X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=drivers%2Fide%2Fide-floppy.c;h=3d8e6dd0f41e11f031e7dad1a1be1c434430cbf0;hb=e669e8179d364bb11ed51504e1a1c60830bff4c5;hp=5f133dfb541c5e7fe4c406ef8e0775eb8a70598a;hpb=5f3b28781cbc030351e2fa0712602afbea592aae;p=linux-2.6-omap-h63xx.git

diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
index 5f133dfb541..3d8e6dd0f41 100644
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -125,26 +125,10 @@ typedef struct ide_floppy_obj {
 	int wp;
 	/* Supports format progress report */
 	int srfp;
-	/* Status/Action flags */
-	unsigned long flags;
 } idefloppy_floppy_t;
 
 #define IDEFLOPPY_TICKS_DELAY	HZ/20	/* default delay for ZIP 100 (50ms) */
 
-/* Floppy flag bits values. */
-enum {
-	/* DRQ interrupt device */
-	IDEFLOPPY_FLAG_DRQ_INTERRUPT		= (1 <<	0),
-	/* Media may have changed */
-	IDEFLOPPY_FLAG_MEDIA_CHANGED		= (1 << 1),
-	/* Format in progress */
-	IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS	= (1 << 2),
-	/* Avoid commands not supported in Clik drive */
-	IDEFLOPPY_FLAG_CLIK_DRIVE		= (1 << 3),
-	/* Requires BH algorithm for packets */
-	IDEFLOPPY_FLAG_ZIP_DRIVE		= (1 << 4),
-};
-
 /* Defines for the MODE SENSE command */
 #define MODE_SENSE_CURRENT		0x00
 #define MODE_SENSE_CHANGEABLE		0x01
@@ -231,6 +215,7 @@ static int idefloppy_end_request(ide_drive_t *drive, int uptodate, int nsecs)
 static void ide_floppy_io_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc,
 				  unsigned int bcount, int direction)
 {
+	ide_hwif_t *hwif = drive->hwif;
 	struct request *rq = pc->rq;
 	struct req_iterator iter;
 	struct bio_vec *bvec;
@@ -246,9 +231,9 @@ static void ide_floppy_io_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc,
 
 		data = bvec_kmap_irq(bvec, &flags);
 		if (direction)
-			drive->hwif->atapi_output_bytes(drive, data, count);
+			hwif->tp_ops->output_data(drive, NULL, data, count);
 		else
-			drive->hwif->atapi_input_bytes(drive, data, count);
+			hwif->tp_ops->input_data(drive, NULL, data, count);
 		bvec_kunmap_irq(data, &flags);
 
 		bcount -= count;
@@ -261,10 +246,7 @@ static void ide_floppy_io_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc,
 	if (bcount) {
 		printk(KERN_ERR "%s: leftover data in %s, bcount == %d\n",
 				drive->name, __func__, bcount);
-		if (direction)
-			ide_atapi_write_zeros(drive, bcount);
-		else
-			ide_atapi_discard_data(drive, bcount);
+		ide_pad_transfer(drive, direction, bcount);
 	}
 }
 
@@ -288,11 +270,13 @@ static void idefloppy_queue_pc_head(ide_drive_t *drive, struct ide_atapi_pc *pc,
 {
 	struct ide_floppy_obj *floppy = drive->driver_data;
 
-	ide_init_drive_cmd(rq);
+	blk_rq_init(NULL, rq);
 	rq->buffer = (char *) pc;
 	rq->cmd_type = REQ_TYPE_SPECIAL;
+	rq->cmd_flags |= REQ_PREEMPT;
 	rq->rq_disk = floppy->disk;
-	(void) ide_do_drive_cmd(drive, rq, ide_preempt);
+	memcpy(rq->cmd, pc->c, 12);
+	ide_do_drive_cmd(drive, rq);
 }
 
 static struct ide_atapi_pc *idefloppy_next_pc_storage(ide_drive_t *drive)
@@ -313,61 +297,48 @@ static struct request *idefloppy_next_rq_storage(ide_drive_t *drive)
 	return (&floppy->rq_stack[floppy->rq_stack_index++]);
 }
 
-static void idefloppy_request_sense_callback(ide_drive_t *drive)
+static void ide_floppy_callback(ide_drive_t *drive)
 {
 	idefloppy_floppy_t *floppy = drive->driver_data;
-	u8 *buf = floppy->pc->buf;
+	struct ide_atapi_pc *pc = floppy->pc;
+	int uptodate = pc->error ? 0 : 1;
 
 	debug_log("Reached %s\n", __func__);
 
-	if (!floppy->pc->error) {
-		floppy->sense_key = buf[2] & 0x0F;
-		floppy->asc = buf[12];
-		floppy->ascq = buf[13];
-		floppy->progress_indication = buf[15] & 0x80 ?
-			(u16)get_unaligned((u16 *)&buf[16]) : 0x10000;
+	if (floppy->failed_pc == pc)
+		floppy->failed_pc = NULL;
 
-		if (floppy->failed_pc)
-			debug_log("pc = %x, sense key = %x, asc = %x,"
-					" ascq = %x\n",
-					floppy->failed_pc->c[0],
-					floppy->sense_key,
-					floppy->asc,
-					floppy->ascq);
-		else
-			debug_log("sense key = %x, asc = %x, ascq = %x\n",
-					floppy->sense_key,
-					floppy->asc,
-					floppy->ascq);
+	if (pc->c[0] == GPCMD_READ_10 || pc->c[0] == GPCMD_WRITE_10 ||
+	    (pc->rq && blk_pc_request(pc->rq)))
+		uptodate = 1; /* FIXME */
+	else if (pc->c[0] == GPCMD_REQUEST_SENSE) {
+		u8 *buf = floppy->pc->buf;
 
+		if (!pc->error) {
+			floppy->sense_key = buf[2] & 0x0F;
+			floppy->asc = buf[12];
+			floppy->ascq = buf[13];
+			floppy->progress_indication = buf[15] & 0x80 ?
+				(u16)get_unaligned((u16 *)&buf[16]) : 0x10000;
 
-		idefloppy_end_request(drive, 1, 0);
-	} else {
-		printk(KERN_ERR "Error in REQUEST SENSE itself - Aborting"
-				" request!\n");
-		idefloppy_end_request(drive, 0, 0);
-	}
-}
+			if (floppy->failed_pc)
+				debug_log("pc = %x, ", floppy->failed_pc->c[0]);
 
-/* General packet command callback function. */
-static void idefloppy_pc_callback(ide_drive_t *drive)
-{
-	idefloppy_floppy_t *floppy = drive->driver_data;
-
-	debug_log("Reached %s\n", __func__);
+			debug_log("sense key = %x, asc = %x, ascq = %x\n",
+				  floppy->sense_key, floppy->asc, floppy->ascq);
+		} else
+			printk(KERN_ERR "Error in REQUEST SENSE itself - "
+					"Aborting request!\n");
+	}
 
-	idefloppy_end_request(drive, floppy->pc->error ? 0 : 1, 0);
+	idefloppy_end_request(drive, uptodate, 0);
 }
 
 static void idefloppy_init_pc(struct ide_atapi_pc *pc)
 {
-	memset(pc->c, 0, 12);
-	pc->retries = 0;
-	pc->flags = 0;
-	pc->req_xfer = 0;
+	memset(pc, 0, sizeof(*pc));
 	pc->buf = pc->pc_buf;
 	pc->buf_size = IDEFLOPPY_PC_BUFFER_SIZE;
-	pc->idefloppy_callback = &idefloppy_pc_callback;
 }
 
 static void idefloppy_create_request_sense_cmd(struct ide_atapi_pc *pc)
@@ -376,7 +347,6 @@ static void idefloppy_create_request_sense_cmd(struct ide_atapi_pc *pc)
 	pc->c[0] = GPCMD_REQUEST_SENSE;
 	pc->c[4] = 255;
 	pc->req_xfer = 18;
-	pc->idefloppy_callback = &idefloppy_request_sense_callback;
 }
 
 /*
@@ -396,202 +366,45 @@ static void idefloppy_retry_pc(ide_drive_t *drive)
 }
 
 /* The usual interrupt handler called during a packet command. */
-static ide_startstop_t idefloppy_pc_intr (ide_drive_t *drive)
+static ide_startstop_t idefloppy_pc_intr(ide_drive_t *drive)
 {
 	idefloppy_floppy_t *floppy = drive->driver_data;
-	ide_hwif_t *hwif = drive->hwif;
-	struct ide_atapi_pc *pc = floppy->pc;
-	struct request *rq = pc->rq;
-	xfer_func_t *xferfunc;
-	unsigned int temp;
-	int dma_error = 0;
-	u16 bcount;
-	u8 stat, ireason;
-
-	debug_log("Reached %s interrupt handler\n", __func__);
-
-	if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) {
-		dma_error = hwif->ide_dma_end(drive);
-		if (dma_error) {
-			printk(KERN_ERR "%s: DMA %s error\n", drive->name,
-					rq_data_dir(rq) ? "write" : "read");
-			pc->flags |= PC_FLAG_DMA_ERROR;
-		} else {
-			pc->xferred = pc->req_xfer;
-			idefloppy_update_buffers(drive, pc);
-		}
-		debug_log("DMA finished\n");
-	}
 
-	/* Clear the interrupt */
-	stat = ide_read_status(drive);
-
-	/* No more interrupts */
-	if ((stat & DRQ_STAT) == 0) {
-		debug_log("Packet command completed, %d bytes transferred\n",
-				pc->xferred);
-		pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS;
-
-		local_irq_enable_in_hardirq();
-
-		if ((stat & ERR_STAT) || (pc->flags & PC_FLAG_DMA_ERROR)) {
-			/* Error detected */
-			debug_log("%s: I/O error\n", drive->name);
-			rq->errors++;
-			if (pc->c[0] == GPCMD_REQUEST_SENSE) {
-				printk(KERN_ERR "ide-floppy: I/O error in "
-					"request sense command\n");
-				return ide_do_reset(drive);
-			}
-			/* Retry operation */
-			idefloppy_retry_pc(drive);
-			/* queued, but not started */
-			return ide_stopped;
-		}
-		pc->error = 0;
-		if (floppy->failed_pc == pc)
-			floppy->failed_pc = NULL;
-		/* Command finished - Call the callback function */
-		pc->idefloppy_callback(drive);
-		return ide_stopped;
-	}
-
-	if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) {
-		pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS;
-		printk(KERN_ERR "ide-floppy: The floppy wants to issue "
-			"more interrupts in DMA mode\n");
-		ide_dma_off(drive);
-		return ide_do_reset(drive);
-	}
-
-	/* Get the number of bytes to transfer */
-	bcount = (hwif->INB(hwif->io_ports[IDE_BCOUNTH_OFFSET]) << 8) |
-		  hwif->INB(hwif->io_ports[IDE_BCOUNTL_OFFSET]);
-	/* on this interrupt */
-	ireason = hwif->INB(hwif->io_ports[IDE_IREASON_OFFSET]);
-
-	if (ireason & CD) {
-		printk(KERN_ERR "ide-floppy: CoD != 0 in %s\n", __func__);
-		return ide_do_reset(drive);
-	}
-	if (((ireason & IO) == IO) == !!(pc->flags & PC_FLAG_WRITING)) {
-		/* Hopefully, we will never get here */
-		printk(KERN_ERR "ide-floppy: We wanted to %s, ",
-				(ireason & IO) ? "Write" : "Read");
-		printk(KERN_ERR "but the floppy wants us to %s !\n",
-				(ireason & IO) ? "Read" : "Write");
-		return ide_do_reset(drive);
-	}
-	if (!(pc->flags & PC_FLAG_WRITING)) {
-		/* Reading - Check that we have enough space */
-		temp = pc->xferred + bcount;
-		if (temp > pc->req_xfer) {
-			if (temp > pc->buf_size) {
-				printk(KERN_ERR "ide-floppy: The floppy wants "
-					"to send us more data than expected "
-					"- discarding data\n");
-				ide_atapi_discard_data(drive, bcount);
-
-				ide_set_handler(drive,
-						&idefloppy_pc_intr,
-						IDEFLOPPY_WAIT_CMD,
-						NULL);
-				return ide_started;
-			}
-			debug_log("The floppy wants to send us more data than"
-					" expected - allowing transfer\n");
-		}
-	}
-	if (pc->flags & PC_FLAG_WRITING)
-		xferfunc = hwif->atapi_output_bytes;
-	else
-		xferfunc = hwif->atapi_input_bytes;
-
-	if (pc->buf)
-		xferfunc(drive, pc->cur_pos, bcount);
-	else
-		ide_floppy_io_buffers(drive, pc, bcount,
-				      !!(pc->flags & PC_FLAG_WRITING));
-
-	/* Update the current position */
-	pc->xferred += bcount;
-	pc->cur_pos += bcount;
-
-	/* And set the interrupt handler again */
-	ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL);
-	return ide_started;
+	return ide_pc_intr(drive, floppy->pc, idefloppy_pc_intr,
+			   IDEFLOPPY_WAIT_CMD, NULL, idefloppy_update_buffers,
+			   idefloppy_retry_pc, NULL, ide_floppy_io_buffers);
 }
 
-/*
- * This is the original routine that did the packet transfer.
- * It fails at high speeds on the Iomega ZIP drive, so there's a slower version
- * for that drive below. The algorithm is chosen based on drive type
- */
-static ide_startstop_t idefloppy_transfer_pc(ide_drive_t *drive)
-{
-	ide_hwif_t *hwif = drive->hwif;
-	ide_startstop_t startstop;
-	idefloppy_floppy_t *floppy = drive->driver_data;
-	u8 ireason;
-
-	if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) {
-		printk(KERN_ERR "ide-floppy: Strange, packet command "
-				"initiated yet DRQ isn't asserted\n");
-		return startstop;
-	}
-	ireason = hwif->INB(hwif->io_ports[IDE_IREASON_OFFSET]);
-	if ((ireason & CD) == 0 || (ireason & IO)) {
-		printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) while "
-				"issuing a packet command\n");
-		return ide_do_reset(drive);
-	}
-
-	/* Set the interrupt routine */
-	ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL);
-	/* Send the actual packet */
-	HWIF(drive)->atapi_output_bytes(drive, floppy->pc->c, 12);
-	return ide_started;
-}
-
-
 /*
  * What we have here is a classic case of a top half / bottom half interrupt
  * service routine. In interrupt mode, the device sends an interrupt to signal
  * that it is ready to receive a packet. However, we need to delay about 2-3
  * ticks before issuing the packet or we gets in trouble.
- *
- * So, follow carefully. transfer_pc1 is called as an interrupt (or directly).
- * In either case, when the device says it's ready for a packet, we schedule
- * the packet transfer to occur about 2-3 ticks later in transfer_pc2.
  */
-static int idefloppy_transfer_pc2(ide_drive_t *drive)
+static int idefloppy_transfer_pc(ide_drive_t *drive)
 {
 	idefloppy_floppy_t *floppy = drive->driver_data;
 
 	/* Send the actual packet */
-	HWIF(drive)->atapi_output_bytes(drive, floppy->pc->c, 12);
+	drive->hwif->tp_ops->output_data(drive, NULL, floppy->pc->c, 12);
+
 	/* Timeout for the packet command */
 	return IDEFLOPPY_WAIT_CMD;
 }
 
-static ide_startstop_t idefloppy_transfer_pc1(ide_drive_t *drive)
+
+/*
+ * Called as an interrupt (or directly). When the device says it's ready for a
+ * packet, we schedule the packet transfer to occur about 2-3 ticks later in
+ * transfer_pc.
+ */
+static ide_startstop_t idefloppy_start_pc_transfer(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif = drive->hwif;
 	idefloppy_floppy_t *floppy = drive->driver_data;
-	ide_startstop_t startstop;
-	u8 ireason;
+	struct ide_atapi_pc *pc = floppy->pc;
+	ide_expiry_t *expiry;
+	unsigned int timeout;
 
-	if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) {
-		printk(KERN_ERR "ide-floppy: Strange, packet command "
-				"initiated yet DRQ isn't asserted\n");
-		return startstop;
-	}
-	ireason = hwif->INB(hwif->io_ports[IDE_IREASON_OFFSET]);
-	if ((ireason & CD) == 0 || (ireason & IO)) {
-		printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) "
-				"while issuing a packet command\n");
-		return ide_do_reset(drive);
-	}
 	/*
 	 * The following delay solves a problem with ATAPI Zip 100 drives
 	 * where the Busy flag was apparently being deasserted before the
@@ -600,10 +413,15 @@ static ide_startstop_t idefloppy_transfer_pc1(ide_drive_t *drive)
 	 * 40 and 50msec work well. idefloppy_pc_intr will not be actually
 	 * used until after the packet is moved in about 50 msec.
 	 */
+	if (drive->atapi_flags & IDE_AFLAG_ZIP_DRIVE) {
+		timeout = floppy->ticks;
+		expiry = &idefloppy_transfer_pc;
+	} else {
+		timeout = IDEFLOPPY_WAIT_CMD;
+		expiry = NULL;
+	}
 
-	ide_set_handler(drive, &idefloppy_pc_intr, floppy->ticks,
-			&idefloppy_transfer_pc2);
-	return ide_started;
+	return ide_transfer_pc(drive, pc, idefloppy_pc_intr, timeout, expiry);
 }
 
 static void ide_floppy_report_error(idefloppy_floppy_t *floppy,
@@ -626,10 +444,6 @@ static ide_startstop_t idefloppy_issue_pc(ide_drive_t *drive,
 		struct ide_atapi_pc *pc)
 {
 	idefloppy_floppy_t *floppy = drive->driver_data;
-	ide_hwif_t *hwif = drive->hwif;
-	ide_handler_t *pkt_xfer_routine;
-	u16 bcount;
-	u8 dma;
 
 	if (floppy->failed_pc == NULL &&
 	    pc->c[0] != GPCMD_REQUEST_SENSE)
@@ -644,65 +458,16 @@ static ide_startstop_t idefloppy_issue_pc(ide_drive_t *drive,
 		pc->error = IDEFLOPPY_ERROR_GENERAL;
 
 		floppy->failed_pc = NULL;
-		pc->idefloppy_callback(drive);
+		drive->pc_callback(drive);
 		return ide_stopped;
 	}
 
 	debug_log("Retry number - %d\n", pc->retries);
 
 	pc->retries++;
-	/* We haven't transferred any data yet */
-	pc->xferred = 0;
-	pc->cur_pos = pc->buf;
-	bcount = min(pc->req_xfer, 63 * 1024);
-
-	if (pc->flags & PC_FLAG_DMA_ERROR) {
-		pc->flags &= ~PC_FLAG_DMA_ERROR;
-		ide_dma_off(drive);
-	}
-	dma = 0;
-
-	if ((pc->flags & PC_FLAG_DMA_RECOMMENDED) && drive->using_dma)
-		dma = !hwif->dma_setup(drive);
-
-	ide_pktcmd_tf_load(drive, IDE_TFLAG_NO_SELECT_MASK |
-			   IDE_TFLAG_OUT_DEVICE, bcount, dma);
-
-	if (dma) {
-		/* Begin DMA, if necessary */
-		pc->flags |= PC_FLAG_DMA_IN_PROGRESS;
-		hwif->dma_start(drive);
-	}
-
-	/* Can we transfer the packet when we get the interrupt or wait? */
-	if (floppy->flags & IDEFLOPPY_FLAG_ZIP_DRIVE) {
-		/* wait */
-		pkt_xfer_routine = &idefloppy_transfer_pc1;
-	} else {
-		/* immediate */
-		pkt_xfer_routine = &idefloppy_transfer_pc;
-	}
 
-	if (floppy->flags & IDEFLOPPY_FLAG_DRQ_INTERRUPT) {
-		/* Issue the packet command */
-		ide_execute_command(drive, WIN_PACKETCMD,
-				pkt_xfer_routine,
-				IDEFLOPPY_WAIT_CMD,
-				NULL);
-		return ide_started;
-	} else {
-		/* Issue the packet command */
-		hwif->OUTB(WIN_PACKETCMD, hwif->io_ports[IDE_COMMAND_OFFSET]);
-		return (*pkt_xfer_routine) (drive);
-	}
-}
-
-static void idefloppy_rw_callback(ide_drive_t *drive)
-{
-	debug_log("Reached %s\n", __func__);
-
-	idefloppy_end_request(drive, 1, 0);
-	return;
+	return ide_issue_pc(drive, pc, idefloppy_start_pc_transfer,
+			    IDEFLOPPY_WAIT_CMD, NULL);
 }
 
 static void idefloppy_create_prevent_cmd(struct ide_atapi_pc *pc, int prevent)
@@ -777,12 +542,6 @@ static void idefloppy_create_start_stop_cmd(struct ide_atapi_pc *pc, int start)
 	pc->c[4] = start;
 }
 
-static void idefloppy_create_test_unit_ready_cmd(struct ide_atapi_pc *pc)
-{
-	idefloppy_init_pc(pc);
-	pc->c[0] = GPCMD_TEST_UNIT_READY;
-}
-
 static void idefloppy_create_rw_cmd(idefloppy_floppy_t *floppy,
 				    struct ide_atapi_pc *pc, struct request *rq,
 				    unsigned long sector)
@@ -799,21 +558,21 @@ static void idefloppy_create_rw_cmd(idefloppy_floppy_t *floppy,
 	put_unaligned(cpu_to_be16(blocks), (unsigned short *)&pc->c[7]);
 	put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[2]);
 
-	pc->idefloppy_callback = &idefloppy_rw_callback;
+	memcpy(rq->cmd, pc->c, 12);
+
 	pc->rq = rq;
 	pc->b_count = cmd == READ ? 0 : rq->bio->bi_size;
 	if (rq->cmd_flags & REQ_RW)
 		pc->flags |= PC_FLAG_WRITING;
 	pc->buf = NULL;
 	pc->req_xfer = pc->buf_size = blocks * floppy->block_size;
-	pc->flags |= PC_FLAG_DMA_RECOMMENDED;
+	pc->flags |= PC_FLAG_DMA_OK;
 }
 
 static void idefloppy_blockpc_cmd(idefloppy_floppy_t *floppy,
 		struct ide_atapi_pc *pc, struct request *rq)
 {
 	idefloppy_init_pc(pc);
-	pc->idefloppy_callback = &idefloppy_rw_callback;
 	memcpy(pc->c, rq->cmd, sizeof(pc->c));
 	pc->rq = rq;
 	pc->b_count = rq->data_len;
@@ -821,7 +580,7 @@ static void idefloppy_blockpc_cmd(idefloppy_floppy_t *floppy,
 		pc->flags |= PC_FLAG_WRITING;
 	pc->buf = rq->data;
 	if (rq->bio)
-		pc->flags |= PC_FLAG_DMA_RECOMMENDED;
+		pc->flags |= PC_FLAG_DMA_OK;
 	/*
 	 * possibly problematic, doesn't look like ide-floppy correctly
 	 * handled scattered requests if dma fails...
@@ -875,6 +634,7 @@ static ide_startstop_t idefloppy_do_request(ide_drive_t *drive,
 	}
 
 	pc->rq = rq;
+
 	return idefloppy_issue_pc(drive, pc);
 }
 
@@ -885,14 +645,17 @@ static ide_startstop_t idefloppy_do_request(ide_drive_t *drive,
 static int idefloppy_queue_pc_tail(ide_drive_t *drive, struct ide_atapi_pc *pc)
 {
 	struct ide_floppy_obj *floppy = drive->driver_data;
-	struct request rq;
+	struct request *rq;
+	int error;
 
-	ide_init_drive_cmd(&rq);
-	rq.buffer = (char *) pc;
-	rq.cmd_type = REQ_TYPE_SPECIAL;
-	rq.rq_disk = floppy->disk;
+	rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
+	rq->buffer = (char *) pc;
+	rq->cmd_type = REQ_TYPE_SPECIAL;
+	memcpy(rq->cmd, pc->c, 12);
+	error = blk_execute_rq(drive->queue, floppy->disk, rq, 0);
+	blk_put_request(rq);
 
-	return ide_do_drive_cmd(drive, &rq, ide_wait);
+	return error;
 }
 
 /*
@@ -920,10 +683,10 @@ static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive)
 	set_disk_ro(floppy->disk, floppy->wp);
 	page = &pc.buf[8];
 
-	transfer_rate = be16_to_cpu(*(u16 *)&pc.buf[8 + 2]);
-	sector_size   = be16_to_cpu(*(u16 *)&pc.buf[8 + 6]);
-	cyls          = be16_to_cpu(*(u16 *)&pc.buf[8 + 8]);
-	rpm           = be16_to_cpu(*(u16 *)&pc.buf[8 + 28]);
+	transfer_rate = be16_to_cpup((__be16 *)&pc.buf[8 + 2]);
+	sector_size   = be16_to_cpup((__be16 *)&pc.buf[8 + 6]);
+	cyls          = be16_to_cpup((__be16 *)&pc.buf[8 + 8]);
+	rpm           = be16_to_cpup((__be16 *)&pc.buf[8 + 28]);
 	heads         = pc.buf[8 + 4];
 	sectors       = pc.buf[8 + 5];
 
@@ -998,8 +761,8 @@ static int ide_floppy_get_capacity(ide_drive_t *drive)
 	for (i = 0; i < desc_cnt; i++) {
 		unsigned int desc_start = 4 + i*8;
 
-		blocks = be32_to_cpu(*(u32 *)&pc.buf[desc_start]);
-		length = be16_to_cpu(*(u16 *)&pc.buf[desc_start + 6]);
+		blocks = be32_to_cpup((__be32 *)&pc.buf[desc_start]);
+		length = be16_to_cpup((__be16 *)&pc.buf[desc_start + 6]);
 
 		debug_log("Descriptor %d: %dkB, %d blocks, %d sector size\n",
 				i, blocks * length / 1024, blocks, length);
@@ -1013,7 +776,7 @@ static int ide_floppy_get_capacity(ide_drive_t *drive)
 		switch (pc.buf[desc_start + 4] & 0x03) {
 		/* Clik! drive returns this instead of CAPACITY_CURRENT */
 		case CAPACITY_UNFORMATTED:
-			if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE))
+			if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE))
 				/*
 				 * If it is not a clik drive, break out
 				 * (maintains previous driver behaviour)
@@ -1059,7 +822,7 @@ static int ide_floppy_get_capacity(ide_drive_t *drive)
 	}
 
 	/* Clik! disk does not support get_flexible_disk_page */
-	if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE))
+	if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE))
 		(void) ide_floppy_get_flexible_disk_page(drive);
 
 	set_capacity(floppy->disk, floppy->blocks * floppy->bs_factor);
@@ -1120,8 +883,8 @@ static int ide_floppy_get_format_capacities(ide_drive_t *drive, int __user *arg)
 		if (u_index >= u_array_size)
 			break;	/* User-supplied buffer too small */
 
-		blocks = be32_to_cpu(*(u32 *)&pc.buf[desc_start]);
-		length = be16_to_cpu(*(u16 *)&pc.buf[desc_start + 6]);
+		blocks = be32_to_cpup((__be32 *)&pc.buf[desc_start]);
+		length = be16_to_cpup((__be16 *)&pc.buf[desc_start + 6]);
 
 		if (put_user(blocks, argp))
 			return(-EFAULT);
@@ -1167,11 +930,12 @@ static int idefloppy_get_format_progress(ide_drive_t *drive, int __user *arg)
 
 		/* Else assume format_unit has finished, and we're at 0x10000 */
 	} else {
+		ide_hwif_t *hwif = drive->hwif;
 		unsigned long flags;
 		u8 stat;
 
 		local_irq_save(flags);
-		stat = ide_read_status(drive);
+		stat = hwif->tp_ops->read_status(hwif);
 		local_irq_restore(flags);
 
 		progress_indication = ((stat & SEEK_STAT) == 0) ? 0 : 0x10000;
@@ -1257,9 +1021,10 @@ static void idefloppy_setup(ide_drive_t *drive, idefloppy_floppy_t *floppy)
 
 	*((u16 *) &gcw) = drive->id->config;
 	floppy->pc = floppy->pc_stack;
+	drive->pc_callback = ide_floppy_callback;
 
 	if (((gcw[0] & 0x60) >> 5) == 1)
-		floppy->flags |= IDEFLOPPY_FLAG_DRQ_INTERRUPT;
+		drive->atapi_flags |= IDE_AFLAG_DRQ_INTERRUPT;
 	/*
 	 * We used to check revisions here. At this point however I'm giving up.
 	 * Just assume they are all broken, its easier.
@@ -1270,7 +1035,7 @@ static void idefloppy_setup(ide_drive_t *drive, idefloppy_floppy_t *floppy)
 	 * we'll leave the limitation below for the 2.2.x tree.
 	 */
 	if (!strncmp(drive->id->model, "IOMEGA ZIP 100 ATAPI", 20)) {
-		floppy->flags |= IDEFLOPPY_FLAG_ZIP_DRIVE;
+		drive->atapi_flags |= IDE_AFLAG_ZIP_DRIVE;
 		/* This value will be visible in the /proc/ide/hdx/settings */
 		floppy->ticks = IDEFLOPPY_TICKS_DELAY;
 		blk_queue_max_sectors(drive->queue, 64);
@@ -1282,7 +1047,7 @@ static void idefloppy_setup(ide_drive_t *drive, idefloppy_floppy_t *floppy)
 	 */
 	if (strncmp(drive->id->model, "IOMEGA Clik!", 11) == 0) {
 		blk_queue_max_sectors(drive->queue, 64);
-		floppy->flags |= IDEFLOPPY_FLAG_CLIK_DRIVE;
+		drive->atapi_flags |= IDE_AFLAG_CLIK_DRIVE;
 	}
 
 	(void) ide_floppy_get_capacity(drive);
@@ -1347,7 +1112,6 @@ static ide_driver_t idefloppy_driver = {
 	.do_request		= idefloppy_do_request,
 	.end_request		= idefloppy_end_request,
 	.error			= __ide_error,
-	.abort			= __ide_abort,
 #ifdef CONFIG_IDE_PROC_FS
 	.proc			= idefloppy_proc,
 #endif
@@ -1372,10 +1136,12 @@ static int idefloppy_open(struct inode *inode, struct file *filp)
 	floppy->openers++;
 
 	if (floppy->openers == 1) {
-		floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS;
+		drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS;
 		/* Just in case */
 
-		idefloppy_create_test_unit_ready_cmd(&pc);
+		idefloppy_init_pc(&pc);
+		pc.c[0] = GPCMD_TEST_UNIT_READY;
+
 		if (idefloppy_queue_pc_tail(drive, &pc)) {
 			idefloppy_create_start_stop_cmd(&pc, 1);
 			(void) idefloppy_queue_pc_tail(drive, &pc);
@@ -1397,14 +1163,14 @@ static int idefloppy_open(struct inode *inode, struct file *filp)
 			ret = -EROFS;
 			goto out_put_floppy;
 		}
-		floppy->flags |= IDEFLOPPY_FLAG_MEDIA_CHANGED;
+		drive->atapi_flags |= IDE_AFLAG_MEDIA_CHANGED;
 		/* IOMEGA Clik! drives do not support lock/unlock commands */
-		if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) {
+		if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) {
 			idefloppy_create_prevent_cmd(&pc, 1);
 			(void) idefloppy_queue_pc_tail(drive, &pc);
 		}
 		check_disk_change(inode->i_bdev);
-	} else if (floppy->flags & IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS) {
+	} else if (drive->atapi_flags & IDE_AFLAG_FORMAT_IN_PROGRESS) {
 		ret = -EBUSY;
 		goto out_put_floppy;
 	}
@@ -1427,12 +1193,12 @@ static int idefloppy_release(struct inode *inode, struct file *filp)
 
 	if (floppy->openers == 1) {
 		/* IOMEGA Clik! drives do not support lock/unlock commands */
-		if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) {
+		if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) {
 			idefloppy_create_prevent_cmd(&pc, 0);
 			(void) idefloppy_queue_pc_tail(drive, &pc);
 		}
 
-		floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS;
+		drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS;
 	}
 
 	floppy->openers--;
@@ -1453,15 +1219,17 @@ static int idefloppy_getgeo(struct block_device *bdev, struct hd_geometry *geo)
 	return 0;
 }
 
-static int ide_floppy_lockdoor(idefloppy_floppy_t *floppy,
-		struct ide_atapi_pc *pc, unsigned long arg, unsigned int cmd)
+static int ide_floppy_lockdoor(ide_drive_t *drive, struct ide_atapi_pc *pc,
+			       unsigned long arg, unsigned int cmd)
 {
+	idefloppy_floppy_t *floppy = drive->driver_data;
+
 	if (floppy->openers > 1)
 		return -EBUSY;
 
 	/* The IOMEGA Clik! Drive doesn't support this command -
 	 * no room for an eject mechanism */
-	if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) {
+	if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) {
 		int prevent = arg ? 1 : 0;
 
 		if (cmd == CDROMEJECT)
@@ -1482,16 +1250,17 @@ static int ide_floppy_lockdoor(idefloppy_floppy_t *floppy,
 static int ide_floppy_format_unit(idefloppy_floppy_t *floppy,
 				  int __user *arg)
 {
-	int blocks, length, flags, err = 0;
 	struct ide_atapi_pc pc;
+	ide_drive_t *drive = floppy->drive;
+	int blocks, length, flags, err = 0;
 
 	if (floppy->openers > 1) {
 		/* Don't format if someone is using the disk */
-		floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS;
+		drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS;
 		return -EBUSY;
 	}
 
-	floppy->flags |= IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS;
+	drive->atapi_flags |= IDE_AFLAG_FORMAT_IN_PROGRESS;
 
 	/*
 	 * Send ATAPI_FORMAT_UNIT to the drive.
@@ -1515,15 +1284,15 @@ static int ide_floppy_format_unit(idefloppy_floppy_t *floppy,
 		goto out;
 	}
 
-	(void) idefloppy_get_sfrp_bit(floppy->drive);
+	(void) idefloppy_get_sfrp_bit(drive);
 	idefloppy_create_format_unit_cmd(&pc, blocks, length, flags);
 
-	if (idefloppy_queue_pc_tail(floppy->drive, &pc))
+	if (idefloppy_queue_pc_tail(drive, &pc))
 		err = -EIO;
 
 out:
 	if (err)
-		floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS;
+		drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS;
 	return err;
 }
 
@@ -1542,7 +1311,7 @@ static int idefloppy_ioctl(struct inode *inode, struct file *file,
 	case CDROMEJECT:
 		/* fall through */
 	case CDROM_LOCKDOOR:
-		return ide_floppy_lockdoor(floppy, &pc, arg, cmd);
+		return ide_floppy_lockdoor(drive, &pc, arg, cmd);
 	case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED:
 		return 0;
 	case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY:
@@ -1583,8 +1352,8 @@ static int idefloppy_media_changed(struct gendisk *disk)
 		drive->attach = 0;
 		return 0;
 	}
-	ret = !!(floppy->flags & IDEFLOPPY_FLAG_MEDIA_CHANGED);
-	floppy->flags &= ~IDEFLOPPY_FLAG_MEDIA_CHANGED;
+	ret = !!(drive->atapi_flags & IDE_AFLAG_MEDIA_CHANGED);
+	drive->atapi_flags &= ~IDE_AFLAG_MEDIA_CHANGED;
 	return ret;
 }
 
@@ -1596,13 +1365,13 @@ static int idefloppy_revalidate_disk(struct gendisk *disk)
 }
 
 static struct block_device_operations idefloppy_ops = {
-	.owner		= THIS_MODULE,
-	.open		= idefloppy_open,
-	.release	= idefloppy_release,
-	.ioctl		= idefloppy_ioctl,
-	.getgeo		= idefloppy_getgeo,
-	.media_changed	= idefloppy_media_changed,
-	.revalidate_disk= idefloppy_revalidate_disk
+	.owner			= THIS_MODULE,
+	.open			= idefloppy_open,
+	.release		= idefloppy_release,
+	.ioctl			= idefloppy_ioctl,
+	.getgeo			= idefloppy_getgeo,
+	.media_changed		= idefloppy_media_changed,
+	.revalidate_disk	= idefloppy_revalidate_disk
 };
 
 static int ide_floppy_probe(ide_drive_t *drive)
@@ -1621,11 +1390,6 @@ static int ide_floppy_probe(ide_drive_t *drive)
 				" of ide-floppy\n", drive->name);
 		goto failed;
 	}
-	if (drive->scsi) {
-		printk(KERN_INFO "ide-floppy: passing drive %s to ide-scsi"
-				" emulation.\n", drive->name);
-		goto failed;
-	}
 	floppy = kzalloc(sizeof(idefloppy_floppy_t), GFP_KERNEL);
 	if (!floppy) {
 		printk(KERN_ERR "ide-floppy: %s: Can't allocate a floppy"