1 /* 2 * Copyright 2015 Red Hat Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: Ben Skeggs <bskeggs@redhat.com> 23 */ 24 #include "chan.h" 25 26 #include <engine/fifo.h> 27 28 #include <nvif/event.h> 29 #include <nvif/unpack.h> 30 31 bool 32 nvkm_sw_chan_mthd(struct nvkm_sw_chan *chan, int subc, u32 mthd, u32 data) 33 { 34 switch (mthd) { 35 case 0x0000: 36 return true; 37 case 0x0500: 38 nvkm_event_ntfy(&chan->event, 0, NVKM_SW_CHAN_EVENT_PAGE_FLIP); 39 return true; 40 default: 41 if (chan->func->mthd) 42 return chan->func->mthd(chan, subc, mthd, data); 43 break; 44 } 45 return false; 46 } 47 48 static const struct nvkm_event_func 49 nvkm_sw_chan_event = { 50 }; 51 52 static void * 53 nvkm_sw_chan_dtor(struct nvkm_object *object) 54 { 55 struct nvkm_sw_chan *chan = nvkm_sw_chan(object); 56 struct nvkm_sw *sw = chan->sw; 57 unsigned long flags; 58 void *data = chan; 59 60 if (chan->func->dtor) 61 data = chan->func->dtor(chan); 62 nvkm_event_fini(&chan->event); 63 64 spin_lock_irqsave(&sw->engine.lock, flags); 65 list_del(&chan->head); 66 spin_unlock_irqrestore(&sw->engine.lock, flags); 67 return data; 68 } 69 70 static const struct nvkm_object_func 71 nvkm_sw_chan = { 72 .dtor = nvkm_sw_chan_dtor, 73 }; 74 75 int 76 nvkm_sw_chan_ctor(const struct nvkm_sw_chan_func *func, struct nvkm_sw *sw, 77 struct nvkm_fifo_chan *fifo, const struct nvkm_oclass *oclass, 78 struct nvkm_sw_chan *chan) 79 { 80 unsigned long flags; 81 82 nvkm_object_ctor(&nvkm_sw_chan, oclass, &chan->object); 83 chan->func = func; 84 chan->sw = sw; 85 chan->fifo = fifo; 86 spin_lock_irqsave(&sw->engine.lock, flags); 87 list_add(&chan->head, &sw->chan); 88 spin_unlock_irqrestore(&sw->engine.lock, flags); 89 90 return nvkm_event_init(&nvkm_sw_chan_event, &sw->engine.subdev, 1, 1, &chan->event); 91 } 92