1 /* $NetBSD: if_upl.c,v 1.77 2022/03/03 05:56:28 riastradh Exp $ */ 2 3 /* 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Lennart Augustsson (lennart (at) augustsson.net) at 9 * Carlstedt Research & Technology. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Prolific PL2301/PL2302 driver 35 */ 36 37 #include <sys/cdefs.h> 38 __KERNEL_RCSID(0, "$NetBSD: if_upl.c,v 1.77 2022/03/03 05:56:28 riastradh Exp $"); 39 40 #ifdef _KERNEL_OPT 41 #include "opt_inet.h" 42 #include "opt_usb.h" 43 #endif 44 45 #include <sys/param.h> 46 47 #include <dev/usb/usbnet.h> 48 49 #include <net/if_types.h> 50 51 #ifdef INET 52 #include <netinet/in.h> 53 #include <netinet/in_var.h> 54 #include <netinet/if_inarp.h> 55 #endif 56 57 /* 58 * 7 6 5 4 3 2 1 0 59 * tx rx 1 0 60 * 1110 0000 rxdata 61 * 1010 0000 idle 62 * 0010 0000 tx over 63 * 0110 tx over + rxd 64 */ 65 66 #define UPL_RXDATA 0x40 67 #define UPL_TXOK 0x80 68 69 #define UPL_CONFIG_NO 1 70 #define UPL_IFACE_IDX 0 71 72 /***/ 73 74 #define UPL_INTR_INTERVAL 20 75 76 #define UPL_BUFSZ 1024 77 78 #define UPL_RX_LIST_CNT 1 79 #define UPL_TX_LIST_CNT 1 80 81 #ifdef UPL_DEBUG 82 #define DPRINTF(x) if (upldebug) printf x 83 #define DPRINTFN(n,x) if (upldebug >= (n)) printf x 84 int upldebug = 0; 85 #else 86 #define DPRINTF(x) 87 #define DPRINTFN(n,x) 88 #endif 89 90 /* 91 * Various supported device vendors/products. 92 */ 93 static const struct usb_devno sc_devs[] = { 94 { USB_VENDOR_PROLIFIC, USB_PRODUCT_PROLIFIC_PL2301 }, 95 { USB_VENDOR_PROLIFIC, USB_PRODUCT_PROLIFIC_PL2302 }, 96 { USB_VENDOR_PROLIFIC, USB_PRODUCT_PROLIFIC_PL25A1 }, 97 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U258 }, 98 { USB_VENDOR_NI, USB_PRODUCT_NI_HTOH_7825 } 99 }; 100 101 static int upl_match(device_t, cfdata_t, void *); 102 static void upl_attach(device_t, device_t, void *); 103 104 CFATTACH_DECL_NEW(upl, sizeof(struct usbnet), upl_match, upl_attach, 105 usbnet_detach, usbnet_activate); 106 107 #if 0 108 static void upl_uno_intr(struct usbnet *, usbd_status); 109 #endif 110 static void upl_uno_rx_loop(struct usbnet *, struct usbnet_chain *, uint32_t); 111 static unsigned upl_uno_tx_prepare(struct usbnet *, struct mbuf *, 112 struct usbnet_chain *); 113 static int upl_uno_ioctl(struct ifnet *, u_long, void *); 114 115 static const struct usbnet_ops upl_ops = { 116 .uno_tx_prepare = upl_uno_tx_prepare, 117 .uno_rx_loop = upl_uno_rx_loop, 118 .uno_ioctl = upl_uno_ioctl, 119 #if 0 120 .uno_intr = upl_uno_intr, 121 #endif 122 }; 123 124 static int upl_output(struct ifnet *, struct mbuf *, const struct sockaddr *, 125 const struct rtentry *); 126 static void upl_input(struct ifnet *, struct mbuf *); 127 128 /* 129 * Probe for a Prolific chip. 130 */ 131 static int 132 upl_match(device_t parent, cfdata_t match, void *aux) 133 { 134 struct usb_attach_arg *uaa = aux; 135 136 return usb_lookup(sc_devs, uaa->uaa_vendor, uaa->uaa_product) != NULL ? 137 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 138 } 139 140 static void 141 upl_attach(device_t parent, device_t self, void *aux) 142 { 143 struct usbnet * const un = device_private(self); 144 struct usb_attach_arg *uaa = aux; 145 char *devinfop; 146 struct usbd_device * dev = uaa->uaa_device; 147 usbd_status err; 148 usb_interface_descriptor_t *id; 149 usb_endpoint_descriptor_t *ed; 150 int i; 151 152 DPRINTFN(5,(" : upl_attach: un=%p, dev=%p", un, dev)); 153 154 aprint_naive("\n"); 155 aprint_normal("\n"); 156 devinfop = usbd_devinfo_alloc(dev, 0); 157 aprint_normal_dev(self, "%s\n", devinfop); 158 usbd_devinfo_free(devinfop); 159 160 un->un_dev = self; 161 un->un_udev = dev; 162 un->un_sc = un; 163 un->un_ops = &upl_ops; 164 un->un_rx_xfer_flags = USBD_SHORT_XFER_OK; 165 un->un_tx_xfer_flags = USBD_FORCE_SHORT_XFER; 166 un->un_rx_list_cnt = UPL_RX_LIST_CNT; 167 un->un_tx_list_cnt = UPL_TX_LIST_CNT; 168 un->un_rx_bufsz = UPL_BUFSZ; 169 un->un_tx_bufsz = UPL_BUFSZ; 170 171 err = usbd_set_config_no(dev, UPL_CONFIG_NO, 1); 172 if (err) { 173 aprint_error_dev(self, "failed to set configuration" 174 ", err=%s\n", usbd_errstr(err)); 175 return; 176 } 177 178 err = usbd_device2interface_handle(dev, UPL_IFACE_IDX, &un->un_iface); 179 if (err) { 180 aprint_error_dev(self, "getting interface handle failed\n"); 181 return; 182 } 183 184 id = usbd_get_interface_descriptor(un->un_iface); 185 186 /* Find endpoints. */ 187 for (i = 0; i < id->bNumEndpoints; i++) { 188 ed = usbd_interface2endpoint_descriptor(un->un_iface, i); 189 if (ed == NULL) { 190 aprint_error_dev(self, "couldn't get ep %d\n", i); 191 return; 192 } 193 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 194 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 195 un->un_ed[USBNET_ENDPT_RX] = ed->bEndpointAddress; 196 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 197 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 198 un->un_ed[USBNET_ENDPT_TX] = ed->bEndpointAddress; 199 } 200 } 201 202 if (un->un_ed[USBNET_ENDPT_RX] == 0 || un->un_ed[USBNET_ENDPT_TX] == 0 /*|| 203 un->un_ed[USBNET_ENDPT_INTR] == 0*/) { 204 aprint_error_dev(self, "missing endpoint\n"); 205 return; 206 } 207 208 usbnet_attach(un); 209 210 /* Initialize interface info.*/ 211 struct ifnet *ifp = usbnet_ifp(un); 212 ifp->if_mtu = UPL_BUFSZ; 213 ifp->if_type = IFT_OTHER; 214 ifp->if_addrlen = 0; 215 ifp->if_hdrlen = 0; 216 ifp->if_output = upl_output; 217 ifp->_if_input = upl_input; 218 ifp->if_baudrate = 12000000; 219 ifp->if_dlt = DLT_RAW; 220 221 usbnet_attach_ifp(un, IFF_POINTOPOINT | IFF_NOARP | IFF_SIMPLEX, 222 0, NULL); 223 } 224 225 static void 226 upl_uno_rx_loop(struct usbnet * un, struct usbnet_chain *c, uint32_t total_len) 227 { 228 229 DPRINTFN(9,("%s: %s: enter length=%d\n", 230 device_xname(un->un_dev), __func__, total_len)); 231 232 usbnet_input(un, c->unc_buf, total_len); 233 } 234 235 static unsigned 236 upl_uno_tx_prepare(struct usbnet *un, struct mbuf *m, struct usbnet_chain *c) 237 { 238 int total_len; 239 240 if ((unsigned)m->m_pkthdr.len > un->un_tx_bufsz) 241 return 0; 242 243 m_copydata(m, 0, m->m_pkthdr.len, c->unc_buf); 244 total_len = m->m_pkthdr.len; 245 246 DPRINTFN(10,("%s: %s: total_len=%d\n", 247 device_xname(un->un_dev), __func__, total_len)); 248 249 return total_len; 250 } 251 252 static int 253 upl_uno_ioctl(struct ifnet *ifp, u_long cmd, void *data) 254 { 255 if (cmd == SIOCSIFMTU) { 256 struct ifreq *ifr = data; 257 258 if (ifr->ifr_mtu > UPL_BUFSZ) 259 return EINVAL; 260 } 261 return 0; 262 } 263 264 static int 265 upl_output(struct ifnet *ifp, struct mbuf *m, const struct sockaddr *dst, 266 const struct rtentry *rt0) 267 { 268 struct usbnet * const un __unused = ifp->if_softc; 269 270 DPRINTFN(10,("%s: %s: enter\n", device_xname(un->un_dev), __func__)); 271 272 /* If the queueing discipline needs packet classification, do it now. */ 273 IFQ_CLASSIFY(&ifp->if_snd, m, dst->sa_family); 274 275 /* 276 * Queue message on interface, and start output if interface 277 * not yet active. 278 */ 279 return if_transmit_lock(ifp, m); 280 } 281 282 static void 283 upl_input(struct ifnet *ifp, struct mbuf *m) 284 { 285 #ifdef INET 286 size_t pktlen = m->m_len; 287 int s; 288 289 s = splnet(); 290 if (__predict_false(!pktq_enqueue(ip_pktq, m, 0))) { 291 if_statinc(ifp, if_iqdrops); 292 m_freem(m); 293 } else { 294 if_statadd2(ifp, if_ipackets, 1, if_ibytes, pktlen); 295 } 296 splx(s); 297 #endif 298 } 299 300 #ifdef _MODULE 301 #include "ioconf.c" 302 #endif 303 304 USBNET_MODULE(upl) 305
Indexes created Mon Sep 29 03:10:08 GMT 2025