drm/xe/pf: Show VFs LMEM provisioning summary over debugfs

While we can already view individual VF LMEM provisioning using
lmem_quota debugfs attribute, we want to have unified way to show
summary across all VFs, like we do for GGTT or GuC doorbells/IDs.

Signed-off-by: Michal Wajdeczko <[email protected]>
Reviewed-by: Marcin Bernatowicz <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

Author: mwajdecz

drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c

@@ -2376,6 +2376,41 @@ int xe_gt_sriov_pf_config_print_dbs(struct xe_gt *gt, struct drm_printer *p)
 	return 0;
 }
 
+/**
+ * xe_gt_sriov_pf_config_print_lmem - Print LMEM configurations.
+ * @gt: the &xe_gt
+ * @p: the &drm_printer
+ *
+ * Print LMEM allocations across all VFs.
+ * VFs without LMEM allocation are skipped.
+ *
+ * This function can only be called on PF.
+ * Return: 0 on success or a negative error code on failure.
+ */
+int xe_gt_sriov_pf_config_print_lmem(struct xe_gt *gt, struct drm_printer *p)
+{
+	unsigned int n, total_vfs = xe_sriov_pf_get_totalvfs(gt_to_xe(gt));
+	const struct xe_gt_sriov_config *config;
+	char buf[10];
+
+	xe_gt_assert(gt, IS_SRIOV_PF(gt_to_xe(gt)));
+	mutex_lock(xe_gt_sriov_pf_master_mutex(gt));
+
+	for (n = 1; n <= total_vfs; n++) {
+		config = &gt->sriov.pf.vfs[n].config;
+		if (!config->lmem_obj)
+			continue;
+
+		string_get_size(config->lmem_obj->size, 1, STRING_UNITS_2,
+				buf, sizeof(buf));
+		drm_printf(p, "VF%u:\t%zu\t(%s)\n",
+			   n, config->lmem_obj->size, buf);
+	}
+
+	mutex_unlock(xe_gt_sriov_pf_master_mutex(gt));
+	return 0;
+}
+
 /**
  * xe_gt_sriov_pf_config_print_available_ggtt - Print available GGTT ranges.
  * @gt: the &xe_gt

drivers/gpu/drm/xe/xe_gt_sriov_pf_config.h

@@ -65,6 +65,7 @@ void xe_gt_sriov_pf_config_restart(struct xe_gt *gt);
 int xe_gt_sriov_pf_config_print_ggtt(struct xe_gt *gt, struct drm_printer *p);
 int xe_gt_sriov_pf_config_print_ctxs(struct xe_gt *gt, struct drm_printer *p);
 int xe_gt_sriov_pf_config_print_dbs(struct xe_gt *gt, struct drm_printer *p);
+int xe_gt_sriov_pf_config_print_lmem(struct xe_gt *gt, struct drm_printer *p);
 
 int xe_gt_sriov_pf_config_print_available_ggtt(struct xe_gt *gt, struct drm_printer *p);
 

drivers/gpu/drm/xe/xe_gt_sriov_pf_debugfs.c

@@ -81,6 +81,11 @@ static const struct drm_info_list pf_info[] = {
 		.show = xe_gt_debugfs_simple_show,
 		.data = xe_gt_sriov_pf_config_print_dbs,
 	},
+	{
+		"lmem_provisioned",
+		.show = xe_gt_debugfs_simple_show,
+		.data = xe_gt_sriov_pf_config_print_lmem,
+	},
 	{
 		"runtime_registers",
 		.show = xe_gt_debugfs_simple_show,