| 1 | /* $NetBSD: nouveau_engine_dmaobj_nv04.c,v 1.1.1.1 2014/08/06 12:36:24 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_dmaobj_nv04.c,v 1.1.1.1 2014/08/06 12:36:24 riastradh Exp $" ); |
| 29 | |
| 30 | #include <core/gpuobj.h> |
| 31 | #include <core/class.h> |
| 32 | |
| 33 | #include <subdev/fb.h> |
| 34 | #include <subdev/vm/nv04.h> |
| 35 | |
| 36 | #include <engine/dmaobj.h> |
| 37 | |
| 38 | struct nv04_dmaeng_priv { |
| 39 | struct nouveau_dmaeng base; |
| 40 | }; |
| 41 | |
| 42 | static int |
| 43 | nv04_dmaobj_bind(struct nouveau_dmaeng *dmaeng, |
| 44 | struct nouveau_object *parent, |
| 45 | struct nouveau_dmaobj *dmaobj, |
| 46 | struct nouveau_gpuobj **pgpuobj) |
| 47 | { |
| 48 | struct nv04_vmmgr_priv *vmm = nv04_vmmgr(dmaeng); |
| 49 | struct nouveau_gpuobj *gpuobj; |
| 50 | u32 flags0 = nv_mclass(dmaobj); |
| 51 | u32 flags2 = 0x00000000; |
| 52 | u64 offset = dmaobj->start & 0xfffff000; |
| 53 | u64 adjust = dmaobj->start & 0x00000fff; |
| 54 | u32 length = dmaobj->limit - dmaobj->start; |
| 55 | int ret; |
| 56 | |
| 57 | if (!nv_iclass(parent, NV_ENGCTX_CLASS)) { |
| 58 | switch (nv_mclass(parent->parent)) { |
| 59 | case NV03_CHANNEL_DMA_CLASS: |
| 60 | case NV10_CHANNEL_DMA_CLASS: |
| 61 | case NV17_CHANNEL_DMA_CLASS: |
| 62 | case NV40_CHANNEL_DMA_CLASS: |
| 63 | break; |
| 64 | default: |
| 65 | return -EINVAL; |
| 66 | } |
| 67 | } |
| 68 | |
| 69 | if (dmaobj->target == NV_MEM_TARGET_VM) { |
| 70 | if (nv_object(vmm)->oclass == &nv04_vmmgr_oclass) { |
| 71 | struct nouveau_gpuobj *pgt = vmm->vm->pgt[0].obj[0]; |
| 72 | if (!dmaobj->start) |
| 73 | return nouveau_gpuobj_dup(parent, pgt, pgpuobj); |
| 74 | offset = nv_ro32(pgt, 8 + (offset >> 10)); |
| 75 | offset &= 0xfffff000; |
| 76 | } |
| 77 | |
| 78 | dmaobj->target = NV_MEM_TARGET_PCI; |
| 79 | dmaobj->access = NV_MEM_ACCESS_RW; |
| 80 | } |
| 81 | |
| 82 | switch (dmaobj->target) { |
| 83 | case NV_MEM_TARGET_VRAM: |
| 84 | flags0 |= 0x00003000; |
| 85 | break; |
| 86 | case NV_MEM_TARGET_PCI: |
| 87 | flags0 |= 0x00023000; |
| 88 | break; |
| 89 | case NV_MEM_TARGET_PCI_NOSNOOP: |
| 90 | flags0 |= 0x00033000; |
| 91 | break; |
| 92 | default: |
| 93 | return -EINVAL; |
| 94 | } |
| 95 | |
| 96 | switch (dmaobj->access) { |
| 97 | case NV_MEM_ACCESS_RO: |
| 98 | flags0 |= 0x00004000; |
| 99 | break; |
| 100 | case NV_MEM_ACCESS_WO: |
| 101 | flags0 |= 0x00008000; |
| 102 | case NV_MEM_ACCESS_RW: |
| 103 | flags2 |= 0x00000002; |
| 104 | break; |
| 105 | default: |
| 106 | return -EINVAL; |
| 107 | } |
| 108 | |
| 109 | ret = nouveau_gpuobj_new(parent, parent, 16, 16, 0, &gpuobj); |
| 110 | *pgpuobj = gpuobj; |
| 111 | if (ret == 0) { |
| 112 | nv_wo32(*pgpuobj, 0x00, flags0 | (adjust << 20)); |
| 113 | nv_wo32(*pgpuobj, 0x04, length); |
| 114 | nv_wo32(*pgpuobj, 0x08, flags2 | offset); |
| 115 | nv_wo32(*pgpuobj, 0x0c, flags2 | offset); |
| 116 | } |
| 117 | |
| 118 | return ret; |
| 119 | } |
| 120 | |
| 121 | static int |
| 122 | nv04_dmaeng_ctor(struct nouveau_object *parent, struct nouveau_object *engine, |
| 123 | struct nouveau_oclass *oclass, void *data, u32 size, |
| 124 | struct nouveau_object **pobject) |
| 125 | { |
| 126 | struct nv04_dmaeng_priv *priv; |
| 127 | int ret; |
| 128 | |
| 129 | ret = nouveau_dmaeng_create(parent, engine, oclass, &priv); |
| 130 | *pobject = nv_object(priv); |
| 131 | if (ret) |
| 132 | return ret; |
| 133 | |
| 134 | nv_engine(priv)->sclass = nouveau_dmaobj_sclass; |
| 135 | priv->base.bind = nv04_dmaobj_bind; |
| 136 | return 0; |
| 137 | } |
| 138 | |
| 139 | struct nouveau_oclass |
| 140 | nv04_dmaeng_oclass = { |
| 141 | .handle = NV_ENGINE(DMAOBJ, 0x04), |
| 142 | .ofuncs = &(struct nouveau_ofuncs) { |
| 143 | .ctor = nv04_dmaeng_ctor, |
| 144 | .dtor = _nouveau_dmaeng_dtor, |
| 145 | .init = _nouveau_dmaeng_init, |
| 146 | .fini = _nouveau_dmaeng_fini, |
| 147 | }, |
| 148 | }; |
| 149 | |