struct pci_bus_region region;
u32 new, check, mask;
int reg;
+ enum pci_bar_type type;
struct resource *res = dev->resource + resno;
/*
pcibios_resource_to_bus(dev, ®ion, 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;
else
mask = (u32)PCI_BASE_ADDRESS_MEM_MASK;
- if (resno < 6) {
- reg = PCI_BASE_ADDRESS_0 + 4 * resno;
- } else if (resno == PCI_ROM_RESOURCE) {
+ reg = pci_resource_bar(dev, resno, &type);
+ if (!reg)
+ return;
+ if (type != pci_bar_unknown) {
if (!(res->flags & IORESOURCE_ROM_ENABLE))
return;
new |= PCI_ROM_ADDRESS_ENABLE;
- reg = dev->rom_base_reg;
- } else {
- /* Hmm, non-standard resource. */
-
- return; /* kill uninitialised var warning */
}
pci_write_config_dword(dev, reg, new);
}
}
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)
{
struct resource *res = &dev->resource[resource];
- struct resource *root = NULL;
- char *dtype = resource < PCI_BRIDGE_RESOURCES ? "device" : "bridge";
+ struct resource *root;
int err;
- root = pcibios_select_root(dev, res);
-
- err = -EINVAL;
- if (root != NULL)
- err = insert_resource(root, res);
-
- if (err) {
- dev_err(&dev->dev, "BAR %d: %s of %s %pR\n",
- resource,
- root ? "address space collision on" :
- "no parent found for",
- dtype, res);
+ root = pci_find_parent_resource(dev, 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);
-int pci_assign_resource(struct pci_dev *dev, int resno)
+#ifdef CONFIG_PCI_QUIRKS
+void pci_disable_bridge_window(struct pci_dev *dev)
+{
+ dev_info(&dev->dev, "disabling bridge mem windows\n");
+
+ /* MMIO Base/Limit */
+ pci_write_config_dword(dev, PCI_MEMORY_BASE, 0x0000fff0);
+
+ /* Prefetchable MMIO Base/Limit */
+ pci_write_config_dword(dev, PCI_PREF_LIMIT_UPPER32, 0);
+ pci_write_config_dword(dev, PCI_PREF_MEMORY_BASE, 0x0000fff0);
+ pci_write_config_dword(dev, PCI_PREF_BASE_UPPER32, 0xffffffff);
+}
+#endif /* CONFIG_PCI_QUIRKS */
+
+static int __pci_assign_resource(struct pci_bus *bus, struct pci_dev *dev,
+ int resno)
{
- struct pci_bus *bus = dev->bus;
struct resource *res = dev->resource + resno;
resource_size_t size, min, align;
int ret;
size = resource_size(res);
min = (res->flags & IORESOURCE_IO) ? PCIBIOS_MIN_IO : PCIBIOS_MIN_MEM;
-
- align = resource_alignment(res);
- if (!align) {
- dev_info(&dev->dev, "BAR %d: can't allocate resource (bogus "
- "alignment) %pR flags %#lx\n",
- resno, res, res->flags);
- return -EINVAL;
- }
+ align = pci_resource_alignment(dev, res);
/* First, try exact prefetching match.. */
ret = pci_bus_alloc_resource(bus, res, size, align, min,
pcibios_align_resource, dev);
}
- if (ret) {
- dev_info(&dev->dev, "BAR %d: can't allocate %s resource %pR\n",
- resno, res->flags & IORESOURCE_IO ? "I/O" : "mem", res);
- } else {
+ 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);
}
return ret;
}
-#if 0
-int pci_assign_resource_fixed(struct pci_dev *dev, int resno)
+int pci_assign_resource(struct pci_dev *dev, int resno)
{
- struct pci_bus *bus = dev->bus;
struct resource *res = dev->resource + resno;
- unsigned int type_mask;
- int i, ret = -EBUSY;
-
- type_mask = IORESOURCE_IO | IORESOURCE_MEM | IORESOURCE_PREFETCH;
+ resource_size_t align;
+ struct pci_bus *bus;
+ int ret;
+ char *type;
- for (i = 0; i < PCI_BUS_NUM_RESOURCES; i++) {
- struct resource *r = bus->resource[i];
- if (!r)
- continue;
+ align = pci_resource_alignment(dev, res);
+ if (!align) {
+ dev_info(&dev->dev, "BAR %d: can't assign %pR "
+ "(bogus alignment)\n", resno, res);
+ return -EINVAL;
+ }
- /* type_mask must match */
- if ((res->flags ^ r->flags) & type_mask)
+ bus = dev->bus;
+ while ((ret = __pci_assign_resource(bus, dev, resno))) {
+ if (bus->parent && bus->self->transparent)
+ bus = bus->parent;
+ else
+ bus = NULL;
+ if (bus)
continue;
-
- ret = request_resource(r, res);
-
- if (ret == 0)
- break;
+ break;
}
if (ret) {
- dev_err(&dev->dev, "BAR %d: can't allocate %s resource %pR\n",
- resno, res->flags & IORESOURCE_IO ? "I/O" : "mem", res);
- } else if (resno < PCI_BRIDGE_RESOURCES) {
- pci_update_resource(dev, resno);
+ 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;
}
-EXPORT_SYMBOL_GPL(pci_assign_resource_fixed);
-#endif
/* Sort resources by alignment */
void pdev_sort_resources(struct pci_dev *dev, struct resource_list *head)
if (!(r->flags) || r->parent)
continue;
- r_align = resource_alignment(r);
+ 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) {
struct resource_list *ln = list->next;
if (ln)
- align = resource_alignment(ln->res);
+ align = pci_resource_alignment(ln->dev, ln->res);
if (r_align > align) {
tmp = kmalloc(sizeof(*tmp), GFP_KERNEL);
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;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff