Annotation of sys/arch/sparc64/include/z8530var.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: z8530var.h,v 1.7 2005/12/28 22:39:52 miod Exp $ */
! 2: /* $NetBSD: z8530var.h,v 1.4 2000/11/08 23:41:42 eeh Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1992, 1993
! 6: * The Regents of the University of California. All rights reserved.
! 7: *
! 8: * This software was developed by the Computer Systems Engineering group
! 9: * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
! 10: * contributed to Berkeley.
! 11: *
! 12: * All advertising materials mentioning features or use of this software
! 13: * must display the following acknowledgement:
! 14: * This product includes software developed by the University of
! 15: * California, Lawrence Berkeley Laboratory.
! 16: *
! 17: * Redistribution and use in source and binary forms, with or without
! 18: * modification, are permitted provided that the following conditions
! 19: * are met:
! 20: * 1. Redistributions of source code must retain the above copyright
! 21: * notice, this list of conditions and the following disclaimer.
! 22: * 2. Redistributions in binary form must reproduce the above copyright
! 23: * notice, this list of conditions and the following disclaimer in the
! 24: * documentation and/or other materials provided with the distribution.
! 25: * 3. Neither the name of the University nor the names of its contributors
! 26: * may be used to endorse or promote products derived from this software
! 27: * without specific prior written permission.
! 28: *
! 29: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 30: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 31: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 32: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 33: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 34: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 35: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 36: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 37: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 38: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 39: * SUCH DAMAGE.
! 40: *
! 41: * @(#)zsvar.h 8.1 (Berkeley) 6/11/93
! 42: */
! 43:
! 44: #include <machine/bus.h>
! 45: #include <sparc64/dev/z8530sc.h>
! 46:
! 47: struct zsc_softc {
! 48: struct device zsc_dev; /* base device */
! 49: bus_space_tag_t zsc_bustag; /* bus space/dma tags */
! 50: bus_dma_tag_t zsc_dmatag;
! 51: struct zs_chanstate *zsc_cs[2]; /* channel A and B soft state */
! 52:
! 53: /* Machine-dependent part follows... */
! 54: void *zsc_softintr;
! 55: int zsc_promunit; /* PROM's view of zs devices */
! 56: int zsc_node; /* PROM node, if any */
! 57: struct zs_chanstate zsc_cs_store[2];
! 58: };
! 59:
! 60: /*
! 61: * Functions to read and write individual registers in a channel.
! 62: * The ZS chip requires a 1.6 uSec. recovery time between accesses.
! 63: * On the SparcStation the recovery time is handled in hardware.
! 64: * On the older Sun4 machine it isn't, and software must do it.
! 65: *
! 66: * However, it *is* a problem on some Sun4m's (i.e. the SS20) (XXX: why?).
! 67: * Thus we leave in the delay (done in the functions below).
! 68: * XXX: (ABB) Think about this more.
! 69: *
! 70: * The functions below could be macros instead if we are concerned
! 71: * about the function call overhead where ZS_DELAY does nothing.
! 72: */
! 73:
! 74: u_char zs_read_reg(struct zs_chanstate *cs, u_char reg);
! 75: u_char zs_read_csr(struct zs_chanstate *cs);
! 76: u_char zs_read_data(struct zs_chanstate *cs);
! 77:
! 78: void zs_write_reg(struct zs_chanstate *cs, u_char reg, u_char val);
! 79: void zs_write_csr(struct zs_chanstate *cs, u_char val);
! 80: void zs_write_data(struct zs_chanstate *cs, u_char val);
! 81:
! 82: /* The sparc has splzs() in psl.h */
! 83:
! 84: /* We want to call it "zs" instead of "zsc" (sigh). */
! 85: #ifndef ZSCCF_CHANNEL
! 86: #define ZSCCF_CHANNEL 0
! 87: #define ZSCCF_CHANNEL_DEFAULT -1
! 88: #endif
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