[PATCH] drm/xe/pf: Don't allow LMEM provisioning if LMTT isn't available on the device

[Piórkowski, Piotr]

From: Piotr Piórkowski <piotr.piorkowski at intel.com>

Currently, LMEM provisioning is fully dependent on LMTT, and we are
unable to make useful LMEM provisioning without LMTT.
Let's don't allow LMEM provisioning if LMTT is not available on the
device.

Signed-off-by: Piotr Piórkowski <piotr.piorkowski at intel.com>
---
 drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c  | 8 +++++---
 drivers/gpu/drm/xe/xe_gt_sriov_pf_debugfs.c | 2 +-
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c b/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c
index 10be109bf357..265e58c55c6d 100644
--- a/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c
+++ b/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c
@@ -1513,7 +1513,9 @@ int xe_gt_sriov_pf_config_set_lmem(struct xe_gt *gt, unsigned int vfid, u64 size
 	int err;
 
 	mutex_lock(xe_gt_sriov_pf_master_mutex(gt));
-	if (vfid)
+	if (!xe_device_has_lmtt(gt_to_xe(gt)))
+		err = -EROFS;
+	else if (vfid)
 		err = pf_provision_vf_lmem(gt, vfid, size);
 	else
 		err = pf_set_spare_lmem(gt, size);
@@ -1621,7 +1623,7 @@ int xe_gt_sriov_pf_config_set_fair_lmem(struct xe_gt *gt, unsigned int vfid,
 	xe_gt_assert(gt, num_vfs);
 	xe_gt_assert(gt, !xe_gt_is_media_type(gt));
 
-	if (!IS_DGFX(gt_to_xe(gt)))
+	if (!xe_device_has_lmtt(gt_to_xe(gt)))
 		return 0;
 
 	mutex_lock(xe_gt_sriov_pf_master_mutex(gt));
@@ -2155,7 +2157,7 @@ static int pf_validate_vf_config(struct xe_gt *gt, unsigned int vfid)
 	valid_all = valid_all && valid_ggtt;
 	valid_any = valid_any || (valid_ggtt && is_primary);
 
-	if (IS_DGFX(xe)) {
+	if (xe_device_has_lmtt(xe)) {
 		bool valid_lmem = pf_get_vf_config_lmem(primary_gt, vfid);
 
 		valid_any = valid_any || (valid_lmem && is_primary);
diff --git a/drivers/gpu/drm/xe/xe_gt_sriov_pf_debugfs.c b/drivers/gpu/drm/xe/xe_gt_sriov_pf_debugfs.c
index b2521dd6ec42..5f41381df860 100644
--- a/drivers/gpu/drm/xe/xe_gt_sriov_pf_debugfs.c
+++ b/drivers/gpu/drm/xe/xe_gt_sriov_pf_debugfs.c
@@ -286,7 +286,7 @@ static void pf_add_config_attrs(struct xe_gt *gt, struct dentry *parent, unsigne
 	if (!xe_gt_is_media_type(gt)) {
 		debugfs_create_file_unsafe(vfid ? "ggtt_quota" : "ggtt_spare",
 					   0644, parent, parent, &ggtt_fops);
-		if (IS_DGFX(gt_to_xe(gt)))
+		if (xe_device_has_lmtt(gt_to_xe(gt)))
 			debugfs_create_file_unsafe(vfid ? "lmem_quota" : "lmem_spare",
 						   0644, parent, parent, &lmem_fops);
 	}
-- 
2.34.1