powerpc/cell: Extract duplicated IOPTE_* to <asm/iommu.h>

Both arch/powerpc/platforms/cell/iommu.c and arch/powerpc/platforms/ps3/mm.c
contain the same Cell IOMMU page table entry definitions. Extract them and move
them to <asm/iommu.h>, while adding a CBE_ prefix.
This also allows them to be used by drivers.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 15 insertions, 22 deletions

diff --git a/arch/powerpc/platforms/cell/iommu.c b/arch/powerpc/platforms/cell/iommu.c
index bed4690de394..5b34fc211f35 100644
--- a/arch/powerpc/platforms/cell/iommu.c
+++ b/arch/powerpc/platforms/cell/iommu.c
@@ -100,16 +100,6 @@
 #define IOSTE_PS_1M             0x0000000000000005ul /*   - 1MB  */
 #define IOSTE_PS_16M            0x0000000000000007ul /*   - 16MB */
 
-/* Page table entries */
-#define IOPTE_PP_W              0x8000000000000000ul /* protection: write */
-#define IOPTE_PP_R              0x4000000000000000ul /* protection: read */
-#define IOPTE_M                 0x2000000000000000ul /* coherency required */
-#define IOPTE_SO_R              0x1000000000000000ul /* ordering: writes */
-#define IOPTE_SO_RW             0x1800000000000000ul /* ordering: r & w */
-#define IOPTE_RPN_Mask          0x07fffffffffff000ul /* RPN */
-#define IOPTE_H                 0x0000000000000800ul /* cache hint */
-#define IOPTE_IOID_Mask         0x00000000000007fful /* ioid */
-
 
 /* IOMMU sizing */
 #define IO_SEGMENT_SHIFT        28
@@ -193,19 +183,21 @@ static int tce_build_cell(struct iommu_table *tbl, long index, long npages,
          */
         const unsigned long prot = 0xc48;
         base_pte =
-                ((prot << (52 + 4 * direction)) & (IOPTE_PP_W | IOPTE_PP_R))
-                | IOPTE_M | IOPTE_SO_RW | (window->ioid & IOPTE_IOID_Mask);
+                ((prot << (52 + 4 * direction)) &
+                 (CBE_IOPTE_PP_W | CBE_IOPTE_PP_R)) |
+                CBE_IOPTE_M | CBE_IOPTE_SO_RW |
+                (window->ioid & CBE_IOPTE_IOID_Mask);
 #else
-        base_pte = IOPTE_PP_W | IOPTE_PP_R | IOPTE_M | IOPTE_SO_RW |
-                (window->ioid & IOPTE_IOID_Mask);
+        base_pte = CBE_IOPTE_PP_W | CBE_IOPTE_PP_R | CBE_IOPTE_M |
+                CBE_IOPTE_SO_RW | (window->ioid & CBE_IOPTE_IOID_Mask);
 #endif
         if (unlikely(dma_get_attr(DMA_ATTR_WEAK_ORDERING, attrs)))
-                base_pte &= ~IOPTE_SO_RW;
+                base_pte &= ~CBE_IOPTE_SO_RW;
 
         io_pte = (unsigned long *)tbl->it_base + (index - tbl->it_offset);
 
         for (i = 0; i < npages; i++, uaddr += IOMMU_PAGE_SIZE)
-                io_pte[i] = base_pte | (__pa(uaddr) & IOPTE_RPN_Mask);
+                io_pte[i] = base_pte | (__pa(uaddr) & CBE_IOPTE_RPN_Mask);
 
         mb();
 
@@ -231,8 +223,9 @@ static void tce_free_cell(struct iommu_table *tbl, long index, long npages)
 #else
         /* spider bridge does PCI reads after freeing - insert a mapping
          * to a scratch page instead of an invalid entry */
-        pte = IOPTE_PP_R | IOPTE_M | IOPTE_SO_RW | __pa(window->iommu->pad_page)
-                | (window->ioid & IOPTE_IOID_Mask);
+        pte = CBE_IOPTE_PP_R | CBE_IOPTE_M | CBE_IOPTE_SO_RW |
+                __pa(window->iommu->pad_page) |
+                (window->ioid & CBE_IOPTE_IOID_Mask);
 #endif
 
         io_pte = (unsigned long *)tbl->it_base + (index - tbl->it_offset);
@@ -1001,7 +994,7 @@ static void insert_16M_pte(unsigned long addr, unsigned long *ptab,
         pr_debug("iommu: addr %lx ptab %p segment %lx offset %lx\n",
                   addr, ptab, segment, offset);
 
-        ptab[offset] = base_pte | (__pa(addr) & IOPTE_RPN_Mask);
+        ptab[offset] = base_pte | (__pa(addr) & CBE_IOPTE_RPN_Mask);
 }
 
 static void cell_iommu_setup_fixed_ptab(struct cbe_iommu *iommu,
@@ -1016,14 +1009,14 @@ static void cell_iommu_setup_fixed_ptab(struct cbe_iommu *iommu,
 
         pr_debug("iommu: mapping 0x%lx pages from 0x%lx\n", fsize, fbase);
 
-        base_pte = IOPTE_PP_W | IOPTE_PP_R | IOPTE_M
-                    | (cell_iommu_get_ioid(np) & IOPTE_IOID_Mask);
+        base_pte = CBE_IOPTE_PP_W | CBE_IOPTE_PP_R | CBE_IOPTE_M |
+                (cell_iommu_get_ioid(np) & CBE_IOPTE_IOID_Mask);
 
         if (iommu_fixed_is_weak)
                 pr_info("IOMMU: Using weak ordering for fixed mapping\n");
         else {
                 pr_info("IOMMU: Using strong ordering for fixed mapping\n");
-                base_pte |= IOPTE_SO_RW;
+                base_pte |= CBE_IOPTE_SO_RW;
         }
 
         for (uaddr = 0; uaddr < fsize; uaddr += (1 << 24)) {