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89 lines
2.6 KiB
89 lines
2.6 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* auxio.h: Definitions and code for the Auxiliary I/O register. |
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* |
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* Copyright (C) 1995 David S. Miller ([email protected]) |
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*/ |
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#ifndef _SPARC_AUXIO_H |
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#define _SPARC_AUXIO_H |
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#include <asm/vaddrs.h> |
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/* This register is an unsigned char in IO space. It does two things. |
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* First, it is used to control the front panel LED light on machines |
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* that have it (good for testing entry points to trap handlers and irq's) |
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* Secondly, it controls various floppy drive parameters. |
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*/ |
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#define AUXIO_ORMEIN 0xf0 /* All writes must set these bits. */ |
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#define AUXIO_ORMEIN4M 0xc0 /* sun4m - All writes must set these bits. */ |
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#define AUXIO_FLPY_DENS 0x20 /* Floppy density, high if set. Read only. */ |
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#define AUXIO_FLPY_DCHG 0x10 /* A disk change occurred. Read only. */ |
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#define AUXIO_EDGE_ON 0x10 /* sun4m - On means Jumper block is in. */ |
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#define AUXIO_FLPY_DSEL 0x08 /* Drive select/start-motor. Write only. */ |
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#define AUXIO_LINK_TEST 0x08 /* sun4m - On means TPE Carrier detect. */ |
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/* Set the following to one, then zero, after doing a pseudo DMA transfer. */ |
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#define AUXIO_FLPY_TCNT 0x04 /* Floppy terminal count. Write only. */ |
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/* Set the following to zero to eject the floppy. */ |
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#define AUXIO_FLPY_EJCT 0x02 /* Eject floppy disk. Write only. */ |
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#define AUXIO_LED 0x01 /* On if set, off if unset. Read/Write */ |
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#ifndef __ASSEMBLY__ |
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/* |
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* NOTE: these routines are implementation dependent-- |
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* understand the hardware you are querying! |
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*/ |
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void set_auxio(unsigned char bits_on, unsigned char bits_off); |
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unsigned char get_auxio(void); /* .../asm/floppy.h */ |
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/* |
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* The following routines are provided for driver-compatibility |
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* with sparc64 (primarily sunlance.c) |
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*/ |
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#define AUXIO_LTE_ON 1 |
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#define AUXIO_LTE_OFF 0 |
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/* auxio_set_lte - Set Link Test Enable (TPE Link Detect) |
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* |
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* on - AUXIO_LTE_ON or AUXIO_LTE_OFF |
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*/ |
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#define auxio_set_lte(on) \ |
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do { \ |
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if(on) { \ |
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set_auxio(AUXIO_LINK_TEST, 0); \ |
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} else { \ |
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set_auxio(0, AUXIO_LINK_TEST); \ |
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} \ |
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} while (0) |
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#define AUXIO_LED_ON 1 |
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#define AUXIO_LED_OFF 0 |
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/* auxio_set_led - Set system front panel LED |
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* |
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* on - AUXIO_LED_ON or AUXIO_LED_OFF |
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*/ |
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#define auxio_set_led(on) \ |
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do { \ |
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if(on) { \ |
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set_auxio(AUXIO_LED, 0); \ |
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} else { \ |
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set_auxio(0, AUXIO_LED); \ |
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} \ |
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} while (0) |
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#endif /* !(__ASSEMBLY__) */ |
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/* AUXIO2 (Power Off Control) */ |
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extern volatile u8 __iomem *auxio_power_register; |
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#define AUXIO_POWER_DETECT_FAILURE 32 |
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#define AUXIO_POWER_CLEAR_FAILURE 2 |
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#define AUXIO_POWER_OFF 1 |
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#endif /* !(_SPARC_AUXIO_H) */
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