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Red Hat Bugzilla – Attachment 291907 Details for
Bug 313491
[PATCH] ignore any ACPI reservation that overlaps with a PCI BAR as being bogus
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[patch]
disable selected Supermicro H8DCE motherboard resources
pnp-supermicro-quirk (text/plain), 2.73 KB, created by
Bjorn Helgaas
on 2008-01-16 22:51:45 UTC
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Description:
disable selected Supermicro H8DCE motherboard resources
Filename:
MIME Type:
Creator:
Bjorn Helgaas
Created:
2008-01-16 22:51:45 UTC
Size:
2.73 KB
patch
obsolete
>PNP: disable Supermicro H8DCE motherboard resources that overlap SATA BARs > >Some Supermicro BIOSes apparently describe a SATA PCI BAR as a motherboard >resource. The PNP system driver claims motherboard resources, and this >prevents the sata_nv driver from requesting it later. > >This patch disables the PNP0C01/PNP0C02 resources so they won't be claimed >by the PNP system driver, so they'll available for sata_nv. > >References: > https://bugzilla.redhat.com/show_bug.cgi?id=280641 > https://bugzilla.redhat.com/show_bug.cgi?id=313491 > http://lkml.org/lkml/2008/1/9/449 > http://thread.gmane.org/gmane.linux.acpi.devel/27312 > >Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> > >Index: work5/drivers/pnp/quirks.c >=================================================================== >--- work5.orig/drivers/pnp/quirks.c 2008-01-04 14:34:43.000000000 -0700 >+++ work5/drivers/pnp/quirks.c 2008-01-16 13:12:53.000000000 -0700 >@@ -17,6 +17,7 @@ > #include <linux/slab.h> > #include <linux/pnp.h> > #include <linux/io.h> >+#include <linux/dmi.h> > #include <linux/kallsyms.h> > #include "base.h" > >@@ -108,6 +109,46 @@ > "pnp: SB audio device quirk - increasing port range\n"); > } > >+static void quirk_supermicro_h8dce_system(struct pnp_dev *dev) >+{ >+ int i; >+ static struct dmi_system_id supermicro_h8dce[] = { >+ { >+ .ident = "Supermicro H8DCE", >+ .matches = { >+ DMI_MATCH(DMI_SYS_VENDOR, "Supermicro"), >+ DMI_MATCH(DMI_PRODUCT_NAME, "H8DCE"), >+ }, >+ }, >+ { } >+ }; >+ >+ if (!dmi_check_system(supermicro_h8dce)) >+ return; >+ >+ /* >+ * On the Supermicro H8DCE, there's a system device with resources >+ * that overlap BAR 6 of the built-in SATA PCI adapter. If the PNP >+ * system device claims them, the sata_nv driver won't be able to. >+ * More details at: >+ * https://bugzilla.redhat.com/show_bug.cgi?id=280641 >+ * https://bugzilla.redhat.com/show_bug.cgi?id=313491 >+ * http://lkml.org/lkml/2008/1/9/449 >+ * http://thread.gmane.org/gmane.linux.acpi.devel/27312 >+ */ >+ for (i = 0; i < PNP_MAX_MEM; i++) { >+ if (pnp_mem_valid(dev, i) && pnp_mem_len(dev, i) && >+ (pnp_mem_start(dev, i) & 0xdfef0000) == 0xdfef0000) { >+ dev_warn(&dev->dev, "disabling 0x%llx-0x%llx to prevent" >+ " conflict with sata_nv PCI device\n", >+ (unsigned long long) pnp_mem_start(dev, i), >+ (unsigned long long) (pnp_mem_start(dev, i) + >+ pnp_mem_len(dev, i) - 1)); >+ pnp_mem_flags(dev, i) = 0; >+ } >+ } >+} >+ > /* > * PnP Quirks > * Cards or devices that need some tweaking due to incomplete resource info >@@ -128,6 +169,8 @@ > {"CTL0043", quirk_sb16audio_resources}, > {"CTL0044", quirk_sb16audio_resources}, > {"CTL0045", quirk_sb16audio_resources}, >+ {"PNP0c01", quirk_supermicro_h8dce_system}, >+ {"PNP0c02", quirk_supermicro_h8dce_system}, > {""} > }; >
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