From: Paulo Zanoni Date: Thu, 2 Jul 2015 22:25:08 +0000 (-0300) Subject: drm/i915: move FBC code out of i915_gem_stolen.c X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=fc786728ee8acc76e22769af3b2df67b94cd49b6;p=linux-beck.git 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 Signed-off-by: Paulo Zanoni Reviewed-by: Chris Wilson Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index a42f16592433..066c34c3298a 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -1123,6 +1123,7 @@ int i915_driver_unload(struct drm_device *dev) i915_gem_cleanup_ringbuffer(dev); i915_gem_context_fini(dev); mutex_unlock(&dev->struct_mutex); + intel_fbc_cleanup_cfb(dev); i915_gem_cleanup_stolen(dev); intel_csr_ucode_fini(dev); diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 3e746ccf17ff..2b78686e23d9 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -3118,8 +3118,6 @@ int i915_gem_stolen_insert_node(struct drm_i915_private *dev_priv, void i915_gem_stolen_remove_node(struct drm_i915_private *dev_priv, struct drm_mm_node *node); int i915_gem_init_stolen(struct drm_device *dev); -int i915_gem_stolen_setup_compression(struct drm_device *dev, int size, int fb_cpp); -void i915_gem_stolen_cleanup_compression(struct drm_device *dev); void i915_gem_cleanup_stolen(struct drm_device *dev); struct drm_i915_gem_object * i915_gem_object_create_stolen(struct drm_device *dev, u32 size); diff --git a/drivers/gpu/drm/i915/i915_gem_stolen.c b/drivers/gpu/drm/i915/i915_gem_stolen.c index d811b148817f..d2d556c69175 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); } diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 3f0a89060820..82abbfae4e23 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -1258,6 +1258,7 @@ void intel_fbc_invalidate(struct drm_i915_private *dev_priv, void intel_fbc_flush(struct drm_i915_private *dev_priv, unsigned int frontbuffer_bits); const char *intel_no_fbc_reason_str(enum no_fbc_reason reason); +void intel_fbc_cleanup_cfb(struct drm_device *dev); /* intel_hdmi.c */ void intel_hdmi_init(struct drm_device *dev, int hdmi_reg, enum port port); diff --git a/drivers/gpu/drm/i915/intel_fbc.c b/drivers/gpu/drm/i915/intel_fbc.c index 9e55b9badb4b..55711b452fbf 100644 --- a/drivers/gpu/drm/i915/intel_fbc.c +++ b/drivers/gpu/drm/i915/intel_fbc.c @@ -515,6 +515,129 @@ static struct drm_crtc *intel_fbc_find_crtc(struct drm_i915_private *dev_priv) return crtc; } +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 intel_fbc_alloc_cfb(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; +} + +void intel_fbc_cleanup_cfb(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; +} + +static int intel_fbc_setup_cfb(struct drm_device *dev, int size, int fb_cpp) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + + if (size <= dev_priv->fbc.uncompressed_size) + return 0; + + /* Release any current block */ + intel_fbc_cleanup_cfb(dev); + + return intel_fbc_alloc_cfb(dev, size, fb_cpp); +} + /** * intel_fbc_update - enable/disable FBC as needed * @dev: the drm_device @@ -624,8 +747,8 @@ void intel_fbc_update(struct drm_device *dev) if (in_dbg_master()) goto out_disable; - if (i915_gem_stolen_setup_compression(dev, obj->base.size, - drm_format_plane_cpp(fb->pixel_format, 0))) { + if (intel_fbc_setup_cfb(dev, obj->base.size, + drm_format_plane_cpp(fb->pixel_format, 0))) { set_no_fbc_reason(dev_priv, FBC_STOLEN_TOO_SMALL); goto out_disable; } @@ -678,7 +801,7 @@ out_disable: DRM_DEBUG_KMS("unsupported config, disabling FBC\n"); intel_fbc_disable(dev); } - i915_gem_stolen_cleanup_compression(dev); + intel_fbc_cleanup_cfb(dev); } void intel_fbc_invalidate(struct drm_i915_private *dev_priv,