1// SPDX-License-Identifier: MIT
  2/*
  3 * Copyright © 2022 Intel Corporation
  4 */
  5
  6#include "xe_guc_hwconfig.h"
  7
  8#include <drm/drm_managed.h>
  9
 10#include "abi/guc_actions_abi.h"
 11#include "xe_bo.h"
 12#include "xe_device.h"
 13#include "xe_gt.h"
 14#include "xe_guc.h"
 15#include "xe_map.h"
 16
 17static int send_get_hwconfig(struct xe_guc *guc, u32 ggtt_addr, u32 size)
 18{
 19	u32 action[] = {
 20		XE_GUC_ACTION_GET_HWCONFIG,
 21		lower_32_bits(ggtt_addr),
 22		upper_32_bits(ggtt_addr),
 23		size,
 24	};
 25
 26	return xe_guc_mmio_send(guc, action, ARRAY_SIZE(action));
 27}
 28
 29static int guc_hwconfig_size(struct xe_guc *guc, u32 *size)
 30{
 31	int ret = send_get_hwconfig(guc, 0, 0);
 32
 33	if (ret < 0)
 34		return ret;
 35
 36	*size = ret;
 37	return 0;
 38}
 39
 40static int guc_hwconfig_copy(struct xe_guc *guc)
 41{
 42	int ret = send_get_hwconfig(guc, xe_bo_ggtt_addr(guc->hwconfig.bo),
 43				    guc->hwconfig.size);
 44
 45	if (ret < 0)
 46		return ret;
 47
 48	return 0;
 49}
 50
 51int xe_guc_hwconfig_init(struct xe_guc *guc)
 52{
 53	struct xe_device *xe = guc_to_xe(guc);
 54	struct xe_gt *gt = guc_to_gt(guc);
 55	struct xe_tile *tile = gt_to_tile(gt);
 56	struct xe_bo *bo;
 57	u32 size;
 58	int err;
 59
 60	/* Initialization already done */
 61	if (guc->hwconfig.bo)
 62		return 0;
 63
 64	/*
 65	 * All hwconfig the same across GTs so only GT0 needs to be configured
 66	 */
 67	if (gt->info.id != XE_GT0)
 68		return 0;
 69
 70	/* ADL_P, DG2+ supports hwconfig table */
 71	if (GRAPHICS_VERx100(xe) < 1255 && xe->info.platform != XE_ALDERLAKE_P)
 72		return 0;
 73
 74	err = guc_hwconfig_size(guc, &size);
 75	if (err)
 76		return err;
 77	if (!size)
 78		return -EINVAL;
 79
 80	bo = xe_managed_bo_create_pin_map(xe, tile, PAGE_ALIGN(size),
 81					  XE_BO_CREATE_SYSTEM_BIT |
 82					  XE_BO_CREATE_GGTT_BIT);
 83	if (IS_ERR(bo))
 84		return PTR_ERR(bo);
 85	guc->hwconfig.bo = bo;
 86	guc->hwconfig.size = size;
 87
 88	return guc_hwconfig_copy(guc);
 89}
 90
 91u32 xe_guc_hwconfig_size(struct xe_guc *guc)
 92{
 93	return !guc->hwconfig.bo ? 0 : guc->hwconfig.size;
 94}
 95
 96void xe_guc_hwconfig_copy(struct xe_guc *guc, void *dst)
 97{
 98	struct xe_device *xe = guc_to_xe(guc);
 99
100	XE_WARN_ON(!guc->hwconfig.bo);
101
102	xe_map_memcpy_from(xe, dst, &guc->hwconfig.bo->vmap, 0,
103			   guc->hwconfig.size);
104}