| /* |
| * 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; |
| } |
| |
| 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); |
| } |
| |
| 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; |
| } |
| |
| 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; |
| } |
| |
| static void * |
| nvkm_dma_dtor(struct nvkm_engine *engine) |
| { |
| return nvkm_dma(engine); |
| } |
| |
| 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, |
| enum nvkm_subdev_type type, int inst, 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, type, inst, true, &dma->engine); |
| } |