static int __usb_read_fifo(void *buffer, unsigned int buffer_size)
{
u32 old_ep_idx = 0;
u32 fifo = 0;
u32 transfered = 0;
u32 left = 0;
u32 this_len;
old_ep_idx = USBC_GetActiveEp(sunxi_udc_source.usbc_hd);
USBC_SelectActiveEp(sunxi_udc_source.usbc_hd, SUNXI_USB_BULK_OUT_EP_INDEX); //选择当前EP
fifo = USBC_SelectFIFO(sunxi_udc_source.usbc_hd, SUNXI_USB_BULK_OUT_EP_INDEX); //选择fifo
left = buffer_size;
if(left)
{
while(left)
{
if(USBC_Dev_IsReadDataReady(sunxi_udc_source.usbc_hd, USBC_EP_TYPE_RX))
{
this_len = USBC_ReadLenFromFifo(sunxi_udc_source.usbc_hd, USBC_EP_TYPE_RX);
this_len = USBC_ReadPacket(sunxi_udc_source.usbc_hd, fifo, this_len, buffer + transfered);
transfered += this_len;
left -= this_len;
__usb_readcomplete(sunxi_udc_source.usbc_hd, USBC_EP_TYPE_RX, 1); //返回状态
}
}
USBC_INT_ClearEpPending(sunxi_udc_source.usbc_hd, USBC_EP_TYPE_RX, SUNXI_USB_BULK_OUT_EP_INDEX);
}
else
{
if(USBC_Dev_IsReadDataReady(sunxi_udc_source.usbc_hd, USBC_EP_TYPE_RX))
{
this_len = USBC_ReadLenFromFifo(sunxi_udc_source.usbc_hd, USBC_EP_TYPE_RX);
this_len = USBC_ReadPacket(sunxi_udc_source.usbc_hd, fifo, this_len, buffer);
transfered = this_len;
__usb_readcomplete(sunxi_udc_source.usbc_hd, USBC_EP_TYPE_RX, 1); //返回状态
}
else
{
sunxi_usb_dbg("sunxi usb rxdata not ready\n");
}
}
USBC_SelectActiveEp(sunxi_udc_source.usbc_hd, old_ep_idx);
sunxi_usb_dbg("read bytes 0x%x\n", transfered);
return transfered;
}
/*
************************************************************************************************************
*
* function
*
* name :
*
* parmeters :
*
* return :
*
* note :
*
*
************************************************************************************************************
*/
static void __usb_recv_by_dma_isr(void *p_arg)
{
u32 old_ep_idx;
old_ep_idx = USBC_GetActiveEp(sunxi_udc_source.usbc_hd);
USBC_SelectActiveEp(sunxi_udc_source.usbc_hd, SUNXI_USB_BULK_OUT_EP_INDEX); //选择RXEP
//选择使用IO方式搬运数据
sunxi_usb_dbg("select io mode to transfer data\n");
USBC_Dev_ClearEpDma(sunxi_udc_source.usbc_hd, USBC_EP_TYPE_RX);
if(usb_dma_trans_unaliged_bytes)
{
uint fifo, this_len;
this_len = USBC_ReadLenFromFifo(sunxi_udc_source.usbc_hd, USBC_EP_TYPE_RX);
fifo = USBC_SelectFIFO(sunxi_udc_source.usbc_hd, SUNXI_USB_BULK_OUT_EP_INDEX);
USBC_ReadPacket(sunxi_udc_source.usbc_hd, fifo, this_len, usb_dma_trans_unaligned_buf);
__usb_readcomplete(sunxi_udc_source.usbc_hd, USBC_EP_TYPE_RX, 1); //返回状态
usb_dma_trans_unaliged_bytes = 0;
}
//如果当前dma传输的不是完整包，则需要手动清除中断
if(sunxi_ubuf.request_size % sunxi_udc_source.bulk_ep_max)
{
USBC_Dev_ReadDataStatus(sunxi_udc_source.usbc_hd, USBC_EP_TYPE_RX, 1);
//printf("clear rx pending manually\n");
}
USBC_SelectActiveEp(sunxi_udc_source.usbc_hd, old_ep_idx);
sunxi_udev_active->dma_rx_isr(p_arg);
}
/*
*******************************************************************************
* __usb_read_ep0_data
*
* Description:
* void
*
* Parameters:
* void
*
* Return value:
* void
*
* note:
* void
*
*******************************************************************************
*/
static int __usb_read_ep0_data(void *buffer, uint data_type)
{
u32 fifo_count = 0;
u32 fifo = 0;
int ret = 0;
u32 old_ep_index = 0;
old_ep_index = USBC_GetActiveEp(sunxi_udc_source.usbc_hd);
fifo = USBC_SelectFIFO(sunxi_udc_source.usbc_hd, SUNXI_USB_CTRL_EP_INDEX);
fifo_count = USBC_ReadLenFromFifo(sunxi_udc_source.usbc_hd, USBC_EP_TYPE_EP0);
if(!data_type)
{
if(fifo_count != 8 )
{
printf("err: ep0 fifo_count %d is not 8\n", fifo_count);
return -1;
}
}
USBC_ReadPacket(sunxi_udc_source.usbc_hd, fifo, fifo_count, (void *)buffer);
__usb_readcomplete(sunxi_udc_source.usbc_hd, USBC_EP_TYPE_EP0, 1);
USBC_SelectActiveEp(sunxi_udc_source.usbc_hd, old_ep_index);
return ret;
}
/*
************************************************************************************************************
*
* function
*
* name :
*
* parmeters :
*
* return :
*
* note :
*
*
************************************************************************************************************
*/
static int eprx_recv_op(void)
{
uint old_ep_index;
uint this_len;
uint fifo;
old_ep_index = USBC_GetActiveEp(sunxi_udc_source.usbc_hd);
USBC_SelectActiveEp(sunxi_udc_source.usbc_hd, SUNXI_USB_BULK_OUT_EP_INDEX);
if (USBC_Dev_IsEpStall(sunxi_udc_source.usbc_hd, USBC_EP_TYPE_RX))
{
USBC_Dev_EpClearStall(sunxi_udc_source.usbc_hd, USBC_EP_TYPE_RX);
printf("sunxi ubs read error: usb rx ep is busy already\n");
}
else
{
if(USBC_Dev_IsReadDataReady(sunxi_udc_source.usbc_hd, USBC_EP_TYPE_RX))
{
this_len = USBC_ReadLenFromFifo(sunxi_udc_source.usbc_hd, USBC_EP_TYPE_RX);
if(fastboot_data_flag == 1)
{
fifo = USBC_SelectFIFO(sunxi_udc_source.usbc_hd, SUNXI_USB_BULK_OUT_EP_INDEX);
sunxi_ubuf.rx_req_length = USBC_ReadPacket(sunxi_udc_source.usbc_hd, fifo, this_len, sunxi_ubuf.rx_req_buffer);
sunxi_ubuf.rx_req_buffer += this_len;
sunxi_usb_dbg("special read ep bytes 0x%x\n", sunxi_ubuf.rx_req_length);
__usb_readcomplete(sunxi_udc_source.usbc_hd, USBC_EP_TYPE_RX, 1); //返回状态
}
else if(!sunxi_ubuf.rx_ready_for_data)
{
fifo = USBC_SelectFIFO(sunxi_udc_source.usbc_hd, SUNXI_USB_BULK_OUT_EP_INDEX);
memset(sunxi_ubuf.rx_req_buffer, 0, 64);
sunxi_ubuf.rx_req_length = USBC_ReadPacket(sunxi_udc_source.usbc_hd, fifo, this_len, sunxi_ubuf.rx_req_buffer);
sunxi_ubuf.rx_ready_for_data = 1;
sunxi_usb_dbg("read ep bytes 0x%x\n", sunxi_ubuf.rx_req_length);
__usb_readcomplete(sunxi_udc_source.usbc_hd, USBC_EP_TYPE_RX, 1); //返回状态
}
else
{
sunxi_usb_dbg("eprx do nothing and left it to dma\n");
}
}
else
{
sunxi_usb_dbg("sunxi usb rxdata not ready\n");
}
}
USBC_SelectActiveEp(sunxi_udc_source.usbc_hd, old_ep_index);
return 0;
}
/*
*******************************************************************************
* read_request
*
* Description:
* void
*
* Parameters:
* void
*
* Return value:
* void
*
* note:
* void
*
*******************************************************************************
*/
static int read_request(struct usb_device_request *req)
{
u32 fifo_count = 0;
u32 fifo = 0;
int ret = FASTBOOT_OK;
u8 old_ep_index = 0;
old_ep_index = USBC_GetActiveEp(udc.bsp);
USBC_SelectActiveEp(udc.bsp, CTRL_EP_INDEX);
fifo = USBC_SelectFIFO(udc.bsp, CTRL_EP_INDEX);
fifo_count = USBC_ReadLenFromFifo(udc.bsp, USBC_EP_TYPE_EP0);
if(fifo_count != 8 ){
DMSG_PANIC("err: ep0 fifo_count is not 8\n", fifo_count);
return FASTBOOT_ERROR;
}
USBC_ReadPacket(udc.bsp, fifo, fifo_count, (void *)req);
ReadDataStatusComplete(udc.bsp, USBC_EP_TYPE_EP0, 0);
USBC_SelectActiveEp(udc.bsp, old_ep_index);
return ret;
}