Messages in this thread Patch in this message | | | Date | Wed, 11 Jan 2012 21:06:51 -0800 | Subject | Re: [Bug 41722] Clevo M5X0JE hangs in ACPI init | From | Yinghai Lu <> |
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On Tue, Jan 10, 2012 at 11:04 PM, Rogério Brito <rbrito@ime.usp.br> wrote: > Hi, Yinghai. > > On Tue, Jan 10, 2012 at 03:07, Yinghai Lu <yinghai@kernel.org> wrote: >> On Mon, Jan 9, 2012 at 6:41 PM, Rogério Brito <rbrito@ime.usp.br> wrote: >> I have some pending patches that may fix bridge resource resizing. >> >> Can you try them at >> >> git://git.kernel.org/pub/scm/linux/kernel/git/yinghai/linux-yinghai.git >> for-pci2 >> >> also please boot with "debug ignore_loglevel" > > Grabbing it right now. Will report it after I get some sleep (5AM here).
please try attached patch, it will fix one bios wrong setting.
> >> BTW, did you try boot with "pci=use_crs" and not with "acpi=off" ? > > I tried, but I got a hang (both with Linux---many versions---and with > FreeBSD). With Linux I get: > > http://www.ime.usp.br/~rbrito/linux/clevo/boot-without-acpi-off.jpg >
need to work on that later.
Yinghai Subject: [PATCH] PCI: Disable cardbus bridge MEM1 pref CTL
Some BIOS enable both pref for MEM0 and MEM1.
but we assume MEM1 is non-pref...
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
--- drivers/pci/setup-bus.c | 8 ++++++++ 1 file changed, 8 insertions(+)
Index: linux-2.6/drivers/pci/setup-bus.c =================================================================== --- linux-2.6.orig/drivers/pci/setup-bus.c +++ linux-2.6/drivers/pci/setup-bus.c @@ -774,6 +774,14 @@ static void pci_bus_size_cardbus(struct if (realloc_head) add_to_list(realloc_head, bridge, b_res+1, pci_cardbus_io_size, 0 /* dont care */); + /* MEM1 must not be pref mmio */ + pci_read_config_word(bridge, PCI_CB_BRIDGE_CONTROL, &ctrl); + if (ctrl & PCI_CB_BRIDGE_CTL_PREFETCH_MEM1) { + ctrl &= ~PCI_CB_BRIDGE_CTL_PREFETCH_MEM1; + pci_write_config_word(bridge, PCI_CB_BRIDGE_CONTROL, ctrl); + pci_read_config_word(bridge, PCI_CB_BRIDGE_CONTROL, &ctrl); + } + /* * Check whether prefetchable memory is supported * by this bridge. | |