1 /* 2 * Copyright 2012 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 23 */ 24 #define nv04_sw_chan(p) container_of((p), struct nv04_sw_chan, base) 25 #include "priv.h" 26 #include "chan.h" 27 #include "nvsw.h" 28 29 #include <nvif/class.h> 30 #include <nvif/if0004.h> 31 #include <nvif/ioctl.h> 32 #include <nvif/unpack.h> 33 34 struct nv04_sw_chan { 35 struct nvkm_sw_chan base; 36 atomic_t ref; 37 }; 38 39 /******************************************************************************* 40 * software object classes 41 ******************************************************************************/ 42 43 static int 44 nv04_nvsw_mthd_get_ref(struct nvkm_nvsw *nvsw, void *data, u32 size) 45 { 46 struct nv04_sw_chan *chan = nv04_sw_chan(nvsw->chan); 47 union { 48 struct nv04_nvsw_get_ref_v0 v0; 49 } *args = data; 50 int ret = -ENOSYS; 51 52 if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) { 53 args->v0.ref = atomic_read(&chan->ref); 54 } 55 56 return ret; 57 } 58 59 static int 60 nv04_nvsw_mthd(struct nvkm_nvsw *nvsw, u32 mthd, void *data, u32 size) 61 { 62 switch (mthd) { 63 case NV04_NVSW_GET_REF: 64 return nv04_nvsw_mthd_get_ref(nvsw, data, size); 65 default: 66 break; 67 } 68 return -EINVAL; 69 } 70 71 static const struct nvkm_nvsw_func 72 nv04_nvsw = { 73 .mthd = nv04_nvsw_mthd, 74 }; 75 76 static int 77 nv04_nvsw_new(struct nvkm_sw_chan *chan, const struct nvkm_oclass *oclass, 78 void *data, u32 size, struct nvkm_object **pobject) 79 { 80 return nvkm_nvsw_new_(&nv04_nvsw, chan, oclass, data, size, pobject); 81 } 82 83 /******************************************************************************* 84 * software context 85 ******************************************************************************/ 86 87 static bool 88 nv04_sw_chan_mthd(struct nvkm_sw_chan *base, int subc, u32 mthd, u32 data) 89 { 90 struct nv04_sw_chan *chan = nv04_sw_chan(base); 91 92 switch (mthd) { 93 case 0x0150: 94 atomic_set(&chan->ref, data); 95 return true; 96 default: 97 break; 98 } 99 100 return false; 101 } 102 103 static const struct nvkm_sw_chan_func 104 nv04_sw_chan = { 105 .mthd = nv04_sw_chan_mthd, 106 }; 107 108 static int 109 nv04_sw_chan_new(struct nvkm_sw *sw, struct nvkm_chan *fifo, 110 const struct nvkm_oclass *oclass, struct nvkm_object **pobject) 111 { 112 struct nv04_sw_chan *chan; 113 114 if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL))) 115 return -ENOMEM; 116 atomic_set(&chan->ref, 0); 117 *pobject = &chan->base.object; 118 119 return nvkm_sw_chan_ctor(&nv04_sw_chan, sw, fifo, oclass, &chan->base); 120 } 121 122 /******************************************************************************* 123 * software engine/subdev functions 124 ******************************************************************************/ 125 126 static const struct nvkm_sw_func 127 nv04_sw = { 128 .chan_new = nv04_sw_chan_new, 129 .sclass = { 130 { nv04_nvsw_new, { -1, -1, NVIF_CLASS_SW_NV04 } }, 131 {} 132 } 133 }; 134 135 int 136 nv04_sw_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_sw **psw) 137 { 138 return nvkm_sw_new_(&nv04_sw, device, type, inst, psw); 139 } 140