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 #include <subdev/therm.h>
  30
  31 void
  32 gf100_fb_intr(struct nvkm_fb *base)
  33 {
  34         struct gf100_fb *fb = gf100_fb(base);
  35         struct nvkm_subdev *subdev = &fb->base.subdev;
  36         struct nvkm_device *device = subdev->device;
  37         u32 intr = nvkm_rd32(device, 0x000100);
  38         if (intr & 0x08000000)
  39                 nvkm_debug(subdev, "PFFB intr\n");
  40         if (intr & 0x00002000)
  41                 nvkm_debug(subdev, "PBFB intr\n");
  42 }
  43
  44 int
  45 gf100_fb_oneinit(struct nvkm_fb *base)
  46 {
  47         struct gf100_fb *fb = gf100_fb(base);
  48         struct nvkm_device *device = fb->base.subdev.device;
  49         int ret, size = 1 << (fb->base.page ? fb->base.page : 17);
  50
  51         size = nvkm_longopt(device->cfgopt, "MmuDebugBufferSize", size);
  52         size = max(size, 0x1000);
  53
  54         ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, size, 0x1000,
  55                               true, &fb->base.mmu_rd);
  56         if (ret)
  57                 return ret;
  58
  59         ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, size, 0x1000,
  60                               true, &fb->base.mmu_wr);
  61         if (ret)
  62                 return ret;
  63
  64         fb->r100c10_page = alloc_page(GFP_KERNEL | __GFP_ZERO);
  65         if (fb->r100c10_page) {
  66                 fb->r100c10 = dma_map_page(device->dev, fb->r100c10_page, 0,
  67                                            PAGE_SIZE, DMA_BIDIRECTIONAL);
  68                 if (dma_mapping_error(device->dev, fb->r100c10))
  69                         return -EFAULT;
  70         }
  71
  72         return 0;
  73 }
  74
  75 int
  76 gf100_fb_init_page(struct nvkm_fb *fb)
  77 {
  78         struct nvkm_device *device = fb->subdev.device;
  79         switch (fb->page) {
  80         case 16: nvkm_mask(device, 0x100c80, 0x00000001, 0x00000001); break;
  81         case 17: nvkm_mask(device, 0x100c80, 0x00000001, 0x00000000); break;
  82         default:
  83                 return -EINVAL;
  84         }
  85         return 0;
  86 }
  87
  88 void
  89 gf100_fb_init(struct nvkm_fb *base)
  90 {
  91         struct gf100_fb *fb = gf100_fb(base);
  92         struct nvkm_device *device = fb->base.subdev.device;
  93
  94         if (fb->r100c10_page)
  95                 nvkm_wr32(device, 0x100c10, fb->r100c10 >> 8);
  96
  97         if (base->func->clkgate_pack) {
  98                 nvkm_therm_clkgate_init(device->therm,
  99                                         base->func->clkgate_pack);
 100         }
 101 }
 102
 103 void *
 104 gf100_fb_dtor(struct nvkm_fb *base)
 105 {
 106         struct gf100_fb *fb = gf100_fb(base);
 107         struct nvkm_device *device = fb->base.subdev.device;
 108
 109         if (fb->r100c10_page) {
 110                 dma_unmap_page(device->dev, fb->r100c10, PAGE_SIZE,
 111                                DMA_BIDIRECTIONAL);
 112                 __free_page(fb->r100c10_page);
 113         }
 114
 115         return fb;
 116 }
 117
 118 int
 119 gf100_fb_new_(const struct nvkm_fb_func *func, struct nvkm_device *device,
 120               int index, struct nvkm_fb **pfb)
 121 {
 122         struct gf100_fb *fb;
 123
 124         if (!(fb = kzalloc(sizeof(*fb), GFP_KERNEL)))
 125                 return -ENOMEM;
 126         nvkm_fb_ctor(func, device, index, &fb->base);
 127         *pfb = &fb->base;
 128
 129         return 0;
 130 }
 131
 132 static const struct nvkm_fb_func
 133 gf100_fb = {
 134         .dtor = gf100_fb_dtor,
 135         .oneinit = gf100_fb_oneinit,
 136         .init = gf100_fb_init,
 137         .init_page = gf100_fb_init_page,
 138         .intr = gf100_fb_intr,
 139         .ram_new = gf100_ram_new,
 140         .default_bigpage = 17,
 141 };
 142
 143 int
 144 gf100_fb_new(struct nvkm_device *device, int index, struct nvkm_fb **pfb)
 145 {
 146         return gf100_fb_new_(&gf100_fb, device, index, pfb);
 147 }