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drm/xe/pf: Assert LMEM provisioning is done only on DGFX

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The Local Memory (aka VRAM) is only available on DGFX platforms.
We shouldn't attempt to provision VFs with LMEM or attempt to
update the LMTT on non-DGFX platforms. Add missing asserts that
would enforce that and fix release code that could crash on iGFX
due to uninitialized LMTT.

Fixes: c063cce7df ("drm/xe/pf: Update the LMTT when freeing VF GT config")
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Piotr Piórkowski <piotr.piorkowski@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240607153155.1592-1-michal.wajdeczko@intel.com
This commit is contained in:
Michal Wajdeczko 2024-06-07 17:31:55 +02:00
parent 4468d0488e
commit b321cb83a3
1 changed files with 13 additions and 2 deletions
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13
drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c
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@ -1290,6 +1290,9 @@ static void pf_reset_vf_lmtt(struct xe_device *xe, unsigned int vfid)
struct xe_tile *tile;
unsigned int tid;
xe_assert(xe, IS_DGFX(xe));
xe_assert(xe, IS_SRIOV_PF(xe));
for_each_tile(tile, xe, tid) {
lmtt = &tile->sriov.pf.lmtt;
xe_lmtt_drop_pages(lmtt, vfid);
@ -1308,6 +1311,9 @@ static int pf_update_vf_lmtt(struct xe_device *xe, unsigned int vfid)
unsigned int tid;
int err;
xe_assert(xe, IS_DGFX(xe));
xe_assert(xe, IS_SRIOV_PF(xe));
total = 0;
for_each_tile(tile, xe, tid)
total += pf_get_vf_config_lmem(tile->primary_gt, vfid);
@ -1353,6 +1359,7 @@ fail:
static void pf_release_vf_config_lmem(struct xe_gt *gt, struct xe_gt_sriov_config *config)
{
xe_gt_assert(gt, IS_DGFX(gt_to_xe(gt)));
xe_gt_assert(gt, !xe_gt_is_media_type(gt));
lockdep_assert_held(xe_gt_sriov_pf_master_mutex(gt));
@ -1371,6 +1378,7 @@ static int pf_provision_vf_lmem(struct xe_gt *gt, unsigned int vfid, u64 size)
int err;
xe_gt_assert(gt, vfid);
xe_gt_assert(gt, IS_DGFX(xe));
xe_gt_assert(gt, !xe_gt_is_media_type(gt));
size = round_up(size, pf_get_lmem_alignment(gt));
@ -1838,11 +1846,14 @@ u32 xe_gt_sriov_pf_config_get_threshold(struct xe_gt *gt, unsigned int vfid,
static void pf_release_vf_config(struct xe_gt *gt, unsigned int vfid)
{
struct xe_gt_sriov_config *config = pf_pick_vf_config(gt, vfid);
struct xe_device *xe = gt_to_xe(gt);
if (!xe_gt_is_media_type(gt)) {
pf_release_vf_config_ggtt(gt, config);
if (IS_DGFX(xe)) {
pf_release_vf_config_lmem(gt, config);
pf_update_vf_lmtt(gt_to_xe(gt), vfid);
pf_update_vf_lmtt(xe, vfid);
}
}
pf_release_config_ctxs(gt, config);
pf_release_config_dbs(gt, config);