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, 224 insertions, 0 deletions

diff --git a/sys/dev/dcons/dcons_crom.c b/sys/dev/dcons/dcons_crom.c
new file mode 100644
index 0000000..d7cd502
--- /dev/null
+++ b/sys/dev/dcons/dcons_crom.c
@@ -0,0 +1,224 @@
+/*
+ * Copyright (C) 2003
+ * 	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_crom.c,v 1.8 2003/10/23 15:47:21 simokawa Exp $
+ * $FreeBSD$
+ */
+
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/systm.h>
+#include <sys/types.h>
+#include <sys/conf.h>
+#include <sys/malloc.h>
+
+#include <sys/bus.h>
+#include <machine/bus.h>
+
+#include <dev/firewire/firewire.h>
+#include <dev/firewire/firewirereg.h>
+#include <dev/firewire/iec13213.h>
+#include <dev/dcons/dcons.h>
+
+static bus_addr_t dcons_paddr;
+
+#ifndef CSRVAL_VENDOR_PRIVATE
+#define NEED_NEW_DRIVER
+#endif
+
+#define ADDR_HI(x)	(((x) >> 24) & 0xffffff)
+#define ADDR_LO(x)	((x) & 0xffffff)
+
+struct dcons_crom_softc {
+        struct firewire_dev_comm fd;
+	struct crom_chunk unit;
+	struct crom_chunk spec;
+	struct crom_chunk ver;
+	bus_dma_tag_t dma_tag;
+	bus_dmamap_t dma_map;
+	bus_addr_t bus_addr;
+};
+
+static void
+dcons_crom_identify(driver_t *driver, device_t parent)
+{
+	BUS_ADD_CHILD(parent, 0, "dcons_crom", device_get_unit(parent));
+}
+
+static int
+dcons_crom_probe(device_t dev)
+{
+	device_t pa;
+
+	pa = device_get_parent(dev);
+	if(device_get_unit(dev) != device_get_unit(pa)){
+		return(ENXIO);
+	}
+
+	device_set_desc(dev, "dcons configuration ROM");
+	return (0);
+}
+
+#ifndef NEED_NEW_DRIVER
+static void
+dcons_crom_post_busreset(void *arg)
+{
+	struct dcons_crom_softc *sc;
+	struct crom_src *src;
+	struct crom_chunk *root;
+
+	sc = (struct dcons_crom_softc *) arg;
+	src = sc->fd.fc->crom_src;
+	root = sc->fd.fc->crom_root;
+
+	bzero(&sc->unit, sizeof(struct crom_chunk));
+
+	crom_add_chunk(src, root, &sc->unit, CROM_UDIR);
+	crom_add_entry(&sc->unit, CSRKEY_SPEC, CSRVAL_VENDOR_PRIVATE);
+	crom_add_simple_text(src, &sc->unit, &sc->spec, "FreeBSD");
+	crom_add_entry(&sc->unit, CSRKEY_VER, DCONS_CSR_VAL_VER);
+	crom_add_simple_text(src, &sc->unit, &sc->ver, "dcons");
+	crom_add_entry(&sc->unit, DCONS_CSR_KEY_HI, ADDR_HI(dcons_paddr));
+	crom_add_entry(&sc->unit, DCONS_CSR_KEY_LO, ADDR_LO(dcons_paddr));
+}
+#endif
+
+static void
+dmamap_cb(void *arg, bus_dma_segment_t *segments, int seg, int error)
+{
+	bus_addr_t *ptr;
+
+	if (error)
+		printf("dcons_dmamap_cb: error=%d\n", error);
+
+	ptr = (bus_addr_t *) arg;
+	*ptr = segments[0].ds_addr;
+}
+
+static int
+dcons_crom_attach(device_t dev)
+{
+#ifdef NEED_NEW_DRIVER
+	printf("dcons_crom: you need newer firewire driver\n");
+	return (-1);
+#else
+	struct dcons_crom_softc *sc;
+
+        sc = (struct dcons_crom_softc *) device_get_softc(dev);
+	sc->fd.fc = device_get_ivars(dev);
+	sc->fd.dev = dev;
+	sc->fd.post_explore = NULL;
+	sc->fd.post_busreset = (void *) dcons_crom_post_busreset;
+
+	/* map dcons buffer */
+	bus_dma_tag_create(
+		/*parent*/ sc->fd.fc->dmat,
+		/*alignment*/ sizeof(u_int32_t),
+		/*boundary*/ 0,
+		/*lowaddr*/ BUS_SPACE_MAXADDR,
+		/*highaddr*/ BUS_SPACE_MAXADDR,
+		/*filter*/NULL, /*filterarg*/NULL,
+		/*maxsize*/ dcons_bufsize,
+		/*nsegments*/ 1,
+		/*maxsegsz*/ BUS_SPACE_MAXSIZE_32BIT,
+		/*flags*/ BUS_DMA_ALLOCNOW,
+#if __FreeBSD_version >= 501102
+		/*lockfunc*/busdma_lock_mutex,
+		/*lockarg*/&Giant,
+#endif
+		&sc->dma_tag);
+	bus_dmamap_create(sc->dma_tag, 0, &sc->dma_map);
+	bus_dmamap_load(sc->dma_tag, sc->dma_map,
+	    (void *)dcons_buf, dcons_bufsize,
+	    dmamap_cb, &sc->bus_addr, 0);
+	bus_dmamap_sync(sc->dma_tag, sc->dma_map, BUS_DMASYNC_PREWRITE);
+	device_printf(sc->fd.dev,
+#if __FreeBSD_version < 500000
+	    "bus_addr 0x%x\n", sc->bus_addr);
+#else
+	    "bus_addr 0x%jx\n", (uintmax_t)sc->bus_addr);
+#endif
+	if (dcons_paddr != 0) {
+		/* XXX */
+		device_printf(sc->fd.dev, "dcons_paddr is already set\n");
+		return (0);
+	}
+	dcons_dma_tag = sc->dma_tag;
+	dcons_dma_map = sc->dma_map;
+	dcons_paddr = sc->bus_addr;
+	return (0);
+#endif
+}
+
+static int
+dcons_crom_detach(device_t dev)
+{
+	struct dcons_crom_softc *sc;
+
+        sc = (struct dcons_crom_softc *) device_get_softc(dev);
+	sc->fd.post_busreset = NULL;
+
+	/* XXX */
+	if (dcons_dma_tag == sc->dma_tag)
+		dcons_dma_tag = NULL;
+
+	bus_dmamap_unload(sc->dma_tag, sc->dma_map);
+	bus_dmamap_destroy(sc->dma_tag, sc->dma_map);
+	bus_dma_tag_destroy(sc->dma_tag);
+
+	return 0;
+}
+
+static devclass_t dcons_crom_devclass;
+
+static device_method_t dcons_crom_methods[] = {
+	/* device interface */
+	DEVMETHOD(device_identify,	dcons_crom_identify),
+	DEVMETHOD(device_probe,		dcons_crom_probe),
+	DEVMETHOD(device_attach,	dcons_crom_attach),
+	DEVMETHOD(device_detach,	dcons_crom_detach),
+	{ 0, 0 }
+};
+
+static driver_t dcons_crom_driver = {
+	"dcons_crom",
+	dcons_crom_methods,
+	sizeof(struct dcons_crom_softc),
+};
+
+DRIVER_MODULE(dcons_crom, firewire, dcons_crom_driver,
+					dcons_crom_devclass, 0, 0);
+MODULE_VERSION(dcons_crom, 1);
+MODULE_DEPEND(dcons_crom, dcons,
+	DCONS_VERSION, DCONS_VERSION, DCONS_VERSION);
+MODULE_DEPEND(dcons_crom, firewire, 1, 1, 1);