shm: The code of shared framebuffer is moved

The code of shared framebuffer is moved
from maru_vga.c into maru_shm.c

Signed-off-by: GiWoong Kim <giwoong.kim@samsung.com>

1 files changed, 61 insertions, 3 deletions

diff --git a/tizen/src/maru_shm.c b/tizen/src/maru_shm.c
index dc9e9619a9..7a1577b4db 100644
--- a/tizen/src/maru_shm.c
+++ b/tizen/src/maru_shm.c
@@ -1,7 +1,7 @@
 /*
  * Shared memory
  *
- * Copyright (C) 2011 - 2012 Samsung Electronics Co., Ltd. All rights reserved.
+ * Copyright (C) 2011 - 2013 Samsung Electronics Co., Ltd. All rights reserved.
  *
  * Contact:
  * GiWoong Kim <giwoong.kim@samsung.com>
@@ -32,12 +32,23 @@
 #include "emul_state.h"
 #include "debug_ch.h"
 
+#include <sys/types.h>
+#include <sys/ipc.h>
+#include <sys/shm.h>
+#include "maru_err_table.h"
+
 MULTI_DEBUG_CHANNEL(tizen, maru_shm);
 
 
+void *shared_memory = (void*) 0;
+int skin_shmid;
+
 void qemu_ds_shm_update(DisplayState *ds, int x, int y, int w, int h)
 {
-    //TODO:
+    if (shared_memory != NULL) {
+        memcpy(shared_memory, ds->surface->data,
+            ds->surface->linesize * ds->surface->height);
+    }
 }
 
 void qemu_ds_shm_resize(DisplayState *ds)
@@ -50,7 +61,8 @@ void qemu_ds_shm_refresh(DisplayState *ds)
     vga_hw_update();
 }
 
-void maruskin_shm_init(uint64 swt_handle, int lcd_size_width, int lcd_size_height, bool is_resize)
+void maruskin_shm_init(uint64 swt_handle,
+    int lcd_size_width, int lcd_size_height, bool is_resize)
 {
     INFO("maru shm initialization = %d\n", is_resize);
 
@@ -58,5 +70,51 @@ void maruskin_shm_init(uint64 swt_handle, int lcd_size_width, int lcd_size_heigh
         set_emul_lcd_size(lcd_size_width, lcd_size_height);
         set_emul_sdl_bpp(32);
     }
+
+    /* byte */
+    int shm_size =
+        get_emul_lcd_width() * get_emul_lcd_height() * 4;
+
+    /* base + 1 = sdb port */
+    /* base + 2 = shared memory key */
+    int mykey = get_emul_vm_base_port() + 2;
+
+    INFO("shared memory key: %d, vga ram_size : %d\n", mykey, shm_size);
+
+    /* make a shared framebuffer */
+    skin_shmid = shmget((key_t)mykey, (size_t)shm_size, 0666 | IPC_CREAT);
+    if (skin_shmid == -1) {
+        ERR("shmget failed\n");
+        perror("maru_vga: ");
+
+        maru_register_exit_msg(MARU_EXIT_UNKNOWN,
+            (char*) "Cannot launch this VM.\n"
+            "Shared memory is not enough.");
+        exit(0);
+    }
+
+    shared_memory = shmat(skin_shmid, (void*)0, 0);
+    if (shared_memory == (void *)-1) {
+        ERR("shmat failed\n");
+        perror("maru_vga: ");
+        exit(1);
+    }
+
+    /* default screen */
+    memset(shared_memory, 0x00, (size_t)shm_size);
+    printf("Memory attached at %X\n", (int)shared_memory);
+}
+
+void maruskin_shm_quit(void)
+{
+    if (shmdt(shared_memory) == -1) {
+        ERR("shmdt failed\n");
+        perror("maru_vga: ");
+    }
+
+    if (shmctl(skin_shmid, IPC_RMID, 0) == -1) {
+        ERR("shmctl failed\n");
+        perror("maru_vga: ");
+    }
 }