2 * Carsten Langgaard, carstenl@mips.com
3 * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
5 * ########################################################################
7 * This program is free software; you can distribute it and/or modify it
8 * under the terms of the GNU General Public License (Version 2) as
9 * published by the Free Software Foundation.
11 * This program is distributed in the hope it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
20 * ########################################################################
22 * Register definitions for the UART part of the Philips SAA9730 chip.
26 #ifndef SAA9730_UART_H
27 #define SAA9730_UART_H
29 /* The SAA9730 UART register map, as seen via the PCI bus */
31 #define SAA9730_UART_REGS_ADDR 0x21800
33 struct uart_saa9730_regmap {
34 volatile unsigned char Thr_Rbr;
35 volatile unsigned char Ier;
36 volatile unsigned char Iir_Fcr;
37 volatile unsigned char Lcr;
38 volatile unsigned char Mcr;
39 volatile unsigned char Lsr;
40 volatile unsigned char Msr;
41 volatile unsigned char Scr;
42 volatile unsigned char BaudDivLsb;
43 volatile unsigned char BaudDivMsb;
44 volatile unsigned char Junk0;
45 volatile unsigned char Junk1;
46 volatile unsigned int Config; /* 0x2180c */
47 volatile unsigned int TxStart; /* 0x21810 */
48 volatile unsigned int TxLength; /* 0x21814 */
49 volatile unsigned int TxCounter; /* 0x21818 */
50 volatile unsigned int RxStart; /* 0x2181c */
51 volatile unsigned int RxLength; /* 0x21820 */
52 volatile unsigned int RxCounter; /* 0x21824 */
54 typedef volatile struct uart_saa9730_regmap t_uart_saa9730_regmap;
57 * Only a subset of the UART control bits are defined here,
58 * enough to make the serial debug port work.
61 #define SAA9730_LCR_DATA8 0x03
63 #define SAA9730_MCR_DTR 0x01
64 #define SAA9730_MCR_RTS 0x02
66 #define SAA9730_LSR_DR 0x01
67 #define SAA9730_LSR_THRE 0x20
69 #endif /* !(SAA9730_UART_H) */