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 <core/device.h> 27 #include <subdev/fb.h> 28 #include <subdev/mmu.h> 29 30 struct nvkm_barobj { 31 struct nvkm_object base; 32 struct nvkm_vma vma; 33 void __iomem *iomem; 34 }; 35 36 static int 37 nvkm_barobj_ctor(struct nvkm_object *parent, struct nvkm_object *engine, 38 struct nvkm_oclass *oclass, void *data, u32 size, 39 struct nvkm_object **pobject) 40 { 41 struct nvkm_device *device = nv_device(parent); 42 struct nvkm_bar *bar = nvkm_bar(device); 43 struct nvkm_mem *mem = data; 44 struct nvkm_barobj *barobj; 45 int ret; 46 47 ret = nvkm_object_create(parent, engine, oclass, 0, &barobj); 48 *pobject = nv_object(barobj); 49 if (ret) 50 return ret; 51 52 ret = bar->kmap(bar, mem, NV_MEM_ACCESS_RW, &barobj->vma); 53 if (ret) 54 return ret; 55 56 barobj->iomem = ioremap(nv_device_resource_start(device, 3) + 57 (u32)barobj->vma.offset, mem->size << 12); 58 if (!barobj->iomem) { 59 nv_warn(bar, "PRAMIN ioremap failed\n"); 60 return -ENOMEM; 61 } 62 63 return 0; 64 } 65 66 static void 67 nvkm_barobj_dtor(struct nvkm_object *object) 68 { 69 struct nvkm_bar *bar = nvkm_bar(object); 70 struct nvkm_barobj *barobj = (void *)object; 71 if (barobj->vma.node) { 72 if (barobj->iomem) 73 iounmap(barobj->iomem); 74 bar->unmap(bar, &barobj->vma); 75 } 76 nvkm_object_destroy(&barobj->base); 77 } 78 79 static u32 80 nvkm_barobj_rd32(struct nvkm_object *object, u64 addr) 81 { 82 struct nvkm_barobj *barobj = (void *)object; 83 return ioread32_native(barobj->iomem + addr); 84 } 85 86 static void 87 nvkm_barobj_wr32(struct nvkm_object *object, u64 addr, u32 data) 88 { 89 struct nvkm_barobj *barobj = (void *)object; 90 iowrite32_native(data, barobj->iomem + addr); 91 } 92 93 static struct nvkm_oclass 94 nvkm_barobj_oclass = { 95 .ofuncs = &(struct nvkm_ofuncs) { 96 .ctor = nvkm_barobj_ctor, 97 .dtor = nvkm_barobj_dtor, 98 .init = nvkm_object_init, 99 .fini = nvkm_object_fini, 100 .rd32 = nvkm_barobj_rd32, 101 .wr32 = nvkm_barobj_wr32, 102 }, 103 }; 104 105 int 106 nvkm_bar_alloc(struct nvkm_bar *bar, struct nvkm_object *parent, 107 struct nvkm_mem *mem, struct nvkm_object **pobject) 108 { 109 struct nvkm_object *gpuobj; 110 int ret = nvkm_object_ctor(parent, &parent->engine->subdev.object, 111 &nvkm_barobj_oclass, mem, 0, &gpuobj); 112 if (ret == 0) 113 *pobject = gpuobj; 114 return ret; 115 } 116 117 int 118 nvkm_bar_create_(struct nvkm_object *parent, struct nvkm_object *engine, 119 struct nvkm_oclass *oclass, int length, void **pobject) 120 { 121 struct nvkm_bar *bar; 122 int ret; 123 124 ret = nvkm_subdev_create_(parent, engine, oclass, 0, "BARCTL", 125 "bar", length, pobject); 126 bar = *pobject; 127 if (ret) 128 return ret; 129 130 return 0; 131 } 132 133 void 134 nvkm_bar_destroy(struct nvkm_bar *bar) 135 { 136 nvkm_subdev_destroy(&bar->base); 137 } 138 139 void 140 _nvkm_bar_dtor(struct nvkm_object *object) 141 { 142 struct nvkm_bar *bar = (void *)object; 143 nvkm_bar_destroy(bar); 144 } 145