diff options
Diffstat (limited to 'src/gallium/winsys/i915/drm/intel_drm_buffer.c')
| -rw-r--r-- | src/gallium/winsys/i915/drm/intel_drm_buffer.c | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/src/gallium/winsys/i915/drm/intel_drm_buffer.c b/src/gallium/winsys/i915/drm/intel_drm_buffer.c new file mode 100644 index 00000000000..cb4f92a3b17 --- /dev/null +++ b/src/gallium/winsys/i915/drm/intel_drm_buffer.c @@ -0,0 +1,217 @@ + +#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; +} |