Alex Deucher | 0936139 | 2015-04-20 12:04:22 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2014 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 | */ |
| 23 | |
| 24 | /** |
| 25 | * \file amdgpu_device.c |
| 26 | * |
| 27 | * Implementation of functions for AMD GPU device |
| 28 | * |
| 29 | * |
| 30 | */ |
| 31 | |
| 32 | #include <sys/stat.h> |
| 33 | #include <errno.h> |
| 34 | #include <string.h> |
| 35 | #include <stdio.h> |
| 36 | #include <stdlib.h> |
| 37 | |
| 38 | #include "xf86drm.h" |
| 39 | #include "amdgpu_drm.h" |
| 40 | #include "amdgpu_internal.h" |
| 41 | #include "util_hash_table.h" |
| 42 | |
| 43 | #define PTR_TO_UINT(x) ((unsigned)((intptr_t)(x))) |
| 44 | #define UINT_TO_PTR(x) ((void *)((intptr_t)(x))) |
Alex Deucher | 0936139 | 2015-04-20 12:04:22 -0400 | [diff] [blame] | 45 | |
| 46 | pthread_mutex_t fd_mutex = PTHREAD_MUTEX_INITIALIZER; |
| 47 | static struct util_hash_table *fd_tab; |
| 48 | |
| 49 | static unsigned handle_hash(void *key) |
| 50 | { |
| 51 | return PTR_TO_UINT(key); |
| 52 | } |
| 53 | |
| 54 | static int handle_compare(void *key1, void *key2) |
| 55 | { |
| 56 | return PTR_TO_UINT(key1) != PTR_TO_UINT(key2); |
| 57 | } |
| 58 | |
| 59 | static unsigned fd_hash(void *key) |
| 60 | { |
| 61 | int fd = PTR_TO_UINT(key); |
Christian König | c68d58a | 2015-04-30 14:13:28 +0200 | [diff] [blame] | 62 | char *name = drmGetPrimaryDeviceNameFromFd(fd); |
| 63 | unsigned result = 0; |
| 64 | char *c; |
Alex Deucher | 0936139 | 2015-04-20 12:04:22 -0400 | [diff] [blame] | 65 | |
Christian König | c68d58a | 2015-04-30 14:13:28 +0200 | [diff] [blame] | 66 | if (name == NULL) |
| 67 | return 0; |
| 68 | |
| 69 | for (c = name; *c; ++c) |
| 70 | result += *c; |
| 71 | |
| 72 | free(name); |
| 73 | |
| 74 | return result; |
Alex Deucher | 0936139 | 2015-04-20 12:04:22 -0400 | [diff] [blame] | 75 | } |
| 76 | |
| 77 | static int fd_compare(void *key1, void *key2) |
| 78 | { |
| 79 | int fd1 = PTR_TO_UINT(key1); |
| 80 | int fd2 = PTR_TO_UINT(key2); |
Christian König | c68d58a | 2015-04-30 14:13:28 +0200 | [diff] [blame] | 81 | char *name1 = drmGetPrimaryDeviceNameFromFd(fd1); |
| 82 | char *name2 = drmGetPrimaryDeviceNameFromFd(fd2); |
| 83 | int result; |
Alex Deucher | 0936139 | 2015-04-20 12:04:22 -0400 | [diff] [blame] | 84 | |
Christian König | c68d58a | 2015-04-30 14:13:28 +0200 | [diff] [blame] | 85 | if (name1 == NULL || name2 == NULL) { |
| 86 | free(name1); |
| 87 | free(name2); |
| 88 | return 0; |
| 89 | } |
| 90 | |
| 91 | result = strcmp(name1, name2); |
| 92 | free(name1); |
| 93 | free(name2); |
| 94 | |
| 95 | return result; |
Alex Deucher | 0936139 | 2015-04-20 12:04:22 -0400 | [diff] [blame] | 96 | } |
| 97 | |
| 98 | /** |
| 99 | * Get the authenticated form fd, |
| 100 | * |
| 101 | * \param fd - \c [in] File descriptor for AMD GPU device |
| 102 | * \param auth - \c [out] Pointer to output the fd is authenticated or not |
| 103 | * A render node fd, output auth = 0 |
| 104 | * A legacy fd, get the authenticated for compatibility root |
| 105 | * |
| 106 | * \return 0 on success\n |
| 107 | * >0 - AMD specific error code\n |
| 108 | * <0 - Negative POSIX Error code |
| 109 | */ |
| 110 | static int amdgpu_get_auth(int fd, int *auth) |
| 111 | { |
| 112 | int r = 0; |
Marek Olšák | 7d7f25c | 2015-06-04 18:57:50 +0200 | [diff] [blame] | 113 | drm_client_t client = {}; |
Alex Deucher | 0936139 | 2015-04-20 12:04:22 -0400 | [diff] [blame] | 114 | |
| 115 | if (drmGetNodeTypeFromFd(fd) == DRM_NODE_RENDER) |
| 116 | *auth = 0; |
| 117 | else { |
| 118 | client.idx = 0; |
| 119 | r = drmIoctl(fd, DRM_IOCTL_GET_CLIENT, &client); |
| 120 | if (!r) |
| 121 | *auth = client.auth; |
| 122 | } |
| 123 | return r; |
| 124 | } |
| 125 | |
| 126 | int amdgpu_device_initialize(int fd, |
| 127 | uint32_t *major_version, |
| 128 | uint32_t *minor_version, |
| 129 | amdgpu_device_handle *device_handle) |
| 130 | { |
| 131 | struct amdgpu_device *dev; |
| 132 | drmVersionPtr version; |
| 133 | int r; |
| 134 | int flag_auth = 0; |
| 135 | int flag_authexist=0; |
Marek Olšák | 2d58879 | 2015-05-06 18:59:02 +0200 | [diff] [blame] | 136 | uint32_t accel_working = 0; |
Alex Deucher | 0936139 | 2015-04-20 12:04:22 -0400 | [diff] [blame] | 137 | |
| 138 | *device_handle = NULL; |
| 139 | |
| 140 | pthread_mutex_lock(&fd_mutex); |
| 141 | if (!fd_tab) |
| 142 | fd_tab = util_hash_table_create(fd_hash, fd_compare); |
| 143 | r = amdgpu_get_auth(fd, &flag_auth); |
| 144 | if (r) { |
| 145 | pthread_mutex_unlock(&fd_mutex); |
| 146 | return r; |
| 147 | } |
| 148 | dev = util_hash_table_get(fd_tab, UINT_TO_PTR(fd)); |
| 149 | if (dev) { |
| 150 | r = amdgpu_get_auth(dev->fd, &flag_authexist); |
| 151 | if (r) { |
| 152 | pthread_mutex_unlock(&fd_mutex); |
| 153 | return r; |
| 154 | } |
| 155 | if ((flag_auth) && (!flag_authexist)) { |
| 156 | dev->flink_fd = fd; |
| 157 | } |
| 158 | *major_version = dev->major_version; |
| 159 | *minor_version = dev->minor_version; |
| 160 | amdgpu_device_reference(device_handle, dev); |
| 161 | pthread_mutex_unlock(&fd_mutex); |
| 162 | return 0; |
| 163 | } |
| 164 | |
| 165 | dev = calloc(1, sizeof(struct amdgpu_device)); |
| 166 | if (!dev) { |
| 167 | pthread_mutex_unlock(&fd_mutex); |
| 168 | return -ENOMEM; |
| 169 | } |
| 170 | |
| 171 | atomic_set(&dev->refcount, 1); |
| 172 | |
| 173 | version = drmGetVersion(fd); |
| 174 | if (version->version_major != 3) { |
| 175 | fprintf(stderr, "%s: DRM version is %d.%d.%d but this driver is " |
| 176 | "only compatible with 3.x.x.\n", |
| 177 | __func__, |
| 178 | version->version_major, |
| 179 | version->version_minor, |
| 180 | version->version_patchlevel); |
| 181 | drmFreeVersion(version); |
| 182 | r = -EBADF; |
| 183 | goto cleanup; |
| 184 | } |
| 185 | |
| 186 | dev->fd = fd; |
| 187 | dev->flink_fd = fd; |
| 188 | dev->major_version = version->version_major; |
| 189 | dev->minor_version = version->version_minor; |
| 190 | drmFreeVersion(version); |
| 191 | |
| 192 | dev->bo_flink_names = util_hash_table_create(handle_hash, |
| 193 | handle_compare); |
| 194 | dev->bo_handles = util_hash_table_create(handle_hash, handle_compare); |
Alex Deucher | 0936139 | 2015-04-20 12:04:22 -0400 | [diff] [blame] | 195 | pthread_mutex_init(&dev->bo_table_mutex, NULL); |
| 196 | |
| 197 | /* Check if acceleration is working. */ |
| 198 | r = amdgpu_query_info(dev, AMDGPU_INFO_ACCEL_WORKING, 4, &accel_working); |
| 199 | if (r) |
| 200 | goto cleanup; |
| 201 | if (!accel_working) { |
| 202 | r = -EBADF; |
| 203 | goto cleanup; |
| 204 | } |
| 205 | |
| 206 | r = amdgpu_query_gpu_info_init(dev); |
| 207 | if (r) |
| 208 | goto cleanup; |
| 209 | |
Ken Wang | 322d02d | 2015-05-21 17:21:21 +0800 | [diff] [blame] | 210 | dev->vamgr = amdgpu_vamgr_get_global(dev); |
Alex Deucher | 0936139 | 2015-04-20 12:04:22 -0400 | [diff] [blame] | 211 | |
| 212 | *major_version = dev->major_version; |
| 213 | *minor_version = dev->minor_version; |
| 214 | *device_handle = dev; |
| 215 | util_hash_table_set(fd_tab, UINT_TO_PTR(fd), dev); |
| 216 | pthread_mutex_unlock(&fd_mutex); |
| 217 | |
| 218 | return 0; |
| 219 | |
| 220 | cleanup: |
| 221 | free(dev); |
| 222 | pthread_mutex_unlock(&fd_mutex); |
| 223 | return r; |
| 224 | } |
| 225 | |
| 226 | void amdgpu_device_free_internal(amdgpu_device_handle dev) |
| 227 | { |
Ken Wang | 322d02d | 2015-05-21 17:21:21 +0800 | [diff] [blame] | 228 | amdgpu_vamgr_reference(&dev->vamgr, NULL); |
Alex Deucher | 0936139 | 2015-04-20 12:04:22 -0400 | [diff] [blame] | 229 | util_hash_table_destroy(dev->bo_flink_names); |
| 230 | util_hash_table_destroy(dev->bo_handles); |
Alex Deucher | 0936139 | 2015-04-20 12:04:22 -0400 | [diff] [blame] | 231 | pthread_mutex_destroy(&dev->bo_table_mutex); |
Alex Deucher | 0936139 | 2015-04-20 12:04:22 -0400 | [diff] [blame] | 232 | util_hash_table_remove(fd_tab, UINT_TO_PTR(dev->fd)); |
| 233 | free(dev); |
| 234 | } |
| 235 | |
| 236 | int amdgpu_device_deinitialize(amdgpu_device_handle dev) |
| 237 | { |
| 238 | amdgpu_device_reference(&dev, NULL); |
| 239 | return 0; |
| 240 | } |
| 241 | |
| 242 | void amdgpu_device_reference(struct amdgpu_device **dst, |
| 243 | struct amdgpu_device *src) |
| 244 | { |
| 245 | if (update_references(&(*dst)->refcount, &src->refcount)) |
| 246 | amdgpu_device_free_internal(*dst); |
| 247 | *dst = src; |
| 248 | } |