6184149e20cd96a73a0ae615f046161ac1a9d79d
[dragonfly.git] / sys / dev / netif / bge / if_bge.c
1 /*
2  * Copyright (c) 2001 Wind River Systems
3  * Copyright (c) 1997, 1998, 1999, 2001
4  *      Bill Paul <wpaul@windriver.com>.  All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  * 3. All advertising materials mentioning features or use of this software
15  *    must display the following acknowledgement:
16  *      This product includes software developed by Bill Paul.
17  * 4. Neither the name of the author nor the names of any co-contributors
18  *    may be used to endorse or promote products derived from this software
19  *    without specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24  * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
25  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
31  * THE POSSIBILITY OF SUCH DAMAGE.
32  *
33  * $FreeBSD: src/sys/dev/bge/if_bge.c,v 1.3.2.39 2005/07/03 03:41:18 silby Exp $
34  */
35
36 /*
37  * Broadcom BCM570x family gigabit ethernet driver for FreeBSD.
38  * 
39  * Written by Bill Paul <wpaul@windriver.com>
40  * Senior Engineer, Wind River Systems
41  */
42
43 /*
44  * The Broadcom BCM5700 is based on technology originally developed by
45  * Alteon Networks as part of the Tigon I and Tigon II gigabit ethernet
46  * MAC chips. The BCM5700, sometimes refered to as the Tigon III, has
47  * two on-board MIPS R4000 CPUs and can have as much as 16MB of external
48  * SSRAM. The BCM5700 supports TCP, UDP and IP checksum offload, jumbo
49  * frames, highly configurable RX filtering, and 16 RX and TX queues
50  * (which, along with RX filter rules, can be used for QOS applications).
51  * Other features, such as TCP segmentation, may be available as part
52  * of value-added firmware updates. Unlike the Tigon I and Tigon II,
53  * firmware images can be stored in hardware and need not be compiled
54  * into the driver.
55  *
56  * The BCM5700 supports the PCI v2.2 and PCI-X v1.0 standards, and will
57  * function in a 32-bit/64-bit 33/66Mhz bus, or a 64-bit/133Mhz bus.
58  * 
59  * The BCM5701 is a single-chip solution incorporating both the BCM5700
60  * MAC and a BCM5401 10/100/1000 PHY. Unlike the BCM5700, the BCM5701
61  * does not support external SSRAM.
62  *
63  * Broadcom also produces a variation of the BCM5700 under the "Altima"
64  * brand name, which is functionally similar but lacks PCI-X support.
65  *
66  * Without external SSRAM, you can only have at most 4 TX rings,
67  * and the use of the mini RX ring is disabled. This seems to imply
68  * that these features are simply not available on the BCM5701. As a
69  * result, this driver does not implement any support for the mini RX
70  * ring.
71  */
72
73 #include "opt_polling.h"
74
75 #include <sys/param.h>
76 #include <sys/bus.h>
77 #include <sys/endian.h>
78 #include <sys/kernel.h>
79 #include <sys/ktr.h>
80 #include <sys/interrupt.h>
81 #include <sys/mbuf.h>
82 #include <sys/malloc.h>
83 #include <sys/queue.h>
84 #include <sys/rman.h>
85 #include <sys/serialize.h>
86 #include <sys/socket.h>
87 #include <sys/sockio.h>
88 #include <sys/sysctl.h>
89
90 #include <net/bpf.h>
91 #include <net/ethernet.h>
92 #include <net/if.h>
93 #include <net/if_arp.h>
94 #include <net/if_dl.h>
95 #include <net/if_media.h>
96 #include <net/if_types.h>
97 #include <net/ifq_var.h>
98 #include <net/vlan/if_vlan_var.h>
99 #include <net/vlan/if_vlan_ether.h>
100
101 #include <dev/netif/mii_layer/mii.h>
102 #include <dev/netif/mii_layer/miivar.h>
103 #include <dev/netif/mii_layer/brgphyreg.h>
104
105 #include <bus/pci/pcidevs.h>
106 #include <bus/pci/pcireg.h>
107 #include <bus/pci/pcivar.h>
108
109 #include <dev/netif/bge/if_bgereg.h>
110
111 /* "device miibus" required.  See GENERIC if you get errors here. */
112 #include "miibus_if.h"
113
114 #define BGE_CSUM_FEATURES       (CSUM_IP | CSUM_TCP)
115 #define BGE_MIN_FRAME           60
116
117 static const struct bge_type bge_devs[] = {
118         { PCI_VENDOR_3COM, PCI_PRODUCT_3COM_3C996,
119                 "3COM 3C996 Gigabit Ethernet" },
120
121         { PCI_VENDOR_ALTEON, PCI_PRODUCT_ALTEON_BCM5700,
122                 "Alteon BCM5700 Gigabit Ethernet" },
123         { PCI_VENDOR_ALTEON, PCI_PRODUCT_ALTEON_BCM5701,
124                 "Alteon BCM5701 Gigabit Ethernet" },
125
126         { PCI_VENDOR_ALTIMA, PCI_PRODUCT_ALTIMA_AC1000,
127                 "Altima AC1000 Gigabit Ethernet" },
128         { PCI_VENDOR_ALTIMA, PCI_PRODUCT_ALTIMA_AC1001,
129                 "Altima AC1002 Gigabit Ethernet" },
130         { PCI_VENDOR_ALTIMA, PCI_PRODUCT_ALTIMA_AC9100,
131                 "Altima AC9100 Gigabit Ethernet" },
132
133         { PCI_VENDOR_APPLE, PCI_PRODUCT_APPLE_BCM5701,
134                 "Apple BCM5701 Gigabit Ethernet" },
135
136         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5700,
137                 "Broadcom BCM5700 Gigabit Ethernet" },
138         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5701,
139                 "Broadcom BCM5701 Gigabit Ethernet" },
140         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5702,
141                 "Broadcom BCM5702 Gigabit Ethernet" },
142         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5702X,
143                 "Broadcom BCM5702X Gigabit Ethernet" },
144         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5702_ALT,
145                 "Broadcom BCM5702 Gigabit Ethernet" },
146         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5703,
147                 "Broadcom BCM5703 Gigabit Ethernet" },
148         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5703X,
149                 "Broadcom BCM5703X Gigabit Ethernet" },
150         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5703A3,
151                 "Broadcom BCM5703 Gigabit Ethernet" },
152         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5704C,
153                 "Broadcom BCM5704C Dual Gigabit Ethernet" },
154         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5704S,
155                 "Broadcom BCM5704S Dual Gigabit Ethernet" },
156         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5704S_ALT,
157                 "Broadcom BCM5704S Dual Gigabit Ethernet" },
158         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5705,
159                 "Broadcom BCM5705 Gigabit Ethernet" },
160         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5705F,
161                 "Broadcom BCM5705F Gigabit Ethernet" },
162         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5705K,
163                 "Broadcom BCM5705K Gigabit Ethernet" },
164         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5705M,
165                 "Broadcom BCM5705M Gigabit Ethernet" },
166         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5705M_ALT,
167                 "Broadcom BCM5705M Gigabit Ethernet" },
168         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5714,
169                 "Broadcom BCM5714C Gigabit Ethernet" },
170         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5714S,
171                 "Broadcom BCM5714S Gigabit Ethernet" },
172         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5715,
173                 "Broadcom BCM5715 Gigabit Ethernet" },
174         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5715S,
175                 "Broadcom BCM5715S Gigabit Ethernet" },
176         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5720,
177                 "Broadcom BCM5720 Gigabit Ethernet" },
178         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5721,
179                 "Broadcom BCM5721 Gigabit Ethernet" },
180         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5722,
181                 "Broadcom BCM5722 Gigabit Ethernet" },
182         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5723,
183                 "Broadcom BCM5723 Gigabit Ethernet" },
184         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5750,
185                 "Broadcom BCM5750 Gigabit Ethernet" },
186         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5750M,
187                 "Broadcom BCM5750M Gigabit Ethernet" },
188         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5751,
189                 "Broadcom BCM5751 Gigabit Ethernet" },
190         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5751F,
191                 "Broadcom BCM5751F Gigabit Ethernet" },
192         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5751M,
193                 "Broadcom BCM5751M Gigabit Ethernet" },
194         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5752,
195                 "Broadcom BCM5752 Gigabit Ethernet" },
196         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5752M,
197                 "Broadcom BCM5752M Gigabit Ethernet" },
198         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5753,
199                 "Broadcom BCM5753 Gigabit Ethernet" },
200         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5753F,
201                 "Broadcom BCM5753F Gigabit Ethernet" },
202         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5753M,
203                 "Broadcom BCM5753M Gigabit Ethernet" },
204         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5754,
205                 "Broadcom BCM5754 Gigabit Ethernet" },
206         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5754M,
207                 "Broadcom BCM5754M Gigabit Ethernet" },
208         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5755,
209                 "Broadcom BCM5755 Gigabit Ethernet" },
210         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5755M,
211                 "Broadcom BCM5755M Gigabit Ethernet" },
212         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5756,
213                 "Broadcom BCM5756 Gigabit Ethernet" },
214         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5761,
215                 "Broadcom BCM5761 Gigabit Ethernet" },
216         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5761E,
217                 "Broadcom BCM5761E Gigabit Ethernet" },
218         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5761S,
219                 "Broadcom BCM5761S Gigabit Ethernet" },
220         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5761SE,
221                 "Broadcom BCM5761SE Gigabit Ethernet" },
222         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5764,
223                 "Broadcom BCM5764 Gigabit Ethernet" },
224         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5780,
225                 "Broadcom BCM5780 Gigabit Ethernet" },
226         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5780S,
227                 "Broadcom BCM5780S Gigabit Ethernet" },
228         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5781,
229                 "Broadcom BCM5781 Gigabit Ethernet" },
230         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5782,
231                 "Broadcom BCM5782 Gigabit Ethernet" },
232         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5784,
233                 "Broadcom BCM5784 Gigabit Ethernet" },
234         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5785F,
235                 "Broadcom BCM5785F Gigabit Ethernet" },
236         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5785G,
237                 "Broadcom BCM5785G Gigabit Ethernet" },
238         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5786,
239                 "Broadcom BCM5786 Gigabit Ethernet" },
240         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5787,
241                 "Broadcom BCM5787 Gigabit Ethernet" },
242         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5787F,
243                 "Broadcom BCM5787F Gigabit Ethernet" },
244         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5787M,
245                 "Broadcom BCM5787M Gigabit Ethernet" },
246         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5788,
247                 "Broadcom BCM5788 Gigabit Ethernet" },
248         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5789,
249                 "Broadcom BCM5789 Gigabit Ethernet" },
250         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5901,
251                 "Broadcom BCM5901 Fast Ethernet" },
252         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5901A2,
253                 "Broadcom BCM5901A2 Fast Ethernet" },
254         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5903M,
255                 "Broadcom BCM5903M Fast Ethernet" },
256         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5906,
257                 "Broadcom BCM5906 Fast Ethernet"},
258         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5906M,
259                 "Broadcom BCM5906M Fast Ethernet"},
260         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57760,
261                 "Broadcom BCM57760 Gigabit Ethernet"},
262         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57780,
263                 "Broadcom BCM57780 Gigabit Ethernet"},
264         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57788,
265                 "Broadcom BCM57788 Gigabit Ethernet"},
266         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57790,
267                 "Broadcom BCM57790 Gigabit Ethernet"},
268         { PCI_VENDOR_SCHNEIDERKOCH, PCI_PRODUCT_SCHNEIDERKOCH_SK_9DX1,
269                 "SysKonnect Gigabit Ethernet" },
270
271         { 0, 0, NULL }
272 };
273
274 #define BGE_IS_JUMBO_CAPABLE(sc)        ((sc)->bge_flags & BGE_FLAG_JUMBO)
275 #define BGE_IS_5700_FAMILY(sc)          ((sc)->bge_flags & BGE_FLAG_5700_FAMILY)
276 #define BGE_IS_5705_PLUS(sc)            ((sc)->bge_flags & BGE_FLAG_5705_PLUS)
277 #define BGE_IS_5714_FAMILY(sc)          ((sc)->bge_flags & BGE_FLAG_5714_FAMILY)
278 #define BGE_IS_575X_PLUS(sc)            ((sc)->bge_flags & BGE_FLAG_575X_PLUS)
279 #define BGE_IS_5755_PLUS(sc)            ((sc)->bge_flags & BGE_FLAG_5755_PLUS)
280
281 typedef int     (*bge_eaddr_fcn_t)(struct bge_softc *, uint8_t[]);
282
283 static int      bge_probe(device_t);
284 static int      bge_attach(device_t);
285 static int      bge_detach(device_t);
286 static void     bge_txeof(struct bge_softc *);
287 static void     bge_rxeof(struct bge_softc *);
288
289 static void     bge_tick(void *);
290 static void     bge_stats_update(struct bge_softc *);
291 static void     bge_stats_update_regs(struct bge_softc *);
292 static int      bge_encap(struct bge_softc *, struct mbuf **, uint32_t *);
293
294 #ifdef DEVICE_POLLING
295 static void     bge_poll(struct ifnet *ifp, enum poll_cmd cmd, int count);
296 #endif
297 static void     bge_intr(void *);
298 static void     bge_enable_intr(struct bge_softc *);
299 static void     bge_disable_intr(struct bge_softc *);
300 static void     bge_start(struct ifnet *);
301 static int      bge_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *);
302 static void     bge_init(void *);
303 static void     bge_stop(struct bge_softc *);
304 static void     bge_watchdog(struct ifnet *);
305 static void     bge_shutdown(device_t);
306 static int      bge_suspend(device_t);
307 static int      bge_resume(device_t);
308 static int      bge_ifmedia_upd(struct ifnet *);
309 static void     bge_ifmedia_sts(struct ifnet *, struct ifmediareq *);
310
311 static uint8_t  bge_nvram_getbyte(struct bge_softc *, int, uint8_t *);
312 static int      bge_read_nvram(struct bge_softc *, caddr_t, int, int);
313
314 static uint8_t  bge_eeprom_getbyte(struct bge_softc *, uint32_t, uint8_t *);
315 static int      bge_read_eeprom(struct bge_softc *, caddr_t, uint32_t, size_t);
316
317 static void     bge_setmulti(struct bge_softc *);
318 static void     bge_setpromisc(struct bge_softc *);
319
320 static int      bge_alloc_jumbo_mem(struct bge_softc *);
321 static void     bge_free_jumbo_mem(struct bge_softc *);
322 static struct bge_jslot
323                 *bge_jalloc(struct bge_softc *);
324 static void     bge_jfree(void *);
325 static void     bge_jref(void *);
326 static int      bge_newbuf_std(struct bge_softc *, int, int);
327 static int      bge_newbuf_jumbo(struct bge_softc *, int, int);
328 static void     bge_setup_rxdesc_std(struct bge_softc *, int);
329 static void     bge_setup_rxdesc_jumbo(struct bge_softc *, int);
330 static int      bge_init_rx_ring_std(struct bge_softc *);
331 static void     bge_free_rx_ring_std(struct bge_softc *);
332 static int      bge_init_rx_ring_jumbo(struct bge_softc *);
333 static void     bge_free_rx_ring_jumbo(struct bge_softc *);
334 static void     bge_free_tx_ring(struct bge_softc *);
335 static int      bge_init_tx_ring(struct bge_softc *);
336
337 static int      bge_chipinit(struct bge_softc *);
338 static int      bge_blockinit(struct bge_softc *);
339
340 static uint32_t bge_readmem_ind(struct bge_softc *, uint32_t);
341 static void     bge_writemem_ind(struct bge_softc *, uint32_t, uint32_t);
342 #ifdef notdef
343 static uint32_t bge_readreg_ind(struct bge_softc *, uint32_t);
344 #endif
345 static void     bge_writereg_ind(struct bge_softc *, uint32_t, uint32_t);
346 static void     bge_writemem_direct(struct bge_softc *, uint32_t, uint32_t);
347 static void     bge_writembx(struct bge_softc *, int, int);
348
349 static int      bge_miibus_readreg(device_t, int, int);
350 static int      bge_miibus_writereg(device_t, int, int, int);
351 static void     bge_miibus_statchg(device_t);
352 static void     bge_bcm5700_link_upd(struct bge_softc *, uint32_t);
353 static void     bge_tbi_link_upd(struct bge_softc *, uint32_t);
354 static void     bge_copper_link_upd(struct bge_softc *, uint32_t);
355
356 static void     bge_reset(struct bge_softc *);
357
358 static int      bge_dma_alloc(struct bge_softc *);
359 static void     bge_dma_free(struct bge_softc *);
360 static int      bge_dma_block_alloc(struct bge_softc *, bus_size_t,
361                                     bus_dma_tag_t *, bus_dmamap_t *,
362                                     void **, bus_addr_t *);
363 static void     bge_dma_block_free(bus_dma_tag_t, bus_dmamap_t, void *);
364
365 static int      bge_get_eaddr_mem(struct bge_softc *, uint8_t[]);
366 static int      bge_get_eaddr_nvram(struct bge_softc *, uint8_t[]);
367 static int      bge_get_eaddr_eeprom(struct bge_softc *, uint8_t[]);
368 static int      bge_get_eaddr(struct bge_softc *, uint8_t[]);
369
370 static void     bge_coal_change(struct bge_softc *);
371 static int      bge_sysctl_rx_coal_ticks(SYSCTL_HANDLER_ARGS);
372 static int      bge_sysctl_tx_coal_ticks(SYSCTL_HANDLER_ARGS);
373 static int      bge_sysctl_rx_max_coal_bds(SYSCTL_HANDLER_ARGS);
374 static int      bge_sysctl_tx_max_coal_bds(SYSCTL_HANDLER_ARGS);
375 static int      bge_sysctl_coal_chg(SYSCTL_HANDLER_ARGS, uint32_t *, uint32_t);
376
377 /*
378  * Set following tunable to 1 for some IBM blade servers with the DNLK
379  * switch module. Auto negotiation is broken for those configurations.
380  */
381 static int      bge_fake_autoneg = 0;
382 TUNABLE_INT("hw.bge.fake_autoneg", &bge_fake_autoneg);
383
384 /* Interrupt moderation control variables. */
385 static int      bge_rx_coal_ticks = 100;        /* usec */
386 static int      bge_tx_coal_ticks = 1023;       /* usec */
387 static int      bge_rx_max_coal_bds = 80;
388 static int      bge_tx_max_coal_bds = 128;
389
390 TUNABLE_INT("hw.bge.rx_coal_ticks", &bge_rx_coal_ticks);
391 TUNABLE_INT("hw.bge.tx_coal_ticks", &bge_tx_coal_ticks);
392 TUNABLE_INT("hw.bge.rx_max_coal_bds", &bge_rx_max_coal_bds);
393 TUNABLE_INT("hw.bge.tx_max_coal_bds", &bge_tx_max_coal_bds);
394
395 #if !defined(KTR_IF_BGE)
396 #define KTR_IF_BGE      KTR_ALL
397 #endif
398 KTR_INFO_MASTER(if_bge);
399 KTR_INFO(KTR_IF_BGE, if_bge, intr, 0, "intr");
400 KTR_INFO(KTR_IF_BGE, if_bge, rx_pkt, 1, "rx_pkt");
401 KTR_INFO(KTR_IF_BGE, if_bge, tx_pkt, 2, "tx_pkt");
402 #define logif(name)     KTR_LOG(if_bge_ ## name)
403
404 static device_method_t bge_methods[] = {
405         /* Device interface */
406         DEVMETHOD(device_probe,         bge_probe),
407         DEVMETHOD(device_attach,        bge_attach),
408         DEVMETHOD(device_detach,        bge_detach),
409         DEVMETHOD(device_shutdown,      bge_shutdown),
410         DEVMETHOD(device_suspend,       bge_suspend),
411         DEVMETHOD(device_resume,        bge_resume),
412
413         /* bus interface */
414         DEVMETHOD(bus_print_child,      bus_generic_print_child),
415         DEVMETHOD(bus_driver_added,     bus_generic_driver_added),
416
417         /* MII interface */
418         DEVMETHOD(miibus_readreg,       bge_miibus_readreg),
419         DEVMETHOD(miibus_writereg,      bge_miibus_writereg),
420         DEVMETHOD(miibus_statchg,       bge_miibus_statchg),
421
422         { 0, 0 }
423 };
424
425 static DEFINE_CLASS_0(bge, bge_driver, bge_methods, sizeof(struct bge_softc));
426 static devclass_t bge_devclass;
427
428 DECLARE_DUMMY_MODULE(if_bge);
429 DRIVER_MODULE(if_bge, pci, bge_driver, bge_devclass, NULL, NULL);
430 DRIVER_MODULE(miibus, bge, miibus_driver, miibus_devclass, NULL, NULL);
431
432 static uint32_t
433 bge_readmem_ind(struct bge_softc *sc, uint32_t off)
434 {
435         device_t dev = sc->bge_dev;
436         uint32_t val;
437
438         pci_write_config(dev, BGE_PCI_MEMWIN_BASEADDR, off, 4);
439         val = pci_read_config(dev, BGE_PCI_MEMWIN_DATA, 4);
440         pci_write_config(dev, BGE_PCI_MEMWIN_BASEADDR, 0, 4);
441         return (val);
442 }
443
444 static void
445 bge_writemem_ind(struct bge_softc *sc, uint32_t off, uint32_t val)
446 {
447         device_t dev = sc->bge_dev;
448
449         pci_write_config(dev, BGE_PCI_MEMWIN_BASEADDR, off, 4);
450         pci_write_config(dev, BGE_PCI_MEMWIN_DATA, val, 4);
451         pci_write_config(dev, BGE_PCI_MEMWIN_BASEADDR, 0, 4);
452 }
453
454 #ifdef notdef
455 static uint32_t
456 bge_readreg_ind(struct bge_softc *sc, uin32_t off)
457 {
458         device_t dev = sc->bge_dev;
459
460         pci_write_config(dev, BGE_PCI_REG_BASEADDR, off, 4);
461         return(pci_read_config(dev, BGE_PCI_REG_DATA, 4));
462 }
463 #endif
464
465 static void
466 bge_writereg_ind(struct bge_softc *sc, uint32_t off, uint32_t val)
467 {
468         device_t dev = sc->bge_dev;
469
470         pci_write_config(dev, BGE_PCI_REG_BASEADDR, off, 4);
471         pci_write_config(dev, BGE_PCI_REG_DATA, val, 4);
472 }
473
474 static void
475 bge_writemem_direct(struct bge_softc *sc, uint32_t off, uint32_t val)
476 {
477         CSR_WRITE_4(sc, off, val);
478 }
479
480 static void
481 bge_writembx(struct bge_softc *sc, int off, int val)
482 {
483         if (sc->bge_asicrev == BGE_ASICREV_BCM5906)
484                 off += BGE_LPMBX_IRQ0_HI - BGE_MBX_IRQ0_HI;
485
486         CSR_WRITE_4(sc, off, val);
487 }
488
489 static uint8_t
490 bge_nvram_getbyte(struct bge_softc *sc, int addr, uint8_t *dest)
491 {
492         uint32_t access, byte = 0;
493         int i;
494
495         /* Lock. */
496         CSR_WRITE_4(sc, BGE_NVRAM_SWARB, BGE_NVRAMSWARB_SET1);
497         for (i = 0; i < 8000; i++) {
498                 if (CSR_READ_4(sc, BGE_NVRAM_SWARB) & BGE_NVRAMSWARB_GNT1)
499                         break;
500                 DELAY(20);
501         }
502         if (i == 8000)
503                 return (1);
504
505         /* Enable access. */
506         access = CSR_READ_4(sc, BGE_NVRAM_ACCESS);
507         CSR_WRITE_4(sc, BGE_NVRAM_ACCESS, access | BGE_NVRAMACC_ENABLE);
508
509         CSR_WRITE_4(sc, BGE_NVRAM_ADDR, addr & 0xfffffffc);
510         CSR_WRITE_4(sc, BGE_NVRAM_CMD, BGE_NVRAM_READCMD);
511         for (i = 0; i < BGE_TIMEOUT * 10; i++) {
512                 DELAY(10);
513                 if (CSR_READ_4(sc, BGE_NVRAM_CMD) & BGE_NVRAMCMD_DONE) {
514                         DELAY(10);
515                         break;
516                 }
517         }
518
519         if (i == BGE_TIMEOUT * 10) {
520                 if_printf(&sc->arpcom.ac_if, "nvram read timed out\n");
521                 return (1);
522         }
523
524         /* Get result. */
525         byte = CSR_READ_4(sc, BGE_NVRAM_RDDATA);
526
527         *dest = (bswap32(byte) >> ((addr % 4) * 8)) & 0xFF;
528
529         /* Disable access. */
530         CSR_WRITE_4(sc, BGE_NVRAM_ACCESS, access);
531
532         /* Unlock. */
533         CSR_WRITE_4(sc, BGE_NVRAM_SWARB, BGE_NVRAMSWARB_CLR1);
534         CSR_READ_4(sc, BGE_NVRAM_SWARB);
535
536         return (0);
537 }
538
539 /*
540  * Read a sequence of bytes from NVRAM.
541  */
542 static int
543 bge_read_nvram(struct bge_softc *sc, caddr_t dest, int off, int cnt)
544 {
545         int err = 0, i;
546         uint8_t byte = 0;
547
548         if (sc->bge_asicrev != BGE_ASICREV_BCM5906)
549                 return (1);
550
551         for (i = 0; i < cnt; i++) {
552                 err = bge_nvram_getbyte(sc, off + i, &byte);
553                 if (err)
554                         break;
555                 *(dest + i) = byte;
556         }
557
558         return (err ? 1 : 0);
559 }
560
561 /*
562  * Read a byte of data stored in the EEPROM at address 'addr.' The
563  * BCM570x supports both the traditional bitbang interface and an
564  * auto access interface for reading the EEPROM. We use the auto
565  * access method.
566  */
567 static uint8_t
568 bge_eeprom_getbyte(struct bge_softc *sc, uint32_t addr, uint8_t *dest)
569 {
570         int i;
571         uint32_t byte = 0;
572
573         /*
574          * Enable use of auto EEPROM access so we can avoid
575          * having to use the bitbang method.
576          */
577         BGE_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_AUTO_EEPROM);
578
579         /* Reset the EEPROM, load the clock period. */
580         CSR_WRITE_4(sc, BGE_EE_ADDR,
581             BGE_EEADDR_RESET|BGE_EEHALFCLK(BGE_HALFCLK_384SCL));
582         DELAY(20);
583
584         /* Issue the read EEPROM command. */
585         CSR_WRITE_4(sc, BGE_EE_ADDR, BGE_EE_READCMD | addr);
586
587         /* Wait for completion */
588         for(i = 0; i < BGE_TIMEOUT * 10; i++) {
589                 DELAY(10);
590                 if (CSR_READ_4(sc, BGE_EE_ADDR) & BGE_EEADDR_DONE)
591                         break;
592         }
593
594         if (i == BGE_TIMEOUT) {
595                 if_printf(&sc->arpcom.ac_if, "eeprom read timed out\n");
596                 return(1);
597         }
598
599         /* Get result. */
600         byte = CSR_READ_4(sc, BGE_EE_DATA);
601
602         *dest = (byte >> ((addr % 4) * 8)) & 0xFF;
603
604         return(0);
605 }
606
607 /*
608  * Read a sequence of bytes from the EEPROM.
609  */
610 static int
611 bge_read_eeprom(struct bge_softc *sc, caddr_t dest, uint32_t off, size_t len)
612 {
613         size_t i;
614         int err;
615         uint8_t byte;
616
617         for (byte = 0, err = 0, i = 0; i < len; i++) {
618                 err = bge_eeprom_getbyte(sc, off + i, &byte);
619                 if (err)
620                         break;
621                 *(dest + i) = byte;
622         }
623
624         return(err ? 1 : 0);
625 }
626
627 static int
628 bge_miibus_readreg(device_t dev, int phy, int reg)
629 {
630         struct bge_softc *sc = device_get_softc(dev);
631         struct ifnet *ifp = &sc->arpcom.ac_if;
632         uint32_t val, autopoll;
633         int i;
634
635         /*
636          * Broadcom's own driver always assumes the internal
637          * PHY is at GMII address 1. On some chips, the PHY responds
638          * to accesses at all addresses, which could cause us to
639          * bogusly attach the PHY 32 times at probe type. Always
640          * restricting the lookup to address 1 is simpler than
641          * trying to figure out which chips revisions should be
642          * special-cased.
643          */
644         if (phy != 1)
645                 return(0);
646
647         /* Reading with autopolling on may trigger PCI errors */
648         autopoll = CSR_READ_4(sc, BGE_MI_MODE);
649         if (autopoll & BGE_MIMODE_AUTOPOLL) {
650                 BGE_CLRBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL);
651                 DELAY(40);
652         }
653
654         CSR_WRITE_4(sc, BGE_MI_COMM, BGE_MICMD_READ|BGE_MICOMM_BUSY|
655             BGE_MIPHY(phy)|BGE_MIREG(reg));
656
657         for (i = 0; i < BGE_TIMEOUT; i++) {
658                 DELAY(10);
659                 val = CSR_READ_4(sc, BGE_MI_COMM);
660                 if (!(val & BGE_MICOMM_BUSY))
661                         break;
662         }
663
664         if (i == BGE_TIMEOUT) {
665                 if_printf(ifp, "PHY read timed out "
666                           "(phy %d, reg %d, val 0x%08x)\n", phy, reg, val);
667                 val = 0;
668                 goto done;
669         }
670
671         DELAY(5);
672         val = CSR_READ_4(sc, BGE_MI_COMM);
673
674 done:
675         if (autopoll & BGE_MIMODE_AUTOPOLL) {
676                 BGE_SETBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL);
677                 DELAY(40);
678         }
679
680         if (val & BGE_MICOMM_READFAIL)
681                 return(0);
682
683         return(val & 0xFFFF);
684 }
685
686 static int
687 bge_miibus_writereg(device_t dev, int phy, int reg, int val)
688 {
689         struct bge_softc *sc = device_get_softc(dev);
690         uint32_t autopoll;
691         int i;
692
693         /*
694          * See the related comment in bge_miibus_readreg()
695          */
696         if (phy != 1)
697                 return(0);
698
699         if (sc->bge_asicrev == BGE_ASICREV_BCM5906 &&
700             (reg == BRGPHY_MII_1000CTL || reg == BRGPHY_MII_AUXCTL))
701                return(0);
702
703         /* Reading with autopolling on may trigger PCI errors */
704         autopoll = CSR_READ_4(sc, BGE_MI_MODE);
705         if (autopoll & BGE_MIMODE_AUTOPOLL) {
706                 BGE_CLRBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL);
707                 DELAY(40);
708         }
709
710         CSR_WRITE_4(sc, BGE_MI_COMM, BGE_MICMD_WRITE|BGE_MICOMM_BUSY|
711             BGE_MIPHY(phy)|BGE_MIREG(reg)|val);
712
713         for (i = 0; i < BGE_TIMEOUT; i++) {
714                 DELAY(10);
715                 if (!(CSR_READ_4(sc, BGE_MI_COMM) & BGE_MICOMM_BUSY)) {
716                         DELAY(5);
717                         CSR_READ_4(sc, BGE_MI_COMM); /* dummy read */
718                         break;
719                 }
720         }
721
722         if (autopoll & BGE_MIMODE_AUTOPOLL) {
723                 BGE_SETBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL);
724                 DELAY(40);
725         }
726
727         if (i == BGE_TIMEOUT) {
728                 if_printf(&sc->arpcom.ac_if, "PHY write timed out "
729                           "(phy %d, reg %d, val %d)\n", phy, reg, val);
730                 return(0);
731         }
732
733         return(0);
734 }
735
736 static void
737 bge_miibus_statchg(device_t dev)
738 {
739         struct bge_softc *sc;
740         struct mii_data *mii;
741
742         sc = device_get_softc(dev);
743         mii = device_get_softc(sc->bge_miibus);
744
745         BGE_CLRBIT(sc, BGE_MAC_MODE, BGE_MACMODE_PORTMODE);
746         if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T ||
747             IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_SX) {
748                 BGE_SETBIT(sc, BGE_MAC_MODE, BGE_PORTMODE_GMII);
749         } else {
750                 BGE_SETBIT(sc, BGE_MAC_MODE, BGE_PORTMODE_MII);
751         }
752
753         if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX) {
754                 BGE_CLRBIT(sc, BGE_MAC_MODE, BGE_MACMODE_HALF_DUPLEX);
755         } else {
756                 BGE_SETBIT(sc, BGE_MAC_MODE, BGE_MACMODE_HALF_DUPLEX);
757         }
758 }
759
760 /*
761  * Memory management for jumbo frames.
762  */
763 static int
764 bge_alloc_jumbo_mem(struct bge_softc *sc)
765 {
766         struct ifnet *ifp = &sc->arpcom.ac_if;
767         struct bge_jslot *entry;
768         uint8_t *ptr;
769         bus_addr_t paddr;
770         int i, error;
771
772         /*
773          * Create tag for jumbo mbufs.
774          * This is really a bit of a kludge. We allocate a special
775          * jumbo buffer pool which (thanks to the way our DMA
776          * memory allocation works) will consist of contiguous
777          * pages. This means that even though a jumbo buffer might
778          * be larger than a page size, we don't really need to
779          * map it into more than one DMA segment. However, the
780          * default mbuf tag will result in multi-segment mappings,
781          * so we have to create a special jumbo mbuf tag that
782          * lets us get away with mapping the jumbo buffers as
783          * a single segment. I think eventually the driver should
784          * be changed so that it uses ordinary mbufs and cluster
785          * buffers, i.e. jumbo frames can span multiple DMA
786          * descriptors. But that's a project for another day.
787          */
788
789         /*
790          * Create DMA stuffs for jumbo RX ring.
791          */
792         error = bge_dma_block_alloc(sc, BGE_JUMBO_RX_RING_SZ,
793                                     &sc->bge_cdata.bge_rx_jumbo_ring_tag,
794                                     &sc->bge_cdata.bge_rx_jumbo_ring_map,
795                                     (void *)&sc->bge_ldata.bge_rx_jumbo_ring,
796                                     &sc->bge_ldata.bge_rx_jumbo_ring_paddr);
797         if (error) {
798                 if_printf(ifp, "could not create jumbo RX ring\n");
799                 return error;
800         }
801
802         /*
803          * Create DMA stuffs for jumbo buffer block.
804          */
805         error = bge_dma_block_alloc(sc, BGE_JMEM,
806                                     &sc->bge_cdata.bge_jumbo_tag,
807                                     &sc->bge_cdata.bge_jumbo_map,
808                                     (void **)&sc->bge_ldata.bge_jumbo_buf,
809                                     &paddr);
810         if (error) {
811                 if_printf(ifp, "could not create jumbo buffer\n");
812                 return error;
813         }
814
815         SLIST_INIT(&sc->bge_jfree_listhead);
816
817         /*
818          * Now divide it up into 9K pieces and save the addresses
819          * in an array. Note that we play an evil trick here by using
820          * the first few bytes in the buffer to hold the the address
821          * of the softc structure for this interface. This is because
822          * bge_jfree() needs it, but it is called by the mbuf management
823          * code which will not pass it to us explicitly.
824          */
825         for (i = 0, ptr = sc->bge_ldata.bge_jumbo_buf; i < BGE_JSLOTS; i++) {
826                 entry = &sc->bge_cdata.bge_jslots[i];
827                 entry->bge_sc = sc;
828                 entry->bge_buf = ptr;
829                 entry->bge_paddr = paddr;
830                 entry->bge_inuse = 0;
831                 entry->bge_slot = i;
832                 SLIST_INSERT_HEAD(&sc->bge_jfree_listhead, entry, jslot_link);
833
834                 ptr += BGE_JLEN;
835                 paddr += BGE_JLEN;
836         }
837         return 0;
838 }
839
840 static void
841 bge_free_jumbo_mem(struct bge_softc *sc)
842 {
843         /* Destroy jumbo RX ring. */
844         bge_dma_block_free(sc->bge_cdata.bge_rx_jumbo_ring_tag,
845                            sc->bge_cdata.bge_rx_jumbo_ring_map,
846                            sc->bge_ldata.bge_rx_jumbo_ring);
847
848         /* Destroy jumbo buffer block. */
849         bge_dma_block_free(sc->bge_cdata.bge_jumbo_tag,
850                            sc->bge_cdata.bge_jumbo_map,
851                            sc->bge_ldata.bge_jumbo_buf);
852 }
853
854 /*
855  * Allocate a jumbo buffer.
856  */
857 static struct bge_jslot *
858 bge_jalloc(struct bge_softc *sc)
859 {
860         struct bge_jslot *entry;
861
862         lwkt_serialize_enter(&sc->bge_jslot_serializer);
863         entry = SLIST_FIRST(&sc->bge_jfree_listhead);
864         if (entry) {
865                 SLIST_REMOVE_HEAD(&sc->bge_jfree_listhead, jslot_link);
866                 entry->bge_inuse = 1;
867         } else {
868                 if_printf(&sc->arpcom.ac_if, "no free jumbo buffers\n");
869         }
870         lwkt_serialize_exit(&sc->bge_jslot_serializer);
871         return(entry);
872 }
873
874 /*
875  * Adjust usage count on a jumbo buffer.
876  */
877 static void
878 bge_jref(void *arg)
879 {
880         struct bge_jslot *entry = (struct bge_jslot *)arg;
881         struct bge_softc *sc = entry->bge_sc;
882
883         if (sc == NULL)
884                 panic("bge_jref: can't find softc pointer!");
885
886         if (&sc->bge_cdata.bge_jslots[entry->bge_slot] != entry) {
887                 panic("bge_jref: asked to reference buffer "
888                     "that we don't manage!");
889         } else if (entry->bge_inuse == 0) {
890                 panic("bge_jref: buffer already free!");
891         } else {
892                 atomic_add_int(&entry->bge_inuse, 1);
893         }
894 }
895
896 /*
897  * Release a jumbo buffer.
898  */
899 static void
900 bge_jfree(void *arg)
901 {
902         struct bge_jslot *entry = (struct bge_jslot *)arg;
903         struct bge_softc *sc = entry->bge_sc;
904
905         if (sc == NULL)
906                 panic("bge_jfree: can't find softc pointer!");
907
908         if (&sc->bge_cdata.bge_jslots[entry->bge_slot] != entry) {
909                 panic("bge_jfree: asked to free buffer that we don't manage!");
910         } else if (entry->bge_inuse == 0) {
911                 panic("bge_jfree: buffer already free!");
912         } else {
913                 /*
914                  * Possible MP race to 0, use the serializer.  The atomic insn
915                  * is still needed for races against bge_jref().
916                  */
917                 lwkt_serialize_enter(&sc->bge_jslot_serializer);
918                 atomic_subtract_int(&entry->bge_inuse, 1);
919                 if (entry->bge_inuse == 0) {
920                         SLIST_INSERT_HEAD(&sc->bge_jfree_listhead, 
921                                           entry, jslot_link);
922                 }
923                 lwkt_serialize_exit(&sc->bge_jslot_serializer);
924         }
925 }
926
927
928 /*
929  * Intialize a standard receive ring descriptor.
930  */
931 static int
932 bge_newbuf_std(struct bge_softc *sc, int i, int init)
933 {
934         struct mbuf *m_new = NULL;
935         bus_dma_segment_t seg;
936         bus_dmamap_t map;
937         int error, nsegs;
938
939         m_new = m_getcl(init ? MB_WAIT : MB_DONTWAIT, MT_DATA, M_PKTHDR);
940         if (m_new == NULL)
941                 return ENOBUFS;
942         m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
943
944         if ((sc->bge_flags & BGE_FLAG_RX_ALIGNBUG) == 0)
945                 m_adj(m_new, ETHER_ALIGN);
946
947         error = bus_dmamap_load_mbuf_segment(sc->bge_cdata.bge_rx_mtag,
948                         sc->bge_cdata.bge_rx_tmpmap, m_new,
949                         &seg, 1, &nsegs, BUS_DMA_NOWAIT);
950         if (error) {
951                 m_freem(m_new);
952                 return error;
953         }
954
955         if (!init) {
956                 bus_dmamap_sync(sc->bge_cdata.bge_rx_mtag,
957                                 sc->bge_cdata.bge_rx_std_dmamap[i],
958                                 BUS_DMASYNC_POSTREAD);
959                 bus_dmamap_unload(sc->bge_cdata.bge_rx_mtag,
960                         sc->bge_cdata.bge_rx_std_dmamap[i]);
961         }
962
963         map = sc->bge_cdata.bge_rx_tmpmap;
964         sc->bge_cdata.bge_rx_tmpmap = sc->bge_cdata.bge_rx_std_dmamap[i];
965         sc->bge_cdata.bge_rx_std_dmamap[i] = map;
966
967         sc->bge_cdata.bge_rx_std_chain[i].bge_mbuf = m_new;
968         sc->bge_cdata.bge_rx_std_chain[i].bge_paddr = seg.ds_addr;
969
970         bge_setup_rxdesc_std(sc, i);
971         return 0;
972 }
973
974 static void
975 bge_setup_rxdesc_std(struct bge_softc *sc, int i)
976 {
977         struct bge_rxchain *rc;
978         struct bge_rx_bd *r;
979
980         rc = &sc->bge_cdata.bge_rx_std_chain[i];
981         r = &sc->bge_ldata.bge_rx_std_ring[i];
982
983         r->bge_addr.bge_addr_lo = BGE_ADDR_LO(rc->bge_paddr);
984         r->bge_addr.bge_addr_hi = BGE_ADDR_HI(rc->bge_paddr);
985         r->bge_len = rc->bge_mbuf->m_len;
986         r->bge_idx = i;
987         r->bge_flags = BGE_RXBDFLAG_END;
988 }
989
990 /*
991  * Initialize a jumbo receive ring descriptor. This allocates
992  * a jumbo buffer from the pool managed internally by the driver.
993  */
994 static int
995 bge_newbuf_jumbo(struct bge_softc *sc, int i, int init)
996 {
997         struct mbuf *m_new = NULL;
998         struct bge_jslot *buf;
999         bus_addr_t paddr;
1000
1001         /* Allocate the mbuf. */
1002         MGETHDR(m_new, init ? MB_WAIT : MB_DONTWAIT, MT_DATA);
1003         if (m_new == NULL)
1004                 return ENOBUFS;
1005
1006         /* Allocate the jumbo buffer */
1007         buf = bge_jalloc(sc);
1008         if (buf == NULL) {
1009                 m_freem(m_new);
1010                 return ENOBUFS;
1011         }
1012
1013         /* Attach the buffer to the mbuf. */
1014         m_new->m_ext.ext_arg = buf;
1015         m_new->m_ext.ext_buf = buf->bge_buf;
1016         m_new->m_ext.ext_free = bge_jfree;
1017         m_new->m_ext.ext_ref = bge_jref;
1018         m_new->m_ext.ext_size = BGE_JUMBO_FRAMELEN;
1019
1020         m_new->m_flags |= M_EXT;
1021
1022         m_new->m_data = m_new->m_ext.ext_buf;
1023         m_new->m_len = m_new->m_pkthdr.len = m_new->m_ext.ext_size;
1024
1025         paddr = buf->bge_paddr;
1026         if ((sc->bge_flags & BGE_FLAG_RX_ALIGNBUG) == 0) {
1027                 m_adj(m_new, ETHER_ALIGN);
1028                 paddr += ETHER_ALIGN;
1029         }
1030
1031         /* Save necessary information */
1032         sc->bge_cdata.bge_rx_jumbo_chain[i].bge_mbuf = m_new;
1033         sc->bge_cdata.bge_rx_jumbo_chain[i].bge_paddr = paddr;
1034
1035         /* Set up the descriptor. */
1036         bge_setup_rxdesc_jumbo(sc, i);
1037         return 0;
1038 }
1039
1040 static void
1041 bge_setup_rxdesc_jumbo(struct bge_softc *sc, int i)
1042 {
1043         struct bge_rx_bd *r;
1044         struct bge_rxchain *rc;
1045
1046         r = &sc->bge_ldata.bge_rx_jumbo_ring[i];
1047         rc = &sc->bge_cdata.bge_rx_jumbo_chain[i];
1048
1049         r->bge_addr.bge_addr_lo = BGE_ADDR_LO(rc->bge_paddr);
1050         r->bge_addr.bge_addr_hi = BGE_ADDR_HI(rc->bge_paddr);
1051         r->bge_len = rc->bge_mbuf->m_len;
1052         r->bge_idx = i;
1053         r->bge_flags = BGE_RXBDFLAG_END|BGE_RXBDFLAG_JUMBO_RING;
1054 }
1055
1056 static int
1057 bge_init_rx_ring_std(struct bge_softc *sc)
1058 {
1059         int i, error;
1060
1061         for (i = 0; i < BGE_STD_RX_RING_CNT; i++) {
1062                 error = bge_newbuf_std(sc, i, 1);
1063                 if (error)
1064                         return error;
1065         };
1066
1067         sc->bge_std = BGE_STD_RX_RING_CNT - 1;
1068         bge_writembx(sc, BGE_MBX_RX_STD_PROD_LO, sc->bge_std);
1069
1070         return(0);
1071 }
1072
1073 static void
1074 bge_free_rx_ring_std(struct bge_softc *sc)
1075 {
1076         int i;
1077
1078         for (i = 0; i < BGE_STD_RX_RING_CNT; i++) {
1079                 struct bge_rxchain *rc = &sc->bge_cdata.bge_rx_std_chain[i];
1080
1081                 if (rc->bge_mbuf != NULL) {
1082                         bus_dmamap_unload(sc->bge_cdata.bge_rx_mtag,
1083                                           sc->bge_cdata.bge_rx_std_dmamap[i]);
1084                         m_freem(rc->bge_mbuf);
1085                         rc->bge_mbuf = NULL;
1086                 }
1087                 bzero(&sc->bge_ldata.bge_rx_std_ring[i],
1088                     sizeof(struct bge_rx_bd));
1089         }
1090 }
1091
1092 static int
1093 bge_init_rx_ring_jumbo(struct bge_softc *sc)
1094 {
1095         struct bge_rcb *rcb;
1096         int i, error;
1097
1098         for (i = 0; i < BGE_JUMBO_RX_RING_CNT; i++) {
1099                 error = bge_newbuf_jumbo(sc, i, 1);
1100                 if (error)
1101                         return error;
1102         };
1103
1104         sc->bge_jumbo = BGE_JUMBO_RX_RING_CNT - 1;
1105
1106         rcb = &sc->bge_ldata.bge_info.bge_jumbo_rx_rcb;
1107         rcb->bge_maxlen_flags = BGE_RCB_MAXLEN_FLAGS(0, 0);
1108         CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_MAXLEN_FLAGS, rcb->bge_maxlen_flags);
1109
1110         bge_writembx(sc, BGE_MBX_RX_JUMBO_PROD_LO, sc->bge_jumbo);
1111
1112         return(0);
1113 }
1114
1115 static void
1116 bge_free_rx_ring_jumbo(struct bge_softc *sc)
1117 {
1118         int i;
1119
1120         for (i = 0; i < BGE_JUMBO_RX_RING_CNT; i++) {
1121                 struct bge_rxchain *rc = &sc->bge_cdata.bge_rx_jumbo_chain[i];
1122
1123                 if (rc->bge_mbuf != NULL) {
1124                         m_freem(rc->bge_mbuf);
1125                         rc->bge_mbuf = NULL;
1126                 }
1127                 bzero(&sc->bge_ldata.bge_rx_jumbo_ring[i],
1128                     sizeof(struct bge_rx_bd));
1129         }
1130 }
1131
1132 static void
1133 bge_free_tx_ring(struct bge_softc *sc)
1134 {
1135         int i;
1136
1137         for (i = 0; i < BGE_TX_RING_CNT; i++) {
1138                 if (sc->bge_cdata.bge_tx_chain[i] != NULL) {
1139                         bus_dmamap_unload(sc->bge_cdata.bge_tx_mtag,
1140                                           sc->bge_cdata.bge_tx_dmamap[i]);
1141                         m_freem(sc->bge_cdata.bge_tx_chain[i]);
1142                         sc->bge_cdata.bge_tx_chain[i] = NULL;
1143                 }
1144                 bzero(&sc->bge_ldata.bge_tx_ring[i],
1145                     sizeof(struct bge_tx_bd));
1146         }
1147 }
1148
1149 static int
1150 bge_init_tx_ring(struct bge_softc *sc)
1151 {
1152         sc->bge_txcnt = 0;
1153         sc->bge_tx_saved_considx = 0;
1154         sc->bge_tx_prodidx = 0;
1155
1156         /* Initialize transmit producer index for host-memory send ring. */
1157         bge_writembx(sc, BGE_MBX_TX_HOST_PROD0_LO, sc->bge_tx_prodidx);
1158
1159         /* 5700 b2 errata */
1160         if (sc->bge_chiprev == BGE_CHIPREV_5700_BX)
1161                 bge_writembx(sc, BGE_MBX_TX_HOST_PROD0_LO, sc->bge_tx_prodidx);
1162
1163         bge_writembx(sc, BGE_MBX_TX_NIC_PROD0_LO, 0);
1164         /* 5700 b2 errata */
1165         if (sc->bge_chiprev == BGE_CHIPREV_5700_BX)
1166                 bge_writembx(sc, BGE_MBX_TX_NIC_PROD0_LO, 0);
1167
1168         return(0);
1169 }
1170
1171 static void
1172 bge_setmulti(struct bge_softc *sc)
1173 {
1174         struct ifnet *ifp;
1175         struct ifmultiaddr *ifma;
1176         uint32_t hashes[4] = { 0, 0, 0, 0 };
1177         int h, i;
1178
1179         ifp = &sc->arpcom.ac_if;
1180
1181         if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
1182                 for (i = 0; i < 4; i++)
1183                         CSR_WRITE_4(sc, BGE_MAR0 + (i * 4), 0xFFFFFFFF);
1184                 return;
1185         }
1186
1187         /* First, zot all the existing filters. */
1188         for (i = 0; i < 4; i++)
1189                 CSR_WRITE_4(sc, BGE_MAR0 + (i * 4), 0);
1190
1191         /* Now program new ones. */
1192         TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
1193                 if (ifma->ifma_addr->sa_family != AF_LINK)
1194                         continue;
1195                 h = ether_crc32_le(
1196                     LLADDR((struct sockaddr_dl *)ifma->ifma_addr),
1197                     ETHER_ADDR_LEN) & 0x7f;
1198                 hashes[(h & 0x60) >> 5] |= 1 << (h & 0x1F);
1199         }
1200
1201         for (i = 0; i < 4; i++)
1202                 CSR_WRITE_4(sc, BGE_MAR0 + (i * 4), hashes[i]);
1203 }
1204
1205 /*
1206  * Do endian, PCI and DMA initialization. Also check the on-board ROM
1207  * self-test results.
1208  */
1209 static int
1210 bge_chipinit(struct bge_softc *sc)
1211 {
1212         int i;
1213         uint32_t dma_rw_ctl;
1214         uint16_t val;
1215
1216         /* Set endian type before we access any non-PCI registers. */
1217         pci_write_config(sc->bge_dev, BGE_PCI_MISC_CTL, BGE_INIT, 4);
1218
1219         /* Clear the MAC control register */
1220         CSR_WRITE_4(sc, BGE_MAC_MODE, 0);
1221
1222         /*
1223          * Clear the MAC statistics block in the NIC's
1224          * internal memory.
1225          */
1226         for (i = BGE_STATS_BLOCK;
1227             i < BGE_STATS_BLOCK_END + 1; i += sizeof(uint32_t))
1228                 BGE_MEMWIN_WRITE(sc, i, 0);
1229
1230         for (i = BGE_STATUS_BLOCK;
1231             i < BGE_STATUS_BLOCK_END + 1; i += sizeof(uint32_t))
1232                 BGE_MEMWIN_WRITE(sc, i, 0);
1233
1234         if (sc->bge_chiprev == BGE_CHIPREV_5704_BX) {
1235                 /*
1236                  * Fix data corruption caused by non-qword write with WB.
1237                  * Fix master abort in PCI mode.
1238                  * Fix PCI latency timer.
1239                  */
1240                 val = pci_read_config(sc->bge_dev, BGE_PCI_MSI_DATA + 2, 2);
1241                 val |= (1 << 10) | (1 << 12) | (1 << 13);
1242                 pci_write_config(sc->bge_dev, BGE_PCI_MSI_DATA + 2, val, 2);
1243         }
1244
1245         /* Set up the PCI DMA control register. */
1246         if (sc->bge_flags & BGE_FLAG_PCIE) {
1247                 /* PCI Express */
1248                 dma_rw_ctl = BGE_PCI_READ_CMD|BGE_PCI_WRITE_CMD |
1249                     (0xf << BGE_PCIDMARWCTL_RD_WAT_SHIFT) |
1250                     (0x2 << BGE_PCIDMARWCTL_WR_WAT_SHIFT);
1251         } else if (sc->bge_flags & BGE_FLAG_PCIX) {
1252                 /* PCI-X bus */
1253                 if (BGE_IS_5714_FAMILY(sc)) {
1254                         dma_rw_ctl = BGE_PCI_READ_CMD|BGE_PCI_WRITE_CMD;
1255                         dma_rw_ctl &= ~BGE_PCIDMARWCTL_ONEDMA_ATONCE; /* XXX */
1256                         /* XXX magic values, Broadcom-supplied Linux driver */
1257                         if (sc->bge_asicrev == BGE_ASICREV_BCM5780) {
1258                                 dma_rw_ctl |= (1 << 20) | (1 << 18) | 
1259                                     BGE_PCIDMARWCTL_ONEDMA_ATONCE;
1260                         } else {
1261                                 dma_rw_ctl |= (1 << 20) | (1 << 18) | (1 << 15);
1262                         }
1263                 } else if (sc->bge_asicrev == BGE_ASICREV_BCM5703) {
1264                         /*
1265                          * In the BCM5703, the DMA read watermark should
1266                          * be set to less than or equal to the maximum
1267                          * memory read byte count of the PCI-X command
1268                          * register.
1269                          */
1270                         dma_rw_ctl = BGE_PCI_READ_CMD|BGE_PCI_WRITE_CMD |
1271                             (0x4 << BGE_PCIDMARWCTL_RD_WAT_SHIFT) |
1272                             (0x3 << BGE_PCIDMARWCTL_WR_WAT_SHIFT);
1273                 } else if (sc->bge_asicrev == BGE_ASICREV_BCM5704) {
1274                         /*
1275                          * The 5704 uses a different encoding of read/write
1276                          * watermarks.
1277                          */
1278                         dma_rw_ctl = BGE_PCI_READ_CMD|BGE_PCI_WRITE_CMD |
1279                             (0x7 << BGE_PCIDMARWCTL_RD_WAT_SHIFT) |
1280                             (0x3 << BGE_PCIDMARWCTL_WR_WAT_SHIFT);
1281                 } else {
1282                         dma_rw_ctl = BGE_PCI_READ_CMD|BGE_PCI_WRITE_CMD |
1283                             (0x3 << BGE_PCIDMARWCTL_RD_WAT_SHIFT) |
1284                             (0x3 << BGE_PCIDMARWCTL_WR_WAT_SHIFT) |
1285                             (0x0F);
1286                 }
1287
1288                 /*
1289                  * 5703 and 5704 need ONEDMA_AT_ONCE as a workaround
1290                  * for hardware bugs.
1291                  */
1292                 if (sc->bge_asicrev == BGE_ASICREV_BCM5703 ||
1293                     sc->bge_asicrev == BGE_ASICREV_BCM5704) {
1294                         uint32_t tmp;
1295
1296                         tmp = CSR_READ_4(sc, BGE_PCI_CLKCTL) & 0x1f;
1297                         if (tmp == 0x6 || tmp == 0x7)
1298                                 dma_rw_ctl |= BGE_PCIDMARWCTL_ONEDMA_ATONCE;
1299                 }
1300         } else {
1301                 /* Conventional PCI bus */
1302                 dma_rw_ctl = BGE_PCI_READ_CMD|BGE_PCI_WRITE_CMD |
1303                     (0x7 << BGE_PCIDMARWCTL_RD_WAT_SHIFT) |
1304                     (0x7 << BGE_PCIDMARWCTL_WR_WAT_SHIFT) |
1305                     (0x0F);
1306         }
1307
1308         if (sc->bge_asicrev == BGE_ASICREV_BCM5703 ||
1309             sc->bge_asicrev == BGE_ASICREV_BCM5704 ||
1310             sc->bge_asicrev == BGE_ASICREV_BCM5705)
1311                 dma_rw_ctl &= ~BGE_PCIDMARWCTL_MINDMA;
1312         pci_write_config(sc->bge_dev, BGE_PCI_DMA_RW_CTL, dma_rw_ctl, 4);
1313
1314         /*
1315          * Set up general mode register.
1316          */
1317         CSR_WRITE_4(sc, BGE_MODE_CTL, BGE_DMA_SWAP_OPTIONS|
1318             BGE_MODECTL_MAC_ATTN_INTR|BGE_MODECTL_HOST_SEND_BDS|
1319             BGE_MODECTL_TX_NO_PHDR_CSUM);
1320
1321         /*
1322          * BCM5701 B5 have a bug causing data corruption when using
1323          * 64-bit DMA reads, which can be terminated early and then
1324          * completed later as 32-bit accesses, in combination with
1325          * certain bridges.
1326          */
1327         if (sc->bge_asicrev == BGE_ASICREV_BCM5701 &&
1328             sc->bge_chipid == BGE_CHIPID_BCM5701_B5)
1329                 BGE_SETBIT(sc, BGE_MODE_CTL, BGE_MODECTL_FORCE_PCI32);
1330
1331         /*
1332          * Disable memory write invalidate.  Apparently it is not supported
1333          * properly by these devices.
1334          */
1335         PCI_CLRBIT(sc->bge_dev, BGE_PCI_CMD, PCIM_CMD_MWIEN, 4);
1336
1337         /* Set the timer prescaler (always 66Mhz) */
1338         CSR_WRITE_4(sc, BGE_MISC_CFG, 65 << 1/*BGE_32BITTIME_66MHZ*/);
1339
1340         if (sc->bge_asicrev == BGE_ASICREV_BCM5906) {
1341                 DELAY(40);      /* XXX */
1342
1343                 /* Put PHY into ready state */
1344                 BGE_CLRBIT(sc, BGE_MISC_CFG, BGE_MISCCFG_EPHY_IDDQ);
1345                 CSR_READ_4(sc, BGE_MISC_CFG); /* Flush */
1346                 DELAY(40);
1347         }
1348
1349         return(0);
1350 }
1351
1352 static int
1353 bge_blockinit(struct bge_softc *sc)
1354 {
1355         struct bge_rcb *rcb;
1356         bus_size_t vrcb;
1357         bge_hostaddr taddr;
1358         uint32_t val;
1359         int i;
1360
1361         /*
1362          * Initialize the memory window pointer register so that
1363          * we can access the first 32K of internal NIC RAM. This will
1364          * allow us to set up the TX send ring RCBs and the RX return
1365          * ring RCBs, plus other things which live in NIC memory.
1366          */
1367         CSR_WRITE_4(sc, BGE_PCI_MEMWIN_BASEADDR, 0);
1368
1369         /* Note: the BCM5704 has a smaller mbuf space than other chips. */
1370
1371         if (!BGE_IS_5705_PLUS(sc)) {
1372                 /* Configure mbuf memory pool */
1373                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_BASEADDR, BGE_BUFFPOOL_1);
1374                 if (sc->bge_asicrev == BGE_ASICREV_BCM5704)
1375                         CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_LEN, 0x10000);
1376                 else
1377                         CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_LEN, 0x18000);
1378
1379                 /* Configure DMA resource pool */
1380                 CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_BASEADDR,
1381                     BGE_DMA_DESCRIPTORS);
1382                 CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_LEN, 0x2000);
1383         }
1384
1385         /* Configure mbuf pool watermarks */
1386         if (!BGE_IS_5705_PLUS(sc)) {
1387                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x50);
1388                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x20);
1389                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0x60);
1390         } else if (sc->bge_asicrev == BGE_ASICREV_BCM5906) {
1391                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x0);
1392                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x04);
1393                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0x10);
1394         } else {
1395                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x0);
1396                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x10);
1397                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0x60);
1398         }
1399
1400         /* Configure DMA resource watermarks */
1401         CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_LOWAT, 5);
1402         CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_HIWAT, 10);
1403
1404         /* Enable buffer manager */
1405         if (!BGE_IS_5705_PLUS(sc)) {
1406                 CSR_WRITE_4(sc, BGE_BMAN_MODE,
1407                     BGE_BMANMODE_ENABLE|BGE_BMANMODE_LOMBUF_ATTN);
1408
1409                 /* Poll for buffer manager start indication */
1410                 for (i = 0; i < BGE_TIMEOUT; i++) {
1411                         if (CSR_READ_4(sc, BGE_BMAN_MODE) & BGE_BMANMODE_ENABLE)
1412                                 break;
1413                         DELAY(10);
1414                 }
1415
1416                 if (i == BGE_TIMEOUT) {
1417                         if_printf(&sc->arpcom.ac_if,
1418                                   "buffer manager failed to start\n");
1419                         return(ENXIO);
1420                 }
1421         }
1422
1423         /* Enable flow-through queues */
1424         CSR_WRITE_4(sc, BGE_FTQ_RESET, 0xFFFFFFFF);
1425         CSR_WRITE_4(sc, BGE_FTQ_RESET, 0);
1426
1427         /* Wait until queue initialization is complete */
1428         for (i = 0; i < BGE_TIMEOUT; i++) {
1429                 if (CSR_READ_4(sc, BGE_FTQ_RESET) == 0)
1430                         break;
1431                 DELAY(10);
1432         }
1433
1434         if (i == BGE_TIMEOUT) {
1435                 if_printf(&sc->arpcom.ac_if,
1436                           "flow-through queue init failed\n");
1437                 return(ENXIO);
1438         }
1439
1440         /* Initialize the standard RX ring control block */
1441         rcb = &sc->bge_ldata.bge_info.bge_std_rx_rcb;
1442         rcb->bge_hostaddr.bge_addr_lo =
1443             BGE_ADDR_LO(sc->bge_ldata.bge_rx_std_ring_paddr);
1444         rcb->bge_hostaddr.bge_addr_hi =
1445             BGE_ADDR_HI(sc->bge_ldata.bge_rx_std_ring_paddr);
1446         if (BGE_IS_5705_PLUS(sc))
1447                 rcb->bge_maxlen_flags = BGE_RCB_MAXLEN_FLAGS(512, 0);
1448         else
1449                 rcb->bge_maxlen_flags =
1450                     BGE_RCB_MAXLEN_FLAGS(BGE_MAX_FRAMELEN, 0);
1451         rcb->bge_nicaddr = BGE_STD_RX_RINGS;
1452         CSR_WRITE_4(sc, BGE_RX_STD_RCB_HADDR_HI, rcb->bge_hostaddr.bge_addr_hi);
1453         CSR_WRITE_4(sc, BGE_RX_STD_RCB_HADDR_LO, rcb->bge_hostaddr.bge_addr_lo);
1454         CSR_WRITE_4(sc, BGE_RX_STD_RCB_MAXLEN_FLAGS, rcb->bge_maxlen_flags);
1455         CSR_WRITE_4(sc, BGE_RX_STD_RCB_NICADDR, rcb->bge_nicaddr);
1456
1457         /*
1458          * Initialize the jumbo RX ring control block
1459          * We set the 'ring disabled' bit in the flags
1460          * field until we're actually ready to start
1461          * using this ring (i.e. once we set the MTU
1462          * high enough to require it).
1463          */
1464         if (BGE_IS_JUMBO_CAPABLE(sc)) {
1465                 rcb = &sc->bge_ldata.bge_info.bge_jumbo_rx_rcb;
1466
1467                 rcb->bge_hostaddr.bge_addr_lo =
1468                     BGE_ADDR_LO(sc->bge_ldata.bge_rx_jumbo_ring_paddr);
1469                 rcb->bge_hostaddr.bge_addr_hi =
1470                     BGE_ADDR_HI(sc->bge_ldata.bge_rx_jumbo_ring_paddr);
1471                 rcb->bge_maxlen_flags =
1472                     BGE_RCB_MAXLEN_FLAGS(BGE_MAX_FRAMELEN,
1473                     BGE_RCB_FLAG_RING_DISABLED);
1474                 rcb->bge_nicaddr = BGE_JUMBO_RX_RINGS;
1475                 CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_HADDR_HI,
1476                     rcb->bge_hostaddr.bge_addr_hi);
1477                 CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_HADDR_LO,
1478                     rcb->bge_hostaddr.bge_addr_lo);
1479                 CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_MAXLEN_FLAGS,
1480                     rcb->bge_maxlen_flags);
1481                 CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_NICADDR, rcb->bge_nicaddr);
1482
1483                 /* Set up dummy disabled mini ring RCB */
1484                 rcb = &sc->bge_ldata.bge_info.bge_mini_rx_rcb;
1485                 rcb->bge_maxlen_flags =
1486                     BGE_RCB_MAXLEN_FLAGS(0, BGE_RCB_FLAG_RING_DISABLED);
1487                 CSR_WRITE_4(sc, BGE_RX_MINI_RCB_MAXLEN_FLAGS,
1488                     rcb->bge_maxlen_flags);
1489         }
1490
1491         /*
1492          * Set the BD ring replentish thresholds. The recommended
1493          * values are 1/8th the number of descriptors allocated to
1494          * each ring.
1495          */
1496         if (BGE_IS_5705_PLUS(sc))
1497                 val = 8;
1498         else
1499                 val = BGE_STD_RX_RING_CNT / 8;
1500         CSR_WRITE_4(sc, BGE_RBDI_STD_REPL_THRESH, val);
1501         if (BGE_IS_JUMBO_CAPABLE(sc)) {
1502                 CSR_WRITE_4(sc, BGE_RBDI_JUMBO_REPL_THRESH,
1503                     BGE_JUMBO_RX_RING_CNT/8);
1504         }
1505
1506         /*
1507          * Disable all unused send rings by setting the 'ring disabled'
1508          * bit in the flags field of all the TX send ring control blocks.
1509          * These are located in NIC memory.
1510          */
1511         vrcb = BGE_MEMWIN_START + BGE_SEND_RING_RCB;
1512         for (i = 0; i < BGE_TX_RINGS_EXTSSRAM_MAX; i++) {
1513                 RCB_WRITE_4(sc, vrcb, bge_maxlen_flags,
1514                     BGE_RCB_MAXLEN_FLAGS(0, BGE_RCB_FLAG_RING_DISABLED));
1515                 RCB_WRITE_4(sc, vrcb, bge_nicaddr, 0);
1516                 vrcb += sizeof(struct bge_rcb);
1517         }
1518
1519         /* Configure TX RCB 0 (we use only the first ring) */
1520         vrcb = BGE_MEMWIN_START + BGE_SEND_RING_RCB;
1521         BGE_HOSTADDR(taddr, sc->bge_ldata.bge_tx_ring_paddr);
1522         RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_hi, taddr.bge_addr_hi);
1523         RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_lo, taddr.bge_addr_lo);
1524         RCB_WRITE_4(sc, vrcb, bge_nicaddr,
1525             BGE_NIC_TXRING_ADDR(0, BGE_TX_RING_CNT));
1526         if (!BGE_IS_5705_PLUS(sc)) {
1527                 RCB_WRITE_4(sc, vrcb, bge_maxlen_flags,
1528                     BGE_RCB_MAXLEN_FLAGS(BGE_TX_RING_CNT, 0));
1529         }
1530
1531         /* Disable all unused RX return rings */
1532         vrcb = BGE_MEMWIN_START + BGE_RX_RETURN_RING_RCB;
1533         for (i = 0; i < BGE_RX_RINGS_MAX; i++) {
1534                 RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_hi, 0);
1535                 RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_lo, 0);
1536                 RCB_WRITE_4(sc, vrcb, bge_maxlen_flags,
1537                     BGE_RCB_MAXLEN_FLAGS(sc->bge_return_ring_cnt,
1538                     BGE_RCB_FLAG_RING_DISABLED));
1539                 RCB_WRITE_4(sc, vrcb, bge_nicaddr, 0);
1540                 bge_writembx(sc, BGE_MBX_RX_CONS0_LO +
1541                     (i * (sizeof(uint64_t))), 0);
1542                 vrcb += sizeof(struct bge_rcb);
1543         }
1544
1545         /* Initialize RX ring indexes */
1546         bge_writembx(sc, BGE_MBX_RX_STD_PROD_LO, 0);
1547         if (BGE_IS_JUMBO_CAPABLE(sc))
1548                 bge_writembx(sc, BGE_MBX_RX_JUMBO_PROD_LO, 0);
1549         bge_writembx(sc, BGE_MBX_RX_MINI_PROD_LO, 0);
1550
1551         /*
1552          * Set up RX return ring 0
1553          * Note that the NIC address for RX return rings is 0x00000000.
1554          * The return rings live entirely within the host, so the
1555          * nicaddr field in the RCB isn't used.
1556          */
1557         vrcb = BGE_MEMWIN_START + BGE_RX_RETURN_RING_RCB;
1558         BGE_HOSTADDR(taddr, sc->bge_ldata.bge_rx_return_ring_paddr);
1559         RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_hi, taddr.bge_addr_hi);
1560         RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_lo, taddr.bge_addr_lo);
1561         RCB_WRITE_4(sc, vrcb, bge_nicaddr, 0x00000000);
1562         RCB_WRITE_4(sc, vrcb, bge_maxlen_flags,
1563             BGE_RCB_MAXLEN_FLAGS(sc->bge_return_ring_cnt, 0));
1564
1565         /* Set random backoff seed for TX */
1566         CSR_WRITE_4(sc, BGE_TX_RANDOM_BACKOFF,
1567             sc->arpcom.ac_enaddr[0] + sc->arpcom.ac_enaddr[1] +
1568             sc->arpcom.ac_enaddr[2] + sc->arpcom.ac_enaddr[3] +
1569             sc->arpcom.ac_enaddr[4] + sc->arpcom.ac_enaddr[5] +
1570             BGE_TX_BACKOFF_SEED_MASK);
1571
1572         /* Set inter-packet gap */
1573         CSR_WRITE_4(sc, BGE_TX_LENGTHS, 0x2620);
1574
1575         /*
1576          * Specify which ring to use for packets that don't match
1577          * any RX rules.
1578          */
1579         CSR_WRITE_4(sc, BGE_RX_RULES_CFG, 0x08);
1580
1581         /*
1582          * Configure number of RX lists. One interrupt distribution
1583          * list, sixteen active lists, one bad frames class.
1584          */
1585         CSR_WRITE_4(sc, BGE_RXLP_CFG, 0x181);
1586
1587         /* Inialize RX list placement stats mask. */
1588         CSR_WRITE_4(sc, BGE_RXLP_STATS_ENABLE_MASK, 0x007FFFFF);
1589         CSR_WRITE_4(sc, BGE_RXLP_STATS_CTL, 0x1);
1590
1591         /* Disable host coalescing until we get it set up */
1592         CSR_WRITE_4(sc, BGE_HCC_MODE, 0x00000000);
1593
1594         /* Poll to make sure it's shut down. */
1595         for (i = 0; i < BGE_TIMEOUT; i++) {
1596                 if (!(CSR_READ_4(sc, BGE_HCC_MODE) & BGE_HCCMODE_ENABLE))
1597                         break;
1598                 DELAY(10);
1599         }
1600
1601         if (i == BGE_TIMEOUT) {
1602                 if_printf(&sc->arpcom.ac_if,
1603                           "host coalescing engine failed to idle\n");
1604                 return(ENXIO);
1605         }
1606
1607         /* Set up host coalescing defaults */
1608         CSR_WRITE_4(sc, BGE_HCC_RX_COAL_TICKS, sc->bge_rx_coal_ticks);
1609         CSR_WRITE_4(sc, BGE_HCC_TX_COAL_TICKS, sc->bge_tx_coal_ticks);
1610         CSR_WRITE_4(sc, BGE_HCC_RX_MAX_COAL_BDS, sc->bge_rx_max_coal_bds);
1611         CSR_WRITE_4(sc, BGE_HCC_TX_MAX_COAL_BDS, sc->bge_tx_max_coal_bds);
1612         if (!BGE_IS_5705_PLUS(sc)) {
1613                 CSR_WRITE_4(sc, BGE_HCC_RX_COAL_TICKS_INT, 0);
1614                 CSR_WRITE_4(sc, BGE_HCC_TX_COAL_TICKS_INT, 0);
1615         }
1616         CSR_WRITE_4(sc, BGE_HCC_RX_MAX_COAL_BDS_INT, 1);
1617         CSR_WRITE_4(sc, BGE_HCC_TX_MAX_COAL_BDS_INT, 1);
1618
1619         /* Set up address of statistics block */
1620         if (!BGE_IS_5705_PLUS(sc)) {
1621                 CSR_WRITE_4(sc, BGE_HCC_STATS_ADDR_HI,
1622                     BGE_ADDR_HI(sc->bge_ldata.bge_stats_paddr));
1623                 CSR_WRITE_4(sc, BGE_HCC_STATS_ADDR_LO,
1624                     BGE_ADDR_LO(sc->bge_ldata.bge_stats_paddr));
1625
1626                 CSR_WRITE_4(sc, BGE_HCC_STATS_BASEADDR, BGE_STATS_BLOCK);
1627                 CSR_WRITE_4(sc, BGE_HCC_STATUSBLK_BASEADDR, BGE_STATUS_BLOCK);
1628                 CSR_WRITE_4(sc, BGE_HCC_STATS_TICKS, sc->bge_stat_ticks);
1629         }
1630
1631         /* Set up address of status block */
1632         bzero(sc->bge_ldata.bge_status_block, BGE_STATUS_BLK_SZ);
1633         CSR_WRITE_4(sc, BGE_HCC_STATUSBLK_ADDR_HI,
1634             BGE_ADDR_HI(sc->bge_ldata.bge_status_block_paddr));
1635         CSR_WRITE_4(sc, BGE_HCC_STATUSBLK_ADDR_LO,
1636             BGE_ADDR_LO(sc->bge_ldata.bge_status_block_paddr));
1637
1638         /*
1639          * Set up status block partail update size.
1640          *
1641          * Because only single TX ring, RX produce ring and Rx return ring
1642          * are used, ask device to update only minimum part of status block
1643          * except for BCM5700 AX/BX, whose status block partial update size
1644          * can't be configured.
1645          */
1646         if (sc->bge_asicrev == BGE_ASICREV_BCM5700 &&
1647             sc->bge_chipid != BGE_CHIPID_BCM5700_C0) {
1648                 /* XXX Actually reserved on BCM5700 AX/BX */
1649                 val = BGE_STATBLKSZ_FULL;
1650         } else {
1651                 val = BGE_STATBLKSZ_32BYTE;
1652         }
1653
1654         /* Turn on host coalescing state machine */
1655         CSR_WRITE_4(sc, BGE_HCC_MODE, val | BGE_HCCMODE_ENABLE);
1656
1657         /* Turn on RX BD completion state machine and enable attentions */
1658         CSR_WRITE_4(sc, BGE_RBDC_MODE,
1659             BGE_RBDCMODE_ENABLE|BGE_RBDCMODE_ATTN);
1660
1661         /* Turn on RX list placement state machine */
1662         CSR_WRITE_4(sc, BGE_RXLP_MODE, BGE_RXLPMODE_ENABLE);
1663
1664         /* Turn on RX list selector state machine. */
1665         if (!BGE_IS_5705_PLUS(sc))
1666                 CSR_WRITE_4(sc, BGE_RXLS_MODE, BGE_RXLSMODE_ENABLE);
1667
1668         val = BGE_MACMODE_TXDMA_ENB | BGE_MACMODE_RXDMA_ENB |
1669             BGE_MACMODE_RX_STATS_CLEAR | BGE_MACMODE_TX_STATS_CLEAR |
1670             BGE_MACMODE_RX_STATS_ENB | BGE_MACMODE_TX_STATS_ENB |
1671             BGE_MACMODE_FRMHDR_DMA_ENB;
1672
1673         if (sc->bge_flags & BGE_FLAG_TBI)
1674                 val |= BGE_PORTMODE_TBI;
1675         else if (sc->bge_flags & BGE_FLAG_MII_SERDES)
1676                 val |= BGE_PORTMODE_GMII;
1677         else
1678                 val |= BGE_PORTMODE_MII;
1679
1680         /* Turn on DMA, clear stats */
1681         CSR_WRITE_4(sc, BGE_MAC_MODE, val);
1682
1683         /* Set misc. local control, enable interrupts on attentions */
1684         CSR_WRITE_4(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_INTR_ONATTN);
1685
1686 #ifdef notdef
1687         /* Assert GPIO pins for PHY reset */
1688         BGE_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_MISCIO_OUT0|
1689             BGE_MLC_MISCIO_OUT1|BGE_MLC_MISCIO_OUT2);
1690         BGE_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_MISCIO_OUTEN0|
1691             BGE_MLC_MISCIO_OUTEN1|BGE_MLC_MISCIO_OUTEN2);
1692 #endif
1693
1694         /* Turn on DMA completion state machine */
1695         if (!BGE_IS_5705_PLUS(sc))
1696                 CSR_WRITE_4(sc, BGE_DMAC_MODE, BGE_DMACMODE_ENABLE);
1697
1698         /* Turn on write DMA state machine */
1699         val = BGE_WDMAMODE_ENABLE|BGE_WDMAMODE_ALL_ATTNS;
1700         if (BGE_IS_5755_PLUS(sc)) {
1701                 /* Enable host coalescing bug fix. */
1702                 val |= BGE_WDMAMODE_STATUS_TAG_FIX;
1703         }
1704         CSR_WRITE_4(sc, BGE_WDMA_MODE, val);
1705         DELAY(40);
1706
1707         /* Turn on read DMA state machine */
1708         val = BGE_RDMAMODE_ENABLE | BGE_RDMAMODE_ALL_ATTNS;
1709         if (sc->bge_asicrev == BGE_ASICREV_BCM5784 ||
1710             sc->bge_asicrev == BGE_ASICREV_BCM5785 ||
1711             sc->bge_asicrev == BGE_ASICREV_BCM57780)
1712                 val |= BGE_RDMAMODE_BD_SBD_CRPT_ATTN |
1713                   BGE_RDMAMODE_MBUF_RBD_CRPT_ATTN |
1714                   BGE_RDMAMODE_MBUF_SBD_CRPT_ATTN;
1715         if (sc->bge_flags & BGE_FLAG_PCIE)
1716                 val |= BGE_RDMAMODE_FIFO_LONG_BURST;
1717         CSR_WRITE_4(sc, BGE_RDMA_MODE, val);
1718         DELAY(40);
1719
1720         /* Turn on RX data completion state machine */
1721         CSR_WRITE_4(sc, BGE_RDC_MODE, BGE_RDCMODE_ENABLE);
1722
1723         /* Turn on RX BD initiator state machine */
1724         CSR_WRITE_4(sc, BGE_RBDI_MODE, BGE_RBDIMODE_ENABLE);
1725
1726         /* Turn on RX data and RX BD initiator state machine */
1727         CSR_WRITE_4(sc, BGE_RDBDI_MODE, BGE_RDBDIMODE_ENABLE);
1728
1729         /* Turn on Mbuf cluster free state machine */
1730         if (!BGE_IS_5705_PLUS(sc))
1731                 CSR_WRITE_4(sc, BGE_MBCF_MODE, BGE_MBCFMODE_ENABLE);
1732
1733         /* Turn on send BD completion state machine */
1734         CSR_WRITE_4(sc, BGE_SBDC_MODE, BGE_SBDCMODE_ENABLE);
1735
1736         /* Turn on send data completion state machine */
1737         val = BGE_SDCMODE_ENABLE;
1738         if (sc->bge_asicrev == BGE_ASICREV_BCM5761)
1739                 val |= BGE_SDCMODE_CDELAY; 
1740         CSR_WRITE_4(sc, BGE_SDC_MODE, val);
1741
1742         /* Turn on send data initiator state machine */
1743         CSR_WRITE_4(sc, BGE_SDI_MODE, BGE_SDIMODE_ENABLE);
1744
1745         /* Turn on send BD initiator state machine */
1746         CSR_WRITE_4(sc, BGE_SBDI_MODE, BGE_SBDIMODE_ENABLE);
1747
1748         /* Turn on send BD selector state machine */
1749         CSR_WRITE_4(sc, BGE_SRS_MODE, BGE_SRSMODE_ENABLE);
1750
1751         CSR_WRITE_4(sc, BGE_SDI_STATS_ENABLE_MASK, 0x007FFFFF);
1752         CSR_WRITE_4(sc, BGE_SDI_STATS_CTL,
1753             BGE_SDISTATSCTL_ENABLE|BGE_SDISTATSCTL_FASTER);
1754
1755         /* ack/clear link change events */
1756         CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED|
1757             BGE_MACSTAT_CFG_CHANGED|BGE_MACSTAT_MI_COMPLETE|
1758             BGE_MACSTAT_LINK_CHANGED);
1759         CSR_WRITE_4(sc, BGE_MI_STS, 0);
1760
1761         /* Enable PHY auto polling (for MII/GMII only) */
1762         if (sc->bge_flags & BGE_FLAG_TBI) {
1763                 CSR_WRITE_4(sc, BGE_MI_STS, BGE_MISTS_LINK);
1764         } else {
1765                 BGE_SETBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL|10<<16);
1766                 if (sc->bge_asicrev == BGE_ASICREV_BCM5700 &&
1767                     sc->bge_chipid != BGE_CHIPID_BCM5700_B2) {
1768                         CSR_WRITE_4(sc, BGE_MAC_EVT_ENB,
1769                             BGE_EVTENB_MI_INTERRUPT);
1770                 }
1771         }
1772
1773         /*
1774          * Clear any pending link state attention.
1775          * Otherwise some link state change events may be lost until attention
1776          * is cleared by bge_intr() -> bge_softc.bge_link_upd() sequence.
1777          * It's not necessary on newer BCM chips - perhaps enabling link
1778          * state change attentions implies clearing pending attention.
1779          */
1780         CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED|
1781             BGE_MACSTAT_CFG_CHANGED|BGE_MACSTAT_MI_COMPLETE|
1782             BGE_MACSTAT_LINK_CHANGED);
1783
1784         /* Enable link state change attentions. */
1785         BGE_SETBIT(sc, BGE_MAC_EVT_ENB, BGE_EVTENB_LINK_CHANGED);
1786
1787         return(0);
1788 }
1789
1790 /*
1791  * Probe for a Broadcom chip. Check the PCI vendor and device IDs
1792  * against our list and return its name if we find a match. Note
1793  * that since the Broadcom controller contains VPD support, we
1794  * can get the device name string from the controller itself instead
1795  * of the compiled-in string. This is a little slow, but it guarantees
1796  * we'll always announce the right product name.
1797  */
1798 static int
1799 bge_probe(device_t dev)
1800 {
1801         const struct bge_type *t;
1802         uint16_t product, vendor;
1803
1804         product = pci_get_device(dev);
1805         vendor = pci_get_vendor(dev);
1806
1807         for (t = bge_devs; t->bge_name != NULL; t++) {
1808                 if (vendor == t->bge_vid && product == t->bge_did)
1809                         break;
1810         }
1811         if (t->bge_name == NULL)
1812                 return(ENXIO);
1813
1814         device_set_desc(dev, t->bge_name);
1815         if (pci_get_subvendor(dev) == PCI_VENDOR_DELL) {
1816                 struct bge_softc *sc = device_get_softc(dev);
1817                 sc->bge_flags |= BGE_FLAG_NO_3LED;
1818         }
1819         return(0);
1820 }
1821
1822 static int
1823 bge_attach(device_t dev)
1824 {
1825         struct ifnet *ifp;
1826         struct bge_softc *sc;
1827         uint32_t hwcfg = 0;
1828         int error = 0, rid;
1829         uint8_t ether_addr[ETHER_ADDR_LEN];
1830
1831         sc = device_get_softc(dev);
1832         sc->bge_dev = dev;
1833         callout_init(&sc->bge_stat_timer);
1834         lwkt_serialize_init(&sc->bge_jslot_serializer);
1835
1836 #ifndef BURN_BRIDGES
1837         if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
1838                 uint32_t irq, mem;
1839
1840                 irq = pci_read_config(dev, PCIR_INTLINE, 4);
1841                 mem = pci_read_config(dev, BGE_PCI_BAR0, 4);
1842
1843                 device_printf(dev, "chip is in D%d power mode "
1844                     "-- setting to D0\n", pci_get_powerstate(dev));
1845
1846                 pci_set_powerstate(dev, PCI_POWERSTATE_D0);
1847
1848                 pci_write_config(dev, PCIR_INTLINE, irq, 4);
1849                 pci_write_config(dev, BGE_PCI_BAR0, mem, 4);
1850         }
1851 #endif  /* !BURN_BRIDGE */
1852
1853         /*
1854          * Map control/status registers.
1855          */
1856         pci_enable_busmaster(dev);
1857
1858         rid = BGE_PCI_BAR0;
1859         sc->bge_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
1860             RF_ACTIVE);
1861
1862         if (sc->bge_res == NULL) {
1863                 device_printf(dev, "couldn't map memory\n");
1864                 return ENXIO;
1865         }
1866
1867         sc->bge_btag = rman_get_bustag(sc->bge_res);
1868         sc->bge_bhandle = rman_get_bushandle(sc->bge_res);
1869
1870         /* Save various chip information */
1871         sc->bge_chipid =
1872             pci_read_config(dev, BGE_PCI_MISC_CTL, 4) >>
1873             BGE_PCIMISCCTL_ASICREV_SHIFT;
1874         if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_USE_PRODID_REG)
1875                 sc->bge_chipid = pci_read_config(dev, BGE_PCI_PRODID_ASICREV, 4);
1876         sc->bge_asicrev = BGE_ASICREV(sc->bge_chipid);
1877         sc->bge_chiprev = BGE_CHIPREV(sc->bge_chipid);
1878
1879         /* Save chipset family. */
1880         switch (sc->bge_asicrev) {
1881         case BGE_ASICREV_BCM5755:
1882         case BGE_ASICREV_BCM5761:
1883         case BGE_ASICREV_BCM5784:
1884         case BGE_ASICREV_BCM5785:
1885         case BGE_ASICREV_BCM5787:
1886         case BGE_ASICREV_BCM57780:
1887             sc->bge_flags |= BGE_FLAG_5755_PLUS | BGE_FLAG_575X_PLUS |
1888                 BGE_FLAG_5705_PLUS;
1889             break;
1890
1891         case BGE_ASICREV_BCM5700:
1892         case BGE_ASICREV_BCM5701:
1893         case BGE_ASICREV_BCM5703:
1894         case BGE_ASICREV_BCM5704:
1895                 sc->bge_flags |= BGE_FLAG_5700_FAMILY | BGE_FLAG_JUMBO;
1896                 break;
1897
1898         case BGE_ASICREV_BCM5714_A0:
1899         case BGE_ASICREV_BCM5780:
1900         case BGE_ASICREV_BCM5714:
1901                 sc->bge_flags |= BGE_FLAG_5714_FAMILY;
1902                 /* Fall through */
1903
1904         case BGE_ASICREV_BCM5750:
1905         case BGE_ASICREV_BCM5752:
1906         case BGE_ASICREV_BCM5906:
1907                 sc->bge_flags |= BGE_FLAG_575X_PLUS;
1908                 /* Fall through */
1909
1910         case BGE_ASICREV_BCM5705:
1911                 sc->bge_flags |= BGE_FLAG_5705_PLUS;
1912                 break;
1913         }
1914
1915         if (sc->bge_asicrev == BGE_ASICREV_BCM5906)
1916                 sc->bge_flags |= BGE_FLAG_NO_EEPROM;
1917
1918         /*
1919          * Set various quirk flags.
1920          */
1921
1922         sc->bge_flags |= BGE_FLAG_ETH_WIRESPEED;
1923         if (sc->bge_asicrev == BGE_ASICREV_BCM5700 ||
1924             (sc->bge_asicrev == BGE_ASICREV_BCM5705 &&
1925              (sc->bge_chipid != BGE_CHIPID_BCM5705_A0 &&
1926               sc->bge_chipid != BGE_CHIPID_BCM5705_A1)) ||
1927             sc->bge_asicrev == BGE_ASICREV_BCM5906)
1928                 sc->bge_flags &= ~BGE_FLAG_ETH_WIRESPEED;
1929
1930         if (sc->bge_chipid == BGE_CHIPID_BCM5701_A0 ||
1931             sc->bge_chipid == BGE_CHIPID_BCM5701_B0)
1932                 sc->bge_flags |= BGE_FLAG_CRC_BUG;
1933
1934         if (sc->bge_chiprev == BGE_CHIPREV_5703_AX ||
1935             sc->bge_chiprev == BGE_CHIPREV_5704_AX)
1936                 sc->bge_flags |= BGE_FLAG_ADC_BUG;
1937
1938         if (sc->bge_chipid == BGE_CHIPID_BCM5704_A0)
1939                 sc->bge_flags |= BGE_FLAG_5704_A0_BUG;
1940
1941         if (BGE_IS_5705_PLUS(sc)) {
1942                 if (sc->bge_asicrev == BGE_ASICREV_BCM5755 ||
1943                     sc->bge_asicrev == BGE_ASICREV_BCM5761 ||
1944                     sc->bge_asicrev == BGE_ASICREV_BCM5784 ||
1945                     sc->bge_asicrev == BGE_ASICREV_BCM5787) {
1946                         uint32_t product = pci_get_device(dev);
1947
1948                         if (product != PCI_PRODUCT_BROADCOM_BCM5722 &&
1949                             product != PCI_PRODUCT_BROADCOM_BCM5756)
1950                                 sc->bge_flags |= BGE_FLAG_JITTER_BUG;
1951                         if (product == PCI_PRODUCT_BROADCOM_BCM5755M)
1952                                 sc->bge_flags |= BGE_FLAG_ADJUST_TRIM;
1953                 } else if (sc->bge_asicrev != BGE_ASICREV_BCM5906) {
1954                         sc->bge_flags |= BGE_FLAG_BER_BUG;
1955                 }
1956         }
1957
1958         /* Allocate interrupt */
1959         rid = 0;
1960
1961         sc->bge_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
1962             RF_SHAREABLE | RF_ACTIVE);
1963
1964         if (sc->bge_irq == NULL) {
1965                 device_printf(dev, "couldn't map interrupt\n");
1966                 error = ENXIO;
1967                 goto fail;
1968         }
1969
1970         /*
1971          * Check if this is a PCI-X or PCI Express device.
1972          */
1973         if (BGE_IS_5705_PLUS(sc)) {
1974                 if (pci_is_pcie(dev)) {
1975                         sc->bge_flags |= BGE_FLAG_PCIE;
1976                         pcie_set_max_readrq(dev, PCIEM_DEVCTL_MAX_READRQ_4096);
1977                 }
1978         } else {
1979                 /*
1980                  * Check if the device is in PCI-X Mode.
1981                  * (This bit is not valid on PCI Express controllers.)
1982                  */
1983                 if ((pci_read_config(sc->bge_dev, BGE_PCI_PCISTATE, 4) &
1984                     BGE_PCISTATE_PCI_BUSMODE) == 0) {
1985                         sc->bge_flags |= BGE_FLAG_PCIX;
1986                         sc->bge_pcixcap = pci_get_pcixcap_ptr(sc->bge_dev);
1987                 }
1988         }
1989
1990         device_printf(dev, "CHIP ID 0x%08x; "
1991                       "ASIC REV 0x%02x; CHIP REV 0x%02x; %s\n",
1992                       sc->bge_chipid, sc->bge_asicrev, sc->bge_chiprev,
1993                       (sc->bge_flags & BGE_FLAG_PCIX) ? "PCI-X"
1994                       : ((sc->bge_flags & BGE_FLAG_PCIE) ?
1995                         "PCI-E" : "PCI"));
1996
1997         /*
1998          * All controllers that are not 5755 or higher have 4GB
1999          * boundary DMA bug.
2000          * Whenever an address crosses a multiple of the 4GB boundary
2001          * (including 4GB, 8Gb, 12Gb, etc.) and makes the transition
2002          * from 0xX_FFFF_FFFF to 0x(X+1)_0000_0000 an internal DMA
2003          * state machine will lockup and cause the device to hang.
2004          */
2005         if (BGE_IS_5755_PLUS(sc) == 0)
2006                 sc->bge_flags |= BGE_FLAG_BOUNDARY_4G;
2007
2008         /*
2009          * The 40bit DMA bug applies to the 5714/5715 controllers and is
2010          * not actually a MAC controller bug but an issue with the embedded
2011          * PCIe to PCI-X bridge in the device. Use 40bit DMA workaround.
2012          */
2013         if (BGE_IS_5714_FAMILY(sc) && (sc->bge_flags & BGE_FLAG_PCIX))
2014                 sc->bge_flags |= BGE_FLAG_MAXADDR_40BIT;
2015
2016         ifp = &sc->arpcom.ac_if;
2017         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
2018
2019         /* Try to reset the chip. */
2020         bge_reset(sc);
2021
2022         if (bge_chipinit(sc)) {
2023                 device_printf(dev, "chip initialization failed\n");
2024                 error = ENXIO;
2025                 goto fail;
2026         }
2027
2028         /*
2029          * Get station address
2030          */
2031         error = bge_get_eaddr(sc, ether_addr);
2032         if (error) {
2033                 device_printf(dev, "failed to read station address\n");
2034                 goto fail;
2035         }
2036
2037         /* 5705/5750 limits RX return ring to 512 entries. */
2038         if (BGE_IS_5705_PLUS(sc))
2039                 sc->bge_return_ring_cnt = BGE_RETURN_RING_CNT_5705;
2040         else
2041                 sc->bge_return_ring_cnt = BGE_RETURN_RING_CNT;
2042
2043         error = bge_dma_alloc(sc);
2044         if (error)
2045                 goto fail;
2046
2047         /* Set default tuneable values. */
2048         sc->bge_stat_ticks = BGE_TICKS_PER_SEC;
2049         sc->bge_rx_coal_ticks = bge_rx_coal_ticks;
2050         sc->bge_tx_coal_ticks = bge_tx_coal_ticks;
2051         sc->bge_rx_max_coal_bds = bge_rx_max_coal_bds;
2052         sc->bge_tx_max_coal_bds = bge_tx_max_coal_bds;
2053
2054         /* Set up ifnet structure */
2055         ifp->if_softc = sc;
2056         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
2057         ifp->if_ioctl = bge_ioctl;
2058         ifp->if_start = bge_start;
2059 #ifdef DEVICE_POLLING
2060         ifp->if_poll = bge_poll;
2061 #endif
2062         ifp->if_watchdog = bge_watchdog;
2063         ifp->if_init = bge_init;
2064         ifp->if_mtu = ETHERMTU;
2065         ifp->if_capabilities = IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_MTU;
2066         ifq_set_maxlen(&ifp->if_snd, BGE_TX_RING_CNT - 1);
2067         ifq_set_ready(&ifp->if_snd);
2068
2069         /*
2070          * 5700 B0 chips do not support checksumming correctly due
2071          * to hardware bugs.
2072          */
2073         if (sc->bge_chipid != BGE_CHIPID_BCM5700_B0) {
2074                 ifp->if_capabilities |= IFCAP_HWCSUM;
2075                 ifp->if_hwassist = BGE_CSUM_FEATURES;
2076         }
2077         ifp->if_capenable = ifp->if_capabilities;
2078
2079         /*
2080          * Figure out what sort of media we have by checking the
2081          * hardware config word in the first 32k of NIC internal memory,
2082          * or fall back to examining the EEPROM if necessary.
2083          * Note: on some BCM5700 cards, this value appears to be unset.
2084          * If that's the case, we have to rely on identifying the NIC
2085          * by its PCI subsystem ID, as we do below for the SysKonnect
2086          * SK-9D41.
2087          */
2088         if (bge_readmem_ind(sc, BGE_SOFTWARE_GENCOMM_SIG) == BGE_MAGIC_NUMBER)
2089                 hwcfg = bge_readmem_ind(sc, BGE_SOFTWARE_GENCOMM_NICCFG);
2090         else {
2091                 if (bge_read_eeprom(sc, (caddr_t)&hwcfg, BGE_EE_HWCFG_OFFSET,
2092                                     sizeof(hwcfg))) {
2093                         device_printf(dev, "failed to read EEPROM\n");
2094                         error = ENXIO;
2095                         goto fail;
2096                 }
2097                 hwcfg = ntohl(hwcfg);
2098         }
2099
2100         /* The SysKonnect SK-9D41 is a 1000baseSX card. */
2101         if (pci_get_subvendor(dev) == PCI_PRODUCT_SCHNEIDERKOCH_SK_9D41 ||
2102             (hwcfg & BGE_HWCFG_MEDIA) == BGE_MEDIA_FIBER) {
2103                 if (BGE_IS_5714_FAMILY(sc))
2104                         sc->bge_flags |= BGE_FLAG_MII_SERDES;
2105                 else
2106                         sc->bge_flags |= BGE_FLAG_TBI;
2107         }
2108
2109         if (sc->bge_flags & BGE_FLAG_TBI) {
2110                 ifmedia_init(&sc->bge_ifmedia, IFM_IMASK,
2111                     bge_ifmedia_upd, bge_ifmedia_sts);
2112                 ifmedia_add(&sc->bge_ifmedia, IFM_ETHER|IFM_1000_SX, 0, NULL);
2113                 ifmedia_add(&sc->bge_ifmedia,
2114                     IFM_ETHER|IFM_1000_SX|IFM_FDX, 0, NULL);
2115                 ifmedia_add(&sc->bge_ifmedia, IFM_ETHER|IFM_AUTO, 0, NULL);
2116                 ifmedia_set(&sc->bge_ifmedia, IFM_ETHER|IFM_AUTO);
2117                 sc->bge_ifmedia.ifm_media = sc->bge_ifmedia.ifm_cur->ifm_media;
2118         } else {
2119                 /*
2120                  * Do transceiver setup.
2121                  */
2122                 if (mii_phy_probe(dev, &sc->bge_miibus,
2123                     bge_ifmedia_upd, bge_ifmedia_sts)) {
2124                         device_printf(dev, "MII without any PHY!\n");
2125                         error = ENXIO;
2126                         goto fail;
2127                 }
2128         }
2129
2130         /*
2131          * When using the BCM5701 in PCI-X mode, data corruption has
2132          * been observed in the first few bytes of some received packets.
2133          * Aligning the packet buffer in memory eliminates the corruption.
2134          * Unfortunately, this misaligns the packet payloads.  On platforms
2135          * which do not support unaligned accesses, we will realign the
2136          * payloads by copying the received packets.
2137          */
2138         if (sc->bge_asicrev == BGE_ASICREV_BCM5701 &&
2139             (sc->bge_flags & BGE_FLAG_PCIX))
2140                 sc->bge_flags |= BGE_FLAG_RX_ALIGNBUG;
2141
2142         if (sc->bge_asicrev == BGE_ASICREV_BCM5700 &&
2143             sc->bge_chipid != BGE_CHIPID_BCM5700_B2) {
2144                 sc->bge_link_upd = bge_bcm5700_link_upd;
2145                 sc->bge_link_chg = BGE_MACSTAT_MI_INTERRUPT;
2146         } else if (sc->bge_flags & BGE_FLAG_TBI) {
2147                 sc->bge_link_upd = bge_tbi_link_upd;
2148                 sc->bge_link_chg = BGE_MACSTAT_LINK_CHANGED;
2149         } else {
2150                 sc->bge_link_upd = bge_copper_link_upd;
2151                 sc->bge_link_chg = BGE_MACSTAT_LINK_CHANGED;
2152         }
2153
2154         /*
2155          * Create sysctl nodes.
2156          */
2157         sysctl_ctx_init(&sc->bge_sysctl_ctx);
2158         sc->bge_sysctl_tree = SYSCTL_ADD_NODE(&sc->bge_sysctl_ctx,
2159                                               SYSCTL_STATIC_CHILDREN(_hw),
2160                                               OID_AUTO,
2161                                               device_get_nameunit(dev),
2162                                               CTLFLAG_RD, 0, "");
2163         if (sc->bge_sysctl_tree == NULL) {
2164                 device_printf(dev, "can't add sysctl node\n");
2165                 error = ENXIO;
2166                 goto fail;
2167         }
2168
2169         SYSCTL_ADD_PROC(&sc->bge_sysctl_ctx,
2170                         SYSCTL_CHILDREN(sc->bge_sysctl_tree),
2171                         OID_AUTO, "rx_coal_ticks",
2172                         CTLTYPE_INT | CTLFLAG_RW,
2173                         sc, 0, bge_sysctl_rx_coal_ticks, "I",
2174                         "Receive coalescing ticks (usec).");
2175         SYSCTL_ADD_PROC(&sc->bge_sysctl_ctx,
2176                         SYSCTL_CHILDREN(sc->bge_sysctl_tree),
2177                         OID_AUTO, "tx_coal_ticks",
2178                         CTLTYPE_INT | CTLFLAG_RW,
2179                         sc, 0, bge_sysctl_tx_coal_ticks, "I",
2180                         "Transmit coalescing ticks (usec).");
2181         SYSCTL_ADD_PROC(&sc->bge_sysctl_ctx,
2182                         SYSCTL_CHILDREN(sc->bge_sysctl_tree),
2183                         OID_AUTO, "rx_max_coal_bds",
2184                         CTLTYPE_INT | CTLFLAG_RW,
2185                         sc, 0, bge_sysctl_rx_max_coal_bds, "I",
2186                         "Receive max coalesced BD count.");
2187         SYSCTL_ADD_PROC(&sc->bge_sysctl_ctx,
2188                         SYSCTL_CHILDREN(sc->bge_sysctl_tree),
2189                         OID_AUTO, "tx_max_coal_bds",
2190                         CTLTYPE_INT | CTLFLAG_RW,
2191                         sc, 0, bge_sysctl_tx_max_coal_bds, "I",
2192                         "Transmit max coalesced BD count.");
2193
2194         if (sc->bge_flags & BGE_FLAG_PCIE) {
2195                 /*
2196                  * A common design characteristic for many Broadcom
2197                  * client controllers is that they only support a
2198                  * single outstanding DMA read operation on the PCIe
2199                  * bus. This means that it will take twice as long to
2200                  * fetch a TX frame that is split into header and
2201                  * payload buffers as it does to fetch a single,
2202                  * contiguous TX frame (2 reads vs. 1 read). For these
2203                  * controllers, coalescing buffers to reduce the number
2204                  * of memory reads is effective way to get maximum
2205                  * performance(about 940Mbps).  Without collapsing TX
2206                  * buffers the maximum TCP bulk transfer performance
2207                  * is about 850Mbps. However forcing coalescing mbufs
2208                  * consumes a lot of CPU cycles, so leave it off by
2209                  * default.
2210                  */
2211                 SYSCTL_ADD_INT(&sc->bge_sysctl_ctx,
2212                                SYSCTL_CHILDREN(sc->bge_sysctl_tree),
2213                                OID_AUTO, "force_defrag", CTLFLAG_RW,
2214                                &sc->bge_force_defrag, 0,
2215                                "Force defragment on TX path");
2216         }
2217
2218         /*
2219          * Call MI attach routine.
2220          */
2221         ether_ifattach(ifp, ether_addr, NULL);
2222
2223         error = bus_setup_intr(dev, sc->bge_irq, INTR_MPSAFE,
2224                                bge_intr, sc, &sc->bge_intrhand, 
2225                                ifp->if_serializer);
2226         if (error) {
2227                 ether_ifdetach(ifp);
2228                 device_printf(dev, "couldn't set up irq\n");
2229                 goto fail;
2230         }
2231
2232         ifp->if_cpuid = rman_get_cpuid(sc->bge_irq);
2233         KKASSERT(ifp->if_cpuid >= 0 && ifp->if_cpuid < ncpus);
2234
2235         return(0);
2236 fail:
2237         bge_detach(dev);
2238         return(error);
2239 }
2240
2241 static int
2242 bge_detach(device_t dev)
2243 {
2244         struct bge_softc *sc = device_get_softc(dev);
2245
2246         if (device_is_attached(dev)) {
2247                 struct ifnet *ifp = &sc->arpcom.ac_if;
2248
2249                 lwkt_serialize_enter(ifp->if_serializer);
2250                 bge_stop(sc);
2251                 bge_reset(sc);
2252                 bus_teardown_intr(dev, sc->bge_irq, sc->bge_intrhand);
2253                 lwkt_serialize_exit(ifp->if_serializer);
2254
2255                 ether_ifdetach(ifp);
2256         }
2257
2258         if (sc->bge_flags & BGE_FLAG_TBI)
2259                 ifmedia_removeall(&sc->bge_ifmedia);
2260         if (sc->bge_miibus)
2261                 device_delete_child(dev, sc->bge_miibus);
2262         bus_generic_detach(dev);
2263
2264         if (sc->bge_irq != NULL)
2265                 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->bge_irq);
2266
2267         if (sc->bge_res != NULL)
2268                 bus_release_resource(dev, SYS_RES_MEMORY,
2269                     BGE_PCI_BAR0, sc->bge_res);
2270
2271         if (sc->bge_sysctl_tree != NULL)
2272                 sysctl_ctx_free(&sc->bge_sysctl_ctx);
2273
2274         bge_dma_free(sc);
2275
2276         return 0;
2277 }
2278
2279 static void
2280 bge_reset(struct bge_softc *sc)
2281 {
2282         device_t dev;
2283         uint32_t cachesize, command, pcistate, reset;
2284         void (*write_op)(struct bge_softc *, uint32_t, uint32_t);
2285         int i, val = 0;
2286
2287         dev = sc->bge_dev;
2288
2289         if (BGE_IS_575X_PLUS(sc) && !BGE_IS_5714_FAMILY(sc) &&
2290             sc->bge_asicrev != BGE_ASICREV_BCM5906) {
2291                 if (sc->bge_flags & BGE_FLAG_PCIE)
2292                         write_op = bge_writemem_direct;
2293                 else
2294                         write_op = bge_writemem_ind;
2295         } else {
2296                 write_op = bge_writereg_ind;
2297         }
2298
2299         /* Save some important PCI state. */
2300         cachesize = pci_read_config(dev, BGE_PCI_CACHESZ, 4);
2301         command = pci_read_config(dev, BGE_PCI_CMD, 4);
2302         pcistate = pci_read_config(dev, BGE_PCI_PCISTATE, 4);
2303
2304         pci_write_config(dev, BGE_PCI_MISC_CTL,
2305             BGE_PCIMISCCTL_INDIRECT_ACCESS|BGE_PCIMISCCTL_MASK_PCI_INTR|
2306             BGE_HIF_SWAP_OPTIONS|BGE_PCIMISCCTL_PCISTATE_RW, 4);
2307
2308         /* Disable fastboot on controllers that support it. */
2309         if (sc->bge_asicrev == BGE_ASICREV_BCM5752 ||
2310             BGE_IS_5755_PLUS(sc)) {
2311                 if (bootverbose)
2312                         if_printf(&sc->arpcom.ac_if, "Disabling fastboot\n");
2313                 CSR_WRITE_4(sc, BGE_FASTBOOT_PC, 0x0);
2314         }
2315
2316         /*
2317          * Write the magic number to SRAM at offset 0xB50.
2318          * When firmware finishes its initialization it will
2319          * write ~BGE_MAGIC_NUMBER to the same location.
2320          */
2321         bge_writemem_ind(sc, BGE_SOFTWARE_GENCOMM, BGE_MAGIC_NUMBER);
2322
2323         reset = BGE_MISCCFG_RESET_CORE_CLOCKS|(65<<1);
2324
2325         /* XXX: Broadcom Linux driver. */
2326         if (sc->bge_flags & BGE_FLAG_PCIE) {
2327                 if (CSR_READ_4(sc, 0x7e2c) == 0x60)     /* PCIE 1.0 */
2328                         CSR_WRITE_4(sc, 0x7e2c, 0x20);
2329                 if (sc->bge_chipid != BGE_CHIPID_BCM5750_A0) {
2330                         /* Prevent PCIE link training during global reset */
2331                         CSR_WRITE_4(sc, BGE_MISC_CFG, (1<<29));
2332                         reset |= (1<<29);
2333                 }
2334         }
2335
2336         /* 
2337          * Set GPHY Power Down Override to leave GPHY
2338          * powered up in D0 uninitialized.
2339          */
2340         if (BGE_IS_5705_PLUS(sc))
2341                 reset |= BGE_MISCCFG_GPHY_PD_OVERRIDE;
2342
2343         /* Issue global reset */
2344         write_op(sc, BGE_MISC_CFG, reset);
2345
2346         if (sc->bge_asicrev == BGE_ASICREV_BCM5906) {
2347                 uint32_t status, ctrl;
2348
2349                 status = CSR_READ_4(sc, BGE_VCPU_STATUS);
2350                 CSR_WRITE_4(sc, BGE_VCPU_STATUS,
2351                     status | BGE_VCPU_STATUS_DRV_RESET);
2352                 ctrl = CSR_READ_4(sc, BGE_VCPU_EXT_CTRL);
2353                 CSR_WRITE_4(sc, BGE_VCPU_EXT_CTRL,
2354                     ctrl & ~BGE_VCPU_EXT_CTRL_HALT_CPU);
2355         }
2356
2357         DELAY(1000);
2358
2359         /* XXX: Broadcom Linux driver. */
2360         if (sc->bge_flags & BGE_FLAG_PCIE) {
2361                 if (sc->bge_chipid == BGE_CHIPID_BCM5750_A0) {
2362                         uint32_t v;
2363
2364                         DELAY(500000); /* wait for link training to complete */
2365                         v = pci_read_config(dev, 0xc4, 4);
2366                         pci_write_config(dev, 0xc4, v | (1<<15), 4);
2367                 }
2368                 /*
2369                  * Set PCIE max payload size to 128 bytes and
2370                  * clear error status.
2371                  */
2372                 pci_write_config(dev, 0xd8, 0xf5000, 4);
2373         }
2374
2375         /* Reset some of the PCI state that got zapped by reset */
2376         pci_write_config(dev, BGE_PCI_MISC_CTL,
2377             BGE_PCIMISCCTL_INDIRECT_ACCESS|BGE_PCIMISCCTL_MASK_PCI_INTR|
2378             BGE_HIF_SWAP_OPTIONS|BGE_PCIMISCCTL_PCISTATE_RW, 4);
2379         pci_write_config(dev, BGE_PCI_CACHESZ, cachesize, 4);
2380         pci_write_config(dev, BGE_PCI_CMD, command, 4);
2381         write_op(sc, BGE_MISC_CFG, (65 << 1));
2382
2383         /*
2384          * Disable PCI-X relaxed ordering to ensure status block update
2385          * comes first then packet buffer DMA. Otherwise driver may
2386          * read stale status block.
2387          */
2388         if (sc->bge_flags & BGE_FLAG_PCIX) {
2389                 uint16_t devctl;
2390
2391                 devctl = pci_read_config(dev,
2392                     sc->bge_pcixcap + PCIXR_COMMAND, 2);
2393                 devctl &= ~PCIXM_COMMAND_ERO;
2394                 if (sc->bge_asicrev == BGE_ASICREV_BCM5703) {
2395                         devctl &= ~PCIXM_COMMAND_MAX_READ;
2396                         devctl |= PCIXM_COMMAND_MAX_READ_2048;
2397                 } else if (sc->bge_asicrev == BGE_ASICREV_BCM5704) {
2398                         devctl &= ~(PCIXM_COMMAND_MAX_SPLITS |
2399                             PCIXM_COMMAND_MAX_READ);
2400                         devctl |= PCIXM_COMMAND_MAX_READ_2048;
2401                 }
2402                 pci_write_config(dev, sc->bge_pcixcap + PCIXR_COMMAND,
2403                     devctl, 2);
2404         }
2405
2406         /* Enable memory arbiter. */
2407         if (BGE_IS_5714_FAMILY(sc)) {
2408                 uint32_t val;
2409
2410                 val = CSR_READ_4(sc, BGE_MARB_MODE);
2411                 CSR_WRITE_4(sc, BGE_MARB_MODE, BGE_MARBMODE_ENABLE | val);
2412         } else {
2413                 CSR_WRITE_4(sc, BGE_MARB_MODE, BGE_MARBMODE_ENABLE);
2414         }
2415
2416         if (sc->bge_asicrev == BGE_ASICREV_BCM5906) {
2417                 for (i = 0; i < BGE_TIMEOUT; i++) {
2418                         val = CSR_READ_4(sc, BGE_VCPU_STATUS);
2419                         if (val & BGE_VCPU_STATUS_INIT_DONE)
2420                                 break;
2421                         DELAY(100);
2422                 }
2423                 if (i == BGE_TIMEOUT) {
2424                         if_printf(&sc->arpcom.ac_if, "reset timed out\n");
2425                         return;
2426                 }
2427         } else {
2428                 /*
2429                  * Poll until we see the 1's complement of the magic number.
2430                  * This indicates that the firmware initialization
2431                  * is complete.
2432                  */
2433                 for (i = 0; i < BGE_FIRMWARE_TIMEOUT; i++) {
2434                         val = bge_readmem_ind(sc, BGE_SOFTWARE_GENCOMM);
2435                         if (val == ~BGE_MAGIC_NUMBER)
2436                                 break;
2437                         DELAY(10);
2438                 }
2439                 if (i == BGE_FIRMWARE_TIMEOUT) {
2440                         if_printf(&sc->arpcom.ac_if, "firmware handshake "
2441                                   "timed out, found 0x%08x\n", val);
2442                         return;
2443                 }
2444         }
2445
2446         /*
2447          * XXX Wait for the value of the PCISTATE register to
2448          * return to its original pre-reset state. This is a
2449          * fairly good indicator of reset completion. If we don't
2450          * wait for the reset to fully complete, trying to read
2451          * from the device's non-PCI registers may yield garbage
2452          * results.
2453          */
2454         for (i = 0; i < BGE_TIMEOUT; i++) {
2455                 if (pci_read_config(dev, BGE_PCI_PCISTATE, 4) == pcistate)
2456                         break;
2457                 DELAY(10);
2458         }
2459
2460         /* Fix up byte swapping */
2461         CSR_WRITE_4(sc, BGE_MODE_CTL, BGE_DMA_SWAP_OPTIONS |
2462             BGE_MODECTL_BYTESWAP_DATA);
2463
2464         CSR_WRITE_4(sc, BGE_MAC_MODE, 0);
2465
2466         /*
2467          * The 5704 in TBI mode apparently needs some special
2468          * adjustment to insure the SERDES drive level is set
2469          * to 1.2V.
2470          */
2471         if (sc->bge_asicrev == BGE_ASICREV_BCM5704 &&
2472             (sc->bge_flags & BGE_FLAG_TBI)) {
2473                 uint32_t serdescfg;
2474
2475                 serdescfg = CSR_READ_4(sc, BGE_SERDES_CFG);
2476                 serdescfg = (serdescfg & ~0xFFF) | 0x880;
2477                 CSR_WRITE_4(sc, BGE_SERDES_CFG, serdescfg);
2478         }
2479
2480         /* XXX: Broadcom Linux driver. */
2481         if ((sc->bge_flags & BGE_FLAG_PCIE) &&
2482             sc->bge_chipid != BGE_CHIPID_BCM5750_A0 &&
2483             sc->bge_asicrev != BGE_ASICREV_BCM5785) {
2484                 uint32_t v;
2485
2486                 /* Enable Data FIFO protection. */
2487                 v = CSR_READ_4(sc, 0x7c00);
2488                 CSR_WRITE_4(sc, 0x7c00, v | (1<<25));
2489         }
2490
2491         DELAY(10000);
2492 }
2493
2494 /*
2495  * Frame reception handling. This is called if there's a frame
2496  * on the receive return list.
2497  *
2498  * Note: we have to be able to handle two possibilities here:
2499  * 1) the frame is from the jumbo recieve ring
2500  * 2) the frame is from the standard receive ring
2501  */
2502
2503 static void
2504 bge_rxeof(struct bge_softc *sc)
2505 {
2506         struct ifnet *ifp;
2507         int stdcnt = 0, jumbocnt = 0;
2508
2509         if (sc->bge_rx_saved_considx ==
2510             sc->bge_ldata.bge_status_block->bge_idx[0].bge_rx_prod_idx)
2511                 return;
2512
2513         ifp = &sc->arpcom.ac_if;
2514
2515         while (sc->bge_rx_saved_considx !=
2516                sc->bge_ldata.bge_status_block->bge_idx[0].bge_rx_prod_idx) {
2517                 struct bge_rx_bd        *cur_rx;
2518                 uint32_t                rxidx;
2519                 struct mbuf             *m = NULL;
2520                 uint16_t                vlan_tag = 0;
2521                 int                     have_tag = 0;
2522
2523                 cur_rx =
2524             &sc->bge_ldata.bge_rx_return_ring[sc->bge_rx_saved_considx];
2525
2526                 rxidx = cur_rx->bge_idx;
2527                 BGE_INC(sc->bge_rx_saved_considx, sc->bge_return_ring_cnt);
2528                 logif(rx_pkt);
2529
2530                 if (cur_rx->bge_flags & BGE_RXBDFLAG_VLAN_TAG) {
2531                         have_tag = 1;
2532                         vlan_tag = cur_rx->bge_vlan_tag;
2533                 }
2534
2535                 if (cur_rx->bge_flags & BGE_RXBDFLAG_JUMBO_RING) {
2536                         BGE_INC(sc->bge_jumbo, BGE_JUMBO_RX_RING_CNT);
2537                         jumbocnt++;
2538
2539                         if (rxidx != sc->bge_jumbo) {
2540                                 ifp->if_ierrors++;
2541                                 if_printf(ifp, "sw jumbo index(%d) "
2542                                     "and hw jumbo index(%d) mismatch, drop!\n",
2543                                     sc->bge_jumbo, rxidx);
2544                                 bge_setup_rxdesc_jumbo(sc, rxidx);
2545                                 continue;
2546                         }
2547
2548                         m = sc->bge_cdata.bge_rx_jumbo_chain[rxidx].bge_mbuf;
2549                         if (cur_rx->bge_flags & BGE_RXBDFLAG_ERROR) {
2550                                 ifp->if_ierrors++;
2551                                 bge_setup_rxdesc_jumbo(sc, sc->bge_jumbo);
2552                                 continue;
2553                         }
2554                         if (bge_newbuf_jumbo(sc, sc->bge_jumbo, 0)) {
2555                                 ifp->if_ierrors++;
2556                                 bge_setup_rxdesc_jumbo(sc, sc->bge_jumbo);
2557                                 continue;
2558                         }
2559                 } else {
2560                         BGE_INC(sc->bge_std, BGE_STD_RX_RING_CNT);
2561                         stdcnt++;
2562
2563                         if (rxidx != sc->bge_std) {
2564                                 ifp->if_ierrors++;
2565                                 if_printf(ifp, "sw std index(%d) "
2566                                     "and hw std index(%d) mismatch, drop!\n",
2567                                     sc->bge_std, rxidx);
2568                                 bge_setup_rxdesc_std(sc, rxidx);
2569                                 continue;
2570                         }
2571
2572                         m = sc->bge_cdata.bge_rx_std_chain[rxidx].bge_mbuf;
2573                         if (cur_rx->bge_flags & BGE_RXBDFLAG_ERROR) {
2574                                 ifp->if_ierrors++;
2575                                 bge_setup_rxdesc_std(sc, sc->bge_std);
2576                                 continue;
2577                         }
2578                         if (bge_newbuf_std(sc, sc->bge_std, 0)) {
2579                                 ifp->if_ierrors++;
2580                                 bge_setup_rxdesc_std(sc, sc->bge_std);
2581                                 continue;
2582                         }
2583                 }
2584
2585                 ifp->if_ipackets++;
2586 #if !defined(__i386__) && !defined(__x86_64__)
2587                 /*
2588                  * The x86 allows unaligned accesses, but for other
2589                  * platforms we must make sure the payload is aligned.
2590                  */
2591                 if (sc->bge_flags & BGE_FLAG_RX_ALIGNBUG) {
2592                         bcopy(m->m_data, m->m_data + ETHER_ALIGN,
2593                             cur_rx->bge_len);
2594                         m->m_data += ETHER_ALIGN;
2595                 }
2596 #endif
2597                 m->m_pkthdr.len = m->m_len = cur_rx->bge_len - ETHER_CRC_LEN;
2598                 m->m_pkthdr.rcvif = ifp;
2599
2600                 if (ifp->if_capenable & IFCAP_RXCSUM) {
2601                         if (cur_rx->bge_flags & BGE_RXBDFLAG_IP_CSUM) {
2602                                 m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED;
2603                                 if ((cur_rx->bge_ip_csum ^ 0xffff) == 0)
2604                                         m->m_pkthdr.csum_flags |= CSUM_IP_VALID;
2605                         }
2606                         if ((cur_rx->bge_flags & BGE_RXBDFLAG_TCP_UDP_CSUM) &&
2607                             m->m_pkthdr.len >= BGE_MIN_FRAME) {
2608                                 m->m_pkthdr.csum_data =
2609                                         cur_rx->bge_tcp_udp_csum;
2610                                 m->m_pkthdr.csum_flags |=
2611                                         CSUM_DATA_VALID | CSUM_PSEUDO_HDR;
2612                         }
2613                 }
2614
2615                 /*
2616                  * If we received a packet with a vlan tag, pass it
2617                  * to vlan_input() instead of ether_input().
2618                  */
2619                 if (have_tag) {
2620                         m->m_flags |= M_VLANTAG;
2621                         m->m_pkthdr.ether_vlantag = vlan_tag;
2622                         have_tag = vlan_tag = 0;
2623                 }
2624                 ifp->if_input(ifp, m);
2625         }
2626
2627         bge_writembx(sc, BGE_MBX_RX_CONS0_LO, sc->bge_rx_saved_considx);
2628         if (stdcnt)
2629                 bge_writembx(sc, BGE_MBX_RX_STD_PROD_LO, sc->bge_std);
2630         if (jumbocnt)
2631                 bge_writembx(sc, BGE_MBX_RX_JUMBO_PROD_LO, sc->bge_jumbo);
2632 }
2633
2634 static void
2635 bge_txeof(struct bge_softc *sc)
2636 {
2637         struct bge_tx_bd *cur_tx = NULL;
2638         struct ifnet *ifp;
2639
2640         if (sc->bge_tx_saved_considx ==
2641             sc->bge_ldata.bge_status_block->bge_idx[0].bge_tx_cons_idx)
2642                 return;
2643
2644         ifp = &sc->arpcom.ac_if;
2645
2646         /*
2647          * Go through our tx ring and free mbufs for those
2648          * frames that have been sent.
2649          */
2650         while (sc->bge_tx_saved_considx !=
2651                sc->bge_ldata.bge_status_block->bge_idx[0].bge_tx_cons_idx) {
2652                 uint32_t idx = 0;
2653
2654                 idx = sc->bge_tx_saved_considx;
2655                 cur_tx = &sc->bge_ldata.bge_tx_ring[idx];
2656                 if (cur_tx->bge_flags & BGE_TXBDFLAG_END)
2657                         ifp->if_opackets++;
2658                 if (sc->bge_cdata.bge_tx_chain[idx] != NULL) {
2659                         bus_dmamap_unload(sc->bge_cdata.bge_tx_mtag,
2660                             sc->bge_cdata.bge_tx_dmamap[idx]);
2661                         m_freem(sc->bge_cdata.bge_tx_chain[idx]);
2662                         sc->bge_cdata.bge_tx_chain[idx] = NULL;
2663                 }
2664                 sc->bge_txcnt--;
2665                 BGE_INC(sc->bge_tx_saved_considx, BGE_TX_RING_CNT);
2666                 logif(tx_pkt);
2667         }
2668
2669         if (cur_tx != NULL &&
2670             (BGE_TX_RING_CNT - sc->bge_txcnt) >=
2671             (BGE_NSEG_RSVD + BGE_NSEG_SPARE))
2672                 ifp->if_flags &= ~IFF_OACTIVE;
2673
2674         if (sc->bge_txcnt == 0)
2675                 ifp->if_timer = 0;
2676
2677         if (!ifq_is_empty(&ifp->if_snd))
2678                 if_devstart(ifp);
2679 }
2680
2681 #ifdef DEVICE_POLLING
2682
2683 static void
2684 bge_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
2685 {
2686         struct bge_softc *sc = ifp->if_softc;
2687         uint32_t status;
2688
2689         switch(cmd) {
2690         case POLL_REGISTER:
2691                 bge_disable_intr(sc);
2692                 break;
2693         case POLL_DEREGISTER:
2694                 bge_enable_intr(sc);
2695                 break;
2696         case POLL_AND_CHECK_STATUS:
2697                 /*
2698                  * Process link state changes.
2699                  */
2700                 status = CSR_READ_4(sc, BGE_MAC_STS);
2701                 if ((status & sc->bge_link_chg) || sc->bge_link_evt) {
2702                         sc->bge_link_evt = 0;
2703                         sc->bge_link_upd(sc, status);
2704                 }
2705                 /* fall through */
2706         case POLL_ONLY:
2707                 if (ifp->if_flags & IFF_RUNNING) {
2708                         bge_rxeof(sc);
2709                         bge_txeof(sc);
2710                 }
2711                 break;
2712         }
2713 }
2714
2715 #endif
2716
2717 static void
2718 bge_intr(void *xsc)
2719 {
2720         struct bge_softc *sc = xsc;
2721         struct ifnet *ifp = &sc->arpcom.ac_if;
2722         uint32_t status;
2723
2724         logif(intr);
2725
2726         /*
2727          * Ack the interrupt by writing something to BGE_MBX_IRQ0_LO.  Don't
2728          * disable interrupts by writing nonzero like we used to, since with
2729          * our current organization this just gives complications and
2730          * pessimizations for re-enabling interrupts.  We used to have races
2731          * instead of the necessary complications.  Disabling interrupts
2732          * would just reduce the chance of a status update while we are
2733          * running (by switching to the interrupt-mode coalescence
2734          * parameters), but this chance is already very low so it is more
2735          * efficient to get another interrupt than prevent it.
2736          *
2737          * We do the ack first to ensure another interrupt if there is a
2738          * status update after the ack.  We don't check for the status
2739          * changing later because it is more efficient to get another
2740          * interrupt than prevent it, not quite as above (not checking is
2741          * a smaller optimization than not toggling the interrupt enable,
2742          * since checking doesn't involve PCI accesses and toggling require
2743          * the status check).  So toggling would probably be a pessimization
2744          * even with MSI.  It would only be needed for using a task queue.
2745          */
2746         bge_writembx(sc, BGE_MBX_IRQ0_LO, 0);
2747
2748         /*
2749          * Process link state changes.
2750          */
2751         status = CSR_READ_4(sc, BGE_MAC_STS);
2752         if ((status & sc->bge_link_chg) || sc->bge_link_evt) {
2753                 sc->bge_link_evt = 0;
2754                 sc->bge_link_upd(sc, status);
2755         }
2756
2757         if (ifp->if_flags & IFF_RUNNING) {
2758                 /* Check RX return ring producer/consumer */
2759                 bge_rxeof(sc);
2760
2761                 /* Check TX ring producer/consumer */
2762                 bge_txeof(sc);
2763         }
2764
2765         if (sc->bge_coal_chg)
2766                 bge_coal_change(sc);
2767 }
2768
2769 static void
2770 bge_tick(void *xsc)
2771 {
2772         struct bge_softc *sc = xsc;
2773         struct ifnet *ifp = &sc->arpcom.ac_if;
2774
2775         lwkt_serialize_enter(ifp->if_serializer);
2776
2777         if (BGE_IS_5705_PLUS(sc))
2778                 bge_stats_update_regs(sc);
2779         else
2780                 bge_stats_update(sc);
2781
2782         if (sc->bge_flags & BGE_FLAG_TBI) {
2783                 /*
2784                  * Since in TBI mode auto-polling can't be used we should poll
2785                  * link status manually. Here we register pending link event
2786                  * and trigger interrupt.
2787                  */
2788                 sc->bge_link_evt++;
2789                 BGE_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_INTR_SET);
2790         } else if (!sc->bge_link) {
2791                 mii_tick(device_get_softc(sc->bge_miibus));
2792         }
2793
2794         callout_reset(&sc->bge_stat_timer, hz, bge_tick, sc);
2795
2796         lwkt_serialize_exit(ifp->if_serializer);
2797 }
2798
2799 static void
2800 bge_stats_update_regs(struct bge_softc *sc)
2801 {
2802         struct ifnet *ifp = &sc->arpcom.ac_if;
2803         struct bge_mac_stats_regs stats;
2804         uint32_t *s;
2805         int i;
2806
2807         s = (uint32_t *)&stats;
2808         for (i = 0; i < sizeof(struct bge_mac_stats_regs); i += 4) {
2809                 *s = CSR_READ_4(sc, BGE_RX_STATS + i);
2810                 s++;
2811         }
2812
2813         ifp->if_collisions +=
2814            (stats.dot3StatsSingleCollisionFrames +
2815            stats.dot3StatsMultipleCollisionFrames +
2816            stats.dot3StatsExcessiveCollisions +
2817            stats.dot3StatsLateCollisions) -
2818            ifp->if_collisions;
2819 }
2820
2821 static void
2822 bge_stats_update(struct bge_softc *sc)
2823 {
2824         struct ifnet *ifp = &sc->arpcom.ac_if;
2825         bus_size_t stats;
2826
2827         stats = BGE_MEMWIN_START + BGE_STATS_BLOCK;
2828
2829 #define READ_STAT(sc, stats, stat)      \
2830         CSR_READ_4(sc, stats + offsetof(struct bge_stats, stat))
2831
2832         ifp->if_collisions +=
2833            (READ_STAT(sc, stats,
2834                 txstats.dot3StatsSingleCollisionFrames.bge_addr_lo) +
2835             READ_STAT(sc, stats,
2836                 txstats.dot3StatsMultipleCollisionFrames.bge_addr_lo) +
2837             READ_STAT(sc, stats,
2838                 txstats.dot3StatsExcessiveCollisions.bge_addr_lo) +
2839             READ_STAT(sc, stats,
2840                 txstats.dot3StatsLateCollisions.bge_addr_lo)) -
2841            ifp->if_collisions;
2842
2843 #undef READ_STAT
2844
2845 #ifdef notdef
2846         ifp->if_collisions +=
2847            (sc->bge_rdata->bge_info.bge_stats.dot3StatsSingleCollisionFrames +
2848            sc->bge_rdata->bge_info.bge_stats.dot3StatsMultipleCollisionFrames +
2849            sc->bge_rdata->bge_info.bge_stats.dot3StatsExcessiveCollisions +
2850            sc->bge_rdata->bge_info.bge_stats.dot3StatsLateCollisions) -
2851            ifp->if_collisions;
2852 #endif
2853 }
2854
2855 /*
2856  * Encapsulate an mbuf chain in the tx ring  by coupling the mbuf data
2857  * pointers to descriptors.
2858  */
2859 static int
2860 bge_encap(struct bge_softc *sc, struct mbuf **m_head0, uint32_t *txidx)
2861 {
2862         struct bge_tx_bd *d = NULL;
2863         uint16_t csum_flags = 0;
2864         bus_dma_segment_t segs[BGE_NSEG_NEW];
2865         bus_dmamap_t map;
2866         int error, maxsegs, nsegs, idx, i;
2867         struct mbuf *m_head = *m_head0;
2868
2869         if (m_head->m_pkthdr.csum_flags) {
2870                 if (m_head->m_pkthdr.csum_flags & CSUM_IP)
2871                         csum_flags |= BGE_TXBDFLAG_IP_CSUM;
2872                 if (m_head->m_pkthdr.csum_flags & (CSUM_TCP | CSUM_UDP))
2873                         csum_flags |= BGE_TXBDFLAG_TCP_UDP_CSUM;
2874                 if (m_head->m_flags & M_LASTFRAG)
2875                         csum_flags |= BGE_TXBDFLAG_IP_FRAG_END;
2876                 else if (m_head->m_flags & M_FRAG)
2877                         csum_flags |= BGE_TXBDFLAG_IP_FRAG;
2878         }
2879
2880         idx = *txidx;
2881         map = sc->bge_cdata.bge_tx_dmamap[idx];
2882
2883         maxsegs = (BGE_TX_RING_CNT - sc->bge_txcnt) - BGE_NSEG_RSVD;
2884         KASSERT(maxsegs >= BGE_NSEG_SPARE,
2885                 ("not enough segments %d", maxsegs));
2886
2887         if (maxsegs > BGE_NSEG_NEW)
2888                 maxsegs = BGE_NSEG_NEW;
2889
2890         /*
2891          * Pad outbound frame to BGE_MIN_FRAME for an unusual reason.
2892          * The bge hardware will pad out Tx runts to BGE_MIN_FRAME,
2893          * but when such padded frames employ the bge IP/TCP checksum
2894          * offload, the hardware checksum assist gives incorrect results
2895          * (possibly from incorporating its own padding into the UDP/TCP
2896          * checksum; who knows).  If we pad such runts with zeros, the
2897          * onboard checksum comes out correct.
2898          */
2899         if ((csum_flags & BGE_TXBDFLAG_TCP_UDP_CSUM) &&
2900             m_head->m_pkthdr.len < BGE_MIN_FRAME) {
2901                 error = m_devpad(m_head, BGE_MIN_FRAME);
2902                 if (error)
2903                         goto back;
2904         }
2905
2906         if (sc->bge_force_defrag && (sc->bge_flags & BGE_FLAG_PCIE) &&
2907             m_head->m_next != NULL) {
2908                 struct mbuf *m_new;
2909
2910                 /*
2911                  * Forcefully defragment mbuf chain to overcome hardware
2912                  * limitation which only support a single outstanding
2913                  * DMA read operation.  If it fails, keep moving on using
2914                  * the original mbuf chain.
2915                  */
2916                 m_new = m_defrag(m_head, MB_DONTWAIT);
2917                 if (m_new != NULL)
2918                         *m_head0 = m_head = m_new;
2919         }
2920
2921         error = bus_dmamap_load_mbuf_defrag(sc->bge_cdata.bge_tx_mtag, map,
2922                         m_head0, segs, maxsegs, &nsegs, BUS_DMA_NOWAIT);
2923         if (error)
2924                 goto back;
2925
2926         m_head = *m_head0;
2927         bus_dmamap_sync(sc->bge_cdata.bge_tx_mtag, map, BUS_DMASYNC_PREWRITE);
2928
2929         for (i = 0; ; i++) {
2930                 d = &sc->bge_ldata.bge_tx_ring[idx];
2931
2932                 d->bge_addr.bge_addr_lo = BGE_ADDR_LO(segs[i].ds_addr);
2933                 d->bge_addr.bge_addr_hi = BGE_ADDR_HI(segs[i].ds_addr);
2934                 d->bge_len = segs[i].ds_len;
2935                 d->bge_flags = csum_flags;
2936
2937                 if (i == nsegs - 1)
2938                         break;
2939                 BGE_INC(idx, BGE_TX_RING_CNT);
2940         }
2941         /* Mark the last segment as end of packet... */
2942         d->bge_flags |= BGE_TXBDFLAG_END;
2943
2944         /* Set vlan tag to the first segment of the packet. */
2945         d = &sc->bge_ldata.bge_tx_ring[*txidx];
2946         if (m_head->m_flags & M_VLANTAG) {
2947                 d->bge_flags |= BGE_TXBDFLAG_VLAN_TAG;
2948                 d->bge_vlan_tag = m_head->m_pkthdr.ether_vlantag;
2949         } else {
2950                 d->bge_vlan_tag = 0;
2951         }
2952
2953         /*
2954          * Insure that the map for this transmission is placed at
2955          * the array index of the last descriptor in this chain.
2956          */
2957         sc->bge_cdata.bge_tx_dmamap[*txidx] = sc->bge_cdata.bge_tx_dmamap[idx];
2958         sc->bge_cdata.bge_tx_dmamap[idx] = map;
2959         sc->bge_cdata.bge_tx_chain[idx] = m_head;
2960         sc->bge_txcnt += nsegs;
2961
2962         BGE_INC(idx, BGE_TX_RING_CNT);
2963         *txidx = idx;
2964 back:
2965         if (error) {
2966                 m_freem(*m_head0);
2967                 *m_head0 = NULL;
2968         }
2969         return error;
2970 }
2971
2972 /*
2973  * Main transmit routine. To avoid having to do mbuf copies, we put pointers
2974  * to the mbuf data regions directly in the transmit descriptors.
2975  */
2976 static void
2977 bge_start(struct ifnet *ifp)
2978 {
2979         struct bge_softc *sc = ifp->if_softc;
2980         struct mbuf *m_head = NULL;
2981         uint32_t prodidx;
2982         int need_trans;
2983
2984         if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING)
2985                 return;
2986
2987         prodidx = sc->bge_tx_prodidx;
2988
2989         need_trans = 0;
2990         while (sc->bge_cdata.bge_tx_chain[prodidx] == NULL) {
2991                 m_head = ifq_dequeue(&ifp->if_snd, NULL);
2992                 if (m_head == NULL)
2993                         break;
2994
2995                 /*
2996                  * XXX
2997                  * The code inside the if() block is never reached since we
2998                  * must mark CSUM_IP_FRAGS in our if_hwassist to start getting
2999                  * requests to checksum TCP/UDP in a fragmented packet.
3000                  * 
3001                  * XXX
3002                  * safety overkill.  If this is a fragmented packet chain
3003                  * with delayed TCP/UDP checksums, then only encapsulate
3004                  * it if we have enough descriptors to handle the entire
3005                  * chain at once.
3006                  * (paranoia -- may not actually be needed)
3007                  */
3008                 if ((m_head->m_flags & M_FIRSTFRAG) &&
3009                     (m_head->m_pkthdr.csum_flags & CSUM_DELAY_DATA)) {
3010                         if ((BGE_TX_RING_CNT - sc->bge_txcnt) <
3011                             m_head->m_pkthdr.csum_data + BGE_NSEG_RSVD) {
3012                                 ifp->if_flags |= IFF_OACTIVE;
3013                                 ifq_prepend(&ifp->if_snd, m_head);
3014                                 break;
3015                         }
3016                 }
3017
3018                 /*
3019                  * Sanity check: avoid coming within BGE_NSEG_RSVD
3020                  * descriptors of the end of the ring.  Also make
3021                  * sure there are BGE_NSEG_SPARE descriptors for
3022                  * jumbo buffers' defragmentation.
3023                  */
3024                 if ((BGE_TX_RING_CNT - sc->bge_txcnt) <
3025                     (BGE_NSEG_RSVD + BGE_NSEG_SPARE)) {
3026                         ifp->if_flags |= IFF_OACTIVE;
3027                         ifq_prepend(&ifp->if_snd, m_head);
3028                         break;
3029                 }
3030
3031                 /*
3032                  * Pack the data into the transmit ring. If we
3033                  * don't have room, set the OACTIVE flag and wait
3034                  * for the NIC to drain the ring.
3035                  */
3036                 if (bge_encap(sc, &m_head, &prodidx)) {
3037                         ifp->if_flags |= IFF_OACTIVE;
3038                         ifp->if_oerrors++;
3039                         break;
3040                 }
3041                 need_trans = 1;
3042
3043                 ETHER_BPF_MTAP(ifp, m_head);
3044         }
3045
3046         if (!need_trans)
3047                 return;
3048
3049         /* Transmit */
3050         bge_writembx(sc, BGE_MBX_TX_HOST_PROD0_LO, prodidx);
3051         /* 5700 b2 errata */
3052         if (sc->bge_chiprev == BGE_CHIPREV_5700_BX)
3053                 bge_writembx(sc, BGE_MBX_TX_HOST_PROD0_LO, prodidx);
3054
3055         sc->bge_tx_prodidx = prodidx;
3056
3057         /*
3058          * Set a timeout in case the chip goes out to lunch.
3059          */
3060         ifp->if_timer = 5;
3061 }
3062
3063 static void
3064 bge_init(void *xsc)
3065 {
3066         struct bge_softc *sc = xsc;
3067         struct ifnet *ifp = &sc->arpcom.ac_if;
3068         uint16_t *m;
3069
3070         ASSERT_SERIALIZED(ifp->if_serializer);
3071
3072         if (ifp->if_flags & IFF_RUNNING)
3073                 return;
3074
3075         /* Cancel pending I/O and flush buffers. */
3076         bge_stop(sc);
3077         bge_reset(sc);
3078         bge_chipinit(sc);
3079
3080         /*
3081          * Init the various state machines, ring
3082          * control blocks and firmware.
3083          */
3084         if (bge_blockinit(sc)) {
3085                 if_printf(ifp, "initialization failure\n");
3086                 bge_stop(sc);
3087                 return;
3088         }
3089
3090         /* Specify MTU. */
3091         CSR_WRITE_4(sc, BGE_RX_MTU, ifp->if_mtu +
3092             ETHER_HDR_LEN + ETHER_CRC_LEN + EVL_ENCAPLEN);
3093
3094         /* Load our MAC address. */
3095         m = (uint16_t *)&sc->arpcom.ac_enaddr[0];
3096         CSR_WRITE_4(sc, BGE_MAC_ADDR1_LO, htons(m[0]));
3097         CSR_WRITE_4(sc, BGE_MAC_ADDR1_HI, (htons(m[1]) << 16) | htons(m[2]));
3098
3099         /* Enable or disable promiscuous mode as needed. */
3100         bge_setpromisc(sc);
3101
3102         /* Program multicast filter. */
3103         bge_setmulti(sc);
3104
3105         /* Init RX ring. */
3106         if (bge_init_rx_ring_std(sc)) {
3107                 if_printf(ifp, "RX ring initialization failed\n");
3108                 bge_stop(sc);
3109                 return;
3110         }
3111
3112         /*
3113          * Workaround for a bug in 5705 ASIC rev A0. Poll the NIC's
3114          * memory to insure that the chip has in fact read the first
3115          * entry of the ring.
3116          */
3117         if (sc->bge_chipid == BGE_CHIPID_BCM5705_A0) {
3118                 uint32_t                v, i;
3119                 for (i = 0; i < 10; i++) {
3120                         DELAY(20);
3121                         v = bge_readmem_ind(sc, BGE_STD_RX_RINGS + 8);
3122                         if (v == (MCLBYTES - ETHER_ALIGN))
3123                                 break;
3124                 }
3125                 if (i == 10)
3126                         if_printf(ifp, "5705 A0 chip failed to load RX ring\n");
3127         }
3128
3129         /* Init jumbo RX ring. */
3130         if (ifp->if_mtu > (ETHERMTU + ETHER_HDR_LEN + ETHER_CRC_LEN)) {
3131                 if (bge_init_rx_ring_jumbo(sc)) {
3132                         if_printf(ifp, "Jumbo RX ring initialization failed\n");
3133                         bge_stop(sc);
3134                         return;
3135                 }
3136         }
3137
3138         /* Init our RX return ring index */
3139         sc->bge_rx_saved_considx = 0;
3140
3141         /* Init TX ring. */
3142         bge_init_tx_ring(sc);
3143
3144         /* Turn on transmitter */
3145         BGE_SETBIT(sc, BGE_TX_MODE, BGE_TXMODE_ENABLE);
3146
3147         /* Turn on receiver */
3148         BGE_SETBIT(sc, BGE_RX_MODE, BGE_RXMODE_ENABLE);
3149
3150         /* Tell firmware we're alive. */
3151         BGE_SETBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP);
3152
3153         /* Enable host interrupts if polling(4) is not enabled. */
3154         BGE_SETBIT(sc, BGE_PCI_MISC_CTL, BGE_PCIMISCCTL_CLEAR_INTA);
3155 #ifdef DEVICE_POLLING
3156         if (ifp->if_flags & IFF_POLLING)
3157                 bge_disable_intr(sc);
3158         else
3159 #endif
3160         bge_enable_intr(sc);
3161
3162         bge_ifmedia_upd(ifp);
3163
3164         ifp->if_flags |= IFF_RUNNING;
3165         ifp->if_flags &= ~IFF_OACTIVE;
3166
3167         callout_reset(&sc->bge_stat_timer, hz, bge_tick, sc);
3168 }
3169
3170 /*
3171  * Set media options.
3172  */
3173 static int
3174 bge_ifmedia_upd(struct ifnet *ifp)
3175 {
3176         struct bge_softc *sc = ifp->if_softc;
3177
3178         /* If this is a 1000baseX NIC, enable the TBI port. */
3179         if (sc->bge_flags & BGE_FLAG_TBI) {
3180                 struct ifmedia *ifm = &sc->bge_ifmedia;
3181
3182                 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
3183                         return(EINVAL);
3184
3185                 switch(IFM_SUBTYPE(ifm->ifm_media)) {
3186                 case IFM_AUTO:
3187                         /*
3188                          * The BCM5704 ASIC appears to have a special
3189                          * mechanism for programming the autoneg
3190                          * advertisement registers in TBI mode.
3191                          */
3192                         if (!bge_fake_autoneg &&
3193                             sc->bge_asicrev == BGE_ASICREV_BCM5704) {
3194                                 uint32_t sgdig;
3195
3196                                 CSR_WRITE_4(sc, BGE_TX_TBI_AUTONEG, 0);
3197                                 sgdig = CSR_READ_4(sc, BGE_SGDIG_CFG);
3198                                 sgdig |= BGE_SGDIGCFG_AUTO |
3199                                          BGE_SGDIGCFG_PAUSE_CAP |
3200                                          BGE_SGDIGCFG_ASYM_PAUSE;
3201                                 CSR_WRITE_4(sc, BGE_SGDIG_CFG,
3202                                             sgdig | BGE_SGDIGCFG_SEND);
3203                                 DELAY(5);
3204                                 CSR_WRITE_4(sc, BGE_SGDIG_CFG, sgdig);
3205                         }
3206                         break;
3207                 case IFM_1000_SX:
3208                         if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX) {
3209                                 BGE_CLRBIT(sc, BGE_MAC_MODE,
3210                                     BGE_MACMODE_HALF_DUPLEX);
3211                         } else {
3212                                 BGE_SETBIT(sc, BGE_MAC_MODE,
3213                                     BGE_MACMODE_HALF_DUPLEX);
3214                         }
3215                         break;
3216                 default:
3217                         return(EINVAL);
3218                 }
3219         } else {
3220                 struct mii_data *mii = device_get_softc(sc->bge_miibus);
3221
3222                 sc->bge_link_evt++;
3223                 sc->bge_link = 0;
3224                 if (mii->mii_instance) {
3225                         struct mii_softc *miisc;
3226
3227                         LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
3228                                 mii_phy_reset(miisc);
3229                 }
3230                 mii_mediachg(mii);
3231         }
3232         return(0);
3233 }
3234
3235 /*
3236  * Report current media status.
3237  */
3238 static void
3239 bge_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
3240 {
3241         struct bge_softc *sc = ifp->if_softc;
3242
3243         if (sc->bge_flags & BGE_FLAG_TBI) {
3244                 ifmr->ifm_status = IFM_AVALID;
3245                 ifmr->ifm_active = IFM_ETHER;
3246                 if (CSR_READ_4(sc, BGE_MAC_STS) &
3247                     BGE_MACSTAT_TBI_PCS_SYNCHED) {
3248                         ifmr->ifm_status |= IFM_ACTIVE;
3249                 } else {
3250                         ifmr->ifm_active |= IFM_NONE;
3251                         return;
3252                 }
3253
3254                 ifmr->ifm_active |= IFM_1000_SX;
3255                 if (CSR_READ_4(sc, BGE_MAC_MODE) & BGE_MACMODE_HALF_DUPLEX)
3256                         ifmr->ifm_active |= IFM_HDX;    
3257                 else
3258                         ifmr->ifm_active |= IFM_FDX;
3259         } else {
3260                 struct mii_data *mii = device_get_softc(sc->bge_miibus);
3261
3262                 mii_pollstat(mii);
3263                 ifmr->ifm_active = mii->mii_media_active;
3264                 ifmr->ifm_status = mii->mii_media_status;
3265         }
3266 }
3267
3268 static int
3269 bge_ioctl(struct ifnet *ifp, u_long command, caddr_t data, struct ucred *cr)
3270 {
3271         struct bge_softc *sc = ifp->if_softc;
3272         struct ifreq *ifr = (struct ifreq *)data;
3273         int mask, error = 0;
3274
3275         ASSERT_SERIALIZED(ifp->if_serializer);
3276
3277         switch (command) {
3278         case SIOCSIFMTU:
3279                 if ((!BGE_IS_JUMBO_CAPABLE(sc) && ifr->ifr_mtu > ETHERMTU) ||
3280                     (BGE_IS_JUMBO_CAPABLE(sc) &&
3281                      ifr->ifr_mtu > BGE_JUMBO_MTU)) {
3282                         error = EINVAL;
3283                 } else if (ifp->if_mtu != ifr->ifr_mtu) {
3284                         ifp->if_mtu = ifr->ifr_mtu;
3285                         ifp->if_flags &= ~IFF_RUNNING;
3286                         bge_init(sc);
3287                 }
3288                 break;
3289         case SIOCSIFFLAGS:
3290                 if (ifp->if_flags & IFF_UP) {
3291                         if (ifp->if_flags & IFF_RUNNING) {
3292                                 mask = ifp->if_flags ^ sc->bge_if_flags;
3293
3294                                 /*
3295                                  * If only the state of the PROMISC flag
3296                                  * changed, then just use the 'set promisc
3297                                  * mode' command instead of reinitializing
3298                                  * the entire NIC. Doing a full re-init
3299                                  * means reloading the firmware and waiting
3300                                  * for it to start up, which may take a
3301                                  * second or two.  Similarly for ALLMULTI.
3302                                  */
3303                                 if (mask & IFF_PROMISC)
3304                                         bge_setpromisc(sc);
3305                                 if (mask & IFF_ALLMULTI)
3306                                         bge_setmulti(sc);
3307                         } else {
3308                                 bge_init(sc);
3309                         }
3310                 } else {
3311                         if (ifp->if_flags & IFF_RUNNING)
3312                                 bge_stop(sc);
3313                 }
3314                 sc->bge_if_flags = ifp->if_flags;
3315                 break;
3316         case SIOCADDMULTI:
3317         case SIOCDELMULTI:
3318                 if (ifp->if_flags & IFF_RUNNING)
3319                         bge_setmulti(sc);
3320                 break;
3321         case SIOCSIFMEDIA:
3322         case SIOCGIFMEDIA:
3323                 if (sc->bge_flags & BGE_FLAG_TBI) {
3324                         error = ifmedia_ioctl(ifp, ifr,
3325                             &sc->bge_ifmedia, command);
3326                 } else {
3327                         struct mii_data *mii;
3328
3329                         mii = device_get_softc(sc->bge_miibus);
3330                         error = ifmedia_ioctl(ifp, ifr,
3331                                               &mii->mii_media, command);
3332                 }
3333                 break;
3334         case SIOCSIFCAP:
3335                 mask = ifr->ifr_reqcap ^ ifp->if_capenable;
3336                 if (mask & IFCAP_HWCSUM) {
3337                         ifp->if_capenable ^= (mask & IFCAP_HWCSUM);
3338                         if (IFCAP_HWCSUM & ifp->if_capenable)
3339                                 ifp->if_hwassist = BGE_CSUM_FEATURES;
3340                         else
3341                                 ifp->if_hwassist = 0;
3342                 }
3343                 break;
3344         default:
3345                 error = ether_ioctl(ifp, command, data);
3346                 break;
3347         }
3348         return error;
3349 }
3350
3351 static void
3352 bge_watchdog(struct ifnet *ifp)
3353 {
3354         struct bge_softc *sc = ifp->if_softc;
3355
3356         if_printf(ifp, "watchdog timeout -- resetting\n");
3357
3358         ifp->if_flags &= ~IFF_RUNNING;
3359         bge_init(sc);
3360
3361         ifp->if_oerrors++;
3362
3363         if (!ifq_is_empty(&ifp->if_snd))
3364                 if_devstart(ifp);
3365 }
3366
3367 /*
3368  * Stop the adapter and free any mbufs allocated to the
3369  * RX and TX lists.
3370  */
3371 static void
3372 bge_stop(struct bge_softc *sc)
3373 {
3374         struct ifnet *ifp = &sc->arpcom.ac_if;
3375
3376         ASSERT_SERIALIZED(ifp->if_serializer);
3377
3378         callout_stop(&sc->bge_stat_timer);
3379
3380         /*
3381          * Disable all of the receiver blocks
3382          */
3383         BGE_CLRBIT(sc, BGE_RX_MODE, BGE_RXMODE_ENABLE);
3384         BGE_CLRBIT(sc, BGE_RBDI_MODE, BGE_RBDIMODE_ENABLE);
3385         BGE_CLRBIT(sc, BGE_RXLP_MODE, BGE_RXLPMODE_ENABLE);
3386         if (!BGE_IS_5705_PLUS(sc))
3387                 BGE_CLRBIT(sc, BGE_RXLS_MODE, BGE_RXLSMODE_ENABLE);
3388         BGE_CLRBIT(sc, BGE_RDBDI_MODE, BGE_RBDIMODE_ENABLE);
3389         BGE_CLRBIT(sc, BGE_RDC_MODE, BGE_RDCMODE_ENABLE);
3390         BGE_CLRBIT(sc, BGE_RBDC_MODE, BGE_RBDCMODE_ENABLE);
3391
3392         /*
3393          * Disable all of the transmit blocks
3394          */
3395         BGE_CLRBIT(sc, BGE_SRS_MODE, BGE_SRSMODE_ENABLE);
3396         BGE_CLRBIT(sc, BGE_SBDI_MODE, BGE_SBDIMODE_ENABLE);
3397         BGE_CLRBIT(sc, BGE_SDI_MODE, BGE_SDIMODE_ENABLE);
3398         BGE_CLRBIT(sc, BGE_RDMA_MODE, BGE_RDMAMODE_ENABLE);
3399         BGE_CLRBIT(sc, BGE_SDC_MODE, BGE_SDCMODE_ENABLE);
3400         if (!BGE_IS_5705_PLUS(sc))
3401                 BGE_CLRBIT(sc, BGE_DMAC_MODE, BGE_DMACMODE_ENABLE);
3402         BGE_CLRBIT(sc, BGE_SBDC_MODE, BGE_SBDCMODE_ENABLE);
3403
3404         /*
3405          * Shut down all of the memory managers and related
3406          * state machines.
3407          */
3408         BGE_CLRBIT(sc, BGE_HCC_MODE, BGE_HCCMODE_ENABLE);
3409         BGE_CLRBIT(sc, BGE_WDMA_MODE, BGE_WDMAMODE_ENABLE);
3410         if (!BGE_IS_5705_PLUS(sc))
3411                 BGE_CLRBIT(sc, BGE_MBCF_MODE, BGE_MBCFMODE_ENABLE);
3412         CSR_WRITE_4(sc, BGE_FTQ_RESET, 0xFFFFFFFF);
3413         CSR_WRITE_4(sc, BGE_FTQ_RESET, 0);
3414         if (!BGE_IS_5705_PLUS(sc)) {
3415                 BGE_CLRBIT(sc, BGE_BMAN_MODE, BGE_BMANMODE_ENABLE);
3416                 BGE_CLRBIT(sc, BGE_MARB_MODE, BGE_MARBMODE_ENABLE);
3417         }
3418
3419         /* Disable host interrupts. */
3420         bge_disable_intr(sc);
3421
3422         /*
3423          * Tell firmware we're shutting down.
3424          */
3425         BGE_CLRBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP);
3426
3427         /* Free the RX lists. */
3428         bge_free_rx_ring_std(sc);
3429
3430         /* Free jumbo RX list. */
3431         if (BGE_IS_JUMBO_CAPABLE(sc))
3432                 bge_free_rx_ring_jumbo(sc);
3433
3434         /* Free TX buffers. */
3435         bge_free_tx_ring(sc);
3436
3437         sc->bge_link = 0;
3438         sc->bge_coal_chg = 0;
3439
3440         sc->bge_tx_saved_considx = BGE_TXCONS_UNSET;
3441
3442         ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
3443         ifp->if_timer = 0;
3444 }
3445
3446 /*
3447  * Stop all chip I/O so that the kernel's probe routines don't
3448  * get confused by errant DMAs when rebooting.
3449  */
3450 static void
3451 bge_shutdown(device_t dev)
3452 {
3453         struct bge_softc *sc = device_get_softc(dev);
3454         struct ifnet *ifp = &sc->arpcom.ac_if;
3455
3456         lwkt_serialize_enter(ifp->if_serializer);
3457         bge_stop(sc);
3458         bge_reset(sc);
3459         lwkt_serialize_exit(ifp->if_serializer);
3460 }
3461
3462 static int
3463 bge_suspend(device_t dev)
3464 {
3465         struct bge_softc *sc = device_get_softc(dev);
3466         struct ifnet *ifp = &sc->arpcom.ac_if;
3467
3468         lwkt_serialize_enter(ifp->if_serializer);
3469         bge_stop(sc);
3470         lwkt_serialize_exit(ifp->if_serializer);
3471
3472         return 0;
3473 }
3474
3475 static int
3476 bge_resume(device_t dev)
3477 {
3478         struct bge_softc *sc = device_get_softc(dev);
3479         struct ifnet *ifp = &sc->arpcom.ac_if;
3480
3481         lwkt_serialize_enter(ifp->if_serializer);
3482
3483         if (ifp->if_flags & IFF_UP) {
3484                 bge_init(sc);
3485
3486                 if (!ifq_is_empty(&ifp->if_snd))
3487                         if_devstart(ifp);
3488         }
3489
3490         lwkt_serialize_exit(ifp->if_serializer);
3491
3492         return 0;
3493 }
3494
3495 static void
3496 bge_setpromisc(struct bge_softc *sc)
3497 {
3498         struct ifnet *ifp = &sc->arpcom.ac_if;
3499
3500         if (ifp->if_flags & IFF_PROMISC)
3501                 BGE_SETBIT(sc, BGE_RX_MODE, BGE_RXMODE_RX_PROMISC);
3502         else
3503                 BGE_CLRBIT(sc, BGE_RX_MODE, BGE_RXMODE_RX_PROMISC);
3504 }
3505
3506 static void
3507 bge_dma_free(struct bge_softc *sc)
3508 {
3509         int i;
3510
3511         /* Destroy RX mbuf DMA stuffs. */
3512         if (sc->bge_cdata.bge_rx_mtag != NULL) {
3513                 for (i = 0; i < BGE_STD_RX_RING_CNT; i++) {
3514                         bus_dmamap_destroy(sc->bge_cdata.bge_rx_mtag,
3515                             sc->bge_cdata.bge_rx_std_dmamap[i]);
3516                 }
3517                 bus_dmamap_destroy(sc->bge_cdata.bge_rx_mtag,
3518                                    sc->bge_cdata.bge_rx_tmpmap);
3519                 bus_dma_tag_destroy(sc->bge_cdata.bge_rx_mtag);
3520         }
3521
3522         /* Destroy TX mbuf DMA stuffs. */
3523         if (sc->bge_cdata.bge_tx_mtag != NULL) {
3524                 for (i = 0; i < BGE_TX_RING_CNT; i++) {
3525                         bus_dmamap_destroy(sc->bge_cdata.bge_tx_mtag,
3526                             sc->bge_cdata.bge_tx_dmamap[i]);
3527                 }
3528                 bus_dma_tag_destroy(sc->bge_cdata.bge_tx_mtag);
3529         }
3530
3531         /* Destroy standard RX ring */
3532         bge_dma_block_free(sc->bge_cdata.bge_rx_std_ring_tag,
3533                            sc->bge_cdata.bge_rx_std_ring_map,
3534                            sc->bge_ldata.bge_rx_std_ring);
3535
3536         if (BGE_IS_JUMBO_CAPABLE(sc))
3537                 bge_free_jumbo_mem(sc);
3538
3539         /* Destroy RX return ring */
3540         bge_dma_block_free(sc->bge_cdata.bge_rx_return_ring_tag,
3541                            sc->bge_cdata.bge_rx_return_ring_map,
3542                            sc->bge_ldata.bge_rx_return_ring);
3543
3544         /* Destroy TX ring */
3545         bge_dma_block_free(sc->bge_cdata.bge_tx_ring_tag,
3546                            sc->bge_cdata.bge_tx_ring_map,
3547                            sc->bge_ldata.bge_tx_ring);
3548
3549         /* Destroy status block */
3550         bge_dma_block_free(sc->bge_cdata.bge_status_tag,
3551                            sc->bge_cdata.bge_status_map,
3552                            sc->bge_ldata.bge_status_block);
3553
3554         /* Destroy statistics block */
3555         bge_dma_block_free(sc->bge_cdata.bge_stats_tag,
3556                            sc->bge_cdata.bge_stats_map,
3557                            sc->bge_ldata.bge_stats);
3558
3559         /* Destroy the parent tag */
3560         if (sc->bge_cdata.bge_parent_tag != NULL)
3561                 bus_dma_tag_destroy(sc->bge_cdata.bge_parent_tag);
3562 }
3563
3564 static int
3565 bge_dma_alloc(struct bge_softc *sc)
3566 {
3567         struct ifnet *ifp = &sc->arpcom.ac_if;
3568         int i, error;
3569         bus_addr_t lowaddr;
3570         bus_size_t boundary;
3571
3572         boundary = 0;
3573         if (sc->bge_flags & BGE_FLAG_BOUNDARY_4G)
3574                 boundary = BGE_DMA_BOUNDARY_4G;
3575
3576         lowaddr = BUS_SPACE_MAXADDR;
3577         if (sc->bge_flags & BGE_FLAG_MAXADDR_40BIT)
3578                 lowaddr = BGE_DMA_MAXADDR_40BIT;
3579
3580         /*
3581          * Allocate the parent bus DMA tag appropriate for PCI.
3582          */
3583         error = bus_dma_tag_create(NULL, 1, boundary,
3584                                    lowaddr, BUS_SPACE_MAXADDR,
3585                                    NULL, NULL,
3586                                    BUS_SPACE_MAXSIZE_32BIT, 0,
3587                                    BUS_SPACE_MAXSIZE_32BIT,
3588                                    0, &sc->bge_cdata.bge_parent_tag);
3589         if (error) {
3590                 if_printf(ifp, "could not allocate parent dma tag\n");
3591                 return error;
3592         }
3593
3594         /*
3595          * Create DMA tag and maps for RX mbufs.
3596          */
3597         error = bus_dma_tag_create(sc->bge_cdata.bge_parent_tag, 1, 0,
3598                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
3599                                    NULL, NULL, MCLBYTES, 1, MCLBYTES,
3600                                    BUS_DMA_ALLOCNOW | BUS_DMA_WAITOK,
3601                                    &sc->bge_cdata.bge_rx_mtag);
3602         if (error) {
3603                 if_printf(ifp, "could not allocate RX mbuf dma tag\n");
3604                 return error;
3605         }
3606
3607         error = bus_dmamap_create(sc->bge_cdata.bge_rx_mtag,
3608                                   BUS_DMA_WAITOK, &sc->bge_cdata.bge_rx_tmpmap);
3609         if (error) {
3610                 bus_dma_tag_destroy(sc->bge_cdata.bge_rx_mtag);
3611                 sc->bge_cdata.bge_rx_mtag = NULL;
3612                 return error;
3613         }
3614
3615         for (i = 0; i < BGE_STD_RX_RING_CNT; i++) {
3616                 error = bus_dmamap_create(sc->bge_cdata.bge_rx_mtag,
3617                                           BUS_DMA_WAITOK,
3618                                           &sc->bge_cdata.bge_rx_std_dmamap[i]);
3619                 if (error) {
3620                         int j;
3621
3622                         for (j = 0; j < i; ++j) {
3623                                 bus_dmamap_destroy(sc->bge_cdata.bge_rx_mtag,
3624                                         sc->bge_cdata.bge_rx_std_dmamap[j]);
3625                         }
3626                         bus_dma_tag_destroy(sc->bge_cdata.bge_rx_mtag);
3627                         sc->bge_cdata.bge_rx_mtag = NULL;
3628
3629                         if_printf(ifp, "could not create DMA map for RX\n");
3630                         return error;
3631                 }
3632         }
3633
3634         /*
3635          * Create DMA tag and maps for TX mbufs.
3636          */
3637         error = bus_dma_tag_create(sc->bge_cdata.bge_parent_tag, 1, 0,
3638                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
3639                                    NULL, NULL,
3640                                    BGE_JUMBO_FRAMELEN, BGE_NSEG_NEW, MCLBYTES,
3641                                    BUS_DMA_ALLOCNOW | BUS_DMA_WAITOK |
3642                                    BUS_DMA_ONEBPAGE,
3643                                    &sc->bge_cdata.bge_tx_mtag);
3644         if (error) {
3645                 if_printf(ifp, "could not allocate TX mbuf dma tag\n");
3646                 return error;
3647         }
3648
3649         for (i = 0; i < BGE_TX_RING_CNT; i++) {
3650                 error = bus_dmamap_create(sc->bge_cdata.bge_tx_mtag,
3651                                           BUS_DMA_WAITOK | BUS_DMA_ONEBPAGE,
3652                                           &sc->bge_cdata.bge_tx_dmamap[i]);
3653                 if (error) {
3654                         int j;
3655
3656                         for (j = 0; j < i; ++j) {
3657                                 bus_dmamap_destroy(sc->bge_cdata.bge_tx_mtag,
3658                                         sc->bge_cdata.bge_tx_dmamap[j]);
3659                         }
3660                         bus_dma_tag_destroy(sc->bge_cdata.bge_tx_mtag);
3661                         sc->bge_cdata.bge_tx_mtag = NULL;
3662
3663                         if_printf(ifp, "could not create DMA map for TX\n");
3664                         return error;
3665                 }
3666         }
3667
3668         /*
3669          * Create DMA stuffs for standard RX ring.
3670          */
3671         error = bge_dma_block_alloc(sc, BGE_STD_RX_RING_SZ,
3672                                     &sc->bge_cdata.bge_rx_std_ring_tag,
3673                                     &sc->bge_cdata.bge_rx_std_ring_map,
3674                                     (void *)&sc->bge_ldata.bge_rx_std_ring,
3675                                     &sc->bge_ldata.bge_rx_std_ring_paddr);
3676         if (error) {
3677                 if_printf(ifp, "could not create std RX ring\n");
3678                 return error;
3679         }
3680
3681         /*
3682          * Create jumbo buffer pool.
3683          */
3684         if (BGE_IS_JUMBO_CAPABLE(sc)) {
3685                 error = bge_alloc_jumbo_mem(sc);
3686                 if (error) {
3687                         if_printf(ifp, "could not create jumbo buffer pool\n");
3688                         return error;
3689                 }
3690         }
3691
3692         /*
3693          * Create DMA stuffs for RX return ring.
3694          */
3695         error = bge_dma_block_alloc(sc, BGE_RX_RTN_RING_SZ(sc),
3696                                     &sc->bge_cdata.bge_rx_return_ring_tag,
3697                                     &sc->bge_cdata.bge_rx_return_ring_map,
3698                                     (void *)&sc->bge_ldata.bge_rx_return_ring,
3699                                     &sc->bge_ldata.bge_rx_return_ring_paddr);
3700         if (error) {
3701                 if_printf(ifp, "could not create RX ret ring\n");
3702                 return error;
3703         }
3704
3705         /*
3706          * Create DMA stuffs for TX ring.
3707          */
3708         error = bge_dma_block_alloc(sc, BGE_TX_RING_SZ,
3709                                     &sc->bge_cdata.bge_tx_ring_tag,
3710                                     &sc->bge_cdata.bge_tx_ring_map,
3711                                     (void *)&sc->bge_ldata.bge_tx_ring,
3712                                     &sc->bge_ldata.bge_tx_ring_paddr);
3713         if (error) {
3714                 if_printf(ifp, "could not create TX ring\n");
3715                 return error;
3716         }
3717
3718         /*
3719          * Create DMA stuffs for status block.
3720          */
3721         error = bge_dma_block_alloc(sc, BGE_STATUS_BLK_SZ,
3722                                     &sc->bge_cdata.bge_status_tag,
3723                                     &sc->bge_cdata.bge_status_map,
3724                                     (void *)&sc->bge_ldata.bge_status_block,
3725                                     &sc->bge_ldata.bge_status_block_paddr);
3726         if (error) {
3727                 if_printf(ifp, "could not create status block\n");
3728                 return error;
3729         }
3730
3731         /*
3732          * Create DMA stuffs for statistics block.
3733          */
3734         error = bge_dma_block_alloc(sc, BGE_STATS_SZ,
3735                                     &sc->bge_cdata.bge_stats_tag,
3736                                     &sc->bge_cdata.bge_stats_map,
3737                                     (void *)&sc->bge_ldata.bge_stats,
3738                                     &sc->bge_ldata.bge_stats_paddr);
3739         if (error) {
3740                 if_printf(ifp, "could not create stats block\n");
3741                 return error;
3742         }
3743         return 0;
3744 }
3745
3746 static int
3747 bge_dma_block_alloc(struct bge_softc *sc, bus_size_t size, bus_dma_tag_t *tag,
3748                     bus_dmamap_t *map, void **addr, bus_addr_t *paddr)
3749 {
3750         bus_dmamem_t dmem;
3751         int error;
3752
3753         error = bus_dmamem_coherent(sc->bge_cdata.bge_parent_tag, PAGE_SIZE, 0,
3754                                     BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
3755                                     size, BUS_DMA_WAITOK | BUS_DMA_ZERO, &dmem);
3756         if (error)
3757                 return error;
3758
3759         *tag = dmem.dmem_tag;
3760         *map = dmem.dmem_map;
3761         *addr = dmem.dmem_addr;
3762         *paddr = dmem.dmem_busaddr;
3763
3764         return 0;
3765 }
3766
3767 static void
3768 bge_dma_block_free(bus_dma_tag_t tag, bus_dmamap_t map, void *addr)
3769 {
3770         if (tag != NULL) {
3771                 bus_dmamap_unload(tag, map);
3772                 bus_dmamem_free(tag, addr, map);
3773                 bus_dma_tag_destroy(tag);
3774         }
3775 }
3776
3777 /*
3778  * Grrr. The link status word in the status block does
3779  * not work correctly on the BCM5700 rev AX and BX chips,
3780  * according to all available information. Hence, we have
3781  * to enable MII interrupts in order to properly obtain
3782  * async link changes. Unfortunately, this also means that
3783  * we have to read the MAC status register to detect link
3784  * changes, thereby adding an additional register access to
3785  * the interrupt handler.
3786  *
3787  * XXX: perhaps link state detection procedure used for
3788  * BGE_CHIPID_BCM5700_B2 can be used for others BCM5700 revisions.
3789  */
3790 static void
3791 bge_bcm5700_link_upd(struct bge_softc *sc, uint32_t status __unused)
3792 {
3793         struct ifnet *ifp = &sc->arpcom.ac_if;
3794         struct mii_data *mii = device_get_softc(sc->bge_miibus);
3795
3796         mii_pollstat(mii);
3797
3798         if (!sc->bge_link &&
3799             (mii->mii_media_status & IFM_ACTIVE) &&
3800             IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
3801                 sc->bge_link++;
3802                 if (bootverbose)
3803                         if_printf(ifp, "link UP\n");
3804         } else if (sc->bge_link &&
3805             (!(mii->mii_media_status & IFM_ACTIVE) ||
3806             IFM_SUBTYPE(mii->mii_media_active) == IFM_NONE)) {
3807                 sc->bge_link = 0;
3808                 if (bootverbose)
3809                         if_printf(ifp, "link DOWN\n");
3810         }
3811
3812         /* Clear the interrupt. */
3813         CSR_WRITE_4(sc, BGE_MAC_EVT_ENB, BGE_EVTENB_MI_INTERRUPT);
3814         bge_miibus_readreg(sc->bge_dev, 1, BRGPHY_MII_ISR);
3815         bge_miibus_writereg(sc->bge_dev, 1, BRGPHY_MII_IMR, BRGPHY_INTRS);
3816 }
3817
3818 static void
3819 bge_tbi_link_upd(struct bge_softc *sc, uint32_t status)
3820 {
3821         struct ifnet *ifp = &sc->arpcom.ac_if;
3822
3823 #define PCS_ENCODE_ERR  (BGE_MACSTAT_PORT_DECODE_ERROR|BGE_MACSTAT_MI_COMPLETE)
3824
3825         /*
3826          * Sometimes PCS encoding errors are detected in
3827          * TBI mode (on fiber NICs), and for some reason
3828          * the chip will signal them as link changes.
3829          * If we get a link change event, but the 'PCS
3830          * encoding error' bit in the MAC status register
3831          * is set, don't bother doing a link check.
3832          * This avoids spurious "gigabit link up" messages
3833          * that sometimes appear on fiber NICs during
3834          * periods of heavy traffic.
3835          */
3836         if (status & BGE_MACSTAT_TBI_PCS_SYNCHED) {
3837                 if (!sc->bge_link) {
3838                         sc->bge_link++;
3839                         if (sc->bge_asicrev == BGE_ASICREV_BCM5704) {
3840                                 BGE_CLRBIT(sc, BGE_MAC_MODE,
3841                                     BGE_MACMODE_TBI_SEND_CFGS);
3842                         }
3843                         CSR_WRITE_4(sc, BGE_MAC_STS, 0xFFFFFFFF);
3844
3845                         if (bootverbose)
3846                                 if_printf(ifp, "link UP\n");
3847
3848                         ifp->if_link_state = LINK_STATE_UP;
3849                         if_link_state_change(ifp);
3850                 }
3851         } else if ((status & PCS_ENCODE_ERR) != PCS_ENCODE_ERR) {
3852                 if (sc->bge_link) {
3853                         sc->bge_link = 0;
3854
3855                         if (bootverbose)
3856                                 if_printf(ifp, "link DOWN\n");
3857
3858                         ifp->if_link_state = LINK_STATE_DOWN;
3859                         if_link_state_change(ifp);
3860                 }
3861         }
3862
3863 #undef PCS_ENCODE_ERR
3864
3865         /* Clear the attention. */
3866         CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED |
3867             BGE_MACSTAT_CFG_CHANGED | BGE_MACSTAT_MI_COMPLETE |
3868             BGE_MACSTAT_LINK_CHANGED);
3869 }
3870
3871 static void
3872 bge_copper_link_upd(struct bge_softc *sc, uint32_t status __unused)
3873 {
3874         /*
3875          * Check that the AUTOPOLL bit is set before
3876          * processing the event as a real link change.
3877          * Turning AUTOPOLL on and off in the MII read/write
3878          * functions will often trigger a link status
3879          * interrupt for no reason.
3880          */
3881         if (CSR_READ_4(sc, BGE_MI_MODE) & BGE_MIMODE_AUTOPOLL) {
3882                 struct ifnet *ifp = &sc->arpcom.ac_if;
3883                 struct mii_data *mii = device_get_softc(sc->bge_miibus);
3884
3885                 mii_pollstat(mii);
3886
3887                 if (!sc->bge_link &&
3888                     (mii->mii_media_status & IFM_ACTIVE) &&
3889                     IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
3890                         sc->bge_link++;
3891                         if (bootverbose)
3892                                 if_printf(ifp, "link UP\n");
3893                 } else if (sc->bge_link &&
3894                     (!(mii->mii_media_status & IFM_ACTIVE) ||
3895                     IFM_SUBTYPE(mii->mii_media_active) == IFM_NONE)) {
3896                         sc->bge_link = 0;
3897                         if (bootverbose)
3898                                 if_printf(ifp, "link DOWN\n");
3899                 }
3900         }
3901
3902         /* Clear the attention. */
3903         CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED |
3904             BGE_MACSTAT_CFG_CHANGED | BGE_MACSTAT_MI_COMPLETE |
3905             BGE_MACSTAT_LINK_CHANGED);
3906 }
3907
3908 static int
3909 bge_sysctl_rx_coal_ticks(SYSCTL_HANDLER_ARGS)
3910 {
3911         struct bge_softc *sc = arg1;
3912
3913         return bge_sysctl_coal_chg(oidp, arg1, arg2, req,
3914                                    &sc->bge_rx_coal_ticks,
3915                                    BGE_RX_COAL_TICKS_CHG);
3916 }
3917
3918 static int
3919 bge_sysctl_tx_coal_ticks(SYSCTL_HANDLER_ARGS)
3920 {
3921         struct bge_softc *sc = arg1;
3922
3923         return bge_sysctl_coal_chg(oidp, arg1, arg2, req,
3924                                    &sc->bge_tx_coal_ticks,
3925                                    BGE_TX_COAL_TICKS_CHG);
3926 }
3927
3928 static int
3929 bge_sysctl_rx_max_coal_bds(SYSCTL_HANDLER_ARGS)
3930 {
3931         struct bge_softc *sc = arg1;
3932
3933         return bge_sysctl_coal_chg(oidp, arg1, arg2, req,
3934                                    &sc->bge_rx_max_coal_bds,
3935                                    BGE_RX_MAX_COAL_BDS_CHG);
3936 }
3937
3938 static int
3939 bge_sysctl_tx_max_coal_bds(SYSCTL_HANDLER_ARGS)
3940 {
3941         struct bge_softc *sc = arg1;
3942
3943         return bge_sysctl_coal_chg(oidp, arg1, arg2, req,
3944                                    &sc->bge_tx_max_coal_bds,
3945                                    BGE_TX_MAX_COAL_BDS_CHG);
3946 }
3947
3948 static int
3949 bge_sysctl_coal_chg(SYSCTL_HANDLER_ARGS, uint32_t *coal,
3950                     uint32_t coal_chg_mask)
3951 {
3952         struct bge_softc *sc = arg1;
3953         struct ifnet *ifp = &sc->arpcom.ac_if;
3954         int error = 0, v;
3955
3956         lwkt_serial