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/ioctl.h> 31 #include <nvif/unpack.h> 32 33 struct nv04_sw_chan { 34 struct nvkm_sw_chan base; 35 atomic_t ref; 36 }; 37 38 /******************************************************************************* 39 * software object classes 40 ******************************************************************************/ 41 42 static int 43 nv04_nvsw_mthd_get_ref(struct nvkm_nvsw *nvsw, void *data, u32 size) 44 { 45 struct nv04_sw_chan *chan = nv04_sw_chan(nvsw->chan); 46 union { 47 struct nv04_nvsw_get_ref_v0 v0; 48 } *args = data; 49 int ret; 50 51 if (nvif_unpack(args->v0, 0, 0, false)) { 52 args->v0.ref = atomic_read(&chan->ref); 53 } 54 55 return ret; 56 } 57 58 static int 59 nv04_nvsw_mthd(struct nvkm_nvsw *nvsw, u32 mthd, void *data, u32 size) 60 { 61 switch (mthd) { 62 case NV04_NVSW_GET_REF: 63 return nv04_nvsw_mthd_get_ref(nvsw, data, size); 64 default: 65 break; 66 } 67 return -EINVAL; 68 } 69 70 static const struct nvkm_nvsw_func 71 nv04_nvsw = { 72 .mthd = nv04_nvsw_mthd, 73 }; 74 75 static int 76 nv04_nvsw_new(struct nvkm_sw_chan *chan, const struct nvkm_oclass *oclass, 77 void *data, u32 size, struct nvkm_object **pobject) 78 { 79 return nvkm_nvsw_new_(&nv04_nvsw, chan, oclass, data, size, pobject); 80 } 81 82 /******************************************************************************* 83 * software context 84 ******************************************************************************/ 85 86 static bool 87 nv04_sw_chan_mthd(struct nvkm_sw_chan *base, int subc, u32 mthd, u32 data) 88 { 89 struct nv04_sw_chan *chan = nv04_sw_chan(base); 90 91 switch (mthd) { 92 case 0x0150: 93 atomic_set(&chan->ref, data); 94 return true; 95 default: 96 break; 97 } 98 99 return false; 100 } 101 102 static const struct nvkm_sw_chan_func 103 nv04_sw_chan = { 104 .mthd = nv04_sw_chan_mthd, 105 }; 106 107 static int 108 nv04_sw_chan_new(struct nvkm_sw *sw, struct nvkm_fifo_chan *fifo, 109 const struct nvkm_oclass *oclass, struct nvkm_object **pobject) 110 { 111 struct nv04_sw_chan *chan; 112 113 if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL))) 114 return -ENOMEM; 115 atomic_set(&chan->ref, 0); 116 *pobject = &chan->base.object; 117 118 return nvkm_sw_chan_ctor(&nv04_sw_chan, sw, fifo, oclass, &chan->base); 119 } 120 121 /******************************************************************************* 122 * software engine/subdev functions 123 ******************************************************************************/ 124 125 static const struct nvkm_sw_func 126 nv04_sw = { 127 .chan_new = nv04_sw_chan_new, 128 .sclass = { 129 { nv04_nvsw_new, { -1, -1, NVIF_IOCTL_NEW_V0_SW_NV04 } }, 130 {} 131 } 132 }; 133 134 int 135 nv04_sw_new(struct nvkm_device *device, int index, struct nvkm_sw **psw) 136 { 137 return nvkm_sw_new_(&nv04_sw, device, index, psw); 138 } 139