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1/*2 * Copyright 2015 Red Hat Inc.3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice shall be included in12 * all copies or substantial portions of the Software.13 *14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR18 * 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 OR20 * OTHER DEALINGS IN THE SOFTWARE.21 *22 * Authors: Ben Skeggs <bskeggs@redhat.com>23 */24#include "priv.h"25#include "chan.h"26 27#include <engine/fifo.h>28 29bool30nvkm_sw_mthd(struct nvkm_sw *sw, int chid, int subc, u32 mthd, u32 data)31{32 struct nvkm_sw_chan *chan;33 bool handled = false;34 unsigned long flags;35 36 spin_lock_irqsave(&sw->engine.lock, flags);37 list_for_each_entry(chan, &sw->chan, head) {38 if (chan->fifo->id == chid) {39 handled = nvkm_sw_chan_mthd(chan, subc, mthd, data);40 list_del(&chan->head);41 list_add(&chan->head, &sw->chan);42 break;43 }44 }45 spin_unlock_irqrestore(&sw->engine.lock, flags);46 return handled;47}48 49static int50nvkm_sw_oclass_new(const struct nvkm_oclass *oclass, void *data, u32 size,51 struct nvkm_object **pobject)52{53 struct nvkm_sw_chan *chan = nvkm_sw_chan(oclass->parent);54 const struct nvkm_sw_chan_sclass *sclass = oclass->engn;55 return sclass->ctor(chan, oclass, data, size, pobject);56}57 58static int59nvkm_sw_oclass_get(struct nvkm_oclass *oclass, int index)60{61 struct nvkm_sw *sw = nvkm_sw(oclass->engine);62 int c = 0;63 64 while (sw->func->sclass[c].ctor) {65 if (c++ == index) {66 oclass->engn = &sw->func->sclass[index];67 oclass->base = sw->func->sclass[index].base;68 oclass->base.ctor = nvkm_sw_oclass_new;69 return index;70 }71 }72 73 return c;74}75 76static int77nvkm_sw_cclass_get(struct nvkm_chan *fifoch, const struct nvkm_oclass *oclass,78 struct nvkm_object **pobject)79{80 struct nvkm_sw *sw = nvkm_sw(oclass->engine);81 return sw->func->chan_new(sw, fifoch, oclass, pobject);82}83 84static void *85nvkm_sw_dtor(struct nvkm_engine *engine)86{87 return nvkm_sw(engine);88}89 90static const struct nvkm_engine_func91nvkm_sw = {92 .dtor = nvkm_sw_dtor,93 .fifo.cclass = nvkm_sw_cclass_get,94 .fifo.sclass = nvkm_sw_oclass_get,95};96 97int98nvkm_sw_new_(const struct nvkm_sw_func *func, struct nvkm_device *device,99 enum nvkm_subdev_type type, int inst, struct nvkm_sw **psw)100{101 struct nvkm_sw *sw;102 103 if (!(sw = *psw = kzalloc(sizeof(*sw), GFP_KERNEL)))104 return -ENOMEM;105 INIT_LIST_HEAD(&sw->chan);106 sw->func = func;107 108 return nvkm_engine_ctor(&nvkm_sw, device, type, inst, true, &sw->engine);109}110