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| author | Marc Zyngier <marc.zyngier@arm.com> | 2017-03-29 15:13:07 +0100 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2017-04-07 10:52:21 +0100 |
| commit | c2c8661fd717e2f29cd099ed213b565830b5cbcc (patch) | |
| tree | 724fd72091be139c49bdac4c9b07a2be6bb210a2 /drivers/irqchip | |
| parent | f907c515ffb06e6fd5e74397badd674f3c233418 (diff) | |
| download | linux-c2c8661fd717e2f29cd099ed213b565830b5cbcc.tar.bz2 | |
irqchip/gic-v3-its: Add IORT hook for platform MSI support
Getting hold of the DevID requires us to call iort_pmsi_get_dev_id().
Since iort_pmsi_get_dev_id() may or may not be implemented, we
provide a weak function that acts as a stub.
The weak function will be removed when the ACPI counterpart is
merged.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'drivers/irqchip')
| -rw-r--r-- | drivers/irqchip/irq-gic-v3-its-platform-msi.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/irqchip/irq-gic-v3-its-platform-msi.c b/drivers/irqchip/irq-gic-v3-its-platform-msi.c index e4ba9f4cbd1a..9e9dda33eb17 100644 --- a/drivers/irqchip/irq-gic-v3-its-platform-msi.c +++ b/drivers/irqchip/irq-gic-v3-its-platform-msi.c @@ -48,6 +48,11 @@ static int of_pmsi_get_dev_id(struct irq_domain *domain, struct device *dev, return ret; } +int __weak iort_pmsi_get_dev_id(struct device *dev, u32 *dev_id) +{ + return -1; +} + static int its_pmsi_prepare(struct irq_domain *domain, struct device *dev, int nvec, msi_alloc_info_t *info) { @@ -57,7 +62,10 @@ static int its_pmsi_prepare(struct irq_domain *domain, struct device *dev, msi_info = msi_get_domain_info(domain->parent); - ret = of_pmsi_get_dev_id(domain, dev, &dev_id); + if (dev->of_node) + ret = of_pmsi_get_dev_id(domain, dev, &dev_id); + else + ret = iort_pmsi_get_dev_id(dev, &dev_id); if (ret) return ret; |