[SPARC64]: Consolidate common PCI IOMMU init code.

All the PCI controller drivers were doing the same thing
setting up the IOMMU software state, put it all in one spot.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 35 deletions

diff --git a/arch/sparc64/kernel/pci_sabre.c b/arch/sparc64/kernel/pci_sabre.c
index 0ee6bd5b9ac6..da8e1364194f 100644
--- a/arch/sparc64/kernel/pci_sabre.c
+++ b/arch/sparc64/kernel/pci_sabre.c
@@ -1267,13 +1267,9 @@ static void sabre_iommu_init(struct pci_controller_info *p,
                              u32 dma_mask)
 {
         struct pci_iommu *iommu = p->pbm_A.iommu;
-        unsigned long tsbbase, i, order;
+        unsigned long i;
         u64 control;
 
-        /* Setup initial software IOMMU state. */
-        spin_lock_init(&iommu->lock);
-        iommu->ctx_lowest_free = 1;
-
         /* Register addresses. */
         iommu->iommu_control  = p->pbm_A.controller_regs + SABRE_IOMMU_CONTROL;
         iommu->iommu_tsbbase  = p->pbm_A.controller_regs + SABRE_IOMMU_TSBBASE;
@@ -1295,26 +1291,10 @@ static void sabre_iommu_init(struct pci_controller_info *p,
         /* Leave diag mode enabled for full-flushing done
          * in pci_iommu.c
          */
+        pci_iommu_table_init(iommu, tsbsize * 1024 * 8, dvma_offset, dma_mask);
 
-        iommu->dummy_page = __get_free_pages(GFP_KERNEL, 0);
-        if (!iommu->dummy_page) {
-                prom_printf("PSYCHO_IOMMU: Error, gfp(dummy_page) failed.\n");
-                prom_halt();
-        }
-        memset((void *)iommu->dummy_page, 0, PAGE_SIZE);
-        iommu->dummy_page_pa = (unsigned long) __pa(iommu->dummy_page);
-
-        tsbbase = __get_free_pages(GFP_KERNEL, order = get_order(tsbsize * 1024 * 8));
-        if (!tsbbase) {
-                prom_printf("SABRE_IOMMU: Error, gfp(tsb) failed.\n");
-                prom_halt();
-        }
-        iommu->page_table = (iopte_t *)tsbbase;
-        iommu->page_table_map_base = dvma_offset;
-        iommu->dma_addr_mask = dma_mask;
-        pci_iommu_table_init(iommu, PAGE_SIZE << order);
-
-        sabre_write(p->pbm_A.controller_regs + SABRE_IOMMU_TSBBASE, __pa(tsbbase));
+        sabre_write(p->pbm_A.controller_regs + SABRE_IOMMU_TSBBASE,
+                    __pa(iommu->page_table));
 
         control = sabre_read(p->pbm_A.controller_regs + SABRE_IOMMU_CONTROL);
         control &= ~(SABRE_IOMMUCTRL_TSBSZ | SABRE_IOMMUCTRL_TBWSZ);
@@ -1322,11 +1302,9 @@ static void sabre_iommu_init(struct pci_controller_info *p,
         switch(tsbsize) {
         case 64:
                 control |= SABRE_IOMMU_TSBSZ_64K;
-                iommu->page_table_sz_bits = 16;
                 break;
         case 128:
                 control |= SABRE_IOMMU_TSBSZ_128K;
-                iommu->page_table_sz_bits = 17;
                 break;
         default:
                 prom_printf("iommu_init: Illegal TSB size %d\n", tsbsize);
@@ -1334,15 +1312,6 @@ static void sabre_iommu_init(struct pci_controller_info *p,
                 break;
         }
         sabre_write(p->pbm_A.controller_regs + SABRE_IOMMU_CONTROL, control);
-
-        /* We start with no consistent mappings. */
-        iommu->lowest_consistent_map =
-                1 << (iommu->page_table_sz_bits - PBM_LOGCLUSTERS);
-
-        for (i = 0; i < PBM_NCLUSTERS; i++) {
-                iommu->alloc_info[i].flush = 0;
-                iommu->alloc_info[i].next = 0;
-        }
 }
 
 static void pbm_register_toplevel_resources(struct pci_controller_info *p,