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Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6

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* 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (27 commits)
  PCI: Don't use dmi_name_in_vendors in quirk
  PCI: remove unused AER functions
  PCI/sysfs: move bus cpuaffinity to class dev_attrs
  PCI: add rescan to /sys/.../pci_bus/.../
  PCI: update bridge resources to get more big ranges when allocating space (again)
  KVM: Use pci_store/load_saved_state() around VM device usage
  PCI: Add interfaces to store and load the device saved state
  PCI: Track the size of each saved capability data area
  PCI/e1000e: Add and use pci_disable_link_state_locked()
  x86/PCI: derive pcibios_last_bus from ACPI MCFG
  PCI: add latency tolerance reporting enable/disable support
  PCI: add OBFF enable/disable support
  PCI: add ID-based ordering enable/disable support
  PCI hotplug: acpiphp: assume device is in state D0 after powering on a slot.
  PCI: Set PCIE maxpayload for card during hotplug insertion
  PCI/ACPI: Report _OSC control mask returned on failure to get control
  x86/PCI: irq and pci_ids patch for Intel Panther Point DeviceIDs
  PCI: handle positive error codes
  PCI: check pci_vpd_pci22_wait() return
  PCI: Use ICH6_GPIO_EN in ich6_lpc_acpi_gpio
  ...

Fix up trivial conflicts in include/linux/pci_ids.h: commit a6e5e2be44
moved the intel SMBUS ID definitons to the i2c-i801.c driver.
This commit is contained in:
Linus Torvalds
2011-05-23 15:39:34 -07:00
parent a77febbef1 9251bac97d
commit 5e152b4c9e
30 changed files with 818 additions and 177 deletions
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125
drivers/pci/setup-bus.c
View File

@@ -991,30 +991,139 @@ static void pci_bus_dump_resources(struct pci_bus *bus)
}
}
static int __init pci_bus_get_depth(struct pci_bus *bus)
{
int depth = 0;
struct pci_dev *dev;
list_for_each_entry(dev, &bus->devices, bus_list) {
int ret;
struct pci_bus *b = dev->subordinate;
if (!b)
continue;
ret = pci_bus_get_depth(b);
if (ret + 1 > depth)
depth = ret + 1;
}
return depth;
}
static int __init pci_get_max_depth(void)
{
int depth = 0;
struct pci_bus *bus;
list_for_each_entry(bus, &pci_root_buses, node) {
int ret;
ret = pci_bus_get_depth(bus);
if (ret > depth)
depth = ret;
}
return depth;
}
/*
* first try will not touch pci bridge res
* second and later try will clear small leaf bridge res
* will stop till to the max deepth if can not find good one
*/
void __init
pci_assign_unassigned_resources(void)
{
struct pci_bus *bus;
struct resource_list_x add_list; /* list of resources that
want additional resources */
int tried_times = 0;
enum release_type rel_type = leaf_only;
struct resource_list_x head, *list;
unsigned long type_mask = IORESOURCE_IO | IORESOURCE_MEM |
IORESOURCE_PREFETCH;
unsigned long failed_type;
int max_depth = pci_get_max_depth();
int pci_try_num;
head.next = NULL;
add_list.next = NULL;
pci_try_num = max_depth + 1;
printk(KERN_DEBUG "PCI: max bus depth: %d pci_try_num: %d\n",
max_depth, pci_try_num);
again:
/* Depth first, calculate sizes and alignments of all
subordinate buses. */
list_for_each_entry(bus, &pci_root_buses, node) {
list_for_each_entry(bus, &pci_root_buses, node)
__pci_bus_size_bridges(bus, &add_list);
}
/* Depth last, allocate resources and update the hardware. */
list_for_each_entry(bus, &pci_root_buses, node) {
__pci_bus_assign_resources(bus, &add_list, NULL);
pci_enable_bridges(bus);
}
list_for_each_entry(bus, &pci_root_buses, node)
__pci_bus_assign_resources(bus, &add_list, &head);
BUG_ON(add_list.next);
tried_times++;
/* any device complain? */
if (!head.next)
goto enable_and_dump;
failed_type = 0;
for (list = head.next; list;) {
failed_type |= list->flags;
list = list->next;
}
/*
* io port are tight, don't try extra
* or if reach the limit, don't want to try more
*/
failed_type &= type_mask;
if ((failed_type == IORESOURCE_IO) || (tried_times >= pci_try_num)) {
free_list(resource_list_x, &head);
goto enable_and_dump;
}
printk(KERN_DEBUG "PCI: No. %d try to assign unassigned res\n",
tried_times + 1);
/* third times and later will not check if it is leaf */
if ((tried_times + 1) > 2)
rel_type = whole_subtree;
/*
* Try to release leaf bridge's resources that doesn't fit resource of
* child device under that bridge
*/
for (list = head.next; list;) {
bus = list->dev->bus;
pci_bus_release_bridge_resources(bus, list->flags & type_mask,
rel_type);
list = list->next;
}
/* restore size and flags */
for (list = head.next; list;) {
struct resource *res = list->res;
res->start = list->start;
res->end = list->end;
res->flags = list->flags;
if (list->dev->subordinate)
res->flags = 0;
list = list->next;
}
free_list(resource_list_x, &head);
goto again;
enable_and_dump:
/* Depth last, update the hardware. */
list_for_each_entry(bus, &pci_root_buses, node)
pci_enable_bridges(bus);
/* dump the resource on buses */
list_for_each_entry(bus, &pci_root_buses, node) {
list_for_each_entry(bus, &pci_root_buses, node)
pci_bus_dump_resources(bus);
}
}
void pci_assign_unassigned_bridge_resources(struct pci_dev *bridge)