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| author | Kyle Evans <kevans@FreeBSD.org> | 2023-02-28 01:59:43 +0000 |
|---|---|---|
| committer | Kyle Evans <kevans@FreeBSD.org> | 2023-02-28 22:16:14 +0000 |
| commit | 5e54bb1ea9e904075225dc96641c2ede3fc3273c (patch) | |
| tree | 4c5ffecd885bc00f9829625c951ffc030deffaa5 | |
| parent | dc8616edc580806afb1efaec1cdc3cc9a1b3804e (diff) | |
| download | src-5e54bb1ea9e904075225dc96641c2ede3fc3273c.tar.gz src-5e54bb1ea9e904075225dc96641c2ede3fc3273c.zip | |
usb: dwc3: implement hw.usb.xhci.use_polling
Polling is currently only implemented in the xhci pci attachment.
Adding it to dwc3 doesn't make it much uglier, and supporting it can be
useful for confirming that hardware's otherwise functional when
interrupts are apparently not firing.
Reviewed by: manu
Differential Revision: https://reviews.freebsd.org/D38816
| -rw-r--r-- | sys/dev/usb/controller/dwc3.c | 34 |
1 files changed, 28 insertions, 6 deletions
diff --git a/sys/dev/usb/controller/dwc3.c b/sys/dev/usb/controller/dwc3.c index 361db0f5e835..dc5c90df0d72 100644 --- a/sys/dev/usb/controller/dwc3.c +++ b/sys/dev/usb/controller/dwc3.c @@ -103,6 +103,17 @@ struct snps_dwc3_softc { #define IS_DMA_32B 1 +static void +xhci_interrupt_poll(void *_sc) +{ + struct xhci_softc *sc = _sc; + + USB_BUS_UNLOCK(&sc->sc_bus); + xhci_interrupt(sc); + USB_BUS_LOCK(&sc->sc_bus); + usb_callout_reset(&sc->sc_callout, 1, (void *)&xhci_interrupt_poll, sc); +} + static int snps_dwc3_attach_xhci(device_t dev) { @@ -133,12 +144,14 @@ snps_dwc3_attach_xhci(device_t dev) sprintf(sc->sc_vendor, "Synopsys"); device_set_desc(sc->sc_bus.bdev, "Synopsys"); - err = bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE, - NULL, (driver_intr_t *)xhci_interrupt, sc, &sc->sc_intr_hdl); - if (err != 0) { - device_printf(dev, "Failed to setup IRQ, %d\n", err); - sc->sc_intr_hdl = NULL; - return (err); + if (xhci_use_polling() == 0) { + err = bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE, + NULL, (driver_intr_t *)xhci_interrupt, sc, &sc->sc_intr_hdl); + if (err != 0) { + device_printf(dev, "Failed to setup IRQ, %d\n", err); + sc->sc_intr_hdl = NULL; + return (err); + } } err = xhci_init(sc, dev, IS_DMA_32B); @@ -147,6 +160,15 @@ snps_dwc3_attach_xhci(device_t dev) return (ENXIO); } + usb_callout_init_mtx(&sc->sc_callout, &sc->sc_bus.bus_mtx, 0); + + if (xhci_use_polling() != 0) { + device_printf(dev, "Interrupt polling at %dHz\n", hz); + USB_BUS_LOCK(&sc->sc_bus); + xhci_interrupt_poll(sc); + USB_BUS_UNLOCK(&sc->sc_bus); + } + err = xhci_start_controller(sc); if (err != 0) { device_printf(dev, "Failed to start XHCI controller, with error %d\n", err); |