| Sam Ravnborg | a439fe5 | 2008-07-27 23:00:59 +0200 | [diff] [blame] | 1 | /* |
| 2 | * auxio.h: Definitions and code for the Auxiliary I/O register. |
| 3 | * |
| 4 | * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) |
| 5 | */ |
| 6 | #ifndef _SPARC_AUXIO_H |
| 7 | #define _SPARC_AUXIO_H |
| 8 | |
| 9 | #include <asm/system.h> |
| 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 | extern void set_auxio(unsigned char bits_on, unsigned char bits_off); |
| 39 | extern 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__ unsigned char * 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) */ |