| 1 | /* $NetBSD: nouveau_subdev_instmem_nv50.c,v 1.1.1.1 2014/08/06 12:36:31 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_nv50.c,v 1.1.1.1 2014/08/06 12:36:31 riastradh Exp $" ); |
| 29 | |
| 30 | #include <subdev/fb.h> |
| 31 | #include <core/mm.h> |
| 32 | |
| 33 | #include "priv.h" |
| 34 | |
| 35 | struct nv50_instmem_priv { |
| 36 | struct nouveau_instmem base; |
| 37 | spinlock_t lock; |
| 38 | u64 addr; |
| 39 | }; |
| 40 | |
| 41 | struct nv50_instobj_priv { |
| 42 | struct nouveau_instobj base; |
| 43 | struct nouveau_mem *mem; |
| 44 | }; |
| 45 | |
| 46 | /****************************************************************************** |
| 47 | * instmem object implementation |
| 48 | *****************************************************************************/ |
| 49 | |
| 50 | static u32 |
| 51 | nv50_instobj_rd32(struct nouveau_object *object, u64 offset) |
| 52 | { |
| 53 | struct nv50_instmem_priv *priv = (void *)object->engine; |
| 54 | struct nv50_instobj_priv *node = (void *)object; |
| 55 | unsigned long flags; |
| 56 | u64 base = (node->mem->offset + offset) & 0xffffff00000ULL; |
| 57 | u64 addr = (node->mem->offset + offset) & 0x000000fffffULL; |
| 58 | u32 data; |
| 59 | |
| 60 | spin_lock_irqsave(&priv->lock, flags); |
| 61 | if (unlikely(priv->addr != base)) { |
| 62 | nv_wr32(priv, 0x001700, base >> 16); |
| 63 | priv->addr = base; |
| 64 | } |
| 65 | data = nv_rd32(priv, 0x700000 + addr); |
| 66 | spin_unlock_irqrestore(&priv->lock, flags); |
| 67 | return data; |
| 68 | } |
| 69 | |
| 70 | static void |
| 71 | nv50_instobj_wr32(struct nouveau_object *object, u64 offset, u32 data) |
| 72 | { |
| 73 | struct nv50_instmem_priv *priv = (void *)object->engine; |
| 74 | struct nv50_instobj_priv *node = (void *)object; |
| 75 | unsigned long flags; |
| 76 | u64 base = (node->mem->offset + offset) & 0xffffff00000ULL; |
| 77 | u64 addr = (node->mem->offset + offset) & 0x000000fffffULL; |
| 78 | |
| 79 | spin_lock_irqsave(&priv->lock, flags); |
| 80 | if (unlikely(priv->addr != base)) { |
| 81 | nv_wr32(priv, 0x001700, base >> 16); |
| 82 | priv->addr = base; |
| 83 | } |
| 84 | nv_wr32(priv, 0x700000 + addr, data); |
| 85 | spin_unlock_irqrestore(&priv->lock, flags); |
| 86 | } |
| 87 | |
| 88 | static void |
| 89 | nv50_instobj_dtor(struct nouveau_object *object) |
| 90 | { |
| 91 | struct nv50_instobj_priv *node = (void *)object; |
| 92 | struct nouveau_fb *pfb = nouveau_fb(object); |
| 93 | pfb->ram->put(pfb, &node->mem); |
| 94 | nouveau_instobj_destroy(&node->base); |
| 95 | } |
| 96 | |
| 97 | static int |
| 98 | nv50_instobj_ctor(struct nouveau_object *parent, struct nouveau_object *engine, |
| 99 | struct nouveau_oclass *oclass, void *data, u32 size, |
| 100 | struct nouveau_object **pobject) |
| 101 | { |
| 102 | struct nouveau_fb *pfb = nouveau_fb(parent); |
| 103 | struct nouveau_instobj_args *args = data; |
| 104 | struct nv50_instobj_priv *node; |
| 105 | int ret; |
| 106 | |
| 107 | args->size = max((args->size + 4095) & ~4095, (u32)4096); |
| 108 | args->align = max((args->align + 4095) & ~4095, (u32)4096); |
| 109 | |
| 110 | ret = nouveau_instobj_create(parent, engine, oclass, &node); |
| 111 | *pobject = nv_object(node); |
| 112 | if (ret) |
| 113 | return ret; |
| 114 | |
| 115 | ret = pfb->ram->get(pfb, args->size, args->align, 0, 0x800, &node->mem); |
| 116 | if (ret) |
| 117 | return ret; |
| 118 | |
| 119 | node->base.addr = node->mem->offset; |
| 120 | node->base.size = node->mem->size << 12; |
| 121 | node->mem->page_shift = 12; |
| 122 | return 0; |
| 123 | } |
| 124 | |
| 125 | static struct nouveau_instobj_impl |
| 126 | nv50_instobj_oclass = { |
| 127 | .base.ofuncs = &(struct nouveau_ofuncs) { |
| 128 | .ctor = nv50_instobj_ctor, |
| 129 | .dtor = nv50_instobj_dtor, |
| 130 | .init = _nouveau_instobj_init, |
| 131 | .fini = _nouveau_instobj_fini, |
| 132 | .rd32 = nv50_instobj_rd32, |
| 133 | .wr32 = nv50_instobj_wr32, |
| 134 | }, |
| 135 | }; |
| 136 | |
| 137 | /****************************************************************************** |
| 138 | * instmem subdev implementation |
| 139 | *****************************************************************************/ |
| 140 | |
| 141 | static int |
| 142 | nv50_instmem_fini(struct nouveau_object *object, bool suspend) |
| 143 | { |
| 144 | struct nv50_instmem_priv *priv = (void *)object; |
| 145 | priv->addr = ~0ULL; |
| 146 | return nouveau_instmem_fini(&priv->base, suspend); |
| 147 | } |
| 148 | |
| 149 | static int |
| 150 | nv50_instmem_ctor(struct nouveau_object *parent, struct nouveau_object *engine, |
| 151 | struct nouveau_oclass *oclass, void *data, u32 size, |
| 152 | struct nouveau_object **pobject) |
| 153 | { |
| 154 | struct nv50_instmem_priv *priv; |
| 155 | int ret; |
| 156 | |
| 157 | ret = nouveau_instmem_create(parent, engine, oclass, &priv); |
| 158 | *pobject = nv_object(priv); |
| 159 | if (ret) |
| 160 | return ret; |
| 161 | |
| 162 | spin_lock_init(&priv->lock); |
| 163 | return 0; |
| 164 | } |
| 165 | |
| 166 | struct nouveau_oclass * |
| 167 | nv50_instmem_oclass = &(struct nouveau_instmem_impl) { |
| 168 | .base.handle = NV_SUBDEV(INSTMEM, 0x50), |
| 169 | .base.ofuncs = &(struct nouveau_ofuncs) { |
| 170 | .ctor = nv50_instmem_ctor, |
| 171 | .dtor = _nouveau_instmem_dtor, |
| 172 | .init = _nouveau_instmem_init, |
| 173 | .fini = nv50_instmem_fini, |
| 174 | }, |
| 175 | .instobj = &nv50_instobj_oclass.base, |
| 176 | }.base; |
| 177 | |