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radeon/kms: fix powerpc/rn50 untiled behaviour.

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Installing 2.6.34 on a Power5/rn50 combo machine, X showed buggy sw rendering,
enabling tiling in the DDX fixed it. Investigation showed that a further /16
was needed in the untiled case on this chipset. Need further investigations
on what other chips this could affect, possibly rv100->rv280.

Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie 2010-06-11 14:40:16 +10:00
parent 1ab064de4f
commit f5c5f040b5
1 changed files with 14 additions and 6 deletions
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20
drivers/gpu/drm/radeon/r100.c
View file

@ -2604,12 +2604,6 @@ int r100_set_surface_reg(struct radeon_device *rdev, int reg,
int surf_index = reg * 16;
int flags = 0;
/* r100/r200 divide by 16 */
if (rdev->family < CHIP_R300)
flags = pitch / 16;
else
flags = pitch / 8;
if (rdev->family <= CHIP_RS200) {
if ((tiling_flags & (RADEON_TILING_MACRO|RADEON_TILING_MICRO))
== (RADEON_TILING_MACRO|RADEON_TILING_MICRO))
@ -2633,6 +2627,20 @@ int r100_set_surface_reg(struct radeon_device *rdev, int reg,
if (tiling_flags & RADEON_TILING_SWAP_32BIT)
flags |= RADEON_SURF_AP0_SWP_32BPP | RADEON_SURF_AP1_SWP_32BPP;
/* when we aren't tiling the pitch seems to needs to be furtherdivided down. - tested on power5 + rn50 server */
if (tiling_flags & (RADEON_TILING_SWAP_16BIT | RADEON_TILING_SWAP_32BIT)) {
if (!(tiling_flags & (RADEON_TILING_MACRO | RADEON_TILING_MICRO)))
if (ASIC_IS_RN50(rdev))
pitch /= 16;
}
/* r100/r200 divide by 16 */
if (rdev->family < CHIP_R300)
flags |= pitch / 16;
else
flags |= pitch / 8;
DRM_DEBUG("writing surface %d %d %x %x\n", reg, flags, offset, offset+obj_size-1);
WREG32(RADEON_SURFACE0_INFO + surf_index, flags);
WREG32(RADEON_SURFACE0_LOWER_BOUND + surf_index, offset);