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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
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30
bdk/usb/xusbd.c
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@@ -881,7 +881,7 @@ int xusb_device_init()
_xusbd_init_device_clocks();
// Enable AHB redirect for access to IRAM for Event/EP ring buffers.
mc_enable_ahb_redirect(); // can be skipped if IRAM is not used/////////////////
mc_enable_ahb_redirect(); // Can be skipped if IRAM is not used.
// Enable XUSB device IPFS.
XUSB_DEV_DEV(XUSB_DEV_CONFIGURATION) |= DEV_CONFIGURATION_EN_FPCI;
@@ -1803,7 +1803,7 @@ int xusb_device_enumerate(usb_gadget_type gadget)
u32 timer = get_tmr_ms() + 90000;
while (true)
{
int res = _xusb_ep_operation(1000000); // 2s timeout.
int res = _xusb_ep_operation(USB_XFER_SYNCED_ENUM); // 2s timeout.
if (res && res != USB_ERROR_TIMEOUT)
return res;
@@ -1826,7 +1826,7 @@ void xusb_end(bool reset_ep, bool only_controller)
CLOCK(CLK_RST_CONTROLLER_RST_DEV_W_SET) = BIT(CLK_W_XUSB_PADCTL);
CLOCK(CLK_RST_CONTROLLER_CLK_ENB_W_CLR) = BIT(CLK_W_XUSB);
CLOCK(CLK_RST_CONTROLLER_RST_DEV_W_SET) = BIT(CLK_W_XUSB);
mc_disable_ahb_redirect();///////////////////
mc_disable_ahb_redirect(); // Can be skipped if IRAM is not used.
}
int xusb_handle_ep0_ctrl_setup()
@@ -1844,7 +1844,7 @@ int xusb_handle_ep0_ctrl_setup()
return USB_RES_OK;
}
int xusb_device_ep1_out_read(u8 *buf, u32 len, u32 *bytes_read, bool sync)
int xusb_device_ep1_out_read(u8 *buf, u32 len, u32 *bytes_read, u32 sync_tries)
{
if (len > USB_EP_BUFFER_MAX_SIZE)
len = USB_EP_BUFFER_MAX_SIZE;
@@ -1855,10 +1855,10 @@ int xusb_device_ep1_out_read(u8 *buf, u32 len, u32 *bytes_read, bool sync)
_xusb_issue_normal_trb(buf, len, USB_DIR_OUT);
usbd_xotg->tx_count[USB_DIR_OUT]++;
if (sync)
if (sync_tries)
{
while (!res && usbd_xotg->tx_count[USB_DIR_OUT])
res = _xusb_ep_operation(1000000); // 2s timeout.
res = _xusb_ep_operation(sync_tries);
if (bytes_read)
*bytes_read = res ? 0 : usbd_xotg->bytes_remaining[USB_DIR_OUT];
@@ -1882,7 +1882,7 @@ int xusb_device_ep1_out_read_big(u8 *buf, u32 len, u32 *bytes_read)
{
u32 len_ep = MIN(len, USB_EP_BUFFER_MAX_SIZE);
int res = xusb_device_ep1_out_read(buf_curr, len_ep, &bytes, USB_XFER_SYNCED);
int res = xusb_device_ep1_out_read(buf_curr, len_ep, &bytes, USB_XFER_SYNCED_DATA);
if (res)
return res;
@@ -1894,11 +1894,11 @@ int xusb_device_ep1_out_read_big(u8 *buf, u32 len, u32 *bytes_read)
return USB_RES_OK;
}
int xusb_device_ep1_out_reading_finish(u32 *pending_bytes, int tries)
int xusb_device_ep1_out_reading_finish(u32 *pending_bytes)
{
int res = USB_RES_OK;
while (!res && usbd_xotg->tx_count[USB_DIR_OUT])
res = _xusb_ep_operation(tries);
res = _xusb_ep_operation(USB_XFER_SYNCED); // Infinite retries.
if (pending_bytes)
*pending_bytes = res ? 0 : usbd_xotg->bytes_remaining[USB_DIR_OUT];
@@ -1908,7 +1908,7 @@ int xusb_device_ep1_out_reading_finish(u32 *pending_bytes, int tries)
return res;
}
int xusb_device_ep1_in_write(u8 *buf, u32 len, u32 *bytes_written, bool sync)
int xusb_device_ep1_in_write(u8 *buf, u32 len, u32 *bytes_written, u32 sync_tries)
{
if (len > USB_EP_BUFFER_MAX_SIZE)
len = USB_EP_BUFFER_MAX_SIZE;
@@ -1921,10 +1921,10 @@ int xusb_device_ep1_in_write(u8 *buf, u32 len, u32 *bytes_written, bool sync)
_xusb_issue_normal_trb(buf, len, USB_DIR_IN);
usbd_xotg->tx_count[USB_DIR_IN]++;
if (sync)
if (sync_tries)
{
while (!res && usbd_xotg->tx_count[USB_DIR_IN])
res = _xusb_ep_operation(1000000); // 2s timeout.
res = _xusb_ep_operation(sync_tries);
if (bytes_written)
*bytes_written = res ? 0 : usbd_xotg->bytes_remaining[USB_DIR_IN];
@@ -1947,7 +1947,7 @@ int xusb_device_ep1_in_writing_finish(u32 *pending_bytes)
{
int res = USB_RES_OK;
while (!res && usbd_xotg->tx_count[USB_DIR_IN])
res = _xusb_ep_operation(1000000); // 2s timeout.
res = _xusb_ep_operation(USB_XFER_SYNCED); // Infinite retries.
if (pending_bytes)
*pending_bytes = res ? 0 : usbd_xotg->bytes_remaining[USB_DIR_IN];
@@ -1973,7 +1973,7 @@ bool xusb_device_class_send_max_lun(u8 max_lun)
// Wait for request and transfer start.
while (usbd_xotg->device_state != XUSB_LUN_CONFIGURED)
{
_xusb_ep_operation(500000);
_xusb_ep_operation(USB_XFER_SYNCED_CLASS);
if (timer < get_tmr_ms() || btn_read_vol() == (BTN_VOL_UP | BTN_VOL_DOWN))
return true;
}
@@ -1991,7 +1991,7 @@ bool xusb_device_class_send_hid_report()
// Wait for request and transfer start.
while (usbd_xotg->device_state != XUSB_HID_CONFIGURED)
{
_xusb_ep_operation(500000);
_xusb_ep_operation(USB_XFER_SYNCED_CLASS);
if (timer < get_tmr_ms() || btn_read_vol() == (BTN_VOL_UP | BTN_VOL_DOWN))
return true;
}