| 1 | /* $NetBSD: nouveau_engine_mpeg_nv40.c,v 1.1.1.1 2014/08/06 12:36:27 riastradh Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright 2012 Red Hat Inc. |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 7 | * copy of this software and associated documentation files (the "Software"), |
| 8 | * to deal in the Software without restriction, including without limitation |
| 9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 10 | * and/or sell copies of the Software, and to permit persons to whom the |
| 11 | * Software is furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 20 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 21 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 22 | * OTHER DEALINGS IN THE SOFTWARE. |
| 23 | * |
| 24 | * Authors: Ben Skeggs |
| 25 | */ |
| 26 | |
| 27 | #include <sys/cdefs.h> |
| 28 | __KERNEL_RCSID(0, "$NetBSD: nouveau_engine_mpeg_nv40.c,v 1.1.1.1 2014/08/06 12:36:27 riastradh Exp $" ); |
| 29 | |
| 30 | #include <core/os.h> |
| 31 | #include <core/class.h> |
| 32 | #include <core/engctx.h> |
| 33 | |
| 34 | #include <subdev/fb.h> |
| 35 | #include <subdev/timer.h> |
| 36 | #include <subdev/instmem.h> |
| 37 | |
| 38 | #include <engine/mpeg.h> |
| 39 | #include <engine/mpeg/nv31.h> |
| 40 | |
| 41 | /******************************************************************************* |
| 42 | * MPEG object classes |
| 43 | ******************************************************************************/ |
| 44 | |
| 45 | static int |
| 46 | nv40_mpeg_mthd_dma(struct nouveau_object *object, u32 mthd, void *arg, u32 len) |
| 47 | { |
| 48 | struct nouveau_instmem *imem = nouveau_instmem(object); |
| 49 | struct nv31_mpeg_priv *priv = (void *)object->engine; |
| 50 | u32 inst = *(u32 *)arg << 4; |
| 51 | u32 dma0 = nv_ro32(imem, inst + 0); |
| 52 | u32 dma1 = nv_ro32(imem, inst + 4); |
| 53 | u32 dma2 = nv_ro32(imem, inst + 8); |
| 54 | u32 base = (dma2 & 0xfffff000) | (dma0 >> 20); |
| 55 | u32 size = dma1 + 1; |
| 56 | |
| 57 | /* only allow linear DMA objects */ |
| 58 | if (!(dma0 & 0x00002000)) |
| 59 | return -EINVAL; |
| 60 | |
| 61 | if (mthd == 0x0190) { |
| 62 | /* DMA_CMD */ |
| 63 | nv_mask(priv, 0x00b300, 0x00030000, (dma0 & 0x00030000)); |
| 64 | nv_wr32(priv, 0x00b334, base); |
| 65 | nv_wr32(priv, 0x00b324, size); |
| 66 | } else |
| 67 | if (mthd == 0x01a0) { |
| 68 | /* DMA_DATA */ |
| 69 | nv_mask(priv, 0x00b300, 0x000c0000, (dma0 & 0x00030000) << 2); |
| 70 | nv_wr32(priv, 0x00b360, base); |
| 71 | nv_wr32(priv, 0x00b364, size); |
| 72 | } else { |
| 73 | /* DMA_IMAGE, VRAM only */ |
| 74 | if (dma0 & 0x00030000) |
| 75 | return -EINVAL; |
| 76 | |
| 77 | nv_wr32(priv, 0x00b370, base); |
| 78 | nv_wr32(priv, 0x00b374, size); |
| 79 | } |
| 80 | |
| 81 | return 0; |
| 82 | } |
| 83 | |
| 84 | static struct nouveau_omthds |
| 85 | nv40_mpeg_omthds[] = { |
| 86 | { 0x0190, 0x0190, nv40_mpeg_mthd_dma }, |
| 87 | { 0x01a0, 0x01a0, nv40_mpeg_mthd_dma }, |
| 88 | { 0x01b0, 0x01b0, nv40_mpeg_mthd_dma }, |
| 89 | {} |
| 90 | }; |
| 91 | |
| 92 | struct nouveau_oclass |
| 93 | nv40_mpeg_sclass[] = { |
| 94 | { 0x3174, &nv31_mpeg_ofuncs, nv40_mpeg_omthds }, |
| 95 | {} |
| 96 | }; |
| 97 | |
| 98 | /******************************************************************************* |
| 99 | * PMPEG engine/subdev functions |
| 100 | ******************************************************************************/ |
| 101 | |
| 102 | static void |
| 103 | nv40_mpeg_intr(struct nouveau_subdev *subdev) |
| 104 | { |
| 105 | struct nv31_mpeg_priv *priv = (void *)subdev; |
| 106 | u32 stat; |
| 107 | |
| 108 | if ((stat = nv_rd32(priv, 0x00b100))) |
| 109 | nv31_mpeg_intr(subdev); |
| 110 | |
| 111 | if ((stat = nv_rd32(priv, 0x00b800))) { |
| 112 | nv_error(priv, "PMSRCH 0x%08x\n" , stat); |
| 113 | nv_wr32(priv, 0x00b800, stat); |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | static int |
| 118 | nv40_mpeg_ctor(struct nouveau_object *parent, struct nouveau_object *engine, |
| 119 | struct nouveau_oclass *oclass, void *data, u32 size, |
| 120 | struct nouveau_object **pobject) |
| 121 | { |
| 122 | struct nv31_mpeg_priv *priv; |
| 123 | int ret; |
| 124 | |
| 125 | ret = nouveau_mpeg_create(parent, engine, oclass, &priv); |
| 126 | *pobject = nv_object(priv); |
| 127 | if (ret) |
| 128 | return ret; |
| 129 | |
| 130 | nv_subdev(priv)->unit = 0x00000002; |
| 131 | nv_subdev(priv)->intr = nv40_mpeg_intr; |
| 132 | nv_engine(priv)->cclass = &nv31_mpeg_cclass; |
| 133 | nv_engine(priv)->sclass = nv40_mpeg_sclass; |
| 134 | nv_engine(priv)->tile_prog = nv31_mpeg_tile_prog; |
| 135 | return 0; |
| 136 | } |
| 137 | |
| 138 | struct nouveau_oclass |
| 139 | nv40_mpeg_oclass = { |
| 140 | .handle = NV_ENGINE(MPEG, 0x40), |
| 141 | .ofuncs = &(struct nouveau_ofuncs) { |
| 142 | .ctor = nv40_mpeg_ctor, |
| 143 | .dtor = _nouveau_mpeg_dtor, |
| 144 | .init = nv31_mpeg_init, |
| 145 | .fini = _nouveau_mpeg_fini, |
| 146 | }, |
| 147 | }; |
| 148 | |