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) */ 90