linux_kernel/drivers/gpu/drm/nouveau/nvkm/subdev/fb/nv44.c

/*
 * Copyright (C) 2010 Francisco Jerez.
 * All Rights Reserved.
 *
 * 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 (including the
 * next paragraph) 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 OWNER(S) AND/OR ITS SUPPLIERS 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.
 *
 */
#include "priv.h"
#include "ram.h"

static void
nv44_fb_tile_init(struct nvkm_fb *fb, int i, u32 addr, u32 size, u32 pitch,
		  u32 flags, struct nvkm_fb_tile *tile)
{
	tile->addr  = 0x00000001; /* mode = vram */
	tile->addr |= addr;
	tile->limit = max(1u, addr + size) - 1;
	tile->pitch = pitch;
}

void
nv44_fb_tile_prog(struct nvkm_fb *fb, int i, struct nvkm_fb_tile *tile)
{
	struct nvkm_device *device = fb->subdev.device;
	nvkm_wr32(device, 0x100604 + (i * 0x10), tile->limit);
	nvkm_wr32(device, 0x100608 + (i * 0x10), tile->pitch);
	nvkm_wr32(device, 0x100600 + (i * 0x10), tile->addr);
	nvkm_rd32(device, 0x100600 + (i * 0x10));
}

void
nv44_fb_init(struct nvkm_fb *fb)
{
	struct nvkm_device *device = fb->subdev.device;
	nvkm_wr32(device, 0x100850, 0x80000000);
	nvkm_wr32(device, 0x100800, 0x00000001);
}

static const struct nvkm_fb_func
nv44_fb = {
	.init = nv44_fb_init,
	.tile.regions = 12,
	.tile.init = nv44_fb_tile_init,
	.tile.fini = nv20_fb_tile_fini,
	.tile.prog = nv44_fb_tile_prog,
	.ram_new = nv44_ram_new,
	.memtype_valid = nv04_fb_memtype_valid,
};

int
nv44_fb_new(struct nvkm_device *device, int index, struct nvkm_fb **pfb)
{
	return nvkm_fb_new_(&nv44_fb, device, index, pfb);
}