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1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * pi1.h: Definitions for SGI PI1 parallel port
4 */
5
6#ifndef _SGI_PI1_H
7#define _SGI_PI1_H
8
9struct pi1_regs {
10 u8 _data[3];
11 volatile u8 data;
12 u8 _ctrl[3];
13 volatile u8 ctrl;
14#define PI1_CTRL_STROBE_N 0x01
15#define PI1_CTRL_AFD_N 0x02
16#define PI1_CTRL_INIT_N 0x04
17#define PI1_CTRL_SLIN_N 0x08
18#define PI1_CTRL_IRQ_ENA 0x10
19#define PI1_CTRL_DIR 0x20
20#define PI1_CTRL_SEL 0x40
21 u8 _status[3];
22 volatile u8 status;
23#define PI1_STAT_DEVID 0x03 /* bits 0-1 */
24#define PI1_STAT_NOINK 0x04 /* SGI MODE only */
25#define PI1_STAT_ERROR 0x08
26#define PI1_STAT_ONLINE 0x10
27#define PI1_STAT_PE 0x20
28#define PI1_STAT_ACK 0x40
29#define PI1_STAT_BUSY 0x80
30 u8 _dmactrl[3];
31 volatile u8 dmactrl;
32#define PI1_DMACTRL_FIFO_EMPTY 0x01 /* fifo empty R/O */
33#define PI1_DMACTRL_ABORT 0x02 /* reset DMA and internal fifo W/O */
34#define PI1_DMACTRL_STDMODE 0x00 /* bits 2-3 */
35#define PI1_DMACTRL_SGIMODE 0x04 /* bits 2-3 */
36#define PI1_DMACTRL_RICOHMODE 0x08 /* bits 2-3 */
37#define PI1_DMACTRL_HPMODE 0x0c /* bits 2-3 */
38#define PI1_DMACTRL_BLKMODE 0x10 /* block mode */
39#define PI1_DMACTRL_FIFO_CLEAR 0x20 /* clear fifo W/O */
40#define PI1_DMACTRL_READ 0x40 /* read */
41#define PI1_DMACTRL_RUN 0x80 /* pedal to the metal */
42 u8 _intstat[3];
43 volatile u8 intstat;
44#define PI1_INTSTAT_ACK 0x04
45#define PI1_INTSTAT_FEMPTY 0x08
46#define PI1_INTSTAT_NOINK 0x10
47#define PI1_INTSTAT_ONLINE 0x20
48#define PI1_INTSTAT_ERR 0x40
49#define PI1_INTSTAT_PE 0x80
50 u8 _intmask[3];
51 volatile u8 intmask; /* enabled low, reset high*/
52#define PI1_INTMASK_ACK 0x04
53#define PI1_INTMASK_FIFO_EMPTY 0x08
54#define PI1_INTMASK_NOINK 0x10
55#define PI1_INTMASK_ONLINE 0x20
56#define PI1_INTMASK_ERR 0x40
57#define PI1_INTMASK_PE 0x80
58 u8 _timer1[3];
59 volatile u8 timer1;
60#define PI1_TIME1 0x27
61 u8 _timer2[3];
62 volatile u8 timer2;
63#define PI1_TIME2 0x13
64 u8 _timer3[3];
65 volatile u8 timer3;
66#define PI1_TIME3 0x10
67 u8 _timer4[3];
68 volatile u8 timer4;
69#define PI1_TIME4 0x00
70};
71
72#endif
1/*
2 * pi1.h: Definitions for SGI PI1 parallel port
3 */
4
5#ifndef _SGI_PI1_H
6#define _SGI_PI1_H
7
8struct 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