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[acm] Add support for CDC-ACM (aka USB RNDIS) devices

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Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2015-12-01 14:46:48 +00:00
parent 53ba5936b5
commit 296dee6d38
4 changed files with 648 additions and 0 deletions
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49
src/include/ipxe/cdc.h
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@@ -14,6 +14,16 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
/** Class code for communications devices */
#define USB_CLASS_CDC 2
/** Send encapsulated command */
#define CDC_SEND_ENCAPSULATED_COMMAND \
( USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE | \
USB_REQUEST_TYPE ( 0x00 ) )
/** Get encapsulated response */
#define CDC_GET_ENCAPSULATED_RESPONSE \
( USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE | \
USB_REQUEST_TYPE ( 0x01 ) )
/** Union functional descriptor */
struct cdc_union_descriptor {
/** Descriptor header */
@@ -30,6 +40,11 @@ struct cdc_union_descriptor {
/** Ethernet descriptor subtype */
#define CDC_SUBTYPE_ETHERNET 15
/** Response available */
#define CDC_RESPONSE_AVAILABLE \
( USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE | \
USB_REQUEST_TYPE ( 0x01 ) )
/** Network connection notification */
#define CDC_NETWORK_CONNECTION \
( USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE | \
@@ -52,4 +67,38 @@ extern struct cdc_union_descriptor *
cdc_union_descriptor ( struct usb_configuration_descriptor *config,
struct usb_interface_descriptor *interface );
/**
* Send encapsulated command
*
* @v usb USB device
* @v interface Interface number
* @v data Command
* @v len Length of command
* @ret rc Return status code
*/
static inline __attribute__ (( always_inline )) int
cdc_send_encapsulated_command ( struct usb_device *usb, unsigned int interface,
void *data, size_t len ) {
return usb_control ( usb, CDC_SEND_ENCAPSULATED_COMMAND, 0, interface,
data, len );
}
/**
* Get encapsulated response
*
* @v usb USB device
* @v interface Interface number
* @v data Response buffer
* @v len Length of response buffer
* @ret rc Return status code
*/
static inline __attribute__ (( always_inline )) int
cdc_get_encapsulated_response ( struct usb_device *usb, unsigned int interface,
void *data, size_t len ) {
return usb_control ( usb, CDC_GET_ENCAPSULATED_RESPONSE, 0, interface,
data, len );
}
#endif /* _IPXE_CDC_H */

1
src/include/ipxe/errfile.h
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@@ -184,6 +184,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#define ERRFILE_intelvf ( ERRFILE_DRIVER | 0x00780000 )
#define ERRFILE_intelxvf ( ERRFILE_DRIVER | 0x00790000 )
#define ERRFILE_smsc95xx ( ERRFILE_DRIVER | 0x007a0000 )
#define ERRFILE_acm ( ERRFILE_DRIVER | 0x007b0000 )
#define ERRFILE_aoe ( ERRFILE_NET | 0x00000000 )
#define ERRFILE_arp ( ERRFILE_NET | 0x00010000 )