diff options
Diffstat (limited to 'hw/usb.h')
| -rw-r--r-- | hw/usb.h | 24 |
1 files changed, 14 insertions, 10 deletions
@@ -38,6 +38,7 @@ #define USB_TOKEN_IN 0x69 /* device -> host */ #define USB_TOKEN_OUT 0xe1 /* host -> device */ +#define USB_RET_SUCCESS (0) #define USB_RET_NODEV (-1) #define USB_RET_NAK (-2) #define USB_RET_STALL (-3) @@ -280,18 +281,20 @@ typedef struct USBDeviceClass { * Process control request. * Called from handle_packet(). * - * Returns length or one of the USB_RET_ codes. + * Status gets stored in p->status, and if p->status == USB_RET_SUCCESS + * then the number of bytes transfered is stored in p->actual_length */ - int (*handle_control)(USBDevice *dev, USBPacket *p, int request, int value, - int index, int length, uint8_t *data); + void (*handle_control)(USBDevice *dev, USBPacket *p, int request, int value, + int index, int length, uint8_t *data); /* * Process data transfers (both BULK and ISOC). * Called from handle_packet(). * - * Returns length or one of the USB_RET_ codes. + * Status gets stored in p->status, and if p->status == USB_RET_SUCCESS + * then the number of bytes transfered is stored in p->actual_length */ - int (*handle_data)(USBDevice *dev, USBPacket *p); + void (*handle_data)(USBDevice *dev, USBPacket *p); void (*set_interface)(USBDevice *dev, int interface, int alt_old, int alt_new); @@ -354,7 +357,8 @@ struct USBPacket { uint64_t parameter; /* control transfers */ bool short_not_ok; bool int_req; - int result; /* transfer length or USB_RET_* status code */ + int status; /* USB_RET_* status code */ + int actual_length; /* Number of bytes actually transfered */ /* Internal use by the USB layer. */ USBPacketState state; USBCombinedPacket *combined; @@ -388,7 +392,7 @@ static inline bool usb_packet_is_inflight(USBPacket *p) USBDevice *usb_find_device(USBPort *port, uint8_t addr); -int usb_handle_packet(USBDevice *dev, USBPacket *p); +void usb_handle_packet(USBDevice *dev, USBPacket *p); void usb_packet_complete(USBDevice *dev, USBPacket *p); void usb_packet_complete_one(USBDevice *dev, USBPacket *p); void usb_cancel_packet(USBPacket * p); @@ -523,10 +527,10 @@ void usb_device_handle_attach(USBDevice *dev); void usb_device_handle_reset(USBDevice *dev); -int usb_device_handle_control(USBDevice *dev, USBPacket *p, int request, int value, - int index, int length, uint8_t *data); +void usb_device_handle_control(USBDevice *dev, USBPacket *p, int request, + int val, int index, int length, uint8_t *data); -int usb_device_handle_data(USBDevice *dev, USBPacket *p); +void usb_device_handle_data(USBDevice *dev, USBPacket *p); void usb_device_set_interface(USBDevice *dev, int interface, int alt_old, int alt_new); |