motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-03 15:53:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

usb: maintain async packet list per endpoint

Browse source 
Maintain a list of async packets per endpoint.  With the current code
the list will never receive more than a single item.  I think you can
guess what the future plan is though ;)

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2012-01-12 14:26:13 +01:00
parent 079d0b7f1e
commit db4be873d3
2 changed files with 108 additions and 28 deletions
Download patch file Download diff file Expand all files Collapse all files

9
hw/usb.h
View file

@ -177,6 +177,7 @@ struct USBEndpoint {
uint8_t ifnum;
int max_packet_size;
USBDevice *dev;
QTAILQ_HEAD(, USBPacket) queue;
};
/* definition of a USB device */
@ -309,15 +310,16 @@ struct USBPort {
typedef void USBCallback(USBPacket * packet, void *opaque);
/* Structure used to hold information about an active USB packet. */
typedef enum USBPacketState {
USB_PACKET_UNDEFINED = 0,
USB_PACKET_SETUP,
USB_PACKET_QUEUED,
USB_PACKET_ASYNC,
USB_PACKET_COMPLETE,
USB_PACKET_CANCELED,
} USBPacketState;
/* Structure used to hold information about an active USB packet. */
struct USBPacket {
/* Data fields for use by the driver. */
int pid;
@ -326,9 +328,11 @@ struct USBPacket {
int result; /* transfer length or USB_RET_* status code */
/* Internal use by the USB layer. */
USBPacketState state;
QTAILQ_ENTRY(USBPacket) queue;
};
void usb_packet_init(USBPacket *p);
void usb_packet_set_state(USBPacket *p, USBPacketState state);
void usb_packet_setup(USBPacket *p, int pid, USBEndpoint *ep);
void usb_packet_addbuf(USBPacket *p, void *ptr, size_t len);
int usb_packet_map(USBPacket *p, QEMUSGList *sgl);
@ -339,7 +343,8 @@ void usb_packet_cleanup(USBPacket *p);
static inline bool usb_packet_is_inflight(USBPacket *p)
{
return p->state == USB_PACKET_ASYNC;
return (p->state == USB_PACKET_QUEUED ||
p->state == USB_PACKET_ASYNC);
}
USBDevice *usb_find_device(USBPort *port, uint8_t addr);