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drivers/usbdev_synopsys_dwc2: handle RXFLVL interruprs in ISR

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Since RXFLVL (RX FIFO Level) interrupt doen't complete transfers anymore, they are handled now directly in the ISR.
This commit is contained in:
Gunar Schorcht 2023-04-15 14:15:25 +02:00
parent d15f0f3a7b
commit ea776c92b6
1 changed files with 10 additions and 14 deletions
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24
drivers/usbdev_synopsys_dwc2/usbdev_synopsys_dwc2.c
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@ -1442,13 +1442,14 @@ static void _copy_rxfifo(dwc2_usb_otg_fshs_t *usbdev, uint8_t *buf, size_t len)
}
}
static void _read_packet(dwc2_usb_otg_fshs_out_ep_t *st_ep)
static void _read_packet(dwc2_usb_otg_fshs_t *usbdev)
{
dwc2_usb_otg_fshs_t *usbdev = (dwc2_usb_otg_fshs_t *)st_ep->ep.dev;
const dwc2_usb_otg_fshs_config_t *conf = usbdev->config;
/* Pop status from the receive fifo status register */
uint32_t status = _global_regs(conf)->GRXSTSP;
unsigned epnum = (status & USB_OTG_GRXSTSP_EPNUM_Msk) >>
USB_OTG_GRXSTSP_EPNUM_Pos;
/* Packet status code */
unsigned pkt_status = (status & USB_OTG_GRXSTSP_PKTSTS_Msk) >>
USB_OTG_GRXSTSP_PKTSTS_Pos;
@ -1469,7 +1470,7 @@ static void _read_packet(dwc2_usb_otg_fshs_out_ep_t *st_ep)
if (len && !_uses_dma(conf)) {
/* in DMA mode, received data are directly written into memory */
_copy_rxfifo(usbdev, st_ep->out_buf, len);
_copy_rxfifo(usbdev, usbdev->out[epnum].out_buf, len);
}
}
@ -1497,13 +1498,6 @@ static void _usbdev_ep_esr(usbdev_ep_t *ep)
}
}
else {
/* RX FIFO not empty and the endpoint matches the function argument */
if ((_global_regs(conf)->GINTSTS & USB_OTG_GINTSTS_RXFLVL) &&
(_global_regs(conf)->GRXSTSR & USB_OTG_GRXSTSP_EPNUM_Msk) == ep->num &&
!_uses_dma(conf)) {
_read_packet(container_of(ep, dwc2_usb_otg_fshs_out_ep_t, ep));
}
uint32_t status = _out_regs(conf, ep->num)->DOEPINT;
if (status & USB_OTG_DOEPINT_STUP) {
@ -1556,10 +1550,12 @@ void _isr_common(dwc2_usb_otg_fshs_t *usbdev)
_global_regs(conf)->GAHBCFG &= ~USB_OTG_GAHBCFG_GINT;
if (status) {
if ((status & USB_OTG_GINTSTS_RXFLVL) && !_uses_dma(conf)) {
unsigned epnum = _global_regs(conf)->GRXSTSR &
USB_OTG_GRXSTSP_EPNUM_Msk;
usbdev->usbdev.epcb(&usbdev->out[epnum].ep, USBDEV_EVENT_ESR);
if (status & USB_OTG_GINTSTS_RXFLVL) {
/* The RXFLVL interrupt is only enabled in non-DMA mode. It is only
* used to read out the RX FIFO and set the SETUP stage flasg and
* can therefore be handled directly in the ISR. */
_read_packet(usbdev);
_global_regs(conf)->GAHBCFG |= USB_OTG_GAHBCFG_GINT;
}
else if (status & (USB_OTG_GINTSTS_OEPINT | USB_OTG_GINTSTS_IEPINT)) {
_isr_ep(usbdev);