/* * (C) Copyright 2004, Psyent Corporation * Scott McNutt * * 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 Nios2 Standard Peripherals ************************************************************************/ #ifndef __NIOS2IO_H__ #define __NIOS2IO_H__ /*------------------------------------------------------------------------ * UART (http://www.altera.com/literature/ds/ds_nios_uart.pdf) *----------------------------------------------------------------------*/ 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 (http://www.altera.com/literature/ds/ds_nios_timer.pdf) *----------------------------------------------------------------------*/ 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 */ /*------------------------------------------------------------------------ * PIO (http://www.altera.com/literature/ds/ds_nios_pio.pdf) *----------------------------------------------------------------------*/ typedef volatile struct nios_pio_t { unsigned int data; /* Data value at each PIO in/out */ unsigned int direction; /* Data direct. for each PIO bit */ unsigned int interruptmask; /* Per-bit IRQ enable/disable */ unsigned int edgecapture; /* Per-bit sync. edge detect & hold */ }nios_pio_t; /* direction register */ #define NIOS_PIO_OUT (1) /* PIO bit is output */ #define NIOS_PIO_IN (0) /* PIO bit is input */ /*------------------------------------------------------------------------ * SPI (http://www.altera.com/literature/ds/ds_nios_spi.pdf) *----------------------------------------------------------------------*/ typedef volatile struct nios_spi_t { unsigned rxdata; /* Rx data reg */ unsigned txdata; /* Tx data reg */ unsigned status; /* Status reg */ unsigned control; /* Control reg */ unsigned reserved; /* (master only) */ unsigned slaveselect; /* SPI slave select mask (master only) */ }nios_spi_t; /* status register */ #define NIOS_SPI_ROE (1 << 3) /* rx overrun */ #define NIOS_SPI_TOE (1 << 4) /* tx overrun */ #define NIOS_SPI_TMT (1 << 5) /* tx empty */ #define NIOS_SPI_TRDY (1 << 6) /* tx ready */ #define NIOS_SPI_RRDY (1 << 7) /* rx ready */ #define NIOS_SPI_E (1 << 8) /* exception */ /* control register */ #define NIOS_SPI_IROE (1 << 3) /* rx overrun int ena */ #define NIOS_SPI_ITOE (1 << 4) /* tx overrun int ena */ #define NIOS_SPI_ITRDY (1 << 6) /* tx ready int ena */ #define NIOS_SPI_IRRDY (1 << 7) /* rx ready int ena */ #define NIOS_SPI_IE (1 << 8) /* exception int ena */ #define NIOS_SPI_SSO (1 << 10) /* override SS_n output */ /*------------------------------------------------------------------------ * JTAG UART *----------------------------------------------------------------------*/ typedef volatile struct nios_jtag_t { unsigned data; /* Data register */ unsigned control; /* Control register */ }nios_jtag_t; /* data register */ #define NIOS_JTAG_RVALID (1<<15) /* Read valid */ #define NIOS_JTAG_DATA(d) ((d)&0x0ff) /* Read data */ #define NIOS_JTAG_RAVAIL(d) ((d)>>16) /* Read space avail */ /* control register */ #define NIOS_JTAG_RE (1 << 0) /* read intr enable */ #define NIOS_JTAG_WE (1 << 1) /* write intr enable */ #define NIOS_JTAG_RI (1 << 8) /* read intr pending */ #define NIOS_JTAG_WI (1 << 9) /* write intr pending*/ #define NIOS_JTAG_AC (1 << 10) /* activity indicator */ #define NIOS_JTAG_RRDY (1 << 12) /* read available */ #define NIOS_JTAG_WSPACE(d) ((d)>>16) /* Write space avail */ /*------------------------------------------------------------------------ * SYSTEM ID *----------------------------------------------------------------------*/ typedef volatile struct nios_sysid_t { unsigned id; /* The system build id*/ unsigned timestamp; /* Timestamp */ }nios_sysid_t; #endif /* __NIOS2IO_H__ */