Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=8d8ef2fb931d1035e1f02095086cfd3f78eafe3f
Commit: 8d8ef2fb931d1035e1f02095086cfd3f78eafe3f
Parent: 00242ec87608d7a0ed989e54333f3fc8f3d665b0
Author: Thomas Rohwer <[EMAIL PROTECTED]>
AuthorDate: Mon Nov 19 11:54:24 2007 +0900
Committer: Tejun Heo <[EMAIL PROTECTED]>
CommitDate: Mon Nov 19 12:28:11 2007 +0900
ata_piix: only enable the first port on apple macbook pro
ICH8M on apple macbook pro occasionally locks up completely during PCS
initialization if ports other than the first one are enabled. Add a
separate controller ID and only enable the first port.
tj: commit description added and patch updated to fit with the
previous controller ID update.
Signed-off-by: Thomas Rohwer <[EMAIL PROTECTED]>
Signed-off-by: Tejun Heo <[EMAIL PROTECTED]>
---
drivers/ata/ata_piix.c | 28 ++++++++++++++++++++++++++++
1 files changed, 28 insertions(+), 0 deletions(-)
diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
index 77fea05..d5ff1d8 100644
--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -130,6 +130,7 @@ enum {
ich6m_sata_ahci,
ich8_sata_ahci,
ich8_2port_sata,
+ ich8m_apple_sata_ahci, /* locks up on second port enable */
tolapai_sata_ahci,
/* constants for mapping table */
@@ -242,6 +243,8 @@ static const struct pci_device_id piix_pci_tbl[] = {
{ 0x8086, 0x2825, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
/* Mobile SATA Controller IDE (ICH8M) */
{ 0x8086, 0x2828, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
+ /* Mobile SATA Controller IDE (ICH8M), Apple */
+ { 0x8086, 0x2828, 0x106b, 0x00a0, 0, 0, ich8m_apple_sata_ahci },
/* SATA Controller IDE (ICH9) */
{ 0x8086, 0x2920, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
/* SATA Controller IDE (ICH9) */
@@ -449,6 +452,18 @@ static const struct piix_map_db ich8_2port_map_db = {
},
};
+static const struct piix_map_db ich8m_apple_map_db = {
+ .mask = 0x3,
+ .port_enable = 0x1,
+ .map = {
+ /* PM PS SM SS MAP */
+ { P0, NA, NA, NA }, /* 00b */
+ { RV, RV, RV, RV },
+ { P0, P2, IDE, IDE }, /* 10b */
+ { RV, RV, RV, RV },
+ },
+};
+
static const struct piix_map_db tolapai_map_db = {
.mask = 0x3,
.port_enable = 0x3,
@@ -468,6 +483,7 @@ static const struct piix_map_db *piix_map_db_table[] = {
[ich6m_sata_ahci] = &ich6m_map_db,
[ich8_sata_ahci] = &ich8_map_db,
[ich8_2port_sata] = &ich8_2port_map_db,
+ [ich8m_apple_sata_ahci] = &ich8m_apple_map_db,
[tolapai_sata_ahci] = &tolapai_map_db,
};
@@ -595,6 +611,18 @@ static struct ata_port_info piix_port_info[] = {
.udma_mask = ATA_UDMA6,
.port_ops = &piix_sata_ops,
},
+
+ [ich8m_apple_sata_ahci] =
+ {
+ .sht = &piix_sht,
+ .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SCR |
+ PIIX_FLAG_AHCI,
+ .pio_mask = 0x1f, /* pio0-4 */
+ .mwdma_mask = 0x07, /* mwdma0-2 */
+ .udma_mask = ATA_UDMA6,
+ .port_ops = &piix_sata_ops,
+ },
+
};
static struct pci_bits piix_enable_bits[] = {
-
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