Changeset 237 for soft/giet_vm/libs

Timestamp:

May 2, 2013, 6:38:04 PM (12 years ago)

Author:

meunier

Message:

Adding a syscall to allow a user to know the block size with which the block device has been configured.

Location:

soft/giet_vm/libs

Files:

• stdio.c (modified) (2 diffs)
• stdio.h (modified) (1 diff)

soft/giet_vm/libs/stdio.c

@@ -35 +35 @@
 #define SYSCALL_IOC_READ        0x16
 #define SYSCALL_IOC_COMPLETED   0x17
+#define SYSCALL_IOC_BLOCK_SIZE  0x18
 #define SYSCALL_VOBJ_GET_VBASE  0x1A
 #define SYSCALL_NIC_WRITE       0x1B
@@ -548 +549 @@
 
 
+//////////////////////////////////////////////////////////////////////////////////
+// giet_ioc_block_size()
+//////////////////////////////////////////////////////////////////////////////////
+// This blocking function returns the block_size (in bytes) of the block device
+//////////////////////////////////////////////////////////////////////////////////
+unsigned int giet_ioc_block_size() {
+    return sys_call(SYSCALL_IOC_BLOCK_SIZE, 0, 0, 0, 0);
+}
+
+
 /////  Frame buffer device related system calls  /////
 

soft/giet_vm/libs/stdio.h

@@ -34 +34 @@
 unsigned int giet_ioc_write(unsigned int lba, void * buffer, unsigned int count);
 unsigned int giet_ioc_completed();
+unsigned int giet_ioc_block_size();
 
 /* Frame buffer device related functions */