| 1 | /* $NetBSD: nouveau_engine_dmaobj_base.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_base.c,v 1.1.1.1 2014/08/06 12:36:24 riastradh Exp $" ); |
| 29 | |
| 30 | #include <core/object.h> |
| 31 | #include <core/class.h> |
| 32 | |
| 33 | #include <subdev/fb.h> |
| 34 | #include <engine/dmaobj.h> |
| 35 | |
| 36 | static int |
| 37 | nouveau_dmaobj_ctor(struct nouveau_object *parent, |
| 38 | struct nouveau_object *engine, |
| 39 | struct nouveau_oclass *oclass, void *data, u32 size, |
| 40 | struct nouveau_object **pobject) |
| 41 | { |
| 42 | struct nouveau_dmaeng *dmaeng = (void *)engine; |
| 43 | struct nouveau_dmaobj *dmaobj; |
| 44 | struct nouveau_gpuobj *gpuobj; |
| 45 | struct nv_dma_class *args = data; |
| 46 | int ret; |
| 47 | |
| 48 | if (size < sizeof(*args)) |
| 49 | return -EINVAL; |
| 50 | |
| 51 | ret = nouveau_object_create(parent, engine, oclass, 0, &dmaobj); |
| 52 | *pobject = nv_object(dmaobj); |
| 53 | if (ret) |
| 54 | return ret; |
| 55 | |
| 56 | switch (args->flags & NV_DMA_TARGET_MASK) { |
| 57 | case NV_DMA_TARGET_VM: |
| 58 | dmaobj->target = NV_MEM_TARGET_VM; |
| 59 | break; |
| 60 | case NV_DMA_TARGET_VRAM: |
| 61 | dmaobj->target = NV_MEM_TARGET_VRAM; |
| 62 | break; |
| 63 | case NV_DMA_TARGET_PCI: |
| 64 | dmaobj->target = NV_MEM_TARGET_PCI; |
| 65 | break; |
| 66 | case NV_DMA_TARGET_PCI_US: |
| 67 | case NV_DMA_TARGET_AGP: |
| 68 | dmaobj->target = NV_MEM_TARGET_PCI_NOSNOOP; |
| 69 | break; |
| 70 | default: |
| 71 | return -EINVAL; |
| 72 | } |
| 73 | |
| 74 | switch (args->flags & NV_DMA_ACCESS_MASK) { |
| 75 | case NV_DMA_ACCESS_VM: |
| 76 | dmaobj->access = NV_MEM_ACCESS_VM; |
| 77 | break; |
| 78 | case NV_DMA_ACCESS_RD: |
| 79 | dmaobj->access = NV_MEM_ACCESS_RO; |
| 80 | break; |
| 81 | case NV_DMA_ACCESS_WR: |
| 82 | dmaobj->access = NV_MEM_ACCESS_WO; |
| 83 | break; |
| 84 | case NV_DMA_ACCESS_RDWR: |
| 85 | dmaobj->access = NV_MEM_ACCESS_RW; |
| 86 | break; |
| 87 | default: |
| 88 | return -EINVAL; |
| 89 | } |
| 90 | |
| 91 | dmaobj->start = args->start; |
| 92 | dmaobj->limit = args->limit; |
| 93 | dmaobj->conf0 = args->conf0; |
| 94 | |
| 95 | switch (nv_mclass(parent)) { |
| 96 | case NV_DEVICE_CLASS: |
| 97 | /* delayed, or no, binding */ |
| 98 | break; |
| 99 | default: |
| 100 | ret = dmaeng->bind(dmaeng, *pobject, dmaobj, &gpuobj); |
| 101 | if (ret == 0) { |
| 102 | nouveau_object_ref(NULL, pobject); |
| 103 | *pobject = nv_object(gpuobj); |
| 104 | } |
| 105 | break; |
| 106 | } |
| 107 | |
| 108 | return ret; |
| 109 | } |
| 110 | |
| 111 | static struct nouveau_ofuncs |
| 112 | nouveau_dmaobj_ofuncs = { |
| 113 | .ctor = nouveau_dmaobj_ctor, |
| 114 | .dtor = nouveau_object_destroy, |
| 115 | .init = nouveau_object_init, |
| 116 | .fini = nouveau_object_fini, |
| 117 | }; |
| 118 | |
| 119 | struct nouveau_oclass |
| 120 | nouveau_dmaobj_sclass[] = { |
| 121 | { NV_DMA_FROM_MEMORY_CLASS, &nouveau_dmaobj_ofuncs }, |
| 122 | { NV_DMA_TO_MEMORY_CLASS, &nouveau_dmaobj_ofuncs }, |
| 123 | { NV_DMA_IN_MEMORY_CLASS, &nouveau_dmaobj_ofuncs }, |
| 124 | {} |
| 125 | }; |
| 126 | |