drivers/gpu/drm/nouveau/nvkm/subdev/bar/nv50.c

   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 "nv50.h"
  25
  26 #include <core/gpuobj.h>
  27 #include <subdev/fb.h>
  28 #include <subdev/mmu.h>
  29 #include <subdev/timer.h>
  30
  31 static void
  32 nv50_bar_flush(struct nvkm_bar *base)
  33 {
  34         struct nv50_bar *bar = nv50_bar(base);
  35         struct nvkm_device *device = bar->base.subdev.device;
  36         unsigned long flags;
  37         spin_lock_irqsave(&bar->base.lock, flags);
  38         nvkm_wr32(device, 0x00330c, 0x00000001);
  39         nvkm_msec(device, 2000,
  40                 if (!(nvkm_rd32(device, 0x00330c) & 0x00000002))
  41                         break;
  42         );
  43         spin_unlock_irqrestore(&bar->base.lock, flags);
  44 }
  45
  46 struct nvkm_vmm *
  47 nv50_bar_bar1_vmm(struct nvkm_bar *base)
  48 {
  49         return nv50_bar(base)->bar1_vmm;
  50 }
  51
  52 void
  53 nv50_bar_bar1_wait(struct nvkm_bar *base)
  54 {
  55         nvkm_bar_flush(base);
  56 }
  57
  58 void
  59 nv50_bar_bar1_fini(struct nvkm_bar *bar)
  60 {
  61         nvkm_wr32(bar->subdev.device, 0x001708, 0x00000000);
  62 }
  63
  64 void
  65 nv50_bar_bar1_init(struct nvkm_bar *base)
  66 {
  67         struct nvkm_device *device = base->subdev.device;
  68         struct nv50_bar *bar = nv50_bar(base);
  69         nvkm_wr32(device, 0x001708, 0x80000000 | bar->bar1->node->offset >> 4);
  70 }
  71
  72 struct nvkm_vmm *
  73 nv50_bar_bar2_vmm(struct nvkm_bar *base)
  74 {
  75         return nv50_bar(base)->bar2_vmm;
  76 }
  77
  78 void
  79 nv50_bar_bar2_fini(struct nvkm_bar *bar)
  80 {
  81         nvkm_wr32(bar->subdev.device, 0x00170c, 0x00000000);
  82 }
  83
  84 void
  85 nv50_bar_bar2_init(struct nvkm_bar *base)
  86 {
  87         struct nvkm_device *device = base->subdev.device;
  88         struct nv50_bar *bar = nv50_bar(base);
  89         nvkm_wr32(device, 0x001704, 0x00000000 | bar->mem->addr >> 12);
  90         nvkm_wr32(device, 0x001704, 0x40000000 | bar->mem->addr >> 12);
  91         nvkm_wr32(device, 0x00170c, 0x80000000 | bar->bar2->node->offset >> 4);
  92 }
  93
  94 void
  95 nv50_bar_init(struct nvkm_bar *base)
  96 {
  97         struct nv50_bar *bar = nv50_bar(base);
  98         struct nvkm_device *device = bar->base.subdev.device;
  99         int i;
 100
 101         for (i = 0; i < 8; i++)
 102                 nvkm_wr32(device, 0x001900 + (i * 4), 0x00000000);
 103 }
 104
 105 int
 106 nv50_bar_oneinit(struct nvkm_bar *base)
 107 {
 108         struct nv50_bar *bar = nv50_bar(base);
 109         struct nvkm_device *device = bar->base.subdev.device;
 110         static struct lock_class_key bar1_lock;
 111         static struct lock_class_key bar2_lock;
 112         u64 start, limit, size;
 113         int ret;
 114
 115         ret = nvkm_gpuobj_new(device, 0x20000, 0, false, NULL, &bar->mem);
 116         if (ret)
 117                 return ret;
 118
 119         ret = nvkm_gpuobj_new(device, bar->pgd_addr, 0, false, bar->mem,
 120                               &bar->pad);
 121         if (ret)
 122                 return ret;
 123
 124         ret = nvkm_gpuobj_new(device, 0x4000, 0, false, bar->mem, &bar->pgd);
 125         if (ret)
 126                 return ret;
 127
 128         /* BAR2 */
 129         start = 0x0100000000ULL;
 130         size = device->func->resource_size(device, 3);
 131         if (!size)
 132                 return -ENOMEM;
 133         limit = start + size;
 134
 135         ret = nvkm_vmm_new(device, start, limit-- - start, NULL, 0,
 136                            &bar2_lock, "bar2", &bar->bar2_vmm);
 137         if (ret)
 138                 return ret;
 139
 140         atomic_inc(&bar->bar2_vmm->engref[NVKM_SUBDEV_BAR]);
 141         bar->bar2_vmm->debug = bar->base.subdev.debug;
 142
 143         ret = nvkm_vmm_boot(bar->bar2_vmm);
 144         if (ret)
 145                 return ret;
 146
 147         ret = nvkm_vmm_join(bar->bar2_vmm, bar->mem->memory);
 148         if (ret)
 149                 return ret;
 150
 151         ret = nvkm_gpuobj_new(device, 24, 16, false, bar->mem, &bar->bar2);
 152         if (ret)
 153                 return ret;
 154
 155         nvkm_kmap(bar->bar2);
 156         nvkm_wo32(bar->bar2, 0x00, 0x7fc00000);
 157         nvkm_wo32(bar->bar2, 0x04, lower_32_bits(limit));
 158         nvkm_wo32(bar->bar2, 0x08, lower_32_bits(start));
 159         nvkm_wo32(bar->bar2, 0x0c, upper_32_bits(limit) << 24 |
 160                                    upper_32_bits(start));
 161         nvkm_wo32(bar->bar2, 0x10, 0x00000000);
 162         nvkm_wo32(bar->bar2, 0x14, 0x00000000);
 163         nvkm_done(bar->bar2);
 164
 165         bar->base.subdev.oneinit = true;
 166         nvkm_bar_bar2_init(device);
 167
 168         /* BAR1 */
 169         start = 0x0000000000ULL;
 170         size = device->func->resource_size(device, 1);
 171         if (!size)
 172                 return -ENOMEM;
 173         limit = start + size;
 174
 175         ret = nvkm_vmm_new(device, start, limit-- - start, NULL, 0,
 176                            &bar1_lock, "bar1", &bar->bar1_vmm);
 177         if (ret)
 178                 return ret;
 179
 180         atomic_inc(&bar->bar1_vmm->engref[NVKM_SUBDEV_BAR]);
 181         bar->bar1_vmm->debug = bar->base.subdev.debug;
 182
 183         ret = nvkm_vmm_join(bar->bar1_vmm, bar->mem->memory);
 184         if (ret)
 185                 return ret;
 186
 187         ret = nvkm_gpuobj_new(device, 24, 16, false, bar->mem, &bar->bar1);
 188         if (ret)
 189                 return ret;
 190
 191         nvkm_kmap(bar->bar1);
 192         nvkm_wo32(bar->bar1, 0x00, 0x7fc00000);
 193         nvkm_wo32(bar->bar1, 0x04, lower_32_bits(limit));
 194         nvkm_wo32(bar->bar1, 0x08, lower_32_bits(start));
 195         nvkm_wo32(bar->bar1, 0x0c, upper_32_bits(limit) << 24 |
 196                                    upper_32_bits(start));
 197         nvkm_wo32(bar->bar1, 0x10, 0x00000000);
 198         nvkm_wo32(bar->bar1, 0x14, 0x00000000);
 199         nvkm_done(bar->bar1);
 200         return 0;
 201 }
 202
 203 void *
 204 nv50_bar_dtor(struct nvkm_bar *base)
 205 {
 206         struct nv50_bar *bar = nv50_bar(base);
 207         if (bar->mem) {
 208                 nvkm_gpuobj_del(&bar->bar1);
 209                 nvkm_vmm_part(bar->bar1_vmm, bar->mem->memory);
 210                 nvkm_vmm_unref(&bar->bar1_vmm);
 211                 nvkm_gpuobj_del(&bar->bar2);
 212                 nvkm_vmm_part(bar->bar2_vmm, bar->mem->memory);
 213                 nvkm_vmm_unref(&bar->bar2_vmm);
 214                 nvkm_gpuobj_del(&bar->pgd);
 215                 nvkm_gpuobj_del(&bar->pad);
 216                 nvkm_gpuobj_del(&bar->mem);
 217         }
 218         return bar;
 219 }
 220
 221 int
 222 nv50_bar_new_(const struct nvkm_bar_func *func, struct nvkm_device *device,
 223               int index, u32 pgd_addr, struct nvkm_bar **pbar)
 224 {
 225         struct nv50_bar *bar;
 226         if (!(bar = kzalloc(sizeof(*bar), GFP_KERNEL)))
 227                 return -ENOMEM;
 228         nvkm_bar_ctor(func, device, index, &bar->base);
 229         bar->pgd_addr = pgd_addr;
 230         *pbar = &bar->base;
 231         return 0;
 232 }
 233
 234 static const struct nvkm_bar_func
 235 nv50_bar_func = {
 236         .dtor = nv50_bar_dtor,
 237         .oneinit = nv50_bar_oneinit,
 238         .init = nv50_bar_init,
 239         .bar1.init = nv50_bar_bar1_init,
 240         .bar1.fini = nv50_bar_bar1_fini,
 241         .bar1.wait = nv50_bar_bar1_wait,
 242         .bar1.vmm = nv50_bar_bar1_vmm,
 243         .bar2.init = nv50_bar_bar2_init,
 244         .bar2.fini = nv50_bar_bar2_fini,
 245         .bar2.wait = nv50_bar_bar1_wait,
 246         .bar2.vmm = nv50_bar_bar2_vmm,
 247         .flush = nv50_bar_flush,
 248 };
 249
 250 int
 251 nv50_bar_new(struct nvkm_device *device, int index, struct nvkm_bar **pbar)
 252 {
 253         return nv50_bar_new_(&nv50_bar_func, device, index, 0x1400, pbar);
 254 }