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usb: fold usb_generic_handle_packet into usb_handle_packet 

There is no reason to have a separate usb_generic_handle_packet function
any more, fold it into usb_handle_packet().  Also call the do_token_*
functions which handle control transfer emulation for control pipe
packets only.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2012-01-11 12:14:02 +01:00
parent 7f74a56b14
commit 1977f93dac
1 changed files with 25 additions and 33 deletions
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58
hw/usb.c
View File

@ -140,8 +140,7 @@ static int do_token_in(USBDevice *s, USBPacket *p)
int request, value, index; int request, value, index;
int ret = 0; int ret = 0;
if (p->devep != 0) assert(p->devep == 0);
return usb_device_handle_data(s, p);
request = (s->setup_buf[0] << 8) | s->setup_buf[1]; request = (s->setup_buf[0] << 8) | s->setup_buf[1];
value = (s->setup_buf[3] << 8) | s->setup_buf[2]; value = (s->setup_buf[3] << 8) | s->setup_buf[2];
@ -187,8 +186,7 @@ static int do_token_in(USBDevice *s, USBPacket *p)
static int do_token_out(USBDevice *s, USBPacket *p) static int do_token_out(USBDevice *s, USBPacket *p)
{ {
if (p->devep != 0) assert(p->devep == 0);
return usb_device_handle_data(s, p);
switch(s->setup_state) { switch(s->setup_state) {
case SETUP_STATE_ACK: case SETUP_STATE_ACK:
@ -221,33 +219,6 @@ static int do_token_out(USBDevice *s, USBPacket *p)
} }
} }
/*
* Generic packet handler.
* Called by the HC (host controller).
*
* Returns length of the transaction or one of the USB_RET_XXX codes.
*/
static int usb_generic_handle_packet(USBDevice *s, USBPacket *p)
{
/* Rest of the PIDs must match our address */
if (s->state < USB_STATE_DEFAULT || p->devaddr != s->addr)
return USB_RET_NODEV;
switch (p->pid) {
case USB_TOKEN_SETUP:
return do_token_setup(s, p);
case USB_TOKEN_IN:
return do_token_in(s, p);
case USB_TOKEN_OUT:
return do_token_out(s, p);
default:
return USB_RET_STALL;
}
}
/* ctrl complete function for devices which use usb_generic_handle_packet and /* ctrl complete function for devices which use usb_generic_handle_packet and
may return USB_RET_ASYNC from their handle_control callback. Device code may return USB_RET_ASYNC from their handle_control callback. Device code
which does this *must* call this function instead of the normal which does this *must* call this function instead of the normal
@ -319,9 +290,30 @@ int usb_handle_packet(USBDevice *dev, USBPacket *p)
return USB_RET_NODEV; return USB_RET_NODEV;
} }
assert(dev->addr == p->devaddr); assert(dev->addr == p->devaddr);
assert(dev->state == USB_STATE_DEFAULT);
assert(p->owner == NULL); assert(p->owner == NULL);
ret = usb_generic_handle_packet(dev, p);
if (p->devep == 0) {
/* control pipe */
switch (p->pid) {
case USB_TOKEN_SETUP:
ret = do_token_setup(dev, p);
break;
case USB_TOKEN_IN:
ret = do_token_in(dev, p);
break;
case USB_TOKEN_OUT:
ret = do_token_out(dev, p);
break;
default:
ret = USB_RET_STALL;
break;
}
} else {
/* data pipe */
ret = usb_device_handle_data(dev, p);
}
if (ret == USB_RET_ASYNC) { if (ret == USB_RET_ASYNC) {
p->owner = usb_ep_get(dev, p->pid, p->devep); p->owner = usb_ep_get(dev, p->pid, p->devep);
} }