1 /*-
2 * Copyright (c) 2009, Pyun YongHyeon <yongari@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice unmodified, this list of conditions, and the following
10 * 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 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 * $FreeBSD: src/sys/dev/alc/if_alc.c,v 1.6 2009/09/29 23:03:16 yongari Exp $
28 */
29
30 /* Driver for Atheros AR8131/AR8132 PCIe Ethernet. */
31
32 #include <sys/param.h>
33 #include <sys/bitops.h>
34 #include <sys/endian.h>
35 #include <sys/kernel.h>
36 #include <sys/bus.h>
37 #include <sys/interrupt.h>
38 #include <sys/malloc.h>
39 #include <sys/proc.h>
40 #include <sys/rman.h>
41 #include <sys/serialize.h>
42 #include <sys/socket.h>
43 #include <sys/sockio.h>
44 #include <sys/sysctl.h>
45 #include <sys/in_cksum.h>
46
47 #include <net/ethernet.h>
48 #include <net/if.h>
49 #include <net/bpf.h>
50 #include <net/if_arp.h>
51 #include <net/if_dl.h>
52 #include <net/if_media.h>
53 #include <net/ifq_var.h>
54 #include <net/vlan/if_vlan_var.h>
55 #include <net/vlan/if_vlan_ether.h>
56
57 #include <netinet/ip.h>
58 #include <netinet/tcp.h>
59
60 #include <dev/netif/mii_layer/mii.h>
61 #include <dev/netif/mii_layer/miivar.h>
62
63 #include <bus/pci/pcireg.h>
64 #include <bus/pci/pcivar.h>
65 #include "pcidevs.h"
66
67 #include <dev/netif/alc/if_alcreg.h>
68 #include <dev/netif/alc/if_alcvar.h>
69
70 /* "device miibus" required. See GENERIC if you get errors here. */
71 #include "miibus_if.h"
72
73 #undef ALC_USE_CUSTOM_CSUM
74 #ifdef ALC_USE_CUSTOM_CSUM
75 #define ALC_CSUM_FEATURES (CSUM_TCP | CSUM_UDP)
76 #else
77 #define ALC_CSUM_FEATURES (CSUM_IP | CSUM_TCP | CSUM_UDP)
78 #endif
79
80 #define ALC_LOCK(sc)
81 #define ALC_UNLOCK(sc)
82 #define ALC_LOCK_ASSERT(sc)
83
84 #define PCIER_LINK_CAP PCIER_LINKCAP
85 #define PCIEM_LINK_CAP_ASPM PCIEM_LNKCAP_ASPM_MASK
86 #define PCIER_LINK_CTL PCIER_LINKCTRL
87 #define PCIEM_LINK_CTL_RCB PCIEM_LNKCTL_RCB
88 #define PCIEM_LINK_CTL_ASPMC PCIEM_LNKCTL_ASPM_MASK
89 #define PCIEM_LINK_CTL_ASPMC_L0S PCIEM_LNKCTL_ASPM_L0S
90 #define PCIEM_LINK_CTL_ASPMC_L1 PCIEM_LNKCTL_ASPM_L1
91 #define PCIEM_LINK_CTL_EXTENDED_SYNC PCIEM_LNKCTL_EXTENDED_SYNC
92 #define PCIER_DEVICE_CTL PCIER_DEVCTRL
93 #define PCIEM_CTL_MAX_READ_REQUEST PCIEM_DEVCTL_MAX_READRQ_MASK
94 #define PCIEM_CTL_MAX_PAYLOAD PCIEM_DEVCTL_MAX_PAYLOAD_MASK
95
96 /* Tunables. */
97 static int alc_msi_enable = 1;
98 TUNABLE_INT("hw.alc.msi.enable", &alc_msi_enable);
99
100 /*
101 * Devices supported by this driver.
102 */
103
104 static struct alc_ident alc_ident_table[] = {
105 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8131, 9 * 1024,
106 "Atheros AR8131 PCIe Gigabit Ethernet" },
107 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8132, 9 * 1024,
108 "Atheros AR8132 PCIe Fast Ethernet" },
109 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8151, 6 * 1024,
110 "Atheros AR8151 v1.0 PCIe Gigabit Ethernet" },
111 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8151_V2, 6 * 1024,
112 "Atheros AR8151 v2.0 PCIe Gigabit Ethernet" },
113 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8152_B, 6 * 1024,
114 "Atheros AR8152 v1.1 PCIe Fast Ethernet" },
115 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8152_B2, 6 * 1024,
116 "Atheros AR8152 v2.0 PCIe Fast Ethernet" },
117 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8161, 9 * 1024,
118 "Atheros AR8161 PCIe Gigabit Ethernet" },
119 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8162, 9 * 1024,
120 "Atheros AR8162 PCIe Fast Ethernet" },
121 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8171, 9 * 1024,
122 "Atheros AR8171 PCIe Gigabit Ethernet" },
123 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8172, 9 * 1024,
124 "Atheros AR8172 PCIe Fast Ethernet" },
125 { VENDORID_ATHEROS, DEVICEID_ATHEROS_E2200, 9 * 1024,
126 "Killer E2200 Gigabit Ethernet" },
127 { VENDORID_ATHEROS, DEVICEID_ATHEROS_E2400, 9 * 1024,
128 "Killer E2400 Gigabit Ethernet" },
129 { VENDORID_ATHEROS, DEVICEID_ATHEROS_E2500, 9 * 1024,
130 "Killer E2500 Gigabit Ethernet" },
131 { 0, 0, 0, NULL}
132 };
133
134 static int alc_attach(device_t);
135 static int alc_probe(device_t);
136 static int alc_detach(device_t);
137 static int alc_shutdown(device_t);
138 static int alc_suspend(device_t);
139 static int alc_resume(device_t);
140 static int alc_miibus_readreg(device_t, int, int);
141 static void alc_miibus_statchg(device_t);
142 static int alc_miibus_writereg(device_t, int, int, int);
143 static uint32_t alc_miidbg_readreg(struct alc_softc *, int);
144 static uint32_t alc_miidbg_writereg(struct alc_softc *, int, int);
145 static uint32_t alc_miiext_readreg(struct alc_softc *, int, int);
146 static uint32_t alc_miiext_writereg(struct alc_softc *, int, int, int);
147 static void alc_init(void *);
148 static void alc_start(struct ifnet *, struct ifaltq_subque *);
149 static void alc_watchdog(struct alc_softc *);
150 static int alc_mediachange(struct ifnet *);
151 static int alc_mediachange_locked(struct alc_softc *);
152 static void alc_mediastatus(struct ifnet *, struct ifmediareq *);
153 static int alc_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *);
154
155 static void alc_aspm(struct alc_softc *, int, int);
156 static void alc_aspm_813x(struct alc_softc *, int);
157 static void alc_aspm_816x(struct alc_softc *, int);
158 #ifdef foo
159 static int alc_check_boundary(struct alc_softc *);
160 #endif
161 static void alc_config_msi(struct alc_softc *);
162 static void alc_disable_l0s_l1(struct alc_softc *);
163 static int alc_dma_alloc(struct alc_softc *);
164 static void alc_dma_free(struct alc_softc *);
165 static void alc_dmamap_cb(void *, bus_dma_segment_t *, int, int);
166 static void alc_dsp_fixup(struct alc_softc *, int);
167 static int alc_encap(struct alc_softc *, struct mbuf **);
168 static struct alc_ident *alc_find_ident(device_t);
169 static void alc_get_macaddr(struct alc_softc *);
170 static void alc_get_macaddr_813x(struct alc_softc *);
171 static void alc_get_macaddr_816x(struct alc_softc *);
172 static void alc_get_macaddr_par(struct alc_softc *);
173 static void alc_init_cmb(struct alc_softc *);
174 static void alc_init_rr_ring(struct alc_softc *);
175 static int alc_init_rx_ring(struct alc_softc *);
176 static void alc_init_smb(struct alc_softc *);
177 static void alc_init_tx_ring(struct alc_softc *);
178 static void alc_intr(void *);
179 static void alc_mac_config(struct alc_softc *);
180 static uint32_t alc_mii_readreg_813x(struct alc_softc *, int, int);
181 static uint32_t alc_mii_readreg_816x(struct alc_softc *, int, int);
182 static uint32_t alc_mii_writereg_813x(struct alc_softc *, int, int, int);
183 static uint32_t alc_mii_writereg_816x(struct alc_softc *, int, int, int);
184 static int alc_newbuf(struct alc_softc *, struct alc_rxdesc *, boolean_t);
185 static void alc_osc_reset(struct alc_softc *);
186 static void alc_phy_down(struct alc_softc *);
187 static void alc_phy_reset(struct alc_softc *);
188 static void alc_phy_reset_813x(struct alc_softc *);
189 static void alc_phy_reset_816x(struct alc_softc *);
190 static void alc_reset(struct alc_softc *);
191 static void alc_rxeof(struct alc_softc *, struct rx_rdesc *);
192 static int alc_rxintr(struct alc_softc *);
193 static void alc_rxfilter(struct alc_softc *);
194 static void alc_rxvlan(struct alc_softc *);
195 #if 0
196 static void alc_setlinkspeed(struct alc_softc *);
197 /* XXX: WOL */
198 static void alc_setwol(struct alc_softc *);
199 static void alc_setwol_813x(struct alc_softc *);
200 static void alc_setwol_816x(struct alc_softc *);
201 #endif
202 static void alc_start_queue(struct alc_softc *);
203 static void alc_stats_clear(struct alc_softc *);
204 static void alc_stats_update(struct alc_softc *);
205 static void alc_stop(struct alc_softc *);
206 static void alc_stop_mac(struct alc_softc *);
207 static void alc_stop_queue(struct alc_softc *);
208 static void alc_sysctl_node(struct alc_softc *);
209 static void alc_tick(void *);
210 static void alc_txeof(struct alc_softc *);
211 static int sysctl_hw_alc_proc_limit(SYSCTL_HANDLER_ARGS);
212 static int sysctl_hw_alc_int_mod(SYSCTL_HANDLER_ARGS);
213
214 static device_method_t alc_methods[] = {
215 /* Device interface. */
216 DEVMETHOD(device_probe, alc_probe),
217 DEVMETHOD(device_attach, alc_attach),
218 DEVMETHOD(device_detach, alc_detach),
219 DEVMETHOD(device_shutdown, alc_shutdown),
220 DEVMETHOD(device_suspend, alc_suspend),
221 DEVMETHOD(device_resume, alc_resume),
222
223 /* MII interface. */
224 DEVMETHOD(miibus_readreg, alc_miibus_readreg),
225 DEVMETHOD(miibus_writereg, alc_miibus_writereg),
226 DEVMETHOD(miibus_statchg, alc_miibus_statchg),
227
228 { NULL, NULL }
229 };
230
231 static DEFINE_CLASS_0(alc, alc_driver, alc_methods, sizeof(struct alc_softc));
232 static devclass_t alc_devclass;
233
234 DECLARE_DUMMY_MODULE(if_alc);
235 DRIVER_MODULE(if_alc, pci, alc_driver, alc_devclass, NULL, NULL);
236 DRIVER_MODULE(miibus, alc, miibus_driver, miibus_devclass, NULL, NULL);
237
238 static const uint32_t alc_dma_burst[] =
239 { 128, 256, 512, 1024, 2048, 4096, 0, 0 };
240
241 static int
alc_miibus_readreg(device_t dev,int phy,int reg)242 alc_miibus_readreg(device_t dev, int phy, int reg)
243 {
244 struct alc_softc *sc;
245 int v;
246
247 sc = device_get_softc(dev);
248 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
249 v = alc_mii_readreg_816x(sc, phy, reg);
250 else
251 v = alc_mii_readreg_813x(sc, phy, reg);
252 return (v);
253 }
254
255 static uint32_t
alc_mii_readreg_813x(struct alc_softc * sc,int phy,int reg)256 alc_mii_readreg_813x(struct alc_softc *sc, int phy, int reg)
257 {
258 uint32_t v;
259 int i;
260
261 /*
262 * For AR8132 fast ethernet controller, do not report 1000baseT
263 * capability to mii(4). Even though AR8132 uses the same
264 * model/revision number of F1 gigabit PHY, the PHY has no
265 * ability to establish 1000baseT link.
266 */
267 if ((sc->alc_flags & ALC_FLAG_FASTETHER) != 0 &&
268 reg == MII_EXTSR)
269 return (0);
270
271 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_READ |
272 MDIO_SUP_PREAMBLE | MDIO_CLK_25_4 | MDIO_REG_ADDR(reg));
273 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
274 DELAY(5);
275 v = CSR_READ_4(sc, ALC_MDIO);
276 if ((v & (MDIO_OP_EXECUTE | MDIO_OP_BUSY)) == 0)
277 break;
278 }
279
280 if (i == 0) {
281 device_printf(sc->alc_dev, "phy read timeout : %d\n", reg);
282 return (0);
283 }
284
285 return ((v & MDIO_DATA_MASK) >> MDIO_DATA_SHIFT);
286 }
287
288 static uint32_t
alc_mii_readreg_816x(struct alc_softc * sc,int phy,int reg)289 alc_mii_readreg_816x(struct alc_softc *sc, int phy, int reg)
290 {
291 uint32_t clk, v;
292 int i;
293
294 if ((sc->alc_flags & ALC_FLAG_LINK) != 0)
295 clk = MDIO_CLK_25_128;
296 else
297 clk = MDIO_CLK_25_4;
298 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_READ |
299 MDIO_SUP_PREAMBLE | clk | MDIO_REG_ADDR(reg));
300 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
301 DELAY(5);
302 v = CSR_READ_4(sc, ALC_MDIO);
303 if ((v & MDIO_OP_BUSY) == 0)
304 break;
305 }
306
307 if (i == 0) {
308 device_printf(sc->alc_dev, "phy read timeout : %d\n", reg);
309 return (0);
310 }
311
312 return ((v & MDIO_DATA_MASK) >> MDIO_DATA_SHIFT);
313 }
314
315 static int
alc_miibus_writereg(device_t dev,int phy,int reg,int val)316 alc_miibus_writereg(device_t dev, int phy, int reg, int val)
317 {
318 struct alc_softc *sc;
319 int v;
320
321 sc = device_get_softc(dev);
322 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
323 v = alc_mii_writereg_816x(sc, phy, reg, val);
324 else
325 v = alc_mii_writereg_813x(sc, phy, reg, val);
326 return (v);
327 }
328
329 static uint32_t
alc_mii_writereg_813x(struct alc_softc * sc,int phy,int reg,int val)330 alc_mii_writereg_813x(struct alc_softc *sc, int phy, int reg, int val)
331 {
332 uint32_t v;
333 int i;
334
335 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_WRITE |
336 (val & MDIO_DATA_MASK) << MDIO_DATA_SHIFT |
337 MDIO_SUP_PREAMBLE | MDIO_CLK_25_4 | MDIO_REG_ADDR(reg));
338 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
339 DELAY(5);
340 v = CSR_READ_4(sc, ALC_MDIO);
341 if ((v & (MDIO_OP_EXECUTE | MDIO_OP_BUSY)) == 0)
342 break;
343 }
344
345 if (i == 0)
346 device_printf(sc->alc_dev, "phy write timeout : %d\n", reg);
347
348 return (0);
349 }
350
351 static uint32_t
alc_mii_writereg_816x(struct alc_softc * sc,int phy,int reg,int val)352 alc_mii_writereg_816x(struct alc_softc *sc, int phy, int reg, int val)
353 {
354 uint32_t clk, v;
355 int i;
356
357 if ((sc->alc_flags & ALC_FLAG_LINK) != 0)
358 clk = MDIO_CLK_25_128;
359 else
360 clk = MDIO_CLK_25_4;
361 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_WRITE |
362 ((val & MDIO_DATA_MASK) << MDIO_DATA_SHIFT) | MDIO_REG_ADDR(reg) |
363 MDIO_SUP_PREAMBLE | clk);
364 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
365 DELAY(5);
366 v = CSR_READ_4(sc, ALC_MDIO);
367 if ((v & MDIO_OP_BUSY) == 0)
368 break;
369 }
370
371 if (i == 0)
372 device_printf(sc->alc_dev, "phy write timeout : %d\n", reg);
373
374 return (0);
375 }
376
377 static void
alc_miibus_statchg(device_t dev)378 alc_miibus_statchg(device_t dev)
379 {
380 struct alc_softc *sc;
381 struct mii_data *mii;
382 struct ifnet *ifp;
383 uint32_t reg;
384
385 sc = device_get_softc(dev);
386
387 mii = device_get_softc(sc->alc_miibus);
388 ifp = sc->alc_ifp;
389 if (mii == NULL || ifp == NULL ||
390 (ifp->if_flags & IFF_RUNNING) == 0)
391 return;
392
393 sc->alc_flags &= ~ALC_FLAG_LINK;
394 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) ==
395 (IFM_ACTIVE | IFM_AVALID)) {
396 switch (IFM_SUBTYPE(mii->mii_media_active)) {
397 case IFM_10_T:
398 case IFM_100_TX:
399 sc->alc_flags |= ALC_FLAG_LINK;
400 break;
401 case IFM_1000_T:
402 if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0)
403 sc->alc_flags |= ALC_FLAG_LINK;
404 break;
405 default:
406 break;
407 }
408 }
409 /* Stop Rx/Tx MACs. */
410 alc_stop_mac(sc);
411
412 /* Program MACs with resolved speed/duplex/flow-control. */
413 if ((sc->alc_flags & ALC_FLAG_LINK) != 0) {
414 alc_start_queue(sc);
415 alc_mac_config(sc);
416 /* Re-enable Tx/Rx MACs. */
417 reg = CSR_READ_4(sc, ALC_MAC_CFG);
418 reg |= MAC_CFG_TX_ENB | MAC_CFG_RX_ENB;
419 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
420 }
421 alc_aspm(sc, 0, IFM_SUBTYPE(mii->mii_media_active));
422 alc_dsp_fixup(sc, IFM_SUBTYPE(mii->mii_media_active));
423 }
424
425 static uint32_t
alc_miidbg_readreg(struct alc_softc * sc,int reg)426 alc_miidbg_readreg(struct alc_softc *sc, int reg)
427 {
428
429 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_ADDR,
430 reg);
431 return (alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
432 ALC_MII_DBG_DATA));
433 }
434
435 static uint32_t
alc_miidbg_writereg(struct alc_softc * sc,int reg,int val)436 alc_miidbg_writereg(struct alc_softc *sc, int reg, int val)
437 {
438
439 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_ADDR,
440 reg);
441 return (alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
442 ALC_MII_DBG_DATA, val));
443 }
444
445 static uint32_t
alc_miiext_readreg(struct alc_softc * sc,int devaddr,int reg)446 alc_miiext_readreg(struct alc_softc *sc, int devaddr, int reg)
447 {
448 uint32_t clk, v;
449 int i;
450
451 CSR_WRITE_4(sc, ALC_EXT_MDIO, EXT_MDIO_REG(reg) |
452 EXT_MDIO_DEVADDR(devaddr));
453 if ((sc->alc_flags & ALC_FLAG_LINK) != 0)
454 clk = MDIO_CLK_25_128;
455 else
456 clk = MDIO_CLK_25_4;
457 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_READ |
458 MDIO_SUP_PREAMBLE | clk | MDIO_MODE_EXT);
459 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
460 DELAY(5);
461 v = CSR_READ_4(sc, ALC_MDIO);
462 if ((v & MDIO_OP_BUSY) == 0)
463 break;
464 }
465
466 if (i == 0) {
467 device_printf(sc->alc_dev, "phy ext read timeout : %d, %d\n",
468 devaddr, reg);
469 return (0);
470 }
471
472 return ((v & MDIO_DATA_MASK) >> MDIO_DATA_SHIFT);
473 }
474
475 static uint32_t
alc_miiext_writereg(struct alc_softc * sc,int devaddr,int reg,int val)476 alc_miiext_writereg(struct alc_softc *sc, int devaddr, int reg, int val)
477 {
478 uint32_t clk, v;
479 int i;
480
481 CSR_WRITE_4(sc, ALC_EXT_MDIO, EXT_MDIO_REG(reg) |
482 EXT_MDIO_DEVADDR(devaddr));
483 if ((sc->alc_flags & ALC_FLAG_LINK) != 0)
484 clk = MDIO_CLK_25_128;
485 else
486 clk = MDIO_CLK_25_4;
487 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_WRITE |
488 ((val & MDIO_DATA_MASK) << MDIO_DATA_SHIFT) |
489 MDIO_SUP_PREAMBLE | clk | MDIO_MODE_EXT);
490 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
491 DELAY(5);
492 v = CSR_READ_4(sc, ALC_MDIO);
493 if ((v & MDIO_OP_BUSY) == 0)
494 break;
495 }
496
497 if (i == 0)
498 device_printf(sc->alc_dev, "phy ext write timeout : %d, %d\n",
499 devaddr, reg);
500
501 return (0);
502 }
503
504 static void
alc_dsp_fixup(struct alc_softc * sc,int media)505 alc_dsp_fixup(struct alc_softc *sc, int media)
506 {
507 uint16_t agc, len, val;
508
509 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
510 return;
511 if (AR816X_REV(sc->alc_rev) >= AR816X_REV_C0)
512 return;
513
514 /*
515 * Vendor PHY magic.
516 * 1000BT/AZ, wrong cable length
517 */
518 if ((sc->alc_flags & ALC_FLAG_LINK) != 0) {
519 len = alc_miiext_readreg(sc, MII_EXT_PCS, MII_EXT_CLDCTL6);
520 len = (len >> EXT_CLDCTL6_CAB_LEN_SHIFT) &
521 EXT_CLDCTL6_CAB_LEN_MASK;
522 agc = alc_miidbg_readreg(sc, MII_DBG_AGC);
523 agc = (agc >> DBG_AGC_2_VGA_SHIFT) & DBG_AGC_2_VGA_MASK;
524 if ((media == IFM_1000_T && len > EXT_CLDCTL6_CAB_LEN_SHORT1G &&
525 agc > DBG_AGC_LONG1G_LIMT) ||
526 (media == IFM_100_TX && len > DBG_AGC_LONG100M_LIMT &&
527 agc > DBG_AGC_LONG1G_LIMT)) {
528 alc_miidbg_writereg(sc, MII_DBG_AZ_ANADECT,
529 DBG_AZ_ANADECT_LONG);
530 val = alc_miiext_readreg(sc, MII_EXT_ANEG,
531 MII_EXT_ANEG_AFE);
532 val |= ANEG_AFEE_10BT_100M_TH;
533 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_AFE,
534 val);
535 } else {
536 alc_miidbg_writereg(sc, MII_DBG_AZ_ANADECT,
537 DBG_AZ_ANADECT_DEFAULT);
538 val = alc_miiext_readreg(sc, MII_EXT_ANEG,
539 MII_EXT_ANEG_AFE);
540 val &= ~ANEG_AFEE_10BT_100M_TH;
541 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_AFE,
542 val);
543 }
544 if ((sc->alc_flags & ALC_FLAG_LINK_WAR) != 0 &&
545 AR816X_REV(sc->alc_rev) == AR816X_REV_B0) {
546 if (media == IFM_1000_T) {
547 /*
548 * Giga link threshold, raise the tolerance of
549 * noise 50%.
550 */
551 val = alc_miidbg_readreg(sc, MII_DBG_MSE20DB);
552 val &= ~DBG_MSE20DB_TH_MASK;
553 val |= (DBG_MSE20DB_TH_HI <<
554 DBG_MSE20DB_TH_SHIFT);
555 alc_miidbg_writereg(sc, MII_DBG_MSE20DB, val);
556 } else if (media == IFM_100_TX)
557 alc_miidbg_writereg(sc, MII_DBG_MSE16DB,
558 DBG_MSE16DB_UP);
559 }
560 } else {
561 val = alc_miiext_readreg(sc, MII_EXT_ANEG, MII_EXT_ANEG_AFE);
562 val &= ~ANEG_AFEE_10BT_100M_TH;
563 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_AFE, val);
564 if ((sc->alc_flags & ALC_FLAG_LINK_WAR) != 0 &&
565 AR816X_REV(sc->alc_rev) == AR816X_REV_B0) {
566 alc_miidbg_writereg(sc, MII_DBG_MSE16DB,
567 DBG_MSE16DB_DOWN);
568 val = alc_miidbg_readreg(sc, MII_DBG_MSE20DB);
569 val &= ~DBG_MSE20DB_TH_MASK;
570 val |= (DBG_MSE20DB_TH_DEFAULT << DBG_MSE20DB_TH_SHIFT);
571 alc_miidbg_writereg(sc, MII_DBG_MSE20DB, val);
572 }
573 }
574 }
575
576 static void
alc_mediastatus(struct ifnet * ifp,struct ifmediareq * ifmr)577 alc_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr)
578 {
579 struct alc_softc *sc;
580 struct mii_data *mii;
581
582 sc = ifp->if_softc;
583 if ((ifp->if_flags & IFF_UP) == 0) {
584 return;
585 }
586 mii = device_get_softc(sc->alc_miibus);
587
588 mii_pollstat(mii);
589 ifmr->ifm_status = mii->mii_media_status;
590 ifmr->ifm_active = mii->mii_media_active;
591 }
592
593 static int
alc_mediachange(struct ifnet * ifp)594 alc_mediachange(struct ifnet *ifp)
595 {
596 struct alc_softc *sc;
597 int error;
598
599 sc = ifp->if_softc;
600 ALC_LOCK(sc);
601 error = alc_mediachange_locked(sc);
602 ALC_UNLOCK(sc);
603
604 return (error);
605 }
606
607 static int
alc_mediachange_locked(struct alc_softc * sc)608 alc_mediachange_locked(struct alc_softc *sc)
609 {
610 struct mii_data *mii;
611 struct mii_softc *miisc;
612 int error;
613
614 ALC_LOCK_ASSERT(sc);
615
616 mii = device_get_softc(sc->alc_miibus);
617 if (mii->mii_instance != 0) {
618 LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
619 mii_phy_reset(miisc);
620 }
621 error = mii_mediachg(mii);
622
623 return (error);
624 }
625
626 static struct alc_ident *
alc_find_ident(device_t dev)627 alc_find_ident(device_t dev)
628 {
629 struct alc_ident *ident;
630 uint16_t vendor, devid;
631
632 vendor = pci_get_vendor(dev);
633 devid = pci_get_device(dev);
634 for (ident = alc_ident_table; ident->name != NULL; ident++) {
635 if (vendor == ident->vendorid && devid == ident->deviceid)
636 return (ident);
637 }
638
639 return (NULL);
640 }
641
642 static int
alc_probe(device_t dev)643 alc_probe(device_t dev)
644 {
645 struct alc_ident *ident;
646
647 ident = alc_find_ident(dev);
648 if (ident != NULL) {
649 device_set_desc(dev, ident->name);
650 return (BUS_PROBE_DEFAULT);
651 }
652
653 return (ENXIO);
654 }
655
656 static void
alc_get_macaddr(struct alc_softc * sc)657 alc_get_macaddr(struct alc_softc *sc)
658 {
659
660 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
661 alc_get_macaddr_816x(sc);
662 else
663 alc_get_macaddr_813x(sc);
664 }
665
666 static void
alc_get_macaddr_813x(struct alc_softc * sc)667 alc_get_macaddr_813x(struct alc_softc *sc)
668 {
669 uint32_t opt;
670 uint16_t val;
671 int eeprom, i;
672
673 eeprom = 0;
674 opt = CSR_READ_4(sc, ALC_OPT_CFG);
675 if ((CSR_READ_4(sc, ALC_MASTER_CFG) & MASTER_OTP_SEL) != 0 &&
676 (CSR_READ_4(sc, ALC_TWSI_DEBUG) & TWSI_DEBUG_DEV_EXIST) != 0) {
677 /*
678 * EEPROM found, let TWSI reload EEPROM configuration.
679 * This will set ethernet address of controller.
680 */
681 eeprom++;
682 switch (sc->alc_ident->deviceid) {
683 case DEVICEID_ATHEROS_AR8131:
684 case DEVICEID_ATHEROS_AR8132:
685 if ((opt & OPT_CFG_CLK_ENB) == 0) {
686 opt |= OPT_CFG_CLK_ENB;
687 CSR_WRITE_4(sc, ALC_OPT_CFG, opt);
688 CSR_READ_4(sc, ALC_OPT_CFG);
689 DELAY(1000);
690 }
691 break;
692 case DEVICEID_ATHEROS_AR8151:
693 case DEVICEID_ATHEROS_AR8151_V2:
694 case DEVICEID_ATHEROS_AR8152_B:
695 case DEVICEID_ATHEROS_AR8152_B2:
696 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
697 ALC_MII_DBG_ADDR, 0x00);
698 val = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
699 ALC_MII_DBG_DATA);
700 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
701 ALC_MII_DBG_DATA, val & 0xFF7F);
702 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
703 ALC_MII_DBG_ADDR, 0x3B);
704 val = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
705 ALC_MII_DBG_DATA);
706 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
707 ALC_MII_DBG_DATA, val | 0x0008);
708 DELAY(20);
709 break;
710 }
711
712 CSR_WRITE_4(sc, ALC_LTSSM_ID_CFG,
713 CSR_READ_4(sc, ALC_LTSSM_ID_CFG) & ~LTSSM_ID_WRO_ENB);
714 CSR_WRITE_4(sc, ALC_WOL_CFG, 0);
715 CSR_READ_4(sc, ALC_WOL_CFG);
716
717 CSR_WRITE_4(sc, ALC_TWSI_CFG, CSR_READ_4(sc, ALC_TWSI_CFG) |
718 TWSI_CFG_SW_LD_START);
719 for (i = 100; i > 0; i--) {
720 DELAY(1000);
721 if ((CSR_READ_4(sc, ALC_TWSI_CFG) &
722 TWSI_CFG_SW_LD_START) == 0)
723 break;
724 }
725 if (i == 0)
726 device_printf(sc->alc_dev,
727 "reloading EEPROM timeout!\n");
728 } else {
729 if (bootverbose)
730 device_printf(sc->alc_dev, "EEPROM not found!\n");
731 }
732 if (eeprom != 0) {
733 switch (sc->alc_ident->deviceid) {
734 case DEVICEID_ATHEROS_AR8131:
735 case DEVICEID_ATHEROS_AR8132:
736 if ((opt & OPT_CFG_CLK_ENB) != 0) {
737 opt &= ~OPT_CFG_CLK_ENB;
738 CSR_WRITE_4(sc, ALC_OPT_CFG, opt);
739 CSR_READ_4(sc, ALC_OPT_CFG);
740 DELAY(1000);
741 }
742 break;
743 case DEVICEID_ATHEROS_AR8151:
744 case DEVICEID_ATHEROS_AR8151_V2:
745 case DEVICEID_ATHEROS_AR8152_B:
746 case DEVICEID_ATHEROS_AR8152_B2:
747 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
748 ALC_MII_DBG_ADDR, 0x00);
749 val = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
750 ALC_MII_DBG_DATA);
751 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
752 ALC_MII_DBG_DATA, val | 0x0080);
753 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
754 ALC_MII_DBG_ADDR, 0x3B);
755 val = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
756 ALC_MII_DBG_DATA);
757 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
758 ALC_MII_DBG_DATA, val & 0xFFF7);
759 DELAY(20);
760 break;
761 }
762 }
763
764 alc_get_macaddr_par(sc);
765 }
766
767 static void
alc_get_macaddr_816x(struct alc_softc * sc)768 alc_get_macaddr_816x(struct alc_softc *sc)
769 {
770 uint32_t reg;
771 int i, reloaded;
772
773 reloaded = 0;
774 /* Try to reload station address via TWSI. */
775 for (i = 100; i > 0; i--) {
776 reg = CSR_READ_4(sc, ALC_SLD);
777 if ((reg & (SLD_PROGRESS | SLD_START)) == 0)
778 break;
779 DELAY(1000);
780 }
781 if (i != 0) {
782 CSR_WRITE_4(sc, ALC_SLD, reg | SLD_START);
783 for (i = 100; i > 0; i--) {
784 DELAY(1000);
785 reg = CSR_READ_4(sc, ALC_SLD);
786 if ((reg & SLD_START) == 0)
787 break;
788 }
789 if (i != 0)
790 reloaded++;
791 else if (bootverbose)
792 device_printf(sc->alc_dev,
793 "reloading station address via TWSI timed out!\n");
794 }
795
796 /* Try to reload station address from EEPROM or FLASH. */
797 if (reloaded == 0) {
798 reg = CSR_READ_4(sc, ALC_EEPROM_LD);
799 if ((reg & (EEPROM_LD_EEPROM_EXIST |
800 EEPROM_LD_FLASH_EXIST)) != 0) {
801 for (i = 100; i > 0; i--) {
802 reg = CSR_READ_4(sc, ALC_EEPROM_LD);
803 if ((reg & (EEPROM_LD_PROGRESS |
804 EEPROM_LD_START)) == 0)
805 break;
806 DELAY(1000);
807 }
808 if (i != 0) {
809 CSR_WRITE_4(sc, ALC_EEPROM_LD, reg |
810 EEPROM_LD_START);
811 for (i = 100; i > 0; i--) {
812 DELAY(1000);
813 reg = CSR_READ_4(sc, ALC_EEPROM_LD);
814 if ((reg & EEPROM_LD_START) == 0)
815 break;
816 }
817 } else if (bootverbose)
818 device_printf(sc->alc_dev,
819 "reloading EEPROM/FLASH timed out!\n");
820 }
821 }
822
823 alc_get_macaddr_par(sc);
824 }
825
826 static void
alc_get_macaddr_par(struct alc_softc * sc)827 alc_get_macaddr_par(struct alc_softc *sc)
828 {
829 uint32_t ea[2];
830
831 ea[0] = CSR_READ_4(sc, ALC_PAR0);
832 ea[1] = CSR_READ_4(sc, ALC_PAR1);
833 sc->alc_eaddr[0] = (ea[1] >> 8) & 0xFF;
834 sc->alc_eaddr[1] = (ea[1] >> 0) & 0xFF;
835 sc->alc_eaddr[2] = (ea[0] >> 24) & 0xFF;
836 sc->alc_eaddr[3] = (ea[0] >> 16) & 0xFF;
837 sc->alc_eaddr[4] = (ea[0] >> 8) & 0xFF;
838 sc->alc_eaddr[5] = (ea[0] >> 0) & 0xFF;
839 }
840
841 static void
alc_disable_l0s_l1(struct alc_softc * sc)842 alc_disable_l0s_l1(struct alc_softc *sc)
843 {
844 uint32_t pmcfg;
845
846 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
847 /* Another magic from vendor. */
848 pmcfg = CSR_READ_4(sc, ALC_PM_CFG);
849 pmcfg &= ~(PM_CFG_L1_ENTRY_TIMER_MASK | PM_CFG_CLK_SWH_L1 |
850 PM_CFG_ASPM_L0S_ENB | PM_CFG_ASPM_L1_ENB |
851 PM_CFG_MAC_ASPM_CHK | PM_CFG_SERDES_PD_EX_L1);
852 pmcfg |= PM_CFG_SERDES_BUDS_RX_L1_ENB |
853 PM_CFG_SERDES_PLL_L1_ENB | PM_CFG_SERDES_L1_ENB;
854 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg);
855 }
856 }
857
858 static void
alc_phy_reset(struct alc_softc * sc)859 alc_phy_reset(struct alc_softc *sc)
860 {
861
862 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
863 alc_phy_reset_816x(sc);
864 else
865 alc_phy_reset_813x(sc);
866 }
867
868 static void
alc_phy_reset_813x(struct alc_softc * sc)869 alc_phy_reset_813x(struct alc_softc *sc)
870 {
871 uint16_t data;
872
873 /* Reset magic from Linux. */
874 CSR_WRITE_2(sc, ALC_GPHY_CFG, GPHY_CFG_SEL_ANA_RESET);
875 CSR_READ_2(sc, ALC_GPHY_CFG);
876 DELAY(10 * 1000);
877
878 CSR_WRITE_2(sc, ALC_GPHY_CFG, GPHY_CFG_EXT_RESET |
879 GPHY_CFG_SEL_ANA_RESET);
880 CSR_READ_2(sc, ALC_GPHY_CFG);
881 DELAY(10 * 1000);
882
883 /* DSP fixup, Vendor magic. */
884 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B) {
885 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
886 ALC_MII_DBG_ADDR, 0x000A);
887 data = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
888 ALC_MII_DBG_DATA);
889 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
890 ALC_MII_DBG_DATA, data & 0xDFFF);
891 }
892 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151 ||
893 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2 ||
894 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B ||
895 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2) {
896 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
897 ALC_MII_DBG_ADDR, 0x003B);
898 data = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
899 ALC_MII_DBG_DATA);
900 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
901 ALC_MII_DBG_DATA, data & 0xFFF7);
902 DELAY(20 * 1000);
903 }
904 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151) {
905 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
906 ALC_MII_DBG_ADDR, 0x0029);
907 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
908 ALC_MII_DBG_DATA, 0x929D);
909 }
910 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8131 ||
911 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8132 ||
912 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2 ||
913 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2) {
914 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
915 ALC_MII_DBG_ADDR, 0x0029);
916 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
917 ALC_MII_DBG_DATA, 0xB6DD);
918 }
919
920 /* Load DSP codes, vendor magic. */
921 data = ANA_LOOP_SEL_10BT | ANA_EN_MASK_TB | ANA_EN_10BT_IDLE |
922 ((1 << ANA_INTERVAL_SEL_TIMER_SHIFT) & ANA_INTERVAL_SEL_TIMER_MASK);
923 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
924 ALC_MII_DBG_ADDR, MII_ANA_CFG18);
925 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
926 ALC_MII_DBG_DATA, data);
927
928 data = ((2 << ANA_SERDES_CDR_BW_SHIFT) & ANA_SERDES_CDR_BW_MASK) |
929 ANA_SERDES_EN_DEEM | ANA_SERDES_SEL_HSP | ANA_SERDES_EN_PLL |
930 ANA_SERDES_EN_LCKDT;
931 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
932 ALC_MII_DBG_ADDR, MII_ANA_CFG5);
933 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
934 ALC_MII_DBG_DATA, data);
935
936 data = ((44 << ANA_LONG_CABLE_TH_100_SHIFT) &
937 ANA_LONG_CABLE_TH_100_MASK) |
938 ((33 << ANA_SHORT_CABLE_TH_100_SHIFT) &
939 ANA_SHORT_CABLE_TH_100_SHIFT) |
940 ANA_BP_BAD_LINK_ACCUM | ANA_BP_SMALL_BW;
941 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
942 ALC_MII_DBG_ADDR, MII_ANA_CFG54);
943 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
944 ALC_MII_DBG_DATA, data);
945
946 data = ((11 << ANA_IECHO_ADJ_3_SHIFT) & ANA_IECHO_ADJ_3_MASK) |
947 ((11 << ANA_IECHO_ADJ_2_SHIFT) & ANA_IECHO_ADJ_2_MASK) |
948 ((8 << ANA_IECHO_ADJ_1_SHIFT) & ANA_IECHO_ADJ_1_MASK) |
949 ((8 << ANA_IECHO_ADJ_0_SHIFT) & ANA_IECHO_ADJ_0_MASK);
950 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
951 ALC_MII_DBG_ADDR, MII_ANA_CFG4);
952 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
953 ALC_MII_DBG_DATA, data);
954
955 data = ((7 & ANA_MANUL_SWICH_ON_SHIFT) & ANA_MANUL_SWICH_ON_MASK) |
956 ANA_RESTART_CAL | ANA_MAN_ENABLE | ANA_SEL_HSP | ANA_EN_HB |
957 ANA_OEN_125M;
958 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
959 ALC_MII_DBG_ADDR, MII_ANA_CFG0);
960 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
961 ALC_MII_DBG_DATA, data);
962 DELAY(1000);
963
964 /* Disable hibernation. */
965 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_ADDR,
966 0x0029);
967 data = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
968 ALC_MII_DBG_DATA);
969 data &= ~0x8000;
970 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_DATA,
971 data);
972
973 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_ADDR,
974 0x000B);
975 data = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
976 ALC_MII_DBG_DATA);
977 data &= ~0x8000;
978 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_DATA,
979 data);
980 }
981
982 static void
alc_phy_reset_816x(struct alc_softc * sc)983 alc_phy_reset_816x(struct alc_softc *sc)
984 {
985 uint32_t val;
986
987 val = CSR_READ_4(sc, ALC_GPHY_CFG);
988 val &= ~(GPHY_CFG_EXT_RESET | GPHY_CFG_LED_MODE |
989 GPHY_CFG_GATE_25M_ENB | GPHY_CFG_PHY_IDDQ | GPHY_CFG_PHY_PLL_ON |
990 GPHY_CFG_PWDOWN_HW | GPHY_CFG_100AB_ENB);
991 val |= GPHY_CFG_SEL_ANA_RESET;
992 #ifdef notyet
993 val |= GPHY_CFG_HIB_PULSE | GPHY_CFG_HIB_EN | GPHY_CFG_SEL_ANA_RESET;
994 #else
995 /* Disable PHY hibernation. */
996 val &= ~(GPHY_CFG_HIB_PULSE | GPHY_CFG_HIB_EN);
997 #endif
998 CSR_WRITE_4(sc, ALC_GPHY_CFG, val);
999 DELAY(10);
1000 CSR_WRITE_4(sc, ALC_GPHY_CFG, val | GPHY_CFG_EXT_RESET);
1001 DELAY(800);
1002
1003 /* Vendor PHY magic. */
1004 #ifdef notyet
1005 alc_miidbg_writereg(sc, MII_DBG_LEGCYPS, DBG_LEGCYPS_DEFAULT);
1006 alc_miidbg_writereg(sc, MII_DBG_SYSMODCTL, DBG_SYSMODCTL_DEFAULT);
1007 alc_miiext_writereg(sc, MII_EXT_PCS, MII_EXT_VDRVBIAS,
1008 EXT_VDRVBIAS_DEFAULT);
1009 #else
1010 /* Disable PHY hibernation. */
1011 alc_miidbg_writereg(sc, MII_DBG_LEGCYPS,
1012 DBG_LEGCYPS_DEFAULT & ~DBG_LEGCYPS_ENB);
1013 alc_miidbg_writereg(sc, MII_DBG_HIBNEG,
1014 DBG_HIBNEG_DEFAULT & ~(DBG_HIBNEG_PSHIB_EN | DBG_HIBNEG_HIB_PULSE));
1015 alc_miidbg_writereg(sc, MII_DBG_GREENCFG, DBG_GREENCFG_DEFAULT);
1016 #endif
1017
1018 /* XXX Disable EEE. */
1019 val = CSR_READ_4(sc, ALC_LPI_CTL);
1020 val &= ~LPI_CTL_ENB;
1021 CSR_WRITE_4(sc, ALC_LPI_CTL, val);
1022 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_LOCAL_EEEADV, 0);
1023
1024 /* PHY power saving. */
1025 alc_miidbg_writereg(sc, MII_DBG_TST10BTCFG, DBG_TST10BTCFG_DEFAULT);
1026 alc_miidbg_writereg(sc, MII_DBG_SRDSYSMOD, DBG_SRDSYSMOD_DEFAULT);
1027 alc_miidbg_writereg(sc, MII_DBG_TST100BTCFG, DBG_TST100BTCFG_DEFAULT);
1028 alc_miidbg_writereg(sc, MII_DBG_ANACTL, DBG_ANACTL_DEFAULT);
1029 val = alc_miidbg_readreg(sc, MII_DBG_GREENCFG2);
1030 val &= ~DBG_GREENCFG2_GATE_DFSE_EN;
1031 alc_miidbg_writereg(sc, MII_DBG_GREENCFG2, val);
1032
1033 /* RTL8139C, 120m issue. */
1034 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_NLP78,
1035 ANEG_NLP78_120M_DEFAULT);
1036 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_S3DIG10,
1037 ANEG_S3DIG10_DEFAULT);
1038
1039 if ((sc->alc_flags & ALC_FLAG_LINK_WAR) != 0) {
1040 /* Turn off half amplitude. */
1041 val = alc_miiext_readreg(sc, MII_EXT_PCS, MII_EXT_CLDCTL3);
1042 val |= EXT_CLDCTL3_BP_CABLE1TH_DET_GT;
1043 alc_miiext_writereg(sc, MII_EXT_PCS, MII_EXT_CLDCTL3, val);
1044 /* Turn off Green feature. */
1045 val = alc_miidbg_readreg(sc, MII_DBG_GREENCFG2);
1046 val |= DBG_GREENCFG2_BP_GREEN;
1047 alc_miidbg_writereg(sc, MII_DBG_GREENCFG2, val);
1048 /* Turn off half bias. */
1049 val = alc_miiext_readreg(sc, MII_EXT_PCS, MII_EXT_CLDCTL5);
1050 val |= EXT_CLDCTL5_BP_VD_HLFBIAS;
1051 alc_miiext_writereg(sc, MII_EXT_PCS, MII_EXT_CLDCTL5, val);
1052 }
1053 }
1054
1055 static void
alc_phy_down(struct alc_softc * sc)1056 alc_phy_down(struct alc_softc *sc)
1057 {
1058 uint32_t gphy;
1059
1060 switch (sc->alc_ident->deviceid) {
1061 case DEVICEID_ATHEROS_AR8161:
1062 case DEVICEID_ATHEROS_E2200:
1063 case DEVICEID_ATHEROS_E2400:
1064 case DEVICEID_ATHEROS_E2500:
1065 case DEVICEID_ATHEROS_AR8162:
1066 case DEVICEID_ATHEROS_AR8171:
1067 case DEVICEID_ATHEROS_AR8172:
1068 gphy = CSR_READ_4(sc, ALC_GPHY_CFG);
1069 gphy &= ~(GPHY_CFG_EXT_RESET | GPHY_CFG_LED_MODE |
1070 GPHY_CFG_100AB_ENB | GPHY_CFG_PHY_PLL_ON);
1071 gphy |= GPHY_CFG_HIB_EN | GPHY_CFG_HIB_PULSE |
1072 GPHY_CFG_SEL_ANA_RESET;
1073 gphy |= GPHY_CFG_PHY_IDDQ | GPHY_CFG_PWDOWN_HW;
1074 CSR_WRITE_4(sc, ALC_GPHY_CFG, gphy);
1075 break;
1076 case DEVICEID_ATHEROS_AR8151:
1077 case DEVICEID_ATHEROS_AR8151_V2:
1078 case DEVICEID_ATHEROS_AR8152_B:
1079 case DEVICEID_ATHEROS_AR8152_B2:
1080 /*
1081 * GPHY power down caused more problems on AR8151 v2.0.
1082 * When driver is reloaded after GPHY power down,
1083 * accesses to PHY/MAC registers hung the system. Only
1084 * cold boot recovered from it. I'm not sure whether
1085 * AR8151 v1.0 also requires this one though. I don't
1086 * have AR8151 v1.0 controller in hand.
1087 * The only option left is to isolate the PHY and
1088 * initiates power down the PHY which in turn saves
1089 * more power when driver is unloaded.
1090 */
1091 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
1092 MII_BMCR, BMCR_ISO | BMCR_PDOWN);
1093 break;
1094 default:
1095 /* Force PHY down. */
1096 CSR_WRITE_2(sc, ALC_GPHY_CFG, GPHY_CFG_EXT_RESET |
1097 GPHY_CFG_SEL_ANA_RESET | GPHY_CFG_PHY_IDDQ |
1098 GPHY_CFG_PWDOWN_HW);
1099 DELAY(1000);
1100 break;
1101 }
1102 }
1103
1104 static void
alc_aspm(struct alc_softc * sc,int init,int media)1105 alc_aspm(struct alc_softc *sc, int init, int media)
1106 {
1107
1108 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
1109 alc_aspm_816x(sc, init);
1110 else
1111 alc_aspm_813x(sc, media);
1112 }
1113
1114 static void
alc_aspm_813x(struct alc_softc * sc,int media)1115 alc_aspm_813x(struct alc_softc *sc, int media)
1116 {
1117 uint32_t pmcfg;
1118 uint16_t linkcfg;
1119
1120 if ((sc->alc_flags & ALC_FLAG_LINK) == 0)
1121 return;
1122
1123 pmcfg = CSR_READ_4(sc, ALC_PM_CFG);
1124 if ((sc->alc_flags & (ALC_FLAG_APS | ALC_FLAG_PCIE)) ==
1125 (ALC_FLAG_APS | ALC_FLAG_PCIE))
1126 linkcfg = CSR_READ_2(sc, sc->alc_expcap +
1127 PCIR_EXPRESS_LINK_CTL);
1128 else
1129 linkcfg = 0;
1130 pmcfg &= ~PM_CFG_SERDES_PD_EX_L1;
1131 pmcfg &= ~(PM_CFG_L1_ENTRY_TIMER_MASK | PM_CFG_LCKDET_TIMER_MASK);
1132 pmcfg |= PM_CFG_MAC_ASPM_CHK;
1133 pmcfg |= (PM_CFG_LCKDET_TIMER_DEFAULT << PM_CFG_LCKDET_TIMER_SHIFT);
1134 pmcfg &= ~(PM_CFG_ASPM_L1_ENB | PM_CFG_ASPM_L0S_ENB);
1135
1136 if ((sc->alc_flags & ALC_FLAG_APS) != 0) {
1137 /* Disable extended sync except AR8152 B v1.0 */
1138 linkcfg &= ~PCIEM_LINK_CTL_EXTENDED_SYNC;
1139 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B &&
1140 sc->alc_rev == ATHEROS_AR8152_B_V10)
1141 linkcfg |= PCIEM_LINK_CTL_EXTENDED_SYNC;
1142 CSR_WRITE_2(sc, sc->alc_expcap + PCIER_LINK_CTL,
1143 linkcfg);
1144 pmcfg &= ~(PM_CFG_EN_BUFS_RX_L0S | PM_CFG_SA_DLY_ENB |
1145 PM_CFG_HOTRST);
1146 pmcfg |= (PM_CFG_L1_ENTRY_TIMER_DEFAULT <<
1147 PM_CFG_L1_ENTRY_TIMER_SHIFT);
1148 pmcfg &= ~PM_CFG_PM_REQ_TIMER_MASK;
1149 pmcfg |= (PM_CFG_PM_REQ_TIMER_DEFAULT <<
1150 PM_CFG_PM_REQ_TIMER_SHIFT);
1151 pmcfg |= PM_CFG_SERDES_PD_EX_L1 | PM_CFG_PCIE_RECV;
1152 }
1153
1154 if ((sc->alc_flags & ALC_FLAG_LINK) != 0) {
1155 if ((sc->alc_flags & ALC_FLAG_L0S) != 0)
1156 pmcfg |= PM_CFG_ASPM_L0S_ENB;
1157 if ((sc->alc_flags & ALC_FLAG_L1S) != 0)
1158 pmcfg |= PM_CFG_ASPM_L1_ENB;
1159 if ((sc->alc_flags & ALC_FLAG_APS) != 0) {
1160 if (sc->alc_ident->deviceid ==
1161 DEVICEID_ATHEROS_AR8152_B)
1162 pmcfg &= ~PM_CFG_ASPM_L0S_ENB;
1163 pmcfg &= ~(PM_CFG_SERDES_L1_ENB |
1164 PM_CFG_SERDES_PLL_L1_ENB |
1165 PM_CFG_SERDES_BUDS_RX_L1_ENB);
1166 pmcfg |= PM_CFG_CLK_SWH_L1;
1167 if (media == IFM_100_TX || media == IFM_1000_T) {
1168 pmcfg &= ~PM_CFG_L1_ENTRY_TIMER_MASK;
1169 switch (sc->alc_ident->deviceid) {
1170 case DEVICEID_ATHEROS_AR8152_B:
1171 pmcfg |= (7 <<
1172 PM_CFG_L1_ENTRY_TIMER_SHIFT);
1173 break;
1174 case DEVICEID_ATHEROS_AR8152_B2:
1175 case DEVICEID_ATHEROS_AR8151_V2:
1176 pmcfg |= (4 <<
1177 PM_CFG_L1_ENTRY_TIMER_SHIFT);
1178 break;
1179 default:
1180 pmcfg |= (15 <<
1181 PM_CFG_L1_ENTRY_TIMER_SHIFT);
1182 break;
1183 }
1184 }
1185 } else {
1186 pmcfg |= PM_CFG_SERDES_L1_ENB |
1187 PM_CFG_SERDES_PLL_L1_ENB |
1188 PM_CFG_SERDES_BUDS_RX_L1_ENB;
1189 pmcfg &= ~(PM_CFG_CLK_SWH_L1 |
1190 PM_CFG_ASPM_L1_ENB | PM_CFG_ASPM_L0S_ENB);
1191 }
1192 } else {
1193 pmcfg &= ~(PM_CFG_SERDES_BUDS_RX_L1_ENB | PM_CFG_SERDES_L1_ENB |
1194 PM_CFG_SERDES_PLL_L1_ENB);
1195 pmcfg |= PM_CFG_CLK_SWH_L1;
1196 if ((sc->alc_flags & ALC_FLAG_L1S) != 0)
1197 pmcfg |= PM_CFG_ASPM_L1_ENB;
1198 }
1199 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg);
1200 }
1201
1202 static void
alc_aspm_816x(struct alc_softc * sc,int init)1203 alc_aspm_816x(struct alc_softc *sc, int init)
1204 {
1205 uint32_t pmcfg;
1206
1207 pmcfg = CSR_READ_4(sc, ALC_PM_CFG);
1208 pmcfg &= ~PM_CFG_L1_ENTRY_TIMER_816X_MASK;
1209 pmcfg |= PM_CFG_L1_ENTRY_TIMER_816X_DEFAULT;
1210 pmcfg &= ~PM_CFG_PM_REQ_TIMER_MASK;
1211 pmcfg |= PM_CFG_PM_REQ_TIMER_816X_DEFAULT;
1212 pmcfg &= ~PM_CFG_LCKDET_TIMER_MASK;
1213 pmcfg |= PM_CFG_LCKDET_TIMER_DEFAULT;
1214 pmcfg |= PM_CFG_SERDES_PD_EX_L1 | PM_CFG_CLK_SWH_L1 | PM_CFG_PCIE_RECV;
1215 pmcfg &= ~(PM_CFG_RX_L1_AFTER_L0S | PM_CFG_TX_L1_AFTER_L0S |
1216 PM_CFG_ASPM_L1_ENB | PM_CFG_ASPM_L0S_ENB |
1217 PM_CFG_SERDES_L1_ENB | PM_CFG_SERDES_PLL_L1_ENB |
1218 PM_CFG_SERDES_BUDS_RX_L1_ENB | PM_CFG_SA_DLY_ENB |
1219 PM_CFG_MAC_ASPM_CHK | PM_CFG_HOTRST);
1220 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1 &&
1221 (sc->alc_rev & 0x01) != 0)
1222 pmcfg |= PM_CFG_SERDES_L1_ENB | PM_CFG_SERDES_PLL_L1_ENB;
1223 if ((sc->alc_flags & ALC_FLAG_LINK) != 0) {
1224 /* Link up, enable both L0s, L1s. */
1225 pmcfg |= PM_CFG_ASPM_L0S_ENB | PM_CFG_ASPM_L1_ENB |
1226 PM_CFG_MAC_ASPM_CHK;
1227 } else {
1228 if (init != 0)
1229 pmcfg |= PM_CFG_ASPM_L0S_ENB | PM_CFG_ASPM_L1_ENB |
1230 PM_CFG_MAC_ASPM_CHK;
1231 else if ((sc->alc_ifp->if_flags & IFF_RUNNING) != 0)
1232 pmcfg |= PM_CFG_ASPM_L1_ENB | PM_CFG_MAC_ASPM_CHK;
1233 }
1234 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg);
1235 }
1236
1237 static void
alc_init_pcie(struct alc_softc * sc)1238 alc_init_pcie(struct alc_softc *sc)
1239 {
1240 const char *aspm_state[] = { "L0s/L1", "L0s", "L1", "L0s/L1" };
1241 uint32_t cap, ctl, val;
1242 int state;
1243
1244 /* Clear data link and flow-control protocol error. */
1245 val = CSR_READ_4(sc, ALC_PEX_UNC_ERR_SEV);
1246 val &= ~(PEX_UNC_ERR_SEV_DLP | PEX_UNC_ERR_SEV_FCP);
1247 CSR_WRITE_4(sc, ALC_PEX_UNC_ERR_SEV, val);
1248
1249 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
1250 CSR_WRITE_4(sc, ALC_LTSSM_ID_CFG,
1251 CSR_READ_4(sc, ALC_LTSSM_ID_CFG) & ~LTSSM_ID_WRO_ENB);
1252 CSR_WRITE_4(sc, ALC_PCIE_PHYMISC,
1253 CSR_READ_4(sc, ALC_PCIE_PHYMISC) |
1254 PCIE_PHYMISC_FORCE_RCV_DET);
1255 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B &&
1256 sc->alc_rev == ATHEROS_AR8152_B_V10) {
1257 val = CSR_READ_4(sc, ALC_PCIE_PHYMISC2);
1258 val &= ~(PCIE_PHYMISC2_SERDES_CDR_MASK |
1259 PCIE_PHYMISC2_SERDES_TH_MASK);
1260 val |= 3 << PCIE_PHYMISC2_SERDES_CDR_SHIFT;
1261 val |= 3 << PCIE_PHYMISC2_SERDES_TH_SHIFT;
1262 CSR_WRITE_4(sc, ALC_PCIE_PHYMISC2, val);
1263 }
1264 /* Disable ASPM L0S and L1. */
1265 cap = CSR_READ_2(sc, sc->alc_expcap + PCIER_LINK_CAP);
1266 if ((cap & PCIEM_LINK_CAP_ASPM) != 0) {
1267 ctl = CSR_READ_2(sc, sc->alc_expcap + PCIER_LINK_CTL);
1268 if ((ctl & PCIEM_LINK_CTL_RCB) != 0)
1269 sc->alc_rcb = DMA_CFG_RCB_128;
1270 if (bootverbose)
1271 device_printf(sc->alc_dev, "RCB %u bytes\n",
1272 sc->alc_rcb == DMA_CFG_RCB_64 ? 64 : 128);
1273 state = ctl & PCIEM_LINK_CTL_ASPMC;
1274 if (state & PCIEM_LINK_CTL_ASPMC_L0S)
1275 sc->alc_flags |= ALC_FLAG_L0S;
1276 if (state & PCIEM_LINK_CTL_ASPMC_L1)
1277 sc->alc_flags |= ALC_FLAG_L1S;
1278 if (bootverbose)
1279 device_printf(sc->alc_dev, "ASPM %s %s\n",
1280 aspm_state[state],
1281 state == 0 ? "disabled" : "enabled");
1282 alc_disable_l0s_l1(sc);
1283 } else {
1284 if (bootverbose)
1285 device_printf(sc->alc_dev,
1286 "no ASPM support\n");
1287 }
1288 } else {
1289 val = CSR_READ_4(sc, ALC_PDLL_TRNS1);
1290 val &= ~PDLL_TRNS1_D3PLLOFF_ENB;
1291 CSR_WRITE_4(sc, ALC_PDLL_TRNS1, val);
1292 val = CSR_READ_4(sc, ALC_MASTER_CFG);
1293 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1 &&
1294 (sc->alc_rev & 0x01) != 0) {
1295 if ((val & MASTER_WAKEN_25M) == 0 ||
1296 (val & MASTER_CLK_SEL_DIS) == 0) {
1297 val |= MASTER_WAKEN_25M | MASTER_CLK_SEL_DIS;
1298 CSR_WRITE_4(sc, ALC_MASTER_CFG, val);
1299 }
1300 } else {
1301 if ((val & MASTER_WAKEN_25M) == 0 ||
1302 (val & MASTER_CLK_SEL_DIS) != 0) {
1303 val |= MASTER_WAKEN_25M;
1304 val &= ~MASTER_CLK_SEL_DIS;
1305 CSR_WRITE_4(sc, ALC_MASTER_CFG, val);
1306 }
1307 }
1308 }
1309 alc_aspm(sc, 1, IFM_UNKNOWN);
1310 }
1311
1312 static void
alc_config_msi(struct alc_softc * sc)1313 alc_config_msi(struct alc_softc *sc)
1314 {
1315 uint32_t ctl, mod;
1316
1317 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
1318 /*
1319 * It seems interrupt moderation is controlled by
1320 * ALC_MSI_RETRANS_TIMER register if MSI/MSIX is active.
1321 * Driver uses RX interrupt moderation parameter to
1322 * program ALC_MSI_RETRANS_TIMER register.
1323 */
1324 ctl = CSR_READ_4(sc, ALC_MSI_RETRANS_TIMER);
1325 ctl &= ~MSI_RETRANS_TIMER_MASK;
1326 ctl &= ~MSI_RETRANS_MASK_SEL_LINE;
1327 mod = ALC_USECS(sc->alc_int_rx_mod);
1328 if (mod == 0)
1329 mod = 1;
1330 ctl |= mod;
1331 if (sc->alc_irq_type == PCI_INTR_TYPE_MSI)
1332 CSR_WRITE_4(sc, ALC_MSI_RETRANS_TIMER, ctl |
1333 MSI_RETRANS_MASK_SEL_LINE);
1334 else
1335 CSR_WRITE_4(sc, ALC_MSI_RETRANS_TIMER, 0);
1336 }
1337 }
1338
1339 static int
alc_attach(device_t dev)1340 alc_attach(device_t dev)
1341 {
1342 struct alc_softc *sc;
1343 struct ifnet *ifp;
1344 uint16_t burst;
1345 int base, error;
1346 u_int intr_flags;
1347
1348 error = 0;
1349 sc = device_get_softc(dev);
1350 sc->alc_dev = dev;
1351 sc->alc_rev = pci_get_revid(dev);
1352
1353 callout_init_mp(&sc->alc_tick_ch);
1354 sc->alc_ident = alc_find_ident(dev);
1355
1356 /* Enable bus mastering */
1357 pci_enable_busmaster(dev);
1358
1359 /* Map the device. */
1360 sc->alc_res_rid = PCIR_BAR(0);
1361 sc->alc_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
1362 &sc->alc_res_rid, RF_ACTIVE);
1363 if (error != 0) {
1364 device_printf(dev, "cannot allocate memory resources.\n");
1365 goto fail;
1366 }
1367 sc->alc_res_btag = rman_get_bustag(sc->alc_res);
1368 sc->alc_res_bhand = rman_get_bushandle(sc->alc_res);
1369
1370 /* Set PHY address. */
1371 sc->alc_phyaddr = ALC_PHY_ADDR;
1372
1373 /*
1374 * One odd thing is AR8132 uses the same PHY hardware(F1
1375 * gigabit PHY) of AR8131. So atphy(4) of AR8132 reports
1376 * the PHY supports 1000Mbps but that's not true. The PHY
1377 * used in AR8132 can't establish gigabit link even if it
1378 * shows the same PHY model/revision number of AR8131.
1379 */
1380 switch (sc->alc_ident->deviceid) {
1381 case DEVICEID_ATHEROS_E2200:
1382 case DEVICEID_ATHEROS_E2400:
1383 case DEVICEID_ATHEROS_E2500:
1384 sc->alc_flags |= ALC_FLAG_E2X00;
1385 /* FALLTHROUGH */
1386 case DEVICEID_ATHEROS_AR8161:
1387 if (pci_get_subvendor(dev) == VENDORID_ATHEROS &&
1388 pci_get_subdevice(dev) == 0x0091 && sc->alc_rev == 0)
1389 sc->alc_flags |= ALC_FLAG_LINK_WAR;
1390 /* FALLTHROUGH */
1391 case DEVICEID_ATHEROS_AR8171:
1392 sc->alc_flags |= ALC_FLAG_AR816X_FAMILY;
1393 break;
1394 case DEVICEID_ATHEROS_AR8162:
1395 case DEVICEID_ATHEROS_AR8172:
1396 sc->alc_flags |= ALC_FLAG_FASTETHER | ALC_FLAG_AR816X_FAMILY;
1397 break;
1398 case DEVICEID_ATHEROS_AR8152_B:
1399 case DEVICEID_ATHEROS_AR8152_B2:
1400 sc->alc_flags |= ALC_FLAG_APS;
1401 /* FALLTHROUGH */
1402 case DEVICEID_ATHEROS_AR8132:
1403 sc->alc_flags |= ALC_FLAG_FASTETHER;
1404 break;
1405 case DEVICEID_ATHEROS_AR8151:
1406 case DEVICEID_ATHEROS_AR8151_V2:
1407 sc->alc_flags |= ALC_FLAG_APS;
1408 /* FALLTHROUGH */
1409 default:
1410 break;
1411 }
1412 sc->alc_flags |= ALC_FLAG_JUMBO;
1413
1414 /*
1415 * It seems that AR813x/AR815x has silicon bug for SMB. In
1416 * addition, Atheros said that enabling SMB wouldn't improve
1417 * performance. However I think it's bad to access lots of
1418 * registers to extract MAC statistics.
1419 */
1420 sc->alc_flags |= ALC_FLAG_SMB_BUG;
1421
1422 /*
1423 * Don't use Tx CMB. It is known to have silicon bug.
1424 */
1425 sc->alc_flags |= ALC_FLAG_CMB_BUG;
1426 sc->alc_chip_rev = CSR_READ_4(sc, ALC_MASTER_CFG) >>
1427 MASTER_CHIP_REV_SHIFT;
1428 if (bootverbose) {
1429 device_printf(dev, "PCI device revision : 0x%04x\n",
1430 sc->alc_rev);
1431 device_printf(dev, "Chip id/revision : 0x%04x\n",
1432 sc->alc_chip_rev);
1433 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
1434 device_printf(dev, "AR816x revision : 0x%x\n",
1435 AR816X_REV(sc->alc_rev));
1436 }
1437 device_printf(dev, "%u Tx FIFO, %u Rx FIFO\n",
1438 CSR_READ_4(sc, ALC_SRAM_TX_FIFO_LEN) * 8,
1439 CSR_READ_4(sc, ALC_SRAM_RX_FIFO_LEN) * 8);
1440
1441 /* Initialize DMA parameters. */
1442 sc->alc_dma_rd_burst = 0;
1443 sc->alc_dma_wr_burst = 0;
1444 sc->alc_rcb = DMA_CFG_RCB_64;
1445 if (pci_find_extcap(dev, PCIY_EXPRESS, &base) == 0) {
1446 sc->alc_flags |= ALC_FLAG_PCIE;
1447 sc->alc_expcap = base;
1448 burst = CSR_READ_2(sc, base + PCIER_DEVICE_CTL);
1449 sc->alc_dma_rd_burst =
1450 (burst & PCIEM_CTL_MAX_READ_REQUEST) >> 12;
1451 sc->alc_dma_wr_burst = (burst & PCIEM_CTL_MAX_PAYLOAD) >> 5;
1452 if (bootverbose) {
1453 device_printf(dev, "Read request size : %u bytes.\n",
1454 alc_dma_burst[sc->alc_dma_rd_burst]);
1455 device_printf(dev, "TLP payload size : %u bytes.\n",
1456 alc_dma_burst[sc->alc_dma_wr_burst]);
1457 }
1458 if (alc_dma_burst[sc->alc_dma_rd_burst] > 1024)
1459 sc->alc_dma_rd_burst = 3;
1460 if (alc_dma_burst[sc->alc_dma_wr_burst] > 1024)
1461 sc->alc_dma_wr_burst = 3;
1462 /*
1463 * Force maximum payload size to 128 bytes for E2200/E2400.
1464 * Otherwise it triggers DMA write error.
1465 */
1466 if ((sc->alc_flags & ALC_FLAG_E2X00) != 0)
1467 sc->alc_dma_wr_burst = 0;
1468 alc_init_pcie(sc);
1469 }
1470
1471 /* Reset PHY. */
1472 alc_phy_reset(sc);
1473
1474 /* Reset the ethernet controller. */
1475 alc_stop_mac(sc);
1476 alc_reset(sc);
1477
1478 sc->alc_irq_type = pci_alloc_1intr(dev, alc_msi_enable,
1479 &sc->alc_irq_rid, &intr_flags);
1480
1481 /* Allocate IRQ resources. */
1482 sc->alc_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ,
1483 &sc->alc_irq_rid, intr_flags);
1484 if (error != 0) {
1485 device_printf(dev, "cannot allocate IRQ resources.\n");
1486 goto fail;
1487 }
1488
1489 /* Create device sysctl node. */
1490 alc_sysctl_node(sc);
1491
1492 if ((error = alc_dma_alloc(sc)) != 0)
1493 goto fail;
1494
1495 /* Load station address. */
1496 alc_get_macaddr(sc);
1497
1498 ifp = sc->alc_ifp = &sc->arpcom.ac_if;
1499 ifp->if_softc = sc;
1500 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
1501 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
1502 ifp->if_ioctl = alc_ioctl;
1503 ifp->if_start = alc_start;
1504 ifp->if_init = alc_init;
1505 ifq_set_maxlen(&ifp->if_snd, ALC_TX_RING_CNT - 1);
1506 ifq_set_ready(&ifp->if_snd);
1507 ifp->if_capabilities = IFCAP_TXCSUM;
1508 ifp->if_hwassist = ALC_CSUM_FEATURES;
1509 #if 0
1510 /* XXX: WOL */
1511 if (pci_find_extcap(dev, PCIY_PMG, &pmc) == 0) {
1512 ifp->if_capabilities |= IFCAP_WOL_MAGIC | IFCAP_WOL_MCAST;
1513 sc->alc_flags |= ALC_FLAG_PM;
1514 sc->alc_pmcap = base;
1515 }
1516 #endif
1517 ifp->if_capenable = ifp->if_capabilities;
1518
1519 /* VLAN capability setup. */
1520 ifp->if_capabilities |= IFCAP_VLAN_MTU;
1521 ifp->if_capabilities |= IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_HWCSUM;
1522 ifp->if_capenable = ifp->if_capabilities;
1523
1524 /*
1525 * XXX
1526 * It seems enabling Tx checksum offloading makes more trouble.
1527 * Sometimes the controller does not receive any frames when
1528 * Tx checksum offloading is enabled. I'm not sure whether this
1529 * is a bug in Tx checksum offloading logic or I got broken
1530 * sample boards. To safety, don't enable Tx checksum offloading
1531 * by default but give chance to users to toggle it if they know
1532 * their controllers work without problems.
1533 * Fortunately, Tx checksum offloading for AR816x family
1534 * seems to work.
1535 */
1536 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
1537 ifp->if_capenable &= ~IFCAP_TXCSUM;
1538 ifp->if_hwassist &= ~ALC_CSUM_FEATURES;
1539 }
1540
1541 /* Set up MII bus. */
1542 if ((error = mii_phy_probe(dev, &sc->alc_miibus, alc_mediachange,
1543 alc_mediastatus)) != 0) {
1544 device_printf(dev, "no PHY found!\n");
1545 goto fail;
1546 }
1547
1548 ether_ifattach(ifp, sc->alc_eaddr, NULL);
1549
1550 /* Tell the upper layer(s) we support long frames. */
1551 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
1552
1553 ifq_set_cpuid(&ifp->if_snd, rman_get_cpuid(sc->alc_irq));
1554 #if 0
1555 /* Create local taskq. */
1556 TASK_INIT(&sc->alc_tx_task, 1, alc_tx_task, ifp);
1557 sc->alc_tq = taskqueue_create("alc_taskq", M_WAITOK,
1558 taskqueue_thread_enqueue, &sc->alc_tq);
1559 if (sc->alc_tq == NULL) {
1560 device_printf(dev, "could not create taskqueue.\n");
1561 ether_ifdetach(ifp);
1562 error = ENXIO;
1563 goto fail;
1564 }
1565 taskqueue_start_threads(&sc->alc_tq, 1, TDPRI_KERN_DAEMON, -1, "%s taskq",
1566 device_get_nameunit(sc->alc_dev));
1567
1568 alc_config_msi(sc);
1569 if ((sc->alc_flags & ALC_FLAG_MSIX) != 0)
1570 msic = ALC_MSIX_MESSAGES;
1571 else if ((sc->alc_flags & ALC_FLAG_MSI) != 0)
1572 msic = ALC_MSI_MESSAGES;
1573 else
1574 msic = 1;
1575 for (i = 0; i < msic; i++) {
1576 error = bus_setup_intr(dev, sc->alc_irq[i], INTR_MPSAFE,
1577 alc_intr, sc,
1578 &sc->alc_intrhand[i], NULL);
1579 if (error != 0)
1580 break;
1581 }
1582 if (error != 0) {
1583 device_printf(dev, "could not set up interrupt handler.\n");
1584 taskqueue_free(sc->alc_tq);
1585 sc->alc_tq = NULL;
1586 ether_ifdetach(ifp);
1587 goto fail;
1588 }
1589 #else
1590 alc_config_msi(sc);
1591 error = bus_setup_intr(dev, sc->alc_irq, INTR_MPSAFE, alc_intr, sc,
1592 &sc->alc_intrhand, ifp->if_serializer);
1593 if (error) {
1594 device_printf(dev, "could not set up interrupt handler.\n");
1595 ether_ifdetach(ifp);
1596 goto fail;
1597 }
1598 #endif
1599
1600 fail:
1601 if (error != 0)
1602 alc_detach(dev);
1603
1604 return (error);
1605 }
1606
1607 static int
alc_detach(device_t dev)1608 alc_detach(device_t dev)
1609 {
1610 struct alc_softc *sc = device_get_softc(dev);
1611
1612 if (device_is_attached(dev)) {
1613 struct ifnet *ifp = sc->alc_ifp;
1614
1615 lwkt_serialize_enter(ifp->if_serializer);
1616 alc_stop(sc);
1617 bus_teardown_intr(dev, sc->alc_irq, sc->alc_intrhand);
1618 lwkt_serialize_exit(ifp->if_serializer);
1619
1620 ether_ifdetach(ifp);
1621 }
1622
1623 if (sc->alc_miibus != NULL)
1624 device_delete_child(dev, sc->alc_miibus);
1625 bus_generic_detach(dev);
1626
1627 if (sc->alc_res != NULL)
1628 alc_phy_down(sc);
1629
1630 if (sc->alc_irq != NULL) {
1631 bus_release_resource(dev, SYS_RES_IRQ, sc->alc_irq_rid,
1632 sc->alc_irq);
1633 }
1634 if (sc->alc_irq_type == PCI_INTR_TYPE_MSI)
1635 pci_release_msi(dev);
1636
1637 if (sc->alc_res != NULL) {
1638 bus_release_resource(dev, SYS_RES_MEMORY, sc->alc_res_rid,
1639 sc->alc_res);
1640 }
1641
1642 alc_dma_free(sc);
1643
1644 return (0);
1645 }
1646
1647 #define ALC_SYSCTL_STAT_ADD32(c, h, n, p, d) \
1648 SYSCTL_ADD_UINT(c, h, OID_AUTO, n, CTLFLAG_RD, p, 0, d)
1649 #define ALC_SYSCTL_STAT_ADD64(c, h, n, p, d) \
1650 SYSCTL_ADD_QUAD(c, h, OID_AUTO, n, CTLFLAG_RD, p, 0, d)
1651
1652 static void
alc_sysctl_node(struct alc_softc * sc)1653 alc_sysctl_node(struct alc_softc *sc)
1654 {
1655 struct sysctl_ctx_list *ctx;
1656 struct sysctl_oid *tree;
1657 struct sysctl_oid_list *child, *parent;
1658 struct alc_hw_stats *stats;
1659 int error;
1660
1661 stats = &sc->alc_stats;
1662 ctx = device_get_sysctl_ctx(sc->alc_dev);
1663 child = SYSCTL_CHILDREN(device_get_sysctl_tree(sc->alc_dev));
1664
1665 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "int_rx_mod",
1666 CTLTYPE_INT | CTLFLAG_RW, &sc->alc_int_rx_mod, 0,
1667 sysctl_hw_alc_int_mod, "I", "alc Rx interrupt moderation");
1668 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "int_tx_mod",
1669 CTLTYPE_INT | CTLFLAG_RW, &sc->alc_int_tx_mod, 0,
1670 sysctl_hw_alc_int_mod, "I", "alc Tx interrupt moderation");
1671 /* Pull in device tunables. */
1672 sc->alc_int_rx_mod = ALC_IM_RX_TIMER_DEFAULT;
1673 error = resource_int_value(device_get_name(sc->alc_dev),
1674 device_get_unit(sc->alc_dev), "int_rx_mod", &sc->alc_int_rx_mod);
1675 if (error == 0) {
1676 if (sc->alc_int_rx_mod < ALC_IM_TIMER_MIN ||
1677 sc->alc_int_rx_mod > ALC_IM_TIMER_MAX) {
1678 device_printf(sc->alc_dev, "int_rx_mod value out of "
1679 "range; using default: %d\n",
1680 ALC_IM_RX_TIMER_DEFAULT);
1681 sc->alc_int_rx_mod = ALC_IM_RX_TIMER_DEFAULT;
1682 }
1683 }
1684 sc->alc_int_tx_mod = ALC_IM_TX_TIMER_DEFAULT;
1685 error = resource_int_value(device_get_name(sc->alc_dev),
1686 device_get_unit(sc->alc_dev), "int_tx_mod", &sc->alc_int_tx_mod);
1687 if (error == 0) {
1688 if (sc->alc_int_tx_mod < ALC_IM_TIMER_MIN ||
1689 sc->alc_int_tx_mod > ALC_IM_TIMER_MAX) {
1690 device_printf(sc->alc_dev, "int_tx_mod value out of "
1691 "range; using default: %d\n",
1692 ALC_IM_TX_TIMER_DEFAULT);
1693 sc->alc_int_tx_mod = ALC_IM_TX_TIMER_DEFAULT;
1694 }
1695 }
1696 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "process_limit",
1697 CTLTYPE_INT | CTLFLAG_RW, &sc->alc_process_limit, 0,
1698 sysctl_hw_alc_proc_limit, "I",
1699 "max number of Rx events to process");
1700 /* Pull in device tunables. */
1701 sc->alc_process_limit = ALC_PROC_DEFAULT;
1702 error = resource_int_value(device_get_name(sc->alc_dev),
1703 device_get_unit(sc->alc_dev), "process_limit",
1704 &sc->alc_process_limit);
1705 if (error == 0) {
1706 if (sc->alc_process_limit < ALC_PROC_MIN ||
1707 sc->alc_process_limit > ALC_PROC_MAX) {
1708 device_printf(sc->alc_dev,
1709 "process_limit value out of range; "
1710 "using default: %d\n", ALC_PROC_DEFAULT);
1711 sc->alc_process_limit = ALC_PROC_DEFAULT;
1712 }
1713 }
1714
1715 tree = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "stats", CTLFLAG_RD,
1716 NULL, "ALC statistics");
1717 parent = SYSCTL_CHILDREN(tree);
1718
1719 /* Rx statistics. */
1720 tree = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "rx", CTLFLAG_RD,
1721 NULL, "Rx MAC statistics");
1722 child = SYSCTL_CHILDREN(tree);
1723 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_frames",
1724 &stats->rx_frames, "Good frames");
1725 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_bcast_frames",
1726 &stats->rx_bcast_frames, "Good broadcast frames");
1727 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_mcast_frames",
1728 &stats->rx_mcast_frames, "Good multicast frames");
1729 ALC_SYSCTL_STAT_ADD32(ctx, child, "pause_frames",
1730 &stats->rx_pause_frames, "Pause control frames");
1731 ALC_SYSCTL_STAT_ADD32(ctx, child, "control_frames",
1732 &stats->rx_control_frames, "Control frames");
1733 ALC_SYSCTL_STAT_ADD32(ctx, child, "crc_errs",
1734 &stats->rx_crcerrs, "CRC errors");
1735 ALC_SYSCTL_STAT_ADD32(ctx, child, "len_errs",
1736 &stats->rx_lenerrs, "Frames with length mismatched");
1737 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_octets",
1738 &stats->rx_bytes, "Good octets");
1739 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_bcast_octets",
1740 &stats->rx_bcast_bytes, "Good broadcast octets");
1741 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_mcast_octets",
1742 &stats->rx_mcast_bytes, "Good multicast octets");
1743 ALC_SYSCTL_STAT_ADD32(ctx, child, "runts",
1744 &stats->rx_runts, "Too short frames");
1745 ALC_SYSCTL_STAT_ADD32(ctx, child, "fragments",
1746 &stats->rx_fragments, "Fragmented frames");
1747 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_64",
1748 &stats->rx_pkts_64, "64 bytes frames");
1749 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_65_127",
1750 &stats->rx_pkts_65_127, "65 to 127 bytes frames");
1751 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_128_255",
1752 &stats->rx_pkts_128_255, "128 to 255 bytes frames");
1753 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_256_511",
1754 &stats->rx_pkts_256_511, "256 to 511 bytes frames");
1755 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_512_1023",
1756 &stats->rx_pkts_512_1023, "512 to 1023 bytes frames");
1757 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_1024_1518",
1758 &stats->rx_pkts_1024_1518, "1024 to 1518 bytes frames");
1759 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_1519_max",
1760 &stats->rx_pkts_1519_max, "1519 to max frames");
1761 ALC_SYSCTL_STAT_ADD32(ctx, child, "trunc_errs",
1762 &stats->rx_pkts_truncated, "Truncated frames due to MTU size");
1763 ALC_SYSCTL_STAT_ADD32(ctx, child, "fifo_oflows",
1764 &stats->rx_fifo_oflows, "FIFO overflows");
1765 ALC_SYSCTL_STAT_ADD32(ctx, child, "rrs_errs",
1766 &stats->rx_rrs_errs, "Return status write-back errors");
1767 ALC_SYSCTL_STAT_ADD32(ctx, child, "align_errs",
1768 &stats->rx_alignerrs, "Alignment errors");
1769 ALC_SYSCTL_STAT_ADD32(ctx, child, "filtered",
1770 &stats->rx_pkts_filtered,
1771 "Frames dropped due to address filtering");
1772
1773 /* Tx statistics. */
1774 tree = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "tx", CTLFLAG_RD,
1775 NULL, "Tx MAC statistics");
1776 child = SYSCTL_CHILDREN(tree);
1777 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_frames",
1778 &stats->tx_frames, "Good frames");
1779 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_bcast_frames",
1780 &stats->tx_bcast_frames, "Good broadcast frames");
1781 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_mcast_frames",
1782 &stats->tx_mcast_frames, "Good multicast frames");
1783 ALC_SYSCTL_STAT_ADD32(ctx, child, "pause_frames",
1784 &stats->tx_pause_frames, "Pause control frames");
1785 ALC_SYSCTL_STAT_ADD32(ctx, child, "control_frames",
1786 &stats->tx_control_frames, "Control frames");
1787 ALC_SYSCTL_STAT_ADD32(ctx, child, "excess_defers",
1788 &stats->tx_excess_defer, "Frames with excessive derferrals");
1789 ALC_SYSCTL_STAT_ADD32(ctx, child, "defers",
1790 &stats->tx_excess_defer, "Frames with derferrals");
1791 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_octets",
1792 &stats->tx_bytes, "Good octets");
1793 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_bcast_octets",
1794 &stats->tx_bcast_bytes, "Good broadcast octets");
1795 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_mcast_octets",
1796 &stats->tx_mcast_bytes, "Good multicast octets");
1797 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_64",
1798 &stats->tx_pkts_64, "64 bytes frames");
1799 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_65_127",
1800 &stats->tx_pkts_65_127, "65 to 127 bytes frames");
1801 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_128_255",
1802 &stats->tx_pkts_128_255, "128 to 255 bytes frames");
1803 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_256_511",
1804 &stats->tx_pkts_256_511, "256 to 511 bytes frames");
1805 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_512_1023",
1806 &stats->tx_pkts_512_1023, "512 to 1023 bytes frames");
1807 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_1024_1518",
1808 &stats->tx_pkts_1024_1518, "1024 to 1518 bytes frames");
1809 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_1519_max",
1810 &stats->tx_pkts_1519_max, "1519 to max frames");
1811 ALC_SYSCTL_STAT_ADD32(ctx, child, "single_colls",
1812 &stats->tx_single_colls, "Single collisions");
1813 ALC_SYSCTL_STAT_ADD32(ctx, child, "multi_colls",
1814 &stats->tx_multi_colls, "Multiple collisions");
1815 ALC_SYSCTL_STAT_ADD32(ctx, child, "late_colls",
1816 &stats->tx_late_colls, "Late collisions");
1817 ALC_SYSCTL_STAT_ADD32(ctx, child, "excess_colls",
1818 &stats->tx_excess_colls, "Excessive collisions");
1819 ALC_SYSCTL_STAT_ADD32(ctx, child, "underruns",
1820 &stats->tx_underrun, "FIFO underruns");
1821 ALC_SYSCTL_STAT_ADD32(ctx, child, "desc_underruns",
1822 &stats->tx_desc_underrun, "Descriptor write-back errors");
1823 ALC_SYSCTL_STAT_ADD32(ctx, child, "len_errs",
1824 &stats->tx_lenerrs, "Frames with length mismatched");
1825 ALC_SYSCTL_STAT_ADD32(ctx, child, "trunc_errs",
1826 &stats->tx_pkts_truncated, "Truncated frames due to MTU size");
1827 }
1828
1829 #undef ALC_SYSCTL_STAT_ADD32
1830 #undef ALC_SYSCTL_STAT_ADD64
1831
1832 struct alc_dmamap_arg {
1833 bus_addr_t alc_busaddr;
1834 };
1835
1836 static void
alc_dmamap_cb(void * arg,bus_dma_segment_t * segs,int nsegs,int error)1837 alc_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
1838 {
1839 struct alc_dmamap_arg *ctx;
1840
1841 if (error != 0)
1842 return;
1843
1844 KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs));
1845
1846 ctx = (struct alc_dmamap_arg *)arg;
1847 ctx->alc_busaddr = segs[0].ds_addr;
1848 }
1849
1850 #ifdef foo
1851 /*
1852 * Normal and high Tx descriptors shares single Tx high address.
1853 * Four Rx descriptor/return rings and CMB shares the same Rx
1854 * high address.
1855 */
1856 static int
alc_check_boundary(struct alc_softc * sc)1857 alc_check_boundary(struct alc_softc *sc)
1858 {
1859 bus_addr_t cmb_end, rx_ring_end, rr_ring_end, tx_ring_end;
1860
1861 rx_ring_end = sc->alc_rdata.alc_rx_ring_paddr + ALC_RX_RING_SZ;
1862 rr_ring_end = sc->alc_rdata.alc_rr_ring_paddr + ALC_RR_RING_SZ;
1863 cmb_end = sc->alc_rdata.alc_cmb_paddr + ALC_CMB_SZ;
1864 tx_ring_end = sc->alc_rdata.alc_tx_ring_paddr + ALC_TX_RING_SZ;
1865
1866 /* 4GB boundary crossing is not allowed. */
1867 if ((ALC_ADDR_HI(rx_ring_end) !=
1868 ALC_ADDR_HI(sc->alc_rdata.alc_rx_ring_paddr)) ||
1869 (ALC_ADDR_HI(rr_ring_end) !=
1870 ALC_ADDR_HI(sc->alc_rdata.alc_rr_ring_paddr)) ||
1871 (ALC_ADDR_HI(cmb_end) !=
1872 ALC_ADDR_HI(sc->alc_rdata.alc_cmb_paddr)) ||
1873 (ALC_ADDR_HI(tx_ring_end) !=
1874 ALC_ADDR_HI(sc->alc_rdata.alc_tx_ring_paddr)))
1875 return (EFBIG);
1876 /*
1877 * Make sure Rx return descriptor/Rx descriptor/CMB use
1878 * the same high address.
1879 */
1880 if ((ALC_ADDR_HI(rx_ring_end) != ALC_ADDR_HI(rr_ring_end)) ||
1881 (ALC_ADDR_HI(rx_ring_end) != ALC_ADDR_HI(cmb_end)))
1882 return (EFBIG);
1883
1884 return (0);
1885 }
1886 #endif
1887
1888 static int
alc_dma_alloc(struct alc_softc * sc)1889 alc_dma_alloc(struct alc_softc *sc)
1890 {
1891 struct alc_txdesc *txd;
1892 struct alc_rxdesc *rxd;
1893 struct alc_dmamap_arg ctx;
1894 int error, i;
1895
1896 /* Create parent DMA tag. */
1897 error = bus_dma_tag_create(
1898 sc->alc_cdata.alc_parent_tag, /* parent */
1899 1, 0, /* alignment, boundary */
1900 BUS_SPACE_MAXADDR, /* lowaddr */
1901 BUS_SPACE_MAXADDR, /* highaddr */
1902 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
1903 0, /* nsegments */
1904 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
1905 0, /* flags */
1906 &sc->alc_cdata.alc_parent_tag);
1907 if (error != 0) {
1908 device_printf(sc->alc_dev,
1909 "could not create parent DMA tag.\n");
1910 goto fail;
1911 }
1912
1913 /* Create DMA tag for Tx descriptor ring. */
1914 error = bus_dma_tag_create(
1915 sc->alc_cdata.alc_parent_tag, /* parent */
1916 ALC_TX_RING_ALIGN, 0, /* alignment, boundary */
1917 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
1918 BUS_SPACE_MAXADDR, /* highaddr */
1919 ALC_TX_RING_SZ, /* maxsize */
1920 1, /* nsegments */
1921 ALC_TX_RING_SZ, /* maxsegsize */
1922 0, /* flags */
1923 &sc->alc_cdata.alc_tx_ring_tag);
1924 if (error != 0) {
1925 device_printf(sc->alc_dev,
1926 "could not create Tx ring DMA tag.\n");
1927 goto fail;
1928 }
1929
1930 /* Create DMA tag for Rx free descriptor ring. */
1931 error = bus_dma_tag_create(
1932 sc->alc_cdata.alc_parent_tag, /* parent */
1933 ALC_RX_RING_ALIGN, 0, /* alignment, boundary */
1934 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
1935 BUS_SPACE_MAXADDR, /* highaddr */
1936 ALC_RX_RING_SZ, /* maxsize */
1937 1, /* nsegments */
1938 ALC_RX_RING_SZ, /* maxsegsize */
1939 0, /* flags */
1940 &sc->alc_cdata.alc_rx_ring_tag);
1941 if (error != 0) {
1942 device_printf(sc->alc_dev,
1943 "could not create Rx ring DMA tag.\n");
1944 goto fail;
1945 }
1946 /* Create DMA tag for Rx return descriptor ring. */
1947 error = bus_dma_tag_create(
1948 sc->alc_cdata.alc_parent_tag, /* parent */
1949 ALC_RR_RING_ALIGN, 0, /* alignment, boundary */
1950 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
1951 BUS_SPACE_MAXADDR, /* highaddr */
1952 ALC_RR_RING_SZ, /* maxsize */
1953 1, /* nsegments */
1954 ALC_RR_RING_SZ, /* maxsegsize */
1955 0, /* flags */
1956 &sc->alc_cdata.alc_rr_ring_tag);
1957 if (error != 0) {
1958 device_printf(sc->alc_dev,
1959 "could not create Rx return ring DMA tag.\n");
1960 goto fail;
1961 }
1962
1963 /* Create DMA tag for coalescing message block. */
1964 error = bus_dma_tag_create(
1965 sc->alc_cdata.alc_parent_tag, /* parent */
1966 ALC_CMB_ALIGN, 0, /* alignment, boundary */
1967 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
1968 BUS_SPACE_MAXADDR, /* highaddr */
1969 ALC_CMB_SZ, /* maxsize */
1970 1, /* nsegments */
1971 ALC_CMB_SZ, /* maxsegsize */
1972 0, /* flags */
1973 &sc->alc_cdata.alc_cmb_tag);
1974 if (error != 0) {
1975 device_printf(sc->alc_dev,
1976 "could not create CMB DMA tag.\n");
1977 goto fail;
1978 }
1979 /* Create DMA tag for status message block. */
1980 error = bus_dma_tag_create(
1981 sc->alc_cdata.alc_parent_tag, /* parent */
1982 ALC_SMB_ALIGN, 0, /* alignment, boundary */
1983 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
1984 BUS_SPACE_MAXADDR, /* highaddr */
1985 ALC_SMB_SZ, /* maxsize */
1986 1, /* nsegments */
1987 ALC_SMB_SZ, /* maxsegsize */
1988 0, /* flags */
1989 &sc->alc_cdata.alc_smb_tag);
1990 if (error != 0) {
1991 device_printf(sc->alc_dev,
1992 "could not create SMB DMA tag.\n");
1993 goto fail;
1994 }
1995
1996 /* Allocate DMA'able memory and load the DMA map for Tx ring. */
1997 error = bus_dmamem_alloc(sc->alc_cdata.alc_tx_ring_tag,
1998 (void **)&sc->alc_rdata.alc_tx_ring,
1999 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
2000 &sc->alc_cdata.alc_tx_ring_map);
2001 if (error != 0) {
2002 device_printf(sc->alc_dev,
2003 "could not allocate DMA'able memory for Tx ring.\n");
2004 goto fail;
2005 }
2006 ctx.alc_busaddr = 0;
2007 error = bus_dmamap_load(sc->alc_cdata.alc_tx_ring_tag,
2008 sc->alc_cdata.alc_tx_ring_map, sc->alc_rdata.alc_tx_ring,
2009 ALC_TX_RING_SZ, alc_dmamap_cb, &ctx, 0);
2010 if (error != 0 || ctx.alc_busaddr == 0) {
2011 device_printf(sc->alc_dev,
2012 "could not load DMA'able memory for Tx ring.\n");
2013 goto fail;
2014 }
2015 sc->alc_rdata.alc_tx_ring_paddr = ctx.alc_busaddr;
2016
2017 /* Allocate DMA'able memory and load the DMA map for Rx ring. */
2018 error = bus_dmamem_alloc(sc->alc_cdata.alc_rx_ring_tag,
2019 (void **)&sc->alc_rdata.alc_rx_ring,
2020 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
2021 &sc->alc_cdata.alc_rx_ring_map);
2022 if (error != 0) {
2023 device_printf(sc->alc_dev,
2024 "could not allocate DMA'able memory for Rx ring.\n");
2025 goto fail;
2026 }
2027 ctx.alc_busaddr = 0;
2028 error = bus_dmamap_load(sc->alc_cdata.alc_rx_ring_tag,
2029 sc->alc_cdata.alc_rx_ring_map, sc->alc_rdata.alc_rx_ring,
2030 ALC_RX_RING_SZ, alc_dmamap_cb, &ctx, 0);
2031 if (error != 0 || ctx.alc_busaddr == 0) {
2032 device_printf(sc->alc_dev,
2033 "could not load DMA'able memory for Rx ring.\n");
2034 goto fail;
2035 }
2036 sc->alc_rdata.alc_rx_ring_paddr = ctx.alc_busaddr;
2037
2038 /* Allocate DMA'able memory and load the DMA map for Rx return ring. */
2039 error = bus_dmamem_alloc(sc->alc_cdata.alc_rr_ring_tag,
2040 (void **)&sc->alc_rdata.alc_rr_ring,
2041 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
2042 &sc->alc_cdata.alc_rr_ring_map);
2043 if (error != 0) {
2044 device_printf(sc->alc_dev,
2045 "could not allocate DMA'able memory for Rx return ring.\n");
2046 goto fail;
2047 }
2048 ctx.alc_busaddr = 0;
2049 error = bus_dmamap_load(sc->alc_cdata.alc_rr_ring_tag,
2050 sc->alc_cdata.alc_rr_ring_map, sc->alc_rdata.alc_rr_ring,
2051 ALC_RR_RING_SZ, alc_dmamap_cb, &ctx, 0);
2052 if (error != 0 || ctx.alc_busaddr == 0) {
2053 device_printf(sc->alc_dev,
2054 "could not load DMA'able memory for Tx ring.\n");
2055 goto fail;
2056 }
2057 sc->alc_rdata.alc_rr_ring_paddr = ctx.alc_busaddr;
2058
2059 /* Allocate DMA'able memory and load the DMA map for CMB. */
2060 error = bus_dmamem_alloc(sc->alc_cdata.alc_cmb_tag,
2061 (void **)&sc->alc_rdata.alc_cmb,
2062 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
2063 &sc->alc_cdata.alc_cmb_map);
2064 if (error != 0) {
2065 device_printf(sc->alc_dev,
2066 "could not allocate DMA'able memory for CMB.\n");
2067 goto fail;
2068 }
2069 ctx.alc_busaddr = 0;
2070 error = bus_dmamap_load(sc->alc_cdata.alc_cmb_tag,
2071 sc->alc_cdata.alc_cmb_map, sc->alc_rdata.alc_cmb,
2072 ALC_CMB_SZ, alc_dmamap_cb, &ctx, 0);
2073 if (error != 0 || ctx.alc_busaddr == 0) {
2074 device_printf(sc->alc_dev,
2075 "could not load DMA'able memory for CMB.\n");
2076 goto fail;
2077 }
2078 sc->alc_rdata.alc_cmb_paddr = ctx.alc_busaddr;
2079
2080 /* Allocate DMA'able memory and load the DMA map for SMB. */
2081 error = bus_dmamem_alloc(sc->alc_cdata.alc_smb_tag,
2082 (void **)&sc->alc_rdata.alc_smb,
2083 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
2084 &sc->alc_cdata.alc_smb_map);
2085 if (error != 0) {
2086 device_printf(sc->alc_dev,
2087 "could not allocate DMA'able memory for SMB.\n");
2088 goto fail;
2089 }
2090 ctx.alc_busaddr = 0;
2091 error = bus_dmamap_load(sc->alc_cdata.alc_smb_tag,
2092 sc->alc_cdata.alc_smb_map, sc->alc_rdata.alc_smb,
2093 ALC_SMB_SZ, alc_dmamap_cb, &ctx, 0);
2094 if (error != 0 || ctx.alc_busaddr == 0) {
2095 device_printf(sc->alc_dev,
2096 "could not load DMA'able memory for CMB.\n");
2097 goto fail;
2098 }
2099 sc->alc_rdata.alc_smb_paddr = ctx.alc_busaddr;
2100
2101 #ifdef foo
2102 /*
2103 * All of the status blocks and descriptor rings are
2104 * allocated at lower 4GB, their addresses high 32bits
2105 * part are same (all 0).
2106 */
2107
2108 /* Make sure we've not crossed 4GB boundary. */
2109 if ((error = alc_check_boundary(sc)) != 0) {
2110 device_printf(sc->alc_dev, "4GB boundary crossed, "
2111 "switching to 32bit DMA addressing mode.\n");
2112 alc_dma_free(sc);
2113 /*
2114 * Limit max allowable DMA address space to 32bit
2115 * and try again.
2116 */
2117 lowaddr = BUS_SPACE_MAXADDR_32BIT;
2118 goto again;
2119 }
2120 #endif
2121
2122 /*
2123 * Create Tx buffer parent tag.
2124 * AR81[3567]x allows 64bit DMA addressing of Tx/Rx buffers
2125 * so it needs separate parent DMA tag as parent DMA address
2126 * space could be restricted to be within 32bit address space
2127 * by 4GB boundary crossing.
2128 */
2129 error = bus_dma_tag_create(
2130 sc->alc_cdata.alc_parent_tag, /* parent */
2131 1, 0, /* alignment, boundary */
2132 BUS_SPACE_MAXADDR, /* lowaddr */
2133 BUS_SPACE_MAXADDR, /* highaddr */
2134 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
2135 0, /* nsegments */
2136 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
2137 0, /* flags */
2138 &sc->alc_cdata.alc_buffer_tag);
2139 if (error != 0) {
2140 device_printf(sc->alc_dev,
2141 "could not create parent buffer DMA tag.\n");
2142 goto fail;
2143 }
2144
2145 /* Create DMA tag for Tx buffers. */
2146 error = bus_dma_tag_create(
2147 sc->alc_cdata.alc_buffer_tag, /* parent */
2148 1, 0, /* alignment, boundary */
2149 BUS_SPACE_MAXADDR, /* lowaddr */
2150 BUS_SPACE_MAXADDR, /* highaddr */
2151 ALC_TSO_MAXSIZE, /* maxsize */
2152 ALC_MAXTXSEGS, /* nsegments */
2153 ALC_TSO_MAXSEGSIZE, /* maxsegsize */
2154 BUS_DMA_ALLOCNOW | BUS_DMA_WAITOK | BUS_DMA_ONEBPAGE, /* flags */
2155 &sc->alc_cdata.alc_tx_tag);
2156 if (error != 0) {
2157 device_printf(sc->alc_dev, "could not create Tx DMA tag.\n");
2158 goto fail;
2159 }
2160
2161 /* Create DMA tag for Rx buffers. */
2162 error = bus_dma_tag_create(
2163 sc->alc_cdata.alc_buffer_tag, /* parent */
2164 ALC_RX_BUF_ALIGN, 0, /* alignment, boundary */
2165 BUS_SPACE_MAXADDR, /* lowaddr */
2166 BUS_SPACE_MAXADDR, /* highaddr */
2167 MCLBYTES, /* maxsize */
2168 1, /* nsegments */
2169 MCLBYTES, /* maxsegsize */
2170 BUS_DMA_WAITOK | BUS_DMA_ALLOCNOW | BUS_DMA_ALIGNED, /* flags */
2171 &sc->alc_cdata.alc_rx_tag);
2172 if (error != 0) {
2173 device_printf(sc->alc_dev, "could not create Rx DMA tag.\n");
2174 goto fail;
2175 }
2176 /* Create DMA maps for Tx buffers. */
2177 for (i = 0; i < ALC_TX_RING_CNT; i++) {
2178 txd = &sc->alc_cdata.alc_txdesc[i];
2179 txd->tx_m = NULL;
2180 txd->tx_dmamap = NULL;
2181 error = bus_dmamap_create(sc->alc_cdata.alc_tx_tag,
2182 BUS_DMA_WAITOK | BUS_DMA_ONEBPAGE,
2183 &txd->tx_dmamap);
2184 if (error != 0) {
2185 device_printf(sc->alc_dev,
2186 "could not create Tx dmamap.\n");
2187 goto fail;
2188 }
2189 }
2190 /* Create DMA maps for Rx buffers. */
2191 error = bus_dmamap_create(sc->alc_cdata.alc_rx_tag,
2192 BUS_DMA_WAITOK,
2193 &sc->alc_cdata.alc_rx_sparemap);
2194 if (error) {
2195 device_printf(sc->alc_dev,
2196 "could not create spare Rx dmamap.\n");
2197 goto fail;
2198 }
2199 for (i = 0; i < ALC_RX_RING_CNT; i++) {
2200 rxd = &sc->alc_cdata.alc_rxdesc[i];
2201 rxd->rx_m = NULL;
2202 rxd->rx_dmamap = NULL;
2203 error = bus_dmamap_create(sc->alc_cdata.alc_rx_tag,
2204 BUS_DMA_WAITOK,
2205 &rxd->rx_dmamap);
2206 if (error != 0) {
2207 device_printf(sc->alc_dev,
2208 "could not create Rx dmamap.\n");
2209 goto fail;
2210 }
2211 }
2212
2213 fail:
2214 return (error);
2215 }
2216
2217 static void
alc_dma_free(struct alc_softc * sc)2218 alc_dma_free(struct alc_softc *sc)
2219 {
2220 struct alc_txdesc *txd;
2221 struct alc_rxdesc *rxd;
2222 int i;
2223
2224 /* Tx buffers. */
2225 if (sc->alc_cdata.alc_tx_tag != NULL) {
2226 for (i = 0; i < ALC_TX_RING_CNT; i++) {
2227 txd = &sc->alc_cdata.alc_txdesc[i];
2228 if (txd->tx_dmamap != NULL) {
2229 bus_dmamap_destroy(sc->alc_cdata.alc_tx_tag,
2230 txd->tx_dmamap);
2231 txd->tx_dmamap = NULL;
2232 }
2233 }
2234 bus_dma_tag_destroy(sc->alc_cdata.alc_tx_tag);
2235 sc->alc_cdata.alc_tx_tag = NULL;
2236 }
2237 /* Rx buffers */
2238 if (sc->alc_cdata.alc_rx_tag != NULL) {
2239 for (i = 0; i < ALC_RX_RING_CNT; i++) {
2240 rxd = &sc->alc_cdata.alc_rxdesc[i];
2241 if (rxd->rx_dmamap != NULL) {
2242 bus_dmamap_destroy(sc->alc_cdata.alc_rx_tag,
2243 rxd->rx_dmamap);
2244 rxd->rx_dmamap = NULL;
2245 }
2246 }
2247 if (sc->alc_cdata.alc_rx_sparemap != NULL) {
2248 bus_dmamap_destroy(sc->alc_cdata.alc_rx_tag,
2249 sc->alc_cdata.alc_rx_sparemap);
2250 sc->alc_cdata.alc_rx_sparemap = NULL;
2251 }
2252 bus_dma_tag_destroy(sc->alc_cdata.alc_rx_tag);
2253 sc->alc_cdata.alc_rx_tag = NULL;
2254 }
2255 /* Tx descriptor ring. */
2256 if (sc->alc_cdata.alc_tx_ring_tag != NULL) {
2257 if (sc->alc_rdata.alc_tx_ring_paddr != 0)
2258 bus_dmamap_unload(sc->alc_cdata.alc_tx_ring_tag,
2259 sc->alc_cdata.alc_tx_ring_map);
2260 if (sc->alc_rdata.alc_tx_ring != NULL)
2261 bus_dmamem_free(sc->alc_cdata.alc_tx_ring_tag,
2262 sc->alc_rdata.alc_tx_ring,
2263 sc->alc_cdata.alc_tx_ring_map);
2264 sc->alc_rdata.alc_tx_ring_paddr = 0;
2265 sc->alc_rdata.alc_tx_ring = NULL;
2266 sc->alc_cdata.alc_tx_ring_map = NULL;
2267 bus_dma_tag_destroy(sc->alc_cdata.alc_tx_ring_tag);
2268 sc->alc_cdata.alc_tx_ring_tag = NULL;
2269 }
2270 /* Rx ring. */
2271 if (sc->alc_cdata.alc_rx_ring_tag != NULL) {
2272 if (sc->alc_rdata.alc_rx_ring_paddr != 0)
2273 bus_dmamap_unload(sc->alc_cdata.alc_rx_ring_tag,
2274 sc->alc_cdata.alc_rx_ring_map);
2275 if (sc->alc_rdata.alc_rx_ring != NULL)
2276 bus_dmamem_free(sc->alc_cdata.alc_rx_ring_tag,
2277 sc->alc_rdata.alc_rx_ring,
2278 sc->alc_cdata.alc_rx_ring_map);
2279 sc->alc_rdata.alc_rx_ring_paddr = 0;
2280 sc->alc_rdata.alc_rx_ring = NULL;
2281 sc->alc_cdata.alc_rx_ring_map = NULL;
2282 bus_dma_tag_destroy(sc->alc_cdata.alc_rx_ring_tag);
2283 sc->alc_cdata.alc_rx_ring_tag = NULL;
2284 }
2285 /* Rx return ring. */
2286 if (sc->alc_cdata.alc_rr_ring_tag != NULL) {
2287 if (sc->alc_rdata.alc_rr_ring_paddr != 0)
2288 bus_dmamap_unload(sc->alc_cdata.alc_rr_ring_tag,
2289 sc->alc_cdata.alc_rr_ring_map);
2290 if (sc->alc_rdata.alc_rr_ring != NULL)
2291 bus_dmamem_free(sc->alc_cdata.alc_rr_ring_tag,
2292 sc->alc_rdata.alc_rr_ring,
2293 sc->alc_cdata.alc_rr_ring_map);
2294 sc->alc_rdata.alc_rr_ring_paddr = 0;
2295 sc->alc_rdata.alc_rr_ring = NULL;
2296 sc->alc_cdata.alc_rr_ring_map = NULL;
2297 bus_dma_tag_destroy(sc->alc_cdata.alc_rr_ring_tag);
2298 sc->alc_cdata.alc_rr_ring_tag = NULL;
2299 }
2300 /* CMB block */
2301 if (sc->alc_cdata.alc_cmb_tag != NULL) {
2302 if (sc->alc_rdata.alc_cmb_paddr != 0)
2303 bus_dmamap_unload(sc->alc_cdata.alc_cmb_tag,
2304 sc->alc_cdata.alc_cmb_map);
2305 if (sc->alc_rdata.alc_cmb != NULL)
2306 bus_dmamem_free(sc->alc_cdata.alc_cmb_tag,
2307 sc->alc_rdata.alc_cmb,
2308 sc->alc_cdata.alc_cmb_map);
2309 sc->alc_rdata.alc_cmb_paddr = 0;
2310 sc->alc_rdata.alc_cmb = NULL;
2311 sc->alc_cdata.alc_cmb_map = NULL;
2312 bus_dma_tag_destroy(sc->alc_cdata.alc_cmb_tag);
2313 sc->alc_cdata.alc_cmb_tag = NULL;
2314 }
2315 /* SMB block */
2316 if (sc->alc_cdata.alc_smb_tag != NULL) {
2317 if (sc->alc_rdata.alc_smb_paddr != 0)
2318 bus_dmamap_unload(sc->alc_cdata.alc_smb_tag,
2319 sc->alc_cdata.alc_smb_map);
2320 if (sc->alc_rdata.alc_smb != NULL)
2321 bus_dmamem_free(sc->alc_cdata.alc_smb_tag,
2322 sc->alc_rdata.alc_smb,
2323 sc->alc_cdata.alc_smb_map);
2324 sc->alc_rdata.alc_smb_paddr = 0;
2325 sc->alc_rdata.alc_smb = NULL;
2326 sc->alc_cdata.alc_smb_map = NULL;
2327 bus_dma_tag_destroy(sc->alc_cdata.alc_smb_tag);
2328 sc->alc_cdata.alc_smb_tag = NULL;
2329 }
2330 if (sc->alc_cdata.alc_buffer_tag != NULL) {
2331 bus_dma_tag_destroy(sc->alc_cdata.alc_buffer_tag);
2332 sc->alc_cdata.alc_buffer_tag = NULL;
2333 }
2334 if (sc->alc_cdata.alc_parent_tag != NULL) {
2335 bus_dma_tag_destroy(sc->alc_cdata.alc_parent_tag);
2336 sc->alc_cdata.alc_parent_tag = NULL;
2337 }
2338 }
2339
2340 static int
alc_shutdown(device_t dev)2341 alc_shutdown(device_t dev)
2342 {
2343
2344 return (alc_suspend(dev));
2345 }
2346
2347 #if 0
2348 /* XXX: LINK SPEED */
2349 /*
2350 * Note, this driver resets the link speed to 10/100Mbps by
2351 * restarting auto-negotiation in suspend/shutdown phase but we
2352 * don't know whether that auto-negotiation would succeed or not
2353 * as driver has no control after powering off/suspend operation.
2354 * If the renegotiation fail WOL may not work. Running at 1Gbps
2355 * will draw more power than 375mA at 3.3V which is specified in
2356 * PCI specification and that would result in complete
2357 * shutdowning power to ethernet controller.
2358 *
2359 * TODO
2360 * Save current negotiated media speed/duplex/flow-control to
2361 * softc and restore the same link again after resuming. PHY
2362 * handling such as power down/resetting to 100Mbps may be better
2363 * handled in suspend method in phy driver.
2364 */
2365 static void
2366 alc_setlinkspeed(struct alc_softc *sc)
2367 {
2368 struct mii_data *mii;
2369 int aneg, i;
2370
2371 mii = device_get_softc(sc->alc_miibus);
2372 mii_pollstat(mii);
2373 aneg = 0;
2374 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) ==
2375 (IFM_ACTIVE | IFM_AVALID)) {
2376 switch IFM_SUBTYPE(mii->mii_media_active) {
2377 case IFM_10_T:
2378 case IFM_100_TX:
2379 return;
2380 case IFM_1000_T:
2381 aneg++;
2382 break;
2383 default:
2384 break;
2385 }
2386 }
2387 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, MII_100T2CR, 0);
2388 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
2389 MII_ANAR, ANAR_TX_FD | ANAR_TX | ANAR_10_FD | ANAR_10 | ANAR_CSMA);
2390 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
2391 MII_BMCR, BMCR_RESET | BMCR_AUTOEN | BMCR_STARTNEG);
2392 DELAY(1000);
2393 if (aneg != 0) {
2394 /*
2395 * Poll link state until alc(4) get a 10/100Mbps link.
2396 */
2397 for (i = 0; i < MII_ANEGTICKS_GIGE; i++) {
2398 mii_pollstat(mii);
2399 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID))
2400 == (IFM_ACTIVE | IFM_AVALID)) {
2401 switch (IFM_SUBTYPE(
2402 mii->mii_media_active)) {
2403 case IFM_10_T:
2404 case IFM_100_TX:
2405 alc_mac_config(sc);
2406 return;
2407 default:
2408 break;
2409 }
2410 }
2411 ALC_UNLOCK(sc);
2412 pause("alclnk", hz);
2413 ALC_LOCK(sc);
2414 }
2415 if (i == MII_ANEGTICKS_GIGE)
2416 device_printf(sc->alc_dev,
2417 "establishing a link failed, WOL may not work!");
2418 }
2419 /*
2420 * No link, force MAC to have 100Mbps, full-duplex link.
2421 * This is the last resort and may/may not work.
2422 */
2423 mii->mii_media_status = IFM_AVALID | IFM_ACTIVE;
2424 mii->mii_media_active = IFM_ETHER | IFM_100_TX | IFM_FDX;
2425 alc_mac_config(sc);
2426 }
2427 #endif
2428
2429 #if 0
2430 /* XXX: WOL */
2431 static void
2432 alc_setwol(struct alc_softc *sc)
2433 {
2434 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
2435 alc_setwol_816x(sc);
2436 else
2437 alc_setwol_813x(sc);
2438 }
2439
2440 static void
2441 alc_setwol_813x(struct alc_softc *sc)
2442 {
2443 struct ifnet *ifp;
2444 uint32_t reg, pmcs;
2445 uint16_t pmstat;
2446
2447 ALC_LOCK_ASSERT(sc);
2448
2449 alc_disable_l0s_l1(sc);
2450 ifp = sc->alc_ifp;
2451 if ((sc->alc_flags & ALC_FLAG_PM) == 0) {
2452 /* Disable WOL. */
2453 CSR_WRITE_4(sc, ALC_WOL_CFG, 0);
2454 reg = CSR_READ_4(sc, ALC_PCIE_PHYMISC);
2455 reg |= PCIE_PHYMISC_FORCE_RCV_DET;
2456 CSR_WRITE_4(sc, ALC_PCIE_PHYMISC, reg);
2457 /* Force PHY power down. */
2458 alc_phy_down(sc);
2459 CSR_WRITE_4(sc, ALC_MASTER_CFG,
2460 CSR_READ_4(sc, ALC_MASTER_CFG) | MASTER_CLK_SEL_DIS);
2461 return;
2462 }
2463
2464 if ((ifp->if_capenable & IFCAP_WOL) != 0) {
2465 if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0)
2466 alc_setlinkspeed(sc);
2467 CSR_WRITE_4(sc, ALC_MASTER_CFG,
2468 CSR_READ_4(sc, ALC_MASTER_CFG) & ~MASTER_CLK_SEL_DIS);
2469 }
2470
2471 pmcs = 0;
2472 if ((ifp->if_capenable & IFCAP_WOL_MAGIC) != 0)
2473 pmcs |= WOL_CFG_MAGIC | WOL_CFG_MAGIC_ENB;
2474 CSR_WRITE_4(sc, ALC_WOL_CFG, pmcs);
2475 reg = CSR_READ_4(sc, ALC_MAC_CFG);
2476 reg &= ~(MAC_CFG_DBG | MAC_CFG_PROMISC | MAC_CFG_ALLMULTI |
2477 MAC_CFG_BCAST);
2478 if ((ifp->if_capenable & IFCAP_WOL_MCAST) != 0)
2479 reg |= MAC_CFG_ALLMULTI | MAC_CFG_BCAST;
2480 if ((ifp->if_capenable & IFCAP_WOL) != 0)
2481 reg |= MAC_CFG_RX_ENB;
2482 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
2483
2484 reg = CSR_READ_4(sc, ALC_PCIE_PHYMISC);
2485 reg |= PCIE_PHYMISC_FORCE_RCV_DET;
2486 CSR_WRITE_4(sc, ALC_PCIE_PHYMISC, reg);
2487 if ((ifp->if_capenable & IFCAP_WOL) == 0) {
2488 /* WOL disabled, PHY power down. */
2489 alc_phy_down(sc);
2490 CSR_WRITE_4(sc, ALC_MASTER_CFG,
2491 CSR_READ_4(sc, ALC_MASTER_CFG) | MASTER_CLK_SEL_DIS);
2492
2493 }
2494 /* Request PME. */
2495 pmstat = pci_read_config(sc->alc_dev,
2496 sc->alc_pmcap + PCIR_POWER_STATUS, 2);
2497 pmstat &= ~(PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE);
2498 if ((ifp->if_capenable & IFCAP_WOL) != 0)
2499 pmstat |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE;
2500 pci_write_config(sc->alc_dev,
2501 sc->alc_pmcap + PCIR_POWER_STATUS, pmstat, 2);
2502 }
2503
2504 static void
2505 alc_setwol_816x(struct alc_softc *sc)
2506 {
2507 struct ifnet *ifp;
2508 uint32_t gphy, mac, master, pmcs, reg;
2509 uint16_t pmstat;
2510
2511 ALC_LOCK_ASSERT(sc);
2512
2513 ifp = sc->alc_ifp;
2514 master = CSR_READ_4(sc, ALC_MASTER_CFG);
2515 master &= ~MASTER_CLK_SEL_DIS;
2516 gphy = CSR_READ_4(sc, ALC_GPHY_CFG);
2517 gphy &= ~(GPHY_CFG_EXT_RESET | GPHY_CFG_LED_MODE | GPHY_CFG_100AB_ENB |
2518 GPHY_CFG_PHY_PLL_ON);
2519 gphy |= GPHY_CFG_HIB_EN | GPHY_CFG_HIB_PULSE | GPHY_CFG_SEL_ANA_RESET;
2520 if ((sc->alc_flags & ALC_FLAG_PM) == 0) {
2521 CSR_WRITE_4(sc, ALC_WOL_CFG, 0);
2522 gphy |= GPHY_CFG_PHY_IDDQ | GPHY_CFG_PWDOWN_HW;
2523 mac = CSR_READ_4(sc, ALC_MAC_CFG);
2524 } else {
2525 if ((ifp->if_capenable & IFCAP_WOL) != 0) {
2526 gphy |= GPHY_CFG_EXT_RESET;
2527 if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0)
2528 alc_setlinkspeed(sc);
2529 }
2530 pmcs = 0;
2531 if ((ifp->if_capenable & IFCAP_WOL_MAGIC) != 0)
2532 pmcs |= WOL_CFG_MAGIC | WOL_CFG_MAGIC_ENB;
2533 CSR_WRITE_4(sc, ALC_WOL_CFG, pmcs);
2534 mac = CSR_READ_4(sc, ALC_MAC_CFG);
2535 mac &= ~(MAC_CFG_DBG | MAC_CFG_PROMISC | MAC_CFG_ALLMULTI |
2536 MAC_CFG_BCAST);
2537 if ((ifp->if_capenable & IFCAP_WOL_MCAST) != 0)
2538 mac |= MAC_CFG_ALLMULTI | MAC_CFG_BCAST;
2539 if ((ifp->if_capenable & IFCAP_WOL) != 0)
2540 mac |= MAC_CFG_RX_ENB;
2541 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_S3DIG10,
2542 ANEG_S3DIG10_SL);
2543 }
2544
2545 /* Enable OSC. */
2546 reg = CSR_READ_4(sc, ALC_MISC);
2547 reg &= ~MISC_INTNLOSC_OPEN;
2548 CSR_WRITE_4(sc, ALC_MISC, reg);
2549 reg |= MISC_INTNLOSC_OPEN;
2550 CSR_WRITE_4(sc, ALC_MISC, reg);
2551 CSR_WRITE_4(sc, ALC_MASTER_CFG, master);
2552 CSR_WRITE_4(sc, ALC_MAC_CFG, mac);
2553 CSR_WRITE_4(sc, ALC_GPHY_CFG, gphy);
2554 reg = CSR_READ_4(sc, ALC_PDLL_TRNS1);
2555 reg |= PDLL_TRNS1_D3PLLOFF_ENB;
2556 CSR_WRITE_4(sc, ALC_PDLL_TRNS1, reg);
2557
2558 if ((sc->alc_flags & ALC_FLAG_PM) != 0) {
2559 /* Request PME. */
2560 pmstat = pci_read_config(sc->alc_dev,
2561 sc->alc_pmcap + PCIR_POWER_STATUS, 2);
2562 pmstat &= ~(PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE);
2563 if ((ifp->if_capenable & IFCAP_WOL) != 0)
2564 pmstat |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE;
2565 pci_write_config(sc->alc_dev,
2566 sc->alc_pmcap + PCIR_POWER_STATUS, pmstat, 2);
2567 }
2568 }
2569
2570 #endif
2571
2572 static int
alc_suspend(device_t dev)2573 alc_suspend(device_t dev)
2574 {
2575 struct alc_softc *sc = device_get_softc(dev);
2576 struct ifnet *ifp = &sc->arpcom.ac_if;
2577
2578 lwkt_serialize_enter(ifp->if_serializer);
2579 alc_stop(sc);
2580 #if 0
2581 /* XXX: WOL */
2582 alc_setwol(sc);
2583 #endif
2584 lwkt_serialize_exit(ifp->if_serializer);
2585
2586 return (0);
2587 }
2588
2589 static int
alc_resume(device_t dev)2590 alc_resume(device_t dev)
2591 {
2592 struct alc_softc *sc = device_get_softc(dev);
2593 struct ifnet *ifp = &sc->arpcom.ac_if;
2594 uint16_t pmstat;
2595
2596 lwkt_serialize_enter(ifp->if_serializer);
2597
2598 if ((sc->alc_flags & ALC_FLAG_PM) != 0) {
2599 /* Disable PME and clear PME status. */
2600 pmstat = pci_read_config(sc->alc_dev,
2601 sc->alc_pmcap + PCIR_POWER_STATUS, 2);
2602 if ((pmstat & PCIM_PSTAT_PMEENABLE) != 0) {
2603 pmstat &= ~PCIM_PSTAT_PMEENABLE;
2604 pci_write_config(sc->alc_dev,
2605 sc->alc_pmcap + PCIR_POWER_STATUS, pmstat, 2);
2606 }
2607 }
2608
2609 /* Reset PHY. */
2610 alc_phy_reset(sc);
2611 if (ifp->if_flags & IFF_UP)
2612 alc_init(sc);
2613
2614 lwkt_serialize_exit(ifp->if_serializer);
2615
2616 return (0);
2617 }
2618
2619 static int
alc_encap(struct alc_softc * sc,struct mbuf ** m_head)2620 alc_encap(struct alc_softc *sc, struct mbuf **m_head)
2621 {
2622 struct alc_txdesc *txd, *txd_last;
2623 struct tx_desc *desc;
2624 struct mbuf *m;
2625 struct ip *ip;
2626 struct tcphdr *tcp;
2627 bus_dma_segment_t txsegs[ALC_MAXTXSEGS];
2628 bus_dmamap_t map;
2629 uint32_t cflags, hdrlen, ip_off, poff, vtag;
2630 int error, idx, nsegs, prod;
2631
2632 M_ASSERTPKTHDR((*m_head));
2633
2634 m = *m_head;
2635 ip = NULL;
2636 tcp = NULL;
2637 ip_off = poff = 0;
2638 if ((m->m_pkthdr.csum_flags & (ALC_CSUM_FEATURES | CSUM_TSO)) != 0) {
2639 /*
2640 * AR81[3567]x requires offset of TCP/UDP header in its
2641 * Tx descriptor to perform Tx checksum offloading. TSO
2642 * also requires TCP header offset and modification of
2643 * IP/TCP header. This kind of operation takes many CPU
2644 * cycles on FreeBSD so fast host CPU is required to get
2645 * smooth TSO performance.
2646 */
2647 struct ether_header *eh;
2648
2649 if (M_WRITABLE(m) == 0) {
2650 /* Get a writable copy. */
2651 m = m_dup(*m_head, M_NOWAIT);
2652 /* Release original mbufs. */
2653 m_freem(*m_head);
2654 if (m == NULL) {
2655 *m_head = NULL;
2656 return (ENOBUFS);
2657 }
2658 *m_head = m;
2659 }
2660
2661 ip_off = sizeof(struct ether_header);
2662 m = m_pullup(m, ip_off + sizeof(struct ip));
2663 if (m == NULL) {
2664 *m_head = NULL;
2665 return (ENOBUFS);
2666 }
2667 eh = mtod(m, struct ether_header *);
2668 /*
2669 * Check if hardware VLAN insertion is off.
2670 * Additional check for LLC/SNAP frame?
2671 */
2672 if (eh->ether_type == htons(ETHERTYPE_VLAN)) {
2673 ip_off = sizeof(struct ether_vlan_header);
2674 m = m_pullup(m, ip_off);
2675 if (m == NULL) {
2676 *m_head = NULL;
2677 return (ENOBUFS);
2678 }
2679 }
2680 m = m_pullup(m, ip_off + sizeof(struct ip));
2681 if (m == NULL) {
2682 *m_head = NULL;
2683 return (ENOBUFS);
2684 }
2685 ip = (struct ip *)(mtod(m, char *) + ip_off);
2686 poff = ip_off + (ip->ip_hl << 2);
2687 if ((m->m_pkthdr.csum_flags & CSUM_TSO) != 0) {
2688 m = m_pullup(m, poff + sizeof(struct tcphdr));
2689 if (m == NULL) {
2690 *m_head = NULL;
2691 return (ENOBUFS);
2692 }
2693 tcp = (struct tcphdr *)(mtod(m, char *) + poff);
2694 m = m_pullup(m, poff + (tcp->th_off << 2));
2695 if (m == NULL) {
2696 *m_head = NULL;
2697 return (ENOBUFS);
2698 }
2699 /*
2700 * Due to strict adherence of Microsoft NDIS
2701 * Large Send specification, hardware expects
2702 * a pseudo TCP checksum inserted by upper
2703 * stack. Unfortunately the pseudo TCP
2704 * checksum that NDIS refers to does not include
2705 * TCP payload length so driver should recompute
2706 * the pseudo checksum here. Hopefully this
2707 * wouldn't be much burden on modern CPUs.
2708 *
2709 * Reset IP checksum and recompute TCP pseudo
2710 * checksum as NDIS specification said.
2711 */
2712 ip = (struct ip *)(mtod(m, char *) + ip_off);
2713 tcp = (struct tcphdr *)(mtod(m, char *) + poff);
2714 ip->ip_sum = 0;
2715 tcp->th_sum = in_pseudo(ip->ip_src.s_addr,
2716 ip->ip_dst.s_addr, htons(IPPROTO_TCP));
2717 }
2718 *m_head = m;
2719 }
2720
2721 prod = sc->alc_cdata.alc_tx_prod;
2722 txd = &sc->alc_cdata.alc_txdesc[prod];
2723 txd_last = txd;
2724 map = txd->tx_dmamap;
2725
2726 error = bus_dmamap_load_mbuf_defrag(
2727 sc->alc_cdata.alc_tx_tag, map, m_head,
2728 txsegs, ALC_MAXTXSEGS, &nsegs, BUS_DMA_NOWAIT);
2729 if (error) {
2730 m_freem(*m_head);
2731 *m_head = NULL;
2732 return (error);
2733 }
2734 if (nsegs == 0) {
2735 m_freem(*m_head);
2736 *m_head = NULL;
2737 return (EIO);
2738 }
2739
2740 /* Check descriptor overrun. */
2741 if (sc->alc_cdata.alc_tx_cnt + nsegs >= ALC_TX_RING_CNT - 3) {
2742 bus_dmamap_unload(sc->alc_cdata.alc_tx_tag, map);
2743 return (ENOBUFS);
2744 }
2745 bus_dmamap_sync(sc->alc_cdata.alc_tx_tag, map, BUS_DMASYNC_PREWRITE);
2746
2747 m = *m_head;
2748 cflags = TD_ETHERNET;
2749 vtag = 0;
2750 desc = NULL;
2751 idx = 0;
2752 /* Configure VLAN hardware tag insertion. */
2753 if ((m->m_flags & M_VLANTAG) != 0) {
2754 vtag = htons(m->m_pkthdr.ether_vlantag);
2755 vtag = (vtag << TD_VLAN_SHIFT) & TD_VLAN_MASK;
2756 cflags |= TD_INS_VLAN_TAG;
2757 }
2758 if ((m->m_pkthdr.csum_flags & CSUM_TSO) != 0) {
2759 /* Request TSO and set MSS. */
2760 cflags |= TD_TSO | TD_TSO_DESCV1;
2761 cflags |= ((uint32_t)m->m_pkthdr.tso_segsz << TD_MSS_SHIFT) &
2762 TD_MSS_MASK;
2763 /* Set TCP header offset. */
2764 cflags |= (poff << TD_TCPHDR_OFFSET_SHIFT) &
2765 TD_TCPHDR_OFFSET_MASK;
2766 /*
2767 * AR81[3567]x requires the first buffer should
2768 * only hold IP/TCP header data. Payload should
2769 * be handled in other descriptors.
2770 */
2771 hdrlen = poff + (tcp->th_off << 2);
2772 desc = &sc->alc_rdata.alc_tx_ring[prod];
2773 desc->len = htole32(TX_BYTES(hdrlen | vtag));
2774 desc->flags = htole32(cflags);
2775 desc->addr = htole64(txsegs[0].ds_addr);
2776 sc->alc_cdata.alc_tx_cnt++;
2777 ALC_DESC_INC(prod, ALC_TX_RING_CNT);
2778 if (m->m_len - hdrlen > 0) {
2779 /* Handle remaining payload of the first fragment. */
2780 desc = &sc->alc_rdata.alc_tx_ring[prod];
2781 desc->len = htole32(TX_BYTES((m->m_len - hdrlen) |
2782 vtag));
2783 desc->flags = htole32(cflags);
2784 desc->addr = htole64(txsegs[0].ds_addr + hdrlen);
2785 sc->alc_cdata.alc_tx_cnt++;
2786 ALC_DESC_INC(prod, ALC_TX_RING_CNT);
2787 }
2788 /* Handle remaining fragments. */
2789 idx = 1;
2790 } else if ((m->m_pkthdr.csum_flags & ALC_CSUM_FEATURES) != 0) {
2791 /* Configure Tx checksum offload. */
2792 #ifdef ALC_USE_CUSTOM_CSUM
2793 cflags |= TD_CUSTOM_CSUM;
2794 /* Set checksum start offset. */
2795 cflags |= ((poff >> 1) << TD_PLOAD_OFFSET_SHIFT) &
2796 TD_PLOAD_OFFSET_MASK;
2797 /* Set checksum insertion position of TCP/UDP. */
2798 cflags |= (((poff + m->m_pkthdr.csum_data) >> 1) <<
2799 TD_CUSTOM_CSUM_OFFSET_SHIFT) & TD_CUSTOM_CSUM_OFFSET_MASK;
2800 #else
2801 if ((m->m_pkthdr.csum_flags & CSUM_IP) != 0)
2802 cflags |= TD_IPCSUM;
2803 if ((m->m_pkthdr.csum_flags & CSUM_TCP) != 0)
2804 cflags |= TD_TCPCSUM;
2805 if ((m->m_pkthdr.csum_flags & CSUM_UDP) != 0)
2806 cflags |= TD_UDPCSUM;
2807 /* Set TCP/UDP header offset. */
2808 cflags |= (poff << TD_L4HDR_OFFSET_SHIFT) &
2809 TD_L4HDR_OFFSET_MASK;
2810 #endif
2811 }
2812
2813 for (; idx < nsegs; idx++) {
2814 desc = &sc->alc_rdata.alc_tx_ring[prod];
2815 desc->len = htole32(TX_BYTES(txsegs[idx].ds_len) | vtag);
2816 desc->flags = htole32(cflags);
2817 desc->addr = htole64(txsegs[idx].ds_addr);
2818 sc->alc_cdata.alc_tx_cnt++;
2819 ALC_DESC_INC(prod, ALC_TX_RING_CNT);
2820 }
2821 /* Update producer index. */
2822 sc->alc_cdata.alc_tx_prod = prod;
2823
2824 /* Finally set EOP on the last descriptor. */
2825 prod = (prod + ALC_TX_RING_CNT - 1) % ALC_TX_RING_CNT;
2826 desc = &sc->alc_rdata.alc_tx_ring[prod];
2827 desc->flags |= htole32(TD_EOP);
2828
2829 /* Swap dmamap of the first and the last. */
2830 txd = &sc->alc_cdata.alc_txdesc[prod];
2831 map = txd_last->tx_dmamap;
2832 txd_last->tx_dmamap = txd->tx_dmamap;
2833 txd->tx_dmamap = map;
2834 txd->tx_m = m;
2835
2836 return (0);
2837 }
2838
2839 static void
alc_start(struct ifnet * ifp,struct ifaltq_subque * ifsq)2840 alc_start(struct ifnet *ifp, struct ifaltq_subque *ifsq)
2841 {
2842 struct alc_softc *sc = ifp->if_softc;
2843 struct mbuf *m_head;
2844 int enq;
2845
2846 ASSERT_ALTQ_SQ_DEFAULT(ifp, ifsq);
2847 ASSERT_SERIALIZED(ifp->if_serializer);
2848
2849 /* Reclaim transmitted frames. */
2850 if (sc->alc_cdata.alc_tx_cnt >= ALC_TX_DESC_HIWAT)
2851 alc_txeof(sc);
2852
2853 if ((ifp->if_flags & IFF_RUNNING) == 0 || ifq_is_oactive(&ifp->if_snd))
2854 return;
2855 if ((sc->alc_flags & ALC_FLAG_LINK) == 0) {
2856 ifq_purge(&ifp->if_snd);
2857 return;
2858 }
2859
2860 for (enq = 0; !ifq_is_empty(&ifp->if_snd); ) {
2861 m_head = ifq_dequeue(&ifp->if_snd);
2862 if (m_head == NULL)
2863 break;
2864 /*
2865 * Pack the data into the transmit ring. If we
2866 * don't have room, set the OACTIVE flag and wait
2867 * for the NIC to drain the ring.
2868 */
2869 if (alc_encap(sc, &m_head)) {
2870 if (m_head == NULL)
2871 break;
2872 ifq_prepend(&ifp->if_snd, m_head);
2873 ifq_set_oactive(&ifp->if_snd);
2874 break;
2875 }
2876
2877 enq++;
2878 /*
2879 * If there's a BPF listener, bounce a copy of this frame
2880 * to him.
2881 */
2882 ETHER_BPF_MTAP(ifp, m_head);
2883 }
2884
2885 if (enq > 0) {
2886 /* Sync descriptors. */
2887 bus_dmamap_sync(sc->alc_cdata.alc_tx_ring_tag,
2888 sc->alc_cdata.alc_tx_ring_map, BUS_DMASYNC_PREWRITE);
2889 /* Kick. Assume we're using normal Tx priority queue. */
2890 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
2891 CSR_WRITE_2(sc, ALC_MBOX_TD_PRI0_PROD_IDX,
2892 (uint16_t)sc->alc_cdata.alc_tx_prod);
2893 else
2894 CSR_WRITE_4(sc, ALC_MBOX_TD_PROD_IDX,
2895 (sc->alc_cdata.alc_tx_prod <<
2896 MBOX_TD_PROD_LO_IDX_SHIFT) &
2897 MBOX_TD_PROD_LO_IDX_MASK);
2898 /* Set a timeout in case the chip goes out to lunch. */
2899 sc->alc_watchdog_timer = ALC_TX_TIMEOUT;
2900 }
2901 }
2902
2903 static void
alc_watchdog(struct alc_softc * sc)2904 alc_watchdog(struct alc_softc *sc)
2905 {
2906 struct ifnet *ifp = &sc->arpcom.ac_if;
2907
2908 ASSERT_SERIALIZED(ifp->if_serializer);
2909
2910 if (sc->alc_watchdog_timer == 0 || --sc->alc_watchdog_timer)
2911 return;
2912
2913 if ((sc->alc_flags & ALC_FLAG_LINK) == 0) {
2914 if_printf(sc->alc_ifp, "watchdog timeout (lost link)\n");
2915 IFNET_STAT_INC(ifp, oerrors, 1);
2916 alc_init(sc);
2917 return;
2918 }
2919 if_printf(sc->alc_ifp, "watchdog timeout -- resetting\n");
2920 IFNET_STAT_INC(ifp, oerrors, 1);
2921 alc_init(sc);
2922 if (!ifq_is_empty(&ifp->if_snd))
2923 if_devstart(ifp);
2924 }
2925
2926 static int
alc_ioctl(struct ifnet * ifp,u_long cmd,caddr_t data,struct ucred * cr)2927 alc_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *cr)
2928 {
2929 struct alc_softc *sc;
2930 struct ifreq *ifr;
2931 struct mii_data *mii;
2932 int error, mask;
2933
2934 ASSERT_SERIALIZED(ifp->if_serializer);
2935
2936 sc = ifp->if_softc;
2937 ifr = (struct ifreq *)data;
2938 error = 0;
2939 switch (cmd) {
2940 case SIOCSIFMTU:
2941 if (ifr->ifr_mtu < ETHERMIN ||
2942 ifr->ifr_mtu > (sc->alc_ident->max_framelen -
2943 sizeof(struct ether_vlan_header) - ETHER_CRC_LEN) ||
2944 ((sc->alc_flags & ALC_FLAG_JUMBO) == 0 &&
2945 ifr->ifr_mtu > ETHERMTU)) {
2946 error = EINVAL;
2947 } else if (ifp->if_mtu != ifr->ifr_mtu) {
2948 ifp->if_mtu = ifr->ifr_mtu;
2949 #if 0
2950 /* AR81[3567]x has 13 bits MSS field. */
2951 if (ifp->if_mtu > ALC_TSO_MTU &&
2952 (ifp->if_capenable & IFCAP_TSO4) != 0) {
2953 ifp->if_capenable &= ~IFCAP_TSO4;
2954 ifp->if_hwassist &= ~CSUM_TSO;
2955 }
2956 #endif
2957 }
2958 break;
2959 case SIOCSIFFLAGS:
2960 if ((ifp->if_flags & IFF_UP) != 0) {
2961 if ((ifp->if_flags & IFF_RUNNING) != 0 &&
2962 ((ifp->if_flags ^ sc->alc_if_flags) &
2963 (IFF_PROMISC | IFF_ALLMULTI)) != 0)
2964 alc_rxfilter(sc);
2965 else if ((ifp->if_flags & IFF_RUNNING) == 0)
2966 alc_init(sc);
2967 } else if ((ifp->if_flags & IFF_RUNNING) != 0)
2968 alc_stop(sc);
2969 sc->alc_if_flags = ifp->if_flags;
2970 break;
2971 case SIOCADDMULTI:
2972 case SIOCDELMULTI:
2973 if ((ifp->if_flags & IFF_RUNNING) != 0)
2974 alc_rxfilter(sc);
2975 break;
2976 case SIOCSIFMEDIA:
2977 case SIOCGIFMEDIA:
2978 mii = device_get_softc(sc->alc_miibus);
2979 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, cmd);
2980 break;
2981 case SIOCSIFCAP:
2982 mask = ifr->ifr_reqcap ^ ifp->if_capenable;
2983 if ((mask & IFCAP_TXCSUM) != 0 &&
2984 (ifp->if_capabilities & IFCAP_TXCSUM) != 0) {
2985 ifp->if_capenable ^= IFCAP_TXCSUM;
2986 if ((ifp->if_capenable & IFCAP_TXCSUM) != 0)
2987 ifp->if_hwassist |= ALC_CSUM_FEATURES;
2988 else
2989 ifp->if_hwassist &= ~ALC_CSUM_FEATURES;
2990 }
2991 #if 0
2992 /* XXX: WOL */
2993 if ((mask & IFCAP_WOL_MCAST) != 0 &&
2994 (ifp->if_capabilities & IFCAP_WOL_MCAST) != 0)
2995 ifp->if_capenable ^= IFCAP_WOL_MCAST;
2996 if ((mask & IFCAP_WOL_MAGIC) != 0 &&
2997 (ifp->if_capabilities & IFCAP_WOL_MAGIC) != 0)
2998 ifp->if_capenable ^= IFCAP_WOL_MAGIC;
2999 #endif
3000 if ((mask & IFCAP_VLAN_HWTAGGING) != 0 &&
3001 (ifp->if_capabilities & IFCAP_VLAN_HWTAGGING) != 0) {
3002 ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING;
3003 alc_rxvlan(sc);
3004 }
3005 if ((mask & IFCAP_VLAN_HWCSUM) != 0 &&
3006 (ifp->if_capabilities & IFCAP_VLAN_HWCSUM) != 0)
3007 ifp->if_capenable ^= IFCAP_VLAN_HWCSUM;
3008
3009 /*
3010 * VLAN hardware tagging is required to do checksum
3011 * offload or TSO on VLAN interface. Checksum offload
3012 * on VLAN interface also requires hardware checksum
3013 * offload of parent interface.
3014 */
3015 if ((ifp->if_capenable & IFCAP_TXCSUM) == 0)
3016 ifp->if_capenable &= ~IFCAP_VLAN_HWCSUM;
3017 if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) == 0)
3018 ifp->if_capenable &= ~IFCAP_VLAN_HWCSUM;
3019 // XXX VLAN_CAPABILITIES(ifp);
3020 break;
3021 default:
3022 error = ether_ioctl(ifp, cmd, data);
3023 break;
3024 }
3025
3026 return (error);
3027 }
3028
3029 static void
alc_mac_config(struct alc_softc * sc)3030 alc_mac_config(struct alc_softc *sc)
3031 {
3032 struct mii_data *mii;
3033 uint32_t reg;
3034
3035 mii = device_get_softc(sc->alc_miibus);
3036 reg = CSR_READ_4(sc, ALC_MAC_CFG);
3037 reg &= ~(MAC_CFG_FULL_DUPLEX | MAC_CFG_TX_FC | MAC_CFG_RX_FC |
3038 MAC_CFG_SPEED_MASK);
3039 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0 ||
3040 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151 ||
3041 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2 ||
3042 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2) {
3043 reg |= MAC_CFG_HASH_ALG_CRC32 | MAC_CFG_SPEED_MODE_SW;
3044 }
3045 /* Reprogram MAC with resolved speed/duplex. */
3046 switch (IFM_SUBTYPE(mii->mii_media_active)) {
3047 case IFM_10_T:
3048 case IFM_100_TX:
3049 reg |= MAC_CFG_SPEED_10_100;
3050 break;
3051 case IFM_1000_T:
3052 reg |= MAC_CFG_SPEED_1000;
3053 break;
3054 }
3055 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) {
3056 reg |= MAC_CFG_FULL_DUPLEX;
3057 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_TXPAUSE) != 0)
3058 reg |= MAC_CFG_TX_FC;
3059 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_RXPAUSE) != 0)
3060 reg |= MAC_CFG_RX_FC;
3061 }
3062 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
3063 }
3064
3065 static void
alc_stats_clear(struct alc_softc * sc)3066 alc_stats_clear(struct alc_softc *sc)
3067 {
3068 struct smb sb, *smb;
3069 uint32_t *reg;
3070 int i;
3071
3072 if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0) {
3073 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag,
3074 sc->alc_cdata.alc_smb_map,
3075 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
3076 smb = sc->alc_rdata.alc_smb;
3077 /* Update done, clear. */
3078 smb->updated = 0;
3079 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag,
3080 sc->alc_cdata.alc_smb_map,
3081 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
3082 } else {
3083 for (reg = &sb.rx_frames, i = 0; reg <= &sb.rx_pkts_filtered;
3084 reg++) {
3085 CSR_READ_4(sc, ALC_RX_MIB_BASE + i);
3086 i += sizeof(uint32_t);
3087 }
3088 /* Read Tx statistics. */
3089 for (reg = &sb.tx_frames, i = 0; reg <= &sb.tx_mcast_bytes;
3090 reg++) {
3091 CSR_READ_4(sc, ALC_TX_MIB_BASE + i);
3092 i += sizeof(uint32_t);
3093 }
3094 }
3095 }
3096
3097 static void
alc_stats_update(struct alc_softc * sc)3098 alc_stats_update(struct alc_softc *sc)
3099 {
3100 struct alc_hw_stats *stat;
3101 struct smb sb, *smb;
3102 struct ifnet *ifp;
3103 uint32_t *reg;
3104 int i;
3105
3106 ifp = sc->alc_ifp;
3107 stat = &sc->alc_stats;
3108 if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0) {
3109 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag,
3110 sc->alc_cdata.alc_smb_map,
3111 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
3112 smb = sc->alc_rdata.alc_smb;
3113 if (smb->updated == 0)
3114 return;
3115 } else {
3116 smb = &sb;
3117 /* Read Rx statistics. */
3118 for (reg = &sb.rx_frames, i = 0; reg <= &sb.rx_pkts_filtered;
3119 reg++) {
3120 *reg = CSR_READ_4(sc, ALC_RX_MIB_BASE + i);
3121 i += sizeof(uint32_t);
3122 }
3123 /* Read Tx statistics. */
3124 for (reg = &sb.tx_frames, i = 0; reg <= &sb.tx_mcast_bytes;
3125 reg++) {
3126 *reg = CSR_READ_4(sc, ALC_TX_MIB_BASE + i);
3127 i += sizeof(uint32_t);
3128 }
3129 }
3130
3131 /* Rx stats. */
3132 stat->rx_frames += smb->rx_frames;
3133 stat->rx_bcast_frames += smb->rx_bcast_frames;
3134 stat->rx_mcast_frames += smb->rx_mcast_frames;
3135 stat->rx_pause_frames += smb->rx_pause_frames;
3136 stat->rx_control_frames += smb->rx_control_frames;
3137 stat->rx_crcerrs += smb->rx_crcerrs;
3138 stat->rx_lenerrs += smb->rx_lenerrs;
3139 stat->rx_bytes += smb->rx_bytes;
3140 stat->rx_runts += smb->rx_runts;
3141 stat->rx_fragments += smb->rx_fragments;
3142 stat->rx_pkts_64 += smb->rx_pkts_64;
3143 stat->rx_pkts_65_127 += smb->rx_pkts_65_127;
3144 stat->rx_pkts_128_255 += smb->rx_pkts_128_255;
3145 stat->rx_pkts_256_511 += smb->rx_pkts_256_511;
3146 stat->rx_pkts_512_1023 += smb->rx_pkts_512_1023;
3147 stat->rx_pkts_1024_1518 += smb->rx_pkts_1024_1518;
3148 stat->rx_pkts_1519_max += smb->rx_pkts_1519_max;
3149 stat->rx_pkts_truncated += smb->rx_pkts_truncated;
3150 stat->rx_fifo_oflows += smb->rx_fifo_oflows;
3151 stat->rx_rrs_errs += smb->rx_rrs_errs;
3152 stat->rx_alignerrs += smb->rx_alignerrs;
3153 stat->rx_bcast_bytes += smb->rx_bcast_bytes;
3154 stat->rx_mcast_bytes += smb->rx_mcast_bytes;
3155 stat->rx_pkts_filtered += smb->rx_pkts_filtered;
3156
3157 /* Tx stats. */
3158 stat->tx_frames += smb->tx_frames;
3159 stat->tx_bcast_frames += smb->tx_bcast_frames;
3160 stat->tx_mcast_frames += smb->tx_mcast_frames;
3161 stat->tx_pause_frames += smb->tx_pause_frames;
3162 stat->tx_excess_defer += smb->tx_excess_defer;
3163 stat->tx_control_frames += smb->tx_control_frames;
3164 stat->tx_deferred += smb->tx_deferred;
3165 stat->tx_bytes += smb->tx_bytes;
3166 stat->tx_pkts_64 += smb->tx_pkts_64;
3167 stat->tx_pkts_65_127 += smb->tx_pkts_65_127;
3168 stat->tx_pkts_128_255 += smb->tx_pkts_128_255;
3169 stat->tx_pkts_256_511 += smb->tx_pkts_256_511;
3170 stat->tx_pkts_512_1023 += smb->tx_pkts_512_1023;
3171 stat->tx_pkts_1024_1518 += smb->tx_pkts_1024_1518;
3172 stat->tx_pkts_1519_max += smb->tx_pkts_1519_max;
3173 stat->tx_single_colls += smb->tx_single_colls;
3174 stat->tx_multi_colls += smb->tx_multi_colls;
3175 stat->tx_late_colls += smb->tx_late_colls;
3176 stat->tx_excess_colls += smb->tx_excess_colls;
3177 stat->tx_underrun += smb->tx_underrun;
3178 stat->tx_desc_underrun += smb->tx_desc_underrun;
3179 stat->tx_lenerrs += smb->tx_lenerrs;
3180 stat->tx_pkts_truncated += smb->tx_pkts_truncated;
3181 stat->tx_bcast_bytes += smb->tx_bcast_bytes;
3182 stat->tx_mcast_bytes += smb->tx_mcast_bytes;
3183
3184 /* Update counters in ifnet. */
3185 IFNET_STAT_INC(ifp, opackets, smb->tx_frames);
3186
3187 IFNET_STAT_INC(ifp, collisions, smb->tx_single_colls +
3188 smb->tx_multi_colls * 2 + smb->tx_late_colls +
3189 smb->tx_excess_colls * HDPX_CFG_RETRY_DEFAULT);
3190
3191 IFNET_STAT_INC(ifp, oerrors,
3192 smb->tx_excess_colls + smb->tx_late_colls + smb->tx_underrun);
3193
3194 IFNET_STAT_INC(ifp, ipackets, smb->rx_frames);
3195
3196 IFNET_STAT_INC(ifp, ierrors, smb->rx_crcerrs + smb->rx_lenerrs +
3197 smb->rx_runts + smb->rx_pkts_truncated +
3198 smb->rx_fifo_oflows + smb->rx_rrs_errs +
3199 smb->rx_alignerrs);
3200
3201 if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0) {
3202 /* Update done, clear. */
3203 smb->updated = 0;
3204 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag,
3205 sc->alc_cdata.alc_smb_map,
3206 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
3207 }
3208 }
3209
3210 static void
alc_intr(void * arg)3211 alc_intr(void *arg)
3212 {
3213 struct alc_softc *sc = arg;
3214 struct ifnet *ifp = &sc->arpcom.ac_if;
3215 uint32_t status;
3216
3217 ASSERT_SERIALIZED(ifp->if_serializer);
3218
3219 status = CSR_READ_4(sc, ALC_INTR_STATUS);
3220 if ((status & ALC_INTRS) == 0)
3221 return;
3222
3223 /* Acknowledge interrupts and disable interrupts. */
3224 CSR_WRITE_4(sc, ALC_INTR_STATUS, status | INTR_DIS_INT);
3225
3226 if (ifp->if_flags & IFF_RUNNING) {
3227 if (status & INTR_RX_PKT) {
3228 if (alc_rxintr(sc)) {
3229 alc_init(sc);
3230 return;
3231 }
3232 }
3233 if (status & (INTR_DMA_RD_TO_RST | INTR_DMA_WR_TO_RST |
3234 INTR_TXQ_TO_RST)) {
3235 if (status & INTR_DMA_RD_TO_RST) {
3236 if_printf(ifp,
3237 "DMA read error! -- resetting\n");
3238 }
3239 if (status & INTR_DMA_WR_TO_RST) {
3240 if_printf(ifp,
3241 "DMA write error! -- resetting\n");
3242 }
3243 if (status & INTR_TXQ_TO_RST)
3244 if_printf(ifp, "TxQ reset! -- resetting\n");
3245 alc_init(sc);
3246 return;
3247 }
3248 if (!ifq_is_empty(&ifp->if_snd))
3249 if_devstart(ifp);
3250
3251 /* Re-enable interrupts */
3252 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0x7FFFFFFF);
3253 }
3254 }
3255
3256 static void
alc_txeof(struct alc_softc * sc)3257 alc_txeof(struct alc_softc *sc)
3258 {
3259 struct ifnet *ifp;
3260 struct alc_txdesc *txd;
3261 uint32_t cons, prod;
3262 int prog;
3263
3264 ifp = sc->alc_ifp;
3265
3266 if (sc->alc_cdata.alc_tx_cnt == 0)
3267 return;
3268 bus_dmamap_sync(sc->alc_cdata.alc_tx_ring_tag,
3269 sc->alc_cdata.alc_tx_ring_map, BUS_DMASYNC_POSTWRITE);
3270 if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0) {
3271 bus_dmamap_sync(sc->alc_cdata.alc_cmb_tag,
3272 sc->alc_cdata.alc_cmb_map, BUS_DMASYNC_POSTREAD);
3273 prod = sc->alc_rdata.alc_cmb->cons;
3274 } else {
3275 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
3276 prod = CSR_READ_2(sc, ALC_MBOX_TD_PRI0_CONS_IDX);
3277 else {
3278 prod = CSR_READ_4(sc, ALC_MBOX_TD_CONS_IDX);
3279 /* Assume we're using normal Tx priority queue. */
3280 prod = (prod & MBOX_TD_CONS_LO_IDX_MASK) >>
3281 MBOX_TD_CONS_LO_IDX_SHIFT;
3282 }
3283 }
3284 cons = sc->alc_cdata.alc_tx_cons;
3285 /*
3286 * Go through our Tx list and free mbufs for those
3287 * frames which have been transmitted.
3288 */
3289 for (prog = 0; cons != prod; prog++,
3290 ALC_DESC_INC(cons, ALC_TX_RING_CNT)) {
3291 if (sc->alc_cdata.alc_tx_cnt <= 0)
3292 break;
3293 prog++;
3294 ifq_clr_oactive(&ifp->if_snd);
3295 sc->alc_cdata.alc_tx_cnt--;
3296 txd = &sc->alc_cdata.alc_txdesc[cons];
3297 if (txd->tx_m != NULL) {
3298 /* Reclaim transmitted mbufs. */
3299 bus_dmamap_sync(sc->alc_cdata.alc_tx_tag,
3300 txd->tx_dmamap, BUS_DMASYNC_POSTWRITE);
3301 bus_dmamap_unload(sc->alc_cdata.alc_tx_tag,
3302 txd->tx_dmamap);
3303 m_freem(txd->tx_m);
3304 txd->tx_m = NULL;
3305 }
3306 }
3307
3308 if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0)
3309 bus_dmamap_sync(sc->alc_cdata.alc_cmb_tag,
3310 sc->alc_cdata.alc_cmb_map, BUS_DMASYNC_PREREAD);
3311 sc->alc_cdata.alc_tx_cons = cons;
3312 /*
3313 * Unarm watchdog timer only when there is no pending
3314 * frames in Tx queue.
3315 */
3316 if (sc->alc_cdata.alc_tx_cnt == 0)
3317 sc->alc_watchdog_timer = 0;
3318 }
3319
3320 static int
alc_newbuf(struct alc_softc * sc,struct alc_rxdesc * rxd,boolean_t wait)3321 alc_newbuf(struct alc_softc *sc, struct alc_rxdesc *rxd, boolean_t wait)
3322 {
3323 struct mbuf *m;
3324 bus_dma_segment_t segs[1];
3325 bus_dmamap_t map;
3326 int nsegs;
3327 int error;
3328
3329 m = m_getcl(wait ? M_WAITOK : M_NOWAIT, MT_DATA, M_PKTHDR);
3330 if (m == NULL)
3331 return (ENOBUFS);
3332 m->m_len = m->m_pkthdr.len = MCLBYTES;
3333 #ifdef foo
3334 /* Hardware require 4 bytes align */
3335 m_adj(m, ETHER_ALIGN);
3336 #endif
3337
3338 error = bus_dmamap_load_mbuf_segment(
3339 sc->alc_cdata.alc_rx_tag,
3340 sc->alc_cdata.alc_rx_sparemap,
3341 m, segs, 1, &nsegs, BUS_DMA_NOWAIT);
3342 if (error) {
3343 m_freem(m);
3344 return (ENOBUFS);
3345 }
3346 KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs));
3347
3348 if (rxd->rx_m != NULL) {
3349 bus_dmamap_sync(sc->alc_cdata.alc_rx_tag, rxd->rx_dmamap,
3350 BUS_DMASYNC_POSTREAD);
3351 bus_dmamap_unload(sc->alc_cdata.alc_rx_tag, rxd->rx_dmamap);
3352 }
3353 map = rxd->rx_dmamap;
3354 rxd->rx_dmamap = sc->alc_cdata.alc_rx_sparemap;
3355 sc->alc_cdata.alc_rx_sparemap = map;
3356 bus_dmamap_sync(sc->alc_cdata.alc_rx_tag, rxd->rx_dmamap,
3357 BUS_DMASYNC_PREREAD);
3358 rxd->rx_m = m;
3359 rxd->rx_desc->addr = htole64(segs[0].ds_addr);
3360 return (0);
3361 }
3362
3363 static int
alc_rxintr(struct alc_softc * sc)3364 alc_rxintr(struct alc_softc *sc)
3365 {
3366 struct ifnet *ifp;
3367 struct rx_rdesc *rrd;
3368 uint32_t nsegs, status;
3369 int rr_cons, prog;
3370
3371 bus_dmamap_sync(sc->alc_cdata.alc_rr_ring_tag,
3372 sc->alc_cdata.alc_rr_ring_map,
3373 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
3374 bus_dmamap_sync(sc->alc_cdata.alc_rx_ring_tag,
3375 sc->alc_cdata.alc_rx_ring_map, BUS_DMASYNC_POSTWRITE);
3376 rr_cons = sc->alc_cdata.alc_rr_cons;
3377 ifp = sc->alc_ifp;
3378 for (prog = 0; (ifp->if_flags & IFF_RUNNING) != 0;) {
3379 rrd = &sc->alc_rdata.alc_rr_ring[rr_cons];
3380 status = le32toh(rrd->status);
3381 if ((status & RRD_VALID) == 0)
3382 break;
3383 nsegs = RRD_RD_CNT(le32toh(rrd->rdinfo));
3384 if (nsegs == 0) {
3385 /* This should not happen! */
3386 device_printf(sc->alc_dev,
3387 "unexpected segment count -- resetting\n");
3388 return (EIO);
3389 }
3390 alc_rxeof(sc, rrd);
3391 /* Clear Rx return status. */
3392 rrd->status = 0;
3393 ALC_DESC_INC(rr_cons, ALC_RR_RING_CNT);
3394 sc->alc_cdata.alc_rx_cons += nsegs;
3395 sc->alc_cdata.alc_rx_cons %= ALC_RR_RING_CNT;
3396 prog += nsegs;
3397 }
3398
3399 if (prog > 0) {
3400 /* Update the consumer index. */
3401 sc->alc_cdata.alc_rr_cons = rr_cons;
3402 /* Sync Rx return descriptors. */
3403 bus_dmamap_sync(sc->alc_cdata.alc_rr_ring_tag,
3404 sc->alc_cdata.alc_rr_ring_map,
3405 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
3406 /*
3407 * Sync updated Rx descriptors such that controller see
3408 * modified buffer addresses.
3409 */
3410 bus_dmamap_sync(sc->alc_cdata.alc_rx_ring_tag,
3411 sc->alc_cdata.alc_rx_ring_map, BUS_DMASYNC_PREWRITE);
3412 /*
3413 * Let controller know availability of new Rx buffers.
3414 * Since alc(4) use RXQ_CFG_RD_BURST_DEFAULT descriptors
3415 * it may be possible to update ALC_MBOX_RD0_PROD_IDX
3416 * only when Rx buffer pre-fetching is required. In
3417 * addition we already set ALC_RX_RD_FREE_THRESH to
3418 * RX_RD_FREE_THRESH_LO_DEFAULT descriptors. However
3419 * it still seems that pre-fetching needs more
3420 * experimentation.
3421 */
3422 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
3423 CSR_WRITE_2(sc, ALC_MBOX_RD0_PROD_IDX,
3424 (uint16_t)sc->alc_cdata.alc_rx_cons);
3425 else
3426 CSR_WRITE_4(sc, ALC_MBOX_RD0_PROD_IDX,
3427 sc->alc_cdata.alc_rx_cons);
3428 }
3429
3430 return 0;
3431 }
3432
3433 /* Receive a frame. */
3434 static void
alc_rxeof(struct alc_softc * sc,struct rx_rdesc * rrd)3435 alc_rxeof(struct alc_softc *sc, struct rx_rdesc *rrd)
3436 {
3437 struct alc_rxdesc *rxd;
3438 struct ifnet *ifp;
3439 struct mbuf *mp, *m;
3440 uint32_t rdinfo, status, vtag;
3441 int count, nsegs, rx_cons;
3442
3443 ifp = sc->alc_ifp;
3444 status = le32toh(rrd->status);
3445 rdinfo = le32toh(rrd->rdinfo);
3446 rx_cons = RRD_RD_IDX(rdinfo);
3447 nsegs = RRD_RD_CNT(rdinfo);
3448
3449 sc->alc_cdata.alc_rxlen = RRD_BYTES(status);
3450 if ((status & (RRD_ERR_SUM | RRD_ERR_LENGTH)) != 0) {
3451 /*
3452 * We want to pass the following frames to upper
3453 * layer regardless of error status of Rx return
3454 * ring.
3455 *
3456 * o IP/TCP/UDP checksum is bad.
3457 * o frame length and protocol specific length
3458 * does not match.
3459 *
3460 * Force network stack compute checksum for
3461 * errored frames.
3462 */
3463 status |= RRD_TCP_UDPCSUM_NOK | RRD_IPCSUM_NOK;
3464 if ((status & (RRD_ERR_CRC | RRD_ERR_ALIGN |
3465 RRD_ERR_TRUNC | RRD_ERR_RUNT)) != 0)
3466 return;
3467 }
3468
3469 for (count = 0; count < nsegs; count++,
3470 ALC_DESC_INC(rx_cons, ALC_RX_RING_CNT)) {
3471 rxd = &sc->alc_cdata.alc_rxdesc[rx_cons];
3472 mp = rxd->rx_m;
3473 /* Add a new receive buffer to the ring. */
3474 if (alc_newbuf(sc, rxd, FALSE) != 0) {
3475 IFNET_STAT_INC(ifp, iqdrops, 1);
3476 /* Reuse Rx buffers. */
3477 if (sc->alc_cdata.alc_rxhead != NULL)
3478 m_freem(sc->alc_cdata.alc_rxhead);
3479 break;
3480 }
3481
3482 /*
3483 * Assume we've received a full sized frame.
3484 * Actual size is fixed when we encounter the end of
3485 * multi-segmented frame.
3486 */
3487 mp->m_len = sc->alc_buf_size;
3488
3489 /* Chain received mbufs. */
3490 if (sc->alc_cdata.alc_rxhead == NULL) {
3491 sc->alc_cdata.alc_rxhead = mp;
3492 sc->alc_cdata.alc_rxtail = mp;
3493 } else {
3494 /*mp->m_flags &= ~M_PKTHDR;*/
3495 sc->alc_cdata.alc_rxprev_tail =
3496 sc->alc_cdata.alc_rxtail;
3497 sc->alc_cdata.alc_rxtail->m_next = mp;
3498 sc->alc_cdata.alc_rxtail = mp;
3499 }
3500
3501 if (count == nsegs - 1) {
3502 /* Last desc. for this frame. */
3503 m = sc->alc_cdata.alc_rxhead;
3504 /*m->m_flags |= M_PKTHDR;*/
3505
3506 /*
3507 * It seems that L1C/L2C controller has no way
3508 * to tell hardware to strip CRC bytes.
3509 */
3510 m->m_pkthdr.len =
3511 sc->alc_cdata.alc_rxlen - ETHER_CRC_LEN;
3512 if (nsegs > 1) {
3513 /* Set last mbuf size. */
3514 mp->m_len = sc->alc_cdata.alc_rxlen -
3515 (nsegs - 1) * sc->alc_buf_size;
3516 /* Remove the CRC bytes in chained mbufs. */
3517 if (mp->m_len <= ETHER_CRC_LEN) {
3518 sc->alc_cdata.alc_rxtail =
3519 sc->alc_cdata.alc_rxprev_tail;
3520 sc->alc_cdata.alc_rxtail->m_len -=
3521 (ETHER_CRC_LEN - mp->m_len);
3522 sc->alc_cdata.alc_rxtail->m_next = NULL;
3523 m_freem(mp);
3524 } else {
3525 mp->m_len -= ETHER_CRC_LEN;
3526 }
3527 } else
3528 m->m_len = m->m_pkthdr.len;
3529 m->m_pkthdr.rcvif = ifp;
3530 /*
3531 * Due to hardware bugs, Rx checksum offloading
3532 * was intentionally disabled.
3533 */
3534 if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) != 0 &&
3535 (status & RRD_VLAN_TAG) != 0) {
3536 vtag = RRD_VLAN(le32toh(rrd->vtag));
3537 m->m_pkthdr.ether_vlantag = ntohs(vtag);
3538 m->m_flags |= M_VLANTAG;
3539 }
3540
3541 /* Pass it on. */
3542 ifp->if_input(ifp, m, NULL, -1);
3543 }
3544 }
3545 /* Reset mbuf chains. */
3546 ALC_RXCHAIN_RESET(sc);
3547 }
3548
3549 static void
alc_tick(void * arg)3550 alc_tick(void *arg)
3551 {
3552 struct alc_softc *sc = arg;
3553 struct ifnet *ifp = &sc->arpcom.ac_if;
3554 struct mii_data *mii;
3555
3556 lwkt_serialize_enter(ifp->if_serializer);
3557
3558 mii = device_get_softc(sc->alc_miibus);
3559 mii_tick(mii);
3560 alc_stats_update(sc);
3561 /*
3562 * alc(4) does not rely on Tx completion interrupts to reclaim
3563 * transferred buffers. Instead Tx completion interrupts are
3564 * used to hint for scheduling Tx task. So it's necessary to
3565 * release transmitted buffers by kicking Tx completion
3566 * handler. This limits the maximum reclamation delay to a hz.
3567 */
3568 alc_txeof(sc);
3569 alc_watchdog(sc);
3570 callout_reset(&sc->alc_tick_ch, hz, alc_tick, sc);
3571
3572 #if 0
3573 /* poll for debugging */
3574 alc_intr(sc);
3575 #endif
3576
3577 lwkt_serialize_exit(ifp->if_serializer);
3578 }
3579
3580 static void
alc_osc_reset(struct alc_softc * sc)3581 alc_osc_reset(struct alc_softc *sc)
3582 {
3583 uint32_t reg;
3584
3585 reg = CSR_READ_4(sc, ALC_MISC3);
3586 reg &= ~MISC3_25M_BY_SW;
3587 reg |= MISC3_25M_NOTO_INTNL;
3588 CSR_WRITE_4(sc, ALC_MISC3, reg);
3589
3590 reg = CSR_READ_4(sc, ALC_MISC);
3591 if (AR816X_REV(sc->alc_rev) >= AR816X_REV_B0) {
3592 /*
3593 * Restore over-current protection default value.
3594 * This value could be reset by MAC reset.
3595 */
3596 reg &= ~MISC_PSW_OCP_MASK;
3597 reg |= (MISC_PSW_OCP_DEFAULT << MISC_PSW_OCP_SHIFT);
3598 reg &= ~MISC_INTNLOSC_OPEN;
3599 CSR_WRITE_4(sc, ALC_MISC, reg);
3600 CSR_WRITE_4(sc, ALC_MISC, reg | MISC_INTNLOSC_OPEN);
3601 reg = CSR_READ_4(sc, ALC_MISC2);
3602 reg &= ~MISC2_CALB_START;
3603 CSR_WRITE_4(sc, ALC_MISC2, reg);
3604 CSR_WRITE_4(sc, ALC_MISC2, reg | MISC2_CALB_START);
3605
3606 } else {
3607 reg &= ~MISC_INTNLOSC_OPEN;
3608 /* Disable isolate for revision A devices. */
3609 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1)
3610 reg &= ~MISC_ISO_ENB;
3611 CSR_WRITE_4(sc, ALC_MISC, reg | MISC_INTNLOSC_OPEN);
3612 CSR_WRITE_4(sc, ALC_MISC, reg);
3613 }
3614
3615 DELAY(20);
3616 }
3617
3618 static void
alc_reset(struct alc_softc * sc)3619 alc_reset(struct alc_softc *sc)
3620 {
3621 uint32_t pmcfg, reg;
3622 int i;
3623
3624 pmcfg = 0;
3625 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
3626 /* Reset workaround. */
3627 CSR_WRITE_4(sc, ALC_MBOX_RD0_PROD_IDX, 1);
3628 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1 &&
3629 (sc->alc_rev & 0x01) != 0) {
3630 /* Disable L0s/L1s before reset. */
3631 pmcfg = CSR_READ_4(sc, ALC_PM_CFG);
3632 if ((pmcfg & (PM_CFG_ASPM_L0S_ENB | PM_CFG_ASPM_L1_ENB))
3633 != 0) {
3634 pmcfg &= ~(PM_CFG_ASPM_L0S_ENB |
3635 PM_CFG_ASPM_L1_ENB);
3636 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg);
3637 }
3638 }
3639 }
3640 reg = CSR_READ_4(sc, ALC_MASTER_CFG);
3641 reg |= MASTER_OOB_DIS_OFF | MASTER_RESET;
3642 CSR_WRITE_4(sc, ALC_MASTER_CFG, reg);
3643
3644 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
3645 for (i = ALC_RESET_TIMEOUT; i > 0; i--) {
3646 DELAY(10);
3647 if (CSR_READ_4(sc, ALC_MBOX_RD0_PROD_IDX) == 0)
3648 break;
3649 }
3650 if (i == 0)
3651 device_printf(sc->alc_dev, "MAC reset timeout!\n");
3652 }
3653
3654 for (i = ALC_RESET_TIMEOUT; i > 0; i--) {
3655 DELAY(10);
3656 if ((CSR_READ_4(sc, ALC_MASTER_CFG) & MASTER_RESET) == 0)
3657 break;
3658 }
3659 if (i == 0)
3660 device_printf(sc->alc_dev, "master reset timeout!\n");
3661
3662 for (i = ALC_RESET_TIMEOUT; i > 0; i--) {
3663 reg = CSR_READ_4(sc, ALC_IDLE_STATUS);
3664 if ((reg & (IDLE_STATUS_RXMAC | IDLE_STATUS_TXMAC |
3665 IDLE_STATUS_RXQ | IDLE_STATUS_TXQ)) == 0)
3666 break;
3667 DELAY(10);
3668 }
3669
3670 if (i == 0)
3671 device_printf(sc->alc_dev, "reset timeout(0x%08x)!\n", reg);
3672
3673 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
3674 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1 &&
3675 (sc->alc_rev & 0x01) != 0) {
3676 reg = CSR_READ_4(sc, ALC_MASTER_CFG);
3677 reg |= MASTER_CLK_SEL_DIS;
3678 CSR_WRITE_4(sc, ALC_MASTER_CFG, reg);
3679 /* Restore L0s/L1s config. */
3680 if ((pmcfg & (PM_CFG_ASPM_L0S_ENB | PM_CFG_ASPM_L1_ENB))
3681 != 0)
3682 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg);
3683 }
3684
3685 alc_osc_reset(sc);
3686 reg = CSR_READ_4(sc, ALC_MISC3);
3687 reg &= ~MISC3_25M_BY_SW;
3688 reg |= MISC3_25M_NOTO_INTNL;
3689 CSR_WRITE_4(sc, ALC_MISC3, reg);
3690 reg = CSR_READ_4(sc, ALC_MISC);
3691 reg &= ~MISC_INTNLOSC_OPEN;
3692 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1)
3693 reg &= ~MISC_ISO_ENB;
3694 CSR_WRITE_4(sc, ALC_MISC, reg);
3695 DELAY(20);
3696 }
3697 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0 ||
3698 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B ||
3699 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2)
3700 CSR_WRITE_4(sc, ALC_SERDES_LOCK,
3701 CSR_READ_4(sc, ALC_SERDES_LOCK) | SERDES_MAC_CLK_SLOWDOWN |
3702 SERDES_PHY_CLK_SLOWDOWN);
3703 }
3704
3705 static void
alc_init(void * xsc)3706 alc_init(void *xsc)
3707 {
3708 struct alc_softc *sc = xsc;
3709 struct ifnet *ifp = &sc->arpcom.ac_if;
3710 struct mii_data *mii;
3711 uint8_t eaddr[ETHER_ADDR_LEN];
3712 bus_addr_t paddr;
3713 uint32_t reg, rxf_hi, rxf_lo;
3714
3715 ASSERT_SERIALIZED(ifp->if_serializer);
3716
3717 mii = device_get_softc(sc->alc_miibus);
3718
3719 /*
3720 * Cancel any pending I/O.
3721 */
3722 alc_stop(sc);
3723 /*
3724 * Reset the chip to a known state.
3725 */
3726 alc_reset(sc);
3727
3728 /* Initialize Rx descriptors. */
3729 if (alc_init_rx_ring(sc) != 0) {
3730 device_printf(sc->alc_dev, "no memory for Rx buffers.\n");
3731 alc_stop(sc);
3732 return;
3733 }
3734 alc_init_rr_ring(sc);
3735 alc_init_tx_ring(sc);
3736 alc_init_cmb(sc);
3737 alc_init_smb(sc);
3738
3739 /* Enable all clocks. */
3740 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
3741 CSR_WRITE_4(sc, ALC_CLK_GATING_CFG, CLK_GATING_DMAW_ENB |
3742 CLK_GATING_DMAR_ENB | CLK_GATING_TXQ_ENB |
3743 CLK_GATING_RXQ_ENB | CLK_GATING_TXMAC_ENB |
3744 CLK_GATING_RXMAC_ENB);
3745 if (AR816X_REV(sc->alc_rev) >= AR816X_REV_B0)
3746 CSR_WRITE_4(sc, ALC_IDLE_DECISN_TIMER,
3747 IDLE_DECISN_TIMER_DEFAULT_1MS);
3748 } else
3749 CSR_WRITE_4(sc, ALC_CLK_GATING_CFG, 0);
3750
3751 /* Reprogram the station address. */
3752 bcopy(IF_LLADDR(ifp), eaddr, ETHER_ADDR_LEN);
3753 CSR_WRITE_4(sc, ALC_PAR0,
3754 eaddr[2] << 24 | eaddr[3] << 16 | eaddr[4] << 8 | eaddr[5]);
3755 CSR_WRITE_4(sc, ALC_PAR1, eaddr[0] << 8 | eaddr[1]);
3756 /*
3757 * Clear WOL status and disable all WOL feature as WOL
3758 * would interfere Rx operation under normal environments.
3759 */
3760 CSR_READ_4(sc, ALC_WOL_CFG);
3761 CSR_WRITE_4(sc, ALC_WOL_CFG, 0);
3762 /* Set Tx descriptor base addresses. */
3763 paddr = sc->alc_rdata.alc_tx_ring_paddr;
3764 CSR_WRITE_4(sc, ALC_TX_BASE_ADDR_HI, ALC_ADDR_HI(paddr));
3765 CSR_WRITE_4(sc, ALC_TDL_HEAD_ADDR_LO, ALC_ADDR_LO(paddr));
3766 /* We don't use high priority ring. */
3767 CSR_WRITE_4(sc, ALC_TDH_HEAD_ADDR_LO, 0);
3768 /* Set Tx descriptor counter. */
3769 CSR_WRITE_4(sc, ALC_TD_RING_CNT,
3770 (ALC_TX_RING_CNT << TD_RING_CNT_SHIFT) & TD_RING_CNT_MASK);
3771 /* Set Rx descriptor base addresses. */
3772 paddr = sc->alc_rdata.alc_rx_ring_paddr;
3773 CSR_WRITE_4(sc, ALC_RX_BASE_ADDR_HI, ALC_ADDR_HI(paddr));
3774 CSR_WRITE_4(sc, ALC_RD0_HEAD_ADDR_LO, ALC_ADDR_LO(paddr));
3775 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
3776 /* We use one Rx ring. */
3777 CSR_WRITE_4(sc, ALC_RD1_HEAD_ADDR_LO, 0);
3778 CSR_WRITE_4(sc, ALC_RD2_HEAD_ADDR_LO, 0);
3779 CSR_WRITE_4(sc, ALC_RD3_HEAD_ADDR_LO, 0);
3780 }
3781 /* Set Rx descriptor counter. */
3782 CSR_WRITE_4(sc, ALC_RD_RING_CNT,
3783 (ALC_RX_RING_CNT << RD_RING_CNT_SHIFT) & RD_RING_CNT_MASK);
3784
3785 /*
3786 * Let hardware split jumbo frames into alc_max_buf_sized chunks.
3787 * if it do not fit the buffer size. Rx return descriptor holds
3788 * a counter that indicates how many fragments were made by the
3789 * hardware. The buffer size should be multiple of 8 bytes.
3790 * Since hardware has limit on the size of buffer size, always
3791 * use the maximum value.
3792 * For strict-alignment architectures make sure to reduce buffer
3793 * size by 8 bytes to make room for alignment fixup.
3794 */
3795 sc->alc_buf_size = RX_BUF_SIZE_MAX;
3796 CSR_WRITE_4(sc, ALC_RX_BUF_SIZE, sc->alc_buf_size);
3797
3798 paddr = sc->alc_rdata.alc_rr_ring_paddr;
3799 /* Set Rx return descriptor base addresses. */
3800 CSR_WRITE_4(sc, ALC_RRD0_HEAD_ADDR_LO, ALC_ADDR_LO(paddr));
3801 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
3802 /* We use one Rx return ring. */
3803 CSR_WRITE_4(sc, ALC_RRD1_HEAD_ADDR_LO, 0);
3804 CSR_WRITE_4(sc, ALC_RRD2_HEAD_ADDR_LO, 0);
3805 CSR_WRITE_4(sc, ALC_RRD3_HEAD_ADDR_LO, 0);
3806 }
3807 /* Set Rx return descriptor counter. */
3808 CSR_WRITE_4(sc, ALC_RRD_RING_CNT,
3809 (ALC_RR_RING_CNT << RRD_RING_CNT_SHIFT) & RRD_RING_CNT_MASK);
3810 paddr = sc->alc_rdata.alc_cmb_paddr;
3811 CSR_WRITE_4(sc, ALC_CMB_BASE_ADDR_LO, ALC_ADDR_LO(paddr));
3812 paddr = sc->alc_rdata.alc_smb_paddr;
3813 CSR_WRITE_4(sc, ALC_SMB_BASE_ADDR_HI, ALC_ADDR_HI(paddr));
3814 CSR_WRITE_4(sc, ALC_SMB_BASE_ADDR_LO, ALC_ADDR_LO(paddr));
3815
3816 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B) {
3817 /* Reconfigure SRAM - Vendor magic. */
3818 CSR_WRITE_4(sc, ALC_SRAM_RX_FIFO_LEN, 0x000002A0);
3819 CSR_WRITE_4(sc, ALC_SRAM_TX_FIFO_LEN, 0x00000100);
3820 CSR_WRITE_4(sc, ALC_SRAM_RX_FIFO_ADDR, 0x029F0000);
3821 CSR_WRITE_4(sc, ALC_SRAM_RD0_ADDR, 0x02BF02A0);
3822 CSR_WRITE_4(sc, ALC_SRAM_TX_FIFO_ADDR, 0x03BF02C0);
3823 CSR_WRITE_4(sc, ALC_SRAM_TD_ADDR, 0x03DF03C0);
3824 CSR_WRITE_4(sc, ALC_TXF_WATER_MARK, 0x00000000);
3825 CSR_WRITE_4(sc, ALC_RD_DMA_CFG, 0x00000000);
3826 }
3827
3828 /* Tell hardware that we're ready to load DMA blocks. */
3829 CSR_WRITE_4(sc, ALC_DMA_BLOCK, DMA_BLOCK_LOAD);
3830
3831 /* Configure interrupt moderation timer. */
3832 reg = ALC_USECS(sc->alc_int_rx_mod) << IM_TIMER_RX_SHIFT;
3833 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0)
3834 reg |= ALC_USECS(sc->alc_int_tx_mod) << IM_TIMER_TX_SHIFT;
3835 CSR_WRITE_4(sc, ALC_IM_TIMER, reg);
3836 /*
3837 * We don't want to automatic interrupt clear as task queue
3838 * for the interrupt should know interrupt status.
3839 */
3840 reg = CSR_READ_4(sc, ALC_MASTER_CFG);
3841 reg &= ~(MASTER_IM_RX_TIMER_ENB | MASTER_IM_TX_TIMER_ENB);
3842 reg |= MASTER_SA_TIMER_ENB;
3843 if (ALC_USECS(sc->alc_int_rx_mod) != 0)
3844 reg |= MASTER_IM_RX_TIMER_ENB;
3845 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0 &&
3846 ALC_USECS(sc->alc_int_tx_mod) != 0)
3847 reg |= MASTER_IM_TX_TIMER_ENB;
3848 CSR_WRITE_4(sc, ALC_MASTER_CFG, reg);
3849 /*
3850 * Disable interrupt re-trigger timer. We don't want automatic
3851 * re-triggering of un-ACKed interrupts.
3852 */
3853 CSR_WRITE_4(sc, ALC_INTR_RETRIG_TIMER, ALC_USECS(0));
3854 /* Configure CMB. */
3855 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
3856 CSR_WRITE_4(sc, ALC_CMB_TD_THRESH, ALC_TX_RING_CNT / 3);
3857 CSR_WRITE_4(sc, ALC_CMB_TX_TIMER,
3858 ALC_USECS(sc->alc_int_tx_mod));
3859 } else {
3860 if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0) {
3861 CSR_WRITE_4(sc, ALC_CMB_TD_THRESH, 4);
3862 CSR_WRITE_4(sc, ALC_CMB_TX_TIMER, ALC_USECS(5000));
3863 } else
3864 CSR_WRITE_4(sc, ALC_CMB_TX_TIMER, ALC_USECS(0));
3865 }
3866
3867 /*
3868 * Hardware can be configured to issue SMB interrupt based
3869 * on programmed interval. Since there is a callout that is
3870 * invoked for every hz in driver we use that instead of
3871 * relying on periodic SMB interrupt.
3872 */
3873 CSR_WRITE_4(sc, ALC_SMB_STAT_TIMER, ALC_USECS(0));
3874 /* Clear MAC statistics. */
3875 alc_stats_clear(sc);
3876
3877 /*
3878 * Always use maximum frame size that controller can support.
3879 * Otherwise received frames that has larger frame length
3880 * than alc(4) MTU would be silently dropped in hardware. This
3881 * would make path-MTU discovery hard as sender wouldn't get
3882 * any responses from receiver. alc(4) supports
3883 * multi-fragmented frames on Rx path so it has no issue on
3884 * assembling fragmented frames. Using maximum frame size also
3885 * removes the need to reinitialize hardware when interface
3886 * MTU configuration was changed.
3887 *
3888 * Be conservative in what you do, be liberal in what you
3889 * accept from others - RFC 793.
3890 */
3891 CSR_WRITE_4(sc, ALC_FRAME_SIZE, sc->alc_ident->max_framelen);
3892
3893 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
3894 /* Disable header split(?) */
3895 CSR_WRITE_4(sc, ALC_HDS_CFG, 0);
3896
3897 /* Configure IPG/IFG parameters. */
3898 CSR_WRITE_4(sc, ALC_IPG_IFG_CFG,
3899 ((IPG_IFG_IPGT_DEFAULT << IPG_IFG_IPGT_SHIFT) &
3900 IPG_IFG_IPGT_MASK) |
3901 ((IPG_IFG_MIFG_DEFAULT << IPG_IFG_MIFG_SHIFT) &
3902 IPG_IFG_MIFG_MASK) |
3903 ((IPG_IFG_IPG1_DEFAULT << IPG_IFG_IPG1_SHIFT) &
3904 IPG_IFG_IPG1_MASK) |
3905 ((IPG_IFG_IPG2_DEFAULT << IPG_IFG_IPG2_SHIFT) &
3906 IPG_IFG_IPG2_MASK));
3907 /* Set parameters for half-duplex media. */
3908 CSR_WRITE_4(sc, ALC_HDPX_CFG,
3909 ((HDPX_CFG_LCOL_DEFAULT << HDPX_CFG_LCOL_SHIFT) &
3910 HDPX_CFG_LCOL_MASK) |
3911 ((HDPX_CFG_RETRY_DEFAULT << HDPX_CFG_RETRY_SHIFT) &
3912 HDPX_CFG_RETRY_MASK) | HDPX_CFG_EXC_DEF_EN |
3913 ((HDPX_CFG_ABEBT_DEFAULT << HDPX_CFG_ABEBT_SHIFT) &
3914 HDPX_CFG_ABEBT_MASK) |
3915 ((HDPX_CFG_JAMIPG_DEFAULT << HDPX_CFG_JAMIPG_SHIFT) &
3916 HDPX_CFG_JAMIPG_MASK));
3917 }
3918
3919 /*
3920 * Set TSO/checksum offload threshold. For frames that is
3921 * larger than this threshold, hardware wouldn't do
3922 * TSO/checksum offloading.
3923 */
3924 reg = (sc->alc_ident->max_framelen >> TSO_OFFLOAD_THRESH_UNIT_SHIFT) &
3925 TSO_OFFLOAD_THRESH_MASK;
3926 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
3927 reg |= TSO_OFFLOAD_ERRLGPKT_DROP_ENB;
3928 CSR_WRITE_4(sc, ALC_TSO_OFFLOAD_THRESH, reg);
3929 /* Configure TxQ. */
3930 reg = (alc_dma_burst[sc->alc_dma_rd_burst] <<
3931 TXQ_CFG_TX_FIFO_BURST_SHIFT) & TXQ_CFG_TX_FIFO_BURST_MASK;
3932 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B ||
3933 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2) {
3934 reg >>= 1;
3935 }
3936 reg |= (TXQ_CFG_TD_BURST_DEFAULT << TXQ_CFG_TD_BURST_SHIFT) &
3937 TXQ_CFG_TD_BURST_MASK;
3938 reg |= TXQ_CFG_IP_OPTION_ENB | TXQ_CFG_8023_ENB;
3939 CSR_WRITE_4(sc, ALC_TXQ_CFG, reg | TXQ_CFG_ENHANCED_MODE);
3940
3941 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
3942 reg = (TXQ_CFG_TD_BURST_DEFAULT << HQTD_CFG_Q1_BURST_SHIFT |
3943 TXQ_CFG_TD_BURST_DEFAULT << HQTD_CFG_Q2_BURST_SHIFT |
3944 TXQ_CFG_TD_BURST_DEFAULT << HQTD_CFG_Q3_BURST_SHIFT |
3945 HQTD_CFG_BURST_ENB);
3946 CSR_WRITE_4(sc, ALC_HQTD_CFG, reg);
3947 reg = WRR_PRI_RESTRICT_NONE;
3948 reg |= (WRR_PRI_DEFAULT << WRR_PRI0_SHIFT |
3949 WRR_PRI_DEFAULT << WRR_PRI1_SHIFT |
3950 WRR_PRI_DEFAULT << WRR_PRI2_SHIFT |
3951 WRR_PRI_DEFAULT << WRR_PRI3_SHIFT);
3952 CSR_WRITE_4(sc, ALC_WRR, reg);
3953 } else {
3954 /* Configure Rx free descriptor pre-fetching. */
3955 CSR_WRITE_4(sc, ALC_RX_RD_FREE_THRESH,
3956 ((RX_RD_FREE_THRESH_HI_DEFAULT <<
3957 RX_RD_FREE_THRESH_HI_SHIFT) & RX_RD_FREE_THRESH_HI_MASK) |
3958 ((RX_RD_FREE_THRESH_LO_DEFAULT <<
3959 RX_RD_FREE_THRESH_LO_SHIFT) & RX_RD_FREE_THRESH_LO_MASK));
3960 }
3961
3962 /*
3963 * Configure flow control parameters.
3964 * XON : 80% of Rx FIFO
3965 * XOFF : 30% of Rx FIFO
3966 */
3967 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
3968 reg = CSR_READ_4(sc, ALC_SRAM_RX_FIFO_LEN);
3969 reg &= SRAM_RX_FIFO_LEN_MASK;
3970 reg *= 8;
3971 if (reg > 8 * 1024)
3972 reg -= RX_FIFO_PAUSE_816X_RSVD;
3973 else
3974 reg -= RX_BUF_SIZE_MAX;
3975 reg /= 8;
3976 CSR_WRITE_4(sc, ALC_RX_FIFO_PAUSE_THRESH,
3977 ((reg << RX_FIFO_PAUSE_THRESH_LO_SHIFT) &
3978 RX_FIFO_PAUSE_THRESH_LO_MASK) |
3979 (((RX_FIFO_PAUSE_816X_RSVD / 8) <<
3980 RX_FIFO_PAUSE_THRESH_HI_SHIFT) &
3981 RX_FIFO_PAUSE_THRESH_HI_MASK));
3982 } else if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8131 ||
3983 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8132) {
3984 reg = CSR_READ_4(sc, ALC_SRAM_RX_FIFO_LEN);
3985 rxf_hi = (reg * 8) / 10;
3986 rxf_lo = (reg * 3) / 10;
3987 CSR_WRITE_4(sc, ALC_RX_FIFO_PAUSE_THRESH,
3988 ((rxf_lo << RX_FIFO_PAUSE_THRESH_LO_SHIFT) &
3989 RX_FIFO_PAUSE_THRESH_LO_MASK) |
3990 ((rxf_hi << RX_FIFO_PAUSE_THRESH_HI_SHIFT) &
3991 RX_FIFO_PAUSE_THRESH_HI_MASK));
3992 }
3993
3994 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
3995 /* Disable RSS until I understand L1C/L2C's RSS logic. */
3996 CSR_WRITE_4(sc, ALC_RSS_IDT_TABLE0, 0);
3997 CSR_WRITE_4(sc, ALC_RSS_CPU, 0);
3998 }
3999
4000 /* Configure RxQ. */
4001 reg = (RXQ_CFG_RD_BURST_DEFAULT << RXQ_CFG_RD_BURST_SHIFT) &
4002 RXQ_CFG_RD_BURST_MASK;
4003 reg |= RXQ_CFG_RSS_MODE_DIS;
4004 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
4005 reg |= (RXQ_CFG_816X_IDT_TBL_SIZE_DEFAULT <<
4006 RXQ_CFG_816X_IDT_TBL_SIZE_SHIFT) &
4007 RXQ_CFG_816X_IDT_TBL_SIZE_MASK;
4008 if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0)
4009 reg |= RXQ_CFG_ASPM_THROUGHPUT_LIMIT_100M;
4010 } else {
4011 if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0 &&
4012 sc->alc_ident->deviceid != DEVICEID_ATHEROS_AR8151_V2)
4013 reg |= RXQ_CFG_ASPM_THROUGHPUT_LIMIT_100M;
4014 }
4015 CSR_WRITE_4(sc, ALC_RXQ_CFG, reg);
4016
4017 /* Configure DMA parameters. */
4018 reg = DMA_CFG_OUT_ORDER | DMA_CFG_RD_REQ_PRI;
4019 reg |= sc->alc_rcb;
4020 if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0)
4021 reg |= DMA_CFG_CMB_ENB;
4022 if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0)
4023 reg |= DMA_CFG_SMB_ENB;
4024 else
4025 reg |= DMA_CFG_SMB_DIS;
4026 reg |= (sc->alc_dma_rd_burst & DMA_CFG_RD_BURST_MASK) <<
4027 DMA_CFG_RD_BURST_SHIFT;
4028 reg |= (sc->alc_dma_wr_burst & DMA_CFG_WR_BURST_MASK) <<
4029 DMA_CFG_WR_BURST_SHIFT;
4030 reg |= (DMA_CFG_RD_DELAY_CNT_DEFAULT << DMA_CFG_RD_DELAY_CNT_SHIFT) &
4031 DMA_CFG_RD_DELAY_CNT_MASK;
4032 reg |= (DMA_CFG_WR_DELAY_CNT_DEFAULT << DMA_CFG_WR_DELAY_CNT_SHIFT) &
4033 DMA_CFG_WR_DELAY_CNT_MASK;
4034 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
4035 switch (AR816X_REV(sc->alc_rev)) {
4036 case AR816X_REV_A0:
4037 case AR816X_REV_A1:
4038 reg |= DMA_CFG_RD_CHNL_SEL_2;
4039 break;
4040 case AR816X_REV_B0:
4041 /* FALLTHROUGH */
4042 default:
4043 reg |= DMA_CFG_RD_CHNL_SEL_4;
4044 break;
4045 }
4046 }
4047 CSR_WRITE_4(sc, ALC_DMA_CFG, reg);
4048
4049 /*
4050 * Configure Tx/Rx MACs.
4051 * - Auto-padding for short frames.
4052 * - Enable CRC generation.
4053 * Actual reconfiguration of MAC for resolved speed/duplex
4054 * is followed after detection of link establishment.
4055 * AR813x/AR815x always does checksum computation regardless
4056 * of MAC_CFG_RXCSUM_ENB bit. Also the controller is known to
4057 * have bug in protocol field in Rx return structure so
4058 * these controllers can't handle fragmented frames. Disable
4059 * Rx checksum offloading until there is a newer controller
4060 * that has sane implementation.
4061 */
4062 reg = MAC_CFG_TX_CRC_ENB | MAC_CFG_TX_AUTO_PAD | MAC_CFG_FULL_DUPLEX |
4063 ((MAC_CFG_PREAMBLE_DEFAULT << MAC_CFG_PREAMBLE_SHIFT) &
4064 MAC_CFG_PREAMBLE_MASK);
4065 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0 ||
4066 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151 ||
4067 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2 ||
4068 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2) {
4069 reg |= MAC_CFG_HASH_ALG_CRC32 | MAC_CFG_SPEED_MODE_SW;
4070 }
4071 if ((sc->alc_flags & ALC_FLAG_FASTETHER) != 0)
4072 reg |= MAC_CFG_SPEED_10_100;
4073 else
4074 reg |= MAC_CFG_SPEED_1000;
4075 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
4076
4077 /* Set up the receive filter. */
4078 alc_rxfilter(sc);
4079 alc_rxvlan(sc);
4080
4081 /* Acknowledge all pending interrupts and clear it. */
4082 CSR_WRITE_4(sc, ALC_INTR_MASK, ALC_INTRS);
4083 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0xFFFFFFFF);
4084 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0);
4085
4086 ifp->if_flags |= IFF_RUNNING;
4087 ifq_clr_oactive(&ifp->if_snd);
4088
4089 sc->alc_flags &= ~ALC_FLAG_LINK;
4090 /* Switch to the current media. */
4091 /*mii_mediachg(mii);*/
4092 alc_mediachange_locked(sc);
4093
4094 callout_reset(&sc->alc_tick_ch, hz, alc_tick, sc);
4095
4096 }
4097
4098 static void
alc_stop(struct alc_softc * sc)4099 alc_stop(struct alc_softc *sc)
4100 {
4101 struct ifnet *ifp = &sc->arpcom.ac_if;
4102 struct alc_txdesc *txd;
4103 struct alc_rxdesc *rxd;
4104 uint32_t reg;
4105 int i;
4106
4107 ASSERT_SERIALIZED(ifp->if_serializer);
4108
4109 /*
4110 * Mark the interface down and cancel the watchdog timer.
4111 */
4112 ifp->if_flags &= ~IFF_RUNNING;
4113 ifq_clr_oactive(&ifp->if_snd);
4114 sc->alc_flags &= ~ALC_FLAG_LINK;
4115 callout_stop(&sc->alc_tick_ch);
4116 sc->alc_watchdog_timer = 0;
4117 alc_stats_update(sc);
4118 /* Disable interrupts. */
4119 CSR_WRITE_4(sc, ALC_INTR_MASK, 0);
4120 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0xFFFFFFFF);
4121 /* Disable DMA. */
4122 reg = CSR_READ_4(sc, ALC_DMA_CFG);
4123 reg &= ~(DMA_CFG_CMB_ENB | DMA_CFG_SMB_ENB);
4124 reg |= DMA_CFG_SMB_DIS;
4125 CSR_WRITE_4(sc, ALC_DMA_CFG, reg);
4126 DELAY(1000);
4127 /* Stop Rx/Tx MACs. */
4128 alc_stop_mac(sc);
4129 /* Disable interrupts which might be touched in taskq handler. */
4130 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0xFFFFFFFF);
4131
4132 /* Disable L0s/L1s */
4133 alc_aspm(sc, 0, IFM_UNKNOWN);
4134 /* Reclaim Rx buffers that have been processed. */
4135 if (sc->alc_cdata.alc_rxhead != NULL)
4136 m_freem(sc->alc_cdata.alc_rxhead);
4137 ALC_RXCHAIN_RESET(sc);
4138 /*
4139 * Free Tx/Rx mbufs still in the queues.
4140 */
4141 for (i = 0; i < ALC_RX_RING_CNT; i++) {
4142 rxd = &sc->alc_cdata.alc_rxdesc[i];
4143 if (rxd->rx_m != NULL) {
4144 bus_dmamap_sync(sc->alc_cdata.alc_rx_tag,
4145 rxd->rx_dmamap, BUS_DMASYNC_POSTREAD);
4146 bus_dmamap_unload(sc->alc_cdata.alc_rx_tag,
4147 rxd->rx_dmamap);
4148 m_freem(rxd->rx_m);
4149 rxd->rx_m = NULL;
4150 }
4151 }
4152 for (i = 0; i < ALC_TX_RING_CNT; i++) {
4153 txd = &sc->alc_cdata.alc_txdesc[i];
4154 if (txd->tx_m != NULL) {
4155 bus_dmamap_sync(sc->alc_cdata.alc_tx_tag,
4156 txd->tx_dmamap, BUS_DMASYNC_POSTWRITE);
4157 bus_dmamap_unload(sc->alc_cdata.alc_tx_tag,
4158 txd->tx_dmamap);
4159 m_freem(txd->tx_m);
4160 txd->tx_m = NULL;
4161 }
4162 }
4163 }
4164
4165 static void
alc_stop_mac(struct alc_softc * sc)4166 alc_stop_mac(struct alc_softc *sc)
4167 {
4168 uint32_t reg;
4169 int i;
4170
4171 alc_stop_queue(sc);
4172 /* Disable Rx/Tx MAC. */
4173 reg = CSR_READ_4(sc, ALC_MAC_CFG);
4174 if ((reg & (MAC_CFG_TX_ENB | MAC_CFG_RX_ENB)) != 0) {
4175 reg &= ~(MAC_CFG_TX_ENB | MAC_CFG_RX_ENB);
4176 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
4177 }
4178 for (i = ALC_TIMEOUT; i > 0; i--) {
4179 reg = CSR_READ_4(sc, ALC_IDLE_STATUS);
4180 if ((reg & (IDLE_STATUS_RXMAC | IDLE_STATUS_TXMAC)) == 0)
4181 break;
4182 DELAY(10);
4183 }
4184 if (i == 0)
4185 device_printf(sc->alc_dev,
4186 "could not disable Rx/Tx MAC(0x%08x)!\n", reg);
4187 }
4188
4189 static void
alc_start_queue(struct alc_softc * sc)4190 alc_start_queue(struct alc_softc *sc)
4191 {
4192 uint32_t qcfg[] = {
4193 0,
4194 RXQ_CFG_QUEUE0_ENB,
4195 RXQ_CFG_QUEUE0_ENB | RXQ_CFG_QUEUE1_ENB,
4196 RXQ_CFG_QUEUE0_ENB | RXQ_CFG_QUEUE1_ENB | RXQ_CFG_QUEUE2_ENB,
4197 RXQ_CFG_ENB
4198 };
4199 uint32_t cfg;
4200
4201 /* Enable RxQ. */
4202 cfg = CSR_READ_4(sc, ALC_RXQ_CFG);
4203 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
4204 cfg &= ~RXQ_CFG_ENB;
4205 cfg |= qcfg[1];
4206 } else
4207 cfg |= RXQ_CFG_QUEUE0_ENB;
4208 CSR_WRITE_4(sc, ALC_RXQ_CFG, cfg);
4209 /* Enable TxQ. */
4210 cfg = CSR_READ_4(sc, ALC_TXQ_CFG);
4211 cfg |= TXQ_CFG_ENB;
4212 CSR_WRITE_4(sc, ALC_TXQ_CFG, cfg);
4213 }
4214
4215 static void
alc_stop_queue(struct alc_softc * sc)4216 alc_stop_queue(struct alc_softc *sc)
4217 {
4218 uint32_t reg;
4219 int i;
4220
4221 /* Disable RxQ. */
4222 reg = CSR_READ_4(sc, ALC_RXQ_CFG);
4223 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
4224 if ((reg & RXQ_CFG_ENB) != 0) {
4225 reg &= ~RXQ_CFG_ENB;
4226 CSR_WRITE_4(sc, ALC_RXQ_CFG, reg);
4227 }
4228 } else {
4229 if ((reg & RXQ_CFG_QUEUE0_ENB) != 0) {
4230 reg &= ~RXQ_CFG_QUEUE0_ENB;
4231 CSR_WRITE_4(sc, ALC_RXQ_CFG, reg);
4232 }
4233 }
4234 /* Disable TxQ. */
4235 reg = CSR_READ_4(sc, ALC_TXQ_CFG);
4236 if ((reg & TXQ_CFG_ENB) != 0) {
4237 reg &= ~TXQ_CFG_ENB;
4238 CSR_WRITE_4(sc, ALC_TXQ_CFG, reg);
4239 }
4240 DELAY(40);
4241 for (i = ALC_TIMEOUT; i > 0; i--) {
4242 reg = CSR_READ_4(sc, ALC_IDLE_STATUS);
4243 if ((reg & (IDLE_STATUS_RXQ | IDLE_STATUS_TXQ)) == 0)
4244 break;
4245 DELAY(10);
4246 }
4247 if (i == 0)
4248 device_printf(sc->alc_dev,
4249 "could not disable RxQ/TxQ (0x%08x)!\n", reg);
4250 }
4251
4252 static void
alc_init_tx_ring(struct alc_softc * sc)4253 alc_init_tx_ring(struct alc_softc *sc)
4254 {
4255 struct alc_ring_data *rd;
4256 struct alc_txdesc *txd;
4257 int i;
4258
4259 sc->alc_cdata.alc_tx_prod = 0;
4260 sc->alc_cdata.alc_tx_cons = 0;
4261 sc->alc_cdata.alc_tx_cnt = 0;
4262
4263 rd = &sc->alc_rdata;
4264 bzero(rd->alc_tx_ring, ALC_TX_RING_SZ);
4265 for (i = 0; i < ALC_TX_RING_CNT; i++) {
4266 txd = &sc->alc_cdata.alc_txdesc[i];
4267 txd->tx_m = NULL;
4268 }
4269
4270 bus_dmamap_sync(sc->alc_cdata.alc_tx_ring_tag,
4271 sc->alc_cdata.alc_tx_ring_map, BUS_DMASYNC_PREWRITE);
4272 }
4273
4274 static int
alc_init_rx_ring(struct alc_softc * sc)4275 alc_init_rx_ring(struct alc_softc *sc)
4276 {
4277 struct alc_ring_data *rd;
4278 struct alc_rxdesc *rxd;
4279 int i;
4280
4281 sc->alc_cdata.alc_rx_cons = ALC_RX_RING_CNT - 1;
4282 rd = &sc->alc_rdata;
4283 bzero(rd->alc_rx_ring, ALC_RX_RING_SZ);
4284 for (i = 0; i < ALC_RX_RING_CNT; i++) {
4285 rxd = &sc->alc_cdata.alc_rxdesc[i];
4286 rxd->rx_m = NULL;
4287 rxd->rx_desc = &rd->alc_rx_ring[i];
4288 if (alc_newbuf(sc, rxd, TRUE) != 0)
4289 return (ENOBUFS);
4290 }
4291
4292 /*
4293 * Since controller does not update Rx descriptors, driver
4294 * does have to read Rx descriptors back so BUS_DMASYNC_PREWRITE
4295 * is enough to ensure coherence.
4296 */
4297 bus_dmamap_sync(sc->alc_cdata.alc_rx_ring_tag,
4298 sc->alc_cdata.alc_rx_ring_map, BUS_DMASYNC_PREWRITE);
4299 /* Let controller know availability of new Rx buffers. */
4300 CSR_WRITE_4(sc, ALC_MBOX_RD0_PROD_IDX, sc->alc_cdata.alc_rx_cons);
4301
4302 return (0);
4303 }
4304
4305 static void
alc_init_rr_ring(struct alc_softc * sc)4306 alc_init_rr_ring(struct alc_softc *sc)
4307 {
4308 struct alc_ring_data *rd;
4309
4310 sc->alc_cdata.alc_rr_cons = 0;
4311 ALC_RXCHAIN_RESET(sc);
4312
4313 rd = &sc->alc_rdata;
4314 bzero(rd->alc_rr_ring, ALC_RR_RING_SZ);
4315 bus_dmamap_sync(sc->alc_cdata.alc_rr_ring_tag,
4316 sc->alc_cdata.alc_rr_ring_map,
4317 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
4318 }
4319
4320 static void
alc_init_cmb(struct alc_softc * sc)4321 alc_init_cmb(struct alc_softc *sc)
4322 {
4323 struct alc_ring_data *rd;
4324
4325 rd = &sc->alc_rdata;
4326 bzero(rd->alc_cmb, ALC_CMB_SZ);
4327 bus_dmamap_sync(sc->alc_cdata.alc_cmb_tag, sc->alc_cdata.alc_cmb_map,
4328 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
4329 }
4330
4331 static void
alc_init_smb(struct alc_softc * sc)4332 alc_init_smb(struct alc_softc *sc)
4333 {
4334 struct alc_ring_data *rd;
4335
4336 rd = &sc->alc_rdata;
4337 bzero(rd->alc_smb, ALC_SMB_SZ);
4338 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag, sc->alc_cdata.alc_smb_map,
4339 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
4340 }
4341
4342 static void
alc_rxvlan(struct alc_softc * sc)4343 alc_rxvlan(struct alc_softc *sc)
4344 {
4345 struct ifnet *ifp;
4346 uint32_t reg;
4347
4348 ifp = sc->alc_ifp;
4349 reg = CSR_READ_4(sc, ALC_MAC_CFG);
4350 if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) != 0)
4351 reg |= MAC_CFG_VLAN_TAG_STRIP;
4352 else
4353 reg &= ~MAC_CFG_VLAN_TAG_STRIP;
4354 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
4355 }
4356
4357 static void
alc_rxfilter(struct alc_softc * sc)4358 alc_rxfilter(struct alc_softc *sc)
4359 {
4360 struct ifnet *ifp;
4361 struct ifmultiaddr *ifma;
4362 uint32_t crc;
4363 uint32_t mchash[2];
4364 uint32_t rxcfg;
4365
4366 ifp = sc->alc_ifp;
4367
4368 bzero(mchash, sizeof(mchash));
4369 rxcfg = CSR_READ_4(sc, ALC_MAC_CFG);
4370 rxcfg &= ~(MAC_CFG_ALLMULTI | MAC_CFG_BCAST | MAC_CFG_PROMISC);
4371 if ((ifp->if_flags & IFF_BROADCAST) != 0)
4372 rxcfg |= MAC_CFG_BCAST;
4373 if ((ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI)) != 0) {
4374 if ((ifp->if_flags & IFF_PROMISC) != 0)
4375 rxcfg |= MAC_CFG_PROMISC;
4376 if ((ifp->if_flags & IFF_ALLMULTI) != 0)
4377 rxcfg |= MAC_CFG_ALLMULTI;
4378 mchash[0] = 0xFFFFFFFF;
4379 mchash[1] = 0xFFFFFFFF;
4380 goto chipit;
4381 }
4382
4383 #if 0
4384 /* XXX */
4385 if_maddr_rlock(ifp);
4386 #endif
4387 TAILQ_FOREACH(ifma, &sc->alc_ifp->if_multiaddrs, ifma_link) {
4388 if (ifma->ifma_addr->sa_family != AF_LINK)
4389 continue;
4390 crc = ether_crc32_be(LLADDR((struct sockaddr_dl *)
4391 ifma->ifma_addr), ETHER_ADDR_LEN);
4392 mchash[crc >> 31] |= 1 << ((crc >> 26) & 0x1f);
4393 }
4394 #if 0
4395 /* XXX */
4396 if_maddr_runlock(ifp);
4397 #endif
4398
4399 chipit:
4400 CSR_WRITE_4(sc, ALC_MAR0, mchash[0]);
4401 CSR_WRITE_4(sc, ALC_MAR1, mchash[1]);
4402 CSR_WRITE_4(sc, ALC_MAC_CFG, rxcfg);
4403 }
4404
4405 static int
sysctl_hw_alc_proc_limit(SYSCTL_HANDLER_ARGS)4406 sysctl_hw_alc_proc_limit(SYSCTL_HANDLER_ARGS)
4407 {
4408 return (sysctl_int_range(oidp, arg1, arg2, req,
4409 ALC_PROC_MIN, ALC_PROC_MAX));
4410 }
4411
4412 static int
sysctl_hw_alc_int_mod(SYSCTL_HANDLER_ARGS)4413 sysctl_hw_alc_int_mod(SYSCTL_HANDLER_ARGS)
4414 {
4415
4416 return (sysctl_int_range(oidp, arg1, arg2, req,
4417 ALC_IM_TIMER_MIN, ALC_IM_TIMER_MAX));
4418 }
4419