1 /* 2 * Copyright (C) 2002-2004 3 * Hidetoshi Shimokawa. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * 16 * This product includes software developed by Hidetoshi Shimokawa. 17 * 18 * 4. Neither the name of the author nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * $Id: dcons.h,v 1.15 2003/10/23 15:05:31 simokawa Exp $ 35 * $FreeBSD: src/sys/dev/dcons/dcons.h,v 1.4 2004/10/22 15:03:22 simokawa Exp $ 36 * $DragonFly: src/sys/dev/misc/dcons/dcons.h,v 1.2 2004/10/25 13:53:26 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 49 struct 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 70 #define DCONS_HEADER_SIZE sizeof(struct dcons_buf) 71 #define DCONS_MAKE_PTR(x) htonl(((x)->gen << DCONS_GEN_SHIFT) | (x)->pos) 72 #define DCONS_NEXT_GEN(x) (((x) + 1) & DCONS_GEN_MASK) 73 74 struct dcons_ch { 75 u_int32_t size; 76 u_int32_t gen; 77 u_int32_t pos; 78 #if defined(_KERNEL) || defined(_BOOT) 79 V u_int32_t *ptr; 80 V char *buf; 81 #else 82 off_t buf; 83 #endif 84 }; 85 86 #define KEY_CTRLB 2 /* ^B */ 87 #define KEY_CR 13 /* CR '\r' */ 88 #define KEY_TILDE 126 /* ~ */ 89 #define STATE0 0 90 #define STATE1 1 91 #define STATE2 2 92 93 #if defined(_KERNEL) || defined(_BOOT) 94 struct dcons_softc { 95 struct dcons_ch o, i; 96 int brk_state; 97 #define DC_GDB 1 98 int flags; 99 void *dev; 100 }; 101 102 int dcons_checkc(struct dcons_softc *); 103 int dcons_ischar(struct dcons_softc *); 104 void dcons_putc(struct dcons_softc *, int); 105 int dcons_load_buffer(struct dcons_buf *, int, struct dcons_softc *); 106 void dcons_init(struct dcons_buf *, int, struct dcons_softc *); 107 #endif 108