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authorBjorn Helgaas <bhelgaas@google.com>2015-10-30 01:35:40 +0300
committerBjorn Helgaas <bhelgaas@google.com>2015-10-30 01:35:40 +0300
commit597becb4adb7d57b8e9d857a68f764ce96a141b8 (patch)
tree6ba5133f7d4c9be8b9ec7cfbb6bd48653d093a78 /drivers/pci/pci.c
parent26635112d4d057c9ea38f6284423a30a41a09240 (diff)
downloadlinux-597becb4adb7d57b8e9d857a68f764ce96a141b8.tar.xz
PCI: Expand Enhanced Allocation BAR output
An Enhanced Allocation Capability entry with BEI 0 fills in dev->resource[0] just like a real BAR 0 would, but non-EA experts might not connect "EA - BEI 0" with BAR 0. Decode the EA jargon a little bit, e.g., change this: pci 0002:01:00.0: EA - BEI 0, Prop 0x00: [mem 0x84300000-0x84303fff] to this: pci 0002:01:00.0: BAR 0: [mem 0x84300000-0x84303fff] (from Enhanced Allocation, properties 0x00) Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci/pci.c')
-rw-r--r--drivers/pci/pci.c16
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index e8330b68cecd..3a1454e6dd4a 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -2293,8 +2293,20 @@ static int pci_ea_read(struct pci_dev *dev, int offset)
res->start = start;
res->end = end;
res->flags = flags;
- dev_printk(KERN_DEBUG, &dev->dev, "EA - BEI %2u, Prop 0x%02x: %pR\n",
- bei, prop, res);
+
+ if (bei <= PCI_EA_BEI_BAR5)
+ dev_printk(KERN_DEBUG, &dev->dev, "BAR %d: %pR (from Enhanced Allocation, properties %#02x)\n",
+ bei, res, prop);
+ else if (bei == PCI_EA_BEI_ROM)
+ dev_printk(KERN_DEBUG, &dev->dev, "ROM: %pR (from Enhanced Allocation, properties %#02x)\n",
+ res, prop);
+ else if (bei >= PCI_EA_BEI_VF_BAR0 && bei <= PCI_EA_BEI_VF_BAR5)
+ dev_printk(KERN_DEBUG, &dev->dev, "VF BAR %d: %pR (from Enhanced Allocation, properties %#02x)\n",
+ bei - PCI_EA_BEI_VF_BAR0, res, prop);
+ else
+ dev_printk(KERN_DEBUG, &dev->dev, "BEI %d res: %pR (from Enhanced Allocation, properties %#02x)\n",
+ bei, res, prop);
+
out:
return offset + ent_size;
}