1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * auxio.h: Definitions and code for the Auxiliary I/O register.
4 *
5 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
6 */
7 #ifndef _SPARC_AUXIO_H
8 #define _SPARC_AUXIO_H
9
10 #include <asm/vaddrs.h>
11
12 /* This register is an unsigned char in IO space. It does two things.
13 * First, it is used to control the front panel LED light on machines
14 * that have it (good for testing entry points to trap handlers and irq's)
15 * Secondly, it controls various floppy drive parameters.
16 */
17 #define AUXIO_ORMEIN 0xf0 /* All writes must set these bits. */
18 #define AUXIO_ORMEIN4M 0xc0 /* sun4m - All writes must set these bits. */
19 #define AUXIO_FLPY_DENS 0x20 /* Floppy density, high if set. Read only. */
20 #define AUXIO_FLPY_DCHG 0x10 /* A disk change occurred. Read only. */
21 #define AUXIO_EDGE_ON 0x10 /* sun4m - On means Jumper block is in. */
22 #define AUXIO_FLPY_DSEL 0x08 /* Drive select/start-motor. Write only. */
23 #define AUXIO_LINK_TEST 0x08 /* sun4m - On means TPE Carrier detect. */
24
25 /* Set the following to one, then zero, after doing a pseudo DMA transfer. */
26 #define AUXIO_FLPY_TCNT 0x04 /* Floppy terminal count. Write only. */
27
28 /* Set the following to zero to eject the floppy. */
29 #define AUXIO_FLPY_EJCT 0x02 /* Eject floppy disk. Write only. */
30 #define AUXIO_LED 0x01 /* On if set, off if unset. Read/Write */
31
32 #ifndef __ASSEMBLY__
33
34 /*
35 * NOTE: these routines are implementation dependent--
36 * understand the hardware you are querying!
37 */
38 void set_auxio(unsigned char bits_on, unsigned char bits_off);
39 unsigned char get_auxio(void); /* .../asm/floppy.h */
40
41 /*
42 * The following routines are provided for driver-compatibility
43 * with sparc64 (primarily sunlance.c)
44 */
45
46 #define AUXIO_LTE_ON 1
47 #define AUXIO_LTE_OFF 0
48
49 /* auxio_set_lte - Set Link Test Enable (TPE Link Detect)
50 *
51 * on - AUXIO_LTE_ON or AUXIO_LTE_OFF
52 */
53 #define auxio_set_lte(on) \
54 do { \
55 if(on) { \
56 set_auxio(AUXIO_LINK_TEST, 0); \
57 } else { \
58 set_auxio(0, AUXIO_LINK_TEST); \
59 } \
60 } while (0)
61
62 #define AUXIO_LED_ON 1
63 #define AUXIO_LED_OFF 0
64
65 /* auxio_set_led - Set system front panel LED
66 *
67 * on - AUXIO_LED_ON or AUXIO_LED_OFF
68 */
69 #define auxio_set_led(on) \
70 do { \
71 if(on) { \
72 set_auxio(AUXIO_LED, 0); \
73 } else { \
74 set_auxio(0, AUXIO_LED); \
75 } \
76 } while (0)
77
78 #endif /* !(__ASSEMBLY__) */
79
80
81 /* AUXIO2 (Power Off Control) */
82 extern volatile u8 __iomem *auxio_power_register;
83
84 #define AUXIO_POWER_DETECT_FAILURE 32
85 #define AUXIO_POWER_CLEAR_FAILURE 2
86 #define AUXIO_POWER_OFF 1
87
88
89 #endif /* !(_SPARC_AUXIO_H) */