diff options
Diffstat (limited to 'nouveau/nouveau_notifier.c')
| -rw-r--r-- | nouveau/nouveau_notifier.c | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/nouveau/nouveau_notifier.c b/nouveau/nouveau_notifier.c new file mode 100644 index 00000000..f8cfd8b9 --- /dev/null +++ b/nouveau/nouveau_notifier.c @@ -0,0 +1,146 @@ +/* + * 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.size = (count * 32); + 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_bo->map + + 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; +} + |