[PATCH 01/13] drm/i915: Move semaphore specific ring members to struct

Ben Widawsky
2014-01-29T19:55:41Z

This will be helpful in abstracting some of the code in preparation for
gen8 semaphores.

Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
---
drivers/gpu/drm/i915/i915_gem.c | 10 ++--
drivers/gpu/drm/i915/i915_gpu_error.c | 6 +--
drivers/gpu/drm/i915/intel_ringbuffer.c | 84 ++++++++++++++++-----------------
drivers/gpu/drm/i915/intel_ringbuffer.h | 17 ++++---
4 files changed, 60 insertions(+), 57 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 39770f7..1ab6cd0 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2082,8 +2082,8 @@ i915_gem_init_seqno(struct drm_device *dev, u32 seqno)
for_each_ring(ring, dev_priv, i) {
intel_ring_init_seqno(ring, seqno);

- for (j = 0; j < ARRAY_SIZE(ring->sync_seqno); j++)
- ring->sync_seqno[j] = 0;
+ for (j = 0; j < ARRAY_SIZE(ring->semaphore.sync_seqno); j++)
+ ring->semaphore.sync_seqno[j] = 0;
}

return 0;
@@ -2715,7 +2715,7 @@ i915_gem_object_sync(struct drm_i915_gem_object *obj,
idx = intel_ring_sync_index(from, to);

seqno = obj->last_read_seqno;
- if (seqno <= from->sync_seqno[idx])
+ if (seqno <= from->semaphore.sync_seqno[idx])
return 0;

ret = i915_gem_check_olr(obj->ring, seqno);
@@ -2723,13 +2723,13 @@ i915_gem_object_sync(struct drm_i915_gem_object *obj,
return ret;

trace_i915_gem_ring_sync_to(from, to, seqno);
- ret = to->sync_to(to, from, seqno);
+ ret = to->semaphore.sync_to(to, from, seqno);
if (!ret)
/* We use last_read_seqno because sync_to()
* might have just caused seqno wrap under
* the radar.
*/
- from->sync_seqno[idx] = obj->last_read_seqno;
+ from->semaphore.sync_seqno[idx] = obj->last_read_seqno;

return ret;
}
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index 4cc9162..a8b91fc 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -767,14 +767,14 @@ static void i915_record_ring_state(struct drm_device *dev,
= I915_READ(RING_SYNC_0(ring->mmio_base));
error->semaphore_mboxes[ring->id][1]
= I915_READ(RING_SYNC_1(ring->mmio_base));
- error->semaphore_seqno[ring->id][0] = ring->sync_seqno[0];
- error->semaphore_seqno[ring->id][1] = ring->sync_seqno[1];
+ error->semaphore_seqno[ring->id][0] = ring->semaphore.sync_seqno[0];
+ error->semaphore_seqno[ring->id][1] = ring->semaphore.sync_seqno[1];
}

if (HAS_VEBOX(dev)) {
error->semaphore_mboxes[ring->id][2] =
I915_READ(RING_SYNC_2(ring->mmio_base));
- error->semaphore_seqno[ring->id][2] = ring->sync_seqno[2];
+ error->semaphore_seqno[ring->id][2] = ring->semaphore.sync_seqno[2];
}

if (INTEL_INFO(dev)->gen >= 4) {
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index d897a19..4588d7f 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -675,7 +675,7 @@ gen6_add_request(struct intel_ring_buffer *ring)

if (i915_semaphore_is_enabled(dev)) {
for_each_ring(useless, dev_priv, i) {
- u32 mbox_reg = ring->signal_mbox[i];
+ u32 mbox_reg = ring->semaphore.signal_mbox[i];
if (mbox_reg != GEN6_NOSYNC)
update_mboxes(ring, mbox_reg);
}
@@ -720,7 +720,7 @@ gen6_ring_sync(struct intel_ring_buffer *waiter,
*/
seqno -= 1;

- WARN_ON(signaller->semaphore_register[waiter->id] ==
+ WARN_ON(signaller->semaphore.mbox[waiter->id] ==
MI_SEMAPHORE_SYNC_INVALID);

ret = intel_ring_begin(waiter, 4);
@@ -729,9 +729,8 @@ gen6_ring_sync(struct intel_ring_buffer *waiter,

/* If seqno wrap happened, omit the wait with no-ops */
if (likely(!i915_gem_has_seqno_wrapped(waiter->dev, seqno))) {
- intel_ring_emit(waiter,
- dw1 |
- signaller->semaphore_register[waiter->id]);
+ intel_ring_emit(waiter, dw1 |
+ signaller->semaphore.mbox[waiter->id]);
intel_ring_emit(waiter, seqno);
intel_ring_emit(waiter, 0);
intel_ring_emit(waiter, MI_NOOP);
@@ -1328,7 +1327,8 @@ static int intel_init_ring_buffer(struct drm_device *dev,
INIT_LIST_HEAD(&ring->active_list);
INIT_LIST_HEAD(&ring->request_list);
ring->size = 32 * PAGE_SIZE;
- memset(ring->sync_seqno, 0, sizeof(ring->sync_seqno));
+ memset(ring->semaphore.sync_seqno, 0,
+ sizeof(ring->semaphore.sync_seqno));

init_waitqueue_head(&ring->irq_queue);

@@ -1871,15 +1871,15 @@ int intel_init_render_ring_buffer(struct drm_device *dev)
ring->irq_enable_mask = GT_RENDER_USER_INTERRUPT;
ring->get_seqno = gen6_ring_get_seqno;
ring->set_seqno = ring_set_seqno;
- ring->sync_to = gen6_ring_sync;
- ring->semaphore_register[RCS] = MI_SEMAPHORE_SYNC_INVALID;
- ring->semaphore_register[VCS] = MI_SEMAPHORE_SYNC_RV;
- ring->semaphore_register[BCS] = MI_SEMAPHORE_SYNC_RB;
- ring->semaphore_register[VECS] = MI_SEMAPHORE_SYNC_RVE;
- ring->signal_mbox[RCS] = GEN6_NOSYNC;
- ring->signal_mbox[VCS] = GEN6_VRSYNC;
- ring->signal_mbox[BCS] = GEN6_BRSYNC;
- ring->signal_mbox[VECS] = GEN6_VERSYNC;
+ ring->semaphore.sync_to = gen6_ring_sync;
+ ring->semaphore.mbox[RCS] = MI_SEMAPHORE_SYNC_INVALID;
+ ring->semaphore.mbox[VCS] = MI_SEMAPHORE_SYNC_RV;
+ ring->semaphore.mbox[BCS] = MI_SEMAPHORE_SYNC_RB;
+ ring->semaphore.mbox[VECS] = MI_SEMAPHORE_SYNC_RVE;
+ ring->semaphore.signal_mbox[RCS] = GEN6_NOSYNC;
+ ring->semaphore.signal_mbox[VCS] = GEN6_VRSYNC;
+ ring->semaphore.signal_mbox[BCS] = GEN6_BRSYNC;
+ ring->semaphore.signal_mbox[VECS] = GEN6_VERSYNC;
} else if (IS_GEN5(dev)) {
ring->add_request = pc_render_add_request;
ring->flush = gen4_render_ring_flush;
@@ -2047,15 +2047,15 @@ int intel_init_bsd_ring_buffer(struct drm_device *dev)
ring->dispatch_execbuffer =
gen6_ring_dispatch_execbuffer;
}
- ring->sync_to = gen6_ring_sync;
- ring->semaphore_register[RCS] = MI_SEMAPHORE_SYNC_VR;
- ring->semaphore_register[VCS] = MI_SEMAPHORE_SYNC_INVALID;
- ring->semaphore_register[BCS] = MI_SEMAPHORE_SYNC_VB;
- ring->semaphore_register[VECS] = MI_SEMAPHORE_SYNC_VVE;
- ring->signal_mbox[RCS] = GEN6_RVSYNC;
- ring->signal_mbox[VCS] = GEN6_NOSYNC;
- ring->signal_mbox[BCS] = GEN6_BVSYNC;
- ring->signal_mbox[VECS] = GEN6_VEVSYNC;
+ ring->semaphore.sync_to = gen6_ring_sync;
+ ring->semaphore.mbox[RCS] = MI_SEMAPHORE_SYNC_VR;
+ ring->semaphore.mbox[VCS] = MI_SEMAPHORE_SYNC_INVALID;
+ ring->semaphore.mbox[BCS] = MI_SEMAPHORE_SYNC_VB;
+ ring->semaphore.mbox[VECS] = MI_SEMAPHORE_SYNC_VVE;
+ ring->semaphore.signal_mbox[RCS] = GEN6_RVSYNC;
+ ring->semaphore.signal_mbox[VCS] = GEN6_NOSYNC;
+ ring->semaphore.signal_mbox[BCS] = GEN6_BVSYNC;
+ ring->semaphore.signal_mbox[VECS] = GEN6_VEVSYNC;
} else {
ring->mmio_base = BSD_RING_BASE;
ring->flush = bsd_ring_flush;
@@ -2104,15 +2104,15 @@ int intel_init_blt_ring_buffer(struct drm_device *dev)
ring->irq_put = gen6_ring_put_irq;
ring->dispatch_execbuffer = gen6_ring_dispatch_execbuffer;
}
- ring->sync_to = gen6_ring_sync;
- ring->semaphore_register[RCS] = MI_SEMAPHORE_SYNC_BR;
- ring->semaphore_register[VCS] = MI_SEMAPHORE_SYNC_BV;
- ring->semaphore_register[BCS] = MI_SEMAPHORE_SYNC_INVALID;
- ring->semaphore_register[VECS] = MI_SEMAPHORE_SYNC_BVE;
- ring->signal_mbox[RCS] = GEN6_RBSYNC;
- ring->signal_mbox[VCS] = GEN6_VBSYNC;
- ring->signal_mbox[BCS] = GEN6_NOSYNC;
- ring->signal_mbox[VECS] = GEN6_VEBSYNC;
+ ring->semaphore.sync_to = gen6_ring_sync;
+ ring->semaphore.mbox[RCS] = MI_SEMAPHORE_SYNC_BR;
+ ring->semaphore.mbox[VCS] = MI_SEMAPHORE_SYNC_BV;
+ ring->semaphore.mbox[BCS] = MI_SEMAPHORE_SYNC_INVALID;
+ ring->semaphore.mbox[VECS] = MI_SEMAPHORE_SYNC_BVE;
+ ring->semaphore.signal_mbox[RCS] = GEN6_RBSYNC;
+ ring->semaphore.signal_mbox[VCS] = GEN6_VBSYNC;
+ ring->semaphore.signal_mbox[BCS] = GEN6_NOSYNC;
+ ring->semaphore.signal_mbox[VECS] = GEN6_VEBSYNC;
ring->init = init_ring_common;

return intel_init_ring_buffer(dev, ring);
@@ -2145,15 +2145,15 @@ int intel_init_vebox_ring_buffer(struct drm_device *dev)
ring->irq_put = hsw_vebox_put_irq;
ring->dispatch_execbuffer = gen6_ring_dispatch_execbuffer;
}
- ring->sync_to = gen6_ring_sync;
- ring->semaphore_register[RCS] = MI_SEMAPHORE_SYNC_VER;
- ring->semaphore_register[VCS] = MI_SEMAPHORE_SYNC_VEV;
- ring->semaphore_register[BCS] = MI_SEMAPHORE_SYNC_VEB;
- ring->semaphore_register[VECS] = MI_SEMAPHORE_SYNC_INVALID;
- ring->signal_mbox[RCS] = GEN6_RVESYNC;
- ring->signal_mbox[VCS] = GEN6_VVESYNC;
- ring->signal_mbox[BCS] = GEN6_BVESYNC;
- ring->signal_mbox[VECS] = GEN6_NOSYNC;
+ ring->semaphore.sync_to = gen6_ring_sync;
+ ring->semaphore.mbox[RCS] = MI_SEMAPHORE_SYNC_VER;
+ ring->semaphore.mbox[VCS] = MI_SEMAPHORE_SYNC_VEV;
+ ring->semaphore.mbox[BCS] = MI_SEMAPHORE_SYNC_VEB;
+ ring->semaphore.mbox[VECS] = MI_SEMAPHORE_SYNC_INVALID;
+ ring->semaphore.signal_mbox[RCS] = GEN6_RVESYNC;
+ ring->semaphore.signal_mbox[VCS] = GEN6_VVESYNC;
+ ring->semaphore.signal_mbox[BCS] = GEN6_BVESYNC;
+ ring->semaphore.signal_mbox[VECS] = GEN6_NOSYNC;
ring->init = init_ring_common;

return intel_init_ring_buffer(dev, ring);
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h
index 71a73f4..b5fc768 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.h
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.h
@@ -83,7 +83,6 @@ struct intel_ring_buffer {
unsigned irq_refcount; /* protected by dev_priv->irq_lock */
u32 irq_enable_mask; /* bitmask to enable ring interrupt */
u32 trace_irq_seqno;
- u32 sync_seqno[I915_NUM_RINGS-1];
bool __must_check (*irq_get)(struct intel_ring_buffer *ring);
void (*irq_put)(struct intel_ring_buffer *ring);

@@ -111,14 +110,18 @@ struct intel_ring_buffer {
#define I915_DISPATCH_SECURE 0x1
#define I915_DISPATCH_PINNED 0x2
void (*cleanup)(struct intel_ring_buffer *ring);
- int (*sync_to)(struct intel_ring_buffer *ring,
+
+ struct {
+ u32 sync_seqno[I915_NUM_RINGS-1];
+ /* AKA wait() */
+ int (*sync_to)(struct intel_ring_buffer *ring,
struct intel_ring_buffer *to,
u32 seqno);
-
- /* our mbox written by others */
- u32 semaphore_register[I915_NUM_RINGS];
- /* mboxes this ring signals to */
- u32 signal_mbox[I915_NUM_RINGS];
+ /* our mbox written by others */
+ u32 mbox[I915_NUM_RINGS];
+ /* mboxes this ring signals to */
+ u32 signal_mbox[I915_NUM_RINGS];
+ } semaphore;

/**
* List of objects currently involved in rendering from the
--
1.8.5.3