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parisc/PCI: register busn_res for root buses

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Add the host bridge bus number aperture to the resource list.
Like the MMIO and I/O port apertures, this is used when assigning
resources to hot-added devices or in the case of conflicts.

[bhelgaas: changelog, set flags directly, at LBA bus_num init]
CC: Kyle McMartin <kyle@mcmartin.ca>
CC: Helge Deller <deller@gmx.de>
CC: linux-parisc@vger.kernel.org
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Yinghai Lu 2012-05-17 18:51:12 -07:00 committed by Bjorn Helgaas
parent be8e60d8be
commit 30aa80da43
2 changed files with 14 additions and 4 deletions
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10
drivers/parisc/dino.c
View File

@ -898,6 +898,7 @@ static int __init dino_probe(struct parisc_device *dev)
LIST_HEAD(resources);
struct pci_bus *bus;
unsigned long hpa = dev->hpa.start;
int max;
name = "Dino";
if (is_card_dino(&dev->id)) {
@ -983,6 +984,10 @@ static int __init dino_probe(struct parisc_device *dev)
if (dino_dev->hba.gmmio_space.flags)
pci_add_resource(&resources, &dino_dev->hba.gmmio_space);
dino_dev->hba.bus_num.start = dino_current_bus;
dino_dev->hba.bus_num.end = 255;
dino_dev->hba.bus_num.flags = IORESOURCE_BUS;
pci_add_resource(&resources, &dino_dev->hba.bus_num);
/*
** It's not used to avoid chicken/egg problems
** with configuration accessor functions.
@ -998,12 +1003,13 @@ static int __init dino_probe(struct parisc_device *dev)
return 0;
}
bus->busn_res.end = pci_scan_child_bus(bus);
max = pci_scan_child_bus(bus);
pci_bus_update_busn_res_end(bus, max);
/* This code *depends* on scanning being single threaded
* if it isn't, this global bus number count will fail
*/
dino_current_bus = bus->busn_res.end + 1;
dino_current_bus = max + 1;
pci_bus_assign_resources(bus);
pci_bus_add_devices(bus);
return 0;

8
drivers/parisc/lba_pci.c
View File

@ -989,6 +989,7 @@ lba_pat_resources(struct parisc_device *pa_dev, struct lba_device *lba_dev)
case PAT_PBNUM:
lba_dev->hba.bus_num.start = p->start;
lba_dev->hba.bus_num.end = p->end;
lba_dev->hba.bus_num.flags = IORESOURCE_BUS;
break;
case PAT_LMMIO:
@ -1366,6 +1367,7 @@ lba_driver_probe(struct parisc_device *dev)
void *tmp_obj;
char *version;
void __iomem *addr = ioremap_nocache(dev->hpa.start, 4096);
int max;
/* Read HW Rev First */
func_class = READ_REG32(addr + LBA_FCLASS);
@ -1502,6 +1504,8 @@ lba_driver_probe(struct parisc_device *dev)
if (lba_dev->hba.gmmio_space.flags)
pci_add_resource(&resources, &lba_dev->hba.gmmio_space);
pci_add_resource(&resources, &lba_dev->hba.bus_num);
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,
@ -1511,7 +1515,7 @@ lba_driver_probe(struct parisc_device *dev)
return 0;
}
lba_bus->busn_res.end = pci_scan_child_bus(lba_bus);
max = pci_scan_child_bus(lba_bus);
/* This is in lieu of calling pci_assign_unassigned_resources() */
if (is_pdc_pat()) {
@ -1541,7 +1545,7 @@ lba_driver_probe(struct parisc_device *dev)
lba_dev->flags |= LBA_FLAG_SKIP_PROBE;
}
lba_next_bus = lba_res->busn_res.end + 1;
lba_next_bus = max + 1;
pci_bus_add_devices(lba_bus);
/* Whew! Finally done! Tell services we got this one covered. */