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IABSD.fr/xenocara/lib/libdrm/amdgpu/amdgpu_device.c
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- lib/libdrm/amdgpu/amdgpu_device.c
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/* * Copyright 2014 Advanced Micro Devices, Inc. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * */ /** * \file amdgpu_device.c * * Implementation of functions for AMD GPU device * */ #include <sys/stat.h> #include <errno.h> #include <string.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <fcntl.h> #include "xf86drm.h" #include "amdgpu_drm.h" #include "amdgpu_internal.h" #include "util_math.h" #define PTR_TO_UINT(x) ((unsigned)((intptr_t)(x))) static pthread_mutex_t dev_mutex = PTHREAD_MUTEX_INITIALIZER; static amdgpu_device_handle dev_list; static int fd_compare(int fd1, int fd2) { char *name1 = drmGetPrimaryDeviceNameFromFd(fd1); char *name2 = drmGetPrimaryDeviceNameFromFd(fd2); int result; if (name1 == NULL || name2 == NULL) { free(name1); free(name2); return 0; } result = strcmp(name1, name2); free(name1); free(name2); return result; } /** * Get the authenticated form fd, * * \param fd - \c [in] File descriptor for AMD GPU device * \param auth - \c [out] Pointer to output the fd is authenticated or not * A render node fd, output auth = 0 * A legacy fd, get the authenticated for compatibility root * * \return 0 on success\n * >0 - AMD specific error code\n * <0 - Negative POSIX Error code */ static int amdgpu_get_auth(int fd, int *auth) { int r = 0; drm_client_t client = {}; if (drmGetNodeTypeFromFd(fd) == DRM_NODE_RENDER) *auth = 0; else { client.idx = 0; r = drmIoctl(fd, DRM_IOCTL_GET_CLIENT, &client); if (!r) *auth = client.auth; } return r; } static void amdgpu_device_free_internal(amdgpu_device_handle dev) { amdgpu_device_handle *node = &dev_list; pthread_mutex_lock(&dev_mutex); while (*node != dev && (*node)->next) node = &(*node)->next; *node = (*node)->next; pthread_mutex_unlock(&dev_mutex); close(dev->fd); if ((dev->flink_fd >= 0) && (dev->fd != dev->flink_fd)) close(dev->flink_fd); amdgpu_vamgr_deinit(&dev->vamgr_32); amdgpu_vamgr_deinit(&dev->vamgr); amdgpu_vamgr_deinit(&dev->vamgr_high_32); amdgpu_vamgr_deinit(&dev->vamgr_high); handle_table_fini(&dev->bo_handles); handle_table_fini(&dev->bo_flink_names); pthread_mutex_destroy(&dev->bo_table_mutex); free(dev->marketing_name); free(dev); } /** * Assignment between two amdgpu_device pointers with reference counting. * * Usage: * struct amdgpu_device *dst = ... , *src = ...; * * dst = src; * // No reference counting. Only use this when you need to move * // a reference from one pointer to another. * * amdgpu_device_reference(&dst, src); * // Reference counters are updated. dst is decremented and src is * // incremented. dst is freed if its reference counter is 0. */ static void amdgpu_device_reference(struct amdgpu_device **dst, struct amdgpu_device *src) { if (update_references(&(*dst)->refcount, &src->refcount)) amdgpu_device_free_internal(*dst); *dst = src; } drm_public int amdgpu_device_initialize(int fd, uint32_t *major_version, uint32_t *minor_version, amdgpu_device_handle *device_handle) { struct amdgpu_device *dev; drmVersionPtr version; int r; int flag_auth = 0; int flag_authexist=0; uint32_t accel_working = 0; uint64_t start, max; *device_handle = NULL; pthread_mutex_lock(&dev_mutex); r = amdgpu_get_auth(fd, &flag_auth); if (r) { fprintf(stderr, "%s: amdgpu_get_auth (1) failed (%i)\n", __func__, r); pthread_mutex_unlock(&dev_mutex); return r; } for (dev = dev_list; dev; dev = dev->next) if (fd_compare(dev->fd, fd) == 0) break; if (dev) { r = amdgpu_get_auth(dev->fd, &flag_authexist); if (r) { fprintf(stderr, "%s: amdgpu_get_auth (2) failed (%i)\n", __func__, r); pthread_mutex_unlock(&dev_mutex); return r; } if ((flag_auth) && (!flag_authexist)) { dev->flink_fd = fcntl(fd, F_DUPFD_CLOEXEC, 0); } *major_version = dev->major_version; *minor_version = dev->minor_version; amdgpu_device_reference(device_handle, dev); pthread_mutex_unlock(&dev_mutex); return 0; } dev = calloc(1, sizeof(struct amdgpu_device)); if (!dev) { fprintf(stderr, "%s: calloc failed\n", __func__); pthread_mutex_unlock(&dev_mutex); return -ENOMEM; } dev->fd = -1; dev->flink_fd = -1; atomic_set(&dev->refcount, 1); version = drmGetVersion(fd); if (version->version_major != 3) { fprintf(stderr, "%s: DRM version is %d.%d.%d but this driver is " "only compatible with 3.x.x.\n", __func__, version->version_major, version->version_minor, version->version_patchlevel); drmFreeVersion(version); r = -EBADF; goto cleanup; } dev->fd = fcntl(fd, F_DUPFD_CLOEXEC, 0); dev->flink_fd = dev->fd; dev->major_version = version->version_major; dev->minor_version = version->version_minor; drmFreeVersion(version); pthread_mutex_init(&dev->bo_table_mutex, NULL); /* Check if acceleration is working. */ r = amdgpu_query_info(dev, AMDGPU_INFO_ACCEL_WORKING, 4, &accel_working); if (r) { fprintf(stderr, "%s: amdgpu_query_info(ACCEL_WORKING) failed (%i)\n", __func__, r); goto cleanup; } if (!accel_working) { fprintf(stderr, "%s: AMDGPU_INFO_ACCEL_WORKING = 0\n", __func__); r = -EBADF; goto cleanup; } r = amdgpu_query_gpu_info_init(dev); if (r) { fprintf(stderr, "%s: amdgpu_query_gpu_info_init failed\n", __func__); goto cleanup; } start = dev->dev_info.virtual_address_offset; max = MIN2(dev->dev_info.virtual_address_max, 0x100000000ULL); amdgpu_vamgr_init(&dev->vamgr_32, start, max, dev->dev_info.virtual_address_alignment); start = max; max = MAX2(dev->dev_info.virtual_address_max, 0x100000000ULL); amdgpu_vamgr_init(&dev->vamgr, start, max, dev->dev_info.virtual_address_alignment); start = dev->dev_info.high_va_offset; max = MIN2(dev->dev_info.high_va_max, (start & ~0xffffffffULL) + 0x100000000ULL); amdgpu_vamgr_init(&dev->vamgr_high_32, start, max, dev->dev_info.virtual_address_alignment); start = max; max = MAX2(dev->dev_info.high_va_max, (start & ~0xffffffffULL) + 0x100000000ULL); amdgpu_vamgr_init(&dev->vamgr_high, start, max, dev->dev_info.virtual_address_alignment); amdgpu_parse_asic_ids(dev); *major_version = dev->major_version; *minor_version = dev->minor_version; *device_handle = dev; dev->next = dev_list; dev_list = dev; pthread_mutex_unlock(&dev_mutex); return 0; cleanup: if (dev->fd >= 0) close(dev->fd); free(dev); pthread_mutex_unlock(&dev_mutex); return r; } drm_public int amdgpu_device_deinitialize(amdgpu_device_handle dev) { amdgpu_device_reference(&dev, NULL); return 0; } drm_public int amdgpu_device_get_fd(amdgpu_device_handle device_handle) { return device_handle->fd; } drm_public const char *amdgpu_get_marketing_name(amdgpu_device_handle dev) { return dev->marketing_name; } drm_public int amdgpu_query_sw_info(amdgpu_device_handle dev, enum amdgpu_sw_info info, void *value) { uint32_t *val32 = (uint32_t*)value; switch (info) { case amdgpu_sw_info_address32_hi: if (dev->vamgr_high_32.va_max) *val32 = (dev->vamgr_high_32.va_max - 1) >> 32; else *val32 = (dev->vamgr_32.va_max - 1) >> 32; return 0; } return -EINVAL; }