include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit...

[safe/jmp/linux-2.6] / arch / powerpc / platforms / iseries / iommu.c

diff --git a/arch/powerpc/platforms/iseries/iommu.c b/arch/powerpc/platforms/iseries/iommu.c
index d7a756d..ce61cea 100644 (file)
--- a/arch/powerpc/platforms/iseries/iommu.c
+++ b/arch/powerpc/platforms/iseries/iommu.c
@@ -28,18 +28,23 @@
 #include <linux/dma-mapping.h>
 #include <linux/list.h>
 #include <linux/pci.h>
+#include <linux/module.h>
+#include <linux/slab.h>
 
 #include <asm/iommu.h>
+#include <asm/vio.h>
 #include <asm/tce.h>
 #include <asm/machdep.h>
 #include <asm/abs_addr.h>
 #include <asm/prom.h>
 #include <asm/pci-bridge.h>
 #include <asm/iseries/hv_call_xm.h>
+#include <asm/iseries/hv_call_event.h>
 #include <asm/iseries/iommu.h>
 
-static void tce_build_iSeries(struct iommu_table *tbl, long index, long npages,
-               unsigned long uaddr, enum dma_data_direction direction)
+static int tce_build_iSeries(struct iommu_table *tbl, long index, long npages,
+               unsigned long uaddr, enum dma_data_direction direction,
+               struct dma_attrs *attrs)
 {
        u64 rc;
        u64 tce, rpn;
@@ -62,11 +67,12 @@ static void tce_build_iSeries(struct iommu_table *tbl, long index, long npages,
 
                rc = HvCallXm_setTce((u64)tbl->it_index, (u64)index, tce);
                if (rc)
-                       panic("PCI_DMA: HvCallXm_setTce failed, Rc: 0x%lx\n",
+                       panic("PCI_DMA: HvCallXm_setTce failed, Rc: 0x%llx\n",
                                        rc);
                index++;
                uaddr += TCE_PAGE_SIZE;
        }
+       return 0;
 }
 
 static void tce_free_iSeries(struct iommu_table *tbl, long index, long npages)
@@ -76,7 +82,7 @@ static void tce_free_iSeries(struct iommu_table *tbl, long index, long npages)
        while (npages--) {
                rc = HvCallXm_setTce((u64)tbl->it_index, (u64)index, 0);
                if (rc)
-                       panic("PCI_DMA: HvCallXm_setTce failed, Rc: 0x%lx\n",
+                       panic("PCI_DMA: HvCallXm_setTce failed, Rc: 0x%llx\n",
                                        rc);
                index++;
        }
@@ -160,18 +166,21 @@ static struct iommu_table *iommu_table_find(struct iommu_table * tbl)
                    (it->it_type == TCE_PCI) &&
                    (it->it_offset == tbl->it_offset) &&
                    (it->it_index == tbl->it_index) &&
-                   (it->it_size == tbl->it_size))
+                   (it->it_size == tbl->it_size)) {
+                       of_node_put(node);
                        return it;
+               }
        }
        return NULL;
 }
 
 
-void iommu_devnode_init_iSeries(struct pci_dev *pdev, struct device_node *dn)
+static void pci_dma_dev_setup_iseries(struct pci_dev *pdev)
 {
        struct iommu_table *tbl;
+       struct device_node *dn = pci_device_to_OF_node(pdev);
        struct pci_dn *pdn = PCI_DN(dn);
-       const u32 *lsn = get_property(dn, "linux,logical-slot-number", NULL);
+       const u32 *lsn = of_get_property(dn, "linux,logical-slot-number", NULL);
 
        BUG_ON(lsn == NULL);
 
@@ -185,14 +194,67 @@ void iommu_devnode_init_iSeries(struct pci_dev *pdev, struct device_node *dn)
                pdn->iommu_table = iommu_init_table(tbl, -1);
        else
                kfree(tbl);
-       pdev->dev.archdata.dma_data = pdn->iommu_table;
+       set_iommu_table_base(&pdev->dev, pdn->iommu_table);
 }
+#else
+#define pci_dma_dev_setup_iseries      NULL
 #endif
 
+static struct iommu_table veth_iommu_table;
+static struct iommu_table vio_iommu_table;
+
+void *iseries_hv_alloc(size_t size, dma_addr_t *dma_handle, gfp_t flag)
+{
+       return iommu_alloc_coherent(NULL, &vio_iommu_table, size, dma_handle,
+                               DMA_BIT_MASK(32), flag, -1);
+}
+EXPORT_SYMBOL_GPL(iseries_hv_alloc);
+
+void iseries_hv_free(size_t size, void *vaddr, dma_addr_t dma_handle)
+{
+       iommu_free_coherent(&vio_iommu_table, size, vaddr, dma_handle);
+}
+EXPORT_SYMBOL_GPL(iseries_hv_free);
+
+dma_addr_t iseries_hv_map(void *vaddr, size_t size,
+                       enum dma_data_direction direction)
+{
+       return iommu_map_page(NULL, &vio_iommu_table, virt_to_page(vaddr),
+                             (unsigned long)vaddr % PAGE_SIZE, size,
+                             DMA_BIT_MASK(32), direction, NULL);
+}
+
+void iseries_hv_unmap(dma_addr_t dma_handle, size_t size,
+                       enum dma_data_direction direction)
+{
+       iommu_unmap_page(&vio_iommu_table, dma_handle, size, direction, NULL);
+}
+
+void __init iommu_vio_init(void)
+{
+       iommu_table_getparms_iSeries(255, 0, 0xff, &veth_iommu_table);
+       veth_iommu_table.it_size /= 2;
+       vio_iommu_table = veth_iommu_table;
+       vio_iommu_table.it_offset += veth_iommu_table.it_size;
+
+       if (!iommu_init_table(&veth_iommu_table, -1))
+               printk("Virtual Bus VETH TCE table failed.\n");
+       if (!iommu_init_table(&vio_iommu_table, -1))
+               printk("Virtual Bus VIO TCE table failed.\n");
+}
+
+struct iommu_table *vio_build_iommu_table_iseries(struct vio_dev *dev)
+{
+       if (strcmp(dev->type, "network") == 0)
+               return &veth_iommu_table;
+       return &vio_iommu_table;
+}
+
 void iommu_init_early_iSeries(void)
 {
        ppc_md.tce_build = tce_build_iSeries;
        ppc_md.tce_free  = tce_free_iSeries;
 
-       pci_dma_ops = &dma_iommu_ops;
+       ppc_md.pci_dma_dev_setup = pci_dma_dev_setup_iseries;
+       set_pci_dma_ops(&dma_iommu_ops);
 }