/* $NetBSD: cd18xxvar.h,v 1.4 2012/10/27 17:18:19 chs 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 /* 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 { device_t 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)