369 lines
13 KiB
C
369 lines
13 KiB
C
/*
|
|
* (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>
|
|
|
|
/* 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 num_altsetting;
|
|
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_OHCI_NEW) || defined (CONFIG_USB_SL811HS) || \
|
|
defined(CONFIG_USB_ISP116X_HCD)
|
|
|
|
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);
|
|
void usb_event_poll(void);
|
|
|
|
/* Defines */
|
|
#define USB_UHCI_VEND_ID 0x8086
|
|
#define USB_UHCI_DEV_ID 0x7112
|
|
|
|
#else
|
|
#error USB Lowlevel not defined
|
|
#endif
|
|
|
|
#ifdef CONFIG_USB_STORAGE
|
|
|
|
#define USB_MAX_STOR_DEV 5
|
|
block_dev_desc_t *usb_stor_get_dev(int index);
|
|
int usb_stor_scan(int mode);
|
|
int usb_stor_info(void);
|
|
|
|
#endif
|
|
|
|
#ifdef CONFIG_USB_KEYBOARD
|
|
|
|
int drv_usb_kbd_init(void);
|
|
int usb_kbd_deregister(void);
|
|
|
|
#endif
|
|
/* 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_ = (unsigned short)x; \
|
|
(unsigned short)( \
|
|
((x_ & 0x00FFU) << 8) | ((x_ & 0xFF00U) >> 8) ); \
|
|
})
|
|
#define __swap_32(x) \
|
|
({ unsigned long x_ = (unsigned long)x; \
|
|
(unsigned long)( \
|
|
((x_ & 0x000000FFUL) << 24) | \
|
|
((x_ & 0x0000FF00UL) << 8) | \
|
|
((x_ & 0x00FF0000UL) >> 8) | \
|
|
((x_ & 0xFF000000UL) >> 24) ); \
|
|
})
|
|
|
|
#ifdef LITTLEENDIAN
|
|
# define swap_16(x) (x)
|
|
# define swap_32(x) (x)
|
|
#else
|
|
# define swap_16(x) __swap_16(x)
|
|
# define swap_32(x) __swap_32(x)
|
|
#endif /* LITTLEENDIAN */
|
|
|
|
/*
|
|
* 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_ */
|