mirror of https://gitee.com/openkylin/linux.git
ide: add pointer to the current packet command to ide_drive_t
* Add pointer to the current packet command (struct ide_atapi_pc *pc)
to ide_drive_t and use it instead of the pointer in struct ide_*_obj.
* Use drive->pc in ide_{issue,transfer}_pc() and ide_pc_intr()
instead of 'pc' argument.
There should be no functional changes caused by this patch.
Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz
parent
b14c72127f
commit
2b9efba482
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@ -204,12 +204,13 @@ int ide_set_media_lock(ide_drive_t *drive, struct gendisk *disk, int on)
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EXPORT_SYMBOL_GPL(ide_set_media_lock);
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/* TODO: unify the code thus making some arguments go away */
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ide_startstop_t ide_pc_intr(ide_drive_t *drive, struct ide_atapi_pc *pc,
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ide_startstop_t ide_pc_intr(ide_drive_t *drive,
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ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry,
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void (*update_buffers)(ide_drive_t *, struct ide_atapi_pc *),
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void (*retry_pc)(ide_drive_t *),
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int (*io_buffers)(ide_drive_t *, struct ide_atapi_pc *, unsigned, int))
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{
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struct ide_atapi_pc *pc = drive->pc;
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ide_hwif_t *hwif = drive->hwif;
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struct request *rq = hwif->hwgroup->rq;
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const struct ide_tp_ops *tp_ops = hwif->tp_ops;
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@ -416,10 +417,11 @@ static u8 ide_wait_ireason(ide_drive_t *drive, u8 ireason)
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return ireason;
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}
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ide_startstop_t ide_transfer_pc(ide_drive_t *drive, struct ide_atapi_pc *pc,
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ide_startstop_t ide_transfer_pc(ide_drive_t *drive,
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ide_handler_t *handler, unsigned int timeout,
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ide_expiry_t *expiry)
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{
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struct ide_atapi_pc *pc = drive->pc;
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ide_hwif_t *hwif = drive->hwif;
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struct request *rq = hwif->hwgroup->rq;
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ide_startstop_t startstop;
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@ -458,10 +460,11 @@ ide_startstop_t ide_transfer_pc(ide_drive_t *drive, struct ide_atapi_pc *pc,
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}
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EXPORT_SYMBOL_GPL(ide_transfer_pc);
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ide_startstop_t ide_issue_pc(ide_drive_t *drive, struct ide_atapi_pc *pc,
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ide_startstop_t ide_issue_pc(ide_drive_t *drive,
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ide_handler_t *handler, unsigned int timeout,
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ide_expiry_t *expiry)
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{
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struct ide_atapi_pc *pc = drive->pc;
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ide_hwif_t *hwif = drive->hwif;
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u16 bcount;
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u8 dma = 0;
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@ -159,7 +159,7 @@ static void idefloppy_update_buffers(ide_drive_t *drive,
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static void ide_floppy_callback(ide_drive_t *drive, int dsc)
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{
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idefloppy_floppy_t *floppy = drive->driver_data;
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struct ide_atapi_pc *pc = floppy->pc;
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struct ide_atapi_pc *pc = drive->pc;
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int uptodate = pc->error ? 0 : 1;
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debug_log("Reached %s\n", __func__);
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@ -171,7 +171,7 @@ static void ide_floppy_callback(ide_drive_t *drive, int dsc)
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(pc->rq && blk_pc_request(pc->rq)))
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uptodate = 1; /* FIXME */
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else if (pc->c[0] == GPCMD_REQUEST_SENSE) {
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u8 *buf = floppy->pc->buf;
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u8 *buf = pc->buf;
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if (!pc->error) {
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floppy->sense_key = buf[2] & 0x0F;
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@ -219,9 +219,7 @@ static void idefloppy_retry_pc(ide_drive_t *drive)
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/* The usual interrupt handler called during a packet command. */
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static ide_startstop_t idefloppy_pc_intr(ide_drive_t *drive)
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{
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idefloppy_floppy_t *floppy = drive->driver_data;
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return ide_pc_intr(drive, floppy->pc, idefloppy_pc_intr,
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return ide_pc_intr(drive, idefloppy_pc_intr,
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WAIT_FLOPPY_CMD, NULL, idefloppy_update_buffers,
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idefloppy_retry_pc, ide_io_buffers);
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}
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@ -234,10 +232,8 @@ static ide_startstop_t idefloppy_pc_intr(ide_drive_t *drive)
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*/
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static int idefloppy_transfer_pc(ide_drive_t *drive)
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{
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idefloppy_floppy_t *floppy = drive->driver_data;
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/* Send the actual packet */
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drive->hwif->tp_ops->output_data(drive, NULL, floppy->pc->c, 12);
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drive->hwif->tp_ops->output_data(drive, NULL, drive->pc->c, 12);
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/* Timeout for the packet command */
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return WAIT_FLOPPY_CMD;
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@ -251,7 +247,6 @@ static int idefloppy_transfer_pc(ide_drive_t *drive)
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static ide_startstop_t idefloppy_start_pc_transfer(ide_drive_t *drive)
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{
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idefloppy_floppy_t *floppy = drive->driver_data;
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struct ide_atapi_pc *pc = floppy->pc;
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ide_expiry_t *expiry;
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unsigned int timeout;
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@ -271,7 +266,7 @@ static ide_startstop_t idefloppy_start_pc_transfer(ide_drive_t *drive)
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expiry = NULL;
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}
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return ide_transfer_pc(drive, pc, idefloppy_pc_intr, timeout, expiry);
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return ide_transfer_pc(drive, idefloppy_pc_intr, timeout, expiry);
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}
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static void ide_floppy_report_error(idefloppy_floppy_t *floppy,
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@ -298,8 +293,9 @@ static ide_startstop_t idefloppy_issue_pc(ide_drive_t *drive,
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if (floppy->failed_pc == NULL &&
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pc->c[0] != GPCMD_REQUEST_SENSE)
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floppy->failed_pc = pc;
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/* Set the current packet command */
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floppy->pc = pc;
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drive->pc = pc;
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if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES) {
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if (!(pc->flags & PC_FLAG_SUPPRESS_ERROR))
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@ -316,7 +312,7 @@ static ide_startstop_t idefloppy_issue_pc(ide_drive_t *drive,
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pc->retries++;
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return ide_issue_pc(drive, pc, idefloppy_start_pc_transfer,
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return ide_issue_pc(drive, idefloppy_start_pc_transfer,
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WAIT_FLOPPY_CMD, NULL);
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}
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@ -13,8 +13,6 @@ typedef struct ide_floppy_obj {
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struct kref kref;
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unsigned int openers; /* protected by BKL for now */
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/* Current packet command */
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struct ide_atapi_pc *pc;
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/* Last failed packet command */
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struct ide_atapi_pc *failed_pc;
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/* used for blk_{fs,pc}_request() requests */
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@ -172,15 +172,11 @@ typedef struct ide_tape_obj {
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struct kref kref;
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/*
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* pc points to the current processed packet command.
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*
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* failed_pc points to the last failed packet command, or contains
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* NULL if we do not need to retry any packet command. This is
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* required since an additional packet command is needed before the
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* retry, to get detailed information on what went wrong.
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*/
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/* Current packet command */
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struct ide_atapi_pc *pc;
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/* Last failed packet command */
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struct ide_atapi_pc *failed_pc;
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/* used by REQ_IDETAPE_{READ,WRITE} requests */
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@ -527,7 +523,7 @@ static void ide_tape_handle_dsc(ide_drive_t *);
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static void ide_tape_callback(ide_drive_t *drive, int dsc)
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{
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idetape_tape_t *tape = drive->driver_data;
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struct ide_atapi_pc *pc = tape->pc;
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struct ide_atapi_pc *pc = drive->pc;
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int uptodate = pc->error ? 0 : 1;
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debug_log(DBG_PROCS, "Enter %s\n", __func__);
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@ -563,7 +559,7 @@ static void ide_tape_callback(ide_drive_t *drive, int dsc)
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if (pc->error)
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uptodate = pc->error;
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} else if (pc->c[0] == READ_POSITION && uptodate) {
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u8 *readpos = tape->pc->buf;
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u8 *readpos = pc->buf;
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debug_log(DBG_SENSE, "BOP - %s\n",
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(readpos[0] & 0x80) ? "Yes" : "No");
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@ -659,9 +655,7 @@ static int ide_tape_io_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc,
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*/
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static ide_startstop_t idetape_pc_intr(ide_drive_t *drive)
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{
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idetape_tape_t *tape = drive->driver_data;
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return ide_pc_intr(drive, tape->pc, idetape_pc_intr, WAIT_TAPE_CMD,
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return ide_pc_intr(drive, idetape_pc_intr, WAIT_TAPE_CMD,
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NULL, idetape_update_buffers, idetape_retry_pc,
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ide_tape_io_buffers);
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}
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@ -669,7 +663,7 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive)
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/*
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* Packet Command Interface
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*
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* The current Packet Command is available in tape->pc, and will not change
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* The current Packet Command is available in drive->pc, and will not change
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* until we finish handling it. Each packet command is associated with a
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* callback function that will be called when the command is finished.
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*
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@ -704,10 +698,7 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive)
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*/
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static ide_startstop_t idetape_transfer_pc(ide_drive_t *drive)
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{
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idetape_tape_t *tape = drive->driver_data;
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return ide_transfer_pc(drive, tape->pc, idetape_pc_intr,
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WAIT_TAPE_CMD, NULL);
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return ide_transfer_pc(drive, idetape_pc_intr, WAIT_TAPE_CMD, NULL);
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}
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static ide_startstop_t idetape_issue_pc(ide_drive_t *drive,
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@ -715,7 +706,7 @@ static ide_startstop_t idetape_issue_pc(ide_drive_t *drive,
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{
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idetape_tape_t *tape = drive->driver_data;
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if (tape->pc->c[0] == REQUEST_SENSE &&
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if (drive->pc->c[0] == REQUEST_SENSE &&
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pc->c[0] == REQUEST_SENSE) {
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printk(KERN_ERR "ide-tape: possible ide-tape.c bug - "
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"Two request sense in serial were issued\n");
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@ -723,8 +714,9 @@ static ide_startstop_t idetape_issue_pc(ide_drive_t *drive,
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if (tape->failed_pc == NULL && pc->c[0] != REQUEST_SENSE)
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tape->failed_pc = pc;
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/* Set the current packet command */
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tape->pc = pc;
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drive->pc = pc;
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if (pc->retries > IDETAPE_MAX_PC_RETRIES ||
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(pc->flags & PC_FLAG_ABORT)) {
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@ -755,8 +747,7 @@ static ide_startstop_t idetape_issue_pc(ide_drive_t *drive,
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pc->retries++;
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return ide_issue_pc(drive, pc, idetape_transfer_pc,
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WAIT_TAPE_CMD, NULL);
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return ide_issue_pc(drive, idetape_transfer_pc, WAIT_TAPE_CMD, NULL);
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}
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/* A mode sense command is used to "sense" tape parameters. */
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@ -790,7 +781,7 @@ static ide_startstop_t idetape_media_access_finished(ide_drive_t *drive)
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{
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ide_hwif_t *hwif = drive->hwif;
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idetape_tape_t *tape = drive->driver_data;
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struct ide_atapi_pc *pc = tape->pc;
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struct ide_atapi_pc *pc = drive->pc;
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u8 stat;
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stat = hwif->tp_ops->read_status(hwif);
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@ -867,7 +858,7 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
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}
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/* Retry a failed packet command */
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if (tape->failed_pc && tape->pc->c[0] == REQUEST_SENSE) {
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if (tape->failed_pc && drive->pc->c[0] == REQUEST_SENSE) {
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pc = tape->failed_pc;
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goto out;
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}
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@ -82,7 +82,6 @@ typedef struct ide_scsi_obj {
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struct gendisk *disk;
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struct Scsi_Host *host;
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struct ide_atapi_pc *pc; /* Current packet command */
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unsigned long transform; /* SCSI cmd translation layer */
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unsigned long log; /* log flags */
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} idescsi_scsi_t;
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@ -140,7 +139,7 @@ static int idescsi_end_request(ide_drive_t *, int, int);
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static void ide_scsi_callback(ide_drive_t *drive, int dsc)
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{
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idescsi_scsi_t *scsi = drive_to_idescsi(drive);
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struct ide_atapi_pc *pc = scsi->pc;
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struct ide_atapi_pc *pc = drive->pc;
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if (pc->flags & PC_FLAG_TIMEDOUT)
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debug_log("%s: got timed out packet %lu at %lu\n", __func__,
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@ -267,7 +266,7 @@ static int idescsi_end_request (ide_drive_t *drive, int uptodate, int nrsecs)
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spin_unlock_irqrestore(host->host_lock, flags);
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kfree(pc);
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blk_put_request(rq);
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scsi->pc = NULL;
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drive->pc = NULL;
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return 0;
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}
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@ -278,8 +277,7 @@ static inline unsigned long get_timeout(struct ide_atapi_pc *pc)
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static int idescsi_expiry(ide_drive_t *drive)
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{
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idescsi_scsi_t *scsi = drive_to_idescsi(drive);
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struct ide_atapi_pc *pc = scsi->pc;
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struct ide_atapi_pc *pc = drive->pc;
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debug_log("%s called for %lu at %lu\n", __func__,
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pc->scsi_cmd->serial_number, jiffies);
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@ -294,19 +292,14 @@ static int idescsi_expiry(ide_drive_t *drive)
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*/
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static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive)
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{
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idescsi_scsi_t *scsi = drive_to_idescsi(drive);
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struct ide_atapi_pc *pc = scsi->pc;
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return ide_pc_intr(drive, pc, idescsi_pc_intr, get_timeout(pc),
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return ide_pc_intr(drive, idescsi_pc_intr, get_timeout(drive->pc),
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idescsi_expiry, NULL, NULL, ide_io_buffers);
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}
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static ide_startstop_t idescsi_transfer_pc(ide_drive_t *drive)
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{
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idescsi_scsi_t *scsi = drive_to_idescsi(drive);
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return ide_transfer_pc(drive, scsi->pc, idescsi_pc_intr,
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get_timeout(scsi->pc), idescsi_expiry);
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return ide_transfer_pc(drive, idescsi_pc_intr,
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get_timeout(drive->pc), idescsi_expiry);
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}
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static inline int idescsi_set_direction(struct ide_atapi_pc *pc)
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@ -351,12 +344,10 @@ static int idescsi_map_sg(ide_drive_t *drive, struct ide_atapi_pc *pc)
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static ide_startstop_t idescsi_issue_pc(ide_drive_t *drive,
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struct ide_atapi_pc *pc)
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{
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idescsi_scsi_t *scsi = drive_to_idescsi(drive);
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/* Set the current packet command */
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scsi->pc = pc;
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drive->pc = pc;
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return ide_issue_pc(drive, pc, idescsi_transfer_pc,
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return ide_issue_pc(drive, idescsi_transfer_pc,
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get_timeout(pc), idescsi_expiry);
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}
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@ -621,6 +612,8 @@ static int idescsi_eh_abort (struct scsi_cmnd *cmd)
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int busy;
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int ret = FAILED;
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struct ide_atapi_pc *pc;
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/* In idescsi_eh_abort we try to gently pry our command from the ide subsystem */
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if (test_bit(IDESCSI_LOG_CMD, &scsi->log))
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@ -641,26 +634,27 @@ static int idescsi_eh_abort (struct scsi_cmnd *cmd)
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spin_lock_irq(&ide_lock);
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/* If there is no pc running we're done (our interrupt took care of it) */
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if (!scsi->pc) {
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pc = drive->pc;
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if (pc == NULL) {
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ret = SUCCESS;
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goto ide_unlock;
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}
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/* It's somewhere in flight. Does ide subsystem agree? */
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if (scsi->pc->scsi_cmd->serial_number == cmd->serial_number && !busy &&
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elv_queue_empty(drive->queue) && HWGROUP(drive)->rq != scsi->pc->rq) {
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if (pc->scsi_cmd->serial_number == cmd->serial_number && !busy &&
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elv_queue_empty(drive->queue) && HWGROUP(drive)->rq != pc->rq) {
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/*
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* FIXME - not sure this condition can ever occur
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*/
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printk (KERN_ERR "ide-scsi: cmd aborted!\n");
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if (blk_sense_request(scsi->pc->rq))
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kfree(scsi->pc->buf);
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if (blk_sense_request(pc->rq))
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kfree(pc->buf);
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/* we need to call blk_put_request twice. */
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blk_put_request(scsi->pc->rq);
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blk_put_request(scsi->pc->rq);
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kfree(scsi->pc);
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scsi->pc = NULL;
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blk_put_request(pc->rq);
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blk_put_request(pc->rq);
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kfree(pc);
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drive->pc = NULL;
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ret = SUCCESS;
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}
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@ -682,6 +676,8 @@ static int idescsi_eh_reset (struct scsi_cmnd *cmd)
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int ready = 0;
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int ret = SUCCESS;
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struct ide_atapi_pc *pc;
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/* In idescsi_eh_reset we forcefully remove the command from the ide subsystem and reset the device. */
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|
||||
if (test_bit(IDESCSI_LOG_CMD, &scsi->log))
|
||||
|
|
@ -696,7 +692,9 @@ static int idescsi_eh_reset (struct scsi_cmnd *cmd)
|
|||
spin_lock_irq(cmd->device->host->host_lock);
|
||||
spin_lock(&ide_lock);
|
||||
|
||||
if (!scsi->pc || (req = scsi->pc->rq) != HWGROUP(drive)->rq || !HWGROUP(drive)->handler) {
|
||||
pc = drive->pc;
|
||||
|
||||
if (pc == NULL || (req = pc->rq) != HWGROUP(drive)->rq || !HWGROUP(drive)->handler) {
|
||||
printk (KERN_WARNING "ide-scsi: No active request in idescsi_eh_reset\n");
|
||||
spin_unlock(&ide_lock);
|
||||
spin_unlock_irq(cmd->device->host->host_lock);
|
||||
|
|
@ -707,9 +705,9 @@ static int idescsi_eh_reset (struct scsi_cmnd *cmd)
|
|||
if (__blk_end_request(req, -EIO, 0))
|
||||
BUG();
|
||||
if (blk_sense_request(req))
|
||||
kfree(scsi->pc->buf);
|
||||
kfree(scsi->pc);
|
||||
scsi->pc = NULL;
|
||||
kfree(pc->buf);
|
||||
kfree(pc);
|
||||
drive->pc = NULL;
|
||||
blk_put_request(req);
|
||||
|
||||
/* now nuke the drive queue */
|
||||
|
|
|
|||
|
|
@ -322,6 +322,7 @@ typedef enum {
|
|||
ide_started, /* a drive operation was started, handler was set */
|
||||
} ide_startstop_t;
|
||||
|
||||
struct ide_atapi_pc;
|
||||
struct ide_devset;
|
||||
struct ide_driver_s;
|
||||
|
||||
|
|
@ -484,6 +485,9 @@ struct ide_drive_s {
|
|||
struct device gendev;
|
||||
struct completion gendev_rel_comp; /* to deal with device release() */
|
||||
|
||||
/* current packet command */
|
||||
struct ide_atapi_pc *pc;
|
||||
|
||||
/* callback for packet commands */
|
||||
void (*pc_callback)(struct ide_drive_s *, int);
|
||||
|
||||
|
|
@ -1171,15 +1175,15 @@ int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
|
|||
int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
|
||||
int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
|
||||
|
||||
ide_startstop_t ide_pc_intr(ide_drive_t *drive, struct ide_atapi_pc *pc,
|
||||
ide_startstop_t ide_pc_intr(ide_drive_t *drive,
|
||||
ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry,
|
||||
void (*update_buffers)(ide_drive_t *, struct ide_atapi_pc *),
|
||||
void (*retry_pc)(ide_drive_t *),
|
||||
int (*io_buffers)(ide_drive_t *, struct ide_atapi_pc *, unsigned int,
|
||||
int));
|
||||
ide_startstop_t ide_transfer_pc(ide_drive_t *, struct ide_atapi_pc *,
|
||||
ide_startstop_t ide_transfer_pc(ide_drive_t *,
|
||||
ide_handler_t *, unsigned int, ide_expiry_t *);
|
||||
ide_startstop_t ide_issue_pc(ide_drive_t *, struct ide_atapi_pc *,
|
||||
ide_startstop_t ide_issue_pc(ide_drive_t *,
|
||||
ide_handler_t *, unsigned int, ide_expiry_t *);
|
||||
|
||||
ide_startstop_t do_rw_taskfile(ide_drive_t *, ide_task_t *);
|
||||
|
|
|
|||
Loading…
Reference in New Issue