Import fatfs R0.10b

[z180-stamp.git] / fatfs / src / option / syscall.c

diff --git a/fatfs/src/option/syscall.c b/fatfs/src/option/syscall.c
new file mode 100644 (file)
index 0000000..ccfd47e
--- /dev/null
+++ b/fatfs/src/option/syscall.c
@@ -0,0 +1,153 @@
+/*------------------------------------------------------------------------*/\r
+/* Sample code of OS dependent controls for FatFs                         */\r
+/* (C)ChaN, 2012                                                          */\r
+/*------------------------------------------------------------------------*/\r
+\r
+#include <stdlib.h>            /* ANSI memory controls */\r
+#include <malloc.h>            /* ANSI memory controls */\r
+\r
+#include "../ff.h"\r
+\r
+\r
+#if _FS_REENTRANT\r
+/*------------------------------------------------------------------------*/\r
+/* Create a Synchronization Object\r
+/*------------------------------------------------------------------------*/\r
+/* This function is called by f_mount() function to create a new\r
+/  synchronization object, such as semaphore and mutex. When a 0 is\r
+/  returned, the f_mount() function fails with FR_INT_ERR.\r
+*/\r
+\r
+int ff_cre_syncobj (   /* 1:Function succeeded, 0:Could not create due to any error */\r
+       BYTE vol,                       /* Corresponding logical drive being processed */\r
+       _SYNC_t* sobj           /* Pointer to return the created sync object */\r
+)\r
+{\r
+       int ret;\r
+\r
+\r
+       *sobj = CreateMutex(NULL, FALSE, NULL);         /* Win32 */\r
+       ret = (int)(*sobj != INVALID_HANDLE_VALUE);\r
+\r
+//     *sobj = SyncObjects[vol];               /* uITRON (give a static created semaphore) */\r
+//     ret = 1;\r
+\r
+//     *sobj = OSMutexCreate(0, &err); /* uC/OS-II */\r
+//     ret = (int)(err == OS_NO_ERR);\r
+\r
+//  *sobj = xSemaphoreCreateMutex();   /* FreeRTOS */\r
+//     ret = (int)(*sobj != NULL);\r
+\r
+       return ret;\r
+}\r
+\r
+\r
+\r
+/*------------------------------------------------------------------------*/\r
+/* Delete a Synchronization Object                                        */\r
+/*------------------------------------------------------------------------*/\r
+/* This function is called in f_mount() function to delete a synchronization\r
+/  object that created with ff_cre_syncobj() function. When a 0 is\r
+/  returned, the f_mount() function fails with FR_INT_ERR.\r
+*/\r
+\r
+int ff_del_syncobj (   /* 1:Function succeeded, 0:Could not delete due to any error */\r
+       _SYNC_t sobj            /* Sync object tied to the logical drive to be deleted */\r
+)\r
+{\r
+       int ret;\r
+\r
+\r
+       ret = CloseHandle(sobj);        /* Win32 */\r
+\r
+//     ret = 1;                                        /* uITRON (nothing to do) */\r
+\r
+//     OSMutexDel(sobj, OS_DEL_ALWAYS, &err);  /* uC/OS-II */\r
+//     ret = (int)(err == OS_NO_ERR);\r
+\r
+//  xSemaphoreDelete(sobj);            /* FreeRTOS */\r
+//     ret = 1;\r
+\r
+       return ret;\r
+}\r
+\r
+\r
+\r
+/*------------------------------------------------------------------------*/\r
+/* Request Grant to Access the Volume                                     */\r
+/*------------------------------------------------------------------------*/\r
+/* This function is called on entering file functions to lock the volume.\r
+/  When a FALSE is returned, the file function fails with FR_TIMEOUT.\r
+*/\r
+\r
+int ff_req_grant (     /* TRUE:Got a grant to access the volume, FALSE:Could not get a grant */\r
+       _SYNC_t sobj    /* Sync object to wait */\r
+)\r
+{\r
+       int ret;\r
+\r
+       ret = (int)(WaitForSingleObject(sobj, _FS_TIMEOUT) == WAIT_OBJECT_0);   /* Win32 */\r
+\r
+//     ret = (int)(wai_sem(sobj) == E_OK);                     /* uITRON */\r
+\r
+//     OSMutexPend(sobj, _FS_TIMEOUT, &err));          /* uC/OS-II */\r
+//     ret = (int)(err == OS_NO_ERR);\r
+\r
+//     ret = (int)(xSemaphoreTake(sobj, _FS_TIMEOUT) == pdTRUE);       /* FreeRTOS */\r
+\r
+       return ret;\r
+}\r
+\r
+\r
+\r
+/*------------------------------------------------------------------------*/\r
+/* Release Grant to Access the Volume                                     */\r
+/*------------------------------------------------------------------------*/\r
+/* This function is called on leaving file functions to unlock the volume.\r
+*/\r
+\r
+void ff_rel_grant (\r
+       _SYNC_t sobj    /* Sync object to be signaled */\r
+)\r
+{\r
+       ReleaseMutex(sobj);             /* Win32 */\r
+\r
+//     sig_sem(sobj);                  /* uITRON */\r
+\r
+//     OSMutexPost(sobj);              /* uC/OS-II */\r
+\r
+//     xSemaphoreGive(sobj);   /* FreeRTOS */\r
+}\r
+\r
+#endif\r
+\r
+\r
+\r
+\r
+#if _USE_LFN == 3      /* LFN with a working buffer on the heap */\r
+/*------------------------------------------------------------------------*/\r
+/* Allocate a memory block                                                */\r
+/*------------------------------------------------------------------------*/\r
+/* If a NULL is returned, the file function fails with FR_NOT_ENOUGH_CORE.\r
+*/\r
+\r
+void* ff_memalloc (    /* Returns pointer to the allocated memory block */\r
+       UINT msize              /* Number of bytes to allocate */\r
+)\r
+{\r
+       return malloc(msize);\r
+}\r
+\r
+\r
+/*------------------------------------------------------------------------*/\r
+/* Free a memory block                                                    */\r
+/*------------------------------------------------------------------------*/\r
+\r
+void ff_memfree (\r
+       void* mblock    /* Pointer to the memory block to free */\r
+)\r
+{\r
+       free(mblock);\r
+}\r
+\r
+#endif\r