Changeset 440 for trunk/kernel/devices/dev_fbf.c

Timestamp:

May 3, 2018, 5:51:22 PM (6 years ago)

Author:

alain

Message:

1/ Fix a bug in the Multithreaded "sort" applicationr:
The pthread_create() arguments must be declared as global variables.
2/ The exit syscall can be called by any thread of a process..

File:

• trunk/kernel/devices/dev_fbf.c (modified) (3 diffs)

trunk/kernel/devices/dev_fbf.c

@@ -119 +119 @@
 //////////////////////////////////////////////////////////////////////////////////
 // This static function is called by dev_fbf_read() & dev_fbf_write() functions.
-// It builds and registers the command in the calling thread descriptor, after
-// translation of buffer virtual address to physical address. 
-// Then, it registers the calling thead in the relevant DMA chdev waiting queue.
+// It builds and registers the command in the calling thread descriptor. 
+// Then, it registers the calling thread in the relevant DMA chdev waiting queue.
 // Finally it blocks on the THREAD_BLOCKED_DEV condition and deschedule.
 ////////////////////////////////////i/////////////////////////////////////////////
@@ -129 +128 @@
                                uint32_t  offset )
 {
-    error_t     error;
-    paddr_t     buf_paddr;
-
-    thread_t * this = CURRENT_THREAD;              // pointer on client thread
-
-    // Get buffer physical address
-    error = vmm_v2p_translate( CONFIG_KERNEL_IDENTITY_MAP , buffer , &buf_paddr );
- 
-    // check buffer is mapped
-    assert( (error == 0) , __FUNCTION__ ,
-    "cannot translate vaddr = %p in process %x\n", buffer, this->process->pid ); 
 
     // get extended pointer on FBF chdev descriptor
@@ -160 +148 @@
 
     // compute extended pointers on frame buffer and memory buffer
-    xptr_t  mem_buf_xp = XPTR( local_cxy , (void *)(intptr_t)buf_paddr );
+    xptr_t  mem_buf_xp = XPTR( local_cxy , buffer );
     xptr_t  fbf_buf_xp = base + offset;