1 | /* |
---|
2 | * RTEMS driver for Opencores Ethernet Controller |
---|
3 | * |
---|
4 | * Weakly based on dec21140 rtems driver and open_eth linux driver |
---|
5 | * Written by Jiri Gaisler, Gaisler Research |
---|
6 | * |
---|
7 | * The license and distribution terms for this file may be |
---|
8 | * found in found in the file LICENSE in this distribution or at |
---|
9 | * http://www.OARcorp.com/rtems/license.html. |
---|
10 | * |
---|
11 | * $Id$ |
---|
12 | */ |
---|
13 | |
---|
14 | #include <rtems.h> |
---|
15 | |
---|
16 | #define GRETH_SUPPORTED |
---|
17 | #include <bsp.h> |
---|
18 | |
---|
19 | #include <inttypes.h> |
---|
20 | #include <errno.h> |
---|
21 | #include <stdlib.h> |
---|
22 | #include <stdio.h> |
---|
23 | #include <stdarg.h> |
---|
24 | #include <rtems/error.h> |
---|
25 | #include <rtems/rtems_bsdnet.h> |
---|
26 | #include "greth.h" |
---|
27 | |
---|
28 | #include <sys/param.h> |
---|
29 | #include <sys/mbuf.h> |
---|
30 | |
---|
31 | #include <sys/socket.h> |
---|
32 | #include <sys/sockio.h> |
---|
33 | #include <net/if.h> |
---|
34 | #include <netinet/in.h> |
---|
35 | #include <netinet/if_ether.h> |
---|
36 | |
---|
37 | #ifdef malloc |
---|
38 | #undef malloc |
---|
39 | #endif |
---|
40 | #ifdef free |
---|
41 | #undef free |
---|
42 | #endif |
---|
43 | |
---|
44 | extern rtems_isr_entry set_vector( rtems_isr_entry, rtems_vector_number, int ); |
---|
45 | |
---|
46 | /* |
---|
47 | #define GRETH_DEBUG |
---|
48 | */ |
---|
49 | |
---|
50 | #ifdef CPU_U32_FIX |
---|
51 | extern void ipalign(struct mbuf *m); |
---|
52 | #endif |
---|
53 | |
---|
54 | /* |
---|
55 | * Number of OCs supported by this driver |
---|
56 | */ |
---|
57 | #define NOCDRIVER 1 |
---|
58 | |
---|
59 | /* |
---|
60 | * Receive buffer size -- Allow for a full ethernet packet including CRC |
---|
61 | */ |
---|
62 | #define RBUF_SIZE 1518 |
---|
63 | |
---|
64 | #define ET_MINLEN 64 /* minimum message length */ |
---|
65 | |
---|
66 | /* |
---|
67 | * RTEMS event used by interrupt handler to signal driver tasks. |
---|
68 | * This must not be any of the events used by the network task synchronization. |
---|
69 | */ |
---|
70 | #define INTERRUPT_EVENT RTEMS_EVENT_1 |
---|
71 | |
---|
72 | /* |
---|
73 | * RTEMS event used to start transmit daemon. |
---|
74 | * This must not be the same as INTERRUPT_EVENT. |
---|
75 | */ |
---|
76 | #define START_TRANSMIT_EVENT RTEMS_EVENT_2 |
---|
77 | |
---|
78 | /* event to send when tx buffers become available */ |
---|
79 | #define GRETH_TX_WAIT_EVENT RTEMS_EVENT_3 |
---|
80 | |
---|
81 | /* suspend when all TX descriptors exhausted */ |
---|
82 | /* |
---|
83 | #define GRETH_SUSPEND_NOTXBUF |
---|
84 | */ |
---|
85 | |
---|
86 | #if (MCLBYTES < RBUF_SIZE) |
---|
87 | # error "Driver must have MCLBYTES > RBUF_SIZE" |
---|
88 | #endif |
---|
89 | |
---|
90 | /* Ethernet buffer descriptor */ |
---|
91 | |
---|
92 | typedef struct _greth_rxtxdesc { |
---|
93 | volatile uint32_t ctrl; /* Length and status */ |
---|
94 | uint32_t *addr; /* Buffer pointer */ |
---|
95 | } greth_rxtxdesc; |
---|
96 | |
---|
97 | /* |
---|
98 | * Per-device data |
---|
99 | */ |
---|
100 | struct greth_softc |
---|
101 | { |
---|
102 | |
---|
103 | struct arpcom arpcom; |
---|
104 | |
---|
105 | greth_regs *regs; |
---|
106 | |
---|
107 | int acceptBroadcast; |
---|
108 | rtems_id rxDaemonTid; |
---|
109 | rtems_id txDaemonTid; |
---|
110 | |
---|
111 | unsigned int tx_ptr; |
---|
112 | unsigned int rx_ptr; |
---|
113 | unsigned int txbufs; |
---|
114 | unsigned int rxbufs; |
---|
115 | greth_rxtxdesc *txdesc; |
---|
116 | greth_rxtxdesc *rxdesc; |
---|
117 | struct mbuf **rxmbuf; |
---|
118 | rtems_vector_number vector; |
---|
119 | |
---|
120 | /* |
---|
121 | * Statistics |
---|
122 | */ |
---|
123 | unsigned long rxInterrupts; |
---|
124 | |
---|
125 | unsigned long rxPackets; |
---|
126 | unsigned long rxLengthError; |
---|
127 | unsigned long rxNonOctet; |
---|
128 | unsigned long rxBadCRC; |
---|
129 | unsigned long rxOverrun; |
---|
130 | |
---|
131 | unsigned long txInterrupts; |
---|
132 | |
---|
133 | unsigned long txDeferred; |
---|
134 | unsigned long txHeartbeat; |
---|
135 | unsigned long txLateCollision; |
---|
136 | unsigned long txRetryLimit; |
---|
137 | unsigned long txUnderrun; |
---|
138 | }; |
---|
139 | |
---|
140 | static struct greth_softc greth; |
---|
141 | |
---|
142 | static char *almalloc(int sz) |
---|
143 | { |
---|
144 | char *tmp; |
---|
145 | tmp = calloc(1,2*sz); |
---|
146 | tmp = (char *) (((int)tmp+sz) & ~(sz -1)); |
---|
147 | return(tmp); |
---|
148 | } |
---|
149 | |
---|
150 | /* GRETH interrupt handler */ |
---|
151 | |
---|
152 | static rtems_isr |
---|
153 | greth_interrupt_handler (rtems_vector_number v) |
---|
154 | { |
---|
155 | uint32_t status; |
---|
156 | /* read and clear interrupt cause */ |
---|
157 | |
---|
158 | status = greth.regs->status; |
---|
159 | greth.regs->status = status; |
---|
160 | |
---|
161 | /* Frame received? */ |
---|
162 | if (status & (GRETH_STATUS_RXERR | GRETH_STATUS_RXIRQ)) |
---|
163 | { |
---|
164 | greth.rxInterrupts++; |
---|
165 | rtems_event_send (greth.rxDaemonTid, INTERRUPT_EVENT); |
---|
166 | } |
---|
167 | #ifdef GRETH_SUSPEND_NOTXBUF |
---|
168 | if (status & (GRETH_STATUS_TXERR | GRETH_STATUS_TXIRQ)) |
---|
169 | { |
---|
170 | greth.txInterrupts++; |
---|
171 | rtems_event_send (greth.txDaemonTid, GRETH_TX_WAIT_EVENT); |
---|
172 | } |
---|
173 | #endif |
---|
174 | /* |
---|
175 | #ifdef __leon__ |
---|
176 | LEON_Clear_interrupt(v-0x10); |
---|
177 | #endif |
---|
178 | */ |
---|
179 | } |
---|
180 | |
---|
181 | static uint32_t read_mii(uint32_t addr) |
---|
182 | { |
---|
183 | while (greth.regs->mdio_ctrl & GRETH_MDIO_BUSY) {} |
---|
184 | greth.regs->mdio_ctrl = addr << 6 | GRETH_MDIO_READ; |
---|
185 | while (greth.regs->mdio_ctrl & GRETH_MDIO_BUSY) {} |
---|
186 | if (!(greth.regs->mdio_ctrl & GRETH_MDIO_LINKFAIL)) |
---|
187 | return((greth.regs->mdio_ctrl >> 16) & 0xFFFF); |
---|
188 | else { |
---|
189 | printf("greth: failed to read mii\n"); |
---|
190 | return (0); |
---|
191 | } |
---|
192 | } |
---|
193 | |
---|
194 | static void write_mii(uint32_t addr, uint32_t data) |
---|
195 | { |
---|
196 | while (greth.regs->mdio_ctrl & GRETH_MDIO_BUSY) {} |
---|
197 | greth.regs->mdio_ctrl = |
---|
198 | ((data & 0xFFFF) << 16) | (addr << 8) | GRETH_MDIO_WRITE; |
---|
199 | while (greth.regs->mdio_ctrl & GRETH_MDIO_BUSY) {} |
---|
200 | } |
---|
201 | /* |
---|
202 | * Initialize the ethernet hardware |
---|
203 | */ |
---|
204 | static void |
---|
205 | greth_initialize_hardware (struct greth_softc *sc) |
---|
206 | { |
---|
207 | struct mbuf *m; |
---|
208 | int i; |
---|
209 | int fd; |
---|
210 | |
---|
211 | greth_regs *regs; |
---|
212 | |
---|
213 | regs = sc->regs; |
---|
214 | |
---|
215 | /* Reset the controller. */ |
---|
216 | greth.rxInterrupts = 0; |
---|
217 | greth.rxPackets = 0; |
---|
218 | |
---|
219 | regs->ctrl = 0; |
---|
220 | regs->ctrl = GRETH_CTRL_RST; /* Reset ON */ |
---|
221 | regs->ctrl = 0; /* Reset OFF */ |
---|
222 | |
---|
223 | /* reset PHY and wait for complettion */ |
---|
224 | /* |
---|
225 | */ |
---|
226 | write_mii(0, 0x8000); |
---|
227 | while (read_mii(0) & 0x8000) {} |
---|
228 | fd = regs->mdio_ctrl >> 24; /*duplex mode*/ |
---|
229 | printf( |
---|
230 | "greth: driver attached, PHY config: 0x%04" PRIx32 "\n", read_mii(0)); |
---|
231 | |
---|
232 | /* Initialize rx/tx descriptor pointers */ |
---|
233 | sc->txdesc = (greth_rxtxdesc *) almalloc(1024); |
---|
234 | sc->rxdesc = (greth_rxtxdesc *) almalloc(1024); |
---|
235 | sc->tx_ptr = 0; |
---|
236 | sc->rx_ptr = 0; |
---|
237 | regs->txdesc = (int) sc->txdesc; |
---|
238 | regs->rxdesc = (int) sc->rxdesc; |
---|
239 | |
---|
240 | sc->rxmbuf = calloc(sc->rxbufs, sizeof(*sc->rxmbuf)); |
---|
241 | |
---|
242 | for (i = 0; i < sc->txbufs; i++) |
---|
243 | { |
---|
244 | sc->txdesc[i].addr = (uint32_t *) calloc(1, GRETH_MAXBUF_LEN); |
---|
245 | #ifdef GRETH_DEBUG |
---|
246 | printf("TXBUF: %08x\n", (int) sc->txdesc[i].addr); |
---|
247 | #endif |
---|
248 | } |
---|
249 | /*printf("RXbufs: %i\n", sc->rxbufs);*/ |
---|
250 | for (i = 0; i < sc->rxbufs; i++) |
---|
251 | { |
---|
252 | |
---|
253 | MGETHDR (m, M_WAIT, MT_DATA); |
---|
254 | MCLGET (m, M_WAIT); |
---|
255 | m->m_pkthdr.rcvif = &sc->arpcom.ac_if; |
---|
256 | sc->rxmbuf[i] = m; |
---|
257 | sc->rxdesc[i].addr = (uint32_t *) mtod(m, uint32_t *); |
---|
258 | sc->rxdesc[i].ctrl = GRETH_RXD_ENABLE | GRETH_RXD_IRQ; |
---|
259 | #ifdef GRETH_DEBUG |
---|
260 | printf("RXBUF: %08x\n", (int) sc->rxdesc[i].addr); |
---|
261 | #endif |
---|
262 | } |
---|
263 | sc->rxdesc[sc->rxbufs - 1].ctrl |= GRETH_RXD_WRAP; |
---|
264 | |
---|
265 | /* set ethernet address. */ |
---|
266 | regs->mac_addr_msb = |
---|
267 | sc->arpcom.ac_enaddr[0] << 8 | sc->arpcom.ac_enaddr[1]; |
---|
268 | regs->mac_addr_lsb = |
---|
269 | sc->arpcom.ac_enaddr[2] << 24 | sc->arpcom.ac_enaddr[3] << 16 | |
---|
270 | sc->arpcom.ac_enaddr[4] << 8 | sc->arpcom.ac_enaddr[5]; |
---|
271 | |
---|
272 | /* install interrupt vector */ |
---|
273 | set_vector(greth_interrupt_handler, sc->vector, 1); |
---|
274 | |
---|
275 | /* clear all pending interrupts */ |
---|
276 | |
---|
277 | regs->status = 0xffffffff; |
---|
278 | |
---|
279 | #ifdef GRETH_SUSPEND_NOTXBUF |
---|
280 | regs->ctrl |= GRETH_CTRL_TXIRQ; |
---|
281 | #endif |
---|
282 | |
---|
283 | regs->ctrl |= GRETH_CTRL_RXEN | (fd << 4) | GRETH_CTRL_RXIRQ; |
---|
284 | } |
---|
285 | |
---|
286 | static void |
---|
287 | greth_rxDaemon (void *arg) |
---|
288 | { |
---|
289 | struct ether_header *eh; |
---|
290 | struct greth_softc *dp = (struct greth_softc *) &greth; |
---|
291 | struct ifnet *ifp = &dp->arpcom.ac_if; |
---|
292 | struct mbuf *m; |
---|
293 | unsigned int len, len_status, bad; |
---|
294 | rtems_event_set events; |
---|
295 | |
---|
296 | /*printf("Started RxDaemon\n");*/ |
---|
297 | for (;;) |
---|
298 | { |
---|
299 | rtems_bsdnet_event_receive (INTERRUPT_EVENT, |
---|
300 | RTEMS_WAIT | RTEMS_EVENT_ANY, |
---|
301 | RTEMS_NO_TIMEOUT, &events); |
---|
302 | |
---|
303 | #ifdef GRETH_ETH_DEBUG |
---|
304 | printf ("r\n"); |
---|
305 | #endif |
---|
306 | /*printf("Packet received\n");*/ |
---|
307 | while (!((len_status = |
---|
308 | dp->rxdesc[dp->rx_ptr].ctrl) & GRETH_RXD_ENABLE)) |
---|
309 | { |
---|
310 | /*printf("Status: %x\n", dp->rxdesc[dp->rx_ptr].ctrl);*/ |
---|
311 | bad = 0; |
---|
312 | |
---|
313 | if (len_status & GRETH_RXD_TOOLONG) |
---|
314 | { |
---|
315 | dp->rxLengthError++; |
---|
316 | bad = 1; |
---|
317 | } |
---|
318 | if (len_status & GRETH_RXD_DRIBBLE) |
---|
319 | { |
---|
320 | dp->rxNonOctet++; |
---|
321 | bad = 1; |
---|
322 | } |
---|
323 | if (len_status & GRETH_RXD_CRCERR) |
---|
324 | { |
---|
325 | dp->rxBadCRC++; |
---|
326 | bad = 1; |
---|
327 | } |
---|
328 | if (len_status & GRETH_RXD_OVERRUN) |
---|
329 | { |
---|
330 | dp->rxOverrun++; |
---|
331 | bad = 1; |
---|
332 | } |
---|
333 | if (!bad) |
---|
334 | { |
---|
335 | /*printf("Received Ok packet\n");*/ |
---|
336 | /* pass on the packet in the receive buffer */ |
---|
337 | len = len_status & 0x7FF; |
---|
338 | m = dp->rxmbuf[dp->rx_ptr]; |
---|
339 | m->m_len = m->m_pkthdr.len = |
---|
340 | len - sizeof (struct ether_header); |
---|
341 | /*printf("Packet of length: %i\n", len);*/ |
---|
342 | eh = mtod (m, struct ether_header *); |
---|
343 | m->m_data += sizeof (struct ether_header); |
---|
344 | /*printf("Mbuf handling done\n");*/ |
---|
345 | #ifdef CPU_U32_FIX |
---|
346 | /*printf("Ip aligning\n");*/ |
---|
347 | ipalign(m); /* Align packet on 32-bit boundary */ |
---|
348 | #endif |
---|
349 | /*printf("Calling stack\n");*/ |
---|
350 | /*printf("Ifp: %x, Eh: %x, M: %x\n", (int)ifp, (int)eh, (int)m);*/ |
---|
351 | ether_input (ifp, eh, m); |
---|
352 | /*printf("Returned from stack\n");*/ |
---|
353 | /* get a new mbuf */ |
---|
354 | /*printf("Getting new mbuf\n");*/ |
---|
355 | MGETHDR (m, M_WAIT, MT_DATA); |
---|
356 | MCLGET (m, M_WAIT); |
---|
357 | /*printf("Got new mbuf\n");*/ |
---|
358 | dp->rxmbuf[dp->rx_ptr] = m; |
---|
359 | m->m_pkthdr.rcvif = ifp; |
---|
360 | dp->rxdesc[dp->rx_ptr].addr = |
---|
361 | (uint32_t *) mtod (m, uint32_t *); |
---|
362 | dp->rxPackets++; |
---|
363 | } |
---|
364 | /*printf("Reenabling desc\n");*/ |
---|
365 | dp->rxdesc[dp->rx_ptr].ctrl = GRETH_RXD_ENABLE | GRETH_RXD_IRQ; |
---|
366 | if (dp->rx_ptr == dp->rxbufs - 1) { |
---|
367 | dp->rxdesc[dp->rx_ptr].ctrl |= GRETH_RXD_WRAP; |
---|
368 | } |
---|
369 | dp->regs->ctrl |= GRETH_CTRL_RXEN; |
---|
370 | /*printf("rxptr: %i\n", dp->rx_ptr);*/ |
---|
371 | dp->rx_ptr = (dp->rx_ptr + 1) % dp->rxbufs; |
---|
372 | /*printf("RxDesc reenabled\n");*/ |
---|
373 | } |
---|
374 | } |
---|
375 | |
---|
376 | } |
---|
377 | |
---|
378 | static int inside = 0; |
---|
379 | static void |
---|
380 | sendpacket (struct ifnet *ifp, struct mbuf *m) |
---|
381 | { |
---|
382 | struct greth_softc *dp = ifp->if_softc; |
---|
383 | unsigned char *temp; |
---|
384 | struct mbuf *n; |
---|
385 | unsigned int len; |
---|
386 | |
---|
387 | /*printf("Send packet entered\n");*/ |
---|
388 | if (inside) printf ("error: sendpacket re-entered!!\n"); |
---|
389 | inside = 1; |
---|
390 | /* |
---|
391 | * Waiting for Transmitter ready |
---|
392 | */ |
---|
393 | n = m; |
---|
394 | |
---|
395 | while (dp->txdesc[dp->tx_ptr].ctrl & GRETH_TXD_ENABLE) |
---|
396 | { |
---|
397 | #ifdef GRETH_SUSPEND_NOTXBUF |
---|
398 | dp->txdesc[dp->tx_ptr].ctrl |= GRETH_TXD_IRQ; |
---|
399 | rtems_event_set events; |
---|
400 | rtems_bsdnet_event_receive (GRETH_TX_WAIT_EVENT, |
---|
401 | RTEMS_WAIT | RTEMS_EVENT_ANY, |
---|
402 | TOD_MILLISECONDS_TO_TICKS(500), &events); |
---|
403 | #endif |
---|
404 | } |
---|
405 | |
---|
406 | len = 0; |
---|
407 | temp = (unsigned char *) dp->txdesc[dp->tx_ptr].addr; |
---|
408 | #ifdef GRETH_DEBUG |
---|
409 | printf("TXD: 0x%08x\n", (int) m->m_data); |
---|
410 | #endif |
---|
411 | for (;;) |
---|
412 | { |
---|
413 | #ifdef GRETH_DEBUG |
---|
414 | int i; |
---|
415 | printf("MBUF: 0x%08x : ", (int) m->m_data); |
---|
416 | for (i=0;i<m->m_len;i++) |
---|
417 | printf("%x%x", (m->m_data[i] >> 4) & 0x0ff, m->m_data[i] & 0x0ff); |
---|
418 | printf("\n"); |
---|
419 | #endif |
---|
420 | len += m->m_len; |
---|
421 | if (len <= RBUF_SIZE) |
---|
422 | memcpy ((void *) temp, (char *) m->m_data, m->m_len); |
---|
423 | temp += m->m_len; |
---|
424 | if ((m = m->m_next) == NULL) |
---|
425 | break; |
---|
426 | } |
---|
427 | |
---|
428 | m_freem (n); |
---|
429 | |
---|
430 | /* don't send long packets */ |
---|
431 | |
---|
432 | if (len <= GRETH_MAXBUF_LEN) { |
---|
433 | if (dp->tx_ptr < dp->txbufs-1) { |
---|
434 | dp->txdesc[dp->tx_ptr].ctrl = GRETH_TXD_ENABLE | len; |
---|
435 | } else { |
---|
436 | dp->txdesc[dp->tx_ptr].ctrl = |
---|
437 | GRETH_TXD_WRAP | GRETH_TXD_ENABLE | len; |
---|
438 | } |
---|
439 | dp->regs->ctrl = dp->regs->ctrl | GRETH_CTRL_TXEN; |
---|
440 | dp->tx_ptr = (dp->tx_ptr + 1) % dp->txbufs; |
---|
441 | } |
---|
442 | inside = 0; |
---|
443 | } |
---|
444 | |
---|
445 | /* |
---|
446 | * Driver transmit daemon |
---|
447 | */ |
---|
448 | void |
---|
449 | greth_txDaemon (void *arg) |
---|
450 | { |
---|
451 | struct greth_softc *sc = (struct greth_softc *) arg; |
---|
452 | struct ifnet *ifp = &sc->arpcom.ac_if; |
---|
453 | struct mbuf *m; |
---|
454 | rtems_event_set events; |
---|
455 | |
---|
456 | for (;;) |
---|
457 | { |
---|
458 | /* |
---|
459 | * Wait for packet |
---|
460 | */ |
---|
461 | |
---|
462 | rtems_bsdnet_event_receive (START_TRANSMIT_EVENT, |
---|
463 | RTEMS_EVENT_ANY | RTEMS_WAIT, |
---|
464 | RTEMS_NO_TIMEOUT, &events); |
---|
465 | #ifdef GRETH_DEBUG |
---|
466 | printf ("t\n"); |
---|
467 | #endif |
---|
468 | |
---|
469 | /* |
---|
470 | * Send packets till queue is empty |
---|
471 | */ |
---|
472 | for (;;) |
---|
473 | { |
---|
474 | /* |
---|
475 | * Get the next mbuf chain to transmit. |
---|
476 | */ |
---|
477 | IF_DEQUEUE (&ifp->if_snd, m); |
---|
478 | if (!m) |
---|
479 | break; |
---|
480 | |
---|
481 | sendpacket (ifp, m); |
---|
482 | } |
---|
483 | ifp->if_flags &= ~IFF_OACTIVE; |
---|
484 | } |
---|
485 | } |
---|
486 | |
---|
487 | |
---|
488 | static void |
---|
489 | greth_start (struct ifnet *ifp) |
---|
490 | { |
---|
491 | struct greth_softc *sc = ifp->if_softc; |
---|
492 | |
---|
493 | ifp->if_flags |= IFF_OACTIVE; |
---|
494 | rtems_event_send (sc->txDaemonTid, START_TRANSMIT_EVENT); |
---|
495 | |
---|
496 | } |
---|
497 | |
---|
498 | /* |
---|
499 | * Initialize and start the device |
---|
500 | */ |
---|
501 | static void |
---|
502 | greth_init (void *arg) |
---|
503 | { |
---|
504 | struct greth_softc *sc = arg; |
---|
505 | struct ifnet *ifp = &sc->arpcom.ac_if; |
---|
506 | |
---|
507 | if (sc->txDaemonTid == 0) |
---|
508 | { |
---|
509 | |
---|
510 | /* |
---|
511 | * Set up GRETH hardware |
---|
512 | */ |
---|
513 | greth_initialize_hardware (sc); |
---|
514 | |
---|
515 | /* |
---|
516 | * Start driver tasks |
---|
517 | */ |
---|
518 | sc->rxDaemonTid = rtems_bsdnet_newproc ("DCrx", 4096, |
---|
519 | greth_rxDaemon, sc); |
---|
520 | sc->txDaemonTid = rtems_bsdnet_newproc ("DCtx", 4096, |
---|
521 | greth_txDaemon, sc); |
---|
522 | } |
---|
523 | |
---|
524 | /* |
---|
525 | * Tell the world that we're running. |
---|
526 | */ |
---|
527 | ifp->if_flags |= IFF_RUNNING; |
---|
528 | |
---|
529 | } |
---|
530 | |
---|
531 | /* |
---|
532 | * Stop the device |
---|
533 | */ |
---|
534 | static void |
---|
535 | greth_stop (struct greth_softc *sc) |
---|
536 | { |
---|
537 | struct ifnet *ifp = &sc->arpcom.ac_if; |
---|
538 | |
---|
539 | ifp->if_flags &= ~IFF_RUNNING; |
---|
540 | |
---|
541 | sc->regs->ctrl = 0; /* RX/TX OFF */ |
---|
542 | sc->regs->ctrl = GRETH_CTRL_RST; /* Reset ON */ |
---|
543 | sc->regs->ctrl = 0; /* Reset OFF */ |
---|
544 | } |
---|
545 | |
---|
546 | |
---|
547 | /* |
---|
548 | * Show interface statistics |
---|
549 | */ |
---|
550 | static void |
---|
551 | greth_stats (struct greth_softc *sc) |
---|
552 | { |
---|
553 | printf (" Rx Interrupts:%-8lu", sc->rxInterrupts); |
---|
554 | printf (" Rx Packets:%-8lu", sc->rxPackets); |
---|
555 | printf (" Length:%-8lu", sc->rxLengthError); |
---|
556 | printf (" Non-octet:%-8lu\n", sc->rxNonOctet); |
---|
557 | printf (" Bad CRC:%-8lu", sc->rxBadCRC); |
---|
558 | printf (" Overrun:%-8lu", sc->rxOverrun); |
---|
559 | printf (" Tx Interrupts:%-8lu", sc->txInterrupts); |
---|
560 | } |
---|
561 | |
---|
562 | /* |
---|
563 | * Driver ioctl handler |
---|
564 | */ |
---|
565 | static int |
---|
566 | greth_ioctl (struct ifnet *ifp, ioctl_command_t command, caddr_t data) |
---|
567 | { |
---|
568 | struct greth_softc *sc = ifp->if_softc; |
---|
569 | int error = 0; |
---|
570 | |
---|
571 | switch (command) |
---|
572 | { |
---|
573 | case SIOCGIFADDR: |
---|
574 | case SIOCSIFADDR: |
---|
575 | ether_ioctl (ifp, command, data); |
---|
576 | break; |
---|
577 | |
---|
578 | case SIOCSIFFLAGS: |
---|
579 | switch (ifp->if_flags & (IFF_UP | IFF_RUNNING)) |
---|
580 | { |
---|
581 | case IFF_RUNNING: |
---|
582 | greth_stop (sc); |
---|
583 | break; |
---|
584 | |
---|
585 | case IFF_UP: |
---|
586 | greth_init (sc); |
---|
587 | break; |
---|
588 | |
---|
589 | case IFF_UP | IFF_RUNNING: |
---|
590 | greth_stop (sc); |
---|
591 | greth_init (sc); |
---|
592 | break; |
---|
593 | default: |
---|
594 | break; |
---|
595 | } |
---|
596 | break; |
---|
597 | |
---|
598 | case SIO_RTEMS_SHOW_STATS: |
---|
599 | greth_stats (sc); |
---|
600 | break; |
---|
601 | |
---|
602 | /* |
---|
603 | * FIXME: All sorts of multicast commands need to be added here! |
---|
604 | */ |
---|
605 | default: |
---|
606 | error = EINVAL; |
---|
607 | break; |
---|
608 | } |
---|
609 | |
---|
610 | return error; |
---|
611 | } |
---|
612 | |
---|
613 | /* |
---|
614 | * Attach an GRETH driver to the system |
---|
615 | */ |
---|
616 | int |
---|
617 | rtems_greth_driver_attach (struct rtems_bsdnet_ifconfig *config, |
---|
618 | greth_configuration_t *chip) |
---|
619 | { |
---|
620 | struct greth_softc *sc; |
---|
621 | struct ifnet *ifp; |
---|
622 | int mtu; |
---|
623 | int unitNumber; |
---|
624 | char *unitName; |
---|
625 | |
---|
626 | /* parse driver name */ |
---|
627 | if ((unitNumber = rtems_bsdnet_parse_driver_name (config, &unitName)) < 0) |
---|
628 | return 0; |
---|
629 | |
---|
630 | sc = &greth; |
---|
631 | ifp = &sc->arpcom.ac_if; |
---|
632 | memset (sc, 0, sizeof (*sc)); |
---|
633 | |
---|
634 | if (config->hardware_address) |
---|
635 | { |
---|
636 | memcpy (sc->arpcom.ac_enaddr, config->hardware_address, |
---|
637 | ETHER_ADDR_LEN); |
---|
638 | } |
---|
639 | else |
---|
640 | { |
---|
641 | memset (sc->arpcom.ac_enaddr, 0x08, ETHER_ADDR_LEN); |
---|
642 | } |
---|
643 | |
---|
644 | if (config->mtu) |
---|
645 | mtu = config->mtu; |
---|
646 | else |
---|
647 | mtu = ETHERMTU; |
---|
648 | |
---|
649 | sc->acceptBroadcast = !config->ignore_broadcast; |
---|
650 | sc->regs = (void *) chip->base_address; |
---|
651 | sc->vector = chip->vector; |
---|
652 | sc->txbufs = chip->txd_count; |
---|
653 | sc->rxbufs = chip->rxd_count; |
---|
654 | |
---|
655 | /* |
---|
656 | * Set up network interface values |
---|
657 | */ |
---|
658 | ifp->if_softc = sc; |
---|
659 | ifp->if_unit = unitNumber; |
---|
660 | ifp->if_name = unitName; |
---|
661 | ifp->if_mtu = mtu; |
---|
662 | ifp->if_init = greth_init; |
---|
663 | ifp->if_ioctl = greth_ioctl; |
---|
664 | ifp->if_start = greth_start; |
---|
665 | ifp->if_output = ether_output; |
---|
666 | ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX; |
---|
667 | if (ifp->if_snd.ifq_maxlen == 0) |
---|
668 | ifp->if_snd.ifq_maxlen = ifqmaxlen; |
---|
669 | |
---|
670 | /* |
---|
671 | * Attach the interface |
---|
672 | */ |
---|
673 | if_attach (ifp); |
---|
674 | ether_ifattach (ifp); |
---|
675 | |
---|
676 | #ifdef GRETH_DEBUG |
---|
677 | printf ("GRETH : driver has been attached\n"); |
---|
678 | #endif |
---|
679 | return 1; |
---|
680 | }; |
---|
681 | |
---|