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ahci: Store interrupt value

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Use a stored value for which interrupts to enable.  Changing this allows
us to selectively turn off certain interrupts later and have them
stay off.

Signed-off-by:  Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Kristen Carlson Accardi 2007-08-09 14:23:41 -07:00 committed by Jeff Garzik
parent 2f2949680a
commit a738492501
1 changed files with 10 additions and 1 deletions
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11
drivers/ata/ahci.c
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@ -175,6 +175,7 @@ enum {
AHCI_FLAG_32BIT_ONLY = (1 << 28), /* force 32bit */
AHCI_FLAG_MV_PATA = (1 << 29), /* PATA port */
AHCI_FLAG_NO_MSI = (1 << 30), /* no PCI MSI */
AHCI_FLAG_NO_HOTPLUG = (1 << 31), /* ignore PxSERR.DIAG.N */
AHCI_FLAG_COMMON = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA |
@ -215,6 +216,7 @@ struct ahci_port_priv {
unsigned int ncq_saw_d2h:1;
unsigned int ncq_saw_dmas:1;
unsigned int ncq_saw_sdb:1;
u32 intr_mask; /* interrupts to enable */
};
static int ahci_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val);
@ -1552,6 +1554,7 @@ static void ahci_thaw(struct ata_port *ap)
void __iomem *mmio = ap->host->iomap[AHCI_PCI_BAR];
void __iomem *port_mmio = ahci_port_base(ap);
u32 tmp;
struct ahci_port_priv *pp = ap->private_data;
/* clear IRQ */
tmp = readl(port_mmio + PORT_IRQ_STAT);
@ -1559,7 +1562,7 @@ static void ahci_thaw(struct ata_port *ap)
writel(1 << ap->port_no, mmio + HOST_IRQ_STAT);
/* turn IRQ back on */
writel(DEF_PORT_IRQ, port_mmio + PORT_IRQ_MASK);
writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
}
static void ahci_error_handler(struct ata_port *ap)
@ -1713,6 +1716,12 @@ static int ahci_port_start(struct ata_port *ap)
pp->cmd_tbl = mem;
pp->cmd_tbl_dma = mem_dma;
/*
* Save off initial list of interrupts to be enabled.
* This could be changed later
*/
pp->intr_mask = DEF_PORT_IRQ;
ap->private_data = pp;
/* engage engines, captain */