#include <linux/slab.h>
#include <linux/pnp.h>
#include <linux/io.h>
-#include <linux/dmi.h>
#include <linux/kallsyms.h>
#include "base.h"
port2->max += 0x400;
port3->min += 0x800;
port3->max += 0x800;
+ dev_info(&dev->dev,
+ "AWE32 quirk - added ioports 0x%lx and 0x%lx\n",
+ (unsigned long)port2->min,
+ (unsigned long)port3->min);
}
- printk(KERN_INFO "pnp: AWE32 quirk - adding two ports\n");
}
static void quirk_cmi8330_resources(struct pnp_dev *dev)
IORESOURCE_DMA_8BIT)
dma->map = 0x000A;
}
- printk(KERN_INFO "pnp: CMI8330 quirk - fixing interrupts and dma\n");
+ dev_info(&dev->dev, "CMI8330 quirk - forced possible IRQs to 5, 7, 10 "
+ "and DMA channels to 1, 3\n");
}
static void quirk_sb16audio_resources(struct pnp_dev *dev)
changed = 1;
}
if (changed)
- printk(KERN_INFO
- "pnp: SB audio device quirk - increasing port range\n");
+ dev_info(&dev->dev, "SB audio device quirk - increased port range\n");
}
-static void quirk_supermicro_h8dce_system(struct pnp_dev *dev)
+
+#include <linux/pci.h>
+
+static void quirk_system_pci_resources(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;
+ struct pci_dev *pdev = NULL;
+ struct resource *res;
+ resource_size_t pnp_start, pnp_end, pci_start, pci_end;
+ int i, j;
/*
- * 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
+ * Some BIOSes have PNP motherboard devices with resources that
+ * partially overlap PCI BARs. The PNP system driver claims these
+ * motherboard resources, which prevents the normal PCI driver from
+ * requesting them later.
+ *
+ * This patch disables the PNP resources that conflict with PCI BARs
+ * so they won't be claimed by the PNP system driver.
*/
- 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;
+ 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;
+
+ pci_start = pci_resource_start(pdev, i);
+ pci_end = pci_resource_end(pdev, i);
+ for (j = 0;
+ (res = pnp_get_resource(dev, IORESOURCE_MEM, j));
+ j++) {
+ if (res->flags & IORESOURCE_UNSET ||
+ (res->start == 0 && res->end == 0))
+ continue;
+
+ pnp_start = res->start;
+ pnp_end = res->end;
+
+ /*
+ * If the PNP region doesn't overlap the PCI
+ * region at all, there's no problem.
+ */
+ if (pnp_end < pci_start || pnp_start > pci_end)
+ continue;
+
+ /*
+ * If the PNP region completely encloses (or is
+ * at least as large as) the PCI region, that's
+ * also OK. For example, this happens when the
+ * PNP device describes a bridge with PCI
+ * behind it.
+ */
+ if (pnp_start <= pci_start &&
+ pnp_end >= pci_end)
+ continue;
+
+ /*
+ * Otherwise, the PNP region overlaps *part* of
+ * the PCI region, and that might prevent a PCI
+ * driver from requesting its resources.
+ */
+ dev_warn(&dev->dev, "mem resource "
+ "(0x%llx-0x%llx) overlaps %s BAR %d "
+ "(0x%llx-0x%llx), disabling\n",
+ (unsigned long long) pnp_start,
+ (unsigned long long) pnp_end,
+ pci_name(pdev), i,
+ (unsigned long long) pci_start,
+ (unsigned long long) pci_end);
+ res->flags = 0;
+ }
}
}
}
{"CTL0043", quirk_sb16audio_resources},
{"CTL0044", quirk_sb16audio_resources},
{"CTL0045", quirk_sb16audio_resources},
- {"PNP0c01", quirk_supermicro_h8dce_system},
- {"PNP0c02", quirk_supermicro_h8dce_system},
+ {"PNP0c01", quirk_system_pci_resources},
+ {"PNP0c02", quirk_system_pci_resources},
{""}
};
quirk = pnp_fixups[i].quirk_function;
#ifdef DEBUG
- dev_dbg(&dev->dev, "calling quirk 0x%p", quirk);
- print_fn_descriptor_symbol(": %s()\n",
+ dev_dbg(&dev->dev, "calling ");
+ print_fn_descriptor_symbol("%s()\n",
(unsigned long) *quirk);
#endif
(*quirk)(dev);
projects / ~andy / linux / blobdiff