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:
  sata_sil: add Large Block Transfer support
  [libata] ata_piix: cleanup dmi strings checking
  DMI: add dmi_match
  libata: blacklist NCQ on OCZ CORE 2 SSD (resend)
  [libata] Update kernel-doc comments to match source code
  libata: perform port detach in EH
  libata: when restoring SControl during detach do the PMP links first
  libata: beef up iterators

drivers/ata/ahci.c

@@ -1119,14 +1119,14 @@ static void ahci_start_port(struct ata_port *ap)
 
 	/* turn on LEDs */
 	if (ap->flags & ATA_FLAG_EM) {
-		ata_port_for_each_link(link, ap) {
+		ata_for_each_link(link, ap, EDGE) {
 			emp = &pp->em_priv[link->pmp];
 			ahci_transmit_led_message(ap, emp->led_state, 4);
 		}
 	}
 
 	if (ap->flags & ATA_FLAG_SW_ACTIVITY)
-		ata_port_for_each_link(link, ap)
+		ata_for_each_link(link, ap, EDGE)
 			ahci_init_sw_activity(link);
 
 }
@@ -1361,7 +1361,7 @@ static ssize_t ahci_led_show(struct ata_port *ap, char *buf)
 	struct ahci_em_priv *emp;
 	int rc = 0;
 
-	ata_port_for_each_link(link, ap) {
+	ata_for_each_link(link, ap, EDGE) {
 		emp = &pp->em_priv[link->pmp];
 		rc += sprintf(buf, "%lx\n", emp->led_state);
 	}
@@ -1941,7 +1941,7 @@ static void ahci_error_intr(struct ata_port *ap, u32 irq_stat)
 	u32 serror;
 
 	/* determine active link */
-	ata_port_for_each_link(link, ap)
+	ata_for_each_link(link, ap, EDGE)
 		if (ata_link_active(link))
 			break;
 	if (!link)

drivers/ata/ata_generic.c

@@ -57,10 +57,7 @@ static int generic_set_mode(struct ata_link *link, struct ata_device **unused)
 	if (pdev->vendor == PCI_VENDOR_ID_CENATEK)
 		dma_enabled = 0xFF;
 
-	ata_link_for_each_dev(dev, link) {
-		if (!ata_dev_enabled(dev))
-			continue;
-
+	ata_for_each_dev(dev, link, ENABLED) {
 		/* We don't really care */
 		dev->pio_mode = XFER_PIO_0;
 		dev->dma_mode = XFER_MW_DMA_0;

drivers/ata/ata_piix.c

@@ -1072,20 +1072,13 @@ static int piix_broken_suspend(void)
 	 * matching is necessary because dmi_system_id.matches is
 	 * limited to four entries.
 	 */
-	if (dmi_get_system_info(DMI_SYS_VENDOR) &&
-	    dmi_get_system_info(DMI_PRODUCT_NAME) &&
-	    dmi_get_system_info(DMI_PRODUCT_VERSION) &&
-	    dmi_get_system_info(DMI_PRODUCT_SERIAL) &&
-	    dmi_get_system_info(DMI_BOARD_VENDOR) &&
-	    dmi_get_system_info(DMI_BOARD_NAME) &&
-	    dmi_get_system_info(DMI_BOARD_VERSION) &&
-	    !strcmp(dmi_get_system_info(DMI_SYS_VENDOR), "TOSHIBA") &&
-	    !strcmp(dmi_get_system_info(DMI_PRODUCT_NAME), "000000") &&
-	    !strcmp(dmi_get_system_info(DMI_PRODUCT_VERSION), "000000") &&
-	    !strcmp(dmi_get_system_info(DMI_PRODUCT_SERIAL), "000000") &&
-	    !strcmp(dmi_get_system_info(DMI_BOARD_VENDOR), "TOSHIBA") &&
-	    !strcmp(dmi_get_system_info(DMI_BOARD_NAME), "Portable PC") &&
-	    !strcmp(dmi_get_system_info(DMI_BOARD_VERSION), "Version A0"))
+	if (dmi_match(DMI_SYS_VENDOR, "TOSHIBA") &&
+	    dmi_match(DMI_PRODUCT_NAME, "000000") &&
+	    dmi_match(DMI_PRODUCT_VERSION, "000000") &&
+	    dmi_match(DMI_PRODUCT_SERIAL, "000000") &&
+	    dmi_match(DMI_BOARD_VENDOR, "TOSHIBA") &&
+	    dmi_match(DMI_BOARD_NAME, "Portable PC") &&
+	    dmi_match(DMI_BOARD_VERSION, "Version A0"))
 		return 1;
 
 	return 0;

drivers/ata/libata-acpi.c

@@ -89,7 +89,7 @@ void ata_acpi_associate_sata_port(struct ata_port *ap)
 
 		ap->link.device->acpi_handle = NULL;
 
-		ata_port_for_each_link(link, ap) {
+		ata_for_each_link(link, ap, EDGE) {
 			acpi_integer adr = SATA_ADR(ap->port_no, link->pmp);
 
 			link->device->acpi_handle =
@@ -129,8 +129,8 @@ static void ata_acpi_detach_device(struct ata_port *ap, struct ata_device *dev)
 		struct ata_link *tlink;
 		struct ata_device *tdev;
 
-		ata_port_for_each_link(tlink, ap)
-			ata_link_for_each_dev(tdev, tlink)
+		ata_for_each_link(tlink, ap, EDGE)
+			ata_for_each_dev(tdev, tlink, ALL)
 				tdev->flags |= ATA_DFLAG_DETACH;
 	}
 
@@ -588,12 +588,9 @@ int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm)
 {
 	struct ata_device *dev;
 
-	ata_link_for_each_dev(dev, &ap->link) {
+	ata_for_each_dev(dev, &ap->link, ENABLED) {
 		unsigned long xfer_mask, udma_mask;
 
-		if (!ata_dev_enabled(dev))
-			continue;
-
 		xfer_mask = ata_acpi_gtm_xfermask(dev, gtm);
 		ata_unpack_xfermask(xfer_mask, NULL, NULL, &udma_mask);
 
@@ -893,7 +890,7 @@ void ata_acpi_on_resume(struct ata_port *ap)
 		 * use values set by _STM.  Cache _GTF result and
 		 * schedule _GTF.
 		 */
-		ata_link_for_each_dev(dev, &ap->link) {
+		ata_for_each_dev(dev, &ap->link, ALL) {
 			ata_acpi_clear_gtf(dev);
 			if (ata_dev_enabled(dev) &&
 			    ata_dev_get_GTF(dev, NULL) >= 0)
@@ -904,7 +901,7 @@ void ata_acpi_on_resume(struct ata_port *ap)
 		 * there's no reason to evaluate IDE _GTF early
 		 * without _STM.  Clear cache and schedule _GTF.
 		 */
-		ata_link_for_each_dev(dev, &ap->link) {
+		ata_for_each_dev(dev, &ap->link, ALL) {
 			ata_acpi_clear_gtf(dev);
 			if (ata_dev_enabled(dev))
 				dev->flags |= ATA_DFLAG_ACPI_PENDING;
@@ -932,8 +929,8 @@ void ata_acpi_set_state(struct ata_port *ap, pm_message_t state)
 	if (state.event == PM_EVENT_ON)
 		acpi_bus_set_power(ap->acpi_handle, ACPI_STATE_D0);
 
-	ata_link_for_each_dev(dev, &ap->link) {
-		if (dev->acpi_handle && ata_dev_enabled(dev))
+	ata_for_each_dev(dev, &ap->link, ENABLED) {
+		if (dev->acpi_handle)
 			acpi_bus_set_power(dev->acpi_handle,
 				state.event == PM_EVENT_ON ?
 					ACPI_STATE_D0 : ACPI_STATE_D3);

drivers/ata/libata-pmp.c

@@ -321,7 +321,7 @@ static void sata_pmp_quirks(struct ata_port *ap)
 
 	if (vendor == 0x1095 && devid == 0x3726) {
 		/* sil3726 quirks */
-		ata_port_for_each_link(link, ap) {
+		ata_for_each_link(link, ap, EDGE) {
 			/* Class code report is unreliable and SRST
 			 * times out under certain configurations.
 			 */
@@ -336,7 +336,7 @@ static void sata_pmp_quirks(struct ata_port *ap)
 		}
 	} else if (vendor == 0x1095 && devid == 0x4723) {
 		/* sil4723 quirks */
-		ata_port_for_each_link(link, ap) {
+		ata_for_each_link(link, ap, EDGE) {
 			/* class code report is unreliable */
 			if (link->pmp < 2)
 				link->flags |= ATA_LFLAG_ASSUME_ATA;
@@ -348,7 +348,7 @@ static void sata_pmp_quirks(struct ata_port *ap)
 		}
 	} else if (vendor == 0x1095 && devid == 0x4726) {
 		/* sil4726 quirks */
-		ata_port_for_each_link(link, ap) {
+		ata_for_each_link(link, ap, EDGE) {
 			/* Class code report is unreliable and SRST
 			 * times out under certain configurations.
 			 * Config device can be at port 0 or 5 and
@@ -450,7 +450,7 @@ int sata_pmp_attach(struct ata_device *dev)
 	if (ap->ops->pmp_attach)
 		ap->ops->pmp_attach(ap);
 
-	ata_port_for_each_link(tlink, ap)
+	ata_for_each_link(tlink, ap, EDGE)
 		sata_link_init_spd(tlink);
 
 	ata_acpi_associate_sata_port(ap);
@@ -487,7 +487,7 @@ static void sata_pmp_detach(struct ata_device *dev)
 	if (ap->ops->pmp_detach)
 		ap->ops->pmp_detach(ap);
 
-	ata_port_for_each_link(tlink, ap)
+	ata_for_each_link(tlink, ap, EDGE)
 		ata_eh_detach_dev(tlink->device);
 
 	spin_lock_irqsave(ap->lock, flags);
@@ -700,7 +700,7 @@ static int sata_pmp_eh_recover_pmp(struct ata_port *ap,
 		}
 
 		/* PMP is reset, SErrors cannot be trusted, scan all */
-		ata_port_for_each_link(tlink, ap) {
+		ata_for_each_link(tlink, ap, EDGE) {
 			struct ata_eh_context *ehc = &tlink->eh_context;
 
 			ehc->i.probe_mask |= ATA_ALL_DEVICES;
@@ -768,7 +768,7 @@ static int sata_pmp_eh_handle_disabled_links(struct ata_port *ap)
 
 	spin_lock_irqsave(ap->lock, flags);
 
-	ata_port_for_each_link(link, ap) {
+	ata_for_each_link(link, ap, EDGE) {
 		if (!(link->flags & ATA_LFLAG_DISABLED))
 			continue;
 
@@ -852,7 +852,7 @@ static int sata_pmp_eh_recover(struct ata_port *ap)
 	int cnt, rc;
 
 	pmp_tries = ATA_EH_PMP_TRIES;
-	ata_port_for_each_link(link, ap)
+	ata_for_each_link(link, ap, EDGE)
 		link_tries[link->pmp] = ATA_EH_PMP_LINK_TRIES;
 
  retry:
@@ -861,7 +861,7 @@ static int sata_pmp_eh_recover(struct ata_port *ap)
 		rc = ata_eh_recover(ap, ops->prereset, ops->softreset,
 				    ops->hardreset, ops->postreset, NULL);
 		if (rc) {
-			ata_link_for_each_dev(dev, &ap->link)
+			ata_for_each_dev(dev, &ap->link, ALL)
 				ata_dev_disable(dev);
 			return rc;
 		}
@@ -870,7 +870,7 @@ static int sata_pmp_eh_recover(struct ata_port *ap)
 			return 0;
 
 		/* new PMP online */
-		ata_port_for_each_link(link, ap)
+		ata_for_each_link(link, ap, EDGE)
 			link_tries[link->pmp] = ATA_EH_PMP_LINK_TRIES;
 
 		/* fall through */
@@ -942,7 +942,7 @@ static int sata_pmp_eh_recover(struct ata_port *ap)
 	}
 
 	cnt = 0;
-	ata_port_for_each_link(link, ap) {
+	ata_for_each_link(link, ap, EDGE) {
 		if (!(gscr_error & (1 << link->pmp)))
 			continue;
 

drivers/ata/libata-scsi.c

@@ -3229,12 +3229,12 @@ void ata_scsi_scan_host(struct ata_port *ap, int sync)
 		return;
 
  repeat:
-	ata_port_for_each_link(link, ap) {
-		ata_link_for_each_dev(dev, link) {
+	ata_for_each_link(link, ap, EDGE) {
+		ata_for_each_dev(dev, link, ENABLED) {
 			struct scsi_device *sdev;
 			int channel = 0, id = 0;
 
-			if (!ata_dev_enabled(dev) || dev->sdev)
+			if (dev->sdev)
 				continue;
 
 			if (ata_is_host_link(link))
@@ -3255,9 +3255,9 @@ void ata_scsi_scan_host(struct ata_port *ap, int sync)
 	 * failure occurred, scan would have failed silently.  Check
 	 * whether all devices are attached.
 	 */
-	ata_port_for_each_link(link, ap) {
-		ata_link_for_each_dev(dev, link) {
-			if (ata_dev_enabled(dev) && !dev->sdev)
+	ata_for_each_link(link, ap, EDGE) {
+		ata_for_each_dev(dev, link, ENABLED) {
+			if (!dev->sdev)
 				goto exit_loop;
 		}
 	}
@@ -3381,7 +3381,7 @@ static void ata_scsi_handle_link_detach(struct ata_link *link)
 	struct ata_port *ap = link->ap;
 	struct ata_device *dev;
 
-	ata_link_for_each_dev(dev, link) {
+	ata_for_each_dev(dev, link, ALL) {
 		unsigned long flags;
 
 		if (!(dev->flags & ATA_DFLAG_DETACHED))
@@ -3496,7 +3496,7 @@ static int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel,
 	if (devno == SCAN_WILD_CARD) {
 		struct ata_link *link;
 
-		ata_port_for_each_link(link, ap) {
+		ata_for_each_link(link, ap, EDGE) {
 			struct ata_eh_info *ehi = &link->eh_info;
 			ehi->probe_mask |= ATA_ALL_DEVICES;
 			ehi->action |= ATA_EH_RESET;
@@ -3544,11 +3544,11 @@ void ata_scsi_dev_rescan(struct work_struct *work)
 
 	spin_lock_irqsave(ap->lock, flags);
 
-	ata_port_for_each_link(link, ap) {
-		ata_link_for_each_dev(dev, link) {
+	ata_for_each_link(link, ap, EDGE) {
+		ata_for_each_dev(dev, link, ENABLED) {
 			struct scsi_device *sdev = dev->sdev;
 
-			if (!ata_dev_enabled(dev) || !sdev)
+			if (!sdev)
 				continue;
 			if (scsi_device_get(sdev))
 				continue;

drivers/ata/pata_bf54x.c

@@ -356,7 +356,6 @@ static void bfin_set_piomode(struct ata_port *ap, struct ata_device *adev)
  *	bfin_set_dmamode - Initialize host controller PATA DMA timings
  *	@ap: Port whose timings we are configuring
  *	@adev: um
- *	@udma: udma mode, 0 - 6
  *
  *	Set UDMA mode for device.
  *

drivers/ata/pata_it821x.c

@@ -465,8 +465,7 @@ static int it821x_smart_set_mode(struct ata_link *link, struct ata_device **unus
 {
 	struct ata_device *dev;
 
-	ata_link_for_each_dev(dev, link) {
-		if (ata_dev_enabled(dev)) {
+	ata_for_each_dev(dev, link, ENABLED) {
 		/* We don't really care */
 		dev->pio_mode = XFER_PIO_0;
 		dev->dma_mode = XFER_MW_DMA_0;
@@ -484,7 +483,6 @@ static int it821x_smart_set_mode(struct ata_link *link, struct ata_device **unus
 			dev->flags |= ATA_DFLAG_PIO;
 		}
 	}
-	}
 	return 0;
 }
 

drivers/ata/pata_ixp4xx_cf.c

@@ -30,15 +30,13 @@ static int ixp4xx_set_mode(struct ata_link *link, struct ata_device **error)
 {
 	struct ata_device *dev;
 
-	ata_link_for_each_dev(dev, link) {
-		if (ata_dev_enabled(dev)) {
+	ata_for_each_dev(dev, link, ENABLED) {
 		ata_dev_printk(dev, KERN_INFO, "configured for PIO0\n");
 		dev->pio_mode = XFER_PIO_0;
 		dev->xfer_mode = XFER_PIO_0;
 		dev->xfer_shift = ATA_SHIFT_PIO;
 		dev->flags |= ATA_DFLAG_PIO;
 	}
-	}
 	return 0;
 }
 

drivers/ata/pata_legacy.c

@@ -194,16 +194,13 @@ static int legacy_set_mode(struct ata_link *link, struct ata_device **unused)
 {
 	struct ata_device *dev;
 
-	ata_link_for_each_dev(dev, link) {
-		if (ata_dev_enabled(dev)) {
-			ata_dev_printk(dev, KERN_INFO,
-						"configured for PIO\n");
+	ata_for_each_dev(dev, link, ENABLED) {
+		ata_dev_printk(dev, KERN_INFO, "configured for PIO\n");
 		dev->pio_mode = XFER_PIO_0;
 		dev->xfer_mode = XFER_PIO_0;
 		dev->xfer_shift = ATA_SHIFT_PIO;
 		dev->flags |= ATA_DFLAG_PIO;
 	}
-	}
 	return 0;
 }
 
@@ -641,7 +638,6 @@ static void qdi6500_set_piomode(struct ata_port *ap, struct ata_device *adev)
  *	qdi6580dp_set_piomode		-	PIO setup for dual channel
  *	@ap: Port
  *	@adev: Device
- *	@irq: interrupt line
  *
  *	In dual channel mode the 6580 has one clock per channel and we have
  *	to software clockswitch in qc_issue.
@@ -1028,7 +1024,7 @@ static __init int legacy_init_one(struct legacy_probe *probe)
 	/* Nothing found means we drop the port as its probably not there */
 
 	ret = -ENODEV;
-	ata_link_for_each_dev(dev, &ap->link) {
+	ata_for_each_dev(dev, &ap->link, ALL) {
 		if (!ata_dev_absent(dev)) {
 			legacy_host[probe->slot] = host;
 			ld->platform_dev = pdev;

drivers/ata/pata_oldpiix.c

@@ -116,7 +116,6 @@ static void oldpiix_set_piomode (struct ata_port *ap, struct ata_device *adev)
  *	oldpiix_set_dmamode - Initialize host controller PATA DMA timings
  *	@ap: Port whose timings we are configuring
  *	@adev: Device to program
- *	@isich: True if the device is an ICH and has IOCFG registers
  *
  *	Set MWDMA mode for device, in host controller PCI config space.
  *

drivers/ata/pata_pdc2027x.c

@@ -281,7 +281,6 @@ static unsigned long pdc2027x_mode_filter(struct ata_device *adev, unsigned long
  *	pdc2027x_set_piomode - Initialize host controller PATA PIO timings
  *	@ap: Port to configure
  *	@adev: um
- *	@pio: PIO mode, 0 - 4
  *
  *	Set PIO mode for device.
  *
@@ -326,7 +325,6 @@ static void pdc2027x_set_piomode(struct ata_port *ap, struct ata_device *adev)
  *	pdc2027x_set_dmamode - Initialize host controller PATA UDMA timings
  *	@ap: Port to configure
  *	@adev: um
- *	@udma: udma mode, XFER_UDMA_0 to XFER_UDMA_6
  *
  *	Set UDMA mode for device.
  *
@@ -406,9 +404,7 @@ static int pdc2027x_set_mode(struct ata_link *link, struct ata_device **r_failed
 	if (rc < 0)
 		return rc;
 
-	ata_link_for_each_dev(dev, link) {
-		if (ata_dev_enabled(dev)) {
-
+	ata_for_each_dev(dev, link, ENABLED) {
 		pdc2027x_set_piomode(ap, dev);
 
 		/*
@@ -424,7 +420,6 @@ static int pdc2027x_set_mode(struct ata_link *link, struct ata_device **r_failed
 			pdc2027x_set_dmamode(ap, dev);
 		}
 	}
-	}
 	return 0;
 }
 

drivers/ata/pata_platform.c

@@ -34,15 +34,13 @@ static int pata_platform_set_mode(struct ata_link *link, struct ata_device **unu
 {
 	struct ata_device *dev;
 
-	ata_link_for_each_dev(dev, link) {
-		if (ata_dev_enabled(dev)) {
+	ata_for_each_dev(dev, link, ENABLED) {
 		/* We don't really care */
 		dev->pio_mode = dev->xfer_mode = XFER_PIO_0;
 		dev->xfer_shift = ATA_SHIFT_PIO;
 		dev->flags |= ATA_DFLAG_PIO;
 		ata_dev_printk(dev, KERN_INFO, "configured for PIO\n");
 	}
-	}
 	return 0;
 }
 

drivers/ata/pata_radisys.c

@@ -81,7 +81,6 @@ static void radisys_set_piomode (struct ata_port *ap, struct ata_device *adev)
  *	radisys_set_dmamode - Initialize host controller PATA DMA timings
  *	@ap: Port whose timings we are configuring
  *	@adev: Device to program
- *	@isich: True if the device is an ICH and has IOCFG registers
  *
  *	Set MWDMA mode for device, in host controller PCI config space.
  *

drivers/ata/pata_rz1000.c

@@ -38,8 +38,7 @@ static int rz1000_set_mode(struct ata_link *link, struct ata_device **unused)
 {
 	struct ata_device *dev;
 
-	ata_link_for_each_dev(dev, link) {
-		if (ata_dev_enabled(dev)) {
+	ata_for_each_dev(dev, link, ENABLED) {
 		/* We don't really care */
 		dev->pio_mode = XFER_PIO_0;
 		dev->xfer_mode = XFER_PIO_0;
@@ -47,7 +46,6 @@ static int rz1000_set_mode(struct ata_link *link, struct ata_device **unused)
 		dev->flags |= ATA_DFLAG_PIO;
 		ata_dev_printk(dev, KERN_INFO, "configured for PIO\n");
 	}
-	}
 	return 0;
 }
 

drivers/ata/pata_scc.c

@@ -210,7 +210,6 @@ static void scc_set_piomode (struct ata_port *ap, struct ata_device *adev)
  *	scc_set_dmamode - Initialize host controller PATA DMA timings
  *	@ap: Port whose timings we are configuring
  *	@adev: um
- *	@udma: udma mode, 0 - 6
  *
  *	Set UDMA mode for device.
  *

drivers/ata/pata_serverworks.c

@@ -138,7 +138,6 @@ static struct sv_cable_table cable_detect[] = {
 /**
  *	serverworks_cable_detect	-	cable detection
  *	@ap: ATA port
- *	@deadline: deadline jiffies for the operation
  *
  *	Perform cable detection according to the device and subvendor
  *	identifications

drivers/ata/pata_sis.c

@@ -112,7 +112,6 @@ static int sis_133_cable_detect(struct ata_port *ap)
 /**
  *	sis_66_cable_detect	-	check for 40/80 pin
  *	@ap: Port
- *	@deadline: deadline jiffies for the operation
  *
  *	Perform cable detection on the UDMA66, UDMA100 and early UDMA133
  *	SiS IDE controllers.

drivers/ata/sata_mv.c

@@ -1836,7 +1836,6 @@ static void mv_unexpected_intr(struct ata_port *ap, int edma_was_enabled)
 /**
  *      mv_err_intr - Handle error interrupts on the port
  *      @ap: ATA channel to manipulate
- *      @qc: affected command (non-NCQ), or NULL
  *
  *      Most cases require a full reset of the chip's state machine,
  *      which also performs a COMRESET.

drivers/ata/sata_sil.c

@@ -46,7 +46,9 @@
 #include <linux/libata.h>
 
 #define DRV_NAME	"sata_sil"
-#define DRV_VERSION	"2.3"
+#define DRV_VERSION	"2.4"
+
+#define SIL_DMA_BOUNDARY	0x7fffffffUL
 
 enum {
 	SIL_MMIO_BAR		= 5,
@@ -118,6 +120,10 @@ static void sil_dev_config(struct ata_device *dev);
 static int sil_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
 static int sil_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
 static int sil_set_mode(struct ata_link *link, struct ata_device **r_failed);
+static void sil_qc_prep(struct ata_queued_cmd *qc);
+static void sil_bmdma_setup(struct ata_queued_cmd *qc);
+static void sil_bmdma_start(struct ata_queued_cmd *qc);
+static void sil_bmdma_stop(struct ata_queued_cmd *qc);
 static void sil_freeze(struct ata_port *ap);
 static void sil_thaw(struct ata_port *ap);
 
@@ -167,13 +173,22 @@ static struct pci_driver sil_pci_driver = {
 };
 
 static struct scsi_host_template sil_sht = {
-	ATA_BMDMA_SHT(DRV_NAME),
+	ATA_BASE_SHT(DRV_NAME),
+	/** These controllers support Large Block Transfer which allows
+	    transfer chunks up to 2GB and which cross 64KB boundaries,
+	    therefore the DMA limits are more relaxed than standard ATA SFF. */
+	.dma_boundary		= SIL_DMA_BOUNDARY,
+	.sg_tablesize		= ATA_MAX_PRD
 };
 
 static struct ata_port_operations sil_ops = {
 	.inherits		= &ata_bmdma_port_ops,
 	.dev_config		= sil_dev_config,
 	.set_mode		= sil_set_mode,
+	.bmdma_setup            = sil_bmdma_setup,
+	.bmdma_start            = sil_bmdma_start,
+	.bmdma_stop		= sil_bmdma_stop,
+	.qc_prep		= sil_qc_prep,
 	.freeze			= sil_freeze,
 	.thaw			= sil_thaw,
 	.scr_read		= sil_scr_read,
@@ -249,6 +264,83 @@ module_param(slow_down, int, 0444);
 MODULE_PARM_DESC(slow_down, "Sledgehammer used to work around random problems, by limiting commands to 15 sectors (0=off, 1=on)");
 
 
+static void sil_bmdma_stop(struct ata_queued_cmd *qc)
+{
+	struct ata_port *ap = qc->ap;
+	void __iomem *mmio_base = ap->host->iomap[SIL_MMIO_BAR];
+	void __iomem *bmdma2 = mmio_base + sil_port[ap->port_no].bmdma2;
+
+	/* clear start/stop bit - can safely always write 0 */
+	iowrite8(0, bmdma2);
+
+	/* one-PIO-cycle guaranteed wait, per spec, for HDMA1:0 transition */
+	ata_sff_dma_pause(ap);
+}
+
+static void sil_bmdma_setup(struct ata_queued_cmd *qc)
+{
+	struct ata_port *ap = qc->ap;
+	void __iomem *bmdma = ap->ioaddr.bmdma_addr;
+
+	/* load PRD table addr. */
+	iowrite32(ap->prd_dma, bmdma + ATA_DMA_TABLE_OFS);
+
+	/* issue r/w command */
+	ap->ops->sff_exec_command(ap, &qc->tf);
+}
+
+static void sil_bmdma_start(struct ata_queued_cmd *qc)
+{
+	unsigned int rw = (qc->tf.flags & ATA_TFLAG_WRITE);
+	struct ata_port *ap = qc->ap;
+	void __iomem *mmio_base = ap->host->iomap[SIL_MMIO_BAR];
+	void __iomem *bmdma2 = mmio_base + sil_port[ap->port_no].bmdma2;
+	u8 dmactl = ATA_DMA_START;
+
+	/* set transfer direction, start host DMA transaction
+	   Note: For Large Block Transfer to work, the DMA must be started
+	   using the bmdma2 register. */
+	if (!rw)
+		dmactl |= ATA_DMA_WR;
+	iowrite8(dmactl, bmdma2);
+}
+
+/* The way God intended PCI IDE scatter/gather lists to look and behave... */
+static void sil_fill_sg(struct ata_queued_cmd *qc)
+{
+	struct scatterlist *sg;
+	struct ata_port *ap = qc->ap;
+	struct ata_prd *prd, *last_prd = NULL;
+	unsigned int si;
+
+	prd = &ap->prd[0];
+	for_each_sg(qc->sg, sg, qc->n_elem, si) {
+		/* Note h/w doesn't support 64-bit, so we unconditionally
+		 * truncate dma_addr_t to u32.
+		 */
+		u32 addr = (u32) sg_dma_address(sg);
+		u32 sg_len = sg_dma_len(sg);
+
+		prd->addr = cpu_to_le32(addr);
+		prd->flags_len = cpu_to_le32(sg_len);
+		VPRINTK("PRD[%u] = (0x%X, 0x%X)\n", pi, addr, sg_len);
+
+		last_prd = prd;
+		prd++;
+	}
+
+	if (likely(last_prd))
+		last_prd->flags_len |= cpu_to_le32(ATA_PRD_EOT);
+}
+
+static void sil_qc_prep(struct ata_queued_cmd *qc)
+{
+	if (!(qc->flags & ATA_QCFLAG_DMAMAP))
+		return;
+
+	sil_fill_sg(qc);
+}
+
 static unsigned char sil_get_device_cache_line(struct pci_dev *pdev)
 {
 	u8 cache_line = 0;
@@ -278,7 +370,7 @@ static int sil_set_mode(struct ata_link *link, struct ata_device **r_failed)
 	if (rc)
 		return rc;
 
-	ata_link_for_each_dev(dev, link) {
+	ata_for_each_dev(dev, link, ALL) {
 		if (!ata_dev_enabled(dev))
 			dev_mode[dev->devno] = 0;	/* PIO0/1/2 */
 		else if (dev->flags & ATA_DFLAG_PIO)

drivers/firmware/dmi_scan.c

@@ -582,3 +582,19 @@ int dmi_walk(void (*decode)(const struct dmi_header *))
 	return 0;
 }
 EXPORT_SYMBOL_GPL(dmi_walk);
+
+/**
+ * dmi_match - compare a string to the dmi field (if exists)
+ *
+ * Returns true if the requested field equals to the str (including NULL).
+ */
+bool dmi_match(enum dmi_field f, const char *str)
+{
+	const char *info = dmi_get_system_info(f);
+
+	if (info == NULL || str == NULL)
+		return info == str;
+
+	return !strcmp(info, str);
+}
+EXPORT_SYMBOL_GPL(dmi_match);

include/linux/dmi.h

@@ -47,6 +47,7 @@ extern int dmi_name_in_vendors(const char *str);
 extern int dmi_name_in_serial(const char *str);
 extern int dmi_available;
 extern int dmi_walk(void (*decode)(const struct dmi_header *));
+extern bool dmi_match(enum dmi_field f, const char *str);
 
 #else
 
@@ -61,6 +62,8 @@ static inline int dmi_name_in_serial(const char *s) { return 0; }
 #define dmi_available 0
 static inline int dmi_walk(void (*decode)(const struct dmi_header *))
 	{ return -1; }
+static inline bool dmi_match(enum dmi_field f, const char *str)
+	{ return false; }
 
 #endif
 

include/linux/libata.h

@@ -213,10 +213,11 @@ enum {
 	ATA_PFLAG_FROZEN	= (1 << 2), /* port is frozen */
 	ATA_PFLAG_RECOVERED	= (1 << 3), /* recovery action performed */
 	ATA_PFLAG_LOADING	= (1 << 4), /* boot/loading probe */
-	ATA_PFLAG_UNLOADING	= (1 << 5), /* module is unloading */
 	ATA_PFLAG_SCSI_HOTPLUG	= (1 << 6), /* SCSI hotplug scheduled */
 	ATA_PFLAG_INITIALIZING	= (1 << 7), /* being initialized, don't touch */
 	ATA_PFLAG_RESETTING	= (1 << 8), /* reset in progress */
+	ATA_PFLAG_UNLOADING	= (1 << 9), /* driver is being unloaded */
+	ATA_PFLAG_UNLOADED	= (1 << 10), /* driver is unloaded */
 
 	ATA_PFLAG_SUSPENDED	= (1 << 17), /* port is suspended (power) */
 	ATA_PFLAG_PM_PENDING	= (1 << 18), /* PM operation pending */
@@ -1285,26 +1286,62 @@ static inline int ata_link_active(struct ata_link *link)
 	return ata_tag_valid(link->active_tag) || link->sactive;
 }
 
-extern struct ata_link *__ata_port_next_link(struct ata_port *ap,
-					     struct ata_link *link,
-					     bool dev_only);
+/*
+ * Iterators
+ *
+ * ATA_LITER_* constants are used to select link iteration mode and
+ * ATA_DITER_* device iteration mode.
+ *
+ * For a custom iteration directly using ata_{link|dev}_next(), if
+ * @link or @dev, respectively, is NULL, the first element is
+ * returned.  @dev and @link can be any valid device or link and the
+ * next element according to the iteration mode will be returned.
+ * After the last element, NULL is returned.
+ */
+enum ata_link_iter_mode {
+	ATA_LITER_EDGE,		/* if present, PMP links only; otherwise,
+				 * host link.  no slave link */
+	ATA_LITER_HOST_FIRST,	/* host link followed by PMP or slave links */
+	ATA_LITER_PMP_FIRST,	/* PMP links followed by host link,
+				 * slave link still comes after host link */
+};
 
-#define __ata_port_for_each_link(link, ap) \
-	for ((link) = __ata_port_next_link((ap), NULL, false); (link); \
-	     (link) = __ata_port_next_link((ap), (link), false))
+enum ata_dev_iter_mode {
+	ATA_DITER_ENABLED,
+	ATA_DITER_ENABLED_REVERSE,
+	ATA_DITER_ALL,
+	ATA_DITER_ALL_REVERSE,
+};
 
-#define ata_port_for_each_link(link, ap) \
-	for ((link) = __ata_port_next_link((ap), NULL, true); (link); \
-	     (link) = __ata_port_next_link((ap), (link), true))
+extern struct ata_link *ata_link_next(struct ata_link *link,
+				      struct ata_port *ap,
+				      enum ata_link_iter_mode mode);
 
-#define ata_link_for_each_dev(dev, link) \
-	for ((dev) = (link)->device; \
-	     (dev) < (link)->device + ata_link_max_devices(link) || ((dev) = NULL); \
-	     (dev)++)
+extern struct ata_device *ata_dev_next(struct ata_device *dev,
+				       struct ata_link *link,
+				       enum ata_dev_iter_mode mode);
+
+/*
+ * Shortcut notation for iterations
+ *
+ * ata_for_each_link() iterates over each link of @ap according to
+ * @mode.  @link points to the current link in the loop.  @link is
+ * NULL after loop termination.  ata_for_each_dev() works the same way
+ * except that it iterates over each device of @link.
+ *
+ * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be
+ * specified when using the following shorthand notations.  Only the
+ * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be
+ * specified.  This not only increases brevity but also makes it
+ * impossible to use ATA_LITER_* for device iteration or vice-versa.
+ */
+#define ata_for_each_link(link, ap, mode) \
+	for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \
+	     (link) = ata_link_next((link), (ap), ATA_LITER_##mode))
 
-#define ata_link_for_each_dev_reverse(dev, link) \
-	for ((dev) = (link)->device + ata_link_max_devices(link) - 1; \
-	     (dev) >= (link)->device || ((dev) = NULL); (dev)--)
+#define ata_for_each_dev(dev, link, mode) \
+	for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \
+	     (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode))
 
 /**
  *	ata_ncq_enabled - Test whether NCQ is enabled