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x86/msi: Create named irq domains 

Use the fwnode to create named irq domains so diagnosis works.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Keith Busch <keith.busch@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Christoph Hellwig <hch@lst.de>
Link: http://lkml.kernel.org/r/20170619235444.299024560@linutronix.de
This commit is contained in:
Thomas Gleixner 2017-06-20 01:37:14 +02:00
parent 0323b96904
commit f8f37ca789
1 changed files with 34 additions and 10 deletions
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44
arch/x86/kernel/apic/msi.c
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@ -136,13 +136,20 @@ static struct msi_domain_info pci_msi_domain_info = {
.handler_name = "edge",
};
void arch_init_msi_domain(struct irq_domain *parent)
void __init arch_init_msi_domain(struct irq_domain *parent)
{
struct fwnode_handle *fn;
if (disable_apic)
return;
msi_default_domain = pci_msi_create_irq_domain(NULL,
&pci_msi_domain_info, parent);
fn = irq_domain_alloc_named_fwnode("PCI-MSI");
if (fn) {
msi_default_domain =
pci_msi_create_irq_domain(fn, &pci_msi_domain_info,
parent);
irq_domain_free_fwnode(fn);
}
if (!msi_default_domain)
pr_warn("failed to initialize irqdomain for MSI/MSI-x.\n");
}
@ -230,13 +237,20 @@ static struct irq_domain *dmar_get_irq_domain(void)
{
static struct irq_domain *dmar_domain;
static DEFINE_MUTEX(dmar_lock);
struct fwnode_handle *fn;
mutex_lock(&dmar_lock);
if (dmar_domain == NULL)
dmar_domain = msi_create_irq_domain(NULL, &dmar_msi_domain_info,
x86_vector_domain);
mutex_unlock(&dmar_lock);
if (dmar_domain)
goto out;
fn = irq_domain_alloc_named_fwnode("DMAR-MSI");
if (fn) {
dmar_domain = msi_create_irq_domain(fn, &dmar_msi_domain_info,
x86_vector_domain);
irq_domain_free_fwnode(fn);
}
out:
mutex_unlock(&dmar_lock);
return dmar_domain;
}
@ -326,9 +340,10 @@ static struct msi_domain_info hpet_msi_domain_info = {
struct irq_domain *hpet_create_irq_domain(int hpet_id)
{
struct irq_domain *parent;
struct irq_alloc_info info;
struct msi_domain_info *domain_info;
struct irq_domain *parent, *d;
struct irq_alloc_info info;
struct fwnode_handle *fn;
if (x86_vector_domain == NULL)
return NULL;
@ -349,7 +364,16 @@ struct irq_domain *hpet_create_irq_domain(int hpet_id)
else
hpet_msi_controller.name = "IR-HPET-MSI";
return msi_create_irq_domain(NULL, domain_info, parent);
fn = irq_domain_alloc_named_id_fwnode(hpet_msi_controller.name,
hpet_id);
if (!fn) {
kfree(domain_info);
return NULL;
}
d = msi_create_irq_domain(fn, domain_info, parent);
irq_domain_free_fwnode(fn);
return d;
}
int hpet_assign_irq(struct irq_domain *domain, struct hpet_dev *dev,