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Diffstat (limited to 'nouveau/nouveau_notifier.c')
-rw-r--r--nouveau/nouveau_notifier.c146
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;
+}
+