| 1 | /* $NetBSD: nouveau_subdev_instmem_base.c,v 1.1.1.1 2014/08/06 12:36:30 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_subdev_instmem_base.c,v 1.1.1.1 2014/08/06 12:36:30 riastradh Exp $" ); |
| 29 | |
| 30 | #include "priv.h" |
| 31 | |
| 32 | /****************************************************************************** |
| 33 | * instmem object base implementation |
| 34 | *****************************************************************************/ |
| 35 | |
| 36 | void |
| 37 | _nouveau_instobj_dtor(struct nouveau_object *object) |
| 38 | { |
| 39 | struct nouveau_instmem *imem = (void *)object->engine; |
| 40 | struct nouveau_instobj *iobj = (void *)object; |
| 41 | |
| 42 | mutex_lock(&nv_subdev(imem)->mutex); |
| 43 | list_del(&iobj->head); |
| 44 | mutex_unlock(&nv_subdev(imem)->mutex); |
| 45 | |
| 46 | return nouveau_object_destroy(&iobj->base); |
| 47 | } |
| 48 | |
| 49 | int |
| 50 | nouveau_instobj_create_(struct nouveau_object *parent, |
| 51 | struct nouveau_object *engine, |
| 52 | struct nouveau_oclass *oclass, |
| 53 | int length, void **pobject) |
| 54 | { |
| 55 | struct nouveau_instmem *imem = (void *)engine; |
| 56 | struct nouveau_instobj *iobj; |
| 57 | int ret; |
| 58 | |
| 59 | ret = nouveau_object_create_(parent, engine, oclass, NV_MEMOBJ_CLASS, |
| 60 | length, pobject); |
| 61 | iobj = *pobject; |
| 62 | if (ret) |
| 63 | return ret; |
| 64 | |
| 65 | mutex_lock(&imem->base.mutex); |
| 66 | list_add(&iobj->head, &imem->list); |
| 67 | mutex_unlock(&imem->base.mutex); |
| 68 | return 0; |
| 69 | } |
| 70 | |
| 71 | /****************************************************************************** |
| 72 | * instmem subdev base implementation |
| 73 | *****************************************************************************/ |
| 74 | |
| 75 | static int |
| 76 | nouveau_instmem_alloc(struct nouveau_instmem *imem, |
| 77 | struct nouveau_object *parent, u32 size, u32 align, |
| 78 | struct nouveau_object **pobject) |
| 79 | { |
| 80 | struct nouveau_object *engine = nv_object(imem); |
| 81 | struct nouveau_instmem_impl *impl = (void *)engine->oclass; |
| 82 | struct nouveau_instobj_args args = { .size = size, .align = align }; |
| 83 | return nouveau_object_ctor(parent, engine, impl->instobj, &args, |
| 84 | sizeof(args), pobject); |
| 85 | } |
| 86 | |
| 87 | int |
| 88 | _nouveau_instmem_fini(struct nouveau_object *object, bool suspend) |
| 89 | { |
| 90 | struct nouveau_instmem *imem = (void *)object; |
| 91 | struct nouveau_instobj *iobj; |
| 92 | int i, ret = 0; |
| 93 | |
| 94 | if (suspend) { |
| 95 | mutex_lock(&imem->base.mutex); |
| 96 | |
| 97 | list_for_each_entry(iobj, &imem->list, head) { |
| 98 | iobj->suspend = vmalloc(iobj->size); |
| 99 | if (!iobj->suspend) { |
| 100 | ret = -ENOMEM; |
| 101 | break; |
| 102 | } |
| 103 | |
| 104 | for (i = 0; i < iobj->size; i += 4) |
| 105 | iobj->suspend[i / 4] = nv_ro32(iobj, i); |
| 106 | } |
| 107 | |
| 108 | mutex_unlock(&imem->base.mutex); |
| 109 | |
| 110 | if (ret) |
| 111 | return ret; |
| 112 | } |
| 113 | |
| 114 | return nouveau_subdev_fini(&imem->base, suspend); |
| 115 | } |
| 116 | |
| 117 | int |
| 118 | _nouveau_instmem_init(struct nouveau_object *object) |
| 119 | { |
| 120 | struct nouveau_instmem *imem = (void *)object; |
| 121 | struct nouveau_instobj *iobj; |
| 122 | int ret, i; |
| 123 | |
| 124 | ret = nouveau_subdev_init(&imem->base); |
| 125 | if (ret) |
| 126 | return ret; |
| 127 | |
| 128 | mutex_lock(&imem->base.mutex); |
| 129 | |
| 130 | list_for_each_entry(iobj, &imem->list, head) { |
| 131 | if (iobj->suspend) { |
| 132 | for (i = 0; i < iobj->size; i += 4) |
| 133 | nv_wo32(iobj, i, iobj->suspend[i / 4]); |
| 134 | vfree(iobj->suspend); |
| 135 | iobj->suspend = NULL; |
| 136 | } |
| 137 | } |
| 138 | |
| 139 | mutex_unlock(&imem->base.mutex); |
| 140 | |
| 141 | return 0; |
| 142 | } |
| 143 | |
| 144 | int |
| 145 | nouveau_instmem_create_(struct nouveau_object *parent, |
| 146 | struct nouveau_object *engine, |
| 147 | struct nouveau_oclass *oclass, |
| 148 | int length, void **pobject) |
| 149 | { |
| 150 | struct nouveau_instmem *imem; |
| 151 | int ret; |
| 152 | |
| 153 | ret = nouveau_subdev_create_(parent, engine, oclass, 0, |
| 154 | "INSTMEM" , "instmem" , length, pobject); |
| 155 | imem = *pobject; |
| 156 | if (ret) |
| 157 | return ret; |
| 158 | |
| 159 | INIT_LIST_HEAD(&imem->list); |
| 160 | imem->alloc = nouveau_instmem_alloc; |
| 161 | return 0; |
| 162 | } |
| 163 | |