feat: Add /dev/quickstart to support synchronous communication between...

feat: Add /dev/quickstart to support synchronous communication between processes in user mode startup.

Add /dev/quickstart to support synchronous communication between processes in user mode startup.
Support ioctl cmd:
 QUICKSTART_LISTEN,QUICKSTART_STAGE1,QUICKSTART_STAGE2,QUICKSTART_STAGE3,QUICKSTART_UNREGISTER only for init process;
 QUICKSTART_NOTIFY for other app process.

Close #I3OHO5

Change-Id: If6a56123be93a5bc6b6d1069abda8d872b15fae1

Kconfig

@@ -303,6 +303,7 @@ source "../../kernel/liteos_a/bsd/dev/usb/Kconfig"
 source "../../drivers/adapter/khdf/liteos/Kconfig"
 
 source "drivers/char/mem/Kconfig"
+source "drivers/char/quickstart/Kconfig"
 source "drivers/char/random/Kconfig"
 source "../../drivers/liteos/tzdriver/Kconfig"
 source "drivers/char/video/Kconfig"

drivers/char/quickstart/Kconfig

+config DRIVERS_QUICKSTART
+    bool "Enable QUICKSTART"
+    default y
+    depends on DRIVERS && FS_VFS
+    help
+      Answer Y to enable LiteOS support quickstart frame dev.

drivers/char/quickstart/include/los_quick_start.h → drivers/char/quickstart/include/los_dev_quickstart.h

@@ -33,6 +33,7 @@
 #define __LOS_QUICK_START_H__
 
 #include "los_typedef.h"
+#include "sys/ioctl.h"
 
 #ifdef __cplusplus
 #if __cplusplus
@@ -40,7 +41,41 @@ extern "C" {
 #endif /* __cplusplus */
 #endif /* __cplusplus */
 
-extern int DevQuickStartRegister(void);
+typedef enum {
+    QS_STAGE1 = 1,   /* 1: start from stage1, 0 is already called in kernel process */
+    QS_STAGE2,       /* system init stage No 2 */
+    QS_STAGE3,       /* system init stage No 3 */
+    QS_STAGE_LIMIT
+} QS_STAGE;
+
+typedef enum {
+    QS_UNREGISTER = QS_STAGE_LIMIT,  /* quickstart dev unregister */
+    QS_NOTIFY,          /* quickstart notify */
+    QS_LISTEN,          /* quickstart listen */
+    QS_CTL_LIMIT
+} QS_CTL;
+
+#define QS_STAGE_CNT            (QS_STAGE_LIMIT - QS_STAGE1)
+
+#define QS_STAGE_NO(x)            QS_STAGE##x
+
+#define QUICKSTART_IOC_MAGIC    'T'
+#define QUICKSTART_UNREGISTER   _IO(QUICKSTART_IOC_MAGIC, QS_UNREGISTER)
+#define QUICKSTART_NOTIFY       _IO(QUICKSTART_IOC_MAGIC, QS_NOTIFY)
+#define QUICKSTART_LISTEN       _IO(QUICKSTART_IOC_MAGIC, QS_LISTEN)
+#define QUICKSTART_STAGE(x)     _IO(QUICKSTART_IOC_MAGIC, QS_STAGE_NO(x))
+
+#define QUICKSTART_NODE         "/dev/quickstart"
+
+typedef void (*SysteminitHook)(void);
+
+typedef struct {
+    SysteminitHook func[QS_STAGE_CNT];
+} LosSysteminitHook;
+
+extern void QuickStartHookRegister(LosSysteminitHook hooks);
+
+extern int QuickStartDevRegister(void);
 
 #ifdef __cplusplus
 #if __cplusplus

drivers/char/quickstart/include/los_quick_start_pri.h

-/*
- * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
- * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without modification,
- * are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this list of
- *    conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice, this list
- *    of conditions and the following disclaimer in the documentation and/or other materials
- *    provided with the distribution.
- *
- * 3. Neither the name of the copyright holder nor the names of its contributors may be used
- *    to endorse or promote products derived from this software without specific prior written
- *    permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
- * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef __LOS_QUICK_START_PRI_H__
-#define __LOS_QUICK_START_PRI_H__
-
-#include "los_typedef.h"
-
-#ifdef __cplusplus
-#if __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-#endif /* __cplusplus */
-
-unsigned int OsSystemInitStep2(void);
-extern VOID SystemInit2(VOID);
-
-#ifdef __cplusplus
-#if __cplusplus
-}
-#endif /* __cplusplus */
-#endif /* __cplusplus */
-
-#endif /* __LOS_QUICK_START_PRI_H__ */
\ No newline at end of file

drivers/char/quickstart/src/quickstart.c

@@ -29,16 +29,15 @@
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include "los_quick_start_pri.h"
-#include "bits/ioctl.h"
+#include "los_dev_quickstart.h"
 #include "fcntl.h"
 #include "linux/kernel.h"
+#include "los_process_pri.h"
 
-#define QUICKSTART_IOC_MAGIC    'T'
-#define QUICKSTART_INITSTEP2    _IO(QUICKSTART_IOC_MAGIC, 0)
-#define QUICKSTART_UNREGISTER   _IO(QUICKSTART_IOC_MAGIC, 1)
-#define QUICKSTART_NODE         "/dev/quickstart"
 
+EVENT_CB_S g_qsEvent;
+static SysteminitHook g_systemInitFunc[QS_STAGE_CNT] = {0};
+static char g_callOnce[QS_STAGE_CNT] = {0};
 
 static int QuickstartOpen(struct file *filep)
 {
@@ -50,18 +49,30 @@ static int QuickstartClose(struct file *filep)
     return 0;
 }
 
-static void SystemInitStep2(void)
+static void QuickstartNotify(unsigned int events)
 {
-    static int once = 0;
-    /* Only one call is allowed */
-    if (once != 0) {
-        return;
+    LOS_EventWrite((PEVENT_CB_S)&g_qsEvent, events);
+}
+
+static void QuickstartListen(unsigned int eventMask)
+{
+    LOS_EventRead((PEVENT_CB_S)&g_qsEvent, eventMask, LOS_WAITMODE_AND | LOS_WAITMODE_CLR, LOS_WAIT_FOREVER);
+}
+
+void QuickStartHookRegister(LosSysteminitHook hooks)
+{
+    for (int i = 0; i < QS_STAGE_CNT; i++) {
+        g_systemInitFunc[i] = hooks.func[i];
     }
-    once = 1;
+}
 
-    unsigned int ret = OsSystemInitStep2();
-    if (ret != LOS_OK) {
-        PRINT_ERR("systemInitStep2 failed\n");
+static void QuickStartStageWorking(unsigned int level)
+{
+    if ((level < QS_STAGE_CNT) && (g_callOnce[level] == 0) && (g_systemInitFunc[level] != NULL)) {
+        g_callOnce[level] = 1;    /* 1: Already called */
+        g_systemInitFunc[level]();
+    } else {
+        PRINT_WARN("Trigger quickstart,but doing nothing!!\n");
     }
 }
 
@@ -72,15 +83,27 @@ static int QuickstartDevUnregister(void)
 
 static ssize_t QuickstartIoctl(struct file *filep, int cmd, unsigned long arg)
 {
+    if (cmd == QUICKSTART_NOTIFY) {
+        QuickstartNotify(arg);
+        return 0;
+    }
+
+    if (OsGetUserInitProcessID() != LOS_GetCurrProcessID()) {
+        PRINT_ERR("Permission denios!\n");
+        return -1;
+    }
     switch (cmd) {
-        case QUICKSTART_INITSTEP2:
-            SystemInitStep2();
-            break;
         case QUICKSTART_UNREGISTER:
             QuickstartDevUnregister();
             break;
+        case QUICKSTART_LISTEN:
+            QuickstartListen(arg);
+            break;
+
+
 
         default:
+            QuickStartStageWorking(cmd - QUICKSTART_STAGE(1));  /* ioctl cmd converted to stage level */
             break;
     }
     return 0;
@@ -100,8 +123,9 @@ static const struct file_operations_vfs g_quickstartDevOps = {
     NULL,      /* unlink */
 };
 
-int DevQuickStartRegister(void)
+int QuickStartDevRegister(void)
 {
+    LOS_EventInit(&g_qsEvent);
     return register_driver(QUICKSTART_NODE, &g_quickstartDevOps, 0666, 0); /* 0666: file mode */
 }
 

kernel/common/los_config.c

@@ -117,10 +117,6 @@
 #include "los_hilog.h"
 #endif
 
-#ifdef LOSCFG_QUICK_START
-#include "los_quick_start_pri.h"
-#endif
-
 
 STATIC SystemRebootFunc g_rebootHook = NULL;
 
@@ -388,13 +384,6 @@ STATIC UINT32 OsSystemInitTaskCreate(VOID)
     return LOS_TaskCreate(&taskID, &sysTask);
 }
 
-#ifdef LOSCFG_QUICK_START
-UINT32 OsSystemInitStep2(VOID)
-{
-    SystemInit2();
-    return 0;
-}
-#endif
 
 UINT32 OsSystemInit(VOID)
 {

tools/build/mk/los_config.mk

@@ -398,10 +398,10 @@ ifeq ($(LOSCFG_DRIVERS_MEM), y)
     LITEOS_DEV_MEM_INCLUDE = -I $(LITEOSTOPDIR)/drivers/char/mem/include
 endif
 
-ifeq ($(LOSCFG_QUICK_START), y)
+ifeq ($(LOSCFG_DRIVERS_QUICKSTART), y)
     LITEOS_BASELIB += -lquickstart
     LIB_SUBDIRS       += $(LITEOSTOPDIR)/drivers/char/quickstart
-    LITEOS_QUICK_START_INCLUDE = -I $(LITEOSTOPDIR)/drivers/char/quickstart/include
+    LITEOS_DEV_QUICKSTART_INCLUDE = -I $(LITEOSTOPDIR)/drivers/char/quickstart/include
 endif
 
 ifeq ($(LOSCFG_DRIVERS_RANDOM), y)
@@ -642,7 +642,7 @@ LITEOS_DRIVERS_INCLUDE     := $(LITEOS_CELLWISE_INCLUDE)   $(LITEOS_GPIO_INCLUDE
                               $(LITEOS_REGULATOR_INCLUDE)  $(LITEOS_VIDEO_INCLUDE) \
                               $(LITEOS_DRIVERS_HDF_INCLUDE) $(LITEOS_TZDRIVER_INCLUDE) \
                               $(LITEOS_HIEVENT_INCLUDE)    $(LITEOS_DEV_MEM_INCLUDE) \
-                              $(LITEOS_QUICK_START_INCLUDE)
+                              $(LITEOS_DEV_QUICKSTART_INCLUDE)
 LITEOS_DFX_INCLUDE    := $(LITEOS_HILOG_INCLUDE)
 
 LITEOS_SECURITY_INCLUDE    := $(LITEOS_SECURITY_CAP_INC) $(LITEOS_SECURITY_VID_INC)