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rtt-f030/bsp/gd32450z-eval/Libraries/GD32F4xx_usb_driver/Source/usbh_int.c

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/*!
\file usbh_int.c
\brief USB host mode interrupt handler file
*/
/*
Copyright (C) 2016 GigaDevice
2016-08-15, V1.0.1, firmware for GD32F4xx
*/
#include "usb_core.h"
#include "usb_defines.h"
#include "usbh_int.h"
static uint32_t usbh_intf_sof (usb_core_handle_struct *pudev);
static uint32_t usbh_intf_port (usb_core_handle_struct *pudev);
static uint32_t usbh_intf_hc (usb_core_handle_struct *pudev);
static uint32_t usbh_intf_hc_in (usb_core_handle_struct *pudev, uint8_t channel_num);
static uint32_t usbh_intf_hc_out (usb_core_handle_struct *pudev, uint8_t channel_num);
static uint32_t usbh_intf_rxfifo_noempty (usb_core_handle_struct *pudev);
static uint32_t usbh_intf_nptxfifo_empty (usb_core_handle_struct *pudev);
static uint32_t usbh_intf_ptxfifo_empty (usb_core_handle_struct *pudev);
static uint32_t usbh_intf_disconnect (usb_core_handle_struct *pudev);
static uint32_t usbh_intf_iso_incomplete_xfer (usb_core_handle_struct *pudev);
/*!
\brief handle global host interrupt
\param[in] pudev: pointer to usb device instance
\param[out] none
\retval operation status
*/
uint32_t usbh_isr (usb_core_handle_struct *pudev)
{
uint32_t retval = 0U;
uint32_t int_flag = 0U;
/* check if host mode */
if (USB_CURRENT_MODE_GET() == HOST_MODE) {
USB_CORE_INTR_READ(int_flag);
if (!int_flag) {
return 0U;
}
/* start of frame interrupt handle */
if (int_flag & GINTF_SOF) {
retval |= usbh_intf_sof (pudev);
}
/* Rx FIFO non-empty interrupt handle */
if (int_flag & GINTF_RXFNEIF) {
retval |= usbh_intf_rxfifo_noempty (pudev);
}
/* Non-Periodic Tx FIFO empty interrupt hanlde */
if (int_flag & GINTF_NPTXFEIF) {
retval |= usbh_intf_nptxfifo_empty (pudev);
}
/* periodic Tx FIFO empty interrupt handle */
if (int_flag & GINTF_PTXFEIF) {
retval |= usbh_intf_ptxfifo_empty (pudev);
}
/* host channels interrupt handle */
if (int_flag & GINTF_HCIF) {
retval |= usbh_intf_hc (pudev);
}
/* host port interrupt handle */
if (int_flag & GINTF_HPIF) {
retval |= usbh_intf_port (pudev);
}
/* disconnect interrupt handle */
if (int_flag & GINTF_DISCIF) {
retval |= usbh_intf_disconnect (pudev);
}
/* isochronous IN transfer not complete interrupt handle */
if (int_flag & GINTF_ISOONCIF) {
retval |= usbh_intf_iso_incomplete_xfer (pudev);
}
}
return retval;
}
/*!
\brief handle the start-of-frame interrupt in host mode
\param[in] pudev: pointer to usb device instance
\param[out] none
\retval operation status
*/
static uint32_t usbh_intf_sof (usb_core_handle_struct *pudev)
{
usbh_hcd_int_fops->sof(pudev);
/* clear interrupt */
USB_GINTF = GINTF_SOF;
return 1U;
}
/*!
\brief handle all host channels interrupt in host mode
\param[in] pudev: pointer to usb device instance
\param[out] none
\retval operation status
*/
static uint32_t usbh_intf_hc (usb_core_handle_struct *pudev)
{
uint8_t i = 0U;
uint32_t retval = 0U;
for (i = 0U; i < pudev->cfg.host_channel_num; i++) {
if ((USB_HACHINT & HACHINT_HACHINT) & ((uint32_t)1U << i)) {
if ((USB_HCHxCTL((uint16_t)i) & HCHCTL_EPDIR) >> 15U) {
retval |= usbh_intf_hc_in (pudev, i);
} else {
retval |= usbh_intf_hc_out (pudev, i);
}
}
}
return retval;
}
/*!
\brief handle the disconnect interrupt
\param[in] pudev: pointer to usb device instance
\param[out] none
\retval operation status
*/
static uint32_t usbh_intf_disconnect (usb_core_handle_struct *pudev)
{
usbh_hcd_int_fops->device_disconnected(pudev);
/* clear interrupt */
USB_GINTF = GINTF_DISCIF;
return 1U;
}
/*!
\brief handle the non-periodic tx fifo empty interrupt
\param[in] pudev: pointer to usb device instance
\param[out] none
\retval operation status
*/
static uint32_t usbh_intf_nptxfifo_empty (usb_core_handle_struct *pudev)
{
uint8_t channel_num = 0U;
uint32_t dword_len = 0U, len = 0U;
usb_hostchannel_struct *puhc;
channel_num = (uint8_t)((USB_HNPTFQSTAT & HNPTFQSTAT_CNUM) >> 27U);
puhc = &pudev->host.host_channel[channel_num];
dword_len = (puhc->xfer_len + 3U) / 4U;
while (((USB_HNPTFQSTAT & HNPTFQSTAT_NPTXFS) > dword_len) && (0U != puhc->xfer_len)) {
len = (USB_HNPTFQSTAT & HNPTFQSTAT_NPTXFS) * 4U;
if (len > puhc->xfer_len) {
/* last packet */
len = (uint16_t)puhc->xfer_len;
USB_GINTEN &= ~GINTF_NPTXFEIF;
}
dword_len = (puhc->xfer_len + 3U) / 4U;
usb_fifo_write (puhc->xfer_buff, channel_num, (uint16_t)len);
puhc->xfer_buff += len;
puhc->xfer_len -= len;
puhc->xfer_count += len;
}
return 1U;
}
/*!
\brief handle the periodic tx fifo empty interrupt
\param[in] pudev: pointer to usb device instance
\param[out] none
\retval operation status
*/
static uint32_t usbh_intf_ptxfifo_empty (usb_core_handle_struct *pudev)
{
uint8_t channel_num = 0U;
uint32_t dword_len = 0U, len = 0U;
usb_hostchannel_struct *puhc;
channel_num = (uint8_t)((USB_HPTFQSTAT & HPTFQSTAT_CNUM) >> 27U);
puhc = &pudev->host.host_channel[channel_num];
dword_len = (puhc->xfer_len + 3U) / 4U;
while (((USB_HPTFQSTAT & HPTFQSTAT_PTXFS) > dword_len) && (0U != puhc->xfer_len)) {
len = (USB_HPTFQSTAT & HPTFQSTAT_PTXFS) * 4U;
if (len > puhc->xfer_len) {
len = puhc->xfer_len;
/* last packet */
USB_GINTEN &= ~GINTF_PTXFEIF;
}
dword_len = (puhc->xfer_len + 3U) / 4U;
usb_fifo_write (puhc->xfer_buff, channel_num, (uint16_t)len);
puhc->xfer_buff += len;
puhc->xfer_len -= len;
puhc->xfer_count += len;
}
return 1U;
}
/*!
\brief handle the host port interrupt
\param[in] pudev: pointer to usb device instance
\param[out] none
\retval operation status
*/
static uint32_t usbh_intf_port (usb_core_handle_struct *pudev)
{
uint8_t port_speed = 0U;
uint8_t port_reset = 0U;
uint32_t retval = 0U;
__IO uint32_t hostportdup = USB_HPCS;
/* clear the interrupt bits in gintsts */
hostportdup &= ~HPCS_PE;
hostportdup &= ~HPCS_PCD;
hostportdup &= ~HPCS_PEDC;
/* port connect detected */
if (USB_HPCS & HPCS_PCD) {
hostportdup |= HPCS_PCD;
usbh_hcd_int_fops->device_connected(pudev);
retval |= 1U;
}
/* port enable changed */
if (USB_HPCS & HPCS_PEDC) {
hostportdup |= HPCS_PEDC;
if (USB_HPCS & HPCS_PE) {
port_speed = (uint8_t)((USB_HPCS & HPCS_PS) >> 17U);
if (HPRT_PRTSPD_LOW_SPEED == port_speed) {
USB_HFT = 6000U;
if (HCTLR_6_MHZ != (USB_HCTL & HCTL_CLKSEL)) {
if (USB_CORE_EMBEDDED_PHY == pudev->cfg.phy_interface) {
USB_FSLSCLOCK_INIT(HCTLR_6_MHZ);
}
port_reset = 1U;
}
} else if(HPRT_PRTSPD_FULL_SPEED == port_speed) {
USB_HFT = 48000U;
if (HCTLR_48_MHZ != (USB_HCTL & HCTL_CLKSEL)) {
if (USB_CORE_EMBEDDED_PHY == pudev->cfg.phy_interface) {
USB_FSLSCLOCK_INIT(HCTLR_48_MHZ);
}
port_reset = 1U;
}
} else {
/* for high speed device and others */
port_reset = 1U;
}
}
}
if (port_reset) {
usb_port_reset(pudev);
}
/* clear port interrupts */
USB_HPCS = hostportdup;
return retval;
}
/*!
\brief handle the OUT channel interrupt
\param[in] pudev: pointer to usb device instance
\param[in] channel_num: host channel number which is in (0..7)
\param[out] none
\retval operation status
*/
static uint32_t usbh_intf_hc_out (usb_core_handle_struct *pudev, uint8_t channel_num)
{
uint32_t channel_intr = USB_HCHxINTF((uint16_t)channel_num);
usb_hostchannel_struct *puhc = &pudev->host.host_channel[channel_num];
channel_intr &= USB_HCHxINTEN((uint16_t)channel_num);
if (channel_intr & HCHINTF_ACK) {
if (URB_PING == puhc->urb_state) {
puhc->err_count = 0U;
USB_HCHxINTEN((uint16_t)channel_num) |= HCHINTEN_CHIE;
usb_hostchannel_halt(pudev, channel_num);
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_TF;
puhc->status = HC_XF;
}
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_ACK;
} else if (channel_intr & HCHINTF_REQOVR) {
USB_HCHxINTEN((uint16_t)channel_num) |= HCHINTEN_CHIE;
usb_hostchannel_halt(pudev, channel_num);
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_REQOVR;
} else if (channel_intr & HCHINTF_TF) {
puhc->err_count = 0U;
USB_HCHxINTEN((uint16_t)channel_num) |= HCHINTEN_CHIE;
usb_hostchannel_halt(pudev, channel_num);
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_TF;
puhc->status = HC_XF;
} else if (channel_intr & HCHINTF_STALL) {
USB_HCHxINTEN((uint16_t)channel_num) |= HCHINTEN_CHIE;
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_STALL;
usb_hostchannel_halt(pudev, channel_num);
puhc->status = HC_STALL;
} else if (channel_intr & HCHINTF_NAK) {
puhc->err_count = 0U;
USB_HCHxINTEN((uint16_t)channel_num) |= HCHINTEN_CHIE;
usb_hostchannel_halt(pudev, channel_num);
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_NAK;
puhc->status = HC_NAK;
} else if (channel_intr & HCHINTF_USBER) {
USB_HCHxINTEN((uint16_t)channel_num) |= HCHINTEN_CHIE;
usb_hostchannel_halt(pudev, channel_num);
puhc->err_count ++;
puhc->status = HC_TRACERR;
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_USBER;
} else if (channel_intr & HCHINTF_NYET) {
puhc->err_count = 0U;
USB_HCHxINTEN((uint16_t)channel_num) |= HCHINTEN_CHIE;
puhc->status = HC_NYET;
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_NYET;
} else if (channel_intr & HCHINTF_DTER) {
USB_HCHxINTEN((uint16_t)channel_num) |= HCHINTEN_CHIE;
usb_hostchannel_halt(pudev, channel_num);
puhc->status= HC_DTGERR;
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_DTER;
} else if (channel_intr & HCHINTF_CH) {
USB_HCHxINTEN((uint16_t)channel_num) &= ~HCHINTEN_CHIE;
switch (puhc->status) {
case HC_XF:
puhc->urb_state = URB_DONE;
if (USB_EPTYPE_BULK == ((USB_HCHxCTL((uint16_t)channel_num) & HCHCTL_EPTYPE) >> 18)) {
puhc->data_tg_out ^= 1U;
}
break;
case HC_NAK:
if (URB_PING == puhc->urb_state) {
usb_hostchannel_ping(pudev, channel_num);
} else {
puhc->urb_state = URB_NOTREADY;
}
break;
case HC_NYET:
if (1U == puhc->do_ping) {
usb_hostchannel_ping(pudev, channel_num);
puhc->urb_state = URB_PING;
}
break;
case HC_STALL:
puhc->urb_state = URB_STALL;
break;
case HC_TRACERR:
if (3U == puhc->err_count) {
puhc->urb_state = URB_ERROR;
puhc->err_count = 0U;
}
break;
default:
break;
}
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_CH;
} else {
/* no operation */
}
return 1U;
}
/*!
\brief handle the IN channel interrupt
\param[in] pudev: pointer to usb device instance
\param[in] channel_num: host channel number which is in (0..7)
\param[out] none
\retval operation status
*/
static uint32_t usbh_intf_hc_in (usb_core_handle_struct *pudev, uint8_t channel_num)
{
uint8_t endp_type = 0U;
usb_hostchannel_struct *puhc = &pudev->host.host_channel[channel_num];
uint32_t channle_intf = USB_HCHxINTF((uint16_t)channel_num);
__IO uint32_t channel_ctrl = USB_HCHxCTL((uint16_t)channel_num);
channle_intf &= USB_HCHxINTEN((uint16_t)channel_num);
endp_type = (uint8_t)((channel_ctrl & HCHCTL_EPTYPE) >> 18U);
if (channle_intf & HCHINTF_ACK) {
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_ACK;
} else if (channle_intf & HCHINTF_STALL) {
USB_HCHxINTEN((uint16_t)channel_num) |= HCHINTEN_CHIE;
puhc->status = HC_STALL;
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_NAK;
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_STALL;
/* NOTE: When there is a 'stall', reset also nak,
else, the pudev->host.status = HC_STALL
will be overwritten by 'nak' in code below */
channle_intf &= ~HCHINTF_NAK;
usb_hostchannel_halt(pudev, channel_num);
} else if (channle_intf & HCHINTF_DTER) {
USB_HCHxINTEN((uint16_t)channel_num) |= HCHINTEN_CHIE;
usb_hostchannel_halt(pudev, channel_num);
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_NAK;
puhc->status = HC_DTGERR;
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_DTER;
} else {
/* no operation */
}
if (channle_intf & HCHINTF_REQOVR) {
USB_HCHxINTEN((uint16_t)channel_num) |= HCHINTEN_CHIE;
usb_hostchannel_halt(pudev, channel_num);
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_REQOVR;
} else if (channle_intf & HCHINTF_TF) {
if (pudev->cfg.dma_enable == 1U) {
uint32_t xfer_size = USB_HCHxLEN((uint16_t)channel_num) & HCHLEN_TLEN;
puhc->xfer_count = puhc->xfer_len - xfer_size;
}
puhc->status = HC_XF;
puhc->err_count = 0U;
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_TF;
if ((USB_EPTYPE_CTRL == endp_type) || (USB_EPTYPE_BULK == endp_type)) {
USB_HCHxINTEN((uint16_t)channel_num) |= HCHINTEN_CHIE;
usb_hostchannel_halt(pudev, channel_num);
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_NAK;
puhc->data_tg_in ^= 1U;
} else if (USB_EPTYPE_INTR == endp_type) {
channel_ctrl |= HCHCTL_ODDFRM;
USB_HCHxCTL((uint16_t)channel_num) = channel_ctrl;
puhc->urb_state = URB_DONE;
} else {
/* no operation */
}
} else if (channle_intf & HCHINTF_CH) {
USB_HCHxINTEN((uint16_t)channel_num) &= ~HCHINTEN_CHIE;
switch (puhc->status) {
case HC_XF:
puhc->urb_state = URB_DONE;
break;
case HC_TRACERR:
case HC_DTGERR:
puhc->err_count = 0U;
puhc->urb_state = URB_ERROR;
break;
case HC_STALL:
puhc->urb_state = URB_STALL;
break;
default:
if (USB_EPTYPE_INTR == endp_type) {
puhc->data_tg_in ^= 1U;
}
break;
}
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_CH;
} else if (channle_intf & HCHINTF_USBER) {
USB_HCHxINTEN((uint16_t)channel_num) |= HCHINTEN_CHIE;
(puhc->err_count)++;
puhc->status = HC_TRACERR;
usb_hostchannel_halt(pudev, channel_num);
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_USBER;
} else if (channle_intf & HCHINTF_NAK) {
if (USB_EPTYPE_INTR == endp_type) {
USB_HCHxINTEN((uint16_t)channel_num) |= HCHINTEN_CHIE;
usb_hostchannel_halt(pudev, channel_num);
} else if ((USB_EPTYPE_CTRL == endp_type) || (USB_EPTYPE_BULK == endp_type)) {
/* re-activate the channel */
channel_ctrl |= HCHCTL_CEN;
channel_ctrl &= ~HCHCTL_CDIS;
USB_HCHxCTL((uint16_t)channel_num) = channel_ctrl;
} else {
/* no operation */
}
puhc->status = HC_NAK;
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_NAK;
} else {
/* no operation */
}
return 1U;
}
/*!
\brief handle the rx fifo non-empty interrupt
\param[in] pudev: pointer to usb device instance
\param[out] none
\retval operation status
*/
static uint32_t usbh_intf_rxfifo_noempty (usb_core_handle_struct *pudev)
{
uint32_t count = 0U;
__IO uint8_t channel_num = 0U;
__IO uint32_t rx_status = 0U;
uint32_t usbh_ch_ctl_reg = 0U;
usb_hostchannel_struct *puhc;
/* disable the Rx status queue level interrupt */
USB_GINTEN &= ~GINTF_RXFNEIF;
rx_status = USB_GRSTATP;
channel_num = (uint8_t)(rx_status & GRSTATR_CNUM);
puhc = &pudev->host.host_channel[channel_num];
switch ((rx_status & GRSTATR_RPCKST) >> 17) {
case GRSTATR_RPCKST_IN:
count = (rx_status & GRSTATR_BCOUNT) >> 4;
/* read the data into the host buffer. */
if ((count > 0U) && (puhc->xfer_buff != (void *)0)) {
usb_fifo_read(puhc->xfer_buff, (uint16_t)count);
/* manage multiple Xfer */
puhc->xfer_buff += count;
puhc->xfer_count += count;
if (USB_HCHxLEN((uint16_t)channel_num) & HCHLEN_PCNT) {
/* re-activate the channel when more packets are expected */
usbh_ch_ctl_reg = USB_HCHxCTL((uint16_t)channel_num);
usbh_ch_ctl_reg |= HCHCTL_CEN;
usbh_ch_ctl_reg &= ~HCHCTL_CDIS;
USB_HCHxCTL((uint16_t)channel_num) = usbh_ch_ctl_reg;
}
}
break;
case GRSTATR_RPCKST_IN_XFER_COMP:
case GRSTATR_RPCKST_DATA_TOGGLE_ERR:
case GRSTATR_RPCKST_CH_HALTED:
default:
break;
}
/* enable the Rx status queue level interrupt */
USB_GINTEN |= GINTF_RXFNEIF;
return 1U;
}
/*!
\brief handle the incomplete periodic transfer interrupt
\param[in] pudev: pointer to usb device instance
\param[out] none
\retval operation status
*/
static uint32_t usbh_intf_iso_incomplete_xfer (usb_core_handle_struct *pudev)
{
__IO uint32_t gint_flag = 0U;
gint_flag = USB_HCHxCTL(0U);
USB_HCHxCTL(0U) = 0U;
gint_flag = 0U;
/* clear interrupt */
gint_flag |= GINTF_ISOONCIF;
USB_GINTF = gint_flag;
return 1U;
}
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