blob: fa5758cbdedb10a4c8bf5424c6c189afb47fd2e9 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 * 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 Gilbert23183912006-09-16 20:30:47 -040010 * (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 Torvalds1da177e2005-04-16 15:20:36 -070013 *
14 *
Douglas Gilbert78d4e5a2010-03-25 17:29:05 -040015 * For documentation see http://sg.danny.cz/sg/sdebug26.html
Linus Torvalds1da177e2005-04-16 15:20:36 -070016 *
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 Torvalds1da177e2005-04-16 15:20:36 -070028#include <linux/module.h>
29
30#include <linux/kernel.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070031#include <linux/errno.h>
32#include <linux/timer.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090033#include <linux/slab.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070034#include <linux/types.h>
35#include <linux/string.h>
36#include <linux/genhd.h>
37#include <linux/fs.h>
38#include <linux/init.h>
39#include <linux/proc_fs.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070040#include <linux/vmalloc.h>
41#include <linux/moduleparam.h>
Jens Axboe852e0342007-07-16 10:19:24 +020042#include <linux/scatterlist.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070043#include <linux/blkdev.h>
Martin K. Petersenc6a44282009-01-04 03:08:19 -050044#include <linux/crc-t10dif.h>
45
46#include <net/checksum.h>
FUJITA Tomonori9ff26ee2008-03-02 18:30:15 +090047
Martin K. Petersen44d92692009-10-15 14:45:27 -040048#include <asm/unaligned.h>
49
FUJITA Tomonori9ff26ee2008-03-02 18:30:15 +090050#include <scsi/scsi.h>
51#include <scsi/scsi_cmnd.h>
52#include <scsi/scsi_device.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070053#include <scsi/scsi_host.h>
54#include <scsi/scsicam.h>
FUJITA Tomonoria34c4e92008-03-25 09:26:50 +090055#include <scsi/scsi_eh.h>
Martin K. Petersen395cef02009-09-18 17:33:03 -040056#include <scsi/scsi_dbg.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070057
Martin K. Petersenc6a44282009-01-04 03:08:19 -050058#include "sd.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070059#include "scsi_logging.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070060
Douglas Gilbert78d4e5a2010-03-25 17:29:05 -040061#define SCSI_DEBUG_VERSION "1.82"
62static const char * scsi_debug_version_date = "20100324";
Linus Torvalds1da177e2005-04-16 15:20:36 -070063
Douglas Gilbert6f3cbf52007-01-05 00:05:25 -050064/* Additional Sense Code (ASC) */
Douglas Gilbertc65b1442006-06-06 00:11:24 -040065#define NO_ADDITIONAL_SENSE 0x0
66#define LOGICAL_UNIT_NOT_READY 0x4
Linus Torvalds1da177e2005-04-16 15:20:36 -070067#define UNRECOVERED_READ_ERR 0x11
Douglas Gilbertc65b1442006-06-06 00:11:24 -040068#define PARAMETER_LIST_LENGTH_ERR 0x1a
Linus Torvalds1da177e2005-04-16 15:20:36 -070069#define INVALID_OPCODE 0x20
70#define ADDR_OUT_OF_RANGE 0x21
Martin K. Petersen395cef02009-09-18 17:33:03 -040071#define INVALID_COMMAND_OPCODE 0x20
Linus Torvalds1da177e2005-04-16 15:20:36 -070072#define INVALID_FIELD_IN_CDB 0x24
Douglas Gilbertc65b1442006-06-06 00:11:24 -040073#define INVALID_FIELD_IN_PARAM_LIST 0x26
Linus Torvalds1da177e2005-04-16 15:20:36 -070074#define POWERON_RESET 0x29
75#define SAVING_PARAMS_UNSUP 0x39
Douglas Gilbert6f3cbf52007-01-05 00:05:25 -050076#define TRANSPORT_PROBLEM 0x4b
Douglas Gilbertc65b1442006-06-06 00:11:24 -040077#define THRESHOLD_EXCEEDED 0x5d
78#define LOW_POWER_COND_ON 0x5e
Linus Torvalds1da177e2005-04-16 15:20:36 -070079
Douglas Gilbert6f3cbf52007-01-05 00:05:25 -050080/* Additional Sense Code Qualifier (ASCQ) */
81#define ACK_NAK_TO 0x3
82
Linus Torvalds1da177e2005-04-16 15:20:36 -070083#define SDEBUG_TAGGED_QUEUING 0 /* 0 | MSG_SIMPLE_TAG | MSG_ORDERED_TAG */
84
85/* Default values for driver parameters */
86#define DEF_NUM_HOST 1
87#define DEF_NUM_TGTS 1
88#define DEF_MAX_LUNS 1
89/* With these defaults, this driver will make 1 host with 1 target
90 * (id 0) containing 1 logical unit (lun 0). That is 1 device.
91 */
Martin K. Petersen5b94e232011-03-08 02:08:11 -050092#define DEF_ATO 1
Linus Torvalds1da177e2005-04-16 15:20:36 -070093#define DEF_DELAY 1
94#define DEF_DEV_SIZE_MB 8
Martin K. Petersen5b94e232011-03-08 02:08:11 -050095#define DEF_DIF 0
96#define DEF_DIX 0
97#define DEF_D_SENSE 0
Linus Torvalds1da177e2005-04-16 15:20:36 -070098#define DEF_EVERY_NTH 0
Martin K. Petersen5b94e232011-03-08 02:08:11 -050099#define DEF_FAKE_RW 0
100#define DEF_GUARD 0
101#define DEF_LBPU 0
102#define DEF_LBPWS 0
103#define DEF_LBPWS10 0
104#define DEF_LOWEST_ALIGNED 0
105#define DEF_NO_LUN_0 0
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106#define DEF_NUM_PARTS 0
107#define DEF_OPTS 0
Martin K. Petersene308b3d2010-03-23 01:12:27 -0400108#define DEF_OPT_BLKS 64
Martin K. Petersen5b94e232011-03-08 02:08:11 -0500109#define DEF_PHYSBLK_EXP 0
110#define DEF_PTYPE 0
111#define DEF_SCSI_LEVEL 5 /* INQUIRY, byte2 [5->SPC-3] */
112#define DEF_SECTOR_SIZE 512
113#define DEF_UNMAP_ALIGNMENT 0
114#define DEF_UNMAP_GRANULARITY 1
Martin K. Petersen60147592010-08-19 11:49:00 -0400115#define DEF_UNMAP_MAX_BLOCKS 0xFFFFFFFF
116#define DEF_UNMAP_MAX_DESC 256
Martin K. Petersen5b94e232011-03-08 02:08:11 -0500117#define DEF_VIRTUAL_GB 0
118#define DEF_VPD_USE_HOSTNO 1
119#define DEF_WRITESAME_LENGTH 0xFFFF
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120
121/* bit mask values for scsi_debug_opts */
122#define SCSI_DEBUG_OPT_NOISE 1
123#define SCSI_DEBUG_OPT_MEDIUM_ERR 2
124#define SCSI_DEBUG_OPT_TIMEOUT 4
125#define SCSI_DEBUG_OPT_RECOVERED_ERR 8
Douglas Gilbert6f3cbf52007-01-05 00:05:25 -0500126#define SCSI_DEBUG_OPT_TRANSPORT_ERR 16
Martin K. Petersenc6a44282009-01-04 03:08:19 -0500127#define SCSI_DEBUG_OPT_DIF_ERR 32
128#define SCSI_DEBUG_OPT_DIX_ERR 64
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129/* When "every_nth" > 0 then modulo "every_nth" commands:
130 * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set
131 * - a RECOVERED_ERROR is simulated on successful read and write
132 * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set.
Douglas Gilbert6f3cbf52007-01-05 00:05:25 -0500133 * - a TRANSPORT_ERROR is simulated on successful read and write
134 * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135 *
136 * When "every_nth" < 0 then after "- every_nth" commands:
137 * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set
138 * - a RECOVERED_ERROR is simulated on successful read and write
139 * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set.
Douglas Gilbert6f3cbf52007-01-05 00:05:25 -0500140 * - a TRANSPORT_ERROR is simulated on successful read and write
141 * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142 * This will continue until some other action occurs (e.g. the user
143 * writing a new value (other than -1 or 1) to every_nth via sysfs).
144 */
145
146/* when 1==SCSI_DEBUG_OPT_MEDIUM_ERR, a medium error is simulated at this
147 * sector on read commands: */
148#define OPT_MEDIUM_ERR_ADDR 0x1234 /* that's sector 4660 in decimal */
Douglas Gilbert32f7ef72011-03-11 10:43:35 -0500149#define OPT_MEDIUM_ERR_NUM 10 /* number of consecutive medium errs */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150
151/* If REPORT LUNS has luns >= 256 it can choose "flat space" (value 1)
152 * or "peripheral device" addressing (value 0) */
153#define SAM2_LUN_ADDRESS_METHOD 0
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400154#define SAM2_WLUN_REPORT_LUNS 0xc101
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155
Douglas Gilbert78d4e5a2010-03-25 17:29:05 -0400156/* Can queue up to this number of commands. Typically commands that
157 * that have a non-zero delay are queued. */
158#define SCSI_DEBUG_CANQUEUE 255
159
Linus Torvalds1da177e2005-04-16 15:20:36 -0700160static int scsi_debug_add_host = DEF_NUM_HOST;
Martin K. Petersen5b94e232011-03-08 02:08:11 -0500161static int scsi_debug_ato = DEF_ATO;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162static int scsi_debug_delay = DEF_DELAY;
163static int scsi_debug_dev_size_mb = DEF_DEV_SIZE_MB;
Martin K. Petersen5b94e232011-03-08 02:08:11 -0500164static int scsi_debug_dif = DEF_DIF;
165static int scsi_debug_dix = DEF_DIX;
166static int scsi_debug_dsense = DEF_D_SENSE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167static int scsi_debug_every_nth = DEF_EVERY_NTH;
Martin K. Petersen5b94e232011-03-08 02:08:11 -0500168static int scsi_debug_fake_rw = DEF_FAKE_RW;
169static int scsi_debug_guard = DEF_GUARD;
170static int scsi_debug_lowest_aligned = DEF_LOWEST_ALIGNED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171static int scsi_debug_max_luns = DEF_MAX_LUNS;
Douglas Gilbert78d4e5a2010-03-25 17:29:05 -0400172static int scsi_debug_max_queue = SCSI_DEBUG_CANQUEUE;
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400173static int scsi_debug_no_lun_0 = DEF_NO_LUN_0;
Martin K. Petersen5b94e232011-03-08 02:08:11 -0500174static int scsi_debug_no_uld = 0;
175static int scsi_debug_num_parts = DEF_NUM_PARTS;
176static int scsi_debug_num_tgts = DEF_NUM_TGTS; /* targets per host */
Martin K. Petersene308b3d2010-03-23 01:12:27 -0400177static int scsi_debug_opt_blks = DEF_OPT_BLKS;
Martin K. Petersen5b94e232011-03-08 02:08:11 -0500178static int scsi_debug_opts = DEF_OPTS;
179static int scsi_debug_physblk_exp = DEF_PHYSBLK_EXP;
180static int scsi_debug_ptype = DEF_PTYPE; /* SCSI peripheral type (0==disk) */
181static int scsi_debug_scsi_level = DEF_SCSI_LEVEL;
182static int scsi_debug_sector_size = DEF_SECTOR_SIZE;
183static int scsi_debug_virtual_gb = DEF_VIRTUAL_GB;
184static int scsi_debug_vpd_use_hostno = DEF_VPD_USE_HOSTNO;
185static unsigned int scsi_debug_lbpu = DEF_LBPU;
186static unsigned int scsi_debug_lbpws = DEF_LBPWS;
187static unsigned int scsi_debug_lbpws10 = DEF_LBPWS10;
Martin K. Petersen60147592010-08-19 11:49:00 -0400188static unsigned int scsi_debug_unmap_alignment = DEF_UNMAP_ALIGNMENT;
Martin K. Petersen5b94e232011-03-08 02:08:11 -0500189static unsigned int scsi_debug_unmap_granularity = DEF_UNMAP_GRANULARITY;
190static unsigned int scsi_debug_unmap_max_blocks = DEF_UNMAP_MAX_BLOCKS;
191static unsigned int scsi_debug_unmap_max_desc = DEF_UNMAP_MAX_DESC;
192static unsigned int scsi_debug_write_same_length = DEF_WRITESAME_LENGTH;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193
194static int scsi_debug_cmnd_count = 0;
195
196#define DEV_READONLY(TGT) (0)
197#define DEV_REMOVEABLE(TGT) (0)
198
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400199static unsigned int sdebug_store_sectors;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200static sector_t sdebug_capacity; /* in sectors */
201
202/* old BIOS stuff, kernel may get rid of them but some mode sense pages
203 may still need them */
204static int sdebug_heads; /* heads per disk */
205static int sdebug_cylinders_per; /* cylinders per surface */
206static int sdebug_sectors_per; /* sectors per cylinder */
207
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208#define SDEBUG_MAX_PARTS 4
209
210#define SDEBUG_SENSE_LEN 32
211
Martin K. Petersen395cef02009-09-18 17:33:03 -0400212#define SCSI_DEBUG_MAX_CMD_LEN 32
FUJITA Tomonori9e603ca2008-03-02 18:30:16 +0900213
Martin K. Petersen5b94e232011-03-08 02:08:11 -0500214static unsigned int scsi_debug_lbp(void)
215{
216 return scsi_debug_lbpu | scsi_debug_lbpws | scsi_debug_lbpws10;
217}
218
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219struct sdebug_dev_info {
220 struct list_head dev_list;
221 unsigned char sense_buff[SDEBUG_SENSE_LEN]; /* weak nexus */
222 unsigned int channel;
223 unsigned int target;
224 unsigned int lun;
225 struct sdebug_host_info *sdbg_host;
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400226 unsigned int wlun;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700227 char reset;
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400228 char stopped;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700229 char used;
230};
231
232struct sdebug_host_info {
233 struct list_head host_list;
234 struct Scsi_Host *shost;
235 struct device dev;
236 struct list_head dev_info_list;
237};
238
239#define to_sdebug_host(d) \
240 container_of(d, struct sdebug_host_info, dev)
241
242static LIST_HEAD(sdebug_host_list);
243static DEFINE_SPINLOCK(sdebug_host_list_lock);
244
245typedef void (* done_funct_t) (struct scsi_cmnd *);
246
247struct sdebug_queued_cmd {
248 int in_use;
249 struct timer_list cmnd_timer;
250 done_funct_t done_funct;
251 struct scsi_cmnd * a_cmnd;
252 int scsi_result;
253};
254static struct sdebug_queued_cmd queued_arr[SCSI_DEBUG_CANQUEUE];
255
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256static unsigned char * fake_storep; /* ramdisk storage */
Martin K. Petersenc6a44282009-01-04 03:08:19 -0500257static unsigned char *dif_storep; /* protection info */
Martin K. Petersen44d92692009-10-15 14:45:27 -0400258static void *map_storep; /* provisioning map */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259
Martin K. Petersen44d92692009-10-15 14:45:27 -0400260static unsigned long map_size;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261static int num_aborts = 0;
262static int num_dev_resets = 0;
263static int num_bus_resets = 0;
264static int num_host_resets = 0;
Martin K. Petersenc6a44282009-01-04 03:08:19 -0500265static int dix_writes;
266static int dix_reads;
267static int dif_errors;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268
269static DEFINE_SPINLOCK(queued_arr_lock);
270static DEFINE_RWLOCK(atomic_rw);
271
272static char sdebug_proc_name[] = "scsi_debug";
273
Linus Torvalds1da177e2005-04-16 15:20:36 -0700274static struct bus_type pseudo_lld_bus;
275
Martin K. Petersenc6a44282009-01-04 03:08:19 -0500276static inline sector_t dif_offset(sector_t sector)
277{
278 return sector << 3;
279}
280
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281static struct device_driver sdebug_driverfs_driver = {
282 .name = sdebug_proc_name,
283 .bus = &pseudo_lld_bus,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284};
285
286static const int check_condition_result =
287 (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
288
Martin K. Petersenc6a44282009-01-04 03:08:19 -0500289static const int illegal_condition_result =
290 (DRIVER_SENSE << 24) | (DID_ABORT << 16) | SAM_STAT_CHECK_CONDITION;
291
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400292static unsigned char ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0,
293 0, 0, 0x2, 0x4b};
294static unsigned char iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0,
295 0, 0, 0x0, 0x0};
296
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297static int sdebug_add_adapter(void);
298static void sdebug_remove_adapter(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299
FUJITA Tomonori8dea0d02008-03-30 00:59:58 +0900300static void sdebug_max_tgts_luns(void)
301{
302 struct sdebug_host_info *sdbg_host;
303 struct Scsi_Host *hpnt;
304
305 spin_lock(&sdebug_host_list_lock);
306 list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) {
307 hpnt = sdbg_host->shost;
308 if ((hpnt->this_id >= 0) &&
309 (scsi_debug_num_tgts > hpnt->this_id))
310 hpnt->max_id = scsi_debug_num_tgts + 1;
311 else
312 hpnt->max_id = scsi_debug_num_tgts;
313 /* scsi_debug_max_luns; */
314 hpnt->max_lun = SAM2_WLUN_REPORT_LUNS;
315 }
316 spin_unlock(&sdebug_host_list_lock);
317}
318
319static void mk_sense_buffer(struct sdebug_dev_info *devip, int key,
320 int asc, int asq)
321{
322 unsigned char *sbuff;
323
324 sbuff = devip->sense_buff;
325 memset(sbuff, 0, SDEBUG_SENSE_LEN);
326
327 scsi_build_sense_buffer(scsi_debug_dsense, sbuff, key, asc, asq);
328
329 if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
330 printk(KERN_INFO "scsi_debug: [sense_key,asc,ascq]: "
331 "[0x%x,0x%x,0x%x]\n", key, asc, asq);
332}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700333
FUJITA Tomonori3de9f942008-01-23 01:31:59 +0900334static void get_data_transfer_info(unsigned char *cmd,
Martin K. Petersen395cef02009-09-18 17:33:03 -0400335 unsigned long long *lba, unsigned int *num,
336 u32 *ei_lba)
FUJITA Tomonori3de9f942008-01-23 01:31:59 +0900337{
Martin K. Petersen395cef02009-09-18 17:33:03 -0400338 *ei_lba = 0;
339
FUJITA Tomonori3de9f942008-01-23 01:31:59 +0900340 switch (*cmd) {
Martin K. Petersen395cef02009-09-18 17:33:03 -0400341 case VARIABLE_LENGTH_CMD:
342 *lba = (u64)cmd[19] | (u64)cmd[18] << 8 |
343 (u64)cmd[17] << 16 | (u64)cmd[16] << 24 |
344 (u64)cmd[15] << 32 | (u64)cmd[14] << 40 |
345 (u64)cmd[13] << 48 | (u64)cmd[12] << 56;
346
347 *ei_lba = (u32)cmd[23] | (u32)cmd[22] << 8 |
348 (u32)cmd[21] << 16 | (u32)cmd[20] << 24;
349
350 *num = (u32)cmd[31] | (u32)cmd[30] << 8 | (u32)cmd[29] << 16 |
351 (u32)cmd[28] << 24;
352 break;
353
Martin K. Petersen44d92692009-10-15 14:45:27 -0400354 case WRITE_SAME_16:
FUJITA Tomonori3de9f942008-01-23 01:31:59 +0900355 case WRITE_16:
356 case READ_16:
FUJITA Tomonorid5cdc982008-03-25 17:04:46 +0900357 *lba = (u64)cmd[9] | (u64)cmd[8] << 8 |
358 (u64)cmd[7] << 16 | (u64)cmd[6] << 24 |
359 (u64)cmd[5] << 32 | (u64)cmd[4] << 40 |
360 (u64)cmd[3] << 48 | (u64)cmd[2] << 56;
361
362 *num = (u32)cmd[13] | (u32)cmd[12] << 8 | (u32)cmd[11] << 16 |
363 (u32)cmd[10] << 24;
FUJITA Tomonori3de9f942008-01-23 01:31:59 +0900364 break;
365 case WRITE_12:
366 case READ_12:
FUJITA Tomonorid5cdc982008-03-25 17:04:46 +0900367 *lba = (u32)cmd[5] | (u32)cmd[4] << 8 | (u32)cmd[3] << 16 |
368 (u32)cmd[2] << 24;
369
370 *num = (u32)cmd[9] | (u32)cmd[8] << 8 | (u32)cmd[7] << 16 |
371 (u32)cmd[6] << 24;
FUJITA Tomonori3de9f942008-01-23 01:31:59 +0900372 break;
Martin K. Petersen44d92692009-10-15 14:45:27 -0400373 case WRITE_SAME:
FUJITA Tomonori3de9f942008-01-23 01:31:59 +0900374 case WRITE_10:
375 case READ_10:
FUJITA Tomonoric639d142008-01-23 01:32:01 +0900376 case XDWRITEREAD_10:
FUJITA Tomonorid5cdc982008-03-25 17:04:46 +0900377 *lba = (u32)cmd[5] | (u32)cmd[4] << 8 | (u32)cmd[3] << 16 |
378 (u32)cmd[2] << 24;
379
380 *num = (u32)cmd[8] | (u32)cmd[7] << 8;
FUJITA Tomonori3de9f942008-01-23 01:31:59 +0900381 break;
382 case WRITE_6:
383 case READ_6:
FUJITA Tomonorid5cdc982008-03-25 17:04:46 +0900384 *lba = (u32)cmd[3] | (u32)cmd[2] << 8 |
385 (u32)(cmd[1] & 0x1f) << 16;
FUJITA Tomonori3de9f942008-01-23 01:31:59 +0900386 *num = (0 == cmd[4]) ? 256 : cmd[4];
387 break;
388 default:
389 break;
390 }
391}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700392
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393static int scsi_debug_ioctl(struct scsi_device *dev, int cmd, void __user *arg)
394{
395 if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) {
396 printk(KERN_INFO "scsi_debug: ioctl: cmd=0x%x\n", cmd);
397 }
398 return -EINVAL;
399 /* return -ENOTTY; // correct return but upsets fdisk */
400}
401
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400402static int check_readiness(struct scsi_cmnd * SCpnt, int reset_only,
403 struct sdebug_dev_info * devip)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404{
405 if (devip->reset) {
406 if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
407 printk(KERN_INFO "scsi_debug: Reporting Unit "
408 "attention: power on reset\n");
409 devip->reset = 0;
410 mk_sense_buffer(devip, UNIT_ATTENTION, POWERON_RESET, 0);
411 return check_condition_result;
412 }
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400413 if ((0 == reset_only) && devip->stopped) {
414 if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
415 printk(KERN_INFO "scsi_debug: Reporting Not "
416 "ready: initializing command required\n");
417 mk_sense_buffer(devip, NOT_READY, LOGICAL_UNIT_NOT_READY,
418 0x2);
419 return check_condition_result;
420 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421 return 0;
422}
423
424/* Returns 0 if ok else (DID_ERROR << 16). Sets scp->resid . */
FUJITA Tomonori21a61822008-03-09 13:44:30 +0900425static int fill_from_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700426 int arr_len)
427{
FUJITA Tomonori21a61822008-03-09 13:44:30 +0900428 int act_len;
FUJITA Tomonori072d0bb2008-01-23 01:32:00 +0900429 struct scsi_data_buffer *sdb = scsi_in(scp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430
FUJITA Tomonori072d0bb2008-01-23 01:32:00 +0900431 if (!sdb->length)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700432 return 0;
FUJITA Tomonori072d0bb2008-01-23 01:32:00 +0900433 if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_FROM_DEVICE))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700434 return (DID_ERROR << 16);
FUJITA Tomonori21a61822008-03-09 13:44:30 +0900435
436 act_len = sg_copy_from_buffer(sdb->table.sgl, sdb->table.nents,
437 arr, arr_len);
FUJITA Tomonori072d0bb2008-01-23 01:32:00 +0900438 if (sdb->resid)
439 sdb->resid -= act_len;
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400440 else
FUJITA Tomonori21a61822008-03-09 13:44:30 +0900441 sdb->resid = scsi_bufflen(scp) - act_len;
442
Linus Torvalds1da177e2005-04-16 15:20:36 -0700443 return 0;
444}
445
446/* Returns number of bytes fetched into 'arr' or -1 if error. */
FUJITA Tomonori21a61822008-03-09 13:44:30 +0900447static int fetch_to_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr,
448 int arr_len)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449{
FUJITA Tomonori21a61822008-03-09 13:44:30 +0900450 if (!scsi_bufflen(scp))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700451 return 0;
FUJITA Tomonori072d0bb2008-01-23 01:32:00 +0900452 if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_TO_DEVICE))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453 return -1;
FUJITA Tomonori21a61822008-03-09 13:44:30 +0900454
455 return scsi_sg_copy_to_buffer(scp, arr, arr_len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700456}
457
458
459static const char * inq_vendor_id = "Linux ";
460static const char * inq_product_id = "scsi_debug ";
461static const char * inq_product_rev = "0004";
462
Hannes Reinecke5a09e392006-10-20 09:58:47 +0200463static int inquiry_evpd_83(unsigned char * arr, int port_group_id,
464 int target_dev_id, int dev_id_num,
465 const char * dev_id_str,
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400466 int dev_id_str_len)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700467{
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400468 int num, port_a;
469 char b[32];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700470
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400471 port_a = target_dev_id + 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700472 /* T10 vendor identifier field format (faked) */
473 arr[0] = 0x2; /* ASCII */
474 arr[1] = 0x1;
475 arr[2] = 0x0;
476 memcpy(&arr[4], inq_vendor_id, 8);
477 memcpy(&arr[12], inq_product_id, 16);
478 memcpy(&arr[28], dev_id_str, dev_id_str_len);
479 num = 8 + 16 + dev_id_str_len;
480 arr[3] = num;
481 num += 4;
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400482 if (dev_id_num >= 0) {
483 /* NAA-5, Logical unit identifier (binary) */
484 arr[num++] = 0x1; /* binary (not necessarily sas) */
485 arr[num++] = 0x3; /* PIV=0, lu, naa */
486 arr[num++] = 0x0;
487 arr[num++] = 0x8;
488 arr[num++] = 0x53; /* naa-5 ieee company id=0x333333 (fake) */
489 arr[num++] = 0x33;
490 arr[num++] = 0x33;
491 arr[num++] = 0x30;
492 arr[num++] = (dev_id_num >> 24);
493 arr[num++] = (dev_id_num >> 16) & 0xff;
494 arr[num++] = (dev_id_num >> 8) & 0xff;
495 arr[num++] = dev_id_num & 0xff;
496 /* Target relative port number */
497 arr[num++] = 0x61; /* proto=sas, binary */
498 arr[num++] = 0x94; /* PIV=1, target port, rel port */
499 arr[num++] = 0x0; /* reserved */
500 arr[num++] = 0x4; /* length */
501 arr[num++] = 0x0; /* reserved */
502 arr[num++] = 0x0; /* reserved */
503 arr[num++] = 0x0;
504 arr[num++] = 0x1; /* relative port A */
505 }
506 /* NAA-5, Target port identifier */
507 arr[num++] = 0x61; /* proto=sas, binary */
508 arr[num++] = 0x93; /* piv=1, target port, naa */
509 arr[num++] = 0x0;
510 arr[num++] = 0x8;
511 arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */
512 arr[num++] = 0x22;
513 arr[num++] = 0x22;
514 arr[num++] = 0x20;
515 arr[num++] = (port_a >> 24);
516 arr[num++] = (port_a >> 16) & 0xff;
517 arr[num++] = (port_a >> 8) & 0xff;
518 arr[num++] = port_a & 0xff;
Hannes Reinecke5a09e392006-10-20 09:58:47 +0200519 /* NAA-5, Target port group identifier */
520 arr[num++] = 0x61; /* proto=sas, binary */
521 arr[num++] = 0x95; /* piv=1, target port group id */
522 arr[num++] = 0x0;
523 arr[num++] = 0x4;
524 arr[num++] = 0;
525 arr[num++] = 0;
526 arr[num++] = (port_group_id >> 8) & 0xff;
527 arr[num++] = port_group_id & 0xff;
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400528 /* NAA-5, Target device identifier */
529 arr[num++] = 0x61; /* proto=sas, binary */
530 arr[num++] = 0xa3; /* piv=1, target device, naa */
531 arr[num++] = 0x0;
532 arr[num++] = 0x8;
533 arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */
534 arr[num++] = 0x22;
535 arr[num++] = 0x22;
536 arr[num++] = 0x20;
537 arr[num++] = (target_dev_id >> 24);
538 arr[num++] = (target_dev_id >> 16) & 0xff;
539 arr[num++] = (target_dev_id >> 8) & 0xff;
540 arr[num++] = target_dev_id & 0xff;
541 /* SCSI name string: Target device identifier */
542 arr[num++] = 0x63; /* proto=sas, UTF-8 */
543 arr[num++] = 0xa8; /* piv=1, target device, SCSI name string */
544 arr[num++] = 0x0;
545 arr[num++] = 24;
546 memcpy(arr + num, "naa.52222220", 12);
547 num += 12;
548 snprintf(b, sizeof(b), "%08X", target_dev_id);
549 memcpy(arr + num, b, 8);
550 num += 8;
551 memset(arr + num, 0, 4);
552 num += 4;
553 return num;
554}
555
556
557static unsigned char vpd84_data[] = {
558/* from 4th byte */ 0x22,0x22,0x22,0x0,0xbb,0x0,
559 0x22,0x22,0x22,0x0,0xbb,0x1,
560 0x22,0x22,0x22,0x0,0xbb,0x2,
561};
562
563static int inquiry_evpd_84(unsigned char * arr)
564{
565 memcpy(arr, vpd84_data, sizeof(vpd84_data));
566 return sizeof(vpd84_data);
567}
568
569static int inquiry_evpd_85(unsigned char * arr)
570{
571 int num = 0;
572 const char * na1 = "https://www.kernel.org/config";
573 const char * na2 = "http://www.kernel.org/log";
574 int plen, olen;
575
576 arr[num++] = 0x1; /* lu, storage config */
577 arr[num++] = 0x0; /* reserved */
578 arr[num++] = 0x0;
579 olen = strlen(na1);
580 plen = olen + 1;
581 if (plen % 4)
582 plen = ((plen / 4) + 1) * 4;
583 arr[num++] = plen; /* length, null termianted, padded */
584 memcpy(arr + num, na1, olen);
585 memset(arr + num + olen, 0, plen - olen);
586 num += plen;
587
588 arr[num++] = 0x4; /* lu, logging */
589 arr[num++] = 0x0; /* reserved */
590 arr[num++] = 0x0;
591 olen = strlen(na2);
592 plen = olen + 1;
593 if (plen % 4)
594 plen = ((plen / 4) + 1) * 4;
595 arr[num++] = plen; /* length, null terminated, padded */
596 memcpy(arr + num, na2, olen);
597 memset(arr + num + olen, 0, plen - olen);
598 num += plen;
599
600 return num;
601}
602
603/* SCSI ports VPD page */
604static int inquiry_evpd_88(unsigned char * arr, int target_dev_id)
605{
606 int num = 0;
607 int port_a, port_b;
608
609 port_a = target_dev_id + 1;
610 port_b = port_a + 1;
611 arr[num++] = 0x0; /* reserved */
612 arr[num++] = 0x0; /* reserved */
613 arr[num++] = 0x0;
614 arr[num++] = 0x1; /* relative port 1 (primary) */
615 memset(arr + num, 0, 6);
616 num += 6;
617 arr[num++] = 0x0;
618 arr[num++] = 12; /* length tp descriptor */
619 /* naa-5 target port identifier (A) */
620 arr[num++] = 0x61; /* proto=sas, binary */
621 arr[num++] = 0x93; /* PIV=1, target port, NAA */
622 arr[num++] = 0x0; /* reserved */
623 arr[num++] = 0x8; /* length */
624 arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */
625 arr[num++] = 0x22;
626 arr[num++] = 0x22;
627 arr[num++] = 0x20;
628 arr[num++] = (port_a >> 24);
629 arr[num++] = (port_a >> 16) & 0xff;
630 arr[num++] = (port_a >> 8) & 0xff;
631 arr[num++] = port_a & 0xff;
632
633 arr[num++] = 0x0; /* reserved */
634 arr[num++] = 0x0; /* reserved */
635 arr[num++] = 0x0;
636 arr[num++] = 0x2; /* relative port 2 (secondary) */
637 memset(arr + num, 0, 6);
638 num += 6;
639 arr[num++] = 0x0;
640 arr[num++] = 12; /* length tp descriptor */
641 /* naa-5 target port identifier (B) */
642 arr[num++] = 0x61; /* proto=sas, binary */
643 arr[num++] = 0x93; /* PIV=1, target port, NAA */
644 arr[num++] = 0x0; /* reserved */
645 arr[num++] = 0x8; /* length */
646 arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */
647 arr[num++] = 0x22;
648 arr[num++] = 0x22;
649 arr[num++] = 0x20;
650 arr[num++] = (port_b >> 24);
651 arr[num++] = (port_b >> 16) & 0xff;
652 arr[num++] = (port_b >> 8) & 0xff;
653 arr[num++] = port_b & 0xff;
654
655 return num;
656}
657
658
659static unsigned char vpd89_data[] = {
660/* from 4th byte */ 0,0,0,0,
661'l','i','n','u','x',' ',' ',' ',
662'S','A','T',' ','s','c','s','i','_','d','e','b','u','g',' ',' ',
663'1','2','3','4',
6640x34,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,
6650xec,0,0,0,
6660x5a,0xc,0xff,0x3f,0x37,0xc8,0x10,0,0,0,0,0,0x3f,0,0,0,
6670,0,0,0,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x20,0x20,0x20,0x20,
6680x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0,0,0,0x40,0x4,0,0x2e,0x33,
6690x38,0x31,0x20,0x20,0x20,0x20,0x54,0x53,0x38,0x33,0x30,0x30,0x33,0x31,
6700x53,0x41,
6710x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,
6720x20,0x20,
6730x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,
6740x10,0x80,
6750,0,0,0x2f,0,0,0,0x2,0,0x2,0x7,0,0xff,0xff,0x1,0,
6760x3f,0,0xc1,0xff,0x3e,0,0x10,0x1,0xb0,0xf8,0x50,0x9,0,0,0x7,0,
6770x3,0,0x78,0,0x78,0,0xf0,0,0x78,0,0,0,0,0,0,0,
6780,0,0,0,0,0,0,0,0x2,0,0,0,0,0,0,0,
6790x7e,0,0x1b,0,0x6b,0x34,0x1,0x7d,0x3,0x40,0x69,0x34,0x1,0x3c,0x3,0x40,
6800x7f,0x40,0,0,0,0,0xfe,0xfe,0,0,0,0,0,0xfe,0,0,
6810,0,0,0,0,0,0,0,0xb0,0xf8,0x50,0x9,0,0,0,0,
6820,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6830,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6840,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6850x1,0,0xb0,0xf8,0x50,0x9,0xb0,0xf8,0x50,0x9,0x20,0x20,0x2,0,0xb6,0x42,
6860,0x80,0x8a,0,0x6,0x3c,0xa,0x3c,0xff,0xff,0xc6,0x7,0,0x1,0,0x8,
6870xf0,0xf,0,0x10,0x2,0,0x30,0,0,0,0,0,0,0,0x6,0xfe,
6880,0,0x2,0,0x50,0,0x8a,0,0x4f,0x95,0,0,0x21,0,0xb,0,
6890,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6900,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6910,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6920,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6930,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6940,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6950,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6960,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6970,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6980,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6990,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
7000,0,0,0,0,0,0,0,0,0,0,0,0,0,0xa5,0x51,
701};
702
703static int inquiry_evpd_89(unsigned char * arr)
704{
705 memcpy(arr, vpd89_data, sizeof(vpd89_data));
706 return sizeof(vpd89_data);
707}
708
709
Douglas Gilbert1e49f782009-10-29 01:48:31 -0400710/* Block limits VPD page (SBC-3) */
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400711static unsigned char vpdb0_data[] = {
Douglas Gilbert1e49f782009-10-29 01:48:31 -0400712 /* from 4th byte */ 0,0,0,4, 0,0,0x4,0, 0,0,0,64,
713 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
714 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
715 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400716};
717
718static int inquiry_evpd_b0(unsigned char * arr)
719{
Martin K. Petersenea61fca2009-05-15 00:40:33 -0400720 unsigned int gran;
721
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400722 memcpy(arr, vpdb0_data, sizeof(vpdb0_data));
Martin K. Petersene308b3d2010-03-23 01:12:27 -0400723
724 /* Optimal transfer length granularity */
Martin K. Petersenea61fca2009-05-15 00:40:33 -0400725 gran = 1 << scsi_debug_physblk_exp;
726 arr[2] = (gran >> 8) & 0xff;
727 arr[3] = gran & 0xff;
Martin K. Petersene308b3d2010-03-23 01:12:27 -0400728
729 /* Maximum Transfer Length */
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400730 if (sdebug_store_sectors > 0x400) {
731 arr[4] = (sdebug_store_sectors >> 24) & 0xff;
732 arr[5] = (sdebug_store_sectors >> 16) & 0xff;
733 arr[6] = (sdebug_store_sectors >> 8) & 0xff;
734 arr[7] = sdebug_store_sectors & 0xff;
735 }
Martin K. Petersen44d92692009-10-15 14:45:27 -0400736
Martin K. Petersene308b3d2010-03-23 01:12:27 -0400737 /* Optimal Transfer Length */
738 put_unaligned_be32(scsi_debug_opt_blks, &arr[8]);
739
Martin K. Petersen5b94e232011-03-08 02:08:11 -0500740 if (scsi_debug_lbpu) {
Martin K. Petersene308b3d2010-03-23 01:12:27 -0400741 /* Maximum Unmap LBA Count */
Martin K. Petersen60147592010-08-19 11:49:00 -0400742 put_unaligned_be32(scsi_debug_unmap_max_blocks, &arr[16]);
Martin K. Petersene308b3d2010-03-23 01:12:27 -0400743
744 /* Maximum Unmap Block Descriptor Count */
Martin K. Petersen44d92692009-10-15 14:45:27 -0400745 put_unaligned_be32(scsi_debug_unmap_max_desc, &arr[20]);
746 }
747
Martin K. Petersene308b3d2010-03-23 01:12:27 -0400748 /* Unmap Granularity Alignment */
Martin K. Petersen44d92692009-10-15 14:45:27 -0400749 if (scsi_debug_unmap_alignment) {
750 put_unaligned_be32(scsi_debug_unmap_alignment, &arr[28]);
751 arr[28] |= 0x80; /* UGAVALID */
752 }
753
Martin K. Petersene308b3d2010-03-23 01:12:27 -0400754 /* Optimal Unmap Granularity */
Martin K. Petersen60147592010-08-19 11:49:00 -0400755 put_unaligned_be32(scsi_debug_unmap_granularity, &arr[24]);
756
Martin K. Petersen5b94e232011-03-08 02:08:11 -0500757 /* Maximum WRITE SAME Length */
758 put_unaligned_be64(scsi_debug_write_same_length, &arr[32]);
759
760 return 0x3c; /* Mandatory page length for Logical Block Provisioning */
Martin K. Petersen44d92692009-10-15 14:45:27 -0400761
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400762 return sizeof(vpdb0_data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700763}
764
Douglas Gilbert1e49f782009-10-29 01:48:31 -0400765/* Block device characteristics VPD page (SBC-3) */
Matthew Wilcoxeac6e8e42008-06-19 10:02:58 -0600766static int inquiry_evpd_b1(unsigned char *arr)
767{
768 memset(arr, 0, 0x3c);
769 arr[0] = 0;
Douglas Gilbert1e49f782009-10-29 01:48:31 -0400770 arr[1] = 1; /* non rotating medium (e.g. solid state) */
771 arr[2] = 0;
772 arr[3] = 5; /* less than 1.8" */
Matthew Wilcoxeac6e8e42008-06-19 10:02:58 -0600773
774 return 0x3c;
775}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700776
Martin K. Petersen60147592010-08-19 11:49:00 -0400777/* Thin provisioning VPD page (SBC-3) */
778static int inquiry_evpd_b2(unsigned char *arr)
779{
780 memset(arr, 0, 0x8);
781 arr[0] = 0; /* threshold exponent */
782
Martin K. Petersen5b94e232011-03-08 02:08:11 -0500783 if (scsi_debug_lbpu)
Martin K. Petersen60147592010-08-19 11:49:00 -0400784 arr[1] = 1 << 7;
785
Martin K. Petersen5b94e232011-03-08 02:08:11 -0500786 if (scsi_debug_lbpws)
Martin K. Petersen60147592010-08-19 11:49:00 -0400787 arr[1] |= 1 << 6;
788
Martin K. Petersen5b94e232011-03-08 02:08:11 -0500789 if (scsi_debug_lbpws10)
790 arr[1] |= 1 << 5;
791
Martin K. Petersen60147592010-08-19 11:49:00 -0400792 return 0x8;
793}
794
Linus Torvalds1da177e2005-04-16 15:20:36 -0700795#define SDEBUG_LONG_INQ_SZ 96
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400796#define SDEBUG_MAX_INQ_ARR_SZ 584
Linus Torvalds1da177e2005-04-16 15:20:36 -0700797
798static int resp_inquiry(struct scsi_cmnd * scp, int target,
799 struct sdebug_dev_info * devip)
800{
801 unsigned char pq_pdt;
Hannes Reinecke5a09e392006-10-20 09:58:47 +0200802 unsigned char * arr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700803 unsigned char *cmd = (unsigned char *)scp->cmnd;
Hannes Reinecke5a09e392006-10-20 09:58:47 +0200804 int alloc_len, n, ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700805
806 alloc_len = (cmd[3] << 8) + cmd[4];
Douglas Gilbert6f3cbf52007-01-05 00:05:25 -0500807 arr = kzalloc(SDEBUG_MAX_INQ_ARR_SZ, GFP_ATOMIC);
808 if (! arr)
809 return DID_REQUEUE << 16;
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400810 if (devip->wlun)
811 pq_pdt = 0x1e; /* present, wlun */
812 else if (scsi_debug_no_lun_0 && (0 == devip->lun))
813 pq_pdt = 0x7f; /* not present, no device type */
814 else
815 pq_pdt = (scsi_debug_ptype & 0x1f);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700816 arr[0] = pq_pdt;
817 if (0x2 & cmd[1]) { /* CMDDT bit set */
818 mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB,
819 0);
Hannes Reinecke5a09e392006-10-20 09:58:47 +0200820 kfree(arr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700821 return check_condition_result;
822 } else if (0x1 & cmd[1]) { /* EVPD bit set */
Hannes Reinecke5a09e392006-10-20 09:58:47 +0200823 int lu_id_num, port_group_id, target_dev_id, len;
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400824 char lu_id_str[6];
825 int host_no = devip->sdbg_host->shost->host_no;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700826
Hannes Reinecke5a09e392006-10-20 09:58:47 +0200827 port_group_id = (((host_no + 1) & 0x7f) << 8) +
828 (devip->channel & 0x7f);
Douglas Gilbert23183912006-09-16 20:30:47 -0400829 if (0 == scsi_debug_vpd_use_hostno)
830 host_no = 0;
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400831 lu_id_num = devip->wlun ? -1 : (((host_no + 1) * 2000) +
832 (devip->target * 1000) + devip->lun);
833 target_dev_id = ((host_no + 1) * 2000) +
834 (devip->target * 1000) - 3;
835 len = scnprintf(lu_id_str, 6, "%d", lu_id_num);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700836 if (0 == cmd[2]) { /* supported vital product data pages */
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400837 arr[1] = cmd[2]; /*sanity */
838 n = 4;
839 arr[n++] = 0x0; /* this page */
840 arr[n++] = 0x80; /* unit serial number */
841 arr[n++] = 0x83; /* device identification */
842 arr[n++] = 0x84; /* software interface ident. */
843 arr[n++] = 0x85; /* management network addresses */
844 arr[n++] = 0x86; /* extended inquiry */
845 arr[n++] = 0x87; /* mode page policy */
846 arr[n++] = 0x88; /* SCSI ports */
847 arr[n++] = 0x89; /* ATA information */
848 arr[n++] = 0xb0; /* Block limits (SBC) */
Matthew Wilcoxeac6e8e42008-06-19 10:02:58 -0600849 arr[n++] = 0xb1; /* Block characteristics (SBC) */
Martin K. Petersen5b94e232011-03-08 02:08:11 -0500850 if (scsi_debug_lbp()) /* Logical Block Prov. (SBC) */
851 arr[n++] = 0xb2;
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400852 arr[3] = n - 4; /* number of supported VPD pages */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700853 } else if (0x80 == cmd[2]) { /* unit serial number */
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400854 arr[1] = cmd[2]; /*sanity */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700855 arr[3] = len;
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400856 memcpy(&arr[4], lu_id_str, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700857 } else if (0x83 == cmd[2]) { /* device identification */
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400858 arr[1] = cmd[2]; /*sanity */
Hannes Reinecke5a09e392006-10-20 09:58:47 +0200859 arr[3] = inquiry_evpd_83(&arr[4], port_group_id,
860 target_dev_id, lu_id_num,
861 lu_id_str, len);
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400862 } else if (0x84 == cmd[2]) { /* Software interface ident. */
863 arr[1] = cmd[2]; /*sanity */
864 arr[3] = inquiry_evpd_84(&arr[4]);
865 } else if (0x85 == cmd[2]) { /* Management network addresses */
866 arr[1] = cmd[2]; /*sanity */
867 arr[3] = inquiry_evpd_85(&arr[4]);
868 } else if (0x86 == cmd[2]) { /* extended inquiry */
869 arr[1] = cmd[2]; /*sanity */
870 arr[3] = 0x3c; /* number of following entries */
Martin K. Petersenc6a44282009-01-04 03:08:19 -0500871 if (scsi_debug_dif == SD_DIF_TYPE3_PROTECTION)
872 arr[4] = 0x4; /* SPT: GRD_CHK:1 */
873 else if (scsi_debug_dif)
874 arr[4] = 0x5; /* SPT: GRD_CHK:1, REF_CHK:1 */
875 else
876 arr[4] = 0x0; /* no protection stuff */
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400877 arr[5] = 0x7; /* head of q, ordered + simple q's */
878 } else if (0x87 == cmd[2]) { /* mode page policy */
879 arr[1] = cmd[2]; /*sanity */
880 arr[3] = 0x8; /* number of following entries */
881 arr[4] = 0x2; /* disconnect-reconnect mp */
882 arr[6] = 0x80; /* mlus, shared */
883 arr[8] = 0x18; /* protocol specific lu */
884 arr[10] = 0x82; /* mlus, per initiator port */
885 } else if (0x88 == cmd[2]) { /* SCSI Ports */
886 arr[1] = cmd[2]; /*sanity */
887 arr[3] = inquiry_evpd_88(&arr[4], target_dev_id);
888 } else if (0x89 == cmd[2]) { /* ATA information */
889 arr[1] = cmd[2]; /*sanity */
890 n = inquiry_evpd_89(&arr[4]);
891 arr[2] = (n >> 8);
892 arr[3] = (n & 0xff);
893 } else if (0xb0 == cmd[2]) { /* Block limits (SBC) */
894 arr[1] = cmd[2]; /*sanity */
895 arr[3] = inquiry_evpd_b0(&arr[4]);
Matthew Wilcoxeac6e8e42008-06-19 10:02:58 -0600896 } else if (0xb1 == cmd[2]) { /* Block characteristics (SBC) */
897 arr[1] = cmd[2]; /*sanity */
898 arr[3] = inquiry_evpd_b1(&arr[4]);
Martin K. Petersen5b94e232011-03-08 02:08:11 -0500899 } else if (0xb2 == cmd[2]) { /* Logical Block Prov. (SBC) */
Martin K. Petersen60147592010-08-19 11:49:00 -0400900 arr[1] = cmd[2]; /*sanity */
901 arr[3] = inquiry_evpd_b2(&arr[4]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700902 } else {
903 /* Illegal request, invalid field in cdb */
904 mk_sense_buffer(devip, ILLEGAL_REQUEST,
905 INVALID_FIELD_IN_CDB, 0);
Hannes Reinecke5a09e392006-10-20 09:58:47 +0200906 kfree(arr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700907 return check_condition_result;
908 }
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400909 len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len);
Hannes Reinecke5a09e392006-10-20 09:58:47 +0200910 ret = fill_from_dev_buffer(scp, arr,
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400911 min(len, SDEBUG_MAX_INQ_ARR_SZ));
Hannes Reinecke5a09e392006-10-20 09:58:47 +0200912 kfree(arr);
913 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700914 }
915 /* drops through here for a standard inquiry */
916 arr[1] = DEV_REMOVEABLE(target) ? 0x80 : 0; /* Removable disk */
917 arr[2] = scsi_debug_scsi_level;
918 arr[3] = 2; /* response_data_format==2 */
919 arr[4] = SDEBUG_LONG_INQ_SZ - 5;
Martin K. Petersenc6a44282009-01-04 03:08:19 -0500920 arr[5] = scsi_debug_dif ? 1 : 0; /* PROTECT bit */
Hannes Reinecke5a09e392006-10-20 09:58:47 +0200921 if (0 == scsi_debug_vpd_use_hostno)
922 arr[5] = 0x10; /* claim: implicit TGPS */
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400923 arr[6] = 0x10; /* claim: MultiP */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700924 /* arr[6] |= 0x40; ... claim: EncServ (enclosure services) */
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400925 arr[7] = 0xa; /* claim: LINKED + CMDQUE */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700926 memcpy(&arr[8], inq_vendor_id, 8);
927 memcpy(&arr[16], inq_product_id, 16);
928 memcpy(&arr[32], inq_product_rev, 4);
929 /* version descriptors (2 bytes each) follow */
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400930 arr[58] = 0x0; arr[59] = 0x77; /* SAM-3 ANSI */
931 arr[60] = 0x3; arr[61] = 0x14; /* SPC-3 ANSI */
932 n = 62;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700933 if (scsi_debug_ptype == 0) {
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400934 arr[n++] = 0x3; arr[n++] = 0x3d; /* SBC-2 ANSI */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700935 } else if (scsi_debug_ptype == 1) {
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400936 arr[n++] = 0x3; arr[n++] = 0x60; /* SSC-2 no version */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700937 }
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400938 arr[n++] = 0xc; arr[n++] = 0xf; /* SAS-1.1 rev 10 */
Hannes Reinecke5a09e392006-10-20 09:58:47 +0200939 ret = fill_from_dev_buffer(scp, arr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700940 min(alloc_len, SDEBUG_LONG_INQ_SZ));
Hannes Reinecke5a09e392006-10-20 09:58:47 +0200941 kfree(arr);
942 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700943}
944
945static int resp_requests(struct scsi_cmnd * scp,
946 struct sdebug_dev_info * devip)
947{
948 unsigned char * sbuff;
949 unsigned char *cmd = (unsigned char *)scp->cmnd;
950 unsigned char arr[SDEBUG_SENSE_LEN];
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400951 int want_dsense;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700952 int len = 18;
953
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400954 memset(arr, 0, sizeof(arr));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700955 if (devip->reset == 1)
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400956 mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0);
957 want_dsense = !!(cmd[1] & 1) || scsi_debug_dsense;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700958 sbuff = devip->sense_buff;
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400959 if ((iec_m_pg[2] & 0x4) && (6 == (iec_m_pg[3] & 0xf))) {
960 if (want_dsense) {
961 arr[0] = 0x72;
962 arr[1] = 0x0; /* NO_SENSE in sense_key */
963 arr[2] = THRESHOLD_EXCEEDED;
964 arr[3] = 0xff; /* TEST set and MRIE==6 */
965 } else {
966 arr[0] = 0x70;
967 arr[2] = 0x0; /* NO_SENSE in sense_key */
968 arr[7] = 0xa; /* 18 byte sense buffer */
969 arr[12] = THRESHOLD_EXCEEDED;
970 arr[13] = 0xff; /* TEST set and MRIE==6 */
971 }
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400972 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700973 memcpy(arr, sbuff, SDEBUG_SENSE_LEN);
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400974 if ((cmd[1] & 1) && (! scsi_debug_dsense)) {
975 /* DESC bit set and sense_buff in fixed format */
976 memset(arr, 0, sizeof(arr));
977 arr[0] = 0x72;
978 arr[1] = sbuff[2]; /* sense key */
979 arr[2] = sbuff[12]; /* asc */
980 arr[3] = sbuff[13]; /* ascq */
981 len = 8;
982 }
983 }
984 mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700985 return fill_from_dev_buffer(scp, arr, len);
986}
987
Douglas Gilbertc65b1442006-06-06 00:11:24 -0400988static int resp_start_stop(struct scsi_cmnd * scp,
989 struct sdebug_dev_info * devip)
990{
991 unsigned char *cmd = (unsigned char *)scp->cmnd;
992 int power_cond, errsts, start;
993
994 if ((errsts = check_readiness(scp, 1, devip)))
995 return errsts;
996 power_cond = (cmd[4] & 0xf0) >> 4;
997 if (power_cond) {
998 mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB,
999 0);
1000 return check_condition_result;
1001 }
1002 start = cmd[4] & 1;
1003 if (start == devip->stopped)
1004 devip->stopped = !start;
1005 return 0;
1006}
1007
FUJITA Tomonori28898872008-03-30 00:59:55 +09001008static sector_t get_sdebug_capacity(void)
1009{
1010 if (scsi_debug_virtual_gb > 0)
Douglas Gilbert5447ed62010-04-25 12:30:23 +02001011 return (sector_t)scsi_debug_virtual_gb *
1012 (1073741824 / scsi_debug_sector_size);
FUJITA Tomonori28898872008-03-30 00:59:55 +09001013 else
1014 return sdebug_store_sectors;
1015}
1016
Linus Torvalds1da177e2005-04-16 15:20:36 -07001017#define SDEBUG_READCAP_ARR_SZ 8
1018static int resp_readcap(struct scsi_cmnd * scp,
1019 struct sdebug_dev_info * devip)
1020{
1021 unsigned char arr[SDEBUG_READCAP_ARR_SZ];
Douglas Gilbertc65b1442006-06-06 00:11:24 -04001022 unsigned int capac;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001023 int errsts;
1024
Douglas Gilbertc65b1442006-06-06 00:11:24 -04001025 if ((errsts = check_readiness(scp, 1, devip)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001026 return errsts;
Douglas Gilbertc65b1442006-06-06 00:11:24 -04001027 /* following just in case virtual_gb changed */
FUJITA Tomonori28898872008-03-30 00:59:55 +09001028 sdebug_capacity = get_sdebug_capacity();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001029 memset(arr, 0, SDEBUG_READCAP_ARR_SZ);
Douglas Gilbertc65b1442006-06-06 00:11:24 -04001030 if (sdebug_capacity < 0xffffffff) {
1031 capac = (unsigned int)sdebug_capacity - 1;
1032 arr[0] = (capac >> 24);
1033 arr[1] = (capac >> 16) & 0xff;
1034 arr[2] = (capac >> 8) & 0xff;
1035 arr[3] = capac & 0xff;
1036 } else {
1037 arr[0] = 0xff;
1038 arr[1] = 0xff;
1039 arr[2] = 0xff;
1040 arr[3] = 0xff;
1041 }
Martin K. Petersen597136a2008-06-05 00:12:59 -04001042 arr[6] = (scsi_debug_sector_size >> 8) & 0xff;
1043 arr[7] = scsi_debug_sector_size & 0xff;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001044 return fill_from_dev_buffer(scp, arr, SDEBUG_READCAP_ARR_SZ);
1045}
1046
Douglas Gilbertc65b1442006-06-06 00:11:24 -04001047#define SDEBUG_READCAP16_ARR_SZ 32
1048static int resp_readcap16(struct scsi_cmnd * scp,
1049 struct sdebug_dev_info * devip)
1050{
1051 unsigned char *cmd = (unsigned char *)scp->cmnd;
1052 unsigned char arr[SDEBUG_READCAP16_ARR_SZ];
1053 unsigned long long capac;
1054 int errsts, k, alloc_len;
1055
1056 if ((errsts = check_readiness(scp, 1, devip)))
1057 return errsts;
1058 alloc_len = ((cmd[10] << 24) + (cmd[11] << 16) + (cmd[12] << 8)
1059 + cmd[13]);
1060 /* following just in case virtual_gb changed */
FUJITA Tomonori28898872008-03-30 00:59:55 +09001061 sdebug_capacity = get_sdebug_capacity();
Douglas Gilbertc65b1442006-06-06 00:11:24 -04001062 memset(arr, 0, SDEBUG_READCAP16_ARR_SZ);
1063 capac = sdebug_capacity - 1;
1064 for (k = 0; k < 8; ++k, capac >>= 8)
1065 arr[7 - k] = capac & 0xff;
Martin K. Petersen597136a2008-06-05 00:12:59 -04001066 arr[8] = (scsi_debug_sector_size >> 24) & 0xff;
1067 arr[9] = (scsi_debug_sector_size >> 16) & 0xff;
1068 arr[10] = (scsi_debug_sector_size >> 8) & 0xff;
1069 arr[11] = scsi_debug_sector_size & 0xff;
Martin K. Petersenea61fca2009-05-15 00:40:33 -04001070 arr[13] = scsi_debug_physblk_exp & 0xf;
1071 arr[14] = (scsi_debug_lowest_aligned >> 8) & 0x3f;
Martin K. Petersen44d92692009-10-15 14:45:27 -04001072
Martin K. Petersen5b94e232011-03-08 02:08:11 -05001073 if (scsi_debug_lbp())
1074 arr[14] |= 0x80; /* LBPME */
Martin K. Petersen44d92692009-10-15 14:45:27 -04001075
Martin K. Petersenea61fca2009-05-15 00:40:33 -04001076 arr[15] = scsi_debug_lowest_aligned & 0xff;
Martin K. Petersenc6a44282009-01-04 03:08:19 -05001077
1078 if (scsi_debug_dif) {
1079 arr[12] = (scsi_debug_dif - 1) << 1; /* P_TYPE */
1080 arr[12] |= 1; /* PROT_EN */
1081 }
1082
Douglas Gilbertc65b1442006-06-06 00:11:24 -04001083 return fill_from_dev_buffer(scp, arr,
1084 min(alloc_len, SDEBUG_READCAP16_ARR_SZ));
1085}
1086
Hannes Reinecke5a09e392006-10-20 09:58:47 +02001087#define SDEBUG_MAX_TGTPGS_ARR_SZ 1412
1088
1089static int resp_report_tgtpgs(struct scsi_cmnd * scp,
1090 struct sdebug_dev_info * devip)
1091{
1092 unsigned char *cmd = (unsigned char *)scp->cmnd;
1093 unsigned char * arr;
1094 int host_no = devip->sdbg_host->shost->host_no;
1095 int n, ret, alen, rlen;
1096 int port_group_a, port_group_b, port_a, port_b;
1097
1098 alen = ((cmd[6] << 24) + (cmd[7] << 16) + (cmd[8] << 8)
1099 + cmd[9]);
1100
Douglas Gilbert6f3cbf52007-01-05 00:05:25 -05001101 arr = kzalloc(SDEBUG_MAX_TGTPGS_ARR_SZ, GFP_ATOMIC);
1102 if (! arr)
1103 return DID_REQUEUE << 16;
Hannes Reinecke5a09e392006-10-20 09:58:47 +02001104 /*
1105 * EVPD page 0x88 states we have two ports, one
1106 * real and a fake port with no device connected.
1107 * So we create two port groups with one port each
1108 * and set the group with port B to unavailable.
1109 */
1110 port_a = 0x1; /* relative port A */
1111 port_b = 0x2; /* relative port B */
1112 port_group_a = (((host_no + 1) & 0x7f) << 8) +
1113 (devip->channel & 0x7f);
1114 port_group_b = (((host_no + 1) & 0x7f) << 8) +
1115 (devip->channel & 0x7f) + 0x80;
1116
1117 /*
1118 * The asymmetric access state is cycled according to the host_id.
1119 */
1120 n = 4;
1121 if (0 == scsi_debug_vpd_use_hostno) {
1122 arr[n++] = host_no % 3; /* Asymm access state */
1123 arr[n++] = 0x0F; /* claim: all states are supported */
1124 } else {
1125 arr[n++] = 0x0; /* Active/Optimized path */
1126 arr[n++] = 0x01; /* claim: only support active/optimized paths */
1127 }
1128 arr[n++] = (port_group_a >> 8) & 0xff;
1129 arr[n++] = port_group_a & 0xff;
1130 arr[n++] = 0; /* Reserved */
1131 arr[n++] = 0; /* Status code */
1132 arr[n++] = 0; /* Vendor unique */
1133 arr[n++] = 0x1; /* One port per group */
1134 arr[n++] = 0; /* Reserved */
1135 arr[n++] = 0; /* Reserved */
1136 arr[n++] = (port_a >> 8) & 0xff;
1137 arr[n++] = port_a & 0xff;
1138 arr[n++] = 3; /* Port unavailable */
1139 arr[n++] = 0x08; /* claim: only unavailalbe paths are supported */
1140 arr[n++] = (port_group_b >> 8) & 0xff;
1141 arr[n++] = port_group_b & 0xff;
1142 arr[n++] = 0; /* Reserved */
1143 arr[n++] = 0; /* Status code */
1144 arr[n++] = 0; /* Vendor unique */
1145 arr[n++] = 0x1; /* One port per group */
1146 arr[n++] = 0; /* Reserved */
1147 arr[n++] = 0; /* Reserved */
1148 arr[n++] = (port_b >> 8) & 0xff;
1149 arr[n++] = port_b & 0xff;
1150
1151 rlen = n - 4;
1152 arr[0] = (rlen >> 24) & 0xff;
1153 arr[1] = (rlen >> 16) & 0xff;
1154 arr[2] = (rlen >> 8) & 0xff;
1155 arr[3] = rlen & 0xff;
1156
1157 /*
1158 * Return the smallest value of either
1159 * - The allocated length
1160 * - The constructed command length
1161 * - The maximum array size
1162 */
1163 rlen = min(alen,n);
1164 ret = fill_from_dev_buffer(scp, arr,
1165 min(rlen, SDEBUG_MAX_TGTPGS_ARR_SZ));
1166 kfree(arr);
1167 return ret;
1168}
1169
Linus Torvalds1da177e2005-04-16 15:20:36 -07001170/* <<Following mode page info copied from ST318451LW>> */
1171
1172static int resp_err_recov_pg(unsigned char * p, int pcontrol, int target)
1173{ /* Read-Write Error Recovery page for mode_sense */
1174 unsigned char err_recov_pg[] = {0x1, 0xa, 0xc0, 11, 240, 0, 0, 0,
1175 5, 0, 0xff, 0xff};
1176
1177 memcpy(p, err_recov_pg, sizeof(err_recov_pg));
1178 if (1 == pcontrol)
1179 memset(p + 2, 0, sizeof(err_recov_pg) - 2);
1180 return sizeof(err_recov_pg);
1181}
1182
1183static int resp_disconnect_pg(unsigned char * p, int pcontrol, int target)
1184{ /* Disconnect-Reconnect page for mode_sense */
1185 unsigned char disconnect_pg[] = {0x2, 0xe, 128, 128, 0, 10, 0, 0,
1186 0, 0, 0, 0, 0, 0, 0, 0};
1187
1188 memcpy(p, disconnect_pg, sizeof(disconnect_pg));
1189 if (1 == pcontrol)
1190 memset(p + 2, 0, sizeof(disconnect_pg) - 2);
1191 return sizeof(disconnect_pg);
1192}
1193
1194static int resp_format_pg(unsigned char * p, int pcontrol, int target)
1195{ /* Format device page for mode_sense */
Martin K. Petersen597136a2008-06-05 00:12:59 -04001196 unsigned char format_pg[] = {0x3, 0x16, 0, 0, 0, 0, 0, 0,
1197 0, 0, 0, 0, 0, 0, 0, 0,
1198 0, 0, 0, 0, 0x40, 0, 0, 0};
Linus Torvalds1da177e2005-04-16 15:20:36 -07001199
Martin K. Petersen597136a2008-06-05 00:12:59 -04001200 memcpy(p, format_pg, sizeof(format_pg));
1201 p[10] = (sdebug_sectors_per >> 8) & 0xff;
1202 p[11] = sdebug_sectors_per & 0xff;
1203 p[12] = (scsi_debug_sector_size >> 8) & 0xff;
1204 p[13] = scsi_debug_sector_size & 0xff;
1205 if (DEV_REMOVEABLE(target))
1206 p[20] |= 0x20; /* should agree with INQUIRY */
1207 if (1 == pcontrol)
1208 memset(p + 2, 0, sizeof(format_pg) - 2);
1209 return sizeof(format_pg);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001210}
1211
1212static int resp_caching_pg(unsigned char * p, int pcontrol, int target)
1213{ /* Caching page for mode_sense */
1214 unsigned char caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0,
1215 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, 0, 0, 0, 0};
1216
1217 memcpy(p, caching_pg, sizeof(caching_pg));
1218 if (1 == pcontrol)
1219 memset(p + 2, 0, sizeof(caching_pg) - 2);
1220 return sizeof(caching_pg);
1221}
1222
1223static int resp_ctrl_m_pg(unsigned char * p, int pcontrol, int target)
1224{ /* Control mode page for mode_sense */
Douglas Gilbertc65b1442006-06-06 00:11:24 -04001225 unsigned char ch_ctrl_m_pg[] = {/* 0xa, 10, */ 0x6, 0, 0, 0, 0, 0,
1226 0, 0, 0, 0};
1227 unsigned char d_ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001228 0, 0, 0x2, 0x4b};
1229
1230 if (scsi_debug_dsense)
1231 ctrl_m_pg[2] |= 0x4;
Douglas Gilbertc65b1442006-06-06 00:11:24 -04001232 else
1233 ctrl_m_pg[2] &= ~0x4;
Martin K. Petersenc6a44282009-01-04 03:08:19 -05001234
1235 if (scsi_debug_ato)
1236 ctrl_m_pg[5] |= 0x80; /* ATO=1 */
1237
Linus Torvalds1da177e2005-04-16 15:20:36 -07001238 memcpy(p, ctrl_m_pg, sizeof(ctrl_m_pg));
1239 if (1 == pcontrol)
Douglas Gilbertc65b1442006-06-06 00:11:24 -04001240 memcpy(p + 2, ch_ctrl_m_pg, sizeof(ch_ctrl_m_pg));
1241 else if (2 == pcontrol)
1242 memcpy(p, d_ctrl_m_pg, sizeof(d_ctrl_m_pg));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001243 return sizeof(ctrl_m_pg);
1244}
1245
Douglas Gilbertc65b1442006-06-06 00:11:24 -04001246
Linus Torvalds1da177e2005-04-16 15:20:36 -07001247static int resp_iec_m_pg(unsigned char * p, int pcontrol, int target)
1248{ /* Informational Exceptions control mode page for mode_sense */
Douglas Gilbertc65b1442006-06-06 00:11:24 -04001249 unsigned char ch_iec_m_pg[] = {/* 0x1c, 0xa, */ 0x4, 0xf, 0, 0, 0, 0,
1250 0, 0, 0x0, 0x0};
1251 unsigned char d_iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0,
1252 0, 0, 0x0, 0x0};
1253
Linus Torvalds1da177e2005-04-16 15:20:36 -07001254 memcpy(p, iec_m_pg, sizeof(iec_m_pg));
1255 if (1 == pcontrol)
Douglas Gilbertc65b1442006-06-06 00:11:24 -04001256 memcpy(p + 2, ch_iec_m_pg, sizeof(ch_iec_m_pg));
1257 else if (2 == pcontrol)
1258 memcpy(p, d_iec_m_pg, sizeof(d_iec_m_pg));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001259 return sizeof(iec_m_pg);
1260}
1261
Douglas Gilbertc65b1442006-06-06 00:11:24 -04001262static int resp_sas_sf_m_pg(unsigned char * p, int pcontrol, int target)
1263{ /* SAS SSP mode page - short format for mode_sense */
1264 unsigned char sas_sf_m_pg[] = {0x19, 0x6,
1265 0x6, 0x0, 0x7, 0xd0, 0x0, 0x0};
1266
1267 memcpy(p, sas_sf_m_pg, sizeof(sas_sf_m_pg));
1268 if (1 == pcontrol)
1269 memset(p + 2, 0, sizeof(sas_sf_m_pg) - 2);
1270 return sizeof(sas_sf_m_pg);
1271}
1272
1273
1274static int resp_sas_pcd_m_spg(unsigned char * p, int pcontrol, int target,
1275 int target_dev_id)
1276{ /* SAS phy control and discover mode page for mode_sense */
1277 unsigned char sas_pcd_m_pg[] = {0x59, 0x1, 0, 0x64, 0, 0x6, 0, 2,
1278 0, 0, 0, 0, 0x10, 0x9, 0x8, 0x0,
1279 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0,
1280 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1,
1281 0x2, 0, 0, 0, 0, 0, 0, 0,
1282 0x88, 0x99, 0, 0, 0, 0, 0, 0,
1283 0, 0, 0, 0, 0, 0, 0, 0,
1284 0, 1, 0, 0, 0x10, 0x9, 0x8, 0x0,
1285 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0,
1286 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1,
1287 0x3, 0, 0, 0, 0, 0, 0, 0,
1288 0x88, 0x99, 0, 0, 0, 0, 0, 0,
1289 0, 0, 0, 0, 0, 0, 0, 0,
1290 };
1291 int port_a, port_b;
1292
1293 port_a = target_dev_id + 1;
1294 port_b = port_a + 1;
1295 memcpy(p, sas_pcd_m_pg, sizeof(sas_pcd_m_pg));
1296 p[20] = (port_a >> 24);
1297 p[21] = (port_a >> 16) & 0xff;
1298 p[22] = (port_a >> 8) & 0xff;
1299 p[23] = port_a & 0xff;
1300 p[48 + 20] = (port_b >> 24);
1301 p[48 + 21] = (port_b >> 16) & 0xff;
1302 p[48 + 22] = (port_b >> 8) & 0xff;
1303 p[48 + 23] = port_b & 0xff;
1304 if (1 == pcontrol)
1305 memset(p + 4, 0, sizeof(sas_pcd_m_pg) - 4);
1306 return sizeof(sas_pcd_m_pg);
1307}
1308
1309static int resp_sas_sha_m_spg(unsigned char * p, int pcontrol)
1310{ /* SAS SSP shared protocol specific port mode subpage */
1311 unsigned char sas_sha_m_pg[] = {0x59, 0x2, 0, 0xc, 0, 0x6, 0x10, 0,
1312 0, 0, 0, 0, 0, 0, 0, 0,
1313 };
1314
1315 memcpy(p, sas_sha_m_pg, sizeof(sas_sha_m_pg));
1316 if (1 == pcontrol)
1317 memset(p + 4, 0, sizeof(sas_sha_m_pg) - 4);
1318 return sizeof(sas_sha_m_pg);
1319}
1320
Linus Torvalds1da177e2005-04-16 15:20:36 -07001321#define SDEBUG_MAX_MSENSE_SZ 256
1322
1323static int resp_mode_sense(struct scsi_cmnd * scp, int target,
1324 struct sdebug_dev_info * devip)
1325{
Douglas Gilbert23183912006-09-16 20:30:47 -04001326 unsigned char dbd, llbaa;
1327 int pcontrol, pcode, subpcode, bd_len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001328 unsigned char dev_spec;
Douglas Gilbert23183912006-09-16 20:30:47 -04001329 int k, alloc_len, msense_6, offset, len, errsts, target_dev_id;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001330 unsigned char * ap;
1331 unsigned char arr[SDEBUG_MAX_MSENSE_SZ];
1332 unsigned char *cmd = (unsigned char *)scp->cmnd;
1333
Douglas Gilbertc65b1442006-06-06 00:11:24 -04001334 if ((errsts = check_readiness(scp, 1, devip)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001335 return errsts;
Douglas Gilbert23183912006-09-16 20:30:47 -04001336 dbd = !!(cmd[1] & 0x8);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001337 pcontrol = (cmd[2] & 0xc0) >> 6;
1338 pcode = cmd[2] & 0x3f;
1339 subpcode = cmd[3];
1340 msense_6 = (MODE_SENSE == cmd[0]);
Douglas Gilbert23183912006-09-16 20:30:47 -04001341 llbaa = msense_6 ? 0 : !!(cmd[1] & 0x10);
1342 if ((0 == scsi_debug_ptype) && (0 == dbd))
1343 bd_len = llbaa ? 16 : 8;
1344 else
1345 bd_len = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001346 alloc_len = msense_6 ? cmd[4] : ((cmd[7] << 8) | cmd[8]);
1347 memset(arr, 0, SDEBUG_MAX_MSENSE_SZ);
1348 if (0x3 == pcontrol) { /* Saving values not supported */
1349 mk_sense_buffer(devip, ILLEGAL_REQUEST, SAVING_PARAMS_UNSUP,
1350 0);
1351 return check_condition_result;
1352 }
Douglas Gilbertc65b1442006-06-06 00:11:24 -04001353 target_dev_id = ((devip->sdbg_host->shost->host_no + 1) * 2000) +
1354 (devip->target * 1000) - 3;
Douglas Gilbert23183912006-09-16 20:30:47 -04001355 /* set DPOFUA bit for disks */
1356 if (0 == scsi_debug_ptype)
1357 dev_spec = (DEV_READONLY(target) ? 0x80 : 0x0) | 0x10;
1358 else
1359 dev_spec = 0x0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001360 if (msense_6) {
1361 arr[2] = dev_spec;
Douglas Gilbert23183912006-09-16 20:30:47 -04001362 arr[3] = bd_len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001363 offset = 4;
1364 } else {
1365 arr[3] = dev_spec;
Douglas Gilbert23183912006-09-16 20:30:47 -04001366 if (16 == bd_len)
1367 arr[4] = 0x1; /* set LONGLBA bit */
1368 arr[7] = bd_len; /* assume 255 or less */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001369 offset = 8;
1370 }
1371 ap = arr + offset;
FUJITA Tomonori28898872008-03-30 00:59:55 +09001372 if ((bd_len > 0) && (!sdebug_capacity))
1373 sdebug_capacity = get_sdebug_capacity();
1374
Douglas Gilbert23183912006-09-16 20:30:47 -04001375 if (8 == bd_len) {
1376 if (sdebug_capacity > 0xfffffffe) {
1377 ap[0] = 0xff;
1378 ap[1] = 0xff;
1379 ap[2] = 0xff;
1380 ap[3] = 0xff;
1381 } else {
1382 ap[0] = (sdebug_capacity >> 24) & 0xff;
1383 ap[1] = (sdebug_capacity >> 16) & 0xff;
1384 ap[2] = (sdebug_capacity >> 8) & 0xff;
1385 ap[3] = sdebug_capacity & 0xff;
1386 }
Martin K. Petersen597136a2008-06-05 00:12:59 -04001387 ap[6] = (scsi_debug_sector_size >> 8) & 0xff;
1388 ap[7] = scsi_debug_sector_size & 0xff;
Douglas Gilbert23183912006-09-16 20:30:47 -04001389 offset += bd_len;
1390 ap = arr + offset;
1391 } else if (16 == bd_len) {
1392 unsigned long long capac = sdebug_capacity;
1393
1394 for (k = 0; k < 8; ++k, capac >>= 8)
1395 ap[7 - k] = capac & 0xff;
Martin K. Petersen597136a2008-06-05 00:12:59 -04001396 ap[12] = (scsi_debug_sector_size >> 24) & 0xff;
1397 ap[13] = (scsi_debug_sector_size >> 16) & 0xff;
1398 ap[14] = (scsi_debug_sector_size >> 8) & 0xff;
1399 ap[15] = scsi_debug_sector_size & 0xff;
Douglas Gilbert23183912006-09-16 20:30:47 -04001400 offset += bd_len;
1401 ap = arr + offset;
1402 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001403
Douglas Gilbertc65b1442006-06-06 00:11:24 -04001404 if ((subpcode > 0x0) && (subpcode < 0xff) && (0x19 != pcode)) {
1405 /* TODO: Control Extension page */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001406 mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB,
1407 0);
1408 return check_condition_result;
1409 }
1410 switch (pcode) {
1411 case 0x1: /* Read-Write error recovery page, direct access */
1412 len = resp_err_recov_pg(ap, pcontrol, target);
1413 offset += len;
1414 break;
1415 case 0x2: /* Disconnect-Reconnect page, all devices */
1416 len = resp_disconnect_pg(ap, pcontrol, target);
1417 offset += len;
1418 break;
1419 case 0x3: /* Format device page, direct access */
1420 len = resp_format_pg(ap, pcontrol, target);
1421 offset += len;
1422 break;
1423 case 0x8: /* Caching page, direct access */
1424 len = resp_caching_pg(ap, pcontrol, target);
1425 offset += len;
1426 break;
1427 case 0xa: /* Control Mode page, all devices */
1428 len = resp_ctrl_m_pg(ap, pcontrol, target);
1429 offset += len;
1430 break;
Douglas Gilbertc65b1442006-06-06 00:11:24 -04001431 case 0x19: /* if spc==1 then sas phy, control+discover */
1432 if ((subpcode > 0x2) && (subpcode < 0xff)) {
1433 mk_sense_buffer(devip, ILLEGAL_REQUEST,
1434 INVALID_FIELD_IN_CDB, 0);
1435 return check_condition_result;
1436 }
1437 len = 0;
1438 if ((0x0 == subpcode) || (0xff == subpcode))
1439 len += resp_sas_sf_m_pg(ap + len, pcontrol, target);
1440 if ((0x1 == subpcode) || (0xff == subpcode))
1441 len += resp_sas_pcd_m_spg(ap + len, pcontrol, target,
1442 target_dev_id);
1443 if ((0x2 == subpcode) || (0xff == subpcode))
1444 len += resp_sas_sha_m_spg(ap + len, pcontrol);
1445 offset += len;
1446 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001447 case 0x1c: /* Informational Exceptions Mode page, all devices */
1448 len = resp_iec_m_pg(ap, pcontrol, target);
1449 offset += len;
1450 break;
1451 case 0x3f: /* Read all Mode pages */
Douglas Gilbertc65b1442006-06-06 00:11:24 -04001452 if ((0 == subpcode) || (0xff == subpcode)) {
1453 len = resp_err_recov_pg(ap, pcontrol, target);
1454 len += resp_disconnect_pg(ap + len, pcontrol, target);
1455 len += resp_format_pg(ap + len, pcontrol, target);
1456 len += resp_caching_pg(ap + len, pcontrol, target);
1457 len += resp_ctrl_m_pg(ap + len, pcontrol, target);
1458 len += resp_sas_sf_m_pg(ap + len, pcontrol, target);
1459 if (0xff == subpcode) {
1460 len += resp_sas_pcd_m_spg(ap + len, pcontrol,
1461 target, target_dev_id);
1462 len += resp_sas_sha_m_spg(ap + len, pcontrol);
1463 }
1464 len += resp_iec_m_pg(ap + len, pcontrol, target);
1465 } else {
1466 mk_sense_buffer(devip, ILLEGAL_REQUEST,
1467 INVALID_FIELD_IN_CDB, 0);
1468 return check_condition_result;
1469 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001470 offset += len;
1471 break;
1472 default:
1473 mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB,
1474 0);
1475 return check_condition_result;
1476 }
1477 if (msense_6)
1478 arr[0] = offset - 1;
1479 else {
1480 arr[0] = ((offset - 2) >> 8) & 0xff;
1481 arr[1] = (offset - 2) & 0xff;
1482 }
1483 return fill_from_dev_buffer(scp, arr, min(alloc_len, offset));
1484}
1485
Douglas Gilbertc65b1442006-06-06 00:11:24 -04001486#define SDEBUG_MAX_MSELECT_SZ 512
1487
1488static int resp_mode_select(struct scsi_cmnd * scp, int mselect6,
1489 struct sdebug_dev_info * devip)
1490{
1491 int pf, sp, ps, md_len, bd_len, off, spf, pg_len;
1492 int param_len, res, errsts, mpage;
1493 unsigned char arr[SDEBUG_MAX_MSELECT_SZ];
1494 unsigned char *cmd = (unsigned char *)scp->cmnd;
1495
1496 if ((errsts = check_readiness(scp, 1, devip)))
1497 return errsts;
1498 memset(arr, 0, sizeof(arr));
1499 pf = cmd[1] & 0x10;
1500 sp = cmd[1] & 0x1;
1501 param_len = mselect6 ? cmd[4] : ((cmd[7] << 8) + cmd[8]);
1502 if ((0 == pf) || sp || (param_len > SDEBUG_MAX_MSELECT_SZ)) {
1503 mk_sense_buffer(devip, ILLEGAL_REQUEST,
1504 INVALID_FIELD_IN_CDB, 0);
1505 return check_condition_result;
1506 }
1507 res = fetch_to_dev_buffer(scp, arr, param_len);
1508 if (-1 == res)
1509 return (DID_ERROR << 16);
1510 else if ((res < param_len) &&
1511 (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts))
1512 printk(KERN_INFO "scsi_debug: mode_select: cdb indicated=%d, "
1513 " IO sent=%d bytes\n", param_len, res);
1514 md_len = mselect6 ? (arr[0] + 1) : ((arr[0] << 8) + arr[1] + 2);
1515 bd_len = mselect6 ? arr[3] : ((arr[6] << 8) + arr[7]);
Douglas Gilbert23183912006-09-16 20:30:47 -04001516 if (md_len > 2) {
Douglas Gilbertc65b1442006-06-06 00:11:24 -04001517 mk_sense_buffer(devip, ILLEGAL_REQUEST,
1518 INVALID_FIELD_IN_PARAM_LIST, 0);
1519 return check_condition_result;
1520 }
1521 off = bd_len + (mselect6 ? 4 : 8);
1522 mpage = arr[off] & 0x3f;
1523 ps = !!(arr[off] & 0x80);
1524 if (ps) {
1525 mk_sense_buffer(devip, ILLEGAL_REQUEST,
1526 INVALID_FIELD_IN_PARAM_LIST, 0);
1527 return check_condition_result;
1528 }
1529 spf = !!(arr[off] & 0x40);
1530 pg_len = spf ? ((arr[off + 2] << 8) + arr[off + 3] + 4) :
1531 (arr[off + 1] + 2);
1532 if ((pg_len + off) > param_len) {
1533 mk_sense_buffer(devip, ILLEGAL_REQUEST,
1534 PARAMETER_LIST_LENGTH_ERR, 0);
1535 return check_condition_result;
1536 }
1537 switch (mpage) {
1538 case 0xa: /* Control Mode page */
1539 if (ctrl_m_pg[1] == arr[off + 1]) {
1540 memcpy(ctrl_m_pg + 2, arr + off + 2,
1541 sizeof(ctrl_m_pg) - 2);
1542 scsi_debug_dsense = !!(ctrl_m_pg[2] & 0x4);
1543 return 0;
1544 }
1545 break;
1546 case 0x1c: /* Informational Exceptions Mode page */
1547 if (iec_m_pg[1] == arr[off + 1]) {
1548 memcpy(iec_m_pg + 2, arr + off + 2,
1549 sizeof(iec_m_pg) - 2);
1550 return 0;
1551 }
1552 break;
1553 default:
1554 break;
1555 }
1556 mk_sense_buffer(devip, ILLEGAL_REQUEST,
1557 INVALID_FIELD_IN_PARAM_LIST, 0);
1558 return check_condition_result;
1559}
1560
1561static int resp_temp_l_pg(unsigned char * arr)
1562{
1563 unsigned char temp_l_pg[] = {0x0, 0x0, 0x3, 0x2, 0x0, 38,
1564 0x0, 0x1, 0x3, 0x2, 0x0, 65,
1565 };
1566
1567 memcpy(arr, temp_l_pg, sizeof(temp_l_pg));
1568 return sizeof(temp_l_pg);
1569}
1570
1571static int resp_ie_l_pg(unsigned char * arr)
1572{
1573 unsigned char ie_l_pg[] = {0x0, 0x0, 0x3, 0x3, 0x0, 0x0, 38,
1574 };
1575
1576 memcpy(arr, ie_l_pg, sizeof(ie_l_pg));
1577 if (iec_m_pg[2] & 0x4) { /* TEST bit set */
1578 arr[4] = THRESHOLD_EXCEEDED;
1579 arr[5] = 0xff;
1580 }
1581 return sizeof(ie_l_pg);
1582}
1583
1584#define SDEBUG_MAX_LSENSE_SZ 512
1585
1586static int resp_log_sense(struct scsi_cmnd * scp,
1587 struct sdebug_dev_info * devip)
1588{
Douglas Gilbert23183912006-09-16 20:30:47 -04001589 int ppc, sp, pcontrol, pcode, subpcode, alloc_len, errsts, len, n;
Douglas Gilbertc65b1442006-06-06 00:11:24 -04001590 unsigned char arr[SDEBUG_MAX_LSENSE_SZ];
1591 unsigned char *cmd = (unsigned char *)scp->cmnd;
1592
1593 if ((errsts = check_readiness(scp, 1, devip)))
1594 return errsts;
1595 memset(arr, 0, sizeof(arr));
1596 ppc = cmd[1] & 0x2;
1597 sp = cmd[1] & 0x1;
1598 if (ppc || sp) {
1599 mk_sense_buffer(devip, ILLEGAL_REQUEST,
1600 INVALID_FIELD_IN_CDB, 0);
1601 return check_condition_result;
1602 }
1603 pcontrol = (cmd[2] & 0xc0) >> 6;
1604 pcode = cmd[2] & 0x3f;
Douglas Gilbert23183912006-09-16 20:30:47 -04001605 subpcode = cmd[3] & 0xff;
Douglas Gilbertc65b1442006-06-06 00:11:24 -04001606 alloc_len = (cmd[7] << 8) + cmd[8];
1607 arr[0] = pcode;
Douglas Gilbert23183912006-09-16 20:30:47 -04001608 if (0 == subpcode) {
1609 switch (pcode) {
1610 case 0x0: /* Supported log pages log page */
1611 n = 4;
1612 arr[n++] = 0x0; /* this page */
1613 arr[n++] = 0xd; /* Temperature */
1614 arr[n++] = 0x2f; /* Informational exceptions */
1615 arr[3] = n - 4;
1616 break;
1617 case 0xd: /* Temperature log page */
1618 arr[3] = resp_temp_l_pg(arr + 4);
1619 break;
1620 case 0x2f: /* Informational exceptions log page */
1621 arr[3] = resp_ie_l_pg(arr + 4);
1622 break;
1623 default:
1624 mk_sense_buffer(devip, ILLEGAL_REQUEST,
1625 INVALID_FIELD_IN_CDB, 0);
1626 return check_condition_result;
1627 }
1628 } else if (0xff == subpcode) {
1629 arr[0] |= 0x40;
1630 arr[1] = subpcode;
1631 switch (pcode) {
1632 case 0x0: /* Supported log pages and subpages log page */
1633 n = 4;
1634 arr[n++] = 0x0;
1635 arr[n++] = 0x0; /* 0,0 page */
1636 arr[n++] = 0x0;
1637 arr[n++] = 0xff; /* this page */
1638 arr[n++] = 0xd;
1639 arr[n++] = 0x0; /* Temperature */
1640 arr[n++] = 0x2f;
1641 arr[n++] = 0x0; /* Informational exceptions */
1642 arr[3] = n - 4;
1643 break;
1644 case 0xd: /* Temperature subpages */
1645 n = 4;
1646 arr[n++] = 0xd;
1647 arr[n++] = 0x0; /* Temperature */
1648 arr[3] = n - 4;
1649 break;
1650 case 0x2f: /* Informational exceptions subpages */
1651 n = 4;
1652 arr[n++] = 0x2f;
1653 arr[n++] = 0x0; /* Informational exceptions */
1654 arr[3] = n - 4;
1655 break;
1656 default:
1657 mk_sense_buffer(devip, ILLEGAL_REQUEST,
1658 INVALID_FIELD_IN_CDB, 0);
1659 return check_condition_result;
1660 }
1661 } else {
Douglas Gilbertc65b1442006-06-06 00:11:24 -04001662 mk_sense_buffer(devip, ILLEGAL_REQUEST,
1663 INVALID_FIELD_IN_CDB, 0);
1664 return check_condition_result;
1665 }
1666 len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len);
1667 return fill_from_dev_buffer(scp, arr,
1668 min(len, SDEBUG_MAX_INQ_ARR_SZ));
1669}
1670
FUJITA Tomonori19789102008-03-30 00:59:56 +09001671static int check_device_access_params(struct sdebug_dev_info *devi,
1672 unsigned long long lba, unsigned int num)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001673{
Douglas Gilbertc65b1442006-06-06 00:11:24 -04001674 if (lba + num > sdebug_capacity) {
FUJITA Tomonori19789102008-03-30 00:59:56 +09001675 mk_sense_buffer(devi, ILLEGAL_REQUEST, ADDR_OUT_OF_RANGE, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001676 return check_condition_result;
1677 }
Douglas Gilbertc65b1442006-06-06 00:11:24 -04001678 /* transfer length excessive (tie in to block limits VPD page) */
1679 if (num > sdebug_store_sectors) {
FUJITA Tomonori19789102008-03-30 00:59:56 +09001680 mk_sense_buffer(devi, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0);
Douglas Gilbertc65b1442006-06-06 00:11:24 -04001681 return check_condition_result;
1682 }
FUJITA Tomonori19789102008-03-30 00:59:56 +09001683 return 0;
1684}
1685
1686static int do_device_access(struct scsi_cmnd *scmd,
1687 struct sdebug_dev_info *devi,
1688 unsigned long long lba, unsigned int num, int write)
1689{
1690 int ret;
Darrick J. Wonga361cc02011-01-31 18:47:54 -08001691 unsigned long long block, rest = 0;
FUJITA Tomonori19789102008-03-30 00:59:56 +09001692 int (*func)(struct scsi_cmnd *, unsigned char *, int);
1693
1694 func = write ? fetch_to_dev_buffer : fill_from_dev_buffer;
1695
1696 block = do_div(lba, sdebug_store_sectors);
1697 if (block + num > sdebug_store_sectors)
1698 rest = block + num - sdebug_store_sectors;
1699
Martin K. Petersen597136a2008-06-05 00:12:59 -04001700 ret = func(scmd, fake_storep + (block * scsi_debug_sector_size),
1701 (num - rest) * scsi_debug_sector_size);
FUJITA Tomonori19789102008-03-30 00:59:56 +09001702 if (!ret && rest)
Martin K. Petersen597136a2008-06-05 00:12:59 -04001703 ret = func(scmd, fake_storep, rest * scsi_debug_sector_size);
FUJITA Tomonori19789102008-03-30 00:59:56 +09001704
1705 return ret;
1706}
1707
Martin K. Petersenc6a44282009-01-04 03:08:19 -05001708static int prot_verify_read(struct scsi_cmnd *SCpnt, sector_t start_sec,
Martin K. Petersen395cef02009-09-18 17:33:03 -04001709 unsigned int sectors, u32 ei_lba)
Martin K. Petersenc6a44282009-01-04 03:08:19 -05001710{
1711 unsigned int i, resid;
1712 struct scatterlist *psgl;
1713 struct sd_dif_tuple *sdt;
1714 sector_t sector;
1715 sector_t tmp_sec = start_sec;
1716 void *paddr;
1717
1718 start_sec = do_div(tmp_sec, sdebug_store_sectors);
1719
1720 sdt = (struct sd_dif_tuple *)(dif_storep + dif_offset(start_sec));
1721
1722 for (i = 0 ; i < sectors ; i++) {
1723 u16 csum;
1724
1725 if (sdt[i].app_tag == 0xffff)
1726 continue;
1727
1728 sector = start_sec + i;
1729
1730 switch (scsi_debug_guard) {
1731 case 1:
1732 csum = ip_compute_csum(fake_storep +
1733 sector * scsi_debug_sector_size,
1734 scsi_debug_sector_size);
1735 break;
1736 case 0:
1737 csum = crc_t10dif(fake_storep +
1738 sector * scsi_debug_sector_size,
1739 scsi_debug_sector_size);
1740 csum = cpu_to_be16(csum);
1741 break;
1742 default:
1743 BUG();
1744 }
1745
1746 if (sdt[i].guard_tag != csum) {
1747 printk(KERN_ERR "%s: GUARD check failed on sector %lu" \
1748 " rcvd 0x%04x, data 0x%04x\n", __func__,
1749 (unsigned long)sector,
1750 be16_to_cpu(sdt[i].guard_tag),
1751 be16_to_cpu(csum));
1752 dif_errors++;
1753 return 0x01;
1754 }
1755
Martin K. Petersen395cef02009-09-18 17:33:03 -04001756 if (scsi_debug_dif == SD_DIF_TYPE1_PROTECTION &&
Martin K. Petersenc6a44282009-01-04 03:08:19 -05001757 be32_to_cpu(sdt[i].ref_tag) != (sector & 0xffffffff)) {
1758 printk(KERN_ERR "%s: REF check failed on sector %lu\n",
1759 __func__, (unsigned long)sector);
1760 dif_errors++;
1761 return 0x03;
1762 }
Martin K. Petersen395cef02009-09-18 17:33:03 -04001763
1764 if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION &&
1765 be32_to_cpu(sdt[i].ref_tag) != ei_lba) {
1766 printk(KERN_ERR "%s: REF check failed on sector %lu\n",
1767 __func__, (unsigned long)sector);
1768 dif_errors++;
1769 return 0x03;
1770 }
1771
1772 ei_lba++;
Martin K. Petersenc6a44282009-01-04 03:08:19 -05001773 }
1774
1775 resid = sectors * 8; /* Bytes of protection data to copy into sgl */
1776 sector = start_sec;
1777
1778 scsi_for_each_prot_sg(SCpnt, psgl, scsi_prot_sg_count(SCpnt), i) {
1779 int len = min(psgl->length, resid);
1780
1781 paddr = kmap_atomic(sg_page(psgl), KM_IRQ0) + psgl->offset;
1782 memcpy(paddr, dif_storep + dif_offset(sector), len);
1783
1784 sector += len >> 3;
1785 if (sector >= sdebug_store_sectors) {
1786 /* Force wrap */
1787 tmp_sec = sector;
1788 sector = do_div(tmp_sec, sdebug_store_sectors);
1789 }
1790 resid -= len;
1791 kunmap_atomic(paddr, KM_IRQ0);
1792 }
1793
1794 dix_reads++;
1795
1796 return 0;
1797}
1798
FUJITA Tomonori19789102008-03-30 00:59:56 +09001799static int resp_read(struct scsi_cmnd *SCpnt, unsigned long long lba,
Martin K. Petersen395cef02009-09-18 17:33:03 -04001800 unsigned int num, struct sdebug_dev_info *devip,
1801 u32 ei_lba)
FUJITA Tomonori19789102008-03-30 00:59:56 +09001802{
1803 unsigned long iflags;
1804 int ret;
1805
1806 ret = check_device_access_params(devip, lba, num);
1807 if (ret)
1808 return ret;
1809
Linus Torvalds1da177e2005-04-16 15:20:36 -07001810 if ((SCSI_DEBUG_OPT_MEDIUM_ERR & scsi_debug_opts) &&
Douglas Gilbert32f7ef72011-03-11 10:43:35 -05001811 (lba <= (OPT_MEDIUM_ERR_ADDR + OPT_MEDIUM_ERR_NUM - 1)) &&
Douglas Gilbertc65b1442006-06-06 00:11:24 -04001812 ((lba + num) > OPT_MEDIUM_ERR_ADDR)) {
1813 /* claim unrecoverable read error */
Douglas Gilbert32f7ef72011-03-11 10:43:35 -05001814 mk_sense_buffer(devip, MEDIUM_ERROR, UNRECOVERED_READ_ERR, 0);
Douglas Gilbertc65b1442006-06-06 00:11:24 -04001815 /* set info field and valid bit for fixed descriptor */
1816 if (0x70 == (devip->sense_buff[0] & 0x7f)) {
1817 devip->sense_buff[0] |= 0x80; /* Valid bit */
Douglas Gilbert32f7ef72011-03-11 10:43:35 -05001818 ret = (lba < OPT_MEDIUM_ERR_ADDR)
1819 ? OPT_MEDIUM_ERR_ADDR : (int)lba;
Douglas Gilbertc65b1442006-06-06 00:11:24 -04001820 devip->sense_buff[3] = (ret >> 24) & 0xff;
1821 devip->sense_buff[4] = (ret >> 16) & 0xff;
1822 devip->sense_buff[5] = (ret >> 8) & 0xff;
1823 devip->sense_buff[6] = ret & 0xff;
1824 }
Douglas Gilberta87e3a62010-12-17 19:16:06 -05001825 scsi_set_resid(SCpnt, scsi_bufflen(SCpnt));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001826 return check_condition_result;
1827 }
Martin K. Petersenc6a44282009-01-04 03:08:19 -05001828
1829 /* DIX + T10 DIF */
1830 if (scsi_debug_dix && scsi_prot_sg_count(SCpnt)) {
Martin K. Petersen395cef02009-09-18 17:33:03 -04001831 int prot_ret = prot_verify_read(SCpnt, lba, num, ei_lba);
Martin K. Petersenc6a44282009-01-04 03:08:19 -05001832
1833 if (prot_ret) {
1834 mk_sense_buffer(devip, ABORTED_COMMAND, 0x10, prot_ret);
1835 return illegal_condition_result;
1836 }
1837 }
1838
Linus Torvalds1da177e2005-04-16 15:20:36 -07001839 read_lock_irqsave(&atomic_rw, iflags);
FUJITA Tomonori19789102008-03-30 00:59:56 +09001840 ret = do_device_access(SCpnt, devip, lba, num, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001841 read_unlock_irqrestore(&atomic_rw, iflags);
1842 return ret;
1843}
1844
Martin K. Petersenc6a44282009-01-04 03:08:19 -05001845void dump_sector(unsigned char *buf, int len)
1846{
1847 int i, j;
1848
1849 printk(KERN_ERR ">>> Sector Dump <<<\n");
1850
1851 for (i = 0 ; i < len ; i += 16) {
1852 printk(KERN_ERR "%04d: ", i);
1853
1854 for (j = 0 ; j < 16 ; j++) {
1855 unsigned char c = buf[i+j];
1856 if (c >= 0x20 && c < 0x7e)
1857 printk(" %c ", buf[i+j]);
1858 else
1859 printk("%02x ", buf[i+j]);
1860 }
1861
1862 printk("\n");
1863 }
1864}
1865
1866static int prot_verify_write(struct scsi_cmnd *SCpnt, sector_t start_sec,
Martin K. Petersen395cef02009-09-18 17:33:03 -04001867 unsigned int sectors, u32 ei_lba)
Martin K. Petersenc6a44282009-01-04 03:08:19 -05001868{
1869 int i, j, ret;
1870 struct sd_dif_tuple *sdt;
1871 struct scatterlist *dsgl = scsi_sglist(SCpnt);
1872 struct scatterlist *psgl = scsi_prot_sglist(SCpnt);
1873 void *daddr, *paddr;
1874 sector_t tmp_sec = start_sec;
1875 sector_t sector;
1876 int ppage_offset;
1877 unsigned short csum;
1878
1879 sector = do_div(tmp_sec, sdebug_store_sectors);
1880
Martin K. Petersenc6a44282009-01-04 03:08:19 -05001881 BUG_ON(scsi_sg_count(SCpnt) == 0);
1882 BUG_ON(scsi_prot_sg_count(SCpnt) == 0);
1883
1884 paddr = kmap_atomic(sg_page(psgl), KM_IRQ1) + psgl->offset;
1885 ppage_offset = 0;
1886
1887 /* For each data page */
1888 scsi_for_each_sg(SCpnt, dsgl, scsi_sg_count(SCpnt), i) {
1889 daddr = kmap_atomic(sg_page(dsgl), KM_IRQ0) + dsgl->offset;
1890
1891 /* For each sector-sized chunk in data page */
1892 for (j = 0 ; j < dsgl->length ; j += scsi_debug_sector_size) {
1893
1894 /* If we're at the end of the current
1895 * protection page advance to the next one
1896 */
1897 if (ppage_offset >= psgl->length) {
1898 kunmap_atomic(paddr, KM_IRQ1);
1899 psgl = sg_next(psgl);
1900 BUG_ON(psgl == NULL);
1901 paddr = kmap_atomic(sg_page(psgl), KM_IRQ1)
1902 + psgl->offset;
1903 ppage_offset = 0;
1904 }
1905
1906 sdt = paddr + ppage_offset;
1907
1908 switch (scsi_debug_guard) {
1909 case 1:
1910 csum = ip_compute_csum(daddr,
1911 scsi_debug_sector_size);
1912 break;
1913 case 0:
1914 csum = cpu_to_be16(crc_t10dif(daddr,
1915 scsi_debug_sector_size));
1916 break;
1917 default:
1918 BUG();
1919 ret = 0;
1920 goto out;
1921 }
1922
1923 if (sdt->guard_tag != csum) {
1924 printk(KERN_ERR
1925 "%s: GUARD check failed on sector %lu " \
1926 "rcvd 0x%04x, calculated 0x%04x\n",
1927 __func__, (unsigned long)sector,
1928 be16_to_cpu(sdt->guard_tag),
1929 be16_to_cpu(csum));
1930 ret = 0x01;
1931 dump_sector(daddr, scsi_debug_sector_size);
1932 goto out;
1933 }
1934
Martin K. Petersen395cef02009-09-18 17:33:03 -04001935 if (scsi_debug_dif == SD_DIF_TYPE1_PROTECTION &&
Martin K. Petersenc6a44282009-01-04 03:08:19 -05001936 be32_to_cpu(sdt->ref_tag)
1937 != (start_sec & 0xffffffff)) {
1938 printk(KERN_ERR
1939 "%s: REF check failed on sector %lu\n",
1940 __func__, (unsigned long)sector);
1941 ret = 0x03;
1942 dump_sector(daddr, scsi_debug_sector_size);
1943 goto out;
1944 }
1945
Martin K. Petersen395cef02009-09-18 17:33:03 -04001946 if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION &&
1947 be32_to_cpu(sdt->ref_tag) != ei_lba) {
1948 printk(KERN_ERR
1949 "%s: REF check failed on sector %lu\n",
1950 __func__, (unsigned long)sector);
1951 ret = 0x03;
1952 dump_sector(daddr, scsi_debug_sector_size);
1953 goto out;
1954 }
1955
Martin K. Petersenc6a44282009-01-04 03:08:19 -05001956 /* Would be great to copy this in bigger
1957 * chunks. However, for the sake of
1958 * correctness we need to verify each sector
1959 * before writing it to "stable" storage
1960 */
1961 memcpy(dif_storep + dif_offset(sector), sdt, 8);
1962
1963 sector++;
1964
1965 if (sector == sdebug_store_sectors)
1966 sector = 0; /* Force wrap */
1967
1968 start_sec++;
Martin K. Petersen395cef02009-09-18 17:33:03 -04001969 ei_lba++;
Martin K. Petersenc6a44282009-01-04 03:08:19 -05001970 daddr += scsi_debug_sector_size;
1971 ppage_offset += sizeof(struct sd_dif_tuple);
1972 }
1973
1974 kunmap_atomic(daddr, KM_IRQ0);
1975 }
1976
1977 kunmap_atomic(paddr, KM_IRQ1);
1978
1979 dix_writes++;
1980
1981 return 0;
1982
1983out:
1984 dif_errors++;
1985 kunmap_atomic(daddr, KM_IRQ0);
1986 kunmap_atomic(paddr, KM_IRQ1);
1987 return ret;
1988}
1989
Martin K. Petersen44d92692009-10-15 14:45:27 -04001990static unsigned int map_state(sector_t lba, unsigned int *num)
1991{
1992 unsigned int granularity, alignment, mapped;
1993 sector_t block, next, end;
1994
1995 granularity = scsi_debug_unmap_granularity;
1996 alignment = granularity - scsi_debug_unmap_alignment;
1997 block = lba + alignment;
1998 do_div(block, granularity);
1999
2000 mapped = test_bit(block, map_storep);
2001
2002 if (mapped)
2003 next = find_next_zero_bit(map_storep, map_size, block);
2004 else
2005 next = find_next_bit(map_storep, map_size, block);
2006
2007 end = next * granularity - scsi_debug_unmap_alignment;
2008 *num = end - lba;
2009
2010 return mapped;
2011}
2012
2013static void map_region(sector_t lba, unsigned int len)
2014{
2015 unsigned int granularity, alignment;
2016 sector_t end = lba + len;
2017
2018 granularity = scsi_debug_unmap_granularity;
2019 alignment = granularity - scsi_debug_unmap_alignment;
2020
2021 while (lba < end) {
2022 sector_t block, rem;
2023
2024 block = lba + alignment;
2025 rem = do_div(block, granularity);
2026
FUJITA Tomonori9ab98f52010-06-28 01:04:45 +09002027 if (block < map_size)
2028 set_bit(block, map_storep);
Martin K. Petersen44d92692009-10-15 14:45:27 -04002029
2030 lba += granularity - rem;
2031 }
2032}
2033
2034static void unmap_region(sector_t lba, unsigned int len)
2035{
2036 unsigned int granularity, alignment;
2037 sector_t end = lba + len;
2038
2039 granularity = scsi_debug_unmap_granularity;
2040 alignment = granularity - scsi_debug_unmap_alignment;
2041
2042 while (lba < end) {
2043 sector_t block, rem;
2044
2045 block = lba + alignment;
2046 rem = do_div(block, granularity);
2047
FUJITA Tomonori9ab98f52010-06-28 01:04:45 +09002048 if (rem == 0 && lba + granularity <= end &&
2049 block < map_size)
Martin K. Petersen44d92692009-10-15 14:45:27 -04002050 clear_bit(block, map_storep);
2051
2052 lba += granularity - rem;
2053 }
2054}
2055
FUJITA Tomonori19789102008-03-30 00:59:56 +09002056static int resp_write(struct scsi_cmnd *SCpnt, unsigned long long lba,
Martin K. Petersen395cef02009-09-18 17:33:03 -04002057 unsigned int num, struct sdebug_dev_info *devip,
2058 u32 ei_lba)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002059{
2060 unsigned long iflags;
FUJITA Tomonori19789102008-03-30 00:59:56 +09002061 int ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002062
FUJITA Tomonori19789102008-03-30 00:59:56 +09002063 ret = check_device_access_params(devip, lba, num);
2064 if (ret)
2065 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002066
Martin K. Petersenc6a44282009-01-04 03:08:19 -05002067 /* DIX + T10 DIF */
2068 if (scsi_debug_dix && scsi_prot_sg_count(SCpnt)) {
Martin K. Petersen395cef02009-09-18 17:33:03 -04002069 int prot_ret = prot_verify_write(SCpnt, lba, num, ei_lba);
Martin K. Petersenc6a44282009-01-04 03:08:19 -05002070
2071 if (prot_ret) {
2072 mk_sense_buffer(devip, ILLEGAL_REQUEST, 0x10, prot_ret);
2073 return illegal_condition_result;
2074 }
2075 }
2076
Linus Torvalds1da177e2005-04-16 15:20:36 -07002077 write_lock_irqsave(&atomic_rw, iflags);
FUJITA Tomonori19789102008-03-30 00:59:56 +09002078 ret = do_device_access(SCpnt, devip, lba, num, 1);
Martin K. Petersen44d92692009-10-15 14:45:27 -04002079 if (scsi_debug_unmap_granularity)
2080 map_region(lba, num);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002081 write_unlock_irqrestore(&atomic_rw, iflags);
FUJITA Tomonori19789102008-03-30 00:59:56 +09002082 if (-1 == ret)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002083 return (DID_ERROR << 16);
Martin K. Petersen597136a2008-06-05 00:12:59 -04002084 else if ((ret < (num * scsi_debug_sector_size)) &&
Linus Torvalds1da177e2005-04-16 15:20:36 -07002085 (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts))
Douglas Gilbertc65b1442006-06-06 00:11:24 -04002086 printk(KERN_INFO "scsi_debug: write: cdb indicated=%u, "
Martin K. Petersen597136a2008-06-05 00:12:59 -04002087 " IO sent=%d bytes\n", num * scsi_debug_sector_size, ret);
Martin K. Petersen44d92692009-10-15 14:45:27 -04002088
Linus Torvalds1da177e2005-04-16 15:20:36 -07002089 return 0;
2090}
2091
Martin K. Petersen44d92692009-10-15 14:45:27 -04002092static int resp_write_same(struct scsi_cmnd *scmd, unsigned long long lba,
2093 unsigned int num, struct sdebug_dev_info *devip,
2094 u32 ei_lba, unsigned int unmap)
2095{
2096 unsigned long iflags;
2097 unsigned long long i;
2098 int ret;
2099
2100 ret = check_device_access_params(devip, lba, num);
2101 if (ret)
2102 return ret;
2103
Martin K. Petersen5b94e232011-03-08 02:08:11 -05002104 if (num > scsi_debug_write_same_length) {
2105 mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB,
2106 0);
2107 return check_condition_result;
2108 }
2109
Martin K. Petersen44d92692009-10-15 14:45:27 -04002110 write_lock_irqsave(&atomic_rw, iflags);
2111
2112 if (unmap && scsi_debug_unmap_granularity) {
2113 unmap_region(lba, num);
2114 goto out;
2115 }
2116
2117 /* Else fetch one logical block */
2118 ret = fetch_to_dev_buffer(scmd,
2119 fake_storep + (lba * scsi_debug_sector_size),
2120 scsi_debug_sector_size);
2121
2122 if (-1 == ret) {
2123 write_unlock_irqrestore(&atomic_rw, iflags);
2124 return (DID_ERROR << 16);
2125 } else if ((ret < (num * scsi_debug_sector_size)) &&
2126 (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts))
2127 printk(KERN_INFO "scsi_debug: write same: cdb indicated=%u, "
2128 " IO sent=%d bytes\n", num * scsi_debug_sector_size, ret);
2129
2130 /* Copy first sector to remaining blocks */
2131 for (i = 1 ; i < num ; i++)
2132 memcpy(fake_storep + ((lba + i) * scsi_debug_sector_size),
2133 fake_storep + (lba * scsi_debug_sector_size),
2134 scsi_debug_sector_size);
2135
2136 if (scsi_debug_unmap_granularity)
2137 map_region(lba, num);
2138out:
2139 write_unlock_irqrestore(&atomic_rw, iflags);
2140
2141 return 0;
2142}
2143
2144struct unmap_block_desc {
2145 __be64 lba;
2146 __be32 blocks;
2147 __be32 __reserved;
2148};
2149
2150static int resp_unmap(struct scsi_cmnd * scmd, struct sdebug_dev_info * devip)
2151{
2152 unsigned char *buf;
2153 struct unmap_block_desc *desc;
2154 unsigned int i, payload_len, descriptors;
2155 int ret;
2156
2157 ret = check_readiness(scmd, 1, devip);
2158 if (ret)
2159 return ret;
2160
2161 payload_len = get_unaligned_be16(&scmd->cmnd[7]);
2162 BUG_ON(scsi_bufflen(scmd) != payload_len);
2163
2164 descriptors = (payload_len - 8) / 16;
2165
2166 buf = kmalloc(scsi_bufflen(scmd), GFP_ATOMIC);
2167 if (!buf)
2168 return check_condition_result;
2169
2170 scsi_sg_copy_to_buffer(scmd, buf, scsi_bufflen(scmd));
2171
2172 BUG_ON(get_unaligned_be16(&buf[0]) != payload_len - 2);
2173 BUG_ON(get_unaligned_be16(&buf[2]) != descriptors * 16);
2174
2175 desc = (void *)&buf[8];
2176
2177 for (i = 0 ; i < descriptors ; i++) {
2178 unsigned long long lba = get_unaligned_be64(&desc[i].lba);
2179 unsigned int num = get_unaligned_be32(&desc[i].blocks);
2180
2181 ret = check_device_access_params(devip, lba, num);
2182 if (ret)
2183 goto out;
2184
2185 unmap_region(lba, num);
2186 }
2187
2188 ret = 0;
2189
2190out:
2191 kfree(buf);
2192
2193 return ret;
2194}
2195
2196#define SDEBUG_GET_LBA_STATUS_LEN 32
2197
2198static int resp_get_lba_status(struct scsi_cmnd * scmd,
2199 struct sdebug_dev_info * devip)
2200{
2201 unsigned long long lba;
2202 unsigned int alloc_len, mapped, num;
2203 unsigned char arr[SDEBUG_GET_LBA_STATUS_LEN];
2204 int ret;
2205
2206 ret = check_readiness(scmd, 1, devip);
2207 if (ret)
2208 return ret;
2209
2210 lba = get_unaligned_be64(&scmd->cmnd[2]);
2211 alloc_len = get_unaligned_be32(&scmd->cmnd[10]);
2212
2213 if (alloc_len < 24)
2214 return 0;
2215
2216 ret = check_device_access_params(devip, lba, 1);
2217 if (ret)
2218 return ret;
2219
2220 mapped = map_state(lba, &num);
2221
2222 memset(arr, 0, SDEBUG_GET_LBA_STATUS_LEN);
2223 put_unaligned_be32(16, &arr[0]); /* Parameter Data Length */
2224 put_unaligned_be64(lba, &arr[8]); /* LBA */
2225 put_unaligned_be32(num, &arr[16]); /* Number of blocks */
2226 arr[20] = !mapped; /* mapped = 0, unmapped = 1 */
2227
2228 return fill_from_dev_buffer(scmd, arr, SDEBUG_GET_LBA_STATUS_LEN);
2229}
2230
Douglas Gilbertc65b1442006-06-06 00:11:24 -04002231#define SDEBUG_RLUN_ARR_SZ 256
Linus Torvalds1da177e2005-04-16 15:20:36 -07002232
2233static int resp_report_luns(struct scsi_cmnd * scp,
2234 struct sdebug_dev_info * devip)
2235{
2236 unsigned int alloc_len;
Douglas Gilbertc65b1442006-06-06 00:11:24 -04002237 int lun_cnt, i, upper, num, n, wlun, lun;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002238 unsigned char *cmd = (unsigned char *)scp->cmnd;
2239 int select_report = (int)cmd[2];
2240 struct scsi_lun *one_lun;
2241 unsigned char arr[SDEBUG_RLUN_ARR_SZ];
Douglas Gilbertc65b1442006-06-06 00:11:24 -04002242 unsigned char * max_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002243
2244 alloc_len = cmd[9] + (cmd[8] << 8) + (cmd[7] << 16) + (cmd[6] << 24);
Douglas Gilbertc65b1442006-06-06 00:11:24 -04002245 if ((alloc_len < 4) || (select_report > 2)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002246 mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB,
2247 0);
2248 return check_condition_result;
2249 }
2250 /* can produce response with up to 16k luns (lun 0 to lun 16383) */
2251 memset(arr, 0, SDEBUG_RLUN_ARR_SZ);
2252 lun_cnt = scsi_debug_max_luns;
Douglas Gilbertc65b1442006-06-06 00:11:24 -04002253 if (1 == select_report)
2254 lun_cnt = 0;
2255 else if (scsi_debug_no_lun_0 && (lun_cnt > 0))
2256 --lun_cnt;
2257 wlun = (select_report > 0) ? 1 : 0;
2258 num = lun_cnt + wlun;
2259 arr[2] = ((sizeof(struct scsi_lun) * num) >> 8) & 0xff;
2260 arr[3] = (sizeof(struct scsi_lun) * num) & 0xff;
2261 n = min((int)((SDEBUG_RLUN_ARR_SZ - 8) /
2262 sizeof(struct scsi_lun)), num);
2263 if (n < num) {
2264 wlun = 0;
2265 lun_cnt = n;
2266 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002267 one_lun = (struct scsi_lun *) &arr[8];
Douglas Gilbertc65b1442006-06-06 00:11:24 -04002268 max_addr = arr + SDEBUG_RLUN_ARR_SZ;
2269 for (i = 0, lun = (scsi_debug_no_lun_0 ? 1 : 0);
2270 ((i < lun_cnt) && ((unsigned char *)(one_lun + i) < max_addr));
2271 i++, lun++) {
2272 upper = (lun >> 8) & 0x3f;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002273 if (upper)
2274 one_lun[i].scsi_lun[0] =
2275 (upper | (SAM2_LUN_ADDRESS_METHOD << 6));
Douglas Gilbertc65b1442006-06-06 00:11:24 -04002276 one_lun[i].scsi_lun[1] = lun & 0xff;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002277 }
Douglas Gilbertc65b1442006-06-06 00:11:24 -04002278 if (wlun) {
2279 one_lun[i].scsi_lun[0] = (SAM2_WLUN_REPORT_LUNS >> 8) & 0xff;
2280 one_lun[i].scsi_lun[1] = SAM2_WLUN_REPORT_LUNS & 0xff;
2281 i++;
2282 }
2283 alloc_len = (unsigned char *)(one_lun + i) - arr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002284 return fill_from_dev_buffer(scp, arr,
2285 min((int)alloc_len, SDEBUG_RLUN_ARR_SZ));
2286}
2287
FUJITA Tomonoric639d142008-01-23 01:32:01 +09002288static int resp_xdwriteread(struct scsi_cmnd *scp, unsigned long long lba,
2289 unsigned int num, struct sdebug_dev_info *devip)
2290{
2291 int i, j, ret = -1;
2292 unsigned char *kaddr, *buf;
2293 unsigned int offset;
2294 struct scatterlist *sg;
2295 struct scsi_data_buffer *sdb = scsi_in(scp);
2296
2297 /* better not to use temporary buffer. */
2298 buf = kmalloc(scsi_bufflen(scp), GFP_ATOMIC);
2299 if (!buf)
2300 return ret;
2301
FUJITA Tomonori21a61822008-03-09 13:44:30 +09002302 scsi_sg_copy_to_buffer(scp, buf, scsi_bufflen(scp));
FUJITA Tomonoric639d142008-01-23 01:32:01 +09002303
2304 offset = 0;
2305 for_each_sg(sdb->table.sgl, sg, sdb->table.nents, i) {
2306 kaddr = (unsigned char *)kmap_atomic(sg_page(sg), KM_USER0);
2307 if (!kaddr)
2308 goto out;
2309
2310 for (j = 0; j < sg->length; j++)
2311 *(kaddr + sg->offset + j) ^= *(buf + offset + j);
2312
2313 offset += sg->length;
2314 kunmap_atomic(kaddr, KM_USER0);
2315 }
2316 ret = 0;
2317out:
2318 kfree(buf);
2319
2320 return ret;
2321}
2322
Linus Torvalds1da177e2005-04-16 15:20:36 -07002323/* When timer goes off this function is called. */
2324static void timer_intr_handler(unsigned long indx)
2325{
2326 struct sdebug_queued_cmd * sqcp;
2327 unsigned long iflags;
2328
Douglas Gilbert78d4e5a2010-03-25 17:29:05 -04002329 if (indx >= scsi_debug_max_queue) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002330 printk(KERN_ERR "scsi_debug:timer_intr_handler: indx too "
2331 "large\n");
2332 return;
2333 }
2334 spin_lock_irqsave(&queued_arr_lock, iflags);
2335 sqcp = &queued_arr[(int)indx];
2336 if (! sqcp->in_use) {
2337 printk(KERN_ERR "scsi_debug:timer_intr_handler: Unexpected "
2338 "interrupt\n");
2339 spin_unlock_irqrestore(&queued_arr_lock, iflags);
2340 return;
2341 }
2342 sqcp->in_use = 0;
2343 if (sqcp->done_funct) {
2344 sqcp->a_cmnd->result = sqcp->scsi_result;
2345 sqcp->done_funct(sqcp->a_cmnd); /* callback to mid level */
2346 }
2347 sqcp->done_funct = NULL;
2348 spin_unlock_irqrestore(&queued_arr_lock, iflags);
2349}
2350
Linus Torvalds1da177e2005-04-16 15:20:36 -07002351
FUJITA Tomonori8dea0d02008-03-30 00:59:58 +09002352static struct sdebug_dev_info *
2353sdebug_device_create(struct sdebug_host_info *sdbg_host, gfp_t flags)
FUJITA Tomonori5cb2fc02008-03-20 11:09:16 +09002354{
2355 struct sdebug_dev_info *devip;
2356
2357 devip = kzalloc(sizeof(*devip), flags);
2358 if (devip) {
2359 devip->sdbg_host = sdbg_host;
2360 list_add_tail(&devip->dev_list, &sdbg_host->dev_info_list);
2361 }
2362 return devip;
2363}
2364
Linus Torvalds1da177e2005-04-16 15:20:36 -07002365static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev)
2366{
2367 struct sdebug_host_info * sdbg_host;
2368 struct sdebug_dev_info * open_devip = NULL;
2369 struct sdebug_dev_info * devip =
2370 (struct sdebug_dev_info *)sdev->hostdata;
2371
2372 if (devip)
2373 return devip;
FUJITA Tomonorid1e4c9c2008-03-02 18:30:18 +09002374 sdbg_host = *(struct sdebug_host_info **)shost_priv(sdev->host);
2375 if (!sdbg_host) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002376 printk(KERN_ERR "Host info NULL\n");
2377 return NULL;
2378 }
2379 list_for_each_entry(devip, &sdbg_host->dev_info_list, dev_list) {
2380 if ((devip->used) && (devip->channel == sdev->channel) &&
2381 (devip->target == sdev->id) &&
2382 (devip->lun == sdev->lun))
2383 return devip;
2384 else {
2385 if ((!devip->used) && (!open_devip))
2386 open_devip = devip;
2387 }
2388 }
FUJITA Tomonori5cb2fc02008-03-20 11:09:16 +09002389 if (!open_devip) { /* try and make a new one */
2390 open_devip = sdebug_device_create(sdbg_host, GFP_ATOMIC);
2391 if (!open_devip) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002392 printk(KERN_ERR "%s: out of memory at line %d\n",
Harvey Harrisoncadbd4a2008-07-03 23:47:27 -07002393 __func__, __LINE__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002394 return NULL;
2395 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002396 }
FUJITA Tomonoria75869d2008-03-20 11:09:17 +09002397
2398 open_devip->channel = sdev->channel;
2399 open_devip->target = sdev->id;
2400 open_devip->lun = sdev->lun;
2401 open_devip->sdbg_host = sdbg_host;
2402 open_devip->reset = 1;
2403 open_devip->used = 1;
2404 memset(open_devip->sense_buff, 0, SDEBUG_SENSE_LEN);
2405 if (scsi_debug_dsense)
2406 open_devip->sense_buff[0] = 0x72;
2407 else {
2408 open_devip->sense_buff[0] = 0x70;
2409 open_devip->sense_buff[7] = 0xa;
2410 }
2411 if (sdev->lun == SAM2_WLUN_REPORT_LUNS)
2412 open_devip->wlun = SAM2_WLUN_REPORT_LUNS & 0xff;
2413
2414 return open_devip;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002415}
2416
FUJITA Tomonori8dea0d02008-03-30 00:59:58 +09002417static int scsi_debug_slave_alloc(struct scsi_device *sdp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002418{
FUJITA Tomonori8dea0d02008-03-30 00:59:58 +09002419 if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
2420 printk(KERN_INFO "scsi_debug: slave_alloc <%u %u %u %u>\n",
2421 sdp->host->host_no, sdp->channel, sdp->id, sdp->lun);
Nick Piggin75ad23b2008-04-29 14:48:33 +02002422 queue_flag_set_unlocked(QUEUE_FLAG_BIDI, sdp->request_queue);
FUJITA Tomonori8dea0d02008-03-30 00:59:58 +09002423 return 0;
2424}
Linus Torvalds1da177e2005-04-16 15:20:36 -07002425
FUJITA Tomonori8dea0d02008-03-30 00:59:58 +09002426static int scsi_debug_slave_configure(struct scsi_device *sdp)
2427{
2428 struct sdebug_dev_info *devip;
FUJITA Tomonoria34c4e92008-03-25 09:26:50 +09002429
Linus Torvalds1da177e2005-04-16 15:20:36 -07002430 if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
FUJITA Tomonori8dea0d02008-03-30 00:59:58 +09002431 printk(KERN_INFO "scsi_debug: slave_configure <%u %u %u %u>\n",
2432 sdp->host->host_no, sdp->channel, sdp->id, sdp->lun);
2433 if (sdp->host->max_cmd_len != SCSI_DEBUG_MAX_CMD_LEN)
2434 sdp->host->max_cmd_len = SCSI_DEBUG_MAX_CMD_LEN;
2435 devip = devInfoReg(sdp);
2436 if (NULL == devip)
2437 return 1; /* no resources, will be marked offline */
2438 sdp->hostdata = devip;
2439 if (sdp->host->cmd_per_lun)
2440 scsi_adjust_queue_depth(sdp, SDEBUG_TAGGED_QUEUING,
2441 sdp->host->cmd_per_lun);
2442 blk_queue_max_segment_size(sdp->request_queue, 256 * 1024);
Douglas Gilbert78d4e5a2010-03-25 17:29:05 -04002443 if (scsi_debug_no_uld)
2444 sdp->no_uld_attach = 1;
FUJITA Tomonori8dea0d02008-03-30 00:59:58 +09002445 return 0;
2446}
2447
2448static void scsi_debug_slave_destroy(struct scsi_device *sdp)
2449{
2450 struct sdebug_dev_info *devip =
2451 (struct sdebug_dev_info *)sdp->hostdata;
2452
2453 if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
2454 printk(KERN_INFO "scsi_debug: slave_destroy <%u %u %u %u>\n",
2455 sdp->host->host_no, sdp->channel, sdp->id, sdp->lun);
2456 if (devip) {
2457 /* make this slot avaliable for re-use */
2458 devip->used = 0;
2459 sdp->hostdata = NULL;
2460 }
2461}
2462
2463/* Returns 1 if found 'cmnd' and deleted its timer. else returns 0 */
2464static int stop_queued_cmnd(struct scsi_cmnd *cmnd)
2465{
2466 unsigned long iflags;
2467 int k;
2468 struct sdebug_queued_cmd *sqcp;
2469
2470 spin_lock_irqsave(&queued_arr_lock, iflags);
Douglas Gilbert78d4e5a2010-03-25 17:29:05 -04002471 for (k = 0; k < scsi_debug_max_queue; ++k) {
FUJITA Tomonori8dea0d02008-03-30 00:59:58 +09002472 sqcp = &queued_arr[k];
2473 if (sqcp->in_use && (cmnd == sqcp->a_cmnd)) {
2474 del_timer_sync(&sqcp->cmnd_timer);
2475 sqcp->in_use = 0;
2476 sqcp->a_cmnd = NULL;
2477 break;
2478 }
2479 }
2480 spin_unlock_irqrestore(&queued_arr_lock, iflags);
Douglas Gilbert78d4e5a2010-03-25 17:29:05 -04002481 return (k < scsi_debug_max_queue) ? 1 : 0;
FUJITA Tomonori8dea0d02008-03-30 00:59:58 +09002482}
2483
2484/* Deletes (stops) timers of all queued commands */
2485static void stop_all_queued(void)
2486{
2487 unsigned long iflags;
2488 int k;
2489 struct sdebug_queued_cmd *sqcp;
2490
2491 spin_lock_irqsave(&queued_arr_lock, iflags);
Douglas Gilbert78d4e5a2010-03-25 17:29:05 -04002492 for (k = 0; k < scsi_debug_max_queue; ++k) {
FUJITA Tomonori8dea0d02008-03-30 00:59:58 +09002493 sqcp = &queued_arr[k];
2494 if (sqcp->in_use && sqcp->a_cmnd) {
2495 del_timer_sync(&sqcp->cmnd_timer);
2496 sqcp->in_use = 0;
2497 sqcp->a_cmnd = NULL;
2498 }
2499 }
2500 spin_unlock_irqrestore(&queued_arr_lock, iflags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002501}
2502
2503static int scsi_debug_abort(struct scsi_cmnd * SCpnt)
2504{
2505 if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
2506 printk(KERN_INFO "scsi_debug: abort\n");
2507 ++num_aborts;
2508 stop_queued_cmnd(SCpnt);
2509 return SUCCESS;
2510}
2511
2512static int scsi_debug_biosparam(struct scsi_device *sdev,
2513 struct block_device * bdev, sector_t capacity, int *info)
2514{
2515 int res;
2516 unsigned char *buf;
2517
2518 if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
2519 printk(KERN_INFO "scsi_debug: biosparam\n");
2520 buf = scsi_bios_ptable(bdev);
2521 if (buf) {
2522 res = scsi_partsize(buf, capacity,
2523 &info[2], &info[0], &info[1]);
2524 kfree(buf);
2525 if (! res)
2526 return res;
2527 }
2528 info[0] = sdebug_heads;
2529 info[1] = sdebug_sectors_per;
2530 info[2] = sdebug_cylinders_per;
2531 return 0;
2532}
2533
2534static int scsi_debug_device_reset(struct scsi_cmnd * SCpnt)
2535{
2536 struct sdebug_dev_info * devip;
2537
2538 if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
2539 printk(KERN_INFO "scsi_debug: device_reset\n");
2540 ++num_dev_resets;
2541 if (SCpnt) {
2542 devip = devInfoReg(SCpnt->device);
2543 if (devip)
2544 devip->reset = 1;
2545 }
2546 return SUCCESS;
2547}
2548
2549static int scsi_debug_bus_reset(struct scsi_cmnd * SCpnt)
2550{
2551 struct sdebug_host_info *sdbg_host;
2552 struct sdebug_dev_info * dev_info;
2553 struct scsi_device * sdp;
2554 struct Scsi_Host * hp;
2555
2556 if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
2557 printk(KERN_INFO "scsi_debug: bus_reset\n");
2558 ++num_bus_resets;
2559 if (SCpnt && ((sdp = SCpnt->device)) && ((hp = sdp->host))) {
FUJITA Tomonorid1e4c9c2008-03-02 18:30:18 +09002560 sdbg_host = *(struct sdebug_host_info **)shost_priv(hp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002561 if (sdbg_host) {
2562 list_for_each_entry(dev_info,
2563 &sdbg_host->dev_info_list,
2564 dev_list)
2565 dev_info->reset = 1;
2566 }
2567 }
2568 return SUCCESS;
2569}
2570
2571static int scsi_debug_host_reset(struct scsi_cmnd * SCpnt)
2572{
2573 struct sdebug_host_info * sdbg_host;
2574 struct sdebug_dev_info * dev_info;
2575
2576 if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
2577 printk(KERN_INFO "scsi_debug: host_reset\n");
2578 ++num_host_resets;
2579 spin_lock(&sdebug_host_list_lock);
2580 list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) {
2581 list_for_each_entry(dev_info, &sdbg_host->dev_info_list,
2582 dev_list)
2583 dev_info->reset = 1;
2584 }
2585 spin_unlock(&sdebug_host_list_lock);
2586 stop_all_queued();
2587 return SUCCESS;
2588}
2589
Linus Torvalds1da177e2005-04-16 15:20:36 -07002590/* Initializes timers in queued array */
2591static void __init init_all_queued(void)
2592{
2593 unsigned long iflags;
2594 int k;
2595 struct sdebug_queued_cmd * sqcp;
2596
2597 spin_lock_irqsave(&queued_arr_lock, iflags);
Douglas Gilbert78d4e5a2010-03-25 17:29:05 -04002598 for (k = 0; k < scsi_debug_max_queue; ++k) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002599 sqcp = &queued_arr[k];
2600 init_timer(&sqcp->cmnd_timer);
2601 sqcp->in_use = 0;
2602 sqcp->a_cmnd = NULL;
2603 }
2604 spin_unlock_irqrestore(&queued_arr_lock, iflags);
2605}
2606
FUJITA Tomonorif58b0ef2008-03-30 00:59:54 +09002607static void __init sdebug_build_parts(unsigned char *ramp,
FUJITA Tomonori5f2578e2008-03-30 00:59:57 +09002608 unsigned long store_size)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002609{
2610 struct partition * pp;
2611 int starts[SDEBUG_MAX_PARTS + 2];
2612 int sectors_per_part, num_sectors, k;
2613 int heads_by_sects, start_sec, end_sec;
2614
2615 /* assume partition table already zeroed */
FUJITA Tomonorif58b0ef2008-03-30 00:59:54 +09002616 if ((scsi_debug_num_parts < 1) || (store_size < 1048576))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002617 return;
2618 if (scsi_debug_num_parts > SDEBUG_MAX_PARTS) {
2619 scsi_debug_num_parts = SDEBUG_MAX_PARTS;
2620 printk(KERN_WARNING "scsi_debug:build_parts: reducing "
2621 "partitions to %d\n", SDEBUG_MAX_PARTS);
2622 }
Douglas Gilbertc65b1442006-06-06 00:11:24 -04002623 num_sectors = (int)sdebug_store_sectors;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002624 sectors_per_part = (num_sectors - sdebug_sectors_per)
2625 / scsi_debug_num_parts;
2626 heads_by_sects = sdebug_heads * sdebug_sectors_per;
2627 starts[0] = sdebug_sectors_per;
2628 for (k = 1; k < scsi_debug_num_parts; ++k)
2629 starts[k] = ((k * sectors_per_part) / heads_by_sects)
2630 * heads_by_sects;
2631 starts[scsi_debug_num_parts] = num_sectors;
2632 starts[scsi_debug_num_parts + 1] = 0;
2633
2634 ramp[510] = 0x55; /* magic partition markings */
2635 ramp[511] = 0xAA;
2636 pp = (struct partition *)(ramp + 0x1be);
2637 for (k = 0; starts[k + 1]; ++k, ++pp) {
2638 start_sec = starts[k];
2639 end_sec = starts[k + 1] - 1;
2640 pp->boot_ind = 0;
2641
2642 pp->cyl = start_sec / heads_by_sects;
2643 pp->head = (start_sec - (pp->cyl * heads_by_sects))
2644 / sdebug_sectors_per;
2645 pp->sector = (start_sec % sdebug_sectors_per) + 1;
2646
2647 pp->end_cyl = end_sec / heads_by_sects;
2648 pp->end_head = (end_sec - (pp->end_cyl * heads_by_sects))
2649 / sdebug_sectors_per;
2650 pp->end_sector = (end_sec % sdebug_sectors_per) + 1;
2651
2652 pp->start_sect = start_sec;
2653 pp->nr_sects = end_sec - start_sec + 1;
2654 pp->sys_ind = 0x83; /* plain Linux partition */
2655 }
2656}
2657
2658static int schedule_resp(struct scsi_cmnd * cmnd,
2659 struct sdebug_dev_info * devip,
2660 done_funct_t done, int scsi_result, int delta_jiff)
2661{
2662 if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && cmnd) {
2663 if (scsi_result) {
2664 struct scsi_device * sdp = cmnd->device;
2665
Douglas Gilbertc65b1442006-06-06 00:11:24 -04002666 printk(KERN_INFO "scsi_debug: <%u %u %u %u> "
2667 "non-zero result=0x%x\n", sdp->host->host_no,
2668 sdp->channel, sdp->id, sdp->lun, scsi_result);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002669 }
2670 }
2671 if (cmnd && devip) {
2672 /* simulate autosense by this driver */
2673 if (SAM_STAT_CHECK_CONDITION == (scsi_result & 0xff))
2674 memcpy(cmnd->sense_buffer, devip->sense_buff,
2675 (SCSI_SENSE_BUFFERSIZE > SDEBUG_SENSE_LEN) ?
2676 SDEBUG_SENSE_LEN : SCSI_SENSE_BUFFERSIZE);
2677 }
2678 if (delta_jiff <= 0) {
2679 if (cmnd)
2680 cmnd->result = scsi_result;
2681 if (done)
2682 done(cmnd);
2683 return 0;
2684 } else {
2685 unsigned long iflags;
2686 int k;
2687 struct sdebug_queued_cmd * sqcp = NULL;
2688
2689 spin_lock_irqsave(&queued_arr_lock, iflags);
Douglas Gilbert78d4e5a2010-03-25 17:29:05 -04002690 for (k = 0; k < scsi_debug_max_queue; ++k) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002691 sqcp = &queued_arr[k];
2692 if (! sqcp->in_use)
2693 break;
2694 }
Douglas Gilbert78d4e5a2010-03-25 17:29:05 -04002695 if (k >= scsi_debug_max_queue) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002696 spin_unlock_irqrestore(&queued_arr_lock, iflags);
2697 printk(KERN_WARNING "scsi_debug: can_queue exceeded\n");
2698 return 1; /* report busy to mid level */
2699 }
2700 sqcp->in_use = 1;
2701 sqcp->a_cmnd = cmnd;
2702 sqcp->scsi_result = scsi_result;
2703 sqcp->done_funct = done;
2704 sqcp->cmnd_timer.function = timer_intr_handler;
2705 sqcp->cmnd_timer.data = k;
2706 sqcp->cmnd_timer.expires = jiffies + delta_jiff;
2707 add_timer(&sqcp->cmnd_timer);
2708 spin_unlock_irqrestore(&queued_arr_lock, iflags);
2709 if (cmnd)
2710 cmnd->result = 0;
2711 return 0;
2712 }
2713}
Douglas Gilbert23183912006-09-16 20:30:47 -04002714/* Note: The following macros create attribute files in the
2715 /sys/module/scsi_debug/parameters directory. Unfortunately this
2716 driver is unaware of a change and cannot trigger auxiliary actions
2717 as it can when the corresponding attribute in the
2718 /sys/bus/pseudo/drivers/scsi_debug directory is changed.
2719 */
Douglas Gilbertc65b1442006-06-06 00:11:24 -04002720module_param_named(add_host, scsi_debug_add_host, int, S_IRUGO | S_IWUSR);
Martin K. Petersen5b94e232011-03-08 02:08:11 -05002721module_param_named(ato, scsi_debug_ato, int, S_IRUGO);
Douglas Gilbertc65b1442006-06-06 00:11:24 -04002722module_param_named(delay, scsi_debug_delay, int, S_IRUGO | S_IWUSR);
2723module_param_named(dev_size_mb, scsi_debug_dev_size_mb, int, S_IRUGO);
Martin K. Petersen5b94e232011-03-08 02:08:11 -05002724module_param_named(dif, scsi_debug_dif, int, S_IRUGO);
2725module_param_named(dix, scsi_debug_dix, int, S_IRUGO);
Douglas Gilbertc65b1442006-06-06 00:11:24 -04002726module_param_named(dsense, scsi_debug_dsense, int, S_IRUGO | S_IWUSR);
2727module_param_named(every_nth, scsi_debug_every_nth, int, S_IRUGO | S_IWUSR);
Douglas Gilbert23183912006-09-16 20:30:47 -04002728module_param_named(fake_rw, scsi_debug_fake_rw, int, S_IRUGO | S_IWUSR);
Martin K. Petersen5b94e232011-03-08 02:08:11 -05002729module_param_named(guard, scsi_debug_guard, int, S_IRUGO);
2730module_param_named(lbpu, scsi_debug_lbpu, int, S_IRUGO);
2731module_param_named(lbpws, scsi_debug_lbpws, int, S_IRUGO);
2732module_param_named(lbpws10, scsi_debug_lbpws10, int, S_IRUGO);
2733module_param_named(lowest_aligned, scsi_debug_lowest_aligned, int, S_IRUGO);
Douglas Gilbertc65b1442006-06-06 00:11:24 -04002734module_param_named(max_luns, scsi_debug_max_luns, int, S_IRUGO | S_IWUSR);
Douglas Gilbert78d4e5a2010-03-25 17:29:05 -04002735module_param_named(max_queue, scsi_debug_max_queue, int, S_IRUGO | S_IWUSR);
Douglas Gilbertc65b1442006-06-06 00:11:24 -04002736module_param_named(no_lun_0, scsi_debug_no_lun_0, int, S_IRUGO | S_IWUSR);
Douglas Gilbert78d4e5a2010-03-25 17:29:05 -04002737module_param_named(no_uld, scsi_debug_no_uld, int, S_IRUGO);
Douglas Gilbertc65b1442006-06-06 00:11:24 -04002738module_param_named(num_parts, scsi_debug_num_parts, int, S_IRUGO);
2739module_param_named(num_tgts, scsi_debug_num_tgts, int, S_IRUGO | S_IWUSR);
Martin K. Petersen5b94e232011-03-08 02:08:11 -05002740module_param_named(opt_blks, scsi_debug_opt_blks, int, S_IRUGO);
Douglas Gilbertc65b1442006-06-06 00:11:24 -04002741module_param_named(opts, scsi_debug_opts, int, S_IRUGO | S_IWUSR);
Martin K. Petersen5b94e232011-03-08 02:08:11 -05002742module_param_named(physblk_exp, scsi_debug_physblk_exp, int, S_IRUGO);
Douglas Gilbertc65b1442006-06-06 00:11:24 -04002743module_param_named(ptype, scsi_debug_ptype, int, S_IRUGO | S_IWUSR);
2744module_param_named(scsi_level, scsi_debug_scsi_level, int, S_IRUGO);
Martin K. Petersen5b94e232011-03-08 02:08:11 -05002745module_param_named(sector_size, scsi_debug_sector_size, int, S_IRUGO);
2746module_param_named(unmap_alignment, scsi_debug_unmap_alignment, int, S_IRUGO);
2747module_param_named(unmap_granularity, scsi_debug_unmap_granularity, int, S_IRUGO);
2748module_param_named(unmap_max_blocks, scsi_debug_unmap_max_blocks, int, S_IRUGO);
2749module_param_named(unmap_max_desc, scsi_debug_unmap_max_desc, int, S_IRUGO);
Douglas Gilbertc65b1442006-06-06 00:11:24 -04002750module_param_named(virtual_gb, scsi_debug_virtual_gb, int, S_IRUGO | S_IWUSR);
Douglas Gilbert23183912006-09-16 20:30:47 -04002751module_param_named(vpd_use_hostno, scsi_debug_vpd_use_hostno, int,
2752 S_IRUGO | S_IWUSR);
Martin K. Petersen5b94e232011-03-08 02:08:11 -05002753module_param_named(write_same_length, scsi_debug_write_same_length, int,
2754 S_IRUGO | S_IWUSR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002755
2756MODULE_AUTHOR("Eric Youngdale + Douglas Gilbert");
2757MODULE_DESCRIPTION("SCSI debug adapter driver");
2758MODULE_LICENSE("GPL");
2759MODULE_VERSION(SCSI_DEBUG_VERSION);
2760
2761MODULE_PARM_DESC(add_host, "0..127 hosts allowed(def=1)");
Martin K. Petersen5b94e232011-03-08 02:08:11 -05002762MODULE_PARM_DESC(ato, "application tag ownership: 0=disk 1=host (def=1)");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002763MODULE_PARM_DESC(delay, "# of jiffies to delay response(def=1)");
Douglas Gilbertc65b1442006-06-06 00:11:24 -04002764MODULE_PARM_DESC(dev_size_mb, "size in MB of ram shared by devs(def=8)");
Martin K. Petersen5b94e232011-03-08 02:08:11 -05002765MODULE_PARM_DESC(dif, "data integrity field type: 0-3 (def=0)");
2766MODULE_PARM_DESC(dix, "data integrity extensions mask (def=0)");
Douglas Gilbertc65b1442006-06-06 00:11:24 -04002767MODULE_PARM_DESC(dsense, "use descriptor sense format(def=0 -> fixed)");
Randy Dunlapbeb87c32007-06-11 11:36:40 -07002768MODULE_PARM_DESC(every_nth, "timeout every nth command(def=0)");
Douglas Gilbert23183912006-09-16 20:30:47 -04002769MODULE_PARM_DESC(fake_rw, "fake reads/writes instead of copying (def=0)");
Martin K. Petersen5b94e232011-03-08 02:08:11 -05002770MODULE_PARM_DESC(guard, "protection checksum: 0=crc, 1=ip (def=0)");
2771MODULE_PARM_DESC(lbpu, "enable LBP, support UNMAP command (def=0)");
2772MODULE_PARM_DESC(lbpws, "enable LBP, support WRITE SAME(16) with UNMAP bit (def=0)");
2773MODULE_PARM_DESC(lbpws10, "enable LBP, support WRITE SAME(10) with UNMAP bit (def=0)");
2774MODULE_PARM_DESC(lowest_aligned, "lowest aligned lba (def=0)");
Douglas Gilbertc65b1442006-06-06 00:11:24 -04002775MODULE_PARM_DESC(max_luns, "number of LUNs per target to simulate(def=1)");
Douglas Gilbert78d4e5a2010-03-25 17:29:05 -04002776MODULE_PARM_DESC(max_queue, "max number of queued commands (1 to 255(def))");
Douglas Gilbertc65b1442006-06-06 00:11:24 -04002777MODULE_PARM_DESC(no_lun_0, "no LU number 0 (def=0 -> have lun 0)");
Douglas Gilbert78d4e5a2010-03-25 17:29:05 -04002778MODULE_PARM_DESC(no_uld, "stop ULD (e.g. sd driver) attaching (def=0))");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002779MODULE_PARM_DESC(num_parts, "number of partitions(def=0)");
Douglas Gilbertc65b1442006-06-06 00:11:24 -04002780MODULE_PARM_DESC(num_tgts, "number of targets per host to simulate(def=1)");
Martin K. Petersen5b94e232011-03-08 02:08:11 -05002781MODULE_PARM_DESC(opt_blks, "optimal transfer length in block (def=64)");
Douglas Gilbert6f3cbf52007-01-05 00:05:25 -05002782MODULE_PARM_DESC(opts, "1->noise, 2->medium_err, 4->timeout, 8->recovered_err... (def=0)");
Martin K. Petersen5b94e232011-03-08 02:08:11 -05002783MODULE_PARM_DESC(physblk_exp, "physical block exponent (def=0)");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002784MODULE_PARM_DESC(ptype, "SCSI peripheral type(def=0[disk])");
2785MODULE_PARM_DESC(scsi_level, "SCSI level to simulate(def=5[SPC-3])");
Martin K. Petersenea61fca2009-05-15 00:40:33 -04002786MODULE_PARM_DESC(sector_size, "logical block size in bytes (def=512)");
Martin K. Petersen5b94e232011-03-08 02:08:11 -05002787MODULE_PARM_DESC(unmap_alignment, "lowest aligned thin provisioning lba (def=0)");
2788MODULE_PARM_DESC(unmap_granularity, "thin provisioning granularity in blocks (def=1)");
Martin K. Petersen60147592010-08-19 11:49:00 -04002789MODULE_PARM_DESC(unmap_max_blocks, "max # of blocks can be unmapped in one cmd (def=0xffffffff)");
2790MODULE_PARM_DESC(unmap_max_desc, "max # of ranges that can be unmapped in one cmd (def=256)");
Martin K. Petersen5b94e232011-03-08 02:08:11 -05002791MODULE_PARM_DESC(virtual_gb, "virtual gigabyte size (def=0 -> use dev_size_mb)");
2792MODULE_PARM_DESC(vpd_use_hostno, "0 -> dev ids ignore hostno (def=1 -> unique dev ids)");
2793MODULE_PARM_DESC(write_same_length, "Maximum blocks per WRITE SAME cmd (def=0xffff)");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002794
2795static char sdebug_info[256];
2796
2797static const char * scsi_debug_info(struct Scsi_Host * shp)
2798{
2799 sprintf(sdebug_info, "scsi_debug, version %s [%s], "
2800 "dev_size_mb=%d, opts=0x%x", SCSI_DEBUG_VERSION,
2801 scsi_debug_version_date, scsi_debug_dev_size_mb,
2802 scsi_debug_opts);
2803 return sdebug_info;
2804}
2805
2806/* scsi_debug_proc_info
2807 * Used if the driver currently has no own support for /proc/scsi
2808 */
2809static int scsi_debug_proc_info(struct Scsi_Host *host, char *buffer, char **start, off_t offset,
2810 int length, int inout)
2811{
2812 int len, pos, begin;
2813 int orig_length;
2814
2815 orig_length = length;
2816
2817 if (inout == 1) {
2818 char arr[16];
2819 int minLen = length > 15 ? 15 : length;
2820
2821 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
2822 return -EACCES;
2823 memcpy(arr, buffer, minLen);
2824 arr[minLen] = '\0';
2825 if (1 != sscanf(arr, "%d", &pos))
2826 return -EINVAL;
2827 scsi_debug_opts = pos;
2828 if (scsi_debug_every_nth != 0)
2829 scsi_debug_cmnd_count = 0;
2830 return length;
2831 }
2832 begin = 0;
2833 pos = len = sprintf(buffer, "scsi_debug adapter driver, version "
2834 "%s [%s]\n"
2835 "num_tgts=%d, shared (ram) size=%d MB, opts=0x%x, "
2836 "every_nth=%d(curr:%d)\n"
2837 "delay=%d, max_luns=%d, scsi_level=%d\n"
2838 "sector_size=%d bytes, cylinders=%d, heads=%d, sectors=%d\n"
2839 "number of aborts=%d, device_reset=%d, bus_resets=%d, "
Martin K. Petersenc6a44282009-01-04 03:08:19 -05002840 "host_resets=%d\ndix_reads=%d dix_writes=%d dif_errors=%d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -07002841 SCSI_DEBUG_VERSION, scsi_debug_version_date, scsi_debug_num_tgts,
2842 scsi_debug_dev_size_mb, scsi_debug_opts, scsi_debug_every_nth,
2843 scsi_debug_cmnd_count, scsi_debug_delay,
2844 scsi_debug_max_luns, scsi_debug_scsi_level,
Martin K. Petersen597136a2008-06-05 00:12:59 -04002845 scsi_debug_sector_size, sdebug_cylinders_per, sdebug_heads,
2846 sdebug_sectors_per, num_aborts, num_dev_resets, num_bus_resets,
Martin K. Petersenc6a44282009-01-04 03:08:19 -05002847 num_host_resets, dix_reads, dix_writes, dif_errors);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002848 if (pos < offset) {
2849 len = 0;
2850 begin = pos;
2851 }
2852 *start = buffer + (offset - begin); /* Start of wanted data */
2853 len -= (offset - begin);
2854 if (len > length)
2855 len = length;
2856 return len;
2857}
2858
2859static ssize_t sdebug_delay_show(struct device_driver * ddp, char * buf)
2860{
2861 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_delay);
2862}
2863
2864static ssize_t sdebug_delay_store(struct device_driver * ddp,
2865 const char * buf, size_t count)
2866{
2867 int delay;
2868 char work[20];
2869
2870 if (1 == sscanf(buf, "%10s", work)) {
2871 if ((1 == sscanf(work, "%d", &delay)) && (delay >= 0)) {
2872 scsi_debug_delay = delay;
2873 return count;
2874 }
2875 }
2876 return -EINVAL;
2877}
2878DRIVER_ATTR(delay, S_IRUGO | S_IWUSR, sdebug_delay_show,
2879 sdebug_delay_store);
2880
2881static ssize_t sdebug_opts_show(struct device_driver * ddp, char * buf)
2882{
2883 return scnprintf(buf, PAGE_SIZE, "0x%x\n", scsi_debug_opts);
2884}
2885
2886static ssize_t sdebug_opts_store(struct device_driver * ddp,
2887 const char * buf, size_t count)
2888{
2889 int opts;
2890 char work[20];
2891
2892 if (1 == sscanf(buf, "%10s", work)) {
2893 if (0 == strnicmp(work,"0x", 2)) {
2894 if (1 == sscanf(&work[2], "%x", &opts))
2895 goto opts_done;
2896 } else {
2897 if (1 == sscanf(work, "%d", &opts))
2898 goto opts_done;
2899 }
2900 }
2901 return -EINVAL;
2902opts_done:
2903 scsi_debug_opts = opts;
2904 scsi_debug_cmnd_count = 0;
2905 return count;
2906}
2907DRIVER_ATTR(opts, S_IRUGO | S_IWUSR, sdebug_opts_show,
2908 sdebug_opts_store);
2909
2910static ssize_t sdebug_ptype_show(struct device_driver * ddp, char * buf)
2911{
2912 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ptype);
2913}
2914static ssize_t sdebug_ptype_store(struct device_driver * ddp,
2915 const char * buf, size_t count)
2916{
2917 int n;
2918
2919 if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) {
2920 scsi_debug_ptype = n;
2921 return count;
2922 }
2923 return -EINVAL;
2924}
2925DRIVER_ATTR(ptype, S_IRUGO | S_IWUSR, sdebug_ptype_show, sdebug_ptype_store);
2926
2927static ssize_t sdebug_dsense_show(struct device_driver * ddp, char * buf)
2928{
2929 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dsense);
2930}
2931static ssize_t sdebug_dsense_store(struct device_driver * ddp,
2932 const char * buf, size_t count)
2933{
2934 int n;
2935
2936 if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) {
2937 scsi_debug_dsense = n;
2938 return count;
2939 }
2940 return -EINVAL;
2941}
2942DRIVER_ATTR(dsense, S_IRUGO | S_IWUSR, sdebug_dsense_show,
2943 sdebug_dsense_store);
2944
Douglas Gilbert23183912006-09-16 20:30:47 -04002945static ssize_t sdebug_fake_rw_show(struct device_driver * ddp, char * buf)
2946{
2947 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_fake_rw);
2948}
2949static ssize_t sdebug_fake_rw_store(struct device_driver * ddp,
2950 const char * buf, size_t count)
2951{
2952 int n;
2953
2954 if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) {
2955 scsi_debug_fake_rw = n;
2956 return count;
2957 }
2958 return -EINVAL;
2959}
2960DRIVER_ATTR(fake_rw, S_IRUGO | S_IWUSR, sdebug_fake_rw_show,
2961 sdebug_fake_rw_store);
2962
Douglas Gilbertc65b1442006-06-06 00:11:24 -04002963static ssize_t sdebug_no_lun_0_show(struct device_driver * ddp, char * buf)
2964{
2965 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_no_lun_0);
2966}
2967static ssize_t sdebug_no_lun_0_store(struct device_driver * ddp,
2968 const char * buf, size_t count)
2969{
2970 int n;
2971
2972 if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) {
2973 scsi_debug_no_lun_0 = n;
2974 return count;
2975 }
2976 return -EINVAL;
2977}
2978DRIVER_ATTR(no_lun_0, S_IRUGO | S_IWUSR, sdebug_no_lun_0_show,
2979 sdebug_no_lun_0_store);
2980
Linus Torvalds1da177e2005-04-16 15:20:36 -07002981static ssize_t sdebug_num_tgts_show(struct device_driver * ddp, char * buf)
2982{
2983 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_tgts);
2984}
2985static ssize_t sdebug_num_tgts_store(struct device_driver * ddp,
2986 const char * buf, size_t count)
2987{
2988 int n;
2989
2990 if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) {
2991 scsi_debug_num_tgts = n;
2992 sdebug_max_tgts_luns();
2993 return count;
2994 }
2995 return -EINVAL;
2996}
2997DRIVER_ATTR(num_tgts, S_IRUGO | S_IWUSR, sdebug_num_tgts_show,
2998 sdebug_num_tgts_store);
2999
3000static ssize_t sdebug_dev_size_mb_show(struct device_driver * ddp, char * buf)
3001{
3002 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dev_size_mb);
3003}
3004DRIVER_ATTR(dev_size_mb, S_IRUGO, sdebug_dev_size_mb_show, NULL);
3005
3006static ssize_t sdebug_num_parts_show(struct device_driver * ddp, char * buf)
3007{
3008 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_parts);
3009}
3010DRIVER_ATTR(num_parts, S_IRUGO, sdebug_num_parts_show, NULL);
3011
3012static ssize_t sdebug_every_nth_show(struct device_driver * ddp, char * buf)
3013{
3014 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_every_nth);
3015}
3016static ssize_t sdebug_every_nth_store(struct device_driver * ddp,
3017 const char * buf, size_t count)
3018{
3019 int nth;
3020
3021 if ((count > 0) && (1 == sscanf(buf, "%d", &nth))) {
3022 scsi_debug_every_nth = nth;
3023 scsi_debug_cmnd_count = 0;
3024 return count;
3025 }
3026 return -EINVAL;
3027}
3028DRIVER_ATTR(every_nth, S_IRUGO | S_IWUSR, sdebug_every_nth_show,
3029 sdebug_every_nth_store);
3030
3031static ssize_t sdebug_max_luns_show(struct device_driver * ddp, char * buf)
3032{
3033 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_max_luns);
3034}
3035static ssize_t sdebug_max_luns_store(struct device_driver * ddp,
3036 const char * buf, size_t count)
3037{
3038 int n;
3039
3040 if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) {
3041 scsi_debug_max_luns = n;
3042 sdebug_max_tgts_luns();
3043 return count;
3044 }
3045 return -EINVAL;
3046}
3047DRIVER_ATTR(max_luns, S_IRUGO | S_IWUSR, sdebug_max_luns_show,
3048 sdebug_max_luns_store);
3049
Douglas Gilbert78d4e5a2010-03-25 17:29:05 -04003050static ssize_t sdebug_max_queue_show(struct device_driver * ddp, char * buf)
3051{
3052 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_max_queue);
3053}
3054static ssize_t sdebug_max_queue_store(struct device_driver * ddp,
3055 const char * buf, size_t count)
3056{
3057 int n;
3058
3059 if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n > 0) &&
3060 (n <= SCSI_DEBUG_CANQUEUE)) {
3061 scsi_debug_max_queue = n;
3062 return count;
3063 }
3064 return -EINVAL;
3065}
3066DRIVER_ATTR(max_queue, S_IRUGO | S_IWUSR, sdebug_max_queue_show,
3067 sdebug_max_queue_store);
3068
3069static ssize_t sdebug_no_uld_show(struct device_driver * ddp, char * buf)
3070{
3071 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_no_uld);
3072}
3073DRIVER_ATTR(no_uld, S_IRUGO, sdebug_no_uld_show, NULL);
3074
Linus Torvalds1da177e2005-04-16 15:20:36 -07003075static ssize_t sdebug_scsi_level_show(struct device_driver * ddp, char * buf)
3076{
3077 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_scsi_level);
3078}
3079DRIVER_ATTR(scsi_level, S_IRUGO, sdebug_scsi_level_show, NULL);
3080
Douglas Gilbertc65b1442006-06-06 00:11:24 -04003081static ssize_t sdebug_virtual_gb_show(struct device_driver * ddp, char * buf)
3082{
3083 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_virtual_gb);
3084}
3085static ssize_t sdebug_virtual_gb_store(struct device_driver * ddp,
3086 const char * buf, size_t count)
3087{
3088 int n;
3089
3090 if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) {
3091 scsi_debug_virtual_gb = n;
FUJITA Tomonori28898872008-03-30 00:59:55 +09003092
3093 sdebug_capacity = get_sdebug_capacity();
3094
Douglas Gilbertc65b1442006-06-06 00:11:24 -04003095 return count;
3096 }
3097 return -EINVAL;
3098}
3099DRIVER_ATTR(virtual_gb, S_IRUGO | S_IWUSR, sdebug_virtual_gb_show,
3100 sdebug_virtual_gb_store);
3101
Linus Torvalds1da177e2005-04-16 15:20:36 -07003102static ssize_t sdebug_add_host_show(struct device_driver * ddp, char * buf)
3103{
3104 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_add_host);
3105}
3106
3107static ssize_t sdebug_add_host_store(struct device_driver * ddp,
3108 const char * buf, size_t count)
3109{
FUJITA Tomonorif3df41c2008-03-20 11:09:15 +09003110 int delta_hosts;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003111
FUJITA Tomonorif3df41c2008-03-20 11:09:15 +09003112 if (sscanf(buf, "%d", &delta_hosts) != 1)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003113 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003114 if (delta_hosts > 0) {
3115 do {
3116 sdebug_add_adapter();
3117 } while (--delta_hosts);
3118 } else if (delta_hosts < 0) {
3119 do {
3120 sdebug_remove_adapter();
3121 } while (++delta_hosts);
3122 }
3123 return count;
3124}
FUJITA Tomonorif3df41c2008-03-20 11:09:15 +09003125DRIVER_ATTR(add_host, S_IRUGO | S_IWUSR, sdebug_add_host_show,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003126 sdebug_add_host_store);
3127
Douglas Gilbert23183912006-09-16 20:30:47 -04003128static ssize_t sdebug_vpd_use_hostno_show(struct device_driver * ddp,
3129 char * buf)
3130{
3131 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_vpd_use_hostno);
3132}
3133static ssize_t sdebug_vpd_use_hostno_store(struct device_driver * ddp,
3134 const char * buf, size_t count)
3135{
3136 int n;
3137
3138 if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) {
3139 scsi_debug_vpd_use_hostno = n;
3140 return count;
3141 }
3142 return -EINVAL;
3143}
3144DRIVER_ATTR(vpd_use_hostno, S_IRUGO | S_IWUSR, sdebug_vpd_use_hostno_show,
3145 sdebug_vpd_use_hostno_store);
3146
Martin K. Petersen597136a2008-06-05 00:12:59 -04003147static ssize_t sdebug_sector_size_show(struct device_driver * ddp, char * buf)
3148{
3149 return scnprintf(buf, PAGE_SIZE, "%u\n", scsi_debug_sector_size);
3150}
3151DRIVER_ATTR(sector_size, S_IRUGO, sdebug_sector_size_show, NULL);
3152
Martin K. Petersenc6a44282009-01-04 03:08:19 -05003153static ssize_t sdebug_dix_show(struct device_driver *ddp, char *buf)
3154{
3155 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dix);
3156}
3157DRIVER_ATTR(dix, S_IRUGO, sdebug_dix_show, NULL);
3158
3159static ssize_t sdebug_dif_show(struct device_driver *ddp, char *buf)
3160{
3161 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dif);
3162}
3163DRIVER_ATTR(dif, S_IRUGO, sdebug_dif_show, NULL);
3164
3165static ssize_t sdebug_guard_show(struct device_driver *ddp, char *buf)
3166{
3167 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_guard);
3168}
3169DRIVER_ATTR(guard, S_IRUGO, sdebug_guard_show, NULL);
3170
3171static ssize_t sdebug_ato_show(struct device_driver *ddp, char *buf)
3172{
3173 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ato);
3174}
3175DRIVER_ATTR(ato, S_IRUGO, sdebug_ato_show, NULL);
3176
Martin K. Petersen44d92692009-10-15 14:45:27 -04003177static ssize_t sdebug_map_show(struct device_driver *ddp, char *buf)
3178{
3179 ssize_t count;
3180
Martin K. Petersen5b94e232011-03-08 02:08:11 -05003181 if (!scsi_debug_lbp())
Martin K. Petersen44d92692009-10-15 14:45:27 -04003182 return scnprintf(buf, PAGE_SIZE, "0-%u\n",
3183 sdebug_store_sectors);
3184
3185 count = bitmap_scnlistprintf(buf, PAGE_SIZE, map_storep, map_size);
3186
3187 buf[count++] = '\n';
3188 buf[count++] = 0;
3189
3190 return count;
3191}
3192DRIVER_ATTR(map, S_IRUGO, sdebug_map_show, NULL);
3193
Martin K. Petersenc6a44282009-01-04 03:08:19 -05003194
Douglas Gilbert23183912006-09-16 20:30:47 -04003195/* Note: The following function creates attribute files in the
3196 /sys/bus/pseudo/drivers/scsi_debug directory. The advantage of these
3197 files (over those found in the /sys/module/scsi_debug/parameters
3198 directory) is that auxiliary actions can be triggered when an attribute
3199 is changed. For example see: sdebug_add_host_store() above.
3200 */
Randy Dunlap6ecaff72006-07-11 20:53:22 -07003201static int do_create_driverfs_files(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003202{
Randy Dunlap6ecaff72006-07-11 20:53:22 -07003203 int ret;
3204
3205 ret = driver_create_file(&sdebug_driverfs_driver, &driver_attr_add_host);
3206 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_delay);
3207 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dev_size_mb);
3208 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dsense);
3209 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_every_nth);
Douglas Gilbert23183912006-09-16 20:30:47 -04003210 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_fake_rw);
Randy Dunlap6ecaff72006-07-11 20:53:22 -07003211 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_max_luns);
Douglas Gilbert78d4e5a2010-03-25 17:29:05 -04003212 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_max_queue);
Douglas Gilbert23183912006-09-16 20:30:47 -04003213 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_no_lun_0);
Douglas Gilbert78d4e5a2010-03-25 17:29:05 -04003214 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_no_uld);
Randy Dunlap6ecaff72006-07-11 20:53:22 -07003215 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_num_parts);
Douglas Gilbert23183912006-09-16 20:30:47 -04003216 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_num_tgts);
Randy Dunlap6ecaff72006-07-11 20:53:22 -07003217 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_ptype);
3218 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_opts);
3219 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_scsi_level);
Douglas Gilbert23183912006-09-16 20:30:47 -04003220 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_virtual_gb);
3221 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_vpd_use_hostno);
Martin K. Petersen597136a2008-06-05 00:12:59 -04003222 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_sector_size);
Martin K. Petersenc6a44282009-01-04 03:08:19 -05003223 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dix);
3224 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dif);
3225 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_guard);
3226 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_ato);
Martin K. Petersen44d92692009-10-15 14:45:27 -04003227 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_map);
Randy Dunlap6ecaff72006-07-11 20:53:22 -07003228 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003229}
3230
3231static void do_remove_driverfs_files(void)
3232{
Martin K. Petersen44d92692009-10-15 14:45:27 -04003233 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_map);
Martin K. Petersenc6a44282009-01-04 03:08:19 -05003234 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_ato);
3235 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_guard);
3236 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dif);
3237 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dix);
Martin K. Petersen597136a2008-06-05 00:12:59 -04003238 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_sector_size);
Douglas Gilbert23183912006-09-16 20:30:47 -04003239 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_vpd_use_hostno);
3240 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_virtual_gb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003241 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_scsi_level);
3242 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_opts);
3243 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_ptype);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003244 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_num_tgts);
Douglas Gilbert23183912006-09-16 20:30:47 -04003245 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_num_parts);
Douglas Gilbert78d4e5a2010-03-25 17:29:05 -04003246 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_no_uld);
Douglas Gilbert23183912006-09-16 20:30:47 -04003247 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_no_lun_0);
Douglas Gilbert78d4e5a2010-03-25 17:29:05 -04003248 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_max_queue);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003249 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_max_luns);
Douglas Gilbert23183912006-09-16 20:30:47 -04003250 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_fake_rw);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003251 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_every_nth);
3252 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dsense);
3253 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dev_size_mb);
3254 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_delay);
3255 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_add_host);
3256}
3257
Nicholas Bellinger9b906772010-09-06 17:24:28 -07003258struct device *pseudo_primary;
FUJITA Tomonori8dea0d02008-03-30 00:59:58 +09003259
Linus Torvalds1da177e2005-04-16 15:20:36 -07003260static int __init scsi_debug_init(void)
3261{
FUJITA Tomonori5f2578e2008-03-30 00:59:57 +09003262 unsigned long sz;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003263 int host_to_add;
3264 int k;
Randy Dunlap6ecaff72006-07-11 20:53:22 -07003265 int ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003266
Martin K. Petersen597136a2008-06-05 00:12:59 -04003267 switch (scsi_debug_sector_size) {
3268 case 512:
3269 case 1024:
3270 case 2048:
3271 case 4096:
3272 break;
3273 default:
Martin K. Petersenc6a44282009-01-04 03:08:19 -05003274 printk(KERN_ERR "scsi_debug_init: invalid sector_size %d\n",
Martin K. Petersen597136a2008-06-05 00:12:59 -04003275 scsi_debug_sector_size);
3276 return -EINVAL;
3277 }
3278
Martin K. Petersenc6a44282009-01-04 03:08:19 -05003279 switch (scsi_debug_dif) {
3280
3281 case SD_DIF_TYPE0_PROTECTION:
3282 case SD_DIF_TYPE1_PROTECTION:
Martin K. Petersen395cef02009-09-18 17:33:03 -04003283 case SD_DIF_TYPE2_PROTECTION:
Martin K. Petersenc6a44282009-01-04 03:08:19 -05003284 case SD_DIF_TYPE3_PROTECTION:
3285 break;
3286
3287 default:
Martin K. Petersen395cef02009-09-18 17:33:03 -04003288 printk(KERN_ERR "scsi_debug_init: dif must be 0, 1, 2 or 3\n");
Martin K. Petersenc6a44282009-01-04 03:08:19 -05003289 return -EINVAL;
3290 }
3291
3292 if (scsi_debug_guard > 1) {
3293 printk(KERN_ERR "scsi_debug_init: guard must be 0 or 1\n");
3294 return -EINVAL;
3295 }
3296
3297 if (scsi_debug_ato > 1) {
3298 printk(KERN_ERR "scsi_debug_init: ato must be 0 or 1\n");
3299 return -EINVAL;
3300 }
3301
Martin K. Petersenea61fca2009-05-15 00:40:33 -04003302 if (scsi_debug_physblk_exp > 15) {
3303 printk(KERN_ERR "scsi_debug_init: invalid physblk_exp %u\n",
3304 scsi_debug_physblk_exp);
3305 return -EINVAL;
3306 }
3307
3308 if (scsi_debug_lowest_aligned > 0x3fff) {
3309 printk(KERN_ERR "scsi_debug_init: lowest_aligned too big: %u\n",
3310 scsi_debug_lowest_aligned);
3311 return -EINVAL;
3312 }
3313
Linus Torvalds1da177e2005-04-16 15:20:36 -07003314 if (scsi_debug_dev_size_mb < 1)
3315 scsi_debug_dev_size_mb = 1; /* force minimum 1 MB ramdisk */
FUJITA Tomonori5f2578e2008-03-30 00:59:57 +09003316 sz = (unsigned long)scsi_debug_dev_size_mb * 1048576;
Martin K. Petersen597136a2008-06-05 00:12:59 -04003317 sdebug_store_sectors = sz / scsi_debug_sector_size;
FUJITA Tomonori28898872008-03-30 00:59:55 +09003318 sdebug_capacity = get_sdebug_capacity();
Linus Torvalds1da177e2005-04-16 15:20:36 -07003319
3320 /* play around with geometry, don't waste too much on track 0 */
3321 sdebug_heads = 8;
3322 sdebug_sectors_per = 32;
3323 if (scsi_debug_dev_size_mb >= 16)
3324 sdebug_heads = 32;
3325 else if (scsi_debug_dev_size_mb >= 256)
3326 sdebug_heads = 64;
3327 sdebug_cylinders_per = (unsigned long)sdebug_capacity /
3328 (sdebug_sectors_per * sdebug_heads);
3329 if (sdebug_cylinders_per >= 1024) {
3330 /* other LLDs do this; implies >= 1GB ram disk ... */
3331 sdebug_heads = 255;
3332 sdebug_sectors_per = 63;
3333 sdebug_cylinders_per = (unsigned long)sdebug_capacity /
3334 (sdebug_sectors_per * sdebug_heads);
3335 }
3336
Linus Torvalds1da177e2005-04-16 15:20:36 -07003337 fake_storep = vmalloc(sz);
3338 if (NULL == fake_storep) {
3339 printk(KERN_ERR "scsi_debug_init: out of memory, 1\n");
3340 return -ENOMEM;
3341 }
3342 memset(fake_storep, 0, sz);
3343 if (scsi_debug_num_parts > 0)
FUJITA Tomonorif58b0ef2008-03-30 00:59:54 +09003344 sdebug_build_parts(fake_storep, sz);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003345
Martin K. Petersenc6a44282009-01-04 03:08:19 -05003346 if (scsi_debug_dif) {
3347 int dif_size;
3348
3349 dif_size = sdebug_store_sectors * sizeof(struct sd_dif_tuple);
3350 dif_storep = vmalloc(dif_size);
3351
3352 printk(KERN_ERR "scsi_debug_init: dif_storep %u bytes @ %p\n",
3353 dif_size, dif_storep);
3354
3355 if (dif_storep == NULL) {
3356 printk(KERN_ERR "scsi_debug_init: out of mem. (DIX)\n");
3357 ret = -ENOMEM;
3358 goto free_vm;
3359 }
3360
3361 memset(dif_storep, 0xff, dif_size);
3362 }
3363
Martin K. Petersen5b94e232011-03-08 02:08:11 -05003364 /* Logical Block Provisioning */
3365 if (scsi_debug_lbp()) {
Martin K. Petersen44d92692009-10-15 14:45:27 -04003366 unsigned int map_bytes;
3367
Martin K. Petersen60147592010-08-19 11:49:00 -04003368 scsi_debug_unmap_max_blocks =
3369 clamp(scsi_debug_unmap_max_blocks, 0U, 0xffffffffU);
3370
3371 scsi_debug_unmap_max_desc =
3372 clamp(scsi_debug_unmap_max_desc, 0U, 256U);
3373
3374 scsi_debug_unmap_granularity =
3375 clamp(scsi_debug_unmap_granularity, 1U, 0xffffffffU);
3376
3377 if (scsi_debug_unmap_alignment &&
3378 scsi_debug_unmap_granularity < scsi_debug_unmap_alignment) {
Martin K. Petersen44d92692009-10-15 14:45:27 -04003379 printk(KERN_ERR
3380 "%s: ERR: unmap_granularity < unmap_alignment\n",
3381 __func__);
3382 return -EINVAL;
3383 }
3384
3385 map_size = (sdebug_store_sectors / scsi_debug_unmap_granularity);
3386 map_bytes = map_size >> 3;
3387 map_storep = vmalloc(map_bytes);
3388
3389 printk(KERN_INFO "scsi_debug_init: %lu provisioning blocks\n",
3390 map_size);
3391
3392 if (map_storep == NULL) {
3393 printk(KERN_ERR "scsi_debug_init: out of mem. (MAP)\n");
3394 ret = -ENOMEM;
3395 goto free_vm;
3396 }
3397
3398 memset(map_storep, 0x0, map_bytes);
3399
3400 /* Map first 1KB for partition table */
3401 if (scsi_debug_num_parts)
3402 map_region(0, 2);
3403 }
3404
Nicholas Bellinger9b906772010-09-06 17:24:28 -07003405 pseudo_primary = root_device_register("pseudo_0");
3406 if (IS_ERR(pseudo_primary)) {
3407 printk(KERN_WARNING "scsi_debug: root_device_register() error\n");
3408 ret = PTR_ERR(pseudo_primary);
Randy Dunlap6ecaff72006-07-11 20:53:22 -07003409 goto free_vm;
3410 }
3411 ret = bus_register(&pseudo_lld_bus);
3412 if (ret < 0) {
3413 printk(KERN_WARNING "scsi_debug: bus_register error: %d\n",
3414 ret);
3415 goto dev_unreg;
3416 }
3417 ret = driver_register(&sdebug_driverfs_driver);
3418 if (ret < 0) {
3419 printk(KERN_WARNING "scsi_debug: driver_register error: %d\n",
3420 ret);
3421 goto bus_unreg;
3422 }
3423 ret = do_create_driverfs_files();
3424 if (ret < 0) {
3425 printk(KERN_WARNING "scsi_debug: driver_create_file error: %d\n",
3426 ret);
3427 goto del_files;
3428 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003429
Randy Dunlap6ecaff72006-07-11 20:53:22 -07003430 init_all_queued();
Linus Torvalds1da177e2005-04-16 15:20:36 -07003431
Linus Torvalds1da177e2005-04-16 15:20:36 -07003432 host_to_add = scsi_debug_add_host;
3433 scsi_debug_add_host = 0;
3434
3435 for (k = 0; k < host_to_add; k++) {
3436 if (sdebug_add_adapter()) {
3437 printk(KERN_ERR "scsi_debug_init: "
3438 "sdebug_add_adapter failed k=%d\n", k);
3439 break;
3440 }
3441 }
3442
3443 if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) {
3444 printk(KERN_INFO "scsi_debug_init: built %d host(s)\n",
3445 scsi_debug_add_host);
3446 }
3447 return 0;
Randy Dunlap6ecaff72006-07-11 20:53:22 -07003448
3449del_files:
3450 do_remove_driverfs_files();
3451 driver_unregister(&sdebug_driverfs_driver);
3452bus_unreg:
3453 bus_unregister(&pseudo_lld_bus);
3454dev_unreg:
Nicholas Bellinger9b906772010-09-06 17:24:28 -07003455 root_device_unregister(pseudo_primary);
Randy Dunlap6ecaff72006-07-11 20:53:22 -07003456free_vm:
Martin K. Petersen44d92692009-10-15 14:45:27 -04003457 if (map_storep)
3458 vfree(map_storep);
Martin K. Petersenc6a44282009-01-04 03:08:19 -05003459 if (dif_storep)
3460 vfree(dif_storep);
Randy Dunlap6ecaff72006-07-11 20:53:22 -07003461 vfree(fake_storep);
3462
3463 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003464}
3465
3466static void __exit scsi_debug_exit(void)
3467{
3468 int k = scsi_debug_add_host;
3469
3470 stop_all_queued();
3471 for (; k; k--)
3472 sdebug_remove_adapter();
3473 do_remove_driverfs_files();
3474 driver_unregister(&sdebug_driverfs_driver);
3475 bus_unregister(&pseudo_lld_bus);
Nicholas Bellinger9b906772010-09-06 17:24:28 -07003476 root_device_unregister(pseudo_primary);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003477
Martin K. Petersenc6a44282009-01-04 03:08:19 -05003478 if (dif_storep)
3479 vfree(dif_storep);
3480
Linus Torvalds1da177e2005-04-16 15:20:36 -07003481 vfree(fake_storep);
3482}
3483
3484device_initcall(scsi_debug_init);
3485module_exit(scsi_debug_exit);
3486
Linus Torvalds1da177e2005-04-16 15:20:36 -07003487static void sdebug_release_adapter(struct device * dev)
3488{
3489 struct sdebug_host_info *sdbg_host;
3490
3491 sdbg_host = to_sdebug_host(dev);
3492 kfree(sdbg_host);
3493}
3494
3495static int sdebug_add_adapter(void)
3496{
3497 int k, devs_per_host;
3498 int error = 0;
3499 struct sdebug_host_info *sdbg_host;
FUJITA Tomonori8b40228f2008-03-20 11:09:18 +09003500 struct sdebug_dev_info *sdbg_devinfo, *tmp;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003501
Douglas Gilbertc65b1442006-06-06 00:11:24 -04003502 sdbg_host = kzalloc(sizeof(*sdbg_host),GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003503 if (NULL == sdbg_host) {
3504 printk(KERN_ERR "%s: out of memory at line %d\n",
Harvey Harrisoncadbd4a2008-07-03 23:47:27 -07003505 __func__, __LINE__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003506 return -ENOMEM;
3507 }
3508
Linus Torvalds1da177e2005-04-16 15:20:36 -07003509 INIT_LIST_HEAD(&sdbg_host->dev_info_list);
3510
3511 devs_per_host = scsi_debug_num_tgts * scsi_debug_max_luns;
3512 for (k = 0; k < devs_per_host; k++) {
FUJITA Tomonori5cb2fc02008-03-20 11:09:16 +09003513 sdbg_devinfo = sdebug_device_create(sdbg_host, GFP_KERNEL);
3514 if (!sdbg_devinfo) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003515 printk(KERN_ERR "%s: out of memory at line %d\n",
Harvey Harrisoncadbd4a2008-07-03 23:47:27 -07003516 __func__, __LINE__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003517 error = -ENOMEM;
3518 goto clean;
3519 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003520 }
3521
3522 spin_lock(&sdebug_host_list_lock);
3523 list_add_tail(&sdbg_host->host_list, &sdebug_host_list);
3524 spin_unlock(&sdebug_host_list_lock);
3525
3526 sdbg_host->dev.bus = &pseudo_lld_bus;
Nicholas Bellinger9b906772010-09-06 17:24:28 -07003527 sdbg_host->dev.parent = pseudo_primary;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003528 sdbg_host->dev.release = &sdebug_release_adapter;
Kay Sievers71610f52008-12-03 22:41:36 +01003529 dev_set_name(&sdbg_host->dev, "adapter%d", scsi_debug_add_host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003530
3531 error = device_register(&sdbg_host->dev);
3532
3533 if (error)
3534 goto clean;
3535
3536 ++scsi_debug_add_host;
3537 return error;
3538
3539clean:
FUJITA Tomonori8b40228f2008-03-20 11:09:18 +09003540 list_for_each_entry_safe(sdbg_devinfo, tmp, &sdbg_host->dev_info_list,
3541 dev_list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003542 list_del(&sdbg_devinfo->dev_list);
3543 kfree(sdbg_devinfo);
3544 }
3545
3546 kfree(sdbg_host);
3547 return error;
3548}
3549
3550static void sdebug_remove_adapter(void)
3551{
3552 struct sdebug_host_info * sdbg_host = NULL;
3553
3554 spin_lock(&sdebug_host_list_lock);
3555 if (!list_empty(&sdebug_host_list)) {
3556 sdbg_host = list_entry(sdebug_host_list.prev,
3557 struct sdebug_host_info, host_list);
3558 list_del(&sdbg_host->host_list);
3559 }
3560 spin_unlock(&sdebug_host_list_lock);
3561
3562 if (!sdbg_host)
3563 return;
3564
3565 device_unregister(&sdbg_host->dev);
3566 --scsi_debug_add_host;
3567}
3568
FUJITA Tomonori639db472008-03-20 11:09:19 +09003569static
Jeff Garzikf2812332010-11-16 02:10:29 -05003570int scsi_debug_queuecommand_lck(struct scsi_cmnd *SCpnt, done_funct_t done)
FUJITA Tomonori639db472008-03-20 11:09:19 +09003571{
3572 unsigned char *cmd = (unsigned char *) SCpnt->cmnd;
3573 int len, k;
3574 unsigned int num;
3575 unsigned long long lba;
Martin K. Petersen395cef02009-09-18 17:33:03 -04003576 u32 ei_lba;
FUJITA Tomonori639db472008-03-20 11:09:19 +09003577 int errsts = 0;
3578 int target = SCpnt->device->id;
3579 struct sdebug_dev_info *devip = NULL;
3580 int inj_recovered = 0;
3581 int inj_transport = 0;
Martin K. Petersenc6a44282009-01-04 03:08:19 -05003582 int inj_dif = 0;
3583 int inj_dix = 0;
FUJITA Tomonori639db472008-03-20 11:09:19 +09003584 int delay_override = 0;
Martin K. Petersen44d92692009-10-15 14:45:27 -04003585 int unmap = 0;
FUJITA Tomonori639db472008-03-20 11:09:19 +09003586
3587 scsi_set_resid(SCpnt, 0);
3588 if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && cmd) {
3589 printk(KERN_INFO "scsi_debug: cmd ");
3590 for (k = 0, len = SCpnt->cmd_len; k < len; ++k)
3591 printk("%02x ", (int)cmd[k]);
3592 printk("\n");
3593 }
3594
3595 if (target == SCpnt->device->host->hostt->this_id) {
3596 printk(KERN_INFO "scsi_debug: initiator's id used as "
3597 "target!\n");
3598 return schedule_resp(SCpnt, NULL, done,
3599 DID_NO_CONNECT << 16, 0);
3600 }
3601
3602 if ((SCpnt->device->lun >= scsi_debug_max_luns) &&
3603 (SCpnt->device->lun != SAM2_WLUN_REPORT_LUNS))
3604 return schedule_resp(SCpnt, NULL, done,
3605 DID_NO_CONNECT << 16, 0);
3606 devip = devInfoReg(SCpnt->device);
3607 if (NULL == devip)
3608 return schedule_resp(SCpnt, NULL, done,
3609 DID_NO_CONNECT << 16, 0);
3610
3611 if ((scsi_debug_every_nth != 0) &&
3612 (++scsi_debug_cmnd_count >= abs(scsi_debug_every_nth))) {
3613 scsi_debug_cmnd_count = 0;
3614 if (scsi_debug_every_nth < -1)
3615 scsi_debug_every_nth = -1;
3616 if (SCSI_DEBUG_OPT_TIMEOUT & scsi_debug_opts)
3617 return 0; /* ignore command causing timeout */
3618 else if (SCSI_DEBUG_OPT_RECOVERED_ERR & scsi_debug_opts)
3619 inj_recovered = 1; /* to reads and writes below */
3620 else if (SCSI_DEBUG_OPT_TRANSPORT_ERR & scsi_debug_opts)
3621 inj_transport = 1; /* to reads and writes below */
Martin K. Petersenc6a44282009-01-04 03:08:19 -05003622 else if (SCSI_DEBUG_OPT_DIF_ERR & scsi_debug_opts)
3623 inj_dif = 1; /* to reads and writes below */
3624 else if (SCSI_DEBUG_OPT_DIX_ERR & scsi_debug_opts)
3625 inj_dix = 1; /* to reads and writes below */
FUJITA Tomonori639db472008-03-20 11:09:19 +09003626 }
3627
3628 if (devip->wlun) {
3629 switch (*cmd) {
3630 case INQUIRY:
3631 case REQUEST_SENSE:
3632 case TEST_UNIT_READY:
3633 case REPORT_LUNS:
3634 break; /* only allowable wlun commands */
3635 default:
3636 if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
3637 printk(KERN_INFO "scsi_debug: Opcode: 0x%x "
3638 "not supported for wlun\n", *cmd);
3639 mk_sense_buffer(devip, ILLEGAL_REQUEST,
3640 INVALID_OPCODE, 0);
3641 errsts = check_condition_result;
3642 return schedule_resp(SCpnt, devip, done, errsts,
3643 0);
3644 }
3645 }
3646
3647 switch (*cmd) {
3648 case INQUIRY: /* mandatory, ignore unit attention */
3649 delay_override = 1;
3650 errsts = resp_inquiry(SCpnt, target, devip);
3651 break;
3652 case REQUEST_SENSE: /* mandatory, ignore unit attention */
3653 delay_override = 1;
3654 errsts = resp_requests(SCpnt, devip);
3655 break;
3656 case REZERO_UNIT: /* actually this is REWIND for SSC */
3657 case START_STOP:
3658 errsts = resp_start_stop(SCpnt, devip);
3659 break;
3660 case ALLOW_MEDIUM_REMOVAL:
3661 errsts = check_readiness(SCpnt, 1, devip);
3662 if (errsts)
3663 break;
3664 if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
3665 printk(KERN_INFO "scsi_debug: Medium removal %s\n",
3666 cmd[4] ? "inhibited" : "enabled");
3667 break;
3668 case SEND_DIAGNOSTIC: /* mandatory */
3669 errsts = check_readiness(SCpnt, 1, devip);
3670 break;
3671 case TEST_UNIT_READY: /* mandatory */
3672 delay_override = 1;
3673 errsts = check_readiness(SCpnt, 0, devip);
3674 break;
3675 case RESERVE:
3676 errsts = check_readiness(SCpnt, 1, devip);
3677 break;
3678 case RESERVE_10:
3679 errsts = check_readiness(SCpnt, 1, devip);
3680 break;
3681 case RELEASE:
3682 errsts = check_readiness(SCpnt, 1, devip);
3683 break;
3684 case RELEASE_10:
3685 errsts = check_readiness(SCpnt, 1, devip);
3686 break;
3687 case READ_CAPACITY:
3688 errsts = resp_readcap(SCpnt, devip);
3689 break;
3690 case SERVICE_ACTION_IN:
Martin K. Petersen44d92692009-10-15 14:45:27 -04003691 if (cmd[1] == SAI_READ_CAPACITY_16)
3692 errsts = resp_readcap16(SCpnt, devip);
3693 else if (cmd[1] == SAI_GET_LBA_STATUS) {
3694
Martin K. Petersen5b94e232011-03-08 02:08:11 -05003695 if (scsi_debug_lbp() == 0) {
Martin K. Petersen44d92692009-10-15 14:45:27 -04003696 mk_sense_buffer(devip, ILLEGAL_REQUEST,
3697 INVALID_COMMAND_OPCODE, 0);
3698 errsts = check_condition_result;
3699 } else
3700 errsts = resp_get_lba_status(SCpnt, devip);
3701 } else {
FUJITA Tomonori639db472008-03-20 11:09:19 +09003702 mk_sense_buffer(devip, ILLEGAL_REQUEST,
3703 INVALID_OPCODE, 0);
3704 errsts = check_condition_result;
FUJITA Tomonori639db472008-03-20 11:09:19 +09003705 }
FUJITA Tomonori639db472008-03-20 11:09:19 +09003706 break;
3707 case MAINTENANCE_IN:
3708 if (MI_REPORT_TARGET_PGS != cmd[1]) {
3709 mk_sense_buffer(devip, ILLEGAL_REQUEST,
3710 INVALID_OPCODE, 0);
3711 errsts = check_condition_result;
3712 break;
3713 }
3714 errsts = resp_report_tgtpgs(SCpnt, devip);
3715 break;
3716 case READ_16:
3717 case READ_12:
3718 case READ_10:
Martin K. Petersen395cef02009-09-18 17:33:03 -04003719 /* READ{10,12,16} and DIF Type 2 are natural enemies */
3720 if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION &&
3721 cmd[1] & 0xe0) {
3722 mk_sense_buffer(devip, ILLEGAL_REQUEST,
3723 INVALID_COMMAND_OPCODE, 0);
3724 errsts = check_condition_result;
3725 break;
3726 }
3727
3728 if ((scsi_debug_dif == SD_DIF_TYPE1_PROTECTION ||
3729 scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) &&
3730 (cmd[1] & 0xe0) == 0)
3731 printk(KERN_ERR "Unprotected RD/WR to DIF device\n");
3732
3733 /* fall through */
FUJITA Tomonori639db472008-03-20 11:09:19 +09003734 case READ_6:
Martin K. Petersen395cef02009-09-18 17:33:03 -04003735read:
FUJITA Tomonori639db472008-03-20 11:09:19 +09003736 errsts = check_readiness(SCpnt, 0, devip);
3737 if (errsts)
3738 break;
3739 if (scsi_debug_fake_rw)
3740 break;
Martin K. Petersen395cef02009-09-18 17:33:03 -04003741 get_data_transfer_info(cmd, &lba, &num, &ei_lba);
3742 errsts = resp_read(SCpnt, lba, num, devip, ei_lba);
FUJITA Tomonori639db472008-03-20 11:09:19 +09003743 if (inj_recovered && (0 == errsts)) {
3744 mk_sense_buffer(devip, RECOVERED_ERROR,
3745 THRESHOLD_EXCEEDED, 0);
3746 errsts = check_condition_result;
3747 } else if (inj_transport && (0 == errsts)) {
3748 mk_sense_buffer(devip, ABORTED_COMMAND,
3749 TRANSPORT_PROBLEM, ACK_NAK_TO);
3750 errsts = check_condition_result;
Martin K. Petersenc6a44282009-01-04 03:08:19 -05003751 } else if (inj_dif && (0 == errsts)) {
3752 mk_sense_buffer(devip, ABORTED_COMMAND, 0x10, 1);
3753 errsts = illegal_condition_result;
3754 } else if (inj_dix && (0 == errsts)) {
3755 mk_sense_buffer(devip, ILLEGAL_REQUEST, 0x10, 1);
3756 errsts = illegal_condition_result;
FUJITA Tomonori639db472008-03-20 11:09:19 +09003757 }
3758 break;
3759 case REPORT_LUNS: /* mandatory, ignore unit attention */
3760 delay_override = 1;
3761 errsts = resp_report_luns(SCpnt, devip);
3762 break;
3763 case VERIFY: /* 10 byte SBC-2 command */
3764 errsts = check_readiness(SCpnt, 0, devip);
3765 break;
3766 case WRITE_16:
3767 case WRITE_12:
3768 case WRITE_10:
Martin K. Petersen395cef02009-09-18 17:33:03 -04003769 /* WRITE{10,12,16} and DIF Type 2 are natural enemies */
3770 if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION &&
3771 cmd[1] & 0xe0) {
3772 mk_sense_buffer(devip, ILLEGAL_REQUEST,
3773 INVALID_COMMAND_OPCODE, 0);
3774 errsts = check_condition_result;
3775 break;
3776 }
3777
3778 if ((scsi_debug_dif == SD_DIF_TYPE1_PROTECTION ||
3779 scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) &&
3780 (cmd[1] & 0xe0) == 0)
3781 printk(KERN_ERR "Unprotected RD/WR to DIF device\n");
3782
3783 /* fall through */
FUJITA Tomonori639db472008-03-20 11:09:19 +09003784 case WRITE_6:
Martin K. Petersen395cef02009-09-18 17:33:03 -04003785write:
FUJITA Tomonori639db472008-03-20 11:09:19 +09003786 errsts = check_readiness(SCpnt, 0, devip);
3787 if (errsts)
3788 break;
3789 if (scsi_debug_fake_rw)
3790 break;
Martin K. Petersen395cef02009-09-18 17:33:03 -04003791 get_data_transfer_info(cmd, &lba, &num, &ei_lba);
3792 errsts = resp_write(SCpnt, lba, num, devip, ei_lba);
FUJITA Tomonori639db472008-03-20 11:09:19 +09003793 if (inj_recovered && (0 == errsts)) {
3794 mk_sense_buffer(devip, RECOVERED_ERROR,
3795 THRESHOLD_EXCEEDED, 0);
3796 errsts = check_condition_result;
Martin K. Petersenc6a44282009-01-04 03:08:19 -05003797 } else if (inj_dif && (0 == errsts)) {
3798 mk_sense_buffer(devip, ABORTED_COMMAND, 0x10, 1);
3799 errsts = illegal_condition_result;
3800 } else if (inj_dix && (0 == errsts)) {
3801 mk_sense_buffer(devip, ILLEGAL_REQUEST, 0x10, 1);
3802 errsts = illegal_condition_result;
FUJITA Tomonori639db472008-03-20 11:09:19 +09003803 }
3804 break;
Martin K. Petersen44d92692009-10-15 14:45:27 -04003805 case WRITE_SAME_16:
Martin K. Petersen5b94e232011-03-08 02:08:11 -05003806 case WRITE_SAME:
Martin K. Petersen60147592010-08-19 11:49:00 -04003807 if (cmd[1] & 0x8) {
Martin K. Petersen5b94e232011-03-08 02:08:11 -05003808 if ((*cmd == WRITE_SAME_16 && scsi_debug_lbpws == 0) ||
3809 (*cmd == WRITE_SAME && scsi_debug_lbpws10 == 0)) {
Martin K. Petersen60147592010-08-19 11:49:00 -04003810 mk_sense_buffer(devip, ILLEGAL_REQUEST,
3811 INVALID_FIELD_IN_CDB, 0);
3812 errsts = check_condition_result;
3813 } else
3814 unmap = 1;
3815 }
3816 if (errsts)
3817 break;
Martin K. Petersen44d92692009-10-15 14:45:27 -04003818 errsts = check_readiness(SCpnt, 0, devip);
3819 if (errsts)
3820 break;
3821 get_data_transfer_info(cmd, &lba, &num, &ei_lba);
3822 errsts = resp_write_same(SCpnt, lba, num, devip, ei_lba, unmap);
3823 break;
3824 case UNMAP:
3825 errsts = check_readiness(SCpnt, 0, devip);
3826 if (errsts)
3827 break;
3828
Martin K. Petersen5b94e232011-03-08 02:08:11 -05003829 if (scsi_debug_unmap_max_desc == 0 || scsi_debug_lbpu == 0) {
Martin K. Petersen44d92692009-10-15 14:45:27 -04003830 mk_sense_buffer(devip, ILLEGAL_REQUEST,
3831 INVALID_COMMAND_OPCODE, 0);
3832 errsts = check_condition_result;
3833 } else
3834 errsts = resp_unmap(SCpnt, devip);
3835 break;
FUJITA Tomonori639db472008-03-20 11:09:19 +09003836 case MODE_SENSE:
3837 case MODE_SENSE_10:
3838 errsts = resp_mode_sense(SCpnt, target, devip);
3839 break;
3840 case MODE_SELECT:
3841 errsts = resp_mode_select(SCpnt, 1, devip);
3842 break;
3843 case MODE_SELECT_10:
3844 errsts = resp_mode_select(SCpnt, 0, devip);
3845 break;
3846 case LOG_SENSE:
3847 errsts = resp_log_sense(SCpnt, devip);
3848 break;
3849 case SYNCHRONIZE_CACHE:
3850 delay_override = 1;
3851 errsts = check_readiness(SCpnt, 0, devip);
3852 break;
3853 case WRITE_BUFFER:
3854 errsts = check_readiness(SCpnt, 1, devip);
3855 break;
3856 case XDWRITEREAD_10:
3857 if (!scsi_bidi_cmnd(SCpnt)) {
3858 mk_sense_buffer(devip, ILLEGAL_REQUEST,
3859 INVALID_FIELD_IN_CDB, 0);
3860 errsts = check_condition_result;
3861 break;
3862 }
3863
3864 errsts = check_readiness(SCpnt, 0, devip);
3865 if (errsts)
3866 break;
3867 if (scsi_debug_fake_rw)
3868 break;
Martin K. Petersen395cef02009-09-18 17:33:03 -04003869 get_data_transfer_info(cmd, &lba, &num, &ei_lba);
3870 errsts = resp_read(SCpnt, lba, num, devip, ei_lba);
FUJITA Tomonori639db472008-03-20 11:09:19 +09003871 if (errsts)
3872 break;
Martin K. Petersen395cef02009-09-18 17:33:03 -04003873 errsts = resp_write(SCpnt, lba, num, devip, ei_lba);
FUJITA Tomonori639db472008-03-20 11:09:19 +09003874 if (errsts)
3875 break;
3876 errsts = resp_xdwriteread(SCpnt, lba, num, devip);
3877 break;
Martin K. Petersen395cef02009-09-18 17:33:03 -04003878 case VARIABLE_LENGTH_CMD:
3879 if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION) {
3880
3881 if ((cmd[10] & 0xe0) == 0)
3882 printk(KERN_ERR
3883 "Unprotected RD/WR to DIF device\n");
3884
3885 if (cmd[9] == READ_32) {
3886 BUG_ON(SCpnt->cmd_len < 32);
3887 goto read;
3888 }
3889
3890 if (cmd[9] == WRITE_32) {
3891 BUG_ON(SCpnt->cmd_len < 32);
3892 goto write;
3893 }
3894 }
3895
3896 mk_sense_buffer(devip, ILLEGAL_REQUEST,
3897 INVALID_FIELD_IN_CDB, 0);
3898 errsts = check_condition_result;
3899 break;
3900
FUJITA Tomonori639db472008-03-20 11:09:19 +09003901 default:
3902 if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
3903 printk(KERN_INFO "scsi_debug: Opcode: 0x%x not "
3904 "supported\n", *cmd);
3905 errsts = check_readiness(SCpnt, 1, devip);
3906 if (errsts)
3907 break; /* Unit attention takes precedence */
3908 mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_OPCODE, 0);
3909 errsts = check_condition_result;
3910 break;
3911 }
3912 return schedule_resp(SCpnt, devip, done, errsts,
3913 (delay_override ? 0 : scsi_debug_delay));
3914}
3915
Jeff Garzikf2812332010-11-16 02:10:29 -05003916static DEF_SCSI_QCMD(scsi_debug_queuecommand)
3917
FUJITA Tomonori9e603ca2008-03-02 18:30:16 +09003918static struct scsi_host_template sdebug_driver_template = {
3919 .proc_info = scsi_debug_proc_info,
3920 .proc_name = sdebug_proc_name,
3921 .name = "SCSI DEBUG",
3922 .info = scsi_debug_info,
3923 .slave_alloc = scsi_debug_slave_alloc,
3924 .slave_configure = scsi_debug_slave_configure,
3925 .slave_destroy = scsi_debug_slave_destroy,
3926 .ioctl = scsi_debug_ioctl,
3927 .queuecommand = scsi_debug_queuecommand,
3928 .eh_abort_handler = scsi_debug_abort,
3929 .eh_bus_reset_handler = scsi_debug_bus_reset,
3930 .eh_device_reset_handler = scsi_debug_device_reset,
3931 .eh_host_reset_handler = scsi_debug_host_reset,
3932 .bios_param = scsi_debug_biosparam,
3933 .can_queue = SCSI_DEBUG_CANQUEUE,
3934 .this_id = 7,
3935 .sg_tablesize = 256,
3936 .cmd_per_lun = 16,
3937 .max_sectors = 0xffff,
3938 .use_clustering = DISABLE_CLUSTERING,
3939 .module = THIS_MODULE,
3940};
3941
Linus Torvalds1da177e2005-04-16 15:20:36 -07003942static int sdebug_driver_probe(struct device * dev)
3943{
3944 int error = 0;
3945 struct sdebug_host_info *sdbg_host;
3946 struct Scsi_Host *hpnt;
Martin K. Petersenc6a44282009-01-04 03:08:19 -05003947 int host_prot;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003948
3949 sdbg_host = to_sdebug_host(dev);
3950
Douglas Gilbert78d4e5a2010-03-25 17:29:05 -04003951 sdebug_driver_template.can_queue = scsi_debug_max_queue;
3952 hpnt = scsi_host_alloc(&sdebug_driver_template, sizeof(sdbg_host));
3953 if (NULL == hpnt) {
3954 printk(KERN_ERR "%s: scsi_register failed\n", __func__);
3955 error = -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003956 return error;
Douglas Gilbert78d4e5a2010-03-25 17:29:05 -04003957 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003958
3959 sdbg_host->shost = hpnt;
3960 *((struct sdebug_host_info **)hpnt->hostdata) = sdbg_host;
3961 if ((hpnt->this_id >= 0) && (scsi_debug_num_tgts > hpnt->this_id))
3962 hpnt->max_id = scsi_debug_num_tgts + 1;
3963 else
3964 hpnt->max_id = scsi_debug_num_tgts;
Douglas Gilbertc65b1442006-06-06 00:11:24 -04003965 hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; /* = scsi_debug_max_luns; */
Linus Torvalds1da177e2005-04-16 15:20:36 -07003966
Martin K. Petersenc6a44282009-01-04 03:08:19 -05003967 host_prot = 0;
3968
3969 switch (scsi_debug_dif) {
3970
3971 case SD_DIF_TYPE1_PROTECTION:
3972 host_prot = SHOST_DIF_TYPE1_PROTECTION;
3973 if (scsi_debug_dix)
3974 host_prot |= SHOST_DIX_TYPE1_PROTECTION;
3975 break;
3976
3977 case SD_DIF_TYPE2_PROTECTION:
3978 host_prot = SHOST_DIF_TYPE2_PROTECTION;
3979 if (scsi_debug_dix)
3980 host_prot |= SHOST_DIX_TYPE2_PROTECTION;
3981 break;
3982
3983 case SD_DIF_TYPE3_PROTECTION:
3984 host_prot = SHOST_DIF_TYPE3_PROTECTION;
3985 if (scsi_debug_dix)
3986 host_prot |= SHOST_DIX_TYPE3_PROTECTION;
3987 break;
3988
3989 default:
3990 if (scsi_debug_dix)
3991 host_prot |= SHOST_DIX_TYPE0_PROTECTION;
3992 break;
3993 }
3994
3995 scsi_host_set_prot(hpnt, host_prot);
3996
3997 printk(KERN_INFO "scsi_debug: host protection%s%s%s%s%s%s%s\n",
3998 (host_prot & SHOST_DIF_TYPE1_PROTECTION) ? " DIF1" : "",
3999 (host_prot & SHOST_DIF_TYPE2_PROTECTION) ? " DIF2" : "",
4000 (host_prot & SHOST_DIF_TYPE3_PROTECTION) ? " DIF3" : "",
4001 (host_prot & SHOST_DIX_TYPE0_PROTECTION) ? " DIX0" : "",
4002 (host_prot & SHOST_DIX_TYPE1_PROTECTION) ? " DIX1" : "",
4003 (host_prot & SHOST_DIX_TYPE2_PROTECTION) ? " DIX2" : "",
4004 (host_prot & SHOST_DIX_TYPE3_PROTECTION) ? " DIX3" : "");
4005
4006 if (scsi_debug_guard == 1)
4007 scsi_host_set_guard(hpnt, SHOST_DIX_GUARD_IP);
4008 else
4009 scsi_host_set_guard(hpnt, SHOST_DIX_GUARD_CRC);
4010
Linus Torvalds1da177e2005-04-16 15:20:36 -07004011 error = scsi_add_host(hpnt, &sdbg_host->dev);
4012 if (error) {
Harvey Harrisoncadbd4a2008-07-03 23:47:27 -07004013 printk(KERN_ERR "%s: scsi_add_host failed\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004014 error = -ENODEV;
4015 scsi_host_put(hpnt);
4016 } else
4017 scsi_scan_host(hpnt);
4018
4019
4020 return error;
4021}
4022
4023static int sdebug_driver_remove(struct device * dev)
4024{
Linus Torvalds1da177e2005-04-16 15:20:36 -07004025 struct sdebug_host_info *sdbg_host;
FUJITA Tomonori8b40228f2008-03-20 11:09:18 +09004026 struct sdebug_dev_info *sdbg_devinfo, *tmp;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004027
4028 sdbg_host = to_sdebug_host(dev);
4029
4030 if (!sdbg_host) {
4031 printk(KERN_ERR "%s: Unable to locate host info\n",
Harvey Harrisoncadbd4a2008-07-03 23:47:27 -07004032 __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004033 return -ENODEV;
4034 }
4035
4036 scsi_remove_host(sdbg_host->shost);
4037
FUJITA Tomonori8b40228f2008-03-20 11:09:18 +09004038 list_for_each_entry_safe(sdbg_devinfo, tmp, &sdbg_host->dev_info_list,
4039 dev_list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07004040 list_del(&sdbg_devinfo->dev_list);
4041 kfree(sdbg_devinfo);
4042 }
4043
4044 scsi_host_put(sdbg_host->shost);
4045 return 0;
4046}
4047
FUJITA Tomonori8dea0d02008-03-30 00:59:58 +09004048static int pseudo_lld_bus_match(struct device *dev,
4049 struct device_driver *dev_driver)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004050{
FUJITA Tomonori8dea0d02008-03-30 00:59:58 +09004051 return 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004052}
FUJITA Tomonori8dea0d02008-03-30 00:59:58 +09004053
4054static struct bus_type pseudo_lld_bus = {
4055 .name = "pseudo",
4056 .match = pseudo_lld_bus_match,
4057 .probe = sdebug_driver_probe,
4058 .remove = sdebug_driver_remove,
4059};