提交 d6c3112a 编写于 作者: L Linus Torvalds

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
  x86/PCI: build failure at x86/kernel/pci-dma.c with !CONFIG_PCI
...@@ -11,6 +11,5 @@ extern int force_iommu, no_iommu; ...@@ -11,6 +11,5 @@ extern int force_iommu, no_iommu;
extern int iommu_detected; extern int iommu_detected;
extern void iommu_dma_init(void); extern void iommu_dma_init(void);
extern void machvec_init(const char *name); extern void machvec_init(const char *name);
extern int forbid_dac;
#endif #endif
...@@ -89,13 +89,6 @@ int iommu_dma_supported(struct device *dev, u64 mask) ...@@ -89,13 +89,6 @@ int iommu_dma_supported(struct device *dev, u64 mask)
{ {
struct dma_mapping_ops *ops = get_dma_ops(dev); struct dma_mapping_ops *ops = get_dma_ops(dev);
#ifdef CONFIG_PCI
if (mask > 0xffffffff && forbid_dac > 0) {
dev_info(dev, "Disallowing DAC for device\n");
return 0;
}
#endif
if (ops->dma_supported_op) if (ops->dma_supported_op)
return ops->dma_supported_op(dev, mask); return ops->dma_supported_op(dev, mask);
......
...@@ -7,7 +7,6 @@ extern struct dma_mapping_ops nommu_dma_ops; ...@@ -7,7 +7,6 @@ extern struct dma_mapping_ops nommu_dma_ops;
extern int force_iommu, no_iommu; extern int force_iommu, no_iommu;
extern int iommu_detected; extern int iommu_detected;
extern int dmar_disabled; extern int dmar_disabled;
extern int forbid_dac;
extern unsigned long iommu_nr_pages(unsigned long addr, unsigned long len); extern unsigned long iommu_nr_pages(unsigned long addr, unsigned long len);
......
...@@ -9,6 +9,8 @@ ...@@ -9,6 +9,8 @@
#include <asm/calgary.h> #include <asm/calgary.h>
#include <asm/amd_iommu.h> #include <asm/amd_iommu.h>
static int forbid_dac __read_mostly;
struct dma_mapping_ops *dma_ops; struct dma_mapping_ops *dma_ops;
EXPORT_SYMBOL(dma_ops); EXPORT_SYMBOL(dma_ops);
...@@ -291,3 +293,17 @@ void pci_iommu_shutdown(void) ...@@ -291,3 +293,17 @@ void pci_iommu_shutdown(void)
} }
/* Must execute after PCI subsystem */ /* Must execute after PCI subsystem */
fs_initcall(pci_iommu_init); fs_initcall(pci_iommu_init);
#ifdef CONFIG_PCI
/* Many VIA bridges seem to corrupt data for DAC. Disable it here */
static __devinit void via_no_dac(struct pci_dev *dev)
{
if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI && forbid_dac == 0) {
printk(KERN_INFO "PCI: VIA PCI bridge detected."
"Disabling DAC.\n");
forbid_dac = 1;
}
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_ANY_ID, via_no_dac);
#endif
...@@ -43,20 +43,6 @@ static void __devinit quirk_mellanox_tavor(struct pci_dev *dev) ...@@ -43,20 +43,6 @@ static void __devinit quirk_mellanox_tavor(struct pci_dev *dev)
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR,quirk_mellanox_tavor); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR,quirk_mellanox_tavor);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE,quirk_mellanox_tavor); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE,quirk_mellanox_tavor);
/* Many VIA bridges seem to corrupt data for DAC. Disable it here */
int forbid_dac __read_mostly;
EXPORT_SYMBOL(forbid_dac);
static __devinit void via_no_dac(struct pci_dev *dev)
{
if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI && forbid_dac == 0) {
dev_info(&dev->dev,
"VIA PCI bridge detected. Disabling DAC.\n");
forbid_dac = 1;
}
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_ANY_ID, via_no_dac);
/* Deal with broken BIOS'es that neglect to enable passive release, /* Deal with broken BIOS'es that neglect to enable passive release,
which can cause problems in combination with the 82441FX/PPro MTRRs */ which can cause problems in combination with the 82441FX/PPro MTRRs */
static void quirk_passive_release(struct pci_dev *dev) static void quirk_passive_release(struct pci_dev *dev)
......
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