diff options
| author | Ivan Kokshaysky <ink@jurassic.park.msu.ru> | 2005-08-03 02:59:47 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-08-02 18:21:25 -0700 |
| commit | 71db63acff69618b3d9d3114bd061938150e146b (patch) | |
| tree | 49c43f9115648cd730e4a11e455877ad5ee680c5 | |
| parent | 688d191821de7893043f5a37970472627aaffa4e (diff) | |
| download | linux-3.10-71db63acff69618b3d9d3114bd061938150e146b.tar.gz linux-3.10-71db63acff69618b3d9d3114bd061938150e146b.tar.bz2 linux-3.10-71db63acff69618b3d9d3114bd061938150e146b.zip | |
[PATCH] increase PCIBIOS_MIN_IO on x86
There is a number of x86 laptops that have some non-PCI IO ports
in the 0x1000-0x1fff range, and it's quite hard to control the correct
order of resource allocation between PCI and other subsystems controlling
these ports. Especially with modular kernel.
So just increase PCIBIOS_MIN_IO to 0x4000 to prevent any new PCI
resource allocations in the problematic range (this limitation must
apply _only_ to the root bus resources - see Linus' change in
pci_bus_alloc_resource). As PCIBIOS_MIN_IO and PCIBIOS_MIN_CARDBUS_IO
are the same now on i386 and x86-64, we can remove the latter.
Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | include/asm-i386/pci.h | 4 | ||||
| -rw-r--r-- | include/asm-x86_64/pci.h | 4 |
2 files changed, 2 insertions, 6 deletions
diff --git a/include/asm-i386/pci.h b/include/asm-i386/pci.h index 78c85985aee..2cbab30734d 100644 --- a/include/asm-i386/pci.h +++ b/include/asm-i386/pci.h @@ -18,11 +18,9 @@ extern unsigned int pcibios_assign_all_busses(void); #define pcibios_scan_all_fns(a, b) 0 extern unsigned long pci_mem_start; -#define PCIBIOS_MIN_IO 0x1000 +#define PCIBIOS_MIN_IO 0x4000 #define PCIBIOS_MIN_MEM (pci_mem_start) -#define PCIBIOS_MIN_CARDBUS_IO 0x4000 - void pcibios_config_init(void); struct pci_bus * pcibios_scan_root(int bus); diff --git a/include/asm-x86_64/pci.h b/include/asm-x86_64/pci.h index eeb3088a1c9..9c4527eb55e 100644 --- a/include/asm-x86_64/pci.h +++ b/include/asm-x86_64/pci.h @@ -22,11 +22,9 @@ extern unsigned int pcibios_assign_all_busses(void); extern int no_iommu, force_iommu; extern unsigned long pci_mem_start; -#define PCIBIOS_MIN_IO 0x1000 +#define PCIBIOS_MIN_IO 0x4000 #define PCIBIOS_MIN_MEM (pci_mem_start) -#define PCIBIOS_MIN_CARDBUS_IO 0x4000 - void pcibios_config_init(void); struct pci_bus * pcibios_scan_root(int bus); extern int (*pci_config_read)(int seg, int bus, int dev, int fn, int reg, int len, u32 *value); |