1 files changed, 160 insertions, 0 deletions
diff --git a/os/pc/usb.h b/os/pc/usb.h
new file mode 100644
index 00000000..32da4d51
--- /dev/null
+++ b/os/pc/usb.h
@@ -0,0 +1,160 @@
+typedef struct Ctlr Ctlr;
+typedef struct Endpt Endpt;
+typedef struct Udev Udev;
+typedef struct Usbhost Usbhost;
+
+enum
+{
+	MaxUsb = 10,		/* max number of USB Host Controller Interfaces (Usbhost*) */
+	MaxUsbDev = 32,	/* max number of attached USB devices, including root hub (Udev*) */
+
+	/*
+	 * USB packet definitions...
+ 	*/
+	TokIN = 0x69,
+	TokOUT = 0xE1,
+	TokSETUP = 0x2D,
+
+	/* request type */
+	RH2D = 0<<7,
+	RD2H = 1<<7,
+	Rstandard = 0<<5,
+	Rclass = 1<<5,
+	Rvendor = 2<<5,
+	Rdevice = 0,
+	Rinterface = 1,
+	Rendpt = 2,
+	Rother = 3,
+};
+
+#define Class(csp)		((csp)&0xff)
+#define Subclass(csp)	(((csp)>>8)&0xff)
+#define Proto(csp)		(((csp)>>16)&0xff)
+#define CSP(c, s, p)	((c) | ((s)<<8) | ((p)<<16))
+
+/*
+ * device endpoint
+ */
+struct Endpt
+{
+	Ref;
+	Lock;
+	int		x;		/* index in Udev.ep */
+	int		id;		/* hardware endpoint address */
+	int		maxpkt;	/* maximum packet size (from endpoint descriptor) */
+	int		data01;	/* 0=DATA0, 1=DATA1 */
+	uchar	eof;
+	ulong	csp;
+	uchar	mode;	/* OREAD, OWRITE, ORDWR */
+	uchar	nbuf;	/* number of buffers allowed */
+	uchar	iso;
+	uchar	debug;
+	uchar	active;	/* listed for examination by interrupts */
+	int		setin;
+	/* ISO related: */
+	int		hz;
+	int		remain;	/* for packet size calculations */
+	int		samplesz;
+	int		sched;	/* schedule index; -1 if undefined or aperiodic */
+	int		pollms;	/* polling interval in msec */
+	int		psize;	/* (remaining) size of this packet */
+	int		off;		/* offset into packet */
+	/* Real-time iso stuff */
+	ulong	foffset;	/* file offset (to detect seeks) */
+	ulong	poffset;	/* offset of next packet to be queued */
+	ulong	toffset;	/* offset associated with time */
+	vlong	time;		/* timeassociated with offset */
+	int		buffered;	/* bytes captured but unread, or written but unsent */
+	/* end ISO stuff */
+
+	Udev*	dev;	/* owning device */
+
+	ulong	nbytes;
+	ulong	nblocks;
+
+	void	*private;
+
+	// all the rest could (should?) move to the driver private structure; except perhaps err
+	QLock	rlock;
+	Rendez	rr;
+	Queue*	rq;
+	QLock	wlock;
+	Rendez	wr;
+	Queue*	wq;
+
+	int		ntd;
+	char*	err;		// needs to be global for unstall; fix?
+
+	Endpt*	activef;	/* active endpoint list */
+};
+
+/* device parameters */
+enum
+{
+	/* Udev.state */
+	Disabled = 0,
+	Attached,
+	Enabled,
+	Assigned,
+	Configured,
+
+	/* Udev.class */
+	Noclass = 0,
+	Hubclass = 9,
+};
+
+/*
+ * active USB device
+ */
+struct Udev
+{
+	Ref;
+	Lock;
+	Usbhost	*uh;
+	int		x;		/* index in usbdev[] */
+	int		busy;
+	int		state;
+	int		id;
+	uchar	port;		/* port number on connecting hub */
+	ulong	csp;
+	ushort	vid;		/* vendor id */
+	ushort	did;		/* product id */
+	int		ls;
+	int		npt;
+	Endpt*	ep[16];	/* active end points */
+	Udev*	ports;	/* active ports, if hub */
+	Udev*	next;		/* next device on this hub */
+};
+
+/*
+ * One of these per active Host Controller Interface (HCI)
+ */
+struct Usbhost
+{
+	ISAConf;					/* hardware info */
+	int	tbdf;					/* type+busno+devno+funcno */
+
+	QLock;					/* protects namespace state */
+	int		idgen;			/* version number to distinguish new connections */
+	Udev*	dev[MaxUsbDev];	/* device endpoints managed by this HCI */
+
+	void	(*init)(Usbhost*);
+	void	(*interrupt)(Ureg*, void*);
+
+	void	(*portinfo)(Usbhost*, char*, char*);
+	void	(*portreset)(Usbhost*, int);
+	void	(*portenable)(Usbhost*, int, int);
+
+	void	(*epalloc)(Usbhost*, Endpt*);
+	void	(*epfree)(Usbhost*, Endpt*);
+	void	(*epopen)(Usbhost*, Endpt*);
+	void	(*epclose)(Usbhost*, Endpt*);
+	void	(*epmode)(Usbhost*, Endpt*);
+
+	long	(*read)(Usbhost*, Endpt*, void*, long, vlong);
+	long	(*write)(Usbhost*, Endpt*, void*, long, vlong, int);
+
+	void	*ctlr;
+};
+
+extern void addusbtype(char*, int(*)(Usbhost*));