xref: /netbsd-src/sys/dev/pci/if_txp.c (revision 181254a7b1bdde6873432bffef2d2decc4b5c22f)
1 /* $NetBSD: if_txp.c,v 1.73 2020/03/10 01:23:42 thorpej Exp $ */
2 
3 /*
4  * Copyright (c) 2001
5  *	Jason L. Wright <jason@thought.net>, Theo de Raadt, and
6  *	Aaron Campbell <aaron@monkey.org>.  All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR THE VOICES IN THEIR HEADS
21  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
27  * THE POSSIBILITY OF SUCH DAMAGE.
28  */
29 
30 /*
31  * Driver for 3c990 (Typhoon) Ethernet ASIC
32  */
33 
34 #include <sys/cdefs.h>
35 __KERNEL_RCSID(0, "$NetBSD: if_txp.c,v 1.73 2020/03/10 01:23:42 thorpej Exp $");
36 
37 #include "opt_inet.h"
38 
39 #include <sys/param.h>
40 #include <sys/systm.h>
41 #include <sys/sockio.h>
42 #include <sys/mbuf.h>
43 #include <sys/malloc.h>
44 #include <sys/kernel.h>
45 #include <sys/socket.h>
46 #include <sys/device.h>
47 #include <sys/callout.h>
48 #include <sys/bus.h>
49 
50 #include <net/if.h>
51 #include <net/if_dl.h>
52 #include <net/if_types.h>
53 #include <net/if_ether.h>
54 #include <net/if_arp.h>
55 #include <net/if_media.h>
56 #include <net/bpf.h>
57 
58 #ifdef INET
59 #include <netinet/in.h>
60 #include <netinet/in_systm.h>
61 #include <netinet/in_var.h>
62 #include <netinet/ip.h>
63 #include <netinet/if_inarp.h>
64 #endif
65 
66 #include <dev/mii/mii.h>
67 #include <dev/mii/miivar.h>
68 #include <dev/pci/pcireg.h>
69 #include <dev/pci/pcivar.h>
70 #include <dev/pci/pcidevs.h>
71 
72 #include <dev/pci/if_txpreg.h>
73 
74 #include <dev/microcode/typhoon/3c990img.h>
75 
76 /*
77  * These currently break the 3c990 firmware, hopefully will be resolved
78  * at some point.
79  */
80 #undef	TRY_TX_UDP_CSUM
81 #undef	TRY_TX_TCP_CSUM
82 
83 static int txp_probe(device_t, cfdata_t, void *);
84 static void txp_attach(device_t, device_t, void *);
85 static int txp_intr(void *);
86 static void txp_tick(void *);
87 static bool txp_shutdown(device_t, int);
88 static int txp_ioctl(struct ifnet *, u_long, void *);
89 static void txp_start(struct ifnet *);
90 static void txp_stop(struct txp_softc *);
91 static void txp_init(struct txp_softc *);
92 static void txp_watchdog(struct ifnet *);
93 
94 static int txp_chip_init(struct txp_softc *);
95 static int txp_reset_adapter(struct txp_softc *);
96 static int txp_download_fw(struct txp_softc *);
97 static int txp_download_fw_wait(struct txp_softc *);
98 static int txp_download_fw_section(struct txp_softc *,
99     const struct txp_fw_section_header *, int);
100 static int txp_alloc_rings(struct txp_softc *);
101 static void txp_dma_free(struct txp_softc *, struct txp_dma_alloc *);
102 static int txp_dma_malloc(struct txp_softc *, bus_size_t, struct txp_dma_alloc *, int);
103 static void txp_set_filter(struct txp_softc *);
104 
105 static int txp_cmd_desc_numfree(struct txp_softc *);
106 static int txp_command(struct txp_softc *, uint16_t, uint16_t, uint32_t,
107     uint32_t, uint16_t *, uint32_t *, uint32_t *, int);
108 static int txp_command2(struct txp_softc *, uint16_t, uint16_t,
109     uint32_t, uint32_t, struct txp_ext_desc *, uint8_t,
110     struct txp_rsp_desc **, int);
111 static int txp_response(struct txp_softc *, uint32_t, uint16_t, uint16_t,
112     struct txp_rsp_desc **);
113 static void txp_rsp_fixup(struct txp_softc *, struct txp_rsp_desc *,
114     struct txp_rsp_desc *);
115 static void txp_capabilities(struct txp_softc *);
116 
117 static void txp_ifmedia_sts(struct ifnet *, struct ifmediareq *);
118 static int txp_ifmedia_upd(struct ifnet *);
119 static void txp_tx_reclaim(struct txp_softc *, struct txp_tx_ring *,
120     struct txp_dma_alloc *);
121 static void txp_rxbuf_reclaim(struct txp_softc *);
122 static void txp_rx_reclaim(struct txp_softc *, struct txp_rx_ring *,
123     struct txp_dma_alloc *);
124 
125 static void txp_rxd_free(struct txp_softc *, struct txp_swdesc *);
126 static struct txp_swdesc *txp_rxd_alloc(struct txp_softc *);
127 
128 CFATTACH_DECL_NEW(txp, sizeof(struct txp_softc), txp_probe, txp_attach,
129 	      NULL, NULL);
130 
131 static const struct txp_pci_match {
132 	int vid, did, flags;
133 } txp_devices[] = {
134 	{ PCI_VENDOR_3COM, PCI_PRODUCT_3COM_3CR990, 0 },
135 	{ PCI_VENDOR_3COM, PCI_PRODUCT_3COM_3CR990TX95, 0 },
136 	{ PCI_VENDOR_3COM, PCI_PRODUCT_3COM_3CR990TX97, 0 },
137 	{ PCI_VENDOR_3COM, PCI_PRODUCT_3COM_3CR990SVR95, TXP_SERVERVERSION },
138 	{ PCI_VENDOR_3COM, PCI_PRODUCT_3COM_3CR990SVR97, TXP_SERVERVERSION },
139 	{ PCI_VENDOR_3COM, PCI_PRODUCT_3COM_3C990B, TXP_USESUBSYSTEM },
140 	{ PCI_VENDOR_3COM, PCI_PRODUCT_3COM_3C990BSVR, TXP_SERVERVERSION },
141 	{ PCI_VENDOR_3COM, PCI_PRODUCT_3COM_3CR990FX, TXP_USESUBSYSTEM },
142 };
143 
144 static const struct txp_pci_match *txp_pcilookup(pcireg_t);
145 
146 static const struct {
147 	uint16_t mask, value;
148 	int flags;
149 } txp_subsysinfo[] = {
150 	{0xf000, 0x2000, TXP_SERVERVERSION},
151 	{0x0100, 0x0100, TXP_FIBER},
152 #if 0 /* information from 3com header, unused */
153 	{0x0010, 0x0010, /* secured firmware */},
154 	{0x0003, 0x0000, /* variable DES */},
155 	{0x0003, 0x0001, /* single DES - "95" */},
156 	{0x0003, 0x0002, /* triple DES - "97" */},
157 #endif
158 };
159 
160 static const struct txp_pci_match *
161 txp_pcilookup(pcireg_t id)
162 {
163 	int i;
164 
165 	for (i = 0; i < __arraycount(txp_devices); i++)
166 		if (PCI_VENDOR(id) == txp_devices[i].vid &&
167 		    PCI_PRODUCT(id) == txp_devices[i].did)
168 			return &txp_devices[i];
169 	return (0);
170 }
171 
172 static int
173 txp_probe(device_t parent, cfdata_t match, void *aux)
174 {
175 	struct pci_attach_args *pa = aux;
176 
177 	if (txp_pcilookup(pa->pa_id))
178 			return (1);
179 	return (0);
180 }
181 
182 static void
183 txp_attach(device_t parent, device_t self, void *aux)
184 {
185 	struct txp_softc *sc = device_private(self);
186 	struct pci_attach_args *pa = aux;
187 	pci_chipset_tag_t pc = pa->pa_pc;
188 	pci_intr_handle_t ih;
189 	const char *intrstr = NULL;
190 	struct ifnet *ifp = &sc->sc_arpcom.ec_if;
191 	uint32_t command;
192 	uint16_t p1;
193 	uint32_t p2;
194 	u_char enaddr[6];
195 	const struct txp_pci_match *match;
196 	uint16_t subsys;
197 	int i, flags;
198 	char devinfo[256];
199 	char intrbuf[PCI_INTRSTR_LEN];
200 
201 	sc->sc_dev = self;
202 	sc->sc_cold = 1;
203 
204 	match = txp_pcilookup(pa->pa_id);
205 	flags = match->flags;
206 	if (match->flags & TXP_USESUBSYSTEM) {
207 		subsys = PCI_PRODUCT(pci_conf_read(pc, pa->pa_tag,
208 						   PCI_SUBSYS_ID_REG));
209 		for (i = 0;
210 		     i < sizeof(txp_subsysinfo)/sizeof(txp_subsysinfo[0]);
211 		     i++)
212 			if ((subsys & txp_subsysinfo[i].mask) ==
213 			    txp_subsysinfo[i].value)
214 				flags |= txp_subsysinfo[i].flags;
215 	}
216 	sc->sc_flags = flags;
217 
218 	aprint_naive("\n");
219 	pci_devinfo(pa->pa_id, 0, 0, devinfo, sizeof(devinfo));
220 #define TXP_EXTRAINFO ((flags & (TXP_USESUBSYSTEM | TXP_SERVERVERSION)) == \
221   (TXP_USESUBSYSTEM | TXP_SERVERVERSION) ? " (SVR)" : "")
222 	aprint_normal(": %s%s\n%s", devinfo, TXP_EXTRAINFO,
223 	    device_xname(sc->sc_dev));
224 
225 	command = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
226 
227 	if (!(command & PCI_COMMAND_MASTER_ENABLE)) {
228 		aprint_error(": failed to enable bus mastering\n");
229 		return;
230 	}
231 
232 	if (!(command & PCI_COMMAND_MEM_ENABLE)) {
233 		aprint_error(": failed to enable memory mapping\n");
234 		return;
235 	}
236 	if (pci_mapreg_map(pa, TXP_PCI_LOMEM, PCI_MAPREG_TYPE_MEM, 0,
237 	    &sc->sc_bt, &sc->sc_bh, NULL, NULL)) {
238 		aprint_error(": can't map mem space %d\n", 0);
239 		return;
240 	}
241 
242 	if (pci_dma64_available(pa))
243 		sc->sc_dmat = pa->pa_dmat64;
244 	else
245 		sc->sc_dmat = pa->pa_dmat;
246 
247 	/*
248 	 * Allocate our interrupt.
249 	 */
250 	if (pci_intr_map(pa, &ih)) {
251 		aprint_error(": couldn't map interrupt\n");
252 		return;
253 	}
254 
255 	intrstr = pci_intr_string(pc, ih, intrbuf, sizeof(intrbuf));
256 	sc->sc_ih = pci_intr_establish_xname(pc, ih, IPL_NET, txp_intr, sc,
257 	    device_xname(self));
258 	if (sc->sc_ih == NULL) {
259 		aprint_error(": couldn't establish interrupt");
260 		if (intrstr != NULL)
261 			aprint_normal(" at %s", intrstr);
262 		aprint_normal("\n");
263 		return;
264 	}
265 	aprint_normal(": interrupting at %s\n", intrstr);
266 
267 	if (txp_chip_init(sc))
268 		goto cleanupintr;
269 
270 	if (txp_download_fw(sc))
271 		goto cleanupintr;
272 
273 	if (txp_alloc_rings(sc))
274 		goto cleanupintr;
275 
276 	if (txp_command(sc, TXP_CMD_MAX_PKT_SIZE_WRITE, TXP_MAX_PKTLEN, 0, 0,
277 	    NULL, NULL, NULL, 1))
278 		goto cleanupintr;
279 
280 	if (txp_command(sc, TXP_CMD_STATION_ADDRESS_READ, 0, 0, 0,
281 	    &p1, &p2, NULL, 1))
282 		goto cleanupintr;
283 
284 	p1 = htole16(p1);
285 	enaddr[0] = ((uint8_t *)&p1)[1];
286 	enaddr[1] = ((uint8_t *)&p1)[0];
287 	p2 = htole32(p2);
288 	enaddr[2] = ((uint8_t *)&p2)[3];
289 	enaddr[3] = ((uint8_t *)&p2)[2];
290 	enaddr[4] = ((uint8_t *)&p2)[1];
291 	enaddr[5] = ((uint8_t *)&p2)[0];
292 
293 	aprint_normal_dev(self, "Ethernet address %s\n",
294 	    ether_sprintf(enaddr));
295 	sc->sc_cold = 0;
296 
297 	/* Initialize ifmedia structures. */
298 	sc->sc_arpcom.ec_ifmedia = &sc->sc_ifmedia;
299 	ifmedia_init(&sc->sc_ifmedia, 0, txp_ifmedia_upd, txp_ifmedia_sts);
300 	if (flags & TXP_FIBER) {
301 		ifmedia_add(&sc->sc_ifmedia, IFM_ETHER | IFM_100_FX,
302 			    0, NULL);
303 		ifmedia_add(&sc->sc_ifmedia, IFM_ETHER | IFM_100_FX | IFM_FDX,
304 			    0, NULL);
305 	} else {
306 		ifmedia_add(&sc->sc_ifmedia, IFM_ETHER | IFM_10_T,
307 			    0, NULL);
308 		ifmedia_add(&sc->sc_ifmedia, IFM_ETHER | IFM_10_T | IFM_FDX,
309 			    0, NULL);
310 		ifmedia_add(&sc->sc_ifmedia, IFM_ETHER | IFM_100_TX,
311 			    0, NULL);
312 		ifmedia_add(&sc->sc_ifmedia, IFM_ETHER | IFM_100_TX | IFM_FDX,
313 			    0, NULL);
314 	}
315 	ifmedia_add(&sc->sc_ifmedia, IFM_ETHER | IFM_AUTO, 0, NULL);
316 
317 	sc->sc_xcvr = TXP_XCVR_AUTO;
318 	txp_command(sc, TXP_CMD_XCVR_SELECT, TXP_XCVR_AUTO, 0, 0,
319 	    NULL, NULL, NULL, 0);
320 	ifmedia_set(&sc->sc_ifmedia, IFM_ETHER | IFM_AUTO);
321 
322 	ifp->if_softc = sc;
323 	ifp->if_mtu = ETHERMTU;
324 	ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
325 	ifp->if_ioctl = txp_ioctl;
326 	ifp->if_start = txp_start;
327 	ifp->if_watchdog = txp_watchdog;
328 	ifp->if_baudrate = 10000000;
329 	IFQ_SET_MAXLEN(&ifp->if_snd, TX_ENTRIES);
330 	IFQ_SET_READY(&ifp->if_snd);
331 	ifp->if_capabilities = 0;
332 	strlcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ);
333 
334 	txp_capabilities(sc);
335 
336 	callout_init(&sc->sc_tick, 0);
337 	callout_setfunc(&sc->sc_tick, txp_tick, sc);
338 
339 	/*
340 	 * Attach us everywhere
341 	 */
342 	if_attach(ifp);
343 	if_deferred_start_init(ifp, NULL);
344 	ether_ifattach(ifp, enaddr);
345 
346 	/*
347 	 * XXX Because we allocate Rx buffers in txp_alloc_rings(),
348 	 * XXX we have to go back and claim them now that our mowners
349 	 * XXX have been initialized (in ether_ifattach()).
350 	 *
351 	 * XXX FIXME by allocating Rx buffers only when interface is
352 	 * XXX running, like other drivers do.
353 	 */
354 	for (i = 0; i < RXBUF_ENTRIES; i++) {
355 		KASSERT(sc->sc_rxd[i].sd_mbuf != NULL);
356 		MCLAIM(sc->sc_rxd[i].sd_mbuf, &sc->sc_arpcom.ec_rx_mowner);
357 	}
358 
359 	if (pmf_device_register1(self, NULL, NULL, txp_shutdown))
360 		pmf_class_network_register(self, ifp);
361 	else
362 		aprint_error_dev(self, "couldn't establish power handler\n");
363 
364 	return;
365 
366 cleanupintr:
367 	pci_intr_disestablish(pc, sc->sc_ih);
368 
369 	return;
370 
371 }
372 
373 static int
374 txp_chip_init(struct txp_softc *sc)
375 {
376 	/* disable interrupts */
377 	WRITE_REG(sc, TXP_IER, 0);
378 	WRITE_REG(sc, TXP_IMR,
379 	    TXP_INT_SELF | TXP_INT_PCI_TABORT | TXP_INT_PCI_MABORT |
380 	    TXP_INT_DMA3 | TXP_INT_DMA2 | TXP_INT_DMA1 | TXP_INT_DMA0 |
381 	    TXP_INT_LATCH);
382 
383 	/* ack all interrupts */
384 	WRITE_REG(sc, TXP_ISR, TXP_INT_RESERVED | TXP_INT_LATCH |
385 	    TXP_INT_A2H_7 | TXP_INT_A2H_6 | TXP_INT_A2H_5 | TXP_INT_A2H_4 |
386 	    TXP_INT_SELF | TXP_INT_PCI_TABORT | TXP_INT_PCI_MABORT |
387 	    TXP_INT_DMA3 | TXP_INT_DMA2 | TXP_INT_DMA1 | TXP_INT_DMA0 |
388 	    TXP_INT_A2H_3 | TXP_INT_A2H_2 | TXP_INT_A2H_1 | TXP_INT_A2H_0);
389 
390 	if (txp_reset_adapter(sc))
391 		return (-1);
392 
393 	/* disable interrupts */
394 	WRITE_REG(sc, TXP_IER, 0);
395 	WRITE_REG(sc, TXP_IMR,
396 	    TXP_INT_SELF | TXP_INT_PCI_TABORT | TXP_INT_PCI_MABORT |
397 	    TXP_INT_DMA3 | TXP_INT_DMA2 | TXP_INT_DMA1 | TXP_INT_DMA0 |
398 	    TXP_INT_LATCH);
399 
400 	/* ack all interrupts */
401 	WRITE_REG(sc, TXP_ISR, TXP_INT_RESERVED | TXP_INT_LATCH |
402 	    TXP_INT_A2H_7 | TXP_INT_A2H_6 | TXP_INT_A2H_5 | TXP_INT_A2H_4 |
403 	    TXP_INT_SELF | TXP_INT_PCI_TABORT | TXP_INT_PCI_MABORT |
404 	    TXP_INT_DMA3 | TXP_INT_DMA2 | TXP_INT_DMA1 | TXP_INT_DMA0 |
405 	    TXP_INT_A2H_3 | TXP_INT_A2H_2 | TXP_INT_A2H_1 | TXP_INT_A2H_0);
406 
407 	return (0);
408 }
409 
410 static int
411 txp_reset_adapter(struct txp_softc *sc)
412 {
413 	uint32_t r;
414 	int i;
415 
416 	WRITE_REG(sc, TXP_SRR, TXP_SRR_ALL);
417 	DELAY(1000);
418 	WRITE_REG(sc, TXP_SRR, 0);
419 
420 	/* Should wait max 6 seconds */
421 	for (i = 0; i < 6000; i++) {
422 		r = READ_REG(sc, TXP_A2H_0);
423 		if (r == STAT_WAITING_FOR_HOST_REQUEST)
424 			break;
425 		DELAY(1000);
426 	}
427 
428 	if (r != STAT_WAITING_FOR_HOST_REQUEST) {
429 		printf("%s: reset hung\n", TXP_DEVNAME(sc));
430 		return (-1);
431 	}
432 
433 	return (0);
434 }
435 
436 static int
437 txp_download_fw(struct txp_softc *sc)
438 {
439 	const struct txp_fw_file_header *fileheader;
440 	const struct txp_fw_section_header *secthead;
441 	int sect;
442 	uint32_t r, i, ier, imr;
443 
444 	ier = READ_REG(sc, TXP_IER);
445 	WRITE_REG(sc, TXP_IER, ier | TXP_INT_A2H_0);
446 
447 	imr = READ_REG(sc, TXP_IMR);
448 	WRITE_REG(sc, TXP_IMR, imr | TXP_INT_A2H_0);
449 
450 	for (i = 0; i < 10000; i++) {
451 		r = READ_REG(sc, TXP_A2H_0);
452 		if (r == STAT_WAITING_FOR_HOST_REQUEST)
453 			break;
454 		DELAY(50);
455 	}
456 	if (r != STAT_WAITING_FOR_HOST_REQUEST) {
457 		printf(": not waiting for host request\n");
458 		return (-1);
459 	}
460 
461 	/* Ack the status */
462 	WRITE_REG(sc, TXP_ISR, TXP_INT_A2H_0);
463 
464 	fileheader = (const struct txp_fw_file_header *)tc990image;
465 	if (memcmp("TYPHOON", fileheader->magicid,
466 	    sizeof(fileheader->magicid))) {
467 		printf(": fw invalid magic\n");
468 		return (-1);
469 	}
470 
471 	/* Tell boot firmware to get ready for image */
472 	WRITE_REG(sc, TXP_H2A_1, le32toh(fileheader->addr));
473 	WRITE_REG(sc, TXP_H2A_2, le32toh(fileheader->hmac[0]));
474 	WRITE_REG(sc, TXP_H2A_3, le32toh(fileheader->hmac[1]));
475 	WRITE_REG(sc, TXP_H2A_4, le32toh(fileheader->hmac[2]));
476 	WRITE_REG(sc, TXP_H2A_5, le32toh(fileheader->hmac[3]));
477 	WRITE_REG(sc, TXP_H2A_6, le32toh(fileheader->hmac[4]));
478 	WRITE_REG(sc, TXP_H2A_0, TXP_BOOTCMD_RUNTIME_IMAGE);
479 
480 	if (txp_download_fw_wait(sc)) {
481 		printf("%s: fw wait failed, initial\n",
482 		    device_xname(sc->sc_dev));
483 		return (-1);
484 	}
485 
486 	secthead = (const struct txp_fw_section_header *)
487 		(((const uint8_t *)tc990image) +
488 		 sizeof(struct txp_fw_file_header));
489 
490 	for (sect = 0; sect < le32toh(fileheader->nsections); sect++) {
491 		if (txp_download_fw_section(sc, secthead, sect))
492 			return (-1);
493 		secthead = (const struct txp_fw_section_header *)
494 		    (((const uint8_t *)secthead) + le32toh(secthead->nbytes) +
495 			sizeof(*secthead));
496 	}
497 
498 	WRITE_REG(sc, TXP_H2A_0, TXP_BOOTCMD_DOWNLOAD_COMPLETE);
499 
500 	for (i = 0; i < 10000; i++) {
501 		r = READ_REG(sc, TXP_A2H_0);
502 		if (r == STAT_WAITING_FOR_BOOT)
503 			break;
504 		DELAY(50);
505 	}
506 	if (r != STAT_WAITING_FOR_BOOT) {
507 		printf(": not waiting for boot\n");
508 		return (-1);
509 	}
510 
511 	WRITE_REG(sc, TXP_IER, ier);
512 	WRITE_REG(sc, TXP_IMR, imr);
513 
514 	return (0);
515 }
516 
517 static int
518 txp_download_fw_wait(struct txp_softc *sc)
519 {
520 	uint32_t i, r;
521 
522 	for (i = 0; i < 10000; i++) {
523 		r = READ_REG(sc, TXP_ISR);
524 		if (r & TXP_INT_A2H_0)
525 			break;
526 		DELAY(50);
527 	}
528 
529 	if (!(r & TXP_INT_A2H_0)) {
530 		printf(": fw wait failed comm0\n");
531 		return (-1);
532 	}
533 
534 	WRITE_REG(sc, TXP_ISR, TXP_INT_A2H_0);
535 
536 	r = READ_REG(sc, TXP_A2H_0);
537 	if (r != STAT_WAITING_FOR_SEGMENT) {
538 		printf(": fw not waiting for segment\n");
539 		return (-1);
540 	}
541 	return (0);
542 }
543 
544 static int
545 txp_download_fw_section(struct txp_softc *sc,
546     const struct txp_fw_section_header *sect, int sectnum)
547 {
548 	struct txp_dma_alloc dma;
549 	int rseg, err = 0;
550 	struct mbuf m;
551 #ifdef INET
552 	uint16_t csum;
553 #endif
554 
555 	/* Skip zero length sections */
556 	if (sect->nbytes == 0)
557 		return (0);
558 
559 	/* Make sure we aren't past the end of the image */
560 	rseg = ((const uint8_t *)sect) - ((const uint8_t *)tc990image);
561 	if (rseg >= sizeof(tc990image)) {
562 		printf(": fw invalid section address, section %d\n", sectnum);
563 		return (-1);
564 	}
565 
566 	/* Make sure this section doesn't go past the end */
567 	rseg += le32toh(sect->nbytes);
568 	if (rseg >= sizeof(tc990image)) {
569 		printf(": fw truncated section %d\n", sectnum);
570 		return (-1);
571 	}
572 
573 	/* map a buffer, copy segment to it, get physaddr */
574 	if (txp_dma_malloc(sc, le32toh(sect->nbytes), &dma, 0)) {
575 		printf(": fw dma malloc failed, section %d\n", sectnum);
576 		return (-1);
577 	}
578 
579 	memcpy(dma.dma_vaddr, ((const uint8_t *)sect) + sizeof(*sect),
580 	    le32toh(sect->nbytes));
581 
582 	/*
583 	 * dummy up mbuf and verify section checksum
584 	 */
585 	m.m_type = MT_DATA;
586 	m.m_next = m.m_nextpkt = NULL;
587 	m.m_owner = NULL;
588 	m.m_len = le32toh(sect->nbytes);
589 	m.m_data = dma.dma_vaddr;
590 	m.m_flags = 0;
591 #ifdef INET
592 	csum = in_cksum(&m, le32toh(sect->nbytes));
593 	if (csum != sect->cksum) {
594 		printf(": fw section %d, bad cksum (expected 0x%x got 0x%x)\n",
595 		    sectnum, sect->cksum, csum);
596 		txp_dma_free(sc, &dma);
597 		return -1;
598 	}
599 #endif
600 
601 	bus_dmamap_sync(sc->sc_dmat, dma.dma_map, 0,
602 	    dma.dma_map->dm_mapsize, BUS_DMASYNC_PREWRITE);
603 
604 	WRITE_REG(sc, TXP_H2A_1, le32toh(sect->nbytes));
605 	WRITE_REG(sc, TXP_H2A_2, le32toh(sect->cksum));
606 	WRITE_REG(sc, TXP_H2A_3, le32toh(sect->addr));
607 	WRITE_REG(sc, TXP_H2A_4, BUS_ADDR_HI32(dma.dma_paddr));
608 	WRITE_REG(sc, TXP_H2A_5, BUS_ADDR_LO32(dma.dma_paddr));
609 	WRITE_REG(sc, TXP_H2A_0, TXP_BOOTCMD_SEGMENT_AVAILABLE);
610 
611 	if (txp_download_fw_wait(sc)) {
612 		printf("%s: fw wait failed, section %d\n",
613 		    device_xname(sc->sc_dev), sectnum);
614 		err = -1;
615 	}
616 
617 	bus_dmamap_sync(sc->sc_dmat, dma.dma_map, 0,
618 	    dma.dma_map->dm_mapsize, BUS_DMASYNC_POSTWRITE);
619 
620 	txp_dma_free(sc, &dma);
621 	return (err);
622 }
623 
624 static int
625 txp_intr(void *vsc)
626 {
627 	struct txp_softc *sc = vsc;
628 	struct txp_hostvar *hv = sc->sc_hostvar;
629 	uint32_t isr;
630 	int claimed = 0;
631 
632 	/* mask all interrupts */
633 	WRITE_REG(sc, TXP_IMR, TXP_INT_RESERVED | TXP_INT_SELF |
634 	    TXP_INT_A2H_7 | TXP_INT_A2H_6 | TXP_INT_A2H_5 | TXP_INT_A2H_4 |
635 	    TXP_INT_A2H_2 | TXP_INT_A2H_1 | TXP_INT_A2H_0 |
636 	    TXP_INT_DMA3 | TXP_INT_DMA2 | TXP_INT_DMA1 | TXP_INT_DMA0 |
637 	    TXP_INT_PCI_TABORT | TXP_INT_PCI_MABORT |  TXP_INT_LATCH);
638 
639 	bus_dmamap_sync(sc->sc_dmat, sc->sc_host_dma.dma_map, 0,
640 	    sizeof(struct txp_hostvar),
641 	    BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD);
642 
643 	isr = READ_REG(sc, TXP_ISR);
644 	while (isr) {
645 		claimed = 1;
646 		WRITE_REG(sc, TXP_ISR, isr);
647 
648 		if ((*sc->sc_rxhir.r_roff) != (*sc->sc_rxhir.r_woff))
649 			txp_rx_reclaim(sc, &sc->sc_rxhir, &sc->sc_rxhiring_dma);
650 		if ((*sc->sc_rxlor.r_roff) != (*sc->sc_rxlor.r_woff))
651 			txp_rx_reclaim(sc, &sc->sc_rxlor, &sc->sc_rxloring_dma);
652 
653 		if (hv->hv_rx_buf_write_idx == hv->hv_rx_buf_read_idx)
654 			txp_rxbuf_reclaim(sc);
655 
656 		if (sc->sc_txhir.r_cnt && (sc->sc_txhir.r_cons !=
657 		    TXP_OFFSET2IDX(le32toh(*(sc->sc_txhir.r_off)))))
658 			txp_tx_reclaim(sc, &sc->sc_txhir, &sc->sc_txhiring_dma);
659 
660 		if (sc->sc_txlor.r_cnt && (sc->sc_txlor.r_cons !=
661 		    TXP_OFFSET2IDX(le32toh(*(sc->sc_txlor.r_off)))))
662 			txp_tx_reclaim(sc, &sc->sc_txlor, &sc->sc_txloring_dma);
663 
664 		isr = READ_REG(sc, TXP_ISR);
665 	}
666 
667 	bus_dmamap_sync(sc->sc_dmat, sc->sc_host_dma.dma_map, 0,
668 	    sizeof(struct txp_hostvar),
669 	    BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD);
670 
671 	/* unmask all interrupts */
672 	WRITE_REG(sc, TXP_IMR, TXP_INT_A2H_3);
673 
674 	if_schedule_deferred_start(&sc->sc_arpcom.ec_if);
675 
676 	return (claimed);
677 }
678 
679 static struct txp_swdesc *
680 txp_rxd_alloc(struct txp_softc *sc)
681 {
682 	if (sc->sc_txd_pool_ptr == 0)
683 		return NULL;
684 	return sc->sc_rxd_pool[--sc->sc_txd_pool_ptr];
685 }
686 
687 static void
688 txp_rxd_free(struct txp_softc *sc, struct txp_swdesc *sd)
689 {
690 	KASSERT(sc->sc_txd_pool_ptr < RXBUF_ENTRIES);
691 	sc->sc_rxd_pool[sc->sc_txd_pool_ptr++] = sd;
692 }
693 
694 static inline uint32_t
695 txp_rxd_idx(struct txp_softc *sc, struct txp_swdesc *sd)
696 {
697 	KASSERT(sd >= &sc->sc_rxd[0] && sd < &sc->sc_rxd[RXBUF_ENTRIES]);
698 	return (uint32_t)(sd - &sc->sc_rxd[0]);
699 }
700 
701 static inline uint32_t
702 txp_txd_idx(struct txp_softc *sc, struct txp_swdesc *sd)
703 {
704 	KASSERT(sd >= &sc->sc_txd[0] && sd < &sc->sc_txd[TX_ENTRIES]);
705 	return (uint32_t)(sd - &sc->sc_txd[0]);
706 }
707 
708 static void
709 txp_rx_reclaim(struct txp_softc *sc, struct txp_rx_ring *r,
710     struct txp_dma_alloc *dma)
711 {
712 	struct ifnet *ifp = &sc->sc_arpcom.ec_if;
713 	struct txp_rx_desc *rxd;
714 	struct mbuf *m;
715 	struct txp_swdesc *sd;
716 	uint32_t roff, woff;
717 	uint16_t len;
718 	int sumflags = 0;
719 	int idx;
720 
721 	roff = le32toh(*r->r_roff);
722 	woff = le32toh(*r->r_woff);
723 	idx = roff / sizeof(struct txp_rx_desc);
724 	rxd = r->r_desc + idx;
725 
726 	while (roff != woff) {
727 
728 		bus_dmamap_sync(sc->sc_dmat, dma->dma_map,
729 		    idx * sizeof(struct txp_rx_desc),
730 		    sizeof(struct txp_rx_desc), BUS_DMASYNC_POSTREAD);
731 
732 		if (rxd->rx_flags & RX_FLAGS_ERROR) {
733 			printf("%s: error 0x%x\n", device_xname(sc->sc_dev),
734 			    le32toh(rxd->rx_stat));
735 			if_statinc(ifp, if_ierrors);
736 			goto next;
737 		}
738 
739 		/* retrieve stashed pointer */
740 		KASSERT(rxd->rx_vaddrlo < RXBUF_ENTRIES);
741 		sd = &sc->sc_rxd[rxd->rx_vaddrlo];
742 
743 		bus_dmamap_sync(sc->sc_dmat, sd->sd_map, 0,
744 		    sd->sd_map->dm_mapsize, BUS_DMASYNC_POSTREAD);
745 
746 		len = le16toh(rxd->rx_len);
747 
748 #ifdef __NO_STRICT_ALIGNMENT
749 		bus_dmamap_unload(sc->sc_dmat, sd->sd_map);
750 		m = sd->sd_mbuf;
751 		sd->sd_mbuf = NULL;
752 		txp_rxd_free(sc, sd);
753 #else
754 		/*
755 		 * The Typhoon's receive buffers must be 4-byte aligned.
756 		 * But this means the data after the Ethernet header
757 		 * is misaligned.  We must allocate a new buffer and
758 		 * copy the data, shifted forward 2 bytes.
759 		 */
760 		MGETHDR(m, M_DONTWAIT, MT_DATA);
761 		if (m == NULL) {
762  dropit:
763 			if_statinc(ifp, if_ierrors);
764 			txp_rxd_free(sc, sd);
765 			goto next;
766 		}
767 		MCLAIM(m, &sc->sc_arpcom.ec_rx_mowner);
768 		if (len > (MHLEN - ETHER_ALIGN)) {
769 			MCLGET(m, M_DONTWAIT);
770 			if ((m->m_flags & M_EXT) == 0) {
771 				m_freem(m);
772 				goto dropit;
773 			}
774 		}
775 		m_set_rcvif(m, ifp);
776 		m->m_data += ETHER_ALIGN;
777 		memcpy(mtod(m, void *), mtod(sd->sd_mbuf, void *), len);
778 		txp_rxd_free(sc, sd);
779 #endif /* __NO_STRICT_ALIGNMENT */
780 
781 		m->m_pkthdr.len = m->m_len = len;
782 
783 		if (rxd->rx_stat & htole32(RX_STAT_IPCKSUMBAD))
784 			sumflags |= (M_CSUM_IPv4 | M_CSUM_IPv4_BAD);
785 		else if (rxd->rx_stat & htole32(RX_STAT_IPCKSUMGOOD))
786 			sumflags |= M_CSUM_IPv4;
787 
788 		if (rxd->rx_stat & htole32(RX_STAT_TCPCKSUMBAD))
789 			sumflags |= (M_CSUM_TCPv4 | M_CSUM_TCP_UDP_BAD);
790 		else if (rxd->rx_stat & htole32(RX_STAT_TCPCKSUMGOOD))
791 			sumflags |= M_CSUM_TCPv4;
792 
793 		if (rxd->rx_stat & htole32(RX_STAT_UDPCKSUMBAD))
794 			sumflags |= (M_CSUM_UDPv4 | M_CSUM_TCP_UDP_BAD);
795 		else if (rxd->rx_stat & htole32(RX_STAT_UDPCKSUMGOOD))
796 			sumflags |= M_CSUM_UDPv4;
797 
798 		m->m_pkthdr.csum_flags = sumflags;
799 
800 		if (rxd->rx_stat & htole32(RX_STAT_VLAN)) {
801 			vlan_set_tag(m, htons(rxd->rx_vlan >> 16));
802 		}
803 
804 		if_percpuq_enqueue(ifp->if_percpuq, m);
805 
806 next:
807 		bus_dmamap_sync(sc->sc_dmat, dma->dma_map,
808 		    idx * sizeof(struct txp_rx_desc),
809 		    sizeof(struct txp_rx_desc), BUS_DMASYNC_PREREAD);
810 
811 		roff += sizeof(struct txp_rx_desc);
812 		if (roff == (RX_ENTRIES * sizeof(struct txp_rx_desc))) {
813 			idx = 0;
814 			roff = 0;
815 			rxd = r->r_desc;
816 		} else {
817 			idx++;
818 			rxd++;
819 		}
820 		woff = le32toh(*r->r_woff);
821 	}
822 
823 	*r->r_roff = htole32(woff);
824 }
825 
826 static void
827 txp_rxbuf_reclaim(struct txp_softc *sc)
828 {
829 	struct ifnet *ifp = &sc->sc_arpcom.ec_if;
830 	struct txp_hostvar *hv = sc->sc_hostvar;
831 	struct txp_rxbuf_desc *rbd;
832 	struct txp_swdesc *sd;
833 	uint32_t i, end;
834 
835 	end = TXP_OFFSET2IDX(le32toh(hv->hv_rx_buf_read_idx));
836 	i = TXP_OFFSET2IDX(le32toh(hv->hv_rx_buf_write_idx));
837 
838 	if (++i == RXBUF_ENTRIES)
839 		i = 0;
840 
841 	rbd = sc->sc_rxbufs + i;
842 
843 	while (i != end) {
844 		sd = txp_rxd_alloc(sc);
845 		if (sd == NULL)
846 			break;
847 
848 		/* We might already have a buffer allocated. */
849 		if (sd->sd_mbuf == NULL) {
850 			MGETHDR(sd->sd_mbuf, M_DONTWAIT, MT_DATA);
851 			if (sd->sd_mbuf == NULL)
852 				goto err_sd;
853 			MCLAIM(sd->sd_mbuf, &sc->sc_arpcom.ec_rx_mowner);
854 
855 			MCLGET(sd->sd_mbuf, M_DONTWAIT);
856 			if ((sd->sd_mbuf->m_flags & M_EXT) == 0)
857 				goto err_mbuf;
858 			m_set_rcvif(sd->sd_mbuf, ifp);
859 			sd->sd_mbuf->m_pkthdr.len =
860 			    sd->sd_mbuf->m_len = MCLBYTES;
861 			if (bus_dmamap_load_mbuf(sc->sc_dmat, sd->sd_map,
862 			    sd->sd_mbuf, BUS_DMA_NOWAIT)) {
863 				goto err_mbuf;
864 			}
865 		}
866 
867 		bus_dmamap_sync(sc->sc_dmat, sc->sc_rxbufring_dma.dma_map,
868 		    i * sizeof(struct txp_rxbuf_desc),
869 		    sizeof(struct txp_rxbuf_desc), BUS_DMASYNC_POSTWRITE);
870 
871 		/* stash away pointer */
872 		rbd->rb_vaddrlo = txp_rxd_idx(sc, sd);
873 
874 		rbd->rb_paddrlo =
875 		    htole32(BUS_ADDR_LO32(sd->sd_map->dm_segs[0].ds_addr));
876 		rbd->rb_paddrhi =
877 		    htole32(BUS_ADDR_HI32(sd->sd_map->dm_segs[0].ds_addr));
878 
879 		bus_dmamap_sync(sc->sc_dmat, sd->sd_map, 0,
880 		    sd->sd_map->dm_mapsize, BUS_DMASYNC_PREREAD);
881 
882 		bus_dmamap_sync(sc->sc_dmat, sc->sc_rxbufring_dma.dma_map,
883 		    i * sizeof(struct txp_rxbuf_desc),
884 		    sizeof(struct txp_rxbuf_desc), BUS_DMASYNC_PREWRITE);
885 
886 		hv->hv_rx_buf_write_idx = htole32(TXP_IDX2OFFSET(i));
887 
888 		if (++i == RXBUF_ENTRIES) {
889 			i = 0;
890 			rbd = sc->sc_rxbufs;
891 		} else
892 			rbd++;
893 	}
894 	return;
895 
896 err_mbuf:
897 	m_freem(sd->sd_mbuf);
898 	sd->sd_mbuf = NULL;
899 err_sd:
900 	txp_rxd_free(sc, sd);
901 }
902 
903 /*
904  * Reclaim mbufs and entries from a transmit ring.
905  */
906 static void
907 txp_tx_reclaim(struct txp_softc *sc, struct txp_tx_ring *r,
908     struct txp_dma_alloc *dma)
909 {
910 	struct ifnet *ifp = &sc->sc_arpcom.ec_if;
911 	uint32_t idx = TXP_OFFSET2IDX(le32toh(*(r->r_off)));
912 	uint32_t cons = r->r_cons, cnt = r->r_cnt;
913 	struct txp_tx_desc *txd = r->r_desc + cons;
914 	struct txp_swdesc *sd;
915 	struct mbuf *m;
916 
917 	while (cons != idx) {
918 		if (cnt == 0)
919 			break;
920 
921 		bus_dmamap_sync(sc->sc_dmat, dma->dma_map,
922 		    cons * sizeof(struct txp_tx_desc),
923 		    sizeof(struct txp_tx_desc),
924 		    BUS_DMASYNC_POSTWRITE);
925 
926 		if ((txd->tx_flags & TX_FLAGS_TYPE_M) ==
927 		    TX_FLAGS_TYPE_DATA) {
928 			KASSERT(txd->tx_addrlo < TX_ENTRIES);
929 			sd = &sc->sc_txd[txd->tx_addrlo];
930 			m = sd->sd_mbuf;
931 			sd->sd_mbuf = NULL;
932 			if (m != NULL) {
933 				bus_dmamap_sync(sc->sc_dmat, sd->sd_map, 0,
934 				    sd->sd_map->dm_mapsize,
935 				    BUS_DMASYNC_POSTWRITE);
936 				bus_dmamap_unload(sc->sc_dmat, sd->sd_map);
937 				m_freem(m);
938 				txd->tx_addrlo = 0;
939 				txd->tx_addrhi = 0;
940 				if_statinc(ifp, if_opackets);
941 			}
942 		}
943 		ifp->if_flags &= ~IFF_OACTIVE;
944 
945 		if (++cons == TX_ENTRIES) {
946 			txd = r->r_desc;
947 			cons = 0;
948 		} else
949 			txd++;
950 
951 		cnt--;
952 	}
953 
954 	r->r_cons = cons;
955 	r->r_cnt = cnt;
956 	if (cnt == 0)
957 		ifp->if_timer = 0;
958 }
959 
960 static bool
961 txp_shutdown(device_t self, int howto)
962 {
963 	struct txp_softc *sc;
964 
965 	sc = device_private(self);
966 
967 	/* mask all interrupts */
968 	WRITE_REG(sc, TXP_IMR,
969 	    TXP_INT_SELF | TXP_INT_PCI_TABORT | TXP_INT_PCI_MABORT |
970 	    TXP_INT_DMA3 | TXP_INT_DMA2 | TXP_INT_DMA1 | TXP_INT_DMA0 |
971 	    TXP_INT_LATCH);
972 
973 	txp_command(sc, TXP_CMD_TX_DISABLE, 0, 0, 0, NULL, NULL, NULL, 0);
974 	txp_command(sc, TXP_CMD_RX_DISABLE, 0, 0, 0, NULL, NULL, NULL, 0);
975 	txp_command(sc, TXP_CMD_HALT, 0, 0, 0, NULL, NULL, NULL, 0);
976 
977 	return true;
978 }
979 
980 static int
981 txp_alloc_rings(struct txp_softc *sc)
982 {
983 	struct ifnet *ifp = &sc->sc_arpcom.ec_if;
984 	struct txp_boot_record *boot;
985 	struct txp_swdesc *sd;
986 	uint32_t r;
987 	int i, j, nb;
988 
989 	/* boot record */
990 	if (txp_dma_malloc(sc, sizeof(struct txp_boot_record),
991 	    &sc->sc_boot_dma, BUS_DMA_COHERENT)) {
992 		printf(": can't allocate boot record\n");
993 		return (-1);
994 	}
995 	boot = (struct txp_boot_record *)sc->sc_boot_dma.dma_vaddr;
996 	memset(boot, 0, sizeof(*boot));
997 	sc->sc_boot = boot;
998 
999 	/* host variables */
1000 	if (txp_dma_malloc(sc, sizeof(struct txp_hostvar), &sc->sc_host_dma,
1001 	    BUS_DMA_COHERENT)) {
1002 		printf(": can't allocate host ring\n");
1003 		goto bail_boot;
1004 	}
1005 	memset(sc->sc_host_dma.dma_vaddr, 0, sizeof(struct txp_hostvar));
1006 	boot->br_hostvar_lo = htole32(BUS_ADDR_LO32(sc->sc_host_dma.dma_paddr));
1007 	boot->br_hostvar_hi = htole32(BUS_ADDR_HI32(sc->sc_host_dma.dma_paddr));
1008 	sc->sc_hostvar = (struct txp_hostvar *)sc->sc_host_dma.dma_vaddr;
1009 
1010 	/* high priority tx ring */
1011 	if (txp_dma_malloc(sc, sizeof(struct txp_tx_desc) * TX_ENTRIES,
1012 	    &sc->sc_txhiring_dma, BUS_DMA_COHERENT)) {
1013 		printf(": can't allocate high tx ring\n");
1014 		goto bail_host;
1015 	}
1016 	memset(sc->sc_txhiring_dma.dma_vaddr, 0,
1017 	    sizeof(struct txp_tx_desc) * TX_ENTRIES);
1018 	boot->br_txhipri_lo =
1019 	    htole32(BUS_ADDR_LO32(sc->sc_txhiring_dma.dma_paddr));
1020 	boot->br_txhipri_hi =
1021 	    htole32(BUS_ADDR_HI32(sc->sc_txhiring_dma.dma_paddr));
1022 	boot->br_txhipri_siz = htole32(TX_ENTRIES * sizeof(struct txp_tx_desc));
1023 	sc->sc_txhir.r_reg = TXP_H2A_1;
1024 	sc->sc_txhir.r_desc =
1025 	    (struct txp_tx_desc *)sc->sc_txhiring_dma.dma_vaddr;
1026 	sc->sc_txhir.r_cons = sc->sc_txhir.r_prod = sc->sc_txhir.r_cnt = 0;
1027 	sc->sc_txhir.r_off = &sc->sc_hostvar->hv_tx_hi_desc_read_idx;
1028 	for (i = 0; i < TX_ENTRIES; i++) {
1029 		if (bus_dmamap_create(sc->sc_dmat, TXP_MAX_PKTLEN,
1030 		    TXP_MAXTXSEGS, TXP_MAX_SEGLEN, 0, BUS_DMA_NOWAIT,
1031 		    &sc->sc_txd[i].sd_map) != 0) {
1032 			for (j = 0; j < i; j++) {
1033 				bus_dmamap_destroy(sc->sc_dmat,
1034 				    sc->sc_txd[j].sd_map);
1035 				sc->sc_txd[j].sd_map = NULL;
1036 			}
1037 			goto bail_txhiring;
1038 		}
1039 	}
1040 
1041 	/* low priority tx ring */
1042 	if (txp_dma_malloc(sc, sizeof(struct txp_tx_desc) * TX_ENTRIES,
1043 	    &sc->sc_txloring_dma, BUS_DMA_COHERENT)) {
1044 		printf(": can't allocate low tx ring\n");
1045 		goto bail_txhiring;
1046 	}
1047 	memset(sc->sc_txloring_dma.dma_vaddr, 0,
1048 	    sizeof(struct txp_tx_desc) * TX_ENTRIES);
1049 	boot->br_txlopri_lo =
1050 	    htole32(BUS_ADDR_LO32(sc->sc_txloring_dma.dma_paddr));
1051 	boot->br_txlopri_hi =
1052 	    htole32(BUS_ADDR_HI32(sc->sc_txloring_dma.dma_paddr));
1053 	boot->br_txlopri_siz = htole32(TX_ENTRIES * sizeof(struct txp_tx_desc));
1054 	sc->sc_txlor.r_reg = TXP_H2A_3;
1055 	sc->sc_txlor.r_desc =
1056 	    (struct txp_tx_desc *)sc->sc_txloring_dma.dma_vaddr;
1057 	sc->sc_txlor.r_cons = sc->sc_txlor.r_prod = sc->sc_txlor.r_cnt = 0;
1058 	sc->sc_txlor.r_off = &sc->sc_hostvar->hv_tx_lo_desc_read_idx;
1059 
1060 	/* high priority rx ring */
1061 	if (txp_dma_malloc(sc, sizeof(struct txp_rx_desc) * RX_ENTRIES,
1062 	    &sc->sc_rxhiring_dma, BUS_DMA_COHERENT)) {
1063 		printf(": can't allocate high rx ring\n");
1064 		goto bail_txloring;
1065 	}
1066 	memset(sc->sc_rxhiring_dma.dma_vaddr, 0,
1067 	    sizeof(struct txp_rx_desc) * RX_ENTRIES);
1068 	boot->br_rxhipri_lo =
1069 	    htole32(BUS_ADDR_LO32(sc->sc_rxhiring_dma.dma_paddr));
1070 	boot->br_rxhipri_hi =
1071 	    htole32(BUS_ADDR_HI32(sc->sc_rxhiring_dma.dma_paddr));
1072 	boot->br_rxhipri_siz = htole32(RX_ENTRIES * sizeof(struct txp_rx_desc));
1073 	sc->sc_rxhir.r_desc =
1074 	    (struct txp_rx_desc *)sc->sc_rxhiring_dma.dma_vaddr;
1075 	sc->sc_rxhir.r_roff = &sc->sc_hostvar->hv_rx_hi_read_idx;
1076 	sc->sc_rxhir.r_woff = &sc->sc_hostvar->hv_rx_hi_write_idx;
1077 	bus_dmamap_sync(sc->sc_dmat, sc->sc_rxhiring_dma.dma_map,
1078 	    0, sc->sc_rxhiring_dma.dma_map->dm_mapsize, BUS_DMASYNC_PREREAD);
1079 
1080 	/* low priority ring */
1081 	if (txp_dma_malloc(sc, sizeof(struct txp_rx_desc) * RX_ENTRIES,
1082 	    &sc->sc_rxloring_dma, BUS_DMA_COHERENT)) {
1083 		printf(": can't allocate low rx ring\n");
1084 		goto bail_rxhiring;
1085 	}
1086 	memset(sc->sc_rxloring_dma.dma_vaddr, 0,
1087 	    sizeof(struct txp_rx_desc) * RX_ENTRIES);
1088 	boot->br_rxlopri_lo =
1089 	    htole32(BUS_ADDR_LO32(sc->sc_rxloring_dma.dma_paddr));
1090 	boot->br_rxlopri_hi =
1091 	    htole32(BUS_ADDR_HI32(sc->sc_rxloring_dma.dma_paddr));
1092 	boot->br_rxlopri_siz = htole32(RX_ENTRIES * sizeof(struct txp_rx_desc));
1093 	sc->sc_rxlor.r_desc =
1094 	    (struct txp_rx_desc *)sc->sc_rxloring_dma.dma_vaddr;
1095 	sc->sc_rxlor.r_roff = &sc->sc_hostvar->hv_rx_lo_read_idx;
1096 	sc->sc_rxlor.r_woff = &sc->sc_hostvar->hv_rx_lo_write_idx;
1097 	bus_dmamap_sync(sc->sc_dmat, sc->sc_rxloring_dma.dma_map,
1098 	    0, sc->sc_rxloring_dma.dma_map->dm_mapsize, BUS_DMASYNC_PREREAD);
1099 
1100 	/* command ring */
1101 	if (txp_dma_malloc(sc, sizeof(struct txp_cmd_desc) * CMD_ENTRIES,
1102 	    &sc->sc_cmdring_dma, BUS_DMA_COHERENT)) {
1103 		printf(": can't allocate command ring\n");
1104 		goto bail_rxloring;
1105 	}
1106 	memset(sc->sc_cmdring_dma.dma_vaddr, 0,
1107 	    sizeof(struct txp_cmd_desc) * CMD_ENTRIES);
1108 	boot->br_cmd_lo = htole32(BUS_ADDR_LO32(sc->sc_cmdring_dma.dma_paddr));
1109 	boot->br_cmd_hi = htole32(BUS_ADDR_HI32(sc->sc_cmdring_dma.dma_paddr));
1110 	boot->br_cmd_siz = htole32(CMD_ENTRIES * sizeof(struct txp_cmd_desc));
1111 	sc->sc_cmdring.base = (struct txp_cmd_desc *)sc->sc_cmdring_dma.dma_vaddr;
1112 	sc->sc_cmdring.size = CMD_ENTRIES * sizeof(struct txp_cmd_desc);
1113 	sc->sc_cmdring.lastwrite = 0;
1114 
1115 	/* response ring */
1116 	if (txp_dma_malloc(sc, sizeof(struct txp_rsp_desc) * RSP_ENTRIES,
1117 	    &sc->sc_rspring_dma, BUS_DMA_COHERENT)) {
1118 		printf(": can't allocate response ring\n");
1119 		goto bail_cmdring;
1120 	}
1121 	memset(sc->sc_rspring_dma.dma_vaddr, 0,
1122 	    sizeof(struct txp_rsp_desc) * RSP_ENTRIES);
1123 	boot->br_resp_lo = htole32(BUS_ADDR_LO32(sc->sc_rspring_dma.dma_paddr));
1124 	boot->br_resp_hi = htole32(BUS_ADDR_HI32(sc->sc_rspring_dma.dma_paddr));
1125 	boot->br_resp_siz = htole32(CMD_ENTRIES * sizeof(struct txp_rsp_desc));
1126 	sc->sc_rspring.base = (struct txp_rsp_desc *)sc->sc_rspring_dma.dma_vaddr;
1127 	sc->sc_rspring.size = RSP_ENTRIES * sizeof(struct txp_rsp_desc);
1128 	sc->sc_rspring.lastwrite = 0;
1129 
1130 	/* receive buffer ring */
1131 	if (txp_dma_malloc(sc, sizeof(struct txp_rxbuf_desc) * RXBUF_ENTRIES,
1132 	    &sc->sc_rxbufring_dma, BUS_DMA_COHERENT)) {
1133 		printf(": can't allocate rx buffer ring\n");
1134 		goto bail_rspring;
1135 	}
1136 	memset(sc->sc_rxbufring_dma.dma_vaddr, 0,
1137 	    sizeof(struct txp_rxbuf_desc) * RXBUF_ENTRIES);
1138 	boot->br_rxbuf_lo = htole32(BUS_ADDR_LO32(sc->sc_rxbufring_dma.dma_paddr));
1139 	boot->br_rxbuf_hi = htole32(BUS_ADDR_HI32(sc->sc_rxbufring_dma.dma_paddr));
1140 	boot->br_rxbuf_siz = htole32(RXBUF_ENTRIES * sizeof(struct txp_rxbuf_desc));
1141 	sc->sc_rxbufs = (struct txp_rxbuf_desc *)sc->sc_rxbufring_dma.dma_vaddr;
1142 	for (nb = 0; nb < RXBUF_ENTRIES; nb++) {
1143 		sd = &sc->sc_rxd[nb];
1144 
1145 		/* stash away pointer */
1146 		sc->sc_rxbufs[nb].rb_vaddrlo = txp_rxd_idx(sc, sd);
1147 
1148 		MGETHDR(sd->sd_mbuf, M_WAIT, MT_DATA);
1149 		if (sd->sd_mbuf == NULL) {
1150 			goto bail_rxbufring;
1151 		}
1152 
1153 		MCLGET(sd->sd_mbuf, M_WAIT);
1154 		if ((sd->sd_mbuf->m_flags & M_EXT) == 0) {
1155 			goto bail_rxbufring;
1156 		}
1157 		sd->sd_mbuf->m_pkthdr.len = sd->sd_mbuf->m_len = MCLBYTES;
1158 		m_set_rcvif(sd->sd_mbuf, ifp);
1159 		if (bus_dmamap_create(sc->sc_dmat, TXP_MAX_PKTLEN, 1,
1160 		    TXP_MAX_PKTLEN, 0, BUS_DMA_WAITOK, &sd->sd_map)) {
1161 			goto bail_rxbufring;
1162 		}
1163 		if (bus_dmamap_load_mbuf(sc->sc_dmat, sd->sd_map, sd->sd_mbuf,
1164 		    BUS_DMA_WAITOK)) {
1165 			bus_dmamap_destroy(sc->sc_dmat, sd->sd_map);
1166 			goto bail_rxbufring;
1167 		}
1168 		bus_dmamap_sync(sc->sc_dmat, sd->sd_map, 0,
1169 		    sd->sd_map->dm_mapsize, BUS_DMASYNC_PREREAD);
1170 
1171 		sc->sc_rxbufs[nb].rb_paddrlo =
1172 		    htole32(BUS_ADDR_LO32(sd->sd_map->dm_segs[0].ds_addr));
1173 		sc->sc_rxbufs[nb].rb_paddrhi =
1174 		    htole32(BUS_ADDR_HI32(sd->sd_map->dm_segs[0].ds_addr));
1175 	}
1176 	bus_dmamap_sync(sc->sc_dmat, sc->sc_rxbufring_dma.dma_map,
1177 	    0, sc->sc_rxbufring_dma.dma_map->dm_mapsize,
1178 	    BUS_DMASYNC_PREWRITE);
1179 	sc->sc_hostvar->hv_rx_buf_write_idx = htole32((RXBUF_ENTRIES - 1) *
1180 	    sizeof(struct txp_rxbuf_desc));
1181 
1182 	/* zero dma */
1183 	if (txp_dma_malloc(sc, sizeof(uint32_t), &sc->sc_zero_dma,
1184 	    BUS_DMA_COHERENT)) {
1185 		printf(": can't allocate response ring\n");
1186 		goto bail_rxbufring;
1187 	}
1188 	memset(sc->sc_zero_dma.dma_vaddr, 0, sizeof(uint32_t));
1189 	boot->br_zero_lo = htole32(BUS_ADDR_LO32(sc->sc_zero_dma.dma_paddr));
1190 	boot->br_zero_hi = htole32(BUS_ADDR_HI32(sc->sc_zero_dma.dma_paddr));
1191 
1192 	/* See if it's waiting for boot, and try to boot it */
1193 	for (i = 0; i < 10000; i++) {
1194 		r = READ_REG(sc, TXP_A2H_0);
1195 		if (r == STAT_WAITING_FOR_BOOT)
1196 			break;
1197 		DELAY(50);
1198 	}
1199 	if (r != STAT_WAITING_FOR_BOOT) {
1200 		printf(": not waiting for boot\n");
1201 		goto bail;
1202 	}
1203 	WRITE_REG(sc, TXP_H2A_2, BUS_ADDR_HI32(sc->sc_boot_dma.dma_paddr));
1204 	WRITE_REG(sc, TXP_H2A_1, BUS_ADDR_LO32(sc->sc_boot_dma.dma_paddr));
1205 	WRITE_REG(sc, TXP_H2A_0, TXP_BOOTCMD_REGISTER_BOOT_RECORD);
1206 
1207 	/* See if it booted */
1208 	for (i = 0; i < 10000; i++) {
1209 		r = READ_REG(sc, TXP_A2H_0);
1210 		if (r == STAT_RUNNING)
1211 			break;
1212 		DELAY(50);
1213 	}
1214 	if (r != STAT_RUNNING) {
1215 		printf(": fw not running\n");
1216 		goto bail;
1217 	}
1218 
1219 	/* Clear TX and CMD ring write registers */
1220 	WRITE_REG(sc, TXP_H2A_1, TXP_BOOTCMD_NULL);
1221 	WRITE_REG(sc, TXP_H2A_2, TXP_BOOTCMD_NULL);
1222 	WRITE_REG(sc, TXP_H2A_3, TXP_BOOTCMD_NULL);
1223 	WRITE_REG(sc, TXP_H2A_0, TXP_BOOTCMD_NULL);
1224 
1225 	return (0);
1226 
1227 bail:
1228 	txp_dma_free(sc, &sc->sc_zero_dma);
1229 bail_rxbufring:
1230 	if (nb == RXBUF_ENTRIES)
1231 		nb--;
1232 	for (i = 0; i <= nb; i++) {
1233 		memcpy(&sd, __UNVOLATILE(&sc->sc_rxbufs[i].rb_vaddrlo),
1234 		    sizeof(sd));
1235 		/* XXXJRT */
1236 	}
1237 	txp_dma_free(sc, &sc->sc_rxbufring_dma);
1238 bail_rspring:
1239 	txp_dma_free(sc, &sc->sc_rspring_dma);
1240 bail_cmdring:
1241 	txp_dma_free(sc, &sc->sc_cmdring_dma);
1242 bail_rxloring:
1243 	txp_dma_free(sc, &sc->sc_rxloring_dma);
1244 bail_rxhiring:
1245 	txp_dma_free(sc, &sc->sc_rxhiring_dma);
1246 bail_txloring:
1247 	txp_dma_free(sc, &sc->sc_txloring_dma);
1248 bail_txhiring:
1249 	txp_dma_free(sc, &sc->sc_txhiring_dma);
1250 bail_host:
1251 	txp_dma_free(sc, &sc->sc_host_dma);
1252 bail_boot:
1253 	txp_dma_free(sc, &sc->sc_boot_dma);
1254 	return (-1);
1255 }
1256 
1257 static int
1258 txp_dma_malloc(struct txp_softc *sc, bus_size_t size,
1259     struct txp_dma_alloc *dma, int mapflags)
1260 {
1261 	int r;
1262 
1263 	if ((r = bus_dmamem_alloc(sc->sc_dmat, size, PAGE_SIZE, 0,
1264 	    &dma->dma_seg, 1, &dma->dma_nseg, 0)) != 0)
1265 		goto fail_0;
1266 
1267 	if ((r = bus_dmamem_map(sc->sc_dmat, &dma->dma_seg, dma->dma_nseg,
1268 	    size, &dma->dma_vaddr, mapflags | BUS_DMA_NOWAIT)) != 0)
1269 		goto fail_1;
1270 
1271 	if ((r = bus_dmamap_create(sc->sc_dmat, size, 1, size, 0,
1272 	    BUS_DMA_NOWAIT, &dma->dma_map)) != 0)
1273 		goto fail_2;
1274 
1275 	if ((r = bus_dmamap_load(sc->sc_dmat, dma->dma_map, dma->dma_vaddr,
1276 	    size, NULL, BUS_DMA_NOWAIT)) != 0)
1277 		goto fail_3;
1278 
1279 	dma->dma_paddr = dma->dma_map->dm_segs[0].ds_addr;
1280 	return (0);
1281 
1282 fail_3:
1283 	bus_dmamap_destroy(sc->sc_dmat, dma->dma_map);
1284 fail_2:
1285 	bus_dmamem_unmap(sc->sc_dmat, dma->dma_vaddr, size);
1286 fail_1:
1287 	bus_dmamem_free(sc->sc_dmat, &dma->dma_seg, dma->dma_nseg);
1288 fail_0:
1289 	return (r);
1290 }
1291 
1292 static void
1293 txp_dma_free(struct txp_softc *sc, struct txp_dma_alloc *dma)
1294 {
1295 	bus_size_t mapsize = dma->dma_map->dm_mapsize;
1296 
1297 	bus_dmamap_unload(sc->sc_dmat, dma->dma_map);
1298 	bus_dmamem_unmap(sc->sc_dmat, dma->dma_vaddr, mapsize);
1299 	bus_dmamem_free(sc->sc_dmat, &dma->dma_seg, dma->dma_nseg);
1300 	bus_dmamap_destroy(sc->sc_dmat, dma->dma_map);
1301 }
1302 
1303 static int
1304 txp_ioctl(struct ifnet *ifp, u_long command, void *data)
1305 {
1306 	struct txp_softc *sc = ifp->if_softc;
1307 	struct ifaddr *ifa = (struct ifaddr *)data;
1308 	int s, error = 0;
1309 
1310 	s = splnet();
1311 
1312 #if 0
1313 	if ((error = ether_ioctl(ifp, &sc->sc_arpcom, command, data)) > 0) {
1314 		splx(s);
1315 		return error;
1316 	}
1317 #endif
1318 
1319 	switch (command) {
1320 	case SIOCINITIFADDR:
1321 		ifp->if_flags |= IFF_UP;
1322 		txp_init(sc);
1323 		switch (ifa->ifa_addr->sa_family) {
1324 #ifdef INET
1325 		case AF_INET:
1326 			arp_ifinit(ifp, ifa);
1327 			break;
1328 #endif /* INET */
1329 		default:
1330 			break;
1331 		}
1332 		break;
1333 	case SIOCSIFFLAGS:
1334 		if ((error = ifioctl_common(ifp, command, data)) != 0)
1335 			break;
1336 		if (ifp->if_flags & IFF_UP) {
1337 			txp_init(sc);
1338 		} else {
1339 			if (ifp->if_flags & IFF_RUNNING)
1340 				txp_stop(sc);
1341 		}
1342 		break;
1343 	case SIOCADDMULTI:
1344 	case SIOCDELMULTI:
1345 		if ((error = ether_ioctl(ifp, command, data)) != ENETRESET)
1346 			break;
1347 
1348 		error = 0;
1349 
1350 		if (command != SIOCADDMULTI && command != SIOCDELMULTI)
1351 			;
1352 		else if (ifp->if_flags & IFF_RUNNING) {
1353 			/*
1354 			 * Multicast list has changed; set the hardware
1355 			 * filter accordingly.
1356 			 */
1357 			txp_set_filter(sc);
1358 		}
1359 		break;
1360 	default:
1361 		error = ether_ioctl(ifp, command, data);
1362 		break;
1363 	}
1364 
1365 	splx(s);
1366 
1367 	return (error);
1368 }
1369 
1370 static void
1371 txp_init(struct txp_softc *sc)
1372 {
1373 	struct ifnet *ifp = &sc->sc_arpcom.ec_if;
1374 	int s;
1375 
1376 	txp_stop(sc);
1377 
1378 	s = splnet();
1379 
1380 	txp_set_filter(sc);
1381 
1382 	txp_command(sc, TXP_CMD_TX_ENABLE, 0, 0, 0, NULL, NULL, NULL, 1);
1383 	txp_command(sc, TXP_CMD_RX_ENABLE, 0, 0, 0, NULL, NULL, NULL, 1);
1384 
1385 	WRITE_REG(sc, TXP_IER, TXP_INT_RESERVED | TXP_INT_SELF |
1386 	    TXP_INT_A2H_7 | TXP_INT_A2H_6 | TXP_INT_A2H_5 | TXP_INT_A2H_4 |
1387 	    TXP_INT_A2H_2 | TXP_INT_A2H_1 | TXP_INT_A2H_0 |
1388 	    TXP_INT_DMA3 | TXP_INT_DMA2 | TXP_INT_DMA1 | TXP_INT_DMA0 |
1389 	    TXP_INT_PCI_TABORT | TXP_INT_PCI_MABORT |  TXP_INT_LATCH);
1390 	WRITE_REG(sc, TXP_IMR, TXP_INT_A2H_3);
1391 
1392 	ifp->if_flags |= IFF_RUNNING;
1393 	ifp->if_flags &= ~IFF_OACTIVE;
1394 	ifp->if_timer = 0;
1395 
1396 	if (!callout_pending(&sc->sc_tick))
1397 		callout_schedule(&sc->sc_tick, hz);
1398 
1399 	splx(s);
1400 }
1401 
1402 static void
1403 txp_tick(void *vsc)
1404 {
1405 	struct txp_softc *sc = vsc;
1406 	struct ifnet *ifp = &sc->sc_arpcom.ec_if;
1407 	struct txp_rsp_desc *rsp = NULL;
1408 	struct txp_ext_desc *ext;
1409 	int s;
1410 
1411 	s = splnet();
1412 	txp_rxbuf_reclaim(sc);
1413 
1414 	if (txp_command2(sc, TXP_CMD_READ_STATISTICS, 0, 0, 0, NULL, 0,
1415 	    &rsp, 1))
1416 		goto out;
1417 	if (rsp->rsp_numdesc != 6)
1418 		goto out;
1419 	if (txp_command(sc, TXP_CMD_CLEAR_STATISTICS, 0, 0, 0,
1420 	    NULL, NULL, NULL, 1))
1421 		goto out;
1422 	ext = (struct txp_ext_desc *)(rsp + 1);
1423 
1424 	net_stat_ref_t nsr = IF_STAT_GETREF(ifp);
1425 	if_statadd_ref(nsr, if_ierrors,
1426 	    ext[3].ext_2 + ext[3].ext_3 + ext[3].ext_4 +
1427 	    ext[4].ext_1 + ext[4].ext_4);
1428 	if_statadd_ref(nsr, if_oerrors,
1429 	    ext[0].ext_1 + ext[1].ext_1 + ext[1].ext_4 + ext[2].ext_1);
1430 	if_statadd_ref(nsr, if_collisions,
1431 	    ext[0].ext_2 + ext[0].ext_3 + ext[1].ext_2 + ext[1].ext_3);
1432 	if_statadd_ref(nsr, if_opackets, rsp->rsp_par2);
1433 	IF_STAT_PUTREF(ifp);
1434 
1435 out:
1436 	if (rsp != NULL)
1437 		free(rsp, M_DEVBUF);
1438 
1439 	splx(s);
1440 	callout_schedule(&sc->sc_tick, hz);
1441 }
1442 
1443 static void
1444 txp_start(struct ifnet *ifp)
1445 {
1446 	struct txp_softc *sc = ifp->if_softc;
1447 	struct txp_tx_ring *r = &sc->sc_txhir;
1448 	struct txp_tx_desc *txd;
1449 	int txdidx;
1450 	struct txp_frag_desc *fxd;
1451 	struct mbuf *m, *mnew;
1452 	struct txp_swdesc *sd;
1453 	uint32_t prod, cnt, i;
1454 	int error;
1455 
1456 	if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING)
1457 		return;
1458 
1459 	prod = r->r_prod;
1460 	cnt = r->r_cnt;
1461 
1462 	while (1) {
1463 		if (cnt >= TX_ENTRIES - TXP_MAXTXSEGS - 4) {
1464 			ifp->if_flags |= IFF_OACTIVE;
1465 			break;
1466 		}
1467 
1468 		IFQ_POLL(&ifp->if_snd, m);
1469 		if (m == NULL)
1470 			break;
1471 		mnew = NULL;
1472 
1473 		sd = sc->sc_txd + prod;
1474 
1475 		/*
1476 		 * Load the DMA map.  If this fails, the packet either
1477 		 * didn't fit in the alloted number of segments, or we
1478 		 * were short on resources.  In this case, we'll copy
1479 		 * and try again.
1480 		 */
1481 		if (bus_dmamap_load_mbuf(sc->sc_dmat, sd->sd_map, m,
1482 		    BUS_DMA_NOWAIT) != 0) {
1483 			MGETHDR(mnew, M_DONTWAIT, MT_DATA);
1484 			if (mnew == NULL) {
1485 				printf("%s: unable to allocate Tx mbuf\n",
1486 				    device_xname(sc->sc_dev));
1487 				break;
1488 			}
1489 			MCLAIM(mnew, &sc->sc_arpcom.ec_tx_mowner);
1490 			if (m->m_pkthdr.len > MHLEN) {
1491 				MCLGET(mnew, M_DONTWAIT);
1492 				if ((mnew->m_flags & M_EXT) == 0) {
1493 					printf("%s: unable to allocate Tx "
1494 					    "cluster\n",
1495 					    device_xname(sc->sc_dev));
1496 					m_freem(mnew);
1497 					break;
1498 				}
1499 			}
1500 			m_copydata(m, 0, m->m_pkthdr.len, mtod(mnew, void *));
1501 			mnew->m_pkthdr.len = mnew->m_len = m->m_pkthdr.len;
1502 			error = bus_dmamap_load_mbuf(sc->sc_dmat, sd->sd_map,
1503 			    mnew, BUS_DMA_NOWAIT);
1504 			if (error) {
1505 				printf("%s: unable to load Tx buffer, "
1506 				    "error = %d\n", device_xname(sc->sc_dev),
1507 				    error);
1508 				m_freem(mnew);
1509 				break;
1510 			}
1511 		}
1512 
1513 		IFQ_DEQUEUE(&ifp->if_snd, m);
1514 		if (mnew != NULL) {
1515 			m_freem(m);
1516 			m = mnew;
1517 		}
1518 
1519 		/*
1520 		 * WE ARE NOW COMMITTED TO TRANSMITTING THE PACKET.
1521 		 */
1522 
1523 		sd->sd_mbuf = m;
1524 
1525 		txd = r->r_desc + prod;
1526 		txdidx = prod;
1527 		txd->tx_flags = TX_FLAGS_TYPE_DATA;
1528 		txd->tx_numdesc = 0;
1529 		txd->tx_addrlo = txp_txd_idx(sc, sd);
1530 		txd->tx_addrhi = 0;
1531 		txd->tx_totlen = m->m_pkthdr.len;
1532 		txd->tx_pflags = 0;
1533 		txd->tx_numdesc = sd->sd_map->dm_nsegs;
1534 
1535 		if (++prod == TX_ENTRIES)
1536 			prod = 0;
1537 		cnt++;
1538 
1539 		if (vlan_has_tag(m))
1540 			txd->tx_pflags = TX_PFLAGS_VLAN |
1541 			  (htons(vlan_get_tag(m)) << TX_PFLAGS_VLANTAG_S);
1542 
1543 		if (m->m_pkthdr.csum_flags & M_CSUM_IPv4)
1544 			txd->tx_pflags |= TX_PFLAGS_IPCKSUM;
1545 #ifdef TRY_TX_TCP_CSUM
1546 		if (m->m_pkthdr.csum_flags & M_CSUM_TCPv4)
1547 			txd->tx_pflags |= TX_PFLAGS_TCPCKSUM;
1548 #endif
1549 #ifdef TRY_TX_UDP_CSUM
1550 		if (m->m_pkthdr.csum_flags & M_CSUM_UDPv4)
1551 			txd->tx_pflags |= TX_PFLAGS_UDPCKSUM;
1552 #endif
1553 
1554 		bus_dmamap_sync(sc->sc_dmat, sd->sd_map, 0,
1555 		    sd->sd_map->dm_mapsize, BUS_DMASYNC_PREWRITE);
1556 
1557 		fxd = (struct txp_frag_desc *)(r->r_desc + prod);
1558 		for (i = 0; i < sd->sd_map->dm_nsegs; i++) {
1559 			fxd->frag_flags = FRAG_FLAGS_TYPE_FRAG |
1560 			    FRAG_FLAGS_VALID;
1561 			fxd->frag_rsvd1 = 0;
1562 			fxd->frag_len = htole16(sd->sd_map->dm_segs[i].ds_len);
1563 			fxd->frag_addrlo =
1564 			    htole32(BUS_ADDR_LO32(sd->sd_map->dm_segs[i].ds_addr));
1565 			fxd->frag_addrhi =
1566 			    htole32(BUS_ADDR_HI32(sd->sd_map->dm_segs[i].ds_addr));
1567 			fxd->frag_rsvd2 = 0;
1568 
1569 			bus_dmamap_sync(sc->sc_dmat,
1570 			    sc->sc_txhiring_dma.dma_map,
1571 			    prod * sizeof(struct txp_frag_desc),
1572 			    sizeof(struct txp_frag_desc), BUS_DMASYNC_PREWRITE);
1573 
1574 			if (++prod == TX_ENTRIES) {
1575 				fxd = (struct txp_frag_desc *)r->r_desc;
1576 				prod = 0;
1577 			} else
1578 				fxd++;
1579 			cnt++;
1580 		}
1581 
1582 		ifp->if_timer = 5;
1583 
1584 		bpf_mtap(ifp, m, BPF_D_OUT);
1585 
1586 		txd->tx_flags |= TX_FLAGS_VALID;
1587 		bus_dmamap_sync(sc->sc_dmat, sc->sc_txhiring_dma.dma_map,
1588 		    txdidx * sizeof(struct txp_tx_desc),
1589 		    sizeof(struct txp_tx_desc), BUS_DMASYNC_PREWRITE);
1590 
1591 #if 0
1592 		{
1593 			struct mbuf *mx;
1594 			int i;
1595 
1596 			printf("txd: flags 0x%x ndesc %d totlen %d pflags 0x%x\n",
1597 			    txd->tx_flags, txd->tx_numdesc, txd->tx_totlen,
1598 			    txd->tx_pflags);
1599 			for (mx = m; mx != NULL; mx = mx->m_next) {
1600 				for (i = 0; i < mx->m_len; i++) {
1601 					printf(":%02x",
1602 					    (uint8_t)m->m_data[i]);
1603 				}
1604 			}
1605 			printf("\n");
1606 		}
1607 #endif
1608 
1609 		WRITE_REG(sc, r->r_reg, TXP_IDX2OFFSET(prod));
1610 	}
1611 
1612 	r->r_prod = prod;
1613 	r->r_cnt = cnt;
1614 }
1615 
1616 /*
1617  * Handle simple commands sent to the typhoon
1618  */
1619 static int
1620 txp_command(struct txp_softc *sc, uint16_t id, uint16_t in1, uint32_t in2,
1621     uint32_t in3, uint16_t *out1, uint32_t *out2, uint32_t *out3, int wait)
1622 {
1623 	struct txp_rsp_desc *rsp = NULL;
1624 
1625 	if (txp_command2(sc, id, in1, in2, in3, NULL, 0, &rsp, wait))
1626 		return (-1);
1627 
1628 	if (!wait)
1629 		return (0);
1630 
1631 	if (out1 != NULL)
1632 		*out1 = le16toh(rsp->rsp_par1);
1633 	if (out2 != NULL)
1634 		*out2 = le32toh(rsp->rsp_par2);
1635 	if (out3 != NULL)
1636 		*out3 = le32toh(rsp->rsp_par3);
1637 	free(rsp, M_DEVBUF);
1638 	return (0);
1639 }
1640 
1641 static int
1642 txp_command2(struct txp_softc *sc, uint16_t id, uint16_t in1, uint32_t in2,
1643     uint32_t in3, struct txp_ext_desc *in_extp, uint8_t in_extn,
1644     struct txp_rsp_desc **rspp, int wait)
1645 {
1646 	struct txp_hostvar *hv = sc->sc_hostvar;
1647 	struct txp_cmd_desc *cmd;
1648 	struct txp_ext_desc *ext;
1649 	uint32_t idx, i;
1650 	uint16_t seq;
1651 
1652 	if (txp_cmd_desc_numfree(sc) < (in_extn + 1)) {
1653 		printf("%s: no free cmd descriptors\n", TXP_DEVNAME(sc));
1654 		return (-1);
1655 	}
1656 
1657 	idx = sc->sc_cmdring.lastwrite;
1658 	cmd = (struct txp_cmd_desc *)(((uint8_t *)sc->sc_cmdring.base) + idx);
1659 	memset(cmd, 0, sizeof(*cmd));
1660 
1661 	cmd->cmd_numdesc = in_extn;
1662 	seq = sc->sc_seq++;
1663 	cmd->cmd_seq = htole16(seq);
1664 	cmd->cmd_id = htole16(id);
1665 	cmd->cmd_par1 = htole16(in1);
1666 	cmd->cmd_par2 = htole32(in2);
1667 	cmd->cmd_par3 = htole32(in3);
1668 	cmd->cmd_flags = CMD_FLAGS_TYPE_CMD |
1669 	    (wait ? CMD_FLAGS_RESP : 0) | CMD_FLAGS_VALID;
1670 
1671 	idx += sizeof(struct txp_cmd_desc);
1672 	if (idx == sc->sc_cmdring.size)
1673 		idx = 0;
1674 
1675 	for (i = 0; i < in_extn; i++) {
1676 		ext = (struct txp_ext_desc *)(((uint8_t *)sc->sc_cmdring.base) + idx);
1677 		memcpy(ext, in_extp, sizeof(struct txp_ext_desc));
1678 		in_extp++;
1679 		idx += sizeof(struct txp_cmd_desc);
1680 		if (idx == sc->sc_cmdring.size)
1681 			idx = 0;
1682 	}
1683 
1684 	sc->sc_cmdring.lastwrite = idx;
1685 
1686 	WRITE_REG(sc, TXP_H2A_2, sc->sc_cmdring.lastwrite);
1687 	bus_dmamap_sync(sc->sc_dmat, sc->sc_host_dma.dma_map, 0,
1688 	    sizeof(struct txp_hostvar), BUS_DMASYNC_PREREAD);
1689 
1690 	if (!wait)
1691 		return (0);
1692 
1693 	for (i = 0; i < 10000; i++) {
1694 		bus_dmamap_sync(sc->sc_dmat, sc->sc_host_dma.dma_map, 0,
1695 		    sizeof(struct txp_hostvar), BUS_DMASYNC_POSTREAD);
1696 		idx = le32toh(hv->hv_resp_read_idx);
1697 		if (idx != le32toh(hv->hv_resp_write_idx)) {
1698 			*rspp = NULL;
1699 			if (txp_response(sc, idx, id, seq, rspp))
1700 				return (-1);
1701 			if (*rspp != NULL)
1702 				break;
1703 		}
1704 		bus_dmamap_sync(sc->sc_dmat, sc->sc_host_dma.dma_map, 0,
1705 		    sizeof(struct txp_hostvar), BUS_DMASYNC_PREREAD);
1706 		DELAY(50);
1707 	}
1708 	if (i == 1000 || (*rspp) == NULL) {
1709 		printf("%s: 0x%x command failed\n", TXP_DEVNAME(sc), id);
1710 		return (-1);
1711 	}
1712 
1713 	return (0);
1714 }
1715 
1716 static int
1717 txp_response(struct txp_softc *sc, uint32_t ridx, uint16_t id, uint16_t seq,
1718     struct txp_rsp_desc **rspp)
1719 {
1720 	struct txp_hostvar *hv = sc->sc_hostvar;
1721 	struct txp_rsp_desc *rsp;
1722 
1723 	while (ridx != le32toh(hv->hv_resp_write_idx)) {
1724 		rsp = (struct txp_rsp_desc *)(((uint8_t *)sc->sc_rspring.base) + ridx);
1725 
1726 		if (id == le16toh(rsp->rsp_id) && le16toh(rsp->rsp_seq) == seq) {
1727 			*rspp = (struct txp_rsp_desc *)malloc(
1728 			    sizeof(struct txp_rsp_desc) * (rsp->rsp_numdesc + 1),
1729 			    M_DEVBUF, M_NOWAIT);
1730 			if ((*rspp) == NULL)
1731 				return (-1);
1732 			txp_rsp_fixup(sc, rsp, *rspp);
1733 			return (0);
1734 		}
1735 
1736 		if (rsp->rsp_flags & RSP_FLAGS_ERROR) {
1737 			printf("%s: response error: id 0x%x\n",
1738 			    TXP_DEVNAME(sc), le16toh(rsp->rsp_id));
1739 			txp_rsp_fixup(sc, rsp, NULL);
1740 			ridx = le32toh(hv->hv_resp_read_idx);
1741 			continue;
1742 		}
1743 
1744 		switch (le16toh(rsp->rsp_id)) {
1745 		case TXP_CMD_CYCLE_STATISTICS:
1746 		case TXP_CMD_MEDIA_STATUS_READ:
1747 			break;
1748 		case TXP_CMD_HELLO_RESPONSE:
1749 			printf("%s: hello\n", TXP_DEVNAME(sc));
1750 			break;
1751 		default:
1752 			printf("%s: unknown id(0x%x)\n", TXP_DEVNAME(sc),
1753 			    le16toh(rsp->rsp_id));
1754 		}
1755 
1756 		txp_rsp_fixup(sc, rsp, NULL);
1757 		ridx = le32toh(hv->hv_resp_read_idx);
1758 		hv->hv_resp_read_idx = le32toh(ridx);
1759 	}
1760 
1761 	return (0);
1762 }
1763 
1764 static void
1765 txp_rsp_fixup(struct txp_softc *sc, struct txp_rsp_desc *rsp,
1766     struct txp_rsp_desc *dst)
1767 {
1768 	struct txp_rsp_desc *src = rsp;
1769 	struct txp_hostvar *hv = sc->sc_hostvar;
1770 	uint32_t i, ridx;
1771 
1772 	ridx = le32toh(hv->hv_resp_read_idx);
1773 
1774 	for (i = 0; i < rsp->rsp_numdesc + 1; i++) {
1775 		if (dst != NULL)
1776 			memcpy(dst++, src, sizeof(struct txp_rsp_desc));
1777 		ridx += sizeof(struct txp_rsp_desc);
1778 		if (ridx == sc->sc_rspring.size) {
1779 			src = sc->sc_rspring.base;
1780 			ridx = 0;
1781 		} else
1782 			src++;
1783 		sc->sc_rspring.lastwrite = ridx;
1784 		hv->hv_resp_read_idx = htole32(ridx);
1785 	}
1786 
1787 	hv->hv_resp_read_idx = htole32(ridx);
1788 }
1789 
1790 static int
1791 txp_cmd_desc_numfree(struct txp_softc *sc)
1792 {
1793 	struct txp_hostvar *hv = sc->sc_hostvar;
1794 	struct txp_boot_record *br = sc->sc_boot;
1795 	uint32_t widx, ridx, nfree;
1796 
1797 	widx = sc->sc_cmdring.lastwrite;
1798 	ridx = le32toh(hv->hv_cmd_read_idx);
1799 
1800 	if (widx == ridx) {
1801 		/* Ring is completely free */
1802 		nfree = le32toh(br->br_cmd_siz) - sizeof(struct txp_cmd_desc);
1803 	} else {
1804 		if (widx > ridx)
1805 			nfree = le32toh(br->br_cmd_siz) -
1806 			    (widx - ridx + sizeof(struct txp_cmd_desc));
1807 		else
1808 			nfree = ridx - widx - sizeof(struct txp_cmd_desc);
1809 	}
1810 
1811 	return (nfree / sizeof(struct txp_cmd_desc));
1812 }
1813 
1814 static void
1815 txp_stop(struct txp_softc *sc)
1816 {
1817 	txp_command(sc, TXP_CMD_TX_DISABLE, 0, 0, 0, NULL, NULL, NULL, 1);
1818 	txp_command(sc, TXP_CMD_RX_DISABLE, 0, 0, 0, NULL, NULL, NULL, 1);
1819 
1820 	if (callout_pending(&sc->sc_tick))
1821 		callout_stop(&sc->sc_tick);
1822 }
1823 
1824 static void
1825 txp_watchdog(struct ifnet *ifp)
1826 {
1827 }
1828 
1829 static int
1830 txp_ifmedia_upd(struct ifnet *ifp)
1831 {
1832 	struct txp_softc *sc = ifp->if_softc;
1833 	struct ifmedia *ifm = &sc->sc_ifmedia;
1834 	uint16_t new_xcvr;
1835 
1836 	if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
1837 		return (EINVAL);
1838 
1839 	if (IFM_SUBTYPE(ifm->ifm_media) == IFM_10_T) {
1840 		if ((ifm->ifm_media & IFM_FDX) != 0)
1841 			new_xcvr = TXP_XCVR_10_FDX;
1842 		else
1843 			new_xcvr = TXP_XCVR_10_HDX;
1844 	} else if ((IFM_SUBTYPE(ifm->ifm_media) == IFM_100_TX) ||
1845 		   (IFM_SUBTYPE(ifm->ifm_media) == IFM_100_FX)) {
1846 		if ((ifm->ifm_media & IFM_FDX) != 0)
1847 			new_xcvr = TXP_XCVR_100_FDX;
1848 		else
1849 			new_xcvr = TXP_XCVR_100_HDX;
1850 	} else if (IFM_SUBTYPE(ifm->ifm_media) == IFM_AUTO) {
1851 		new_xcvr = TXP_XCVR_AUTO;
1852 	} else
1853 		return (EINVAL);
1854 
1855 	/* nothing to do */
1856 	if (sc->sc_xcvr == new_xcvr)
1857 		return (0);
1858 
1859 	txp_command(sc, TXP_CMD_XCVR_SELECT, new_xcvr, 0, 0,
1860 	    NULL, NULL, NULL, 0);
1861 	sc->sc_xcvr = new_xcvr;
1862 
1863 	return (0);
1864 }
1865 
1866 static void
1867 txp_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
1868 {
1869 	struct txp_softc *sc = ifp->if_softc;
1870 	struct ifmedia *ifm = &sc->sc_ifmedia;
1871 	uint16_t bmsr, bmcr, anlpar;
1872 
1873 	ifmr->ifm_status = IFM_AVALID;
1874 	ifmr->ifm_active = IFM_ETHER;
1875 
1876 	if (txp_command(sc, TXP_CMD_PHY_MGMT_READ, 0, MII_BMSR, 0,
1877 	    &bmsr, NULL, NULL, 1))
1878 		goto bail;
1879 	if (txp_command(sc, TXP_CMD_PHY_MGMT_READ, 0, MII_BMSR, 0,
1880 	    &bmsr, NULL, NULL, 1))
1881 		goto bail;
1882 
1883 	if (txp_command(sc, TXP_CMD_PHY_MGMT_READ, 0, MII_BMCR, 0,
1884 	    &bmcr, NULL, NULL, 1))
1885 		goto bail;
1886 
1887 	if (txp_command(sc, TXP_CMD_PHY_MGMT_READ, 0, MII_ANLPAR, 0,
1888 	    &anlpar, NULL, NULL, 1))
1889 		goto bail;
1890 
1891 	if (bmsr & BMSR_LINK)
1892 		ifmr->ifm_status |= IFM_ACTIVE;
1893 
1894 	if (bmcr & BMCR_ISO) {
1895 		ifmr->ifm_active |= IFM_NONE;
1896 		ifmr->ifm_status = 0;
1897 		return;
1898 	}
1899 
1900 	if (bmcr & BMCR_LOOP)
1901 		ifmr->ifm_active |= IFM_LOOP;
1902 
1903 	if (!(sc->sc_flags & TXP_FIBER) && (bmcr & BMCR_AUTOEN)) {
1904 		if ((bmsr & BMSR_ACOMP) == 0) {
1905 			ifmr->ifm_active |= IFM_NONE;
1906 			return;
1907 		}
1908 
1909 		if (anlpar & ANLPAR_TX_FD)
1910 			ifmr->ifm_active |= IFM_100_TX | IFM_FDX;
1911 		else if (anlpar & ANLPAR_T4)
1912 			ifmr->ifm_active |= IFM_100_T4 | IFM_HDX;
1913 		else if (anlpar & ANLPAR_TX)
1914 			ifmr->ifm_active |= IFM_100_TX | IFM_HDX;
1915 		else if (anlpar & ANLPAR_10_FD)
1916 			ifmr->ifm_active |= IFM_10_T | IFM_FDX;
1917 		else if (anlpar & ANLPAR_10)
1918 			ifmr->ifm_active |= IFM_10_T | IFM_HDX;
1919 		else
1920 			ifmr->ifm_active |= IFM_NONE;
1921 	} else
1922 		ifmr->ifm_active = ifm->ifm_cur->ifm_media;
1923 	return;
1924 
1925 bail:
1926 	ifmr->ifm_active |= IFM_NONE;
1927 	ifmr->ifm_status &= ~IFM_AVALID;
1928 }
1929 
1930 #if 0 /* XXX XXX XXX UNUSED */
1931 static void
1932 txp_show_descriptor(void *d)
1933 {
1934 	struct txp_cmd_desc *cmd = d;
1935 	struct txp_rsp_desc *rsp = d;
1936 	struct txp_tx_desc *txd = d;
1937 	struct txp_frag_desc *frgd = d;
1938 
1939 	switch (cmd->cmd_flags & CMD_FLAGS_TYPE_M) {
1940 	case CMD_FLAGS_TYPE_CMD:
1941 		/* command descriptor */
1942 		printf("[cmd flags 0x%x num %d id %d seq %d par1 0x%x par2 "
1943 		    "0x%x par3 0x%x]\n",
1944 		    cmd->cmd_flags, cmd->cmd_numdesc, le16toh(cmd->cmd_id),
1945 		    le16toh(cmd->cmd_seq), le16toh(cmd->cmd_par1),
1946 		    le32toh(cmd->cmd_par2), le32toh(cmd->cmd_par3));
1947 		break;
1948 	case CMD_FLAGS_TYPE_RESP:
1949 		/* response descriptor */
1950 		printf("[rsp flags 0x%x num %d id %d seq %d par1 0x%x par2 "
1951 		    "0x%x par3 0x%x]\n",
1952 		    rsp->rsp_flags, rsp->rsp_numdesc, le16toh(rsp->rsp_id),
1953 		    le16toh(rsp->rsp_seq), le16toh(rsp->rsp_par1),
1954 		    le32toh(rsp->rsp_par2), le32toh(rsp->rsp_par3));
1955 		break;
1956 	case CMD_FLAGS_TYPE_DATA:
1957 		/* data header (assuming tx for now) */
1958 		printf("[data flags 0x%x num %d totlen %d addr 0x%x/0x%x "
1959 		    "pflags 0x%x]",
1960 		    txd->tx_flags, txd->tx_numdesc, txd->tx_totlen,
1961 		    txd->tx_addrlo, txd->tx_addrhi, txd->tx_pflags);
1962 		break;
1963 	case CMD_FLAGS_TYPE_FRAG:
1964 		/* fragment descriptor */
1965 		printf("[frag flags 0x%x rsvd1 0x%x len %d addr 0x%x/0x%x "
1966 		    "rsvd2 0x%x]",
1967 		    frgd->frag_flags, frgd->frag_rsvd1, frgd->frag_len,
1968 		    frgd->frag_addrlo, frgd->frag_addrhi, frgd->frag_rsvd2);
1969 		break;
1970 	default:
1971 		printf("[unknown(%x) flags 0x%x num %d id %d seq %d par1 "
1972 		    "0x%x par2 0x%x par3 0x%x]\n",
1973 		    cmd->cmd_flags & CMD_FLAGS_TYPE_M,
1974 		    cmd->cmd_flags, cmd->cmd_numdesc, le16toh(cmd->cmd_id),
1975 		    le16toh(cmd->cmd_seq), le16toh(cmd->cmd_par1),
1976 		    le32toh(cmd->cmd_par2), le32toh(cmd->cmd_par3));
1977 		break;
1978 	}
1979 }
1980 #endif
1981 
1982 static void
1983 txp_set_filter(struct txp_softc *sc)
1984 {
1985 	struct ethercom *ec = &sc->sc_arpcom;
1986 	struct ifnet *ifp = &sc->sc_arpcom.ec_if;
1987 	uint32_t crc, carry, hashbit, hash[2];
1988 	uint16_t filter;
1989 	uint8_t octet;
1990 	int i, j, mcnt = 0;
1991 	struct ether_multi *enm;
1992 	struct ether_multistep step;
1993 
1994 	if (ifp->if_flags & IFF_PROMISC) {
1995 		filter = TXP_RXFILT_PROMISC;
1996 		goto setit;
1997 	}
1998 
1999 again:
2000 	filter = TXP_RXFILT_DIRECT;
2001 
2002 	if (ifp->if_flags & IFF_BROADCAST)
2003 		filter |= TXP_RXFILT_BROADCAST;
2004 
2005 	if (ifp->if_flags & IFF_ALLMULTI)
2006 		filter |= TXP_RXFILT_ALLMULTI;
2007 	else {
2008 		hash[0] = hash[1] = 0;
2009 
2010 		ETHER_LOCK(ec);
2011 		ETHER_FIRST_MULTI(step, ec, enm);
2012 		while (enm != NULL) {
2013 			if (memcmp(enm->enm_addrlo, enm->enm_addrhi,
2014 			    ETHER_ADDR_LEN)) {
2015 				/*
2016 				 * We must listen to a range of multicast
2017 				 * addresses.  For now, just accept all
2018 				 * multicasts, rather than trying to set only
2019 				 * those filter bits needed to match the range.
2020 				 * (At this time, the only use of address
2021 				 * ranges is for IP multicast routing, for
2022 				 * which the range is big enough to require
2023 				 * all bits set.)
2024 				 */
2025 				ifp->if_flags |= IFF_ALLMULTI;
2026 				ETHER_UNLOCK(ec);
2027 				goto again;
2028 			}
2029 
2030 			mcnt++;
2031 			crc = 0xffffffff;
2032 
2033 			for (i = 0; i < ETHER_ADDR_LEN; i++) {
2034 				octet = enm->enm_addrlo[i];
2035 				for (j = 0; j < 8; j++) {
2036 					carry = ((crc & 0x80000000) ? 1 : 0) ^
2037 					    (octet & 1);
2038 					crc <<= 1;
2039 					octet >>= 1;
2040 					if (carry)
2041 						crc = (crc ^ TXP_POLYNOMIAL) |
2042 						    carry;
2043 				}
2044 			}
2045 			hashbit = (uint16_t)(crc & (64 - 1));
2046 			hash[hashbit / 32] |= (1 << hashbit % 32);
2047 			ETHER_NEXT_MULTI(step, enm);
2048 		}
2049 		ETHER_UNLOCK(ec);
2050 
2051 		if (mcnt > 0) {
2052 			filter |= TXP_RXFILT_HASHMULTI;
2053 			txp_command(sc, TXP_CMD_MCAST_HASH_MASK_WRITE,
2054 			    2, hash[0], hash[1], NULL, NULL, NULL, 0);
2055 		}
2056 	}
2057 
2058 setit:
2059 	txp_command(sc, TXP_CMD_RX_FILTER_WRITE, filter, 0, 0,
2060 	    NULL, NULL, NULL, 1);
2061 }
2062 
2063 static void
2064 txp_capabilities(struct txp_softc *sc)
2065 {
2066 	struct ifnet *ifp = &sc->sc_arpcom.ec_if;
2067 	struct txp_rsp_desc *rsp = NULL;
2068 	struct txp_ext_desc *ext;
2069 
2070 	if (txp_command2(sc, TXP_CMD_OFFLOAD_READ, 0, 0, 0, NULL, 0, &rsp, 1))
2071 		goto out;
2072 
2073 	if (rsp->rsp_numdesc != 1)
2074 		goto out;
2075 	ext = (struct txp_ext_desc *)(rsp + 1);
2076 
2077 	sc->sc_tx_capability = ext->ext_1 & OFFLOAD_MASK;
2078 	sc->sc_rx_capability = ext->ext_2 & OFFLOAD_MASK;
2079 
2080 	sc->sc_arpcom.ec_capabilities |= ETHERCAP_VLAN_MTU;
2081 	if (rsp->rsp_par2 & rsp->rsp_par3 & OFFLOAD_VLAN) {
2082 		sc->sc_tx_capability |= OFFLOAD_VLAN;
2083 		sc->sc_rx_capability |= OFFLOAD_VLAN;
2084 		sc->sc_arpcom.ec_capabilities |= ETHERCAP_VLAN_HWTAGGING;
2085 		sc->sc_arpcom.ec_capenable |= ETHERCAP_VLAN_HWTAGGING;
2086 	}
2087 
2088 #if 0
2089 	/* not ready yet */
2090 	if (rsp->rsp_par2 & rsp->rsp_par3 & OFFLOAD_IPSEC) {
2091 		sc->sc_tx_capability |= OFFLOAD_IPSEC;
2092 		sc->sc_rx_capability |= OFFLOAD_IPSEC;
2093 		ifp->if_capabilities |= IFCAP_IPSEC;
2094 	}
2095 #endif
2096 
2097 	if (rsp->rsp_par2 & rsp->rsp_par3 & OFFLOAD_IPCKSUM) {
2098 		sc->sc_tx_capability |= OFFLOAD_IPCKSUM;
2099 		sc->sc_rx_capability |= OFFLOAD_IPCKSUM;
2100 		ifp->if_capabilities |= IFCAP_CSUM_IPv4_Tx | IFCAP_CSUM_IPv4_Rx;
2101 	}
2102 
2103 	if (rsp->rsp_par2 & rsp->rsp_par3 & OFFLOAD_TCPCKSUM) {
2104 		sc->sc_rx_capability |= OFFLOAD_TCPCKSUM;
2105 #ifdef TRY_TX_TCP_CSUM
2106 		sc->sc_tx_capability |= OFFLOAD_TCPCKSUM;
2107 		ifp->if_capabilities |=
2108 		    IFCAP_CSUM_TCPv4_Tx | IFCAP_CSUM_TCPv4_Rx;
2109 #endif
2110 	}
2111 
2112 	if (rsp->rsp_par2 & rsp->rsp_par3 & OFFLOAD_UDPCKSUM) {
2113 		sc->sc_rx_capability |= OFFLOAD_UDPCKSUM;
2114 #ifdef TRY_TX_UDP_CSUM
2115 		sc->sc_tx_capability |= OFFLOAD_UDPCKSUM;
2116 		ifp->if_capabilities |=
2117 		    IFCAP_CSUM_UDPv4_Tx | IFCAP_CSUM_UDPv4_Rx;
2118 #endif
2119 	}
2120 
2121 	if (txp_command(sc, TXP_CMD_OFFLOAD_WRITE, 0,
2122 	    sc->sc_tx_capability, sc->sc_rx_capability, NULL, NULL, NULL, 1))
2123 		goto out;
2124 
2125 out:
2126 	if (rsp != NULL)
2127 		free(rsp, M_DEVBUF);
2128 }
2129