lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

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

Browse Source 
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  ahci: Workaround HW bug for SB600/700 SATA controller PMP support
  ahci: workarounds for mcp65
This commit is contained in:
Linus Torvalds
2008-06-13 07:40:57 -07:00
parent 51558576ea bd17243a84
commit fa8d84b78b
1 changed files with 112 additions and 25 deletions
Download Patch File Download Diff File Expand all files Collapse all files

137
drivers/ata/ahci.c
View File

@@ -89,6 +89,7 @@ enum {
board_ahci_sb600 = 3, board_ahci_sb600 = 3,
board_ahci_mv = 4, board_ahci_mv = 4,
board_ahci_sb700 = 5, board_ahci_sb700 = 5,
board_ahci_mcp65 = 6,
/* global controller registers */ /* global controller registers */
HOST_CAP = 0x00, /* host capabilities */ HOST_CAP = 0x00, /* host capabilities */
@@ -190,6 +191,7 @@ enum {
AHCI_HFLAG_NO_PMP = (1 << 6), /* no PMP */ AHCI_HFLAG_NO_PMP = (1 << 6), /* no PMP */
AHCI_HFLAG_NO_HOTPLUG = (1 << 7), /* ignore PxSERR.DIAG.N */ AHCI_HFLAG_NO_HOTPLUG = (1 << 7), /* ignore PxSERR.DIAG.N */
AHCI_HFLAG_SECT255 = (1 << 8), /* max 255 sectors */ AHCI_HFLAG_SECT255 = (1 << 8), /* max 255 sectors */
AHCI_HFLAG_YES_NCQ = (1 << 9), /* force NCQ cap on */
/* ap->flags bits */ /* ap->flags bits */
@@ -253,6 +255,8 @@ static void ahci_pmp_attach(struct ata_port *ap);
static void ahci_pmp_detach(struct ata_port *ap); static void ahci_pmp_detach(struct ata_port *ap);
static int ahci_softreset(struct ata_link *link, unsigned int *class, static int ahci_softreset(struct ata_link *link, unsigned int *class,
unsigned long deadline); unsigned long deadline);
static int ahci_sb600_softreset(struct ata_link *link, unsigned int *class,
unsigned long deadline);
static int ahci_hardreset(struct ata_link *link, unsigned int *class, static int ahci_hardreset(struct ata_link *link, unsigned int *class,
unsigned long deadline); unsigned long deadline);
static int ahci_vt8251_hardreset(struct ata_link *link, unsigned int *class, static int ahci_vt8251_hardreset(struct ata_link *link, unsigned int *class,
@@ -329,6 +333,12 @@ static struct ata_port_operations ahci_p5wdh_ops = {
.hardreset = ahci_p5wdh_hardreset, .hardreset = ahci_p5wdh_hardreset,
}; };
static struct ata_port_operations ahci_sb600_ops = {
.inherits = &ahci_ops,
.softreset = ahci_sb600_softreset,
.pmp_softreset = ahci_sb600_softreset,
};
#define AHCI_HFLAGS(flags) .private_data = (void *)(flags) #define AHCI_HFLAGS(flags) .private_data = (void *)(flags)
static const struct ata_port_info ahci_port_info[] = { static const struct ata_port_info ahci_port_info[] = {
@@ -359,11 +369,11 @@ static const struct ata_port_info ahci_port_info[] = {
{ {
AHCI_HFLAGS (AHCI_HFLAG_IGN_SERR_INTERNAL | AHCI_HFLAGS (AHCI_HFLAG_IGN_SERR_INTERNAL |
AHCI_HFLAG_32BIT_ONLY | AHCI_HFLAG_NO_MSI | AHCI_HFLAG_32BIT_ONLY | AHCI_HFLAG_NO_MSI |
AHCI_HFLAG_SECT255 | AHCI_HFLAG_NO_PMP), AHCI_HFLAG_SECT255),
.flags = AHCI_FLAG_COMMON, .flags = AHCI_FLAG_COMMON,
.pio_mask = 0x1f, /* pio0-4 */ .pio_mask = 0x1f, /* pio0-4 */
.udma_mask = ATA_UDMA6, .udma_mask = ATA_UDMA6,
.port_ops = &ahci_ops, .port_ops = &ahci_sb600_ops,
}, },
/* board_ahci_mv */ /* board_ahci_mv */
{ {
@@ -377,8 +387,15 @@ static const struct ata_port_info ahci_port_info[] = {
}, },
/* board_ahci_sb700 */ /* board_ahci_sb700 */
{ {
AHCI_HFLAGS (AHCI_HFLAG_IGN_SERR_INTERNAL | AHCI_HFLAGS (AHCI_HFLAG_IGN_SERR_INTERNAL),
AHCI_HFLAG_NO_PMP), .flags = AHCI_FLAG_COMMON,
.pio_mask = 0x1f, /* pio0-4 */
.udma_mask = ATA_UDMA6,
.port_ops = &ahci_sb600_ops,
},
/* board_ahci_mcp65 */
{
AHCI_HFLAGS (AHCI_HFLAG_YES_NCQ),
.flags = AHCI_FLAG_COMMON, .flags = AHCI_FLAG_COMMON,
.pio_mask = 0x1f, /* pio0-4 */ .pio_mask = 0x1f, /* pio0-4 */
.udma_mask = ATA_UDMA6, .udma_mask = ATA_UDMA6,
@@ -438,14 +455,14 @@ static const struct pci_device_id ahci_pci_tbl[] = {
{ PCI_VDEVICE(VIA, 0x6287), board_ahci_vt8251 }, /* VIA VT8251 */ { PCI_VDEVICE(VIA, 0x6287), board_ahci_vt8251 }, /* VIA VT8251 */
/* NVIDIA */ /* NVIDIA */
{ PCI_VDEVICE(NVIDIA, 0x044c), board_ahci }, /* MCP65 */ { PCI_VDEVICE(NVIDIA, 0x044c), board_ahci_mcp65 }, /* MCP65 */
{ PCI_VDEVICE(NVIDIA, 0x044d), board_ahci }, /* MCP65 */ { PCI_VDEVICE(NVIDIA, 0x044d), board_ahci_mcp65 }, /* MCP65 */
{ PCI_VDEVICE(NVIDIA, 0x044e), board_ahci }, /* MCP65 */ { PCI_VDEVICE(NVIDIA, 0x044e), board_ahci_mcp65 }, /* MCP65 */
{ PCI_VDEVICE(NVIDIA, 0x044f), board_ahci }, /* MCP65 */ { PCI_VDEVICE(NVIDIA, 0x044f), board_ahci_mcp65 }, /* MCP65 */
{ PCI_VDEVICE(NVIDIA, 0x045c), board_ahci }, /* MCP65 */ { PCI_VDEVICE(NVIDIA, 0x045c), board_ahci_mcp65 }, /* MCP65 */
{ PCI_VDEVICE(NVIDIA, 0x045d), board_ahci }, /* MCP65 */ { PCI_VDEVICE(NVIDIA, 0x045d), board_ahci_mcp65 }, /* MCP65 */
{ PCI_VDEVICE(NVIDIA, 0x045e), board_ahci }, /* MCP65 */ { PCI_VDEVICE(NVIDIA, 0x045e), board_ahci_mcp65 }, /* MCP65 */
{ PCI_VDEVICE(NVIDIA, 0x045f), board_ahci }, /* MCP65 */ { PCI_VDEVICE(NVIDIA, 0x045f), board_ahci_mcp65 }, /* MCP65 */
{ PCI_VDEVICE(NVIDIA, 0x0550), board_ahci }, /* MCP67 */ { PCI_VDEVICE(NVIDIA, 0x0550), board_ahci }, /* MCP67 */
{ PCI_VDEVICE(NVIDIA, 0x0551), board_ahci }, /* MCP67 */ { PCI_VDEVICE(NVIDIA, 0x0551), board_ahci }, /* MCP67 */
{ PCI_VDEVICE(NVIDIA, 0x0552), board_ahci }, /* MCP67 */ { PCI_VDEVICE(NVIDIA, 0x0552), board_ahci }, /* MCP67 */
@@ -624,6 +641,12 @@ static void ahci_save_initial_config(struct pci_dev *pdev,
cap &= ~HOST_CAP_NCQ; cap &= ~HOST_CAP_NCQ;
} }
if (!(cap & HOST_CAP_NCQ) && (hpriv->flags & AHCI_HFLAG_YES_NCQ)) {
dev_printk(KERN_INFO, &pdev->dev,
"controller can do NCQ, turning on CAP_NCQ\n");
cap |= HOST_CAP_NCQ;
}
if ((cap & HOST_CAP_PMP) && (hpriv->flags & AHCI_HFLAG_NO_PMP)) { if ((cap & HOST_CAP_PMP) && (hpriv->flags & AHCI_HFLAG_NO_PMP)) {
dev_printk(KERN_INFO, &pdev->dev, dev_printk(KERN_INFO, &pdev->dev,
"controller can't do PMP, turning off CAP_PMP\n"); "controller can't do PMP, turning off CAP_PMP\n");
@@ -1262,19 +1285,11 @@ static int ahci_exec_polled_cmd(struct ata_port *ap, int pmp,
return 0; return 0;
} }
static int ahci_check_ready(struct ata_link *link) static int ahci_do_softreset(struct ata_link *link, unsigned int *class,
{ int pmp, unsigned long deadline,
void __iomem *port_mmio = ahci_port_base(link->ap); int (*check_ready)(struct ata_link *link))
u8 status = readl(port_mmio + PORT_TFDATA) & 0xFF;
return ata_check_ready(status);
}
static int ahci_softreset(struct ata_link *link, unsigned int *class,
unsigned long deadline)
{ {
struct ata_port *ap = link->ap; struct ata_port *ap = link->ap;
int pmp = sata_srst_pmp(link);
const char *reason = NULL; const char *reason = NULL;
unsigned long now, msecs; unsigned long now, msecs;
struct ata_taskfile tf; struct ata_taskfile tf;
@@ -1312,7 +1327,7 @@ static int ahci_softreset(struct ata_link *link, unsigned int *class,
ahci_exec_polled_cmd(ap, pmp, &tf, 0, 0, 0); ahci_exec_polled_cmd(ap, pmp, &tf, 0, 0, 0);
/* wait for link to become ready */ /* wait for link to become ready */
rc = ata_wait_after_reset(link, deadline, ahci_check_ready); rc = ata_wait_after_reset(link, deadline, check_ready);
/* link occupied, -ENODEV too is an error */ /* link occupied, -ENODEV too is an error */
if (rc) { if (rc) {
reason = "device not ready"; reason = "device not ready";
@@ -1328,6 +1343,72 @@ static int ahci_softreset(struct ata_link *link, unsigned int *class,
return rc; return rc;
} }
static int ahci_check_ready(struct ata_link *link)
{
void __iomem *port_mmio = ahci_port_base(link->ap);
u8 status = readl(port_mmio + PORT_TFDATA) & 0xFF;
return ata_check_ready(status);
}
static int ahci_softreset(struct ata_link *link, unsigned int *class,
unsigned long deadline)
{
int pmp = sata_srst_pmp(link);
DPRINTK("ENTER\n");
return ahci_do_softreset(link, class, pmp, deadline, ahci_check_ready);
}
static int ahci_sb600_check_ready(struct ata_link *link)
{
void __iomem *port_mmio = ahci_port_base(link->ap);
u8 status = readl(port_mmio + PORT_TFDATA) & 0xFF;
u32 irq_status = readl(port_mmio + PORT_IRQ_STAT);
/*
* There is no need to check TFDATA if BAD PMP is found due to HW bug,
* which can save timeout delay.
*/
if (irq_status & PORT_IRQ_BAD_PMP)
return -EIO;
return ata_check_ready(status);
}
static int ahci_sb600_softreset(struct ata_link *link, unsigned int *class,
unsigned long deadline)
{
struct ata_port *ap = link->ap;
void __iomem *port_mmio = ahci_port_base(ap);
int pmp = sata_srst_pmp(link);
int rc;
u32 irq_sts;
DPRINTK("ENTER\n");
rc = ahci_do_softreset(link, class, pmp, deadline,
ahci_sb600_check_ready);
/*
* Soft reset fails on some ATI chips with IPMS set when PMP
* is enabled but SATA HDD/ODD is connected to SATA port,
* do soft reset again to port 0.
*/
if (rc == -EIO) {
irq_sts = readl(port_mmio + PORT_IRQ_STAT);
if (irq_sts & PORT_IRQ_BAD_PMP) {
ata_link_printk(link, KERN_WARNING,
"failed due to HW bug, retry pmp=0\n");
rc = ahci_do_softreset(link, class, 0, deadline,
ahci_check_ready);
}
}
return rc;
}
static int ahci_hardreset(struct ata_link *link, unsigned int *class, static int ahci_hardreset(struct ata_link *link, unsigned int *class,
unsigned long deadline) unsigned long deadline)
{ {
@@ -2118,7 +2199,8 @@ static void ahci_p5wdh_workaround(struct ata_host *host)
static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
{ {
static int printed_version; static int printed_version;
struct ata_port_info pi = ahci_port_info[ent->driver_data]; unsigned int board_id = ent->driver_data;
struct ata_port_info pi = ahci_port_info[board_id];
const struct ata_port_info *ppi[] = { &pi, NULL }; const struct ata_port_info *ppi[] = { &pi, NULL };
struct device *dev = &pdev->dev; struct device *dev = &pdev->dev;
struct ahci_host_priv *hpriv; struct ahci_host_priv *hpriv;
@@ -2167,6 +2249,11 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
return -ENOMEM; return -ENOMEM;
hpriv->flags |= (unsigned long)pi.private_data; hpriv->flags |= (unsigned long)pi.private_data;
/* MCP65 revision A1 and A2 can't do MSI */
if (board_id == board_ahci_mcp65 &&
(pdev->revision == 0xa1 || pdev->revision == 0xa2))
hpriv->flags |= AHCI_HFLAG_NO_MSI;
if ((hpriv->flags & AHCI_HFLAG_NO_MSI) || pci_enable_msi(pdev)) if ((hpriv->flags & AHCI_HFLAG_NO_MSI) || pci_enable_msi(pdev))
pci_intx(pdev, 1); pci_intx(pdev, 1);