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[usb] Add "usbscan" command for iterating over USB devices

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Implement a "usbscan" command as a direct analogy of the existing
"pciscan" command, allowing scripts to iterate over all detected USB
devices.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2024-10-17 14:05:25 +01:00
parent 2bf16c6ffc
commit c219b5d8a9
6 changed files with 225 additions and 2 deletions
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1
src/include/ipxe/errfile.h
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@@ -423,6 +423,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#define ERRFILE_editstring ( ERRFILE_OTHER | 0x00610000 )
#define ERRFILE_widget_ui ( ERRFILE_OTHER | 0x00620000 )
#define ERRFILE_form_ui ( ERRFILE_OTHER | 0x00630000 )
#define ERRFILE_usb_cmd ( ERRFILE_OTHER | 0x00640000 )
/** @} */

25
src/include/ipxe/usb.h
View File

@@ -54,6 +54,20 @@ enum usb_speed {
USB_SPEED_SUPER = USB_SPEED ( 5, 3 ),
};
/** Define a USB bus:device address
*
* @v bus Bus address
* @v dev Device address
* @ret busdev Bus:device address
*/
#define USB_BUSDEV( bus, dev ) ( ( (bus) << 8 ) | (dev) )
/** Extract USB bus address */
#define USB_BUS( busdev ) ( (busdev) >> 8 )
/** Extract USB device address */
#define USB_DEV( busdev ) ( (busdev) & 0xff )
/** USB packet IDs */
enum usb_pid {
/** IN PID */
@@ -956,6 +970,12 @@ struct usb_bus {
/** Host controller operations set */
struct usb_host_operations *op;
/** Bus address
*
* This is an internal index used only to allow a USB device
* to be identified via a nominal bus:device address.
*/
unsigned int address;
/** Largest transfer allowed on the bus */
size_t mtu;
/** Address in-use mask
@@ -1269,6 +1289,9 @@ extern struct usb_endpoint_companion_descriptor *
usb_endpoint_companion_descriptor ( struct usb_configuration_descriptor *config,
struct usb_endpoint_descriptor *desc );
extern struct usb_device * find_usb ( struct usb_bus *bus,
unsigned int address );
extern struct usb_hub * alloc_usb_hub ( struct usb_bus *bus,
struct usb_device *usb,
unsigned int ports,
@@ -1285,11 +1308,13 @@ extern struct usb_bus * alloc_usb_bus ( struct device *dev,
extern int register_usb_bus ( struct usb_bus *bus );
extern void unregister_usb_bus ( struct usb_bus *bus );
extern void free_usb_bus ( struct usb_bus *bus );
extern struct usb_bus * find_usb_bus ( unsigned int address );
extern struct usb_bus * find_usb_bus_by_location ( unsigned int bus_type,
unsigned int location );
extern int usb_alloc_address ( struct usb_bus *bus );
extern void usb_free_address ( struct usb_bus *bus, unsigned int address );
extern int usb_find_next ( struct usb_device **usb, uint16_t *busdev );
extern unsigned int usb_route_string ( struct usb_device *usb );
extern struct usb_port * usb_root_hub_port ( struct usb_device *usb );
extern struct usb_port * usb_transaction_translator ( struct usb_device *usb );