📄 usb.h
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/*
* (C) Copyright 2001
* Denis Peter, MPL AG Switzerland
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
* Note: Part of this code has been derived from linux
*
*/
#ifndef _USB_H_
#define _USB_H_
#include "usb_defs.h"
#ifndef size_t
#define size_t unsigned int
#endif
#ifndef NULL
#define NULL 0
#endif
struct cmd_tbl_s
{
char *name; /* Command Name */
int maxargs; /* maximum number of arguments */
int repeatable; /* autorepeat allowed? */
/* Implementation function */
int (*cmd)(struct cmd_tbl_s *, int, int, char *[]);
char *usage; /* Usage message (short) */
char *help; /* Help message (long) */
/* do auto completion on the arguments */
int (*complete)(int argc, char *argv[], char last_char, int maxv, char *cmdv[]);
};
typedef struct cmd_tbl_s cmd_tbl_t;
/* Interface types: */
#define IF_TYPE_UNKNOWN 0
#define IF_TYPE_IDE 1
#define IF_TYPE_SCSI 2
#define IF_TYPE_ATAPI 3
#define IF_TYPE_USB 4
#define IF_TYPE_DOC 5
#define IF_TYPE_MMC 6
/* Part types */
#define PART_TYPE_UNKNOWN 0x00
#define PART_TYPE_MAC 0x01
#define PART_TYPE_DOS 0x02
#define PART_TYPE_ISO 0x03
#define PART_TYPE_AMIGA 0x04
/* device types */
#define DEV_TYPE_UNKNOWN 0xff /* not connected */
#define DEV_TYPE_HARDDISK 0x00 /* harddisk */
#define DEV_TYPE_TAPE 0x01 /* Tape */
#define DEV_TYPE_CDROM 0x05 /* CD-ROM */
#define DEV_TYPE_OPDISK 0x07 /* optical disk */
/* Everything is aribtrary */
#define USB_ALTSETTINGALLOC 4
#define USB_MAXALTSETTING 128 /* Hard limit */
#define USB_MAX_DEVICE 32
#define USB_MAXCONFIG 8
#define USB_MAXINTERFACES 8
#define USB_MAXENDPOINTS 16
#define USB_MAXCHILDREN 8 /* This is arbitrary */
#define USB_MAX_HUB 16
#define USB_CNTL_TIMEOUT 100 /* 100ms timeout */
/* String descriptor */
struct usb_string_descriptor
{
unsigned char bLength;
unsigned char bDescriptorType;
unsigned short wData[1];
};
//__attribute__ ((packed));
/* device request (setup) */
struct devrequest
{
unsigned char requesttype;
unsigned char request;
unsigned short value;
unsigned short index;
unsigned short length;
};
//__attribute__ ((packed));
/* All standard descriptors have these 2 fields in common */
struct usb_descriptor_header
{
unsigned char bLength;
unsigned char bDescriptorType;
};
//__attribute__ ((packed));
/* Device descriptor */
struct usb_device_descriptor
{
unsigned char bLength;
unsigned char bDescriptorType;
unsigned short bcdUSB;
unsigned char bDeviceClass;
unsigned char bDeviceSubClass;
unsigned char bDeviceProtocol;
unsigned char bMaxPacketSize0;
unsigned short idVendor;
unsigned short idProduct;
unsigned short bcdDevice;
unsigned char iManufacturer;
unsigned char iProduct;
unsigned char iSerialNumber;
unsigned char bNumConfigurations;
};
//__attribute__ ((packed));
/* Endpoint descriptor */
struct usb_endpoint_descriptor
{
unsigned char bLength;
unsigned char bDescriptorType;
unsigned char bEndpointAddress;
unsigned char bmAttributes;
unsigned short wMaxPacketSize;
unsigned char bInterval;
unsigned char bRefresh;
unsigned char bSynchAddress;
};
//__attribute__ ((packed));
/* Interface descriptor */
struct usb_interface_descriptor
{
unsigned char bLength;
unsigned char bDescriptorType;
unsigned char bInterfaceNumber;
unsigned char bAlternateSetting;
unsigned char bNumEndpoints;
unsigned char bInterfaceClass;
unsigned char bInterfaceSubClass;
unsigned char bInterfaceProtocol;
unsigned char iInterface;
unsigned char no_of_ep;
unsigned char act_altsetting;
struct usb_endpoint_descriptor ep_desc[USB_MAXENDPOINTS];
};
//__attribute__ ((packed));
/* Configuration descriptor information.. */
struct usb_config_descriptor
{
unsigned char bLength;
unsigned char bDescriptorType;
unsigned short wTotalLength;
unsigned char bNumInterfaces;
unsigned char bConfigurationValue;
unsigned char iConfiguration;
unsigned char bmAttributes;
unsigned char MaxPower;
unsigned char no_of_if; /* number of interfaces */
struct usb_interface_descriptor if_desc[USB_MAXINTERFACES];
};
//__attribute__ ((packed));
struct usb_device
{
int devnum; /* Device number on USB bus */
int slow; /* Slow device? */
char mf[32]; /* manufacturer */
char prod[32]; /* product */
char serial[32]; /* serial number */
int maxpacketsize; /* Maximum packet size; encoded as 0,1,2,3 = 8,16,32,64 */
unsigned int toggle[2]; /* one bit for each endpoint ([0] = IN, [1] = OUT) */
unsigned int halted[2]; /* endpoint halts; one bit per endpoint # & direction; */
/* [0] = IN, [1] = OUT */
int epmaxpacketin[16]; /* INput endpoint specific maximums */
int epmaxpacketout[16]; /* OUTput endpoint specific maximums */
int configno; /* selected config number */
struct usb_device_descriptor descriptor; /* Device Descriptor */
struct usb_config_descriptor config; /* config descriptor */
int have_langid; /* whether string_langid is valid yet */
int string_langid; /* language ID for strings */
int (*irq_handle)(struct usb_device *dev);
unsigned long irq_status;
int irq_act_len; /* transfered bytes */
void *privptr;
/*
* Child devices - if this is a hub device
* Each instance needs its own set of data structures.
*/
unsigned long status;
int act_len; /* transfered bytes */
int maxchild; /* Number of ports if hub */
struct usb_device *parent;
struct usb_device *children[USB_MAXCHILDREN];
};
/**********************************************************************
* this is how the lowlevel part communicate with the outer world
*/
//#if defined(CONFIG_USB_UHCI) || defined(CONFIG_USB_OHCI) || defined (CONFIG_USB_SL811HS)
int usb_lowlevel_init(void);
int usb_lowlevel_stop(void);
int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,int transfer_len);
int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
int transfer_len,struct devrequest *setup);
int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
int transfer_len, int interval);
/* Defines */
#define USB_UHCI_VEND_ID 0x8086
#define USB_UHCI_DEV_ID 0x7112
//#else
//#error USB Lowlevel not defined
//#endif
#define USB_MAX_STOR_DEV 5
typedef struct block_dev_desc
{
int if_type; /* type of the interface */
int dev; /* device number */
unsigned char part_type; /* partition type */
unsigned char target; /* target SCSI ID */
unsigned char lun; /* target LUN */
unsigned char type; /* device type */
unsigned char removable; /* removable device */
unsigned long lba; /* number of blocks */
unsigned long blksz; /* block size */
unsigned char vendor [40+1]; /* IDE model, SCSI Vendor */
unsigned char product[20+1]; /* IDE Serial no, SCSI product */
unsigned char revision[8+1]; /* firmware revision */
unsigned long (*block_read)(int dev,
unsigned long start,
unsigned long blkcnt,
unsigned long *buffer);
}
block_dev_desc_t;
block_dev_desc_t *usb_stor_get_dev(int index);
int usb_stor_scan(int mode);
void usb_stor_info(void);
/* routines */
int usb_init(void); /* initialize the USB Controller */
int usb_stop(void); /* stop the USB Controller */
int usb_set_protocol(struct usb_device *dev, int ifnum, int protocol);
int usb_set_idle(struct usb_device *dev, int ifnum, int duration, int report_id);
struct usb_device * usb_get_dev_index(int index);
int usb_control_msg(struct usb_device *dev, unsigned int pipe,
unsigned char request, unsigned char requesttype,
unsigned short value, unsigned short index,
void *data, unsigned short size, int timeout);
int usb_bulk_msg(struct usb_device *dev, unsigned int pipe,
void *data, int len, int *actual_length, int timeout);
int usb_submit_int_msg(struct usb_device *dev, unsigned long pipe,
void *buffer,int transfer_len, int interval);
void usb_disable_asynch(int disable);
int usb_maxpacket(struct usb_device *dev,unsigned long pipe);
void __inline wait_ms(unsigned long ms);
int usb_get_configuration_no(struct usb_device *dev,unsigned char *buffer,int cfgno);
int usb_get_report(struct usb_device *dev, int ifnum, unsigned char type, unsigned char id, void *buf, int size);
int usb_get_class_descriptor(struct usb_device *dev, int ifnum,
unsigned char type, unsigned char id, void *buf, int size);
int usb_clear_halt(struct usb_device *dev, int pipe);
int usb_string(struct usb_device *dev, int index, char *buf, size_t size);
int usb_set_interface(struct usb_device *dev, int interface, int alternate);
/* big endian -> little endian conversion */
/* some CPUs are already little endian e.g. the ARM920T */
#define swap_16(x) ((unsigned short)(x))
#define swap_32(x) ((unsigned long)(x))
/*
* Calling this entity a "pipe" is glorifying it. A USB pipe
* is something embarrassingly simple: it basically consists
* of the following information:
* - device number (7 bits)
* - endpoint number (4 bits)
* - current Data0/1 state (1 bit)
* - direction (1 bit)
* - speed (1 bit)
* - max packet size (2 bits: 8, 16, 32 or 64)
* - pipe type (2 bits: control, interrupt, bulk, isochronous)
*
* That's 18 bits. Really. Nothing more. And the USB people have
* documented these eighteen bits as some kind of glorious
* virtual data structure.
*
* Let's not fall in that trap. We'll just encode it as a simple
* unsigned int. The encoding is:
*
* - max size: bits 0-1 (00 = 8, 01 = 16, 10 = 32, 11 = 64)
* - direction: bit 7 (0 = Host-to-Device [Out], 1 = Device-to-Host [In])
* - device: bits 8-14
* - endpoint: bits 15-18
* - Data0/1: bit 19
* - speed: bit 26 (0 = Full, 1 = Low Speed)
* - pipe type: bits 30-31 (00 = isochronous, 01 = interrupt, 10 = control, 11 = bulk)
*
* Why? Because it's arbitrary, and whatever encoding we select is really
* up to us. This one happens to share a lot of bit positions with the UHCI
* specification, so that much of the uhci driver can just mask the bits
* appropriately.
*/
/* Create various pipes... */
#define create_pipe(dev,endpoint) \
(((dev)->devnum << 8) | (endpoint << 15) | ((dev)->slow << 26) | (dev)->maxpacketsize)
#define default_pipe(dev) ((dev)->slow <<26)
#define usb_sndctrlpipe(dev,endpoint) ((PIPE_CONTROL << 30) | create_pipe(dev,endpoint))
#define usb_rcvctrlpipe(dev,endpoint) ((PIPE_CONTROL << 30) | create_pipe(dev,endpoint) | USB_DIR_IN)
#define usb_sndisocpipe(dev,endpoint) ((PIPE_ISOCHRONOUS << 30) | create_pipe(dev,endpoint))
#define usb_rcvisocpipe(dev,endpoint) ((PIPE_ISOCHRONOUS << 30) | create_pipe(dev,endpoint) | USB_DIR_IN)
#define usb_sndbulkpipe(dev,endpoint) ((PIPE_BULK << 30) | create_pipe(dev,endpoint))
#define usb_rcvbulkpipe(dev,endpoint) ((PIPE_BULK << 30) | create_pipe(dev,endpoint) | USB_DIR_IN)
#define usb_sndintpipe(dev,endpoint) ((PIPE_INTERRUPT << 30) | create_pipe(dev,endpoint))
#define usb_rcvintpipe(dev,endpoint) ((PIPE_INTERRUPT << 30) | create_pipe(dev,endpoint) | USB_DIR_IN)
#define usb_snddefctrl(dev) ((PIPE_CONTROL << 30) | default_pipe(dev))
#define usb_rcvdefctrl(dev) ((PIPE_CONTROL << 30) | default_pipe(dev) | USB_DIR_IN)
/* The D0/D1 toggle bits */
#define usb_gettoggle(dev, ep, out) (((dev)->toggle[out] >> ep) & 1)
#define usb_dotoggle(dev, ep, out) ((dev)->toggle[out] ^= (1 << ep))
#define usb_settoggle(dev, ep, out, bit) ((dev)->toggle[out] = ((dev)->toggle[out] & ~(1 << ep)) | ((bit) << ep))
/* Endpoint halt control/status */
#define usb_endpoint_out(ep_dir) (((ep_dir >> 7) & 1) ^ 1)
#define usb_endpoint_halt(dev, ep, out) ((dev)->halted[out] |= (1 << (ep)))
#define usb_endpoint_running(dev, ep, out) ((dev)->halted[out] &= ~(1 << (ep)))
#define usb_endpoint_halted(dev, ep, out) ((dev)->halted[out] & (1 << (ep)))
#define usb_packetid(pipe) (((pipe) & USB_DIR_IN) ? USB_PID_IN : USB_PID_OUT)
#define usb_pipeout(pipe) ((((pipe) >> 7) & 1) ^ 1)
#define usb_pipein(pipe) (((pipe) >> 7) & 1)
#define usb_pipedevice(pipe) (((pipe) >> 8) & 0x7f)
#define usb_pipe_endpdev(pipe) (((pipe) >> 8) & 0x7ff)
#define usb_pipeendpoint(pipe) (((pipe) >> 15) & 0xf)
#define usb_pipedata(pipe) (((pipe) >> 19) & 1)
#define usb_pipeslow(pipe) (((pipe) >> 26) & 1)
#define usb_pipetype(pipe) (((pipe) >> 30) & 3)
#define usb_pipeisoc(pipe) (usb_pipetype((pipe)) == PIPE_ISOCHRONOUS)
#define usb_pipeint(pipe) (usb_pipetype((pipe)) == PIPE_INTERRUPT)
#define usb_pipecontrol(pipe) (usb_pipetype((pipe)) == PIPE_CONTROL)
#define usb_pipebulk(pipe) (usb_pipetype((pipe)) == PIPE_BULK)
/*************************************************************************
* Hub Stuff
*/
struct usb_port_status
{
unsigned short wPortStatus;
unsigned short wPortChange;
};
//__attribute__ ((packed));
struct usb_hub_status
{
unsigned short wHubStatus;
unsigned short wHubChange;
};
//__attribute__ ((packed));
/* Hub descriptor */
struct usb_hub_descriptor
{
unsigned char bLength;
unsigned char bDescriptorType;
unsigned char bNbrPorts;
unsigned short wHubCharacteristics;
unsigned char bPwrOn2PwrGood;
unsigned char bHubContrCurrent;
unsigned char DeviceRemovable[(USB_MAXCHILDREN+1+7)/8];
unsigned char PortPowerCtrlMask[(USB_MAXCHILDREN+1+7)/8];
/* DeviceRemovable and PortPwrCtrlMask want to be variable-length
bitmaps that hold max 255 entries. (bit0 is ignored) */
};
//__attribute__ ((packed));
struct usb_hub_device
{
struct usb_device *pusb_dev;
struct usb_hub_descriptor desc;
};
#endif /*_USB_H_ */
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