1 /* $NetBSD: cd18xxvar.h,v 1.1 2001/10/03 04:25:30 mrg Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 2001 Matthew R. Green 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 23 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 25 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 /* 32 * cd18xxvar.h: header file for cirrus-logic CL-CD180/CD1864/CD1865 8 33 * port serial chip. 34 */ 35 36 #include <sys/tty.h> 37 38 /* allocated per-serial port */ 39 struct cdtty_port { 40 struct tty *p_tty; 41 42 int p_swflags; /* TIOCFLAG_SOFTCAR, etc. */ 43 int p_defspeed; /* default speed */ 44 int p_defcflag; /* default termios cflag */ 45 46 u_int p_r_hiwat; /* high water mark */ 47 u_int p_r_lowat; /* low water mark */ 48 u_char *volatile p_rbget; /* ring buffer get ptr */ 49 u_char *volatile p_rbput; /* ring buffer put ptr */ 50 volatile u_int p_rbavail; /* size available */ 51 u_char *p_rbuf; /* ring buffer */ 52 u_char *p_ebuf; /* end of ring buffer */ 53 54 u_char * p_tba; /* transmit buffer address */ 55 u_int p_tbc, /* transmit byte count */ 56 p_heldtbc; /* held tbc; waiting for tx */ 57 #define CDTTY_RING_SIZE 2048 58 59 u_int p_parityerr, /* number of parity errors */ 60 p_frameerr, /* number of framing errors */ 61 p_overflows, /* number of overruns */ 62 p_floods; /* number of rbuf floods */ 63 64 volatile u_char p_break, /* current break status */ 65 p_needbreak, /* need to generate a break */ 66 p_rx_flags, /* software state */ 67 #define RX_TTY_BLOCKED 0x01 68 #define RX_TTY_OVERFLOWED 0x02 69 #define RX_IBUF_BLOCKED 0x04 70 #define RX_IBUF_OVERFLOWED 0x08 71 #define RX_ANY_BLOCK 0x0f 72 p_rx_ready, /* soft rx interrupt ready */ 73 p_rx_busy, 74 p_tx_done, /* soft tx interrupt ready */ 75 p_tx_busy, 76 p_tx_stopped, 77 p_st_check, /* soft modem interrupt ready */ 78 p_heldchange; /* waiting to update regs */ 79 80 /* 81 * cd18xx channel registers we keep a copy of, for writing in 82 * loadchannelregs(). 83 */ 84 u_char p_srer, /* service request enable */ 85 p_msvr, /* modem signal value */ 86 p_msvr_cts, p_msvr_rts, p_msvr_dcd, 87 p_msvr_mask, p_msvr_active, p_msvr_delta, 88 p_cor1, /* channel option reg 1 */ 89 p_cor2, /* channel option reg 2 */ 90 p_cor3, /* channel option reg 3 */ 91 p_mcor1, /* modem option reg 1 */ 92 p_mcor1_dtr, 93 p_rbprh, /* recv bps high */ 94 p_rbprl, /* recv bps low */ 95 p_tbprh, /* xmit bps high */ 96 p_tbprl, /* xmit bps low */ 97 p_chanctl; /* chanctl command */ 98 }; 99 100 /* softc allocated per-cd18xx */ 101 struct cd18xx_softc { 102 struct device sc_dev; 103 104 /* tag and handle for our registers (128 bytes) */ 105 bus_space_tag_t sc_tag; 106 bus_space_handle_t sc_handle; 107 108 /* 109 * cd18xx has weird interrupt acknowledgement and configuration, 110 * so we have to defer this to our parent. this function must 111 * do whatever is required to genereate *iack signals that are 112 * required for the cd180. this probably also depends on the 113 * values of the sc_rsmr, sc_tsmr and sc_msmr variables. the 114 * function is called with the provided argument, and with any 115 * of the 4 #defines below, depending on the ack needing to be 116 * generated. 117 */ 118 u_char (*sc_ackfunc)(void *, int); 119 #define CD18xx_INTRACK_MxINT 0x01 /* modem interrupt */ 120 #define CD18xx_INTRACK_TxINT 0x02 /* tx interrupt */ 121 #define CD18xx_INTRACK_RxINT 0x04 /* rx (good data) interrupt */ 122 #define CD18xx_INTRACK_REINT 0x08 /* rx (exception) interrupt */ 123 void *sc_ackfunc_arg; 124 125 u_char sc_rsmr; 126 u_char sc_tsmr; 127 u_char sc_msmr; 128 129 u_int sc_osc; 130 131 /* 132 * everything above here needs to be setup by our caller, and 133 * everything below here is setup by the generic cd18xx code. 134 */ 135 u_int sc_chip_id; /* unique per-cd18xx value */ 136 void *sc_si; /* softintr(9) cookie */ 137 138 struct cdtty_port sc_ports[8]; 139 140 u_char sc_pprh; 141 u_char sc_pprl; 142 }; 143 144 /* hard interrupt, to be configured by our caller */ 145 int cd18xx_hardintr(void *); 146 147 /* main attach routine called by the high level driver */ 148 void cd18xx_attach(struct cd18xx_softc *); 149 150 /* 151 * device minor layout has bit 19 for dialout and bits 0..18 for the unit. 152 * the first 3 bits of the unit are the channel number inside a single 153 * cd18xx instance, and the remaining bits indicate the instance number. 154 */ 155 #define CD18XX_TTY(x) (minor(x) & 0x7ffff) 156 #define CD18XX_CHANNEL(x) (minor(x) & 7) 157 #define CD18XX_INSTANCE(x) ((minor(x) >> 3) & 0xffff) 158 #define CD18XX_DIALOUT(x) ((minor(x) & 0x80000) != 0) 159 160 /* short helpers for read/write */ 161 #define cd18xx_read(sc, o) \ 162 bus_space_read_1((sc)->sc_tag, (sc)->sc_handle, o) 163 #define cd18xx_read_multi(sc, o, b, c) \ 164 bus_space_read_multi_1((sc)->sc_tag, (sc)->sc_handle, o, b, c) 165 166 #define cd18xx_write(sc, o, v) \ 167 bus_space_write_1((sc)->sc_tag, (sc)->sc_handle, o, v) 168 #define cd18xx_write_multi(sc, o, b, c) \ 169 bus_space_write_multi_1((sc)->sc_tag, (sc)->sc_handle, o, b, c) 170 171 /* set the current channel */ 172 #define cd18xx_set_car(sc, c) \ 173 do { \ 174 bus_space_write_1((sc)->sc_tag, (sc)->sc_handle, CD18xx_CAR, c); \ 175 delay(1); \ 176 } while (0) 177 178 /* get the current channel */ 179 #define cd18xx_get_gscr1_channel(sc) \ 180 ((bus_space_read_1((sc)->sc_tag, (sc)->sc_handle, CD18xx_GSCR1) >> 2)&7) 181