LEON: added new drivers to the LEON2/LEON3 BSPs

Most drivers use the Driver Manager for device probing, they
work on AMBA-over-PCI systems if PCI is big-endian.

New APIs:
 * GPIO Library, interfaced to GRGPIO
 * GENIRQ, Generic interrupt service implementation helper

New GRLIB Drivers:
 * ACTEL 1553 RT, user interface is similar to 1553 BRM driver
 * GR1553 (1553 BC, RT and BM core)
 * AHBSTAT (AHB error status core)
 * GRADCDAC (Core interfacing to ADC/DAC hardware)
 * GRGPIO (GPIO port accessed from GPIO Library)
 * MCTRL (Memory controller settings configuration)
 * GRETH (10/100/1000 Ethernet driver using Driver manager)
 * GRPWM (Pulse Width Modulation core)
 * SPICTRL (SPI master interface)
 * GRSPW_ROUTER (SpaceWire Router AMBA configuration interface)
 * GRCTM (SpaceCraft on-board Time Management core)
 * SPWCUC (Time distribution over SpaceWire)
 * GRTC (SpaceCraft up-link Tele core)
 * GRTM (SpaceCraft down-link Tele Metry core)

GR712RC ASIC specific interfaces:
 * GRASCS
 * CANMUX (select between OCCAN and SATCAN)
 * SATCAN
 * SLINK

1 files changed, 107 insertions, 0 deletions

diff --git a/c/src/lib/libbsp/sparc/shared/include/genirq.h b/c/src/lib/libbsp/sparc/shared/include/genirq.h
new file mode 100644
index 0000000000..1b83698d57
--- /dev/null
+++ b/c/src/lib/libbsp/sparc/shared/include/genirq.h
@@ -0,0 +1,107 @@
+/* General Shared Interrupt handling function interface 
+ *
+ * The functions does not manipulate the IRQ controller or the 
+ * interrupt level of the CPU. It simply helps the caller with
+ * managing shared interrupts where multiple interrupt routines
+ * share on interrupt vector/number.
+ *
+ * COPYRIGHT (c) 2008.
+ * Cobham Gaisler AB.
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.com/license/LICENSE.
+ */
+
+#ifndef __GENIRQ_H__
+#define __GENIRQ_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef void (*genirq_handler)(void *arg);
+typedef void* genirq_t;
+
+struct genirq_stats {
+	unsigned int	irq_cnt;
+};
+
+/* Initialize the genirq interface. Must be the first function
+ * called.
+ *
+ * Returns zero on success, otherwise failure.
+ */
+extern genirq_t genirq_init(int number_of_irqs);
+
+/* Free the dynamically allocated memory that the genirq interface has 
+ * allocated.
+ *
+ * Returns zero on success, otherwise failure.
+ */
+extern void genirq_destroy(genirq_t d);
+
+/* Check IRQ number validity 
+ * 
+ * Returns zero for valid IRQ numbers, -1 of invalid IRQ numbers.
+ */
+extern int genirq_check(genirq_t d, int irq);
+
+/* Register shared interrupt handler.
+ *
+ * \param irq    The interrupt number to register ISR on
+ * \param isr    The interrupt service routine called upon IRQ
+ * \param arg    The argument given to isr() when called.
+ *
+ * Return Values
+ * -1  = Failed
+ * 0   = Handler registered Successfully, first handler on this IRQ
+ * 1   = Handler registered Successfully, _not_ first handler on this IRQ
+ */
+extern int genirq_register(genirq_t d, int irq, genirq_handler isr, void *arg);
+
+/* Unregister an previous registered interrupt handler 
+ *
+ * Return Values
+ *  -1 = ISR not registered before
+ *  0  = ISR unregistered
+ *  1  = Unable to unregister enabled ISR
+ */
+extern int genirq_unregister(genirq_t d, int irq, genirq_handler isr, void *arg);
+
+/* Enables IRQ only for this isr[arg] combination. Records if this 
+ * is the first interrupt enable, only then must interrupts be enabled
+ * on the interrupt controller.
+ *
+ * IRQs must be disabled before entering this function.
+ *
+ * Return values
+ *  -1 = Failure, for example isr[arg] not registered on this irq
+ *  0  = IRQ must be enabled, it is the first IRQ handler to be enabled
+ *  1  = IRQ has already been enabled, either by isr[arg] or by another handler
+ */
+extern int genirq_enable(genirq_t d, int irq, genirq_handler isr, void *arg);
+
+/* Disables IRQ only for this isr[arg] combination. Records if this 
+ * is the only interrupt handler that is enabled on this IRQ, only then
+ * must interrupts be disabled on the interrupt controller.
+ *
+ * IRQs must be disabled before entering this function.
+ *
+ * Return values
+ *  -1 = Failure, for example isr[arg] not registered on this irq
+ *  0  = IRQ must be disabled, no ISR are enabled for this IRQ
+ *  1  = ISR has already been disabled, or other ISRs are still enabled
+ */
+extern int genirq_disable(genirq_t d, int irq, genirq_handler isr, void *arg);
+
+/* Must be called by user when an IRQ has fired, the argument 'irq' 
+ * is the IRQ number of the IRQ which was fired.
+ */
+extern void genirq_doirq(genirq_t d, int irq);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif