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