1c39f472eSBen Skeggs /* 2c39f472eSBen Skeggs * Copyright 2012 Red Hat Inc. 3c39f472eSBen Skeggs * 4c39f472eSBen Skeggs * Permission is hereby granted, free of charge, to any person obtaining a 5c39f472eSBen Skeggs * copy of this software and associated documentation files (the "Software"), 6c39f472eSBen Skeggs * to deal in the Software without restriction, including without limitation 7c39f472eSBen Skeggs * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8c39f472eSBen Skeggs * and/or sell copies of the Software, and to permit persons to whom the 9c39f472eSBen Skeggs * Software is furnished to do so, subject to the following conditions: 10c39f472eSBen Skeggs * 11c39f472eSBen Skeggs * The above copyright notice and this permission notice shall be included in 12c39f472eSBen Skeggs * all copies or substantial portions of the Software. 13c39f472eSBen Skeggs * 14c39f472eSBen Skeggs * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15c39f472eSBen Skeggs * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16c39f472eSBen Skeggs * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17c39f472eSBen Skeggs * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18c39f472eSBen Skeggs * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19c39f472eSBen Skeggs * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20c39f472eSBen Skeggs * OTHER DEALINGS IN THE SOFTWARE. 21c39f472eSBen Skeggs * 22c39f472eSBen Skeggs * Authors: Ben Skeggs 23c39f472eSBen Skeggs */ 24e7c29683SBen Skeggs #include "nv31.h" 25c39f472eSBen Skeggs 26c39f472eSBen Skeggs #include <subdev/instmem.h> 27c39f472eSBen Skeggs 28218f978dSBen Skeggs #include <nvif/class.h> 29c39f472eSBen Skeggs 30590801c1SBen Skeggs bool 31590801c1SBen Skeggs nv40_mpeg_mthd_dma(struct nvkm_device *device, u32 mthd, u32 data) 32c39f472eSBen Skeggs { 33636e37aaSBen Skeggs struct nvkm_instmem *imem = device->imem; 34590801c1SBen Skeggs u32 inst = data << 4; 35b7a2bc18SBen Skeggs u32 dma0 = nvkm_instmem_rd32(imem, inst + 0); 36b7a2bc18SBen Skeggs u32 dma1 = nvkm_instmem_rd32(imem, inst + 4); 37b7a2bc18SBen Skeggs u32 dma2 = nvkm_instmem_rd32(imem, inst + 8); 38c39f472eSBen Skeggs u32 base = (dma2 & 0xfffff000) | (dma0 >> 20); 39c39f472eSBen Skeggs u32 size = dma1 + 1; 40c39f472eSBen Skeggs 41c39f472eSBen Skeggs /* only allow linear DMA objects */ 42c39f472eSBen Skeggs if (!(dma0 & 0x00002000)) 43590801c1SBen Skeggs return false; 44c39f472eSBen Skeggs 45c39f472eSBen Skeggs if (mthd == 0x0190) { 46c39f472eSBen Skeggs /* DMA_CMD */ 47636e37aaSBen Skeggs nvkm_mask(device, 0x00b300, 0x00030000, (dma0 & 0x00030000)); 48636e37aaSBen Skeggs nvkm_wr32(device, 0x00b334, base); 49636e37aaSBen Skeggs nvkm_wr32(device, 0x00b324, size); 50c39f472eSBen Skeggs } else 51c39f472eSBen Skeggs if (mthd == 0x01a0) { 52c39f472eSBen Skeggs /* DMA_DATA */ 53636e37aaSBen Skeggs nvkm_mask(device, 0x00b300, 0x000c0000, (dma0 & 0x00030000) << 2); 54636e37aaSBen Skeggs nvkm_wr32(device, 0x00b360, base); 55636e37aaSBen Skeggs nvkm_wr32(device, 0x00b364, size); 56c39f472eSBen Skeggs } else { 57c39f472eSBen Skeggs /* DMA_IMAGE, VRAM only */ 58c39f472eSBen Skeggs if (dma0 & 0x00030000) 59590801c1SBen Skeggs return false; 60c39f472eSBen Skeggs 61636e37aaSBen Skeggs nvkm_wr32(device, 0x00b370, base); 62636e37aaSBen Skeggs nvkm_wr32(device, 0x00b374, size); 63c39f472eSBen Skeggs } 64c39f472eSBen Skeggs 65590801c1SBen Skeggs return true; 66c39f472eSBen Skeggs } 67c39f472eSBen Skeggs 687624fc01SBen Skeggs static const struct nv31_mpeg_func 69218f978dSBen Skeggs nv40_mpeg = { 707624fc01SBen Skeggs .mthd_dma = nv40_mpeg_mthd_dma, 71218f978dSBen Skeggs }; 72218f978dSBen Skeggs 737624fc01SBen Skeggs int 747624fc01SBen Skeggs nv40_mpeg_new(struct nvkm_device *device, int index, struct nvkm_engine **pmpeg) 75c39f472eSBen Skeggs { 767624fc01SBen Skeggs return nv31_mpeg_new_(&nv40_mpeg, device, index, pmpeg); 77c39f472eSBen Skeggs } 78