+++ /dev/null
-/*
- * Physical memory management
- *
- * Copyright 2011 Red Hat, Inc. and/or its affiliates
- *
- * Authors:
- * Avi Kivity <avi@redhat.com>
- *
- * 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 "qemu/osdep.h"
-#include "qapi/error.h"
-#include "cpu.h"
-#include "exec/memory.h"
-#include "exec/address-spaces.h"
-#include "qapi/visitor.h"
-#include "qemu/bitops.h"
-#include "qemu/error-report.h"
-#include "qemu/main-loop.h"
-#include "qemu/qemu-print.h"
-#include "qom/object.h"
-#include "trace-root.h"
-
-#include "exec/memory-internal.h"
-#include "exec/ram_addr.h"
-#include "sysemu/kvm.h"
-#include "sysemu/runstate.h"
-#include "sysemu/tcg.h"
-#include "sysemu/accel.h"
-#include "hw/boards.h"
-#include "migration/vmstate.h"
-
-//#define DEBUG_UNASSIGNED
-
-static unsigned memory_region_transaction_depth;
-static bool memory_region_update_pending;
-static bool ioeventfd_update_pending;
-bool global_dirty_log;
-
-static QTAILQ_HEAD(, MemoryListener) memory_listeners
- = QTAILQ_HEAD_INITIALIZER(memory_listeners);
-
-static QTAILQ_HEAD(, AddressSpace) address_spaces
- = QTAILQ_HEAD_INITIALIZER(address_spaces);
-
-static GHashTable *flat_views;
-
-typedef struct AddrRange AddrRange;
-
-/*
- * Note that signed integers are needed for negative offsetting in aliases
- * (large MemoryRegion::alias_offset).
- */
-struct AddrRange {
- Int128 start;
- Int128 size;
-};
-
-static AddrRange addrrange_make(Int128 start, Int128 size)
-{
- return (AddrRange) { start, size };
-}
-
-static bool addrrange_equal(AddrRange r1, AddrRange r2)
-{
- return int128_eq(r1.start, r2.start) && int128_eq(r1.size, r2.size);
-}
-
-static Int128 addrrange_end(AddrRange r)
-{
- return int128_add(r.start, r.size);
-}
-
-static AddrRange addrrange_shift(AddrRange range, Int128 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 addrrange_contains(r1, r2.start)
- || addrrange_contains(r2, r1.start);
-}
-
-static AddrRange addrrange_intersection(AddrRange r1, AddrRange r2)
-{
- 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 };
-
-#define MEMORY_LISTENER_CALL_GLOBAL(_callback, _direction, _args...) \
- do { \
- MemoryListener *_listener; \
- \
- switch (_direction) { \
- case Forward: \
- QTAILQ_FOREACH(_listener, &memory_listeners, link) { \
- if (_listener->_callback) { \
- _listener->_callback(_listener, ##_args); \
- } \
- } \
- break; \
- case Reverse: \
- QTAILQ_FOREACH_REVERSE(_listener, &memory_listeners, link) { \
- if (_listener->_callback) { \
- _listener->_callback(_listener, ##_args); \
- } \
- } \
- break; \
- default: \
- abort(); \
- } \
- } while (0)
-
-#define MEMORY_LISTENER_CALL(_as, _callback, _direction, _section, _args...) \
- do { \
- MemoryListener *_listener; \
- \
- switch (_direction) { \
- case Forward: \
- QTAILQ_FOREACH(_listener, &(_as)->listeners, link_as) { \
- if (_listener->_callback) { \
- _listener->_callback(_listener, _section, ##_args); \
- } \
- } \
- break; \
- case Reverse: \
- QTAILQ_FOREACH_REVERSE(_listener, &(_as)->listeners, link_as) { \
- if (_listener->_callback) { \
- _listener->_callback(_listener, _section, ##_args); \
- } \
- } \
- break; \
- default: \
- abort(); \
- } \
- } while (0)
-
-/* No need to ref/unref .mr, the FlatRange keeps it alive. */
-#define MEMORY_LISTENER_UPDATE_REGION(fr, as, dir, callback, _args...) \
- do { \
- MemoryRegionSection mrs = section_from_flat_range(fr, \
- address_space_to_flatview(as)); \
- MEMORY_LISTENER_CALL(as, callback, dir, &mrs, ##_args); \
- } while(0)
-
-struct CoalescedMemoryRange {
- AddrRange addr;
- QTAILQ_ENTRY(CoalescedMemoryRange) link;
-};
-
-struct MemoryRegionIoeventfd {
- AddrRange addr;
- bool match_data;
- uint64_t data;
- EventNotifier *e;
-};
-
-static bool memory_region_ioeventfd_before(MemoryRegionIoeventfd *a,
- MemoryRegionIoeventfd *b)
-{
- if (int128_lt(a->addr.start, b->addr.start)) {
- return true;
- } else if (int128_gt(a->addr.start, b->addr.start)) {
- return false;
- } else if (int128_lt(a->addr.size, b->addr.size)) {
- return true;
- } else if (int128_gt(a->addr.size, b->addr.size)) {
- return false;
- } else if (a->match_data < b->match_data) {
- return true;
- } else if (a->match_data > b->match_data) {
- return false;
- } else if (a->match_data) {
- if (a->data < b->data) {
- return true;
- } else if (a->data > b->data) {
- return false;
- }
- }
- if (a->e < b->e) {
- return true;
- } else if (a->e > b->e) {
- return false;
- }
- return false;
-}
-
-static bool memory_region_ioeventfd_equal(MemoryRegionIoeventfd *a,
- MemoryRegionIoeventfd *b)
-{
- return !memory_region_ioeventfd_before(a, b)
- && !memory_region_ioeventfd_before(b, a);
-}
-
-/* Range of memory in the global map. Addresses are absolute. */
-struct FlatRange {
- MemoryRegion *mr;
- hwaddr offset_in_region;
- AddrRange addr;
- uint8_t dirty_log_mask;
- bool romd_mode;
- bool readonly;
- bool nonvolatile;
-};
-
-#define FOR_EACH_FLAT_RANGE(var, view) \
- for (var = (view)->ranges; var < (view)->ranges + (view)->nr; ++var)
-
-static inline MemoryRegionSection
-section_from_flat_range(FlatRange *fr, FlatView *fv)
-{
- return (MemoryRegionSection) {
- .mr = fr->mr,
- .fv = fv,
- .offset_within_region = fr->offset_in_region,
- .size = fr->addr.size,
- .offset_within_address_space = int128_get64(fr->addr.start),
- .readonly = fr->readonly,
- .nonvolatile = fr->nonvolatile,
- };
-}
-
-static bool flatrange_equal(FlatRange *a, FlatRange *b)
-{
- return a->mr == b->mr
- && addrrange_equal(a->addr, b->addr)
- && a->offset_in_region == b->offset_in_region
- && a->romd_mode == b->romd_mode
- && a->readonly == b->readonly
- && a->nonvolatile == b->nonvolatile;
-}
-
-static FlatView *flatview_new(MemoryRegion *mr_root)
-{
- FlatView *view;
-
- view = g_new0(FlatView, 1);
- view->ref = 1;
- view->root = mr_root;
- memory_region_ref(mr_root);
- trace_flatview_new(view, mr_root);
-
- return view;
-}
-
-/* Insert a range into a given position. Caller is responsible for maintaining
- * sorting order.
- */
-static void flatview_insert(FlatView *view, unsigned pos, FlatRange *range)
-{
- if (view->nr == view->nr_allocated) {
- view->nr_allocated = MAX(2 * view->nr, 10);
- view->ranges = g_realloc(view->ranges,
- view->nr_allocated * sizeof(*view->ranges));
- }
- memmove(view->ranges + pos + 1, view->ranges + pos,
- (view->nr - pos) * sizeof(FlatRange));
- view->ranges[pos] = *range;
- memory_region_ref(range->mr);
- ++view->nr;
-}
-
-static void flatview_destroy(FlatView *view)
-{
- int i;
-
- trace_flatview_destroy(view, view->root);
- if (view->dispatch) {
- address_space_dispatch_free(view->dispatch);
- }
- for (i = 0; i < view->nr; i++) {
- memory_region_unref(view->ranges[i].mr);
- }
- g_free(view->ranges);
- memory_region_unref(view->root);
- g_free(view);
-}
-
-static bool flatview_ref(FlatView *view)
-{
- return atomic_fetch_inc_nonzero(&view->ref) > 0;
-}
-
-void flatview_unref(FlatView *view)
-{
- if (atomic_fetch_dec(&view->ref) == 1) {
- trace_flatview_destroy_rcu(view, view->root);
- assert(view->root);
- call_rcu(view, flatview_destroy, rcu);
- }
-}
-
-static bool can_merge(FlatRange *r1, FlatRange *r2)
-{
- return int128_eq(addrrange_end(r1->addr), r2->addr.start)
- && r1->mr == r2->mr
- && 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->romd_mode == r2->romd_mode
- && r1->readonly == r2->readonly
- && r1->nonvolatile == r2->nonvolatile;
-}
-
-/* Attempt to simplify a view by merging adjacent ranges */
-static void flatview_simplify(FlatView *view)
-{
- unsigned i, j, k;
-
- i = 0;
- while (i < view->nr) {
- j = i + 1;
- while (j < view->nr
- && can_merge(&view->ranges[j-1], &view->ranges[j])) {
- int128_addto(&view->ranges[i].addr.size, view->ranges[j].addr.size);
- ++j;
- }
- ++i;
- for (k = i; k < j; k++) {
- memory_region_unref(view->ranges[k].mr);
- }
- memmove(&view->ranges[i], &view->ranges[j],
- (view->nr - j) * sizeof(view->ranges[j]));
- view->nr -= j - i;
- }
-}
-
-static bool memory_region_big_endian(MemoryRegion *mr)
-{
-#ifdef TARGET_WORDS_BIGENDIAN
- return mr->ops->endianness != DEVICE_LITTLE_ENDIAN;
-#else
- return mr->ops->endianness == DEVICE_BIG_ENDIAN;
-#endif
-}
-
-static void adjust_endianness(MemoryRegion *mr, uint64_t *data, MemOp op)
-{
- if ((op & MO_BSWAP) != devend_memop(mr->ops->endianness)) {
- switch (op & MO_SIZE) {
- case MO_8:
- break;
- case MO_16:
- *data = bswap16(*data);
- break;
- case MO_32:
- *data = bswap32(*data);
- break;
- case MO_64:
- *data = bswap64(*data);
- break;
- default:
- g_assert_not_reached();
- }
- }
-}
-
-static inline void memory_region_shift_read_access(uint64_t *value,
- signed shift,
- uint64_t mask,
- uint64_t tmp)
-{
- if (shift >= 0) {
- *value |= (tmp & mask) << shift;
- } else {
- *value |= (tmp & mask) >> -shift;
- }
-}
-
-static inline uint64_t memory_region_shift_write_access(uint64_t *value,
- signed shift,
- uint64_t mask)
-{
- uint64_t tmp;
-
- if (shift >= 0) {
- tmp = (*value >> shift) & mask;
- } else {
- tmp = (*value << -shift) & mask;
- }
-
- return tmp;
-}
-
-static hwaddr memory_region_to_absolute_addr(MemoryRegion *mr, hwaddr offset)
-{
- MemoryRegion *root;
- hwaddr abs_addr = offset;
-
- abs_addr += mr->addr;
- for (root = mr; root->container; ) {
- root = root->container;
- abs_addr += root->addr;
- }
-
- return abs_addr;
-}
-
-static int get_cpu_index(void)
-{
- if (current_cpu) {
- return current_cpu->cpu_index;
- }
- return -1;
-}
-
-static MemTxResult memory_region_read_accessor(MemoryRegion *mr,
- hwaddr addr,
- uint64_t *value,
- unsigned size,
- signed shift,
- uint64_t mask,
- MemTxAttrs attrs)
-{
- uint64_t tmp;
-
- tmp = mr->ops->read(mr->opaque, addr, size);
- if (mr->subpage) {
- trace_memory_region_subpage_read(get_cpu_index(), mr, addr, tmp, size);
- } else if (TRACE_MEMORY_REGION_OPS_READ_ENABLED) {
- hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr);
- trace_memory_region_ops_read(get_cpu_index(), mr, abs_addr, tmp, size);
- }
- memory_region_shift_read_access(value, shift, mask, tmp);
- return MEMTX_OK;
-}
-
-static MemTxResult memory_region_read_with_attrs_accessor(MemoryRegion *mr,
- hwaddr addr,
- uint64_t *value,
- unsigned size,
- signed shift,
- uint64_t mask,
- MemTxAttrs attrs)
-{
- uint64_t tmp = 0;
- MemTxResult r;
-
- r = mr->ops->read_with_attrs(mr->opaque, addr, &tmp, size, attrs);
- if (mr->subpage) {
- trace_memory_region_subpage_read(get_cpu_index(), mr, addr, tmp, size);
- } else if (TRACE_MEMORY_REGION_OPS_READ_ENABLED) {
- hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr);
- trace_memory_region_ops_read(get_cpu_index(), mr, abs_addr, tmp, size);
- }
- memory_region_shift_read_access(value, shift, mask, tmp);
- return r;
-}
-
-static MemTxResult memory_region_write_accessor(MemoryRegion *mr,
- hwaddr addr,
- uint64_t *value,
- unsigned size,
- signed shift,
- uint64_t mask,
- MemTxAttrs attrs)
-{
- uint64_t tmp = memory_region_shift_write_access(value, shift, mask);
-
- if (mr->subpage) {
- trace_memory_region_subpage_write(get_cpu_index(), mr, addr, tmp, size);
- } else if (TRACE_MEMORY_REGION_OPS_WRITE_ENABLED) {
- hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr);
- trace_memory_region_ops_write(get_cpu_index(), mr, abs_addr, tmp, size);
- }
- mr->ops->write(mr->opaque, addr, tmp, size);
- return MEMTX_OK;
-}
-
-static MemTxResult memory_region_write_with_attrs_accessor(MemoryRegion *mr,
- hwaddr addr,
- uint64_t *value,
- unsigned size,
- signed shift,
- uint64_t mask,
- MemTxAttrs attrs)
-{
- uint64_t tmp = memory_region_shift_write_access(value, shift, mask);
-
- if (mr->subpage) {
- trace_memory_region_subpage_write(get_cpu_index(), mr, addr, tmp, size);
- } else if (TRACE_MEMORY_REGION_OPS_WRITE_ENABLED) {
- hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr);
- trace_memory_region_ops_write(get_cpu_index(), mr, abs_addr, tmp, size);
- }
- return mr->ops->write_with_attrs(mr->opaque, addr, tmp, size, attrs);
-}
-
-static MemTxResult access_with_adjusted_size(hwaddr addr,
- uint64_t *value,
- unsigned size,
- unsigned access_size_min,
- unsigned access_size_max,
- MemTxResult (*access_fn)
- (MemoryRegion *mr,
- hwaddr addr,
- uint64_t *value,
- unsigned size,
- signed shift,
- uint64_t mask,
- MemTxAttrs attrs),
- MemoryRegion *mr,
- MemTxAttrs attrs)
-{
- uint64_t access_mask;
- unsigned access_size;
- unsigned i;
- MemTxResult r = MEMTX_OK;
-
- if (!access_size_min) {
- access_size_min = 1;
- }
- if (!access_size_max) {
- access_size_max = 4;
- }
-
- /* FIXME: support unaligned access? */
- access_size = MAX(MIN(size, access_size_max), access_size_min);
- access_mask = MAKE_64BIT_MASK(0, access_size * 8);
- if (memory_region_big_endian(mr)) {
- for (i = 0; i < size; i += access_size) {
- r |= access_fn(mr, addr + i, value, access_size,
- (size - access_size - i) * 8, access_mask, attrs);
- }
- } else {
- for (i = 0; i < size; i += access_size) {
- r |= access_fn(mr, addr + i, value, access_size, i * 8,
- access_mask, attrs);
- }
- }
- return r;
-}
-
-static AddressSpace *memory_region_to_address_space(MemoryRegion *mr)
-{
- AddressSpace *as;
-
- while (mr->container) {
- mr = mr->container;
- }
- QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
- if (mr == as->root) {
- return as;
- }
- }
- return NULL;
-}
-
-/* Render a memory region into the global view. Ranges in @view obscure
- * ranges in @mr.
- */
-static void render_memory_region(FlatView *view,
- MemoryRegion *mr,
- Int128 base,
- AddrRange clip,
- bool readonly,
- bool nonvolatile)
-{
- MemoryRegion *subregion;
- unsigned i;
- hwaddr offset_in_region;
- Int128 remain;
- Int128 now;
- FlatRange fr;
- AddrRange tmp;
-
- if (!mr->enabled) {
- return;
- }
-
- int128_addto(&base, int128_make64(mr->addr));
- readonly |= mr->readonly;
- nonvolatile |= mr->nonvolatile;
-
- tmp = addrrange_make(base, mr->size);
-
- if (!addrrange_intersects(tmp, clip)) {
- return;
- }
-
- clip = addrrange_intersection(tmp, clip);
-
- if (mr->alias) {
- 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, nonvolatile);
- return;
- }
-
- /* Render subregions in priority order. */
- QTAILQ_FOREACH(subregion, &mr->subregions, subregions_link) {
- render_memory_region(view, subregion, base, clip,
- readonly, nonvolatile);
- }
-
- if (!mr->terminates) {
- return;
- }
-
- offset_in_region = int128_get64(int128_sub(clip.start, base));
- base = clip.start;
- remain = clip.size;
-
- fr.mr = mr;
- fr.dirty_log_mask = memory_region_get_dirty_log_mask(mr);
- fr.romd_mode = mr->romd_mode;
- fr.readonly = readonly;
- fr.nonvolatile = nonvolatile;
-
- /* Render the region itself into any gaps left by the current view. */
- for (i = 0; i < view->nr && int128_nz(remain); ++i) {
- if (int128_ge(base, addrrange_end(view->ranges[i].addr))) {
- continue;
- }
- if (int128_lt(base, view->ranges[i].addr.start)) {
- now = int128_min(remain,
- int128_sub(view->ranges[i].addr.start, base));
- fr.offset_in_region = offset_in_region;
- fr.addr = addrrange_make(base, now);
- flatview_insert(view, i, &fr);
- ++i;
- int128_addto(&base, now);
- offset_in_region += int128_get64(now);
- int128_subfrom(&remain, now);
- }
- now = int128_sub(int128_min(int128_add(base, remain),
- addrrange_end(view->ranges[i].addr)),
- base);
- int128_addto(&base, now);
- offset_in_region += int128_get64(now);
- int128_subfrom(&remain, now);
- }
- if (int128_nz(remain)) {
- fr.offset_in_region = offset_in_region;
- fr.addr = addrrange_make(base, remain);
- flatview_insert(view, i, &fr);
- }
-}
-
-static MemoryRegion *memory_region_get_flatview_root(MemoryRegion *mr)
-{
- while (mr->enabled) {
- if (mr->alias) {
- if (!mr->alias_offset && int128_ge(mr->size, mr->alias->size)) {
- /* The alias is included in its entirety. Use it as
- * the "real" root, so that we can share more FlatViews.
- */
- mr = mr->alias;
- continue;
- }
- } else if (!mr->terminates) {
- unsigned int found = 0;
- MemoryRegion *child, *next = NULL;
- QTAILQ_FOREACH(child, &mr->subregions, subregions_link) {
- if (child->enabled) {
- if (++found > 1) {
- next = NULL;
- break;
- }
- if (!child->addr && int128_ge(mr->size, child->size)) {
- /* A child is included in its entirety. If it's the only
- * enabled one, use it in the hope of finding an alias down the
- * way. This will also let us share FlatViews.
- */
- next = child;
- }
- }
- }
- if (found == 0) {
- return NULL;
- }
- if (next) {
- mr = next;
- continue;
- }
- }
-
- return mr;
- }
-
- return NULL;
-}
-
-/* Render a memory topology into a list of disjoint absolute ranges. */
-static FlatView *generate_memory_topology(MemoryRegion *mr)
-{
- int i;
- FlatView *view;
-
- view = flatview_new(mr);
-
- if (mr) {
- render_memory_region(view, mr, int128_zero(),
- addrrange_make(int128_zero(), int128_2_64()),
- false, false);
- }
- flatview_simplify(view);
-
- view->dispatch = address_space_dispatch_new(view);
- for (i = 0; i < view->nr; i++) {
- MemoryRegionSection mrs =
- section_from_flat_range(&view->ranges[i], view);
- flatview_add_to_dispatch(view, &mrs);
- }
- address_space_dispatch_compact(view->dispatch);
- g_hash_table_replace(flat_views, mr, view);
-
- return view;
-}
-
-static void address_space_add_del_ioeventfds(AddressSpace *as,
- MemoryRegionIoeventfd *fds_new,
- unsigned fds_new_nb,
- MemoryRegionIoeventfd *fds_old,
- 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.
- */
-
- iold = inew = 0;
- while (iold < fds_old_nb || inew < fds_new_nb) {
- if (iold < fds_old_nb
- && (inew == fds_new_nb
- || memory_region_ioeventfd_before(&fds_old[iold],
- &fds_new[inew]))) {
- fd = &fds_old[iold];
- section = (MemoryRegionSection) {
- .fv = address_space_to_flatview(as),
- .offset_within_address_space = int128_get64(fd->addr.start),
- .size = fd->addr.size,
- };
- MEMORY_LISTENER_CALL(as, eventfd_del, Forward, §ion,
- fd->match_data, fd->data, fd->e);
- ++iold;
- } else if (inew < fds_new_nb
- && (iold == fds_old_nb
- || memory_region_ioeventfd_before(&fds_new[inew],
- &fds_old[iold]))) {
- fd = &fds_new[inew];
- section = (MemoryRegionSection) {
- .fv = address_space_to_flatview(as),
- .offset_within_address_space = int128_get64(fd->addr.start),
- .size = fd->addr.size,
- };
- MEMORY_LISTENER_CALL(as, eventfd_add, Reverse, §ion,
- fd->match_data, fd->data, fd->e);
- ++inew;
- } else {
- ++iold;
- ++inew;
- }
- }
-}
-
-FlatView *address_space_get_flatview(AddressSpace *as)
-{
- FlatView *view;
-
- RCU_READ_LOCK_GUARD();
- do {
- view = address_space_to_flatview(as);
- /* If somebody has replaced as->current_map concurrently,
- * flatview_ref returns false.
- */
- } while (!flatview_ref(view));
- return view;
-}
-
-static void address_space_update_ioeventfds(AddressSpace *as)
-{
- FlatView *view;
- FlatRange *fr;
- unsigned ioeventfd_nb = 0;
- MemoryRegionIoeventfd *ioeventfds = NULL;
- AddrRange tmp;
- unsigned i;
-
- view = address_space_get_flatview(as);
- FOR_EACH_FLAT_RANGE(fr, view) {
- for (i = 0; i < fr->mr->ioeventfd_nb; ++i) {
- tmp = addrrange_shift(fr->mr->ioeventfds[i].addr,
- int128_sub(fr->addr.start,
- int128_make64(fr->offset_in_region)));
- if (addrrange_intersects(fr->addr, tmp)) {
- ++ioeventfd_nb;
- ioeventfds = g_realloc(ioeventfds,
- ioeventfd_nb * sizeof(*ioeventfds));
- ioeventfds[ioeventfd_nb-1] = fr->mr->ioeventfds[i];
- ioeventfds[ioeventfd_nb-1].addr = tmp;
- }
- }
- }
-
- address_space_add_del_ioeventfds(as, ioeventfds, ioeventfd_nb,
- as->ioeventfds, as->ioeventfd_nb);
-
- g_free(as->ioeventfds);
- as->ioeventfds = ioeventfds;
- as->ioeventfd_nb = ioeventfd_nb;
- flatview_unref(view);
-}
-
-/*
- * Notify the memory listeners about the coalesced IO change events of
- * range `cmr'. Only the part that has intersection of the specified
- * FlatRange will be sent.
- */
-static void flat_range_coalesced_io_notify(FlatRange *fr, AddressSpace *as,
- CoalescedMemoryRange *cmr, bool add)
-{
- AddrRange tmp;
-
- tmp = addrrange_shift(cmr->addr,
- int128_sub(fr->addr.start,
- int128_make64(fr->offset_in_region)));
- if (!addrrange_intersects(tmp, fr->addr)) {
- return;
- }
- tmp = addrrange_intersection(tmp, fr->addr);
-
- if (add) {
- MEMORY_LISTENER_UPDATE_REGION(fr, as, Forward, coalesced_io_add,
- int128_get64(tmp.start),
- int128_get64(tmp.size));
- } else {
- MEMORY_LISTENER_UPDATE_REGION(fr, as, Reverse, coalesced_io_del,
- int128_get64(tmp.start),
- int128_get64(tmp.size));
- }
-}
-
-static void flat_range_coalesced_io_del(FlatRange *fr, AddressSpace *as)
-{
- CoalescedMemoryRange *cmr;
-
- QTAILQ_FOREACH(cmr, &fr->mr->coalesced, link) {
- flat_range_coalesced_io_notify(fr, as, cmr, false);
- }
-}
-
-static void flat_range_coalesced_io_add(FlatRange *fr, AddressSpace *as)
-{
- MemoryRegion *mr = fr->mr;
- CoalescedMemoryRange *cmr;
-
- if (QTAILQ_EMPTY(&mr->coalesced)) {
- return;
- }
-
- QTAILQ_FOREACH(cmr, &mr->coalesced, link) {
- flat_range_coalesced_io_notify(fr, as, cmr, true);
- }
-}
-
-static void address_space_update_topology_pass(AddressSpace *as,
- const FlatView *old_view,
- const FlatView *new_view,
- bool adding)
-{
- unsigned iold, inew;
- FlatRange *frold, *frnew;
-
- /* Generate a symmetric difference of the old and new memory maps.
- * Kill ranges in the old map, and instantiate ranges in the new map.
- */
- iold = inew = 0;
- while (iold < old_view->nr || inew < new_view->nr) {
- if (iold < old_view->nr) {
- frold = &old_view->ranges[iold];
- } else {
- frold = NULL;
- }
- if (inew < new_view->nr) {
- frnew = &new_view->ranges[inew];
- } else {
- frnew = NULL;
- }
-
- if (frold
- && (!frnew
- || 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 both but attributes changed. */
-
- if (!adding) {
- flat_range_coalesced_io_del(frold, as);
- MEMORY_LISTENER_UPDATE_REGION(frold, as, Reverse, region_del);
- }
-
- ++iold;
- } else if (frold && frnew && flatrange_equal(frold, frnew)) {
- /* In both and unchanged (except logging may have changed) */
-
- if (adding) {
- MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, region_nop);
- if (frnew->dirty_log_mask & ~frold->dirty_log_mask) {
- MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, log_start,
- frold->dirty_log_mask,
- frnew->dirty_log_mask);
- }
- if (frold->dirty_log_mask & ~frnew->dirty_log_mask) {
- MEMORY_LISTENER_UPDATE_REGION(frnew, as, Reverse, log_stop,
- frold->dirty_log_mask,
- frnew->dirty_log_mask);
- }
- }
-
- ++iold;
- ++inew;
- } else {
- /* In new */
-
- if (adding) {
- MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, region_add);
- flat_range_coalesced_io_add(frnew, as);
- }
-
- ++inew;
- }
- }
-}
-
-static void flatviews_init(void)
-{
- static FlatView *empty_view;
-
- if (flat_views) {
- return;
- }
-
- flat_views = g_hash_table_new_full(g_direct_hash, g_direct_equal, NULL,
- (GDestroyNotify) flatview_unref);
- if (!empty_view) {
- empty_view = generate_memory_topology(NULL);
- /* We keep it alive forever in the global variable. */
- flatview_ref(empty_view);
- } else {
- g_hash_table_replace(flat_views, NULL, empty_view);
- flatview_ref(empty_view);
- }
-}
-
-static void flatviews_reset(void)
-{
- AddressSpace *as;
-
- if (flat_views) {
- g_hash_table_unref(flat_views);
- flat_views = NULL;
- }
- flatviews_init();
-
- /* Render unique FVs */
- QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
- MemoryRegion *physmr = memory_region_get_flatview_root(as->root);
-
- if (g_hash_table_lookup(flat_views, physmr)) {
- continue;
- }
-
- generate_memory_topology(physmr);
- }
-}
-
-static void address_space_set_flatview(AddressSpace *as)
-{
- FlatView *old_view = address_space_to_flatview(as);
- MemoryRegion *physmr = memory_region_get_flatview_root(as->root);
- FlatView *new_view = g_hash_table_lookup(flat_views, physmr);
-
- assert(new_view);
-
- if (old_view == new_view) {
- return;
- }
-
- if (old_view) {
- flatview_ref(old_view);
- }
-
- flatview_ref(new_view);
-
- if (!QTAILQ_EMPTY(&as->listeners)) {
- FlatView tmpview = { .nr = 0 }, *old_view2 = old_view;
-
- if (!old_view2) {
- old_view2 = &tmpview;
- }
- address_space_update_topology_pass(as, old_view2, new_view, false);
- address_space_update_topology_pass(as, old_view2, new_view, true);
- }
-
- /* Writes are protected by the BQL. */
- atomic_rcu_set(&as->current_map, new_view);
- if (old_view) {
- flatview_unref(old_view);
- }
-
- /* Note that all the old MemoryRegions are still alive up to this
- * point. This relieves most MemoryListeners from the need to
- * ref/unref the MemoryRegions they get---unless they use them
- * outside the iothread mutex, in which case precise reference
- * counting is necessary.
- */
- if (old_view) {
- flatview_unref(old_view);
- }
-}
-
-static void address_space_update_topology(AddressSpace *as)
-{
- MemoryRegion *physmr = memory_region_get_flatview_root(as->root);
-
- flatviews_init();
- if (!g_hash_table_lookup(flat_views, physmr)) {
- generate_memory_topology(physmr);
- }
- address_space_set_flatview(as);
-}
-
-void memory_region_transaction_begin(void)
-{
- qemu_flush_coalesced_mmio_buffer();
- ++memory_region_transaction_depth;
-}
-
-void memory_region_transaction_commit(void)
-{
- AddressSpace *as;
-
- assert(memory_region_transaction_depth);
- assert(qemu_mutex_iothread_locked());
-
- --memory_region_transaction_depth;
- if (!memory_region_transaction_depth) {
- if (memory_region_update_pending) {
- flatviews_reset();
-
- MEMORY_LISTENER_CALL_GLOBAL(begin, Forward);
-
- QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
- address_space_set_flatview(as);
- address_space_update_ioeventfds(as);
- }
- memory_region_update_pending = false;
- ioeventfd_update_pending = false;
- MEMORY_LISTENER_CALL_GLOBAL(commit, Forward);
- } else if (ioeventfd_update_pending) {
- QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
- address_space_update_ioeventfds(as);
- }
- ioeventfd_update_pending = false;
- }
- }
-}
-
-static void memory_region_destructor_none(MemoryRegion *mr)
-{
-}
-
-static void memory_region_destructor_ram(MemoryRegion *mr)
-{
- qemu_ram_free(mr->ram_block);
-}
-
-static bool memory_region_need_escape(char c)
-{
- return c == '/' || c == '[' || c == '\\' || c == ']';
-}
-
-static char *memory_region_escape_name(const char *name)
-{
- const char *p;
- char *escaped, *q;
- uint8_t c;
- size_t bytes = 0;
-
- for (p = name; *p; p++) {
- bytes += memory_region_need_escape(*p) ? 4 : 1;
- }
- if (bytes == p - name) {
- return g_memdup(name, bytes + 1);
- }
-
- escaped = g_malloc(bytes + 1);
- for (p = name, q = escaped; *p; p++) {
- c = *p;
- if (unlikely(memory_region_need_escape(c))) {
- *q++ = '\\';
- *q++ = 'x';
- *q++ = "0123456789abcdef"[c >> 4];
- c = "0123456789abcdef"[c & 15];
- }
- *q++ = c;
- }
- *q = 0;
- return escaped;
-}
-
-static void memory_region_do_init(MemoryRegion *mr,
- Object *owner,
- const char *name,
- uint64_t size)
-{
- mr->size = int128_make64(size);
- if (size == UINT64_MAX) {
- mr->size = int128_2_64();
- }
- mr->name = g_strdup(name);
- mr->owner = owner;
- mr->ram_block = NULL;
-
- if (name) {
- char *escaped_name = memory_region_escape_name(name);
- char *name_array = g_strdup_printf("%s[*]", escaped_name);
-
- if (!owner) {
- owner = container_get(qdev_get_machine(), "/unattached");
- }
-
- object_property_add_child(owner, name_array, OBJECT(mr), &error_abort);
- object_unref(OBJECT(mr));
- g_free(name_array);
- g_free(escaped_name);
- }
-}
-
-void memory_region_init(MemoryRegion *mr,
- Object *owner,
- const char *name,
- uint64_t size)
-{
- object_initialize(mr, sizeof(*mr), TYPE_MEMORY_REGION);
- memory_region_do_init(mr, owner, name, size);
-}
-
-static void memory_region_get_addr(Object *obj, Visitor *v, const char *name,
- void *opaque, Error **errp)
-{
- MemoryRegion *mr = MEMORY_REGION(obj);
- uint64_t value = mr->addr;
-
- visit_type_uint64(v, name, &value, errp);
-}
-
-static void memory_region_get_container(Object *obj, Visitor *v,
- const char *name, void *opaque,
- Error **errp)
-{
- MemoryRegion *mr = MEMORY_REGION(obj);
- gchar *path = (gchar *)"";
-
- if (mr->container) {
- path = object_get_canonical_path(OBJECT(mr->container));
- }
- visit_type_str(v, name, &path, errp);
- if (mr->container) {
- g_free(path);
- }
-}
-
-static Object *memory_region_resolve_container(Object *obj, void *opaque,
- const char *part)
-{
- MemoryRegion *mr = MEMORY_REGION(obj);
-
- return OBJECT(mr->container);
-}
-
-static void memory_region_get_priority(Object *obj, Visitor *v,
- const char *name, void *opaque,
- Error **errp)
-{
- MemoryRegion *mr = MEMORY_REGION(obj);
- int32_t value = mr->priority;
-
- visit_type_int32(v, name, &value, errp);
-}
-
-static void memory_region_get_size(Object *obj, Visitor *v, const char *name,
- void *opaque, Error **errp)
-{
- MemoryRegion *mr = MEMORY_REGION(obj);
- uint64_t value = memory_region_size(mr);
-
- visit_type_uint64(v, name, &value, errp);
-}
-
-static void memory_region_initfn(Object *obj)
-{
- MemoryRegion *mr = MEMORY_REGION(obj);
- ObjectProperty *op;
-
- mr->ops = &unassigned_mem_ops;
- mr->enabled = true;
- mr->romd_mode = true;
- mr->global_locking = true;
- mr->destructor = memory_region_destructor_none;
- QTAILQ_INIT(&mr->subregions);
- QTAILQ_INIT(&mr->coalesced);
-
- op = object_property_add(OBJECT(mr), "container",
- "link<" TYPE_MEMORY_REGION ">",
- memory_region_get_container,
- NULL, /* memory_region_set_container */
- NULL, NULL, &error_abort);
- op->resolve = memory_region_resolve_container;
-
- object_property_add(OBJECT(mr), "addr", "uint64",
- memory_region_get_addr,
- NULL, /* memory_region_set_addr */
- NULL, NULL, &error_abort);
- object_property_add(OBJECT(mr), "priority", "uint32",
- memory_region_get_priority,
- NULL, /* memory_region_set_priority */
- NULL, NULL, &error_abort);
- object_property_add(OBJECT(mr), "size", "uint64",
- memory_region_get_size,
- NULL, /* memory_region_set_size, */
- NULL, NULL, &error_abort);
-}
-
-static void iommu_memory_region_initfn(Object *obj)
-{
- MemoryRegion *mr = MEMORY_REGION(obj);
-
- mr->is_iommu = true;
-}
-
-static uint64_t unassigned_mem_read(void *opaque, hwaddr addr,
- unsigned size)
-{
-#ifdef DEBUG_UNASSIGNED
- printf("Unassigned mem read " TARGET_FMT_plx "\n", addr);
-#endif
- return 0;
-}
-
-static void unassigned_mem_write(void *opaque, hwaddr addr,
- uint64_t val, unsigned size)
-{
-#ifdef DEBUG_UNASSIGNED
- printf("Unassigned mem write " TARGET_FMT_plx " = 0x%"PRIx64"\n", addr, val);
-#endif
-}
-
-static bool unassigned_mem_accepts(void *opaque, hwaddr addr,
- unsigned size, bool is_write,
- MemTxAttrs attrs)
-{
- return false;
-}
-
-const MemoryRegionOps unassigned_mem_ops = {
- .valid.accepts = unassigned_mem_accepts,
- .endianness = DEVICE_NATIVE_ENDIAN,
-};
-
-static uint64_t memory_region_ram_device_read(void *opaque,
- hwaddr addr, unsigned size)
-{
- MemoryRegion *mr = opaque;
- uint64_t data = (uint64_t)~0;
-
- switch (size) {
- case 1:
- data = *(uint8_t *)(mr->ram_block->host + addr);
- break;
- case 2:
- data = *(uint16_t *)(mr->ram_block->host + addr);
- break;
- case 4:
- data = *(uint32_t *)(mr->ram_block->host + addr);
- break;
- case 8:
- data = *(uint64_t *)(mr->ram_block->host + addr);
- break;
- }
-
- trace_memory_region_ram_device_read(get_cpu_index(), mr, addr, data, size);
-
- return data;
-}
-
-static void memory_region_ram_device_write(void *opaque, hwaddr addr,
- uint64_t data, unsigned size)
-{
- MemoryRegion *mr = opaque;
-
- trace_memory_region_ram_device_write(get_cpu_index(), mr, addr, data, size);
-
- switch (size) {
- case 1:
- *(uint8_t *)(mr->ram_block->host + addr) = (uint8_t)data;
- break;
- case 2:
- *(uint16_t *)(mr->ram_block->host + addr) = (uint16_t)data;
- break;
- case 4:
- *(uint32_t *)(mr->ram_block->host + addr) = (uint32_t)data;
- break;
- case 8:
- *(uint64_t *)(mr->ram_block->host + addr) = data;
- break;
- }
-}
-
-static const MemoryRegionOps ram_device_mem_ops = {
- .read = memory_region_ram_device_read,
- .write = memory_region_ram_device_write,
- .endianness = DEVICE_HOST_ENDIAN,
- .valid = {
- .min_access_size = 1,
- .max_access_size = 8,
- .unaligned = true,
- },
- .impl = {
- .min_access_size = 1,
- .max_access_size = 8,
- .unaligned = true,
- },
-};
-
-bool memory_region_access_valid(MemoryRegion *mr,
- hwaddr addr,
- unsigned size,
- bool is_write,
- MemTxAttrs attrs)
-{
- int access_size_min, access_size_max;
- int access_size, i;
-
- if (!mr->ops->valid.unaligned && (addr & (size - 1))) {
- return false;
- }
-
- if (!mr->ops->valid.accepts) {
- return true;
- }
-
- access_size_min = mr->ops->valid.min_access_size;
- if (!mr->ops->valid.min_access_size) {
- access_size_min = 1;
- }
-
- access_size_max = mr->ops->valid.max_access_size;
- if (!mr->ops->valid.max_access_size) {
- access_size_max = 4;
- }
-
- access_size = MAX(MIN(size, access_size_max), access_size_min);
- for (i = 0; i < size; i += access_size) {
- if (!mr->ops->valid.accepts(mr->opaque, addr + i, access_size,
- is_write, attrs)) {
- return false;
- }
- }
-
- return true;
-}
-
-static MemTxResult memory_region_dispatch_read1(MemoryRegion *mr,
- hwaddr addr,
- uint64_t *pval,
- unsigned size,
- MemTxAttrs attrs)
-{
- *pval = 0;
-
- if (mr->ops->read) {
- return access_with_adjusted_size(addr, pval, size,
- mr->ops->impl.min_access_size,
- mr->ops->impl.max_access_size,
- memory_region_read_accessor,
- mr, attrs);
- } else {
- return access_with_adjusted_size(addr, pval, size,
- mr->ops->impl.min_access_size,
- mr->ops->impl.max_access_size,
- memory_region_read_with_attrs_accessor,
- mr, attrs);
- }
-}
-
-MemTxResult memory_region_dispatch_read(MemoryRegion *mr,
- hwaddr addr,
- uint64_t *pval,
- MemOp op,
- MemTxAttrs attrs)
-{
- unsigned size = memop_size(op);
- MemTxResult r;
-
- if (!memory_region_access_valid(mr, addr, size, false, attrs)) {
- *pval = unassigned_mem_read(mr, addr, size);
- return MEMTX_DECODE_ERROR;
- }
-
- r = memory_region_dispatch_read1(mr, addr, pval, size, attrs);
- adjust_endianness(mr, pval, op);
- return r;
-}
-
-/* Return true if an eventfd was signalled */
-static bool memory_region_dispatch_write_eventfds(MemoryRegion *mr,
- hwaddr addr,
- uint64_t data,
- unsigned size,
- MemTxAttrs attrs)
-{
- MemoryRegionIoeventfd ioeventfd = {
- .addr = addrrange_make(int128_make64(addr), int128_make64(size)),
- .data = data,
- };
- unsigned i;
-
- for (i = 0; i < mr->ioeventfd_nb; i++) {
- ioeventfd.match_data = mr->ioeventfds[i].match_data;
- ioeventfd.e = mr->ioeventfds[i].e;
-
- if (memory_region_ioeventfd_equal(&ioeventfd, &mr->ioeventfds[i])) {
- event_notifier_set(ioeventfd.e);
- return true;
- }
- }
-
- return false;
-}
-
-MemTxResult memory_region_dispatch_write(MemoryRegion *mr,
- hwaddr addr,
- uint64_t data,
- MemOp op,
- MemTxAttrs attrs)
-{
- unsigned size = memop_size(op);
-
- if (!memory_region_access_valid(mr, addr, size, true, attrs)) {
- unassigned_mem_write(mr, addr, data, size);
- return MEMTX_DECODE_ERROR;
- }
-
- adjust_endianness(mr, &data, op);
-
- if ((!kvm_eventfds_enabled()) &&
- memory_region_dispatch_write_eventfds(mr, addr, data, size, attrs)) {
- return MEMTX_OK;
- }
-
- if (mr->ops->write) {
- return access_with_adjusted_size(addr, &data, size,
- mr->ops->impl.min_access_size,
- mr->ops->impl.max_access_size,
- memory_region_write_accessor, mr,
- attrs);
- } else {
- return
- access_with_adjusted_size(addr, &data, size,
- mr->ops->impl.min_access_size,
- mr->ops->impl.max_access_size,
- memory_region_write_with_attrs_accessor,
- mr, attrs);
- }
-}
-
-void memory_region_init_io(MemoryRegion *mr,
- Object *owner,
- const MemoryRegionOps *ops,
- void *opaque,
- const char *name,
- uint64_t size)
-{
- memory_region_init(mr, owner, name, size);
- mr->ops = ops ? ops : &unassigned_mem_ops;
- mr->opaque = opaque;
- mr->terminates = true;
-}
-
-void memory_region_init_ram_nomigrate(MemoryRegion *mr,
- Object *owner,
- const char *name,
- uint64_t size,
- Error **errp)
-{
- memory_region_init_ram_shared_nomigrate(mr, owner, name, size, false, errp);
-}
-
-void memory_region_init_ram_shared_nomigrate(MemoryRegion *mr,
- Object *owner,
- const char *name,
- uint64_t size,
- bool share,
- Error **errp)
-{
- Error *err = NULL;
- memory_region_init(mr, owner, name, size);
- mr->ram = true;
- mr->terminates = true;
- mr->destructor = memory_region_destructor_ram;
- mr->ram_block = qemu_ram_alloc(size, share, mr, &err);
- mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
- if (err) {
- mr->size = int128_zero();
- object_unparent(OBJECT(mr));
- error_propagate(errp, err);
- }
-}
-
-void memory_region_init_resizeable_ram(MemoryRegion *mr,
- Object *owner,
- const char *name,
- uint64_t size,
- uint64_t max_size,
- void (*resized)(const char*,
- uint64_t length,
- void *host),
- Error **errp)
-{
- Error *err = NULL;
- memory_region_init(mr, owner, name, size);
- mr->ram = true;
- mr->terminates = true;
- mr->destructor = memory_region_destructor_ram;
- mr->ram_block = qemu_ram_alloc_resizeable(size, max_size, resized,
- mr, &err);
- mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
- if (err) {
- mr->size = int128_zero();
- object_unparent(OBJECT(mr));
- error_propagate(errp, err);
- }
-}
-
-#ifdef CONFIG_POSIX
-void memory_region_init_ram_from_file(MemoryRegion *mr,
- struct Object *owner,
- const char *name,
- uint64_t size,
- uint64_t align,
- uint32_t ram_flags,
- const char *path,
- Error **errp)
-{
- Error *err = NULL;
- memory_region_init(mr, owner, name, size);
- mr->ram = true;
- mr->terminates = true;
- mr->destructor = memory_region_destructor_ram;
- mr->align = align;
- mr->ram_block = qemu_ram_alloc_from_file(size, mr, ram_flags, path, &err);
- mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
- if (err) {
- mr->size = int128_zero();
- object_unparent(OBJECT(mr));
- error_propagate(errp, err);
- }
-}
-
-void memory_region_init_ram_from_fd(MemoryRegion *mr,
- struct Object *owner,
- const char *name,
- uint64_t size,
- bool share,
- int fd,
- Error **errp)
-{
- Error *err = NULL;
- memory_region_init(mr, owner, name, size);
- mr->ram = true;
- mr->terminates = true;
- mr->destructor = memory_region_destructor_ram;
- mr->ram_block = qemu_ram_alloc_from_fd(size, mr,
- share ? RAM_SHARED : 0,
- fd, &err);
- mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
- if (err) {
- mr->size = int128_zero();
- object_unparent(OBJECT(mr));
- error_propagate(errp, err);
- }
-}
-#endif
-
-void memory_region_init_ram_ptr(MemoryRegion *mr,
- Object *owner,
- const char *name,
- uint64_t size,
- void *ptr)
-{
- memory_region_init(mr, owner, name, size);
- mr->ram = true;
- mr->terminates = true;
- mr->destructor = memory_region_destructor_ram;
- mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
-
- /* qemu_ram_alloc_from_ptr cannot fail with ptr != NULL. */
- assert(ptr != NULL);
- mr->ram_block = qemu_ram_alloc_from_ptr(size, ptr, mr, &error_fatal);
-}
-
-void memory_region_init_ram_device_ptr(MemoryRegion *mr,
- Object *owner,
- const char *name,
- uint64_t size,
- void *ptr)
-{
- memory_region_init(mr, owner, name, size);
- mr->ram = true;
- mr->terminates = true;
- mr->ram_device = true;
- mr->ops = &ram_device_mem_ops;
- mr->opaque = mr;
- mr->destructor = memory_region_destructor_ram;
- mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
- /* qemu_ram_alloc_from_ptr cannot fail with ptr != NULL. */
- assert(ptr != NULL);
- mr->ram_block = qemu_ram_alloc_from_ptr(size, ptr, mr, &error_fatal);
-}
-
-void memory_region_init_alias(MemoryRegion *mr,
- Object *owner,
- const char *name,
- MemoryRegion *orig,
- hwaddr offset,
- uint64_t size)
-{
- memory_region_init(mr, owner, name, size);
- mr->alias = orig;
- mr->alias_offset = offset;
-}
-
-void memory_region_init_rom_nomigrate(MemoryRegion *mr,
- struct Object *owner,
- const char *name,
- uint64_t size,
- Error **errp)
-{
- Error *err = NULL;
- memory_region_init(mr, owner, name, size);
- mr->ram = true;
- mr->readonly = true;
- mr->terminates = true;
- mr->destructor = memory_region_destructor_ram;
- mr->ram_block = qemu_ram_alloc(size, false, mr, &err);
- mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
- if (err) {
- mr->size = int128_zero();
- object_unparent(OBJECT(mr));
- error_propagate(errp, err);
- }
-}
-
-void memory_region_init_rom_device_nomigrate(MemoryRegion *mr,
- Object *owner,
- const MemoryRegionOps *ops,
- void *opaque,
- const char *name,
- uint64_t size,
- Error **errp)
-{
- Error *err = NULL;
- assert(ops);
- memory_region_init(mr, owner, name, size);
- mr->ops = ops;
- mr->opaque = opaque;
- mr->terminates = true;
- mr->rom_device = true;
- mr->destructor = memory_region_destructor_ram;
- mr->ram_block = qemu_ram_alloc(size, false, mr, &err);
- if (err) {
- mr->size = int128_zero();
- object_unparent(OBJECT(mr));
- error_propagate(errp, err);
- }
-}
-
-void memory_region_init_iommu(void *_iommu_mr,
- size_t instance_size,
- const char *mrtypename,
- Object *owner,
- const char *name,
- uint64_t size)
-{
- struct IOMMUMemoryRegion *iommu_mr;
- struct MemoryRegion *mr;
-
- object_initialize(_iommu_mr, instance_size, mrtypename);
- mr = MEMORY_REGION(_iommu_mr);
- memory_region_do_init(mr, owner, name, size);
- iommu_mr = IOMMU_MEMORY_REGION(mr);
- mr->terminates = true; /* then re-forwards */
- QLIST_INIT(&iommu_mr->iommu_notify);
- iommu_mr->iommu_notify_flags = IOMMU_NOTIFIER_NONE;
-}
-
-static void memory_region_finalize(Object *obj)
-{
- MemoryRegion *mr = MEMORY_REGION(obj);
-
- assert(!mr->container);
-
- /* We know the region is not visible in any address space (it
- * does not have a container and cannot be a root either because
- * it has no references, so we can blindly clear mr->enabled.
- * memory_region_set_enabled instead could trigger a transaction
- * and cause an infinite loop.
- */
- mr->enabled = false;
- memory_region_transaction_begin();
- while (!QTAILQ_EMPTY(&mr->subregions)) {
- MemoryRegion *subregion = QTAILQ_FIRST(&mr->subregions);
- memory_region_del_subregion(mr, subregion);
- }
- memory_region_transaction_commit();
-
- mr->destructor(mr);
- memory_region_clear_coalescing(mr);
- g_free((char *)mr->name);
- g_free(mr->ioeventfds);
-}
-
-Object *memory_region_owner(MemoryRegion *mr)
-{
- Object *obj = OBJECT(mr);
- return obj->parent;
-}
-
-void memory_region_ref(MemoryRegion *mr)
-{
- /* MMIO callbacks most likely will access data that belongs
- * to the owner, hence the need to ref/unref the owner whenever
- * the memory region is in use.
- *
- * The memory region is a child of its owner. As long as the
- * owner doesn't call unparent itself on the memory region,
- * ref-ing the owner will also keep the memory region alive.
- * Memory regions without an owner are supposed to never go away;
- * we do not ref/unref them because it slows down DMA sensibly.
- */
- if (mr && mr->owner) {
- object_ref(mr->owner);
- }
-}
-
-void memory_region_unref(MemoryRegion *mr)
-{
- if (mr && mr->owner) {
- object_unref(mr->owner);
- }
-}
-
-uint64_t memory_region_size(MemoryRegion *mr)
-{
- if (int128_eq(mr->size, int128_2_64())) {
- return UINT64_MAX;
- }
- return int128_get64(mr->size);
-}
-
-const char *memory_region_name(const MemoryRegion *mr)
-{
- if (!mr->name) {
- ((MemoryRegion *)mr)->name =
- object_get_canonical_path_component(OBJECT(mr));
- }
- return mr->name;
-}
-
-bool memory_region_is_ram_device(MemoryRegion *mr)
-{
- return mr->ram_device;
-}
-
-uint8_t memory_region_get_dirty_log_mask(MemoryRegion *mr)
-{
- uint8_t mask = mr->dirty_log_mask;
- if (global_dirty_log && mr->ram_block) {
- mask |= (1 << DIRTY_MEMORY_MIGRATION);
- }
- return mask;
-}
-
-bool memory_region_is_logging(MemoryRegion *mr, uint8_t client)
-{
- return memory_region_get_dirty_log_mask(mr) & (1 << client);
-}
-
-static int memory_region_update_iommu_notify_flags(IOMMUMemoryRegion *iommu_mr,
- Error **errp)
-{
- IOMMUNotifierFlag flags = IOMMU_NOTIFIER_NONE;
- IOMMUNotifier *iommu_notifier;
- IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr);
- int ret = 0;
-
- IOMMU_NOTIFIER_FOREACH(iommu_notifier, iommu_mr) {
- flags |= iommu_notifier->notifier_flags;
- }
-
- if (flags != iommu_mr->iommu_notify_flags && imrc->notify_flag_changed) {
- ret = imrc->notify_flag_changed(iommu_mr,
- iommu_mr->iommu_notify_flags,
- flags, errp);
- }
-
- if (!ret) {
- iommu_mr->iommu_notify_flags = flags;
- }
- return ret;
-}
-
-int memory_region_register_iommu_notifier(MemoryRegion *mr,
- IOMMUNotifier *n, Error **errp)
-{
- IOMMUMemoryRegion *iommu_mr;
- int ret;
-
- if (mr->alias) {
- return memory_region_register_iommu_notifier(mr->alias, n, errp);
- }
-
- /* We need to register for at least one bitfield */
- iommu_mr = IOMMU_MEMORY_REGION(mr);
- assert(n->notifier_flags != IOMMU_NOTIFIER_NONE);
- assert(n->start <= n->end);
- assert(n->iommu_idx >= 0 &&
- n->iommu_idx < memory_region_iommu_num_indexes(iommu_mr));
-
- QLIST_INSERT_HEAD(&iommu_mr->iommu_notify, n, node);
- ret = memory_region_update_iommu_notify_flags(iommu_mr, errp);
- if (ret) {
- QLIST_REMOVE(n, node);
- }
- return ret;
-}
-
-uint64_t memory_region_iommu_get_min_page_size(IOMMUMemoryRegion *iommu_mr)
-{
- IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr);
-
- if (imrc->get_min_page_size) {
- return imrc->get_min_page_size(iommu_mr);
- }
- return TARGET_PAGE_SIZE;
-}
-
-void memory_region_iommu_replay(IOMMUMemoryRegion *iommu_mr, IOMMUNotifier *n)
-{
- MemoryRegion *mr = MEMORY_REGION(iommu_mr);
- IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr);
- hwaddr addr, granularity;
- IOMMUTLBEntry iotlb;
-
- /* If the IOMMU has its own replay callback, override */
- if (imrc->replay) {
- imrc->replay(iommu_mr, n);
- return;
- }
-
- granularity = memory_region_iommu_get_min_page_size(iommu_mr);
-
- for (addr = 0; addr < memory_region_size(mr); addr += granularity) {
- iotlb = imrc->translate(iommu_mr, addr, IOMMU_NONE, n->iommu_idx);
- if (iotlb.perm != IOMMU_NONE) {
- n->notify(n, &iotlb);
- }
-
- /* if (2^64 - MR size) < granularity, it's possible to get an
- * infinite loop here. This should catch such a wraparound */
- if ((addr + granularity) < addr) {
- break;
- }
- }
-}
-
-void memory_region_unregister_iommu_notifier(MemoryRegion *mr,
- IOMMUNotifier *n)
-{
- IOMMUMemoryRegion *iommu_mr;
-
- if (mr->alias) {
- memory_region_unregister_iommu_notifier(mr->alias, n);
- return;
- }
- QLIST_REMOVE(n, node);
- iommu_mr = IOMMU_MEMORY_REGION(mr);
- memory_region_update_iommu_notify_flags(iommu_mr, NULL);
-}
-
-void memory_region_notify_one(IOMMUNotifier *notifier,
- IOMMUTLBEntry *entry)
-{
- IOMMUNotifierFlag request_flags;
- hwaddr entry_end = entry->iova + entry->addr_mask;
-
- /*
- * Skip the notification if the notification does not overlap
- * with registered range.
- */
- if (notifier->start > entry_end || notifier->end < entry->iova) {
- return;
- }
-
- assert(entry->iova >= notifier->start && entry_end <= notifier->end);
-
- if (entry->perm & IOMMU_RW) {
- request_flags = IOMMU_NOTIFIER_MAP;
- } else {
- request_flags = IOMMU_NOTIFIER_UNMAP;
- }
-
- if (notifier->notifier_flags & request_flags) {
- notifier->notify(notifier, entry);
- }
-}
-
-void memory_region_notify_iommu(IOMMUMemoryRegion *iommu_mr,
- int iommu_idx,
- IOMMUTLBEntry entry)
-{
- IOMMUNotifier *iommu_notifier;
-
- assert(memory_region_is_iommu(MEMORY_REGION(iommu_mr)));
-
- IOMMU_NOTIFIER_FOREACH(iommu_notifier, iommu_mr) {
- if (iommu_notifier->iommu_idx == iommu_idx) {
- memory_region_notify_one(iommu_notifier, &entry);
- }
- }
-}
-
-int memory_region_iommu_get_attr(IOMMUMemoryRegion *iommu_mr,
- enum IOMMUMemoryRegionAttr attr,
- void *data)
-{
- IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr);
-
- if (!imrc->get_attr) {
- return -EINVAL;
- }
-
- return imrc->get_attr(iommu_mr, attr, data);
-}
-
-int memory_region_iommu_attrs_to_index(IOMMUMemoryRegion *iommu_mr,
- MemTxAttrs attrs)
-{
- IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr);
-
- if (!imrc->attrs_to_index) {
- return 0;
- }
-
- return imrc->attrs_to_index(iommu_mr, attrs);
-}
-
-int memory_region_iommu_num_indexes(IOMMUMemoryRegion *iommu_mr)
-{
- IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr);
-
- if (!imrc->num_indexes) {
- return 1;
- }
-
- return imrc->num_indexes(iommu_mr);
-}
-
-void memory_region_set_log(MemoryRegion *mr, bool log, unsigned client)
-{
- uint8_t mask = 1 << client;
- uint8_t old_logging;
-
- assert(client == DIRTY_MEMORY_VGA);
- old_logging = mr->vga_logging_count;
- mr->vga_logging_count += log ? 1 : -1;
- if (!!old_logging == !!mr->vga_logging_count) {
- return;
- }
-
- memory_region_transaction_begin();
- mr->dirty_log_mask = (mr->dirty_log_mask & ~mask) | (log * mask);
- memory_region_update_pending |= mr->enabled;
- memory_region_transaction_commit();
-}
-
-void memory_region_set_dirty(MemoryRegion *mr, hwaddr addr,
- hwaddr size)
-{
- assert(mr->ram_block);
- cpu_physical_memory_set_dirty_range(memory_region_get_ram_addr(mr) + addr,
- size,
- memory_region_get_dirty_log_mask(mr));
-}
-
-static void memory_region_sync_dirty_bitmap(MemoryRegion *mr)
-{
- MemoryListener *listener;
- AddressSpace *as;
- FlatView *view;
- FlatRange *fr;
-
- /* If the same address space has multiple log_sync listeners, we
- * visit that address space's FlatView multiple times. But because
- * log_sync listeners are rare, it's still cheaper than walking each
- * address space once.
- */
- QTAILQ_FOREACH(listener, &memory_listeners, link) {
- if (!listener->log_sync) {
- continue;
- }
- as = listener->address_space;
- view = address_space_get_flatview(as);
- FOR_EACH_FLAT_RANGE(fr, view) {
- if (fr->dirty_log_mask && (!mr || fr->mr == mr)) {
- MemoryRegionSection mrs = section_from_flat_range(fr, view);
- listener->log_sync(listener, &mrs);
- }
- }
- flatview_unref(view);
- }
-}
-
-void memory_region_clear_dirty_bitmap(MemoryRegion *mr, hwaddr start,
- hwaddr len)
-{
- MemoryRegionSection mrs;
- MemoryListener *listener;
- AddressSpace *as;
- FlatView *view;
- FlatRange *fr;
- hwaddr sec_start, sec_end, sec_size;
-
- QTAILQ_FOREACH(listener, &memory_listeners, link) {
- if (!listener->log_clear) {
- continue;
- }
- as = listener->address_space;
- view = address_space_get_flatview(as);
- FOR_EACH_FLAT_RANGE(fr, view) {
- if (!fr->dirty_log_mask || fr->mr != mr) {
- /*
- * Clear dirty bitmap operation only applies to those
- * regions whose dirty logging is at least enabled
- */
- continue;
- }
-
- mrs = section_from_flat_range(fr, view);
-
- sec_start = MAX(mrs.offset_within_region, start);
- sec_end = mrs.offset_within_region + int128_get64(mrs.size);
- sec_end = MIN(sec_end, start + len);
-
- if (sec_start >= sec_end) {
- /*
- * If this memory region section has no intersection
- * with the requested range, skip.
- */
- continue;
- }
-
- /* Valid case; shrink the section if needed */
- mrs.offset_within_address_space +=
- sec_start - mrs.offset_within_region;
- mrs.offset_within_region = sec_start;
- sec_size = sec_end - sec_start;
- mrs.size = int128_make64(sec_size);
- listener->log_clear(listener, &mrs);
- }
- flatview_unref(view);
- }
-}
-
-DirtyBitmapSnapshot *memory_region_snapshot_and_clear_dirty(MemoryRegion *mr,
- hwaddr addr,
- hwaddr size,
- unsigned client)
-{
- DirtyBitmapSnapshot *snapshot;
- assert(mr->ram_block);
- memory_region_sync_dirty_bitmap(mr);
- snapshot = cpu_physical_memory_snapshot_and_clear_dirty(mr, addr, size, client);
- memory_global_after_dirty_log_sync();
- return snapshot;
-}
-
-bool memory_region_snapshot_get_dirty(MemoryRegion *mr, DirtyBitmapSnapshot *snap,
- hwaddr addr, hwaddr size)
-{
- assert(mr->ram_block);
- return cpu_physical_memory_snapshot_get_dirty(snap,
- memory_region_get_ram_addr(mr) + addr, size);
-}
-
-void memory_region_set_readonly(MemoryRegion *mr, bool readonly)
-{
- if (mr->readonly != readonly) {
- memory_region_transaction_begin();
- mr->readonly = readonly;
- memory_region_update_pending |= mr->enabled;
- memory_region_transaction_commit();
- }
-}
-
-void memory_region_set_nonvolatile(MemoryRegion *mr, bool nonvolatile)
-{
- if (mr->nonvolatile != nonvolatile) {
- memory_region_transaction_begin();
- mr->nonvolatile = nonvolatile;
- memory_region_update_pending |= mr->enabled;
- memory_region_transaction_commit();
- }
-}
-
-void memory_region_rom_device_set_romd(MemoryRegion *mr, bool romd_mode)
-{
- if (mr->romd_mode != romd_mode) {
- memory_region_transaction_begin();
- mr->romd_mode = romd_mode;
- memory_region_update_pending |= mr->enabled;
- memory_region_transaction_commit();
- }
-}
-
-void memory_region_reset_dirty(MemoryRegion *mr, hwaddr addr,
- hwaddr size, unsigned client)
-{
- assert(mr->ram_block);
- cpu_physical_memory_test_and_clear_dirty(
- memory_region_get_ram_addr(mr) + addr, size, client);
-}
-
-int memory_region_get_fd(MemoryRegion *mr)
-{
- int fd;
-
- RCU_READ_LOCK_GUARD();
- while (mr->alias) {
- mr = mr->alias;
- }
- fd = mr->ram_block->fd;
-
- return fd;
-}
-
-void *memory_region_get_ram_ptr(MemoryRegion *mr)
-{
- void *ptr;
- uint64_t offset = 0;
-
- RCU_READ_LOCK_GUARD();
- while (mr->alias) {
- offset += mr->alias_offset;
- mr = mr->alias;
- }
- assert(mr->ram_block);
- ptr = qemu_map_ram_ptr(mr->ram_block, offset);
-
- return ptr;
-}
-
-MemoryRegion *memory_region_from_host(void *ptr, ram_addr_t *offset)
-{
- RAMBlock *block;
-
- block = qemu_ram_block_from_host(ptr, false, offset);
- if (!block) {
- return NULL;
- }
-
- return block->mr;
-}
-
-ram_addr_t memory_region_get_ram_addr(MemoryRegion *mr)
-{
- return mr->ram_block ? mr->ram_block->offset : RAM_ADDR_INVALID;
-}
-
-void memory_region_ram_resize(MemoryRegion *mr, ram_addr_t newsize, Error **errp)
-{
- assert(mr->ram_block);
-
- qemu_ram_resize(mr->ram_block, newsize, errp);
-}
-
-
-void memory_region_do_writeback(MemoryRegion *mr, hwaddr addr, hwaddr size)
-{
- /*
- * Might be extended case needed to cover
- * different types of memory regions
- */
- if (mr->ram_block && mr->dirty_log_mask) {
- qemu_ram_writeback(mr->ram_block, addr, size);
- }
-}
-
-/*
- * Call proper memory listeners about the change on the newly
- * added/removed CoalescedMemoryRange.
- */
-static void memory_region_update_coalesced_range(MemoryRegion *mr,
- CoalescedMemoryRange *cmr,
- bool add)
-{
- AddressSpace *as;
- FlatView *view;
- FlatRange *fr;
-
- QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
- view = address_space_get_flatview(as);
- FOR_EACH_FLAT_RANGE(fr, view) {
- if (fr->mr == mr) {
- flat_range_coalesced_io_notify(fr, as, cmr, add);
- }
- }
- flatview_unref(view);
- }
-}
-
-void memory_region_set_coalescing(MemoryRegion *mr)
-{
- memory_region_clear_coalescing(mr);
- memory_region_add_coalescing(mr, 0, int128_get64(mr->size));
-}
-
-void memory_region_add_coalescing(MemoryRegion *mr,
- hwaddr offset,
- uint64_t size)
-{
- CoalescedMemoryRange *cmr = g_malloc(sizeof(*cmr));
-
- cmr->addr = addrrange_make(int128_make64(offset), int128_make64(size));
- QTAILQ_INSERT_TAIL(&mr->coalesced, cmr, link);
- memory_region_update_coalesced_range(mr, cmr, true);
- memory_region_set_flush_coalesced(mr);
-}
-
-void memory_region_clear_coalescing(MemoryRegion *mr)
-{
- CoalescedMemoryRange *cmr;
-
- if (QTAILQ_EMPTY(&mr->coalesced)) {
- return;
- }
-
- qemu_flush_coalesced_mmio_buffer();
- mr->flush_coalesced_mmio = false;
-
- while (!QTAILQ_EMPTY(&mr->coalesced)) {
- cmr = QTAILQ_FIRST(&mr->coalesced);
- QTAILQ_REMOVE(&mr->coalesced, cmr, link);
- memory_region_update_coalesced_range(mr, cmr, false);
- g_free(cmr);
- }
-}
-
-void memory_region_set_flush_coalesced(MemoryRegion *mr)
-{
- mr->flush_coalesced_mmio = true;
-}
-
-void memory_region_clear_flush_coalesced(MemoryRegion *mr)
-{
- qemu_flush_coalesced_mmio_buffer();
- if (QTAILQ_EMPTY(&mr->coalesced)) {
- mr->flush_coalesced_mmio = false;
- }
-}
-
-void memory_region_clear_global_locking(MemoryRegion *mr)
-{
- mr->global_locking = false;
-}
-
-static bool userspace_eventfd_warning;
-
-void memory_region_add_eventfd(MemoryRegion *mr,
- hwaddr addr,
- unsigned size,
- bool match_data,
- uint64_t data,
- EventNotifier *e)
-{
- MemoryRegionIoeventfd mrfd = {
- .addr.start = int128_make64(addr),
- .addr.size = int128_make64(size),
- .match_data = match_data,
- .data = data,
- .e = e,
- };
- unsigned i;
-
- if (kvm_enabled() && (!(kvm_eventfds_enabled() ||
- userspace_eventfd_warning))) {
- userspace_eventfd_warning = true;
- error_report("Using eventfd without MMIO binding in KVM. "
- "Suboptimal performance expected");
- }
-
- if (size) {
- adjust_endianness(mr, &mrfd.data, size_memop(size) | MO_TE);
- }
- memory_region_transaction_begin();
- for (i = 0; i < mr->ioeventfd_nb; ++i) {
- if (memory_region_ioeventfd_before(&mrfd, &mr->ioeventfds[i])) {
- break;
- }
- }
- ++mr->ioeventfd_nb;
- mr->ioeventfds = g_realloc(mr->ioeventfds,
- sizeof(*mr->ioeventfds) * mr->ioeventfd_nb);
- memmove(&mr->ioeventfds[i+1], &mr->ioeventfds[i],
- sizeof(*mr->ioeventfds) * (mr->ioeventfd_nb-1 - i));
- mr->ioeventfds[i] = mrfd;
- ioeventfd_update_pending |= mr->enabled;
- memory_region_transaction_commit();
-}
-
-void memory_region_del_eventfd(MemoryRegion *mr,
- hwaddr addr,
- unsigned size,
- bool match_data,
- uint64_t data,
- EventNotifier *e)
-{
- MemoryRegionIoeventfd mrfd = {
- .addr.start = int128_make64(addr),
- .addr.size = int128_make64(size),
- .match_data = match_data,
- .data = data,
- .e = e,
- };
- unsigned i;
-
- if (size) {
- adjust_endianness(mr, &mrfd.data, size_memop(size) | MO_TE);
- }
- memory_region_transaction_begin();
- for (i = 0; i < mr->ioeventfd_nb; ++i) {
- if (memory_region_ioeventfd_equal(&mrfd, &mr->ioeventfds[i])) {
- break;
- }
- }
- assert(i != mr->ioeventfd_nb);
- memmove(&mr->ioeventfds[i], &mr->ioeventfds[i+1],
- sizeof(*mr->ioeventfds) * (mr->ioeventfd_nb - (i+1)));
- --mr->ioeventfd_nb;
- mr->ioeventfds = g_realloc(mr->ioeventfds,
- sizeof(*mr->ioeventfds)*mr->ioeventfd_nb + 1);
- ioeventfd_update_pending |= mr->enabled;
- memory_region_transaction_commit();
-}
-
-static void memory_region_update_container_subregions(MemoryRegion *subregion)
-{
- MemoryRegion *mr = subregion->container;
- MemoryRegion *other;
-
- memory_region_transaction_begin();
-
- memory_region_ref(subregion);
- QTAILQ_FOREACH(other, &mr->subregions, subregions_link) {
- if (subregion->priority >= other->priority) {
- QTAILQ_INSERT_BEFORE(other, subregion, subregions_link);
- goto done;
- }
- }
- QTAILQ_INSERT_TAIL(&mr->subregions, subregion, subregions_link);
-done:
- memory_region_update_pending |= mr->enabled && subregion->enabled;
- memory_region_transaction_commit();
-}
-
-static void memory_region_add_subregion_common(MemoryRegion *mr,
- hwaddr offset,
- MemoryRegion *subregion)
-{
- assert(!subregion->container);
- subregion->container = mr;
- subregion->addr = offset;
- memory_region_update_container_subregions(subregion);
-}
-
-void memory_region_add_subregion(MemoryRegion *mr,
- hwaddr offset,
- MemoryRegion *subregion)
-{
- subregion->priority = 0;
- memory_region_add_subregion_common(mr, offset, subregion);
-}
-
-void memory_region_add_subregion_overlap(MemoryRegion *mr,
- hwaddr offset,
- MemoryRegion *subregion,
- int priority)
-{
- subregion->priority = priority;
- memory_region_add_subregion_common(mr, offset, subregion);
-}
-
-void memory_region_del_subregion(MemoryRegion *mr,
- MemoryRegion *subregion)
-{
- memory_region_transaction_begin();
- assert(subregion->container == mr);
- subregion->container = NULL;
- QTAILQ_REMOVE(&mr->subregions, subregion, subregions_link);
- memory_region_unref(subregion);
- memory_region_update_pending |= mr->enabled && subregion->enabled;
- memory_region_transaction_commit();
-}
-
-void memory_region_set_enabled(MemoryRegion *mr, bool enabled)
-{
- if (enabled == mr->enabled) {
- return;
- }
- memory_region_transaction_begin();
- mr->enabled = enabled;
- memory_region_update_pending = true;
- memory_region_transaction_commit();
-}
-
-void memory_region_set_size(MemoryRegion *mr, uint64_t size)
-{
- Int128 s = int128_make64(size);
-
- if (size == UINT64_MAX) {
- s = int128_2_64();
- }
- if (int128_eq(s, mr->size)) {
- return;
- }
- memory_region_transaction_begin();
- mr->size = s;
- memory_region_update_pending = true;
- memory_region_transaction_commit();
-}
-
-static void memory_region_readd_subregion(MemoryRegion *mr)
-{
- MemoryRegion *container = mr->container;
-
- if (container) {
- memory_region_transaction_begin();
- memory_region_ref(mr);
- memory_region_del_subregion(container, mr);
- mr->container = container;
- memory_region_update_container_subregions(mr);
- memory_region_unref(mr);
- memory_region_transaction_commit();
- }
-}
-
-void memory_region_set_address(MemoryRegion *mr, hwaddr addr)
-{
- if (addr != mr->addr) {
- mr->addr = addr;
- memory_region_readd_subregion(mr);
- }
-}
-
-void memory_region_set_alias_offset(MemoryRegion *mr, hwaddr offset)
-{
- assert(mr->alias);
-
- if (offset == mr->alias_offset) {
- return;
- }
-
- memory_region_transaction_begin();
- mr->alias_offset = offset;
- memory_region_update_pending |= mr->enabled;
- memory_region_transaction_commit();
-}
-
-uint64_t memory_region_get_alignment(const MemoryRegion *mr)
-{
- return mr->align;
-}
-
-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 *flatview_lookup(FlatView *view, AddrRange addr)
-{
- return bsearch(&addr, view->ranges, view->nr,
- sizeof(FlatRange), cmp_flatrange_addr);
-}
-
-bool memory_region_is_mapped(MemoryRegion *mr)
-{
- return mr->container ? true : false;
-}
-
-/* Same as memory_region_find, but it does not add a reference to the
- * returned region. It must be called from an RCU critical section.
- */
-static MemoryRegionSection memory_region_find_rcu(MemoryRegion *mr,
- hwaddr addr, uint64_t size)
-{
- MemoryRegionSection ret = { .mr = NULL };
- MemoryRegion *root;
- AddressSpace *as;
- AddrRange range;
- FlatView *view;
- FlatRange *fr;
-
- addr += mr->addr;
- for (root = mr; root->container; ) {
- root = root->container;
- addr += root->addr;
- }
-
- as = memory_region_to_address_space(root);
- if (!as) {
- return ret;
- }
- range = addrrange_make(int128_make64(addr), int128_make64(size));
-
- view = address_space_to_flatview(as);
- fr = flatview_lookup(view, range);
- if (!fr) {
- return ret;
- }
-
- while (fr > view->ranges && addrrange_intersects(fr[-1].addr, range)) {
- --fr;
- }
-
- ret.mr = fr->mr;
- ret.fv = view;
- 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 = range.size;
- ret.offset_within_address_space = int128_get64(range.start);
- ret.readonly = fr->readonly;
- ret.nonvolatile = fr->nonvolatile;
- return ret;
-}
-
-MemoryRegionSection memory_region_find(MemoryRegion *mr,
- hwaddr addr, uint64_t size)
-{
- MemoryRegionSection ret;
- RCU_READ_LOCK_GUARD();
- ret = memory_region_find_rcu(mr, addr, size);
- if (ret.mr) {
- memory_region_ref(ret.mr);
- }
- return ret;
-}
-
-bool memory_region_present(MemoryRegion *container, hwaddr addr)
-{
- MemoryRegion *mr;
-
- RCU_READ_LOCK_GUARD();
- mr = memory_region_find_rcu(container, addr, 1).mr;
- return mr && mr != container;
-}
-
-void memory_global_dirty_log_sync(void)
-{
- memory_region_sync_dirty_bitmap(NULL);
-}
-
-void memory_global_after_dirty_log_sync(void)
-{
- MEMORY_LISTENER_CALL_GLOBAL(log_global_after_sync, Forward);
-}
-
-static VMChangeStateEntry *vmstate_change;
-
-void memory_global_dirty_log_start(void)
-{
- if (vmstate_change) {
- qemu_del_vm_change_state_handler(vmstate_change);
- vmstate_change = NULL;
- }
-
- global_dirty_log = true;
-
- MEMORY_LISTENER_CALL_GLOBAL(log_global_start, Forward);
-
- /* Refresh DIRTY_MEMORY_MIGRATION bit. */
- memory_region_transaction_begin();
- memory_region_update_pending = true;
- memory_region_transaction_commit();
-}
-
-static void memory_global_dirty_log_do_stop(void)
-{
- global_dirty_log = false;
-
- /* Refresh DIRTY_MEMORY_MIGRATION bit. */
- memory_region_transaction_begin();
- memory_region_update_pending = true;
- memory_region_transaction_commit();
-
- MEMORY_LISTENER_CALL_GLOBAL(log_global_stop, Reverse);
-}
-
-static void memory_vm_change_state_handler(void *opaque, int running,
- RunState state)
-{
- if (running) {
- memory_global_dirty_log_do_stop();
-
- if (vmstate_change) {
- qemu_del_vm_change_state_handler(vmstate_change);
- vmstate_change = NULL;
- }
- }
-}
-
-void memory_global_dirty_log_stop(void)
-{
- if (!runstate_is_running()) {
- if (vmstate_change) {
- return;
- }
- vmstate_change = qemu_add_vm_change_state_handler(
- memory_vm_change_state_handler, NULL);
- return;
- }
-
- memory_global_dirty_log_do_stop();
-}
-
-static void listener_add_address_space(MemoryListener *listener,
- AddressSpace *as)
-{
- FlatView *view;
- FlatRange *fr;
-
- if (listener->begin) {
- listener->begin(listener);
- }
- if (global_dirty_log) {
- if (listener->log_global_start) {
- listener->log_global_start(listener);
- }
- }
-
- view = address_space_get_flatview(as);
- FOR_EACH_FLAT_RANGE(fr, view) {
- MemoryRegionSection section = section_from_flat_range(fr, view);
-
- if (listener->region_add) {
- listener->region_add(listener, §ion);
- }
- if (fr->dirty_log_mask && listener->log_start) {
- listener->log_start(listener, §ion, 0, fr->dirty_log_mask);
- }
- }
- if (listener->commit) {
- listener->commit(listener);
- }
- flatview_unref(view);
-}
-
-static void listener_del_address_space(MemoryListener *listener,
- AddressSpace *as)
-{
- FlatView *view;
- FlatRange *fr;
-
- if (listener->begin) {
- listener->begin(listener);
- }
- view = address_space_get_flatview(as);
- FOR_EACH_FLAT_RANGE(fr, view) {
- MemoryRegionSection section = section_from_flat_range(fr, view);
-
- if (fr->dirty_log_mask && listener->log_stop) {
- listener->log_stop(listener, §ion, fr->dirty_log_mask, 0);
- }
- if (listener->region_del) {
- listener->region_del(listener, §ion);
- }
- }
- if (listener->commit) {
- listener->commit(listener);
- }
- flatview_unref(view);
-}
-
-void memory_listener_register(MemoryListener *listener, AddressSpace *as)
-{
- MemoryListener *other = NULL;
-
- listener->address_space = as;
- if (QTAILQ_EMPTY(&memory_listeners)
- || listener->priority >= QTAILQ_LAST(&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);
- }
-
- if (QTAILQ_EMPTY(&as->listeners)
- || listener->priority >= QTAILQ_LAST(&as->listeners)->priority) {
- QTAILQ_INSERT_TAIL(&as->listeners, listener, link_as);
- } else {
- QTAILQ_FOREACH(other, &as->listeners, link_as) {
- if (listener->priority < other->priority) {
- break;
- }
- }
- QTAILQ_INSERT_BEFORE(other, listener, link_as);
- }
-
- listener_add_address_space(listener, as);
-}
-
-void memory_listener_unregister(MemoryListener *listener)
-{
- if (!listener->address_space) {
- return;
- }
-
- listener_del_address_space(listener, listener->address_space);
- QTAILQ_REMOVE(&memory_listeners, listener, link);
- QTAILQ_REMOVE(&listener->address_space->listeners, listener, link_as);
- listener->address_space = NULL;
-}
-
-void address_space_remove_listeners(AddressSpace *as)
-{
- while (!QTAILQ_EMPTY(&as->listeners)) {
- memory_listener_unregister(QTAILQ_FIRST(&as->listeners));
- }
-}
-
-void address_space_init(AddressSpace *as, MemoryRegion *root, const char *name)
-{
- memory_region_ref(root);
- as->root = root;
- as->current_map = NULL;
- as->ioeventfd_nb = 0;
- as->ioeventfds = NULL;
- QTAILQ_INIT(&as->listeners);
- QTAILQ_INSERT_TAIL(&address_spaces, as, address_spaces_link);
- as->name = g_strdup(name ? name : "anonymous");
- address_space_update_topology(as);
- address_space_update_ioeventfds(as);
-}
-
-static void do_address_space_destroy(AddressSpace *as)
-{
- assert(QTAILQ_EMPTY(&as->listeners));
-
- flatview_unref(as->current_map);
- g_free(as->name);
- g_free(as->ioeventfds);
- memory_region_unref(as->root);
-}
-
-void address_space_destroy(AddressSpace *as)
-{
- MemoryRegion *root = as->root;
-
- /* Flush out anything from MemoryListeners listening in on this */
- memory_region_transaction_begin();
- as->root = NULL;
- memory_region_transaction_commit();
- QTAILQ_REMOVE(&address_spaces, as, address_spaces_link);
-
- /* At this point, as->dispatch and as->current_map are dummy
- * entries that the guest should never use. Wait for the old
- * values to expire before freeing the data.
- */
- as->root = root;
- call_rcu(as, do_address_space_destroy, rcu);
-}
-
-static const char *memory_region_type(MemoryRegion *mr)
-{
- if (memory_region_is_ram_device(mr)) {
- return "ramd";
- } else if (memory_region_is_romd(mr)) {
- return "romd";
- } else if (memory_region_is_rom(mr)) {
- return "rom";
- } else if (memory_region_is_ram(mr)) {
- return "ram";
- } else {
- return "i/o";
- }
-}
-
-typedef struct MemoryRegionList MemoryRegionList;
-
-struct MemoryRegionList {
- const MemoryRegion *mr;
- QTAILQ_ENTRY(MemoryRegionList) mrqueue;
-};
-
-typedef QTAILQ_HEAD(, MemoryRegionList) MemoryRegionListHead;
-
-#define MR_SIZE(size) (int128_nz(size) ? (hwaddr)int128_get64( \
- int128_sub((size), int128_one())) : 0)
-#define MTREE_INDENT " "
-
-static void mtree_expand_owner(const char *label, Object *obj)
-{
- DeviceState *dev = (DeviceState *) object_dynamic_cast(obj, TYPE_DEVICE);
-
- qemu_printf(" %s:{%s", label, dev ? "dev" : "obj");
- if (dev && dev->id) {
- qemu_printf(" id=%s", dev->id);
- } else {
- gchar *canonical_path = object_get_canonical_path(obj);
- if (canonical_path) {
- qemu_printf(" path=%s", canonical_path);
- g_free(canonical_path);
- } else {
- qemu_printf(" type=%s", object_get_typename(obj));
- }
- }
- qemu_printf("}");
-}
-
-static void mtree_print_mr_owner(const MemoryRegion *mr)
-{
- Object *owner = mr->owner;
- Object *parent = memory_region_owner((MemoryRegion *)mr);
-
- if (!owner && !parent) {
- qemu_printf(" orphan");
- return;
- }
- if (owner) {
- mtree_expand_owner("owner", owner);
- }
- if (parent && parent != owner) {
- mtree_expand_owner("parent", parent);
- }
-}
-
-static void mtree_print_mr(const MemoryRegion *mr, unsigned int level,
- hwaddr base,
- MemoryRegionListHead *alias_print_queue,
- bool owner)
-{
- MemoryRegionList *new_ml, *ml, *next_ml;
- MemoryRegionListHead submr_print_queue;
- const MemoryRegion *submr;
- unsigned int i;
- hwaddr cur_start, cur_end;
-
- if (!mr) {
- return;
- }
-
- for (i = 0; i < level; i++) {
- qemu_printf(MTREE_INDENT);
- }
-
- cur_start = base + mr->addr;
- cur_end = cur_start + MR_SIZE(mr->size);
-
- /*
- * Try to detect overflow of memory region. This should never
- * happen normally. When it happens, we dump something to warn the
- * user who is observing this.
- */
- if (cur_start < base || cur_end < cur_start) {
- qemu_printf("[DETECTED OVERFLOW!] ");
- }
-
- if (mr->alias) {
- MemoryRegionList *ml;
- bool found = false;
-
- /* check if the alias is already in the queue */
- QTAILQ_FOREACH(ml, alias_print_queue, mrqueue) {
- if (ml->mr == mr->alias) {
- found = true;
- }
- }
-
- if (!found) {
- ml = g_new(MemoryRegionList, 1);
- ml->mr = mr->alias;
- QTAILQ_INSERT_TAIL(alias_print_queue, ml, mrqueue);
- }
- qemu_printf(TARGET_FMT_plx "-" TARGET_FMT_plx
- " (prio %d, %s%s): alias %s @%s " TARGET_FMT_plx
- "-" TARGET_FMT_plx "%s",
- cur_start, cur_end,
- mr->priority,
- mr->nonvolatile ? "nv-" : "",
- memory_region_type((MemoryRegion *)mr),
- memory_region_name(mr),
- memory_region_name(mr->alias),
- mr->alias_offset,
- mr->alias_offset + MR_SIZE(mr->size),
- mr->enabled ? "" : " [disabled]");
- if (owner) {
- mtree_print_mr_owner(mr);
- }
- } else {
- qemu_printf(TARGET_FMT_plx "-" TARGET_FMT_plx
- " (prio %d, %s%s): %s%s",
- cur_start, cur_end,
- mr->priority,
- mr->nonvolatile ? "nv-" : "",
- memory_region_type((MemoryRegion *)mr),
- memory_region_name(mr),
- mr->enabled ? "" : " [disabled]");
- if (owner) {
- mtree_print_mr_owner(mr);
- }
- }
- qemu_printf("\n");
-
- 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, mrqueue) {
- 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, mrqueue);
- new_ml = NULL;
- break;
- }
- }
- if (new_ml) {
- QTAILQ_INSERT_TAIL(&submr_print_queue, new_ml, mrqueue);
- }
- }
-
- QTAILQ_FOREACH(ml, &submr_print_queue, mrqueue) {
- mtree_print_mr(ml->mr, level + 1, cur_start,
- alias_print_queue, owner);
- }
-
- QTAILQ_FOREACH_SAFE(ml, &submr_print_queue, mrqueue, next_ml) {
- g_free(ml);
- }
-}
-
-struct FlatViewInfo {
- int counter;
- bool dispatch_tree;
- bool owner;
- AccelClass *ac;
-};
-
-static void mtree_print_flatview(gpointer key, gpointer value,
- gpointer user_data)
-{
- FlatView *view = key;
- GArray *fv_address_spaces = value;
- struct FlatViewInfo *fvi = user_data;
- FlatRange *range = &view->ranges[0];
- MemoryRegion *mr;
- int n = view->nr;
- int i;
- AddressSpace *as;
-
- qemu_printf("FlatView #%d\n", fvi->counter);
- ++fvi->counter;
-
- for (i = 0; i < fv_address_spaces->len; ++i) {
- as = g_array_index(fv_address_spaces, AddressSpace*, i);
- qemu_printf(" AS \"%s\", root: %s",
- as->name, memory_region_name(as->root));
- if (as->root->alias) {
- qemu_printf(", alias %s", memory_region_name(as->root->alias));
- }
- qemu_printf("\n");
- }
-
- qemu_printf(" Root memory region: %s\n",
- view->root ? memory_region_name(view->root) : "(none)");
-
- if (n <= 0) {
- qemu_printf(MTREE_INDENT "No rendered FlatView\n\n");
- return;
- }
-
- while (n--) {
- mr = range->mr;
- if (range->offset_in_region) {
- qemu_printf(MTREE_INDENT TARGET_FMT_plx "-" TARGET_FMT_plx
- " (prio %d, %s%s): %s @" TARGET_FMT_plx,
- int128_get64(range->addr.start),
- int128_get64(range->addr.start)
- + MR_SIZE(range->addr.size),
- mr->priority,
- range->nonvolatile ? "nv-" : "",
- range->readonly ? "rom" : memory_region_type(mr),
- memory_region_name(mr),
- range->offset_in_region);
- } else {
- qemu_printf(MTREE_INDENT TARGET_FMT_plx "-" TARGET_FMT_plx
- " (prio %d, %s%s): %s",
- int128_get64(range->addr.start),
- int128_get64(range->addr.start)
- + MR_SIZE(range->addr.size),
- mr->priority,
- range->nonvolatile ? "nv-" : "",
- range->readonly ? "rom" : memory_region_type(mr),
- memory_region_name(mr));
- }
- if (fvi->owner) {
- mtree_print_mr_owner(mr);
- }
-
- if (fvi->ac) {
- for (i = 0; i < fv_address_spaces->len; ++i) {
- as = g_array_index(fv_address_spaces, AddressSpace*, i);
- if (fvi->ac->has_memory(current_machine, as,
- int128_get64(range->addr.start),
- MR_SIZE(range->addr.size) + 1)) {
- qemu_printf(" %s", fvi->ac->name);
- }
- }
- }
- qemu_printf("\n");
- range++;
- }
-
-#if !defined(CONFIG_USER_ONLY)
- if (fvi->dispatch_tree && view->root) {
- mtree_print_dispatch(view->dispatch, view->root);
- }
-#endif
-
- qemu_printf("\n");
-}
-
-static gboolean mtree_info_flatview_free(gpointer key, gpointer value,
- gpointer user_data)
-{
- FlatView *view = key;
- GArray *fv_address_spaces = value;
-
- g_array_unref(fv_address_spaces);
- flatview_unref(view);
-
- return true;
-}
-
-void mtree_info(bool flatview, bool dispatch_tree, bool owner)
-{
- MemoryRegionListHead ml_head;
- MemoryRegionList *ml, *ml2;
- AddressSpace *as;
-
- if (flatview) {
- FlatView *view;
- struct FlatViewInfo fvi = {
- .counter = 0,
- .dispatch_tree = dispatch_tree,
- .owner = owner,
- };
- GArray *fv_address_spaces;
- GHashTable *views = g_hash_table_new(g_direct_hash, g_direct_equal);
- AccelClass *ac = ACCEL_GET_CLASS(current_machine->accelerator);
-
- if (ac->has_memory) {
- fvi.ac = ac;
- }
-
- /* Gather all FVs in one table */
- QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
- view = address_space_get_flatview(as);
-
- fv_address_spaces = g_hash_table_lookup(views, view);
- if (!fv_address_spaces) {
- fv_address_spaces = g_array_new(false, false, sizeof(as));
- g_hash_table_insert(views, view, fv_address_spaces);
- }
-
- g_array_append_val(fv_address_spaces, as);
- }
-
- /* Print */
- g_hash_table_foreach(views, mtree_print_flatview, &fvi);
-
- /* Free */
- g_hash_table_foreach_remove(views, mtree_info_flatview_free, 0);
- g_hash_table_unref(views);
-
- return;
- }
-
- QTAILQ_INIT(&ml_head);
-
- QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
- qemu_printf("address-space: %s\n", as->name);
- mtree_print_mr(as->root, 1, 0, &ml_head, owner);
- qemu_printf("\n");
- }
-
- /* print aliased regions */
- QTAILQ_FOREACH(ml, &ml_head, mrqueue) {
- qemu_printf("memory-region: %s\n", memory_region_name(ml->mr));
- mtree_print_mr(ml->mr, 1, 0, &ml_head, owner);
- qemu_printf("\n");
- }
-
- QTAILQ_FOREACH_SAFE(ml, &ml_head, mrqueue, ml2) {
- g_free(ml);
- }
-}
-
-void memory_region_init_ram(MemoryRegion *mr,
- struct Object *owner,
- const char *name,
- uint64_t size,
- Error **errp)
-{
- DeviceState *owner_dev;
- Error *err = NULL;
-
- memory_region_init_ram_nomigrate(mr, owner, name, size, &err);
- if (err) {
- error_propagate(errp, err);
- return;
- }
- /* This will assert if owner is neither NULL nor a DeviceState.
- * We only want the owner here for the purposes of defining a
- * unique name for migration. TODO: Ideally we should implement
- * a naming scheme for Objects which are not DeviceStates, in
- * which case we can relax this restriction.
- */
- owner_dev = DEVICE(owner);
- vmstate_register_ram(mr, owner_dev);
-}
-
-void memory_region_init_rom(MemoryRegion *mr,
- struct Object *owner,
- const char *name,
- uint64_t size,
- Error **errp)
-{
- DeviceState *owner_dev;
- Error *err = NULL;
-
- memory_region_init_rom_nomigrate(mr, owner, name, size, &err);
- if (err) {
- error_propagate(errp, err);
- return;
- }
- /* This will assert if owner is neither NULL nor a DeviceState.
- * We only want the owner here for the purposes of defining a
- * unique name for migration. TODO: Ideally we should implement
- * a naming scheme for Objects which are not DeviceStates, in
- * which case we can relax this restriction.
- */
- owner_dev = DEVICE(owner);
- vmstate_register_ram(mr, owner_dev);
-}
-
-void memory_region_init_rom_device(MemoryRegion *mr,
- struct Object *owner,
- const MemoryRegionOps *ops,
- void *opaque,
- const char *name,
- uint64_t size,
- Error **errp)
-{
- DeviceState *owner_dev;
- Error *err = NULL;
-
- memory_region_init_rom_device_nomigrate(mr, owner, ops, opaque,
- name, size, &err);
- if (err) {
- error_propagate(errp, err);
- return;
- }
- /* This will assert if owner is neither NULL nor a DeviceState.
- * We only want the owner here for the purposes of defining a
- * unique name for migration. TODO: Ideally we should implement
- * a naming scheme for Objects which are not DeviceStates, in
- * which case we can relax this restriction.
- */
- owner_dev = DEVICE(owner);
- vmstate_register_ram(mr, owner_dev);
-}
-
-static const TypeInfo memory_region_info = {
- .parent = TYPE_OBJECT,
- .name = TYPE_MEMORY_REGION,
- .class_size = sizeof(MemoryRegionClass),
- .instance_size = sizeof(MemoryRegion),
- .instance_init = memory_region_initfn,
- .instance_finalize = memory_region_finalize,
-};
-
-static const TypeInfo iommu_memory_region_info = {
- .parent = TYPE_MEMORY_REGION,
- .name = TYPE_IOMMU_MEMORY_REGION,
- .class_size = sizeof(IOMMUMemoryRegionClass),
- .instance_size = sizeof(IOMMUMemoryRegion),
- .instance_init = iommu_memory_region_initfn,
- .abstract = true,
-};
-
-static void memory_register_types(void)
-{
- type_register_static(&memory_region_info);
- type_register_static(&iommu_memory_region_info);
-}
-
-type_init(memory_register_types)
projects / mirror_qemu.git / blobdiff