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Diffstat (limited to 'arch/sparc/kernel/irq_64.c')
-rw-r--r--arch/sparc/kernel/irq_64.c153
1 files changed, 75 insertions, 78 deletions
diff --git a/arch/sparc/kernel/irq_64.c b/arch/sparc/kernel/irq_64.c
index f356e4c..eb16e3b 100644
--- a/arch/sparc/kernel/irq_64.c
+++ b/arch/sparc/kernel/irq_64.c
@@ -82,7 +82,7 @@ static void bucket_clear_chain_pa(unsigned long bucket_pa)
"i" (ASI_PHYS_USE_EC));
}
-static unsigned int bucket_get_virt_irq(unsigned long bucket_pa)
+static unsigned int bucket_get_irq(unsigned long bucket_pa)
{
unsigned int ret;
@@ -90,21 +90,20 @@ static unsigned int bucket_get_virt_irq(unsigned long bucket_pa)
: "=&r" (ret)
: "r" (bucket_pa +
offsetof(struct ino_bucket,
- __virt_irq)),
+ __irq)),
"i" (ASI_PHYS_USE_EC));
return ret;
}
-static void bucket_set_virt_irq(unsigned long bucket_pa,
- unsigned int virt_irq)
+static void bucket_set_irq(unsigned long bucket_pa, unsigned int irq)
{
__asm__ __volatile__("stwa %0, [%1] %2"
: /* no outputs */
- : "r" (virt_irq),
+ : "r" (irq),
"r" (bucket_pa +
offsetof(struct ino_bucket,
- __virt_irq)),
+ __irq)),
"i" (ASI_PHYS_USE_EC));
}
@@ -114,50 +113,49 @@ static struct {
unsigned int dev_handle;
unsigned int dev_ino;
unsigned int in_use;
-} virt_irq_table[NR_IRQS];
-static DEFINE_SPINLOCK(virt_irq_alloc_lock);
+} irq_table[NR_IRQS];
+static DEFINE_SPINLOCK(irq_alloc_lock);
-unsigned char virt_irq_alloc(unsigned int dev_handle,
- unsigned int dev_ino)
+unsigned char irq_alloc(unsigned int dev_handle, unsigned int dev_ino)
{
unsigned long flags;
unsigned char ent;
BUILD_BUG_ON(NR_IRQS >= 256);
- spin_lock_irqsave(&virt_irq_alloc_lock, flags);
+ spin_lock_irqsave(&irq_alloc_lock, flags);
for (ent = 1; ent < NR_IRQS; ent++) {
- if (!virt_irq_table[ent].in_use)
+ if (!irq_table[ent].in_use)
break;
}
if (ent >= NR_IRQS) {
printk(KERN_ERR "IRQ: Out of virtual IRQs.\n");
ent = 0;
} else {
- virt_irq_table[ent].dev_handle = dev_handle;
- virt_irq_table[ent].dev_ino = dev_ino;
- virt_irq_table[ent].in_use = 1;
+ irq_table[ent].dev_handle = dev_handle;
+ irq_table[ent].dev_ino = dev_ino;
+ irq_table[ent].in_use = 1;
}
- spin_unlock_irqrestore(&virt_irq_alloc_lock, flags);
+ spin_unlock_irqrestore(&irq_alloc_lock, flags);
return ent;
}
#ifdef CONFIG_PCI_MSI
-void virt_irq_free(unsigned int virt_irq)
+void irq_free(unsigned int irq)
{
unsigned long flags;
- if (virt_irq >= NR_IRQS)
+ if (irq >= NR_IRQS)
return;
- spin_lock_irqsave(&virt_irq_alloc_lock, flags);
+ spin_lock_irqsave(&irq_alloc_lock, flags);
- virt_irq_table[virt_irq].in_use = 0;
+ irq_table[irq].in_use = 0;
- spin_unlock_irqrestore(&virt_irq_alloc_lock, flags);
+ spin_unlock_irqrestore(&irq_alloc_lock, flags);
}
#endif
@@ -253,25 +251,25 @@ struct irq_handler_data {
};
#ifdef CONFIG_SMP
-static int irq_choose_cpu(unsigned int virt_irq, const struct cpumask *affinity)
+static int irq_choose_cpu(unsigned int irq, const struct cpumask *affinity)
{
cpumask_t mask;
int cpuid;
cpumask_copy(&mask, affinity);
if (cpus_equal(mask, cpu_online_map)) {
- cpuid = map_to_cpu(virt_irq);
+ cpuid = map_to_cpu(irq);
} else {
cpumask_t tmp;
cpus_and(tmp, cpu_online_map, mask);
- cpuid = cpus_empty(tmp) ? map_to_cpu(virt_irq) : first_cpu(tmp);
+ cpuid = cpus_empty(tmp) ? map_to_cpu(irq) : first_cpu(tmp);
}
return cpuid;
}
#else
-#define irq_choose_cpu(virt_irq, affinity) \
+#define irq_choose_cpu(irq, affinity) \
real_hard_smp_processor_id()
#endif
@@ -357,7 +355,7 @@ static void sun4u_irq_eoi(struct irq_data *data)
static void sun4v_irq_enable(struct irq_data *data)
{
- unsigned int ino = virt_irq_table[data->irq].dev_ino;
+ unsigned int ino = irq_table[data->irq].dev_ino;
unsigned long cpuid = irq_choose_cpu(data->irq, data->affinity);
int err;
@@ -378,7 +376,7 @@ static void sun4v_irq_enable(struct irq_data *data)
static int sun4v_set_affinity(struct irq_data *data,
const struct cpumask *mask, bool force)
{
- unsigned int ino = virt_irq_table[data->irq].dev_ino;
+ unsigned int ino = irq_table[data->irq].dev_ino;
unsigned long cpuid = irq_choose_cpu(data->irq, mask);
int err;
@@ -392,7 +390,7 @@ static int sun4v_set_affinity(struct irq_data *data,
static void sun4v_irq_disable(struct irq_data *data)
{
- unsigned int ino = virt_irq_table[data->irq].dev_ino;
+ unsigned int ino = irq_table[data->irq].dev_ino;
int err;
err = sun4v_intr_setenabled(ino, HV_INTR_DISABLED);
@@ -403,7 +401,7 @@ static void sun4v_irq_disable(struct irq_data *data)
static void sun4v_irq_eoi(struct irq_data *data)
{
- unsigned int ino = virt_irq_table[data->irq].dev_ino;
+ unsigned int ino = irq_table[data->irq].dev_ino;
struct irq_desc *desc = irq_desc + data->irq;
int err;
@@ -423,8 +421,8 @@ static void sun4v_virq_enable(struct irq_data *data)
cpuid = irq_choose_cpu(data->irq, data->affinity);
- dev_handle = virt_irq_table[data->irq].dev_handle;
- dev_ino = virt_irq_table[data->irq].dev_ino;
+ dev_handle = irq_table[data->irq].dev_handle;
+ dev_ino = irq_table[data->irq].dev_ino;
err = sun4v_vintr_set_target(dev_handle, dev_ino, cpuid);
if (err != HV_EOK)
@@ -453,8 +451,8 @@ static int sun4v_virt_set_affinity(struct irq_data *data,
cpuid = irq_choose_cpu(data->irq, mask);
- dev_handle = virt_irq_table[data->irq].dev_handle;
- dev_ino = virt_irq_table[data->irq].dev_ino;
+ dev_handle = irq_table[data->irq].dev_handle;
+ dev_ino = irq_table[data->irq].dev_ino;
err = sun4v_vintr_set_target(dev_handle, dev_ino, cpuid);
if (err != HV_EOK)
@@ -470,8 +468,8 @@ static void sun4v_virq_disable(struct irq_data *data)
unsigned long dev_handle, dev_ino;
int err;
- dev_handle = virt_irq_table[data->irq].dev_handle;
- dev_ino = virt_irq_table[data->irq].dev_ino;
+ dev_handle = irq_table[data->irq].dev_handle;
+ dev_ino = irq_table[data->irq].dev_ino;
err = sun4v_vintr_set_valid(dev_handle, dev_ino,
HV_INTR_DISABLED);
@@ -490,8 +488,8 @@ static void sun4v_virq_eoi(struct irq_data *data)
if (unlikely(desc->status & (IRQ_DISABLED|IRQ_INPROGRESS)))
return;
- dev_handle = virt_irq_table[data->irq].dev_handle;
- dev_ino = virt_irq_table[data->irq].dev_ino;
+ dev_handle = irq_table[data->irq].dev_handle;
+ dev_ino = irq_table[data->irq].dev_ino;
err = sun4v_vintr_set_state(dev_handle, dev_ino,
HV_INTR_STATE_IDLE);
@@ -525,23 +523,22 @@ static struct irq_chip sun4v_virq = {
.irq_set_affinity = sun4v_virt_set_affinity,
};
-static void pre_flow_handler(unsigned int virt_irq,
- struct irq_desc *desc)
+static void pre_flow_handler(unsigned int irq, struct irq_desc *desc)
{
- struct irq_handler_data *handler_data = get_irq_data(virt_irq);
- unsigned int ino = virt_irq_table[virt_irq].dev_ino;
+ struct irq_handler_data *handler_data = get_irq_data(irq);
+ unsigned int ino = irq_table[irq].dev_ino;
handler_data->pre_handler(ino, handler_data->arg1, handler_data->arg2);
- handle_fasteoi_irq(virt_irq, desc);
+ handle_fasteoi_irq(irq, desc);
}
-void irq_install_pre_handler(int virt_irq,
+void irq_install_pre_handler(int irq,
void (*func)(unsigned int, void *, void *),
void *arg1, void *arg2)
{
- struct irq_handler_data *handler_data = get_irq_data(virt_irq);
- struct irq_desc *desc = irq_desc + virt_irq;
+ struct irq_handler_data *handler_data = get_irq_data(irq);
+ struct irq_desc *desc = irq_desc + irq;
handler_data->pre_handler = func;
handler_data->arg1 = arg1;
@@ -554,24 +551,24 @@ unsigned int build_irq(int inofixup, unsigned long iclr, unsigned long imap)
{
struct ino_bucket *bucket;
struct irq_handler_data *handler_data;
- unsigned int virt_irq;
+ unsigned int irq;
int ino;
BUG_ON(tlb_type == hypervisor);
ino = (upa_readq(imap) & (IMAP_IGN | IMAP_INO)) + inofixup;
bucket = &ivector_table[ino];
- virt_irq = bucket_get_virt_irq(__pa(bucket));
- if (!virt_irq) {
- virt_irq = virt_irq_alloc(0, ino);
- bucket_set_virt_irq(__pa(bucket), virt_irq);
- set_irq_chip_and_handler_name(virt_irq,
+ irq = bucket_get_irq(__pa(bucket));
+ if (!irq) {
+ irq = irq_alloc(0, ino);
+ bucket_set_irq(__pa(bucket), irq);
+ set_irq_chip_and_handler_name(irq,
&sun4u_irq,
handle_fasteoi_irq,
"IVEC");
}
- handler_data = get_irq_data(virt_irq);
+ handler_data = get_irq_data(irq);
if (unlikely(handler_data))
goto out;
@@ -580,13 +577,13 @@ unsigned int build_irq(int inofixup, unsigned long iclr, unsigned long imap)
prom_printf("IRQ: kzalloc(irq_handler_data) failed.\n");
prom_halt();
}
- set_irq_data(virt_irq, handler_data);
+ set_irq_data(irq, handler_data);
handler_data->imap = imap;
handler_data->iclr = iclr;
out:
- return virt_irq;
+ return irq;
}
static unsigned int sun4v_build_common(unsigned long sysino,
@@ -594,21 +591,21 @@ static unsigned int sun4v_build_common(unsigned long sysino,
{
struct ino_bucket *bucket;
struct irq_handler_data *handler_data;
- unsigned int virt_irq;
+ unsigned int irq;
BUG_ON(tlb_type != hypervisor);
bucket = &ivector_table[sysino];
- virt_irq = bucket_get_virt_irq(__pa(bucket));
- if (!virt_irq) {
- virt_irq = virt_irq_alloc(0, sysino);
- bucket_set_virt_irq(__pa(bucket), virt_irq);
- set_irq_chip_and_handler_name(virt_irq, chip,
+ irq = bucket_get_irq(__pa(bucket));
+ if (!irq) {
+ irq = irq_alloc(0, sysino);
+ bucket_set_irq(__pa(bucket), irq);
+ set_irq_chip_and_handler_name(irq, chip,
handle_fasteoi_irq,
"IVEC");
}
- handler_data = get_irq_data(virt_irq);
+ handler_data = get_irq_data(irq);
if (unlikely(handler_data))
goto out;
@@ -617,7 +614,7 @@ static unsigned int sun4v_build_common(unsigned long sysino,
prom_printf("IRQ: kzalloc(irq_handler_data) failed.\n");
prom_halt();
}
- set_irq_data(virt_irq, handler_data);
+ set_irq_data(irq, handler_data);
/* Catch accidental accesses to these things. IMAP/ICLR handling
* is done by hypervisor calls on sun4v platforms, not by direct
@@ -627,7 +624,7 @@ static unsigned int sun4v_build_common(unsigned long sysino,
handler_data->iclr = ~0UL;
out:
- return virt_irq;
+ return irq;
}
unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino)
@@ -643,7 +640,7 @@ unsigned int sun4v_build_virq(u32 devhandle, unsigned int devino)
unsigned long hv_err, cookie;
struct ino_bucket *bucket;
struct irq_desc *desc;
- unsigned int virt_irq;
+ unsigned int irq;
bucket = kzalloc(sizeof(struct ino_bucket), GFP_ATOMIC);
if (unlikely(!bucket))
@@ -660,10 +657,10 @@ unsigned int sun4v_build_virq(u32 devhandle, unsigned int devino)
((unsigned long) bucket +
sizeof(struct ino_bucket)));
- virt_irq = virt_irq_alloc(devhandle, devino);
- bucket_set_virt_irq(__pa(bucket), virt_irq);
+ irq = irq_alloc(devhandle, devino);
+ bucket_set_irq(__pa(bucket), irq);
- set_irq_chip_and_handler_name(virt_irq, &sun4v_virq,
+ set_irq_chip_and_handler_name(irq, &sun4v_virq,
handle_fasteoi_irq,
"IVEC");
@@ -675,10 +672,10 @@ unsigned int sun4v_build_virq(u32 devhandle, unsigned int devino)
* especially wrt. locking, we do not let request_irq() enable
* the interrupt.
*/
- desc = irq_desc + virt_irq;
+ desc = irq_desc + irq;
desc->status |= IRQ_NOAUTOEN;
- set_irq_data(virt_irq, handler_data);
+ set_irq_data(irq, handler_data);
/* Catch accidental accesses to these things. IMAP/ICLR handling
* is done by hypervisor calls on sun4v platforms, not by direct
@@ -695,18 +692,18 @@ unsigned int sun4v_build_virq(u32 devhandle, unsigned int devino)
prom_halt();
}
- return virt_irq;
+ return irq;
}
-void ack_bad_irq(unsigned int virt_irq)
+void ack_bad_irq(unsigned int irq)
{
- unsigned int ino = virt_irq_table[virt_irq].dev_ino;
+ unsigned int ino = irq_table[irq].dev_ino;
if (!ino)
ino = 0xdeadbeef;
- printk(KERN_CRIT "Unexpected IRQ from ino[%x] virt_irq[%u]\n",
- ino, virt_irq);
+ printk(KERN_CRIT "Unexpected IRQ from ino[%x] irq[%u]\n",
+ ino, irq);
}
void *hardirq_stack[NR_CPUS];
@@ -739,16 +736,16 @@ void __irq_entry handler_irq(int pil, struct pt_regs *regs)
while (bucket_pa) {
struct irq_desc *desc;
unsigned long next_pa;
- unsigned int virt_irq;
+ unsigned int irq;
next_pa = bucket_get_chain_pa(bucket_pa);
- virt_irq = bucket_get_virt_irq(bucket_pa);
+ irq = bucket_get_irq(bucket_pa);
bucket_clear_chain_pa(bucket_pa);
- desc = irq_desc + virt_irq;
+ desc = irq_desc + irq;
if (!(desc->status & IRQ_DISABLED))
- desc->handle_irq(virt_irq, desc);
+ desc->handle_irq(irq, desc);
bucket_pa = next_pa;
}
generated by cgit v0.10.2 at 2024-06-30 21:00:37 (GMT)