| /* |
| * Copyright 2003 Digi International (www.digi.com) |
| * Scott H Kilau <Scott_Kilau at digi dot com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2, or (at your option) |
| * any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the |
| * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR |
| * PURPOSE. See the GNU General Public License for more details. |
| */ |
| |
| #ifndef __DGNC_CLS_H |
| #define __DGNC_CLS_H |
| |
| /************************************************************************ |
| * Per channel/port Classic UART structure * |
| ************************************************************************ |
| * Base Structure Entries Usage Meanings to Host * |
| * * |
| * W = read write R = read only * |
| * U = Unused. * |
| ************************************************************************/ |
| |
| /* |
| * txrx : WR RHR/THR - Holding reg |
| * ier : WR IER - Interrupt Enable Reg |
| * isr_fcr : WR ISR/FCR - Interrupt Status Reg/Fifo Control Reg |
| * lcr : WR LCR - Line Control Reg |
| * mcr : WR MCR - Modem Control Reg |
| * lsr : WR LSR - Line Status Reg |
| * msr : WR MSG - Modem Status Reg |
| * spr : WR SPR - Scratch pad Reg |
| */ |
| struct cls_uart_struct { |
| u8 txrx; |
| u8 ier; |
| u8 isr_fcr; |
| u8 lcr; |
| u8 mcr; |
| u8 lsr; |
| u8 msr; |
| u8 spr; |
| }; |
| |
| /* Where to read the interrupt register (8bits) */ |
| #define UART_CLASSIC_POLL_ADDR_OFFSET 0x40 |
| |
| #define UART_EXAR654_ENHANCED_REGISTER_SET 0xBF |
| |
| #define UART_16654_FCR_TXTRIGGER_16 0x10 |
| #define UART_16654_FCR_RXTRIGGER_16 0x40 |
| #define UART_16654_FCR_RXTRIGGER_56 0x80 |
| |
| /* Received CTS/RTS change of state */ |
| #define UART_IIR_CTSRTS 0x20 |
| |
| /* Receiver data TIMEOUT */ |
| #define UART_IIR_RDI_TIMEOUT 0x0C |
| |
| /* |
| * These are the EXTENDED definitions for the Exar 654's Interrupt |
| * Enable Register. |
| */ |
| #define UART_EXAR654_EFR_ECB 0x10 /* Enhanced control bit */ |
| #define UART_EXAR654_EFR_IXON 0x2 /* Receiver compares Xon1/Xoff1 */ |
| #define UART_EXAR654_EFR_IXOFF 0x8 /* Transmit Xon1/Xoff1 */ |
| #define UART_EXAR654_EFR_RTSDTR 0x40 /* Auto RTS/DTR Flow Control Enable */ |
| #define UART_EXAR654_EFR_CTSDSR 0x80 /* Auto CTS/DSR Flow COntrol Enable */ |
| #define UART_EXAR654_IER_XOFF 0x20 /* Xoff Interrupt Enable */ |
| #define UART_EXAR654_IER_RTSDTR 0x40 /* Output Interrupt Enable */ |
| #define UART_EXAR654_IER_CTSDSR 0x80 /* Input Interrupt Enable */ |
| |
| /* |
| * Our Global Variables |
| */ |
| extern struct board_ops dgnc_cls_ops; |
| |
| #endif |
