111 lines
3.1 KiB
C
111 lines
3.1 KiB
C
/*
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* Copyright 2015 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Ben Skeggs <bskeggs@redhat.com>
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*/
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#include "priv.h"
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#include "chan.h"
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#include <engine/fifo.h>
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bool
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nvkm_sw_mthd(struct nvkm_sw *sw, int chid, int subc, u32 mthd, u32 data)
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{
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struct nvkm_sw_chan *chan;
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bool handled = false;
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unsigned long flags;
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spin_lock_irqsave(&sw->engine.lock, flags);
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list_for_each_entry(chan, &sw->chan, head) {
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if (chan->fifo->id == chid) {
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handled = nvkm_sw_chan_mthd(chan, subc, mthd, data);
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list_del(&chan->head);
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list_add(&chan->head, &sw->chan);
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break;
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}
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}
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spin_unlock_irqrestore(&sw->engine.lock, flags);
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return handled;
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}
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static int
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nvkm_sw_oclass_new(const struct nvkm_oclass *oclass, void *data, u32 size,
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struct nvkm_object **pobject)
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{
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struct nvkm_sw_chan *chan = nvkm_sw_chan(oclass->parent);
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const struct nvkm_sw_chan_sclass *sclass = oclass->engn;
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return sclass->ctor(chan, oclass, data, size, pobject);
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}
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static int
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nvkm_sw_oclass_get(struct nvkm_oclass *oclass, int index)
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{
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struct nvkm_sw *sw = nvkm_sw(oclass->engine);
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int c = 0;
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while (sw->func->sclass[c].ctor) {
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if (c++ == index) {
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oclass->engn = &sw->func->sclass[index];
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oclass->base = sw->func->sclass[index].base;
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oclass->base.ctor = nvkm_sw_oclass_new;
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return index;
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}
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}
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return c;
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}
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static int
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nvkm_sw_cclass_get(struct nvkm_fifo_chan *fifoch,
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const struct nvkm_oclass *oclass,
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struct nvkm_object **pobject)
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{
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struct nvkm_sw *sw = nvkm_sw(oclass->engine);
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return sw->func->chan_new(sw, fifoch, oclass, pobject);
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}
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static void *
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nvkm_sw_dtor(struct nvkm_engine *engine)
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{
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return nvkm_sw(engine);
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}
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static const struct nvkm_engine_func
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nvkm_sw = {
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.dtor = nvkm_sw_dtor,
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.fifo.cclass = nvkm_sw_cclass_get,
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.fifo.sclass = nvkm_sw_oclass_get,
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};
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int
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nvkm_sw_new_(const struct nvkm_sw_func *func, struct nvkm_device *device,
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enum nvkm_subdev_type type, int inst, struct nvkm_sw **psw)
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{
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struct nvkm_sw *sw;
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if (!(sw = *psw = kzalloc(sizeof(*sw), GFP_KERNEL)))
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return -ENOMEM;
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INIT_LIST_HEAD(&sw->chan);
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sw->func = func;
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return nvkm_engine_ctor(&nvkm_sw, device, type, inst, true, &sw->engine);
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}
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