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https://git.FreeBSD.org/src.git
synced 2024-12-20 11:11:24 +00:00
Implement modem control in u3g. Tested on Option GTM382W, Huawei E220,
and Sierra Wireless MC8790V. Also implement the .ucom_poll method. Note: This makes it possible to use lqr/echo in ppp.conf. And it resolves ppp hanging during the PPp> phase. Reviewed by: hps MFC after: 1 week
This commit is contained in:
Nick Hibma
parent
82ed933c6f
commit
da016e84de
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=241555
@ -53,6 +53,7 @@
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#include <dev/usb/usb.h>
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#include <dev/usb/usbdi.h>
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#include <dev/usb/usbdi_util.h>
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#include <dev/usb/usb_cdc.h>
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#include "usbdevs.h"
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#define USB_DEBUG_VAR u3g_debug
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@ -99,6 +100,7 @@ SYSCTL_INT(_hw_usb_u3g, OID_AUTO, debug, CTLFLAG_RW,
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enum {
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U3G_BULK_WR,
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U3G_BULK_RD,
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U3G_INTR,
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U3G_N_TRANSFER,
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};
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@ -107,12 +109,15 @@ struct u3g_softc {
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struct ucom_softc sc_ucom[U3G_MAXPORTS];
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struct usb_xfer *sc_xfer[U3G_MAXPORTS][U3G_N_TRANSFER];
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uint8_t sc_iface[U3G_MAXPORTS]; /* local status register */
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uint8_t sc_lsr[U3G_MAXPORTS]; /* local status register */
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uint8_t sc_msr[U3G_MAXPORTS]; /* u3g status register */
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uint16_t sc_line[U3G_MAXPORTS]; /* line status */
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struct usb_device *sc_udev;
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struct mtx sc_mtx;
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uint8_t sc_lsr; /* local status register */
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uint8_t sc_msr; /* U3G status register */
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uint8_t sc_numports;
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uint8_t sc_numports;
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};
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static device_probe_t u3g_probe;
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@ -122,12 +127,17 @@ static void u3g_free_softc(struct u3g_softc *);
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static usb_callback_t u3g_write_callback;
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static usb_callback_t u3g_read_callback;
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static usb_callback_t u3g_intr_callback;
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static void u3g_free(struct ucom_softc *ucom);
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static void u3g_cfg_get_status(struct ucom_softc *, uint8_t *, uint8_t *);
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static void u3g_cfg_set_dtr(struct ucom_softc *, uint8_t);
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static void u3g_cfg_set_rts(struct ucom_softc *, uint8_t);
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static void u3g_start_read(struct ucom_softc *ucom);
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static void u3g_stop_read(struct ucom_softc *ucom);
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static void u3g_start_write(struct ucom_softc *ucom);
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static void u3g_stop_write(struct ucom_softc *ucom);
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static void u3g_poll(struct ucom_softc *ucom);
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static void u3g_free(struct ucom_softc *ucom);
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static void u3g_test_autoinst(void *, struct usb_device *,
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@ -155,13 +165,26 @@ static const struct usb_config u3g_config[U3G_N_TRANSFER] = {
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.flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
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.callback = &u3g_read_callback,
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},
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[U3G_INTR] = {
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.type = UE_INTERRUPT,
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.endpoint = UE_ADDR_ANY,
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.direction = UE_DIR_IN,
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.flags = {.pipe_bof = 1,.short_xfer_ok = 1,.no_pipe_ok = 1,},
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.bufsize = 0, /* use wMaxPacketSize */
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.callback = &u3g_intr_callback,
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},
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};
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static const struct ucom_callback u3g_callback = {
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.ucom_cfg_get_status = &u3g_cfg_get_status,
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.ucom_cfg_set_dtr = &u3g_cfg_set_dtr,
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.ucom_cfg_set_rts = &u3g_cfg_set_rts,
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.ucom_start_read = &u3g_start_read,
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.ucom_stop_read = &u3g_stop_read,
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.ucom_start_write = &u3g_start_write,
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.ucom_stop_write = &u3g_stop_write,
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.ucom_poll = &u3g_poll,
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.ucom_free = &u3g_free,
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};
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@ -849,6 +872,15 @@ u3g_attach(device_t dev)
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continue;
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}
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iface = usbd_get_iface(uaa->device, i);
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id = usbd_get_interface_descriptor(iface);
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sc->sc_iface[nports] = id->bInterfaceNumber;
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if (bootverbose && sc->sc_xfer[nports][U3G_INTR]) {
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device_printf(dev, "port %d supports modem control",
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nports);
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}
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/* set stall by default */
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mtx_lock(&sc->sc_mtx);
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usbd_xfer_set_stall(sc->sc_xfer[nports][U3G_BULK_WR]);
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@ -926,6 +958,9 @@ u3g_start_read(struct ucom_softc *ucom)
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{
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struct u3g_softc *sc = ucom->sc_parent;
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/* start interrupt endpoint (if configured) */
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usbd_transfer_start(sc->sc_xfer[ucom->sc_subunit][U3G_INTR]);
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/* start read endpoint */
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usbd_transfer_start(sc->sc_xfer[ucom->sc_subunit][U3G_BULK_RD]);
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}
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@ -935,6 +970,9 @@ u3g_stop_read(struct ucom_softc *ucom)
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{
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struct u3g_softc *sc = ucom->sc_parent;
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/* stop interrupt endpoint (if configured) */
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usbd_transfer_stop(sc->sc_xfer[ucom->sc_subunit][U3G_INTR]);
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/* stop read endpoint */
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usbd_transfer_stop(sc->sc_xfer[ucom->sc_subunit][U3G_BULK_RD]);
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}
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@ -1012,3 +1050,134 @@ u3g_read_callback(struct usb_xfer *xfer, usb_error_t error)
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break;
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}
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}
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static void
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u3g_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr)
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{
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struct u3g_softc *sc = ucom->sc_parent;
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*lsr = sc->sc_lsr[ucom->sc_subunit];
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*msr = sc->sc_msr[ucom->sc_subunit];
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}
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static void
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u3g_cfg_set_line(struct ucom_softc *ucom)
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{
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struct u3g_softc *sc = ucom->sc_parent;
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struct usb_device_request req;
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req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
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req.bRequest = UCDC_SET_CONTROL_LINE_STATE;
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USETW(req.wValue, sc->sc_line[ucom->sc_subunit]);
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req.wIndex[0] = sc->sc_iface[ucom->sc_subunit];
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req.wIndex[1] = 0;
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USETW(req.wLength, 0);
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ucom_cfg_do_request(sc->sc_udev, ucom,
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&req, NULL, 0, 1000);
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}
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static void
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u3g_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff)
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{
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struct u3g_softc *sc = ucom->sc_parent;
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DPRINTF("onoff = %d\n", onoff);
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if (onoff)
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sc->sc_line[ucom->sc_subunit] |= UCDC_LINE_DTR;
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else
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sc->sc_line[ucom->sc_subunit] &= ~UCDC_LINE_DTR;
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u3g_cfg_set_line(ucom);
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}
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static void
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u3g_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff)
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{
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struct u3g_softc *sc = ucom->sc_parent;
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DPRINTF("onoff = %d\n", onoff);
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if (onoff)
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sc->sc_line[ucom->sc_subunit] |= UCDC_LINE_RTS;
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else
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sc->sc_line[ucom->sc_subunit] &= ~UCDC_LINE_RTS;
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u3g_cfg_set_line(ucom);
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}
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static void
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u3g_intr_callback(struct usb_xfer *xfer, usb_error_t error)
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{
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struct ucom_softc *ucom = usbd_xfer_softc(xfer);
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struct u3g_softc *sc = ucom->sc_parent;
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struct usb_page_cache *pc;
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struct usb_cdc_notification pkt;
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int actlen;
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uint16_t wLen;
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uint8_t mstatus;
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usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
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switch (USB_GET_STATE(xfer)) {
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case USB_ST_TRANSFERRED:
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if (actlen < 8) { /* usb_cdc_notification with 2 data bytes */
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DPRINTF("message too short (expected 8, received %d)\n", actlen);
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goto tr_setup;
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}
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pc = usbd_xfer_get_frame(xfer, 0);
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usbd_copy_out(pc, 0, &pkt, actlen);
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wLen = UGETW(pkt.wLength);
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if (wLen < 2) {
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DPRINTF("message too short (expected 2 data bytes, received %d)\n", wLen);
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goto tr_setup;
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}
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if (pkt.bmRequestType == UCDC_NOTIFICATION
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&& pkt.bNotification == UCDC_N_SERIAL_STATE) {
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/*
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* Set the serial state in ucom driver based on
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* the bits from the notify message
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*/
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DPRINTF("notify bytes = 0x%02x, 0x%02x\n",
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pkt.data[0], pkt.data[1]);
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/* currently, lsr is always zero. */
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sc->sc_lsr[ucom->sc_subunit] = 0;
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sc->sc_msr[ucom->sc_subunit] = 0;
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mstatus = pkt.data[0];
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if (mstatus & UCDC_N_SERIAL_RI)
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sc->sc_msr[ucom->sc_subunit] |= SER_RI;
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if (mstatus & UCDC_N_SERIAL_DSR)
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sc->sc_msr[ucom->sc_subunit] |= SER_DSR;
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if (mstatus & UCDC_N_SERIAL_DCD)
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sc->sc_msr[ucom->sc_subunit] |= SER_DCD;
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ucom_status_change(ucom);
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}
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case USB_ST_SETUP:
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tr_setup:
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usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
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usbd_transfer_submit(xfer);
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return;
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default: /* Error */
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if (error != USB_ERR_CANCELLED) {
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/* try to clear stall first */
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usbd_xfer_set_stall(xfer);
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goto tr_setup;
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}
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return;
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}
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}
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static void
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u3g_poll(struct ucom_softc *ucom)
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{
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struct u3g_softc *sc = ucom->sc_parent;
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usbd_transfer_poll(sc->sc_xfer[ucom->sc_subunit], U3G_N_TRANSFER);
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}
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