From 1f4ae254c72f95843653a8546a37581fef256d20 Mon Sep 17 00:00:00 2001
From: Sebastian Huber <sebastian.huber@embedded-brains.de>
Date: Mon, 19 Jul 2021 16:29:59 +0200
Subject: bsp/leon3: Move and simplify bsp_irq_fixup()

---
 bsps/sparc/leon3/clock/ckinit.c         |  4 ++--
 bsps/sparc/leon3/include/bsp/irq.h      |  1 -
 bsps/sparc/leon3/include/bsp/leon3.h    | 31 +++++++++++++++++++++++++++++++
 bsps/sparc/leon3/include/leon.h         | 18 ------------------
 bsps/sparc/leon3/start/eirq.c           |  8 ++------
 bsps/sparc/shared/irq/bsp_isr_handler.c |  4 ++++
 bsps/sparc/shared/irq/irq-shared.c      |  4 ++++
 7 files changed, 43 insertions(+), 27 deletions(-)

diff --git a/bsps/sparc/leon3/clock/ckinit.c b/bsps/sparc/leon3/clock/ckinit.c
index 7869b1a97e..3bc35e1f64 100644
--- a/bsps/sparc/leon3/clock/ckinit.c
+++ b/bsps/sparc/leon3/clock/ckinit.c
@@ -40,9 +40,9 @@
  */
 
 #include <bsp.h>
-#include <bsp/irq.h>
-#include <bspopts.h>
 #include <bsp/fatal.h>
+#include <bsp/irq.h>
+#include <leon.h>
 #include <rtems/rtems/intr.h>
 #include <grlib/ambapp.h>
 #include <rtems/score/profiling.h>
diff --git a/bsps/sparc/leon3/include/bsp/irq.h b/bsps/sparc/leon3/include/bsp/irq.h
index a7054030e2..ef0f6245f9 100644
--- a/bsps/sparc/leon3/include/bsp/irq.h
+++ b/bsps/sparc/leon3/include/bsp/irq.h
@@ -37,7 +37,6 @@
 #ifndef LIBBSP_LEON3_IRQ_CONFIG_H
 #define LIBBSP_LEON3_IRQ_CONFIG_H
 
-#include <leon.h>
 #include <rtems/score/processormask.h>
 
 #define BSP_INTERRUPT_VECTOR_MAX_STD 15 /* Standard IRQ controller */
diff --git a/bsps/sparc/leon3/include/bsp/leon3.h b/bsps/sparc/leon3/include/bsp/leon3.h
index ff1ef261e6..32d18be14b 100644
--- a/bsps/sparc/leon3/include/bsp/leon3.h
+++ b/bsps/sparc/leon3/include/bsp/leon3.h
@@ -66,6 +66,14 @@ extern volatile struct irqmp_regs *LEON3_IrqCtrl_Regs;
  */
 extern struct ambapp_dev *LEON3_IrqCtrl_Adev;
 
+/**
+ * @brief This object provides the interrupt number used to multiplex extended
+ *   interrupts or is zero if no extended interrupts are available.
+ *
+ * This object should be read-only after initialization.
+ */
+extern uint32_t LEON3_IrqCtrl_EIrq;
+
 /**
  * @brief Initializes the interrupt controller for the boot processor.
  *
@@ -73,6 +81,29 @@ extern struct ambapp_dev *LEON3_IrqCtrl_Adev;
  */
 void leon3_ext_irq_init( volatile struct irqmp_regs *regs );
 
+/**
+ * @brief Acknowledges and maps extended interrupts if this feature is
+ * available and the interrupt for extended interrupts is present.
+ *
+ * @param irq is the standard interrupt number.
+ */
+static inline uint32_t bsp_irq_fixup( uint32_t irq )
+{
+  uint32_t eirq;
+
+  if ( irq != LEON3_IrqCtrl_EIrq ) {
+    return irq;
+  }
+
+  eirq = LEON3_IrqCtrl_Regs->intid[ _LEON3_Get_current_processor() ] & 0x1f;
+
+  if ( eirq < 16 ) {
+    return irq;
+  }
+
+  return eirq;
+}
+
 /** @} */
 
 #ifdef __cplusplus
diff --git a/bsps/sparc/leon3/include/leon.h b/bsps/sparc/leon3/include/leon.h
index 0623eaa4ff..82e93ddb41 100644
--- a/bsps/sparc/leon3/include/leon.h
+++ b/bsps/sparc/leon3/include/leon.h
@@ -154,24 +154,6 @@ extern struct ambapp_dev *LEON3_Timer_Adev;
 /* LEON3 CPU Index of boot CPU */
 extern uint32_t LEON3_Cpu_Index;
 
-/* The external IRQ number, -1 if not external interrupts */
-extern int LEON3_IrqCtrl_EIrq;
-
-static __inline__ int bsp_irq_fixup(int irq)
-{
-  int eirq, cpu;
-
-  if (LEON3_IrqCtrl_EIrq != 0 && irq == LEON3_IrqCtrl_EIrq) {
-    /* Get interrupt number from IRQ controller */
-    cpu = _LEON3_Get_current_processor();
-    eirq = LEON3_IrqCtrl_Regs->intid[cpu] & 0x1f;
-    if (eirq & 0x10)
-      irq = eirq;
-  }
-
-  return irq;
-}
-
 /* Macros used for manipulating bits in LEON3 GP Timer Control Register */
 
 #define LEON3_IRQMPSTATUS_CPUNR     28
diff --git a/bsps/sparc/leon3/start/eirq.c b/bsps/sparc/leon3/start/eirq.c
index 0be5af1bd0..1f47aa5439 100644
--- a/bsps/sparc/leon3/start/eirq.c
+++ b/bsps/sparc/leon3/start/eirq.c
@@ -36,7 +36,7 @@
 #include <bsp/irq-generic.h>
 
 /* GRLIB extended IRQ controller IRQ number */
-int LEON3_IrqCtrl_EIrq = -1;
+uint32_t LEON3_IrqCtrl_EIrq;
 
 rtems_interrupt_lock LEON3_IrqCtrl_Lock =
   RTEMS_INTERRUPT_LOCK_INITIALIZER("LEON3 IrqCtrl");
@@ -47,11 +47,7 @@ void leon3_ext_irq_init(volatile struct irqmp_regs *regs)
   regs->mask[LEON3_Cpu_Index] = 0;
   regs->force[LEON3_Cpu_Index] = 0;
   regs->iclear = 0xffffffff;
-
-  if ( (regs->mpstat >> 16) & 0xf ) {
-    /* Extended IRQ controller available */
-    LEON3_IrqCtrl_EIrq = (regs->mpstat >> 16) & 0xf;
-  }
+  LEON3_IrqCtrl_EIrq = (regs->mpstat >> 16) & 0xf;
 }
 
 bool bsp_interrupt_is_valid_vector(rtems_vector_number vector)
diff --git a/bsps/sparc/shared/irq/bsp_isr_handler.c b/bsps/sparc/shared/irq/bsp_isr_handler.c
index cf2800cd85..22d168cdb6 100644
--- a/bsps/sparc/shared/irq/bsp_isr_handler.c
+++ b/bsps/sparc/shared/irq/bsp_isr_handler.c
@@ -30,6 +30,10 @@
 #include <bsp.h>
 #include <bsp/irq-generic.h>
 
+#ifdef LEON3
+#include <bsp/leon3.h>
+#endif
+
 /*
  * This function is called directly from _SPARC_Interrupt_trap() for
  * traps 0x10 to 0x1F which correspond to IRQ 0 to 15 respectively.
diff --git a/bsps/sparc/shared/irq/irq-shared.c b/bsps/sparc/shared/irq/irq-shared.c
index 0a79b2ffa3..01f544df0e 100644
--- a/bsps/sparc/shared/irq/irq-shared.c
+++ b/bsps/sparc/shared/irq/irq-shared.c
@@ -30,6 +30,10 @@
 #include <bsp.h>
 #include <bsp/irq-generic.h>
 
+#if defined(LEON3)
+#include <leon.h>
+#endif
+
 static inline int bsp_irq_cpu(int irq)
 {
 #if defined(RTEMS_SMP)
-- 
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