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
*/
MemoryRegion *parent;
Int128 size;
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 subpage;
bool terminates;
bool readable;
bool ram;
bool readonly; /* For RAM regions */
bool enabled;
+ bool rom_device;
+ bool warning_printed; /* For reservations */
MemoryRegion *alias;
target_phys_addr_t alias_offset;
unsigned priority;
* @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;
target_phys_addr_t offset_within_region;
uint64_t size;
target_phys_addr_t offset_within_address_space;
+ bool readonly;
};
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, int fd);
+ void (*eventfd_del)(MemoryListener *listener, MemoryRegionSection *section,
+ bool match_data, uint64_t data, int fd);
+ /* Lower = earlier (during add), later (during del) */
+ unsigned priority;
+ MemoryRegion *address_space_filter;
+ QTAILQ_ENTRY(MemoryListener) link;
};
/**
const char *name,
uint64_t size);
+/**
+ * memory_region_init_reservation: Initialize a memory region that reserves
+ * I/O space.
+ *
+ * A reservation region primariy serves debugging purposes. It claims I/O
+ * space that is not supposed to be handled by QEMU itself. Any access via
+ * the memory API will cause an abort().
+ *
+ * @mr: the #MemoryRegion to be initialized
+ * @name: used for debugging; not visible to the user or ABI
+ * @size: size of the region.
+ */
+void memory_region_init_reservation(MemoryRegion *mr,
+ const char *name,
+ uint64_t size);
/**
* memory_region_destroy: Destroy a memory region and reclaim all resources.
*
*/
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
*
*/
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.
*
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 page as dirty in a memory region.
+ * memory_region_set_dirty: Mark a range of bytes as dirty in a memory region.
*
- * Marks a page as dirty, after it has been dirtied outside guest code.
+ * Marks a range of bytes as dirty, after it has been dirtied outside
+ * guest code.
*
- * @mr: the memory region being queried.
+ * @mr: the memory region being dirtied.
* @addr: the address (relative to the start of the region) being dirtied.
+ * @size: size of the range being dirtied.
*/
-void memory_region_set_dirty(MemoryRegion *mr, target_phys_addr_t addr);
+void memory_region_set_dirty(MemoryRegion *mr, target_phys_addr_t addr,
+ target_phys_addr_t size);
/**
* memory_region_sync_dirty_bitmap: Synchronize a region's dirty bitmap with
* memory_region_get_ram_addr: Get the ram address associated with a memory
* region
*
- * DO NOT USE THIS FUCNTION. This is a temporary workaround while the Xen
+ * DO NOT USE THIS FUNCTION. This is a temporary workaround while the Xen
* code is being reworked.
*/
ram_addr_t memory_region_get_ram_addr(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
* memory_region_transaction_begin: Start a transaction.
*
* During a transaction, changes will be accumulated and made visible
- * only when the transaction ends (is commited).
+ * only when the transaction ends (is committed).
*/
void memory_region_transaction_begin(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()
projects / qemu.git / blobdiff