#include "memory.h"
#include "exec-memory.h"
+#include "ioport.h"
+#include "bitops.h"
+#include "kvm.h"
#include <assert.h>
+unsigned memory_region_transaction_depth = 0;
+
typedef struct AddrRange AddrRange;
+/*
+ * Note using signed integers limits us to physical addresses at most
+ * 63 bits wide. They are needed for negative offsetting in aliases
+ * (large MemoryRegion::alias_offset).
+ */
struct AddrRange {
- uint64_t start;
- uint64_t size;
+ Int128 start;
+ Int128 size;
};
-static AddrRange addrrange_make(uint64_t start, uint64_t size)
+static AddrRange addrrange_make(Int128 start, Int128 size)
{
return (AddrRange) { start, size };
}
static bool addrrange_equal(AddrRange r1, AddrRange r2)
{
- return r1.start == r2.start && r1.size == r2.size;
+ return int128_eq(r1.start, r2.start) && int128_eq(r1.size, r2.size);
}
-static uint64_t addrrange_end(AddrRange r)
+static Int128 addrrange_end(AddrRange r)
{
- return r.start + r.size;
+ return int128_add(r.start, r.size);
}
-static AddrRange addrrange_shift(AddrRange range, int64_t delta)
+static AddrRange addrrange_shift(AddrRange range, Int128 delta)
{
- range.start += delta;
+ int128_addto(&range.start, delta);
return range;
}
+static bool addrrange_contains(AddrRange range, Int128 addr)
+{
+ return int128_ge(addr, range.start)
+ && int128_lt(addr, addrrange_end(range));
+}
+
static bool addrrange_intersects(AddrRange r1, AddrRange r2)
{
- return (r1.start >= r2.start && r1.start < r2.start + r2.size)
- || (r2.start >= r1.start && r2.start < r1.start + r1.size);
+ return addrrange_contains(r1, r2.start)
+ || addrrange_contains(r2, r1.start);
}
static AddrRange addrrange_intersection(AddrRange r1, AddrRange r2)
{
- uint64_t start = MAX(r1.start, r2.start);
- /* off-by-one arithmetic to prevent overflow */
- uint64_t end = MIN(addrrange_end(r1) - 1, addrrange_end(r2) - 1);
- return addrrange_make(start, end - start + 1);
+ Int128 start = int128_max(r1.start, r2.start);
+ Int128 end = int128_min(addrrange_end(r1), addrrange_end(r2));
+ return addrrange_make(start, int128_sub(end, start));
}
struct CoalescedMemoryRange {
QTAILQ_ENTRY(CoalescedMemoryRange) link;
};
+struct MemoryRegionIoeventfd {
+ AddrRange addr;
+ bool match_data;
+ uint64_t data;
+ int fd;
+};
+
+static bool memory_region_ioeventfd_before(MemoryRegionIoeventfd a,
+ MemoryRegionIoeventfd b)
+{
+ if (int128_lt(a.addr.start, b.addr.start)) {
+ return true;
+ } else if (int128_gt(a.addr.start, b.addr.start)) {
+ return false;
+ } else if (int128_lt(a.addr.size, b.addr.size)) {
+ return true;
+ } else if (int128_gt(a.addr.size, b.addr.size)) {
+ return false;
+ } else if (a.match_data < b.match_data) {
+ return true;
+ } else if (a.match_data > b.match_data) {
+ return false;
+ } else if (a.match_data) {
+ if (a.data < b.data) {
+ return true;
+ } else if (a.data > b.data) {
+ return false;
+ }
+ }
+ if (a.fd < b.fd) {
+ return true;
+ } else if (a.fd > b.fd) {
+ return false;
+ }
+ return false;
+}
+
+static bool memory_region_ioeventfd_equal(MemoryRegionIoeventfd a,
+ MemoryRegionIoeventfd b)
+{
+ return !memory_region_ioeventfd_before(a, b)
+ && !memory_region_ioeventfd_before(b, a);
+}
+
typedef struct FlatRange FlatRange;
typedef struct FlatView FlatView;
target_phys_addr_t offset_in_region;
AddrRange addr;
uint8_t dirty_log_mask;
+ bool readable;
+ bool readonly;
};
/* Flattened global view of current active memory hierarchy. Kept in sorted
const AddressSpaceOps *ops;
MemoryRegion *root;
FlatView current_map;
+ int ioeventfd_nb;
+ MemoryRegionIoeventfd *ioeventfds;
};
struct AddressSpaceOps {
void (*range_del)(AddressSpace *as, FlatRange *fr);
void (*log_start)(AddressSpace *as, FlatRange *fr);
void (*log_stop)(AddressSpace *as, FlatRange *fr);
+ void (*ioeventfd_add)(AddressSpace *as, MemoryRegionIoeventfd *fd);
+ void (*ioeventfd_del)(AddressSpace *as, MemoryRegionIoeventfd *fd);
};
#define FOR_EACH_FLAT_RANGE(var, view) \
{
return a->mr == b->mr
&& addrrange_equal(a->addr, b->addr)
- && a->offset_in_region == b->offset_in_region;
+ && a->offset_in_region == b->offset_in_region
+ && a->readable == b->readable
+ && a->readonly == b->readonly;
}
static void flatview_init(FlatView *view)
{
if (view->nr == view->nr_allocated) {
view->nr_allocated = MAX(2 * view->nr, 10);
- view->ranges = qemu_realloc(view->ranges,
+ view->ranges = g_realloc(view->ranges,
view->nr_allocated * sizeof(*view->ranges));
}
memmove(view->ranges + pos + 1, view->ranges + pos,
static void flatview_destroy(FlatView *view)
{
- qemu_free(view->ranges);
+ g_free(view->ranges);
}
static bool can_merge(FlatRange *r1, FlatRange *r2)
{
- return addrrange_end(r1->addr) == r2->addr.start
+ return int128_eq(addrrange_end(r1->addr), r2->addr.start)
&& r1->mr == r2->mr
- && r1->offset_in_region + r1->addr.size == r2->offset_in_region
- && r1->dirty_log_mask == r2->dirty_log_mask;
+ && int128_eq(int128_add(int128_make64(r1->offset_in_region),
+ r1->addr.size),
+ int128_make64(r2->offset_in_region))
+ && r1->dirty_log_mask == r2->dirty_log_mask
+ && r1->readable == r2->readable
+ && r1->readonly == r2->readonly;
}
/* Attempt to simplify a view by merging ajacent ranges */
j = i + 1;
while (j < view->nr
&& can_merge(&view->ranges[j-1], &view->ranges[j])) {
- view->ranges[i].addr.size += view->ranges[j].addr.size;
+ int128_addto(&view->ranges[i].addr.size, view->ranges[j].addr.size);
++j;
}
++i;
}
}
+static void memory_region_read_accessor(void *opaque,
+ target_phys_addr_t addr,
+ uint64_t *value,
+ unsigned size,
+ unsigned shift,
+ uint64_t mask)
+{
+ MemoryRegion *mr = opaque;
+ uint64_t tmp;
+
+ tmp = mr->ops->read(mr->opaque, addr, size);
+ *value |= (tmp & mask) << shift;
+}
+
+static void memory_region_write_accessor(void *opaque,
+ target_phys_addr_t addr,
+ uint64_t *value,
+ unsigned size,
+ unsigned shift,
+ uint64_t mask)
+{
+ MemoryRegion *mr = opaque;
+ uint64_t tmp;
+
+ tmp = (*value >> shift) & mask;
+ mr->ops->write(mr->opaque, addr, tmp, size);
+}
+
+static void access_with_adjusted_size(target_phys_addr_t addr,
+ uint64_t *value,
+ unsigned size,
+ unsigned access_size_min,
+ unsigned access_size_max,
+ void (*access)(void *opaque,
+ target_phys_addr_t addr,
+ uint64_t *value,
+ unsigned size,
+ unsigned shift,
+ uint64_t mask),
+ void *opaque)
+{
+ uint64_t access_mask;
+ unsigned access_size;
+ unsigned i;
+
+ if (!access_size_min) {
+ access_size_min = 1;
+ }
+ if (!access_size_max) {
+ access_size_max = 4;
+ }
+ 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 void memory_region_prepare_ram_addr(MemoryRegion *mr);
+
static void as_memory_range_add(AddressSpace *as, FlatRange *fr)
{
ram_addr_t phys_offset, region_offset;
+ memory_region_prepare_ram_addr(fr->mr);
+
phys_offset = fr->mr->ram_addr;
region_offset = fr->offset_in_region;
/* cpu_register_physical_memory_log() wants region_offset for
region_offset = 0;
}
- cpu_register_physical_memory_log(fr->addr.start,
- fr->addr.size,
+ if (!fr->readable) {
+ phys_offset &= ~TARGET_PAGE_MASK & ~IO_MEM_ROMD;
+ }
+
+ if (fr->readonly) {
+ phys_offset |= IO_MEM_ROM;
+ }
+
+ cpu_register_physical_memory_log(int128_get64(fr->addr.start),
+ int128_get64(fr->addr.size),
phys_offset,
region_offset,
fr->dirty_log_mask);
static void as_memory_range_del(AddressSpace *as, FlatRange *fr)
{
- cpu_register_physical_memory(fr->addr.start, fr->addr.size,
+ if (fr->dirty_log_mask) {
+ Int128 end = addrrange_end(fr->addr);
+ cpu_physical_sync_dirty_bitmap(int128_get64(fr->addr.start),
+ int128_get64(end));
+ }
+ cpu_register_physical_memory(int128_get64(fr->addr.start),
+ int128_get64(fr->addr.size),
IO_MEM_UNASSIGNED);
}
static void as_memory_log_start(AddressSpace *as, FlatRange *fr)
{
- cpu_physical_log_start(fr->addr.start, fr->addr.size);
+ cpu_physical_log_start(int128_get64(fr->addr.start),
+ int128_get64(fr->addr.size));
}
static void as_memory_log_stop(AddressSpace *as, FlatRange *fr)
{
- cpu_physical_log_stop(fr->addr.start, fr->addr.size);
+ cpu_physical_log_stop(int128_get64(fr->addr.start),
+ int128_get64(fr->addr.size));
+}
+
+static void as_memory_ioeventfd_add(AddressSpace *as, MemoryRegionIoeventfd *fd)
+{
+ int r;
+
+ assert(fd->match_data && int128_get64(fd->addr.size) == 4);
+
+ r = kvm_set_ioeventfd_mmio_long(fd->fd, int128_get64(fd->addr.start),
+ fd->data, true);
+ if (r < 0) {
+ abort();
+ }
+}
+
+static void as_memory_ioeventfd_del(AddressSpace *as, MemoryRegionIoeventfd *fd)
+{
+ int r;
+
+ r = kvm_set_ioeventfd_mmio_long(fd->fd, int128_get64(fd->addr.start),
+ fd->data, false);
+ if (r < 0) {
+ abort();
+ }
}
static const AddressSpaceOps address_space_ops_memory = {
.range_del = as_memory_range_del,
.log_start = as_memory_log_start,
.log_stop = as_memory_log_stop,
+ .ioeventfd_add = as_memory_ioeventfd_add,
+ .ioeventfd_del = as_memory_ioeventfd_del,
};
static AddressSpace address_space_memory = {
.ops = &address_space_ops_memory,
};
+static 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;
+ }
+ }
+ return NULL;
+}
+
+static void memory_region_iorange_read(IORange *iorange,
+ uint64_t offset,
+ unsigned width,
+ uint64_t *data)
+{
+ MemoryRegion *mr = container_of(iorange, MemoryRegion, iorange);
+
+ if (mr->ops->old_portio) {
+ const MemoryRegionPortio *mrp = find_portio(mr, offset, width, false);
+
+ *data = ((uint64_t)1 << (width * 8)) - 1;
+ if (mrp) {
+ *data = mrp->read(mr->opaque, offset + mr->offset);
+ } else if (width == 2) {
+ mrp = find_portio(mr, offset, 1, false);
+ assert(mrp);
+ *data = mrp->read(mr->opaque, offset + mr->offset) |
+ (mrp->read(mr->opaque, offset + mr->offset + 1) << 8);
+ }
+ return;
+ }
+ *data = 0;
+ access_with_adjusted_size(offset + mr->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)
+{
+ MemoryRegion *mr = container_of(iorange, MemoryRegion, iorange);
+
+ if (mr->ops->old_portio) {
+ const MemoryRegionPortio *mrp = find_portio(mr, offset, width, true);
+
+ if (mrp) {
+ mrp->write(mr->opaque, offset + mr->offset, data);
+ } else if (width == 2) {
+ mrp = find_portio(mr, offset, 1, false);
+ assert(mrp);
+ mrp->write(mr->opaque, offset + mr->offset, data & 0xff);
+ mrp->write(mr->opaque, offset + mr->offset + 1, data >> 8);
+ }
+ return;
+ }
+ access_with_adjusted_size(offset + mr->offset, &data, width,
+ mr->ops->impl.min_access_size,
+ mr->ops->impl.max_access_size,
+ memory_region_write_accessor, mr);
+}
+
+static const IORangeOps memory_region_iorange_ops = {
+ .read = memory_region_iorange_read,
+ .write = memory_region_iorange_write,
+};
+
+static void as_io_range_add(AddressSpace *as, FlatRange *fr)
+{
+ iorange_init(&fr->mr->iorange, &memory_region_iorange_ops,
+ int128_get64(fr->addr.start), int128_get64(fr->addr.size));
+ ioport_register(&fr->mr->iorange);
+}
+
+static void as_io_range_del(AddressSpace *as, FlatRange *fr)
+{
+ isa_unassign_ioport(int128_get64(fr->addr.start),
+ int128_get64(fr->addr.size));
+}
+
+static void as_io_ioeventfd_add(AddressSpace *as, MemoryRegionIoeventfd *fd)
+{
+ int r;
+
+ assert(fd->match_data && int128_get64(fd->addr.size) == 2);
+
+ r = kvm_set_ioeventfd_pio_word(fd->fd, int128_get64(fd->addr.start),
+ fd->data, true);
+ if (r < 0) {
+ abort();
+ }
+}
+
+static void as_io_ioeventfd_del(AddressSpace *as, MemoryRegionIoeventfd *fd)
+{
+ int r;
+
+ r = kvm_set_ioeventfd_pio_word(fd->fd, int128_get64(fd->addr.start),
+ fd->data, false);
+ if (r < 0) {
+ abort();
+ }
+}
+
+static const AddressSpaceOps address_space_ops_io = {
+ .range_add = as_io_range_add,
+ .range_del = as_io_range_del,
+ .ioeventfd_add = as_io_ioeventfd_add,
+ .ioeventfd_del = as_io_ioeventfd_del,
+};
+
+static AddressSpace address_space_io = {
+ .ops = &address_space_ops_io,
+};
+
/* Render a memory region into the global view. Ranges in @view obscure
* ranges in @mr.
*/
static void render_memory_region(FlatView *view,
MemoryRegion *mr,
- target_phys_addr_t base,
- AddrRange clip)
+ Int128 base,
+ AddrRange clip,
+ bool readonly)
{
MemoryRegion *subregion;
unsigned i;
target_phys_addr_t offset_in_region;
- uint64_t remain;
- uint64_t now;
+ Int128 remain;
+ Int128 now;
FlatRange fr;
AddrRange tmp;
- base += mr->addr;
+ int128_addto(&base, int128_make64(mr->addr));
+ readonly |= mr->readonly;
tmp = addrrange_make(base, mr->size);
clip = addrrange_intersection(tmp, clip);
if (mr->alias) {
- base -= mr->alias->addr;
- base -= mr->alias_offset;
- render_memory_region(view, mr->alias, base, clip);
+ int128_subfrom(&base, int128_make64(mr->alias->addr));
+ int128_subfrom(&base, int128_make64(mr->alias_offset));
+ render_memory_region(view, mr->alias, base, clip, readonly);
return;
}
/* Render subregions in priority order. */
QTAILQ_FOREACH(subregion, &mr->subregions, subregions_link) {
- render_memory_region(view, subregion, base, clip);
+ render_memory_region(view, subregion, base, clip, readonly);
}
if (!mr->terminates) {
return;
}
- offset_in_region = clip.start - base;
+ offset_in_region = int128_get64(int128_sub(clip.start, base));
base = clip.start;
remain = clip.size;
/* Render the region itself into any gaps left by the current view. */
- for (i = 0; i < view->nr && remain; ++i) {
- if (base >= addrrange_end(view->ranges[i].addr)) {
+ for (i = 0; i < view->nr && int128_nz(remain); ++i) {
+ if (int128_ge(base, addrrange_end(view->ranges[i].addr))) {
continue;
}
- if (base < view->ranges[i].addr.start) {
- now = MIN(remain, view->ranges[i].addr.start - base);
+ if (int128_lt(base, view->ranges[i].addr.start)) {
+ now = int128_min(remain,
+ int128_sub(view->ranges[i].addr.start, base));
fr.mr = mr;
fr.offset_in_region = offset_in_region;
fr.addr = addrrange_make(base, now);
fr.dirty_log_mask = mr->dirty_log_mask;
+ fr.readable = mr->readable;
+ fr.readonly = readonly;
flatview_insert(view, i, &fr);
++i;
- base += now;
- offset_in_region += now;
- remain -= now;
+ int128_addto(&base, now);
+ offset_in_region += int128_get64(now);
+ int128_subfrom(&remain, now);
}
- if (base == view->ranges[i].addr.start) {
- now = MIN(remain, view->ranges[i].addr.size);
- base += now;
- offset_in_region += now;
- remain -= now;
+ if (int128_eq(base, view->ranges[i].addr.start)) {
+ now = int128_min(remain, view->ranges[i].addr.size);
+ int128_addto(&base, now);
+ offset_in_region += int128_get64(now);
+ int128_subfrom(&remain, now);
}
}
- if (remain) {
+ if (int128_nz(remain)) {
fr.mr = mr;
fr.offset_in_region = offset_in_region;
fr.addr = addrrange_make(base, remain);
fr.dirty_log_mask = mr->dirty_log_mask;
+ fr.readable = mr->readable;
+ fr.readonly = readonly;
flatview_insert(view, i, &fr);
}
}
flatview_init(&view);
- render_memory_region(&view, mr, 0, addrrange_make(0, UINT64_MAX));
+ render_memory_region(&view, mr, int128_zero(),
+ addrrange_make(int128_zero(), int128_2_64()), false);
flatview_simplify(&view);
return view;
}
-static void address_space_update_topology(AddressSpace *as)
+static void address_space_add_del_ioeventfds(AddressSpace *as,
+ MemoryRegionIoeventfd *fds_new,
+ unsigned fds_new_nb,
+ MemoryRegionIoeventfd *fds_old,
+ unsigned fds_old_nb)
+{
+ unsigned iold, inew;
+
+ /* Generate a symmetric difference of the old and new fd sets, adding
+ * and deleting as necessary.
+ */
+
+ iold = inew = 0;
+ while (iold < fds_old_nb || inew < fds_new_nb) {
+ if (iold < fds_old_nb
+ && (inew == fds_new_nb
+ || memory_region_ioeventfd_before(fds_old[iold],
+ fds_new[inew]))) {
+ as->ops->ioeventfd_del(as, &fds_old[iold]);
+ ++iold;
+ } else if (inew < fds_new_nb
+ && (iold == fds_old_nb
+ || memory_region_ioeventfd_before(fds_new[inew],
+ fds_old[iold]))) {
+ as->ops->ioeventfd_add(as, &fds_new[inew]);
+ ++inew;
+ } else {
+ ++iold;
+ ++inew;
+ }
+ }
+}
+
+static void address_space_update_ioeventfds(AddressSpace *as)
+{
+ FlatRange *fr;
+ unsigned ioeventfd_nb = 0;
+ MemoryRegionIoeventfd *ioeventfds = NULL;
+ AddrRange tmp;
+ unsigned i;
+
+ FOR_EACH_FLAT_RANGE(fr, &as->current_map) {
+ for (i = 0; i < fr->mr->ioeventfd_nb; ++i) {
+ tmp = addrrange_shift(fr->mr->ioeventfds[i].addr,
+ int128_sub(fr->addr.start,
+ int128_make64(fr->offset_in_region)));
+ if (addrrange_intersects(fr->addr, tmp)) {
+ ++ioeventfd_nb;
+ ioeventfds = g_realloc(ioeventfds,
+ ioeventfd_nb * sizeof(*ioeventfds));
+ ioeventfds[ioeventfd_nb-1] = fr->mr->ioeventfds[i];
+ ioeventfds[ioeventfd_nb-1].addr = tmp;
+ }
+ }
+ }
+
+ address_space_add_del_ioeventfds(as, ioeventfds, ioeventfd_nb,
+ as->ioeventfds, as->ioeventfd_nb);
+
+ g_free(as->ioeventfds);
+ as->ioeventfds = ioeventfds;
+ as->ioeventfd_nb = ioeventfd_nb;
+}
+
+static void address_space_update_topology_pass(AddressSpace *as,
+ FlatView old_view,
+ FlatView new_view,
+ bool adding)
{
- FlatView old_view = as->current_map;
- FlatView new_view = generate_memory_topology(as->root);
unsigned iold, inew;
FlatRange *frold, *frnew;
if (frold
&& (!frnew
- || frold->addr.start < frnew->addr.start
- || (frold->addr.start == frnew->addr.start
+ || int128_lt(frold->addr.start, frnew->addr.start)
+ || (int128_eq(frold->addr.start, frnew->addr.start)
&& !flatrange_equal(frold, frnew)))) {
/* In old, but (not in new, or in new but attributes changed). */
- as->ops->range_del(as, frold);
+ if (!adding) {
+ as->ops->range_del(as, frold);
+ }
+
++iold;
} else if (frold && frnew && flatrange_equal(frold, frnew)) {
/* In both (logging may have changed) */
- if (frold->dirty_log_mask && !frnew->dirty_log_mask) {
- as->ops->log_stop(as, frnew);
- } else if (frnew->dirty_log_mask && !frold->dirty_log_mask) {
- as->ops->log_start(as, frnew);
+ if (adding) {
+ if (frold->dirty_log_mask && !frnew->dirty_log_mask) {
+ as->ops->log_stop(as, frnew);
+ } else if (frnew->dirty_log_mask && !frold->dirty_log_mask) {
+ as->ops->log_start(as, frnew);
+ }
}
++iold;
} else {
/* In new */
- as->ops->range_add(as, frnew);
+ if (adding) {
+ as->ops->range_add(as, frnew);
+ }
+
++inew;
}
}
+}
+
+
+static void address_space_update_topology(AddressSpace *as)
+{
+ FlatView old_view = as->current_map;
+ 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);
+ address_space_update_ioeventfds(as);
}
static void memory_region_update_topology(void)
{
- address_space_update_topology(&address_space_memory);
+ if (memory_region_transaction_depth) {
+ return;
+ }
+
+ if (address_space_memory.root) {
+ address_space_update_topology(&address_space_memory);
+ }
+ if (address_space_io.root) {
+ address_space_update_topology(&address_space_io);
+ }
+}
+
+void memory_region_transaction_begin(void)
+{
+ ++memory_region_transaction_depth;
+}
+
+void memory_region_transaction_commit(void)
+{
+ assert(memory_region_transaction_depth);
+ --memory_region_transaction_depth;
+ memory_region_update_topology();
+}
+
+static void memory_region_destructor_none(MemoryRegion *mr)
+{
+}
+
+static void memory_region_destructor_ram(MemoryRegion *mr)
+{
+ qemu_ram_free(mr->ram_addr);
+}
+
+static void memory_region_destructor_ram_from_ptr(MemoryRegion *mr)
+{
+ qemu_ram_free_from_ptr(mr->ram_addr);
+}
+
+static void memory_region_destructor_iomem(MemoryRegion *mr)
+{
+ cpu_unregister_io_memory(mr->ram_addr);
+}
+
+static void memory_region_destructor_rom_device(MemoryRegion *mr)
+{
+ qemu_ram_free(mr->ram_addr & TARGET_PAGE_MASK);
+ cpu_unregister_io_memory(mr->ram_addr & ~(TARGET_PAGE_MASK | IO_MEM_ROMD));
}
void memory_region_init(MemoryRegion *mr,
{
mr->ops = NULL;
mr->parent = NULL;
- mr->size = size;
+ mr->size = int128_make64(size);
+ if (size == UINT64_MAX) {
+ mr->size = int128_2_64();
+ }
mr->addr = 0;
mr->offset = 0;
mr->terminates = false;
+ mr->readable = true;
+ mr->readonly = false;
+ mr->destructor = memory_region_destructor_none;
mr->priority = 0;
mr->may_overlap = false;
mr->alias = NULL;
QTAILQ_INIT(&mr->subregions);
memset(&mr->subregions_link, 0, sizeof mr->subregions_link);
QTAILQ_INIT(&mr->coalesced);
- mr->name = qemu_strdup(name);
+ mr->name = g_strdup(name);
mr->dirty_log_mask = 0;
+ mr->ioeventfd_nb = 0;
+ mr->ioeventfds = NULL;
}
static bool memory_region_access_valid(MemoryRegion *mr,
unsigned size)
{
MemoryRegion *mr = _mr;
- unsigned access_size, access_size_min, access_size_max;
- uint64_t access_mask;
- uint32_t data = 0, tmp;
- unsigned i;
+ uint64_t data = 0;
if (!memory_region_access_valid(mr, addr, size)) {
return -1U; /* FIXME: better signalling */
}
- /* FIXME: support unaligned access */
-
- access_size_min = mr->ops->impl.min_access_size;
- if (!access_size_min) {
- access_size_min = 1;
- }
- access_size_max = mr->ops->impl.max_access_size;
- if (!access_size_max) {
- access_size_max = 4;
- }
- access_size = MAX(MIN(size, access_size_max), access_size_min);
- access_mask = -1ULL >> (64 - access_size * 8);
- addr += mr->offset;
- for (i = 0; i < size; i += access_size) {
- /* FIXME: big-endian support */
- tmp = mr->ops->read(mr->opaque, addr + i, access_size);
- data |= (tmp & access_mask) << (i * 8);
+ if (!mr->ops->read) {
+ return mr->ops->old_mmio.read[bitops_ffsl(size)](mr->opaque, addr);
}
+ /* FIXME: support unaligned access */
+ access_with_adjusted_size(addr + mr->offset, &data, size,
+ mr->ops->impl.min_access_size,
+ mr->ops->impl.max_access_size,
+ memory_region_read_accessor, mr);
+
return data;
}
uint64_t data)
{
MemoryRegion *mr = _mr;
- unsigned access_size, access_size_min, access_size_max;
- uint64_t access_mask;
- unsigned i;
if (!memory_region_access_valid(mr, addr, size)) {
return; /* FIXME: better signalling */
}
- /* FIXME: support unaligned access */
-
- access_size_min = mr->ops->impl.min_access_size;
- if (!access_size_min) {
- access_size_min = 1;
- }
- access_size_max = mr->ops->impl.max_access_size;
- if (!access_size_max) {
- access_size_max = 4;
- }
- access_size = MAX(MIN(size, access_size_max), access_size_min);
- access_mask = -1ULL >> (64 - access_size * 8);
- addr += mr->offset;
- for (i = 0; i < size; i += access_size) {
- /* FIXME: big-endian support */
- mr->ops->write(mr->opaque, addr + i, (data >> (i * 8)) & access_mask,
- access_size);
+ if (!mr->ops->write) {
+ mr->ops->old_mmio.write[bitops_ffsl(size)](mr->opaque, addr, data);
+ return;
}
+
+ /* FIXME: support unaligned access */
+ access_with_adjusted_size(addr + mr->offset, &data, size,
+ mr->ops->impl.min_access_size,
+ mr->ops->impl.max_access_size,
+ memory_region_write_accessor, mr);
}
static uint32_t memory_region_read_thunk_b(void *mr, target_phys_addr_t addr)
memory_region_write_thunk_l,
};
+static void memory_region_prepare_ram_addr(MemoryRegion *mr)
+{
+ if (mr->backend_registered) {
+ return;
+ }
+
+ mr->destructor = memory_region_destructor_iomem;
+ mr->ram_addr = cpu_register_io_memory(memory_region_read_thunk,
+ memory_region_write_thunk,
+ mr,
+ mr->ops->endianness);
+ mr->backend_registered = true;
+}
+
void memory_region_init_io(MemoryRegion *mr,
const MemoryRegionOps *ops,
void *opaque,
mr->ops = ops;
mr->opaque = opaque;
mr->terminates = true;
- mr->ram_addr = cpu_register_io_memory(memory_region_read_thunk,
- memory_region_write_thunk,
- mr,
- mr->ops->endianness);
+ mr->backend_registered = false;
}
void memory_region_init_ram(MemoryRegion *mr,
{
memory_region_init(mr, name, size);
mr->terminates = true;
+ mr->destructor = memory_region_destructor_ram;
mr->ram_addr = qemu_ram_alloc(dev, name, size);
+ mr->backend_registered = true;
}
void memory_region_init_ram_ptr(MemoryRegion *mr,
{
memory_region_init(mr, name, size);
mr->terminates = true;
+ mr->destructor = memory_region_destructor_ram_from_ptr;
mr->ram_addr = qemu_ram_alloc_from_ptr(dev, name, size, ptr);
+ mr->backend_registered = true;
}
void memory_region_init_alias(MemoryRegion *mr,
mr->alias_offset = offset;
}
+void memory_region_init_rom_device(MemoryRegion *mr,
+ const MemoryRegionOps *ops,
+ void *opaque,
+ DeviceState *dev,
+ const char *name,
+ uint64_t size)
+{
+ memory_region_init(mr, name, size);
+ mr->ops = ops;
+ mr->opaque = opaque;
+ mr->terminates = true;
+ mr->destructor = memory_region_destructor_rom_device;
+ mr->ram_addr = qemu_ram_alloc(dev, name, size);
+ mr->ram_addr |= cpu_register_io_memory(memory_region_read_thunk,
+ memory_region_write_thunk,
+ mr,
+ mr->ops->endianness);
+ mr->ram_addr |= IO_MEM_ROMD;
+ mr->backend_registered = true;
+}
+
void memory_region_destroy(MemoryRegion *mr)
{
assert(QTAILQ_EMPTY(&mr->subregions));
+ mr->destructor(mr);
memory_region_clear_coalescing(mr);
- qemu_free((char *)mr->name);
+ g_free((char *)mr->name);
+ g_free(mr->ioeventfds);
}
uint64_t memory_region_size(MemoryRegion *mr)
{
- return mr->size;
+ if (int128_eq(mr->size, int128_2_64())) {
+ return UINT64_MAX;
+ }
+ return int128_get64(mr->size);
}
void memory_region_set_offset(MemoryRegion *mr, target_phys_addr_t offset)
FOR_EACH_FLAT_RANGE(fr, &address_space_memory.current_map) {
if (fr->mr == mr) {
- cpu_physical_sync_dirty_bitmap(fr->addr.start,
- fr->addr.start + fr->addr.size);
+ cpu_physical_sync_dirty_bitmap(int128_get64(fr->addr.start),
+ int128_get64(addrrange_end(fr->addr)));
}
}
}
void memory_region_set_readonly(MemoryRegion *mr, bool readonly)
{
- /* FIXME */
+ if (mr->readonly != readonly) {
+ mr->readonly = readonly;
+ memory_region_update_topology();
+ }
+}
+
+void memory_region_rom_device_set_readable(MemoryRegion *mr, bool readable)
+{
+ if (mr->readable != readable) {
+ mr->readable = readable;
+ memory_region_update_topology();
+ }
}
void memory_region_reset_dirty(MemoryRegion *mr, target_phys_addr_t addr,
assert(mr->terminates);
- return qemu_get_ram_ptr(mr->ram_addr);
+ return qemu_get_ram_ptr(mr->ram_addr & TARGET_PAGE_MASK);
}
static void memory_region_update_coalesced_range(MemoryRegion *mr)
FOR_EACH_FLAT_RANGE(fr, &address_space_memory.current_map) {
if (fr->mr == mr) {
- qemu_unregister_coalesced_mmio(fr->addr.start, fr->addr.size);
+ qemu_unregister_coalesced_mmio(int128_get64(fr->addr.start),
+ int128_get64(fr->addr.size));
QTAILQ_FOREACH(cmr, &mr->coalesced, link) {
tmp = addrrange_shift(cmr->addr,
- fr->addr.start - fr->offset_in_region);
+ int128_sub(fr->addr.start,
+ int128_make64(fr->offset_in_region)));
if (!addrrange_intersects(tmp, fr->addr)) {
continue;
}
tmp = addrrange_intersection(tmp, fr->addr);
- qemu_register_coalesced_mmio(tmp.start, tmp.size);
+ qemu_register_coalesced_mmio(int128_get64(tmp.start),
+ int128_get64(tmp.size));
}
}
}
void memory_region_set_coalescing(MemoryRegion *mr)
{
memory_region_clear_coalescing(mr);
- memory_region_add_coalescing(mr, 0, mr->size);
+ memory_region_add_coalescing(mr, 0, int128_get64(mr->size));
}
void memory_region_add_coalescing(MemoryRegion *mr,
target_phys_addr_t offset,
uint64_t size)
{
- CoalescedMemoryRange *cmr = qemu_malloc(sizeof(*cmr));
+ CoalescedMemoryRange *cmr = g_malloc(sizeof(*cmr));
- cmr->addr = addrrange_make(offset, size);
+ cmr->addr = addrrange_make(int128_make64(offset), int128_make64(size));
QTAILQ_INSERT_TAIL(&mr->coalesced, cmr, link);
memory_region_update_coalesced_range(mr);
}
while (!QTAILQ_EMPTY(&mr->coalesced)) {
cmr = QTAILQ_FIRST(&mr->coalesced);
QTAILQ_REMOVE(&mr->coalesced, cmr, link);
- qemu_free(cmr);
+ g_free(cmr);
}
memory_region_update_coalesced_range(mr);
}
+void memory_region_add_eventfd(MemoryRegion *mr,
+ target_phys_addr_t addr,
+ unsigned size,
+ bool match_data,
+ uint64_t data,
+ int fd)
+{
+ MemoryRegionIoeventfd mrfd = {
+ .addr.start = int128_make64(addr),
+ .addr.size = int128_make64(size),
+ .match_data = match_data,
+ .data = data,
+ .fd = fd,
+ };
+ unsigned i;
+
+ for (i = 0; i < mr->ioeventfd_nb; ++i) {
+ if (memory_region_ioeventfd_before(mrfd, mr->ioeventfds[i])) {
+ break;
+ }
+ }
+ ++mr->ioeventfd_nb;
+ mr->ioeventfds = g_realloc(mr->ioeventfds,
+ sizeof(*mr->ioeventfds) * mr->ioeventfd_nb);
+ memmove(&mr->ioeventfds[i+1], &mr->ioeventfds[i],
+ sizeof(*mr->ioeventfds) * (mr->ioeventfd_nb-1 - i));
+ mr->ioeventfds[i] = mrfd;
+ memory_region_update_topology();
+}
+
+void memory_region_del_eventfd(MemoryRegion *mr,
+ target_phys_addr_t addr,
+ unsigned size,
+ bool match_data,
+ uint64_t data,
+ int fd)
+{
+ MemoryRegionIoeventfd mrfd = {
+ .addr.start = int128_make64(addr),
+ .addr.size = int128_make64(size),
+ .match_data = match_data,
+ .data = data,
+ .fd = fd,
+ };
+ unsigned i;
+
+ for (i = 0; i < mr->ioeventfd_nb; ++i) {
+ if (memory_region_ioeventfd_equal(mrfd, mr->ioeventfds[i])) {
+ break;
+ }
+ }
+ assert(i != mr->ioeventfd_nb);
+ memmove(&mr->ioeventfds[i], &mr->ioeventfds[i+1],
+ sizeof(*mr->ioeventfds) * (mr->ioeventfd_nb - (i+1)));
+ --mr->ioeventfd_nb;
+ mr->ioeventfds = g_realloc(mr->ioeventfds,
+ sizeof(*mr->ioeventfds)*mr->ioeventfd_nb + 1);
+ memory_region_update_topology();
+}
+
static void memory_region_add_subregion_common(MemoryRegion *mr,
target_phys_addr_t offset,
MemoryRegion *subregion)
if (subregion->may_overlap || other->may_overlap) {
continue;
}
- if (offset >= other->offset + other->size
- || offset + subregion->size <= other->offset) {
+ if (int128_gt(int128_make64(offset),
+ int128_add(int128_make64(other->addr), other->size))
+ || int128_le(int128_add(int128_make64(offset), subregion->size),
+ int128_make64(other->addr))) {
continue;
}
- printf("warning: subregion collision %llx/%llx vs %llx/%llx\n",
+#if 0
+ printf("warning: subregion collision %llx/%llx (%s) "
+ "vs %llx/%llx (%s)\n",
(unsigned long long)offset,
- (unsigned long long)subregion->size,
- (unsigned long long)other->offset,
- (unsigned long long)other->size);
+ (unsigned long long)int128_get64(subregion->size),
+ subregion->name,
+ (unsigned long long)other->addr,
+ (unsigned long long)int128_get64(other->size),
+ other->name);
+#endif
}
QTAILQ_FOREACH(other, &mr->subregions, subregions_link) {
if (subregion->priority >= other->priority) {
address_space_memory.root = mr;
memory_region_update_topology();
}
+
+void set_system_io_map(MemoryRegion *mr)
+{
+ address_space_io.root = mr;
+ memory_region_update_topology();
+}
+
+typedef struct MemoryRegionList MemoryRegionList;
+
+struct MemoryRegionList {
+ const MemoryRegion *mr;
+ bool printed;
+ QTAILQ_ENTRY(MemoryRegionList) queue;
+};
+
+typedef QTAILQ_HEAD(queue, MemoryRegionList) MemoryRegionListHead;
+
+static void mtree_print_mr(fprintf_function mon_printf, void *f,
+ const MemoryRegion *mr, unsigned int level,
+ target_phys_addr_t base,
+ MemoryRegionListHead *alias_print_queue)
+{
+ MemoryRegionList *new_ml, *ml, *next_ml;
+ MemoryRegionListHead submr_print_queue;
+ const MemoryRegion *submr;
+ unsigned int i;
+
+ if (!mr) {
+ return;
+ }
+
+ for (i = 0; i < level; i++) {
+ mon_printf(f, " ");
+ }
+
+ if (mr->alias) {
+ MemoryRegionList *ml;
+ bool found = false;
+
+ /* check if the alias is already in the queue */
+ QTAILQ_FOREACH(ml, alias_print_queue, queue) {
+ if (ml->mr == mr->alias && !ml->printed) {
+ found = true;
+ }
+ }
+
+ if (!found) {
+ ml = g_new(MemoryRegionList, 1);
+ ml->mr = mr->alias;
+ ml->printed = false;
+ QTAILQ_INSERT_TAIL(alias_print_queue, ml, queue);
+ }
+ mon_printf(f, TARGET_FMT_plx "-" TARGET_FMT_plx " (prio %d): alias %s @%s "
+ TARGET_FMT_plx "-" TARGET_FMT_plx "\n",
+ base + mr->addr,
+ base + mr->addr
+ + (target_phys_addr_t)int128_get64(mr->size) - 1,
+ mr->priority,
+ mr->name,
+ mr->alias->name,
+ mr->alias_offset,
+ mr->alias_offset
+ + (target_phys_addr_t)int128_get64(mr->size) - 1);
+ } else {
+ mon_printf(f, TARGET_FMT_plx "-" TARGET_FMT_plx " (prio %d): %s\n",
+ base + mr->addr,
+ base + mr->addr
+ + (target_phys_addr_t)int128_get64(mr->size) - 1,
+ mr->priority,
+ mr->name);
+ }
+
+ QTAILQ_INIT(&submr_print_queue);
+
+ QTAILQ_FOREACH(submr, &mr->subregions, subregions_link) {
+ new_ml = g_new(MemoryRegionList, 1);
+ new_ml->mr = submr;
+ QTAILQ_FOREACH(ml, &submr_print_queue, queue) {
+ if (new_ml->mr->addr < ml->mr->addr ||
+ (new_ml->mr->addr == ml->mr->addr &&
+ new_ml->mr->priority > ml->mr->priority)) {
+ QTAILQ_INSERT_BEFORE(ml, new_ml, queue);
+ new_ml = NULL;
+ break;
+ }
+ }
+ if (new_ml) {
+ QTAILQ_INSERT_TAIL(&submr_print_queue, new_ml, queue);
+ }
+ }
+
+ QTAILQ_FOREACH(ml, &submr_print_queue, queue) {
+ mtree_print_mr(mon_printf, f, ml->mr, level + 1, base + mr->addr,
+ alias_print_queue);
+ }
+
+ QTAILQ_FOREACH_SAFE(ml, &submr_print_queue, queue, next_ml) {
+ g_free(ml);
+ }
+}
+
+void mtree_info(fprintf_function mon_printf, void *f)
+{
+ MemoryRegionListHead ml_head;
+ MemoryRegionList *ml, *ml2;
+
+ QTAILQ_INIT(&ml_head);
+
+ mon_printf(f, "memory\n");
+ mtree_print_mr(mon_printf, f, address_space_memory.root, 0, 0, &ml_head);
+
+ /* print aliased regions */
+ QTAILQ_FOREACH(ml, &ml_head, queue) {
+ if (!ml->printed) {
+ mon_printf(f, "%s\n", ml->mr->name);
+ mtree_print_mr(mon_printf, f, ml->mr, 0, 0, &ml_head);
+ }
+ }
+
+ QTAILQ_FOREACH_SAFE(ml, &ml_head, queue, ml2) {
+ g_free(ml);
+ }
+
+ if (address_space_io.root &&
+ !QTAILQ_EMPTY(&address_space_io.root->subregions)) {
+ QTAILQ_INIT(&ml_head);
+ mon_printf(f, "I/O\n");
+ mtree_print_mr(mon_printf, f, address_space_io.root, 0, 0, &ml_head);
+ }
+}
projects / qemu.git / blobdiff