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drm/radeon/kms: vram sizing on certain r100 chips needs workaround.

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If an rn50/r100/m6/m7 GPU has < 64MB RAM, i.e. 8/16/32, the
aperture used to calculate the MC_FB_LOCATION needs to be worked
out from the CONFIG_APER_SIZE register, and not the actual vram size.

TTM VRAM size was also being initialised wrong, use actual vram size
to initialise it.

Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie
2009-07-21 20:39:30 +10:00
parent 664f865902
commit 7a50f01a4a
12 changed files with 56 additions and 42 deletions
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20
drivers/gpu/drm/radeon/radeon_device.c
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@@ -121,7 +121,7 @@ int radeon_mc_setup(struct radeon_device *rdev)
if (rdev->mc.vram_location != 0xFFFFFFFFUL) {
/* vram location was already setup try to put gtt after
* if it fits */
tmp = rdev->mc.vram_location + rdev->mc.vram_size;
tmp = rdev->mc.vram_location + rdev->mc.mc_vram_size;
tmp = (tmp + rdev->mc.gtt_size - 1) & ~(rdev->mc.gtt_size - 1);
if ((0xFFFFFFFFUL - tmp) >= rdev->mc.gtt_size) {
rdev->mc.gtt_location = tmp;
@@ -136,13 +136,13 @@ int radeon_mc_setup(struct radeon_device *rdev)
} else if (rdev->mc.gtt_location != 0xFFFFFFFFUL) {
/* gtt location was already setup try to put vram before
* if it fits */
if (rdev->mc.vram_size < rdev->mc.gtt_location) {
if (rdev->mc.mc_vram_size < rdev->mc.gtt_location) {
rdev->mc.vram_location = 0;
} else {
tmp = rdev->mc.gtt_location + rdev->mc.gtt_size;
tmp += (rdev->mc.vram_size - 1);
tmp &= ~(rdev->mc.vram_size - 1);
if ((0xFFFFFFFFUL - tmp) >= rdev->mc.vram_size) {
tmp += (rdev->mc.mc_vram_size - 1);
tmp &= ~(rdev->mc.mc_vram_size - 1);
if ((0xFFFFFFFFUL - tmp) >= rdev->mc.mc_vram_size) {
rdev->mc.vram_location = tmp;
} else {
printk(KERN_ERR "[drm] vram too big to fit "
@@ -152,12 +152,14 @@ int radeon_mc_setup(struct radeon_device *rdev)
}
} else {
rdev->mc.vram_location = 0;
rdev->mc.gtt_location = rdev->mc.vram_size;
rdev->mc.gtt_location = rdev->mc.mc_vram_size;
}
DRM_INFO("radeon: VRAM %uM\n", rdev->mc.vram_size >> 20);
DRM_INFO("radeon: VRAM %uM\n", rdev->mc.real_vram_size >> 20);
DRM_INFO("radeon: VRAM from 0x%08X to 0x%08X\n",
rdev->mc.vram_location,
rdev->mc.vram_location + rdev->mc.vram_size - 1);
rdev->mc.vram_location + rdev->mc.mc_vram_size - 1);
if (rdev->mc.real_vram_size != rdev->mc.mc_vram_size)
DRM_INFO("radeon: VRAM less than aperture workaround enabled\n");
DRM_INFO("radeon: GTT %uM\n", rdev->mc.gtt_size >> 20);
DRM_INFO("radeon: GTT from 0x%08X to 0x%08X\n",
rdev->mc.gtt_location,
@@ -573,7 +575,7 @@ int radeon_device_init(struct radeon_device *rdev,
rdev->mc.vram_mtrr = mtrr_add(rdev->mc.aper_base, rdev->mc.aper_size,
MTRR_TYPE_WRCOMB, 1);
DRM_INFO("Detected VRAM RAM=%uM, BAR=%uM\n",
rdev->mc.vram_size >> 20,
rdev->mc.real_vram_size >> 20,
(unsigned)rdev->mc.aper_size >> 20);
DRM_INFO("RAM width %dbits %cDR\n",
rdev->mc.vram_width, rdev->mc.vram_is_ddr ? 'D' : 'S');