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 *base)
  54 {
  55         struct gf100_fb *fb = gf100_fb(base);
  56         struct nvkm_device *device = fb->base.subdev.device;
  57         int ret, size = 0x1000;
  58
  59         size = nvkm_longopt(device->cfgopt, "MmuDebugBufferSize", size);
  60         size = min(size, 0x1000);
  61
  62         ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, size, 0x1000,
  63                               true, &fb->base.mmu_rd);
  64         if (ret)
  65                 return ret;
  66
  67         ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, size, 0x1000,
  68                               true, &fb->base.mmu_wr);
  69         if (ret)
  70                 return ret;
  71
  72         fb->r100c10_page = alloc_page(GFP_KERNEL | __GFP_ZERO);
  73         if (fb->r100c10_page) {
  74                 fb->r100c10 = dma_map_page(device->dev, fb->r100c10_page, 0,
  75                                            PAGE_SIZE, DMA_BIDIRECTIONAL);
  76                 if (dma_mapping_error(device->dev, fb->r100c10))
  77                         return -EFAULT;
  78         }
  79
  80         return 0;
  81 }
  82
  83 void
  84 gf100_fb_init_page(struct nvkm_fb *fb)
  85 {
  86         struct nvkm_device *device = fb->subdev.device;
  87         switch (fb->page) {
  88         case 16:
  89                 nvkm_mask(device, 0x100c80, 0x00000001, 0x00000001);
  90                 break;
  91         case 17:
  92         default:
  93                 nvkm_mask(device, 0x100c80, 0x00000001, 0x00000000);
  94                 fb->page = 17;
  95                 break;
  96         }
  97 }
  98
  99 void
 100 gf100_fb_init(struct nvkm_fb *base)
 101 {
 102         struct gf100_fb *fb = gf100_fb(base);
 103         struct nvkm_device *device = fb->base.subdev.device;
 104
 105         if (fb->r100c10_page)
 106                 nvkm_wr32(device, 0x100c10, fb->r100c10 >> 8);
 107 }
 108
 109 void *
 110 gf100_fb_dtor(struct nvkm_fb *base)
 111 {
 112         struct gf100_fb *fb = gf100_fb(base);
 113         struct nvkm_device *device = fb->base.subdev.device;
 114
 115         if (fb->r100c10_page) {
 116                 dma_unmap_page(device->dev, fb->r100c10, PAGE_SIZE,
 117                                DMA_BIDIRECTIONAL);
 118                 __free_page(fb->r100c10_page);
 119         }
 120
 121         return fb;
 122 }
 123
 124 int
 125 gf100_fb_new_(const struct nvkm_fb_func *func, struct nvkm_device *device,
 126               int index, struct nvkm_fb **pfb)
 127 {
 128         struct gf100_fb *fb;
 129
 130         if (!(fb = kzalloc(sizeof(*fb), GFP_KERNEL)))
 131                 return -ENOMEM;
 132         nvkm_fb_ctor(func, device, index, &fb->base);
 133         *pfb = &fb->base;
 134
 135         return 0;
 136 }
 137
 138 static const struct nvkm_fb_func
 139 gf100_fb = {
 140         .dtor = gf100_fb_dtor,
 141         .oneinit = gf100_fb_oneinit,
 142         .init = gf100_fb_init,
 143         .init_page = gf100_fb_init_page,
 144         .intr = gf100_fb_intr,
 145         .ram_new = gf100_ram_new,
 146         .memtype_valid = gf100_fb_memtype_valid,
 147 };
 148
 149 int
 150 gf100_fb_new(struct nvkm_device *device, int index, struct nvkm_fb **pfb)
 151 {
 152         return gf100_fb_new_(&gf100_fb, device, index, pfb);
 153 }