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Code Issues Releases Wiki Activity

fix(core/embed): fix random delays in usb driver

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This commit is contained in:
cepetr 2024-05-28 13:21:23 +02:00 committed by cepetr
parent 799a78525f
commit f5d35da635
3 changed files with 8 additions and 6 deletions
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6
core/embed/trezorhal/stm32f4/usb.c
View File

@ -487,12 +487,10 @@ static uint8_t usb_class_setup(USBD_HandleTypeDef *dev,
}
switch (usb_ifaces[req->wIndex].type) {
case USB_IFACE_TYPE_HID:
wait_random();
return usb_hid_class_setup(dev, &usb_ifaces[req->wIndex].hid, req);
case USB_IFACE_TYPE_VCP:
return usb_vcp_class_setup(dev, &usb_ifaces[req->wIndex].vcp, req);
case USB_IFACE_TYPE_WEBUSB:
wait_random();
return usb_webusb_class_setup(dev, &usb_ifaces[req->wIndex].webusb,
req);
default:
@ -511,14 +509,12 @@ static uint8_t usb_class_data_in(USBD_HandleTypeDef *dev, uint8_t ep_num) {
for (int i = 0; i < USBD_MAX_NUM_INTERFACES; i++) {
switch (usb_ifaces[i].type) {
case USB_IFACE_TYPE_HID:
wait_random();
usb_hid_class_data_in(dev, &usb_ifaces[i].hid, ep_num);
break;
case USB_IFACE_TYPE_VCP:
usb_vcp_class_data_in(dev, &usb_ifaces[i].vcp, ep_num);
break;
case USB_IFACE_TYPE_WEBUSB:
wait_random();
usb_webusb_class_data_in(dev, &usb_ifaces[i].webusb, ep_num);
break;
default:
@ -535,14 +531,12 @@ static uint8_t usb_class_data_out(USBD_HandleTypeDef *dev, uint8_t ep_num) {
for (int i = 0; i < USBD_MAX_NUM_INTERFACES; i++) {
switch (usb_ifaces[i].type) {
case USB_IFACE_TYPE_HID:
wait_random();
usb_hid_class_data_out(dev, &usb_ifaces[i].hid, ep_num);
break;
case USB_IFACE_TYPE_VCP:
usb_vcp_class_data_out(dev, &usb_ifaces[i].vcp, ep_num);
break;
case USB_IFACE_TYPE_WEBUSB:
wait_random();
usb_webusb_class_data_out(dev, &usb_ifaces[i].webusb, ep_num);
break;
default:

4
core/embed/trezorhal/stm32f4/usb_hid-impl.h
View File

@ -267,6 +267,8 @@ static void usb_hid_class_deinit(USBD_HandleTypeDef *dev,
static int usb_hid_class_setup(USBD_HandleTypeDef *dev, usb_hid_state_t *state,
USBD_SetupReqTypedef *req) {
wait_random();
switch (req->bmRequest & USB_REQ_TYPE_MASK) {
// Class request
case USB_REQ_TYPE_CLASS:
@ -340,6 +342,7 @@ static int usb_hid_class_setup(USBD_HandleTypeDef *dev, usb_hid_state_t *state,
static void usb_hid_class_data_in(USBD_HandleTypeDef *dev,
usb_hid_state_t *state, uint8_t ep_num) {
if ((ep_num | USB_EP_DIR_IN) == state->ep_in) {
wait_random();
state->ep_in_is_idle = 1;
}
}
@ -347,6 +350,7 @@ static void usb_hid_class_data_in(USBD_HandleTypeDef *dev,
static void usb_hid_class_data_out(USBD_HandleTypeDef *dev,
usb_hid_state_t *state, uint8_t ep_num) {
if (ep_num == state->ep_out) {
wait_random();
// Save the report length to indicate we have read something, but don't
// schedule next reading until user reads this one
state->last_read_len = USBD_LL_GetRxDataSize(dev, ep_num);

4
core/embed/trezorhal/stm32f4/usb_webusb-impl.h
View File

@ -243,6 +243,8 @@ static int usb_webusb_class_setup(USBD_HandleTypeDef *dev,
return USBD_OK;
}
wait_random();
switch (req->bRequest) {
case USB_REQ_SET_INTERFACE:
state->alt_setting = req->wValue;
@ -263,6 +265,7 @@ static void usb_webusb_class_data_in(USBD_HandleTypeDef *dev,
usb_webusb_state_t *state,
uint8_t ep_num) {
if ((ep_num | USB_EP_DIR_IN) == state->ep_in) {
wait_random();
state->ep_in_is_idle = 1;
}
}
@ -271,6 +274,7 @@ static void usb_webusb_class_data_out(USBD_HandleTypeDef *dev,
usb_webusb_state_t *state,
uint8_t ep_num) {
if (ep_num == state->ep_out) {
wait_random();
// Save the report length to indicate we have read something, but don't
// schedule next reading until user reads this one
state->last_read_len = USBD_LL_GetRxDataSize(dev, ep_num);