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

* 'upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: (119 commits)
  [libata] struct pci_dev related cleanups
  libata: use ata_exec_internal() for PMP register access
  libata: implement ATA_PFLAG_RESETTING
  libata: add @timeout to ata_exec_internal[_sg]()
  ahci: fix notification handling
  ahci: clean up PORT_IRQ_BAD_PMP enabling
  ahci: kill leftover from enabling NCQ over PMP
  libata: wrap schedule_timeout_uninterruptible() in loop
  libata: skip suppress reporting if ATA_EHI_QUIET
  libata: clear ehi description after initial host report
  pata_jmicron: match vendor and class code only
  libata: add ST9160821AS / 3.ALD to NCQ blacklist
  pata_acpi: ACPI driver support
  libata-core: Expose gtm methods for driver use
  libata: add HDT722516DLA380 to NCQ blacklist
  libata: blacklist NCQ on Seagate Barracuda ST380817AS
  [libata] Turn on ACPI by default
  libata_scsi: Fix ATAPI transfer lengths
  libata: correct handling of SRST reset sequences
  libata: Integrate ACPI-based PATA/SATA hotplug - version 5
  ...

Documentation/kernel-parameters.txt

@@ -865,6 +865,10 @@ and is between 256 and 4096 characters. It is defined in the file
 	lasi=		[HW,SCSI] PARISC LASI driver for the 53c700 chip
 			Format: addr:<io>,irq:<irq>
 
+	libata.noacpi	[LIBATA] Disables use of ACPI in libata suspend/resume
+			when set.
+			Format: <int>
+
 	load_ramdisk=	[RAM] List of ramdisks to load from floppy
 			See Documentation/ramdisk.txt.
 
@@ -1085,10 +1089,6 @@ and is between 256 and 4096 characters. It is defined in the file
 			emulation library even if a 387 maths coprocessor
 			is present.
 
-	noacpi		[LIBATA] Disables use of ACPI in libata suspend/resume
-			when set.
-			Format: <int>
-
 	noaliencache	[MM, NUMA, SLAB] Disables the allocation of alien
 			caches in the slab allocator.  Saves per-node memory,
 			but will impact performance.

drivers/ata/Kconfig

@@ -173,6 +173,15 @@ config SATA_INIC162X
 	help
 	  This option enables support for Initio 162x Serial ATA.
 
+config PATA_ACPI
+	tristate "ACPI firmware driver for PATA"
+	depends on ATA_ACPI
+	help
+	  This option enables an ACPI method driver which drives
+	  motherboard PATA controller interfaces through the ACPI
+	  firmware in the BIOS. This driver can sometimes handle
+	  otherwise unsupported hardware.
+
 config PATA_ALI
 	tristate "ALi PATA support (Experimental)"
 	depends on PCI && EXPERIMENTAL
@@ -192,16 +201,25 @@ config PATA_AMD
 	  If unsure, say N.
 
 config PATA_ARTOP
-	tristate "ARTOP 6210/6260 PATA support (Experimental)"
-	depends on PCI && EXPERIMENTAL
+	tristate "ARTOP 6210/6260 PATA support"
+	depends on PCI
 	help
 	  This option enables support for ARTOP PATA controllers.
 
 	  If unsure, say N.
 
+config PATA_AT32
+	tristate "Atmel AVR32 PATA support (Experimental)"
+	depends on AVR32 && PLATFORM_AT32AP && EXPERIMENTAL
+	help
+	  This option enables support for the IDE devices on the
+	  Atmel AT32AP platform.
+
+	  If unsure, say N.
+
 config PATA_ATIIXP
-	tristate "ATI PATA support (Experimental)"
-	depends on PCI && EXPERIMENTAL
+	tristate "ATI PATA support"
+	depends on PCI
 	help
 	  This option enables support for the ATI ATA interfaces
 	  found on the many ATI chipsets.
@@ -219,8 +237,8 @@ config PATA_CMD640_PCI
 	  If unsure, say N.
 
 config PATA_CMD64X
-	tristate "CMD64x PATA support (Very Experimental)"
-	depends on PCI&& EXPERIMENTAL
+	tristate "CMD64x PATA support"
+	depends on PCI
 	help
 	  This option enables support for the CMD64x series chips
 	  except for the CMD640.
@@ -282,8 +300,8 @@ config ATA_GENERIC
 	  If unsure, say N.
 
 config PATA_HPT366
-	tristate "HPT 366/368 PATA support (Experimental)"
-	depends on PCI && EXPERIMENTAL
+	tristate "HPT 366/368 PATA support"
+	depends on PCI
 	help
 	  This option enables support for the HPT 366 and 368
 	  PATA controllers via the new ATA layer.
@@ -432,6 +450,15 @@ config PATA_NS87410
 
 	  If unsure, say N.
 
+config PATA_NS87415
+	tristate "Nat Semi NS87415 PATA support (Experimental)"
+	depends on PCI && EXPERIMENTAL
+	help
+	  This option enables support for the National Semiconductor
+	  NS87415 PCI-IDE controller.
+
+	  If unsure, say N.
+
 config PATA_OPTI
 	tristate "OPTI621/6215 PATA support (Very Experimental)"
 	depends on PCI && EXPERIMENTAL
@@ -596,4 +623,20 @@ config PATA_SCC
 
 	  If unsure, say N.
 
+config PATA_BF54X
+	tristate "Blackfin 54x ATAPI support"
+	depends on BF542 || BF548 || BF549
+	help
+	  This option enables support for the built-in ATAPI controller on
+	  Blackfin 54x family chips.
+
+	  If unsure, say N.
+
+config PATA_BF54X_DMA
+	bool "DMA mode"
+	depends on PATA_BF54X
+	default y
+	help
+	  Enable DMA mode for Blackfin ATAPI controller.
+
 endif # ATA

drivers/ata/Makefile

@@ -21,6 +21,7 @@ obj-$(CONFIG_PDC_ADMA)		+= pdc_adma.o
 obj-$(CONFIG_PATA_ALI)		+= pata_ali.o
 obj-$(CONFIG_PATA_AMD)		+= pata_amd.o
 obj-$(CONFIG_PATA_ARTOP)	+= pata_artop.o
+obj-$(CONFIG_PATA_AT32)		+= pata_at32.o
 obj-$(CONFIG_PATA_ATIIXP)	+= pata_atiixp.o
 obj-$(CONFIG_PATA_CMD640_PCI)	+= pata_cmd640.o
 obj-$(CONFIG_PATA_CMD64X)	+= pata_cmd64x.o
@@ -39,6 +40,7 @@ obj-$(CONFIG_PATA_IT8213)	+= pata_it8213.o
 obj-$(CONFIG_PATA_JMICRON)	+= pata_jmicron.o
 obj-$(CONFIG_PATA_NETCELL)	+= pata_netcell.o
 obj-$(CONFIG_PATA_NS87410)	+= pata_ns87410.o
+obj-$(CONFIG_PATA_NS87415)	+= pata_ns87415.o
 obj-$(CONFIG_PATA_OPTI)		+= pata_opti.o
 obj-$(CONFIG_PATA_OPTIDMA)	+= pata_optidma.o
 obj-$(CONFIG_PATA_MPC52xx)	+= pata_mpc52xx.o
@@ -61,12 +63,16 @@ obj-$(CONFIG_PATA_SIS)		+= pata_sis.o
 obj-$(CONFIG_PATA_TRIFLEX)	+= pata_triflex.o
 obj-$(CONFIG_PATA_IXP4XX_CF)	+= pata_ixp4xx_cf.o
 obj-$(CONFIG_PATA_SCC)		+= pata_scc.o
+obj-$(CONFIG_PATA_BF54X)	+= pata_bf54x.o
 obj-$(CONFIG_PATA_PLATFORM)	+= pata_platform.o
 obj-$(CONFIG_PATA_ICSIDE)	+= pata_icside.o
+# Should be last but two libata driver
+obj-$(CONFIG_PATA_ACPI)		+= pata_acpi.o
 # Should be last but one libata driver
 obj-$(CONFIG_ATA_GENERIC)	+= ata_generic.o
 # Should be last libata driver
 obj-$(CONFIG_PATA_LEGACY)	+= pata_legacy.o
 
-libata-objs	:= libata-core.o libata-scsi.o libata-sff.o libata-eh.o
+libata-objs	:= libata-core.o libata-scsi.o libata-sff.o libata-eh.o \
+		   libata-pmp.o
 libata-$(CONFIG_ATA_ACPI)	+= libata-acpi.o

drivers/ata/ata_generic.c

@@ -34,7 +34,7 @@
 
 /**
  *	generic_set_mode	-	mode setting
- *	@ap: interface to set up
+ *	@link: link to set up
  *	@unused: returned device on error
  *
  *	Use a non standard set_mode function. We don't want to be tuned.
@@ -43,24 +43,24 @@
  *	and respect them.
  */
 
-static int generic_set_mode(struct ata_port *ap, struct ata_device **unused)
+static int generic_set_mode(struct ata_link *link, struct ata_device **unused)
 {
+	struct ata_port *ap = link->ap;
 	int dma_enabled = 0;
-	int i;
+	struct ata_device *dev;
 
 	/* Bits 5 and 6 indicate if DMA is active on master/slave */
 	if (ap->ioaddr.bmdma_addr)
 		dma_enabled = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS);
 
-	for (i = 0; i < ATA_MAX_DEVICES; i++) {
-		struct ata_device *dev = &ap->device[i];
+	ata_link_for_each_dev(dev, link) {
 		if (ata_dev_enabled(dev)) {
 			/* We don't really care */
 			dev->pio_mode = XFER_PIO_0;
 			dev->dma_mode = XFER_MW_DMA_0;
 			/* We do need the right mode information for DMA or PIO
 			   and this comes from the current configuration flags */
-			if (dma_enabled & (1 << (5 + i))) {
+			if (dma_enabled & (1 << (5 + dev->devno))) {
 				ata_id_to_dma_mode(dev, XFER_MW_DMA_0);
 				dev->flags &= ~ATA_DFLAG_PIO;
 			} else {
@@ -95,7 +95,6 @@ static struct scsi_host_template generic_sht = {
 static struct ata_port_operations generic_port_ops = {
 	.set_mode	= generic_set_mode,
 
-	.port_disable	= ata_port_disable,
 	.tf_load	= ata_tf_load,
 	.tf_read	= ata_tf_read,
 	.check_status 	= ata_check_status,
@@ -121,9 +120,8 @@ static struct ata_port_operations generic_port_ops = {
 	.irq_handler	= ata_interrupt,
 	.irq_clear	= ata_bmdma_irq_clear,
 	.irq_on		= ata_irq_on,
-	.irq_ack	= ata_irq_ack,
 
-	.port_start	= ata_port_start,
+	.port_start	= ata_sff_port_start,
 };
 
 static int all_generic_ide;		/* Set to claim all devices */

drivers/ata/ata_piix.c

@@ -123,7 +123,6 @@ enum {
 	ich_pata_33		= 1,	/* ICH up to UDMA 33 only */
 	ich_pata_66		= 2,	/* ICH up to 66 Mhz */
 	ich_pata_100		= 3,	/* ICH up to UDMA 100 */
-	ich_pata_133		= 4,	/* ICH up to UDMA 133 */
 	ich5_sata		= 5,
 	ich6_sata		= 6,
 	ich6_sata_ahci		= 7,
@@ -199,7 +198,7 @@ static const struct pci_device_id piix_pci_tbl[] = {
 	{ 0x8086, 0x24CA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
 	{ 0x8086, 0x24CB, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
 	/* Intel ICH5 */
-	{ 0x8086, 0x24DB, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_133 },
+	{ 0x8086, 0x24DB, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
 	/* C-ICH (i810E2) */
 	{ 0x8086, 0x245B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
 	/* ESB (855GME/875P + 6300ESB) UDMA 100  */
@@ -207,7 +206,7 @@ static const struct pci_device_id piix_pci_tbl[] = {
 	/* ICH6 (and 6) (i915) UDMA 100 */
 	{ 0x8086, 0x266F, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
 	/* ICH7/7-R (i945, i975) UDMA 100*/
-	{ 0x8086, 0x27DF, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_133 },
+	{ 0x8086, 0x27DF, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
 	{ 0x8086, 0x269E, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
 	/* ICH8 Mobile PATA Controller */
 	{ 0x8086, 0x2850, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
@@ -290,7 +289,6 @@ static struct scsi_host_template piix_sht = {
 };
 
 static const struct ata_port_operations piix_pata_ops = {
-	.port_disable		= ata_port_disable,
 	.set_piomode		= piix_set_piomode,
 	.set_dmamode		= piix_set_dmamode,
 	.mode_filter		= ata_pci_default_filter,
@@ -318,13 +316,11 @@ static const struct ata_port_operations piix_pata_ops = {
 	.irq_handler		= ata_interrupt,
 	.irq_clear		= ata_bmdma_irq_clear,
 	.irq_on			= ata_irq_on,
-	.irq_ack		= ata_irq_ack,
 
 	.port_start		= ata_port_start,
 };
 
 static const struct ata_port_operations ich_pata_ops = {
-	.port_disable		= ata_port_disable,
 	.set_piomode		= piix_set_piomode,
 	.set_dmamode		= ich_set_dmamode,
 	.mode_filter		= ata_pci_default_filter,
@@ -352,14 +348,11 @@ static const struct ata_port_operations ich_pata_ops = {
 	.irq_handler		= ata_interrupt,
 	.irq_clear		= ata_bmdma_irq_clear,
 	.irq_on			= ata_irq_on,
-	.irq_ack		= ata_irq_ack,
 
 	.port_start		= ata_port_start,
 };
 
 static const struct ata_port_operations piix_sata_ops = {
-	.port_disable		= ata_port_disable,
-
 	.tf_load		= ata_tf_load,
 	.tf_read		= ata_tf_read,
 	.check_status		= ata_check_status,
@@ -382,7 +375,6 @@ static const struct ata_port_operations piix_sata_ops = {
 	.irq_handler		= ata_interrupt,
 	.irq_clear		= ata_bmdma_irq_clear,
 	.irq_on			= ata_irq_on,
-	.irq_ack		= ata_irq_ack,
 
 	.port_start		= ata_port_start,
 };
@@ -445,15 +437,15 @@ static const struct piix_map_db ich8_map_db = {
 };
 
 static const struct piix_map_db tolapai_map_db = {
-        .mask = 0x3,
-        .port_enable = 0x3,
-        .map = {
-                /* PM   PS   SM   SS       MAP */
-                {  P0,  NA,  P1,  NA }, /* 00b */
-                {  RV,  RV,  RV,  RV }, /* 01b */
-                {  RV,  RV,  RV,  RV }, /* 10b */
-                {  RV,  RV,  RV,  RV },
-        },
+	.mask = 0x3,
+	.port_enable = 0x3,
+	.map = {
+		/* PM   PS   SM   SS       MAP */
+		{  P0,  NA,  P1,  NA }, /* 00b */
+		{  RV,  RV,  RV,  RV }, /* 01b */
+		{  RV,  RV,  RV,  RV }, /* 10b */
+		{  RV,  RV,  RV,  RV },
+	},
 };
 
 static const struct piix_map_db *piix_map_db_table[] = {
@@ -466,7 +458,7 @@ static const struct piix_map_db *piix_map_db_table[] = {
 };
 
 static struct ata_port_info piix_port_info[] = {
-	/* piix_pata_33: 0:  PIIX4 at 33MHz */
+	[piix_pata_33] =	/* PIIX4 at 33MHz */
 	{
 		.sht		= &piix_sht,
 		.flags		= PIIX_PATA_FLAGS,
@@ -476,7 +468,7 @@ static struct ata_port_info piix_port_info[] = {
 		.port_ops	= &piix_pata_ops,
 	},
 
-	/* ich_pata_33: 1 	ICH0 - ICH at 33Mhz*/
+	[ich_pata_33] = 	/* ICH0 - ICH at 33Mhz*/
 	{
 		.sht		= &piix_sht,
 		.flags		= PIIX_PATA_FLAGS,
@@ -485,7 +477,8 @@ static struct ata_port_info piix_port_info[] = {
 		.udma_mask	= ATA_UDMA2, /* UDMA33 */
 		.port_ops	= &ich_pata_ops,
 	},
-	/* ich_pata_66: 2 	ICH controllers up to 66MHz */
+
+	[ich_pata_66] = 	/* ICH controllers up to 66MHz */
 	{
 		.sht		= &piix_sht,
 		.flags		= PIIX_PATA_FLAGS,
@@ -495,7 +488,7 @@ static struct ata_port_info piix_port_info[] = {
 		.port_ops	= &ich_pata_ops,
 	},
 
-	/* ich_pata_100: 3 */
+	[ich_pata_100] =
 	{
 		.sht		= &piix_sht,
 		.flags		= PIIX_PATA_FLAGS | PIIX_FLAG_CHECKINTR,
@@ -505,17 +498,7 @@ static struct ata_port_info piix_port_info[] = {
 		.port_ops	= &ich_pata_ops,
 	},
 
-	/* ich_pata_133: 4 	ICH with full UDMA6 */
-	{
-		.sht		= &piix_sht,
-		.flags		= PIIX_PATA_FLAGS | PIIX_FLAG_CHECKINTR,
-		.pio_mask 	= 0x1f,	/* pio 0-4 */
-		.mwdma_mask	= 0x06, /* Check: maybe 0x07  */
-		.udma_mask	= ATA_UDMA6, /* UDMA133 */
-		.port_ops	= &ich_pata_ops,
-	},
-
-	/* ich5_sata: 5 */
+	[ich5_sata] =
 	{
 		.sht		= &piix_sht,
 		.flags		= PIIX_SATA_FLAGS,
@@ -525,7 +508,7 @@ static struct ata_port_info piix_port_info[] = {
 		.port_ops	= &piix_sata_ops,
 	},
 
-	/* ich6_sata: 6 */
+	[ich6_sata] =
 	{
 		.sht		= &piix_sht,
 		.flags		= PIIX_SATA_FLAGS | PIIX_FLAG_SCR,
@@ -535,7 +518,7 @@ static struct ata_port_info piix_port_info[] = {
 		.port_ops	= &piix_sata_ops,
 	},
 
-	/* ich6_sata_ahci: 7 */
+	[ich6_sata_ahci] =
 	{
 		.sht		= &piix_sht,
 		.flags		= PIIX_SATA_FLAGS | PIIX_FLAG_SCR |
@@ -546,7 +529,7 @@ static struct ata_port_info piix_port_info[] = {
 		.port_ops	= &piix_sata_ops,
 	},
 
-	/* ich6m_sata_ahci: 8 */
+	[ich6m_sata_ahci] =
 	{
 		.sht		= &piix_sht,
 		.flags		= PIIX_SATA_FLAGS | PIIX_FLAG_SCR |
@@ -557,7 +540,7 @@ static struct ata_port_info piix_port_info[] = {
 		.port_ops	= &piix_sata_ops,
 	},
 
-	/* ich8_sata_ahci: 9 */
+	[ich8_sata_ahci] =
 	{
 		.sht		= &piix_sht,
 		.flags		= PIIX_SATA_FLAGS | PIIX_FLAG_SCR |
@@ -568,7 +551,7 @@ static struct ata_port_info piix_port_info[] = {
 		.port_ops	= &piix_sata_ops,
 	},
 
-	/* piix_pata_mwdma: 10:  PIIX3 MWDMA only */
+	[piix_pata_mwdma] = 	/* PIIX3 MWDMA only */
 	{
 		.sht		= &piix_sht,
 		.flags		= PIIX_PATA_FLAGS,
@@ -577,7 +560,7 @@ static struct ata_port_info piix_port_info[] = {
 		.port_ops	= &piix_pata_ops,
 	},
 
-	/* tolapai_sata_ahci: 11: */
+	[tolapai_sata_ahci] =
 	{
 		.sht		= &piix_sht,
 		.flags		= PIIX_SATA_FLAGS | PIIX_FLAG_SCR |
@@ -615,6 +598,7 @@ static const struct ich_laptop ich_laptop[] = {
 	{ 0x27DF, 0x0005, 0x0280 },	/* ICH7 on Acer 5602WLMi */
 	{ 0x27DF, 0x1025, 0x0110 },	/* ICH7 on Acer 3682WLMi */
 	{ 0x27DF, 0x1043, 0x1267 },	/* ICH7 on Asus W5F */
+	{ 0x27DF, 0x103C, 0x30A1 },	/* ICH7 on HP Compaq nc2400 */
 	{ 0x24CA, 0x1025, 0x0061 },	/* ICH4 on ACER Aspire 2023WLMi */
 	/* end marker */
 	{ 0, }
@@ -657,19 +641,20 @@ static int ich_pata_cable_detect(struct ata_port *ap)
 
 /**
  *	piix_pata_prereset - prereset for PATA host controller
- *	@ap: Target port
+ *	@link: Target link
  *	@deadline: deadline jiffies for the operation
  *
  *	LOCKING:
  *	None (inherited from caller).
  */
-static int piix_pata_prereset(struct ata_port *ap, unsigned long deadline)
+static int piix_pata_prereset(struct ata_link *link, unsigned long deadline)
 {
+	struct ata_port *ap = link->ap;
 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 
 	if (!pci_test_config_bits(pdev, &piix_enable_bits[ap->port_no]))
 		return -ENOENT;
-	return ata_std_prereset(ap, deadline);
+	return ata_std_prereset(link, deadline);
 }
 
 static void piix_pata_error_handler(struct ata_port *ap)

drivers/ata/libata-acpi.c

@@ -14,6 +14,7 @@
 #include <linux/acpi.h>
 #include <linux/libata.h>
 #include <linux/pci.h>
+#include <scsi/scsi_device.h>
 #include "libata.h"
 
 #include <acpi/acpi_bus.h>
@@ -40,11 +41,40 @@ static int is_pci_dev(struct device *dev)
 	return (dev->bus == &pci_bus_type);
 }
 
-static void ata_acpi_associate_sata_port(struct ata_port *ap)
+/**
+ * ata_acpi_associate_sata_port - associate SATA port with ACPI objects
+ * @ap: target SATA port
+ *
+ * Look up ACPI objects associated with @ap and initialize acpi_handle
+ * fields of @ap, the port and devices accordingly.
+ *
+ * LOCKING:
+ * EH context.
+ *
+ * RETURNS:
+ * 0 on success, -errno on failure.
+ */
+void ata_acpi_associate_sata_port(struct ata_port *ap)
 {
-	acpi_integer adr = SATA_ADR(ap->port_no, NO_PORT_MULT);
+	WARN_ON(!(ap->flags & ATA_FLAG_ACPI_SATA));
+
+	if (!ap->nr_pmp_links) {
+		acpi_integer adr = SATA_ADR(ap->port_no, NO_PORT_MULT);
+
+		ap->link.device->acpi_handle =
+			acpi_get_child(ap->host->acpi_handle, adr);
+	} else {
+		struct ata_link *link;
+
+		ap->link.device->acpi_handle = NULL;
 
-	ap->device->acpi_handle = acpi_get_child(ap->host->acpi_handle, adr);
+		ata_port_for_each_link(link, ap) {
+			acpi_integer adr = SATA_ADR(ap->port_no, link->pmp);
+
+			link->device->acpi_handle =
+				acpi_get_child(ap->host->acpi_handle, adr);
+		}
+	}
 }
 
 static void ata_acpi_associate_ide_port(struct ata_port *ap)
@@ -60,12 +90,53 @@ static void ata_acpi_associate_ide_port(struct ata_port *ap)
 		max_devices++;
 
 	for (i = 0; i < max_devices; i++) {
-		struct ata_device *dev = &ap->device[i];
+		struct ata_device *dev = &ap->link.device[i];
 
 		dev->acpi_handle = acpi_get_child(ap->acpi_handle, i);
 	}
 }
 
+static void ata_acpi_handle_hotplug (struct ata_port *ap, struct kobject *kobj,
+				     u32 event)
+{
+	char event_string[12];
+	char *envp[] = { event_string, NULL };
+	struct ata_eh_info *ehi = &ap->link.eh_info;
+
+	if (event == 0 || event == 1) {
+	       unsigned long flags;
+	       spin_lock_irqsave(ap->lock, flags);
+	       ata_ehi_clear_desc(ehi);
+	       ata_ehi_push_desc(ehi, "ACPI event");
+	       ata_ehi_hotplugged(ehi);
+	       ata_port_freeze(ap);
+	       spin_unlock_irqrestore(ap->lock, flags);
+	}
+
+	if (kobj) {
+	        sprintf(event_string, "BAY_EVENT=%d", event);
+		kobject_uevent_env(kobj, KOBJ_CHANGE, envp);
+	}
+}
+
+static void ata_acpi_dev_notify(acpi_handle handle, u32 event, void *data)
+{
+	struct ata_device *dev = data;
+	struct kobject *kobj = NULL;
+
+	if (dev->sdev)
+		kobj = &dev->sdev->sdev_gendev.kobj;
+
+	ata_acpi_handle_hotplug (dev->link->ap, kobj, event);
+}
+
+static void ata_acpi_ap_notify(acpi_handle handle, u32 event, void *data)
+{
+	struct ata_port *ap = data;
+
+	ata_acpi_handle_hotplug (ap, &ap->dev->kobj, event);
+}
+
 /**
  * ata_acpi_associate - associate ATA host with ACPI objects
  * @host: target ATA host
@@ -81,7 +152,7 @@ static void ata_acpi_associate_ide_port(struct ata_port *ap)
  */
 void ata_acpi_associate(struct ata_host *host)
 {
-	int i;
+	int i, j;
 
 	if (!is_pci_dev(host->dev) || libata_noacpi)
 		return;
@@ -97,6 +168,22 @@ void ata_acpi_associate(struct ata_host *host)
 			ata_acpi_associate_sata_port(ap);
 		else
 			ata_acpi_associate_ide_port(ap);
+
+		if (ap->acpi_handle)
+			acpi_install_notify_handler (ap->acpi_handle,
+						     ACPI_SYSTEM_NOTIFY,
+						     ata_acpi_ap_notify,
+						     ap);
+
+		for (j = 0; j < ata_link_max_devices(&ap->link); j++) {
+			struct ata_device *dev = &ap->link.device[j];
+
+			if (dev->acpi_handle)
+				acpi_install_notify_handler (dev->acpi_handle,
+							     ACPI_SYSTEM_NOTIFY,
+							     ata_acpi_dev_notify,
+							     dev);
+		}
 	}
 }
 
@@ -113,7 +200,7 @@ void ata_acpi_associate(struct ata_host *host)
  * RETURNS:
  * 0 on success, -ENOENT if _GTM doesn't exist, -errno on failure.
  */
-static int ata_acpi_gtm(const struct ata_port *ap, struct ata_acpi_gtm *gtm)
+int ata_acpi_gtm(const struct ata_port *ap, struct ata_acpi_gtm *gtm)
 {
 	struct acpi_buffer output = { .length = ACPI_ALLOCATE_BUFFER };
 	union acpi_object *out_obj;
@@ -157,6 +244,8 @@ static int ata_acpi_gtm(const struct ata_port *ap, struct ata_acpi_gtm *gtm)
 	return rc;
 }
 
+EXPORT_SYMBOL_GPL(ata_acpi_gtm);
+
 /**
  * ata_acpi_stm - execute _STM
  * @ap: target ATA port
@@ -170,7 +259,7 @@ static int ata_acpi_gtm(const struct ata_port *ap, struct ata_acpi_gtm *gtm)
  * RETURNS:
  * 0 on success, -ENOENT if _STM doesn't exist, -errno on failure.
  */
-static int ata_acpi_stm(const struct ata_port *ap, struct ata_acpi_gtm *stm)
+int ata_acpi_stm(const struct ata_port *ap, struct ata_acpi_gtm *stm)
 {
 	acpi_status status;
 	struct acpi_object_list         input;
@@ -182,10 +271,10 @@ static int ata_acpi_stm(const struct ata_port *ap, struct ata_acpi_gtm *stm)
 	/* Buffers for id may need byteswapping ? */
 	in_params[1].type = ACPI_TYPE_BUFFER;
 	in_params[1].buffer.length = 512;
-	in_params[1].buffer.pointer = (u8 *)ap->device[0].id;
+	in_params[1].buffer.pointer = (u8 *)ap->link.device[0].id;
 	in_params[2].type = ACPI_TYPE_BUFFER;
 	in_params[2].buffer.length = 512;
-	in_params[2].buffer.pointer = (u8 *)ap->device[1].id;
+	in_params[2].buffer.pointer = (u8 *)ap->link.device[1].id;
 
 	input.count = 3;
 	input.pointer = in_params;
@@ -202,6 +291,8 @@ static int ata_acpi_stm(const struct ata_port *ap, struct ata_acpi_gtm *stm)
 	return 0;
 }
 
+EXPORT_SYMBOL_GPL(ata_acpi_stm);
+
 /**
  * ata_dev_get_GTF - get the drive bootup default taskfile settings
  * @dev: target ATA device
@@ -226,7 +317,7 @@ static int ata_acpi_stm(const struct ata_port *ap, struct ata_acpi_gtm *stm)
 static int ata_dev_get_GTF(struct ata_device *dev, struct ata_acpi_gtf **gtf,
 			   void **ptr_to_free)
 {
-	struct ata_port *ap = dev->ap;
+	struct ata_port *ap = dev->link->ap;
 	acpi_status status;
 	struct acpi_buffer output;
 	union acpi_object *out_obj;
@@ -295,6 +386,44 @@ static int ata_dev_get_GTF(struct ata_device *dev, struct ata_acpi_gtf **gtf,
 	return rc;
 }
 
+/**
+ * ata_acpi_cbl_80wire		-	Check for 80 wire cable
+ * @ap: Port to check
+ *
+ * Return 1 if the ACPI mode data for this port indicates the BIOS selected
+ * an 80wire mode.
+ */
+
+int ata_acpi_cbl_80wire(struct ata_port *ap)
+{
+	struct ata_acpi_gtm gtm;
+	int valid = 0;
+	
+	/* No _GTM data, no information */
+	if (ata_acpi_gtm(ap, &gtm) < 0)
+		return 0;
+		
+	/* Split timing, DMA enabled */
+	if ((gtm.flags & 0x11) == 0x11 && gtm.drive[0].dma < 55)
+		valid |= 1;
+	if ((gtm.flags & 0x14) == 0x14 && gtm.drive[1].dma < 55)
+		valid |= 2;
+	/* Shared timing, DMA enabled */
+	if ((gtm.flags & 0x11) == 0x01 && gtm.drive[0].dma < 55)
+		valid |= 1;
+	if ((gtm.flags & 0x14) == 0x04 && gtm.drive[0].dma < 55)
+		valid |= 2;
+
+	/* Drive check */
+	if ((valid & 1) && ata_dev_enabled(&ap->link.device[0]))
+		return 1;
+	if ((valid & 2) && ata_dev_enabled(&ap->link.device[1]))
+		return 1;
+	return 0;
+}
+
+EXPORT_SYMBOL_GPL(ata_acpi_cbl_80wire);
+
 /**
  * taskfile_load_raw - send taskfile registers to host controller
  * @dev: target ATA device
@@ -320,7 +449,7 @@ static int ata_dev_get_GTF(struct ata_device *dev, struct ata_acpi_gtf **gtf,
 static int taskfile_load_raw(struct ata_device *dev,
 			      const struct ata_acpi_gtf *gtf)
 {
-	struct ata_port *ap = dev->ap;
+	struct ata_port *ap = dev->link->ap;
 	struct ata_taskfile tf, rtf;
 	unsigned int err_mask;
 
@@ -349,7 +478,7 @@ static int taskfile_load_raw(struct ata_device *dev,
 			       tf.lbal, tf.lbam, tf.lbah, tf.device);
 
 	rtf = tf;
-	err_mask = ata_exec_internal(dev, &rtf, NULL, DMA_NONE, NULL, 0);
+	err_mask = ata_exec_internal(dev, &rtf, NULL, DMA_NONE, NULL, 0, 0);
 	if (err_mask) {
 		ata_dev_printk(dev, KERN_ERR,
 			"ACPI cmd %02x/%02x:%02x:%02x:%02x:%02x:%02x failed "
@@ -424,7 +553,7 @@ static int ata_acpi_exec_tfs(struct ata_device *dev)
  */
 static int ata_acpi_push_id(struct ata_device *dev)
 {
-	struct ata_port *ap = dev->ap;
+	struct ata_port *ap = dev->link->ap;
 	int err;
 	acpi_status status;
 	struct acpi_object_list input;
@@ -508,7 +637,7 @@ int ata_acpi_on_suspend(struct ata_port *ap)
  */
 void ata_acpi_on_resume(struct ata_port *ap)
 {
-	int i;
+	struct ata_device *dev;
 
 	if (ap->acpi_handle && (ap->pflags & ATA_PFLAG_GTM_VALID)) {
 		BUG_ON(ap->flags & ATA_FLAG_ACPI_SATA);
@@ -518,8 +647,8 @@ void ata_acpi_on_resume(struct ata_port *ap)
 	}
 
 	/* schedule _GTF */
-	for (i = 0; i < ATA_MAX_DEVICES; i++)
-		ap->device[i].flags |= ATA_DFLAG_ACPI_PENDING;
+	ata_link_for_each_dev(dev, &ap->link)
+		dev->flags |= ATA_DFLAG_ACPI_PENDING;
 }
 
 /**
@@ -538,8 +667,8 @@ void ata_acpi_on_resume(struct ata_port *ap)
  */
 int ata_acpi_on_devcfg(struct ata_device *dev)
 {
-	struct ata_port *ap = dev->ap;
-	struct ata_eh_context *ehc = &ap->eh_context;
+	struct ata_port *ap = dev->link->ap;
+	struct ata_eh_context *ehc = &ap->link.eh_context;
 	int acpi_sata = ap->flags & ATA_FLAG_ACPI_SATA;
 	int rc;
 

drivers/ata/libata-sff.c

@@ -64,46 +64,6 @@ u8 ata_irq_on(struct ata_port *ap)
 	return tmp;
 }
 
-u8 ata_dummy_irq_on (struct ata_port *ap) 	{ return 0; }
-
-/**
- *	ata_irq_ack - Acknowledge a device interrupt.
- *	@ap: Port on which interrupts are enabled.
- *
- *	Wait up to 10 ms for legacy IDE device to become idle (BUSY
- *	or BUSY+DRQ clear).  Obtain dma status and port status from
- *	device.  Clear the interrupt.  Return port status.
- *
- *	LOCKING:
- */
-
-u8 ata_irq_ack(struct ata_port *ap, unsigned int chk_drq)
-{
-	unsigned int bits = chk_drq ? ATA_BUSY | ATA_DRQ : ATA_BUSY;
-	u8 host_stat = 0, post_stat = 0, status;
-
-	status = ata_busy_wait(ap, bits, 1000);
-	if (status & bits)
-		if (ata_msg_err(ap))
-			printk(KERN_ERR "abnormal status 0x%X\n", status);
-
-	if (ap->ioaddr.bmdma_addr) {
-		/* get controller status; clear intr, err bits */
-		host_stat = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS);
-		iowrite8(host_stat | ATA_DMA_INTR | ATA_DMA_ERR,
-			 ap->ioaddr.bmdma_addr + ATA_DMA_STATUS);
-
-		post_stat = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS);
-	}
-	if (ata_msg_intr(ap))
-		printk(KERN_INFO "%s: irq ack: host_stat 0x%X, new host_stat 0x%X, drv_stat 0x%X\n",
-			__FUNCTION__,
-			host_stat, post_stat, status);
-	return status;
-}
-
-u8 ata_dummy_irq_ack(struct ata_port *ap, unsigned int chk_drq) { return 0; }
-
 /**
  *	ata_tf_load - send taskfile registers to host controller
  *	@ap: Port to which output is sent
@@ -445,7 +405,7 @@ void ata_bmdma_drive_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
 	unsigned long flags;
 	int thaw = 0;
 
-	qc = __ata_qc_from_tag(ap, ap->active_tag);
+	qc = __ata_qc_from_tag(ap, ap->link.active_tag);
 	if (qc && !(qc->flags & ATA_QCFLAG_FAILED))
 		qc = NULL;
 
@@ -500,7 +460,7 @@ void ata_bmdma_error_handler(struct ata_port *ap)
 	ata_reset_fn_t hardreset;
 
 	hardreset = NULL;
-	if (sata_scr_valid(ap))
+	if (sata_scr_valid(&ap->link))
 		hardreset = sata_std_hardreset;
 
 	ata_bmdma_drive_eh(ap, ata_std_prereset, ata_std_softreset, hardreset,
@@ -607,6 +567,9 @@ int ata_pci_init_bmdma(struct ata_host *host)
 		if ((!(ap->flags & ATA_FLAG_IGN_SIMPLEX)) &&
 		    (ioread8(bmdma + 2) & 0x80))
 			host->flags |= ATA_HOST_SIMPLEX;
+
+		ata_port_desc(ap, "bmdma 0x%llx",
+			(unsigned long long)pci_resource_start(pdev, 4) + 8 * i);
 	}
 
 	return 0;
@@ -674,6 +637,10 @@ int ata_pci_init_sff_host(struct ata_host *host)
 			((unsigned long)iomap[base + 1] | ATA_PCI_CTL_OFS);
 		ata_std_ports(&ap->ioaddr);
 
+		ata_port_desc(ap, "cmd 0x%llx ctl 0x%llx",
+			(unsigned long long)pci_resource_start(pdev, base),
+			(unsigned long long)pci_resource_start(pdev, base + 1));
+
 		mask |= 1 << i;
 	}
 
@@ -844,24 +811,30 @@ int ata_pci_init_one(struct pci_dev *pdev,
 				      IRQF_SHARED, DRV_NAME, host);
 		if (rc)
 			goto err_out;
-		host->irq = pdev->irq;
+
+		ata_port_desc(host->ports[0], "irq %d", pdev->irq);
+		ata_port_desc(host->ports[1], "irq %d", pdev->irq);
 	} else {
 		if (!ata_port_is_dummy(host->ports[0])) {
-			host->irq = ATA_PRIMARY_IRQ(pdev);
-			rc = devm_request_irq(dev, host->irq,
+			rc = devm_request_irq(dev, ATA_PRIMARY_IRQ(pdev),
 					      pi->port_ops->irq_handler,
 					      IRQF_SHARED, DRV_NAME, host);
 			if (rc)
 				goto err_out;
+
+			ata_port_desc(host->ports[0], "irq %d",
+				      ATA_PRIMARY_IRQ(pdev));
 		}
 
 		if (!ata_port_is_dummy(host->ports[1])) {
-			host->irq2 = ATA_SECONDARY_IRQ(pdev);
-			rc = devm_request_irq(dev, host->irq2,
+			rc = devm_request_irq(dev, ATA_SECONDARY_IRQ(pdev),
 					      pi->port_ops->irq_handler,
 					      IRQF_SHARED, DRV_NAME, host);
 			if (rc)
 				goto err_out;
+
+			ata_port_desc(host->ports[1], "irq %d",
+				      ATA_SECONDARY_IRQ(pdev));
 		}
 	}
 
@@ -909,7 +882,7 @@ unsigned long ata_pci_default_filter(struct ata_device *adev, unsigned long xfer
 	/* Filter out DMA modes if the device has been configured by
 	   the BIOS as PIO only */
 
-	if (adev->ap->ioaddr.bmdma_addr == 0)
+	if (adev->link->ap->ioaddr.bmdma_addr == 0)
 		xfer_mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA);
 	return xfer_mask;
 }

drivers/ata/libata.h

@@ -29,6 +29,7 @@
 #define __LIBATA_H__
 
 #define DRV_NAME	"libata"
+#define DRV_VERSION	"3.00"	/* must be exactly four chars */
 
 struct ata_scsi_args {
 	struct ata_device	*dev;
@@ -56,6 +57,7 @@ extern unsigned int ata_print_id;
 extern struct workqueue_struct *ata_aux_wq;
 extern int atapi_enabled;
 extern int atapi_dmadir;
+extern int atapi_passthru16;
 extern int libata_fua;
 extern int libata_noacpi;
 extern struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev);
@@ -67,21 +69,23 @@ extern void ata_dev_disable(struct ata_device *dev);
 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,
-				  int dma_dir, void *buf, unsigned int buflen);
+				  int dma_dir, void *buf, unsigned int buflen,
+				  unsigned long timeout);
 extern unsigned ata_exec_internal_sg(struct ata_device *dev,
 				     struct ata_taskfile *tf, const u8 *cdb,
 				     int dma_dir, struct scatterlist *sg,
-				     unsigned int n_elem);
+				     unsigned int n_elem, unsigned long timeout);
 extern unsigned int ata_do_simple_cmd(struct ata_device *dev, u8 cmd);
 extern int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class,
 			   unsigned int flags, u16 *id);
 extern int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags);
-extern int ata_dev_revalidate(struct ata_device *dev, unsigned int readid_flags);
+extern int ata_dev_revalidate(struct ata_device *dev, unsigned int new_class,
+			      unsigned int readid_flags);
 extern int ata_dev_configure(struct ata_device *dev);
-extern int sata_down_spd_limit(struct ata_port *ap);
-extern int sata_set_spd_needed(struct ata_port *ap);
+extern int sata_down_spd_limit(struct ata_link *link);
+extern int sata_set_spd_needed(struct ata_link *link);
 extern int ata_down_xfermask_limit(struct ata_device *dev, unsigned int sel);
-extern int ata_set_mode(struct ata_port *ap, struct ata_device **r_failed_dev);
+extern int ata_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
 extern void ata_sg_clean(struct ata_queued_cmd *qc);
 extern void ata_qc_free(struct ata_queued_cmd *qc);
 extern void ata_qc_issue(struct ata_queued_cmd *qc);
@@ -92,17 +96,21 @@ extern void ata_dev_select(struct ata_port *ap, unsigned int device,
 extern void swap_buf_le16(u16 *buf, unsigned int buf_words);
 extern int ata_flush_cache(struct ata_device *dev);
 extern void ata_dev_init(struct ata_device *dev);
+extern void ata_link_init(struct ata_port *ap, struct ata_link *link, int pmp);
+extern int sata_link_init_spd(struct ata_link *link);
 extern int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg);
 extern int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg);
 extern struct ata_port *ata_port_alloc(struct ata_host *host);
 
 /* libata-acpi.c */
 #ifdef CONFIG_ATA_ACPI
+extern void ata_acpi_associate_sata_port(struct ata_port *ap);
 extern void ata_acpi_associate(struct ata_host *host);
 extern int ata_acpi_on_suspend(struct ata_port *ap);
 extern void ata_acpi_on_resume(struct ata_port *ap);
 extern int ata_acpi_on_devcfg(struct ata_device *adev);
 #else
+static inline void ata_acpi_associate_sata_port(struct ata_port *ap) { }
 static inline void ata_acpi_associate(struct ata_host *host) { }
 static inline int ata_acpi_on_suspend(struct ata_port *ap) { return 0; }
 static inline void ata_acpi_on_resume(struct ata_port *ap) { }
@@ -114,6 +122,7 @@ extern int ata_scsi_add_hosts(struct ata_host *host,
 			      struct scsi_host_template *sht);
 extern void ata_scsi_scan_host(struct ata_port *ap, int sync);
 extern int ata_scsi_offline_dev(struct ata_device *dev);
+extern void ata_scsi_media_change_notify(struct ata_device *dev);
 extern void ata_scsi_hotplug(struct work_struct *work);
 extern unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf,
 			       unsigned int buflen);
@@ -147,12 +156,32 @@ extern void ata_schedule_scsi_eh(struct Scsi_Host *shost);
 extern void ata_scsi_dev_rescan(struct work_struct *work);
 extern int ata_bus_probe(struct ata_port *ap);
 
+/* libata-pmp.c */
+extern int sata_pmp_scr_read(struct ata_link *link, int reg, u32 *val);
+extern int sata_pmp_scr_write(struct ata_link *link, int reg, u32 val);
+extern int sata_pmp_attach(struct ata_device *dev);
+
 /* libata-eh.c */
 extern enum scsi_eh_timer_return ata_scsi_timed_out(struct scsi_cmnd *cmd);
 extern void ata_scsi_error(struct Scsi_Host *host);
 extern void ata_port_wait_eh(struct ata_port *ap);
 extern void ata_eh_fastdrain_timerfn(unsigned long arg);
 extern void ata_qc_schedule_eh(struct ata_queued_cmd *qc);
+extern void ata_eh_detach_dev(struct ata_device *dev);
+extern void ata_eh_about_to_do(struct ata_link *link, struct ata_device *dev,
+			       unsigned int action);
+extern void ata_eh_done(struct ata_link *link, struct ata_device *dev,
+			unsigned int action);
+extern void ata_eh_autopsy(struct ata_port *ap);
+extern void ata_eh_report(struct ata_port *ap);
+extern int ata_eh_reset(struct ata_link *link, int classify,
+			ata_prereset_fn_t prereset, ata_reset_fn_t softreset,
+			ata_reset_fn_t hardreset, ata_postreset_fn_t postreset);
+extern int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
+			  ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
+			  ata_postreset_fn_t postreset,
+			  struct ata_link **r_failed_disk);
+extern void ata_eh_finish(struct ata_port *ap);
 
 /* libata-sff.c */
 extern u8 ata_irq_on(struct ata_port *ap);

drivers/ata/pata_acpi.c

+/*
+ *	ACPI PATA driver
+ *
+ *	(c) 2007 Red Hat  <alan@redhat.com>
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/blkdev.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <scsi/scsi_host.h>
+#include <acpi/acpi_bus.h>
+#include <acpi/acnames.h>
+#include <acpi/acnamesp.h>
+#include <acpi/acparser.h>
+#include <acpi/acexcep.h>
+#include <acpi/acmacros.h>
+#include <acpi/actypes.h>
+
+#include <linux/libata.h>
+#include <linux/ata.h>
+
+#define DRV_NAME	"pata_acpi"
+#define DRV_VERSION	"0.2.3"
+
+struct pata_acpi {
+	struct ata_acpi_gtm gtm;
+	void *last;
+	unsigned long mask[2];
+};
+
+/**
+ *	pacpi_pre_reset	-	check for 40/80 pin
+ *	@ap: Port
+ *	@deadline: deadline jiffies for the operation
+ *
+ *	Perform the PATA port setup we need.
+ */
+
+static int pacpi_pre_reset(struct ata_link *link, unsigned long deadline)
+{
+	struct ata_port *ap = link->ap;
+	struct pata_acpi *acpi = ap->private_data;
+	if (ap->acpi_handle == NULL || ata_acpi_gtm(ap, &acpi->gtm) < 0)
+		return -ENODEV;
+
+	return ata_std_prereset(link, deadline);
+}
+
+/**
+ *	pacpi_cable_detect	-	cable type detection
+ *	@ap: port to detect
+ *
+ *	Perform device specific cable detection
+ */
+
+static int pacpi_cable_detect(struct ata_port *ap)
+{
+	struct pata_acpi *acpi = ap->private_data;
+
+	if ((acpi->mask[0] | acpi->mask[1]) & (0xF8 << ATA_SHIFT_UDMA))
+		return ATA_CBL_PATA80;
+	else
+		return ATA_CBL_PATA40;
+}
+
+/**
+ *	pacpi_error_handler - Setup and error handler
+ *	@ap: Port to handle
+ *
+ *	LOCKING:
+ *	None (inherited from caller).
+ */
+
+static void pacpi_error_handler(struct ata_port *ap)
+{
+	return ata_bmdma_drive_eh(ap, pacpi_pre_reset, ata_std_softreset,
+				  NULL, ata_std_postreset);
+}
+
+/* Welcome to ACPI, bring a bucket */
+static const unsigned int pio_cycle[7] = {
+	600, 383, 240, 180, 120, 100, 80
+};
+static const unsigned int mwdma_cycle[5] = {
+	480, 150, 120, 100, 80
+};
+static const unsigned int udma_cycle[7] = {
+	120, 80, 60, 45, 30, 20, 15
+};
+
+/**
+ *	pacpi_discover_modes	-	filter non ACPI modes
+ *	@adev: ATA device
+ *	@mask: proposed modes
+ *
+ *	Try the modes available and see which ones the ACPI method will
+ *	set up sensibly. From this we get a mask of ACPI modes we can use
+ */
+
+static unsigned long pacpi_discover_modes(struct ata_port *ap, struct ata_device *adev)
+{
+	int unit = adev->devno;
+	struct pata_acpi *acpi = ap->private_data;
+	int i;
+	u32 t;
+	unsigned long mask = (0x7f << ATA_SHIFT_UDMA) | (0x7 << ATA_SHIFT_MWDMA) | (0x1F << ATA_SHIFT_PIO);
+
+	struct ata_acpi_gtm probe;
+
+	probe = acpi->gtm;
+
+	/* We always use the 0 slot for crap hardware */
+	if (!(probe.flags & 0x10))
+		unit = 0;
+
+	ata_acpi_gtm(ap, &probe);
+
+	/* Start by scanning for PIO modes */
+	for (i = 0; i < 7; i++) {
+		t = probe.drive[unit].pio;
+		if (t <= pio_cycle[i]) {
+			mask |= (2 << (ATA_SHIFT_PIO + i)) - 1;
+			break;
+		}
+	}
+
+	/* See if we have MWDMA or UDMA data. We don't bother with MWDMA
+	   if UDMA is availabe as this means the BIOS set UDMA and our
+	   error changedown if it works is UDMA to PIO anyway */
+	if (probe.flags & (1 << (2 * unit))) {
+		/* MWDMA */
+		for (i = 0; i < 5; i++) {
+			t = probe.drive[unit].dma;
+			if (t <= mwdma_cycle[i]) {
+				mask |= (2 << (ATA_SHIFT_MWDMA + i)) - 1;
+				break;
+			}
+		}
+	} else {
+		/* UDMA */
+		for (i = 0; i < 7; i++) {
+			t = probe.drive[unit].dma;
+			if (t <= udma_cycle[i]) {
+				mask |= (2 << (ATA_SHIFT_UDMA + i)) - 1;
+				break;
+			}
+		}
+	}
+	if (mask & (0xF8 << ATA_SHIFT_UDMA))
+		ap->cbl = ATA_CBL_PATA80;
+	return mask;
+}
+
+/**
+ *	pacpi_mode_filter	-	mode filter for ACPI
+ *	@adev: device
+ *	@mask: mask of valid modes
+ *
+ *	Filter the valid mode list according to our own specific rules, in
+ *	this case the list of discovered valid modes obtained by ACPI probing
+ */
+
+static unsigned long pacpi_mode_filter(struct ata_device *adev, unsigned long mask)
+{
+	struct pata_acpi *acpi = adev->link->ap->private_data;
+	return ata_pci_default_filter(adev, mask & acpi->mask[adev->devno]);
+}
+
+/**
+ *	pacpi_set_piomode	-	set initial PIO mode data
+ *	@ap: ATA interface
+ *	@adev: ATA device
+ */
+
+static void pacpi_set_piomode(struct ata_port *ap, struct ata_device *adev)
+{
+	int unit = adev->devno;
+	struct pata_acpi *acpi = ap->private_data;
+
+	if(!(acpi->gtm.flags & 0x10))
+		unit = 0;
+
+	/* Now stuff the nS values into the structure */
+	acpi->gtm.drive[unit].pio = pio_cycle[adev->pio_mode - XFER_PIO_0];
+	ata_acpi_stm(ap, &acpi->gtm);
+	/* See what mode we actually got */
+	ata_acpi_gtm(ap, &acpi->gtm);
+}
+
+/**
+ *	pacpi_set_dmamode	-	set initial DMA mode data
+ *	@ap: ATA interface
+ *	@adev: ATA device
+ */
+
+static void pacpi_set_dmamode(struct ata_port *ap, struct ata_device *adev)
+{
+	int unit = adev->devno;
+	struct pata_acpi *acpi = ap->private_data;
+
+	if(!(acpi->gtm.flags & 0x10))
+		unit = 0;
+
+	/* Now stuff the nS values into the structure */
+	if (adev->dma_mode >= XFER_UDMA_0) {
+		acpi->gtm.drive[unit].dma = udma_cycle[adev->dma_mode - XFER_UDMA_0];
+		acpi->gtm.flags |= (1 << (2 * unit));
+	} else {
+		acpi->gtm.drive[unit].dma = mwdma_cycle[adev->dma_mode - XFER_MW_DMA_0];
+		acpi->gtm.flags &= ~(1 << (2 * unit));
+	}
+	ata_acpi_stm(ap, &acpi->gtm);
+	/* See what mode we actually got */
+	ata_acpi_gtm(ap, &acpi->gtm);
+}
+
+/**
+ *	pacpi_qc_issue_prot	-	command issue
+ *	@qc: command pending
+ *
+ *	Called when the libata layer is about to issue a command. We wrap
+ *	this interface so that we can load the correct ATA timings if
+ *	neccessary.
+ */
+
+static unsigned int pacpi_qc_issue_prot(struct ata_queued_cmd *qc)
+{
+	struct ata_port *ap = qc->ap;
+	struct ata_device *adev = qc->dev;
+	struct pata_acpi *acpi = ap->private_data;
+
+	if (acpi->gtm.flags & 0x10)
+		return ata_qc_issue_prot(qc);
+
+	if (adev != acpi->last) {
+		pacpi_set_piomode(ap, adev);
+		if (adev->dma_mode)
+			pacpi_set_dmamode(ap, adev);
+		acpi->last = adev;
+	}
+	return ata_qc_issue_prot(qc);
+}
+
+/**
+ *	pacpi_port_start	-	port setup
+ *	@ap: ATA port being set up
+ *
+ *	Use the port_start hook to maintain private control structures
+ */
+
+static int pacpi_port_start(struct ata_port *ap)
+{
+	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
+	struct pata_acpi *acpi;
+
+	int ret;
+
+	if (ap->acpi_handle == NULL)
+		return -ENODEV;
+
+	acpi = ap->private_data = devm_kzalloc(&pdev->dev, sizeof(struct pata_acpi), GFP_KERNEL);
+	if (ap->private_data == NULL)
+		return -ENOMEM;
+	acpi->mask[0] = pacpi_discover_modes(ap, &ap->link.device[0]);
+	acpi->mask[1] = pacpi_discover_modes(ap, &ap->link.device[1]);
+	ret = ata_sff_port_start(ap);
+	if (ret < 0)
+		return ret;
+
+	return ret;
+}
+
+static struct scsi_host_template pacpi_sht = {
+	.module			= THIS_MODULE,
+	.name			= DRV_NAME,
+	.ioctl			= ata_scsi_ioctl,
+	.queuecommand		= ata_scsi_queuecmd,
+	.can_queue		= ATA_DEF_QUEUE,
+	.this_id		= ATA_SHT_THIS_ID,
+	.sg_tablesize		= LIBATA_MAX_PRD,
+	.cmd_per_lun		= ATA_SHT_CMD_PER_LUN,
+	.emulated		= ATA_SHT_EMULATED,
+	.use_clustering		= ATA_SHT_USE_CLUSTERING,
+	.proc_name		= DRV_NAME,
+	.dma_boundary		= ATA_DMA_BOUNDARY,
+	.slave_configure	= ata_scsi_slave_config,
+	.slave_destroy		= ata_scsi_slave_destroy,
+	/* Use standard CHS mapping rules */
+	.bios_param		= ata_std_bios_param,
+};
+
+static const struct ata_port_operations pacpi_ops = {
+	.set_piomode		= pacpi_set_piomode,
+	.set_dmamode		= pacpi_set_dmamode,
+	.mode_filter		= pacpi_mode_filter,
+
+	/* Task file is PCI ATA format, use helpers */
+	.tf_load		= ata_tf_load,
+	.tf_read		= ata_tf_read,
+	.check_status		= ata_check_status,
+	.exec_command		= ata_exec_command,
+	.dev_select		= ata_std_dev_select,
+
+	.freeze			= ata_bmdma_freeze,
+	.thaw			= ata_bmdma_thaw,
+	.error_handler		= pacpi_error_handler,
+	.post_internal_cmd	= ata_bmdma_post_internal_cmd,
+	.cable_detect		= pacpi_cable_detect,
+
+	/* BMDMA handling is PCI ATA format, use helpers */
+	.bmdma_setup		= ata_bmdma_setup,
+	.bmdma_start		= ata_bmdma_start,
+	.bmdma_stop		= ata_bmdma_stop,
+	.bmdma_status		= ata_bmdma_status,
+	.qc_prep		= ata_qc_prep,
+	.qc_issue		= pacpi_qc_issue_prot,
+	.data_xfer		= ata_data_xfer,
+
+	/* Timeout handling */
+	.irq_handler		= ata_interrupt,
+	.irq_clear		= ata_bmdma_irq_clear,
+	.irq_on			= ata_irq_on,
+
+	/* Generic PATA PCI ATA helpers */
+	.port_start		= pacpi_port_start,
+};
+
+
+/**
+ *	pacpi_init_one - Register ACPI ATA PCI device with kernel services
+ *	@pdev: PCI device to register
+ *	@ent: Entry in pacpi_pci_tbl matching with @pdev
+ *
+ *	Called from kernel PCI layer.
+ *
+ *	LOCKING:
+ *	Inherited from PCI layer (may sleep).
+ *
+ *	RETURNS:
+ *	Zero on success, or -ERRNO value.
+ */
+
+static int pacpi_init_one (struct pci_dev *pdev, const struct pci_device_id *id)
+{
+	static const struct ata_port_info info = {
+		.sht		= &pacpi_sht,
+		.flags		= ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
+
+		.pio_mask	= 0x1f,
+		.mwdma_mask	= 0x07,
+		.udma_mask 	= 0x7f,
+
+		.port_ops	= &pacpi_ops,
+	};
+	const struct ata_port_info *ppi[] = { &info, NULL };
+	return ata_pci_init_one(pdev, ppi);
+}
+
+static const struct pci_device_id pacpi_pci_tbl[] = {
+	{ PCI_ANY_ID,		PCI_ANY_ID,			   PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE << 8, 0xFFFFFF00UL, 1},
+	{ }	/* terminate list */
+};
+
+static struct pci_driver pacpi_pci_driver = {
+	.name			= DRV_NAME,
+	.id_table		= pacpi_pci_tbl,
+	.probe			= pacpi_init_one,
+	.remove			= ata_pci_remove_one,
+	.suspend		= ata_pci_device_suspend,
+	.resume			= ata_pci_device_resume,
+};
+
+static int __init pacpi_init(void)
+{
+	return pci_register_driver(&pacpi_pci_driver);
+}
+
+static void __exit pacpi_exit(void)
+{
+	pci_unregister_driver(&pacpi_pci_driver);
+}
+
+module_init(pacpi_init);
+module_exit(pacpi_exit);
+
+MODULE_AUTHOR("Alan Cox");
+MODULE_DESCRIPTION("SCSI low-level driver for ATA in ACPI mode");
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(pci, pacpi_pci_tbl);
+MODULE_VERSION(DRV_VERSION);
+

drivers/ata/pata_ali.c

@@ -305,7 +305,6 @@ static struct scsi_host_template ali_sht = {
  */
 
 static struct ata_port_operations ali_early_port_ops = {
-	.port_disable	= ata_port_disable,
 	.set_piomode	= ali_set_piomode,
 	.tf_load	= ata_tf_load,
 	.tf_read	= ata_tf_read,
@@ -327,9 +326,8 @@ static struct ata_port_operations ali_early_port_ops = {
 	.irq_handler	= ata_interrupt,
 	.irq_clear	= ata_bmdma_irq_clear,
 	.irq_on		= ata_irq_on,
-	.irq_ack	= ata_irq_ack,
 
-	.port_start	= ata_port_start,
+	.port_start	= ata_sff_port_start,
 };
 
 /*
@@ -337,8 +335,6 @@ static struct ata_port_operations ali_early_port_ops = {
  *	detect
  */
 static struct ata_port_operations ali_20_port_ops = {
-	.port_disable	= ata_port_disable,
-
 	.set_piomode	= ali_set_piomode,
 	.set_dmamode	= ali_set_dmamode,
 	.mode_filter	= ali_20_filter,
@@ -369,16 +365,14 @@ static struct ata_port_operations ali_20_port_ops = {
 	.irq_handler	= ata_interrupt,
 	.irq_clear	= ata_bmdma_irq_clear,
 	.irq_on		= ata_irq_on,
-	.irq_ack	= ata_irq_ack,
 
-	.port_start	= ata_port_start,
+	.port_start	= ata_sff_port_start,
 };
 
 /*
  *	Port operations for DMA capable ALi with cable detect
  */
 static struct ata_port_operations ali_c2_port_ops = {
-	.port_disable	= ata_port_disable,
 	.set_piomode	= ali_set_piomode,
 	.set_dmamode	= ali_set_dmamode,
 	.mode_filter	= ata_pci_default_filter,
@@ -408,16 +402,14 @@ static struct ata_port_operations ali_c2_port_ops = {
 	.irq_handler	= ata_interrupt,
 	.irq_clear	= ata_bmdma_irq_clear,
 	.irq_on		= ata_irq_on,
-	.irq_ack	= ata_irq_ack,
 
-	.port_start	= ata_port_start,
+	.port_start	= ata_sff_port_start,
 };
 
 /*
  *	Port operations for DMA capable ALi with cable detect and LBA48
  */
 static struct ata_port_operations ali_c5_port_ops = {
-	.port_disable	= ata_port_disable,
 	.set_piomode	= ali_set_piomode,
 	.set_dmamode	= ali_set_dmamode,
 	.mode_filter	= ata_pci_default_filter,
@@ -446,9 +438,8 @@ static struct ata_port_operations ali_c5_port_ops = {
 	.irq_handler	= ata_interrupt,
 	.irq_clear	= ata_bmdma_irq_clear,
 	.irq_on		= ata_irq_on,
-	.irq_ack	= ata_irq_ack,
 
-	.port_start	= ata_port_start,
+	.port_start	= ata_sff_port_start,
 };
 
 

drivers/ata/pata_artop.c

@@ -40,8 +40,9 @@
 
 static int clock = 0;
 
-static int artop6210_pre_reset(struct ata_port *ap, unsigned long deadline)
+static int artop6210_pre_reset(struct ata_link *link, unsigned long deadline)
 {
+	struct ata_port *ap = link->ap;
 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 	const struct pci_bits artop_enable_bits[] = {
 		{ 0x4AU, 1U, 0x02UL, 0x02UL },	/* port 0 */
@@ -51,7 +52,7 @@ static int artop6210_pre_reset(struct ata_port *ap, unsigned long deadline)
 	if (!pci_test_config_bits(pdev, &artop_enable_bits[ap->port_no]))
 		return -ENOENT;
 
-	return ata_std_prereset(ap, deadline);
+	return ata_std_prereset(link, deadline);
 }
 
 /**
@@ -71,27 +72,28 @@ static void artop6210_error_handler(struct ata_port *ap)
 
 /**
  *	artop6260_pre_reset	-	check for 40/80 pin
- *	@ap: Port
+ *	@link: link
  *	@deadline: deadline jiffies for the operation
  *
  *	The ARTOP hardware reports the cable detect bits in register 0x49.
  *	Nothing complicated needed here.
  */
 
-static int artop6260_pre_reset(struct ata_port *ap, unsigned long deadline)
+static int artop6260_pre_reset(struct ata_link *link, unsigned long deadline)
 {
 	static const struct pci_bits artop_enable_bits[] = {
 		{ 0x4AU, 1U, 0x02UL, 0x02UL },	/* port 0 */
 		{ 0x4AU, 1U, 0x04UL, 0x04UL },	/* port 1 */
 	};
 
+	struct ata_port *ap = link->ap;
 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 
 	/* Odd numbered device ids are the units with enable bits (the -R cards) */
 	if (pdev->device % 1 && !pci_test_config_bits(pdev, &artop_enable_bits[ap->port_no]))
 		return -ENOENT;
 
-	return ata_std_prereset(ap, deadline);
+	return ata_std_prereset(link, deadline);
 }
 
 /**
@@ -330,7 +332,6 @@ static struct scsi_host_template artop_sht = {
 };
 
 static const struct ata_port_operations artop6210_ops = {
-	.port_disable		= ata_port_disable,
 	.set_piomode		= artop6210_set_piomode,
 	.set_dmamode		= artop6210_set_dmamode,
 	.mode_filter		= ata_pci_default_filter,
@@ -359,13 +360,11 @@ static const struct ata_port_operations artop6210_ops = {
 	.irq_handler		= ata_interrupt,
 	.irq_clear		= ata_bmdma_irq_clear,
 	.irq_on			= ata_irq_on,
-	.irq_ack		= ata_irq_ack,
 
-	.port_start		= ata_port_start,
+	.port_start		= ata_sff_port_start,
 };
 
 static const struct ata_port_operations artop6260_ops = {
-	.port_disable		= ata_port_disable,
 	.set_piomode		= artop6260_set_piomode,
 	.set_dmamode		= artop6260_set_dmamode,
 
@@ -392,9 +391,8 @@ static const struct ata_port_operations artop6260_ops = {
 	.irq_handler		= ata_interrupt,
 	.irq_clear		= ata_bmdma_irq_clear,
 	.irq_on			= ata_irq_on,
-	.irq_ack		= ata_irq_ack,
 
-	.port_start		= ata_port_start,
+	.port_start		= ata_sff_port_start,
 };