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ahci: add HFLAG_YES_FBS and apply it to 88SE9128

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88SE9128 can do FBS and sets it in HOST_CAP but forgets to set FBSCP
in PORT_CMD.  Implement AHCI_HFLAG_YES_FBS and apply it to 88SE9128.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Tejun Heo 2010-07-24 16:53:48 +02:00 committed by Jeff Garzik
parent 6d981b9a91
commit 5f173107ec
3 changed files with 26 additions and 2 deletions
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11
drivers/ata/ahci.c
View File

@ -60,6 +60,7 @@ enum board_ids {
board_ahci,
board_ahci_ign_iferr,
board_ahci_nosntf,
board_ahci_yes_fbs,
/* board IDs for specific chipsets in alphabetical order */
board_ahci_mcp65,
@ -132,6 +133,14 @@ static const struct ata_port_info ahci_port_info[] = {
.udma_mask = ATA_UDMA6,
.port_ops = &ahci_ops,
},
[board_ahci_yes_fbs] =
{
AHCI_HFLAGS (AHCI_HFLAG_YES_FBS),
.flags = AHCI_FLAG_COMMON,
.pio_mask = ATA_PIO4,
.udma_mask = ATA_UDMA6,
.port_ops = &ahci_ops,
},
/* by chipsets */
[board_ahci_mcp65] =
{
@ -362,6 +371,8 @@ static const struct pci_device_id ahci_pci_tbl[] = {
/* Marvell */
{ PCI_VDEVICE(MARVELL, 0x6145), board_ahci_mv }, /* 6145 */
{ PCI_VDEVICE(MARVELL, 0x6121), board_ahci_mv }, /* 6121 */
{ PCI_DEVICE(0x1b4b, 0x9123),
.driver_data = board_ahci_yes_fbs }, /* 88se9128 */
/* Promise */
{ PCI_VDEVICE(PROMISE, 0x3f20), board_ahci }, /* PDC42819 */

1
drivers/ata/ahci.h
View File

@ -209,6 +209,7 @@ enum {
link offline */
AHCI_HFLAG_NO_SNTF = (1 << 12), /* no sntf */
AHCI_HFLAG_NO_FPDMA_AA = (1 << 13), /* no FPDMA AA */
AHCI_HFLAG_YES_FBS = (1 << 14), /* force FBS cap on */
/* ap->flags bits */

16
drivers/ata/libahci.c
View File

@ -430,6 +430,12 @@ void ahci_save_initial_config(struct device *dev,
cap &= ~HOST_CAP_SNTF;
}
if (!(cap & HOST_CAP_FBS) && (hpriv->flags & AHCI_HFLAG_YES_FBS)) {
dev_printk(KERN_INFO, dev,
"controller can do FBS, turning on CAP_FBS\n");
cap |= HOST_CAP_FBS;
}
if (force_port_map && port_map != force_port_map) {
dev_printk(KERN_INFO, dev, "forcing port_map 0x%x -> 0x%x\n",
port_map, force_port_map);
@ -2036,9 +2042,15 @@ static int ahci_port_start(struct ata_port *ap)
u32 cmd = readl(port_mmio + PORT_CMD);
if (cmd & PORT_CMD_FBSCP)
pp->fbs_supported = true;
else
else if (hpriv->flags & AHCI_HFLAG_YES_FBS) {
dev_printk(KERN_INFO, dev,
"port %d can do FBS, forcing FBSCP\n",
ap->port_no);
pp->fbs_supported = true;
} else
dev_printk(KERN_WARNING, dev,
"The port is not capable of FBS\n");
"port %d is not capable of FBS\n",
ap->port_no);
}
if (pp->fbs_supported) {