3 files changed, 38 insertions, 0 deletions

diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index 952e0f857ac9..ba9114ec5d3a 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -48,6 +48,11 @@ static inline int is_device_dma_capable(struct device *dev)
         return dev->dma_mask != NULL && *dev->dma_mask != DMA_MASK_NONE;
 }
 
+static inline int is_buffer_dma_capable(u64 mask, dma_addr_t addr, size_t size)
+{
+        return addr + size <= mask;
+}
+
 #ifdef CONFIG_HAS_DMA
 #include <asm/dma-mapping.h>
 #else
@@ -58,6 +63,13 @@ static inline int is_device_dma_capable(struct device *dev)
 #define dma_sync_single         dma_sync_single_for_cpu
 #define dma_sync_sg             dma_sync_sg_for_cpu
 
+static inline u64 dma_get_mask(struct device *dev)
+{
+        if (dev && dev->dma_mask && *dev->dma_mask)
+                return *dev->dma_mask;
+        return DMA_32BIT_MASK;
+}
+
 extern u64 dma_get_required_mask(struct device *dev);
 
 static inline unsigned int dma_get_max_seg_size(struct device *dev)
diff --git a/include/linux/iommu-helper.h b/include/linux/iommu-helper.h
index c975caf75385..a6d0586e2bf7 100644
--- a/include/linux/iommu-helper.h
+++ b/include/linux/iommu-helper.h
@@ -1,6 +1,20 @@
+#ifndef _LINUX_IOMMU_HELPER_H
+#define _LINUX_IOMMU_HELPER_H
+
+static inline unsigned long iommu_device_max_index(unsigned long size,
+                                                   unsigned long offset,
+                                                   u64 dma_mask)
+{
+        if (size + offset > dma_mask)
+                return dma_mask - offset + 1;
+        else
+                return size;
+}
+
 extern int iommu_is_span_boundary(unsigned int index, unsigned int nr,
                                   unsigned long shift,
                                   unsigned long boundary_size);
+extern void iommu_area_reserve(unsigned long *map, unsigned long i, int len);
 extern unsigned long iommu_area_alloc(unsigned long *map, unsigned long size,
                                       unsigned long start, unsigned int nr,
                                       unsigned long shift,
@@ -8,3 +22,5 @@ extern unsigned long iommu_area_alloc(unsigned long *map, unsigned long size,
                                       unsigned long align_mask);
 extern void iommu_area_free(unsigned long *map, unsigned long start,
                             unsigned int nr);
+
+#endif
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index a65b082a888a..f63b5455801c 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -497,6 +497,16 @@
 #define PCI_DEVICE_ID_AMD_K8_NB_ADDRMAP 0x1101
 #define PCI_DEVICE_ID_AMD_K8_NB_MEMCTL  0x1102
 #define PCI_DEVICE_ID_AMD_K8_NB_MISC    0x1103
+#define PCI_DEVICE_ID_AMD_10H_NB_HT     0x1200
+#define PCI_DEVICE_ID_AMD_10H_NB_MAP    0x1201
+#define PCI_DEVICE_ID_AMD_10H_NB_DRAM   0x1202
+#define PCI_DEVICE_ID_AMD_10H_NB_MISC   0x1203
+#define PCI_DEVICE_ID_AMD_10H_NB_LINK   0x1204
+#define PCI_DEVICE_ID_AMD_11H_NB_HT     0x1300
+#define PCI_DEVICE_ID_AMD_11H_NB_MAP    0x1301
+#define PCI_DEVICE_ID_AMD_11H_NB_DRAM   0x1302
+#define PCI_DEVICE_ID_AMD_11H_NB_MISC   0x1303
+#define PCI_DEVICE_ID_AMD_11H_NB_LINK   0x1304
 #define PCI_DEVICE_ID_AMD_LANCE         0x2000
 #define PCI_DEVICE_ID_AMD_LANCE_HOME    0x2001
 #define PCI_DEVICE_ID_AMD_SCSI          0x2020