diff options
| -rw-r--r-- | drivers/gpu/drm/i915/i915_dma.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.c | 7 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem.c | 39 |
4 files changed, 49 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 039fbf4..40bfafa 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -1196,7 +1196,7 @@ static int i915_load_gem_init(struct drm_device *dev) /* Basic memrange allocator for stolen space */ drm_mm_init(&dev_priv->mm.stolen, 0, prealloc_size); - if (HAS_ALIASING_PPGTT(dev)) { + if (i915_enable_ppgtt && HAS_ALIASING_PPGTT(dev)) { /* PPGTT pdes are stolen from global gtt ptes, so shrink the * aperture accordingly when using aliasing ppgtt. */ gtt_size -= I915_PPGTT_PD_ENTRIES*PAGE_SIZE; diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 12ddf47..d92c92d 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -103,6 +103,11 @@ MODULE_PARM_DESC(enable_hangcheck, "WARNING: Disabling this can cause system wide hangs. " "(default: true)"); +bool i915_enable_ppgtt __read_mostly = 1; +module_param_named(i915_enable_ppgtt, i915_enable_ppgtt, bool, 0600); +MODULE_PARM_DESC(i915_enable_ppgtt, + "Enable PPGTT (default: true)"); + static struct drm_driver driver; extern int intel_agp_enabled; @@ -694,6 +699,8 @@ int i915_reset(struct drm_device *dev, u8 flags) if (HAS_BLT(dev)) dev_priv->ring[BCS].init(&dev_priv->ring[BCS]); + i915_gem_init_ppgtt(dev); + mutex_unlock(&dev->struct_mutex); drm_irq_uninstall(dev); drm_mode_config_reset(dev); diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 35c8b53..45b609e 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -1032,6 +1032,7 @@ extern int i915_vbt_sdvo_panel_type __read_mostly; extern int i915_enable_rc6 __read_mostly; extern int i915_enable_fbc __read_mostly; extern bool i915_enable_hangcheck __read_mostly; +extern bool i915_enable_ppgtt __read_mostly; extern int i915_suspend(struct drm_device *dev, pm_message_t state); extern int i915_resume(struct drm_device *dev); @@ -1210,6 +1211,7 @@ int __must_check i915_gem_object_set_domain(struct drm_i915_gem_object *obj, int __must_check i915_gem_object_finish_gpu(struct drm_i915_gem_object *obj); int __must_check i915_gem_init_hw(struct drm_device *dev); void i915_gem_init_swizzling(struct drm_device *dev); +void i915_gem_init_ppgtt(struct drm_device *dev); void i915_gem_cleanup_ringbuffer(struct drm_device *dev); void i915_gem_do_init(struct drm_device *dev, unsigned long start, diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 5909299..f1193b1 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -3712,6 +3712,43 @@ void i915_gem_init_swizzling(struct drm_device *dev) else I915_WRITE(ARB_MODE, ARB_MODE_ENABLE(ARB_MODE_SWIZZLE_IVB)); } + +void i915_gem_init_ppgtt(struct drm_device *dev) +{ + drm_i915_private_t *dev_priv = dev->dev_private; + uint32_t pd_offset; + struct intel_ring_buffer *ring; + int i; + + if (!dev_priv->mm.aliasing_ppgtt) + return; + + pd_offset = dev_priv->mm.aliasing_ppgtt->pd_offset; + pd_offset /= 64; /* in cachelines, */ + pd_offset <<= 16; + + if (INTEL_INFO(dev)->gen == 6) { + uint32_t ecochk = I915_READ(GAM_ECOCHK); + I915_WRITE(GAM_ECOCHK, ecochk | ECOCHK_SNB_BIT | + ECOCHK_PPGTT_CACHE64B); + I915_WRITE(GFX_MODE, GFX_MODE_ENABLE(GFX_PPGTT_ENABLE)); + } else if (INTEL_INFO(dev)->gen >= 7) { + I915_WRITE(GAM_ECOCHK, ECOCHK_PPGTT_CACHE64B); + /* GFX_MODE is per-ring on gen7+ */ + } + + for (i = 0; i < I915_NUM_RINGS; i++) { + ring = &dev_priv->ring[i]; + + if (INTEL_INFO(dev)->gen >= 7) + I915_WRITE(RING_MODE_GEN7(ring), + GFX_MODE_ENABLE(GFX_PPGTT_ENABLE)); + + I915_WRITE(RING_PP_DIR_DCLV(ring), PP_DIR_DCLV_2G); + I915_WRITE(RING_PP_DIR_BASE(ring), pd_offset); + } +} + int i915_gem_init_hw(struct drm_device *dev) { @@ -3738,6 +3775,8 @@ i915_gem_init_hw(struct drm_device *dev) dev_priv->next_seqno = 1; + i915_gem_init_ppgtt(dev); + return 0; cleanup_bsd_ring: |
