197 lines · c
1/*2 * Copyright 2012 Red Hat Inc.3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice shall be included in12 * all copies or substantial portions of the Software.13 *14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR18 * 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 OR20 * OTHER DEALINGS IN THE SOFTWARE.21 *22 * Authors: Ben Skeggs23 */24#include "gf100.h"25 26#include <core/memory.h>27#include <core/option.h>28#include <subdev/fb.h>29#include <subdev/mmu.h>30 31struct nvkm_vmm *32gf100_bar_bar1_vmm(struct nvkm_bar *base)33{34 return gf100_bar(base)->bar[1].vmm;35}36 37void38gf100_bar_bar1_wait(struct nvkm_bar *base)39{40 /* NFI why it's twice. */41 nvkm_bar_flush(base);42 nvkm_bar_flush(base);43}44 45void46gf100_bar_bar1_fini(struct nvkm_bar *bar)47{48 nvkm_mask(bar->subdev.device, 0x001704, 0x80000000, 0x00000000);49}50 51void52gf100_bar_bar1_init(struct nvkm_bar *base)53{54 struct nvkm_device *device = base->subdev.device;55 struct gf100_bar *bar = gf100_bar(base);56 const u32 addr = nvkm_memory_addr(bar->bar[1].inst) >> 12;57 nvkm_wr32(device, 0x001704, 0x80000000 | addr);58}59 60struct nvkm_vmm *61gf100_bar_bar2_vmm(struct nvkm_bar *base)62{63 return gf100_bar(base)->bar[0].vmm;64}65 66void67gf100_bar_bar2_fini(struct nvkm_bar *bar)68{69 nvkm_mask(bar->subdev.device, 0x001714, 0x80000000, 0x00000000);70}71 72void73gf100_bar_bar2_init(struct nvkm_bar *base)74{75 struct nvkm_device *device = base->subdev.device;76 struct gf100_bar *bar = gf100_bar(base);77 u32 addr = nvkm_memory_addr(bar->bar[0].inst) >> 12;78 if (bar->bar2_halve)79 addr |= 0x40000000;80 nvkm_wr32(device, 0x001714, 0x80000000 | addr);81}82 83static int84gf100_bar_oneinit_bar(struct gf100_bar *bar, struct gf100_barN *bar_vm,85 struct lock_class_key *key, int bar_nr)86{87 struct nvkm_device *device = bar->base.subdev.device;88 resource_size_t bar_len;89 int ret;90 91 ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, 0x1000, 0, false,92 &bar_vm->inst);93 if (ret)94 return ret;95 96 bar_len = device->func->resource_size(device, bar_nr);97 if (!bar_len)98 return -ENOMEM;99 if (bar_nr == 3 && bar->bar2_halve)100 bar_len >>= 1;101 102 ret = nvkm_vmm_new(device, 0, bar_len, NULL, 0, key,103 (bar_nr == 3) ? "bar2" : "bar1", &bar_vm->vmm);104 if (ret)105 return ret;106 107 atomic_inc(&bar_vm->vmm->engref[NVKM_SUBDEV_BAR]);108 bar_vm->vmm->debug = bar->base.subdev.debug;109 110 /*111 * Bootstrap page table lookup.112 */113 if (bar_nr == 3) {114 ret = nvkm_vmm_boot(bar_vm->vmm);115 if (ret)116 return ret;117 }118 119 return nvkm_vmm_join(bar_vm->vmm, bar_vm->inst);120}121 122int123gf100_bar_oneinit(struct nvkm_bar *base)124{125 static struct lock_class_key bar1_lock;126 static struct lock_class_key bar2_lock;127 struct gf100_bar *bar = gf100_bar(base);128 int ret;129 130 /* BAR2 */131 if (bar->base.func->bar2.init) {132 ret = gf100_bar_oneinit_bar(bar, &bar->bar[0], &bar2_lock, 3);133 if (ret)134 return ret;135 136 bar->base.subdev.oneinit = true;137 nvkm_bar_bar2_init(bar->base.subdev.device);138 }139 140 /* BAR1 */141 ret = gf100_bar_oneinit_bar(bar, &bar->bar[1], &bar1_lock, 1);142 if (ret)143 return ret;144 145 return 0;146}147 148void *149gf100_bar_dtor(struct nvkm_bar *base)150{151 struct gf100_bar *bar = gf100_bar(base);152 153 nvkm_vmm_part(bar->bar[1].vmm, bar->bar[1].inst);154 nvkm_vmm_unref(&bar->bar[1].vmm);155 nvkm_memory_unref(&bar->bar[1].inst);156 157 nvkm_vmm_part(bar->bar[0].vmm, bar->bar[0].inst);158 nvkm_vmm_unref(&bar->bar[0].vmm);159 nvkm_memory_unref(&bar->bar[0].inst);160 return bar;161}162 163int164gf100_bar_new_(const struct nvkm_bar_func *func, struct nvkm_device *device,165 enum nvkm_subdev_type type, int inst, struct nvkm_bar **pbar)166{167 struct gf100_bar *bar;168 if (!(bar = kzalloc(sizeof(*bar), GFP_KERNEL)))169 return -ENOMEM;170 nvkm_bar_ctor(func, device, type, inst, &bar->base);171 bar->bar2_halve = nvkm_boolopt(device->cfgopt, "NvBar2Halve", false);172 *pbar = &bar->base;173 return 0;174}175 176static const struct nvkm_bar_func177gf100_bar_func = {178 .dtor = gf100_bar_dtor,179 .oneinit = gf100_bar_oneinit,180 .bar1.init = gf100_bar_bar1_init,181 .bar1.fini = gf100_bar_bar1_fini,182 .bar1.wait = gf100_bar_bar1_wait,183 .bar1.vmm = gf100_bar_bar1_vmm,184 .bar2.init = gf100_bar_bar2_init,185 .bar2.fini = gf100_bar_bar2_fini,186 .bar2.wait = gf100_bar_bar1_wait,187 .bar2.vmm = gf100_bar_bar2_vmm,188 .flush = g84_bar_flush,189};190 191int192gf100_bar_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,193 struct nvkm_bar **pbar)194{195 return gf100_bar_new_(&gf100_bar_func, device, type, inst, pbar);196}197