| /* |
| * 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 "priv.h" |
| #include "chan.h" |
| |
| #include <engine/fifo.h> |
| |
| bool |
| nvkm_sw_mthd(struct nvkm_sw *sw, int chid, int subc, u32 mthd, u32 data) |
| { |
| struct nvkm_sw_chan *chan; |
| bool handled = false; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&sw->engine.lock, flags); |
| list_for_each_entry(chan, &sw->chan, head) { |
| if (chan->fifo->chid == chid) { |
| handled = nvkm_sw_chan_mthd(chan, subc, mthd, data); |
| list_del(&chan->head); |
| list_add(&chan->head, &sw->chan); |
| break; |
| } |
| } |
| spin_unlock_irqrestore(&sw->engine.lock, flags); |
| return handled; |
| } |
| |
| static int |
| nvkm_sw_oclass_new(const struct nvkm_oclass *oclass, void *data, u32 size, |
| struct nvkm_object **pobject) |
| { |
| struct nvkm_sw_chan *chan = nvkm_sw_chan(oclass->parent); |
| const struct nvkm_sw_chan_sclass *sclass = oclass->engn; |
| return sclass->ctor(chan, oclass, data, size, pobject); |
| } |
| |
| static int |
| nvkm_sw_oclass_get(struct nvkm_oclass *oclass, int index) |
| { |
| struct nvkm_sw *sw = nvkm_sw(oclass->engine); |
| int c = 0; |
| |
| while (sw->func->sclass[c].ctor) { |
| if (c++ == index) { |
| oclass->engn = &sw->func->sclass[index]; |
| oclass->base = sw->func->sclass[index].base; |
| oclass->base.ctor = nvkm_sw_oclass_new; |
| return index; |
| } |
| } |
| |
| return c; |
| } |
| |
| static int |
| nvkm_sw_cclass_get(struct nvkm_fifo_chan *fifoch, |
| const struct nvkm_oclass *oclass, |
| struct nvkm_object **pobject) |
| { |
| struct nvkm_sw *sw = nvkm_sw(oclass->engine); |
| return sw->func->chan_new(sw, fifoch, oclass, pobject); |
| } |
| |
| static void * |
| nvkm_sw_dtor(struct nvkm_engine *engine) |
| { |
| return nvkm_sw(engine); |
| } |
| |
| static const struct nvkm_engine_func |
| nvkm_sw = { |
| .dtor = nvkm_sw_dtor, |
| .fifo.cclass = nvkm_sw_cclass_get, |
| .fifo.sclass = nvkm_sw_oclass_get, |
| }; |
| |
| int |
| nvkm_sw_new_(const struct nvkm_sw_func *func, struct nvkm_device *device, |
| enum nvkm_subdev_type type, int inst, struct nvkm_sw **psw) |
| { |
| struct nvkm_sw *sw; |
| |
| if (!(sw = *psw = kzalloc(sizeof(*sw), GFP_KERNEL))) |
| return -ENOMEM; |
| INIT_LIST_HEAD(&sw->chan); |
| sw->func = func; |
| |
| return nvkm_engine_ctor(&nvkm_sw, device, type, inst, true, &sw->engine); |
| } |