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drm/xe/migrate: Parameterize ccs and bo data clear in xe_migrate_clear()

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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.ghimiray@intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Akshata Jahagirdar <akshata.jahagirdar@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240809220347.25330-1-nirmoy.das@intel.com
Signed-off-by: Nirmoy Das <nirmoy.das@intel.com>
This commit is contained in:
Nirmoy Das 2024-08-10 00:03:47 +02:00
parent 21ff3a16e9
commit b8cdc47adf
5 changed files with 45 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/gpu/drm/xe/tests/xe_bo.c
View File

@ -36,7 +36,8 @@ 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);

12
drivers/gpu/drm/xe/tests/xe_migrate.c
View File

@ -105,7 +105,8 @@ 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);
@ -279,7 +280,8 @@ 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;
@ -300,7 +302,8 @@ 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;
@ -603,7 +606,8 @@ 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);

12
drivers/gpu/drm/xe/xe_bo.c
View File

@ -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);

27
drivers/gpu/drm/xe/xe_migrate.c
View File

@ -1037,9 +1037,11 @@ 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
@ -1048,18 +1050,27 @@ 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
@ -1085,7 +1096,7 @@ 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))
@ -1107,13 +1118,13 @@ 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)) {
@ -1172,7 +1183,7 @@ err_sync:
return ERR_PTR(err);
}
if (clear_system_ccs)
if (clear_ccs)
bo->ccs_cleared = true;
return fence;

7
drivers/gpu/drm/xe/xe_migrate.h
View File

@ -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);