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scsi_debug.c
4076 lines (3591 loc) · 119 KB
/
scsi_debug.c
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/*
* vvvvvvvvvvvvvvvvvvvvvvv Original vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
* Copyright (C) 1992 Eric Youngdale
* Simulate a host adapter with 2 disks attached. Do a lot of checking
* to make sure that we are not getting blocks mixed up, and PANIC if
* anything out of the ordinary is seen.
* ^^^^^^^^^^^^^^^^^^^^^^^ Original ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
*
* This version is more generic, simulating a variable number of disk
* (or disk like devices) sharing a common amount of RAM. To be more
* realistic, the simulated devices have the transport attributes of
* SAS disks.
*
*
* For documentation see http://sg.danny.cz/sg/sdebug26.html
*
* D. Gilbert (dpg) work for Magneto-Optical device test [20010421]
* dpg: work for devfs large number of disks [20010809]
* forked for lk 2.5 series [20011216, 20020101]
* use vmalloc() more inquiry+mode_sense [20020302]
* add timers for delayed responses [20020721]
* Patrick Mansfield <patmans@us.ibm.com> max_luns+scsi_level [20021031]
* Mike Anderson <andmike@us.ibm.com> sysfs work [20021118]
* dpg: change style of boot options to "scsi_debug.num_tgts=2" and
* module options to "modprobe scsi_debug num_tgts=2" [20021221]
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/timer.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/string.h>
#include <linux/genhd.h>
#include <linux/fs.h>
#include <linux/init.h>
#include <linux/proc_fs.h>
#include <linux/vmalloc.h>
#include <linux/moduleparam.h>
#include <linux/scatterlist.h>
#include <linux/blkdev.h>
#include <linux/crc-t10dif.h>
#include <net/checksum.h>
#include <asm/unaligned.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsicam.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_dbg.h>
#include "sd.h"
#include "scsi_logging.h"
#define SCSI_DEBUG_VERSION "1.82"
static const char * scsi_debug_version_date = "20100324";
/* Additional Sense Code (ASC) */
#define NO_ADDITIONAL_SENSE 0x0
#define LOGICAL_UNIT_NOT_READY 0x4
#define UNRECOVERED_READ_ERR 0x11
#define PARAMETER_LIST_LENGTH_ERR 0x1a
#define INVALID_OPCODE 0x20
#define ADDR_OUT_OF_RANGE 0x21
#define INVALID_COMMAND_OPCODE 0x20
#define INVALID_FIELD_IN_CDB 0x24
#define INVALID_FIELD_IN_PARAM_LIST 0x26
#define POWERON_RESET 0x29
#define SAVING_PARAMS_UNSUP 0x39
#define TRANSPORT_PROBLEM 0x4b
#define THRESHOLD_EXCEEDED 0x5d
#define LOW_POWER_COND_ON 0x5e
/* Additional Sense Code Qualifier (ASCQ) */
#define ACK_NAK_TO 0x3
#define SDEBUG_TAGGED_QUEUING 0 /* 0 | MSG_SIMPLE_TAG | MSG_ORDERED_TAG */
/* Default values for driver parameters */
#define DEF_NUM_HOST 1
#define DEF_NUM_TGTS 1
#define DEF_MAX_LUNS 1
/* With these defaults, this driver will make 1 host with 1 target
* (id 0) containing 1 logical unit (lun 0). That is 1 device.
*/
#define DEF_ATO 1
#define DEF_DELAY 1
#define DEF_DEV_SIZE_MB 8
#define DEF_DIF 0
#define DEF_DIX 0
#define DEF_D_SENSE 0
#define DEF_EVERY_NTH 0
#define DEF_FAKE_RW 0
#define DEF_GUARD 0
#define DEF_LBPU 0
#define DEF_LBPWS 0
#define DEF_LBPWS10 0
#define DEF_LBPRZ 1
#define DEF_LOWEST_ALIGNED 0
#define DEF_NO_LUN_0 0
#define DEF_NUM_PARTS 0
#define DEF_OPTS 0
#define DEF_OPT_BLKS 64
#define DEF_PHYSBLK_EXP 0
#define DEF_PTYPE 0
#define DEF_SCSI_LEVEL 5 /* INQUIRY, byte2 [5->SPC-3] */
#define DEF_SECTOR_SIZE 512
#define DEF_UNMAP_ALIGNMENT 0
#define DEF_UNMAP_GRANULARITY 1
#define DEF_UNMAP_MAX_BLOCKS 0xFFFFFFFF
#define DEF_UNMAP_MAX_DESC 256
#define DEF_VIRTUAL_GB 0
#define DEF_VPD_USE_HOSTNO 1
#define DEF_WRITESAME_LENGTH 0xFFFF
/* bit mask values for scsi_debug_opts */
#define SCSI_DEBUG_OPT_NOISE 1
#define SCSI_DEBUG_OPT_MEDIUM_ERR 2
#define SCSI_DEBUG_OPT_TIMEOUT 4
#define SCSI_DEBUG_OPT_RECOVERED_ERR 8
#define SCSI_DEBUG_OPT_TRANSPORT_ERR 16
#define SCSI_DEBUG_OPT_DIF_ERR 32
#define SCSI_DEBUG_OPT_DIX_ERR 64
#define SCSI_DEBUG_OPT_MAC_TIMEOUT 128
/* When "every_nth" > 0 then modulo "every_nth" commands:
* - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set
* - a RECOVERED_ERROR is simulated on successful read and write
* commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set.
* - a TRANSPORT_ERROR is simulated on successful read and write
* commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set.
*
* When "every_nth" < 0 then after "- every_nth" commands:
* - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set
* - a RECOVERED_ERROR is simulated on successful read and write
* commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set.
* - a TRANSPORT_ERROR is simulated on successful read and write
* commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set.
* This will continue until some other action occurs (e.g. the user
* writing a new value (other than -1 or 1) to every_nth via sysfs).
*/
/* when 1==SCSI_DEBUG_OPT_MEDIUM_ERR, a medium error is simulated at this
* sector on read commands: */
#define OPT_MEDIUM_ERR_ADDR 0x1234 /* that's sector 4660 in decimal */
#define OPT_MEDIUM_ERR_NUM 10 /* number of consecutive medium errs */
/* If REPORT LUNS has luns >= 256 it can choose "flat space" (value 1)
* or "peripheral device" addressing (value 0) */
#define SAM2_LUN_ADDRESS_METHOD 0
#define SAM2_WLUN_REPORT_LUNS 0xc101
/* Can queue up to this number of commands. Typically commands that
* that have a non-zero delay are queued. */
#define SCSI_DEBUG_CANQUEUE 255
static int scsi_debug_add_host = DEF_NUM_HOST;
static int scsi_debug_ato = DEF_ATO;
static int scsi_debug_delay = DEF_DELAY;
static int scsi_debug_dev_size_mb = DEF_DEV_SIZE_MB;
static int scsi_debug_dif = DEF_DIF;
static int scsi_debug_dix = DEF_DIX;
static int scsi_debug_dsense = DEF_D_SENSE;
static int scsi_debug_every_nth = DEF_EVERY_NTH;
static int scsi_debug_fake_rw = DEF_FAKE_RW;
static int scsi_debug_guard = DEF_GUARD;
static int scsi_debug_lowest_aligned = DEF_LOWEST_ALIGNED;
static int scsi_debug_max_luns = DEF_MAX_LUNS;
static int scsi_debug_max_queue = SCSI_DEBUG_CANQUEUE;
static int scsi_debug_no_lun_0 = DEF_NO_LUN_0;
static int scsi_debug_no_uld = 0;
static int scsi_debug_num_parts = DEF_NUM_PARTS;
static int scsi_debug_num_tgts = DEF_NUM_TGTS; /* targets per host */
static int scsi_debug_opt_blks = DEF_OPT_BLKS;
static int scsi_debug_opts = DEF_OPTS;
static int scsi_debug_physblk_exp = DEF_PHYSBLK_EXP;
static int scsi_debug_ptype = DEF_PTYPE; /* SCSI peripheral type (0==disk) */
static int scsi_debug_scsi_level = DEF_SCSI_LEVEL;
static int scsi_debug_sector_size = DEF_SECTOR_SIZE;
static int scsi_debug_virtual_gb = DEF_VIRTUAL_GB;
static int scsi_debug_vpd_use_hostno = DEF_VPD_USE_HOSTNO;
static unsigned int scsi_debug_lbpu = DEF_LBPU;
static unsigned int scsi_debug_lbpws = DEF_LBPWS;
static unsigned int scsi_debug_lbpws10 = DEF_LBPWS10;
static unsigned int scsi_debug_lbprz = DEF_LBPRZ;
static unsigned int scsi_debug_unmap_alignment = DEF_UNMAP_ALIGNMENT;
static unsigned int scsi_debug_unmap_granularity = DEF_UNMAP_GRANULARITY;
static unsigned int scsi_debug_unmap_max_blocks = DEF_UNMAP_MAX_BLOCKS;
static unsigned int scsi_debug_unmap_max_desc = DEF_UNMAP_MAX_DESC;
static unsigned int scsi_debug_write_same_length = DEF_WRITESAME_LENGTH;
static int scsi_debug_cmnd_count = 0;
#define DEV_READONLY(TGT) (0)
#define DEV_REMOVEABLE(TGT) (0)
static unsigned int sdebug_store_sectors;
static sector_t sdebug_capacity; /* in sectors */
/* old BIOS stuff, kernel may get rid of them but some mode sense pages
may still need them */
static int sdebug_heads; /* heads per disk */
static int sdebug_cylinders_per; /* cylinders per surface */
static int sdebug_sectors_per; /* sectors per cylinder */
#define SDEBUG_MAX_PARTS 4
#define SDEBUG_SENSE_LEN 32
#define SCSI_DEBUG_MAX_CMD_LEN 32
static unsigned int scsi_debug_lbp(void)
{
return scsi_debug_lbpu | scsi_debug_lbpws | scsi_debug_lbpws10;
}
struct sdebug_dev_info {
struct list_head dev_list;
unsigned char sense_buff[SDEBUG_SENSE_LEN]; /* weak nexus */
unsigned int channel;
unsigned int target;
unsigned int lun;
struct sdebug_host_info *sdbg_host;
unsigned int wlun;
char reset;
char stopped;
char used;
};
struct sdebug_host_info {
struct list_head host_list;
struct Scsi_Host *shost;
struct device dev;
struct list_head dev_info_list;
};
#define to_sdebug_host(d) \
container_of(d, struct sdebug_host_info, dev)
static LIST_HEAD(sdebug_host_list);
static DEFINE_SPINLOCK(sdebug_host_list_lock);
typedef void (* done_funct_t) (struct scsi_cmnd *);
struct sdebug_queued_cmd {
int in_use;
struct timer_list cmnd_timer;
done_funct_t done_funct;
struct scsi_cmnd * a_cmnd;
int scsi_result;
};
static struct sdebug_queued_cmd queued_arr[SCSI_DEBUG_CANQUEUE];
static unsigned char * fake_storep; /* ramdisk storage */
static unsigned char *dif_storep; /* protection info */
static void *map_storep; /* provisioning map */
static unsigned long map_size;
static int num_aborts = 0;
static int num_dev_resets = 0;
static int num_bus_resets = 0;
static int num_host_resets = 0;
static int dix_writes;
static int dix_reads;
static int dif_errors;
static DEFINE_SPINLOCK(queued_arr_lock);
static DEFINE_RWLOCK(atomic_rw);
static char sdebug_proc_name[] = "scsi_debug";
static struct bus_type pseudo_lld_bus;
static inline sector_t dif_offset(sector_t sector)
{
return sector << 3;
}
static struct device_driver sdebug_driverfs_driver = {
.name = sdebug_proc_name,
.bus = &pseudo_lld_bus,
};
static const int check_condition_result =
(DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
static const int illegal_condition_result =
(DRIVER_SENSE << 24) | (DID_ABORT << 16) | SAM_STAT_CHECK_CONDITION;
static unsigned char ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0,
0, 0, 0x2, 0x4b};
static unsigned char iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0,
0, 0, 0x0, 0x0};
static int sdebug_add_adapter(void);
static void sdebug_remove_adapter(void);
static void sdebug_max_tgts_luns(void)
{
struct sdebug_host_info *sdbg_host;
struct Scsi_Host *hpnt;
spin_lock(&sdebug_host_list_lock);
list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) {
hpnt = sdbg_host->shost;
if ((hpnt->this_id >= 0) &&
(scsi_debug_num_tgts > hpnt->this_id))
hpnt->max_id = scsi_debug_num_tgts + 1;
else
hpnt->max_id = scsi_debug_num_tgts;
/* scsi_debug_max_luns; */
hpnt->max_lun = SAM2_WLUN_REPORT_LUNS;
}
spin_unlock(&sdebug_host_list_lock);
}
static void mk_sense_buffer(struct sdebug_dev_info *devip, int key,
int asc, int asq)
{
unsigned char *sbuff;
sbuff = devip->sense_buff;
memset(sbuff, 0, SDEBUG_SENSE_LEN);
scsi_build_sense_buffer(scsi_debug_dsense, sbuff, key, asc, asq);
if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
printk(KERN_INFO "scsi_debug: [sense_key,asc,ascq]: "
"[0x%x,0x%x,0x%x]\n", key, asc, asq);
}
static void get_data_transfer_info(unsigned char *cmd,
unsigned long long *lba, unsigned int *num,
u32 *ei_lba)
{
*ei_lba = 0;
switch (*cmd) {
case VARIABLE_LENGTH_CMD:
*lba = (u64)cmd[19] | (u64)cmd[18] << 8 |
(u64)cmd[17] << 16 | (u64)cmd[16] << 24 |
(u64)cmd[15] << 32 | (u64)cmd[14] << 40 |
(u64)cmd[13] << 48 | (u64)cmd[12] << 56;
*ei_lba = (u32)cmd[23] | (u32)cmd[22] << 8 |
(u32)cmd[21] << 16 | (u32)cmd[20] << 24;
*num = (u32)cmd[31] | (u32)cmd[30] << 8 | (u32)cmd[29] << 16 |
(u32)cmd[28] << 24;
break;
case WRITE_SAME_16:
case WRITE_16:
case READ_16:
*lba = (u64)cmd[9] | (u64)cmd[8] << 8 |
(u64)cmd[7] << 16 | (u64)cmd[6] << 24 |
(u64)cmd[5] << 32 | (u64)cmd[4] << 40 |
(u64)cmd[3] << 48 | (u64)cmd[2] << 56;
*num = (u32)cmd[13] | (u32)cmd[12] << 8 | (u32)cmd[11] << 16 |
(u32)cmd[10] << 24;
break;
case WRITE_12:
case READ_12:
*lba = (u32)cmd[5] | (u32)cmd[4] << 8 | (u32)cmd[3] << 16 |
(u32)cmd[2] << 24;
*num = (u32)cmd[9] | (u32)cmd[8] << 8 | (u32)cmd[7] << 16 |
(u32)cmd[6] << 24;
break;
case WRITE_SAME:
case WRITE_10:
case READ_10:
case XDWRITEREAD_10:
*lba = (u32)cmd[5] | (u32)cmd[4] << 8 | (u32)cmd[3] << 16 |
(u32)cmd[2] << 24;
*num = (u32)cmd[8] | (u32)cmd[7] << 8;
break;
case WRITE_6:
case READ_6:
*lba = (u32)cmd[3] | (u32)cmd[2] << 8 |
(u32)(cmd[1] & 0x1f) << 16;
*num = (0 == cmd[4]) ? 256 : cmd[4];
break;
default:
break;
}
}
static int scsi_debug_ioctl(struct scsi_device *dev, int cmd, void __user *arg)
{
if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) {
printk(KERN_INFO "scsi_debug: ioctl: cmd=0x%x\n", cmd);
}
return -EINVAL;
/* return -ENOTTY; // correct return but upsets fdisk */
}
static int check_readiness(struct scsi_cmnd * SCpnt, int reset_only,
struct sdebug_dev_info * devip)
{
if (devip->reset) {
if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
printk(KERN_INFO "scsi_debug: Reporting Unit "
"attention: power on reset\n");
devip->reset = 0;
mk_sense_buffer(devip, UNIT_ATTENTION, POWERON_RESET, 0);
return check_condition_result;
}
if ((0 == reset_only) && devip->stopped) {
if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
printk(KERN_INFO "scsi_debug: Reporting Not "
"ready: initializing command required\n");
mk_sense_buffer(devip, NOT_READY, LOGICAL_UNIT_NOT_READY,
0x2);
return check_condition_result;
}
return 0;
}
/* Returns 0 if ok else (DID_ERROR << 16). Sets scp->resid . */
static int fill_from_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr,
int arr_len)
{
int act_len;
struct scsi_data_buffer *sdb = scsi_in(scp);
if (!sdb->length)
return 0;
if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_FROM_DEVICE))
return (DID_ERROR << 16);
act_len = sg_copy_from_buffer(sdb->table.sgl, sdb->table.nents,
arr, arr_len);
if (sdb->resid)
sdb->resid -= act_len;
else
sdb->resid = scsi_bufflen(scp) - act_len;
return 0;
}
/* Returns number of bytes fetched into 'arr' or -1 if error. */
static int fetch_to_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr,
int arr_len)
{
if (!scsi_bufflen(scp))
return 0;
if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_TO_DEVICE))
return -1;
return scsi_sg_copy_to_buffer(scp, arr, arr_len);
}
static const char * inq_vendor_id = "Linux ";
static const char * inq_product_id = "scsi_debug ";
static const char * inq_product_rev = "0004";
static int inquiry_evpd_83(unsigned char * arr, int port_group_id,
int target_dev_id, int dev_id_num,
const char * dev_id_str,
int dev_id_str_len)
{
int num, port_a;
char b[32];
port_a = target_dev_id + 1;
/* T10 vendor identifier field format (faked) */
arr[0] = 0x2; /* ASCII */
arr[1] = 0x1;
arr[2] = 0x0;
memcpy(&arr[4], inq_vendor_id, 8);
memcpy(&arr[12], inq_product_id, 16);
memcpy(&arr[28], dev_id_str, dev_id_str_len);
num = 8 + 16 + dev_id_str_len;
arr[3] = num;
num += 4;
if (dev_id_num >= 0) {
/* NAA-5, Logical unit identifier (binary) */
arr[num++] = 0x1; /* binary (not necessarily sas) */
arr[num++] = 0x3; /* PIV=0, lu, naa */
arr[num++] = 0x0;
arr[num++] = 0x8;
arr[num++] = 0x53; /* naa-5 ieee company id=0x333333 (fake) */
arr[num++] = 0x33;
arr[num++] = 0x33;
arr[num++] = 0x30;
arr[num++] = (dev_id_num >> 24);
arr[num++] = (dev_id_num >> 16) & 0xff;
arr[num++] = (dev_id_num >> 8) & 0xff;
arr[num++] = dev_id_num & 0xff;
/* Target relative port number */
arr[num++] = 0x61; /* proto=sas, binary */
arr[num++] = 0x94; /* PIV=1, target port, rel port */
arr[num++] = 0x0; /* reserved */
arr[num++] = 0x4; /* length */
arr[num++] = 0x0; /* reserved */
arr[num++] = 0x0; /* reserved */
arr[num++] = 0x0;
arr[num++] = 0x1; /* relative port A */
}
/* NAA-5, Target port identifier */
arr[num++] = 0x61; /* proto=sas, binary */
arr[num++] = 0x93; /* piv=1, target port, naa */
arr[num++] = 0x0;
arr[num++] = 0x8;
arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */
arr[num++] = 0x22;
arr[num++] = 0x22;
arr[num++] = 0x20;
arr[num++] = (port_a >> 24);
arr[num++] = (port_a >> 16) & 0xff;
arr[num++] = (port_a >> 8) & 0xff;
arr[num++] = port_a & 0xff;
/* NAA-5, Target port group identifier */
arr[num++] = 0x61; /* proto=sas, binary */
arr[num++] = 0x95; /* piv=1, target port group id */
arr[num++] = 0x0;
arr[num++] = 0x4;
arr[num++] = 0;
arr[num++] = 0;
arr[num++] = (port_group_id >> 8) & 0xff;
arr[num++] = port_group_id & 0xff;
/* NAA-5, Target device identifier */
arr[num++] = 0x61; /* proto=sas, binary */
arr[num++] = 0xa3; /* piv=1, target device, naa */
arr[num++] = 0x0;
arr[num++] = 0x8;
arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */
arr[num++] = 0x22;
arr[num++] = 0x22;
arr[num++] = 0x20;
arr[num++] = (target_dev_id >> 24);
arr[num++] = (target_dev_id >> 16) & 0xff;
arr[num++] = (target_dev_id >> 8) & 0xff;
arr[num++] = target_dev_id & 0xff;
/* SCSI name string: Target device identifier */
arr[num++] = 0x63; /* proto=sas, UTF-8 */
arr[num++] = 0xa8; /* piv=1, target device, SCSI name string */
arr[num++] = 0x0;
arr[num++] = 24;
memcpy(arr + num, "naa.52222220", 12);
num += 12;
snprintf(b, sizeof(b), "%08X", target_dev_id);
memcpy(arr + num, b, 8);
num += 8;
memset(arr + num, 0, 4);
num += 4;
return num;
}
static unsigned char vpd84_data[] = {
/* from 4th byte */ 0x22,0x22,0x22,0x0,0xbb,0x0,
0x22,0x22,0x22,0x0,0xbb,0x1,
0x22,0x22,0x22,0x0,0xbb,0x2,
};
static int inquiry_evpd_84(unsigned char * arr)
{
memcpy(arr, vpd84_data, sizeof(vpd84_data));
return sizeof(vpd84_data);
}
static int inquiry_evpd_85(unsigned char * arr)
{
int num = 0;
const char * na1 = "https://www.kernel.org/config";
const char * na2 = "http://www.kernel.org/log";
int plen, olen;
arr[num++] = 0x1; /* lu, storage config */
arr[num++] = 0x0; /* reserved */
arr[num++] = 0x0;
olen = strlen(na1);
plen = olen + 1;
if (plen % 4)
plen = ((plen / 4) + 1) * 4;
arr[num++] = plen; /* length, null termianted, padded */
memcpy(arr + num, na1, olen);
memset(arr + num + olen, 0, plen - olen);
num += plen;
arr[num++] = 0x4; /* lu, logging */
arr[num++] = 0x0; /* reserved */
arr[num++] = 0x0;
olen = strlen(na2);
plen = olen + 1;
if (plen % 4)
plen = ((plen / 4) + 1) * 4;
arr[num++] = plen; /* length, null terminated, padded */
memcpy(arr + num, na2, olen);
memset(arr + num + olen, 0, plen - olen);
num += plen;
return num;
}
/* SCSI ports VPD page */
static int inquiry_evpd_88(unsigned char * arr, int target_dev_id)
{
int num = 0;
int port_a, port_b;
port_a = target_dev_id + 1;
port_b = port_a + 1;
arr[num++] = 0x0; /* reserved */
arr[num++] = 0x0; /* reserved */
arr[num++] = 0x0;
arr[num++] = 0x1; /* relative port 1 (primary) */
memset(arr + num, 0, 6);
num += 6;
arr[num++] = 0x0;
arr[num++] = 12; /* length tp descriptor */
/* naa-5 target port identifier (A) */
arr[num++] = 0x61; /* proto=sas, binary */
arr[num++] = 0x93; /* PIV=1, target port, NAA */
arr[num++] = 0x0; /* reserved */
arr[num++] = 0x8; /* length */
arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */
arr[num++] = 0x22;
arr[num++] = 0x22;
arr[num++] = 0x20;
arr[num++] = (port_a >> 24);
arr[num++] = (port_a >> 16) & 0xff;
arr[num++] = (port_a >> 8) & 0xff;
arr[num++] = port_a & 0xff;
arr[num++] = 0x0; /* reserved */
arr[num++] = 0x0; /* reserved */
arr[num++] = 0x0;
arr[num++] = 0x2; /* relative port 2 (secondary) */
memset(arr + num, 0, 6);
num += 6;
arr[num++] = 0x0;
arr[num++] = 12; /* length tp descriptor */
/* naa-5 target port identifier (B) */
arr[num++] = 0x61; /* proto=sas, binary */
arr[num++] = 0x93; /* PIV=1, target port, NAA */
arr[num++] = 0x0; /* reserved */
arr[num++] = 0x8; /* length */
arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */
arr[num++] = 0x22;
arr[num++] = 0x22;
arr[num++] = 0x20;
arr[num++] = (port_b >> 24);
arr[num++] = (port_b >> 16) & 0xff;
arr[num++] = (port_b >> 8) & 0xff;
arr[num++] = port_b & 0xff;
return num;
}
static unsigned char vpd89_data[] = {
/* from 4th byte */ 0,0,0,0,
'l','i','n','u','x',' ',' ',' ',
'S','A','T',' ','s','c','s','i','_','d','e','b','u','g',' ',' ',
'1','2','3','4',
0x34,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,
0xec,0,0,0,
0x5a,0xc,0xff,0x3f,0x37,0xc8,0x10,0,0,0,0,0,0x3f,0,0,0,
0,0,0,0,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x20,0x20,0x20,0x20,
0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0,0,0,0x40,0x4,0,0x2e,0x33,
0x38,0x31,0x20,0x20,0x20,0x20,0x54,0x53,0x38,0x33,0x30,0x30,0x33,0x31,
0x53,0x41,
0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,
0x20,0x20,
0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,
0x10,0x80,
0,0,0,0x2f,0,0,0,0x2,0,0x2,0x7,0,0xff,0xff,0x1,0,
0x3f,0,0xc1,0xff,0x3e,0,0x10,0x1,0xb0,0xf8,0x50,0x9,0,0,0x7,0,
0x3,0,0x78,0,0x78,0,0xf0,0,0x78,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0x2,0,0,0,0,0,0,0,
0x7e,0,0x1b,0,0x6b,0x34,0x1,0x7d,0x3,0x40,0x69,0x34,0x1,0x3c,0x3,0x40,
0x7f,0x40,0,0,0,0,0xfe,0xfe,0,0,0,0,0,0xfe,0,0,
0,0,0,0,0,0,0,0,0xb0,0xf8,0x50,0x9,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0x1,0,0xb0,0xf8,0x50,0x9,0xb0,0xf8,0x50,0x9,0x20,0x20,0x2,0,0xb6,0x42,
0,0x80,0x8a,0,0x6,0x3c,0xa,0x3c,0xff,0xff,0xc6,0x7,0,0x1,0,0x8,
0xf0,0xf,0,0x10,0x2,0,0x30,0,0,0,0,0,0,0,0x6,0xfe,
0,0,0x2,0,0x50,0,0x8a,0,0x4f,0x95,0,0,0x21,0,0xb,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0xa5,0x51,
};
static int inquiry_evpd_89(unsigned char * arr)
{
memcpy(arr, vpd89_data, sizeof(vpd89_data));
return sizeof(vpd89_data);
}
/* Block limits VPD page (SBC-3) */
static unsigned char vpdb0_data[] = {
/* from 4th byte */ 0,0,0,4, 0,0,0x4,0, 0,0,0,64,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
};
static int inquiry_evpd_b0(unsigned char * arr)
{
unsigned int gran;
memcpy(arr, vpdb0_data, sizeof(vpdb0_data));
/* Optimal transfer length granularity */
gran = 1 << scsi_debug_physblk_exp;
arr[2] = (gran >> 8) & 0xff;
arr[3] = gran & 0xff;
/* Maximum Transfer Length */
if (sdebug_store_sectors > 0x400) {
arr[4] = (sdebug_store_sectors >> 24) & 0xff;
arr[5] = (sdebug_store_sectors >> 16) & 0xff;
arr[6] = (sdebug_store_sectors >> 8) & 0xff;
arr[7] = sdebug_store_sectors & 0xff;
}
/* Optimal Transfer Length */
put_unaligned_be32(scsi_debug_opt_blks, &arr[8]);
if (scsi_debug_lbpu) {
/* Maximum Unmap LBA Count */
put_unaligned_be32(scsi_debug_unmap_max_blocks, &arr[16]);
/* Maximum Unmap Block Descriptor Count */
put_unaligned_be32(scsi_debug_unmap_max_desc, &arr[20]);
}
/* Unmap Granularity Alignment */
if (scsi_debug_unmap_alignment) {
put_unaligned_be32(scsi_debug_unmap_alignment, &arr[28]);
arr[28] |= 0x80; /* UGAVALID */
}
/* Optimal Unmap Granularity */
put_unaligned_be32(scsi_debug_unmap_granularity, &arr[24]);
/* Maximum WRITE SAME Length */
put_unaligned_be64(scsi_debug_write_same_length, &arr[32]);
return 0x3c; /* Mandatory page length for Logical Block Provisioning */
return sizeof(vpdb0_data);
}
/* Block device characteristics VPD page (SBC-3) */
static int inquiry_evpd_b1(unsigned char *arr)
{
memset(arr, 0, 0x3c);
arr[0] = 0;
arr[1] = 1; /* non rotating medium (e.g. solid state) */
arr[2] = 0;
arr[3] = 5; /* less than 1.8" */
return 0x3c;
}
/* Logical block provisioning VPD page (SBC-3) */
static int inquiry_evpd_b2(unsigned char *arr)
{
memset(arr, 0, 0x4);
arr[0] = 0; /* threshold exponent */
if (scsi_debug_lbpu)
arr[1] = 1 << 7;
if (scsi_debug_lbpws)
arr[1] |= 1 << 6;
if (scsi_debug_lbpws10)
arr[1] |= 1 << 5;
if (scsi_debug_lbprz)
arr[1] |= 1 << 2;
return 0x4;
}
#define SDEBUG_LONG_INQ_SZ 96
#define SDEBUG_MAX_INQ_ARR_SZ 584
static int resp_inquiry(struct scsi_cmnd * scp, int target,
struct sdebug_dev_info * devip)
{
unsigned char pq_pdt;
unsigned char * arr;
unsigned char *cmd = (unsigned char *)scp->cmnd;
int alloc_len, n, ret;
alloc_len = (cmd[3] << 8) + cmd[4];
arr = kzalloc(SDEBUG_MAX_INQ_ARR_SZ, GFP_ATOMIC);
if (! arr)
return DID_REQUEUE << 16;
if (devip->wlun)
pq_pdt = 0x1e; /* present, wlun */
else if (scsi_debug_no_lun_0 && (0 == devip->lun))
pq_pdt = 0x7f; /* not present, no device type */
else
pq_pdt = (scsi_debug_ptype & 0x1f);
arr[0] = pq_pdt;
if (0x2 & cmd[1]) { /* CMDDT bit set */
mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB,
0);
kfree(arr);
return check_condition_result;
} else if (0x1 & cmd[1]) { /* EVPD bit set */
int lu_id_num, port_group_id, target_dev_id, len;
char lu_id_str[6];
int host_no = devip->sdbg_host->shost->host_no;
port_group_id = (((host_no + 1) & 0x7f) << 8) +
(devip->channel & 0x7f);
if (0 == scsi_debug_vpd_use_hostno)
host_no = 0;
lu_id_num = devip->wlun ? -1 : (((host_no + 1) * 2000) +
(devip->target * 1000) + devip->lun);
target_dev_id = ((host_no + 1) * 2000) +
(devip->target * 1000) - 3;
len = scnprintf(lu_id_str, 6, "%d", lu_id_num);
if (0 == cmd[2]) { /* supported vital product data pages */
arr[1] = cmd[2]; /*sanity */
n = 4;
arr[n++] = 0x0; /* this page */
arr[n++] = 0x80; /* unit serial number */
arr[n++] = 0x83; /* device identification */
arr[n++] = 0x84; /* software interface ident. */
arr[n++] = 0x85; /* management network addresses */
arr[n++] = 0x86; /* extended inquiry */
arr[n++] = 0x87; /* mode page policy */
arr[n++] = 0x88; /* SCSI ports */
arr[n++] = 0x89; /* ATA information */
arr[n++] = 0xb0; /* Block limits (SBC) */
arr[n++] = 0xb1; /* Block characteristics (SBC) */
if (scsi_debug_lbp()) /* Logical Block Prov. (SBC) */
arr[n++] = 0xb2;
arr[3] = n - 4; /* number of supported VPD pages */
} else if (0x80 == cmd[2]) { /* unit serial number */
arr[1] = cmd[2]; /*sanity */
arr[3] = len;
memcpy(&arr[4], lu_id_str, len);
} else if (0x83 == cmd[2]) { /* device identification */
arr[1] = cmd[2]; /*sanity */
arr[3] = inquiry_evpd_83(&arr[4], port_group_id,
target_dev_id, lu_id_num,
lu_id_str, len);
} else if (0x84 == cmd[2]) { /* Software interface ident. */
arr[1] = cmd[2]; /*sanity */
arr[3] = inquiry_evpd_84(&arr[4]);
} else if (0x85 == cmd[2]) { /* Management network addresses */
arr[1] = cmd[2]; /*sanity */
arr[3] = inquiry_evpd_85(&arr[4]);
} else if (0x86 == cmd[2]) { /* extended inquiry */
arr[1] = cmd[2]; /*sanity */
arr[3] = 0x3c; /* number of following entries */
if (scsi_debug_dif == SD_DIF_TYPE3_PROTECTION)
arr[4] = 0x4; /* SPT: GRD_CHK:1 */
else if (scsi_debug_dif)
arr[4] = 0x5; /* SPT: GRD_CHK:1, REF_CHK:1 */
else
arr[4] = 0x0; /* no protection stuff */
arr[5] = 0x7; /* head of q, ordered + simple q's */
} else if (0x87 == cmd[2]) { /* mode page policy */
arr[1] = cmd[2]; /*sanity */
arr[3] = 0x8; /* number of following entries */
arr[4] = 0x2; /* disconnect-reconnect mp */
arr[6] = 0x80; /* mlus, shared */
arr[8] = 0x18; /* protocol specific lu */
arr[10] = 0x82; /* mlus, per initiator port */
} else if (0x88 == cmd[2]) { /* SCSI Ports */
arr[1] = cmd[2]; /*sanity */
arr[3] = inquiry_evpd_88(&arr[4], target_dev_id);
} else if (0x89 == cmd[2]) { /* ATA information */
arr[1] = cmd[2]; /*sanity */
n = inquiry_evpd_89(&arr[4]);
arr[2] = (n >> 8);
arr[3] = (n & 0xff);
} else if (0xb0 == cmd[2]) { /* Block limits (SBC) */
arr[1] = cmd[2]; /*sanity */
arr[3] = inquiry_evpd_b0(&arr[4]);
} else if (0xb1 == cmd[2]) { /* Block characteristics (SBC) */
arr[1] = cmd[2]; /*sanity */
arr[3] = inquiry_evpd_b1(&arr[4]);
} else if (0xb2 == cmd[2]) { /* Logical Block Prov. (SBC) */
arr[1] = cmd[2]; /*sanity */
arr[3] = inquiry_evpd_b2(&arr[4]);
} else {
/* Illegal request, invalid field in cdb */
mk_sense_buffer(devip, ILLEGAL_REQUEST,
INVALID_FIELD_IN_CDB, 0);
kfree(arr);
return check_condition_result;
}
len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len);
ret = fill_from_dev_buffer(scp, arr,
min(len, SDEBUG_MAX_INQ_ARR_SZ));
kfree(arr);
return ret;
}
/* drops through here for a standard inquiry */
arr[1] = DEV_REMOVEABLE(target) ? 0x80 : 0; /* Removable disk */
arr[2] = scsi_debug_scsi_level;
arr[3] = 2; /* response_data_format==2 */
arr[4] = SDEBUG_LONG_INQ_SZ - 5;
arr[5] = scsi_debug_dif ? 1 : 0; /* PROTECT bit */
if (0 == scsi_debug_vpd_use_hostno)
arr[5] = 0x10; /* claim: implicit TGPS */
arr[6] = 0x10; /* claim: MultiP */
/* arr[6] |= 0x40; ... claim: EncServ (enclosure services) */
arr[7] = 0xa; /* claim: LINKED + CMDQUE */
memcpy(&arr[8], inq_vendor_id, 8);
memcpy(&arr[16], inq_product_id, 16);
memcpy(&arr[32], inq_product_rev, 4);
/* version descriptors (2 bytes each) follow */
arr[58] = 0x0; arr[59] = 0x77; /* SAM-3 ANSI */
arr[60] = 0x3; arr[61] = 0x14; /* SPC-3 ANSI */
n = 62;
if (scsi_debug_ptype == 0) {
arr[n++] = 0x3; arr[n++] = 0x3d; /* SBC-2 ANSI */
} else if (scsi_debug_ptype == 1) {
arr[n++] = 0x3; arr[n++] = 0x60; /* SSC-2 no version */
}
arr[n++] = 0xc; arr[n++] = 0xf; /* SAS-1.1 rev 10 */
ret = fill_from_dev_buffer(scp, arr,
min(alloc_len, SDEBUG_LONG_INQ_SZ));
kfree(arr);
return ret;
}
static int resp_requests(struct scsi_cmnd * scp,
struct sdebug_dev_info * devip)
{
unsigned char * sbuff;
unsigned char *cmd = (unsigned char *)scp->cmnd;
unsigned char arr[SDEBUG_SENSE_LEN];
int want_dsense;
int len = 18;
memset(arr, 0, sizeof(arr));
if (devip->reset == 1)
mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0);
want_dsense = !!(cmd[1] & 1) || scsi_debug_dsense;
sbuff = devip->sense_buff;
if ((iec_m_pg[2] & 0x4) && (6 == (iec_m_pg[3] & 0xf))) {
if (want_dsense) {
arr[0] = 0x72;
arr[1] = 0x0; /* NO_SENSE in sense_key */
arr[2] = THRESHOLD_EXCEEDED;
arr[3] = 0xff; /* TEST set and MRIE==6 */
} else {
arr[0] = 0x70;
arr[2] = 0x0; /* NO_SENSE in sense_key */
arr[7] = 0xa; /* 18 byte sense buffer */
arr[12] = THRESHOLD_EXCEEDED;
arr[13] = 0xff; /* TEST set and MRIE==6 */
}
} else {
memcpy(arr, sbuff, SDEBUG_SENSE_LEN);
if ((cmd[1] & 1) && (! scsi_debug_dsense)) {
/* DESC bit set and sense_buff in fixed format */
memset(arr, 0, sizeof(arr));
arr[0] = 0x72;
arr[1] = sbuff[2]; /* sense key */
arr[2] = sbuff[12]; /* asc */
arr[3] = sbuff[13]; /* ascq */
len = 8;
}
}
mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0);
return fill_from_dev_buffer(scp, arr, len);
}
static int resp_start_stop(struct scsi_cmnd * scp,
struct sdebug_dev_info * devip)
{
unsigned char *cmd = (unsigned char *)scp->cmnd;
int power_cond, errsts, start;
if ((errsts = check_readiness(scp, 1, devip)))