ide: don't abuse cmd_type

Currently the legacy ide driver defines several request types of it's own,
which is in the way of removing that field entirely.

Instead add a type field to struct ide_request and use that to distinguish
the different types of IDE-internal requests.

It's a bit of a mess, but so is the surrounding code..

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jens Axboe <axboe@fb.com>

14 files changed, 117 insertions, 51 deletions

diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c
index 7c826ecbd276..a8c650e8c92e 100644
--- a/drivers/ide/ide-atapi.c
+++ b/drivers/ide/ide-atapi.c
@@ -95,6 +95,7 @@ int ide_queue_pc_tail(ide_drive_t *drive, struct gendisk *disk,
         rq = blk_get_request(drive->queue, READ, __GFP_RECLAIM);
         scsi_req_init(rq);
         rq->cmd_type = REQ_TYPE_DRV_PRIV;
+        ide_req(rq)->type = ATA_PRIV_MISC;
         rq->special = (char *)pc;
 
         if (buf && bufflen) {
@@ -193,7 +194,7 @@ void ide_prep_sense(ide_drive_t *drive, struct request *rq)
 
         BUG_ON(sense_len > sizeof(*sense));
 
-        if (rq->cmd_type == REQ_TYPE_ATA_SENSE || drive->sense_rq_armed)
+        if (ata_sense_request(rq) || drive->sense_rq_armed)
                 return;
 
         memset(sense, 0, sizeof(*sense));
@@ -211,7 +212,8 @@ void ide_prep_sense(ide_drive_t *drive, struct request *rq)
         }
 
         sense_rq->rq_disk = rq->rq_disk;
-        sense_rq->cmd_type = REQ_TYPE_ATA_SENSE;
+        sense_rq->cmd_type = REQ_TYPE_DRV_PRIV;
+        ide_req(sense_rq)->type = ATA_PRIV_SENSE;
         sense_rq->rq_flags |= RQF_PREEMPT;
 
         req->cmd[0] = GPCMD_REQUEST_SENSE;
@@ -313,10 +315,14 @@ int ide_cd_get_xferlen(struct request *rq)
         switch (rq->cmd_type) {
         case REQ_TYPE_FS:
                 return 32768;
-        case REQ_TYPE_ATA_SENSE:
         case REQ_TYPE_BLOCK_PC:
-        case REQ_TYPE_ATA_PC:
                 return blk_rq_bytes(rq);
+        case REQ_TYPE_DRV_PRIV:
+                switch (ide_req(rq)->type) {
+                case ATA_PRIV_PC:
+                case ATA_PRIV_SENSE:
+                        return blk_rq_bytes(rq);
+                }
         default:
                 return 0;
         }
@@ -377,7 +383,7 @@ int ide_check_ireason(ide_drive_t *drive, struct request *rq, int len,
                                 drive->name, __func__, ireason);
         }
 
-        if (dev_is_idecd(drive) && rq->cmd_type == REQ_TYPE_ATA_PC)
+        if (dev_is_idecd(drive) && ata_pc_request(rq))
                 rq->rq_flags |= RQF_FAILED;
 
         return 1;
@@ -480,7 +486,7 @@ static ide_startstop_t ide_pc_intr(ide_drive_t *drive)
                 if (uptodate == 0)
                         drive->failed_pc = NULL;
 
-                if (rq->cmd_type == REQ_TYPE_DRV_PRIV) {
+                if (ata_misc_request(rq)) {
                         rq->errors = 0;
                         error = 0;
                 } else {
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index 6eb98725e194..207af7816544 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -210,7 +210,7 @@ static void cdrom_analyze_sense_data(ide_drive_t *drive,
 static void ide_cd_complete_failed_rq(ide_drive_t *drive, struct request *rq)
 {
         /*
-         * For REQ_TYPE_ATA_SENSE, "rq->special" points to the original
+         * For ATA_PRIV_SENSE, "rq->special" points to the original
          * failed request.  Also, the sense data should be read
          * directly from rq which might be different from the original
          * sense buffer if it got copied during mapping.
@@ -282,7 +282,7 @@ static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
                                   "stat 0x%x",
                                   rq->cmd[0], rq->cmd_type, err, stat);
 
-        if (rq->cmd_type == REQ_TYPE_ATA_SENSE) {
+        if (ata_sense_request(rq)) {
                 /*
                  * We got an error trying to get sense info from the drive
                  * (probably while trying to recover from a former error).
@@ -438,7 +438,8 @@ int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
                 rq = blk_get_request(drive->queue, write, __GFP_RECLAIM);
                 scsi_req_init(rq);
                 memcpy(scsi_req(rq)->cmd, cmd, BLK_MAX_CDB);
-                rq->cmd_type = REQ_TYPE_ATA_PC;
+                rq->cmd_type = REQ_TYPE_DRV_PRIV;
+                ide_req(rq)->type = ATA_PRIV_PC;
                 rq->rq_flags |= rq_flags;
                 rq->timeout = timeout;
                 if (buffer) {
@@ -520,7 +521,7 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
         ide_expiry_t *expiry = NULL;
         int dma_error = 0, dma, thislen, uptodate = 0;
         int write = (rq_data_dir(rq) == WRITE) ? 1 : 0, rc = 0;
-        int sense = (rq->cmd_type == REQ_TYPE_ATA_SENSE);
+        int sense = ata_sense_request(rq);
         unsigned int timeout;
         u16 len;
         u8 ireason, stat;
@@ -785,18 +786,22 @@ static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
                 if (cdrom_start_rw(drive, rq) == ide_stopped)
                         goto out_end;
                 break;
-        case REQ_TYPE_ATA_SENSE:
         case REQ_TYPE_BLOCK_PC:
-        case REQ_TYPE_ATA_PC:
+        handle_pc:
                 if (!rq->timeout)
                         rq->timeout = ATAPI_WAIT_PC;
-
                 cdrom_do_block_pc(drive, rq);
                 break;
         case REQ_TYPE_DRV_PRIV:
-                /* right now this can only be a reset... */
-                uptodate = 1;
-                goto out_end;
+                switch (ide_req(rq)->type) {
+                case ATA_PRIV_MISC:
+                        /* right now this can only be a reset... */
+                        uptodate = 1;
+                        goto out_end;
+                case ATA_PRIV_SENSE:
+                case ATA_PRIV_PC:
+                        goto handle_pc;
+                }
         default:
                 BUG();
         }
diff --git a/drivers/ide/ide-cd_ioctl.c b/drivers/ide/ide-cd_ioctl.c
index da0aa0153fb1..3f03eed0ff78 100644
--- a/drivers/ide/ide-cd_ioctl.c
+++ b/drivers/ide/ide-cd_ioctl.c
@@ -306,6 +306,7 @@ int ide_cdrom_reset(struct cdrom_device_info *cdi)
         rq = blk_get_request(drive->queue, READ, __GFP_RECLAIM);
         scsi_req_init(rq);
         rq->cmd_type = REQ_TYPE_DRV_PRIV;
+        ide_req(rq)->type = ATA_PRIV_MISC;
         rq->rq_flags = RQF_QUIET;
         ret = blk_execute_rq(drive->queue, cd->disk, rq, 0);
         blk_put_request(rq);
diff --git a/drivers/ide/ide-devsets.c b/drivers/ide/ide-devsets.c
index fd56c9dd9bc7..c040b9de2b4e 100644
--- a/drivers/ide/ide-devsets.c
+++ b/drivers/ide/ide-devsets.c
@@ -168,6 +168,7 @@ int ide_devset_execute(ide_drive_t *drive, const struct ide_devset *setting,
         rq = blk_get_request(q, READ, __GFP_RECLAIM);
         scsi_req_init(rq);
         rq->cmd_type = REQ_TYPE_DRV_PRIV;
+        ide_req(rq)->type = ATA_PRIV_MISC;
         scsi_req(rq)->cmd_len = 5;
         scsi_req(rq)->cmd[0] = REQ_DEVSET_EXEC;
         *(int *)&scsi_req(rq)->cmd[1] = arg;
diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 3437c5b28599..69cf71729841 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -453,7 +453,8 @@ static int idedisk_prep_fn(struct request_queue *q, struct request *rq)
         cmd->tf_flags = IDE_TFLAG_DYN;
         cmd->protocol = ATA_PROT_NODATA;
 
-        rq->cmd_type = REQ_TYPE_ATA_TASKFILE;
+        rq->cmd_type = REQ_TYPE_DRV_PRIV;
+        ide_req(rq)->type = ATA_PRIV_TASKFILE;
         rq->special = cmd;
         cmd->rq = rq;
 
@@ -479,7 +480,8 @@ static int set_multcount(ide_drive_t *drive, int arg)
 
         rq = blk_get_request(drive->queue, READ, __GFP_RECLAIM);
         scsi_req_init(rq);
-        rq->cmd_type = REQ_TYPE_ATA_TASKFILE;
+        rq->cmd_type = REQ_TYPE_DRV_PRIV;
+        ide_req(rq)->type = ATA_PRIV_TASKFILE;
 
         drive->mult_req = arg;
         drive->special_flags |= IDE_SFLAG_SET_MULTMODE;
diff --git a/drivers/ide/ide-eh.c b/drivers/ide/ide-eh.c
index 35e5b892f9d7..1e4b1476e559 100644
--- a/drivers/ide/ide-eh.c
+++ b/drivers/ide/ide-eh.c
@@ -124,7 +124,7 @@ ide_startstop_t ide_error(ide_drive_t *drive, const char *msg, u8 stat)
 
         /* retry only "normal" I/O: */
         if (rq->cmd_type != REQ_TYPE_FS) {
-                if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
+                if (ata_taskfile_request(rq)) {
                         struct ide_cmd *cmd = rq->special;
 
                         if (cmd)
@@ -147,7 +147,7 @@ static inline void ide_complete_drive_reset(ide_drive_t *drive, int err)
 {
         struct request *rq = drive->hwif->rq;
 
-        if (rq && rq->cmd_type == REQ_TYPE_DRV_PRIV &&
+        if (rq && ata_misc_request(rq) &&
             scsi_req(rq)->cmd[0] == REQ_DRIVE_RESET) {
                 if (err <= 0 && rq->errors == 0)
                         rq->errors = -EIO;
diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
index 3bd678ad3519..24c6d363b3a4 100644
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -97,7 +97,7 @@ static int ide_floppy_callback(ide_drive_t *drive, int dsc)
                                "Aborting request!\n");
         }
 
-        if (rq->cmd_type == REQ_TYPE_DRV_PRIV)
+        if (ata_misc_request(rq))
                 rq->errors = uptodate ? 0 : IDE_DRV_ERROR_GENERAL;
 
         return uptodate;
@@ -246,7 +246,7 @@ static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive,
                 } else
                         printk(KERN_ERR PFX "%s: I/O error\n", drive->name);
 
-                if (rq->cmd_type == REQ_TYPE_DRV_PRIV) {
+                if (ata_misc_request(rq)) {
                         rq->errors = 0;
                         ide_complete_rq(drive, 0, blk_rq_bytes(rq));
                         return ide_stopped;
@@ -265,14 +265,20 @@ static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive,
                 pc = &floppy->queued_pc;
                 idefloppy_create_rw_cmd(drive, pc, rq, (unsigned long)block);
                 break;
-        case REQ_TYPE_DRV_PRIV:
-        case REQ_TYPE_ATA_SENSE:
-                pc = (struct ide_atapi_pc *)rq->special;
-                break;
         case REQ_TYPE_BLOCK_PC:
                 pc = &floppy->queued_pc;
                 idefloppy_blockpc_cmd(floppy, pc, rq);
                 break;
+        case REQ_TYPE_DRV_PRIV:
+                switch (ide_req(rq)->type) {
+                case ATA_PRIV_MISC:
+                case ATA_PRIV_SENSE:
+                        pc = (struct ide_atapi_pc *)rq->special;
+                        break;
+                default:
+                        BUG();
+                }
+                break;
         default:
                 BUG();
         }
diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index 3378503afed4..6735c92b8da7 100644
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -102,7 +102,7 @@ void ide_complete_cmd(ide_drive_t *drive, struct ide_cmd *cmd, u8 stat, u8 err)
                         drive->dev_flags |= IDE_DFLAG_PARKED;
         }
 
-        if (rq && rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
+        if (rq && ata_taskfile_request(rq)) {
                 struct ide_cmd *orig_cmd = rq->special;
 
                 if (cmd->tf_flags & IDE_TFLAG_DYN)
@@ -135,7 +135,7 @@ EXPORT_SYMBOL(ide_complete_rq);
 
 void ide_kill_rq(ide_drive_t *drive, struct request *rq)
 {
-        u8 drv_req = (rq->cmd_type == REQ_TYPE_DRV_PRIV) && rq->rq_disk;
+        u8 drv_req = ata_misc_request(rq) && rq->rq_disk;
         u8 media = drive->media;
 
         drive->failed_pc = NULL;
@@ -340,7 +340,7 @@ static ide_startstop_t start_request (ide_drive_t *drive, struct request *rq)
                 if (drive->current_speed == 0xff)
                         ide_config_drive_speed(drive, drive->desired_speed);
 
-                if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE)
+                if (ata_taskfile_request(rq))
                         return execute_drive_cmd(drive, rq);
                 else if (ata_pm_request(rq)) {
                         struct ide_pm_state *pm = rq->special;
@@ -353,7 +353,7 @@ static ide_startstop_t start_request (ide_drive_t *drive, struct request *rq)
                             pm->pm_step == IDE_PM_COMPLETED)
                                 ide_complete_pm_rq(drive, rq);
                         return startstop;
-                } else if (!rq->rq_disk && rq->cmd_type == REQ_TYPE_DRV_PRIV)
+                } else if (!rq->rq_disk && ata_misc_request(rq))
                         /*
                          * TODO: Once all ULDs have been modified to
                          * check for specific op codes rather than
diff --git a/drivers/ide/ide-ioctls.c b/drivers/ide/ide-ioctls.c
index a5d22c6e956a..fc19e842deef 100644
--- a/drivers/ide/ide-ioctls.c
+++ b/drivers/ide/ide-ioctls.c
@@ -127,7 +127,8 @@ static int ide_cmd_ioctl(ide_drive_t *drive, unsigned long arg)
 
                 rq = blk_get_request(drive->queue, READ, __GFP_RECLAIM);
                 scsi_req_init(rq);
-                rq->cmd_type = REQ_TYPE_ATA_TASKFILE;
+                rq->cmd_type = REQ_TYPE_DRV_PRIV;
+                ide_req(rq)->type = ATA_PRIV_TASKFILE;
                 err = blk_execute_rq(drive->queue, NULL, rq, 0);
                 blk_put_request(rq);
 
@@ -225,6 +226,7 @@ static int generic_drive_reset(ide_drive_t *drive)
         rq = blk_get_request(drive->queue, READ, __GFP_RECLAIM);
         scsi_req_init(rq);
         rq->cmd_type = REQ_TYPE_DRV_PRIV;
+        ide_req(rq)->type = ATA_PRIV_MISC;
         scsi_req(rq)->cmd_len = 1;
         scsi_req(rq)->cmd[0] = REQ_DRIVE_RESET;
         if (blk_execute_rq(drive->queue, NULL, rq, 1))
diff --git a/drivers/ide/ide-park.c b/drivers/ide/ide-park.c
index c37604a75097..fc3c944ca4be 100644
--- a/drivers/ide/ide-park.c
+++ b/drivers/ide/ide-park.c
@@ -36,6 +36,7 @@ static void issue_park_cmd(ide_drive_t *drive, unsigned long timeout)
         scsi_req(rq)->cmd[0] = REQ_PARK_HEADS;
         scsi_req(rq)->cmd_len = 1;
         rq->cmd_type = REQ_TYPE_DRV_PRIV;
+        ide_req(rq)->type = ATA_PRIV_MISC;
         rq->special = &timeout;
         rc = blk_execute_rq(q, NULL, rq, 1);
         blk_put_request(rq);
@@ -54,6 +55,7 @@ static void issue_park_cmd(ide_drive_t *drive, unsigned long timeout)
         scsi_req(rq)->cmd[0] = REQ_UNPARK_HEADS;
         scsi_req(rq)->cmd_len = 1;
         rq->cmd_type = REQ_TYPE_DRV_PRIV;
+        ide_req(rq)->type = ATA_PRIV_MISC;
         elv_add_request(q, rq, ELEVATOR_INSERT_FRONT);
 
 out:
diff --git a/drivers/ide/ide-pm.c b/drivers/ide/ide-pm.c
index f6767aba7cfb..0c1296815dfa 100644
--- a/drivers/ide/ide-pm.c
+++ b/drivers/ide/ide-pm.c
@@ -20,7 +20,8 @@ int generic_ide_suspend(struct device *dev, pm_message_t mesg)
         memset(&rqpm, 0, sizeof(rqpm));
         rq = blk_get_request(drive->queue, READ, __GFP_RECLAIM);
         scsi_req_init(rq);
-        rq->cmd_type = REQ_TYPE_ATA_PM_SUSPEND;
+        rq->cmd_type = REQ_TYPE_DRV_PRIV;
+        ide_req(rq)->type = ATA_PRIV_PM_SUSPEND;
         rq->special = &rqpm;
         rqpm.pm_step = IDE_PM_START_SUSPEND;
         if (mesg.event == PM_EVENT_PRETHAW)
@@ -91,7 +92,8 @@ int generic_ide_resume(struct device *dev)
         memset(&rqpm, 0, sizeof(rqpm));
         rq = blk_get_request(drive->queue, READ, __GFP_RECLAIM);
         scsi_req_init(rq);
-        rq->cmd_type = REQ_TYPE_ATA_PM_RESUME;
+        rq->cmd_type = REQ_TYPE_DRV_PRIV;
+        ide_req(rq)->type = ATA_PRIV_PM_RESUME;
         rq->rq_flags |= RQF_PREEMPT;
         rq->special = &rqpm;
         rqpm.pm_step = IDE_PM_START_RESUME;
@@ -223,10 +225,10 @@ void ide_complete_pm_rq(ide_drive_t *drive, struct request *rq)
 
 #ifdef DEBUG_PM
         printk("%s: completing PM request, %s\n", drive->name,
-               (rq->cmd_type == REQ_TYPE_ATA_PM_SUSPEND) ? "suspend" : "resume");
+               (ide_req(rq)->type == ATA_PRIV_PM_SUSPEND) ? "suspend" : "resume");
 #endif
         spin_lock_irqsave(q->queue_lock, flags);
-        if (rq->cmd_type == REQ_TYPE_ATA_PM_SUSPEND)
+        if (ide_req(rq)->type == ATA_PRIV_PM_SUSPEND)
                 blk_stop_queue(q);
         else
                 drive->dev_flags &= ~IDE_DFLAG_BLOCKED;
@@ -242,11 +244,13 @@ void ide_check_pm_state(ide_drive_t *drive, struct request *rq)
 {
         struct ide_pm_state *pm = rq->special;
 
-        if (rq->cmd_type == REQ_TYPE_ATA_PM_SUSPEND &&
+        if (rq->cmd_type == REQ_TYPE_DRV_PRIV &&
+            ide_req(rq)->type == ATA_PRIV_PM_SUSPEND &&
             pm->pm_step == IDE_PM_START_SUSPEND)
                 /* Mark drive blocked when starting the suspend sequence. */
                 drive->dev_flags |= IDE_DFLAG_BLOCKED;
-        else if (rq->cmd_type == REQ_TYPE_ATA_PM_RESUME &&
+        else if (rq->cmd_type == REQ_TYPE_DRV_PRIV &&
+                 ide_req(rq)->type == ATA_PRIV_PM_RESUME &&
                  pm->pm_step == IDE_PM_START_RESUME) {
                 /*
                  * The first thing we do on wakeup is to wait for BSY bit to
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index f6bc1e2bb035..37c7beabaacc 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -577,8 +577,9 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
                       req->cmd[0], (unsigned long long)blk_rq_pos(rq),
                       blk_rq_sectors(rq));
 
-        BUG_ON(!(rq->cmd_type == REQ_TYPE_DRV_PRIV ||
-                 rq->cmd_type == REQ_TYPE_ATA_SENSE));
+        BUG_ON(rq->cmd_type != REQ_TYPE_DRV_PRIV);
+        BUG_ON(ide_req(rq)->type != ATA_PRIV_MISC &&
+               ide_req(rq)->type != ATA_PRIV_SENSE);
 
         /* Retry a failed packet command */
         if (drive->failed_pc && drive->pc->c[0] == REQUEST_SENSE) {
@@ -856,6 +857,7 @@ static int idetape_queue_rw_tail(ide_drive_t *drive, int cmd, int size)
         rq = blk_get_request(drive->queue, READ, __GFP_RECLAIM);
         scsi_req_init(rq);
         rq->cmd_type = REQ_TYPE_DRV_PRIV;
+        ide_req(rq)->type = ATA_PRIV_MISC;
         scsi_req(rq)->cmd[13] = cmd;
         rq->rq_disk = tape->disk;
         rq->__sector = tape->first_frame;
diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c
index a393e13b8007..9ccc1d573393 100644
--- a/drivers/ide/ide-taskfile.c
+++ b/drivers/ide/ide-taskfile.c
@@ -432,7 +432,8 @@ int ide_raw_taskfile(ide_drive_t *drive, struct ide_cmd *cmd, u8 *buf,
 
         rq = blk_get_request(drive->queue, rw, __GFP_RECLAIM);
         scsi_req_init(rq);
-        rq->cmd_type = REQ_TYPE_ATA_TASKFILE;
+        rq->cmd_type = REQ_TYPE_DRV_PRIV;
+        ide_req(rq)->type = ATA_PRIV_TASKFILE;
 
         /*
          * (ks) We transfer currently only whole sectors.
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 086fbe172817..5cc6caa94cac 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -40,24 +40,58 @@
 
 struct device;
 
-/* IDE-specific values for req->cmd_type */
-enum ata_cmd_type_bits {
-        REQ_TYPE_ATA_TASKFILE = REQ_TYPE_DRV_PRIV + 1,
-        REQ_TYPE_ATA_PC,
-        REQ_TYPE_ATA_SENSE,     /* sense request */
-        REQ_TYPE_ATA_PM_SUSPEND,/* suspend request */
-        REQ_TYPE_ATA_PM_RESUME, /* resume request */
+/* values for ide_request.type */
+enum ata_priv_type {
+        ATA_PRIV_MISC,
+        ATA_PRIV_TASKFILE,
+        ATA_PRIV_PC,
+        ATA_PRIV_SENSE,         /* sense request */
+        ATA_PRIV_PM_SUSPEND,    /* suspend request */
+        ATA_PRIV_PM_RESUME,     /* resume request */
 };
 
-#define ata_pm_request(rq)      \
-        ((rq)->cmd_type == REQ_TYPE_ATA_PM_SUSPEND || \
-         (rq)->cmd_type == REQ_TYPE_ATA_PM_RESUME)
-
 struct ide_request {
         struct scsi_request sreq;
         u8 sense[SCSI_SENSE_BUFFERSIZE];
+        u8 type;
 };
 
+static inline struct ide_request *ide_req(struct request *rq)
+{
+        return blk_mq_rq_to_pdu(rq);
+}
+
+static inline bool ata_misc_request(struct request *rq)
+{
+        return rq->cmd_type == REQ_TYPE_DRV_PRIV &&
+               ide_req(rq)->type == ATA_PRIV_MISC;
+}
+
+static inline bool ata_taskfile_request(struct request *rq)
+{
+        return rq->cmd_type == REQ_TYPE_DRV_PRIV &&
+               ide_req(rq)->type == ATA_PRIV_TASKFILE;
+}
+
+static inline bool ata_pc_request(struct request *rq)
+{
+        return rq->cmd_type == REQ_TYPE_DRV_PRIV &&
+               ide_req(rq)->type == ATA_PRIV_PC;
+}
+
+static inline bool ata_sense_request(struct request *rq)
+{
+        return rq->cmd_type == REQ_TYPE_DRV_PRIV &&
+               ide_req(rq)->type == ATA_PRIV_SENSE;
+}
+
+static inline bool ata_pm_request(struct request *rq)
+{
+        return rq->cmd_type == REQ_TYPE_DRV_PRIV &&
+                (ide_req(rq)->type == ATA_PRIV_PM_SUSPEND ||
+                 ide_req(rq)->type == ATA_PRIV_PM_RESUME);
+}
+
 /* Error codes returned in rq->errors to the higher part of the driver. */
 enum {
         IDE_DRV_ERROR_GENERAL   = 101,