diff options
Diffstat (limited to 'include/linux/msi.h')
| -rw-r--r-- | include/linux/msi.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/msi.h b/include/linux/msi.h index 15dd71817996..cdb14a1ef268 100644 --- a/include/linux/msi.h +++ b/include/linux/msi.h @@ -48,6 +48,10 @@ typedef struct arch_msi_msg_data { } __attribute__ ((packed)) arch_msi_msg_data_t; #endif +#ifndef arch_is_isolated_msi +#define arch_is_isolated_msi() false +#endif + /** * msi_msg - Representation of a MSI message * @address_lo: Low 32 bits of msi message address @@ -651,6 +655,19 @@ int platform_msi_device_domain_alloc(struct irq_domain *domain, unsigned int vir void platform_msi_device_domain_free(struct irq_domain *domain, unsigned int virq, unsigned int nvec); void *platform_msi_get_host_data(struct irq_domain *domain); + +bool msi_device_has_isolated_msi(struct device *dev); +#else /* CONFIG_GENERIC_MSI_IRQ */ +static inline bool msi_device_has_isolated_msi(struct device *dev) +{ + /* + * Arguably if the platform does not enable MSI support then it has + * "isolated MSI", as an interrupt controller that cannot receive MSIs + * is inherently isolated by our definition. The default definition for + * arch_is_isolated_msi() is conservative and returns false anyhow. + */ + return arch_is_isolated_msi(); +} #endif /* CONFIG_GENERIC_MSI_IRQ */ /* PCI specific interfaces */ |