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@@ -44,8 +44,8 @@
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#define MSC_DRV_NAME "Mass Storage Class"
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#define MSC_DRV_AUTHOR "Host Driver Author"
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-static struct usb_host_func_drv mscDrv; /* */
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-static __u32 mscDev_id_array; /* ��¼��mscDev�ı�� */
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+static struct usb_host_func_drv mscDrv; /* 存储USB Mass Storage设备驱动 */
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+static __u32 mscDev_id_array; /* 记录已连接的mscDev的id值 */
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static struct usb_drv_dev_match_table msc_match_table [] =
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{
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@@ -255,16 +255,16 @@ static struct usb_drv_dev_match_table msc_match_table [] =
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* get_mscDev_id
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*
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* Description:
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-* ���²�����豸����ID
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+* 获取USB Mass Storage设备的ID
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*
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* Parameters:
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* void
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*
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* Return value:
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-* ���ط����ID
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+* 返回设备的ID
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*
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* note:
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-* ��
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+* 无
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*
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*******************************************************************************
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*/
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@@ -288,17 +288,17 @@ static unsigned int get_mscDev_id(void)
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* free_mscDev_id
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*
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* Description:
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-* �ͷŷ����ID
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+* 释放USB Mass Storage设备的ID
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*
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* Parameters:
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-* bit : input. mscDev��ID��
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+* bit : input. mscDev的ID号
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*
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* Return value:
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-* 0 ���ɹ�
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-* !0 ��ʧ��
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+* 0 成功
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+* !0 失败
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*
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* note:
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-* ��
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+* 无
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*
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*******************************************************************************
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*/
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@@ -306,15 +306,16 @@ static int free_mscDev_id(unsigned int bit)
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{
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if (usb_test_bit(bit, (volatile uint32_t *)&mscDev_id_array) == 0)
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{
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- hal_log_err("ERR: free_host_id: invalid bit(%d)", bit);
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+ hal_log_err("ERR: free_mscDev_id: invalid bit(%d)", bit);
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return -1;
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}
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- /* ���ո�λ */
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+ /* 释放占用位 */
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usb_clear_bit(bit, (volatile uint32_t *)&mscDev_id_array);
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return 0;
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}
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+
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/*
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*******************************************************************************
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* mscDevInit
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@@ -323,18 +324,19 @@ static int free_mscDev_id(unsigned int bit)
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*
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*
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* Parameters:
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-* mscDev �� input. msc�豸��Ϣ
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-* intf : input. USB�ӿ�
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+* mscDev : input. msc设备信息
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+* intf : input. USB接口
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*
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* Return value:
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-* 0 ���ɹ�
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-* !0 ��ʧ��
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+* 0 成功
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+* !0 失败
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*
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* note:
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-* ��
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+* 无
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*
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*******************************************************************************
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*/
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+
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static int mscDevInit(__mscDev_t *mscDev, struct usb_interface *intf)
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{
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int ret = 0;
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@@ -369,7 +371,7 @@ static int mscDevInit(__mscDev_t *mscDev, struct usb_interface *intf)
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return USB_ERR_ALLOC_URB_FAILED;
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}
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- /* һ��Կ�� */
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+ /* 一次性锁 */
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mscDev->scan_lock = hal_sem_create(1);
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if (mscDev->scan_lock == NULL)
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@@ -388,7 +390,7 @@ static int mscDevInit(__mscDev_t *mscDev, struct usb_interface *intf)
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goto error1;
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}
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- /* �߳�ͬ�� */
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+ /* 线程同步 */
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mscDev->ThreadSemi = hal_sem_create(0);
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if (mscDev->ThreadSemi == NULL)
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@@ -463,13 +465,13 @@ error0:
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*
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*
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* Parameters:
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-* mscDev �� input. msc�豸��Ϣ
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+* mscDev -- input. msc设备信息
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*
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* Return value:
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-* ��
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+* none
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*
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* note:
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-* ��
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+* none
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*
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*******************************************************************************
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*/
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@@ -529,10 +531,10 @@ static void mscDevFree(__mscDev_t *mscDev)
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*
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*
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* Return value:
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-* ��
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+* none
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*
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* note:
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-* ��
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+* none
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*
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*******************************************************************************
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*/
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@@ -555,10 +557,10 @@ static void SetMscDevState(__mscDev_t *mscDev, mscDev_state_t state)
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*
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*
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* Return value:
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-* ��/��
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+* none/error
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*
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* note:
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-* ��
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+* none
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*
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*******************************************************************************
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*/
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@@ -578,10 +580,10 @@ unsigned int mscDevOnline(__mscDev_t *mscDev)
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*
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*
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* Return value:
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-* ��
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+* void
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*
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* note:
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-* ��
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+* none
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*
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*******************************************************************************
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*/
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@@ -598,17 +600,17 @@ static void GetDeviceInfo(__mscDev_t *mscDev, unsigned int index)
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* GetTransport
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*
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* Description:
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-* ���msc�豸�Ĵ��䷽ʽ
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+* 获取msc设备的传输方式
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*
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* Parameters:
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-* mscDev �� input. msc�豸��Ϣ
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+* mscDev 获取 input.msc设备信息
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*
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* Return value:
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-* 0 ���ɹ�
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-* !0 ��ʧ��
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+* 0 成功
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+* !0 失败
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*
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* note:
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-* ��
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+* none
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*
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*******************************************************************************
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*/
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@@ -638,20 +640,20 @@ static int GetTransport(__mscDev_t *mscDev)
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/*
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*******************************************************************************
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-* GetTransport
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+* GetProtocol
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*
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* Description:
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-* ���msc�豸�Ĵ��䷽ʽ
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+* 获取msc设备的传输方式
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*
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* Parameters:
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-* mscDev �� input. msc�豸��Ϣ
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+* mscDev 获取 input.msc设备信息
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*
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* Return value:
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-* 0 ���ɹ�
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-* !0 ��ʧ��
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+* 0 成功
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+* !0 失败
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*
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* note:
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-* ��
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+* none
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*
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*******************************************************************************
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*/
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@@ -702,20 +704,21 @@ static int GetProtocol(__mscDev_t *mscDev)
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* CreatePipes
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*
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* Description:
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-* ��������ܵ�
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+* 创建管道函数
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*
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* Parameters:
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-* mscDev �� input. msc�豸��Ϣ
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+* mscDev 获取 input.msc设备信息
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*
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* Return value:
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-* 0 ���ɹ�
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-* !0 ��ʧ��
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+* 0 成功
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+* !0 失败
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*
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* note:
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-* ��
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+* none
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*
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*******************************************************************************
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*/
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+
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static int CreatePipes(__mscDev_t *mscDev)
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{
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struct usb_host_virt_interface *altsetting = mscDev->pusb_intf->cur_altsetting;
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@@ -786,16 +789,16 @@ static int CreatePipes(__mscDev_t *mscDev)
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* mscDevAdd
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*
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* Description:
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-*
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+* 添加msc设备
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*
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* Parameters:
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-* mscDev �� input. msc�豸��Ϣ
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+* mscDev : input. msc设备信息
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*
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* Return value:
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-* ��
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+* None
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*
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* note:
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-* ��
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+* 无
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*
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*******************************************************************************
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*/
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@@ -827,7 +830,7 @@ static void mscDevAdd(__mscDev_t *mscDev)
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mscLun->mscDev = mscDev;
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mscLun->LunNo = i;
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mscLun->DiskSubClass = mscDev->SubClass;
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- mscLun->RemoveAble = 1; /* Ĭ�Ͼ��ǿ��ƶ��豸 */
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+ mscLun->RemoveAble = 1; /* 默认为可移动设备 */
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mscDev->Lun[i] = mscLun;
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hal_log_info("begin mscLunAdd\n");
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ret = mscLunAdd(mscLun);
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@@ -839,7 +842,7 @@ static void mscDevAdd(__mscDev_t *mscDev)
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continue;
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}
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- /* ����豸�Ƿ��ƶ��豸, ��delay */
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+ /* 判断设备是否可移动设备, 若不是则delay */
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if (mscLun->RemoveAble == 0)
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{
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mscDev->SuspendTime = 10000; /* 10s */
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@@ -863,13 +866,13 @@ static void mscDevAdd(__mscDev_t *mscDev)
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*
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*
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* Parameters:
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-* mscDev �� input. msc�豸��Ϣ
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+* mscDev : input. msc设备信息
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*
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* Return value:
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-* ��
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+* 无
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*
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* note:
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-* ��
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+* 无
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*
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*******************************************************************************
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*/
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@@ -908,19 +911,20 @@ static void mscDevDel(__mscDev_t *mscDev)
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* MediaChangeThread
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*
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* Description:
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-* ���ʼ���߳�
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+* 媒体变化线程
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*
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* Parameters:
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-* p_arg �� input. ��mscDev, msc�豸��Ϣ
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+* p_arg : input. 为mscDev, msc设备信息
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*
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* Return value:
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-* ��
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+* 无
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*
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* note:
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-* ��
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+* 无
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*
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*******************************************************************************
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*/
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+
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static void MediaChangeThread(void *p_arg)
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{
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__mscDev_t *mscDev = (__mscDev_t *)p_arg;
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@@ -928,7 +932,7 @@ static void MediaChangeThread(void *p_arg)
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while (1)
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{
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unsigned int i = 0;
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- //--<1>--ɱ���߳�
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+ //--<1>--销毁线程
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//TryTo//KillThreadSelf("MediaChangeThread");
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for (i = 0; i < mscDev->MaxLun; i++)
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@@ -958,16 +962,16 @@ static void MediaChangeThread(void *p_arg)
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* mscDevScanThread
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*
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* Description:
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-* mscDevɨ��
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+* mscDev扫描
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*
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* Parameters:
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-* p_arg �� input. ��mscDev, msc�豸��Ϣ
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+* p_arg : input. 指向mscDev, msc设备信息
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*
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* Return value:
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-* ��
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+* 无
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*
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* note:
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-* ��
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+* 无
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*
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*******************************************************************************
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*/
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@@ -985,18 +989,18 @@ static void mscDevScanThread(void *p_arg)
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* QueueCmnd
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*
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* Description:
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-* �������Lun
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+* 将命令队列提交到Lun
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*
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* Parameters:
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-* mscLun �� input. �����Ӧ��Lun
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-* scsi_cmnd : input. ����
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+* mscLun ： input. 对应的Lun
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+* scsi_cmnd : input. 命令
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*
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* Return value:
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-* 0 ���ɹ�
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-* !0 ��ʧ��
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+* 0 成功
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+* !0 失败
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*
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* note:
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-* ��
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+* 无
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*
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*******************************************************************************
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*/
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@@ -1056,18 +1060,18 @@ int mscDevQueueCmnd(__mscLun_t *mscLun, __ScsiCmnd_t *ScsiCmnd)
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* mscCmndDone
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*
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* Description:
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-* ���������ȥ���ط��������
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+* 处理命令完成后的回调函数
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*
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* Parameters:
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-* mscLun �� input. �����Ӧ��Lun
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-* scsi_cmnd : input. ����
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-* TransStatus : input. ����״̬
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+* mscLun ： input. 对应的Lun
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+* scsi_cmnd : input. 命令
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+* TransStatus : input. 数据传输状态
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*
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* Return value:
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-* ��
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+* 无
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*
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* note:
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-* ��
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+* 无
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*
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*******************************************************************************
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*/
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@@ -1105,7 +1109,7 @@ static void mscCmndDone(__mscDev_t *mscDev, __ScsiCmnd_t *ScsiCmnd, int TransSta
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{
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hal_log_err("ERR: ScsiCmnd(%x) retry %d times, maybe device is died",
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((__u8 *)(ScsiCmnd->cmnd.CommandBlock))[0], ScsiCmnd->retries);
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- /* ��ʹ����ִ�ж��ʧ��Ҳ������Ϊ�豸����, ��Ϊ�豸���ܲ�֧��������� */
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+ /* 不要使用异步执行操作，因为设备可能不支持并且可能会导致失败 */
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}
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}
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else
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@@ -1132,16 +1136,16 @@ static void mscCmndDone(__mscDev_t *mscDev, __ScsiCmnd_t *ScsiCmnd, int TransSta
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* mscMainThread
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*
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* Description:
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-* ���̣߳��������Ĵ���
|
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|
+* 线程函数，控制整个系统运行。
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|
|
*
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|
* Parameters:
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|
-* p_arg �� input. ��mscDev, msc�豸��Ϣ
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|
+* p_arg -- input. 对象指针，mscDev, msc设备信息。
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|
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*
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|
|
* Return value:
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-* ��
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+* 无
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|
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*
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|
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* note:
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-* ��
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+* 无
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*
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*******************************************************************************
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*/
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@@ -1155,17 +1159,17 @@ static void mscMainThread(void *p_arg)
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while (1)
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{
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- //--<1>--ɱ���߳�
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+ //--<1>--线程退出
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//TryTo//KillThreadSelf("mscMainThread");
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/* sleep */
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//UsbThreadSleep(mscDev->ThreadSemi);
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// kthread_stop(mscDev->MainThreadId);
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hal_sem_wait(mscDev->ThreadSemi);
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/* cmd_list is empty?
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- * mscDevQueueCmnd��cmd�ӵ�cmd_list���պ�����mscMainThread�������������
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- * forѭ����cmd_list���վͻ�ȥִ����һ�����ִ����Ϻ�cmd_list���ˡ�
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- * ��ʱUsbThreadWakeUp����mscMainThread������cmd_list�Ѿ����ˡ�
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- */
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+ * 如果mscDevQueueCmnd的cmd加入了cmd_list队列就会唤醒mscMainThread线程去执行，
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+ * for循环从cmd_list取出一个cmd执行完再继续取下一个。
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+ * 所以UsbThreadWakeUp函数用于将mscMainThread线程唤醒，去执行已经加入到cmd_list的cmd。
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+ */
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if (usb_list_empty(&(mscDev->cmd_list)))
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{
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hal_log_err("Wrn: mscDev cmd_list is empty");
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@@ -1209,18 +1213,18 @@ static void mscMainThread(void *p_arg)
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* mscDevProbe
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*
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* Description:
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-* ��������ܵ�
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+* 设备探测函数
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*
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* Parameters:
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-* intf �� input. USB�ӿ���Ϣ
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-* table_item : input. ƥ���
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+* intf ： input. USB接口信息
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+* table_item : input. 匹配项
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*
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* Return value:
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-* 0 ���ɹ�
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-* !0 ��ʧ��
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+* 0 成功
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+* !0 失败
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*
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* note:
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-* ��
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+* 备注
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*
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*******************************************************************************
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*/
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@@ -1240,9 +1244,9 @@ static int32_t mscDevProbe(struct usb_interface *intf, const struct usb_drv_dev_
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}
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//----------------------------------------------------------------
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- // ��ʼ��mscDev
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+ // 初始化mscDev
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//----------------------------------------------------------------
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- /* ��ʼ��һ��mscDev */
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+ /* 初始化一个mscDev */
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mscDev = (__mscDev_t *)hal_malloc(sizeof(__mscDev_t));
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if (mscDev == NULL)
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@@ -1263,7 +1267,7 @@ static int32_t mscDevProbe(struct usb_interface *intf, const struct usb_drv_dev_
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}
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GetDeviceInfo(mscDev, match_table_index);
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- /* ���SubClass */
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+ /* 获取 SubClass */
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ret = GetProtocol(mscDev);
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if (ret != USB_ERR_SUCCESS)
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@@ -1273,7 +1277,7 @@ static int32_t mscDevProbe(struct usb_interface *intf, const struct usb_drv_dev_
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goto error2;
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}
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- /* ���Transport */
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+ /* 获取 Transport */
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ret = GetTransport(mscDev);
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if (ret != USB_ERR_SUCCESS)
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@@ -1283,7 +1287,7 @@ static int32_t mscDevProbe(struct usb_interface *intf, const struct usb_drv_dev_
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goto error3;
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}
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- /* ��������ܵ� */
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+ /* 创建管道 */
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ret = CreatePipes(mscDev);
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if (ret != USB_ERR_SUCCESS)
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{
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@@ -1292,11 +1296,12 @@ static int32_t mscDevProbe(struct usb_interface *intf, const struct usb_drv_dev_
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goto error4;
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}
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+
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//----------------------------------------------------------------
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- // ʶ��mscDev
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+ //识别mscDev
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//----------------------------------------------------------------
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SetMscDevState(mscDev, MSC_DEV_ONLINE);
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- /* ���MaxLun */
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+ /* 获取MaxLun */
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mscDev->MaxLun = mscGetMaxLun(mscDev) + 1;
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if (mscDev->MaxLun > MSC_MAX_LUN)
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@@ -1368,17 +1373,17 @@ error0:
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* mscDevSuspend
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*
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* Description:
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-* �����豸
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+* 挂起设备
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*
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* Parameters:
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-* intf �� input. USB�ӿ���Ϣ
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+* intf ： input. USB接口信息
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*
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* Return value:
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-* 0 ���ɹ�
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-* !0 ��ʧ��
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+* 0 成功
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+* !0 失败
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*
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* note:
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-* ��
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+* 无
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*
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*******************************************************************************
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*/
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@@ -1413,17 +1418,17 @@ static int32_t mscDevSuspend(struct usb_interface *intf)
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* mscDevRemove
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*
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* Description:
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-* msc�豸�Ƴ�
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+* msc设备移除
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*
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* Parameters:
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-* intf �� input. USB�ӿ���Ϣ
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+* intf ： input. USB接口信息
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*
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* Return value:
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-* 0 ���ɹ�
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-* !0 ��ʧ��
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+* 0 成功
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+* !0 失败
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*
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* note:
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-* ��
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+* 无
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*
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*******************************************************************************
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*/
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@@ -1447,9 +1452,9 @@ static void mscDevRemove(struct usb_interface *intf)
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SetMscDevState(mscDev, MSC_DEV_OFFLINE);
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hal_log_info("mscDevRemove: SetMscDevState MSC_DEV_OFFLINE");
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- /* ֹͣ��ǰ���� */
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+ /* 停止当前传输 */
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mscDev->StopTransport(mscDev);
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- /* �Ͽ�mscDev��������е�Lun */
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+ /* 断开mscDev与所有Lun的关联 */
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mscDevDel(mscDev);
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/* kill media change thrad */
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kthread_stop(mscDev->MediaChangeId);
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@@ -1461,7 +1466,7 @@ static void mscDevRemove(struct usb_interface *intf)
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hal_sem_delete(mscDev->ThreadSemi);
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mscDev->ThreadSemi = NULL;
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}
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- /* �ͷ�mscDev��Դ */
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+ /* 释放mscDev资源 */
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mscDevFree(mscDev);
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hal_free(mscDev);
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hal_log_info("mscDevRemove complete");
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@@ -1473,17 +1478,17 @@ static void mscDevRemove(struct usb_interface *intf)
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* mscDrv_init
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*
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* Description:
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-* msc������ʼ��
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+* msc驱动初始化
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*
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* Parameters:
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-* drv �� input. msc����
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+* drv 为input.msc驱动
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*
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* Return value:
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-* 0 ���ɹ�
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-* !0 ��ʧ��
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+* 0 成功
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+* !0 失败
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*
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* note:
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-* ��
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+*
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*
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*******************************************************************************
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*/
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@@ -1511,16 +1516,16 @@ static int mscDrvInit(struct usb_host_func_drv *drv)
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* scsi_bus_drv_reg
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*
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* Description:
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-* ��scsi����ע������
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+* SCSI总线驱动注册函数
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*
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* Parameters:
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-* drv : input. ����
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+* drv : input. 驱动
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*
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* Return value:
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* EPDK_OK / EPDK_FAIL
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*
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* note:
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-* ��
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+* 无
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*
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*******************************************************************************
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*/
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@@ -1532,7 +1537,7 @@ int mscInit(void)
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mscDev_id_array = 0;
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init_usbh_buff_manager();
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usbh_disk_time_init();
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- /* ���ݿͻ�������Ҫ��ӳdisk��״̬, ������ǹ���disk��״̬ */
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+ /* 数据库客户端需要映射disk状态, 这就是针对disk状态 */
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usbh_disk_info_reg();
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if (mscDrvInit(&mscDrv) != 0)
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@@ -1555,16 +1560,16 @@ int mscInit(void)
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* scsi_bus_drv_reg
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*
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* Description:
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-* ��scsi����ע������
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+* SCSI总线驱动注册
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*
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* Parameters:
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-* drv : input. ����
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+* drv : input. 驱动
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*
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* Return value:
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* EPDK_OK / EPDK_FAIL
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*
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* note:
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-* ��
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+* 无
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*
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*******************************************************************************
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*/
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sion