1 /*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (C) 2002-2004 5 * Hidetoshi Shimokawa. 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * 18 * This product includes software developed by Hidetoshi Shimokawa. 19 * 20 * 4. Neither the name of the author nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * $Id: dcons.h,v 1.15 2003/10/23 15:05:31 simokawa Exp $ 37 * $FreeBSD$ 38 */ 39 40 #if defined(_KERNEL) || defined(_BOOT) 41 #define V volatile 42 #else 43 #define V 44 #endif 45 46 #define DCONS_NPORT 2 47 #define DCONS_CON 0 48 #define DCONS_GDB 1 49 50 struct dcons_buf { 51 #define DCONS_VERSION 2 52 V u_int32_t version; 53 V u_int32_t ooffset[DCONS_NPORT]; 54 V u_int32_t ioffset[DCONS_NPORT]; 55 V u_int32_t osize[DCONS_NPORT]; 56 V u_int32_t isize[DCONS_NPORT]; 57 #define DCONS_MAGIC 0x64636f6e /* "dcon" */ 58 V u_int32_t magic; 59 #define DCONS_GEN_SHIFT (24) 60 #define DCONS_GEN_MASK (0xff) 61 #define DCONS_POS_MASK ((1<< DCONS_GEN_SHIFT) - 1) 62 V u_int32_t optr[DCONS_NPORT]; 63 V u_int32_t iptr[DCONS_NPORT]; 64 V char buf[0]; 65 }; 66 67 #define DCONS_CSR_VAL_VER 0x64636f /* "dco" */ 68 #define DCONS_CSR_KEY_HI 0x3a 69 #define DCONS_CSR_KEY_LO 0x3b 70 #define DCONS_CSR_KEY_RESET_HI 0x3c 71 #define DCONS_CSR_KEY_RESET_LO 0x3d 72 73 #define DCONS_HEADER_SIZE sizeof(struct dcons_buf) 74 #define DCONS_MAKE_PTR(x) htonl(((x)->gen << DCONS_GEN_SHIFT) | (x)->pos) 75 #define DCONS_NEXT_GEN(x) (((x) + 1) & DCONS_GEN_MASK) 76 77 struct dcons_ch { 78 u_int32_t size; 79 u_int32_t gen; 80 u_int32_t pos; 81 #if defined(_KERNEL) || defined(_BOOT) 82 V u_int32_t *ptr; 83 V char *buf; 84 #else 85 off_t buf; 86 #endif 87 }; 88 89 #define KEY_CTRLB 2 /* ^B */ 90 #define KEY_CR 13 /* CR '\r' */ 91 #define KEY_TILDE 126 /* ~ */ 92 #define STATE0 0 93 #define STATE1 1 94 #define STATE2 2 95 #define STATE3 3 96 97 #if defined(_KERNEL) || defined(_BOOT) 98 struct dcons_softc { 99 struct dcons_ch o, i; 100 int brk_state; 101 #define DC_GDB 1 102 int flags; 103 void *tty; 104 }; 105 106 int dcons_checkc(struct dcons_softc *); 107 int dcons_ischar(struct dcons_softc *); 108 void dcons_putc(struct dcons_softc *, int); 109 int dcons_load_buffer(struct dcons_buf *, int, struct dcons_softc *); 110 void dcons_init(struct dcons_buf *, int, struct dcons_softc *); 111 #endif 112