2 * Copyright © 2014-2017 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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25 #ifndef _INTEL_UC_FW_H_
26 #define _INTEL_UC_FW_H_
28 #include <linux/types.h>
31 struct drm_i915_private;
33 /* Home of GuC, HuC and DMC firmwares */
34 #define INTEL_UC_FIRMWARE_URL "https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/i915"
36 enum intel_uc_fw_status {
37 INTEL_UC_FIRMWARE_FAIL = -1,
38 INTEL_UC_FIRMWARE_NONE = 0,
39 INTEL_UC_FIRMWARE_PENDING,
40 INTEL_UC_FIRMWARE_SUCCESS
43 enum intel_uc_fw_type {
49 * This structure encapsulates all the data needed during the process
50 * of fetching, caching, and loading the firmware image into the uC.
55 struct drm_i915_gem_object *obj;
56 enum intel_uc_fw_status fetch_status;
57 enum intel_uc_fw_status load_status;
60 * The firmware build process will generate a version header file with major and
61 * minor version defined. The versions are built into CSS header of firmware.
62 * i915 kernel driver set the minimal firmware version required per platform.
69 enum intel_uc_fw_type type;
79 const char *intel_uc_fw_status_repr(enum intel_uc_fw_status status)
82 case INTEL_UC_FIRMWARE_FAIL:
84 case INTEL_UC_FIRMWARE_NONE:
86 case INTEL_UC_FIRMWARE_PENDING:
88 case INTEL_UC_FIRMWARE_SUCCESS:
94 static inline const char *intel_uc_fw_type_repr(enum intel_uc_fw_type type)
97 case INTEL_UC_FW_TYPE_GUC:
99 case INTEL_UC_FW_TYPE_HUC:
106 void intel_uc_fw_init_early(struct intel_uc_fw *uc_fw,
107 enum intel_uc_fw_type type)
110 uc_fw->fetch_status = INTEL_UC_FIRMWARE_NONE;
111 uc_fw->load_status = INTEL_UC_FIRMWARE_NONE;
115 static inline bool intel_uc_fw_is_selected(struct intel_uc_fw *uc_fw)
117 return uc_fw->path != NULL;
120 static inline bool intel_uc_fw_is_loaded(struct intel_uc_fw *uc_fw)
122 return uc_fw->load_status == INTEL_UC_FIRMWARE_SUCCESS;
125 static inline void intel_uc_fw_sanitize(struct intel_uc_fw *uc_fw)
127 if (intel_uc_fw_is_loaded(uc_fw))
128 uc_fw->load_status = INTEL_UC_FIRMWARE_PENDING;
132 * intel_uc_fw_get_upload_size() - Get size of firmware needed to be uploaded.
133 * @uc_fw: uC firmware.
135 * Get the size of the firmware and header that will be uploaded to WOPCM.
137 * Return: Upload firmware size, or zero on firmware fetch failure.
139 static inline u32 intel_uc_fw_get_upload_size(struct intel_uc_fw *uc_fw)
141 if (uc_fw->fetch_status != INTEL_UC_FIRMWARE_SUCCESS)
144 return uc_fw->header_size + uc_fw->ucode_size;
147 void intel_uc_fw_fetch(struct drm_i915_private *dev_priv,
148 struct intel_uc_fw *uc_fw);
149 void intel_uc_fw_cleanup_fetch(struct intel_uc_fw *uc_fw);
150 int intel_uc_fw_upload(struct intel_uc_fw *uc_fw,
151 int (*xfer)(struct intel_uc_fw *uc_fw));
152 int intel_uc_fw_init(struct intel_uc_fw *uc_fw);
153 void intel_uc_fw_fini(struct intel_uc_fw *uc_fw);
154 u32 intel_uc_fw_ggtt_offset(struct intel_uc_fw *uc_fw);
155 void intel_uc_fw_dump(const struct intel_uc_fw *uc_fw, struct drm_printer *p);