Annotation of sys/arch/macppc/dev/z8530sc.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: z8530sc.h,v 1.2 2003/06/02 23:27:49 millert Exp $ */
! 2: /* $NetBSD: z8530sc.h,v 1.15 2001/05/11 01:40:48 thorpej 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:
! 46: /*
! 47: * Function vector - per channel
! 48: */
! 49: struct zs_chanstate;
! 50: struct zsops {
! 51: void (*zsop_rxint)(struct zs_chanstate *);
! 52: /* receive char available */
! 53: void (*zsop_stint)(struct zs_chanstate *, int);
! 54: /* external/status */
! 55: void (*zsop_txint)(struct zs_chanstate *);
! 56: /* xmit buffer empty */
! 57: void (*zsop_softint)(struct zs_chanstate *);
! 58: /* process software interrupt */
! 59: };
! 60:
! 61: extern struct zsops zsops_null;
! 62:
! 63:
! 64: /*
! 65: * Software state, per zs channel.
! 66: */
! 67: struct zs_chanstate {
! 68:
! 69: /* Pointers to the device registers. */
! 70: volatile u_char *cs_reg_csr; /* ctrl, status, and reg. number. */
! 71: volatile u_char *cs_reg_data; /* data or numbered register */
! 72:
! 73: int cs_channel; /* sub-unit number */
! 74: void *cs_private; /* sub-driver data pointer */
! 75: struct zsops *cs_ops;
! 76:
! 77: int cs_brg_clk; /* BAUD Rate Generator clock
! 78: * (usually PCLK / 16) */
! 79: int cs_defspeed; /* default baud rate */
! 80: int cs_defcflag; /* default cflag */
! 81:
! 82: /*
! 83: * We must keep a copy of the write registers as they are
! 84: * mostly write-only and we sometimes need to set and clear
! 85: * individual bits (e.g., in WR3). Not all of these are
! 86: * needed but 16 bytes is cheap and this makes the addressing
! 87: * simpler. Unfortunately, we can only write to some registers
! 88: * when the chip is not actually transmitting, so whenever
! 89: * we are expecting a `transmit done' interrupt the preg array
! 90: * is allowed to `get ahead' of the current values. In a
! 91: * few places we must change the current value of a register,
! 92: * rather than (or in addition to) the pending value; for these
! 93: * cs_creg[] contains the current value.
! 94: */
! 95: u_char cs_creg[16]; /* current values */
! 96: u_char cs_preg[16]; /* pending values */
! 97: int cs_heldchange; /* change pending (creg != preg) */
! 98:
! 99: u_char cs_rr0; /* last rr0 processed */
! 100: u_char cs_rr0_delta; /* rr0 changes at status intr. */
! 101: u_char cs_rr0_mask; /* rr0 bits that stop output */
! 102: u_char cs_rr0_dcd; /* which bit to read as DCD */
! 103: u_char cs_rr0_cts; /* which bit to read as CTS */
! 104: u_char cs_rr0_pps; /* which bit to use for PPS */
! 105: /* the above is set only while CRTSCTS is enabled. */
! 106:
! 107: u_char cs_wr5_dtr; /* which bit to write as DTR */
! 108: u_char cs_wr5_rts; /* which bit to write as RTS */
! 109: /* the above is set only while CRTSCTS is enabled. */
! 110:
! 111: char cs_softreq; /* need soft interrupt call */
! 112: char cs_spare1; /* (for skippy :) */
! 113:
! 114: /* power management hooks */
! 115: int (*enable)(struct zs_chanstate *);
! 116: void (*disable)(struct zs_chanstate *);
! 117: int enabled;
! 118:
! 119: /* MD code might define a larger variant of this. */
! 120: };
! 121:
! 122: struct consdev;
! 123: struct zsc_attach_args {
! 124: char *type; /* type name 'serial', 'keyboard', 'mouse' */
! 125: int channel; /* two serial channels per zsc */
! 126: int hwflags; /* see definitions below */
! 127: /* `consdev' is only valid if ZS_HWFLAG_USE_CONSDEV is set */
! 128: struct consdev *consdev;
! 129: };
! 130: /* In case of split console devices, use these: */
! 131: #define ZS_HWFLAG_CONSOLE_INPUT 1
! 132: #define ZS_HWFLAG_CONSOLE_OUTPUT 2
! 133: #define ZS_HWFLAG_CONSOLE \
! 134: (ZS_HWFLAG_CONSOLE_INPUT | ZS_HWFLAG_CONSOLE_OUTPUT)
! 135: #define ZS_HWFLAG_NO_DCD 4 /* Ignore the DCD bit */
! 136: #define ZS_HWFLAG_NO_CTS 8 /* Ignore the CTS bit */
! 137: #define ZS_HWFLAG_RAW 16 /* advise raw mode */
! 138: #define ZS_HWFLAG_USE_CONSDEV 32 /* Use console ops from `consdev' */
! 139: #define ZS_HWFLAG_NORESET 64 /* Don't reset at attach time */
! 140:
! 141: int zsc_intr_soft(void *);
! 142: int zsc_intr_hard(void *);
! 143:
! 144: void zs_abort(struct zs_chanstate *);
! 145: void zs_break(struct zs_chanstate *, int);
! 146: void zs_iflush(struct zs_chanstate *);
! 147: void zs_loadchannelregs(struct zs_chanstate *);
! 148: int zs_set_speed(struct zs_chanstate *, int);
! 149: int zs_set_modes(struct zs_chanstate *, int);
! 150:
! 151: extern int zs_major;
! 152:
! 153: int zs_check_kgdb(struct zs_chanstate *, int);
! 154:
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