blob: 362494b16ba6bb4cb8ac6f633b93c3d2bb9eaf5a [file] [log] [blame]
/*
* 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 fd_mutex = PTHREAD_MUTEX_INITIALIZER;
static amdgpu_device_handle fd_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 = &fd_list;
pthread_mutex_lock(&fd_mutex);
while (*node != dev && (*node)->next)
node = &(*node)->next;
*node = (*node)->next;
pthread_mutex_unlock(&fd_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(&fd_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(&fd_mutex);
return r;
}
for (dev = fd_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(&fd_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(&fd_mutex);
return 0;
}
dev = calloc(1, sizeof(struct amdgpu_device));
if (!dev) {
fprintf(stderr, "%s: calloc failed\n", __func__);
pthread_mutex_unlock(&fd_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 = fd_list;
fd_list = dev;
pthread_mutex_unlock(&fd_mutex);
return 0;
cleanup:
if (dev->fd >= 0)
close(dev->fd);
free(dev);
pthread_mutex_unlock(&fd_mutex);
return r;
}
drm_public int amdgpu_device_deinitialize(amdgpu_device_handle dev)
{
amdgpu_device_reference(&dev, NULL);
return 0;
}
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;
}