first usable version of kernel and commands

After an year of hard work, this is a first "usable" version of Jehanne.

sys/include/usb/serial.h

@@ -0,0 +1,135 @@
+/*
+ * This file is part of the UCB release of Plan 9. It is subject to the license
+ * terms in the LICENSE file found in the top-level directory of this
+ * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
+ * part of the UCB release of Plan 9, including this file, may be copied,
+ * modified, propagated, or distributed except according to the terms contained
+ * in the LICENSE file.
+ */
+
+typedef struct Serial Serial;
+typedef struct Serialops Serialops;
+typedef struct Serialport Serialport;
+
+struct Serialops {
+	int	(*seteps)(Serialport*);
+	int	(*init)(Serialport*);
+	int	(*getparam)(Serialport*);
+	int	(*setparam)(Serialport*);
+	int	(*clearpipes)(Serialport*);
+	int	(*reset)(Serial*, Serialport*);
+	int	(*sendlines)(Serialport*);
+	int	(*modemctl)(Serialport*, int);
+	int	(*setbreak)(Serialport*, int);
+	int	(*readstatus)(Serialport*);
+	int	(*wait4data)(Serialport*, uint8_t *, int);
+	int	(*wait4write)(Serialport*, uint8_t *, int);
+};
+
+enum {
+	DataBufSz = 8*1024,
+	Maxifc = 16,
+};
+
+
+struct Serialport {
+	char name[32];
+	Serial	*s;		/* device we belong to */
+	int	isjtag;
+
+	Dev	*epintr;	/* may not exist */
+
+	Dev	*epin;
+	Dev	*epout;
+
+	Usbfs	fs;
+	uint8_t	ctlstate;
+
+	/* serial parameters */
+	uint32_t	baud;
+	int	stop;
+	int	mctl;
+	int	parity;
+	int	bits;
+	int	fifo;
+	int	limit;
+	int	rts;
+	int	cts;
+	int	dsr;
+	int	dcd;
+	int	dtr;
+	int	rlsd;
+
+	int64_t	timer;
+	int	blocked;	/* for sw flow ctl. BUG: not implemented yet */
+	int	nbreakerr;
+	int	ring;
+	int	nframeerr;
+	int	nparityerr;
+	int	novererr;
+	int	enabled;
+
+	int	interfc;	/* interfc on the device for ftdi */
+
+	Channel *w4data;
+	Channel *gotdata;
+	Channel *readc;		/* to uncouple reads, only used in ftdi... */
+	int	ndata;
+	uint8_t	data[DataBufSz];
+};
+
+struct Serial {
+	QLock;
+	Dev	*dev;		/* usb device*/
+
+	int	type;		/* serial model subtype */
+	int	recover;	/* # of non-fatal recovery tries */
+	Serialops;
+
+	int	hasepintr;
+
+	int	jtag;		/* index of jtag interface, -1 none */
+	int	nifcs;		/* # of serial interfaces, including JTAG */
+	Serialport p[Maxifc];
+	int	maxrtrans;
+	int	maxwtrans;
+
+	int	maxread;
+	int	maxwrite;
+
+	int	inhdrsz;
+	int	outhdrsz;
+	int	baudbase;	/* for special baud base settings, see ftdi */
+};
+
+enum {
+	/* soft flow control chars */
+	CTLS	= 023,
+	CTLQ	= 021,
+	CtlDTR	= 1,
+	CtlRTS	= 2,
+};
+
+/*
+ * !hget http://lxr.linux.no/source/drivers/usb/serial/pl2303.h|htmlfmt
+ * !hget http://lxr.linux.no/source/drivers/usb/serial/pl2303.c|htmlfmt
+ */
+
+int serialmain(Dev *d, int argc, char *argv[]);
+
+typedef struct Cinfo Cinfo;
+struct Cinfo {
+	int	vid;		/* usb vendor id */
+	int	did;		/* usb device/product id */
+	int	cid;		/* controller id assigned by us */
+};
+
+extern Cinfo plinfo[];
+extern Cinfo uconsinfo[];
+extern int serialdebug;
+
+#define	dsprint	if(serialdebug)fprint
+
+int	serialrecover(Serial *ser, Serialport *p, Dev *ep, char *err);
+int	serialreset(Serial *ser);
+char	*serdumpst(Serialport *p, char *buf, int bufsz);