1 files changed, 44 insertions, 91 deletions

diff --git a/c/src/lib/libcpu/arm/lpc22xx/irq/irq.c b/c/src/lib/libcpu/arm/lpc22xx/irq/irq.c
index dfc97f9135..2c5f392cb7 100644
--- a/c/src/lib/libcpu/arm/lpc22xx/irq/irq.c
+++ b/c/src/lib/libcpu/arm/lpc22xx/irq/irq.c
@@ -1,6 +1,8 @@
 /*
  * Philps LPC22XX Interrupt handler
  *
+ * Copyright (c) 2010 embedded brains GmbH.
+ *
  * Copyright (c)  2006 by Ray<rayx.cn@gmail.com>  to support LPC ARM
  *  The license and distribution terms for this file may be
  *  found in the file LICENSE in this distribution or at
@@ -9,117 +11,68 @@
  *
  *  $Id$
  */
+
 #include <bsp.h>
-#include <irq.h>
-#include <rtems/score/thread.h>
-#include <rtems/score/apiext.h>
+#include <bsp/irq.h>
+#include <bsp/irq-generic.h>
+
 #include <lpc22xx.h>
 
-/*
- * This function check that the value given for the irq line
- * is valid.
- */
-static int isValidInterrupt(int irq)
+void bsp_interrupt_dispatch(void)
 {
-  if ( (irq < 0) || (irq >= BSP_MAX_INT))
-    return 0;
-  return 1;
+  rtems_vector_number vector = 31 - __builtin_clz(VICIRQStatus);
+
+  bsp_interrupt_handler_dispatch(vector);
+
+  VICVectAddr = 0;
 }
 
-/*
- * Installs the interrupt handler.
- *
- * You should only have to add the code to unmask the interrupt.
- *
- */
-int BSP_install_rtems_irq_handler  (const rtems_irq_connect_data* irq)
+rtems_status_code bsp_interrupt_vector_enable(rtems_vector_number vector)
 {
-    rtems_interrupt_level level;
-    rtems_irq_hdl        *bsp_tbl;
-    int                  *vic_cntl;
+  VICIntEnable |= 1 << vector;
 
-    bsp_tbl = (rtems_irq_hdl *)VICVectAddrBase;
+  return RTEMS_SUCCESSFUL;
+}
 
-    vic_cntl=(int *)VICVectCntlBase;
+rtems_status_code bsp_interrupt_vector_disable(rtems_vector_number vector)
+{
+  VICIntEnClr = 1 << vector;
 
-    if (!isValidInterrupt(irq->name)) {
-      return 0;
-    }
+  return RTEMS_SUCCESSFUL;
+}
 
-    /*
-     * Check if default handler is actually connected. If not issue an error.
-     */
+rtems_status_code bsp_interrupt_facility_initialize(void)
+{
+  volatile uint32_t *ctrl = (volatile uint32_t *) VICVectCntlBase;
+  size_t i = 0;
 
-    if (bsp_tbl[irq->name] != default_int_handler) {
-      return 0;
-    }
+  /* Disable all interrupts */
+  VICIntEnClr = 0xffffffff;
 
-    rtems_interrupt_disable(level);
+  /* Use IRQ category */
+  VICIntSelect = 0;
 
-    /*
-     * store the new handler
-     */
-    bsp_tbl[irq->name] = irq->hdl;
-    /* *(volatile unsigned long*)(VICVectAddr0+(irq->name * 4)&0x7c )= (uint32_t) irq->hdl;*/
-    /*
-     * Enable interrupt on device
-     */
-    vic_cntl[irq->name] = 0x20 | irq->name;
+  /* Enable access in USER mode */
+  VICProtection = 0;
 
-    VICIntEnable |= 1 << irq->name;
+  for (i = 0; i < 16; ++i) {
+    /* Disable vector mode */
+    ctrl [i] = 0;
 
-    if(irq->on)
-    {
-    	irq->on(irq);
-    }
+    /* Acknowledge interrupts for all priorities */
+    VICVectAddr = 0;
+  }
 
+  /* Acknowledge interrupts for all priorities */
+  VICVectAddr = 0;
 
-    rtems_interrupt_enable(level);
+  /* Install the IRQ exception handler */
+  _CPU_ISR_install_vector(ARM_EXCEPTION_IRQ, arm_exc_interrupt, NULL);
 
-    return 1;
+  return RTEMS_SUCCESSFUL;
 }
 
-/*
- * Remove and interrupt handler
- *
- * You should only have to add the code to mask the interrupt.
- *
- */
-int BSP_remove_rtems_irq_handler  (const rtems_irq_connect_data* irq)
+void bsp_interrupt_handler_default(rtems_vector_number vector)
 {
-    rtems_interrupt_level level;
-    rtems_irq_hdl        *bsp_tbl;
-
-    bsp_tbl = (rtems_irq_hdl *)&VICVectAddr0;
-
-    if (!isValidInterrupt(irq->name)) {
-      return 0;
-    }
-    /*
-     * Check if the handler is actually connected. If not issue an error.
-     */
-    if (bsp_tbl[irq->name] != irq->hdl) {
-      return 0;
-    }
-
-    rtems_interrupt_disable(level);
-
-    VICIntEnClr = 1 << irq->name;
-
-    /*
-     * Disable interrupt on device
-     */
-    if(irq->off) {
-        irq->off(irq);
-    }
-    /*
-     * restore the default irq value
-     */
-    bsp_tbl[irq->name] = default_int_handler;
-
-    rtems_interrupt_enable(level);
-
-    return 1;
+  printk("spurious interrupt: %u\n", vector);
 }
-
-