sh: ioremap() overhaul.

ioremap() overhaul. Add support for transparent PMB mapping, get rid of
p3_ioremap(), etc. Also drop ioremap() and iounmap() routines from the
machvec, as everyone can use the generic ioremap() API instead. For PCI
memory apertures and other special cases, use the pci_iomap() API, as
boards are already required to get the mapping right there.

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

1 files changed, 10 insertions, 1 deletions

diff --git a/include/asm-sh/mmu.h b/include/asm-sh/mmu.h
index 91c884634276..ec09589fa6ca 100644
--- a/include/asm-sh/mmu.h
+++ b/include/asm-sh/mmu.h
@@ -50,6 +50,8 @@ typedef unsigned long mm_context_t;
 
 #define PMB_NO_ENTRY            (-1)
 
+struct pmb_entry;
+
 struct pmb_entry {
         unsigned long vpn;
         unsigned long ppn;
@@ -60,16 +62,23 @@ struct pmb_entry {
          * PMB_NO_ENTRY to search for a free one
          */
         int entry;
+
+        struct pmb_entry *next;
+        /* Adjacent entry link for contiguous multi-entry mappings */
+        struct pmb_entry *link;
 };
 
 /* arch/sh/mm/pmb.c */
 int __set_pmb_entry(unsigned long vpn, unsigned long ppn,
                     unsigned long flags, int *entry);
-void set_pmb_entry(struct pmb_entry *pmbe);
+int set_pmb_entry(struct pmb_entry *pmbe);
 void clear_pmb_entry(struct pmb_entry *pmbe);
 struct pmb_entry *pmb_alloc(unsigned long vpn, unsigned long ppn,
                             unsigned long flags);
 void pmb_free(struct pmb_entry *pmbe);
+long pmb_remap(unsigned long virt, unsigned long phys,
+               unsigned long size, unsigned long flags);
+void pmb_unmap(unsigned long addr);
 
 #endif /* __MMU_H */