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 { 29 struct nvkm_instmem base; 30 spinlock_t lock; 31 u64 addr; 32 }; 33 34 struct nv50_instobj { 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 *imem = (void *)nvkm_instmem(object); 47 struct nv50_instobj *node = (void *)object; 48 struct nvkm_device *device = imem->base.subdev.device; 49 unsigned long flags; 50 u64 base = (node->mem->offset + offset) & 0xffffff00000ULL; 51 u64 addr = (node->mem->offset + offset) & 0x000000fffffULL; 52 u32 data; 53 54 spin_lock_irqsave(&imem->lock, flags); 55 if (unlikely(imem->addr != base)) { 56 nvkm_wr32(device, 0x001700, base >> 16); 57 imem->addr = base; 58 } 59 data = nvkm_rd32(device, 0x700000 + addr); 60 spin_unlock_irqrestore(&imem->lock, flags); 61 return data; 62 } 63 64 static void 65 nv50_instobj_wr32(struct nvkm_object *object, u64 offset, u32 data) 66 { 67 struct nv50_instmem *imem = (void *)nvkm_instmem(object); 68 struct nv50_instobj *node = (void *)object; 69 struct nvkm_device *device = imem->base.subdev.device; 70 unsigned long flags; 71 u64 base = (node->mem->offset + offset) & 0xffffff00000ULL; 72 u64 addr = (node->mem->offset + offset) & 0x000000fffffULL; 73 74 spin_lock_irqsave(&imem->lock, flags); 75 if (unlikely(imem->addr != base)) { 76 nvkm_wr32(device, 0x001700, base >> 16); 77 imem->addr = base; 78 } 79 nvkm_wr32(device, 0x700000 + addr, data); 80 spin_unlock_irqrestore(&imem->lock, flags); 81 } 82 83 static void 84 nv50_instobj_dtor(struct nvkm_object *object) 85 { 86 struct nv50_instobj *node = (void *)object; 87 struct nvkm_fb *fb = nvkm_fb(object); 88 fb->ram->put(fb, &node->mem); 89 nvkm_instobj_destroy(&node->base); 90 } 91 92 static int 93 nv50_instobj_ctor(struct nvkm_object *parent, struct nvkm_object *engine, 94 struct nvkm_oclass *oclass, void *data, u32 size, 95 struct nvkm_object **pobject) 96 { 97 struct nvkm_fb *fb = nvkm_fb(parent); 98 struct nvkm_instobj_args *args = data; 99 struct nv50_instobj *node; 100 int ret; 101 102 args->size = max((args->size + 4095) & ~4095, (u32)4096); 103 args->align = max((args->align + 4095) & ~4095, (u32)4096); 104 105 ret = nvkm_instobj_create(parent, engine, oclass, &node); 106 *pobject = nv_object(node); 107 if (ret) 108 return ret; 109 110 ret = fb->ram->get(fb, args->size, args->align, 0, 0x800, &node->mem); 111 if (ret) 112 return ret; 113 114 node->base.addr = node->mem->offset; 115 node->base.size = node->mem->size << 12; 116 node->mem->page_shift = 12; 117 return 0; 118 } 119 120 static struct nvkm_instobj_impl 121 nv50_instobj_oclass = { 122 .base.ofuncs = &(struct nvkm_ofuncs) { 123 .ctor = nv50_instobj_ctor, 124 .dtor = nv50_instobj_dtor, 125 .init = _nvkm_instobj_init, 126 .fini = _nvkm_instobj_fini, 127 .rd32 = nv50_instobj_rd32, 128 .wr32 = nv50_instobj_wr32, 129 }, 130 }; 131 132 /****************************************************************************** 133 * instmem subdev implementation 134 *****************************************************************************/ 135 136 static int 137 nv50_instmem_fini(struct nvkm_object *object, bool suspend) 138 { 139 struct nv50_instmem *imem = (void *)object; 140 imem->addr = ~0ULL; 141 return nvkm_instmem_fini(&imem->base, suspend); 142 } 143 144 static int 145 nv50_instmem_ctor(struct nvkm_object *parent, struct nvkm_object *engine, 146 struct nvkm_oclass *oclass, void *data, u32 size, 147 struct nvkm_object **pobject) 148 { 149 struct nv50_instmem *imem; 150 int ret; 151 152 ret = nvkm_instmem_create(parent, engine, oclass, &imem); 153 *pobject = nv_object(imem); 154 if (ret) 155 return ret; 156 157 spin_lock_init(&imem->lock); 158 return 0; 159 } 160 161 struct nvkm_oclass * 162 nv50_instmem_oclass = &(struct nvkm_instmem_impl) { 163 .base.handle = NV_SUBDEV(INSTMEM, 0x50), 164 .base.ofuncs = &(struct nvkm_ofuncs) { 165 .ctor = nv50_instmem_ctor, 166 .dtor = _nvkm_instmem_dtor, 167 .init = _nvkm_instmem_init, 168 .fini = nv50_instmem_fini, 169 }, 170 .instobj = &nv50_instobj_oclass.base, 171 }.base; 172