1/*-
2 * Copyright (c) 2010-2011 Juli Mallett <jmallett@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/sys/mips/cavium/if_octm.c 232289 2012-02-29 05:48:29Z gonzo $
27 */
28
29/*
30 * Cavium Octeon management port Ethernet devices.
31 */
32
33#include "opt_inet.h"
34
35#include <sys/param.h>
36#include <sys/systm.h>
37#include <sys/bus.h>
38#include <sys/endian.h>
39#include <sys/kernel.h>
40#include <sys/mbuf.h>
41#include <sys/lock.h>
42#include <sys/module.h>
43#include <sys/mutex.h>
44#include <sys/rman.h>
45#include <sys/socket.h>
46#include <sys/sockio.h>
47#include <sys/sysctl.h>
48
49#include <net/bpf.h>
50#include <net/ethernet.h>
51#include <net/if.h>
52#include <net/if_dl.h>
53#include <net/if_media.h>
54#include <net/if_types.h>
55#include <net/if_var.h>
56#include <net/if_vlan_var.h>
57
58#ifdef INET
59#include <netinet/in.h>
60#include <netinet/if_ether.h>
61#endif
62
63#include <contrib/octeon-sdk/cvmx.h>
64#include <contrib/octeon-sdk/cvmx-interrupt.h>
65#include <contrib/octeon-sdk/cvmx-mgmt-port.h>
66
67struct octm_softc {
68 struct ifnet *sc_ifp;
69 device_t sc_dev;
70 unsigned sc_port;
71 int sc_flags;
72 struct ifmedia sc_ifmedia;
73 struct resource *sc_intr;
74 void *sc_intr_cookie;
75};
76
77static void octm_identify(driver_t *, device_t);
78static int octm_probe(device_t);
79static int octm_attach(device_t);
80static int octm_detach(device_t);
81static int octm_shutdown(device_t);
82
83static void octm_init(void *);
84static int octm_transmit(struct ifnet *, struct mbuf *);
85
86static int octm_medchange(struct ifnet *);
87static void octm_medstat(struct ifnet *, struct ifmediareq *);
88
89static int octm_ioctl(struct ifnet *, u_long, caddr_t);
90
91static void octm_rx_intr(void *);
92
93static device_method_t octm_methods[] = {
94 /* Device interface */
95 DEVMETHOD(device_identify, octm_identify),
96 DEVMETHOD(device_probe, octm_probe),
97 DEVMETHOD(device_attach, octm_attach),
98 DEVMETHOD(device_detach, octm_detach),
99 DEVMETHOD(device_shutdown, octm_shutdown),
100
101 { 0, 0 }
102};
103
104static driver_t octm_driver = {
105 "octm",
106 octm_methods,
107 sizeof (struct octm_softc),
108};
109
110static devclass_t octm_devclass;
111
112DRIVER_MODULE(octm, ciu, octm_driver, octm_devclass, 0, 0);
113
114static void
115octm_identify(driver_t *drv, device_t parent)
116{
117 unsigned i;
118
119 if (!octeon_has_feature(OCTEON_FEATURE_MGMT_PORT))
120 return;
121
122 for (i = 0; i < CVMX_MGMT_PORT_NUM_PORTS; i++)
123 BUS_ADD_CHILD(parent, 0, "octm", i);
124}
125
126static int
127octm_probe(device_t dev)
128{
129 cvmx_mgmt_port_result_t result;
130
131 result = cvmx_mgmt_port_initialize(device_get_unit(dev));
132 switch (result) {
133 case CVMX_MGMT_PORT_SUCCESS:
134 break;
135 case CVMX_MGMT_PORT_NO_MEMORY:
136 return (ENOBUFS);
137 case CVMX_MGMT_PORT_INVALID_PARAM:
138 return (ENXIO);
139 case CVMX_MGMT_PORT_INIT_ERROR:
140 return (EIO);
141 }
142
143 device_set_desc(dev, "Cavium Octeon Management Ethernet");
144
145 return (0);
146}
147
148static int
149octm_attach(device_t dev)
150{
151 struct ifnet *ifp;
152 struct octm_softc *sc;
153 cvmx_mixx_irhwm_t mixx_irhwm;
154 cvmx_mixx_intena_t mixx_intena;
155 uint64_t mac;
156 int error;
157 int irq;
158 int rid;
159
160 sc = device_get_softc(dev);
161 sc->sc_dev = dev;
162 sc->sc_port = device_get_unit(dev);
163
164 switch (sc->sc_port) {
165 case 0:
166 irq = CVMX_IRQ_MII;
167 break;
168 case 1:
169 irq = CVMX_IRQ_MII1;
170 break;
171 default:
172 device_printf(dev, "unsupported management port %u.\n", sc->sc_port);
173 return (ENXIO);
174 }
175
176 /*
177 * Set MAC address for this management port.
178 */
179 mac = 0;
180 memcpy((u_int8_t *)&mac + 2, cvmx_sysinfo_get()->mac_addr_base, 6);
181 mac += sc->sc_port;
182
183 cvmx_mgmt_port_set_mac(sc->sc_port, mac);
184
185 /* No watermark for input ring. */
186 mixx_irhwm.u64 = 0;
187 cvmx_write_csr(CVMX_MIXX_IRHWM(sc->sc_port), mixx_irhwm.u64);
188
189 /* Enable input ring interrupts. */
190 mixx_intena.u64 = 0;
191 mixx_intena.s.ithena = 1;
192 cvmx_write_csr(CVMX_MIXX_INTENA(sc->sc_port), mixx_intena.u64);
193
194 /* Allocate and establish interrupt. */
195 rid = 0;
196 sc->sc_intr = bus_alloc_resource(sc->sc_dev, SYS_RES_IRQ, &rid,
197 irq, irq, 1, RF_ACTIVE);
198 if (sc->sc_intr == NULL) {
199 device_printf(dev, "unable to allocate IRQ.\n");
200 return (ENXIO);
201 }
202
203 error = bus_setup_intr(sc->sc_dev, sc->sc_intr, INTR_TYPE_NET, NULL,
204 octm_rx_intr, sc, &sc->sc_intr_cookie);
205 if (error != 0) {
206 device_printf(dev, "unable to setup interrupt.\n");
207 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_intr);
208 return (ENXIO);
209 }
210
211 bus_describe_intr(sc->sc_dev, sc->sc_intr, sc->sc_intr_cookie, "rx");
212
213 /* XXX Possibly should enable TX interrupts. */
214
215 ifp = if_alloc(IFT_ETHER);
216 if (ifp == NULL) {
217 device_printf(dev, "cannot allocate ifnet.\n");
218 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_intr);
219 return (ENOMEM);
220 }
221
222 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
223 ifp->if_mtu = ETHERMTU;
224 ifp->if_init = octm_init;
225 ifp->if_softc = sc;
226 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST | IFF_ALLMULTI;
227 ifp->if_ioctl = octm_ioctl;
228
229 sc->sc_ifp = ifp;
230 sc->sc_flags = ifp->if_flags;
231
232 ifmedia_init(&sc->sc_ifmedia, 0, octm_medchange, octm_medstat);
233
234 ifmedia_add(&sc->sc_ifmedia, IFM_ETHER | IFM_AUTO, 0, NULL);
235 ifmedia_set(&sc->sc_ifmedia, IFM_ETHER | IFM_AUTO);
236
237 ether_ifattach(ifp, (const u_int8_t *)&mac + 2);
238
239 ifp->if_transmit = octm_transmit;
240
241 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
242 ifp->if_capabilities = IFCAP_VLAN_MTU;
243 ifp->if_capenable = ifp->if_capabilities;
244
245 IFQ_SET_MAXLEN(&ifp->if_snd, CVMX_MGMT_PORT_NUM_TX_BUFFERS);
246 ifp->if_snd.ifq_drv_maxlen = CVMX_MGMT_PORT_NUM_TX_BUFFERS;
247 IFQ_SET_READY(&ifp->if_snd);
248
249 return (bus_generic_attach(dev));
250}
251
252static int
253octm_detach(device_t dev)
254{
255 struct octm_softc *sc;
256 cvmx_mgmt_port_result_t result;
257
258 sc = device_get_softc(dev);
259
260 result = cvmx_mgmt_port_initialize(sc->sc_port);
261 switch (result) {
262 case CVMX_MGMT_PORT_SUCCESS:
263 break;
264 case CVMX_MGMT_PORT_NO_MEMORY:
265 return (ENOBUFS);
266 case CVMX_MGMT_PORT_INVALID_PARAM:
267 return (ENXIO);
268 case CVMX_MGMT_PORT_INIT_ERROR:
269 return (EIO);
270 }
271
272 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_intr);
273 /* XXX Incomplete. */
274
275 return (0);
276}
277
278static int
279octm_shutdown(device_t dev)
280{
281 return (octm_detach(dev));
282}
283
284static void
285octm_init(void *arg)
286{
287 struct ifnet *ifp;
288 struct octm_softc *sc;
289 cvmx_mgmt_port_netdevice_flags_t flags;
290 uint64_t mac;
291
292 sc = arg;
293 ifp = sc->sc_ifp;
294
295 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) {
296 cvmx_mgmt_port_disable(sc->sc_port);
297
298 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
299 }
300
301 if (((ifp->if_flags ^ sc->sc_flags) & (IFF_ALLMULTI | IFF_MULTICAST | IFF_PROMISC)) != 0) {
302 flags = 0;
303 if ((ifp->if_flags & IFF_ALLMULTI) != 0)
304 flags |= CVMX_IFF_ALLMULTI;
305 if ((ifp->if_flags & IFF_PROMISC) != 0)
306 flags |= CVMX_IFF_PROMISC;
307 cvmx_mgmt_port_set_multicast_list(sc->sc_port, flags);
308 }
309
310 mac = 0;
311 memcpy((u_int8_t *)&mac + 2, IF_LLADDR(ifp), 6);
312 cvmx_mgmt_port_set_mac(sc->sc_port, mac);
313
314 /* XXX link state? */
315
316 if ((ifp->if_flags & IFF_UP) != 0)
317 cvmx_mgmt_port_enable(sc->sc_port);
318
319 ifp->if_drv_flags |= IFF_DRV_RUNNING;
320 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
321}
322
323static int
324octm_transmit(struct ifnet *ifp, struct mbuf *m)
325{
326 struct octm_softc *sc;
327 cvmx_mgmt_port_result_t result;
328
329 sc = ifp->if_softc;
330
331 if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) !=
332 IFF_DRV_RUNNING) {
333 m_freem(m);
334 return (0);
335 }
336
337 result = cvmx_mgmt_port_sendm(sc->sc_port, m);
338
339 if (result == CVMX_MGMT_PORT_SUCCESS) {
340 ETHER_BPF_MTAP(ifp, m);
341
342 ifp->if_opackets++;
343 ifp->if_obytes += m->m_pkthdr.len;
344 } else
345 ifp->if_oerrors++;
346
347 m_freem(m);
348
349 switch (result) {
350 case CVMX_MGMT_PORT_SUCCESS:
351 return (0);
352 case CVMX_MGMT_PORT_NO_MEMORY:
353 return (ENOBUFS);
354 case CVMX_MGMT_PORT_INVALID_PARAM:
355 return (ENXIO);
356 case CVMX_MGMT_PORT_INIT_ERROR:
357 return (EIO);
358 default:
359 return (EDOOFUS);
360 }
361}
362
363static int
364octm_medchange(struct ifnet *ifp)
365{
366 return (ENOTSUP);
367}
368
369static void
370octm_medstat(struct ifnet *ifp, struct ifmediareq *ifm)
371{
372 struct octm_softc *sc;
373 cvmx_helper_link_info_t link_info;
374
375 sc = ifp->if_softc;
376
377 ifm->ifm_status = IFM_AVALID;
378 ifm->ifm_active = IFT_ETHER;
379
380 link_info = cvmx_mgmt_port_link_get(sc->sc_port);
381 if (!link_info.s.link_up)
382 return;
383
384 ifm->ifm_status |= IFM_ACTIVE;
385
386 switch (link_info.s.speed) {
387 case 10:
388 ifm->ifm_active |= IFM_10_T;
389 break;
390 case 100:
391 ifm->ifm_active |= IFM_100_TX;
392 break;
393 case 1000:
394 ifm->ifm_active |= IFM_1000_T;
395 break;
396 case 10000:
397 ifm->ifm_active |= IFM_10G_T;
398 break;
399 }
400
401 if (link_info.s.full_duplex)
402 ifm->ifm_active |= IFM_FDX;
403 else
404 ifm->ifm_active |= IFM_HDX;
405}
406
407static int
408octm_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
409{
410 struct octm_softc *sc;
411 struct ifreq *ifr;
412#ifdef INET
413 struct ifaddr *ifa;
414#endif
415 int error;
416
417 sc = ifp->if_softc;
418 ifr = (struct ifreq *)data;
419#ifdef INET
420 ifa = (struct ifaddr *)data;
421#endif
422
423 switch (cmd) {
424 case SIOCSIFADDR:
425#ifdef INET
426 /*
427 * Avoid reinitialization unless it's necessary.
428 */
429 if (ifa->ifa_addr->sa_family == AF_INET) {
430 ifp->if_flags |= IFF_UP;
431 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
432 octm_init(sc);
433 arp_ifinit(ifp, ifa);
434
435 return (0);
436 }
437#endif
438 error = ether_ioctl(ifp, cmd, data);
439 if (error != 0)
440 return (error);
441 return (0);
442
443 case SIOCSIFFLAGS:
444 if (ifp->if_flags == sc->sc_flags)
445 return (0);
446 if ((ifp->if_flags & IFF_UP) != 0) {
447 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
448 octm_init(sc);
449 } else {
450 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) {
451 cvmx_mgmt_port_disable(sc->sc_port);
452
453 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
454 }
455 }
456 sc->sc_flags = ifp->if_flags;
457 return (0);
458
459 case SIOCSIFCAP:
460 /*
461 * Just change the capabilities in software, currently none
462 * require reprogramming hardware, they just toggle whether we
463 * make use of already-present facilities in software.
464 */
465 ifp->if_capenable = ifr->ifr_reqcap;
466 return (0);
467
468 case SIOCSIFMTU:
469 cvmx_mgmt_port_set_max_packet_size(sc->sc_port, ifr->ifr_mtu + ifp->if_data.ifi_hdrlen);
470 return (0);
471
472 case SIOCSIFMEDIA:
473 case SIOCGIFMEDIA:
474 error = ifmedia_ioctl(ifp, ifr, &sc->sc_ifmedia, cmd);
475 if (error != 0)
476 return (error);
477 return (0);
478
479 default:
480 error = ether_ioctl(ifp, cmd, data);
481 if (error != 0)
482 return (error);
483 return (0);
484 }
485}
486
487static void
488octm_rx_intr(void *arg)
489{
490 struct octm_softc *sc = arg;
491 cvmx_mixx_isr_t mixx_isr;
492 int len;
493
494 mixx_isr.u64 = cvmx_read_csr(CVMX_MIXX_ISR(sc->sc_port));
495 if (!mixx_isr.s.irthresh) {
496 device_printf(sc->sc_dev, "stray interrupt.\n");
497 return;
498 }
499
500 for (;;) {
501 struct mbuf *m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
502 if (m == NULL) {
503 device_printf(sc->sc_dev, "no memory for receive mbuf.\n");
504 return;
505 }
506
507
508 len = cvmx_mgmt_port_receive(sc->sc_port, MCLBYTES, m->m_data);
509 if (len > 0) {
510 m->m_pkthdr.rcvif = sc->sc_ifp;
511 m->m_pkthdr.len = m->m_len = len;
512
513 sc->sc_ifp->if_ipackets++;
514
515 (*sc->sc_ifp->if_input)(sc->sc_ifp, m);
516
517 continue;
518 }
519
520 m_freem(m);
521
522 if (len == 0)
523 break;
524
525 sc->sc_ifp->if_ierrors++;
526 }
527
528 /* Acknowledge interrupts. */
529 cvmx_write_csr(CVMX_MIXX_ISR(sc->sc_port), mixx_isr.u64);
530 cvmx_read_csr(CVMX_MIXX_ISR(sc->sc_port));
531}
2 * Copyright (c) 2010-2011 Juli Mallett <jmallett@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/sys/mips/cavium/if_octm.c 232289 2012-02-29 05:48:29Z gonzo $
27 */
28
29/*
30 * Cavium Octeon management port Ethernet devices.
31 */
32
33#include "opt_inet.h"
34
35#include <sys/param.h>
36#include <sys/systm.h>
37#include <sys/bus.h>
38#include <sys/endian.h>
39#include <sys/kernel.h>
40#include <sys/mbuf.h>
41#include <sys/lock.h>
42#include <sys/module.h>
43#include <sys/mutex.h>
44#include <sys/rman.h>
45#include <sys/socket.h>
46#include <sys/sockio.h>
47#include <sys/sysctl.h>
48
49#include <net/bpf.h>
50#include <net/ethernet.h>
51#include <net/if.h>
52#include <net/if_dl.h>
53#include <net/if_media.h>
54#include <net/if_types.h>
55#include <net/if_var.h>
56#include <net/if_vlan_var.h>
57
58#ifdef INET
59#include <netinet/in.h>
60#include <netinet/if_ether.h>
61#endif
62
63#include <contrib/octeon-sdk/cvmx.h>
64#include <contrib/octeon-sdk/cvmx-interrupt.h>
65#include <contrib/octeon-sdk/cvmx-mgmt-port.h>
66
67struct octm_softc {
68 struct ifnet *sc_ifp;
69 device_t sc_dev;
70 unsigned sc_port;
71 int sc_flags;
72 struct ifmedia sc_ifmedia;
73 struct resource *sc_intr;
74 void *sc_intr_cookie;
75};
76
77static void octm_identify(driver_t *, device_t);
78static int octm_probe(device_t);
79static int octm_attach(device_t);
80static int octm_detach(device_t);
81static int octm_shutdown(device_t);
82
83static void octm_init(void *);
84static int octm_transmit(struct ifnet *, struct mbuf *);
85
86static int octm_medchange(struct ifnet *);
87static void octm_medstat(struct ifnet *, struct ifmediareq *);
88
89static int octm_ioctl(struct ifnet *, u_long, caddr_t);
90
91static void octm_rx_intr(void *);
92
93static device_method_t octm_methods[] = {
94 /* Device interface */
95 DEVMETHOD(device_identify, octm_identify),
96 DEVMETHOD(device_probe, octm_probe),
97 DEVMETHOD(device_attach, octm_attach),
98 DEVMETHOD(device_detach, octm_detach),
99 DEVMETHOD(device_shutdown, octm_shutdown),
100
101 { 0, 0 }
102};
103
104static driver_t octm_driver = {
105 "octm",
106 octm_methods,
107 sizeof (struct octm_softc),
108};
109
110static devclass_t octm_devclass;
111
112DRIVER_MODULE(octm, ciu, octm_driver, octm_devclass, 0, 0);
113
114static void
115octm_identify(driver_t *drv, device_t parent)
116{
117 unsigned i;
118
119 if (!octeon_has_feature(OCTEON_FEATURE_MGMT_PORT))
120 return;
121
122 for (i = 0; i < CVMX_MGMT_PORT_NUM_PORTS; i++)
123 BUS_ADD_CHILD(parent, 0, "octm", i);
124}
125
126static int
127octm_probe(device_t dev)
128{
129 cvmx_mgmt_port_result_t result;
130
131 result = cvmx_mgmt_port_initialize(device_get_unit(dev));
132 switch (result) {
133 case CVMX_MGMT_PORT_SUCCESS:
134 break;
135 case CVMX_MGMT_PORT_NO_MEMORY:
136 return (ENOBUFS);
137 case CVMX_MGMT_PORT_INVALID_PARAM:
138 return (ENXIO);
139 case CVMX_MGMT_PORT_INIT_ERROR:
140 return (EIO);
141 }
142
143 device_set_desc(dev, "Cavium Octeon Management Ethernet");
144
145 return (0);
146}
147
148static int
149octm_attach(device_t dev)
150{
151 struct ifnet *ifp;
152 struct octm_softc *sc;
153 cvmx_mixx_irhwm_t mixx_irhwm;
154 cvmx_mixx_intena_t mixx_intena;
155 uint64_t mac;
156 int error;
157 int irq;
158 int rid;
159
160 sc = device_get_softc(dev);
161 sc->sc_dev = dev;
162 sc->sc_port = device_get_unit(dev);
163
164 switch (sc->sc_port) {
165 case 0:
166 irq = CVMX_IRQ_MII;
167 break;
168 case 1:
169 irq = CVMX_IRQ_MII1;
170 break;
171 default:
172 device_printf(dev, "unsupported management port %u.\n", sc->sc_port);
173 return (ENXIO);
174 }
175
176 /*
177 * Set MAC address for this management port.
178 */
179 mac = 0;
180 memcpy((u_int8_t *)&mac + 2, cvmx_sysinfo_get()->mac_addr_base, 6);
181 mac += sc->sc_port;
182
183 cvmx_mgmt_port_set_mac(sc->sc_port, mac);
184
185 /* No watermark for input ring. */
186 mixx_irhwm.u64 = 0;
187 cvmx_write_csr(CVMX_MIXX_IRHWM(sc->sc_port), mixx_irhwm.u64);
188
189 /* Enable input ring interrupts. */
190 mixx_intena.u64 = 0;
191 mixx_intena.s.ithena = 1;
192 cvmx_write_csr(CVMX_MIXX_INTENA(sc->sc_port), mixx_intena.u64);
193
194 /* Allocate and establish interrupt. */
195 rid = 0;
196 sc->sc_intr = bus_alloc_resource(sc->sc_dev, SYS_RES_IRQ, &rid,
197 irq, irq, 1, RF_ACTIVE);
198 if (sc->sc_intr == NULL) {
199 device_printf(dev, "unable to allocate IRQ.\n");
200 return (ENXIO);
201 }
202
203 error = bus_setup_intr(sc->sc_dev, sc->sc_intr, INTR_TYPE_NET, NULL,
204 octm_rx_intr, sc, &sc->sc_intr_cookie);
205 if (error != 0) {
206 device_printf(dev, "unable to setup interrupt.\n");
207 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_intr);
208 return (ENXIO);
209 }
210
211 bus_describe_intr(sc->sc_dev, sc->sc_intr, sc->sc_intr_cookie, "rx");
212
213 /* XXX Possibly should enable TX interrupts. */
214
215 ifp = if_alloc(IFT_ETHER);
216 if (ifp == NULL) {
217 device_printf(dev, "cannot allocate ifnet.\n");
218 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_intr);
219 return (ENOMEM);
220 }
221
222 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
223 ifp->if_mtu = ETHERMTU;
224 ifp->if_init = octm_init;
225 ifp->if_softc = sc;
226 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST | IFF_ALLMULTI;
227 ifp->if_ioctl = octm_ioctl;
228
229 sc->sc_ifp = ifp;
230 sc->sc_flags = ifp->if_flags;
231
232 ifmedia_init(&sc->sc_ifmedia, 0, octm_medchange, octm_medstat);
233
234 ifmedia_add(&sc->sc_ifmedia, IFM_ETHER | IFM_AUTO, 0, NULL);
235 ifmedia_set(&sc->sc_ifmedia, IFM_ETHER | IFM_AUTO);
236
237 ether_ifattach(ifp, (const u_int8_t *)&mac + 2);
238
239 ifp->if_transmit = octm_transmit;
240
241 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
242 ifp->if_capabilities = IFCAP_VLAN_MTU;
243 ifp->if_capenable = ifp->if_capabilities;
244
245 IFQ_SET_MAXLEN(&ifp->if_snd, CVMX_MGMT_PORT_NUM_TX_BUFFERS);
246 ifp->if_snd.ifq_drv_maxlen = CVMX_MGMT_PORT_NUM_TX_BUFFERS;
247 IFQ_SET_READY(&ifp->if_snd);
248
249 return (bus_generic_attach(dev));
250}
251
252static int
253octm_detach(device_t dev)
254{
255 struct octm_softc *sc;
256 cvmx_mgmt_port_result_t result;
257
258 sc = device_get_softc(dev);
259
260 result = cvmx_mgmt_port_initialize(sc->sc_port);
261 switch (result) {
262 case CVMX_MGMT_PORT_SUCCESS:
263 break;
264 case CVMX_MGMT_PORT_NO_MEMORY:
265 return (ENOBUFS);
266 case CVMX_MGMT_PORT_INVALID_PARAM:
267 return (ENXIO);
268 case CVMX_MGMT_PORT_INIT_ERROR:
269 return (EIO);
270 }
271
272 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_intr);
273 /* XXX Incomplete. */
274
275 return (0);
276}
277
278static int
279octm_shutdown(device_t dev)
280{
281 return (octm_detach(dev));
282}
283
284static void
285octm_init(void *arg)
286{
287 struct ifnet *ifp;
288 struct octm_softc *sc;
289 cvmx_mgmt_port_netdevice_flags_t flags;
290 uint64_t mac;
291
292 sc = arg;
293 ifp = sc->sc_ifp;
294
295 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) {
296 cvmx_mgmt_port_disable(sc->sc_port);
297
298 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
299 }
300
301 if (((ifp->if_flags ^ sc->sc_flags) & (IFF_ALLMULTI | IFF_MULTICAST | IFF_PROMISC)) != 0) {
302 flags = 0;
303 if ((ifp->if_flags & IFF_ALLMULTI) != 0)
304 flags |= CVMX_IFF_ALLMULTI;
305 if ((ifp->if_flags & IFF_PROMISC) != 0)
306 flags |= CVMX_IFF_PROMISC;
307 cvmx_mgmt_port_set_multicast_list(sc->sc_port, flags);
308 }
309
310 mac = 0;
311 memcpy((u_int8_t *)&mac + 2, IF_LLADDR(ifp), 6);
312 cvmx_mgmt_port_set_mac(sc->sc_port, mac);
313
314 /* XXX link state? */
315
316 if ((ifp->if_flags & IFF_UP) != 0)
317 cvmx_mgmt_port_enable(sc->sc_port);
318
319 ifp->if_drv_flags |= IFF_DRV_RUNNING;
320 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
321}
322
323static int
324octm_transmit(struct ifnet *ifp, struct mbuf *m)
325{
326 struct octm_softc *sc;
327 cvmx_mgmt_port_result_t result;
328
329 sc = ifp->if_softc;
330
331 if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) !=
332 IFF_DRV_RUNNING) {
333 m_freem(m);
334 return (0);
335 }
336
337 result = cvmx_mgmt_port_sendm(sc->sc_port, m);
338
339 if (result == CVMX_MGMT_PORT_SUCCESS) {
340 ETHER_BPF_MTAP(ifp, m);
341
342 ifp->if_opackets++;
343 ifp->if_obytes += m->m_pkthdr.len;
344 } else
345 ifp->if_oerrors++;
346
347 m_freem(m);
348
349 switch (result) {
350 case CVMX_MGMT_PORT_SUCCESS:
351 return (0);
352 case CVMX_MGMT_PORT_NO_MEMORY:
353 return (ENOBUFS);
354 case CVMX_MGMT_PORT_INVALID_PARAM:
355 return (ENXIO);
356 case CVMX_MGMT_PORT_INIT_ERROR:
357 return (EIO);
358 default:
359 return (EDOOFUS);
360 }
361}
362
363static int
364octm_medchange(struct ifnet *ifp)
365{
366 return (ENOTSUP);
367}
368
369static void
370octm_medstat(struct ifnet *ifp, struct ifmediareq *ifm)
371{
372 struct octm_softc *sc;
373 cvmx_helper_link_info_t link_info;
374
375 sc = ifp->if_softc;
376
377 ifm->ifm_status = IFM_AVALID;
378 ifm->ifm_active = IFT_ETHER;
379
380 link_info = cvmx_mgmt_port_link_get(sc->sc_port);
381 if (!link_info.s.link_up)
382 return;
383
384 ifm->ifm_status |= IFM_ACTIVE;
385
386 switch (link_info.s.speed) {
387 case 10:
388 ifm->ifm_active |= IFM_10_T;
389 break;
390 case 100:
391 ifm->ifm_active |= IFM_100_TX;
392 break;
393 case 1000:
394 ifm->ifm_active |= IFM_1000_T;
395 break;
396 case 10000:
397 ifm->ifm_active |= IFM_10G_T;
398 break;
399 }
400
401 if (link_info.s.full_duplex)
402 ifm->ifm_active |= IFM_FDX;
403 else
404 ifm->ifm_active |= IFM_HDX;
405}
406
407static int
408octm_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
409{
410 struct octm_softc *sc;
411 struct ifreq *ifr;
412#ifdef INET
413 struct ifaddr *ifa;
414#endif
415 int error;
416
417 sc = ifp->if_softc;
418 ifr = (struct ifreq *)data;
419#ifdef INET
420 ifa = (struct ifaddr *)data;
421#endif
422
423 switch (cmd) {
424 case SIOCSIFADDR:
425#ifdef INET
426 /*
427 * Avoid reinitialization unless it's necessary.
428 */
429 if (ifa->ifa_addr->sa_family == AF_INET) {
430 ifp->if_flags |= IFF_UP;
431 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
432 octm_init(sc);
433 arp_ifinit(ifp, ifa);
434
435 return (0);
436 }
437#endif
438 error = ether_ioctl(ifp, cmd, data);
439 if (error != 0)
440 return (error);
441 return (0);
442
443 case SIOCSIFFLAGS:
444 if (ifp->if_flags == sc->sc_flags)
445 return (0);
446 if ((ifp->if_flags & IFF_UP) != 0) {
447 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
448 octm_init(sc);
449 } else {
450 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) {
451 cvmx_mgmt_port_disable(sc->sc_port);
452
453 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
454 }
455 }
456 sc->sc_flags = ifp->if_flags;
457 return (0);
458
459 case SIOCSIFCAP:
460 /*
461 * Just change the capabilities in software, currently none
462 * require reprogramming hardware, they just toggle whether we
463 * make use of already-present facilities in software.
464 */
465 ifp->if_capenable = ifr->ifr_reqcap;
466 return (0);
467
468 case SIOCSIFMTU:
469 cvmx_mgmt_port_set_max_packet_size(sc->sc_port, ifr->ifr_mtu + ifp->if_data.ifi_hdrlen);
470 return (0);
471
472 case SIOCSIFMEDIA:
473 case SIOCGIFMEDIA:
474 error = ifmedia_ioctl(ifp, ifr, &sc->sc_ifmedia, cmd);
475 if (error != 0)
476 return (error);
477 return (0);
478
479 default:
480 error = ether_ioctl(ifp, cmd, data);
481 if (error != 0)
482 return (error);
483 return (0);
484 }
485}
486
487static void
488octm_rx_intr(void *arg)
489{
490 struct octm_softc *sc = arg;
491 cvmx_mixx_isr_t mixx_isr;
492 int len;
493
494 mixx_isr.u64 = cvmx_read_csr(CVMX_MIXX_ISR(sc->sc_port));
495 if (!mixx_isr.s.irthresh) {
496 device_printf(sc->sc_dev, "stray interrupt.\n");
497 return;
498 }
499
500 for (;;) {
501 struct mbuf *m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
502 if (m == NULL) {
503 device_printf(sc->sc_dev, "no memory for receive mbuf.\n");
504 return;
505 }
506
507
508 len = cvmx_mgmt_port_receive(sc->sc_port, MCLBYTES, m->m_data);
509 if (len > 0) {
510 m->m_pkthdr.rcvif = sc->sc_ifp;
511 m->m_pkthdr.len = m->m_len = len;
512
513 sc->sc_ifp->if_ipackets++;
514
515 (*sc->sc_ifp->if_input)(sc->sc_ifp, m);
516
517 continue;
518 }
519
520 m_freem(m);
521
522 if (len == 0)
523 break;
524
525 sc->sc_ifp->if_ierrors++;
526 }
527
528 /* Acknowledge interrupts. */
529 cvmx_write_csr(CVMX_MIXX_ISR(sc->sc_port), mixx_isr.u64);
530 cvmx_read_csr(CVMX_MIXX_ISR(sc->sc_port));
531}