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#include "state_tracker/drm_api.h"
#include "intel_drm_winsys.h"
#include "util/u_memory.h"
#include "i915_drm.h"
static struct intel_buffer *
intel_drm_buffer_create(struct intel_winsys *iws,
unsigned size, unsigned alignment,
enum intel_buffer_type type)
{
struct intel_drm_buffer *buf = CALLOC_STRUCT(intel_drm_buffer);
struct intel_drm_winsys *idws = intel_drm_winsys(iws);
drm_intel_bufmgr *pool;
char *name;
if (!buf)
return NULL;
buf->magic = 0xDEAD1337;
buf->flinked = FALSE;
buf->flink = 0;
buf->map_gtt = FALSE;
if (type == INTEL_NEW_TEXTURE) {
name = "gallium3d_texture";
pool = idws->pools.gem;
} else if (type == INTEL_NEW_VERTEX) {
name = "gallium3d_vertex";
pool = idws->pools.gem;
buf->map_gtt = TRUE;
} else if (type == INTEL_NEW_SCANOUT) {
name = "gallium3d_scanout";
pool = idws->pools.gem;
buf->map_gtt = TRUE;
} else {
assert(0);
name = "gallium3d_unknown";
pool = idws->pools.gem;
}
buf->bo = drm_intel_bo_alloc(pool, name, size, alignment);
if (!buf->bo)
goto err;
return (struct intel_buffer *)buf;
err:
assert(0);
FREE(buf);
return NULL;
}
static struct intel_buffer *
intel_drm_buffer_from_handle(struct intel_winsys *iws,
struct winsys_handle *whandle,
unsigned *stride)
{
struct intel_drm_winsys *idws = intel_drm_winsys(iws);
struct intel_drm_buffer *buf = CALLOC_STRUCT(intel_drm_buffer);
uint32_t tile = 0, swizzle = 0;
if (!buf)
return NULL;
buf->magic = 0xDEAD1337;
buf->bo = drm_intel_bo_gem_create_from_name(idws->pools.gem, "gallium3d_from_handle", whandle->handle);
buf->flinked = TRUE;
buf->flink = whandle->handle;
if (!buf->bo)
goto err;
drm_intel_bo_get_tiling(buf->bo, &tile, &swizzle);
if (tile != INTEL_TILE_NONE)
buf->map_gtt = TRUE;
*stride = whandle->stride;
return (struct intel_buffer *)buf;
err:
FREE(buf);
return NULL;
}
static boolean
intel_drm_buffer_get_handle(struct intel_winsys *iws,
struct intel_buffer *buffer,
struct winsys_handle *whandle,
unsigned stride)
{
struct intel_drm_buffer *buf = intel_drm_buffer(buffer);
if (whandle->type == DRM_API_HANDLE_TYPE_SHARED) {
if (!buf->flinked) {
if (drm_intel_bo_flink(buf->bo, &buf->flink))
return FALSE;
buf->flinked = TRUE;
}
whandle->handle = buf->flink;
} else if (whandle->type == DRM_API_HANDLE_TYPE_KMS) {
whandle->handle = buf->bo->handle;
} else {
assert(!"unknown usage");
return FALSE;
}
whandle->stride = stride;
return TRUE;
}
static int
intel_drm_buffer_set_fence_reg(struct intel_winsys *iws,
struct intel_buffer *buffer,
unsigned stride,
enum intel_buffer_tile tile)
{
struct intel_drm_buffer *buf = intel_drm_buffer(buffer);
assert(I915_TILING_NONE == INTEL_TILE_NONE);
assert(I915_TILING_X == INTEL_TILE_X);
assert(I915_TILING_Y == INTEL_TILE_Y);
if (tile != INTEL_TILE_NONE) {
assert(buf->map_count == 0);
buf->map_gtt = TRUE;
}
return drm_intel_bo_set_tiling(buf->bo, &tile, stride);
}
static void *
intel_drm_buffer_map(struct intel_winsys *iws,
struct intel_buffer *buffer,
boolean write)
{
struct intel_drm_buffer *buf = intel_drm_buffer(buffer);
drm_intel_bo *bo = intel_bo(buffer);
int ret = 0;
assert(bo);
if (buf->map_count)
goto out;
if (buf->map_gtt)
ret = drm_intel_gem_bo_map_gtt(bo);
else
ret = drm_intel_bo_map(bo, write);
buf->ptr = bo->virtual;
assert(ret == 0);
out:
if (ret)
return NULL;
buf->map_count++;
return buf->ptr;
}
static void
intel_drm_buffer_unmap(struct intel_winsys *iws,
struct intel_buffer *buffer)
{
struct intel_drm_buffer *buf = intel_drm_buffer(buffer);
if (--buf->map_count)
return;
if (buf->map_gtt)
drm_intel_gem_bo_unmap_gtt(intel_bo(buffer));
else
drm_intel_bo_unmap(intel_bo(buffer));
}
static int
intel_drm_buffer_write(struct intel_winsys *iws,
struct intel_buffer *buffer,
size_t offset,
size_t size,
const void *data)
{
struct intel_drm_buffer *buf = intel_drm_buffer(buffer);
return drm_intel_bo_subdata(buf->bo, offset, size, (void*)data);
}
static void
intel_drm_buffer_destroy(struct intel_winsys *iws,
struct intel_buffer *buffer)
{
drm_intel_bo_unreference(intel_bo(buffer));
#ifdef DEBUG
intel_drm_buffer(buffer)->magic = 0;
intel_drm_buffer(buffer)->bo = NULL;
#endif
FREE(buffer);
}
void
intel_drm_winsys_init_buffer_functions(struct intel_drm_winsys *idws)
{
idws->base.buffer_create = intel_drm_buffer_create;
idws->base.buffer_from_handle = intel_drm_buffer_from_handle;
idws->base.buffer_get_handle = intel_drm_buffer_get_handle;
idws->base.buffer_set_fence_reg = intel_drm_buffer_set_fence_reg;
idws->base.buffer_map = intel_drm_buffer_map;
idws->base.buffer_unmap = intel_drm_buffer_unmap;
idws->base.buffer_write = intel_drm_buffer_write;
idws->base.buffer_destroy = intel_drm_buffer_destroy;
}
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