i915 open-coded logic that was essentially equivalent to the new drm_mtrr_{add,del}_wc.
Signed-off-by: Andy Lutomirski luto@amacapital.net --- drivers/gpu/drm/i915/i915_dma.c | 43 ++++++----------------------------------- 1 file changed, 6 insertions(+), 37 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 4fa6beb..0fc95ba 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -1393,29 +1393,6 @@ void i915_master_destroy(struct drm_device *dev, struct drm_master *master) master->driver_priv = NULL; }
-static void -i915_mtrr_setup(struct drm_i915_private *dev_priv, unsigned long base, - unsigned long size) -{ - dev_priv->mm.gtt_mtrr = -1; - -#if defined(CONFIG_X86_PAT) - if (cpu_has_pat) - return; -#endif - - /* Set up a WC MTRR for non-PAT systems. This is more common than - * one would think, because the kernel disables PAT on first - * generation Core chips because WC PAT gets overridden by a UC - * MTRR if present. Even if a UC MTRR isn't present. - */ - dev_priv->mm.gtt_mtrr = mtrr_add(base, size, MTRR_TYPE_WRCOMB, 1); - if (dev_priv->mm.gtt_mtrr < 0) { - DRM_INFO("MTRR allocation failed. Graphics " - "performance may suffer.\n"); - } -} - static void i915_kick_out_firmware_fb(struct drm_i915_private *dev_priv) { struct apertures_struct *ap; @@ -1552,8 +1529,8 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) goto out_rmmap; }
- i915_mtrr_setup(dev_priv, dev_priv->gtt.mappable_base, - aperture_size); + dev_priv->mm.gtt_mtrr = drm_mtrr_add_wc(dev_priv->gtt.mappable_base, + aperture_size);
/* The i915 workqueue is primarily used for batched retirement of * requests (and thus managing bo) once the task has been completed @@ -1656,12 +1633,8 @@ out_gem_unload: intel_teardown_mchbar(dev); destroy_workqueue(dev_priv->wq); out_mtrrfree: - if (dev_priv->mm.gtt_mtrr >= 0) { - mtrr_del(dev_priv->mm.gtt_mtrr, - dev_priv->gtt.mappable_base, - aperture_size); - dev_priv->mm.gtt_mtrr = -1; - } + drm_mtrr_del_wc(dev_priv->mm.gtt_mtrr); + dev_priv->mm.gtt_mtrr = -1; io_mapping_free(dev_priv->gtt.mappable); out_rmmap: pci_iounmap(dev->pdev, dev_priv->regs); @@ -1697,12 +1670,8 @@ int i915_driver_unload(struct drm_device *dev) cancel_delayed_work_sync(&dev_priv->mm.retire_work);
io_mapping_free(dev_priv->gtt.mappable); - if (dev_priv->mm.gtt_mtrr >= 0) { - mtrr_del(dev_priv->mm.gtt_mtrr, - dev_priv->gtt.mappable_base, - dev_priv->gtt.mappable_end); - dev_priv->mm.gtt_mtrr = -1; - } + drm_mtrr_del_wc(dev_priv->mm.gtt_mtrr); + dev_priv->mm.gtt_mtrr = -1;
acpi_video_unregister();