On Mon, Dec 08, 2014 at 08:12:20PM +0000, Marc Zyngier wrote:
> In order to populate the PHB msi_domain, use the "msi-parent"
> attribute to lookup a corresponding irq domain. If found,
> this is our MSI domain.
>
> This gets plugged into the core PCI code.
>
> Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx>
> ---
> drivers/pci/of.c | 15 +++++++++++++++
> drivers/pci/probe.c | 1 +
> include/linux/pci.h | 2 ++
> 3 files changed, 18 insertions(+)
>
> diff --git a/drivers/pci/of.c b/drivers/pci/of.c
> index f092993..d8d1274 100644
> --- a/drivers/pci/of.c
> +++ b/drivers/pci/of.c
> @@ -9,6 +9,7 @@
> * 2 of the License, or (at your option) any later version.
> */
>
> +#include <linux/irqdomain.h>
> #include <linux/kernel.h>
> #include <linux/pci.h>
> #include <linux/of.h>
> @@ -59,3 +60,17 @@ struct device_node * __weak pcibios_get_phb_of_node(struct pci_bus *bus)
> return of_node_get(bus->bridge->parent->of_node);
> return NULL;
> }
> +
> +void pci_set_phb_of_msi_domain(struct pci_bus *bus)
Same "phb" comment as before (also in the changelog above).
> +{
> +#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN
> + struct device_node *np;
> +
> + if (!bus->dev.of_node)
> + return;
> + np = of_parse_phandle(bus->dev.of_node, "msi-parent", 0);
> + if (!np)
> + return;
> + dev_set_msi_domain(&bus->dev, irq_find_host(np));
> +#endif
> +}
> diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
> index d1009a2..65600e5 100644
> --- a/drivers/pci/probe.c
> +++ b/drivers/pci/probe.c
> @@ -672,6 +672,7 @@ static void pci_set_bus_speed(struct pci_bus *bus)
>
> void __weak pcibios_set_phb_msi_domain(struct pci_bus *bus)
> {
> + pci_set_phb_of_msi_domain(bus);
> }
>
> static void pci_set_bus_msi_domain(struct pci_bus *bus)
> diff --git a/include/linux/pci.h b/include/linux/pci.h
> index 3266764..6a9713f 100644
> --- a/include/linux/pci.h
> +++ b/include/linux/pci.h
> @@ -1825,6 +1825,7 @@ void pci_set_of_node(struct pci_dev *dev);
> void pci_release_of_node(struct pci_dev *dev);
> void pci_set_bus_of_node(struct pci_bus *bus);
> void pci_release_bus_of_node(struct pci_bus *bus);
> +void pci_set_phb_of_msi_domain(struct pci_bus *bus);
>
> /* Arch may override this (weak) */
> struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus);
> @@ -1845,6 +1846,7 @@ static inline void pci_set_of_node(struct pci_dev *dev) { }
> static inline void pci_release_of_node(struct pci_dev *dev) { }
> static inline void pci_set_bus_of_node(struct pci_bus *bus) { }
> static inline void pci_release_bus_of_node(struct pci_bus *bus) { }
> +static inline void pci_set_phb_of_msi_domain(struct pci_bus *bus) {}
Add a space between the braces to match the others.
> #endif /* CONFIG_OF */
>
> #ifdef CONFIG_EEH
> --
> 2.1.3
>
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