powerpc/iommu: Update constant names to reflect their hardcoded page size

The powerpc iommu uses a hardcoded page size of 4K. This patch changes
the name of the IOMMU_PAGE_* macros to reflect the hardcoded values. A
future patch will use the existing names to support dynamic page
sizes.

Signed-off-by: Alistair Popple <alistair@popple.id.au>
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

2 files changed, 19 insertions, 18 deletions

diff --git a/drivers/net/ethernet/ibm/ibmveth.c b/drivers/net/ethernet/ibm/ibmveth.c
index 952d795230a4..f7d7538b6bd9 100644
--- a/drivers/net/ethernet/ibm/ibmveth.c
+++ b/drivers/net/ethernet/ibm/ibmveth.c
@@ -1282,24 +1282,25 @@ static unsigned long ibmveth_get_desired_dma(struct vio_dev *vdev)
 
         /* netdev inits at probe time along with the structures we need below*/
         if (netdev == NULL)
-                return IOMMU_PAGE_ALIGN(IBMVETH_IO_ENTITLEMENT_DEFAULT);
+                return IOMMU_PAGE_ALIGN_4K(IBMVETH_IO_ENTITLEMENT_DEFAULT);
 
         adapter = netdev_priv(netdev);
 
         ret = IBMVETH_BUFF_LIST_SIZE + IBMVETH_FILT_LIST_SIZE;
-        ret += IOMMU_PAGE_ALIGN(netdev->mtu);
+        ret += IOMMU_PAGE_ALIGN_4K(netdev->mtu);
 
         for (i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++) {
                 /* add the size of the active receive buffers */
                 if (adapter->rx_buff_pool[i].active)
                         ret +=
                             adapter->rx_buff_pool[i].size *
-                            IOMMU_PAGE_ALIGN(adapter->rx_buff_pool[i].
+                            IOMMU_PAGE_ALIGN_4K(adapter->rx_buff_pool[i].
                                     buff_size);
                 rxqentries += adapter->rx_buff_pool[i].size;
         }
         /* add the size of the receive queue entries */
-        ret += IOMMU_PAGE_ALIGN(rxqentries * sizeof(struct ibmveth_rx_q_entry));
+        ret += IOMMU_PAGE_ALIGN_4K(
+                rxqentries * sizeof(struct ibmveth_rx_q_entry));
 
         return ret;
 }
diff --git a/drivers/vfio/vfio_iommu_spapr_tce.c b/drivers/vfio/vfio_iommu_spapr_tce.c
index bdae7a04af75..a84788ba662c 100644
--- a/drivers/vfio/vfio_iommu_spapr_tce.c
+++ b/drivers/vfio/vfio_iommu_spapr_tce.c
@@ -81,7 +81,7 @@ static int tce_iommu_enable(struct tce_container *container)
          * enforcing the limit based on the max that the guest can map.
          */
         down_write(&current->mm->mmap_sem);
-        npages = (tbl->it_size << IOMMU_PAGE_SHIFT) >> PAGE_SHIFT;
+        npages = (tbl->it_size << IOMMU_PAGE_SHIFT_4K) >> PAGE_SHIFT;
         locked = current->mm->locked_vm + npages;
         lock_limit = rlimit(RLIMIT_MEMLOCK) >> PAGE_SHIFT;
         if (locked > lock_limit && !capable(CAP_IPC_LOCK)) {
@@ -110,7 +110,7 @@ static void tce_iommu_disable(struct tce_container *container)
 
         down_write(&current->mm->mmap_sem);
         current->mm->locked_vm -= (container->tbl->it_size <<
-                        IOMMU_PAGE_SHIFT) >> PAGE_SHIFT;
+                        IOMMU_PAGE_SHIFT_4K) >> PAGE_SHIFT;
         up_write(&current->mm->mmap_sem);
 }
 
@@ -174,8 +174,8 @@ static long tce_iommu_ioctl(void *iommu_data,
                 if (info.argsz < minsz)
                         return -EINVAL;
 
-                info.dma32_window_start = tbl->it_offset << IOMMU_PAGE_SHIFT;
-                info.dma32_window_size = tbl->it_size << IOMMU_PAGE_SHIFT;
+                info.dma32_window_start = tbl->it_offset << IOMMU_PAGE_SHIFT_4K;
+                info.dma32_window_size = tbl->it_size << IOMMU_PAGE_SHIFT_4K;
                 info.flags = 0;
 
                 if (copy_to_user((void __user *)arg, &info, minsz))
@@ -205,8 +205,8 @@ static long tce_iommu_ioctl(void *iommu_data,
                                 VFIO_DMA_MAP_FLAG_WRITE))
                         return -EINVAL;
 
-                if ((param.size & ~IOMMU_PAGE_MASK) ||
-                                (param.vaddr & ~IOMMU_PAGE_MASK))
+                if ((param.size & ~IOMMU_PAGE_MASK_4K) ||
+                                (param.vaddr & ~IOMMU_PAGE_MASK_4K))
                         return -EINVAL;
 
                 /* iova is checked by the IOMMU API */
@@ -220,17 +220,17 @@ static long tce_iommu_ioctl(void *iommu_data,
                 if (ret)
                         return ret;
 
-                for (i = 0; i < (param.size >> IOMMU_PAGE_SHIFT); ++i) {
+                for (i = 0; i < (param.size >> IOMMU_PAGE_SHIFT_4K); ++i) {
                         ret = iommu_put_tce_user_mode(tbl,
-                                        (param.iova >> IOMMU_PAGE_SHIFT) + i,
+                                        (param.iova >> IOMMU_PAGE_SHIFT_4K) + i,
                                         tce);
                         if (ret)
                                 break;
-                        tce += IOMMU_PAGE_SIZE;
+                        tce += IOMMU_PAGE_SIZE_4K;
                 }
                 if (ret)
                         iommu_clear_tces_and_put_pages(tbl,
-                                        param.iova >> IOMMU_PAGE_SHIFT, i);
+                                        param.iova >> IOMMU_PAGE_SHIFT_4K, i);
 
                 iommu_flush_tce(tbl);
 
@@ -256,17 +256,17 @@ static long tce_iommu_ioctl(void *iommu_data,
                 if (param.flags)
                         return -EINVAL;
 
-                if (param.size & ~IOMMU_PAGE_MASK)
+                if (param.size & ~IOMMU_PAGE_MASK_4K)
                         return -EINVAL;
 
                 ret = iommu_tce_clear_param_check(tbl, param.iova, 0,
-                                param.size >> IOMMU_PAGE_SHIFT);
+                                param.size >> IOMMU_PAGE_SHIFT_4K);
                 if (ret)
                         return ret;
 
                 ret = iommu_clear_tces_and_put_pages(tbl,
-                                param.iova >> IOMMU_PAGE_SHIFT,
-                                param.size >> IOMMU_PAGE_SHIFT);
+                                param.iova >> IOMMU_PAGE_SHIFT_4K,
+                                param.size >> IOMMU_PAGE_SHIFT_4K);
                 iommu_flush_tce(tbl);
 
                 return ret;