NetBSD-5.0.2/sys/dev/ic/cd18xxvar.h
/* $NetBSD: cd18xxvar.h,v 1.2 2008/05/29 14:51:27 mrg Exp $ */
/*
* Copyright (c) 1998, 2001 Matthew R. Green
* All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
/*
* cd18xxvar.h: header file for cirrus-logic CL-CD180/CD1864/CD1865 8
* port serial chip.
*/
#include <sys/tty.h>
/* allocated per-serial port */
struct cdtty_port {
struct tty *p_tty;
int p_swflags; /* TIOCFLAG_SOFTCAR, etc. */
int p_defspeed; /* default speed */
int p_defcflag; /* default termios cflag */
u_int p_r_hiwat; /* high water mark */
u_int p_r_lowat; /* low water mark */
u_char *volatile p_rbget; /* ring buffer get ptr */
u_char *volatile p_rbput; /* ring buffer put ptr */
volatile u_int p_rbavail; /* size available */
u_char *p_rbuf; /* ring buffer */
u_char *p_ebuf; /* end of ring buffer */
u_char * p_tba; /* transmit buffer address */
u_int p_tbc, /* transmit byte count */
p_heldtbc; /* held tbc; waiting for tx */
#define CDTTY_RING_SIZE 2048
u_int p_parityerr, /* number of parity errors */
p_frameerr, /* number of framing errors */
p_overflows, /* number of overruns */
p_floods; /* number of rbuf floods */
volatile u_char p_break, /* current break status */
p_needbreak, /* need to generate a break */
p_rx_flags, /* software state */
#define RX_TTY_BLOCKED 0x01
#define RX_TTY_OVERFLOWED 0x02
#define RX_IBUF_BLOCKED 0x04
#define RX_IBUF_OVERFLOWED 0x08
#define RX_ANY_BLOCK 0x0f
p_rx_ready, /* soft rx interrupt ready */
p_rx_busy,
p_tx_done, /* soft tx interrupt ready */
p_tx_busy,
p_tx_stopped,
p_st_check, /* soft modem interrupt ready */
p_heldchange; /* waiting to update regs */
/*
* cd18xx channel registers we keep a copy of, for writing in
* loadchannelregs().
*/
u_char p_srer, /* service request enable */
p_msvr, /* modem signal value */
p_msvr_cts, p_msvr_rts, p_msvr_dcd,
p_msvr_mask, p_msvr_active, p_msvr_delta,
p_cor1, /* channel option reg 1 */
p_cor2, /* channel option reg 2 */
p_cor3, /* channel option reg 3 */
p_mcor1, /* modem option reg 1 */
p_mcor1_dtr,
p_rbprh, /* recv bps high */
p_rbprl, /* recv bps low */
p_tbprh, /* xmit bps high */
p_tbprl, /* xmit bps low */
p_chanctl; /* chanctl command */
};
/* softc allocated per-cd18xx */
struct cd18xx_softc {
struct device sc_dev;
/* tag and handle for our registers (128 bytes) */
bus_space_tag_t sc_tag;
bus_space_handle_t sc_handle;
/*
* cd18xx has weird interrupt acknowledgement and configuration,
* so we have to defer this to our parent. this function must
* do whatever is required to genereate *iack signals that are
* required for the cd180. this probably also depends on the
* values of the sc_rsmr, sc_tsmr and sc_msmr variables. the
* function is called with the provided argument, and with any
* of the 4 #defines below, depending on the ack needing to be
* generated.
*/
u_char (*sc_ackfunc)(void *, int);
#define CD18xx_INTRACK_MxINT 0x01 /* modem interrupt */
#define CD18xx_INTRACK_TxINT 0x02 /* tx interrupt */
#define CD18xx_INTRACK_RxINT 0x04 /* rx (good data) interrupt */
#define CD18xx_INTRACK_REINT 0x08 /* rx (exception) interrupt */
void *sc_ackfunc_arg;
u_char sc_rsmr;
u_char sc_tsmr;
u_char sc_msmr;
u_int sc_osc;
/*
* everything above here needs to be setup by our caller, and
* everything below here is setup by the generic cd18xx code.
*/
u_int sc_chip_id; /* unique per-cd18xx value */
void *sc_si; /* softintr(9) cookie */
struct cdtty_port sc_ports[8];
u_char sc_pprh;
u_char sc_pprl;
};
/* hard interrupt, to be configured by our caller */
int cd18xx_hardintr(void *);
/* main attach routine called by the high level driver */
void cd18xx_attach(struct cd18xx_softc *);
/*
* device minor layout has bit 19 for dialout and bits 0..18 for the unit.
* the first 3 bits of the unit are the channel number inside a single
* cd18xx instance, and the remaining bits indicate the instance number.
*/
#define CD18XX_TTY(x) (minor(x) & 0x7ffff)
#define CD18XX_CHANNEL(x) (minor(x) & 7)
#define CD18XX_INSTANCE(x) ((minor(x) >> 3) & 0xffff)
#define CD18XX_DIALOUT(x) ((minor(x) & 0x80000) != 0)
/* short helpers for read/write */
#define cd18xx_read(sc, o) \
bus_space_read_1((sc)->sc_tag, (sc)->sc_handle, o)
#define cd18xx_read_multi(sc, o, b, c) \
bus_space_read_multi_1((sc)->sc_tag, (sc)->sc_handle, o, b, c)
#define cd18xx_write(sc, o, v) \
bus_space_write_1((sc)->sc_tag, (sc)->sc_handle, o, v)
#define cd18xx_write_multi(sc, o, b, c) \
bus_space_write_multi_1((sc)->sc_tag, (sc)->sc_handle, o, b, c)
/* set the current channel */
#define cd18xx_set_car(sc, c) \
do { \
bus_space_write_1((sc)->sc_tag, (sc)->sc_handle, CD18xx_CAR, c); \
delay(1); \
} while (0)
/* get the current channel */
#define cd18xx_get_gscr1_channel(sc) \
((bus_space_read_1((sc)->sc_tag, (sc)->sc_handle, CD18xx_GSCR1) >> 2)&7)