On Fri, Apr 13, 2012 at 10:19 AM, Dave Airlie <airlied at gmail.com> wrote:
> From: Dave Airlie <airlied at redhat.com>
>
> My rv515 card is very flaky with msi enabled. Every so often it loses a rearm
> and never comes back, manually banging the rearm brings it back.
>
> Signed-off-by: Dave Airlie <airlied at redhat.com>
Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
> ---
> ?drivers/gpu/drm/radeon/radeon_irq_kms.c | ? ?6 ++++++
> ?1 files changed, 6 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/gpu/drm/radeon/radeon_irq_kms.c
> b/drivers/gpu/drm/radeon/radeon_irq_kms.c
> index 66d5fe1..65060b7 100644
> --- a/drivers/gpu/drm/radeon/radeon_irq_kms.c
> +++ b/drivers/gpu/drm/radeon/radeon_irq_kms.c
> @@ -147,6 +147,12 @@ static bool radeon_msi_ok(struct radeon_device *rdev)
> ? ? ? ? ? ?(rdev->pdev->subsystem_device == 0x01fd))
> ? ? ? ? ? ? ? ?return true;
>
> + ? ? ? /* RV515 seems to have MSI issues where it loses
> + ? ? ? ?* MSI rearms occasionally. This leads to lockups and freezes.
> + ? ? ? ?* disable it by default.
> + ? ? ? ?*/
> + ? ? ? if (rdev->family == CHIP_RV515)
> + ? ? ? ? ? ? ? return false;
> ? ? ? ?if (rdev->flags & RADEON_IS_IGP) {
> ? ? ? ? ? ? ? ?/* APUs work fine with MSIs */
> ? ? ? ? ? ? ? ?if (rdev->family >= CHIP_PALM)
> --
> 1.7.7.6
>
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