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 "gf100.h" 25 26 #include <core/gpuobj.h> 27 #include <subdev/fb.h> 28 #include <subdev/mmu.h> 29 30 static struct nvkm_vm * 31 gf100_bar_kmap(struct nvkm_bar *base) 32 { 33 return gf100_bar(base)->bar[0].vm; 34 } 35 36 int 37 gf100_bar_umap(struct nvkm_bar *base, u64 size, int type, struct nvkm_vma *vma) 38 { 39 struct gf100_bar *bar = gf100_bar(base); 40 return nvkm_vm_get(bar->bar[1].vm, size, type, NV_MEM_ACCESS_RW, vma); 41 } 42 43 static int 44 gf100_bar_ctor_vm(struct gf100_bar *bar, struct gf100_bar_vm *bar_vm, 45 struct lock_class_key *key, int bar_nr) 46 { 47 struct nvkm_device *device = bar->base.subdev.device; 48 struct nvkm_vm *vm; 49 resource_size_t bar_len; 50 int ret; 51 52 ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, 0x1000, 0, false, 53 &bar_vm->mem); 54 if (ret) 55 return ret; 56 57 ret = nvkm_gpuobj_new(device, 0x8000, 0, false, NULL, &bar_vm->pgd); 58 if (ret) 59 return ret; 60 61 bar_len = device->func->resource_size(device, bar_nr); 62 63 ret = nvkm_vm_new(device, 0, bar_len, 0, key, &vm); 64 if (ret) 65 return ret; 66 67 atomic_inc(&vm->engref[NVKM_SUBDEV_BAR]); 68 69 /* 70 * Bootstrap page table lookup. 71 */ 72 if (bar_nr == 3) { 73 ret = nvkm_vm_boot(vm, bar_len); 74 if (ret) { 75 nvkm_vm_ref(NULL, &vm, NULL); 76 return ret; 77 } 78 } 79 80 ret = nvkm_vm_ref(vm, &bar_vm->vm, bar_vm->pgd); 81 nvkm_vm_ref(NULL, &vm, NULL); 82 if (ret) 83 return ret; 84 85 nvkm_kmap(bar_vm->mem); 86 nvkm_wo32(bar_vm->mem, 0x0200, lower_32_bits(bar_vm->pgd->addr)); 87 nvkm_wo32(bar_vm->mem, 0x0204, upper_32_bits(bar_vm->pgd->addr)); 88 nvkm_wo32(bar_vm->mem, 0x0208, lower_32_bits(bar_len - 1)); 89 nvkm_wo32(bar_vm->mem, 0x020c, upper_32_bits(bar_len - 1)); 90 nvkm_done(bar_vm->mem); 91 return 0; 92 } 93 94 int 95 gf100_bar_oneinit(struct nvkm_bar *base) 96 { 97 static struct lock_class_key bar1_lock; 98 static struct lock_class_key bar3_lock; 99 struct gf100_bar *bar = gf100_bar(base); 100 int ret; 101 102 /* BAR3 */ 103 if (bar->base.func->kmap) { 104 ret = gf100_bar_ctor_vm(bar, &bar->bar[0], &bar3_lock, 3); 105 if (ret) 106 return ret; 107 } 108 109 /* BAR1 */ 110 ret = gf100_bar_ctor_vm(bar, &bar->bar[1], &bar1_lock, 1); 111 if (ret) 112 return ret; 113 114 return 0; 115 } 116 117 int 118 gf100_bar_init(struct nvkm_bar *base) 119 { 120 struct gf100_bar *bar = gf100_bar(base); 121 struct nvkm_device *device = bar->base.subdev.device; 122 u32 addr; 123 124 nvkm_mask(device, 0x000200, 0x00000100, 0x00000000); 125 nvkm_mask(device, 0x000200, 0x00000100, 0x00000100); 126 127 addr = nvkm_memory_addr(bar->bar[1].mem) >> 12; 128 nvkm_wr32(device, 0x001704, 0x80000000 | addr); 129 130 if (bar->bar[0].mem) { 131 addr = nvkm_memory_addr(bar->bar[0].mem) >> 12; 132 nvkm_wr32(device, 0x001714, 0xc0000000 | addr); 133 } 134 135 return 0; 136 } 137 138 void * 139 gf100_bar_dtor(struct nvkm_bar *base) 140 { 141 struct gf100_bar *bar = gf100_bar(base); 142 143 nvkm_vm_ref(NULL, &bar->bar[1].vm, bar->bar[1].pgd); 144 nvkm_gpuobj_del(&bar->bar[1].pgd); 145 nvkm_memory_del(&bar->bar[1].mem); 146 147 if (bar->bar[0].vm) { 148 nvkm_memory_del(&bar->bar[0].vm->pgt[0].mem[0]); 149 nvkm_vm_ref(NULL, &bar->bar[0].vm, bar->bar[0].pgd); 150 } 151 nvkm_gpuobj_del(&bar->bar[0].pgd); 152 nvkm_memory_del(&bar->bar[0].mem); 153 return bar; 154 } 155 156 int 157 gf100_bar_new_(const struct nvkm_bar_func *func, struct nvkm_device *device, 158 int index, struct nvkm_bar **pbar) 159 { 160 struct gf100_bar *bar; 161 if (!(bar = kzalloc(sizeof(*bar), GFP_KERNEL))) 162 return -ENOMEM; 163 nvkm_bar_ctor(func, device, index, &bar->base); 164 *pbar = &bar->base; 165 return 0; 166 } 167 168 static const struct nvkm_bar_func 169 gf100_bar_func = { 170 .dtor = gf100_bar_dtor, 171 .oneinit = gf100_bar_oneinit, 172 .init = gf100_bar_init, 173 .kmap = gf100_bar_kmap, 174 .umap = gf100_bar_umap, 175 .flush = g84_bar_flush, 176 }; 177 178 int 179 gf100_bar_new(struct nvkm_device *device, int index, struct nvkm_bar **pbar) 180 { 181 return gf100_bar_new_(&gf100_bar_func, device, index, pbar); 182 } 183