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sound/radeon: Move 64-bit MSI quirk from arch to driver 

A number of radeon cards have a HW limitation causing them to be
unable to generate the full 64-bit of address bits for MSIs. This
breaks MSIs on some platforms such as POWER machines.

We used to have a powerpc specific quirk to address that on a
single card, but this doesn't scale very well, this is better
put under control of the drivers who know precisely what a given
HW revision can do.

We now have a generic quirk in the PCI code. We should set it
appropriately for all radeon's from the audio driver.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
CC: <stable@vger.kernel.org>
This commit is contained in:
Benjamin Herrenschmidt 2014-11-24 14:17:08 +11:00
parent 91ed6fd2c3
commit db79afa1e5
2 changed files with 9 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
sound/pci/hda/hda_intel.c
View File

@ -298,7 +298,8 @@ enum {
/* quirks for ATI/AMD HDMI */
#define AZX_DCAPS_PRESET_ATI_HDMI \
(AZX_DCAPS_NO_TCSEL | AZX_DCAPS_SYNC_WRITE | AZX_DCAPS_POSFIX_LPIB)
(AZX_DCAPS_NO_TCSEL | AZX_DCAPS_SYNC_WRITE | AZX_DCAPS_POSFIX_LPIB|\
AZX_DCAPS_NO_MSI64)
/* quirks for Nvidia */
#define AZX_DCAPS_PRESET_NVIDIA \
@ -1510,9 +1511,14 @@ static int azx_first_init(struct azx *chip)
return -ENXIO;
}
if (chip->msi)
if (chip->msi) {
if (chip->driver_caps & AZX_DCAPS_NO_MSI64) {
dev_dbg(card->dev, "Disabling 64bit MSI\n");
pci->no_64bit_msi = true;
}
if (pci_enable_msi(pci) < 0)
chip->msi = 0;
}
if (azx_acquire_irq(chip, 0) < 0)
return -EBUSY;

1
sound/pci/hda/hda_priv.h
View File

@ -171,6 +171,7 @@ enum { SDI0, SDI1, SDI2, SDI3, SDO0, SDO1, SDO2, SDO3 };
#define AZX_DCAPS_PM_RUNTIME (1 << 26) /* runtime PM support */
#define AZX_DCAPS_I915_POWERWELL (1 << 27) /* HSW i915 powerwell support */
#define AZX_DCAPS_CORBRP_SELF_CLEAR (1 << 28) /* CORBRP clears itself after reset */
#define AZX_DCAPS_NO_MSI64 (1 << 29) /* Stick to 32-bit MSIs */
/* HD Audio class code */
#define PCI_CLASS_MULTIMEDIA_HD_AUDIO 0x0403