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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#include "nv31.h"25 26#include <subdev/instmem.h>27 28#include <nvif/class.h>29 30bool31nv40_mpeg_mthd_dma(struct nvkm_device *device, u32 mthd, u32 data)32{33 struct nvkm_instmem *imem = device->imem;34 struct nv31_mpeg *mpeg = nv31_mpeg(device->mpeg);35 struct nvkm_subdev *subdev = &mpeg->engine.subdev;36 u32 inst = data << 4;37 u32 dma0 = nvkm_instmem_rd32(imem, inst + 0);38 u32 dma1 = nvkm_instmem_rd32(imem, inst + 4);39 u32 dma2 = nvkm_instmem_rd32(imem, inst + 8);40 u32 base = (dma2 & 0xfffff000) | (dma0 >> 20);41 u32 size = dma1 + 1;42 43 /* only allow linear DMA objects */44 if (!(dma0 & 0x00002000)) {45 nvkm_error(subdev, "inst %08x dma0 %08x dma1 %08x dma2 %08x\n",46 inst, dma0, dma1, dma2);47 return false;48 }49 50 if (mthd == 0x0190) {51 /* DMA_CMD */52 nvkm_mask(device, 0x00b300, 0x00030000, (dma0 & 0x00030000));53 nvkm_wr32(device, 0x00b334, base);54 nvkm_wr32(device, 0x00b324, size);55 } else56 if (mthd == 0x01a0) {57 /* DMA_DATA */58 nvkm_mask(device, 0x00b300, 0x000c0000, (dma0 & 0x00030000) << 2);59 nvkm_wr32(device, 0x00b360, base);60 nvkm_wr32(device, 0x00b364, size);61 } else {62 /* DMA_IMAGE, VRAM only */63 if (dma0 & 0x00030000)64 return false;65 66 nvkm_wr32(device, 0x00b370, base);67 nvkm_wr32(device, 0x00b374, size);68 }69 70 return true;71}72 73static const struct nv31_mpeg_func74nv40_mpeg = {75 .mthd_dma = nv40_mpeg_mthd_dma,76};77 78int79nv40_mpeg_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,80 struct nvkm_engine **pmpeg)81{82 return nv31_mpeg_new_(&nv40_mpeg, device, type, inst, pmpeg);83}84