update(port/dwc2): add limit for transfer size

Signed-off-by: sakumisu <1203593632@qq.com>

Author: sakumisu

port/dwc2/usb_dc_dwc2.c

@@ -918,6 +918,11 @@ int usbd_ep_start_write(uint8_t busid, const uint8_t ep, const uint8_t *data, ui
     } else {
         pktcnt = (uint16_t)((data_len + g_dwc2_udc[busid].in_ep[ep_idx].ep_mps - 1U) / g_dwc2_udc[busid].in_ep[ep_idx].ep_mps);
 
+        if (pktcnt > g_dwc2_udc[busid].hw_params.max_packet_count) {
+            pktcnt = g_dwc2_udc[busid].hw_params.max_packet_count; // pktcnt 10bits
+        }
+
+        data_len = MIN(g_dwc2_udc[busid].hw_params.max_packet_count * g_dwc2_udc[busid].in_ep[ep_idx].ep_mps, data_len);
         USB_OTG_INEP(ep_idx)->DIEPTSIZ |= (USB_OTG_DIEPTSIZ_PKTCNT & (pktcnt << 19));
         USB_OTG_INEP(ep_idx)->DIEPTSIZ |= (USB_OTG_DIEPTSIZ_XFRSIZ & data_len);
     }
@@ -995,6 +1000,12 @@ int usbd_ep_start_read(uint8_t busid, const uint8_t ep, uint8_t *data, uint32_t
     } else {
         pktcnt = (uint16_t)((data_len + g_dwc2_udc[busid].out_ep[ep_idx].ep_mps - 1U) / g_dwc2_udc[busid].out_ep[ep_idx].ep_mps);
 
+        if (pktcnt > g_dwc2_udc[busid].hw_params.max_packet_count) {
+            pktcnt = g_dwc2_udc[busid].hw_params.max_packet_count; // pktcnt 10bits
+        }
+
+        data_len = pktcnt * g_dwc2_udc[busid].out_ep[ep_idx].ep_mps;
+
         USB_OTG_OUTEP(ep_idx)->DOEPTSIZ |= (USB_OTG_DOEPTSIZ_PKTCNT & (pktcnt << 19));
         USB_OTG_OUTEP(ep_idx)->DOEPTSIZ |= (USB_OTG_DOEPTSIZ_XFRSIZ & data_len);
     }

port/dwc2/usb_hc_dwc2.c

@@ -509,8 +509,8 @@ static uint16_t dwc2_calculate_packet_num(uint32_t input_size, uint8_t ep_addr,
 
     num_packets = (uint16_t)((input_size + ep_mps - 1U) / ep_mps);
 
-    if (num_packets > 0x3FF) {
-        num_packets = 0x3FF; // pktcnt 10bits
+    if (num_packets > g_dwc2_hcd[busid].hw_params.max_packet_count) {
+        num_packets = g_dwc2_hcd[busid].hw_params.max_packet_count; // pktcnt 10bits
     }
 
     if (input_size == 0) {
@@ -520,6 +520,7 @@ static uint16_t dwc2_calculate_packet_num(uint32_t input_size, uint8_t ep_addr,
     if (ep_addr & 0x80) {
         input_size = num_packets * ep_mps;
     } else {
+        input_size = MIN(g_dwc2_hcd[busid].hw_params.max_packet_count * ep_mps, input_size);
     }
 
     *output_size = input_size;