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iris: Align size of compressed scanout buffers to 64KB on BMG (xe2)

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Signed-off-by: Jianxun Zhang <jianxun.zhang@intel.com>
Reviewed-by: Nanley Chery <nanley.g.chery@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34567>
This commit is contained in:
Jianxun Zhang 2025-05-20 11:52:08 -07:00 • committed by Marge Bot
parent 2660b7c49d
commit 785d1c3b86
1 changed files with 13 additions and 4 deletions
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17
src/gallium/drivers/iris/xe/iris_kmd_backend.c
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@ -54,22 +54,31 @@ xe_gem_create(struct iris_bufmgr *bufmgr,
/* TODO: we might need to consider scanout for shared buffers too as we
* do not know what the process this is shared with will do with it
*/
if (alloc_flags & BO_ALLOC_SCANOUT)
const struct intel_device_info *devinfo = iris_bufmgr_get_device_info(bufmgr);
if (alloc_flags & BO_ALLOC_SCANOUT) {
flags |= DRM_XE_GEM_CREATE_FLAG_SCANOUT;
if (!intel_vram_all_mappable(iris_bufmgr_get_device_info(bufmgr)) &&
/* Xe2+ discrete platforms (BMG) requires continuously allocated
* physical memory for CCS compressed images to display. Xe KMD will do
* this when it gets scanout flag and a size of multiplies of 64KB.
* The alignment of the size is not per-plane, so we do it in the
* drivers instead of ISL.
*/
if (devinfo->has_local_mem && (alloc_flags & BO_ALLOC_COMPRESSED))
size = align64(size, 64 * 1024);
}
if (!intel_vram_all_mappable(devinfo) &&
(heap_flags == IRIS_HEAP_DEVICE_LOCAL_PREFERRED ||
heap_flags == IRIS_HEAP_DEVICE_LOCAL_CPU_VISIBLE_SMALL_BAR))
flags |= DRM_XE_GEM_CREATE_FLAG_NEEDS_VISIBLE_VRAM;
struct drm_xe_gem_create gem_create = {
.vm_id = vm_id,
.size = align64(size, iris_bufmgr_get_device_info(bufmgr)->mem_alignment),
.size = align64(size, devinfo->mem_alignment),
.flags = flags,
};
for (uint16_t i = 0; i < regions_count; i++)
gem_create.placement |= BITFIELD_BIT(regions[i]->instance);
const struct intel_device_info *devinfo = iris_bufmgr_get_device_info(bufmgr);
const struct intel_device_info_pat_entry *pat_entry;
pat_entry = iris_heap_to_pat_entry(devinfo, heap_flags, alloc_flags & BO_ALLOC_SCANOUT);
switch (pat_entry->mmap) {