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1/*2 * Copyright 2012 Red Hat Inc.3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice shall be included in12 * all copies or substantial portions of the Software.13 *14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR18 * 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 OR20 * OTHER DEALINGS IN THE SOFTWARE.21 *22 * Authors: Ben Skeggs23 */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 34struct nv04_sw_chan {35 struct nvkm_sw_chan base;36 atomic_t ref;37};38 39/*******************************************************************************40 * software object classes41 ******************************************************************************/42 43static int44nv04_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 59static int60nv04_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 71static const struct nvkm_nvsw_func72nv04_nvsw = {73 .mthd = nv04_nvsw_mthd,74};75 76static int77nv04_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 context85 ******************************************************************************/86 87static bool88nv04_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 103static const struct nvkm_sw_chan_func104nv04_sw_chan = {105 .mthd = nv04_sw_chan_mthd,106};107 108static int109nv04_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 functions124 ******************************************************************************/125 126static const struct nvkm_sw_func127nv04_sw = {128 .chan_new = nv04_sw_chan_new,129 .sclass = {130 { nv04_nvsw_new, { -1, -1, NVIF_CLASS_SW_NV04 } },131 {}132 }133};134 135int136nv04_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