Changes to cache endpoint descriptors for all the interfaces. this information
is not always available if we change interfaces. Submitted by: jamie at bishopston dot net (jamie jones) MFC after: 1 week
This commit is contained in:
Julian Elischer
parent
be063afc20
commit
060cd8af25
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=138715
@ -353,8 +353,8 @@ ugen_set_config(struct ugen_softc *sc, int configno)
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usbd_device_handle dev = sc->sc_udev;
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usbd_interface_handle iface;
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usb_endpoint_descriptor_t *ed;
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struct ugen_endpoint *sce;
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u_int8_t niface, nendpt;
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struct ugen_endpoint *sce, **sce_cache, ***sce_cache_arr;
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u_int8_t niface, niface_cache, nendpt, *nendpt_cache;
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int ifaceno, endptno, endpt;
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usbd_status err;
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int dir;
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@ -373,37 +373,103 @@ ugen_set_config(struct ugen_softc *sc, int configno)
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return (USBD_IN_USE);
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}
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/* Avoid setting the current value. */
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if (usbd_get_config_descriptor(dev)->bConfigurationValue != configno) {
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err = usbd_set_config_no(dev, configno, 1);
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if (err)
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return (err);
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}
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err = usbd_interface_count(dev, &niface);
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if (err)
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return (err);
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memset(sc->sc_endpoints, 0, sizeof sc->sc_endpoints);
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/* store an array of endpoint descriptors to clear if the configuration
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* change succeeds - these aren't available afterwards */
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nendpt_cache = malloc(sizeof(u_int8_t) * niface, M_TEMP, M_WAITOK);
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sce_cache_arr = malloc(sizeof(struct ugen_endpoint **) * niface, M_TEMP,
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M_WAITOK);
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niface_cache = niface;
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for (ifaceno = 0; ifaceno < niface; ifaceno++) {
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DPRINTFN(1,("ugen_set_config: ifaceno %d\n", ifaceno));
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err = usbd_device2interface_handle(dev, ifaceno, &iface);
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if (err)
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return (err);
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panic("ugen_set_config: can't obtain interface handle");
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err = usbd_endpoint_count(iface, &nendpt);
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if (err)
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return (err);
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panic("ugen_set_config: endpoint count failed");
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/* store endpoint descriptors for each interface */
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nendpt_cache[ifaceno] = nendpt;
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sce_cache = malloc(sizeof(struct ugen_endpoint *) * nendpt, M_TEMP,
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M_WAITOK);
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sce_cache_arr[ifaceno] = sce_cache;
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for (endptno = 0; endptno < nendpt; endptno++) {
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ed = usbd_interface2endpoint_descriptor(iface,endptno);
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endpt = ed->bEndpointAddress;
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dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT;
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sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir];
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DPRINTFN(1,("ugen_set_config: endptno %d, endpt=0x%02x"
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"(%d,%d), sce=%p\n",
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endptno, endpt, UE_GET_ADDR(endpt),
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UE_GET_DIR(endpt), sce));
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sce->sc = sc;
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sce->edesc = ed;
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sce->iface = iface;
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sce_cache[endptno] = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir];
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}
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}
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/* Avoid setting the current value. */
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if (usbd_get_config_descriptor(dev)->bConfigurationValue != configno) {
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/* attempt to perform the configuration change */
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err = usbd_set_config_no(dev, configno, 1);
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if (err) {
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for(ifaceno = 0; ifaceno < niface_cache; ifaceno++)
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free(sce_cache_arr[ifaceno], M_TEMP);
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free(sce_cache_arr, M_TEMP);
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free(nendpt_cache, M_TEMP);
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return (err);
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}
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}
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#if defined(__FreeBSD__)
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ugen_destroy_devnodes(sc);
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#endif
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/* now we can clear the old interface's ugen_endpoints */
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for(ifaceno = 0; ifaceno < niface_cache; ifaceno++) {
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sce_cache = sce_cache_arr[ifaceno];
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for(endptno = 0; endptno < nendpt_cache[ifaceno]; endptno++) {
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sce = sce_cache[endptno];
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sce->sc = 0;
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sce->edesc = 0;
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sce->iface = 0;
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}
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}
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/* and free the cache storing them */
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for(ifaceno = 0; ifaceno < niface_cache; ifaceno++)
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free(sce_cache_arr[ifaceno], M_TEMP);
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free(sce_cache_arr, M_TEMP);
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free(nendpt_cache, M_TEMP);
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/* no endpoints if the device is in the unconfigured state */
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if (configno != USB_UNCONFIG_NO)
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{
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/* set the new configuration's ugen_endpoints */
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err = usbd_interface_count(dev, &niface);
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if (err)
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panic("ugen_set_config: interface count failed");
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memset(sc->sc_endpoints, 0, sizeof sc->sc_endpoints);
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for (ifaceno = 0; ifaceno < niface; ifaceno++) {
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DPRINTFN(1,("ugen_set_config: ifaceno %d\n", ifaceno));
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err = usbd_device2interface_handle(dev, ifaceno, &iface);
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if (err)
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panic("ugen_set_config: can't obtain interface handle");
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err = usbd_endpoint_count(iface, &nendpt);
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if (err)
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panic("ugen_set_config: endpoint count failed");
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for (endptno = 0; endptno < nendpt; endptno++) {
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ed = usbd_interface2endpoint_descriptor(iface,endptno);
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endpt = ed->bEndpointAddress;
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dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT;
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sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir];
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DPRINTFN(1,("ugen_set_config: endptno %d, endpt=0x%02x"
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"(%d,%d), sce=%p\n",
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endptno, endpt, UE_GET_ADDR(endpt),
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UE_GET_DIR(endpt), sce));
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sce->sc = sc;
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sce->edesc = ed;
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sce->iface = iface;
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}
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}
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}
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@ -1075,8 +1141,8 @@ ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno)
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usbd_interface_handle iface;
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usb_endpoint_descriptor_t *ed;
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usbd_status err;
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struct ugen_endpoint *sce;
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u_int8_t niface, nendpt, endptno, endpt;
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struct ugen_endpoint *sce, **sce_cache;
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u_int8_t niface, nendpt, nendpt_cache, endptno, endpt;
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int dir;
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DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno));
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@ -1094,30 +1160,44 @@ ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno)
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if (err)
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return (err);
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/* store an array of endpoint descriptors to clear if the interface
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* change succeeds - these aren't available afterwards */
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sce_cache = malloc(sizeof(struct ugen_endpoint *) * nendpt, M_TEMP,
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M_WAITOK);
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nendpt_cache = nendpt;
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for (endptno = 0; endptno < nendpt; endptno++) {
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ed = usbd_interface2endpoint_descriptor(iface,endptno);
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endpt = ed->bEndpointAddress;
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dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT;
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sce_cache[endptno] = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir];
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}
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/* change setting */
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err = usbd_set_interface(iface, altno);
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if (err) {
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free(sce_cache, M_TEMP);
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return (err);
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}
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err = usbd_endpoint_count(iface, &nendpt);
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if (err)
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panic("ugen_set_interface: endpoint count failed");
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#if defined(__FreeBSD__)
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/* destroy the existing devices, we remake the new ones in a moment */
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ugen_destroy_devnodes(sc);
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#endif
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/* XXX should only do this after setting new altno has succeeded */
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for (endptno = 0; endptno < nendpt; endptno++) {
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ed = usbd_interface2endpoint_descriptor(iface,endptno);
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endpt = ed->bEndpointAddress;
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dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT;
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sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir];
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/* now we can clear the old interface's ugen_endpoints */
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for (endptno = 0; endptno < nendpt_cache; endptno++) {
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sce = sce_cache[endptno];
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sce->sc = 0;
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sce->edesc = 0;
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sce->iface = 0;
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}
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free(sce_cache, M_TEMP);
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/* change setting */
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err = usbd_set_interface(iface, altno);
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if (err)
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return (err);
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err = usbd_endpoint_count(iface, &nendpt);
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if (err)
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return (err);
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/* set the new interface's ugen_endpoints */
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for (endptno = 0; endptno < nendpt; endptno++) {
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ed = usbd_interface2endpoint_descriptor(iface,endptno);
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endpt = ed->bEndpointAddress;
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