drm/i915/gtt: Avoid calling non-existent allocate_va_range

On hsw and older, we do not need to allocate the ppgtt on the fly and so
ppgtt->allocate_va_range() is NULL. Fixup ppgtt_bind_vma not to call it,
in that case!

v2: PIN_UPDATE still exists.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20180601093554.13083-1-chris@chris-wilson.co.uk
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180601093554.13083-2-chris@chris-wilson.co.uk

diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index fc5c0f7..ec60be4 100644 (file)
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -190,19 +190,11 @@ int intel_sanitize_enable_ppgtt(struct drm_i915_private *dev_priv,
        return 1;
 }
 
-static int ppgtt_bind_vma(struct i915_vma *vma,
-                         enum i915_cache_level cache_level,
-                         u32 unused)
+static int gen6_ppgtt_bind_vma(struct i915_vma *vma,
+                              enum i915_cache_level cache_level,
+                              u32 unused)
 {
        u32 pte_flags;
-       int ret;
-
-       if (!(vma->flags & I915_VMA_LOCAL_BIND)) {
-               ret = vma->vm->allocate_va_range(vma->vm, vma->node.start,
-                                                vma->size);
-               if (ret)
-                       return ret;
-       }
 
        /* Currently applicable only to VLV */
        pte_flags = 0;
@@ -214,6 +206,22 @@ static int ppgtt_bind_vma(struct i915_vma *vma,
        return 0;
 }
 
+static int gen8_ppgtt_bind_vma(struct i915_vma *vma,
+                              enum i915_cache_level cache_level,
+                              u32 unused)
+{
+       int ret;
+
+       if (!(vma->flags & I915_VMA_LOCAL_BIND)) {
+               ret = vma->vm->allocate_va_range(vma->vm,
+                                                vma->node.start, vma->size);
+               if (ret)
+                       return ret;
+       }
+
+       return gen6_ppgtt_bind_vma(vma, cache_level, unused);
+}
+
 static void ppgtt_unbind_vma(struct i915_vma *vma)
 {
        vma->vm->clear_range(vma->vm, vma->node.start, vma->size);
@@ -1657,8 +1665,8 @@ static int gen8_ppgtt_init(struct i915_hw_ppgtt *ppgtt)
                gen8_ppgtt_notify_vgt(ppgtt, true);
 
        ppgtt->base.cleanup = gen8_ppgtt_cleanup;
+       ppgtt->base.bind_vma = gen8_ppgtt_bind_vma;
        ppgtt->base.unbind_vma = ppgtt_unbind_vma;
-       ppgtt->base.bind_vma = ppgtt_bind_vma;
        ppgtt->base.set_pages = ppgtt_set_pages;
        ppgtt->base.clear_pages = clear_pages;
        ppgtt->debug_dump = gen8_dump_ppgtt;
@@ -2100,8 +2108,8 @@ static int gen6_ppgtt_init(struct i915_hw_ppgtt *ppgtt)
 
        ppgtt->base.clear_range = gen6_ppgtt_clear_range;
        ppgtt->base.insert_entries = gen6_ppgtt_insert_entries;
+       ppgtt->base.bind_vma = gen6_ppgtt_bind_vma;
        ppgtt->base.unbind_vma = ppgtt_unbind_vma;
-       ppgtt->base.bind_vma = ppgtt_bind_vma;
        ppgtt->base.set_pages = ppgtt_set_pages;
        ppgtt->base.clear_pages = clear_pages;
        ppgtt->base.cleanup = gen6_ppgtt_cleanup;