drivers/gpu/drm/nouveau/nvkm/subdev/fb/gf100.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 "gf100.h"
  25 #include "ram.h"
  26
  27 #include <core/memory.h>
  28 #include <core/option.h>
  29
  30 extern const u8 gf100_pte_storage_type_map[256];
  31
  32 bool
  33 gf100_fb_memtype_valid(struct nvkm_fb *fb, u32 tile_flags)
  34 {
  35         u8 memtype = (tile_flags & 0x0000ff00) >> 8;
  36         return likely((gf100_pte_storage_type_map[memtype] != 0xff));
  37 }
  38
  39 void
  40 gf100_fb_intr(struct nvkm_fb *base)
  41 {
  42         struct gf100_fb *fb = gf100_fb(base);
  43         struct nvkm_subdev *subdev = &fb->base.subdev;
  44         struct nvkm_device *device = subdev->device;
  45         u32 intr = nvkm_rd32(device, 0x000100);
  46         if (intr & 0x08000000)
  47                 nvkm_debug(subdev, "PFFB intr\n");
  48         if (intr & 0x00002000)
  49                 nvkm_debug(subdev, "PBFB intr\n");
  50 }
  51
  52 int
  53 gf100_fb_oneinit(struct nvkm_fb *fb)
  54 {
  55         struct nvkm_device *device = fb->subdev.device;
  56         int ret, size = 0x1000;
  57
  58         size = nvkm_longopt(device->cfgopt, "MmuDebugBufferSize", size);
  59         size = min(size, 0x1000);
  60
  61         ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, size, 0x1000,
  62                               false, &fb->mmu_rd);
  63         if (ret)
  64                 return ret;
  65
  66         ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, size, 0x1000,
  67                               false, &fb->mmu_wr);
  68         if (ret)
  69                 return ret;
  70
  71         return 0;
  72 }
  73
  74 void
  75 gf100_fb_init_page(struct nvkm_fb *fb)
  76 {
  77         struct nvkm_device *device = fb->subdev.device;
  78         switch (fb->page) {
  79         case 16:
  80                 nvkm_mask(device, 0x100c80, 0x00000001, 0x00000001);
  81                 break;
  82         case 17:
  83         default:
  84                 nvkm_mask(device, 0x100c80, 0x00000001, 0x00000000);
  85                 fb->page = 17;
  86                 break;
  87         }
  88 }
  89
  90 void
  91 gf100_fb_init(struct nvkm_fb *base)
  92 {
  93         struct gf100_fb *fb = gf100_fb(base);
  94         struct nvkm_device *device = fb->base.subdev.device;
  95
  96         if (fb->r100c10_page)
  97                 nvkm_wr32(device, 0x100c10, fb->r100c10 >> 8);
  98 }
  99
 100 void *
 101 gf100_fb_dtor(struct nvkm_fb *base)
 102 {
 103         struct gf100_fb *fb = gf100_fb(base);
 104         struct nvkm_device *device = fb->base.subdev.device;
 105
 106         if (fb->r100c10_page) {
 107                 dma_unmap_page(device->dev, fb->r100c10, PAGE_SIZE,
 108                                DMA_BIDIRECTIONAL);
 109                 __free_page(fb->r100c10_page);
 110         }
 111
 112         return fb;
 113 }
 114
 115 int
 116 gf100_fb_new_(const struct nvkm_fb_func *func, struct nvkm_device *device,
 117               int index, struct nvkm_fb **pfb)
 118 {
 119         struct gf100_fb *fb;
 120
 121         if (!(fb = kzalloc(sizeof(*fb), GFP_KERNEL)))
 122                 return -ENOMEM;
 123         nvkm_fb_ctor(func, device, index, &fb->base);
 124         *pfb = &fb->base;
 125
 126         fb->r100c10_page = alloc_page(GFP_KERNEL | __GFP_ZERO);
 127         if (fb->r100c10_page) {
 128                 fb->r100c10 = dma_map_page(device->dev, fb->r100c10_page, 0,
 129                                            PAGE_SIZE, DMA_BIDIRECTIONAL);
 130                 if (dma_mapping_error(device->dev, fb->r100c10))
 131                         return -EFAULT;
 132         }
 133
 134         return 0;
 135 }
 136
 137 static const struct nvkm_fb_func
 138 gf100_fb = {
 139         .dtor = gf100_fb_dtor,
 140         .oneinit = gf100_fb_oneinit,
 141         .init = gf100_fb_init,
 142         .init_page = gf100_fb_init_page,
 143         .intr = gf100_fb_intr,
 144         .ram_new = gf100_ram_new,
 145         .memtype_valid = gf100_fb_memtype_valid,
 146 };
 147
 148 int
 149 gf100_fb_new(struct nvkm_device *device, int index, struct nvkm_fb **pfb)
 150 {
 151         return gf100_fb_new_(&gf100_fb, device, index, pfb);
 152 }