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759f89e03c
This also makes us use the MSI queues correctly. Each MSI queue is serviced by a normal sun4u/sun4v INO interrupt handler. This handler runs the MSI queue and dispatches the virtual interrupts indicated by arriving MSIs in that MSI queue. All of the common logic is placed in pci_msi.c, with callbacks to handle the PCI controller specific aspects of the operations. This common infrastructure will make it much easier to add MSG support. Signed-off-by: David S. Miller <davem@davemloft.net>
93 lines
3 KiB
C
93 lines
3 KiB
C
/* $Id: irq.h,v 1.21 2002/01/23 11:27:36 davem Exp $
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* irq.h: IRQ registers on the 64-bit Sparc.
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*
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* Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
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* Copyright (C) 1998 Jakub Jelinek (jj@ultra.linux.cz)
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*/
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#ifndef _SPARC64_IRQ_H
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#define _SPARC64_IRQ_H
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#include <linux/linkage.h>
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/interrupt.h>
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#include <asm/pil.h>
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#include <asm/ptrace.h>
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/* IMAP/ICLR register defines */
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#define IMAP_VALID 0x80000000UL /* IRQ Enabled */
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#define IMAP_TID_UPA 0x7c000000UL /* UPA TargetID */
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#define IMAP_TID_JBUS 0x7c000000UL /* JBUS TargetID */
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#define IMAP_TID_SHIFT 26
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#define IMAP_AID_SAFARI 0x7c000000UL /* Safari AgentID */
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#define IMAP_AID_SHIFT 26
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#define IMAP_NID_SAFARI 0x03e00000UL /* Safari NodeID */
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#define IMAP_NID_SHIFT 21
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#define IMAP_IGN 0x000007c0UL /* IRQ Group Number */
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#define IMAP_INO 0x0000003fUL /* IRQ Number */
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#define IMAP_INR 0x000007ffUL /* Full interrupt number*/
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#define ICLR_IDLE 0x00000000UL /* Idle state */
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#define ICLR_TRANSMIT 0x00000001UL /* Transmit state */
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#define ICLR_PENDING 0x00000003UL /* Pending state */
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/* The largest number of unique interrupt sources we support.
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* If this needs to ever be larger than 255, you need to change
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* the type of ino_bucket->virt_irq as appropriate.
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*
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* ino_bucket->virt_irq allocation is made during {sun4v_,}build_irq().
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*/
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#define NR_IRQS 255
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extern void irq_install_pre_handler(int virt_irq,
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void (*func)(unsigned int, void *, void *),
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void *arg1, void *arg2);
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#define irq_canonicalize(irq) (irq)
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extern unsigned int build_irq(int inofixup, unsigned long iclr, unsigned long imap);
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extern unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino);
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extern unsigned int sun4v_build_virq(u32 devhandle, unsigned int devino);
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extern unsigned int sun4v_build_msi(u32 devhandle, unsigned int *virt_irq_p,
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unsigned int msi_devino_start,
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unsigned int msi_devino_end);
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extern void sun4v_destroy_msi(unsigned int virt_irq);
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extern unsigned int sun4u_build_msi(u32 portid, unsigned int *virt_irq_p,
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unsigned int msi_devino_start,
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unsigned int msi_devino_end,
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unsigned long imap_base,
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unsigned long iclr_base);
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extern void sun4u_destroy_msi(unsigned int virt_irq);
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extern unsigned int sbus_build_irq(void *sbus, unsigned int ino);
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extern unsigned char virt_irq_alloc(unsigned int real_irq);
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#ifdef CONFIG_PCI_MSI
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extern void virt_irq_free(unsigned int virt_irq);
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#endif
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extern void fixup_irqs(void);
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static __inline__ void set_softint(unsigned long bits)
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{
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__asm__ __volatile__("wr %0, 0x0, %%set_softint"
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: /* No outputs */
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: "r" (bits));
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}
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static __inline__ void clear_softint(unsigned long bits)
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{
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__asm__ __volatile__("wr %0, 0x0, %%clear_softint"
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: /* No outputs */
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: "r" (bits));
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}
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static __inline__ unsigned long get_softint(void)
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{
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unsigned long retval;
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__asm__ __volatile__("rd %%softint, %0"
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: "=r" (retval));
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return retval;
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}
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#endif
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