sh: Split out ioremap in to _32 and _64 variants.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 0 insertions, 388 deletions

diff --git a/arch/sh64/mm/ioremap.c b/arch/sh64/mm/ioremap.c
deleted file mode 100644
index 535304e6601f..000000000000
--- a/arch/sh64/mm/ioremap.c
+++ /dev/null
@@ -1,388 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * arch/sh64/mm/ioremap.c
- *
- * Copyright (C) 2000, 2001  Paolo Alberelli
- * Copyright (C) 2003, 2004  Paul Mundt
- *
- * Mostly derived from arch/sh/mm/ioremap.c which, in turn is mostly
- * derived from arch/i386/mm/ioremap.c .
- *
- *   (C) Copyright 1995 1996 Linus Torvalds
- */
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/sched.h>
-#include <linux/string.h>
-#include <linux/io.h>
-#include <linux/ioport.h>
-#include <linux/bootmem.h>
-#include <linux/proc_fs.h>
-#include <linux/module.h>
-#include <asm/pgalloc.h>
-#include <asm/tlbflush.h>
-
-static void shmedia_mapioaddr(unsigned long, unsigned long);
-static unsigned long shmedia_ioremap(struct resource *, u32, int);
-
-/*
- * Generic mapping function (not visible outside):
- */
-
-/*
- * Remap an arbitrary physical address space into the kernel virtual
- * address space. Needed when the kernel wants to access high addresses
- * directly.
- *
- * NOTE! We need to allow non-page-aligned mappings too: we will obviously
- * have to convert them into an offset in a page-aligned mapping, but the
- * caller shouldn't need to know that small detail.
- */
-void * __ioremap(unsigned long phys_addr, unsigned long size, unsigned long flags)
-{
-	void * addr;
-	struct vm_struct * area;
-	unsigned long offset, last_addr;
-	pgprot_t pgprot;
-
-	/* Don't allow wraparound or zero size */
-	last_addr = phys_addr + size - 1;
-	if (!size || last_addr < phys_addr)
-		return NULL;
-
-	pgprot = __pgprot(_PAGE_PRESENT  | _PAGE_READ   |
-			  _PAGE_WRITE    | _PAGE_DIRTY  |
-			  _PAGE_ACCESSED | _PAGE_SHARED | flags);
-
-	/*
-	 * Mappings have to be page-aligned
-	 */
-	offset = phys_addr & ~PAGE_MASK;
-	phys_addr &= PAGE_MASK;
-	size = PAGE_ALIGN(last_addr + 1) - phys_addr;
-
-	/*
-	 * Ok, go for it..
-	 */
-	area = get_vm_area(size, VM_IOREMAP);
-	pr_debug("Get vm_area returns %p addr %p\n",area,area->addr);
-	if (!area)
-		return NULL;
-	area->phys_addr = phys_addr;
-	addr = area->addr;
-	if (ioremap_page_range((unsigned long)addr, (unsigned long)addr + size,
-			       phys_addr, pgprot)) {
-		vunmap(addr);
-		return NULL;
-	}
-	return (void *) (offset + (char *)addr);
-}
-EXPORT_SYMBOL(__ioremap);
-
-void iounmap(void *addr)
-{
-	struct vm_struct *area;
-
-	vfree((void *) (PAGE_MASK & (unsigned long) addr));
-	area = remove_vm_area((void *) (PAGE_MASK & (unsigned long) addr));
-	if (!area) {
-		printk(KERN_ERR "iounmap: bad address %p\n", addr);
-		return;
-	}
-
-	kfree(area);
-}
-EXPORT_SYMBOL(iounmap);
-
-static struct resource shmedia_iomap = {
-	.name	= "shmedia_iomap",
-	.start	= IOBASE_VADDR + PAGE_SIZE,
-	.end	= IOBASE_END - 1,
-};
-
-static void shmedia_mapioaddr(unsigned long pa, unsigned long va);
-static void shmedia_unmapioaddr(unsigned long vaddr);
-static unsigned long shmedia_ioremap(struct resource *res, u32 pa, int sz);
-
-/*
- * We have the same problem as the SPARC, so lets have the same comment:
- * Our mini-allocator...
- * Boy this is gross! We need it because we must map I/O for
- * timers and interrupt controller before the kmalloc is available.
- */
-
-#define XNMLN  15
-#define XNRES  10
-
-struct xresource {
-	struct resource xres;   /* Must be first */
-	int xflag;              /* 1 == used */
-	char xname[XNMLN+1];
-};
-
-static struct xresource xresv[XNRES];
-
-static struct xresource *xres_alloc(void)
-{
-        struct xresource *xrp;
-        int n;
-
-        xrp = xresv;
-        for (n = 0; n < XNRES; n++) {
-                if (xrp->xflag == 0) {
-                        xrp->xflag = 1;
-                        return xrp;
-                }
-                xrp++;
-        }
-        return NULL;
-}
-
-static void xres_free(struct xresource *xrp)
-{
-	xrp->xflag = 0;
-}
-
-static struct resource *shmedia_find_resource(struct resource *root,
-					      unsigned long vaddr)
-{
-	struct resource *res;
-
-	for (res = root->child; res; res = res->sibling)
-		if (res->start <= vaddr && res->end >= vaddr)
-			return res;
-
-	return NULL;
-}
-
-static unsigned long shmedia_alloc_io(unsigned long phys, unsigned long size,
-				      const char *name)
-{
-        static int printed_full = 0;
-        struct xresource *xres;
-        struct resource *res;
-        char *tack;
-        int tlen;
-
-        if (name == NULL) name = "???";
-
-        if ((xres = xres_alloc()) != 0) {
-                tack = xres->xname;
-                res = &xres->xres;
-        } else {
-                if (!printed_full) {
-                        printk("%s: done with statics, switching to kmalloc\n",
-			       __FUNCTION__);
-                        printed_full = 1;
-                }
-                tlen = strlen(name);
-                tack = kmalloc(sizeof (struct resource) + tlen + 1, GFP_KERNEL);
-                if (!tack)
-			return -ENOMEM;
-                memset(tack, 0, sizeof(struct resource));
-                res = (struct resource *) tack;
-                tack += sizeof (struct resource);
-        }
-
-        strncpy(tack, name, XNMLN);
-        tack[XNMLN] = 0;
-        res->name = tack;
-
-        return shmedia_ioremap(res, phys, size);
-}
-
-static unsigned long shmedia_ioremap(struct resource *res, u32 pa, int sz)
-{
-        unsigned long offset = ((unsigned long) pa) & (~PAGE_MASK);
-	unsigned long round_sz = (offset + sz + PAGE_SIZE-1) & PAGE_MASK;
-        unsigned long va;
-        unsigned int psz;
-
-        if (allocate_resource(&shmedia_iomap, res, round_sz,
-			      shmedia_iomap.start, shmedia_iomap.end,
-			      PAGE_SIZE, NULL, NULL) != 0) {
-                panic("alloc_io_res(%s): cannot occupy\n",
-                    (res->name != NULL)? res->name: "???");
-        }
-
-        va = res->start;
-        pa &= PAGE_MASK;
-
-	psz = (res->end - res->start + (PAGE_SIZE - 1)) / PAGE_SIZE;
-
-	/* log at boot time ... */
-	printk("mapioaddr: %6s  [%2d page%s]  va 0x%08lx   pa 0x%08x\n",
-	       ((res->name != NULL) ? res->name : "???"),
-	       psz, psz == 1 ? " " : "s", va, pa);
-
-        for (psz = res->end - res->start + 1; psz != 0; psz -= PAGE_SIZE) {
-                shmedia_mapioaddr(pa, va);
-                va += PAGE_SIZE;
-                pa += PAGE_SIZE;
-        }
-
-        res->start += offset;
-        res->end = res->start + sz - 1;         /* not strictly necessary.. */
-
-        return res->start;
-}
-
-static void shmedia_free_io(struct resource *res)
-{
-	unsigned long len = res->end - res->start + 1;
-
-	BUG_ON((len & (PAGE_SIZE - 1)) != 0);
-
-	while (len) {
-		len -= PAGE_SIZE;
-		shmedia_unmapioaddr(res->start + len);
-	}
-
-	release_resource(res);
-}
-
-static __init_refok void *sh64_get_page(void)
-{
-	extern int after_bootmem;
-	void *page;
-
-	if (after_bootmem) {
-		page = (void *)get_zeroed_page(GFP_ATOMIC);
-	} else {
-		page = alloc_bootmem_pages(PAGE_SIZE);
-	}
-
-	if (!page || ((unsigned long)page & ~PAGE_MASK))
-		panic("sh64_get_page: Out of memory already?\n");
-
-	return page;
-}
-
-static void shmedia_mapioaddr(unsigned long pa, unsigned long va)
-{
-	pgd_t *pgdp;
-	pmd_t *pmdp;
-	pte_t *ptep, pte;
-	pgprot_t prot;
-	unsigned long flags = 1; /* 1 = CB0-1 device */
-
-	pr_debug("shmedia_mapiopage pa %08lx va %08lx\n",  pa, va);
-
-	pgdp = pgd_offset_k(va);
-	if (pgd_none(*pgdp) || !pgd_present(*pgdp)) {
-		pmdp = (pmd_t *)sh64_get_page();
-		set_pgd(pgdp, __pgd((unsigned long)pmdp | _KERNPG_TABLE));
-	}
-
-	pmdp = pmd_offset(pgdp, va);
-	if (pmd_none(*pmdp) || !pmd_present(*pmdp) ) {
-		ptep = (pte_t *)sh64_get_page();
-		set_pmd(pmdp, __pmd((unsigned long)ptep + _PAGE_TABLE));
-	}
-
-	prot = __pgprot(_PAGE_PRESENT | _PAGE_READ     | _PAGE_WRITE  |
-			_PAGE_DIRTY   | _PAGE_ACCESSED | _PAGE_SHARED | flags);
-
-	pte = pfn_pte(pa >> PAGE_SHIFT, prot);
-	ptep = pte_offset_kernel(pmdp, va);
-
-	if (!pte_none(*ptep) &&
-	    pte_val(*ptep) != pte_val(pte))
-		pte_ERROR(*ptep);
-
-	set_pte(ptep, pte);
-
-	flush_tlb_kernel_range(va, PAGE_SIZE);
-}
-
-static void shmedia_unmapioaddr(unsigned long vaddr)
-{
-	pgd_t *pgdp;
-	pmd_t *pmdp;
-	pte_t *ptep;
-
-	pgdp = pgd_offset_k(vaddr);
-	pmdp = pmd_offset(pgdp, vaddr);
-
-	if (pmd_none(*pmdp) || pmd_bad(*pmdp))
-		return;
-
-	ptep = pte_offset_kernel(pmdp, vaddr);
-
-	if (pte_none(*ptep) || !pte_present(*ptep))
-		return;
-
-	clear_page((void *)ptep);
-	pte_clear(&init_mm, vaddr, ptep);
-}
-
-unsigned long onchip_remap(unsigned long phys, unsigned long size, const char *name)
-{
-	if (size < PAGE_SIZE)
-		size = PAGE_SIZE;
-
-	return shmedia_alloc_io(phys, size, name);
-}
-
-void onchip_unmap(unsigned long vaddr)
-{
-	struct resource *res;
-	unsigned int psz;
-
-	res = shmedia_find_resource(&shmedia_iomap, vaddr);
-	if (!res) {
-		printk(KERN_ERR "%s: Failed to free 0x%08lx\n",
-		       __FUNCTION__, vaddr);
-		return;
-	}
-
-        psz = (res->end - res->start + (PAGE_SIZE - 1)) / PAGE_SIZE;
-
-        printk(KERN_DEBUG "unmapioaddr: %6s  [%2d page%s] freed\n",
-	       res->name, psz, psz == 1 ? " " : "s");
-
-	shmedia_free_io(res);
-
-	if ((char *)res >= (char *)xresv &&
-	    (char *)res <  (char *)&xresv[XNRES]) {
-		xres_free((struct xresource *)res);
-	} else {
-		kfree(res);
-	}
-}
-
-#ifdef CONFIG_PROC_FS
-static int
-ioremap_proc_info(char *buf, char **start, off_t fpos, int length, int *eof,
-		  void *data)
-{
-	char *p = buf, *e = buf + length;
-	struct resource *r;
-	const char *nm;
-
-	for (r = ((struct resource *)data)->child; r != NULL; r = r->sibling) {
-		if (p + 32 >= e)        /* Better than nothing */
-			break;
-		if ((nm = r->name) == 0) nm = "???";
-		p += sprintf(p, "%08lx-%08lx: %s\n",
-			     (unsigned long)r->start,
-			     (unsigned long)r->end, nm);
-	}
-
-	return p-buf;
-}
-#endif /* CONFIG_PROC_FS */
-
-static int __init register_proc_onchip(void)
-{
-#ifdef CONFIG_PROC_FS
-	create_proc_read_entry("io_map",0,0, ioremap_proc_info, &shmedia_iomap);
-#endif
-	return 0;
-}
-
-__initcall(register_proc_onchip);