access_process_vm device memory infrastructure

[pandora-kernel.git] / arch / x86 / mm / ioremap.c

diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index 115f13e..016f335 100644 (file)
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -12,6 +12,7 @@
 #include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/vmalloc.h>
+#include <linux/mmiotrace.h>
 
 #include <asm/cacheflush.h>
 #include <asm/e820.h>
@@ -122,10 +123,13 @@ static void __iomem *__ioremap_caller(resource_size_t phys_addr,
 {
        unsigned long pfn, offset, vaddr;
        resource_size_t last_addr;
+       const resource_size_t unaligned_phys_addr = phys_addr;
+       const unsigned long unaligned_size = size;
        struct vm_struct *area;
        unsigned long new_prot_val;
        pgprot_t prot;
        int retval;
+       void __iomem *ret_addr;
 
        /* Don't allow wraparound or zero size */
        last_addr = phys_addr + size - 1;
@@ -233,7 +237,10 @@ static void __iomem *__ioremap_caller(resource_size_t phys_addr,
                return NULL;
        }
 
-       return (void __iomem *) (vaddr + offset);
+       ret_addr = (void __iomem *) (vaddr + offset);
+       mmiotrace_ioremap(unaligned_phys_addr, unaligned_size, ret_addr);
+
+       return ret_addr;
 }
 
 /**
@@ -323,6 +330,14 @@ static void __iomem *ioremap_default(resource_size_t phys_addr,
        return (void __iomem *)ret;
 }
 
+void __iomem *ioremap_prot(resource_size_t phys_addr, unsigned long size,
+                               unsigned long prot_val)
+{
+       return __ioremap_caller(phys_addr, size, (prot_val & _PAGE_CACHE_MASK),
+                               __builtin_return_address(0));
+}
+EXPORT_SYMBOL(ioremap_prot);
+
 /**
  * iounmap - Free a IO remapping
  * @addr: virtual address from ioremap_*
@@ -348,6 +363,8 @@ void iounmap(volatile void __iomem *addr)
        addr = (volatile void __iomem *)
                (PAGE_MASK & (unsigned long __force)addr);
 
+       mmiotrace_iounmap(addr);
+
        /* Use the vm area unlocked, assuming the caller
           ensures there isn't another iounmap for the same address
           in parallel. Reuse of the virtual address is prevented by