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| 1 |
/*
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* Physical memory management
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*
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* Copyright 2011 Red Hat, Inc. and/or its affiliates
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*
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* Authors:
|
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* Avi Kivity <avi@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2. See
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* the COPYING file in the top-level directory.
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*
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* Contributions after 2012-01-13 are licensed under the terms of the
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* GNU GPL, version 2 or (at your option) any later version.
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*/
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#include "exec/memory.h" |
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#include "exec/address-spaces.h" |
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#include "exec/ioport.h" |
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#include "qemu/bitops.h" |
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#include "qom/object.h" |
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#include "trace.h" |
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#include <assert.h> |
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|
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#include "exec/memory-internal.h" |
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#include "exec/ram_addr.h" |
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|
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//#define DEBUG_UNASSIGNED
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|
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static unsigned memory_region_transaction_depth; |
| 30 |
static bool memory_region_update_pending; |
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static bool global_dirty_log = false; |
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|
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/* flat_view_mutex is taken around reading as->current_map; the critical
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* section is extremely short, so I'm using a single mutex for every AS.
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* We could also RCU for the read-side.
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*
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* The BQL is taken around transaction commits, hence both locks are taken
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* while writing to as->current_map (with the BQL taken outside).
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*/
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static QemuMutex flat_view_mutex;
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|
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static QTAILQ_HEAD(memory_listeners, MemoryListener) memory_listeners
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= QTAILQ_HEAD_INITIALIZER(memory_listeners); |
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|
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static QTAILQ_HEAD(, AddressSpace) address_spaces
|
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= QTAILQ_HEAD_INITIALIZER(address_spaces); |
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|
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static void memory_init(void) |
| 49 |
{
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qemu_mutex_init(&flat_view_mutex); |
| 51 |
} |
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|
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typedef struct AddrRange AddrRange; |
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|
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/*
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* Note using signed integers limits us to physical addresses at most
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* 63 bits wide. They are needed for negative offsetting in aliases
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* (large MemoryRegion::alias_offset).
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*/
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struct AddrRange {
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Int128 start; |
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Int128 size; |
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}; |
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static AddrRange addrrange_make(Int128 start, Int128 size)
|
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{
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return (AddrRange) { start, size };
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} |
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|
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static bool addrrange_equal(AddrRange r1, AddrRange r2) |
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{
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return int128_eq(r1.start, r2.start) && int128_eq(r1.size, r2.size);
|
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} |
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static Int128 addrrange_end(AddrRange r)
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{
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return int128_add(r.start, r.size);
|
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} |
| 79 |
|
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static AddrRange addrrange_shift(AddrRange range, Int128 delta)
|
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{
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int128_addto(&range.start, delta); |
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return range;
|
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} |
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|
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static bool addrrange_contains(AddrRange range, Int128 addr) |
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{
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return int128_ge(addr, range.start)
|
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&& int128_lt(addr, addrrange_end(range)); |
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} |
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|
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static bool addrrange_intersects(AddrRange r1, AddrRange r2) |
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{
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return addrrange_contains(r1, r2.start)
|
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|| addrrange_contains(r2, r1.start); |
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} |
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static AddrRange addrrange_intersection(AddrRange r1, AddrRange r2)
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{
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Int128 start = int128_max(r1.start, r2.start); |
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Int128 end = int128_min(addrrange_end(r1), addrrange_end(r2)); |
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return addrrange_make(start, int128_sub(end, start));
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} |
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|
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enum ListenerDirection { Forward, Reverse };
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|
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static bool memory_listener_match(MemoryListener *listener, |
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MemoryRegionSection *section) |
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{
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return !listener->address_space_filter
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|| listener->address_space_filter == section->address_space; |
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} |
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#define MEMORY_LISTENER_CALL_GLOBAL(_callback, _direction, _args...) \
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do { \
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MemoryListener *_listener; \ |
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\ |
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switch (_direction) { \
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case Forward: \
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QTAILQ_FOREACH(_listener, &memory_listeners, link) { \
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if (_listener->_callback) { \
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_listener->_callback(_listener, ##_args); \ |
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} \ |
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} \ |
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break; \
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case Reverse: \
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QTAILQ_FOREACH_REVERSE(_listener, &memory_listeners, \ |
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memory_listeners, link) { \
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if (_listener->_callback) { \
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_listener->_callback(_listener, ##_args); \ |
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} \ |
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} \ |
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break; \
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default: \
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abort(); \ |
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} \ |
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} while (0) |
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#define MEMORY_LISTENER_CALL(_callback, _direction, _section, _args...) \
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do { \
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MemoryListener *_listener; \ |
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\ |
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switch (_direction) { \
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case Forward: \
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QTAILQ_FOREACH(_listener, &memory_listeners, link) { \
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if (_listener->_callback \
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&& memory_listener_match(_listener, _section)) { \
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_listener->_callback(_listener, _section, ##_args); \ |
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} \ |
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} \ |
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break; \
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case Reverse: \
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QTAILQ_FOREACH_REVERSE(_listener, &memory_listeners, \ |
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memory_listeners, link) { \
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if (_listener->_callback \
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&& memory_listener_match(_listener, _section)) { \
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_listener->_callback(_listener, _section, ##_args); \ |
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} \ |
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} \ |
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break; \
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default: \
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abort(); \ |
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} \ |
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} while (0) |
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|
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/* No need to ref/unref .mr, the FlatRange keeps it alive. */
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#define MEMORY_LISTENER_UPDATE_REGION(fr, as, dir, callback) \
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MEMORY_LISTENER_CALL(callback, dir, (&(MemoryRegionSection) { \
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.mr = (fr)->mr, \ |
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.address_space = (as), \ |
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.offset_within_region = (fr)->offset_in_region, \ |
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.size = (fr)->addr.size, \ |
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.offset_within_address_space = int128_get64((fr)->addr.start), \ |
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.readonly = (fr)->readonly, \ |
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})) |
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|
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struct CoalescedMemoryRange {
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AddrRange addr; |
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QTAILQ_ENTRY(CoalescedMemoryRange) link; |
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}; |
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|
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struct MemoryRegionIoeventfd {
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AddrRange addr; |
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bool match_data;
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uint64_t data; |
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EventNotifier *e; |
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}; |
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|
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static bool memory_region_ioeventfd_before(MemoryRegionIoeventfd a, |
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MemoryRegionIoeventfd b) |
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{
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if (int128_lt(a.addr.start, b.addr.start)) {
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return true; |
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} else if (int128_gt(a.addr.start, b.addr.start)) { |
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return false; |
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} else if (int128_lt(a.addr.size, b.addr.size)) { |
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return true; |
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} else if (int128_gt(a.addr.size, b.addr.size)) { |
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return false; |
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} else if (a.match_data < b.match_data) { |
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return true; |
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} else if (a.match_data > b.match_data) { |
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return false; |
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} else if (a.match_data) { |
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if (a.data < b.data) {
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return true; |
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} else if (a.data > b.data) { |
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return false; |
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} |
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} |
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if (a.e < b.e) {
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return true; |
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} else if (a.e > b.e) { |
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return false; |
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} |
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return false; |
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} |
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|
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static bool memory_region_ioeventfd_equal(MemoryRegionIoeventfd a, |
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MemoryRegionIoeventfd b) |
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{
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return !memory_region_ioeventfd_before(a, b)
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&& !memory_region_ioeventfd_before(b, a); |
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} |
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|
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typedef struct FlatRange FlatRange; |
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typedef struct FlatView FlatView; |
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|
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/* Range of memory in the global map. Addresses are absolute. */
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struct FlatRange {
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MemoryRegion *mr; |
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hwaddr offset_in_region; |
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AddrRange addr; |
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uint8_t dirty_log_mask; |
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bool romd_mode;
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bool readonly;
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}; |
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/* Flattened global view of current active memory hierarchy. Kept in sorted
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* order.
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*/
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struct FlatView {
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unsigned ref;
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FlatRange *ranges; |
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unsigned nr;
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unsigned nr_allocated;
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}; |
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|
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typedef struct AddressSpaceOps AddressSpaceOps; |
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|
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#define FOR_EACH_FLAT_RANGE(var, view) \
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for (var = (view)->ranges; var < (view)->ranges + (view)->nr; ++var)
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|
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static bool flatrange_equal(FlatRange *a, FlatRange *b) |
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{
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return a->mr == b->mr
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&& addrrange_equal(a->addr, b->addr) |
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&& a->offset_in_region == b->offset_in_region |
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&& a->romd_mode == b->romd_mode |
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&& a->readonly == b->readonly; |
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} |
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|
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static void flatview_init(FlatView *view) |
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{
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view->ref = 1;
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view->ranges = NULL;
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view->nr = 0;
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view->nr_allocated = 0;
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} |
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|
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/* Insert a range into a given position. Caller is responsible for maintaining
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* sorting order.
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*/
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static void flatview_insert(FlatView *view, unsigned pos, FlatRange *range) |
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{
|
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if (view->nr == view->nr_allocated) {
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view->nr_allocated = MAX(2 * view->nr, 10); |
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view->ranges = g_realloc(view->ranges, |
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view->nr_allocated * sizeof(*view->ranges));
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} |
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memmove(view->ranges + pos + 1, view->ranges + pos,
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(view->nr - pos) * sizeof(FlatRange));
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view->ranges[pos] = *range; |
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memory_region_ref(range->mr); |
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++view->nr; |
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} |
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|
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static void flatview_destroy(FlatView *view) |
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{
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int i;
|
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|
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for (i = 0; i < view->nr; i++) { |
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memory_region_unref(view->ranges[i].mr); |
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} |
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g_free(view->ranges); |
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g_free(view); |
| 297 |
} |
| 298 |
|
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static void flatview_ref(FlatView *view) |
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{
|
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atomic_inc(&view->ref); |
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} |
| 303 |
|
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static void flatview_unref(FlatView *view) |
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{
|
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if (atomic_fetch_dec(&view->ref) == 1) { |
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flatview_destroy(view); |
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} |
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} |
| 310 |
|
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static bool can_merge(FlatRange *r1, FlatRange *r2) |
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{
|
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return int128_eq(addrrange_end(r1->addr), r2->addr.start)
|
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&& r1->mr == r2->mr |
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&& int128_eq(int128_add(int128_make64(r1->offset_in_region), |
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r1->addr.size), |
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int128_make64(r2->offset_in_region)) |
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&& r1->dirty_log_mask == r2->dirty_log_mask |
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&& r1->romd_mode == r2->romd_mode |
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&& r1->readonly == r2->readonly; |
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} |
| 322 |
|
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/* Attempt to simplify a view by merging adjacent ranges */
|
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static void flatview_simplify(FlatView *view) |
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{
|
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unsigned i, j;
|
| 327 |
|
| 328 |
i = 0;
|
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while (i < view->nr) {
|
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j = i + 1;
|
| 331 |
while (j < view->nr
|
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&& can_merge(&view->ranges[j-1], &view->ranges[j])) {
|
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int128_addto(&view->ranges[i].addr.size, view->ranges[j].addr.size); |
| 334 |
++j; |
| 335 |
} |
| 336 |
++i; |
| 337 |
memmove(&view->ranges[i], &view->ranges[j], |
| 338 |
(view->nr - j) * sizeof(view->ranges[j]));
|
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view->nr -= j - i; |
| 340 |
} |
| 341 |
} |
| 342 |
|
| 343 |
static bool memory_region_big_endian(MemoryRegion *mr) |
| 344 |
{
|
| 345 |
#ifdef TARGET_WORDS_BIGENDIAN
|
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return mr->ops->endianness != DEVICE_LITTLE_ENDIAN;
|
| 347 |
#else
|
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return mr->ops->endianness == DEVICE_BIG_ENDIAN;
|
| 349 |
#endif
|
| 350 |
} |
| 351 |
|
| 352 |
static bool memory_region_wrong_endianness(MemoryRegion *mr) |
| 353 |
{
|
| 354 |
#ifdef TARGET_WORDS_BIGENDIAN
|
| 355 |
return mr->ops->endianness == DEVICE_LITTLE_ENDIAN;
|
| 356 |
#else
|
| 357 |
return mr->ops->endianness == DEVICE_BIG_ENDIAN;
|
| 358 |
#endif
|
| 359 |
} |
| 360 |
|
| 361 |
static void adjust_endianness(MemoryRegion *mr, uint64_t *data, unsigned size) |
| 362 |
{
|
| 363 |
if (memory_region_wrong_endianness(mr)) {
|
| 364 |
switch (size) {
|
| 365 |
case 1: |
| 366 |
break;
|
| 367 |
case 2: |
| 368 |
*data = bswap16(*data); |
| 369 |
break;
|
| 370 |
case 4: |
| 371 |
*data = bswap32(*data); |
| 372 |
break;
|
| 373 |
case 8: |
| 374 |
*data = bswap64(*data); |
| 375 |
break;
|
| 376 |
default:
|
| 377 |
abort(); |
| 378 |
} |
| 379 |
} |
| 380 |
} |
| 381 |
|
| 382 |
static void memory_region_oldmmio_read_accessor(MemoryRegion *mr, |
| 383 |
hwaddr addr, |
| 384 |
uint64_t *value, |
| 385 |
unsigned size,
|
| 386 |
unsigned shift,
|
| 387 |
uint64_t mask) |
| 388 |
{
|
| 389 |
uint64_t tmp; |
| 390 |
|
| 391 |
tmp = mr->ops->old_mmio.read[ctz32(size)](mr->opaque, addr); |
| 392 |
trace_memory_region_ops_read(mr, addr, tmp, size); |
| 393 |
*value |= (tmp & mask) << shift; |
| 394 |
} |
| 395 |
|
| 396 |
static void memory_region_read_accessor(MemoryRegion *mr, |
| 397 |
hwaddr addr, |
| 398 |
uint64_t *value, |
| 399 |
unsigned size,
|
| 400 |
unsigned shift,
|
| 401 |
uint64_t mask) |
| 402 |
{
|
| 403 |
uint64_t tmp; |
| 404 |
|
| 405 |
if (mr->flush_coalesced_mmio) {
|
| 406 |
qemu_flush_coalesced_mmio_buffer(); |
| 407 |
} |
| 408 |
tmp = mr->ops->read(mr->opaque, addr, size); |
| 409 |
trace_memory_region_ops_read(mr, addr, tmp, size); |
| 410 |
*value |= (tmp & mask) << shift; |
| 411 |
} |
| 412 |
|
| 413 |
static void memory_region_oldmmio_write_accessor(MemoryRegion *mr, |
| 414 |
hwaddr addr, |
| 415 |
uint64_t *value, |
| 416 |
unsigned size,
|
| 417 |
unsigned shift,
|
| 418 |
uint64_t mask) |
| 419 |
{
|
| 420 |
uint64_t tmp; |
| 421 |
|
| 422 |
tmp = (*value >> shift) & mask; |
| 423 |
trace_memory_region_ops_write(mr, addr, tmp, size); |
| 424 |
mr->ops->old_mmio.write[ctz32(size)](mr->opaque, addr, tmp); |
| 425 |
} |
| 426 |
|
| 427 |
static void memory_region_write_accessor(MemoryRegion *mr, |
| 428 |
hwaddr addr, |
| 429 |
uint64_t *value, |
| 430 |
unsigned size,
|
| 431 |
unsigned shift,
|
| 432 |
uint64_t mask) |
| 433 |
{
|
| 434 |
uint64_t tmp; |
| 435 |
|
| 436 |
if (mr->flush_coalesced_mmio) {
|
| 437 |
qemu_flush_coalesced_mmio_buffer(); |
| 438 |
} |
| 439 |
tmp = (*value >> shift) & mask; |
| 440 |
trace_memory_region_ops_write(mr, addr, tmp, size); |
| 441 |
mr->ops->write(mr->opaque, addr, tmp, size); |
| 442 |
} |
| 443 |
|
| 444 |
static void access_with_adjusted_size(hwaddr addr, |
| 445 |
uint64_t *value, |
| 446 |
unsigned size,
|
| 447 |
unsigned access_size_min,
|
| 448 |
unsigned access_size_max,
|
| 449 |
void (*access)(MemoryRegion *mr,
|
| 450 |
hwaddr addr, |
| 451 |
uint64_t *value, |
| 452 |
unsigned size,
|
| 453 |
unsigned shift,
|
| 454 |
uint64_t mask), |
| 455 |
MemoryRegion *mr) |
| 456 |
{
|
| 457 |
uint64_t access_mask; |
| 458 |
unsigned access_size;
|
| 459 |
unsigned i;
|
| 460 |
|
| 461 |
if (!access_size_min) {
|
| 462 |
access_size_min = 1;
|
| 463 |
} |
| 464 |
if (!access_size_max) {
|
| 465 |
access_size_max = 4;
|
| 466 |
} |
| 467 |
|
| 468 |
/* FIXME: support unaligned access? */
|
| 469 |
access_size = MAX(MIN(size, access_size_max), access_size_min); |
| 470 |
access_mask = -1ULL >> (64 - access_size * 8); |
| 471 |
if (memory_region_big_endian(mr)) {
|
| 472 |
for (i = 0; i < size; i += access_size) { |
| 473 |
access(mr, addr + i, value, access_size, |
| 474 |
(size - access_size - i) * 8, access_mask);
|
| 475 |
} |
| 476 |
} else {
|
| 477 |
for (i = 0; i < size; i += access_size) { |
| 478 |
access(mr, addr + i, value, access_size, i * 8, access_mask);
|
| 479 |
} |
| 480 |
} |
| 481 |
} |
| 482 |
|
| 483 |
static AddressSpace *memory_region_to_address_space(MemoryRegion *mr)
|
| 484 |
{
|
| 485 |
AddressSpace *as; |
| 486 |
|
| 487 |
while (mr->parent) {
|
| 488 |
mr = mr->parent; |
| 489 |
} |
| 490 |
QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
|
| 491 |
if (mr == as->root) {
|
| 492 |
return as;
|
| 493 |
} |
| 494 |
} |
| 495 |
abort(); |
| 496 |
} |
| 497 |
|
| 498 |
/* Render a memory region into the global view. Ranges in @view obscure
|
| 499 |
* ranges in @mr.
|
| 500 |
*/
|
| 501 |
static void render_memory_region(FlatView *view, |
| 502 |
MemoryRegion *mr, |
| 503 |
Int128 base, |
| 504 |
AddrRange clip, |
| 505 |
bool readonly)
|
| 506 |
{
|
| 507 |
MemoryRegion *subregion; |
| 508 |
unsigned i;
|
| 509 |
hwaddr offset_in_region; |
| 510 |
Int128 remain; |
| 511 |
Int128 now; |
| 512 |
FlatRange fr; |
| 513 |
AddrRange tmp; |
| 514 |
|
| 515 |
if (!mr->enabled) {
|
| 516 |
return;
|
| 517 |
} |
| 518 |
|
| 519 |
int128_addto(&base, int128_make64(mr->addr)); |
| 520 |
readonly |= mr->readonly; |
| 521 |
|
| 522 |
tmp = addrrange_make(base, mr->size); |
| 523 |
|
| 524 |
if (!addrrange_intersects(tmp, clip)) {
|
| 525 |
return;
|
| 526 |
} |
| 527 |
|
| 528 |
clip = addrrange_intersection(tmp, clip); |
| 529 |
|
| 530 |
if (mr->alias) {
|
| 531 |
int128_subfrom(&base, int128_make64(mr->alias->addr)); |
| 532 |
int128_subfrom(&base, int128_make64(mr->alias_offset)); |
| 533 |
render_memory_region(view, mr->alias, base, clip, readonly); |
| 534 |
return;
|
| 535 |
} |
| 536 |
|
| 537 |
/* Render subregions in priority order. */
|
| 538 |
QTAILQ_FOREACH(subregion, &mr->subregions, subregions_link) {
|
| 539 |
render_memory_region(view, subregion, base, clip, readonly); |
| 540 |
} |
| 541 |
|
| 542 |
if (!mr->terminates) {
|
| 543 |
return;
|
| 544 |
} |
| 545 |
|
| 546 |
offset_in_region = int128_get64(int128_sub(clip.start, base)); |
| 547 |
base = clip.start; |
| 548 |
remain = clip.size; |
| 549 |
|
| 550 |
fr.mr = mr; |
| 551 |
fr.dirty_log_mask = mr->dirty_log_mask; |
| 552 |
fr.romd_mode = mr->romd_mode; |
| 553 |
fr.readonly = readonly; |
| 554 |
|
| 555 |
/* Render the region itself into any gaps left by the current view. */
|
| 556 |
for (i = 0; i < view->nr && int128_nz(remain); ++i) { |
| 557 |
if (int128_ge(base, addrrange_end(view->ranges[i].addr))) {
|
| 558 |
continue;
|
| 559 |
} |
| 560 |
if (int128_lt(base, view->ranges[i].addr.start)) {
|
| 561 |
now = int128_min(remain, |
| 562 |
int128_sub(view->ranges[i].addr.start, base)); |
| 563 |
fr.offset_in_region = offset_in_region; |
| 564 |
fr.addr = addrrange_make(base, now); |
| 565 |
flatview_insert(view, i, &fr); |
| 566 |
++i; |
| 567 |
int128_addto(&base, now); |
| 568 |
offset_in_region += int128_get64(now); |
| 569 |
int128_subfrom(&remain, now); |
| 570 |
} |
| 571 |
now = int128_sub(int128_min(int128_add(base, remain), |
| 572 |
addrrange_end(view->ranges[i].addr)), |
| 573 |
base); |
| 574 |
int128_addto(&base, now); |
| 575 |
offset_in_region += int128_get64(now); |
| 576 |
int128_subfrom(&remain, now); |
| 577 |
} |
| 578 |
if (int128_nz(remain)) {
|
| 579 |
fr.offset_in_region = offset_in_region; |
| 580 |
fr.addr = addrrange_make(base, remain); |
| 581 |
flatview_insert(view, i, &fr); |
| 582 |
} |
| 583 |
} |
| 584 |
|
| 585 |
/* Render a memory topology into a list of disjoint absolute ranges. */
|
| 586 |
static FlatView *generate_memory_topology(MemoryRegion *mr)
|
| 587 |
{
|
| 588 |
FlatView *view; |
| 589 |
|
| 590 |
view = g_new(FlatView, 1);
|
| 591 |
flatview_init(view); |
| 592 |
|
| 593 |
if (mr) {
|
| 594 |
render_memory_region(view, mr, int128_zero(), |
| 595 |
addrrange_make(int128_zero(), int128_2_64()), false);
|
| 596 |
} |
| 597 |
flatview_simplify(view); |
| 598 |
|
| 599 |
return view;
|
| 600 |
} |
| 601 |
|
| 602 |
static void address_space_add_del_ioeventfds(AddressSpace *as, |
| 603 |
MemoryRegionIoeventfd *fds_new, |
| 604 |
unsigned fds_new_nb,
|
| 605 |
MemoryRegionIoeventfd *fds_old, |
| 606 |
unsigned fds_old_nb)
|
| 607 |
{
|
| 608 |
unsigned iold, inew;
|
| 609 |
MemoryRegionIoeventfd *fd; |
| 610 |
MemoryRegionSection section; |
| 611 |
|
| 612 |
/* Generate a symmetric difference of the old and new fd sets, adding
|
| 613 |
* and deleting as necessary.
|
| 614 |
*/
|
| 615 |
|
| 616 |
iold = inew = 0;
|
| 617 |
while (iold < fds_old_nb || inew < fds_new_nb) {
|
| 618 |
if (iold < fds_old_nb
|
| 619 |
&& (inew == fds_new_nb |
| 620 |
|| memory_region_ioeventfd_before(fds_old[iold], |
| 621 |
fds_new[inew]))) {
|
| 622 |
fd = &fds_old[iold]; |
| 623 |
section = (MemoryRegionSection) {
|
| 624 |
.address_space = as, |
| 625 |
.offset_within_address_space = int128_get64(fd->addr.start), |
| 626 |
.size = fd->addr.size, |
| 627 |
}; |
| 628 |
MEMORY_LISTENER_CALL(eventfd_del, Forward, §ion, |
| 629 |
fd->match_data, fd->data, fd->e); |
| 630 |
++iold; |
| 631 |
} else if (inew < fds_new_nb |
| 632 |
&& (iold == fds_old_nb |
| 633 |
|| memory_region_ioeventfd_before(fds_new[inew], |
| 634 |
fds_old[iold]))) {
|
| 635 |
fd = &fds_new[inew]; |
| 636 |
section = (MemoryRegionSection) {
|
| 637 |
.address_space = as, |
| 638 |
.offset_within_address_space = int128_get64(fd->addr.start), |
| 639 |
.size = fd->addr.size, |
| 640 |
}; |
| 641 |
MEMORY_LISTENER_CALL(eventfd_add, Reverse, §ion, |
| 642 |
fd->match_data, fd->data, fd->e); |
| 643 |
++inew; |
| 644 |
} else {
|
| 645 |
++iold; |
| 646 |
++inew; |
| 647 |
} |
| 648 |
} |
| 649 |
} |
| 650 |
|
| 651 |
static FlatView *address_space_get_flatview(AddressSpace *as)
|
| 652 |
{
|
| 653 |
FlatView *view; |
| 654 |
|
| 655 |
qemu_mutex_lock(&flat_view_mutex); |
| 656 |
view = as->current_map; |
| 657 |
flatview_ref(view); |
| 658 |
qemu_mutex_unlock(&flat_view_mutex); |
| 659 |
return view;
|
| 660 |
} |
| 661 |
|
| 662 |
static void address_space_update_ioeventfds(AddressSpace *as) |
| 663 |
{
|
| 664 |
FlatView *view; |
| 665 |
FlatRange *fr; |
| 666 |
unsigned ioeventfd_nb = 0; |
| 667 |
MemoryRegionIoeventfd *ioeventfds = NULL;
|
| 668 |
AddrRange tmp; |
| 669 |
unsigned i;
|
| 670 |
|
| 671 |
view = address_space_get_flatview(as); |
| 672 |
FOR_EACH_FLAT_RANGE(fr, view) {
|
| 673 |
for (i = 0; i < fr->mr->ioeventfd_nb; ++i) { |
| 674 |
tmp = addrrange_shift(fr->mr->ioeventfds[i].addr, |
| 675 |
int128_sub(fr->addr.start, |
| 676 |
int128_make64(fr->offset_in_region))); |
| 677 |
if (addrrange_intersects(fr->addr, tmp)) {
|
| 678 |
++ioeventfd_nb; |
| 679 |
ioeventfds = g_realloc(ioeventfds, |
| 680 |
ioeventfd_nb * sizeof(*ioeventfds));
|
| 681 |
ioeventfds[ioeventfd_nb-1] = fr->mr->ioeventfds[i];
|
| 682 |
ioeventfds[ioeventfd_nb-1].addr = tmp;
|
| 683 |
} |
| 684 |
} |
| 685 |
} |
| 686 |
|
| 687 |
address_space_add_del_ioeventfds(as, ioeventfds, ioeventfd_nb, |
| 688 |
as->ioeventfds, as->ioeventfd_nb); |
| 689 |
|
| 690 |
g_free(as->ioeventfds); |
| 691 |
as->ioeventfds = ioeventfds; |
| 692 |
as->ioeventfd_nb = ioeventfd_nb; |
| 693 |
flatview_unref(view); |
| 694 |
} |
| 695 |
|
| 696 |
static void address_space_update_topology_pass(AddressSpace *as, |
| 697 |
const FlatView *old_view,
|
| 698 |
const FlatView *new_view,
|
| 699 |
bool adding)
|
| 700 |
{
|
| 701 |
unsigned iold, inew;
|
| 702 |
FlatRange *frold, *frnew; |
| 703 |
|
| 704 |
/* Generate a symmetric difference of the old and new memory maps.
|
| 705 |
* Kill ranges in the old map, and instantiate ranges in the new map.
|
| 706 |
*/
|
| 707 |
iold = inew = 0;
|
| 708 |
while (iold < old_view->nr || inew < new_view->nr) {
|
| 709 |
if (iold < old_view->nr) {
|
| 710 |
frold = &old_view->ranges[iold]; |
| 711 |
} else {
|
| 712 |
frold = NULL;
|
| 713 |
} |
| 714 |
if (inew < new_view->nr) {
|
| 715 |
frnew = &new_view->ranges[inew]; |
| 716 |
} else {
|
| 717 |
frnew = NULL;
|
| 718 |
} |
| 719 |
|
| 720 |
if (frold
|
| 721 |
&& (!frnew |
| 722 |
|| int128_lt(frold->addr.start, frnew->addr.start) |
| 723 |
|| (int128_eq(frold->addr.start, frnew->addr.start) |
| 724 |
&& !flatrange_equal(frold, frnew)))) {
|
| 725 |
/* In old but not in new, or in both but attributes changed. */
|
| 726 |
|
| 727 |
if (!adding) {
|
| 728 |
MEMORY_LISTENER_UPDATE_REGION(frold, as, Reverse, region_del); |
| 729 |
} |
| 730 |
|
| 731 |
++iold; |
| 732 |
} else if (frold && frnew && flatrange_equal(frold, frnew)) { |
| 733 |
/* In both and unchanged (except logging may have changed) */
|
| 734 |
|
| 735 |
if (adding) {
|
| 736 |
MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, region_nop); |
| 737 |
if (frold->dirty_log_mask && !frnew->dirty_log_mask) {
|
| 738 |
MEMORY_LISTENER_UPDATE_REGION(frnew, as, Reverse, log_stop); |
| 739 |
} else if (frnew->dirty_log_mask && !frold->dirty_log_mask) { |
| 740 |
MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, log_start); |
| 741 |
} |
| 742 |
} |
| 743 |
|
| 744 |
++iold; |
| 745 |
++inew; |
| 746 |
} else {
|
| 747 |
/* In new */
|
| 748 |
|
| 749 |
if (adding) {
|
| 750 |
MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, region_add); |
| 751 |
} |
| 752 |
|
| 753 |
++inew; |
| 754 |
} |
| 755 |
} |
| 756 |
} |
| 757 |
|
| 758 |
|
| 759 |
static void address_space_update_topology(AddressSpace *as) |
| 760 |
{
|
| 761 |
FlatView *old_view = address_space_get_flatview(as); |
| 762 |
FlatView *new_view = generate_memory_topology(as->root); |
| 763 |
|
| 764 |
address_space_update_topology_pass(as, old_view, new_view, false);
|
| 765 |
address_space_update_topology_pass(as, old_view, new_view, true);
|
| 766 |
|
| 767 |
qemu_mutex_lock(&flat_view_mutex); |
| 768 |
flatview_unref(as->current_map); |
| 769 |
as->current_map = new_view; |
| 770 |
qemu_mutex_unlock(&flat_view_mutex); |
| 771 |
|
| 772 |
/* Note that all the old MemoryRegions are still alive up to this
|
| 773 |
* point. This relieves most MemoryListeners from the need to
|
| 774 |
* ref/unref the MemoryRegions they get---unless they use them
|
| 775 |
* outside the iothread mutex, in which case precise reference
|
| 776 |
* counting is necessary.
|
| 777 |
*/
|
| 778 |
flatview_unref(old_view); |
| 779 |
|
| 780 |
address_space_update_ioeventfds(as); |
| 781 |
} |
| 782 |
|
| 783 |
void memory_region_transaction_begin(void) |
| 784 |
{
|
| 785 |
qemu_flush_coalesced_mmio_buffer(); |
| 786 |
++memory_region_transaction_depth; |
| 787 |
} |
| 788 |
|
| 789 |
void memory_region_transaction_commit(void) |
| 790 |
{
|
| 791 |
AddressSpace *as; |
| 792 |
|
| 793 |
assert(memory_region_transaction_depth); |
| 794 |
--memory_region_transaction_depth; |
| 795 |
if (!memory_region_transaction_depth && memory_region_update_pending) {
|
| 796 |
memory_region_update_pending = false;
|
| 797 |
MEMORY_LISTENER_CALL_GLOBAL(begin, Forward); |
| 798 |
|
| 799 |
QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
|
| 800 |
address_space_update_topology(as); |
| 801 |
} |
| 802 |
|
| 803 |
MEMORY_LISTENER_CALL_GLOBAL(commit, Forward); |
| 804 |
} |
| 805 |
} |
| 806 |
|
| 807 |
static void memory_region_destructor_none(MemoryRegion *mr) |
| 808 |
{
|
| 809 |
} |
| 810 |
|
| 811 |
static void memory_region_destructor_ram(MemoryRegion *mr) |
| 812 |
{
|
| 813 |
qemu_ram_free(mr->ram_addr); |
| 814 |
} |
| 815 |
|
| 816 |
static void memory_region_destructor_alias(MemoryRegion *mr) |
| 817 |
{
|
| 818 |
memory_region_unref(mr->alias); |
| 819 |
} |
| 820 |
|
| 821 |
static void memory_region_destructor_ram_from_ptr(MemoryRegion *mr) |
| 822 |
{
|
| 823 |
qemu_ram_free_from_ptr(mr->ram_addr); |
| 824 |
} |
| 825 |
|
| 826 |
static void memory_region_destructor_rom_device(MemoryRegion *mr) |
| 827 |
{
|
| 828 |
qemu_ram_free(mr->ram_addr & TARGET_PAGE_MASK); |
| 829 |
} |
| 830 |
|
| 831 |
void memory_region_init(MemoryRegion *mr,
|
| 832 |
Object *owner, |
| 833 |
const char *name, |
| 834 |
uint64_t size) |
| 835 |
{
|
| 836 |
mr->ops = &unassigned_mem_ops; |
| 837 |
mr->opaque = NULL;
|
| 838 |
mr->owner = owner; |
| 839 |
mr->iommu_ops = NULL;
|
| 840 |
mr->parent = NULL;
|
| 841 |
mr->size = int128_make64(size); |
| 842 |
if (size == UINT64_MAX) {
|
| 843 |
mr->size = int128_2_64(); |
| 844 |
} |
| 845 |
mr->addr = 0;
|
| 846 |
mr->subpage = false;
|
| 847 |
mr->enabled = true;
|
| 848 |
mr->terminates = false;
|
| 849 |
mr->ram = false;
|
| 850 |
mr->romd_mode = true;
|
| 851 |
mr->readonly = false;
|
| 852 |
mr->rom_device = false;
|
| 853 |
mr->destructor = memory_region_destructor_none; |
| 854 |
mr->priority = 0;
|
| 855 |
mr->may_overlap = false;
|
| 856 |
mr->alias = NULL;
|
| 857 |
QTAILQ_INIT(&mr->subregions); |
| 858 |
memset(&mr->subregions_link, 0, sizeof mr->subregions_link); |
| 859 |
QTAILQ_INIT(&mr->coalesced); |
| 860 |
mr->name = g_strdup(name); |
| 861 |
mr->dirty_log_mask = 0;
|
| 862 |
mr->ioeventfd_nb = 0;
|
| 863 |
mr->ioeventfds = NULL;
|
| 864 |
mr->flush_coalesced_mmio = false;
|
| 865 |
} |
| 866 |
|
| 867 |
static uint64_t unassigned_mem_read(void *opaque, hwaddr addr, |
| 868 |
unsigned size)
|
| 869 |
{
|
| 870 |
#ifdef DEBUG_UNASSIGNED
|
| 871 |
printf("Unassigned mem read " TARGET_FMT_plx "\n", addr); |
| 872 |
#endif
|
| 873 |
if (current_cpu != NULL) { |
| 874 |
cpu_unassigned_access(current_cpu, addr, false, false, 0, size); |
| 875 |
} |
| 876 |
return 0; |
| 877 |
} |
| 878 |
|
| 879 |
static void unassigned_mem_write(void *opaque, hwaddr addr, |
| 880 |
uint64_t val, unsigned size)
|
| 881 |
{
|
| 882 |
#ifdef DEBUG_UNASSIGNED
|
| 883 |
printf("Unassigned mem write " TARGET_FMT_plx " = 0x%"PRIx64"\n", addr, val); |
| 884 |
#endif
|
| 885 |
if (current_cpu != NULL) { |
| 886 |
cpu_unassigned_access(current_cpu, addr, true, false, 0, size); |
| 887 |
} |
| 888 |
} |
| 889 |
|
| 890 |
static bool unassigned_mem_accepts(void *opaque, hwaddr addr, |
| 891 |
unsigned size, bool is_write) |
| 892 |
{
|
| 893 |
return false; |
| 894 |
} |
| 895 |
|
| 896 |
const MemoryRegionOps unassigned_mem_ops = {
|
| 897 |
.valid.accepts = unassigned_mem_accepts, |
| 898 |
.endianness = DEVICE_NATIVE_ENDIAN, |
| 899 |
}; |
| 900 |
|
| 901 |
bool memory_region_access_valid(MemoryRegion *mr,
|
| 902 |
hwaddr addr, |
| 903 |
unsigned size,
|
| 904 |
bool is_write)
|
| 905 |
{
|
| 906 |
int access_size_min, access_size_max;
|
| 907 |
int access_size, i;
|
| 908 |
|
| 909 |
if (!mr->ops->valid.unaligned && (addr & (size - 1))) { |
| 910 |
return false; |
| 911 |
} |
| 912 |
|
| 913 |
if (!mr->ops->valid.accepts) {
|
| 914 |
return true; |
| 915 |
} |
| 916 |
|
| 917 |
access_size_min = mr->ops->valid.min_access_size; |
| 918 |
if (!mr->ops->valid.min_access_size) {
|
| 919 |
access_size_min = 1;
|
| 920 |
} |
| 921 |
|
| 922 |
access_size_max = mr->ops->valid.max_access_size; |
| 923 |
if (!mr->ops->valid.max_access_size) {
|
| 924 |
access_size_max = 4;
|
| 925 |
} |
| 926 |
|
| 927 |
access_size = MAX(MIN(size, access_size_max), access_size_min); |
| 928 |
for (i = 0; i < size; i += access_size) { |
| 929 |
if (!mr->ops->valid.accepts(mr->opaque, addr + i, access_size,
|
| 930 |
is_write)) {
|
| 931 |
return false; |
| 932 |
} |
| 933 |
} |
| 934 |
|
| 935 |
return true; |
| 936 |
} |
| 937 |
|
| 938 |
static uint64_t memory_region_dispatch_read1(MemoryRegion *mr,
|
| 939 |
hwaddr addr, |
| 940 |
unsigned size)
|
| 941 |
{
|
| 942 |
uint64_t data = 0;
|
| 943 |
|
| 944 |
if (mr->ops->read) {
|
| 945 |
access_with_adjusted_size(addr, &data, size, |
| 946 |
mr->ops->impl.min_access_size, |
| 947 |
mr->ops->impl.max_access_size, |
| 948 |
memory_region_read_accessor, mr); |
| 949 |
} else {
|
| 950 |
access_with_adjusted_size(addr, &data, size, 1, 4, |
| 951 |
memory_region_oldmmio_read_accessor, mr); |
| 952 |
} |
| 953 |
|
| 954 |
return data;
|
| 955 |
} |
| 956 |
|
| 957 |
static bool memory_region_dispatch_read(MemoryRegion *mr, |
| 958 |
hwaddr addr, |
| 959 |
uint64_t *pval, |
| 960 |
unsigned size)
|
| 961 |
{
|
| 962 |
if (!memory_region_access_valid(mr, addr, size, false)) { |
| 963 |
*pval = unassigned_mem_read(mr, addr, size); |
| 964 |
return true; |
| 965 |
} |
| 966 |
|
| 967 |
*pval = memory_region_dispatch_read1(mr, addr, size); |
| 968 |
adjust_endianness(mr, pval, size); |
| 969 |
return false; |
| 970 |
} |
| 971 |
|
| 972 |
static bool memory_region_dispatch_write(MemoryRegion *mr, |
| 973 |
hwaddr addr, |
| 974 |
uint64_t data, |
| 975 |
unsigned size)
|
| 976 |
{
|
| 977 |
if (!memory_region_access_valid(mr, addr, size, true)) { |
| 978 |
unassigned_mem_write(mr, addr, data, size); |
| 979 |
return true; |
| 980 |
} |
| 981 |
|
| 982 |
adjust_endianness(mr, &data, size); |
| 983 |
|
| 984 |
if (mr->ops->write) {
|
| 985 |
access_with_adjusted_size(addr, &data, size, |
| 986 |
mr->ops->impl.min_access_size, |
| 987 |
mr->ops->impl.max_access_size, |
| 988 |
memory_region_write_accessor, mr); |
| 989 |
} else {
|
| 990 |
access_with_adjusted_size(addr, &data, size, 1, 4, |
| 991 |
memory_region_oldmmio_write_accessor, mr); |
| 992 |
} |
| 993 |
return false; |
| 994 |
} |
| 995 |
|
| 996 |
void memory_region_init_io(MemoryRegion *mr,
|
| 997 |
Object *owner, |
| 998 |
const MemoryRegionOps *ops,
|
| 999 |
void *opaque,
|
| 1000 |
const char *name, |
| 1001 |
uint64_t size) |
| 1002 |
{
|
| 1003 |
memory_region_init(mr, owner, name, size); |
| 1004 |
mr->ops = ops; |
| 1005 |
mr->opaque = opaque; |
| 1006 |
mr->terminates = true;
|
| 1007 |
mr->ram_addr = ~(ram_addr_t)0;
|
| 1008 |
} |
| 1009 |
|
| 1010 |
void memory_region_init_ram(MemoryRegion *mr,
|
| 1011 |
Object *owner, |
| 1012 |
const char *name, |
| 1013 |
uint64_t size) |
| 1014 |
{
|
| 1015 |
memory_region_init(mr, owner, name, size); |
| 1016 |
mr->ram = true;
|
| 1017 |
mr->terminates = true;
|
| 1018 |
mr->destructor = memory_region_destructor_ram; |
| 1019 |
mr->ram_addr = qemu_ram_alloc(size, mr); |
| 1020 |
} |
| 1021 |
|
| 1022 |
void memory_region_init_ram_ptr(MemoryRegion *mr,
|
| 1023 |
Object *owner, |
| 1024 |
const char *name, |
| 1025 |
uint64_t size, |
| 1026 |
void *ptr)
|
| 1027 |
{
|
| 1028 |
memory_region_init(mr, owner, name, size); |
| 1029 |
mr->ram = true;
|
| 1030 |
mr->terminates = true;
|
| 1031 |
mr->destructor = memory_region_destructor_ram_from_ptr; |
| 1032 |
mr->ram_addr = qemu_ram_alloc_from_ptr(size, ptr, mr); |
| 1033 |
} |
| 1034 |
|
| 1035 |
void memory_region_init_alias(MemoryRegion *mr,
|
| 1036 |
Object *owner, |
| 1037 |
const char *name, |
| 1038 |
MemoryRegion *orig, |
| 1039 |
hwaddr offset, |
| 1040 |
uint64_t size) |
| 1041 |
{
|
| 1042 |
memory_region_init(mr, owner, name, size); |
| 1043 |
memory_region_ref(orig); |
| 1044 |
mr->destructor = memory_region_destructor_alias; |
| 1045 |
mr->alias = orig; |
| 1046 |
mr->alias_offset = offset; |
| 1047 |
} |
| 1048 |
|
| 1049 |
void memory_region_init_rom_device(MemoryRegion *mr,
|
| 1050 |
Object *owner, |
| 1051 |
const MemoryRegionOps *ops,
|
| 1052 |
void *opaque,
|
| 1053 |
const char *name, |
| 1054 |
uint64_t size) |
| 1055 |
{
|
| 1056 |
memory_region_init(mr, owner, name, size); |
| 1057 |
mr->ops = ops; |
| 1058 |
mr->opaque = opaque; |
| 1059 |
mr->terminates = true;
|
| 1060 |
mr->rom_device = true;
|
| 1061 |
mr->destructor = memory_region_destructor_rom_device; |
| 1062 |
mr->ram_addr = qemu_ram_alloc(size, mr); |
| 1063 |
} |
| 1064 |
|
| 1065 |
void memory_region_init_iommu(MemoryRegion *mr,
|
| 1066 |
Object *owner, |
| 1067 |
const MemoryRegionIOMMUOps *ops,
|
| 1068 |
const char *name, |
| 1069 |
uint64_t size) |
| 1070 |
{
|
| 1071 |
memory_region_init(mr, owner, name, size); |
| 1072 |
mr->iommu_ops = ops, |
| 1073 |
mr->terminates = true; /* then re-forwards */ |
| 1074 |
notifier_list_init(&mr->iommu_notify); |
| 1075 |
} |
| 1076 |
|
| 1077 |
void memory_region_init_reservation(MemoryRegion *mr,
|
| 1078 |
Object *owner, |
| 1079 |
const char *name, |
| 1080 |
uint64_t size) |
| 1081 |
{
|
| 1082 |
memory_region_init_io(mr, owner, &unassigned_mem_ops, mr, name, size); |
| 1083 |
} |
| 1084 |
|
| 1085 |
void memory_region_destroy(MemoryRegion *mr)
|
| 1086 |
{
|
| 1087 |
assert(QTAILQ_EMPTY(&mr->subregions)); |
| 1088 |
assert(memory_region_transaction_depth == 0);
|
| 1089 |
mr->destructor(mr); |
| 1090 |
memory_region_clear_coalescing(mr); |
| 1091 |
g_free((char *)mr->name);
|
| 1092 |
g_free(mr->ioeventfds); |
| 1093 |
} |
| 1094 |
|
| 1095 |
Object *memory_region_owner(MemoryRegion *mr) |
| 1096 |
{
|
| 1097 |
return mr->owner;
|
| 1098 |
} |
| 1099 |
|
| 1100 |
void memory_region_ref(MemoryRegion *mr)
|
| 1101 |
{
|
| 1102 |
if (mr && mr->owner) {
|
| 1103 |
object_ref(mr->owner); |
| 1104 |
} |
| 1105 |
} |
| 1106 |
|
| 1107 |
void memory_region_unref(MemoryRegion *mr)
|
| 1108 |
{
|
| 1109 |
if (mr && mr->owner) {
|
| 1110 |
object_unref(mr->owner); |
| 1111 |
} |
| 1112 |
} |
| 1113 |
|
| 1114 |
uint64_t memory_region_size(MemoryRegion *mr) |
| 1115 |
{
|
| 1116 |
if (int128_eq(mr->size, int128_2_64())) {
|
| 1117 |
return UINT64_MAX;
|
| 1118 |
} |
| 1119 |
return int128_get64(mr->size);
|
| 1120 |
} |
| 1121 |
|
| 1122 |
const char *memory_region_name(MemoryRegion *mr) |
| 1123 |
{
|
| 1124 |
return mr->name;
|
| 1125 |
} |
| 1126 |
|
| 1127 |
bool memory_region_is_ram(MemoryRegion *mr)
|
| 1128 |
{
|
| 1129 |
return mr->ram;
|
| 1130 |
} |
| 1131 |
|
| 1132 |
bool memory_region_is_logging(MemoryRegion *mr)
|
| 1133 |
{
|
| 1134 |
return mr->dirty_log_mask;
|
| 1135 |
} |
| 1136 |
|
| 1137 |
bool memory_region_is_rom(MemoryRegion *mr)
|
| 1138 |
{
|
| 1139 |
return mr->ram && mr->readonly;
|
| 1140 |
} |
| 1141 |
|
| 1142 |
bool memory_region_is_iommu(MemoryRegion *mr)
|
| 1143 |
{
|
| 1144 |
return mr->iommu_ops;
|
| 1145 |
} |
| 1146 |
|
| 1147 |
void memory_region_register_iommu_notifier(MemoryRegion *mr, Notifier *n)
|
| 1148 |
{
|
| 1149 |
notifier_list_add(&mr->iommu_notify, n); |
| 1150 |
} |
| 1151 |
|
| 1152 |
void memory_region_unregister_iommu_notifier(Notifier *n)
|
| 1153 |
{
|
| 1154 |
notifier_remove(n); |
| 1155 |
} |
| 1156 |
|
| 1157 |
void memory_region_notify_iommu(MemoryRegion *mr,
|
| 1158 |
IOMMUTLBEntry entry) |
| 1159 |
{
|
| 1160 |
assert(memory_region_is_iommu(mr)); |
| 1161 |
notifier_list_notify(&mr->iommu_notify, &entry); |
| 1162 |
} |
| 1163 |
|
| 1164 |
void memory_region_set_log(MemoryRegion *mr, bool log, unsigned client) |
| 1165 |
{
|
| 1166 |
uint8_t mask = 1 << client;
|
| 1167 |
|
| 1168 |
memory_region_transaction_begin(); |
| 1169 |
mr->dirty_log_mask = (mr->dirty_log_mask & ~mask) | (log * mask); |
| 1170 |
memory_region_update_pending |= mr->enabled; |
| 1171 |
memory_region_transaction_commit(); |
| 1172 |
} |
| 1173 |
|
| 1174 |
bool memory_region_get_dirty(MemoryRegion *mr, hwaddr addr,
|
| 1175 |
hwaddr size, unsigned client)
|
| 1176 |
{
|
| 1177 |
assert(mr->terminates); |
| 1178 |
return cpu_physical_memory_get_dirty(mr->ram_addr + addr, size, client);
|
| 1179 |
} |
| 1180 |
|
| 1181 |
void memory_region_set_dirty(MemoryRegion *mr, hwaddr addr,
|
| 1182 |
hwaddr size) |
| 1183 |
{
|
| 1184 |
assert(mr->terminates); |
| 1185 |
cpu_physical_memory_set_dirty_range(mr->ram_addr + addr, size); |
| 1186 |
} |
| 1187 |
|
| 1188 |
bool memory_region_test_and_clear_dirty(MemoryRegion *mr, hwaddr addr,
|
| 1189 |
hwaddr size, unsigned client)
|
| 1190 |
{
|
| 1191 |
bool ret;
|
| 1192 |
assert(mr->terminates); |
| 1193 |
ret = cpu_physical_memory_get_dirty(mr->ram_addr + addr, size, client); |
| 1194 |
if (ret) {
|
| 1195 |
cpu_physical_memory_reset_dirty(mr->ram_addr + addr, size, client); |
| 1196 |
} |
| 1197 |
return ret;
|
| 1198 |
} |
| 1199 |
|
| 1200 |
|
| 1201 |
void memory_region_sync_dirty_bitmap(MemoryRegion *mr)
|
| 1202 |
{
|
| 1203 |
AddressSpace *as; |
| 1204 |
FlatRange *fr; |
| 1205 |
|
| 1206 |
QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
|
| 1207 |
FlatView *view = address_space_get_flatview(as); |
| 1208 |
FOR_EACH_FLAT_RANGE(fr, view) {
|
| 1209 |
if (fr->mr == mr) {
|
| 1210 |
MEMORY_LISTENER_UPDATE_REGION(fr, as, Forward, log_sync); |
| 1211 |
} |
| 1212 |
} |
| 1213 |
flatview_unref(view); |
| 1214 |
} |
| 1215 |
} |
| 1216 |
|
| 1217 |
void memory_region_set_readonly(MemoryRegion *mr, bool readonly) |
| 1218 |
{
|
| 1219 |
if (mr->readonly != readonly) {
|
| 1220 |
memory_region_transaction_begin(); |
| 1221 |
mr->readonly = readonly; |
| 1222 |
memory_region_update_pending |= mr->enabled; |
| 1223 |
memory_region_transaction_commit(); |
| 1224 |
} |
| 1225 |
} |
| 1226 |
|
| 1227 |
void memory_region_rom_device_set_romd(MemoryRegion *mr, bool romd_mode) |
| 1228 |
{
|
| 1229 |
if (mr->romd_mode != romd_mode) {
|
| 1230 |
memory_region_transaction_begin(); |
| 1231 |
mr->romd_mode = romd_mode; |
| 1232 |
memory_region_update_pending |= mr->enabled; |
| 1233 |
memory_region_transaction_commit(); |
| 1234 |
} |
| 1235 |
} |
| 1236 |
|
| 1237 |
void memory_region_reset_dirty(MemoryRegion *mr, hwaddr addr,
|
| 1238 |
hwaddr size, unsigned client)
|
| 1239 |
{
|
| 1240 |
assert(mr->terminates); |
| 1241 |
cpu_physical_memory_reset_dirty(mr->ram_addr + addr, size, client); |
| 1242 |
} |
| 1243 |
|
| 1244 |
void *memory_region_get_ram_ptr(MemoryRegion *mr)
|
| 1245 |
{
|
| 1246 |
if (mr->alias) {
|
| 1247 |
return memory_region_get_ram_ptr(mr->alias) + mr->alias_offset;
|
| 1248 |
} |
| 1249 |
|
| 1250 |
assert(mr->terminates); |
| 1251 |
|
| 1252 |
return qemu_get_ram_ptr(mr->ram_addr & TARGET_PAGE_MASK);
|
| 1253 |
} |
| 1254 |
|
| 1255 |
static void memory_region_update_coalesced_range_as(MemoryRegion *mr, AddressSpace *as) |
| 1256 |
{
|
| 1257 |
FlatView *view; |
| 1258 |
FlatRange *fr; |
| 1259 |
CoalescedMemoryRange *cmr; |
| 1260 |
AddrRange tmp; |
| 1261 |
MemoryRegionSection section; |
| 1262 |
|
| 1263 |
view = address_space_get_flatview(as); |
| 1264 |
FOR_EACH_FLAT_RANGE(fr, view) {
|
| 1265 |
if (fr->mr == mr) {
|
| 1266 |
section = (MemoryRegionSection) {
|
| 1267 |
.address_space = as, |
| 1268 |
.offset_within_address_space = int128_get64(fr->addr.start), |
| 1269 |
.size = fr->addr.size, |
| 1270 |
}; |
| 1271 |
|
| 1272 |
MEMORY_LISTENER_CALL(coalesced_mmio_del, Reverse, §ion, |
| 1273 |
int128_get64(fr->addr.start), |
| 1274 |
int128_get64(fr->addr.size)); |
| 1275 |
QTAILQ_FOREACH(cmr, &mr->coalesced, link) {
|
| 1276 |
tmp = addrrange_shift(cmr->addr, |
| 1277 |
int128_sub(fr->addr.start, |
| 1278 |
int128_make64(fr->offset_in_region))); |
| 1279 |
if (!addrrange_intersects(tmp, fr->addr)) {
|
| 1280 |
continue;
|
| 1281 |
} |
| 1282 |
tmp = addrrange_intersection(tmp, fr->addr); |
| 1283 |
MEMORY_LISTENER_CALL(coalesced_mmio_add, Forward, §ion, |
| 1284 |
int128_get64(tmp.start), |
| 1285 |
int128_get64(tmp.size)); |
| 1286 |
} |
| 1287 |
} |
| 1288 |
} |
| 1289 |
flatview_unref(view); |
| 1290 |
} |
| 1291 |
|
| 1292 |
static void memory_region_update_coalesced_range(MemoryRegion *mr) |
| 1293 |
{
|
| 1294 |
AddressSpace *as; |
| 1295 |
|
| 1296 |
QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
|
| 1297 |
memory_region_update_coalesced_range_as(mr, as); |
| 1298 |
} |
| 1299 |
} |
| 1300 |
|
| 1301 |
void memory_region_set_coalescing(MemoryRegion *mr)
|
| 1302 |
{
|
| 1303 |
memory_region_clear_coalescing(mr); |
| 1304 |
memory_region_add_coalescing(mr, 0, int128_get64(mr->size));
|
| 1305 |
} |
| 1306 |
|
| 1307 |
void memory_region_add_coalescing(MemoryRegion *mr,
|
| 1308 |
hwaddr offset, |
| 1309 |
uint64_t size) |
| 1310 |
{
|
| 1311 |
CoalescedMemoryRange *cmr = g_malloc(sizeof(*cmr));
|
| 1312 |
|
| 1313 |
cmr->addr = addrrange_make(int128_make64(offset), int128_make64(size)); |
| 1314 |
QTAILQ_INSERT_TAIL(&mr->coalesced, cmr, link); |
| 1315 |
memory_region_update_coalesced_range(mr); |
| 1316 |
memory_region_set_flush_coalesced(mr); |
| 1317 |
} |
| 1318 |
|
| 1319 |
void memory_region_clear_coalescing(MemoryRegion *mr)
|
| 1320 |
{
|
| 1321 |
CoalescedMemoryRange *cmr; |
| 1322 |
|
| 1323 |
qemu_flush_coalesced_mmio_buffer(); |
| 1324 |
mr->flush_coalesced_mmio = false;
|
| 1325 |
|
| 1326 |
while (!QTAILQ_EMPTY(&mr->coalesced)) {
|
| 1327 |
cmr = QTAILQ_FIRST(&mr->coalesced); |
| 1328 |
QTAILQ_REMOVE(&mr->coalesced, cmr, link); |
| 1329 |
g_free(cmr); |
| 1330 |
} |
| 1331 |
memory_region_update_coalesced_range(mr); |
| 1332 |
} |
| 1333 |
|
| 1334 |
void memory_region_set_flush_coalesced(MemoryRegion *mr)
|
| 1335 |
{
|
| 1336 |
mr->flush_coalesced_mmio = true;
|
| 1337 |
} |
| 1338 |
|
| 1339 |
void memory_region_clear_flush_coalesced(MemoryRegion *mr)
|
| 1340 |
{
|
| 1341 |
qemu_flush_coalesced_mmio_buffer(); |
| 1342 |
if (QTAILQ_EMPTY(&mr->coalesced)) {
|
| 1343 |
mr->flush_coalesced_mmio = false;
|
| 1344 |
} |
| 1345 |
} |
| 1346 |
|
| 1347 |
void memory_region_add_eventfd(MemoryRegion *mr,
|
| 1348 |
hwaddr addr, |
| 1349 |
unsigned size,
|
| 1350 |
bool match_data,
|
| 1351 |
uint64_t data, |
| 1352 |
EventNotifier *e) |
| 1353 |
{
|
| 1354 |
MemoryRegionIoeventfd mrfd = {
|
| 1355 |
.addr.start = int128_make64(addr), |
| 1356 |
.addr.size = int128_make64(size), |
| 1357 |
.match_data = match_data, |
| 1358 |
.data = data, |
| 1359 |
.e = e, |
| 1360 |
}; |
| 1361 |
unsigned i;
|
| 1362 |
|
| 1363 |
adjust_endianness(mr, &mrfd.data, size); |
| 1364 |
memory_region_transaction_begin(); |
| 1365 |
for (i = 0; i < mr->ioeventfd_nb; ++i) { |
| 1366 |
if (memory_region_ioeventfd_before(mrfd, mr->ioeventfds[i])) {
|
| 1367 |
break;
|
| 1368 |
} |
| 1369 |
} |
| 1370 |
++mr->ioeventfd_nb; |
| 1371 |
mr->ioeventfds = g_realloc(mr->ioeventfds, |
| 1372 |
sizeof(*mr->ioeventfds) * mr->ioeventfd_nb);
|
| 1373 |
memmove(&mr->ioeventfds[i+1], &mr->ioeventfds[i],
|
| 1374 |
sizeof(*mr->ioeventfds) * (mr->ioeventfd_nb-1 - i)); |
| 1375 |
mr->ioeventfds[i] = mrfd; |
| 1376 |
memory_region_update_pending |= mr->enabled; |
| 1377 |
memory_region_transaction_commit(); |
| 1378 |
} |
| 1379 |
|
| 1380 |
void memory_region_del_eventfd(MemoryRegion *mr,
|
| 1381 |
hwaddr addr, |
| 1382 |
unsigned size,
|
| 1383 |
bool match_data,
|
| 1384 |
uint64_t data, |
| 1385 |
EventNotifier *e) |
| 1386 |
{
|
| 1387 |
MemoryRegionIoeventfd mrfd = {
|
| 1388 |
.addr.start = int128_make64(addr), |
| 1389 |
.addr.size = int128_make64(size), |
| 1390 |
.match_data = match_data, |
| 1391 |
.data = data, |
| 1392 |
.e = e, |
| 1393 |
}; |
| 1394 |
unsigned i;
|
| 1395 |
|
| 1396 |
adjust_endianness(mr, &mrfd.data, size); |
| 1397 |
memory_region_transaction_begin(); |
| 1398 |
for (i = 0; i < mr->ioeventfd_nb; ++i) { |
| 1399 |
if (memory_region_ioeventfd_equal(mrfd, mr->ioeventfds[i])) {
|
| 1400 |
break;
|
| 1401 |
} |
| 1402 |
} |
| 1403 |
assert(i != mr->ioeventfd_nb); |
| 1404 |
memmove(&mr->ioeventfds[i], &mr->ioeventfds[i+1],
|
| 1405 |
sizeof(*mr->ioeventfds) * (mr->ioeventfd_nb - (i+1))); |
| 1406 |
--mr->ioeventfd_nb; |
| 1407 |
mr->ioeventfds = g_realloc(mr->ioeventfds, |
| 1408 |
sizeof(*mr->ioeventfds)*mr->ioeventfd_nb + 1); |
| 1409 |
memory_region_update_pending |= mr->enabled; |
| 1410 |
memory_region_transaction_commit(); |
| 1411 |
} |
| 1412 |
|
| 1413 |
static void memory_region_add_subregion_common(MemoryRegion *mr, |
| 1414 |
hwaddr offset, |
| 1415 |
MemoryRegion *subregion) |
| 1416 |
{
|
| 1417 |
MemoryRegion *other; |
| 1418 |
|
| 1419 |
memory_region_transaction_begin(); |
| 1420 |
|
| 1421 |
assert(!subregion->parent); |
| 1422 |
memory_region_ref(subregion); |
| 1423 |
subregion->parent = mr; |
| 1424 |
subregion->addr = offset; |
| 1425 |
QTAILQ_FOREACH(other, &mr->subregions, subregions_link) {
|
| 1426 |
if (subregion->may_overlap || other->may_overlap) {
|
| 1427 |
continue;
|
| 1428 |
} |
| 1429 |
if (int128_ge(int128_make64(offset),
|
| 1430 |
int128_add(int128_make64(other->addr), other->size)) |
| 1431 |
|| int128_le(int128_add(int128_make64(offset), subregion->size), |
| 1432 |
int128_make64(other->addr))) {
|
| 1433 |
continue;
|
| 1434 |
} |
| 1435 |
#if 0
|
| 1436 |
printf("warning: subregion collision %llx/%llx (%s) "
|
| 1437 |
"vs %llx/%llx (%s)\n",
|
| 1438 |
(unsigned long long)offset,
|
| 1439 |
(unsigned long long)int128_get64(subregion->size),
|
| 1440 |
subregion->name,
|
| 1441 |
(unsigned long long)other->addr,
|
| 1442 |
(unsigned long long)int128_get64(other->size),
|
| 1443 |
other->name);
|
| 1444 |
#endif
|
| 1445 |
} |
| 1446 |
QTAILQ_FOREACH(other, &mr->subregions, subregions_link) {
|
| 1447 |
if (subregion->priority >= other->priority) {
|
| 1448 |
QTAILQ_INSERT_BEFORE(other, subregion, subregions_link); |
| 1449 |
goto done;
|
| 1450 |
} |
| 1451 |
} |
| 1452 |
QTAILQ_INSERT_TAIL(&mr->subregions, subregion, subregions_link); |
| 1453 |
done:
|
| 1454 |
memory_region_update_pending |= mr->enabled && subregion->enabled; |
| 1455 |
memory_region_transaction_commit(); |
| 1456 |
} |
| 1457 |
|
| 1458 |
|
| 1459 |
void memory_region_add_subregion(MemoryRegion *mr,
|
| 1460 |
hwaddr offset, |
| 1461 |
MemoryRegion *subregion) |
| 1462 |
{
|
| 1463 |
subregion->may_overlap = false;
|
| 1464 |
subregion->priority = 0;
|
| 1465 |
memory_region_add_subregion_common(mr, offset, subregion); |
| 1466 |
} |
| 1467 |
|
| 1468 |
void memory_region_add_subregion_overlap(MemoryRegion *mr,
|
| 1469 |
hwaddr offset, |
| 1470 |
MemoryRegion *subregion, |
| 1471 |
int priority)
|
| 1472 |
{
|
| 1473 |
subregion->may_overlap = true;
|
| 1474 |
subregion->priority = priority; |
| 1475 |
memory_region_add_subregion_common(mr, offset, subregion); |
| 1476 |
} |
| 1477 |
|
| 1478 |
void memory_region_del_subregion(MemoryRegion *mr,
|
| 1479 |
MemoryRegion *subregion) |
| 1480 |
{
|
| 1481 |
memory_region_transaction_begin(); |
| 1482 |
assert(subregion->parent == mr); |
| 1483 |
subregion->parent = NULL;
|
| 1484 |
QTAILQ_REMOVE(&mr->subregions, subregion, subregions_link); |
| 1485 |
memory_region_unref(subregion); |
| 1486 |
memory_region_update_pending |= mr->enabled && subregion->enabled; |
| 1487 |
memory_region_transaction_commit(); |
| 1488 |
} |
| 1489 |
|
| 1490 |
void memory_region_set_enabled(MemoryRegion *mr, bool enabled) |
| 1491 |
{
|
| 1492 |
if (enabled == mr->enabled) {
|
| 1493 |
return;
|
| 1494 |
} |
| 1495 |
memory_region_transaction_begin(); |
| 1496 |
mr->enabled = enabled; |
| 1497 |
memory_region_update_pending = true;
|
| 1498 |
memory_region_transaction_commit(); |
| 1499 |
} |
| 1500 |
|
| 1501 |
void memory_region_set_address(MemoryRegion *mr, hwaddr addr)
|
| 1502 |
{
|
| 1503 |
MemoryRegion *parent = mr->parent; |
| 1504 |
int priority = mr->priority;
|
| 1505 |
bool may_overlap = mr->may_overlap;
|
| 1506 |
|
| 1507 |
if (addr == mr->addr || !parent) {
|
| 1508 |
mr->addr = addr; |
| 1509 |
return;
|
| 1510 |
} |
| 1511 |
|
| 1512 |
memory_region_transaction_begin(); |
| 1513 |
memory_region_ref(mr); |
| 1514 |
memory_region_del_subregion(parent, mr); |
| 1515 |
if (may_overlap) {
|
| 1516 |
memory_region_add_subregion_overlap(parent, addr, mr, priority); |
| 1517 |
} else {
|
| 1518 |
memory_region_add_subregion(parent, addr, mr); |
| 1519 |
} |
| 1520 |
memory_region_unref(mr); |
| 1521 |
memory_region_transaction_commit(); |
| 1522 |
} |
| 1523 |
|
| 1524 |
void memory_region_set_alias_offset(MemoryRegion *mr, hwaddr offset)
|
| 1525 |
{
|
| 1526 |
assert(mr->alias); |
| 1527 |
|
| 1528 |
if (offset == mr->alias_offset) {
|
| 1529 |
return;
|
| 1530 |
} |
| 1531 |
|
| 1532 |
memory_region_transaction_begin(); |
| 1533 |
mr->alias_offset = offset; |
| 1534 |
memory_region_update_pending |= mr->enabled; |
| 1535 |
memory_region_transaction_commit(); |
| 1536 |
} |
| 1537 |
|
| 1538 |
ram_addr_t memory_region_get_ram_addr(MemoryRegion *mr) |
| 1539 |
{
|
| 1540 |
return mr->ram_addr;
|
| 1541 |
} |
| 1542 |
|
| 1543 |
static int cmp_flatrange_addr(const void *addr_, const void *fr_) |
| 1544 |
{
|
| 1545 |
const AddrRange *addr = addr_;
|
| 1546 |
const FlatRange *fr = fr_;
|
| 1547 |
|
| 1548 |
if (int128_le(addrrange_end(*addr), fr->addr.start)) {
|
| 1549 |
return -1; |
| 1550 |
} else if (int128_ge(addr->start, addrrange_end(fr->addr))) { |
| 1551 |
return 1; |
| 1552 |
} |
| 1553 |
return 0; |
| 1554 |
} |
| 1555 |
|
| 1556 |
static FlatRange *flatview_lookup(FlatView *view, AddrRange addr)
|
| 1557 |
{
|
| 1558 |
return bsearch(&addr, view->ranges, view->nr,
|
| 1559 |
sizeof(FlatRange), cmp_flatrange_addr);
|
| 1560 |
} |
| 1561 |
|
| 1562 |
bool memory_region_present(MemoryRegion *parent, hwaddr addr)
|
| 1563 |
{
|
| 1564 |
MemoryRegion *mr = memory_region_find(parent, addr, 1).mr;
|
| 1565 |
if (!mr) {
|
| 1566 |
return false; |
| 1567 |
} |
| 1568 |
memory_region_unref(mr); |
| 1569 |
return true; |
| 1570 |
} |
| 1571 |
|
| 1572 |
MemoryRegionSection memory_region_find(MemoryRegion *mr, |
| 1573 |
hwaddr addr, uint64_t size) |
| 1574 |
{
|
| 1575 |
MemoryRegionSection ret = { .mr = NULL };
|
| 1576 |
MemoryRegion *root; |
| 1577 |
AddressSpace *as; |
| 1578 |
AddrRange range; |
| 1579 |
FlatView *view; |
| 1580 |
FlatRange *fr; |
| 1581 |
|
| 1582 |
addr += mr->addr; |
| 1583 |
for (root = mr; root->parent; ) {
|
| 1584 |
root = root->parent; |
| 1585 |
addr += root->addr; |
| 1586 |
} |
| 1587 |
|
| 1588 |
as = memory_region_to_address_space(root); |
| 1589 |
range = addrrange_make(int128_make64(addr), int128_make64(size)); |
| 1590 |
|
| 1591 |
view = address_space_get_flatview(as); |
| 1592 |
fr = flatview_lookup(view, range); |
| 1593 |
if (!fr) {
|
| 1594 |
flatview_unref(view); |
| 1595 |
return ret;
|
| 1596 |
} |
| 1597 |
|
| 1598 |
while (fr > view->ranges && addrrange_intersects(fr[-1].addr, range)) { |
| 1599 |
--fr; |
| 1600 |
} |
| 1601 |
|
| 1602 |
ret.mr = fr->mr; |
| 1603 |
ret.address_space = as; |
| 1604 |
range = addrrange_intersection(range, fr->addr); |
| 1605 |
ret.offset_within_region = fr->offset_in_region; |
| 1606 |
ret.offset_within_region += int128_get64(int128_sub(range.start, |
| 1607 |
fr->addr.start)); |
| 1608 |
ret.size = range.size; |
| 1609 |
ret.offset_within_address_space = int128_get64(range.start); |
| 1610 |
ret.readonly = fr->readonly; |
| 1611 |
memory_region_ref(ret.mr); |
| 1612 |
|
| 1613 |
flatview_unref(view); |
| 1614 |
return ret;
|
| 1615 |
} |
| 1616 |
|
| 1617 |
void address_space_sync_dirty_bitmap(AddressSpace *as)
|
| 1618 |
{
|
| 1619 |
FlatView *view; |
| 1620 |
FlatRange *fr; |
| 1621 |
|
| 1622 |
view = address_space_get_flatview(as); |
| 1623 |
FOR_EACH_FLAT_RANGE(fr, view) {
|
| 1624 |
MEMORY_LISTENER_UPDATE_REGION(fr, as, Forward, log_sync); |
| 1625 |
} |
| 1626 |
flatview_unref(view); |
| 1627 |
} |
| 1628 |
|
| 1629 |
void memory_global_dirty_log_start(void) |
| 1630 |
{
|
| 1631 |
global_dirty_log = true;
|
| 1632 |
MEMORY_LISTENER_CALL_GLOBAL(log_global_start, Forward); |
| 1633 |
} |
| 1634 |
|
| 1635 |
void memory_global_dirty_log_stop(void) |
| 1636 |
{
|
| 1637 |
global_dirty_log = false;
|
| 1638 |
MEMORY_LISTENER_CALL_GLOBAL(log_global_stop, Reverse); |
| 1639 |
} |
| 1640 |
|
| 1641 |
static void listener_add_address_space(MemoryListener *listener, |
| 1642 |
AddressSpace *as) |
| 1643 |
{
|
| 1644 |
FlatView *view; |
| 1645 |
FlatRange *fr; |
| 1646 |
|
| 1647 |
if (listener->address_space_filter
|
| 1648 |
&& listener->address_space_filter != as) {
|
| 1649 |
return;
|
| 1650 |
} |
| 1651 |
|
| 1652 |
if (global_dirty_log) {
|
| 1653 |
if (listener->log_global_start) {
|
| 1654 |
listener->log_global_start(listener); |
| 1655 |
} |
| 1656 |
} |
| 1657 |
|
| 1658 |
view = address_space_get_flatview(as); |
| 1659 |
FOR_EACH_FLAT_RANGE(fr, view) {
|
| 1660 |
MemoryRegionSection section = {
|
| 1661 |
.mr = fr->mr, |
| 1662 |
.address_space = as, |
| 1663 |
.offset_within_region = fr->offset_in_region, |
| 1664 |
.size = fr->addr.size, |
| 1665 |
.offset_within_address_space = int128_get64(fr->addr.start), |
| 1666 |
.readonly = fr->readonly, |
| 1667 |
}; |
| 1668 |
if (listener->region_add) {
|
| 1669 |
listener->region_add(listener, §ion); |
| 1670 |
} |
| 1671 |
} |
| 1672 |
flatview_unref(view); |
| 1673 |
} |
| 1674 |
|
| 1675 |
void memory_listener_register(MemoryListener *listener, AddressSpace *filter)
|
| 1676 |
{
|
| 1677 |
MemoryListener *other = NULL;
|
| 1678 |
AddressSpace *as; |
| 1679 |
|
| 1680 |
listener->address_space_filter = filter; |
| 1681 |
if (QTAILQ_EMPTY(&memory_listeners)
|
| 1682 |
|| listener->priority >= QTAILQ_LAST(&memory_listeners, |
| 1683 |
memory_listeners)->priority) {
|
| 1684 |
QTAILQ_INSERT_TAIL(&memory_listeners, listener, link); |
| 1685 |
} else {
|
| 1686 |
QTAILQ_FOREACH(other, &memory_listeners, link) {
|
| 1687 |
if (listener->priority < other->priority) {
|
| 1688 |
break;
|
| 1689 |
} |
| 1690 |
} |
| 1691 |
QTAILQ_INSERT_BEFORE(other, listener, link); |
| 1692 |
} |
| 1693 |
|
| 1694 |
QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
|
| 1695 |
listener_add_address_space(listener, as); |
| 1696 |
} |
| 1697 |
} |
| 1698 |
|
| 1699 |
void memory_listener_unregister(MemoryListener *listener)
|
| 1700 |
{
|
| 1701 |
QTAILQ_REMOVE(&memory_listeners, listener, link); |
| 1702 |
} |
| 1703 |
|
| 1704 |
void address_space_init(AddressSpace *as, MemoryRegion *root, const char *name) |
| 1705 |
{
|
| 1706 |
if (QTAILQ_EMPTY(&address_spaces)) {
|
| 1707 |
memory_init(); |
| 1708 |
} |
| 1709 |
|
| 1710 |
memory_region_transaction_begin(); |
| 1711 |
as->root = root; |
| 1712 |
as->current_map = g_new(FlatView, 1);
|
| 1713 |
flatview_init(as->current_map); |
| 1714 |
as->ioeventfd_nb = 0;
|
| 1715 |
as->ioeventfds = NULL;
|
| 1716 |
QTAILQ_INSERT_TAIL(&address_spaces, as, address_spaces_link); |
| 1717 |
as->name = g_strdup(name ? name : "anonymous");
|
| 1718 |
address_space_init_dispatch(as); |
| 1719 |
memory_region_update_pending |= root->enabled; |
| 1720 |
memory_region_transaction_commit(); |
| 1721 |
} |
| 1722 |
|
| 1723 |
void address_space_destroy(AddressSpace *as)
|
| 1724 |
{
|
| 1725 |
/* Flush out anything from MemoryListeners listening in on this */
|
| 1726 |
memory_region_transaction_begin(); |
| 1727 |
as->root = NULL;
|
| 1728 |
memory_region_transaction_commit(); |
| 1729 |
QTAILQ_REMOVE(&address_spaces, as, address_spaces_link); |
| 1730 |
address_space_destroy_dispatch(as); |
| 1731 |
flatview_unref(as->current_map); |
| 1732 |
g_free(as->name); |
| 1733 |
g_free(as->ioeventfds); |
| 1734 |
} |
| 1735 |
|
| 1736 |
bool io_mem_read(MemoryRegion *mr, hwaddr addr, uint64_t *pval, unsigned size) |
| 1737 |
{
|
| 1738 |
return memory_region_dispatch_read(mr, addr, pval, size);
|
| 1739 |
} |
| 1740 |
|
| 1741 |
bool io_mem_write(MemoryRegion *mr, hwaddr addr,
|
| 1742 |
uint64_t val, unsigned size)
|
| 1743 |
{
|
| 1744 |
return memory_region_dispatch_write(mr, addr, val, size);
|
| 1745 |
} |
| 1746 |
|
| 1747 |
typedef struct MemoryRegionList MemoryRegionList; |
| 1748 |
|
| 1749 |
struct MemoryRegionList {
|
| 1750 |
const MemoryRegion *mr;
|
| 1751 |
bool printed;
|
| 1752 |
QTAILQ_ENTRY(MemoryRegionList) queue; |
| 1753 |
}; |
| 1754 |
|
| 1755 |
typedef QTAILQ_HEAD(queue, MemoryRegionList) MemoryRegionListHead;
|
| 1756 |
|
| 1757 |
static void mtree_print_mr(fprintf_function mon_printf, void *f, |
| 1758 |
const MemoryRegion *mr, unsigned int level, |
| 1759 |
hwaddr base, |
| 1760 |
MemoryRegionListHead *alias_print_queue) |
| 1761 |
{
|
| 1762 |
MemoryRegionList *new_ml, *ml, *next_ml; |
| 1763 |
MemoryRegionListHead submr_print_queue; |
| 1764 |
const MemoryRegion *submr;
|
| 1765 |
unsigned int i; |
| 1766 |
|
| 1767 |
if (!mr || !mr->enabled) {
|
| 1768 |
return;
|
| 1769 |
} |
| 1770 |
|
| 1771 |
for (i = 0; i < level; i++) { |
| 1772 |
mon_printf(f, " ");
|
| 1773 |
} |
| 1774 |
|
| 1775 |
if (mr->alias) {
|
| 1776 |
MemoryRegionList *ml; |
| 1777 |
bool found = false; |
| 1778 |
|
| 1779 |
/* check if the alias is already in the queue */
|
| 1780 |
QTAILQ_FOREACH(ml, alias_print_queue, queue) {
|
| 1781 |
if (ml->mr == mr->alias && !ml->printed) {
|
| 1782 |
found = true;
|
| 1783 |
} |
| 1784 |
} |
| 1785 |
|
| 1786 |
if (!found) {
|
| 1787 |
ml = g_new(MemoryRegionList, 1);
|
| 1788 |
ml->mr = mr->alias; |
| 1789 |
ml->printed = false;
|
| 1790 |
QTAILQ_INSERT_TAIL(alias_print_queue, ml, queue); |
| 1791 |
} |
| 1792 |
mon_printf(f, TARGET_FMT_plx "-" TARGET_FMT_plx
|
| 1793 |
" (prio %d, %c%c): alias %s @%s " TARGET_FMT_plx
|
| 1794 |
"-" TARGET_FMT_plx "\n", |
| 1795 |
base + mr->addr, |
| 1796 |
base + mr->addr |
| 1797 |
+ (int128_nz(mr->size) ? |
| 1798 |
(hwaddr)int128_get64(int128_sub(mr->size, |
| 1799 |
int128_one())) : 0),
|
| 1800 |
mr->priority, |
| 1801 |
mr->romd_mode ? 'R' : '-', |
| 1802 |
!mr->readonly && !(mr->rom_device && mr->romd_mode) ? 'W'
|
| 1803 |
: '-',
|
| 1804 |
mr->name, |
| 1805 |
mr->alias->name, |
| 1806 |
mr->alias_offset, |
| 1807 |
mr->alias_offset |
| 1808 |
+ (int128_nz(mr->size) ? |
| 1809 |
(hwaddr)int128_get64(int128_sub(mr->size, |
| 1810 |
int128_one())) : 0));
|
| 1811 |
} else {
|
| 1812 |
mon_printf(f, |
| 1813 |
TARGET_FMT_plx "-" TARGET_FMT_plx " (prio %d, %c%c): %s\n", |
| 1814 |
base + mr->addr, |
| 1815 |
base + mr->addr |
| 1816 |
+ (int128_nz(mr->size) ? |
| 1817 |
(hwaddr)int128_get64(int128_sub(mr->size, |
| 1818 |
int128_one())) : 0),
|
| 1819 |
mr->priority, |
| 1820 |
mr->romd_mode ? 'R' : '-', |
| 1821 |
!mr->readonly && !(mr->rom_device && mr->romd_mode) ? 'W'
|
| 1822 |
: '-',
|
| 1823 |
mr->name); |
| 1824 |
} |
| 1825 |
|
| 1826 |
QTAILQ_INIT(&submr_print_queue); |
| 1827 |
|
| 1828 |
QTAILQ_FOREACH(submr, &mr->subregions, subregions_link) {
|
| 1829 |
new_ml = g_new(MemoryRegionList, 1);
|
| 1830 |
new_ml->mr = submr; |
| 1831 |
QTAILQ_FOREACH(ml, &submr_print_queue, queue) {
|
| 1832 |
if (new_ml->mr->addr < ml->mr->addr ||
|
| 1833 |
(new_ml->mr->addr == ml->mr->addr && |
| 1834 |
new_ml->mr->priority > ml->mr->priority)) {
|
| 1835 |
QTAILQ_INSERT_BEFORE(ml, new_ml, queue); |
| 1836 |
new_ml = NULL;
|
| 1837 |
break;
|
| 1838 |
} |
| 1839 |
} |
| 1840 |
if (new_ml) {
|
| 1841 |
QTAILQ_INSERT_TAIL(&submr_print_queue, new_ml, queue); |
| 1842 |
} |
| 1843 |
} |
| 1844 |
|
| 1845 |
QTAILQ_FOREACH(ml, &submr_print_queue, queue) {
|
| 1846 |
mtree_print_mr(mon_printf, f, ml->mr, level + 1, base + mr->addr,
|
| 1847 |
alias_print_queue); |
| 1848 |
} |
| 1849 |
|
| 1850 |
QTAILQ_FOREACH_SAFE(ml, &submr_print_queue, queue, next_ml) {
|
| 1851 |
g_free(ml); |
| 1852 |
} |
| 1853 |
} |
| 1854 |
|
| 1855 |
void mtree_info(fprintf_function mon_printf, void *f) |
| 1856 |
{
|
| 1857 |
MemoryRegionListHead ml_head; |
| 1858 |
MemoryRegionList *ml, *ml2; |
| 1859 |
AddressSpace *as; |
| 1860 |
|
| 1861 |
QTAILQ_INIT(&ml_head); |
| 1862 |
|
| 1863 |
QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
|
| 1864 |
mon_printf(f, "%s\n", as->name);
|
| 1865 |
mtree_print_mr(mon_printf, f, as->root, 0, 0, &ml_head); |
| 1866 |
} |
| 1867 |
|
| 1868 |
mon_printf(f, "aliases\n");
|
| 1869 |
/* print aliased regions */
|
| 1870 |
QTAILQ_FOREACH(ml, &ml_head, queue) {
|
| 1871 |
if (!ml->printed) {
|
| 1872 |
mon_printf(f, "%s\n", ml->mr->name);
|
| 1873 |
mtree_print_mr(mon_printf, f, ml->mr, 0, 0, &ml_head); |
| 1874 |
} |
| 1875 |
} |
| 1876 |
|
| 1877 |
QTAILQ_FOREACH_SAFE(ml, &ml_head, queue, ml2) {
|
| 1878 |
g_free(ml); |
| 1879 |
} |
| 1880 |
} |