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 72