* 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 QTAILQ_HEAD(memory_listeners, MemoryListener) memory_listeners
+ = QTAILQ_HEAD_INITIALIZER(memory_listeners);
typedef struct AddrRange AddrRange;
* (large MemoryRegion::alias_offset).
*/
struct AddrRange {
- int64_t start;
- int64_t size;
+ Int128 start;
+ Int128 size;
};
-static AddrRange addrrange_make(int64_t start, int64_t size)
+static AddrRange addrrange_make(Int128 start, Int128 size)
{
return (AddrRange) { start, size };
}
static bool addrrange_equal(AddrRange r1, AddrRange r2)
{
- return r1.start == r2.start && r1.size == r2.size;
+ return int128_eq(r1.start, r2.start) && int128_eq(r1.size, r2.size);
}
-static int64_t addrrange_end(AddrRange r)
+static Int128 addrrange_end(AddrRange r)
{
- return r.start + r.size;
+ return int128_add(r.start, r.size);
}
-static AddrRange addrrange_shift(AddrRange range, int64_t delta)
+static AddrRange addrrange_shift(AddrRange range, Int128 delta)
{
- range.start += delta;
+ int128_addto(&range.start, delta);
return range;
}
+static bool addrrange_contains(AddrRange range, Int128 addr)
+{
+ return int128_ge(addr, range.start)
+ && int128_lt(addr, addrrange_end(range));
+}
+
static bool addrrange_intersects(AddrRange r1, AddrRange r2)
{
- return (r1.start >= r2.start && (r1.start - r2.start) < r2.size)
- || (r2.start >= r1.start && (r2.start - r1.start) < r1.size);
+ return addrrange_contains(r1, r2.start)
+ || addrrange_contains(r2, r1.start);
}
static AddrRange addrrange_intersection(AddrRange r1, AddrRange r2)
{
- int64_t start = MAX(r1.start, r2.start);
- /* off-by-one arithmetic to prevent overflow */
- int64_t end = MIN(addrrange_end(r1) - 1, addrrange_end(r2) - 1);
- return addrrange_make(start, end - start + 1);
-}
+ Int128 start = int128_max(r1.start, r2.start);
+ Int128 end = int128_min(addrrange_end(r1), addrrange_end(r2));
+ return addrrange_make(start, int128_sub(end, start));
+}
+
+enum ListenerDirection { Forward, Reverse };
+
+static bool memory_listener_match(MemoryListener *listener,
+ MemoryRegionSection *section)
+{
+ return !listener->address_space_filter
+ || listener->address_space_filter == section->address_space;
+}
+
+#define MEMORY_LISTENER_CALL_GLOBAL(_callback, _direction, _args...) \
+ do { \
+ MemoryListener *_listener; \
+ \
+ switch (_direction) { \
+ case Forward: \
+ QTAILQ_FOREACH(_listener, &memory_listeners, link) { \
+ _listener->_callback(_listener, ##_args); \
+ } \
+ break; \
+ case Reverse: \
+ QTAILQ_FOREACH_REVERSE(_listener, &memory_listeners, \
+ memory_listeners, link) { \
+ _listener->_callback(_listener, ##_args); \
+ } \
+ break; \
+ default: \
+ abort(); \
+ } \
+ } while (0)
+
+#define MEMORY_LISTENER_CALL(_callback, _direction, _section, _args...) \
+ do { \
+ MemoryListener *_listener; \
+ \
+ switch (_direction) { \
+ case Forward: \
+ QTAILQ_FOREACH(_listener, &memory_listeners, link) { \
+ if (memory_listener_match(_listener, _section)) { \
+ _listener->_callback(_listener, _section, ##_args); \
+ } \
+ } \
+ break; \
+ case Reverse: \
+ QTAILQ_FOREACH_REVERSE(_listener, &memory_listeners, \
+ memory_listeners, link) { \
+ if (memory_listener_match(_listener, _section)) { \
+ _listener->_callback(_listener, _section, ##_args); \
+ } \
+ } \
+ break; \
+ default: \
+ abort(); \
+ } \
+ } while (0)
+
+#define MEMORY_LISTENER_UPDATE_REGION(fr, as, dir, callback) \
+ MEMORY_LISTENER_CALL(callback, dir, (&(MemoryRegionSection) { \
+ .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), \
+ .readonly = (fr)->readonly, \
+ }))
struct CoalescedMemoryRange {
AddrRange addr;
static bool memory_region_ioeventfd_before(MemoryRegionIoeventfd a,
MemoryRegionIoeventfd b)
{
- if (a.addr.start < b.addr.start) {
+ if (int128_lt(a.addr.start, b.addr.start)) {
return true;
- } else if (a.addr.start > b.addr.start) {
+ } else if (int128_gt(a.addr.start, b.addr.start)) {
return false;
- } else if (a.addr.size < b.addr.size) {
+ } else if (int128_lt(a.addr.size, b.addr.size)) {
return true;
- } else if (a.addr.size > b.addr.size) {
+ } else if (int128_gt(a.addr.size, b.addr.size)) {
return false;
} else if (a.match_data < b.match_data) {
return true;
AddrRange addr;
uint8_t dirty_log_mask;
bool readable;
+ bool readonly;
};
/* Flattened global view of current active memory hierarchy. Kept in sorted
/* A system address space - I/O, memory, etc. */
struct AddressSpace {
- const AddressSpaceOps *ops;
MemoryRegion *root;
FlatView current_map;
int ioeventfd_nb;
MemoryRegionIoeventfd *ioeventfds;
};
-struct AddressSpaceOps {
- void (*range_add)(AddressSpace *as, FlatRange *fr);
- void (*range_del)(AddressSpace *as, FlatRange *fr);
- void (*log_start)(AddressSpace *as, FlatRange *fr);
- void (*log_stop)(AddressSpace *as, FlatRange *fr);
- void (*ioeventfd_add)(AddressSpace *as, MemoryRegionIoeventfd *fd);
- void (*ioeventfd_del)(AddressSpace *as, MemoryRegionIoeventfd *fd);
-};
-
#define FOR_EACH_FLAT_RANGE(var, view) \
for (var = (view)->ranges; var < (view)->ranges + (view)->nr; ++var)
return a->mr == b->mr
&& addrrange_equal(a->addr, b->addr)
&& a->offset_in_region == b->offset_in_region
- && a->readable == b->readable;
+ && a->readable == b->readable
+ && a->readonly == b->readonly;
}
static void flatview_init(FlatView *view)
static bool can_merge(FlatRange *r1, FlatRange *r2)
{
- return addrrange_end(r1->addr) == r2->addr.start
+ return int128_eq(addrrange_end(r1->addr), r2->addr.start)
&& r1->mr == r2->mr
- && r1->offset_in_region + r1->addr.size == r2->offset_in_region
+ && int128_eq(int128_add(int128_make64(r1->offset_in_region),
+ r1->addr.size),
+ int128_make64(r2->offset_in_region))
&& r1->dirty_log_mask == r2->dirty_log_mask
- && r1->readable == r2->readable;
+ && r1->readable == r2->readable
+ && r1->readonly == r2->readonly;
}
/* Attempt to simplify a view by merging ajacent ranges */
j = i + 1;
while (j < view->nr
&& can_merge(&view->ranges[j-1], &view->ranges[j])) {
- view->ranges[i].addr.size += view->ranges[j].addr.size;
+ int128_addto(&view->ranges[i].addr.size, view->ranges[j].addr.size);
++j;
}
++i;
}
}
-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;
- }
-
- cpu_register_physical_memory_log(fr->addr.start,
- fr->addr.size,
- phys_offset,
- region_offset,
- fr->dirty_log_mask);
-}
-
-static void as_memory_range_del(AddressSpace *as, FlatRange *fr)
-{
- if (fr->dirty_log_mask) {
- cpu_physical_sync_dirty_bitmap(fr->addr.start,
- fr->addr.start + fr->addr.size);
- }
- cpu_register_physical_memory(fr->addr.start, fr->addr.size,
- IO_MEM_UNASSIGNED);
-}
-
-static void as_memory_log_start(AddressSpace *as, FlatRange *fr)
-{
- cpu_physical_log_start(fr->addr.start, fr->addr.size);
-}
-
-static void as_memory_log_stop(AddressSpace *as, FlatRange *fr)
-{
- cpu_physical_log_stop(fr->addr.start, fr->addr.size);
-}
-
-static void as_memory_ioeventfd_add(AddressSpace *as, MemoryRegionIoeventfd *fd)
-{
- int r;
-
- assert(fd->match_data && fd->addr.size == 4);
-
- r = kvm_set_ioeventfd_mmio_long(fd->fd, fd->addr.start, fd->data, true);
- if (r < 0) {
- abort();
- }
-}
-
-static void as_memory_ioeventfd_del(AddressSpace *as, MemoryRegionIoeventfd *fd)
-{
- int r;
-
- r = kvm_set_ioeventfd_mmio_long(fd->fd, fd->addr.start, fd->data, false);
- if (r < 0) {
- abort();
- }
-}
-
-static const AddressSpaceOps address_space_ops_memory = {
- .range_add = as_memory_range_add,
- .range_del = as_memory_range_del,
- .log_start = as_memory_log_start,
- .log_stop = as_memory_log_stop,
- .ioeventfd_add = as_memory_ioeventfd_add,
- .ioeventfd_del = as_memory_ioeventfd_del,
-};
-
-static AddressSpace address_space_memory = {
- .ops = &address_space_ops_memory,
-};
+static AddressSpace address_space_memory;
static const MemoryRegionPortio *find_portio(MemoryRegion *mr, uint64_t offset,
unsigned width, bool write)
*data = ((uint64_t)1 << (width * 8)) - 1;
if (mrp) {
*data = mrp->read(mr->opaque, offset);
+ } else if (width == 2) {
+ mrp = find_portio(mr, offset, 1, false);
+ assert(mrp);
+ *data = mrp->read(mr->opaque, offset) |
+ (mrp->read(mr->opaque, offset + 1) << 8);
}
return;
}
if (mrp) {
mrp->write(mr->opaque, offset, data);
+ } else if (width == 2) {
+ mrp = find_portio(mr, offset, 1, false);
+ assert(mrp);
+ mrp->write(mr->opaque, offset, data & 0xff);
+ mrp->write(mr->opaque, offset + 1, data >> 8);
}
return;
}
memory_region_write_accessor, mr);
}
-static const IORangeOps memory_region_iorange_ops = {
+const IORangeOps memory_region_iorange_ops = {
.read = memory_region_iorange_read,
.write = memory_region_iorange_write,
};
-static void as_io_range_add(AddressSpace *as, FlatRange *fr)
-{
- iorange_init(&fr->mr->iorange, &memory_region_iorange_ops,
- fr->addr.start,fr->addr.size);
- ioport_register(&fr->mr->iorange);
-}
-
-static void as_io_range_del(AddressSpace *as, FlatRange *fr)
-{
- isa_unassign_ioport(fr->addr.start, fr->addr.size);
-}
+static AddressSpace address_space_io;
-static void as_io_ioeventfd_add(AddressSpace *as, MemoryRegionIoeventfd *fd)
+static AddressSpace *memory_region_to_address_space(MemoryRegion *mr)
{
- int r;
-
- assert(fd->match_data && fd->addr.size == 2);
-
- r = kvm_set_ioeventfd_pio_word(fd->fd, fd->addr.start, fd->data, true);
- if (r < 0) {
- abort();
+ while (mr->parent) {
+ mr = mr->parent;
}
-}
-
-static void as_io_ioeventfd_del(AddressSpace *as, MemoryRegionIoeventfd *fd)
-{
- int r;
-
- r = kvm_set_ioeventfd_pio_word(fd->fd, fd->addr.start, fd->data, false);
- if (r < 0) {
- abort();
+ if (mr == address_space_memory.root) {
+ return &address_space_memory;
}
+ if (mr == address_space_io.root) {
+ return &address_space_io;
+ }
+ abort();
}
-static const AddressSpaceOps address_space_ops_io = {
- .range_add = as_io_range_add,
- .range_del = as_io_range_del,
- .ioeventfd_add = as_io_ioeventfd_add,
- .ioeventfd_del = as_io_ioeventfd_del,
-};
-
-static AddressSpace address_space_io = {
- .ops = &address_space_ops_io,
-};
-
/* Render a memory region into the global view. Ranges in @view obscure
* ranges in @mr.
*/
static void render_memory_region(FlatView *view,
MemoryRegion *mr,
- target_phys_addr_t base,
- AddrRange clip)
+ Int128 base,
+ AddrRange clip,
+ bool readonly)
{
MemoryRegion *subregion;
unsigned i;
target_phys_addr_t offset_in_region;
- int64_t remain;
- int64_t now;
+ Int128 remain;
+ Int128 now;
FlatRange fr;
AddrRange tmp;
- base += mr->addr;
+ if (!mr->enabled) {
+ return;
+ }
+
+ int128_addto(&base, int128_make64(mr->addr));
+ readonly |= mr->readonly;
tmp = addrrange_make(base, mr->size);
clip = addrrange_intersection(tmp, clip);
if (mr->alias) {
- base -= mr->alias->addr;
- base -= mr->alias_offset;
- render_memory_region(view, mr->alias, base, clip);
+ int128_subfrom(&base, int128_make64(mr->alias->addr));
+ int128_subfrom(&base, int128_make64(mr->alias_offset));
+ render_memory_region(view, mr->alias, base, clip, readonly);
return;
}
/* Render subregions in priority order. */
QTAILQ_FOREACH(subregion, &mr->subregions, subregions_link) {
- render_memory_region(view, subregion, base, clip);
+ render_memory_region(view, subregion, base, clip, readonly);
}
if (!mr->terminates) {
return;
}
- offset_in_region = clip.start - base;
+ offset_in_region = int128_get64(int128_sub(clip.start, base));
base = clip.start;
remain = clip.size;
/* Render the region itself into any gaps left by the current view. */
- for (i = 0; i < view->nr && remain; ++i) {
- if (base >= addrrange_end(view->ranges[i].addr)) {
+ for (i = 0; i < view->nr && int128_nz(remain); ++i) {
+ if (int128_ge(base, addrrange_end(view->ranges[i].addr))) {
continue;
}
- if (base < view->ranges[i].addr.start) {
- now = MIN(remain, view->ranges[i].addr.start - base);
+ if (int128_lt(base, view->ranges[i].addr.start)) {
+ now = int128_min(remain,
+ int128_sub(view->ranges[i].addr.start, base));
fr.mr = mr;
fr.offset_in_region = offset_in_region;
fr.addr = addrrange_make(base, now);
fr.dirty_log_mask = mr->dirty_log_mask;
fr.readable = mr->readable;
+ fr.readonly = readonly;
flatview_insert(view, i, &fr);
++i;
- base += now;
- offset_in_region += now;
- remain -= now;
+ int128_addto(&base, now);
+ offset_in_region += int128_get64(now);
+ int128_subfrom(&remain, now);
}
- if (base == view->ranges[i].addr.start) {
- now = MIN(remain, view->ranges[i].addr.size);
- base += now;
- offset_in_region += now;
- remain -= now;
+ if (int128_eq(base, view->ranges[i].addr.start)) {
+ now = int128_min(remain, view->ranges[i].addr.size);
+ int128_addto(&base, now);
+ offset_in_region += int128_get64(now);
+ int128_subfrom(&remain, now);
}
}
- if (remain) {
+ if (int128_nz(remain)) {
fr.mr = mr;
fr.offset_in_region = offset_in_region;
fr.addr = addrrange_make(base, remain);
fr.dirty_log_mask = mr->dirty_log_mask;
fr.readable = mr->readable;
+ fr.readonly = readonly;
flatview_insert(view, i, &fr);
}
}
flatview_init(&view);
- render_memory_region(&view, mr, 0, addrrange_make(0, INT64_MAX));
+ render_memory_region(&view, mr, int128_zero(),
+ addrrange_make(int128_zero(), int128_2_64()), false);
flatview_simplify(&view);
return view;
unsigned fds_old_nb)
{
unsigned iold, inew;
+ MemoryRegionIoeventfd *fd;
+ MemoryRegionSection section;
/* Generate a symmetric difference of the old and new fd sets, adding
* and deleting as necessary.
&& (inew == fds_new_nb
|| memory_region_ioeventfd_before(fds_old[iold],
fds_new[inew]))) {
- as->ops->ioeventfd_del(as, &fds_old[iold]);
+ fd = &fds_old[iold];
+ section = (MemoryRegionSection) {
+ .address_space = as->root,
+ .offset_within_address_space = int128_get64(fd->addr.start),
+ .size = int128_get64(fd->addr.size),
+ };
+ MEMORY_LISTENER_CALL(eventfd_del, Forward, §ion,
+ fd->match_data, fd->data, fd->fd);
++iold;
} else if (inew < fds_new_nb
&& (iold == fds_old_nb
|| memory_region_ioeventfd_before(fds_new[inew],
fds_old[iold]))) {
- as->ops->ioeventfd_add(as, &fds_new[inew]);
+ fd = &fds_new[inew];
+ section = (MemoryRegionSection) {
+ .address_space = as->root,
+ .offset_within_address_space = int128_get64(fd->addr.start),
+ .size = int128_get64(fd->addr.size),
+ };
+ MEMORY_LISTENER_CALL(eventfd_add, Reverse, §ion,
+ fd->match_data, fd->data, fd->fd);
++inew;
} else {
++iold;
FOR_EACH_FLAT_RANGE(fr, &as->current_map) {
for (i = 0; i < fr->mr->ioeventfd_nb; ++i) {
tmp = addrrange_shift(fr->mr->ioeventfds[i].addr,
- fr->addr.start - fr->offset_in_region);
+ int128_sub(fr->addr.start,
+ int128_make64(fr->offset_in_region)));
if (addrrange_intersects(fr->addr, tmp)) {
++ioeventfd_nb;
ioeventfds = g_realloc(ioeventfds,
if (frold
&& (!frnew
- || frold->addr.start < frnew->addr.start
- || (frold->addr.start == frnew->addr.start
+ || int128_lt(frold->addr.start, frnew->addr.start)
+ || (int128_eq(frold->addr.start, frnew->addr.start)
&& !flatrange_equal(frold, frnew)))) {
/* In old, but (not in new, or in new but attributes changed). */
if (!adding) {
- as->ops->range_del(as, frold);
+ MEMORY_LISTENER_UPDATE_REGION(frold, as, Reverse, region_del);
}
++iold;
/* In both (logging may have changed) */
if (adding) {
+ MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, region_nop);
if (frold->dirty_log_mask && !frnew->dirty_log_mask) {
- as->ops->log_stop(as, frnew);
+ MEMORY_LISTENER_UPDATE_REGION(frnew, as, Reverse, log_stop);
} else if (frnew->dirty_log_mask && !frold->dirty_log_mask) {
- as->ops->log_start(as, frnew);
+ MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, log_start);
}
}
/* In new */
if (adding) {
- as->ops->range_add(as, frnew);
+ MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, region_add);
}
++inew;
address_space_update_ioeventfds(as);
}
-static void memory_region_update_topology(void)
+static void memory_region_update_topology(MemoryRegion *mr)
{
if (memory_region_transaction_depth) {
+ memory_region_update_pending |= !mr || mr->enabled;
+ return;
+ }
+
+ if (mr && !mr->enabled) {
return;
}
+ MEMORY_LISTENER_CALL_GLOBAL(begin, Forward);
+
if (address_space_memory.root) {
address_space_update_topology(&address_space_memory);
}
if (address_space_io.root) {
address_space_update_topology(&address_space_io);
}
+
+ MEMORY_LISTENER_CALL_GLOBAL(commit, Forward);
+
+ memory_region_update_pending = false;
}
void memory_region_transaction_begin(void)
{
assert(memory_region_transaction_depth);
--memory_region_transaction_depth;
- memory_region_update_topology();
+ if (!memory_region_transaction_depth && memory_region_update_pending) {
+ memory_region_update_topology(NULL);
+ }
}
static void memory_region_destructor_none(MemoryRegion *mr)
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->ops = NULL;
mr->parent = NULL;
- mr->size = size;
+ mr->size = int128_make64(size);
+ if (size == UINT64_MAX) {
+ mr->size = int128_2_64();
+ }
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;
static bool memory_region_access_valid(MemoryRegion *mr,
target_phys_addr_t addr,
- unsigned size)
+ unsigned size,
+ bool is_write)
{
+ if (mr->ops->valid.accepts
+ && !mr->ops->valid.accepts(mr->opaque, addr, size, is_write)) {
+ return false;
+ }
+
if (!mr->ops->valid.unaligned && (addr & (size - 1))) {
return 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)) {
+ if (!memory_region_access_valid(mr, addr, size, false)) {
return -1U; /* FIXME: better signalling */
}
}
/* FIXME: support unaligned access */
- access_with_adjusted_size(addr + mr->offset, &data, size,
+ access_with_adjusted_size(addr, &data, size,
mr->ops->impl.min_access_size,
mr->ops->impl.max_access_size,
memory_region_read_accessor, mr);
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)
{
- MemoryRegion *mr = _mr;
-
- if (!memory_region_access_valid(mr, addr, size)) {
- return; /* FIXME: better signalling */
- }
-
- if (!mr->ops->write) {
- mr->ops->old_mmio.write[bitops_ffsl(size)](mr->opaque, addr, data);
- return;
+ 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();
+ }
}
-
- /* FIXME: support unaligned access */
- access_with_adjusted_size(addr + mr->offset, &data, size,
- mr->ops->impl.min_access_size,
- mr->ops->impl.max_access_size,
- 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)
+static uint64_t memory_region_dispatch_read(MemoryRegion *mr,
+ target_phys_addr_t addr,
+ unsigned size)
{
- return memory_region_read_thunk_n(mr, addr, 2);
-}
+ uint64_t ret;
-static uint32_t memory_region_read_thunk_l(void *mr, target_phys_addr_t addr)
-{
- return memory_region_read_thunk_n(mr, addr, 4);
+ ret = memory_region_dispatch_read1(mr, addr, size);
+ adjust_endianness(mr, &ret, size);
+ return ret;
}
-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)
+static void memory_region_dispatch_write(MemoryRegion *mr,
+ target_phys_addr_t addr,
+ uint64_t data,
+ unsigned size)
{
- 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,
-};
+ if (!memory_region_access_valid(mr, addr, size, true)) {
+ return; /* FIXME: better signalling */
+ }
-static CPUWriteMemoryFunc * const memory_region_write_thunk[] = {
- memory_region_write_thunk_b,
- memory_region_write_thunk_w,
- memory_region_write_thunk_l,
-};
+ adjust_endianness(mr, &data, size);
-static void memory_region_prepare_ram_addr(MemoryRegion *mr)
-{
- if (mr->backend_registered) {
+ if (!mr->ops->write) {
+ mr->ops->old_mmio.write[bitops_ffsl(size)](mr->opaque, addr, data);
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;
+ /* FIXME: support unaligned access */
+ access_with_adjusted_size(addr, &data, size,
+ mr->ops->impl.min_access_size,
+ mr->ops->impl.max_access_size,
+ memory_region_write_accessor, mr);
}
void memory_region_init_io(MemoryRegion *mr,
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->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->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->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)
uint64_t memory_region_size(MemoryRegion *mr)
{
- return mr->size;
+ if (int128_eq(mr->size, int128_2_64())) {
+ return UINT64_MAX;
+ }
+ return int128_get64(mr->size);
+}
+
+const char *memory_region_name(MemoryRegion *mr)
+{
+ return mr->name;
}
-void memory_region_set_offset(MemoryRegion *mr, target_phys_addr_t offset)
+bool memory_region_is_ram(MemoryRegion *mr)
{
- mr->offset = offset;
+ 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_log(MemoryRegion *mr, bool log, unsigned client)
uint8_t mask = 1 << client;
mr->dirty_log_mask = (mr->dirty_log_mask & ~mask) | (log * mask);
- memory_region_update_topology();
+ memory_region_update_topology(mr);
}
bool memory_region_get_dirty(MemoryRegion *mr, target_phys_addr_t addr,
- unsigned client)
+ target_phys_addr_t size, unsigned client)
{
assert(mr->terminates);
- return cpu_physical_memory_get_dirty(mr->ram_addr + addr, 1 << client);
+ return cpu_physical_memory_get_dirty(mr->ram_addr + addr, size,
+ 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(fr->addr.start,
- fr->addr.start + fr->addr.size);
+ MEMORY_LISTENER_UPDATE_REGION(fr, &address_space_memory,
+ Forward, log_sync);
}
}
}
void memory_region_set_readonly(MemoryRegion *mr, bool readonly)
{
- /* FIXME */
+ if (mr->readonly != readonly) {
+ mr->readonly = readonly;
+ memory_region_update_topology(mr);
+ }
}
void memory_region_rom_device_set_readable(MemoryRegion *mr, bool readable)
{
if (mr->readable != readable) {
mr->readable = readable;
- memory_region_update_topology();
+ memory_region_update_topology(mr);
}
}
FOR_EACH_FLAT_RANGE(fr, &address_space_memory.current_map) {
if (fr->mr == mr) {
- qemu_unregister_coalesced_mmio(fr->addr.start, fr->addr.size);
+ qemu_unregister_coalesced_mmio(int128_get64(fr->addr.start),
+ int128_get64(fr->addr.size));
QTAILQ_FOREACH(cmr, &mr->coalesced, link) {
tmp = addrrange_shift(cmr->addr,
- fr->addr.start - fr->offset_in_region);
+ int128_sub(fr->addr.start,
+ int128_make64(fr->offset_in_region)));
if (!addrrange_intersects(tmp, fr->addr)) {
continue;
}
tmp = addrrange_intersection(tmp, fr->addr);
- qemu_register_coalesced_mmio(tmp.start, tmp.size);
+ qemu_register_coalesced_mmio(int128_get64(tmp.start),
+ int128_get64(tmp.size));
}
}
}
void memory_region_set_coalescing(MemoryRegion *mr)
{
memory_region_clear_coalescing(mr);
- memory_region_add_coalescing(mr, 0, mr->size);
+ memory_region_add_coalescing(mr, 0, int128_get64(mr->size));
}
void memory_region_add_coalescing(MemoryRegion *mr,
{
CoalescedMemoryRange *cmr = g_malloc(sizeof(*cmr));
- cmr->addr = addrrange_make(offset, size);
+ cmr->addr = addrrange_make(int128_make64(offset), int128_make64(size));
QTAILQ_INSERT_TAIL(&mr->coalesced, cmr, link);
memory_region_update_coalesced_range(mr);
}
int fd)
{
MemoryRegionIoeventfd mrfd = {
- .addr.start = addr,
- .addr.size = size,
+ .addr.start = int128_make64(addr),
+ .addr.size = int128_make64(size),
.match_data = match_data,
.data = data,
.fd = fd,
memmove(&mr->ioeventfds[i+1], &mr->ioeventfds[i],
sizeof(*mr->ioeventfds) * (mr->ioeventfd_nb-1 - i));
mr->ioeventfds[i] = mrfd;
- memory_region_update_topology();
+ memory_region_update_topology(mr);
}
void memory_region_del_eventfd(MemoryRegion *mr,
int fd)
{
MemoryRegionIoeventfd mrfd = {
- .addr.start = addr,
- .addr.size = size,
+ .addr.start = int128_make64(addr),
+ .addr.size = int128_make64(size),
.match_data = match_data,
.data = data,
.fd = fd,
--mr->ioeventfd_nb;
mr->ioeventfds = g_realloc(mr->ioeventfds,
sizeof(*mr->ioeventfds)*mr->ioeventfd_nb + 1);
- memory_region_update_topology();
+ memory_region_update_topology(mr);
}
static void memory_region_add_subregion_common(MemoryRegion *mr,
if (subregion->may_overlap || other->may_overlap) {
continue;
}
- if (offset >= other->offset + other->size
- || offset + subregion->size <= other->offset) {
+ if (int128_gt(int128_make64(offset),
+ int128_add(int128_make64(other->addr), other->size))
+ || int128_le(int128_add(int128_make64(offset), subregion->size),
+ int128_make64(other->addr))) {
continue;
}
#if 0
- printf("warning: subregion collision %llx/%llx vs %llx/%llx\n",
+ printf("warning: subregion collision %llx/%llx (%s) "
+ "vs %llx/%llx (%s)\n",
(unsigned long long)offset,
- (unsigned long long)subregion->size,
- (unsigned long long)other->offset,
- (unsigned long long)other->size);
+ (unsigned long long)int128_get64(subregion->size),
+ subregion->name,
+ (unsigned long long)other->addr,
+ (unsigned long long)int128_get64(other->size),
+ other->name);
#endif
}
QTAILQ_FOREACH(other, &mr->subregions, subregions_link) {
}
QTAILQ_INSERT_TAIL(&mr->subregions, subregion, subregions_link);
done:
- memory_region_update_topology();
+ memory_region_update_topology(mr);
}
assert(subregion->parent == mr);
subregion->parent = NULL;
QTAILQ_REMOVE(&mr->subregions, subregion, subregions_link);
- memory_region_update_topology();
+ memory_region_update_topology(mr);
+}
+
+void memory_region_set_enabled(MemoryRegion *mr, bool enabled)
+{
+ if (enabled == mr->enabled) {
+ return;
+ }
+ mr->enabled = enabled;
+ memory_region_update_topology(NULL);
+}
+
+void memory_region_set_address(MemoryRegion *mr, target_phys_addr_t addr)
+{
+ MemoryRegion *parent = mr->parent;
+ unsigned priority = mr->priority;
+ bool may_overlap = mr->may_overlap;
+
+ if (addr == mr->addr || !parent) {
+ mr->addr = addr;
+ return;
+ }
+
+ memory_region_transaction_begin();
+ memory_region_del_subregion(parent, mr);
+ if (may_overlap) {
+ memory_region_add_subregion_overlap(parent, addr, mr, priority);
+ } else {
+ memory_region_add_subregion(parent, addr, mr);
+ }
+ memory_region_transaction_commit();
+}
+
+void memory_region_set_alias_offset(MemoryRegion *mr, target_phys_addr_t offset)
+{
+ target_phys_addr_t old_offset = mr->alias_offset;
+
+ assert(mr->alias);
+ mr->alias_offset = offset;
+
+ if (offset == old_offset || !mr->parent) {
+ return;
+ }
+
+ 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);
+ ret.readonly = fr->readonly;
+ 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, Forward, log_sync);
+ }
+}
+
+void memory_global_dirty_log_start(void)
+{
+ global_dirty_log = true;
+ MEMORY_LISTENER_CALL_GLOBAL(log_global_start, Forward);
+}
+
+void memory_global_dirty_log_stop(void)
+{
+ global_dirty_log = false;
+ MEMORY_LISTENER_CALL_GLOBAL(log_global_stop, Reverse);
+}
+
+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),
+ .readonly = fr->readonly,
+ };
+ listener->region_add(listener, §ion);
+ }
+}
+
+void memory_listener_register(MemoryListener *listener, MemoryRegion *filter)
+{
+ MemoryListener *other = NULL;
+
+ listener->address_space_filter = filter;
+ if (QTAILQ_EMPTY(&memory_listeners)
+ || listener->priority >= QTAILQ_LAST(&memory_listeners,
+ memory_listeners)->priority) {
+ QTAILQ_INSERT_TAIL(&memory_listeners, listener, link);
+ } else {
+ QTAILQ_FOREACH(other, &memory_listeners, link) {
+ if (listener->priority < other->priority) {
+ break;
+ }
+ }
+ QTAILQ_INSERT_BEFORE(other, listener, link);
+ }
+ listener_add_address_space(listener, &address_space_memory);
+ listener_add_address_space(listener, &address_space_io);
+}
+
+void memory_listener_unregister(MemoryListener *listener)
+{
+ QTAILQ_REMOVE(&memory_listeners, listener, link);
}
void set_system_memory_map(MemoryRegion *mr)
{
address_space_memory.root = mr;
- memory_region_update_topology();
+ memory_region_update_topology(NULL);
}
void set_system_io_map(MemoryRegion *mr)
{
address_space_io.root = mr;
- memory_region_update_topology();
+ 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 {
+ const MemoryRegion *mr;
+ bool printed;
+ QTAILQ_ENTRY(MemoryRegionList) queue;
+};
+
+typedef QTAILQ_HEAD(queue, MemoryRegionList) MemoryRegionListHead;
+
+static void mtree_print_mr(fprintf_function mon_printf, void *f,
+ const MemoryRegion *mr, unsigned int level,
+ target_phys_addr_t base,
+ MemoryRegionListHead *alias_print_queue)
+{
+ MemoryRegionList *new_ml, *ml, *next_ml;
+ MemoryRegionListHead submr_print_queue;
+ const MemoryRegion *submr;
+ unsigned int i;
+
+ if (!mr) {
+ return;
+ }
+
+ for (i = 0; i < level; i++) {
+ mon_printf(f, " ");
+ }
+
+ if (mr->alias) {
+ MemoryRegionList *ml;
+ bool found = false;
+
+ /* check if the alias is already in the queue */
+ QTAILQ_FOREACH(ml, alias_print_queue, queue) {
+ if (ml->mr == mr->alias && !ml->printed) {
+ found = true;
+ }
+ }
+
+ if (!found) {
+ ml = g_new(MemoryRegionList, 1);
+ ml->mr = mr->alias;
+ ml->printed = false;
+ QTAILQ_INSERT_TAIL(alias_print_queue, ml, queue);
+ }
+ mon_printf(f, TARGET_FMT_plx "-" TARGET_FMT_plx
+ " (prio %d, %c%c): alias %s @%s " TARGET_FMT_plx
+ "-" TARGET_FMT_plx "\n",
+ base + mr->addr,
+ base + mr->addr
+ + (target_phys_addr_t)int128_get64(mr->size) - 1,
+ mr->priority,
+ mr->readable ? 'R' : '-',
+ !mr->readonly && !(mr->rom_device && mr->readable) ? 'W'
+ : '-',
+ mr->name,
+ mr->alias->name,
+ mr->alias_offset,
+ mr->alias_offset
+ + (target_phys_addr_t)int128_get64(mr->size) - 1);
+ } else {
+ mon_printf(f,
+ TARGET_FMT_plx "-" TARGET_FMT_plx " (prio %d, %c%c): %s\n",
+ base + mr->addr,
+ base + mr->addr
+ + (target_phys_addr_t)int128_get64(mr->size) - 1,
+ mr->priority,
+ mr->readable ? 'R' : '-',
+ !mr->readonly && !(mr->rom_device && mr->readable) ? 'W'
+ : '-',
+ mr->name);
+ }
+
+ QTAILQ_INIT(&submr_print_queue);
+
+ QTAILQ_FOREACH(submr, &mr->subregions, subregions_link) {
+ new_ml = g_new(MemoryRegionList, 1);
+ new_ml->mr = submr;
+ QTAILQ_FOREACH(ml, &submr_print_queue, queue) {
+ if (new_ml->mr->addr < ml->mr->addr ||
+ (new_ml->mr->addr == ml->mr->addr &&
+ new_ml->mr->priority > ml->mr->priority)) {
+ QTAILQ_INSERT_BEFORE(ml, new_ml, queue);
+ new_ml = NULL;
+ break;
+ }
+ }
+ if (new_ml) {
+ QTAILQ_INSERT_TAIL(&submr_print_queue, new_ml, queue);
+ }
+ }
+
+ QTAILQ_FOREACH(ml, &submr_print_queue, queue) {
+ mtree_print_mr(mon_printf, f, ml->mr, level + 1, base + mr->addr,
+ alias_print_queue);
+ }
+
+ QTAILQ_FOREACH_SAFE(ml, &submr_print_queue, queue, next_ml) {
+ g_free(ml);
+ }
+}
+
+void mtree_info(fprintf_function mon_printf, void *f)
+{
+ MemoryRegionListHead ml_head;
+ MemoryRegionList *ml, *ml2;
+
+ QTAILQ_INIT(&ml_head);
+
+ mon_printf(f, "memory\n");
+ mtree_print_mr(mon_printf, f, address_space_memory.root, 0, 0, &ml_head);
+
+ /* print aliased regions */
+ QTAILQ_FOREACH(ml, &ml_head, queue) {
+ if (!ml->printed) {
+ mon_printf(f, "%s\n", ml->mr->name);
+ mtree_print_mr(mon_printf, f, ml->mr, 0, 0, &ml_head);
+ }
+ }
+
+ QTAILQ_FOREACH_SAFE(ml, &ml_head, queue, ml2) {
+ g_free(ml);
+ }
+
+ if (address_space_io.root &&
+ !QTAILQ_EMPTY(&address_space_io.root->subregions)) {
+ QTAILQ_INIT(&ml_head);
+ mon_printf(f, "I/O\n");
+ mtree_print_mr(mon_printf, f, address_space_io.root, 0, 0, &ml_head);
+ }
}
projects / qemu.git / blobdiff