char: rename qemu_chr_read() -> qemu_chr_be_write()

[qemu.git] / memory.h

diff --git a/memory.h b/memory.h
index c280a39d2cf8c93cde31f84665ed69e808fd7fe8..0553cc7526e47eac69eeac79558ffa59a1d42156 100644 (file)
--- a/memory.h
+++ b/memory.h
@@ -109,9 +109,11 @@ struct MemoryRegion {
     target_phys_addr_t addr;
     target_phys_addr_t offset;
     bool backend_registered;
+    void (*destructor)(MemoryRegion *mr);
     ram_addr_t ram_addr;
     IORange iorange;
     bool terminates;
+    bool readable;
     MemoryRegion *alias;
     target_phys_addr_t alias_offset;
     unsigned priority;
@@ -133,7 +135,7 @@ struct MemoryRegionPortio {
     IOPortWriteFunc *write;
 };
 
-#define PORTIO_END { }
+#define PORTIO_END_OF_LIST() { }
 
 /**
  * memory_region_init: Initialize a memory region
@@ -218,6 +220,25 @@ void memory_region_init_alias(MemoryRegion *mr,
                               MemoryRegion *orig,
                               target_phys_addr_t offset,
                               uint64_t size);
+
+/**
+ * memory_region_init_rom_device:  Initialize a ROM memory region.  Writes are
+ *                                 handled via callbacks.
+ *
+ * @mr: the #MemoryRegion to be initialized.
+ * @ops: callbacks for write access handling.
+ * @dev: a device associated with the region; may be %NULL.
+ * @name: the name of the region; the pair (@dev, @name) must be globally
+ *        unique.  The name is part of the save/restore ABI and so cannot be
+ *        changed.
+ * @size: size of the region.
+ */
+void memory_region_init_rom_device(MemoryRegion *mr,
+                                   const MemoryRegionOps *ops,
+                                   DeviceState *dev, /* FIXME: layering violation */
+                                   const char *name,
+                                   uint64_t size);
+
 /**
  * memory_region_destroy: Destroy a memory region and relaim all resources.
  *
@@ -329,6 +350,20 @@ void memory_region_reset_dirty(MemoryRegion *mr, target_phys_addr_t addr,
  */
 void memory_region_set_readonly(MemoryRegion *mr, bool readonly);
 
+/**
+ * memory_region_rom_device_set_readable: enable/disable ROM readability
+ *
+ * Allows a ROM device (initialized with memory_region_init_rom_device() to
+ * to be marked as readable (default) or not readable.  When it is readable,
+ * the device is mapped to guest memory.  When not readable, reads are
+ * forwarded to the #MemoryRegion.read function.
+ *
+ * @mr: the memory region to be updated
+ * @readable: whether reads are satisified directly (%true) or via callbacks
+ *            (%false)
+ */
+void memory_region_rom_device_set_readable(MemoryRegion *mr, bool readable);
+
 /**
  * memory_region_set_coalescing: Enable memory coalescing for the region.
  *
@@ -456,6 +491,14 @@ void memory_region_add_subregion_overlap(MemoryRegion *mr,
 void memory_region_del_subregion(MemoryRegion *mr,
                                  MemoryRegion *subregion);
 
+/* Start a transaction; changes will be accumulated and made visible only
+ * when the transaction ends.
+ */
+void memory_region_transaction_begin(void);
+/* Commit a transaction and make changes visible to the guest.
+ */
+void memory_region_transaction_commit(void);
+
 #endif
 
 #endif