[PATCH v10 03/29] PCI: Save domain in pci_host_bridge

From: Yijing Wang
Date: Tue Apr 21 2015 - 07:48:07 EST

Save domain in pci_host_bridge, so we could get domain
from pci_host_bridge, and at the end of series, we could
clean up the arch specific pci_domain_nr(). For arm/arm64,
the domain argument is pointless, because they enable
CONFIG_PCI_DOMAINS_GENERIC, PCI core would assign domain
number for them, so we pass meaningless -1 as the domain
number.

Tested-by: Gregory CLEMENT <gregory.clement@xxxxxxxxxxxxxxxxxx> #mvebu part
Signed-off-by: Yijing Wang <wangyijing@xxxxxxxxxx>
---
arch/alpha/kernel/pci.c | 4 ++--
arch/alpha/kernel/sys_nautilus.c | 2 +-
arch/arm/kernel/bios32.c | 2 +-
arch/arm/mach-dove/pcie.c | 2 +-
arch/arm/mach-iop13xx/pci.c | 4 ++--
arch/arm/mach-mv78xx0/pcie.c | 2 +-
arch/arm/mach-orion5x/pci.c | 4 ++--
arch/frv/mb93090-mb00/pci-vdk.c | 3 ++-
arch/ia64/pci/pci.c | 4 ++--
arch/ia64/sn/kernel/io_init.c | 4 ++--
arch/m68k/coldfire/pci.c | 2 +-
arch/microblaze/pci/pci-common.c | 4 ++--
arch/mips/pci/pci.c | 4 ++--
arch/mn10300/unit-asb2305/pci.c | 3 ++-
arch/powerpc/kernel/pci-common.c | 4 ++--
arch/s390/pci/pci.c | 4 ++--
arch/sh/drivers/pci/pci.c | 4 ++--
arch/sparc/kernel/leon_pci.c | 2 +-
arch/sparc/kernel/pci.c | 4 ++--
arch/sparc/kernel/pcic.c | 2 +-
arch/tile/kernel/pci.c | 4 ++--
arch/tile/kernel/pci_gx.c | 4 ++--
arch/unicore32/kernel/pci.c | 2 +-
arch/x86/pci/acpi.c | 4 ++--
arch/x86/pci/common.c | 2 +-
arch/xtensa/kernel/pci.c | 2 +-
drivers/parisc/dino.c | 2 +-
drivers/parisc/lba_pci.c | 2 +-
drivers/pci/host/pci-mvebu.c | 2 +-
drivers/pci/host/pci-tegra.c | 4 ++--
drivers/pci/host/pci-versatile.c | 3 ++-
drivers/pci/host/pci-xgene.c | 2 +-
drivers/pci/host/pcie-designware.c | 2 +-
drivers/pci/host/pcie-xilinx.c | 2 +-
drivers/pci/hotplug/ibmphp_core.c | 2 +-
drivers/pci/probe.c | 21 +++++++++++++--------
drivers/pci/xen-pcifront.c | 2 +-
include/linux/pci.h | 8 +++++---
38 files changed, 72 insertions(+), 62 deletions(-)

diff --git a/arch/alpha/kernel/pci.c b/arch/alpha/kernel/pci.c
index 82f738e..2b0bce9 100644
--- a/arch/alpha/kernel/pci.c
+++ b/arch/alpha/kernel/pci.c
@@ -336,8 +336,8 @@ 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, hose->index, next_busno,
+ alpha_mv.pci_ops, hose, &resources);
if (!bus)
continue;
hose->bus = bus;
diff --git a/arch/alpha/kernel/sys_nautilus.c b/arch/alpha/kernel/sys_nautilus.c
index 700686d..9614e4e 100644
--- a/arch/alpha/kernel/sys_nautilus.c
+++ b/arch/alpha/kernel/sys_nautilus.c
@@ -206,7 +206,7 @@ nautilus_init_pci(void)
unsigned long memtop = max_low_pfn << PAGE_SHIFT;

/* Scan our single hose. */
- bus = pci_scan_bus(0, alpha_mv.pci_ops, hose);
+ bus = pci_scan_bus(hose->index, 0, alpha_mv.pci_ops, hose);
if (!bus)
return;

diff --git a/arch/arm/kernel/bios32.c b/arch/arm/kernel/bios32.c
index ab19b7c..fec2c90 100644
--- a/arch/arm/kernel/bios32.c
+++ b/arch/arm/kernel/bios32.c
@@ -486,7 +486,7 @@ static void pcibios_init_hw(struct device *parent, struct hw_pci *hw,
if (hw->scan)
sys->bus = hw->scan(nr, sys);
else
- sys->bus = pci_scan_root_bus(parent, sys->busnr,
+ sys->bus = pci_scan_root_bus(parent, -1, sys->busnr,
hw->ops, sys, &sys->resources);

if (!sys->bus)
diff --git a/arch/arm/mach-dove/pcie.c b/arch/arm/mach-dove/pcie.c
index 91fe971..a379287 100644
--- a/arch/arm/mach-dove/pcie.c
+++ b/arch/arm/mach-dove/pcie.c
@@ -160,7 +160,7 @@ dove_pcie_scan_bus(int nr, struct pci_sys_data *sys)
return NULL;
}

- return pci_scan_root_bus(NULL, sys->busnr, &pcie_ops, sys,
+ return pci_scan_root_bus(NULL, -1, sys->busnr, &pcie_ops, sys,
&sys->resources);
}

diff --git a/arch/arm/mach-iop13xx/pci.c b/arch/arm/mach-iop13xx/pci.c
index 9082b84..bc4ba7e 100644
--- a/arch/arm/mach-iop13xx/pci.c
+++ b/arch/arm/mach-iop13xx/pci.c
@@ -535,12 +535,12 @@ struct pci_bus *iop13xx_scan_bus(int nr, struct pci_sys_data *sys)
while(time_before(jiffies, atux_trhfa_timeout))
udelay(100);

- bus = pci_bus_atux = pci_scan_root_bus(NULL, sys->busnr,
+ bus = pci_bus_atux = pci_scan_root_bus(NULL, -1, sys->busnr,
&iop13xx_atux_ops,
sys, &sys->resources);
break;
case IOP13XX_INIT_ATU_ATUE:
- bus = pci_bus_atue = pci_scan_root_bus(NULL, sys->busnr,
+ bus = pci_bus_atue = pci_scan_root_bus(NULL, -1, sys->busnr,
&iop13xx_atue_ops,
sys, &sys->resources);
break;
diff --git a/arch/arm/mach-mv78xx0/pcie.c b/arch/arm/mach-mv78xx0/pcie.c
index 097ea4c..4010a95 100644
--- a/arch/arm/mach-mv78xx0/pcie.c
+++ b/arch/arm/mach-mv78xx0/pcie.c
@@ -202,7 +202,7 @@ mv78xx0_pcie_scan_bus(int nr, struct pci_sys_data *sys)
return NULL;
}

- return pci_scan_root_bus(NULL, sys->busnr, &pcie_ops, sys,
+ return pci_scan_root_bus(NULL, -1, sys->busnr, &pcie_ops, sys,
&sys->resources);
}

diff --git a/arch/arm/mach-orion5x/pci.c b/arch/arm/mach-orion5x/pci.c
index b02f394..83898cc 100644
--- a/arch/arm/mach-orion5x/pci.c
+++ b/arch/arm/mach-orion5x/pci.c
@@ -558,11 +558,11 @@ int __init orion5x_pci_sys_setup(int nr, struct pci_sys_data *sys)
struct pci_bus __init *orion5x_pci_sys_scan_bus(int nr, struct pci_sys_data *sys)
{
if (nr == 0)
- return pci_scan_root_bus(NULL, sys->busnr, &pcie_ops, sys,
+ return pci_scan_root_bus(NULL, -1, sys->busnr, &pcie_ops, sys,
&sys->resources);

if (nr == 1 && !orion5x_pci_disabled)
- return pci_scan_root_bus(NULL, sys->busnr, &pci_ops, sys,
+ return pci_scan_root_bus(NULL, -1, sys->busnr, &pci_ops, sys,
&sys->resources);

BUG();
diff --git a/arch/frv/mb93090-mb00/pci-vdk.c b/arch/frv/mb93090-mb00/pci-vdk.c
index f211839..719fb75 100644
--- a/arch/frv/mb93090-mb00/pci-vdk.c
+++ b/arch/frv/mb93090-mb00/pci-vdk.c
@@ -384,7 +384,8 @@ int __init pcibios_init(void)
printk("PCI: Probing PCI hardware\n");
pci_add_resource(&resources, &pci_ioport_resource);
pci_add_resource(&resources, &pci_iomem_resource);
- bus = pci_scan_root_bus(NULL, 0, pci_root_ops, NULL, &resources);
+ bus = pci_scan_root_bus(NULL, 0, 0, pci_root_ops, NULL,
+ &resources);

pcibios_irq_init();
pcibios_fixup_irqs();
diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c
index 48cc657..c642bc8 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, 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 1be65eb..d528814 100644
--- a/arch/ia64/sn/kernel/io_init.c
+++ b/arch/ia64/sn/kernel/io_init.c
@@ -266,8 +266,8 @@ 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, controller->segment, busnum,
+ &pci_root_ops, controller, &resources);
if (bus == NULL) {
kfree(res);
kfree(controller);
diff --git a/arch/m68k/coldfire/pci.c b/arch/m68k/coldfire/pci.c
index 821de92..63c0c2f 100644
--- a/arch/m68k/coldfire/pci.c
+++ b/arch/m68k/coldfire/pci.c
@@ -312,7 +312,7 @@ static int __init mcf_pci_init(void)
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(msecs_to_jiffies(200));

- rootbus = pci_scan_bus(0, &mcf_pci_ops, NULL);
+ rootbus = pci_scan_bus(0, 0, &mcf_pci_ops, NULL);
if (!rootbus)
return -ENODEV;

diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
index ae838ed..d232c8a 100644
--- a/arch/microblaze/pci/pci-common.c
+++ b/arch/microblaze/pci/pci-common.c
@@ -1350,8 +1350,8 @@ 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, 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 8bb13a4..d6361d5 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, hose->index, next_busno,
+ hose->pci_ops, hose, &resources);
hose->bus = bus;

need_domain_info = need_domain_info || hose->index;
diff --git a/arch/mn10300/unit-asb2305/pci.c b/arch/mn10300/unit-asb2305/pci.c
index 3dfe2d3..a298172 100644
--- a/arch/mn10300/unit-asb2305/pci.c
+++ b/arch/mn10300/unit-asb2305/pci.c
@@ -372,7 +372,8 @@ static int __init pcibios_init(void)

pci_add_resource_offset(&resources, &pci_ioport_resource, io_offset);
pci_add_resource_offset(&resources, &pci_iomem_resource, mem_offset);
- bus = pci_scan_root_bus(NULL, 0, &pci_direct_ampci, NULL, &resources);
+ bus = pci_scan_root_bus(NULL, 0, 0, &pci_direct_ampci,
+ NULL, &resources);
if (!bus)
return 0;

diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 2a525c9..9913f6c 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -1612,8 +1612,8 @@ 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, 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 b2c76f6..d70b2db 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c
@@ -774,8 +774,8 @@ 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, 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 d5462b7..293249a 100644
--- a/arch/sh/drivers/pci/pci.c
+++ b/arch/sh/drivers/pci/pci.c
@@ -52,8 +52,8 @@ 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, 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/leon_pci.c b/arch/sparc/kernel/leon_pci.c
index 4371f72..36d702d 100644
--- a/arch/sparc/kernel/leon_pci.c
+++ b/arch/sparc/kernel/leon_pci.c
@@ -32,7 +32,7 @@ void leon_pci_init(struct platform_device *ofdev, struct leon_pci_info *info)
info->busn.flags = IORESOURCE_BUS;
pci_add_resource(&resources, &info->busn);

- root_bus = pci_scan_root_bus(&ofdev->dev, 0, info->ops, info,
+ root_bus = pci_scan_root_bus(&ofdev->dev, 0, 0, info->ops, info,
&resources);
if (!root_bus) {
pci_free_resource_list(&resources);
diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c
index 9e267ca..e40e456 100644
--- a/arch/sparc/kernel/pci.c
+++ b/arch/sparc/kernel/pci.c
@@ -667,8 +667,8 @@ 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, 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/sparc/kernel/pcic.c b/arch/sparc/kernel/pcic.c
index 24384e1..7e86410 100644
--- a/arch/sparc/kernel/pcic.c
+++ b/arch/sparc/kernel/pcic.c
@@ -390,7 +390,7 @@ static void __init pcic_pbm_scan_bus(struct linux_pcic *pcic)
{
struct linux_pbm_info *pbm = &pcic->pbm;

- pbm->pci_bus = pci_scan_bus(pbm->pci_first_busno, &pcic_ops, pbm);
+ pbm->pci_bus = pci_scan_bus(0, pbm->pci_first_busno, &pcic_ops, pbm);
if (!pbm->pci_bus)
return;

diff --git a/arch/tile/kernel/pci.c b/arch/tile/kernel/pci.c
index 9475a74..6ae0871 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, 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 b1df847..d47a698 100644
--- a/arch/tile/kernel/pci_gx.c
+++ b/arch/tile/kernel/pci_gx.c
@@ -881,8 +881,8 @@ 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, controller->index, next_busno,
+ controller->ops, controller, &resources);
controller->root_bus = bus;
next_busno = bus->busn_res.end + 1;
}
diff --git a/arch/unicore32/kernel/pci.c b/arch/unicore32/kernel/pci.c
index d45fa5f..ef9be16 100644
--- a/arch/unicore32/kernel/pci.c
+++ b/arch/unicore32/kernel/pci.c
@@ -258,7 +258,7 @@ static int __init pci_common_init(void)

pci_puv3_preinit();

- puv3_bus = pci_scan_bus(0, &pci_puv3_ops, NULL);
+ puv3_bus = pci_scan_bus(0, 0, &pci_puv3_ops, NULL);

if (!puv3_bus)
panic("PCI: unable to scan bus!");
diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index e469598..7563855 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -430,8 +430,8 @@ 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);
+ bus = pci_create_root_bus(NULL, 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 95a0ba7..9813266 100644
--- a/arch/x86/pci/common.c
+++ b/arch/x86/pci/common.c
@@ -486,7 +486,7 @@ 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, 0, busnum, &pci_root_ops, sd, &resources);
if (!bus) {
pci_free_resource_list(&resources);
kfree(sd);
diff --git a/arch/xtensa/kernel/pci.c b/arch/xtensa/kernel/pci.c
index b848cc3..66da4c3 100644
--- a/arch/xtensa/kernel/pci.c
+++ b/arch/xtensa/kernel/pci.c
@@ -183,7 +183,7 @@ static int __init pcibios_init(void)
pci_ctrl->last_busno = 0xff;
INIT_LIST_HEAD(&resources);
pci_controller_apertures(pci_ctrl, &resources);
- bus = pci_scan_root_bus(NULL, pci_ctrl->first_busno,
+ bus = pci_scan_root_bus(NULL, 0, pci_ctrl->first_busno,
pci_ctrl->ops, pci_ctrl, &resources);
if (!bus)
continue;
diff --git a/drivers/parisc/dino.c b/drivers/parisc/dino.c
index a0580af..f375252 100644
--- a/drivers/parisc/dino.c
+++ b/drivers/parisc/dino.c
@@ -986,7 +986,7 @@ static int __init dino_probe(struct parisc_device *dev)
** with configuration accessor functions.
*/
dino_dev->hba.hba_bus = bus = pci_create_root_bus(&dev->dev,
- dino_current_bus, &dino_cfg_ops, NULL, &resources);
+ 0, dino_current_bus, &dino_cfg_ops, NULL, &resources);
if (!bus) {
printk(KERN_ERR "ERROR: failed to scan PCI bus on %s (duplicate bus number %d?)\n",
dev_name(&dev->dev), dino_current_bus);
diff --git a/drivers/parisc/lba_pci.c b/drivers/parisc/lba_pci.c
index dceb9dd..2949030 100644
--- a/drivers/parisc/lba_pci.c
+++ b/drivers/parisc/lba_pci.c
@@ -1563,7 +1563,7 @@ 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,
+ pci_create_root_bus(&dev->dev, 0, lba_dev->hba.bus_num.start,
cfg_ops, NULL, &resources);
if (!lba_bus) {
pci_free_resource_list(&resources);
diff --git a/drivers/pci/host/pci-mvebu.c b/drivers/pci/host/pci-mvebu.c
index 1ab8635..bc4c6c0 100644
--- a/drivers/pci/host/pci-mvebu.c
+++ b/drivers/pci/host/pci-mvebu.c
@@ -756,7 +756,7 @@ static struct pci_bus *mvebu_pcie_scan_bus(int nr, struct pci_sys_data *sys)
struct mvebu_pcie *pcie = sys_to_pcie(sys);
struct pci_bus *bus;

- bus = pci_create_root_bus(&pcie->pdev->dev, sys->busnr,
+ bus = pci_create_root_bus(&pcie->pdev->dev, -1, sys->busnr,
&mvebu_pcie_ops, sys, &sys->resources);
if (!bus)
return NULL;
diff --git a/drivers/pci/host/pci-tegra.c b/drivers/pci/host/pci-tegra.c
index 00e9272..94e9362 100644
--- a/drivers/pci/host/pci-tegra.c
+++ b/drivers/pci/host/pci-tegra.c
@@ -635,8 +635,8 @@ static struct pci_bus *tegra_pcie_scan_bus(int nr, struct pci_sys_data *sys)
struct tegra_pcie *pcie = sys_to_pcie(sys);
struct pci_bus *bus;

- bus = pci_create_root_bus(pcie->dev, sys->busnr, &tegra_pcie_ops, sys,
- &sys->resources);
+ bus = pci_create_root_bus(pcie->dev, -1, sys->busnr, &tegra_pcie_ops,
+ sys, &sys->resources);
if (!bus)
return NULL;

diff --git a/drivers/pci/host/pci-versatile.c b/drivers/pci/host/pci-versatile.c
index 0863d9c..b9fdb6b 100644
--- a/drivers/pci/host/pci-versatile.c
+++ b/drivers/pci/host/pci-versatile.c
@@ -208,7 +208,8 @@ static int versatile_pci_probe(struct platform_device *pdev)
pci_add_flags(PCI_ENABLE_PROC_DOMAINS);
pci_add_flags(PCI_REASSIGN_ALL_BUS | PCI_REASSIGN_ALL_RSRC);

- bus = pci_scan_root_bus(&pdev->dev, 0, &pci_versatile_ops, &sys, &pci_res);
+ bus = pci_scan_root_bus(&pdev->dev, -1, 0, &pci_versatile_ops,
+ &sys, &pci_res);
if (!bus)
return -ENOMEM;

diff --git a/drivers/pci/host/pci-xgene.c b/drivers/pci/host/pci-xgene.c
index ee082c0..c048e03 100644
--- a/drivers/pci/host/pci-xgene.c
+++ b/drivers/pci/host/pci-xgene.c
@@ -499,7 +499,7 @@ static int xgene_pcie_probe_bridge(struct platform_device *pdev)
if (ret)
return ret;

- bus = pci_create_root_bus(&pdev->dev, 0,
+ bus = pci_create_root_bus(&pdev->dev, -1, 0,
&xgene_pcie_ops, port, &res);
if (!bus)
return -ENOMEM;
diff --git a/drivers/pci/host/pcie-designware.c b/drivers/pci/host/pcie-designware.c
index 1f4ea6f..93778b9 100644
--- a/drivers/pci/host/pcie-designware.c
+++ b/drivers/pci/host/pcie-designware.c
@@ -728,7 +728,7 @@ static struct pci_bus *dw_pcie_scan_bus(int nr, struct pci_sys_data *sys)
struct pcie_port *pp = sys_to_pcie(sys);

pp->root_bus_nr = sys->busnr;
- bus = pci_create_root_bus(pp->dev, sys->busnr,
+ bus = pci_create_root_bus(pp->dev, -1, sys->busnr,
&dw_pcie_ops, sys, &sys->resources);
if (!bus)
return NULL;
diff --git a/drivers/pci/host/pcie-xilinx.c b/drivers/pci/host/pcie-xilinx.c
index f1a06a0..b5a72a5 100644
--- a/drivers/pci/host/pcie-xilinx.c
+++ b/drivers/pci/host/pcie-xilinx.c
@@ -647,7 +647,7 @@ static struct pci_bus *xilinx_pcie_scan_bus(int nr, struct pci_sys_data *sys)
struct pci_bus *bus;

port->root_busno = sys->busnr;
- bus = pci_scan_root_bus(port->dev, sys->busnr, &xilinx_pcie_ops,
+ bus = pci_scan_root_bus(port->dev, -1, sys->busnr, &xilinx_pcie_ops,
sys, &sys->resources);

return bus;
diff --git a/drivers/pci/hotplug/ibmphp_core.c b/drivers/pci/hotplug/ibmphp_core.c
index 1530247..db6240e 100644
--- a/drivers/pci/hotplug/ibmphp_core.c
+++ b/drivers/pci/hotplug/ibmphp_core.c
@@ -765,7 +765,7 @@ static u8 bus_structure_fixup(u8 busno)
(l != 0x0000) && (l != 0xffff)) {
debug("%s - Inside bus_structure_fixup()\n",
__func__);
- b = pci_scan_bus(busno, ibmphp_pci_bus->ops, NULL);
+ b = pci_scan_bus(0, busno, ibmphp_pci_bus->ops, NULL);
if (!b)
continue;

diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 7d6a61c..9f9445e 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1891,8 +1891,9 @@ 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_bus *pci_create_root_bus(struct device *parent, int domain,
+ int bus, struct pci_ops *ops, void *sysdata,
+ struct list_head *resources)
{
int error;
struct pci_host_bridge *bridge;
@@ -1922,6 +1923,7 @@ struct pci_bus *pci_create_root_bus(struct device *parent, int bus,
if (!bridge)
goto err_out;

+ bridge->domain = domain;
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);
@@ -2060,8 +2062,9 @@ void pci_bus_release_busn_res(struct pci_bus *b)
res, ret ? "can not be" : "is");
}

-struct pci_bus *pci_scan_root_bus(struct device *parent, int bus,
- struct pci_ops *ops, void *sysdata, struct list_head *resources)
+struct pci_bus *pci_scan_root_bus(struct device *parent, int domain,
+ int bus, struct pci_ops *ops, void *sysdata,
+ struct list_head *resources)
{
struct resource_entry *window;
bool found = false;
@@ -2074,7 +2077,8 @@ struct pci_bus *pci_scan_root_bus(struct device *parent, int bus,
break;
}

- b = pci_create_root_bus(parent, bus, ops, sysdata, resources);
+ b = pci_create_root_bus(parent, domain, bus, ops,
+ sysdata, resources);
if (!b)
return NULL;

@@ -2094,8 +2098,8 @@ struct pci_bus *pci_scan_root_bus(struct device *parent, int bus,
}
EXPORT_SYMBOL(pci_scan_root_bus);

-struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops,
- void *sysdata)
+struct pci_bus *pci_scan_bus(int domain, int bus,
+ struct pci_ops *ops, void *sysdata)
{
LIST_HEAD(resources);
struct pci_bus *b;
@@ -2103,7 +2107,8 @@ 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, domain, bus, ops, sysdata,
+ &resources);
if (b) {
pci_scan_child_bus(b);
} else {
diff --git a/drivers/pci/xen-pcifront.c b/drivers/pci/xen-pcifront.c
index a69e529..830a31e 100644
--- a/drivers/pci/xen-pcifront.c
+++ b/drivers/pci/xen-pcifront.c
@@ -483,7 +483,7 @@ static int pcifront_scan_root(struct pcifront_device *pdev,

pci_lock_rescan_remove();

- b = pci_scan_root_bus(&pdev->xdev->dev, bus,
+ b = pci_scan_root_bus(&pdev->xdev->dev, sd->domain, bus,
&pcifront_bus_ops, sd, &resources);
if (!b) {
dev_err(&pdev->xdev->dev,
diff --git a/include/linux/pci.h b/include/linux/pci.h
index f0b4f7b..1a0f8d2 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -401,6 +401,7 @@ static inline int pci_channel_offline(struct pci_dev *pdev)
}

struct pci_host_bridge {
+ int domain;
struct device dev;
struct pci_bus *bus; /* root bus */
struct list_head windows; /* resource_entry */
@@ -773,14 +774,15 @@ void pcibios_bus_to_resource(struct pci_bus *bus, struct resource *res,
void pcibios_scan_specific_bus(int busn);
struct pci_bus *pci_find_bus(int domain, int busnr);
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_bus *pci_scan_bus(int domain, int bus, struct pci_ops *ops,
+ void *sysdata);
+struct pci_bus *pci_create_root_bus(struct device *parent, int domain, int bus,
struct pci_ops *ops, void *sysdata,
struct list_head *resources);
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);
-struct pci_bus *pci_scan_root_bus(struct device *parent, int bus,
+struct pci_bus *pci_scan_root_bus(struct device *parent, int domain, int bus,
struct pci_ops *ops, void *sysdata,
struct list_head *resources);
struct pci_bus *pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev,
--
1.7.1

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