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[SPARC64]: virt_irq --> bucket mapping no longer necessary

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We used to need this to compute virt_irq --> ino, but that
is no longer necessary.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2007-10-13 23:50:38 -07:00
parent 771823007f
commit 256c1df36b
3 changed files with 10 additions and 14 deletions
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19
arch/sparc64/kernel/irq.c
View File

@ -122,19 +122,16 @@ static void bucket_set_virt_irq(unsigned long bucket_pa,
"i" (ASI_PHYS_USE_EC));
}
#define __irq(bucket) ((unsigned long)(bucket))
#define irq_work_pa(__cpu) &(trap_block[(__cpu)].irq_worklist_pa)
static struct {
unsigned long irq;
unsigned int dev_handle;
unsigned int dev_ino;
unsigned int in_use;
} virt_to_real_irq_table[NR_IRQS];
static DEFINE_SPINLOCK(virt_irq_alloc_lock);
unsigned char virt_irq_alloc(unsigned long real_irq,
unsigned int dev_handle,
unsigned char virt_irq_alloc(unsigned int dev_handle,
unsigned int dev_ino)
{
unsigned long flags;
@ -145,16 +142,16 @@ unsigned char virt_irq_alloc(unsigned long real_irq,
spin_lock_irqsave(&virt_irq_alloc_lock, flags);
for (ent = 1; ent < NR_IRQS; ent++) {
if (!virt_to_real_irq_table[ent].irq)
if (!virt_to_real_irq_table[ent].in_use)
break;
}
if (ent >= NR_IRQS) {
printk(KERN_ERR "IRQ: Out of virtual IRQs.\n");
ent = 0;
} else {
virt_to_real_irq_table[ent].irq = real_irq;
virt_to_real_irq_table[ent].dev_handle = dev_handle;
virt_to_real_irq_table[ent].dev_ino = dev_ino;
virt_to_real_irq_table[ent].in_use = 1;
}
spin_unlock_irqrestore(&virt_irq_alloc_lock, flags);
@ -172,7 +169,7 @@ void virt_irq_free(unsigned int virt_irq)
spin_lock_irqsave(&virt_irq_alloc_lock, flags);
virt_to_real_irq_table[virt_irq].irq = 0;
virt_to_real_irq_table[virt_irq].in_use = 0;
spin_unlock_irqrestore(&virt_irq_alloc_lock, flags);
}
@ -583,7 +580,7 @@ unsigned int build_irq(int inofixup, unsigned long iclr, unsigned long imap)
bucket = &ivector_table[ino];
virt_irq = bucket_get_virt_irq(__pa(bucket));
if (!virt_irq) {
virt_irq = virt_irq_alloc(__irq(bucket), 0, ino);
virt_irq = virt_irq_alloc(0, ino);
bucket_set_virt_irq(__pa(bucket), virt_irq);
set_irq_chip(virt_irq, &sun4u_irq);
}
@ -618,7 +615,7 @@ static unsigned int sun4v_build_common(unsigned long sysino,
bucket = &ivector_table[sysino];
virt_irq = bucket_get_virt_irq(__pa(bucket));
if (!virt_irq) {
virt_irq = virt_irq_alloc(__irq(bucket), 0, sysino);
virt_irq = virt_irq_alloc(0, sysino);
bucket_set_virt_irq(__pa(bucket), virt_irq);
set_irq_chip(virt_irq, chip);
}
@ -666,7 +663,7 @@ unsigned int sun4v_build_virq(u32 devhandle, unsigned int devino)
((unsigned long) bucket +
sizeof(struct ino_bucket)));
virt_irq = virt_irq_alloc(__irq(bucket), devhandle, devino);
virt_irq = virt_irq_alloc(devhandle, devino);
bucket_set_virt_irq(__pa(bucket), virt_irq);
set_irq_chip(virt_irq, &sun4v_virq);

2
arch/sparc64/kernel/pci_msi.c
View File

@ -123,7 +123,7 @@ int sparc64_setup_msi_irq(unsigned int *virt_irq_p,
int msi, err;
u32 msiqid;
*virt_irq_p = virt_irq_alloc(~0, 0, 0);
*virt_irq_p = virt_irq_alloc(0, 0);
err = -ENOMEM;
if (!*virt_irq_p)
goto out_err;

3
include/asm-sparc64/irq.h
View File

@ -59,8 +59,7 @@ extern unsigned int sun4u_build_msi(u32 portid, unsigned int *virt_irq_p,
extern void sun4u_destroy_msi(unsigned int virt_irq);
extern unsigned int sbus_build_irq(void *sbus, unsigned int ino);
extern unsigned char virt_irq_alloc(unsigned long real_irq,
unsigned int dev_handle,
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);