Attachment 144162 Details for Bug 218428 – patch for ATI SB600 legacy IDE mode

patch for ATI SB600 legacy IDE mode

linux-2.6.18-rhel5-b2-sb600-sata.patch (text/plain), 1.68 KB, created by Xin-Yun Liu (Wolke Liu) on 2006-12-21 06:17:27 UTC

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Creator: Xin-Yun Liu (Wolke Liu)

Created: 2006-12-21 06:17:27 UTC

Size: 1.68 KB

patch

obsolete

>--- drivers/pci/quirks.c.ori	2006-09-20 11:42:06.000000000 +0800
>+++ drivers/pci/quirks.c	2006-12-21 01:34:30.000000000 +0800
>@@ -795,6 +795,35 @@
> DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CYRIX,	PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master );
> 
> /*
>+ * ATI SB600 SATA controller supports 4 modes: Legacy IDE, Native IDE, AHCI 
>+ * and RAID. 
>+ * IDE modes are used for compatibility with some old OS without AHCI driver, 
>+ * but now they are not necessary for Linux since the kernel has supported 
>+ * AHCI.
>+ * Some BIOS set Legacy IDE as SB600 SATA's default mode, but the AHCI driver 
>+ * cannot run in Legacy IDE.
>+ * So, we should set the controller back to AHCI mode if it has been set as IDE
>+ * by BIOS.
>+ */
>+static void __devinit quirk_sb600_sata(struct pci_dev *pdev)
>+{
>+	if ((pdev->class >> 8) == PCI_CLASS_STORAGE_IDE) 
>+	{
>+		u8 tmp;
>+
>+		pci_read_config_byte(pdev, 0x40, &tmp);
>+		pci_write_config_byte(pdev, 0x40, tmp|1);
>+		pci_write_config_byte(pdev, 0x9, 1);
>+		pci_write_config_byte(pdev, 0xa, 6);
>+		pci_write_config_byte(pdev, 0x40, tmp);
>+		
>+		pdev->class = 0x010601;
>+	}
>+}
>+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_sb600_sata);
>+
>+
>+/*
>  * As per PCI spec, ignore base address registers 0-3 of the IDE controllers
>  * running in Compatible mode (bits 0 and 2 in the ProgIf for primary and
>  * secondary channels respectively). If the device reports Compatible mode
>@@ -843,7 +872,6 @@
>               first_bar, last_bar, pci_name(dev));
> }
> DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, quirk_ide_bases);
>-
> /*
>  *	Ensure C0 rev restreaming is off. This is normally done by
>  *	the BIOS but in the odd case it is not the results are corruption

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Attachments on bug 218428: 144162