2007-04-25 Ray Xu <xr@trasin.net>

	* lpc22xx/irq/bsp_irq_init.c
	lpc22xx/irq/irq.c, lpc22xx/irq/irq.h: New (Initial submission).

1 files changed, 144 insertions, 0 deletions

diff --git a/c/src/lib/libcpu/arm/lpc22xx/irq/irq.h b/c/src/lib/libcpu/arm/lpc22xx/irq/irq.h
new file mode 100644
index 0000000000..a199571cfb
--- /dev/null
+++ b/c/src/lib/libcpu/arm/lpc22xx/irq/irq.h
@@ -0,0 +1,144 @@
+/*
+ * Interrupt handler Header file
+ *
+ * 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.OARcorp.com/rtems/license.html.
+ *
+ *
+ *  $Id$
+ */
+
+#ifndef __IRQ_H__
+#define __IRQ_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+  /* define that can be useful (the values are just examples) */
+#ifndef __asm__
+
+/*
+ * Include some preprocessor value also used by assember code
+ */
+  
+#include <rtems.h>
+#include <lpc22xx.h>
+
+extern void default_int_handler();
+/***********************************************************************
+ * Constants
+ **********************************************************************/
+
+/* possible interrupt sources on the LPC22xx */
+#define LPC22xx_INTERRUPT_WDINT	 0	/* Watchdog int. 0 */
+#define LPC22xx_INTERRUPT_RSV0	 1	/* Reserved int. 1 */
+#define LPC22xx_INTERRUPT_DBGRX	 2	/* Embedded ICE DbgCommRx receive */
+#define LPC22xx_INTERRUPT_DBGTX	 3	/* Embedded ICE DbgCommRx Transmit*/
+#define LPC22xx_INTERRUPT_TIMER0 4	/* Timer 0 */
+#define LPC22xx_INTERRUPT_TIMER1 5	/* Timer 1 */
+#define LPC22xx_INTERRUPT_UART0	 6	/* UART 0 */
+#define LPC22xx_INTERRUPT_UART1  7	/* UART 1 */
+#define LPC22xx_INTERRUPT_PWM0 	 8	/* PWM */
+#define LPC22xx_INTERRUPT_I2C 	 9	/* I2C  */
+#define LPC22xx_INTERRUPT_SPI0 	10	/* SPI0 */
+#define LPC22xx_INTERRUPT_SPI1 	11	/* SPI1 */
+#define LPC22xx_INTERRUPT_PLL 	12	/* PLL */
+#define LPC22xx_INTERRUPT_RTC 	13	/* RTC */
+#define LPC22xx_INTERRUPT_EINT0	14	/* Externel Interrupt 0 */
+#define LPC22xx_INTERRUPT_EINT1	15	/* Externel Interrupt 1 */
+#define LPC22xx_INTERRUPT_EINT2	16	/* Externel Interrupt 2 */
+#define LPC22xx_INTERRUPT_EINT3	17	/* Externel Interrupt 3 */
+#define LPC22xx_INTERRUPT_ADC 	18	/* AD Converter */
+#define LPC22xx_INTERRUPT_CANERR 19	/* CAN LUTerr interrupt */
+#define LPC22xx_INTERRUPT_CAN1TX 20	/* CAN1 Tx interrupt */
+#define LPC22xx_INTERRUPT_CAN1RX 21	/* CAN1 Rx interrupt */
+#define LPC22xx_INTERRUPT_CAN2TX 22	/* CAN2 Tx interrupt */
+#define LPC22xx_INTERRUPT_CAN2RX 23	/* CAN2 Rx interrupt */
+#define LPC22xx_INTERRUPT_CAN3TX 24	/* CAN1 Tx interrupt */
+#define LPC22xx_INTERRUPT_CAN3RX 25	/* CAN1 Rx interrupt */
+#define LPC22xx_INTERRUPT_CAN4TX 26	/* CAN2 Tx interrupt */
+#define LPC22xx_INTERRUPT_CAN4RX 27	/* CAN2 Rx interrupt */
+#define BSP_MAX_INT              28
+
+#define UNDEFINED_INSTRUCTION_VECTOR_ADDR   (*(u_long *)0x00000004L)   
+#define SOFTWARE_INTERRUPT_VECTOR_ADDR      (*(u_long *)0x00000008L)
+#define PREFETCH_ABORT_VECTOR_ADDR          (*(u_long *)0x0000000CL)
+#define DATA_ABORT_VECTOR_ADDR              (*(u_long *)0x00000010L)
+#define IRQ_VECTOR_ADDR                     (*(u_long *)0x00000018L)
+#define FIQ_VECTOR_ADDR                     (*(u_long *)0x0000001CL)
+
+#define DATA_ABORT_ISR_ADDR                 (*(u_long *)0x00000030L)
+#define IRQ_ISR_ADDR                        (*(u_long *)0x00000038L)
+#define FIQ_ISR_ADDR                        (*(u_long *)0x0000003CL)
+
+              
+typedef unsigned char  rtems_irq_level;
+typedef unsigned char  rtems_irq_trigger;
+
+typedef unsigned int rtems_irq_number;
+struct  __rtems_irq_connect_data__;     /* forward declaratiuon */
+
+typedef void (*rtems_irq_hdl)       (void);
+typedef void (*rtems_irq_enable)    (const struct __rtems_irq_connect_data__*);
+typedef void (*rtems_irq_disable)   (const struct __rtems_irq_connect_data__*);
+typedef int  (*rtems_irq_is_enabled)(const struct __rtems_irq_connect_data__*);
+
+//extern rtems_irq_hdl bsp_vector_table[BSP_MAX_INT];
+#define VECTOR_TABLE VICVectAddrBase
+  											   
+typedef struct __rtems_irq_connect_data__ {
+    /* IRQ line */
+    rtems_irq_number              name;
+
+    /* Handler */
+    rtems_irq_hdl                 hdl;
+
+    /* function for enabling interrupts at device level. */
+    rtems_irq_enable              on;
+
+    /* function for disabling interrupts at device level. */
+    rtems_irq_disable             off;
+
+    /* Function to test if interrupt is enabled */
+    rtems_irq_is_enabled        isOn;
+
+    /* priority level of interrupt */
+    rtems_irq_level               irqLevel;
+
+    /* Trigger method (rising/falling edge or high/low level) */
+    rtems_irq_trigger             irqTrigger;
+} rtems_irq_connect_data;
+
+/*
+ * function to initialize the interrupt for a specific BSP
+ */
+void BSP_rtems_irq_mngt_init();
+
+
+/*
+ * function to connect a particular irq handler.
+ */
+int BSP_install_rtems_irq_handler       (const rtems_irq_connect_data*);
+
+/*
+ * function to get the current RTEMS irq handler for ptr->name. 
+ */
+int BSP_get_current_rtems_irq_handler   (rtems_irq_connect_data* ptr);
+
+/*
+ * function to disconnect the RTEMS irq handler for ptr->name.
+ */
+int BSP_remove_rtems_irq_handler        (const rtems_irq_connect_data*);
+
+#endif /* __asm__ */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __IRQ_H__ */