| /* |
| * pi1.h: Definitions for SGI PI1 parallel port |
| */ |
| |
| #ifndef _SGI_PI1_H |
| #define _SGI_PI1_H |
| |
| struct pi1_regs { |
| u8 _data[3]; |
| volatile u8 data; |
| u8 _ctrl[3]; |
| volatile u8 ctrl; |
| #define PI1_CTRL_STROBE_N 0x01 |
| #define PI1_CTRL_AFD_N 0x02 |
| #define PI1_CTRL_INIT_N 0x04 |
| #define PI1_CTRL_SLIN_N 0x08 |
| #define PI1_CTRL_IRQ_ENA 0x10 |
| #define PI1_CTRL_DIR 0x20 |
| #define PI1_CTRL_SEL 0x40 |
| u8 _status[3]; |
| volatile u8 status; |
| #define PI1_STAT_DEVID 0x03 /* bits 0-1 */ |
| #define PI1_STAT_NOINK 0x04 /* SGI MODE only */ |
| #define PI1_STAT_ERROR 0x08 |
| #define PI1_STAT_ONLINE 0x10 |
| #define PI1_STAT_PE 0x20 |
| #define PI1_STAT_ACK 0x40 |
| #define PI1_STAT_BUSY 0x80 |
| u8 _dmactrl[3]; |
| volatile u8 dmactrl; |
| #define PI1_DMACTRL_FIFO_EMPTY 0x01 /* fifo empty R/O */ |
| #define PI1_DMACTRL_ABORT 0x02 /* reset DMA and internal fifo W/O */ |
| #define PI1_DMACTRL_STDMODE 0x00 /* bits 2-3 */ |
| #define PI1_DMACTRL_SGIMODE 0x04 /* bits 2-3 */ |
| #define PI1_DMACTRL_RICOHMODE 0x08 /* bits 2-3 */ |
| #define PI1_DMACTRL_HPMODE 0x0c /* bits 2-3 */ |
| #define PI1_DMACTRL_BLKMODE 0x10 /* block mode */ |
| #define PI1_DMACTRL_FIFO_CLEAR 0x20 /* clear fifo W/O */ |
| #define PI1_DMACTRL_READ 0x40 /* read */ |
| #define PI1_DMACTRL_RUN 0x80 /* pedal to the metal */ |
| u8 _intstat[3]; |
| volatile u8 intstat; |
| #define PI1_INTSTAT_ACK 0x04 |
| #define PI1_INTSTAT_FEMPTY 0x08 |
| #define PI1_INTSTAT_NOINK 0x10 |
| #define PI1_INTSTAT_ONLINE 0x20 |
| #define PI1_INTSTAT_ERR 0x40 |
| #define PI1_INTSTAT_PE 0x80 |
| u8 _intmask[3]; |
| volatile u8 intmask; /* enabled low, reset high*/ |
| #define PI1_INTMASK_ACK 0x04 |
| #define PI1_INTMASK_FIFO_EMPTY 0x08 |
| #define PI1_INTMASK_NOINK 0x10 |
| #define PI1_INTMASK_ONLINE 0x20 |
| #define PI1_INTMASK_ERR 0x40 |
| #define PI1_INTMASK_PE 0x80 |
| u8 _timer1[3]; |
| volatile u8 timer1; |
| #define PI1_TIME1 0x27 |
| u8 _timer2[3]; |
| volatile u8 timer2; |
| #define PI1_TIME2 0x13 |
| u8 _timer3[3]; |
| volatile u8 timer3; |
| #define PI1_TIME3 0x10 |
| u8 _timer4[3]; |
| volatile u8 timer4; |
| #define PI1_TIME4 0x00 |
| }; |
| |
| #endif |
