bsps: Move interrupt controller support to bsps

This patch is a part of the BSP source reorganization.

Update #3285.

1 files changed, 51 insertions, 0 deletions

diff --git a/bsps/arm/gumstix/irq/irq.c b/bsps/arm/gumstix/irq/irq.c
new file mode 100644
index 0000000000..425795b165
--- /dev/null
+++ b/bsps/arm/gumstix/irq/irq.c
@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2010 embedded brains GmbH.
+ *
+ * PXA255 Interrupt handler by Yang Xi <hiyangxi@gmail.com>
+ * Copyright (c) 2004 by Jay Monkman <jtm@lopingdog.com>
+ *
+ *  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 <rtems/score/armv4.h>
+
+#include <bsp.h>
+#include <bsp/irq.h>
+#include <bsp/irq-generic.h>
+
+#include <pxa255.h>
+
+void bsp_interrupt_dispatch(void)
+{
+  rtems_vector_number vector = 31 - __builtin_clz(XSCALE_INT_ICIP);
+
+  bsp_interrupt_handler_dispatch(vector);
+}
+
+void bsp_interrupt_vector_enable(rtems_vector_number vector)
+{
+  bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector));
+  XSCALE_INT_ICMR |= 1 << vector;
+}
+
+void bsp_interrupt_vector_disable(rtems_vector_number vector)
+{
+  bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector));
+  XSCALE_INT_ICMR  &= ~(1 << vector);
+}
+
+rtems_status_code bsp_interrupt_facility_initialize(void)
+{
+  /* disable all interrupts */
+  XSCALE_INT_ICMR = 0x0;
+
+  /* Direct the interrupt to IRQ*/
+  XSCALE_INT_ICLR = 0x0;
+
+  /* Install the IRQ exception handler */
+  _CPU_ISR_install_vector(ARM_EXCEPTION_IRQ, _ARMV4_Exception_interrupt, NULL);
+
+  return RTEMS_SUCCESSFUL;
+}