diff options
Diffstat (limited to 'include/nios2-io.h')
| -rw-r--r-- | include/nios2-io.h | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/include/nios2-io.h b/include/nios2-io.h new file mode 100644 index 0000000..d2aeabb --- /dev/null +++ b/include/nios2-io.h @@ -0,0 +1,200 @@ +/* + * (C) Copyright 2004, 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 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 */ + +/*------------------------------------------------------------------------ + * ASMI + *----------------------------------------------------------------------*/ +typedef volatile struct nios_asmi_t { + unsigned rxdata; /* Rx data reg */ + unsigned txdata; /* Tx data reg */ + unsigned status; /* Status reg */ + unsigned control; /* Control reg */ + unsigned reserved; + unsigned slavesel; /* Slave select */ + unsigned endofpacket; /* End-of-packet reg */ +}nios_asmi_t; + +/* status register */ +#define NIOS_ASMI_ROE (1 << 3) /* rx overrun */ +#define NIOS_ASMI_TOE (1 << 4) /* tx overrun */ +#define NIOS_ASMI_TMT (1 << 5) /* tx empty */ +#define NIOS_ASMI_TRDY (1 << 6) /* tx ready */ +#define NIOS_ASMI_RRDY (1 << 7) /* rx ready */ +#define NIOS_ASMI_E (1 << 8) /* exception */ +#define NIOS_ASMI_EOP (1 << 9) /* eop detected */ + +/* control register */ +#define NIOS_ASMI_IROE (1 << 3) /* rx overrun int ena */ +#define NIOS_ASMI_ITOE (1 << 4) /* tx overrun int ena */ +#define NIOS_ASMI_ITRDY (1 << 6) /* tx ready int ena */ +#define NIOS_ASMI_IRRDY (1 << 7) /* rx ready int ena */ +#define NIOS_ASMI_IE (1 << 8) /* exception int ena */ +#define NIOS_ASMI_IEOP (1 << 9) /* rx eop int ena */ +#define NIOS_ASMI_SSO (1 << 10) /* slave select enable */ + +/*------------------------------------------------------------------------ + * 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__ */ |