1 files changed, 52 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_gt_sriov_pf.c b/drivers/gpu/drm/xe/xe_gt_sriov_pf.c
new file mode 100644
index 000000000000..791dcdd767e2
--- /dev/null
+++ b/drivers/gpu/drm/xe/xe_gt_sriov_pf.c
@@ -0,0 +1,52 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2023-2024 Intel Corporation
+ */
+
+#include <drm/drm_managed.h>
+
+#include "xe_gt_sriov_pf.h"
+#include "xe_gt_sriov_pf_helpers.h"
+
+/*
+ * VF's metadata is maintained in the flexible array where:
+ *   - entry [0] contains metadata for the PF (only if applicable),
+ *   - entries [1..n] contain metadata for VF1..VFn::
+ *
+ *       <--------------------------- 1 + total_vfs ----------->
+ *      +-------+-------+-------+-----------------------+-------+
+ *      |   0   |   1   |   2   |                       |   n   |
+ *      +-------+-------+-------+-----------------------+-------+
+ *      |  PF   |  VF1  |  VF2  |      ...     ...      |  VFn  |
+ *      +-------+-------+-------+-----------------------+-------+
+ */
+static int pf_alloc_metadata(struct xe_gt *gt)
+{
+	unsigned int num_vfs = xe_gt_sriov_pf_get_totalvfs(gt);
+
+	gt->sriov.pf.vfs = drmm_kcalloc(&gt_to_xe(gt)->drm, 1 + num_vfs,
+					sizeof(*gt->sriov.pf.vfs), GFP_KERNEL);
+	if (!gt->sriov.pf.vfs)
+		return -ENOMEM;
+
+	return 0;
+}
+
+/**
+ * xe_gt_sriov_pf_init_early - Prepare SR-IOV PF data structures on PF.
+ * @gt: the &xe_gt to initialize
+ *
+ * Early initialization of the PF data.
+ *
+ * Return: 0 on success or a negative error code on failure.
+ */
+int xe_gt_sriov_pf_init_early(struct xe_gt *gt)
+{
+	int err;
+
+	err = pf_alloc_metadata(gt);
+	if (err)
+		return err;
+
+	return 0;
+}