2007-09-12 Joel Sherrill <joel.sherrill@OARcorp.com>

	PR 1257/bsps
	* shared/irq/idt.c, shared/irq/irq.c, shared/irq/irq_init.c: Code
	outside of cpukit should use the public API for
	rtems_interrupt_disable/rtems_interrupt_enable. By bypassing the
	public API and directly accessing _CPU_ISR_Disable and
	_CPU_ISR_Enable, they were bypassing the compiler memory barrier
	directive which could lead to problems. This patch also changes the
	type of the variable passed into these routines and addresses minor
	style issues.

1 files changed, 31 insertions, 30 deletions

diff --git a/c/src/lib/libbsp/i386/shared/irq/irq.c b/c/src/lib/libbsp/i386/shared/irq/irq.c
index a8d57442f9..78fdcfcaf5 100644
--- a/c/src/lib/libbsp/i386/shared/irq/irq.c
+++ b/c/src/lib/libbsp/i386/shared/irq/irq.c
@@ -56,15 +56,15 @@ rtems_i8259_masks i8259s_cache = 0xFFFB;
 +--------------------------------------------------------------------------*/
 int BSP_irq_disable_at_i8259s    (const rtems_irq_number irqLine)
 {
-  unsigned short mask;
-  unsigned int 	level;
+  unsigned short        mask;
+  rtems_interrupt_level level;
 
   if ( ((int)irqLine < BSP_LOWEST_OFFSET) ||
        ((int)irqLine > BSP_MAX_OFFSET )
        )
     return 1;
 
-  _CPU_ISR_Disable(level);
+  rtems_interrupt_disable(level);
 
   mask = 1 << irqLine;
   i8259s_cache |= mask;
@@ -77,7 +77,7 @@ int BSP_irq_disable_at_i8259s    (const rtems_irq_number irqLine)
   {
     outport_byte(PIC_SLAVE_IMR_IO_PORT, ((i8259s_cache & 0xff00) >> 8));
   }
-  _CPU_ISR_Enable (level);
+  rtems_interrupt_enable(level);
 
   return 0;
 }
@@ -91,15 +91,15 @@ int BSP_irq_disable_at_i8259s    (const rtems_irq_number irqLine)
 +--------------------------------------------------------------------------*/
 int BSP_irq_enable_at_i8259s    (const rtems_irq_number irqLine)
 {
-  unsigned short mask;
-  unsigned int 	level;
+  unsigned short        mask;
+  rtems_interrupt_level level;
 
   if ( ((int)irqLine < BSP_LOWEST_OFFSET) ||
        ((int)irqLine > BSP_MAX_OFFSET )
        )
     return 1;
 
-  _CPU_ISR_Disable(level);
+  rtems_interrupt_disable(level);
 
   mask = ~(1 << irqLine);
   i8259s_cache &= mask;
@@ -112,7 +112,7 @@ int BSP_irq_enable_at_i8259s    (const rtems_irq_number irqLine)
   {
     outport_byte(PIC_SLAVE_IMR_IO_PORT, ((i8259s_cache & 0xff00) >> 8));
   }
-  _CPU_ISR_Enable (level);
+  rtems_interrupt_enable(level);
 
   return 0;
 } /* mask_irq */
@@ -200,7 +200,7 @@ static int isValidInterrupt(int irq)
 
 int BSP_install_rtems_irq_handler  (const rtems_irq_connect_data* irq)
 {
-    unsigned int level;
+    rtems_interrupt_level       level;
 
     if (!isValidInterrupt(irq->name)) {
       return 0;
@@ -212,9 +212,9 @@ int BSP_install_rtems_irq_handler  (const rtems_irq_connect_data* irq)
      * RATIONALE : to always have the same transition by forcing the user
      * to get the previous handler before accepting to disconnect.
      */
-    _CPU_ISR_Disable(level);
+    rtems_interrupt_disable(level);
     if (rtems_hdl_tbl[irq->name].hdl != default_rtems_entry.hdl) {
-	  _CPU_ISR_Enable(level);
+	  rtems_interrupt_enable(level);
       return 0;
     }
 
@@ -231,27 +231,27 @@ int BSP_install_rtems_irq_handler  (const rtems_irq_connect_data* irq)
      */
     irq->on(irq);
 
-    _CPU_ISR_Enable(level);
+    rtems_interrupt_enable(level);
 
     return 1;
 }
 
 int BSP_get_current_rtems_irq_handler	(rtems_irq_connect_data* irq)
 {
-     unsigned int level;
+    rtems_interrupt_level       level;
 
-     if (!isValidInterrupt(irq->name)) {
+    if (!isValidInterrupt(irq->name)) {
       return 0;
-     }
-    _CPU_ISR_Disable(level);
-     *irq = rtems_hdl_tbl[irq->name];
-    _CPU_ISR_Enable(level);
-     return 1;
+    }
+    rtems_interrupt_disable(level);
+      *irq = rtems_hdl_tbl[irq->name];
+    rtems_interrupt_enable(level);
+    return 1;
 }
 
 int BSP_remove_rtems_irq_handler  (const rtems_irq_connect_data* irq)
 {
-    unsigned int level;
+    rtems_interrupt_level       level;
 
     if (!isValidInterrupt(irq->name)) {
       return 0;
@@ -263,9 +263,9 @@ int BSP_remove_rtems_irq_handler  (const rtems_irq_connect_data* irq)
      * RATIONALE : to always have the same transition by forcing the user
      * to get the previous handler before accepting to disconnect.
      */
-    _CPU_ISR_Disable(level);
+    rtems_interrupt_disable(level);
     if (rtems_hdl_tbl[irq->name].hdl != irq->hdl) {
-      _CPU_ISR_Enable(level);
+      rtems_interrupt_enable(level);
       return 0;
     }
 
@@ -284,7 +284,7 @@ int BSP_remove_rtems_irq_handler  (const rtems_irq_connect_data* irq)
      */
     rtems_hdl_tbl[irq->name] = default_rtems_entry;
 
-    _CPU_ISR_Enable(level);
+    rtems_interrupt_enable(level);
 
     return 1;
 }
@@ -295,16 +295,17 @@ int BSP_remove_rtems_irq_handler  (const rtems_irq_connect_data* irq)
 
 int BSP_rtems_irq_mngt_set(rtems_irq_global_settings* config)
 {
-    int i;
-    unsigned int level;
-   /*
-    * Store various code accelerators
-    */
+    int                    i;
+    rtems_interrupt_level  level;
+
+    /*
+     * Store various code accelerators
+     */
     internal_config 		= config;
     default_rtems_entry 	= config->defaultEntry;
     rtems_hdl_tbl 		= config->irqHdlTbl;
 
-    _CPU_ISR_Disable(level);
+    rtems_interrupt_disable(level);
     /*
      * set up internal tables used by rtems interrupt prologue
      */
@@ -324,7 +325,7 @@ int BSP_rtems_irq_mngt_set(rtems_irq_global_settings* config)
      * must enable slave pic anyway
      */
     BSP_irq_enable_at_i8259s (2);
-    _CPU_ISR_Enable(level);
+    rtems_interrupt_enable(level);
     return 1;
 }