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add dma guard

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This commit is contained in:
hathach 2018-03-15 17:09:55 +07:00
parent b0ec6124e0
commit 87a2c935df
1 changed files with 66 additions and 36 deletions
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102
hw/mcu/nordic/nrf52/tusb_port/dcd_nrf52.c
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@ -62,7 +62,7 @@ static struct
uint8_t dir;
}control;
bool dma_running;
volatile bool dma_running;
}_dcd_data;
/*------------------------------------------------------------------*/
@ -142,7 +142,7 @@ static void power_usb_event_handler(nrf_drv_power_usb_evt_t event)
// Enable interrupt
NRF_USBD->INTENSET = USBD_INTEN_USBRESET_Msk | USBD_INTEN_USBEVENT_Msk | USBD_INTEN_ACCESSFAULT_Msk |
USBD_INTEN_EP0SETUP_Msk | USBD_INTEN_EP0DATADONE_Msk |
/*USBD_INTEN_ENDEPIN0_Msk |*/ USBD_INTEN_ENDEPOUT0_Msk |
USBD_INTEN_ENDEPIN0_Msk | USBD_INTEN_ENDEPOUT0_Msk |
/*USBD_INTEN_STARTED_Msk |*/ USBD_INTEN_EPDATA_Msk ;
//USBD_INTEN_SOF_Msk
@ -181,6 +181,23 @@ static void power_usb_event_handler(nrf_drv_power_usb_evt_t event)
}
}
void bus_reset(void)
{
for(int i=0; i<8; i++)
{
NRF_USBD->TASKS_STARTEPIN[i] = 0;
NRF_USBD->TASKS_STARTEPOUT[i] = 0;
}
NRF_USBD->TASKS_STARTISOIN = 0;
NRF_USBD->TASKS_STARTISOOUT = 0;
varclr(&_dcd_data);
}
/*------------------------------------------------------------------*/
/* Controller API
*------------------------------------------------------------------*/
bool tusb_dcd_init (uint8_t port)
{
// USB Power detection
@ -212,6 +229,26 @@ void tusb_dcd_set_config (uint8_t port, uint8_t config_num)
/*------------------------------------------------------------------*/
/* Control
*------------------------------------------------------------------*/
static void edpt_dma_start(uint8_t epnum, uint8_t dir)
{
// Only one dma could be active
while ( _dcd_data.dma_running ) { }
_dcd_data.dma_running = true;
if ( dir == TUSB_DIR_OUT )
{
NRF_USBD->TASKS_STARTEPOUT[epnum] = 1;
} else
{
NRF_USBD->TASKS_STARTEPIN[epnum] = 1;
}
}
static void edpt_dma_end(void)
{
_dcd_data.dma_running = false;
}
static void control_xact_start(void)
{
@ -230,31 +267,30 @@ static void control_xact_start(void)
NRF_USBD->EPIN[0].PTR = (uint32_t) _dcd_data.control.buffer;
NRF_USBD->EPIN[0].MAXCNT = xact_len;
NRF_USBD->TASKS_STARTEPIN[0] = 1;
edpt_dma_start(0, TUSB_DIR_IN);
}
_dcd_data.control.buffer += xact_len;
_dcd_data.control.xfer_len -= xact_len;
}
static void control_xact_done(void)
{
if ( _dcd_data.control.xfer_len > 0 )
{
if ( _dcd_data.control.dir == TUSB_DIR_OUT )
{
// out control need to wait for END EPOUT event before updating Pointer
NRF_USBD->TASKS_STARTEPOUT[0] = 1;
}else
{
control_xact_start();
}
}else
{
tusb_dcd_xfer_complete(0, 0, 0, true);
}
}
//static void control_xact_done(void)
//{
// if ( _dcd_data.control.xfer_len > 0 )
// {
// if ( _dcd_data.control.dir == TUSB_DIR_OUT )
// {
// // out control need to wait for END EPOUT event before updating Pointer
// edpt_dma_start(0, TUSB_DIR_OUT);
// }else
// {
// control_xact_start();
// }
// }else
// {
// tusb_dcd_xfer_complete(0, 0, 0, true);
// }
//}
bool tusb_dcd_control_xfer (uint8_t port, tusb_dir_t dir, uint8_t * buffer, uint16_t length, bool int_on_complete)
@ -322,20 +358,6 @@ bool tusb_dcd_edpt_busy (uint8_t port, uint8_t edpt_addr)
/*------------------------------------------------------------------*/
/*
*------------------------------------------------------------------*/
void bus_reset(void)
{
for(int i=0; i<8; i++)
{
NRF_USBD->TASKS_STARTEPIN[i] = 0;
NRF_USBD->TASKS_STARTEPOUT[i] = 0;
}
NRF_USBD->TASKS_STARTISOIN = 0;
NRF_USBD->TASKS_STARTISOOUT = 0;
varclr(&_dcd_data);
}
void USBD_IRQHandler(void)
{
uint32_t const inten = NRF_USBD->INTEN;
@ -455,6 +477,7 @@ void USBD_IRQHandler(void)
tusb_dcd_bus_event(0, USBD_BUS_EVENT_RESET);
}
/*------------- Control Transfer -------------*/
if ( int_status & USBD_INTEN_EP0SETUP_Msk )
{
uint8_t setup[8] = {
@ -466,12 +489,17 @@ void USBD_IRQHandler(void)
tusb_dcd_setup_received(0, setup);
}
if ( int_status & USBD_INTEN_ENDEPIN0_Msk )
{
edpt_dma_end();
}
if ( int_status & USBD_INTEN_EP0DATADONE_Msk )
{
if ( _dcd_data.control.dir == TUSB_DIR_OUT )
{
// out control need to wait for END EPOUT (DMA complete) event
NRF_USBD->TASKS_STARTEPOUT[0] = 1;
edpt_dma_start(0, TUSB_DIR_OUT);
}else
{
if ( _dcd_data.control.xfer_len > 0 )
@ -487,6 +515,8 @@ void USBD_IRQHandler(void)
if ( int_status & USBD_INTEN_ENDEPOUT0_Msk)
{
edpt_dma_end();
if ( _dcd_data.control.xfer_len > 0 )
{
control_xact_start();