_host; |
| 2981 | |
| 2982 | sdbg_host = to_sdebug_host(dev); |
| 2983 | kfree(sdbg_host); |
| 2984 | } |
| 2985 | |
| 2986 | static int sdebug_add_adapter(void) |
| 2987 | { |
| 2988 | int k, devs_per_host; |
| 2989 | int error = 0; |
| 2990 | struct sdebug_host_info *sdbg_host; |
| 2991 | struct sdebug_dev_info *sdbg_devinfo; |
| 2992 | struct list_head *lh, *lh_sf; |
| 2993 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2994 | sdbg_host = kzalloc(sizeof(*sdbg_host),GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2995 | if (NULL == sdbg_host) { |
| 2996 | printk(KERN_ERR "%s: out of memory at line %d\n", |
| 2997 | __FUNCTION__, __LINE__); |
| 2998 | return -ENOMEM; |
| 2999 | } |
| 3000 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3001 | INIT_LIST_HEAD(&sdbg_host->dev_info_list); |
| 3002 | |
| 3003 | devs_per_host = scsi_debug_num_tgts * scsi_debug_max_luns; |
| 3004 | for (k = 0; k < devs_per_host; k++) { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 3005 | sdbg_devinfo = kzalloc(sizeof(*sdbg_devinfo),GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3006 | if (NULL == sdbg_devinfo) { |
| 3007 | printk(KERN_ERR "%s: out of memory at line %d\n", |
| 3008 | __FUNCTION__, __LINE__); |
| 3009 | error = -ENOMEM; |
| 3010 | goto clean; |
| 3011 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3012 | sdbg_devinfo->sdbg_host = sdbg_host; |
| 3013 | list_add_tail(&sdbg_devinfo->dev_list, |
| 3014 | &sdbg_host->dev_info_list); |
| 3015 | } |
| 3016 | |
| 3017 | spin_lock(&sdebug_host_list_lock); |
| 3018 | list_add_tail(&sdbg_host->host_list, &sdebug_host_list); |
| 3019 | spin_unlock(&sdebug_host_list_lock); |
| 3020 | |
| 3021 | sdbg_host->dev.bus = &pseudo_lld_bus; |
| 3022 | sdbg_host->dev.parent = &pseudo_primary; |
| 3023 | sdbg_host->dev.release = &sdebug_release_adapter; |
| 3024 | sprintf(sdbg_host->dev.bus_id, "adapter%d", scsi_debug_add_host); |
| 3025 | |
| 3026 | error = device_register(&sdbg_host->dev); |
| 3027 | |
| 3028 | if (error) |
| 3029 | goto clean; |
| 3030 | |
| 3031 | ++scsi_debug_add_host; |
| 3032 | return error; |
| 3033 | |
| 3034 | clean: |
| 3035 | list_for_each_safe(lh, lh_sf, &sdbg_host->dev_info_list) { |
| 3036 | sdbg_devinfo = list_entry(lh, struct sdebug_dev_info, |
| 3037 | dev_list); |
| 3038 | list_del(&sdbg_devinfo->dev_list); |
| 3039 | kfree(sdbg_devinfo); |
| 3040 | } |
| 3041 | |
| 3042 | kfree(sdbg_host); |
| 3043 | return error; |
| 3044 | } |
| 3045 | |
| 3046 | static void sdebug_remove_adapter(void) |
| 3047 | { |
| 3048 | struct sdebug_host_info * sdbg_host = NULL; |
| 3049 | |
| 3050 | spin_lock(&sdebug_host_list_lock); |
| 3051 | if (!list_empty(&sdebug_host_list)) { |
| 3052 | sdbg_host = list_entry(sdebug_host_list.prev, |
| 3053 | struct sdebug_host_info, host_list); |
| 3054 | list_del(&sdbg_host->host_list); |
| 3055 | } |
| 3056 | spin_unlock(&sdebug_host_list_lock); |
| 3057 | |
| 3058 | if (!sdbg_host) |
| 3059 | return; |
| 3060 | |
| 3061 | device_unregister(&sdbg_host->dev); |
| 3062 | --scsi_debug_add_host; |
| 3063 | } |
| 3064 | |
FUJITA Tomonori | 9e603ca | 2008-03-02 18:30:16 +0900 | [diff] [blame^] | 3065 | static struct scsi_host_template sdebug_driver_template = { |
| 3066 | .proc_info = scsi_debug_proc_info, |
| 3067 | .proc_name = sdebug_proc_name, |
| 3068 | .name = "SCSI DEBUG", |
| 3069 | .info = scsi_debug_info, |
| 3070 | .slave_alloc = scsi_debug_slave_alloc, |
| 3071 | .slave_configure = scsi_debug_slave_configure, |
| 3072 | .slave_destroy = scsi_debug_slave_destroy, |
| 3073 | .ioctl = scsi_debug_ioctl, |
| 3074 | .queuecommand = scsi_debug_queuecommand, |
| 3075 | .eh_abort_handler = scsi_debug_abort, |
| 3076 | .eh_bus_reset_handler = scsi_debug_bus_reset, |
| 3077 | .eh_device_reset_handler = scsi_debug_device_reset, |
| 3078 | .eh_host_reset_handler = scsi_debug_host_reset, |
| 3079 | .bios_param = scsi_debug_biosparam, |
| 3080 | .can_queue = SCSI_DEBUG_CANQUEUE, |
| 3081 | .this_id = 7, |
| 3082 | .sg_tablesize = 256, |
| 3083 | .cmd_per_lun = 16, |
| 3084 | .max_sectors = 0xffff, |
| 3085 | .use_clustering = DISABLE_CLUSTERING, |
| 3086 | .module = THIS_MODULE, |
| 3087 | }; |
| 3088 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3089 | static int sdebug_driver_probe(struct device * dev) |
| 3090 | { |
| 3091 | int error = 0; |
| 3092 | struct sdebug_host_info *sdbg_host; |
| 3093 | struct Scsi_Host *hpnt; |
| 3094 | |
| 3095 | sdbg_host = to_sdebug_host(dev); |
| 3096 | |
| 3097 | hpnt = scsi_host_alloc(&sdebug_driver_template, sizeof(sdbg_host)); |
| 3098 | if (NULL == hpnt) { |
| 3099 | printk(KERN_ERR "%s: scsi_register failed\n", __FUNCTION__); |
| 3100 | error = -ENODEV; |
| 3101 | return error; |
| 3102 | } |
| 3103 | |
| 3104 | sdbg_host->shost = hpnt; |
| 3105 | *((struct sdebug_host_info **)hpnt->hostdata) = sdbg_host; |
| 3106 | if ((hpnt->this_id >= 0) && (scsi_debug_num_tgts > hpnt->this_id)) |
| 3107 | hpnt->max_id = scsi_debug_num_tgts + 1; |
| 3108 | else |
| 3109 | hpnt->max_id = scsi_debug_num_tgts; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 3110 | hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; /* = scsi_debug_max_luns; */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3111 | |
| 3112 | error = scsi_add_host(hpnt, &sdbg_host->dev); |
| 3113 | if (error) { |
| 3114 | printk(KERN_ERR "%s: scsi_add_host failed\n", __FUNCTION__); |
| 3115 | error = -ENODEV; |
| 3116 | scsi_host_put(hpnt); |
| 3117 | } else |
| 3118 | scsi_scan_host(hpnt); |
| 3119 | |
| 3120 | |
| 3121 | return error; |
| 3122 | } |
| 3123 | |
| 3124 | static int sdebug_driver_remove(struct device * dev) |
| 3125 | { |
| 3126 | struct list_head *lh, *lh_sf; |
| 3127 | struct sdebug_host_info *sdbg_host; |
| 3128 | struct sdebug_dev_info *sdbg_devinfo; |
| 3129 | |
| 3130 | sdbg_host = to_sdebug_host(dev); |
| 3131 | |
| 3132 | if (!sdbg_host) { |
| 3133 | printk(KERN_ERR "%s: Unable to locate host info\n", |
| 3134 | __FUNCTION__); |
| 3135 | return -ENODEV; |
| 3136 | } |
| 3137 | |
| 3138 | scsi_remove_host(sdbg_host->shost); |
| 3139 | |
| 3140 | list_for_each_safe(lh, lh_sf, &sdbg_host->dev_info_list) { |
| 3141 | sdbg_devinfo = list_entry(lh, struct sdebug_dev_info, |
| 3142 | dev_list); |
| 3143 | list_del(&sdbg_devinfo->dev_list); |
| 3144 | kfree(sdbg_devinfo); |
| 3145 | } |
| 3146 | |
| 3147 | scsi_host_put(sdbg_host->shost); |
| 3148 | return 0; |
| 3149 | } |
| 3150 | |
| 3151 | static void sdebug_max_tgts_luns(void) |
| 3152 | { |
| 3153 | struct sdebug_host_info * sdbg_host; |
| 3154 | struct Scsi_Host *hpnt; |
| 3155 | |
| 3156 | spin_lock(&sdebug_host_list_lock); |
| 3157 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { |
| 3158 | hpnt = sdbg_host->shost; |
| 3159 | if ((hpnt->this_id >= 0) && |
| 3160 | (scsi_debug_num_tgts > hpnt->this_id)) |
| 3161 | hpnt->max_id = scsi_debug_num_tgts + 1; |
| 3162 | else |
| 3163 | hpnt->max_id = scsi_debug_num_tgts; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 3164 | hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; /* scsi_debug_max_luns; */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3165 | } |
| 3166 | spin_unlock(&sdebug_host_list_lock); |
| 3167 | } |