Attachment 224861 Details for Bug 313491 – disable motherboard resources that overlap PCI BARs

[patch] disable motherboard resources that overlap PCI BARs

pnp-supermicro-quirk (text/plain), 1.64 KB, created by Bjorn Helgaas on 2007-10-11 22:37:53 UTC

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Creator: Bjorn Helgaas

Created: 2007-10-11 22:37:53 UTC

Size: 1.64 KB

patch

obsolete

>Index: w/drivers/pnp/quirks.c
>===================================================================
>--- w.orig/drivers/pnp/quirks.c	2007-10-11 15:36:12.000000000 -0600
>+++ w/drivers/pnp/quirks.c	2007-10-11 16:35:49.000000000 -0600
>@@ -108,6 +108,47 @@
> 		       "pnp: SB audio device quirk - increasing port range\n");
> }
> 
>+static int overlaps(resource_size_t start1, resource_size_t end1,
>+		    resource_size_t start2, resource_size_t end2)
>+{
>+	if (start2 <= start1 && start1 < end2)
>+		return 1;
>+	if (start2 <= end1 && end1 < end2)
>+		return 1;
>+	return 0;
>+}
>+
>+
>+#include <linux/pci.h>
>+
>+static void quirk_supermicro_motherboard(struct pnp_dev *dev)
>+{
>+	struct pci_dev *pdev = NULL;
>+	int i, j;
>+
>+	for_each_pci_dev(pdev) {
>+		for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
>+			if (!(pci_resource_flags(pdev, i) & IORESOURCE_MEM) ||
>+			    pci_resource_len(pdev, i) == 0)
>+				continue;
>+
>+			for (j = 0; j < PNP_MAX_MEM; j++) {
>+				if (!pnp_mem_valid(dev, j) ||
>+				    pnp_mem_len(dev, j) == 0)
>+					continue;
>+
>+				if (overlaps(pnp_mem_start(dev, j),
>+					     pnp_mem_end(dev, j),
>+					     pci_resource_start(pdev, i),
>+					     pci_resource_end(pdev, i))) {
>+					dev_warn(&dev->dev, "mem resource overlaps %s BAR %d, disabling\n", pci_name(pdev), i);
>+					pnp_mem_flags(dev, j) = 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_motherboard},
>+	{"PNP0c02", quirk_supermicro_motherboard},
> 	{""}
> };
>

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