On 25/04/2022 17:24, Ramalingam C wrote:
Calculate the ccs_sz that needs to be emitted based on the src
and dst pages emitted per chunk. And handle the return value of emit_pte
for the ccs pages.
Signed-off-by: Ramalingam C <ramalingam.c@xxxxxxxxx>
---
drivers/gpu/drm/i915/gt/intel_migrate.c | 36 +++++++++----------------
1 file changed, 12 insertions(+), 24 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_migrate.c b/drivers/gpu/drm/i915/gt/intel_migrate.c
index 29d761da02c4..463a6a14b5f9 100644
--- a/drivers/gpu/drm/i915/gt/intel_migrate.c
+++ b/drivers/gpu/drm/i915/gt/intel_migrate.c
@@ -647,17 +647,9 @@ static int scatter_list_length(struct scatterlist *sg)
static void
calculate_chunk_sz(struct drm_i915_private *i915, bool src_is_lmem,
- int *src_sz, int *ccs_sz, u32 bytes_to_cpy,
- u32 ccs_bytes_to_cpy)
+ int *src_sz, u32 bytes_to_cpy, u32 ccs_bytes_to_cpy)
{
if (ccs_bytes_to_cpy) {
- /*
- * We can only copy the ccs data corresponding to
- * the CHUNK_SZ of lmem which is
- * GET_CCS_BYTES(i915, CHUNK_SZ))
- */
- *ccs_sz = min_t(int, ccs_bytes_to_cpy, GET_CCS_BYTES(i915, CHUNK_SZ));
-
if (!src_is_lmem)
/*
* When CHUNK_SZ is passed all the pages upto CHUNK_SZ
@@ -713,10 +705,10 @@ intel_context_migrate_copy(struct intel_context *ce,
struct drm_i915_private *i915 = ce->engine->i915;
u32 ccs_bytes_to_cpy = 0, bytes_to_cpy;
enum i915_cache_level ccs_cache_level;
- int src_sz, dst_sz, ccs_sz;
u32 src_offset, dst_offset;
u8 src_access, dst_access;
struct i915_request *rq;
+ int src_sz, dst_sz;
bool ccs_is_src;
int err;
@@ -770,7 +762,7 @@ intel_context_migrate_copy(struct intel_context *ce,
}
do {
- int len;
+ int len, ccs_sz;
This could be moved into the reduced scope below.
Reviewed-by: Matthew Auld <matthew.auld@xxxxxxxxx>
rq = i915_request_create(ce);
if (IS_ERR(rq)) {
@@ -797,7 +789,7 @@ intel_context_migrate_copy(struct intel_context *ce,
if (err)
goto out_rq;
- calculate_chunk_sz(i915, src_is_lmem, &src_sz, &ccs_sz,
+ calculate_chunk_sz(i915, src_is_lmem, &src_sz,
bytes_to_cpy, ccs_bytes_to_cpy);
len = emit_pte(rq, &it_src, src_cache_level, src_is_lmem,
@@ -835,33 +827,29 @@ intel_context_migrate_copy(struct intel_context *ce,
if (err)
goto out_rq;
+ ccs_sz = GET_CCS_BYTES(i915, len);
err = emit_pte(rq, &it_ccs, ccs_cache_level, false,
ccs_is_src ? src_offset : dst_offset,
ccs_sz);
+ if (err < 0)
+ goto out_rq;
+ if (err < ccs_sz) {
+ err = -EINVAL;
+ goto out_rq;
+ }
err = rq->engine->emit_flush(rq, EMIT_INVALIDATE);
if (err)
goto out_rq;
- /*
- * Using max of src_sz and dst_sz, as we need to
- * pass the lmem size corresponding to the ccs
- * blocks we need to handle.
- */
- ccs_sz = max_t(int, ccs_is_src ? ccs_sz : src_sz,
- ccs_is_src ? dst_sz : ccs_sz);
-
err = emit_copy_ccs(rq, dst_offset, dst_access,
- src_offset, src_access, ccs_sz);
+ src_offset, src_access, len);
if (err)
goto out_rq;
err = rq->engine->emit_flush(rq, EMIT_INVALIDATE);
if (err)
goto out_rq;
-
- /* Converting back to ccs bytes */
- ccs_sz = GET_CCS_BYTES(rq->engine->i915, ccs_sz);
ccs_bytes_to_cpy -= ccs_sz;
}
