1 /* $NetBSD: clmpccvar.h,v 1.13 2012/10/27 17:18:20 chs Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Steve C. Woodford. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef __clmpccvar_h 33 #define __clmpccvar_h 34 35 36 /* Buffer size for character buffer */ 37 #define CLMPCC_RING_SIZE 512 38 39 /* How many channels per chip */ 40 #define CLMPCC_NUM_CHANS 4 41 42 /* Reasons for calling the MD code's iack hook function */ 43 #define CLMPCC_IACK_MODEM 0 44 #define CLMPCC_IACK_RX 1 45 #define CLMPCC_IACK_TX 2 46 47 48 struct clmpcc_softc; 49 50 /* 51 * Each channel is represented by one of the following structures 52 */ 53 struct clmpcc_chan { 54 struct tty *ch_tty; /* This channel's tty structure */ 55 struct clmpcc_softc *ch_sc; /* Pointer to chip's softc structure */ 56 u_char ch_car; /* Channel number (CD2400_REG_CAR) */ 57 u_char ch_openflags; /* Persistent TIOC flags */ 58 volatile u_short ch_flags; /* Various channel-specific flags */ 59 #define CLMPCC_FLG_IS_CONSOLE 0x0001 /* Channel is system console */ 60 #define CLMPCC_FLG_START_BREAK 0x0002 61 #define CLMPCC_FLG_END_BREAK 0x0004 62 #define CLMPCC_FLG_FIFO_CLEAR 0x0008 63 #define CLMPCC_FLG_UPDATE_PARMS 0x0010 64 #define CLMPCC_FLG_NEED_INIT 0x0020 65 66 u_char ch_tx_done; 67 68 u_char ch_control; 69 70 /* New port parameters wait here until written by the Tx ISR */ 71 u_char ch_tcor; 72 u_char ch_tbpr; 73 u_char ch_rcor; 74 u_char ch_rbpr; 75 u_char ch_cor1; 76 u_char ch_cor2; 77 u_char ch_cor3; 78 u_char ch_cor4; /* Current Rx Fifo threshold */ 79 u_char ch_cor5; 80 81 u_int8_t *ch_ibuf; /* Start of input ring buffer */ 82 u_int8_t *ch_ibuf_end; /* End of input ring buffer */ 83 u_int8_t *ch_ibuf_rd; /* Input buffer tail (reader) */ 84 u_int8_t *ch_ibuf_wr; /* Input buffer head (writer) */ 85 86 u_int8_t *ch_obuf_addr; /* Output buffer address */ 87 u_int ch_obuf_size; /* Output buffer size (in bytes) */ 88 }; 89 90 91 struct clmpcc_softc { 92 device_t sc_dev; 93 94 /* 95 * The bus/MD-specific attachment code must initialise the 96 * following fields before calling 'clmpcc_attach_subr()'. 97 */ 98 bus_space_tag_t sc_iot; /* Tag for parent bus */ 99 bus_space_handle_t sc_ioh; /* Handle for chip's regs */ 100 void *sc_data; /* MD-specific data */ 101 int sc_clk; /* Clock-rate, in Hz */ 102 struct evcnt *sc_evcnt; /* Parent Event Counter (or NULL) */ 103 u_char sc_vector_base; /* Vector base reg, or 0 for auto */ 104 u_char sc_rpilr; /* Receive Priority Interrupt Level */ 105 u_char sc_tpilr; /* Transmit Priority Interrupt Level */ 106 u_char sc_mpilr; /* Modem Priority Interrupt Level */ 107 int sc_swaprtsdtr; /* Non-zero if RTS and DTR swapped */ 108 u_int sc_byteswap; /* One of the following ... */ 109 #define CLMPCC_BYTESWAP_LOW 0x00 /* *byteswap pin is low */ 110 #define CLMPCC_BYTESWAP_HIGH 0x03 /* *byteswap pin is high */ 111 112 void *sc_softintr_cookie; 113 114 /* Called when an interrupt has to be acknowledged in polled mode. */ 115 void (*sc_iackhook)(struct clmpcc_softc *, int); 116 117 /* 118 * No user-serviceable parts below 119 */ 120 struct clmpcc_chan sc_chans[CLMPCC_NUM_CHANS]; 121 }; 122 123 extern void clmpcc_attach(struct clmpcc_softc *); 124 extern int clmpcc_cnattach(struct clmpcc_softc *, int, int); 125 extern int clmpcc_rxintr(void *); 126 extern int clmpcc_txintr(void *); 127 extern int clmpcc_mdintr(void *); 128 extern void clmpcc_softintr(void *); 129 130 #endif /* __clmpccvar_h */ 131