From be69459a8027787b63e7541d53d1ee86ec9c5056 Mon Sep 17 00:00:00 2001 From: Imre Deak Date: Tue, 15 Dec 2015 20:10:38 +0200 Subject: [PATCH] drm/i915: check that we are in an RPM atomic section in GGTT PTE updaters The device should be on for the whole duration of the update, so check for this. v2: - use the existing dev_priv directly everywhere (Ville) v3: - check also that we are in an RPM atomic section (Chris) - add the assert to i915_ggtt_insert_entries/clear_range too (Chris) Signed-off-by: Imre Deak Reviewed-by: Chris Wilson Link: http://patchwork.freedesktop.org/patch/msgid/1450203038-5150-11-git-send-email-imre.deak@intel.com --- drivers/gpu/drm/i915/i915_gem_gtt.c | 33 +++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index 7cfa1b9b3b96..c14b8f8d0c87 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -2351,6 +2351,9 @@ static void gen8_ggtt_insert_entries(struct i915_address_space *vm, int i = 0; struct sg_page_iter sg_iter; dma_addr_t addr = 0; /* shut up gcc */ + int rpm_atomic_seq; + + rpm_atomic_seq = assert_rpm_atomic_begin(dev_priv); for_each_sg_page(st->sgl, &sg_iter, st->nents, 0) { addr = sg_dma_address(sg_iter.sg) + @@ -2377,6 +2380,8 @@ static void gen8_ggtt_insert_entries(struct i915_address_space *vm, */ I915_WRITE(GFX_FLSH_CNTL_GEN6, GFX_FLSH_CNTL_EN); POSTING_READ(GFX_FLSH_CNTL_GEN6); + + assert_rpm_atomic_end(dev_priv, rpm_atomic_seq); } /* @@ -2397,6 +2402,9 @@ static void gen6_ggtt_insert_entries(struct i915_address_space *vm, int i = 0; struct sg_page_iter sg_iter; dma_addr_t addr = 0; + int rpm_atomic_seq; + + rpm_atomic_seq = assert_rpm_atomic_begin(dev_priv); for_each_sg_page(st->sgl, &sg_iter, st->nents, 0) { addr = sg_page_iter_dma_address(&sg_iter); @@ -2421,6 +2429,8 @@ static void gen6_ggtt_insert_entries(struct i915_address_space *vm, */ I915_WRITE(GFX_FLSH_CNTL_GEN6, GFX_FLSH_CNTL_EN); POSTING_READ(GFX_FLSH_CNTL_GEN6); + + assert_rpm_atomic_end(dev_priv, rpm_atomic_seq); } static void gen8_ggtt_clear_range(struct i915_address_space *vm, @@ -2435,6 +2445,9 @@ static void gen8_ggtt_clear_range(struct i915_address_space *vm, (gen8_pte_t __iomem *) dev_priv->gtt.gsm + first_entry; const int max_entries = gtt_total_entries(dev_priv->gtt) - first_entry; int i; + int rpm_atomic_seq; + + rpm_atomic_seq = assert_rpm_atomic_begin(dev_priv); if (WARN(num_entries > max_entries, "First entry = %d; Num entries = %d (max=%d)\n", @@ -2447,6 +2460,8 @@ static void gen8_ggtt_clear_range(struct i915_address_space *vm, for (i = 0; i < num_entries; i++) gen8_set_pte(>t_base[i], scratch_pte); readl(gtt_base); + + assert_rpm_atomic_end(dev_priv, rpm_atomic_seq); } static void gen6_ggtt_clear_range(struct i915_address_space *vm, @@ -2461,6 +2476,9 @@ static void gen6_ggtt_clear_range(struct i915_address_space *vm, (gen6_pte_t __iomem *) dev_priv->gtt.gsm + first_entry; const int max_entries = gtt_total_entries(dev_priv->gtt) - first_entry; int i; + int rpm_atomic_seq; + + rpm_atomic_seq = assert_rpm_atomic_begin(dev_priv); if (WARN(num_entries > max_entries, "First entry = %d; Num entries = %d (max=%d)\n", @@ -2473,6 +2491,8 @@ static void gen6_ggtt_clear_range(struct i915_address_space *vm, for (i = 0; i < num_entries; i++) iowrite32(scratch_pte, >t_base[i]); readl(gtt_base); + + assert_rpm_atomic_end(dev_priv, rpm_atomic_seq); } static void i915_ggtt_insert_entries(struct i915_address_space *vm, @@ -2480,11 +2500,17 @@ static void i915_ggtt_insert_entries(struct i915_address_space *vm, uint64_t start, enum i915_cache_level cache_level, u32 unused) { + struct drm_i915_private *dev_priv = vm->dev->dev_private; unsigned int flags = (cache_level == I915_CACHE_NONE) ? AGP_USER_MEMORY : AGP_USER_CACHED_MEMORY; + int rpm_atomic_seq; + + rpm_atomic_seq = assert_rpm_atomic_begin(dev_priv); intel_gtt_insert_sg_entries(pages, start >> PAGE_SHIFT, flags); + assert_rpm_atomic_end(dev_priv, rpm_atomic_seq); + } static void i915_ggtt_clear_range(struct i915_address_space *vm, @@ -2492,9 +2518,16 @@ static void i915_ggtt_clear_range(struct i915_address_space *vm, uint64_t length, bool unused) { + struct drm_i915_private *dev_priv = vm->dev->dev_private; unsigned first_entry = start >> PAGE_SHIFT; unsigned num_entries = length >> PAGE_SHIFT; + int rpm_atomic_seq; + + rpm_atomic_seq = assert_rpm_atomic_begin(dev_priv); + intel_gtt_clear_range(first_entry, num_entries); + + assert_rpm_atomic_end(dev_priv, rpm_atomic_seq); } static int ggtt_bind_vma(struct i915_vma *vma, -- 2.20.1