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1/* SPDX-License-Identifier: MIT */
2/*
3 * Copyright © 2019 Intel Corporation
4 */
5
6#ifndef __INTEL_DMC_H__
7#define __INTEL_DMC_H__
8
9#include "i915_reg.h"
10#include "intel_wakeref.h"
11#include <linux/workqueue.h>
12
13struct drm_i915_private;
14
15#define DMC_VERSION(major, minor) ((major) << 16 | (minor))
16#define DMC_VERSION_MAJOR(version) ((version) >> 16)
17#define DMC_VERSION_MINOR(version) ((version) & 0xffff)
18
19enum {
20 DMC_FW_MAIN = 0,
21 DMC_FW_PIPEA,
22 DMC_FW_PIPEB,
23 DMC_FW_MAX
24};
25
26struct intel_dmc {
27 struct work_struct work;
28 const char *fw_path;
29 u32 required_version;
30 u32 max_fw_size; /* bytes */
31 u32 version;
32 struct dmc_fw_info {
33 u32 mmio_count;
34 i915_reg_t mmioaddr[20];
35 u32 mmiodata[20];
36 u32 dmc_offset;
37 u32 start_mmioaddr;
38 u32 dmc_fw_size; /*dwords */
39 u32 *payload;
40 bool present;
41 } dmc_info[DMC_FW_MAX];
42
43 u32 dc_state;
44 u32 target_dc_state;
45 u32 allowed_dc_mask;
46 intel_wakeref_t wakeref;
47};
48
49void intel_dmc_ucode_init(struct drm_i915_private *i915);
50void intel_dmc_load_program(struct drm_i915_private *i915);
51void intel_dmc_ucode_fini(struct drm_i915_private *i915);
52void intel_dmc_ucode_suspend(struct drm_i915_private *i915);
53void intel_dmc_ucode_resume(struct drm_i915_private *i915);
54bool intel_dmc_has_payload(struct drm_i915_private *i915);
55
56#endif /* __INTEL_DMC_H__ */