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drm/i915/bdw: GEN-specific logical ring emit request 

Very similar to the legacy add_request, only modified to account for
logical ringbuffer.

v2: Use MI_GLOBAL_GTT, as suggested by Brad Volkin.

v3: Unify render and non-render in the same function, as noticed by
Brad Volkin.

Signed-off-by: Oscar Mateo <oscar.mateo@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Oscar Mateo 2014-07-24 17:04:27 +01:00 committed by Daniel Vetter
parent 82e104cc26
commit 4da46e1e5b
3 changed files with 35 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/gpu/drm/i915/i915_reg.h
View File

@ -272,6 +272,7 @@
#define MI_SEMAPHORE_POLL (1<<15)
#define MI_SEMAPHORE_SAD_GTE_SDD (1<<12)
#define MI_STORE_DWORD_IMM MI_INSTR(0x20, 1)
#define MI_STORE_DWORD_IMM_GEN8 MI_INSTR(0x20, 2)
#define MI_MEM_VIRTUAL (1 << 22) /* 965+ only */
#define MI_STORE_DWORD_INDEX MI_INSTR(0x21, 1)
#define MI_STORE_DWORD_INDEX_SHIFT 2

31
drivers/gpu/drm/i915/intel_lrc.c
View File

@ -350,6 +350,32 @@ static void gen8_set_seqno(struct intel_engine_cs *ring, u32 seqno)
intel_write_status_page(ring, I915_GEM_HWS_INDEX, seqno);
}
static int gen8_emit_request(struct intel_ringbuffer *ringbuf)
{
struct intel_engine_cs *ring = ringbuf->ring;
u32 cmd;
int ret;
ret = intel_logical_ring_begin(ringbuf, 6);
if (ret)
return ret;
cmd = MI_STORE_DWORD_IMM_GEN8;
cmd |= MI_GLOBAL_GTT;
intel_logical_ring_emit(ringbuf, cmd);
intel_logical_ring_emit(ringbuf,
(ring->status_page.gfx_addr +
(I915_GEM_HWS_INDEX << MI_STORE_DWORD_INDEX_SHIFT)));
intel_logical_ring_emit(ringbuf, 0);
intel_logical_ring_emit(ringbuf, ring->outstanding_lazy_seqno);
intel_logical_ring_emit(ringbuf, MI_USER_INTERRUPT);
intel_logical_ring_emit(ringbuf, MI_NOOP);
intel_logical_ring_advance_and_submit(ringbuf);
return 0;
}
void intel_logical_ring_cleanup(struct intel_engine_cs *ring)
{
if (!intel_ring_initialized(ring))
@ -424,6 +450,7 @@ static int logical_render_ring_init(struct drm_device *dev)
ring->cleanup = intel_fini_pipe_control;
ring->get_seqno = gen8_get_seqno;
ring->set_seqno = gen8_set_seqno;
ring->emit_request = gen8_emit_request;
return logical_ring_init(dev, ring);
}
@ -442,6 +469,7 @@ static int logical_bsd_ring_init(struct drm_device *dev)
ring->init = gen8_init_common_ring;
ring->get_seqno = gen8_get_seqno;
ring->set_seqno = gen8_set_seqno;
ring->emit_request = gen8_emit_request;
return logical_ring_init(dev, ring);
}
@ -460,6 +488,7 @@ static int logical_bsd2_ring_init(struct drm_device *dev)
ring->init = gen8_init_common_ring;
ring->get_seqno = gen8_get_seqno;
ring->set_seqno = gen8_set_seqno;
ring->emit_request = gen8_emit_request;
return logical_ring_init(dev, ring);
}
@ -478,6 +507,7 @@ static int logical_blt_ring_init(struct drm_device *dev)
ring->init = gen8_init_common_ring;
ring->get_seqno = gen8_get_seqno;
ring->set_seqno = gen8_set_seqno;
ring->emit_request = gen8_emit_request;
return logical_ring_init(dev, ring);
}
@ -496,6 +526,7 @@ static int logical_vebox_ring_init(struct drm_device *dev)
ring->init = gen8_init_common_ring;
ring->get_seqno = gen8_get_seqno;
ring->set_seqno = gen8_set_seqno;
ring->emit_request = gen8_emit_request;
return logical_ring_init(dev, ring);
}

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

@ -216,6 +216,9 @@ struct intel_engine_cs {
unsigned int num_dwords);
} semaphore;
/* Execlists */
int (*emit_request)(struct intel_ringbuffer *ringbuf);
/**
* List of objects currently involved in rendering from the
* ringbuffer.