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;
void (*destructor)(MemoryRegion *mr);
ram_addr_t ram_addr;
- IORange iorange;
bool subpage;
bool terminates;
bool readable;
bool enabled;
bool rom_device;
bool warning_printed; /* For reservations */
+ bool flush_coalesced_mmio;
MemoryRegion *alias;
target_phys_addr_t alias_offset;
unsigned priority;
#define PORTIO_END_OF_LIST() { }
+typedef struct AddressSpace AddressSpace;
+
+/**
+ * AddressSpace: describes a mapping of addresses to #MemoryRegion objects
+ */
+struct AddressSpace {
+ /* All fields are private. */
+ const char *name;
+ MemoryRegion *root;
+ struct FlatView *current_map;
+ int ioeventfd_nb;
+ struct MemoryRegionIoeventfd *ioeventfds;
+ QTAILQ_ENTRY(AddressSpace) address_spaces_link;
+};
+
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;
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, EventNotifier *e);
+ void (*eventfd_del)(MemoryListener *listener, MemoryRegionSection *section,
+ bool match_data, uint64_t data, EventNotifier *e);
+ void (*coalesced_mmio_add)(MemoryListener *listener, MemoryRegionSection *section,
+ target_phys_addr_t addr, target_phys_addr_t len);
+ void (*coalesced_mmio_del)(MemoryListener *listener, MemoryRegionSection *section,
+ target_phys_addr_t addr, target_phys_addr_t len);
+ /* Lower = earlier (during add), later (during del) */
+ unsigned priority;
+ MemoryRegion *address_space_filter;
+ QTAILQ_ENTRY(MemoryListener) link;
};
/**
uint64_t size);
/**
- * memory_region_init_ram: Initialize RAM memory region from a user-provided.
- * pointer. Accesses into the region will modify
- * memory directly.
+ * memory_region_init_ram_ptr: Initialize RAM memory region from a
+ * user-provided pointer. Accesses into the
+ * region will modify memory directly.
*
* @mr: the #MemoryRegion to be initialized.
* @name: the name of the region.
*/
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_clear_coalescing(MemoryRegion *mr);
+/**
+ * memory_region_set_flush_coalesced: Enforce memory coalescing flush before
+ * accesses.
+ *
+ * Ensure that pending coalesced MMIO request are flushed before the memory
+ * region is accessed. This property is automatically enabled for all regions
+ * passed to memory_region_set_coalescing() and memory_region_add_coalescing().
+ *
+ * @mr: the memory region to be updated.
+ */
+void memory_region_set_flush_coalesced(MemoryRegion *mr);
+
+/**
+ * memory_region_clear_flush_coalesced: Disable memory coalescing flush before
+ * accesses.
+ *
+ * Clear the automatic coalesced MMIO flushing enabled via
+ * memory_region_set_flush_coalesced. Note that this service has no effect on
+ * memory regions that have MMIO coalescing enabled for themselves. For them,
+ * automatic flushing will stop once coalescing is disabled.
+ *
+ * @mr: the memory region to be updated.
+ */
+void memory_region_clear_flush_coalesced(MemoryRegion *mr);
+
/**
* memory_region_add_eventfd: Request an eventfd to be triggered when a word
* is written to a location.
unsigned size,
bool match_data,
uint64_t data,
- int fd);
+ EventNotifier *e);
/**
* memory_region_del_eventfd: Cancel an eventfd.
unsigned size,
bool match_data,
uint64_t data,
- int fd);
+ EventNotifier *e);
+
/**
* memory_region_add_subregion: Add a subregion to a container.
*
target_phys_addr_t offset,
MemoryRegion *subregion);
/**
- * memory_region_add_subregion: Add a subregion to a container, with overlap.
+ * memory_region_add_subregion_overlap: Add a subregion to a container
+ * with overlap.
*
* Adds a subregion at @offset. The subregion may overlap with other
* subregions. Conflicts are resolved by having a higher @priority hide a
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
* 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()
void memory_global_dirty_log_start(void);
/**
- * memory_global_dirty_log_stop: begin dirty logging for all regions
+ * memory_global_dirty_log_stop: end dirty logging for all regions
*/
void memory_global_dirty_log_stop(void);
void mtree_info(fprintf_function mon_printf, void *f);
+/**
+ * address_space_init: initializes an address space
+ *
+ * @as: an uninitialized #AddressSpace
+ * @root: a #MemoryRegion that routes addesses for the address space
+ */
+void address_space_init(AddressSpace *as, MemoryRegion *root);
+
#endif
#endif
projects / qemu.git / blobdiff