/*
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* Copyright 2012 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Ben Skeggs
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*/
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#include "priv.h"
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#include <core/client.h>
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#include <engine/fifo.h>
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#include <nvif/class.h>
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static int
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nvkm_dma_oclass_new(struct nvkm_device *device,
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const struct nvkm_oclass *oclass, void *data, u32 size,
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struct nvkm_object **pobject)
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{
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struct nvkm_dma *dma = nvkm_dma(oclass->engine);
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struct nvkm_dmaobj *dmaobj = NULL;
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int ret;
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ret = dma->func->class_new(dma, oclass, data, size, &dmaobj);
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if (dmaobj)
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*pobject = &dmaobj->object;
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return ret;
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}
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static const struct nvkm_device_oclass
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nvkm_dma_oclass_base = {
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.ctor = nvkm_dma_oclass_new,
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};
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static int
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nvkm_dma_oclass_fifo_new(const struct nvkm_oclass *oclass, void *data, u32 size,
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struct nvkm_object **pobject)
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{
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return nvkm_dma_oclass_new(oclass->engine->subdev.device,
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oclass, data, size, pobject);
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}
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static const struct nvkm_sclass
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nvkm_dma_sclass[] = {
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{ 0, 0, NV_DMA_FROM_MEMORY, NULL, nvkm_dma_oclass_fifo_new },
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{ 0, 0, NV_DMA_TO_MEMORY, NULL, nvkm_dma_oclass_fifo_new },
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{ 0, 0, NV_DMA_IN_MEMORY, NULL, nvkm_dma_oclass_fifo_new },
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};
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static int
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nvkm_dma_oclass_base_get(struct nvkm_oclass *sclass, int index,
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const struct nvkm_device_oclass **class)
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{
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const int count = ARRAY_SIZE(nvkm_dma_sclass);
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if (index < count) {
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const struct nvkm_sclass *oclass = &nvkm_dma_sclass[index];
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sclass->base = oclass[0];
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sclass->engn = oclass;
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*class = &nvkm_dma_oclass_base;
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return index;
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}
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return count;
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}
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static int
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nvkm_dma_oclass_fifo_get(struct nvkm_oclass *oclass, int index)
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{
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const int count = ARRAY_SIZE(nvkm_dma_sclass);
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if (index < count) {
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oclass->base = nvkm_dma_sclass[index];
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return index;
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}
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return count;
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}
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static void *
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nvkm_dma_dtor(struct nvkm_engine *engine)
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{
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return nvkm_dma(engine);
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}
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static const struct nvkm_engine_func
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nvkm_dma = {
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.dtor = nvkm_dma_dtor,
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.base.sclass = nvkm_dma_oclass_base_get,
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.fifo.sclass = nvkm_dma_oclass_fifo_get,
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};
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int
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nvkm_dma_new_(const struct nvkm_dma_func *func, struct nvkm_device *device,
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int index, struct nvkm_dma **pdma)
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{
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struct nvkm_dma *dma;
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if (!(dma = *pdma = kzalloc(sizeof(*dma), GFP_KERNEL)))
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return -ENOMEM;
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dma->func = func;
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return nvkm_engine_ctor(&nvkm_dma, device, index, true, &dma->engine);
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}
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