Index: head/sys/dev/usb/controller/dwc_otg.c =================================================================== --- head/sys/dev/usb/controller/dwc_otg.c (revision 339387) +++ head/sys/dev/usb/controller/dwc_otg.c (revision 339388) @@ -1,5000 +1,5015 @@ /* $FreeBSD$ */ /*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 2015 Daisuke Aoyama. All rights reserved. * Copyright (c) 2012-2015 Hans Petter Selasky. All rights reserved. * Copyright (c) 2010-2011 Aleksandr Rybalko. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * This file contains the driver for the DesignWare series USB 2.0 OTG * Controller. */ /* * LIMITATION: Drivers must be bound to all OUT endpoints in the * active configuration for this driver to work properly. Blocking any * OUT endpoint will block all OUT endpoints including the control * endpoint. Usually this is not a problem. */ /* * NOTE: Writing to non-existing registers appears to cause an * internal reset. */ #ifdef USB_GLOBAL_INCLUDE_FILE #include USB_GLOBAL_INCLUDE_FILE #else #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define USB_DEBUG_VAR dwc_otg_debug #include #include #include #include #include #include #include #include #include #include #endif /* USB_GLOBAL_INCLUDE_FILE */ #include #include #define DWC_OTG_BUS2SC(bus) \ ((struct dwc_otg_softc *)(((uint8_t *)(bus)) - \ ((uint8_t *)&(((struct dwc_otg_softc *)0)->sc_bus)))) #define DWC_OTG_PC2UDEV(pc) \ (USB_DMATAG_TO_XROOT((pc)->tag_parent)->udev) #define DWC_OTG_MSK_GINT_THREAD_IRQ \ (GINTSTS_USBRST | GINTSTS_ENUMDONE | GINTSTS_PRTINT | \ GINTSTS_WKUPINT | GINTSTS_USBSUSP | GINTMSK_OTGINTMSK | \ GINTSTS_SESSREQINT) #ifndef DWC_OTG_PHY_DEFAULT #define DWC_OTG_PHY_DEFAULT DWC_OTG_PHY_ULPI #endif static int dwc_otg_phy_type = DWC_OTG_PHY_DEFAULT; static SYSCTL_NODE(_hw_usb, OID_AUTO, dwc_otg, CTLFLAG_RW, 0, "USB DWC OTG"); SYSCTL_INT(_hw_usb_dwc_otg, OID_AUTO, phy_type, CTLFLAG_RDTUN, &dwc_otg_phy_type, 0, "DWC OTG PHY TYPE - 0/1/2/3 - ULPI/HSIC/INTERNAL/UTMI+"); #ifdef USB_DEBUG static int dwc_otg_debug = 0; SYSCTL_INT(_hw_usb_dwc_otg, OID_AUTO, debug, CTLFLAG_RWTUN, &dwc_otg_debug, 0, "DWC OTG debug level"); #endif #define DWC_OTG_INTR_ENDPT 1 /* prototypes */ static const struct usb_bus_methods dwc_otg_bus_methods; static const struct usb_pipe_methods dwc_otg_device_non_isoc_methods; static const struct usb_pipe_methods dwc_otg_device_isoc_methods; static dwc_otg_cmd_t dwc_otg_setup_rx; static dwc_otg_cmd_t dwc_otg_data_rx; static dwc_otg_cmd_t dwc_otg_data_tx; static dwc_otg_cmd_t dwc_otg_data_tx_sync; static dwc_otg_cmd_t dwc_otg_host_setup_tx; static dwc_otg_cmd_t dwc_otg_host_data_tx; static dwc_otg_cmd_t dwc_otg_host_data_rx; static void dwc_otg_device_done(struct usb_xfer *, usb_error_t); static void dwc_otg_do_poll(struct usb_bus *); static void dwc_otg_standard_done(struct usb_xfer *); static void dwc_otg_root_intr(struct dwc_otg_softc *); static void dwc_otg_interrupt_poll_locked(struct dwc_otg_softc *); /* * Here is a configuration that the chip supports. */ static const struct usb_hw_ep_profile dwc_otg_ep_profile[1] = { [0] = { .max_in_frame_size = 64,/* fixed */ .max_out_frame_size = 64, /* fixed */ .is_simplex = 1, .support_control = 1, } }; static void dwc_otg_get_hw_ep_profile(struct usb_device *udev, const struct usb_hw_ep_profile **ppf, uint8_t ep_addr) { struct dwc_otg_softc *sc; sc = DWC_OTG_BUS2SC(udev->bus); if (ep_addr < sc->sc_dev_ep_max) *ppf = &sc->sc_hw_ep_profile[ep_addr].usb; else *ppf = NULL; } static void dwc_otg_write_fifo(struct dwc_otg_softc *sc, struct usb_page_cache *pc, uint32_t offset, uint32_t fifo, uint32_t count) { uint32_t temp; /* round down length to nearest 4-bytes */ temp = count & ~3; /* check if we can write the data directly */ if (temp != 0 && usb_pc_buffer_is_aligned(pc, offset, temp, 3)) { struct usb_page_search buf_res; /* pre-subtract length */ count -= temp; /* iterate buffer list */ do { /* get current buffer pointer */ usbd_get_page(pc, offset, &buf_res); if (buf_res.length > temp) buf_res.length = temp; /* transfer data into FIFO */ bus_space_write_region_4(sc->sc_io_tag, sc->sc_io_hdl, fifo, buf_res.buffer, buf_res.length / 4); offset += buf_res.length; fifo += buf_res.length; temp -= buf_res.length; } while (temp != 0); } /* check for remainder */ if (count != 0) { /* clear topmost word before copy */ sc->sc_bounce_buffer[(count - 1) / 4] = 0; /* copy out data */ usbd_copy_out(pc, offset, sc->sc_bounce_buffer, count); /* transfer data into FIFO */ bus_space_write_region_4(sc->sc_io_tag, sc->sc_io_hdl, fifo, sc->sc_bounce_buffer, (count + 3) / 4); } } static void dwc_otg_read_fifo(struct dwc_otg_softc *sc, struct usb_page_cache *pc, uint32_t offset, uint32_t count) { uint32_t temp; /* round down length to nearest 4-bytes */ temp = count & ~3; /* check if we can read the data directly */ if (temp != 0 && usb_pc_buffer_is_aligned(pc, offset, temp, 3)) { struct usb_page_search buf_res; /* pre-subtract length */ count -= temp; /* iterate buffer list */ do { /* get current buffer pointer */ usbd_get_page(pc, offset, &buf_res); if (buf_res.length > temp) buf_res.length = temp; /* transfer data from FIFO */ bus_space_read_region_4(sc->sc_io_tag, sc->sc_io_hdl, sc->sc_current_rx_fifo, buf_res.buffer, buf_res.length / 4); offset += buf_res.length; sc->sc_current_rx_fifo += buf_res.length; sc->sc_current_rx_bytes -= buf_res.length; temp -= buf_res.length; } while (temp != 0); } /* check for remainder */ if (count != 0) { /* read data into bounce buffer */ bus_space_read_region_4(sc->sc_io_tag, sc->sc_io_hdl, sc->sc_current_rx_fifo, sc->sc_bounce_buffer, (count + 3) / 4); /* store data into proper buffer */ usbd_copy_in(pc, offset, sc->sc_bounce_buffer, count); /* round length up to nearest 4 bytes */ count = (count + 3) & ~3; /* update counters */ sc->sc_current_rx_bytes -= count; sc->sc_current_rx_fifo += count; } } static void dwc_otg_tx_fifo_reset(struct dwc_otg_softc *sc, uint32_t value) { uint32_t temp; /* reset FIFO */ DWC_OTG_WRITE_4(sc, DOTG_GRSTCTL, value); /* wait for reset to complete */ for (temp = 0; temp != 16; temp++) { value = DWC_OTG_READ_4(sc, DOTG_GRSTCTL); if (!(value & (GRSTCTL_TXFFLSH | GRSTCTL_RXFFLSH))) break; } } static int dwc_otg_init_fifo(struct dwc_otg_softc *sc, uint8_t mode) { struct dwc_otg_profile *pf; uint32_t fifo_size; uint32_t fifo_regs; uint32_t tx_start; uint8_t x; fifo_size = sc->sc_fifo_size; /* * NOTE: Reserved fixed size area at end of RAM, which must * not be allocated to the FIFOs: */ fifo_regs = 4 * 16; if (fifo_size < fifo_regs) { DPRINTF("Too little FIFO\n"); return (EINVAL); } /* subtract FIFO regs from total once */ fifo_size -= fifo_regs; /* split equally for IN and OUT */ fifo_size /= 2; /* Align to 4 bytes boundary (refer to PGM) */ fifo_size &= ~3; /* set global receive FIFO size */ DWC_OTG_WRITE_4(sc, DOTG_GRXFSIZ, fifo_size / 4); tx_start = fifo_size; if (fifo_size < 64) { DPRINTFN(-1, "Not enough data space for EP0 FIFO.\n"); return (EINVAL); } if (mode == DWC_MODE_HOST) { /* reset active endpoints */ sc->sc_active_rx_ep = 0; /* split equally for periodic and non-periodic */ fifo_size /= 2; DPRINTF("PTX/NPTX FIFO=%u\n", fifo_size); /* align to 4 bytes boundary */ fifo_size &= ~3; DWC_OTG_WRITE_4(sc, DOTG_GNPTXFSIZ, ((fifo_size / 4) << 16) | (tx_start / 4)); tx_start += fifo_size; for (x = 0; x != sc->sc_host_ch_max; x++) { /* enable all host interrupts */ DWC_OTG_WRITE_4(sc, DOTG_HCINTMSK(x), HCINT_DEFAULT_MASK); } DWC_OTG_WRITE_4(sc, DOTG_HPTXFSIZ, ((fifo_size / 4) << 16) | (tx_start / 4)); /* reset host channel state */ memset(sc->sc_chan_state, 0, sizeof(sc->sc_chan_state)); /* enable all host channel interrupts */ DWC_OTG_WRITE_4(sc, DOTG_HAINTMSK, (1U << sc->sc_host_ch_max) - 1U); /* enable proper host channel interrupts */ sc->sc_irq_mask |= GINTMSK_HCHINTMSK; sc->sc_irq_mask &= ~GINTMSK_IEPINTMSK; DWC_OTG_WRITE_4(sc, DOTG_GINTMSK, sc->sc_irq_mask); } if (mode == DWC_MODE_DEVICE) { DWC_OTG_WRITE_4(sc, DOTG_GNPTXFSIZ, (0x10 << 16) | (tx_start / 4)); fifo_size -= 0x40; tx_start += 0x40; /* setup control endpoint profile */ sc->sc_hw_ep_profile[0].usb = dwc_otg_ep_profile[0]; /* reset active endpoints */ sc->sc_active_rx_ep = 1; for (x = 1; x != sc->sc_dev_ep_max; x++) { pf = sc->sc_hw_ep_profile + x; pf->usb.max_out_frame_size = 1024 * 3; pf->usb.is_simplex = 0; /* assume duplex */ pf->usb.support_bulk = 1; pf->usb.support_interrupt = 1; pf->usb.support_isochronous = 1; pf->usb.support_out = 1; if (x < sc->sc_dev_in_ep_max) { uint32_t limit; limit = (x == 1) ? MIN(DWC_OTG_TX_MAX_FIFO_SIZE, DWC_OTG_MAX_TXN) : MIN(DWC_OTG_MAX_TXN / 2, DWC_OTG_TX_MAX_FIFO_SIZE); /* see if there is enough FIFO space */ if (limit <= fifo_size) { pf->max_buffer = limit; pf->usb.support_in = 1; } else { limit = MIN(DWC_OTG_TX_MAX_FIFO_SIZE, 0x40); if (limit <= fifo_size) { pf->usb.support_in = 1; } else { pf->usb.is_simplex = 1; limit = 0; } } /* set FIFO size */ DWC_OTG_WRITE_4(sc, DOTG_DIEPTXF(x), ((limit / 4) << 16) | (tx_start / 4)); tx_start += limit; fifo_size -= limit; pf->usb.max_in_frame_size = limit; } else { pf->usb.is_simplex = 1; } DPRINTF("FIFO%d = IN:%d / OUT:%d\n", x, pf->usb.max_in_frame_size, pf->usb.max_out_frame_size); } /* enable proper device channel interrupts */ sc->sc_irq_mask &= ~GINTMSK_HCHINTMSK; sc->sc_irq_mask |= GINTMSK_IEPINTMSK; DWC_OTG_WRITE_4(sc, DOTG_GINTMSK, sc->sc_irq_mask); } /* reset RX FIFO */ dwc_otg_tx_fifo_reset(sc, GRSTCTL_RXFFLSH); if (mode != DWC_MODE_OTG) { /* reset all TX FIFOs */ dwc_otg_tx_fifo_reset(sc, GRSTCTL_TXFIFO(0x10) | GRSTCTL_TXFFLSH); } else { /* reset active endpoints */ sc->sc_active_rx_ep = 0; /* reset host channel state */ memset(sc->sc_chan_state, 0, sizeof(sc->sc_chan_state)); } return (0); } static uint8_t dwc_otg_uses_split(struct usb_device *udev) { /* * When a LOW or FULL speed device is connected directly to * the USB port we don't use split transactions: */ return (udev->speed != USB_SPEED_HIGH && udev->parent_hs_hub != NULL && udev->parent_hs_hub->parent_hub != NULL); } static void dwc_otg_update_host_frame_interval(struct dwc_otg_softc *sc) { /* * Disabled until further. Assuming that the register is already * programmed correctly by the boot loader. */ #if 0 uint32_t temp; /* setup HOST frame interval register, based on existing value */ temp = DWC_OTG_READ_4(sc, DOTG_HFIR) & HFIR_FRINT_MASK; if (temp >= 10000) temp /= 1000; else temp /= 125; /* figure out nearest X-tal value */ if (temp >= 54) temp = 60; /* MHz */ else if (temp >= 39) temp = 48; /* MHz */ else temp = 30; /* MHz */ if (sc->sc_flags.status_high_speed) temp *= 125; else temp *= 1000; DPRINTF("HFIR=0x%08x\n", temp); DWC_OTG_WRITE_4(sc, DOTG_HFIR, temp); #endif } static void dwc_otg_clocks_on(struct dwc_otg_softc *sc) { if (sc->sc_flags.clocks_off && sc->sc_flags.port_powered) { DPRINTFN(5, "\n"); /* TODO - platform specific */ sc->sc_flags.clocks_off = 0; } } static void dwc_otg_clocks_off(struct dwc_otg_softc *sc) { if (!sc->sc_flags.clocks_off) { DPRINTFN(5, "\n"); /* TODO - platform specific */ sc->sc_flags.clocks_off = 1; } } static void dwc_otg_pull_up(struct dwc_otg_softc *sc) { uint32_t temp; /* pullup D+, if possible */ if (!sc->sc_flags.d_pulled_up && sc->sc_flags.port_powered) { sc->sc_flags.d_pulled_up = 1; temp = DWC_OTG_READ_4(sc, DOTG_DCTL); temp &= ~DCTL_SFTDISCON; DWC_OTG_WRITE_4(sc, DOTG_DCTL, temp); } } static void dwc_otg_pull_down(struct dwc_otg_softc *sc) { uint32_t temp; /* pulldown D+, if possible */ if (sc->sc_flags.d_pulled_up) { sc->sc_flags.d_pulled_up = 0; temp = DWC_OTG_READ_4(sc, DOTG_DCTL); temp |= DCTL_SFTDISCON; DWC_OTG_WRITE_4(sc, DOTG_DCTL, temp); } } static void dwc_otg_enable_sof_irq(struct dwc_otg_softc *sc) { /* In device mode we don't use the SOF interrupt */ if (sc->sc_flags.status_device_mode != 0) return; /* Ensure the SOF interrupt is not disabled */ sc->sc_needsof = 1; /* Check if the SOF interrupt is already enabled */ if ((sc->sc_irq_mask & GINTMSK_SOFMSK) != 0) return; sc->sc_irq_mask |= GINTMSK_SOFMSK; DWC_OTG_WRITE_4(sc, DOTG_GINTMSK, sc->sc_irq_mask); } static void dwc_otg_resume_irq(struct dwc_otg_softc *sc) { if (sc->sc_flags.status_suspend) { /* update status bits */ sc->sc_flags.status_suspend = 0; sc->sc_flags.change_suspend = 1; if (sc->sc_flags.status_device_mode) { /* * Disable resume interrupt and enable suspend * interrupt: */ sc->sc_irq_mask &= ~GINTMSK_WKUPINTMSK; sc->sc_irq_mask |= GINTMSK_USBSUSPMSK; DWC_OTG_WRITE_4(sc, DOTG_GINTMSK, sc->sc_irq_mask); } /* complete root HUB interrupt endpoint */ dwc_otg_root_intr(sc); } } static void dwc_otg_suspend_irq(struct dwc_otg_softc *sc) { if (!sc->sc_flags.status_suspend) { /* update status bits */ sc->sc_flags.status_suspend = 1; sc->sc_flags.change_suspend = 1; if (sc->sc_flags.status_device_mode) { /* * Disable suspend interrupt and enable resume * interrupt: */ sc->sc_irq_mask &= ~GINTMSK_USBSUSPMSK; sc->sc_irq_mask |= GINTMSK_WKUPINTMSK; DWC_OTG_WRITE_4(sc, DOTG_GINTMSK, sc->sc_irq_mask); } /* complete root HUB interrupt endpoint */ dwc_otg_root_intr(sc); } } static void dwc_otg_wakeup_peer(struct dwc_otg_softc *sc) { if (!sc->sc_flags.status_suspend) return; DPRINTFN(5, "Remote wakeup\n"); if (sc->sc_flags.status_device_mode) { uint32_t temp; /* enable remote wakeup signalling */ temp = DWC_OTG_READ_4(sc, DOTG_DCTL); temp |= DCTL_RMTWKUPSIG; DWC_OTG_WRITE_4(sc, DOTG_DCTL, temp); /* Wait 8ms for remote wakeup to complete. */ usb_pause_mtx(&sc->sc_bus.bus_mtx, hz / 125); temp &= ~DCTL_RMTWKUPSIG; DWC_OTG_WRITE_4(sc, DOTG_DCTL, temp); } else { /* enable USB port */ DWC_OTG_WRITE_4(sc, DOTG_PCGCCTL, 0); /* wait 10ms */ usb_pause_mtx(&sc->sc_bus.bus_mtx, hz / 100); /* resume port */ sc->sc_hprt_val |= HPRT_PRTRES; DWC_OTG_WRITE_4(sc, DOTG_HPRT, sc->sc_hprt_val); /* Wait 100ms for resume signalling to complete. */ usb_pause_mtx(&sc->sc_bus.bus_mtx, hz / 10); /* clear suspend and resume */ sc->sc_hprt_val &= ~(HPRT_PRTSUSP | HPRT_PRTRES); DWC_OTG_WRITE_4(sc, DOTG_HPRT, sc->sc_hprt_val); /* Wait 4ms */ usb_pause_mtx(&sc->sc_bus.bus_mtx, hz / 250); } /* need to fake resume IRQ */ dwc_otg_resume_irq(sc); } static void dwc_otg_set_address(struct dwc_otg_softc *sc, uint8_t addr) { uint32_t temp; DPRINTFN(5, "addr=%d\n", addr); temp = DWC_OTG_READ_4(sc, DOTG_DCFG); temp &= ~DCFG_DEVADDR_SET(0x7F); temp |= DCFG_DEVADDR_SET(addr); DWC_OTG_WRITE_4(sc, DOTG_DCFG, temp); } static void dwc_otg_common_rx_ack(struct dwc_otg_softc *sc) { DPRINTFN(5, "RX status clear\n"); /* enable RX FIFO level interrupt */ sc->sc_irq_mask |= GINTMSK_RXFLVLMSK; DWC_OTG_WRITE_4(sc, DOTG_GINTMSK, sc->sc_irq_mask); if (sc->sc_current_rx_bytes != 0) { /* need to dump remaining data */ bus_space_read_region_4(sc->sc_io_tag, sc->sc_io_hdl, sc->sc_current_rx_fifo, sc->sc_bounce_buffer, sc->sc_current_rx_bytes / 4); /* clear number of active bytes to receive */ sc->sc_current_rx_bytes = 0; } /* clear cached status */ sc->sc_last_rx_status = 0; } static void dwc_otg_clear_hcint(struct dwc_otg_softc *sc, uint8_t x) { uint32_t hcint; /* clear all pending interrupts */ hcint = DWC_OTG_READ_4(sc, DOTG_HCINT(x)); DWC_OTG_WRITE_4(sc, DOTG_HCINT(x), hcint); /* clear buffered interrupts */ sc->sc_chan_state[x].hcint = 0; } static uint8_t dwc_otg_host_check_tx_fifo_empty(struct dwc_otg_softc *sc, struct dwc_otg_td *td) { uint32_t temp; temp = DWC_OTG_READ_4(sc, DOTG_GINTSTS); if (td->ep_type == UE_ISOCHRONOUS) { /* * NOTE: USB INTERRUPT transactions are executed like * USB CONTROL transactions! See the setup standard * chain function for more information. */ if (!(temp & GINTSTS_PTXFEMP)) { DPRINTF("Periodic TX FIFO is not empty\n"); if (!(sc->sc_irq_mask & GINTMSK_PTXFEMPMSK)) { sc->sc_irq_mask |= GINTMSK_PTXFEMPMSK; DWC_OTG_WRITE_4(sc, DOTG_GINTMSK, sc->sc_irq_mask); } return (1); /* busy */ } } else { if (!(temp & GINTSTS_NPTXFEMP)) { DPRINTF("Non-periodic TX FIFO is not empty\n"); if (!(sc->sc_irq_mask & GINTMSK_NPTXFEMPMSK)) { sc->sc_irq_mask |= GINTMSK_NPTXFEMPMSK; DWC_OTG_WRITE_4(sc, DOTG_GINTMSK, sc->sc_irq_mask); } return (1); /* busy */ } } return (0); /* ready for transmit */ } static uint8_t dwc_otg_host_channel_alloc(struct dwc_otg_softc *sc, struct dwc_otg_td *td, uint8_t is_out) { uint8_t x; uint8_t y; uint8_t z; if (td->channel[0] < DWC_OTG_MAX_CHANNELS) return (0); /* already allocated */ /* check if device is suspended */ if (DWC_OTG_PC2UDEV(td->pc)->flags.self_suspended != 0) return (1); /* busy - cannot transfer data */ /* compute needed TX FIFO size */ if (is_out != 0) { if (dwc_otg_host_check_tx_fifo_empty(sc, td) != 0) return (1); /* busy - cannot transfer data */ } z = td->max_packet_count; for (x = y = 0; x != sc->sc_host_ch_max; x++) { /* check if channel is allocated */ if (sc->sc_chan_state[x].allocated != 0) continue; /* check if channel is still enabled */ if (sc->sc_chan_state[x].wait_halted != 0) continue; /* store channel number */ td->channel[y++] = x; /* check if we got all channels */ if (y == z) break; } if (y != z) { /* reset channel variable */ td->channel[0] = DWC_OTG_MAX_CHANNELS; td->channel[1] = DWC_OTG_MAX_CHANNELS; td->channel[2] = DWC_OTG_MAX_CHANNELS; /* wait a bit */ dwc_otg_enable_sof_irq(sc); return (1); /* busy - not enough channels */ } for (y = 0; y != z; y++) { x = td->channel[y]; /* set allocated */ sc->sc_chan_state[x].allocated = 1; /* set wait halted */ sc->sc_chan_state[x].wait_halted = 1; /* clear interrupts */ dwc_otg_clear_hcint(sc, x); DPRINTF("CH=%d HCCHAR=0x%08x " "HCSPLT=0x%08x\n", x, td->hcchar, td->hcsplt); /* set active channel */ sc->sc_active_rx_ep |= (1 << x); } return (0); /* allocated */ } static void dwc_otg_host_channel_free_sub(struct dwc_otg_softc *sc, struct dwc_otg_td *td, uint8_t index) { uint32_t hcchar; uint8_t x; if (td->channel[index] >= DWC_OTG_MAX_CHANNELS) return; /* already freed */ /* free channel */ x = td->channel[index]; td->channel[index] = DWC_OTG_MAX_CHANNELS; DPRINTF("CH=%d\n", x); /* * We need to let programmed host channels run till complete * else the host channel will stop functioning. */ sc->sc_chan_state[x].allocated = 0; /* ack any pending messages */ if (sc->sc_last_rx_status != 0 && GRXSTSRD_CHNUM_GET(sc->sc_last_rx_status) == x) { dwc_otg_common_rx_ack(sc); } /* clear active channel */ sc->sc_active_rx_ep &= ~(1 << x); /* check if already halted */ if (sc->sc_chan_state[x].wait_halted == 0) return; /* disable host channel */ hcchar = DWC_OTG_READ_4(sc, DOTG_HCCHAR(x)); if (hcchar & HCCHAR_CHENA) { DPRINTF("Halting channel %d\n", x); DWC_OTG_WRITE_4(sc, DOTG_HCCHAR(x), hcchar | HCCHAR_CHDIS); /* don't write HCCHAR until the channel is halted */ } else { sc->sc_chan_state[x].wait_halted = 0; } } static void dwc_otg_host_channel_free(struct dwc_otg_softc *sc, struct dwc_otg_td *td) { uint8_t x; for (x = 0; x != td->max_packet_count; x++) dwc_otg_host_channel_free_sub(sc, td, x); } static void dwc_otg_host_dump_rx(struct dwc_otg_softc *sc, struct dwc_otg_td *td) { uint8_t x; /* dump any pending messages */ if (sc->sc_last_rx_status == 0) return; for (x = 0; x != td->max_packet_count; x++) { if (td->channel[x] >= DWC_OTG_MAX_CHANNELS || td->channel[x] != GRXSTSRD_CHNUM_GET(sc->sc_last_rx_status)) continue; dwc_otg_common_rx_ack(sc); break; } } static uint8_t dwc_otg_host_setup_tx(struct dwc_otg_softc *sc, struct dwc_otg_td *td) { struct usb_device_request req __aligned(4); uint32_t hcint; uint32_t hcchar; uint8_t delta; dwc_otg_host_dump_rx(sc, td); if (td->channel[0] < DWC_OTG_MAX_CHANNELS) { hcint = sc->sc_chan_state[td->channel[0]].hcint; DPRINTF("CH=%d ST=%d HCINT=0x%08x HCCHAR=0x%08x HCTSIZ=0x%08x\n", td->channel[0], td->state, hcint, DWC_OTG_READ_4(sc, DOTG_HCCHAR(td->channel[0])), DWC_OTG_READ_4(sc, DOTG_HCTSIZ(td->channel[0]))); } else { hcint = 0; goto check_state; } if (hcint & (HCINT_RETRY | HCINT_ACK | HCINT_NYET)) { /* give success bits priority over failure bits */ } else if (hcint & HCINT_STALL) { DPRINTF("CH=%d STALL\n", td->channel[0]); td->error_stall = 1; td->error_any = 1; goto complete; } else if (hcint & HCINT_ERRORS) { DPRINTF("CH=%d ERROR\n", td->channel[0]); td->errcnt++; if (td->hcsplt != 0 || td->errcnt >= 3) { td->error_any = 1; goto complete; } } if (hcint & (HCINT_ERRORS | HCINT_RETRY | HCINT_ACK | HCINT_NYET)) { if (!(hcint & HCINT_ERRORS)) td->errcnt = 0; } check_state: switch (td->state) { case DWC_CHAN_ST_START: goto send_pkt; case DWC_CHAN_ST_WAIT_ANE: if (hcint & (HCINT_RETRY | HCINT_ERRORS)) { td->did_nak = 1; td->tt_scheduled = 0; goto send_pkt; } else if (hcint & (HCINT_ACK | HCINT_NYET)) { td->offset += td->tx_bytes; td->remainder -= td->tx_bytes; td->toggle = 1; td->tt_scheduled = 0; goto complete; } break; case DWC_CHAN_ST_WAIT_S_ANE: if (hcint & (HCINT_RETRY | HCINT_ERRORS)) { td->did_nak = 1; td->tt_scheduled = 0; goto send_pkt; } else if (hcint & (HCINT_ACK | HCINT_NYET)) { goto send_cpkt; } break; case DWC_CHAN_ST_WAIT_C_ANE: if (hcint & HCINT_NYET) { goto send_cpkt; } else if (hcint & (HCINT_RETRY | HCINT_ERRORS)) { td->did_nak = 1; td->tt_scheduled = 0; goto send_pkt; } else if (hcint & HCINT_ACK) { td->offset += td->tx_bytes; td->remainder -= td->tx_bytes; td->toggle = 1; goto complete; } break; case DWC_CHAN_ST_WAIT_C_PKT: goto send_cpkt; default: break; } goto busy; send_pkt: /* free existing channel, if any */ dwc_otg_host_channel_free(sc, td); if (sizeof(req) != td->remainder) { td->error_any = 1; goto complete; } if (td->hcsplt != 0) { delta = td->tt_start_slot - sc->sc_last_frame_num - 1; if (td->tt_scheduled == 0 || delta < DWC_OTG_TT_SLOT_MAX) { td->state = DWC_CHAN_ST_START; goto busy; } delta = sc->sc_last_frame_num - td->tt_start_slot; if (delta > 5) { /* missed it */ td->tt_scheduled = 0; td->state = DWC_CHAN_ST_START; goto busy; } } /* allocate a new channel */ if (dwc_otg_host_channel_alloc(sc, td, 1)) { td->state = DWC_CHAN_ST_START; goto busy; } if (td->hcsplt != 0) { td->hcsplt &= ~HCSPLT_COMPSPLT; td->state = DWC_CHAN_ST_WAIT_S_ANE; } else { td->state = DWC_CHAN_ST_WAIT_ANE; } /* copy out control request */ usbd_copy_out(td->pc, 0, &req, sizeof(req)); DWC_OTG_WRITE_4(sc, DOTG_HCTSIZ(td->channel[0]), (sizeof(req) << HCTSIZ_XFERSIZE_SHIFT) | (1 << HCTSIZ_PKTCNT_SHIFT) | (HCTSIZ_PID_SETUP << HCTSIZ_PID_SHIFT)); DWC_OTG_WRITE_4(sc, DOTG_HCSPLT(td->channel[0]), td->hcsplt); hcchar = td->hcchar; hcchar &= ~(HCCHAR_EPDIR_IN | HCCHAR_EPTYPE_MASK); hcchar |= UE_CONTROL << HCCHAR_EPTYPE_SHIFT; /* must enable channel before writing data to FIFO */ DWC_OTG_WRITE_4(sc, DOTG_HCCHAR(td->channel[0]), hcchar); /* transfer data into FIFO */ bus_space_write_region_4(sc->sc_io_tag, sc->sc_io_hdl, DOTG_DFIFO(td->channel[0]), (uint32_t *)&req, sizeof(req) / 4); /* wait until next slot before trying complete split */ td->tt_complete_slot = sc->sc_last_frame_num + 1; /* store number of bytes transmitted */ td->tx_bytes = sizeof(req); goto busy; send_cpkt: /* free existing channel, if any */ dwc_otg_host_channel_free(sc, td); delta = td->tt_complete_slot - sc->sc_last_frame_num - 1; if (td->tt_scheduled == 0 || delta < DWC_OTG_TT_SLOT_MAX) { td->state = DWC_CHAN_ST_WAIT_C_PKT; goto busy; } delta = sc->sc_last_frame_num - td->tt_start_slot; if (delta > DWC_OTG_TT_SLOT_MAX) { /* we missed the service interval */ if (td->ep_type != UE_ISOCHRONOUS) td->error_any = 1; goto complete; } /* allocate a new channel */ if (dwc_otg_host_channel_alloc(sc, td, 0)) { td->state = DWC_CHAN_ST_WAIT_C_PKT; goto busy; } /* wait until next slot before trying complete split */ td->tt_complete_slot = sc->sc_last_frame_num + 1; td->hcsplt |= HCSPLT_COMPSPLT; td->state = DWC_CHAN_ST_WAIT_C_ANE; DWC_OTG_WRITE_4(sc, DOTG_HCTSIZ(td->channel[0]), (HCTSIZ_PID_SETUP << HCTSIZ_PID_SHIFT)); DWC_OTG_WRITE_4(sc, DOTG_HCSPLT(td->channel[0]), td->hcsplt); hcchar = td->hcchar; hcchar &= ~(HCCHAR_EPDIR_IN | HCCHAR_EPTYPE_MASK); hcchar |= UE_CONTROL << HCCHAR_EPTYPE_SHIFT; /* must enable channel before writing data to FIFO */ DWC_OTG_WRITE_4(sc, DOTG_HCCHAR(td->channel[0]), hcchar); busy: return (1); /* busy */ complete: dwc_otg_host_channel_free(sc, td); return (0); /* complete */ } static uint8_t dwc_otg_setup_rx(struct dwc_otg_softc *sc, struct dwc_otg_td *td) { struct usb_device_request req __aligned(4); uint32_t temp; uint16_t count; /* check endpoint status */ if (sc->sc_last_rx_status == 0) goto not_complete; if (GRXSTSRD_CHNUM_GET(sc->sc_last_rx_status) != 0) goto not_complete; if ((sc->sc_last_rx_status & GRXSTSRD_PKTSTS_MASK) != GRXSTSRD_STP_DATA) { if ((sc->sc_last_rx_status & GRXSTSRD_PKTSTS_MASK) != GRXSTSRD_STP_COMPLETE || td->remainder != 0) { /* release FIFO */ dwc_otg_common_rx_ack(sc); goto not_complete; } /* release FIFO */ dwc_otg_common_rx_ack(sc); return (0); /* complete */ } if ((sc->sc_last_rx_status & GRXSTSRD_DPID_MASK) != GRXSTSRD_DPID_DATA0) { /* release FIFO */ dwc_otg_common_rx_ack(sc); goto not_complete; } DPRINTFN(5, "GRXSTSR=0x%08x\n", sc->sc_last_rx_status); /* clear did stall */ td->did_stall = 0; /* get the packet byte count */ count = GRXSTSRD_BCNT_GET(sc->sc_last_rx_status); if (count != sizeof(req)) { DPRINTFN(0, "Unsupported SETUP packet " "length, %d bytes\n", count); /* release FIFO */ dwc_otg_common_rx_ack(sc); goto not_complete; } /* read FIFO */ dwc_otg_read_fifo(sc, td->pc, 0, sizeof(req)); /* copy out control request */ usbd_copy_out(td->pc, 0, &req, sizeof(req)); td->offset = sizeof(req); td->remainder = 0; /* sneak peek the set address */ if ((req.bmRequestType == UT_WRITE_DEVICE) && (req.bRequest == UR_SET_ADDRESS)) { /* must write address before ZLP */ dwc_otg_set_address(sc, req.wValue[0] & 0x7F); } /* don't send any data by default */ DWC_OTG_WRITE_4(sc, DOTG_DIEPTSIZ(0), DIEPCTL_EPDIS); DWC_OTG_WRITE_4(sc, DOTG_DOEPTSIZ(0), DOEPCTL_EPDIS); /* reset IN endpoint buffer */ dwc_otg_tx_fifo_reset(sc, GRSTCTL_TXFIFO(0) | GRSTCTL_TXFFLSH); /* acknowledge RX status */ dwc_otg_common_rx_ack(sc); td->did_stall = 1; not_complete: /* abort any ongoing transfer, before enabling again */ if (!td->did_stall) { td->did_stall = 1; DPRINTFN(5, "stalling IN and OUT direction\n"); temp = sc->sc_out_ctl[0]; /* set stall after enabling endpoint */ DWC_OTG_WRITE_4(sc, DOTG_DOEPCTL(0), temp | DOEPCTL_STALL); temp = sc->sc_in_ctl[0]; /* set stall assuming endpoint is enabled */ DWC_OTG_WRITE_4(sc, DOTG_DIEPCTL(0), temp | DIEPCTL_STALL); } return (1); /* not complete */ } static uint8_t dwc_otg_host_rate_check_interrupt(struct dwc_otg_softc *sc, struct dwc_otg_td *td) { uint8_t delta; delta = sc->sc_tmr_val - td->tmr_val; if (delta >= 128) return (1); /* busy */ td->tmr_val = sc->sc_tmr_val + td->tmr_res; /* set toggle, if any */ if (td->set_toggle) { td->set_toggle = 0; td->toggle = 1; } return (0); } static uint8_t dwc_otg_host_rate_check(struct dwc_otg_softc *sc, struct dwc_otg_td *td) { uint8_t frame_num = (uint8_t)sc->sc_last_frame_num; if (td->ep_type == UE_ISOCHRONOUS) { /* non TT isochronous traffic */ if (frame_num & (td->tmr_res - 1)) goto busy; if ((frame_num ^ td->tmr_val) & td->tmr_res) goto busy; td->tmr_val = td->tmr_res + sc->sc_last_frame_num; td->toggle = 0; return (0); } else if (td->ep_type == UE_INTERRUPT) { if (!td->tt_scheduled) goto busy; td->tt_scheduled = 0; return (0); } else if (td->did_nak != 0) { /* check if we should pause sending queries for 125us */ if (td->tmr_res == frame_num) { /* wait a bit */ dwc_otg_enable_sof_irq(sc); goto busy; } } else if (td->set_toggle) { td->set_toggle = 0; td->toggle = 1; } /* query for data one more time */ td->tmr_res = frame_num; td->did_nak = 0; return (0); busy: return (1); } static uint8_t dwc_otg_host_data_rx_sub(struct dwc_otg_softc *sc, struct dwc_otg_td *td, uint8_t channel) { uint32_t count; /* check endpoint status */ if (sc->sc_last_rx_status == 0) goto busy; if (channel >= DWC_OTG_MAX_CHANNELS) goto busy; if (GRXSTSRD_CHNUM_GET(sc->sc_last_rx_status) != channel) goto busy; switch (sc->sc_last_rx_status & GRXSTSRD_PKTSTS_MASK) { case GRXSTSRH_IN_DATA: DPRINTF("DATA ST=%d STATUS=0x%08x\n", (int)td->state, (int)sc->sc_last_rx_status); if (sc->sc_chan_state[channel].hcint & HCINT_SOFTWARE_ONLY) { /* * When using SPLIT transactions on interrupt * endpoints, sometimes data occurs twice. */ DPRINTF("Data already received\n"); break; } /* get the packet byte count */ count = GRXSTSRD_BCNT_GET(sc->sc_last_rx_status); /* check for ISOCHRONOUS endpoint */ if (td->ep_type == UE_ISOCHRONOUS) { if ((sc->sc_last_rx_status & GRXSTSRD_DPID_MASK) != GRXSTSRD_DPID_DATA0) { /* more data to be received */ td->tt_xactpos = HCSPLT_XACTPOS_MIDDLE; } else { /* all data received */ td->tt_xactpos = HCSPLT_XACTPOS_BEGIN; /* verify the packet byte count */ if (count != td->remainder) { /* we have a short packet */ td->short_pkt = 1; td->got_short = 1; } } } else { /* verify the packet byte count */ if (count != td->max_packet_size) { if (count < td->max_packet_size) { /* we have a short packet */ td->short_pkt = 1; td->got_short = 1; } else { /* invalid USB packet */ td->error_any = 1; /* release FIFO */ dwc_otg_common_rx_ack(sc); goto complete; } } td->toggle ^= 1; td->tt_scheduled = 0; } /* verify the packet byte count */ if (count > td->remainder) { /* invalid USB packet */ td->error_any = 1; /* release FIFO */ dwc_otg_common_rx_ack(sc); goto complete; } /* read data from FIFO */ dwc_otg_read_fifo(sc, td->pc, td->offset, count); td->remainder -= count; td->offset += count; sc->sc_chan_state[channel].hcint |= HCINT_SOFTWARE_ONLY; break; default: break; } /* release FIFO */ dwc_otg_common_rx_ack(sc); busy: return (0); complete: return (1); } static uint8_t dwc_otg_host_data_rx(struct dwc_otg_softc *sc, struct dwc_otg_td *td) { uint32_t hcint = 0; uint32_t hcchar; uint8_t delta; uint8_t channel; uint8_t x; for (x = 0; x != td->max_packet_count; x++) { channel = td->channel[x]; if (channel >= DWC_OTG_MAX_CHANNELS) continue; hcint |= sc->sc_chan_state[channel].hcint; DPRINTF("CH=%d ST=%d HCINT=0x%08x HCCHAR=0x%08x HCTSIZ=0x%08x\n", channel, td->state, hcint, DWC_OTG_READ_4(sc, DOTG_HCCHAR(channel)), DWC_OTG_READ_4(sc, DOTG_HCTSIZ(channel))); /* check interrupt bits */ if (hcint & (HCINT_RETRY | HCINT_ACK | HCINT_NYET)) { /* give success bits priority over failure bits */ } else if (hcint & HCINT_STALL) { DPRINTF("CH=%d STALL\n", channel); td->error_stall = 1; td->error_any = 1; goto complete; } else if (hcint & HCINT_ERRORS) { DPRINTF("CH=%d ERROR\n", channel); td->errcnt++; if (td->hcsplt != 0 || td->errcnt >= 3) { if (td->ep_type != UE_ISOCHRONOUS) { td->error_any = 1; goto complete; } } } /* check channels for data, if any */ if (dwc_otg_host_data_rx_sub(sc, td, channel)) goto complete; /* refresh interrupt status */ hcint |= sc->sc_chan_state[channel].hcint; if (hcint & (HCINT_ERRORS | HCINT_RETRY | HCINT_ACK | HCINT_NYET)) { if (!(hcint & HCINT_ERRORS)) td->errcnt = 0; } } switch (td->state) { case DWC_CHAN_ST_START: if (td->hcsplt != 0) goto receive_spkt; else goto receive_pkt; case DWC_CHAN_ST_WAIT_ANE: if (hcint & (HCINT_RETRY | HCINT_ERRORS)) { if (td->ep_type == UE_INTERRUPT) { /* * The USB specification does not * mandate a particular data toggle * value for USB INTERRUPT * transfers. Switch the data toggle * value to receive the packet * correctly: */ if (hcint & HCINT_DATATGLERR) { DPRINTF("Retrying packet due to " "data toggle error\n"); td->toggle ^= 1; goto receive_pkt; } } else if (td->ep_type == UE_ISOCHRONOUS) { goto complete; } td->did_nak = 1; td->tt_scheduled = 0; if (td->hcsplt != 0) goto receive_spkt; else goto receive_pkt; } else if (hcint & HCINT_NYET) { if (td->hcsplt != 0) { /* try again */ goto receive_pkt; } else { /* not a valid token for IN endpoints */ td->error_any = 1; goto complete; } } else if (hcint & HCINT_ACK) { /* wait for data - ACK arrived first */ if (!(hcint & HCINT_SOFTWARE_ONLY)) goto busy; if (td->ep_type == UE_ISOCHRONOUS) { /* check if we are complete */ if (td->tt_xactpos == HCSPLT_XACTPOS_BEGIN) { goto complete; + } else if (td->hcsplt != 0) { + goto receive_pkt; } else { /* get more packets */ goto busy; } } else { /* check if we are complete */ if ((td->remainder == 0) || (td->got_short != 0)) { if (td->short_pkt) goto complete; /* * Else need to receive a zero length * packet. */ } td->tt_scheduled = 0; td->did_nak = 0; if (td->hcsplt != 0) goto receive_spkt; else goto receive_pkt; } } break; case DWC_CHAN_ST_WAIT_S_ANE: /* * NOTE: The DWC OTG hardware provides a fake ACK in * case of interrupt and isochronous transfers: */ if (hcint & (HCINT_RETRY | HCINT_ERRORS)) { td->did_nak = 1; td->tt_scheduled = 0; goto receive_spkt; } else if (hcint & HCINT_NYET) { td->tt_scheduled = 0; goto receive_spkt; } else if (hcint & HCINT_ACK) { td->did_nak = 0; goto receive_pkt; } break; case DWC_CHAN_ST_WAIT_C_PKT: goto receive_pkt; default: break; } goto busy; receive_pkt: /* free existing channel, if any */ dwc_otg_host_channel_free(sc, td); if (td->hcsplt != 0) { delta = td->tt_complete_slot - sc->sc_last_frame_num - 1; if (td->tt_scheduled == 0 || delta < DWC_OTG_TT_SLOT_MAX) { - td->state = DWC_CHAN_ST_WAIT_C_PKT; - goto busy; + if (td->ep_type != UE_ISOCHRONOUS) { + td->state = DWC_CHAN_ST_WAIT_C_PKT; + goto busy; + } } delta = sc->sc_last_frame_num - td->tt_start_slot; if (delta > DWC_OTG_TT_SLOT_MAX) { if (td->ep_type != UE_ISOCHRONOUS) { /* we missed the service interval */ td->error_any = 1; } goto complete; } /* complete split */ td->hcsplt |= HCSPLT_COMPSPLT; } else if (dwc_otg_host_rate_check(sc, td)) { td->state = DWC_CHAN_ST_WAIT_C_PKT; goto busy; } /* allocate a new channel */ if (dwc_otg_host_channel_alloc(sc, td, 0)) { td->state = DWC_CHAN_ST_WAIT_C_PKT; goto busy; } /* set toggle, if any */ if (td->set_toggle) { td->set_toggle = 0; td->toggle = 1; } td->state = DWC_CHAN_ST_WAIT_ANE; for (x = 0; x != td->max_packet_count; x++) { channel = td->channel[x]; /* receive one packet */ DWC_OTG_WRITE_4(sc, DOTG_HCTSIZ(channel), (td->max_packet_size << HCTSIZ_XFERSIZE_SHIFT) | (1 << HCTSIZ_PKTCNT_SHIFT) | (td->toggle ? (HCTSIZ_PID_DATA1 << HCTSIZ_PID_SHIFT) : (HCTSIZ_PID_DATA0 << HCTSIZ_PID_SHIFT))); DWC_OTG_WRITE_4(sc, DOTG_HCSPLT(channel), td->hcsplt); hcchar = td->hcchar; hcchar |= HCCHAR_EPDIR_IN; - /* receive complete split ASAP */ - if ((sc->sc_last_frame_num & 1) != 0 && - td->ep_type == UE_ISOCHRONOUS) - hcchar |= HCCHAR_ODDFRM; - else + if (td->ep_type == UE_ISOCHRONOUS) { + if (td->hcsplt != 0) { + /* continously buffer */ + if (sc->sc_last_frame_num & 1) + hcchar &= ~HCCHAR_ODDFRM; + else + hcchar |= HCCHAR_ODDFRM; + } else { + /* multi buffer, if any */ + if (sc->sc_last_frame_num & 1) + hcchar |= HCCHAR_ODDFRM; + else + hcchar &= ~HCCHAR_ODDFRM; + } + } else { hcchar &= ~HCCHAR_ODDFRM; + } /* must enable channel before data can be received */ DWC_OTG_WRITE_4(sc, DOTG_HCCHAR(channel), hcchar); } /* wait until next slot before trying complete split */ td->tt_complete_slot = sc->sc_last_frame_num + 1; goto busy; receive_spkt: /* free existing channel(s), if any */ dwc_otg_host_channel_free(sc, td); delta = td->tt_start_slot - sc->sc_last_frame_num - 1; if (td->tt_scheduled == 0 || delta < DWC_OTG_TT_SLOT_MAX) { td->state = DWC_CHAN_ST_START; goto busy; } delta = sc->sc_last_frame_num - td->tt_start_slot; if (delta > 5) { /* missed it */ td->tt_scheduled = 0; td->state = DWC_CHAN_ST_START; goto busy; } /* allocate a new channel */ if (dwc_otg_host_channel_alloc(sc, td, 0)) { td->state = DWC_CHAN_ST_START; goto busy; } channel = td->channel[0]; td->hcsplt &= ~HCSPLT_COMPSPLT; td->state = DWC_CHAN_ST_WAIT_S_ANE; /* receive one packet */ DWC_OTG_WRITE_4(sc, DOTG_HCTSIZ(channel), (HCTSIZ_PID_DATA0 << HCTSIZ_PID_SHIFT)); DWC_OTG_WRITE_4(sc, DOTG_HCSPLT(channel), td->hcsplt); /* send after next SOF event */ if ((sc->sc_last_frame_num & 1) == 0 && td->ep_type == UE_ISOCHRONOUS) td->hcchar |= HCCHAR_ODDFRM; else td->hcchar &= ~HCCHAR_ODDFRM; hcchar = td->hcchar; hcchar |= HCCHAR_EPDIR_IN; /* wait until next slot before trying complete split */ td->tt_complete_slot = sc->sc_last_frame_num + 1; /* must enable channel before data can be received */ DWC_OTG_WRITE_4(sc, DOTG_HCCHAR(channel), hcchar); busy: return (1); /* busy */ complete: dwc_otg_host_channel_free(sc, td); return (0); /* complete */ } static uint8_t dwc_otg_data_rx(struct dwc_otg_softc *sc, struct dwc_otg_td *td) { uint32_t temp; uint16_t count; uint8_t got_short; got_short = 0; /* check endpoint status */ if (sc->sc_last_rx_status == 0) goto not_complete; if (GRXSTSRD_CHNUM_GET(sc->sc_last_rx_status) != td->ep_no) goto not_complete; /* check for SETUP packet */ if ((sc->sc_last_rx_status & GRXSTSRD_PKTSTS_MASK) == GRXSTSRD_STP_DATA || (sc->sc_last_rx_status & GRXSTSRD_PKTSTS_MASK) == GRXSTSRD_STP_COMPLETE) { if (td->remainder == 0) { /* * We are actually complete and have * received the next SETUP */ DPRINTFN(5, "faking complete\n"); return (0); /* complete */ } /* * USB Host Aborted the transfer. */ td->error_any = 1; return (0); /* complete */ } if ((sc->sc_last_rx_status & GRXSTSRD_PKTSTS_MASK) != GRXSTSRD_OUT_DATA) { /* release FIFO */ dwc_otg_common_rx_ack(sc); goto not_complete; } /* get the packet byte count */ count = GRXSTSRD_BCNT_GET(sc->sc_last_rx_status); /* verify the packet byte count */ if (count != td->max_packet_size) { if (count < td->max_packet_size) { /* we have a short packet */ td->short_pkt = 1; got_short = 1; } else { /* invalid USB packet */ td->error_any = 1; /* release FIFO */ dwc_otg_common_rx_ack(sc); return (0); /* we are complete */ } } /* verify the packet byte count */ if (count > td->remainder) { /* invalid USB packet */ td->error_any = 1; /* release FIFO */ dwc_otg_common_rx_ack(sc); return (0); /* we are complete */ } /* read data from FIFO */ dwc_otg_read_fifo(sc, td->pc, td->offset, count); td->remainder -= count; td->offset += count; /* release FIFO */ dwc_otg_common_rx_ack(sc); temp = sc->sc_out_ctl[td->ep_no]; /* check for isochronous mode */ if ((temp & DIEPCTL_EPTYPE_MASK) == (DIEPCTL_EPTYPE_ISOC << DIEPCTL_EPTYPE_SHIFT)) { /* toggle odd or even frame bit */ if (temp & DIEPCTL_SETD1PID) { temp &= ~DIEPCTL_SETD1PID; temp |= DIEPCTL_SETD0PID; } else { temp &= ~DIEPCTL_SETD0PID; temp |= DIEPCTL_SETD1PID; } sc->sc_out_ctl[td->ep_no] = temp; } /* check if we are complete */ if ((td->remainder == 0) || got_short) { if (td->short_pkt) { /* we are complete */ return (0); } /* else need to receive a zero length packet */ } not_complete: /* enable SETUP and transfer complete interrupt */ if (td->ep_no == 0) { DWC_OTG_WRITE_4(sc, DOTG_DOEPTSIZ(0), DXEPTSIZ_SET_MULTI(3) | DXEPTSIZ_SET_NPKT(1) | DXEPTSIZ_SET_NBYTES(td->max_packet_size)); } else { /* allow reception of multiple packets */ DWC_OTG_WRITE_4(sc, DOTG_DOEPTSIZ(td->ep_no), DXEPTSIZ_SET_MULTI(1) | DXEPTSIZ_SET_NPKT(4) | DXEPTSIZ_SET_NBYTES(4 * ((td->max_packet_size + 3) & ~3))); } temp = sc->sc_out_ctl[td->ep_no]; DWC_OTG_WRITE_4(sc, DOTG_DOEPCTL(td->ep_no), temp | DOEPCTL_EPENA | DOEPCTL_CNAK); return (1); /* not complete */ } static uint8_t dwc_otg_host_data_tx(struct dwc_otg_softc *sc, struct dwc_otg_td *td) { uint32_t count; uint32_t hcint; uint32_t hcchar; uint8_t delta; uint8_t channel; uint8_t x; dwc_otg_host_dump_rx(sc, td); /* check that last channel is complete */ channel = td->channel[td->npkt]; if (channel < DWC_OTG_MAX_CHANNELS) { hcint = sc->sc_chan_state[channel].hcint; DPRINTF("CH=%d ST=%d HCINT=0x%08x HCCHAR=0x%08x HCTSIZ=0x%08x\n", channel, td->state, hcint, DWC_OTG_READ_4(sc, DOTG_HCCHAR(channel)), DWC_OTG_READ_4(sc, DOTG_HCTSIZ(channel))); if (hcint & (HCINT_RETRY | HCINT_ACK | HCINT_NYET)) { /* give success bits priority over failure bits */ } else if (hcint & HCINT_STALL) { DPRINTF("CH=%d STALL\n", channel); td->error_stall = 1; td->error_any = 1; goto complete; } else if (hcint & HCINT_ERRORS) { DPRINTF("CH=%d ERROR\n", channel); td->errcnt++; if (td->hcsplt != 0 || td->errcnt >= 3) { td->error_any = 1; goto complete; } } if (hcint & (HCINT_ERRORS | HCINT_RETRY | HCINT_ACK | HCINT_NYET)) { if (!(hcint & HCINT_ERRORS)) td->errcnt = 0; } } else { hcint = 0; } switch (td->state) { case DWC_CHAN_ST_START: goto send_pkt; case DWC_CHAN_ST_WAIT_ANE: if (hcint & (HCINT_RETRY | HCINT_ERRORS)) { td->did_nak = 1; td->tt_scheduled = 0; goto send_pkt; } else if (hcint & (HCINT_ACK | HCINT_NYET)) { td->offset += td->tx_bytes; td->remainder -= td->tx_bytes; td->toggle ^= 1; /* check if next response will be a NAK */ if (hcint & HCINT_NYET) td->did_nak = 1; else td->did_nak = 0; td->tt_scheduled = 0; /* check remainder */ if (td->remainder == 0) { if (td->short_pkt) goto complete; /* * Else we need to transmit a short * packet: */ } goto send_pkt; } break; case DWC_CHAN_ST_WAIT_S_ANE: if (hcint & (HCINT_RETRY | HCINT_ERRORS)) { td->did_nak = 1; td->tt_scheduled = 0; goto send_pkt; } else if (hcint & (HCINT_ACK | HCINT_NYET)) { td->did_nak = 0; goto send_cpkt; } break; case DWC_CHAN_ST_WAIT_C_ANE: if (hcint & HCINT_NYET) { goto send_cpkt; } else if (hcint & (HCINT_RETRY | HCINT_ERRORS)) { td->did_nak = 1; td->tt_scheduled = 0; goto send_pkt; } else if (hcint & HCINT_ACK) { td->offset += td->tx_bytes; td->remainder -= td->tx_bytes; td->toggle ^= 1; td->did_nak = 0; td->tt_scheduled = 0; /* check remainder */ if (td->remainder == 0) { if (td->short_pkt) goto complete; /* else we need to transmit a short packet */ } goto send_pkt; } break; case DWC_CHAN_ST_WAIT_C_PKT: goto send_cpkt; case DWC_CHAN_ST_TX_WAIT_ISOC: /* Check if ISOCHRONOUS OUT traffic is complete */ if ((hcint & HCINT_HCH_DONE_MASK) == 0) break; td->offset += td->tx_bytes; td->remainder -= td->tx_bytes; goto complete; default: break; } goto busy; send_pkt: /* free existing channel(s), if any */ dwc_otg_host_channel_free(sc, td); if (td->hcsplt != 0) { delta = td->tt_start_slot - sc->sc_last_frame_num - 1; if (td->tt_scheduled == 0 || delta < DWC_OTG_TT_SLOT_MAX) { td->state = DWC_CHAN_ST_START; goto busy; } delta = sc->sc_last_frame_num - td->tt_start_slot; if (delta > 5) { /* missed it */ td->tt_scheduled = 0; td->state = DWC_CHAN_ST_START; goto busy; } } else if (dwc_otg_host_rate_check(sc, td)) { td->state = DWC_CHAN_ST_START; goto busy; } /* allocate a new channel */ if (dwc_otg_host_channel_alloc(sc, td, 1)) { td->state = DWC_CHAN_ST_START; goto busy; } /* set toggle, if any */ if (td->set_toggle) { td->set_toggle = 0; td->toggle = 1; } if (td->ep_type == UE_ISOCHRONOUS) { /* ISOCHRONOUS OUT transfers don't have any ACKs */ td->state = DWC_CHAN_ST_TX_WAIT_ISOC; td->hcsplt &= ~HCSPLT_COMPSPLT; if (td->hcsplt != 0) { /* get maximum transfer length */ count = td->remainder; if (count > HCSPLT_XACTLEN_BURST) { DPRINTF("TT overflow\n"); td->error_any = 1; goto complete; } /* Update transaction position */ td->hcsplt &= ~HCSPLT_XACTPOS_MASK; td->hcsplt |= (HCSPLT_XACTPOS_ALL << HCSPLT_XACTPOS_SHIFT); } } else if (td->hcsplt != 0) { td->hcsplt &= ~HCSPLT_COMPSPLT; /* Wait for ACK/NAK/ERR from TT */ td->state = DWC_CHAN_ST_WAIT_S_ANE; } else { /* Wait for ACK/NAK/STALL from device */ td->state = DWC_CHAN_ST_WAIT_ANE; } td->tx_bytes = 0; for (x = 0; x != td->max_packet_count; x++) { uint32_t rem_bytes; channel = td->channel[x]; /* send one packet at a time */ count = td->max_packet_size; rem_bytes = td->remainder - td->tx_bytes; if (rem_bytes < count) { /* we have a short packet */ td->short_pkt = 1; count = rem_bytes; } if (count == rem_bytes) { /* last packet */ switch (x) { case 0: DWC_OTG_WRITE_4(sc, DOTG_HCTSIZ(channel), (count << HCTSIZ_XFERSIZE_SHIFT) | (1 << HCTSIZ_PKTCNT_SHIFT) | (td->toggle ? (HCTSIZ_PID_DATA1 << HCTSIZ_PID_SHIFT) : (HCTSIZ_PID_DATA0 << HCTSIZ_PID_SHIFT))); break; case 1: DWC_OTG_WRITE_4(sc, DOTG_HCTSIZ(channel), (count << HCTSIZ_XFERSIZE_SHIFT) | (1 << HCTSIZ_PKTCNT_SHIFT) | (HCTSIZ_PID_DATA1 << HCTSIZ_PID_SHIFT)); break; default: DWC_OTG_WRITE_4(sc, DOTG_HCTSIZ(channel), (count << HCTSIZ_XFERSIZE_SHIFT) | (1 << HCTSIZ_PKTCNT_SHIFT) | (HCTSIZ_PID_DATA2 << HCTSIZ_PID_SHIFT)); break; } } else if (td->ep_type == UE_ISOCHRONOUS && td->max_packet_count > 1) { /* ISOCHRONOUS multi packet */ DWC_OTG_WRITE_4(sc, DOTG_HCTSIZ(channel), (count << HCTSIZ_XFERSIZE_SHIFT) | (1 << HCTSIZ_PKTCNT_SHIFT) | (HCTSIZ_PID_MDATA << HCTSIZ_PID_SHIFT)); } else { /* TODO: HCTSIZ_DOPNG */ /* standard BULK/INTERRUPT/CONTROL packet */ DWC_OTG_WRITE_4(sc, DOTG_HCTSIZ(channel), (count << HCTSIZ_XFERSIZE_SHIFT) | (1 << HCTSIZ_PKTCNT_SHIFT) | (td->toggle ? (HCTSIZ_PID_DATA1 << HCTSIZ_PID_SHIFT) : (HCTSIZ_PID_DATA0 << HCTSIZ_PID_SHIFT))); } DWC_OTG_WRITE_4(sc, DOTG_HCSPLT(channel), td->hcsplt); hcchar = td->hcchar; hcchar &= ~HCCHAR_EPDIR_IN; /* send after next SOF event */ if ((sc->sc_last_frame_num & 1) == 0 && td->ep_type == UE_ISOCHRONOUS) hcchar |= HCCHAR_ODDFRM; else hcchar &= ~HCCHAR_ODDFRM; /* must enable before writing data to FIFO */ DWC_OTG_WRITE_4(sc, DOTG_HCCHAR(channel), hcchar); if (count != 0) { /* write data into FIFO */ dwc_otg_write_fifo(sc, td->pc, td->offset + td->tx_bytes, DOTG_DFIFO(channel), count); } /* store number of bytes transmitted */ td->tx_bytes += count; /* store last packet index */ td->npkt = x; /* check for last packet */ if (count == rem_bytes) break; } goto busy; send_cpkt: /* free existing channel, if any */ dwc_otg_host_channel_free(sc, td); delta = td->tt_complete_slot - sc->sc_last_frame_num - 1; if (td->tt_scheduled == 0 || delta < DWC_OTG_TT_SLOT_MAX) { td->state = DWC_CHAN_ST_WAIT_C_PKT; goto busy; } delta = sc->sc_last_frame_num - td->tt_start_slot; if (delta > DWC_OTG_TT_SLOT_MAX) { /* we missed the service interval */ if (td->ep_type != UE_ISOCHRONOUS) td->error_any = 1; goto complete; } /* allocate a new channel */ if (dwc_otg_host_channel_alloc(sc, td, 0)) { td->state = DWC_CHAN_ST_WAIT_C_PKT; goto busy; } channel = td->channel[0]; td->hcsplt |= HCSPLT_COMPSPLT; td->state = DWC_CHAN_ST_WAIT_C_ANE; DWC_OTG_WRITE_4(sc, DOTG_HCTSIZ(channel), (HCTSIZ_PID_DATA0 << HCTSIZ_PID_SHIFT)); DWC_OTG_WRITE_4(sc, DOTG_HCSPLT(channel), td->hcsplt); hcchar = td->hcchar; hcchar &= ~HCCHAR_EPDIR_IN; /* receive complete split ASAP */ if ((sc->sc_last_frame_num & 1) != 0 && td->ep_type == UE_ISOCHRONOUS) hcchar |= HCCHAR_ODDFRM; else hcchar &= ~HCCHAR_ODDFRM; /* must enable channel before data can be received */ DWC_OTG_WRITE_4(sc, DOTG_HCCHAR(channel), hcchar); /* wait until next slot before trying complete split */ td->tt_complete_slot = sc->sc_last_frame_num + 1; busy: return (1); /* busy */ complete: dwc_otg_host_channel_free(sc, td); return (0); /* complete */ } static uint8_t dwc_otg_data_tx(struct dwc_otg_softc *sc, struct dwc_otg_td *td) { uint32_t max_buffer; uint32_t count; uint32_t fifo_left; uint32_t mpkt; uint32_t temp; uint8_t to; to = 3; /* don't loop forever! */ max_buffer = sc->sc_hw_ep_profile[td->ep_no].max_buffer; repeat: /* check for for endpoint 0 data */ temp = sc->sc_last_rx_status; if ((td->ep_no == 0) && (temp != 0) && (GRXSTSRD_CHNUM_GET(temp) == 0)) { if ((temp & GRXSTSRD_PKTSTS_MASK) != GRXSTSRD_STP_DATA && (temp & GRXSTSRD_PKTSTS_MASK) != GRXSTSRD_STP_COMPLETE) { /* dump data - wrong direction */ dwc_otg_common_rx_ack(sc); } else { /* * The current transfer was cancelled * by the USB Host: */ td->error_any = 1; return (0); /* complete */ } } /* fill in more TX data, if possible */ if (td->tx_bytes != 0) { uint16_t cpkt; /* check if packets have been transferred */ temp = DWC_OTG_READ_4(sc, DOTG_DIEPTSIZ(td->ep_no)); /* get current packet number */ cpkt = DXEPTSIZ_GET_NPKT(temp); if (cpkt >= td->npkt) { fifo_left = 0; } else { if (max_buffer != 0) { fifo_left = (td->npkt - cpkt) * td->max_packet_size; if (fifo_left > max_buffer) fifo_left = max_buffer; } else { fifo_left = td->max_packet_size; } } count = td->tx_bytes; if (count > fifo_left) count = fifo_left; if (count != 0) { /* write data into FIFO */ dwc_otg_write_fifo(sc, td->pc, td->offset, DOTG_DFIFO(td->ep_no), count); td->tx_bytes -= count; td->remainder -= count; td->offset += count; td->npkt = cpkt; } if (td->tx_bytes != 0) goto not_complete; /* check remainder */ if (td->remainder == 0) { if (td->short_pkt) return (0); /* complete */ /* else we need to transmit a short packet */ } } if (!to--) goto not_complete; /* check if not all packets have been transferred */ temp = DWC_OTG_READ_4(sc, DOTG_DIEPTSIZ(td->ep_no)); if (DXEPTSIZ_GET_NPKT(temp) != 0) { DPRINTFN(5, "busy ep=%d npkt=%d DIEPTSIZ=0x%08x " "DIEPCTL=0x%08x\n", td->ep_no, DXEPTSIZ_GET_NPKT(temp), temp, DWC_OTG_READ_4(sc, DOTG_DIEPCTL(td->ep_no))); goto not_complete; } DPRINTFN(5, "rem=%u ep=%d\n", td->remainder, td->ep_no); /* try to optimise by sending more data */ if ((max_buffer != 0) && ((td->max_packet_size & 3) == 0)) { /* send multiple packets at the same time */ mpkt = max_buffer / td->max_packet_size; if (mpkt > 0x3FE) mpkt = 0x3FE; count = td->remainder; if (count > 0x7FFFFF) count = 0x7FFFFF - (0x7FFFFF % td->max_packet_size); td->npkt = count / td->max_packet_size; /* * NOTE: We could use 0x3FE instead of "mpkt" in the * check below to get more throughput, but then we * have a dependency towards non-generic chip features * to disable the TX-FIFO-EMPTY interrupts on a per * endpoint basis. Increase the maximum buffer size of * the IN endpoint to increase the performance. */ if (td->npkt > mpkt) { td->npkt = mpkt; count = td->max_packet_size * mpkt; } else if ((count == 0) || (count % td->max_packet_size)) { /* we are transmitting a short packet */ td->npkt++; td->short_pkt = 1; } } else { /* send one packet at a time */ mpkt = 1; count = td->max_packet_size; if (td->remainder < count) { /* we have a short packet */ td->short_pkt = 1; count = td->remainder; } td->npkt = 1; } DWC_OTG_WRITE_4(sc, DOTG_DIEPTSIZ(td->ep_no), DXEPTSIZ_SET_MULTI(1) | DXEPTSIZ_SET_NPKT(td->npkt) | DXEPTSIZ_SET_NBYTES(count)); /* make room for buffering */ td->npkt += mpkt; temp = sc->sc_in_ctl[td->ep_no]; /* check for isochronous mode */ if ((temp & DIEPCTL_EPTYPE_MASK) == (DIEPCTL_EPTYPE_ISOC << DIEPCTL_EPTYPE_SHIFT)) { /* toggle odd or even frame bit */ if (temp & DIEPCTL_SETD1PID) { temp &= ~DIEPCTL_SETD1PID; temp |= DIEPCTL_SETD0PID; } else { temp &= ~DIEPCTL_SETD0PID; temp |= DIEPCTL_SETD1PID; } sc->sc_in_ctl[td->ep_no] = temp; } /* must enable before writing data to FIFO */ DWC_OTG_WRITE_4(sc, DOTG_DIEPCTL(td->ep_no), temp | DIEPCTL_EPENA | DIEPCTL_CNAK); td->tx_bytes = count; /* check remainder */ if (td->tx_bytes == 0 && td->remainder == 0) { if (td->short_pkt) return (0); /* complete */ /* else we need to transmit a short packet */ } goto repeat; not_complete: return (1); /* not complete */ } static uint8_t dwc_otg_data_tx_sync(struct dwc_otg_softc *sc, struct dwc_otg_td *td) { uint32_t temp; /* * If all packets are transferred we are complete: */ temp = DWC_OTG_READ_4(sc, DOTG_DIEPTSIZ(td->ep_no)); /* check that all packets have been transferred */ if (DXEPTSIZ_GET_NPKT(temp) != 0) { DPRINTFN(5, "busy ep=%d\n", td->ep_no); goto not_complete; } return (0); not_complete: /* we only want to know if there is a SETUP packet or free IN packet */ temp = sc->sc_last_rx_status; if ((td->ep_no == 0) && (temp != 0) && (GRXSTSRD_CHNUM_GET(temp) == 0)) { if ((temp & GRXSTSRD_PKTSTS_MASK) == GRXSTSRD_STP_DATA || (temp & GRXSTSRD_PKTSTS_MASK) == GRXSTSRD_STP_COMPLETE) { DPRINTFN(5, "faking complete\n"); /* * Race condition: We are complete! */ return (0); } else { /* dump data - wrong direction */ dwc_otg_common_rx_ack(sc); } } return (1); /* not complete */ } static void dwc_otg_xfer_do_fifo(struct dwc_otg_softc *sc, struct usb_xfer *xfer) { struct dwc_otg_td *td; uint8_t toggle; uint8_t tmr_val; uint8_t tmr_res; DPRINTFN(9, "\n"); td = xfer->td_transfer_cache; if (td == NULL) return; while (1) { if ((td->func) (sc, td)) { /* operation in progress */ break; } if (((void *)td) == xfer->td_transfer_last) { goto done; } if (td->error_any) { goto done; } else if (td->remainder > 0) { /* * We had a short transfer. If there is no alternate * next, stop processing ! */ if (!td->alt_next) goto done; } /* * Fetch the next transfer descriptor and transfer * some flags to the next transfer descriptor */ tmr_res = td->tmr_res; tmr_val = td->tmr_val; toggle = td->toggle; td = td->obj_next; xfer->td_transfer_cache = td; td->toggle = toggle; /* transfer toggle */ td->tmr_res = tmr_res; td->tmr_val = tmr_val; } return; done: xfer->td_transfer_cache = NULL; sc->sc_xfer_complete = 1; } static uint8_t dwc_otg_xfer_do_complete_locked(struct dwc_otg_softc *sc, struct usb_xfer *xfer) { struct dwc_otg_td *td; DPRINTFN(9, "\n"); td = xfer->td_transfer_cache; if (td == NULL) { /* compute all actual lengths */ dwc_otg_standard_done(xfer); return (1); } return (0); } static void dwc_otg_timer(void *_sc) { struct dwc_otg_softc *sc = _sc; USB_BUS_LOCK_ASSERT(&sc->sc_bus, MA_OWNED); DPRINTF("\n"); USB_BUS_SPIN_LOCK(&sc->sc_bus); /* increment timer value */ sc->sc_tmr_val++; /* enable SOF interrupt, which will poll jobs */ dwc_otg_enable_sof_irq(sc); USB_BUS_SPIN_UNLOCK(&sc->sc_bus); if (sc->sc_timer_active) { /* restart timer */ usb_callout_reset(&sc->sc_timer, hz / (1000 / DWC_OTG_HOST_TIMER_RATE), &dwc_otg_timer, sc); } } static void dwc_otg_timer_start(struct dwc_otg_softc *sc) { if (sc->sc_timer_active != 0) return; sc->sc_timer_active = 1; /* restart timer */ usb_callout_reset(&sc->sc_timer, hz / (1000 / DWC_OTG_HOST_TIMER_RATE), &dwc_otg_timer, sc); } static void dwc_otg_timer_stop(struct dwc_otg_softc *sc) { if (sc->sc_timer_active == 0) return; sc->sc_timer_active = 0; /* stop timer */ usb_callout_stop(&sc->sc_timer); } static uint16_t dwc_otg_compute_isoc_rx_tt_slot(struct dwc_otg_tt_info *pinfo) { if (pinfo->slot_index < DWC_OTG_TT_SLOT_MAX) pinfo->slot_index++; return (pinfo->slot_index); } static uint8_t dwc_otg_update_host_transfer_schedule_locked(struct dwc_otg_softc *sc) { TAILQ_HEAD(, usb_xfer) head; struct usb_xfer *xfer; struct usb_xfer *xfer_next; struct dwc_otg_td *td; uint16_t temp; uint16_t slot; temp = DWC_OTG_READ_4(sc, DOTG_HFNUM) & DWC_OTG_FRAME_MASK; if (sc->sc_last_frame_num == temp) return (0); sc->sc_last_frame_num = temp; TAILQ_INIT(&head); if ((temp & 7) == 0) { /* reset the schedule */ memset(sc->sc_tt_info, 0, sizeof(sc->sc_tt_info)); TAILQ_FOREACH_SAFE(xfer, &sc->sc_bus.intr_q.head, wait_entry, xfer_next) { td = xfer->td_transfer_cache; if (td == NULL || td->ep_type != UE_ISOCHRONOUS) continue; /* check for IN direction */ if ((td->hcchar & HCCHAR_EPDIR_IN) != 0) continue; sc->sc_needsof = 1; if (td->hcsplt == 0 || td->tt_scheduled != 0) continue; /* compute slot */ slot = dwc_otg_compute_isoc_rx_tt_slot( sc->sc_tt_info + td->tt_index); if (slot > 3) { /* * Not enough time to get complete * split executed. */ continue; } /* Delayed start */ td->tt_start_slot = temp + slot; td->tt_scheduled = 1; TAILQ_REMOVE(&sc->sc_bus.intr_q.head, xfer, wait_entry); TAILQ_INSERT_TAIL(&head, xfer, wait_entry); } TAILQ_FOREACH_SAFE(xfer, &sc->sc_bus.intr_q.head, wait_entry, xfer_next) { td = xfer->td_transfer_cache; if (td == NULL || td->ep_type != UE_ISOCHRONOUS) continue; /* check for OUT direction */ if ((td->hcchar & HCCHAR_EPDIR_IN) == 0) continue; sc->sc_needsof = 1; if (td->hcsplt == 0 || td->tt_scheduled != 0) continue; /* Start ASAP */ td->tt_start_slot = temp; td->tt_scheduled = 1; TAILQ_REMOVE(&sc->sc_bus.intr_q.head, xfer, wait_entry); TAILQ_INSERT_TAIL(&head, xfer, wait_entry); } TAILQ_FOREACH_SAFE(xfer, &sc->sc_bus.intr_q.head, wait_entry, xfer_next) { td = xfer->td_transfer_cache; if (td == NULL || td->ep_type != UE_INTERRUPT) continue; if (td->tt_scheduled != 0) { sc->sc_needsof = 1; continue; } if (dwc_otg_host_rate_check_interrupt(sc, td)) continue; if (td->hcsplt == 0) { sc->sc_needsof = 1; td->tt_scheduled = 1; continue; } /* start ASAP */ td->tt_start_slot = temp; sc->sc_needsof = 1; td->tt_scheduled = 1; TAILQ_REMOVE(&sc->sc_bus.intr_q.head, xfer, wait_entry); TAILQ_INSERT_TAIL(&head, xfer, wait_entry); } TAILQ_FOREACH_SAFE(xfer, &sc->sc_bus.intr_q.head, wait_entry, xfer_next) { td = xfer->td_transfer_cache; if (td == NULL || td->ep_type != UE_CONTROL) { continue; } sc->sc_needsof = 1; if (td->hcsplt == 0 || td->tt_scheduled != 0) continue; /* start ASAP */ td->tt_start_slot = temp; td->tt_scheduled = 1; TAILQ_REMOVE(&sc->sc_bus.intr_q.head, xfer, wait_entry); TAILQ_INSERT_TAIL(&head, xfer, wait_entry); } } if ((temp & 7) < 6) { TAILQ_FOREACH_SAFE(xfer, &sc->sc_bus.intr_q.head, wait_entry, xfer_next) { td = xfer->td_transfer_cache; if (td == NULL || td->ep_type != UE_BULK) { continue; } sc->sc_needsof = 1; if (td->hcsplt == 0 || td->tt_scheduled != 0) continue; /* start ASAP */ td->tt_start_slot = temp; td->tt_scheduled = 1; TAILQ_REMOVE(&sc->sc_bus.intr_q.head, xfer, wait_entry); TAILQ_INSERT_TAIL(&head, xfer, wait_entry); } } /* Put TT transfers in execution order at the end */ TAILQ_CONCAT(&sc->sc_bus.intr_q.head, &head, wait_entry); /* move all TT transfers in front, keeping the current order */ TAILQ_FOREACH_SAFE(xfer, &sc->sc_bus.intr_q.head, wait_entry, xfer_next) { td = xfer->td_transfer_cache; if (td == NULL || td->hcsplt == 0) continue; TAILQ_REMOVE(&sc->sc_bus.intr_q.head, xfer, wait_entry); TAILQ_INSERT_TAIL(&head, xfer, wait_entry); } TAILQ_CONCAT(&head, &sc->sc_bus.intr_q.head, wait_entry); TAILQ_CONCAT(&sc->sc_bus.intr_q.head, &head, wait_entry); /* put non-TT non-ISOCHRONOUS transfers last */ TAILQ_FOREACH_SAFE(xfer, &sc->sc_bus.intr_q.head, wait_entry, xfer_next) { td = xfer->td_transfer_cache; if (td == NULL || td->hcsplt != 0 || td->ep_type == UE_ISOCHRONOUS) continue; TAILQ_REMOVE(&sc->sc_bus.intr_q.head, xfer, wait_entry); TAILQ_INSERT_TAIL(&head, xfer, wait_entry); } TAILQ_CONCAT(&sc->sc_bus.intr_q.head, &head, wait_entry); if ((temp & 7) == 0) { DPRINTFN(12, "SOF interrupt #%d, needsof=%d\n", (int)temp, (int)sc->sc_needsof); /* update SOF IRQ mask */ if (sc->sc_irq_mask & GINTMSK_SOFMSK) { if (sc->sc_needsof == 0) { sc->sc_irq_mask &= ~GINTMSK_SOFMSK; DWC_OTG_WRITE_4(sc, DOTG_GINTMSK, sc->sc_irq_mask); } } else { if (sc->sc_needsof != 0) { sc->sc_irq_mask |= GINTMSK_SOFMSK; DWC_OTG_WRITE_4(sc, DOTG_GINTMSK, sc->sc_irq_mask); } } /* clear need SOF flag */ sc->sc_needsof = 0; } return (1); } static void dwc_otg_interrupt_poll_locked(struct dwc_otg_softc *sc) { struct usb_xfer *xfer; uint32_t count; uint32_t temp; uint32_t haint; uint8_t got_rx_status; uint8_t x; if (sc->sc_flags.status_device_mode == 0) { /* * Update host transfer schedule, so that new * transfers can be issued: */ dwc_otg_update_host_transfer_schedule_locked(sc); } count = 0; repeat: if (++count == 16) { /* give other interrupts a chance */ DPRINTF("Yield\n"); return; } /* get all host channel interrupts */ haint = DWC_OTG_READ_4(sc, DOTG_HAINT); while (1) { x = ffs(haint) - 1; if (x >= sc->sc_host_ch_max) break; temp = DWC_OTG_READ_4(sc, DOTG_HCINT(x)); DWC_OTG_WRITE_4(sc, DOTG_HCINT(x), temp); temp &= ~HCINT_SOFTWARE_ONLY; sc->sc_chan_state[x].hcint |= temp; haint &= ~(1U << x); } if (sc->sc_last_rx_status == 0) { temp = DWC_OTG_READ_4(sc, DOTG_GINTSTS); if (temp & GINTSTS_RXFLVL) { /* pop current status */ sc->sc_last_rx_status = DWC_OTG_READ_4(sc, DOTG_GRXSTSPD); } if (sc->sc_last_rx_status != 0) { uint8_t ep_no; temp = sc->sc_last_rx_status & GRXSTSRD_PKTSTS_MASK; /* non-data messages we simply skip */ if (temp != GRXSTSRD_STP_DATA && temp != GRXSTSRD_STP_COMPLETE && temp != GRXSTSRD_OUT_DATA) { /* check for halted channel */ if (temp == GRXSTSRH_HALTED) { ep_no = GRXSTSRD_CHNUM_GET(sc->sc_last_rx_status); sc->sc_chan_state[ep_no].wait_halted = 0; DPRINTFN(5, "channel halt complete ch=%u\n", ep_no); } /* store bytes and FIFO offset */ sc->sc_current_rx_bytes = 0; sc->sc_current_rx_fifo = 0; /* acknowledge status */ dwc_otg_common_rx_ack(sc); goto repeat; } temp = GRXSTSRD_BCNT_GET( sc->sc_last_rx_status); ep_no = GRXSTSRD_CHNUM_GET( sc->sc_last_rx_status); /* store bytes and FIFO offset */ sc->sc_current_rx_bytes = (temp + 3) & ~3; sc->sc_current_rx_fifo = DOTG_DFIFO(ep_no); DPRINTF("Reading %d bytes from ep %d\n", temp, ep_no); /* check if we should dump the data */ if (!(sc->sc_active_rx_ep & (1U << ep_no))) { dwc_otg_common_rx_ack(sc); goto repeat; } got_rx_status = 1; DPRINTFN(5, "RX status = 0x%08x: ch=%d pid=%d bytes=%d sts=%d\n", sc->sc_last_rx_status, ep_no, (sc->sc_last_rx_status >> 15) & 3, GRXSTSRD_BCNT_GET(sc->sc_last_rx_status), (sc->sc_last_rx_status >> 17) & 15); } else { got_rx_status = 0; } } else { uint8_t ep_no; ep_no = GRXSTSRD_CHNUM_GET( sc->sc_last_rx_status); /* check if we should dump the data */ if (!(sc->sc_active_rx_ep & (1U << ep_no))) { dwc_otg_common_rx_ack(sc); goto repeat; } got_rx_status = 1; } /* execute FIFOs */ TAILQ_FOREACH(xfer, &sc->sc_bus.intr_q.head, wait_entry) dwc_otg_xfer_do_fifo(sc, xfer); if (got_rx_status) { /* check if data was consumed */ if (sc->sc_last_rx_status == 0) goto repeat; /* disable RX FIFO level interrupt */ sc->sc_irq_mask &= ~GINTMSK_RXFLVLMSK; DWC_OTG_WRITE_4(sc, DOTG_GINTMSK, sc->sc_irq_mask); } } static void dwc_otg_interrupt_complete_locked(struct dwc_otg_softc *sc) { struct usb_xfer *xfer; repeat: /* scan for completion events */ TAILQ_FOREACH(xfer, &sc->sc_bus.intr_q.head, wait_entry) { if (dwc_otg_xfer_do_complete_locked(sc, xfer)) goto repeat; } } static void dwc_otg_vbus_interrupt(struct dwc_otg_softc *sc, uint8_t is_on) { DPRINTFN(5, "vbus = %u\n", is_on); /* * If the USB host mode is forced, then assume VBUS is always * present else rely on the input to this function: */ if ((is_on != 0) || (sc->sc_mode == DWC_MODE_HOST)) { if (!sc->sc_flags.status_vbus) { sc->sc_flags.status_vbus = 1; /* complete root HUB interrupt endpoint */ dwc_otg_root_intr(sc); } } else { if (sc->sc_flags.status_vbus) { sc->sc_flags.status_vbus = 0; sc->sc_flags.status_bus_reset = 0; sc->sc_flags.status_suspend = 0; sc->sc_flags.change_suspend = 0; sc->sc_flags.change_connect = 1; /* complete root HUB interrupt endpoint */ dwc_otg_root_intr(sc); } } } int dwc_otg_filter_interrupt(void *arg) { struct dwc_otg_softc *sc = arg; int retval = FILTER_HANDLED; uint32_t status; USB_BUS_SPIN_LOCK(&sc->sc_bus); /* read and clear interrupt status */ status = DWC_OTG_READ_4(sc, DOTG_GINTSTS); /* clear interrupts we are handling here */ DWC_OTG_WRITE_4(sc, DOTG_GINTSTS, status & ~DWC_OTG_MSK_GINT_THREAD_IRQ); /* check for USB state change interrupts */ if ((status & DWC_OTG_MSK_GINT_THREAD_IRQ) != 0) retval = FILTER_SCHEDULE_THREAD; /* clear FIFO empty interrupts */ if (status & sc->sc_irq_mask & (GINTSTS_PTXFEMP | GINTSTS_NPTXFEMP)) { sc->sc_irq_mask &= ~(GINTSTS_PTXFEMP | GINTSTS_NPTXFEMP); DWC_OTG_WRITE_4(sc, DOTG_GINTMSK, sc->sc_irq_mask); } /* clear all IN endpoint interrupts */ if (status & GINTSTS_IEPINT) { uint32_t temp; uint8_t x; for (x = 0; x != sc->sc_dev_in_ep_max; x++) { temp = DWC_OTG_READ_4(sc, DOTG_DIEPINT(x)); /* * NOTE: Need to clear all interrupt bits, * because some appears to be unmaskable and * can cause an interrupt loop: */ if (temp != 0) DWC_OTG_WRITE_4(sc, DOTG_DIEPINT(x), temp); } } /* poll FIFOs, if any */ dwc_otg_interrupt_poll_locked(sc); if (sc->sc_xfer_complete != 0) retval = FILTER_SCHEDULE_THREAD; USB_BUS_SPIN_UNLOCK(&sc->sc_bus); return (retval); } void dwc_otg_interrupt(void *arg) { struct dwc_otg_softc *sc = arg; uint32_t status; USB_BUS_LOCK(&sc->sc_bus); USB_BUS_SPIN_LOCK(&sc->sc_bus); /* read and clear interrupt status */ status = DWC_OTG_READ_4(sc, DOTG_GINTSTS); /* clear interrupts we are handling here */ DWC_OTG_WRITE_4(sc, DOTG_GINTSTS, status & DWC_OTG_MSK_GINT_THREAD_IRQ); DPRINTFN(14, "GINTSTS=0x%08x HAINT=0x%08x HFNUM=0x%08x\n", status, DWC_OTG_READ_4(sc, DOTG_HAINT), DWC_OTG_READ_4(sc, DOTG_HFNUM)); if (status & GINTSTS_USBRST) { /* set correct state */ sc->sc_flags.status_device_mode = 1; sc->sc_flags.status_bus_reset = 0; sc->sc_flags.status_suspend = 0; sc->sc_flags.change_suspend = 0; sc->sc_flags.change_connect = 1; /* Disable SOF interrupt */ sc->sc_irq_mask &= ~GINTMSK_SOFMSK; DWC_OTG_WRITE_4(sc, DOTG_GINTMSK, sc->sc_irq_mask); /* complete root HUB interrupt endpoint */ dwc_otg_root_intr(sc); } /* check for any bus state change interrupts */ if (status & GINTSTS_ENUMDONE) { uint32_t temp; DPRINTFN(5, "end of reset\n"); /* set correct state */ sc->sc_flags.status_device_mode = 1; sc->sc_flags.status_bus_reset = 1; sc->sc_flags.status_suspend = 0; sc->sc_flags.change_suspend = 0; sc->sc_flags.change_connect = 1; sc->sc_flags.status_low_speed = 0; sc->sc_flags.port_enabled = 1; /* reset FIFOs */ (void) dwc_otg_init_fifo(sc, DWC_MODE_DEVICE); /* reset function address */ dwc_otg_set_address(sc, 0); /* figure out enumeration speed */ temp = DWC_OTG_READ_4(sc, DOTG_DSTS); if (DSTS_ENUMSPD_GET(temp) == DSTS_ENUMSPD_HI) sc->sc_flags.status_high_speed = 1; else sc->sc_flags.status_high_speed = 0; /* * Disable resume and SOF interrupt, and enable * suspend and RX frame interrupt: */ sc->sc_irq_mask &= ~(GINTMSK_WKUPINTMSK | GINTMSK_SOFMSK); sc->sc_irq_mask |= GINTMSK_USBSUSPMSK; DWC_OTG_WRITE_4(sc, DOTG_GINTMSK, sc->sc_irq_mask); /* complete root HUB interrupt endpoint */ dwc_otg_root_intr(sc); } if (status & GINTSTS_PRTINT) { uint32_t hprt; hprt = DWC_OTG_READ_4(sc, DOTG_HPRT); /* clear change bits */ DWC_OTG_WRITE_4(sc, DOTG_HPRT, (hprt & ( HPRT_PRTPWR | HPRT_PRTENCHNG | HPRT_PRTCONNDET | HPRT_PRTOVRCURRCHNG)) | sc->sc_hprt_val); DPRINTFN(12, "GINTSTS=0x%08x, HPRT=0x%08x\n", status, hprt); sc->sc_flags.status_device_mode = 0; if (hprt & HPRT_PRTCONNSTS) sc->sc_flags.status_bus_reset = 1; else sc->sc_flags.status_bus_reset = 0; if ((hprt & HPRT_PRTENCHNG) && (hprt & HPRT_PRTENA) == 0) sc->sc_flags.change_enabled = 1; if (hprt & HPRT_PRTENA) sc->sc_flags.port_enabled = 1; else sc->sc_flags.port_enabled = 0; if (hprt & HPRT_PRTOVRCURRCHNG) sc->sc_flags.change_over_current = 1; if (hprt & HPRT_PRTOVRCURRACT) sc->sc_flags.port_over_current = 1; else sc->sc_flags.port_over_current = 0; if (hprt & HPRT_PRTPWR) sc->sc_flags.port_powered = 1; else sc->sc_flags.port_powered = 0; if (((hprt & HPRT_PRTSPD_MASK) >> HPRT_PRTSPD_SHIFT) == HPRT_PRTSPD_LOW) sc->sc_flags.status_low_speed = 1; else sc->sc_flags.status_low_speed = 0; if (((hprt & HPRT_PRTSPD_MASK) >> HPRT_PRTSPD_SHIFT) == HPRT_PRTSPD_HIGH) sc->sc_flags.status_high_speed = 1; else sc->sc_flags.status_high_speed = 0; if (hprt & HPRT_PRTCONNDET) sc->sc_flags.change_connect = 1; if (hprt & HPRT_PRTSUSP) dwc_otg_suspend_irq(sc); else dwc_otg_resume_irq(sc); /* complete root HUB interrupt endpoint */ dwc_otg_root_intr(sc); /* update host frame interval */ dwc_otg_update_host_frame_interval(sc); } /* * If resume and suspend is set at the same time we interpret * that like RESUME. Resume is set when there is at least 3 * milliseconds of inactivity on the USB BUS. */ if (status & GINTSTS_WKUPINT) { DPRINTFN(5, "resume interrupt\n"); dwc_otg_resume_irq(sc); } else if (status & GINTSTS_USBSUSP) { DPRINTFN(5, "suspend interrupt\n"); dwc_otg_suspend_irq(sc); } /* check VBUS */ if (status & (GINTSTS_USBSUSP | GINTSTS_USBRST | GINTMSK_OTGINTMSK | GINTSTS_SESSREQINT)) { uint32_t temp; temp = DWC_OTG_READ_4(sc, DOTG_GOTGCTL); DPRINTFN(5, "GOTGCTL=0x%08x\n", temp); dwc_otg_vbus_interrupt(sc, (temp & (GOTGCTL_ASESVLD | GOTGCTL_BSESVLD)) ? 1 : 0); } if (sc->sc_xfer_complete != 0) { sc->sc_xfer_complete = 0; /* complete FIFOs, if any */ dwc_otg_interrupt_complete_locked(sc); } USB_BUS_SPIN_UNLOCK(&sc->sc_bus); USB_BUS_UNLOCK(&sc->sc_bus); } static void dwc_otg_setup_standard_chain_sub(struct dwc_otg_std_temp *temp) { struct dwc_otg_td *td; /* get current Transfer Descriptor */ td = temp->td_next; temp->td = td; /* prepare for next TD */ temp->td_next = td->obj_next; /* fill out the Transfer Descriptor */ td->func = temp->func; td->pc = temp->pc; td->offset = temp->offset; td->remainder = temp->len; td->tx_bytes = 0; td->error_any = 0; td->error_stall = 0; td->npkt = 0; td->did_stall = temp->did_stall; td->short_pkt = temp->short_pkt; td->alt_next = temp->setup_alt_next; td->set_toggle = 0; td->got_short = 0; td->did_nak = 0; td->channel[0] = DWC_OTG_MAX_CHANNELS; td->channel[1] = DWC_OTG_MAX_CHANNELS; td->channel[2] = DWC_OTG_MAX_CHANNELS; td->state = 0; td->errcnt = 0; td->tt_scheduled = 0; td->tt_xactpos = HCSPLT_XACTPOS_BEGIN; } static void dwc_otg_setup_standard_chain(struct usb_xfer *xfer) { struct dwc_otg_std_temp temp; struct dwc_otg_td *td; uint32_t x; uint8_t need_sync; uint8_t is_host; DPRINTFN(9, "addr=%d endpt=%d sumlen=%d speed=%d\n", xfer->address, UE_GET_ADDR(xfer->endpointno), xfer->sumlen, usbd_get_speed(xfer->xroot->udev)); temp.max_frame_size = xfer->max_frame_size; td = xfer->td_start[0]; xfer->td_transfer_first = td; xfer->td_transfer_cache = td; /* setup temp */ temp.pc = NULL; temp.td = NULL; temp.td_next = xfer->td_start[0]; temp.offset = 0; temp.setup_alt_next = xfer->flags_int.short_frames_ok || xfer->flags_int.isochronous_xfr; temp.did_stall = !xfer->flags_int.control_stall; is_host = (xfer->xroot->udev->flags.usb_mode == USB_MODE_HOST); /* check if we should prepend a setup message */ if (xfer->flags_int.control_xfr) { if (xfer->flags_int.control_hdr) { if (is_host) temp.func = &dwc_otg_host_setup_tx; else temp.func = &dwc_otg_setup_rx; temp.len = xfer->frlengths[0]; temp.pc = xfer->frbuffers + 0; temp.short_pkt = temp.len ? 1 : 0; /* check for last frame */ if (xfer->nframes == 1) { /* no STATUS stage yet, SETUP is last */ if (xfer->flags_int.control_act) temp.setup_alt_next = 0; } dwc_otg_setup_standard_chain_sub(&temp); } x = 1; } else { x = 0; } if (x != xfer->nframes) { if (xfer->endpointno & UE_DIR_IN) { if (is_host) { temp.func = &dwc_otg_host_data_rx; need_sync = 0; } else { temp.func = &dwc_otg_data_tx; need_sync = 1; } } else { if (is_host) { temp.func = &dwc_otg_host_data_tx; need_sync = 0; } else { temp.func = &dwc_otg_data_rx; need_sync = 0; } } /* setup "pc" pointer */ temp.pc = xfer->frbuffers + x; } else { need_sync = 0; } while (x != xfer->nframes) { /* DATA0 / DATA1 message */ temp.len = xfer->frlengths[x]; x++; if (x == xfer->nframes) { if (xfer->flags_int.control_xfr) { if (xfer->flags_int.control_act) { temp.setup_alt_next = 0; } } else { temp.setup_alt_next = 0; } } if (temp.len == 0) { /* make sure that we send an USB packet */ temp.short_pkt = 0; } else { /* regular data transfer */ temp.short_pkt = (xfer->flags.force_short_xfer ? 0 : 1); } dwc_otg_setup_standard_chain_sub(&temp); if (xfer->flags_int.isochronous_xfr) { temp.offset += temp.len; } else { /* get next Page Cache pointer */ temp.pc = xfer->frbuffers + x; } } if (xfer->flags_int.control_xfr) { /* always setup a valid "pc" pointer for status and sync */ temp.pc = xfer->frbuffers + 0; temp.len = 0; temp.short_pkt = 0; temp.setup_alt_next = 0; /* check if we need to sync */ if (need_sync) { /* we need a SYNC point after TX */ temp.func = &dwc_otg_data_tx_sync; dwc_otg_setup_standard_chain_sub(&temp); } /* check if we should append a status stage */ if (!xfer->flags_int.control_act) { /* * Send a DATA1 message and invert the current * endpoint direction. */ if (xfer->endpointno & UE_DIR_IN) { if (is_host) { temp.func = &dwc_otg_host_data_tx; need_sync = 0; } else { temp.func = &dwc_otg_data_rx; need_sync = 0; } } else { if (is_host) { temp.func = &dwc_otg_host_data_rx; need_sync = 0; } else { temp.func = &dwc_otg_data_tx; need_sync = 1; } } dwc_otg_setup_standard_chain_sub(&temp); /* data toggle should be DATA1 */ td = temp.td; td->set_toggle = 1; if (need_sync) { /* we need a SYNC point after TX */ temp.func = &dwc_otg_data_tx_sync; dwc_otg_setup_standard_chain_sub(&temp); } } } else { /* check if we need to sync */ if (need_sync) { temp.pc = xfer->frbuffers + 0; temp.len = 0; temp.short_pkt = 0; temp.setup_alt_next = 0; /* we need a SYNC point after TX */ temp.func = &dwc_otg_data_tx_sync; dwc_otg_setup_standard_chain_sub(&temp); } } /* must have at least one frame! */ td = temp.td; xfer->td_transfer_last = td; if (is_host) { struct dwc_otg_softc *sc; uint32_t hcchar; uint32_t hcsplt; sc = DWC_OTG_BUS2SC(xfer->xroot->bus); /* get first again */ td = xfer->td_transfer_first; td->toggle = (xfer->endpoint->toggle_next ? 1 : 0); hcchar = (xfer->address << HCCHAR_DEVADDR_SHIFT) | ((xfer->endpointno & UE_ADDR) << HCCHAR_EPNUM_SHIFT) | (xfer->max_packet_size << HCCHAR_MPS_SHIFT) | HCCHAR_CHENA; /* * We are not always able to meet the timing * requirements of the USB interrupt endpoint's * complete split token, when doing transfers going * via a transaction translator. Use the CONTROL * transfer type instead of the INTERRUPT transfer * type in general, as a means to workaround * that. This trick should work for both FULL and LOW * speed USB traffic going through a TT. For non-TT * traffic it works as well. The reason for using * CONTROL type instead of BULK is that some TTs might * reject LOW speed BULK traffic. */ if (td->ep_type == UE_INTERRUPT) hcchar |= (UE_CONTROL << HCCHAR_EPTYPE_SHIFT); else hcchar |= (td->ep_type << HCCHAR_EPTYPE_SHIFT); if (UE_GET_DIR(xfer->endpointno) == UE_DIR_IN) hcchar |= HCCHAR_EPDIR_IN; switch (xfer->xroot->udev->speed) { case USB_SPEED_LOW: hcchar |= HCCHAR_LSPDDEV; /* FALLTHROUGH */ case USB_SPEED_FULL: /* check if root HUB port is running High Speed */ if (dwc_otg_uses_split(xfer->xroot->udev)) { hcsplt = HCSPLT_SPLTENA | (xfer->xroot->udev->hs_port_no << HCSPLT_PRTADDR_SHIFT) | (xfer->xroot->udev->hs_hub_addr << HCSPLT_HUBADDR_SHIFT); } else { hcsplt = 0; } if (td->ep_type == UE_INTERRUPT) { uint32_t ival; ival = xfer->interval / DWC_OTG_HOST_TIMER_RATE; if (ival == 0) ival = 1; else if (ival > 127) ival = 127; td->tmr_val = sc->sc_tmr_val + ival; td->tmr_res = ival; } else if (td->ep_type == UE_ISOCHRONOUS) { td->tmr_res = 1; td->tmr_val = sc->sc_last_frame_num; if (td->hcchar & HCCHAR_EPDIR_IN) td->tmr_val++; } else { td->tmr_val = 0; td->tmr_res = (uint8_t)sc->sc_last_frame_num; } break; case USB_SPEED_HIGH: hcsplt = 0; if (td->ep_type == UE_INTERRUPT) { uint32_t ival; hcchar |= ((xfer->max_packet_count & 3) << HCCHAR_MC_SHIFT); ival = xfer->interval / DWC_OTG_HOST_TIMER_RATE; if (ival == 0) ival = 1; else if (ival > 127) ival = 127; td->tmr_val = sc->sc_tmr_val + ival; td->tmr_res = ival; } else if (td->ep_type == UE_ISOCHRONOUS) { hcchar |= ((xfer->max_packet_count & 3) << HCCHAR_MC_SHIFT); td->tmr_res = 1 << usbd_xfer_get_fps_shift(xfer); td->tmr_val = sc->sc_last_frame_num; if (td->hcchar & HCCHAR_EPDIR_IN) td->tmr_val += td->tmr_res; } else { td->tmr_val = 0; td->tmr_res = (uint8_t)sc->sc_last_frame_num; } break; default: hcsplt = 0; td->tmr_val = 0; td->tmr_res = 0; break; } /* store configuration in all TD's */ while (1) { td->hcchar = hcchar; td->hcsplt = hcsplt; if (((void *)td) == xfer->td_transfer_last) break; td = td->obj_next; } } } static void dwc_otg_timeout(void *arg) { struct usb_xfer *xfer = arg; DPRINTF("xfer=%p\n", xfer); USB_BUS_LOCK_ASSERT(xfer->xroot->bus, MA_OWNED); /* transfer is transferred */ dwc_otg_device_done(xfer, USB_ERR_TIMEOUT); } static void dwc_otg_start_standard_chain(struct usb_xfer *xfer) { struct dwc_otg_softc *sc = DWC_OTG_BUS2SC(xfer->xroot->bus); DPRINTFN(9, "\n"); /* * Poll one time in device mode, which will turn on the * endpoint interrupts. Else wait for SOF interrupt in host * mode. */ USB_BUS_SPIN_LOCK(&sc->sc_bus); if (sc->sc_flags.status_device_mode != 0) { dwc_otg_xfer_do_fifo(sc, xfer); if (dwc_otg_xfer_do_complete_locked(sc, xfer)) goto done; } else { struct dwc_otg_td *td = xfer->td_transfer_cache; if (td->ep_type == UE_ISOCHRONOUS && (td->hcchar & HCCHAR_EPDIR_IN) == 0) { /* * Need to start ISOCHRONOUS OUT transfer ASAP * because execution is delayed by one 125us * microframe: */ dwc_otg_xfer_do_fifo(sc, xfer); if (dwc_otg_xfer_do_complete_locked(sc, xfer)) goto done; } } /* put transfer on interrupt queue */ usbd_transfer_enqueue(&xfer->xroot->bus->intr_q, xfer); /* start timeout, if any */ if (xfer->timeout != 0) { usbd_transfer_timeout_ms(xfer, &dwc_otg_timeout, xfer->timeout); } if (sc->sc_flags.status_device_mode != 0) goto done; /* enable SOF interrupt, if any */ dwc_otg_enable_sof_irq(sc); done: USB_BUS_SPIN_UNLOCK(&sc->sc_bus); } static void dwc_otg_root_intr(struct dwc_otg_softc *sc) { DPRINTFN(9, "\n"); USB_BUS_LOCK_ASSERT(&sc->sc_bus, MA_OWNED); /* set port bit */ sc->sc_hub_idata[0] = 0x02; /* we only have one port */ uhub_root_intr(&sc->sc_bus, sc->sc_hub_idata, sizeof(sc->sc_hub_idata)); } static usb_error_t dwc_otg_standard_done_sub(struct usb_xfer *xfer) { struct dwc_otg_td *td; uint32_t len; usb_error_t error; DPRINTFN(9, "\n"); td = xfer->td_transfer_cache; do { len = td->remainder; /* store last data toggle */ xfer->endpoint->toggle_next = td->toggle; if (xfer->aframes != xfer->nframes) { /* * Verify the length and subtract * the remainder from "frlengths[]": */ if (len > xfer->frlengths[xfer->aframes]) { td->error_any = 1; } else { xfer->frlengths[xfer->aframes] -= len; } } /* Check for transfer error */ if (td->error_any) { /* the transfer is finished */ error = (td->error_stall ? USB_ERR_STALLED : USB_ERR_IOERROR); td = NULL; break; } /* Check for short transfer */ if (len > 0) { if (xfer->flags_int.short_frames_ok || xfer->flags_int.isochronous_xfr) { /* follow alt next */ if (td->alt_next) { td = td->obj_next; } else { td = NULL; } } else { /* the transfer is finished */ td = NULL; } error = 0; break; } td = td->obj_next; /* this USB frame is complete */ error = 0; break; } while (0); /* update transfer cache */ xfer->td_transfer_cache = td; return (error); } static void dwc_otg_standard_done(struct usb_xfer *xfer) { usb_error_t err = 0; DPRINTFN(13, "xfer=%p endpoint=%p transfer done\n", xfer, xfer->endpoint); /* reset scanner */ xfer->td_transfer_cache = xfer->td_transfer_first; if (xfer->flags_int.control_xfr) { if (xfer->flags_int.control_hdr) { err = dwc_otg_standard_done_sub(xfer); } xfer->aframes = 1; if (xfer->td_transfer_cache == NULL) { goto done; } } while (xfer->aframes != xfer->nframes) { err = dwc_otg_standard_done_sub(xfer); xfer->aframes++; if (xfer->td_transfer_cache == NULL) { goto done; } } if (xfer->flags_int.control_xfr && !xfer->flags_int.control_act) { err = dwc_otg_standard_done_sub(xfer); } done: dwc_otg_device_done(xfer, err); } /*------------------------------------------------------------------------* * dwc_otg_device_done * * NOTE: this function can be called more than one time on the * same USB transfer! *------------------------------------------------------------------------*/ static void dwc_otg_device_done(struct usb_xfer *xfer, usb_error_t error) { struct dwc_otg_softc *sc = DWC_OTG_BUS2SC(xfer->xroot->bus); DPRINTFN(9, "xfer=%p, endpoint=%p, error=%d\n", xfer, xfer->endpoint, error); USB_BUS_SPIN_LOCK(&sc->sc_bus); if (xfer->flags_int.usb_mode == USB_MODE_DEVICE) { /* Interrupts are cleared by the interrupt handler */ } else { struct dwc_otg_td *td; td = xfer->td_transfer_cache; if (td != NULL) dwc_otg_host_channel_free(sc, td); } /* dequeue transfer and start next transfer */ usbd_transfer_done(xfer, error); USB_BUS_SPIN_UNLOCK(&sc->sc_bus); } static void dwc_otg_xfer_stall(struct usb_xfer *xfer) { dwc_otg_device_done(xfer, USB_ERR_STALLED); } static void dwc_otg_set_stall(struct usb_device *udev, struct usb_endpoint *ep, uint8_t *did_stall) { struct dwc_otg_softc *sc; uint32_t temp; uint32_t reg; uint8_t ep_no; USB_BUS_LOCK_ASSERT(udev->bus, MA_OWNED); /* check mode */ if (udev->flags.usb_mode != USB_MODE_DEVICE) { /* not supported */ return; } sc = DWC_OTG_BUS2SC(udev->bus); USB_BUS_SPIN_LOCK(&sc->sc_bus); /* get endpoint address */ ep_no = ep->edesc->bEndpointAddress; DPRINTFN(5, "endpoint=0x%x\n", ep_no); if (ep_no & UE_DIR_IN) { reg = DOTG_DIEPCTL(ep_no & UE_ADDR); temp = sc->sc_in_ctl[ep_no & UE_ADDR]; } else { reg = DOTG_DOEPCTL(ep_no & UE_ADDR); temp = sc->sc_out_ctl[ep_no & UE_ADDR]; } /* disable and stall endpoint */ DWC_OTG_WRITE_4(sc, reg, temp | DOEPCTL_EPDIS); DWC_OTG_WRITE_4(sc, reg, temp | DOEPCTL_STALL); /* clear active OUT ep */ if (!(ep_no & UE_DIR_IN)) { sc->sc_active_rx_ep &= ~(1U << (ep_no & UE_ADDR)); if (sc->sc_last_rx_status != 0 && (ep_no & UE_ADDR) == GRXSTSRD_CHNUM_GET( sc->sc_last_rx_status)) { /* dump data */ dwc_otg_common_rx_ack(sc); /* poll interrupt */ dwc_otg_interrupt_poll_locked(sc); dwc_otg_interrupt_complete_locked(sc); } } USB_BUS_SPIN_UNLOCK(&sc->sc_bus); } static void dwc_otg_clear_stall_sub_locked(struct dwc_otg_softc *sc, uint32_t mps, uint8_t ep_no, uint8_t ep_type, uint8_t ep_dir) { uint32_t reg; uint32_t temp; if (ep_type == UE_CONTROL) { /* clearing stall is not needed */ return; } if (ep_dir) { reg = DOTG_DIEPCTL(ep_no); } else { reg = DOTG_DOEPCTL(ep_no); sc->sc_active_rx_ep |= (1U << ep_no); } /* round up and mask away the multiplier count */ mps = (mps + 3) & 0x7FC; if (ep_type == UE_BULK) { temp = DIEPCTL_EPTYPE_SET( DIEPCTL_EPTYPE_BULK) | DIEPCTL_USBACTEP; } else if (ep_type == UE_INTERRUPT) { temp = DIEPCTL_EPTYPE_SET( DIEPCTL_EPTYPE_INTERRUPT) | DIEPCTL_USBACTEP; } else { temp = DIEPCTL_EPTYPE_SET( DIEPCTL_EPTYPE_ISOC) | DIEPCTL_USBACTEP; } temp |= DIEPCTL_MPS_SET(mps); temp |= DIEPCTL_TXFNUM_SET(ep_no); if (ep_dir) sc->sc_in_ctl[ep_no] = temp; else sc->sc_out_ctl[ep_no] = temp; DWC_OTG_WRITE_4(sc, reg, temp | DOEPCTL_EPDIS); DWC_OTG_WRITE_4(sc, reg, temp | DOEPCTL_SETD0PID); DWC_OTG_WRITE_4(sc, reg, temp | DIEPCTL_SNAK); /* we only reset the transmit FIFO */ if (ep_dir) { dwc_otg_tx_fifo_reset(sc, GRSTCTL_TXFIFO(ep_no) | GRSTCTL_TXFFLSH); DWC_OTG_WRITE_4(sc, DOTG_DIEPTSIZ(ep_no), 0); } /* poll interrupt */ dwc_otg_interrupt_poll_locked(sc); dwc_otg_interrupt_complete_locked(sc); } static void dwc_otg_clear_stall(struct usb_device *udev, struct usb_endpoint *ep) { struct dwc_otg_softc *sc; struct usb_endpoint_descriptor *ed; DPRINTFN(5, "endpoint=%p\n", ep); USB_BUS_LOCK_ASSERT(udev->bus, MA_OWNED); /* check mode */ if (udev->flags.usb_mode != USB_MODE_DEVICE) { /* not supported */ return; } /* get softc */ sc = DWC_OTG_BUS2SC(udev->bus); USB_BUS_SPIN_LOCK(&sc->sc_bus); /* get endpoint descriptor */ ed = ep->edesc; /* reset endpoint */ dwc_otg_clear_stall_sub_locked(sc, UGETW(ed->wMaxPacketSize), (ed->bEndpointAddress & UE_ADDR), (ed->bmAttributes & UE_XFERTYPE), (ed->bEndpointAddress & (UE_DIR_IN | UE_DIR_OUT))); USB_BUS_SPIN_UNLOCK(&sc->sc_bus); } static void dwc_otg_device_state_change(struct usb_device *udev) { struct dwc_otg_softc *sc; uint8_t x; /* check mode */ if (udev->flags.usb_mode != USB_MODE_DEVICE) { /* not supported */ return; } /* get softc */ sc = DWC_OTG_BUS2SC(udev->bus); /* deactivate all other endpoint but the control endpoint */ if (udev->state == USB_STATE_CONFIGURED || udev->state == USB_STATE_ADDRESSED) { USB_BUS_LOCK(&sc->sc_bus); for (x = 1; x != sc->sc_dev_ep_max; x++) { if (x < sc->sc_dev_in_ep_max) { DWC_OTG_WRITE_4(sc, DOTG_DIEPCTL(x), DIEPCTL_EPDIS); DWC_OTG_WRITE_4(sc, DOTG_DIEPCTL(x), 0); } DWC_OTG_WRITE_4(sc, DOTG_DOEPCTL(x), DOEPCTL_EPDIS); DWC_OTG_WRITE_4(sc, DOTG_DOEPCTL(x), 0); } USB_BUS_UNLOCK(&sc->sc_bus); } } int dwc_otg_init(struct dwc_otg_softc *sc) { uint32_t temp; DPRINTF("start\n"); /* set up the bus structure */ sc->sc_bus.usbrev = USB_REV_2_0; sc->sc_bus.methods = &dwc_otg_bus_methods; usb_callout_init_mtx(&sc->sc_timer, &sc->sc_bus.bus_mtx, 0); USB_BUS_LOCK(&sc->sc_bus); /* turn on clocks */ dwc_otg_clocks_on(sc); temp = DWC_OTG_READ_4(sc, DOTG_GSNPSID); DPRINTF("Version = 0x%08x\n", temp); /* disconnect */ DWC_OTG_WRITE_4(sc, DOTG_DCTL, DCTL_SFTDISCON); /* wait for host to detect disconnect */ usb_pause_mtx(&sc->sc_bus.bus_mtx, hz / 32); DWC_OTG_WRITE_4(sc, DOTG_GRSTCTL, GRSTCTL_CSFTRST); /* wait a little bit for block to reset */ usb_pause_mtx(&sc->sc_bus.bus_mtx, hz / 128); switch (sc->sc_mode) { case DWC_MODE_DEVICE: temp = GUSBCFG_FORCEDEVMODE; break; case DWC_MODE_HOST: temp = GUSBCFG_FORCEHOSTMODE; break; default: temp = 0; break; } if (sc->sc_phy_type == 0) sc->sc_phy_type = dwc_otg_phy_type + 1; if (sc->sc_phy_bits == 0) sc->sc_phy_bits = 16; /* select HSIC, ULPI, UTMI+ or internal PHY mode */ switch (sc->sc_phy_type) { case DWC_OTG_PHY_HSIC: DWC_OTG_WRITE_4(sc, DOTG_GUSBCFG, GUSBCFG_PHYIF | GUSBCFG_TRD_TIM_SET(5) | temp); DWC_OTG_WRITE_4(sc, DOTG_GOTGCTL, 0x000000EC); temp = DWC_OTG_READ_4(sc, DOTG_GLPMCFG); DWC_OTG_WRITE_4(sc, DOTG_GLPMCFG, temp & ~GLPMCFG_HSIC_CONN); DWC_OTG_WRITE_4(sc, DOTG_GLPMCFG, temp | GLPMCFG_HSIC_CONN); break; case DWC_OTG_PHY_ULPI: DWC_OTG_WRITE_4(sc, DOTG_GUSBCFG, GUSBCFG_ULPI_UTMI_SEL | GUSBCFG_TRD_TIM_SET(5) | temp); DWC_OTG_WRITE_4(sc, DOTG_GOTGCTL, 0); temp = DWC_OTG_READ_4(sc, DOTG_GLPMCFG); DWC_OTG_WRITE_4(sc, DOTG_GLPMCFG, temp & ~GLPMCFG_HSIC_CONN); break; case DWC_OTG_PHY_UTMI: DWC_OTG_WRITE_4(sc, DOTG_GUSBCFG, (sc->sc_phy_bits == 16 ? GUSBCFG_PHYIF : 0) | GUSBCFG_TRD_TIM_SET(5) | temp); DWC_OTG_WRITE_4(sc, DOTG_GOTGCTL, 0); temp = DWC_OTG_READ_4(sc, DOTG_GLPMCFG); DWC_OTG_WRITE_4(sc, DOTG_GLPMCFG, temp & ~GLPMCFG_HSIC_CONN); break; case DWC_OTG_PHY_INTERNAL: DWC_OTG_WRITE_4(sc, DOTG_GUSBCFG, GUSBCFG_PHYSEL | GUSBCFG_TRD_TIM_SET(5) | temp); DWC_OTG_WRITE_4(sc, DOTG_GOTGCTL, 0); temp = DWC_OTG_READ_4(sc, DOTG_GLPMCFG); DWC_OTG_WRITE_4(sc, DOTG_GLPMCFG, temp & ~GLPMCFG_HSIC_CONN); temp = DWC_OTG_READ_4(sc, DOTG_GGPIO); temp &= ~(DOTG_GGPIO_NOVBUSSENS | DOTG_GGPIO_I2CPADEN); temp |= (DOTG_GGPIO_VBUSASEN | DOTG_GGPIO_VBUSBSEN | DOTG_GGPIO_PWRDWN); DWC_OTG_WRITE_4(sc, DOTG_GGPIO, temp); break; default: break; } /* clear global nak */ DWC_OTG_WRITE_4(sc, DOTG_DCTL, DCTL_CGOUTNAK | DCTL_CGNPINNAK); /* disable USB port */ DWC_OTG_WRITE_4(sc, DOTG_PCGCCTL, 0xFFFFFFFF); /* wait 10ms */ usb_pause_mtx(&sc->sc_bus.bus_mtx, hz / 100); /* enable USB port */ DWC_OTG_WRITE_4(sc, DOTG_PCGCCTL, 0); /* wait 10ms */ usb_pause_mtx(&sc->sc_bus.bus_mtx, hz / 100); temp = DWC_OTG_READ_4(sc, DOTG_GHWCFG3); sc->sc_fifo_size = 4 * GHWCFG3_DFIFODEPTH_GET(temp); temp = DWC_OTG_READ_4(sc, DOTG_GHWCFG2); sc->sc_dev_ep_max = GHWCFG2_NUMDEVEPS_GET(temp); if (sc->sc_dev_ep_max > DWC_OTG_MAX_ENDPOINTS) sc->sc_dev_ep_max = DWC_OTG_MAX_ENDPOINTS; sc->sc_host_ch_max = GHWCFG2_NUMHSTCHNL_GET(temp); if (sc->sc_host_ch_max > DWC_OTG_MAX_CHANNELS) sc->sc_host_ch_max = DWC_OTG_MAX_CHANNELS; temp = DWC_OTG_READ_4(sc, DOTG_GHWCFG4); sc->sc_dev_in_ep_max = GHWCFG4_NUM_IN_EP_GET(temp); DPRINTF("Total FIFO size = %d bytes, Device EPs = %d/%d Host CHs = %d\n", sc->sc_fifo_size, sc->sc_dev_ep_max, sc->sc_dev_in_ep_max, sc->sc_host_ch_max); /* setup FIFO */ if (dwc_otg_init_fifo(sc, sc->sc_mode)) { USB_BUS_UNLOCK(&sc->sc_bus); return (EINVAL); } /* enable interrupts */ sc->sc_irq_mask |= DWC_OTG_MSK_GINT_THREAD_IRQ; DWC_OTG_WRITE_4(sc, DOTG_GINTMSK, sc->sc_irq_mask); if (sc->sc_mode == DWC_MODE_OTG || sc->sc_mode == DWC_MODE_DEVICE) { /* enable all endpoint interrupts */ temp = DWC_OTG_READ_4(sc, DOTG_GHWCFG2); if (temp & GHWCFG2_MPI) { uint8_t x; DPRINTF("Disable Multi Process Interrupts\n"); for (x = 0; x != sc->sc_dev_in_ep_max; x++) { DWC_OTG_WRITE_4(sc, DOTG_DIEPEACHINTMSK(x), 0); DWC_OTG_WRITE_4(sc, DOTG_DOEPEACHINTMSK(x), 0); } DWC_OTG_WRITE_4(sc, DOTG_DEACHINTMSK, 0); } DWC_OTG_WRITE_4(sc, DOTG_DIEPMSK, DIEPMSK_XFERCOMPLMSK); DWC_OTG_WRITE_4(sc, DOTG_DOEPMSK, 0); DWC_OTG_WRITE_4(sc, DOTG_DAINTMSK, 0xFFFF); } if (sc->sc_mode == DWC_MODE_OTG || sc->sc_mode == DWC_MODE_HOST) { /* setup clocks */ temp = DWC_OTG_READ_4(sc, DOTG_HCFG); temp &= ~(HCFG_FSLSSUPP | HCFG_FSLSPCLKSEL_MASK); temp |= (1 << HCFG_FSLSPCLKSEL_SHIFT); DWC_OTG_WRITE_4(sc, DOTG_HCFG, temp); } /* only enable global IRQ */ DWC_OTG_WRITE_4(sc, DOTG_GAHBCFG, GAHBCFG_GLBLINTRMSK); /* turn off clocks */ dwc_otg_clocks_off(sc); /* read initial VBUS state */ temp = DWC_OTG_READ_4(sc, DOTG_GOTGCTL); DPRINTFN(5, "GOTCTL=0x%08x\n", temp); dwc_otg_vbus_interrupt(sc, (temp & (GOTGCTL_ASESVLD | GOTGCTL_BSESVLD)) ? 1 : 0); USB_BUS_UNLOCK(&sc->sc_bus); /* catch any lost interrupts */ dwc_otg_do_poll(&sc->sc_bus); return (0); /* success */ } void dwc_otg_uninit(struct dwc_otg_softc *sc) { USB_BUS_LOCK(&sc->sc_bus); /* stop host timer */ dwc_otg_timer_stop(sc); /* set disconnect */ DWC_OTG_WRITE_4(sc, DOTG_DCTL, DCTL_SFTDISCON); /* turn off global IRQ */ DWC_OTG_WRITE_4(sc, DOTG_GAHBCFG, 0); sc->sc_flags.port_enabled = 0; sc->sc_flags.port_powered = 0; sc->sc_flags.status_vbus = 0; sc->sc_flags.status_bus_reset = 0; sc->sc_flags.status_suspend = 0; sc->sc_flags.change_suspend = 0; sc->sc_flags.change_connect = 1; dwc_otg_pull_down(sc); dwc_otg_clocks_off(sc); USB_BUS_UNLOCK(&sc->sc_bus); usb_callout_drain(&sc->sc_timer); } static void dwc_otg_suspend(struct dwc_otg_softc *sc) { return; } static void dwc_otg_resume(struct dwc_otg_softc *sc) { return; } static void dwc_otg_do_poll(struct usb_bus *bus) { struct dwc_otg_softc *sc = DWC_OTG_BUS2SC(bus); USB_BUS_LOCK(&sc->sc_bus); USB_BUS_SPIN_LOCK(&sc->sc_bus); dwc_otg_interrupt_poll_locked(sc); dwc_otg_interrupt_complete_locked(sc); USB_BUS_SPIN_UNLOCK(&sc->sc_bus); USB_BUS_UNLOCK(&sc->sc_bus); } /*------------------------------------------------------------------------* * DWC OTG bulk support * DWC OTG control support * DWC OTG interrupt support *------------------------------------------------------------------------*/ static void dwc_otg_device_non_isoc_open(struct usb_xfer *xfer) { } static void dwc_otg_device_non_isoc_close(struct usb_xfer *xfer) { dwc_otg_device_done(xfer, USB_ERR_CANCELLED); } static void dwc_otg_device_non_isoc_enter(struct usb_xfer *xfer) { } static void dwc_otg_device_non_isoc_start(struct usb_xfer *xfer) { /* setup TDs */ dwc_otg_setup_standard_chain(xfer); dwc_otg_start_standard_chain(xfer); } static const struct usb_pipe_methods dwc_otg_device_non_isoc_methods = { .open = dwc_otg_device_non_isoc_open, .close = dwc_otg_device_non_isoc_close, .enter = dwc_otg_device_non_isoc_enter, .start = dwc_otg_device_non_isoc_start, }; /*------------------------------------------------------------------------* * DWC OTG full speed isochronous support *------------------------------------------------------------------------*/ static void dwc_otg_device_isoc_open(struct usb_xfer *xfer) { } static void dwc_otg_device_isoc_close(struct usb_xfer *xfer) { dwc_otg_device_done(xfer, USB_ERR_CANCELLED); } static void dwc_otg_device_isoc_enter(struct usb_xfer *xfer) { } static void dwc_otg_device_isoc_start(struct usb_xfer *xfer) { struct dwc_otg_softc *sc = DWC_OTG_BUS2SC(xfer->xroot->bus); uint32_t temp; uint32_t msframes; uint32_t framenum; uint8_t shift = usbd_xfer_get_fps_shift(xfer); DPRINTFN(6, "xfer=%p next=%d nframes=%d\n", xfer, xfer->endpoint->isoc_next, xfer->nframes); if (xfer->xroot->udev->flags.usb_mode == USB_MODE_HOST) { temp = DWC_OTG_READ_4(sc, DOTG_HFNUM); /* get the current frame index */ framenum = (temp & HFNUM_FRNUM_MASK); } else { temp = DWC_OTG_READ_4(sc, DOTG_DSTS); /* get the current frame index */ framenum = DSTS_SOFFN_GET(temp); } /* * Check if port is doing 8000 or 1000 frames per second: */ if (sc->sc_flags.status_high_speed) framenum /= 8; framenum &= DWC_OTG_FRAME_MASK; /* * Compute number of milliseconds worth of data traffic for * this USB transfer: */ if (xfer->xroot->udev->speed == USB_SPEED_HIGH) msframes = ((xfer->nframes << shift) + 7) / 8; else msframes = xfer->nframes; /* * check if the frame index is within the window where the frames * will be inserted */ temp = (framenum - xfer->endpoint->isoc_next) & DWC_OTG_FRAME_MASK; if ((xfer->endpoint->is_synced == 0) || (temp < msframes)) { /* * If there is data underflow or the pipe queue is * empty we schedule the transfer a few frames ahead * of the current frame position. Else two isochronous * transfers might overlap. */ xfer->endpoint->isoc_next = (framenum + 3) & DWC_OTG_FRAME_MASK; xfer->endpoint->is_synced = 1; DPRINTFN(3, "start next=%d\n", xfer->endpoint->isoc_next); } /* * compute how many milliseconds the insertion is ahead of the * current frame position: */ temp = (xfer->endpoint->isoc_next - framenum) & DWC_OTG_FRAME_MASK; /* * pre-compute when the isochronous transfer will be finished: */ xfer->isoc_time_complete = usb_isoc_time_expand(&sc->sc_bus, framenum) + temp + msframes; /* setup TDs */ dwc_otg_setup_standard_chain(xfer); /* compute frame number for next insertion */ xfer->endpoint->isoc_next += msframes; /* start TD chain */ dwc_otg_start_standard_chain(xfer); } static const struct usb_pipe_methods dwc_otg_device_isoc_methods = { .open = dwc_otg_device_isoc_open, .close = dwc_otg_device_isoc_close, .enter = dwc_otg_device_isoc_enter, .start = dwc_otg_device_isoc_start, }; /*------------------------------------------------------------------------* * DWC OTG root control support *------------------------------------------------------------------------* * Simulate a hardware HUB by handling all the necessary requests. *------------------------------------------------------------------------*/ static const struct usb_device_descriptor dwc_otg_devd = { .bLength = sizeof(struct usb_device_descriptor), .bDescriptorType = UDESC_DEVICE, .bcdUSB = {0x00, 0x02}, .bDeviceClass = UDCLASS_HUB, .bDeviceSubClass = UDSUBCLASS_HUB, .bDeviceProtocol = UDPROTO_HSHUBSTT, .bMaxPacketSize = 64, .bcdDevice = {0x00, 0x01}, .iManufacturer = 1, .iProduct = 2, .bNumConfigurations = 1, }; static const struct dwc_otg_config_desc dwc_otg_confd = { .confd = { .bLength = sizeof(struct usb_config_descriptor), .bDescriptorType = UDESC_CONFIG, .wTotalLength[0] = sizeof(dwc_otg_confd), .bNumInterface = 1, .bConfigurationValue = 1, .iConfiguration = 0, .bmAttributes = UC_SELF_POWERED, .bMaxPower = 0, }, .ifcd = { .bLength = sizeof(struct usb_interface_descriptor), .bDescriptorType = UDESC_INTERFACE, .bNumEndpoints = 1, .bInterfaceClass = UICLASS_HUB, .bInterfaceSubClass = UISUBCLASS_HUB, .bInterfaceProtocol = 0, }, .endpd = { .bLength = sizeof(struct usb_endpoint_descriptor), .bDescriptorType = UDESC_ENDPOINT, .bEndpointAddress = (UE_DIR_IN | DWC_OTG_INTR_ENDPT), .bmAttributes = UE_INTERRUPT, .wMaxPacketSize[0] = 8, .bInterval = 255, }, }; #define HSETW(ptr, val) ptr = { (uint8_t)(val), (uint8_t)((val) >> 8) } static const struct usb_hub_descriptor_min dwc_otg_hubd = { .bDescLength = sizeof(dwc_otg_hubd), .bDescriptorType = UDESC_HUB, .bNbrPorts = 1, HSETW(.wHubCharacteristics, (UHD_PWR_NO_SWITCH | UHD_OC_INDIVIDUAL)), .bPwrOn2PwrGood = 50, .bHubContrCurrent = 0, .DeviceRemovable = {0}, /* port is removable */ }; #define STRING_VENDOR \ "D\0W\0C\0O\0T\0G" #define STRING_PRODUCT \ "O\0T\0G\0 \0R\0o\0o\0t\0 \0H\0U\0B" USB_MAKE_STRING_DESC(STRING_VENDOR, dwc_otg_vendor); USB_MAKE_STRING_DESC(STRING_PRODUCT, dwc_otg_product); static usb_error_t dwc_otg_roothub_exec(struct usb_device *udev, struct usb_device_request *req, const void **pptr, uint16_t *plength) { struct dwc_otg_softc *sc = DWC_OTG_BUS2SC(udev->bus); const void *ptr; uint16_t len; uint16_t value; uint16_t index; usb_error_t err; USB_BUS_LOCK_ASSERT(&sc->sc_bus, MA_OWNED); /* buffer reset */ ptr = (const void *)&sc->sc_hub_temp; len = 0; err = 0; value = UGETW(req->wValue); index = UGETW(req->wIndex); /* demultiplex the control request */ switch (req->bmRequestType) { case UT_READ_DEVICE: switch (req->bRequest) { case UR_GET_DESCRIPTOR: goto tr_handle_get_descriptor; case UR_GET_CONFIG: goto tr_handle_get_config; case UR_GET_STATUS: goto tr_handle_get_status; default: goto tr_stalled; } break; case UT_WRITE_DEVICE: switch (req->bRequest) { case UR_SET_ADDRESS: goto tr_handle_set_address; case UR_SET_CONFIG: goto tr_handle_set_config; case UR_CLEAR_FEATURE: goto tr_valid; /* nop */ case UR_SET_DESCRIPTOR: goto tr_valid; /* nop */ case UR_SET_FEATURE: default: goto tr_stalled; } break; case UT_WRITE_ENDPOINT: switch (req->bRequest) { case UR_CLEAR_FEATURE: switch (UGETW(req->wValue)) { case UF_ENDPOINT_HALT: goto tr_handle_clear_halt; case UF_DEVICE_REMOTE_WAKEUP: goto tr_handle_clear_wakeup; default: goto tr_stalled; } break; case UR_SET_FEATURE: switch (UGETW(req->wValue)) { case UF_ENDPOINT_HALT: goto tr_handle_set_halt; case UF_DEVICE_REMOTE_WAKEUP: goto tr_handle_set_wakeup; default: goto tr_stalled; } break; case UR_SYNCH_FRAME: goto tr_valid; /* nop */ default: goto tr_stalled; } break; case UT_READ_ENDPOINT: switch (req->bRequest) { case UR_GET_STATUS: goto tr_handle_get_ep_status; default: goto tr_stalled; } break; case UT_WRITE_INTERFACE: switch (req->bRequest) { case UR_SET_INTERFACE: goto tr_handle_set_interface; case UR_CLEAR_FEATURE: goto tr_valid; /* nop */ case UR_SET_FEATURE: default: goto tr_stalled; } break; case UT_READ_INTERFACE: switch (req->bRequest) { case UR_GET_INTERFACE: goto tr_handle_get_interface; case UR_GET_STATUS: goto tr_handle_get_iface_status; default: goto tr_stalled; } break; case UT_WRITE_CLASS_INTERFACE: case UT_WRITE_VENDOR_INTERFACE: /* XXX forward */ break; case UT_READ_CLASS_INTERFACE: case UT_READ_VENDOR_INTERFACE: /* XXX forward */ break; case UT_WRITE_CLASS_DEVICE: switch (req->bRequest) { case UR_CLEAR_FEATURE: goto tr_valid; case UR_SET_DESCRIPTOR: case UR_SET_FEATURE: break; default: goto tr_stalled; } break; case UT_WRITE_CLASS_OTHER: switch (req->bRequest) { case UR_CLEAR_FEATURE: goto tr_handle_clear_port_feature; case UR_SET_FEATURE: goto tr_handle_set_port_feature; case UR_CLEAR_TT_BUFFER: case UR_RESET_TT: case UR_STOP_TT: goto tr_valid; default: goto tr_stalled; } break; case UT_READ_CLASS_OTHER: switch (req->bRequest) { case UR_GET_TT_STATE: goto tr_handle_get_tt_state; case UR_GET_STATUS: goto tr_handle_get_port_status; default: goto tr_stalled; } break; case UT_READ_CLASS_DEVICE: switch (req->bRequest) { case UR_GET_DESCRIPTOR: goto tr_handle_get_class_descriptor; case UR_GET_STATUS: goto tr_handle_get_class_status; default: goto tr_stalled; } break; default: goto tr_stalled; } goto tr_valid; tr_handle_get_descriptor: switch (value >> 8) { case UDESC_DEVICE: if (value & 0xff) { goto tr_stalled; } len = sizeof(dwc_otg_devd); ptr = (const void *)&dwc_otg_devd; goto tr_valid; case UDESC_CONFIG: if (value & 0xff) { goto tr_stalled; } len = sizeof(dwc_otg_confd); ptr = (const void *)&dwc_otg_confd; goto tr_valid; case UDESC_STRING: switch (value & 0xff) { case 0: /* Language table */ len = sizeof(usb_string_lang_en); ptr = (const void *)&usb_string_lang_en; goto tr_valid; case 1: /* Vendor */ len = sizeof(dwc_otg_vendor); ptr = (const void *)&dwc_otg_vendor; goto tr_valid; case 2: /* Product */ len = sizeof(dwc_otg_product); ptr = (const void *)&dwc_otg_product; goto tr_valid; default: break; } break; default: goto tr_stalled; } goto tr_stalled; tr_handle_get_config: len = 1; sc->sc_hub_temp.wValue[0] = sc->sc_conf; goto tr_valid; tr_handle_get_status: len = 2; USETW(sc->sc_hub_temp.wValue, UDS_SELF_POWERED); goto tr_valid; tr_handle_set_address: if (value & 0xFF00) { goto tr_stalled; } sc->sc_rt_addr = value; goto tr_valid; tr_handle_set_config: if (value >= 2) { goto tr_stalled; } sc->sc_conf = value; goto tr_valid; tr_handle_get_interface: len = 1; sc->sc_hub_temp.wValue[0] = 0; goto tr_valid; tr_handle_get_tt_state: tr_handle_get_class_status: tr_handle_get_iface_status: tr_handle_get_ep_status: len = 2; USETW(sc->sc_hub_temp.wValue, 0); goto tr_valid; tr_handle_set_halt: tr_handle_set_interface: tr_handle_set_wakeup: tr_handle_clear_wakeup: tr_handle_clear_halt: goto tr_valid; tr_handle_clear_port_feature: if (index != 1) goto tr_stalled; DPRINTFN(9, "UR_CLEAR_PORT_FEATURE on port %d\n", index); switch (value) { case UHF_PORT_SUSPEND: dwc_otg_wakeup_peer(sc); break; case UHF_PORT_ENABLE: if (sc->sc_flags.status_device_mode == 0) { DWC_OTG_WRITE_4(sc, DOTG_HPRT, sc->sc_hprt_val | HPRT_PRTENA); } sc->sc_flags.port_enabled = 0; break; case UHF_C_PORT_RESET: sc->sc_flags.change_reset = 0; break; case UHF_C_PORT_ENABLE: sc->sc_flags.change_enabled = 0; break; case UHF_C_PORT_OVER_CURRENT: sc->sc_flags.change_over_current = 0; break; case UHF_PORT_TEST: case UHF_PORT_INDICATOR: /* nops */ break; case UHF_PORT_POWER: sc->sc_flags.port_powered = 0; if (sc->sc_mode == DWC_MODE_HOST || sc->sc_mode == DWC_MODE_OTG) { sc->sc_hprt_val = 0; DWC_OTG_WRITE_4(sc, DOTG_HPRT, HPRT_PRTENA); } dwc_otg_pull_down(sc); dwc_otg_clocks_off(sc); break; case UHF_C_PORT_CONNECTION: /* clear connect change flag */ sc->sc_flags.change_connect = 0; break; case UHF_C_PORT_SUSPEND: sc->sc_flags.change_suspend = 0; break; default: err = USB_ERR_IOERROR; goto done; } goto tr_valid; tr_handle_set_port_feature: if (index != 1) { goto tr_stalled; } DPRINTFN(9, "UR_SET_PORT_FEATURE\n"); switch (value) { case UHF_PORT_ENABLE: break; case UHF_PORT_SUSPEND: if (sc->sc_flags.status_device_mode == 0) { /* set suspend BIT */ sc->sc_hprt_val |= HPRT_PRTSUSP; DWC_OTG_WRITE_4(sc, DOTG_HPRT, sc->sc_hprt_val); /* generate HUB suspend event */ dwc_otg_suspend_irq(sc); } break; case UHF_PORT_RESET: if (sc->sc_flags.status_device_mode == 0) { DPRINTF("PORT RESET\n"); /* enable PORT reset */ DWC_OTG_WRITE_4(sc, DOTG_HPRT, sc->sc_hprt_val | HPRT_PRTRST); /* Wait 62.5ms for reset to complete */ usb_pause_mtx(&sc->sc_bus.bus_mtx, hz / 16); DWC_OTG_WRITE_4(sc, DOTG_HPRT, sc->sc_hprt_val); /* Wait 62.5ms for reset to complete */ usb_pause_mtx(&sc->sc_bus.bus_mtx, hz / 16); /* reset FIFOs */ (void) dwc_otg_init_fifo(sc, DWC_MODE_HOST); sc->sc_flags.change_reset = 1; } else { err = USB_ERR_IOERROR; } break; case UHF_PORT_TEST: case UHF_PORT_INDICATOR: /* nops */ break; case UHF_PORT_POWER: sc->sc_flags.port_powered = 1; if (sc->sc_mode == DWC_MODE_HOST || sc->sc_mode == DWC_MODE_OTG) { sc->sc_hprt_val |= HPRT_PRTPWR; DWC_OTG_WRITE_4(sc, DOTG_HPRT, sc->sc_hprt_val); } if (sc->sc_mode == DWC_MODE_DEVICE || sc->sc_mode == DWC_MODE_OTG) { /* pull up D+, if any */ dwc_otg_pull_up(sc); } break; default: err = USB_ERR_IOERROR; goto done; } goto tr_valid; tr_handle_get_port_status: DPRINTFN(9, "UR_GET_PORT_STATUS\n"); if (index != 1) goto tr_stalled; if (sc->sc_flags.status_vbus) dwc_otg_clocks_on(sc); else dwc_otg_clocks_off(sc); /* Select Device Side Mode */ if (sc->sc_flags.status_device_mode) { value = UPS_PORT_MODE_DEVICE; dwc_otg_timer_stop(sc); } else { value = 0; dwc_otg_timer_start(sc); } if (sc->sc_flags.status_high_speed) value |= UPS_HIGH_SPEED; else if (sc->sc_flags.status_low_speed) value |= UPS_LOW_SPEED; if (sc->sc_flags.port_powered) value |= UPS_PORT_POWER; if (sc->sc_flags.port_enabled) value |= UPS_PORT_ENABLED; if (sc->sc_flags.port_over_current) value |= UPS_OVERCURRENT_INDICATOR; if (sc->sc_flags.status_vbus && sc->sc_flags.status_bus_reset) value |= UPS_CURRENT_CONNECT_STATUS; if (sc->sc_flags.status_suspend) value |= UPS_SUSPEND; USETW(sc->sc_hub_temp.ps.wPortStatus, value); value = 0; if (sc->sc_flags.change_enabled) value |= UPS_C_PORT_ENABLED; if (sc->sc_flags.change_connect) value |= UPS_C_CONNECT_STATUS; if (sc->sc_flags.change_suspend) value |= UPS_C_SUSPEND; if (sc->sc_flags.change_reset) value |= UPS_C_PORT_RESET; if (sc->sc_flags.change_over_current) value |= UPS_C_OVERCURRENT_INDICATOR; USETW(sc->sc_hub_temp.ps.wPortChange, value); len = sizeof(sc->sc_hub_temp.ps); goto tr_valid; tr_handle_get_class_descriptor: if (value & 0xFF) { goto tr_stalled; } ptr = (const void *)&dwc_otg_hubd; len = sizeof(dwc_otg_hubd); goto tr_valid; tr_stalled: err = USB_ERR_STALLED; tr_valid: done: *plength = len; *pptr = ptr; return (err); } static void dwc_otg_xfer_setup(struct usb_setup_params *parm) { struct usb_xfer *xfer; void *last_obj; uint32_t ntd; uint32_t n; uint8_t ep_no; uint8_t ep_type; xfer = parm->curr_xfer; /* * NOTE: This driver does not use any of the parameters that * are computed from the following values. Just set some * reasonable dummies: */ parm->hc_max_packet_size = 0x500; parm->hc_max_packet_count = 3; parm->hc_max_frame_size = 3 * 0x500; usbd_transfer_setup_sub(parm); /* * compute maximum number of TDs */ ep_type = (xfer->endpoint->edesc->bmAttributes & UE_XFERTYPE); if (ep_type == UE_CONTROL) { ntd = xfer->nframes + 1 /* STATUS */ + 1 /* SYNC 1 */ + 1 /* SYNC 2 */ + 1 /* SYNC 3 */; } else { ntd = xfer->nframes + 1 /* SYNC */ ; } /* * check if "usbd_transfer_setup_sub" set an error */ if (parm->err) return; /* * allocate transfer descriptors */ last_obj = NULL; ep_no = xfer->endpointno & UE_ADDR; /* * Check for a valid endpoint profile in USB device mode: */ if (xfer->flags_int.usb_mode == USB_MODE_DEVICE) { const struct usb_hw_ep_profile *pf; dwc_otg_get_hw_ep_profile(parm->udev, &pf, ep_no); if (pf == NULL) { /* should not happen */ parm->err = USB_ERR_INVAL; return; } } /* align data */ parm->size[0] += ((-parm->size[0]) & (USB_HOST_ALIGN - 1)); for (n = 0; n != ntd; n++) { struct dwc_otg_td *td; if (parm->buf) { td = USB_ADD_BYTES(parm->buf, parm->size[0]); /* compute shared bandwidth resource index for TT */ if (dwc_otg_uses_split(parm->udev)) { if (parm->udev->parent_hs_hub->ddesc.bDeviceProtocol == UDPROTO_HSHUBMTT) td->tt_index = parm->udev->device_index; else td->tt_index = parm->udev->parent_hs_hub->device_index; } else { td->tt_index = parm->udev->device_index; } /* init TD */ td->max_packet_size = xfer->max_packet_size; td->max_packet_count = xfer->max_packet_count; /* range check */ if (td->max_packet_count == 0 || td->max_packet_count > 3) td->max_packet_count = 1; td->ep_no = ep_no; td->ep_type = ep_type; td->obj_next = last_obj; last_obj = td; } parm->size[0] += sizeof(*td); } xfer->td_start[0] = last_obj; } static void dwc_otg_xfer_unsetup(struct usb_xfer *xfer) { return; } static void dwc_otg_ep_init(struct usb_device *udev, struct usb_endpoint_descriptor *edesc, struct usb_endpoint *ep) { struct dwc_otg_softc *sc = DWC_OTG_BUS2SC(udev->bus); DPRINTFN(2, "endpoint=%p, addr=%d, endpt=%d, mode=%d (%d,%d)\n", ep, udev->address, edesc->bEndpointAddress, udev->flags.usb_mode, sc->sc_rt_addr, udev->device_index); if (udev->device_index != sc->sc_rt_addr) { if (udev->flags.usb_mode == USB_MODE_DEVICE) { if (udev->speed != USB_SPEED_FULL && udev->speed != USB_SPEED_HIGH) { /* not supported */ return; } } else { if (udev->speed == USB_SPEED_HIGH && (edesc->wMaxPacketSize[1] & 0x18) != 0 && (edesc->bmAttributes & UE_XFERTYPE) != UE_ISOCHRONOUS) { /* not supported */ DPRINTFN(-1, "Non-isochronous high bandwidth " "endpoint not supported\n"); return; } } if ((edesc->bmAttributes & UE_XFERTYPE) == UE_ISOCHRONOUS) ep->methods = &dwc_otg_device_isoc_methods; else ep->methods = &dwc_otg_device_non_isoc_methods; } } static void dwc_otg_set_hw_power_sleep(struct usb_bus *bus, uint32_t state) { struct dwc_otg_softc *sc = DWC_OTG_BUS2SC(bus); switch (state) { case USB_HW_POWER_SUSPEND: dwc_otg_suspend(sc); break; case USB_HW_POWER_SHUTDOWN: dwc_otg_uninit(sc); break; case USB_HW_POWER_RESUME: dwc_otg_resume(sc); break; default: break; } } static void dwc_otg_get_dma_delay(struct usb_device *udev, uint32_t *pus) { /* DMA delay - wait until any use of memory is finished */ *pus = (2125); /* microseconds */ } static void dwc_otg_device_resume(struct usb_device *udev) { DPRINTF("\n"); /* poll all transfers again to restart resumed ones */ dwc_otg_do_poll(udev->bus); } static void dwc_otg_device_suspend(struct usb_device *udev) { DPRINTF("\n"); } static const struct usb_bus_methods dwc_otg_bus_methods = { .endpoint_init = &dwc_otg_ep_init, .xfer_setup = &dwc_otg_xfer_setup, .xfer_unsetup = &dwc_otg_xfer_unsetup, .get_hw_ep_profile = &dwc_otg_get_hw_ep_profile, .xfer_stall = &dwc_otg_xfer_stall, .set_stall = &dwc_otg_set_stall, .clear_stall = &dwc_otg_clear_stall, .roothub_exec = &dwc_otg_roothub_exec, .xfer_poll = &dwc_otg_do_poll, .device_state_change = &dwc_otg_device_state_change, .set_hw_power_sleep = &dwc_otg_set_hw_power_sleep, .get_dma_delay = &dwc_otg_get_dma_delay, .device_resume = &dwc_otg_device_resume, .device_suspend = &dwc_otg_device_suspend, };