===================================================================
@@ -285,6 +285,22 @@ acpi_map_vaddr_lookup(acpi_physical_addr
return NULL;
}
+void __iomem *acpi_os_get_iomem(acpi_physical_address phys, unsigned int size)
+{
+ struct acpi_ioremap *map;
+ void __iomem *virt = NULL;
+
+ mutex_lock(&acpi_ioremap_lock);
+ map = acpi_map_lookup(phys, size);
+ if (map) {
+ virt = map->virt + (phys - map->phys);
+ map->refcount++;
+ }
+ mutex_unlock(&acpi_ioremap_lock);
+ return virt;
+}
+EXPORT_SYMBOL_GPL(acpi_os_get_iomem);
+
/* Must be called with 'acpi_ioremap_lock' or RCU read lock held. */
static struct acpi_ioremap *
acpi_map_lookup_virt(void __iomem *virt, acpi_size size)
===================================================================
@@ -10,4 +10,6 @@ static inline void __iomem *acpi_os_iore
return ioremap_cache(phys, size);
}
+void __iomem *acpi_os_get_iomem(acpi_physical_address phys, unsigned int size);
+
#endif