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author | Paulo Zanoni <paulo.r.zanoni@intel.com> | 2015-07-02 19:25:08 -0300 |
---|---|---|
committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-07-06 14:33:32 +0200 |
commit | fc786728ee8acc76e22769af3b2df67b94cd49b6 (patch) | |
tree | 2f03158bdeef508d656a0d7aaf3bec6d4b8a530d /drivers/gpu/drm/i915/i915_gem_stolen.c | |
parent | d713fd4976f2838ca2ebccdc187256edb46bd48e (diff) | |
download | op-kernel-dev-fc786728ee8acc76e22769af3b2df67b94cd49b6.zip op-kernel-dev-fc786728ee8acc76e22769af3b2df67b94cd49b6.tar.gz |
drm/i915: move FBC code out of i915_gem_stolen.c
With the abstractions created by the last patch, we can move this code
and the only thing inside intel_fbc.c that knows about dev_priv->mm is
the code that reads stolen_base.
We also had to move a call to i915_gem_stolen_cleanup_compression()
- now called intel_fbc_cleanup_cfb() - outside i915_gem_stolen.c.
v2:
- Rebase after the remove_node() changes on the previous patch.
Requested-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_stolen.c')
-rw-r--r-- | drivers/gpu/drm/i915/i915_gem_stolen.c | 127 |
1 files changed, 0 insertions, 127 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_stolen.c b/drivers/gpu/drm/i915/i915_gem_stolen.c index d811b14..d2d556c 100644 --- a/drivers/gpu/drm/i915/i915_gem_stolen.c +++ b/drivers/gpu/drm/i915/i915_gem_stolen.c @@ -168,132 +168,6 @@ static unsigned long i915_stolen_to_physical(struct drm_device *dev) return base; } -static int find_compression_threshold(struct drm_device *dev, - struct drm_mm_node *node, - int size, - int fb_cpp) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - int compression_threshold = 1; - int ret; - - /* HACK: This code depends on what we will do in *_enable_fbc. If that - * code changes, this code needs to change as well. - * - * The enable_fbc code will attempt to use one of our 2 compression - * thresholds, therefore, in that case, we only have 1 resort. - */ - - /* Try to over-allocate to reduce reallocations and fragmentation. */ - ret = i915_gem_stolen_insert_node(dev_priv, node, size <<= 1, 4096); - if (ret == 0) - return compression_threshold; - -again: - /* HW's ability to limit the CFB is 1:4 */ - if (compression_threshold > 4 || - (fb_cpp == 2 && compression_threshold == 2)) - return 0; - - ret = i915_gem_stolen_insert_node(dev_priv, node, size >>= 1, 4096); - if (ret && INTEL_INFO(dev)->gen <= 4) { - return 0; - } else if (ret) { - compression_threshold <<= 1; - goto again; - } else { - return compression_threshold; - } -} - -static int i915_setup_compression(struct drm_device *dev, int size, int fb_cpp) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - struct drm_mm_node *uninitialized_var(compressed_llb); - int ret; - - ret = find_compression_threshold(dev, &dev_priv->fbc.compressed_fb, - size, fb_cpp); - if (!ret) - goto err_llb; - else if (ret > 1) { - DRM_INFO("Reducing the compressed framebuffer size. This may lead to less power savings than a non-reduced-size. Try to increase stolen memory size if available in BIOS.\n"); - - } - - dev_priv->fbc.threshold = ret; - - if (INTEL_INFO(dev_priv)->gen >= 5) - I915_WRITE(ILK_DPFC_CB_BASE, dev_priv->fbc.compressed_fb.start); - else if (IS_GM45(dev)) { - I915_WRITE(DPFC_CB_BASE, dev_priv->fbc.compressed_fb.start); - } else { - compressed_llb = kzalloc(sizeof(*compressed_llb), GFP_KERNEL); - if (!compressed_llb) - goto err_fb; - - ret = i915_gem_stolen_insert_node(dev_priv, compressed_llb, - 4096, 4096); - if (ret) - goto err_fb; - - dev_priv->fbc.compressed_llb = compressed_llb; - - I915_WRITE(FBC_CFB_BASE, - dev_priv->mm.stolen_base + dev_priv->fbc.compressed_fb.start); - I915_WRITE(FBC_LL_BASE, - dev_priv->mm.stolen_base + compressed_llb->start); - } - - dev_priv->fbc.uncompressed_size = size; - - DRM_DEBUG_KMS("reserved %d bytes of contiguous stolen space for FBC\n", - size); - - return 0; - -err_fb: - kfree(compressed_llb); - i915_gem_stolen_remove_node(dev_priv, &dev_priv->fbc.compressed_fb); -err_llb: - pr_info_once("drm: not enough stolen space for compressed buffer (need %d more bytes), disabling. Hint: you may be able to increase stolen memory size in the BIOS to avoid this.\n", size); - return -ENOSPC; -} - -int i915_gem_stolen_setup_compression(struct drm_device *dev, int size, int fb_cpp) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - - if (!drm_mm_initialized(&dev_priv->mm.stolen)) - return -ENODEV; - - if (size <= dev_priv->fbc.uncompressed_size) - return 0; - - /* Release any current block */ - i915_gem_stolen_cleanup_compression(dev); - - return i915_setup_compression(dev, size, fb_cpp); -} - -void i915_gem_stolen_cleanup_compression(struct drm_device *dev) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - - if (dev_priv->fbc.uncompressed_size == 0) - return; - - i915_gem_stolen_remove_node(dev_priv, &dev_priv->fbc.compressed_fb); - - if (dev_priv->fbc.compressed_llb) { - i915_gem_stolen_remove_node(dev_priv, - dev_priv->fbc.compressed_llb); - kfree(dev_priv->fbc.compressed_llb); - } - - dev_priv->fbc.uncompressed_size = 0; -} - void i915_gem_cleanup_stolen(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; @@ -301,7 +175,6 @@ void i915_gem_cleanup_stolen(struct drm_device *dev) if (!drm_mm_initialized(&dev_priv->mm.stolen)) return; - i915_gem_stolen_cleanup_compression(dev); drm_mm_takedown(&dev_priv->mm.stolen); } |