[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>

diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c
index f6ae1a57d652999c679545ae21fd5b6499cfae58..62680b0f72046e8cf4bd050aed97dcd1c3c96eec 100644 (file)
--- 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)

diff --git a/include/asm-powerpc/io.h b/include/asm-powerpc/io.h
index 17efea5b594c3e046575ec0c0be1611f0b124f03..bb8d965f96c6bc42969c51009fe38ba7f12b371d 100644 (file)
--- a/include/asm-powerpc/io.h
+++ b/include/asm-powerpc/io.h
@@ -633,13 +633,6 @@ extern void __iomem * __ioremap_at(phys_addr_t pa, void *ea,
                                   unsigned long size, unsigned long flags);
 extern void __iounmap_at(void *ea, unsigned long size);
 
-/* Those are more 32 bits only functions */
-extern unsigned long iopa(unsigned long addr);
-extern unsigned long mm_ptov(unsigned long addr) __attribute_const__;
-extern void io_block_mapping(unsigned long virt, phys_addr_t phys,
-                            unsigned int size, int flags);
-
-
 /*
  * When CONFIG_PPC_INDIRECT_IO is set, we use the generic iomap implementation
  * which needs some additional definitions here. They basically allow PIO

diff --git a/include/asm-powerpc/pgtable-ppc32.h b/include/asm-powerpc/pgtable-ppc32.h
index c863bdb2889c11fae3879c38be57aef299ef9fbd..c18ac821ce44033af435f0283ba2734f95dfd7e2 100644 (file)
--- a/include/asm-powerpc/pgtable-ppc32.h
+++ b/include/asm-powerpc/pgtable-ppc32.h
@@ -756,8 +756,6 @@ extern void paging_init(void);
 extern void cache_clear(__u32 addr, int length);
 extern void cache_push(__u32 addr, int length);
 extern int mm_end_of_chunk (unsigned long addr, int len);
-extern unsigned long iopa(unsigned long addr);
-extern unsigned long mm_ptov(unsigned long addr) __attribute_const__;
 
 /* Values for nocacheflag and cmode */
 /* These are not used by the APUS kernel_map, but prevents