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Subject[PATCH 2/2] PCI: generic: Add set_msi_parent callback
Date
From: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>

This patch implement set_msi_parent callback for PCI generic host controller.

Cc: Bjorn Helgass <bhelgaas@google.com>
Cc: Liviu Dudau <liviu.dudau@arm.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
---
drivers/pci/host/pci-host-generic.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)

diff --git a/drivers/pci/host/pci-host-generic.c b/drivers/pci/host/pci-host-generic.c
index 036ab1b..f9bb97a 100644
--- a/drivers/pci/host/pci-host-generic.c
+++ b/drivers/pci/host/pci-host-generic.c
@@ -42,6 +42,7 @@ struct gen_pci {
struct pci_host_bridge host;
struct gen_pci_cfg_windows cfg;
struct list_head resources;
+ struct msi_chip *mchip;
};

#ifdef CONFIG_ARM
@@ -128,9 +129,19 @@ static int gen_pci_config_write(struct pci_bus *bus, unsigned int devfn,
return PCIBIOS_SUCCESSFUL;
}

+static int gen_pci_set_msi_parent(struct pci_bus *bus)
+{
+ struct gen_pci *pci = bus_to_gen_pci(bus);
+
+ bus->msi = pci->mchip;
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
static struct pci_ops gen_pci_ops = {
.read = gen_pci_config_read,
.write = gen_pci_config_write,
+ .set_msi_parent = gen_pci_set_msi_parent,
};

static const struct of_device_id gen_pci_of_match[] = {
@@ -313,6 +324,9 @@ static int gen_pci_probe(struct platform_device *pdev)
return err;
}

+ pci->mchip = of_pci_find_msi_chip_by_node(of_parse_phandle(np,
+ "msi-parent", 0));
+
#ifdef CONFIG_ARM
pci_common_init_dev(dev, &hw);
#else
--
1.9.3


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