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drm/i915: Use engine to refer to the user's BSD intel_engine_cs 

This patch transitions the execbuf engine selection away from using the
ring nomenclature - though we still refer to the user's incoming
selector as their user_ring_id.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/1469432687-22756-7-git-send-email-chris@chris-wilson.co.uk
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1469606850-28659-2-git-send-email-chris@chris-wilson.co.uk
steinar/wifi_calib_4_9_kernel
Chris Wilson 2016-07-27 09:07:27 +01:00
parent 33a051a5fc
commit c80ff16e11
3 changed files with 11 additions and 10 deletions
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4
drivers/gpu/drm/i915/i915_drv.h
View File

@ -402,7 +402,7 @@ struct drm_i915_file_private {
unsigned boosts;
} rps;
unsigned int bsd_ring;
unsigned int bsd_engine;
};
/* Used by dp and fdi links */
@ -1331,7 +1331,7 @@ struct i915_gem_mm {
bool interruptible;
/* the indicator for dispatch video commands on two BSD rings */
unsigned int bsd_ring_dispatch_index;
unsigned int bsd_engine_dispatch_index;
/** Bit 6 swizzling required for X tiling */
uint32_t bit_6_swizzle_x;

2
drivers/gpu/drm/i915/i915_gem.c
View File

@ -4782,7 +4782,7 @@ int i915_gem_open(struct drm_device *dev, struct drm_file *file)
spin_lock_init(&file_priv->mm.lock);
INIT_LIST_HEAD(&file_priv->mm.request_list);
file_priv->bsd_ring = -1;
file_priv->bsd_engine = -1;
ret = i915_gem_context_open(dev, file);
if (ret)

15
drivers/gpu/drm/i915/i915_gem_execbuffer.c
View File

@ -1351,23 +1351,24 @@ i915_gem_ringbuffer_submission(struct i915_execbuffer_params *params,
/**
* Find one BSD ring to dispatch the corresponding BSD command.
* The ring index is returned.
* The engine index is returned.
*/
static unsigned int
gen8_dispatch_bsd_ring(struct drm_i915_private *dev_priv, struct drm_file *file)
gen8_dispatch_bsd_engine(struct drm_i915_private *dev_priv,
struct drm_file *file)
{
struct drm_i915_file_private *file_priv = file->driver_priv;
/* Check whether the file_priv has already selected one ring. */
if ((int)file_priv->bsd_ring < 0) {
if ((int)file_priv->bsd_engine < 0) {
/* If not, use the ping-pong mechanism to select one. */
mutex_lock(&dev_priv->drm.struct_mutex);
file_priv->bsd_ring = dev_priv->mm.bsd_ring_dispatch_index;
dev_priv->mm.bsd_ring_dispatch_index ^= 1;
file_priv->bsd_engine = dev_priv->mm.bsd_engine_dispatch_index;
dev_priv->mm.bsd_engine_dispatch_index ^= 1;
mutex_unlock(&dev_priv->drm.struct_mutex);
}
return file_priv->bsd_ring;
return file_priv->bsd_engine;
}
#define I915_USER_RINGS (4)
@ -1404,7 +1405,7 @@ eb_select_engine(struct drm_i915_private *dev_priv,
unsigned int bsd_idx = args->flags & I915_EXEC_BSD_MASK;
if (bsd_idx == I915_EXEC_BSD_DEFAULT) {
bsd_idx = gen8_dispatch_bsd_ring(dev_priv, file);
bsd_idx = gen8_dispatch_bsd_engine(dev_priv, file);
} else if (bsd_idx >= I915_EXEC_BSD_RING1 &&
bsd_idx <= I915_EXEC_BSD_RING2) {
bsd_idx >>= I915_EXEC_BSD_SHIFT;