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path: root/drivers/pci/setup-res.c
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Diffstat (limited to 'drivers/pci/setup-res.c')
-rw-r--r--drivers/pci/setup-res.c68
1 files changed, 35 insertions, 33 deletions
diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c
index c54526b206b..7d678bb15ff 100644
--- a/drivers/pci/setup-res.c
+++ b/drivers/pci/setup-res.c
@@ -51,12 +51,6 @@ void pci_update_resource(struct pci_dev *dev, int resno)
pcibios_resource_to_bus(dev, &region, res);
- dev_dbg(&dev->dev, "BAR %d: got res %pR bus [%#llx-%#llx] "
- "flags %#lx\n", resno, res,
- (unsigned long long)region.start,
- (unsigned long long)region.end,
- (unsigned long)res->flags);
-
new = region.start | (res->flags & PCI_REGION_FLAG_MASK);
if (res->flags & IORESOURCE_IO)
mask = (u32)PCI_BASE_ADDRESS_IO_MASK;
@@ -91,9 +85,9 @@ void pci_update_resource(struct pci_dev *dev, int resno)
}
}
res->flags &= ~IORESOURCE_UNSET;
- dev_dbg(&dev->dev, "BAR %d: moved to bus [%#llx-%#llx] flags %#lx\n",
- resno, (unsigned long long)region.start,
- (unsigned long long)region.end, res->flags);
+ dev_info(&dev->dev, "BAR %d: set to %pR (PCI address [%#llx-%#llx]\n",
+ resno, res, (unsigned long long)region.start,
+ (unsigned long long)region.end);
}
int pci_claim_resource(struct pci_dev *dev, int resource)
@@ -103,20 +97,17 @@ int pci_claim_resource(struct pci_dev *dev, int resource)
int err;
root = pci_find_parent_resource(dev, res);
-
- err = -EINVAL;
- if (root != NULL)
- err = request_resource(root, res);
-
- if (err) {
- const char *dtype = resource < PCI_BRIDGE_RESOURCES ? "device" : "bridge";
- dev_err(&dev->dev, "BAR %d: %s of %s %pR\n",
- resource,
- root ? "address space collision on" :
- "no parent found for",
- dtype, res);
+ if (!root) {
+ dev_err(&dev->dev, "no compatible bridge window for %pR\n",
+ res);
+ return -EINVAL;
}
+ err = request_resource(root, res);
+ if (err)
+ dev_err(&dev->dev,
+ "address space collision: %pR already in use\n", res);
+
return err;
}
EXPORT_SYMBOL(pci_claim_resource);
@@ -124,7 +115,7 @@ EXPORT_SYMBOL(pci_claim_resource);
#ifdef CONFIG_PCI_QUIRKS
void pci_disable_bridge_window(struct pci_dev *dev)
{
- dev_dbg(&dev->dev, "Disabling bridge window.\n");
+ dev_info(&dev->dev, "disabling bridge mem windows\n");
/* MMIO Base/Limit */
pci_write_config_dword(dev, PCI_MEMORY_BASE, 0x0000fff0);
@@ -165,6 +156,7 @@ static int __pci_assign_resource(struct pci_bus *bus, struct pci_dev *dev,
if (!ret) {
res->flags &= ~IORESOURCE_STARTALIGN;
+ dev_info(&dev->dev, "BAR %d: assigned %pR\n", resno, res);
if (resno < PCI_BRIDGE_RESOURCES)
pci_update_resource(dev, resno);
}
@@ -178,12 +170,12 @@ int pci_assign_resource(struct pci_dev *dev, int resno)
resource_size_t align;
struct pci_bus *bus;
int ret;
+ char *type;
align = pci_resource_alignment(dev, res);
if (!align) {
- dev_info(&dev->dev, "BAR %d: can't allocate resource (bogus "
- "alignment) %pR flags %#lx\n",
- resno, res, res->flags);
+ dev_info(&dev->dev, "BAR %d: can't assign %pR "
+ "(bogus alignment)\n", resno, res);
return -EINVAL;
}
@@ -198,9 +190,20 @@ int pci_assign_resource(struct pci_dev *dev, int resno)
break;
}
- if (ret)
- dev_info(&dev->dev, "BAR %d: can't allocate %s resource %pR\n",
- resno, res->flags & IORESOURCE_IO ? "I/O" : "mem", res);
+ if (ret) {
+ if (res->flags & IORESOURCE_MEM)
+ if (res->flags & IORESOURCE_PREFETCH)
+ type = "mem pref";
+ else
+ type = "mem";
+ else if (res->flags & IORESOURCE_IO)
+ type = "io";
+ else
+ type = "unknown";
+ dev_info(&dev->dev,
+ "BAR %d: can't assign %s (size %#llx)\n",
+ resno, type, (unsigned long long) resource_size(res));
+ }
return ret;
}
@@ -225,9 +228,8 @@ void pdev_sort_resources(struct pci_dev *dev, struct resource_list *head)
r_align = pci_resource_alignment(dev, r);
if (!r_align) {
- dev_warn(&dev->dev, "BAR %d: bogus alignment "
- "%pR flags %#lx\n",
- i, r, r->flags);
+ dev_warn(&dev->dev, "BAR %d: %pR has bogus alignment\n",
+ i, r);
continue;
}
for (list = head; ; list = list->next) {
@@ -274,8 +276,8 @@ int pci_enable_resources(struct pci_dev *dev, int mask)
continue;
if (!r->parent) {
- dev_err(&dev->dev, "device not available because of "
- "BAR %d %pR collisions\n", i, r);
+ dev_err(&dev->dev, "device not available "
+ "(can't reserve %pR)\n", r);
return -EINVAL;
}