LXR linux/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
  31void
  32gf100_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
  44int
  45gf100_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
  75int
  76gf100_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
  88void
  89gf100_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
 103void *
 104gf100_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
 118int
 119gf100_fb_new_(const struct nvkm_fb_func *func, struct nvkm_device *device,
 120              enum nvkm_subdev_type type, int inst, 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, type, inst, &fb->base);
 127        *pfb = &fb->base;
 128
 129        return 0;
 130}
 131
 132static const struct nvkm_fb_func
 133gf100_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
 143int
 144gf100_fb_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
 145{
 146        return gf100_fb_new_(&gf100_fb, device, type, inst, pfb);
 147}
 148