1 /*
2 * Copyright 2016 Advanced Micro Devices, Inc.
3 *
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:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Author: Monk.liu@amd.com
23 */
24 #ifndef AMDGPU_VIRT_H
25 #define AMDGPU_VIRT_H
26
27 #include "amdgv_sriovmsg.h"
28
29 #define AMDGPU_SRIOV_CAPS_SRIOV_VBIOS (1 << 0) /* vBIOS is sr-iov ready */
30 #define AMDGPU_SRIOV_CAPS_ENABLE_IOV (1 << 1) /* sr-iov is enabled on this GPU */
31 #define AMDGPU_SRIOV_CAPS_IS_VF (1 << 2) /* this GPU is a virtual function */
32 #define AMDGPU_PASSTHROUGH_MODE (1 << 3) /* thw whole GPU is pass through for VM */
33 #define AMDGPU_SRIOV_CAPS_RUNTIME (1 << 4) /* is out of full access mode */
34 #define AMDGPU_VF_MMIO_ACCESS_PROTECT (1 << 5) /* MMIO write access is not allowed in sriov runtime */
35
36 /* flags for indirect register access path supported by rlcg for sriov */
37 #define AMDGPU_RLCG_GC_WRITE_LEGACY (0x8 << 28)
38 #define AMDGPU_RLCG_GC_WRITE (0x0 << 28)
39 #define AMDGPU_RLCG_GC_READ (0x1 << 28)
40 #define AMDGPU_RLCG_MMHUB_WRITE (0x2 << 28)
41
42 /* error code for indirect register access path supported by rlcg for sriov */
43 #define AMDGPU_RLCG_VFGATE_DISABLED 0x4000000
44 #define AMDGPU_RLCG_WRONG_OPERATION_TYPE 0x2000000
45 #define AMDGPU_RLCG_REG_NOT_IN_RANGE 0x1000000
46
47 #define AMDGPU_RLCG_SCRATCH1_ADDRESS_MASK 0xFFFFF
48
49 /* all asic after AI use this offset */
50 #define mmRCC_IOV_FUNC_IDENTIFIER 0xDE5
51 /* tonga/fiji use this offset */
52 #define mmBIF_IOV_FUNC_IDENTIFIER 0x1503
53
54 enum amdgpu_sriov_vf_mode {
55 SRIOV_VF_MODE_BARE_METAL = 0,
56 SRIOV_VF_MODE_ONE_VF,
57 SRIOV_VF_MODE_MULTI_VF,
58 };
59
60 struct amdgpu_mm_table {
61 struct amdgpu_bo *bo;
62 uint32_t *cpu_addr;
63 uint64_t gpu_addr;
64 };
65
66 #define AMDGPU_VF_ERROR_ENTRY_SIZE 16
67
68 /* struct error_entry - amdgpu VF error information. */
69 struct amdgpu_vf_error_buffer {
70 struct mutex lock;
71 int read_count;
72 int write_count;
73 uint16_t code[AMDGPU_VF_ERROR_ENTRY_SIZE];
74 uint16_t flags[AMDGPU_VF_ERROR_ENTRY_SIZE];
75 uint64_t data[AMDGPU_VF_ERROR_ENTRY_SIZE];
76 };
77
78 enum idh_request;
79
80 /**
81 * struct amdgpu_virt_ops - amdgpu device virt operations
82 */
83 struct amdgpu_virt_ops {
84 int (*req_full_gpu)(struct amdgpu_device *adev, bool init);
85 int (*rel_full_gpu)(struct amdgpu_device *adev, bool init);
86 int (*req_init_data)(struct amdgpu_device *adev);
87 int (*reset_gpu)(struct amdgpu_device *adev);
88 int (*wait_reset)(struct amdgpu_device *adev);
89 void (*trans_msg)(struct amdgpu_device *adev, enum idh_request req,
90 u32 data1, u32 data2, u32 data3);
91 void (*ras_poison_handler)(struct amdgpu_device *adev);
92 };
93
94 /*
95 * Firmware Reserve Frame buffer
96 */
97 struct amdgpu_virt_fw_reserve {
98 struct amd_sriov_msg_pf2vf_info_header *p_pf2vf;
99 struct amd_sriov_msg_vf2pf_info_header *p_vf2pf;
100 unsigned int checksum_key;
101 };
102
103 /*
104 * Legacy GIM header
105 *
106 * Defination between PF and VF
107 * Structures forcibly aligned to 4 to keep the same style as PF.
108 */
109 #define AMDGIM_DATAEXCHANGE_OFFSET (64 * 1024)
110
111 #define AMDGIM_GET_STRUCTURE_RESERVED_SIZE(total, u8, u16, u32, u64) \
112 (total - (((u8)+3) / 4 + ((u16)+1) / 2 + (u32) + (u64)*2))
113
114 enum AMDGIM_FEATURE_FLAG {
115 /* GIM supports feature of Error log collecting */
116 AMDGIM_FEATURE_ERROR_LOG_COLLECT = 0x1,
117 /* GIM supports feature of loading uCodes */
118 AMDGIM_FEATURE_GIM_LOAD_UCODES = 0x2,
119 /* VRAM LOST by GIM */
120 AMDGIM_FEATURE_GIM_FLR_VRAMLOST = 0x4,
121 /* MM bandwidth */
122 AMDGIM_FEATURE_GIM_MM_BW_MGR = 0x8,
123 /* PP ONE VF MODE in GIM */
124 AMDGIM_FEATURE_PP_ONE_VF = (1 << 4),
125 /* Indirect Reg Access enabled */
126 AMDGIM_FEATURE_INDIRECT_REG_ACCESS = (1 << 5),
127 };
128
129 enum AMDGIM_REG_ACCESS_FLAG {
130 /* Use PSP to program IH_RB_CNTL */
131 AMDGIM_FEATURE_IH_REG_PSP_EN = (1 << 0),
132 /* Use RLC to program MMHUB regs */
133 AMDGIM_FEATURE_MMHUB_REG_RLC_EN = (1 << 1),
134 /* Use RLC to program GC regs */
135 AMDGIM_FEATURE_GC_REG_RLC_EN = (1 << 2),
136 };
137
138 struct amdgim_pf2vf_info_v1 {
139 /* header contains size and version */
140 struct amd_sriov_msg_pf2vf_info_header header;
141 /* max_width * max_height */
142 unsigned int uvd_enc_max_pixels_count;
143 /* 16x16 pixels/sec, codec independent */
144 unsigned int uvd_enc_max_bandwidth;
145 /* max_width * max_height */
146 unsigned int vce_enc_max_pixels_count;
147 /* 16x16 pixels/sec, codec independent */
148 unsigned int vce_enc_max_bandwidth;
149 /* MEC FW position in kb from the start of visible frame buffer */
150 unsigned int mecfw_kboffset;
151 /* The features flags of the GIM driver supports. */
152 unsigned int feature_flags;
153 /* use private key from mailbox 2 to create chueksum */
154 unsigned int checksum;
155 } __aligned(4);
156
157 struct amdgim_vf2pf_info_v1 {
158 /* header contains size and version */
159 struct amd_sriov_msg_vf2pf_info_header header;
160 /* driver version */
161 char driver_version[64];
162 /* driver certification, 1=WHQL, 0=None */
163 unsigned int driver_cert;
164 /* guest OS type and version: need a define */
165 unsigned int os_info;
166 /* in the unit of 1M */
167 unsigned int fb_usage;
168 /* guest gfx engine usage percentage */
169 unsigned int gfx_usage;
170 /* guest gfx engine health percentage */
171 unsigned int gfx_health;
172 /* guest compute engine usage percentage */
173 unsigned int compute_usage;
174 /* guest compute engine health percentage */
175 unsigned int compute_health;
176 /* guest vce engine usage percentage. 0xffff means N/A. */
177 unsigned int vce_enc_usage;
178 /* guest vce engine health percentage. 0xffff means N/A. */
179 unsigned int vce_enc_health;
180 /* guest uvd engine usage percentage. 0xffff means N/A. */
181 unsigned int uvd_enc_usage;
182 /* guest uvd engine usage percentage. 0xffff means N/A. */
183 unsigned int uvd_enc_health;
184 unsigned int checksum;
185 } __aligned(4);
186
187 struct amdgim_vf2pf_info_v2 {
188 /* header contains size and version */
189 struct amd_sriov_msg_vf2pf_info_header header;
190 uint32_t checksum;
191 /* driver version */
192 uint8_t driver_version[64];
193 /* driver certification, 1=WHQL, 0=None */
194 uint32_t driver_cert;
195 /* guest OS type and version: need a define */
196 uint32_t os_info;
197 /* in the unit of 1M */
198 uint32_t fb_usage;
199 /* guest gfx engine usage percentage */
200 uint32_t gfx_usage;
201 /* guest gfx engine health percentage */
202 uint32_t gfx_health;
203 /* guest compute engine usage percentage */
204 uint32_t compute_usage;
205 /* guest compute engine health percentage */
206 uint32_t compute_health;
207 /* guest vce engine usage percentage. 0xffff means N/A. */
208 uint32_t vce_enc_usage;
209 /* guest vce engine health percentage. 0xffff means N/A. */
210 uint32_t vce_enc_health;
211 /* guest uvd engine usage percentage. 0xffff means N/A. */
212 uint32_t uvd_enc_usage;
213 /* guest uvd engine usage percentage. 0xffff means N/A. */
214 uint32_t uvd_enc_health;
215 uint32_t reserved[AMDGIM_GET_STRUCTURE_RESERVED_SIZE(256, 64, 0, (12 + sizeof(struct amd_sriov_msg_vf2pf_info_header)/sizeof(uint32_t)), 0)];
216 } __aligned(4);
217
218 struct amdgpu_virt_ras_err_handler_data {
219 /* point to bad page records array */
220 struct eeprom_table_record *bps;
221 /* point to reserved bo array */
222 struct amdgpu_bo **bps_bo;
223 /* the count of entries */
224 int count;
225 /* last reserved entry's index + 1 */
226 int last_reserved;
227 };
228
229 /* GPU virtualization */
230 struct amdgpu_virt {
231 uint32_t caps;
232 struct amdgpu_bo *csa_obj;
233 void *csa_cpu_addr;
234 bool chained_ib_support;
235 uint32_t reg_val_offs;
236 struct amdgpu_irq_src ack_irq;
237 struct amdgpu_irq_src rcv_irq;
238 struct work_struct flr_work;
239 struct amdgpu_mm_table mm_table;
240 const struct amdgpu_virt_ops *ops;
241 struct amdgpu_vf_error_buffer vf_errors;
242 struct amdgpu_virt_fw_reserve fw_reserve;
243 uint32_t gim_feature;
244 uint32_t reg_access_mode;
245 int req_init_data_ver;
246 bool tdr_debug;
247 struct amdgpu_virt_ras_err_handler_data *virt_eh_data;
248 bool ras_init_done;
249 uint32_t reg_access;
250
251 /* vf2pf message */
252 struct delayed_work vf2pf_work;
253 uint32_t vf2pf_update_interval_ms;
254
255 /* multimedia bandwidth config */
256 bool is_mm_bw_enabled;
257 uint32_t decode_max_dimension_pixels;
258 uint32_t decode_max_frame_pixels;
259 uint32_t encode_max_dimension_pixels;
260 uint32_t encode_max_frame_pixels;
261
262 /* the ucode id to signal the autoload */
263 uint32_t autoload_ucode_id;
264 };
265
266 struct amdgpu_video_codec_info;
267
268 #define amdgpu_sriov_enabled(adev) \
269 ((adev)->virt.caps & AMDGPU_SRIOV_CAPS_ENABLE_IOV)
270
271 #define amdgpu_sriov_vf(adev) \
272 ((adev)->virt.caps & AMDGPU_SRIOV_CAPS_IS_VF)
273
274 #define amdgpu_sriov_bios(adev) \
275 ((adev)->virt.caps & AMDGPU_SRIOV_CAPS_SRIOV_VBIOS)
276
277 #define amdgpu_sriov_runtime(adev) \
278 ((adev)->virt.caps & AMDGPU_SRIOV_CAPS_RUNTIME)
279
280 #define amdgpu_sriov_fullaccess(adev) \
281 (amdgpu_sriov_vf((adev)) && !amdgpu_sriov_runtime((adev)))
282
283 #define amdgpu_sriov_reg_indirect_en(adev) \
284 (amdgpu_sriov_vf((adev)) && \
285 ((adev)->virt.gim_feature & (AMDGIM_FEATURE_INDIRECT_REG_ACCESS)))
286
287 #define amdgpu_sriov_reg_indirect_ih(adev) \
288 (amdgpu_sriov_vf((adev)) && \
289 ((adev)->virt.reg_access & (AMDGIM_FEATURE_IH_REG_PSP_EN)))
290
291 #define amdgpu_sriov_reg_indirect_mmhub(adev) \
292 (amdgpu_sriov_vf((adev)) && \
293 ((adev)->virt.reg_access & (AMDGIM_FEATURE_MMHUB_REG_RLC_EN)))
294
295 #define amdgpu_sriov_reg_indirect_gc(adev) \
296 (amdgpu_sriov_vf((adev)) && \
297 ((adev)->virt.reg_access & (AMDGIM_FEATURE_GC_REG_RLC_EN)))
298
299 #define amdgpu_sriov_rlcg_error_report_enabled(adev) \
300 (amdgpu_sriov_reg_indirect_mmhub(adev) || amdgpu_sriov_reg_indirect_gc(adev))
301
302 #define amdgpu_passthrough(adev) \
303 ((adev)->virt.caps & AMDGPU_PASSTHROUGH_MODE)
304
305 #define amdgpu_sriov_vf_mmio_access_protection(adev) \
306 ((adev)->virt.caps & AMDGPU_VF_MMIO_ACCESS_PROTECT)
307
is_virtual_machine(void)308 static inline bool is_virtual_machine(void)
309 {
310 #if defined(CONFIG_X86)
311 return boot_cpu_has(X86_FEATURE_HYPERVISOR);
312 #elif defined(CONFIG_ARM64)
313 return !is_kernel_in_hyp_mode();
314 #else
315 return false;
316 #endif
317 }
318
319 #define amdgpu_sriov_is_pp_one_vf(adev) \
320 ((adev)->virt.gim_feature & AMDGIM_FEATURE_PP_ONE_VF)
321 #define amdgpu_sriov_is_debug(adev) \
322 ((!amdgpu_in_reset(adev)) && adev->virt.tdr_debug)
323 #define amdgpu_sriov_is_normal(adev) \
324 ((!amdgpu_in_reset(adev)) && (!adev->virt.tdr_debug))
325 bool amdgpu_virt_mmio_blocked(struct amdgpu_device *adev);
326 void amdgpu_virt_init_setting(struct amdgpu_device *adev);
327 void amdgpu_virt_kiq_reg_write_reg_wait(struct amdgpu_device *adev,
328 uint32_t reg0, uint32_t rreg1,
329 uint32_t ref, uint32_t mask);
330 int amdgpu_virt_request_full_gpu(struct amdgpu_device *adev, bool init);
331 int amdgpu_virt_release_full_gpu(struct amdgpu_device *adev, bool init);
332 int amdgpu_virt_reset_gpu(struct amdgpu_device *adev);
333 void amdgpu_virt_request_init_data(struct amdgpu_device *adev);
334 int amdgpu_virt_wait_reset(struct amdgpu_device *adev);
335 int amdgpu_virt_alloc_mm_table(struct amdgpu_device *adev);
336 void amdgpu_virt_free_mm_table(struct amdgpu_device *adev);
337 void amdgpu_virt_release_ras_err_handler_data(struct amdgpu_device *adev);
338 void amdgpu_virt_init_data_exchange(struct amdgpu_device *adev);
339 void amdgpu_virt_exchange_data(struct amdgpu_device *adev);
340 void amdgpu_virt_fini_data_exchange(struct amdgpu_device *adev);
341 void amdgpu_detect_virtualization(struct amdgpu_device *adev);
342
343 bool amdgpu_virt_can_access_debugfs(struct amdgpu_device *adev);
344 int amdgpu_virt_enable_access_debugfs(struct amdgpu_device *adev);
345 void amdgpu_virt_disable_access_debugfs(struct amdgpu_device *adev);
346
347 enum amdgpu_sriov_vf_mode amdgpu_virt_get_sriov_vf_mode(struct amdgpu_device *adev);
348
349 void amdgpu_virt_update_sriov_video_codec(struct amdgpu_device *adev,
350 struct amdgpu_video_codec_info *encode, uint32_t encode_array_size,
351 struct amdgpu_video_codec_info *decode, uint32_t decode_array_size);
352 void amdgpu_sriov_wreg(struct amdgpu_device *adev,
353 u32 offset, u32 value,
354 u32 acc_flags, u32 hwip);
355 u32 amdgpu_sriov_rreg(struct amdgpu_device *adev,
356 u32 offset, u32 acc_flags, u32 hwip);
357 bool amdgpu_virt_fw_load_skip_check(struct amdgpu_device *adev,
358 uint32_t ucode_id);
359 #endif
360