diff options
| author | Bjorn Helgaas <bhelgaas@google.com> | 2011-10-28 16:27:17 -0600 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2012-01-06 12:11:05 -0800 |
| commit | f4d9ea9abf04a6ad9643df5497e6243fbf64196e (patch) | |
| tree | 04085c4f34f1a48ea6e28a1168486001ecb78154 /drivers/parisc | |
| parent | 7590e500ad83d9ac1e55eed4720e053eff14b8e5 (diff) | |
| download | lwn-f4d9ea9abf04a6ad9643df5497e6243fbf64196e.tar.gz lwn-f4d9ea9abf04a6ad9643df5497e6243fbf64196e.zip | |
parisc/PCI: lba: deal with LMMIO/PAT overlaps before creating PCI root bus
This moves the truncate_pat_collision() call out of the pcibios_fixup_bus()
path so that when a future patch builds a list of root bus resources for
pci_create_bus(), it can use the truncated LMMIO range.
truncate_pat_collision() used to be called in this path:
pci_scan_bus_parented
pci_create_bus
pci_scan_child_bus
pcibios_fixup_bus
lba_fixup_bus
truncate_pat_collision
All of the PAT and lba_dev resource setup must be done before we call
pci_scan_bus_parented(), so it should be safe to move the
truncate_pat_collision() to just before pci_scan_bus_parented().
CC: linux-parisc@vger.kernel.org
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/parisc')
| -rw-r--r-- | drivers/parisc/lba_pci.c | 35 |
1 files changed, 18 insertions, 17 deletions
diff --git a/drivers/parisc/lba_pci.c b/drivers/parisc/lba_pci.c index 3aeb3279c92a..2c7edf3a6cd0 100644 --- a/drivers/parisc/lba_pci.c +++ b/drivers/parisc/lba_pci.c @@ -689,23 +689,7 @@ lba_fixup_bus(struct pci_bus *bus) bus->resource[i++] = &(ldev->hba.elmmio_space); } - - /* Overlaps with elmmio can (and should) fail here. - * We will prune (or ignore) the distributed range. - * - * FIXME: SBA code should register all elmmio ranges first. - * that would take care of elmmio ranges routed - * to a different rope (already discovered) from - * getting registered *after* LBA code has already - * registered it's distributed lmmio range. - */ - if (truncate_pat_collision(&iomem_resource, - &(ldev->hba.lmmio_space))) { - - printk(KERN_WARNING "LBA: lmmio_space [%lx/%lx] duplicate!\n", - (long)ldev->hba.lmmio_space.start, - (long)ldev->hba.lmmio_space.end); - } else { + if (ldev->hba.lmmio_space.flags) { err = request_resource(&iomem_resource, &(ldev->hba.lmmio_space)); if (err < 0) { printk(KERN_ERR "FAILED: lba_fixup_bus() request for " @@ -1518,6 +1502,23 @@ lba_driver_probe(struct parisc_device *dev) if (lba_dev->hba.bus_num.start < lba_next_bus) lba_dev->hba.bus_num.start = lba_next_bus; + /* Overlaps with elmmio can (and should) fail here. + * We will prune (or ignore) the distributed range. + * + * FIXME: SBA code should register all elmmio ranges first. + * that would take care of elmmio ranges routed + * to a different rope (already discovered) from + * getting registered *after* LBA code has already + * registered it's distributed lmmio range. + */ + if (truncate_pat_collision(&iomem_resource, + &(lba_dev->hba.lmmio_space))) { + printk(KERN_WARNING "LBA: lmmio_space [%lx/%lx] duplicate!\n", + (long)lba_dev->hba.lmmio_space.start, + (long)lba_dev->hba.lmmio_space.end); + lba_dev->hba.lmmio_space.flags = 0; + } + dev->dev.platform_data = lba_dev; lba_bus = lba_dev->hba.hba_bus = pci_scan_bus_parented(&dev->dev, lba_dev->hba.bus_num.start, |