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-rw-r--r--kernel/arch/m68k/include/asm/mcfintc.h89
1 files changed, 89 insertions, 0 deletions
diff --git a/kernel/arch/m68k/include/asm/mcfintc.h b/kernel/arch/m68k/include/asm/mcfintc.h
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+++ b/kernel/arch/m68k/include/asm/mcfintc.h
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+/****************************************************************************/
+
+/*
+ * mcfintc.h -- support definitions for the simple ColdFire
+ * Interrupt Controller
+ *
+ * (C) Copyright 2009, Greg Ungerer <gerg@uclinux.org>
+ */
+
+/****************************************************************************/
+#ifndef mcfintc_h
+#define mcfintc_h
+/****************************************************************************/
+
+/*
+ * Most of the older ColdFire parts use the same simple interrupt
+ * controller. This is currently used on the 5206, 5206e, 5249, 5307
+ * and 5407 parts.
+ *
+ * The builtin peripherals are masked through dedicated bits in the
+ * Interrupt Mask register (IMR) - and this is not indexed (or in any way
+ * related to) the actual interrupt number they use. So knowing the IRQ
+ * number doesn't explicitly map to a certain internal device for
+ * interrupt control purposes.
+ */
+
+/*
+ * Bit definitions for the ICR family of registers.
+ */
+#define MCFSIM_ICR_AUTOVEC 0x80 /* Auto-vectored intr */
+#define MCFSIM_ICR_LEVEL0 0x00 /* Level 0 intr */
+#define MCFSIM_ICR_LEVEL1 0x04 /* Level 1 intr */
+#define MCFSIM_ICR_LEVEL2 0x08 /* Level 2 intr */
+#define MCFSIM_ICR_LEVEL3 0x0c /* Level 3 intr */
+#define MCFSIM_ICR_LEVEL4 0x10 /* Level 4 intr */
+#define MCFSIM_ICR_LEVEL5 0x14 /* Level 5 intr */
+#define MCFSIM_ICR_LEVEL6 0x18 /* Level 6 intr */
+#define MCFSIM_ICR_LEVEL7 0x1c /* Level 7 intr */
+
+#define MCFSIM_ICR_PRI0 0x00 /* Priority 0 intr */
+#define MCFSIM_ICR_PRI1 0x01 /* Priority 1 intr */
+#define MCFSIM_ICR_PRI2 0x02 /* Priority 2 intr */
+#define MCFSIM_ICR_PRI3 0x03 /* Priority 3 intr */
+
+/*
+ * IMR bit position definitions. Not all ColdFire parts with this interrupt
+ * controller actually support all of these interrupt sources. But the bit
+ * numbers are the same in all cores.
+ */
+#define MCFINTC_EINT1 1 /* External int #1 */
+#define MCFINTC_EINT2 2 /* External int #2 */
+#define MCFINTC_EINT3 3 /* External int #3 */
+#define MCFINTC_EINT4 4 /* External int #4 */
+#define MCFINTC_EINT5 5 /* External int #5 */
+#define MCFINTC_EINT6 6 /* External int #6 */
+#define MCFINTC_EINT7 7 /* External int #7 */
+#define MCFINTC_SWT 8 /* Software Watchdog */
+#define MCFINTC_TIMER1 9
+#define MCFINTC_TIMER2 10
+#define MCFINTC_I2C 11 /* I2C / MBUS */
+#define MCFINTC_UART0 12
+#define MCFINTC_UART1 13
+#define MCFINTC_DMA0 14
+#define MCFINTC_DMA1 15
+#define MCFINTC_DMA2 16
+#define MCFINTC_DMA3 17
+#define MCFINTC_QSPI 18
+
+#ifndef __ASSEMBLER__
+
+/*
+ * There is no one-is-one correspondance between the interrupt number (irq)
+ * and the bit fields on the mask register. So we create a per-cpu type
+ * mapping of irq to mask bit. The CPU platform code needs to register
+ * its supported irq's at init time, using this function.
+ */
+extern unsigned char mcf_irq2imr[];
+static inline void mcf_mapirq2imr(int irq, int imr)
+{
+ mcf_irq2imr[irq] = imr;
+}
+
+void mcf_autovector(int irq);
+void mcf_setimr(int index);
+void mcf_clrimr(int index);
+#endif
+
+/****************************************************************************/
+#endif /* mcfintc_h */