text: /*
   * Copyright 2012 Red Hat Inc.
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   * and/or sell copies of the Software, and to permit persons to whom the
   * Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
   * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
   * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
   * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
   * OTHER DEALINGS IN THE SOFTWARE.
   *
   * Authors: Ben Skeggs
   */
  #include "gf100.h"
  #include "ram.h"
  
  #include <core/memory.h>
  #include <core/option.h>
  #include <subdev/therm.h>
  
  void
  gf100_fb_intr(struct nvkm_fb *base)
  {
  	struct gf100_fb *fb = gf100_fb(base);
  	struct nvkm_subdev *subdev = &fb->base.subdev;
  	struct nvkm_device *device = subdev->device;
  	u32 intr = nvkm_rd32(device, 0x000100);
  	if (intr & 0x08000000)
  		nvkm_debug(subdev, "PFFB intr\n");
  	if (intr & 0x00002000)
  		nvkm_debug(subdev, "PBFB intr\n");
  }
  
  int
  gf100_fb_oneinit(struct nvkm_fb *base)
  {
  	struct gf100_fb *fb = gf100_fb(base);
  	struct nvkm_device *device = fb->base.subdev.device;
  	int ret, size = 0x1000;
  
  	size = nvkm_longopt(device->cfgopt, "MmuDebugBufferSize", size);
  	size = min(size, 0x1000);
  
  	ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, size, 0x1000,
  			      true, &fb->base.mmu_rd);
  	if (ret)
  		return ret;
  
  	ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, size, 0x1000,
  			      true, &fb->base.mmu_wr);
  	if (ret)
  		return ret;
  
  	fb->r100c10_page = alloc_page(GFP_KERNEL | __GFP_ZERO);
  	if (fb->r100c10_page) {
  		fb->r100c10 = dma_map_page(device->dev, fb->r100c10_page, 0,
  					   PAGE_SIZE, DMA_BIDIRECTIONAL);
  		if (dma_mapping_error(device->dev, fb->r100c10))
  			return -EFAULT;
  	}
  
  	return 0;
  }
  
  int
  gf100_fb_init_page(struct nvkm_fb *fb)
  {
  	struct nvkm_device *device = fb->subdev.device;
  	switch (fb->page) {
  	case 16: nvkm_mask(device, 0x100c80, 0x00000001, 0x00000001); break;
  	case 17: nvkm_mask(device, 0x100c80, 0x00000001, 0x00000000); break;
  	default:
  		return -EINVAL;
  	}
  	return 0;
  }
  
  void
  gf100_fb_init(struct nvkm_fb *base)
  {
  	struct gf100_fb *fb = gf100_fb(base);
  	struct nvkm_device *device = fb->base.subdev.device;
  
  	if (fb->r100c10_page)
  		nvkm_wr32(device, 0x100c10, fb->r100c10 >> 8);
  
  	if (base->func->clkgate_pack) {
  		nvkm_therm_clkgate_init(device->therm,
  					base->func->clkgate_pack);
  	}
  }
  
  void *
  gf100_fb_dtor(struct nvkm_fb *base)
  {
  	struct gf100_fb *fb = gf100_fb(base);
  	struct nvkm_device *device = fb->base.subdev.device;
  
  	if (fb->r100c10_page) {
  		dma_unmap_page(device->dev, fb->r100c10, PAGE_SIZE,
  			       DMA_BIDIRECTIONAL);
  		__free_page(fb->r100c10_page);
  	}
  
  	return fb;
  }
  
  int
  gf100_fb_new_(const struct nvkm_fb_func *func, struct nvkm_device *device,
  	      int index, struct nvkm_fb **pfb)
  {
  	struct gf100_fb *fb;
  
  	if (!(fb = kzalloc(sizeof(*fb), GFP_KERNEL)))
  		return -ENOMEM;
  	nvkm_fb_ctor(func, device, index, &fb->base);
  	*pfb = &fb->base;
  
  	return 0;
  }
  
  static const struct nvkm_fb_func
  gf100_fb = {
  	.dtor = gf100_fb_dtor,
  	.oneinit = gf100_fb_oneinit,
  	.init = gf100_fb_init,
  	.init_page = gf100_fb_init_page,
  	.intr = gf100_fb_intr,
  	.ram_new = gf100_ram_new,
  	.default_bigpage = 17,
  };
  
  int
  gf100_fb_new(struct nvkm_device *device, int index, struct nvkm_fb **pfb)
  {
  	return gf100_fb_new_(&gf100_fb, device, index, pfb);
  }
  