lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

drm/i915: framebuffer compression for GM45+

Browse Source 
Add support for framebuffer compression on GM45 and above.  Removes
some unnecessary I915_HAS_FBC checks as well (this is now part of the
FBC display function).

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Jesse Barnes
2009-09-14 15:39:40 -07:00
committed by Eric Anholt
parent e70236a8d3
commit 74dff28223
4 changed files with 132 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

51
drivers/gpu/drm/i915/i915_dma.c
View File

@ -1119,34 +1119,47 @@ static void i915_setup_compression(struct drm_device *dev, int size)
return;
}
compressed_llb = drm_mm_search_free(&dev_priv->vram, 4096, 4096, 0);
if (!compressed_llb) {
i915_warn_stolen(dev);
return;
cfb_base = i915_gtt_to_phys(dev, compressed_fb->start);
if (!cfb_base) {
DRM_ERROR("failed to get stolen phys addr, disabling FBC\n");
drm_mm_put_block(compressed_fb);
}
compressed_llb = drm_mm_get_block(compressed_llb, 4096, 4096);
if (!compressed_llb) {
i915_warn_stolen(dev);
return;
if (!IS_GM45(dev)) {
compressed_llb = drm_mm_search_free(&dev_priv->vram, 4096,
4096, 0);
if (!compressed_llb) {
i915_warn_stolen(dev);
return;
}
compressed_llb = drm_mm_get_block(compressed_llb, 4096, 4096);
if (!compressed_llb) {
i915_warn_stolen(dev);
return;
}
ll_base = i915_gtt_to_phys(dev, compressed_llb->start);
if (!ll_base) {
DRM_ERROR("failed to get stolen phys addr, disabling FBC\n");
drm_mm_put_block(compressed_fb);
drm_mm_put_block(compressed_llb);
}
}
dev_priv->cfb_size = size;
cfb_base = i915_gtt_to_phys(dev, compressed_fb->start);
ll_base = i915_gtt_to_phys(dev, compressed_llb->start);
if (!cfb_base || !ll_base) {
DRM_ERROR("failed to get stolen phys addr, disabling FBC\n");
drm_mm_put_block(compressed_fb);
drm_mm_put_block(compressed_llb);
if (IS_GM45(dev)) {
g4x_disable_fbc(dev);
I915_WRITE(DPFC_CB_BASE, compressed_fb->start);
} else {
i8xx_disable_fbc(dev);
I915_WRITE(FBC_CFB_BASE, cfb_base);
I915_WRITE(FBC_LL_BASE, ll_base);
}
i8xx_disable_fbc(dev);
DRM_DEBUG("FBC base 0x%08lx, ll base 0x%08lx, size %dM\n", cfb_base,
ll_base, size >> 20);
I915_WRITE(FBC_CFB_BASE, cfb_base);
I915_WRITE(FBC_LL_BASE, ll_base);
}
static int i915_load_modeset_init(struct drm_device *dev,
@ -1194,7 +1207,7 @@ static int i915_load_modeset_init(struct drm_device *dev,
goto out;
/* Try to set up FBC with a reasonable compressed buffer size */
if (IS_MOBILE(dev) && (IS_I9XX(dev) || IS_I965G(dev)) &&
if (IS_MOBILE(dev) && (IS_I9XX(dev) || IS_I965G(dev) || IS_GM45(dev)) &&
i915_powersave) {
int cfb_size;