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authorPeter Crosthwaite <peter.crosthwaite@xilinx.com>2014-06-05 23:15:52 -0700
committerPaolo Bonzini <pbonzini@redhat.com>2014-07-01 10:20:41 +0200
commitb4fefef9d52003b6d09866501275a9a57995c6b0 (patch)
tree6d9c67e1e535afd09aa7d37609f4871d0ce3ec8b
parentb5c2c3d0c81ea97ac8443113b9a7a0c0ce25368e (diff)
downloadqemu-arm-b4fefef9d52003b6d09866501275a9a57995c6b0.tar.gz
memory: MemoryRegion: QOMify
QOMify memory regions as an Object. The former init() and destroy() routines become instance_init() and instance_finalize() resp. memory_region_init() is re-implemented to be: object_initialize() + set fields memory_region_destroy() is re-implemented to call unparent(). Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> [Add newly-created MR as child, unparent on destruction. - Paolo] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
-rw-r--r--exec.c4
-rw-r--r--include/exec/memory.h6
-rw-r--r--memory.c121
3 files changed, 109 insertions, 22 deletions
diff --git a/exec.c b/exec.c
index 18d6c35942..df4a080619 100644
--- a/exec.c
+++ b/exec.c
@@ -883,7 +883,7 @@ static void phys_section_destroy(MemoryRegion *mr)
if (mr->subpage) {
subpage_t *subpage = container_of(mr, subpage_t, iomem);
- memory_region_destroy(&subpage->iomem);
+ object_unref(OBJECT(&subpage->iomem));
g_free(subpage);
}
}
@@ -1768,7 +1768,7 @@ static subpage_t *subpage_init(AddressSpace *as, hwaddr base)
mmio->as = as;
mmio->base = base;
memory_region_init_io(&mmio->iomem, NULL, &subpage_ops, mmio,
- "subpage", TARGET_PAGE_SIZE);
+ NULL, TARGET_PAGE_SIZE);
mmio->iomem.subpage = true;
#if defined(DEBUG_SUBPAGE)
printf("%s: %p base " TARGET_FMT_plx " len %08x\n", __func__,
diff --git a/include/exec/memory.h b/include/exec/memory.h
index 3d778d70f0..85b56e2e0c 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -32,10 +32,15 @@
#include "qemu/int128.h"
#include "qemu/notify.h"
#include "qapi/error.h"
+#include "qom/object.h"
#define MAX_PHYS_ADDR_SPACE_BITS 62
#define MAX_PHYS_ADDR (((hwaddr)1 << MAX_PHYS_ADDR_SPACE_BITS) - 1)
+#define TYPE_MEMORY_REGION "qemu:memory-region"
+#define MEMORY_REGION(obj) \
+ OBJECT_CHECK(MemoryRegion, (obj), TYPE_MEMORY_REGION)
+
typedef struct MemoryRegionOps MemoryRegionOps;
typedef struct MemoryRegionMmio MemoryRegionMmio;
@@ -131,6 +136,7 @@ typedef struct CoalescedMemoryRange CoalescedMemoryRange;
typedef struct MemoryRegionIoeventfd MemoryRegionIoeventfd;
struct MemoryRegion {
+ Object parent_obj;
/* All fields are private - violators will be prosecuted */
const MemoryRegionOps *ops;
const MemoryRegionIOMMUOps *iommu_ops;
diff --git a/memory.c b/memory.c
index 7eaa1e9fd4..9397fecd2c 100644
--- a/memory.c
+++ b/memory.c
@@ -842,40 +842,94 @@ static void memory_region_destructor_rom_device(MemoryRegion *mr)
qemu_ram_free(mr->ram_addr & TARGET_PAGE_MASK);
}
+static bool memory_region_need_escape(char c)
+{
+ return c == '/' || c == '[' || c == '\\' || c == ']';
+}
+
+static char *memory_region_escape_name(const char *name)
+{
+ const char *p;
+ char *escaped, *q;
+ uint8_t c;
+ size_t bytes = 0;
+
+ for (p = name; *p; p++) {
+ bytes += memory_region_need_escape(*p) ? 4 : 1;
+ }
+ if (bytes == p - name) {
+ return g_memdup(name, bytes + 1);
+ }
+
+ escaped = g_malloc(bytes + 1);
+ for (p = name, q = escaped; *p; p++) {
+ c = *p;
+ if (unlikely(memory_region_need_escape(c))) {
+ *q++ = '\\';
+ *q++ = 'x';
+ *q++ = "0123456789abcdef"[c >> 4];
+ c = "0123456789abcdef"[c & 15];
+ }
+ *q++ = c;
+ }
+ *q = 0;
+ return escaped;
+}
+
+static void object_property_add_child_array(Object *owner,
+ const char *name,
+ Object *child)
+{
+ int i;
+ char *base_name = memory_region_escape_name(name);
+
+ for (i = 0; ; i++) {
+ char *full_name = g_strdup_printf("%s[%d]", base_name, i);
+ Error *local_err = NULL;
+
+ object_property_add_child(owner, full_name, child, &local_err);
+ g_free(full_name);
+ if (!local_err) {
+ break;
+ }
+
+ error_free(local_err);
+ }
+
+ g_free(base_name);
+}
+
+
void memory_region_init(MemoryRegion *mr,
Object *owner,
const char *name,
uint64_t size)
{
- mr->ops = &unassigned_mem_ops;
- mr->opaque = NULL;
+ object_initialize(mr, sizeof(*mr), TYPE_MEMORY_REGION);
+
mr->owner = owner ? owner : qdev_get_machine();
- mr->iommu_ops = NULL;
- mr->container = NULL;
mr->size = int128_make64(size);
if (size == UINT64_MAX) {
mr->size = int128_2_64();
}
- mr->addr = 0;
- mr->subpage = false;
+ mr->name = g_strdup(name);
+
+ if (name) {
+ object_property_add_child_array(mr->owner, name, OBJECT(mr));
+ object_unref(OBJECT(mr));
+ }
+}
+
+static void memory_region_initfn(Object *obj)
+{
+ MemoryRegion *mr = MEMORY_REGION(obj);
+
+ mr->ops = &unassigned_mem_ops;
mr->enabled = true;
- mr->terminates = false;
- mr->ram = false;
mr->romd_mode = true;
- mr->readonly = false;
- mr->rom_device = 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 = g_strdup(name);
- mr->dirty_log_mask = 0;
- mr->ioeventfd_nb = 0;
- mr->ioeventfds = NULL;
- mr->flush_coalesced_mmio = false;
}
static uint64_t unassigned_mem_read(void *opaque, hwaddr addr,
@@ -1113,8 +1167,10 @@ void memory_region_init_reservation(MemoryRegion *mr,
memory_region_init_io(mr, owner, &unassigned_mem_ops, mr, name, size);
}
-void memory_region_destroy(MemoryRegion *mr)
+static void memory_region_finalize(Object *obj)
{
+ MemoryRegion *mr = MEMORY_REGION(obj);
+
assert(QTAILQ_EMPTY(&mr->subregions));
assert(memory_region_transaction_depth == 0);
mr->destructor(mr);
@@ -1123,6 +1179,12 @@ void memory_region_destroy(MemoryRegion *mr)
g_free(mr->ioeventfds);
}
+void memory_region_destroy(MemoryRegion *mr)
+{
+ object_unparent(OBJECT(mr));
+}
+
+
Object *memory_region_owner(MemoryRegion *mr)
{
return mr->owner;
@@ -1132,6 +1194,8 @@ void memory_region_ref(MemoryRegion *mr)
{
if (mr && mr->owner) {
object_ref(mr->owner);
+ } else {
+ object_ref(OBJECT(mr));
}
}
@@ -1139,6 +1203,8 @@ void memory_region_unref(MemoryRegion *mr)
{
if (mr && mr->owner) {
object_unref(mr->owner);
+ } else {
+ object_unref(OBJECT(mr));
}
}
@@ -1946,3 +2012,18 @@ void mtree_info(fprintf_function mon_printf, void *f)
g_free(ml);
}
}
+
+static const TypeInfo memory_region_info = {
+ .parent = TYPE_OBJECT,
+ .name = TYPE_MEMORY_REGION,
+ .instance_size = sizeof(MemoryRegion),
+ .instance_init = memory_region_initfn,
+ .instance_finalize = memory_region_finalize,
+};
+
+static void memory_register_types(void)
+{
+ type_register_static(&memory_region_info);
+}
+
+type_init(memory_register_types)