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auxio_32.h
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1 /*
2  * auxio.h: Definitions and code for the Auxiliary I/O register.
3  *
4  * Copyright (C) 1995 David S. Miller ([email protected])
5  */
6 #ifndef _SPARC_AUXIO_H
7 #define _SPARC_AUXIO_H
8 
9 #include <asm/vaddrs.h>
10 
11 /* This register is an unsigned char in IO space. It does two things.
12  * First, it is used to control the front panel LED light on machines
13  * that have it (good for testing entry points to trap handlers and irq's)
14  * Secondly, it controls various floppy drive parameters.
15  */
16 #define AUXIO_ORMEIN 0xf0 /* All writes must set these bits. */
17 #define AUXIO_ORMEIN4M 0xc0 /* sun4m - All writes must set these bits. */
18 #define AUXIO_FLPY_DENS 0x20 /* Floppy density, high if set. Read only. */
19 #define AUXIO_FLPY_DCHG 0x10 /* A disk change occurred. Read only. */
20 #define AUXIO_EDGE_ON 0x10 /* sun4m - On means Jumper block is in. */
21 #define AUXIO_FLPY_DSEL 0x08 /* Drive select/start-motor. Write only. */
22 #define AUXIO_LINK_TEST 0x08 /* sun4m - On means TPE Carrier detect. */
23 
24 /* Set the following to one, then zero, after doing a pseudo DMA transfer. */
25 #define AUXIO_FLPY_TCNT 0x04 /* Floppy terminal count. Write only. */
26 
27 /* Set the following to zero to eject the floppy. */
28 #define AUXIO_FLPY_EJCT 0x02 /* Eject floppy disk. Write only. */
29 #define AUXIO_LED 0x01 /* On if set, off if unset. Read/Write */
30 
31 #ifndef __ASSEMBLY__
32 
33 /*
34  * NOTE: these routines are implementation dependent--
35  * understand the hardware you are querying!
36  */
37 extern void set_auxio(unsigned char bits_on, unsigned char bits_off);
38 extern unsigned char get_auxio(void); /* .../asm/floppy.h */
39 
40 /*
41  * The following routines are provided for driver-compatibility
42  * with sparc64 (primarily sunlance.c)
43  */
44 
45 #define AUXIO_LTE_ON 1
46 #define AUXIO_LTE_OFF 0
47 
48 /* auxio_set_lte - Set Link Test Enable (TPE Link Detect)
49  *
50  * on - AUXIO_LTE_ON or AUXIO_LTE_OFF
51  */
52 #define auxio_set_lte(on) \
53 do { \
54  if(on) { \
55  set_auxio(AUXIO_LINK_TEST, 0); \
56  } else { \
57  set_auxio(0, AUXIO_LINK_TEST); \
58  } \
59 } while (0)
60 
61 #define AUXIO_LED_ON 1
62 #define AUXIO_LED_OFF 0
63 
64 /* auxio_set_led - Set system front panel LED
65  *
66  * on - AUXIO_LED_ON or AUXIO_LED_OFF
67  */
68 #define auxio_set_led(on) \
69 do { \
70  if(on) { \
71  set_auxio(AUXIO_LED, 0); \
72  } else { \
73  set_auxio(0, AUXIO_LED); \
74  } \
75 } while (0)
76 
77 #endif /* !(__ASSEMBLY__) */
78 
79 
80 /* AUXIO2 (Power Off Control) */
81 extern __volatile__ unsigned char * auxio_power_register;
82 
83 #define AUXIO_POWER_DETECT_FAILURE 32
84 #define AUXIO_POWER_CLEAR_FAILURE 2
85 #define AUXIO_POWER_OFF 1
86 
87 
88 #endif /* !(_SPARC_AUXIO_H) */