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/*
* Copyright 2007 Nouveau Project
*
* 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 AUTHORS 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.
*/
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include "nouveau_private.h"
#if NOUVEAU_DRM_HEADER_PATCHLEVEL != 12
#error nouveau_drm.h does not match expected patchlevel, update libdrm.
#endif
int
nouveau_device_open_existing(struct nouveau_device **dev, int close,
int fd, drm_context_t ctx)
{
struct nouveau_device_priv *nvdev;
drmVersionPtr ver;
uint64_t value;
int ret;
if (!dev || *dev)
return -EINVAL;
ver = drmGetVersion(fd);
if (!ver || ver->version_patchlevel != NOUVEAU_DRM_HEADER_PATCHLEVEL)
return -EINVAL;
drmFreeVersion(ver);
nvdev = calloc(1, sizeof(*nvdev));
if (!nvdev)
return -ENOMEM;
nvdev->fd = fd;
nvdev->ctx = ctx;
nvdev->needs_close = close;
ret = drmCommandNone(nvdev->fd, DRM_NOUVEAU_CARD_INIT);
if (ret) {
nouveau_device_close((void *)&nvdev);
return ret;
}
ret = nouveau_device_get_param(&nvdev->base,
NOUVEAU_GETPARAM_MM_ENABLED, &value);
if (ret) {
nouveau_device_close((void *)&nvdev);
return ret;
}
nvdev->mm_enabled = value;
ret = nouveau_device_get_param(&nvdev->base,
NOUVEAU_GETPARAM_VM_VRAM_BASE, &value);
if (ret) {
nouveau_device_close((void *)&nvdev);
return ret;
}
nvdev->base.vm_vram_base = value;
ret = nouveau_bo_init(&nvdev->base);
if (ret) {
nouveau_device_close((void *)&nvdev);
return ret;
}
ret = nouveau_device_get_param(&nvdev->base,
NOUVEAU_GETPARAM_CHIPSET_ID, &value);
if (ret) {
nouveau_device_close((void *)&nvdev);
return ret;
}
nvdev->base.chipset = value;
*dev = &nvdev->base;
return 0;
}
int
nouveau_device_open(struct nouveau_device **dev, const char *busid)
{
drm_context_t ctx;
int fd, ret;
if (!dev || *dev)
return -EINVAL;
fd = drmOpen("nouveau", busid);
if (fd < 0)
return -EINVAL;
ret = drmCreateContext(fd, &ctx);
if (ret) {
drmClose(fd);
return ret;
}
ret = nouveau_device_open_existing(dev, 1, fd, ctx);
if (ret) {
drmDestroyContext(fd, ctx);
drmClose(fd);
return ret;
}
return 0;
}
void
nouveau_device_close(struct nouveau_device **dev)
{
struct nouveau_device_priv *nvdev;
if (dev || !*dev)
return;
nvdev = nouveau_device(*dev);
*dev = NULL;
nouveau_bo_takedown(&nvdev->base);
if (nvdev->needs_close) {
drmDestroyContext(nvdev->fd, nvdev->ctx);
drmClose(nvdev->fd);
}
free(nvdev);
}
int
nouveau_device_get_param(struct nouveau_device *dev,
uint64_t param, uint64_t *value)
{
struct nouveau_device_priv *nvdev = nouveau_device(dev);
struct drm_nouveau_getparam g;
int ret;
if (!nvdev || !value)
return -EINVAL;
g.param = param;
ret = drmCommandWriteRead(nvdev->fd, DRM_NOUVEAU_GETPARAM,
&g, sizeof(g));
if (ret)
return ret;
*value = g.value;
return 0;
}
int
nouveau_device_set_param(struct nouveau_device *dev,
uint64_t param, uint64_t value)
{
struct nouveau_device_priv *nvdev = nouveau_device(dev);
struct drm_nouveau_setparam s;
int ret;
if (!nvdev)
return -EINVAL;
s.param = param;
s.value = value;
ret = drmCommandWriteRead(nvdev->fd, DRM_NOUVEAU_SETPARAM,
&s, sizeof(s));
if (ret)
return ret;
return 0;
}
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