usbdcore.h

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/*
 * (C) Copyright 2003
 * Gerry Hamel, [e-mail], Texas Instruments
 *
 * Based on linux/drivers/usbd/usbd.h
 *
 * Copyright (c) 2000, 2001, 2002 Lineo
 * Copyright (c) 2001 Hewlett Packard
 *
 * By:
 *	Stuart Lynne <[e-mail]>,
 *	Tom Rushworth <[e-mail]>,
 *	Bruce Balden <[e-mail]>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

#ifndef __USBDCORE_H__
#define __USBDCORE_H__

#include <common.h>
#include "usbdescriptors.h"


#define MAX_URBS_QUEUED 5


#if 1
#define usberr(fmt,args...) serial_printf("ERROR: %s(), %d: "fmt"\n",__FUNCTION__,__LINE__,##args)
#else
#define usberr(fmt,args...) do{}while(0)
#endif

#if 0
#define usbdbg(fmt,args...) serial_printf("debug: %s(), %d: "fmt"\n",__FUNCTION__,__LINE__,##args)
#else
#define usbdbg(fmt,args...) do{}while(0)
#endif

#if 0
#define usbinfo(fmt,args...) serial_printf("info: %s(), %d: "fmt"\n",__FUNCTION__,__LINE__,##args)
#else
#define usbinfo(fmt,args...) do{}while(0)
#endif

#ifndef le16_to_cpu
#define le16_to_cpu(x)	(x)
#endif

#ifndef inb
#define inb(p)	     (*(volatile u8*)(p))
#endif

#ifndef outb
#define outb(val,p)  (*(volatile u8*)(p) = (val))
#endif

#ifndef inw
#define inw(p)	     (*(volatile u16*)(p))
#endif

#ifndef outw
#define outw(val,p)  (*(volatile u16*)(p) = (val))
#endif

#ifndef inl
#define inl(p)	     (*(volatile u32*)(p))
#endif

#ifndef outl
#define outl(val,p)  (*(volatile u32*)(p) = (val))
#endif

#ifndef insw
#define insw(p,to,len)	   mmio_insw(p,to,len)
#endif

#ifndef outsw
#define outsw(p,from,len)  mmio_outsw(p,from,len)
#endif

#ifndef insb
#define insb(p,to,len)	   mmio_insb(p,to,len)
#endif

#ifndef mmio_insw
#define mmio_insw(r,b,l)	({	int __i ;  \
					u16 *__b2;  \
					__b2 = (u16 *) b;  \
					for (__i = 0; __i < l; __i++) {	 \
					  *(__b2 + __i) = inw(r);  \
					};  \
				})
#endif

#ifndef mmio_outsw
#define mmio_outsw(r,b,l)	({	int __i; \
					u16 *__b2; \
					__b2 = (u16 *) b; \
					for (__i = 0; __i < l; __i++) { \
					    outw( *(__b2 + __i), r); \
					} \
				})
#endif

#ifndef mmio_insb
#define mmio_insb(r,b,l)	({	int __i ;  \
					u8 *__b2;  \
					__b2 = (u8 *) b;  \
					for (__i = 0; __i < l; __i++) {	 \
					  *(__b2 + __i) = inb(r);  \
					};  \
				})
#endif

#ifndef MIN
#define MIN(a,b) ((a) < (b) ? (a) : (b))
#endif
#ifndef MAX
#define MAX(a,b) ((a) > (b) ? (a) : (b))
#endif


/*
 * Structure member address manipulation macros.
 * These are used by client code (code using the urb_link routines), since
 * the urb_link structure is embedded in the client data structures.
 *
 * Note: a macro offsetof equivalent to member_offset is defined in stddef.h
 *	 but this is kept here for the sake of portability.
 *
 * p2surround returns a pointer to the surrounding structure given
 * type of the surrounding structure, the name memb of the structure
 * member pointed at by ptr.  For example, if you have:
 *
 *	struct foo {
 *	    int x;
 *	    float y;
 *	    char z;
 *	} thingy;
 *
 *	char *cp = &thingy.z;
 *
 * then
 *
 *	&thingy == p2surround(struct foo, z, cp)
 *
 * Clear?
 */
#define _cv_(ptr)		  ((char*)(void*)(ptr))
#define member_offset(type,memb)  (_cv_(&(((type*)0)->memb))-(char*)0)
#define p2surround(type,memb,ptr) ((type*)(void*)(_cv_(ptr)-member_offset(type,memb)))

struct urb;

struct usb_endpoint_instance;
struct usb_interface_instance;
struct usb_configuration_instance;
struct usb_device_instance;
struct usb_bus_instance;

/*
 * Device and/or Interface Class codes
 */
#define USB_CLASS_PER_INTERFACE		0	/* for DeviceClass */
#define USB_CLASS_AUDIO			1
#define USB_CLASS_COMM			2
#define USB_CLASS_HID			3
#define USB_CLASS_PHYSICAL		5
#define USB_CLASS_PRINTER		7
#define USB_CLASS_MASS_STORAGE		8
#define USB_CLASS_HUB			9
#define USB_CLASS_DATA			10
#define USB_CLASS_APP_SPEC		0xfe
#define USB_CLASS_VENDOR_SPEC		0xff

/*
 * USB types
 */
#define USB_TYPE_STANDARD		(0x00 << 5)
#define USB_TYPE_CLASS			(0x01 << 5)
#define USB_TYPE_VENDOR			(0x02 << 5)
#define USB_TYPE_RESERVED		(0x03 << 5)

/*
 * USB recipients
 */
#define USB_RECIP_DEVICE		0x00
#define USB_RECIP_INTERFACE		0x01
#define USB_RECIP_ENDPOINT		0x02
#define USB_RECIP_OTHER			0x03

/*
 * USB directions
 */
#define USB_DIR_OUT			0
#define USB_DIR_IN			0x80

/*
 * Descriptor types
 */
#define USB_DT_DEVICE			0x01
#define USB_DT_CONFIG			0x02
#define USB_DT_STRING			0x03
#define USB_DT_INTERFACE		0x04
#define USB_DT_ENDPOINT			0x05

#define USB_DT_HID			(USB_TYPE_CLASS | 0x01)
#define USB_DT_REPORT			(USB_TYPE_CLASS | 0x02)
#define USB_DT_PHYSICAL			(USB_TYPE_CLASS | 0x03)
#define USB_DT_HUB			(USB_TYPE_CLASS | 0x09)

/*
 * Descriptor sizes per descriptor type
 */
#define USB_DT_DEVICE_SIZE		18
#define USB_DT_CONFIG_SIZE		9
#define USB_DT_INTERFACE_SIZE		9
#define USB_DT_ENDPOINT_SIZE		7
#define USB_DT_ENDPOINT_AUDIO_SIZE	9	/* Audio extension */
#define USB_DT_HUB_NONVAR_SIZE		7
#define USB_DT_HID_SIZE			9

/*
 * Endpoints
 */
#define USB_ENDPOINT_NUMBER_MASK	0x0f	/* in bEndpointAddress */
#define USB_ENDPOINT_DIR_MASK		0x80

#define USB_ENDPOINT_XFERTYPE_MASK	0x03	/* in bmAttributes */
#define USB_ENDPOINT_XFER_CONTROL	0
#define USB_ENDPOINT_XFER_ISOC		1
#define USB_ENDPOINT_XFER_BULK		2
#define USB_ENDPOINT_XFER_INT		3

/*
 * USB Packet IDs (PIDs)
 */
#define USB_PID_UNDEF_0			       0xf0
#define USB_PID_OUT			       0xe1
#define USB_PID_ACK			       0xd2
#define USB_PID_DATA0			       0xc3
#define USB_PID_PING			       0xb4	/* USB 2.0 */
#define USB_PID_SOF			       0xa5
#define USB_PID_NYET			       0x96	/* USB 2.0 */
#define USB_PID_DATA2			       0x87	/* USB 2.0 */
#define USB_PID_SPLIT			       0x78	/* USB 2.0 */
#define USB_PID_IN			       0x69
#define USB_PID_NAK			       0x5a
#define USB_PID_DATA1			       0x4b
#define USB_PID_PREAMBLE		       0x3c	/* Token mode */
#define USB_PID_ERR			       0x3c	/* USB 2.0: handshake mode */
#define USB_PID_SETUP			       0x2d
#define USB_PID_STALL			       0x1e
#define USB_PID_MDATA			       0x0f	/* USB 2.0 */

/*
 * Standard requests
 */
#define USB_REQ_GET_STATUS		0x00
#define USB_REQ_CLEAR_FEATURE		0x01
#define USB_REQ_SET_FEATURE		0x03
#define USB_REQ_SET_ADDRESS		0x05
#define USB_REQ_GET_DESCRIPTOR		0x06
#define USB_REQ_SET_DESCRIPTOR		0x07
#define USB_REQ_GET_CONFIGURATION	0x08
#define USB_REQ_SET_CONFIGURATION	0x09
#define USB_REQ_GET_INTERFACE		0x0A
#define USB_REQ_SET_INTERFACE		0x0B
#define USB_REQ_SYNCH_FRAME		0x0C

#define USBD_DEVICE_REQUESTS(x) (((unsigned int)x <= USB_REQ_SYNCH_FRAME) ? usbd_device_requests[x] : "UNKNOWN")

/*
 * HID requests
 */
#define USB_REQ_GET_REPORT		0x01
#define USB_REQ_GET_IDLE		0x02
#define USB_REQ_GET_PROTOCOL		0x03
#define USB_REQ_SET_REPORT		0x09
#define USB_REQ_SET_IDLE		0x0A
#define USB_REQ_SET_PROTOCOL		0x0B


/*
 * USB Spec Release number
 */

#define USB_BCD_VERSION			0x0110


/*
 * Device Requests	(c.f Table 9-2)
 */

#define USB_REQ_DIRECTION_MASK		0x80
#define USB_REQ_TYPE_MASK		0x60
#define USB_REQ_RECIPIENT_MASK		0x1f

#define USB_REQ_DEVICE2HOST		0x80
#define USB_REQ_HOST2DEVICE		0x00

#define USB_REQ_TYPE_STANDARD		0x00
#define USB_REQ_TYPE_CLASS		0x20
#define USB_REQ_TYPE_VENDOR		0x40

#define USB_REQ_RECIPIENT_DEVICE	0x00
#define USB_REQ_RECIPIENT_INTERFACE	0x01
#define USB_REQ_RECIPIENT_ENDPOINT	0x02
#define USB_REQ_RECIPIENT_OTHER		0x03

/*
 * get status bits
 */

#define USB_STATUS_SELFPOWERED		0x01
#define USB_STATUS_REMOTEWAKEUP		0x02

#define USB_STATUS_HALT			0x01

/*
 * descriptor types
 */