2 * Copyright 2014 Advanced Micro Devices, Inc.
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9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
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15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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25 * \file amdgpu_device.c
27 * Implementation of functions for AMD GPU device
43 #include "amdgpu_drm.h"
44 #include "amdgpu_internal.h"
45 #include "util_hash_table.h"
46 #include "util_math.h"
48 #define PTR_TO_UINT(x) ((unsigned)((intptr_t)(x)))
49 #define UINT_TO_PTR(x) ((void *)((intptr_t)(x)))
51 static pthread_mutex_t fd_mutex = PTHREAD_MUTEX_INITIALIZER;
52 static struct util_hash_table *fd_tab;
54 static unsigned handle_hash(void *key)
56 return PTR_TO_UINT(key);
59 static int handle_compare(void *key1, void *key2)
61 return PTR_TO_UINT(key1) != PTR_TO_UINT(key2);
64 static unsigned fd_hash(void *key)
66 int fd = PTR_TO_UINT(key);
67 char *name = drmGetPrimaryDeviceNameFromFd(fd);
74 for (c = name; *c; ++c)
82 static int fd_compare(void *key1, void *key2)
84 int fd1 = PTR_TO_UINT(key1);
85 int fd2 = PTR_TO_UINT(key2);
86 char *name1 = drmGetPrimaryDeviceNameFromFd(fd1);
87 char *name2 = drmGetPrimaryDeviceNameFromFd(fd2);
90 if (name1 == NULL || name2 == NULL) {
96 result = strcmp(name1, name2);
104 * Get the authenticated form fd,
106 * \param fd - \c [in] File descriptor for AMD GPU device
107 * \param auth - \c [out] Pointer to output the fd is authenticated or not
108 * A render node fd, output auth = 0
109 * A legacy fd, get the authenticated for compatibility root
111 * \return 0 on success\n
112 * >0 - AMD specific error code\n
113 * <0 - Negative POSIX Error code
115 static int amdgpu_get_auth(int fd, int *auth)
118 drm_client_t client = {};
120 if (drmGetNodeTypeFromFd(fd) == DRM_NODE_RENDER)
124 r = drmIoctl(fd, DRM_IOCTL_GET_CLIENT, &client);
131 static void amdgpu_device_free_internal(amdgpu_device_handle dev)
133 const struct amdgpu_asic_id *id;
134 amdgpu_vamgr_deinit(&dev->vamgr_32);
135 amdgpu_vamgr_deinit(&dev->vamgr);
136 util_hash_table_destroy(dev->bo_flink_names);
137 util_hash_table_destroy(dev->bo_handles);
138 pthread_mutex_destroy(&dev->bo_table_mutex);
139 util_hash_table_remove(fd_tab, UINT_TO_PTR(dev->fd));
141 if ((dev->flink_fd >= 0) && (dev->fd != dev->flink_fd))
142 close(dev->flink_fd);
144 for (id = dev->asic_ids; id->did; id++)
145 free(id->marketing_name);
153 * Assignment between two amdgpu_device pointers with reference counting.
156 * struct amdgpu_device *dst = ... , *src = ...;
159 * // No reference counting. Only use this when you need to move
160 * // a reference from one pointer to another.
162 * amdgpu_device_reference(&dst, src);
163 * // Reference counters are updated. dst is decremented and src is
164 * // incremented. dst is freed if its reference counter is 0.
166 static void amdgpu_device_reference(struct amdgpu_device **dst,
167 struct amdgpu_device *src)
169 if (update_references(&(*dst)->refcount, &src->refcount))
170 amdgpu_device_free_internal(*dst);
174 int amdgpu_device_initialize(int fd,
175 uint32_t *major_version,
176 uint32_t *minor_version,
177 amdgpu_device_handle *device_handle)
179 struct amdgpu_device *dev;
180 drmVersionPtr version;
183 int flag_authexist=0;
184 uint32_t accel_working = 0;
187 *device_handle = NULL;
189 pthread_mutex_lock(&fd_mutex);
191 fd_tab = util_hash_table_create(fd_hash, fd_compare);
192 r = amdgpu_get_auth(fd, &flag_auth);
194 fprintf(stderr, "%s: amdgpu_get_auth (1) failed (%i)\n",
196 pthread_mutex_unlock(&fd_mutex);
199 dev = util_hash_table_get(fd_tab, UINT_TO_PTR(fd));
201 r = amdgpu_get_auth(dev->fd, &flag_authexist);
203 fprintf(stderr, "%s: amdgpu_get_auth (2) failed (%i)\n",
205 pthread_mutex_unlock(&fd_mutex);
208 if ((flag_auth) && (!flag_authexist)) {
209 dev->flink_fd = dup(fd);
211 *major_version = dev->major_version;
212 *minor_version = dev->minor_version;
213 amdgpu_device_reference(device_handle, dev);
214 pthread_mutex_unlock(&fd_mutex);
218 dev = calloc(1, sizeof(struct amdgpu_device));
220 fprintf(stderr, "%s: calloc failed\n", __func__);
221 pthread_mutex_unlock(&fd_mutex);
228 atomic_set(&dev->refcount, 1);
230 version = drmGetVersion(fd);
231 if (version->version_major != 3) {
232 fprintf(stderr, "%s: DRM version is %d.%d.%d but this driver is "
233 "only compatible with 3.x.x.\n",
235 version->version_major,
236 version->version_minor,
237 version->version_patchlevel);
238 drmFreeVersion(version);
244 dev->flink_fd = dev->fd;
245 dev->major_version = version->version_major;
246 dev->minor_version = version->version_minor;
247 drmFreeVersion(version);
249 dev->bo_flink_names = util_hash_table_create(handle_hash,
251 dev->bo_handles = util_hash_table_create(handle_hash, handle_compare);
252 pthread_mutex_init(&dev->bo_table_mutex, NULL);
254 /* Check if acceleration is working. */
255 r = amdgpu_query_info(dev, AMDGPU_INFO_ACCEL_WORKING, 4, &accel_working);
257 fprintf(stderr, "%s: amdgpu_query_info(ACCEL_WORKING) failed (%i)\n",
261 if (!accel_working) {
262 fprintf(stderr, "%s: AMDGPU_INFO_ACCEL_WORKING = 0\n", __func__);
267 r = amdgpu_query_gpu_info_init(dev);
269 fprintf(stderr, "%s: amdgpu_query_gpu_info_init failed\n", __func__);
273 start = dev->dev_info.virtual_address_offset;
274 max = MIN2(dev->dev_info.virtual_address_max, 0x100000000ULL);
275 amdgpu_vamgr_init(&dev->vamgr_32, start, max,
276 dev->dev_info.virtual_address_alignment);
278 start = MAX2(dev->dev_info.virtual_address_offset, 0x100000000ULL);
279 max = MAX2(dev->dev_info.virtual_address_max, 0x100000000ULL);
280 amdgpu_vamgr_init(&dev->vamgr, start, max,
281 dev->dev_info.virtual_address_alignment);
283 r = amdgpu_parse_asic_ids(&dev->asic_ids);
285 fprintf(stderr, "%s: Cannot parse ASIC IDs, 0x%x.",
289 *major_version = dev->major_version;
290 *minor_version = dev->minor_version;
291 *device_handle = dev;
292 util_hash_table_set(fd_tab, UINT_TO_PTR(dev->fd), dev);
293 pthread_mutex_unlock(&fd_mutex);
301 pthread_mutex_unlock(&fd_mutex);
305 int amdgpu_device_deinitialize(amdgpu_device_handle dev)
307 amdgpu_device_reference(&dev, NULL);
311 const char *amdgpu_get_marketing_name(amdgpu_device_handle dev)
313 const struct amdgpu_asic_id *id;
318 for (id = dev->asic_ids; id->did; id++) {
319 if ((id->did == dev->info.asic_id) &&
320 (id->rid == dev->info.pci_rev_id))
321 return id->marketing_name;