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usb: add USBEndpoint

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Start maintaining endpoint state at USBDevice level.  Add USBEndpoint
struct and some helper functions to deal with it.  For now it contains
the endpoint type only.  Moved over some bits from usb-linux.c

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2011-08-29 12:49:46 +02:00
parent 62c6ae04cf
commit d8e17efdec
4 changed files with 74 additions and 34 deletions
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30
hw/usb.c
View file

@ -414,3 +414,33 @@ void usb_packet_cleanup(USBPacket *p)
{
qemu_iovec_destroy(&p->iov);
}
void usb_ep_init(USBDevice *dev)
{
int ep;
for (ep = 0; ep < USB_MAX_ENDPOINTS; ep++) {
dev->ep_in[ep].type = USB_ENDPOINT_XFER_INVALID;
dev->ep_out[ep].type = USB_ENDPOINT_XFER_INVALID;
}
}
struct USBEndpoint *usb_ep_get(USBDevice *dev, int pid, int ep)
{
struct USBEndpoint *eps = pid == USB_TOKEN_IN ? dev->ep_in : dev->ep_out;
assert(pid == USB_TOKEN_IN || pid == USB_TOKEN_OUT);
assert(ep > 0 && ep <= USB_MAX_ENDPOINTS);
return eps + ep - 1;
}
uint8_t usb_ep_get_type(USBDevice *dev, int pid, int ep)
{
struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);
return uep->type;
}
void usb_ep_set_type(USBDevice *dev, int pid, int ep, uint8_t type)
{
struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);
uep->type = type;
}