Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: (21 commits)
  libata: bump transfer chunk size if it's odd
  libata: Return proper ATA INT status in pata_bf54x driver
  pata_ali: trim trailing whitespace (fix checkpatch complaints)
  pata_isapnp: Polled devices
  pata_hpt37x: Fix cable detect bug spotted by Sergei
  pata_ali: Lots of problems still showing up with small ATAPI DMA
  pata_ali: Add Mitac 8317 and derivatives
  libata-core: List more documentation sources for reference
  ata_piix: Invalid use of writel/readl with iomap
  sata_sil24: fix sg table sizing
  pata_jmicron: fix disabled port handling in jmicron_pre_reset()
  pata_sil680: kill bogus reset code (take 2)
  ata_piix: port enable for the first SATA controller of ICH8 is 0xf not 0x3
  ata_piix: only enable the first port on apple macbook pro
  ata_piix: reorganize controller IDs
  pata_sis.c: Add Packard Bell EasyNote K5305 to laptops
  libata-scsi: be tolerant of 12-byte ATAPI commands in 16-byte CDBs
  libata: use ATA_HORKAGE_STUCK_ERR for ATAPI tape drives
  libata: workaround DRQ=1 ERR=1 for ATAPI tape drives
  libata: remove unused functions
  ...

12 files changed, 183 insertions, 258 deletions

diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
index 328ce8a0842..483269db2c7 100644
--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -119,18 +119,19 @@ enum {
 	PIIX_80C_SEC		= (1 << 7) | (1 << 6),
 
 	/* controller IDs */
-	piix_pata_33		= 0,	/* PIIX4 at 33Mhz */
-	ich_pata_33		= 1,	/* ICH up to UDMA 33 only */
-	ich_pata_66		= 2,	/* ICH up to 66 Mhz */
-	ich_pata_100		= 3,	/* ICH up to UDMA 100 */
-	ich5_sata		= 5,
-	ich6_sata		= 6,
-	ich6_sata_ahci		= 7,
-	ich6m_sata_ahci		= 8,
-	ich8_sata_ahci		= 9,
-	piix_pata_mwdma		= 10,	/* PIIX3 MWDMA only */
-	tolapai_sata_ahci	= 11,
-	ich9_2port_sata		= 12,
+	piix_pata_mwdma		= 0,	/* PIIX3 MWDMA only */
+	piix_pata_33,			/* PIIX4 at 33Mhz */
+	ich_pata_33,			/* ICH up to UDMA 33 only */
+	ich_pata_66,			/* ICH up to 66 Mhz */
+	ich_pata_100,			/* ICH up to UDMA 100 */
+	ich5_sata,
+	ich6_sata,
+	ich6_sata_ahci,
+	ich6m_sata_ahci,
+	ich8_sata_ahci,
+	ich8_2port_sata,
+	ich8m_apple_sata_ahci,		/* locks up on second port enable */
+	tolapai_sata_ahci,
 
 	/* constants for mapping table */
 	P0			= 0,  /* port 0 */
@@ -239,19 +240,21 @@ static const struct pci_device_id piix_pci_tbl[] = {
 	/* SATA Controller 1 IDE (ICH8) */
 	{ 0x8086, 0x2820, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
 	/* SATA Controller 2 IDE (ICH8) */
-	{ 0x8086, 0x2825, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich9_2port_sata },
+	{ 0x8086, 0x2825, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
 	/* Mobile SATA Controller IDE (ICH8M) */
 	{ 0x8086, 0x2828, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
+	/* Mobile SATA Controller IDE (ICH8M), Apple */
+	{ 0x8086, 0x2828, 0x106b, 0x00a0, 0, 0, ich8m_apple_sata_ahci },
 	/* SATA Controller IDE (ICH9) */
 	{ 0x8086, 0x2920, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
 	/* SATA Controller IDE (ICH9) */
-	{ 0x8086, 0x2921, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich9_2port_sata },
+	{ 0x8086, 0x2921, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
 	/* SATA Controller IDE (ICH9) */
-	{ 0x8086, 0x2926, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich9_2port_sata },
+	{ 0x8086, 0x2926, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
 	/* SATA Controller IDE (ICH9M) */
-	{ 0x8086, 0x2928, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich9_2port_sata },
+	{ 0x8086, 0x2928, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
 	/* SATA Controller IDE (ICH9M) */
-	{ 0x8086, 0x292d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich9_2port_sata },
+	{ 0x8086, 0x292d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
 	/* SATA Controller IDE (ICH9M) */
 	{ 0x8086, 0x292e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
 	/* SATA Controller IDE (Tolapai) */
@@ -427,7 +430,7 @@ static const struct piix_map_db ich6m_map_db = {
 
 static const struct piix_map_db ich8_map_db = {
 	.mask = 0x3,
-	.port_enable = 0x3,
+	.port_enable = 0xf,
 	.map = {
 		/* PM   PS   SM   SS       MAP */
 		{  P0,  P2,  P1,  P3 }, /* 00b (hardwired when in AHCI) */
@@ -437,7 +440,7 @@ static const struct piix_map_db ich8_map_db = {
 	},
 };
 
-static const struct piix_map_db tolapai_map_db = {
+static const struct piix_map_db ich8_2port_map_db = {
 	.mask = 0x3,
 	.port_enable = 0x3,
 	.map = {
@@ -449,7 +452,19 @@ static const struct piix_map_db tolapai_map_db = {
 	},
 };
 
-static const struct piix_map_db ich9_2port_map_db = {
+static const struct piix_map_db ich8m_apple_map_db = {
+	.mask = 0x3,
+	.port_enable = 0x1,
+	.map = {
+		/* PM   PS   SM   SS       MAP */
+		{  P0,  NA,  NA,  NA }, /* 00b */
+		{  RV,  RV,  RV,  RV },
+		{  P0,  P2, IDE, IDE }, /* 10b */
+		{  RV,  RV,  RV,  RV },
+	},
+};
+
+static const struct piix_map_db tolapai_map_db = {
 	.mask = 0x3,
 	.port_enable = 0x3,
 	.map = {
@@ -467,11 +482,21 @@ static const struct piix_map_db *piix_map_db_table[] = {
 	[ich6_sata_ahci]	= &ich6_map_db,
 	[ich6m_sata_ahci]	= &ich6m_map_db,
 	[ich8_sata_ahci]	= &ich8_map_db,
+	[ich8_2port_sata]	= &ich8_2port_map_db,
+	[ich8m_apple_sata_ahci]	= &ich8m_apple_map_db,
 	[tolapai_sata_ahci]	= &tolapai_map_db,
-	[ich9_2port_sata]	= &ich9_2port_map_db,
 };
 
 static struct ata_port_info piix_port_info[] = {
+	[piix_pata_mwdma] = 	/* PIIX3 MWDMA only */
+	{
+		.sht		= &piix_sht,
+		.flags		= PIIX_PATA_FLAGS,
+		.pio_mask	= 0x1f,	/* pio0-4 */
+		.mwdma_mask	= 0x06, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
+		.port_ops	= &piix_pata_ops,
+	},
+
 	[piix_pata_33] =	/* PIIX4 at 33MHz */
 	{
 		.sht		= &piix_sht,
@@ -565,13 +590,15 @@ static struct ata_port_info piix_port_info[] = {
 		.port_ops	= &piix_sata_ops,
 	},
 
-	[piix_pata_mwdma] = 	/* PIIX3 MWDMA only */
+	[ich8_2port_sata] =
 	{
 		.sht		= &piix_sht,
-		.flags		= PIIX_PATA_FLAGS,
+		.flags		= PIIX_SATA_FLAGS | PIIX_FLAG_SCR |
+				  PIIX_FLAG_AHCI,
 		.pio_mask	= 0x1f,	/* pio0-4 */
-		.mwdma_mask	= 0x06, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
-		.port_ops	= &piix_pata_ops,
+		.mwdma_mask	= 0x07, /* mwdma0-2 */
+		.udma_mask	= ATA_UDMA6,
+		.port_ops	= &piix_sata_ops,
 	},
 
 	[tolapai_sata_ahci] =
@@ -585,7 +612,7 @@ static struct ata_port_info piix_port_info[] = {
 		.port_ops	= &piix_sata_ops,
 	},
 
-	[ich9_2port_sata] =
+	[ich8m_apple_sata_ahci] =
 	{
 		.sht		= &piix_sht,
 		.flags		= PIIX_SATA_FLAGS | PIIX_FLAG_SCR |
@@ -595,6 +622,7 @@ static struct ata_port_info piix_port_info[] = {
 		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &piix_sata_ops,
 	},
+
 };
 
 static struct pci_bits piix_enable_bits[] = {
@@ -974,6 +1002,13 @@ static int piix_broken_suspend(void)
 			},
 		},
 		{
+			.ident = "SATELLITE U205",
+			.matches = {
+				DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
+				DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE U205"),
+			},
+		},
+		{
 			.ident = "Portege M500",
 			.matches = {
 				DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
@@ -1086,12 +1121,12 @@ static int piix_disable_ahci(struct pci_dev *pdev)
 	if (!mmio)
 		return -ENOMEM;
 
-	tmp = readl(mmio + AHCI_GLOBAL_CTL);
+	tmp = ioread32(mmio + AHCI_GLOBAL_CTL);
 	if (tmp & AHCI_ENABLE) {
 		tmp &= ~AHCI_ENABLE;
-		writel(tmp, mmio + AHCI_GLOBAL_CTL);
+		iowrite32(tmp, mmio + AHCI_GLOBAL_CTL);
 
-		tmp = readl(mmio + AHCI_GLOBAL_CTL);
+		tmp = ioread32(mmio + AHCI_GLOBAL_CTL);
 		if (tmp & AHCI_ENABLE)
 			rc = -EIO;
 	}
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 81898036dbc..33f06277b3b 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -30,6 +30,14 @@
  *  Hardware documentation available from http://www.t13.org/ and
  *  http://www.sata-io.org/
  *
+ *  Standards documents from:
+ *	http://www.t13.org (ATA standards, PCI DMA IDE spec)
+ *	http://www.t10.org (SCSI MMC - for ATAPI MMC)
+ *	http://www.sata-io.org (SATA)
+ *	http://www.compactflash.org (CF)
+ *	http://www.qic.org (QIC157 - Tape and DSC)
+ *	http://www.ce-ata.org (CE-ATA: not supported)
+ *
  */
 
 #include <linux/kernel.h>
@@ -2307,8 +2315,10 @@ int ata_dev_configure(struct ata_device *dev)
 	}
 
 	if ((dev->class == ATA_DEV_ATAPI) &&
-	    (atapi_command_packet_set(id) == TYPE_TAPE))
+	    (atapi_command_packet_set(id) == TYPE_TAPE)) {
 		dev->max_sectors = ATA_MAX_SECTORS_TAPE;
+		dev->horkage |= ATA_HORKAGE_STUCK_ERR;
+	}
 
 	if (dev->horkage & ATA_HORKAGE_MAX_SEC_128)
 		dev->max_sectors = min_t(unsigned int, ATA_MAX_SECTORS_128,
@@ -2581,81 +2591,6 @@ void sata_print_link_status(struct ata_link *link)
 }
 
 /**
- *	__sata_phy_reset - Wake/reset a low-level SATA PHY
- *	@ap: SATA port associated with target SATA PHY.
- *
- *	This function issues commands to standard SATA Sxxx
- *	PHY registers, to wake up the phy (and device), and
- *	clear any reset condition.
- *
- *	LOCKING:
- *	PCI/etc. bus probe sem.
- *
- */
-void __sata_phy_reset(struct ata_port *ap)
-{
-	struct ata_link *link = &ap->link;
-	unsigned long timeout = jiffies + (HZ * 5);
-	u32 sstatus;
-
-	if (ap->flags & ATA_FLAG_SATA_RESET) {
-		/* issue phy wake/reset */
-		sata_scr_write_flush(link, SCR_CONTROL, 0x301);
-		/* Couldn't find anything in SATA I/II specs, but
-		 * AHCI-1.1 10.4.2 says at least 1 ms. */
-		mdelay(1);
-	}
-	/* phy wake/clear reset */
-	sata_scr_write_flush(link, SCR_CONTROL, 0x300);
-
-	/* wait for phy to become ready, if necessary */
-	do {
-		msleep(200);
-		sata_scr_read(link, SCR_STATUS, &sstatus);
-		if ((sstatus & 0xf) != 1)
-			break;
-	} while (time_before(jiffies, timeout));
-
-	/* print link status */
-	sata_print_link_status(link);
-
-	/* TODO: phy layer with polling, timeouts, etc. */
-	if (!ata_link_offline(link))
-		ata_port_probe(ap);
-	else
-		ata_port_disable(ap);
-
-	if (ap->flags & ATA_FLAG_DISABLED)
-		return;
-
-	if (ata_busy_sleep(ap, ATA_TMOUT_BOOT_QUICK, ATA_TMOUT_BOOT)) {
-		ata_port_disable(ap);
-		return;
-	}
-
-	ap->cbl = ATA_CBL_SATA;
-}
-
-/**
- *	sata_phy_reset - Reset SATA bus.
- *	@ap: SATA port associated with target SATA PHY.
- *
- *	This function resets the SATA bus, and then probes
- *	the bus for devices.
- *
- *	LOCKING:
- *	PCI/etc. bus probe sem.
- *
- */
-void sata_phy_reset(struct ata_port *ap)
-{
-	__sata_phy_reset(ap);
-	if (ap->flags & ATA_FLAG_DISABLED)
-		return;
-	ata_bus_reset(ap);
-}
-
-/**
  *	ata_dev_pair		-	return other device on cable
  *	@adev: device
  *
@@ -5490,11 +5425,19 @@ fsm_start:
 		 * let the EH abort the command or reset the device.
 		 */
 		if (unlikely(status & (ATA_ERR | ATA_DF))) {
-			ata_port_printk(ap, KERN_WARNING, "DRQ=1 with device "
-					"error, dev_stat 0x%X\n", status);
-			qc->err_mask |= AC_ERR_HSM;
-			ap->hsm_task_state = HSM_ST_ERR;
-			goto fsm_start;
+			/* Some ATAPI tape drives forget to clear the ERR bit
+			 * when doing the next command (mostly request sense).
+			 * We ignore ERR here to workaround and proceed sending
+			 * the CDB.
+			 */
+			if (!(qc->dev->horkage & ATA_HORKAGE_STUCK_ERR)) {
+				ata_port_printk(ap, KERN_WARNING,
+						"DRQ=1 with device error, "
+						"dev_stat 0x%X\n", status);
+				qc->err_mask |= AC_ERR_HSM;
+				ap->hsm_task_state = HSM_ST_ERR;
+				goto fsm_start;
+			}
 		}
 
 		/* Send the CDB (atapi) or the first data block (ata pio out).
@@ -7653,8 +7596,6 @@ EXPORT_SYMBOL_GPL(ata_dev_disable);
 EXPORT_SYMBOL_GPL(sata_set_spd);
 EXPORT_SYMBOL_GPL(sata_link_debounce);
 EXPORT_SYMBOL_GPL(sata_link_resume);
-EXPORT_SYMBOL_GPL(sata_phy_reset);
-EXPORT_SYMBOL_GPL(__sata_phy_reset);
 EXPORT_SYMBOL_GPL(ata_bus_reset);
 EXPORT_SYMBOL_GPL(ata_std_prereset);
 EXPORT_SYMBOL_GPL(ata_std_softreset);
@@ -7725,7 +7666,6 @@ EXPORT_SYMBOL_GPL(ata_port_desc);
 #ifdef CONFIG_PCI
 EXPORT_SYMBOL_GPL(ata_port_pbar_desc);
 #endif /* CONFIG_PCI */
-EXPORT_SYMBOL_GPL(ata_eng_timeout);
 EXPORT_SYMBOL_GPL(ata_port_schedule_eh);
 EXPORT_SYMBOL_GPL(ata_link_abort);
 EXPORT_SYMBOL_GPL(ata_port_abort);
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index ed8813b222a..0dac69db1fd 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -559,101 +559,6 @@ void ata_port_wait_eh(struct ata_port *ap)
 	}
 }
 
-/**
- *	ata_qc_timeout - Handle timeout of queued command
- *	@qc: Command that timed out
- *
- *	Some part of the kernel (currently, only the SCSI layer)
- *	has noticed that the active command on port @ap has not
- *	completed after a specified length of time.  Handle this
- *	condition by disabling DMA (if necessary) and completing
- *	transactions, with error if necessary.
- *
- *	This also handles the case of the "lost interrupt", where
- *	for some reason (possibly hardware bug, possibly driver bug)
- *	an interrupt was not delivered to the driver, even though the
- *	transaction completed successfully.
- *
- *	TODO: kill this function once old EH is gone.
- *
- *	LOCKING:
- *	Inherited from SCSI layer (none, can sleep)
- */
-static void ata_qc_timeout(struct ata_queued_cmd *qc)
-{
-	struct ata_port *ap = qc->ap;
-	u8 host_stat = 0, drv_stat;
-	unsigned long flags;
-
-	DPRINTK("ENTER\n");
-
-	ap->hsm_task_state = HSM_ST_IDLE;
-
-	spin_lock_irqsave(ap->lock, flags);
-
-	switch (qc->tf.protocol) {
-
-	case ATA_PROT_DMA:
-	case ATA_PROT_ATAPI_DMA:
-		host_stat = ap->ops->bmdma_status(ap);
-
-		/* before we do anything else, clear DMA-Start bit */
-		ap->ops->bmdma_stop(qc);
-
-		/* fall through */
-
-	default:
-		ata_altstatus(ap);
-		drv_stat = ata_chk_status(ap);
-
-		/* ack bmdma irq events */
-		ap->ops->irq_clear(ap);
-
-		ata_dev_printk(qc->dev, KERN_ERR, "command 0x%x timeout, "
-			       "stat 0x%x host_stat 0x%x\n",
-			       qc->tf.command, drv_stat, host_stat);
-
-		/* complete taskfile transaction */
-		qc->err_mask |= AC_ERR_TIMEOUT;
-		break;
-	}
-
-	spin_unlock_irqrestore(ap->lock, flags);
-
-	ata_eh_qc_complete(qc);
-
-	DPRINTK("EXIT\n");
-}
-
-/**
- *	ata_eng_timeout - Handle timeout of queued command
- *	@ap: Port on which timed-out command is active
- *
- *	Some part of the kernel (currently, only the SCSI layer)
- *	has noticed that the active command on port @ap has not
- *	completed after a specified length of time.  Handle this
- *	condition by disabling DMA (if necessary) and completing
- *	transactions, with error if necessary.
- *
- *	This also handles the case of the "lost interrupt", where
- *	for some reason (possibly hardware bug, possibly driver bug)
- *	an interrupt was not delivered to the driver, even though the
- *	transaction completed successfully.
- *
- *	TODO: kill this function once old EH is gone.
- *
- *	LOCKING:
- *	Inherited from SCSI layer (none, can sleep)
- */
-void ata_eng_timeout(struct ata_port *ap)
-{
-	DPRINTK("ENTER\n");
-
-	ata_qc_timeout(ata_qc_from_tag(ap, ap->link.active_tag));
-
-	DPRINTK("EXIT\n");
-}
-
 static int ata_eh_nr_in_flight(struct ata_port *ap)
 {
 	unsigned int tag;
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 94144ed50a6..a883bb03d4c 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -2485,11 +2485,40 @@ static unsigned int atapi_xlat(struct ata_queued_cmd *qc)
 	if (!using_pio && ata_check_atapi_dma(qc))
 		using_pio = 1;
 
-	/* Some controller variants snoop this value for Packet transfers
-	   to do state machine and FIFO management. Thus we want to set it
-	   properly, and for DMA where it is effectively meaningless */
+	/* Some controller variants snoop this value for Packet
+	 * transfers to do state machine and FIFO management.  Thus we
+	 * want to set it properly, and for DMA where it is
+	 * effectively meaningless.
+	 */
 	nbytes = min(qc->nbytes, (unsigned int)63 * 1024);
 
+	/* Most ATAPI devices which honor transfer chunk size don't
+	 * behave according to the spec when odd chunk size which
+	 * matches the transfer length is specified.  If the number of
+	 * bytes to transfer is 2n+1.  According to the spec, what
+	 * should happen is to indicate that 2n+1 is going to be
+	 * transferred and transfer 2n+2 bytes where the last byte is
+	 * padding.
+	 *
+	 * In practice, this doesn't happen.  ATAPI devices first
+	 * indicate and transfer 2n bytes and then indicate and
+	 * transfer 2 bytes where the last byte is padding.
+	 *
+	 * This inconsistency confuses several controllers which
+	 * perform PIO using DMA such as Intel AHCIs and sil3124/32.
+	 * These controllers use actual number of transferred bytes to
+	 * update DMA poitner and transfer of 4n+2 bytes make those
+	 * controller push DMA pointer by 4n+4 bytes because SATA data
+	 * FISes are aligned to 4 bytes.  This causes data corruption
+	 * and buffer overrun.
+	 *
+	 * Always setting nbytes to even number solves this problem
+	 * because then ATAPI devices don't have to split data at 2n
+	 * boundaries.
+	 */
+	if (nbytes & 0x1)
+		nbytes++;
+
 	qc->tf.lbam = (nbytes & 0xFF);
 	qc->tf.lbah = (nbytes >> 8);
 
@@ -2869,7 +2898,8 @@ static inline int __ata_scsi_queuecmd(struct scsi_cmnd *scmd,
 		xlat_func = NULL;
 		if (likely((scsi_op != ATA_16) || !atapi_passthru16)) {
 			/* relay SCSI command to ATAPI device */
-			if (unlikely(scmd->cmd_len > dev->cdb_len))
+			int len = COMMAND_SIZE(scsi_op);
+			if (unlikely(len > scmd->cmd_len || len > dev->cdb_len))
 				goto bad_cdb_len;
 
 			xlat_func = atapi_xlat;
diff --git a/drivers/ata/pata_ali.c b/drivers/ata/pata_ali.c
index 364534e7aff..8caf9afc8b9 100644
--- a/drivers/ata/pata_ali.c
+++ b/drivers/ata/pata_ali.c
@@ -63,6 +63,9 @@ static int ali_cable_override(struct pci_dev *pdev)
 	/* Fujitsu P2000 */
 	if (pdev->subsystem_vendor == 0x10CF && pdev->subsystem_device == 0x10AF)
 	   	return 1;
+	/* Mitac 8317 (Winbook-A) and relatives */
+	if (pdev->subsystem_vendor == 0x1071  && pdev->subsystem_device == 0x8317)
+		return 1;
 	/* Systems by DMI */
 	if (dmi_check_system(cable_dmi_table))
 		return 1;
@@ -282,6 +285,21 @@ static void ali_lock_sectors(struct ata_device *adev)
 	adev->max_sectors = 255;
 }
 
+/**
+ *	ali_check_atapi_dma	-	DMA check for most ALi controllers
+ *	@adev: Device
+ *
+ *	Called to decide whether commands should be sent by DMA or PIO
+ */
+
+static int ali_check_atapi_dma(struct ata_queued_cmd *qc)
+{
+	/* If its not a media command, its not worth it */
+	if (qc->nbytes < 2048)
+		return -EOPNOTSUPP;
+	return 0;
+}
+
 static struct scsi_host_template ali_sht = {
 	.module			= THIS_MODULE,
 	.name			= DRV_NAME,
@@ -378,6 +396,7 @@ static struct ata_port_operations ali_c2_port_ops = {
 	.mode_filter	= ata_pci_default_filter,
 	.tf_load	= ata_tf_load,
 	.tf_read	= ata_tf_read,
+	.check_atapi_dma = ali_check_atapi_dma,
 	.check_status 	= ata_check_status,
 	.exec_command	= ata_exec_command,
 	.dev_select 	= ata_std_dev_select,
@@ -415,6 +434,7 @@ static struct ata_port_operations ali_c5_port_ops = {
 	.mode_filter	= ata_pci_default_filter,
 	.tf_load	= ata_tf_load,
 	.tf_read	= ata_tf_read,
+	.check_atapi_dma = ali_check_atapi_dma,
 	.check_status 	= ata_check_status,
 	.exec_command	= ata_exec_command,
 	.dev_select 	= ata_std_dev_select,
diff --git a/drivers/ata/pata_bf54x.c b/drivers/ata/pata_bf54x.c
index b5e38426b81..81db405a544 100644
--- a/drivers/ata/pata_bf54x.c
+++ b/drivers/ata/pata_bf54x.c
@@ -1145,13 +1145,13 @@ static unsigned char bfin_bmdma_status(struct ata_port *ap)
 	unsigned short int_status = ATAPI_GET_INT_STATUS(base);
 
 	if (ATAPI_GET_STATUS(base) & (MULTI_XFER_ON|ULTRA_XFER_ON)) {
-		host_stat = ATA_DMA_ACTIVE;
+		host_stat |= ATA_DMA_ACTIVE;
 	}
 	if (int_status & (MULTI_DONE_INT|UDMAIN_DONE_INT|UDMAOUT_DONE_INT)) {
-		host_stat = ATA_DMA_INTR;
+		host_stat |= ATA_DMA_INTR;
 	}
 	if (int_status & (MULTI_TERM_INT|UDMAIN_TERM_INT|UDMAOUT_TERM_INT)) {
-		host_stat = ATA_DMA_ERR;
+		host_stat |= ATA_DMA_ERR;
 	}
 
 	return host_stat;
diff --git a/drivers/ata/pata_hpt37x.c b/drivers/ata/pata_hpt37x.c
index 3816b8605e0..46dc70e0dee 100644
--- a/drivers/ata/pata_hpt37x.c
+++ b/drivers/ata/pata_hpt37x.c
@@ -329,7 +329,7 @@ static int hpt37x_pre_reset(struct ata_link *link, unsigned long deadline)
 	/* Restore state */
 	pci_write_config_byte(pdev, 0x5B, scr2);
 
-	if (ata66 & (1 << ap->port_no))
+	if (ata66 & (2 >> ap->port_no))
 		ap->cbl = ATA_CBL_PATA40;
 	else
 		ap->cbl = ATA_CBL_PATA80;
diff --git a/drivers/ata/pata_isapnp.c b/drivers/ata/pata_isapnp.c
index 88ab0e1d353..4320e798632 100644
--- a/drivers/ata/pata_isapnp.c
+++ b/drivers/ata/pata_isapnp.c
@@ -75,13 +75,16 @@ static int isapnp_init_one(struct pnp_dev *idev, const struct pnp_device_id *dev
 	struct ata_host *host;
 	struct ata_port *ap;
 	void __iomem *cmd_addr, *ctl_addr;
+	int irq = 0;
+	irq_handler_t handler = NULL;
 
 	if (pnp_port_valid(idev, 0) == 0)
 		return -ENODEV;
 
-	/* FIXME: Should selected polled PIO here not fail */
-	if (pnp_irq_valid(idev, 0) == 0)
-		return -ENODEV;
+	if (pnp_irq_valid(idev, 0)) {
+		irq = pnp_irq(idev, 0);
+		handler = ata_interrupt;
+	}
 
 	/* allocate host */
 	host = ata_host_alloc(&idev->dev, 1);
@@ -115,7 +118,7 @@ static int isapnp_init_one(struct pnp_dev *idev, const struct pnp_device_id *dev
 		      (unsigned long long)pnp_port_start(idev, 1));
 
 	/* activate */
-	return ata_host_activate(host, pnp_irq(idev, 0), ata_interrupt, 0,
+	return ata_host_activate(host, irq, handler, 0,
 				 &isapnp_sht);
 }
 
diff --git a/drivers/ata/pata_jmicron.c b/drivers/ata/pata_jmicron.c
index 225a7223a72..5b8174d9406 100644
--- a/drivers/ata/pata_jmicron.c
+++ b/drivers/ata/pata_jmicron.c
@@ -80,11 +80,10 @@ static int jmicron_pre_reset(struct ata_link *link, unsigned long deadline)
 	 *	actually do our cable checking etc. Thankfully we don't need
 	 *	to do the plumbing for other cases.
 	 */
-	switch (port_map[port])
-	{
+	switch (port_map[port]) {
 	case PORT_PATA0:
-		if (control & (1 << 5))
-			return 0;
+		if ((control & (1 << 5)) == 0)
+			return -ENOENT;
 		if (control & (1 << 3))	/* 40/80 pin primary */
 			ap->cbl = ATA_CBL_PATA40;
 		else
@@ -93,7 +92,7 @@ static int jmicron_pre_reset(struct ata_link *link, unsigned long deadline)
 	case PORT_PATA1:
 		/* Bit 21 is set if the port is enabled */
 		if ((control5 & (1 << 21)) == 0)
-			return 0;
+			return -ENOENT;
 		if (control5 & (1 << 19))	/* 40/80 pin secondary */
 			ap->cbl = ATA_CBL_PATA40;
 		else
diff --git a/drivers/ata/pata_sil680.c b/drivers/ata/pata_sil680.c
index 5c1e9cb59ec..503245a1eaf 100644
--- a/drivers/ata/pata_sil680.c
+++ b/drivers/ata/pata_sil680.c
@@ -33,7 +33,7 @@
 #include <linux/libata.h>
 
 #define DRV_NAME "pata_sil680"
-#define DRV_VERSION "0.4.7"
+#define DRV_VERSION "0.4.8"
 
 #define SIL680_MMIO_BAR		5
 
@@ -94,34 +94,6 @@ static int sil680_cable_detect(struct ata_port *ap) {
 }
 
 /**
- *	sil680_bus_reset	-	reset the SIL680 bus
- *	@link: ATA link to reset
- *	@deadline: deadline jiffies for the operation
- *
- *	Perform the SIL680 housekeeping when doing an ATA bus reset
- */
-
-static int sil680_bus_reset(struct ata_link *link, unsigned int *classes,
-			    unsigned long deadline)
-{
-	struct ata_port *ap = link->ap;
-	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
-	unsigned long addr = sil680_selreg(ap, 0);
-	u8 reset;
-
-	pci_read_config_byte(pdev, addr, &reset);
-	pci_write_config_byte(pdev, addr, reset | 0x03);
-	udelay(25);
-	pci_write_config_byte(pdev, addr, reset);
-	return ata_std_softreset(link, classes, deadline);
-}
-
-static void sil680_error_handler(struct ata_port *ap)
-{
-	ata_bmdma_drive_eh(ap, ata_std_prereset, sil680_bus_reset, NULL, ata_std_postreset);
-}
-
-/**
  *	sil680_set_piomode	-	set initial PIO mode data
  *	@ap: ATA interface
  *	@adev: ATA device
@@ -249,7 +221,7 @@ static struct ata_port_operations sil680_port_ops = {
 
 	.freeze		= ata_bmdma_freeze,
 	.thaw		= ata_bmdma_thaw,
-	.error_handler	= sil680_error_handler,
+	.error_handler	= ata_bmdma_error_handler,
 	.post_internal_cmd = ata_bmdma_post_internal_cmd,
 	.cable_detect	= sil680_cable_detect,
 
diff --git a/drivers/ata/pata_sis.c b/drivers/ata/pata_sis.c
index 3b5be77e861..87546d9f1ca 100644
--- a/drivers/ata/pata_sis.c
+++ b/drivers/ata/pata_sis.c
@@ -55,6 +55,7 @@ static const struct sis_laptop sis_laptop[] = {
 	/* devid, subvendor, subdev */
 	{ 0x5513, 0x1043, 0x1107 },	/* ASUS A6K */
 	{ 0x5513, 0x1734, 0x105F },	/* FSC Amilo A1630 */
+	{ 0x5513, 0x1071, 0x8640 },     /* EasyNote K5305 */
 	/* end marker */
 	{ 0, }
 };
diff --git a/drivers/ata/sata_sil24.c b/drivers/ata/sata_sil24.c
index 187dcb02c68..96fd5260446 100644
--- a/drivers/ata/sata_sil24.c
+++ b/drivers/ata/sata_sil24.c
@@ -63,6 +63,21 @@ enum {
 	SIL24_HOST_BAR		= 0,
 	SIL24_PORT_BAR		= 2,
 
+	/* sil24 fetches in chunks of 64bytes.  The first block
+	 * contains the PRB and two SGEs.  From the second block, it's
+	 * consisted of four SGEs and called SGT.  Calculate the
+	 * number of SGTs that fit into one page.
+	 */
+	SIL24_PRB_SZ		= sizeof(struct sil24_prb)
+				  + 2 * sizeof(struct sil24_sge),
+	SIL24_MAX_SGT		= (PAGE_SIZE - SIL24_PRB_SZ)
+				  / (4 * sizeof(struct sil24_sge)),
+
+	/* This will give us one unused SGEs for ATA.  This extra SGE
+	 * will be used to store CDB for ATAPI devices.
+	 */
+	SIL24_MAX_SGE		= 4 * SIL24_MAX_SGT + 1,
+
 	/*
 	 * Global controller registers (128 bytes @ BAR0)
 	 */
@@ -247,13 +262,13 @@ enum {
 
 struct sil24_ata_block {
 	struct sil24_prb prb;
-	struct sil24_sge sge[LIBATA_MAX_PRD];
+	struct sil24_sge sge[SIL24_MAX_SGE];
 };
 
 struct sil24_atapi_block {
 	struct sil24_prb prb;
 	u8 cdb[16];
-	struct sil24_sge sge[LIBATA_MAX_PRD - 1];
+	struct sil24_sge sge[SIL24_MAX_SGE];
 };
 
 union sil24_cmd_block {
@@ -378,7 +393,7 @@ static struct scsi_host_template sil24_sht = {
 	.change_queue_depth	= ata_scsi_change_queue_depth,
 	.can_queue		= SIL24_MAX_CMDS,
 	.this_id		= ATA_SHT_THIS_ID,
-	.sg_tablesize		= LIBATA_MAX_PRD,
+	.sg_tablesize		= SIL24_MAX_SGE,
 	.cmd_per_lun		= ATA_SHT_CMD_PER_LUN,
 	.emulated		= ATA_SHT_EMULATED,
 	.use_clustering		= ATA_SHT_USE_CLUSTERING,
@@ -1284,6 +1299,7 @@ static void sil24_init_controller(struct ata_host *host)
 
 static int sil24_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 {
+	extern int __MARKER__sil24_cmd_block_is_sized_wrongly;
 	static int printed_version;
 	struct ata_port_info pi = sil24_port_info[ent->driver_data];
 	const struct ata_port_info *ppi[] = { &pi, NULL };
@@ -1292,6 +1308,10 @@ static int sil24_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 	int i, rc;
 	u32 tmp;
 
+	/* cause link error if sil24_cmd_block is sized wrongly */
+	if (sizeof(union sil24_cmd_block) != PAGE_SIZE)
+		__MARKER__sil24_cmd_block_is_sized_wrongly = 1;
+
 	if (!printed_version++)
 		dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");