Merge with http://www.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git

1 files changed, 42 insertions, 32 deletions

diff --git a/arch/powerpc/platforms/iseries/iommu.c b/arch/powerpc/platforms/iseries/iommu.c
index 1a6845b5c5a..bf081b34582 100644
--- a/arch/powerpc/platforms/iseries/iommu.c
+++ b/arch/powerpc/platforms/iseries/iommu.c
@@ -43,9 +43,12 @@ static void tce_build_iSeries(struct iommu_table *tbl, long index, long npages,
 	u64 rc;
 	union tce_entry tce;
 
+	index <<= TCE_PAGE_FACTOR;
+	npages <<= TCE_PAGE_FACTOR;
+
 	while (npages--) {
 		tce.te_word = 0;
-		tce.te_bits.tb_rpn = virt_to_abs(uaddr) >> PAGE_SHIFT;
+		tce.te_bits.tb_rpn = virt_to_abs(uaddr) >> TCE_SHIFT;
 
 		if (tbl->it_type == TCE_VB) {
 			/* Virtual Bus */
@@ -66,7 +69,7 @@ static void tce_build_iSeries(struct iommu_table *tbl, long index, long npages,
 			panic("PCI_DMA: HvCallXm_setTce failed, Rc: 0x%lx\n",
 					rc);
 		index++;
-		uaddr += PAGE_SIZE;
+		uaddr += TCE_PAGE_SIZE;
 	}
 }
 
@@ -74,6 +77,9 @@ static void tce_free_iSeries(struct iommu_table *tbl, long index, long npages)
 {
 	u64 rc;
 
+	npages <<= TCE_PAGE_FACTOR;
+	index <<= TCE_PAGE_FACTOR;
+
 	while (npages--) {
 		rc = HvCallXm_setTce((u64)tbl->it_index, (u64)index, 0);
 		if (rc)
@@ -83,27 +89,6 @@ static void tce_free_iSeries(struct iommu_table *tbl, long index, long npages)
 	}
 }
 
-#ifdef CONFIG_PCI
-/*
- * This function compares the known tables to find an iommu_table
- * that has already been built for hardware TCEs.
- */
-static struct iommu_table *iommu_table_find(struct iommu_table * tbl)
-{
-	struct pci_dn *pdn;
-
-	list_for_each_entry(pdn, &iSeries_Global_Device_List, Device_List) {
-		struct iommu_table *it = pdn->iommu_table;
-		if ((it != NULL) &&
-		    (it->it_type == TCE_PCI) &&
-		    (it->it_offset == tbl->it_offset) &&
-		    (it->it_index == tbl->it_index) &&
-		    (it->it_size == tbl->it_size))
-			return it;
-	}
-	return NULL;
-}
-
 /*
  * Call Hv with the architected data structure to get TCE table info.
  * info. Put the returned data into the Linux representation of the
@@ -113,8 +98,10 @@ static struct iommu_table *iommu_table_find(struct iommu_table * tbl)
  * 2. TCE table per Bus.
  * 3. TCE Table per IOA.
  */
-static void iommu_table_getparms(struct pci_dn *pdn,
-				 struct iommu_table* tbl)
+void iommu_table_getparms_iSeries(unsigned long busno,
+				  unsigned char slotno,
+				  unsigned char virtbus,
+				  struct iommu_table* tbl)
 {
 	struct iommu_table_cb *parms;
 
@@ -124,9 +111,9 @@ static void iommu_table_getparms(struct pci_dn *pdn,
 
 	memset(parms, 0, sizeof(*parms));
 
-	parms->itc_busno = pdn->busno;
-	parms->itc_slotno = pdn->LogicalSlot;
-	parms->itc_virtbus = 0;
+	parms->itc_busno = busno;
+	parms->itc_slotno = slotno;
+	parms->itc_virtbus = virtbus;
 
 	HvCallXm_getTceTableParms(iseries_hv_addr(parms));
 
@@ -134,17 +121,40 @@ static void iommu_table_getparms(struct pci_dn *pdn,
 		panic("PCI_DMA: parms->size is zero, parms is 0x%p", parms);
 
 	/* itc_size is in pages worth of table, it_size is in # of entries */
-	tbl->it_size = (parms->itc_size * PAGE_SIZE) / sizeof(union tce_entry);
+	tbl->it_size = ((parms->itc_size * TCE_PAGE_SIZE) /
+			sizeof(union tce_entry)) >> TCE_PAGE_FACTOR;
 	tbl->it_busno = parms->itc_busno;
-	tbl->it_offset = parms->itc_offset;
+	tbl->it_offset = parms->itc_offset >> TCE_PAGE_FACTOR;
 	tbl->it_index = parms->itc_index;
 	tbl->it_blocksize = 1;
-	tbl->it_type = TCE_PCI;
+	tbl->it_type = virtbus ? TCE_VB : TCE_PCI;
 
 	kfree(parms);
 }
 
 
+#ifdef CONFIG_PCI
+/*
+ * This function compares the known tables to find an iommu_table
+ * that has already been built for hardware TCEs.
+ */
+static struct iommu_table *iommu_table_find(struct iommu_table * tbl)
+{
+	struct pci_dn *pdn;
+
+	list_for_each_entry(pdn, &iSeries_Global_Device_List, Device_List) {
+		struct iommu_table *it = pdn->iommu_table;
+		if ((it != NULL) &&
+		    (it->it_type == TCE_PCI) &&
+		    (it->it_offset == tbl->it_offset) &&
+		    (it->it_index == tbl->it_index) &&
+		    (it->it_size == tbl->it_size))
+			return it;
+	}
+	return NULL;
+}
+
+
 void iommu_devnode_init_iSeries(struct device_node *dn)
 {
 	struct iommu_table *tbl;
@@ -152,7 +162,7 @@ void iommu_devnode_init_iSeries(struct device_node *dn)
 
 	tbl = kmalloc(sizeof(struct iommu_table), GFP_KERNEL);
 
-	iommu_table_getparms(pdn, tbl);
+	iommu_table_getparms_iSeries(pdn->busno, pdn->LogicalSlot, 0, tbl);
 
 	/* Look for existing tce table */
 	pdn->iommu_table = iommu_table_find(tbl);