[PATCH v3 24/30] drm/xe: Add Xe SVM devmem_release GPU SVM vfunc

[Matthew Brost]

Implement with a simple BO put which releases the device memory.

v2:
 - Use new drm_gpusvm_devmem_ops
v3:
 - Better commit message (Thomas)

Signed-off-by: Matthew Brost <matthew.brost at intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom at linux.intel.com>
---
 drivers/gpu/drm/xe/xe_svm.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/xe/xe_svm.c b/drivers/gpu/drm/xe/xe_svm.c
index 16d526b2d19a..466a0b8cbfa8 100644
--- a/drivers/gpu/drm/xe/xe_svm.c
+++ b/drivers/gpu/drm/xe/xe_svm.c
@@ -3,6 +3,7 @@
  * Copyright © 2024 Intel Corporation
  */
 
+#include "xe_bo.h"
 #include "xe_gt_tlb_invalidation.h"
 #include "xe_migrate.h"
 #include "xe_pt.h"
@@ -460,6 +461,11 @@ static struct xe_bo *to_xe_bo(struct drm_gpusvm_devmem *devmem_allocation)
 	return container_of(devmem_allocation, struct xe_bo, devmem_allocation);
 }
 
+static void xe_svm_devmem_release(struct drm_gpusvm_devmem *devmem_allocation)
+{
+	xe_bo_put(to_xe_bo(devmem_allocation));
+}
+
 static u64 block_offset_to_pfn(struct xe_mem_region *mr, u64 offset)
 {
 	return PHYS_PFN(offset + mr->hpa_base);
@@ -495,6 +501,7 @@ static int xe_svm_populate_devmem_pfn(struct drm_gpusvm_devmem *devmem_allocatio
 
 __maybe_unused
 static const struct drm_gpusvm_devmem_ops gpusvm_devmem_ops = {
+	.devmem_release = xe_svm_devmem_release,
 	.populate_devmem_pfn = xe_svm_populate_devmem_pfn,
 	.copy_to_devmem = xe_svm_copy_to_devmem,
 	.copy_to_ram = xe_svm_copy_to_ram,
-- 
2.34.1