Changeset 614 for soft/giet_vm/giet_libs/stdio.c

Timestamp:

Jul 15, 2015, 6:15:52 PM (9 years ago)

Author:

bellefin

Message:

Change the syscalls related to the NIC and the CMA
1) In a CHBUF, every buffer is linked to a variable called “status” which is equal to 1 if the buffer is full or 0 if it is empty. The status occupies 64 bytes to simplify cache coherence
2) The CHBUF descriptor now contains the physical addresses of the buffer and its status. It only occupies 64 bits.

File:

• soft/giet_vm/giet_libs/stdio.c (modified) (1 diff)

soft/giet_vm/giet_libs/stdio.c

@@ -698 +698 @@
 
 ///////////////////////////////////////////
-void giet_fbf_cma_start( void *       buf0,
-                         void *       buf1,
-                         unsigned int length )
+void giet_fbf_cma_init_buf( void* buf0_vbase, 
+                            void* buf1_vbase,
+                            void* sts0_vaddr,
+                            void* sts1_vaddr )
+{
+    if ( sys_call( SYSCALL_FBF_CMA_INIT_BUF,
+                   (unsigned int)buf0_vbase, 
+                   (unsigned int)buf1_vbase,
+                   (unsigned int)sts0_vaddr, 
+                   (unsigned int)sts1_vaddr ) )   giet_exit("error in giet_fbf_cma_init_buf()");
+}
+
+///////////////////////////////////////////
+void giet_fbf_cma_start( unsigned int length )
 {
     if ( sys_call( SYSCALL_FBF_CMA_START,
-                   (unsigned int)buf0, 
-                   (unsigned int)buf1, 
-                   length,
-                   0 ) )   giet_exit("error in giet_fbf_cma_start()");
+                   length, 
+                   0, 0, 0 ) )   giet_exit("error in giet_fbf_cma_start()");
 }