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uhci: Add a uhci_handle_td_error() helper function

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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 2012-10-31 12:54:36 +01:00 committed by Gerd Hoffmann
parent bb4d2b2f0a
commit faccca000f
1 changed files with 47 additions and 43 deletions
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90
hw/usb/hcd-uhci.c
View file

@ -735,9 +735,52 @@ static void uhci_read_td(UHCIState *s, UHCI_TD *td, uint32_t link)
le32_to_cpus(&td->buffer);
}
static int uhci_handle_td_error(UHCIState *s, UHCI_TD *td, uint32_t td_addr,
int status, uint32_t *int_mask)
{
uint32_t queue_token = uhci_queue_token(td);
int ret;
switch (status) {
case USB_RET_NAK:
td->ctrl |= TD_CTRL_NAK;
return TD_RESULT_NEXT_QH;
case USB_RET_STALL:
td->ctrl |= TD_CTRL_STALL;
trace_usb_uhci_packet_complete_stall(queue_token, td_addr);
ret = TD_RESULT_NEXT_QH;
break;
case USB_RET_BABBLE:
td->ctrl |= TD_CTRL_BABBLE | TD_CTRL_STALL;
/* frame interrupted */
trace_usb_uhci_packet_complete_babble(queue_token, td_addr);
ret = TD_RESULT_STOP_FRAME;
break;
case USB_RET_IOERROR:
case USB_RET_NODEV:
default:
td->ctrl |= TD_CTRL_TIMEOUT;
td->ctrl &= ~(3 << TD_CTRL_ERROR_SHIFT);
trace_usb_uhci_packet_complete_error(queue_token, td_addr);
ret = TD_RESULT_NEXT_QH;
break;
}
td->ctrl &= ~TD_CTRL_ACTIVE;
s->status |= UHCI_STS_USBERR;
if (td->ctrl & TD_CTRL_IOC) {
*int_mask |= 0x01;
}
uhci_update_irq(s);
return ret;
}
static int uhci_complete_td(UHCIState *s, UHCI_TD *td, UHCIAsync *async, uint32_t *int_mask)
{
int len = 0, max_len, err, ret;
int len = 0, max_len, ret;
uint8_t pid;
max_len = ((td->token >> 21) + 1) & 0x7ff;
@ -748,8 +791,9 @@ static int uhci_complete_td(UHCIState *s, UHCI_TD *td, UHCIAsync *async, uint32_
if (td->ctrl & TD_CTRL_IOS)
td->ctrl &= ~TD_CTRL_ACTIVE;
if (ret < 0)
goto out;
if (ret < 0) {
return uhci_handle_td_error(s, td, async->td_addr, ret, int_mask);
}
len = async->packet.result;
td->ctrl = (td->ctrl & ~0x7ff) | ((len - 1) & 0x7ff);
@ -775,46 +819,6 @@ static int uhci_complete_td(UHCIState *s, UHCI_TD *td, UHCIAsync *async, uint32_
trace_usb_uhci_packet_complete_success(async->queue->token,
async->td_addr);
return TD_RESULT_COMPLETE;
out:
switch(ret) {
case USB_RET_NAK:
td->ctrl |= TD_CTRL_NAK;
return TD_RESULT_NEXT_QH;
case USB_RET_STALL:
td->ctrl |= TD_CTRL_STALL;
trace_usb_uhci_packet_complete_stall(async->queue->token,
async->td_addr);
err = TD_RESULT_NEXT_QH;
break;
case USB_RET_BABBLE:
td->ctrl |= TD_CTRL_BABBLE | TD_CTRL_STALL;
/* frame interrupted */
trace_usb_uhci_packet_complete_babble(async->queue->token,
async->td_addr);
err = TD_RESULT_STOP_FRAME;
break;
case USB_RET_IOERROR:
case USB_RET_NODEV:
default:
td->ctrl |= TD_CTRL_TIMEOUT;
td->ctrl &= ~(3 << TD_CTRL_ERROR_SHIFT);
trace_usb_uhci_packet_complete_error(async->queue->token,
async->td_addr);
err = TD_RESULT_NEXT_QH;
break;
}
td->ctrl &= ~TD_CTRL_ACTIVE;
s->status |= UHCI_STS_USBERR;
if (td->ctrl & TD_CTRL_IOC) {
*int_mask |= 0x01;
}
uhci_update_irq(s);
return err;
}
static int uhci_handle_td(UHCIState *s, UHCIQueue *q, uint32_t qh_addr,