[SPARC64]: Privatize sun4u_get_pte() and fix name.

__get_phys is only called from init.c as is prom_virt_to_phys(),
__get_iospace() is not called at all, and sun4u_get_pte() is largely
misnamed.

Privatize the implementation and helper functions of
sun4u_get_phys() to mm/init.c, and rename to
kvaddr_to_paddr().

The only used of this thing is flush_icache_range(), and thus
things can be considerably further simplified.  For example,
we should only see module or PAGE_OFFSET kernel addresses here,
so we don't need the OBP firmware range handling at all.

Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c
index 56be943..3cacea5 100644 (file)
--- a/arch/sparc64/mm/init.c
+++ b/arch/sparc64/mm/init.c
@@ -392,6 +392,67 @@ out:
        put_cpu();
 }
 
+struct linux_prom_translation {
+       unsigned long virt;
+       unsigned long size;
+       unsigned long data;
+};
+
+/* Exported for kernel TLB miss handling in ktlb.S */
+struct linux_prom_translation prom_trans[512] __read_mostly;
+unsigned int prom_trans_ents __read_mostly;
+
+/*
+ * Translate PROM's mapping we capture at boot time into physical address.
+ * The second parameter is only set from prom_callback() invocations.
+ */
+static unsigned long prom_virt_to_phys(unsigned long promva)
+{
+       unsigned long mask;
+       int i;
+
+       mask = _PAGE_PADDR_4U;
+       if (tlb_type == hypervisor)
+               mask = _PAGE_PADDR_4V;
+
+       for (i = 0; i < prom_trans_ents; i++) {
+               struct linux_prom_translation *p = &prom_trans[i];
+
+               if (promva >= p->virt &&
+                   promva < (p->virt + p->size)) {
+                       unsigned long base = p->data & mask;
+
+                       return base + (promva & (8192 - 1));
+               }
+       }
+       return 0UL;
+}
+
+static unsigned long kvaddr_to_phys(unsigned long addr)
+{
+       pgd_t *pgdp;
+       pud_t *pudp;
+       pmd_t *pmdp;
+       pte_t *ptep;
+       unsigned long mask = _PAGE_PADDR_4U;
+
+       if (tlb_type == hypervisor)
+               mask = _PAGE_PADDR_4V;
+
+       if (addr >= PAGE_OFFSET)
+               return addr & mask;
+
+       if ((addr >= LOW_OBP_ADDRESS) && (addr < HI_OBP_ADDRESS))
+               return prom_virt_to_phys(addr);
+
+       pgdp = pgd_offset_k(addr);
+       pudp = pud_offset(pgdp, addr);
+       pmdp = pmd_offset(pudp, addr);
+       ptep = pte_offset_kernel(pmdp, addr);
+
+       return pte_val(*ptep) & mask;
+}
+
 void __kprobes flush_icache_range(unsigned long start, unsigned long end)
 {
        /* Cheetah and Hypervisor platform cpus have coherent I-cache. */
@@ -399,7 +460,7 @@ void __kprobes flush_icache_range(unsigned long start, unsigned long end)
                unsigned long kaddr;
 
                for (kaddr = start; kaddr < end; kaddr += PAGE_SIZE)
-                       __flush_icache_page(__get_phys(kaddr));
+                       __flush_icache_page(kvaddr_to_phys(kaddr));
        }
 }
 
@@ -436,16 +497,6 @@ void mmu_info(struct seq_file *m)
 #endif /* CONFIG_DEBUG_DCFLUSH */
 }
 
-struct linux_prom_translation {
-       unsigned long virt;
-       unsigned long size;
-       unsigned long data;
-};
-
-/* Exported for kernel TLB miss handling in ktlb.S */
-struct linux_prom_translation prom_trans[512] __read_mostly;
-unsigned int prom_trans_ents __read_mostly;
-
 /* Exported for SMP bootup purposes. */
 unsigned long kern_locked_tte_data;
 
@@ -1875,62 +1926,6 @@ static unsigned long kern_large_tte(unsigned long paddr)
        return val | paddr;
 }
 
-/*
- * Translate PROM's mapping we capture at boot time into physical address.
- * The second parameter is only set from prom_callback() invocations.
- */
-unsigned long prom_virt_to_phys(unsigned long promva, int *error)
-{
-       unsigned long mask;
-       int i;
-
-       mask = _PAGE_PADDR_4U;
-       if (tlb_type == hypervisor)
-               mask = _PAGE_PADDR_4V;
-
-       for (i = 0; i < prom_trans_ents; i++) {
-               struct linux_prom_translation *p = &prom_trans[i];
-
-               if (promva >= p->virt &&
-                   promva < (p->virt + p->size)) {
-                       unsigned long base = p->data & mask;
-
-                       if (error)
-                               *error = 0;
-                       return base + (promva & (8192 - 1));
-               }
-       }
-       if (error)
-               *error = 1;
-       return 0UL;
-}
-
-/* XXX We should kill off this ugly thing at so me point. XXX */
-unsigned long sun4u_get_pte(unsigned long addr)
-{
-       pgd_t *pgdp;
-       pud_t *pudp;
-       pmd_t *pmdp;
-       pte_t *ptep;
-       unsigned long mask = _PAGE_PADDR_4U;
-
-       if (tlb_type == hypervisor)
-               mask = _PAGE_PADDR_4V;
-
-       if (addr >= PAGE_OFFSET)
-               return addr & mask;
-
-       if ((addr >= LOW_OBP_ADDRESS) && (addr < HI_OBP_ADDRESS))
-               return prom_virt_to_phys(addr, NULL);
-
-       pgdp = pgd_offset_k(addr);
-       pudp = pud_offset(pgdp, addr);
-       pmdp = pmd_offset(pudp, addr);
-       ptep = pte_offset_kernel(pmdp, addr);
-
-       return pte_val(*ptep) & mask;
-}
-
 /* If not locked, zap it. */
 void __flush_tlb_all(void)
 {

diff --git a/include/asm-sparc64/pgtable.h b/include/asm-sparc64/pgtable.h
index b12be7a..fd46dd6 100644 (file)
--- a/include/asm-sparc64/pgtable.h
+++ b/include/asm-sparc64/pgtable.h
@@ -737,20 +737,6 @@ extern unsigned long pte_file(pte_t);
 extern pte_t pgoff_to_pte(unsigned long);
 #define PTE_FILE_MAX_BITS      (64UL - PAGE_SHIFT - 1UL)
 
-extern unsigned long prom_virt_to_phys(unsigned long, int *);
-
-extern unsigned long sun4u_get_pte(unsigned long);
-
-static inline unsigned long __get_phys(unsigned long addr)
-{
-       return sun4u_get_pte(addr);
-}
-
-static inline int __get_iospace(unsigned long addr)
-{
-       return ((sun4u_get_pte(addr) & 0xf0000000) >> 28);
-}
-
 extern unsigned long *sparc64_valid_addr_bitmap;
 
 /* Needs to be defined here and not in linux/mm.h, as it is arch dependent */