subdev/fb/nv46.c

0001 /*
0002  * Copyright (C) 2010 Francisco Jerez.
0003  * All Rights Reserved.
0004  *
0005  * Permission is hereby granted, free of charge, to any person obtaining
0006  * a copy of this software and associated documentation files (the
0007  * "Software"), to deal in the Software without restriction, including
0008  * without limitation the rights to use, copy, modify, merge, publish,
0009  * distribute, sublicense, and/or sell copies of the Software, and to
0010  * permit persons to whom the Software is furnished to do so, subject to
0011  * the following conditions:
0012  *
0013  * The above copyright notice and this permission notice (including the
0014  * next paragraph) shall be included in all copies or substantial
0015  * portions of the Software.
0016  *
0017  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
0018  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
0019  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
0020  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
0021  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
0022  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
0023  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
0024  *
0025  */
0026 #include "priv.h"
0027 #include "ram.h"
0028
0029 void
0030 nv46_fb_tile_init(struct nvkm_fb *fb, int i, u32 addr, u32 size, u32 pitch,
0031           u32 flags, struct nvkm_fb_tile *tile)
0032 {
0033     /* for performance, select alternate bank offset for zeta */
0034     if (!(flags & 4)) tile->addr = (0 << 3);
0035     else              tile->addr = (1 << 3);
0036
0037     tile->addr |= 0x00000001; /* mode = vram */
0038     tile->addr |= addr;
0039     tile->limit = max(1u, addr + size) - 1;
0040     tile->pitch = pitch;
0041 }
0042
0043 static const struct nvkm_fb_func
0044 nv46_fb = {
0045     .init = nv44_fb_init,
0046     .tile.regions = 15,
0047     .tile.init = nv46_fb_tile_init,
0048     .tile.fini = nv20_fb_tile_fini,
0049     .tile.prog = nv44_fb_tile_prog,
0050     .ram_new = nv44_ram_new,
0051 };
0052
0053 int
0054 nv46_fb_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
0055 {
0056     return nvkm_fb_new_(&nv46_fb, device, type, inst, pfb);
0057 }