if_upl.c revision 1.72
1 /* $NetBSD: if_upl.c,v 1.72 2022/03/03 05:50:22 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 1.72 2022/03/03 05:50:22 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 static int upl_uno_init(struct ifnet *); 115 116 static const struct usbnet_ops upl_ops = { 117 .uno_init = upl_uno_init, 118 .uno_tx_prepare = upl_uno_tx_prepare, 119 .uno_rx_loop = upl_uno_rx_loop, 120 .uno_ioctl = upl_uno_ioctl, 121 #if 0 122 .uno_intr = upl_uno_intr, 123 #endif 124 }; 125 126 static int upl_output(struct ifnet *, struct mbuf *, const struct sockaddr *, 127 const struct rtentry *); 128 static void upl_input(struct ifnet *, struct mbuf *); 129 130 /* 131 * Probe for a Prolific chip. 132 */ 133 static int 134 upl_match(device_t parent, cfdata_t match, void *aux) 135 { 136 struct usb_attach_arg *uaa = aux; 137 138 return usb_lookup(sc_devs, uaa->uaa_vendor, uaa->uaa_product) != NULL ? 139 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 140 } 141 142 static void 143 upl_attach(device_t parent, device_t self, void *aux) 144 { 145 struct usbnet * const un = device_private(self); 146 struct usb_attach_arg *uaa = aux; 147 char *devinfop; 148 struct usbd_device * dev = uaa->uaa_device; 149 usbd_status err; 150 usb_interface_descriptor_t *id; 151 usb_endpoint_descriptor_t *ed; 152 int i; 153 154 DPRINTFN(5,(" : upl_attach: un=%p, dev=%p", un, dev)); 155 156 aprint_naive("\n"); 157 aprint_normal("\n"); 158 devinfop = usbd_devinfo_alloc(dev, 0); 159 aprint_normal_dev(self, "%s\n", devinfop); 160 usbd_devinfo_free(devinfop); 161 162 un->un_dev = self; 163 un->un_udev = dev; 164 un->un_sc = un; 165 un->un_ops = &upl_ops; 166 un->un_rx_xfer_flags = USBD_SHORT_XFER_OK; 167 un->un_tx_xfer_flags = USBD_FORCE_SHORT_XFER; 168 un->un_rx_list_cnt = UPL_RX_LIST_CNT; 169 un->un_tx_list_cnt = UPL_TX_LIST_CNT; 170 un->un_rx_bufsz = UPL_BUFSZ; 171 un->un_tx_bufsz = UPL_BUFSZ; 172 173 err = usbd_set_config_no(dev, UPL_CONFIG_NO, 1); 174 if (err) { 175 aprint_error_dev(self, "failed to set configuration" 176 ", err=%s\n", usbd_errstr(err)); 177 return; 178 } 179 180 err = usbd_device2interface_handle(dev, UPL_IFACE_IDX, &un->un_iface); 181 if (err) { 182 aprint_error_dev(self, "getting interface handle failed\n"); 183 return; 184 } 185 186 id = usbd_get_interface_descriptor(un->un_iface); 187 188 /* Find endpoints. */ 189 for (i = 0; i < id->bNumEndpoints; i++) { 190 ed = usbd_interface2endpoint_descriptor(un->un_iface, i); 191 if (ed == NULL) { 192 aprint_error_dev(self, "couldn't get ep %d\n", i); 193 return; 194 } 195 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 196 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 197 un->un_ed[USBNET_ENDPT_RX] = ed->bEndpointAddress; 198 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 199 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 200 un->un_ed[USBNET_ENDPT_TX] = ed->bEndpointAddress; 201 } 202 } 203 204 if (un->un_ed[USBNET_ENDPT_RX] == 0 || un->un_ed[USBNET_ENDPT_TX] == 0 /*|| 205 un->un_ed[USBNET_ENDPT_INTR] == 0*/) { 206 aprint_error_dev(self, "missing endpoint\n"); 207 return; 208 } 209 210 usbnet_attach(un, "upldet"); 211 212 /* Initialize interface info.*/ 213 struct ifnet *ifp = usbnet_ifp(un); 214 ifp->if_mtu = UPL_BUFSZ; 215 ifp->if_type = IFT_OTHER; 216 ifp->if_addrlen = 0; 217 ifp->if_hdrlen = 0; 218 ifp->if_output = upl_output; 219 ifp->_if_input = upl_input; 220 ifp->if_baudrate = 12000000; 221 ifp->if_dlt = DLT_RAW; 222 223 usbnet_attach_ifp(un, IFF_POINTOPOINT | IFF_NOARP | IFF_SIMPLEX, 224 0, NULL); 225 } 226 227 static void 228 upl_uno_rx_loop(struct usbnet * un, struct usbnet_chain *c, uint32_t total_len) 229 { 230 231 DPRINTFN(9,("%s: %s: enter length=%d\n", 232 device_xname(un->un_dev), __func__, total_len)); 233 234 usbnet_input(un, c->unc_buf, total_len); 235 } 236 237 static unsigned 238 upl_uno_tx_prepare(struct usbnet *un, struct mbuf *m, struct usbnet_chain *c) 239 { 240 int total_len; 241 242 if ((unsigned)m->m_pkthdr.len > un->un_tx_bufsz) 243 return 0; 244 245 m_copydata(m, 0, m->m_pkthdr.len, c->unc_buf); 246 total_len = m->m_pkthdr.len; 247 248 DPRINTFN(10,("%s: %s: total_len=%d\n", 249 device_xname(un->un_dev), __func__, total_len)); 250 251 return total_len; 252 } 253 254 static int 255 upl_uno_init(struct ifnet *ifp) 256 { 257 struct usbnet * const un = ifp->if_softc; 258 int rv; 259 260 if (usbnet_isdying(un)) 261 rv = EIO; 262 else 263 rv = usbnet_init_rx_tx(un); 264 265 return rv; 266 } 267 268 static int 269 upl_uno_ioctl(struct ifnet *ifp, u_long cmd, void *data) 270 { 271 if (cmd == SIOCSIFMTU) { 272 struct ifreq *ifr = data; 273 274 if (ifr->ifr_mtu > UPL_BUFSZ) 275 return EINVAL; 276 } 277 return 0; 278 } 279 280 static int 281 upl_output(struct ifnet *ifp, struct mbuf *m, const struct sockaddr *dst, 282 const struct rtentry *rt0) 283 { 284 struct usbnet * const un __unused = ifp->if_softc; 285 286 DPRINTFN(10,("%s: %s: enter\n", device_xname(un->un_dev), __func__)); 287 288 /* If the queueing discipline needs packet classification, do it now. */ 289 IFQ_CLASSIFY(&ifp->if_snd, m, dst->sa_family); 290 291 /* 292 * Queue message on interface, and start output if interface 293 * not yet active. 294 */ 295 return if_transmit_lock(ifp, m); 296 } 297 298 static void 299 upl_input(struct ifnet *ifp, struct mbuf *m) 300 { 301 #ifdef INET 302 size_t pktlen = m->m_len; 303 int s; 304 305 s = splnet(); 306 if (__predict_false(!pktq_enqueue(ip_pktq, m, 0))) { 307 if_statinc(ifp, if_iqdrops); 308 m_freem(m); 309 } else { 310 if_statadd2(ifp, if_ipackets, 1, if_ibytes, pktlen); 311 } 312 splx(s); 313 #endif 314 } 315 316 #ifdef _MODULE 317 #include "ioconf.c" 318 #endif 319 320 USBNET_MODULE(upl) 321
Indexes created Tue Sep 30 06:09:59 GMT 2025