1 /*-
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * Copyright (c) 2004
5 * Bill Paul <[email protected]>. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by Bill Paul.
18 * 4. Neither the name of the author nor the names of any co-contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
32 * THE POSSIBILITY OF SUCH DAMAGE.
33 */
34
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
37
38 /*
39 * VIA Networking Technologies VT612x PCI gigabit ethernet NIC driver.
40 *
41 * Written by Bill Paul <[email protected]>
42 * Senior Networking Software Engineer
43 * Wind River Systems
44 */
45
46 /*
47 * The VIA Networking VT6122 is a 32bit, 33/66Mhz PCI device that
48 * combines a tri-speed ethernet MAC and PHY, with the following
49 * features:
50 *
51 * o Jumbo frame support up to 16K
52 * o Transmit and receive flow control
53 * o IPv4 checksum offload
54 * o VLAN tag insertion and stripping
55 * o TCP large send
56 * o 64-bit multicast hash table filter
57 * o 64 entry CAM filter
58 * o 16K RX FIFO and 48K TX FIFO memory
59 * o Interrupt moderation
60 *
61 * The VT6122 supports up to four transmit DMA queues. The descriptors
62 * in the transmit ring can address up to 7 data fragments; frames which
63 * span more than 7 data buffers must be coalesced, but in general the
64 * BSD TCP/IP stack rarely generates frames more than 2 or 3 fragments
65 * long. The receive descriptors address only a single buffer.
66 *
67 * There are two peculiar design issues with the VT6122. One is that
68 * receive data buffers must be aligned on a 32-bit boundary. This is
69 * not a problem where the VT6122 is used as a LOM device in x86-based
70 * systems, but on architectures that generate unaligned access traps, we
71 * have to do some copying.
72 *
73 * The other issue has to do with the way 64-bit addresses are handled.
74 * The DMA descriptors only allow you to specify 48 bits of addressing
75 * information. The remaining 16 bits are specified using one of the
76 * I/O registers. If you only have a 32-bit system, then this isn't
77 * an issue, but if you have a 64-bit system and more than 4GB of
78 * memory, you must have to make sure your network data buffers reside
79 * in the same 48-bit 'segment.'
80 *
81 * Special thanks to Ryan Fu at VIA Networking for providing documentation
82 * and sample NICs for testing.
83 */
84
85 #ifdef HAVE_KERNEL_OPTION_HEADERS
86 #include "opt_device_polling.h"
87 #endif
88
89 #include <sys/param.h>
90 #include <sys/endian.h>
91 #include <sys/systm.h>
92 #include <sys/sockio.h>
93 #include <sys/mbuf.h>
94 #include <sys/malloc.h>
95 #include <sys/module.h>
96 #include <sys/kernel.h>
97 #include <sys/socket.h>
98 #include <sys/sysctl.h>
99
100 #include <net/if.h>
101 #include <net/if_arp.h>
102 #include <net/ethernet.h>
103 #include <net/if_dl.h>
104 #include <net/if_var.h>
105 #include <net/if_media.h>
106 #include <net/if_types.h>
107 #include <net/if_vlan_var.h>
108
109 #include <net/bpf.h>
110
111 #include <machine/bus.h>
112 #include <machine/resource.h>
113 #include <sys/bus.h>
114 #include <sys/rman.h>
115
116 #include <dev/mii/mii.h>
117 #include <dev/mii/miivar.h>
118
119 #include <dev/pci/pcireg.h>
120 #include <dev/pci/pcivar.h>
121
122 MODULE_DEPEND(vge, pci, 1, 1, 1);
123 MODULE_DEPEND(vge, ether, 1, 1, 1);
124 MODULE_DEPEND(vge, miibus, 1, 1, 1);
125
126 /* "device miibus" required. See GENERIC if you get errors here. */
127 #include "miibus_if.h"
128
129 #include <dev/vge/if_vgereg.h>
130 #include <dev/vge/if_vgevar.h>
131
132 #define VGE_CSUM_FEATURES (CSUM_IP | CSUM_TCP | CSUM_UDP)
133
134 /* Tunables */
135 static int msi_disable = 0;
136 TUNABLE_INT("hw.vge.msi_disable", &msi_disable);
137
138 /*
139 * The SQE error counter of MIB seems to report bogus value.
140 * Vendor's workaround does not seem to work on PCIe based
141 * controllers. Disable it until we find better workaround.
142 */
143 #undef VGE_ENABLE_SQEERR
144
145 /*
146 * Various supported device vendors/types and their names.
147 */
148 static struct vge_type vge_devs[] = {
149 { VIA_VENDORID, VIA_DEVICEID_61XX,
150 "VIA Networking Velocity Gigabit Ethernet" },
151 { 0, 0, NULL }
152 };
153
154 static int vge_attach(device_t);
155 static int vge_detach(device_t);
156 static int vge_probe(device_t);
157 static int vge_resume(device_t);
158 static int vge_shutdown(device_t);
159 static int vge_suspend(device_t);
160
161 static void vge_cam_clear(struct vge_softc *);
162 static int vge_cam_set(struct vge_softc *, uint8_t *);
163 static void vge_clrwol(struct vge_softc *);
164 static void vge_discard_rxbuf(struct vge_softc *, int);
165 static int vge_dma_alloc(struct vge_softc *);
166 static void vge_dma_free(struct vge_softc *);
167 static void vge_dmamap_cb(void *, bus_dma_segment_t *, int, int);
168 #ifdef VGE_EEPROM
169 static void vge_eeprom_getword(struct vge_softc *, int, uint16_t *);
170 #endif
171 static int vge_encap(struct vge_softc *, struct mbuf **);
172 #ifndef __NO_STRICT_ALIGNMENT
173 static __inline void
174 vge_fixup_rx(struct mbuf *);
175 #endif
176 static void vge_freebufs(struct vge_softc *);
177 static void vge_ifmedia_sts(struct ifnet *, struct ifmediareq *);
178 static int vge_ifmedia_upd(struct ifnet *);
179 static int vge_ifmedia_upd_locked(struct vge_softc *);
180 static void vge_init(void *);
181 static void vge_init_locked(struct vge_softc *);
182 static void vge_intr(void *);
183 static void vge_intr_holdoff(struct vge_softc *);
184 static int vge_ioctl(struct ifnet *, u_long, caddr_t);
185 static void vge_link_statchg(void *);
186 static int vge_miibus_readreg(device_t, int, int);
187 static int vge_miibus_writereg(device_t, int, int, int);
188 static void vge_miipoll_start(struct vge_softc *);
189 static void vge_miipoll_stop(struct vge_softc *);
190 static int vge_newbuf(struct vge_softc *, int);
191 static void vge_read_eeprom(struct vge_softc *, caddr_t, int, int, int);
192 static void vge_reset(struct vge_softc *);
193 static int vge_rx_list_init(struct vge_softc *);
194 static int vge_rxeof(struct vge_softc *, int);
195 static void vge_rxfilter(struct vge_softc *);
196 static void vge_setmedia(struct vge_softc *);
197 static void vge_setvlan(struct vge_softc *);
198 static void vge_setwol(struct vge_softc *);
199 static void vge_start(struct ifnet *);
200 static void vge_start_locked(struct ifnet *);
201 static void vge_stats_clear(struct vge_softc *);
202 static void vge_stats_update(struct vge_softc *);
203 static void vge_stop(struct vge_softc *);
204 static void vge_sysctl_node(struct vge_softc *);
205 static int vge_tx_list_init(struct vge_softc *);
206 static void vge_txeof(struct vge_softc *);
207 static void vge_watchdog(void *);
208
209 static device_method_t vge_methods[] = {
210 /* Device interface */
211 DEVMETHOD(device_probe, vge_probe),
212 DEVMETHOD(device_attach, vge_attach),
213 DEVMETHOD(device_detach, vge_detach),
214 DEVMETHOD(device_suspend, vge_suspend),
215 DEVMETHOD(device_resume, vge_resume),
216 DEVMETHOD(device_shutdown, vge_shutdown),
217
218 /* MII interface */
219 DEVMETHOD(miibus_readreg, vge_miibus_readreg),
220 DEVMETHOD(miibus_writereg, vge_miibus_writereg),
221
222 DEVMETHOD_END
223 };
224
225 static driver_t vge_driver = {
226 "vge",
227 vge_methods,
228 sizeof(struct vge_softc)
229 };
230
231 static devclass_t vge_devclass;
232
233 DRIVER_MODULE(vge, pci, vge_driver, vge_devclass, 0, 0);
234 DRIVER_MODULE(miibus, vge, miibus_driver, miibus_devclass, 0, 0);
235
236 #ifdef VGE_EEPROM
237 /*
238 * Read a word of data stored in the EEPROM at address 'addr.'
239 */
240 static void
vge_eeprom_getword(struct vge_softc * sc,int addr,uint16_t * dest)241 vge_eeprom_getword(struct vge_softc *sc, int addr, uint16_t *dest)
242 {
243 int i;
244 uint16_t word = 0;
245
246 /*
247 * Enter EEPROM embedded programming mode. In order to
248 * access the EEPROM at all, we first have to set the
249 * EELOAD bit in the CHIPCFG2 register.
250 */
251 CSR_SETBIT_1(sc, VGE_CHIPCFG2, VGE_CHIPCFG2_EELOAD);
252 CSR_SETBIT_1(sc, VGE_EECSR, VGE_EECSR_EMBP/*|VGE_EECSR_ECS*/);
253
254 /* Select the address of the word we want to read */
255 CSR_WRITE_1(sc, VGE_EEADDR, addr);
256
257 /* Issue read command */
258 CSR_SETBIT_1(sc, VGE_EECMD, VGE_EECMD_ERD);
259
260 /* Wait for the done bit to be set. */
261 for (i = 0; i < VGE_TIMEOUT; i++) {
262 if (CSR_READ_1(sc, VGE_EECMD) & VGE_EECMD_EDONE)
263 break;
264 }
265
266 if (i == VGE_TIMEOUT) {
267 device_printf(sc->vge_dev, "EEPROM read timed out\n");
268 *dest = 0;
269 return;
270 }
271
272 /* Read the result */
273 word = CSR_READ_2(sc, VGE_EERDDAT);
274
275 /* Turn off EEPROM access mode. */
276 CSR_CLRBIT_1(sc, VGE_EECSR, VGE_EECSR_EMBP/*|VGE_EECSR_ECS*/);
277 CSR_CLRBIT_1(sc, VGE_CHIPCFG2, VGE_CHIPCFG2_EELOAD);
278
279 *dest = word;
280 }
281 #endif
282
283 /*
284 * Read a sequence of words from the EEPROM.
285 */
286 static void
vge_read_eeprom(struct vge_softc * sc,caddr_t dest,int off,int cnt,int swap)287 vge_read_eeprom(struct vge_softc *sc, caddr_t dest, int off, int cnt, int swap)
288 {
289 int i;
290 #ifdef VGE_EEPROM
291 uint16_t word = 0, *ptr;
292
293 for (i = 0; i < cnt; i++) {
294 vge_eeprom_getword(sc, off + i, &word);
295 ptr = (uint16_t *)(dest + (i * 2));
296 if (swap)
297 *ptr = ntohs(word);
298 else
299 *ptr = word;
300 }
301 #else
302 for (i = 0; i < ETHER_ADDR_LEN; i++)
303 dest[i] = CSR_READ_1(sc, VGE_PAR0 + i);
304 #endif
305 }
306
307 static void
vge_miipoll_stop(struct vge_softc * sc)308 vge_miipoll_stop(struct vge_softc *sc)
309 {
310 int i;
311
312 CSR_WRITE_1(sc, VGE_MIICMD, 0);
313
314 for (i = 0; i < VGE_TIMEOUT; i++) {
315 DELAY(1);
316 if (CSR_READ_1(sc, VGE_MIISTS) & VGE_MIISTS_IIDL)
317 break;
318 }
319
320 if (i == VGE_TIMEOUT)
321 device_printf(sc->vge_dev, "failed to idle MII autopoll\n");
322 }
323
324 static void
vge_miipoll_start(struct vge_softc * sc)325 vge_miipoll_start(struct vge_softc *sc)
326 {
327 int i;
328
329 /* First, make sure we're idle. */
330
331 CSR_WRITE_1(sc, VGE_MIICMD, 0);
332 CSR_WRITE_1(sc, VGE_MIIADDR, VGE_MIIADDR_SWMPL);
333
334 for (i = 0; i < VGE_TIMEOUT; i++) {
335 DELAY(1);
336 if (CSR_READ_1(sc, VGE_MIISTS) & VGE_MIISTS_IIDL)
337 break;
338 }
339
340 if (i == VGE_TIMEOUT) {
341 device_printf(sc->vge_dev, "failed to idle MII autopoll\n");
342 return;
343 }
344
345 /* Now enable auto poll mode. */
346
347 CSR_WRITE_1(sc, VGE_MIICMD, VGE_MIICMD_MAUTO);
348
349 /* And make sure it started. */
350
351 for (i = 0; i < VGE_TIMEOUT; i++) {
352 DELAY(1);
353 if ((CSR_READ_1(sc, VGE_MIISTS) & VGE_MIISTS_IIDL) == 0)
354 break;
355 }
356
357 if (i == VGE_TIMEOUT)
358 device_printf(sc->vge_dev, "failed to start MII autopoll\n");
359 }
360
361 static int
vge_miibus_readreg(device_t dev,int phy,int reg)362 vge_miibus_readreg(device_t dev, int phy, int reg)
363 {
364 struct vge_softc *sc;
365 int i;
366 uint16_t rval = 0;
367
368 sc = device_get_softc(dev);
369
370 vge_miipoll_stop(sc);
371
372 /* Specify the register we want to read. */
373 CSR_WRITE_1(sc, VGE_MIIADDR, reg);
374
375 /* Issue read command. */
376 CSR_SETBIT_1(sc, VGE_MIICMD, VGE_MIICMD_RCMD);
377
378 /* Wait for the read command bit to self-clear. */
379 for (i = 0; i < VGE_TIMEOUT; i++) {
380 DELAY(1);
381 if ((CSR_READ_1(sc, VGE_MIICMD) & VGE_MIICMD_RCMD) == 0)
382 break;
383 }
384
385 if (i == VGE_TIMEOUT)
386 device_printf(sc->vge_dev, "MII read timed out\n");
387 else
388 rval = CSR_READ_2(sc, VGE_MIIDATA);
389
390 vge_miipoll_start(sc);
391
392 return (rval);
393 }
394
395 static int
vge_miibus_writereg(device_t dev,int phy,int reg,int data)396 vge_miibus_writereg(device_t dev, int phy, int reg, int data)
397 {
398 struct vge_softc *sc;
399 int i, rval = 0;
400
401 sc = device_get_softc(dev);
402
403 vge_miipoll_stop(sc);
404
405 /* Specify the register we want to write. */
406 CSR_WRITE_1(sc, VGE_MIIADDR, reg);
407
408 /* Specify the data we want to write. */
409 CSR_WRITE_2(sc, VGE_MIIDATA, data);
410
411 /* Issue write command. */
412 CSR_SETBIT_1(sc, VGE_MIICMD, VGE_MIICMD_WCMD);
413
414 /* Wait for the write command bit to self-clear. */
415 for (i = 0; i < VGE_TIMEOUT; i++) {
416 DELAY(1);
417 if ((CSR_READ_1(sc, VGE_MIICMD) & VGE_MIICMD_WCMD) == 0)
418 break;
419 }
420
421 if (i == VGE_TIMEOUT) {
422 device_printf(sc->vge_dev, "MII write timed out\n");
423 rval = EIO;
424 }
425
426 vge_miipoll_start(sc);
427
428 return (rval);
429 }
430
431 static void
vge_cam_clear(struct vge_softc * sc)432 vge_cam_clear(struct vge_softc *sc)
433 {
434 int i;
435
436 /*
437 * Turn off all the mask bits. This tells the chip
438 * that none of the entries in the CAM filter are valid.
439 * desired entries will be enabled as we fill the filter in.
440 */
441
442 CSR_CLRBIT_1(sc, VGE_CAMCTL, VGE_CAMCTL_PAGESEL);
443 CSR_SETBIT_1(sc, VGE_CAMCTL, VGE_PAGESEL_CAMMASK);
444 CSR_WRITE_1(sc, VGE_CAMADDR, VGE_CAMADDR_ENABLE);
445 for (i = 0; i < 8; i++)
446 CSR_WRITE_1(sc, VGE_CAM0 + i, 0);
447
448 /* Clear the VLAN filter too. */
449
450 CSR_WRITE_1(sc, VGE_CAMADDR, VGE_CAMADDR_ENABLE|VGE_CAMADDR_AVSEL|0);
451 for (i = 0; i < 8; i++)
452 CSR_WRITE_1(sc, VGE_CAM0 + i, 0);
453
454 CSR_WRITE_1(sc, VGE_CAMADDR, 0);
455 CSR_CLRBIT_1(sc, VGE_CAMCTL, VGE_CAMCTL_PAGESEL);
456 CSR_SETBIT_1(sc, VGE_CAMCTL, VGE_PAGESEL_MAR);
457
458 sc->vge_camidx = 0;
459 }
460
461 static int
vge_cam_set(struct vge_softc * sc,uint8_t * addr)462 vge_cam_set(struct vge_softc *sc, uint8_t *addr)
463 {
464 int i, error = 0;
465
466 if (sc->vge_camidx == VGE_CAM_MAXADDRS)
467 return (ENOSPC);
468
469 /* Select the CAM data page. */
470 CSR_CLRBIT_1(sc, VGE_CAMCTL, VGE_CAMCTL_PAGESEL);
471 CSR_SETBIT_1(sc, VGE_CAMCTL, VGE_PAGESEL_CAMDATA);
472
473 /* Set the filter entry we want to update and enable writing. */
474 CSR_WRITE_1(sc, VGE_CAMADDR, VGE_CAMADDR_ENABLE|sc->vge_camidx);
475
476 /* Write the address to the CAM registers */
477 for (i = 0; i < ETHER_ADDR_LEN; i++)
478 CSR_WRITE_1(sc, VGE_CAM0 + i, addr[i]);
479
480 /* Issue a write command. */
481 CSR_SETBIT_1(sc, VGE_CAMCTL, VGE_CAMCTL_WRITE);
482
483 /* Wake for it to clear. */
484 for (i = 0; i < VGE_TIMEOUT; i++) {
485 DELAY(1);
486 if ((CSR_READ_1(sc, VGE_CAMCTL) & VGE_CAMCTL_WRITE) == 0)
487 break;
488 }
489
490 if (i == VGE_TIMEOUT) {
491 device_printf(sc->vge_dev, "setting CAM filter failed\n");
492 error = EIO;
493 goto fail;
494 }
495
496 /* Select the CAM mask page. */
497 CSR_CLRBIT_1(sc, VGE_CAMCTL, VGE_CAMCTL_PAGESEL);
498 CSR_SETBIT_1(sc, VGE_CAMCTL, VGE_PAGESEL_CAMMASK);
499
500 /* Set the mask bit that enables this filter. */
501 CSR_SETBIT_1(sc, VGE_CAM0 + (sc->vge_camidx/8),
502 1<<(sc->vge_camidx & 7));
503
504 sc->vge_camidx++;
505
506 fail:
507 /* Turn off access to CAM. */
508 CSR_WRITE_1(sc, VGE_CAMADDR, 0);
509 CSR_CLRBIT_1(sc, VGE_CAMCTL, VGE_CAMCTL_PAGESEL);
510 CSR_SETBIT_1(sc, VGE_CAMCTL, VGE_PAGESEL_MAR);
511
512 return (error);
513 }
514
515 static void
vge_setvlan(struct vge_softc * sc)516 vge_setvlan(struct vge_softc *sc)
517 {
518 struct ifnet *ifp;
519 uint8_t cfg;
520
521 VGE_LOCK_ASSERT(sc);
522
523 ifp = sc->vge_ifp;
524 cfg = CSR_READ_1(sc, VGE_RXCFG);
525 if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) != 0)
526 cfg |= VGE_VTAG_OPT2;
527 else
528 cfg &= ~VGE_VTAG_OPT2;
529 CSR_WRITE_1(sc, VGE_RXCFG, cfg);
530 }
531
532 /*
533 * Program the multicast filter. We use the 64-entry CAM filter
534 * for perfect filtering. If there's more than 64 multicast addresses,
535 * we use the hash filter instead.
536 */
537 static void
vge_rxfilter(struct vge_softc * sc)538 vge_rxfilter(struct vge_softc *sc)
539 {
540 struct ifnet *ifp;
541 struct ifmultiaddr *ifma;
542 uint32_t h, hashes[2];
543 uint8_t rxcfg;
544 int error = 0;
545
546 VGE_LOCK_ASSERT(sc);
547
548 /* First, zot all the multicast entries. */
549 hashes[0] = 0;
550 hashes[1] = 0;
551
552 rxcfg = CSR_READ_1(sc, VGE_RXCTL);
553 rxcfg &= ~(VGE_RXCTL_RX_MCAST | VGE_RXCTL_RX_BCAST |
554 VGE_RXCTL_RX_PROMISC);
555 /*
556 * Always allow VLAN oversized frames and frames for
557 * this host.
558 */
559 rxcfg |= VGE_RXCTL_RX_GIANT | VGE_RXCTL_RX_UCAST;
560
561 ifp = sc->vge_ifp;
562 if ((ifp->if_flags & IFF_BROADCAST) != 0)
563 rxcfg |= VGE_RXCTL_RX_BCAST;
564 if ((ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI)) != 0) {
565 if ((ifp->if_flags & IFF_PROMISC) != 0)
566 rxcfg |= VGE_RXCTL_RX_PROMISC;
567 if ((ifp->if_flags & IFF_ALLMULTI) != 0) {
568 hashes[0] = 0xFFFFFFFF;
569 hashes[1] = 0xFFFFFFFF;
570 }
571 goto done;
572 }
573
574 vge_cam_clear(sc);
575 /* Now program new ones */
576 if_maddr_rlock(ifp);
577 CK_STAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
578 if (ifma->ifma_addr->sa_family != AF_LINK)
579 continue;
580 error = vge_cam_set(sc,
581 LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
582 if (error)
583 break;
584 }
585
586 /* If there were too many addresses, use the hash filter. */
587 if (error) {
588 vge_cam_clear(sc);
589
590 CK_STAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
591 if (ifma->ifma_addr->sa_family != AF_LINK)
592 continue;
593 h = ether_crc32_be(LLADDR((struct sockaddr_dl *)
594 ifma->ifma_addr), ETHER_ADDR_LEN) >> 26;
595 if (h < 32)
596 hashes[0] |= (1 << h);
597 else
598 hashes[1] |= (1 << (h - 32));
599 }
600 }
601 if_maddr_runlock(ifp);
602
603 done:
604 if (hashes[0] != 0 || hashes[1] != 0)
605 rxcfg |= VGE_RXCTL_RX_MCAST;
606 CSR_WRITE_4(sc, VGE_MAR0, hashes[0]);
607 CSR_WRITE_4(sc, VGE_MAR1, hashes[1]);
608 CSR_WRITE_1(sc, VGE_RXCTL, rxcfg);
609 }
610
611 static void
vge_reset(struct vge_softc * sc)612 vge_reset(struct vge_softc *sc)
613 {
614 int i;
615
616 CSR_WRITE_1(sc, VGE_CRS1, VGE_CR1_SOFTRESET);
617
618 for (i = 0; i < VGE_TIMEOUT; i++) {
619 DELAY(5);
620 if ((CSR_READ_1(sc, VGE_CRS1) & VGE_CR1_SOFTRESET) == 0)
621 break;
622 }
623
624 if (i == VGE_TIMEOUT) {
625 device_printf(sc->vge_dev, "soft reset timed out\n");
626 CSR_WRITE_1(sc, VGE_CRS3, VGE_CR3_STOP_FORCE);
627 DELAY(2000);
628 }
629
630 DELAY(5000);
631 }
632
633 /*
634 * Probe for a VIA gigabit chip. Check the PCI vendor and device
635 * IDs against our list and return a device name if we find a match.
636 */
637 static int
vge_probe(device_t dev)638 vge_probe(device_t dev)
639 {
640 struct vge_type *t;
641
642 t = vge_devs;
643
644 while (t->vge_name != NULL) {
645 if ((pci_get_vendor(dev) == t->vge_vid) &&
646 (pci_get_device(dev) == t->vge_did)) {
647 device_set_desc(dev, t->vge_name);
648 return (BUS_PROBE_DEFAULT);
649 }
650 t++;
651 }
652
653 return (ENXIO);
654 }
655
656 /*
657 * Map a single buffer address.
658 */
659
660 struct vge_dmamap_arg {
661 bus_addr_t vge_busaddr;
662 };
663
664 static void
vge_dmamap_cb(void * arg,bus_dma_segment_t * segs,int nsegs,int error)665 vge_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
666 {
667 struct vge_dmamap_arg *ctx;
668
669 if (error != 0)
670 return;
671
672 KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs));
673
674 ctx = (struct vge_dmamap_arg *)arg;
675 ctx->vge_busaddr = segs[0].ds_addr;
676 }
677
678 static int
vge_dma_alloc(struct vge_softc * sc)679 vge_dma_alloc(struct vge_softc *sc)
680 {
681 struct vge_dmamap_arg ctx;
682 struct vge_txdesc *txd;
683 struct vge_rxdesc *rxd;
684 bus_addr_t lowaddr, tx_ring_end, rx_ring_end;
685 int error, i;
686
687 /*
688 * It seems old PCI controllers do not support DAC. DAC
689 * configuration can be enabled by accessing VGE_CHIPCFG3
690 * register but honor EEPROM configuration instead of
691 * blindly overriding DAC configuration. PCIe based
692 * controllers are supposed to support 64bit DMA so enable
693 * 64bit DMA on these controllers.
694 */
695 if ((sc->vge_flags & VGE_FLAG_PCIE) != 0)
696 lowaddr = BUS_SPACE_MAXADDR;
697 else
698 lowaddr = BUS_SPACE_MAXADDR_32BIT;
699
700 again:
701 /* Create parent ring tag. */
702 error = bus_dma_tag_create(bus_get_dma_tag(sc->vge_dev),/* parent */
703 1, 0, /* algnmnt, boundary */
704 lowaddr, /* lowaddr */
705 BUS_SPACE_MAXADDR, /* highaddr */
706 NULL, NULL, /* filter, filterarg */
707 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
708 0, /* nsegments */
709 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
710 0, /* flags */
711 NULL, NULL, /* lockfunc, lockarg */
712 &sc->vge_cdata.vge_ring_tag);
713 if (error != 0) {
714 device_printf(sc->vge_dev,
715 "could not create parent DMA tag.\n");
716 goto fail;
717 }
718
719 /* Create tag for Tx ring. */
720 error = bus_dma_tag_create(sc->vge_cdata.vge_ring_tag,/* parent */
721 VGE_TX_RING_ALIGN, 0, /* algnmnt, boundary */
722 BUS_SPACE_MAXADDR, /* lowaddr */
723 BUS_SPACE_MAXADDR, /* highaddr */
724 NULL, NULL, /* filter, filterarg */
725 VGE_TX_LIST_SZ, /* maxsize */
726 1, /* nsegments */
727 VGE_TX_LIST_SZ, /* maxsegsize */
728 0, /* flags */
729 NULL, NULL, /* lockfunc, lockarg */
730 &sc->vge_cdata.vge_tx_ring_tag);
731 if (error != 0) {
732 device_printf(sc->vge_dev,
733 "could not allocate Tx ring DMA tag.\n");
734 goto fail;
735 }
736
737 /* Create tag for Rx ring. */
738 error = bus_dma_tag_create(sc->vge_cdata.vge_ring_tag,/* parent */
739 VGE_RX_RING_ALIGN, 0, /* algnmnt, boundary */
740 BUS_SPACE_MAXADDR, /* lowaddr */
741 BUS_SPACE_MAXADDR, /* highaddr */
742 NULL, NULL, /* filter, filterarg */
743 VGE_RX_LIST_SZ, /* maxsize */
744 1, /* nsegments */
745 VGE_RX_LIST_SZ, /* maxsegsize */
746 0, /* flags */
747 NULL, NULL, /* lockfunc, lockarg */
748 &sc->vge_cdata.vge_rx_ring_tag);
749 if (error != 0) {
750 device_printf(sc->vge_dev,
751 "could not allocate Rx ring DMA tag.\n");
752 goto fail;
753 }
754
755 /* Allocate DMA'able memory and load the DMA map for Tx ring. */
756 error = bus_dmamem_alloc(sc->vge_cdata.vge_tx_ring_tag,
757 (void **)&sc->vge_rdata.vge_tx_ring,
758 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
759 &sc->vge_cdata.vge_tx_ring_map);
760 if (error != 0) {
761 device_printf(sc->vge_dev,
762 "could not allocate DMA'able memory for Tx ring.\n");
763 goto fail;
764 }
765
766 ctx.vge_busaddr = 0;
767 error = bus_dmamap_load(sc->vge_cdata.vge_tx_ring_tag,
768 sc->vge_cdata.vge_tx_ring_map, sc->vge_rdata.vge_tx_ring,
769 VGE_TX_LIST_SZ, vge_dmamap_cb, &ctx, BUS_DMA_NOWAIT);
770 if (error != 0 || ctx.vge_busaddr == 0) {
771 device_printf(sc->vge_dev,
772 "could not load DMA'able memory for Tx ring.\n");
773 goto fail;
774 }
775 sc->vge_rdata.vge_tx_ring_paddr = ctx.vge_busaddr;
776
777 /* Allocate DMA'able memory and load the DMA map for Rx ring. */
778 error = bus_dmamem_alloc(sc->vge_cdata.vge_rx_ring_tag,
779 (void **)&sc->vge_rdata.vge_rx_ring,
780 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
781 &sc->vge_cdata.vge_rx_ring_map);
782 if (error != 0) {
783 device_printf(sc->vge_dev,
784 "could not allocate DMA'able memory for Rx ring.\n");
785 goto fail;
786 }
787
788 ctx.vge_busaddr = 0;
789 error = bus_dmamap_load(sc->vge_cdata.vge_rx_ring_tag,
790 sc->vge_cdata.vge_rx_ring_map, sc->vge_rdata.vge_rx_ring,
791 VGE_RX_LIST_SZ, vge_dmamap_cb, &ctx, BUS_DMA_NOWAIT);
792 if (error != 0 || ctx.vge_busaddr == 0) {
793 device_printf(sc->vge_dev,
794 "could not load DMA'able memory for Rx ring.\n");
795 goto fail;
796 }
797 sc->vge_rdata.vge_rx_ring_paddr = ctx.vge_busaddr;
798
799 /* Tx/Rx descriptor queue should reside within 4GB boundary. */
800 tx_ring_end = sc->vge_rdata.vge_tx_ring_paddr + VGE_TX_LIST_SZ;
801 rx_ring_end = sc->vge_rdata.vge_rx_ring_paddr + VGE_RX_LIST_SZ;
802 if ((VGE_ADDR_HI(tx_ring_end) !=
803 VGE_ADDR_HI(sc->vge_rdata.vge_tx_ring_paddr)) ||
804 (VGE_ADDR_HI(rx_ring_end) !=
805 VGE_ADDR_HI(sc->vge_rdata.vge_rx_ring_paddr)) ||
806 VGE_ADDR_HI(tx_ring_end) != VGE_ADDR_HI(rx_ring_end)) {
807 device_printf(sc->vge_dev, "4GB boundary crossed, "
808 "switching to 32bit DMA address mode.\n");
809 vge_dma_free(sc);
810 /* Limit DMA address space to 32bit and try again. */
811 lowaddr = BUS_SPACE_MAXADDR_32BIT;
812 goto again;
813 }
814
815 if ((sc->vge_flags & VGE_FLAG_PCIE) != 0)
816 lowaddr = VGE_BUF_DMA_MAXADDR;
817 else
818 lowaddr = BUS_SPACE_MAXADDR_32BIT;
819 /* Create parent buffer tag. */
820 error = bus_dma_tag_create(bus_get_dma_tag(sc->vge_dev),/* parent */
821 1, 0, /* algnmnt, boundary */
822 lowaddr, /* lowaddr */
823 BUS_SPACE_MAXADDR, /* highaddr */
824 NULL, NULL, /* filter, filterarg */
825 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
826 0, /* nsegments */
827 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
828 0, /* flags */
829 NULL, NULL, /* lockfunc, lockarg */
830 &sc->vge_cdata.vge_buffer_tag);
831 if (error != 0) {
832 device_printf(sc->vge_dev,
833 "could not create parent buffer DMA tag.\n");
834 goto fail;
835 }
836
837 /* Create tag for Tx buffers. */
838 error = bus_dma_tag_create(sc->vge_cdata.vge_buffer_tag,/* parent */
839 1, 0, /* algnmnt, boundary */
840 BUS_SPACE_MAXADDR, /* lowaddr */
841 BUS_SPACE_MAXADDR, /* highaddr */
842 NULL, NULL, /* filter, filterarg */
843 MCLBYTES * VGE_MAXTXSEGS, /* maxsize */
844 VGE_MAXTXSEGS, /* nsegments */
845 MCLBYTES, /* maxsegsize */
846 0, /* flags */
847 NULL, NULL, /* lockfunc, lockarg */
848 &sc->vge_cdata.vge_tx_tag);
849 if (error != 0) {
850 device_printf(sc->vge_dev, "could not create Tx DMA tag.\n");
851 goto fail;
852 }
853
854 /* Create tag for Rx buffers. */
855 error = bus_dma_tag_create(sc->vge_cdata.vge_buffer_tag,/* parent */
856 VGE_RX_BUF_ALIGN, 0, /* algnmnt, boundary */
857 BUS_SPACE_MAXADDR, /* lowaddr */
858 BUS_SPACE_MAXADDR, /* highaddr */
859 NULL, NULL, /* filter, filterarg */
860 MCLBYTES, /* maxsize */
861 1, /* nsegments */
862 MCLBYTES, /* maxsegsize */
863 0, /* flags */
864 NULL, NULL, /* lockfunc, lockarg */
865 &sc->vge_cdata.vge_rx_tag);
866 if (error != 0) {
867 device_printf(sc->vge_dev, "could not create Rx DMA tag.\n");
868 goto fail;
869 }
870
871 /* Create DMA maps for Tx buffers. */
872 for (i = 0; i < VGE_TX_DESC_CNT; i++) {
873 txd = &sc->vge_cdata.vge_txdesc[i];
874 txd->tx_m = NULL;
875 txd->tx_dmamap = NULL;
876 error = bus_dmamap_create(sc->vge_cdata.vge_tx_tag, 0,
877 &txd->tx_dmamap);
878 if (error != 0) {
879 device_printf(sc->vge_dev,
880 "could not create Tx dmamap.\n");
881 goto fail;
882 }
883 }
884 /* Create DMA maps for Rx buffers. */
885 if ((error = bus_dmamap_create(sc->vge_cdata.vge_rx_tag, 0,
886 &sc->vge_cdata.vge_rx_sparemap)) != 0) {
887 device_printf(sc->vge_dev,
888 "could not create spare Rx dmamap.\n");
889 goto fail;
890 }
891 for (i = 0; i < VGE_RX_DESC_CNT; i++) {
892 rxd = &sc->vge_cdata.vge_rxdesc[i];
893 rxd->rx_m = NULL;
894 rxd->rx_dmamap = NULL;
895 error = bus_dmamap_create(sc->vge_cdata.vge_rx_tag, 0,
896 &rxd->rx_dmamap);
897 if (error != 0) {
898 device_printf(sc->vge_dev,
899 "could not create Rx dmamap.\n");
900 goto fail;
901 }
902 }
903
904 fail:
905 return (error);
906 }
907
908 static void
vge_dma_free(struct vge_softc * sc)909 vge_dma_free(struct vge_softc *sc)
910 {
911 struct vge_txdesc *txd;
912 struct vge_rxdesc *rxd;
913 int i;
914
915 /* Tx ring. */
916 if (sc->vge_cdata.vge_tx_ring_tag != NULL) {
917 if (sc->vge_rdata.vge_tx_ring_paddr)
918 bus_dmamap_unload(sc->vge_cdata.vge_tx_ring_tag,
919 sc->vge_cdata.vge_tx_ring_map);
920 if (sc->vge_rdata.vge_tx_ring)
921 bus_dmamem_free(sc->vge_cdata.vge_tx_ring_tag,
922 sc->vge_rdata.vge_tx_ring,
923 sc->vge_cdata.vge_tx_ring_map);
924 sc->vge_rdata.vge_tx_ring = NULL;
925 sc->vge_rdata.vge_tx_ring_paddr = 0;
926 bus_dma_tag_destroy(sc->vge_cdata.vge_tx_ring_tag);
927 sc->vge_cdata.vge_tx_ring_tag = NULL;
928 }
929 /* Rx ring. */
930 if (sc->vge_cdata.vge_rx_ring_tag != NULL) {
931 if (sc->vge_rdata.vge_rx_ring_paddr)
932 bus_dmamap_unload(sc->vge_cdata.vge_rx_ring_tag,
933 sc->vge_cdata.vge_rx_ring_map);
934 if (sc->vge_rdata.vge_rx_ring)
935 bus_dmamem_free(sc->vge_cdata.vge_rx_ring_tag,
936 sc->vge_rdata.vge_rx_ring,
937 sc->vge_cdata.vge_rx_ring_map);
938 sc->vge_rdata.vge_rx_ring = NULL;
939 sc->vge_rdata.vge_rx_ring_paddr = 0;
940 bus_dma_tag_destroy(sc->vge_cdata.vge_rx_ring_tag);
941 sc->vge_cdata.vge_rx_ring_tag = NULL;
942 }
943 /* Tx buffers. */
944 if (sc->vge_cdata.vge_tx_tag != NULL) {
945 for (i = 0; i < VGE_TX_DESC_CNT; i++) {
946 txd = &sc->vge_cdata.vge_txdesc[i];
947 if (txd->tx_dmamap != NULL) {
948 bus_dmamap_destroy(sc->vge_cdata.vge_tx_tag,
949 txd->tx_dmamap);
950 txd->tx_dmamap = NULL;
951 }
952 }
953 bus_dma_tag_destroy(sc->vge_cdata.vge_tx_tag);
954 sc->vge_cdata.vge_tx_tag = NULL;
955 }
956 /* Rx buffers. */
957 if (sc->vge_cdata.vge_rx_tag != NULL) {
958 for (i = 0; i < VGE_RX_DESC_CNT; i++) {
959 rxd = &sc->vge_cdata.vge_rxdesc[i];
960 if (rxd->rx_dmamap != NULL) {
961 bus_dmamap_destroy(sc->vge_cdata.vge_rx_tag,
962 rxd->rx_dmamap);
963 rxd->rx_dmamap = NULL;
964 }
965 }
966 if (sc->vge_cdata.vge_rx_sparemap != NULL) {
967 bus_dmamap_destroy(sc->vge_cdata.vge_rx_tag,
968 sc->vge_cdata.vge_rx_sparemap);
969 sc->vge_cdata.vge_rx_sparemap = NULL;
970 }
971 bus_dma_tag_destroy(sc->vge_cdata.vge_rx_tag);
972 sc->vge_cdata.vge_rx_tag = NULL;
973 }
974
975 if (sc->vge_cdata.vge_buffer_tag != NULL) {
976 bus_dma_tag_destroy(sc->vge_cdata.vge_buffer_tag);
977 sc->vge_cdata.vge_buffer_tag = NULL;
978 }
979 if (sc->vge_cdata.vge_ring_tag != NULL) {
980 bus_dma_tag_destroy(sc->vge_cdata.vge_ring_tag);
981 sc->vge_cdata.vge_ring_tag = NULL;
982 }
983 }
984
985 /*
986 * Attach the interface. Allocate softc structures, do ifmedia
987 * setup and ethernet/BPF attach.
988 */
989 static int
vge_attach(device_t dev)990 vge_attach(device_t dev)
991 {
992 u_char eaddr[ETHER_ADDR_LEN];
993 struct vge_softc *sc;
994 struct ifnet *ifp;
995 int error = 0, cap, i, msic, rid;
996
997 sc = device_get_softc(dev);
998 sc->vge_dev = dev;
999
1000 mtx_init(&sc->vge_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
1001 MTX_DEF);
1002 callout_init_mtx(&sc->vge_watchdog, &sc->vge_mtx, 0);
1003
1004 /*
1005 * Map control/status registers.
1006 */
1007 pci_enable_busmaster(dev);
1008
1009 rid = PCIR_BAR(1);
1010 sc->vge_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
1011 RF_ACTIVE);
1012
1013 if (sc->vge_res == NULL) {
1014 device_printf(dev, "couldn't map ports/memory\n");
1015 error = ENXIO;
1016 goto fail;
1017 }
1018
1019 if (pci_find_cap(dev, PCIY_EXPRESS, &cap) == 0) {
1020 sc->vge_flags |= VGE_FLAG_PCIE;
1021 sc->vge_expcap = cap;
1022 } else
1023 sc->vge_flags |= VGE_FLAG_JUMBO;
1024 if (pci_find_cap(dev, PCIY_PMG, &cap) == 0) {
1025 sc->vge_flags |= VGE_FLAG_PMCAP;
1026 sc->vge_pmcap = cap;
1027 }
1028 rid = 0;
1029 msic = pci_msi_count(dev);
1030 if (msi_disable == 0 && msic > 0) {
1031 msic = 1;
1032 if (pci_alloc_msi(dev, &msic) == 0) {
1033 if (msic == 1) {
1034 sc->vge_flags |= VGE_FLAG_MSI;
1035 device_printf(dev, "Using %d MSI message\n",
1036 msic);
1037 rid = 1;
1038 } else
1039 pci_release_msi(dev);
1040 }
1041 }
1042
1043 /* Allocate interrupt */
1044 sc->vge_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
1045 ((sc->vge_flags & VGE_FLAG_MSI) ? 0 : RF_SHAREABLE) | RF_ACTIVE);
1046 if (sc->vge_irq == NULL) {
1047 device_printf(dev, "couldn't map interrupt\n");
1048 error = ENXIO;
1049 goto fail;
1050 }
1051
1052 /* Reset the adapter. */
1053 vge_reset(sc);
1054 /* Reload EEPROM. */
1055 CSR_WRITE_1(sc, VGE_EECSR, VGE_EECSR_RELOAD);
1056 for (i = 0; i < VGE_TIMEOUT; i++) {
1057 DELAY(5);
1058 if ((CSR_READ_1(sc, VGE_EECSR) & VGE_EECSR_RELOAD) == 0)
1059 break;
1060 }
1061 if (i == VGE_TIMEOUT)
1062 device_printf(dev, "EEPROM reload timed out\n");
1063 /*
1064 * Clear PACPI as EEPROM reload will set the bit. Otherwise
1065 * MAC will receive magic packet which in turn confuses
1066 * controller.
1067 */
1068 CSR_CLRBIT_1(sc, VGE_CHIPCFG0, VGE_CHIPCFG0_PACPI);
1069
1070 /*
1071 * Get station address from the EEPROM.
1072 */
1073 vge_read_eeprom(sc, (caddr_t)eaddr, VGE_EE_EADDR, 3, 0);
1074 /*
1075 * Save configured PHY address.
1076 * It seems the PHY address of PCIe controllers just
1077 * reflects media jump strapping status so we assume the
1078 * internal PHY address of PCIe controller is at 1.
1079 */
1080 if ((sc->vge_flags & VGE_FLAG_PCIE) != 0)
1081 sc->vge_phyaddr = 1;
1082 else
1083 sc->vge_phyaddr = CSR_READ_1(sc, VGE_MIICFG) &
1084 VGE_MIICFG_PHYADDR;
1085 /* Clear WOL and take hardware from powerdown. */
1086 vge_clrwol(sc);
1087 vge_sysctl_node(sc);
1088 error = vge_dma_alloc(sc);
1089 if (error)
1090 goto fail;
1091
1092 ifp = sc->vge_ifp = if_alloc(IFT_ETHER);
1093 if (ifp == NULL) {
1094 device_printf(dev, "can not if_alloc()\n");
1095 error = ENOSPC;
1096 goto fail;
1097 }
1098
1099 vge_miipoll_start(sc);
1100 /* Do MII setup */
1101 error = mii_attach(dev, &sc->vge_miibus, ifp, vge_ifmedia_upd,
1102 vge_ifmedia_sts, BMSR_DEFCAPMASK, sc->vge_phyaddr, MII_OFFSET_ANY,
1103 MIIF_DOPAUSE);
1104 if (error != 0) {
1105 device_printf(dev, "attaching PHYs failed\n");
1106 goto fail;
1107 }
1108
1109 ifp->if_softc = sc;
1110 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
1111 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
1112 ifp->if_ioctl = vge_ioctl;
1113 ifp->if_capabilities = IFCAP_VLAN_MTU;
1114 ifp->if_start = vge_start;
1115 ifp->if_hwassist = VGE_CSUM_FEATURES;
1116 ifp->if_capabilities |= IFCAP_HWCSUM | IFCAP_VLAN_HWCSUM |
1117 IFCAP_VLAN_HWTAGGING;
1118 if ((sc->vge_flags & VGE_FLAG_PMCAP) != 0)
1119 ifp->if_capabilities |= IFCAP_WOL;
1120 ifp->if_capenable = ifp->if_capabilities;
1121 #ifdef DEVICE_POLLING
1122 ifp->if_capabilities |= IFCAP_POLLING;
1123 #endif
1124 ifp->if_init = vge_init;
1125 IFQ_SET_MAXLEN(&ifp->if_snd, VGE_TX_DESC_CNT - 1);
1126 ifp->if_snd.ifq_drv_maxlen = VGE_TX_DESC_CNT - 1;
1127 IFQ_SET_READY(&ifp->if_snd);
1128
1129 /*
1130 * Call MI attach routine.
1131 */
1132 ether_ifattach(ifp, eaddr);
1133
1134 /* Tell the upper layer(s) we support long frames. */
1135 ifp->if_hdrlen = sizeof(struct ether_vlan_header);
1136
1137 /* Hook interrupt last to avoid having to lock softc */
1138 error = bus_setup_intr(dev, sc->vge_irq, INTR_TYPE_NET|INTR_MPSAFE,
1139 NULL, vge_intr, sc, &sc->vge_intrhand);
1140
1141 if (error) {
1142 device_printf(dev, "couldn't set up irq\n");
1143 ether_ifdetach(ifp);
1144 goto fail;
1145 }
1146
1147 fail:
1148 if (error)
1149 vge_detach(dev);
1150
1151 return (error);
1152 }
1153
1154 /*
1155 * Shutdown hardware and free up resources. This can be called any
1156 * time after the mutex has been initialized. It is called in both
1157 * the error case in attach and the normal detach case so it needs
1158 * to be careful about only freeing resources that have actually been
1159 * allocated.
1160 */
1161 static int
vge_detach(device_t dev)1162 vge_detach(device_t dev)
1163 {
1164 struct vge_softc *sc;
1165 struct ifnet *ifp;
1166
1167 sc = device_get_softc(dev);
1168 KASSERT(mtx_initialized(&sc->vge_mtx), ("vge mutex not initialized"));
1169 ifp = sc->vge_ifp;
1170
1171 #ifdef DEVICE_POLLING
1172 if (ifp->if_capenable & IFCAP_POLLING)
1173 ether_poll_deregister(ifp);
1174 #endif
1175
1176 /* These should only be active if attach succeeded */
1177 if (device_is_attached(dev)) {
1178 ether_ifdetach(ifp);
1179 VGE_LOCK(sc);
1180 vge_stop(sc);
1181 VGE_UNLOCK(sc);
1182 callout_drain(&sc->vge_watchdog);
1183 }
1184 if (sc->vge_miibus)
1185 device_delete_child(dev, sc->vge_miibus);
1186 bus_generic_detach(dev);
1187
1188 if (sc->vge_intrhand)
1189 bus_teardown_intr(dev, sc->vge_irq, sc->vge_intrhand);
1190 if (sc->vge_irq)
1191 bus_release_resource(dev, SYS_RES_IRQ,
1192 sc->vge_flags & VGE_FLAG_MSI ? 1 : 0, sc->vge_irq);
1193 if (sc->vge_flags & VGE_FLAG_MSI)
1194 pci_release_msi(dev);
1195 if (sc->vge_res)
1196 bus_release_resource(dev, SYS_RES_MEMORY,
1197 PCIR_BAR(1), sc->vge_res);
1198 if (ifp)
1199 if_free(ifp);
1200
1201 vge_dma_free(sc);
1202 mtx_destroy(&sc->vge_mtx);
1203
1204 return (0);
1205 }
1206
1207 static void
vge_discard_rxbuf(struct vge_softc * sc,int prod)1208 vge_discard_rxbuf(struct vge_softc *sc, int prod)
1209 {
1210 struct vge_rxdesc *rxd;
1211 int i;
1212
1213 rxd = &sc->vge_cdata.vge_rxdesc[prod];
1214 rxd->rx_desc->vge_sts = 0;
1215 rxd->rx_desc->vge_ctl = 0;
1216
1217 /*
1218 * Note: the manual fails to document the fact that for
1219 * proper opration, the driver needs to replentish the RX
1220 * DMA ring 4 descriptors at a time (rather than one at a
1221 * time, like most chips). We can allocate the new buffers
1222 * but we should not set the OWN bits until we're ready
1223 * to hand back 4 of them in one shot.
1224 */
1225 if ((prod % VGE_RXCHUNK) == (VGE_RXCHUNK - 1)) {
1226 for (i = VGE_RXCHUNK; i > 0; i--) {
1227 rxd->rx_desc->vge_sts = htole32(VGE_RDSTS_OWN);
1228 rxd = rxd->rxd_prev;
1229 }
1230 sc->vge_cdata.vge_rx_commit += VGE_RXCHUNK;
1231 }
1232 }
1233
1234 static int
vge_newbuf(struct vge_softc * sc,int prod)1235 vge_newbuf(struct vge_softc *sc, int prod)
1236 {
1237 struct vge_rxdesc *rxd;
1238 struct mbuf *m;
1239 bus_dma_segment_t segs[1];
1240 bus_dmamap_t map;
1241 int i, nsegs;
1242
1243 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1244 if (m == NULL)
1245 return (ENOBUFS);
1246 /*
1247 * This is part of an evil trick to deal with strict-alignment
1248 * architectures. The VIA chip requires RX buffers to be aligned
1249 * on 32-bit boundaries, but that will hose strict-alignment
1250 * architectures. To get around this, we leave some empty space
1251 * at the start of each buffer and for non-strict-alignment hosts,
1252 * we copy the buffer back two bytes to achieve word alignment.
1253 * This is slightly more efficient than allocating a new buffer,
1254 * copying the contents, and discarding the old buffer.
1255 */
1256 m->m_len = m->m_pkthdr.len = MCLBYTES;
1257 m_adj(m, VGE_RX_BUF_ALIGN);
1258
1259 if (bus_dmamap_load_mbuf_sg(sc->vge_cdata.vge_rx_tag,
1260 sc->vge_cdata.vge_rx_sparemap, m, segs, &nsegs, 0) != 0) {
1261 m_freem(m);
1262 return (ENOBUFS);
1263 }
1264 KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs));
1265
1266 rxd = &sc->vge_cdata.vge_rxdesc[prod];
1267 if (rxd->rx_m != NULL) {
1268 bus_dmamap_sync(sc->vge_cdata.vge_rx_tag, rxd->rx_dmamap,
1269 BUS_DMASYNC_POSTREAD);
1270 bus_dmamap_unload(sc->vge_cdata.vge_rx_tag, rxd->rx_dmamap);
1271 }
1272 map = rxd->rx_dmamap;
1273 rxd->rx_dmamap = sc->vge_cdata.vge_rx_sparemap;
1274 sc->vge_cdata.vge_rx_sparemap = map;
1275 bus_dmamap_sync(sc->vge_cdata.vge_rx_tag, rxd->rx_dmamap,
1276 BUS_DMASYNC_PREREAD);
1277 rxd->rx_m = m;
1278
1279 rxd->rx_desc->vge_sts = 0;
1280 rxd->rx_desc->vge_ctl = 0;
1281 rxd->rx_desc->vge_addrlo = htole32(VGE_ADDR_LO(segs[0].ds_addr));
1282 rxd->rx_desc->vge_addrhi = htole32(VGE_ADDR_HI(segs[0].ds_addr) |
1283 (VGE_BUFLEN(segs[0].ds_len) << 16) | VGE_RXDESC_I);
1284
1285 /*
1286 * Note: the manual fails to document the fact that for
1287 * proper operation, the driver needs to replenish the RX
1288 * DMA ring 4 descriptors at a time (rather than one at a
1289 * time, like most chips). We can allocate the new buffers
1290 * but we should not set the OWN bits until we're ready
1291 * to hand back 4 of them in one shot.
1292 */
1293 if ((prod % VGE_RXCHUNK) == (VGE_RXCHUNK - 1)) {
1294 for (i = VGE_RXCHUNK; i > 0; i--) {
1295 rxd->rx_desc->vge_sts = htole32(VGE_RDSTS_OWN);
1296 rxd = rxd->rxd_prev;
1297 }
1298 sc->vge_cdata.vge_rx_commit += VGE_RXCHUNK;
1299 }
1300
1301 return (0);
1302 }
1303
1304 static int
vge_tx_list_init(struct vge_softc * sc)1305 vge_tx_list_init(struct vge_softc *sc)
1306 {
1307 struct vge_ring_data *rd;
1308 struct vge_txdesc *txd;
1309 int i;
1310
1311 VGE_LOCK_ASSERT(sc);
1312
1313 sc->vge_cdata.vge_tx_prodidx = 0;
1314 sc->vge_cdata.vge_tx_considx = 0;
1315 sc->vge_cdata.vge_tx_cnt = 0;
1316
1317 rd = &sc->vge_rdata;
1318 bzero(rd->vge_tx_ring, VGE_TX_LIST_SZ);
1319 for (i = 0; i < VGE_TX_DESC_CNT; i++) {
1320 txd = &sc->vge_cdata.vge_txdesc[i];
1321 txd->tx_m = NULL;
1322 txd->tx_desc = &rd->vge_tx_ring[i];
1323 }
1324
1325 bus_dmamap_sync(sc->vge_cdata.vge_tx_ring_tag,
1326 sc->vge_cdata.vge_tx_ring_map,
1327 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1328
1329 return (0);
1330 }
1331
1332 static int
vge_rx_list_init(struct vge_softc * sc)1333 vge_rx_list_init(struct vge_softc *sc)
1334 {
1335 struct vge_ring_data *rd;
1336 struct vge_rxdesc *rxd;
1337 int i;
1338
1339 VGE_LOCK_ASSERT(sc);
1340
1341 sc->vge_cdata.vge_rx_prodidx = 0;
1342 sc->vge_cdata.vge_head = NULL;
1343 sc->vge_cdata.vge_tail = NULL;
1344 sc->vge_cdata.vge_rx_commit = 0;
1345
1346 rd = &sc->vge_rdata;
1347 bzero(rd->vge_rx_ring, VGE_RX_LIST_SZ);
1348 for (i = 0; i < VGE_RX_DESC_CNT; i++) {
1349 rxd = &sc->vge_cdata.vge_rxdesc[i];
1350 rxd->rx_m = NULL;
1351 rxd->rx_desc = &rd->vge_rx_ring[i];
1352 if (i == 0)
1353 rxd->rxd_prev =
1354 &sc->vge_cdata.vge_rxdesc[VGE_RX_DESC_CNT - 1];
1355 else
1356 rxd->rxd_prev = &sc->vge_cdata.vge_rxdesc[i - 1];
1357 if (vge_newbuf(sc, i) != 0)
1358 return (ENOBUFS);
1359 }
1360
1361 bus_dmamap_sync(sc->vge_cdata.vge_rx_ring_tag,
1362 sc->vge_cdata.vge_rx_ring_map,
1363 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1364
1365 sc->vge_cdata.vge_rx_commit = 0;
1366
1367 return (0);
1368 }
1369
1370 static void
vge_freebufs(struct vge_softc * sc)1371 vge_freebufs(struct vge_softc *sc)
1372 {
1373 struct vge_txdesc *txd;
1374 struct vge_rxdesc *rxd;
1375 struct ifnet *ifp;
1376 int i;
1377
1378 VGE_LOCK_ASSERT(sc);
1379
1380 ifp = sc->vge_ifp;
1381 /*
1382 * Free RX and TX mbufs still in the queues.
1383 */
1384 for (i = 0; i < VGE_RX_DESC_CNT; i++) {
1385 rxd = &sc->vge_cdata.vge_rxdesc[i];
1386 if (rxd->rx_m != NULL) {
1387 bus_dmamap_sync(sc->vge_cdata.vge_rx_tag,
1388 rxd->rx_dmamap, BUS_DMASYNC_POSTREAD);
1389 bus_dmamap_unload(sc->vge_cdata.vge_rx_tag,
1390 rxd->rx_dmamap);
1391 m_freem(rxd->rx_m);
1392 rxd->rx_m = NULL;
1393 }
1394 }
1395
1396 for (i = 0; i < VGE_TX_DESC_CNT; i++) {
1397 txd = &sc->vge_cdata.vge_txdesc[i];
1398 if (txd->tx_m != NULL) {
1399 bus_dmamap_sync(sc->vge_cdata.vge_tx_tag,
1400 txd->tx_dmamap, BUS_DMASYNC_POSTWRITE);
1401 bus_dmamap_unload(sc->vge_cdata.vge_tx_tag,
1402 txd->tx_dmamap);
1403 m_freem(txd->tx_m);
1404 txd->tx_m = NULL;
1405 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
1406 }
1407 }
1408 }
1409
1410 #ifndef __NO_STRICT_ALIGNMENT
1411 static __inline void
vge_fixup_rx(struct mbuf * m)1412 vge_fixup_rx(struct mbuf *m)
1413 {
1414 int i;
1415 uint16_t *src, *dst;
1416
1417 src = mtod(m, uint16_t *);
1418 dst = src - 1;
1419
1420 for (i = 0; i < (m->m_len / sizeof(uint16_t) + 1); i++)
1421 *dst++ = *src++;
1422
1423 m->m_data -= ETHER_ALIGN;
1424 }
1425 #endif
1426
1427 /*
1428 * RX handler. We support the reception of jumbo frames that have
1429 * been fragmented across multiple 2K mbuf cluster buffers.
1430 */
1431 static int
vge_rxeof(struct vge_softc * sc,int count)1432 vge_rxeof(struct vge_softc *sc, int count)
1433 {
1434 struct mbuf *m;
1435 struct ifnet *ifp;
1436 int prod, prog, total_len;
1437 struct vge_rxdesc *rxd;
1438 struct vge_rx_desc *cur_rx;
1439 uint32_t rxstat, rxctl;
1440
1441 VGE_LOCK_ASSERT(sc);
1442
1443 ifp = sc->vge_ifp;
1444
1445 bus_dmamap_sync(sc->vge_cdata.vge_rx_ring_tag,
1446 sc->vge_cdata.vge_rx_ring_map,
1447 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
1448
1449 prod = sc->vge_cdata.vge_rx_prodidx;
1450 for (prog = 0; count > 0 &&
1451 (ifp->if_drv_flags & IFF_DRV_RUNNING) != 0;
1452 VGE_RX_DESC_INC(prod)) {
1453 cur_rx = &sc->vge_rdata.vge_rx_ring[prod];
1454 rxstat = le32toh(cur_rx->vge_sts);
1455 if ((rxstat & VGE_RDSTS_OWN) != 0)
1456 break;
1457 count--;
1458 prog++;
1459 rxctl = le32toh(cur_rx->vge_ctl);
1460 total_len = VGE_RXBYTES(rxstat);
1461 rxd = &sc->vge_cdata.vge_rxdesc[prod];
1462 m = rxd->rx_m;
1463
1464 /*
1465 * If the 'start of frame' bit is set, this indicates
1466 * either the first fragment in a multi-fragment receive,
1467 * or an intermediate fragment. Either way, we want to
1468 * accumulate the buffers.
1469 */
1470 if ((rxstat & VGE_RXPKT_SOF) != 0) {
1471 if (vge_newbuf(sc, prod) != 0) {
1472 if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1);
1473 VGE_CHAIN_RESET(sc);
1474 vge_discard_rxbuf(sc, prod);
1475 continue;
1476 }
1477 m->m_len = MCLBYTES - VGE_RX_BUF_ALIGN;
1478 if (sc->vge_cdata.vge_head == NULL) {
1479 sc->vge_cdata.vge_head = m;
1480 sc->vge_cdata.vge_tail = m;
1481 } else {
1482 m->m_flags &= ~M_PKTHDR;
1483 sc->vge_cdata.vge_tail->m_next = m;
1484 sc->vge_cdata.vge_tail = m;
1485 }
1486 continue;
1487 }
1488
1489 /*
1490 * Bad/error frames will have the RXOK bit cleared.
1491 * However, there's one error case we want to allow:
1492 * if a VLAN tagged frame arrives and the chip can't
1493 * match it against the CAM filter, it considers this
1494 * a 'VLAN CAM filter miss' and clears the 'RXOK' bit.
1495 * We don't want to drop the frame though: our VLAN
1496 * filtering is done in software.
1497 * We also want to receive bad-checksummed frames and
1498 * and frames with bad-length.
1499 */
1500 if ((rxstat & VGE_RDSTS_RXOK) == 0 &&
1501 (rxstat & (VGE_RDSTS_VIDM | VGE_RDSTS_RLERR |
1502 VGE_RDSTS_CSUMERR)) == 0) {
1503 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
1504 /*
1505 * If this is part of a multi-fragment packet,
1506 * discard all the pieces.
1507 */
1508 VGE_CHAIN_RESET(sc);
1509 vge_discard_rxbuf(sc, prod);
1510 continue;
1511 }
1512
1513 if (vge_newbuf(sc, prod) != 0) {
1514 if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1);
1515 VGE_CHAIN_RESET(sc);
1516 vge_discard_rxbuf(sc, prod);
1517 continue;
1518 }
1519
1520 /* Chain received mbufs. */
1521 if (sc->vge_cdata.vge_head != NULL) {
1522 m->m_len = total_len % (MCLBYTES - VGE_RX_BUF_ALIGN);
1523 /*
1524 * Special case: if there's 4 bytes or less
1525 * in this buffer, the mbuf can be discarded:
1526 * the last 4 bytes is the CRC, which we don't
1527 * care about anyway.
1528 */
1529 if (m->m_len <= ETHER_CRC_LEN) {
1530 sc->vge_cdata.vge_tail->m_len -=
1531 (ETHER_CRC_LEN - m->m_len);
1532 m_freem(m);
1533 } else {
1534 m->m_len -= ETHER_CRC_LEN;
1535 m->m_flags &= ~M_PKTHDR;
1536 sc->vge_cdata.vge_tail->m_next = m;
1537 }
1538 m = sc->vge_cdata.vge_head;
1539 m->m_flags |= M_PKTHDR;
1540 m->m_pkthdr.len = total_len - ETHER_CRC_LEN;
1541 } else {
1542 m->m_flags |= M_PKTHDR;
1543 m->m_pkthdr.len = m->m_len =
1544 (total_len - ETHER_CRC_LEN);
1545 }
1546
1547 #ifndef __NO_STRICT_ALIGNMENT
1548 vge_fixup_rx(m);
1549 #endif
1550 m->m_pkthdr.rcvif = ifp;
1551
1552 /* Do RX checksumming if enabled */
1553 if ((ifp->if_capenable & IFCAP_RXCSUM) != 0 &&
1554 (rxctl & VGE_RDCTL_FRAG) == 0) {
1555 /* Check IP header checksum */
1556 if ((rxctl & VGE_RDCTL_IPPKT) != 0)
1557 m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED;
1558 if ((rxctl & VGE_RDCTL_IPCSUMOK) != 0)
1559 m->m_pkthdr.csum_flags |= CSUM_IP_VALID;
1560
1561 /* Check TCP/UDP checksum */
1562 if (rxctl & (VGE_RDCTL_TCPPKT | VGE_RDCTL_UDPPKT) &&
1563 rxctl & VGE_RDCTL_PROTOCSUMOK) {
1564 m->m_pkthdr.csum_flags |=
1565 CSUM_DATA_VALID | CSUM_PSEUDO_HDR;
1566 m->m_pkthdr.csum_data = 0xffff;
1567 }
1568 }
1569
1570 if ((rxstat & VGE_RDSTS_VTAG) != 0) {
1571 /*
1572 * The 32-bit rxctl register is stored in little-endian.
1573 * However, the 16-bit vlan tag is stored in big-endian,
1574 * so we have to byte swap it.
1575 */
1576 m->m_pkthdr.ether_vtag =
1577 bswap16(rxctl & VGE_RDCTL_VLANID);
1578 m->m_flags |= M_VLANTAG;
1579 }
1580
1581 VGE_UNLOCK(sc);
1582 (*ifp->if_input)(ifp, m);
1583 VGE_LOCK(sc);
1584 sc->vge_cdata.vge_head = NULL;
1585 sc->vge_cdata.vge_tail = NULL;
1586 }
1587
1588 if (prog > 0) {
1589 sc->vge_cdata.vge_rx_prodidx = prod;
1590 bus_dmamap_sync(sc->vge_cdata.vge_rx_ring_tag,
1591 sc->vge_cdata.vge_rx_ring_map,
1592 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1593 /* Update residue counter. */
1594 if (sc->vge_cdata.vge_rx_commit != 0) {
1595 CSR_WRITE_2(sc, VGE_RXDESC_RESIDUECNT,
1596 sc->vge_cdata.vge_rx_commit);
1597 sc->vge_cdata.vge_rx_commit = 0;
1598 }
1599 }
1600 return (prog);
1601 }
1602
1603 static void
vge_txeof(struct vge_softc * sc)1604 vge_txeof(struct vge_softc *sc)
1605 {
1606 struct ifnet *ifp;
1607 struct vge_tx_desc *cur_tx;
1608 struct vge_txdesc *txd;
1609 uint32_t txstat;
1610 int cons, prod;
1611
1612 VGE_LOCK_ASSERT(sc);
1613
1614 ifp = sc->vge_ifp;
1615
1616 if (sc->vge_cdata.vge_tx_cnt == 0)
1617 return;
1618
1619 bus_dmamap_sync(sc->vge_cdata.vge_tx_ring_tag,
1620 sc->vge_cdata.vge_tx_ring_map,
1621 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
1622
1623 /*
1624 * Go through our tx list and free mbufs for those
1625 * frames that have been transmitted.
1626 */
1627 cons = sc->vge_cdata.vge_tx_considx;
1628 prod = sc->vge_cdata.vge_tx_prodidx;
1629 for (; cons != prod; VGE_TX_DESC_INC(cons)) {
1630 cur_tx = &sc->vge_rdata.vge_tx_ring[cons];
1631 txstat = le32toh(cur_tx->vge_sts);
1632 if ((txstat & VGE_TDSTS_OWN) != 0)
1633 break;
1634 sc->vge_cdata.vge_tx_cnt--;
1635 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1636
1637 txd = &sc->vge_cdata.vge_txdesc[cons];
1638 bus_dmamap_sync(sc->vge_cdata.vge_tx_tag, txd->tx_dmamap,
1639 BUS_DMASYNC_POSTWRITE);
1640 bus_dmamap_unload(sc->vge_cdata.vge_tx_tag, txd->tx_dmamap);
1641
1642 KASSERT(txd->tx_m != NULL, ("%s: freeing NULL mbuf!\n",
1643 __func__));
1644 m_freem(txd->tx_m);
1645 txd->tx_m = NULL;
1646 txd->tx_desc->vge_frag[0].vge_addrhi = 0;
1647 }
1648 bus_dmamap_sync(sc->vge_cdata.vge_tx_ring_tag,
1649 sc->vge_cdata.vge_tx_ring_map,
1650 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1651 sc->vge_cdata.vge_tx_considx = cons;
1652 if (sc->vge_cdata.vge_tx_cnt == 0)
1653 sc->vge_timer = 0;
1654 }
1655
1656 static void
vge_link_statchg(void * xsc)1657 vge_link_statchg(void *xsc)
1658 {
1659 struct vge_softc *sc;
1660 struct ifnet *ifp;
1661 uint8_t physts;
1662
1663 sc = xsc;
1664 ifp = sc->vge_ifp;
1665 VGE_LOCK_ASSERT(sc);
1666
1667 physts = CSR_READ_1(sc, VGE_PHYSTS0);
1668 if ((physts & VGE_PHYSTS_RESETSTS) == 0) {
1669 if ((physts & VGE_PHYSTS_LINK) == 0) {
1670 sc->vge_flags &= ~VGE_FLAG_LINK;
1671 if_link_state_change(sc->vge_ifp,
1672 LINK_STATE_DOWN);
1673 } else {
1674 sc->vge_flags |= VGE_FLAG_LINK;
1675 if_link_state_change(sc->vge_ifp,
1676 LINK_STATE_UP);
1677 CSR_WRITE_1(sc, VGE_CRC2, VGE_CR2_FDX_TXFLOWCTL_ENABLE |
1678 VGE_CR2_FDX_RXFLOWCTL_ENABLE);
1679 if ((physts & VGE_PHYSTS_FDX) != 0) {
1680 if ((physts & VGE_PHYSTS_TXFLOWCAP) != 0)
1681 CSR_WRITE_1(sc, VGE_CRS2,
1682 VGE_CR2_FDX_TXFLOWCTL_ENABLE);
1683 if ((physts & VGE_PHYSTS_RXFLOWCAP) != 0)
1684 CSR_WRITE_1(sc, VGE_CRS2,
1685 VGE_CR2_FDX_RXFLOWCTL_ENABLE);
1686 }
1687 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
1688 vge_start_locked(ifp);
1689 }
1690 }
1691 /*
1692 * Restart MII auto-polling because link state change interrupt
1693 * will disable it.
1694 */
1695 vge_miipoll_start(sc);
1696 }
1697
1698 #ifdef DEVICE_POLLING
1699 static int
vge_poll(struct ifnet * ifp,enum poll_cmd cmd,int count)1700 vge_poll (struct ifnet *ifp, enum poll_cmd cmd, int count)
1701 {
1702 struct vge_softc *sc = ifp->if_softc;
1703 int rx_npkts = 0;
1704
1705 VGE_LOCK(sc);
1706 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
1707 goto done;
1708
1709 rx_npkts = vge_rxeof(sc, count);
1710 vge_txeof(sc);
1711
1712 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
1713 vge_start_locked(ifp);
1714
1715 if (cmd == POLL_AND_CHECK_STATUS) { /* also check status register */
1716 uint32_t status;
1717 status = CSR_READ_4(sc, VGE_ISR);
1718 if (status == 0xFFFFFFFF)
1719 goto done;
1720 if (status)
1721 CSR_WRITE_4(sc, VGE_ISR, status);
1722
1723 /*
1724 * XXX check behaviour on receiver stalls.
1725 */
1726
1727 if (status & VGE_ISR_TXDMA_STALL ||
1728 status & VGE_ISR_RXDMA_STALL) {
1729 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
1730 vge_init_locked(sc);
1731 }
1732
1733 if (status & (VGE_ISR_RXOFLOW|VGE_ISR_RXNODESC)) {
1734 vge_rxeof(sc, count);
1735 CSR_WRITE_1(sc, VGE_RXQCSRS, VGE_RXQCSR_RUN);
1736 CSR_WRITE_1(sc, VGE_RXQCSRS, VGE_RXQCSR_WAK);
1737 }
1738 }
1739 done:
1740 VGE_UNLOCK(sc);
1741 return (rx_npkts);
1742 }
1743 #endif /* DEVICE_POLLING */
1744
1745 static void
vge_intr(void * arg)1746 vge_intr(void *arg)
1747 {
1748 struct vge_softc *sc;
1749 struct ifnet *ifp;
1750 uint32_t status;
1751
1752 sc = arg;
1753 VGE_LOCK(sc);
1754
1755 ifp = sc->vge_ifp;
1756 if ((sc->vge_flags & VGE_FLAG_SUSPENDED) != 0 ||
1757 (ifp->if_flags & IFF_UP) == 0) {
1758 VGE_UNLOCK(sc);
1759 return;
1760 }
1761
1762 #ifdef DEVICE_POLLING
1763 if (ifp->if_capenable & IFCAP_POLLING) {
1764 status = CSR_READ_4(sc, VGE_ISR);
1765 CSR_WRITE_4(sc, VGE_ISR, status);
1766 if (status != 0xFFFFFFFF && (status & VGE_ISR_LINKSTS) != 0)
1767 vge_link_statchg(sc);
1768 VGE_UNLOCK(sc);
1769 return;
1770 }
1771 #endif
1772
1773 /* Disable interrupts */
1774 CSR_WRITE_1(sc, VGE_CRC3, VGE_CR3_INT_GMSK);
1775 status = CSR_READ_4(sc, VGE_ISR);
1776 CSR_WRITE_4(sc, VGE_ISR, status | VGE_ISR_HOLDOFF_RELOAD);
1777 /* If the card has gone away the read returns 0xffff. */
1778 if (status == 0xFFFFFFFF || (status & VGE_INTRS) == 0)
1779 goto done;
1780 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) {
1781 if (status & (VGE_ISR_RXOK|VGE_ISR_RXOK_HIPRIO))
1782 vge_rxeof(sc, VGE_RX_DESC_CNT);
1783 if (status & (VGE_ISR_RXOFLOW|VGE_ISR_RXNODESC)) {
1784 vge_rxeof(sc, VGE_RX_DESC_CNT);
1785 CSR_WRITE_1(sc, VGE_RXQCSRS, VGE_RXQCSR_RUN);
1786 CSR_WRITE_1(sc, VGE_RXQCSRS, VGE_RXQCSR_WAK);
1787 }
1788
1789 if (status & (VGE_ISR_TXOK0|VGE_ISR_TXOK_HIPRIO))
1790 vge_txeof(sc);
1791
1792 if (status & (VGE_ISR_TXDMA_STALL|VGE_ISR_RXDMA_STALL)) {
1793 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
1794 vge_init_locked(sc);
1795 }
1796
1797 if (status & VGE_ISR_LINKSTS)
1798 vge_link_statchg(sc);
1799 }
1800 done:
1801 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) {
1802 /* Re-enable interrupts */
1803 CSR_WRITE_1(sc, VGE_CRS3, VGE_CR3_INT_GMSK);
1804
1805 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
1806 vge_start_locked(ifp);
1807 }
1808 VGE_UNLOCK(sc);
1809 }
1810
1811 static int
vge_encap(struct vge_softc * sc,struct mbuf ** m_head)1812 vge_encap(struct vge_softc *sc, struct mbuf **m_head)
1813 {
1814 struct vge_txdesc *txd;
1815 struct vge_tx_frag *frag;
1816 struct mbuf *m;
1817 bus_dma_segment_t txsegs[VGE_MAXTXSEGS];
1818 int error, i, nsegs, padlen;
1819 uint32_t cflags;
1820
1821 VGE_LOCK_ASSERT(sc);
1822
1823 M_ASSERTPKTHDR((*m_head));
1824
1825 /* Argh. This chip does not autopad short frames. */
1826 if ((*m_head)->m_pkthdr.len < VGE_MIN_FRAMELEN) {
1827 m = *m_head;
1828 padlen = VGE_MIN_FRAMELEN - m->m_pkthdr.len;
1829 if (M_WRITABLE(m) == 0) {
1830 /* Get a writable copy. */
1831 m = m_dup(*m_head, M_NOWAIT);
1832 m_freem(*m_head);
1833 if (m == NULL) {
1834 *m_head = NULL;
1835 return (ENOBUFS);
1836 }
1837 *m_head = m;
1838 }
1839 if (M_TRAILINGSPACE(m) < padlen) {
1840 m = m_defrag(m, M_NOWAIT);
1841 if (m == NULL) {
1842 m_freem(*m_head);
1843 *m_head = NULL;
1844 return (ENOBUFS);
1845 }
1846 }
1847 /*
1848 * Manually pad short frames, and zero the pad space
1849 * to avoid leaking data.
1850 */
1851 bzero(mtod(m, char *) + m->m_pkthdr.len, padlen);
1852 m->m_pkthdr.len += padlen;
1853 m->m_len = m->m_pkthdr.len;
1854 *m_head = m;
1855 }
1856
1857 txd = &sc->vge_cdata.vge_txdesc[sc->vge_cdata.vge_tx_prodidx];
1858
1859 error = bus_dmamap_load_mbuf_sg(sc->vge_cdata.vge_tx_tag,
1860 txd->tx_dmamap, *m_head, txsegs, &nsegs, 0);
1861 if (error == EFBIG) {
1862 m = m_collapse(*m_head, M_NOWAIT, VGE_MAXTXSEGS);
1863 if (m == NULL) {
1864 m_freem(*m_head);
1865 *m_head = NULL;
1866 return (ENOMEM);
1867 }
1868 *m_head = m;
1869 error = bus_dmamap_load_mbuf_sg(sc->vge_cdata.vge_tx_tag,
1870 txd->tx_dmamap, *m_head, txsegs, &nsegs, 0);
1871 if (error != 0) {
1872 m_freem(*m_head);
1873 *m_head = NULL;
1874 return (error);
1875 }
1876 } else if (error != 0)
1877 return (error);
1878 bus_dmamap_sync(sc->vge_cdata.vge_tx_tag, txd->tx_dmamap,
1879 BUS_DMASYNC_PREWRITE);
1880
1881 m = *m_head;
1882 cflags = 0;
1883
1884 /* Configure checksum offload. */
1885 if ((m->m_pkthdr.csum_flags & CSUM_IP) != 0)
1886 cflags |= VGE_TDCTL_IPCSUM;
1887 if ((m->m_pkthdr.csum_flags & CSUM_TCP) != 0)
1888 cflags |= VGE_TDCTL_TCPCSUM;
1889 if ((m->m_pkthdr.csum_flags & CSUM_UDP) != 0)
1890 cflags |= VGE_TDCTL_UDPCSUM;
1891
1892 /* Configure VLAN. */
1893 if ((m->m_flags & M_VLANTAG) != 0)
1894 cflags |= m->m_pkthdr.ether_vtag | VGE_TDCTL_VTAG;
1895 txd->tx_desc->vge_sts = htole32(m->m_pkthdr.len << 16);
1896 /*
1897 * XXX
1898 * Velocity family seems to support TSO but no information
1899 * for MSS configuration is available. Also the number of
1900 * fragments supported by a descriptor is too small to hold
1901 * entire 64KB TCP/IP segment. Maybe VGE_TD_LS_MOF,
1902 * VGE_TD_LS_SOF and VGE_TD_LS_EOF could be used to build
1903 * longer chain of buffers but no additional information is
1904 * available.
1905 *
1906 * When telling the chip how many segments there are, we
1907 * must use nsegs + 1 instead of just nsegs. Darned if I
1908 * know why. This also means we can't use the last fragment
1909 * field of Tx descriptor.
1910 */
1911 txd->tx_desc->vge_ctl = htole32(cflags | ((nsegs + 1) << 28) |
1912 VGE_TD_LS_NORM);
1913 for (i = 0; i < nsegs; i++) {
1914 frag = &txd->tx_desc->vge_frag[i];
1915 frag->vge_addrlo = htole32(VGE_ADDR_LO(txsegs[i].ds_addr));
1916 frag->vge_addrhi = htole32(VGE_ADDR_HI(txsegs[i].ds_addr) |
1917 (VGE_BUFLEN(txsegs[i].ds_len) << 16));
1918 }
1919
1920 sc->vge_cdata.vge_tx_cnt++;
1921 VGE_TX_DESC_INC(sc->vge_cdata.vge_tx_prodidx);
1922
1923 /*
1924 * Finally request interrupt and give the first descriptor
1925 * ownership to hardware.
1926 */
1927 txd->tx_desc->vge_ctl |= htole32(VGE_TDCTL_TIC);
1928 txd->tx_desc->vge_sts |= htole32(VGE_TDSTS_OWN);
1929 txd->tx_m = m;
1930
1931 return (0);
1932 }
1933
1934 /*
1935 * Main transmit routine.
1936 */
1937
1938 static void
vge_start(struct ifnet * ifp)1939 vge_start(struct ifnet *ifp)
1940 {
1941 struct vge_softc *sc;
1942
1943 sc = ifp->if_softc;
1944 VGE_LOCK(sc);
1945 vge_start_locked(ifp);
1946 VGE_UNLOCK(sc);
1947 }
1948
1949
1950 static void
vge_start_locked(struct ifnet * ifp)1951 vge_start_locked(struct ifnet *ifp)
1952 {
1953 struct vge_softc *sc;
1954 struct vge_txdesc *txd;
1955 struct mbuf *m_head;
1956 int enq, idx;
1957
1958 sc = ifp->if_softc;
1959
1960 VGE_LOCK_ASSERT(sc);
1961
1962 if ((sc->vge_flags & VGE_FLAG_LINK) == 0 ||
1963 (ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) !=
1964 IFF_DRV_RUNNING)
1965 return;
1966
1967 idx = sc->vge_cdata.vge_tx_prodidx;
1968 VGE_TX_DESC_DEC(idx);
1969 for (enq = 0; !IFQ_DRV_IS_EMPTY(&ifp->if_snd) &&
1970 sc->vge_cdata.vge_tx_cnt < VGE_TX_DESC_CNT - 1; ) {
1971 IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head);
1972 if (m_head == NULL)
1973 break;
1974 /*
1975 * Pack the data into the transmit ring. If we
1976 * don't have room, set the OACTIVE flag and wait
1977 * for the NIC to drain the ring.
1978 */
1979 if (vge_encap(sc, &m_head)) {
1980 if (m_head == NULL)
1981 break;
1982 IFQ_DRV_PREPEND(&ifp->if_snd, m_head);
1983 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1984 break;
1985 }
1986
1987 txd = &sc->vge_cdata.vge_txdesc[idx];
1988 txd->tx_desc->vge_frag[0].vge_addrhi |= htole32(VGE_TXDESC_Q);
1989 VGE_TX_DESC_INC(idx);
1990
1991 enq++;
1992 /*
1993 * If there's a BPF listener, bounce a copy of this frame
1994 * to him.
1995 */
1996 ETHER_BPF_MTAP(ifp, m_head);
1997 }
1998
1999 if (enq > 0) {
2000 bus_dmamap_sync(sc->vge_cdata.vge_tx_ring_tag,
2001 sc->vge_cdata.vge_tx_ring_map,
2002 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
2003 /* Issue a transmit command. */
2004 CSR_WRITE_2(sc, VGE_TXQCSRS, VGE_TXQCSR_WAK0);
2005 /*
2006 * Set a timeout in case the chip goes out to lunch.
2007 */
2008 sc->vge_timer = 5;
2009 }
2010 }
2011
2012 static void
vge_init(void * xsc)2013 vge_init(void *xsc)
2014 {
2015 struct vge_softc *sc = xsc;
2016
2017 VGE_LOCK(sc);
2018 vge_init_locked(sc);
2019 VGE_UNLOCK(sc);
2020 }
2021
2022 static void
vge_init_locked(struct vge_softc * sc)2023 vge_init_locked(struct vge_softc *sc)
2024 {
2025 struct ifnet *ifp = sc->vge_ifp;
2026 int error, i;
2027
2028 VGE_LOCK_ASSERT(sc);
2029
2030 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
2031 return;
2032
2033 /*
2034 * Cancel pending I/O and free all RX/TX buffers.
2035 */
2036 vge_stop(sc);
2037 vge_reset(sc);
2038 vge_miipoll_start(sc);
2039
2040 /*
2041 * Initialize the RX and TX descriptors and mbufs.
2042 */
2043
2044 error = vge_rx_list_init(sc);
2045 if (error != 0) {
2046 device_printf(sc->vge_dev, "no memory for Rx buffers.\n");
2047 return;
2048 }
2049 vge_tx_list_init(sc);
2050 /* Clear MAC statistics. */
2051 vge_stats_clear(sc);
2052 /* Set our station address */
2053 for (i = 0; i < ETHER_ADDR_LEN; i++)
2054 CSR_WRITE_1(sc, VGE_PAR0 + i, IF_LLADDR(sc->vge_ifp)[i]);
2055
2056 /*
2057 * Set receive FIFO threshold. Also allow transmission and
2058 * reception of VLAN tagged frames.
2059 */
2060 CSR_CLRBIT_1(sc, VGE_RXCFG, VGE_RXCFG_FIFO_THR|VGE_RXCFG_VTAGOPT);
2061 CSR_SETBIT_1(sc, VGE_RXCFG, VGE_RXFIFOTHR_128BYTES);
2062
2063 /* Set DMA burst length */
2064 CSR_CLRBIT_1(sc, VGE_DMACFG0, VGE_DMACFG0_BURSTLEN);
2065 CSR_SETBIT_1(sc, VGE_DMACFG0, VGE_DMABURST_128);
2066
2067 CSR_SETBIT_1(sc, VGE_TXCFG, VGE_TXCFG_ARB_PRIO|VGE_TXCFG_NONBLK);
2068
2069 /* Set collision backoff algorithm */
2070 CSR_CLRBIT_1(sc, VGE_CHIPCFG1, VGE_CHIPCFG1_CRANDOM|
2071 VGE_CHIPCFG1_CAP|VGE_CHIPCFG1_MBA|VGE_CHIPCFG1_BAKOPT);
2072 CSR_SETBIT_1(sc, VGE_CHIPCFG1, VGE_CHIPCFG1_OFSET);
2073
2074 /* Disable LPSEL field in priority resolution */
2075 CSR_SETBIT_1(sc, VGE_DIAGCTL, VGE_DIAGCTL_LPSEL_DIS);
2076
2077 /*
2078 * Load the addresses of the DMA queues into the chip.
2079 * Note that we only use one transmit queue.
2080 */
2081
2082 CSR_WRITE_4(sc, VGE_TXDESC_HIADDR,
2083 VGE_ADDR_HI(sc->vge_rdata.vge_tx_ring_paddr));
2084 CSR_WRITE_4(sc, VGE_TXDESC_ADDR_LO0,
2085 VGE_ADDR_LO(sc->vge_rdata.vge_tx_ring_paddr));
2086 CSR_WRITE_2(sc, VGE_TXDESCNUM, VGE_TX_DESC_CNT - 1);
2087
2088 CSR_WRITE_4(sc, VGE_RXDESC_ADDR_LO,
2089 VGE_ADDR_LO(sc->vge_rdata.vge_rx_ring_paddr));
2090 CSR_WRITE_2(sc, VGE_RXDESCNUM, VGE_RX_DESC_CNT - 1);
2091 CSR_WRITE_2(sc, VGE_RXDESC_RESIDUECNT, VGE_RX_DESC_CNT);
2092
2093 /* Configure interrupt moderation. */
2094 vge_intr_holdoff(sc);
2095
2096 /* Enable and wake up the RX descriptor queue */
2097 CSR_WRITE_1(sc, VGE_RXQCSRS, VGE_RXQCSR_RUN);
2098 CSR_WRITE_1(sc, VGE_RXQCSRS, VGE_RXQCSR_WAK);
2099
2100 /* Enable the TX descriptor queue */
2101 CSR_WRITE_2(sc, VGE_TXQCSRS, VGE_TXQCSR_RUN0);
2102
2103 /* Init the cam filter. */
2104 vge_cam_clear(sc);
2105
2106 /* Set up receiver filter. */
2107 vge_rxfilter(sc);
2108 vge_setvlan(sc);
2109
2110 /* Initialize pause timer. */
2111 CSR_WRITE_2(sc, VGE_TX_PAUSE_TIMER, 0xFFFF);
2112 /*
2113 * Initialize flow control parameters.
2114 * TX XON high threshold : 48
2115 * TX pause low threshold : 24
2116 * Disable hald-duplex flow control
2117 */
2118 CSR_WRITE_1(sc, VGE_CRC2, 0xFF);
2119 CSR_WRITE_1(sc, VGE_CRS2, VGE_CR2_XON_ENABLE | 0x0B);
2120
2121 /* Enable jumbo frame reception (if desired) */
2122
2123 /* Start the MAC. */
2124 CSR_WRITE_1(sc, VGE_CRC0, VGE_CR0_STOP);
2125 CSR_WRITE_1(sc, VGE_CRS1, VGE_CR1_NOPOLL);
2126 CSR_WRITE_1(sc, VGE_CRS0,
2127 VGE_CR0_TX_ENABLE|VGE_CR0_RX_ENABLE|VGE_CR0_START);
2128
2129 #ifdef DEVICE_POLLING
2130 /*
2131 * Disable interrupts except link state change if we are polling.
2132 */
2133 if (ifp->if_capenable & IFCAP_POLLING) {
2134 CSR_WRITE_4(sc, VGE_IMR, VGE_INTRS_POLLING);
2135 } else /* otherwise ... */
2136 #endif
2137 {
2138 /*
2139 * Enable interrupts.
2140 */
2141 CSR_WRITE_4(sc, VGE_IMR, VGE_INTRS);
2142 }
2143 CSR_WRITE_4(sc, VGE_ISR, 0xFFFFFFFF);
2144 CSR_WRITE_1(sc, VGE_CRS3, VGE_CR3_INT_GMSK);
2145
2146 sc->vge_flags &= ~VGE_FLAG_LINK;
2147 vge_ifmedia_upd_locked(sc);
2148
2149 ifp->if_drv_flags |= IFF_DRV_RUNNING;
2150 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
2151 callout_reset(&sc->vge_watchdog, hz, vge_watchdog, sc);
2152 }
2153
2154 /*
2155 * Set media options.
2156 */
2157 static int
vge_ifmedia_upd(struct ifnet * ifp)2158 vge_ifmedia_upd(struct ifnet *ifp)
2159 {
2160 struct vge_softc *sc;
2161 int error;
2162
2163 sc = ifp->if_softc;
2164 VGE_LOCK(sc);
2165 error = vge_ifmedia_upd_locked(sc);
2166 VGE_UNLOCK(sc);
2167
2168 return (error);
2169 }
2170
2171 static int
vge_ifmedia_upd_locked(struct vge_softc * sc)2172 vge_ifmedia_upd_locked(struct vge_softc *sc)
2173 {
2174 struct mii_data *mii;
2175 struct mii_softc *miisc;
2176 int error;
2177
2178 mii = device_get_softc(sc->vge_miibus);
2179 LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
2180 PHY_RESET(miisc);
2181 vge_setmedia(sc);
2182 error = mii_mediachg(mii);
2183
2184 return (error);
2185 }
2186
2187 /*
2188 * Report current media status.
2189 */
2190 static void
vge_ifmedia_sts(struct ifnet * ifp,struct ifmediareq * ifmr)2191 vge_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
2192 {
2193 struct vge_softc *sc;
2194 struct mii_data *mii;
2195
2196 sc = ifp->if_softc;
2197 mii = device_get_softc(sc->vge_miibus);
2198
2199 VGE_LOCK(sc);
2200 if ((ifp->if_flags & IFF_UP) == 0) {
2201 VGE_UNLOCK(sc);
2202 return;
2203 }
2204 mii_pollstat(mii);
2205 ifmr->ifm_active = mii->mii_media_active;
2206 ifmr->ifm_status = mii->mii_media_status;
2207 VGE_UNLOCK(sc);
2208 }
2209
2210 static void
vge_setmedia(struct vge_softc * sc)2211 vge_setmedia(struct vge_softc *sc)
2212 {
2213 struct mii_data *mii;
2214 struct ifmedia_entry *ife;
2215
2216 mii = device_get_softc(sc->vge_miibus);
2217 ife = mii->mii_media.ifm_cur;
2218
2219 /*
2220 * If the user manually selects a media mode, we need to turn
2221 * on the forced MAC mode bit in the DIAGCTL register. If the
2222 * user happens to choose a full duplex mode, we also need to
2223 * set the 'force full duplex' bit. This applies only to
2224 * 10Mbps and 100Mbps speeds. In autoselect mode, forced MAC
2225 * mode is disabled, and in 1000baseT mode, full duplex is
2226 * always implied, so we turn on the forced mode bit but leave
2227 * the FDX bit cleared.
2228 */
2229
2230 switch (IFM_SUBTYPE(ife->ifm_media)) {
2231 case IFM_AUTO:
2232 CSR_CLRBIT_1(sc, VGE_DIAGCTL, VGE_DIAGCTL_MACFORCE);
2233 CSR_CLRBIT_1(sc, VGE_DIAGCTL, VGE_DIAGCTL_FDXFORCE);
2234 break;
2235 case IFM_1000_T:
2236 CSR_SETBIT_1(sc, VGE_DIAGCTL, VGE_DIAGCTL_MACFORCE);
2237 CSR_CLRBIT_1(sc, VGE_DIAGCTL, VGE_DIAGCTL_FDXFORCE);
2238 break;
2239 case IFM_100_TX:
2240 case IFM_10_T:
2241 CSR_SETBIT_1(sc, VGE_DIAGCTL, VGE_DIAGCTL_MACFORCE);
2242 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) {
2243 CSR_SETBIT_1(sc, VGE_DIAGCTL, VGE_DIAGCTL_FDXFORCE);
2244 } else {
2245 CSR_CLRBIT_1(sc, VGE_DIAGCTL, VGE_DIAGCTL_FDXFORCE);
2246 }
2247 break;
2248 default:
2249 device_printf(sc->vge_dev, "unknown media type: %x\n",
2250 IFM_SUBTYPE(ife->ifm_media));
2251 break;
2252 }
2253 }
2254
2255 static int
vge_ioctl(struct ifnet * ifp,u_long command,caddr_t data)2256 vge_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
2257 {
2258 struct vge_softc *sc = ifp->if_softc;
2259 struct ifreq *ifr = (struct ifreq *) data;
2260 struct mii_data *mii;
2261 int error = 0, mask;
2262
2263 switch (command) {
2264 case SIOCSIFMTU:
2265 VGE_LOCK(sc);
2266 if (ifr->ifr_mtu < ETHERMIN || ifr->ifr_mtu > VGE_JUMBO_MTU)
2267 error = EINVAL;
2268 else if (ifp->if_mtu != ifr->ifr_mtu) {
2269 if (ifr->ifr_mtu > ETHERMTU &&
2270 (sc->vge_flags & VGE_FLAG_JUMBO) == 0)
2271 error = EINVAL;
2272 else
2273 ifp->if_mtu = ifr->ifr_mtu;
2274 }
2275 VGE_UNLOCK(sc);
2276 break;
2277 case SIOCSIFFLAGS:
2278 VGE_LOCK(sc);
2279 if ((ifp->if_flags & IFF_UP) != 0) {
2280 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0 &&
2281 ((ifp->if_flags ^ sc->vge_if_flags) &
2282 (IFF_PROMISC | IFF_ALLMULTI)) != 0)
2283 vge_rxfilter(sc);
2284 else
2285 vge_init_locked(sc);
2286 } else if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
2287 vge_stop(sc);
2288 sc->vge_if_flags = ifp->if_flags;
2289 VGE_UNLOCK(sc);
2290 break;
2291 case SIOCADDMULTI:
2292 case SIOCDELMULTI:
2293 VGE_LOCK(sc);
2294 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
2295 vge_rxfilter(sc);
2296 VGE_UNLOCK(sc);
2297 break;
2298 case SIOCGIFMEDIA:
2299 case SIOCSIFMEDIA:
2300 mii = device_get_softc(sc->vge_miibus);
2301 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command);
2302 break;
2303 case SIOCSIFCAP:
2304 mask = ifr->ifr_reqcap ^ ifp->if_capenable;
2305 #ifdef DEVICE_POLLING
2306 if (mask & IFCAP_POLLING) {
2307 if (ifr->ifr_reqcap & IFCAP_POLLING) {
2308 error = ether_poll_register(vge_poll, ifp);
2309 if (error)
2310 return (error);
2311 VGE_LOCK(sc);
2312 /* Disable interrupts */
2313 CSR_WRITE_4(sc, VGE_IMR, VGE_INTRS_POLLING);
2314 CSR_WRITE_4(sc, VGE_ISR, 0xFFFFFFFF);
2315 CSR_WRITE_1(sc, VGE_CRS3, VGE_CR3_INT_GMSK);
2316 ifp->if_capenable |= IFCAP_POLLING;
2317 VGE_UNLOCK(sc);
2318 } else {
2319 error = ether_poll_deregister(ifp);
2320 /* Enable interrupts. */
2321 VGE_LOCK(sc);
2322 CSR_WRITE_4(sc, VGE_IMR, VGE_INTRS);
2323 CSR_WRITE_4(sc, VGE_ISR, 0xFFFFFFFF);
2324 CSR_WRITE_1(sc, VGE_CRS3, VGE_CR3_INT_GMSK);
2325 ifp->if_capenable &= ~IFCAP_POLLING;
2326 VGE_UNLOCK(sc);
2327 }
2328 }
2329 #endif /* DEVICE_POLLING */
2330 VGE_LOCK(sc);
2331 if ((mask & IFCAP_TXCSUM) != 0 &&
2332 (ifp->if_capabilities & IFCAP_TXCSUM) != 0) {
2333 ifp->if_capenable ^= IFCAP_TXCSUM;
2334 if ((ifp->if_capenable & IFCAP_TXCSUM) != 0)
2335 ifp->if_hwassist |= VGE_CSUM_FEATURES;
2336 else
2337 ifp->if_hwassist &= ~VGE_CSUM_FEATURES;
2338 }
2339 if ((mask & IFCAP_RXCSUM) != 0 &&
2340 (ifp->if_capabilities & IFCAP_RXCSUM) != 0)
2341 ifp->if_capenable ^= IFCAP_RXCSUM;
2342 if ((mask & IFCAP_WOL_UCAST) != 0 &&
2343 (ifp->if_capabilities & IFCAP_WOL_UCAST) != 0)
2344 ifp->if_capenable ^= IFCAP_WOL_UCAST;
2345 if ((mask & IFCAP_WOL_MCAST) != 0 &&
2346 (ifp->if_capabilities & IFCAP_WOL_MCAST) != 0)
2347 ifp->if_capenable ^= IFCAP_WOL_MCAST;
2348 if ((mask & IFCAP_WOL_MAGIC) != 0 &&
2349 (ifp->if_capabilities & IFCAP_WOL_MAGIC) != 0)
2350 ifp->if_capenable ^= IFCAP_WOL_MAGIC;
2351 if ((mask & IFCAP_VLAN_HWCSUM) != 0 &&
2352 (ifp->if_capabilities & IFCAP_VLAN_HWCSUM) != 0)
2353 ifp->if_capenable ^= IFCAP_VLAN_HWCSUM;
2354 if ((mask & IFCAP_VLAN_HWTAGGING) != 0 &&
2355 (IFCAP_VLAN_HWTAGGING & ifp->if_capabilities) != 0) {
2356 ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING;
2357 vge_setvlan(sc);
2358 }
2359 VGE_UNLOCK(sc);
2360 VLAN_CAPABILITIES(ifp);
2361 break;
2362 default:
2363 error = ether_ioctl(ifp, command, data);
2364 break;
2365 }
2366
2367 return (error);
2368 }
2369
2370 static void
vge_watchdog(void * arg)2371 vge_watchdog(void *arg)
2372 {
2373 struct vge_softc *sc;
2374 struct ifnet *ifp;
2375
2376 sc = arg;
2377 VGE_LOCK_ASSERT(sc);
2378 vge_stats_update(sc);
2379 callout_reset(&sc->vge_watchdog, hz, vge_watchdog, sc);
2380 if (sc->vge_timer == 0 || --sc->vge_timer > 0)
2381 return;
2382
2383 ifp = sc->vge_ifp;
2384 if_printf(ifp, "watchdog timeout\n");
2385 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
2386
2387 vge_txeof(sc);
2388 vge_rxeof(sc, VGE_RX_DESC_CNT);
2389
2390 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
2391 vge_init_locked(sc);
2392 }
2393
2394 /*
2395 * Stop the adapter and free any mbufs allocated to the
2396 * RX and TX lists.
2397 */
2398 static void
vge_stop(struct vge_softc * sc)2399 vge_stop(struct vge_softc *sc)
2400 {
2401 struct ifnet *ifp;
2402
2403 VGE_LOCK_ASSERT(sc);
2404 ifp = sc->vge_ifp;
2405 sc->vge_timer = 0;
2406 callout_stop(&sc->vge_watchdog);
2407
2408 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
2409
2410 CSR_WRITE_1(sc, VGE_CRC3, VGE_CR3_INT_GMSK);
2411 CSR_WRITE_1(sc, VGE_CRS0, VGE_CR0_STOP);
2412 CSR_WRITE_4(sc, VGE_ISR, 0xFFFFFFFF);
2413 CSR_WRITE_2(sc, VGE_TXQCSRC, 0xFFFF);
2414 CSR_WRITE_1(sc, VGE_RXQCSRC, 0xFF);
2415 CSR_WRITE_4(sc, VGE_RXDESC_ADDR_LO, 0);
2416
2417 vge_stats_update(sc);
2418 VGE_CHAIN_RESET(sc);
2419 vge_txeof(sc);
2420 vge_freebufs(sc);
2421 }
2422
2423 /*
2424 * Device suspend routine. Stop the interface and save some PCI
2425 * settings in case the BIOS doesn't restore them properly on
2426 * resume.
2427 */
2428 static int
vge_suspend(device_t dev)2429 vge_suspend(device_t dev)
2430 {
2431 struct vge_softc *sc;
2432
2433 sc = device_get_softc(dev);
2434
2435 VGE_LOCK(sc);
2436 vge_stop(sc);
2437 vge_setwol(sc);
2438 sc->vge_flags |= VGE_FLAG_SUSPENDED;
2439 VGE_UNLOCK(sc);
2440
2441 return (0);
2442 }
2443
2444 /*
2445 * Device resume routine. Restore some PCI settings in case the BIOS
2446 * doesn't, re-enable busmastering, and restart the interface if
2447 * appropriate.
2448 */
2449 static int
vge_resume(device_t dev)2450 vge_resume(device_t dev)
2451 {
2452 struct vge_softc *sc;
2453 struct ifnet *ifp;
2454 uint16_t pmstat;
2455
2456 sc = device_get_softc(dev);
2457 VGE_LOCK(sc);
2458 if ((sc->vge_flags & VGE_FLAG_PMCAP) != 0) {
2459 /* Disable PME and clear PME status. */
2460 pmstat = pci_read_config(sc->vge_dev,
2461 sc->vge_pmcap + PCIR_POWER_STATUS, 2);
2462 if ((pmstat & PCIM_PSTAT_PMEENABLE) != 0) {
2463 pmstat &= ~PCIM_PSTAT_PMEENABLE;
2464 pci_write_config(sc->vge_dev,
2465 sc->vge_pmcap + PCIR_POWER_STATUS, pmstat, 2);
2466 }
2467 }
2468 vge_clrwol(sc);
2469 /* Restart MII auto-polling. */
2470 vge_miipoll_start(sc);
2471 ifp = sc->vge_ifp;
2472 /* Reinitialize interface if necessary. */
2473 if ((ifp->if_flags & IFF_UP) != 0) {
2474 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
2475 vge_init_locked(sc);
2476 }
2477 sc->vge_flags &= ~VGE_FLAG_SUSPENDED;
2478 VGE_UNLOCK(sc);
2479
2480 return (0);
2481 }
2482
2483 /*
2484 * Stop all chip I/O so that the kernel's probe routines don't
2485 * get confused by errant DMAs when rebooting.
2486 */
2487 static int
vge_shutdown(device_t dev)2488 vge_shutdown(device_t dev)
2489 {
2490
2491 return (vge_suspend(dev));
2492 }
2493
2494 #define VGE_SYSCTL_STAT_ADD32(c, h, n, p, d) \
2495 SYSCTL_ADD_UINT(c, h, OID_AUTO, n, CTLFLAG_RD, p, 0, d)
2496
2497 static void
vge_sysctl_node(struct vge_softc * sc)2498 vge_sysctl_node(struct vge_softc *sc)
2499 {
2500 struct sysctl_ctx_list *ctx;
2501 struct sysctl_oid_list *child, *parent;
2502 struct sysctl_oid *tree;
2503 struct vge_hw_stats *stats;
2504
2505 stats = &sc->vge_stats;
2506 ctx = device_get_sysctl_ctx(sc->vge_dev);
2507 child = SYSCTL_CHILDREN(device_get_sysctl_tree(sc->vge_dev));
2508
2509 SYSCTL_ADD_INT(ctx, child, OID_AUTO, "int_holdoff",
2510 CTLFLAG_RW, &sc->vge_int_holdoff, 0, "interrupt holdoff");
2511 SYSCTL_ADD_INT(ctx, child, OID_AUTO, "rx_coal_pkt",
2512 CTLFLAG_RW, &sc->vge_rx_coal_pkt, 0, "rx coalescing packet");
2513 SYSCTL_ADD_INT(ctx, child, OID_AUTO, "tx_coal_pkt",
2514 CTLFLAG_RW, &sc->vge_tx_coal_pkt, 0, "tx coalescing packet");
2515
2516 /* Pull in device tunables. */
2517 sc->vge_int_holdoff = VGE_INT_HOLDOFF_DEFAULT;
2518 resource_int_value(device_get_name(sc->vge_dev),
2519 device_get_unit(sc->vge_dev), "int_holdoff", &sc->vge_int_holdoff);
2520 sc->vge_rx_coal_pkt = VGE_RX_COAL_PKT_DEFAULT;
2521 resource_int_value(device_get_name(sc->vge_dev),
2522 device_get_unit(sc->vge_dev), "rx_coal_pkt", &sc->vge_rx_coal_pkt);
2523 sc->vge_tx_coal_pkt = VGE_TX_COAL_PKT_DEFAULT;
2524 resource_int_value(device_get_name(sc->vge_dev),
2525 device_get_unit(sc->vge_dev), "tx_coal_pkt", &sc->vge_tx_coal_pkt);
2526
2527 tree = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "stats", CTLFLAG_RD,
2528 NULL, "VGE statistics");
2529 parent = SYSCTL_CHILDREN(tree);
2530
2531 /* Rx statistics. */
2532 tree = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "rx", CTLFLAG_RD,
2533 NULL, "RX MAC statistics");
2534 child = SYSCTL_CHILDREN(tree);
2535 VGE_SYSCTL_STAT_ADD32(ctx, child, "frames",
2536 &stats->rx_frames, "frames");
2537 VGE_SYSCTL_STAT_ADD32(ctx, child, "good_frames",
2538 &stats->rx_good_frames, "Good frames");
2539 VGE_SYSCTL_STAT_ADD32(ctx, child, "fifo_oflows",
2540 &stats->rx_fifo_oflows, "FIFO overflows");
2541 VGE_SYSCTL_STAT_ADD32(ctx, child, "runts",
2542 &stats->rx_runts, "Too short frames");
2543 VGE_SYSCTL_STAT_ADD32(ctx, child, "runts_errs",
2544 &stats->rx_runts_errs, "Too short frames with errors");
2545 VGE_SYSCTL_STAT_ADD32(ctx, child, "frames_64",
2546 &stats->rx_pkts_64, "64 bytes frames");
2547 VGE_SYSCTL_STAT_ADD32(ctx, child, "frames_65_127",
2548 &stats->rx_pkts_65_127, "65 to 127 bytes frames");
2549 VGE_SYSCTL_STAT_ADD32(ctx, child, "frames_128_255",
2550 &stats->rx_pkts_128_255, "128 to 255 bytes frames");
2551 VGE_SYSCTL_STAT_ADD32(ctx, child, "frames_256_511",
2552 &stats->rx_pkts_256_511, "256 to 511 bytes frames");
2553 VGE_SYSCTL_STAT_ADD32(ctx, child, "frames_512_1023",
2554 &stats->rx_pkts_512_1023, "512 to 1023 bytes frames");
2555 VGE_SYSCTL_STAT_ADD32(ctx, child, "frames_1024_1518",
2556 &stats->rx_pkts_1024_1518, "1024 to 1518 bytes frames");
2557 VGE_SYSCTL_STAT_ADD32(ctx, child, "frames_1519_max",
2558 &stats->rx_pkts_1519_max, "1519 to max frames");
2559 VGE_SYSCTL_STAT_ADD32(ctx, child, "frames_1519_max_errs",
2560 &stats->rx_pkts_1519_max_errs, "1519 to max frames with error");
2561 VGE_SYSCTL_STAT_ADD32(ctx, child, "frames_jumbo",
2562 &stats->rx_jumbos, "Jumbo frames");
2563 VGE_SYSCTL_STAT_ADD32(ctx, child, "crcerrs",
2564 &stats->rx_crcerrs, "CRC errors");
2565 VGE_SYSCTL_STAT_ADD32(ctx, child, "pause_frames",
2566 &stats->rx_pause_frames, "CRC errors");
2567 VGE_SYSCTL_STAT_ADD32(ctx, child, "align_errs",
2568 &stats->rx_alignerrs, "Alignment errors");
2569 VGE_SYSCTL_STAT_ADD32(ctx, child, "nobufs",
2570 &stats->rx_nobufs, "Frames with no buffer event");
2571 VGE_SYSCTL_STAT_ADD32(ctx, child, "sym_errs",
2572 &stats->rx_symerrs, "Frames with symbol errors");
2573 VGE_SYSCTL_STAT_ADD32(ctx, child, "len_errs",
2574 &stats->rx_lenerrs, "Frames with length mismatched");
2575
2576 /* Tx statistics. */
2577 tree = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "tx", CTLFLAG_RD,
2578 NULL, "TX MAC statistics");
2579 child = SYSCTL_CHILDREN(tree);
2580 VGE_SYSCTL_STAT_ADD32(ctx, child, "good_frames",
2581 &stats->tx_good_frames, "Good frames");
2582 VGE_SYSCTL_STAT_ADD32(ctx, child, "frames_64",
2583 &stats->tx_pkts_64, "64 bytes frames");
2584 VGE_SYSCTL_STAT_ADD32(ctx, child, "frames_65_127",
2585 &stats->tx_pkts_65_127, "65 to 127 bytes frames");
2586 VGE_SYSCTL_STAT_ADD32(ctx, child, "frames_128_255",
2587 &stats->tx_pkts_128_255, "128 to 255 bytes frames");
2588 VGE_SYSCTL_STAT_ADD32(ctx, child, "frames_256_511",
2589 &stats->tx_pkts_256_511, "256 to 511 bytes frames");
2590 VGE_SYSCTL_STAT_ADD32(ctx, child, "frames_512_1023",
2591 &stats->tx_pkts_512_1023, "512 to 1023 bytes frames");
2592 VGE_SYSCTL_STAT_ADD32(ctx, child, "frames_1024_1518",
2593 &stats->tx_pkts_1024_1518, "1024 to 1518 bytes frames");
2594 VGE_SYSCTL_STAT_ADD32(ctx, child, "frames_jumbo",
2595 &stats->tx_jumbos, "Jumbo frames");
2596 VGE_SYSCTL_STAT_ADD32(ctx, child, "colls",
2597 &stats->tx_colls, "Collisions");
2598 VGE_SYSCTL_STAT_ADD32(ctx, child, "late_colls",
2599 &stats->tx_latecolls, "Late collisions");
2600 VGE_SYSCTL_STAT_ADD32(ctx, child, "pause_frames",
2601 &stats->tx_pause, "Pause frames");
2602 #ifdef VGE_ENABLE_SQEERR
2603 VGE_SYSCTL_STAT_ADD32(ctx, child, "sqeerrs",
2604 &stats->tx_sqeerrs, "SQE errors");
2605 #endif
2606 /* Clear MAC statistics. */
2607 vge_stats_clear(sc);
2608 }
2609
2610 #undef VGE_SYSCTL_STAT_ADD32
2611
2612 static void
vge_stats_clear(struct vge_softc * sc)2613 vge_stats_clear(struct vge_softc *sc)
2614 {
2615 int i;
2616
2617 CSR_WRITE_1(sc, VGE_MIBCSR,
2618 CSR_READ_1(sc, VGE_MIBCSR) | VGE_MIBCSR_FREEZE);
2619 CSR_WRITE_1(sc, VGE_MIBCSR,
2620 CSR_READ_1(sc, VGE_MIBCSR) | VGE_MIBCSR_CLR);
2621 for (i = VGE_TIMEOUT; i > 0; i--) {
2622 DELAY(1);
2623 if ((CSR_READ_1(sc, VGE_MIBCSR) & VGE_MIBCSR_CLR) == 0)
2624 break;
2625 }
2626 if (i == 0)
2627 device_printf(sc->vge_dev, "MIB clear timed out!\n");
2628 CSR_WRITE_1(sc, VGE_MIBCSR, CSR_READ_1(sc, VGE_MIBCSR) &
2629 ~VGE_MIBCSR_FREEZE);
2630 }
2631
2632 static void
vge_stats_update(struct vge_softc * sc)2633 vge_stats_update(struct vge_softc *sc)
2634 {
2635 struct vge_hw_stats *stats;
2636 struct ifnet *ifp;
2637 uint32_t mib[VGE_MIB_CNT], val;
2638 int i;
2639
2640 VGE_LOCK_ASSERT(sc);
2641
2642 stats = &sc->vge_stats;
2643 ifp = sc->vge_ifp;
2644
2645 CSR_WRITE_1(sc, VGE_MIBCSR,
2646 CSR_READ_1(sc, VGE_MIBCSR) | VGE_MIBCSR_FLUSH);
2647 for (i = VGE_TIMEOUT; i > 0; i--) {
2648 DELAY(1);
2649 if ((CSR_READ_1(sc, VGE_MIBCSR) & VGE_MIBCSR_FLUSH) == 0)
2650 break;
2651 }
2652 if (i == 0) {
2653 device_printf(sc->vge_dev, "MIB counter dump timed out!\n");
2654 vge_stats_clear(sc);
2655 return;
2656 }
2657
2658 bzero(mib, sizeof(mib));
2659 reset_idx:
2660 /* Set MIB read index to 0. */
2661 CSR_WRITE_1(sc, VGE_MIBCSR,
2662 CSR_READ_1(sc, VGE_MIBCSR) | VGE_MIBCSR_RINI);
2663 for (i = 0; i < VGE_MIB_CNT; i++) {
2664 val = CSR_READ_4(sc, VGE_MIBDATA);
2665 if (i != VGE_MIB_DATA_IDX(val)) {
2666 /* Reading interrupted. */
2667 goto reset_idx;
2668 }
2669 mib[i] = val & VGE_MIB_DATA_MASK;
2670 }
2671
2672 /* Rx stats. */
2673 stats->rx_frames += mib[VGE_MIB_RX_FRAMES];
2674 stats->rx_good_frames += mib[VGE_MIB_RX_GOOD_FRAMES];
2675 stats->rx_fifo_oflows += mib[VGE_MIB_RX_FIFO_OVERRUNS];
2676 stats->rx_runts += mib[VGE_MIB_RX_RUNTS];
2677 stats->rx_runts_errs += mib[VGE_MIB_RX_RUNTS_ERRS];
2678 stats->rx_pkts_64 += mib[VGE_MIB_RX_PKTS_64];
2679 stats->rx_pkts_65_127 += mib[VGE_MIB_RX_PKTS_65_127];
2680 stats->rx_pkts_128_255 += mib[VGE_MIB_RX_PKTS_128_255];
2681 stats->rx_pkts_256_511 += mib[VGE_MIB_RX_PKTS_256_511];
2682 stats->rx_pkts_512_1023 += mib[VGE_MIB_RX_PKTS_512_1023];
2683 stats->rx_pkts_1024_1518 += mib[VGE_MIB_RX_PKTS_1024_1518];
2684 stats->rx_pkts_1519_max += mib[VGE_MIB_RX_PKTS_1519_MAX];
2685 stats->rx_pkts_1519_max_errs += mib[VGE_MIB_RX_PKTS_1519_MAX_ERRS];
2686 stats->rx_jumbos += mib[VGE_MIB_RX_JUMBOS];
2687 stats->rx_crcerrs += mib[VGE_MIB_RX_CRCERRS];
2688 stats->rx_pause_frames += mib[VGE_MIB_RX_PAUSE];
2689 stats->rx_alignerrs += mib[VGE_MIB_RX_ALIGNERRS];
2690 stats->rx_nobufs += mib[VGE_MIB_RX_NOBUFS];
2691 stats->rx_symerrs += mib[VGE_MIB_RX_SYMERRS];
2692 stats->rx_lenerrs += mib[VGE_MIB_RX_LENERRS];
2693
2694 /* Tx stats. */
2695 stats->tx_good_frames += mib[VGE_MIB_TX_GOOD_FRAMES];
2696 stats->tx_pkts_64 += mib[VGE_MIB_TX_PKTS_64];
2697 stats->tx_pkts_65_127 += mib[VGE_MIB_TX_PKTS_65_127];
2698 stats->tx_pkts_128_255 += mib[VGE_MIB_TX_PKTS_128_255];
2699 stats->tx_pkts_256_511 += mib[VGE_MIB_TX_PKTS_256_511];
2700 stats->tx_pkts_512_1023 += mib[VGE_MIB_TX_PKTS_512_1023];
2701 stats->tx_pkts_1024_1518 += mib[VGE_MIB_TX_PKTS_1024_1518];
2702 stats->tx_jumbos += mib[VGE_MIB_TX_JUMBOS];
2703 stats->tx_colls += mib[VGE_MIB_TX_COLLS];
2704 stats->tx_pause += mib[VGE_MIB_TX_PAUSE];
2705 #ifdef VGE_ENABLE_SQEERR
2706 stats->tx_sqeerrs += mib[VGE_MIB_TX_SQEERRS];
2707 #endif
2708 stats->tx_latecolls += mib[VGE_MIB_TX_LATECOLLS];
2709
2710 /* Update counters in ifnet. */
2711 if_inc_counter(ifp, IFCOUNTER_OPACKETS, mib[VGE_MIB_TX_GOOD_FRAMES]);
2712
2713 if_inc_counter(ifp, IFCOUNTER_COLLISIONS,
2714 mib[VGE_MIB_TX_COLLS] + mib[VGE_MIB_TX_LATECOLLS]);
2715
2716 if_inc_counter(ifp, IFCOUNTER_OERRORS,
2717 mib[VGE_MIB_TX_COLLS] + mib[VGE_MIB_TX_LATECOLLS]);
2718
2719 if_inc_counter(ifp, IFCOUNTER_IPACKETS, mib[VGE_MIB_RX_GOOD_FRAMES]);
2720
2721 if_inc_counter(ifp, IFCOUNTER_IERRORS,
2722 mib[VGE_MIB_RX_FIFO_OVERRUNS] +
2723 mib[VGE_MIB_RX_RUNTS] +
2724 mib[VGE_MIB_RX_RUNTS_ERRS] +
2725 mib[VGE_MIB_RX_CRCERRS] +
2726 mib[VGE_MIB_RX_ALIGNERRS] +
2727 mib[VGE_MIB_RX_NOBUFS] +
2728 mib[VGE_MIB_RX_SYMERRS] +
2729 mib[VGE_MIB_RX_LENERRS]);
2730 }
2731
2732 static void
vge_intr_holdoff(struct vge_softc * sc)2733 vge_intr_holdoff(struct vge_softc *sc)
2734 {
2735 uint8_t intctl;
2736
2737 VGE_LOCK_ASSERT(sc);
2738
2739 /*
2740 * Set Tx interrupt supression threshold.
2741 * It's possible to use single-shot timer in VGE_CRS1 register
2742 * in Tx path such that driver can remove most of Tx completion
2743 * interrupts. However this requires additional access to
2744 * VGE_CRS1 register to reload the timer in addintion to
2745 * activating Tx kick command. Another downside is we don't know
2746 * what single-shot timer value should be used in advance so
2747 * reclaiming transmitted mbufs could be delayed a lot which in
2748 * turn slows down Tx operation.
2749 */
2750 CSR_WRITE_1(sc, VGE_CAMCTL, VGE_PAGESEL_TXSUPPTHR);
2751 CSR_WRITE_1(sc, VGE_TXSUPPTHR, sc->vge_tx_coal_pkt);
2752
2753 /* Set Rx interrupt suppresion threshold. */
2754 CSR_WRITE_1(sc, VGE_CAMCTL, VGE_PAGESEL_RXSUPPTHR);
2755 CSR_WRITE_1(sc, VGE_RXSUPPTHR, sc->vge_rx_coal_pkt);
2756
2757 intctl = CSR_READ_1(sc, VGE_INTCTL1);
2758 intctl &= ~VGE_INTCTL_SC_RELOAD;
2759 intctl |= VGE_INTCTL_HC_RELOAD;
2760 if (sc->vge_tx_coal_pkt <= 0)
2761 intctl |= VGE_INTCTL_TXINTSUP_DISABLE;
2762 else
2763 intctl &= ~VGE_INTCTL_TXINTSUP_DISABLE;
2764 if (sc->vge_rx_coal_pkt <= 0)
2765 intctl |= VGE_INTCTL_RXINTSUP_DISABLE;
2766 else
2767 intctl &= ~VGE_INTCTL_RXINTSUP_DISABLE;
2768 CSR_WRITE_1(sc, VGE_INTCTL1, intctl);
2769 CSR_WRITE_1(sc, VGE_CRC3, VGE_CR3_INT_HOLDOFF);
2770 if (sc->vge_int_holdoff > 0) {
2771 /* Set interrupt holdoff timer. */
2772 CSR_WRITE_1(sc, VGE_CAMCTL, VGE_PAGESEL_INTHLDOFF);
2773 CSR_WRITE_1(sc, VGE_INTHOLDOFF,
2774 VGE_INT_HOLDOFF_USEC(sc->vge_int_holdoff));
2775 /* Enable holdoff timer. */
2776 CSR_WRITE_1(sc, VGE_CRS3, VGE_CR3_INT_HOLDOFF);
2777 }
2778 }
2779
2780 static void
vge_setlinkspeed(struct vge_softc * sc)2781 vge_setlinkspeed(struct vge_softc *sc)
2782 {
2783 struct mii_data *mii;
2784 int aneg, i;
2785
2786 VGE_LOCK_ASSERT(sc);
2787
2788 mii = device_get_softc(sc->vge_miibus);
2789 mii_pollstat(mii);
2790 aneg = 0;
2791 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) ==
2792 (IFM_ACTIVE | IFM_AVALID)) {
2793 switch IFM_SUBTYPE(mii->mii_media_active) {
2794 case IFM_10_T:
2795 case IFM_100_TX:
2796 return;
2797 case IFM_1000_T:
2798 aneg++;
2799 default:
2800 break;
2801 }
2802 }
2803 /* Clear forced MAC speed/duplex configuration. */
2804 CSR_CLRBIT_1(sc, VGE_DIAGCTL, VGE_DIAGCTL_MACFORCE);
2805 CSR_CLRBIT_1(sc, VGE_DIAGCTL, VGE_DIAGCTL_FDXFORCE);
2806 vge_miibus_writereg(sc->vge_dev, sc->vge_phyaddr, MII_100T2CR, 0);
2807 vge_miibus_writereg(sc->vge_dev, sc->vge_phyaddr, MII_ANAR,
2808 ANAR_TX_FD | ANAR_TX | ANAR_10_FD | ANAR_10 | ANAR_CSMA);
2809 vge_miibus_writereg(sc->vge_dev, sc->vge_phyaddr, MII_BMCR,
2810 BMCR_AUTOEN | BMCR_STARTNEG);
2811 DELAY(1000);
2812 if (aneg != 0) {
2813 /* Poll link state until vge(4) get a 10/100 link. */
2814 for (i = 0; i < MII_ANEGTICKS_GIGE; i++) {
2815 mii_pollstat(mii);
2816 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID))
2817 == (IFM_ACTIVE | IFM_AVALID)) {
2818 switch (IFM_SUBTYPE(mii->mii_media_active)) {
2819 case IFM_10_T:
2820 case IFM_100_TX:
2821 return;
2822 default:
2823 break;
2824 }
2825 }
2826 VGE_UNLOCK(sc);
2827 pause("vgelnk", hz);
2828 VGE_LOCK(sc);
2829 }
2830 if (i == MII_ANEGTICKS_GIGE)
2831 device_printf(sc->vge_dev, "establishing link failed, "
2832 "WOL may not work!");
2833 }
2834 /*
2835 * No link, force MAC to have 100Mbps, full-duplex link.
2836 * This is the last resort and may/may not work.
2837 */
2838 mii->mii_media_status = IFM_AVALID | IFM_ACTIVE;
2839 mii->mii_media_active = IFM_ETHER | IFM_100_TX | IFM_FDX;
2840 }
2841
2842 static void
vge_setwol(struct vge_softc * sc)2843 vge_setwol(struct vge_softc *sc)
2844 {
2845 struct ifnet *ifp;
2846 uint16_t pmstat;
2847 uint8_t val;
2848
2849 VGE_LOCK_ASSERT(sc);
2850
2851 if ((sc->vge_flags & VGE_FLAG_PMCAP) == 0) {
2852 /* No PME capability, PHY power down. */
2853 vge_miibus_writereg(sc->vge_dev, sc->vge_phyaddr, MII_BMCR,
2854 BMCR_PDOWN);
2855 vge_miipoll_stop(sc);
2856 return;
2857 }
2858
2859 ifp = sc->vge_ifp;
2860
2861 /* Clear WOL on pattern match. */
2862 CSR_WRITE_1(sc, VGE_WOLCR0C, VGE_WOLCR0_PATTERN_ALL);
2863 /* Disable WOL on magic/unicast packet. */
2864 CSR_WRITE_1(sc, VGE_WOLCR1C, 0x0F);
2865 CSR_WRITE_1(sc, VGE_WOLCFGC, VGE_WOLCFG_SAB | VGE_WOLCFG_SAM |
2866 VGE_WOLCFG_PMEOVR);
2867 if ((ifp->if_capenable & IFCAP_WOL) != 0) {
2868 vge_setlinkspeed(sc);
2869 val = 0;
2870 if ((ifp->if_capenable & IFCAP_WOL_UCAST) != 0)
2871 val |= VGE_WOLCR1_UCAST;
2872 if ((ifp->if_capenable & IFCAP_WOL_MAGIC) != 0)
2873 val |= VGE_WOLCR1_MAGIC;
2874 CSR_WRITE_1(sc, VGE_WOLCR1S, val);
2875 val = 0;
2876 if ((ifp->if_capenable & IFCAP_WOL_MCAST) != 0)
2877 val |= VGE_WOLCFG_SAM | VGE_WOLCFG_SAB;
2878 CSR_WRITE_1(sc, VGE_WOLCFGS, val | VGE_WOLCFG_PMEOVR);
2879 /* Disable MII auto-polling. */
2880 vge_miipoll_stop(sc);
2881 }
2882 CSR_SETBIT_1(sc, VGE_DIAGCTL,
2883 VGE_DIAGCTL_MACFORCE | VGE_DIAGCTL_FDXFORCE);
2884 CSR_CLRBIT_1(sc, VGE_DIAGCTL, VGE_DIAGCTL_GMII);
2885
2886 /* Clear WOL status on pattern match. */
2887 CSR_WRITE_1(sc, VGE_WOLSR0C, 0xFF);
2888 CSR_WRITE_1(sc, VGE_WOLSR1C, 0xFF);
2889
2890 val = CSR_READ_1(sc, VGE_PWRSTAT);
2891 val |= VGE_STICKHW_SWPTAG;
2892 CSR_WRITE_1(sc, VGE_PWRSTAT, val);
2893 /* Put hardware into sleep. */
2894 val = CSR_READ_1(sc, VGE_PWRSTAT);
2895 val |= VGE_STICKHW_DS0 | VGE_STICKHW_DS1;
2896 CSR_WRITE_1(sc, VGE_PWRSTAT, val);
2897 /* Request PME if WOL is requested. */
2898 pmstat = pci_read_config(sc->vge_dev, sc->vge_pmcap +
2899 PCIR_POWER_STATUS, 2);
2900 pmstat &= ~(PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE);
2901 if ((ifp->if_capenable & IFCAP_WOL) != 0)
2902 pmstat |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE;
2903 pci_write_config(sc->vge_dev, sc->vge_pmcap + PCIR_POWER_STATUS,
2904 pmstat, 2);
2905 }
2906
2907 static void
vge_clrwol(struct vge_softc * sc)2908 vge_clrwol(struct vge_softc *sc)
2909 {
2910 uint8_t val;
2911
2912 val = CSR_READ_1(sc, VGE_PWRSTAT);
2913 val &= ~VGE_STICKHW_SWPTAG;
2914 CSR_WRITE_1(sc, VGE_PWRSTAT, val);
2915 /* Disable WOL and clear power state indicator. */
2916 val = CSR_READ_1(sc, VGE_PWRSTAT);
2917 val &= ~(VGE_STICKHW_DS0 | VGE_STICKHW_DS1);
2918 CSR_WRITE_1(sc, VGE_PWRSTAT, val);
2919
2920 CSR_CLRBIT_1(sc, VGE_DIAGCTL, VGE_DIAGCTL_GMII);
2921 CSR_CLRBIT_1(sc, VGE_DIAGCTL, VGE_DIAGCTL_MACFORCE);
2922
2923 /* Clear WOL on pattern match. */
2924 CSR_WRITE_1(sc, VGE_WOLCR0C, VGE_WOLCR0_PATTERN_ALL);
2925 /* Disable WOL on magic/unicast packet. */
2926 CSR_WRITE_1(sc, VGE_WOLCR1C, 0x0F);
2927 CSR_WRITE_1(sc, VGE_WOLCFGC, VGE_WOLCFG_SAB | VGE_WOLCFG_SAM |
2928 VGE_WOLCFG_PMEOVR);
2929 /* Clear WOL status on pattern match. */
2930 CSR_WRITE_1(sc, VGE_WOLSR0C, 0xFF);
2931 CSR_WRITE_1(sc, VGE_WOLSR1C, 0xFF);
2932 }
2933