Attachment 155117 Details for Bug 226947 – RHEL4.6 32-bit addressing

[patch] RHEL4.6 32-bit addressing

226947-2.patch (text/plain), 1.27 KB, created by Prarit Bhargava on 2007-05-21 17:20:35 UTC

(hide)

Description:

Filename:

MIME Type:

Creator: Prarit Bhargava

Created: 2007-05-21 17:20:35 UTC

Size: 1.27 KB

patch

obsolete

>--- linux-2.6.9.orig/drivers/ata/ahci.c	2007-05-21 11:50:27.000000000 -0400
>+++ linux-2.6.9/drivers/ata/ahci.c	2007-05-21 11:50:38.000000000 -0400
>@@ -174,6 +174,7 @@ enum {
> 	AHCI_FLAG_IGN_IRQ_IF_ERR	= (1 << 25), /* ignore IRQ_IF_ERR */
> 	AHCI_FLAG_HONOR_PI		= (1 << 26), /* honor PORTS_IMPL */
> 	AHCI_FLAG_IGN_SERR_INTERNAL	= (1 << 27), /* ignore SERR_INTERNAL */
>+	AHCI_FLAG_32BIT_ONLY		= (1 << 28), /* force 32bit */
> };
> 
> struct ahci_cmd_hdr {
>@@ -359,7 +360,8 @@ static const struct ata_port_info ahci_p
> 		.flags		= ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
> 				  ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA |
> 				  ATA_FLAG_SKIP_D2H_BSY |
>-				  AHCI_FLAG_IGN_SERR_INTERNAL,
>+				  AHCI_FLAG_IGN_SERR_INTERNAL |
>+				  AHCI_FLAG_32BIT_ONLY,
> 		.pio_mask	= 0x1f, /* pio0-4 */
> 		.udma_mask	= 0x7f, /* udma0-6 ; FIXME */
> 		.port_ops	= &ahci_ops,
>@@ -1549,6 +1551,12 @@ static int ahci_host_init(struct ata_pro
> 		probe_ent->n_ports = cap_n_ports;
> 
> 	using_dac = hpriv->cap & HOST_CAP_64;
>+	if (using_dac && (probe_ent->port_flags & AHCI_FLAG_32BIT_ONLY)) {
>+		dev_printk(KERN_INFO, &pdev->dev,
>+			   "controller can't do 64bit DMA, forcing 32bit\n");
>+		using_dac = 0;
>+	}
>+
> 	if (using_dac &&
> 	    !pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
> 		rc = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);

Actions: View | Diff

Attachments on bug 226947: 147192 | 153804 | 154657 | 155117