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 "priv.h" 25 #include "chan.h" 26 27 #include <engine/fifo.h> 28 29 bool 30 nvkm_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 49 static int 50 nvkm_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 58 static int 59 nvkm_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 76 static int 77 nvkm_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 84 static void * 85 nvkm_sw_dtor(struct nvkm_engine *engine) 86 { 87 return nvkm_sw(engine); 88 } 89 90 static const struct nvkm_engine_func 91 nvkm_sw = { 92 .dtor = nvkm_sw_dtor, 93 .fifo.cclass = nvkm_sw_cclass_get, 94 .fifo.sclass = nvkm_sw_oclass_get, 95 }; 96 97 int 98 nvkm_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