qapi schema: add Netdev types

[qemu.git] / memory.h

diff --git a/memory.h b/memory.h
index fa45b991359b55d9fb17e78683c199fbb45a9ea8..bd1bbaeabed6a435a3a7e733f222b952123299ea 100644 (file)
--- a/memory.h
+++ b/memory.h
@@ -43,6 +43,14 @@ struct MemoryRegionMmio {
     CPUWriteMemoryFunc *write[3];
 };
 
+/* Internal use; thunks between old-style IORange and MemoryRegions. */
+typedef struct MemoryRegionIORange MemoryRegionIORange;
+struct MemoryRegionIORange {
+    IORange iorange;
+    MemoryRegion *mr;
+    target_phys_addr_t offset;
+};
+
 /*
  * Memory region callbacks
  */
@@ -115,10 +123,8 @@ struct MemoryRegion {
     MemoryRegion *parent;
     Int128 size;
     target_phys_addr_t addr;
-    target_phys_addr_t offset;
     void (*destructor)(MemoryRegion *mr);
     ram_addr_t ram_addr;
-    IORange iorange;
     bool subpage;
     bool terminates;
     bool readable;
@@ -161,6 +167,7 @@ typedef struct MemoryRegionSection MemoryRegionSection;
  * @size: the size of the section; will not exceed @mr's boundaries
  * @offset_within_address_space: the address of the first byte of the section
  *     relative to the region's address space
+ * @readonly: writes to this section are ignored
  */
 struct MemoryRegionSection {
     MemoryRegion *mr;
@@ -168,6 +175,7 @@ struct MemoryRegionSection {
     target_phys_addr_t offset_within_region;
     uint64_t size;
     target_phys_addr_t offset_within_address_space;
+    bool readonly;
 };
 
 typedef struct MemoryListener MemoryListener;
@@ -179,14 +187,24 @@ typedef struct MemoryListener MemoryListener;
  * Use with memory_listener_register() and memory_listener_unregister().
  */
 struct MemoryListener {
+    void (*begin)(MemoryListener *listener);
+    void (*commit)(MemoryListener *listener);
     void (*region_add)(MemoryListener *listener, MemoryRegionSection *section);
     void (*region_del)(MemoryListener *listener, MemoryRegionSection *section);
+    void (*region_nop)(MemoryListener *listener, MemoryRegionSection *section);
     void (*log_start)(MemoryListener *listener, MemoryRegionSection *section);
     void (*log_stop)(MemoryListener *listener, MemoryRegionSection *section);
     void (*log_sync)(MemoryListener *listener, MemoryRegionSection *section);
     void (*log_global_start)(MemoryListener *listener);
     void (*log_global_stop)(MemoryListener *listener);
-    QLIST_ENTRY(MemoryListener) link;
+    void (*eventfd_add)(MemoryListener *listener, MemoryRegionSection *section,
+                        bool match_data, uint64_t data, EventNotifier *e);
+    void (*eventfd_del)(MemoryListener *listener, MemoryRegionSection *section,
+                        bool match_data, uint64_t data, EventNotifier *e);
+    /* Lower = earlier (during add), later (during del) */
+    unsigned priority;
+    MemoryRegion *address_space_filter;
+    QTAILQ_ENTRY(MemoryListener) link;
 };
 
 /**
@@ -320,6 +338,19 @@ uint64_t memory_region_size(MemoryRegion *mr);
  */
 bool memory_region_is_ram(MemoryRegion *mr);
 
+/**
+ * memory_region_is_romd: check whether a memory region is ROMD
+ *
+ * Returns %true is a memory region is ROMD and currently set to allow
+ * direct reads.
+ *
+ * @mr: the memory region being queried
+ */
+static inline bool memory_region_is_romd(MemoryRegion *mr)
+{
+    return mr->rom_device && mr->readable;
+}
+
 /**
  * memory_region_name: get a memory region's name
  *
@@ -358,14 +389,6 @@ bool memory_region_is_rom(MemoryRegion *mr);
  */
 void *memory_region_get_ram_ptr(MemoryRegion *mr);
 
-/**
- * memory_region_set_offset: Sets an offset to be added to MemoryRegionOps
- *                           callbacks.
- *
- * This function is deprecated and should not be used in new code.
- */
-void memory_region_set_offset(MemoryRegion *mr, target_phys_addr_t offset);
-
 /**
  * memory_region_set_log: Turn dirty logging on or off for a region.
  *
@@ -380,20 +403,21 @@ void memory_region_set_offset(MemoryRegion *mr, target_phys_addr_t offset);
 void memory_region_set_log(MemoryRegion *mr, bool log, unsigned client);
 
 /**
- * memory_region_get_dirty: Check whether a page is dirty for a specified
- *                          client.
+ * memory_region_get_dirty: Check whether a range of bytes is dirty
+ *                          for a specified client.
  *
- * Checks whether a page has been written to since the last
+ * Checks whether a range of bytes has been written to since the last
  * call to memory_region_reset_dirty() with the same @client.  Dirty logging
  * must be enabled.
  *
  * @mr: the memory region being queried.
  * @addr: the address (relative to the start of the region) being queried.
+ * @size: the size of the range being queried.
  * @client: the user of the logging information; %DIRTY_MEMORY_MIGRATION or
  *          %DIRTY_MEMORY_VGA.
  */
 bool memory_region_get_dirty(MemoryRegion *mr, target_phys_addr_t addr,
-                             unsigned client);
+                             target_phys_addr_t size, unsigned client);
 
 /**
  * memory_region_set_dirty: Mark a range of bytes as dirty in a memory region.
@@ -517,7 +541,7 @@ void memory_region_add_eventfd(MemoryRegion *mr,
                                unsigned size,
                                bool match_data,
                                uint64_t data,
-                               int fd);
+                               EventNotifier *e);
 
 /**
  * memory_region_del_eventfd: Cancel an eventfd.
@@ -537,7 +561,8 @@ void memory_region_del_eventfd(MemoryRegion *mr,
                                unsigned size,
                                bool match_data,
                                uint64_t data,
-                               int fd);
+                               EventNotifier *e);
+
 /**
  * memory_region_add_subregion: Add a subregion to a container.
  *
@@ -655,6 +680,22 @@ void memory_region_set_alias_offset(MemoryRegion *mr,
 MemoryRegionSection memory_region_find(MemoryRegion *address_space,
                                        target_phys_addr_t addr, uint64_t size);
 
+/**
+ * memory_region_section_addr: get offset within MemoryRegionSection
+ *
+ * Returns offset within MemoryRegionSection
+ *
+ * @section: the memory region section being queried
+ * @addr: address in address space
+ */
+static inline target_phys_addr_t
+memory_region_section_addr(MemoryRegionSection *section,
+                           target_phys_addr_t addr)
+{
+    addr -= section->offset_within_address_space;
+    addr += section->offset_within_region;
+    return addr;
+}
 
 /**
  * memory_global_sync_dirty_bitmap: synchronize the dirty log for all memory
@@ -685,8 +726,9 @@ void memory_region_transaction_commit(void);
  *                           space
  *
  * @listener: an object containing the callbacks to be called
+ * @filter: if non-%NULL, only regions in this address space will be observed
  */
-void memory_listener_register(MemoryListener *listener);
+void memory_listener_register(MemoryListener *listener, MemoryRegion *filter);
 
 /**
  * memory_listener_unregister: undo the effect of memory_listener_register()