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drm/i915: Refactor fence clearing to use the common fence writing routine

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Now that we have a routine that is able to clear the fences as well as
setup up the register for a tiled object, remove the surplus routines to
clear the fences.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Chris Wilson 2012-04-17 15:31:32 +01:00 • committed by Daniel Vetter
commit ada726c734
1 changed files with 9 additions and 53 deletions
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62
drivers/gpu/drm/i915/i915_gem.c
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@ -42,8 +42,6 @@ static void i915_gem_object_flush_cpu_write_domain(struct drm_i915_gem_object *o
static __must_check int i915_gem_object_bind_to_gtt(struct drm_i915_gem_object *obj, static __must_check int i915_gem_object_bind_to_gtt(struct drm_i915_gem_object *obj,
unsigned alignment, unsigned alignment,
bool map_and_fenceable); bool map_and_fenceable);
static void i915_gem_clear_fence_reg(struct drm_device *dev,
struct drm_i915_fence_reg *reg);
static int i915_gem_phys_pwrite(struct drm_device *dev, static int i915_gem_phys_pwrite(struct drm_device *dev,
struct drm_i915_gem_object *obj, struct drm_i915_gem_object *obj,
struct drm_i915_gem_pwrite *args, struct drm_i915_gem_pwrite *args,
@ -1655,19 +1653,18 @@ static void i915_gem_reset_fences(struct drm_device *dev)
for (i = 0; i < dev_priv->num_fence_regs; i++) { for (i = 0; i < dev_priv->num_fence_regs; i++) {
struct drm_i915_fence_reg *reg = &dev_priv->fence_regs[i]; struct drm_i915_fence_reg *reg = &dev_priv->fence_regs[i];
struct drm_i915_gem_object *obj = reg->obj;
if (!obj) i915_gem_write_fence(dev, i, NULL);
continue;
if (obj->tiling_mode) if (reg->obj)
i915_gem_release_mmap(obj); i915_gem_object_fence_lost(reg->obj);
reg->obj->fence_reg = I915_FENCE_REG_NONE; reg->pin_count = 0;
reg->obj->fenced_gpu_access = false; reg->obj = NULL;
reg->obj->last_fenced_seqno = 0; INIT_LIST_HEAD(&reg->lru_list);
i915_gem_clear_fence_reg(dev, reg);
} }
INIT_LIST_HEAD(&dev_priv->mm.fence_list);
} }
void i915_gem_reset(struct drm_device *dev) void i915_gem_reset(struct drm_device *dev)
@ -2512,45 +2509,6 @@ update:
return 0; return 0;
} }
/**
* i915_gem_clear_fence_reg - clear out fence register info
* @obj: object to clear
*
* Zeroes out the fence register itself and clears out the associated
* data structures in dev_priv and obj.
*/
static void
i915_gem_clear_fence_reg(struct drm_device *dev,
struct drm_i915_fence_reg *reg)
{
drm_i915_private_t *dev_priv = dev->dev_private;
uint32_t fence_reg = reg - dev_priv->fence_regs;
switch (INTEL_INFO(dev)->gen) {
case 7:
case 6:
I915_WRITE64(FENCE_REG_SANDYBRIDGE_0 + fence_reg*8, 0);
break;
case 5:
case 4:
I915_WRITE64(FENCE_REG_965_0 + fence_reg*8, 0);
break;
case 3:
if (fence_reg >= 8)
fence_reg = FENCE_REG_945_8 + (fence_reg - 8) * 4;
else
case 2:
fence_reg = FENCE_REG_830_0 + fence_reg * 4;
I915_WRITE(fence_reg, 0);
break;
}
list_del_init(&reg->lru_list);
reg->obj = NULL;
reg->pin_count = 0;
}
/** /**
* Finds free space in the GTT aperture and binds the object there. * Finds free space in the GTT aperture and binds the object there.
*/ */
@ -3788,9 +3746,7 @@ i915_gem_load(struct drm_device *dev)
dev_priv->num_fence_regs = 8; dev_priv->num_fence_regs = 8;
/* Initialize fence registers to zero */ /* Initialize fence registers to zero */
for (i = 0; i < dev_priv->num_fence_regs; i++) { i915_gem_reset_fences(dev);
i915_gem_clear_fence_reg(dev, &dev_priv->fence_regs[i]);
}
i915_gem_detect_bit_6_swizzle(dev); i915_gem_detect_bit_6_swizzle(dev);
init_waitqueue_head(&dev_priv->pending_flip_queue); init_waitqueue_head(&dev_priv->pending_flip_queue);