2 * Copyright 2014 Advanced Micro Devices, Inc.
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5 * copy of this software and associated documentation files (the "Software"),
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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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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,
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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 amdgpu_vamgr_deinit(&dev->vamgr_32);
134 amdgpu_vamgr_deinit(&dev->vamgr);
135 util_hash_table_destroy(dev->bo_flink_names);
136 util_hash_table_destroy(dev->bo_handles);
137 pthread_mutex_destroy(&dev->bo_table_mutex);
138 util_hash_table_remove(fd_tab, UINT_TO_PTR(dev->fd));
140 if ((dev->flink_fd >= 0) && (dev->fd != dev->flink_fd))
141 close(dev->flink_fd);
142 free(dev->marketing_name);
147 * Assignment between two amdgpu_device pointers with reference counting.
150 * struct amdgpu_device *dst = ... , *src = ...;
153 * // No reference counting. Only use this when you need to move
154 * // a reference from one pointer to another.
156 * amdgpu_device_reference(&dst, src);
157 * // Reference counters are updated. dst is decremented and src is
158 * // incremented. dst is freed if its reference counter is 0.
160 static void amdgpu_device_reference(struct amdgpu_device **dst,
161 struct amdgpu_device *src)
163 if (update_references(&(*dst)->refcount, &src->refcount))
164 amdgpu_device_free_internal(*dst);
168 int amdgpu_device_initialize(int fd,
169 uint32_t *major_version,
170 uint32_t *minor_version,
171 amdgpu_device_handle *device_handle)
173 struct amdgpu_device *dev;
174 drmVersionPtr version;
177 int flag_authexist=0;
178 uint32_t accel_working = 0;
181 *device_handle = NULL;
183 pthread_mutex_lock(&fd_mutex);
185 fd_tab = util_hash_table_create(fd_hash, fd_compare);
186 r = amdgpu_get_auth(fd, &flag_auth);
188 fprintf(stderr, "%s: amdgpu_get_auth (1) failed (%i)\n",
190 pthread_mutex_unlock(&fd_mutex);
193 dev = util_hash_table_get(fd_tab, UINT_TO_PTR(fd));
195 r = amdgpu_get_auth(dev->fd, &flag_authexist);
197 fprintf(stderr, "%s: amdgpu_get_auth (2) failed (%i)\n",
199 pthread_mutex_unlock(&fd_mutex);
202 if ((flag_auth) && (!flag_authexist)) {
203 dev->flink_fd = dup(fd);
205 *major_version = dev->major_version;
206 *minor_version = dev->minor_version;
207 amdgpu_device_reference(device_handle, dev);
208 pthread_mutex_unlock(&fd_mutex);
212 dev = calloc(1, sizeof(struct amdgpu_device));
214 fprintf(stderr, "%s: calloc failed\n", __func__);
215 pthread_mutex_unlock(&fd_mutex);
222 atomic_set(&dev->refcount, 1);
224 version = drmGetVersion(fd);
225 if (version->version_major != 3) {
226 fprintf(stderr, "%s: DRM version is %d.%d.%d but this driver is "
227 "only compatible with 3.x.x.\n",
229 version->version_major,
230 version->version_minor,
231 version->version_patchlevel);
232 drmFreeVersion(version);
238 dev->flink_fd = dev->fd;
239 dev->major_version = version->version_major;
240 dev->minor_version = version->version_minor;
241 drmFreeVersion(version);
243 dev->bo_flink_names = util_hash_table_create(handle_hash,
245 dev->bo_handles = util_hash_table_create(handle_hash, handle_compare);
246 pthread_mutex_init(&dev->bo_table_mutex, NULL);
248 /* Check if acceleration is working. */
249 r = amdgpu_query_info(dev, AMDGPU_INFO_ACCEL_WORKING, 4, &accel_working);
251 fprintf(stderr, "%s: amdgpu_query_info(ACCEL_WORKING) failed (%i)\n",
255 if (!accel_working) {
256 fprintf(stderr, "%s: AMDGPU_INFO_ACCEL_WORKING = 0\n", __func__);
261 r = amdgpu_query_gpu_info_init(dev);
263 fprintf(stderr, "%s: amdgpu_query_gpu_info_init failed\n", __func__);
267 if (dev->dev_info.high_va_offset && dev->dev_info.high_va_max) {
268 start = dev->dev_info.high_va_offset;
269 max = dev->dev_info.high_va_max;
271 start = dev->dev_info.virtual_address_offset;
272 max = dev->dev_info.virtual_address_max;
275 max = MIN2(max, (start & ~0xffffffff) + 0x100000000ULL);
276 amdgpu_vamgr_init(&dev->vamgr_32, start, max,
277 dev->dev_info.virtual_address_alignment);
280 if (dev->dev_info.high_va_offset && dev->dev_info.high_va_max)
281 max = dev->dev_info.high_va_max;
283 max = dev->dev_info.virtual_address_max;
284 amdgpu_vamgr_init(&dev->vamgr, start, max,
285 dev->dev_info.virtual_address_alignment);
287 amdgpu_parse_asic_ids(dev);
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 return dev->marketing_name;