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/*
* 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"
extern const u8 gf100_pte_storage_type_map[256];
bool
gf100_fb_memtype_valid(struct nvkm_fb *fb, u32 tile_flags)
{
u8 memtype = (tile_flags & 0x0000ff00) >> 8;
return likely((gf100_pte_storage_type_map[memtype] != 0xff));
}
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");
}
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);
nvkm_mask(device, 0x100c80, 0x00000001, 0x00000000); /* 128KiB lpg */
}
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;
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;
}
static const struct nvkm_fb_func
gf100_fb = {
.dtor = gf100_fb_dtor,
.init = gf100_fb_init,
.intr = gf100_fb_intr,
.ram_new = gf100_ram_new,
.memtype_valid = gf100_fb_memtype_valid,
};
int
gf100_fb_new(struct nvkm_device *device, int index, struct nvkm_fb **pfb)
{
return gf100_fb_new_(&gf100_fb, device, index, pfb);
}
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