bsps/powerpc: Move legacy IRQ support

This patch is a part of the BSP source reorganization.

Update #3285.

2 files changed, 0 insertions, 399 deletions

diff --git a/c/src/lib/libcpu/powerpc/Makefile.am b/c/src/lib/libcpu/powerpc/Makefile.am
index b0bb0735e5..a16c762edf 100644
--- a/c/src/lib/libcpu/powerpc/Makefile.am
+++ b/c/src/lib/libcpu/powerpc/Makefile.am
@@ -33,12 +33,6 @@ endif
 
 new_exceptions_exc_bspsupport_rel_CPPFLAGS = $(AM_CPPFLAGS)
 new_exceptions_exc_bspsupport_rel_LDFLAGS = $(RTEMS_RELLDFLAGS)
-
-noinst_PROGRAMS += new-exceptions/irq_bspsupport.rel
-
-new_exceptions_irq_bspsupport_rel_SOURCES = new-exceptions/bspsupport/irq.c
-new_exceptions_irq_bspsupport_rel_CPPFLAGS = $(AM_CPPFLAGS)
-new_exceptions_irq_bspsupport_rel_LDFLAGS = $(RTEMS_RELLDFLAGS)
 endif
 
 EXTRA_DIST += new-exceptions/bspsupport/README
diff --git a/c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/irq.c b/c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/irq.c
deleted file mode 100644
index 931a9c6074..0000000000
--- a/c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/irq.c
+++ /dev/null
@@ -1,393 +0,0 @@
-/*
- *
- *  This file contains the PIC-independent implementation of the functions described in irq.h
- *
- *  Copyright (C) 1998, 1999 valette@crf.canon.fr
- *
- *  The license and distribution terms for this file may be
- *  found in the file LICENSE in this distribution or at
- *  http://www.rtems.org/license/LICENSE.
- */
-
-#include <stdlib.h>
-
-#include <rtems.h>
-#include <stdlib.h>
-#include <rtems/bspIo.h> /* for printk */
-#include <libcpu/spr.h>
-#include <bsp/irq_supp.h>
-#include <bsp/vectors.h>
-
-/*
- * default handler connected on each irq after bsp initialization
- */
-static rtems_irq_connect_data	default_rtems_entry;
-
-/*
- * location used to store initial tables used for interrupt
- * management.
- */
-static rtems_irq_global_settings* 	internal_config;
-static rtems_irq_connect_data*		rtems_hdl_tbl;
-
-
-SPR_RW(BOOKE_TSR)
-SPR_RW(PPC405_TSR)
-
-/* legacy mode for bookE DEC exception;
- * to avoid the double layer of function calls
- * (dec_handler_bookE -> C_dispatch_irq_handler -> user handler)
- * it is preferrable for the user to hook the DEC
- * exception directly.
- * However, the legacy mode works with less modifications
- * of user code.
- */
-static int C_dispatch_dec_handler_bookE (BSP_Exception_frame *frame, unsigned int excNum)
-{
-	/* clear interrupt; we must do this
-	 * before C_dispatch_irq_handler()
-	 * re-enables MSR_EE.
-	 * Note that PPC405 uses a different SPR# for TSR
-	 */
-	if ( ppc_cpu_is_bookE()==PPC_BOOKE_405)
-		_write_PPC405_TSR( BOOKE_TSR_DIS );
-	else
-		_write_BOOKE_TSR( BOOKE_TSR_DIS );
-	return C_dispatch_irq_handler(frame, ASM_DEC_VECTOR);
-}
-
-/*
- * ------------------------ RTEMS Irq helper functions ----------------
- */
-
-/*
- * This function check that the value given for the irq line
- * is valid.
- */
-
-static int isValidInterrupt(int irq)
-{
-  if ( (irq < internal_config->irqBase) || (irq >= internal_config->irqBase + internal_config->irqNb))
-    return 0;
-  return 1;
-}
-
-/*
- * ------------------------ RTEMS Shared Irq Handler Mngt Routines ----------------
- */
-int BSP_install_rtems_shared_irq_handler  (const rtems_irq_connect_data* irq)
-{
-    rtems_interrupt_level   level;
-    rtems_irq_connect_data* vchain;
-
-    if (!isValidInterrupt(irq->name)) {
-      printk("Invalid interrupt vector %d\n",irq->name);
-      return 0;
-    }
-
-	/* pre-allocate memory outside of critical section */
-    vchain = (rtems_irq_connect_data*)malloc(sizeof(rtems_irq_connect_data));
-
-    rtems_interrupt_disable(level);
-
-    if ( (intptr_t)rtems_hdl_tbl[irq->name].next_handler  == -1 ) {
-      rtems_interrupt_enable(level);
-      printk("IRQ vector %d already connected to an unshared handler\n",irq->name);
-	  free(vchain);
-      return 0;
-    }
-
-    /* save off topmost handler */
-    vchain[0]= rtems_hdl_tbl[irq->name];
-
-    /*
-     * store the data provided by user
-     */
-    rtems_hdl_tbl[irq->name] = *irq;
-
-    /* link chain to new topmost handler */
-    rtems_hdl_tbl[irq->name].next_handler = (void *)vchain;
-
-	/*
-	 * enable_irq_at_pic is supposed to ignore
-	 * requests to disable interrupts outside
-	 * of the range handled by the PIC
-	 */
-	BSP_enable_irq_at_pic(irq->name);
-
-    /*
-     * Enable interrupt on device
-     */
-	if (irq->on)
-    	irq->on(irq);
-
-    rtems_interrupt_enable(level);
-
-    return 1;
-}
-
-/*
- * ------------------------ RTEMS Single Irq Handler Mngt Routines ----------------
- */
-
-int BSP_install_rtems_irq_handler  (const rtems_irq_connect_data* irq)
-{
-    rtems_interrupt_level  level;
-
-    if (!isValidInterrupt(irq->name)) {
-      printk("Invalid interrupt vector %d\n",irq->name);
-      return 0;
-    }
-    /*
-     * Check if default handler is actually connected. If not issue an error.
-     * You must first get the current handler via i386_get_current_idt_entry
-     * and then disconnect it using i386_delete_idt_entry.
-     * RATIONALE : to always have the same transition by forcing the user
-     * to get the previous handler before accepting to disconnect.
-     */
-    rtems_interrupt_disable(level);
-    if (rtems_hdl_tbl[irq->name].hdl != default_rtems_entry.hdl) {
-      rtems_interrupt_enable(level);
-      printk("IRQ vector %d already connected\n",irq->name);
-      return 0;
-    }
-
-    /*
-     * store the data provided by user
-     */
-    rtems_hdl_tbl[irq->name] = *irq;
-    rtems_hdl_tbl[irq->name].next_handler = (void *)-1;
-
-	/*
-	 * enable_irq_at_pic is supposed to ignore
-	 * requests to disable interrupts outside
-	 * of the range handled by the PIC
-	 */
-	BSP_enable_irq_at_pic(irq->name);
-
-    /*
-     * Enable interrupt on device
-     */
-	if (irq->on)
-    	irq->on(irq);
-
-    rtems_interrupt_enable(level);
-
-    return 1;
-}
-
-int BSP_get_current_rtems_irq_handler	(rtems_irq_connect_data* irq)
-{
-    rtems_interrupt_level       level;
-
-    if (!isValidInterrupt(irq->name)) {
-      return 0;
-    }
-    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)
-{
-    rtems_irq_connect_data *pchain= NULL, *vchain = NULL;
-    rtems_interrupt_level   level;
-
-    if (!isValidInterrupt(irq->name)) {
-      return 0;
-    }
-    /*
-     * Check if default handler is actually connected. If not issue an error.
-     * You must first get the current handler via i386_get_current_idt_entry
-     * and then disconnect it using i386_delete_idt_entry.
-     * RATIONALE : to always have the same transition by forcing the user
-     * to get the previous handler before accepting to disconnect.
-     */
-    rtems_interrupt_disable(level);
-    if (rtems_hdl_tbl[irq->name].hdl != irq->hdl) {
-      rtems_interrupt_enable(level);
-      return 0;
-    }
-
-    if( (intptr_t)rtems_hdl_tbl[irq->name].next_handler != -1 )
-    {
-       int found = 0;
-
-       for( (pchain= NULL, vchain = &rtems_hdl_tbl[irq->name]);
-            (vchain->hdl != default_rtems_entry.hdl);
-            (pchain= vchain, vchain = (rtems_irq_connect_data*)vchain->next_handler) )
-       {
-          if( vchain->hdl == irq->hdl )
-          {
-             found= -1; break;
-          }
-       }
-
-       if( !found )
-       {
-          rtems_interrupt_enable(level);
-          return 0;
-       }
-    }
-    else
-	{
-		if (rtems_hdl_tbl[irq->name].hdl != irq->hdl)
-		{
-			rtems_interrupt_enable(level);
-			return 0;
-		}
-	}
-
-    /*
-     * Disable interrupt on device
-     */
-	if (irq->off)
-    	irq->off(irq);
-
-    /*
-     * restore the default irq value
-     */
-    if( !vchain )
-    {
-       /* single handler vector... */
-       rtems_hdl_tbl[irq->name] = default_rtems_entry;
-    }
-    else
-    {
-       if( pchain )
-       {
-          /* non-first handler being removed */
-          pchain->next_handler = vchain->next_handler;
-       }
-       else
-       {
-          /* first handler isn't malloc'ed, so just overwrite it.  Since
-          the contents of vchain are being struct copied, vchain itself
-          goes away */
-          vchain = vchain->next_handler;
-          rtems_hdl_tbl[irq->name]= *vchain;
-       }
-    }
-
-	/* Only disable at PIC if we removed the last handler */
-	if ( rtems_hdl_tbl[irq->name].hdl == default_rtems_entry.hdl ) {
-		/*
-		 * disable_irq_at_pic is supposed to ignore
-		 * requests to disable interrupts outside
-		 * of the range handled by the PIC;
-		 */
-		BSP_disable_irq_at_pic(irq->name);
-	}
-
-    rtems_interrupt_enable(level);
-
-    free(vchain);
-
-    return 1;
-}
-
-/*
- * Less cumbersome, alternate entry points;
- * RETURNS: more traditional, 0 on success, nonzero on error
- */
-
-static int doit(
-	int (*p)(const rtems_irq_connect_data*),
-	rtems_irq_number n,
-	rtems_irq_hdl hdl,
-	rtems_irq_hdl_param prm)
-{
-rtems_irq_connect_data 	xx;
-	xx.name   = n;
-	xx.hdl    = hdl;
-	xx.handle = prm;
-	xx.on     = 0;
-	xx.off    = 0;
-	xx.isOn   = 0;
-	return ! p(&xx);
-}
-
-int BSP_rtems_int_connect(rtems_irq_number n, rtems_irq_hdl hdl, rtems_irq_hdl_param p)
-{
-	return doit(BSP_install_rtems_shared_irq_handler, n, hdl, p);
-}
-
-int BSP_rtems_int_disconnect(rtems_irq_number n, rtems_irq_hdl hdl, rtems_irq_hdl_param p)
-{
-	return doit(BSP_remove_rtems_irq_handler, n, hdl, p);
-}
-
-
-/*
- * RTEMS Global Interrupt Handler Management Routines
- */
-
-int BSP_rtems_irq_mngt_set(rtems_irq_global_settings* config)
-{
-    int                           i;
-    rtems_interrupt_level         level;
-    rtems_irq_connect_data*       vchain;
-
-    /*
-     * Store various code accelerators
-     */
-    internal_config 		= config;
-    default_rtems_entry 	= config->defaultEntry;
-    rtems_hdl_tbl 		= config->irqHdlTbl;
-
-    rtems_interrupt_disable(level);
-
-	if ( !BSP_setup_the_pic(config) ) {
-		printk("PIC setup failed; leaving IRQs OFF\n");
-		return 0;
-	}
-
-	for ( i = config->irqBase; i < config->irqBase + config->irqNb; i++ ) {
-		for( vchain = &rtems_hdl_tbl[i];
-		     ((intptr_t)vchain != -1 && vchain->hdl != default_rtems_entry.hdl);
-		     vchain = (rtems_irq_connect_data*)vchain->next_handler )
-		{
-			if (vchain->on)
-              vchain->on(vchain);
-		}
-		if ( vchain != &rtems_hdl_tbl[i] ) {
-			/* at least one handler registered */
-			BSP_enable_irq_at_pic(i);
-		} else {
-/* Do NOT disable; there might be boards with cascaded
- * interrupt controllers where the BSP (incorrectly) does
- * not ignore the cascaded interrupts in BSP_disable_irq_at_pic()!
- * Instead, we rely on BSP_setup_the_pic() for a good
- * initial configuration.
- *
-			BSP_disable_irq_at_pic(i);
- */
-		}
-	}
-
-    rtems_interrupt_enable(level);
-
-	{
-			ppc_exc_set_handler(ASM_EXT_VECTOR, C_dispatch_irq_handler);
-
-			if ( ppc_cpu_is_bookE() ) {
-				/* bookE decrementer interrupt needs to be cleared BEFORE
-				 * dispatching the user ISR (because the user ISR is called
-				 * with EE enabled)
-				 * We do this so that existing DEC handlers can be used
-				 * with minor modifications.
-				 */
-				ppc_exc_set_handler(ASM_BOOKE_DEC_VECTOR, C_dispatch_dec_handler_bookE);
-			} else {
-				ppc_exc_set_handler(ASM_DEC_VECTOR, C_dispatch_irq_handler);
-			}
-	}
-    return 1;
-}
-
-int BSP_rtems_irq_mngt_get(rtems_irq_global_settings** config)
-{
-    *config = internal_config;
-    return 0;
-}