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| author | Bjorn Helgaas <bjorn.helgaas@hp.com> | 2009-11-04 10:32:57 -0700 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2009-11-04 13:06:44 -0800 |
| commit | 865df576e8fc70daf297b53e61a4fbefc719d065 (patch) | |
| tree | 59abb13e1dd402bf8cb4496ab94bbceb2ac2ee2b /drivers/pci/setup-bus.c | |
| parent | 0207c356ef0e2bae6ce4603080d42c130d7debc6 (diff) | |
| download | linux-865df576e8fc70daf297b53e61a4fbefc719d065.tar.gz linux-865df576e8fc70daf297b53e61a4fbefc719d065.tar.bz2 linux-865df576e8fc70daf297b53e61a4fbefc719d065.zip | |
PCI: improve discovery/configuration messages
This makes PCI resource management messages more consistent and adds a few
new messages to aid debugging.
Whenever we assign resources to a device, update a BAR, or change a
bridge aperture, it's worth noting it.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/pci/setup-bus.c')
| -rw-r--r-- | drivers/pci/setup-bus.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c index ed6916bac675..502d1704c533 100644 --- a/drivers/pci/setup-bus.c +++ b/drivers/pci/setup-bus.c @@ -74,8 +74,8 @@ void pci_setup_cardbus(struct pci_bus *bus) struct resource *res; struct pci_bus_region region; - dev_info(&bridge->dev, "CardBus bridge, secondary bus %04x:%02x\n", - pci_domain_nr(bus), bus->number); + dev_info(&bridge->dev, "CardBus bridge to [bus %02x-%02x]\n", + bus->secondary, bus->subordinate); res = bus->resource[0]; pcibios_resource_to_bus(bridge, ®ion, res); @@ -145,8 +145,8 @@ static void pci_setup_bridge(struct pci_bus *bus) if (pci_is_enabled(bridge)) return; - dev_info(&bridge->dev, "PCI bridge, secondary bus %04x:%02x\n", - pci_domain_nr(bus), bus->number); + dev_info(&bridge->dev, "PCI bridge to [bus %02x-%02x]\n", + bus->secondary, bus->subordinate); /* Set up the top and bottom of the PCI I/O segment for this bus. */ res = bus->resource[0]; @@ -338,6 +338,10 @@ static void pbus_size_io(struct pci_bus *bus, resource_size_t min_size) #endif size = ALIGN(size + size1, 4096); if (!size) { + if (b_res->start || b_res->end) + dev_info(&bus->self->dev, "disabling bridge window " + "%pR to [bus %02x-%02x] (unused)\n", b_res, + bus->secondary, bus->subordinate); b_res->flags = 0; return; } @@ -383,8 +387,9 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask, align = pci_resource_alignment(dev, r); order = __ffs(align) - 20; if (order > 11) { - dev_warn(&dev->dev, "BAR %d: bad alignment %llx: " - "%pR\n", i, (unsigned long long)align, r); + dev_warn(&dev->dev, "disabling BAR %d: %pR " + "(bad alignment %#llx)\n", i, r, + (unsigned long long) align); r->flags = 0; continue; } @@ -418,6 +423,10 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask, } size = ALIGN(size, min_align); if (!size) { + if (b_res->start || b_res->end) + dev_info(&bus->self->dev, "disabling bridge window " + "%pR to [bus %02x-%02x] (unused)\n", b_res, + bus->secondary, bus->subordinate); b_res->flags = 0; return 1; } |