33
34/*
35 * Modified from the FreeBSD 1.1.5.1 version by:
36 * Andres Vega Garcia
37 * INRIA - Sophia Antipolis, France
38 * avega@sophia.inria.fr
39 */
40
41/*
42 * Promiscuous mode added and interrupt logic slightly changed
43 * to reduce the number of adapter failures. Transceiver select
44 * logic changed to use value from EEPROM. Autoconfiguration
45 * features added.
46 * Done by:
47 * Serge Babkin
48 * Chelindbank (Chelyabinsk, Russia)
49 * babkin@hq.icb.chel.su
50 */
51
52/*
53 * Pccard support for 3C589 by:
54 * HAMADA Naoki
55 * nao@tom-yam.or.jp
56 */
57
58/*
59 * MAINTAINER: Matthew N. Dodd <winter@jurai.net>
60 * <mdodd@FreeBSD.org>
61 */
62
63#include <sys/param.h>
64#include <sys/systm.h>
65#include <sys/mbuf.h>
66#include <sys/socket.h>
67#include <sys/sockio.h>
68#include <sys/bus.h>
69
70#include <machine/bus.h>
71#include <machine/resource.h>
72#include <sys/rman.h>
73
74#include <net/if.h>
75#include <net/if_arp.h>
76#include <net/if_media.h>
77#include <net/if_types.h>
78#include <net/ethernet.h>
79#include <net/bpf.h>
80
81#include <dev/ep/if_epreg.h>
82#include <dev/ep/if_epvar.h>
83
84/* Exported variables */
85devclass_t ep_devclass;
86
87static int ep_media2if_media[] =
88{IFM_10_T, IFM_10_5, IFM_NONE, IFM_10_2, IFM_NONE};
89
90/* if functions */
91static void epinit(void *);
92static int epioctl(struct ifnet *, u_long, caddr_t);
93static void epstart(struct ifnet *);
94static void epwatchdog(struct ifnet *);
95
96static void epstart_locked(struct ifnet *);
97static void epinit_locked(struct ep_softc *);
98
99/* if_media functions */
100static int ep_ifmedia_upd(struct ifnet *);
101static void ep_ifmedia_sts(struct ifnet *, struct ifmediareq *);
102
103static void epstop(struct ep_softc *);
104static void epread(struct ep_softc *);
105static int eeprom_rdy(struct ep_softc *);
106
107#define EP_FTST(sc, f) (sc->stat & (f))
108#define EP_FSET(sc, f) (sc->stat |= (f))
109#define EP_FRST(sc, f) (sc->stat &= ~(f))
110
111static int
112eeprom_rdy(struct ep_softc *sc)
113{
114 int i;
115
116 for (i = 0; is_eeprom_busy(sc) && i < MAX_EEPROMBUSY; i++)
117 DELAY(100);
118
119 if (i >= MAX_EEPROMBUSY) {
120 device_printf(sc->dev, "eeprom failed to come ready.\n");
121 return (ENXIO);
122 }
123
124 return (0);
125}
126
127/*
128 * get_e: gets a 16 bits word from the EEPROM. we must have set the window
129 * before
130 */
131int
132ep_get_e(struct ep_softc *sc, uint16_t offset, uint16_t *result)
133{
134
135 if (eeprom_rdy(sc))
136 return (ENXIO);
137
138 CSR_WRITE_2(sc, EP_W0_EEPROM_COMMAND,
139 (EEPROM_CMD_RD << sc->epb.cmd_off) | offset);
140
141 if (eeprom_rdy(sc))
142 return (ENXIO);
143
144 (*result) = CSR_READ_2(sc, EP_W0_EEPROM_DATA);
145
146 return (0);
147}
148
149static int
150ep_get_macaddr(struct ep_softc *sc, u_char *addr)
151{
152 int i;
153 uint16_t result;
154 int error;
155 uint16_t *macaddr;
156
157 macaddr = (uint16_t *) addr;
158
159 GO_WINDOW(sc, 0);
160 for (i = EEPROM_NODE_ADDR_0; i <= EEPROM_NODE_ADDR_2; i++) {
161 error = ep_get_e(sc, i, &result);
162 if (error)
163 return (error);
164 macaddr[i] = htons(result);
165 }
166 return (0);
167}
168
169int
170ep_alloc(device_t dev)
171{
172 struct ep_softc *sc = device_get_softc(dev);
173 int rid;
174 int error = 0;
175 uint16_t result;
176
177 rid = 0;
178 sc->iobase = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid,
179 RF_ACTIVE);
180 if (!sc->iobase) {
181 device_printf(dev, "No I/O space?!\n");
182 error = ENXIO;
183 goto bad;
184 }
185 rid = 0;
186 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
187 if (!sc->irq) {
188 device_printf(dev, "No irq?!\n");
189 error = ENXIO;
190 goto bad;
191 }
192 sc->dev = dev;
193 sc->stat = 0; /* 16 bit access */
194
195 sc->bst = rman_get_bustag(sc->iobase);
196 sc->bsh = rman_get_bushandle(sc->iobase);
197
198 sc->ep_connectors = 0;
199 sc->ep_connector = 0;
200
201 GO_WINDOW(sc, 0);
202
203 error = ep_get_e(sc, EEPROM_PROD_ID, &result);
204 if (error)
205 goto bad;
206 sc->epb.prod_id = result;
207
208 error = ep_get_e(sc, EEPROM_RESOURCE_CFG, &result);
209 if (error)
210 goto bad;
211 sc->epb.res_cfg = result;
212
213bad:
214 if (error != 0)
215 ep_free(dev);
216 return (error);
217}
218
219void
220ep_get_media(struct ep_softc *sc)
221{
222 uint16_t config;
223
224 GO_WINDOW(sc, 0);
225 config = CSR_READ_2(sc, EP_W0_CONFIG_CTRL);
226 if (config & IS_AUI)
227 sc->ep_connectors |= AUI;
228 if (config & IS_BNC)
229 sc->ep_connectors |= BNC;
230 if (config & IS_UTP)
231 sc->ep_connectors |= UTP;
232
233 if (!(sc->ep_connectors & 7))
234 if (bootverbose)
235 device_printf(sc->dev, "no connectors!\n");
236
237 /*
238 * This works for most of the cards so we'll do it here.
239 * The cards that require something different can override
240 * this later on.
241 */
242 sc->ep_connector = CSR_READ_2(sc, EP_W0_ADDRESS_CFG) >> ACF_CONNECTOR_BITS;
243}
244
245void
246ep_free(device_t dev)
247{
248 struct ep_softc *sc = device_get_softc(dev);
249
250 if (sc->ep_intrhand)
251 bus_teardown_intr(dev, sc->irq, sc->ep_intrhand);
252 if (sc->iobase)
253 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->iobase);
254 if (sc->irq)
255 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq);
256 sc->ep_intrhand = 0;
257 sc->iobase = 0;
258 sc->irq = 0;
259}
260
261static void
262ep_setup_station(struct ep_softc *sc, u_char *enaddr)
263{
264 int i;
265
266 /*
267 * Setup the station address
268 */
269 GO_WINDOW(sc, 2);
270 for (i = 0; i < ETHER_ADDR_LEN; i++)
271 CSR_WRITE_1(sc, EP_W2_ADDR_0 + i, enaddr[i]);
272}
273
274int
275ep_attach(struct ep_softc *sc)
276{
277 struct ifnet *ifp = NULL;
278 struct ifmedia *ifm = NULL;
279 int error;
280
281 sc->gone = 0;
282 EP_LOCK_INIT(sc);
283 if (! (sc->stat & F_ENADDR_SKIP)) {
284 error = ep_get_macaddr(sc, sc->eaddr);
285 if (error) {
286 device_printf(sc->dev, "Unable to get MAC address!\n");
287 EP_LOCK_DESTROY(sc);
288 return (ENXIO);
289 }
290 }
291 ep_setup_station(sc, sc->eaddr);
292 ifp = sc->ifp = if_alloc(IFT_ETHER);
293 if (ifp == NULL) {
294 device_printf(sc->dev, "if_alloc() failed\n");
295 EP_LOCK_DESTROY(sc);
296 return (ENOSPC);
297 }
298
299 ifp->if_softc = sc;
300 if_initname(ifp, device_get_name(sc->dev), device_get_unit(sc->dev));
301 ifp->if_mtu = ETHERMTU;
302 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
303 ifp->if_start = epstart;
304 ifp->if_ioctl = epioctl;
305 ifp->if_watchdog = epwatchdog;
306 ifp->if_init = epinit;
307 ifp->if_snd.ifq_maxlen = IFQ_MAXLEN;
308
309 if (!sc->epb.mii_trans) {
310 ifmedia_init(&sc->ifmedia, 0, ep_ifmedia_upd, ep_ifmedia_sts);
311
312 if (sc->ep_connectors & AUI)
313 ifmedia_add(&sc->ifmedia,
314 IFM_ETHER | IFM_10_5, 0, NULL);
315 if (sc->ep_connectors & UTP)
316 ifmedia_add(&sc->ifmedia,
317 IFM_ETHER | IFM_10_T, 0, NULL);
318 if (sc->ep_connectors & BNC)
319 ifmedia_add(&sc->ifmedia,
320 IFM_ETHER | IFM_10_2, 0, NULL);
321 if (!sc->ep_connectors)
322 ifmedia_add(&sc->ifmedia,
323 IFM_ETHER | IFM_NONE, 0, NULL);
324
325 ifmedia_set(&sc->ifmedia,
326 IFM_ETHER | ep_media2if_media[sc->ep_connector]);
327
328 ifm = &sc->ifmedia;
329 ifm->ifm_media = ifm->ifm_cur->ifm_media;
330 ep_ifmedia_upd(ifp);
331 }
332 ether_ifattach(ifp, sc->eaddr);
333
334#ifdef EP_LOCAL_STATS
335 sc->rx_no_first = sc->rx_no_mbuf = sc->rx_bpf_disc =
336 sc->rx_overrunf = sc->rx_overrunl = sc->tx_underrun = 0;
337#endif
338 EP_FSET(sc, F_RX_FIRST);
339 sc->top = sc->mcur = 0;
340
341 epstop(sc);
342
343 return (0);
344}
345
346int
347ep_detach(device_t dev)
348{
349 struct ep_softc *sc;
350 struct ifnet *ifp;
351
352 sc = device_get_softc(dev);
353 EP_ASSERT_UNLOCKED(sc);
354 ifp = sc->ifp;
355
356 if (sc->gone)
357 return (0);
358 if (bus_child_present(dev))
359 epstop(sc);
360
361 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
362 ether_ifdetach(ifp);
| 33
34/*
35 * Modified from the FreeBSD 1.1.5.1 version by:
36 * Andres Vega Garcia
37 * INRIA - Sophia Antipolis, France
38 * avega@sophia.inria.fr
39 */
40
41/*
42 * Promiscuous mode added and interrupt logic slightly changed
43 * to reduce the number of adapter failures. Transceiver select
44 * logic changed to use value from EEPROM. Autoconfiguration
45 * features added.
46 * Done by:
47 * Serge Babkin
48 * Chelindbank (Chelyabinsk, Russia)
49 * babkin@hq.icb.chel.su
50 */
51
52/*
53 * Pccard support for 3C589 by:
54 * HAMADA Naoki
55 * nao@tom-yam.or.jp
56 */
57
58/*
59 * MAINTAINER: Matthew N. Dodd <winter@jurai.net>
60 * <mdodd@FreeBSD.org>
61 */
62
63#include <sys/param.h>
64#include <sys/systm.h>
65#include <sys/mbuf.h>
66#include <sys/socket.h>
67#include <sys/sockio.h>
68#include <sys/bus.h>
69
70#include <machine/bus.h>
71#include <machine/resource.h>
72#include <sys/rman.h>
73
74#include <net/if.h>
75#include <net/if_arp.h>
76#include <net/if_media.h>
77#include <net/if_types.h>
78#include <net/ethernet.h>
79#include <net/bpf.h>
80
81#include <dev/ep/if_epreg.h>
82#include <dev/ep/if_epvar.h>
83
84/* Exported variables */
85devclass_t ep_devclass;
86
87static int ep_media2if_media[] =
88{IFM_10_T, IFM_10_5, IFM_NONE, IFM_10_2, IFM_NONE};
89
90/* if functions */
91static void epinit(void *);
92static int epioctl(struct ifnet *, u_long, caddr_t);
93static void epstart(struct ifnet *);
94static void epwatchdog(struct ifnet *);
95
96static void epstart_locked(struct ifnet *);
97static void epinit_locked(struct ep_softc *);
98
99/* if_media functions */
100static int ep_ifmedia_upd(struct ifnet *);
101static void ep_ifmedia_sts(struct ifnet *, struct ifmediareq *);
102
103static void epstop(struct ep_softc *);
104static void epread(struct ep_softc *);
105static int eeprom_rdy(struct ep_softc *);
106
107#define EP_FTST(sc, f) (sc->stat & (f))
108#define EP_FSET(sc, f) (sc->stat |= (f))
109#define EP_FRST(sc, f) (sc->stat &= ~(f))
110
111static int
112eeprom_rdy(struct ep_softc *sc)
113{
114 int i;
115
116 for (i = 0; is_eeprom_busy(sc) && i < MAX_EEPROMBUSY; i++)
117 DELAY(100);
118
119 if (i >= MAX_EEPROMBUSY) {
120 device_printf(sc->dev, "eeprom failed to come ready.\n");
121 return (ENXIO);
122 }
123
124 return (0);
125}
126
127/*
128 * get_e: gets a 16 bits word from the EEPROM. we must have set the window
129 * before
130 */
131int
132ep_get_e(struct ep_softc *sc, uint16_t offset, uint16_t *result)
133{
134
135 if (eeprom_rdy(sc))
136 return (ENXIO);
137
138 CSR_WRITE_2(sc, EP_W0_EEPROM_COMMAND,
139 (EEPROM_CMD_RD << sc->epb.cmd_off) | offset);
140
141 if (eeprom_rdy(sc))
142 return (ENXIO);
143
144 (*result) = CSR_READ_2(sc, EP_W0_EEPROM_DATA);
145
146 return (0);
147}
148
149static int
150ep_get_macaddr(struct ep_softc *sc, u_char *addr)
151{
152 int i;
153 uint16_t result;
154 int error;
155 uint16_t *macaddr;
156
157 macaddr = (uint16_t *) addr;
158
159 GO_WINDOW(sc, 0);
160 for (i = EEPROM_NODE_ADDR_0; i <= EEPROM_NODE_ADDR_2; i++) {
161 error = ep_get_e(sc, i, &result);
162 if (error)
163 return (error);
164 macaddr[i] = htons(result);
165 }
166 return (0);
167}
168
169int
170ep_alloc(device_t dev)
171{
172 struct ep_softc *sc = device_get_softc(dev);
173 int rid;
174 int error = 0;
175 uint16_t result;
176
177 rid = 0;
178 sc->iobase = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid,
179 RF_ACTIVE);
180 if (!sc->iobase) {
181 device_printf(dev, "No I/O space?!\n");
182 error = ENXIO;
183 goto bad;
184 }
185 rid = 0;
186 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
187 if (!sc->irq) {
188 device_printf(dev, "No irq?!\n");
189 error = ENXIO;
190 goto bad;
191 }
192 sc->dev = dev;
193 sc->stat = 0; /* 16 bit access */
194
195 sc->bst = rman_get_bustag(sc->iobase);
196 sc->bsh = rman_get_bushandle(sc->iobase);
197
198 sc->ep_connectors = 0;
199 sc->ep_connector = 0;
200
201 GO_WINDOW(sc, 0);
202
203 error = ep_get_e(sc, EEPROM_PROD_ID, &result);
204 if (error)
205 goto bad;
206 sc->epb.prod_id = result;
207
208 error = ep_get_e(sc, EEPROM_RESOURCE_CFG, &result);
209 if (error)
210 goto bad;
211 sc->epb.res_cfg = result;
212
213bad:
214 if (error != 0)
215 ep_free(dev);
216 return (error);
217}
218
219void
220ep_get_media(struct ep_softc *sc)
221{
222 uint16_t config;
223
224 GO_WINDOW(sc, 0);
225 config = CSR_READ_2(sc, EP_W0_CONFIG_CTRL);
226 if (config & IS_AUI)
227 sc->ep_connectors |= AUI;
228 if (config & IS_BNC)
229 sc->ep_connectors |= BNC;
230 if (config & IS_UTP)
231 sc->ep_connectors |= UTP;
232
233 if (!(sc->ep_connectors & 7))
234 if (bootverbose)
235 device_printf(sc->dev, "no connectors!\n");
236
237 /*
238 * This works for most of the cards so we'll do it here.
239 * The cards that require something different can override
240 * this later on.
241 */
242 sc->ep_connector = CSR_READ_2(sc, EP_W0_ADDRESS_CFG) >> ACF_CONNECTOR_BITS;
243}
244
245void
246ep_free(device_t dev)
247{
248 struct ep_softc *sc = device_get_softc(dev);
249
250 if (sc->ep_intrhand)
251 bus_teardown_intr(dev, sc->irq, sc->ep_intrhand);
252 if (sc->iobase)
253 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->iobase);
254 if (sc->irq)
255 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq);
256 sc->ep_intrhand = 0;
257 sc->iobase = 0;
258 sc->irq = 0;
259}
260
261static void
262ep_setup_station(struct ep_softc *sc, u_char *enaddr)
263{
264 int i;
265
266 /*
267 * Setup the station address
268 */
269 GO_WINDOW(sc, 2);
270 for (i = 0; i < ETHER_ADDR_LEN; i++)
271 CSR_WRITE_1(sc, EP_W2_ADDR_0 + i, enaddr[i]);
272}
273
274int
275ep_attach(struct ep_softc *sc)
276{
277 struct ifnet *ifp = NULL;
278 struct ifmedia *ifm = NULL;
279 int error;
280
281 sc->gone = 0;
282 EP_LOCK_INIT(sc);
283 if (! (sc->stat & F_ENADDR_SKIP)) {
284 error = ep_get_macaddr(sc, sc->eaddr);
285 if (error) {
286 device_printf(sc->dev, "Unable to get MAC address!\n");
287 EP_LOCK_DESTROY(sc);
288 return (ENXIO);
289 }
290 }
291 ep_setup_station(sc, sc->eaddr);
292 ifp = sc->ifp = if_alloc(IFT_ETHER);
293 if (ifp == NULL) {
294 device_printf(sc->dev, "if_alloc() failed\n");
295 EP_LOCK_DESTROY(sc);
296 return (ENOSPC);
297 }
298
299 ifp->if_softc = sc;
300 if_initname(ifp, device_get_name(sc->dev), device_get_unit(sc->dev));
301 ifp->if_mtu = ETHERMTU;
302 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
303 ifp->if_start = epstart;
304 ifp->if_ioctl = epioctl;
305 ifp->if_watchdog = epwatchdog;
306 ifp->if_init = epinit;
307 ifp->if_snd.ifq_maxlen = IFQ_MAXLEN;
308
309 if (!sc->epb.mii_trans) {
310 ifmedia_init(&sc->ifmedia, 0, ep_ifmedia_upd, ep_ifmedia_sts);
311
312 if (sc->ep_connectors & AUI)
313 ifmedia_add(&sc->ifmedia,
314 IFM_ETHER | IFM_10_5, 0, NULL);
315 if (sc->ep_connectors & UTP)
316 ifmedia_add(&sc->ifmedia,
317 IFM_ETHER | IFM_10_T, 0, NULL);
318 if (sc->ep_connectors & BNC)
319 ifmedia_add(&sc->ifmedia,
320 IFM_ETHER | IFM_10_2, 0, NULL);
321 if (!sc->ep_connectors)
322 ifmedia_add(&sc->ifmedia,
323 IFM_ETHER | IFM_NONE, 0, NULL);
324
325 ifmedia_set(&sc->ifmedia,
326 IFM_ETHER | ep_media2if_media[sc->ep_connector]);
327
328 ifm = &sc->ifmedia;
329 ifm->ifm_media = ifm->ifm_cur->ifm_media;
330 ep_ifmedia_upd(ifp);
331 }
332 ether_ifattach(ifp, sc->eaddr);
333
334#ifdef EP_LOCAL_STATS
335 sc->rx_no_first = sc->rx_no_mbuf = sc->rx_bpf_disc =
336 sc->rx_overrunf = sc->rx_overrunl = sc->tx_underrun = 0;
337#endif
338 EP_FSET(sc, F_RX_FIRST);
339 sc->top = sc->mcur = 0;
340
341 epstop(sc);
342
343 return (0);
344}
345
346int
347ep_detach(device_t dev)
348{
349 struct ep_softc *sc;
350 struct ifnet *ifp;
351
352 sc = device_get_softc(dev);
353 EP_ASSERT_UNLOCKED(sc);
354 ifp = sc->ifp;
355
356 if (sc->gone)
357 return (0);
358 if (bus_child_present(dev))
359 epstop(sc);
360
361 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
362 ether_ifdetach(ifp);
|
367 EP_LOCK_DESTROY(sc);
368
369 return (0);
370}
371
372static void
373epinit(void *xsc)
374{
375 struct ep_softc *sc = xsc;
376 EP_LOCK(sc);
377 epinit_locked(sc);
378 EP_UNLOCK(sc);
379}
380
381/*
382 * The order in here seems important. Otherwise we may not receive
383 * interrupts. ?!
384 */
385static void
386epinit_locked(struct ep_softc *sc)
387{
388 struct ifnet *ifp = sc->ifp;
389 int i;
390
391 if (sc->gone)
392 return;
393
394 EP_ASSERT_LOCKED(sc);
395 EP_BUSY_WAIT(sc);
396
397 GO_WINDOW(sc, 0);
398 CSR_WRITE_2(sc, EP_COMMAND, STOP_TRANSCEIVER);
399 GO_WINDOW(sc, 4);
400 CSR_WRITE_2(sc, EP_W4_MEDIA_TYPE, DISABLE_UTP);
401 GO_WINDOW(sc, 0);
402
403 /* Disable the card */
404 CSR_WRITE_2(sc, EP_W0_CONFIG_CTRL, 0);
405
406 /* Enable the card */
407 CSR_WRITE_2(sc, EP_W0_CONFIG_CTRL, ENABLE_DRQ_IRQ);
408
409 GO_WINDOW(sc, 2);
410 /* Reload the ether_addr. */
411 ep_setup_station(sc, IFP2ENADDR(sc->ifp));
412
413 CSR_WRITE_2(sc, EP_COMMAND, RX_RESET);
414 CSR_WRITE_2(sc, EP_COMMAND, TX_RESET);
415 EP_BUSY_WAIT(sc);
416
417 /* Window 1 is operating window */
418 GO_WINDOW(sc, 1);
419 for (i = 0; i < 31; i++)
420 CSR_READ_1(sc, EP_W1_TX_STATUS);
421
422 /* get rid of stray intr's */
423 CSR_WRITE_2(sc, EP_COMMAND, ACK_INTR | 0xff);
424
425 CSR_WRITE_2(sc, EP_COMMAND, SET_RD_0_MASK | S_5_INTS);
426 CSR_WRITE_2(sc, EP_COMMAND, SET_INTR_MASK | S_5_INTS);
427
428 if (ifp->if_flags & IFF_PROMISC)
429 CSR_WRITE_2(sc, EP_COMMAND, SET_RX_FILTER | FIL_INDIVIDUAL |
430 FIL_MULTICAST | FIL_BRDCST | FIL_PROMISC);
431 else
432 CSR_WRITE_2(sc, EP_COMMAND, SET_RX_FILTER | FIL_INDIVIDUAL |
433 FIL_MULTICAST | FIL_BRDCST);
434
435 if (!sc->epb.mii_trans)
436 ep_ifmedia_upd(ifp);
437
438 CSR_WRITE_2(sc, EP_COMMAND, RX_ENABLE);
439 CSR_WRITE_2(sc, EP_COMMAND, TX_ENABLE);
440
441 ifp->if_drv_flags |= IFF_DRV_RUNNING;
442 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; /* just in case */
443
444#ifdef EP_LOCAL_STATS
445 sc->rx_no_first = sc->rx_no_mbuf =
446 sc->rx_overrunf = sc->rx_overrunl = sc->tx_underrun = 0;
447#endif
448 EP_FSET(sc, F_RX_FIRST);
449 if (sc->top) {
450 m_freem(sc->top);
451 sc->top = sc->mcur = 0;
452 }
453 CSR_WRITE_2(sc, EP_COMMAND, SET_RX_EARLY_THRESH | RX_INIT_EARLY_THRESH);
454 CSR_WRITE_2(sc, EP_COMMAND, SET_TX_START_THRESH | 16);
455
456 GO_WINDOW(sc, 1);
457 epstart_locked(ifp);
458}
459
460static void
461epstart(struct ifnet *ifp)
462{
463 struct ep_softc *sc;
464 sc = ifp->if_softc;
465 EP_LOCK(sc);
466 epstart_locked(ifp);
467 EP_UNLOCK(sc);
468}
469
470static void
471epstart_locked(struct ifnet *ifp)
472{
473 struct ep_softc *sc;
474 u_int len;
475 struct mbuf *m, *m0;
476 int pad;
477
478 sc = ifp->if_softc;
479 if (sc->gone)
480 return;
481 EP_ASSERT_LOCKED(sc);
482 EP_BUSY_WAIT(sc);
483 if (ifp->if_drv_flags & IFF_DRV_OACTIVE)
484 return;
485startagain:
486 /* Sneak a peek at the next packet */
487 IF_DEQUEUE(&ifp->if_snd, m0);
488 if (m0 == NULL)
489 return;
490 for (len = 0, m = m0; m != NULL; m = m->m_next)
491 len += m->m_len;
492
493 pad = (4 - len) & 3;
494
495 /*
496 * The 3c509 automatically pads short packets to minimum
497 * ethernet length, but we drop packets that are too large.
498 * Perhaps we should truncate them instead?
499 */
500 if (len + pad > ETHER_MAX_LEN) {
501 /* packet is obviously too large: toss it */
502 ifp->if_oerrors++;
503 m_freem(m0);
504 goto readcheck;
505 }
506 if (CSR_READ_2(sc, EP_W1_FREE_TX) < len + pad + 4) {
507 /* no room in FIFO */
508 CSR_WRITE_2(sc, EP_COMMAND, SET_TX_AVAIL_THRESH | (len + pad + 4));
509 /* make sure */
510 if (CSR_READ_2(sc, EP_W1_FREE_TX) < len + pad + 4) {
511 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
512 IF_PREPEND(&ifp->if_snd, m0);
513 goto done;
514 }
515 } else
516 CSR_WRITE_2(sc, EP_COMMAND,
517 SET_TX_AVAIL_THRESH | EP_THRESH_DISABLE);
518
519 /* XXX 4.x and earlier would splhigh here */
520
521 CSR_WRITE_2(sc, EP_W1_TX_PIO_WR_1, len);
522 /* Second dword meaningless */
523 CSR_WRITE_2(sc, EP_W1_TX_PIO_WR_1, 0x0);
524
525 if (EP_FTST(sc, F_ACCESS_32_BITS)) {
526 for (m = m0; m != NULL; m = m->m_next) {
527 if (m->m_len > 3)
528 CSR_WRITE_MULTI_4(sc, EP_W1_TX_PIO_WR_1,
529 mtod(m, uint32_t *), m->m_len / 4);
530 if (m->m_len & 3)
531 CSR_WRITE_MULTI_1(sc, EP_W1_TX_PIO_WR_1,
532 mtod(m, uint8_t *)+(m->m_len & (~3)),
533 m->m_len & 3);
534 }
535 } else {
536 for (m = m0; m != NULL; m = m->m_next) {
537 if (m->m_len > 1)
538 CSR_WRITE_MULTI_2(sc, EP_W1_TX_PIO_WR_1,
539 mtod(m, uint16_t *), m->m_len / 2);
540 if (m->m_len & 1)
541 CSR_WRITE_1(sc, EP_W1_TX_PIO_WR_1,
542 *(mtod(m, uint8_t *)+m->m_len - 1));
543 }
544 }
545
546 while (pad--)
547 CSR_WRITE_1(sc, EP_W1_TX_PIO_WR_1, 0); /* Padding */
548
549 /* XXX and drop splhigh here */
550
551 BPF_MTAP(ifp, m0);
552
553 ifp->if_timer = 2;
554 ifp->if_opackets++;
555 m_freem(m0);
556
557 /*
558 * Is another packet coming in? We don't want to overflow
559 * the tiny RX fifo.
560 */
561readcheck:
562 if (CSR_READ_2(sc, EP_W1_RX_STATUS) & RX_BYTES_MASK) {
563 /*
564 * we check if we have packets left, in that case
565 * we prepare to come back later
566 */
567 if (ifp->if_snd.ifq_head)
568 CSR_WRITE_2(sc, EP_COMMAND, SET_TX_AVAIL_THRESH | 8);
569 goto done;
570 }
571 goto startagain;
572done:;
573 return;
574}
575
576void
577ep_intr(void *arg)
578{
579 struct ep_softc *sc;
580 int status;
581 struct ifnet *ifp;
582
583 sc = (struct ep_softc *) arg;
584 EP_LOCK(sc);
585 /* XXX 4.x splbio'd here to reduce interruptability */
586
587 /*
588 * quick fix: Try to detect an interrupt when the card goes away.
589 */
590 if (sc->gone || CSR_READ_2(sc, EP_STATUS) == 0xffff) {
591 EP_UNLOCK(sc);
592 return;
593 }
594 ifp = sc->ifp;
595
596 CSR_WRITE_2(sc, EP_COMMAND, SET_INTR_MASK); /* disable all Ints */
597
598rescan:
599
600 while ((status = CSR_READ_2(sc, EP_STATUS)) & S_5_INTS) {
601
602 /* first acknowledge all interrupt sources */
603 CSR_WRITE_2(sc, EP_COMMAND, ACK_INTR | (status & S_MASK));
604
605 if (status & (S_RX_COMPLETE | S_RX_EARLY))
606 epread(sc);
607 if (status & S_TX_AVAIL) {
608 /* we need ACK */
609 ifp->if_timer = 0;
610 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
611 GO_WINDOW(sc, 1);
612 CSR_READ_2(sc, EP_W1_FREE_TX);
613 epstart_locked(ifp);
614 }
615 if (status & S_CARD_FAILURE) {
616 ifp->if_timer = 0;
617#ifdef EP_LOCAL_STATS
618 device_printf(sc->dev, "\n\tStatus: %x\n", status);
619 GO_WINDOW(sc, 4);
620 printf("\tFIFO Diagnostic: %x\n",
621 CSR_READ_2(sc, EP_W4_FIFO_DIAG));
622 printf("\tStat: %x\n", sc->stat);
623 printf("\tIpackets=%d, Opackets=%d\n",
624 ifp->if_ipackets, ifp->if_opackets);
625 printf("\tNOF=%d, NOMB=%d, RXOF=%d, RXOL=%d, TXU=%d\n",
626 sc->rx_no_first, sc->rx_no_mbuf, sc->rx_overrunf,
627 sc->rx_overrunl, sc->tx_underrun);
628#else
629
630#ifdef DIAGNOSTIC
631 device_printf(sc->dev,
632 "Status: %x (input buffer overflow)\n", status);
633#else
634 ++ifp->if_ierrors;
635#endif
636
637#endif
638 epinit_locked(sc);
639 EP_UNLOCK(sc);
640 return;
641 }
642 if (status & S_TX_COMPLETE) {
643 ifp->if_timer = 0;
644 /*
645 * We need ACK. We do it at the end.
646 *
647 * We need to read TX_STATUS until we get a
648 * 0 status in order to turn off the interrupt flag.
649 */
650 while ((status = CSR_READ_1(sc, EP_W1_TX_STATUS)) &
651 TXS_COMPLETE) {
652 if (status & TXS_SUCCES_INTR_REQ)
653 ; /* nothing */
654 else if (status &
655 (TXS_UNDERRUN | TXS_JABBER |
656 TXS_MAX_COLLISION)) {
657 CSR_WRITE_2(sc, EP_COMMAND, TX_RESET);
658 if (status & TXS_UNDERRUN) {
659#ifdef EP_LOCAL_STATS
660 sc->tx_underrun++;
661#endif
662 } else {
663 if (status & TXS_JABBER);
664 else
665 ++ifp->if_collisions;
666 /* TXS_MAX_COLLISION
667 * we shouldn't get
668 * here
669 */
670 }
671 ++ifp->if_oerrors;
672 CSR_WRITE_2(sc, EP_COMMAND, TX_ENABLE);
673 /*
674 * To have a tx_avail_int but giving
675 * the chance to the Reception
676 */
677 if (ifp->if_snd.ifq_head)
678 CSR_WRITE_2(sc, EP_COMMAND,
679 SET_TX_AVAIL_THRESH | 8);
680 }
681 /* pops up the next status */
682 CSR_WRITE_1(sc, EP_W1_TX_STATUS, 0x0);
683 } /* while */
684 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
685 GO_WINDOW(sc, 1);
686 CSR_READ_2(sc, EP_W1_FREE_TX);
687 epstart_locked(ifp);
688 } /* end TX_COMPLETE */
689 }
690
691 CSR_WRITE_2(sc, EP_COMMAND, C_INTR_LATCH); /* ACK int Latch */
692
693 if ((status = CSR_READ_2(sc, EP_STATUS)) & S_5_INTS)
694 goto rescan;
695
696 /* re-enable Ints */
697 CSR_WRITE_2(sc, EP_COMMAND, SET_INTR_MASK | S_5_INTS);
698 EP_UNLOCK(sc);
699}
700
701static void
702epread(struct ep_softc *sc)
703{
704 struct mbuf *top, *mcur, *m;
705 struct ifnet *ifp;
706 int lenthisone;
707 short rx_fifo2, status;
708 short rx_fifo;
709
710/* XXX Must be called with sc locked */
711
712 ifp = sc->ifp;
713 status = CSR_READ_2(sc, EP_W1_RX_STATUS);
714
715read_again:
716
717 if (status & ERR_RX) {
718 ++ifp->if_ierrors;
719 if (status & ERR_RX_OVERRUN) {
720 /*
721 * We can think the rx latency is actually
722 * greather than we expect
723 */
724#ifdef EP_LOCAL_STATS
725 if (EP_FTST(sc, F_RX_FIRST))
726 sc->rx_overrunf++;
727 else
728 sc->rx_overrunl++;
729#endif
730 }
731 goto out;
732 }
733 rx_fifo = rx_fifo2 = status & RX_BYTES_MASK;
734
735 if (EP_FTST(sc, F_RX_FIRST)) {
736 MGETHDR(m, M_DONTWAIT, MT_DATA);
737 if (!m)
738 goto out;
739 if (rx_fifo >= MINCLSIZE)
740 MCLGET(m, M_DONTWAIT);
741 sc->top = sc->mcur = top = m;
742#define EROUND ((sizeof(struct ether_header) + 3) & ~3)
743#define EOFF (EROUND - sizeof(struct ether_header))
744 top->m_data += EOFF;
745
746 /* Read what should be the header. */
747 CSR_READ_MULTI_2(sc, EP_W1_RX_PIO_RD_1,
748 mtod(top, uint16_t *), sizeof(struct ether_header) / 2);
749 top->m_len = sizeof(struct ether_header);
750 rx_fifo -= sizeof(struct ether_header);
751 sc->cur_len = rx_fifo2;
752 } else {
753 /* come here if we didn't have a complete packet last time */
754 top = sc->top;
755 m = sc->mcur;
756 sc->cur_len += rx_fifo2;
757 }
758
759 /* Reads what is left in the RX FIFO */
760 while (rx_fifo > 0) {
761 lenthisone = min(rx_fifo, M_TRAILINGSPACE(m));
762 if (lenthisone == 0) { /* no room in this one */
763 mcur = m;
764 MGET(m, M_DONTWAIT, MT_DATA);
765 if (!m)
766 goto out;
767 if (rx_fifo >= MINCLSIZE)
768 MCLGET(m, M_DONTWAIT);
769 m->m_len = 0;
770 mcur->m_next = m;
771 lenthisone = min(rx_fifo, M_TRAILINGSPACE(m));
772 }
773 if (EP_FTST(sc, F_ACCESS_32_BITS)) {
774 /* default for EISA configured cards */
775 CSR_READ_MULTI_4(sc, EP_W1_RX_PIO_RD_1,
776 (uint32_t *)(mtod(m, caddr_t)+m->m_len),
777 lenthisone / 4);
778 m->m_len += (lenthisone & ~3);
779 if (lenthisone & 3)
780 CSR_READ_MULTI_1(sc, EP_W1_RX_PIO_RD_1,
781 mtod(m, caddr_t)+m->m_len, lenthisone & 3);
782 m->m_len += (lenthisone & 3);
783 } else {
784 CSR_READ_MULTI_2(sc, EP_W1_RX_PIO_RD_1,
785 (uint16_t *)(mtod(m, caddr_t)+m->m_len),
786 lenthisone / 2);
787 m->m_len += lenthisone;
788 if (lenthisone & 1)
789 *(mtod(m, caddr_t)+m->m_len - 1) =
790 CSR_READ_1(sc, EP_W1_RX_PIO_RD_1);
791 }
792 rx_fifo -= lenthisone;
793 }
794
795 if (status & ERR_RX_INCOMPLETE) {
796 /* we haven't received the complete packet */
797 sc->mcur = m;
798#ifdef EP_LOCAL_STATS
799 /* to know how often we come here */
800 sc->rx_no_first++;
801#endif
802 EP_FRST(sc, F_RX_FIRST);
803 status = CSR_READ_2(sc, EP_W1_RX_STATUS);
804 if (!status & ERR_RX_INCOMPLETE) {
805 /*
806 * We see if by now, the packet has completly
807 * arrived
808 */
809 goto read_again;
810 }
811 CSR_WRITE_2(sc, EP_COMMAND,
812 SET_RX_EARLY_THRESH | RX_NEXT_EARLY_THRESH);
813 return;
814 }
815 CSR_WRITE_2(sc, EP_COMMAND, RX_DISCARD_TOP_PACK);
816 ++ifp->if_ipackets;
817 EP_FSET(sc, F_RX_FIRST);
818 top->m_pkthdr.rcvif = sc->ifp;
819 top->m_pkthdr.len = sc->cur_len;
820
821 /*
822 * Drop locks before calling if_input() since it may re-enter
823 * ep_start() in the netisr case. This would result in a
824 * lock reversal. Better performance might be obtained by
825 * chaining all packets received, dropping the lock, and then
826 * calling if_input() on each one.
827 */
828 EP_UNLOCK(sc);
829 (*ifp->if_input) (ifp, top);
830 EP_LOCK(sc);
831 sc->top = 0;
832 EP_BUSY_WAIT(sc);
833 CSR_WRITE_2(sc, EP_COMMAND, SET_RX_EARLY_THRESH | RX_INIT_EARLY_THRESH);
834 return;
835
836out:
837 CSR_WRITE_2(sc, EP_COMMAND, RX_DISCARD_TOP_PACK);
838 if (sc->top) {
839 m_freem(sc->top);
840 sc->top = 0;
841#ifdef EP_LOCAL_STATS
842 sc->rx_no_mbuf++;
843#endif
844 }
845 EP_FSET(sc, F_RX_FIRST);
846 EP_BUSY_WAIT(sc);
847 CSR_WRITE_2(sc, EP_COMMAND, SET_RX_EARLY_THRESH | RX_INIT_EARLY_THRESH);
848}
849
850static int
851ep_ifmedia_upd(struct ifnet *ifp)
852{
853 struct ep_softc *sc = ifp->if_softc;
854 int i = 0, j;
855
856 GO_WINDOW(sc, 0);
857 CSR_WRITE_2(sc, EP_COMMAND, STOP_TRANSCEIVER);
858 GO_WINDOW(sc, 4);
859 CSR_WRITE_2(sc, EP_W4_MEDIA_TYPE, DISABLE_UTP);
860 GO_WINDOW(sc, 0);
861
862 switch (IFM_SUBTYPE(sc->ifmedia.ifm_media)) {
863 case IFM_10_T:
864 if (sc->ep_connectors & UTP) {
865 i = ACF_CONNECTOR_UTP;
866 GO_WINDOW(sc, 4);
867 CSR_WRITE_2(sc, EP_W4_MEDIA_TYPE, ENABLE_UTP);
868 }
869 break;
870 case IFM_10_2:
871 if (sc->ep_connectors & BNC) {
872 i = ACF_CONNECTOR_BNC;
873 CSR_WRITE_2(sc, EP_COMMAND, START_TRANSCEIVER);
874 DELAY(DELAY_MULTIPLE * 1000);
875 }
876 break;
877 case IFM_10_5:
878 if (sc->ep_connectors & AUI)
879 i = ACF_CONNECTOR_AUI;
880 break;
881 default:
882 i = sc->ep_connector;
883 device_printf(sc->dev,
884 "strange connector type in EEPROM: assuming AUI\n");
885 }
886
887 GO_WINDOW(sc, 0);
888 j = CSR_READ_2(sc, EP_W0_ADDRESS_CFG) & 0x3fff;
889 CSR_WRITE_2(sc, EP_W0_ADDRESS_CFG, j | (i << ACF_CONNECTOR_BITS));
890
891 return (0);
892}
893
894static void
895ep_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
896{
897 struct ep_softc *sc = ifp->if_softc;
898
899 ifmr->ifm_active = sc->ifmedia.ifm_media;
900}
901
902static int
903epioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
904{
905 struct ep_softc *sc = ifp->if_softc;
906 struct ifreq *ifr = (struct ifreq *) data;
907 int error = 0;
908
909 switch (cmd) {
910 case SIOCSIFFLAGS:
911 EP_LOCK(sc);
912 if (((ifp->if_flags & IFF_UP) == 0) &&
913 (ifp->if_drv_flags & IFF_DRV_RUNNING)) {
914 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
915 epstop(sc);
916 } else
917 /* reinitialize card on any parameter change */
918 epinit_locked(sc);
919 EP_UNLOCK(sc);
920 break;
921#ifdef notdef
922 case SIOCGHWADDR:
923 bcopy((caddr_t)sc->sc_addr, (caddr_t)&ifr->ifr_data,
924 sizeof(sc->sc_addr));
925 break;
926#endif
927 case SIOCADDMULTI:
928 case SIOCDELMULTI:
929 /*
930 * The Etherlink III has no programmable multicast
931 * filter. We always initialize the card to be
932 * promiscuous to multicast, since we're always a
933 * member of the ALL-SYSTEMS group, so there's no
934 * need to process SIOC*MULTI requests.
935 */
936 error = 0;
937 break;
938 case SIOCSIFMEDIA:
939 case SIOCGIFMEDIA:
940 if (!sc->epb.mii_trans)
941 error = ifmedia_ioctl(ifp, ifr, &sc->ifmedia, cmd);
942 else
943 error = EINVAL;
944 break;
945 default:
946 error = ether_ioctl(ifp, cmd, data);
947 break;
948 }
949 return (error);
950}
951
952static void
953epwatchdog(struct ifnet *ifp)
954{
955 struct ep_softc *sc = ifp->if_softc;
956
957 if (sc->gone)
958 return;
959 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
960 epstart(ifp);
961 ep_intr(ifp->if_softc);
962}
963
964static void
965epstop(struct ep_softc *sc)
966{
967 if (sc->gone)
968 return;
969 CSR_WRITE_2(sc, EP_COMMAND, RX_DISABLE);
970 CSR_WRITE_2(sc, EP_COMMAND, RX_DISCARD_TOP_PACK);
971 EP_BUSY_WAIT(sc);
972
973 CSR_WRITE_2(sc, EP_COMMAND, TX_DISABLE);
974 CSR_WRITE_2(sc, EP_COMMAND, STOP_TRANSCEIVER);
975 DELAY(800);
976
977 CSR_WRITE_2(sc, EP_COMMAND, RX_RESET);
978 EP_BUSY_WAIT(sc);
979 CSR_WRITE_2(sc, EP_COMMAND, TX_RESET);
980 EP_BUSY_WAIT(sc);
981
982 CSR_WRITE_2(sc, EP_COMMAND, C_INTR_LATCH);
983 CSR_WRITE_2(sc, EP_COMMAND, SET_RD_0_MASK);
984 CSR_WRITE_2(sc, EP_COMMAND, SET_INTR_MASK);
985 CSR_WRITE_2(sc, EP_COMMAND, SET_RX_FILTER);
986}
| 367 EP_LOCK_DESTROY(sc);
368
369 return (0);
370}
371
372static void
373epinit(void *xsc)
374{
375 struct ep_softc *sc = xsc;
376 EP_LOCK(sc);
377 epinit_locked(sc);
378 EP_UNLOCK(sc);
379}
380
381/*
382 * The order in here seems important. Otherwise we may not receive
383 * interrupts. ?!
384 */
385static void
386epinit_locked(struct ep_softc *sc)
387{
388 struct ifnet *ifp = sc->ifp;
389 int i;
390
391 if (sc->gone)
392 return;
393
394 EP_ASSERT_LOCKED(sc);
395 EP_BUSY_WAIT(sc);
396
397 GO_WINDOW(sc, 0);
398 CSR_WRITE_2(sc, EP_COMMAND, STOP_TRANSCEIVER);
399 GO_WINDOW(sc, 4);
400 CSR_WRITE_2(sc, EP_W4_MEDIA_TYPE, DISABLE_UTP);
401 GO_WINDOW(sc, 0);
402
403 /* Disable the card */
404 CSR_WRITE_2(sc, EP_W0_CONFIG_CTRL, 0);
405
406 /* Enable the card */
407 CSR_WRITE_2(sc, EP_W0_CONFIG_CTRL, ENABLE_DRQ_IRQ);
408
409 GO_WINDOW(sc, 2);
410 /* Reload the ether_addr. */
411 ep_setup_station(sc, IFP2ENADDR(sc->ifp));
412
413 CSR_WRITE_2(sc, EP_COMMAND, RX_RESET);
414 CSR_WRITE_2(sc, EP_COMMAND, TX_RESET);
415 EP_BUSY_WAIT(sc);
416
417 /* Window 1 is operating window */
418 GO_WINDOW(sc, 1);
419 for (i = 0; i < 31; i++)
420 CSR_READ_1(sc, EP_W1_TX_STATUS);
421
422 /* get rid of stray intr's */
423 CSR_WRITE_2(sc, EP_COMMAND, ACK_INTR | 0xff);
424
425 CSR_WRITE_2(sc, EP_COMMAND, SET_RD_0_MASK | S_5_INTS);
426 CSR_WRITE_2(sc, EP_COMMAND, SET_INTR_MASK | S_5_INTS);
427
428 if (ifp->if_flags & IFF_PROMISC)
429 CSR_WRITE_2(sc, EP_COMMAND, SET_RX_FILTER | FIL_INDIVIDUAL |
430 FIL_MULTICAST | FIL_BRDCST | FIL_PROMISC);
431 else
432 CSR_WRITE_2(sc, EP_COMMAND, SET_RX_FILTER | FIL_INDIVIDUAL |
433 FIL_MULTICAST | FIL_BRDCST);
434
435 if (!sc->epb.mii_trans)
436 ep_ifmedia_upd(ifp);
437
438 CSR_WRITE_2(sc, EP_COMMAND, RX_ENABLE);
439 CSR_WRITE_2(sc, EP_COMMAND, TX_ENABLE);
440
441 ifp->if_drv_flags |= IFF_DRV_RUNNING;
442 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; /* just in case */
443
444#ifdef EP_LOCAL_STATS
445 sc->rx_no_first = sc->rx_no_mbuf =
446 sc->rx_overrunf = sc->rx_overrunl = sc->tx_underrun = 0;
447#endif
448 EP_FSET(sc, F_RX_FIRST);
449 if (sc->top) {
450 m_freem(sc->top);
451 sc->top = sc->mcur = 0;
452 }
453 CSR_WRITE_2(sc, EP_COMMAND, SET_RX_EARLY_THRESH | RX_INIT_EARLY_THRESH);
454 CSR_WRITE_2(sc, EP_COMMAND, SET_TX_START_THRESH | 16);
455
456 GO_WINDOW(sc, 1);
457 epstart_locked(ifp);
458}
459
460static void
461epstart(struct ifnet *ifp)
462{
463 struct ep_softc *sc;
464 sc = ifp->if_softc;
465 EP_LOCK(sc);
466 epstart_locked(ifp);
467 EP_UNLOCK(sc);
468}
469
470static void
471epstart_locked(struct ifnet *ifp)
472{
473 struct ep_softc *sc;
474 u_int len;
475 struct mbuf *m, *m0;
476 int pad;
477
478 sc = ifp->if_softc;
479 if (sc->gone)
480 return;
481 EP_ASSERT_LOCKED(sc);
482 EP_BUSY_WAIT(sc);
483 if (ifp->if_drv_flags & IFF_DRV_OACTIVE)
484 return;
485startagain:
486 /* Sneak a peek at the next packet */
487 IF_DEQUEUE(&ifp->if_snd, m0);
488 if (m0 == NULL)
489 return;
490 for (len = 0, m = m0; m != NULL; m = m->m_next)
491 len += m->m_len;
492
493 pad = (4 - len) & 3;
494
495 /*
496 * The 3c509 automatically pads short packets to minimum
497 * ethernet length, but we drop packets that are too large.
498 * Perhaps we should truncate them instead?
499 */
500 if (len + pad > ETHER_MAX_LEN) {
501 /* packet is obviously too large: toss it */
502 ifp->if_oerrors++;
503 m_freem(m0);
504 goto readcheck;
505 }
506 if (CSR_READ_2(sc, EP_W1_FREE_TX) < len + pad + 4) {
507 /* no room in FIFO */
508 CSR_WRITE_2(sc, EP_COMMAND, SET_TX_AVAIL_THRESH | (len + pad + 4));
509 /* make sure */
510 if (CSR_READ_2(sc, EP_W1_FREE_TX) < len + pad + 4) {
511 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
512 IF_PREPEND(&ifp->if_snd, m0);
513 goto done;
514 }
515 } else
516 CSR_WRITE_2(sc, EP_COMMAND,
517 SET_TX_AVAIL_THRESH | EP_THRESH_DISABLE);
518
519 /* XXX 4.x and earlier would splhigh here */
520
521 CSR_WRITE_2(sc, EP_W1_TX_PIO_WR_1, len);
522 /* Second dword meaningless */
523 CSR_WRITE_2(sc, EP_W1_TX_PIO_WR_1, 0x0);
524
525 if (EP_FTST(sc, F_ACCESS_32_BITS)) {
526 for (m = m0; m != NULL; m = m->m_next) {
527 if (m->m_len > 3)
528 CSR_WRITE_MULTI_4(sc, EP_W1_TX_PIO_WR_1,
529 mtod(m, uint32_t *), m->m_len / 4);
530 if (m->m_len & 3)
531 CSR_WRITE_MULTI_1(sc, EP_W1_TX_PIO_WR_1,
532 mtod(m, uint8_t *)+(m->m_len & (~3)),
533 m->m_len & 3);
534 }
535 } else {
536 for (m = m0; m != NULL; m = m->m_next) {
537 if (m->m_len > 1)
538 CSR_WRITE_MULTI_2(sc, EP_W1_TX_PIO_WR_1,
539 mtod(m, uint16_t *), m->m_len / 2);
540 if (m->m_len & 1)
541 CSR_WRITE_1(sc, EP_W1_TX_PIO_WR_1,
542 *(mtod(m, uint8_t *)+m->m_len - 1));
543 }
544 }
545
546 while (pad--)
547 CSR_WRITE_1(sc, EP_W1_TX_PIO_WR_1, 0); /* Padding */
548
549 /* XXX and drop splhigh here */
550
551 BPF_MTAP(ifp, m0);
552
553 ifp->if_timer = 2;
554 ifp->if_opackets++;
555 m_freem(m0);
556
557 /*
558 * Is another packet coming in? We don't want to overflow
559 * the tiny RX fifo.
560 */
561readcheck:
562 if (CSR_READ_2(sc, EP_W1_RX_STATUS) & RX_BYTES_MASK) {
563 /*
564 * we check if we have packets left, in that case
565 * we prepare to come back later
566 */
567 if (ifp->if_snd.ifq_head)
568 CSR_WRITE_2(sc, EP_COMMAND, SET_TX_AVAIL_THRESH | 8);
569 goto done;
570 }
571 goto startagain;
572done:;
573 return;
574}
575
576void
577ep_intr(void *arg)
578{
579 struct ep_softc *sc;
580 int status;
581 struct ifnet *ifp;
582
583 sc = (struct ep_softc *) arg;
584 EP_LOCK(sc);
585 /* XXX 4.x splbio'd here to reduce interruptability */
586
587 /*
588 * quick fix: Try to detect an interrupt when the card goes away.
589 */
590 if (sc->gone || CSR_READ_2(sc, EP_STATUS) == 0xffff) {
591 EP_UNLOCK(sc);
592 return;
593 }
594 ifp = sc->ifp;
595
596 CSR_WRITE_2(sc, EP_COMMAND, SET_INTR_MASK); /* disable all Ints */
597
598rescan:
599
600 while ((status = CSR_READ_2(sc, EP_STATUS)) & S_5_INTS) {
601
602 /* first acknowledge all interrupt sources */
603 CSR_WRITE_2(sc, EP_COMMAND, ACK_INTR | (status & S_MASK));
604
605 if (status & (S_RX_COMPLETE | S_RX_EARLY))
606 epread(sc);
607 if (status & S_TX_AVAIL) {
608 /* we need ACK */
609 ifp->if_timer = 0;
610 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
611 GO_WINDOW(sc, 1);
612 CSR_READ_2(sc, EP_W1_FREE_TX);
613 epstart_locked(ifp);
614 }
615 if (status & S_CARD_FAILURE) {
616 ifp->if_timer = 0;
617#ifdef EP_LOCAL_STATS
618 device_printf(sc->dev, "\n\tStatus: %x\n", status);
619 GO_WINDOW(sc, 4);
620 printf("\tFIFO Diagnostic: %x\n",
621 CSR_READ_2(sc, EP_W4_FIFO_DIAG));
622 printf("\tStat: %x\n", sc->stat);
623 printf("\tIpackets=%d, Opackets=%d\n",
624 ifp->if_ipackets, ifp->if_opackets);
625 printf("\tNOF=%d, NOMB=%d, RXOF=%d, RXOL=%d, TXU=%d\n",
626 sc->rx_no_first, sc->rx_no_mbuf, sc->rx_overrunf,
627 sc->rx_overrunl, sc->tx_underrun);
628#else
629
630#ifdef DIAGNOSTIC
631 device_printf(sc->dev,
632 "Status: %x (input buffer overflow)\n", status);
633#else
634 ++ifp->if_ierrors;
635#endif
636
637#endif
638 epinit_locked(sc);
639 EP_UNLOCK(sc);
640 return;
641 }
642 if (status & S_TX_COMPLETE) {
643 ifp->if_timer = 0;
644 /*
645 * We need ACK. We do it at the end.
646 *
647 * We need to read TX_STATUS until we get a
648 * 0 status in order to turn off the interrupt flag.
649 */
650 while ((status = CSR_READ_1(sc, EP_W1_TX_STATUS)) &
651 TXS_COMPLETE) {
652 if (status & TXS_SUCCES_INTR_REQ)
653 ; /* nothing */
654 else if (status &
655 (TXS_UNDERRUN | TXS_JABBER |
656 TXS_MAX_COLLISION)) {
657 CSR_WRITE_2(sc, EP_COMMAND, TX_RESET);
658 if (status & TXS_UNDERRUN) {
659#ifdef EP_LOCAL_STATS
660 sc->tx_underrun++;
661#endif
662 } else {
663 if (status & TXS_JABBER);
664 else
665 ++ifp->if_collisions;
666 /* TXS_MAX_COLLISION
667 * we shouldn't get
668 * here
669 */
670 }
671 ++ifp->if_oerrors;
672 CSR_WRITE_2(sc, EP_COMMAND, TX_ENABLE);
673 /*
674 * To have a tx_avail_int but giving
675 * the chance to the Reception
676 */
677 if (ifp->if_snd.ifq_head)
678 CSR_WRITE_2(sc, EP_COMMAND,
679 SET_TX_AVAIL_THRESH | 8);
680 }
681 /* pops up the next status */
682 CSR_WRITE_1(sc, EP_W1_TX_STATUS, 0x0);
683 } /* while */
684 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
685 GO_WINDOW(sc, 1);
686 CSR_READ_2(sc, EP_W1_FREE_TX);
687 epstart_locked(ifp);
688 } /* end TX_COMPLETE */
689 }
690
691 CSR_WRITE_2(sc, EP_COMMAND, C_INTR_LATCH); /* ACK int Latch */
692
693 if ((status = CSR_READ_2(sc, EP_STATUS)) & S_5_INTS)
694 goto rescan;
695
696 /* re-enable Ints */
697 CSR_WRITE_2(sc, EP_COMMAND, SET_INTR_MASK | S_5_INTS);
698 EP_UNLOCK(sc);
699}
700
701static void
702epread(struct ep_softc *sc)
703{
704 struct mbuf *top, *mcur, *m;
705 struct ifnet *ifp;
706 int lenthisone;
707 short rx_fifo2, status;
708 short rx_fifo;
709
710/* XXX Must be called with sc locked */
711
712 ifp = sc->ifp;
713 status = CSR_READ_2(sc, EP_W1_RX_STATUS);
714
715read_again:
716
717 if (status & ERR_RX) {
718 ++ifp->if_ierrors;
719 if (status & ERR_RX_OVERRUN) {
720 /*
721 * We can think the rx latency is actually
722 * greather than we expect
723 */
724#ifdef EP_LOCAL_STATS
725 if (EP_FTST(sc, F_RX_FIRST))
726 sc->rx_overrunf++;
727 else
728 sc->rx_overrunl++;
729#endif
730 }
731 goto out;
732 }
733 rx_fifo = rx_fifo2 = status & RX_BYTES_MASK;
734
735 if (EP_FTST(sc, F_RX_FIRST)) {
736 MGETHDR(m, M_DONTWAIT, MT_DATA);
737 if (!m)
738 goto out;
739 if (rx_fifo >= MINCLSIZE)
740 MCLGET(m, M_DONTWAIT);
741 sc->top = sc->mcur = top = m;
742#define EROUND ((sizeof(struct ether_header) + 3) & ~3)
743#define EOFF (EROUND - sizeof(struct ether_header))
744 top->m_data += EOFF;
745
746 /* Read what should be the header. */
747 CSR_READ_MULTI_2(sc, EP_W1_RX_PIO_RD_1,
748 mtod(top, uint16_t *), sizeof(struct ether_header) / 2);
749 top->m_len = sizeof(struct ether_header);
750 rx_fifo -= sizeof(struct ether_header);
751 sc->cur_len = rx_fifo2;
752 } else {
753 /* come here if we didn't have a complete packet last time */
754 top = sc->top;
755 m = sc->mcur;
756 sc->cur_len += rx_fifo2;
757 }
758
759 /* Reads what is left in the RX FIFO */
760 while (rx_fifo > 0) {
761 lenthisone = min(rx_fifo, M_TRAILINGSPACE(m));
762 if (lenthisone == 0) { /* no room in this one */
763 mcur = m;
764 MGET(m, M_DONTWAIT, MT_DATA);
765 if (!m)
766 goto out;
767 if (rx_fifo >= MINCLSIZE)
768 MCLGET(m, M_DONTWAIT);
769 m->m_len = 0;
770 mcur->m_next = m;
771 lenthisone = min(rx_fifo, M_TRAILINGSPACE(m));
772 }
773 if (EP_FTST(sc, F_ACCESS_32_BITS)) {
774 /* default for EISA configured cards */
775 CSR_READ_MULTI_4(sc, EP_W1_RX_PIO_RD_1,
776 (uint32_t *)(mtod(m, caddr_t)+m->m_len),
777 lenthisone / 4);
778 m->m_len += (lenthisone & ~3);
779 if (lenthisone & 3)
780 CSR_READ_MULTI_1(sc, EP_W1_RX_PIO_RD_1,
781 mtod(m, caddr_t)+m->m_len, lenthisone & 3);
782 m->m_len += (lenthisone & 3);
783 } else {
784 CSR_READ_MULTI_2(sc, EP_W1_RX_PIO_RD_1,
785 (uint16_t *)(mtod(m, caddr_t)+m->m_len),
786 lenthisone / 2);
787 m->m_len += lenthisone;
788 if (lenthisone & 1)
789 *(mtod(m, caddr_t)+m->m_len - 1) =
790 CSR_READ_1(sc, EP_W1_RX_PIO_RD_1);
791 }
792 rx_fifo -= lenthisone;
793 }
794
795 if (status & ERR_RX_INCOMPLETE) {
796 /* we haven't received the complete packet */
797 sc->mcur = m;
798#ifdef EP_LOCAL_STATS
799 /* to know how often we come here */
800 sc->rx_no_first++;
801#endif
802 EP_FRST(sc, F_RX_FIRST);
803 status = CSR_READ_2(sc, EP_W1_RX_STATUS);
804 if (!status & ERR_RX_INCOMPLETE) {
805 /*
806 * We see if by now, the packet has completly
807 * arrived
808 */
809 goto read_again;
810 }
811 CSR_WRITE_2(sc, EP_COMMAND,
812 SET_RX_EARLY_THRESH | RX_NEXT_EARLY_THRESH);
813 return;
814 }
815 CSR_WRITE_2(sc, EP_COMMAND, RX_DISCARD_TOP_PACK);
816 ++ifp->if_ipackets;
817 EP_FSET(sc, F_RX_FIRST);
818 top->m_pkthdr.rcvif = sc->ifp;
819 top->m_pkthdr.len = sc->cur_len;
820
821 /*
822 * Drop locks before calling if_input() since it may re-enter
823 * ep_start() in the netisr case. This would result in a
824 * lock reversal. Better performance might be obtained by
825 * chaining all packets received, dropping the lock, and then
826 * calling if_input() on each one.
827 */
828 EP_UNLOCK(sc);
829 (*ifp->if_input) (ifp, top);
830 EP_LOCK(sc);
831 sc->top = 0;
832 EP_BUSY_WAIT(sc);
833 CSR_WRITE_2(sc, EP_COMMAND, SET_RX_EARLY_THRESH | RX_INIT_EARLY_THRESH);
834 return;
835
836out:
837 CSR_WRITE_2(sc, EP_COMMAND, RX_DISCARD_TOP_PACK);
838 if (sc->top) {
839 m_freem(sc->top);
840 sc->top = 0;
841#ifdef EP_LOCAL_STATS
842 sc->rx_no_mbuf++;
843#endif
844 }
845 EP_FSET(sc, F_RX_FIRST);
846 EP_BUSY_WAIT(sc);
847 CSR_WRITE_2(sc, EP_COMMAND, SET_RX_EARLY_THRESH | RX_INIT_EARLY_THRESH);
848}
849
850static int
851ep_ifmedia_upd(struct ifnet *ifp)
852{
853 struct ep_softc *sc = ifp->if_softc;
854 int i = 0, j;
855
856 GO_WINDOW(sc, 0);
857 CSR_WRITE_2(sc, EP_COMMAND, STOP_TRANSCEIVER);
858 GO_WINDOW(sc, 4);
859 CSR_WRITE_2(sc, EP_W4_MEDIA_TYPE, DISABLE_UTP);
860 GO_WINDOW(sc, 0);
861
862 switch (IFM_SUBTYPE(sc->ifmedia.ifm_media)) {
863 case IFM_10_T:
864 if (sc->ep_connectors & UTP) {
865 i = ACF_CONNECTOR_UTP;
866 GO_WINDOW(sc, 4);
867 CSR_WRITE_2(sc, EP_W4_MEDIA_TYPE, ENABLE_UTP);
868 }
869 break;
870 case IFM_10_2:
871 if (sc->ep_connectors & BNC) {
872 i = ACF_CONNECTOR_BNC;
873 CSR_WRITE_2(sc, EP_COMMAND, START_TRANSCEIVER);
874 DELAY(DELAY_MULTIPLE * 1000);
875 }
876 break;
877 case IFM_10_5:
878 if (sc->ep_connectors & AUI)
879 i = ACF_CONNECTOR_AUI;
880 break;
881 default:
882 i = sc->ep_connector;
883 device_printf(sc->dev,
884 "strange connector type in EEPROM: assuming AUI\n");
885 }
886
887 GO_WINDOW(sc, 0);
888 j = CSR_READ_2(sc, EP_W0_ADDRESS_CFG) & 0x3fff;
889 CSR_WRITE_2(sc, EP_W0_ADDRESS_CFG, j | (i << ACF_CONNECTOR_BITS));
890
891 return (0);
892}
893
894static void
895ep_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
896{
897 struct ep_softc *sc = ifp->if_softc;
898
899 ifmr->ifm_active = sc->ifmedia.ifm_media;
900}
901
902static int
903epioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
904{
905 struct ep_softc *sc = ifp->if_softc;
906 struct ifreq *ifr = (struct ifreq *) data;
907 int error = 0;
908
909 switch (cmd) {
910 case SIOCSIFFLAGS:
911 EP_LOCK(sc);
912 if (((ifp->if_flags & IFF_UP) == 0) &&
913 (ifp->if_drv_flags & IFF_DRV_RUNNING)) {
914 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
915 epstop(sc);
916 } else
917 /* reinitialize card on any parameter change */
918 epinit_locked(sc);
919 EP_UNLOCK(sc);
920 break;
921#ifdef notdef
922 case SIOCGHWADDR:
923 bcopy((caddr_t)sc->sc_addr, (caddr_t)&ifr->ifr_data,
924 sizeof(sc->sc_addr));
925 break;
926#endif
927 case SIOCADDMULTI:
928 case SIOCDELMULTI:
929 /*
930 * The Etherlink III has no programmable multicast
931 * filter. We always initialize the card to be
932 * promiscuous to multicast, since we're always a
933 * member of the ALL-SYSTEMS group, so there's no
934 * need to process SIOC*MULTI requests.
935 */
936 error = 0;
937 break;
938 case SIOCSIFMEDIA:
939 case SIOCGIFMEDIA:
940 if (!sc->epb.mii_trans)
941 error = ifmedia_ioctl(ifp, ifr, &sc->ifmedia, cmd);
942 else
943 error = EINVAL;
944 break;
945 default:
946 error = ether_ioctl(ifp, cmd, data);
947 break;
948 }
949 return (error);
950}
951
952static void
953epwatchdog(struct ifnet *ifp)
954{
955 struct ep_softc *sc = ifp->if_softc;
956
957 if (sc->gone)
958 return;
959 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
960 epstart(ifp);
961 ep_intr(ifp->if_softc);
962}
963
964static void
965epstop(struct ep_softc *sc)
966{
967 if (sc->gone)
968 return;
969 CSR_WRITE_2(sc, EP_COMMAND, RX_DISABLE);
970 CSR_WRITE_2(sc, EP_COMMAND, RX_DISCARD_TOP_PACK);
971 EP_BUSY_WAIT(sc);
972
973 CSR_WRITE_2(sc, EP_COMMAND, TX_DISABLE);
974 CSR_WRITE_2(sc, EP_COMMAND, STOP_TRANSCEIVER);
975 DELAY(800);
976
977 CSR_WRITE_2(sc, EP_COMMAND, RX_RESET);
978 EP_BUSY_WAIT(sc);
979 CSR_WRITE_2(sc, EP_COMMAND, TX_RESET);
980 EP_BUSY_WAIT(sc);
981
982 CSR_WRITE_2(sc, EP_COMMAND, C_INTR_LATCH);
983 CSR_WRITE_2(sc, EP_COMMAND, SET_RD_0_MASK);
984 CSR_WRITE_2(sc, EP_COMMAND, SET_INTR_MASK);
985 CSR_WRITE_2(sc, EP_COMMAND, SET_RX_FILTER);
986}
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