147 lines
3.9 KiB
C
147 lines
3.9 KiB
C
/*
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* Copyright 2007 Nouveau Project
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
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* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <stdlib.h>
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#include <errno.h>
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#include <sys/time.h>
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#include "nouveau_private.h"
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#define NOTIFIER(__v) \
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struct nouveau_notifier_priv *nvnotify = nouveau_notifier(notifier); \
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volatile uint32_t *__v = (uint32_t *)((char *)nvnotify->map + (id * 32))
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int
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nouveau_notifier_alloc(struct nouveau_channel *chan, uint32_t handle,
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int count, struct nouveau_notifier **notifier)
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{
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struct nouveau_notifier_priv *nvnotify;
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int ret;
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if (!chan || !notifier || *notifier)
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return -EINVAL;
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nvnotify = calloc(1, sizeof(struct nouveau_notifier_priv));
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if (!nvnotify)
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return -ENOMEM;
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nvnotify->base.channel = chan;
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nvnotify->base.handle = handle;
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nvnotify->drm.channel = chan->id;
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nvnotify->drm.handle = handle;
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nvnotify->drm.size = (count * 32);
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if ((ret = drmCommandWriteRead(nouveau_device(chan->device)->fd,
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DRM_NOUVEAU_NOTIFIEROBJ_ALLOC,
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&nvnotify->drm,
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sizeof(nvnotify->drm)))) {
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nouveau_notifier_free((void *)&nvnotify);
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return ret;
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}
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nvnotify->map = (char *)nouveau_channel(chan)->notifier_bo->map +
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nvnotify->drm.offset;
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*notifier = &nvnotify->base;
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return 0;
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}
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void
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nouveau_notifier_free(struct nouveau_notifier **notifier)
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{
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struct nouveau_notifier_priv *nvnotify;
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struct nouveau_channel_priv *nvchan;
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struct nouveau_device_priv *nvdev;
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struct drm_nouveau_gpuobj_free f;
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if (!notifier || !*notifier)
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return;
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nvnotify = nouveau_notifier(*notifier);
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*notifier = NULL;
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nvchan = nouveau_channel(nvnotify->base.channel);
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nvdev = nouveau_device(nvchan->base.device);
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f.channel = nvchan->drm.channel;
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f.handle = nvnotify->base.handle;
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drmCommandWrite(nvdev->fd, DRM_NOUVEAU_GPUOBJ_FREE, &f, sizeof(f));
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free(nvnotify);
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}
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void
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nouveau_notifier_reset(struct nouveau_notifier *notifier, int id)
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{
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NOTIFIER(n);
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n[NV_NOTIFY_TIME_0 /4] = 0x00000000;
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n[NV_NOTIFY_TIME_1 /4] = 0x00000000;
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n[NV_NOTIFY_RETURN_VALUE/4] = 0x00000000;
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n[NV_NOTIFY_STATE /4] = (NV_NOTIFY_STATE_STATUS_IN_PROCESS <<
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NV_NOTIFY_STATE_STATUS_SHIFT);
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}
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uint32_t
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nouveau_notifier_status(struct nouveau_notifier *notifier, int id)
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{
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NOTIFIER(n);
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return n[NV_NOTIFY_STATE/4] >> NV_NOTIFY_STATE_STATUS_SHIFT;
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}
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uint32_t
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nouveau_notifier_return_val(struct nouveau_notifier *notifier, int id)
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{
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NOTIFIER(n);
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return n[NV_NOTIFY_RETURN_VALUE/4];
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}
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static inline double
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gettime(void)
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{
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struct timeval tv;
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gettimeofday(&tv, NULL);
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return (double)tv.tv_sec + tv.tv_usec / 1000000.0;
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}
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int
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nouveau_notifier_wait_status(struct nouveau_notifier *notifier, int id,
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uint32_t status, double timeout)
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{
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NOTIFIER(n);
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double time = 0, t_start = gettime();
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while (time <= timeout) {
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uint32_t v;
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v = n[NV_NOTIFY_STATE/4] >> NV_NOTIFY_STATE_STATUS_SHIFT;
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if (v == status)
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return 0;
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if (timeout)
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time = gettime() - t_start;
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}
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return -EBUSY;
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}
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