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}
105