On 8/8/2022 5:00 PM, Christian König wrote:
Am 25.07.22 um 13:42 schrieb Arunpravin Paneer Selvam:
Implemented a new intersect and compatible callback functions
to ttm range manager fetching start offset from drm mm range
allocator.
Signed-off-by: Christian König <christian.koenig@xxxxxxx>
Signed-off-by: Arunpravin Paneer Selvam
<Arunpravin.PaneerSelvam@xxxxxxx>
---
drivers/gpu/drm/ttm/ttm_range_manager.c | 33 +++++++++++++++++++++++++
1 file changed, 33 insertions(+)
diff --git a/drivers/gpu/drm/ttm/ttm_range_manager.c
b/drivers/gpu/drm/ttm/ttm_range_manager.c
index d91666721dc6..12b8d9b36fe6 100644
--- a/drivers/gpu/drm/ttm/ttm_range_manager.c
+++ b/drivers/gpu/drm/ttm/ttm_range_manager.c
@@ -113,6 +113,37 @@ static void ttm_range_man_free(struct
ttm_resource_manager *man,
kfree(node);
}
+static bool ttm_range_man_intersect(struct ttm_resource_manager *man,
+ struct ttm_resource *res,
+ const struct ttm_place *place,
+ size_t size)
+{
+ struct drm_mm_node *node =
&to_ttm_range_mgr_node(res)->mm_nodes[0];
+ u32 num_pages = PFN_UP(size);
+
+ /* Don't evict BOs outside of the requested placement range */
+ if (place->fpfn >= (node->start + num_pages) ||
+ (place->lpfn && place->lpfn <= node->start))
+ return false;
+
+ return true;
+}
+
+static bool ttm_range_man_compatible(struct ttm_resource_manager *man,
+ struct ttm_resource *res,
+ const struct ttm_place *place,
+ size_t size)
+{
+ struct drm_mm_node *node =
&to_ttm_range_mgr_node(res)->mm_nodes[0];
+ u32 num_pages = PFN_UP(size);
+
+ if (node->start < place->fpfn ||
This should probably be "<=".
We are checking the false condition here, if node->start == place->fpfn,
then the node->start
value is compatible with place->fpfn, therefore, we don't return false.
Thanks,
Arun
Regards,
Christian.
+ (place->lpfn && (node->start + num_pages) > place->lpfn))
+ return false;
+
+ return true;
+}
+
static void ttm_range_man_debug(struct ttm_resource_manager *man,
struct drm_printer *printer)
{
@@ -126,6 +157,8 @@ static void ttm_range_man_debug(struct
ttm_resource_manager *man,
static const struct ttm_resource_manager_func
ttm_range_manager_func = {
.alloc = ttm_range_man_alloc,
.free = ttm_range_man_free,
+ .intersect = ttm_range_man_intersect,
+ .compatible = ttm_range_man_compatible,
.debug = ttm_range_man_debug
};
