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 */ 38 39#if defined(_KERNEL) || defined(_BOOT) 40#define V volatile 41#else 42#define V 43#endif 44 45#define DCONS_NPORT 2 46#define DCONS_CON 0 47#define DCONS_GDB 1 48 49struct dcons_buf { 50#define DCONS_VERSION 2 51 V u_int32_t version; 52 V u_int32_t ooffset[DCONS_NPORT]; 53 V u_int32_t ioffset[DCONS_NPORT]; 54 V u_int32_t osize[DCONS_NPORT]; 55 V u_int32_t isize[DCONS_NPORT]; 56#define DCONS_MAGIC 0x64636f6e /* "dcon" */ 57 V u_int32_t magic; 58#define DCONS_GEN_SHIFT (24) 59#define DCONS_GEN_MASK (0xff) 60#define DCONS_POS_MASK ((1<< DCONS_GEN_SHIFT) - 1) 61 V u_int32_t optr[DCONS_NPORT]; 62 V u_int32_t iptr[DCONS_NPORT]; 63 V char buf[0]; 64}; 65 66#define DCONS_CSR_VAL_VER 0x64636f /* "dco" */ 67#define DCONS_CSR_KEY_HI 0x3a 68#define DCONS_CSR_KEY_LO 0x3b 69#define DCONS_CSR_KEY_RESET_HI 0x3c 70#define DCONS_CSR_KEY_RESET_LO 0x3d 71 72#define DCONS_HEADER_SIZE sizeof(struct dcons_buf) 73#define DCONS_MAKE_PTR(x) htonl(((x)->gen << DCONS_GEN_SHIFT) | (x)->pos) 74#define DCONS_NEXT_GEN(x) (((x) + 1) & DCONS_GEN_MASK) 75 76struct dcons_ch { 77 u_int32_t size; 78 u_int32_t gen; 79 u_int32_t pos; 80#if defined(_KERNEL) || defined(_BOOT) 81 V u_int32_t *ptr; 82 V char *buf; 83#else 84 off_t buf; 85#endif 86}; 87 88#define KEY_CTRLB 2 /* ^B */ 89#define KEY_CR 13 /* CR '\r' */ 90#define KEY_TILDE 126 /* ~ */ 91#define STATE0 0 92#define STATE1 1 93#define STATE2 2 94#define STATE3 3 95 96#if defined(_KERNEL) || defined(_BOOT) 97struct dcons_softc { 98 struct dcons_ch o, i; 99 int brk_state; 100#define DC_GDB 1 101 int flags; 102 void *tty; 103}; 104 105int dcons_checkc(struct dcons_softc *); 106int dcons_ischar(struct dcons_softc *); 107void dcons_putc(struct dcons_softc *, int); 108int dcons_load_buffer(struct dcons_buf *, int, struct dcons_softc *); 109void dcons_init(struct dcons_buf *, int, struct dcons_softc *); 110#endif 111