diff options
| -rw-r--r-- | drivers/gpu/drm/xe/xe_lrc.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_lrc.c b/drivers/gpu/drm/xe/xe_lrc.c index 3a169011a2ad..6d38411bdeba 100644 --- a/drivers/gpu/drm/xe/xe_lrc.c +++ b/drivers/gpu/drm/xe/xe_lrc.c @@ -43,6 +43,30 @@ #define LRC_INDIRECT_RING_STATE_SIZE SZ_4K #define LRC_WA_BB_SIZE SZ_4K +/* + * Layout of the LRC and associated data allocated as + * lrc->bo: + * + * Region Size + * +============================+=================================+ <- __xe_lrc_ring_offset() + * | Ring | ring_size, see | + * | | xe_lrc_init() | + * +============================+=================================+ <- __xe_lrc_pphwsp_offset() + * | PPHWSP (includes SW state) | 4K | + * +----------------------------+---------------------------------+ <- __xe_lrc_regs_offset() + * | Engine Context Image | n * 4K, see | + * | | xe_gt_lrc_size() | + * +----------------------------+---------------------------------+ <- __xe_lrc_indirect_ring_offset() + * | Indirect Ring State Page | 0 or 4k, see | + * | | XE_LRC_FLAG_INDIRECT_RING_STATE | + * +============================+=================================+ <- __xe_lrc_indirect_ctx_offset() + * | Indirect Context Page | 0 or 4k, see | + * | | XE_LRC_FLAG_INDIRECT_CTX | + * +============================+=================================+ <- __xe_lrc_wa_bb_offset() + * | WA BB Per Ctx | 4k | + * +============================+=================================+ <- xe_bo_size(lrc->bo) + */ + static struct xe_device * lrc_to_xe(struct xe_lrc *lrc) { |