diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/engine/sw/chan.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/engine/sw/chan.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/sw/chan.c b/drivers/gpu/drm/nouveau/nvkm/engine/sw/chan.c new file mode 100644 index 0000000000..2bf45141de --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/engine/sw/chan.c @@ -0,0 +1,91 @@ +/* + * Copyright 2015 Red Hat Inc. + * + * 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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. + * + * Authors: Ben Skeggs <bskeggs@redhat.com> + */ +#include "chan.h" + +#include <engine/fifo.h> + +#include <nvif/event.h> +#include <nvif/unpack.h> + +bool +nvkm_sw_chan_mthd(struct nvkm_sw_chan *chan, int subc, u32 mthd, u32 data) +{ + switch (mthd) { + case 0x0000: + return true; + case 0x0500: + nvkm_event_ntfy(&chan->event, 0, NVKM_SW_CHAN_EVENT_PAGE_FLIP); + return true; + default: + if (chan->func->mthd) + return chan->func->mthd(chan, subc, mthd, data); + break; + } + return false; +} + +static const struct nvkm_event_func +nvkm_sw_chan_event = { +}; + +static void * +nvkm_sw_chan_dtor(struct nvkm_object *object) +{ + struct nvkm_sw_chan *chan = nvkm_sw_chan(object); + struct nvkm_sw *sw = chan->sw; + unsigned long flags; + void *data = chan; + + if (chan->func->dtor) + data = chan->func->dtor(chan); + nvkm_event_fini(&chan->event); + + spin_lock_irqsave(&sw->engine.lock, flags); + list_del(&chan->head); + spin_unlock_irqrestore(&sw->engine.lock, flags); + return data; +} + +static const struct nvkm_object_func +nvkm_sw_chan = { + .dtor = nvkm_sw_chan_dtor, +}; + +int +nvkm_sw_chan_ctor(const struct nvkm_sw_chan_func *func, struct nvkm_sw *sw, + struct nvkm_chan *fifo, const struct nvkm_oclass *oclass, + struct nvkm_sw_chan *chan) +{ + unsigned long flags; + + nvkm_object_ctor(&nvkm_sw_chan, oclass, &chan->object); + chan->func = func; + chan->sw = sw; + chan->fifo = fifo; + spin_lock_irqsave(&sw->engine.lock, flags); + list_add(&chan->head, &sw->chan); + spin_unlock_irqrestore(&sw->engine.lock, flags); + + return nvkm_event_init(&nvkm_sw_chan_event, &sw->engine.subdev, 1, 1, &chan->event); +} |