1 /* SPDX-License-Identifier: MIT */
2 /*
3 * Copyright © 2014-2019 Intel Corporation
4 */
5
6 #ifndef _INTEL_UC_FW_H_
7 #define _INTEL_UC_FW_H_
8
9 #include <linux/types.h>
10 #include "intel_uc_fw_abi.h"
11 #include "intel_device_info.h"
12 #include "i915_gem.h"
13
14 struct drm_printer;
15 struct drm_i915_private;
16 struct intel_gt;
17
18 /* Home of GuC, HuC and DMC firmwares */
19 #define INTEL_UC_FIRMWARE_URL "https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/i915"
20
21 /*
22 * +------------+---------------------------------------------------+
23 * | PHASE | FIRMWARE STATUS TRANSITIONS |
24 * +============+===================================================+
25 * | | UNINITIALIZED |
26 * +------------+- / | \ -+
27 * | | DISABLED <--/ | \--> NOT_SUPPORTED |
28 * | init_early | V |
29 * | | SELECTED |
30 * +------------+- / | \ -+
31 * | | MISSING <--/ | \--> ERROR |
32 * | fetch | V |
33 * | | AVAILABLE |
34 * +------------+- | -+
35 * | init | V |
36 * | | /------> LOADABLE <----<-----------\ |
37 * +------------+- \ / \ \ \ -+
38 * | | FAIL <--< \--> TRANSFERRED \ |
39 * | upload | \ / \ / |
40 * | | \---------/ \--> RUNNING |
41 * +------------+---------------------------------------------------+
42 */
43
44 enum intel_uc_fw_status {
45 INTEL_UC_FIRMWARE_NOT_SUPPORTED = -1, /* no uc HW */
46 INTEL_UC_FIRMWARE_UNINITIALIZED = 0, /* used to catch checks done too early */
47 INTEL_UC_FIRMWARE_DISABLED, /* disabled */
48 INTEL_UC_FIRMWARE_SELECTED, /* selected the blob we want to load */
49 INTEL_UC_FIRMWARE_MISSING, /* blob not found on the system */
50 INTEL_UC_FIRMWARE_ERROR, /* invalid format or version */
51 INTEL_UC_FIRMWARE_AVAILABLE, /* blob found and copied in mem */
52 INTEL_UC_FIRMWARE_LOADABLE, /* all fw-required objects are ready */
53 INTEL_UC_FIRMWARE_FAIL, /* failed to xfer or init/auth the fw */
54 INTEL_UC_FIRMWARE_TRANSFERRED, /* dma xfer done */
55 INTEL_UC_FIRMWARE_RUNNING /* init/auth done */
56 };
57
58 enum intel_uc_fw_type {
59 INTEL_UC_FW_TYPE_GUC = 0,
60 INTEL_UC_FW_TYPE_HUC
61 };
62 #define INTEL_UC_FW_NUM_TYPES 2
63
64 /*
65 * This structure encapsulates all the data needed during the process
66 * of fetching, caching, and loading the firmware image into the uC.
67 */
68 struct intel_uc_fw {
69 enum intel_uc_fw_type type;
70 union {
71 const enum intel_uc_fw_status status;
72 enum intel_uc_fw_status __status; /* no accidental overwrites */
73 };
74 const char *path;
75 bool user_overridden;
76 size_t size;
77 struct drm_i915_gem_object *obj;
78
79 /*
80 * The firmware build process will generate a version header file with major and
81 * minor version defined. The versions are built into CSS header of firmware.
82 * i915 kernel driver set the minimal firmware version required per platform.
83 */
84 u16 major_ver_wanted;
85 u16 minor_ver_wanted;
86 u16 major_ver_found;
87 u16 minor_ver_found;
88
89 u32 rsa_size;
90 u32 ucode_size;
91
92 u32 private_data_size;
93 };
94
95 #ifdef CONFIG_DRM_I915_DEBUG_GUC
96 void intel_uc_fw_change_status(struct intel_uc_fw *uc_fw,
97 enum intel_uc_fw_status status);
98 #else
intel_uc_fw_change_status(struct intel_uc_fw * uc_fw,enum intel_uc_fw_status status)99 static inline void intel_uc_fw_change_status(struct intel_uc_fw *uc_fw,
100 enum intel_uc_fw_status status)
101 {
102 uc_fw->__status = status;
103 }
104 #endif
105
106 static inline
intel_uc_fw_status_repr(enum intel_uc_fw_status status)107 const char *intel_uc_fw_status_repr(enum intel_uc_fw_status status)
108 {
109 switch (status) {
110 case INTEL_UC_FIRMWARE_NOT_SUPPORTED:
111 return "N/A";
112 case INTEL_UC_FIRMWARE_UNINITIALIZED:
113 return "UNINITIALIZED";
114 case INTEL_UC_FIRMWARE_DISABLED:
115 return "DISABLED";
116 case INTEL_UC_FIRMWARE_SELECTED:
117 return "SELECTED";
118 case INTEL_UC_FIRMWARE_MISSING:
119 return "MISSING";
120 case INTEL_UC_FIRMWARE_ERROR:
121 return "ERROR";
122 case INTEL_UC_FIRMWARE_AVAILABLE:
123 return "AVAILABLE";
124 case INTEL_UC_FIRMWARE_LOADABLE:
125 return "LOADABLE";
126 case INTEL_UC_FIRMWARE_FAIL:
127 return "FAIL";
128 case INTEL_UC_FIRMWARE_TRANSFERRED:
129 return "TRANSFERRED";
130 case INTEL_UC_FIRMWARE_RUNNING:
131 return "RUNNING";
132 }
133 return "<invalid>";
134 }
135
intel_uc_fw_status_to_error(enum intel_uc_fw_status status)136 static inline int intel_uc_fw_status_to_error(enum intel_uc_fw_status status)
137 {
138 switch (status) {
139 case INTEL_UC_FIRMWARE_NOT_SUPPORTED:
140 return -ENODEV;
141 case INTEL_UC_FIRMWARE_UNINITIALIZED:
142 return -EACCES;
143 case INTEL_UC_FIRMWARE_DISABLED:
144 return -EPERM;
145 case INTEL_UC_FIRMWARE_MISSING:
146 return -ENOENT;
147 case INTEL_UC_FIRMWARE_ERROR:
148 return -ENOEXEC;
149 case INTEL_UC_FIRMWARE_FAIL:
150 return -EIO;
151 case INTEL_UC_FIRMWARE_SELECTED:
152 return -ESTALE;
153 case INTEL_UC_FIRMWARE_AVAILABLE:
154 case INTEL_UC_FIRMWARE_LOADABLE:
155 case INTEL_UC_FIRMWARE_TRANSFERRED:
156 case INTEL_UC_FIRMWARE_RUNNING:
157 return 0;
158 }
159 return -EINVAL;
160 }
161
intel_uc_fw_type_repr(enum intel_uc_fw_type type)162 static inline const char *intel_uc_fw_type_repr(enum intel_uc_fw_type type)
163 {
164 switch (type) {
165 case INTEL_UC_FW_TYPE_GUC:
166 return "GuC";
167 case INTEL_UC_FW_TYPE_HUC:
168 return "HuC";
169 }
170 return "uC";
171 }
172
173 static inline enum intel_uc_fw_status
__intel_uc_fw_status(struct intel_uc_fw * uc_fw)174 __intel_uc_fw_status(struct intel_uc_fw *uc_fw)
175 {
176 /* shouldn't call this before checking hw/blob availability */
177 GEM_BUG_ON(uc_fw->status == INTEL_UC_FIRMWARE_UNINITIALIZED);
178 return uc_fw->status;
179 }
180
intel_uc_fw_is_supported(struct intel_uc_fw * uc_fw)181 static inline bool intel_uc_fw_is_supported(struct intel_uc_fw *uc_fw)
182 {
183 return __intel_uc_fw_status(uc_fw) != INTEL_UC_FIRMWARE_NOT_SUPPORTED;
184 }
185
intel_uc_fw_is_enabled(struct intel_uc_fw * uc_fw)186 static inline bool intel_uc_fw_is_enabled(struct intel_uc_fw *uc_fw)
187 {
188 return __intel_uc_fw_status(uc_fw) > INTEL_UC_FIRMWARE_DISABLED;
189 }
190
intel_uc_fw_is_available(struct intel_uc_fw * uc_fw)191 static inline bool intel_uc_fw_is_available(struct intel_uc_fw *uc_fw)
192 {
193 return __intel_uc_fw_status(uc_fw) >= INTEL_UC_FIRMWARE_AVAILABLE;
194 }
195
intel_uc_fw_is_loadable(struct intel_uc_fw * uc_fw)196 static inline bool intel_uc_fw_is_loadable(struct intel_uc_fw *uc_fw)
197 {
198 return __intel_uc_fw_status(uc_fw) >= INTEL_UC_FIRMWARE_LOADABLE;
199 }
200
intel_uc_fw_is_loaded(struct intel_uc_fw * uc_fw)201 static inline bool intel_uc_fw_is_loaded(struct intel_uc_fw *uc_fw)
202 {
203 return __intel_uc_fw_status(uc_fw) >= INTEL_UC_FIRMWARE_TRANSFERRED;
204 }
205
intel_uc_fw_is_running(struct intel_uc_fw * uc_fw)206 static inline bool intel_uc_fw_is_running(struct intel_uc_fw *uc_fw)
207 {
208 return __intel_uc_fw_status(uc_fw) == INTEL_UC_FIRMWARE_RUNNING;
209 }
210
intel_uc_fw_is_overridden(const struct intel_uc_fw * uc_fw)211 static inline bool intel_uc_fw_is_overridden(const struct intel_uc_fw *uc_fw)
212 {
213 return uc_fw->user_overridden;
214 }
215
intel_uc_fw_sanitize(struct intel_uc_fw * uc_fw)216 static inline void intel_uc_fw_sanitize(struct intel_uc_fw *uc_fw)
217 {
218 if (intel_uc_fw_is_loaded(uc_fw))
219 intel_uc_fw_change_status(uc_fw, INTEL_UC_FIRMWARE_LOADABLE);
220 }
221
__intel_uc_fw_get_upload_size(struct intel_uc_fw * uc_fw)222 static inline u32 __intel_uc_fw_get_upload_size(struct intel_uc_fw *uc_fw)
223 {
224 return sizeof(struct uc_css_header) + uc_fw->ucode_size;
225 }
226
227 /**
228 * intel_uc_fw_get_upload_size() - Get size of firmware needed to be uploaded.
229 * @uc_fw: uC firmware.
230 *
231 * Get the size of the firmware and header that will be uploaded to WOPCM.
232 *
233 * Return: Upload firmware size, or zero on firmware fetch failure.
234 */
intel_uc_fw_get_upload_size(struct intel_uc_fw * uc_fw)235 static inline u32 intel_uc_fw_get_upload_size(struct intel_uc_fw *uc_fw)
236 {
237 if (!intel_uc_fw_is_available(uc_fw))
238 return 0;
239
240 return __intel_uc_fw_get_upload_size(uc_fw);
241 }
242
243 void intel_uc_fw_init_early(struct intel_uc_fw *uc_fw,
244 enum intel_uc_fw_type type);
245 int intel_uc_fw_fetch(struct intel_uc_fw *uc_fw);
246 void intel_uc_fw_cleanup_fetch(struct intel_uc_fw *uc_fw);
247 int intel_uc_fw_upload(struct intel_uc_fw *uc_fw, u32 offset, u32 dma_flags);
248 int intel_uc_fw_init(struct intel_uc_fw *uc_fw);
249 void intel_uc_fw_fini(struct intel_uc_fw *uc_fw);
250 size_t intel_uc_fw_copy_rsa(struct intel_uc_fw *uc_fw, void *dst, u32 max_len);
251 void intel_uc_fw_dump(const struct intel_uc_fw *uc_fw, struct drm_printer *p);
252
253 #endif
254
