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: (35 commits)
  [libata] Improve timeout handling
  [libata] Drain data on errors
  pata_sc1200: Activate secondary channel
  pata_artop: Serializing support
  [libata] ahci: correct enclosure LED state save
  [libata] More robust parsing for IDENTIFY DEVICE multi_count field
  sata_mv: fix LED blinking for SoC+NCQ
  sata_mv: optimize IRQ coalescing for 8-port chips
  sata_mv: implement IRQ coalescing (v2)
  sata_mv: cosmetic preparations for IRQ coalescing
  pata-rb532-cf: platform_get_irq() fix ignored failure
  pata_efar: fix *dma_mask
  pata_radisys: fix mwdma_mask to exclude mwdma0
  [libata] convert drivers to use ata.h mode mask defines
  include/linux/ata.h: add some more transfer masks
  ahci: Blacklist HP Compaq 6720s that spins off disks during ACPI power off
  [libata] sata_mv: Implement direct FIS transmission via mv_qc_issue_fis().
  [libata] Export ata_pio_queue_task() so that it can be used from sata_mv.
  [libata] sata_mv: Add a new mv_sff_check_status() function to sata_mv.
  [libata] sata_mv: Tighten up interrupt masking in mv_qc_issue()
  ...

drivers/ata/ahci.c

@@ -404,7 +404,7 @@ static const struct ata_port_info ahci_port_info[] = {
 	/* board_ahci */
 	{
 		.flags		= AHCI_FLAG_COMMON,
-		.pio_mask	= 0x1f, /* pio0-4 */
+		.pio_mask	= ATA_PIO4,
 		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &ahci_ops,
 	},
@@ -412,7 +412,7 @@ static const struct ata_port_info ahci_port_info[] = {
 	{
 		AHCI_HFLAGS	(AHCI_HFLAG_NO_NCQ | AHCI_HFLAG_NO_PMP),
 		.flags		= AHCI_FLAG_COMMON,
-		.pio_mask	= 0x1f, /* pio0-4 */
+		.pio_mask	= ATA_PIO4,
 		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &ahci_vt8251_ops,
 	},
@@ -420,7 +420,7 @@ static const struct ata_port_info ahci_port_info[] = {
 	{
 		AHCI_HFLAGS	(AHCI_HFLAG_IGN_IRQ_IF_ERR),
 		.flags		= AHCI_FLAG_COMMON,
-		.pio_mask	= 0x1f, /* pio0-4 */
+		.pio_mask	= ATA_PIO4,
 		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &ahci_ops,
 	},
@@ -430,7 +430,7 @@ static const struct ata_port_info ahci_port_info[] = {
 				 AHCI_HFLAG_32BIT_ONLY | AHCI_HFLAG_NO_MSI |
 				 AHCI_HFLAG_SECT255),
 		.flags		= AHCI_FLAG_COMMON,
-		.pio_mask	= 0x1f, /* pio0-4 */
+		.pio_mask	= ATA_PIO4,
 		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &ahci_sb600_ops,
 	},
@@ -440,7 +440,7 @@ static const struct ata_port_info ahci_port_info[] = {
 				 AHCI_HFLAG_MV_PATA | AHCI_HFLAG_NO_PMP),
 		.flags		= ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
 				  ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
-		.pio_mask	= 0x1f, /* pio0-4 */
+		.pio_mask	= ATA_PIO4,
 		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &ahci_ops,
 	},
@@ -448,7 +448,7 @@ static const struct ata_port_info ahci_port_info[] = {
 	{
 		AHCI_HFLAGS	(AHCI_HFLAG_IGN_SERR_INTERNAL),
 		.flags		= AHCI_FLAG_COMMON,
-		.pio_mask	= 0x1f, /* pio0-4 */
+		.pio_mask	= ATA_PIO4,
 		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &ahci_sb600_ops,
 	},
@@ -456,7 +456,7 @@ static const struct ata_port_info ahci_port_info[] = {
 	{
 		AHCI_HFLAGS	(AHCI_HFLAG_YES_NCQ),
 		.flags		= AHCI_FLAG_COMMON,
-		.pio_mask	= 0x1f, /* pio0-4 */
+		.pio_mask	= ATA_PIO4,
 		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &ahci_ops,
 	},
@@ -464,7 +464,7 @@ static const struct ata_port_info ahci_port_info[] = {
 	{
 		AHCI_HFLAGS	(AHCI_HFLAG_NO_PMP),
 		.flags		= AHCI_FLAG_COMMON,
-		.pio_mask	= 0x1f, /* pio0-4 */
+		.pio_mask	= ATA_PIO4,
 		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &ahci_ops,
 	},
@@ -1348,7 +1348,7 @@ static ssize_t ahci_transmit_led_message(struct ata_port *ap, u32 state,
 	writel(message[1], mmio + hpriv->em_loc+4);
 
 	/* save off new led state for port/slot */
-	emp->led_state = message[1];
+	emp->led_state = state;
 
 	/*
 	 * tell hardware to transmit the message
@@ -2565,6 +2565,15 @@ static bool ahci_broken_system_poweroff(struct pci_dev *pdev)
 			/* PCI slot number of the controller */
 			.driver_data = (void *)0x1FUL,
 		},
+		{
+			.ident = "HP Compaq 6720s",
+			.matches = {
+				DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+				DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6720s"),
+			},
+			/* PCI slot number of the controller */
+			.driver_data = (void *)0x1FUL,
+		},
 
 		{ }	/* terminate list */
 	};
@@ -2647,8 +2656,8 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 	if (board_id == board_ahci_sb700 && pdev->revision >= 0x40)
 		hpriv->flags &= ~AHCI_HFLAG_IGN_SERR_INTERNAL;
 
-	if ((hpriv->flags & AHCI_HFLAG_NO_MSI) || pci_enable_msi(pdev))
+	if (!(hpriv->flags & AHCI_HFLAG_NO_MSI))
-		pci_intx(pdev, 1);
+		pci_enable_msi(pdev);
 
 	/* save initial config */
 	ahci_save_initial_config(pdev, hpriv);

drivers/ata/ata_generic.c

@@ -118,8 +118,8 @@ static int ata_generic_init_one(struct pci_dev *dev, const struct pci_device_id
 	u16 command;
 	static const struct ata_port_info info = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
 		.udma_mask = ATA_UDMA5,
 		.port_ops = &generic_port_ops
 	};

drivers/ata/ata_piix.c

@@ -446,34 +446,34 @@ static struct ata_port_info piix_port_info[] = {
 	[piix_pata_mwdma] = 	/* PIIX3 MWDMA only */
 	{
 		.flags		= PIIX_PATA_FLAGS,
-		.pio_mask	= 0x1f,	/* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x06, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
+		.mwdma_mask	= ATA_MWDMA12_ONLY, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
 		.port_ops	= &piix_pata_ops,
 	},
 
 	[piix_pata_33] =	/* PIIX4 at 33MHz */
 	{
 		.flags		= PIIX_PATA_FLAGS,
-		.pio_mask	= 0x1f,	/* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x06, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
+		.mwdma_mask	= ATA_MWDMA12_ONLY, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
-		.udma_mask	= ATA_UDMA_MASK_40C,
+		.udma_mask	= ATA_UDMA2,
 		.port_ops	= &piix_pata_ops,
 	},
 
 	[ich_pata_33] = 	/* ICH0 - ICH at 33Mhz*/
 	{
 		.flags		= PIIX_PATA_FLAGS,
-		.pio_mask 	= 0x1f,	/* pio 0-4 */
+		.pio_mask 	= ATA_PIO4,
-		.mwdma_mask	= 0x06, /* Check: maybe 0x07  */
+		.mwdma_mask	= ATA_MWDMA12_ONLY, /* Check: maybe MWDMA0 is ok  */
-		.udma_mask	= ATA_UDMA2, /* UDMA33 */
+		.udma_mask	= ATA_UDMA2,
 		.port_ops	= &ich_pata_ops,
 	},
 
 	[ich_pata_66] = 	/* ICH controllers up to 66MHz */
 	{
 		.flags		= PIIX_PATA_FLAGS,
-		.pio_mask 	= 0x1f,	/* pio 0-4 */
+		.pio_mask 	= ATA_PIO4,
-		.mwdma_mask	= 0x06, /* MWDMA0 is broken on chip */
+		.mwdma_mask	= ATA_MWDMA12_ONLY, /* MWDMA0 is broken on chip */
 		.udma_mask	= ATA_UDMA4,
 		.port_ops	= &ich_pata_ops,
 	},
@@ -481,17 +481,17 @@ static struct ata_port_info piix_port_info[] = {
 	[ich_pata_100] =
 	{
 		.flags		= PIIX_PATA_FLAGS | PIIX_FLAG_CHECKINTR,
-		.pio_mask	= 0x1f,	/* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x06, /* mwdma1-2 */
+		.mwdma_mask	= ATA_MWDMA12_ONLY,
-		.udma_mask	= ATA_UDMA5, /* udma0-5 */
+		.udma_mask	= ATA_UDMA5,
 		.port_ops	= &ich_pata_ops,
 	},
 
 	[ich5_sata] =
 	{
 		.flags		= PIIX_SATA_FLAGS,
-		.pio_mask	= 0x1f,	/* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07, /* mwdma0-2 */
+		.mwdma_mask	= ATA_MWDMA2,
 		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &piix_sata_ops,
 	},
@@ -499,8 +499,8 @@ static struct ata_port_info piix_port_info[] = {
 	[ich6_sata] =
 	{
 		.flags		= PIIX_SATA_FLAGS,
-		.pio_mask	= 0x1f,	/* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07, /* mwdma0-2 */
+		.mwdma_mask	= ATA_MWDMA2,
 		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &piix_sata_ops,
 	},
@@ -508,8 +508,8 @@ static struct ata_port_info piix_port_info[] = {
 	[ich6m_sata] =
 	{
 		.flags		= PIIX_SATA_FLAGS,
-		.pio_mask	= 0x1f,	/* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07, /* mwdma0-2 */
+		.mwdma_mask	= ATA_MWDMA2,
 		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &piix_sata_ops,
 	},
@@ -517,8 +517,8 @@ static struct ata_port_info piix_port_info[] = {
 	[ich8_sata] =
 	{
 		.flags		= PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR,
-		.pio_mask	= 0x1f,	/* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07, /* mwdma0-2 */
+		.mwdma_mask	= ATA_MWDMA2,
 		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &piix_sata_ops,
 	},
@@ -526,8 +526,8 @@ static struct ata_port_info piix_port_info[] = {
 	[ich8_2port_sata] =
 	{
 		.flags		= PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR,
-		.pio_mask	= 0x1f,	/* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07, /* mwdma0-2 */
+		.mwdma_mask	= ATA_MWDMA2,
 		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &piix_sata_ops,
 	},
@@ -535,8 +535,8 @@ static struct ata_port_info piix_port_info[] = {
 	[tolapai_sata] =
 	{
 		.flags		= PIIX_SATA_FLAGS,
-		.pio_mask	= 0x1f,	/* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07, /* mwdma0-2 */
+		.mwdma_mask	= ATA_MWDMA2,
 		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &piix_sata_ops,
 	},
@@ -544,8 +544,8 @@ static struct ata_port_info piix_port_info[] = {
 	[ich8m_apple_sata] =
 	{
 		.flags		= PIIX_SATA_FLAGS,
-		.pio_mask	= 0x1f,	/* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07, /* mwdma0-2 */
+		.mwdma_mask	= ATA_MWDMA2,
 		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &piix_sata_ops,
 	},
@@ -553,9 +553,9 @@ static struct ata_port_info piix_port_info[] = {
 	[piix_pata_vmw] =
 	{
 		.flags		= PIIX_PATA_FLAGS,
-		.pio_mask	= 0x1f,	/* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x06, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
+		.mwdma_mask	= ATA_MWDMA12_ONLY, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
-		.udma_mask	= ATA_UDMA_MASK_40C,
+		.udma_mask	= ATA_UDMA2,
 		.port_ops	= &piix_vmw_ops,
 	},
 

drivers/ata/libata-core.c

@@ -57,6 +57,7 @@
 #include <linux/scatterlist.h>
 #include <linux/io.h>
 #include <linux/async.h>
+#include <linux/log2.h>
 #include <scsi/scsi.h>
 #include <scsi/scsi_cmnd.h>
 #include <scsi/scsi_host.h>
@@ -2389,6 +2390,7 @@ int ata_dev_configure(struct ata_device *dev)
 	dev->cylinders = 0;
 	dev->heads = 0;
 	dev->sectors = 0;
+	dev->multi_count = 0;
 
 	/*
 	 * common ATA, ATAPI feature tests
@@ -2426,8 +2428,15 @@ int ata_dev_configure(struct ata_device *dev)
 
 		dev->n_sectors = ata_id_n_sectors(id);
 
-		if (dev->id[59] & 0x100)
+		/* get current R/W Multiple count setting */
-			dev->multi_count = dev->id[59] & 0xff;
+		if ((dev->id[47] >> 8) == 0x80 && (dev->id[59] & 0x100)) {
+			unsigned int max = dev->id[47] & 0xff;
+			unsigned int cnt = dev->id[59] & 0xff;
+			/* only recognize/allow powers of two here */
+			if (is_power_of_2(max) && is_power_of_2(cnt))
+				if (cnt <= max)
+					dev->multi_count = cnt;
+		}
 
 		if (ata_id_has_lba(id)) {
 			const char *lba_desc;
@@ -6709,6 +6718,7 @@ EXPORT_SYMBOL_GPL(ata_id_c_string);
 EXPORT_SYMBOL_GPL(ata_do_dev_read_id);
 EXPORT_SYMBOL_GPL(ata_scsi_simulate);
 
+EXPORT_SYMBOL_GPL(ata_pio_queue_task);
 EXPORT_SYMBOL_GPL(ata_pio_need_iordy);
 EXPORT_SYMBOL_GPL(ata_timing_find_mode);
 EXPORT_SYMBOL_GPL(ata_timing_compute);

drivers/ata/libata-eh.c

@@ -547,7 +547,7 @@ void ata_scsi_error(struct Scsi_Host *host)
 
 	/* For new EH, all qcs are finished in one of three ways -
 	 * normal completion, error completion, and SCSI timeout.
-	 * Both cmpletions can race against SCSI timeout.  When normal
+	 * Both completions can race against SCSI timeout.  When normal
 	 * completion wins, the qc never reaches EH.  When error
 	 * completion wins, the qc has ATA_QCFLAG_FAILED set.
 	 *
@@ -562,7 +562,19 @@ void ata_scsi_error(struct Scsi_Host *host)
 		int nr_timedout = 0;
 
 		spin_lock_irqsave(ap->lock, flags);
+		
+		/* This must occur under the ap->lock as we don't want
+		   a polled recovery to race the real interrupt handler
+		   
+		   The lost_interrupt handler checks for any completed but
+		   non-notified command and completes much like an IRQ handler.
+		   
+		   We then fall into the error recovery code which will treat
+		   this as if normal completion won the race */
 
+		if (ap->ops->lost_interrupt)
+			ap->ops->lost_interrupt(ap);
+			
 		list_for_each_entry_safe(scmd, tmp, &host->eh_cmd_q, eh_entry) {
 			struct ata_queued_cmd *qc;
 
@@ -606,6 +618,9 @@ void ata_scsi_error(struct Scsi_Host *host)
 		ap->eh_tries = ATA_EH_MAX_TRIES;
 	} else
 		spin_unlock_wait(ap->lock);
+		
+	/* If we timed raced normal completion and there is nothing to
+	   recover nr_timedout == 0 why exactly are we doing error recovery ? */
 
  repeat:
 	/* invoke error handler */

drivers/ata/libata-sff.c

@@ -52,6 +52,7 @@ const struct ata_port_operations ata_sff_port_ops = {
 	.softreset		= ata_sff_softreset,
 	.hardreset		= sata_sff_hardreset,
 	.postreset		= ata_sff_postreset,
+	.drain_fifo		= ata_sff_drain_fifo,
 	.error_handler		= ata_sff_error_handler,
 	.post_internal_cmd	= ata_sff_post_internal_cmd,
 
@@ -64,6 +65,8 @@ const struct ata_port_operations ata_sff_port_ops = {
 	.sff_irq_on		= ata_sff_irq_on,
 	.sff_irq_clear		= ata_sff_irq_clear,
 
+	.lost_interrupt		= ata_sff_lost_interrupt,
+
 	.port_start		= ata_sff_port_start,
 };
 EXPORT_SYMBOL_GPL(ata_sff_port_ops);
@@ -1646,7 +1649,7 @@ EXPORT_SYMBOL_GPL(ata_sff_qc_fill_rtf);
  *	RETURNS:
  *	One if interrupt was handled, zero if not (shared irq).
  */
-inline unsigned int ata_sff_host_intr(struct ata_port *ap,
+unsigned int ata_sff_host_intr(struct ata_port *ap,
 				      struct ata_queued_cmd *qc)
 {
 	struct ata_eh_info *ehi = &ap->link.eh_info;
@@ -1774,6 +1777,48 @@ irqreturn_t ata_sff_interrupt(int irq, void *dev_instance)
 }
 EXPORT_SYMBOL_GPL(ata_sff_interrupt);
 
+/**
+ *	ata_sff_lost_interrupt	-	Check for an apparent lost interrupt
+ *	@ap: port that appears to have timed out
+ *
+ *	Called from the libata error handlers when the core code suspects
+ *	an interrupt has been lost. If it has complete anything we can and
+ *	then return. Interface must support altstatus for this faster
+ *	recovery to occur.
+ *
+ *	Locking:
+ *	Caller holds host lock
+ */
+
+void ata_sff_lost_interrupt(struct ata_port *ap)
+{
+	u8 status;
+	struct ata_queued_cmd *qc;
+
+	/* Only one outstanding command per SFF channel */
+	qc = ata_qc_from_tag(ap, ap->link.active_tag);
+	/* Check we have a live one.. */
+	if (qc == NULL ||  !(qc->flags & ATA_QCFLAG_ACTIVE))
+		return;
+	/* We cannot lose an interrupt on a polled command */
+	if (qc->tf.flags & ATA_TFLAG_POLLING)
+		return;
+	/* See if the controller thinks it is still busy - if so the command
+	   isn't a lost IRQ but is still in progress */
+	status = ata_sff_altstatus(ap);
+	if (status & ATA_BUSY)
+		return;
+
+	/* There was a command running, we are no longer busy and we have
+	   no interrupt. */
+	ata_port_printk(ap, KERN_WARNING, "lost interrupt (Status 0x%x)\n",
+								status);
+	/* Run the host interrupt logic as if the interrupt had not been
+	   lost */
+	ata_sff_host_intr(ap, qc);
+}
+EXPORT_SYMBOL_GPL(ata_sff_lost_interrupt);
+
 /**
  *	ata_sff_freeze - Freeze SFF controller port
  *	@ap: port to freeze
@@ -2198,6 +2243,39 @@ void ata_sff_postreset(struct ata_link *link, unsigned int *classes)
 }
 EXPORT_SYMBOL_GPL(ata_sff_postreset);
 
+/**
+ *	ata_sff_drain_fifo - Stock FIFO drain logic for SFF controllers
+ *	@qc: command
+ *
+ *	Drain the FIFO and device of any stuck data following a command
+ *	failing to complete. In some cases this is neccessary before a
+ *	reset will recover the device.
+ *
+ */
+
+void ata_sff_drain_fifo(struct ata_queued_cmd *qc)
+{
+	int count;
+	struct ata_port *ap;
+
+	/* We only need to flush incoming data when a command was running */
+	if (qc == NULL || qc->dma_dir == DMA_TO_DEVICE)
+		return;
+
+	ap = qc->ap;
+	/* Drain up to 64K of data before we give up this recovery method */
+	for (count = 0; (ap->ops->sff_check_status(ap) & ATA_DRQ)
+						&& count < 32768; count++)
+		ioread16(ap->ioaddr.data_addr);
+
+	/* Can become DEBUG later */
+	if (count)
+		ata_port_printk(ap, KERN_DEBUG,
+			"drained %d bytes to clear DRQ.\n", count);
+
+}
+EXPORT_SYMBOL_GPL(ata_sff_drain_fifo);
+
 /**
  *	ata_sff_error_handler - Stock error handler for BMDMA controller
  *	@ap: port to handle error for
@@ -2239,7 +2317,8 @@ void ata_sff_error_handler(struct ata_port *ap)
 		 * really a timeout event, adjust error mask and
 		 * cancel frozen state.
 		 */
-		if (qc->err_mask == AC_ERR_TIMEOUT && (host_stat & ATA_DMA_ERR)) {
+		if (qc->err_mask == AC_ERR_TIMEOUT
+						&& (host_stat & ATA_DMA_ERR)) {
 			qc->err_mask = AC_ERR_HOST_BUS;
 			thaw = 1;
 		}
@@ -2250,6 +2329,13 @@ void ata_sff_error_handler(struct ata_port *ap)
 	ata_sff_sync(ap);		/* FIXME: We don't need this */
 	ap->ops->sff_check_status(ap);
 	ap->ops->sff_irq_clear(ap);
+	/* We *MUST* do FIFO draining before we issue a reset as several
+	 * devices helpfully clear their internal state and will lock solid
+	 * if we touch the data port post reset. Pass qc in case anyone wants
+	 *  to do different PIO/DMA recovery or has per command fixups
+	 */
+	if (ap->ops->drain_fifo)
+		ap->ops->drain_fifo(qc);
 
 	spin_unlock_irqrestore(ap->lock, flags);
 
@@ -2959,4 +3045,3 @@ out:
 EXPORT_SYMBOL_GPL(ata_pci_sff_init_one);
 
 #endif /* CONFIG_PCI */
-

drivers/ata/libata.h

@@ -79,8 +79,6 @@ extern int ata_build_rw_tf(struct ata_taskfile *tf, struct ata_device *dev,
 			   u64 block, u32 n_block, unsigned int tf_flags,
 			   unsigned int tag);
 extern u64 ata_tf_read_block(struct ata_taskfile *tf, struct ata_device *dev);
-extern void ata_pio_queue_task(struct ata_port *ap, void *data,
-			       unsigned long delay);
 extern void ata_port_flush_task(struct ata_port *ap);
 extern unsigned ata_exec_internal(struct ata_device *dev,
 				  struct ata_taskfile *tf, const u8 *cdb,

drivers/ata/pata_acpi.c

@@ -246,9 +246,9 @@ static int pacpi_init_one (struct pci_dev *pdev, const struct pci_device_id *id)
 	static const struct ata_port_info info = {
 		.flags		= ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
 
-		.pio_mask	= 0x1f,
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07,
+		.mwdma_mask	= ATA_MWDMA2,
-		.udma_mask 	= 0x7f,
+		.udma_mask 	= ATA_UDMA6,
 
 		.port_ops	= &pacpi_ops,
 	};

drivers/ata/pata_ali.c

@@ -492,53 +492,53 @@ static int ali_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
 {
 	static const struct ata_port_info info_early = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
 		.port_ops = &ali_early_port_ops
 	};
 	/* Revision 0x20 added DMA */
 	static const struct ata_port_info info_20 = {
 		.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
 		.port_ops = &ali_20_port_ops
 	};
 	/* Revision 0x20 with support logic added UDMA */
 	static const struct ata_port_info info_20_udma = {
 		.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
-		.udma_mask = 0x07,	/* UDMA33 */
+		.udma_mask = ATA_UDMA2,
 		.port_ops = &ali_20_port_ops
 	};
 	/* Revision 0xC2 adds UDMA66 */
 	static const struct ata_port_info info_c2 = {
 		.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
 		.udma_mask = ATA_UDMA4,
 		.port_ops = &ali_c2_port_ops
 	};
 	/* Revision 0xC3 is UDMA66 for now */
 	static const struct ata_port_info info_c3 = {
 		.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
 		.udma_mask = ATA_UDMA4,
 		.port_ops = &ali_c2_port_ops
 	};
 	/* Revision 0xC4 is UDMA100 */
 	static const struct ata_port_info info_c4 = {
 		.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
 		.udma_mask = ATA_UDMA5,
 		.port_ops = &ali_c4_port_ops
 	};
 	/* Revision 0xC5 is UDMA133 with LBA48 DMA */
 	static const struct ata_port_info info_c5 = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
 		.udma_mask = ATA_UDMA6,
 		.port_ops = &ali_c5_port_ops
 	};

drivers/ata/pata_amd.c

@@ -455,74 +455,74 @@ static void amd_clear_fifo(struct pci_dev *pdev)
 static int amd_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
 {
 	static const struct ata_port_info info[10] = {
-		{	/* 0: AMD 7401 */
+		{	/* 0: AMD 7401 - no swdma */
 			.flags = ATA_FLAG_SLAVE_POSS,
-			.pio_mask = 0x1f,
+			.pio_mask = ATA_PIO4,
-			.mwdma_mask = 0x07,	/* No SWDMA */
+			.mwdma_mask = ATA_MWDMA2,
-			.udma_mask = 0x07,	/* UDMA 33 */
+			.udma_mask = ATA_UDMA2,
 			.port_ops = &amd33_port_ops
 		},
 		{	/* 1: Early AMD7409 - no swdma */
 			.flags = ATA_FLAG_SLAVE_POSS,
-			.pio_mask = 0x1f,
+			.pio_mask = ATA_PIO4,
-			.mwdma_mask = 0x07,
+			.mwdma_mask = ATA_MWDMA2,
-			.udma_mask = ATA_UDMA4,	/* UDMA 66 */
+			.udma_mask = ATA_UDMA4,
 			.port_ops = &amd66_port_ops
 		},
-		{	/* 2: AMD 7409, no swdma errata */
+		{	/* 2: AMD 7409 */
 			.flags = ATA_FLAG_SLAVE_POSS,
-			.pio_mask = 0x1f,
+			.pio_mask = ATA_PIO4,
-			.mwdma_mask = 0x07,
+			.mwdma_mask = ATA_MWDMA2,
-			.udma_mask = ATA_UDMA4,	/* UDMA 66 */
+			.udma_mask = ATA_UDMA4,
 			.port_ops = &amd66_port_ops
 		},
 		{	/* 3: AMD 7411 */
 			.flags = ATA_FLAG_SLAVE_POSS,
-			.pio_mask = 0x1f,
+			.pio_mask = ATA_PIO4,
-			.mwdma_mask = 0x07,
+			.mwdma_mask = ATA_MWDMA2,
-			.udma_mask = ATA_UDMA5,	/* UDMA 100 */
+			.udma_mask = ATA_UDMA5,
 			.port_ops = &amd100_port_ops
 		},
 		{	/* 4: AMD 7441 */
 			.flags = ATA_FLAG_SLAVE_POSS,
-			.pio_mask = 0x1f,
+			.pio_mask = ATA_PIO4,
-			.mwdma_mask = 0x07,
+			.mwdma_mask = ATA_MWDMA2,
-			.udma_mask = ATA_UDMA5,	/* UDMA 100 */
+			.udma_mask = ATA_UDMA5,
 			.port_ops = &amd100_port_ops
 		},
-		{	/* 5: AMD 8111*/
+		{	/* 5: AMD 8111 - no swdma */
 			.flags = ATA_FLAG_SLAVE_POSS,
-			.pio_mask = 0x1f,
+			.pio_mask = ATA_PIO4,
-			.mwdma_mask = 0x07,
+			.mwdma_mask = ATA_MWDMA2,
-			.udma_mask = ATA_UDMA6,	/* UDMA 133, no swdma */
+			.udma_mask = ATA_UDMA6,
 			.port_ops = &amd133_port_ops
 		},
-		{	/* 6: AMD 8111 UDMA 100 (Serenade) */
+		{	/* 6: AMD 8111 UDMA 100 (Serenade) - no swdma */
 			.flags = ATA_FLAG_SLAVE_POSS,
-			.pio_mask = 0x1f,
+			.pio_mask = ATA_PIO4,
-			.mwdma_mask = 0x07,
+			.mwdma_mask = ATA_MWDMA2,
-			.udma_mask = ATA_UDMA5,	/* UDMA 100, no swdma */
+			.udma_mask = ATA_UDMA5,
 			.port_ops = &amd133_port_ops
 		},
 		{	/* 7: Nvidia Nforce */
 			.flags = ATA_FLAG_SLAVE_POSS,
-			.pio_mask = 0x1f,
+			.pio_mask = ATA_PIO4,
-			.mwdma_mask = 0x07,
+			.mwdma_mask = ATA_MWDMA2,
-			.udma_mask = ATA_UDMA5,	/* UDMA 100 */
+			.udma_mask = ATA_UDMA5,
 			.port_ops = &nv100_port_ops
 		},
-		{	/* 8: Nvidia Nforce2 and later */
+		{	/* 8: Nvidia Nforce2 and later - no swdma */
 			.flags = ATA_FLAG_SLAVE_POSS,
-			.pio_mask = 0x1f,
+			.pio_mask = ATA_PIO4,
-			.mwdma_mask = 0x07,
+			.mwdma_mask = ATA_MWDMA2,
-			.udma_mask = ATA_UDMA6,	/* UDMA 133, no swdma */
+			.udma_mask = ATA_UDMA6,
 			.port_ops = &nv133_port_ops
 		},
 		{	/* 9: AMD CS5536 (Geode companion) */
 			.flags = ATA_FLAG_SLAVE_POSS,
-			.pio_mask = 0x1f,
+			.pio_mask = ATA_PIO4,
-			.mwdma_mask = 0x07,
+			.mwdma_mask = ATA_MWDMA2,
-			.udma_mask = ATA_UDMA5,	/* UDMA 100 */
+			.udma_mask = ATA_UDMA5,
 			.port_ops = &amd100_port_ops
 		}
 	};

drivers/ata/pata_artop.c

@@ -12,7 +12,6 @@
  *		performance Alessandro Zummo <alessandro.zummo@towertech.it>
  *
  *	TODO
- *	850 serialization once the core supports it
  *	Investigate no_dsc on 850R
  *	Clock detect
  */
@@ -29,7 +28,7 @@
 #include <linux/ata.h>
 
 #define DRV_NAME	"pata_artop"
-#define DRV_VERSION	"0.4.4"
+#define DRV_VERSION	"0.4.5"
 
 /*
  *	The ARTOP has 33 Mhz and "over clocked" timing tables. Until we
@@ -283,6 +282,31 @@ static void artop6260_set_dmamode (struct ata_port *ap, struct ata_device *adev)
 	pci_write_config_byte(pdev, 0x44 + ap->port_no, ultra);
 }
 
+/**
+ *	artop_6210_qc_defer	-	implement serialization
+ *	@qc: command
+ *
+ *	Issue commands per host on this chip.
+ */
+
+static int artop6210_qc_defer(struct ata_queued_cmd *qc)
+{
+	struct ata_host *host = qc->ap->host;
+	struct ata_port *alt = host->ports[1 ^ qc->ap->port_no];
+	int rc;
+
+	/* First apply the usual rules */
+	rc = ata_std_qc_defer(qc);
+	if (rc != 0)
+		return rc;
+
+	/* Now apply serialization rules. Only allow a command if the
+	   other channel state machine is idle */
+	if (alt && alt->qc_active)
+		return	ATA_DEFER_PORT;
+	return 0;
+}
+
 static struct scsi_host_template artop_sht = {
 	ATA_BMDMA_SHT(DRV_NAME),
 };
@@ -293,6 +317,7 @@ static struct ata_port_operations artop6210_ops = {
 	.set_piomode		= artop6210_set_piomode,
 	.set_dmamode		= artop6210_set_dmamode,
 	.prereset		= artop6210_pre_reset,
+	.qc_defer		= artop6210_qc_defer,
 };
 
 static struct ata_port_operations artop6260_ops = {
@@ -323,29 +348,29 @@ static int artop_init_one (struct pci_dev *pdev, const struct pci_device_id *id)
 	static int printed_version;
 	static const struct ata_port_info info_6210 = {
 		.flags		= ATA_FLAG_SLAVE_POSS,
-		.pio_mask	= 0x1f,	/* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07, /* mwdma0-2 */
+		.mwdma_mask	= ATA_MWDMA2,
 		.udma_mask 	= ATA_UDMA2,
 		.port_ops	= &artop6210_ops,
 	};
 	static const struct ata_port_info info_626x = {
 		.flags		= ATA_FLAG_SLAVE_POSS,
-		.pio_mask	= 0x1f,	/* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07, /* mwdma0-2 */
+		.mwdma_mask	= ATA_MWDMA2,
 		.udma_mask 	= ATA_UDMA4,
 		.port_ops	= &artop6260_ops,
 	};
 	static const struct ata_port_info info_628x = {
 		.flags		= ATA_FLAG_SLAVE_POSS,
-		.pio_mask	= 0x1f,	/* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07, /* mwdma0-2 */
+		.mwdma_mask	= ATA_MWDMA2,
 		.udma_mask 	= ATA_UDMA5,
 		.port_ops	= &artop6260_ops,
 	};
 	static const struct ata_port_info info_628x_fast = {
 		.flags		= ATA_FLAG_SLAVE_POSS,
-		.pio_mask	= 0x1f,	/* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07, /* mwdma0-2 */
+		.mwdma_mask	= ATA_MWDMA2,
 		.udma_mask 	= ATA_UDMA6,
 		.port_ops	= &artop6260_ops,
 	};
@@ -362,12 +387,8 @@ static int artop_init_one (struct pci_dev *pdev, const struct pci_device_id *id)
 
 	if (id->driver_data == 0) {	/* 6210 variant */
 		ppi[0] = &info_6210;
-		ppi[1] = &ata_dummy_port_info;
 		/* BIOS may have left us in UDMA, clear it before libata probe */
 		pci_write_config_byte(pdev, 0x54, 0);
-		/* For the moment (also lacks dsc) */
-		printk(KERN_WARNING "ARTOP 6210 requires serialize functionality not yet supported by libata.\n");
-		printk(KERN_WARNING "Secondary ATA ports will not be activated.\n");
 	}
 	else if (id->driver_data == 1)	/* 6260 */
 		ppi[0] = &info_626x;

drivers/ata/pata_at32.c

@@ -67,7 +67,9 @@
  *
  * Alter PIO_MASK below according to table to set maximal PIO mode.
  */
-#define PIO_MASK (0x1f)
+enum {
+  PIO_MASK = ATA_PIO4,
+};
 
 /*
  * Struct containing private information about device.

drivers/ata/pata_atiixp.c

@@ -220,9 +220,9 @@ static int atiixp_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
 {
 	static const struct ata_port_info info = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x06,	/* No MWDMA0 support */
+		.mwdma_mask = ATA_MWDMA12_ONLY,
-		.udma_mask = 0x3F,
+		.udma_mask = ATA_UDMA5,
 		.port_ops = &atiixp_port_ops
 	};
 	static const struct pci_bits atiixp_enable_bits[] = {

drivers/ata/pata_bf54x.c

@@ -1502,7 +1502,7 @@ static struct ata_port_info bfin_port_info[] = {
 		.flags		= ATA_FLAG_SLAVE_POSS
 				| ATA_FLAG_MMIO
 				| ATA_FLAG_NO_LEGACY,
-		.pio_mask	= 0x1f,	/* pio0-4 */
+		.pio_mask	= ATA_PIO4,
 		.mwdma_mask	= 0,
 		.udma_mask	= 0,
 		.port_ops	= &bfin_pata_ops,

drivers/ata/pata_cmd640.c

@@ -211,7 +211,7 @@ static int cmd640_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
 {
 	static const struct ata_port_info info = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
 		.port_ops = &cmd640_port_ops
 	};
 	const struct ata_port_info *ppi[] = { &info, NULL };

drivers/ata/pata_cmd64x.c

@@ -299,40 +299,40 @@ static int cmd64x_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
 	static const struct ata_port_info cmd_info[6] = {
 		{	/* CMD 643 - no UDMA */
 			.flags = ATA_FLAG_SLAVE_POSS,
-			.pio_mask = 0x1f,
+			.pio_mask = ATA_PIO4,
-			.mwdma_mask = 0x07,
+			.mwdma_mask = ATA_MWDMA2,
 			.port_ops = &cmd64x_port_ops
 		},
 		{	/* CMD 646 with broken UDMA */
 			.flags = ATA_FLAG_SLAVE_POSS,
-			.pio_mask = 0x1f,
+			.pio_mask = ATA_PIO4,
-			.mwdma_mask = 0x07,
+			.mwdma_mask = ATA_MWDMA2,
 			.port_ops = &cmd64x_port_ops
 		},
 		{	/* CMD 646 with working UDMA */
 			.flags = ATA_FLAG_SLAVE_POSS,
-			.pio_mask = 0x1f,
+			.pio_mask = ATA_PIO4,
-			.mwdma_mask = 0x07,
+			.mwdma_mask = ATA_MWDMA2,
 			.udma_mask = ATA_UDMA2,
 			.port_ops = &cmd64x_port_ops
 		},
 		{	/* CMD 646 rev 1  */
 			.flags = ATA_FLAG_SLAVE_POSS,
-			.pio_mask = 0x1f,
+			.pio_mask = ATA_PIO4,
-			.mwdma_mask = 0x07,
+			.mwdma_mask = ATA_MWDMA2,
 			.port_ops = &cmd646r1_port_ops
 		},
 		{	/* CMD 648 */
 			.flags = ATA_FLAG_SLAVE_POSS,
-			.pio_mask = 0x1f,
+			.pio_mask = ATA_PIO4,
-			.mwdma_mask = 0x07,
+			.mwdma_mask = ATA_MWDMA2,
 			.udma_mask = ATA_UDMA4,
 			.port_ops = &cmd648_port_ops
 		},
 		{	/* CMD 649 */
 			.flags = ATA_FLAG_SLAVE_POSS,
-			.pio_mask = 0x1f,
+			.pio_mask = ATA_PIO4,
-			.mwdma_mask = 0x07,
+			.mwdma_mask = ATA_MWDMA2,
 			.udma_mask = ATA_UDMA5,
 			.port_ops = &cmd648_port_ops
 		}

drivers/ata/pata_cs5520.c

@@ -158,7 +158,7 @@ static int __devinit cs5520_init_one(struct pci_dev *pdev, const struct pci_devi
 	static const unsigned int ctl_port[] = { 0x3F6, 0x376 };
 	struct ata_port_info pi = {
 		.flags		= ATA_FLAG_SLAVE_POSS,
-		.pio_mask	= 0x1f,
+		.pio_mask	= ATA_PIO4,
 		.port_ops	= &cs5520_port_ops,
 	};
 	const struct ata_port_info *ppi[2];

drivers/ata/pata_cs5530.c

@@ -298,15 +298,15 @@ static int cs5530_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
 {
 	static const struct ata_port_info info = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
-		.udma_mask = 0x07,
+		.udma_mask = ATA_UDMA2,
 		.port_ops = &cs5530_port_ops
 	};
 	/* The docking connector doesn't do UDMA, and it seems not MWDMA */
 	static const struct ata_port_info info_palmax_secondary = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
 		.port_ops = &cs5530_port_ops
 	};
 	const struct ata_port_info *ppi[] = { &info, NULL };

drivers/ata/pata_cs5535.c

@@ -181,8 +181,8 @@ static int cs5535_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 {
 	static const struct ata_port_info info = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
 		.udma_mask = ATA_UDMA4,
 		.port_ops = &cs5535_port_ops
 	};

drivers/ata/pata_cs5536.c

@@ -241,8 +241,8 @@ static int cs5536_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 {
 	static const struct ata_port_info info = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
 		.udma_mask = ATA_UDMA5,
 		.port_ops = &cs5536_port_ops,
 	};

drivers/ata/pata_cypress.c

@@ -124,8 +124,8 @@ static int cy82c693_init_one(struct pci_dev *pdev, const struct pci_device_id *i
 {
 	static const struct ata_port_info info = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
 		.port_ops = &cy82c693_port_ops
 	};
 	const struct ata_port_info *ppi[] = { &info, &ata_dummy_port_info };

drivers/ata/pata_efar.c

@@ -251,9 +251,9 @@ static int efar_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 	static int printed_version;
 	static const struct ata_port_info info = {
 		.flags		= ATA_FLAG_SLAVE_POSS,
-		.pio_mask	= 0x1f,	/* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07, /* mwdma1-2 */
+		.mwdma_mask	= ATA_MWDMA2,
-		.udma_mask 	= 0x0f, /* UDMA 66 */
+		.udma_mask 	= ATA_UDMA4,
 		.port_ops	= &efar_ops,
 	};
 	const struct ata_port_info *ppi[] = { &info, NULL };

drivers/ata/pata_hpt366.c

@@ -336,8 +336,8 @@ static int hpt36x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 {
 	static const struct ata_port_info info_hpt366 = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
 		.udma_mask = ATA_UDMA4,
 		.port_ops = &hpt366_port_ops
 	};

drivers/ata/pata_hpt37x.c

@@ -753,55 +753,55 @@ static int hpt37x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 	/* HPT370 - UDMA100 */
 	static const struct ata_port_info info_hpt370 = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
 		.udma_mask = ATA_UDMA5,
 		.port_ops = &hpt370_port_ops
 	};
 	/* HPT370A - UDMA100 */
 	static const struct ata_port_info info_hpt370a = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
 		.udma_mask = ATA_UDMA5,
 		.port_ops = &hpt370a_port_ops
 	};
 	/* HPT370 - UDMA100 */
 	static const struct ata_port_info info_hpt370_33 = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
 		.udma_mask = ATA_UDMA5,
 		.port_ops = &hpt370_port_ops
 	};
 	/* HPT370A - UDMA100 */
 	static const struct ata_port_info info_hpt370a_33 = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
 		.udma_mask = ATA_UDMA5,
 		.port_ops = &hpt370a_port_ops
 	};
 	/* HPT371, 372 and friends - UDMA133 */
 	static const struct ata_port_info info_hpt372 = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
 		.udma_mask = ATA_UDMA6,
 		.port_ops = &hpt372_port_ops
 	};
 	/* HPT374 - UDMA100, function 1 uses different prereset method */
 	static const struct ata_port_info info_hpt374_fn0 = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
 		.udma_mask = ATA_UDMA5,
 		.port_ops = &hpt372_port_ops
 	};
 	static const struct ata_port_info info_hpt374_fn1 = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
 		.udma_mask = ATA_UDMA5,
 		.port_ops = &hpt374_fn1_port_ops
 	};

drivers/ata/pata_hpt3x2n.c

@@ -441,8 +441,8 @@ static int hpt3x2n_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 	/* HPT372N and friends - UDMA133 */
 	static const struct ata_port_info info = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
 		.udma_mask = ATA_UDMA6,
 		.port_ops = &hpt3x2n_port_ops
 	};

drivers/ata/pata_hpt3x3.c

@@ -188,11 +188,11 @@ static int hpt3x3_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
 	static int printed_version;
 	static const struct ata_port_info info = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
 #if defined(CONFIG_PATA_HPT3X3_DMA)
 		/* Further debug needed */
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
-		.udma_mask = 0x07,
+		.udma_mask = ATA_UDMA2,
 #endif
 		.port_ops = &hpt3x3_port_ops
 	};

drivers/ata/pata_icside.c

@@ -297,7 +297,7 @@ static int icside_dma_init(struct pata_icside_info *info)
 
 	if (ec->dma != NO_DMA && !request_dma(ec->dma, DRV_NAME)) {
 		state->dma = ec->dma;
-		info->mwdma_mask = 0x07;	/* MW0..2 */
+		info->mwdma_mask = ATA_MWDMA2;
 	}
 
 	return 0;
@@ -473,7 +473,7 @@ static int __devinit pata_icside_add_ports(struct pata_icside_info *info)
 	for (i = 0; i < info->nr_ports; i++) {
 		struct ata_port *ap = host->ports[i];
 
-		ap->pio_mask = 0x1f;
+		ap->pio_mask = ATA_PIO4;
 		ap->mwdma_mask = info->mwdma_mask;
 		ap->flags |= ATA_FLAG_SLAVE_POSS;
 		ap->ops = &pata_icside_port_ops;

drivers/ata/pata_isapnp.c

@@ -17,7 +17,7 @@
 #include <linux/libata.h>
 
 #define DRV_NAME "pata_isapnp"
-#define DRV_VERSION "0.2.2"
+#define DRV_VERSION "0.2.5"
 
 static struct scsi_host_template isapnp_sht = {
 	ATA_PIO_SHT(DRV_NAME),
@@ -28,6 +28,13 @@ static struct ata_port_operations isapnp_port_ops = {
 	.cable_detect	= ata_cable_40wire,
 };
 
+static struct ata_port_operations isapnp_noalt_port_ops = {
+	.inherits	= &ata_sff_port_ops,
+	.cable_detect	= ata_cable_40wire,
+	/* No altstatus so we don't want to use the lost interrupt poll */
+	.lost_interrupt = ATA_OP_NULL,
+};
+
 /**
  *	isapnp_init_one		-	attach an isapnp interface
  *	@idev: PnP device
@@ -65,8 +72,8 @@ static int isapnp_init_one(struct pnp_dev *idev, const struct pnp_device_id *dev
 
 	ap = host->ports[0];
 
-	ap->ops = &isapnp_port_ops;
+	ap->ops = &isapnp_noalt_port_ops;
-	ap->pio_mask = 1;
+	ap->pio_mask = ATA_PIO0;
 	ap->flags |= ATA_FLAG_SLAVE_POSS;
 
 	ap->ioaddr.cmd_addr = cmd_addr;
@@ -76,6 +83,7 @@ static int isapnp_init_one(struct pnp_dev *idev, const struct pnp_device_id *dev
 					   pnp_port_start(idev, 1), 1);
 		ap->ioaddr.altstatus_addr = ctl_addr;
 		ap->ioaddr.ctl_addr = ctl_addr;
+		ap->ops = &isapnp_port_ops;
 	}
 
 	ata_sff_std_ports(&ap->ioaddr);

drivers/ata/pata_it8213.c

@@ -262,8 +262,8 @@ static int it8213_init_one (struct pci_dev *pdev, const struct pci_device_id *en
 	static int printed_version;
 	static const struct ata_port_info info = {
 		.flags		= ATA_FLAG_SLAVE_POSS,
-		.pio_mask	= 0x1f,	/* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07, /* mwdma0-2 */
+		.mwdma_mask	= ATA_MWDMA2,
 		.udma_mask 	= ATA_UDMA4, /* FIXME: want UDMA 100? */
 		.port_ops	= &it8213_ops,
 	};

drivers/ata/pata_it821x.c

@@ -875,29 +875,29 @@ static int it821x_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
 
 	static const struct ata_port_info info_smart = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
 		.udma_mask = ATA_UDMA6,
 		.port_ops = &it821x_smart_port_ops
 	};
 	static const struct ata_port_info info_passthru = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
 		.udma_mask = ATA_UDMA6,
 		.port_ops = &it821x_passthru_port_ops
 	};
 	static const struct ata_port_info info_rdc = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
 		.udma_mask = ATA_UDMA6,
 		.port_ops = &it821x_rdc_port_ops
 	};
 	static const struct ata_port_info info_rdc_11 = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
 		/* No UDMA */
 		.port_ops = &it821x_rdc_port_ops
 	};

drivers/ata/pata_ixp4xx_cf.c

@@ -176,7 +176,7 @@ static __devinit int ixp4xx_pata_probe(struct platform_device *pdev)
 	ap = host->ports[0];
 
 	ap->ops	= &ixp4xx_port_ops;
-	ap->pio_mask = 0x1f; /* PIO4 */
+	ap->pio_mask = ATA_PIO4;
 	ap->flags |= ATA_FLAG_MMIO | ATA_FLAG_NO_LEGACY | ATA_FLAG_NO_ATAPI;
 
 	ixp4xx_setup_port(ap, data, cs0->start, cs1->start);

drivers/ata/pata_jmicron.c

@@ -136,8 +136,8 @@ static int jmicron_init_one (struct pci_dev *pdev, const struct pci_device_id *i
 	static const struct ata_port_info info = {
 		.flags	= ATA_FLAG_SLAVE_POSS,
 
-		.pio_mask	= 0x1f,
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07,
+		.mwdma_mask	= ATA_MWDMA2,
 		.udma_mask 	= ATA_UDMA5,
 
 		.port_ops	= &jmicron_ops,

drivers/ata/pata_legacy.c

@@ -129,7 +129,7 @@ static int qdi;			/* Set to probe QDI controllers */
 static int winbond;		/* Set to probe Winbond controllers,
 					give I/O port if non standard */
 static int autospeed;		/* Chip present which snoops speed changes */
-static int pio_mask = 0x1F;	/* PIO range for autospeed devices */
+static int pio_mask = ATA_PIO4;	/* PIO range for autospeed devices */
 static int iordy_mask = 0xFFFFFFFF;	/* Use iordy if available */
 
 /**

drivers/ata/pata_marvell.c

@@ -126,8 +126,8 @@ static int marvell_init_one (struct pci_dev *pdev, const struct pci_device_id *i
 	static const struct ata_port_info info = {
 		.flags		= ATA_FLAG_SLAVE_POSS,
 
-		.pio_mask	= 0x1f,
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07,
+		.mwdma_mask	= ATA_MWDMA2,
 		.udma_mask 	= ATA_UDMA5,
 
 		.port_ops	= &marvell_ops,
@@ -136,8 +136,8 @@ static int marvell_init_one (struct pci_dev *pdev, const struct pci_device_id *i
 		/* Slave possible as its magically mapped not real */
 		.flags		= ATA_FLAG_SLAVE_POSS,
 
-		.pio_mask	= 0x1f,
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07,
+		.mwdma_mask	= ATA_MWDMA2,
 		.udma_mask 	= ATA_UDMA6,
 
 		.port_ops	= &marvell_ops,

drivers/ata/pata_mpc52xx.c

@@ -737,10 +737,10 @@ mpc52xx_ata_probe(struct of_device *op, const struct of_device_id *match)
 	 */
 	prop = of_get_property(op->node, "mwdma-mode", &proplen);
 	if ((prop) && (proplen >= 4))
-		mwdma_mask = 0x7 & ((1 << (*prop + 1)) - 1);
+		mwdma_mask = ATA_MWDMA2 & ((1 << (*prop + 1)) - 1);
 	prop = of_get_property(op->node, "udma-mode", &proplen);
 	if ((prop) && (proplen >= 4))
-		udma_mask = 0x7 & ((1 << (*prop + 1)) - 1);
+		udma_mask = ATA_UDMA2 & ((1 << (*prop + 1)) - 1);
 
 	ata_irq = irq_of_parse_and_map(op->node, 0);
 	if (ata_irq == NO_IRQ) {

drivers/ata/pata_mpiix.c

@@ -200,7 +200,7 @@ static int mpiix_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 	   the MPIIX your box goes castors up */
 
 	ap->ops = &mpiix_port_ops;
-	ap->pio_mask = 0x1F;
+	ap->pio_mask = ATA_PIO4;
 	ap->flags |= ATA_FLAG_SLAVE_POSS;
 
 	ap->ioaddr.cmd_addr = cmd_addr;

drivers/ata/pata_netcell.c

@@ -51,8 +51,8 @@ static int netcell_init_one (struct pci_dev *pdev, const struct pci_device_id *e
 		.flags		= ATA_FLAG_SLAVE_POSS,
 		/* Actually we don't really care about these as the
 		   firmware deals with it */
-		.pio_mask	= 0x1f,	/* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07, /* mwdma0-2 */
+		.mwdma_mask	= ATA_MWDMA2,
 		.udma_mask 	= ATA_UDMA5, /* UDMA 133 */
 		.port_ops	= &netcell_ops,
 	};

drivers/ata/pata_ninja32.c

@@ -136,7 +136,7 @@ static int ninja32_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 	if (!base)
 		return -ENOMEM;
 	ap->ops = &ninja32_port_ops;
-	ap->pio_mask = 0x1F;
+	ap->pio_mask = ATA_PIO4;
 	ap->flags |= ATA_FLAG_SLAVE_POSS;
 
 	ap->ioaddr.cmd_addr = base + 0x10;

drivers/ata/pata_ns87410.c

@@ -144,7 +144,7 @@ static int ns87410_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 {
 	static const struct ata_port_info info = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x0F,
+		.pio_mask = ATA_PIO3,
 		.port_ops = &ns87410_port_ops
 	};
 	const struct ata_port_info *ppi[] = { &info, NULL };

drivers/ata/pata_ns87415.c

@@ -346,8 +346,8 @@ static int ns87415_init_one (struct pci_dev *pdev, const struct pci_device_id *e
 	static int printed_version;
 	static const struct ata_port_info info = {
 		.flags		= ATA_FLAG_SLAVE_POSS,
-		.pio_mask	= 0x1f,	/* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07, /* mwdma0-2 */
+		.mwdma_mask	= ATA_MWDMA2,
 		.port_ops	= &ns87415_pata_ops,
 	};
 	const struct ata_port_info *ppi[] = { &info, NULL };
@@ -355,8 +355,8 @@ static int ns87415_init_one (struct pci_dev *pdev, const struct pci_device_id *e
 #if defined(CONFIG_SUPERIO)
 	static const struct ata_port_info info87560 = {
 		.flags		= ATA_FLAG_SLAVE_POSS,
-		.pio_mask	= 0x1f,	/* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07, /* mwdma0-2 */
+		.mwdma_mask	= ATA_MWDMA2,
 		.port_ops	= &ns87560_pata_ops,
 	};
 

drivers/ata/pata_octeon_cf.c

@@ -871,7 +871,7 @@ static int __devinit octeon_cf_probe(struct platform_device *pdev)
 	ap->private_data = cf_port;
 	cf_port->ap = ap;
 	ap->ops = &octeon_cf_ops;
-	ap->pio_mask = 0x7f; /* Support PIO 0-6 */
+	ap->pio_mask = ATA_PIO6;
 	ap->flags |= ATA_FLAG_MMIO | ATA_FLAG_NO_LEGACY
 		  | ATA_FLAG_NO_ATAPI | ATA_FLAG_PIO_POLLING;
 
@@ -900,7 +900,7 @@ static int __devinit octeon_cf_probe(struct platform_device *pdev)
 		ap->ioaddr.ctl_addr	= cs1 + (6 << 1) + 1;
 		octeon_cf_ops.sff_data_xfer = octeon_cf_data_xfer16;
 
-		ap->mwdma_mask	= 0x1f; /* Support MWDMA 0-4 */
+		ap->mwdma_mask	= ATA_MWDMA4;
 		irq = platform_get_irq(pdev, 0);
 		irq_handler = octeon_cf_interrupt;
 

drivers/ata/pata_oldpiix.c

@@ -238,8 +238,8 @@ static int oldpiix_init_one (struct pci_dev *pdev, const struct pci_device_id *e
 	static int printed_version;
 	static const struct ata_port_info info = {
 		.flags		= ATA_FLAG_SLAVE_POSS,
-		.pio_mask	= 0x1f,	/* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07, /* mwdma1-2 */
+		.mwdma_mask	= ATA_MWDMA2,
 		.port_ops	= &oldpiix_pata_ops,
 	};
 	const struct ata_port_info *ppi[] = { &info, NULL };

drivers/ata/pata_opti.c

@@ -163,7 +163,7 @@ static int opti_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 {
 	static const struct ata_port_info info = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
 		.port_ops = &opti_port_ops
 	};
 	const struct ata_port_info *ppi[] = { &info, NULL };

drivers/ata/pata_optidma.c

@@ -399,15 +399,15 @@ static int optidma_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 {
 	static const struct ata_port_info info_82c700 = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
 		.port_ops = &optidma_port_ops
 	};
 	static const struct ata_port_info info_82c700_udma = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
-		.udma_mask = 0x07,
+		.udma_mask = ATA_UDMA2,
 		.port_ops = &optiplus_port_ops
 	};
 	const struct ata_port_info *ppi[] = { &info_82c700, NULL };

drivers/ata/pata_pcmcia.c

@@ -42,7 +42,7 @@
 
 
 #define DRV_NAME "pata_pcmcia"
-#define DRV_VERSION "0.3.3"
+#define DRV_VERSION "0.3.5"
 
 /*
  *	Private data structure to glue stuff together
@@ -126,6 +126,37 @@ static unsigned int ata_data_xfer_8bit(struct ata_device *dev,
 	return buflen;
 }
 
+/**
+ *	pcmcia_8bit_drain_fifo - Stock FIFO drain logic for SFF controllers
+ *	@qc: command
+ *
+ *	Drain the FIFO and device of any stuck data following a command
+ *	failing to complete. In some cases this is neccessary before a
+ *	reset will recover the device.
+ *
+ */
+ 
+void pcmcia_8bit_drain_fifo(struct ata_queued_cmd *qc)
+{
+	int count;
+	struct ata_port *ap;
+
+	/* We only need to flush incoming data when a command was running */
+	if (qc == NULL || qc->dma_dir == DMA_TO_DEVICE)
+		return;
+
+	ap = qc->ap;
+
+	/* Drain up to 64K of data before we give up this recovery method */
+	for (count = 0; (ap->ops->sff_check_status(ap) & ATA_DRQ)
+							&& count++ < 65536;)
+		ioread8(ap->ioaddr.data_addr);
+
+	if (count)
+		ata_port_printk(ap, KERN_WARNING, "drained %d bytes to clear DRQ.\n",
+								count);
+
+}
 
 static struct scsi_host_template pcmcia_sht = {
 	ATA_PIO_SHT(DRV_NAME),
@@ -143,6 +174,7 @@ static struct ata_port_operations pcmcia_8bit_port_ops = {
 	.sff_data_xfer	= ata_data_xfer_8bit,
 	.cable_detect	= ata_cable_40wire,
 	.set_mode	= pcmcia_set_mode_8bit,
+	.drain_fifo	= pcmcia_8bit_drain_fifo,
 };
 
 #define CS_CHECK(fn, ret) \
@@ -299,7 +331,7 @@ static int pcmcia_init_one(struct pcmcia_device *pdev)
 		ap = host->ports[p];
 
 		ap->ops = ops;
-		ap->pio_mask = 1;		/* ISA so PIO 0 cycles */
+		ap->pio_mask = ATA_PIO0;	/* ISA so PIO 0 cycles */
 		ap->flags |= ATA_FLAG_SLAVE_POSS;
 		ap->ioaddr.cmd_addr = io_addr + 0x10 * p;
 		ap->ioaddr.altstatus_addr = ctl_addr + 0x10 * p;

drivers/ata/pata_pdc2027x.c

@@ -152,18 +152,18 @@ static struct ata_port_info pdc2027x_port_info[] = {
 	{
 		.flags		= ATA_FLAG_NO_LEGACY | ATA_FLAG_SLAVE_POSS |
 		                  ATA_FLAG_MMIO,
-		.pio_mask	= 0x1f, /* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07, /* mwdma0-2 */
+		.mwdma_mask	= ATA_MWDMA2,
-		.udma_mask	= ATA_UDMA5, /* udma0-5 */
+		.udma_mask	= ATA_UDMA5,
 		.port_ops	= &pdc2027x_pata100_ops,
 	},
 	/* PDC_UDMA_133 */
 	{
 		.flags		= ATA_FLAG_NO_LEGACY | ATA_FLAG_SLAVE_POSS |
                         	  ATA_FLAG_MMIO,
-		.pio_mask	= 0x1f, /* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07, /* mwdma0-2 */
+		.mwdma_mask	= ATA_MWDMA2,
-		.udma_mask	= ATA_UDMA6, /* udma0-6 */
+		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &pdc2027x_pata133_ops,
 	},
 };

drivers/ata/pata_pdc202xx_old.c

@@ -291,22 +291,22 @@ static int pdc202xx_init_one(struct pci_dev *dev, const struct pci_device_id *id
 	static const struct ata_port_info info[3] = {
 		{
 			.flags = ATA_FLAG_SLAVE_POSS,
-			.pio_mask = 0x1f,
+			.pio_mask = ATA_PIO4,
-			.mwdma_mask = 0x07,
+			.mwdma_mask = ATA_MWDMA2,
 			.udma_mask = ATA_UDMA2,
 			.port_ops = &pdc2024x_port_ops
 		},
 		{
 			.flags = ATA_FLAG_SLAVE_POSS,
-			.pio_mask = 0x1f,
+			.pio_mask = ATA_PIO4,
-			.mwdma_mask = 0x07,
+			.mwdma_mask = ATA_MWDMA2,
 			.udma_mask = ATA_UDMA4,
 			.port_ops = &pdc2026x_port_ops
 		},
 		{
 			.flags = ATA_FLAG_SLAVE_POSS,
-			.pio_mask = 0x1f,
+			.pio_mask = ATA_PIO4,
-			.mwdma_mask = 0x07,
+			.mwdma_mask = ATA_MWDMA2,
 			.udma_mask = ATA_UDMA5,
 			.port_ops = &pdc2026x_port_ops
 		}

drivers/ata/pata_qdi.c

@@ -212,11 +212,11 @@ static __init int qdi_init_one(unsigned long port, int type, unsigned long io, i
 
 	if (type == 6580) {
 		ap->ops = &qdi6580_port_ops;
-		ap->pio_mask = 0x1F;
+		ap->pio_mask = ATA_PIO4;
 		ap->flags |= ATA_FLAG_SLAVE_POSS;
 	} else {
 		ap->ops = &qdi6500_port_ops;
-		ap->pio_mask = 0x07;	/* Actually PIO3 !IORDY is possible */
+		ap->pio_mask = ATA_PIO2; /* Actually PIO3 !IORDY is possible */
 		ap->flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_NO_IORDY;
 	}
 

drivers/ata/pata_radisys.c

@@ -216,9 +216,9 @@ static int radisys_init_one (struct pci_dev *pdev, const struct pci_device_id *e
 	static int printed_version;
 	static const struct ata_port_info info = {
 		.flags		= ATA_FLAG_SLAVE_POSS,
-		.pio_mask	= 0x1f,	/* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07, /* mwdma1-2 */
+		.mwdma_mask	= ATA_MWDMA12_ONLY,
-		.udma_mask	= 0x14, /* UDMA33/66 only */
+		.udma_mask	= ATA_UDMA24_ONLY,
 		.port_ops	= &radisys_pata_ops,
 	};
 	const struct ata_port_info *ppi[] = { &info, NULL };

drivers/ata/pata_rb532_cf.c

@@ -48,63 +48,11 @@
 struct rb532_cf_info {
 	void __iomem	*iobase;
 	unsigned int	gpio_line;
-	int		frozen;
 	unsigned int	irq;
 };
 
 /* ------------------------------------------------------------------------ */
 
-static inline void rb532_pata_finish_io(struct ata_port *ap)
-{
-	struct ata_host *ah = ap->host;
-	struct rb532_cf_info *info = ah->private_data;
-
-	/* FIXME: Keep previous delay. If this is merely a fence then
-	   ata_sff_sync might be sufficient. */
-	ata_sff_dma_pause(ap);
-	ndelay(RB500_CF_IO_DELAY);
-}
-
-static void rb532_pata_exec_command(struct ata_port *ap,
-				const struct ata_taskfile *tf)
-{
-	writeb(tf->command, ap->ioaddr.command_addr);
-	rb532_pata_finish_io(ap);
-}
-
-static unsigned int rb532_pata_data_xfer(struct ata_device *adev, unsigned char *buf,
-				unsigned int buflen, int write_data)
-{
-	struct ata_port *ap = adev->link->ap;
-	void __iomem *ioaddr = ap->ioaddr.data_addr;
-	int retlen = buflen;
-
-	if (write_data) {
-		for (; buflen > 0; buflen--, buf++)
-			writeb(*buf, ioaddr);
-	} else {
-		for (; buflen > 0; buflen--, buf++)
-			*buf = readb(ioaddr);
-	}
-
-	rb532_pata_finish_io(adev->link->ap);
-	return retlen;
-}
-
-static void rb532_pata_freeze(struct ata_port *ap)
-{
-	struct rb532_cf_info *info = ap->host->private_data;
-
-	info->frozen = 1;
-}
-
-static void rb532_pata_thaw(struct ata_port *ap)
-{
-	struct rb532_cf_info *info = ap->host->private_data;
-
-	info->frozen = 0;
-}
-
 static irqreturn_t rb532_pata_irq_handler(int irq, void *dev_instance)
 {
 	struct ata_host *ah = dev_instance;
@@ -112,8 +60,7 @@ static irqreturn_t rb532_pata_irq_handler(int irq, void *dev_instance)
 
 	if (gpio_get_value(info->gpio_line)) {
 		set_irq_type(info->irq, IRQ_TYPE_LEVEL_LOW);
-		if (!info->frozen)
+		ata_sff_interrupt(info->irq, dev_instance);
-			ata_sff_interrupt(info->irq, dev_instance);
 	} else {
 		set_irq_type(info->irq, IRQ_TYPE_LEVEL_HIGH);
 	}
@@ -123,10 +70,7 @@ static irqreturn_t rb532_pata_irq_handler(int irq, void *dev_instance)
 
 static struct ata_port_operations rb532_pata_port_ops = {
 	.inherits		= &ata_sff_port_ops,
-	.sff_exec_command	= rb532_pata_exec_command,
+	.sff_data_xfer		= ata_sff_data_xfer32,
-	.sff_data_xfer		= rb532_pata_data_xfer,
-	.freeze			= rb532_pata_freeze,
-	.thaw			= rb532_pata_thaw,
 };
 
 /* ------------------------------------------------------------------------ */
@@ -145,7 +89,7 @@ static void rb532_pata_setup_ports(struct ata_host *ah)
 	ap = ah->ports[0];
 
 	ap->ops		= &rb532_pata_port_ops;
-	ap->pio_mask	= 0x1f; /* PIO4 */
+	ap->pio_mask	= ATA_PIO4;
 	ap->flags	= ATA_FLAG_NO_LEGACY | ATA_FLAG_MMIO;
 
 	ap->ioaddr.cmd_addr	= info->iobase + RB500_CF_REG_BASE;
@@ -160,7 +104,7 @@ static void rb532_pata_setup_ports(struct ata_host *ah)
 
 static __devinit int rb532_pata_driver_probe(struct platform_device *pdev)
 {
-	unsigned int irq;
+	int irq;
 	int gpio;
 	struct resource *res;
 	struct ata_host *ah;

drivers/ata/pata_rz1000.c

@@ -88,7 +88,7 @@ static int rz1000_init_one (struct pci_dev *pdev, const struct pci_device_id *en
 	static int printed_version;
 	static const struct ata_port_info info = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
 		.port_ops = &rz1000_port_ops
 	};
 	const struct ata_port_info *ppi[] = { &info, NULL };

drivers/ata/pata_sc1200.c

@@ -2,7 +2,6 @@
  * New ATA layer SC1200 driver		Alan Cox <alan@lxorguk.ukuu.org.uk>
  *
  * TODO: Mode selection filtering
- * TODO: Can't enable second channel until ATA core has serialize
  * TODO: Needs custom DMA cleanup code
  *
  * Based very heavily on
@@ -178,6 +177,31 @@ static unsigned int sc1200_qc_issue(struct ata_queued_cmd *qc)
 	return ata_sff_qc_issue(qc);
 }
 
+/**
+ *	sc1200_qc_defer	-	implement serialization
+ *	@qc: command
+ *
+ *	Serialize command issue on this controller.
+ */
+
+static int sc1200_qc_defer(struct ata_queued_cmd *qc)
+{
+	struct ata_host *host = qc->ap->host;
+	struct ata_port *alt = host->ports[1 ^ qc->ap->port_no];
+	int rc;
+
+	/* First apply the usual rules */
+	rc = ata_std_qc_defer(qc);
+	if (rc != 0)
+		return rc;
+
+	/* Now apply serialization rules. Only allow a command if the
+	   other channel state machine is idle */
+	if (alt && alt->qc_active)
+		return	ATA_DEFER_PORT;
+	return 0;
+}
+
 static struct scsi_host_template sc1200_sht = {
 	ATA_BMDMA_SHT(DRV_NAME),
 	.sg_tablesize	= LIBATA_DUMB_MAX_PRD,
@@ -187,6 +211,7 @@ static struct ata_port_operations sc1200_port_ops = {
 	.inherits	= &ata_bmdma_port_ops,
 	.qc_prep 	= ata_sff_dumb_qc_prep,
 	.qc_issue	= sc1200_qc_issue,
+	.qc_defer	= sc1200_qc_defer,
 	.cable_detect	= ata_cable_40wire,
 	.set_piomode	= sc1200_set_piomode,
 	.set_dmamode	= sc1200_set_dmamode,
@@ -205,13 +230,13 @@ static int sc1200_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 {
 	static const struct ata_port_info info = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
-		.udma_mask = 0x07,
+		.udma_mask = ATA_UDMA2,
 		.port_ops = &sc1200_port_ops
 	};
 	/* Can't enable port 2 yet, see top comments */
-	const struct ata_port_info *ppi[] = { &info, &ata_dummy_port_info };
+	const struct ata_port_info *ppi[] = { &info, };
 
 	return ata_pci_sff_init_one(dev, ppi, &sc1200_sht, NULL);
 }

drivers/ata/pata_scc.c

@@ -1001,8 +1001,8 @@ static struct ata_port_operations scc_pata_ops = {
 static struct ata_port_info scc_port_info[] = {
 	{
 		.flags		= ATA_FLAG_SLAVE_POSS | ATA_FLAG_MMIO | ATA_FLAG_NO_LEGACY,
-		.pio_mask	= 0x1f,	/* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x00,
+		/* No MWDMA */
 		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &scc_pata_ops,
 	},

drivers/ata/pata_sch.c

@@ -84,9 +84,9 @@ static struct ata_port_operations sch_pata_ops = {
 
 static struct ata_port_info sch_port_info = {
 	.flags		= ATA_FLAG_SLAVE_POSS,
-	.pio_mask	= ATA_PIO4,   /* pio0-4 */
+	.pio_mask	= ATA_PIO4,
-	.mwdma_mask	= ATA_MWDMA2, /* mwdma0-2 */
+	.mwdma_mask	= ATA_MWDMA2,
-	.udma_mask	= ATA_UDMA5,  /* udma0-5 */
+	.udma_mask	= ATA_UDMA5,
 	.port_ops	= &sch_pata_ops,
 };
 

drivers/ata/pata_serverworks.c

@@ -398,26 +398,26 @@ static int serverworks_init_one(struct pci_dev *pdev, const struct pci_device_id
 	static const struct ata_port_info info[4] = {
 		{ /* OSB4 */
 			.flags = ATA_FLAG_SLAVE_POSS,
-			.pio_mask = 0x1f,
+			.pio_mask = ATA_PIO4,
-			.mwdma_mask = 0x07,
+			.mwdma_mask = ATA_MWDMA2,
-			.udma_mask = 0x07,
+			.udma_mask = ATA_UDMA2,
 			.port_ops = &serverworks_osb4_port_ops
 		}, { /* OSB4 no UDMA */
 			.flags = ATA_FLAG_SLAVE_POSS,
-			.pio_mask = 0x1f,
+			.pio_mask = ATA_PIO4,
-			.mwdma_mask = 0x07,
+			.mwdma_mask = ATA_MWDMA2,
-			.udma_mask = 0x00,
+			/* No UDMA */
 			.port_ops = &serverworks_osb4_port_ops
 		}, { /* CSB5 */
 			.flags = ATA_FLAG_SLAVE_POSS,
-			.pio_mask = 0x1f,
+			.pio_mask = ATA_PIO4,
-			.mwdma_mask = 0x07,
+			.mwdma_mask = ATA_MWDMA2,
 			.udma_mask = ATA_UDMA4,
 			.port_ops = &serverworks_csb_port_ops
 		}, { /* CSB5 - later revisions*/
 			.flags = ATA_FLAG_SLAVE_POSS,
-			.pio_mask = 0x1f,
+			.pio_mask = ATA_PIO4,
-			.mwdma_mask = 0x07,
+			.mwdma_mask = ATA_MWDMA2,
 			.udma_mask = ATA_UDMA5,
 			.port_ops = &serverworks_csb_port_ops
 		}

drivers/ata/pata_sil680.c

@@ -282,15 +282,15 @@ static int __devinit sil680_init_one(struct pci_dev *pdev,
 {
 	static const struct ata_port_info info = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
 		.udma_mask = ATA_UDMA6,
 		.port_ops = &sil680_port_ops
 	};
 	static const struct ata_port_info info_slow = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
 		.udma_mask = ATA_UDMA5,
 		.port_ops = &sil680_port_ops
 	};

drivers/ata/pata_sis.c

@@ -552,51 +552,57 @@ static struct ata_port_operations sis_old_ops = {
 
 static const struct ata_port_info sis_info = {
 	.flags		= ATA_FLAG_SLAVE_POSS,
-	.pio_mask	= 0x1f,	/* pio0-4 */
+	.pio_mask	= ATA_PIO4,
-	.mwdma_mask	= 0x07,
+	.mwdma_mask	= ATA_MWDMA2,
-	.udma_mask	= 0,
+	/* No UDMA */
 	.port_ops	= &sis_old_ops,
 };
 static const struct ata_port_info sis_info33 = {
 	.flags		= ATA_FLAG_SLAVE_POSS,
-	.pio_mask	= 0x1f,	/* pio0-4 */
+	.pio_mask	= ATA_PIO4,
-	.mwdma_mask	= 0x07,
+	.mwdma_mask	= ATA_MWDMA2,
-	.udma_mask	= ATA_UDMA2,	/* UDMA 33 */
+	.udma_mask	= ATA_UDMA2,
 	.port_ops	= &sis_old_ops,
 };
 static const struct ata_port_info sis_info66 = {
 	.flags		= ATA_FLAG_SLAVE_POSS,
-	.pio_mask	= 0x1f,	/* pio0-4 */
+	.pio_mask	= ATA_PIO4,
-	.udma_mask	= ATA_UDMA4,	/* UDMA 66 */
+	/* No MWDMA */
+	.udma_mask	= ATA_UDMA4,
 	.port_ops	= &sis_66_ops,
 };
 static const struct ata_port_info sis_info100 = {
 	.flags		= ATA_FLAG_SLAVE_POSS,
-	.pio_mask	= 0x1f,	/* pio0-4 */
+	.pio_mask	= ATA_PIO4,
+	/* No MWDMA */
 	.udma_mask	= ATA_UDMA5,
 	.port_ops	= &sis_100_ops,
 };
 static const struct ata_port_info sis_info100_early = {
 	.flags		= ATA_FLAG_SLAVE_POSS,
+	.pio_mask	= ATA_PIO4,
+	/* No MWDMA */
 	.udma_mask	= ATA_UDMA5,
-	.pio_mask	= 0x1f,	/* pio0-4 */
 	.port_ops	= &sis_66_ops,
 };
 static const struct ata_port_info sis_info133 = {
 	.flags		= ATA_FLAG_SLAVE_POSS,
-	.pio_mask	= 0x1f,	/* pio0-4 */
+	.pio_mask	= ATA_PIO4,
+	/* No MWDMA */
 	.udma_mask	= ATA_UDMA6,
 	.port_ops	= &sis_133_ops,
 };
 const struct ata_port_info sis_info133_for_sata = {
 	.flags		= ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
-	.pio_mask	= 0x1f,	/* pio0-4 */
+	.pio_mask	= ATA_PIO4,
+	/* No MWDMA */
 	.udma_mask	= ATA_UDMA6,
 	.port_ops	= &sis_133_for_sata_ops,
 };
 static const struct ata_port_info sis_info133_early = {
 	.flags		= ATA_FLAG_SLAVE_POSS,
-	.pio_mask	= 0x1f,	/* pio0-4 */
+	.pio_mask	= ATA_PIO4,
+	/* No MWDMA */
 	.udma_mask	= ATA_UDMA6,
 	.port_ops	= &sis_133_early_ops,
 };

drivers/ata/pata_sl82c105.c

@@ -283,13 +283,13 @@ static int sl82c105_init_one(struct pci_dev *dev, const struct pci_device_id *id
 {
 	static const struct ata_port_info info_dma = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
 		.port_ops = &sl82c105_port_ops
 	};
 	static const struct ata_port_info info_early = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
 		.port_ops = &sl82c105_port_ops
 	};
 	/* for now use only the first port */

drivers/ata/pata_triflex.c

@@ -191,8 +191,8 @@ static int triflex_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 {
 	static const struct ata_port_info info = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
 		.port_ops = &triflex_port_ops
 	};
 	const struct ata_port_info *ppi[] = { &info, NULL };

drivers/ata/pata_via.c

@@ -422,46 +422,46 @@ static int via_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
 	/* Early VIA without UDMA support */
 	static const struct ata_port_info via_mwdma_info = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
 		.port_ops = &via_port_ops
 	};
 	/* Ditto with IRQ masking required */
 	static const struct ata_port_info via_mwdma_info_borked = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
 		.port_ops = &via_port_ops_noirq,
 	};
 	/* VIA UDMA 33 devices (and borked 66) */
 	static const struct ata_port_info via_udma33_info = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
 		.udma_mask = ATA_UDMA2,
 		.port_ops = &via_port_ops
 	};
 	/* VIA UDMA 66 devices */
 	static const struct ata_port_info via_udma66_info = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
 		.udma_mask = ATA_UDMA4,
 		.port_ops = &via_port_ops
 	};
 	/* VIA UDMA 100 devices */
 	static const struct ata_port_info via_udma100_info = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
 		.udma_mask = ATA_UDMA5,
 		.port_ops = &via_port_ops
 	};
 	/* UDMA133 with bad AST (All current 133) */
 	static const struct ata_port_info via_udma133_info = {
 		.flags = ATA_FLAG_SLAVE_POSS,
-		.pio_mask = 0x1f,
+		.pio_mask = ATA_PIO4,
-		.mwdma_mask = 0x07,
+		.mwdma_mask = ATA_MWDMA2,
 		.udma_mask = ATA_UDMA6,	/* FIXME: should check north bridge */
 		.port_ops = &via_port_ops
 	};

drivers/ata/pata_winbond.c

@@ -193,7 +193,7 @@ static __init int winbond_init_one(unsigned long port)
 		ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx", cmd_port, ctl_port);
 
 		ap->ops = &winbond_port_ops;
-		ap->pio_mask = 0x1F;
+		ap->pio_mask = ATA_PIO4;
 		ap->flags |= ATA_FLAG_SLAVE_POSS;
 		ap->ioaddr.cmd_addr = cmd_addr;
 		ap->ioaddr.altstatus_addr = ctl_addr;

drivers/ata/pdc_adma.c

@@ -148,6 +148,8 @@ static struct scsi_host_template adma_ata_sht = {
 static struct ata_port_operations adma_ata_ops = {
 	.inherits		= &ata_sff_port_ops,
 
+	.lost_interrupt		= ATA_OP_NULL,
+
 	.check_atapi_dma	= adma_check_atapi_dma,
 	.qc_prep		= adma_qc_prep,
 	.qc_issue		= adma_qc_issue,
@@ -166,7 +168,7 @@ static struct ata_port_info adma_port_info[] = {
 		.flags		= ATA_FLAG_SLAVE_POSS |
 				  ATA_FLAG_NO_LEGACY | ATA_FLAG_MMIO |
 				  ATA_FLAG_PIO_POLLING,
-		.pio_mask	= 0x10, /* pio4 */
+		.pio_mask	= ATA_PIO4_ONLY,
 		.udma_mask	= ATA_UDMA4,
 		.port_ops	= &adma_ata_ops,
 	},

drivers/ata/sata_fsl.c

@@ -1279,8 +1279,8 @@ static struct ata_port_operations sata_fsl_ops = {
 static const struct ata_port_info sata_fsl_port_info[] = {
 	{
 	 .flags = SATA_FSL_HOST_FLAGS,
-	 .pio_mask = 0x1f,	/* pio 0-4 */
+	 .pio_mask = ATA_PIO4,
-	 .udma_mask = 0x7f,	/* udma 0-6 */
+	 .udma_mask = ATA_UDMA6,
 	 .port_ops = &sata_fsl_ops,
 	 },
 };

drivers/ata/sata_inic162x.c

@@ -744,8 +744,8 @@ static struct ata_port_operations inic_port_ops = {
 
 static struct ata_port_info inic_port_info = {
 	.flags			= ATA_FLAG_SATA | ATA_FLAG_PIO_DMA,
-	.pio_mask		= 0x1f,	/* pio0-4 */
+	.pio_mask		= ATA_PIO4,
-	.mwdma_mask		= 0x07, /* mwdma0-2 */
+	.mwdma_mask		= ATA_MWDMA2,
 	.udma_mask		= ATA_UDMA6,
 	.port_ops		= &inic_port_ops
 };

drivers/ata/sata_nv.c

@@ -57,9 +57,9 @@ enum {
 	NV_MMIO_BAR			= 5,
 
 	NV_PORTS			= 2,
-	NV_PIO_MASK			= 0x1f,
+	NV_PIO_MASK			= ATA_PIO4,
-	NV_MWDMA_MASK			= 0x07,
+	NV_MWDMA_MASK			= ATA_MWDMA2,
-	NV_UDMA_MASK			= 0x7f,
+	NV_UDMA_MASK			= ATA_UDMA6,
 	NV_PORT0_SCR_REG_OFFSET		= 0x00,
 	NV_PORT1_SCR_REG_OFFSET		= 0x40,
 
@@ -408,6 +408,7 @@ static struct scsi_host_template nv_swncq_sht = {
 
 static struct ata_port_operations nv_common_ops = {
 	.inherits		= &ata_bmdma_port_ops,
+	.lost_interrupt		= ATA_OP_NULL,
 	.scr_read		= nv_scr_read,
 	.scr_write		= nv_scr_write,
 };

drivers/ata/sata_promise.c

@@ -176,7 +176,9 @@ static const struct ata_port_operations pdc_common_ops = {
 	.check_atapi_dma	= pdc_check_atapi_dma,
 	.qc_prep		= pdc_qc_prep,
 	.qc_issue		= pdc_qc_issue,
+
 	.sff_irq_clear		= pdc_irq_clear,
+	.lost_interrupt		= ATA_OP_NULL,
 
 	.post_internal_cmd	= pdc_post_internal_cmd,
 	.error_handler		= pdc_error_handler,
@@ -213,8 +215,8 @@ static const struct ata_port_info pdc_port_info[] = {
 	{
 		.flags		= PDC_COMMON_FLAGS | ATA_FLAG_SATA |
 				  PDC_FLAG_SATA_PATA,
-		.pio_mask	= 0x1f, /* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07, /* mwdma0-2 */
+		.mwdma_mask	= ATA_MWDMA2,
 		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &pdc_old_sata_ops,
 	},
@@ -222,8 +224,8 @@ static const struct ata_port_info pdc_port_info[] = {
 	[board_2037x_pata] =
 	{
 		.flags		= PDC_COMMON_FLAGS | ATA_FLAG_SLAVE_POSS,
-		.pio_mask	= 0x1f, /* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07, /* mwdma0-2 */
+		.mwdma_mask	= ATA_MWDMA2,
 		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &pdc_pata_ops,
 	},
@@ -232,8 +234,8 @@ static const struct ata_port_info pdc_port_info[] = {
 	{
 		.flags		= PDC_COMMON_FLAGS | ATA_FLAG_SATA |
 				  PDC_FLAG_4_PORTS,
-		.pio_mask	= 0x1f, /* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07, /* mwdma0-2 */
+		.mwdma_mask	= ATA_MWDMA2,
 		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &pdc_old_sata_ops,
 	},
@@ -242,8 +244,8 @@ static const struct ata_port_info pdc_port_info[] = {
 	{
 		.flags		= PDC_COMMON_FLAGS | ATA_FLAG_SLAVE_POSS |
 				  PDC_FLAG_4_PORTS,
-		.pio_mask	= 0x1f, /* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07, /* mwdma0-2 */
+		.mwdma_mask	= ATA_MWDMA2,
 		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &pdc_pata_ops,
 	},
@@ -252,8 +254,8 @@ static const struct ata_port_info pdc_port_info[] = {
 	{
 		.flags		= PDC_COMMON_FLAGS | ATA_FLAG_SATA |
 				  PDC_FLAG_GEN_II | PDC_FLAG_SATA_PATA,
-		.pio_mask	= 0x1f, /* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07, /* mwdma0-2 */
+		.mwdma_mask	= ATA_MWDMA2,
 		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &pdc_sata_ops,
 	},
@@ -262,8 +264,8 @@ static const struct ata_port_info pdc_port_info[] = {
 	{
 		.flags		= PDC_COMMON_FLAGS | ATA_FLAG_SLAVE_POSS |
 				  PDC_FLAG_GEN_II,
-		.pio_mask	= 0x1f, /* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07, /* mwdma0-2 */
+		.mwdma_mask	= ATA_MWDMA2,
 		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &pdc_pata_ops,
 	},
@@ -272,8 +274,8 @@ static const struct ata_port_info pdc_port_info[] = {
 	{
 		.flags		= PDC_COMMON_FLAGS | ATA_FLAG_SATA |
 				  PDC_FLAG_GEN_II | PDC_FLAG_4_PORTS,
-		.pio_mask	= 0x1f, /* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07, /* mwdma0-2 */
+		.mwdma_mask	= ATA_MWDMA2,
 		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &pdc_sata_ops,
 	},

drivers/ata/sata_qstor.c

@@ -147,6 +147,7 @@ static struct ata_port_operations qs_ata_ops = {
 	.softreset		= ATA_OP_NULL,
 	.error_handler		= qs_error_handler,
 	.post_internal_cmd	= ATA_OP_NULL,
+	.lost_interrupt		= ATA_OP_NULL,
 
 	.scr_read		= qs_scr_read,
 	.scr_write		= qs_scr_write,
@@ -160,7 +161,7 @@ static const struct ata_port_info qs_port_info[] = {
 	{
 		.flags		= ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
 				  ATA_FLAG_MMIO | ATA_FLAG_PIO_POLLING,
-		.pio_mask	= 0x10, /* pio4 */
+		.pio_mask	= ATA_PIO4_ONLY,
 		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &qs_ata_ops,
 	},

drivers/ata/sata_sil.c

@@ -200,8 +200,8 @@ static const struct ata_port_info sil_port_info[] = {
 	/* sil_3112 */
 	{
 		.flags		= SIL_DFL_PORT_FLAGS | SIL_FLAG_MOD15WRITE,
-		.pio_mask	= 0x1f,			/* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07,			/* mwdma0-2 */
+		.mwdma_mask	= ATA_MWDMA2,
 		.udma_mask	= ATA_UDMA5,
 		.port_ops	= &sil_ops,
 	},
@@ -209,24 +209,24 @@ static const struct ata_port_info sil_port_info[] = {
 	{
 		.flags		= SIL_DFL_PORT_FLAGS | SIL_FLAG_MOD15WRITE |
 				  SIL_FLAG_NO_SATA_IRQ,
-		.pio_mask	= 0x1f,			/* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07,			/* mwdma0-2 */
+		.mwdma_mask	= ATA_MWDMA2,
 		.udma_mask	= ATA_UDMA5,
 		.port_ops	= &sil_ops,
 	},
 	/* sil_3512 */
 	{
 		.flags		= SIL_DFL_PORT_FLAGS | SIL_FLAG_RERR_ON_DMA_ACT,
-		.pio_mask	= 0x1f,			/* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07,			/* mwdma0-2 */
+		.mwdma_mask	= ATA_MWDMA2,
 		.udma_mask	= ATA_UDMA5,
 		.port_ops	= &sil_ops,
 	},
 	/* sil_3114 */
 	{
 		.flags		= SIL_DFL_PORT_FLAGS | SIL_FLAG_RERR_ON_DMA_ACT,
-		.pio_mask	= 0x1f,			/* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07,			/* mwdma0-2 */
+		.mwdma_mask	= ATA_MWDMA2,
 		.udma_mask	= ATA_UDMA5,
 		.port_ops	= &sil_ops,
 	},

drivers/ata/sata_sil24.c

@@ -429,25 +429,25 @@ static const struct ata_port_info sil24_port_info[] = {
 	{
 		.flags		= SIL24_COMMON_FLAGS | SIL24_NPORTS2FLAG(4) |
 				  SIL24_FLAG_PCIX_IRQ_WOC,
-		.pio_mask	= 0x1f,			/* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07,			/* mwdma0-2 */
+		.mwdma_mask	= ATA_MWDMA2,
-		.udma_mask	= ATA_UDMA5,		/* udma0-5 */
+		.udma_mask	= ATA_UDMA5,
 		.port_ops	= &sil24_ops,
 	},
 	/* sil_3132 */
 	{
 		.flags		= SIL24_COMMON_FLAGS | SIL24_NPORTS2FLAG(2),
-		.pio_mask	= 0x1f,			/* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07,			/* mwdma0-2 */
+		.mwdma_mask	= ATA_MWDMA2,
-		.udma_mask	= ATA_UDMA5,		/* udma0-5 */
+		.udma_mask	= ATA_UDMA5,
 		.port_ops	= &sil24_ops,
 	},
 	/* sil_3131/sil_3531 */
 	{
 		.flags		= SIL24_COMMON_FLAGS | SIL24_NPORTS2FLAG(1),
-		.pio_mask	= 0x1f,			/* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07,			/* mwdma0-2 */
+		.mwdma_mask	= ATA_MWDMA2,
-		.udma_mask	= ATA_UDMA5,		/* udma0-5 */
+		.udma_mask	= ATA_UDMA5,
 		.port_ops	= &sil24_ops,
 	},
 };

drivers/ata/sata_sis.c

@@ -97,8 +97,8 @@ static struct ata_port_operations sis_ops = {
 
 static const struct ata_port_info sis_port_info = {
 	.flags		= ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
-	.pio_mask	= 0x1f,
+	.pio_mask	= ATA_PIO4,
-	.mwdma_mask	= 0x7,
+	.mwdma_mask	= ATA_MWDMA2,
 	.udma_mask	= ATA_UDMA6,
 	.port_ops	= &sis_ops,
 };

drivers/ata/sata_svw.c

@@ -361,8 +361,8 @@ static const struct ata_port_info k2_port_info[] = {
 	{
 		.flags		= ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
 				  ATA_FLAG_MMIO | K2_FLAG_NO_ATAPI_DMA,
-		.pio_mask	= 0x1f,
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07,
+		.mwdma_mask	= ATA_MWDMA2,
 		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &k2_sata_ops,
 	},
@@ -371,8 +371,8 @@ static const struct ata_port_info k2_port_info[] = {
 		.flags		= ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
 				  ATA_FLAG_MMIO | K2_FLAG_NO_ATAPI_DMA |
 				  K2_FLAG_SATA_8_PORTS,
-		.pio_mask	= 0x1f,
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07,
+		.mwdma_mask	= ATA_MWDMA2,
 		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &k2_sata_ops,
 	},
@@ -380,8 +380,8 @@ static const struct ata_port_info k2_port_info[] = {
 	{
 		.flags		= ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
 				  ATA_FLAG_MMIO | K2_FLAG_BAR_POS_3,
-		.pio_mask	= 0x1f,
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07,
+		.mwdma_mask	= ATA_MWDMA2,
 		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &k2_sata_ops,
 	},
@@ -389,8 +389,8 @@ static const struct ata_port_info k2_port_info[] = {
 	{
 		.flags		= ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
 				  ATA_FLAG_MMIO,
-		.pio_mask	= 0x1f,
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07,
+		.mwdma_mask	= ATA_MWDMA2,
 		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &k2_sata_ops,
 	},

drivers/ata/sata_sx4.c

@@ -265,8 +265,8 @@ static const struct ata_port_info pdc_port_info[] = {
 		.flags		= ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
 				  ATA_FLAG_SRST | ATA_FLAG_MMIO |
 				  ATA_FLAG_NO_ATAPI | ATA_FLAG_PIO_POLLING,
-		.pio_mask	= 0x1f, /* pio0-4 */
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07, /* mwdma0-2 */
+		.mwdma_mask	= ATA_MWDMA2,
 		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &pdc_20621_ops,
 	},

drivers/ata/sata_uli.c

@@ -89,7 +89,7 @@ static struct ata_port_operations uli_ops = {
 static const struct ata_port_info uli_port_info = {
 	.flags		= ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
 			  ATA_FLAG_IGN_SIMPLEX,
-	.pio_mask       = 0x1f,		/* pio0-4 */
+	.pio_mask       = ATA_PIO4,
 	.udma_mask      = ATA_UDMA6,
 	.port_ops       = &uli_ops,
 };

drivers/ata/sata_via.c

@@ -146,24 +146,24 @@ static struct ata_port_operations vt8251_ops = {
 
 static const struct ata_port_info vt6420_port_info = {
 	.flags		= ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
-	.pio_mask	= 0x1f,
+	.pio_mask	= ATA_PIO4,
-	.mwdma_mask	= 0x07,
+	.mwdma_mask	= ATA_MWDMA2,
 	.udma_mask	= ATA_UDMA6,
 	.port_ops	= &vt6420_sata_ops,
 };
 
 static struct ata_port_info vt6421_sport_info = {
 	.flags		= ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
-	.pio_mask	= 0x1f,
+	.pio_mask	= ATA_PIO4,
-	.mwdma_mask	= 0x07,
+	.mwdma_mask	= ATA_MWDMA2,
 	.udma_mask	= ATA_UDMA6,
 	.port_ops	= &vt6421_sata_ops,
 };
 
 static struct ata_port_info vt6421_pport_info = {
 	.flags		= ATA_FLAG_SLAVE_POSS | ATA_FLAG_NO_LEGACY,
-	.pio_mask	= 0x1f,
+	.pio_mask	= ATA_PIO4,
-	.mwdma_mask	= 0,
+	/* No MWDMA */
 	.udma_mask	= ATA_UDMA6,
 	.port_ops	= &vt6421_pata_ops,
 };
@@ -171,8 +171,8 @@ static struct ata_port_info vt6421_pport_info = {
 static struct ata_port_info vt8251_port_info = {
 	.flags		= ATA_FLAG_SATA | ATA_FLAG_SLAVE_POSS |
 			  ATA_FLAG_NO_LEGACY,
-	.pio_mask	= 0x1f,
+	.pio_mask	= ATA_PIO4,
-	.mwdma_mask	= 0x07,
+	.mwdma_mask	= ATA_MWDMA2,
 	.udma_mask	= ATA_UDMA6,
 	.port_ops	= &vt8251_ops,
 };

drivers/ata/sata_vsc.c

@@ -308,6 +308,9 @@ static struct scsi_host_template vsc_sata_sht = {
 
 static struct ata_port_operations vsc_sata_ops = {
 	.inherits		= &ata_bmdma_port_ops,
+	/* The IRQ handling is not quite standard SFF behaviour so we
+	   cannot use the default lost interrupt handler */
+	.lost_interrupt		= ATA_OP_NULL,
 	.sff_tf_load		= vsc_sata_tf_load,
 	.sff_tf_read		= vsc_sata_tf_read,
 	.freeze			= vsc_freeze,
@@ -345,8 +348,8 @@ static int __devinit vsc_sata_init_one(struct pci_dev *pdev,
 	static const struct ata_port_info pi = {
 		.flags		= ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
 				  ATA_FLAG_MMIO,
-		.pio_mask	= 0x1f,
+		.pio_mask	= ATA_PIO4,
-		.mwdma_mask	= 0x07,
+		.mwdma_mask	= ATA_MWDMA2,
 		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &vsc_sata_ops,
 	};

include/linux/ata.h

@@ -108,6 +108,8 @@ enum {
 	ATA_PIO5		= ATA_PIO4 | (1 << 5),
 	ATA_PIO6		= ATA_PIO5 | (1 << 6),
 
+	ATA_PIO4_ONLY		= (1 << 4),
+
 	ATA_SWDMA0		= (1 << 0),
 	ATA_SWDMA1		= ATA_SWDMA0 | (1 << 1),
 	ATA_SWDMA2		= ATA_SWDMA1 | (1 << 2),
@@ -117,6 +119,8 @@ enum {
 	ATA_MWDMA0		= (1 << 0),
 	ATA_MWDMA1		= ATA_MWDMA0 | (1 << 1),
 	ATA_MWDMA2		= ATA_MWDMA1 | (1 << 2),
+	ATA_MWDMA3		= ATA_MWDMA2 | (1 << 3),
+	ATA_MWDMA4		= ATA_MWDMA3 | (1 << 4),
 
 	ATA_MWDMA12_ONLY	= (1 << 1) | (1 << 2),
 	ATA_MWDMA2_ONLY		= (1 << 2),
@@ -131,6 +135,8 @@ enum {
 	ATA_UDMA7		= ATA_UDMA6 | (1 << 7),
 	/* ATA_UDMA7 is just for completeness... doesn't exist (yet?).  */
 
+	ATA_UDMA24_ONLY		= (1 << 2) | (1 << 4),
+
 	ATA_UDMA_MASK_40C	= ATA_UDMA2,	/* udma0-2 */
 
 	/* DMA-related */

include/linux/libata.h

@@ -795,6 +795,7 @@ struct ata_port_operations {
 	ata_reset_fn_t		pmp_hardreset;
 	ata_postreset_fn_t	pmp_postreset;
 	void (*error_handler)(struct ata_port *ap);
+	void (*lost_interrupt)(struct ata_port *ap);
 	void (*post_internal_cmd)(struct ata_queued_cmd *qc);
 
 	/*
@@ -836,6 +837,8 @@ struct ata_port_operations {
 	void (*bmdma_start)(struct ata_queued_cmd *qc);
 	void (*bmdma_stop)(struct ata_queued_cmd *qc);
 	u8   (*bmdma_status)(struct ata_port *ap);
+
+	void (*drain_fifo)(struct ata_queued_cmd *qc);
 #endif /* CONFIG_ATA_SFF */
 
 	ssize_t (*em_show)(struct ata_port *ap, char *buf);
@@ -1008,6 +1011,9 @@ extern int ata_cable_sata(struct ata_port *ap);
 extern int ata_cable_ignore(struct ata_port *ap);
 extern int ata_cable_unknown(struct ata_port *ap);
 
+extern void ata_pio_queue_task(struct ata_port *ap, void *data,
+			       unsigned long delay);
+
 /* Timing helpers */
 extern unsigned int ata_pio_need_iordy(const struct ata_device *);
 extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode);
@@ -1572,6 +1578,7 @@ extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc);
 extern unsigned int ata_sff_host_intr(struct ata_port *ap,
 				      struct ata_queued_cmd *qc);
 extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance);
+extern void ata_sff_lost_interrupt(struct ata_port *ap);
 extern void ata_sff_freeze(struct ata_port *ap);
 extern void ata_sff_thaw(struct ata_port *ap);
 extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline);
@@ -1584,6 +1591,7 @@ extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes,
 extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class,
 			       unsigned long deadline);
 extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes);
+extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc);
 extern void ata_sff_error_handler(struct ata_port *ap);
 extern void ata_sff_post_internal_cmd(struct ata_queued_cmd *qc);
 extern int ata_sff_port_start(struct ata_port *ap);