From: Jake Oshins <jakeo@xxxxxxxxxxxxx>
This patch allows a PCI front-end implementation to supply an fwnode_handle
associated with a root PCI bus, optionally. If supplied, the PCI driver
records this.
This patch supports the next patch in the series, which looks up an IRQ domain
through this handle.
Signed-off-by: Jake Oshins <jakeo@xxxxxxxxxxxxx>
---
arch/sparc/kernel/pci.c | 2 +-
drivers/acpi/pci_root.c | 2 +-
drivers/parisc/lba_pci.c | 2 +-
drivers/pci/host/pci-xgene.c | 2 +-
drivers/pci/host/pcie-iproc.c | 3 ++-
drivers/pci/probe.c | 8 +++++---
include/linux/pci.h | 4 +++-
7 files changed, 14 insertions(+), 9 deletions(-)
diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c
index b91d7f1..3d4e9f9 100644
--- a/arch/sparc/kernel/pci.c
+++ b/arch/sparc/kernel/pci.c
@@ -660,7 +660,7 @@ struct pci_bus *pci_scan_one_pbm(struct pci_pbm_info *pbm,
pbm->busn.flags = IORESOURCE_BUS;
pci_add_resource(&resources, &pbm->busn);
bus = pci_create_root_bus(parent, pbm->pci_first_busno, pbm->pci_ops,
- pbm, &resources);
+ pbm, &resources, NULL);
if (!bus) {
printk(KERN_ERR "Failed to create bus for %s\n",
node->full_name);
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index 850d7bf..eab95bc 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -840,7 +840,7 @@ struct pci_bus *acpi_pci_root_create(struct acpi_pci_root *root,
pci_acpi_root_add_resources(info);
pci_add_resource(&info->resources, &root->secondary);
bus = pci_create_root_bus(NULL, busnum, ops->pci_ops,
- sysdata, &info->resources);
+ sysdata, &info->resources, NULL);
if (!bus)
goto out_release_info;
diff --git a/drivers/parisc/lba_pci.c b/drivers/parisc/lba_pci.c
index a32c1f6..a7b9d5c 100644
--- a/drivers/parisc/lba_pci.c
+++ b/drivers/parisc/lba_pci.c
@@ -1567,7 +1567,7 @@ lba_driver_probe(struct parisc_device *dev)
dev->dev.platform_data = lba_dev;
lba_bus = lba_dev->hba.hba_bus =
pci_create_root_bus(&dev->dev, lba_dev->hba.bus_num.start,
- cfg_ops, NULL, &resources);
+ cfg_ops, NULL, &resources, NULL);
if (!lba_bus) {
pci_free_resource_list(&resources);
return 0;
diff --git a/drivers/pci/host/pci-xgene.c b/drivers/pci/host/pci-xgene.c
index ae00ce2..95c20c8 100644
--- a/drivers/pci/host/pci-xgene.c
+++ b/drivers/pci/host/pci-xgene.c
@@ -545,7 +545,7 @@ static int xgene_pcie_probe_bridge(struct platform_device *pdev)
return ret;
bus = pci_create_root_bus(&pdev->dev, 0,
- &xgene_pcie_ops, port, &res);
+ &xgene_pcie_ops, port, &res, NULL);
if (!bus)
return -ENOMEM;
diff --git a/drivers/pci/host/pcie-iproc.c b/drivers/pci/host/pcie-iproc.c
index 9193951..bc999b7 100644
--- a/drivers/pci/host/pcie-iproc.c
+++ b/drivers/pci/host/pcie-iproc.c
@@ -357,7 +357,8 @@ int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res)
sysdata = pcie;
#endif
- bus = pci_create_root_bus(pcie->dev, 0, &iproc_pcie_ops, sysdata, res);
+ bus = pci_create_root_bus(pcie->dev, 0, &iproc_pcie_ops, sysdata, res,
+ NULL);
if (!bus) {
dev_err(pcie->dev, "unable to create PCI root bus\n");
ret = -ENOMEM;
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index f441d1b..c0f2e44 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -2039,7 +2039,8 @@ void __weak pcibios_remove_bus(struct pci_bus *bus)
}
struct pci_bus *pci_create_root_bus(struct device *parent, int bus,
- struct pci_ops *ops, void *sysdata, struct list_head *resources)
+ struct pci_ops *ops, void *sysdata, struct list_head *resources,
+ struct fwnode_handle *fwnode)
{
int error;
struct pci_host_bridge *bridge;
@@ -2069,6 +2070,7 @@ struct pci_bus *pci_create_root_bus(struct device *parent, int bus,
if (!bridge)
goto err_out;
+ bridge->fwnode = fwnode;
bridge->dev.parent = parent;
bridge->dev.release = pci_release_host_bridge_dev;
dev_set_name(&bridge->dev, "pci%04x:%02x", pci_domain_nr(b), bus);
@@ -2223,7 +2225,7 @@ struct pci_bus *pci_scan_root_bus_msi(struct device *parent, int bus,
break;
}
- b = pci_create_root_bus(parent, bus, ops, sysdata, resources);
+ b = pci_create_root_bus(parent, bus, ops, sysdata, resources, NULL);
if (!b)
return NULL;
@@ -2261,7 +2263,7 @@ struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops,
pci_add_resource(&resources, &ioport_resource);
pci_add_resource(&resources, &iomem_resource);
pci_add_resource(&resources, &busn_resource);
- b = pci_create_root_bus(NULL, bus, ops, sysdata, &resources);
+ b = pci_create_root_bus(NULL, bus, ops, sysdata, &resources, NULL);
if (b) {
pci_scan_child_bus(b);
} else {
diff --git a/include/linux/pci.h b/include/linux/pci.h
index b54fbf1..86ce5fa 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -409,6 +409,7 @@ struct pci_host_bridge {
struct device dev;
struct pci_bus *bus; /* root bus */
struct list_head windows; /* resource_entry */
+ struct fwnode_handle *fwnode;
void (*release_fn)(struct pci_host_bridge *);
void *release_data;
unsigned int ignore_reset_delay:1; /* for entire hierarchy */
@@ -789,7 +790,8 @@ void pci_bus_add_devices(const struct pci_bus *bus);
struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops, void *sysdata);
struct pci_bus *pci_create_root_bus(struct device *parent, int bus,
struct pci_ops *ops, void *sysdata,
- struct list_head *resources);
+ struct list_head *resources,
+ struct fwnode_handle *fwnode);
int pci_bus_insert_busn_res(struct pci_bus *b, int bus, int busmax);
int pci_bus_update_busn_res_end(struct pci_bus *b, int busmax);
void pci_bus_release_busn_res(struct pci_bus *b);
--
1.9.1
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