diff options
| author | David S. Miller <davem@sunset.davemloft.net> | 2007-07-14 03:16:13 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-07-16 04:05:11 -0700 |
| commit | b53bcb6799f8f2c0f385f24a8bb054f142c7d83a (patch) | |
| tree | fd1ec8145337937769c484c843047a23f34187a4 /arch/sparc64 | |
| parent | bd0e11ff221d929b2b711ce3e5712e097e9dd1d8 (diff) | |
[SPARC64]: Add ->set_affinity IRQ handlers.
dr-cpu unconfigure requests will walk throught he enabled
IRQs and trigger ->set_affinity so that the going-down
cpu no longer has INOs targetted to it.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64')
| -rw-r--r-- | arch/sparc64/kernel/irq.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/arch/sparc64/kernel/irq.c b/arch/sparc64/kernel/irq.c index 634194e7d2d..a1c916f35ba 100644 --- a/arch/sparc64/kernel/irq.c +++ b/arch/sparc64/kernel/irq.c @@ -293,6 +293,11 @@ static void sun4u_irq_enable(unsigned int virt_irq) } } +static void sun4u_set_affinity(unsigned int virt_irq, cpumask_t mask) +{ + sun4u_irq_enable(virt_irq); +} + static void sun4u_irq_disable(unsigned int virt_irq) { struct irq_handler_data *data = get_irq_chip_data(virt_irq); @@ -344,6 +349,24 @@ static void sun4v_irq_enable(unsigned int virt_irq) } } +static void sun4v_set_affinity(unsigned int virt_irq, cpumask_t mask) +{ + struct ino_bucket *bucket = virt_irq_to_bucket(virt_irq); + unsigned int ino = bucket - &ivector_table[0]; + + if (likely(bucket)) { + unsigned long cpuid; + int err; + + cpuid = irq_choose_cpu(virt_irq); + + err = sun4v_intr_settarget(ino, cpuid); + if (err != HV_EOK) + printk("sun4v_intr_settarget(%x,%lu): err(%d)\n", + ino, cpuid, err); + } +} + static void sun4v_irq_disable(unsigned int virt_irq) { struct ino_bucket *bucket = virt_irq_to_bucket(virt_irq); @@ -426,6 +449,28 @@ static void sun4v_virq_enable(unsigned int virt_irq) } } +static void sun4v_virt_set_affinity(unsigned int virt_irq, cpumask_t mask) +{ + struct ino_bucket *bucket = virt_irq_to_bucket(virt_irq); + unsigned int ino = bucket - &ivector_table[0]; + + if (likely(bucket)) { + unsigned long cpuid, dev_handle, dev_ino; + int err; + + cpuid = irq_choose_cpu(virt_irq); + + dev_handle = ino & IMAP_IGN; + dev_ino = ino & IMAP_INO; + + err = sun4v_vintr_set_target(dev_handle, dev_ino, cpuid); + if (err != HV_EOK) + printk("sun4v_vintr_set_target(%lx,%lx,%lu): " + "err(%d)\n", + dev_handle, dev_ino, cpuid, err); + } +} + static void sun4v_virq_disable(unsigned int virt_irq) { struct ino_bucket *bucket = virt_irq_to_bucket(virt_irq); @@ -489,6 +534,7 @@ static struct irq_chip sun4u_irq = { .enable = sun4u_irq_enable, .disable = sun4u_irq_disable, .end = sun4u_irq_end, + .set_affinity = sun4u_set_affinity, }; static struct irq_chip sun4u_irq_ack = { @@ -497,6 +543,7 @@ static struct irq_chip sun4u_irq_ack = { .disable = sun4u_irq_disable, .ack = run_pre_handler, .end = sun4u_irq_end, + .set_affinity = sun4u_set_affinity, }; static struct irq_chip sun4v_irq = { @@ -504,6 +551,7 @@ static struct irq_chip sun4v_irq = { .enable = sun4v_irq_enable, .disable = sun4v_irq_disable, .end = sun4v_irq_end, + .set_affinity = sun4v_set_affinity, }; static struct irq_chip sun4v_irq_ack = { @@ -512,6 +560,7 @@ static struct irq_chip sun4v_irq_ack = { .disable = sun4v_irq_disable, .ack = run_pre_handler, .end = sun4v_irq_end, + .set_affinity = sun4v_set_affinity, }; #ifdef CONFIG_PCI_MSI @@ -523,6 +572,7 @@ static struct irq_chip sun4v_msi = { .disable = sun4v_msi_disable, .ack = run_pre_handler, .end = sun4v_irq_end, + .set_affinity = sun4v_set_affinity, }; #endif @@ -531,6 +581,7 @@ static struct irq_chip sun4v_virq = { .enable = sun4v_virq_enable, .disable = sun4v_virq_disable, .end = sun4v_virq_end, + .set_affinity = sun4v_virt_set_affinity, }; static struct irq_chip sun4v_virq_ack = { @@ -539,6 +590,7 @@ static struct irq_chip sun4v_virq_ack = { .disable = sun4v_virq_disable, .ack = run_pre_handler, .end = sun4v_virq_end, + .set_affinity = sun4v_virt_set_affinity, }; void irq_install_pre_handler(int virt_irq, |