diff options
Diffstat (limited to 'include/linux/usb')
| -rw-r--r-- | include/linux/usb/ch9.h | 22 | ||||
| -rw-r--r-- | include/linux/usb/iowarrior.h | 33 | ||||
| -rw-r--r-- | include/linux/usb/quirks.h | 11 |
3 files changed, 62 insertions, 4 deletions
diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h index 245c7253122..1122a6c2c1a 100644 --- a/include/linux/usb/ch9.h +++ b/include/linux/usb/ch9.h @@ -1,8 +1,9 @@ /* - * This file holds USB constants and structures that are needed for USB - * device APIs. These are used by the USB device model, which is defined - * in chapter 9 of the USB 2.0 specification. Linux has several APIs in C - * that need these: + * This file holds USB constants and structures that are needed for + * USB device APIs. These are used by the USB device model, which is + * defined in chapter 9 of the USB 2.0 specification and in the + * Wireless USB 1.0 (spread around). Linux has several APIs in C that + * need these: * * - the master/host side Linux-USB kernel driver API; * - the "usbfs" user space API; and @@ -14,6 +15,19 @@ * * There's also "Wireless USB", using low power short range radios for * peripheral interconnection but otherwise building on the USB framework. + * + * Note all descriptors are declared '__attribute__((packed))' so that: + * + * [a] they never get padded, either internally (USB spec writers + * probably handled that) or externally; + * + * [b] so that accessing bigger-than-a-bytes fields will never + * generate bus errors on any platform, even when the location of + * its descriptor inside a bundle isn't "naturally aligned", and + * + * [c] for consistency, removing all doubt even when it appears to + * someone that the two other points are non-issues for that + * particular descriptor type. */ #ifndef __LINUX_USB_CH9_H diff --git a/include/linux/usb/iowarrior.h b/include/linux/usb/iowarrior.h new file mode 100644 index 00000000000..cbbe020a4f5 --- /dev/null +++ b/include/linux/usb/iowarrior.h @@ -0,0 +1,33 @@ +#ifndef _IOWARRIOR_H_ +#define _IOWARRIOR_H_ + +#define CODEMERCS_MAGIC_NUMBER 0xC0 /* like COde Mercenaries */ + +/* Define the ioctl commands for reading and writing data */ +#define IOW_WRITE _IOW(CODEMERCS_MAGIC_NUMBER, 1, __u8 *) +#define IOW_READ _IOW(CODEMERCS_MAGIC_NUMBER, 2, __u8 *) + +/* + A struct for available device info which is read + with the ioctl IOW_GETINFO. + To be compatible with 2.4 userspace which didn't have an easy way to get + this information. +*/ +struct iowarrior_info { + __u32 vendor; /* vendor id : supposed to be USB_VENDOR_ID_CODEMERCS in all cases */ + __u32 product; /* product id : depends on type of chip (USB_DEVICE_ID_CODEMERCS_XXXXX) */ + __u8 serial[9]; /* the serial number of our chip (if a serial-number is not available this is empty string) */ + __u32 revision; /* revision number of the chip */ + __u32 speed; /* USB-speed of the device (0=UNKNOWN, 1=LOW, 2=FULL 3=HIGH) */ + __u32 power; /* power consumption of the device in mA */ + __u32 if_num; /* the number of the endpoint */ + __u32 report_size; /* size of the data-packets on this interface */ +}; + +/* + Get some device-information (product-id , serial-number etc.) + in order to identify a chip. +*/ +#define IOW_GETINFO _IOR(CODEMERCS_MAGIC_NUMBER, 3, struct iowarrior_info) + +#endif /* _IOWARRIOR_H_ */ diff --git a/include/linux/usb/quirks.h b/include/linux/usb/quirks.h new file mode 100644 index 00000000000..6bac8faacbc --- /dev/null +++ b/include/linux/usb/quirks.h @@ -0,0 +1,11 @@ +/* + * This file holds the definitions of quirks found in USB devices. + * Only quirks that affect the whole device, not an interface, + * belong here. + */ + +/* device must not be autosuspended */ +#define USB_QUIRK_NO_AUTOSUSPEND 0x00000001 + +/* string descriptors must not be fetched using a 255-byte read */ +#define USB_QUIRK_STRING_FETCH_255 0x00000002 |