diff options
Diffstat (limited to 'include/nios.h')
| -rw-r--r-- | include/nios.h | 77 |
1 files changed, 0 insertions, 77 deletions
diff --git a/include/nios.h b/include/nios.h deleted file mode 100644 index 46b685ab9d..0000000000 --- a/include/nios.h +++ /dev/null @@ -1,77 +0,0 @@ -/* - * (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 - */ - -#ifndef __NIOS_H__ -#define __NIOS_H__ - -/*------------------------------------------------------------------------ - * Control registers -- use with wrctl() & rdctl() - *----------------------------------------------------------------------*/ -#define CTL_STATUS 0x00 /* Processor status */ -#define CTL_ISTATUS 0x01 /* Saved status (exception) */ -#define CTL_WVALID 0x02 /* Valid window limit */ -#define CTL_ICACHE 0x05 /* I-cache line-invalidate */ -#define CTL_CPU_ID 0x06 /* CPU version id */ -#define CTL_DCACHE 0x07 /* D-cache line-invalidate */ -#define CTL_CLR_IE 0x08 /* Interrupt clear (disable) */ -#define CTL_SET_IE 0x09 /* Interrupt set (enable) */ - -/*------------------------------------------------------------------------ - * Access to control regs - *----------------------------------------------------------------------*/ -#define _str_(s) #s - -#define rdctl(reg)\ - ({unsigned int val;\ - asm volatile( "pfx " _str_(reg) "\n\t rdctl %0"\ - : "=r" (val) ); val;}) - -#define wrctl(reg,val)\ - asm volatile( "pfx " _str_(reg) "\n\t wrctl %0 \n\t nop"\ - : : "r" (val)) - -/*------------------------------------------------------------------------ - * Control reg bit masks - *----------------------------------------------------------------------*/ -#define STATUS_DC (1<<17) /* Data cache enable */ -#define STATUS_IC (1<<16) /* Instruction cache enable */ -#define STATUS_IE (1<<15) /* Interrupt enable */ -#define STATUS_IPRI (0x3f<<9) /* Interrupt priority */ -#define STATUS_CWP (0x1f<<4) /* Current window pointer */ -#define STATUS_N (1<<3) /* Condition code: negative */ -#define STATUS_V (1<<2) /* Condition code: overflow */ -#define STATUS_Z (1<<1) /* Condition code: zero */ -#define STATUS_C (1<<0) /* Condition code: carry/borrow */ - -static inline unsigned ipri( unsigned prio ) -{ - unsigned tmp; - unsigned status = rdctl(CTL_STATUS); - prio = (prio << 9) & STATUS_IPRI; - tmp = (status & ~STATUS_IPRI) | prio; - wrctl(CTL_STATUS,tmp); - return( (status & STATUS_IPRI) >> 9); -} - - -#endif /* __NIOS_H__ */ |
