Merge branches 'boards' and 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6

9 files changed, 161 insertions, 383 deletions

diff --git a/arch/sparc/mm/Makefile b/arch/sparc/mm/Makefile
index 109c8b22cb3..ea88955d97f 100644
--- a/arch/sparc/mm/Makefile
+++ b/arch/sparc/mm/Makefile
@@ -3,13 +3,8 @@
 
 EXTRA_AFLAGS := -ansi
 
-obj-y    := fault.o init.o loadmmu.o generic.o extable.o btfixup.o
-
-ifeq ($(CONFIG_SUN4),y)
-obj-y	 += nosrmmu.o
-else
-obj-y	 += srmmu.o iommu.o io-unit.o hypersparc.o viking.o tsunami.o swift.o
-endif
+obj-y	:= fault.o init.o loadmmu.o generic.o extable.o btfixup.o \
+	    srmmu.o iommu.o io-unit.o hypersparc.o viking.o tsunami.o swift.o
 
 ifdef CONFIG_HIGHMEM
 obj-y	+= highmem.o
diff --git a/arch/sparc/mm/btfixup.c b/arch/sparc/mm/btfixup.c
index a312d127d47..5175ac2f482 100644
--- a/arch/sparc/mm/btfixup.c
+++ b/arch/sparc/mm/btfixup.c
@@ -20,11 +20,7 @@
 
 extern char *srmmu_name;
 static char version[] __initdata = "Boot time fixup v1.6. 4/Mar/98 Jakub Jelinek (jj@ultra.linux.cz). Patching kernel for ";
-#ifdef CONFIG_SUN4
-static char str_sun4c[] __initdata = "sun4\n";
-#else
 static char str_sun4c[] __initdata = "sun4c\n";
-#endif
 static char str_srmmu[] __initdata = "srmmu[%s]/";
 static char str_iommu[] __initdata = "iommu\n";
 static char str_iounit[] __initdata = "io-unit\n";
@@ -86,7 +82,7 @@ void __init btfixup(void)
 	if (!visited) {
 		visited++;
 		printk(version);
-		if (ARCH_SUN4C_SUN4)
+		if (ARCH_SUN4C)
 			printk(str_sun4c);
 		else {
 			printk(str_srmmu, srmmu_name);
diff --git a/arch/sparc/mm/fault.c b/arch/sparc/mm/fault.c
index 3604c2e8670..a507e117466 100644
--- a/arch/sparc/mm/fault.c
+++ b/arch/sparc/mm/fault.c
@@ -191,7 +191,7 @@ asmlinkage void do_sparc_fault(struct pt_regs *regs, int text_fault, int write,
 	 * only copy the information from the master page table,
 	 * nothing more.
 	 */
-	if (!ARCH_SUN4C_SUN4 && address >= TASK_SIZE)
+	if (!ARCH_SUN4C && address >= TASK_SIZE)
 		goto vmalloc_fault;
 
 	info.si_code = SEGV_MAPERR;
diff --git a/arch/sparc/mm/init.c b/arch/sparc/mm/init.c
index e103f1bb377..677c1e187a2 100644
--- a/arch/sparc/mm/init.c
+++ b/arch/sparc/mm/init.c
@@ -23,6 +23,7 @@
 #include <linux/highmem.h>
 #include <linux/bootmem.h>
 #include <linux/pagemap.h>
+#include <linux/poison.h>
 
 #include <asm/system.h>
 #include <asm/vac-ops.h>
@@ -480,6 +481,7 @@ void free_initmem (void)
 	for (; addr < (unsigned long)(&__init_end); addr += PAGE_SIZE) {
 		struct page *p;
 
+		memset((void *)addr, POISON_FREE_INITMEM, PAGE_SIZE);
 		p = virt_to_page(addr);
 
 		ClearPageReserved(p);
@@ -488,20 +490,26 @@ void free_initmem (void)
 		totalram_pages++;
 		num_physpages++;
 	}
-	printk (KERN_INFO "Freeing unused kernel memory: %dk freed\n", (&__init_end - &__init_begin) >> 10);
+	printk(KERN_INFO "Freeing unused kernel memory: %dk freed\n",
+		(&__init_end - &__init_begin) >> 10);
 }
 
 #ifdef CONFIG_BLK_DEV_INITRD
 void free_initrd_mem(unsigned long start, unsigned long end)
 {
 	if (start < end)
-		printk (KERN_INFO "Freeing initrd memory: %ldk freed\n", (end - start) >> 10);
+		printk(KERN_INFO "Freeing initrd memory: %ldk freed\n",
+			(end - start) >> 10);
 	for (; start < end; start += PAGE_SIZE) {
-		struct page *p = virt_to_page(start);
+		struct page *p;
+
+		memset((void *)start, POISON_FREE_INITMEM, PAGE_SIZE);
+		p = virt_to_page(start);
 
 		ClearPageReserved(p);
 		init_page_count(p);
 		__free_page(p);
+		totalram_pages++;
 		num_physpages++;
 	}
 }
diff --git a/arch/sparc/mm/io-unit.c b/arch/sparc/mm/io-unit.c
index f167835db3d..daadf5f8805 100644
--- a/arch/sparc/mm/io-unit.c
+++ b/arch/sparc/mm/io-unit.c
@@ -12,10 +12,11 @@
 #include <linux/highmem.h>	/* pte_offset_map => kmap_atomic */
 #include <linux/bitops.h>
 #include <linux/scatterlist.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
 
 #include <asm/pgalloc.h>
 #include <asm/pgtable.h>
-#include <asm/sbus.h>
 #include <asm/io.h>
 #include <asm/io-unit.h>
 #include <asm/mxcc.h>
@@ -34,13 +35,10 @@
 #define IOPERM        (IOUPTE_CACHE | IOUPTE_WRITE | IOUPTE_VALID)
 #define MKIOPTE(phys) __iopte((((phys)>>4) & IOUPTE_PAGE) | IOPERM)
 
-void __init
-iounit_init(int sbi_node, int io_node, struct sbus_bus *sbus)
+static void __init iounit_iommu_init(struct of_device *op)
 {
-	iopte_t *xpt, *xptend;
 	struct iounit_struct *iounit;
-	struct linux_prom_registers iommu_promregs[PROMREG_MAX];
-	struct resource r;
+	iopte_t *xpt, *xptend;
 
 	iounit = kzalloc(sizeof(struct iounit_struct), GFP_ATOMIC);
 	if (!iounit) {
@@ -55,18 +53,13 @@ iounit_init(int sbi_node, int io_node, struct sbus_bus *sbus)
 	iounit->rotor[1] = IOUNIT_BMAP2_START;
 	iounit->rotor[2] = IOUNIT_BMAPM_START;
 
-	xpt = NULL;
-	if(prom_getproperty(sbi_node, "reg", (void *) iommu_promregs,
-			    sizeof(iommu_promregs)) != -1) {
-		prom_apply_generic_ranges(io_node, 0, iommu_promregs, 3);
-		memset(&r, 0, sizeof(r));
-		r.flags = iommu_promregs[2].which_io;
-		r.start = iommu_promregs[2].phys_addr;
-		xpt = (iopte_t *) sbus_ioremap(&r, 0, PAGE_SIZE * 16, "XPT");
+	xpt = of_ioremap(&op->resource[2], 0, PAGE_SIZE * 16, "XPT");
+	if (!xpt) {
+		prom_printf("SUN4D: Cannot map External Page Table.");
+		prom_halt();
 	}
-	if(!xpt) panic("Cannot map External Page Table.");
 	
-	sbus->ofdev.dev.archdata.iommu = iounit;
+	op->dev.archdata.iommu = iounit;
 	iounit->page_table = xpt;
 	spin_lock_init(&iounit->lock);
 	
@@ -75,6 +68,25 @@ iounit_init(int sbi_node, int io_node, struct sbus_bus *sbus)
 	     	iopte_val(*xpt++) = 0;
 }
 
+static int __init iounit_init(void)
+{
+	extern void sun4d_init_sbi_irq(void);
+	struct device_node *dp;
+
+	for_each_node_by_name(dp, "sbi") {
+		struct of_device *op = of_find_device_by_node(dp);
+
+		iounit_iommu_init(op);
+		of_propagate_archdata(op);
+	}
+
+	sun4d_init_sbi_irq();
+
+	return 0;
+}
+
+subsys_initcall(iounit_init);
+
 /* One has to hold iounit->lock to call this */
 static unsigned long iounit_get_area(struct iounit_struct *iounit, unsigned long vaddr, int size)
 {
@@ -124,10 +136,10 @@ nexti:	scan = find_next_zero_bit(iounit->bmap, limit, scan);
 	return vaddr;
 }
 
-static __u32 iounit_get_scsi_one(char *vaddr, unsigned long len, struct sbus_bus *sbus)
+static __u32 iounit_get_scsi_one(struct device *dev, char *vaddr, unsigned long len)
 {
+	struct iounit_struct *iounit = dev->archdata.iommu;
 	unsigned long ret, flags;
-	struct iounit_struct *iounit = sbus->ofdev.dev.archdata.iommu;
 	
 	spin_lock_irqsave(&iounit->lock, flags);
 	ret = iounit_get_area(iounit, (unsigned long)vaddr, len);
@@ -135,10 +147,10 @@ static __u32 iounit_get_scsi_one(char *vaddr, unsigned long len, struct sbus_bus
 	return ret;
 }
 
-static void iounit_get_scsi_sgl(struct scatterlist *sg, int sz, struct sbus_bus *sbus)
+static void iounit_get_scsi_sgl(struct device *dev, struct scatterlist *sg, int sz)
 {
+	struct iounit_struct *iounit = dev->archdata.iommu;
 	unsigned long flags;
-	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);
@@ -151,10 +163,10 @@ static void iounit_get_scsi_sgl(struct scatterlist *sg, int sz, struct sbus_bus
 	spin_unlock_irqrestore(&iounit->lock, flags);
 }
 
-static void iounit_release_scsi_one(__u32 vaddr, unsigned long len, struct sbus_bus *sbus)
+static void iounit_release_scsi_one(struct device *dev, __u32 vaddr, unsigned long len)
 {
+	struct iounit_struct *iounit = dev->archdata.iommu;
 	unsigned long flags;
-	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;
@@ -165,11 +177,11 @@ static void iounit_release_scsi_one(__u32 vaddr, unsigned long len, struct sbus_
 	spin_unlock_irqrestore(&iounit->lock, flags);
 }
 
-static void iounit_release_scsi_sgl(struct scatterlist *sg, int sz, struct sbus_bus *sbus)
+static void iounit_release_scsi_sgl(struct device *dev, struct scatterlist *sg, int sz)
 {
+	struct iounit_struct *iounit = dev->archdata.iommu;
 	unsigned long flags;
 	unsigned long vaddr, len;
-	struct iounit_struct *iounit = sbus->ofdev.dev.archdata.iommu;
 
 	spin_lock_irqsave(&iounit->lock, flags);
 	while (sz != 0) {
@@ -185,12 +197,12 @@ static void iounit_release_scsi_sgl(struct scatterlist *sg, int sz, struct sbus_
 }
 
 #ifdef CONFIG_SBUS
-static int iounit_map_dma_area(dma_addr_t *pba, unsigned long va, __u32 addr, int len)
+static int iounit_map_dma_area(struct device *dev, dma_addr_t *pba, unsigned long va, __u32 addr, int len)
 {
+	struct iounit_struct *iounit = dev->archdata.iommu;
 	unsigned long page, end;
 	pgprot_t dvma_prot;
 	iopte_t *iopte;
-	struct sbus_bus *sbus;
 
 	*pba = addr;
 
@@ -212,12 +224,8 @@ 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 = sbus->ofdev.dev.archdata.iommu;
-
-				iopte = (iopte_t *)(iounit->page_table + i);
-				*iopte = MKIOPTE(__pa(page));
-			}
+			iopte = (iopte_t *)(iounit->page_table + i);
+			*iopte = MKIOPTE(__pa(page));
 		}
 		addr += PAGE_SIZE;
 		va += PAGE_SIZE;
@@ -228,23 +236,10 @@ static int iounit_map_dma_area(dma_addr_t *pba, unsigned long va, __u32 addr, in
 	return 0;
 }
 
-static void iounit_unmap_dma_area(unsigned long addr, int len)
+static void iounit_unmap_dma_area(struct device *dev, unsigned long addr, int len)
 {
 	/* XXX Somebody please fill this in */
 }
-
-/* XXX We do not pass sbus device here, bad. */
-static struct page *iounit_translate_dvma(unsigned long addr)
-{
-	struct sbus_bus *sbus = sbus_root;	/* They are all the same */
-	struct iounit_struct *iounit = sbus->ofdev.dev.archdata.iommu;
-	int i;
-	iopte_t *iopte;
-
-	i = ((addr - IOUNIT_DMA_BASE) >> PAGE_SHIFT);
-	iopte = (iopte_t *)(iounit->page_table + i);
-	return pfn_to_page(iopte_val(*iopte) >> (PAGE_SHIFT-4)); /* XXX sun4d guru, help */
-}
 #endif
 
 static char *iounit_lockarea(char *vaddr, unsigned long len)
@@ -271,54 +266,5 @@ void __init ld_mmu_iounit(void)
 #ifdef CONFIG_SBUS
 	BTFIXUPSET_CALL(mmu_map_dma_area, iounit_map_dma_area, BTFIXUPCALL_NORM);
 	BTFIXUPSET_CALL(mmu_unmap_dma_area, iounit_unmap_dma_area, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(mmu_translate_dvma, iounit_translate_dvma, BTFIXUPCALL_NORM);
 #endif
 }
-
-__u32 iounit_map_dma_init(struct sbus_bus *sbus, int size)
-{
-	int i, j, k, npages;
-	unsigned long rotor, scan, limit;
-	unsigned long flags;
-	__u32 ret;
-	struct iounit_struct *iounit = sbus->ofdev.dev.archdata.iommu;
-
-        npages = (size + (PAGE_SIZE-1)) >> PAGE_SHIFT;
-	i = 0x0213;
-	spin_lock_irqsave(&iounit->lock, flags);
-next:	j = (i & 15);
-	rotor = iounit->rotor[j - 1];
-	limit = iounit->limit[j];
-	scan = rotor;
-nexti:	scan = find_next_zero_bit(iounit->bmap, limit, scan);
-	if (scan + npages > limit) {
-		if (limit != rotor) {
-			limit = rotor;
-			scan = iounit->limit[j - 1];
-			goto nexti;
-		}
-		i >>= 4;
-		if (!(i & 15))
-			panic("iounit_map_dma_init: Couldn't find free iopte slots for %d bytes\n", size);
-		goto next;
-	}
-	for (k = 1, scan++; k < npages; k++)
-		if (test_bit(scan++, iounit->bmap))
-			goto nexti;
-	iounit->rotor[j - 1] = (scan < limit) ? scan : iounit->limit[j - 1];
-	scan -= npages;
-	ret = IOUNIT_DMA_BASE + (scan << PAGE_SHIFT);
-	for (k = 0; k < npages; k++, scan++)
-		set_bit(scan, iounit->bmap);
-	spin_unlock_irqrestore(&iounit->lock, flags);
-	return ret;
-}
-
-__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 = 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 4b934270f05..e7a499e3aa3 100644
--- a/arch/sparc/mm/iommu.c
+++ b/arch/sparc/mm/iommu.c
@@ -13,10 +13,11 @@
 #include <linux/slab.h>
 #include <linux/highmem.h>	/* pte_offset_map => kmap_atomic */
 #include <linux/scatterlist.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
 
 #include <asm/pgalloc.h>
 #include <asm/pgtable.h>
-#include <asm/sbus.h>
 #include <asm/io.h>
 #include <asm/mxcc.h>
 #include <asm/mbus.h>
@@ -55,30 +56,21 @@ static pgprot_t dvma_prot;		/* Consistent mapping pte flags */
 #define IOPERM        (IOPTE_CACHE | IOPTE_WRITE | IOPTE_VALID)
 #define MKIOPTE(pfn, perm) (((((pfn)<<8) & IOPTE_PAGE) | (perm)) & ~IOPTE_WAZ)
 
-void __init
-iommu_init(int iommund, struct sbus_bus *sbus)
+static void __init sbus_iommu_init(struct of_device *op)
 {
-	unsigned int impl, vers;
-	unsigned long tmp;
 	struct iommu_struct *iommu;
-	struct linux_prom_registers iommu_promregs[PROMREG_MAX];
-	struct resource r;
+	unsigned int impl, vers;
 	unsigned long *bitmap;
+	unsigned long tmp;
 
 	iommu = kmalloc(sizeof(struct iommu_struct), GFP_ATOMIC);
 	if (!iommu) {
 		prom_printf("Unable to allocate iommu structure\n");
 		prom_halt();
 	}
-	iommu->regs = NULL;
-	if (prom_getproperty(iommund, "reg", (void *) iommu_promregs,
-			 sizeof(iommu_promregs)) != -1) {
-		memset(&r, 0, sizeof(r));
-		r.flags = iommu_promregs[0].which_io;
-		r.start = iommu_promregs[0].phys_addr;
-		iommu->regs = (struct iommu_regs *)
-			sbus_ioremap(&r, 0, PAGE_SIZE * 3, "iommu_regs");
-	}
+
+	iommu->regs = of_ioremap(&op->resource[0], 0, PAGE_SIZE * 3,
+				 "iommu_regs");
 	if (!iommu->regs) {
 		prom_printf("Cannot map IOMMU registers\n");
 		prom_halt();
@@ -128,13 +120,29 @@ iommu_init(int iommund, struct sbus_bus *sbus)
 	else
 		iommu->usemap.num_colors = 1;
 
-	printk("IOMMU: impl %d vers %d table 0x%p[%d B] map [%d b]\n",
-	    impl, vers, iommu->page_table,
-	    (int)(IOMMU_NPTES*sizeof(iopte_t)), (int)IOMMU_NPTES);
+	printk(KERN_INFO "IOMMU: impl %d vers %d table 0x%p[%d B] map [%d b]\n",
+	       impl, vers, iommu->page_table,
+	       (int)(IOMMU_NPTES*sizeof(iopte_t)), (int)IOMMU_NPTES);
+
+	op->dev.archdata.iommu = iommu;
+}
+
+static int __init iommu_init(void)
+{
+	struct device_node *dp;
+
+	for_each_node_by_name(dp, "iommu") {
+		struct of_device *op = of_find_device_by_node(dp);
+
+		sbus_iommu_init(op);
+		of_propagate_archdata(op);
+	}
 
-	sbus->ofdev.dev.archdata.iommu = iommu;
+	return 0;
 }
 
+subsys_initcall(iommu_init);
+
 /* This begs to be btfixup-ed by srmmu. */
 /* Flush the iotlb entries to ram. */
 /* This could be better if we didn't have to flush whole pages. */
@@ -164,9 +172,9 @@ 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)
+static u32 iommu_get_one(struct device *dev, struct page *page, int npages)
 {
-	struct iommu_struct *iommu = sbus->ofdev.dev.archdata.iommu;
+	struct iommu_struct *iommu = dev->archdata.iommu;
 	int ioptex;
 	iopte_t *iopte, *iopte0;
 	unsigned int busa, busa0;
@@ -194,8 +202,7 @@ static u32 iommu_get_one(struct page *page, int npages, struct sbus_bus *sbus)
 	return busa0;
 }
 
-static u32 iommu_get_scsi_one(char *vaddr, unsigned int len,
-    struct sbus_bus *sbus)
+static u32 iommu_get_scsi_one(struct device *dev, char *vaddr, unsigned int len)
 {
 	unsigned long off;
 	int npages;
@@ -205,22 +212,22 @@ static u32 iommu_get_scsi_one(char *vaddr, unsigned int len,
 	off = (unsigned long)vaddr & ~PAGE_MASK;
 	npages = (off + len + PAGE_SIZE-1) >> PAGE_SHIFT;
 	page = virt_to_page((unsigned long)vaddr & PAGE_MASK);
-	busa = iommu_get_one(page, npages, sbus);
+	busa = iommu_get_one(dev, page, npages);
 	return busa + off;
 }
 
-static __u32 iommu_get_scsi_one_noflush(char *vaddr, unsigned long len, struct sbus_bus *sbus)
+static __u32 iommu_get_scsi_one_noflush(struct device *dev, char *vaddr, unsigned long len)
 {
-	return iommu_get_scsi_one(vaddr, len, sbus);
+	return iommu_get_scsi_one(dev, vaddr, len);
 }
 
-static __u32 iommu_get_scsi_one_gflush(char *vaddr, unsigned long len, struct sbus_bus *sbus)
+static __u32 iommu_get_scsi_one_gflush(struct device *dev, char *vaddr, unsigned long len)
 {
 	flush_page_for_dma(0);
-	return iommu_get_scsi_one(vaddr, len, sbus);
+	return iommu_get_scsi_one(dev, vaddr, len);
 }
 
-static __u32 iommu_get_scsi_one_pflush(char *vaddr, unsigned long len, struct sbus_bus *sbus)
+static __u32 iommu_get_scsi_one_pflush(struct device *dev, char *vaddr, unsigned long len)
 {
 	unsigned long page = ((unsigned long) vaddr) & PAGE_MASK;
 
@@ -228,23 +235,23 @@ static __u32 iommu_get_scsi_one_pflush(char *vaddr, unsigned long len, struct sb
 		flush_page_for_dma(page);
 		page += PAGE_SIZE;
 	}
-	return iommu_get_scsi_one(vaddr, len, sbus);
+	return iommu_get_scsi_one(dev, vaddr, len);
 }
 
-static void iommu_get_scsi_sgl_noflush(struct scatterlist *sg, int sz, struct sbus_bus *sbus)
+static void iommu_get_scsi_sgl_noflush(struct device *dev, struct scatterlist *sg, int sz)
 {
 	int n;
 
 	while (sz != 0) {
 		--sz;
 		n = (sg->length + sg->offset + PAGE_SIZE-1) >> PAGE_SHIFT;
-		sg->dvma_address = iommu_get_one(sg_page(sg), n, sbus) + sg->offset;
+		sg->dvma_address = iommu_get_one(dev, sg_page(sg), n) + sg->offset;
 		sg->dvma_length = (__u32) sg->length;
 		sg = sg_next(sg);
 	}
 }
 
-static void iommu_get_scsi_sgl_gflush(struct scatterlist *sg, int sz, struct sbus_bus *sbus)
+static void iommu_get_scsi_sgl_gflush(struct device *dev, struct scatterlist *sg, int sz)
 {
 	int n;
 
@@ -252,13 +259,13 @@ static void iommu_get_scsi_sgl_gflush(struct scatterlist *sg, int sz, struct sbu
 	while (sz != 0) {
 		--sz;
 		n = (sg->length + sg->offset + PAGE_SIZE-1) >> PAGE_SHIFT;
-		sg->dvma_address = iommu_get_one(sg_page(sg), n, sbus) + sg->offset;
+		sg->dvma_address = iommu_get_one(dev, sg_page(sg), n) + sg->offset;
 		sg->dvma_length = (__u32) sg->length;
 		sg = sg_next(sg);
 	}
 }
 
-static void iommu_get_scsi_sgl_pflush(struct scatterlist *sg, int sz, struct sbus_bus *sbus)
+static void iommu_get_scsi_sgl_pflush(struct device *dev, struct scatterlist *sg, int sz)
 {
 	unsigned long page, oldpage = 0;
 	int n, i;
@@ -283,15 +290,15 @@ static void iommu_get_scsi_sgl_pflush(struct scatterlist *sg, int sz, struct sbu
 			}
 		}
 
-		sg->dvma_address = iommu_get_one(sg_page(sg), n, sbus) + sg->offset;
+		sg->dvma_address = iommu_get_one(dev, sg_page(sg), n) + sg->offset;
 		sg->dvma_length = (__u32) sg->length;
 		sg = sg_next(sg);
 	}
 }
 
-static void iommu_release_one(u32 busa, int npages, struct sbus_bus *sbus)
+static void iommu_release_one(struct device *dev, u32 busa, int npages)
 {
-	struct iommu_struct *iommu = sbus->ofdev.dev.archdata.iommu;
+	struct iommu_struct *iommu = dev->archdata.iommu;
 	int ioptex;
 	int i;
 
@@ -305,17 +312,17 @@ static void iommu_release_one(u32 busa, int npages, struct sbus_bus *sbus)
 	bit_map_clear(&iommu->usemap, ioptex, npages);
 }
 
-static void iommu_release_scsi_one(__u32 vaddr, unsigned long len, struct sbus_bus *sbus)
+static void iommu_release_scsi_one(struct device *dev, __u32 vaddr, unsigned long len)
 {
 	unsigned long off;
 	int npages;
 
 	off = vaddr & ~PAGE_MASK;
 	npages = (off + len + PAGE_SIZE-1) >> PAGE_SHIFT;
-	iommu_release_one(vaddr & PAGE_MASK, npages, sbus);
+	iommu_release_one(dev, vaddr & PAGE_MASK, npages);
 }
 
-static void iommu_release_scsi_sgl(struct scatterlist *sg, int sz, struct sbus_bus *sbus)
+static void iommu_release_scsi_sgl(struct device *dev, struct scatterlist *sg, int sz)
 {
 	int n;
 
@@ -323,18 +330,18 @@ static void iommu_release_scsi_sgl(struct scatterlist *sg, int sz, struct sbus_b
 		--sz;
 
 		n = (sg->length + sg->offset + PAGE_SIZE-1) >> PAGE_SHIFT;
-		iommu_release_one(sg->dvma_address & PAGE_MASK, n, sbus);
+		iommu_release_one(dev, sg->dvma_address & PAGE_MASK, n);
 		sg->dvma_address = 0x21212121;
 		sg = sg_next(sg);
 	}
 }
 
 #ifdef CONFIG_SBUS
-static int iommu_map_dma_area(dma_addr_t *pba, unsigned long va,
-    unsigned long addr, int len)
+static int iommu_map_dma_area(struct device *dev, dma_addr_t *pba, unsigned long va,
+			      unsigned long addr, int len)
 {
+	struct iommu_struct *iommu = dev->archdata.iommu;
 	unsigned long page, end;
-	struct iommu_struct *iommu = sbus_root->ofdev.dev.archdata.iommu;
 	iopte_t *iopte = iommu->page_table;
 	iopte_t *first;
 	int ioptex;
@@ -397,9 +404,9 @@ static int iommu_map_dma_area(dma_addr_t *pba, unsigned long va,
 	return 0;
 }
 
-static void iommu_unmap_dma_area(unsigned long busa, int len)
+static void iommu_unmap_dma_area(struct device *dev, unsigned long busa, int len)
 {
-	struct iommu_struct *iommu = sbus_root->ofdev.dev.archdata.iommu;
+	struct iommu_struct *iommu = dev->archdata.iommu;
 	iopte_t *iopte = iommu->page_table;
 	unsigned long end;
 	int ioptex = (busa - iommu->start) >> PAGE_SHIFT;
@@ -417,15 +424,6 @@ static void iommu_unmap_dma_area(unsigned long busa, int len)
 	iommu_invalidate(iommu->regs);
 	bit_map_clear(&iommu->usemap, ioptex, len >> PAGE_SHIFT);
 }
-
-static struct page *iommu_translate_dvma(unsigned long busa)
-{
-	struct iommu_struct *iommu = sbus_root->ofdev.dev.archdata.iommu;
-	iopte_t *iopte = iommu->page_table;
-
-	iopte += ((busa - iommu->start) >> PAGE_SHIFT);
-	return pfn_to_page((iopte_val(*iopte) & IOPTE_PAGE) >> (PAGE_SHIFT-4));
-}
 #endif
 
 static char *iommu_lockarea(char *vaddr, unsigned long len)
@@ -461,7 +459,6 @@ void __init ld_mmu_iommu(void)
 #ifdef CONFIG_SBUS
 	BTFIXUPSET_CALL(mmu_map_dma_area, iommu_map_dma_area, BTFIXUPCALL_NORM);
 	BTFIXUPSET_CALL(mmu_unmap_dma_area, iommu_unmap_dma_area, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(mmu_translate_dvma, iommu_translate_dvma, BTFIXUPCALL_NORM);
 #endif
 
 	if (viking_mxcc_present || srmmu_modtype == HyperSparc) {
diff --git a/arch/sparc/mm/nosrmmu.c b/arch/sparc/mm/nosrmmu.c
deleted file mode 100644
index 3701f70fc30..00000000000
--- a/arch/sparc/mm/nosrmmu.c
+++ /dev/null
@@ -1,59 +0,0 @@
-/*
- * nosrmmu.c: This file is a bunch of dummies for sun4 compiles, 
- *         so that it does not need srmmu and avoid ifdefs.
- *
- * Copyright (C) 1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
- */
-
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/init.h>
-#include <asm/mbus.h>
-#include <asm/sbus.h>
-
-static char shouldnothappen[] __initdata = "SUN4 kernel can only run on SUN4\n";
-
-enum mbus_module srmmu_modtype;
-void *srmmu_nocache_pool;
-
-int vac_cache_size = 0;
-
-static void __init should_not_happen(void)
-{
-	prom_printf(shouldnothappen);
-	prom_halt();
-}
-
-void __init srmmu_frob_mem_map(unsigned long start_mem)
-{
-	should_not_happen();
-}
-
-unsigned long __init srmmu_paging_init(unsigned long start_mem, unsigned long end_mem)
-{
-	should_not_happen();
-	return 0;
-}
-
-void __init ld_mmu_srmmu(void)
-{
-	should_not_happen();
-}
-
-void srmmu_mapioaddr(unsigned long physaddr, unsigned long virt_addr, int bus_type, int rdonly)
-{
-}
-
-void srmmu_unmapioaddr(unsigned long virt_addr)
-{
-}
-
-__u32 iounit_map_dma_init(struct sbus_bus *sbus, int size)
-{
-	return 0;
-}
-
-__u32 iounit_map_dma_page(__u32 vaddr, void *addr, struct sbus_bus *sbus)
-{
-	return 0;
-}
diff --git a/arch/sparc/mm/srmmu.c b/arch/sparc/mm/srmmu.c
index ee30462598f..6a5d7cabc04 100644
--- a/arch/sparc/mm/srmmu.c
+++ b/arch/sparc/mm/srmmu.c
@@ -31,7 +31,6 @@
 #include <asm/mbus.h>
 #include <asm/cache.h>
 #include <asm/oplib.h>
-#include <asm/sbus.h>
 #include <asm/asi.h>
 #include <asm/msi.h>
 #include <asm/mmu_context.h>
diff --git a/arch/sparc/mm/sun4c.c b/arch/sparc/mm/sun4c.c
index d1782f6368b..fe65aeeb394 100644
--- a/arch/sparc/mm/sun4c.c
+++ b/arch/sparc/mm/sun4c.c
@@ -31,7 +31,6 @@
 #include <asm/oplib.h>
 #include <asm/openprom.h>
 #include <asm/mmu_context.h>
-#include <asm/sun4paddr.h>
 #include <asm/highmem.h>
 #include <asm/btfixup.h>
 #include <asm/cacheflush.h>
@@ -52,15 +51,11 @@ extern int num_segmaps, num_contexts;
 
 extern unsigned long page_kernel;
 
-#ifdef CONFIG_SUN4
-#define SUN4C_VAC_SIZE sun4c_vacinfo.num_bytes
-#else
 /* That's it, we prom_halt() on sun4c if the cache size is something other than 65536.
  * So let's save some cycles and just use that everywhere except for that bootup
  * sanity check.
  */
 #define SUN4C_VAC_SIZE 65536
-#endif
 
 #define SUN4C_KERNEL_BUCKETS 32
 
@@ -285,75 +280,32 @@ void __init sun4c_probe_vac(void)
 {
 	sun4c_disable_vac();
 
-	if (ARCH_SUN4) {
-		switch (idprom->id_machtype) {
-
-		case (SM_SUN4|SM_4_110):
-			sun4c_vacinfo.type = VAC_NONE;
-			sun4c_vacinfo.num_bytes = 0;
-			sun4c_vacinfo.linesize = 0;
-			sun4c_vacinfo.do_hwflushes = 0;
-			prom_printf("No VAC. Get some bucks and buy a real computer.");
-			prom_halt();
-			break;
-
-		case (SM_SUN4|SM_4_260):
-			sun4c_vacinfo.type = VAC_WRITE_BACK;
-			sun4c_vacinfo.num_bytes = 128 * 1024;
-			sun4c_vacinfo.linesize = 16;
-			sun4c_vacinfo.do_hwflushes = 0;
-			break;
-
-		case (SM_SUN4|SM_4_330):
-			sun4c_vacinfo.type = VAC_WRITE_THROUGH;
-			sun4c_vacinfo.num_bytes = 128 * 1024;
-			sun4c_vacinfo.linesize = 16;
-			sun4c_vacinfo.do_hwflushes = 0;
-			break;
-
-		case (SM_SUN4|SM_4_470):
-			sun4c_vacinfo.type = VAC_WRITE_BACK;
-			sun4c_vacinfo.num_bytes = 128 * 1024;
-			sun4c_vacinfo.linesize = 32;
-			sun4c_vacinfo.do_hwflushes = 0;
-			break;
-
-		default:
-			prom_printf("Cannot initialize VAC - weird sun4 model idprom->id_machtype = %d", idprom->id_machtype);
-			prom_halt();
-		};
+	if ((idprom->id_machtype == (SM_SUN4C | SM_4C_SS1)) ||
+	    (idprom->id_machtype == (SM_SUN4C | SM_4C_SS1PLUS))) {
+		/* PROM on SS1 lacks this info, to be super safe we
+		 * hard code it here since this arch is cast in stone.
+		 */
+		sun4c_vacinfo.num_bytes = 65536;
+		sun4c_vacinfo.linesize = 16;
 	} else {
-		sun4c_vacinfo.type = VAC_WRITE_THROUGH;
+		sun4c_vacinfo.num_bytes =
+		 prom_getintdefault(prom_root_node, "vac-size", 65536);
+		sun4c_vacinfo.linesize =
+		 prom_getintdefault(prom_root_node, "vac-linesize", 16);
+	}
+	sun4c_vacinfo.do_hwflushes =
+	 prom_getintdefault(prom_root_node, "vac-hwflush", 0);
 
-		if ((idprom->id_machtype == (SM_SUN4C | SM_4C_SS1)) ||
-		    (idprom->id_machtype == (SM_SUN4C | SM_4C_SS1PLUS))) {
-			/* PROM on SS1 lacks this info, to be super safe we
-			 * hard code it here since this arch is cast in stone.
-			 */
-			sun4c_vacinfo.num_bytes = 65536;
-			sun4c_vacinfo.linesize = 16;
-		} else {
-			sun4c_vacinfo.num_bytes =
-			 prom_getintdefault(prom_root_node, "vac-size", 65536);
-			sun4c_vacinfo.linesize =
-			 prom_getintdefault(prom_root_node, "vac-linesize", 16);
-		}
+	if (sun4c_vacinfo.do_hwflushes == 0)
 		sun4c_vacinfo.do_hwflushes =
-		 prom_getintdefault(prom_root_node, "vac-hwflush", 0);
-
-		if (sun4c_vacinfo.do_hwflushes == 0)
-			sun4c_vacinfo.do_hwflushes =
-			 prom_getintdefault(prom_root_node, "vac_hwflush", 0);
+		 prom_getintdefault(prom_root_node, "vac_hwflush", 0);
 
-		if (sun4c_vacinfo.num_bytes != 65536) {
-			prom_printf("WEIRD Sun4C VAC cache size, "
-				    "tell sparclinux@vger.kernel.org");
-			prom_halt();
-		}
+	if (sun4c_vacinfo.num_bytes != 65536) {
+		prom_printf("WEIRD Sun4C VAC cache size, "
+			    "tell sparclinux@vger.kernel.org");
+		prom_halt();
 	}
 
-	sun4c_vacinfo.num_lines =
-		(sun4c_vacinfo.num_bytes / sun4c_vacinfo.linesize);
 	switch (sun4c_vacinfo.linesize) {
 	case 16:
 		sun4c_vacinfo.log2lsize = 4;
@@ -447,49 +399,18 @@ static void __init patch_kernel_fault_handler(void)
 
 static void __init sun4c_probe_mmu(void)
 {
-	if (ARCH_SUN4) {
-		switch (idprom->id_machtype) {
-		case (SM_SUN4|SM_4_110):
-			prom_printf("No support for 4100 yet\n");
-			prom_halt();
-			num_segmaps = 256;
-			num_contexts = 8;
-			break;
-
-		case (SM_SUN4|SM_4_260):
-			/* should be 512 segmaps. when it get fixed */
-			num_segmaps = 256;
-			num_contexts = 16;
-			break;
-
-		case (SM_SUN4|SM_4_330):
-			num_segmaps = 256;
-			num_contexts = 16;
-			break;
-
-		case (SM_SUN4|SM_4_470):
-			/* should be 1024 segmaps. when it get fixed */
-			num_segmaps = 256;
-			num_contexts = 64;
-			break;
-		default:
-			prom_printf("Invalid SUN4 model\n");
-			prom_halt();
-		};
+	if ((idprom->id_machtype == (SM_SUN4C | SM_4C_SS1)) ||
+	    (idprom->id_machtype == (SM_SUN4C | SM_4C_SS1PLUS))) {
+		/* Hardcode these just to be safe, PROM on SS1 does
+		* not have this info available in the root node.
+		*/
+		num_segmaps = 128;
+		num_contexts = 8;
 	} else {
-		if ((idprom->id_machtype == (SM_SUN4C | SM_4C_SS1)) ||
-		    (idprom->id_machtype == (SM_SUN4C | SM_4C_SS1PLUS))) {
-			/* Hardcode these just to be safe, PROM on SS1 does
-		 	* not have this info available in the root node.
-		 	*/
-			num_segmaps = 128;
-			num_contexts = 8;
-		} else {
-			num_segmaps =
-			    prom_getintdefault(prom_root_node, "mmu-npmg", 128);
-			num_contexts =
-			    prom_getintdefault(prom_root_node, "mmu-nctx", 0x8);
-		}
+		num_segmaps =
+		    prom_getintdefault(prom_root_node, "mmu-npmg", 128);
+		num_contexts =
+		    prom_getintdefault(prom_root_node, "mmu-nctx", 0x8);
 	}
 	patch_kernel_fault_handler();
 }
@@ -501,18 +422,14 @@ void __init sun4c_probe_memerr_reg(void)
 	int node;
 	struct linux_prom_registers regs[1];
 
-	if (ARCH_SUN4) {
-		sun4c_memerr_reg = ioremap(sun4_memreg_physaddr, PAGE_SIZE);
-	} else {
-		node = prom_getchild(prom_root_node);
-		node = prom_searchsiblings(prom_root_node, "memory-error");
-		if (!node)
-			return;
-		if (prom_getproperty(node, "reg", (char *)regs, sizeof(regs)) <= 0)
-			return;
-		/* hmm I think regs[0].which_io is zero here anyways */
-		sun4c_memerr_reg = ioremap(regs[0].phys_addr, regs[0].reg_size);
-	}
+	node = prom_getchild(prom_root_node);
+	node = prom_searchsiblings(prom_root_node, "memory-error");
+	if (!node)
+		return;
+	if (prom_getproperty(node, "reg", (char *)regs, sizeof(regs)) <= 0)
+		return;
+	/* hmm I think regs[0].which_io is zero here anyways */
+	sun4c_memerr_reg = ioremap(regs[0].phys_addr, regs[0].reg_size);
 }
 
 static inline void sun4c_init_ss2_cache_bug(void)
@@ -521,7 +438,6 @@ static inline void sun4c_init_ss2_cache_bug(void)
 
 	if ((idprom->id_machtype == (SM_SUN4C | SM_4C_SS2)) ||
 	    (idprom->id_machtype == (SM_SUN4C | SM_4C_IPX)) ||
-	    (idprom->id_machtype == (SM_SUN4 | SM_4_330)) ||
 	    (idprom->id_machtype == (SM_SUN4C | SM_4C_ELC))) {
 		/* Whee.. */
 		printk("SS2 cache bug detected, uncaching trap table page\n");
@@ -532,8 +448,8 @@ static inline void sun4c_init_ss2_cache_bug(void)
 }
 
 /* Addr is always aligned on a page boundary for us already. */
-static int sun4c_map_dma_area(dma_addr_t *pba, unsigned long va,
-    unsigned long addr, int len)
+static int sun4c_map_dma_area(struct device *dev, dma_addr_t *pba, unsigned long va,
+			      unsigned long addr, int len)
 {
 	unsigned long page, end;
 
@@ -555,14 +471,7 @@ static int sun4c_map_dma_area(dma_addr_t *pba, unsigned long va,
 	return 0;
 }
 
-static struct page *sun4c_translate_dvma(unsigned long busa)
-{
-	/* Fortunately for us, bus_addr == uncached_virt in sun4c. */
-	unsigned long pte = sun4c_get_pte(busa);
-	return pfn_to_page(pte & SUN4C_PFN_MASK);
-}
-
-static void sun4c_unmap_dma_area(unsigned long busa, int len)
+static void sun4c_unmap_dma_area(struct device *dev, unsigned long busa, int len)
 {
 	/* Fortunately for us, bus_addr == uncached_virt in sun4c. */
 	/* XXX Implement this */
@@ -624,11 +533,7 @@ static inline void sun4c_init_map_kernelprom(unsigned long kernel_end)
 {
 	unsigned long vaddr;
 	unsigned char pseg, ctx;
-#ifdef CONFIG_SUN4
-	/* sun4/110 and 260 have no kadb. */
-	if ((idprom->id_machtype != (SM_SUN4 | SM_4_260)) && 
-	    (idprom->id_machtype != (SM_SUN4 | SM_4_110))) {
-#endif
+
 	for (vaddr = KADB_DEBUGGER_BEGVM;
 	     vaddr < LINUX_OPPROM_ENDVM;
 	     vaddr += SUN4C_REAL_PGDIR_SIZE) {
@@ -640,9 +545,7 @@ static inline void sun4c_init_map_kernelprom(unsigned long kernel_end)
 			fix_permissions(vaddr, _SUN4C_PAGE_PRIV, 0);
 		}
 	}
-#ifdef CONFIG_SUN4
-	}
-#endif
+
 	for (vaddr = KERNBASE; vaddr < kernel_end; vaddr += SUN4C_REAL_PGDIR_SIZE) {
 		pseg = sun4c_get_segmap(vaddr);
 		mmu_entry_pool[pseg].locked = 1;
@@ -1048,14 +951,10 @@ static struct thread_info *sun4c_alloc_thread_info(void)
 	 * so we must flush the cache to guarantee consistency.
 	 */
 	sun4c_flush_page(pages);
-#ifndef CONFIG_SUN4	
 	sun4c_flush_page(pages + PAGE_SIZE);
-#endif
 
 	sun4c_put_pte(addr, BUCKET_PTE(pages));
-#ifndef CONFIG_SUN4	
 	sun4c_put_pte(addr + PAGE_SIZE, BUCKET_PTE(pages + PAGE_SIZE));
-#endif
 
 #ifdef CONFIG_DEBUG_STACK_USAGE
 	memset((void *)addr, 0, PAGE_SIZE << THREAD_INFO_ORDER);
@@ -1072,13 +971,11 @@ static void sun4c_free_thread_info(struct thread_info *ti)
 
 	/* We are deleting a mapping, so the flush here is mandatory. */
 	sun4c_flush_page(tiaddr);
-#ifndef CONFIG_SUN4	
 	sun4c_flush_page(tiaddr + PAGE_SIZE);
-#endif
+
 	sun4c_put_pte(tiaddr, 0);
-#ifndef CONFIG_SUN4	
 	sun4c_put_pte(tiaddr + PAGE_SIZE, 0);
-#endif
+
 	sun4c_bucket[entry] = BUCKET_EMPTY;
 	if (entry < sun4c_lowbucket_avail)
 		sun4c_lowbucket_avail = entry;
@@ -1211,7 +1108,7 @@ static void sun4c_unlockarea(char *vaddr, unsigned long size)
  * by implication and fool the page locking code above
  * if passed to by mistake.
  */
-static __u32 sun4c_get_scsi_one(char *bufptr, unsigned long len, struct sbus_bus *sbus)
+static __u32 sun4c_get_scsi_one(struct device *dev, char *bufptr, unsigned long len)
 {
 	unsigned long page;
 
@@ -1223,7 +1120,7 @@ static __u32 sun4c_get_scsi_one(char *bufptr, unsigned long len, struct sbus_bus
 	return (__u32)sun4c_lockarea(bufptr, len);
 }
 
-static void sun4c_get_scsi_sgl(struct scatterlist *sg, int sz, struct sbus_bus *sbus)
+static void sun4c_get_scsi_sgl(struct device *dev, struct scatterlist *sg, int sz)
 {
 	while (sz != 0) {
 		--sz;
@@ -1233,14 +1130,14 @@ static void sun4c_get_scsi_sgl(struct scatterlist *sg, int sz, struct sbus_bus *
 	}
 }
 
-static void sun4c_release_scsi_one(__u32 bufptr, unsigned long len, struct sbus_bus *sbus)
+static void sun4c_release_scsi_one(struct device *dev, __u32 bufptr, unsigned long len)
 {
 	if (bufptr < sun4c_iobuffer_start)
 		return; /* On kernel stack or similar, see above */
 	sun4c_unlockarea((char *)bufptr, len);
 }
 
-static void sun4c_release_scsi_sgl(struct scatterlist *sg, int sz, struct sbus_bus *sbus)
+static void sun4c_release_scsi_sgl(struct device *dev, struct scatterlist *sg, int sz)
 {
 	while (sz != 0) {
 		--sz;
@@ -2263,7 +2160,6 @@ void __init ld_mmu_sun4c(void)
 
 	BTFIXUPSET_CALL(mmu_map_dma_area, sun4c_map_dma_area, BTFIXUPCALL_NORM);
 	BTFIXUPSET_CALL(mmu_unmap_dma_area, sun4c_unmap_dma_area, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(mmu_translate_dvma, sun4c_translate_dvma, BTFIXUPCALL_NORM);
 
 	BTFIXUPSET_CALL(sparc_mapiorange, sun4c_mapiorange, BTFIXUPCALL_NORM);
 	BTFIXUPSET_CALL(sparc_unmapiorange, sun4c_unmapiorange, BTFIXUPCALL_NORM);