ide: Remove ide_spin_wait_hwgroup() and use special requests instead
[safe/jmp/linux-2.6] / drivers / ide / ide-cd.c
index ac542ff..465a92c 100644 (file)
@@ -57,24 +57,32 @@ static DEFINE_MUTEX(idecd_ref_mutex);
 #define ide_cd_g(disk) \
        container_of((disk)->private_data, struct cdrom_info, driver)
 
+static void ide_cd_release(struct kref *);
+
 static struct cdrom_info *ide_cd_get(struct gendisk *disk)
 {
        struct cdrom_info *cd = NULL;
 
        mutex_lock(&idecd_ref_mutex);
        cd = ide_cd_g(disk);
-       if (cd)
-               kref_get(&cd->kref);
+       if (cd) {
+               if (ide_device_get(cd->drive))
+                       cd = NULL;
+               else
+                       kref_get(&cd->kref);
+
+       }
        mutex_unlock(&idecd_ref_mutex);
        return cd;
 }
 
-static void ide_cd_release(struct kref *);
-
 static void ide_cd_put(struct cdrom_info *cd)
 {
+       ide_drive_t *drive = cd->drive;
+
        mutex_lock(&idecd_ref_mutex);
        kref_put(&cd->kref, ide_cd_release);
+       ide_device_put(drive);
        mutex_unlock(&idecd_ref_mutex);
 }
 
@@ -85,10 +93,8 @@ static void ide_cd_put(struct cdrom_info *cd)
 /* Mark that we've seen a media change and invalidate our internal buffers. */
 static void cdrom_saw_media_change(ide_drive_t *drive)
 {
-       struct cdrom_info *cd = drive->driver_data;
-
-       cd->cd_flags |= IDE_CD_FLAG_MEDIA_CHANGED;
-       cd->cd_flags &= ~IDE_CD_FLAG_TOC_VALID;
+       drive->atapi_flags |= IDE_AFLAG_MEDIA_CHANGED;
+       drive->atapi_flags &= ~IDE_AFLAG_TOC_VALID;
 }
 
 static int cdrom_log_sense(ide_drive_t *drive, struct request *rq,
@@ -213,7 +219,7 @@ static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense,
        /* NOTE! Save the failed command in "rq->buffer" */
        rq->buffer = (void *) failed_command;
 
-       (void) ide_do_drive_cmd(drive, rq, ide_preempt);
+       ide_do_drive_cmd(drive, rq);
 }
 
 static void cdrom_end_request(ide_drive_t *drive, int uptodate)
@@ -280,11 +286,12 @@ static void ide_dump_status_no_sense(ide_drive_t *drive, const char *msg, u8 st)
  */
 static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
 {
-       struct request *rq = HWGROUP(drive)->rq;
+       ide_hwif_t *hwif = drive->hwif;
+       struct request *rq = hwif->hwgroup->rq;
        int stat, err, sense_key;
 
        /* check for errors */
-       stat = ide_read_status(drive);
+       stat = hwif->tp_ops->read_status(hwif);
 
        if (stat_ret)
                *stat_ret = stat;
@@ -429,7 +436,7 @@ static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
                        ide_dump_status_no_sense(drive, "media error (blank)",
                                                 stat);
                        do_end_request = 1;
-               } else if ((err & ~ABRT_ERR) != 0) {
+               } else if ((err & ~ATA_ABORTED) != 0) {
                        /* go to the default handler for other errors */
                        ide_error(drive, "cdrom_decode_status", stat);
                        return 1;
@@ -450,7 +457,7 @@ static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
                 * If we got a CHECK_CONDITION status, queue
                 * a request sense command.
                 */
-               if (stat & ERR_STAT)
+               if (stat & ATA_ERR)
                        cdrom_queue_request_sense(drive, NULL, NULL);
        } else {
                blk_dump_rq_flags(rq, "ide-cd: bad rq");
@@ -461,7 +468,7 @@ static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
        return 1;
 
 end_request:
-       if (stat & ERR_STAT) {
+       if (stat & ATA_ERR) {
                unsigned long flags;
 
                spin_lock_irqsave(&ide_lock, flags);
@@ -517,29 +524,24 @@ static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive,
                                                  int xferlen,
                                                  ide_handler_t *handler)
 {
-       ide_startstop_t startstop;
        struct cdrom_info *info = drive->driver_data;
        ide_hwif_t *hwif = drive->hwif;
 
-       /* wait for the controller to be idle */
-       if (ide_wait_stat(&startstop, drive, 0, BUSY_STAT, WAIT_READY))
-               return startstop;
-
        /* FIXME: for Virtual DMA we must check harder */
        if (info->dma)
                info->dma = !hwif->dma_ops->dma_setup(drive);
 
        /* set up the controller registers */
-       ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL |
-                          IDE_TFLAG_NO_SELECT_MASK, xferlen, info->dma);
+       ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL,
+                          xferlen, info->dma);
 
-       if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) {
+       if (drive->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT) {
                /* waiting for CDB interrupt, not DMA yet. */
                if (info->dma)
                        drive->waiting_for_dma = 0;
 
                /* packet command */
-               ide_execute_command(drive, WIN_PACKETCMD, handler,
+               ide_execute_command(drive, ATA_CMD_PACKET, handler,
                                    ATAPI_WAIT_PC, cdrom_timer_expiry);
                return ide_started;
        } else {
@@ -565,14 +567,14 @@ static ide_startstop_t cdrom_transfer_packet_command(ide_drive_t *drive,
        struct cdrom_info *info = drive->driver_data;
        ide_startstop_t startstop;
 
-       if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) {
+       if (drive->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT) {
                /*
                 * Here we should have been called after receiving an interrupt
                 * from the device.  DRQ should how be set.
                 */
 
                /* check for errors */
-               if (cdrom_decode_status(drive, DRQ_STAT, NULL))
+               if (cdrom_decode_status(drive, ATA_DRQ, NULL))
                        return ide_stopped;
 
                /* ok, next interrupt will be DMA interrupt */
@@ -580,8 +582,8 @@ static ide_startstop_t cdrom_transfer_packet_command(ide_drive_t *drive,
                        drive->waiting_for_dma = 1;
        } else {
                /* otherwise, we must wait for DRQ to get set */
-               if (ide_wait_stat(&startstop, drive, DRQ_STAT,
-                               BUSY_STAT, WAIT_READY))
+               if (ide_wait_stat(&startstop, drive, ATA_DRQ,
+                                 ATA_BUSY, WAIT_READY))
                        return startstop;
        }
 
@@ -594,7 +596,7 @@ static ide_startstop_t cdrom_transfer_packet_command(ide_drive_t *drive,
                cmd_len = ATAPI_MIN_CDB_BYTES;
 
        /* send the command to the device */
-       hwif->output_data(drive, NULL, rq->cmd, cmd_len);
+       hwif->tp_ops->output_data(drive, NULL, rq->cmd, cmd_len);
 
        /* start the DMA if need be */
        if (info->dma)
@@ -604,28 +606,6 @@ static ide_startstop_t cdrom_transfer_packet_command(ide_drive_t *drive,
 }
 
 /*
- * Block read functions.
- */
-static void ide_cd_pad_transfer(ide_drive_t *drive, xfer_func_t *xf, int len)
-{
-       while (len > 0) {
-               int dum = 0;
-               xf(drive, NULL, &dum, sizeof(dum));
-               len -= sizeof(dum);
-       }
-}
-
-static void ide_cd_drain_data(ide_drive_t *drive, int nsects)
-{
-       while (nsects > 0) {
-               static char dum[SECTOR_SIZE];
-
-               drive->hwif->input_data(drive, NULL, dum, sizeof(dum));
-               nsects--;
-       }
-}
-
-/*
  * Check the contents of the interrupt reason register from the cdrom
  * and attempt to recover if there are problems.  Returns  0 if everything's
  * ok; nonzero if the request has been terminated.
@@ -633,6 +613,8 @@ static void ide_cd_drain_data(ide_drive_t *drive, int nsects)
 static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq,
                                int len, int ireason, int rw)
 {
+       ide_hwif_t *hwif = drive->hwif;
+
        /*
         * ireason == 0: the drive wants to receive data from us
         * ireason == 2: the drive is expecting to transfer data to us
@@ -640,21 +622,18 @@ static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq,
        if (ireason == (!rw << 1))
                return 0;
        else if (ireason == (rw << 1)) {
-               ide_hwif_t *hwif = drive->hwif;
-               xfer_func_t *xf;
 
                /* whoops... */
                printk(KERN_ERR "%s: %s: wrong transfer direction!\n",
                                drive->name, __func__);
 
-               xf = rw ? hwif->output_data : hwif->input_data;
-               ide_cd_pad_transfer(drive, xf, len);
+               ide_pad_transfer(drive, rw, len);
        } else  if (rw == 0 && ireason == 1) {
                /*
                 * Some drives (ASUS) seem to tell us that status info is
                 * available.  Just get it and ignore.
                 */
-               (void)ide_read_status(drive);
+               (void)hwif->tp_ops->read_status(hwif);
                return 0;
        } else {
                /* drive wants a command packet, or invalid ireason... */
@@ -675,20 +654,18 @@ static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq,
  */
 static int ide_cd_check_transfer_size(ide_drive_t *drive, int len)
 {
-       struct cdrom_info *cd = drive->driver_data;
-
        if ((len % SECTOR_SIZE) == 0)
                return 0;
 
        printk(KERN_ERR "%s: %s: Bad transfer size %d\n",
                        drive->name, __func__, len);
 
-       if (cd->cd_flags & IDE_CD_FLAG_LIMIT_NFRAMES)
+       if (drive->atapi_flags & IDE_AFLAG_LIMIT_NFRAMES)
                printk(KERN_ERR "  This drive is not supported by "
                                "this version of the driver\n");
        else {
                printk(KERN_ERR "  Trying to limit transfer sizes\n");
-               cd->cd_flags |= IDE_CD_FLAG_LIMIT_NFRAMES;
+               drive->atapi_flags |= IDE_AFLAG_LIMIT_NFRAMES;
        }
 
        return 1;
@@ -696,16 +673,9 @@ static int ide_cd_check_transfer_size(ide_drive_t *drive, int len)
 
 static ide_startstop_t cdrom_newpc_intr(ide_drive_t *);
 
-/*
- * Routine to send a read/write packet command to the drive. This is usually
- * called directly from cdrom_start_{read,write}(). However, for drq_interrupt
- * devices, it is called from an interrupt when the drive is ready to accept
- * the command.
- */
-static ide_startstop_t cdrom_start_rw_cont(ide_drive_t *drive)
+static ide_startstop_t ide_cd_prepare_rw_request(ide_drive_t *drive,
+                                                struct request *rq)
 {
-       struct request *rq = HWGROUP(drive)->rq;
-
        if (rq_data_dir(rq) == READ) {
                unsigned short sectors_per_frame =
                        queue_hardsect_size(drive->queue) >> SECTOR_BITS;
@@ -742,6 +712,19 @@ static ide_startstop_t cdrom_start_rw_cont(ide_drive_t *drive)
        /* set up the command */
        rq->timeout = ATAPI_WAIT_PC;
 
+       return ide_started;
+}
+
+/*
+ * Routine to send a read/write packet command to the drive. This is usually
+ * called directly from cdrom_start_{read,write}(). However, for drq_interrupt
+ * devices, it is called from an interrupt when the drive is ready to accept
+ * the command.
+ */
+static ide_startstop_t cdrom_start_rw_cont(ide_drive_t *drive)
+{
+       struct request *rq = drive->hwif->hwgroup->rq;
+
        /* send the command to the drive and return */
        return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr);
 }
@@ -759,7 +742,7 @@ static ide_startstop_t cdrom_seek_intr(ide_drive_t *drive)
        if (cdrom_decode_status(drive, 0, &stat))
                return ide_stopped;
 
-       info->cd_flags |= IDE_CD_FLAG_SEEKING;
+       drive->atapi_flags |= IDE_AFLAG_SEEKING;
 
        if (retry && time_after(jiffies, info->start_seek + IDECD_SEEK_TIMER)) {
                if (--retry == 0)
@@ -768,9 +751,8 @@ static ide_startstop_t cdrom_seek_intr(ide_drive_t *drive)
        return ide_stopped;
 }
 
-static ide_startstop_t cdrom_start_seek_continuation(ide_drive_t *drive)
+static void ide_cd_prepare_seek_request(ide_drive_t *drive, struct request *rq)
 {
-       struct request *rq = HWGROUP(drive)->rq;
        sector_t frame = rq->sector;
 
        sector_div(frame, queue_hardsect_size(drive->queue) >> SECTOR_BITS);
@@ -780,17 +762,13 @@ static ide_startstop_t cdrom_start_seek_continuation(ide_drive_t *drive)
        put_unaligned(cpu_to_be32(frame), (unsigned int *) &rq->cmd[2]);
 
        rq->timeout = ATAPI_WAIT_PC;
-       return cdrom_transfer_packet_command(drive, rq, &cdrom_seek_intr);
 }
 
-static ide_startstop_t cdrom_start_seek(ide_drive_t *drive, unsigned int block)
+static ide_startstop_t cdrom_start_seek_continuation(ide_drive_t *drive)
 {
-       struct cdrom_info *info = drive->driver_data;
+       struct request *rq = drive->hwif->hwgroup->rq;
 
-       info->dma = 0;
-       info->start_seek = jiffies;
-       return cdrom_start_packet_command(drive, 0,
-                                         cdrom_start_seek_continuation);
+       return cdrom_transfer_packet_command(drive, rq, &cdrom_seek_intr);
 }
 
 /*
@@ -921,10 +899,11 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
        struct request *rq = HWGROUP(drive)->rq;
        xfer_func_t *xferfunc;
        ide_expiry_t *expiry = NULL;
-       int dma_error = 0, dma, stat, ireason, len, thislen, uptodate = 0;
+       int dma_error = 0, dma, stat, thislen, uptodate = 0;
        int write = (rq_data_dir(rq) == WRITE) ? 1 : 0;
        unsigned int timeout;
-       u8 lowcyl, highcyl;
+       u16 len;
+       u8 ireason;
 
        /* check for errors */
        dma = info->dma;
@@ -952,19 +931,14 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
                goto end_request;
        }
 
-       /* ok we fall to pio :/ */
-       ireason = hwif->INB(hwif->io_ports.nsect_addr) & 0x3;
-       lowcyl  = hwif->INB(hwif->io_ports.lbam_addr);
-       highcyl = hwif->INB(hwif->io_ports.lbah_addr);
-
-       len = lowcyl + (256 * highcyl);
+       ide_read_bcount_and_ireason(drive, &len, &ireason);
 
        thislen = blk_fs_request(rq) ? len : rq->data_len;
        if (thislen > len)
                thislen = len;
 
        /* If DRQ is clear, the command has completed. */
-       if ((stat & DRQ_STAT) == 0) {
+       if ((stat & ATA_DRQ) == 0) {
                if (blk_fs_request(rq)) {
                        /*
                         * If we're not done reading/writing, complain.
@@ -1011,7 +985,7 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
                                           - bio_cur_sectors(rq->bio),
                                           thislen >> 9);
                        if (nskip > 0) {
-                               ide_cd_drain_data(drive, nskip);
+                               ide_pad_transfer(drive, write, nskip << 9);
                                rq->current_nr_sectors -= nskip;
                                thislen -= (nskip << 9);
                        }
@@ -1020,10 +994,10 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
 
        if (ireason == 0) {
                write = 1;
-               xferfunc = hwif->output_data;
+               xferfunc = hwif->tp_ops->output_data;
        } else {
                write = 0;
-               xferfunc = hwif->input_data;
+               xferfunc = hwif->tp_ops->input_data;
        }
 
        /* transfer data */
@@ -1048,7 +1022,7 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
                                 * If the buffers are full, pipe the rest into
                                 * oblivion.
                                 */
-                               ide_cd_drain_data(drive, thislen >> 9);
+                               ide_pad_transfer(drive, 0, thislen);
                        else {
                                printk(KERN_ERR "%s: confused, missing data\n",
                                                drive->name);
@@ -1096,7 +1070,7 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
 
        /* pad, if necessary */
        if (!blk_fs_request(rq) && len > 0)
-               ide_cd_pad_transfer(drive, xferfunc, len);
+               ide_pad_transfer(drive, write, len);
 
        if (blk_pc_request(rq)) {
                timeout = rq->timeout;
@@ -1139,7 +1113,7 @@ static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq)
 
        if (write) {
                /* disk has become write protected */
-               if (cd->disk->policy) {
+               if (get_disk_ro(cd->disk)) {
                        cdrom_end_request(drive, 0);
                        return ide_stopped;
                }
@@ -1165,21 +1139,17 @@ static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq)
        if (write)
                cd->devinfo.media_written = 1;
 
-       /* start sending the read/write request to the drive */
-       return cdrom_start_packet_command(drive, 32768, cdrom_start_rw_cont);
+       return ide_started;
 }
 
 static ide_startstop_t cdrom_do_newpc_cont(ide_drive_t *drive)
 {
        struct request *rq = HWGROUP(drive)->rq;
 
-       if (!rq->timeout)
-               rq->timeout = ATAPI_WAIT_PC;
-
        return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr);
 }
 
-static ide_startstop_t cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
+static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
 {
        struct cdrom_info *info = drive->driver_data;
 
@@ -1191,10 +1161,15 @@ static ide_startstop_t cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
        info->dma = 0;
 
        /* sg request */
-       if (rq->bio) {
-               int mask = drive->queue->dma_alignment;
-               unsigned long addr =
-                       (unsigned long)page_address(bio_page(rq->bio));
+       if (rq->bio || ((rq->cmd_type == REQ_TYPE_ATA_PC) && rq->data_len)) {
+               struct request_queue *q = drive->queue;
+               unsigned int alignment;
+               char *buf;
+
+               if (rq->bio)
+                       buf = bio_data(rq->bio);
+               else
+                       buf = rq->data;
 
                info->dma = drive->using_dma;
 
@@ -1204,30 +1179,30 @@ static ide_startstop_t cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
                 * NOTE! The "len" and "addr" checks should possibly have
                 * separate masks.
                 */
-               if ((rq->data_len & 15) || (addr & mask))
+               alignment = queue_dma_alignment(q) | q->dma_pad_mask;
+               if ((unsigned long)buf & alignment || rq->data_len & alignment
+                   || object_is_on_stack(buf))
                        info->dma = 0;
        }
-
-       /* start sending the command to the drive */
-       return cdrom_start_packet_command(drive, rq->data_len,
-                                         cdrom_do_newpc_cont);
 }
 
 /*
  * cdrom driver request routine.
  */
-static ide_startstop_t ide_do_rw_cdrom(ide_drive_t *drive, struct request *rq,
+static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
                                        sector_t block)
 {
-       ide_startstop_t action;
        struct cdrom_info *info = drive->driver_data;
+       ide_handler_t *fn;
+       int xferlen;
 
        if (blk_fs_request(rq)) {
-               if (info->cd_flags & IDE_CD_FLAG_SEEKING) {
+               if (drive->atapi_flags & IDE_AFLAG_SEEKING) {
+                       ide_hwif_t *hwif = drive->hwif;
                        unsigned long elapsed = jiffies - info->start_seek;
-                       int stat = ide_read_status(drive);
+                       int stat = hwif->tp_ops->read_status(hwif);
 
-                       if ((stat & SEEK_STAT) != SEEK_STAT) {
+                       if ((stat & ATA_DSC) != ATA_DSC) {
                                if (elapsed < IDECD_SEEK_TIMEOUT) {
                                        ide_stall_queue(drive,
                                                        IDECD_SEEK_TIMER);
@@ -1236,33 +1211,52 @@ static ide_startstop_t ide_do_rw_cdrom(ide_drive_t *drive, struct request *rq,
                                printk(KERN_ERR "%s: DSC timeout\n",
                                                drive->name);
                        }
-                       info->cd_flags &= ~IDE_CD_FLAG_SEEKING;
+                       drive->atapi_flags &= ~IDE_AFLAG_SEEKING;
                }
                if (rq_data_dir(rq) == READ &&
                    IDE_LARGE_SEEK(info->last_block, block,
-                                  IDECD_SEEK_THRESHOLD) &&
-                   drive->dsc_overlap)
-                       action = cdrom_start_seek(drive, block);
-               else
-                       action = cdrom_start_rw(drive, rq);
+                           IDECD_SEEK_THRESHOLD) &&
+                   drive->dsc_overlap) {
+                       xferlen = 0;
+                       fn = cdrom_start_seek_continuation;
+
+                       info->dma = 0;
+                       info->start_seek = jiffies;
+
+                       ide_cd_prepare_seek_request(drive, rq);
+               } else {
+                       xferlen = 32768;
+                       fn = cdrom_start_rw_cont;
+
+                       if (cdrom_start_rw(drive, rq) == ide_stopped)
+                               return ide_stopped;
+
+                       if (ide_cd_prepare_rw_request(drive, rq) == ide_stopped)
+                               return ide_stopped;
+               }
                info->last_block = block;
-               return action;
        } else if (blk_sense_request(rq) || blk_pc_request(rq) ||
                   rq->cmd_type == REQ_TYPE_ATA_PC) {
-               return cdrom_do_block_pc(drive, rq);
+               xferlen = rq->data_len;
+               fn = cdrom_do_newpc_cont;
+
+               if (!rq->timeout)
+                       rq->timeout = ATAPI_WAIT_PC;
+
+               cdrom_do_block_pc(drive, rq);
        } else if (blk_special_request(rq)) {
                /* right now this can only be a reset... */
                cdrom_end_request(drive, 1);
                return ide_stopped;
+       } else {
+               blk_dump_rq_flags(rq, "ide-cd bad flags");
+               cdrom_end_request(drive, 0);
+               return ide_stopped;
        }
 
-       blk_dump_rq_flags(rq, "ide-cd bad flags");
-       cdrom_end_request(drive, 0);
-       return ide_stopped;
+       return cdrom_start_packet_command(drive, xferlen, fn);
 }
 
-
-
 /*
  * Ioctl handling.
  *
@@ -1274,9 +1268,9 @@ static ide_startstop_t ide_do_rw_cdrom(ide_drive_t *drive, struct request *rq,
  */
 static void msf_from_bcd(struct atapi_msf *msf)
 {
-       msf->minute = BCD2BIN(msf->minute);
-       msf->second = BCD2BIN(msf->second);
-       msf->frame  = BCD2BIN(msf->frame);
+       msf->minute = bcd2bin(msf->minute);
+       msf->second = bcd2bin(msf->second);
+       msf->frame  = bcd2bin(msf->frame);
 }
 
 int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense)
@@ -1294,7 +1288,7 @@ int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense)
         */
        cmd[7] = cdi->sanyo_slot % 3;
 
-       return ide_cd_queue_pc(drive, cmd, 0, NULL, 0, sense, 0, REQ_QUIET);
+       return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, sense, 0, REQ_QUIET);
 }
 
 static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
@@ -1302,26 +1296,45 @@ static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
                               struct request_sense *sense)
 {
        struct {
-               __u32 lba;
-               __u32 blocklen;
+               __be32 lba;
+               __be32 blocklen;
        } capbuf;
 
        int stat;
        unsigned char cmd[BLK_MAX_CDB];
        unsigned len = sizeof(capbuf);
+       u32 blocklen;
 
        memset(cmd, 0, BLK_MAX_CDB);
        cmd[0] = GPCMD_READ_CDVD_CAPACITY;
 
        stat = ide_cd_queue_pc(drive, cmd, 0, &capbuf, &len, sense, 0,
                               REQ_QUIET);
-       if (stat == 0) {
-               *capacity = 1 + be32_to_cpu(capbuf.lba);
-               *sectors_per_frame =
-                       be32_to_cpu(capbuf.blocklen) >> SECTOR_BITS;
+       if (stat)
+               return stat;
+
+       /*
+        * Sanity check the given block size
+        */
+       blocklen = be32_to_cpu(capbuf.blocklen);
+       switch (blocklen) {
+       case 512:
+       case 1024:
+       case 2048:
+       case 4096:
+               break;
+       default:
+               printk(KERN_ERR "%s: weird block size %u\n",
+                       drive->name, blocklen);
+               printk(KERN_ERR "%s: default to 2kb block size\n",
+                       drive->name);
+               blocklen = 2048;
+               break;
        }
 
-       return stat;
+       *capacity = 1 + be32_to_cpu(capbuf.lba);
+       *sectors_per_frame = blocklen >> SECTOR_BITS;
+       return 0;
 }
 
 static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag,
@@ -1375,7 +1388,7 @@ int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense)
         */
        (void) cdrom_check_status(drive, sense);
 
-       if (info->cd_flags & IDE_CD_FLAG_TOC_VALID)
+       if (drive->atapi_flags & IDE_AFLAG_TOC_VALID)
                return 0;
 
        /* try to get the total cdrom capacity and sector size */
@@ -1397,9 +1410,9 @@ int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense)
        if (stat)
                return stat;
 
-       if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) {
-               toc->hdr.first_track = BCD2BIN(toc->hdr.first_track);
-               toc->hdr.last_track  = BCD2BIN(toc->hdr.last_track);
+       if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
+               toc->hdr.first_track = bcd2bin(toc->hdr.first_track);
+               toc->hdr.last_track  = bcd2bin(toc->hdr.last_track);
        }
 
        ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
@@ -1438,9 +1451,9 @@ int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense)
                if (stat)
                        return stat;
 
-               if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) {
-                       toc->hdr.first_track = (u8)BIN2BCD(CDROM_LEADOUT);
-                       toc->hdr.last_track = (u8)BIN2BCD(CDROM_LEADOUT);
+               if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
+                       toc->hdr.first_track = (u8)bin2bcd(CDROM_LEADOUT);
+                       toc->hdr.last_track = (u8)bin2bcd(CDROM_LEADOUT);
                } else {
                        toc->hdr.first_track = CDROM_LEADOUT;
                        toc->hdr.last_track = CDROM_LEADOUT;
@@ -1452,15 +1465,15 @@ int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense)
 
        toc->hdr.toc_length = be16_to_cpu(toc->hdr.toc_length);
 
-       if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) {
-               toc->hdr.first_track = BCD2BIN(toc->hdr.first_track);
-               toc->hdr.last_track  = BCD2BIN(toc->hdr.last_track);
+       if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
+               toc->hdr.first_track = bcd2bin(toc->hdr.first_track);
+               toc->hdr.last_track  = bcd2bin(toc->hdr.last_track);
        }
 
        for (i = 0; i <= ntracks; i++) {
-               if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) {
-                       if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD)
-                               toc->ent[i].track = BCD2BIN(toc->ent[i].track);
+               if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
+                       if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD)
+                               toc->ent[i].track = bcd2bin(toc->ent[i].track);
                        msf_from_bcd(&toc->ent[i].addr.msf);
                }
                toc->ent[i].addr.lba = msf_to_lba(toc->ent[i].addr.msf.minute,
@@ -1482,7 +1495,7 @@ int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense)
                toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */
        }
 
-       if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) {
+       if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
                /* re-read multisession information using MSF format */
                stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp,
                                           sizeof(ms_tmp), sense);
@@ -1506,7 +1519,7 @@ int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense)
        }
 
        /* Remember that we've read this stuff. */
-       info->cd_flags |= IDE_CD_FLAG_TOC_VALID;
+       drive->atapi_flags |= IDE_AFLAG_TOC_VALID;
 
        return 0;
 }
@@ -1518,7 +1531,7 @@ int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf)
        struct packet_command cgc;
        int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE;
 
-       if ((info->cd_flags & IDE_CD_FLAG_FULL_CAPS_PAGE) == 0)
+       if ((drive->atapi_flags & IDE_AFLAG_FULL_CAPS_PAGE) == 0)
                size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE;
 
        init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN);
@@ -1536,15 +1549,12 @@ void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf)
        struct cdrom_info *cd = drive->driver_data;
        u16 curspeed, maxspeed;
 
-       curspeed = *(u16 *)&buf[8 + 14];
-       maxspeed = *(u16 *)&buf[8 +  8];
-
-       if (cd->cd_flags & IDE_CD_FLAG_LE_SPEED_FIELDS) {
-               curspeed = le16_to_cpu(curspeed);
-               maxspeed = le16_to_cpu(maxspeed);
+       if (drive->atapi_flags & IDE_AFLAG_LE_SPEED_FIELDS) {
+               curspeed = le16_to_cpup((__le16 *)&buf[8 + 14]);
+               maxspeed = le16_to_cpup((__le16 *)&buf[8 + 8]);
        } else {
-               curspeed = be16_to_cpu(curspeed);
-               maxspeed = be16_to_cpu(maxspeed);
+               curspeed = be16_to_cpup((__be16 *)&buf[8 + 14]);
+               maxspeed = be16_to_cpup((__be16 *)&buf[8 + 8]);
        }
 
        cd->current_speed = (curspeed + (176/2)) / 176;
@@ -1585,7 +1595,7 @@ static int ide_cdrom_register(ide_drive_t *drive, int nslots)
        devinfo->handle = drive;
        strcpy(devinfo->name, drive->name);
 
-       if (info->cd_flags & IDE_CD_FLAG_NO_SPEED_SELECT)
+       if (drive->atapi_flags & IDE_AFLAG_NO_SPEED_SELECT)
                devinfo->mask |= CDC_SELECT_SPEED;
 
        devinfo->disk = info->disk;
@@ -1611,8 +1621,8 @@ static int ide_cdrom_probe_capabilities(ide_drive_t *drive)
                return nslots;
        }
 
-       if (cd->cd_flags & IDE_CD_FLAG_PRE_ATAPI12) {
-               cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT;
+       if (drive->atapi_flags & IDE_AFLAG_PRE_ATAPI12) {
+               drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
                cdi->mask &= ~CDC_PLAY_AUDIO;
                return nslots;
        }
@@ -1630,9 +1640,9 @@ static int ide_cdrom_probe_capabilities(ide_drive_t *drive)
                return 0;
 
        if ((buf[8 + 6] & 0x01) == 0)
-               cd->cd_flags |= IDE_CD_FLAG_NO_DOORLOCK;
+               drive->atapi_flags |= IDE_AFLAG_NO_DOORLOCK;
        if (buf[8 + 6] & 0x08)
-               cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT;
+               drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
        if (buf[8 + 3] & 0x01)
                cdi->mask &= ~CDC_CD_R;
        if (buf[8 + 3] & 0x02)
@@ -1643,11 +1653,13 @@ static int ide_cdrom_probe_capabilities(ide_drive_t *drive)
                cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM);
        if (buf[8 + 3] & 0x10)
                cdi->mask &= ~CDC_DVD_R;
-       if ((buf[8 + 4] & 0x01) || (cd->cd_flags & IDE_CD_FLAG_PLAY_AUDIO_OK))
+       if ((buf[8 + 4] & 0x01) || (drive->atapi_flags & IDE_AFLAG_PLAY_AUDIO_OK))
                cdi->mask &= ~CDC_PLAY_AUDIO;
 
        mechtype = buf[8 + 6] >> 5;
-       if (mechtype == mechtype_caddy || mechtype == mechtype_popup)
+       if (mechtype == mechtype_caddy ||
+           mechtype == mechtype_popup ||
+           (drive->atapi_flags & IDE_AFLAG_NO_AUTOCLOSE))
                cdi->mask |= CDC_CLOSE_TRAY;
 
        if (cdi->sanyo_slot > 0) {
@@ -1685,7 +1697,7 @@ static int ide_cdrom_probe_capabilities(ide_drive_t *drive)
        else
                printk(KERN_CONT " drive");
 
-       printk(KERN_CONT ", %dkB Cache\n", be16_to_cpu(*(u16 *)&buf[8 + 12]));
+       printk(KERN_CONT ", %dkB Cache\n", be16_to_cpup((__be16 *)&buf[8 + 12]));
 
        return nslots;
 }
@@ -1797,65 +1809,66 @@ static ide_proc_entry_t idecd_proc[] = {
        { NULL, 0, NULL, NULL }
 };
 
-static void ide_cdrom_add_settings(ide_drive_t *drive)
-{
-       ide_add_setting(drive, "dsc_overlap", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1,
-                       &drive->dsc_overlap, NULL);
-}
-#else
-static inline void ide_cdrom_add_settings(ide_drive_t *drive) { ; }
+ide_devset_rw_field(dsc_overlap, dsc_overlap);
+
+static const struct ide_proc_devset idecd_settings[] = {
+       IDE_PROC_DEVSET(dsc_overlap, 0, 1),
+       { 0 },
+};
 #endif
 
 static const struct cd_list_entry ide_cd_quirks_list[] = {
        /* Limit transfer size per interrupt. */
-       { "SAMSUNG CD-ROM SCR-2430", NULL,   IDE_CD_FLAG_LIMIT_NFRAMES      },
-       { "SAMSUNG CD-ROM SCR-2432", NULL,   IDE_CD_FLAG_LIMIT_NFRAMES      },
+       { "SAMSUNG CD-ROM SCR-2430", NULL,   IDE_AFLAG_LIMIT_NFRAMES         },
+       { "SAMSUNG CD-ROM SCR-2432", NULL,   IDE_AFLAG_LIMIT_NFRAMES         },
        /* SCR-3231 doesn't support the SET_CD_SPEED command. */
-       { "SAMSUNG CD-ROM SCR-3231", NULL,   IDE_CD_FLAG_NO_SPEED_SELECT    },
+       { "SAMSUNG CD-ROM SCR-3231", NULL,   IDE_AFLAG_NO_SPEED_SELECT       },
        /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */
-       { "NEC CD-ROM DRIVE:260",    "1.01", IDE_CD_FLAG_TOCADDR_AS_BCD |
-                                            IDE_CD_FLAG_PRE_ATAPI12,       },
+       { "NEC CD-ROM DRIVE:260",    "1.01", IDE_AFLAG_TOCADDR_AS_BCD |
+                                            IDE_AFLAG_PRE_ATAPI12,          },
        /* Vertos 300, some versions of this drive like to talk BCD. */
-       { "V003S0DS",                NULL,   IDE_CD_FLAG_VERTOS_300_SSD,    },
+       { "V003S0DS",                NULL,   IDE_AFLAG_VERTOS_300_SSD,       },
        /* Vertos 600 ESD. */
-       { "V006E0DS",                NULL,   IDE_CD_FLAG_VERTOS_600_ESD,    },
+       { "V006E0DS",                NULL,   IDE_AFLAG_VERTOS_600_ESD,       },
        /*
         * Sanyo 3 CD changer uses a non-standard command for CD changing
         * (by default standard ATAPI support for CD changers is used).
         */
-       { "CD-ROM CDR-C3 G",         NULL,   IDE_CD_FLAG_SANYO_3CD          },
-       { "CD-ROM CDR-C3G",          NULL,   IDE_CD_FLAG_SANYO_3CD          },
-       { "CD-ROM CDR_C36",          NULL,   IDE_CD_FLAG_SANYO_3CD          },
+       { "CD-ROM CDR-C3 G",         NULL,   IDE_AFLAG_SANYO_3CD             },
+       { "CD-ROM CDR-C3G",          NULL,   IDE_AFLAG_SANYO_3CD             },
+       { "CD-ROM CDR_C36",          NULL,   IDE_AFLAG_SANYO_3CD             },
        /* Stingray 8X CD-ROM. */
-       { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_CD_FLAG_PRE_ATAPI12},
+       { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_AFLAG_PRE_ATAPI12 },
        /*
         * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length
         * mode sense page capabilities size, but older drives break.
         */
-       { "ATAPI CD ROM DRIVE 50X MAX", NULL,   IDE_CD_FLAG_FULL_CAPS_PAGE  },
-       { "WPI CDS-32X",                NULL,   IDE_CD_FLAG_FULL_CAPS_PAGE  },
+       { "ATAPI CD ROM DRIVE 50X MAX", NULL,   IDE_AFLAG_FULL_CAPS_PAGE     },
+       { "WPI CDS-32X",                NULL,   IDE_AFLAG_FULL_CAPS_PAGE     },
        /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */
-       { "",                        "241N", IDE_CD_FLAG_LE_SPEED_FIELDS    },
+       { "",                        "241N", IDE_AFLAG_LE_SPEED_FIELDS       },
        /*
         * Some drives used by Apple don't advertise audio play
         * but they do support reading TOC & audio datas.
         */
-       { "MATSHITADVD-ROM SR-8187", NULL,   IDE_CD_FLAG_PLAY_AUDIO_OK      },
-       { "MATSHITADVD-ROM SR-8186", NULL,   IDE_CD_FLAG_PLAY_AUDIO_OK      },
-       { "MATSHITADVD-ROM SR-8176", NULL,   IDE_CD_FLAG_PLAY_AUDIO_OK      },
-       { "MATSHITADVD-ROM SR-8174", NULL,   IDE_CD_FLAG_PLAY_AUDIO_OK      },
-       { "Optiarc DVD RW AD-5200A", NULL,   IDE_CD_FLAG_PLAY_AUDIO_OK      },
+       { "MATSHITADVD-ROM SR-8187", NULL,   IDE_AFLAG_PLAY_AUDIO_OK         },
+       { "MATSHITADVD-ROM SR-8186", NULL,   IDE_AFLAG_PLAY_AUDIO_OK         },
+       { "MATSHITADVD-ROM SR-8176", NULL,   IDE_AFLAG_PLAY_AUDIO_OK         },
+       { "MATSHITADVD-ROM SR-8174", NULL,   IDE_AFLAG_PLAY_AUDIO_OK         },
+       { "Optiarc DVD RW AD-5200A", NULL,   IDE_AFLAG_PLAY_AUDIO_OK         },
+       { "Optiarc DVD RW AD-7200A", NULL,   IDE_AFLAG_PLAY_AUDIO_OK         },
+       { "Optiarc DVD RW AD-7543A", NULL,   IDE_AFLAG_NO_AUTOCLOSE          },
        { NULL, NULL, 0 }
 };
 
-static unsigned int ide_cd_flags(struct hd_driveid *id)
+static unsigned int ide_cd_flags(u16 *id)
 {
        const struct cd_list_entry *cle = ide_cd_quirks_list;
 
        while (cle->id_model) {
-               if (strcmp(cle->id_model, id->model) == 0 &&
+               if (strcmp(cle->id_model, (char *)&id[ATA_ID_PROD]) == 0 &&
                    (cle->id_firmware == NULL ||
-                    strstr(id->fw_rev, cle->id_firmware)))
+                    strstr((char *)&id[ATA_ID_FW_REV], cle->id_firmware)))
                        return cle->cd_flags;
                cle++;
        }
@@ -1867,31 +1880,33 @@ static int ide_cdrom_setup(ide_drive_t *drive)
 {
        struct cdrom_info *cd = drive->driver_data;
        struct cdrom_device_info *cdi = &cd->devinfo;
-       struct hd_driveid *id = drive->id;
+       u16 *id = drive->id;
+       char *fw_rev = (char *)&id[ATA_ID_FW_REV];
        int nslots;
 
        blk_queue_prep_rq(drive->queue, ide_cdrom_prep_fn);
        blk_queue_dma_alignment(drive->queue, 31);
+       blk_queue_update_dma_pad(drive->queue, 15);
        drive->queue->unplug_delay = (1 * HZ) / 1000;
        if (!drive->queue->unplug_delay)
                drive->queue->unplug_delay = 1;
 
        drive->special.all      = 0;
 
-       cd->cd_flags = IDE_CD_FLAG_MEDIA_CHANGED | IDE_CD_FLAG_NO_EJECT |
+       drive->atapi_flags = IDE_AFLAG_MEDIA_CHANGED | IDE_AFLAG_NO_EJECT |
                       ide_cd_flags(id);
 
-       if ((id->config & 0x0060) == 0x20)
-               cd->cd_flags |= IDE_CD_FLAG_DRQ_INTERRUPT;
-
-       if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_300_SSD) &&
-           id->fw_rev[4] == '1' && id->fw_rev[6] <= '2')
-               cd->cd_flags |= (IDE_CD_FLAG_TOCTRACKS_AS_BCD |
-                                IDE_CD_FLAG_TOCADDR_AS_BCD);
-       else if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_600_ESD) &&
-                id->fw_rev[4] == '1' && id->fw_rev[6] <= '2')
-               cd->cd_flags |= IDE_CD_FLAG_TOCTRACKS_AS_BCD;
-       else if (cd->cd_flags & IDE_CD_FLAG_SANYO_3CD)
+       if ((id[ATA_ID_CONFIG] & 0x0060) == 0x20)
+               drive->atapi_flags |= IDE_AFLAG_DRQ_INTERRUPT;
+
+       if ((drive->atapi_flags & IDE_AFLAG_VERTOS_300_SSD) &&
+           fw_rev[4] == '1' && fw_rev[6] <= '2')
+               drive->atapi_flags |= (IDE_AFLAG_TOCTRACKS_AS_BCD |
+                                    IDE_AFLAG_TOCADDR_AS_BCD);
+       else if ((drive->atapi_flags & IDE_AFLAG_VERTOS_600_ESD) &&
+                fw_rev[4] == '1' && fw_rev[6] <= '2')
+               drive->atapi_flags |= IDE_AFLAG_TOCTRACKS_AS_BCD;
+       else if (drive->atapi_flags & IDE_AFLAG_SANYO_3CD)
                /* 3 => use CD in slot 0 */
                cdi->sanyo_slot = 3;
 
@@ -1908,7 +1923,8 @@ static int ide_cdrom_setup(ide_drive_t *drive)
                cd->devinfo.handle = NULL;
                return 1;
        }
-       ide_cdrom_add_settings(drive);
+
+       ide_proc_register_driver(drive, cd->driver);
        return 0;
 }
 
@@ -1953,13 +1969,12 @@ static ide_driver_t ide_cdrom_driver = {
        .remove                 = ide_cd_remove,
        .version                = IDECD_VERSION,
        .media                  = ide_cdrom,
-       .supports_dsc_overlap   = 1,
-       .do_request             = ide_do_rw_cdrom,
+       .do_request             = ide_cd_do_request,
        .end_request            = ide_end_request,
        .error                  = __ide_error,
-       .abort                  = __ide_abort,
 #ifdef CONFIG_IDE_PROC_FS
        .proc                   = idecd_proc,
+       .settings               = idecd_settings,
 #endif
 };
 
@@ -2094,10 +2109,10 @@ static int ide_cd_probe(ide_drive_t *drive)
 
        if (!strstr("ide-cdrom", drive->driver_req))
                goto failed;
-       if (!drive->present)
-               goto failed;
+
        if (drive->media != ide_cdrom && drive->media != ide_optical)
                goto failed;
+
        /* skip drives that we were told to ignore */
        if (ignore != NULL) {
                if (strstr(ignore, drive->name)) {
@@ -2106,11 +2121,6 @@ static int ide_cd_probe(ide_drive_t *drive)
                        goto failed;
                }
        }
-       if (drive->scsi) {
-               printk(KERN_INFO "ide-cd: passing drive %s to ide-scsi "
-                                "emulation.\n", drive->name);
-               goto failed;
-       }
        info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL);
        if (info == NULL) {
                printk(KERN_ERR "%s: Can't allocate a cdrom structure\n",
@@ -2124,8 +2134,6 @@ static int ide_cd_probe(ide_drive_t *drive)
 
        ide_init_disk(g, drive);
 
-       ide_proc_register_driver(drive, &ide_cdrom_driver);
-
        kref_init(&info->kref);
 
        info->drive = drive;
@@ -2140,7 +2148,6 @@ static int ide_cd_probe(ide_drive_t *drive)
        g->driverfs_dev = &drive->gendev;
        g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE;
        if (ide_cdrom_setup(drive)) {
-               ide_proc_unregister_driver(drive, &ide_cdrom_driver);
                ide_cd_release(&info->kref);
                goto failed;
        }