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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 | /* * Copyright 2021 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. */ #define nvkm_uhead(p) container_of((p), struct nvkm_head, object) #include "head.h" #include <core/event.h> #include <nvif/if0013.h> #include <nvif/event.h> static int nvkm_uhead_uevent(struct nvkm_object *object, void *argv, u32 argc, struct nvkm_uevent *uevent) { struct nvkm_head *head = nvkm_uhead(object); union nvif_head_event_args *args = argv; if (!uevent) return 0; if (argc != sizeof(args->vn)) return -ENOSYS; return nvkm_uevent_add(uevent, &head->disp->vblank, head->id, NVKM_DISP_HEAD_EVENT_VBLANK, NULL); } static int nvkm_uhead_mthd_scanoutpos(struct nvkm_head *head, void *argv, u32 argc) { union nvif_head_scanoutpos_args *args = argv; if (argc != sizeof(args->v0) || args->v0.version != 0) return -ENOSYS; head->func->state(head, &head->arm); args->v0.vtotal = head->arm.vtotal; args->v0.vblanks = head->arm.vblanks; args->v0.vblanke = head->arm.vblanke; args->v0.htotal = head->arm.htotal; args->v0.hblanks = head->arm.hblanks; args->v0.hblanke = head->arm.hblanke; /* We don't support reading htotal/vtotal on pre-NV50 VGA, * so we have to give up and trigger the timestamping * fallback in the drm core. */ if (!args->v0.vtotal || !args->v0.htotal) return -ENOTSUPP; args->v0.time[0] = ktime_to_ns(ktime_get()); head->func->rgpos(head, &args->v0.hline, &args->v0.vline); args->v0.time[1] = ktime_to_ns(ktime_get()); return 0; } static int nvkm_uhead_mthd(struct nvkm_object *object, u32 mthd, void *argv, u32 argc) { struct nvkm_head *head = nvkm_uhead(object); switch (mthd) { case NVIF_HEAD_V0_SCANOUTPOS: return nvkm_uhead_mthd_scanoutpos(head, argv, argc); default: return -EINVAL; } } static void * nvkm_uhead_dtor(struct nvkm_object *object) { struct nvkm_head *head = nvkm_uhead(object); struct nvkm_disp *disp = head->disp; spin_lock(&disp->client.lock); head->object.func = NULL; spin_unlock(&disp->client.lock); return NULL; } static const struct nvkm_object_func nvkm_uhead = { .dtor = nvkm_uhead_dtor, .mthd = nvkm_uhead_mthd, .uevent = nvkm_uhead_uevent, }; int nvkm_uhead_new(const struct nvkm_oclass *oclass, void *argv, u32 argc, struct nvkm_object **pobject) { struct nvkm_disp *disp = nvkm_udisp(oclass->parent); struct nvkm_head *head; union nvif_head_args *args = argv; int ret; if (argc != sizeof(args->v0) || args->v0.version != 0) return -ENOSYS; if (!(head = nvkm_head_find(disp, args->v0.id))) return -EINVAL; ret = -EBUSY; spin_lock(&disp->client.lock); if (!head->object.func) { nvkm_object_ctor(&nvkm_uhead, oclass, &head->object); *pobject = &head->object; ret = 0; } spin_unlock(&disp->client.lock); return ret; } |