arc: remove deprecated dynamic interrupt implementation

Change-Id: I7a81123f72458f43d3e8e1ca04a921ae6c5f1f6e
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>

arch/arc/Kconfig

@@ -231,19 +231,6 @@ config SW_ISR_TABLE
 	  a parameter to be passed to the interrupt handlers. Also, invoking
 	  the exeception/interrupt exit stub is automatically done.
 
-	  This has to be enabled for dynamically connecting interrupt handlers
-	  at runtime (SW_ISR_TABLE_DYNAMIC).
-
-config SW_ISR_TABLE_DYNAMIC
-	bool
-	prompt "Allow installing interrupt handlers at runtime"
-	depends on SW_ISR_TABLE
-	default n
-	help
-	  This option enables irq_connect_dynamic(). It moves the ISR table to
-	  SRAM so that it is writable. This has the side-effect of removing
-	  write-protection on the ISR table.
-
 config IRQ_VECTOR_TABLE_CUSTOM
 	bool
 	prompt "Projects provide a custom static IRQ part of vector table"

arch/arc/core/irq_manage.c

@@ -22,9 +22,6 @@
  * Interrupt management:
  *
  * - enabling/disabling
- * - dynamic ISR connecting/replacing
- *
- * SW_ISR_TABLE_DYNAMIC has to be enabled for connecting ISRs at runtime.
  *
  * An IRQ number passed to the @a irq parameters found in this file is a
  * number from 16 to last IRQ number on the platform.
@@ -117,75 +114,3 @@ void _irq_spurious(void *unused)
 		;
 }
 
-#if CONFIG_SW_ISR_TABLE_DYNAMIC
-/*
- * @internal
- *
- * @brief Replace an interrupt handler by another
- *
- * An interrupt's ISR can be replaced at runtime.
- *
- * @return N/A
- */
-
-void _irq_handler_set(
-	unsigned int irq,
-	void (*new)(void *arg),
-	void *arg
-)
-{
-	int key = irq_lock();
-	int index = irq - 16;
-
-	__ASSERT(irq < CONFIG_NUM_IRQS, "IRQ number too high");
-	_sw_isr_table[index].isr = new;
-	_sw_isr_table[index].arg = arg;
-
-	irq_unlock(key);
-}
-
-/*
- * @brief Connect an ISR to an interrupt line
- *
- * @a isr is connected to interrupt line @a irq, a number greater than or equal
- * 16. No prior ISR can have been connected on @a irq interrupt line since the
- * system booted.
- *
- * This routine will hang if another ISR was connected for interrupt line @a irq
- * and ASSERT_ON is enabled; if ASSERT_ON is disabled, it will fail silently.
- *
- * @return the interrupt line number
- */
-
-int _arch_irq_connect_dynamic(
-	unsigned int irq,
-	unsigned int prio,
-	void (*isr)(void *arg),
-	void *arg,
-	uint32_t flags
-)
-{
-	ARG_UNUSED(flags);
-	_irq_handler_set(irq, isr, arg);
-	_irq_priority_set(irq, prio);
-	return irq;
-}
-
-/*
- * @internal
- *
- * @brief Disconnect an ISR from an interrupt line
- *
- * Interrupt line @a irq is disconnected from its ISR and the latter is
- * replaced by _irq_spurious(). irq_disable() should have been called before
- * invoking this routine.
- *
- * @return N/A
- */
-
-void _irq_disconnect(unsigned int irq)
-{
-	_irq_handler_set(irq, _irq_spurious, NULL);
-}
-
-#endif /* CONFIG_SW_ISR_TABLE_DYNAMIC */

include/arch/arc/v2/irq.h

@@ -39,11 +39,6 @@ GTEXT(_arch_irq_connect)
 GTEXT(_arch_irq_enable)
 GTEXT(_arch_irq_disable)
 #else
-extern int _arch_irq_connect_dynamic(unsigned int irq,
-			     unsigned int prio,
-			     void (*isr)(void *arg),
-			     void *arg,
-			     uint32_t flags);
 
 extern void _arch_irq_enable(unsigned int irq);
 extern void _arch_irq_disable(unsigned int irq);

include/arch/arc/v2/linker.ld

@@ -89,7 +89,6 @@ SECTIONS {
 		*(.version_header)
 		KEEP(*(".version_header*"))
 #endif
-#ifndef CONFIG_SW_ISR_TABLE_DYNAMIC
 		KEEP(*(.isr_irq*))
 
 		/*
@@ -108,7 +107,6 @@ SECTIONS {
 		KEEP(*(SORT(.gnu.linkonce.isr_irq[2-9][0-9])))
 		/* sections for IRQ100-999 */
 		KEEP(*(SORT(.gnu.linkonce.isr_irq[1-9][0-9][0-9])))
-#endif
 
 		*(.text)
 		*(".text.*")
@@ -193,21 +191,6 @@ SECTIONS {
 		*(.data)
 		*(".data.*")
 
-#if CONFIG_SW_ISR_TABLE_DYNAMIC
-		KEEP(*(.isr_irq*))
-
-		/*The following sections maps the location of the different rows for
-		the _sw_isr_table. Each row maps to an IRQ entry (handler, argument).*/
-		/*In ARC architecture, IRQ 0-15 are reserved for the system and are not
-		assignable by the user, for that reason the linker sections start
-		on IRQ 16*/
-		/* sections for IRQ16-19 */
-		KEEP(*(SORT(.gnu.linkonce.isr_irq[1][6-9])))
-		/* sections for IRQ20-99 */
-		KEEP(*(SORT(.gnu.linkonce.isr_irq[2-9][0-9])))
-		/* sections for IRQ100-999 */
-		KEEP(*(SORT(.gnu.linkonce.isr_irq[1-9][0-9][0-9])))
-#endif
 	} GROUP_LINK_IN(RAMABLE_REGION)
 
 	SECTION_PROLOGUE(initlevel, (OPTIONAL),)