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 "nvsw.h" 25 #include "chan.h" 26 27 #include <nvif/if0004.h> 28 29 static int 30 nvkm_nvsw_uevent(struct nvkm_object *object, void *argv, u32 argc, struct nvkm_uevent *uevent) 31 { 32 union nv04_nvsw_event_args *args = argv; 33 34 if (!uevent) 35 return 0; 36 if (argc != sizeof(args->vn)) 37 return -ENOSYS; 38 39 return nvkm_uevent_add(uevent, &nvkm_nvsw(object)->chan->event, 0, 40 NVKM_SW_CHAN_EVENT_PAGE_FLIP, NULL); 41 } 42 43 static int 44 nvkm_nvsw_mthd(struct nvkm_object *object, u32 mthd, void *data, u32 size) 45 { 46 struct nvkm_nvsw *nvsw = nvkm_nvsw(object); 47 48 if (nvsw->func->mthd) 49 return nvsw->func->mthd(nvsw, mthd, data, size); 50 51 return -ENODEV; 52 } 53 54 static const struct nvkm_object_func 55 nvkm_nvsw_ = { 56 .mthd = nvkm_nvsw_mthd, 57 .uevent = nvkm_nvsw_uevent, 58 }; 59 60 int 61 nvkm_nvsw_new_(const struct nvkm_nvsw_func *func, struct nvkm_sw_chan *chan, 62 const struct nvkm_oclass *oclass, void *data, u32 size, 63 struct nvkm_object **pobject) 64 { 65 struct nvkm_nvsw *nvsw; 66 67 if (!(nvsw = kzalloc(sizeof(*nvsw), GFP_KERNEL))) 68 return -ENOMEM; 69 *pobject = &nvsw->object; 70 71 nvkm_object_ctor(&nvkm_nvsw_, oclass, &nvsw->object); 72 nvsw->func = func; 73 nvsw->chan = chan; 74 return 0; 75 } 76 77 static const struct nvkm_nvsw_func 78 nvkm_nvsw = { 79 }; 80 81 int 82 nvkm_nvsw_new(struct nvkm_sw_chan *chan, const struct nvkm_oclass *oclass, 83 void *data, u32 size, struct nvkm_object **pobject) 84 { 85 return nvkm_nvsw_new_(&nvkm_nvsw, chan, oclass, data, size, pobject); 86 } 87