drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h

   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 #define AMDGPU_SRIOV_CAPS_SRIOV_VBIOS  (1 << 0) /* vBIOS is sr-iov ready */
  28 #define AMDGPU_SRIOV_CAPS_ENABLE_IOV   (1 << 1) /* sr-iov is enabled on this GPU */
  29 #define AMDGPU_SRIOV_CAPS_IS_VF        (1 << 2) /* this GPU is a virtual function */
  30 #define AMDGPU_PASSTHROUGH_MODE        (1 << 3) /* thw whole GPU is pass through for VM */
  31 #define AMDGPU_SRIOV_CAPS_RUNTIME      (1 << 4) /* is out of full access mode */
  32
  33 struct amdgpu_mm_table {
  34         struct amdgpu_bo        *bo;
  35         uint32_t                *cpu_addr;
  36         uint64_t                gpu_addr;
  37 };
  38
  39 #define AMDGPU_VF_ERROR_ENTRY_SIZE    16
  40
  41 /* struct error_entry - amdgpu VF error information. */
  42 struct amdgpu_vf_error_buffer {
  43         struct mutex lock;
  44         int read_count;
  45         int write_count;
  46         uint16_t code[AMDGPU_VF_ERROR_ENTRY_SIZE];
  47         uint16_t flags[AMDGPU_VF_ERROR_ENTRY_SIZE];
  48         uint64_t data[AMDGPU_VF_ERROR_ENTRY_SIZE];
  49 };
  50
  51 /**
  52  * struct amdgpu_virt_ops - amdgpu device virt operations
  53  */
  54 struct amdgpu_virt_ops {
  55         int (*req_full_gpu)(struct amdgpu_device *adev, bool init);
  56         int (*rel_full_gpu)(struct amdgpu_device *adev, bool init);
  57         int (*reset_gpu)(struct amdgpu_device *adev);
  58         int (*wait_reset)(struct amdgpu_device *adev);
  59         void (*trans_msg)(struct amdgpu_device *adev, u32 req, u32 data1, u32 data2, u32 data3);
  60 };
  61
  62 /*
  63  * Firmware Reserve Frame buffer
  64  */
  65 struct amdgpu_virt_fw_reserve {
  66         struct amd_sriov_msg_pf2vf_info_header *p_pf2vf;
  67         struct amd_sriov_msg_vf2pf_info_header *p_vf2pf;
  68         unsigned int checksum_key;
  69 };
  70 /*
  71  * Defination between PF and VF
  72  * Structures forcibly aligned to 4 to keep the same style as PF.
  73  */
  74 #define AMDGIM_DATAEXCHANGE_OFFSET              (64 * 1024)
  75
  76 #define AMDGIM_GET_STRUCTURE_RESERVED_SIZE(total, u8, u16, u32, u64) \
  77                 (total - (((u8)+3) / 4 + ((u16)+1) / 2 + (u32) + (u64)*2))
  78
  79 enum AMDGIM_FEATURE_FLAG {
  80         /* GIM supports feature of Error log collecting */
  81         AMDGIM_FEATURE_ERROR_LOG_COLLECT = 0x1,
  82         /* GIM supports feature of loading uCodes */
  83         AMDGIM_FEATURE_GIM_LOAD_UCODES   = 0x2,
  84         /* VRAM LOST by GIM */
  85         AMDGIM_FEATURE_GIM_FLR_VRAMLOST = 0x4,
  86 };
  87
  88 struct amd_sriov_msg_pf2vf_info_header {
  89         /* the total structure size in byte. */
  90         uint32_t size;
  91         /* version of this structure, written by the GIM */
  92         uint32_t version;
  93         /* reserved */
  94         uint32_t reserved[2];
  95 } __aligned(4);
  96 struct  amdgim_pf2vf_info_v1 {
  97         /* header contains size and version */
  98         struct amd_sriov_msg_pf2vf_info_header header;
  99         /* max_width * max_height */
 100         unsigned int uvd_enc_max_pixels_count;
 101         /* 16x16 pixels/sec, codec independent */
 102         unsigned int uvd_enc_max_bandwidth;
 103         /* max_width * max_height */
 104         unsigned int vce_enc_max_pixels_count;
 105         /* 16x16 pixels/sec, codec independent */
 106         unsigned int vce_enc_max_bandwidth;
 107         /* MEC FW position in kb from the start of visible frame buffer */
 108         unsigned int mecfw_kboffset;
 109         /* The features flags of the GIM driver supports. */
 110         unsigned int feature_flags;
 111         /* use private key from mailbox 2 to create chueksum */
 112         unsigned int checksum;
 113 } __aligned(4);
 114
 115 struct  amdgim_pf2vf_info_v2 {
 116         /* header contains size and version */
 117         struct amd_sriov_msg_pf2vf_info_header header;
 118         /* use private key from mailbox 2 to create chueksum */
 119         uint32_t checksum;
 120         /* The features flags of the GIM driver supports. */
 121         uint32_t feature_flags;
 122         /* max_width * max_height */
 123         uint32_t uvd_enc_max_pixels_count;
 124         /* 16x16 pixels/sec, codec independent */
 125         uint32_t uvd_enc_max_bandwidth;
 126         /* max_width * max_height */
 127         uint32_t vce_enc_max_pixels_count;
 128         /* 16x16 pixels/sec, codec independent */
 129         uint32_t vce_enc_max_bandwidth;
 130         /* MEC FW position in kb from the start of VF visible frame buffer */
 131         uint64_t mecfw_kboffset;
 132         /* MEC FW size in KB */
 133         uint32_t mecfw_ksize;
 134         /* UVD FW position in kb from the start of VF visible frame buffer */
 135         uint64_t uvdfw_kboffset;
 136         /* UVD FW size in KB */
 137         uint32_t uvdfw_ksize;
 138         /* VCE FW position in kb from the start of VF visible frame buffer */
 139         uint64_t vcefw_kboffset;
 140         /* VCE FW size in KB */
 141         uint32_t vcefw_ksize;
 142         uint32_t reserved[AMDGIM_GET_STRUCTURE_RESERVED_SIZE(256, 0, 0, (9 + sizeof(struct amd_sriov_msg_pf2vf_info_header)/sizeof(uint32_t)), 3)];
 143 } __aligned(4);
 144
 145
 146 struct amd_sriov_msg_vf2pf_info_header {
 147         /* the total structure size in byte. */
 148         uint32_t size;
 149         /*version of this structure, written by the guest */
 150         uint32_t version;
 151         /* reserved */
 152         uint32_t reserved[2];
 153 } __aligned(4);
 154
 155 struct amdgim_vf2pf_info_v1 {
 156         /* header contains size and version */
 157         struct amd_sriov_msg_vf2pf_info_header header;
 158         /* driver version */
 159         char driver_version[64];
 160         /* driver certification, 1=WHQL, 0=None */
 161         unsigned int driver_cert;
 162         /* guest OS type and version: need a define */
 163         unsigned int os_info;
 164         /* in the unit of 1M */
 165         unsigned int fb_usage;
 166         /* guest gfx engine usage percentage */
 167         unsigned int gfx_usage;
 168         /* guest gfx engine health percentage */
 169         unsigned int gfx_health;
 170         /* guest compute engine usage percentage */
 171         unsigned int compute_usage;
 172         /* guest compute engine health percentage */
 173         unsigned int compute_health;
 174         /* guest vce engine usage percentage. 0xffff means N/A. */
 175         unsigned int vce_enc_usage;
 176         /* guest vce engine health percentage. 0xffff means N/A. */
 177         unsigned int vce_enc_health;
 178         /* guest uvd engine usage percentage. 0xffff means N/A. */
 179         unsigned int uvd_enc_usage;
 180         /* guest uvd engine usage percentage. 0xffff means N/A. */
 181         unsigned int uvd_enc_health;
 182         unsigned int checksum;
 183 } __aligned(4);
 184
 185 struct amdgim_vf2pf_info_v2 {
 186         /* header contains size and version */
 187         struct amd_sriov_msg_vf2pf_info_header header;
 188         uint32_t checksum;
 189         /* driver version */
 190         uint8_t driver_version[64];
 191         /* driver certification, 1=WHQL, 0=None */
 192         uint32_t driver_cert;
 193         /* guest OS type and version: need a define */
 194         uint32_t os_info;
 195         /* in the unit of 1M */
 196         uint32_t fb_usage;
 197         /* guest gfx engine usage percentage */
 198         uint32_t gfx_usage;
 199         /* guest gfx engine health percentage */
 200         uint32_t gfx_health;
 201         /* guest compute engine usage percentage */
 202         uint32_t compute_usage;
 203         /* guest compute engine health percentage */
 204         uint32_t compute_health;
 205         /* guest vce engine usage percentage. 0xffff means N/A. */
 206         uint32_t vce_enc_usage;
 207         /* guest vce engine health percentage. 0xffff means N/A. */
 208         uint32_t vce_enc_health;
 209         /* guest uvd engine usage percentage. 0xffff means N/A. */
 210         uint32_t uvd_enc_usage;
 211         /* guest uvd engine usage percentage. 0xffff means N/A. */
 212         uint32_t uvd_enc_health;
 213         uint32_t reserved[AMDGIM_GET_STRUCTURE_RESERVED_SIZE(256, 64, 0, (12 + sizeof(struct amd_sriov_msg_vf2pf_info_header)/sizeof(uint32_t)), 0)];
 214 } __aligned(4);
 215
 216 #define AMDGPU_FW_VRAM_VF2PF_VER 2
 217 typedef struct amdgim_vf2pf_info_v2 amdgim_vf2pf_info ;
 218
 219 #define AMDGPU_FW_VRAM_VF2PF_WRITE(adev, field, val) \
 220         do { \
 221                 ((amdgim_vf2pf_info *)adev->virt.fw_reserve.p_vf2pf)->field = (val); \
 222         } while (0)
 223
 224 #define AMDGPU_FW_VRAM_VF2PF_READ(adev, field, val) \
 225         do { \
 226                 (*val) = ((amdgim_vf2pf_info *)adev->virt.fw_reserve.p_vf2pf)->field; \
 227         } while (0)
 228
 229 #define AMDGPU_FW_VRAM_PF2VF_READ(adev, field, val) \
 230         do { \
 231                 if (!adev->virt.fw_reserve.p_pf2vf) \
 232                         *(val) = 0; \
 233                 else { \
 234                         if (adev->virt.fw_reserve.p_pf2vf->version == 1) \
 235                                 *(val) = ((struct amdgim_pf2vf_info_v1 *)adev->virt.fw_reserve.p_pf2vf)->field; \
 236                         if (adev->virt.fw_reserve.p_pf2vf->version == 2) \
 237                                 *(val) = ((struct amdgim_pf2vf_info_v2 *)adev->virt.fw_reserve.p_pf2vf)->field; \
 238                 } \
 239         } while (0)
 240
 241 /* GPU virtualization */
 242 struct amdgpu_virt {
 243         uint32_t                        caps;
 244         struct amdgpu_bo                *csa_obj;
 245         bool chained_ib_support;
 246         uint32_t                        reg_val_offs;
 247         struct amdgpu_irq_src           ack_irq;
 248         struct amdgpu_irq_src           rcv_irq;
 249         struct work_struct              flr_work;
 250         struct amdgpu_mm_table          mm_table;
 251         const struct amdgpu_virt_ops    *ops;
 252         struct amdgpu_vf_error_buffer   vf_errors;
 253         struct amdgpu_virt_fw_reserve   fw_reserve;
 254         uint32_t gim_feature;
 255 };
 256
 257 #define amdgpu_sriov_enabled(adev) \
 258 ((adev)->virt.caps & AMDGPU_SRIOV_CAPS_ENABLE_IOV)
 259
 260 #define amdgpu_sriov_vf(adev) \
 261 ((adev)->virt.caps & AMDGPU_SRIOV_CAPS_IS_VF)
 262
 263 #define amdgpu_sriov_bios(adev) \
 264 ((adev)->virt.caps & AMDGPU_SRIOV_CAPS_SRIOV_VBIOS)
 265
 266 #define amdgpu_sriov_runtime(adev) \
 267 ((adev)->virt.caps & AMDGPU_SRIOV_CAPS_RUNTIME)
 268
 269 #define amdgpu_passthrough(adev) \
 270 ((adev)->virt.caps & AMDGPU_PASSTHROUGH_MODE)
 271
 272 static inline bool is_virtual_machine(void)
 273 {
 274 #ifdef CONFIG_X86
 275         return boot_cpu_has(X86_FEATURE_HYPERVISOR);
 276 #else
 277         return false;
 278 #endif
 279 }
 280
 281 bool amdgpu_virt_mmio_blocked(struct amdgpu_device *adev);
 282 void amdgpu_virt_init_setting(struct amdgpu_device *adev);
 283 uint32_t amdgpu_virt_kiq_rreg(struct amdgpu_device *adev, uint32_t reg);
 284 void amdgpu_virt_kiq_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v);
 285 void amdgpu_virt_kiq_reg_write_reg_wait(struct amdgpu_device *adev,
 286                                         uint32_t reg0, uint32_t rreg1,
 287                                         uint32_t ref, uint32_t mask);
 288 int amdgpu_virt_request_full_gpu(struct amdgpu_device *adev, bool init);
 289 int amdgpu_virt_release_full_gpu(struct amdgpu_device *adev, bool init);
 290 int amdgpu_virt_reset_gpu(struct amdgpu_device *adev);
 291 int amdgpu_virt_wait_reset(struct amdgpu_device *adev);
 292 int amdgpu_virt_alloc_mm_table(struct amdgpu_device *adev);
 293 void amdgpu_virt_free_mm_table(struct amdgpu_device *adev);
 294 int amdgpu_virt_fw_reserve_get_checksum(void *obj, unsigned long obj_size,
 295                                         unsigned int key,
 296                                         unsigned int chksum);
 297 void amdgpu_virt_init_data_exchange(struct amdgpu_device *adev);
 298
 299 #endif