Inital import

[l4.git] / l4 / pkg / linux-26-headers / include / asm-x86 / pci_64.h

diff --git a/l4/pkg/linux-26-headers/include/asm-x86/pci_64.h b/l4/pkg/linux-26-headers/include/asm-x86/pci_64.h
new file mode 100644 (file)
index 0000000..f330234
--- /dev/null
+++ b/l4/pkg/linux-26-headers/include/asm-x86/pci_64.h
@@ -0,0 +1,66 @@
+#ifndef __x8664_PCI_H
+#define __x8664_PCI_H
+
+#ifdef __KERNEL__
+
+#ifdef CONFIG_CALGARY_IOMMU
+static inline void *pci_iommu(struct pci_bus *bus)
+{
+       struct pci_sysdata *sd = bus->sysdata;
+       return sd->iommu;
+}
+
+static inline void set_pci_iommu(struct pci_bus *bus, void *val)
+{
+       struct pci_sysdata *sd = bus->sysdata;
+       sd->iommu = val;
+}
+#endif /* CONFIG_CALGARY_IOMMU */
+
+extern int (*pci_config_read)(int seg, int bus, int dev, int fn,
+                             int reg, int len, u32 *value);
+extern int (*pci_config_write)(int seg, int bus, int dev, int fn,
+                              int reg, int len, u32 value);
+
+extern void dma32_reserve_bootmem(void);
+extern void pci_iommu_alloc(void);
+
+/* The PCI address space does equal the physical memory
+ * address space.  The networking and block device layers use
+ * this boolean for bounce buffer decisions
+ *
+ * On AMD64 it mostly equals, but we set it to zero if a hardware
+ * IOMMU (gart) of sotware IOMMU (swiotlb) is available.
+ */
+#define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
+
+#if defined(CONFIG_GART_IOMMU) || defined(CONFIG_CALGARY_IOMMU)
+
+#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)      \
+       dma_addr_t ADDR_NAME;
+#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)                \
+       __u32 LEN_NAME;
+#define pci_unmap_addr(PTR, ADDR_NAME)                 \
+       ((PTR)->ADDR_NAME)
+#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL)                \
+       (((PTR)->ADDR_NAME) = (VAL))
+#define pci_unmap_len(PTR, LEN_NAME)                   \
+       ((PTR)->LEN_NAME)
+#define pci_unmap_len_set(PTR, LEN_NAME, VAL)          \
+       (((PTR)->LEN_NAME) = (VAL))
+
+#else
+/* No IOMMU */
+
+#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
+#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
+#define pci_unmap_addr(PTR, ADDR_NAME)         (0)
+#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL)        do { } while (0)
+#define pci_unmap_len(PTR, LEN_NAME)           (0)
+#define pci_unmap_len_set(PTR, LEN_NAME, VAL)  do { } while (0)
+
+#endif
+
+#endif /* __KERNEL__ */
+
+#endif /* __x8664_PCI_H */