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Diffstat (limited to 'include/nios-io.h')
| -rw-r--r-- | include/nios-io.h | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/include/nios-io.h b/include/nios-io.h new file mode 100644 index 0000000000..9fec6441bc --- /dev/null +++ b/include/nios-io.h @@ -0,0 +1,96 @@ +/* + * (C) Copyright 2003, Psyent Corporation <www.psyent.com> + * Scott McNutt <smcnutt@psyent.com> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +/************************************************************************* + * Altera Nios Standard Peripherals + ************************************************************************/ + +#ifndef __NIOSIO_H__ +#define __NIOSIO_H__ + +/*------------------------------------------------------------------------ + * UART + *----------------------------------------------------------------------*/ +typedef volatile struct nios_uart_t { + unsigned rxdata; /* Rx data reg */ + unsigned txdata; /* Tx data reg */ + unsigned status; /* Status reg */ + unsigned control; /* Control reg */ + unsigned divisor; /* Baud rate divisor reg */ + unsigned endofpacket; /* End-of-packet reg */ +}nios_uart_t; + +/* status register */ +#define NIOS_UART_PE (1 << 0) /* parity error */ +#define NIOS_UART_FE (1 << 1) /* frame error */ +#define NIOS_UART_BRK (1 << 2) /* break detect */ +#define NIOS_UART_ROE (1 << 3) /* rx overrun */ +#define NIOS_UART_TOE (1 << 4) /* tx overrun */ +#define NIOS_UART_TMT (1 << 5) /* tx empty */ +#define NIOS_UART_TRDY (1 << 6) /* tx ready */ +#define NIOS_UART_RRDY (1 << 7) /* rx ready */ +#define NIOS_UART_E (1 << 8) /* exception */ +#define NIOS_UART_DCTS (1 << 10) /* cts change */ +#define NIOS_UART_CTS (1 << 11) /* cts */ +#define NIOS_UART_EOP (1 << 12) /* eop detected */ + +/* control register */ +#define NIOS_UART_IPE (1 << 0) /* parity error int ena*/ +#define NIOS_UART_IFE (1 << 1) /* frame error int ena */ +#define NIOS_UART_IBRK (1 << 2) /* break detect int ena */ +#define NIOS_UART_IROE (1 << 3) /* rx overrun int ena */ +#define NIOS_UART_ITOE (1 << 4) /* tx overrun int ena */ +#define NIOS_UART_ITMT (1 << 5) /* tx empty int ena */ +#define NIOS_UART_ITRDY (1 << 6) /* tx ready int ena */ +#define NIOS_UART_IRRDY (1 << 7) /* rx ready int ena */ +#define NIOS_UART_IE (1 << 8) /* exception int ena */ +#define NIOS_UART_TBRK (1 << 9) /* transmit break */ +#define NIOS_UART_IDCTS (1 << 10) /* cts change int ena */ +#define NIOS_UART_RTS (1 << 11) /* rts */ +#define NIOS_UART_IEOP (1 << 12) /* eop detected int ena */ + + +/*------------------------------------------------------------------------ + * TIMER + *----------------------------------------------------------------------*/ +typedef volatile struct nios_timer_t { + unsigned status; /* Timer status reg */ + unsigned control; /* Timer control reg */ + unsigned periodl; /* Timeout period low */ + unsigned periodh; /* Timeout period high */ + unsigned snapl; /* Snapshot low */ + unsigned snaph; /* Snapshot high */ +}nios_timer_t; + +/* status register */ +#define NIOS_TIMER_TO (1 << 0) /* Timeout */ +#define NIOS_TIMER_RUN (1 << 1) /* Timer running */ + +/* control register */ +#define NIOS_TIMER_ITO (1 << 0) /* Timeout int ena */ +#define NIOS_TIMER_CONT (1 << 1) /* Continuous mode */ +#define NIOS_TIMER_START (1 << 2) /* Start timer */ +#define NIOS_TIMER_STOP (1 << 3) /* Stop timer */ + +#endif /* __NIOSIO_H__ */ + |
