Changes between Version 3 and Version 4 of kernel_fat32

Timestamp:

Mar 28, 2015, 2:50:08 PM (9 years ago)

Author:

alain

Comment:

--

kernel_fat32

@@ -50 +50 @@
 Return the file size (bytes) for a file identified by the fd_id. 
 
-=== 6) int '''fat_close'''( unsigned int  fd_id ) ===
+=== 6) int '''_fat_close'''( unsigned int  fd_id ) ===
 This function removes a file identified by the fd_id from the set of open files.
 
 === 7) int '''_fat_ioc_access'''( unsigned int use_irq  ,  unsigned int to_mem  ,  unsigned int lba  , unsigned int  buf_vaddr  ,  unsigned int count ) ===
-All the previous functions uses this function to access the block device. It computes the buffer physical address, and call the proper block device driver, as specified in the mapping.
+This function is acting as a generic block device driver: all the previous functions use this last function to access the available block device, depending on the USE_IOC_BDV / USE_IOC_HBA / USE_IOC_SDC / USE_IOC_RDK flags defined in the ''hard_config.h'' file. It computes the buffer physical address, and check access rights.
  * '''use_irq''' : Boolean => request to use the descheduling mode when non zero.
  * '''to_mem''' : Boolean => to memory transfer when non zero.