linux_kernel/drivers/gpu/drm/nouveau/nvkm/subdev/fb/nv46.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"

void
nv46_fb_tile_init(struct nvkm_fb *fb, int i, u32 addr, u32 size, u32 pitch,
		  u32 flags, struct nvkm_fb_tile *tile)
{
	/* for performance, select alternate bank offset for zeta */
	if (!(flags & 4)) tile->addr = (0 << 3);
	else              tile->addr = (1 << 3);

	tile->addr |= 0x00000001; /* mode = vram */
	tile->addr |= addr;
	tile->limit = max(1u, addr + size) - 1;
	tile->pitch = pitch;
}

static const struct nvkm_fb_func
nv46_fb = {
	.init = nv44_fb_init,
	.tile.regions = 15,
	.tile.init = nv46_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
nv46_fb_new(struct nvkm_device *device, int index, struct nvkm_fb **pfb)
{
	return nvkm_fb_new_(&nv46_fb, device, index, pfb);
}