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drm/i915: move the wait_rendering call into flush_gpu_write_domain
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One caller (for the pageflip support) wants a purely pipelined flush.
Distinguish this case by a new parameter. This will also be useful
later on for pipelined fencing.

v2: Simplify the code by depending upon the implicit request emitting
of i915_wait_request.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
[ickle: And drop the non-interruptible support in the process.]
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Daniel Vetter authored and Chris Wilson committed Sep 8, 2010
1 parent 617dbe2 commit ba3d8d7
Showing 1 changed file with 33 additions and 55 deletions.
88 changes: 33 additions & 55 deletions drivers/gpu/drm/i915/i915_gem.c
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Original file line number Diff line number Diff line change
Expand Up @@ -37,7 +37,9 @@
#include <linux/intel-gtt.h>

static uint32_t i915_gem_get_gtt_alignment(struct drm_gem_object *obj);
static int i915_gem_object_flush_gpu_write_domain(struct drm_gem_object *obj);

static int i915_gem_object_flush_gpu_write_domain(struct drm_gem_object *obj,
bool pipelined);
static void i915_gem_object_flush_gtt_write_domain(struct drm_gem_object *obj);
static void i915_gem_object_flush_cpu_write_domain(struct drm_gem_object *obj);
static int i915_gem_object_set_to_cpu_domain(struct drm_gem_object *obj,
Expand All @@ -46,8 +48,7 @@ static int i915_gem_object_set_cpu_read_domain_range(struct drm_gem_object *obj,
uint64_t offset,
uint64_t size);
static void i915_gem_object_set_to_full_cpu_read_domain(struct drm_gem_object *obj);
static int i915_gem_object_wait_rendering(struct drm_gem_object *obj,
bool interruptible);
static int i915_gem_object_wait_rendering(struct drm_gem_object *obj);
static int i915_gem_object_bind_to_gtt(struct drm_gem_object *obj,
unsigned alignment);
static void i915_gem_clear_fence_reg(struct drm_gem_object *obj);
Expand Down Expand Up @@ -1933,8 +1934,7 @@ i915_gem_flush(struct drm_device *dev,
* safe to unbind from the GTT or access from the CPU.
*/
static int
i915_gem_object_wait_rendering(struct drm_gem_object *obj,
bool interruptible)
i915_gem_object_wait_rendering(struct drm_gem_object *obj)
{
struct drm_device *dev = obj->dev;
struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
Expand All @@ -1953,10 +1953,9 @@ i915_gem_object_wait_rendering(struct drm_gem_object *obj,
DRM_INFO("%s: object %p wait for seqno %08x\n",
__func__, obj, obj_priv->last_rendering_seqno);
#endif
ret = i915_do_wait_request(dev,
obj_priv->last_rendering_seqno,
interruptible,
obj_priv->ring);
ret = i915_wait_request(dev,
obj_priv->last_rendering_seqno,
obj_priv->ring);
if (ret != 0)
return ret;
}
Expand Down Expand Up @@ -2453,11 +2452,7 @@ i915_gem_object_put_fence_reg(struct drm_gem_object *obj)
if (!IS_I965G(dev)) {
int ret;

ret = i915_gem_object_flush_gpu_write_domain(obj);
if (ret != 0)
return ret;

ret = i915_gem_object_wait_rendering(obj, true);
ret = i915_gem_object_flush_gpu_write_domain(obj, false);
if (ret != 0)
return ret;
}
Expand Down Expand Up @@ -2609,25 +2604,27 @@ i915_gem_clflush_object(struct drm_gem_object *obj)

/** Flushes any GPU write domain for the object if it's dirty. */
static int
i915_gem_object_flush_gpu_write_domain(struct drm_gem_object *obj)
i915_gem_object_flush_gpu_write_domain(struct drm_gem_object *obj,
bool pipelined)
{
struct drm_device *dev = obj->dev;
uint32_t old_write_domain;
struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);

if ((obj->write_domain & I915_GEM_GPU_DOMAINS) == 0)
return 0;

/* Queue the GPU write cache flushing we need. */
old_write_domain = obj->write_domain;
i915_gem_flush(dev, 0, obj->write_domain);
if (i915_add_request(dev, NULL, obj_priv->ring) == 0)
return -ENOMEM;

trace_i915_gem_object_change_domain(obj,
obj->read_domains,
old_write_domain);
return 0;

if (pipelined)
return 0;

return i915_gem_object_wait_rendering(obj);
}

/** Flushes the GTT write domain for the object if it's dirty. */
Expand Down Expand Up @@ -2684,7 +2681,7 @@ i915_gem_object_flush_write_domain(struct drm_gem_object *obj)
i915_gem_object_flush_cpu_write_domain(obj);
break;
default:
ret = i915_gem_object_flush_gpu_write_domain(obj);
ret = i915_gem_object_flush_gpu_write_domain(obj, true);
break;
}

Expand All @@ -2708,12 +2705,7 @@ i915_gem_object_set_to_gtt_domain(struct drm_gem_object *obj, int write)
if (obj_priv->gtt_space == NULL)
return -EINVAL;

ret = i915_gem_object_flush_gpu_write_domain(obj);
if (ret != 0)
return ret;

/* Wait on any GPU rendering and flushing to occur. */
ret = i915_gem_object_wait_rendering(obj, true);
ret = i915_gem_object_flush_gpu_write_domain(obj, false);
if (ret != 0)
return ret;

Expand All @@ -2723,8 +2715,13 @@ i915_gem_object_set_to_gtt_domain(struct drm_gem_object *obj, int write)
/* If we're writing through the GTT domain, then CPU and GPU caches
* will need to be invalidated at next use.
*/
if (write)
if (write) {
ret = i915_gem_object_wait_rendering(obj);
if (ret)
return ret;

obj->read_domains &= I915_GEM_DOMAIN_GTT;
}

i915_gem_object_flush_cpu_write_domain(obj);

Expand Down Expand Up @@ -2753,38 +2750,25 @@ int
i915_gem_object_set_to_display_plane(struct drm_gem_object *obj)
{
struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
uint32_t old_write_domain, old_read_domains;
uint32_t old_read_domains;
int ret;

/* Not valid to be called on unbound objects. */
if (obj_priv->gtt_space == NULL)
return -EINVAL;

ret = i915_gem_object_flush_gpu_write_domain(obj);
if (ret)
return ret;

/* Wait on any GPU rendering and flushing to occur. */
ret = i915_gem_object_wait_rendering(obj, false);
ret = i915_gem_object_flush_gpu_write_domain(obj, true);
if (ret != 0)
return ret;

i915_gem_object_flush_cpu_write_domain(obj);

old_write_domain = obj->write_domain;
old_read_domains = obj->read_domains;

/* It should now be out of any other write domains, and we can update
* the domain values for our changes.
*/
BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_GTT) != 0);
obj->read_domains = I915_GEM_DOMAIN_GTT;
obj->write_domain = I915_GEM_DOMAIN_GTT;
obj_priv->dirty = 1;

trace_i915_gem_object_change_domain(obj,
old_read_domains,
old_write_domain);
obj->write_domain);

return 0;
}
Expand All @@ -2801,12 +2785,7 @@ i915_gem_object_set_to_cpu_domain(struct drm_gem_object *obj, int write)
uint32_t old_write_domain, old_read_domains;
int ret;

ret = i915_gem_object_flush_gpu_write_domain(obj);
if (ret)
return ret;

/* Wait on any GPU rendering and flushing to occur. */
ret = i915_gem_object_wait_rendering(obj, true);
ret = i915_gem_object_flush_gpu_write_domain(obj, false);
if (ret != 0)
return ret;

Expand Down Expand Up @@ -2836,6 +2815,10 @@ i915_gem_object_set_to_cpu_domain(struct drm_gem_object *obj, int write)
* need to be invalidated at next use.
*/
if (write) {
ret = i915_gem_object_wait_rendering(obj);
if (ret)
return ret;

obj->read_domains &= I915_GEM_DOMAIN_CPU;
obj->write_domain = I915_GEM_DOMAIN_CPU;
}
Expand Down Expand Up @@ -3094,12 +3077,7 @@ i915_gem_object_set_cpu_read_domain_range(struct drm_gem_object *obj,
if (offset == 0 && size == obj->size)
return i915_gem_object_set_to_cpu_domain(obj, 0);

ret = i915_gem_object_flush_gpu_write_domain(obj);
if (ret)
return ret;

/* Wait on any GPU rendering and flushing to occur. */
ret = i915_gem_object_wait_rendering(obj, true);
ret = i915_gem_object_flush_gpu_write_domain(obj, false);
if (ret != 0)
return ret;
i915_gem_object_flush_gtt_write_domain(obj);
Expand Down

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