[PATCH v4 7/7] drm/xe/migrate: Parameterize ccs and bo data clear in xe_migrate_clear()
Akshata Jahagirdar
akshata.jahagirdar at intel.com
Tue Jul 16 01:01:11 UTC 2024
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.
Signed-off-by: Nirmoy Das <nirmoy.das at intel.com>
Signed-off-by: Akshata Jahagirdar <akshata.jahagirdar at intel.com>
---
drivers/gpu/drm/xe/tests/xe_bo.c | 3 ++-
drivers/gpu/drm/xe/tests/xe_migrate.c | 8 ++++----
drivers/gpu/drm/xe/xe_bo.c | 10 ++++++++--
drivers/gpu/drm/xe/xe_migrate.c | 23 +++++++++++++++--------
drivers/gpu/drm/xe/xe_migrate.h | 4 +++-
5 files changed, 32 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..750759be4d4d 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,
+ true, true);
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 93fff3f515eb..1dd144e96bd6 100644
--- a/drivers/gpu/drm/xe/tests/xe_migrate.c
+++ b/drivers/gpu/drm/xe/tests/xe_migrate.c
@@ -104,7 +104,7 @@ 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, true, true);
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 +278,7 @@ 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, true, true);
if (sanity_fence_failed(xe, fence, "Clearing small bo", test))
goto out;
@@ -299,7 +299,7 @@ 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, true, true);
if (sanity_fence_failed(xe, fence, "Clearing big bo", test))
goto out;
@@ -595,7 +595,7 @@ 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, true, true);
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..2a298f5e3e6e 100644
--- a/drivers/gpu/drm/xe/xe_bo.c
+++ b/drivers/gpu/drm/xe/xe_bo.c
@@ -793,8 +793,14 @@ 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) {
+ bool clear_ccs = mem_type_is_vram(new_mem->mem_type) ||
+ handle_system_ccs;
+ bool clear_bo_data = mem_type_is_vram(new_mem->mem_type);
+
+ fence = xe_migrate_clear(migrate, bo, new_mem,
+ clear_bo_data, clear_ccs);
+ }
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 2cb10437f289..b30ed7a3abfc 100644
--- a/drivers/gpu/drm/xe/xe_migrate.c
+++ b/drivers/gpu/drm/xe/xe_migrate.c
@@ -1017,9 +1017,12 @@ 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_bo_data: clear bo data
+ * @clear_ccs: clear ccs metadata
*
- * 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 @clear_bo_data is set.
+ * On flat CCS devices, the CCS metadata is cleared to zero with @clear_ccs.
+ * Set both, @clear_bo_data and @clear_ccs 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
@@ -1028,18 +1031,22 @@ 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,
+ bool clear_bo_data,
+ bool clear_ccs)
{
bool clear_vram = mem_type_is_vram(dst->mem_type);
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;
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_vram)
xe_res_first_sg(xe_bo_sg(bo), 0, bo->size, &src_it);
else
@@ -1063,7 +1070,7 @@ struct dma_fence *xe_migrate_clear(struct xe_migrate *m,
batch_size = 2 +
pte_update_size(m, clear_vram, false, 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))
@@ -1084,13 +1091,13 @@ 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_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)) {
@@ -1149,7 +1156,7 @@ 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..45f6c180148f 100644
--- a/drivers/gpu/drm/xe/xe_migrate.h
+++ b/drivers/gpu/drm/xe/xe_migrate.h
@@ -104,7 +104,9 @@ struct dma_fence *xe_migrate_copy(struct xe_migrate *m,
struct dma_fence *xe_migrate_clear(struct xe_migrate *m,
struct xe_bo *bo,
- struct ttm_resource *dst);
+ struct ttm_resource *dst,
+ bool clear_bo_data,
+ bool clear_ccs);
struct xe_vm *xe_migrate_get_vm(struct xe_migrate *m);
--
2.34.1
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