On Mon, Dec 19, 2011 at 9:16 AM, Dave Airlie <airlied@xxxxxxxxx> wrote:
> From: Dave Airlie <airlied@xxxxxxxxxx>
>
> This doesn't completely close the kexec hole for all drivers, but it fixes
> it for some cases, by enabling PCI bus mastering later.
>
> Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx>
> ---
> drivers/gpu/drm/radeon/evergreen.c | 2 ++
> drivers/gpu/drm/radeon/ni.c | 2 ++
> drivers/gpu/drm/radeon/r100.c | 10 ++++++++++
> drivers/gpu/drm/radeon/r300.c | 5 +----
> drivers/gpu/drm/radeon/r420.c | 4 ++--
> drivers/gpu/drm/radeon/r600.c | 2 ++
> drivers/gpu/drm/radeon/radeon_kms.c | 2 --
> drivers/gpu/drm/radeon/rv770.c | 2 ++
> 8 files changed, 21 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
> index 5d51035..bb01c04 100644
> --- a/drivers/gpu/drm/radeon/evergreen.c
> +++ b/drivers/gpu/drm/radeon/evergreen.c
> @@ -3001,6 +3001,8 @@ static int evergreen_startup(struct radeon_device *rdev)
> /* enable pcie gen2 link */
> evergreen_pcie_gen2_enable(rdev);
>
> + pci_set_master(rdev->pdev);
> +
> if (ASIC_IS_DCE5(rdev)) {
> if (!rdev->me_fw || !rdev->pfp_fw || !rdev->rlc_fw || !rdev->mc_fw) {
> r = ni_init_microcode(rdev);
> diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c
> index 1d1047a..60b4b9b 100644
> --- a/drivers/gpu/drm/radeon/ni.c
> +++ b/drivers/gpu/drm/radeon/ni.c
> @@ -1343,6 +1343,8 @@ static int cayman_startup(struct radeon_device *rdev)
> /* enable pcie gen2 link */
> evergreen_pcie_gen2_enable(rdev);
>
> + pci_set_master(rdev->pdev);
> +
> if (!rdev->me_fw || !rdev->pfp_fw || !rdev->rlc_fw || !rdev->mc_fw) {
> r = ni_init_microcode(rdev);
> if (r) {
> diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c
> index dcc5b3c..567924c 100644
> --- a/drivers/gpu/drm/radeon/r100.c
> +++ b/drivers/gpu/drm/radeon/r100.c
> @@ -596,6 +596,16 @@ int r100_pci_gart_init(struct radeon_device *rdev)
> void r100_enable_bm(struct radeon_device *rdev)
> {
> uint32_t tmp;
> +
> + pci_set_master(rdev->pdev);
> +
> + if (rdev->family == CHIP_R300 ||
> + rdev->family == CHIP_R350 ||
> + rdev->family == CHIP_RV350 ||
> + rdev->family == CHIP_R423 ||
> + rdev->family == CHIP_RV410)
> + return;
> +
The logic is reversed for some of these.
RADEON_BUS_CNTL.RADEON_BUS_MASTER_DIS only exists on AGP and RS4xx
chips. The logic should be:
/* bail early on PCIE asics */
if (rdev->family == CHIP_RV380 ||
rdev->family == CHIP_R423 ||
rdev->family == CHIP_RV410 ||
rdev->family >= CHIP_RS600)
return;
> /* Enable bus mastering */
> tmp = RREG32(RADEON_BUS_CNTL) & ~RADEON_BUS_MASTER_DIS;
> WREG32(RADEON_BUS_CNTL, tmp);
> diff --git a/drivers/gpu/drm/radeon/r300.c b/drivers/gpu/drm/radeon/r300.c
> index 400b26d..b1c171f 100644
> --- a/drivers/gpu/drm/radeon/r300.c
> +++ b/drivers/gpu/drm/radeon/r300.c
> @@ -1372,10 +1372,7 @@ static int r300_startup(struct radeon_device *rdev)
> return r;
> }
>
> - if (rdev->family == CHIP_R300 ||
> - rdev->family == CHIP_R350 ||
> - rdev->family == CHIP_RV350)
> - r100_enable_bm(rdev);
> + r100_enable_bm(rdev);
>
> if (rdev->flags & RADEON_IS_PCI) {
> r = r100_pci_gart_enable(rdev);
> diff --git a/drivers/gpu/drm/radeon/r420.c b/drivers/gpu/drm/radeon/r420.c
> index 417fab8..b9123d6 100644
> --- a/drivers/gpu/drm/radeon/r420.c
> +++ b/drivers/gpu/drm/radeon/r420.c
> @@ -400,8 +400,8 @@ int r420_init(struct radeon_device *rdev)
> if (r) {
> return r;
> }
> - if (rdev->family == CHIP_R420)
> - r100_enable_bm(rdev);
> +
> + r100_enable_bm(rdev);
>
> if (rdev->flags & RADEON_IS_PCIE) {
> r = rv370_pcie_gart_init(rdev);
> diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
> index 936d107..36c9b86 100644
> --- a/drivers/gpu/drm/radeon/r600.c
> +++ b/drivers/gpu/drm/radeon/r600.c
> @@ -2468,6 +2468,8 @@ int r600_startup(struct radeon_device *rdev)
> /* enable pcie gen2 link */
> r600_pcie_gen2_enable(rdev);
>
> + pci_set_master(rdev->pdev);
> +
> if (!rdev->me_fw || !rdev->pfp_fw || !rdev->rlc_fw) {
> r = r600_init_microcode(rdev);
> if (r) {
> diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c
> index 601b6bd..be2c122 100644
> --- a/drivers/gpu/drm/radeon/radeon_kms.c
> +++ b/drivers/gpu/drm/radeon/radeon_kms.c
> @@ -57,8 +57,6 @@ int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags)
> }
> dev->dev_private = (void *)rdev;
>
> - pci_set_master(dev->pdev);
> -
> /* update BUS flag */
> if (drm_pci_device_is_agp(dev)) {
> flags |= RADEON_IS_AGP;
> diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c
> index e4e2132..ac1b451 100644
> --- a/drivers/gpu/drm/radeon/rv770.c
> +++ b/drivers/gpu/drm/radeon/rv770.c
> @@ -1043,6 +1043,8 @@ static int rv770_startup(struct radeon_device *rdev)
> /* enable pcie gen2 link */
> rv770_pcie_gen2_enable(rdev);
>
> + pci_set_master(rdev->pdev);
> +
> if (!rdev->me_fw || !rdev->pfp_fw || !rdev->rlc_fw) {
> r = r600_init_microcode(rdev);
> if (r) {
> --
> 1.7.7.3
>
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