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drm/i915: Set up fence registers on sandybridge.

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Signed-off-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Eric Anholt 2009-10-26 16:44:17 -07:00
parent bad720ff3e
commit 4e901fdc26
2 changed files with 33 additions and 3 deletions
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33
drivers/gpu/drm/i915/i915_gem.c
View File

@ -2261,6 +2261,28 @@ i915_gem_object_get_pages(struct drm_gem_object *obj,
return 0;
}
static void sandybridge_write_fence_reg(struct drm_i915_fence_reg *reg)
{
struct drm_gem_object *obj = reg->obj;
struct drm_device *dev = obj->dev;
drm_i915_private_t *dev_priv = dev->dev_private;
struct drm_i915_gem_object *obj_priv = obj->driver_private;
int regnum = obj_priv->fence_reg;
uint64_t val;
val = (uint64_t)((obj_priv->gtt_offset + obj->size - 4096) &
0xfffff000) << 32;
val |= obj_priv->gtt_offset & 0xfffff000;
val |= (uint64_t)((obj_priv->stride / 128) - 1) <<
SANDYBRIDGE_FENCE_PITCH_SHIFT;
if (obj_priv->tiling_mode == I915_TILING_Y)
val |= 1 << I965_FENCE_TILING_Y_SHIFT;
val |= I965_FENCE_REG_VALID;
I915_WRITE64(FENCE_REG_SANDYBRIDGE_0 + (regnum * 8), val);
}
static void i965_write_fence_reg(struct drm_i915_fence_reg *reg)
{
struct drm_gem_object *obj = reg->obj;
@ -2478,7 +2500,9 @@ i915_gem_object_get_fence_reg(struct drm_gem_object *obj)
reg->obj = obj;
if (IS_I965G(dev))
if (IS_GEN6(dev))
sandybridge_write_fence_reg(reg);
else if (IS_I965G(dev))
i965_write_fence_reg(reg);
else if (IS_I9XX(dev))
i915_write_fence_reg(reg);
@ -2504,9 +2528,12 @@ i915_gem_clear_fence_reg(struct drm_gem_object *obj)
drm_i915_private_t *dev_priv = dev->dev_private;
struct drm_i915_gem_object *obj_priv = obj->driver_private;
if (IS_I965G(dev))
if (IS_GEN6(dev)) {
I915_WRITE64(FENCE_REG_SANDYBRIDGE_0 +
(obj_priv->fence_reg * 8), 0);
} else if (IS_I965G(dev)) {
I915_WRITE64(FENCE_REG_965_0 + (obj_priv->fence_reg * 8), 0);
else {
} else {
uint32_t fence_reg;
if (obj_priv->fence_reg < 8)

3
drivers/gpu/drm/i915/i915_reg.h
View File

@ -235,6 +235,9 @@
#define I965_FENCE_REG_VALID (1<<0)
#define I965_FENCE_MAX_PITCH_VAL 0x0400
#define FENCE_REG_SANDYBRIDGE_0 0x100000
#define SANDYBRIDGE_FENCE_PITCH_SHIFT 32
/*
* Instruction and interrupt control regs
*/