Commit 2ba14a01 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

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: (67 commits)
  fix drivers/ata/sata_fsl.c double-decl
  [libata] Prefer SCSI_SENSE_BUFFERSIZE to sizeof()
  pata_legacy: Merge winbond support
  ata_generic: Cenatek support
  pata_winbond: error return
  pata_serverworks: Fix cable types and cosmetics
  pata_mpc52xx: remove un-needed assignment
  libata: fix off-by-one in error categorization
  ahci: factor out AHCI enabling and enable AHCI before reading CAP
  ata_piix: implement SIDPR SCR access
  ata_piix: convert to prepare - activate initialization
  libata: factor out ata_pci_activate_sff_host() from ata_pci_one()
  [libata] Prefer SCSI_SENSE_BUFFERSIZE to sizeof()
  pata_legacy: resychronize with upstream changes and resubmit
  [libata] pata_legacy: typo fix
  [libata] pata_winbond: update for new ->data_xfer hook
  pata_pcmcia: convert to new data_xfer prototype
  libata annotations and fixes
  libata: use dev_driver_string() instead of "libata" in libata-sff.c
  ata_piix: kill unused constants and flags
  ...
parents 99f1c97d a984f58d

drivers/ata/Kconfig

+9 −0
Original line number Diff line number Diff line
@@ -459,6 +459,15 @@ config PATA_NETCELL 


	  If unsure, say N.



config PATA_NINJA32

	tristate "Ninja32/Delkin Cardbus ATA support (Experimental)"

	depends on PCI && EXPERIMENTAL

	help

	  This option enables support for the Ninja32, Delkin and

	  possibly other brands of Cardbus ATA adapter



	  If unsure, say N.



config PATA_NS87410

	tristate "Nat Semi NS87410 PATA support (Experimental)"

	depends on PCI && EXPERIMENTAL

drivers/ata/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -41,6 +41,7 @@ obj-$(CONFIG_PATA_IT821X) += pata_it821x.o 
obj-$(CONFIG_PATA_IT8213)	+= pata_it8213.o

obj-$(CONFIG_PATA_JMICRON)	+= pata_jmicron.o

obj-$(CONFIG_PATA_NETCELL)	+= pata_netcell.o

obj-$(CONFIG_PATA_NINJA32)	+= pata_ninja32.o

obj-$(CONFIG_PATA_NS87410)	+= pata_ns87410.o

obj-$(CONFIG_PATA_NS87415)	+= pata_ns87415.o

obj-$(CONFIG_PATA_OPTI)		+= pata_opti.o

drivers/ata/ahci.c

+42 −30
Original line number Diff line number Diff line
@@ -198,18 +198,18 @@ enum { 
};



struct ahci_cmd_hdr {

	u32			opts;

	u32			status;

	u32			tbl_addr;

	u32			tbl_addr_hi;

	u32			reserved[4];

	__le32			opts;

	__le32			status;

	__le32			tbl_addr;

	__le32			tbl_addr_hi;

	__le32			reserved[4];

};



struct ahci_sg {

	u32			addr;

	u32			addr_hi;

	u32			reserved;

	u32			flags_size;

	__le32			addr;

	__le32			addr_hi;

	__le32			reserved;

	__le32			flags_size;

};



struct ahci_host_priv {
@@ -597,6 +597,20 @@ static inline void __iomem *ahci_port_base(struct ata_port *ap) 
	return __ahci_port_base(ap->host, ap->port_no);

}



static void ahci_enable_ahci(void __iomem *mmio)

{

	u32 tmp;



	/* turn on AHCI_EN */

	tmp = readl(mmio + HOST_CTL);

	if (!(tmp & HOST_AHCI_EN)) {

		tmp |= HOST_AHCI_EN;

		writel(tmp, mmio + HOST_CTL);

		tmp = readl(mmio + HOST_CTL);	/* flush && sanity check */

		WARN_ON(!(tmp & HOST_AHCI_EN));

	}

}



/**

 *	ahci_save_initial_config - Save and fixup initial config values

 *	@pdev: target PCI device
@@ -619,6 +633,9 @@ static void ahci_save_initial_config(struct pci_dev *pdev, 
	u32 cap, port_map;

	int i;



	/* make sure AHCI mode is enabled before accessing CAP */

	ahci_enable_ahci(mmio);



	/* Values prefixed with saved_ are written back to host after

	 * reset.  Values without are used for driver operation.

	 */
@@ -1036,19 +1053,17 @@ static int ahci_deinit_port(struct ata_port *ap, const char **emsg) 
static int ahci_reset_controller(struct ata_host *host)

{

	struct pci_dev *pdev = to_pci_dev(host->dev);

	struct ahci_host_priv *hpriv = host->private_data;

	void __iomem *mmio = host->iomap[AHCI_PCI_BAR];

	u32 tmp;



	/* we must be in AHCI mode, before using anything

	 * AHCI-specific, such as HOST_RESET.

	 */

	tmp = readl(mmio + HOST_CTL);

	if (!(tmp & HOST_AHCI_EN)) {

		tmp |= HOST_AHCI_EN;

		writel(tmp, mmio + HOST_CTL);

	}

	ahci_enable_ahci(mmio);



	/* global controller reset */

	tmp = readl(mmio + HOST_CTL);

	if ((tmp & HOST_RESET) == 0) {

		writel(tmp | HOST_RESET, mmio + HOST_CTL);

		readl(mmio + HOST_CTL); /* flush */
@@ -1067,8 +1082,7 @@ static int ahci_reset_controller(struct ata_host *host) 
	}



	/* turn on AHCI mode */

	writel(HOST_AHCI_EN, mmio + HOST_CTL);

	(void) readl(mmio + HOST_CTL);	/* flush */

	ahci_enable_ahci(mmio);



	/* some registers might be cleared on reset.  restore initial values */

	ahci_restore_initial_config(host);
@@ -1078,9 +1092,11 @@ static int ahci_reset_controller(struct ata_host *host) 


		/* configure PCS */

		pci_read_config_word(pdev, 0x92, &tmp16);

		tmp16 |= 0xf;

		if ((tmp16 & hpriv->port_map) != hpriv->port_map) {

			tmp16 |= hpriv->port_map;

			pci_write_config_word(pdev, 0x92, tmp16);

		}

	}



	return 0;

}
@@ -1480,35 +1496,31 @@ static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf) 
static unsigned int ahci_fill_sg(struct ata_queued_cmd *qc, void *cmd_tbl)

{

	struct scatterlist *sg;

	struct ahci_sg *ahci_sg;

	unsigned int n_sg = 0;

	struct ahci_sg *ahci_sg = cmd_tbl + AHCI_CMD_TBL_HDR_SZ;

	unsigned int si;



	VPRINTK("ENTER\n");



	/*

	 * Next, the S/G list.

	 */

	ahci_sg = cmd_tbl + AHCI_CMD_TBL_HDR_SZ;

	ata_for_each_sg(sg, qc) {

	for_each_sg(qc->sg, sg, qc->n_elem, si) {

		dma_addr_t addr = sg_dma_address(sg);

		u32 sg_len = sg_dma_len(sg);



		ahci_sg->addr = cpu_to_le32(addr & 0xffffffff);

		ahci_sg->addr_hi = cpu_to_le32((addr >> 16) >> 16);

		ahci_sg->flags_size = cpu_to_le32(sg_len - 1);



		ahci_sg++;

		n_sg++;

		ahci_sg[si].addr = cpu_to_le32(addr & 0xffffffff);

		ahci_sg[si].addr_hi = cpu_to_le32((addr >> 16) >> 16);

		ahci_sg[si].flags_size = cpu_to_le32(sg_len - 1);

	}



	return n_sg;

	return si;

}



static void ahci_qc_prep(struct ata_queued_cmd *qc)

{

	struct ata_port *ap = qc->ap;

	struct ahci_port_priv *pp = ap->private_data;

	int is_atapi = is_atapi_taskfile(&qc->tf);

	int is_atapi = ata_is_atapi(qc->tf.protocol);

	void *cmd_tbl;

	u32 opts;

	const u32 cmd_fis_len = 5; /* five dwords */

drivers/ata/ata_generic.c

+36 −15
Original line number Diff line number Diff line
@@ -26,7 +26,7 @@ 
#include <linux/libata.h>



#define DRV_NAME "ata_generic"

#define DRV_VERSION "0.2.13"

#define DRV_VERSION "0.2.15"



/*

 *	A generic parallel ATA driver using libata
@@ -48,20 +48,41 @@ static int generic_set_mode(struct ata_link *link, struct ata_device **unused) 
	struct ata_port *ap = link->ap;

	int dma_enabled = 0;

	struct ata_device *dev;

	struct pci_dev *pdev = to_pci_dev(ap->host->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);



	if (pdev->vendor == PCI_VENDOR_ID_CENATEK)

		dma_enabled = 0xFF;



	ata_link_for_each_dev(dev, link) {

		if (ata_dev_enabled(dev)) {

		if (!ata_dev_enabled(dev))

			continue;



		/* 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 + dev->devno))) {

				ata_id_to_dma_mode(dev, XFER_MW_DMA_0);

			unsigned int xfer_mask = ata_id_xfermask(dev->id);

			const char *name;



			if (xfer_mask & (ATA_MASK_MWDMA | ATA_MASK_UDMA))

				name = ata_mode_string(xfer_mask);

			else {

				/* SWDMA perhaps? */

				name = "DMA";

				xfer_mask |= ata_xfer_mode2mask(XFER_MW_DMA_0);

			}



			ata_dev_printk(dev, KERN_INFO, "configured for %s\n",

				       name);



			dev->xfer_mode = ata_xfer_mask2mode(xfer_mask);

			dev->xfer_shift = ata_xfer_mode2shift(dev->xfer_mode);

			dev->flags &= ~ATA_DFLAG_PIO;

		} else {

			ata_dev_printk(dev, KERN_INFO, "configured for PIO\n");
@@ -70,7 +91,6 @@ static int generic_set_mode(struct ata_link *link, struct ata_device **unused) 
			dev->flags |= ATA_DFLAG_PIO;

		}

	}

	}

	return 0;

}
@@ -185,6 +205,7 @@ static struct pci_device_id ata_generic[] = { 
	{ PCI_DEVICE(PCI_VENDOR_ID_HINT,   PCI_DEVICE_ID_HINT_VXPROII_IDE), },

	{ PCI_DEVICE(PCI_VENDOR_ID_VIA,    PCI_DEVICE_ID_VIA_82C561), },

	{ PCI_DEVICE(PCI_VENDOR_ID_OPTI,   PCI_DEVICE_ID_OPTI_82C558), },

	{ PCI_DEVICE(PCI_VENDOR_ID_CENATEK,PCI_DEVICE_ID_CENATEK_IDE), },

	{ PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO), },

	{ PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_1), },

	{ PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_2),  },

drivers/ata/ata_piix.c

+317 −76
Original line number Diff line number Diff line
@@ -101,25 +101,39 @@ enum { 
	ICH5_PMR		= 0x90, /* port mapping register */

	ICH5_PCS		= 0x92,	/* port control and status */

	PIIX_SCC		= 0x0A, /* sub-class code register */

	PIIX_SIDPR_BAR		= 5,

	PIIX_SIDPR_LEN		= 16,

	PIIX_SIDPR_IDX		= 0,

	PIIX_SIDPR_DATA		= 4,



	PIIX_FLAG_SCR		= (1 << 26), /* SCR available */

	PIIX_FLAG_AHCI		= (1 << 27), /* AHCI possible */

	PIIX_FLAG_CHECKINTR	= (1 << 28), /* make sure PCI INTx enabled */

	PIIX_FLAG_SIDPR		= (1 << 29), /* SATA idx/data pair regs */



	PIIX_PATA_FLAGS		= ATA_FLAG_SLAVE_POSS,

	PIIX_SATA_FLAGS		= ATA_FLAG_SATA | PIIX_FLAG_CHECKINTR,



	/* combined mode.  if set, PATA is channel 0.

	 * if clear, PATA is channel 1.

	 */

	PIIX_PORT_ENABLED	= (1 << 0),

	PIIX_PORT_PRESENT	= (1 << 4),



	PIIX_80C_PRI		= (1 << 5) | (1 << 4),

	PIIX_80C_SEC		= (1 << 7) | (1 << 6),



	/* constants for mapping table */

	P0			= 0,  /* port 0 */

	P1			= 1,  /* port 1 */

	P2			= 2,  /* port 2 */

	P3			= 3,  /* port 3 */

	IDE			= -1, /* IDE */

	NA			= -2, /* not avaliable */

	RV			= -3, /* reserved */



	PIIX_AHCI_DEVICE	= 6,



	/* host->flags bits */

	PIIX_HOST_BROKEN_SUSPEND = (1 << 24),

};



enum piix_controller_ids {

	/* controller IDs */

	piix_pata_mwdma		= 0,	/* PIIX3 MWDMA only */

	piix_pata_mwdma,	/* PIIX3 MWDMA only */

	piix_pata_33,		/* PIIX4 at 33Mhz */

	ich_pata_33,		/* ICH up to UDMA 33 only */

	ich_pata_66,		/* ICH up to 66 Mhz */
@@ -133,20 +147,6 @@ enum { 
	ich8m_apple_sata_ahci,	/* locks up on second port enable */

	tolapai_sata_ahci,

	piix_pata_vmw,			/* PIIX4 for VMware, spurious DMA_ERR */



	/* constants for mapping table */

	P0			= 0,  /* port 0 */

	P1			= 1,  /* port 1 */

	P2			= 2,  /* port 2 */

	P3			= 3,  /* port 3 */

	IDE			= -1, /* IDE */

	NA			= -2, /* not avaliable */

	RV			= -3, /* reserved */



	PIIX_AHCI_DEVICE	= 6,



	/* host->flags bits */

	PIIX_HOST_BROKEN_SUSPEND = (1 << 24),

};



struct piix_map_db {
@@ -157,6 +157,7 @@ struct piix_map_db { 


struct piix_host_priv {

	const int *map;

	void __iomem *sidpr;

};



static int piix_init_one(struct pci_dev *pdev,
@@ -167,6 +168,9 @@ static void piix_set_dmamode(struct ata_port *ap, struct ata_device *adev); 
static void ich_set_dmamode(struct ata_port *ap, struct ata_device *adev);

static int ich_pata_cable_detect(struct ata_port *ap);

static u8 piix_vmw_bmdma_status(struct ata_port *ap);

static int piix_sidpr_scr_read(struct ata_port *ap, unsigned int reg, u32 *val);

static int piix_sidpr_scr_write(struct ata_port *ap, unsigned int reg, u32 val);

static void piix_sidpr_error_handler(struct ata_port *ap);

#ifdef CONFIG_PM

static int piix_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);

static int piix_pci_device_resume(struct pci_dev *pdev);
@@ -321,7 +325,6 @@ static const struct ata_port_operations piix_pata_ops = { 
	.post_internal_cmd	= ata_bmdma_post_internal_cmd,

	.cable_detect		= ata_cable_40wire,



	.irq_handler		= ata_interrupt,

	.irq_clear		= ata_bmdma_irq_clear,

	.irq_on			= ata_irq_on,
@@ -353,7 +356,6 @@ static const struct ata_port_operations ich_pata_ops = { 
	.post_internal_cmd	= ata_bmdma_post_internal_cmd,

	.cable_detect		= ich_pata_cable_detect,



	.irq_handler		= ata_interrupt,

	.irq_clear		= ata_bmdma_irq_clear,

	.irq_on			= ata_irq_on,
@@ -380,7 +382,6 @@ static const struct ata_port_operations piix_sata_ops = { 
	.error_handler		= ata_bmdma_error_handler,

	.post_internal_cmd	= ata_bmdma_post_internal_cmd,



	.irq_handler		= ata_interrupt,

	.irq_clear		= ata_bmdma_irq_clear,

	.irq_on			= ata_irq_on,
@@ -419,6 +420,35 @@ static const struct ata_port_operations piix_vmw_ops = { 
	.port_start		= ata_port_start,

};



static const struct ata_port_operations piix_sidpr_sata_ops = {

	.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,



	.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		= ata_qc_issue_prot,

	.data_xfer		= ata_data_xfer,



	.scr_read		= piix_sidpr_scr_read,

	.scr_write		= piix_sidpr_scr_write,



	.freeze			= ata_bmdma_freeze,

	.thaw			= ata_bmdma_thaw,

	.error_handler		= piix_sidpr_error_handler,

	.post_internal_cmd	= ata_bmdma_post_internal_cmd,



	.irq_clear		= ata_bmdma_irq_clear,

	.irq_on			= ata_irq_on,



	.port_start		= ata_port_start,

};



static const struct piix_map_db ich5_map_db = {

	.mask = 0x7,

	.port_enable = 0x3,
@@ -526,7 +556,6 @@ static const struct piix_map_db *piix_map_db_table[] = { 
static struct ata_port_info piix_port_info[] = {

	[piix_pata_mwdma] = 	/* PIIX3 MWDMA only */

	{

		.sht		= &piix_sht,

		.flags		= PIIX_PATA_FLAGS,

		.pio_mask	= 0x1f,	/* pio0-4 */

		.mwdma_mask	= 0x06, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
@@ -535,7 +564,6 @@ static struct ata_port_info piix_port_info[] = { 


	[piix_pata_33] =	/* PIIX4 at 33MHz */

	{

		.sht		= &piix_sht,

		.flags		= PIIX_PATA_FLAGS,

		.pio_mask	= 0x1f,	/* pio0-4 */

		.mwdma_mask	= 0x06, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
@@ -545,7 +573,6 @@ static struct ata_port_info piix_port_info[] = { 


	[ich_pata_33] = 	/* ICH0 - ICH at 33Mhz*/

	{

		.sht		= &piix_sht,

		.flags		= PIIX_PATA_FLAGS,

		.pio_mask 	= 0x1f,	/* pio 0-4 */

		.mwdma_mask	= 0x06, /* Check: maybe 0x07  */
@@ -555,7 +582,6 @@ static struct ata_port_info piix_port_info[] = { 


	[ich_pata_66] = 	/* ICH controllers up to 66MHz */

	{

		.sht		= &piix_sht,

		.flags		= PIIX_PATA_FLAGS,

		.pio_mask 	= 0x1f,	/* pio 0-4 */

		.mwdma_mask	= 0x06, /* MWDMA0 is broken on chip */
@@ -565,7 +591,6 @@ static struct ata_port_info piix_port_info[] = { 


	[ich_pata_100] =

	{

		.sht		= &piix_sht,

		.flags		= PIIX_PATA_FLAGS | PIIX_FLAG_CHECKINTR,

		.pio_mask	= 0x1f,	/* pio0-4 */

		.mwdma_mask	= 0x06, /* mwdma1-2 */
@@ -575,7 +600,6 @@ static struct ata_port_info piix_port_info[] = { 


	[ich5_sata] =

	{

		.sht		= &piix_sht,

		.flags		= PIIX_SATA_FLAGS,

		.pio_mask	= 0x1f,	/* pio0-4 */

		.mwdma_mask	= 0x07, /* mwdma0-2 */
@@ -585,8 +609,7 @@ static struct ata_port_info piix_port_info[] = { 


	[ich6_sata] =

	{

		.sht		= &piix_sht,

		.flags		= PIIX_SATA_FLAGS | PIIX_FLAG_SCR,

		.flags		= PIIX_SATA_FLAGS,

		.pio_mask	= 0x1f,	/* pio0-4 */

		.mwdma_mask	= 0x07, /* mwdma0-2 */

		.udma_mask	= ATA_UDMA6,
@@ -595,9 +618,7 @@ static struct ata_port_info piix_port_info[] = { 


	[ich6_sata_ahci] =

	{

		.sht		= &piix_sht,

		.flags		= PIIX_SATA_FLAGS | PIIX_FLAG_SCR |

				  PIIX_FLAG_AHCI,

		.flags		= PIIX_SATA_FLAGS | PIIX_FLAG_AHCI,

		.pio_mask	= 0x1f,	/* pio0-4 */

		.mwdma_mask	= 0x07, /* mwdma0-2 */

		.udma_mask	= ATA_UDMA6,
@@ -606,9 +627,7 @@ static struct ata_port_info piix_port_info[] = { 


	[ich6m_sata_ahci] =

	{

		.sht		= &piix_sht,

		.flags		= PIIX_SATA_FLAGS | PIIX_FLAG_SCR |

				  PIIX_FLAG_AHCI,

		.flags		= PIIX_SATA_FLAGS | PIIX_FLAG_AHCI,

		.pio_mask	= 0x1f,	/* pio0-4 */

		.mwdma_mask	= 0x07, /* mwdma0-2 */

		.udma_mask	= ATA_UDMA6,
@@ -617,9 +636,8 @@ static struct ata_port_info piix_port_info[] = { 


	[ich8_sata_ahci] =

	{

		.sht		= &piix_sht,

		.flags		= PIIX_SATA_FLAGS | PIIX_FLAG_SCR |

				  PIIX_FLAG_AHCI,

		.flags		= PIIX_SATA_FLAGS | PIIX_FLAG_AHCI |

				  PIIX_FLAG_SIDPR,

		.pio_mask	= 0x1f,	/* pio0-4 */

		.mwdma_mask	= 0x07, /* mwdma0-2 */

		.udma_mask	= ATA_UDMA6,
@@ -628,9 +646,8 @@ static struct ata_port_info piix_port_info[] = { 


	[ich8_2port_sata] =

	{

		.sht		= &piix_sht,

		.flags		= PIIX_SATA_FLAGS | PIIX_FLAG_SCR |

				  PIIX_FLAG_AHCI,

		.flags		= PIIX_SATA_FLAGS | PIIX_FLAG_AHCI |

				  PIIX_FLAG_SIDPR,

		.pio_mask	= 0x1f,	/* pio0-4 */

		.mwdma_mask	= 0x07, /* mwdma0-2 */

		.udma_mask	= ATA_UDMA6,
@@ -639,9 +656,7 @@ static struct ata_port_info piix_port_info[] = { 


	[tolapai_sata_ahci] =

	{

		.sht		= &piix_sht,

		.flags		= PIIX_SATA_FLAGS | PIIX_FLAG_SCR |

				  PIIX_FLAG_AHCI,

		.flags		= PIIX_SATA_FLAGS | PIIX_FLAG_AHCI,

		.pio_mask	= 0x1f,	/* pio0-4 */

		.mwdma_mask	= 0x07, /* mwdma0-2 */

		.udma_mask	= ATA_UDMA6,
@@ -650,9 +665,8 @@ static struct ata_port_info piix_port_info[] = { 


	[ich8m_apple_sata_ahci] =

	{

		.sht		= &piix_sht,

		.flags		= PIIX_SATA_FLAGS | PIIX_FLAG_SCR |

				  PIIX_FLAG_AHCI,

		.flags		= PIIX_SATA_FLAGS | PIIX_FLAG_AHCI |

				  PIIX_FLAG_SIDPR,

		.pio_mask	= 0x1f,	/* pio0-4 */

		.mwdma_mask	= 0x07, /* mwdma0-2 */

		.udma_mask	= ATA_UDMA6,
@@ -1001,6 +1015,180 @@ static void ich_set_dmamode(struct ata_port *ap, struct ata_device *adev) 
	do_pata_set_dmamode(ap, adev, 1);

}



/*

 * Serial ATA Index/Data Pair Superset Registers access

 *

 * Beginning from ICH8, there's a sane way to access SCRs using index

 * and data register pair located at BAR5.  This creates an

 * interesting problem of mapping two SCRs to one port.

 *

 * Although they have separate SCRs, the master and slave aren't

 * independent enough to be treated as separate links - e.g. softreset

 * resets both.  Also, there's no protocol defined for hard resetting

 * singled device sharing the virtual port (no defined way to acquire

 * device signature).  This is worked around by merging the SCR values

 * into one sensible value and requesting follow-up SRST after

 * hardreset.

 *

 * SCR merging is perfomed in nibbles which is the unit contents in

 * SCRs are organized.  If two values are equal, the value is used.

 * When they differ, merge table which lists precedence of possible

 * values is consulted and the first match or the last entry when

 * nothing matches is used.  When there's no merge table for the

 * specific nibble, value from the first port is used.

 */

static const int piix_sidx_map[] = {

	[SCR_STATUS]	= 0,

	[SCR_ERROR]	= 2,

	[SCR_CONTROL]	= 1,

};



static void piix_sidpr_sel(struct ata_device *dev, unsigned int reg)

{

	struct ata_port *ap = dev->link->ap;

	struct piix_host_priv *hpriv = ap->host->private_data;



	iowrite32(((ap->port_no * 2 + dev->devno) << 8) | piix_sidx_map[reg],

		  hpriv->sidpr + PIIX_SIDPR_IDX);

}



static int piix_sidpr_read(struct ata_device *dev, unsigned int reg)

{

	struct piix_host_priv *hpriv = dev->link->ap->host->private_data;



	piix_sidpr_sel(dev, reg);

	return ioread32(hpriv->sidpr + PIIX_SIDPR_DATA);

}



static void piix_sidpr_write(struct ata_device *dev, unsigned int reg, u32 val)

{

	struct piix_host_priv *hpriv = dev->link->ap->host->private_data;



	piix_sidpr_sel(dev, reg);

	iowrite32(val, hpriv->sidpr + PIIX_SIDPR_DATA);

}



u32 piix_merge_scr(u32 val0, u32 val1, const int * const *merge_tbl)

{

	u32 val = 0;

	int i, mi;



	for (i = 0, mi = 0; i < 32 / 4; i++) {

		u8 c0 = (val0 >> (i * 4)) & 0xf;

		u8 c1 = (val1 >> (i * 4)) & 0xf;

		u8 merged = c0;

		const int *cur;



		/* if no merge preference, assume the first value */

		cur = merge_tbl[mi];

		if (!cur)

			goto done;

		mi++;



		/* if two values equal, use it */

		if (c0 == c1)

			goto done;



		/* choose the first match or the last from the merge table */

		while (*cur != -1) {

			if (c0 == *cur || c1 == *cur)

				break;

			cur++;

		}

		if (*cur == -1)

			cur--;

		merged = *cur;

	done:

		val |= merged << (i * 4);

	}



	return val;

}



static int piix_sidpr_scr_read(struct ata_port *ap, unsigned int reg, u32 *val)

{

	const int * const sstatus_merge_tbl[] = {

		/* DET */ (const int []){ 1, 3, 0, 4, 3, -1 },

		/* SPD */ (const int []){ 2, 1, 0, -1 },

		/* IPM */ (const int []){ 6, 2, 1, 0, -1 },

		NULL,

	};

	const int * const scontrol_merge_tbl[] = {

		/* DET */ (const int []){ 1, 0, 4, 0, -1 },

		/* SPD */ (const int []){ 0, 2, 1, 0, -1 },

		/* IPM */ (const int []){ 0, 1, 2, 3, 0, -1 },

		NULL,

	};

	u32 v0, v1;



	if (reg >= ARRAY_SIZE(piix_sidx_map))

		return -EINVAL;



	if (!(ap->flags & ATA_FLAG_SLAVE_POSS)) {

		*val = piix_sidpr_read(&ap->link.device[0], reg);

		return 0;

	}



	v0 = piix_sidpr_read(&ap->link.device[0], reg);

	v1 = piix_sidpr_read(&ap->link.device[1], reg);



	switch (reg) {

	case SCR_STATUS:

		*val = piix_merge_scr(v0, v1, sstatus_merge_tbl);

		break;

	case SCR_ERROR:

		*val = v0 | v1;

		break;

	case SCR_CONTROL:

		*val = piix_merge_scr(v0, v1, scontrol_merge_tbl);

		break;

	}



	return 0;

}



static int piix_sidpr_scr_write(struct ata_port *ap, unsigned int reg, u32 val)

{

	if (reg >= ARRAY_SIZE(piix_sidx_map))

		return -EINVAL;



	piix_sidpr_write(&ap->link.device[0], reg, val);



	if (ap->flags & ATA_FLAG_SLAVE_POSS)

		piix_sidpr_write(&ap->link.device[1], reg, val);



	return 0;

}



static int piix_sidpr_hardreset(struct ata_link *link, unsigned int *class,

				unsigned long deadline)

{

	const unsigned long *timing = sata_ehc_deb_timing(&link->eh_context);

	int rc;



	/* do hardreset */

	rc = sata_link_hardreset(link, timing, deadline);

	if (rc) {

		ata_link_printk(link, KERN_ERR,

				"COMRESET failed (errno=%d)\n", rc);

		return rc;

	}



	/* TODO: phy layer with polling, timeouts, etc. */

	if (ata_link_offline(link)) {

		*class = ATA_DEV_NONE;

		return 0;

	}



	return -EAGAIN;

}



static void piix_sidpr_error_handler(struct ata_port *ap)

{

	ata_bmdma_drive_eh(ap, ata_std_prereset, ata_std_softreset,

			   piix_sidpr_hardreset, ata_std_postreset);

}



#ifdef CONFIG_PM

static int piix_broken_suspend(void)

{
@@ -1033,6 +1221,13 @@ static int piix_broken_suspend(void) 
				DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M5"),

			},

		},

		{

			.ident = "TECRA M6",

			.matches = {

				DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),

				DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M6"),

			},

		},

		{

			.ident = "TECRA M7",

			.matches = {
@@ -1047,6 +1242,13 @@ static int piix_broken_suspend(void) 
				DMI_MATCH(DMI_PRODUCT_NAME, "TECRA A8"),

			},

		},

		{

			.ident = "Satellite R20",

			.matches = {

				DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),

				DMI_MATCH(DMI_PRODUCT_NAME, "Satellite R20"),

			},

		},

		{

			.ident = "Satellite R25",

			.matches = {
@@ -1253,10 +1455,10 @@ static int __devinit piix_check_450nx_errata(struct pci_dev *ata_dev) 
	return no_piix_dma;

}



static void __devinit piix_init_pcs(struct pci_dev *pdev,

				    struct ata_port_info *pinfo,

static void __devinit piix_init_pcs(struct ata_host *host,

				    const struct piix_map_db *map_db)

{

	struct pci_dev *pdev = to_pci_dev(host->dev);

	u16 pcs, new_pcs;



	pci_read_config_word(pdev, ICH5_PCS, &pcs);
@@ -1270,11 +1472,10 @@ static void __devinit piix_init_pcs(struct pci_dev *pdev, 
	}

}



static void __devinit piix_init_sata_map(struct pci_dev *pdev,

static const int *__devinit piix_init_sata_map(struct pci_dev *pdev,

					       struct ata_port_info *pinfo,

					       const struct piix_map_db *map_db)

{

	struct piix_host_priv *hpriv = pinfo[0].private_data;

	const int *map;

	int i, invalid_map = 0;

	u8 map_value;
@@ -1298,7 +1499,6 @@ static void __devinit piix_init_sata_map(struct pci_dev *pdev, 
		case IDE:

			WARN_ON((i & 1) || map[i + 1] != IDE);

			pinfo[i / 2] = piix_port_info[ich_pata_100];

			pinfo[i / 2].private_data = hpriv;

			i++;

			printk(" IDE IDE");

			break;
@@ -1316,7 +1516,33 @@ static void __devinit piix_init_sata_map(struct pci_dev *pdev, 
		dev_printk(KERN_ERR, &pdev->dev,

			   "invalid MAP value %u\n", map_value);



	hpriv->map = map;

	return map;

}



static void __devinit piix_init_sidpr(struct ata_host *host)

{

	struct pci_dev *pdev = to_pci_dev(host->dev);

	struct piix_host_priv *hpriv = host->private_data;

	int i;



	/* check for availability */

	for (i = 0; i < 4; i++)

		if (hpriv->map[i] == IDE)

			return;



	if (!(host->ports[0]->flags & PIIX_FLAG_SIDPR))

		return;



	if (pci_resource_start(pdev, PIIX_SIDPR_BAR) == 0 ||

	    pci_resource_len(pdev, PIIX_SIDPR_BAR) != PIIX_SIDPR_LEN)

		return;



	if (pcim_iomap_regions(pdev, 1 << PIIX_SIDPR_BAR, DRV_NAME))

		return;



	hpriv->sidpr = pcim_iomap_table(pdev)[PIIX_SIDPR_BAR];

	host->ports[0]->ops = &piix_sidpr_sata_ops;

	host->ports[1]->ops = &piix_sidpr_sata_ops;

}



static void piix_iocfg_bit18_quirk(struct pci_dev *pdev)
@@ -1375,8 +1601,10 @@ static int piix_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) 
	struct device *dev = &pdev->dev;

	struct ata_port_info port_info[2];

	const struct ata_port_info *ppi[] = { &port_info[0], &port_info[1] };

	struct piix_host_priv *hpriv;

	unsigned long port_flags;

	struct ata_host *host;

	struct piix_host_priv *hpriv;

	int rc;



	if (!printed_version++)

		dev_printk(KERN_DEBUG, &pdev->dev,
@@ -1386,17 +1614,31 @@ static int piix_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) 
	if (!in_module_init)

		return -ENODEV;



	port_info[0] = piix_port_info[ent->driver_data];

	port_info[1] = piix_port_info[ent->driver_data];



	port_flags = port_info[0].flags;



	/* enable device and prepare host */

	rc = pcim_enable_device(pdev);

	if (rc)

		return rc;



	/* SATA map init can change port_info, do it before prepping host */

	hpriv = devm_kzalloc(dev, sizeof(*hpriv), GFP_KERNEL);

	if (!hpriv)

		return -ENOMEM;



	port_info[0] = piix_port_info[ent->driver_data];

	port_info[1] = piix_port_info[ent->driver_data];

	port_info[0].private_data = hpriv;

	port_info[1].private_data = hpriv;

	if (port_flags & ATA_FLAG_SATA)

		hpriv->map = piix_init_sata_map(pdev, port_info,

					piix_map_db_table[ent->driver_data]);



	port_flags = port_info[0].flags;

	rc = ata_pci_prepare_sff_host(pdev, ppi, &host);

	if (rc)

		return rc;

	host->private_data = hpriv;



	/* initialize controller */

	if (port_flags & PIIX_FLAG_AHCI) {

		u8 tmp;

		pci_read_config_byte(pdev, PIIX_SCC, &tmp);
@@ -1407,12 +1649,9 @@ static int piix_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) 
		}

	}



	/* Initialize SATA map */

	if (port_flags & ATA_FLAG_SATA) {

		piix_init_sata_map(pdev, port_info,

				   piix_map_db_table[ent->driver_data]);

		piix_init_pcs(pdev, port_info,

			      piix_map_db_table[ent->driver_data]);

		piix_init_pcs(host, piix_map_db_table[ent->driver_data]);

		piix_init_sidpr(host);

	}



	/* apply IOCFG bit18 quirk */
@@ -1431,12 +1670,14 @@ static int piix_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) 
		/* This writes into the master table but it does not

		   really matter for this errata as we will apply it to

		   all the PIIX devices on the board */

		port_info[0].mwdma_mask = 0;

		port_info[0].udma_mask = 0;

		port_info[1].mwdma_mask = 0;

		port_info[1].udma_mask = 0;

		host->ports[0]->mwdma_mask = 0;

		host->ports[0]->udma_mask = 0;

		host->ports[1]->mwdma_mask = 0;

		host->ports[1]->udma_mask = 0;

	}

	return ata_pci_init_one(pdev, ppi);



	pci_set_master(pdev);

	return ata_pci_activate_sff_host(host, ata_interrupt, &piix_sht);

}



static int __init piix_init(void)

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