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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 <stdlib.h>
#include <errno.h>
#include <sys/time.h>
#include "nouveau_private.h"
#define NOTIFIER(__v) \
struct nouveau_notifier_priv *nvnotify = nouveau_notifier(notifier); \
volatile uint32_t *__v = (uint32_t *)((char *)nvnotify->map + (id * 32))
int
nouveau_notifier_alloc(struct nouveau_channel *chan, uint32_t handle,
int count, struct nouveau_notifier **notifier)
{
struct nouveau_notifier_priv *nvnotify;
int ret;
if (!chan || !notifier || *notifier)
return -EINVAL;
nvnotify = calloc(1, sizeof(struct nouveau_notifier_priv));
if (!nvnotify)
return -ENOMEM;
nvnotify->base.channel = chan;
nvnotify->base.handle = handle;
nvnotify->drm.channel = chan->id;
nvnotify->drm.handle = handle;
nvnotify->drm.count = count;
if ((ret = drmCommandWriteRead(nouveau_device(chan->device)->fd,
DRM_NOUVEAU_NOTIFIEROBJ_ALLOC,
&nvnotify->drm,
sizeof(nvnotify->drm)))) {
nouveau_notifier_free((void *)&nvnotify);
return ret;
}
nvnotify->map = (char *)nouveau_channel(chan)->notifier_block +
nvnotify->drm.offset;
*notifier = &nvnotify->base;
return 0;
}
void
nouveau_notifier_free(struct nouveau_notifier **notifier)
{
struct nouveau_notifier_priv *nvnotify;
struct nouveau_channel_priv *nvchan;
struct nouveau_device_priv *nvdev;
struct drm_nouveau_gpuobj_free f;
if (!notifier || !*notifier)
return;
nvnotify = nouveau_notifier(*notifier);
*notifier = NULL;
nvchan = nouveau_channel(nvnotify->base.channel);
nvdev = nouveau_device(nvchan->base.device);
f.channel = nvchan->drm.channel;
f.handle = nvnotify->base.handle;
drmCommandWrite(nvdev->fd, DRM_NOUVEAU_GPUOBJ_FREE, &f, sizeof(f));
free(nvnotify);
}
void
nouveau_notifier_reset(struct nouveau_notifier *notifier, int id)
{
NOTIFIER(n);
n[NV_NOTIFY_TIME_0 /4] = 0x00000000;
n[NV_NOTIFY_TIME_1 /4] = 0x00000000;
n[NV_NOTIFY_RETURN_VALUE/4] = 0x00000000;
n[NV_NOTIFY_STATE /4] = (NV_NOTIFY_STATE_STATUS_IN_PROCESS <<
NV_NOTIFY_STATE_STATUS_SHIFT);
}
uint32_t
nouveau_notifier_status(struct nouveau_notifier *notifier, int id)
{
NOTIFIER(n);
return n[NV_NOTIFY_STATE/4] >> NV_NOTIFY_STATE_STATUS_SHIFT;
}
uint32_t
nouveau_notifier_return_val(struct nouveau_notifier *notifier, int id)
{
NOTIFIER(n);
return n[NV_NOTIFY_RETURN_VALUE/4];
}
static inline double
gettime(void)
{
struct timeval tv;
gettimeofday(&tv, NULL);
return (double)tv.tv_sec + tv.tv_usec / 1000000.0;
}
int
nouveau_notifier_wait_status(struct nouveau_notifier *notifier, int id,
uint32_t status, double timeout)
{
NOTIFIER(n);
double time = 0, t_start = gettime();
while (time <= timeout) {
uint32_t v;
v = n[NV_NOTIFY_STATE/4] >> NV_NOTIFY_STATE_STATUS_SHIFT;
if (v == status)
return 0;
if (timeout)
time = gettime() - t_start;
}
return -EBUSY;
}
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