Commit 83f2b963 authored by Tejun Heo's avatar Tejun Heo Committed by Jeff Garzik
Browse files

ahci: implement AHCI_HFLAG_NO_FPDMA_AA and update NV quirks 

It turns out different generations of MCPs have differing quirks.

* MCP 65-73 : FPDMA AA broken, lies about PMP support, forgets to report NCQ
* MCP 77-79 : FPDMA AA broken, lies about PMP support
* MCP 89    : FPDMA AA broken

Instead of turngin off FPDMA AA on all NVIDIAs, implement
HFLAG_NO_FPDMA_AA, define additional board IDs and apply necessary
quirks.

This fixes bko#15481 and the list of quirks is verified by Peer Chen.

  http://bugzilla.kernel.org/show_bug.cgi?id=15481



Signed-off-by: default avatarTejun Heo <tj@kernel.org>
Cc: Peer Chen <pchen@nvidia.com>
Signed-off-by: default avatarJeff Garzik <jgarzik@redhat.com>
parent ec569af8

drivers/ata/ahci.c

+28 −10
Original line number Diff line number Diff line
@@ -63,6 +63,8 @@ enum board_ids { 


	/* board IDs for specific chipsets in alphabetical order */

	board_ahci_mcp65,

	board_ahci_mcp77,

	board_ahci_mcp89,

	board_ahci_mv,

	board_ahci_sb600,

	board_ahci_sb700,	/* for SB700 and SB800 */
@@ -72,9 +74,7 @@ enum board_ids { 
	board_ahci_mcp_linux	= board_ahci_mcp65,

	board_ahci_mcp67	= board_ahci_mcp65,

	board_ahci_mcp73	= board_ahci_mcp65,

	board_ahci_mcp77	= board_ahci,

	board_ahci_mcp79	= board_ahci,

	board_ahci_mcp89	= board_ahci,

	board_ahci_mcp79	= board_ahci_mcp77,

};



static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
@@ -135,7 +135,24 @@ static const struct ata_port_info ahci_port_info[] = { 
	/* by chipsets */

	[board_ahci_mcp65] =

	{

		AHCI_HFLAGS	(AHCI_HFLAG_YES_NCQ),

		AHCI_HFLAGS	(AHCI_HFLAG_NO_FPDMA_AA | AHCI_HFLAG_NO_PMP |

				 AHCI_HFLAG_YES_NCQ),

		.flags		= AHCI_FLAG_COMMON,

		.pio_mask	= ATA_PIO4,

		.udma_mask	= ATA_UDMA6,

		.port_ops	= &ahci_ops,

	},

	[board_ahci_mcp77] =

	{

		AHCI_HFLAGS	(AHCI_HFLAG_NO_FPDMA_AA | AHCI_HFLAG_NO_PMP),

		.flags		= AHCI_FLAG_COMMON,

		.pio_mask	= ATA_PIO4,

		.udma_mask	= ATA_UDMA6,

		.port_ops	= &ahci_ops,

	},

	[board_ahci_mcp89] =

	{

		AHCI_HFLAGS	(AHCI_HFLAG_NO_FPDMA_AA),

		.flags		= AHCI_FLAG_COMMON,

		.pio_mask	= ATA_PIO4,

		.udma_mask	= ATA_UDMA6,
@@ -1103,12 +1120,13 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) 
	/* prepare host */

	if (hpriv->cap & HOST_CAP_NCQ) {

		pi.flags |= ATA_FLAG_NCQ;

		/* Auto-activate optimization is supposed to be supported on

		   all AHCI controllers indicating NCQ support, but it seems

		   to be broken at least on some NVIDIA MCP79 chipsets.

		   Until we get info on which NVIDIA chipsets don't have this

		   issue, if any, disable AA on all NVIDIA AHCIs. */

		if (pdev->vendor != PCI_VENDOR_ID_NVIDIA)

		/*

		 * Auto-activate optimization is supposed to be

		 * supported on all AHCI controllers indicating NCQ

		 * capability, but it seems to be broken on some

		 * chipsets including NVIDIAs.

		 */

		if (!(hpriv->flags & AHCI_HFLAG_NO_FPDMA_AA))

			pi.flags |= ATA_FLAG_FPDMA_AA;

	}

drivers/ata/ahci.h

+1 −0
Original line number Diff line number Diff line
@@ -208,6 +208,7 @@ enum { 
	AHCI_HFLAG_SRST_TOUT_IS_OFFLINE	= (1 << 11), /* treat SRST timeout as

							link offline */

	AHCI_HFLAG_NO_SNTF		= (1 << 12), /* no sntf */

	AHCI_HFLAG_NO_FPDMA_AA		= (1 << 13), /* no FPDMA AA */



	/* ap->flags bits */

CRA Git | Maintained and supported by SUSTech CRA and CCSE