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#include "i915_drm_winsys.h"
#include "util/u_memory.h"
#include "i915_drm.h"
#define BATCH_RESERVED 16
#define INTEL_DEFAULT_RELOCS 100
#define INTEL_MAX_RELOCS 400
#define INTEL_BATCH_NO_CLIPRECTS 0x1
#define INTEL_BATCH_CLIPRECTS 0x2
#undef INTEL_RUN_SYNC
#undef INTEL_MAP_BATCHBUFFER
#undef INTEL_MAP_GTT
#define INTEL_ALWAYS_FLUSH
struct i915_drm_batchbuffer
{
struct i915_winsys_batchbuffer base;
size_t actual_size;
drm_intel_bo *bo;
};
static INLINE struct i915_drm_batchbuffer *
i915_drm_batchbuffer(struct i915_winsys_batchbuffer *batch)
{
return (struct i915_drm_batchbuffer *)batch;
}
static void
i915_drm_batchbuffer_reset(struct i915_drm_batchbuffer *batch)
{
struct i915_drm_winsys *idws = i915_drm_winsys(batch->base.iws);
int ret;
if (batch->bo)
drm_intel_bo_unreference(batch->bo);
batch->bo = drm_intel_bo_alloc(idws->pools.gem,
"gallium3d_batchbuffer",
batch->actual_size,
4096);
#ifdef INTEL_MAP_BATCHBUFFER
#ifdef INTEL_MAP_GTT
ret = drm_intel_gem_bo_map_gtt(batch->bo);
#else
ret = drm_intel_bo_map(batch->bo, TRUE);
#endif
assert(ret == 0);
batch->base.map = batch->bo->virtual;
#else
(void)ret;
#endif
memset(batch->base.map, 0, batch->actual_size);
batch->base.ptr = batch->base.map;
batch->base.size = batch->actual_size - BATCH_RESERVED;
batch->base.relocs = 0;
}
static struct i915_winsys_batchbuffer *
i915_drm_batchbuffer_create(struct i915_winsys *iws)
{
struct i915_drm_winsys *idws = i915_drm_winsys(iws);
struct i915_drm_batchbuffer *batch = CALLOC_STRUCT(i915_drm_batchbuffer);
batch->actual_size = idws->max_batch_size;
#ifdef INTEL_MAP_BATCHBUFFER
batch->base.map = NULL;
#else
batch->base.map = MALLOC(batch->actual_size);
#endif
batch->base.ptr = NULL;
batch->base.size = 0;
batch->base.relocs = 0;
batch->base.max_relocs = 300;/*INTEL_DEFAULT_RELOCS;*/
batch->base.iws = iws;
i915_drm_batchbuffer_reset(batch);
return &batch->base;
}
static int
i915_drm_batchbuffer_reloc(struct i915_winsys_batchbuffer *ibatch,
struct i915_winsys_buffer *buffer,
enum i915_winsys_buffer_usage usage,
unsigned pre_add)
{
struct i915_drm_batchbuffer *batch = i915_drm_batchbuffer(ibatch);
unsigned write_domain = 0;
unsigned read_domain = 0;
unsigned offset;
int ret = 0;
assert(batch->base.relocs < batch->base.max_relocs);
if (usage == I915_USAGE_SAMPLER) {
write_domain = 0;
read_domain = I915_GEM_DOMAIN_SAMPLER;
} else if (usage == I915_USAGE_RENDER) {
write_domain = I915_GEM_DOMAIN_RENDER;
read_domain = I915_GEM_DOMAIN_RENDER;
} else if (usage == I915_USAGE_2D_TARGET) {
write_domain = I915_GEM_DOMAIN_RENDER;
read_domain = I915_GEM_DOMAIN_RENDER;
} else if (usage == I915_USAGE_2D_SOURCE) {
write_domain = 0;
read_domain = I915_GEM_DOMAIN_RENDER;
} else if (usage == I915_USAGE_VERTEX) {
write_domain = 0;
read_domain = I915_GEM_DOMAIN_VERTEX;
} else {
assert(0);
return -1;
}
offset = (unsigned)(batch->base.ptr - batch->base.map);
ret = drm_intel_bo_emit_reloc(batch->bo, offset,
intel_bo(buffer), pre_add,
read_domain,
write_domain);
((uint32_t*)batch->base.ptr)[0] = intel_bo(buffer)->offset + pre_add;
batch->base.ptr += 4;
if (!ret)
batch->base.relocs++;
return ret;
}
static void
i915_drm_batchbuffer_flush(struct i915_winsys_batchbuffer *ibatch,
struct pipe_fence_handle **fence)
{
struct i915_drm_batchbuffer *batch = i915_drm_batchbuffer(ibatch);
unsigned used = 0;
int ret = 0;
int i;
assert(i915_winsys_batchbuffer_space(ibatch) >= 0);
used = batch->base.ptr - batch->base.map;
assert((used & 3) == 0);
#ifdef INTEL_ALWAYS_FLUSH
/* MI_FLUSH | FLUSH_MAP_CACHE */
i915_winsys_batchbuffer_dword(ibatch, (0x4<<23)|(1<<0));
used += 4;
#endif
if ((used & 4) == 0) {
/* MI_NOOP */
i915_winsys_batchbuffer_dword(ibatch, 0);
}
/* MI_BATCH_BUFFER_END */
i915_winsys_batchbuffer_dword(ibatch, (0xA<<23));
used = batch->base.ptr - batch->base.map;
assert((used & 4) == 0);
#ifdef INTEL_MAP_BATCHBUFFER
#ifdef INTEL_MAP_GTT
drm_intel_gem_bo_unmap_gtt(batch->bo);
#else
drm_intel_bo_unmap(batch->bo);
#endif
#else
drm_intel_bo_subdata(batch->bo, 0, used, batch->base.map);
#endif
/* Do the sending to HW */
ret = drm_intel_bo_exec(batch->bo, used, NULL, 0, 0);
assert(ret == 0);
if (i915_drm_winsys(ibatch->iws)->dump_cmd) {
unsigned *ptr;
drm_intel_bo_map(batch->bo, FALSE);
ptr = (unsigned*)batch->bo->virtual;
debug_printf("%s:\n", __func__);
for (i = 0; i < used / 4; i++, ptr++) {
debug_printf("\t%08x: %08x\n", i*4, *ptr);
}
drm_intel_bo_unmap(batch->bo);
} else {
#ifdef INTEL_RUN_SYNC
drm_intel_bo_map(batch->bo, FALSE);
drm_intel_bo_unmap(batch->bo);
#endif
}
if (fence) {
ibatch->iws->fence_reference(ibatch->iws, fence, NULL);
#ifdef INTEL_RUN_SYNC
/* we run synced to GPU so just pass null */
(*fence) = i915_drm_fence_create(NULL);
#else
(*fence) = i915_drm_fence_create(batch->bo);
#endif
}
i915_drm_batchbuffer_reset(batch);
}
static void
i915_drm_batchbuffer_destroy(struct i915_winsys_batchbuffer *ibatch)
{
struct i915_drm_batchbuffer *batch = i915_drm_batchbuffer(ibatch);
if (batch->bo)
drm_intel_bo_unreference(batch->bo);
#ifndef INTEL_MAP_BATCHBUFFER
FREE(batch->base.map);
#endif
FREE(batch);
}
void i915_drm_winsys_init_batchbuffer_functions(struct i915_drm_winsys *idws)
{
idws->base.batchbuffer_create = i915_drm_batchbuffer_create;
idws->base.batchbuffer_reloc = i915_drm_batchbuffer_reloc;
idws->base.batchbuffer_flush = i915_drm_batchbuffer_flush;
idws->base.batchbuffer_destroy = i915_drm_batchbuffer_destroy;
}
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