Commit 3a9e3a51 authored Oct 23, 2007 by Tejun Heo Committed by Jeff Garzik Oct 23, 2007

jmicron: update quirk for JMB361/3/5/6



Set bits 0, 4, 5 and 7 of PCI configuration register 0x40 in the
quirk.  This has the following effects and is recommended by the
vendor.

* Force enable of IDE channels (used to be left alone as BIOS
  configured)

* Change initial phase behavior of PIO cycle such that the host pulls
  down the bus instead of tristating it.  Vendor recommends this
  setting.

The above settings are better for the current generation of
controllers and needed for the upcoming next generation.

Tested on JMB363.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Ethan Hsiao <ethanhsiao@jmicron.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

parent 0c173174

drivers/pci/quirks.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1230,7 +1230,7 @@ static void quirk_jmicron_ata(struct pci_dev *pdev)
		case PCI_DEVICE_ID_JMICRON_JMB363:
		/* Enable dual function mode, AHCI on fn 0, IDE fn1 */
		/* Set the class codes correctly and then direct IDE 0 */
		conf1 \|= 0x00C2A102; /* Set 1, 8, 13, 15, 17, 22, 23 */
		conf1 \|= 0x00C2A1B3; /* Set 0, 1, 4, 5, 7, 8, 13, 15, 17, 22, 23 */
		break;

		case PCI_DEVICE_ID_JMICRON_JMB368:

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