[PATCH 18/55] drm/i915: Unify legacy/execlists emission of MI_BATCHBUFFER_START

Chris Wilson
2016-07-25T17:37:04Z

Both the ->dispatch_execbuffer and ->emit_bb_start callbacks do exactly
the same thing, add MI_BATCHBUFFER_START to the request's ringbuffer -
we need only one vfunc.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1469432687-22756-20-git-send-email-chris@chris-wilson.co.uk
---
drivers/gpu/drm/i915/i915_gem_execbuffer.c | 6 ++--
drivers/gpu/drm/i915/i915_gem_render_state.c | 16 +++++-----
drivers/gpu/drm/i915/intel_lrc.c | 15 ++++++---
drivers/gpu/drm/i915/intel_ringbuffer.c | 48 ++++++++++++++--------------
drivers/gpu/drm/i915/intel_ringbuffer.h | 12 +++----
5 files changed, 50 insertions(+), 47 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
index eacd78fc93c4..29407787b219 100644
--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
@@ -1326,9 +1326,9 @@ i915_gem_ringbuffer_submission(struct i915_execbuffer_params *params,
if (exec_len == 0)
exec_len = params->batch_obj->base.size;

- ret = params->engine->dispatch_execbuffer(params->request,
- exec_start, exec_len,
- params->dispatch_flags);
+ ret = params->engine->emit_bb_start(params->request,
+ exec_start, exec_len,
+ params->dispatch_flags);
if (ret)
return ret;

diff --git a/drivers/gpu/drm/i915/i915_gem_render_state.c b/drivers/gpu/drm/i915/i915_gem_render_state.c
index b2be4676a5cf..2ba759f3ab6f 100644
--- a/drivers/gpu/drm/i915/i915_gem_render_state.c
+++ b/drivers/gpu/drm/i915/i915_gem_render_state.c
@@ -234,18 +234,18 @@ int i915_gem_render_state_init(struct drm_i915_gem_request *req)
if (so.rodata == NULL)
return 0;

- ret = req->engine->dispatch_execbuffer(req, so.ggtt_offset,
- so.rodata->batch_items * 4,
- I915_DISPATCH_SECURE);
+ ret = req->engine->emit_bb_start(req, so.ggtt_offset,
+ so.rodata->batch_items * 4,
+ I915_DISPATCH_SECURE);
if (ret)
goto out;

if (so.aux_batch_size > 8) {
- ret = req->engine->dispatch_execbuffer(req,
- (so.ggtt_offset +
- so.aux_batch_offset),
- so.aux_batch_size,
- I915_DISPATCH_SECURE);
+ ret = req->engine->emit_bb_start(req,
+ (so.ggtt_offset +
+ so.aux_batch_offset),
+ so.aux_batch_size,
+ I915_DISPATCH_SECURE);
if (ret)
goto out;
}
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 1e57f48250ce..80a28ebb5e06 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -859,7 +859,9 @@ int intel_execlists_submission(struct i915_execbuffer_params *params,
exec_start = params->batch_obj_vm_offset +
args->batch_start_offset;

- ret = engine->emit_bb_start(params->request, exec_start, params->dispatch_flags);
+ ret = engine->emit_bb_start(params->request,
+ exec_start, args->batch_len,
+ params->dispatch_flags);
if (ret)
return ret;

@@ -1543,7 +1545,8 @@ static int intel_logical_ring_emit_pdps(struct drm_i915_gem_request *req)
}

static int gen8_emit_bb_start(struct drm_i915_gem_request *req,
- u64 offset, unsigned dispatch_flags)
+ u64 offset, u32 len,
+ unsigned int dispatch_flags)
{
struct intel_ring *ring = req->ring;
bool ppgtt = !(dispatch_flags & I915_DISPATCH_SECURE);
@@ -1819,13 +1822,15 @@ static int intel_lr_context_render_state_init(struct drm_i915_gem_request *req)
return 0;

ret = req->engine->emit_bb_start(req, so.ggtt_offset,
- I915_DISPATCH_SECURE);
+ so.rodata->batch_items * 4,
+ I915_DISPATCH_SECURE);
if (ret)
goto out;

ret = req->engine->emit_bb_start(req,
- (so.ggtt_offset + so.aux_batch_offset),
- I915_DISPATCH_SECURE);
+ (so.ggtt_offset + so.aux_batch_offset),
+ so.aux_batch_size,
+ I915_DISPATCH_SECURE);
if (ret)
goto out;

diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 9e4b49644553..b91dc6acb84a 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -1794,9 +1794,9 @@ gen8_irq_disable(struct intel_engine_cs *engine)
}

static int
-i965_dispatch_execbuffer(struct drm_i915_gem_request *req,
- u64 offset, u32 length,
- unsigned dispatch_flags)
+i965_emit_bb_start(struct drm_i915_gem_request *req,
+ u64 offset, u32 length,
+ unsigned int dispatch_flags)
{
struct intel_ring *ring = req->ring;
int ret;
@@ -1821,9 +1821,9 @@ i965_dispatch_execbuffer(struct drm_i915_gem_request *req,
#define I830_TLB_ENTRIES (2)
#define I830_WA_SIZE max(I830_TLB_ENTRIES*4096, I830_BATCH_LIMIT)
static int
-i830_dispatch_execbuffer(struct drm_i915_gem_request *req,
- u64 offset, u32 len,
- unsigned dispatch_flags)
+i830_emit_bb_start(struct drm_i915_gem_request *req,
+ u64 offset, u32 len,
+ unsigned int dispatch_flags)
{
struct intel_ring *ring = req->ring;
u32 cs_offset = req->engine->scratch.gtt_offset;
@@ -1883,9 +1883,9 @@ i830_dispatch_execbuffer(struct drm_i915_gem_request *req,
}

static int
-i915_dispatch_execbuffer(struct drm_i915_gem_request *req,
- u64 offset, u32 len,
- unsigned dispatch_flags)
+i915_emit_bb_start(struct drm_i915_gem_request *req,
+ u64 offset, u32 len,
+ unsigned int dispatch_flags)
{
struct intel_ring *ring = req->ring;
int ret;
@@ -2578,9 +2578,9 @@ static int gen6_bsd_ring_flush(struct drm_i915_gem_request *req,
}

static int
-gen8_ring_dispatch_execbuffer(struct drm_i915_gem_request *req,
- u64 offset, u32 len,
- unsigned dispatch_flags)
+gen8_emit_bb_start(struct drm_i915_gem_request *req,
+ u64 offset, u32 len,
+ unsigned int dispatch_flags)
{
struct intel_ring *ring = req->ring;
bool ppgtt = USES_PPGTT(req->i915) &&
@@ -2604,9 +2604,9 @@ gen8_ring_dispatch_execbuffer(struct drm_i915_gem_request *req,
}

static int
-hsw_ring_dispatch_execbuffer(struct drm_i915_gem_request *req,
- u64 offset, u32 len,
- unsigned dispatch_flags)
+hsw_emit_bb_start(struct drm_i915_gem_request *req,
+ u64 offset, u32 len,
+ unsigned int dispatch_flags)
{
struct intel_ring *ring = req->ring;
int ret;
@@ -2629,9 +2629,9 @@ hsw_ring_dispatch_execbuffer(struct drm_i915_gem_request *req,
}

static int
-gen6_ring_dispatch_execbuffer(struct drm_i915_gem_request *req,
- u64 offset, u32 len,
- unsigned dispatch_flags)
+gen6_emit_bb_start(struct drm_i915_gem_request *req,
+ u64 offset, u32 len,
+ unsigned int dispatch_flags)
{
struct intel_ring *ring = req->ring;
int ret;
@@ -2835,15 +2835,15 @@ static void intel_ring_default_vfuncs(struct drm_i915_private *dev_priv,
engine->add_request = gen6_add_request;

if (INTEL_GEN(dev_priv) >= 8)
- engine->dispatch_execbuffer = gen8_ring_dispatch_execbuffer;
+ engine->emit_bb_start = gen8_emit_bb_start;
else if (INTEL_GEN(dev_priv) >= 6)
- engine->dispatch_execbuffer = gen6_ring_dispatch_execbuffer;
+ engine->emit_bb_start = gen6_emit_bb_start;
else if (INTEL_GEN(dev_priv) >= 4)
- engine->dispatch_execbuffer = i965_dispatch_execbuffer;
+ engine->emit_bb_start = i965_emit_bb_start;
else if (IS_I830(dev_priv) || IS_845G(dev_priv))
- engine->dispatch_execbuffer = i830_dispatch_execbuffer;
+ engine->emit_bb_start = i830_emit_bb_start;
else
- engine->dispatch_execbuffer = i915_dispatch_execbuffer;
+ engine->emit_bb_start = i915_emit_bb_start;

intel_ring_init_irq(dev_priv, engine);
intel_ring_init_semaphores(dev_priv, engine);
@@ -2881,7 +2881,7 @@ int intel_init_render_ring_buffer(struct intel_engine_cs *engine)
}

if (IS_HASWELL(dev_priv))
- engine->dispatch_execbuffer = hsw_ring_dispatch_execbuffer;
+ engine->emit_bb_start = hsw_emit_bb_start;

engine->init_hw = init_render_ring;
engine->cleanup = render_ring_cleanup;
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h
index 00723401f98c..1ec7b47f6188 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.h
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.h
@@ -214,12 +214,6 @@ struct intel_engine_cs {
* monotonic, even if not coherent.
*/
void (*irq_seqno_barrier)(struct intel_engine_cs *engine);
- int (*dispatch_execbuffer)(struct drm_i915_gem_request *req,
- u64 offset, u32 length,
- unsigned dispatch_flags);
-#define I915_DISPATCH_SECURE 0x1
-#define I915_DISPATCH_PINNED 0x2
-#define I915_DISPATCH_RS 0x4
void (*cleanup)(struct intel_engine_cs *engine);

/* GEN8 signal/wait table - never trust comments!
@@ -295,7 +289,11 @@ struct intel_engine_cs {
u32 invalidate_domains,
u32 flush_domains);
int (*emit_bb_start)(struct drm_i915_gem_request *req,
- u64 offset, unsigned dispatch_flags);
+ u64 offset, u32 length,
+ unsigned int dispatch_flags);
+#define I915_DISPATCH_SECURE 0x1
+#define I915_DISPATCH_PINNED 0x2
+#define I915_DISPATCH_RS 0x4

/**
* List of objects currently involved in rendering from the
--
2.8.1