diff options
Diffstat (limited to 'src/gallium/drivers/iris/iris_bufmgr.h')
| -rw-r--r-- | src/gallium/drivers/iris/iris_bufmgr.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/gallium/drivers/iris/iris_bufmgr.h b/src/gallium/drivers/iris/iris_bufmgr.h index 48ea7da9a5f..05d0f922951 100644 --- a/src/gallium/drivers/iris/iris_bufmgr.h +++ b/src/gallium/drivers/iris/iris_bufmgr.h @@ -329,5 +329,21 @@ int iris_reg_read(struct iris_bufmgr *bufmgr, uint32_t offset, uint64_t *out); int drm_ioctl(int fd, unsigned long request, void *arg); +/** + * Returns the BO's address relative to the appropriate base address. + * + * All of our base addresses are programmed to the start of a 4GB region, + * so simply returning the bottom 32 bits of the BO address will give us + * the offset from whatever base address corresponds to that memory region. + */ +static inline uint32_t +iris_bo_offset_from_base_address(struct iris_bo *bo) +{ + /* This only works for buffers in the memory zones corresponding to a + * base address - the top, unbounded memory zone doesn't have a base. + */ + assert(bo->gtt_offset < IRIS_MEMZONE_OTHER_START); + return bo->gtt_offset; +} #endif /* IRIS_BUFMGR_H */ |