Parameterize clearing ccs and bo data in xe_migrate_clear() which higher
layers can utilize. This patch will be used later on when doing bo data
clear for igfx as well.
v2: Replace multiple params with flags in xe_migrate_clear (Matt B)
v3: s/CLEAR_BO_DATA_FLAG_*/XE_MIGRATE_CLEAR_FLAG_* and move to
xe_migrate.h. other nits(Matt B)
Cc: Himal Prasad Ghimiray <himal.prasad.ghimi...@intel.com>
Cc: Matthew Auld <matthew.a...@intel.com>
Cc: Matthew Brost <matthew.br...@intel.com>
Cc: "Thomas Hellström" <thomas.hellst...@linux.intel.com>
Signed-off-by: Nirmoy Das <nirmoy....@intel.com>
Signed-off-by: Akshata Jahagirdar <akshata.jahagir...@intel.com>
---
drivers/gpu/drm/xe/tests/xe_bo.c | 3 ++-
drivers/gpu/drm/xe/tests/xe_migrate.c | 12 ++++++++----
drivers/gpu/drm/xe/xe_bo.c | 12 ++++++++++--
drivers/gpu/drm/xe/xe_migrate.c | 27 +++++++++++++++++++--------
drivers/gpu/drm/xe/xe_migrate.h | 7 ++++++-
5 files changed, 45 insertions(+), 16 deletions(-)
diff --git a/drivers/gpu/drm/xe/tests/xe_bo.c b/drivers/gpu/drm/xe/tests/xe_bo.c
index e2e0ea24757a..600d1772fa87 100644
--- a/drivers/gpu/drm/xe/tests/xe_bo.c
+++ b/drivers/gpu/drm/xe/tests/xe_bo.c
@@ -35,7 +35,8 @@ static int ccs_test_migrate(struct xe_tile *tile, struct
xe_bo *bo,
/* Optionally clear bo *and* CCS data in VRAM. */
if (clear) {
- fence = xe_migrate_clear(tile->migrate, bo, bo->ttm.resource);
+ fence = xe_migrate_clear(tile->migrate, bo, bo->ttm.resource,
+ XE_MIGRATE_CLEAR_FLAG_FULL);
if (IS_ERR(fence)) {
KUNIT_FAIL(test, "Failed to submit bo clear.\n");
return PTR_ERR(fence);
diff --git a/drivers/gpu/drm/xe/tests/xe_migrate.c
b/drivers/gpu/drm/xe/tests/xe_migrate.c
index 48bf7e831014..12a26cf1a521 100644
--- a/drivers/gpu/drm/xe/tests/xe_migrate.c
+++ b/drivers/gpu/drm/xe/tests/xe_migrate.c
@@ -104,7 +104,8 @@ static void test_copy(struct xe_migrate *m, struct xe_bo
*bo,
}
xe_map_memset(xe, &remote->vmap, 0, 0xd0, remote->size);
- fence = xe_migrate_clear(m, remote, remote->ttm.resource);
+ fence = xe_migrate_clear(m, remote, remote->ttm.resource,
+ XE_MIGRATE_CLEAR_FLAG_FULL);
if (!sanity_fence_failed(xe, fence, big ? "Clearing remote big bo" :
"Clearing remote small bo", test)) {
retval = xe_map_rd(xe, &remote->vmap, 0, u64);
@@ -278,7 +279,8 @@ static void xe_migrate_sanity_test(struct xe_migrate *m,
struct kunit *test)
kunit_info(test, "Clearing small buffer object\n");
xe_map_memset(xe, &tiny->vmap, 0, 0x22, tiny->size);
expected = 0;
- fence = xe_migrate_clear(m, tiny, tiny->ttm.resource);
+ fence = xe_migrate_clear(m, tiny, tiny->ttm.resource,
+ XE_MIGRATE_CLEAR_FLAG_FULL);
if (sanity_fence_failed(xe, fence, "Clearing small bo", test))
goto out;
@@ -299,7 +301,8 @@ static void xe_migrate_sanity_test(struct xe_migrate *m,
struct kunit *test)
kunit_info(test, "Clearing big buffer object\n");
xe_map_memset(xe, &big->vmap, 0, 0x11, big->size);
expected = 0;
- fence = xe_migrate_clear(m, big, big->ttm.resource);
+ fence = xe_migrate_clear(m, big, big->ttm.resource,
+ XE_MIGRATE_CLEAR_FLAG_FULL);
if (sanity_fence_failed(xe, fence, "Clearing big bo", test))
goto out;
@@ -600,7 +603,8 @@ static void test_clear(struct xe_device *xe, struct xe_tile
*tile,
kunit_info(test, "Clear vram buffer object\n");
expected = 0x0000000000000000;
- fence = xe_migrate_clear(tile->migrate, vram_bo, vram_bo->ttm.resource);
+ fence = xe_migrate_clear(tile->migrate, vram_bo, vram_bo->ttm.resource,
+ XE_MIGRATE_CLEAR_FLAG_FULL);
if (sanity_fence_failed(xe, fence, "Clear vram_bo", test))
return;
dma_fence_put(fence);
diff --git a/drivers/gpu/drm/xe/xe_bo.c b/drivers/gpu/drm/xe/xe_bo.c
index 31192d983d9e..0b7202dd4c9e 100644
--- a/drivers/gpu/drm/xe/xe_bo.c
+++ b/drivers/gpu/drm/xe/xe_bo.c
@@ -793,8 +793,16 @@ static int xe_bo_move(struct ttm_buffer_object *ttm_bo,
bool evict,
}
}
} else {
- if (move_lacks_source)
- fence = xe_migrate_clear(migrate, bo, new_mem);
+ if (move_lacks_source) {
+ u32 flags = 0;
+
+ if (mem_type_is_vram(new_mem->mem_type))
+ flags |= XE_MIGRATE_CLEAR_FLAG_FULL;
+ else if (handle_system_ccs)
+ flags |= XE_MIGRATE_CLEAR_FLAG_CCS_DATA;
+
+ fence = xe_migrate_clear(migrate, bo, new_mem, flags);
+ }
else
fence = xe_migrate_copy(migrate, bo, bo, old_mem,
new_mem, handle_system_ccs);
diff --git a/drivers/gpu/drm/xe/xe_migrate.c b/drivers/gpu/drm/xe/xe_migrate.c
index c007f68503d4..0ea0bc692c55 100644
--- a/drivers/gpu/drm/xe/xe_migrate.c
+++ b/drivers/gpu/drm/xe/xe_migrate.c
@@ -1036,9 +1036,11 @@ static void emit_clear(struct xe_gt *gt, struct xe_bb
*bb, u64 src_ofs,
* @m: The migration context.
* @bo: The buffer object @dst is currently bound to.
* @dst: The dst TTM resource to be cleared.
+ * @clear_flags: flags to specify which data to clear: CCS, BO, or both.
*
- * Clear the contents of @dst to zero. On flat CCS devices,
- * the CCS metadata is cleared to zero as well on VRAM destinations.
+ * Clear the contents of @dst to zero when XE_MIGRATE_CLEAR_FLAG_BO_DATA is
set.
+ * On flat CCS devices, the CCS metadata is cleared to zero with
XE_MIGRATE_CLEAR_FLAG_CCS_DATA.
+ * Set XE_MIGRATE_CLEAR_FLAG_FULL to clear bo as well as CCS metadata.
* TODO: Eliminate the @bo argument.
*
* Return: Pointer to a dma_fence representing the last clear batch, or
@@ -1047,18 +1049,27 @@ static void emit_clear(struct xe_gt *gt, struct xe_bb
*bb, u64 src_ofs,
*/
struct dma_fence *xe_migrate_clear(struct xe_migrate *m,
struct xe_bo *bo,
- struct ttm_resource *dst)
+ struct ttm_resource *dst,
+ u32 clear_flags)
{
bool clear_vram = mem_type_is_vram(dst->mem_type);
+ bool clear_bo_data = XE_MIGRATE_CLEAR_FLAG_BO_DATA & clear_flags;
+ bool clear_ccs = XE_MIGRATE_CLEAR_FLAG_CCS_DATA & clear_flags;
struct xe_gt *gt = m->tile->primary_gt;
struct xe_device *xe = gt_to_xe(gt);
- bool clear_system_ccs = (xe_bo_needs_ccs_pages(bo) && !IS_DGFX(xe)) ?
true : false;
+ bool clear_only_system_ccs = false;
struct dma_fence *fence = NULL;
u64 size = bo->size;
struct xe_res_cursor src_it;
struct ttm_resource *src = dst;
int err;
+ if (WARN_ON(!clear_bo_data && !clear_ccs))
+ return NULL;
+
+ if (!clear_bo_data && clear_ccs && !IS_DGFX(xe))
+ clear_only_system_ccs = true;
+
if (!clear_vram)
xe_res_first_sg(xe_bo_sg(bo), 0, bo->size, &src_it);
else
@@ -1084,7 +1095,7 @@ struct dma_fence *xe_migrate_clear(struct xe_migrate *m,
batch_size = 2 +
pte_update_size(m, pte_flags, src, &src_it,
&clear_L0, &clear_L0_ofs, &clear_L0_pt,
- clear_system_ccs ? 0 :
emit_clear_cmd_len(gt), 0,
+ clear_bo_data ? emit_clear_cmd_len(gt)
: 0, 0,
avail_pts);
if (xe_migrate_needs_ccs_emit(xe))
@@ -1106,13 +1117,13 @@ struct dma_fence *xe_migrate_clear(struct xe_migrate *m,
if (clear_vram && xe_migrate_allow_identity(clear_L0, &src_it))
xe_res_next(&src_it, clear_L0);
else
- emit_pte(m, bb, clear_L0_pt, clear_vram,
clear_system_ccs,
+ emit_pte(m, bb, clear_L0_pt, clear_vram,
clear_only_system_ccs,
&src_it, clear_L0, dst);
bb->cs[bb->len++] = MI_BATCH_BUFFER_END;
update_idx = bb->len;
- if (!clear_system_ccs)
+ if (clear_bo_data)
emit_clear(gt, bb, clear_L0_ofs, clear_L0,
XE_PAGE_SIZE, clear_vram);
if (xe_migrate_needs_ccs_emit(xe)) {
@@ -1171,7 +1182,7 @@ struct dma_fence *xe_migrate_clear(struct xe_migrate *m,
return ERR_PTR(err);
}
- if (clear_system_ccs)
+ if (clear_ccs)
bo->ccs_cleared = true;
return fence;
diff --git a/drivers/gpu/drm/xe/xe_migrate.h b/drivers/gpu/drm/xe/xe_migrate.h
index 453e0ecf5034..7929cc2425e8 100644
--- a/drivers/gpu/drm/xe/xe_migrate.h
+++ b/drivers/gpu/drm/xe/xe_migrate.h
@@ -102,9 +102,14 @@ struct dma_fence *xe_migrate_copy(struct xe_migrate *m,
struct ttm_resource *dst,
bool copy_only_ccs);
+#define XE_MIGRATE_CLEAR_FLAG_BO_DATA BIT(0)
+#define XE_MIGRATE_CLEAR_FLAG_CCS_DATA BIT(1)
+#define XE_MIGRATE_CLEAR_FLAG_FULL (XE_MIGRATE_CLEAR_FLAG_BO_DATA | \
+ XE_MIGRATE_CLEAR_FLAG_CCS_DATA)
struct dma_fence *xe_migrate_clear(struct xe_migrate *m,
struct xe_bo *bo,
- struct ttm_resource *dst);
+ struct ttm_resource *dst,
+ u32 clear_flags);
struct xe_vm *xe_migrate_get_vm(struct xe_migrate *m);
--
2.42.0
