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

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* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  ahci: sis can't do PMP
  ata_piix: add TECRA M4 to broken suspend list
  LIBATA: Add HAVE_PATA_PLATFORM to select PATA_PLATFORM driver
  sata_mv: warn on PIO with multiple DRQs
  sata_mv: enable async_notify for 60x1 Rev.C0 and higher
  libata: don't check whether to use DMA or not for no data commands
  ahci: jmb361 has only one port
This commit is contained in:
Linus Torvalds 2008-06-20 12:31:03 -07:00
commit b4eea67a12
7 changed files with 67 additions and 16 deletions
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10
drivers/ata/Kconfig
View file

@ -651,9 +651,17 @@ config PATA_WINBOND_VLB
Support for the Winbond W83759A controller on Vesa Local Bus
systems.
config HAVE_PATA_PLATFORM
bool
help
This is an internal configuration node for any machine that
uses pata-platform driver to enable the relevant driver in the
configuration structure without having to submit endless patches
to update the PATA_PLATFORM entry.
config PATA_PLATFORM
tristate "Generic platform device PATA support"
depends on EMBEDDED || ARCH_RPC || PPC
depends on EMBEDDED || ARCH_RPC || PPC || HAVE_PATA_PLATFORM
help
This option enables support for generic directly connected ATA
devices commonly found on embedded systems.

23
drivers/ata/ahci.c
View file

@ -90,6 +90,7 @@ enum {
board_ahci_mv = 4,
board_ahci_sb700 = 5,
board_ahci_mcp65 = 6,
board_ahci_nopmp = 7,
/* global controller registers */
HOST_CAP = 0x00, /* host capabilities */
@ -401,6 +402,14 @@ static const struct ata_port_info ahci_port_info[] = {
.udma_mask = ATA_UDMA6,
.port_ops = &ahci_ops,
},
/* board_ahci_nopmp */
{
AHCI_HFLAGS (AHCI_HFLAG_NO_PMP),
.flags = AHCI_FLAG_COMMON,
.pio_mask = 0x1f, /* pio0-4 */
.udma_mask = ATA_UDMA6,
.port_ops = &ahci_ops,
},
};
static const struct pci_device_id ahci_pci_tbl[] = {
@ -525,9 +534,9 @@ static const struct pci_device_id ahci_pci_tbl[] = {
{ PCI_VDEVICE(NVIDIA, 0x0bc7), board_ahci }, /* MCP7B */
/* SiS */
{ PCI_VDEVICE(SI, 0x1184), board_ahci }, /* SiS 966 */
{ PCI_VDEVICE(SI, 0x1185), board_ahci }, /* SiS 966 */
{ PCI_VDEVICE(SI, 0x0186), board_ahci }, /* SiS 968 */
{ PCI_VDEVICE(SI, 0x1184), board_ahci_nopmp }, /* SiS 966 */
{ PCI_VDEVICE(SI, 0x1185), board_ahci_nopmp }, /* SiS 968 */
{ PCI_VDEVICE(SI, 0x0186), board_ahci_nopmp }, /* SiS 968 */
/* Marvell */
{ PCI_VDEVICE(MARVELL, 0x6145), board_ahci_mv }, /* 6145 */
@ -653,6 +662,14 @@ static void ahci_save_initial_config(struct pci_dev *pdev,
cap &= ~HOST_CAP_PMP;
}
if (pdev->vendor == PCI_VENDOR_ID_JMICRON && pdev->device == 0x2361 &&
port_map != 1) {
dev_printk(KERN_INFO, &pdev->dev,
"JMB361 has only one port, port_map 0x%x -> 0x%x\n",
port_map, 1);
port_map = 1;
}
/*
* Temporary Marvell 6145 hack: PATA port presence
* is asserted through the standard AHCI port

7
drivers/ata/ata_piix.c
View file

@ -1042,6 +1042,13 @@ static int piix_broken_suspend(void)
DMI_MATCH(DMI_PRODUCT_NAME, "Tecra M4"),
},
},
{
.ident = "TECRA M4",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M4"),
},
},
{
.ident = "TECRA M5",
.matches = {

4
drivers/ata/libata-core.c
View file

@ -4297,7 +4297,7 @@ void ata_sg_clean(struct ata_queued_cmd *qc)
}
/**
* ata_check_atapi_dma - Check whether ATAPI DMA can be supported
* atapi_check_dma - Check whether ATAPI DMA can be supported
* @qc: Metadata associated with taskfile to check
*
* Allow low-level driver to filter ATA PACKET commands, returning
@ -4310,7 +4310,7 @@ void ata_sg_clean(struct ata_queued_cmd *qc)
* RETURNS: 0 when ATAPI DMA can be used
* nonzero otherwise
*/
int ata_check_atapi_dma(struct ata_queued_cmd *qc)
int atapi_check_dma(struct ata_queued_cmd *qc)
{
struct ata_port *ap = qc->ap;

16
drivers/ata/libata-scsi.c
View file

@ -2343,8 +2343,8 @@ static unsigned int atapi_xlat(struct ata_queued_cmd *qc)
{
struct scsi_cmnd *scmd = qc->scsicmd;
struct ata_device *dev = qc->dev;
int using_pio = (dev->flags & ATA_DFLAG_PIO);
int nodata = (scmd->sc_data_direction == DMA_NONE);
int using_pio = !nodata && (dev->flags & ATA_DFLAG_PIO);
unsigned int nbytes;
memset(qc->cdb, 0, dev->cdb_len);
@ -2362,7 +2362,7 @@ static unsigned int atapi_xlat(struct ata_queued_cmd *qc)
ata_qc_set_pc_nbytes(qc);
/* check whether ATAPI DMA is safe */
if (!using_pio && ata_check_atapi_dma(qc))
if (!nodata && !using_pio && atapi_check_dma(qc))
using_pio = 1;
/* Some controller variants snoop this value for Packet
@ -2402,13 +2402,11 @@ static unsigned int atapi_xlat(struct ata_queued_cmd *qc)
qc->tf.lbam = (nbytes & 0xFF);
qc->tf.lbah = (nbytes >> 8);
if (using_pio || nodata) {
/* no data, or PIO data xfer */
if (nodata)
qc->tf.protocol = ATAPI_PROT_NODATA;
else
qc->tf.protocol = ATAPI_PROT_PIO;
} else {
if (nodata)
qc->tf.protocol = ATAPI_PROT_NODATA;
else if (using_pio)
qc->tf.protocol = ATAPI_PROT_PIO;
else {
/* DMA data xfer */
qc->tf.protocol = ATAPI_PROT_DMA;
qc->tf.feature |= ATAPI_PKT_DMA;

2
drivers/ata/libata.h
View file

@ -106,7 +106,7 @@ 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);
extern void __ata_qc_complete(struct ata_queued_cmd *qc);
extern int ata_check_atapi_dma(struct ata_queued_cmd *qc);
extern int atapi_check_dma(struct ata_queued_cmd *qc);
extern void swap_buf_le16(u16 *buf, unsigned int buf_words);
extern void ata_dev_init(struct ata_device *dev);
extern void ata_link_init(struct ata_port *ap, struct ata_link *link, int pmp);

21
drivers/ata/sata_mv.c
View file

@ -1322,6 +1322,9 @@ static int mv_port_start(struct ata_port *ap)
goto out_port_free_dma_mem;
memset(pp->crpb, 0, MV_CRPB_Q_SZ);
/* 6041/6081 Rev. "C0" (and newer) are okay with async notify */
if (hpriv->hp_flags & MV_HP_ERRATA_60X1C0)
ap->flags |= ATA_FLAG_AN;
/*
* For GEN_I, there's no NCQ, so we only allocate a single sg_tbl.
* For later hardware, we need one unique sg_tbl per NCQ tag.
@ -1592,6 +1595,24 @@ static unsigned int mv_qc_issue(struct ata_queued_cmd *qc)
if ((qc->tf.protocol != ATA_PROT_DMA) &&
(qc->tf.protocol != ATA_PROT_NCQ)) {
static int limit_warnings = 10;
/*
* Errata SATA#16, SATA#24: warn if multiple DRQs expected.
*
* Someday, we might implement special polling workarounds
* for these, but it all seems rather unnecessary since we
* normally use only DMA for commands which transfer more
* than a single block of data.
*
* Much of the time, this could just work regardless.
* So for now, just log the incident, and allow the attempt.
*/
if (limit_warnings && (qc->nbytes / qc->sect_size) > 1) {
--limit_warnings;
ata_link_printk(qc->dev->link, KERN_WARNING, DRV_NAME
": attempting PIO w/multiple DRQ: "
"this may fail due to h/w errata\n");
}
/*
* We're about to send a non-EDMA capable command to the
* port. Turn off EDMA so there won't be problems accessing