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/*
* Copyright © 2011-2013 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Authors:
* Chris Wilson <chris@chris-wilson.co.uk>
*
*/
#ifndef GEN6_COMMON_H
#define GEN6_COMMON_H
#include "sna.h"
#define NO_RING_SWITCH(sna) (!(sna)->kgem.has_semaphores)
#define PREFER_RENDER 0 /* -1 -> BLT, 1 -> RENDER */
static inline bool is_uncached(struct sna *sna,
struct kgem_bo *bo)
{
return bo->io || (bo->scanout && !sna->kgem.has_wt);
}
inline static bool can_switch_to_blt(struct sna *sna,
struct kgem_bo *bo,
unsigned flags)
{
if (sna->kgem.ring != KGEM_RENDER)
return true;
if (NO_RING_SWITCH(sna))
return false;
if (bo && RQ_IS_BLT(bo->rq))
return true;
if (bo && bo->tiling == I915_TILING_Y)
return false;
if (sna->render_state.gt < 2)
return true;
if (bo && RQ_IS_RENDER(bo->rq))
return false;
if (flags & COPY_LAST)
return true;
return kgem_ring_is_idle(&sna->kgem, KGEM_BLT);
}
static inline bool untiled_tlb_miss(struct kgem_bo *bo)
{
if (kgem_bo_is_render(bo))
return false;
return bo->tiling == I915_TILING_NONE && bo->pitch >= 4096;
}
static int prefer_blt_bo(struct sna *sna,
struct kgem_bo *src,
struct kgem_bo *dst)
{
assert(dst != NULL);
if (PREFER_RENDER)
return PREFER_RENDER < 0;
if (dst->rq)
return RQ_IS_BLT(dst->rq);
if (sna->flags & SNA_POWERSAVE)
return true;
if (src) {
if (sna->render_state.gt > 1)
return false;
if (src->rq)
return RQ_IS_BLT(src->rq);
if (src->tiling == I915_TILING_Y)
return false;
} else {
if (sna->render_state.gt > 2)
return false;
}
if (sna->render_state.gt < 2)
return true;
return dst->tiling == I915_TILING_NONE || is_uncached(sna, dst);
}
inline static bool force_blt_ring(struct sna *sna)
{
if (sna->kgem.mode == KGEM_RENDER)
return false;
if (NO_RING_SWITCH(sna))
return sna->kgem.ring == KGEM_BLT;
if (sna->flags & SNA_POWERSAVE)
return true;
if (sna->render_state.gt < 2)
return true;
return false;
}
nonnull inline static bool
prefer_blt_ring(struct sna *sna, struct kgem_bo *bo, unsigned flags)
{
if (PREFER_RENDER)
return PREFER_RENDER < 0;
assert(!force_blt_ring(sna));
assert(!kgem_bo_is_render(bo) || NO_RING_SWITCH(sna));
if (kgem_bo_is_blt(bo))
return true;
return can_switch_to_blt(sna, bo, flags);
}
nonnull inline static bool
prefer_render_ring(struct sna *sna, struct kgem_bo *bo)
{
if (sna->kgem.ring == KGEM_RENDER)
return true;
if (sna->kgem.ring != KGEM_NONE && NO_RING_SWITCH(sna))
return false;
if (kgem_bo_is_render(bo))
return true;
if (sna->flags & SNA_POWERSAVE)
return false;
if (!prefer_blt_bo(sna, NULL, bo))
return true;
return !kgem_ring_is_idle(&sna->kgem, KGEM_RENDER);
}
inline static bool
prefer_blt_composite(struct sna *sna, struct sna_composite_op *tmp)
{
if (PREFER_RENDER)
return PREFER_RENDER < 0;
if (untiled_tlb_miss(tmp->dst.bo) ||
untiled_tlb_miss(tmp->src.bo))
return true;
if (force_blt_ring(sna))
return true;
if (prefer_render_ring(sna, tmp->dst.bo))
return false;
if (!prefer_blt_ring(sna, tmp->dst.bo, 0))
return false;
return prefer_blt_bo(sna, tmp->src.bo, tmp->dst.bo);
}
nonnull static inline bool
prefer_blt_fill(struct sna *sna, struct kgem_bo *bo, unsigned flags)
{
if (PREFER_RENDER)
return PREFER_RENDER < 0;
if (untiled_tlb_miss(bo))
return true;
if (force_blt_ring(sna))
return true;
if ((flags & (FILL_POINTS | FILL_SPANS)) == 0) {
if (prefer_render_ring(sna, bo))
return false;
if (!prefer_blt_ring(sna, bo, 0))
return false;
} else {
if (can_switch_to_blt(sna, bo, 0))
return true;
}
return prefer_blt_bo(sna, NULL, bo);
}
void gen6_render_context_switch(struct kgem *kgem, int new_mode);
void gen6_render_retire(struct kgem *kgem);
#endif /* GEN6_COMMON_H */
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