* GNU GPL, version 2 or (at your option) any later version.
*/
-#include "memory.h"
-#include "exec-memory.h"
-#include "ioport.h"
-#include "bitops.h"
-#include "kvm.h"
+#include "exec/memory.h"
+#include "exec/address-spaces.h"
+#include "exec/ioport.h"
+#include "qemu/bitops.h"
+#include "qom/object.h"
+#include "trace.h"
#include <assert.h>
-#include "memory-internal.h"
+#include "exec/memory-internal.h"
+
+//#define DEBUG_UNASSIGNED
static unsigned memory_region_transaction_depth;
static bool memory_region_update_pending;
static bool global_dirty_log = false;
+/* flat_view_mutex is taken around reading as->current_map; the critical
+ * section is extremely short, so I'm using a single mutex for every AS.
+ * We could also RCU for the read-side.
+ *
+ * The BQL is taken around transaction commits, hence both locks are taken
+ * while writing to as->current_map (with the BQL taken outside).
+ */
+static QemuMutex flat_view_mutex;
+
static QTAILQ_HEAD(memory_listeners, MemoryListener) memory_listeners
= QTAILQ_HEAD_INITIALIZER(memory_listeners);
static QTAILQ_HEAD(, AddressSpace) address_spaces
= QTAILQ_HEAD_INITIALIZER(address_spaces);
+static void memory_init(void)
+{
+ qemu_mutex_init(&flat_view_mutex);
+}
+
typedef struct AddrRange AddrRange;
/*
} \
} while (0)
+/* No need to ref/unref .mr, the FlatRange keeps it alive. */
#define MEMORY_LISTENER_UPDATE_REGION(fr, as, dir, callback) \
MEMORY_LISTENER_CALL(callback, dir, (&(MemoryRegionSection) { \
.mr = (fr)->mr, \
.address_space = (as), \
.offset_within_region = (fr)->offset_in_region, \
- .size = int128_get64((fr)->addr.size), \
+ .size = (fr)->addr.size, \
.offset_within_address_space = int128_get64((fr)->addr.start), \
.readonly = (fr)->readonly, \
}))
hwaddr offset_in_region;
AddrRange addr;
uint8_t dirty_log_mask;
- bool readable;
+ bool romd_mode;
bool readonly;
};
* order.
*/
struct FlatView {
+ unsigned ref;
FlatRange *ranges;
unsigned nr;
unsigned nr_allocated;
return a->mr == b->mr
&& addrrange_equal(a->addr, b->addr)
&& a->offset_in_region == b->offset_in_region
- && a->readable == b->readable
+ && a->romd_mode == b->romd_mode
&& a->readonly == b->readonly;
}
static void flatview_init(FlatView *view)
{
+ view->ref = 1;
view->ranges = NULL;
view->nr = 0;
view->nr_allocated = 0;
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;
+
+ for (i = 0; i < view->nr; i++) {
+ memory_region_unref(view->ranges[i].mr);
+ }
g_free(view->ranges);
+ g_free(view);
+}
+
+static void flatview_ref(FlatView *view)
+{
+ atomic_inc(&view->ref);
+}
+
+static void flatview_unref(FlatView *view)
+{
+ if (atomic_fetch_dec(&view->ref) == 1) {
+ flatview_destroy(view);
+ }
}
static bool can_merge(FlatRange *r1, FlatRange *r2)
r1->addr.size),
int128_make64(r2->offset_in_region))
&& r1->dirty_log_mask == r2->dirty_log_mask
- && r1->readable == r2->readable
+ && r1->romd_mode == r2->romd_mode
&& r1->readonly == r2->readonly;
}
-/* Attempt to simplify a view by merging ajacent ranges */
+/* Attempt to simplify a view by merging adjacent ranges */
static void flatview_simplify(FlatView *view)
{
unsigned i, j;
}
}
-static void memory_region_read_accessor(void *opaque,
+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 bool memory_region_wrong_endianness(MemoryRegion *mr)
+{
+#ifdef TARGET_WORDS_BIGENDIAN
+ return mr->ops->endianness == DEVICE_LITTLE_ENDIAN;
+#else
+ return mr->ops->endianness == DEVICE_BIG_ENDIAN;
+#endif
+}
+
+static void adjust_endianness(MemoryRegion *mr, uint64_t *data, unsigned size)
+{
+ if (memory_region_wrong_endianness(mr)) {
+ switch (size) {
+ case 1:
+ break;
+ case 2:
+ *data = bswap16(*data);
+ break;
+ case 4:
+ *data = bswap32(*data);
+ break;
+ case 8:
+ *data = bswap64(*data);
+ break;
+ default:
+ abort();
+ }
+ }
+}
+
+static void memory_region_oldmmio_read_accessor(MemoryRegion *mr,
+ hwaddr addr,
+ uint64_t *value,
+ unsigned size,
+ unsigned shift,
+ uint64_t mask)
+{
+ uint64_t tmp;
+
+ tmp = mr->ops->old_mmio.read[ctz32(size)](mr->opaque, addr);
+ trace_memory_region_ops_read(mr, addr, tmp, size);
+ *value |= (tmp & mask) << shift;
+}
+
+static void memory_region_read_accessor(MemoryRegion *mr,
hwaddr addr,
uint64_t *value,
unsigned size,
unsigned shift,
uint64_t mask)
{
- MemoryRegion *mr = opaque;
uint64_t tmp;
if (mr->flush_coalesced_mmio) {
qemu_flush_coalesced_mmio_buffer();
}
tmp = mr->ops->read(mr->opaque, addr, size);
+ trace_memory_region_ops_read(mr, addr, tmp, size);
*value |= (tmp & mask) << shift;
}
-static void memory_region_write_accessor(void *opaque,
+static void memory_region_oldmmio_write_accessor(MemoryRegion *mr,
+ hwaddr addr,
+ uint64_t *value,
+ unsigned size,
+ unsigned shift,
+ uint64_t mask)
+{
+ uint64_t tmp;
+
+ tmp = (*value >> shift) & mask;
+ trace_memory_region_ops_write(mr, addr, tmp, size);
+ mr->ops->old_mmio.write[ctz32(size)](mr->opaque, addr, tmp);
+}
+
+static void memory_region_write_accessor(MemoryRegion *mr,
hwaddr addr,
uint64_t *value,
unsigned size,
unsigned shift,
uint64_t mask)
{
- MemoryRegion *mr = opaque;
uint64_t tmp;
if (mr->flush_coalesced_mmio) {
qemu_flush_coalesced_mmio_buffer();
}
tmp = (*value >> shift) & mask;
+ trace_memory_region_ops_write(mr, addr, tmp, size);
mr->ops->write(mr->opaque, addr, tmp, size);
}
unsigned size,
unsigned access_size_min,
unsigned access_size_max,
- void (*access)(void *opaque,
+ void (*access)(MemoryRegion *mr,
hwaddr addr,
uint64_t *value,
unsigned size,
unsigned shift,
uint64_t mask),
- void *opaque)
+ MemoryRegion *mr)
{
uint64_t access_mask;
unsigned access_size;
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 = -1ULL >> (64 - access_size * 8);
- for (i = 0; i < size; i += access_size) {
- /* FIXME: big-endian support */
- access(opaque, addr + i, value, access_size, i * 8, access_mask);
- }
-}
-
-static const MemoryRegionPortio *find_portio(MemoryRegion *mr, uint64_t offset,
- unsigned width, bool write)
-{
- const MemoryRegionPortio *mrp;
-
- for (mrp = mr->ops->old_portio; mrp->size; ++mrp) {
- if (offset >= mrp->offset && offset < mrp->offset + mrp->len
- && width == mrp->size
- && (write ? (bool)mrp->write : (bool)mrp->read)) {
- return mrp;
+ if (memory_region_big_endian(mr)) {
+ for (i = 0; i < size; i += access_size) {
+ access(mr, addr + i, value, access_size,
+ (size - access_size - i) * 8, access_mask);
}
- }
- return NULL;
-}
-
-static void memory_region_iorange_read(IORange *iorange,
- uint64_t offset,
- unsigned width,
- uint64_t *data)
-{
- MemoryRegionIORange *mrio
- = container_of(iorange, MemoryRegionIORange, iorange);
- MemoryRegion *mr = mrio->mr;
-
- offset += mrio->offset;
- if (mr->ops->old_portio) {
- const MemoryRegionPortio *mrp = find_portio(mr, offset - mrio->offset,
- width, false);
-
- *data = ((uint64_t)1 << (width * 8)) - 1;
- if (mrp) {
- *data = mrp->read(mr->opaque, offset);
- } else if (width == 2) {
- mrp = find_portio(mr, offset - mrio->offset, 1, false);
- assert(mrp);
- *data = mrp->read(mr->opaque, offset) |
- (mrp->read(mr->opaque, offset + 1) << 8);
- }
- return;
- }
- *data = 0;
- access_with_adjusted_size(offset, data, width,
- mr->ops->impl.min_access_size,
- mr->ops->impl.max_access_size,
- memory_region_read_accessor, mr);
-}
-
-static void memory_region_iorange_write(IORange *iorange,
- uint64_t offset,
- unsigned width,
- uint64_t data)
-{
- MemoryRegionIORange *mrio
- = container_of(iorange, MemoryRegionIORange, iorange);
- MemoryRegion *mr = mrio->mr;
-
- offset += mrio->offset;
- if (mr->ops->old_portio) {
- const MemoryRegionPortio *mrp = find_portio(mr, offset - mrio->offset,
- width, true);
-
- if (mrp) {
- mrp->write(mr->opaque, offset, data);
- } else if (width == 2) {
- mrp = find_portio(mr, offset - mrio->offset, 1, true);
- assert(mrp);
- mrp->write(mr->opaque, offset, data & 0xff);
- mrp->write(mr->opaque, offset + 1, data >> 8);
+ } else {
+ for (i = 0; i < size; i += access_size) {
+ access(mr, addr + i, value, access_size, i * 8, access_mask);
}
- return;
}
- access_with_adjusted_size(offset, &data, width,
- mr->ops->impl.min_access_size,
- mr->ops->impl.max_access_size,
- memory_region_write_accessor, mr);
-}
-
-static void memory_region_iorange_destructor(IORange *iorange)
-{
- g_free(container_of(iorange, MemoryRegionIORange, iorange));
}
-const IORangeOps memory_region_iorange_ops = {
- .read = memory_region_iorange_read,
- .write = memory_region_iorange_write,
- .destructor = memory_region_iorange_destructor,
-};
-
static AddressSpace *memory_region_to_address_space(MemoryRegion *mr)
{
AddressSpace *as;
base = clip.start;
remain = clip.size;
+ fr.mr = mr;
+ fr.dirty_log_mask = mr->dirty_log_mask;
+ fr.romd_mode = mr->romd_mode;
+ fr.readonly = readonly;
+
/* 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))) {
if (int128_lt(base, view->ranges[i].addr.start)) {
now = int128_min(remain,
int128_sub(view->ranges[i].addr.start, base));
- fr.mr = mr;
fr.offset_in_region = offset_in_region;
fr.addr = addrrange_make(base, now);
- fr.dirty_log_mask = mr->dirty_log_mask;
- fr.readable = mr->readable;
- fr.readonly = readonly;
flatview_insert(view, i, &fr);
++i;
int128_addto(&base, now);
int128_subfrom(&remain, now);
}
if (int128_nz(remain)) {
- fr.mr = mr;
fr.offset_in_region = offset_in_region;
fr.addr = addrrange_make(base, remain);
- fr.dirty_log_mask = mr->dirty_log_mask;
- fr.readable = mr->readable;
- fr.readonly = readonly;
flatview_insert(view, i, &fr);
}
}
/* Render a memory topology into a list of disjoint absolute ranges. */
-static FlatView generate_memory_topology(MemoryRegion *mr)
+static FlatView *generate_memory_topology(MemoryRegion *mr)
{
- FlatView view;
+ FlatView *view;
- flatview_init(&view);
+ view = g_new(FlatView, 1);
+ flatview_init(view);
if (mr) {
- render_memory_region(&view, mr, int128_zero(),
+ render_memory_region(view, mr, int128_zero(),
addrrange_make(int128_zero(), int128_2_64()), false);
}
- flatview_simplify(&view);
+ flatview_simplify(view);
return view;
}
section = (MemoryRegionSection) {
.address_space = as,
.offset_within_address_space = int128_get64(fd->addr.start),
- .size = int128_get64(fd->addr.size),
+ .size = fd->addr.size,
};
MEMORY_LISTENER_CALL(eventfd_del, Forward, §ion,
fd->match_data, fd->data, fd->e);
section = (MemoryRegionSection) {
.address_space = as,
.offset_within_address_space = int128_get64(fd->addr.start),
- .size = int128_get64(fd->addr.size),
+ .size = fd->addr.size,
};
MEMORY_LISTENER_CALL(eventfd_add, Reverse, §ion,
fd->match_data, fd->data, fd->e);
}
}
+static FlatView *address_space_get_flatview(AddressSpace *as)
+{
+ FlatView *view;
+
+ qemu_mutex_lock(&flat_view_mutex);
+ view = as->current_map;
+ flatview_ref(view);
+ qemu_mutex_unlock(&flat_view_mutex);
+ 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;
- FOR_EACH_FLAT_RANGE(fr, as->current_map) {
+ 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,
g_free(as->ioeventfds);
as->ioeventfds = ioeventfds;
as->ioeventfd_nb = ioeventfd_nb;
+ flatview_unref(view);
}
static void address_space_update_topology_pass(AddressSpace *as,
- FlatView old_view,
- FlatView new_view,
+ const FlatView *old_view,
+ const FlatView *new_view,
bool adding)
{
unsigned iold, inew;
* 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];
+ 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];
+ if (inew < new_view->nr) {
+ frnew = &new_view->ranges[inew];
} else {
frnew = NULL;
}
|| int128_lt(frold->addr.start, frnew->addr.start)
|| (int128_eq(frold->addr.start, frnew->addr.start)
&& !flatrange_equal(frold, frnew)))) {
- /* In old, but (not in new, or in new but attributes changed). */
+ /* In old but not in new, or in both but attributes changed. */
if (!adding) {
MEMORY_LISTENER_UPDATE_REGION(frold, as, Reverse, region_del);
++iold;
} else if (frold && frnew && flatrange_equal(frold, frnew)) {
- /* In both (logging may have changed) */
+ /* In both and unchanged (except logging may have changed) */
if (adding) {
MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, region_nop);
static void address_space_update_topology(AddressSpace *as)
{
- FlatView old_view = *as->current_map;
- FlatView new_view = generate_memory_topology(as->root);
+ FlatView *old_view = address_space_get_flatview(as);
+ FlatView *new_view = generate_memory_topology(as->root);
address_space_update_topology_pass(as, old_view, new_view, false);
address_space_update_topology_pass(as, old_view, new_view, true);
- *as->current_map = new_view;
- flatview_destroy(&old_view);
+ qemu_mutex_lock(&flat_view_mutex);
+ flatview_unref(as->current_map);
+ as->current_map = new_view;
+ qemu_mutex_unlock(&flat_view_mutex);
+
+ /* 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.
+ */
+ flatview_unref(old_view);
+
address_space_update_ioeventfds(as);
}
qemu_ram_free(mr->ram_addr);
}
-static void memory_region_destructor_ram_from_ptr(MemoryRegion *mr)
+static void memory_region_destructor_alias(MemoryRegion *mr)
{
- qemu_ram_free_from_ptr(mr->ram_addr);
+ memory_region_unref(mr->alias);
}
-static void memory_region_destructor_iomem(MemoryRegion *mr)
+static void memory_region_destructor_ram_from_ptr(MemoryRegion *mr)
{
+ qemu_ram_free_from_ptr(mr->ram_addr);
}
static void memory_region_destructor_rom_device(MemoryRegion *mr)
qemu_ram_free(mr->ram_addr & TARGET_PAGE_MASK);
}
-static bool memory_region_wrong_endianness(MemoryRegion *mr)
-{
-#ifdef TARGET_WORDS_BIGENDIAN
- return mr->ops->endianness == DEVICE_LITTLE_ENDIAN;
-#else
- return mr->ops->endianness == DEVICE_BIG_ENDIAN;
-#endif
-}
-
void memory_region_init(MemoryRegion *mr,
+ Object *owner,
const char *name,
uint64_t size)
{
- mr->ops = NULL;
+ mr->ops = &unassigned_mem_ops;
+ mr->opaque = NULL;
+ mr->owner = owner;
+ mr->iommu_ops = NULL;
mr->parent = NULL;
mr->size = int128_make64(size);
if (size == UINT64_MAX) {
mr->enabled = true;
mr->terminates = false;
mr->ram = false;
- mr->readable = true;
+ mr->romd_mode = true;
mr->readonly = false;
mr->rom_device = false;
mr->destructor = memory_region_destructor_none;
mr->flush_coalesced_mmio = false;
}
-static bool memory_region_access_valid(MemoryRegion *mr,
- hwaddr addr,
- unsigned size,
- bool is_write)
+static uint64_t unassigned_mem_read(void *opaque, hwaddr addr,
+ unsigned size)
{
- if (mr->ops->valid.accepts
- && !mr->ops->valid.accepts(mr->opaque, addr, size, is_write)) {
- return false;
+#ifdef DEBUG_UNASSIGNED
+ printf("Unassigned mem read " TARGET_FMT_plx "\n", addr);
+#endif
+ if (current_cpu != NULL) {
+ cpu_unassigned_access(current_cpu, addr, false, false, 0, size);
}
+ return -1ULL;
+}
+
+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
+ if (current_cpu != NULL) {
+ cpu_unassigned_access(current_cpu, addr, true, false, 0, size);
+ }
+}
+
+static bool unassigned_mem_accepts(void *opaque, hwaddr addr,
+ unsigned size, bool is_write)
+{
+ return false;
+}
+
+const MemoryRegionOps unassigned_mem_ops = {
+ .valid.accepts = unassigned_mem_accepts,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+};
+
+bool memory_region_access_valid(MemoryRegion *mr,
+ hwaddr addr,
+ unsigned size,
+ bool is_write)
+{
+ int access_size_min, access_size_max;
+ int access_size, i;
if (!mr->ops->valid.unaligned && (addr & (size - 1))) {
return false;
}
- /* Treat zero as compatibility all valid */
- if (!mr->ops->valid.max_access_size) {
+ if (!mr->ops->valid.accepts) {
return true;
}
- if (size > mr->ops->valid.max_access_size
- || size < mr->ops->valid.min_access_size) {
- return false;
+ 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)) {
+ return false;
+ }
+ }
+
return true;
}
{
uint64_t data = 0;
- if (!memory_region_access_valid(mr, addr, size, false)) {
- return -1U; /* FIXME: better signalling */
- }
-
- if (!mr->ops->read) {
- return mr->ops->old_mmio.read[bitops_ffsl(size)](mr->opaque, addr);
+ if (mr->ops->read) {
+ access_with_adjusted_size(addr, &data, size,
+ mr->ops->impl.min_access_size,
+ mr->ops->impl.max_access_size,
+ memory_region_read_accessor, mr);
+ } else {
+ access_with_adjusted_size(addr, &data, size, 1, 4,
+ memory_region_oldmmio_read_accessor, mr);
}
- /* FIXME: support unaligned access */
- access_with_adjusted_size(addr, &data, size,
- mr->ops->impl.min_access_size,
- mr->ops->impl.max_access_size,
- memory_region_read_accessor, mr);
-
return data;
}
-static void adjust_endianness(MemoryRegion *mr, uint64_t *data, unsigned size)
+static bool memory_region_dispatch_read(MemoryRegion *mr,
+ hwaddr addr,
+ uint64_t *pval,
+ unsigned size)
{
- if (memory_region_wrong_endianness(mr)) {
- switch (size) {
- case 1:
- break;
- case 2:
- *data = bswap16(*data);
- break;
- case 4:
- *data = bswap32(*data);
- break;
- default:
- abort();
- }
+ if (!memory_region_access_valid(mr, addr, size, false)) {
+ *pval = unassigned_mem_read(mr, addr, size);
+ return true;
}
-}
-
-static uint64_t memory_region_dispatch_read(MemoryRegion *mr,
- hwaddr addr,
- unsigned size)
-{
- uint64_t ret;
- ret = memory_region_dispatch_read1(mr, addr, size);
- adjust_endianness(mr, &ret, size);
- return ret;
+ *pval = memory_region_dispatch_read1(mr, addr, size);
+ adjust_endianness(mr, pval, size);
+ return false;
}
-static void memory_region_dispatch_write(MemoryRegion *mr,
+static bool memory_region_dispatch_write(MemoryRegion *mr,
hwaddr addr,
uint64_t data,
unsigned size)
{
if (!memory_region_access_valid(mr, addr, size, true)) {
- return; /* FIXME: better signalling */
+ unassigned_mem_write(mr, addr, data, size);
+ return true;
}
adjust_endianness(mr, &data, size);
- if (!mr->ops->write) {
- mr->ops->old_mmio.write[bitops_ffsl(size)](mr->opaque, addr, data);
- return;
+ if (mr->ops->write) {
+ access_with_adjusted_size(addr, &data, size,
+ mr->ops->impl.min_access_size,
+ mr->ops->impl.max_access_size,
+ memory_region_write_accessor, mr);
+ } else {
+ access_with_adjusted_size(addr, &data, size, 1, 4,
+ memory_region_oldmmio_write_accessor, mr);
}
-
- /* FIXME: support unaligned access */
- access_with_adjusted_size(addr, &data, size,
- mr->ops->impl.min_access_size,
- mr->ops->impl.max_access_size,
- memory_region_write_accessor, mr);
+ return false;
}
void memory_region_init_io(MemoryRegion *mr,
+ Object *owner,
const MemoryRegionOps *ops,
void *opaque,
const char *name,
uint64_t size)
{
- memory_region_init(mr, name, size);
+ memory_region_init(mr, owner, name, size);
mr->ops = ops;
mr->opaque = opaque;
mr->terminates = true;
- mr->destructor = memory_region_destructor_iomem;
mr->ram_addr = ~(ram_addr_t)0;
}
void memory_region_init_ram(MemoryRegion *mr,
+ Object *owner,
const char *name,
uint64_t size)
{
- memory_region_init(mr, name, size);
+ memory_region_init(mr, owner, name, size);
mr->ram = true;
mr->terminates = true;
mr->destructor = memory_region_destructor_ram;
}
void memory_region_init_ram_ptr(MemoryRegion *mr,
+ Object *owner,
const char *name,
uint64_t size,
void *ptr)
{
- memory_region_init(mr, name, size);
+ memory_region_init(mr, owner, name, size);
mr->ram = true;
mr->terminates = true;
mr->destructor = memory_region_destructor_ram_from_ptr;
}
void memory_region_init_alias(MemoryRegion *mr,
+ Object *owner,
const char *name,
MemoryRegion *orig,
hwaddr offset,
uint64_t size)
{
- memory_region_init(mr, name, size);
+ memory_region_init(mr, owner, name, size);
+ memory_region_ref(orig);
+ mr->destructor = memory_region_destructor_alias;
mr->alias = orig;
mr->alias_offset = offset;
}
void memory_region_init_rom_device(MemoryRegion *mr,
+ Object *owner,
const MemoryRegionOps *ops,
void *opaque,
const char *name,
uint64_t size)
{
- memory_region_init(mr, name, size);
+ memory_region_init(mr, owner, name, size);
mr->ops = ops;
mr->opaque = opaque;
mr->terminates = true;
mr->ram_addr = qemu_ram_alloc(size, mr);
}
-static uint64_t invalid_read(void *opaque, hwaddr addr,
- unsigned size)
-{
- MemoryRegion *mr = opaque;
-
- if (!mr->warning_printed) {
- fprintf(stderr, "Invalid read from memory region %s\n", mr->name);
- mr->warning_printed = true;
- }
- return -1U;
-}
-
-static void invalid_write(void *opaque, hwaddr addr, uint64_t data,
- unsigned size)
+void memory_region_init_iommu(MemoryRegion *mr,
+ Object *owner,
+ const MemoryRegionIOMMUOps *ops,
+ const char *name,
+ uint64_t size)
{
- MemoryRegion *mr = opaque;
-
- if (!mr->warning_printed) {
- fprintf(stderr, "Invalid write to memory region %s\n", mr->name);
- mr->warning_printed = true;
- }
+ memory_region_init(mr, owner, name, size);
+ mr->iommu_ops = ops,
+ mr->terminates = true; /* then re-forwards */
+ notifier_list_init(&mr->iommu_notify);
}
-static const MemoryRegionOps reservation_ops = {
- .read = invalid_read,
- .write = invalid_write,
- .endianness = DEVICE_NATIVE_ENDIAN,
-};
-
void memory_region_init_reservation(MemoryRegion *mr,
+ Object *owner,
const char *name,
uint64_t size)
{
- memory_region_init_io(mr, &reservation_ops, mr, name, size);
+ memory_region_init_io(mr, owner, &unassigned_mem_ops, mr, name, size);
}
void memory_region_destroy(MemoryRegion *mr)
g_free(mr->ioeventfds);
}
+Object *memory_region_owner(MemoryRegion *mr)
+{
+ return mr->owner;
+}
+
+void memory_region_ref(MemoryRegion *mr)
+{
+ 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 mr->ram && mr->readonly;
}
+bool memory_region_is_iommu(MemoryRegion *mr)
+{
+ return mr->iommu_ops;
+}
+
+void memory_region_register_iommu_notifier(MemoryRegion *mr, Notifier *n)
+{
+ notifier_list_add(&mr->iommu_notify, n);
+}
+
+void memory_region_unregister_iommu_notifier(Notifier *n)
+{
+ notifier_remove(n);
+}
+
+void memory_region_notify_iommu(MemoryRegion *mr,
+ IOMMUTLBEntry entry)
+{
+ assert(memory_region_is_iommu(mr));
+ notifier_list_notify(&mr->iommu_notify, &entry);
+}
+
void memory_region_set_log(MemoryRegion *mr, bool log, unsigned client)
{
uint8_t mask = 1 << client;
return cpu_physical_memory_set_dirty_range(mr->ram_addr + addr, size, -1);
}
+bool memory_region_test_and_clear_dirty(MemoryRegion *mr, hwaddr addr,
+ hwaddr size, unsigned client)
+{
+ bool ret;
+ assert(mr->terminates);
+ ret = cpu_physical_memory_get_dirty(mr->ram_addr + addr, size,
+ 1 << client);
+ if (ret) {
+ cpu_physical_memory_reset_dirty(mr->ram_addr + addr,
+ mr->ram_addr + addr + size,
+ 1 << client);
+ }
+ return ret;
+}
+
+
void memory_region_sync_dirty_bitmap(MemoryRegion *mr)
{
AddressSpace *as;
FlatRange *fr;
QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
- FOR_EACH_FLAT_RANGE(fr, as->current_map) {
+ FlatView *view = address_space_get_flatview(as);
+ FOR_EACH_FLAT_RANGE(fr, view) {
if (fr->mr == mr) {
MEMORY_LISTENER_UPDATE_REGION(fr, as, Forward, log_sync);
}
}
+ flatview_unref(view);
}
}
}
}
-void memory_region_rom_device_set_readable(MemoryRegion *mr, bool readable)
+void memory_region_rom_device_set_romd(MemoryRegion *mr, bool romd_mode)
{
- if (mr->readable != readable) {
+ if (mr->romd_mode != romd_mode) {
memory_region_transaction_begin();
- mr->readable = readable;
+ mr->romd_mode = romd_mode;
memory_region_update_pending |= mr->enabled;
memory_region_transaction_commit();
}
static void memory_region_update_coalesced_range_as(MemoryRegion *mr, AddressSpace *as)
{
+ FlatView *view;
FlatRange *fr;
CoalescedMemoryRange *cmr;
AddrRange tmp;
MemoryRegionSection section;
- FOR_EACH_FLAT_RANGE(fr, as->current_map) {
+ view = address_space_get_flatview(as);
+ FOR_EACH_FLAT_RANGE(fr, view) {
if (fr->mr == mr) {
section = (MemoryRegionSection) {
.address_space = as,
.offset_within_address_space = int128_get64(fr->addr.start),
- .size = int128_get64(fr->addr.size),
+ .size = fr->addr.size,
};
MEMORY_LISTENER_CALL(coalesced_mmio_del, Reverse, §ion,
}
}
}
+ flatview_unref(view);
}
static void memory_region_update_coalesced_range(MemoryRegion *mr)
memory_region_transaction_begin();
assert(!subregion->parent);
+ memory_region_ref(subregion);
subregion->parent = mr;
subregion->addr = offset;
QTAILQ_FOREACH(other, &mr->subregions, subregions_link) {
if (subregion->may_overlap || other->may_overlap) {
continue;
}
- if (int128_gt(int128_make64(offset),
+ if (int128_ge(int128_make64(offset),
int128_add(int128_make64(other->addr), other->size))
|| int128_le(int128_add(int128_make64(offset), subregion->size),
int128_make64(other->addr))) {
assert(subregion->parent == mr);
subregion->parent = NULL;
QTAILQ_REMOVE(&mr->subregions, subregion, subregions_link);
+ memory_region_unref(subregion);
memory_region_update_pending |= mr->enabled && subregion->enabled;
memory_region_transaction_commit();
}
}
memory_region_transaction_begin();
+ memory_region_ref(mr);
memory_region_del_subregion(parent, mr);
if (may_overlap) {
memory_region_add_subregion_overlap(parent, addr, mr, priority);
} else {
memory_region_add_subregion(parent, addr, mr);
}
+ memory_region_unref(mr);
memory_region_transaction_commit();
}
return 0;
}
-static FlatRange *address_space_lookup(AddressSpace *as, AddrRange addr)
+static FlatRange *flatview_lookup(FlatView *view, AddrRange addr)
{
- return bsearch(&addr, as->current_map->ranges, as->current_map->nr,
+ return bsearch(&addr, view->ranges, view->nr,
sizeof(FlatRange), cmp_flatrange_addr);
}
-MemoryRegionSection memory_region_find(MemoryRegion *address_space,
+bool memory_region_present(MemoryRegion *parent, hwaddr addr)
+{
+ MemoryRegion *mr = memory_region_find(parent, addr, 1).mr;
+ if (!mr) {
+ return false;
+ }
+ memory_region_unref(mr);
+ return true;
+}
+
+MemoryRegionSection memory_region_find(MemoryRegion *mr,
hwaddr addr, uint64_t size)
{
- AddressSpace *as = memory_region_to_address_space(address_space);
- AddrRange range = addrrange_make(int128_make64(addr),
- int128_make64(size));
- FlatRange *fr = address_space_lookup(as, range);
- MemoryRegionSection ret = { .mr = NULL, .size = 0 };
+ MemoryRegionSection ret = { .mr = NULL };
+ MemoryRegion *root;
+ AddressSpace *as;
+ AddrRange range;
+ FlatView *view;
+ FlatRange *fr;
+ addr += mr->addr;
+ for (root = mr; root->parent; ) {
+ root = root->parent;
+ addr += root->addr;
+ }
+
+ as = memory_region_to_address_space(root);
+ range = addrrange_make(int128_make64(addr), int128_make64(size));
+
+ view = address_space_get_flatview(as);
+ fr = flatview_lookup(view, range);
if (!fr) {
return ret;
}
- while (fr > as->current_map->ranges
- && addrrange_intersects(fr[-1].addr, range)) {
+ while (fr > view->ranges && addrrange_intersects(fr[-1].addr, range)) {
--fr;
}
ret.mr = fr->mr;
+ ret.address_space = as;
range = addrrange_intersection(range, fr->addr);
ret.offset_within_region = fr->offset_in_region;
ret.offset_within_region += int128_get64(int128_sub(range.start,
fr->addr.start));
- ret.size = int128_get64(range.size);
+ ret.size = range.size;
ret.offset_within_address_space = int128_get64(range.start);
ret.readonly = fr->readonly;
+ memory_region_ref(ret.mr);
+
+ flatview_unref(view);
return ret;
}
-void memory_global_sync_dirty_bitmap(MemoryRegion *address_space)
+void address_space_sync_dirty_bitmap(AddressSpace *as)
{
- AddressSpace *as = memory_region_to_address_space(address_space);
+ FlatView *view;
FlatRange *fr;
- FOR_EACH_FLAT_RANGE(fr, as->current_map) {
+ view = address_space_get_flatview(as);
+ FOR_EACH_FLAT_RANGE(fr, view) {
MEMORY_LISTENER_UPDATE_REGION(fr, as, Forward, log_sync);
}
+ flatview_unref(view);
}
void memory_global_dirty_log_start(void)
static void listener_add_address_space(MemoryListener *listener,
AddressSpace *as)
{
+ FlatView *view;
FlatRange *fr;
if (listener->address_space_filter
}
}
- FOR_EACH_FLAT_RANGE(fr, as->current_map) {
+ view = address_space_get_flatview(as);
+ FOR_EACH_FLAT_RANGE(fr, view) {
MemoryRegionSection section = {
.mr = fr->mr,
.address_space = as,
.offset_within_region = fr->offset_in_region,
- .size = int128_get64(fr->addr.size),
+ .size = fr->addr.size,
.offset_within_address_space = int128_get64(fr->addr.start),
.readonly = fr->readonly,
};
listener->region_add(listener, §ion);
}
}
+ flatview_unref(view);
}
void memory_listener_register(MemoryListener *listener, AddressSpace *filter)
QTAILQ_REMOVE(&memory_listeners, listener, link);
}
-void address_space_init(AddressSpace *as, MemoryRegion *root)
+void address_space_init(AddressSpace *as, MemoryRegion *root, const char *name)
{
+ if (QTAILQ_EMPTY(&address_spaces)) {
+ memory_init();
+ }
+
memory_region_transaction_begin();
as->root = root;
as->current_map = g_new(FlatView, 1);
flatview_init(as->current_map);
+ as->ioeventfd_nb = 0;
+ as->ioeventfds = NULL;
QTAILQ_INSERT_TAIL(&address_spaces, as, address_spaces_link);
- as->name = NULL;
- memory_region_transaction_commit();
+ as->name = g_strdup(name ? name : "anonymous");
address_space_init_dispatch(as);
+ memory_region_update_pending |= root->enabled;
+ memory_region_transaction_commit();
}
void address_space_destroy(AddressSpace *as)
memory_region_transaction_commit();
QTAILQ_REMOVE(&address_spaces, as, address_spaces_link);
address_space_destroy_dispatch(as);
- flatview_destroy(as->current_map);
- g_free(as->current_map);
+ flatview_unref(as->current_map);
+ g_free(as->name);
+ g_free(as->ioeventfds);
}
-uint64_t io_mem_read(MemoryRegion *mr, hwaddr addr, unsigned size)
+bool io_mem_read(MemoryRegion *mr, hwaddr addr, uint64_t *pval, unsigned size)
{
- return memory_region_dispatch_read(mr, addr, size);
+ return memory_region_dispatch_read(mr, addr, pval, size);
}
-void io_mem_write(MemoryRegion *mr, hwaddr addr,
+bool io_mem_write(MemoryRegion *mr, hwaddr addr,
uint64_t val, unsigned size)
{
- memory_region_dispatch_write(mr, addr, val, size);
+ return memory_region_dispatch_write(mr, addr, val, size);
}
typedef struct MemoryRegionList MemoryRegionList;
"-" TARGET_FMT_plx "\n",
base + mr->addr,
base + mr->addr
- + (hwaddr)int128_get64(mr->size) - 1,
+ + (int128_nz(mr->size) ?
+ (hwaddr)int128_get64(int128_sub(mr->size,
+ int128_one())) : 0),
mr->priority,
- mr->readable ? 'R' : '-',
- !mr->readonly && !(mr->rom_device && mr->readable) ? 'W'
- : '-',
+ mr->romd_mode ? 'R' : '-',
+ !mr->readonly && !(mr->rom_device && mr->romd_mode) ? 'W'
+ : '-',
mr->name,
mr->alias->name,
mr->alias_offset,
TARGET_FMT_plx "-" TARGET_FMT_plx " (prio %d, %c%c): %s\n",
base + mr->addr,
base + mr->addr
- + (hwaddr)int128_get64(mr->size) - 1,
+ + (int128_nz(mr->size) ?
+ (hwaddr)int128_get64(int128_sub(mr->size,
+ int128_one())) : 0),
mr->priority,
- mr->readable ? 'R' : '-',
- !mr->readonly && !(mr->rom_device && mr->readable) ? 'W'
- : '-',
+ mr->romd_mode ? 'R' : '-',
+ !mr->readonly && !(mr->rom_device && mr->romd_mode) ? 'W'
+ : '-',
mr->name);
}
QTAILQ_INIT(&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);
}
projects / qemu.git / blobdiff