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[SPARC64]: Program IRQ registers correctly on sun4v.

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Need to use hypervisor calls instead of direct register
accesses.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2006-02-13 18:22:57 -08:00
parent e3999574b4
commit 10951ee610
1 changed files with 47 additions and 24 deletions
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71
arch/sparc64/kernel/irq.c
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@ -152,7 +152,10 @@ void enable_irq(unsigned int irq)
preempt_disable();
if (tlb_type == hypervisor) {
/* XXX SUN4V: implement me... XXX */
int cpu = hard_smp_processor_id();
sun4v_intr_settarget(irq, cpu);
sun4v_intr_setenabled(irq, HV_INTR_ENABLED);
} else {
if (tlb_type == cheetah || tlb_type == cheetah_plus) {
unsigned long ver;
@ -210,16 +213,20 @@ void disable_irq(unsigned int irq)
imap = bucket->imap;
if (imap != 0UL) {
u32 tmp;
if (tlb_type == hypervisor) {
sun4v_intr_setenabled(irq, HV_INTR_DISABLED);
} else {
u32 tmp;
/* NOTE: We do not want to futz with the IRQ clear registers
* and move the state to IDLE, the SCSI code does call
* disable_irq() to assure atomicity in the queue cmd
* SCSI adapter driver code. Thus we'd lose interrupts.
*/
tmp = upa_readl(imap);
tmp &= ~IMAP_VALID;
upa_writel(tmp, imap);
/* NOTE: We do not want to futz with the IRQ clear registers
* and move the state to IDLE, the SCSI code does call
* disable_irq() to assure atomicity in the queue cmd
* SCSI adapter driver code. Thus we'd lose interrupts.
*/
tmp = upa_readl(imap);
tmp &= ~IMAP_VALID;
upa_writel(tmp, imap);
}
}
}
@ -257,6 +264,8 @@ unsigned int build_irq(int pil, int inofixup, unsigned long iclr, unsigned long
return __irq(&pil0_dummy_bucket);
}
BUG_ON(tlb_type == hypervisor);
/* RULE: Both must be specified in all other cases. */
if (iclr == 0UL || imap == 0UL) {
prom_printf("Invalid build_irq %d %d %016lx %016lx\n",
@ -633,10 +642,16 @@ static void process_bucket(int irq, struct ino_bucket *bp, struct pt_regs *regs)
break;
}
if (bp->pil != 0) {
upa_writel(ICLR_IDLE, bp->iclr);
/* Test and add entropy */
if (random & SA_SAMPLE_RANDOM)
add_interrupt_randomness(irq);
if (tlb_type == hypervisor) {
unsigned int irq = __irq(bp);
sun4v_intr_setstate(irq, HV_INTR_STATE_IDLE);
} else {
upa_writel(ICLR_IDLE, bp->iclr);
/* Test and add entropy */
if (random & SA_SAMPLE_RANDOM)
add_interrupt_randomness(irq);
}
}
out:
bp->flags &= ~IBF_INPROGRESS;
@ -769,24 +784,32 @@ static int retarget_one_irq(struct irqaction *p, int goal_cpu)
{
struct ino_bucket *bucket = get_ino_in_irqaction(p) + ivector_table;
unsigned long imap = bucket->imap;
unsigned int tid;
while (!cpu_online(goal_cpu)) {
if (++goal_cpu >= NR_CPUS)
goal_cpu = 0;
}
if (tlb_type == cheetah || tlb_type == cheetah_plus) {
tid = goal_cpu << 26;
tid &= IMAP_AID_SAFARI;
} else if (this_is_starfire == 0) {
tid = goal_cpu << 26;
tid &= IMAP_TID_UPA;
if (tlb_type == hypervisor) {
unsigned int irq = __irq(bucket);
sun4v_intr_settarget(irq, goal_cpu);
sun4v_intr_setenabled(irq, HV_INTR_ENABLED);
} else {
tid = (starfire_translate(imap, goal_cpu) << 26);
tid &= IMAP_TID_UPA;
unsigned int tid;
if (tlb_type == cheetah || tlb_type == cheetah_plus) {
tid = goal_cpu << 26;
tid &= IMAP_AID_SAFARI;
} else if (this_is_starfire == 0) {
tid = goal_cpu << 26;
tid &= IMAP_TID_UPA;
} else {
tid = (starfire_translate(imap, goal_cpu) << 26);
tid &= IMAP_TID_UPA;
}
upa_writel(tid | IMAP_VALID, imap);
}
upa_writel(tid | IMAP_VALID, imap);
do {
if (++goal_cpu >= NR_CPUS)