1 files changed, 51 insertions, 11 deletions

diff --git a/arch/sparc64/kernel/pci.c b/arch/sparc64/kernel/pci.c
index 77449a005752..3d93e9203ba2 100644
--- a/arch/sparc64/kernel/pci.c
+++ b/arch/sparc64/kernel/pci.c
@@ -283,12 +283,6 @@ int __init pcic_present(void)
         return pci_controller_scan(pci_is_controller);
 }
 
-const struct pci_iommu_ops *pci_iommu_ops;
-EXPORT_SYMBOL(pci_iommu_ops);
-
-extern const struct pci_iommu_ops pci_sun4u_iommu_ops,
-        pci_sun4v_iommu_ops;
-
 /* Find each controller in the system, attach and initialize
  * software state structure for each and link into the
  * pci_pbm_root.  Setup the controller enough such
@@ -296,11 +290,6 @@ extern const struct pci_iommu_ops pci_sun4u_iommu_ops,
  */
 static void __init pci_controller_probe(void)
 {
-        if (tlb_type == hypervisor)
-                pci_iommu_ops = &pci_sun4v_iommu_ops;
-        else
-                pci_iommu_ops = &pci_sun4u_iommu_ops;
-
         printk("PCI: Probing for controllers.\n");
 
         pci_controller_scan(pci_controller_init);
@@ -406,6 +395,10 @@ struct pci_dev *of_create_pci_dev(struct pci_pbm_info *pbm,
         sd->op = of_find_device_by_node(node);
         sd->msi_num = 0xffffffff;
 
+        sd = &sd->op->dev.archdata;
+        sd->iommu = pbm->iommu;
+        sd->stc = &pbm->stc;
+
         type = of_get_property(node, "device_type", NULL);
         if (type == NULL)
                 type = "";
@@ -1226,4 +1219,51 @@ struct device_node *pci_device_to_OF_node(struct pci_dev *pdev)
 }
 EXPORT_SYMBOL(pci_device_to_OF_node);
 
+static void ali_sound_dma_hack(struct pci_dev *pdev, int set_bit)
+{
+        struct pci_dev *ali_isa_bridge;
+        u8 val;
+
+        /* ALI sound chips generate 31-bits of DMA, a special register
+         * determines what bit 31 is emitted as.
+         */
+        ali_isa_bridge = pci_get_device(PCI_VENDOR_ID_AL,
+                                         PCI_DEVICE_ID_AL_M1533,
+                                         NULL);
+
+        pci_read_config_byte(ali_isa_bridge, 0x7e, &val);
+        if (set_bit)
+                val |= 0x01;
+        else
+                val &= ~0x01;
+        pci_write_config_byte(ali_isa_bridge, 0x7e, val);
+        pci_dev_put(ali_isa_bridge);
+}
+
+int pci_dma_supported(struct pci_dev *pdev, u64 device_mask)
+{
+        u64 dma_addr_mask;
+
+        if (pdev == NULL) {
+                dma_addr_mask = 0xffffffff;
+        } else {
+                struct iommu *iommu = pdev->dev.archdata.iommu;
+
+                dma_addr_mask = iommu->dma_addr_mask;
+
+                if (pdev->vendor == PCI_VENDOR_ID_AL &&
+                    pdev->device == PCI_DEVICE_ID_AL_M5451 &&
+                    device_mask == 0x7fffffff) {
+                        ali_sound_dma_hack(pdev,
+                                           (dma_addr_mask & 0x80000000) != 0);
+                        return 1;
+                }
+        }
+
+        if (device_mask >= (1UL << 32UL))
+                return 0;
+
+        return (device_mask & dma_addr_mask) == dma_addr_mask;
+}
+
 #endif /* !(CONFIG_PCI) */