2000-10-18 Sergei Organov <osv@javad.ru>

	* Added full support for MPC505.
	* mpc505/ictrl: New directory.
	* configure.in, mpc505/Makefile.am: Modified to reflect ictrl addition.
	* mpc505/ictrl/.cvsignore, mpc505/ictrl/Makefile.am,
	mpc505/ictrl/ictrl.c, mpc505/ictrl/ictrl.h: New files.
	* mpc505/timer/timer.c: Use <rtems.h>, not "rtems.h".
	* mpc505/vectors/Makefile.am: alignment exception handler now included.
	* mpc505/vectors/vectors.S: Now use constants for exception numbers.
	* old_exception_processing/ppc_offs.h: New file.
	* old_exception_processing/Makefile.am: Account for ppc_offs.h.
	* old_exception_processing/cpu.h: Make Nest and Disable levels volatile.
	* old_exception_processing/cpu_asm.S: Offsets moved to ppc_offs.h.

1 files changed, 75 insertions, 0 deletions

diff --git a/c/src/lib/libcpu/powerpc/mpc505/ictrl/ictrl.h b/c/src/lib/libcpu/powerpc/mpc505/ictrl/ictrl.h
new file mode 100644
index 0000000000..303ece825d
--- /dev/null
+++ b/c/src/lib/libcpu/powerpc/mpc505/ictrl/ictrl.h
@@ -0,0 +1,75 @@
+#ifndef _ICTRL_H
+#define _ICTRL_H
+
+/*
+ * mpc505/509 external interrupt controller management.
+ *
+ * FIXME: should be somehow merged into general RTEMS interrupt
+ * management code.
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define _SIU_IRQENABLE  ((unsigned long volatile *const)0x8007EFA8)
+#define _SIU_IRQPEND    ((unsigned long volatile *const)0x8007EFA0)
+
+/* Interrupt masks. */
+enum {
+  IMASK_EXT0  = 0x80000000,
+  IMASK_EXT1  = 0x20000000,
+  IMASK_EXT2  = 0x08000000,
+  IMASK_EXT3  = 0x02000000,
+  IMASK_EXT4  = 0x00800000,
+  IMASK_EXT5  = 0x00200000,
+  IMASK_EXT6  = 0x00080000,
+  IMASK_ALL   = IMASK_EXT0 | IMASK_EXT1 | IMASK_EXT2 | IMASK_EXT3 |
+                IMASK_EXT4 | IMASK_EXT5 | IMASK_EXT6
+};
+
+/* Interrupt numbers. */
+typedef enum {
+  IRQ_EXT0,
+  IRQ_EXT1,
+  IRQ_EXT2,
+  IRQ_EXT3,
+  IRQ_EXT4,
+  IRQ_EXT5,
+  IRQ_EXT6,
+  NUM_IRQS
+} ExtInt;
+
+/* Type of external interrupt handlers */
+typedef void (*ExtIsrHandler) (void);
+
+/* Initialization. Must be called once after RTEMS interrupts sybsystem
+   is initiailized. 'predriver_hook' is one of such places. */
+extern void extIsrInit( void );
+
+/* Set interrupt handler 'handler' for external interrupt number
+   'interrupt'. */
+extern void extIrqSetHandler(ExtInt interrupt, ExtIsrHandler handler);
+
+/* Check is external interrupt 'irq' (IMASK_XXXX) is pended. */
+#define extIrqIsSet(irq) \
+  (*_SIU_IRQPEND & (irq))
+
+/* Enable external interrupt 'irq' (IMASK_XXXX) processing. */
+#define extIrqEnable(irq) \
+  (*_SIU_IRQENABLE |= (irq))
+
+/* Disable external interrupt 'irq' (IMASK_XXXX) processing. */
+#define extIrqDisable(irq) \
+  (*_SIU_IRQENABLE &= ~(irq))
+
+/* Check if external interrupt 'irq' (IMASK_XXXX) processing is
+   enabled. */
+#define extIrqGetEnable \
+  (*_SIU_IRQENABLE)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _ICTRL_H */