| /* |
| * (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 */ |
| |
| /*------------------------------------------------------------------------ |
| * 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__ */ |