cregit-Linux how code gets into the kernel

Release 4.11 drivers/gpu/drm/nouveau/nvkm/engine/dma/base.c

/*
 * Copyright 2012 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.
 *
 * Authors: Ben Skeggs
 */
#include "priv.h"

#include <core/client.h>
#include <engine/fifo.h>

#include <nvif/class.h>


static int nvkm_dma_oclass_new(struct nvkm_device *device, const struct nvkm_oclass *oclass, void *data, u32 size, struct nvkm_object **pobject) { struct nvkm_dma *dma = nvkm_dma(oclass->engine); struct nvkm_dmaobj *dmaobj = NULL; int ret; ret = dma->func->class_new(dma, oclass, data, size, &dmaobj); if (dmaobj) *pobject = &dmaobj->object; return ret; }

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Ben Skeggs87100.00%3100.00%
Total87100.00%3100.00%

static const struct nvkm_device_oclass nvkm_dma_oclass_base = { .ctor = nvkm_dma_oclass_new, };
static int nvkm_dma_oclass_fifo_new(const struct nvkm_oclass *oclass, void *data, u32 size, struct nvkm_object **pobject) { return nvkm_dma_oclass_new(oclass->engine->subdev.device, oclass, data, size, pobject); }

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Ben Skeggs45100.00%1100.00%
Total45100.00%1100.00%

static const struct nvkm_sclass nvkm_dma_sclass[] = { { 0, 0, NV_DMA_FROM_MEMORY, NULL, nvkm_dma_oclass_fifo_new }, { 0, 0, NV_DMA_TO_MEMORY, NULL, nvkm_dma_oclass_fifo_new }, { 0, 0, NV_DMA_IN_MEMORY, NULL, nvkm_dma_oclass_fifo_new }, };
static int nvkm_dma_oclass_base_get(struct nvkm_oclass *sclass, int index, const struct nvkm_device_oclass **class) { const int count = ARRAY_SIZE(nvkm_dma_sclass); if (index < count) { const struct nvkm_sclass *oclass = &nvkm_dma_sclass[index]; sclass->base = oclass[0]; sclass->engn = oclass; *class = &nvkm_dma_oclass_base; return index; } return count; }

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Ben Skeggs77100.00%1100.00%
Total77100.00%1100.00%


static int nvkm_dma_oclass_fifo_get(struct nvkm_oclass *oclass, int index) { const int count = ARRAY_SIZE(nvkm_dma_sclass); if (index < count) { oclass->base = nvkm_dma_sclass[index]; return index; } return count; }

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Ben Skeggs46100.00%6100.00%
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static void * nvkm_dma_dtor(struct nvkm_engine *engine) { return nvkm_dma(engine); }

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Ben Skeggs18100.00%1100.00%
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static const struct nvkm_engine_func nvkm_dma = { .dtor = nvkm_dma_dtor, .base.sclass = nvkm_dma_oclass_base_get, .fifo.sclass = nvkm_dma_oclass_fifo_get, };
int nvkm_dma_new_(const struct nvkm_dma_func *func, struct nvkm_device *device, int index, struct nvkm_dma **pdma) { struct nvkm_dma *dma; if (!(dma = *pdma = kzalloc(sizeof(*dma), GFP_KERNEL))) return -ENOMEM; dma->func = func; return nvkm_engine_ctor(&nvkm_dma, device, index, true, &dma->engine); }

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Ben Skeggs79100.00%5100.00%
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Ben Skeggs450100.00%11100.00%
Total450100.00%11100.00%
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