Annotation of sys/arch/mac68k/include/z8530var.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: z8530var.h,v 1.7 2004/11/25 18:32:10 miod Exp $ */
! 2: /* $NetBSD: z8530var.h,v 1.2 1996/06/07 10:27:19 briggs Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1994 Gordon W. Ross
! 6: * Copyright (c) 1992, 1993
! 7: * The Regents of the University of California. All rights reserved.
! 8: *
! 9: * This software was developed by the Computer Systems Engineering group
! 10: * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
! 11: * contributed to Berkeley.
! 12: *
! 13: * All advertising materials mentioning features or use of this software
! 14: * must display the following acknowledgement:
! 15: * This product includes software developed by the University of
! 16: * California, Lawrence Berkeley Laboratory.
! 17: *
! 18: * Redistribution and use in source and binary forms, with or without
! 19: * modification, are permitted provided that the following conditions
! 20: * are met:
! 21: * 1. Redistributions of source code must retain the above copyright
! 22: * notice, this list of conditions and the following disclaimer.
! 23: * 2. Redistributions in binary form must reproduce the above copyright
! 24: * notice, this list of conditions and the following disclaimer in the
! 25: * documentation and/or other materials provided with the distribution.
! 26: * 3. Neither the name of the University nor the names of its contributors
! 27: * may be used to endorse or promote products derived from this software
! 28: * without specific prior written permission.
! 29: *
! 30: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 31: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 32: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 33: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 34: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 35: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 36: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 37: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 38: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 39: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 40: * SUCH DAMAGE.
! 41: *
! 42: * @(#)zsvar.h 8.1 (Berkeley) 6/11/93
! 43: */
! 44:
! 45: #ifndef _MAC68K_Z8530VAR_H_
! 46: #define _MAC68K_Z8530VAR_H_
! 47:
! 48: #ifdef _KERNEL
! 49: #include <mac68k/dev/z8530sc.h>
! 50:
! 51: /*
! 52: * Clock source info structure, added here so xzs_chanstate works
! 53: */
! 54: struct zsclksrc {
! 55: long clk; /* clock rate, in MHz, present on signal line */
! 56: int flags; /* Specifies how this source can be used
! 57: (RTxC divided, RTxC BRG, PCLK BRG, TRxC divided) and also if the source is "external" and if it
! 58: is changeable (by an ioctl ex.). The
! 59: source usage flags are used by the tty
! 60: child. The other bits tell zsloadchannelregs
! 61: if it should call an md signal source
! 62: changing routine. ZSC_VARIABLE says if
! 63: an ioctl should be able to change the
! 64: clock rate.*/
! 65: };
! 66: #define ZSC_PCLK 0x01
! 67: #define ZSC_RTXBRG 0x02
! 68: #define ZSC_RTXDIV 0x04
! 69: #define ZSC_TRXDIV 0x08
! 70: #define ZSC_VARIABLE 0x40
! 71: #define ZSC_EXTERN 0x80
! 72:
! 73: #define ZSC_BRG 0x03
! 74: #define ZSC_DIV 0x0c
! 75:
! 76: /*
! 77: * These are the machine-dependent (extended) variants of
! 78: * struct zs_chanstate and struct zsc_softc
! 79: */
! 80: struct xzs_chanstate {
! 81: /* machine-independent part (First!)*/
! 82: struct zs_chanstate xzs_cs;
! 83: /* machine-dependent extensions */
! 84: int cs_hwflags;
! 85: int cs_chip; /* type of chip */
! 86: /* Clock source info... */
! 87: int cs_clock_count; /* how many signal sources available */
! 88: struct zsclksrc cs_clocks[4]; /* info on available signal sources */
! 89: long cs_cclk_flag; /* flag for current clock source */
! 90: long cs_pclk_flag; /* flag for pending clock source */
! 91: int cs_csource; /* current source # */
! 92: int cs_psource; /* pending source # */
! 93: };
! 94:
! 95: struct zsc_softc {
! 96: struct device zsc_dev; /* required first: base device */
! 97: struct zs_chanstate *zsc_cs[2]; /* channel A and B soft state */
! 98: /* Machine-dependent part follows... */
! 99: struct xzs_chanstate xzsc_xcs_store[2];
! 100: };
! 101:
! 102: /*
! 103: * Functions to read and write individual registers in a channel.
! 104: * The ZS chip requires a 1.6 uSec. recovery time between accesses,
! 105: * and the Sun3 hardware does NOT take care of this for you.
! 106: * MacII hardware DOES dake care of the delay for us.
! 107: */
! 108:
! 109: u_char zs_read_reg(struct zs_chanstate *cs, u_char reg);
! 110: u_char zs_read_csr(struct zs_chanstate *cs);
! 111: u_char zs_read_data(struct zs_chanstate *cs);
! 112:
! 113: void zs_write_reg(struct zs_chanstate *cs, u_char reg, u_char val);
! 114: void zs_write_csr(struct zs_chanstate *cs, u_char val);
! 115: void zs_write_data(struct zs_chanstate *cs, u_char val);
! 116: #endif /* _KERNEL */
! 117:
! 118: /* XXX - Could define splzs() here instead of in psl.h */
! 119:
! 120: /* Hook for MD ioctl support */
! 121: int zsmdioctl (struct zs_chanstate *cs, u_long cmd, caddr_t data);
! 122: /* XXX - This is a bit gross... */
! 123: #define ZS_MD_IOCTL zsmdioctl(cs, cmd, data)
! 124:
! 125: /* Callback for "external" clock sources */
! 126: void zsmd_setclock(struct zs_chanstate *cs);
! 127: #define ZS_MD_SETCLK(cs) zsmd_setclock(cs)
! 128: #endif /* _KERNEL */
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