* This work is licensed under the terms of the GNU GPL, version 2. See
* the COPYING file in the top-level directory.
*
+ * Contributions after 2012-01-13 are licensed under the terms of the
+ * GNU GPL, version 2 or (at your option) any later version.
*/
#include "memory.h"
#include "kvm.h"
#include <assert.h>
+#define WANT_EXEC_OBSOLETE
+#include "exec-obsolete.h"
+
unsigned memory_region_transaction_depth = 0;
static bool memory_region_update_pending = false;
+static bool global_dirty_log = false;
+
+static QLIST_HEAD(, MemoryListener) memory_listeners
+ = QLIST_HEAD_INITIALIZER(memory_listeners);
typedef struct AddrRange AddrRange;
}
}
-static void memory_region_prepare_ram_addr(MemoryRegion *mr);
-
static void as_memory_range_add(AddressSpace *as, FlatRange *fr)
{
- ram_addr_t phys_offset, region_offset;
-
- memory_region_prepare_ram_addr(fr->mr);
-
- phys_offset = fr->mr->ram_addr;
- region_offset = fr->offset_in_region;
- /* cpu_register_physical_memory_log() wants region_offset for
- * mmio, but prefers offseting phys_offset for RAM. Humour it.
- */
- if ((phys_offset & ~TARGET_PAGE_MASK) <= IO_MEM_ROM) {
- phys_offset += region_offset;
- region_offset = 0;
- }
-
- if (!fr->readable) {
- phys_offset &= ~TARGET_PAGE_MASK & ~IO_MEM_ROMD;
- }
-
- if (fr->readonly) {
- phys_offset |= IO_MEM_ROM;
- }
+ MemoryRegionSection section = {
+ .mr = fr->mr,
+ .offset_within_address_space = int128_get64(fr->addr.start),
+ .offset_within_region = fr->offset_in_region,
+ .size = int128_get64(fr->addr.size),
+ };
- cpu_register_physical_memory_log(int128_get64(fr->addr.start),
- int128_get64(fr->addr.size),
- phys_offset,
- region_offset,
- fr->dirty_log_mask);
+ cpu_register_physical_memory_log(§ion, fr->readable, fr->readonly);
}
static void as_memory_range_del(AddressSpace *as, FlatRange *fr)
{
- if (fr->dirty_log_mask) {
- Int128 end = addrrange_end(fr->addr);
- cpu_physical_sync_dirty_bitmap(int128_get64(fr->addr.start),
- int128_get64(end));
- }
- cpu_register_physical_memory(int128_get64(fr->addr.start),
- int128_get64(fr->addr.size),
- IO_MEM_UNASSIGNED);
+ MemoryRegionSection section = {
+ .mr = &io_mem_unassigned,
+ .offset_within_address_space = int128_get64(fr->addr.start),
+ .offset_within_region = int128_get64(fr->addr.start),
+ .size = int128_get64(fr->addr.size),
+ };
+
+ cpu_register_physical_memory_log(§ion, true, false);
}
static void as_memory_log_start(AddressSpace *as, FlatRange *fr)
{
- cpu_physical_log_start(int128_get64(fr->addr.start),
- int128_get64(fr->addr.size));
}
static void as_memory_log_stop(AddressSpace *as, FlatRange *fr)
{
- cpu_physical_log_stop(int128_get64(fr->addr.start),
- int128_get64(fr->addr.size));
}
static void as_memory_ioeventfd_add(AddressSpace *as, MemoryRegionIoeventfd *fd)
.ops = &address_space_ops_io,
};
+static AddressSpace *memory_region_to_address_space(MemoryRegion *mr)
+{
+ while (mr->parent) {
+ mr = mr->parent;
+ }
+ if (mr == address_space_memory.root) {
+ return &address_space_memory;
+ }
+ if (mr == address_space_io.root) {
+ return &address_space_io;
+ }
+ abort();
+}
+
/* Render a memory region into the global view. Ranges in @view obscure
* ranges in @mr.
*/
as->ioeventfd_nb = ioeventfd_nb;
}
+typedef void ListenerCallback(MemoryListener *listener,
+ MemoryRegionSection *mrs);
+
+/* Want "void (&MemoryListener::*callback)(const MemoryRegionSection& s)" */
+static void memory_listener_update_region(FlatRange *fr, AddressSpace *as,
+ size_t callback_offset)
+{
+ MemoryRegionSection section = {
+ .mr = fr->mr,
+ .address_space = as->root,
+ .offset_within_region = fr->offset_in_region,
+ .size = int128_get64(fr->addr.size),
+ .offset_within_address_space = int128_get64(fr->addr.start),
+ };
+ MemoryListener *listener;
+
+ QLIST_FOREACH(listener, &memory_listeners, link) {
+ ListenerCallback *callback
+ = *(ListenerCallback **)((void *)listener + callback_offset);
+ callback(listener, §ion);
+ }
+}
+
+#define MEMORY_LISTENER_UPDATE_REGION(fr, as, callback) \
+ memory_listener_update_region(fr, as, offsetof(MemoryListener, callback))
+
static void address_space_update_topology_pass(AddressSpace *as,
FlatView old_view,
FlatView new_view,
/* In old, but (not in new, or in new but attributes changed). */
if (!adding) {
+ MEMORY_LISTENER_UPDATE_REGION(frold, as, region_del);
as->ops->range_del(as, frold);
}
if (adding) {
if (frold->dirty_log_mask && !frnew->dirty_log_mask) {
+ MEMORY_LISTENER_UPDATE_REGION(frnew, as, log_stop);
as->ops->log_stop(as, frnew);
} else if (frnew->dirty_log_mask && !frold->dirty_log_mask) {
as->ops->log_start(as, frnew);
+ MEMORY_LISTENER_UPDATE_REGION(frnew, as, log_start);
}
}
if (adding) {
as->ops->range_add(as, frnew);
+ MEMORY_LISTENER_UPDATE_REGION(frnew, as, region_add);
}
++inew;
static void memory_region_destructor_rom_device(MemoryRegion *mr)
{
qemu_ram_free(mr->ram_addr & TARGET_PAGE_MASK);
- cpu_unregister_io_memory(mr->ram_addr & ~(TARGET_PAGE_MASK | IO_MEM_ROMD));
+ cpu_unregister_io_memory(mr->ram_addr & ~TARGET_PAGE_MASK);
+}
+
+static bool memory_region_wrong_endianness(MemoryRegion *mr)
+{
+#ifdef TARGET_WORDS_BIGENDIAN
+ return mr->ops->endianness == DEVICE_LITTLE_ENDIAN;
+#else
+ return mr->ops->endianness == DEVICE_BIG_ENDIAN;
+#endif
}
void memory_region_init(MemoryRegion *mr,
}
mr->addr = 0;
mr->offset = 0;
+ mr->subpage = false;
mr->enabled = true;
mr->terminates = false;
+ mr->ram = false;
mr->readable = true;
mr->readonly = false;
+ mr->rom_device = false;
mr->destructor = memory_region_destructor_none;
mr->priority = 0;
mr->may_overlap = false;
return true;
}
-static uint32_t memory_region_read_thunk_n(void *_mr,
- target_phys_addr_t addr,
- unsigned size)
+static uint64_t memory_region_dispatch_read1(MemoryRegion *mr,
+ target_phys_addr_t addr,
+ unsigned size)
{
- MemoryRegion *mr = _mr;
uint64_t data = 0;
if (!memory_region_access_valid(mr, addr, size, false)) {
return data;
}
-static void memory_region_write_thunk_n(void *_mr,
- target_phys_addr_t addr,
- unsigned size,
- uint64_t data)
+static void adjust_endianness(MemoryRegion *mr, uint64_t *data, unsigned size)
+{
+ if (memory_region_wrong_endianness(mr)) {
+ switch (size) {
+ case 1:
+ break;
+ case 2:
+ *data = bswap16(*data);
+ break;
+ case 4:
+ *data = bswap32(*data);
+ break;
+ default:
+ abort();
+ }
+ }
+}
+
+static uint64_t memory_region_dispatch_read(MemoryRegion *mr,
+ target_phys_addr_t addr,
+ unsigned size)
{
- MemoryRegion *mr = _mr;
+ uint64_t ret;
+ ret = memory_region_dispatch_read1(mr, addr, size);
+ adjust_endianness(mr, &ret, size);
+ return ret;
+}
+
+static void memory_region_dispatch_write(MemoryRegion *mr,
+ target_phys_addr_t addr,
+ uint64_t data,
+ unsigned size)
+{
if (!memory_region_access_valid(mr, addr, size, true)) {
return; /* FIXME: better signalling */
}
+ adjust_endianness(mr, &data, size);
+
if (!mr->ops->write) {
mr->ops->old_mmio.write[bitops_ffsl(size)](mr->opaque, addr, data);
return;
memory_region_write_accessor, mr);
}
-static uint32_t memory_region_read_thunk_b(void *mr, target_phys_addr_t addr)
-{
- return memory_region_read_thunk_n(mr, addr, 1);
-}
-
-static uint32_t memory_region_read_thunk_w(void *mr, target_phys_addr_t addr)
-{
- return memory_region_read_thunk_n(mr, addr, 2);
-}
-
-static uint32_t memory_region_read_thunk_l(void *mr, target_phys_addr_t addr)
-{
- return memory_region_read_thunk_n(mr, addr, 4);
-}
-
-static void memory_region_write_thunk_b(void *mr, target_phys_addr_t addr,
- uint32_t data)
-{
- memory_region_write_thunk_n(mr, addr, 1, data);
-}
-
-static void memory_region_write_thunk_w(void *mr, target_phys_addr_t addr,
- uint32_t data)
-{
- memory_region_write_thunk_n(mr, addr, 2, data);
-}
-
-static void memory_region_write_thunk_l(void *mr, target_phys_addr_t addr,
- uint32_t data)
-{
- memory_region_write_thunk_n(mr, addr, 4, data);
-}
-
-static CPUReadMemoryFunc * const memory_region_read_thunk[] = {
- memory_region_read_thunk_b,
- memory_region_read_thunk_w,
- memory_region_read_thunk_l,
-};
-
-static CPUWriteMemoryFunc * const memory_region_write_thunk[] = {
- memory_region_write_thunk_b,
- memory_region_write_thunk_w,
- memory_region_write_thunk_l,
-};
-
-static void memory_region_prepare_ram_addr(MemoryRegion *mr)
-{
- if (mr->backend_registered) {
- return;
- }
-
- mr->destructor = memory_region_destructor_iomem;
- mr->ram_addr = cpu_register_io_memory(memory_region_read_thunk,
- memory_region_write_thunk,
- mr,
- mr->ops->endianness);
- mr->backend_registered = true;
-}
-
void memory_region_init_io(MemoryRegion *mr,
const MemoryRegionOps *ops,
void *opaque,
mr->ops = ops;
mr->opaque = opaque;
mr->terminates = true;
- mr->backend_registered = false;
+ mr->destructor = memory_region_destructor_iomem;
+ mr->ram_addr = cpu_register_io_memory(mr);
}
void memory_region_init_ram(MemoryRegion *mr,
- DeviceState *dev,
const char *name,
uint64_t size)
{
memory_region_init(mr, name, size);
+ mr->ram = true;
mr->terminates = true;
mr->destructor = memory_region_destructor_ram;
- mr->ram_addr = qemu_ram_alloc(dev, name, size, mr);
- mr->backend_registered = true;
+ mr->ram_addr = qemu_ram_alloc(size, mr);
}
void memory_region_init_ram_ptr(MemoryRegion *mr,
- DeviceState *dev,
const char *name,
uint64_t size,
void *ptr)
{
memory_region_init(mr, name, size);
+ mr->ram = true;
mr->terminates = true;
mr->destructor = memory_region_destructor_ram_from_ptr;
- mr->ram_addr = qemu_ram_alloc_from_ptr(dev, name, size, ptr, mr);
- mr->backend_registered = true;
+ mr->ram_addr = qemu_ram_alloc_from_ptr(size, ptr, mr);
}
void memory_region_init_alias(MemoryRegion *mr,
void memory_region_init_rom_device(MemoryRegion *mr,
const MemoryRegionOps *ops,
void *opaque,
- DeviceState *dev,
const char *name,
uint64_t size)
{
mr->ops = ops;
mr->opaque = opaque;
mr->terminates = true;
+ mr->rom_device = true;
mr->destructor = memory_region_destructor_rom_device;
- mr->ram_addr = qemu_ram_alloc(dev, name, size, mr);
- mr->ram_addr |= cpu_register_io_memory(memory_region_read_thunk,
- memory_region_write_thunk,
- mr,
- mr->ops->endianness);
- mr->ram_addr |= IO_MEM_ROMD;
- mr->backend_registered = true;
+ mr->ram_addr = qemu_ram_alloc(size, mr);
+ mr->ram_addr |= cpu_register_io_memory(mr);
+}
+
+static uint64_t invalid_read(void *opaque, target_phys_addr_t addr,
+ unsigned size)
+{
+ MemoryRegion *mr = opaque;
+
+ if (!mr->warning_printed) {
+ fprintf(stderr, "Invalid read from memory region %s\n", mr->name);
+ mr->warning_printed = true;
+ }
+ return -1U;
+}
+
+static void invalid_write(void *opaque, target_phys_addr_t addr, uint64_t data,
+ unsigned size)
+{
+ MemoryRegion *mr = opaque;
+
+ if (!mr->warning_printed) {
+ fprintf(stderr, "Invalid write to memory region %s\n", mr->name);
+ mr->warning_printed = true;
+ }
+}
+
+static const MemoryRegionOps reservation_ops = {
+ .read = invalid_read,
+ .write = invalid_write,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+};
+
+void memory_region_init_reservation(MemoryRegion *mr,
+ const char *name,
+ uint64_t size)
+{
+ memory_region_init_io(mr, &reservation_ops, mr, name, size);
}
void memory_region_destroy(MemoryRegion *mr)
return int128_get64(mr->size);
}
+const char *memory_region_name(MemoryRegion *mr)
+{
+ return mr->name;
+}
+
+bool memory_region_is_ram(MemoryRegion *mr)
+{
+ return mr->ram;
+}
+
+bool memory_region_is_logging(MemoryRegion *mr)
+{
+ return mr->dirty_log_mask;
+}
+
+bool memory_region_is_rom(MemoryRegion *mr)
+{
+ return mr->ram && mr->readonly;
+}
+
void memory_region_set_offset(MemoryRegion *mr, target_phys_addr_t offset)
{
mr->offset = offset;
return cpu_physical_memory_get_dirty(mr->ram_addr + addr, 1 << client);
}
-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)
{
assert(mr->terminates);
- return cpu_physical_memory_set_dirty(mr->ram_addr + addr);
+ return cpu_physical_memory_set_dirty_range(mr->ram_addr + addr, size, -1);
}
void memory_region_sync_dirty_bitmap(MemoryRegion *mr)
FOR_EACH_FLAT_RANGE(fr, &address_space_memory.current_map) {
if (fr->mr == mr) {
- cpu_physical_sync_dirty_bitmap(int128_get64(fr->addr.start),
- int128_get64(addrrange_end(fr->addr)));
+ MEMORY_LISTENER_UPDATE_REGION(fr, &address_space_memory, log_sync);
}
}
}
memory_region_update_topology(mr);
}
+ram_addr_t memory_region_get_ram_addr(MemoryRegion *mr)
+{
+ return mr->ram_addr;
+}
+
+static int cmp_flatrange_addr(const void *addr_, const void *fr_)
+{
+ const AddrRange *addr = addr_;
+ const FlatRange *fr = fr_;
+
+ if (int128_le(addrrange_end(*addr), fr->addr.start)) {
+ return -1;
+ } else if (int128_ge(addr->start, addrrange_end(fr->addr))) {
+ return 1;
+ }
+ return 0;
+}
+
+static FlatRange *address_space_lookup(AddressSpace *as, AddrRange addr)
+{
+ return bsearch(&addr, as->current_map.ranges, as->current_map.nr,
+ sizeof(FlatRange), cmp_flatrange_addr);
+}
+
+MemoryRegionSection memory_region_find(MemoryRegion *address_space,
+ target_phys_addr_t addr, uint64_t size)
+{
+ AddressSpace *as = memory_region_to_address_space(address_space);
+ AddrRange range = addrrange_make(int128_make64(addr),
+ int128_make64(size));
+ FlatRange *fr = address_space_lookup(as, range);
+ MemoryRegionSection ret = { .mr = NULL, .size = 0 };
+
+ if (!fr) {
+ return ret;
+ }
+
+ while (fr > as->current_map.ranges
+ && addrrange_intersects(fr[-1].addr, range)) {
+ --fr;
+ }
+
+ ret.mr = fr->mr;
+ range = addrrange_intersection(range, fr->addr);
+ ret.offset_within_region = fr->offset_in_region;
+ ret.offset_within_region += int128_get64(int128_sub(range.start,
+ fr->addr.start));
+ ret.size = int128_get64(range.size);
+ ret.offset_within_address_space = int128_get64(range.start);
+ return ret;
+}
+
+void memory_global_sync_dirty_bitmap(MemoryRegion *address_space)
+{
+ AddressSpace *as = memory_region_to_address_space(address_space);
+ FlatRange *fr;
+
+ FOR_EACH_FLAT_RANGE(fr, &as->current_map) {
+ MEMORY_LISTENER_UPDATE_REGION(fr, as, log_sync);
+ }
+}
+
+void memory_global_dirty_log_start(void)
+{
+ MemoryListener *listener;
+
+ cpu_physical_memory_set_dirty_tracking(1);
+ global_dirty_log = true;
+ QLIST_FOREACH(listener, &memory_listeners, link) {
+ listener->log_global_start(listener);
+ }
+}
+
+void memory_global_dirty_log_stop(void)
+{
+ MemoryListener *listener;
+
+ global_dirty_log = false;
+ QLIST_FOREACH(listener, &memory_listeners, link) {
+ listener->log_global_stop(listener);
+ }
+ cpu_physical_memory_set_dirty_tracking(0);
+}
+
+static void listener_add_address_space(MemoryListener *listener,
+ AddressSpace *as)
+{
+ FlatRange *fr;
+
+ if (global_dirty_log) {
+ listener->log_global_start(listener);
+ }
+ FOR_EACH_FLAT_RANGE(fr, &as->current_map) {
+ MemoryRegionSection section = {
+ .mr = fr->mr,
+ .address_space = as->root,
+ .offset_within_region = fr->offset_in_region,
+ .size = int128_get64(fr->addr.size),
+ .offset_within_address_space = int128_get64(fr->addr.start),
+ };
+ listener->region_add(listener, §ion);
+ }
+}
+
+void memory_listener_register(MemoryListener *listener)
+{
+ QLIST_INSERT_HEAD(&memory_listeners, listener, link);
+ listener_add_address_space(listener, &address_space_memory);
+ listener_add_address_space(listener, &address_space_io);
+}
+
+void memory_listener_unregister(MemoryListener *listener)
+{
+ QLIST_REMOVE(listener, link);
+}
+
void set_system_memory_map(MemoryRegion *mr)
{
address_space_memory.root = mr;
memory_region_update_topology(NULL);
}
+uint64_t io_mem_read(int io_index, target_phys_addr_t addr, unsigned size)
+{
+ return memory_region_dispatch_read(io_mem_region[io_index], addr, size);
+}
+
+void io_mem_write(int io_index, target_phys_addr_t addr,
+ uint64_t val, unsigned size)
+{
+ memory_region_dispatch_write(io_mem_region[io_index], addr, val, size);
+}
+
typedef struct MemoryRegionList MemoryRegionList;
struct MemoryRegionList {
projects / lisovros / qemu_apohw.git / blobdiff