1 files changed, 104 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_guc_hwconfig.c b/drivers/gpu/drm/xe/xe_guc_hwconfig.c
new file mode 100644
index 000000000000..2a13a00917f8
--- /dev/null
+++ b/drivers/gpu/drm/xe/xe_guc_hwconfig.c
@@ -0,0 +1,104 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#include "xe_guc_hwconfig.h"
+
+#include <drm/drm_managed.h>
+
+#include "abi/guc_actions_abi.h"
+#include "xe_bo.h"
+#include "xe_device.h"
+#include "xe_gt.h"
+#include "xe_guc.h"
+#include "xe_map.h"
+
+static int send_get_hwconfig(struct xe_guc *guc, u32 ggtt_addr, u32 size)
+{
+	u32 action[] = {
+		XE_GUC_ACTION_GET_HWCONFIG,
+		lower_32_bits(ggtt_addr),
+		upper_32_bits(ggtt_addr),
+		size,
+	};
+
+	return xe_guc_mmio_send(guc, action, ARRAY_SIZE(action));
+}
+
+static int guc_hwconfig_size(struct xe_guc *guc, u32 *size)
+{
+	int ret = send_get_hwconfig(guc, 0, 0);
+
+	if (ret < 0)
+		return ret;
+
+	*size = ret;
+	return 0;
+}
+
+static int guc_hwconfig_copy(struct xe_guc *guc)
+{
+	int ret = send_get_hwconfig(guc, xe_bo_ggtt_addr(guc->hwconfig.bo),
+				    guc->hwconfig.size);
+
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+int xe_guc_hwconfig_init(struct xe_guc *guc)
+{
+	struct xe_device *xe = guc_to_xe(guc);
+	struct xe_gt *gt = guc_to_gt(guc);
+	struct xe_tile *tile = gt_to_tile(gt);
+	struct xe_bo *bo;
+	u32 size;
+	int err;
+
+	/* Initialization already done */
+	if (guc->hwconfig.bo)
+		return 0;
+
+	/*
+	 * All hwconfig the same across GTs so only GT0 needs to be configured
+	 */
+	if (gt->info.id != XE_GT0)
+		return 0;
+
+	/* ADL_P, DG2+ supports hwconfig table */
+	if (GRAPHICS_VERx100(xe) < 1255 && xe->info.platform != XE_ALDERLAKE_P)
+		return 0;
+
+	err = guc_hwconfig_size(guc, &size);
+	if (err)
+		return err;
+	if (!size)
+		return -EINVAL;
+
+	bo = xe_managed_bo_create_pin_map(xe, tile, PAGE_ALIGN(size),
+					  XE_BO_CREATE_VRAM_IF_DGFX(tile) |
+					  XE_BO_CREATE_GGTT_BIT);
+	if (IS_ERR(bo))
+		return PTR_ERR(bo);
+	guc->hwconfig.bo = bo;
+	guc->hwconfig.size = size;
+
+	return guc_hwconfig_copy(guc);
+}
+
+u32 xe_guc_hwconfig_size(struct xe_guc *guc)
+{
+	return !guc->hwconfig.bo ? 0 : guc->hwconfig.size;
+}
+
+void xe_guc_hwconfig_copy(struct xe_guc *guc, void *dst)
+{
+	struct xe_device *xe = guc_to_xe(guc);
+
+	XE_WARN_ON(!guc->hwconfig.bo);
+
+	xe_map_memcpy_from(xe, dst, &guc->hwconfig.bo->vmap, 0,
+			   guc->hwconfig.size);
+}