u32 new, check, mask;
int reg;
- /* Ignore resources for unimplemented BARs and unused resource slots
- for 64 bit BARs. */
+ /*
+ * Ignore resources for unimplemented BARs and unused resource slots
+ * for 64 bit BARs.
+ */
if (!res->flags)
return;
+ /*
+ * Ignore non-moveable resources. This might be legacy resources for
+ * which no functional BAR register exists or another important
+ * system resource we should better not move around in system address
+ * space.
+ */
+ if (res->flags & IORESOURCE_PCI_FIXED)
+ return;
+
pcibios_resource_to_bus(dev, ®ion, res);
- pr_debug(" got res [%lx:%lx] bus [%lx:%lx] flags %lx for "
- "BAR %d of %s\n", res->start, res->end,
- region.start, region.end, res->flags, resno, pci_name(dev));
+ pr_debug(" got res [%llx:%llx] bus [%llx:%llx] flags %lx for "
+ "BAR %d of %s\n", (unsigned long long)res->start,
+ (unsigned long long)res->end,
+ (unsigned long long)region.start,
+ (unsigned long long)region.end,
+ (unsigned long)res->flags, resno, pci_name(dev));
new = region.start | (res->flags & PCI_REGION_FLAG_MASK);
if (res->flags & IORESOURCE_IO)
new & ~PCI_REGION_FLAG_MASK);
}
-int __devinit
-pci_claim_resource(struct pci_dev *dev, int resource)
+int pci_claim_resource(struct pci_dev *dev, int resource)
{
struct resource *res = &dev->resource[resource];
struct resource *root = NULL;
err = insert_resource(root, res);
if (err) {
- printk(KERN_ERR "PCI: %s region %d of %s %s [%lx:%lx]\n",
- root ? "Address space collision on" :
- "No parent found for",
- resource, dtype, pci_name(dev), res->start, res->end);
+ printk(KERN_ERR "PCI: %s region %d of %s %s [%llx:%llx]\n",
+ root ? "Address space collision on" :
+ "No parent found for",
+ resource, dtype, pci_name(dev),
+ (unsigned long long)res->start,
+ (unsigned long long)res->end);
}
return err;
}
-EXPORT_SYMBOL_GPL(pci_claim_resource);
int pci_assign_resource(struct pci_dev *dev, int resno)
{
struct pci_bus *bus = dev->bus;
struct resource *res = dev->resource + resno;
- unsigned long size, min, align;
+ resource_size_t size, min, align;
int ret;
size = res->end - res->start + 1;
min = (res->flags & IORESOURCE_IO) ? PCIBIOS_MIN_IO : PCIBIOS_MIN_MEM;
- /* The bridge resources are special, as their
- size != alignment. Sizing routines return
- required alignment in the "start" field. */
- align = (resno < PCI_BRIDGE_RESOURCES) ? size : res->start;
+
+ align = resource_alignment(res);
+ if (!align) {
+ printk(KERN_ERR "PCI: Cannot allocate resource (bogus "
+ "alignment) %d [%llx:%llx] (flags %lx) of %s\n",
+ resno, (unsigned long long)res->start,
+ (unsigned long long)res->end, res->flags,
+ pci_name(dev));
+ return -EINVAL;
+ }
/* First, try exact prefetching match.. */
ret = pci_bus_alloc_resource(bus, res, size, align, min,
}
if (ret) {
- printk(KERN_ERR "PCI: Failed to allocate %s resource #%d:%lx@%lx for %s\n",
- res->flags & IORESOURCE_IO ? "I/O" : "mem",
- resno, size, res->start, pci_name(dev));
- } else if (resno < PCI_BRIDGE_RESOURCES) {
- pci_update_resource(dev, res, resno);
+ printk(KERN_ERR "PCI: Failed to allocate %s resource "
+ "#%d:%llx@%llx for %s\n",
+ res->flags & IORESOURCE_IO ? "I/O" : "mem",
+ resno, (unsigned long long)size,
+ (unsigned long long)res->start, pci_name(dev));
+ } else {
+ res->flags &= ~IORESOURCE_STARTALIGN;
+ if (resno < PCI_BRIDGE_RESOURCES)
+ pci_update_resource(dev, res, resno);
}
return ret;
}
-#ifdef CONFIG_EMBEDDED
+#if 0
int pci_assign_resource_fixed(struct pci_dev *dev, int resno)
{
struct pci_bus *bus = dev->bus;
#endif
/* Sort resources by alignment */
-void __devinit
-pdev_sort_resources(struct pci_dev *dev, struct resource_list *head)
+void pdev_sort_resources(struct pci_dev *dev, struct resource_list *head)
{
int i;
for (i = 0; i < PCI_NUM_RESOURCES; i++) {
struct resource *r;
struct resource_list *list, *tmp;
- unsigned long r_align;
+ resource_size_t r_align;
r = &dev->resource[i];
- r_align = r->end - r->start;
-
+
+ if (r->flags & IORESOURCE_PCI_FIXED)
+ continue;
+
if (!(r->flags) || r->parent)
continue;
+
+ r_align = resource_alignment(r);
if (!r_align) {
- printk(KERN_WARNING "PCI: Ignore bogus resource %d "
- "[%lx:%lx] of %s\n",
- i, r->start, r->end, pci_name(dev));
+ printk(KERN_WARNING "PCI: bogus alignment of resource "
+ "%d [%llx:%llx] (flags %lx) of %s\n",
+ i, (unsigned long long)r->start,
+ (unsigned long long)r->end, r->flags,
+ pci_name(dev));
continue;
}
- r_align = (i < PCI_BRIDGE_RESOURCES) ? r_align + 1 : r->start;
for (list = head; ; list = list->next) {
- unsigned long align = 0;
+ resource_size_t align = 0;
struct resource_list *ln = list->next;
- int idx;
- if (ln) {
- idx = ln->res - &ln->dev->resource[0];
- align = (idx < PCI_BRIDGE_RESOURCES) ?
- ln->res->end - ln->res->start + 1 :
- ln->res->start;
- }
+ if (ln)
+ align = resource_alignment(ln->res);
+
if (r_align > align) {
tmp = kmalloc(sizeof(*tmp), GFP_KERNEL);
if (!tmp)
}
}
}
+
+int pci_enable_resources(struct pci_dev *dev, int mask)
+{
+ u16 cmd, old_cmd;
+ int i;
+ struct resource *r;
+
+ pci_read_config_word(dev, PCI_COMMAND, &cmd);
+ old_cmd = cmd;
+
+ for (i = 0; i < PCI_NUM_RESOURCES; i++) {
+ if (!(mask & (1 << i)))
+ continue;
+
+ r = &dev->resource[i];
+
+ if (!(r->flags & (IORESOURCE_IO | IORESOURCE_MEM)))
+ continue;
+ if ((i == PCI_ROM_RESOURCE) &&
+ (!(r->flags & IORESOURCE_ROM_ENABLE)))
+ continue;
+
+ if (!r->parent) {
+ dev_err(&dev->dev, "device not available because of "
+ "BAR %d [%llx:%llx] collisions\n", i,
+ (unsigned long long) r->start,
+ (unsigned long long) r->end);
+ return -EINVAL;
+ }
+
+ if (r->flags & IORESOURCE_IO)
+ cmd |= PCI_COMMAND_IO;
+ if (r->flags & IORESOURCE_MEM)
+ cmd |= PCI_COMMAND_MEMORY;
+ }
+
+ if (cmd != old_cmd) {
+ dev_info(&dev->dev, "enabling device (%04x -> %04x)\n",
+ old_cmd, cmd);
+ pci_write_config_word(dev, PCI_COMMAND, cmd);
+ }
+ return 0;
+}
projects / linux-2.6 / blobdiff