include/asm/auxio_32.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 /*
0003  * auxio.h:  Definitions and code for the Auxiliary I/O register.
0004  *
0005  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
0006  */
0007 #ifndef _SPARC_AUXIO_H
0008 #define _SPARC_AUXIO_H
0009
0010 #include <asm/vaddrs.h>
0011
0012 /* This register is an unsigned char in IO space.  It does two things.
0013  * First, it is used to control the front panel LED light on machines
0014  * that have it (good for testing entry points to trap handlers and irq's)
0015  * Secondly, it controls various floppy drive parameters.
0016  */
0017 #define AUXIO_ORMEIN      0xf0    /* All writes must set these bits. */
0018 #define AUXIO_ORMEIN4M    0xc0    /* sun4m - All writes must set these bits. */
0019 #define AUXIO_FLPY_DENS   0x20    /* Floppy density, high if set. Read only. */
0020 #define AUXIO_FLPY_DCHG   0x10    /* A disk change occurred.  Read only. */
0021 #define AUXIO_EDGE_ON     0x10    /* sun4m - On means Jumper block is in. */
0022 #define AUXIO_FLPY_DSEL   0x08    /* Drive select/start-motor. Write only. */
0023 #define AUXIO_LINK_TEST   0x08    /* sun4m - On means TPE Carrier detect. */
0024
0025 /* Set the following to one, then zero, after doing a pseudo DMA transfer. */
0026 #define AUXIO_FLPY_TCNT   0x04    /* Floppy terminal count. Write only. */
0027
0028 /* Set the following to zero to eject the floppy. */
0029 #define AUXIO_FLPY_EJCT   0x02    /* Eject floppy disk.  Write only. */
0030 #define AUXIO_LED         0x01    /* On if set, off if unset. Read/Write */
0031
0032 #ifndef __ASSEMBLY__
0033
0034 /*
0035  * NOTE: these routines are implementation dependent--
0036  * understand the hardware you are querying!
0037  */
0038 void set_auxio(unsigned char bits_on, unsigned char bits_off);
0039 unsigned char get_auxio(void); /* .../asm/floppy.h */
0040
0041 /*
0042  * The following routines are provided for driver-compatibility
0043  * with sparc64 (primarily sunlance.c)
0044  */
0045
0046 #define AUXIO_LTE_ON    1
0047 #define AUXIO_LTE_OFF   0
0048
0049 /* auxio_set_lte - Set Link Test Enable (TPE Link Detect)
0050  *
0051  * on - AUXIO_LTE_ON or AUXIO_LTE_OFF
0052  */
0053 #define auxio_set_lte(on) \
0054 do { \
0055     if(on) { \
0056         set_auxio(AUXIO_LINK_TEST, 0); \
0057     } else { \
0058         set_auxio(0, AUXIO_LINK_TEST); \
0059     } \
0060 } while (0)
0061
0062 #define AUXIO_LED_ON    1
0063 #define AUXIO_LED_OFF   0
0064
0065 /* auxio_set_led - Set system front panel LED
0066  *
0067  * on - AUXIO_LED_ON or AUXIO_LED_OFF
0068  */
0069 #define auxio_set_led(on) \
0070 do { \
0071     if(on) { \
0072         set_auxio(AUXIO_LED, 0); \
0073     } else { \
0074         set_auxio(0, AUXIO_LED); \
0075     } \
0076 } while (0)
0077
0078 #endif /* !(__ASSEMBLY__) */
0079
0080
0081 /* AUXIO2 (Power Off Control) */
0082 extern volatile u8 __iomem *auxio_power_register;
0083
0084 #define AUXIO_POWER_DETECT_FAILURE  32
0085 #define AUXIO_POWER_CLEAR_FAILURE   2
0086 #define AUXIO_POWER_OFF         1
0087
0088
0089 #endif /* !(_SPARC_AUXIO_H) */