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usb: Rework timeouts

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- Rework all timeouts to be more relaxed when doing big data transfers.
- Fix a bug where async transfer would timeout sooner instead of infinite tries.

Both showed up in Arch Linux, because of it's huge latency USB stack latency that can reach 1-2s.

The rework will let every OS work without adding additional wait time in the gadget loops.
This commit is contained in:
CTCaer
2020-12-30 13:37:36 +02:00
parent 2c695e9a96
commit 4949331f4c
5 changed files with 50 additions and 46 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
bdk/usb/usb_gadget_ums.c
View File

@@ -315,13 +315,13 @@ static void ums_flush_endpoint(u32 ep)
usb_ops.usbd_flush_endpoint(ep);
}
static void _ums_transfer_start(usbd_gadget_ums_t *ums, bulk_ctxt_t *bulk_ctxt, u32 ep, bool sync)
static void _ums_transfer_start(usbd_gadget_ums_t *ums, bulk_ctxt_t *bulk_ctxt, u32 ep, u32 sync_timeout)
{
if (ep == bulk_ctxt->bulk_in)
{
bulk_ctxt->bulk_in_status = usb_ops.usb_device_ep1_in_write(
bulk_ctxt->bulk_in_buf, bulk_ctxt->bulk_in_length,
&bulk_ctxt->bulk_in_length_actual, sync);
&bulk_ctxt->bulk_in_length_actual, sync_timeout);
if (bulk_ctxt->bulk_in_status == USB_ERROR_XFER_ERROR)
{
@@ -331,14 +331,14 @@ static void _ums_transfer_start(usbd_gadget_ums_t *ums, bulk_ctxt_t *bulk_ctxt,
else if (bulk_ctxt->bulk_in_status == USB2_ERROR_XFER_NOT_ALIGNED)
ums->set_text(ums->label, "#FFDD00 Error:# EP IN Buffer not aligned!");
if (sync)
if (sync_timeout)
bulk_ctxt->bulk_in_buf_state = BUF_STATE_EMPTY;
}
else
{
bulk_ctxt->bulk_out_status = usb_ops.usb_device_ep1_out_read(
bulk_ctxt->bulk_out_buf, bulk_ctxt->bulk_out_length,
&bulk_ctxt->bulk_out_length_actual, sync);
&bulk_ctxt->bulk_out_length_actual, sync_timeout);
if (bulk_ctxt->bulk_out_status == USB_ERROR_XFER_ERROR)
{
@@ -348,7 +348,7 @@ static void _ums_transfer_start(usbd_gadget_ums_t *ums, bulk_ctxt_t *bulk_ctxt,
else if (bulk_ctxt->bulk_out_status == USB2_ERROR_XFER_NOT_ALIGNED)
ums->set_text(ums->label, "#FFDD00 Error:# EP OUT Buffer not aligned!");
if (sync)
if (sync_timeout)
bulk_ctxt->bulk_out_buf_state = BUF_STATE_FULL;
}
}
@@ -386,7 +386,7 @@ static void _ums_transfer_finish(usbd_gadget_ums_t *ums, bulk_ctxt_t *bulk_ctxt,
else
{
bulk_ctxt->bulk_out_status = usb_ops.usb_device_ep1_out_reading_finish(
&bulk_ctxt->bulk_out_length_actual, 1000000);
&bulk_ctxt->bulk_out_length_actual);
if (bulk_ctxt->bulk_out_status == USB_ERROR_XFER_ERROR)
{
@@ -1407,7 +1407,7 @@ static int pad_with_zeros(usbd_gadget_ums_t *ums, bulk_ctxt_t *bulk_ctxt)
u32 nsend = MIN(ums->usb_amount_left, USB_EP_BUFFER_MAX_SIZE);
memset(bulk_ctxt->bulk_in_buf + current_len_to_keep, 0, nsend - current_len_to_keep);
bulk_ctxt->bulk_in_length = nsend;
_ums_transfer_start(ums, bulk_ctxt, bulk_ctxt->bulk_in, USB_XFER_SYNCED);
_ums_transfer_start(ums, bulk_ctxt, bulk_ctxt->bulk_in, USB_XFER_SYNCED_DATA);
ums->usb_amount_left -= nsend;
current_len_to_keep = 0;
}
@@ -1425,7 +1425,7 @@ static int throw_away_data(usbd_gadget_ums_t *ums, bulk_ctxt_t *bulk_ctxt)
u32 amount = MIN(ums->usb_amount_left, USB_EP_BUFFER_MAX_SIZE);
bulk_ctxt->bulk_out_length = amount;
_ums_transfer_start(ums, bulk_ctxt, bulk_ctxt->bulk_out, USB_XFER_SYNCED);
_ums_transfer_start(ums, bulk_ctxt, bulk_ctxt->bulk_out, USB_XFER_SYNCED_DATA);
ums->usb_amount_left -= amount;
return UMS_RES_OK;
@@ -1472,7 +1472,7 @@ static int finish_reply(usbd_gadget_ums_t *ums, bulk_ctxt_t *bulk_ctxt)
// If there's no residue, simply send the last buffer.
if (!ums->residue)
{
_ums_transfer_start(ums, bulk_ctxt, bulk_ctxt->bulk_in, USB_XFER_SYNCED);
_ums_transfer_start(ums, bulk_ctxt, bulk_ctxt->bulk_in, USB_XFER_SYNCED_DATA);
/* For Bulk-only, if we're allowed to stall then send the
* short packet and halt the bulk-in endpoint. If we can't
@@ -1480,7 +1480,7 @@ static int finish_reply(usbd_gadget_ums_t *ums, bulk_ctxt_t *bulk_ctxt)
}
else if (ums->can_stall)
{
_ums_transfer_start(ums, bulk_ctxt, bulk_ctxt->bulk_in, USB_XFER_SYNCED);
_ums_transfer_start(ums, bulk_ctxt, bulk_ctxt->bulk_in, USB_XFER_SYNCED_DATA);
rc = ums_set_stall(bulk_ctxt->bulk_in);
ums->set_text(ums->label, "#FFDD00 Error:# Residue. Stalled EP IN!");
}
@@ -1661,7 +1661,7 @@ static int get_next_command(usbd_gadget_ums_t *ums, bulk_ctxt_t *bulk_ctxt)
bulk_ctxt->bulk_out_length = USB_BULK_CB_WRAP_LEN;
/* Queue a request to read a Bulk-only CBW */
_ums_transfer_start(ums, bulk_ctxt, bulk_ctxt->bulk_out, USB_XFER_SYNCED);
_ums_transfer_start(ums, bulk_ctxt, bulk_ctxt->bulk_out, USB_XFER_SYNCED_CMD);
/* We will drain the buffer in software, which means we
* can reuse it for the next filling. No need to advance
@@ -1707,7 +1707,7 @@ static void send_status(usbd_gadget_ums_t *ums, bulk_ctxt_t *bulk_ctxt)
csw->Status = status;
bulk_ctxt->bulk_in_length = USB_BULK_CS_WRAP_LEN;
_ums_transfer_start(ums, bulk_ctxt, bulk_ctxt->bulk_in, USB_XFER_SYNCED);
_ums_transfer_start(ums, bulk_ctxt, bulk_ctxt->bulk_in, USB_XFER_SYNCED_CMD);
}
static void handle_exception(usbd_gadget_ums_t *ums, bulk_ctxt_t *bulk_ctxt)