| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * pi1.h: Definitions for SGI PI1 parallel port |
| 3 | */ |
| 4 | |
| 5 | #ifndef _SGI_PI1_H |
| 6 | #define _SGI_PI1_H |
| 7 | |
| 8 | struct pi1_regs { |
| 9 | u8 _data[3]; |
| 10 | volatile u8 data; |
| 11 | u8 _ctrl[3]; |
| 12 | volatile u8 ctrl; |
| 13 | #define PI1_CTRL_STROBE_N 0x01 |
| 14 | #define PI1_CTRL_AFD_N 0x02 |
| 15 | #define PI1_CTRL_INIT_N 0x04 |
| 16 | #define PI1_CTRL_SLIN_N 0x08 |
| 17 | #define PI1_CTRL_IRQ_ENA 0x10 |
| 18 | #define PI1_CTRL_DIR 0x20 |
| 19 | #define PI1_CTRL_SEL 0x40 |
| 20 | u8 _status[3]; |
| 21 | volatile u8 status; |
| 22 | #define PI1_STAT_DEVID 0x03 /* bits 0-1 */ |
| 23 | #define PI1_STAT_NOINK 0x04 /* SGI MODE only */ |
| 24 | #define PI1_STAT_ERROR 0x08 |
| 25 | #define PI1_STAT_ONLINE 0x10 |
| 26 | #define PI1_STAT_PE 0x20 |
| 27 | #define PI1_STAT_ACK 0x40 |
| 28 | #define PI1_STAT_BUSY 0x80 |
| 29 | u8 _dmactrl[3]; |
| 30 | volatile u8 dmactrl; |
| 31 | #define PI1_DMACTRL_FIFO_EMPTY 0x01 /* fifo empty R/O */ |
| 32 | #define PI1_DMACTRL_ABORT 0x02 /* reset DMA and internal fifo W/O */ |
| 33 | #define PI1_DMACTRL_STDMODE 0x00 /* bits 2-3 */ |
| 34 | #define PI1_DMACTRL_SGIMODE 0x04 /* bits 2-3 */ |
| 35 | #define PI1_DMACTRL_RICOHMODE 0x08 /* bits 2-3 */ |
| 36 | #define PI1_DMACTRL_HPMODE 0x0c /* bits 2-3 */ |
| 37 | #define PI1_DMACTRL_BLKMODE 0x10 /* block mode */ |
| 38 | #define PI1_DMACTRL_FIFO_CLEAR 0x20 /* clear fifo W/O */ |
| 39 | #define PI1_DMACTRL_READ 0x40 /* read */ |
| 40 | #define PI1_DMACTRL_RUN 0x80 /* pedal to the metal */ |
| 41 | u8 _intstat[3]; |
| 42 | volatile u8 intstat; |
| 43 | #define PI1_INTSTAT_ACK 0x04 |
| 44 | #define PI1_INTSTAT_FEMPTY 0x08 |
| 45 | #define PI1_INTSTAT_NOINK 0x10 |
| 46 | #define PI1_INTSTAT_ONLINE 0x20 |
| 47 | #define PI1_INTSTAT_ERR 0x40 |
| 48 | #define PI1_INTSTAT_PE 0x80 |
| 49 | u8 _intmask[3]; |
| 50 | volatile u8 intmask; /* enabled low, reset high*/ |
| 51 | #define PI1_INTMASK_ACK 0x04 |
| 52 | #define PI1_INTMASK_FIFO_EMPTY 0x08 |
| 53 | #define PI1_INTMASK_NOINK 0x10 |
| 54 | #define PI1_INTMASK_ONLINE 0x20 |
| 55 | #define PI1_INTMASK_ERR 0x40 |
| 56 | #define PI1_INTMASK_PE 0x80 |
| 57 | u8 _timer1[3]; |
| 58 | volatile u8 timer1; |
| 59 | #define PI1_TIME1 0x27 |
| 60 | u8 _timer2[3]; |
| 61 | volatile u8 timer2; |
| 62 | #define PI1_TIME2 0x13 |
| 63 | u8 _timer3[3]; |
| 64 | volatile u8 timer3; |
| 65 | #define PI1_TIME3 0x10 |
| 66 | u8 _timer4[3]; |
| 67 | volatile u8 timer4; |
| 68 | #define PI1_TIME4 0x00 |
| 69 | }; |
| 70 | |
| 71 | #endif |