| 1 | /* $NetBSD: nouveau_subdev_bios_conn.c,v 1.1.1.1 2014/08/06 12:36:28 riastradh Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright 2012 Red Hat Inc. |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 7 | * copy of this software and associated documentation files (the "Software"), |
| 8 | * to deal in the Software without restriction, including without limitation |
| 9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 10 | * and/or sell copies of the Software, and to permit persons to whom the |
| 11 | * Software is furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 20 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 21 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 22 | * OTHER DEALINGS IN THE SOFTWARE. |
| 23 | * |
| 24 | * Authors: Ben Skeggs |
| 25 | */ |
| 26 | |
| 27 | #include <sys/cdefs.h> |
| 28 | __KERNEL_RCSID(0, "$NetBSD: nouveau_subdev_bios_conn.c,v 1.1.1.1 2014/08/06 12:36:28 riastradh Exp $" ); |
| 29 | |
| 30 | #include <core/device.h> |
| 31 | |
| 32 | #include <subdev/bios.h> |
| 33 | #include <subdev/bios/dcb.h> |
| 34 | #include <subdev/bios/conn.h> |
| 35 | |
| 36 | u16 |
| 37 | dcb_conntab(struct nouveau_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len) |
| 38 | { |
| 39 | u16 dcb = dcb_table(bios, ver, hdr, cnt, len); |
| 40 | if (dcb && *ver >= 0x30 && *hdr >= 0x16) { |
| 41 | u16 data = nv_ro16(bios, dcb + 0x14); |
| 42 | if (data) { |
| 43 | *ver = nv_ro08(bios, data + 0); |
| 44 | *hdr = nv_ro08(bios, data + 1); |
| 45 | *cnt = nv_ro08(bios, data + 2); |
| 46 | *len = nv_ro08(bios, data + 3); |
| 47 | return data; |
| 48 | } |
| 49 | } |
| 50 | return 0x0000; |
| 51 | } |
| 52 | |
| 53 | u16 |
| 54 | dcb_conn(struct nouveau_bios *bios, u8 idx, u8 *ver, u8 *len) |
| 55 | { |
| 56 | u8 hdr, cnt; |
| 57 | u16 data = dcb_conntab(bios, ver, &hdr, &cnt, len); |
| 58 | if (data && idx < cnt) |
| 59 | return data + hdr + (idx * *len); |
| 60 | return 0x0000; |
| 61 | } |
| 62 | |