5d4f3fa900
8 port chip. this is used in several sbus (sparc) serial boards, as well as an 8 port isa card from riscom. sio16 (sbus) frontend coming shortly. this is heavily based on the com and zs drivers.
181 lines
6.2 KiB
C
181 lines
6.2 KiB
C
/* $NetBSD: cd18xxvar.h,v 1.1 2001/10/03 04:25:30 mrg Exp $ */
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/*
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* Copyright (c) 1998, 2001 Matthew R. Green
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* cd18xxvar.h: header file for cirrus-logic CL-CD180/CD1864/CD1865 8
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* port serial chip.
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*/
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#include <sys/tty.h>
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/* allocated per-serial port */
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struct cdtty_port {
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struct tty *p_tty;
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int p_swflags; /* TIOCFLAG_SOFTCAR, etc. */
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int p_defspeed; /* default speed */
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int p_defcflag; /* default termios cflag */
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u_int p_r_hiwat; /* high water mark */
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u_int p_r_lowat; /* low water mark */
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u_char *volatile p_rbget; /* ring buffer get ptr */
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u_char *volatile p_rbput; /* ring buffer put ptr */
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volatile u_int p_rbavail; /* size available */
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u_char *p_rbuf; /* ring buffer */
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u_char *p_ebuf; /* end of ring buffer */
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u_char * p_tba; /* transmit buffer address */
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u_int p_tbc, /* transmit byte count */
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p_heldtbc; /* held tbc; waiting for tx */
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#define CDTTY_RING_SIZE 2048
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u_int p_parityerr, /* number of parity errors */
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p_frameerr, /* number of framing errors */
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p_overflows, /* number of overruns */
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p_floods; /* number of rbuf floods */
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volatile u_char p_break, /* current break status */
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p_needbreak, /* need to generate a break */
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p_rx_flags, /* software state */
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#define RX_TTY_BLOCKED 0x01
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#define RX_TTY_OVERFLOWED 0x02
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#define RX_IBUF_BLOCKED 0x04
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#define RX_IBUF_OVERFLOWED 0x08
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#define RX_ANY_BLOCK 0x0f
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p_rx_ready, /* soft rx interrupt ready */
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p_rx_busy,
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p_tx_done, /* soft tx interrupt ready */
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p_tx_busy,
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p_tx_stopped,
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p_st_check, /* soft modem interrupt ready */
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p_heldchange; /* waiting to update regs */
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/*
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* cd18xx channel registers we keep a copy of, for writing in
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* loadchannelregs().
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*/
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u_char p_srer, /* service request enable */
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p_msvr, /* modem signal value */
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p_msvr_cts, p_msvr_rts, p_msvr_dcd,
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p_msvr_mask, p_msvr_active, p_msvr_delta,
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p_cor1, /* channel option reg 1 */
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p_cor2, /* channel option reg 2 */
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p_cor3, /* channel option reg 3 */
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p_mcor1, /* modem option reg 1 */
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p_mcor1_dtr,
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p_rbprh, /* recv bps high */
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p_rbprl, /* recv bps low */
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p_tbprh, /* xmit bps high */
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p_tbprl, /* xmit bps low */
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p_chanctl; /* chanctl command */
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};
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/* softc allocated per-cd18xx */
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struct cd18xx_softc {
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struct device sc_dev;
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/* tag and handle for our registers (128 bytes) */
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bus_space_tag_t sc_tag;
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bus_space_handle_t sc_handle;
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/*
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* cd18xx has weird interrupt acknowledgement and configuration,
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* so we have to defer this to our parent. this function must
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* do whatever is required to genereate *iack signals that are
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* required for the cd180. this probably also depends on the
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* values of the sc_rsmr, sc_tsmr and sc_msmr variables. the
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* function is called with the provided argument, and with any
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* of the 4 #defines below, depending on the ack needing to be
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* generated.
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*/
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u_char (*sc_ackfunc)(void *, int);
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#define CD18xx_INTRACK_MxINT 0x01 /* modem interrupt */
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#define CD18xx_INTRACK_TxINT 0x02 /* tx interrupt */
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#define CD18xx_INTRACK_RxINT 0x04 /* rx (good data) interrupt */
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#define CD18xx_INTRACK_REINT 0x08 /* rx (exception) interrupt */
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void *sc_ackfunc_arg;
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u_char sc_rsmr;
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u_char sc_tsmr;
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u_char sc_msmr;
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u_int sc_osc;
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/*
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* everything above here needs to be setup by our caller, and
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* everything below here is setup by the generic cd18xx code.
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*/
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u_int sc_chip_id; /* unique per-cd18xx value */
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void *sc_si; /* softintr(9) cookie */
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struct cdtty_port sc_ports[8];
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u_char sc_pprh;
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u_char sc_pprl;
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};
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/* hard interrupt, to be configured by our caller */
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int cd18xx_hardintr(void *);
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/* main attach routine called by the high level driver */
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void cd18xx_attach(struct cd18xx_softc *);
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/*
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* device minor layout has bit 19 for dialout and bits 0..18 for the unit.
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* the first 3 bits of the unit are the channel number inside a single
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* cd18xx instance, and the remaining bits indicate the instance number.
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*/
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#define CD18XX_TTY(x) (minor(x) & 0x7ffff)
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#define CD18XX_CHANNEL(x) (minor(x) & 7)
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#define CD18XX_INSTANCE(x) ((minor(x) >> 3) & 0xffff)
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#define CD18XX_DIALOUT(x) ((minor(x) & 0x80000) != 0)
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/* short helpers for read/write */
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#define cd18xx_read(sc, o) \
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bus_space_read_1((sc)->sc_tag, (sc)->sc_handle, o)
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#define cd18xx_read_multi(sc, o, b, c) \
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bus_space_read_multi_1((sc)->sc_tag, (sc)->sc_handle, o, b, c)
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#define cd18xx_write(sc, o, v) \
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bus_space_write_1((sc)->sc_tag, (sc)->sc_handle, o, v)
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#define cd18xx_write_multi(sc, o, b, c) \
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bus_space_write_multi_1((sc)->sc_tag, (sc)->sc_handle, o, b, c)
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/* set the current channel */
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#define cd18xx_set_car(sc, c) \
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do { \
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bus_space_write_1((sc)->sc_tag, (sc)->sc_handle, CD18xx_CAR, c); \
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delay(1); \
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} while (0)
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/* get the current channel */
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#define cd18xx_get_gscr1_channel(sc) \
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((bus_space_read_1((sc)->sc_tag, (sc)->sc_handle, CD18xx_GSCR1) >> 2)&7)
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