[PATCH 07/28] PCI: Pass PCI domain number combined with root bus number

Yijing Wang
2015-01-16T03:48:06Z

Now we could pass PCI domain combined with bus number
in u32 argu. Because in arm/arm64, PCI domain number
is assigned by pci_bus_assign_domain_nr(). So we leave
pci_scan_root_bus() and pci_create_root_bus() in arm/arm64
unchanged. A new function pci_host_assign_domain_nr()
will be introduced for arm/arm64 to assign domain number
in later patch.

Signed-off-by: Yijing Wang <wangyijing@huawei.com>
---
arch/alpha/kernel/pci.c | 5 +++--
arch/alpha/kernel/sys_nautilus.c | 3 ++-
arch/ia64/pci/pci.c | 4 ++--
arch/ia64/sn/kernel/io_init.c | 5 +++--
arch/microblaze/pci/pci-common.c | 5 +++--
arch/mips/pci/pci.c | 4 ++--
arch/powerpc/kernel/pci-common.c | 5 +++--
arch/s390/pci/pci.c | 5 +++--
arch/sh/drivers/pci/pci.c | 5 +++--
arch/sparc/kernel/pci.c | 5 +++--
arch/tile/kernel/pci.c | 4 ++--
arch/tile/kernel/pci_gx.c | 5 +++--
arch/x86/pci/acpi.c | 6 +++---
arch/x86/pci/common.c | 3 ++-
drivers/pci/xen-pcifront.c | 5 +++--
15 files changed, 40 insertions(+), 29 deletions(-)

diff --git a/arch/alpha/kernel/pci.c b/arch/alpha/kernel/pci.c
index 97f9730..b15f9f2 100644
--- a/arch/alpha/kernel/pci.c
+++ b/arch/alpha/kernel/pci.c
@@ -332,8 +332,9 @@ common_init_pci(void)
pci_add_resource_offset(&resources, hose->mem_space,
hose->mem_space->start);

- bus = pci_scan_root_bus(NULL, next_busno, alpha_mv.pci_ops,
- hose, &resources);
+ bus = pci_scan_root_bus(NULL,
+ PCI_DOMBUS(hose->index, next_busno), alpha_mv.pci_ops,
+ hose, &resources);
if (bus)
pci_bus_add_devices(bus);
hose->bus = bus;
diff --git a/arch/alpha/kernel/sys_nautilus.c b/arch/alpha/kernel/sys_nautilus.c
index 2c864bb..f7bfdf3 100644
--- a/arch/alpha/kernel/sys_nautilus.c
+++ b/arch/alpha/kernel/sys_nautilus.c
@@ -206,7 +206,8 @@ nautilus_init_pci(void)
unsigned long memtop = max_low_pfn << PAGE_SHIFT;

/* Scan our single hose. */
- bus = pci_scan_bus_legacy(0, alpha_mv.pci_ops, hose);
+ bus = pci_scan_bus_legacy(PCI_DOMBUS(hose->index, 0),
+ alpha_mv.pci_ops, hose);
hose->bus = bus;
pcibios_claim_one_bus(bus);

diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c
index 291a582..e457015 100644
--- a/arch/ia64/pci/pci.c
+++ b/arch/ia64/pci/pci.c
@@ -465,8 +465,8 @@ struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root)
* should handle the case here, but it appears that IA64 hasn't
* such quirk. So we just ignore the case now.
*/
- pbus = pci_create_root_bus(NULL, bus, &pci_root_ops, controller,
- &info->resources);
+ pbus = pci_create_root_bus(NULL, PCI_DOMBUS(domain, bus),
+ &pci_root_ops, controller, &info->resources);
if (!pbus) {
pci_free_resource_list(&info->resources);
__release_pci_root_info(info);
diff --git a/arch/ia64/sn/kernel/io_init.c b/arch/ia64/sn/kernel/io_init.c
index 63b43a6..bcdc5b8 100644
--- a/arch/ia64/sn/kernel/io_init.c
+++ b/arch/ia64/sn/kernel/io_init.c
@@ -266,8 +266,9 @@ sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus)
pci_add_resource_offset(&resources, &res[1],
prom_bussoft_ptr->bs_legacy_mem);

- bus = pci_scan_root_bus(NULL, busnum, &pci_root_ops, controller,
- &resources);
+ bus = pci_scan_root_bus(NULL,
+ PCI_DOMBUS(controller->segment, busnum),
+ &pci_root_ops, controller, &resources);
if (bus == NULL) {
kfree(res);
kfree(controller);
diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
index 009b271..890bd36 100644
--- a/arch/microblaze/pci/pci-common.c
+++ b/arch/microblaze/pci/pci-common.c
@@ -1339,8 +1339,9 @@ static void pcibios_scan_phb(struct pci_controller *hose)

pcibios_setup_phb_resources(hose, &resources);

- bus = pci_scan_root_bus(hose->parent, hose->first_busno,
- hose->ops, hose, &resources);
+ bus = pci_scan_root_bus(hose->parent,
+ PCI_DOMBUS(hose->global_number, hose->first_busno),
+ hose->ops, hose, &resources);
if (bus == NULL) {
pr_err("Failed to create bus for PCI domain %04x\n",
hose->global_number);
diff --git a/arch/mips/pci/pci.c b/arch/mips/pci/pci.c
index 9eb54b5..980755a 100644
--- a/arch/mips/pci/pci.c
+++ b/arch/mips/pci/pci.c
@@ -92,8 +92,8 @@ static void pcibios_scanbus(struct pci_controller *hose)
pci_add_resource_offset(&resources,
hose->mem_resource, hose->mem_offset);
pci_add_resource_offset(&resources, hose->io_resource, hose->io_offset);
- bus = pci_scan_root_bus(NULL, next_busno, hose->pci_ops, hose,
- &resources);
+ bus = pci_scan_root_bus(NULL, PCI_DOMBUS(hose->index, next_busno),
+ hose->pci_ops, hose, &resources);
if (!bus)
pci_free_resource_list(&resources);

diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 37d512d..927c3dd 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -1602,8 +1602,9 @@ void pcibios_scan_phb(struct pci_controller *hose)
pci_add_resource(&resources, &hose->busn);

/* Create an empty bus for the toplevel */
- bus = pci_create_root_bus(hose->parent, hose->first_busno,
- hose->ops, hose, &resources);
+ bus = pci_create_root_bus(hose->parent,
+ PCI_DOMBUS(hose->global_number, hose->first_busno),
+ hose->ops, hose, &resources);
if (bus == NULL) {
pr_err("Failed to create bus for PCI domain %04x\n",
hose->global_number);
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
index 0b32769..612decf 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c
@@ -750,8 +750,9 @@ static int zpci_scan_bus(struct zpci_dev *zdev)
if (ret)
return ret;

- zdev->bus = pci_scan_root_bus(NULL, ZPCI_BUS_NR, &pci_root_ops,
- zdev, &resources);
+ zdev->bus = pci_scan_root_bus(NULL,
+ PCI_DOMBUS(zdev->domain, ZPCI_BUS_NR), &pci_root_ops,
+ zdev, &resources);
if (!zdev->bus) {
zpci_cleanup_bus_resources(zdev);
return -EIO;
diff --git a/arch/sh/drivers/pci/pci.c b/arch/sh/drivers/pci/pci.c
index efc1051..7ee0772 100644
--- a/arch/sh/drivers/pci/pci.c
+++ b/arch/sh/drivers/pci/pci.c
@@ -52,8 +52,9 @@ static void pcibios_scanbus(struct pci_channel *hose)
pci_add_resource_offset(&resources, res, offset);
}

- bus = pci_scan_root_bus(NULL, next_busno, hose->pci_ops, hose,
- &resources);
+ bus = pci_scan_root_bus(NULL,
+ PCI_DOMBUS(hose->index, next_busno),
+ hose->pci_ops, hose, &resources);
hose->bus = bus;

need_domain_info = need_domain_info || hose->index;
diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c
index b36365f..d798b42 100644
--- a/arch/sparc/kernel/pci.c
+++ b/arch/sparc/kernel/pci.c
@@ -664,8 +664,9 @@ struct pci_bus *pci_scan_one_pbm(struct pci_pbm_info *pbm,
pbm->busn.end = pbm->pci_last_busno;
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);
+ bus = pci_create_root_bus(parent,
+ PCI_DOMBUS(pbm->index, pbm->pci_first_busno),
+ pbm->pci_ops, pbm, &resources);
if (!bus) {
printk(KERN_ERR "Failed to create bus for %s\n",
node->full_name);
diff --git a/arch/tile/kernel/pci.c b/arch/tile/kernel/pci.c
index 83d3e30..2603db5 100644
--- a/arch/tile/kernel/pci.c
+++ b/arch/tile/kernel/pci.c
@@ -306,8 +306,8 @@ int __init pcibios_init(void)

pci_add_resource(&resources, &ioport_resource);
pci_add_resource(&resources, &iomem_resource);
- bus = pci_scan_root_bus(NULL, 0, controller->ops,
- controller, &resources);
+ bus = pci_scan_root_bus(NULL, PCI_DOMBUS(controller->index, 0),
+ controller->ops, controller, &resources);
controller->root_bus = bus;
controller->last_busno = bus->busn_res.end;
}
diff --git a/arch/tile/kernel/pci_gx.c b/arch/tile/kernel/pci_gx.c
index d7a0729..1e6ff84 100644
--- a/arch/tile/kernel/pci_gx.c
+++ b/arch/tile/kernel/pci_gx.c
@@ -881,8 +881,9 @@ int __init pcibios_init(void)
controller->mem_offset);
pci_add_resource(&resources, &controller->io_space);
controller->first_busno = next_busno;
- bus = pci_scan_root_bus(NULL, next_busno, controller->ops,
- controller, &resources);
+ bus = pci_scan_root_bus(NULL,
+ PCI_DOMBUS(controller->index, next_busno),
+ controller->ops, controller, &resources);
controller->root_bus = bus;
next_busno = bus->busn_res.end + 1;
}
diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index cfd1b13..8edea63 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -536,9 +536,9 @@ struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root)
}

if (!setup_mcfg_map(info, domain, (u8)root->secondary.start,
- (u8)root->secondary.end, root->mcfg_addr))
- bus = pci_create_root_bus(NULL, busnum, &pci_root_ops,
- sd, &resources);
+ (u8)root->secondary.end, root->mcfg_addr))
+ bus = pci_create_root_bus(NULL, PCI_DOMBUS(domain, busnum),
+ &pci_root_ops, sd, &resources);

if (bus) {
pci_scan_child_bus(bus);
diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c
index 300d39e..d6879ee 100644
--- a/arch/x86/pci/common.c
+++ b/arch/x86/pci/common.c
@@ -470,7 +470,8 @@ void pcibios_scan_root(int busnum)
sd->node = x86_pci_root_bus_node(busnum);
x86_pci_root_bus_resources(busnum, &resources);
printk(KERN_DEBUG "PCI: Probing PCI hardware (bus %02x)\n", busnum);
- bus = pci_scan_root_bus(NULL, busnum, &pci_root_ops, sd, &resources);
+ bus = pci_scan_root_bus(NULL, PCI_DOMBUS(0, busnum),
+ &pci_root_ops, sd, &resources);
if (!bus) {
pci_free_resource_list(&resources);
kfree(sd);
diff --git a/drivers/pci/xen-pcifront.c b/drivers/pci/xen-pcifront.c
index 240ddbc..a010dfa 100644
--- a/drivers/pci/xen-pcifront.c
+++ b/drivers/pci/xen-pcifront.c
@@ -477,8 +477,9 @@ static int pcifront_scan_root(struct pcifront_device *pdev,

pci_lock_rescan_remove();

- b = pci_scan_root_bus(&pdev->xdev->dev, bus,
- &pcifront_bus_ops, sd, &resources);
+ b = pci_scan_root_bus(&pdev->xdev->dev,
+ PCI_DOMBUS(sd->domain, bus),
+ &pcifront_bus_ops, sd, &resources);
if (!b) {
dev_err(&pdev->xdev->dev,
"Error creating PCI Frontend Bus!\n");
--
1.7.1