Changeset 218 for soft/giet_vm/libs/stdio.c

Timestamp:

Sep 19, 2012, 10:52:43 AM (12 years ago)

Author:

alain

Message:

Introducing support for Network controller

File:

• soft/giet_vm/libs/stdio.c (modified) (4 diffs)

soft/giet_vm/libs/stdio.c

@@ -33 +33 @@
 #define SYSCALL_IOC_COMPLETED   0x17
 #define SYSCALL_VOBJ_GET_VBASE  0x1A
+#define SYSCALL_NIC_WRITE       0x1B
+#define SYSCALL_NIC_READ        0x1C
+#define SYSCALL_NIC_COMPLETED   0x1D
 
 //////////////////////////////////////////////////////////////////////////////////
@@ -645 +648 @@
 //////////////////////////////////////////////////////////////////////////////////
 unsigned int giet_fb_write( unsigned int        offset, 
-                            void*                       buffer, 
+                            void*               buffer, 
                             unsigned int        length )
 {
@@ -667 +670 @@
 //////////////////////////////////////////////////////////////////////////////////
 unsigned int giet_fb_read( unsigned int         offset, 
-                           void*                        buffer, 
+                           void*                buffer, 
                            unsigned int         length )
 {
@@ -685 +688 @@
 {
     return sys_call(SYSCALL_FB_COMPLETED,
+                    0, 0, 0, 0);
+}
+
+//////////////////////////////////////////////////////////////////////////////////
+// giet_nic_write()
+//////////////////////////////////////////////////////////////////////////////////
+// This non-blocking function use the DMA coprocessor to transfer data from the
+// NIC device to an user buffer.
+// - offset : offset (in bytes) in the NIC
+// - buffer : base address of the memory buffer
+// - length : number of bytes to be transfered
+// The transfer completion is signaled by an IRQ, and must be tested by the
+// nic_completed() function.
+// - Returns 0 if success, > 0 if error (e.g. memory buffer not in user space).
+//////////////////////////////////////////////////////////////////////////////////
+
+unsigned int giet_nic_write( unsigned int       offset, 
+                             void*              buffer, 
+                             unsigned int       length )
+{
+    return sys_call(SYSCALL_NIC_WRITE,
+            offset,
+            (unsigned int)buffer,
+            length,
+            0);
+}
+
+//////////////////////////////////////////////////////////////////////////////////
+// giet_nic_read()
+//////////////////////////////////////////////////////////////////////////////////
+// This non-blocking function use the DMA coprocessor to transfer data from the
+// NIC device to an user buffer.
+// - offset : offset (in bytes) in the NIC
+// - buffer : base address of the memory buffer
+// - length : number of bytes to be transfered
+// The transfer completion is signaled by an IRQ, and must be tested by the
+// nic_completed() function.
+// - Returns 0 if success, > 0 if error (e.g. memory buffer not in user space).
+//////////////////////////////////////////////////////////////////////////////////
+
+unsigned int giet_nic_read( unsigned int        offset, 
+                            void*                   buffer, 
+                            unsigned int        length )
+{
+    return sys_call(SYSCALL_NIC_READ,
+            offset,
+            (unsigned int)buffer,
+            length,
+            0);
+}
+
+//////////////////////////////////////////////////////////////////////////////////
+// giet_nic_completed()
+//////////////////////////////////////////////////////////////////////////////////
+// This blocking function returns when the transfer is completed.
+// - Returns 0 if success, > 0 if error.
+//////////////////////////////////////////////////////////////////////////////////
+unsigned int giet_nic_completed()
+{
+    return sys_call(SYSCALL_NIC_COMPLETED,
                     0, 0, 0, 0);
 }