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authorIvan Kokshaysky <ink@jurassic.park.msu.ru>2005-08-30 18:48:52 +0400
committerLinus Torvalds <torvalds@g5.osdl.org>2005-08-30 11:14:48 -0700
commit81d4af1340badcd2100c84fbd1bfd13156de41aa (patch)
tree67b7302a238eb930c7416d00b3a316def6396b3d /drivers/pci/setup-bus.c
parentae11be6f37dfa140b6c2d1a53b307ef57da69a04 (diff)
downloadop-kernel-dev-81d4af1340badcd2100c84fbd1bfd13156de41aa.zip
op-kernel-dev-81d4af1340badcd2100c84fbd1bfd13156de41aa.tar.gz
[PATCH] x86: pci_assign_unassigned_resources() update
I had some time to think about PCI assign issues in 2.6.13-rc series. The major problem here is that we call pci_assign_unassigned_resources() way too early - at subsys_initcall level. Therefore we give no chances to ACPI and PnP routines (called at fs_initcall level) to reserve their respective resources properly, as the comments in drivers/pnp/system.c and drivers/acpi/motherboard.c suggest: /** * Reserve motherboard resources after PCI claim BARs, * but before PCI assign resources for uninitialized PCI devices */ So I moved the pci_assign_unassigned_resources() call to pcibios_assign_resources() (fs_initcall), which should hopefully fix a lot of problems and make PCIBIOS_MIN_IO tweaks unnecessary. Other changes: - remove resource assignment code from pcibios_assign_resources(), since it duplicates pci_assign_unassigned_resources() functionality and actually does nothing in 2.6.13; - modify ROM assignment code as per Ben's suggestion: try to use firmware settings by default (if PCI_ASSIGN_ROMS is not set); - set CARDBUS_IO_SIZE back to 4K as it's a wonderful stress test for various setups. Confirmed by Tero Roponen <teanropo@cc.jyu.fi> (who had problems with the 4kB CardBus IO size previously). Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/pci/setup-bus.c')
-rw-r--r--drivers/pci/setup-bus.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index 6d864c5..6b0e646 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -40,7 +40,7 @@
* FIXME: IO should be max 256 bytes. However, since we may
* have a P2P bridge below a cardbus bridge, we need 4K.
*/
-#define CARDBUS_IO_SIZE (256)
+#define CARDBUS_IO_SIZE (4*1024)
#define CARDBUS_MEM_SIZE (32*1024*1024)
static void __devinit
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