1 files changed, 216 insertions, 115 deletions

diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index f16bb466723..3308b1cd3a3 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -23,6 +23,9 @@
  *	Documentation/ide/ChangeLog.ide-cd.1994-2004
  */
 
+#define DRV_NAME "ide-cd"
+#define PFX DRV_NAME ": "
+
 #define IDECD_VERSION "5.00"
 
 #include <linux/module.h>
@@ -50,12 +53,15 @@
 
 #include "ide-cd.h"
 
-static DEFINE_MUTEX(idecd_ref_mutex);
+#define IDECD_DEBUG_LOG		1
 
-#define to_ide_cd(obj) container_of(obj, struct cdrom_info, kref)
+#if IDECD_DEBUG_LOG
+#define ide_debug_log(lvl, fmt, args...) __ide_debug_log(lvl, fmt, args)
+#else
+#define ide_debug_log(lvl, fmt, args...) do {} while (0)
+#endif
 
-#define ide_cd_g(disk) \
-	container_of((disk)->private_data, struct cdrom_info, driver)
+static DEFINE_MUTEX(idecd_ref_mutex);
 
 static void ide_cd_release(struct kref *);
 
@@ -64,7 +70,7 @@ 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);
+	cd = ide_drv_g(disk, cdrom_info);
 	if (cd) {
 		if (ide_device_get(cd->drive))
 			cd = NULL;
@@ -102,6 +108,9 @@ static int cdrom_log_sense(ide_drive_t *drive, struct request *rq,
 {
 	int log = 0;
 
+	ide_debug_log(IDE_DBG_SENSE, "Call %s, sense_key: 0x%x\n", __func__,
+		      sense->sense_key);
+
 	if (!sense || !rq || (rq->cmd_flags & REQ_QUIET))
 		return 0;
 
@@ -150,6 +159,14 @@ static void cdrom_analyze_sense_data(ide_drive_t *drive,
 	unsigned long bio_sectors;
 	struct cdrom_info *info = drive->driver_data;
 
+	ide_debug_log(IDE_DBG_SENSE, "Call %s, error_code: 0x%x, "
+			"sense_key: 0x%x\n", __func__, sense->error_code,
+			sense->sense_key);
+
+	if (failed_command)
+		ide_debug_log(IDE_DBG_SENSE, "%s: failed cmd: 0x%x\n",
+				__func__, failed_command->cmd[0]);
+
 	if (!cdrom_log_sense(drive, failed_command, sense))
 		return;
 
@@ -200,6 +217,8 @@ static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense,
 	struct cdrom_info *info		= drive->driver_data;
 	struct request *rq		= &info->request_sense_request;
 
+	ide_debug_log(IDE_DBG_SENSE, "Call %s\n", __func__);
+
 	if (sense == NULL)
 		sense = &info->sense_data;
 
@@ -219,6 +238,10 @@ 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;
 
+	if (failed_command)
+		ide_debug_log(IDE_DBG_SENSE, "failed_cmd: 0x%x\n",
+			      failed_command->cmd[0]);
+
 	ide_do_drive_cmd(drive, rq);
 }
 
@@ -227,6 +250,10 @@ static void cdrom_end_request(ide_drive_t *drive, int uptodate)
 	struct request *rq = HWGROUP(drive)->rq;
 	int nsectors = rq->hard_cur_sectors;
 
+	ide_debug_log(IDE_DBG_FUNC, "Call %s, cmd: 0x%x, uptodate: 0x%x, "
+		      "nsectors: %d\n", __func__, rq->cmd[0], uptodate,
+		      nsectors);
+
 	if (blk_sense_request(rq) && uptodate) {
 		/*
 		 * For REQ_TYPE_SENSE, "rq->buffer" points to the original
@@ -269,6 +296,9 @@ static void cdrom_end_request(ide_drive_t *drive, int uptodate)
 	if (!nsectors)
 		nsectors = 1;
 
+	ide_debug_log(IDE_DBG_FUNC, "Exit %s, uptodate: 0x%x, nsectors: %d\n",
+		      __func__, uptodate, nsectors);
+
 	ide_end_request(drive, uptodate, nsectors);
 }
 
@@ -304,11 +334,15 @@ static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
 	sense_key = err >> 4;
 
 	if (rq == NULL) {
-		printk(KERN_ERR "%s: missing rq in %s\n",
+		printk(KERN_ERR PFX "%s: missing rq in %s\n",
 				drive->name, __func__);
 		return 1;
 	}
 
+	ide_debug_log(IDE_DBG_RQ, "%s: stat: 0x%x, good_stat: 0x%x, "
+		      "rq->cmd_type: 0x%x, err: 0x%x\n", __func__, stat,
+		      good_stat, rq->cmd_type, err);
+
 	if (blk_sense_request(rq)) {
 		/*
 		 * We got an error trying to get sense info from the drive
@@ -374,7 +408,8 @@ static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
 				cdrom_saw_media_change(drive);
 
 				/* fail the request */
-				printk(KERN_ERR "%s: tray open\n", drive->name);
+				printk(KERN_ERR PFX "%s: tray open\n",
+						drive->name);
 				do_end_request = 1;
 			} else {
 				struct cdrom_info *info = drive->driver_data;
@@ -436,7 +471,7 @@ 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;
@@ -457,10 +492,10 @@ 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");
+		blk_dump_rq_flags(rq, PFX "bad rq");
 		cdrom_end_request(drive, 0);
 	}
 
@@ -468,7 +503,7 @@ 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);
@@ -488,6 +523,9 @@ static int cdrom_timer_expiry(ide_drive_t *drive)
 	struct request *rq = HWGROUP(drive)->rq;
 	unsigned long wait = 0;
 
+	ide_debug_log(IDE_DBG_RQ, "Call %s: rq->cmd[0]: 0x%x\n", __func__,
+		      rq->cmd[0]);
+
 	/*
 	 * Some commands are *slow* and normally take a long time to complete.
 	 * Usually we can use the ATAPI "disconnect" to bypass this, but not all
@@ -504,7 +542,7 @@ static int cdrom_timer_expiry(ide_drive_t *drive)
 		break;
 	default:
 		if (!(rq->cmd_flags & REQ_QUIET))
-			printk(KERN_INFO "ide-cd: cmd 0x%x timed out\n",
+			printk(KERN_INFO PFX "cmd 0x%x timed out\n",
 					 rq->cmd[0]);
 		wait = 0;
 		break;
@@ -524,24 +562,25 @@ static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive,
 						  int xferlen,
 						  ide_handler_t *handler)
 {
-	struct cdrom_info *info = drive->driver_data;
 	ide_hwif_t *hwif = drive->hwif;
 
+	ide_debug_log(IDE_DBG_PC, "Call %s, xferlen: %d\n", __func__, xferlen);
+
 	/* FIXME: for Virtual DMA we must check harder */
-	if (info->dma)
-		info->dma = !hwif->dma_ops->dma_setup(drive);
+	if (drive->dma)
+		drive->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,
-			   xferlen, info->dma);
+			   xferlen, drive->dma);
 
 	if (drive->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT) {
 		/* waiting for CDB interrupt, not DMA yet. */
-		if (info->dma)
+		if (drive->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 {
@@ -564,9 +603,10 @@ static ide_startstop_t cdrom_transfer_packet_command(ide_drive_t *drive,
 {
 	ide_hwif_t *hwif = drive->hwif;
 	int cmd_len;
-	struct cdrom_info *info = drive->driver_data;
 	ide_startstop_t startstop;
 
+	ide_debug_log(IDE_DBG_PC, "Call %s\n", __func__);
+
 	if (drive->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT) {
 		/*
 		 * Here we should have been called after receiving an interrupt
@@ -574,16 +614,16 @@ static ide_startstop_t cdrom_transfer_packet_command(ide_drive_t *drive,
 		 */
 
 		/* 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 */
-		if (info->dma)
+		if (drive->dma)
 			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;
 	}
 
@@ -599,7 +639,7 @@ static ide_startstop_t cdrom_transfer_packet_command(ide_drive_t *drive,
 	hwif->tp_ops->output_data(drive, NULL, rq->cmd, cmd_len);
 
 	/* start the DMA if need be */
-	if (info->dma)
+	if (drive->dma)
 		hwif->dma_ops->dma_start(drive);
 
 	return ide_started;
@@ -615,6 +655,9 @@ static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq,
 {
 	ide_hwif_t *hwif = drive->hwif;
 
+	ide_debug_log(IDE_DBG_FUNC, "Call %s, ireason: 0x%x, rw: 0x%x\n",
+		      __func__, ireason, rw);
+
 	/*
 	 * ireason == 0: the drive wants to receive data from us
 	 * ireason == 2: the drive is expecting to transfer data to us
@@ -624,7 +667,7 @@ static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq,
 	else if (ireason == (rw << 1)) {
 
 		/* whoops... */
-		printk(KERN_ERR "%s: %s: wrong transfer direction!\n",
+		printk(KERN_ERR PFX "%s: %s: wrong transfer direction!\n",
 				drive->name, __func__);
 
 		ide_pad_transfer(drive, rw, len);
@@ -637,7 +680,7 @@ static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq,
 		return 0;
 	} else {
 		/* drive wants a command packet, or invalid ireason... */
-		printk(KERN_ERR "%s: %s: bad interrupt reason 0x%02x\n",
+		printk(KERN_ERR PFX "%s: %s: bad interrupt reason 0x%02x\n",
 				drive->name, __func__, ireason);
 	}
 
@@ -654,17 +697,19 @@ 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)
 {
+	ide_debug_log(IDE_DBG_FUNC, "Call %s, len: %d\n", __func__, len);
+
 	if ((len % SECTOR_SIZE) == 0)
 		return 0;
 
-	printk(KERN_ERR "%s: %s: Bad transfer size %d\n",
-			drive->name, __func__, len);
+	printk(KERN_ERR PFX "%s: %s: Bad transfer size %d\n", drive->name,
+			__func__, len);
 
 	if (drive->atapi_flags & IDE_AFLAG_LIMIT_NFRAMES)
-		printk(KERN_ERR "  This drive is not supported by "
-				"this version of the driver\n");
+		printk(KERN_ERR PFX "This drive is not supported by this "
+				"version of the driver\n");
 	else {
-		printk(KERN_ERR "  Trying to limit transfer sizes\n");
+		printk(KERN_ERR PFX "Trying to limit transfer sizes\n");
 		drive->atapi_flags |= IDE_AFLAG_LIMIT_NFRAMES;
 	}
 
@@ -676,6 +721,9 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *);
 static ide_startstop_t ide_cd_prepare_rw_request(ide_drive_t *drive,
 						 struct request *rq)
 {
+	ide_debug_log(IDE_DBG_RQ, "Call %s: rq->cmd_flags: 0x%x\n", __func__,
+		      rq->cmd_flags);
+
 	if (rq_data_dir(rq) == READ) {
 		unsigned short sectors_per_frame =
 			queue_hardsect_size(drive->queue) >> SECTOR_BITS;
@@ -695,7 +743,7 @@ static ide_startstop_t ide_cd_prepare_rw_request(ide_drive_t *drive,
 			/* sanity check... */
 			if (rq->current_nr_sectors !=
 			    bio_cur_sectors(rq->bio)) {
-				printk(KERN_ERR "%s: %s: buffer botch (%u)\n",
+				printk(KERN_ERR PFX "%s: %s: buffer botch (%u)\n",
 						drive->name, __func__,
 						rq->current_nr_sectors);
 				cdrom_end_request(drive, 0);
@@ -704,11 +752,7 @@ static ide_startstop_t ide_cd_prepare_rw_request(ide_drive_t *drive,
 			rq->current_nr_sectors += nskip;
 		}
 	}
-#if 0
-	else
-		/* the immediate bit */
-		rq->cmd[1] = 1 << 3;
-#endif
+
 	/* set up the command */
 	rq->timeout = ATAPI_WAIT_PC;
 
@@ -739,6 +783,8 @@ static ide_startstop_t cdrom_seek_intr(ide_drive_t *drive)
 	int stat;
 	static int retry = 10;
 
+	ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
+
 	if (cdrom_decode_status(drive, 0, &stat))
 		return ide_stopped;
 
@@ -746,7 +792,7 @@ static ide_startstop_t cdrom_seek_intr(ide_drive_t *drive)
 
 	if (retry && time_after(jiffies, info->start_seek + IDECD_SEEK_TIMER)) {
 		if (--retry == 0)
-			drive->dsc_overlap = 0;
+			drive->dev_flags &= ~IDE_DFLAG_DSC_OVERLAP;
 	}
 	return ide_stopped;
 }
@@ -755,6 +801,8 @@ static void ide_cd_prepare_seek_request(ide_drive_t *drive, struct request *rq)
 {
 	sector_t frame = rq->sector;
 
+	ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
+
 	sector_div(frame, queue_hardsect_size(drive->queue) >> SECTOR_BITS);
 
 	memset(rq->cmd, 0, BLK_MAX_CDB);
@@ -775,8 +823,11 @@ static ide_startstop_t cdrom_start_seek_continuation(ide_drive_t *drive)
  * Fix up a possibly partially-processed request so that we can start it over
  * entirely, or even put it back on the request queue.
  */
-static void restore_request(struct request *rq)
+static void ide_cd_restore_request(ide_drive_t *drive, struct request *rq)
 {
+
+	ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
+
 	if (rq->buffer != bio_data(rq->bio)) {
 		sector_t n =
 			(rq->buffer - (char *)bio_data(rq->bio)) / SECTOR_SIZE;
@@ -795,8 +846,11 @@ static void restore_request(struct request *rq)
 /*
  * All other packet commands.
  */
-static void ide_cd_request_sense_fixup(struct request *rq)
+static void ide_cd_request_sense_fixup(ide_drive_t *drive, struct request *rq)
 {
+
+	ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
+
 	/*
 	 * Some of the trailing request sense fields are optional,
 	 * and some drives don't send them.  Sigh.
@@ -822,6 +876,10 @@ int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
 	if (!sense)
 		sense = &local_sense;
 
+	ide_debug_log(IDE_DBG_PC, "Call %s, rq->cmd[0]: 0x%x, write: 0x%x, "
+		      "timeout: %d, cmd_flags: 0x%x\n", __func__, cmd[0], write,
+		      timeout, cmd_flags);
+
 	/* start of retry loop */
 	do {
 		struct request *rq;
@@ -895,7 +953,6 @@ static int cdrom_newpc_intr_dummy_cb(struct request *rq)
 static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
 {
 	ide_hwif_t *hwif = drive->hwif;
-	struct cdrom_info *info = drive->driver_data;
 	struct request *rq = HWGROUP(drive)->rq;
 	xfer_func_t *xferfunc;
 	ide_expiry_t *expiry = NULL;
@@ -905,13 +962,16 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
 	u16 len;
 	u8 ireason;
 
+	ide_debug_log(IDE_DBG_PC, "Call %s, rq->cmd[0]: 0x%x, write: 0x%x\n",
+		      __func__, rq->cmd[0], write);
+
 	/* check for errors */
-	dma = info->dma;
+	dma = drive->dma;
 	if (dma) {
-		info->dma = 0;
+		drive->dma = 0;
 		dma_error = hwif->dma_ops->dma_end(drive);
 		if (dma_error) {
-			printk(KERN_ERR "%s: DMA %s error\n", drive->name,
+			printk(KERN_ERR PFX "%s: DMA %s error\n", drive->name,
 					write ? "write" : "read");
 			ide_dma_off(drive);
 		}
@@ -937,8 +997,11 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
 	if (thislen > len)
 		thislen = len;
 
+	ide_debug_log(IDE_DBG_PC, "%s: DRQ: stat: 0x%x, thislen: %d\n",
+		      __func__, stat, thislen);
+
 	/* 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.
@@ -946,7 +1009,7 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
 			 */
 			uptodate = 1;
 			if (rq->current_nr_sectors > 0) {
-				printk(KERN_ERR "%s: %s: data underrun "
+				printk(KERN_ERR PFX "%s: %s: data underrun "
 						"(%d blocks)\n",
 						drive->name, __func__,
 						rq->current_nr_sectors);
@@ -957,7 +1020,7 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
 			cdrom_end_request(drive, uptodate);
 			return ide_stopped;
 		} else if (!blk_pc_request(rq)) {
-			ide_cd_request_sense_fixup(rq);
+			ide_cd_request_sense_fixup(drive, rq);
 			/* complain if we still have data left to transfer */
 			uptodate = rq->data_len ? 0 : 1;
 		}
@@ -1000,6 +1063,9 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
 		xferfunc = hwif->tp_ops->input_data;
 	}
 
+	ide_debug_log(IDE_DBG_PC, "%s: data transfer, rq->cmd_type: 0x%x, "
+		      "ireason: 0x%x\n", __func__, rq->cmd_type, ireason);
+
 	/* transfer data */
 	while (thislen > 0) {
 		u8 *ptr = blk_fs_request(rq) ? NULL : rq->data;
@@ -1024,7 +1090,7 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
 				 */
 				ide_pad_transfer(drive, 0, thislen);
 			else {
-				printk(KERN_ERR "%s: confused, missing data\n",
+				printk(KERN_ERR PFX "%s: confused, missing data\n",
 						drive->name);
 				blk_dump_rq_flags(rq, rq_data_dir(rq)
 						  ? "cdrom_newpc_intr, write"
@@ -1111,9 +1177,12 @@ static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq)
 	unsigned short sectors_per_frame =
 		queue_hardsect_size(drive->queue) >> SECTOR_BITS;
 
+	ide_debug_log(IDE_DBG_RQ, "Call %s, write: 0x%x, secs_per_frame: %u\n",
+		      __func__, write, sectors_per_frame);
+
 	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;
 		}
@@ -1122,7 +1191,7 @@ static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq)
 		 * We may be retrying this request after an error.  Fix up any
 		 * weirdness which might be present in the request packet.
 		 */
-		restore_request(rq);
+		ide_cd_restore_request(drive, rq);
 	}
 
 	/* use DMA, if possible / writes *must* be hardware frame aligned */
@@ -1132,9 +1201,9 @@ static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq)
 			cdrom_end_request(drive, 0);
 			return ide_stopped;
 		}
-		cd->dma = 0;
+		drive->dma = 0;
 	} else
-		cd->dma = drive->using_dma;
+		drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
 
 	if (write)
 		cd->devinfo.media_written = 1;
@@ -1151,28 +1220,29 @@ static ide_startstop_t cdrom_do_newpc_cont(ide_drive_t *drive)
 
 static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
 {
-	struct cdrom_info *info = drive->driver_data;
+
+	ide_debug_log(IDE_DBG_PC, "Call %s, rq->cmd_type: 0x%x\n", __func__,
+		      rq->cmd_type);
 
 	if (blk_pc_request(rq))
 		rq->cmd_flags |= REQ_QUIET;
 	else
 		rq->cmd_flags &= ~REQ_FAILED;
 
-	info->dma = 0;
+	drive->dma = 0;
 
 	/* sg request */
 	if (rq->bio || ((rq->cmd_type == REQ_TYPE_ATA_PC) && rq->data_len)) {
 		struct request_queue *q = drive->queue;
 		unsigned int alignment;
-		unsigned long addr;
-		unsigned long stack_mask = ~(THREAD_SIZE - 1);
+		char *buf;
 
 		if (rq->bio)
-			addr = (unsigned long)bio_data(rq->bio);
+			buf = bio_data(rq->bio);
 		else
-			addr = (unsigned long)rq->data;
+			buf = rq->data;
 
-		info->dma = drive->using_dma;
+		drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
 
 		/*
 		 * check if dma is safe
@@ -1181,12 +1251,9 @@ static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
 		 * separate masks.
 		 */
 		alignment = queue_dma_alignment(q) | q->dma_pad_mask;
-		if (addr & alignment || rq->data_len & alignment)
-			info->dma = 0;
-
-		if (!((addr & stack_mask) ^
-		      ((unsigned long)current->stack & stack_mask)))
-			info->dma = 0;
+		if ((unsigned long)buf & alignment || rq->data_len & alignment
+		    || object_is_on_stack(buf))
+			drive->dma = 0;
 	}
 }
 
@@ -1200,19 +1267,22 @@ static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
 	ide_handler_t *fn;
 	int xferlen;
 
+	ide_debug_log(IDE_DBG_RQ, "Call %s, rq->cmd_type: 0x%x, block: %llu\n",
+		      __func__, rq->cmd_type, (unsigned long long)block);
+
 	if (blk_fs_request(rq)) {
 		if (drive->atapi_flags & IDE_AFLAG_SEEKING) {
 			ide_hwif_t *hwif = drive->hwif;
 			unsigned long elapsed = jiffies - info->start_seek;
 			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);
 					return ide_stopped;
 				}
-				printk(KERN_ERR "%s: DSC timeout\n",
+				printk(KERN_ERR PFX "%s: DSC timeout\n",
 						drive->name);
 			}
 			drive->atapi_flags &= ~IDE_AFLAG_SEEKING;
@@ -1220,11 +1290,11 @@ static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
 		if (rq_data_dir(rq) == READ &&
 		    IDE_LARGE_SEEK(info->last_block, block,
 			    IDECD_SEEK_THRESHOLD) &&
-		    drive->dsc_overlap) {
+		    (drive->dev_flags & IDE_DFLAG_DSC_OVERLAP)) {
 			xferlen = 0;
 			fn = cdrom_start_seek_continuation;
 
-			info->dma = 0;
+			drive->dma = 0;
 			info->start_seek = jiffies;
 
 			ide_cd_prepare_seek_request(drive, rq);
@@ -1253,7 +1323,7 @@ static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
 		cdrom_end_request(drive, 1);
 		return ide_stopped;
 	} else {
-		blk_dump_rq_flags(rq, "ide-cd bad flags");
+		blk_dump_rq_flags(rq, DRV_NAME " bad flags");
 		cdrom_end_request(drive, 0);
 		return ide_stopped;
 	}
@@ -1283,6 +1353,8 @@ int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense)
 	struct cdrom_device_info *cdi = &info->devinfo;
 	unsigned char cmd[BLK_MAX_CDB];
 
+	ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
+
 	memset(cmd, 0, BLK_MAX_CDB);
 	cmd[0] = GPCMD_TEST_UNIT_READY;
 
@@ -1309,6 +1381,8 @@ static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
 	unsigned len = sizeof(capbuf);
 	u32 blocklen;
 
+	ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
+
 	memset(cmd, 0, BLK_MAX_CDB);
 	cmd[0] = GPCMD_READ_CDVD_CAPACITY;
 
@@ -1328,10 +1402,10 @@ static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
 	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);
+		printk(KERN_ERR PFX "%s: weird block size %u\n",
+				drive->name, blocklen);
+		printk(KERN_ERR PFX "%s: default to 2kb block size\n",
+				drive->name);
 		blocklen = 2048;
 		break;
 	}
@@ -1347,6 +1421,8 @@ static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag,
 {
 	unsigned char cmd[BLK_MAX_CDB];
 
+	ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
+
 	memset(cmd, 0, BLK_MAX_CDB);
 
 	cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
@@ -1375,11 +1451,13 @@ int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense)
 	long last_written;
 	unsigned long sectors_per_frame = SECTORS_PER_FRAME;
 
+	ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
+
 	if (toc == NULL) {
 		/* try to allocate space */
 		toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL);
 		if (toc == NULL) {
-			printk(KERN_ERR "%s: No cdrom TOC buffer!\n",
+			printk(KERN_ERR PFX "%s: No cdrom TOC buffer!\n",
 					drive->name);
 			return -ENOMEM;
 		}
@@ -1535,6 +1613,8 @@ int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf)
 	struct packet_command cgc;
 	int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE;
 
+	ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
+
 	if ((drive->atapi_flags & IDE_AFLAG_FULL_CAPS_PAGE) == 0)
 		size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE;
 
@@ -1553,6 +1633,8 @@ void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf)
 	struct cdrom_info *cd = drive->driver_data;
 	u16 curspeed, maxspeed;
 
+	ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
+
 	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]);
@@ -1593,6 +1675,8 @@ static int ide_cdrom_register(ide_drive_t *drive, int nslots)
 	struct cdrom_info *info = drive->driver_data;
 	struct cdrom_device_info *devinfo = &info->devinfo;
 
+	ide_debug_log(IDE_DBG_PROBE, "Call %s, nslots: %d\n", __func__, nslots);
+
 	devinfo->ops = &ide_cdrom_dops;
 	devinfo->speed = info->current_speed;
 	devinfo->capacity = nslots;
@@ -1614,13 +1698,17 @@ static int ide_cdrom_probe_capabilities(ide_drive_t *drive)
 	mechtype_t mechtype;
 	int nslots = 1;
 
+	ide_debug_log(IDE_DBG_PROBE, "Call %s, drive->media: 0x%x, "
+		      "drive->atapi_flags: 0x%lx\n", __func__, drive->media,
+		      drive->atapi_flags);
+
 	cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R |
 		     CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO |
 		     CDC_MO_DRIVE | CDC_RAM);
 
 	if (drive->media == ide_optical) {
 		cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM);
-		printk(KERN_ERR "%s: ATAPI magneto-optical drive\n",
+		printk(KERN_ERR PFX "%s: ATAPI magneto-optical drive\n",
 				drive->name);
 		return nslots;
 	}
@@ -1678,7 +1766,7 @@ static int ide_cdrom_probe_capabilities(ide_drive_t *drive)
 
 	ide_cdrom_update_speed(drive, buf);
 
-	printk(KERN_INFO "%s: ATAPI", drive->name);
+	printk(KERN_INFO PFX "%s: ATAPI", drive->name);
 
 	/* don't print speed if the drive reported 0 */
 	if (cd->max_speed)
@@ -1701,7 +1789,8 @@ static int ide_cdrom_probe_capabilities(ide_drive_t *drive)
 	else
 		printk(KERN_CONT " drive");
 
-	printk(KERN_CONT ", %dkB Cache\n", be16_to_cpup((__be16 *)&buf[8 + 12]));
+	printk(KERN_CONT ", %dkB Cache\n",
+			 be16_to_cpup((__be16 *)&buf[8 + 12]));
 
 	return nslots;
 }
@@ -1813,13 +1902,12 @@ 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_flag(dsc_overlap, IDE_DFLAG_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[] = {
@@ -1866,14 +1954,14 @@ static const struct cd_list_entry ide_cd_quirks_list[] = {
 	{ 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++;
 	}
@@ -1885,9 +1973,12 @@ 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;
 
+	ide_debug_log(IDE_DBG_PROBE, "Call %s\n", __func__);
+
 	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);
@@ -1895,20 +1986,15 @@ static int ide_cdrom_setup(ide_drive_t *drive)
 	if (!drive->queue->unplug_delay)
 		drive->queue->unplug_delay = 1;
 
-	drive->special.all	= 0;
-
 	drive->atapi_flags = IDE_AFLAG_MEDIA_CHANGED | IDE_AFLAG_NO_EJECT |
 		       ide_cd_flags(id);
 
-	if ((id->config & 0x0060) == 0x20)
-		drive->atapi_flags |= IDE_AFLAG_DRQ_INTERRUPT;
-
 	if ((drive->atapi_flags & IDE_AFLAG_VERTOS_300_SSD) &&
-	    id->fw_rev[4] == '1' && id->fw_rev[6] <= '2')
+	    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) &&
-		 id->fw_rev[4] == '1' && id->fw_rev[6] <= '2')
+		 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 */
@@ -1919,15 +2005,19 @@ static int ide_cdrom_setup(ide_drive_t *drive)
 	/* set correct block size */
 	blk_queue_hardsect_size(drive->queue, CD_FRAMESIZE);
 
-	drive->dsc_overlap = (drive->next != drive);
+	if (drive->next != drive)
+		drive->dev_flags |= IDE_DFLAG_DSC_OVERLAP;
+	else
+		drive->dev_flags &= ~IDE_DFLAG_DSC_OVERLAP;
 
 	if (ide_cdrom_register(drive, nslots)) {
-		printk(KERN_ERR "%s: %s failed to register device with the"
+		printk(KERN_ERR PFX "%s: %s failed to register device with the"
 				" cdrom driver.\n", drive->name, __func__);
 		cd->devinfo.handle = NULL;
 		return 1;
 	}
-	ide_cdrom_add_settings(drive);
+
+	ide_proc_register_driver(drive, cd->driver);
 	return 0;
 }
 
@@ -1935,6 +2025,8 @@ static void ide_cd_remove(ide_drive_t *drive)
 {
 	struct cdrom_info *info = drive->driver_data;
 
+	ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
+
 	ide_proc_unregister_driver(drive, info->driver);
 
 	del_gendisk(info->disk);
@@ -1944,15 +2036,17 @@ static void ide_cd_remove(ide_drive_t *drive)
 
 static void ide_cd_release(struct kref *kref)
 {
-	struct cdrom_info *info = to_ide_cd(kref);
+	struct cdrom_info *info = to_ide_drv(kref, cdrom_info);
 	struct cdrom_device_info *devinfo = &info->devinfo;
 	ide_drive_t *drive = info->drive;
 	struct gendisk *g = info->disk;
 
+	ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
+
 	kfree(info->toc);
 	if (devinfo->handle == drive)
 		unregister_cdrom(devinfo);
-	drive->dsc_overlap = 0;
+	drive->dev_flags &= ~IDE_DFLAG_DSC_OVERLAP;
 	drive->driver_data = NULL;
 	blk_queue_prep_rq(drive->queue, NULL);
 	g->private_data = NULL;
@@ -1971,13 +2065,12 @@ static ide_driver_t ide_cdrom_driver = {
 	.probe			= ide_cd_probe,
 	.remove			= ide_cd_remove,
 	.version		= IDECD_VERSION,
-	.media			= ide_cdrom,
-	.supports_dsc_overlap	= 1,
 	.do_request		= ide_cd_do_request,
 	.end_request		= ide_end_request,
 	.error			= __ide_error,
 #ifdef CONFIG_IDE_PROC_FS
 	.proc			= idecd_proc,
+	.settings		= idecd_settings,
 #endif
 };
 
@@ -2002,7 +2095,7 @@ static int idecd_open(struct inode *inode, struct file *file)
 static int idecd_release(struct inode *inode, struct file *file)
 {
 	struct gendisk *disk = inode->i_bdev->bd_disk;
-	struct cdrom_info *info = ide_cd_g(disk);
+	struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
 
 	cdrom_release(&info->devinfo, file);
 
@@ -2054,7 +2147,7 @@ static int idecd_ioctl(struct inode *inode, struct file *file,
 			unsigned int cmd, unsigned long arg)
 {
 	struct block_device *bdev = inode->i_bdev;
-	struct cdrom_info *info = ide_cd_g(bdev->bd_disk);
+	struct cdrom_info *info = ide_drv_g(bdev->bd_disk, cdrom_info);
 	int err;
 
 	switch (cmd) {
@@ -2075,13 +2168,13 @@ static int idecd_ioctl(struct inode *inode, struct file *file,
 
 static int idecd_media_changed(struct gendisk *disk)
 {
-	struct cdrom_info *info = ide_cd_g(disk);
+	struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
 	return cdrom_media_changed(&info->devinfo);
 }
 
 static int idecd_revalidate_disk(struct gendisk *disk)
 {
-	struct cdrom_info *info = ide_cd_g(disk);
+	struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
 	struct request_sense sense;
 
 	ide_cd_read_toc(info->drive, &sense);
@@ -2100,8 +2193,11 @@ static struct block_device_operations idecd_ops = {
 
 /* module options */
 static char *ignore;
-
 module_param(ignore, charp, 0400);
+
+static unsigned long debug_mask;
+module_param(debug_mask, ulong, 0644);
+
 MODULE_DESCRIPTION("ATAPI CD-ROM Driver");
 
 static int ide_cd_probe(ide_drive_t *drive)
@@ -2110,23 +2206,30 @@ static int ide_cd_probe(ide_drive_t *drive)
 	struct gendisk *g;
 	struct request_sense sense;
 
+	ide_debug_log(IDE_DBG_PROBE, "Call %s, drive->driver_req: %s, "
+		      "drive->media: 0x%x\n", __func__, drive->driver_req,
+		      drive->media);
+
 	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)) {
-			printk(KERN_INFO "ide-cd: ignoring drive %s\n",
+			printk(KERN_INFO PFX "ignoring drive %s\n",
 					 drive->name);
 			goto failed;
 		}
 	}
+
+	drive->debug_mask = debug_mask;
+
 	info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL);
 	if (info == NULL) {
-		printk(KERN_ERR "%s: Can't allocate a cdrom structure\n",
+		printk(KERN_ERR PFX "%s: Can't allocate a cdrom structure\n",
 				drive->name);
 		goto failed;
 	}
@@ -2137,8 +2240,6 @@ 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;
@@ -2153,7 +2254,6 @@ 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;
 	}
@@ -2177,6 +2277,7 @@ static void __exit ide_cdrom_exit(void)
 
 static int __init ide_cdrom_init(void)
 {
+	printk(KERN_INFO DRV_NAME " driver " IDECD_VERSION "\n");
 	return driver_register(&ide_cdrom_driver.gen_driver);
 }