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| author | Tejun Heo <htejun@gmail.com> | 2006-11-29 03:33:14 +0100 |
|---|---|---|
| committer | Tejun Heo <htejun@gmail.com> | 2006-11-29 06:57:44 +0100 |
| commit | 41669553353554211310cdb23079d58af1fda41e (patch) | |
| tree | 2aace00509badc17ad432fa5e2b83f56b6d7453e /drivers/ata | |
| parent | [PATCH] libata: Fixup ata_sas_queuecmd to handle __ata_scsi_queuecmd failure (diff) | |
| download | linux-41669553353554211310cdb23079d58af1fda41e.tar.xz linux-41669553353554211310cdb23079d58af1fda41e.zip | |
[PATCH] ahci: ignore PORT_IRQ_IF_ERR on JMB controllers
JMicron AHCI controllers set PORT_IRQ_IF_ERR on device errors. The
IRQ status bit indicates interface error or protocol mismatch and ahci
driver interprets it into AC_ERR_ATA_BUS. So, whenever an ATAPI
device raises check condition, ahci interprets it as ATA bus error and
thus resets it which, in turn, raises check condition thus creating a
reset loop and rendering the device unuseable.
This patch makes JMB controllers ignore PORT_IRQ_IF_ERR when
interpreting error condition.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Justin Tsai <justin@jmicron.com>
Diffstat (limited to 'drivers/ata')
| -rw-r--r-- | drivers/ata/ahci.c | 27 |
1 files changed, 22 insertions, 5 deletions
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index f510e1196dc6..bddb14e91d3c 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -78,6 +78,7 @@ enum { board_ahci = 0, board_ahci_vt8251 = 1, + board_ahci_ign_iferr = 2, /* global controller registers */ HOST_CAP = 0x00, /* host capabilities */ @@ -168,6 +169,7 @@ enum { /* ap->flags bits */ AHCI_FLAG_RESET_NEEDS_CLO = (1 << 24), AHCI_FLAG_NO_NCQ = (1 << 25), + AHCI_FLAG_IGN_IRQ_IF_ERR = (1 << 26), /* ignore IRQ_IF_ERR */ }; struct ahci_cmd_hdr { @@ -295,6 +297,17 @@ static const struct ata_port_info ahci_port_info[] = { .udma_mask = 0x7f, /* udma0-6 ; FIXME */ .port_ops = &ahci_ops, }, + /* board_ahci_ign_iferr */ + { + .sht = &ahci_sht, + .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | + ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA | + ATA_FLAG_SKIP_D2H_BSY | + AHCI_FLAG_IGN_IRQ_IF_ERR, + .pio_mask = 0x1f, /* pio0-4 */ + .udma_mask = 0x7f, /* udma0-6 ; FIXME */ + .port_ops = &ahci_ops, + }, }; static const struct pci_device_id ahci_pci_tbl[] = { @@ -327,11 +340,11 @@ static const struct pci_device_id ahci_pci_tbl[] = { { PCI_VDEVICE(INTEL, 0x294e), board_ahci }, /* ICH9M */ /* JMicron */ - { PCI_VDEVICE(JMICRON, 0x2360), board_ahci }, /* JMicron JMB360 */ - { PCI_VDEVICE(JMICRON, 0x2361), board_ahci }, /* JMicron JMB361 */ - { PCI_VDEVICE(JMICRON, 0x2363), board_ahci }, /* JMicron JMB363 */ - { PCI_VDEVICE(JMICRON, 0x2365), board_ahci }, /* JMicron JMB365 */ - { PCI_VDEVICE(JMICRON, 0x2366), board_ahci }, /* JMicron JMB366 */ + { PCI_VDEVICE(JMICRON, 0x2360), board_ahci_ign_iferr }, /* JMB360 */ + { PCI_VDEVICE(JMICRON, 0x2361), board_ahci_ign_iferr }, /* JMB361 */ + { PCI_VDEVICE(JMICRON, 0x2363), board_ahci_ign_iferr }, /* JMB363 */ + { PCI_VDEVICE(JMICRON, 0x2365), board_ahci_ign_iferr }, /* JMB365 */ + { PCI_VDEVICE(JMICRON, 0x2366), board_ahci_ign_iferr }, /* JMB366 */ /* ATI */ { PCI_VDEVICE(ATI, 0x4380), board_ahci }, /* ATI SB600 non-raid */ @@ -980,6 +993,10 @@ static void ahci_error_intr(struct ata_port *ap, u32 irq_stat) /* analyze @irq_stat */ ata_ehi_push_desc(ehi, "irq_stat 0x%08x", irq_stat); + /* some controllers set IRQ_IF_ERR on device errors, ignore it */ + if (ap->flags & AHCI_FLAG_IGN_IRQ_IF_ERR) + irq_stat &= ~PORT_IRQ_IF_ERR; + if (irq_stat & PORT_IRQ_TF_ERR) err_mask |= AC_ERR_DEV; |