Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1373910
| From | Yinghai Lu <yinghai@kernel.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v11 13/60] PCI: Only treat non-pref mmio64 as pref if all bridges have MEM_64 |
| Date | 2016-04-08 02:40 +0200 |
| Message-ID | <rlsCU-3LP-47@gated-at.bofh.it> (permalink) |
| References | <rlsjv-3zZ-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
If any bridge up to root only have 32bit pref mmio, We don't need to
treat device non-pref mmio64 as as pref mmio64.
We need to move pci_bridge_check_ranges calling early.
For parent bridges pref mmio BAR may not allocated by BIOS, res flags
is still 0, we need to have it correct set before we check them for
child device resources.
-v2: check all bus resources instead of just res[15].
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Tested-by: Khalid Aziz <khalid.aziz@oracle.com>
---
drivers/pci/setup-bus.c | 31 +++++++++++++++++++++++++++++--
1 file changed, 29 insertions(+), 2 deletions(-)
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index b3b1565..ffb1941 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -738,6 +738,29 @@ int pci_claim_bridge_resource(struct pci_dev *bridge, int i)
return -EINVAL;
}
+static bool pci_up_path_over_pref_mem64(struct pci_bus *bus)
+{
+ if (pci_is_root_bus(bus))
+ return true;
+
+ if (bus->self) {
+ int i;
+ bool found = false;
+ struct resource *res;
+
+ pci_bus_for_each_resource(bus, res, i)
+ if (res->flags & IORESOURCE_MEM_64) {
+ found = true;
+ break;
+ }
+
+ if (!found)
+ return false;
+ }
+
+ return pci_up_path_over_pref_mem64(bus->parent);
+}
+
int pci_resource_pref_compatible(const struct pci_dev *dev,
struct resource *res)
{
@@ -746,7 +769,8 @@ int pci_resource_pref_compatible(const struct pci_dev *dev,
if ((res->flags & IORESOURCE_MEM) &&
(res->flags & IORESOURCE_MEM_64) &&
- dev->on_all_pcie_path)
+ dev->on_all_pcie_path &&
+ pci_up_path_over_pref_mem64(dev->bus))
return res->flags | IORESOURCE_PREFETCH;
return res->flags;
@@ -1239,6 +1263,10 @@ void __pci_bus_size_bridges(struct pci_bus *bus, struct list_head *realloc_head)
struct resource *b_res;
int ret;
+ if (!pci_is_root_bus(bus) &&
+ (bus->self->class >> 8) == PCI_CLASS_BRIDGE_PCI)
+ pci_bridge_check_ranges(bus);
+
list_for_each_entry(dev, &bus->devices, bus_list) {
struct pci_bus *b = dev->subordinate;
if (!b)
@@ -1266,7 +1294,6 @@ void __pci_bus_size_bridges(struct pci_bus *bus, struct list_head *realloc_head)
break;
case PCI_CLASS_BRIDGE_PCI:
- pci_bridge_check_ranges(bus);
if (bus->self->is_hotplug_bridge) {
additional_io_size = pci_hotplug_io_size;
additional_mem_size = pci_hotplug_mem_size;
--
1.8.4.5
Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
[PATCH v11 00/60] PCI: Resource allocation cleanup for v4.7 Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:30 +0200
[PATCH v11 22/60] PCI: Get new realloc size for bridge for last try Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:30 +0200
[PATCH v11 42/60] PCI: Skip required+optional if there is no optional Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:30 +0200
[PATCH v11 25/60] PCI: Reuse res_to_dev_res() in reassign_resources_sorted() Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:30 +0200
[PATCH v11 29/60] PCI: Don't add too much optional size for hotplug bridge MMIO Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:30 +0200
[PATCH v11 35/60] PCI: Simplify res reference using in __assign_resources_sorted() Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:30 +0200
[PATCH v11 32/60] PCI: Rename pdev_sort_resources() to pdev_assign_resources_prepare() Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:30 +0200
[PATCH v11 34/60] PCI: Add debug printout during releasing partial assigned resources Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:30 +0200
[PATCH v11 26/60] PCI: Use correct align for optional only resources during sorting Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:30 +0200
[PATCH v11 38/60] PCI: Check if resource is allocated before trying to assign one Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:30 +0200
[PATCH v11 31/60] PCI: Remove duplicated code for resource sorting Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:30 +0200
[PATCH v11 56/60] PCI: Add debug print out for min_align and alt_size Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:30 +0200
[PATCH v11 12/60] PCI: Check pref compatible bit for mem64 resource of PCIe device Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:30 +0200
[PATCH v11 58/60] PCI: Introduce resource_disabled() Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:30 +0200
[PATCH v11 24/60] PCI: Cleanup res_to_dev_res() printout Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:30 +0200
[PATCH v11 39/60] PCI: Separate out save_resources()/restore_resources() Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:30 +0200
[PATCH v11 49/60] PCI: Don't add too much io port for hotplug bridge with old size Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:30 +0200
[PATCH v11 54/60] resources: Make allocate_resource() return best fit resource Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:30 +0200
[PATCH v11 46/60] PCI: Fix size calculation with old_size on rescan path Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:30 +0200
[PATCH v11 48/60] PCI: Move ISA io port align out of calculate_iosize() Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:30 +0200
[PATCH v11 02/60] alpha/PCI: Only check iomem_is_exclusive() for IORESOURCE_MEM, not IORESOURCE_IO Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:30 +0200
[PATCH v11 41/60] PCI: Separate required+optional assigning to another function Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:30 +0200
[PATCH v11 33/60] PCI: Treat ROM resource as optional during realloc Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:30 +0200
[PATCH v11 28/60] PCI: Optimize bus align/size calculation for optional during sizing Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:40 +0200
[PATCH v11 04/60] sparc/PCI: Use correct offset for bus address to resource Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:40 +0200
[PATCH v11 23/60] PCI: Don't release sibling bridge resources during hotplug Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:40 +0200
[PATCH v11 05/60] sparc/PCI: Reserve legacy mmio after PCI mmio Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:40 +0200
[PATCH v11 53/60] PCI: Kill macro checking for bus io port sizing Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:40 +0200
[PATCH v11 03/60] PCI: Add pci_find_bus_resource() Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:40 +0200
[PATCH v11 11/60] OF/PCI: Add IORESOURCE_MEM_64 for 64-bit resource Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:40 +0200
[PATCH v11 06/60] sparc/PCI: Add IORESOURCE_MEM_64 for 64-bit resource in OF parsing Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:40 +0200
[PATCH v11 08/60] PCI: Kill wrong quirk about M7101 Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:40 +0200
[PATCH v11 14/60] PCI: Add has_mem64 for struct host_bridge Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:40 +0200
[PATCH v11 30/60] PCI: Reorder resources list for required/optional resources Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:40 +0200
[PATCH v11 44/60] PCI: Add alt_size ressource allocation support Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:40 +0200
Re: [PATCH v11 44/60] PCI: Add alt_size ressource allocation support Linus Torvalds <torvalds@linux-foundation.org> - 2016-04-08 03:00 +0200
Re: [PATCH v11 44/60] PCI: Add alt_size ressource allocation support Yinghai Lu <yinghai@kernel.org> - 2016-04-08 08:00 +0200
Re: [PATCH v11 44/60] PCI: Add alt_size ressource allocation support Benjamin Herrenschmidt <benh@kernel.crashing.org> - 2016-04-08 08:40 +0200
[PATCH v11 13/60] PCI: Only treat non-pref mmio64 as pref if all bridges have MEM_64 Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:40 +0200
[PATCH v11 19/60] PCI: Set resource to FIXED for LSI devices Yinghai Lu <yinghai@kernel.org> - 2016-04-08 02:40 +0200
Re: [PATCH v11 00/60] PCI: Resource allocation cleanup for v4.7 Linus Torvalds <torvalds@linux-foundation.org> - 2016-04-08 03:00 +0200
Re: [PATCH v11 00/60] PCI: Resource allocation cleanup for v4.7 Yinghai Lu <yinghai@kernel.org> - 2016-04-09 07:40 +0200
[PATCH v11 50/60] PCI: Unify calculate_size() for io port and MMIO Yinghai Lu <yinghai@kernel.org> - 2016-04-08 03:20 +0200
csiph-web