X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Fasm-sparc64%2Firq.h;fp=include%2Fasm-sparc64%2Firq.h;h=8b70edcb80dc04732c598e2fc0df00f3770f95bc;hb=64ba3f394c830ec48a1c31b53dcae312c56f1604;hp=905e59b4a737537bbfe835b5512aaadcdf0c6f4a;hpb=be1e6109ac94a859551f8e1774eb9a8469fe055c;p=linux-2.6.git

diff --git a/include/asm-sparc64/irq.h b/include/asm-sparc64/irq.h
index 905e59b4a..8b70edcb8 100644
--- a/include/asm-sparc64/irq.h
+++ b/include/asm-sparc64/irq.h
@@ -8,6 +8,7 @@
 #ifndef _SPARC64_IRQ_H
 #define _SPARC64_IRQ_H
 
+#include <linux/config.h>
 #include <linux/linkage.h>
 #include <linux/kernel.h>
 #include <linux/errno.h>
@@ -15,15 +16,64 @@
 #include <asm/pil.h>
 #include <asm/ptrace.h>
 
+struct ino_bucket;
+
+#define MAX_IRQ_DESC_ACTION	4
+
+struct irq_desc {
+	void			(*pre_handler)(struct ino_bucket *, void *, void *);
+	void			*pre_handler_arg1;
+	void			*pre_handler_arg2;
+	u32			action_active_mask;
+	struct irqaction	action[MAX_IRQ_DESC_ACTION];
+};
+
+/* You should not mess with this directly. That's the job of irq.c.
+ *
+ * If you make changes here, please update hand coded assembler of
+ * the vectored interrupt trap handler in entry.S -DaveM
+ *
+ * This is currently one DCACHE line, two buckets per L2 cache
+ * line.  Keep this in mind please.
+ */
+struct ino_bucket {
+	/* Next handler in per-CPU PIL worklist.  We know that
+	 * bucket pointers have the high 32-bits clear, so to
+	 * save space we only store the bits we need.
+	 */
+/*0x00*/unsigned int irq_chain;
+
+	/* PIL to schedule this IVEC at. */
+/*0x04*/unsigned char pil;
+
+	/* If an IVEC arrives while irq_info is NULL, we
+	 * set this to notify request_irq() about the event.
+	 */
+/*0x05*/unsigned char pending;
+
+	/* Miscellaneous flags. */
+/*0x06*/unsigned char flags;
+
+	/* Currently unused.  */
+/*0x07*/unsigned char __pad;
+
+	/* Reference to IRQ descriptor for this bucket. */
+/*0x08*/struct irq_desc *irq_info;
+
+	/* Sun5 Interrupt Clear Register. */
+/*0x10*/unsigned long iclr;
+
+	/* Sun5 Interrupt Mapping Register. */
+/*0x18*/unsigned long imap;
+
+};
+
 /* IMAP/ICLR register defines */
 #define IMAP_VALID		0x80000000	/* IRQ Enabled		*/
 #define IMAP_TID_UPA		0x7c000000	/* UPA TargetID		*/
 #define IMAP_TID_JBUS		0x7c000000	/* JBUS TargetID	*/
-#define IMAP_TID_SHIFT		26
 #define IMAP_AID_SAFARI		0x7c000000	/* Safari AgentID	*/
-#define IMAP_AID_SHIFT		26
 #define IMAP_NID_SAFARI		0x03e00000	/* Safari NodeID	*/
-#define IMAP_NID_SHIFT		21
 #define IMAP_IGN		0x000007c0	/* IRQ Group Number	*/
 #define IMAP_INO		0x0000003f	/* IRQ Number		*/
 #define IMAP_INR		0x000007ff	/* Full interrupt number*/
@@ -32,20 +82,35 @@
 #define ICLR_TRANSMIT		0x00000001	/* Transmit state	*/
 #define ICLR_PENDING		0x00000003	/* Pending state	*/
 
-/* The largest number of unique interrupt sources we support.
- * If this needs to ever be larger than 255, you need to change
- * the type of ino_bucket->virt_irq as appropriate.
- *
- * ino_bucket->virt_irq allocation is made during {sun4v_,}build_irq().
- */
-#define NR_IRQS    255
+/* Only 8-bits are available, be careful.  -DaveM */
+#define IBF_PCI		0x02	/* PSYCHO/SABRE/SCHIZO PCI interrupt.	 */
+#define IBF_ACTIVE	0x04	/* Interrupt is active and has a handler.*/
+#define IBF_INPROGRESS	0x10	/* IRQ is being serviced.		 */
+
+#define NUM_IVECS	(IMAP_INR + 1)
+extern struct ino_bucket ivector_table[NUM_IVECS];
+
+#define __irq_ino(irq) \
+        (((struct ino_bucket *)(unsigned long)(irq)) - &ivector_table[0])
+#define __irq_pil(irq) ((struct ino_bucket *)(unsigned long)(irq))->pil
+#define __bucket(irq) ((struct ino_bucket *)(unsigned long)(irq))
+#define __irq(bucket) ((unsigned int)(unsigned long)(bucket))
+
+static __inline__ char *__irq_itoa(unsigned int irq)
+{
+	static char buff[16];
+
+	sprintf(buff, "%d,%x", __irq_pil(irq), (unsigned int)__irq_ino(irq));
+	return buff;
+}
+
+#define NR_IRQS    16
 
-extern void irq_install_pre_handler(int virt_irq,
-				    void (*func)(unsigned int, void *, void *),
-				    void *arg1, void *arg2);
 #define irq_canonicalize(irq)	(irq)
-extern unsigned int build_irq(int inofixup, unsigned long iclr, unsigned long imap);
-extern unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino);
+extern void disable_irq(unsigned int);
+#define disable_irq_nosync disable_irq
+extern void enable_irq(unsigned int);
+extern unsigned int build_irq(int pil, int inofixup, unsigned long iclr, unsigned long imap);
 extern unsigned int sbus_build_irq(void *sbus, unsigned int ino);
 
 static __inline__ void set_softint(unsigned long bits)
@@ -71,4 +136,8 @@ static __inline__ unsigned long get_softint(void)
 	return retval;
 }
 
+struct irqaction;
+struct pt_regs;
+int handle_IRQ_event(unsigned int, struct pt_regs *, struct irqaction *);
+
 #endif