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memory: maintain a list of address spaces 

Instead of embedding knowledge of the memory and I/O address spaces in the
memory core, maintain a list of all address spaces.  This list will later
be extended dynamically for other bus masters.

Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Avi Kivity 2012-10-02 15:28:50 +02:00
parent 9ad2bbc167
commit 0d673e36a7
2 changed files with 48 additions and 29 deletions
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75
memory.c
View File

@ -28,6 +28,9 @@ static bool global_dirty_log = false;
static QTAILQ_HEAD(memory_listeners, MemoryListener) memory_listeners
= QTAILQ_HEAD_INITIALIZER(memory_listeners);
static QTAILQ_HEAD(, AddressSpace) address_spaces
= QTAILQ_HEAD_INITIALIZER(address_spaces);
typedef struct AddrRange AddrRange;
/*
@ -449,14 +452,15 @@ static AddressSpace address_space_io;
static AddressSpace *memory_region_to_address_space(MemoryRegion *mr)
{
AddressSpace *as;
while (mr->parent) {
mr = mr->parent;
}
if (mr == address_space_memory.root) {
return &address_space_memory;
}
if (mr == address_space_io.root) {
return &address_space_io;
QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
if (mr == as->root) {
return as;
}
}
abort();
}
@ -729,16 +733,15 @@ void memory_region_transaction_begin(void)
void memory_region_transaction_commit(void)
{
AddressSpace *as;
assert(memory_region_transaction_depth);
--memory_region_transaction_depth;
if (!memory_region_transaction_depth) {
MEMORY_LISTENER_CALL_GLOBAL(begin, Forward);
if (address_space_memory.root) {
address_space_update_topology(&address_space_memory);
}
if (address_space_io.root) {
address_space_update_topology(&address_space_io);
QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
address_space_update_topology(as);
}
MEMORY_LISTENER_CALL_GLOBAL(commit, Forward);
@ -1072,12 +1075,14 @@ void memory_region_set_dirty(MemoryRegion *mr, target_phys_addr_t addr,
void memory_region_sync_dirty_bitmap(MemoryRegion *mr)
{
AddressSpace *as;
FlatRange *fr;
FOR_EACH_FLAT_RANGE(fr, address_space_memory.current_map) {
if (fr->mr == mr) {
MEMORY_LISTENER_UPDATE_REGION(fr, &address_space_memory,
Forward, log_sync);
QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
FOR_EACH_FLAT_RANGE(fr, as->current_map) {
if (fr->mr == mr) {
MEMORY_LISTENER_UPDATE_REGION(fr, as, Forward, log_sync);
}
}
}
}
@ -1120,13 +1125,13 @@ void *memory_region_get_ram_ptr(MemoryRegion *mr)
return qemu_get_ram_ptr(mr->ram_addr & TARGET_PAGE_MASK);
}
static void memory_region_update_coalesced_range(MemoryRegion *mr)
static void memory_region_update_coalesced_range_as(MemoryRegion *mr, AddressSpace *as)
{
FlatRange *fr;
CoalescedMemoryRange *cmr;
AddrRange tmp;
FOR_EACH_FLAT_RANGE(fr, address_space_memory.current_map) {
FOR_EACH_FLAT_RANGE(fr, as->current_map) {
if (fr->mr == mr) {
qemu_unregister_coalesced_mmio(int128_get64(fr->addr.start),
int128_get64(fr->addr.size));
@ -1145,6 +1150,15 @@ static void memory_region_update_coalesced_range(MemoryRegion *mr)
}
}
static void memory_region_update_coalesced_range(MemoryRegion *mr)
{
AddressSpace *as;
QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
memory_region_update_coalesced_range_as(mr, as);
}
}
void memory_region_set_coalescing(MemoryRegion *mr)
{
memory_region_clear_coalescing(mr);
@ -1450,10 +1464,6 @@ static void listener_add_address_space(MemoryListener *listener,
{
FlatRange *fr;
if (!as->root) {
return;
}
if (listener->address_space_filter
&& listener->address_space_filter != as->root) {
return;
@ -1478,6 +1488,7 @@ static void listener_add_address_space(MemoryListener *listener,
void memory_listener_register(MemoryListener *listener, MemoryRegion *filter)
{
MemoryListener *other = NULL;
AddressSpace *as;
listener->address_space_filter = filter;
if (QTAILQ_EMPTY(&memory_listeners)
@ -1492,8 +1503,10 @@ void memory_listener_register(MemoryListener *listener, MemoryRegion *filter)
}
QTAILQ_INSERT_BEFORE(other, listener, link);
}
listener_add_address_space(listener, &address_space_memory);
listener_add_address_space(listener, &address_space_io);
QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
listener_add_address_space(listener, as);
}
}
void memory_listener_unregister(MemoryListener *listener)
@ -1507,17 +1520,21 @@ void address_space_init(AddressSpace *as, MemoryRegion *root)
as->root = root;
as->current_map = g_new(FlatView, 1);
flatview_init(as->current_map);
QTAILQ_INSERT_TAIL(&address_spaces, as, address_spaces_link);
as->name = NULL;
memory_region_transaction_commit();
}
void set_system_memory_map(MemoryRegion *mr)
{
address_space_init(&address_space_memory, mr);
address_space_memory.name = "memory";
}
void set_system_io_map(MemoryRegion *mr)
{
address_space_init(&address_space_io, mr);
address_space_io.name = "I/O";
}
uint64_t io_mem_read(MemoryRegion *mr, target_phys_addr_t addr, unsigned size)
@ -1637,16 +1654,16 @@ void mtree_info(fprintf_function mon_printf, void *f)
{
MemoryRegionListHead ml_head;
MemoryRegionList *ml, *ml2;
AddressSpace *as;
QTAILQ_INIT(&ml_head);
mon_printf(f, "memory\n");
mtree_print_mr(mon_printf, f, address_space_memory.root, 0, 0, &ml_head);
if (address_space_io.root &&
!QTAILQ_EMPTY(&address_space_io.root->subregions)) {
mon_printf(f, "I/O\n");
mtree_print_mr(mon_printf, f, address_space_io.root, 0, 0, &ml_head);
QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
if (!as->name) {
continue;
}
mon_printf(f, "%s\n", as->name);
mtree_print_mr(mon_printf, f, as->root, 0, 0, &ml_head);
}
mon_printf(f, "aliases\n");

2
memory.h
View File

@ -164,10 +164,12 @@ typedef struct AddressSpace AddressSpace;
*/
struct AddressSpace {
/* All fields are private. */
const char *name;
MemoryRegion *root;
struct FlatView *current_map;
int ioeventfd_nb;
struct MemoryRegionIoeventfd *ioeventfds;
QTAILQ_ENTRY(AddressSpace) address_spaces_link;
};
typedef struct MemoryRegionSection MemoryRegionSection;