Linux Audio

Check our new training course

Embedded Linux Audio

Check our new training course
with Creative Commons CC-BY-SA
lecture materials

Bootlin logo

Elixir Cross Referencer

Open Menu / drivers / gpu / drm / i915 / gt / uc / intel_huc.h
Loading...
 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
/* SPDX-License-Identifier: MIT */
/*
 * Copyright © 2014-2019 Intel Corporation
 */

#ifndef _INTEL_HUC_H_
#define _INTEL_HUC_H_

#include "i915_reg_defs.h"
#include "i915_sw_fence.h"
#include "intel_uc_fw.h"
#include "intel_huc_fw.h"

#include <linux/notifier.h>
#include <linux/hrtimer.h>

struct bus_type;

enum intel_huc_delayed_load_status {
	INTEL_HUC_WAITING_ON_GSC = 0,
	INTEL_HUC_WAITING_ON_PXP,
	INTEL_HUC_DELAYED_LOAD_ERROR,
};

struct intel_huc {
	/* Generic uC firmware management */
	struct intel_uc_fw fw;

	/* HuC-specific additions */
	struct {
		i915_reg_t reg;
		u32 mask;
		u32 value;
	} status;

	struct {
		struct i915_sw_fence fence;
		struct hrtimer timer;
		struct notifier_block nb;
		enum intel_huc_delayed_load_status status;
	} delayed_load;
};

void intel_huc_init_early(struct intel_huc *huc);
int intel_huc_init(struct intel_huc *huc);
void intel_huc_fini(struct intel_huc *huc);
void intel_huc_suspend(struct intel_huc *huc);
int intel_huc_auth(struct intel_huc *huc);
int intel_huc_wait_for_auth_complete(struct intel_huc *huc);
int intel_huc_check_status(struct intel_huc *huc);
void intel_huc_update_auth_status(struct intel_huc *huc);
bool intel_huc_is_authenticated(struct intel_huc *huc);

void intel_huc_register_gsc_notifier(struct intel_huc *huc, struct bus_type *bus);
void intel_huc_unregister_gsc_notifier(struct intel_huc *huc, struct bus_type *bus);

static inline int intel_huc_sanitize(struct intel_huc *huc)
{
	intel_uc_fw_sanitize(&huc->fw);
	return 0;
}

static inline bool intel_huc_is_supported(struct intel_huc *huc)
{
	return intel_uc_fw_is_supported(&huc->fw);
}

static inline bool intel_huc_is_wanted(struct intel_huc *huc)
{
	return intel_uc_fw_is_enabled(&huc->fw);
}

static inline bool intel_huc_is_used(struct intel_huc *huc)
{
	GEM_BUG_ON(__intel_uc_fw_status(&huc->fw) == INTEL_UC_FIRMWARE_SELECTED);
	return intel_uc_fw_is_available(&huc->fw);
}

static inline bool intel_huc_is_loaded_by_gsc(const struct intel_huc *huc)
{
	return huc->fw.loaded_via_gsc;
}

static inline bool intel_huc_wait_required(struct intel_huc *huc)
{
	return intel_huc_is_used(huc) && intel_huc_is_loaded_by_gsc(huc) &&
	       !intel_huc_is_authenticated(huc);
}

void intel_huc_load_status(struct intel_huc *huc, struct drm_printer *p);

#endif