Merge pull request #3399 from hathach/size-reduce

edpt stream only support no fifo mode if needed

3 files changed, 39 insertions, 64 deletions

diff --git a/src/common/tusb_compiler.h b/src/common/tusb_compiler.h
index 7719790d1..f20834cea 100644
--- a/src/common/tusb_compiler.h
+++ b/src/common/tusb_compiler.h
@@ -24,21 +24,13 @@
  * This file is part of the TinyUSB stack.
  */
 
-/** \ingroup Group_Common
- *  \defgroup Group_Compiler Compiler
- *  \brief Group_Compiler brief
- *  @{ */
-
-#ifndef TUSB_COMPILER_H_
-#define TUSB_COMPILER_H_
+#pragma once
 
 #define TU_TOKEN(x)           x
 #define TU_STRING(x)          #x                  ///< stringify without expand
 #define TU_XSTRING(x)         TU_STRING(x)        ///< expand then stringify
-
 #define TU_STRCAT(a, b)       a##b                ///< concat without expand
 #define TU_STRCAT3(a, b, c)   a##b##c             ///< concat without expand
-
 #define TU_XSTRCAT(a, b)      TU_STRCAT(a, b)     ///< expand then concat
 #define TU_XSTRCAT3(a, b, c)  TU_STRCAT3(a, b, c) ///< expand then concat 3 tokens
 
@@ -139,18 +131,20 @@
 #define TU_FUNC_OPTIONAL_ARG(func, ...)   TU_XSTRCAT(func##_arg, TU_ARGS_NUM(__VA_ARGS__))(__VA_ARGS__)
 
 //--------------------------------------------------------------------+
-// Compiler porting with Attribute and Endian
+// Compiler Attribute Abstraction
 //--------------------------------------------------------------------+
+#if defined(__GNUC__) || defined(__ICCARM__) || defined(__TI_COMPILER_VERSION__)
+  #if defined(__ICCARM__)
+    #include <intrinsics.h> // for builtin functions
+  #endif
 
-// TODO refactor since __attribute__ is supported across many compiler
-#if defined(__GNUC__)
-  #define TU_ATTR_ALIGNED(Bytes)        __attribute__ ((aligned(Bytes)))
-  #define TU_ATTR_SECTION(sec_name)     __attribute__ ((section(#sec_name)))
-  #define TU_ATTR_PACKED                __attribute__ ((packed))
-  #define TU_ATTR_WEAK                  __attribute__ ((weak))
-  // #define TU_ATTR_WEAK_ALIAS(f)         __attribute__ ((weak, alias(#f)))
-  #ifndef TU_ATTR_ALWAYS_INLINE // allow to override for debug
-    #define TU_ATTR_ALWAYS_INLINE       __attribute__ ((always_inline))
+  #define TU_ATTR_ALIGNED(Bytes)    __attribute__((aligned(Bytes)))
+  #define TU_ATTR_SECTION(sec_name) __attribute__((section(#sec_name)))
+  #define TU_ATTR_PACKED            __attribute__((packed))
+  #define TU_ATTR_WEAK              __attribute__((weak))
+// #define TU_ATTR_WEAK_ALIAS(f)         __attribute__ ((weak, alias(#f)))
+  #ifndef TU_ATTR_ALWAYS_INLINE                                            // allow to override for debug
+    #define TU_ATTR_ALWAYS_INLINE __attribute__((always_inline))
   #endif
   #define TU_ATTR_DEPRECATED(mess)      __attribute__ ((deprecated(mess))) // warn if function with this attribute is used
   #define TU_ATTR_UNUSED                __attribute__ ((unused))           // Function/Variable is meant to be possibly unused
@@ -161,18 +155,17 @@
   #define TU_ATTR_BIT_FIELD_ORDER_BEGIN
   #define TU_ATTR_BIT_FIELD_ORDER_END
 
-  #if __GNUC__ < 5
-    #define TU_ATTR_FALLTHROUGH         do {} while (0)  /* fallthrough */
+  #if (defined(__has_attribute) && __has_attribute(__fallthrough__)) || defined(__TI_COMPILER_VERSION__)
+    #define TU_ATTR_FALLTHROUGH __attribute__((fallthrough))
   #else
-    #if __has_attribute(__fallthrough__)
-      #define TU_ATTR_FALLTHROUGH         __attribute__((fallthrough))
-    #else
-      #define TU_ATTR_FALLTHROUGH         do {} while (0)  /* fallthrough */
-    #endif
+    #define TU_ATTR_FALLTHROUGH     \
+      do {                          \
+      } while (0) /* fallthrough */
   #endif
 
-  // Endian conversion use well-known host to network (big endian) naming
-  #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+// Endian conversion use well-known host to network (big endian) naming
+// For TI ARM compiler, __BYTE_ORDER__ is not defined for MSP430 but still LE
+  #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ || defined(__MSP430__)
     #define TU_BYTE_ORDER TU_LITTLE_ENDIAN
   #else
     #define TU_BYTE_ORDER TU_BIG_ENDIAN
@@ -190,39 +183,12 @@
     #define TU_BSWAP32(u32) (__builtin_bswap32(u32))
   #endif
 
-	#ifndef __ARMCC_VERSION
   // List of obsolete callback function that is renamed and should not be defined.
   // Put it here since only gcc support this pragma
-		#pragma GCC poison tud_vendor_control_request_cb
-	#endif
-
-#elif defined(__TI_COMPILER_VERSION__)
-  #define TU_ATTR_ALIGNED(Bytes)        __attribute__ ((aligned(Bytes)))
-  #define TU_ATTR_SECTION(sec_name)     __attribute__ ((section(#sec_name)))
-  #define TU_ATTR_PACKED                __attribute__ ((packed))
-  #define TU_ATTR_WEAK                  __attribute__ ((weak))
-  // #define TU_ATTR_WEAK_ALIAS(f)         __attribute__ ((weak, alias(#f)))
-  #define TU_ATTR_ALWAYS_INLINE         __attribute__ ((always_inline))
-  #define TU_ATTR_DEPRECATED(mess)      __attribute__ ((deprecated(mess))) // warn if function with this attribute is used
-  #define TU_ATTR_UNUSED                __attribute__ ((unused))           // Function/Variable is meant to be possibly unused
-  #define TU_ATTR_USED                  __attribute__ ((used))
-  #define TU_ATTR_FALLTHROUGH           __attribute__((fallthrough))
-
-  #define TU_ATTR_PACKED_BEGIN
-  #define TU_ATTR_PACKED_END
-  #define TU_ATTR_BIT_FIELD_ORDER_BEGIN
-  #define TU_ATTR_BIT_FIELD_ORDER_END
-
-  // __BYTE_ORDER is defined in the TI ARM compiler, but not MSP430 (which is little endian)
-  #if ((__BYTE_ORDER__) == (__ORDER_LITTLE_ENDIAN__)) || defined(__MSP430__)
-    #define TU_BYTE_ORDER TU_LITTLE_ENDIAN
-  #else
-    #define TU_BYTE_ORDER TU_BIG_ENDIAN
+  #if !defined(__ARMCC_VERSION) && !defined(__ICCARM__)
+    #pragma GCC poison tud_vendor_control_request_cb
   #endif
 
-  #define TU_BSWAP16(u16) (__builtin_bswap16(u16))
-  #define TU_BSWAP32(u32) (__builtin_bswap32(u32))
-
 #elif defined(__ICCARM__)
   #include <intrinsics.h>
   #define TU_ATTR_ALIGNED(Bytes)        __attribute__ ((aligned(Bytes)))
@@ -316,7 +282,3 @@
 #else
   #error Byte order is undefined
 #endif
-
-#endif /* TUSB_COMPILER_H_ */
-
-/// @}
diff --git a/src/common/tusb_fifo.h b/src/common/tusb_fifo.h
index 42f154bca..94ab421bb 100644
--- a/src/common/tusb_fifo.h
+++ b/src/common/tusb_fifo.h
@@ -224,10 +224,11 @@ TU_ATTR_ALWAYS_INLINE static inline uint16_t tu_fifo_write_n(tu_fifo_t *f, const
 //--------------------------------------------------------------------+
 // return overflowable count (index difference), which can be used to determine both fifo count and an overflow state
 TU_ATTR_ALWAYS_INLINE static inline uint16_t tu_ff_overflow_count(uint16_t depth, uint16_t wr_idx, uint16_t rd_idx) {
-  if (wr_idx >= rd_idx) {
-    return (uint16_t)(wr_idx - rd_idx);
+  const int32_t diff = (int32_t)wr_idx - (int32_t)rd_idx;
+  if (diff >= 0) {
+    return (uint16_t)diff;
   } else {
-    return (uint16_t)(2 * depth - (rd_idx - wr_idx));
+    return (uint16_t)(2 * depth + diff);
   }
 }
 
diff --git a/src/common/tusb_private.h b/src/common/tusb_private.h
index 8643bb020..0e9eef732 100644
--- a/src/common/tusb_private.h
+++ b/src/common/tusb_private.h
@@ -33,6 +33,18 @@
  extern "C" {
 #endif
 
+//--------------------------------------------------------------------+
+// Configuration
+//--------------------------------------------------------------------+
+
+#if CFG_TUD_ENABLED && CFG_TUD_VENDOR && (CFG_TUD_VENDOR_TX_BUFSIZE == 0 || CFG_TUD_VENDOR_RX_BUFSIZE == 0)
+  #define CFG_TUSB_EDPT_STREAM_NO_FIFO_ENABLED 1
+#endif
+
+#ifndef CFG_TUSB_EDPT_STREAM_NO_FIFO_ENABLED
+  #define CFG_TUSB_EDPT_STREAM_NO_FIFO_ENABLED 0
+#endif
+
 #define TUP_USBIP_CONTROLLER_NUM 2
 extern tusb_role_t _tusb_rhport_role[TUP_USBIP_CONTROLLER_NUM];