-/* $Id: irq.h,v 1.21 2002/01/23 11:27:36 davem Exp $
- * irq.h: IRQ registers on the 64-bit Sparc.
+/* irq.h: IRQ registers on the 64-bit Sparc.
*
- * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
* Copyright (C) 1998 Jakub Jelinek (jj@ultra.linux.cz)
*/
#ifndef _SPARC64_IRQ_H
#define _SPARC64_IRQ_H
-#include <linux/config.h>
#include <linux/linkage.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#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_VALID 0x80000000UL /* IRQ Enabled */
+#define IMAP_TID_UPA 0x7c000000UL /* UPA TargetID */
+#define IMAP_TID_JBUS 0x7c000000UL /* JBUS TargetID */
#define IMAP_TID_SHIFT 26
-#define IMAP_AID_SAFARI 0x7c000000 /* Safari AgentID */
+#define IMAP_AID_SAFARI 0x7c000000UL /* Safari AgentID */
#define IMAP_AID_SHIFT 26
-#define IMAP_NID_SAFARI 0x03e00000 /* Safari NodeID */
+#define IMAP_NID_SAFARI 0x03e00000UL /* 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*/
-
-#define ICLR_IDLE 0x00000000 /* Idle state */
-#define ICLR_TRANSMIT 0x00000001 /* Transmit state */
-#define ICLR_PENDING 0x00000003 /* Pending state */
-
-/* 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 IMAP_IGN 0x000007c0UL /* IRQ Group Number */
+#define IMAP_INO 0x0000003fUL /* IRQ Number */
+#define IMAP_INR 0x000007ffUL /* Full interrupt number*/
-#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))
+#define ICLR_IDLE 0x00000000UL /* Idle state */
+#define ICLR_TRANSMIT 0x00000001UL /* Transmit state */
+#define ICLR_PENDING 0x00000003UL /* Pending state */
-#define NR_IRQS 16
+/* 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
+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 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 sun4v_build_irq(u32 devhandle, unsigned int devino, int pil, unsigned char flags);
+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 unsigned int sun4v_build_virq(u32 devhandle, unsigned int devino);
+extern unsigned int sun4v_build_msi(u32 devhandle, unsigned int *virt_irq_p,
+ unsigned int msi_devino_start,
+ unsigned int msi_devino_end);
+extern void sun4v_destroy_msi(unsigned int virt_irq);
+extern unsigned int sun4u_build_msi(u32 portid, unsigned int *virt_irq_p,
+ unsigned int msi_devino_start,
+ unsigned int msi_devino_end,
+ unsigned long imap_base,
+ unsigned long iclr_base);
+extern void sun4u_destroy_msi(unsigned int virt_irq);
extern unsigned int sbus_build_irq(void *sbus, unsigned int ino);
-static __inline__ void set_softint(unsigned long bits)
+extern unsigned char virt_irq_alloc(unsigned int dev_handle,
+ unsigned int dev_ino);
+#ifdef CONFIG_PCI_MSI
+extern void virt_irq_free(unsigned int virt_irq);
+#endif
+
+extern void fixup_irqs(void);
+
+static inline void set_softint(unsigned long bits)
{
__asm__ __volatile__("wr %0, 0x0, %%set_softint"
: /* No outputs */
: "r" (bits));
}
-static __inline__ void clear_softint(unsigned long bits)
+static inline void clear_softint(unsigned long bits)
{
__asm__ __volatile__("wr %0, 0x0, %%clear_softint"
: /* No outputs */
: "r" (bits));
}
-static __inline__ unsigned long get_softint(void)
+static inline unsigned long get_softint(void)
{
unsigned long retval;
return retval;
}
-struct irqaction;
-struct pt_regs;
-int handle_IRQ_event(unsigned int, struct pt_regs *, struct irqaction *);
-
#endif
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