1 /* 2 * Copyright 2012 Red Hat Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: Ben Skeggs 23 */ 24 #include "priv.h" 25 26 #include <subdev/fb.h> 27 28 struct nv50_instmem_priv { 29 struct nvkm_instmem base; 30 spinlock_t lock; 31 u64 addr; 32 }; 33 34 struct nv50_instobj_priv { 35 struct nvkm_instobj base; 36 struct nvkm_mem *mem; 37 }; 38 39 /****************************************************************************** 40 * instmem object implementation 41 *****************************************************************************/ 42 43 static u32 44 nv50_instobj_rd32(struct nvkm_object *object, u64 offset) 45 { 46 struct nv50_instmem_priv *priv = (void *)nvkm_instmem(object); 47 struct nv50_instobj_priv *node = (void *)object; 48 unsigned long flags; 49 u64 base = (node->mem->offset + offset) & 0xffffff00000ULL; 50 u64 addr = (node->mem->offset + offset) & 0x000000fffffULL; 51 u32 data; 52 53 spin_lock_irqsave(&priv->lock, flags); 54 if (unlikely(priv->addr != base)) { 55 nv_wr32(priv, 0x001700, base >> 16); 56 priv->addr = base; 57 } 58 data = nv_rd32(priv, 0x700000 + addr); 59 spin_unlock_irqrestore(&priv->lock, flags); 60 return data; 61 } 62 63 static void 64 nv50_instobj_wr32(struct nvkm_object *object, u64 offset, u32 data) 65 { 66 struct nv50_instmem_priv *priv = (void *)nvkm_instmem(object); 67 struct nv50_instobj_priv *node = (void *)object; 68 unsigned long flags; 69 u64 base = (node->mem->offset + offset) & 0xffffff00000ULL; 70 u64 addr = (node->mem->offset + offset) & 0x000000fffffULL; 71 72 spin_lock_irqsave(&priv->lock, flags); 73 if (unlikely(priv->addr != base)) { 74 nv_wr32(priv, 0x001700, base >> 16); 75 priv->addr = base; 76 } 77 nv_wr32(priv, 0x700000 + addr, data); 78 spin_unlock_irqrestore(&priv->lock, flags); 79 } 80 81 static void 82 nv50_instobj_dtor(struct nvkm_object *object) 83 { 84 struct nv50_instobj_priv *node = (void *)object; 85 struct nvkm_fb *pfb = nvkm_fb(object); 86 pfb->ram->put(pfb, &node->mem); 87 nvkm_instobj_destroy(&node->base); 88 } 89 90 static int 91 nv50_instobj_ctor(struct nvkm_object *parent, struct nvkm_object *engine, 92 struct nvkm_oclass *oclass, void *data, u32 size, 93 struct nvkm_object **pobject) 94 { 95 struct nvkm_fb *pfb = nvkm_fb(parent); 96 struct nvkm_instobj_args *args = data; 97 struct nv50_instobj_priv *node; 98 int ret; 99 100 args->size = max((args->size + 4095) & ~4095, (u32)4096); 101 args->align = max((args->align + 4095) & ~4095, (u32)4096); 102 103 ret = nvkm_instobj_create(parent, engine, oclass, &node); 104 *pobject = nv_object(node); 105 if (ret) 106 return ret; 107 108 ret = pfb->ram->get(pfb, args->size, args->align, 0, 0x800, &node->mem); 109 if (ret) 110 return ret; 111 112 node->base.addr = node->mem->offset; 113 node->base.size = node->mem->size << 12; 114 node->mem->page_shift = 12; 115 return 0; 116 } 117 118 static struct nvkm_instobj_impl 119 nv50_instobj_oclass = { 120 .base.ofuncs = &(struct nvkm_ofuncs) { 121 .ctor = nv50_instobj_ctor, 122 .dtor = nv50_instobj_dtor, 123 .init = _nvkm_instobj_init, 124 .fini = _nvkm_instobj_fini, 125 .rd32 = nv50_instobj_rd32, 126 .wr32 = nv50_instobj_wr32, 127 }, 128 }; 129 130 /****************************************************************************** 131 * instmem subdev implementation 132 *****************************************************************************/ 133 134 static int 135 nv50_instmem_fini(struct nvkm_object *object, bool suspend) 136 { 137 struct nv50_instmem_priv *priv = (void *)object; 138 priv->addr = ~0ULL; 139 return nvkm_instmem_fini(&priv->base, suspend); 140 } 141 142 static int 143 nv50_instmem_ctor(struct nvkm_object *parent, struct nvkm_object *engine, 144 struct nvkm_oclass *oclass, void *data, u32 size, 145 struct nvkm_object **pobject) 146 { 147 struct nv50_instmem_priv *priv; 148 int ret; 149 150 ret = nvkm_instmem_create(parent, engine, oclass, &priv); 151 *pobject = nv_object(priv); 152 if (ret) 153 return ret; 154 155 spin_lock_init(&priv->lock); 156 return 0; 157 } 158 159 struct nvkm_oclass * 160 nv50_instmem_oclass = &(struct nvkm_instmem_impl) { 161 .base.handle = NV_SUBDEV(INSTMEM, 0x50), 162 .base.ofuncs = &(struct nvkm_ofuncs) { 163 .ctor = nv50_instmem_ctor, 164 .dtor = _nvkm_instmem_dtor, 165 .init = _nvkm_instmem_init, 166 .fini = nv50_instmem_fini, 167 }, 168 .instobj = &nv50_instobj_oclass.base, 169 }.base; 170