Add dumb console driver and related bits.

dcons(4): very simple console and gdb port driver
dcons_crom(4): FireWire attachment
dconschat(8): User interface to dcons

Tested with: i386, i386-PAE, and sparc64.

1 files changed, 97 insertions, 0 deletions

diff --git a/sys/dev/dcons/dcons.h b/sys/dev/dcons/dcons.h
new file mode 100644
index 000000000000..73265bc816f0
--- /dev/null
+++ b/sys/dev/dcons/dcons.h
@@ -0,0 +1,97 @@
+/*
+ * Copyright (C) 2002
+ * 	Hidetoshi Shimokawa. All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *
+ *	This product includes software developed by Hidetoshi Shimokawa.
+ *
+ * 4. Neither the name of the author nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * $Id: dcons.h,v 1.15 2003/10/23 15:05:31 simokawa Exp $
+ * $FreeBSD$
+ */
+
+#ifdef _KERNEL
+#define	V volatile
+#else
+#define	V
+#endif
+
+#define DCONS_NPORT	2
+#define DCONS_CON	0
+#define DCONS_GDB	1
+
+struct dcons_buf {
+#define DCONS_VERSION 2
+	V u_int32_t version;
+	V u_int32_t ooffset[DCONS_NPORT];
+	V u_int32_t ioffset[DCONS_NPORT];
+	V u_int32_t osize[DCONS_NPORT];
+	V u_int32_t isize[DCONS_NPORT];
+#define DCONS_MAGIC 0x64636f6e	/* "dcon" */
+	V u_int32_t magic;
+#define DCONS_GEN_SHIFT		(24)
+#define DCONS_GEN_MASK		(0xff)
+#define DCONS_POS_MASK	((1<< DCONS_GEN_SHIFT) - 1)
+	V u_int32_t optr[DCONS_NPORT];
+	V u_int32_t iptr[DCONS_NPORT];
+	V char buf[0];
+};
+
+#define DCONS_CSR_VAL_VER	0x64636f /* "dco" */
+#define DCONS_CSR_KEY_HI	0x3a
+#define DCONS_CSR_KEY_LO	0x3b
+
+#define	DCONS_HEADER_SIZE sizeof(struct dcons_buf)
+#define DCONS_MAKE_PTR(x)	htonl(((x)->gen << DCONS_GEN_SHIFT) | (x)->pos)
+#define	DCONS_NEXT_GEN(x)	(((x) + 1) & DCONS_GEN_MASK)
+
+struct dcons_ch {
+	u_int32_t size;
+	u_int32_t gen;
+	u_int32_t pos;
+#ifdef _KERNEL
+	V u_int32_t *ptr;
+	V char *buf;
+#else
+	off_t buf;
+#endif
+};
+
+#define KEY_CTRLB	2	/* ^B */
+#define KEY_CR		13	/* CR '\r' */
+#define KEY_TILDE	126	/* ~ */
+#define STATE0		0
+#define STATE1		1
+#define STATE2		2
+
+#ifdef _KERNEL
+extern struct dcons_buf *dcons_buf;
+extern size_t dcons_bufsize;
+extern bus_dma_tag_t dcons_dma_tag;
+extern bus_dmamap_t dcons_dma_map;
+#endif