bool ram;
bool subpage;
bool readonly; /* For RAM regions */
+ bool nonvolatile;
bool rom_device;
bool flush_coalesced_mmio;
bool global_locking;
MemoryRegion *alias;
hwaddr alias_offset;
int32_t priority;
- QTAILQ_HEAD(subregions, MemoryRegion) subregions;
+ QTAILQ_HEAD(, MemoryRegion) subregions;
QTAILQ_ENTRY(MemoryRegion) subregions_link;
- QTAILQ_HEAD(coalesced_ranges, CoalescedMemoryRange) coalesced;
+ QTAILQ_HEAD(, CoalescedMemoryRange) coalesced;
const char *name;
unsigned ioeventfd_nb;
MemoryRegionIoeventfd *ioeventfds;
int ioeventfd_nb;
struct MemoryRegionIoeventfd *ioeventfds;
- QTAILQ_HEAD(memory_listeners_as, MemoryListener) listeners;
+ QTAILQ_HEAD(, MemoryListener) listeners;
QTAILQ_ENTRY(AddressSpace) address_spaces_link;
};
* @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
+ * @nonvolatile: this section is non-volatile
*/
struct MemoryRegionSection {
MemoryRegion *mr;
Int128 size;
hwaddr offset_within_address_space;
bool readonly;
+ bool nonvolatile;
};
/**
/**
* memory_region_is_ram: check whether a memory region is random access
*
- * Returns %true is a memory region is random access.
+ * Returns %true if a memory region is random access.
*
* @mr: the memory region being queried
*/
/**
* memory_region_is_ram_device: check whether a memory region is a ram device
*
- * Returns %true is a memory region is a device backed ram region
+ * Returns %true if a memory region is a device backed ram region
*
* @mr: the memory region being queried
*/
/**
* memory_region_is_rom: check whether a memory region is ROM
*
- * Returns %true is a memory region is read-only memory.
+ * Returns %true if a memory region is read-only memory.
*
* @mr: the memory region being queried
*/
return mr->ram && mr->readonly;
}
+/**
+ * memory_region_is_nonvolatile: check whether a memory region is non-volatile
+ *
+ * Returns %true is a memory region is non-volatile memory.
+ *
+ * @mr: the memory region being queried
+ */
+static inline bool memory_region_is_nonvolatile(MemoryRegion *mr)
+{
+ return mr->nonvolatile;
+}
/**
* memory_region_get_fd: Get a file descriptor backing a RAM memory region.
*/
void memory_region_set_log(MemoryRegion *mr, bool log, unsigned client);
-/**
- * memory_region_get_dirty: Check whether a range of bytes is dirty
- * for a specified client.
- *
- * 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, hwaddr addr,
- hwaddr size, unsigned client);
-
/**
* memory_region_set_dirty: Mark a range of bytes as dirty in a memory region.
*
void memory_region_reset_dirty(MemoryRegion *mr, hwaddr addr,
hwaddr size, unsigned client);
+/**
+ * memory_region_flush_rom_device: Mark a range of pages dirty and invalidate
+ * TBs (for self-modifying code).
+ *
+ * The MemoryRegionOps->write() callback of a ROM device must use this function
+ * to mark byte ranges that have been modified internally, such as by directly
+ * accessing the memory returned by memory_region_get_ram_ptr().
+ *
+ * This function marks the range dirty and invalidates TBs so that TCG can
+ * detect self-modifying code.
+ *
+ * @mr: the region being flushed.
+ * @addr: the start, relative to the start of the region, of the range being
+ * flushed.
+ * @size: the size, in bytes, of the range being flushed.
+ */
+void memory_region_flush_rom_device(MemoryRegion *mr, hwaddr addr, hwaddr size);
+
/**
* memory_region_set_readonly: Turn a memory region read-only (or read-write)
*
*/
void memory_region_set_readonly(MemoryRegion *mr, bool readonly);
+/**
+ * memory_region_set_nonvolatile: Turn a memory region non-volatile
+ *
+ * Allows a memory region to be marked as non-volatile.
+ * only useful on RAM regions.
+ *
+ * @mr: the region being updated.
+ * @nonvolatile: whether rhe region is to be non-volatile.
+ */
+void memory_region_set_nonvolatile(MemoryRegion *mr, bool nonvolatile);
+
/**
* memory_region_rom_device_set_romd: enable/disable ROMD mode
*
*/
void memory_global_dirty_log_stop(void);
-void mtree_info(fprintf_function mon_printf, void *f, bool flatview,
- bool dispatch_tree, bool owner);
+void mtree_info(bool flatview, bool dispatch_tree, bool owner);
/**
* memory_region_dispatch_read: perform a read directly to the specified
*/
void address_space_destroy(AddressSpace *as);
+/**
+ * address_space_remove_listeners: unregister all listeners of an address space
+ *
+ * Removes all callbacks previously registered with memory_listener_register()
+ * for @as.
+ *
+ * @as: an initialized #AddressSpace
+ */
+void address_space_remove_listeners(AddressSpace *as);
+
/**
* address_space_rw: read from or write to an address space.
*
*/
MemTxResult address_space_rw(AddressSpace *as, hwaddr addr,
MemTxAttrs attrs, uint8_t *buf,
- int len, bool is_write);
+ hwaddr len, bool is_write);
/**
* address_space_write: write to address space.
*/
MemTxResult address_space_write(AddressSpace *as, hwaddr addr,
MemTxAttrs attrs,
- const uint8_t *buf, int len);
+ const uint8_t *buf, hwaddr len);
+
+/**
+ * address_space_write_rom: write to address space, including ROM.
+ *
+ * This function writes to the specified address space, but will
+ * write data to both ROM and RAM. This is used for non-guest
+ * writes like writes from the gdb debug stub or initial loading
+ * of ROM contents.
+ *
+ * Note that portions of the write which attempt to write data to
+ * a device will be silently ignored -- only real RAM and ROM will
+ * be written to.
+ *
+ * Return a MemTxResult indicating whether the operation succeeded
+ * or failed (eg unassigned memory, device rejected the transaction,
+ * IOMMU fault).
+ *
+ * @as: #AddressSpace to be accessed
+ * @addr: address within that address space
+ * @attrs: memory transaction attributes
+ * @buf: buffer with the data transferred
+ * @len: the number of bytes to write
+ */
+MemTxResult address_space_write_rom(AddressSpace *as, hwaddr addr,
+ MemTxAttrs attrs,
+ const uint8_t *buf, hwaddr len);
/* address_space_ld*: load from an address space
* address_space_st*: store to an address space
* @is_write: indicates the transfer direction
* @attrs: memory attributes
*/
-bool address_space_access_valid(AddressSpace *as, hwaddr addr, int len,
+bool address_space_access_valid(AddressSpace *as, hwaddr addr, hwaddr len,
bool is_write, MemTxAttrs attrs);
/* address_space_map: map a physical memory region into a host virtual address
/* Internal functions, part of the implementation of address_space_read. */
MemTxResult address_space_read_full(AddressSpace *as, hwaddr addr,
- MemTxAttrs attrs, uint8_t *buf, int len);
+ MemTxAttrs attrs, uint8_t *buf, hwaddr len);
MemTxResult flatview_read_continue(FlatView *fv, hwaddr addr,
MemTxAttrs attrs, uint8_t *buf,
- int len, hwaddr addr1, hwaddr l,
+ hwaddr len, hwaddr addr1, hwaddr l,
MemoryRegion *mr);
void *qemu_map_ram_ptr(RAMBlock *ram_block, ram_addr_t addr);
/* Internal functions, part of the implementation of address_space_read_cached
* and address_space_write_cached. */
void address_space_read_cached_slow(MemoryRegionCache *cache,
- hwaddr addr, void *buf, int len);
+ hwaddr addr, void *buf, hwaddr len);
void address_space_write_cached_slow(MemoryRegionCache *cache,
- hwaddr addr, const void *buf, int len);
+ hwaddr addr, const void *buf, hwaddr len);
static inline bool memory_access_is_direct(MemoryRegion *mr, bool is_write)
{
static inline __attribute__((__always_inline__))
MemTxResult address_space_read(AddressSpace *as, hwaddr addr,
MemTxAttrs attrs, uint8_t *buf,
- int len)
+ hwaddr len)
{
MemTxResult result = MEMTX_OK;
hwaddr l, addr1;
*/
static inline void
address_space_read_cached(MemoryRegionCache *cache, hwaddr addr,
- void *buf, int len)
+ void *buf, hwaddr len)
{
assert(addr < cache->len && len <= cache->len - addr);
if (likely(cache->ptr)) {
*/
static inline void
address_space_write_cached(MemoryRegionCache *cache, hwaddr addr,
- void *buf, int len)
+ void *buf, hwaddr len)
{
assert(addr < cache->len && len <= cache->len - addr);
if (likely(cache->ptr)) {
projects / mirror_qemu.git / blobdiff