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[pub/USBasp.git] / LUFA / Drivers / USB / HighLevel / ConfigDescriptor.h

diff --git a/LUFA/Drivers/USB/HighLevel/ConfigDescriptor.h b/LUFA/Drivers/USB/HighLevel/ConfigDescriptor.h
index 5c2b6e2..df5109d 100644 (file)
--- a/LUFA/Drivers/USB/HighLevel/ConfigDescriptor.h
+++ b/LUFA/Drivers/USB/HighLevel/ConfigDescriptor.h
@@ -1,21 +1,21 @@
 /*\r
              LUFA Library\r
 /*\r
              LUFA Library\r

-     Copyright (C) Dean Camera, 2009.\r
+     Copyright (C) Dean Camera, 2010.\r

               \r
   dean [at] fourwalledcubicle [dot] com\r
       www.fourwalledcubicle.com\r
 */\r
 \r
 /*\r
               \r
   dean [at] fourwalledcubicle [dot] com\r
       www.fourwalledcubicle.com\r
 */\r
 \r
 /*\r

-  Copyright 2009  Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
+  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)\r

 \r
 \r

-  Permission to use, copy, modify, and distribute this software\r
-  and its documentation for any purpose and without fee is hereby\r
-  granted, provided that the above copyright notice appear in all\r
-  copies and that both that the copyright notice and this\r
-  permission notice and warranty disclaimer appear in supporting\r
-  documentation, and that the name of the author not be used in\r
-  advertising or publicity pertaining to distribution of the\r
+  Permission to use, copy, modify, distribute, and sell this \r
+  software and its documentation for any purpose is hereby granted\r
+  without fee, provided that the above copyright notice appear in \r
+  all copies and that both that the copyright notice and this\r
+  permission notice and warranty disclaimer appear in supporting \r
+  documentation, and that the name of the author not be used in \r
+  advertising or publicity pertaining to distribution of the \r

   software without specific, written prior permission.\r
 \r
   The author disclaim all warranties with regard to this\r
   software without specific, written prior permission.\r
 \r
   The author disclaim all warranties with regard to this\r


@@ -78,7 +78,7 @@
                         *  // Can now access elements of the configuration header struct using the -> indirection operator\r
                         *  \endcode\r
                         */\r
                         *  // Can now access elements of the configuration header struct using the -> indirection operator\r
                         *  \endcode\r
                         */\r

-                       #define DESCRIPTOR_PCAST(DescriptorPtr, Type) ((Type*)DescriptorPtr)\r
+                       #define DESCRIPTOR_PCAST(DescriptorPtr, Type) ((Type*)(DescriptorPtr))\r

 \r
                        /** Casts a pointer to a descriptor inside the configuration descriptor into the given descriptor\r
                         *  type (as an actual struct instance rather than a pointer to a struct).\r
 \r
                        /** Casts a pointer to a descriptor inside the configuration descriptor into the given descriptor\r
                         *  type (as an actual struct instance rather than a pointer to a struct).\r


@@ -98,18 +98,10 @@
                         *  This value's meaning depends on the descriptor's placement in the descriptor, but standard type\r
                         *  values can be accessed in the \ref USB_DescriptorTypes_t enum.\r
                         */\r
                         *  This value's meaning depends on the descriptor's placement in the descriptor, but standard type\r
                         *  values can be accessed in the \ref USB_DescriptorTypes_t enum.\r
                         */\r

-                       #if defined(USE_NONSTANDARD_DESCRIPTOR_NAMES) || defined(__DOXYGEN__)\r
-                               #define DESCRIPTOR_TYPE(DescriptorPtr)    DESCRIPTOR_CAST(DescriptorPtr, USB_Descriptor_Header_t).Type\r
-                       #else\r
-                               #define DESCRIPTOR_TYPE(DescriptorPtr)    DESCRIPTOR_CAST(DescriptorPtr, USB_Descriptor_Header_t).bDescriptorType                       \r
-                       #endif\r
+                       #define DESCRIPTOR_TYPE(DescriptorPtr)    DESCRIPTOR_CAST(DescriptorPtr, USB_Descriptor_Header_t).Type\r

                        \r
                        /** Returns the descriptor's size, expressed as the 8-bit value indicating the number of bytes. */\r
                        \r
                        /** Returns the descriptor's size, expressed as the 8-bit value indicating the number of bytes. */\r

-                       #if defined(USE_NONSTANDARD_DESCRIPTOR_NAMES) || defined(__DOXYGEN__)\r
-                               #define DESCRIPTOR_SIZE(DescriptorPtr)    DESCRIPTOR_CAST(DescriptorPtr, USB_Descriptor_Header_t).Size\r
-                       #else\r
-                               #define DESCRIPTOR_SIZE(DescriptorPtr)    DESCRIPTOR_CAST(DescriptorPtr, USB_Descriptor_Header_t).bLength\r
-                       #endif\r
+                       #define DESCRIPTOR_SIZE(DescriptorPtr)    DESCRIPTOR_CAST(DescriptorPtr, USB_Descriptor_Header_t).Size\r

 \r
                /* Type Defines: */\r
                        /** Type define for a Configuration Descriptor comparator function (function taking a pointer to an array\r
 \r
                /* Type Defines: */\r
                        /** Type define for a Configuration Descriptor comparator function (function taking a pointer to an array\r


@@ -117,7 +109,7 @@
                         *\r
                         *  \see \ref USB_GetNextDescriptorComp function for more details\r
                         */\r
                         *\r
                         *  \see \ref USB_GetNextDescriptorComp function for more details\r
                         */\r

-                       typedef uint8_t (* const ConfigComparatorPtr_t)(void* const);\r
+                       typedef uint8_t (* const ConfigComparatorPtr_t)(void*);\r

 \r
                /* Function Prototypes: */\r
                        /** Searches for the next descriptor in the given configuration descriptor using a premade comparator\r
 \r
                /* Function Prototypes: */\r
                        /** Searches for the next descriptor in the given configuration descriptor using a premade comparator\r


@@ -133,9 +125,9 @@
                         *\r
                         *  \note This function is available in USB Host mode only.\r
                         *\r
                         *\r
                         *  \note This function is available in USB Host mode only.\r
                         *\r

-                        *  \param BytesRem  Pointer to an int storing the remaining bytes in the configuration descriptor\r
-                        *  \param CurrConfigLoc  Pointer to the current position in the configuration descriptor\r
-                        *  \param ComparatorRoutine  Name of the comparator search function to use on the configuration descriptor\r
+                        *  \param[in,out] BytesRem  Pointer to an int storing the remaining bytes in the configuration descriptor\r
+                        *  \param[in,out] CurrConfigLoc  Pointer to the current position in the configuration descriptor\r
+                        *  \param[in] ComparatorRoutine  Name of the comparator search function to use on the configuration descriptor\r

                         *\r
                         *  \return Value of one of the members of the \ref DSearch_Comp_Return_ErrorCodes_t enum\r
                         *\r
                         *\r
                         *  \return Value of one of the members of the \ref DSearch_Comp_Return_ErrorCodes_t enum\r
                         *\r


@@ -153,16 +145,34 @@
                         *\r
                         *  //...\r
                         *  // After retrieving configuration descriptor:\r
                         *\r
                         *  //...\r
                         *  // After retrieving configuration descriptor:\r

-                        *  if (USB_Host_GetNextDescriptorComp(&BytesRemaining, &ConfigDescriptorData, EndpointSearcher) ==\r
+                        *  if (USB_Host_GetNextDescriptorComp(&BytesRemaining, &CurrentConfigLoc, EndpointSearcher) ==\r

                         *      Descriptor_Search_Comp_Found)\r
                         *  {\r
                         *      // Do something with the endpoint descriptor\r
                         *  }\r
                         *  \endcode\r
                         */\r
                         *      Descriptor_Search_Comp_Found)\r
                         *  {\r
                         *      // Do something with the endpoint descriptor\r
                         *  }\r
                         *  \endcode\r
                         */\r

-                       uint8_t USB_GetNextDescriptorComp(uint16_t* BytesRem, uint8_t** CurrConfigLoc, ConfigComparatorPtr_t ComparatorRoutine);\r
+                       uint8_t USB_GetNextDescriptorComp(uint16_t* BytesRem, void** CurrConfigLoc, ConfigComparatorPtr_t ComparatorRoutine);\r

                        \r
                /* Enums: */\r
                        \r
                /* Enums: */\r

+                       /** Enum for the possible return codes of the \ref USB_Host_GetDeviceConfigDescriptor() function. */\r
+                       enum USB_Host_GetConfigDescriptor_ErrorCodes_t\r
+                       {\r
+                               HOST_GETCONFIG_Successful       = 0, /**< No error occurred while retrieving the configuration descriptor */\r
+                               HOST_GETCONFIG_DeviceDisconnect = 1, /**< The attached device was disconnected while retrieving the configuration\r
+                                                                       * descriptor\r
+                                                                       */\r
+                               HOST_GETCONFIG_PipeError        = 2, /**< An error occurred in the pipe while sending the request */\r
+                               HOST_GETCONFIG_SetupStalled     = 3, /**< The attached device stalled the request to retrieve the configuration\r
+                                                                       * descriptor\r
+                                                                       */\r
+                               HOST_GETCONFIG_SoftwareTimeOut  = 4, /**< The request or data transfer timed out */\r
+                               HOST_GETCONFIG_BuffOverflow     = 5, /**< The device's configuration descriptor is too large to fit into the allocated\r
+                                                                       * buffer\r
+                                                                       */\r
+                               HOST_GETCONFIG_InvalidData      = 6, /**< The device returned invalid configuration descriptor data */\r
+                       };\r
+               \r

                        /** Enum for return values of a descriptor comparator function. */\r
                        enum DSearch_Return_ErrorCodes_t\r
                        {\r
                        /** Enum for return values of a descriptor comparator function. */\r
                        enum DSearch_Return_ErrorCodes_t\r
                        {\r


@@ -181,81 +191,77 @@
                        };\r
        \r
                /* Function Prototypes: */\r
                        };\r
        \r
                /* Function Prototypes: */\r

-                       /** Retrieves the configuration descriptor data or size from an attached device via a standard request.\r
+                       /** Retrieves the configuration descriptor data from an attached device via a standard request into a buffer,\r
+                        *  including validity and size checking to prevent a buffer overflow.\r

                         *\r
                         *\r

-                        *  \param ConfigSizePtr  Pointer to a uint16_t for either storing or retrieving the configuration\r
-                        *         descriptor size\r
+                        *  \param[in] ConfigNumber  Device configuration descriptor number to fetch from the device (usually set to 1 for\r
+                        *                           single configuration devices)\r
+                        *  \param[in,out] ConfigSizePtr  Pointer to a uint16_t for storing the retrieved configuration descriptor size\r
+                        *  \param[out] BufferPtr  Pointer to the buffer for storing the configuration descriptor data.\r
+                        *  \param[out] BufferSize  Size of the allocated buffer where the configuration descriptor is to be stored\r

                         *\r
                         *\r

-                        *  \param BufferPtr  Pointer to the buffer for storing the configuration descriptor data. If this is\r
-                        *                    NULL, the size of the configuration descriptor will be retrieved instead and\r
-                        *                    placed in the variable pointed to by ConfigSizePtr. If this is non-NULL, the number\r
-                        *                    of bytes indicated by ConfigSizePtr of the configuration descriptor will be loaded\r
-                        *                    into the buffer\r
+                        *  \return A value from the \ref USB_Host_GetConfigDescriptor_ErrorCodes_t enum\r

                         */\r
                         */\r

-                       uint8_t USB_GetDeviceConfigDescriptor(uint16_t* const ConfigSizePtr, void* BufferPtr)\r
-                                                             ATTR_NON_NULL_PTR_ARG(1);\r
+                       uint8_t USB_Host_GetDeviceConfigDescriptor(uint8_t ConfigNumber, uint16_t* const ConfigSizePtr, void* BufferPtr,\r
+                                                                  uint16_t BufferSize) ATTR_NON_NULL_PTR_ARG(2) ATTR_NON_NULL_PTR_ARG(3);\r

 \r
                        /** Skips to the next sub-descriptor inside the configuration descriptor of the specified type value.\r
                         *  The bytes remaining value is automatically decremented.\r
                         *\r
 \r
                        /** Skips to the next sub-descriptor inside the configuration descriptor of the specified type value.\r
                         *  The bytes remaining value is automatically decremented.\r
                         *\r

-                        * \param BytesRem  Pointer to the number of bytes remaining of the configuration descriptor\r
-                        * \param CurrConfigLoc  Pointer to the current descriptor inside the configuration descriptor\r
-                        * \param Type  Descriptor type value to search for\r
+                        * \param[in,out] BytesRem  Pointer to the number of bytes remaining of the configuration descriptor\r
+                        * \param[in,out] CurrConfigLoc  Pointer to the current descriptor inside the configuration descriptor\r
+                        * \param[in] Type  Descriptor type value to search for\r

                         */\r
                        void USB_GetNextDescriptorOfType(uint16_t* const BytesRem,\r
                         */\r
                        void USB_GetNextDescriptorOfType(uint16_t* const BytesRem,\r

-                                                        uint8_t** const CurrConfigLoc,\r
+                                                        void** const CurrConfigLoc,\r

                                                         const uint8_t Type)\r
                                                         const uint8_t Type)\r

-                                                        ATTR_NON_NULL_PTR_ARG(1, 2);\r
+                                                        ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);\r

 \r
                        /** Skips to the next sub-descriptor inside the configuration descriptor of the specified type value,\r
                         *  which must come before a descriptor of the second given type value. If the BeforeType type\r
                         *  descriptor is reached first, the number of bytes remaining to process is set to zero and the\r
                         *  function exits. The bytes remaining value is automatically decremented.\r
                         *\r
 \r
                        /** Skips to the next sub-descriptor inside the configuration descriptor of the specified type value,\r
                         *  which must come before a descriptor of the second given type value. If the BeforeType type\r
                         *  descriptor is reached first, the number of bytes remaining to process is set to zero and the\r
                         *  function exits. The bytes remaining value is automatically decremented.\r
                         *\r

-                        * \param BytesRem  Pointer to the number of bytes remaining of the configuration descriptor\r
-                        * \param CurrConfigLoc  Pointer to the current descriptor inside the configuration descriptor\r
-                        * \param Type  Descriptor type value to search for\r
-                        * \param BeforeType  Descriptor type value which must not be reached before the given Type descriptor\r
+                        * \param[in,out] BytesRem  Pointer to the number of bytes remaining of the configuration descriptor\r
+                        * \param[in,out] CurrConfigLoc  Pointer to the current descriptor inside the configuration descriptor\r
+                        * \param[in] Type  Descriptor type value to search for\r
+                        * \param[in] BeforeType  Descriptor type value which must not be reached before the given Type descriptor\r

                         */\r
                        void USB_GetNextDescriptorOfTypeBefore(uint16_t* const BytesRem,\r
                         */\r
                        void USB_GetNextDescriptorOfTypeBefore(uint16_t* const BytesRem,\r

-                                                              uint8_t** const CurrConfigLoc,\r
+                                                              void** const CurrConfigLoc,\r

                                                               const uint8_t Type,\r
                                                               const uint8_t BeforeType)\r
                                                               const uint8_t Type,\r
                                                               const uint8_t BeforeType)\r

-                                                              ATTR_NON_NULL_PTR_ARG(1, 2);\r
+                                                              ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);\r

 \r
                        /** Skips to the next sub-descriptor inside the configuration descriptor of the specified type value,\r
                         *  which must come after a descriptor of the second given type value. The bytes remaining value is\r
                         *  automatically decremented.\r
                         *\r
 \r
                        /** Skips to the next sub-descriptor inside the configuration descriptor of the specified type value,\r
                         *  which must come after a descriptor of the second given type value. The bytes remaining value is\r
                         *  automatically decremented.\r
                         *\r

-                        * \param BytesRem  Pointer to the number of bytes remaining of the configuration descriptor\r
-                        * \param CurrConfigLoc  Pointer to the current descriptor inside the configuration descriptor\r
-                        * \param Type  Descriptor type value to search for\r
-                        * \param AfterType  Descriptor type value which must be reached before the given Type descriptor\r
+                        * \param[in,out] BytesRem  Pointer to the number of bytes remaining of the configuration descriptor\r
+                        * \param[in,out] CurrConfigLoc  Pointer to the current descriptor inside the configuration descriptor\r
+                        * \param[in] Type  Descriptor type value to search for\r
+                        * \param[in] AfterType  Descriptor type value which must be reached before the given Type descriptor\r

                         */\r
                        void USB_GetNextDescriptorOfTypeAfter(uint16_t* const BytesRem,\r
                         */\r
                        void USB_GetNextDescriptorOfTypeAfter(uint16_t* const BytesRem,\r

-                                                             uint8_t** const CurrConfigLoc,\r
+                                                             void** const CurrConfigLoc,\r

                                                              const uint8_t Type,\r
                                                              const uint8_t AfterType)\r
                                                              const uint8_t Type,\r
                                                              const uint8_t AfterType)\r

-                                                             ATTR_NON_NULL_PTR_ARG(1, 2);\r
+                                                             ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);\r

 \r
                /* Inline Functions: */\r
                        /** Skips over the current sub-descriptor inside the configuration descriptor, so that the pointer then\r
                            points to the next sub-descriptor. The bytes remaining value is automatically decremented.\r
                         *\r
 \r
                /* Inline Functions: */\r
                        /** Skips over the current sub-descriptor inside the configuration descriptor, so that the pointer then\r
                            points to the next sub-descriptor. The bytes remaining value is automatically decremented.\r
                         *\r

-                        * \param BytesRem  Pointer to the number of bytes remaining of the configuration descriptor\r
-                        * \param CurrConfigLoc  Pointer to the current descriptor inside the configuration descriptor\r
+                        * \param[in,out] BytesRem  Pointer to the number of bytes remaining of the configuration descriptor\r
+                        * \param[in,out] CurrConfigLoc  Pointer to the current descriptor inside the configuration descriptor\r

                         */\r
                        static inline void USB_GetNextDescriptor(uint16_t* const BytesRem,\r
                         */\r
                        static inline void USB_GetNextDescriptor(uint16_t* const BytesRem,\r

-                                                                uint8_t** const CurrConfigLoc) \r
-                                                                ATTR_NON_NULL_PTR_ARG(1, 2);                                                                     \r
+                                                                void** const CurrConfigLoc) \r
+                                                                ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);                                                                       \r

                        static inline void USB_GetNextDescriptor(uint16_t* const BytesRem,\r
                        static inline void USB_GetNextDescriptor(uint16_t* const BytesRem,\r

-                                                                uint8_t** const CurrConfigLoc)\r
+                                                                void** const CurrConfigLoc)\r

                        {\r
                        {\r

-                               #if defined(USE_NONSTANDARD_DESCRIPTOR_NAMES)\r

                                uint16_t CurrDescriptorSize = DESCRIPTOR_CAST(*CurrConfigLoc, USB_Descriptor_Header_t).Size;\r
                                uint16_t CurrDescriptorSize = DESCRIPTOR_CAST(*CurrConfigLoc, USB_Descriptor_Header_t).Size;\r

-                               #else\r
-                               uint16_t CurrDescriptorSize = DESCRIPTOR_CAST(*CurrConfigLoc, USB_Descriptor_Header_t).bLength;                         \r
-                               #endif\r

 \r
                                *CurrConfigLoc += CurrDescriptorSize;\r
                                *BytesRem      -= CurrDescriptorSize;\r
 \r
                                *CurrConfigLoc += CurrDescriptorSize;\r
                                *BytesRem      -= CurrDescriptorSize;\r