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usb: Add USB_RET_ADD_TO_QUEUE packet result code

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This can be used by usb-device code which wishes to process an entire endpoint
queue at once, to do this the usb-device code returns USB_RET_ADD_TO_QUEUE
from its handle_data class method and defines a flush_ep_queue class method
to call when the hcd is done queuing up packets.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Hans de Goede 2012-10-24 18:14:07 +02:00 • committed by Gerd Hoffmann
parent d0ff81b871
commit 36dfe324fd
8 changed files with 51 additions and 11 deletions
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21
hw/usb.h
View file

@ -38,12 +38,13 @@
#define USB_TOKEN_IN 0x69 /* device -> host */
#define USB_TOKEN_OUT 0xe1 /* host -> device */
#define USB_RET_NODEV (-1)
#define USB_RET_NAK (-2)
#define USB_RET_STALL (-3)
#define USB_RET_BABBLE (-4)
#define USB_RET_IOERROR (-5)
#define USB_RET_ASYNC (-6)
#define USB_RET_NODEV (-1)
#define USB_RET_NAK (-2)
#define USB_RET_STALL (-3)
#define USB_RET_BABBLE (-4)
#define USB_RET_IOERROR (-5)
#define USB_RET_ASYNC (-6)
#define USB_RET_ADD_TO_QUEUE (-7)
#define USB_SPEED_LOW 0
#define USB_SPEED_FULL 1
@ -293,6 +294,12 @@ typedef struct USBDeviceClass {
void (*set_interface)(USBDevice *dev, int interface,
int alt_old, int alt_new);
/*
* Called when the hcd is done queuing packets for an endpoint, only
* necessary for devices which can return USB_RET_ADD_TO_QUEUE.
*/
void (*flush_ep_queue)(USBDevice *dev, USBEndpoint *ep);
const char *product_desc;
const USBDesc *usb_desc;
} USBDeviceClass;
@ -507,6 +514,8 @@ int usb_device_handle_data(USBDevice *dev, USBPacket *p);
void usb_device_set_interface(USBDevice *dev, int interface,
int alt_old, int alt_new);
void usb_device_flush_ep_queue(USBDevice *dev, USBEndpoint *ep);
const char *usb_device_get_product_desc(USBDevice *dev);
const USBDesc *usb_device_get_usb_desc(USBDevice *dev);