X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=drivers%2Fscsi%2Flibata-core.c;h=b046ffa22101ccb3c8cbc9c6d6453abd8ef20e4d;hb=cac925a4aab1b7233d3beb591f53498816058a08;hp=6fe41fb03929b6a355adf4775048f6d55120e519;hpb=1148c3a78aa9f1e84229cd17f94fd38a15ca65bd;p=safe%2Fjmp%2Flinux-2.6

diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index 6fe41fb..b046ffa 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -62,11 +62,13 @@
 #include "libata.h"
 
 static unsigned int ata_dev_init_params(struct ata_port *ap,
-					struct ata_device *dev);
+					struct ata_device *dev,
+					u16 heads,
+					u16 sectors);
 static void ata_set_mode(struct ata_port *ap);
-static void ata_dev_set_xfermode(struct ata_port *ap, struct ata_device *dev);
-static unsigned int ata_dev_xfermask(struct ata_port *ap,
-				     struct ata_device *dev);
+static unsigned int ata_dev_set_xfermode(struct ata_port *ap,
+					 struct ata_device *dev);
+static void ata_dev_xfermask(struct ata_port *ap, struct ata_device *dev);
 
 static unsigned int ata_unique_id = 1;
 static struct workqueue_struct *ata_wq;
@@ -190,7 +192,7 @@ static const u8 ata_rw_cmds[] = {
  *	ata_rwcmd_protocol - set taskfile r/w commands and protocol
  *	@qc: command to examine and configure
  *
- *	Examine the device configuration and tf->flags to calculate 
+ *	Examine the device configuration and tf->flags to calculate
  *	the proper read/write commands and protocol to use.
  *
  *	LOCKING:
@@ -203,7 +205,7 @@ int ata_rwcmd_protocol(struct ata_queued_cmd *qc)
 	u8 cmd;
 
 	int index, fua, lba48, write;
- 
+
 	fua = (tf->flags & ATA_TFLAG_FUA) ? 4 : 0;
 	lba48 = (tf->flags & ATA_TFLAG_LBA48) ? 2 : 0;
 	write = (tf->flags & ATA_TFLAG_WRITE) ? 1 : 0;
@@ -252,8 +254,31 @@ static unsigned int ata_pack_xfermask(unsigned int pio_mask,
 		((udma_mask << ATA_SHIFT_UDMA) & ATA_MASK_UDMA);
 }
 
+/**
+ *	ata_unpack_xfermask - Unpack xfer_mask into pio, mwdma and udma masks
+ *	@xfer_mask: xfer_mask to unpack
+ *	@pio_mask: resulting pio_mask
+ *	@mwdma_mask: resulting mwdma_mask
+ *	@udma_mask: resulting udma_mask
+ *
+ *	Unpack @xfer_mask into @pio_mask, @mwdma_mask and @udma_mask.
+ *	Any NULL distination masks will be ignored.
+ */
+static void ata_unpack_xfermask(unsigned int xfer_mask,
+				unsigned int *pio_mask,
+				unsigned int *mwdma_mask,
+				unsigned int *udma_mask)
+{
+	if (pio_mask)
+		*pio_mask = (xfer_mask & ATA_MASK_PIO) >> ATA_SHIFT_PIO;
+	if (mwdma_mask)
+		*mwdma_mask = (xfer_mask & ATA_MASK_MWDMA) >> ATA_SHIFT_MWDMA;
+	if (udma_mask)
+		*udma_mask = (xfer_mask & ATA_MASK_UDMA) >> ATA_SHIFT_UDMA;
+}
+
 static const struct ata_xfer_ent {
-	unsigned int shift, bits;
+	int shift, bits;
 	u8 base;
 } ata_xfer_tbl[] = {
 	{ ATA_SHIFT_PIO, ATA_BITS_PIO, XFER_PIO_0 },
@@ -372,6 +397,15 @@ static const char *ata_mode_string(unsigned int xfer_mask)
 	return "<n/a>";
 }
 
+static void ata_dev_disable(struct ata_port *ap, struct ata_device *dev)
+{
+	if (ata_dev_present(dev)) {
+		printk(KERN_WARNING "ata%u: dev %u disabled\n",
+		       ap->id, dev->devno);
+		dev->class++;
+	}
+}
+
 /**
  *	ata_pio_devchk - PATA device presence detection
  *	@ap: ATA channel to examine
@@ -830,6 +864,9 @@ static unsigned int ata_id_xfermask(const u16 *id)
 /**
  *	ata_port_queue_task - Queue port_task
  *	@ap: The ata_port to queue port_task for
+ *	@fn: workqueue function to be scheduled
+ *	@data: data value to pass to workqueue function
+ *	@delay: delay time for workqueue function
  *
  *	Schedule @fn(@data) for execution after @delay jiffies using
  *	port_task.  There is one port_task per port and it's the
@@ -955,13 +992,13 @@ ata_exec_internal(struct ata_port *ap, struct ata_device *dev,
 	qc->private_data = &wait;
 	qc->complete_fn = ata_qc_complete_internal;
 
-	qc->err_mask = ata_qc_issue(qc);
-	if (qc->err_mask)
-		ata_qc_complete(qc);
+	ata_qc_issue(qc);
 
 	spin_unlock_irqrestore(&ap->host_set->lock, flags);
 
 	if (!wait_for_completion_timeout(&wait, ATA_TMOUT_INTERNAL)) {
+		ata_port_flush_task(ap);
+
 		spin_lock_irqsave(&ap->host_set->lock, flags);
 
 		/* We're racing with irq here.  If we lose, the
@@ -985,6 +1022,22 @@ ata_exec_internal(struct ata_port *ap, struct ata_device *dev,
 
 	ata_qc_free(qc);
 
+	/* XXX - Some LLDDs (sata_mv) disable port on command failure.
+	 * Until those drivers are fixed, we detect the condition
+	 * here, fail the command with AC_ERR_SYSTEM and reenable the
+	 * port.
+	 *
+	 * Note that this doesn't change any behavior as internal
+	 * command failure results in disabling the device in the
+	 * higher layer for LLDDs without new reset/EH callbacks.
+	 *
+	 * Kill the following code as soon as those drivers are fixed.
+	 */
+	if (ap->flags & ATA_FLAG_PORT_DISABLED) {
+		err_mask |= AC_ERR_SYSTEM;
+		ata_port_probe(ap);
+	}
+
 	return err_mask;
 }
 
@@ -1005,7 +1058,7 @@ unsigned int ata_pio_need_iordy(const struct ata_device *adev)
 		return 0;
 	if (speed > 2)
 		return 1;
-		
+
 	/* If we have no drive specific rule, then PIO 2 is non IORDY */
 
 	if (adev->id[ATA_ID_FIELD_VALID] & 2) {	/* EIDE */
@@ -1031,9 +1084,8 @@ unsigned int ata_pio_need_iordy(const struct ata_device *adev)
  *
  *	Read ID data from the specified device.  ATA_CMD_ID_ATA is
  *	performed on ATA devices and ATA_CMD_ID_ATAPI on ATAPI
- *	devices.  This function also takes care of EDD signature
- *	misreporting (to be removed once EDD support is gone) and
- *	issues ATA_CMD_INIT_DEV_PARAMS for pre-ATA4 drives.
+ *	devices.  This function also issues ATA_CMD_INIT_DEV_PARAMS
+ *	for pre-ATA4 drives.
  *
  *	LOCKING:
  *	Kernel thread context (may sleep)
@@ -1045,7 +1097,6 @@ static int ata_dev_read_id(struct ata_port *ap, struct ata_device *dev,
 			   unsigned int *p_class, int post_reset, u16 **p_id)
 {
 	unsigned int class = *p_class;
-	unsigned int using_edd;
 	struct ata_taskfile tf;
 	unsigned int err_mask = 0;
 	u16 *id;
@@ -1054,12 +1105,6 @@ static int ata_dev_read_id(struct ata_port *ap, struct ata_device *dev,
 
 	DPRINTK("ENTER, host %u, dev %u\n", ap->id, dev->devno);
 
-	if (ap->ops->probe_reset ||
-	    ap->flags & (ATA_FLAG_SRST | ATA_FLAG_SATA_RESET))
-		using_edd = 0;
-	else
-		using_edd = 1;
-
 	ata_dev_select(ap, dev->devno, 1, 1); /* select device 0/1 */
 
 	id = kmalloc(sizeof(id[0]) * ATA_ID_WORDS, GFP_KERNEL);
@@ -1089,45 +1134,16 @@ static int ata_dev_read_id(struct ata_port *ap, struct ata_device *dev,
 
 	err_mask = ata_exec_internal(ap, dev, &tf, DMA_FROM_DEVICE,
 				     id, sizeof(id[0]) * ATA_ID_WORDS);
-
 	if (err_mask) {
 		rc = -EIO;
 		reason = "I/O error";
-
-		if (err_mask & ~AC_ERR_DEV)
-			goto err_out;
-
-		/*
-		 * arg!  EDD works for all test cases, but seems to return
-		 * the ATA signature for some ATAPI devices.  Until the
-		 * reason for this is found and fixed, we fix up the mess
-		 * here.  If IDENTIFY DEVICE returns command aborted
-		 * (as ATAPI devices do), then we issue an
-		 * IDENTIFY PACKET DEVICE.
-		 *
-		 * ATA software reset (SRST, the default) does not appear
-		 * to have this problem.
-		 */
-		if ((using_edd) && (class == ATA_DEV_ATA)) {
-			u8 err = tf.feature;
-			if (err & ATA_ABORTED) {
-				class = ATA_DEV_ATAPI;
-				goto retry;
-			}
-		}
 		goto err_out;
 	}
 
 	swap_buf_le16(id, ATA_ID_WORDS);
 
-	/* print device capabilities */
-	printk(KERN_DEBUG "ata%u: dev %u cfg "
-	       "49:%04x 82:%04x 83:%04x 84:%04x 85:%04x 86:%04x 87:%04x 88:%04x\n",
-	       ap->id, dev->devno,
-	       id[49], id[82], id[83], id[84], id[85], id[86], id[87], id[88]);
-
 	/* sanity check */
-	if ((class == ATA_DEV_ATA) != ata_id_is_ata(id)) {
+	if ((class == ATA_DEV_ATA) != (ata_id_is_ata(id) | ata_id_is_cfa(id))) {
 		rc = -EINVAL;
 		reason = "device reports illegal type";
 		goto err_out;
@@ -1143,7 +1159,7 @@ static int ata_dev_read_id(struct ata_port *ap, struct ata_device *dev,
 		 * Some drives were very specific about that exact sequence.
 		 */
 		if (ata_id_major_version(id) < 4 || !ata_id_has_lba(id)) {
-			err_mask = ata_dev_init_params(ap, dev);
+			err_mask = ata_dev_init_params(ap, dev, id[3], id[6]);
 			if (err_mask) {
 				rc = -EIO;
 				reason = "INIT_DEV_PARAMS failed";
@@ -1205,6 +1221,13 @@ static int ata_dev_configure(struct ata_port *ap, struct ata_device *dev,
 
 	DPRINTK("ENTER, host %u, dev %u\n", ap->id, dev->devno);
 
+	/* print device capabilities */
+	if (print_info)
+		printk(KERN_DEBUG "ata%u: dev %u cfg 49:%04x 82:%04x 83:%04x "
+		       "84:%04x 85:%04x 86:%04x 87:%04x 88:%04x\n",
+		       ap->id, dev->devno, id[49], id[82], id[83],
+		       id[84], id[85], id[86], id[87], id[88]);
+
 	/* initialize to-be-configured parameters */
 	dev->flags = 0;
 	dev->max_sectors = 0;
@@ -1218,13 +1241,6 @@ static int ata_dev_configure(struct ata_port *ap, struct ata_device *dev,
 	 * common ATA, ATAPI feature tests
 	 */
 
-	/* we require DMA support (bits 8 of word 49) */
-	if (!ata_id_has_dma(id)) {
-		printk(KERN_DEBUG "ata%u: no dma\n", ap->id);
-		rc = -EINVAL;
-		goto err_out_nosup;
-	}
-
 	/* find max transfer mode; for printk only */
 	xfer_mask = ata_id_xfermask(id);
 
@@ -1309,7 +1325,7 @@ static int ata_dev_configure(struct ata_port *ap, struct ata_device *dev,
 		if (print_info)
 			printk(KERN_INFO "ata%u(%u): applying bridge limits\n",
 			       ap->id, dev->devno);
-		ap->udma_mask &= ATA_UDMA5;
+		dev->udma_mask &= ATA_UDMA5;
 		dev->max_sectors = ATA_MAX_SECTORS;
 	}
 
@@ -1320,8 +1336,6 @@ static int ata_dev_configure(struct ata_port *ap, struct ata_device *dev,
 	return 0;
 
 err_out_nosup:
-	printk(KERN_WARNING "ata%u: dev %u not supported, ignoring\n",
-	       ap->id, dev->devno);
 	DPRINTK("EXIT, err\n");
 	return rc;
 }
@@ -1388,7 +1402,7 @@ static int ata_bus_probe(struct ata_port *ap)
 		}
 
 		if (ata_dev_configure(ap, dev, 1)) {
-			dev->class++;	/* disable device */
+			ata_dev_disable(ap, dev);
 			continue;
 		}
 
@@ -1398,7 +1412,11 @@ static int ata_bus_probe(struct ata_port *ap)
 	if (!found)
 		goto err_out_disable;
 
-	ata_set_mode(ap);
+	if (ap->ops->set_mode)
+		ap->ops->set_mode(ap);
+	else
+		ata_set_mode(ap);
+
 	if (ap->flags & ATA_FLAG_PORT_DISABLED)
 		goto err_out_disable;
 
@@ -1534,6 +1552,23 @@ void sata_phy_reset(struct ata_port *ap)
 }
 
 /**
+ *	ata_dev_pair		-	return other device on cable
+ *	@ap: port
+ *	@adev: device
+ *
+ *	Obtain the other device on the same cable, or if none is
+ *	present NULL is returned
+ */
+
+struct ata_device *ata_dev_pair(struct ata_port *ap, struct ata_device *adev)
+{
+	struct ata_device *pair = &ap->device[1 - adev->devno];
+	if (!ata_dev_present(pair))
+		return NULL;
+	return pair;
+}
+
+/**
  *	ata_port_disable - Disable port.
  *	@ap: Port to be disabled.
  *
@@ -1561,7 +1596,7 @@ void ata_port_disable(struct ata_port *ap)
  * PIO 0-5, MWDMA 0-2 and UDMA 0-6 timings (in nanoseconds).
  * These were taken from ATA/ATAPI-6 standard, rev 0a, except
  * for PIO 5, which is a nonstandard extension and UDMA6, which
- * is currently supported only by Maxtor drives. 
+ * is currently supported only by Maxtor drives.
  */
 
 static const struct ata_timing ata_timing[] = {
@@ -1576,11 +1611,11 @@ static const struct ata_timing ata_timing[] = {
 	{ XFER_UDMA_0,     0,   0,   0,   0,   0,   0,   0, 120 },
 
 /*	{ XFER_UDMA_SLOW,  0,   0,   0,   0,   0,   0,   0, 150 }, */
-                                          
+
 	{ XFER_MW_DMA_2,  25,   0,   0,   0,  70,  25, 120,   0 },
 	{ XFER_MW_DMA_1,  45,   0,   0,   0,  80,  50, 150,   0 },
 	{ XFER_MW_DMA_0,  60,   0,   0,   0, 215, 215, 480,   0 },
-                                          
+
 	{ XFER_SW_DMA_2,  60,   0,   0,   0, 120, 120, 240,   0 },
 	{ XFER_SW_DMA_1,  90,   0,   0,   0, 240, 240, 480,   0 },
 	{ XFER_SW_DMA_0, 120,   0,   0,   0, 480, 480, 960,   0 },
@@ -1633,7 +1668,7 @@ static const struct ata_timing* ata_timing_find_mode(unsigned short speed)
 	for (t = ata_timing; t->mode != speed; t++)
 		if (t->mode == 0xFF)
 			return NULL;
-	return t; 
+	return t;
 }
 
 int ata_timing_compute(struct ata_device *adev, unsigned short speed,
@@ -1643,7 +1678,7 @@ int ata_timing_compute(struct ata_device *adev, unsigned short speed,
 	struct ata_timing p;
 
 	/*
-	 * Find the mode. 
+	 * Find the mode.
 	 */
 
 	if (!(s = ata_timing_find_mode(speed)))
@@ -1701,20 +1736,28 @@ int ata_timing_compute(struct ata_device *adev, unsigned short speed,
 	return 0;
 }
 
-static void ata_dev_set_mode(struct ata_port *ap, struct ata_device *dev)
+static int ata_dev_set_mode(struct ata_port *ap, struct ata_device *dev)
 {
-	if (!ata_dev_present(dev) || (ap->flags & ATA_FLAG_PORT_DISABLED))
-		return;
+	unsigned int err_mask;
+	int rc;
 
 	if (dev->xfer_shift == ATA_SHIFT_PIO)
 		dev->flags |= ATA_DFLAG_PIO;
 
-	ata_dev_set_xfermode(ap, dev);
+	err_mask = ata_dev_set_xfermode(ap, dev);
+	if (err_mask) {
+		printk(KERN_ERR
+		       "ata%u: failed to set xfermode (err_mask=0x%x)\n",
+		       ap->id, err_mask);
+		return -EIO;
+	}
 
-	if (ata_dev_revalidate(ap, dev, 0)) {
-		printk(KERN_ERR "ata%u: failed to revalidate after set "
-		       "xfermode, disabled\n", ap->id);
-		ata_port_disable(ap);
+	rc = ata_dev_revalidate(ap, dev, 0);
+	if (rc) {
+		printk(KERN_ERR
+		       "ata%u: failed to revalidate after set xfermode\n",
+		       ap->id);
+		return rc;
 	}
 
 	DPRINTK("xfer_shift=%u, xfer_mode=0x%x\n",
@@ -1723,6 +1766,7 @@ static void ata_dev_set_mode(struct ata_port *ap, struct ata_device *dev)
 	printk(KERN_INFO "ata%u: dev %u configured for %s\n",
 	       ap->id, dev->devno,
 	       ata_mode_string(ata_xfer_mode2mask(dev->xfer_mode)));
+	return 0;
 }
 
 static int ata_host_set_pio(struct ata_port *ap)
@@ -1736,7 +1780,7 @@ static int ata_host_set_pio(struct ata_port *ap)
 			continue;
 
 		if (!dev->pio_mode) {
-			printk(KERN_WARNING "ata%u: no PIO support\n", ap->id);
+			printk(KERN_WARNING "ata%u: no PIO support for device %d.\n", ap->id, i);
 			return -1;
 		}
 
@@ -1777,21 +1821,27 @@ static void ata_host_set_dma(struct ata_port *ap)
  */
 static void ata_set_mode(struct ata_port *ap)
 {
-	int i, rc;
+	int i, rc, used_dma = 0;
 
 	/* step 1: calculate xfer_mask */
 	for (i = 0; i < ATA_MAX_DEVICES; i++) {
 		struct ata_device *dev = &ap->device[i];
-		unsigned int xfer_mask;
+		unsigned int pio_mask, dma_mask;
 
 		if (!ata_dev_present(dev))
 			continue;
 
-		xfer_mask = ata_dev_xfermask(ap, dev);
+		ata_dev_xfermask(ap, dev);
+
+		/* TODO: let LLDD filter dev->*_mask here */
 
-		dev->pio_mode = ata_xfer_mask2mode(xfer_mask & ATA_MASK_PIO);
-		dev->dma_mode = ata_xfer_mask2mode(xfer_mask & (ATA_MASK_MWDMA |
-								ATA_MASK_UDMA));
+		pio_mask = ata_pack_xfermask(dev->pio_mask, 0, 0);
+		dma_mask = ata_pack_xfermask(0, dev->mwdma_mask, dev->udma_mask);
+		dev->pio_mode = ata_xfer_mask2mode(pio_mask);
+		dev->dma_mode = ata_xfer_mask2mode(dma_mask);
+
+		if (dev->dma_mode)
+			used_dma = 1;
 	}
 
 	/* step 2: always set host PIO timings */
@@ -1803,12 +1853,27 @@ static void ata_set_mode(struct ata_port *ap)
 	ata_host_set_dma(ap);
 
 	/* step 4: update devices' xfer mode */
-	for (i = 0; i < ATA_MAX_DEVICES; i++)
-		ata_dev_set_mode(ap, &ap->device[i]);
+	for (i = 0; i < ATA_MAX_DEVICES; i++) {
+		struct ata_device *dev = &ap->device[i];
 
-	if (ap->flags & ATA_FLAG_PORT_DISABLED)
-		return;
+		if (!ata_dev_present(dev))
+			continue;
+
+		if (ata_dev_set_mode(ap, dev))
+			goto err_out;
+	}
+
+	/*
+	 *	Record simplex status. If we selected DMA then the other
+	 *	host channels are not permitted to do so.
+	 */
+
+	if (used_dma && (ap->host_set->flags & ATA_HOST_SIMPLEX))
+		ap->host_set->simplex_claimed = 1;
 
+	/*
+	 *	Chip specific finalisation
+	 */
 	if (ap->ops->post_set_mode)
 		ap->ops->post_set_mode(ap);
 
@@ -1930,45 +1995,6 @@ static void ata_bus_post_reset(struct ata_port *ap, unsigned int devmask)
 		ap->ops->dev_select(ap, 0);
 }
 
-/**
- *	ata_bus_edd - Issue EXECUTE DEVICE DIAGNOSTIC command.
- *	@ap: Port to reset and probe
- *
- *	Use the EXECUTE DEVICE DIAGNOSTIC command to reset and
- *	probe the bus.  Not often used these days.
- *
- *	LOCKING:
- *	PCI/etc. bus probe sem.
- *	Obtains host_set lock.
- *
- */
-
-static unsigned int ata_bus_edd(struct ata_port *ap)
-{
-	struct ata_taskfile tf;
-	unsigned long flags;
-
-	/* set up execute-device-diag (bus reset) taskfile */
-	/* also, take interrupts to a known state (disabled) */
-	DPRINTK("execute-device-diag\n");
-	ata_tf_init(ap, &tf, 0);
-	tf.ctl |= ATA_NIEN;
-	tf.command = ATA_CMD_EDD;
-	tf.protocol = ATA_PROT_NODATA;
-
-	/* do bus reset */
-	spin_lock_irqsave(&ap->host_set->lock, flags);
-	ata_tf_to_host(ap, &tf);
-	spin_unlock_irqrestore(&ap->host_set->lock, flags);
-
-	/* spec says at least 2ms.  but who knows with those
-	 * crazy ATAPI devices...
-	 */
-	msleep(150);
-
-	return ata_busy_sleep(ap, ATA_TMOUT_BOOT_QUICK, ATA_TMOUT_BOOT);
-}
-
 static unsigned int ata_bus_softreset(struct ata_port *ap,
 				      unsigned int devmask)
 {
@@ -1998,9 +2024,18 @@ static unsigned int ata_bus_softreset(struct ata_port *ap,
 	 * status is checked.  Because waiting for "a while" before
 	 * checking status is fine, post SRST, we perform this magic
 	 * delay here as well.
+	 *
+	 * Old drivers/ide uses the 2mS rule and then waits for ready
 	 */
 	msleep(150);
 
+	/* Before we perform post reset processing we want to see if
+	 * the bus shows 0xFF because the odd clown forgets the D7
+	 * pulldown resistor.
+	 */
+	if (ata_check_status(ap) == 0xFF)
+		return AC_ERR_OTHER;
+
 	ata_bus_post_reset(ap, devmask);
 
 	return 0;
@@ -2031,7 +2066,7 @@ void ata_bus_reset(struct ata_port *ap)
 	struct ata_ioports *ioaddr = &ap->ioaddr;
 	unsigned int slave_possible = ap->flags & ATA_FLAG_SLAVE_POSS;
 	u8 err;
-	unsigned int dev0, dev1 = 0, rc = 0, devmask = 0;
+	unsigned int dev0, dev1 = 0, devmask = 0;
 
 	DPRINTK("ENTER, host %u, port %u\n", ap->id, ap->port_no);
 
@@ -2054,18 +2089,8 @@ void ata_bus_reset(struct ata_port *ap)
 
 	/* issue bus reset */
 	if (ap->flags & ATA_FLAG_SRST)
-		rc = ata_bus_softreset(ap, devmask);
-	else if ((ap->flags & ATA_FLAG_SATA_RESET) == 0) {
-		/* set up device control */
-		if (ap->flags & ATA_FLAG_MMIO)
-			writeb(ap->ctl, (void __iomem *) ioaddr->ctl_addr);
-		else
-			outb(ap->ctl, ioaddr->ctl_addr);
-		rc = ata_bus_edd(ap);
-	}
-
-	if (rc)
-		goto err_out;
+		if (ata_bus_softreset(ap, devmask))
+			goto err_out;
 
 	/*
 	 * determine by signature whether we have ATA or ATAPI devices
@@ -2138,9 +2163,9 @@ static int sata_phy_resume(struct ata_port *ap)
  *	so makes reset sequence different from the original
  *	->phy_reset implementation and Jeff nervous.  :-P
  */
-extern void ata_std_probeinit(struct ata_port *ap)
+void ata_std_probeinit(struct ata_port *ap)
 {
-	if (ap->flags & ATA_FLAG_SATA && ap->ops->scr_read) {
+	if ((ap->flags & ATA_FLAG_SATA) && ap->ops->scr_read) {
 		sata_phy_resume(ap);
 		if (sata_dev_present(ap))
 			ata_busy_sleep(ap, ATA_TMOUT_BOOT_QUICK, ATA_TMOUT_BOOT);
@@ -2550,48 +2575,72 @@ int ata_dev_revalidate(struct ata_port *ap, struct ata_device *dev,
 }
 
 static const char * const ata_dma_blacklist [] = {
-	"WDC AC11000H",
-	"WDC AC22100H",
-	"WDC AC32500H",
-	"WDC AC33100H",
-	"WDC AC31600H",
-	"WDC AC32100H",
-	"WDC AC23200L",
-	"Compaq CRD-8241B",
-	"CRD-8400B",
-	"CRD-8480B",
-	"CRD-8482B",
- 	"CRD-84",
-	"SanDisk SDP3B",
-	"SanDisk SDP3B-64",
-	"SANYO CD-ROM CRD",
-	"HITACHI CDR-8",
-	"HITACHI CDR-8335",
-	"HITACHI CDR-8435",
-	"Toshiba CD-ROM XM-6202B",
-	"TOSHIBA CD-ROM XM-1702BC",
-	"CD-532E-A",
-	"E-IDE CD-ROM CR-840",
-	"CD-ROM Drive/F5A",
-	"WPI CDD-820",
-	"SAMSUNG CD-ROM SC-148C",
-	"SAMSUNG CD-ROM SC",
-	"SanDisk SDP3B-64",
-	"ATAPI CD-ROM DRIVE 40X MAXIMUM",
-	"_NEC DV5800A",
+	"WDC AC11000H", NULL,
+	"WDC AC22100H", NULL,
+	"WDC AC32500H", NULL,
+	"WDC AC33100H", NULL,
+	"WDC AC31600H", NULL,
+	"WDC AC32100H", "24.09P07",
+	"WDC AC23200L", "21.10N21",
+	"Compaq CRD-8241B",  NULL,
+	"CRD-8400B", NULL,
+	"CRD-8480B", NULL,
+	"CRD-8482B", NULL,
+ 	"CRD-84", NULL,
+	"SanDisk SDP3B", NULL,
+	"SanDisk SDP3B-64", NULL,
+	"SANYO CD-ROM CRD", NULL,
+	"HITACHI CDR-8", NULL,
+	"HITACHI CDR-8335", NULL,
+	"HITACHI CDR-8435", NULL,
+	"Toshiba CD-ROM XM-6202B", NULL,
+	"TOSHIBA CD-ROM XM-1702BC", NULL,
+	"CD-532E-A", NULL,
+	"E-IDE CD-ROM CR-840", NULL,
+	"CD-ROM Drive/F5A", NULL,
+	"WPI CDD-820", NULL,
+	"SAMSUNG CD-ROM SC-148C", NULL,
+	"SAMSUNG CD-ROM SC", NULL,
+	"SanDisk SDP3B-64", NULL,
+	"ATAPI CD-ROM DRIVE 40X MAXIMUM",NULL,
+	"_NEC DV5800A", NULL,
+	"SAMSUNG CD-ROM SN-124", "N001"
 };
 
+static int ata_strim(char *s, size_t len)
+{
+	len = strnlen(s, len);
+
+	/* ATAPI specifies that empty space is blank-filled; remove blanks */
+	while ((len > 0) && (s[len - 1] == ' ')) {
+		len--;
+		s[len] = 0;
+	}
+	return len;
+}
+
 static int ata_dma_blacklisted(const struct ata_device *dev)
 {
-	unsigned char model_num[41];
+	unsigned char model_num[40];
+	unsigned char model_rev[16];
+	unsigned int nlen, rlen;
 	int i;
 
-	ata_id_c_string(dev->id, model_num, ATA_ID_PROD_OFS, sizeof(model_num));
-
-	for (i = 0; i < ARRAY_SIZE(ata_dma_blacklist); i++)
-		if (!strcmp(ata_dma_blacklist[i], model_num))
-			return 1;
+	ata_id_string(dev->id, model_num, ATA_ID_PROD_OFS,
+			  sizeof(model_num));
+	ata_id_string(dev->id, model_rev, ATA_ID_FW_REV_OFS,
+			  sizeof(model_rev));
+	nlen = ata_strim(model_num, sizeof(model_num));
+	rlen = ata_strim(model_rev, sizeof(model_rev));
 
+	for (i = 0; i < ARRAY_SIZE(ata_dma_blacklist); i += 2) {
+		if (!strncmp(ata_dma_blacklist[i], model_num, nlen)) {
+			if (ata_dma_blacklist[i+1] == NULL)
+				return 1;
+			if (!strncmp(ata_dma_blacklist[i], model_rev, rlen))
+				return 1;
+		}
+	}
 	return 0;
 }
 
@@ -2600,40 +2649,56 @@ static int ata_dma_blacklisted(const struct ata_device *dev)
  *	@ap: Port on which the device to compute xfermask for resides
  *	@dev: Device to compute xfermask for
  *
- *	Compute supported xfermask of @dev.  This function is
- *	responsible for applying all known limits including host
- *	controller limits, device blacklist, etc...
+ *	Compute supported xfermask of @dev and store it in
+ *	dev->*_mask.  This function is responsible for applying all
+ *	known limits including host controller limits, device
+ *	blacklist, etc...
+ *
+ *	FIXME: The current implementation limits all transfer modes to
+ *	the fastest of the lowested device on the port.  This is not
+ *	required on most controllers.
  *
  *	LOCKING:
  *	None.
- *
- *	RETURNS:
- *	Computed xfermask.
  */
-static unsigned int ata_dev_xfermask(struct ata_port *ap,
-				     struct ata_device *dev)
+static void ata_dev_xfermask(struct ata_port *ap, struct ata_device *dev)
 {
+	struct ata_host_set *hs = ap->host_set;
 	unsigned long xfer_mask;
 	int i;
 
 	xfer_mask = ata_pack_xfermask(ap->pio_mask, ap->mwdma_mask,
 				      ap->udma_mask);
 
-	/* use port-wide xfermask for now */
+	/* FIXME: Use port-wide xfermask for now */
 	for (i = 0; i < ATA_MAX_DEVICES; i++) {
 		struct ata_device *d = &ap->device[i];
 		if (!ata_dev_present(d))
 			continue;
+		xfer_mask &= ata_pack_xfermask(d->pio_mask, d->mwdma_mask,
+					       d->udma_mask);
 		xfer_mask &= ata_id_xfermask(d->id);
 		if (ata_dma_blacklisted(d))
 			xfer_mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA);
+		/* Apply cable rule here. Don't apply it early because when
+		   we handle hot plug the cable type can itself change */
+		if (ap->cbl == ATA_CBL_PATA40)
+			xfer_mask &= ~(0xF8 << ATA_SHIFT_UDMA);
 	}
 
 	if (ata_dma_blacklisted(dev))
 		printk(KERN_WARNING "ata%u: dev %u is on DMA blacklist, "
 		       "disabling DMA\n", ap->id, dev->devno);
 
-	return xfer_mask;
+	if (hs->flags & ATA_HOST_SIMPLEX) {
+		if (hs->simplex_claimed)
+			xfer_mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA);
+	}
+	if (ap->ops->mode_filter)
+		xfer_mask = ap->ops->mode_filter(ap, dev, xfer_mask);
+
+	ata_unpack_xfermask(xfer_mask, &dev->pio_mask, &dev->mwdma_mask,
+			    &dev->udma_mask);
 }
 
 /**
@@ -2646,11 +2711,16 @@ static unsigned int ata_dev_xfermask(struct ata_port *ap,
  *
  *	LOCKING:
  *	PCI/etc. bus probe sem.
+ *
+ *	RETURNS:
+ *	0 on success, AC_ERR_* mask otherwise.
  */
 
-static void ata_dev_set_xfermode(struct ata_port *ap, struct ata_device *dev)
+static unsigned int ata_dev_set_xfermode(struct ata_port *ap,
+					 struct ata_device *dev)
 {
 	struct ata_taskfile tf;
+	unsigned int err_mask;
 
 	/* set up set-features taskfile */
 	DPRINTK("set features - xfer mode\n");
@@ -2662,19 +2732,18 @@ static void ata_dev_set_xfermode(struct ata_port *ap, struct ata_device *dev)
 	tf.protocol = ATA_PROT_NODATA;
 	tf.nsect = dev->xfer_mode;
 
-	if (ata_exec_internal(ap, dev, &tf, DMA_NONE, NULL, 0)) {
-		printk(KERN_ERR "ata%u: failed to set xfermode, disabled\n",
-		       ap->id);
-		ata_port_disable(ap);
-	}
+	err_mask = ata_exec_internal(ap, dev, &tf, DMA_NONE, NULL, 0);
 
-	DPRINTK("EXIT\n");
+	DPRINTK("EXIT, err_mask=%x\n", err_mask);
+	return err_mask;
 }
 
 /**
  *	ata_dev_init_params - Issue INIT DEV PARAMS command
  *	@ap: Port associated with device @dev
  *	@dev: Device to which command will be sent
+ *	@heads: Number of heads (taskfile parameter)
+ *	@sectors: Number of sectors (taskfile parameter)
  *
  *	LOCKING:
  *	Kernel thread context (may sleep)
@@ -2684,16 +2753,16 @@ static void ata_dev_set_xfermode(struct ata_port *ap, struct ata_device *dev)
  */
 
 static unsigned int ata_dev_init_params(struct ata_port *ap,
-					struct ata_device *dev)
+					struct ata_device *dev,
+					u16 heads,
+					u16 sectors)
 {
 	struct ata_taskfile tf;
 	unsigned int err_mask;
-	u16 sectors = dev->id[6];
-	u16 heads   = dev->id[3];
 
 	/* Number of sectors per track 1-255. Number of heads 1-16 */
 	if (sectors < 1 || sectors > 255 || heads < 1 || heads > 16)
-		return 0;
+		return AC_ERR_INVALID;
 
 	/* set up init dev params taskfile */
 	DPRINTK("init dev params \n");
@@ -2745,7 +2814,7 @@ static void ata_sg_clean(struct ata_queued_cmd *qc)
 
 	if (qc->flags & ATA_QCFLAG_SG) {
 		if (qc->n_elem)
-			dma_unmap_sg(ap->host_set->dev, sg, qc->n_elem, dir);
+			dma_unmap_sg(ap->dev, sg, qc->n_elem, dir);
 		/* restore last sg */
 		sg[qc->orig_n_elem - 1].length += qc->pad_len;
 		if (pad_buf) {
@@ -2756,7 +2825,7 @@ static void ata_sg_clean(struct ata_queued_cmd *qc)
 		}
 	} else {
 		if (qc->n_elem)
-			dma_unmap_single(ap->host_set->dev,
+			dma_unmap_single(ap->dev,
 				sg_dma_address(&sg[0]), sg_dma_len(&sg[0]),
 				dir);
 		/* restore sg */
@@ -2862,6 +2931,8 @@ void ata_qc_prep(struct ata_queued_cmd *qc)
 	ata_fill_sg(qc);
 }
 
+void ata_noop_qc_prep(struct ata_queued_cmd *qc) { }
+
 /**
  *	ata_sg_init_one - Associate command with memory buffer
  *	@qc: Command to be associated
@@ -2965,7 +3036,7 @@ static int ata_sg_setup_one(struct ata_queued_cmd *qc)
 		goto skip_map;
 	}
 
-	dma_address = dma_map_single(ap->host_set->dev, qc->buf_virt,
+	dma_address = dma_map_single(ap->dev, qc->buf_virt,
 				     sg->length, dir);
 	if (dma_mapping_error(dma_address)) {
 		/* restore sg */
@@ -3053,7 +3124,7 @@ static int ata_sg_setup(struct ata_queued_cmd *qc)
 	}
 
 	dir = qc->dma_dir;
-	n_elem = dma_map_sg(ap->host_set->dev, sg, pre_n_elem, dir);
+	n_elem = dma_map_sg(ap->dev, sg, pre_n_elem, dir);
 	if (n_elem < 1) {
 		/* restore last sg */
 		lsg->length += qc->pad_len;
@@ -3572,6 +3643,8 @@ static void ata_pio_block(struct ata_port *ap)
 
 		ata_pio_sector(qc);
 	}
+
+	ata_altstatus(ap); /* flush */
 }
 
 static void ata_pio_error(struct ata_port *ap)
@@ -3584,7 +3657,7 @@ static void ata_pio_error(struct ata_port *ap)
 	if (qc->tf.command != ATA_CMD_PACKET)
 		printk(KERN_WARNING "ata%u: PIO error\n", ap->id);
 
-	/* make sure qc->err_mask is available to 
+	/* make sure qc->err_mask is available to
 	 * know what's wrong and recover
 	 */
 	WARN_ON(qc->err_mask == 0);
@@ -3688,11 +3761,14 @@ static void atapi_packet_task(void *_data)
 		spin_lock_irqsave(&ap->host_set->lock, flags);
 		ap->flags &= ~ATA_FLAG_NOINTR;
 		ata_data_xfer(ap, qc->cdb, qc->dev->cdb_len, 1);
+		ata_altstatus(ap); /* flush */
+
 		if (qc->tf.protocol == ATA_PROT_ATAPI_DMA)
 			ap->ops->bmdma_start(qc);	/* initiate bmdma */
 		spin_unlock_irqrestore(&ap->host_set->lock, flags);
 	} else {
 		ata_data_xfer(ap, qc->cdb, qc->dev->cdb_len, 1);
+		ata_altstatus(ap); /* flush */
 
 		/* PIO commands are handled by polling */
 		ap->hsm_task_state = HSM_ST;
@@ -3906,7 +3982,6 @@ static inline int ata_should_dma_map(struct ata_queued_cmd *qc)
 
 	case ATA_PROT_ATAPI:
 	case ATA_PROT_PIO:
-	case ATA_PROT_PIO_MULT:
 		if (ap->flags & ATA_FLAG_PIO_DMA)
 			return 1;
 
@@ -3930,15 +4005,14 @@ static inline int ata_should_dma_map(struct ata_queued_cmd *qc)
  *
  *	LOCKING:
  *	spin_lock_irqsave(host_set lock)
- *
- *	RETURNS:
- *	Zero on success, AC_ERR_* mask on failure
  */
-
-unsigned int ata_qc_issue(struct ata_queued_cmd *qc)
+void ata_qc_issue(struct ata_queued_cmd *qc)
 {
 	struct ata_port *ap = qc->ap;
 
+	qc->ap->active_tag = qc->tag;
+	qc->flags |= ATA_QCFLAG_ACTIVE;
+
 	if (ata_should_dma_map(qc)) {
 		if (qc->flags & ATA_QCFLAG_SG) {
 			if (ata_sg_setup(qc))
@@ -3953,17 +4027,18 @@ unsigned int ata_qc_issue(struct ata_queued_cmd *qc)
 
 	ap->ops->qc_prep(qc);
 
-	qc->ap->active_tag = qc->tag;
-	qc->flags |= ATA_QCFLAG_ACTIVE;
-
-	return ap->ops->qc_issue(qc);
+	qc->err_mask |= ap->ops->qc_issue(qc);
+	if (unlikely(qc->err_mask))
+		goto err;
+	return;
 
 sg_err:
 	qc->flags &= ~ATA_QCFLAG_DMAMAP;
-	return AC_ERR_SYSTEM;
+	qc->err_mask |= AC_ERR_SYSTEM;
+err:
+	ata_qc_complete(qc);
 }
 
-
 /**
  *	ata_qc_issue_prot - issue taskfile to device in proto-dependent manner
  *	@qc: command to issue to device
@@ -4034,237 +4109,6 @@ unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc)
 }
 
 /**
- *	ata_bmdma_setup_mmio - Set up PCI IDE BMDMA transaction
- *	@qc: Info associated with this ATA transaction.
- *
- *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
- */
-
-static void ata_bmdma_setup_mmio (struct ata_queued_cmd *qc)
-{
-	struct ata_port *ap = qc->ap;
-	unsigned int rw = (qc->tf.flags & ATA_TFLAG_WRITE);
-	u8 dmactl;
-	void __iomem *mmio = (void __iomem *) ap->ioaddr.bmdma_addr;
-
-	/* load PRD table addr. */
-	mb();	/* make sure PRD table writes are visible to controller */
-	writel(ap->prd_dma, mmio + ATA_DMA_TABLE_OFS);
-
-	/* specify data direction, triple-check start bit is clear */
-	dmactl = readb(mmio + ATA_DMA_CMD);
-	dmactl &= ~(ATA_DMA_WR | ATA_DMA_START);
-	if (!rw)
-		dmactl |= ATA_DMA_WR;
-	writeb(dmactl, mmio + ATA_DMA_CMD);
-
-	/* issue r/w command */
-	ap->ops->exec_command(ap, &qc->tf);
-}
-
-/**
- *	ata_bmdma_start_mmio - Start a PCI IDE BMDMA transaction
- *	@qc: Info associated with this ATA transaction.
- *
- *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
- */
-
-static void ata_bmdma_start_mmio (struct ata_queued_cmd *qc)
-{
-	struct ata_port *ap = qc->ap;
-	void __iomem *mmio = (void __iomem *) ap->ioaddr.bmdma_addr;
-	u8 dmactl;
-
-	/* start host DMA transaction */
-	dmactl = readb(mmio + ATA_DMA_CMD);
-	writeb(dmactl | ATA_DMA_START, mmio + ATA_DMA_CMD);
-
-	/* Strictly, one may wish to issue a readb() here, to
-	 * flush the mmio write.  However, control also passes
-	 * to the hardware at this point, and it will interrupt
-	 * us when we are to resume control.  So, in effect,
-	 * we don't care when the mmio write flushes.
-	 * Further, a read of the DMA status register _immediately_
-	 * following the write may not be what certain flaky hardware
-	 * is expected, so I think it is best to not add a readb()
-	 * without first all the MMIO ATA cards/mobos.
-	 * Or maybe I'm just being paranoid.
-	 */
-}
-
-/**
- *	ata_bmdma_setup_pio - Set up PCI IDE BMDMA transaction (PIO)
- *	@qc: Info associated with this ATA transaction.
- *
- *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
- */
-
-static void ata_bmdma_setup_pio (struct ata_queued_cmd *qc)
-{
-	struct ata_port *ap = qc->ap;
-	unsigned int rw = (qc->tf.flags & ATA_TFLAG_WRITE);
-	u8 dmactl;
-
-	/* load PRD table addr. */
-	outl(ap->prd_dma, ap->ioaddr.bmdma_addr + ATA_DMA_TABLE_OFS);
-
-	/* specify data direction, triple-check start bit is clear */
-	dmactl = inb(ap->ioaddr.bmdma_addr + ATA_DMA_CMD);
-	dmactl &= ~(ATA_DMA_WR | ATA_DMA_START);
-	if (!rw)
-		dmactl |= ATA_DMA_WR;
-	outb(dmactl, ap->ioaddr.bmdma_addr + ATA_DMA_CMD);
-
-	/* issue r/w command */
-	ap->ops->exec_command(ap, &qc->tf);
-}
-
-/**
- *	ata_bmdma_start_pio - Start a PCI IDE BMDMA transaction (PIO)
- *	@qc: Info associated with this ATA transaction.
- *
- *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
- */
-
-static void ata_bmdma_start_pio (struct ata_queued_cmd *qc)
-{
-	struct ata_port *ap = qc->ap;
-	u8 dmactl;
-
-	/* start host DMA transaction */
-	dmactl = inb(ap->ioaddr.bmdma_addr + ATA_DMA_CMD);
-	outb(dmactl | ATA_DMA_START,
-	     ap->ioaddr.bmdma_addr + ATA_DMA_CMD);
-}
-
-
-/**
- *	ata_bmdma_start - Start a PCI IDE BMDMA transaction
- *	@qc: Info associated with this ATA transaction.
- *
- *	Writes the ATA_DMA_START flag to the DMA command register.
- *
- *	May be used as the bmdma_start() entry in ata_port_operations.
- *
- *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
- */
-void ata_bmdma_start(struct ata_queued_cmd *qc)
-{
-	if (qc->ap->flags & ATA_FLAG_MMIO)
-		ata_bmdma_start_mmio(qc);
-	else
-		ata_bmdma_start_pio(qc);
-}
-
-
-/**
- *	ata_bmdma_setup - Set up PCI IDE BMDMA transaction
- *	@qc: Info associated with this ATA transaction.
- *
- *	Writes address of PRD table to device's PRD Table Address
- *	register, sets the DMA control register, and calls
- *	ops->exec_command() to start the transfer.
- *
- *	May be used as the bmdma_setup() entry in ata_port_operations.
- *
- *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
- */
-void ata_bmdma_setup(struct ata_queued_cmd *qc)
-{
-	if (qc->ap->flags & ATA_FLAG_MMIO)
-		ata_bmdma_setup_mmio(qc);
-	else
-		ata_bmdma_setup_pio(qc);
-}
-
-
-/**
- *	ata_bmdma_irq_clear - Clear PCI IDE BMDMA interrupt.
- *	@ap: Port associated with this ATA transaction.
- *
- *	Clear interrupt and error flags in DMA status register.
- *
- *	May be used as the irq_clear() entry in ata_port_operations.
- *
- *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
- */
-
-void ata_bmdma_irq_clear(struct ata_port *ap)
-{
-    if (ap->flags & ATA_FLAG_MMIO) {
-        void __iomem *mmio = ((void __iomem *) ap->ioaddr.bmdma_addr) + ATA_DMA_STATUS;
-        writeb(readb(mmio), mmio);
-    } else {
-        unsigned long addr = ap->ioaddr.bmdma_addr + ATA_DMA_STATUS;
-        outb(inb(addr), addr);
-    }
-
-}
-
-
-/**
- *	ata_bmdma_status - Read PCI IDE BMDMA status
- *	@ap: Port associated with this ATA transaction.
- *
- *	Read and return BMDMA status register.
- *
- *	May be used as the bmdma_status() entry in ata_port_operations.
- *
- *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
- */
-
-u8 ata_bmdma_status(struct ata_port *ap)
-{
-	u8 host_stat;
-	if (ap->flags & ATA_FLAG_MMIO) {
-		void __iomem *mmio = (void __iomem *) ap->ioaddr.bmdma_addr;
-		host_stat = readb(mmio + ATA_DMA_STATUS);
-	} else
-		host_stat = inb(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS);
-	return host_stat;
-}
-
-
-/**
- *	ata_bmdma_stop - Stop PCI IDE BMDMA transfer
- *	@qc: Command we are ending DMA for
- *
- *	Clears the ATA_DMA_START flag in the dma control register
- *
- *	May be used as the bmdma_stop() entry in ata_port_operations.
- *
- *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
- */
-
-void ata_bmdma_stop(struct ata_queued_cmd *qc)
-{
-	struct ata_port *ap = qc->ap;
-	if (ap->flags & ATA_FLAG_MMIO) {
-		void __iomem *mmio = (void __iomem *) ap->ioaddr.bmdma_addr;
-
-		/* clear start/stop bit */
-		writeb(readb(mmio + ATA_DMA_CMD) & ~ATA_DMA_START,
-			mmio + ATA_DMA_CMD);
-	} else {
-		/* clear start/stop bit */
-		outb(inb(ap->ioaddr.bmdma_addr + ATA_DMA_CMD) & ~ATA_DMA_START,
-			ap->ioaddr.bmdma_addr + ATA_DMA_CMD);
-	}
-
-	/* one-PIO-cycle guaranteed wait, per spec, for HDMA1:0 transition */
-	ata_altstatus(ap);        /* dummy read */
-}
-
-/**
  *	ata_host_intr - Handle host interrupt for given (port, task)
  *	@ap: Port on which interrupt arrived (possibly...)
  *	@qc: Taskfile currently active in engine
@@ -4336,9 +4180,9 @@ idle_irq:
 
 #ifdef ATA_IRQ_TRAP
 	if ((ap->stats.idle_irq % 1000) == 0) {
-		handled = 1;
 		ata_irq_ack(ap, 0); /* debug trap */
 		printk(KERN_WARNING "ata%d: irq trap\n", ap->id);
+		return 1;
 	}
 #endif
 	return 0;	/* irq not handled */
@@ -4453,6 +4297,7 @@ static int ata_start_drive(struct ata_port *ap, struct ata_device *dev)
 int ata_device_resume(struct ata_port *ap, struct ata_device *dev)
 {
 	if (ap->flags & ATA_FLAG_SUSPENDED) {
+		ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 200000);
 		ap->flags &= ~ATA_FLAG_SUSPENDED;
 		ata_set_mode(ap);
 	}
@@ -4468,18 +4313,20 @@ int ata_device_resume(struct ata_port *ap, struct ata_device *dev)
  *	ata_device_suspend - prepare a device for suspend
  *	@ap: port the device is connected to
  *	@dev: the device to suspend
+ *	@state: target power management state
  *
  *	Flush the cache on the drive, if appropriate, then issue a
  *	standbynow command.
  */
-int ata_device_suspend(struct ata_port *ap, struct ata_device *dev)
+int ata_device_suspend(struct ata_port *ap, struct ata_device *dev, pm_message_t state)
 {
 	if (!ata_dev_present(dev))
 		return 0;
 	if (dev->class == ATA_DEV_ATA)
 		ata_flush_cache(ap, dev);
 
-	ata_standby_drive(ap, dev);
+	if (state.event != PM_EVENT_FREEZE)
+		ata_standby_drive(ap, dev);
 	ap->flags |= ATA_FLAG_SUSPENDED;
 	return 0;
 }
@@ -4499,7 +4346,7 @@ int ata_device_suspend(struct ata_port *ap, struct ata_device *dev)
 
 int ata_port_start (struct ata_port *ap)
 {
-	struct device *dev = ap->host_set->dev;
+	struct device *dev = ap->dev;
 	int rc;
 
 	ap->prd = dma_alloc_coherent(dev, ATA_PRD_TBL_SZ, &ap->prd_dma, GFP_KERNEL);
@@ -4532,7 +4379,7 @@ int ata_port_start (struct ata_port *ap)
 
 void ata_port_stop (struct ata_port *ap)
 {
-	struct device *dev = ap->host_set->dev;
+	struct device *dev = ap->dev;
 
 	dma_free_coherent(dev, ATA_PRD_TBL_SZ, ap->prd, ap->prd_dma);
 	ata_pad_free(ap, dev);
@@ -4598,6 +4445,7 @@ static void ata_host_init(struct ata_port *ap, struct Scsi_Host *host,
 	ap->host = host;
 	ap->ctl = ATA_DEVCTL_OBS;
 	ap->host_set = host_set;
+	ap->dev = ent->dev;
 	ap->port_no = port_no;
 	ap->hard_port_no =
 		ent->legacy_mode ? ent->hard_port_no : port_no;
@@ -4613,8 +4461,13 @@ static void ata_host_init(struct ata_port *ap, struct Scsi_Host *host,
 	INIT_WORK(&ap->port_task, NULL, NULL);
 	INIT_LIST_HEAD(&ap->eh_done_q);
 
-	for (i = 0; i < ATA_MAX_DEVICES; i++)
-		ap->device[i].devno = i;
+	for (i = 0; i < ATA_MAX_DEVICES; i++) {
+		struct ata_device *dev = &ap->device[i];
+		dev->devno = i;
+		dev->pio_mask = UINT_MAX;
+		dev->mwdma_mask = UINT_MAX;
+		dev->udma_mask = UINT_MAX;
+	}
 
 #ifdef ATA_IRQ_TRAP
 	ap->stats.unhandled_irq = 1;
@@ -4648,10 +4501,20 @@ static struct ata_port * ata_host_add(const struct ata_probe_ent *ent,
 	int rc;
 
 	DPRINTK("ENTER\n");
+
+	if (!ent->port_ops->probe_reset &&
+	    !(ent->host_flags & (ATA_FLAG_SATA_RESET | ATA_FLAG_SRST))) {
+		printk(KERN_ERR "ata%u: no reset mechanism available\n",
+		       port_no);
+		return NULL;
+	}
+
 	host = scsi_host_alloc(ent->sht, sizeof(struct ata_port));
 	if (!host)
 		return NULL;
 
+	host->transportt = &ata_scsi_transport_template;
+
 	ap = (struct ata_port *) &host->hostdata[0];
 
 	ata_host_init(ap, host, host_set, ent, port_no);
@@ -4706,6 +4569,7 @@ int ata_device_add(const struct ata_probe_ent *ent)
 	host_set->mmio_base = ent->mmio_base;
 	host_set->private_data = ent->private_data;
 	host_set->ops = ent->port_ops;
+	host_set->flags = ent->host_set_flags;
 
 	/* register each port bound to this device */
 	for (i = 0; i < ent->n_ports; i++) {
@@ -4806,7 +4670,7 @@ err_free_ret:
  *	ata_host_set_remove - PCI layer callback for device removal
  *	@host_set: ATA host set that was removed
  *
- *	Unregister all objects associated with this host set. Free those 
+ *	Unregister all objects associated with this host set. Free those
  *	objects.
  *
  *	LOCKING:
@@ -5061,6 +4925,7 @@ EXPORT_SYMBOL_GPL(ata_port_stop);
 EXPORT_SYMBOL_GPL(ata_host_stop);
 EXPORT_SYMBOL_GPL(ata_interrupt);
 EXPORT_SYMBOL_GPL(ata_qc_prep);
+EXPORT_SYMBOL_GPL(ata_noop_qc_prep);
 EXPORT_SYMBOL_GPL(ata_bmdma_setup);
 EXPORT_SYMBOL_GPL(ata_bmdma_start);
 EXPORT_SYMBOL_GPL(ata_bmdma_irq_clear);
@@ -5077,18 +4942,17 @@ EXPORT_SYMBOL_GPL(ata_std_postreset);
 EXPORT_SYMBOL_GPL(ata_std_probe_reset);
 EXPORT_SYMBOL_GPL(ata_drive_probe_reset);
 EXPORT_SYMBOL_GPL(ata_dev_revalidate);
+EXPORT_SYMBOL_GPL(ata_dev_classify);
+EXPORT_SYMBOL_GPL(ata_dev_pair);
 EXPORT_SYMBOL_GPL(ata_port_disable);
 EXPORT_SYMBOL_GPL(ata_ratelimit);
 EXPORT_SYMBOL_GPL(ata_busy_sleep);
 EXPORT_SYMBOL_GPL(ata_port_queue_task);
 EXPORT_SYMBOL_GPL(ata_scsi_ioctl);
 EXPORT_SYMBOL_GPL(ata_scsi_queuecmd);
-EXPORT_SYMBOL_GPL(ata_scsi_timed_out);
-EXPORT_SYMBOL_GPL(ata_scsi_error);
 EXPORT_SYMBOL_GPL(ata_scsi_slave_config);
 EXPORT_SYMBOL_GPL(ata_scsi_release);
 EXPORT_SYMBOL_GPL(ata_host_intr);
-EXPORT_SYMBOL_GPL(ata_dev_classify);
 EXPORT_SYMBOL_GPL(ata_id_string);
 EXPORT_SYMBOL_GPL(ata_id_c_string);
 EXPORT_SYMBOL_GPL(ata_scsi_simulate);
@@ -5107,6 +4971,8 @@ EXPORT_SYMBOL_GPL(ata_pci_init_one);
 EXPORT_SYMBOL_GPL(ata_pci_remove_one);
 EXPORT_SYMBOL_GPL(ata_pci_device_suspend);
 EXPORT_SYMBOL_GPL(ata_pci_device_resume);
+EXPORT_SYMBOL_GPL(ata_pci_default_filter);
+EXPORT_SYMBOL_GPL(ata_pci_clear_simplex);
 #endif /* CONFIG_PCI */
 
 EXPORT_SYMBOL_GPL(ata_device_suspend);