add CFG_TUD_DWC2_DMA, make it compile time option

src/common/tusb_mcu.h

@@ -524,7 +524,7 @@
   #define TUP_DCD_EDPT_ISO_ALLOC
 #endif
 
-#if defined(TUP_USBIP_DWC2)
+#if defined(TUP_USBIP_DWC2) // && CFG_TUD_DWC2_DMA == 0
   #define TUP_MEM_CONST_ADDR
 #endif
 

src/portable/synopsys/dwc2/dcd_dwc2.c

@@ -95,16 +95,13 @@ static bool _sof_en;
 //--------------------------------------------------------------------
 
 TU_ATTR_ALWAYS_INLINE static inline bool dma_enabled(const dwc2_regs_t* dwc2) {
+  #if !CFG_TUD_DWC2_DMA
   (void) dwc2;
-  // DMA doesn't support fifo transfer
-#ifdef TUD_AUDIO_PREFER_RING_BUFFER
-#if TUD_AUDIO_PREFER_RING_BUFFER
   return false;
-#endif
+  #else
-#endif
   // Internal DMA only
   return (dwc2->ghwcfg2_bm.arch == GHWCFG2_ARCH_INTERNAL_DMA);
-  // return false;
+  #endif
 }
 
 TU_ATTR_ALWAYS_INLINE static inline uint16_t dma_cal_epfifo_base(uint8_t rhport) {

src/tusb_option.h

@@ -228,7 +228,7 @@
 #define OPT_MODE_SPEED_MASK     0xff00
 
 //--------------------------------------------------------------------+
-// Include tusb_config.h and tusb_mcu.h
+// Include tusb_config.h
 //--------------------------------------------------------------------+
 
 // Allow to use command line to change the config name/location
@@ -238,6 +238,29 @@
   #include "tusb_config.h"
 #endif
 
+//--------------------------------------------------------------------+
+// USBIP
+//--------------------------------------------------------------------+
+
+// DWC2 controller: use DMA for data transfer
+#ifndef CFG_TUD_DWC2_DMA
+  #define CFG_TUD_DWC2_DMA 1
+#endif
+
+// Enable PIO-USB software host controller
+#ifndef CFG_TUH_RPI_PIO_USB
+  #define CFG_TUH_RPI_PIO_USB 0
+#endif
+
+#ifndef CFG_TUD_RPI_PIO_USB
+  #define CFG_TUD_RPI_PIO_USB 0
+#endif
+
+// MAX3421 Host controller option
+#ifndef CFG_TUH_MAX3421
+  #define CFG_TUH_MAX3421  0
+#endif
+
 #include "common/tusb_mcu.h"
 
 //--------------------------------------------------------------------
@@ -548,20 +571,6 @@
   #define CFG_TUH_API_EDPT_XFER 0
 #endif
 
-// Enable PIO-USB software host controller
-#ifndef CFG_TUH_RPI_PIO_USB
-  #define CFG_TUH_RPI_PIO_USB 0
-#endif
-
-#ifndef CFG_TUD_RPI_PIO_USB
-  #define CFG_TUD_RPI_PIO_USB 0
-#endif
-
-// MAX3421 Host controller option
-#ifndef CFG_TUH_MAX3421
-  #define CFG_TUH_MAX3421  0
-#endif
-
 //--------------------------------------------------------------------+
 // TypeC Options (Default)
 //--------------------------------------------------------------------+