5 files changed, 17 insertions, 19 deletions

diff --git a/arch/sparc/kernel/ebus.c b/arch/sparc/kernel/ebus.c
index ac352eb6dff3..e2d02fd13f35 100644
--- a/arch/sparc/kernel/ebus.c
+++ b/arch/sparc/kernel/ebus.c
@@ -238,6 +238,7 @@ void __init fill_ebus_device(struct device_node *dp, struct linux_ebus_device *d
         sd = &dev->ofdev.dev.archdata;
         sd->prom_node = dp;
         sd->op = &dev->ofdev;
+        sd->iommu = dev->bus->ofdev.dev.parent->archdata.iommu;
 
         dev->ofdev.node = dp;
         dev->ofdev.dev.parent = &dev->bus->ofdev.dev;
diff --git a/arch/sparc/mm/init.c b/arch/sparc/mm/init.c
index a1bef07755a9..c13e6cd279ac 100644
--- a/arch/sparc/mm/init.c
+++ b/arch/sparc/mm/init.c
@@ -206,8 +206,7 @@ unsigned long __init bootmem_init(unsigned long *pages_avail)
 #ifdef CONFIG_BLK_DEV_INITRD
         /* Now have to check initial ramdisk, so that bootmap does not overwrite it */
         if (sparc_ramdisk_image) {
-                if (sparc_ramdisk_image >= (unsigned long)&_end - 2 * PAGE_SIZE)
-                        sparc_ramdisk_image -= KERNBASE;
+                sparc_ramdisk_image -= KERNBASE;
                 initrd_start = sparc_ramdisk_image + phys_base;
                 initrd_end = initrd_start + sparc_ramdisk_size;
                 if (initrd_end > end_of_phys_memory) {
diff --git a/arch/sparc/mm/io-unit.c b/arch/sparc/mm/io-unit.c
index 4ccda77d08d6..7c89893b1fe8 100644
--- a/arch/sparc/mm/io-unit.c
+++ b/arch/sparc/mm/io-unit.c
@@ -66,7 +66,7 @@ iounit_init(int sbi_node, int io_node, struct sbus_bus *sbus)
         }
         if(!xpt) panic("Cannot map External Page Table.");
         
-        sbus->iommu = (struct iommu_struct *)iounit;
+        sbus->ofdev.dev.archdata.iommu = iounit;
         iounit->page_table = xpt;
         spin_lock_init(&iounit->lock);
         
@@ -127,7 +127,7 @@ nexti:	scan = find_next_zero_bit(iounit->bmap, limit, scan);
 static __u32 iounit_get_scsi_one(char *vaddr, unsigned long len, struct sbus_bus *sbus)
 {
         unsigned long ret, flags;
-        struct iounit_struct *iounit = (struct iounit_struct *)sbus->iommu;
+        struct iounit_struct *iounit = sbus->ofdev.dev.archdata.iommu;
         
         spin_lock_irqsave(&iounit->lock, flags);
         ret = iounit_get_area(iounit, (unsigned long)vaddr, len);
@@ -138,7 +138,7 @@ static __u32 iounit_get_scsi_one(char *vaddr, unsigned long len, struct sbus_bus
 static void iounit_get_scsi_sgl(struct scatterlist *sg, int sz, struct sbus_bus *sbus)
 {
         unsigned long flags;
-        struct iounit_struct *iounit = (struct iounit_struct *)sbus->iommu;
+        struct iounit_struct *iounit = sbus->ofdev.dev.archdata.iommu;
 
         /* FIXME: Cache some resolved pages - often several sg entries are to the same page */
         spin_lock_irqsave(&iounit->lock, flags);
@@ -153,7 +153,7 @@ static void iounit_get_scsi_sgl(struct scatterlist *sg, int sz, struct sbus_bus
 static void iounit_release_scsi_one(__u32 vaddr, unsigned long len, struct sbus_bus *sbus)
 {
         unsigned long flags;
-        struct iounit_struct *iounit = (struct iounit_struct *)sbus->iommu;
+        struct iounit_struct *iounit = sbus->ofdev.dev.archdata.iommu;
         
         spin_lock_irqsave(&iounit->lock, flags);
         len = ((vaddr & ~PAGE_MASK) + len + (PAGE_SIZE-1)) >> PAGE_SHIFT;
@@ -168,7 +168,7 @@ static void iounit_release_scsi_sgl(struct scatterlist *sg, int sz, struct sbus_
 {
         unsigned long flags;
         unsigned long vaddr, len;
-        struct iounit_struct *iounit = (struct iounit_struct *)sbus->iommu;
+        struct iounit_struct *iounit = sbus->ofdev.dev.archdata.iommu;
 
         spin_lock_irqsave(&iounit->lock, flags);
         while (sz != 0) {
@@ -211,7 +211,7 @@ static int iounit_map_dma_area(dma_addr_t *pba, unsigned long va, __u32 addr, in
                         i = ((addr - IOUNIT_DMA_BASE) >> PAGE_SHIFT);
 
                         for_each_sbus(sbus) {
-                                struct iounit_struct *iounit = (struct iounit_struct *)sbus->iommu;
+                                struct iounit_struct *iounit = sbus->ofdev.dev.archdata.iommu;
 
                                 iopte = (iopte_t *)(iounit->page_table + i);
                                 *iopte = MKIOPTE(__pa(page));
@@ -235,7 +235,7 @@ static void iounit_unmap_dma_area(unsigned long addr, int len)
 static struct page *iounit_translate_dvma(unsigned long addr)
 {
         struct sbus_bus *sbus = sbus_root;      /* They are all the same */
-        struct iounit_struct *iounit = (struct iounit_struct *)sbus->iommu;
+        struct iounit_struct *iounit = sbus->ofdev.dev.archdata.iommu;
         int i;
         iopte_t *iopte;
 
@@ -279,7 +279,7 @@ __u32 iounit_map_dma_init(struct sbus_bus *sbus, int size)
         unsigned long rotor, scan, limit;
         unsigned long flags;
         __u32 ret;
-        struct iounit_struct *iounit = (struct iounit_struct *)sbus->iommu;
+        struct iounit_struct *iounit = sbus->ofdev.dev.archdata.iommu;
 
         npages = (size + (PAGE_SIZE-1)) >> PAGE_SHIFT;
         i = 0x0213;
@@ -315,7 +315,7 @@ nexti:	scan = find_next_zero_bit(iounit->bmap, limit, scan);
 __u32 iounit_map_dma_page(__u32 vaddr, void *addr, struct sbus_bus *sbus)
 {
         int scan = (vaddr - IOUNIT_DMA_BASE) >> PAGE_SHIFT;
-        struct iounit_struct *iounit = (struct iounit_struct *)sbus->iommu;
+        struct iounit_struct *iounit = sbus->ofdev.dev.archdata.iommu;
         
         iounit->page_table[scan] = MKIOPTE(__pa(((unsigned long)addr) & PAGE_MASK));
         return vaddr + (((unsigned long)addr) & ~PAGE_MASK);
diff --git a/arch/sparc/mm/iommu.c b/arch/sparc/mm/iommu.c
index be042efd1ba4..52e907af9d29 100644
--- a/arch/sparc/mm/iommu.c
+++ b/arch/sparc/mm/iommu.c
@@ -132,7 +132,7 @@ iommu_init(int iommund, struct sbus_bus *sbus)
             impl, vers, iommu->page_table,
             (int)(IOMMU_NPTES*sizeof(iopte_t)), (int)IOMMU_NPTES);
 
-        sbus->iommu = iommu;
+        sbus->ofdev.dev.archdata.iommu = iommu;
 }
 
 /* This begs to be btfixup-ed by srmmu. */
@@ -166,7 +166,7 @@ static void iommu_flush_iotlb(iopte_t *iopte, unsigned int niopte)
 
 static u32 iommu_get_one(struct page *page, int npages, struct sbus_bus *sbus)
 {
-        struct iommu_struct *iommu = sbus->iommu;
+        struct iommu_struct *iommu = sbus->ofdev.dev.archdata.iommu;
         int ioptex;
         iopte_t *iopte, *iopte0;
         unsigned int busa, busa0;
@@ -291,7 +291,7 @@ static void iommu_get_scsi_sgl_pflush(struct scatterlist *sg, int sz, struct sbu
 
 static void iommu_release_one(u32 busa, int npages, struct sbus_bus *sbus)
 {
-        struct iommu_struct *iommu = sbus->iommu;
+        struct iommu_struct *iommu = sbus->ofdev.dev.archdata.iommu;
         int ioptex;
         int i;
 
@@ -334,7 +334,7 @@ static int iommu_map_dma_area(dma_addr_t *pba, unsigned long va,
     unsigned long addr, int len)
 {
         unsigned long page, end;
-        struct iommu_struct *iommu = sbus_root->iommu;
+        struct iommu_struct *iommu = sbus_root->ofdev.dev.archdata.iommu;
         iopte_t *iopte = iommu->page_table;
         iopte_t *first;
         int ioptex;
@@ -399,7 +399,7 @@ static int iommu_map_dma_area(dma_addr_t *pba, unsigned long va,
 
 static void iommu_unmap_dma_area(unsigned long busa, int len)
 {
-        struct iommu_struct *iommu = sbus_root->iommu;
+        struct iommu_struct *iommu = sbus_root->ofdev.dev.archdata.iommu;
         iopte_t *iopte = iommu->page_table;
         unsigned long end;
         int ioptex = (busa - iommu->start) >> PAGE_SHIFT;
@@ -420,7 +420,7 @@ static void iommu_unmap_dma_area(unsigned long busa, int len)
 
 static struct page *iommu_translate_dvma(unsigned long busa)
 {
-        struct iommu_struct *iommu = sbus_root->iommu;
+        struct iommu_struct *iommu = sbus_root->ofdev.dev.archdata.iommu;
         iopte_t *iopte = iommu->page_table;
 
         iopte += ((busa - iommu->start) >> PAGE_SHIFT);
diff --git a/arch/sparc/mm/sun4c.c b/arch/sparc/mm/sun4c.c
index 79d60d86f6f8..005a3e72d4f2 100644
--- a/arch/sparc/mm/sun4c.c
+++ b/arch/sparc/mm/sun4c.c
@@ -268,7 +268,6 @@ static inline void sun4c_init_clean_mmu(unsigned long kernel_end)
         unsigned char savectx, ctx;
 
         savectx = sun4c_get_context();
-        kernel_end = SUN4C_REAL_PGDIR_ALIGN(kernel_end);
         for (ctx = 0; ctx < num_contexts; ctx++) {
                 sun4c_set_context(ctx);
                 for (vaddr = 0; vaddr < 0x20000000; vaddr += SUN4C_REAL_PGDIR_SIZE)
@@ -2064,7 +2063,6 @@ void __init sun4c_paging_init(void)
         unsigned long end_pfn, pages_avail;
 
         kernel_end = (unsigned long) &end;
-        kernel_end += (SUN4C_REAL_PGDIR_SIZE * 4);
         kernel_end = SUN4C_REAL_PGDIR_ALIGN(kernel_end);
 
         pages_avail = 0;