Merge remote-tracking branch 'stefanha/block' into staging

[qemu.git] / memory_mapping.c

diff --git a/memory_mapping.c b/memory_mapping.c
index 718f271849da2e3e3f22a4d9c88038d72ce63c57..ff45b3a2393f28d326feeeaf962ec387a2e917ab 100644 (file)
--- a/memory_mapping.c
+++ b/memory_mapping.c
@@ -6,14 +6,14 @@
  * Authors:
  *     Wen Congyang <wency@cn.fujitsu.com>
  *
- * This work is licensed under the terms of the GNU GPL, version 2. See
- * the COPYING file in the top-level directory.
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
  *
  */
 
 #include "cpu.h"
-#include "cpu-all.h"
-#include "memory_mapping.h"
+#include "exec/cpu-all.h"
+#include "sysemu/memory_mapping.h"
 
 static void memory_mapping_list_add_mapping_sorted(MemoryMappingList *list,
                                                    MemoryMapping *mapping)
@@ -30,8 +30,8 @@ static void memory_mapping_list_add_mapping_sorted(MemoryMappingList *list,
 }
 
 static void create_new_memory_mapping(MemoryMappingList *list,
-                                      target_phys_addr_t phys_addr,
-                                      target_phys_addr_t virt_addr,
+                                      hwaddr phys_addr,
+                                      hwaddr virt_addr,
                                       ram_addr_t length)
 {
     MemoryMapping *memory_mapping;
@@ -46,8 +46,8 @@ static void create_new_memory_mapping(MemoryMappingList *list,
 }
 
 static inline bool mapping_contiguous(MemoryMapping *map,
-                                      target_phys_addr_t phys_addr,
-                                      target_phys_addr_t virt_addr)
+                                      hwaddr phys_addr,
+                                      hwaddr virt_addr)
 {
     return phys_addr == map->phys_addr + map->length &&
            virt_addr == map->virt_addr + map->length;
@@ -58,7 +58,7 @@ static inline bool mapping_contiguous(MemoryMapping *map,
  * [phys_addr, phys_addr + length) have intersection?
  */
 static inline bool mapping_have_same_region(MemoryMapping *map,
-                                            target_phys_addr_t phys_addr,
+                                            hwaddr phys_addr,
                                             ram_addr_t length)
 {
     return !(phys_addr + length < map->phys_addr ||
@@ -71,8 +71,8 @@ static inline bool mapping_have_same_region(MemoryMapping *map,
  * intersection are the same?
  */
 static inline bool mapping_conflict(MemoryMapping *map,
-                                    target_phys_addr_t phys_addr,
-                                    target_phys_addr_t virt_addr)
+                                    hwaddr phys_addr,
+                                    hwaddr virt_addr)
 {
     return virt_addr - map->virt_addr != phys_addr - map->phys_addr;
 }
@@ -83,7 +83,7 @@ static inline bool mapping_conflict(MemoryMapping *map,
  * in the intersection are the same.
  */
 static inline void mapping_merge(MemoryMapping *map,
-                                 target_phys_addr_t virt_addr,
+                                 hwaddr virt_addr,
                                  ram_addr_t length)
 {
     if (virt_addr < map->virt_addr) {
@@ -98,8 +98,8 @@ static inline void mapping_merge(MemoryMapping *map,
 }
 
 void memory_mapping_list_add_merge_sorted(MemoryMappingList *list,
-                                          target_phys_addr_t phys_addr,
-                                          target_phys_addr_t virt_addr,
+                                          hwaddr phys_addr,
+                                          hwaddr virt_addr,
                                           ram_addr_t length)
 {
     MemoryMapping *memory_mapping, *last_mapping;
@@ -164,3 +164,83 @@ void memory_mapping_list_init(MemoryMappingList *list)
     list->last_mapping = NULL;
     QTAILQ_INIT(&list->head);
 }
+
+static CPUArchState *find_paging_enabled_cpu(CPUArchState *start_cpu)
+{
+    CPUArchState *env;
+
+    for (env = start_cpu; env != NULL; env = env->next_cpu) {
+        if (cpu_paging_enabled(env)) {
+            return env;
+        }
+    }
+
+    return NULL;
+}
+
+int qemu_get_guest_memory_mapping(MemoryMappingList *list)
+{
+    CPUArchState *env, *first_paging_enabled_cpu;
+    RAMBlock *block;
+    ram_addr_t offset, length;
+    int ret;
+
+    first_paging_enabled_cpu = find_paging_enabled_cpu(first_cpu);
+    if (first_paging_enabled_cpu) {
+        for (env = first_paging_enabled_cpu; env != NULL; env = env->next_cpu) {
+            ret = cpu_get_memory_mapping(list, env);
+            if (ret < 0) {
+                return -1;
+            }
+        }
+        return 0;
+    }
+
+    /*
+     * If the guest doesn't use paging, the virtual address is equal to physical
+     * address.
+     */
+    QTAILQ_FOREACH(block, &ram_list.blocks, next) {
+        offset = block->offset;
+        length = block->length;
+        create_new_memory_mapping(list, offset, offset, length);
+    }
+
+    return 0;
+}
+
+void qemu_get_guest_simple_memory_mapping(MemoryMappingList *list)
+{
+    RAMBlock *block;
+
+    QTAILQ_FOREACH(block, &ram_list.blocks, next) {
+        create_new_memory_mapping(list, block->offset, 0, block->length);
+    }
+}
+
+void memory_mapping_filter(MemoryMappingList *list, int64_t begin,
+                           int64_t length)
+{
+    MemoryMapping *cur, *next;
+
+    QTAILQ_FOREACH_SAFE(cur, &list->head, next, next) {
+        if (cur->phys_addr >= begin + length ||
+            cur->phys_addr + cur->length <= begin) {
+            QTAILQ_REMOVE(&list->head, cur, next);
+            list->num--;
+            continue;
+        }
+
+        if (cur->phys_addr < begin) {
+            cur->length -= begin - cur->phys_addr;
+            if (cur->virt_addr) {
+                cur->virt_addr += begin - cur->phys_addr;
+            }
+            cur->phys_addr = begin;
+        }
+
+        if (cur->phys_addr + cur->length > begin + length) {
+            cur->length -= cur->phys_addr + cur->length - begin - length;
+        }
+    }
+}