[POWERPC] Abolish iopa(), mm_ptov(), io_block_mapping() from arch/powerpc

These old-fashioned IO mapping functions no longer have any callers in
code which remains relevant on arch/powerpc.  Therefore, this removes
them from arch/powerpc.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 0 insertions, 118 deletions

diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c
index f6ae1a57d652..62680b0f7204 100644
--- a/arch/powerpc/mm/pgtable_32.c
+++ b/arch/powerpc/mm/pgtable_32.c
@@ -303,48 +303,6 @@ void __init mapin_ram(void)
 /* is x a power of 4? */
 #define is_power_of_4(x)        is_power_of_2(x) && (ffs(x) & 1)
 
-/*
- * Set up a mapping for a block of I/O.
- * virt, phys, size must all be page-aligned.
- * This should only be called before ioremap is called.
- */
-void __init io_block_mapping(unsigned long virt, phys_addr_t phys,
-                             unsigned int size, int flags)
-{
-        int i;
-
-        if (virt > KERNELBASE && virt < ioremap_bot)
-                ioremap_bot = ioremap_base = virt;
-
-#ifdef HAVE_BATS
-        /*
-         * Use a BAT for this if possible...
-         */
-        if (io_bat_index < 2 && is_power_of_2(size)
-            && (virt & (size - 1)) == 0 && (phys & (size - 1)) == 0) {
-                setbat(io_bat_index, virt, phys, size, flags);
-                ++io_bat_index;
-                return;
-        }
-#endif /* HAVE_BATS */
-
-#ifdef HAVE_TLBCAM
-        /*
-         * Use a CAM for this if possible...
-         */
-        if (tlbcam_index < num_tlbcam_entries && is_power_of_4(size)
-            && (virt & (size - 1)) == 0 && (phys & (size - 1)) == 0) {
-                settlbcam(tlbcam_index, virt, phys, size, flags, 0);
-                ++tlbcam_index;
-                return;
-        }
-#endif /* HAVE_TLBCAM */
-
-        /* No BATs available, put it in the page tables. */
-        for (i = 0; i < size; i += PAGE_SIZE)
-                map_page(virt + i, phys + i, flags);
-}
-
 /* Scan the real Linux page tables and return a PTE pointer for
  * a virtual address in a context.
  * Returns true (1) if PTE was found, zero otherwise.  The pointer to
@@ -379,82 +337,6 @@ get_pteptr(struct mm_struct *mm, unsigned long addr, pte_t **ptep, pmd_t **pmdp)
         return(retval);
 }
 
-/* Find physical address for this virtual address.  Normally used by
- * I/O functions, but anyone can call it.
- */
-unsigned long iopa(unsigned long addr)
-{
-        unsigned long pa;
-
-        /* I don't know why this won't work on PMacs or CHRP.  It
-         * appears there is some bug, or there is some implicit
-         * mapping done not properly represented by BATs or in page
-         * tables.......I am actively working on resolving this, but
-         * can't hold up other stuff.  -- Dan
-         */
-        pte_t *pte;
-        struct mm_struct *mm;
-
-        /* Check the BATs */
-        pa = v_mapped_by_bats(addr);
-        if (pa)
-                return pa;
-
-        /* Allow mapping of user addresses (within the thread)
-         * for DMA if necessary.
-         */
-        if (addr < TASK_SIZE)
-                mm = current->mm;
-        else
-                mm = &init_mm;
-
-        pa = 0;
-        if (get_pteptr(mm, addr, &pte, NULL)) {
-                pa = (pte_val(*pte) & PAGE_MASK) | (addr & ~PAGE_MASK);
-                pte_unmap(pte);
-        }
-
-        return(pa);
-}
-
-/* This is will find the virtual address for a physical one....
- * Swiped from APUS, could be dangerous :-).
- * This is only a placeholder until I really find a way to make this
- * work.  -- Dan
- */
-unsigned long
-mm_ptov (unsigned long paddr)
-{
-        unsigned long ret;
-#if 0
-        if (paddr < 16*1024*1024)
-                ret = ZTWO_VADDR(paddr);
-        else {
-                int i;
-
-                for (i = 0; i < kmap_chunk_count;){
-                        unsigned long phys = kmap_chunks[i++];
-                        unsigned long size = kmap_chunks[i++];
-                        unsigned long virt = kmap_chunks[i++];
-                        if (paddr >= phys
-                            && paddr < (phys + size)){
-                                ret = virt + paddr - phys;
-                                goto exit;
-                        }
-                }
-        
-                ret = (unsigned long) __va(paddr);
-        }
-exit:
-#ifdef DEBUGPV
-        printk ("PTOV(%lx)=%lx\n", paddr, ret);
-#endif
-#else
-        ret = (unsigned long)paddr + KERNELBASE;
-#endif
-        return ret;
-}
-
 #ifdef CONFIG_DEBUG_PAGEALLOC
 
 static int __change_page_attr(struct page *page, pgprot_t prot)