diff options
Diffstat (limited to 'meta/packages/linux/linux-moblin-2.6.27-rc1/0007_i915.Initialize_hardware_status_page_at_device_load_when_possible.patch')
| -rw-r--r-- | meta/packages/linux/linux-moblin-2.6.27-rc1/0007_i915.Initialize_hardware_status_page_at_device_load_when_possible.patch | 138 |
1 files changed, 0 insertions, 138 deletions
diff --git a/meta/packages/linux/linux-moblin-2.6.27-rc1/0007_i915.Initialize_hardware_status_page_at_device_load_when_possible.patch b/meta/packages/linux/linux-moblin-2.6.27-rc1/0007_i915.Initialize_hardware_status_page_at_device_load_when_possible.patch deleted file mode 100644 index cf646f01c..000000000 --- a/meta/packages/linux/linux-moblin-2.6.27-rc1/0007_i915.Initialize_hardware_status_page_at_device_load_when_possible.patch +++ /dev/null @@ -1,138 +0,0 @@ -From: Keith Packard <keithp@keithp.com> -Date: Wed, 30 Jul 2008 20:03:43 +0000 (-0700) -Subject: i915: Initialize hardware status page at device load when possible. -X-Git-Tag: v2.6.12-rc2 -X-Git-Url: http://gitweb.freedesktop.org/?p=users/anholt/anholt/linux-2.6.git;a=commitdiff;h=ddb354254f88965f5f057e67ef775fbb4b35fef8 - -i915: Initialize hardware status page at device load when possible. - -Some chips were unstable with repeated setup/teardown of the hardware status -page. - -Signed-off-by: Eric Anholt <eric@anholt.net> ---- - ---- a/drivers/gpu/drm/i915/i915_dma.c -+++ b/drivers/gpu/drm/i915/i915_dma.c -@@ -71,6 +71,52 @@ int i915_wait_ring(struct drm_device * d - return -EBUSY; - } - -+/** -+ * Sets up the hardware status page for devices that need a physical address -+ * in the register. -+ */ -+int i915_init_phys_hws(struct drm_device *dev) -+{ -+ drm_i915_private_t *dev_priv = dev->dev_private; -+ /* Program Hardware Status Page */ -+ dev_priv->status_page_dmah = -+ drm_pci_alloc(dev, PAGE_SIZE, PAGE_SIZE, 0xffffffff); -+ -+ if (!dev_priv->status_page_dmah) { -+ DRM_ERROR("Can not allocate hardware status page\n"); -+ return -ENOMEM; -+ } -+ dev_priv->hw_status_page = dev_priv->status_page_dmah->vaddr; -+ dev_priv->dma_status_page = dev_priv->status_page_dmah->busaddr; -+ -+ memset(dev_priv->hw_status_page, 0, PAGE_SIZE); -+ -+ I915_WRITE(HWS_PGA, dev_priv->dma_status_page); -+ DRM_DEBUG("Enabled hardware status page\n"); -+ return 0; -+} -+ -+/** -+ * Frees the hardware status page, whether it's a physical address or a virtual -+ * address set up by the X Server. -+ */ -+void i915_free_hws(struct drm_device *dev) -+{ -+ drm_i915_private_t *dev_priv = dev->dev_private; -+ if (dev_priv->status_page_dmah) { -+ drm_pci_free(dev, dev_priv->status_page_dmah); -+ dev_priv->status_page_dmah = NULL; -+ } -+ -+ if (dev_priv->status_gfx_addr) { -+ dev_priv->status_gfx_addr = 0; -+ drm_core_ioremapfree(&dev_priv->hws_map, dev); -+ } -+ -+ /* Need to rewrite hardware status page */ -+ I915_WRITE(HWS_PGA, 0x1ffff000); -+} -+ - void i915_kernel_lost_context(struct drm_device * dev) - { - drm_i915_private_t *dev_priv = dev->dev_private; -@@ -103,18 +149,9 @@ static int i915_dma_cleanup(struct drm_d - dev_priv->ring.map.size = 0; - } - -- if (dev_priv->status_page_dmah) { -- drm_pci_free(dev, dev_priv->status_page_dmah); -- dev_priv->status_page_dmah = NULL; -- /* Need to rewrite hardware status page */ -- I915_WRITE(HWS_PGA, 0x1ffff000); -- } -- -- if (dev_priv->status_gfx_addr) { -- dev_priv->status_gfx_addr = 0; -- drm_core_ioremapfree(&dev_priv->hws_map, dev); -- I915_WRITE(HWS_PGA, 0x1ffff000); -- } -+ /* Clear the HWS virtual address at teardown */ -+ if (I915_NEED_GFX_HWS(dev)) -+ i915_free_hws(dev); - - return 0; - } -@@ -165,23 +202,6 @@ static int i915_initialize(struct drm_de - */ - dev_priv->allow_batchbuffer = 1; - -- /* Program Hardware Status Page */ -- if (!I915_NEED_GFX_HWS(dev)) { -- dev_priv->status_page_dmah = -- drm_pci_alloc(dev, PAGE_SIZE, PAGE_SIZE, 0xffffffff); -- -- if (!dev_priv->status_page_dmah) { -- i915_dma_cleanup(dev); -- DRM_ERROR("Can not allocate hardware status page\n"); -- return -ENOMEM; -- } -- dev_priv->hw_status_page = dev_priv->status_page_dmah->vaddr; -- dev_priv->dma_status_page = dev_priv->status_page_dmah->busaddr; -- -- memset(dev_priv->hw_status_page, 0, PAGE_SIZE); -- I915_WRITE(HWS_PGA, dev_priv->dma_status_page); -- } -- DRM_DEBUG("Enabled hardware status page\n"); - return 0; - } - -@@ -773,6 +793,12 @@ int i915_driver_load(struct drm_device * - _DRM_KERNEL | _DRM_DRIVER, - &dev_priv->mmio_map); - -+ /* Init HWS */ -+ if (!I915_NEED_GFX_HWS(dev)) { -+ ret = i915_init_phys_hws(dev); -+ if (ret != 0) -+ return ret; -+ } - - /* On the 945G/GM, the chipset reports the MSI capability on the - * integrated graphics even though the support isn't actually there -@@ -796,6 +822,8 @@ int i915_driver_unload(struct drm_device - if (dev->pdev->msi_enabled) - pci_disable_msi(dev->pdev); - -+ i915_free_hws(dev); -+ - if (dev_priv->mmio_map) - drm_rmmap(dev, dev_priv->mmio_map); - - |