[igt-dev] [i-g-t V4 08/46] lib/intel_batchbuffer: Update intel-bb docs

[Bhanuprakash Modem]

From: Zbigniew Kempczyński <zbigniew.kempczynski at intel.com>

After RANDOM pseudo-allocator was removed and RELOC allocator becomed
stateful docs stays intact and documents old code. Fix this before
adding xe code.

Signed-off-by: Zbigniew Kempczyński <zbigniew.kempczynski at intel.com>
---
 lib/intel_batchbuffer.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/lib/intel_batchbuffer.c b/lib/intel_batchbuffer.c
index 7dbd6dd58..306b7650e 100644
--- a/lib/intel_batchbuffer.c
+++ b/lib/intel_batchbuffer.c
@@ -836,7 +836,7 @@ static inline uint64_t __intel_bb_get_offset(struct intel_bb *ibb,
  * @allocator_type: allocator type, must be INTEL_ALLOCATOR_NONE for relocations
  *
  * intel-bb assumes it will work in one of two modes - with relocations or
- * with using allocator (currently RANDOM and SIMPLE are implemented).
+ * with using allocator (currently RELOC and SIMPLE are implemented).
  * Some description is required to describe how they maintain the addresses.
  *
  * Before entering into each scenarios generic rule is intel-bb keeps objects
@@ -854,10 +854,10 @@ static inline uint64_t __intel_bb_get_offset(struct intel_bb *ibb,
  *
  * This mode is valid only for ppgtt. Addresses are acquired from allocator
  * and softpinned. intel-bb cache must be then coherent with allocator
- * (simple is coherent, random is not due to fact we don't keep its state).
+ * (simple is coherent, reloc partially [doesn't support address reservation]).
  * When we do intel-bb reset with purging cache it has to reacquire addresses
  * from allocator (allocator should return same address - what is true for
- * simple allocator and false for random as mentioned before).
+ * simple and reloc allocators).
  *
  * If we do reset without purging caches we use addresses from intel-bb cache
  * during execbuf objects construction.
@@ -967,7 +967,7 @@ __intel_bb_create(int fd, uint32_t ctx, const intel_ctx_cfg_t *cfg,
  * @size: size of the batchbuffer
  * @start: allocator vm start address
  * @end: allocator vm start address
- * @allocator_type: allocator type, SIMPLE, RANDOM, ...
+ * @allocator_type: allocator type, SIMPLE, RELOC, ...
  * @strategy: allocation strategy
  *
  * Creates bb with context passed in @ctx, size in @size and allocator type
@@ -1280,8 +1280,9 @@ void intel_bb_reset(struct intel_bb *ibb, bool purge_objects_cache)
 	gem_close(ibb->fd, ibb->handle);
 	ibb->handle = gem_create(ibb->fd, ibb->size);
 
-	/* Keep address for bb in reloc mode and RANDOM allocator */
-	if (ibb->allocator_type == INTEL_ALLOCATOR_SIMPLE)
+	/* Reacquire offset for RELOC and SIMPLE */
+	if (ibb->allocator_type == INTEL_ALLOCATOR_SIMPLE ||
+	    ibb->allocator_type == INTEL_ALLOCATOR_RELOC)
 		ibb->batch_offset = __intel_bb_get_offset(ibb,
 							  ibb->handle,
 							  ibb->size,
-- 
2.40.0