patch-2.4.22 linux-2.4.22/include/asm-sh64/irq.h

• Lines: 143
• Date: 2003-08-25 04:44:44.000000000 -0700
• Orig file: linux-2.4.21/include/asm-sh64/irq.h
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.21/include/asm-sh64/irq.h linux-2.4.22/include/asm-sh64/irq.h
@@ -0,0 +1,142 @@
+#ifndef __ASM_SH64_IRQ_H
+#define __ASM_SH64_IRQ_H
+
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * include/asm-sh64/irq.h
+ *
+ * Copyright (C) 2000, 2001  Paolo Alberelli
+ *
+ */
+
+#include <linux/config.h>
+
+/*
+ * Encoded IRQs are not considered worth to be supported.
+ * Main reason is that there's no per-encoded-interrupt
+ * enable/disable mechanism (as there was in SH3/4).
+ * An all enabled/all disabled is worth only if there's
+ * a cascaded IC to disable/enable/ack on. Until such
+ * IC is available there's no such support.
+ *
+ * Presumably Encoded IRQs may use extra IRQs beyond 64,
+ * below. Some logic must be added to cope with IRQ_IRL?
+ * in an exclusive way.
+ *
+ * Priorities are set at Platform level, when IRQ_IRL0-3
+ * are set to 0 Encoding is allowed. Otherwise it's not
+ * allowed.
+ */
+
+/* Independent IRQs */
+#define IRQ_IRL0	0
+#define IRQ_IRL1	1
+#define IRQ_IRL2	2
+#define IRQ_IRL3	3
+
+#define IRQ_INTA	4
+#define IRQ_INTB	5
+#define IRQ_INTC	6
+#define IRQ_INTD	7
+
+#define IRQ_SERR	12
+#define IRQ_ERR		13
+#define IRQ_PWR3	14
+#define IRQ_PWR2	15
+#define IRQ_PWR1	16
+#define IRQ_PWR0	17
+
+#define IRQ_DMTE0	18
+#define IRQ_DMTE1	19
+#define IRQ_DMTE2	20
+#define IRQ_DMTE3	21
+#define IRQ_DAERR	22
+
+#define IRQ_TUNI0	32
+#define IRQ_TUNI1	33
+#define IRQ_TUNI2	34
+#define IRQ_TICPI2	35
+
+#define IRQ_ATI		36
+#define IRQ_PRI		37
+#define IRQ_CUI		38
+
+#define IRQ_ERI		39
+#define IRQ_RXI		40
+#define IRQ_BRI		41
+#define IRQ_TXI		42
+
+#define IRQ_ITI		63
+
+#define NR_INTC_IRQS	64
+
+#ifdef CONFIG_SH_CAYMAN
+#define NR_EXT_IRQS     32
+#define START_EXT_IRQS  64
+
+/* PCI bus 2 uses encoded external interrupts on the Cayman board */
+#define IRQ_P2INTA      (START_EXT_IRQS + (3*8) + 0)
+#define IRQ_P2INTB      (START_EXT_IRQS + (3*8) + 1)
+#define IRQ_P2INTC      (START_EXT_IRQS + (3*8) + 2)
+#define IRQ_P2INTD      (START_EXT_IRQS + (3*8) + 3)
+
+#define START_EXT_IRQS  64
+#else
+#define NR_EXT_IRQS	0
+#endif
+
+#define NR_IRQS		(NR_INTC_IRQS+NR_EXT_IRQS)
+
+
+/* Default IRQs, fixed */
+#define TIMER_IRQ	IRQ_TUNI0
+#define RTC_IRQ		IRQ_CUI
+
+/* Default Priorities, Platform may choose differently */
+#define	NO_PRIORITY	0	/* Disabled */
+#define TIMER_PRIORITY	2
+#define RTC_PRIORITY	TIMER_PRIORITY
+#define SCIF_PRIORITY	3
+#define INTD_PRIORITY	3
+#define	IRL3_PRIORITY	4
+#define INTC_PRIORITY	6
+#define	IRL2_PRIORITY	7
+#define INTB_PRIORITY	9
+#define	IRL1_PRIORITY	10
+#define INTA_PRIORITY	12
+#define	IRL0_PRIORITY	13
+#define TOP_PRIORITY	15
+
+extern void disable_irq(unsigned int);
+extern void disable_irq_nosync(unsigned int);
+extern void enable_irq(unsigned int);
+
+extern int intc_evt_to_irq[(0xE20/0x20)+1];
+int intc_irq_describe(char* p, int irq);
+
+#ifdef CONFIG_SH_CAYMAN
+int cayman_irq_demux(int evt);
+int cayman_irq_describe(char* p, int irq);
+#define irq_demux(x) cayman_irq_demux(x)
+#define irq_describe(p, x) cayman_irq_describe(p, x)
+#else
+#define irq_demux(x) (intc_evt_to_irq[x])
+#define irq_describe(p, x) intc_irq_describe(p, x)
+#endif
+
+/*
+ * Function for "on chip support modules".
+ */
+
+/*
+ * SH-5 supports Priority based interrupts only.
+ * Interrupt priorities are defined at platform level.
+ */
+#define set_ipr_data(a, b, c, d)
+#define make_ipr_irq(a)
+#define make_imask_irq(a)
+
+#endif /* __ASM_SH64_IRQ_H */