/* Additional Sense Code Qualifier (ASCQ) */
#define ACK_NAK_TO 0x3
-
/* Default values for driver parameters */
#define DEF_NUM_HOST 1
#define DEF_NUM_TGTS 1
SDEBUG_OPT_DIF_ERR | SDEBUG_OPT_DIX_ERR | \
SDEBUG_OPT_SHORT_TRANSFER)
/* When "every_nth" > 0 then modulo "every_nth" commands:
- * - a no response is simulated if SDEBUG_OPT_TIMEOUT is set
+ * - a missing response is simulated if SDEBUG_OPT_TIMEOUT is set
* - a RECOVERED_ERROR is simulated on successful read and write
* commands if SDEBUG_OPT_RECOVERED_ERR is set.
* - a TRANSPORT_ERROR is simulated on successful read and write
* commands if SDEBUG_OPT_TRANSPORT_ERR is set.
*
* When "every_nth" < 0 then after "- every_nth" commands:
- * - a no response is simulated if SDEBUG_OPT_TIMEOUT is set
+ * - a missing response is simulated if SDEBUG_OPT_TIMEOUT is set
* - a RECOVERED_ERROR is simulated on successful read and write
* commands if SDEBUG_OPT_RECOVERED_ERR is set.
* - a TRANSPORT_ERROR is simulated on successful read and write
* every_nth via sysfs).
*/
-/* As indicated in SAM-5 and SPC-4 Unit Attentions (UAs)are returned in
+/* As indicated in SAM-5 and SPC-4 Unit Attentions (UAs) are returned in
* priority order. In the subset implemented here lower numbers have higher
* priority. The UA numbers should be a sequence starting from 0 with
* SDEBUG_NUM_UAS being 1 higher than the highest numbered UA. */
#warning "Expect DEF_CMD_PER_LUN <= SCSI_DEBUG_CANQUEUE"
#endif
-/* SCSI opcodes (first byte of cdb) mapped onto these indexes */
+#define F_D_IN 1
+#define F_D_OUT 2
+#define F_D_OUT_MAYBE 4 /* WRITE SAME, NDOB bit */
+#define F_D_UNKN 8
+#define F_RL_WLUN_OK 0x10
+#define F_SKIP_UA 0x20
+#define F_DELAY_OVERR 0x40
+#define F_SA_LOW 0x80 /* cdb byte 1, bits 4 to 0 */
+#define F_SA_HIGH 0x100 /* as used by variable length cdbs */
+#define F_INV_OP 0x200
+#define F_FAKE_RW 0x400
+#define F_M_ACCESS 0x800 /* media access */
+
+#define FF_RESPOND (F_RL_WLUN_OK | F_SKIP_UA | F_DELAY_OVERR)
+#define FF_DIRECT_IO (F_M_ACCESS | F_FAKE_RW)
+#define FF_SA (F_SA_HIGH | F_SA_LOW)
+
+#define SDEBUG_MAX_PARTS 4
+
+#define SCSI_DEBUG_MAX_CMD_LEN 32
+
+
+struct sdebug_dev_info {
+ struct list_head dev_list;
+ unsigned int channel;
+ unsigned int target;
+ u64 lun;
+ struct sdebug_host_info *sdbg_host;
+ unsigned long uas_bm[1];
+ atomic_t num_in_q;
+ char stopped; /* TODO: should be atomic */
+ bool 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)
+
+struct sdebug_defer {
+ struct hrtimer hrt;
+ struct execute_work ew;
+ int qa_indx;
+};
+
+struct sdebug_queued_cmd {
+ /* in_use flagged by a bit in queued_in_use_bm[] */
+ struct sdebug_defer *sd_dp;
+ struct scsi_cmnd *a_cmnd;
+};
+
+struct sdebug_scmd_extra_t {
+ bool inj_recovered;
+ bool inj_transport;
+ bool inj_dif;
+ bool inj_dix;
+ bool inj_short;
+};
+
+struct opcode_info_t {
+ u8 num_attached; /* 0 if this is it (i.e. a leaf); use 0xff
+ * for terminating element */
+ u8 opcode; /* if num_attached > 0, preferred */
+ u16 sa; /* service action */
+ u32 flags; /* OR-ed set of SDEB_F_* */
+ int (*pfp)(struct scsi_cmnd *, struct sdebug_dev_info *);
+ const struct opcode_info_t *arrp; /* num_attached elements or NULL */
+ u8 len_mask[16]; /* len=len_mask[0], then mask for cdb[1]... */
+ /* ignore cdb bytes after position 15 */
+};
+
+/* SCSI opcodes (first byte of cdb) of interest mapped onto these indexes */
enum sdeb_opcode_index {
SDEB_I_INVALID_OPCODE = 0,
SDEB_I_INQUIRY = 1,
0, 0, 0, SDEB_I_XDWRITEREAD, 0, SDEB_I_MODE_SELECT, SDEB_I_RESERVE,
SDEB_I_RELEASE,
0, 0, SDEB_I_MODE_SENSE, 0, 0, 0, 0, 0,
-/* 0x60; 0x60->0x7d are reserved */
+/* 0x60; 0x60->0x7d are reserved, 0x7e is "extended cdb" */
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, SDEB_I_VARIABLE_LEN,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
};
-#define F_D_IN 1
-#define F_D_OUT 2
-#define F_D_OUT_MAYBE 4 /* WRITE SAME, NDOB bit */
-#define F_D_UNKN 8
-#define F_RL_WLUN_OK 0x10
-#define F_SKIP_UA 0x20
-#define F_DELAY_OVERR 0x40
-#define F_SA_LOW 0x80 /* cdb byte 1, bits 4 to 0 */
-#define F_SA_HIGH 0x100 /* as used by variable length cdbs */
-#define F_INV_OP 0x200
-#define F_FAKE_RW 0x400
-#define F_M_ACCESS 0x800 /* media access */
-
-#define FF_RESPOND (F_RL_WLUN_OK | F_SKIP_UA | F_DELAY_OVERR)
-#define FF_DIRECT_IO (F_M_ACCESS | F_FAKE_RW)
-#define FF_SA (F_SA_HIGH | F_SA_LOW)
-
-struct sdebug_dev_info;
static int resp_inquiry(struct scsi_cmnd *, struct sdebug_dev_info *);
static int resp_report_luns(struct scsi_cmnd *, struct sdebug_dev_info *);
static int resp_requests(struct scsi_cmnd *, struct sdebug_dev_info *);
static int resp_comp_write(struct scsi_cmnd *, struct sdebug_dev_info *);
static int resp_write_buffer(struct scsi_cmnd *, struct sdebug_dev_info *);
-struct opcode_info_t {
- u8 num_attached; /* 0 if this is it (i.e. a leaf); use 0xff
- * for terminating element */
- u8 opcode; /* if num_attached > 0, preferred */
- u16 sa; /* service action */
- u32 flags; /* OR-ed set of SDEB_F_* */
- int (*pfp)(struct scsi_cmnd *, struct sdebug_dev_info *);
- const struct opcode_info_t *arrp; /* num_attached elements or NULL */
- u8 len_mask[16]; /* len=len_mask[0], then mask for cdb[1]... */
- /* ignore cdb bytes after position 15 */
-};
-
static const struct opcode_info_t msense_iarr[1] = {
{0, 0x1a, 0, F_D_IN, NULL, NULL,
{6, 0xe8, 0xff, 0xff, 0xff, 0xc7, 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} },
};
-struct sdebug_scmd_extra_t {
- bool inj_recovered;
- bool inj_transport;
- bool inj_dif;
- bool inj_dix;
- bool inj_short;
-};
-
static int sdebug_add_host = DEF_NUM_HOST;
static int sdebug_ato = DEF_ATO;
static int sdebug_jdelay = DEF_JDELAY; /* if > 0 then unit is jiffies */
static atomic_t sdebug_completions;
static atomic_t sdebug_a_tsf; /* counter of 'almost' TSFs */
-#define DEV_READONLY(TGT) (0)
-
static unsigned int sdebug_store_sectors;
static sector_t sdebug_capacity; /* in sectors */
static int sdebug_cylinders_per; /* cylinders per surface */
static int sdebug_sectors_per; /* sectors per cylinder */
-#define SDEBUG_MAX_PARTS 4
-
-#define SCSI_DEBUG_MAX_CMD_LEN 32
-
-static unsigned int scsi_debug_lbp(void)
-{
- return 0 == sdebug_fake_rw &&
- (sdebug_lbpu || sdebug_lbpws || sdebug_lbpws10);
-}
-
-struct sdebug_dev_info {
- struct list_head dev_list;
- unsigned int channel;
- unsigned int target;
- u64 lun;
- struct sdebug_host_info *sdbg_host;
- unsigned long uas_bm[1];
- atomic_t num_in_q;
- char stopped; /* TODO: should be atomic */
- bool 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);
-
-struct sdebug_defer {
- struct hrtimer hrt;
- struct execute_work ew;
- int qa_indx;
-};
-
-struct sdebug_queued_cmd {
- /* in_use flagged by a bit in queued_in_use_bm[] */
- struct sdebug_defer *sd_dp;
- struct scsi_cmnd * a_cmnd;
-};
-static struct sdebug_queued_cmd queued_arr[SCSI_DEBUG_CANQUEUE];
-static unsigned long queued_in_use_bm[SCSI_DEBUG_CANQUEUE_WORDS];
-
-
-static unsigned char * fake_storep; /* ramdisk storage */
+static unsigned char *fake_storep; /* ramdisk storage */
static struct sd_dif_tuple *dif_storep; /* protection info */
static void *map_storep; /* provisioning map */
static int dix_reads;
static int dif_errors;
+static struct sdebug_queued_cmd queued_arr[SCSI_DEBUG_CANQUEUE];
+static unsigned long queued_in_use_bm[SCSI_DEBUG_CANQUEUE_WORDS];
+
static DEFINE_SPINLOCK(queued_arr_lock);
static DEFINE_RWLOCK(atomic_rw);
static const int device_qfull_result =
(DID_OK << 16) | (COMMAND_COMPLETE << 8) | SAM_STAT_TASK_SET_FULL;
-static unsigned char caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0,
- 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0,
- 0, 0, 0, 0};
-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 unsigned int scsi_debug_lbp(void)
+{
+ return 0 == sdebug_fake_rw &&
+ (sdebug_lbpu || sdebug_lbpws || sdebug_lbpws10);
+}
static void *fake_store(unsigned long long lba)
{
return dif_storep + sector;
}
-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;
enum sdeb_cmd_data {SDEB_IN_DATA = 0, SDEB_IN_CDB = 1};
/* Set in_bit to -1 to indicate no bit position of invalid field */
-static void
-mk_sense_invalid_fld(struct scsi_cmnd *scp, enum sdeb_cmd_data c_d,
- int in_byte, int in_bit)
+static void mk_sense_invalid_fld(struct scsi_cmnd *scp,
+ enum sdeb_cmd_data c_d,
+ int in_byte, int in_bit)
{
unsigned char *sbuff;
u8 sks[4];
my_name, key, asc, asq);
}
-static void
-mk_sense_invalid_opcode(struct scsi_cmnd *scp)
+static void mk_sense_invalid_opcode(struct scsi_cmnd *scp)
{
mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_OPCODE, 0);
}
return ret;
}
+static unsigned char iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0,
+ 0, 0, 0x0, 0x0};
+
static int resp_requests(struct scsi_cmnd * scp,
struct sdebug_dev_info * devip)
{
return ret;
}
-static int
-resp_rsup_opcodes(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
+static int resp_rsup_opcodes(struct scsi_cmnd *scp,
+ struct sdebug_dev_info *devip)
{
bool rctd;
u8 reporting_opts, req_opcode, sdeb_i, supp;
return errsts;
}
-static int
-resp_rsup_tmfs(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
+static int resp_rsup_tmfs(struct scsi_cmnd *scp,
+ struct sdebug_dev_info *devip)
{
bool repd;
u32 alloc_len, len;
return sizeof(format_pg);
}
+static unsigned char caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0,
+ 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0,
+ 0, 0, 0, 0};
+
static int resp_caching_pg(unsigned char * p, int pcontrol, int target)
{ /* Caching page for mode_sense */
unsigned char ch_caching_pg[] = {/* 0x8, 18, */ 0x4, 0, 0, 0, 0, 0,
return sizeof(caching_pg);
}
+static unsigned char ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0,
+ 0, 0, 0x2, 0x4b};
+
static int resp_ctrl_m_pg(unsigned char * p, int pcontrol, int target)
{ /* Control mode page for mode_sense */
unsigned char ch_ctrl_m_pg[] = {/* 0xa, 10, */ 0x6, 0, 0, 0, 0, 0,
#define SDEBUG_MAX_MSENSE_SZ 256
-static int
-resp_mode_sense(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
+static int resp_mode_sense(struct scsi_cmnd *scp,
+ struct sdebug_dev_info *devip)
{
unsigned char dbd, llbaa;
int pcontrol, pcode, subpcode, bd_len;
(devip->target * 1000) - 3;
/* set DPOFUA bit for disks */
if (0 == sdebug_ptype)
- dev_spec = (DEV_READONLY(target) ? 0x80 : 0x0) | 0x10;
+ dev_spec = 0x10; /* would be 0x90 if read-only */
else
dev_spec = 0x0;
if (msense_6) {
#define SDEBUG_MAX_MSELECT_SZ 512
-static int
-resp_mode_select(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
+static int resp_mode_select(struct scsi_cmnd *scp,
+ struct sdebug_dev_info *devip)
{
int pf, sp, ps, md_len, bd_len, off, spf, pg_len;
int param_len, res, mpage;
}
/* Returns number of bytes copied or -1 if error. */
-static int
-do_device_access(struct scsi_cmnd *scmd, u64 lba, u32 num, bool do_write)
+static int do_device_access(struct scsi_cmnd *scmd, u64 lba, u32 num,
+ bool do_write)
{
int ret;
u64 block, rest = 0;
/* If fake_store(lba,num) compares equal to arr(num), then copy top half of
* arr into fake_store(lba,num) and return true. If comparison fails then
* return false. */
-static bool
-comp_write_worker(u64 lba, u32 num, const u8 *arr)
+static bool comp_write_worker(u64 lba, u32 num, const u8 *arr)
{
bool res;
u64 block, rest = 0;
return 0;
}
-static int
-resp_read_dt0(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
+static int resp_read_dt0(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
{
u8 *cmd = scp->cmnd;
u64 lba;
}
}
-static int
-resp_write_dt0(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
+static int resp_write_dt0(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
{
u8 *cmd = scp->cmnd;
u64 lba;
return 0;
}
-static int
-resp_write_same(struct scsi_cmnd *scp, u64 lba, u32 num, u32 ei_lba,
- bool unmap, bool ndob)
+static int resp_write_same(struct scsi_cmnd *scp, u64 lba, u32 num,
+ u32 ei_lba, bool unmap, bool ndob)
{
unsigned long iflags;
unsigned long long i;
return 0;
}
-static int
-resp_write_same_10(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
+static int resp_write_same_10(struct scsi_cmnd *scp,
+ struct sdebug_dev_info *devip)
{
u8 *cmd = scp->cmnd;
u32 lba;
return resp_write_same(scp, lba, num, ei_lba, unmap, false);
}
-static int
-resp_write_same_16(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
+static int resp_write_same_16(struct scsi_cmnd *scp,
+ struct sdebug_dev_info *devip)
{
u8 *cmd = scp->cmnd;
u64 lba;
/* Note the mode field is in the same position as the (lower) service action
* field. For the Report supported operation codes command, SPC-4 suggests
* each mode of this command should be reported separately; for future. */
-static int
-resp_write_buffer(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
+static int resp_write_buffer(struct scsi_cmnd *scp,
+ struct sdebug_dev_info *devip)
{
u8 *cmd = scp->cmnd;
struct scsi_device *sdp = scp->device;
return 0;
}
-static int
-resp_comp_write(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
+static int resp_comp_write(struct scsi_cmnd *scp,
+ struct sdebug_dev_info *devip)
{
u8 *cmd = scp->cmnd;
u8 *arr;
__be32 __reserved;
};
-static int
-resp_unmap(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
+static int resp_unmap(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
{
unsigned char *buf;
struct unmap_block_desc *desc;
#define SDEBUG_GET_LBA_STATUS_LEN 32
-static int
-resp_get_lba_status(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
+static int resp_get_lba_status(struct scsi_cmnd *scp,
+ struct sdebug_dev_info *devip)
{
u8 *cmd = scp->cmnd;
u64 lba;
return 0;
}
-static int
-resp_xdwriteread_10(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
+static int resp_xdwriteread_10(struct scsi_cmnd *scp,
+ struct sdebug_dev_info *devip)
{
u8 *cmd = scp->cmnd;
u64 lba;
}
/* Queued command completions converge here. */
-static void
-sdebug_q_cmd_complete(struct sdebug_defer *sd_dp)
+static void sdebug_q_cmd_complete(struct sdebug_defer *sd_dp)
{
int qa_indx;
int retiring = 0;
}
/* When high resolution timer goes off this function is called. */
-static enum hrtimer_restart
-sdebug_q_cmd_hrt_complete(struct hrtimer *timer)
+static enum hrtimer_restart sdebug_q_cmd_hrt_complete(struct hrtimer *timer)
{
struct sdebug_defer *sd_dp = container_of(timer, struct sdebug_defer,
hrt);
}
/* When work queue schedules work, it calls this function. */
-static void
-sdebug_q_cmd_wq_complete(struct work_struct *work)
+static void sdebug_q_cmd_wq_complete(struct work_struct *work)
{
struct sdebug_defer *sd_dp = container_of(work, struct sdebug_defer,
ew.work);
sdebug_q_cmd_complete(sd_dp);
}
-static struct sdebug_dev_info *
-sdebug_device_create(struct sdebug_host_info *sdbg_host, gfp_t flags)
+static struct sdebug_dev_info *sdebug_device_create(
+ struct sdebug_host_info *sdbg_host, gfp_t flags)
{
struct sdebug_dev_info *devip;
}
}
-static int
-schedule_resp(struct scsi_cmnd *cmnd, struct sdebug_dev_info *devip,
- int scsi_result, int delta_jiff)
+static int schedule_resp(struct scsi_cmnd *cmnd, struct sdebug_dev_info *devip,
+ int scsi_result, int delta_jiff)
{
unsigned long iflags;
int k, num_in_q, qdepth, inject;
}
/* 'echo <val> > /proc/scsi/scsi_debug/<host_id>' writes to opts */
-static int scsi_debug_write_info(struct Scsi_Host *host, char *buffer, int length)
+static int scsi_debug_write_info(struct Scsi_Host *host, char *buffer,
+ int length)
{
char arr[16];
int opts;
/* Returns -EBUSY if ndelay is being changed and commands are queued */
/* If > 0 and accepted then sdebug_jdelay is set to JDELAY_OVERRIDDEN */
static ssize_t ndelay_store(struct device_driver *ddp, const char *buf,
- size_t count)
+ size_t count)
{
unsigned long iflags;
int ndelay, res, k;
return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_add_host);
}
+static int sdebug_add_adapter(void);
+static void sdebug_remove_adapter(void);
+
static ssize_t add_host_store(struct device_driver *ddp, const char *buf,
size_t count)
{
--sdebug_add_host;
}
-static int
-sdebug_change_qdepth(struct scsi_device *sdev, int qdepth)
+static int sdebug_change_qdepth(struct scsi_device *sdev, int qdepth)
{
int num_in_q = 0;
unsigned long iflags;
return sdev->queue_depth;
}
-static int
-check_inject(struct scsi_cmnd *scp)
+static int check_inject(struct scsi_cmnd *scp)
{
struct sdebug_scmd_extra_t *ep = scsi_cmd_priv(scp);
return 0;
}
-static int
-scsi_debug_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *scp)
+static int scsi_debug_queuecommand(struct Scsi_Host *shost,
+ struct scsi_cmnd *scp)
{
u8 sdeb_i;
struct scsi_device *sdp = scp->device;
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