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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-06-10 05:30:17 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-06-10 05:30:17 -0300
commitd635711daa98be86d4c7fd01499c34f566b54ccb (patch)
treeaa5cc3760a27c3d57146498cb82fa549547de06c /arch/powerpc/mm/pgtable_32.c
parentc91265cd0efb83778f015b4d4b1129bd2cfd075e (diff)
Linux-libre 4.6.2-gnu
Diffstat (limited to 'arch/powerpc/mm/pgtable_32.c')
-rw-r--r--arch/powerpc/mm/pgtable_32.c52
1 files changed, 10 insertions, 42 deletions
diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c
index 7692d1bb1..bf7bf32b5 100644
--- a/arch/powerpc/mm/pgtable_32.c
+++ b/arch/powerpc/mm/pgtable_32.c
@@ -37,35 +37,10 @@
#include "mmu_decl.h"
-unsigned long ioremap_base;
unsigned long ioremap_bot;
EXPORT_SYMBOL(ioremap_bot); /* aka VMALLOC_END */
-#ifdef CONFIG_6xx
-#define HAVE_BATS 1
-#endif
-
-#if defined(CONFIG_FSL_BOOKE)
-#define HAVE_TLBCAM 1
-#endif
-
-extern char etext[], _stext[];
-
-#ifdef HAVE_BATS
-extern phys_addr_t v_mapped_by_bats(unsigned long va);
-extern unsigned long p_mapped_by_bats(phys_addr_t pa);
-#else /* !HAVE_BATS */
-#define v_mapped_by_bats(x) (0UL)
-#define p_mapped_by_bats(x) (0UL)
-#endif /* HAVE_BATS */
-
-#ifdef HAVE_TLBCAM
-extern phys_addr_t v_mapped_by_tlbcam(unsigned long va);
-extern unsigned long p_mapped_by_tlbcam(phys_addr_t pa);
-#else /* !HAVE_TLBCAM */
-#define v_mapped_by_tlbcam(x) (0UL)
-#define p_mapped_by_tlbcam(x) (0UL)
-#endif /* HAVE_TLBCAM */
+extern char etext[], _stext[], _sinittext[], _einittext[];
#define PGDIR_ORDER (32 + PGD_T_LOG2 - PGDIR_SHIFT)
@@ -197,7 +172,7 @@ __ioremap_caller(phys_addr_t addr, unsigned long size, unsigned long flags,
/*
* Choose an address to map it to.
* Once the vmalloc system is running, we use it.
- * Before then, we use space going down from ioremap_base
+ * Before then, we use space going down from IOREMAP_TOP
* (ioremap_bot records where we're up to).
*/
p = addr & PAGE_MASK;
@@ -228,19 +203,10 @@ __ioremap_caller(phys_addr_t addr, unsigned long size, unsigned long flags,
/*
* Is it already mapped? Perhaps overlapped by a previous
- * BAT mapping. If the whole area is mapped then we're done,
- * otherwise remap it since we want to keep the virt addrs for
- * each request contiguous.
- *
- * We make the assumption here that if the bottom and top
- * of the range we want are mapped then it's mapped to the
- * same virt address (and this is contiguous).
- * -- Cort
+ * mapping.
*/
- if ((v = p_mapped_by_bats(p)) /*&& p_mapped_by_bats(p+size-1)*/ )
- goto out;
-
- if ((v = p_mapped_by_tlbcam(p)))
+ v = p_block_mapped(p);
+ if (v)
goto out;
if (slab_is_available()) {
@@ -278,7 +244,8 @@ void iounmap(volatile void __iomem *addr)
* If mapped by BATs then there is nothing to do.
* Calling vfree() generates a benign warning.
*/
- if (v_mapped_by_bats((unsigned long)addr)) return;
+ if (v_block_mapped((unsigned long)addr))
+ return;
if (addr > high_memory && (unsigned long) addr < ioremap_bot)
vunmap((void *) (PAGE_MASK & (unsigned long)addr));
@@ -322,7 +289,8 @@ void __init __mapin_ram_chunk(unsigned long offset, unsigned long top)
v = PAGE_OFFSET + s;
p = memstart_addr + s;
for (; s < top; s += PAGE_SIZE) {
- ktext = ((char *) v >= _stext && (char *) v < etext);
+ ktext = ((char *)v >= _stext && (char *)v < etext) ||
+ ((char *)v >= _sinittext && (char *)v < _einittext);
f = ktext ? pgprot_val(PAGE_KERNEL_TEXT) : pgprot_val(PAGE_KERNEL);
map_page(v, p, f);
#ifdef CONFIG_PPC_STD_MMU_32
@@ -403,7 +371,7 @@ static int __change_page_attr(struct page *page, pgprot_t prot)
BUG_ON(PageHighMem(page));
address = (unsigned long)page_address(page);
- if (v_mapped_by_bats(address) || v_mapped_by_tlbcam(address))
+ if (v_block_mapped(address))
return 0;
if (!get_pteptr(&init_mm, address, &kpte, &kpmd))
return -EINVAL;