/* $OpenBSD: z8530sc.h,v 1.12 2017/04/30 13:04:49 mpi Exp $ */ /* $NetBSD: z8530sc.h,v 1.15 2001/05/11 01:40:48 thorpej Exp $ */ /* * Copyright (c) 1994 Gordon W. Ross * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This software was developed by the Computer Systems Engineering group * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and * contributed to Berkeley. * * All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Lawrence Berkeley Laboratory. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)zsvar.h 8.1 (Berkeley) 6/11/93 */ /* * Function vector - per channel */ struct zs_chanstate; struct zsops { void (*zsop_rxint)(struct zs_chanstate *); /* receive char available */ void (*zsop_stint)(struct zs_chanstate *, int); /* external/status */ void (*zsop_txint)(struct zs_chanstate *); /* xmit buffer empty */ void (*zsop_softint)(struct zs_chanstate *); /* process software interrupt */ }; extern struct zsops zsops_null; /* * Software state, per zs channel. */ struct zs_chanstate { /* Pointers to the device registers. */ volatile uint8_t *cs_reg_csr; /* ctrl, status, and reg. number. */ volatile uint8_t *cs_reg_data; /* data or numbered register */ int cs_channel; /* sub-unit number */ void *cs_private; /* sub-driver data pointer */ struct zsops *cs_ops; int cs_brg_clk; /* BAUD Rate Generator clock * (usually PCLK / 16) */ int cs_defspeed; /* default baud rate */ int cs_defcflag; /* default cflag */ /* * We must keep a copy of the write registers as they are * mostly write-only and we sometimes need to set and clear * individual bits (e.g., in WR3). Not all of these are * needed but 16 bytes is cheap and this makes the addressing * simpler. Unfortunately, we can only write to some registers * when the chip is not actually transmitting, so whenever * we are expecting a `transmit done' interrupt the preg array * is allowed to `get ahead' of the current values. In a * few places we must change the current value of a register, * rather than (or in addition to) the pending value; for these * cs_creg[] contains the current value. */ uint8_t cs_creg[17]; /* current values */ uint8_t cs_preg[17]; /* pending values */ int cs_heldchange; /* change pending (creg != preg) */ uint8_t cs_rr0; /* last rr0 processed */ uint8_t cs_rr0_delta; /* rr0 changes at status intr. */ uint8_t cs_rr0_mask; /* rr0 bits that stop output */ uint8_t cs_rr0_dcd; /* which bit to read as DCD */ uint8_t cs_rr0_cts; /* which bit to read as CTS */ uint8_t cs_rr0_pps; /* which bit to use for PPS */ /* the above is set only while CRTSCTS is enabled. */ uint8_t cs_wr5_dtr; /* which bit to write as DTR */ uint8_t cs_wr5_rts; /* which bit to write as RTS */ /* the above is set only while CRTSCTS is enabled. */ volatile uint8_t cs_softreq; /* need soft interrupt call */ char cs_cua; /* CUA mode flag */ /* * For strange systems that have oddly wired serial ports, we * provide a pointer to the channel state of the port that has * our status lines on it. */ struct zs_chanstate *cs_ctl_chan; /* power management hooks */ int (*enable)(struct zs_chanstate *); void (*disable)(struct zs_chanstate *); int enabled; /* MD code might define a larger variant of this. */ }; struct consdev; struct zsc_attach_args { char *type; /* type name 'serial', 'keyboard', 'mouse' */ int channel; /* two serial channels per zsc */ int hwflags; /* see definitions below */ /* `consdev' is only valid if ZS_HWFLAG_USE_CONSDEV is set */ struct consdev *consdev; }; /* In case of split console devices, use these: */ #define ZS_HWFLAG_CONSOLE_INPUT 1 #define ZS_HWFLAG_CONSOLE_OUTPUT 2 #define ZS_HWFLAG_CONSOLE \ (ZS_HWFLAG_CONSOLE_INPUT | ZS_HWFLAG_CONSOLE_OUTPUT) #define ZS_HWFLAG_NO_DCD 4 /* Ignore the DCD bit */ #define ZS_HWFLAG_NO_CTS 8 /* Ignore the CTS bit */ #define ZS_HWFLAG_RAW 16 /* advise raw mode */ #define ZS_HWFLAG_USE_CONSDEV 32 /* Use console ops from `consdev' */ #define ZS_HWFLAG_NORESET 64 /* Don't reset at attach time */ int zsc_intr_soft(void *); int zsc_intr_hard(void *); void zs_abort(struct zs_chanstate *); void zs_break(struct zs_chanstate *, int); void zs_iflush(struct zs_chanstate *); void zs_loadchannelregs(struct zs_chanstate *); int zs_set_speed(struct zs_chanstate *, int); int zs_set_modes(struct zs_chanstate *, int); extern int zs_major;
