2 * Copyright (c) 2009, Pyun YongHyeon <yongari@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice unmodified, this list of conditions, and the following
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.
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
27 * $FreeBSD: src/sys/dev/alc/if_alc.c,v 1.6 2009/09/29 23:03:16 yongari Exp $
31 /* Driver for Atheros AR8131/AR8132 PCIe Ethernet. */
33 #include <sys/param.h>
34 #include <sys/systm.h>
36 #include <sys/endian.h>
37 #include <sys/kernel.h>
39 #include <sys/malloc.h>
41 #include <sys/module.h>
42 #include <sys/spinlock.h>
44 #include <sys/queue.h>
45 #include <sys/socket.h>
46 #include <sys/sockio.h>
47 #include <sys/sysctl.h>
48 #include <sys/taskqueue.h>
52 #include <net/if_arp.h>
53 #include <net/ethernet.h>
54 #include <net/if_dl.h>
55 #include <net/if_llc.h>
56 #include <net/if_media.h>
57 #include <net/if_types.h>
58 #include <net/ifq_var.h>
59 #include <net/vlan/if_vlan_var.h>
60 #include <net/vlan/if_vlan_ether.h>
62 #include <netinet/in.h>
63 #include <netinet/in_systm.h>
64 #include <netinet/ip.h>
65 #include <netinet/tcp.h>
67 #include <dev/netif/mii_layer/mii.h>
68 #include <dev/netif/mii_layer/miivar.h>
70 #include <bus/pci/pcireg.h>
71 #include <bus/pci/pcivar.h>
73 #include <machine/atomic.h>
76 #include <machine/bus.h>
77 #include <machine/in_cksum.h>
80 #include "if_alcreg.h"
81 #include "if_alcvar.h"
83 /* "device miibus" required. See GENERIC if you get errors here. */
84 #include "miibus_if.h"
85 #undef ALC_USE_CUSTOM_CSUM
87 #ifdef ALC_USE_CUSTOM_CSUM
88 #define ALC_CSUM_FEATURES (CSUM_TCP | CSUM_UDP)
90 #define ALC_CSUM_FEATURES (CSUM_IP | CSUM_TCP | CSUM_UDP)
92 #ifndef IFCAP_VLAN_HWTSO
93 #define IFCAP_VLAN_HWTSO 0
96 MODULE_DEPEND(alc, pci, 1, 1, 1);
97 MODULE_DEPEND(alc, ether, 1, 1, 1);
98 MODULE_DEPEND(alc, miibus, 1, 1, 1);
101 static int msi_disable = 0;
102 static int msix_disable = 0;
103 TUNABLE_INT("hw.alc.msi_disable", &msi_disable);
104 TUNABLE_INT("hw.alc.msix_disable", &msix_disable);
107 * Devices supported by this driver.
110 static struct alc_ident alc_ident_table[] = {
111 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8131, 9 * 1024,
112 "Atheros AR8131 PCIe Gigabit Ethernet" },
113 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8132, 9 * 1024,
114 "Atheros AR8132 PCIe Fast Ethernet" },
115 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8151, 6 * 1024,
116 "Atheros AR8151 v1.0 PCIe Gigabit Ethernet" },
117 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8151_V2, 6 * 1024,
118 "Atheros AR8151 v2.0 PCIe Gigabit Ethernet" },
119 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8152_B, 6 * 1024,
120 "Atheros AR8152 v1.1 PCIe Fast Ethernet" },
121 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8152_B2, 6 * 1024,
122 "Atheros AR8152 v2.0 PCIe Fast Ethernet" },
126 static void alc_aspm(struct alc_softc *, int);
127 static int alc_attach(device_t);
128 static int alc_check_boundary(struct alc_softc *);
129 static int alc_detach(device_t);
130 static void alc_disable_l0s_l1(struct alc_softc *);
131 static int alc_dma_alloc(struct alc_softc *);
132 static void alc_dma_free(struct alc_softc *);
133 static void alc_dmamap_cb(void *, bus_dma_segment_t *, int, int);
134 static int alc_encap(struct alc_softc *, struct mbuf **);
135 static struct alc_ident *alc_find_ident(device_t);
136 #ifndef __NO_STRICT_ALIGNMENT
138 alc_fixup_rx(struct ifnet *, struct mbuf *);
140 static void alc_get_macaddr(struct alc_softc *);
141 static void alc_init(void *);
142 static void alc_init_cmb(struct alc_softc *);
143 static void alc_init_locked(struct alc_softc *);
144 static void alc_init_rr_ring(struct alc_softc *);
145 static int alc_init_rx_ring(struct alc_softc *);
146 static void alc_init_smb(struct alc_softc *);
147 static void alc_init_tx_ring(struct alc_softc *);
148 static void alc_int_task(void *, int);
149 static void alc_intr(void *);
150 static int alc_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *);
151 static void alc_mac_config(struct alc_softc *);
152 static int alc_miibus_readreg(device_t, int, int);
153 static void alc_miibus_statchg(device_t);
154 static int alc_miibus_writereg(device_t, int, int, int);
155 static int alc_mediachange(struct ifnet *);
156 static void alc_mediastatus(struct ifnet *, struct ifmediareq *);
157 static int alc_newbuf(struct alc_softc *, struct alc_rxdesc *);
158 static void alc_phy_down(struct alc_softc *);
159 static void alc_phy_reset(struct alc_softc *);
160 static int alc_probe(device_t);
161 static void alc_reset(struct alc_softc *);
162 static int alc_resume(device_t);
163 static void alc_rxeof(struct alc_softc *, struct rx_rdesc *);
164 static int alc_rxintr(struct alc_softc *, int);
165 static void alc_rxfilter(struct alc_softc *);
166 static void alc_rxvlan(struct alc_softc *);
168 static void alc_setlinkspeed(struct alc_softc *);
170 static void alc_setwol(struct alc_softc *);
172 static int alc_shutdown(device_t);
173 static void alc_start(struct ifnet *);
174 static void alc_start_queue(struct alc_softc *);
175 static void alc_stats_clear(struct alc_softc *);
176 static void alc_stats_update(struct alc_softc *);
177 static void alc_stop(struct alc_softc *);
178 static void alc_stop_mac(struct alc_softc *);
179 static void alc_stop_queue(struct alc_softc *);
180 static int alc_suspend(device_t);
181 static void alc_sysctl_node(struct alc_softc *);
182 static void alc_tick(void *);
183 static void alc_tx_task(void *, int);
184 static void alc_txeof(struct alc_softc *);
185 static void alc_watchdog(struct alc_softc *);
186 static int sysctl_hw_alc_proc_limit(SYSCTL_HANDLER_ARGS);
187 static int sysctl_hw_alc_int_mod(SYSCTL_HANDLER_ARGS);
189 static device_method_t alc_methods[] = {
190 /* Device interface. */
191 DEVMETHOD(device_probe, alc_probe),
192 DEVMETHOD(device_attach, alc_attach),
193 DEVMETHOD(device_detach, alc_detach),
194 DEVMETHOD(device_shutdown, alc_shutdown),
195 DEVMETHOD(device_suspend, alc_suspend),
196 DEVMETHOD(device_resume, alc_resume),
199 DEVMETHOD(miibus_readreg, alc_miibus_readreg),
200 DEVMETHOD(miibus_writereg, alc_miibus_writereg),
201 DEVMETHOD(miibus_statchg, alc_miibus_statchg),
206 static driver_t alc_driver = {
209 sizeof(struct alc_softc)
212 static devclass_t alc_devclass;
214 DRIVER_MODULE(alc, pci, alc_driver, alc_devclass, NULL, NULL);
215 DRIVER_MODULE(miibus, alc, miibus_driver, miibus_devclass, NULL, NULL);
217 static struct resource_spec alc_res_spec_mem[] = {
218 { SYS_RES_MEMORY, PCIR_BAR(0), RF_ACTIVE },
222 static struct resource_spec alc_irq_spec_legacy[] = {
223 { SYS_RES_IRQ, 0, RF_ACTIVE | RF_SHAREABLE },
227 static struct resource_spec alc_irq_spec_msi[] = {
228 { SYS_RES_IRQ, 1, RF_ACTIVE },
232 static struct resource_spec alc_irq_spec_msix[] = {
233 { SYS_RES_IRQ, 1, RF_ACTIVE },
237 static uint32_t alc_dma_burst[] = { 128, 256, 512, 1024, 2048, 4096, 0 };
240 alc_miibus_readreg(device_t dev, int phy, int reg)
242 struct alc_softc *sc;
246 sc = device_get_softc(dev);
248 if (phy != sc->alc_phyaddr)
252 * For AR8132 fast ethernet controller, do not report 1000baseT
253 * capability to mii(4). Even though AR8132 uses the same
254 * model/revision number of F1 gigabit PHY, the PHY has no
255 * ability to establish 1000baseT link.
257 if ((sc->alc_flags & ALC_FLAG_FASTETHER) != 0 &&
261 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_READ |
262 MDIO_SUP_PREAMBLE | MDIO_CLK_25_4 | MDIO_REG_ADDR(reg));
263 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
265 v = CSR_READ_4(sc, ALC_MDIO);
266 if ((v & (MDIO_OP_EXECUTE | MDIO_OP_BUSY)) == 0)
271 device_printf(sc->alc_dev, "phy read timeout : %d\n", reg);
275 return ((v & MDIO_DATA_MASK) >> MDIO_DATA_SHIFT);
279 alc_miibus_writereg(device_t dev, int phy, int reg, int val)
281 struct alc_softc *sc;
285 sc = device_get_softc(dev);
287 if (phy != sc->alc_phyaddr)
290 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_WRITE |
291 (val & MDIO_DATA_MASK) << MDIO_DATA_SHIFT |
292 MDIO_SUP_PREAMBLE | MDIO_CLK_25_4 | MDIO_REG_ADDR(reg));
293 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
295 v = CSR_READ_4(sc, ALC_MDIO);
296 if ((v & (MDIO_OP_EXECUTE | MDIO_OP_BUSY)) == 0)
301 device_printf(sc->alc_dev, "phy write timeout : %d\n", reg);
307 alc_miibus_statchg(device_t dev)
309 struct alc_softc *sc;
310 struct mii_data *mii;
314 sc = device_get_softc(dev);
316 mii = device_get_softc(sc->alc_miibus);
318 if (mii == NULL || ifp == NULL ||
319 (ifp->if_flags & IFF_RUNNING) == 0)
322 sc->alc_flags &= ~ALC_FLAG_LINK;
323 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) ==
324 (IFM_ACTIVE | IFM_AVALID)) {
325 switch (IFM_SUBTYPE(mii->mii_media_active)) {
328 sc->alc_flags |= ALC_FLAG_LINK;
331 if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0)
332 sc->alc_flags |= ALC_FLAG_LINK;
339 /* Stop Rx/Tx MACs. */
342 /* Program MACs with resolved speed/duplex/flow-control. */
343 if ((sc->alc_flags & ALC_FLAG_LINK) != 0) {
346 /* Re-enable Tx/Rx MACs. */
347 reg = CSR_READ_4(sc, ALC_MAC_CFG);
348 reg |= MAC_CFG_TX_ENB | MAC_CFG_RX_ENB;
349 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
351 alc_aspm(sc, IFM_SUBTYPE(mii->mii_media_active));
355 alc_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr)
357 struct alc_softc *sc;
358 struct mii_data *mii;
362 if ((ifp->if_flags & IFF_UP) == 0) {
366 mii = device_get_softc(sc->alc_miibus);
370 ifmr->ifm_status = mii->mii_media_status;
371 ifmr->ifm_active = mii->mii_media_active;
375 alc_mediachange(struct ifnet *ifp)
377 struct alc_softc *sc;
378 struct mii_data *mii;
379 struct mii_softc *miisc;
384 mii = device_get_softc(sc->alc_miibus);
385 if (mii->mii_instance != 0) {
386 LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
387 mii_phy_reset(miisc);
389 error = mii_mediachg(mii);
395 static struct alc_ident *
396 alc_find_ident(device_t dev)
398 struct alc_ident *ident;
399 uint16_t vendor, devid;
401 vendor = pci_get_vendor(dev);
402 devid = pci_get_device(dev);
403 for (ident = alc_ident_table; ident->name != NULL; ident++) {
404 if (vendor == ident->vendorid && devid == ident->deviceid)
411 alc_probe(device_t dev)
413 struct alc_ident *ident;
415 ident = alc_find_ident(dev);
417 device_set_desc(dev, ident->name);
418 return (BUS_PROBE_DEFAULT);
424 alc_get_macaddr(struct alc_softc *sc)
431 opt = CSR_READ_4(sc, ALC_OPT_CFG);
432 if ((CSR_READ_4(sc, ALC_MASTER_CFG) & MASTER_OTP_SEL) != 0 &&
433 (CSR_READ_4(sc, ALC_TWSI_DEBUG) & TWSI_DEBUG_DEV_EXIST) != 0) {
435 * EEPROM found, let TWSI reload EEPROM configuration.
436 * This will set ethernet address of controller.
439 switch (sc->alc_ident->deviceid) {
440 case DEVICEID_ATHEROS_AR8131:
441 case DEVICEID_ATHEROS_AR8132:
442 if ((opt & OPT_CFG_CLK_ENB) == 0) {
443 opt |= OPT_CFG_CLK_ENB;
444 CSR_WRITE_4(sc, ALC_OPT_CFG, opt);
445 CSR_READ_4(sc, ALC_OPT_CFG);
449 case DEVICEID_ATHEROS_AR8151:
450 case DEVICEID_ATHEROS_AR8151_V2:
451 case DEVICEID_ATHEROS_AR8152_B:
452 case DEVICEID_ATHEROS_AR8152_B2:
453 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
454 ALC_MII_DBG_ADDR, 0x00);
455 val = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
457 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
458 ALC_MII_DBG_DATA, val & 0xFF7F);
459 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
460 ALC_MII_DBG_ADDR, 0x3B);
461 val = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
463 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
464 ALC_MII_DBG_DATA, val | 0x0008);
469 CSR_WRITE_4(sc, ALC_LTSSM_ID_CFG,
470 CSR_READ_4(sc, ALC_LTSSM_ID_CFG) & ~LTSSM_ID_WRO_ENB);
471 CSR_WRITE_4(sc, ALC_WOL_CFG, 0);
472 CSR_READ_4(sc, ALC_WOL_CFG);
474 CSR_WRITE_4(sc, ALC_TWSI_CFG, CSR_READ_4(sc, ALC_TWSI_CFG) |
475 TWSI_CFG_SW_LD_START);
477 for (i = 100; i > 0; i--) {
479 if ((CSR_READ_4(sc, ALC_TWSI_CFG) &
480 TWSI_CFG_SW_LD_START) == 0)
484 device_printf(sc->alc_dev,
485 "reloading EEPROM timeout!\n");
488 device_printf(sc->alc_dev, "EEPROM not found!\n");
492 switch (sc->alc_ident->deviceid) {
493 case DEVICEID_ATHEROS_AR8131:
494 case DEVICEID_ATHEROS_AR8132:
495 if ((opt & OPT_CFG_CLK_ENB) != 0) {
496 opt &= ~OPT_CFG_CLK_ENB;
497 CSR_WRITE_4(sc, ALC_OPT_CFG, opt);
498 CSR_READ_4(sc, ALC_OPT_CFG);
502 case DEVICEID_ATHEROS_AR8151:
503 case DEVICEID_ATHEROS_AR8151_V2:
504 case DEVICEID_ATHEROS_AR8152_B:
505 case DEVICEID_ATHEROS_AR8152_B2:
506 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
507 ALC_MII_DBG_ADDR, 0x00);
508 val = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
510 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
511 ALC_MII_DBG_DATA, val | 0x0080);
512 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
513 ALC_MII_DBG_ADDR, 0x3B);
514 val = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
516 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
517 ALC_MII_DBG_DATA, val & 0xFFF7);
523 ea[0] = CSR_READ_4(sc, ALC_PAR0);
524 ea[1] = CSR_READ_4(sc, ALC_PAR1);
525 sc->alc_eaddr[0] = (ea[1] >> 8) & 0xFF;
526 sc->alc_eaddr[1] = (ea[1] >> 0) & 0xFF;
527 sc->alc_eaddr[2] = (ea[0] >> 24) & 0xFF;
528 sc->alc_eaddr[3] = (ea[0] >> 16) & 0xFF;
529 sc->alc_eaddr[4] = (ea[0] >> 8) & 0xFF;
530 sc->alc_eaddr[5] = (ea[0] >> 0) & 0xFF;
534 alc_disable_l0s_l1(struct alc_softc *sc)
538 /* Another magic from vendor. */
539 pmcfg = CSR_READ_4(sc, ALC_PM_CFG);
540 pmcfg &= ~(PM_CFG_L1_ENTRY_TIMER_MASK | PM_CFG_CLK_SWH_L1 |
541 PM_CFG_ASPM_L0S_ENB | PM_CFG_ASPM_L1_ENB | PM_CFG_MAC_ASPM_CHK |
542 PM_CFG_SERDES_PD_EX_L1);
543 pmcfg |= PM_CFG_SERDES_BUDS_RX_L1_ENB | PM_CFG_SERDES_PLL_L1_ENB |
544 PM_CFG_SERDES_L1_ENB;
545 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg);
549 alc_phy_reset(struct alc_softc *sc)
553 /* Reset magic from Linux. */
554 CSR_WRITE_2(sc, ALC_GPHY_CFG,
555 GPHY_CFG_HIB_EN | GPHY_CFG_HIB_PULSE | GPHY_CFG_SEL_ANA_RESET);
556 CSR_READ_2(sc, ALC_GPHY_CFG);
559 CSR_WRITE_2(sc, ALC_GPHY_CFG,
560 GPHY_CFG_EXT_RESET | GPHY_CFG_HIB_EN | GPHY_CFG_HIB_PULSE |
561 GPHY_CFG_SEL_ANA_RESET);
562 CSR_READ_2(sc, ALC_GPHY_CFG);
565 /* DSP fixup, Vendor magic. */
566 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B) {
567 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
568 ALC_MII_DBG_ADDR, 0x000A);
569 data = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
571 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
572 ALC_MII_DBG_DATA, data & 0xDFFF);
574 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151 ||
575 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2 ||
576 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B ||
577 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2) {
578 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
579 ALC_MII_DBG_ADDR, 0x003B);
580 data = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
582 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
583 ALC_MII_DBG_DATA, data & 0xFFF7);
586 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151) {
587 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
588 ALC_MII_DBG_ADDR, 0x0029);
589 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
590 ALC_MII_DBG_DATA, 0x929D);
592 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8131 ||
593 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8132 ||
594 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2 ||
595 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2) {
596 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
597 ALC_MII_DBG_ADDR, 0x0029);
598 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
599 ALC_MII_DBG_DATA, 0xB6DD);
602 /* Load DSP codes, vendor magic. */
603 data = ANA_LOOP_SEL_10BT | ANA_EN_MASK_TB | ANA_EN_10BT_IDLE |
604 ((1 << ANA_INTERVAL_SEL_TIMER_SHIFT) & ANA_INTERVAL_SEL_TIMER_MASK);
605 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
606 ALC_MII_DBG_ADDR, MII_ANA_CFG18);
607 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
608 ALC_MII_DBG_DATA, data);
610 data = ((2 << ANA_SERDES_CDR_BW_SHIFT) & ANA_SERDES_CDR_BW_MASK) |
611 ANA_SERDES_EN_DEEM | ANA_SERDES_SEL_HSP | ANA_SERDES_EN_PLL |
613 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
614 ALC_MII_DBG_ADDR, MII_ANA_CFG5);
615 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
616 ALC_MII_DBG_DATA, data);
618 data = ((44 << ANA_LONG_CABLE_TH_100_SHIFT) &
619 ANA_LONG_CABLE_TH_100_MASK) |
620 ((33 << ANA_SHORT_CABLE_TH_100_SHIFT) &
621 ANA_SHORT_CABLE_TH_100_SHIFT) |
622 ANA_BP_BAD_LINK_ACCUM | ANA_BP_SMALL_BW;
623 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
624 ALC_MII_DBG_ADDR, MII_ANA_CFG54);
625 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
626 ALC_MII_DBG_DATA, data);
628 data = ((11 << ANA_IECHO_ADJ_3_SHIFT) & ANA_IECHO_ADJ_3_MASK) |
629 ((11 << ANA_IECHO_ADJ_2_SHIFT) & ANA_IECHO_ADJ_2_MASK) |
630 ((8 << ANA_IECHO_ADJ_1_SHIFT) & ANA_IECHO_ADJ_1_MASK) |
631 ((8 << ANA_IECHO_ADJ_0_SHIFT) & ANA_IECHO_ADJ_0_MASK);
632 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
633 ALC_MII_DBG_ADDR, MII_ANA_CFG4);
634 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
635 ALC_MII_DBG_DATA, data);
637 data = ((7 & ANA_MANUL_SWICH_ON_SHIFT) & ANA_MANUL_SWICH_ON_MASK) |
638 ANA_RESTART_CAL | ANA_MAN_ENABLE | ANA_SEL_HSP | ANA_EN_HB |
640 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
641 ALC_MII_DBG_ADDR, MII_ANA_CFG0);
642 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
643 ALC_MII_DBG_DATA, data);
648 alc_phy_down(struct alc_softc *sc)
650 switch (sc->alc_ident->deviceid) {
651 case DEVICEID_ATHEROS_AR8151:
652 case DEVICEID_ATHEROS_AR8151_V2:
654 * GPHY power down caused more problems on AR8151 v2.0.
655 * When driver is reloaded after GPHY power down,
656 * accesses to PHY/MAC registers hung the system. Only
657 * cold boot recovered from it. I'm not sure whether
658 * AR8151 v1.0 also requires this one though. I don't
659 * have AR8151 v1.0 controller in hand.
660 * The only option left is to isolate the PHY and
661 * initiates power down the PHY which in turn saves
662 * more power when driver is unloaded.
664 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
665 MII_BMCR, BMCR_ISO | BMCR_PDOWN);
668 /* Force PHY down. */
669 CSR_WRITE_2(sc, ALC_GPHY_CFG,
670 GPHY_CFG_EXT_RESET | GPHY_CFG_HIB_EN | GPHY_CFG_HIB_PULSE |
671 GPHY_CFG_SEL_ANA_RESET | GPHY_CFG_PHY_IDDQ |
680 alc_aspm(struct alc_softc *sc, int media)
687 pmcfg = CSR_READ_4(sc, ALC_PM_CFG);
688 if ((sc->alc_flags & (ALC_FLAG_APS | ALC_FLAG_PCIE)) ==
689 (ALC_FLAG_APS | ALC_FLAG_PCIE)) {
690 linkcfg = CSR_READ_2(sc, sc->alc_expcap +
691 PCIR_EXPRESS_LINK_CTL);
696 pmcfg &= ~PM_CFG_SERDES_PD_EX_L1;
697 pmcfg &= ~(PM_CFG_L1_ENTRY_TIMER_MASK | PM_CFG_LCKDET_TIMER_MASK);
698 pmcfg |= PM_CFG_MAC_ASPM_CHK;
699 pmcfg |= PM_CFG_SERDES_ENB | PM_CFG_RBER_ENB;
700 pmcfg &= ~(PM_CFG_ASPM_L1_ENB | PM_CFG_ASPM_L0S_ENB);
702 if ((sc->alc_flags & ALC_FLAG_APS) != 0) {
703 /* Disable extended sync except AR8152 B v1.0 */
705 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B &&
706 sc->alc_rev == ATHEROS_AR8152_B_V10)
708 CSR_WRITE_2(sc, sc->alc_expcap + PCIR_EXPRESS_LINK_CTL,
710 pmcfg &= ~(PM_CFG_EN_BUFS_RX_L0S | PM_CFG_SA_DLY_ENB |
712 pmcfg |= (PM_CFG_L1_ENTRY_TIMER_DEFAULT <<
713 PM_CFG_L1_ENTRY_TIMER_SHIFT);
714 pmcfg &= ~PM_CFG_PM_REQ_TIMER_MASK;
715 pmcfg |= (PM_CFG_PM_REQ_TIMER_DEFAULT <<
716 PM_CFG_PM_REQ_TIMER_SHIFT);
717 pmcfg |= PM_CFG_SERDES_PD_EX_L1 | PM_CFG_PCIE_RECV;
720 if ((sc->alc_flags & ALC_FLAG_LINK) != 0) {
721 if ((sc->alc_flags & ALC_FLAG_L0S) != 0)
722 pmcfg |= PM_CFG_ASPM_L0S_ENB;
723 if ((sc->alc_flags & ALC_FLAG_L1S) != 0)
724 pmcfg |= PM_CFG_ASPM_L1_ENB;
725 if ((sc->alc_flags & ALC_FLAG_APS) != 0) {
726 if (sc->alc_ident->deviceid ==
727 DEVICEID_ATHEROS_AR8152_B) {
728 pmcfg &= ~PM_CFG_ASPM_L0S_ENB;
730 pmcfg &= ~(PM_CFG_SERDES_L1_ENB |
731 PM_CFG_SERDES_PLL_L1_ENB |
732 PM_CFG_SERDES_BUDS_RX_L1_ENB);
733 pmcfg |= PM_CFG_CLK_SWH_L1;
734 if (media == IFM_100_TX || media == IFM_1000_T) {
735 pmcfg &= ~PM_CFG_L1_ENTRY_TIMER_MASK;
736 switch (sc->alc_ident->deviceid) {
737 case DEVICEID_ATHEROS_AR8152_B:
739 PM_CFG_L1_ENTRY_TIMER_SHIFT);
741 case DEVICEID_ATHEROS_AR8152_B2:
742 case DEVICEID_ATHEROS_AR8151_V2:
744 PM_CFG_L1_ENTRY_TIMER_SHIFT);
748 PM_CFG_L1_ENTRY_TIMER_SHIFT);
753 pmcfg |= PM_CFG_SERDES_L1_ENB |
754 PM_CFG_SERDES_PLL_L1_ENB |
755 PM_CFG_SERDES_BUDS_RX_L1_ENB;
756 pmcfg &= ~(PM_CFG_CLK_SWH_L1 |
757 PM_CFG_ASPM_L1_ENB | PM_CFG_ASPM_L0S_ENB);
760 pmcfg &= ~(PM_CFG_SERDES_BUDS_RX_L1_ENB | PM_CFG_SERDES_L1_ENB |
761 PM_CFG_SERDES_PLL_L1_ENB);
762 pmcfg |= PM_CFG_CLK_SWH_L1;
763 if ((sc->alc_flags & ALC_FLAG_L1S) != 0)
764 pmcfg |= PM_CFG_ASPM_L1_ENB;
766 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg);
770 alc_attach(device_t dev)
772 struct alc_softc *sc;
774 char *aspm_state[] = { "L0s/L1", "L0s", "L1", "L0s/L1" };
776 int base, error, i, msic, msixc, state;
777 uint32_t cap, ctl, val;
780 sc = device_get_softc(dev);
783 lockinit(&sc->alc_lock, "alc_lock", 0, LK_CANRECURSE);
784 callout_init_mp(&sc->alc_tick_ch);
785 TASK_INIT(&sc->alc_int_task, 0, alc_int_task, sc);
786 sc->alc_ident = alc_find_ident(dev);
788 /* Map the device. */
789 pci_enable_busmaster(dev);
790 sc->alc_res_spec = alc_res_spec_mem;
791 sc->alc_irq_spec = alc_irq_spec_legacy;
792 error = bus_alloc_resources(dev, sc->alc_res_spec, sc->alc_res);
794 device_printf(dev, "cannot allocate memory resources.\n");
798 /* Set PHY address. */
799 sc->alc_phyaddr = ALC_PHY_ADDR;
801 /* Initialize DMA parameters. */
802 sc->alc_dma_rd_burst = 0;
803 sc->alc_dma_wr_burst = 0;
804 sc->alc_rcb = DMA_CFG_RCB_64;
805 if (pci_find_extcap(dev, PCIY_EXPRESS, &base) == 0) {
806 sc->alc_flags |= ALC_FLAG_PCIE;
807 sc->alc_expcap = base;
808 burst = CSR_READ_2(sc, base + PCIR_EXPRESS_DEVICE_CTL);
809 sc->alc_dma_rd_burst =
810 (burst & PCIM_EXP_CTL_MAX_READ_REQUEST) >> 12;
811 sc->alc_dma_wr_burst = (burst & PCIM_EXP_CTL_MAX_PAYLOAD) >> 5;
813 device_printf(dev, "Read request size : %u bytes.\n",
814 alc_dma_burst[sc->alc_dma_rd_burst]);
815 device_printf(dev, "TLP payload size : %u bytes.\n",
816 alc_dma_burst[sc->alc_dma_wr_burst]);
818 if (alc_dma_burst[sc->alc_dma_rd_burst] > 1024)
819 sc->alc_dma_rd_burst = 3;
820 if (alc_dma_burst[sc->alc_dma_wr_burst] > 1024)
821 sc->alc_dma_wr_burst = 3;
822 /* Clear data link and flow-control protocol error. */
823 val = CSR_READ_4(sc, ALC_PEX_UNC_ERR_SEV);
824 val &= ~(PEX_UNC_ERR_SEV_DLP | PEX_UNC_ERR_SEV_FCP);
825 CSR_WRITE_4(sc, ALC_PEX_UNC_ERR_SEV, val);
826 CSR_WRITE_4(sc, ALC_LTSSM_ID_CFG,
827 CSR_READ_4(sc, ALC_LTSSM_ID_CFG) & ~LTSSM_ID_WRO_ENB);
828 CSR_WRITE_4(sc, ALC_PCIE_PHYMISC,
829 CSR_READ_4(sc, ALC_PCIE_PHYMISC) |
830 PCIE_PHYMISC_FORCE_RCV_DET);
831 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B &&
832 sc->alc_rev == ATHEROS_AR8152_B_V10) {
833 val = CSR_READ_4(sc, ALC_PCIE_PHYMISC2);
834 val &= ~(PCIE_PHYMISC2_SERDES_CDR_MASK |
835 PCIE_PHYMISC2_SERDES_TH_MASK);
836 val |= 3 << PCIE_PHYMISC2_SERDES_CDR_SHIFT;
837 val |= 3 << PCIE_PHYMISC2_SERDES_TH_SHIFT;
838 CSR_WRITE_4(sc, ALC_PCIE_PHYMISC2, val);
841 /* Disable ASPM L0S and L1. */
842 cap = CSR_READ_2(sc, base + PCIR_EXPRESS_LINK_CAP);
843 if ((cap & PCIM_LINK_CAP_ASPM) != 0) {
844 ctl = CSR_READ_2(sc, base + PCIR_EXPRESS_LINK_CTL);
845 if ((ctl & 0x08) != 0)
846 sc->alc_rcb = DMA_CFG_RCB_128;
848 device_printf(dev, "RCB %u bytes\n",
849 sc->alc_rcb == DMA_CFG_RCB_64 ? 64 : 128);
852 sc->alc_flags |= ALC_FLAG_L0S;
854 sc->alc_flags |= ALC_FLAG_L1S;
856 device_printf(sc->alc_dev, "ASPM %s %s\n",
858 state == 0 ? "disabled" : "enabled");
859 alc_disable_l0s_l1(sc);
862 device_printf(sc->alc_dev, "no ASPM support\n");
869 /* Reset the ethernet controller. */
873 * One odd thing is AR8132 uses the same PHY hardware(F1
874 * gigabit PHY) of AR8131. So atphy(4) of AR8132 reports
875 * the PHY supports 1000Mbps but that's not true. The PHY
876 * used in AR8132 can't establish gigabit link even if it
877 * shows the same PHY model/revision number of AR8131.
879 switch (sc->alc_ident->deviceid) {
880 case DEVICEID_ATHEROS_AR8152_B:
881 case DEVICEID_ATHEROS_AR8152_B2:
882 sc->alc_flags |= ALC_FLAG_APS;
884 case DEVICEID_ATHEROS_AR8132:
885 sc->alc_flags |= ALC_FLAG_FASTETHER;
887 case DEVICEID_ATHEROS_AR8151:
888 case DEVICEID_ATHEROS_AR8151_V2:
889 sc->alc_flags |= ALC_FLAG_APS;
894 sc->alc_flags |= ALC_FLAG_ASPM_MON | ALC_FLAG_JUMBO;
897 * It seems that AR813x/AR815x has silicon bug for SMB. In
898 * addition, Atheros said that enabling SMB wouldn't improve
899 * performance. However I think it's bad to access lots of
900 * registers to extract MAC statistics.
902 sc->alc_flags |= ALC_FLAG_SMB_BUG;
905 * Don't use Tx CMB. It is known to have silicon bug.
907 sc->alc_flags |= ALC_FLAG_CMB_BUG;
908 sc->alc_rev = pci_get_revid(dev);
909 sc->alc_chip_rev = CSR_READ_4(sc, ALC_MASTER_CFG) >>
910 MASTER_CHIP_REV_SHIFT;
912 device_printf(dev, "PCI device revision : 0x%04x\n",
914 device_printf(dev, "Chip id/revision : 0x%04x\n",
917 device_printf(dev, "%u Tx FIFO, %u Rx FIFO\n",
918 CSR_READ_4(sc, ALC_SRAM_TX_FIFO_LEN) * 8,
919 CSR_READ_4(sc, ALC_SRAM_RX_FIFO_LEN) * 8);
921 /* Allocate IRQ resources. */
922 msixc = pci_msix_count(dev);
923 msic = pci_msi_count(dev);
925 device_printf(dev, "MSIX count : %d\n", msixc);
926 device_printf(dev, "MSI count : %d\n", msic);
930 /* Prefer MSIX over MSI. */
931 if (msix_disable == 0 || msi_disable == 0) {
932 if (msix_disable == 0 && msixc == ALC_MSIX_MESSAGES &&
933 pci_alloc_msix(dev, &msixc) == 0) {
934 if (msic == ALC_MSIX_MESSAGES) {
936 "Using %d MSIX message(s).\n", msixc);
937 sc->alc_flags |= ALC_FLAG_MSIX;
938 sc->alc_irq_spec = alc_irq_spec_msix;
940 pci_release_msi(dev);
942 if (msi_disable == 0 && (sc->alc_flags & ALC_FLAG_MSIX) == 0 &&
943 msic == ALC_MSI_MESSAGES &&
944 pci_alloc_msi(dev, &msic) == 0) {
945 if (msic == ALC_MSI_MESSAGES) {
947 "Using %d MSI message(s).\n", msic);
948 sc->alc_flags |= ALC_FLAG_MSI;
949 sc->alc_irq_spec = alc_irq_spec_msi;
951 pci_release_msi(dev);
956 error = bus_alloc_resources(dev, sc->alc_irq_spec, sc->alc_irq);
958 device_printf(dev, "cannot allocate IRQ resources.\n");
962 /* Create device sysctl node. */
965 if ((error = alc_dma_alloc(sc) != 0))
968 /* Load station address. */
971 ifp = sc->alc_ifp = &sc->arpcom.ac_if;
973 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
974 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
975 ifp->if_ioctl = alc_ioctl;
976 ifp->if_start = alc_start;
977 ifp->if_init = alc_init;
978 ifp->if_snd.ifq_maxlen = ALC_TX_RING_CNT - 1;
979 ifq_set_maxlen(&ifp->if_snd, ifp->if_snd.ifq_maxlen);
980 ifq_set_ready(&ifp->if_snd);
981 ifp->if_capabilities = IFCAP_TXCSUM | IFCAP_TSO4;
982 ifp->if_hwassist = ALC_CSUM_FEATURES | CSUM_TSO;
985 if (pci_find_extcap(dev, PCIY_PMG, &pmc) == 0) {
986 ifp->if_capabilities |= IFCAP_WOL_MAGIC | IFCAP_WOL_MCAST;
987 sc->alc_flags |= ALC_FLAG_PM;
988 sc->alc_pmcap = base;
991 ifp->if_capenable = ifp->if_capabilities;
993 /* Set up MII bus. */
994 if ((error = mii_phy_probe(dev, &sc->alc_miibus, alc_mediachange,
995 alc_mediastatus)) != 0) {
996 device_printf(dev, "no PHY found!\n");
1000 ether_ifattach(ifp, sc->alc_eaddr, NULL);
1002 /* VLAN capability setup. */
1003 ifp->if_capabilities |= IFCAP_VLAN_MTU;
1004 ifp->if_capabilities |= IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_HWCSUM;
1005 ifp->if_capenable = ifp->if_capabilities;
1008 * It seems enabling Tx checksum offloading makes more trouble.
1009 * Sometimes the controller does not receive any frames when
1010 * Tx checksum offloading is enabled. I'm not sure whether this
1011 * is a bug in Tx checksum offloading logic or I got broken
1012 * sample boards. To safety, don't enable Tx checksum offloading
1013 * by default but give chance to users to toggle it if they know
1014 * their controllers work without problems.
1016 ifp->if_capenable &= ~IFCAP_TXCSUM;
1017 ifp->if_hwassist &= ~ALC_CSUM_FEATURES;
1019 /* Tell the upper layer(s) we support long frames. */
1020 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
1022 /* Create local taskq. */
1023 TASK_INIT(&sc->alc_tx_task, 1, alc_tx_task, ifp);
1024 sc->alc_tq = taskqueue_create("alc_taskq", M_WAITOK,
1025 taskqueue_thread_enqueue, &sc->alc_tq);
1026 if (sc->alc_tq == NULL) {
1027 device_printf(dev, "could not create taskqueue.\n");
1028 ether_ifdetach(ifp);
1032 taskqueue_start_threads(&sc->alc_tq, 1, TDPRI_KERN_DAEMON, -1, "%s taskq",
1033 device_get_nameunit(sc->alc_dev));
1035 if ((sc->alc_flags & ALC_FLAG_MSIX) != 0)
1036 msic = ALC_MSIX_MESSAGES;
1037 else if ((sc->alc_flags & ALC_FLAG_MSI) != 0)
1038 msic = ALC_MSI_MESSAGES;
1041 for (i = 0; i < msic; i++) {
1042 error = bus_setup_intr(dev, sc->alc_irq[i], INTR_MPSAFE,
1044 &sc->alc_intrhand[i], NULL);
1049 device_printf(dev, "could not set up interrupt handler.\n");
1050 taskqueue_free(sc->alc_tq);
1052 ether_ifdetach(ifp);
1064 alc_detach(device_t dev)
1066 struct alc_softc *sc;
1070 sc = device_get_softc(dev);
1073 if (device_is_attached(dev)) {
1075 sc->alc_flags |= ALC_FLAG_DETACH;
1080 callout_drain(&sc->alc_tick_ch);
1082 taskqueue_drain(sc->alc_tq, &sc->alc_int_task);
1083 taskqueue_drain(sc->alc_tq, &sc->alc_tx_task);
1084 ether_ifdetach(ifp);
1087 if (sc->alc_tq != NULL) {
1088 taskqueue_drain(sc->alc_tq, &sc->alc_int_task);
1089 taskqueue_free(sc->alc_tq);
1093 if (sc->alc_miibus != NULL) {
1094 device_delete_child(dev, sc->alc_miibus);
1095 sc->alc_miibus = NULL;
1097 bus_generic_detach(dev);
1101 // XXX? if_free(ifp);
1105 if ((sc->alc_flags & ALC_FLAG_MSIX) != 0)
1106 msic = ALC_MSIX_MESSAGES;
1107 else if ((sc->alc_flags & ALC_FLAG_MSI) != 0)
1108 msic = ALC_MSI_MESSAGES;
1111 for (i = 0; i < msic; i++) {
1112 if (sc->alc_intrhand[i] != NULL) {
1113 bus_teardown_intr(dev, sc->alc_irq[i],
1114 sc->alc_intrhand[i]);
1115 sc->alc_intrhand[i] = NULL;
1118 if (sc->alc_res[0] != NULL)
1120 bus_release_resources(dev, sc->alc_irq_spec, sc->alc_irq);
1121 if ((sc->alc_flags & (ALC_FLAG_MSI | ALC_FLAG_MSIX)) != 0)
1122 pci_release_msi(dev);
1123 bus_release_resources(dev, sc->alc_res_spec, sc->alc_res);
1124 lockuninit(&sc->alc_lock);
1129 #define ALC_SYSCTL_STAT_ADD32(c, h, n, p, d) \
1130 SYSCTL_ADD_UINT(c, h, OID_AUTO, n, CTLFLAG_RD, p, 0, d)
1131 #define ALC_SYSCTL_STAT_ADD64(c, h, n, p, d) \
1132 SYSCTL_ADD_QUAD(c, h, OID_AUTO, n, CTLFLAG_RD, p, 0, d)
1135 alc_sysctl_node(struct alc_softc *sc)
1137 struct sysctl_ctx_list *ctx;
1138 struct sysctl_oid *tree;
1139 struct sysctl_oid_list *child, *parent;
1140 struct alc_hw_stats *stats;
1143 stats = &sc->alc_stats;
1144 ctx = &sc->alc_sysctl_ctx;
1145 sysctl_ctx_init(ctx);
1147 tree = SYSCTL_ADD_NODE(ctx, SYSCTL_STATIC_CHILDREN(_hw),
1149 device_get_nameunit(sc->alc_dev),
1152 device_printf(sc->alc_dev, "can't add sysctl node\n");
1155 child = SYSCTL_CHILDREN(tree);
1157 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "int_rx_mod",
1158 CTLTYPE_INT | CTLFLAG_RW, &sc->alc_int_rx_mod, 0,
1159 sysctl_hw_alc_int_mod, "I", "alc Rx interrupt moderation");
1160 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "int_tx_mod",
1161 CTLTYPE_INT | CTLFLAG_RW, &sc->alc_int_tx_mod, 0,
1162 sysctl_hw_alc_int_mod, "I", "alc Tx interrupt moderation");
1163 /* Pull in device tunables. */
1164 sc->alc_int_rx_mod = ALC_IM_RX_TIMER_DEFAULT;
1165 error = resource_int_value(device_get_name(sc->alc_dev),
1166 device_get_unit(sc->alc_dev), "int_rx_mod", &sc->alc_int_rx_mod);
1168 if (sc->alc_int_rx_mod < ALC_IM_TIMER_MIN ||
1169 sc->alc_int_rx_mod > ALC_IM_TIMER_MAX) {
1170 device_printf(sc->alc_dev, "int_rx_mod value out of "
1171 "range; using default: %d\n",
1172 ALC_IM_RX_TIMER_DEFAULT);
1173 sc->alc_int_rx_mod = ALC_IM_RX_TIMER_DEFAULT;
1176 sc->alc_int_tx_mod = ALC_IM_TX_TIMER_DEFAULT;
1177 error = resource_int_value(device_get_name(sc->alc_dev),
1178 device_get_unit(sc->alc_dev), "int_tx_mod", &sc->alc_int_tx_mod);
1180 if (sc->alc_int_tx_mod < ALC_IM_TIMER_MIN ||
1181 sc->alc_int_tx_mod > ALC_IM_TIMER_MAX) {
1182 device_printf(sc->alc_dev, "int_tx_mod value out of "
1183 "range; using default: %d\n",
1184 ALC_IM_TX_TIMER_DEFAULT);
1185 sc->alc_int_tx_mod = ALC_IM_TX_TIMER_DEFAULT;
1188 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "process_limit",
1189 CTLTYPE_INT | CTLFLAG_RW, &sc->alc_process_limit, 0,
1190 sysctl_hw_alc_proc_limit, "I",
1191 "max number of Rx events to process");
1192 /* Pull in device tunables. */
1193 sc->alc_process_limit = ALC_PROC_DEFAULT;
1194 error = resource_int_value(device_get_name(sc->alc_dev),
1195 device_get_unit(sc->alc_dev), "process_limit",
1196 &sc->alc_process_limit);
1198 if (sc->alc_process_limit < ALC_PROC_MIN ||
1199 sc->alc_process_limit > ALC_PROC_MAX) {
1200 device_printf(sc->alc_dev,
1201 "process_limit value out of range; "
1202 "using default: %d\n", ALC_PROC_DEFAULT);
1203 sc->alc_process_limit = ALC_PROC_DEFAULT;
1207 tree = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "stats", CTLFLAG_RD,
1208 NULL, "ALC statistics");
1209 parent = SYSCTL_CHILDREN(tree);
1211 /* Rx statistics. */
1212 tree = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "rx", CTLFLAG_RD,
1213 NULL, "Rx MAC statistics");
1214 child = SYSCTL_CHILDREN(tree);
1215 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_frames",
1216 &stats->rx_frames, "Good frames");
1217 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_bcast_frames",
1218 &stats->rx_bcast_frames, "Good broadcast frames");
1219 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_mcast_frames",
1220 &stats->rx_mcast_frames, "Good multicast frames");
1221 ALC_SYSCTL_STAT_ADD32(ctx, child, "pause_frames",
1222 &stats->rx_pause_frames, "Pause control frames");
1223 ALC_SYSCTL_STAT_ADD32(ctx, child, "control_frames",
1224 &stats->rx_control_frames, "Control frames");
1225 ALC_SYSCTL_STAT_ADD32(ctx, child, "crc_errs",
1226 &stats->rx_crcerrs, "CRC errors");
1227 ALC_SYSCTL_STAT_ADD32(ctx, child, "len_errs",
1228 &stats->rx_lenerrs, "Frames with length mismatched");
1229 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_octets",
1230 &stats->rx_bytes, "Good octets");
1231 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_bcast_octets",
1232 &stats->rx_bcast_bytes, "Good broadcast octets");
1233 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_mcast_octets",
1234 &stats->rx_mcast_bytes, "Good multicast octets");
1235 ALC_SYSCTL_STAT_ADD32(ctx, child, "runts",
1236 &stats->rx_runts, "Too short frames");
1237 ALC_SYSCTL_STAT_ADD32(ctx, child, "fragments",
1238 &stats->rx_fragments, "Fragmented frames");
1239 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_64",
1240 &stats->rx_pkts_64, "64 bytes frames");
1241 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_65_127",
1242 &stats->rx_pkts_65_127, "65 to 127 bytes frames");
1243 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_128_255",
1244 &stats->rx_pkts_128_255, "128 to 255 bytes frames");
1245 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_256_511",
1246 &stats->rx_pkts_256_511, "256 to 511 bytes frames");
1247 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_512_1023",
1248 &stats->rx_pkts_512_1023, "512 to 1023 bytes frames");
1249 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_1024_1518",
1250 &stats->rx_pkts_1024_1518, "1024 to 1518 bytes frames");
1251 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_1519_max",
1252 &stats->rx_pkts_1519_max, "1519 to max frames");
1253 ALC_SYSCTL_STAT_ADD32(ctx, child, "trunc_errs",
1254 &stats->rx_pkts_truncated, "Truncated frames due to MTU size");
1255 ALC_SYSCTL_STAT_ADD32(ctx, child, "fifo_oflows",
1256 &stats->rx_fifo_oflows, "FIFO overflows");
1257 ALC_SYSCTL_STAT_ADD32(ctx, child, "rrs_errs",
1258 &stats->rx_rrs_errs, "Return status write-back errors");
1259 ALC_SYSCTL_STAT_ADD32(ctx, child, "align_errs",
1260 &stats->rx_alignerrs, "Alignment errors");
1261 ALC_SYSCTL_STAT_ADD32(ctx, child, "filtered",
1262 &stats->rx_pkts_filtered,
1263 "Frames dropped due to address filtering");
1265 /* Tx statistics. */
1266 tree = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "tx", CTLFLAG_RD,
1267 NULL, "Tx MAC statistics");
1268 child = SYSCTL_CHILDREN(tree);
1269 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_frames",
1270 &stats->tx_frames, "Good frames");
1271 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_bcast_frames",
1272 &stats->tx_bcast_frames, "Good broadcast frames");
1273 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_mcast_frames",
1274 &stats->tx_mcast_frames, "Good multicast frames");
1275 ALC_SYSCTL_STAT_ADD32(ctx, child, "pause_frames",
1276 &stats->tx_pause_frames, "Pause control frames");
1277 ALC_SYSCTL_STAT_ADD32(ctx, child, "control_frames",
1278 &stats->tx_control_frames, "Control frames");
1279 ALC_SYSCTL_STAT_ADD32(ctx, child, "excess_defers",
1280 &stats->tx_excess_defer, "Frames with excessive derferrals");
1281 ALC_SYSCTL_STAT_ADD32(ctx, child, "defers",
1282 &stats->tx_excess_defer, "Frames with derferrals");
1283 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_octets",
1284 &stats->tx_bytes, "Good octets");
1285 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_bcast_octets",
1286 &stats->tx_bcast_bytes, "Good broadcast octets");
1287 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_mcast_octets",
1288 &stats->tx_mcast_bytes, "Good multicast octets");
1289 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_64",
1290 &stats->tx_pkts_64, "64 bytes frames");
1291 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_65_127",
1292 &stats->tx_pkts_65_127, "65 to 127 bytes frames");
1293 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_128_255",
1294 &stats->tx_pkts_128_255, "128 to 255 bytes frames");
1295 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_256_511",
1296 &stats->tx_pkts_256_511, "256 to 511 bytes frames");
1297 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_512_1023",
1298 &stats->tx_pkts_512_1023, "512 to 1023 bytes frames");
1299 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_1024_1518",
1300 &stats->tx_pkts_1024_1518, "1024 to 1518 bytes frames");
1301 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_1519_max",
1302 &stats->tx_pkts_1519_max, "1519 to max frames");
1303 ALC_SYSCTL_STAT_ADD32(ctx, child, "single_colls",
1304 &stats->tx_single_colls, "Single collisions");
1305 ALC_SYSCTL_STAT_ADD32(ctx, child, "multi_colls",
1306 &stats->tx_multi_colls, "Multiple collisions");
1307 ALC_SYSCTL_STAT_ADD32(ctx, child, "late_colls",
1308 &stats->tx_late_colls, "Late collisions");
1309 ALC_SYSCTL_STAT_ADD32(ctx, child, "excess_colls",
1310 &stats->tx_excess_colls, "Excessive collisions");
1311 ALC_SYSCTL_STAT_ADD32(ctx, child, "abort",
1312 &stats->tx_abort, "Aborted frames due to Excessive collisions");
1313 ALC_SYSCTL_STAT_ADD32(ctx, child, "underruns",
1314 &stats->tx_underrun, "FIFO underruns");
1315 ALC_SYSCTL_STAT_ADD32(ctx, child, "desc_underruns",
1316 &stats->tx_desc_underrun, "Descriptor write-back errors");
1317 ALC_SYSCTL_STAT_ADD32(ctx, child, "len_errs",
1318 &stats->tx_lenerrs, "Frames with length mismatched");
1319 ALC_SYSCTL_STAT_ADD32(ctx, child, "trunc_errs",
1320 &stats->tx_pkts_truncated, "Truncated frames due to MTU size");
1323 #undef ALC_SYSCTL_STAT_ADD32
1324 #undef ALC_SYSCTL_STAT_ADD64
1326 struct alc_dmamap_arg {
1327 bus_addr_t alc_busaddr;
1331 alc_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
1333 struct alc_dmamap_arg *ctx;
1338 KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs));
1340 ctx = (struct alc_dmamap_arg *)arg;
1341 ctx->alc_busaddr = segs[0].ds_addr;
1345 * Normal and high Tx descriptors shares single Tx high address.
1346 * Four Rx descriptor/return rings and CMB shares the same Rx
1350 alc_check_boundary(struct alc_softc *sc)
1352 bus_addr_t cmb_end, rx_ring_end, rr_ring_end, tx_ring_end;
1354 rx_ring_end = sc->alc_rdata.alc_rx_ring_paddr + ALC_RX_RING_SZ;
1355 rr_ring_end = sc->alc_rdata.alc_rr_ring_paddr + ALC_RR_RING_SZ;
1356 cmb_end = sc->alc_rdata.alc_cmb_paddr + ALC_CMB_SZ;
1357 tx_ring_end = sc->alc_rdata.alc_tx_ring_paddr + ALC_TX_RING_SZ;
1359 /* 4GB boundary crossing is not allowed. */
1360 if ((ALC_ADDR_HI(rx_ring_end) !=
1361 ALC_ADDR_HI(sc->alc_rdata.alc_rx_ring_paddr)) ||
1362 (ALC_ADDR_HI(rr_ring_end) !=
1363 ALC_ADDR_HI(sc->alc_rdata.alc_rr_ring_paddr)) ||
1364 (ALC_ADDR_HI(cmb_end) !=
1365 ALC_ADDR_HI(sc->alc_rdata.alc_cmb_paddr)) ||
1366 (ALC_ADDR_HI(tx_ring_end) !=
1367 ALC_ADDR_HI(sc->alc_rdata.alc_tx_ring_paddr)))
1370 * Make sure Rx return descriptor/Rx descriptor/CMB use
1371 * the same high address.
1373 if ((ALC_ADDR_HI(rx_ring_end) != ALC_ADDR_HI(rr_ring_end)) ||
1374 (ALC_ADDR_HI(rx_ring_end) != ALC_ADDR_HI(cmb_end)))
1381 alc_dma_alloc(struct alc_softc *sc)
1383 struct alc_txdesc *txd;
1384 struct alc_rxdesc *rxd;
1386 struct alc_dmamap_arg ctx;
1389 lowaddr = BUS_SPACE_MAXADDR;
1391 /* Create parent DMA tag. */
1392 error = bus_dma_tag_create(
1393 sc->alc_cdata.alc_parent_tag, /* parent */
1394 1, 0, /* alignment, boundary */
1395 lowaddr, /* lowaddr */
1396 BUS_SPACE_MAXADDR, /* highaddr */
1397 NULL, NULL, /* filter, filterarg */
1398 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
1400 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
1402 &sc->alc_cdata.alc_parent_tag);
1404 device_printf(sc->alc_dev,
1405 "could not create parent DMA tag.\n");
1409 /* Create DMA tag for Tx descriptor ring. */
1410 error = bus_dma_tag_create(
1411 sc->alc_cdata.alc_parent_tag, /* parent */
1412 ALC_TX_RING_ALIGN, 0, /* alignment, boundary */
1413 BUS_SPACE_MAXADDR, /* lowaddr */
1414 BUS_SPACE_MAXADDR, /* highaddr */
1415 NULL, NULL, /* filter, filterarg */
1416 ALC_TX_RING_SZ, /* maxsize */
1418 ALC_TX_RING_SZ, /* maxsegsize */
1420 &sc->alc_cdata.alc_tx_ring_tag);
1422 device_printf(sc->alc_dev,
1423 "could not create Tx ring DMA tag.\n");
1427 /* Create DMA tag for Rx free descriptor ring. */
1428 error = bus_dma_tag_create(
1429 sc->alc_cdata.alc_parent_tag, /* parent */
1430 ALC_RX_RING_ALIGN, 0, /* alignment, boundary */
1431 BUS_SPACE_MAXADDR, /* lowaddr */
1432 BUS_SPACE_MAXADDR, /* highaddr */
1433 NULL, NULL, /* filter, filterarg */
1434 ALC_RX_RING_SZ, /* maxsize */
1436 ALC_RX_RING_SZ, /* maxsegsize */
1438 &sc->alc_cdata.alc_rx_ring_tag);
1440 device_printf(sc->alc_dev,
1441 "could not create Rx ring DMA tag.\n");
1444 /* Create DMA tag for Rx return descriptor ring. */
1445 error = bus_dma_tag_create(
1446 sc->alc_cdata.alc_parent_tag, /* parent */
1447 ALC_RR_RING_ALIGN, 0, /* alignment, boundary */
1448 BUS_SPACE_MAXADDR, /* lowaddr */
1449 BUS_SPACE_MAXADDR, /* highaddr */
1450 NULL, NULL, /* filter, filterarg */
1451 ALC_RR_RING_SZ, /* maxsize */
1453 ALC_RR_RING_SZ, /* maxsegsize */
1455 &sc->alc_cdata.alc_rr_ring_tag);
1457 device_printf(sc->alc_dev,
1458 "could not create Rx return ring DMA tag.\n");
1462 /* Create DMA tag for coalescing message block. */
1463 error = bus_dma_tag_create(
1464 sc->alc_cdata.alc_parent_tag, /* parent */
1465 ALC_CMB_ALIGN, 0, /* alignment, boundary */
1466 BUS_SPACE_MAXADDR, /* lowaddr */
1467 BUS_SPACE_MAXADDR, /* highaddr */
1468 NULL, NULL, /* filter, filterarg */
1469 ALC_CMB_SZ, /* maxsize */
1471 ALC_CMB_SZ, /* maxsegsize */
1473 &sc->alc_cdata.alc_cmb_tag);
1475 device_printf(sc->alc_dev,
1476 "could not create CMB DMA tag.\n");
1479 /* Create DMA tag for status message block. */
1480 error = bus_dma_tag_create(
1481 sc->alc_cdata.alc_parent_tag, /* parent */
1482 ALC_SMB_ALIGN, 0, /* alignment, boundary */
1483 BUS_SPACE_MAXADDR, /* lowaddr */
1484 BUS_SPACE_MAXADDR, /* highaddr */
1485 NULL, NULL, /* filter, filterarg */
1486 ALC_SMB_SZ, /* maxsize */
1488 ALC_SMB_SZ, /* maxsegsize */
1490 &sc->alc_cdata.alc_smb_tag);
1492 device_printf(sc->alc_dev,
1493 "could not create SMB DMA tag.\n");
1497 /* Allocate DMA'able memory and load the DMA map for Tx ring. */
1498 error = bus_dmamem_alloc(sc->alc_cdata.alc_tx_ring_tag,
1499 (void **)&sc->alc_rdata.alc_tx_ring,
1500 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
1501 &sc->alc_cdata.alc_tx_ring_map);
1503 device_printf(sc->alc_dev,
1504 "could not allocate DMA'able memory for Tx ring.\n");
1507 ctx.alc_busaddr = 0;
1508 error = bus_dmamap_load(sc->alc_cdata.alc_tx_ring_tag,
1509 sc->alc_cdata.alc_tx_ring_map, sc->alc_rdata.alc_tx_ring,
1510 ALC_TX_RING_SZ, alc_dmamap_cb, &ctx, 0);
1511 if (error != 0 || ctx.alc_busaddr == 0) {
1512 device_printf(sc->alc_dev,
1513 "could not load DMA'able memory for Tx ring.\n");
1516 sc->alc_rdata.alc_tx_ring_paddr = ctx.alc_busaddr;
1518 /* Allocate DMA'able memory and load the DMA map for Rx ring. */
1519 error = bus_dmamem_alloc(sc->alc_cdata.alc_rx_ring_tag,
1520 (void **)&sc->alc_rdata.alc_rx_ring,
1521 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
1522 &sc->alc_cdata.alc_rx_ring_map);
1524 device_printf(sc->alc_dev,
1525 "could not allocate DMA'able memory for Rx ring.\n");
1528 ctx.alc_busaddr = 0;
1529 error = bus_dmamap_load(sc->alc_cdata.alc_rx_ring_tag,
1530 sc->alc_cdata.alc_rx_ring_map, sc->alc_rdata.alc_rx_ring,
1531 ALC_RX_RING_SZ, alc_dmamap_cb, &ctx, 0);
1532 if (error != 0 || ctx.alc_busaddr == 0) {
1533 device_printf(sc->alc_dev,
1534 "could not load DMA'able memory for Rx ring.\n");
1537 sc->alc_rdata.alc_rx_ring_paddr = ctx.alc_busaddr;
1539 /* Allocate DMA'able memory and load the DMA map for Rx return ring. */
1540 error = bus_dmamem_alloc(sc->alc_cdata.alc_rr_ring_tag,
1541 (void **)&sc->alc_rdata.alc_rr_ring,
1542 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
1543 &sc->alc_cdata.alc_rr_ring_map);
1545 device_printf(sc->alc_dev,
1546 "could not allocate DMA'able memory for Rx return ring.\n");
1549 ctx.alc_busaddr = 0;
1550 error = bus_dmamap_load(sc->alc_cdata.alc_rr_ring_tag,
1551 sc->alc_cdata.alc_rr_ring_map, sc->alc_rdata.alc_rr_ring,
1552 ALC_RR_RING_SZ, alc_dmamap_cb, &ctx, 0);
1553 if (error != 0 || ctx.alc_busaddr == 0) {
1554 device_printf(sc->alc_dev,
1555 "could not load DMA'able memory for Tx ring.\n");
1558 sc->alc_rdata.alc_rr_ring_paddr = ctx.alc_busaddr;
1560 /* Allocate DMA'able memory and load the DMA map for CMB. */
1561 error = bus_dmamem_alloc(sc->alc_cdata.alc_cmb_tag,
1562 (void **)&sc->alc_rdata.alc_cmb,
1563 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
1564 &sc->alc_cdata.alc_cmb_map);
1566 device_printf(sc->alc_dev,
1567 "could not allocate DMA'able memory for CMB.\n");
1570 ctx.alc_busaddr = 0;
1571 error = bus_dmamap_load(sc->alc_cdata.alc_cmb_tag,
1572 sc->alc_cdata.alc_cmb_map, sc->alc_rdata.alc_cmb,
1573 ALC_CMB_SZ, alc_dmamap_cb, &ctx, 0);
1574 if (error != 0 || ctx.alc_busaddr == 0) {
1575 device_printf(sc->alc_dev,
1576 "could not load DMA'able memory for CMB.\n");
1579 sc->alc_rdata.alc_cmb_paddr = ctx.alc_busaddr;
1581 /* Allocate DMA'able memory and load the DMA map for SMB. */
1582 error = bus_dmamem_alloc(sc->alc_cdata.alc_smb_tag,
1583 (void **)&sc->alc_rdata.alc_smb,
1584 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
1585 &sc->alc_cdata.alc_smb_map);
1587 device_printf(sc->alc_dev,
1588 "could not allocate DMA'able memory for SMB.\n");
1591 ctx.alc_busaddr = 0;
1592 error = bus_dmamap_load(sc->alc_cdata.alc_smb_tag,
1593 sc->alc_cdata.alc_smb_map, sc->alc_rdata.alc_smb,
1594 ALC_SMB_SZ, alc_dmamap_cb, &ctx, 0);
1595 if (error != 0 || ctx.alc_busaddr == 0) {
1596 device_printf(sc->alc_dev,
1597 "could not load DMA'able memory for CMB.\n");
1600 sc->alc_rdata.alc_smb_paddr = ctx.alc_busaddr;
1602 /* Make sure we've not crossed 4GB boundary. */
1603 if (lowaddr != BUS_SPACE_MAXADDR_32BIT &&
1604 (error = alc_check_boundary(sc)) != 0) {
1605 device_printf(sc->alc_dev, "4GB boundary crossed, "
1606 "switching to 32bit DMA addressing mode.\n");
1609 * Limit max allowable DMA address space to 32bit
1612 lowaddr = BUS_SPACE_MAXADDR_32BIT;
1617 * Create Tx buffer parent tag.
1618 * AR813x/AR815x allows 64bit DMA addressing of Tx/Rx buffers
1619 * so it needs separate parent DMA tag as parent DMA address
1620 * space could be restricted to be within 32bit address space
1621 * by 4GB boundary crossing.
1623 error = bus_dma_tag_create(
1624 sc->alc_cdata.alc_parent_tag, /* parent */
1625 1, 0, /* alignment, boundary */
1626 BUS_SPACE_MAXADDR, /* lowaddr */
1627 BUS_SPACE_MAXADDR, /* highaddr */
1628 NULL, NULL, /* filter, filterarg */
1629 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
1631 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
1633 &sc->alc_cdata.alc_buffer_tag);
1635 device_printf(sc->alc_dev,
1636 "could not create parent buffer DMA tag.\n");
1640 /* Create DMA tag for Tx buffers. */
1641 error = bus_dma_tag_create(
1642 sc->alc_cdata.alc_buffer_tag, /* parent */
1643 1, 0, /* alignment, boundary */
1644 BUS_SPACE_MAXADDR, /* lowaddr */
1645 BUS_SPACE_MAXADDR, /* highaddr */
1646 NULL, NULL, /* filter, filterarg */
1647 ALC_TSO_MAXSIZE, /* maxsize */
1648 ALC_MAXTXSEGS, /* nsegments */
1649 ALC_TSO_MAXSEGSIZE, /* maxsegsize */
1651 &sc->alc_cdata.alc_tx_tag);
1653 device_printf(sc->alc_dev, "could not create Tx DMA tag.\n");
1657 /* Create DMA tag for Rx buffers. */
1658 error = bus_dma_tag_create(
1659 sc->alc_cdata.alc_buffer_tag, /* parent */
1660 ALC_RX_BUF_ALIGN, 0, /* alignment, boundary */
1661 BUS_SPACE_MAXADDR, /* lowaddr */
1662 BUS_SPACE_MAXADDR, /* highaddr */
1663 NULL, NULL, /* filter, filterarg */
1664 MCLBYTES, /* maxsize */
1666 MCLBYTES, /* maxsegsize */
1668 &sc->alc_cdata.alc_rx_tag);
1670 device_printf(sc->alc_dev, "could not create Rx DMA tag.\n");
1673 /* Create DMA maps for Tx buffers. */
1674 for (i = 0; i < ALC_TX_RING_CNT; i++) {
1675 txd = &sc->alc_cdata.alc_txdesc[i];
1677 txd->tx_dmamap = NULL;
1678 error = bus_dmamap_create(sc->alc_cdata.alc_tx_tag,
1679 BUS_DMA_WAITOK, &txd->tx_dmamap);
1681 device_printf(sc->alc_dev,
1682 "could not create Tx dmamap.\n");
1686 /* Create DMA maps for Rx buffers. */
1687 error = bus_dmamap_create(sc->alc_cdata.alc_rx_tag,
1689 &sc->alc_cdata.alc_rx_sparemap);
1691 device_printf(sc->alc_dev,
1692 "could not create spare Rx dmamap.\n");
1695 for (i = 0; i < ALC_RX_RING_CNT; i++) {
1696 rxd = &sc->alc_cdata.alc_rxdesc[i];
1698 rxd->rx_dmamap = NULL;
1699 error = bus_dmamap_create(sc->alc_cdata.alc_rx_tag,
1703 device_printf(sc->alc_dev,
1704 "could not create Rx dmamap.\n");
1714 alc_dma_free(struct alc_softc *sc)
1716 struct alc_txdesc *txd;
1717 struct alc_rxdesc *rxd;
1721 if (sc->alc_cdata.alc_tx_tag != NULL) {
1722 for (i = 0; i < ALC_TX_RING_CNT; i++) {
1723 txd = &sc->alc_cdata.alc_txdesc[i];
1724 if (txd->tx_dmamap != NULL) {
1725 bus_dmamap_destroy(sc->alc_cdata.alc_tx_tag,
1727 txd->tx_dmamap = NULL;
1730 bus_dma_tag_destroy(sc->alc_cdata.alc_tx_tag);
1731 sc->alc_cdata.alc_tx_tag = NULL;
1734 if (sc->alc_cdata.alc_rx_tag != NULL) {
1735 for (i = 0; i < ALC_RX_RING_CNT; i++) {
1736 rxd = &sc->alc_cdata.alc_rxdesc[i];
1737 if (rxd->rx_dmamap != NULL) {
1738 bus_dmamap_destroy(sc->alc_cdata.alc_rx_tag,
1740 rxd->rx_dmamap = NULL;
1743 if (sc->alc_cdata.alc_rx_sparemap != NULL) {
1744 bus_dmamap_destroy(sc->alc_cdata.alc_rx_tag,
1745 sc->alc_cdata.alc_rx_sparemap);
1746 sc->alc_cdata.alc_rx_sparemap = NULL;
1748 bus_dma_tag_destroy(sc->alc_cdata.alc_rx_tag);
1749 sc->alc_cdata.alc_rx_tag = NULL;
1751 /* Tx descriptor ring. */
1752 if (sc->alc_cdata.alc_tx_ring_tag != NULL) {
1753 if (sc->alc_cdata.alc_tx_ring_map != NULL)
1754 bus_dmamap_unload(sc->alc_cdata.alc_tx_ring_tag,
1755 sc->alc_cdata.alc_tx_ring_map);
1756 if (sc->alc_cdata.alc_tx_ring_map != NULL &&
1757 sc->alc_rdata.alc_tx_ring != NULL)
1758 bus_dmamem_free(sc->alc_cdata.alc_tx_ring_tag,
1759 sc->alc_rdata.alc_tx_ring,
1760 sc->alc_cdata.alc_tx_ring_map);
1761 sc->alc_rdata.alc_tx_ring = NULL;
1762 sc->alc_cdata.alc_tx_ring_map = NULL;
1763 bus_dma_tag_destroy(sc->alc_cdata.alc_tx_ring_tag);
1764 sc->alc_cdata.alc_tx_ring_tag = NULL;
1767 if (sc->alc_cdata.alc_rx_ring_tag != NULL) {
1768 if (sc->alc_cdata.alc_rx_ring_map != NULL)
1769 bus_dmamap_unload(sc->alc_cdata.alc_rx_ring_tag,
1770 sc->alc_cdata.alc_rx_ring_map);
1771 if (sc->alc_cdata.alc_rx_ring_map != NULL &&
1772 sc->alc_rdata.alc_rx_ring != NULL)
1773 bus_dmamem_free(sc->alc_cdata.alc_rx_ring_tag,
1774 sc->alc_rdata.alc_rx_ring,
1775 sc->alc_cdata.alc_rx_ring_map);
1776 sc->alc_rdata.alc_rx_ring = NULL;
1777 sc->alc_cdata.alc_rx_ring_map = NULL;
1778 bus_dma_tag_destroy(sc->alc_cdata.alc_rx_ring_tag);
1779 sc->alc_cdata.alc_rx_ring_tag = NULL;
1781 /* Rx return ring. */
1782 if (sc->alc_cdata.alc_rr_ring_tag != NULL) {
1783 if (sc->alc_cdata.alc_rr_ring_map != NULL)
1784 bus_dmamap_unload(sc->alc_cdata.alc_rr_ring_tag,
1785 sc->alc_cdata.alc_rr_ring_map);
1786 if (sc->alc_cdata.alc_rr_ring_map != NULL &&
1787 sc->alc_rdata.alc_rr_ring != NULL)
1788 bus_dmamem_free(sc->alc_cdata.alc_rr_ring_tag,
1789 sc->alc_rdata.alc_rr_ring,
1790 sc->alc_cdata.alc_rr_ring_map);
1791 sc->alc_rdata.alc_rr_ring = NULL;
1792 sc->alc_cdata.alc_rr_ring_map = NULL;
1793 bus_dma_tag_destroy(sc->alc_cdata.alc_rr_ring_tag);
1794 sc->alc_cdata.alc_rr_ring_tag = NULL;
1797 if (sc->alc_cdata.alc_cmb_tag != NULL) {
1798 if (sc->alc_cdata.alc_cmb_map != NULL)
1799 bus_dmamap_unload(sc->alc_cdata.alc_cmb_tag,
1800 sc->alc_cdata.alc_cmb_map);
1801 if (sc->alc_cdata.alc_cmb_map != NULL &&
1802 sc->alc_rdata.alc_cmb != NULL)
1803 bus_dmamem_free(sc->alc_cdata.alc_cmb_tag,
1804 sc->alc_rdata.alc_cmb,
1805 sc->alc_cdata.alc_cmb_map);
1806 sc->alc_rdata.alc_cmb = NULL;
1807 sc->alc_cdata.alc_cmb_map = NULL;
1808 bus_dma_tag_destroy(sc->alc_cdata.alc_cmb_tag);
1809 sc->alc_cdata.alc_cmb_tag = NULL;
1812 if (sc->alc_cdata.alc_smb_tag != NULL) {
1813 if (sc->alc_cdata.alc_smb_map != NULL)
1814 bus_dmamap_unload(sc->alc_cdata.alc_smb_tag,
1815 sc->alc_cdata.alc_smb_map);
1816 if (sc->alc_cdata.alc_smb_map != NULL &&
1817 sc->alc_rdata.alc_smb != NULL)
1818 bus_dmamem_free(sc->alc_cdata.alc_smb_tag,
1819 sc->alc_rdata.alc_smb,
1820 sc->alc_cdata.alc_smb_map);
1821 sc->alc_rdata.alc_smb = NULL;
1822 sc->alc_cdata.alc_smb_map = NULL;
1823 bus_dma_tag_destroy(sc->alc_cdata.alc_smb_tag);
1824 sc->alc_cdata.alc_smb_tag = NULL;
1826 if (sc->alc_cdata.alc_buffer_tag != NULL) {
1827 bus_dma_tag_destroy(sc->alc_cdata.alc_buffer_tag);
1828 sc->alc_cdata.alc_buffer_tag = NULL;
1830 if (sc->alc_cdata.alc_parent_tag != NULL) {
1831 bus_dma_tag_destroy(sc->alc_cdata.alc_parent_tag);
1832 sc->alc_cdata.alc_parent_tag = NULL;
1837 alc_shutdown(device_t dev)
1840 return (alc_suspend(dev));
1844 /* XXX: LINK SPEED */
1846 * Note, this driver resets the link speed to 10/100Mbps by
1847 * restarting auto-negotiation in suspend/shutdown phase but we
1848 * don't know whether that auto-negotiation would succeed or not
1849 * as driver has no control after powering off/suspend operation.
1850 * If the renegotiation fail WOL may not work. Running at 1Gbps
1851 * will draw more power than 375mA at 3.3V which is specified in
1852 * PCI specification and that would result in complete
1853 * shutdowning power to ethernet controller.
1856 * Save current negotiated media speed/duplex/flow-control to
1857 * softc and restore the same link again after resuming. PHY
1858 * handling such as power down/resetting to 100Mbps may be better
1859 * handled in suspend method in phy driver.
1862 alc_setlinkspeed(struct alc_softc *sc)
1864 struct mii_data *mii;
1867 mii = device_get_softc(sc->alc_miibus);
1870 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) ==
1871 (IFM_ACTIVE | IFM_AVALID)) {
1872 switch IFM_SUBTYPE(mii->mii_media_active) {
1883 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, MII_100T2CR, 0);
1884 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
1885 MII_ANAR, ANAR_TX_FD | ANAR_TX | ANAR_10_FD | ANAR_10 | ANAR_CSMA);
1886 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
1887 MII_BMCR, BMCR_RESET | BMCR_AUTOEN | BMCR_STARTNEG);
1891 * Poll link state until alc(4) get a 10/100Mbps link.
1893 for (i = 0; i < MII_ANEGTICKS_GIGE; i++) {
1895 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID))
1896 == (IFM_ACTIVE | IFM_AVALID)) {
1897 switch (IFM_SUBTYPE(
1898 mii->mii_media_active)) {
1908 pause("alclnk", hz);
1911 if (i == MII_ANEGTICKS_GIGE)
1912 device_printf(sc->alc_dev,
1913 "establishing a link failed, WOL may not work!");
1916 * No link, force MAC to have 100Mbps, full-duplex link.
1917 * This is the last resort and may/may not work.
1919 mii->mii_media_status = IFM_AVALID | IFM_ACTIVE;
1920 mii->mii_media_active = IFM_ETHER | IFM_100_TX | IFM_FDX;
1928 alc_setwol(struct alc_softc *sc)
1934 ALC_LOCK_ASSERT(sc);
1936 alc_disable_l0s_l1(sc);
1938 if ((sc->alc_flags & ALC_FLAG_PM) == 0) {
1940 CSR_WRITE_4(sc, ALC_WOL_CFG, 0);
1941 reg = CSR_READ_4(sc, ALC_PCIE_PHYMISC);
1942 reg |= PCIE_PHYMISC_FORCE_RCV_DET;
1943 CSR_WRITE_4(sc, ALC_PCIE_PHYMISC, reg);
1944 /* Force PHY power down. */
1946 CSR_WRITE_4(sc, ALC_MASTER_CFG,
1947 CSR_READ_4(sc, ALC_MASTER_CFG) | MASTER_CLK_SEL_DIS);
1951 if ((ifp->if_capenable & IFCAP_WOL) != 0) {
1952 if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0)
1953 alc_setlinkspeed(sc);
1954 CSR_WRITE_4(sc, ALC_MASTER_CFG,
1955 CSR_READ_4(sc, ALC_MASTER_CFG) & ~MASTER_CLK_SEL_DIS);
1959 if ((ifp->if_capenable & IFCAP_WOL_MAGIC) != 0)
1960 pmcs |= WOL_CFG_MAGIC | WOL_CFG_MAGIC_ENB;
1961 CSR_WRITE_4(sc, ALC_WOL_CFG, pmcs);
1962 reg = CSR_READ_4(sc, ALC_MAC_CFG);
1963 reg &= ~(MAC_CFG_DBG | MAC_CFG_PROMISC | MAC_CFG_ALLMULTI |
1965 if ((ifp->if_capenable & IFCAP_WOL_MCAST) != 0)
1966 reg |= MAC_CFG_ALLMULTI | MAC_CFG_BCAST;
1967 if ((ifp->if_capenable & IFCAP_WOL) != 0)
1968 reg |= MAC_CFG_RX_ENB;
1969 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
1971 reg = CSR_READ_4(sc, ALC_PCIE_PHYMISC);
1972 reg |= PCIE_PHYMISC_FORCE_RCV_DET;
1973 CSR_WRITE_4(sc, ALC_PCIE_PHYMISC, reg);
1974 if ((ifp->if_capenable & IFCAP_WOL) == 0) {
1975 /* WOL disabled, PHY power down. */
1977 CSR_WRITE_4(sc, ALC_MASTER_CFG,
1978 CSR_READ_4(sc, ALC_MASTER_CFG) | MASTER_CLK_SEL_DIS);
1982 pmstat = pci_read_config(sc->alc_dev,
1983 sc->alc_pmcap + PCIR_POWER_STATUS, 2);
1984 pmstat &= ~(PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE);
1985 if ((ifp->if_capenable & IFCAP_WOL) != 0)
1986 pmstat |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE;
1987 pci_write_config(sc->alc_dev,
1988 sc->alc_pmcap + PCIR_POWER_STATUS, pmstat, 2);
1993 alc_suspend(device_t dev)
1995 struct alc_softc *sc;
1997 sc = device_get_softc(dev);
2011 alc_resume(device_t dev)
2013 struct alc_softc *sc;
2017 sc = device_get_softc(dev);
2020 if ((sc->alc_flags & ALC_FLAG_PM) != 0) {
2021 /* Disable PME and clear PME status. */
2022 pmstat = pci_read_config(sc->alc_dev,
2023 sc->alc_pmcap + PCIR_POWER_STATUS, 2);
2024 if ((pmstat & PCIM_PSTAT_PMEENABLE) != 0) {
2025 pmstat &= ~PCIM_PSTAT_PMEENABLE;
2026 pci_write_config(sc->alc_dev,
2027 sc->alc_pmcap + PCIR_POWER_STATUS, pmstat, 2);
2033 if ((ifp->if_flags & IFF_UP) != 0) {
2034 ifp->if_flags &= ~IFF_RUNNING;
2035 alc_init_locked(sc);
2043 alc_encap(struct alc_softc *sc, struct mbuf **m_head)
2045 struct alc_txdesc *txd, *txd_last;
2046 struct tx_desc *desc;
2050 bus_dma_segment_t txsegs[ALC_MAXTXSEGS];
2052 uint32_t cflags, hdrlen, ip_off, poff, vtag;
2053 int error, idx, nsegs, prod;
2055 ALC_LOCK_ASSERT(sc);
2057 M_ASSERTPKTHDR((*m_head));
2065 if ((m->m_pkthdr.csum_flags & (ALC_CSUM_FEATURES | CSUM_TSO)) != 0) {
2067 * AR813x/AR815x requires offset of TCP/UDP header in its
2068 * Tx descriptor to perform Tx checksum offloading. TSO
2069 * also requires TCP header offset and modification of
2070 * IP/TCP header. This kind of operation takes many CPU
2071 * cycles on FreeBSD so fast host CPU is required to get
2072 * smooth TSO performance.
2074 struct ether_header *eh;
2076 if (M_WRITABLE(m) == 0) {
2077 /* Get a writable copy. */
2078 m = m_dup(*m_head, MB_DONTWAIT);
2079 /* Release original mbufs. */
2088 ip_off = sizeof(struct ether_header);
2089 m = m_pullup(m, ip_off + sizeof(struct ip));
2094 eh = mtod(m, struct ether_header *);
2096 * Check if hardware VLAN insertion is off.
2097 * Additional check for LLC/SNAP frame?
2099 if (eh->ether_type == htons(ETHERTYPE_VLAN)) {
2100 ip_off = sizeof(struct ether_vlan_header);
2101 m = m_pullup(m, ip_off);
2107 m = m_pullup(m, ip_off + sizeof(struct ip));
2112 ip = (struct ip *)(mtod(m, char *) + ip_off);
2113 poff = ip_off + (ip->ip_hl << 2);
2115 if ((m->m_pkthdr.csum_flags & CSUM_TSO) != 0) {
2116 m = m_pullup(m, poff + sizeof(struct tcphdr));
2121 tcp = (struct tcphdr *)(mtod(m, char *) + poff);
2122 m = m_pullup(m, poff + (tcp->th_off << 2));
2128 * Due to strict adherence of Microsoft NDIS
2129 * Large Send specification, hardware expects
2130 * a pseudo TCP checksum inserted by upper
2131 * stack. Unfortunately the pseudo TCP
2132 * checksum that NDIS refers to does not include
2133 * TCP payload length so driver should recompute
2134 * the pseudo checksum here. Hopefully this
2135 * wouldn't be much burden on modern CPUs.
2137 * Reset IP checksum and recompute TCP pseudo
2138 * checksum as NDIS specification said.
2141 tcp->th_sum = in_pseudo(ip->ip_src.s_addr,
2142 ip->ip_dst.s_addr, htons(IPPROTO_TCP));
2148 prod = sc->alc_cdata.alc_tx_prod;
2149 txd = &sc->alc_cdata.alc_txdesc[prod];
2151 map = txd->tx_dmamap;
2153 error = bus_dmamap_load_mbuf_defrag(
2154 sc->alc_cdata.alc_tx_tag, map, m_head,
2155 txsegs, ALC_MAXTXSEGS, &nsegs, BUS_DMA_NOWAIT);
2167 /* Check descriptor overrun. */
2168 if (sc->alc_cdata.alc_tx_cnt + nsegs >= ALC_TX_RING_CNT - 3) {
2169 bus_dmamap_unload(sc->alc_cdata.alc_tx_tag, map);
2172 bus_dmamap_sync(sc->alc_cdata.alc_tx_tag, map, BUS_DMASYNC_PREWRITE);
2175 cflags = TD_ETHERNET;
2179 /* Configure VLAN hardware tag insertion. */
2180 if ((m->m_flags & M_VLANTAG) != 0) {
2181 vtag = htons(m->m_pkthdr.ether_vlantag);
2182 vtag = (vtag << TD_VLAN_SHIFT) & TD_VLAN_MASK;
2183 cflags |= TD_INS_VLAN_TAG;
2185 /* Configure Tx checksum offload. */
2186 if ((m->m_pkthdr.csum_flags & ALC_CSUM_FEATURES) != 0) {
2187 #ifdef ALC_USE_CUSTOM_CSUM
2188 cflags |= TD_CUSTOM_CSUM;
2189 /* Set checksum start offset. */
2190 cflags |= ((poff >> 1) << TD_PLOAD_OFFSET_SHIFT) &
2191 TD_PLOAD_OFFSET_MASK;
2192 /* Set checksum insertion position of TCP/UDP. */
2193 cflags |= (((poff + m->m_pkthdr.csum_data) >> 1) <<
2194 TD_CUSTOM_CSUM_OFFSET_SHIFT) & TD_CUSTOM_CSUM_OFFSET_MASK;
2196 if ((m->m_pkthdr.csum_flags & CSUM_IP) != 0)
2197 cflags |= TD_IPCSUM;
2198 if ((m->m_pkthdr.csum_flags & CSUM_TCP) != 0)
2199 cflags |= TD_TCPCSUM;
2200 if ((m->m_pkthdr.csum_flags & CSUM_UDP) != 0)
2201 cflags |= TD_UDPCSUM;
2202 /* Set TCP/UDP header offset. */
2203 cflags |= (poff << TD_L4HDR_OFFSET_SHIFT) &
2204 TD_L4HDR_OFFSET_MASK;
2206 } else if ((m->m_pkthdr.csum_flags & CSUM_TSO) != 0) {
2207 /* Request TSO and set MSS. */
2208 cflags |= TD_TSO | TD_TSO_DESCV1;
2211 cflags |= ((uint32_t)m->m_pkthdr.tso_segsz << TD_MSS_SHIFT) &
2213 /* Set TCP header offset. */
2215 cflags |= (poff << TD_TCPHDR_OFFSET_SHIFT) &
2216 TD_TCPHDR_OFFSET_MASK;
2218 * AR813x/AR815x requires the first buffer should
2219 * only hold IP/TCP header data. Payload should
2220 * be handled in other descriptors.
2222 hdrlen = poff + (tcp->th_off << 2);
2223 desc = &sc->alc_rdata.alc_tx_ring[prod];
2224 desc->len = htole32(TX_BYTES(hdrlen | vtag));
2225 desc->flags = htole32(cflags);
2226 desc->addr = htole64(txsegs[0].ds_addr);
2227 sc->alc_cdata.alc_tx_cnt++;
2228 ALC_DESC_INC(prod, ALC_TX_RING_CNT);
2229 if (m->m_len - hdrlen > 0) {
2230 /* Handle remaining payload of the first fragment. */
2231 desc = &sc->alc_rdata.alc_tx_ring[prod];
2232 desc->len = htole32(TX_BYTES((m->m_len - hdrlen) |
2234 desc->flags = htole32(cflags);
2235 desc->addr = htole64(txsegs[0].ds_addr + hdrlen);
2236 sc->alc_cdata.alc_tx_cnt++;
2237 ALC_DESC_INC(prod, ALC_TX_RING_CNT);
2239 /* Handle remaining fragments. */
2242 for (; idx < nsegs; idx++) {
2243 desc = &sc->alc_rdata.alc_tx_ring[prod];
2244 desc->len = htole32(TX_BYTES(txsegs[idx].ds_len) | vtag);
2245 desc->flags = htole32(cflags);
2246 desc->addr = htole64(txsegs[idx].ds_addr);
2247 sc->alc_cdata.alc_tx_cnt++;
2248 ALC_DESC_INC(prod, ALC_TX_RING_CNT);
2250 /* Update producer index. */
2251 sc->alc_cdata.alc_tx_prod = prod;
2253 /* Finally set EOP on the last descriptor. */
2254 prod = (prod + ALC_TX_RING_CNT - 1) % ALC_TX_RING_CNT;
2255 desc = &sc->alc_rdata.alc_tx_ring[prod];
2256 desc->flags |= htole32(TD_EOP);
2258 /* Swap dmamap of the first and the last. */
2259 txd = &sc->alc_cdata.alc_txdesc[prod];
2260 map = txd_last->tx_dmamap;
2261 txd_last->tx_dmamap = txd->tx_dmamap;
2262 txd->tx_dmamap = map;
2269 alc_tx_task(void *arg, int pending)
2273 ifp = (struct ifnet *)arg;
2278 alc_start(struct ifnet *ifp)
2280 struct alc_softc *sc;
2281 struct mbuf *m_head;
2288 /* Reclaim transmitted frames. */
2289 if (sc->alc_cdata.alc_tx_cnt >= ALC_TX_DESC_HIWAT)
2292 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) {
2296 if ((sc->alc_flags & ALC_FLAG_LINK) == 0) {
2297 ifq_purge(&ifp->if_snd);
2302 for (enq = 0; !ifq_is_empty(&ifp->if_snd); ) {
2303 m_head = ifq_dequeue(&ifp->if_snd, NULL);
2307 * Pack the data into the transmit ring. If we
2308 * don't have room, set the OACTIVE flag and wait
2309 * for the NIC to drain the ring.
2311 if (alc_encap(sc, &m_head)) {
2314 ifq_prepend(&ifp->if_snd, m_head);
2315 ifp->if_flags |= IFF_OACTIVE;
2321 * If there's a BPF listener, bounce a copy of this frame
2324 ETHER_BPF_MTAP(ifp, m_head);
2328 /* Sync descriptors. */
2329 bus_dmamap_sync(sc->alc_cdata.alc_tx_ring_tag,
2330 sc->alc_cdata.alc_tx_ring_map, BUS_DMASYNC_PREWRITE);
2331 /* Kick. Assume we're using normal Tx priority queue. */
2332 CSR_WRITE_4(sc, ALC_MBOX_TD_PROD_IDX,
2333 (sc->alc_cdata.alc_tx_prod <<
2334 MBOX_TD_PROD_LO_IDX_SHIFT) &
2335 MBOX_TD_PROD_LO_IDX_MASK);
2336 /* Set a timeout in case the chip goes out to lunch. */
2337 sc->alc_watchdog_timer = ALC_TX_TIMEOUT;
2344 alc_watchdog(struct alc_softc *sc)
2348 ALC_LOCK_ASSERT(sc);
2350 if (sc->alc_watchdog_timer == 0 || --sc->alc_watchdog_timer)
2354 if ((sc->alc_flags & ALC_FLAG_LINK) == 0) {
2355 if_printf(sc->alc_ifp, "watchdog timeout (lost link)\n");
2357 ifp->if_flags &= ~IFF_RUNNING;
2358 alc_init_locked(sc);
2361 if_printf(sc->alc_ifp, "watchdog timeout -- resetting\n");
2363 ifp->if_flags &= ~IFF_RUNNING;
2364 alc_init_locked(sc);
2365 if (!ifq_is_empty(&ifp->if_snd))
2366 taskqueue_enqueue(sc->alc_tq, &sc->alc_tx_task);
2370 alc_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *cr)
2372 struct alc_softc *sc;
2374 struct mii_data *mii;
2379 ifr = (struct ifreq *)data;
2383 if (ifr->ifr_mtu < ETHERMIN ||
2384 ifr->ifr_mtu > (sc->alc_ident->max_framelen -
2385 sizeof(struct ether_vlan_header) - ETHER_CRC_LEN) ||
2386 ((sc->alc_flags & ALC_FLAG_JUMBO) == 0 &&
2387 ifr->ifr_mtu > ETHERMTU)) {
2389 } else if (ifp->if_mtu != ifr->ifr_mtu) {
2391 ifp->if_mtu = ifr->ifr_mtu;
2392 /* AR813x/AR815x has 13 bits MSS field. */
2393 if (ifp->if_mtu > ALC_TSO_MTU &&
2394 (ifp->if_capenable & IFCAP_TSO4) != 0) {
2395 ifp->if_capenable &= ~IFCAP_TSO4;
2396 ifp->if_hwassist &= ~CSUM_TSO;
2403 if ((ifp->if_flags & IFF_UP) != 0) {
2404 if ((ifp->if_flags & IFF_RUNNING) != 0 &&
2405 ((ifp->if_flags ^ sc->alc_if_flags) &
2406 (IFF_PROMISC | IFF_ALLMULTI)) != 0)
2408 else if ((sc->alc_flags & ALC_FLAG_DETACH) == 0)
2409 alc_init_locked(sc);
2410 } else if ((ifp->if_flags & IFF_RUNNING) != 0)
2412 sc->alc_if_flags = ifp->if_flags;
2418 if ((ifp->if_flags & IFF_RUNNING) != 0)
2424 mii = device_get_softc(sc->alc_miibus);
2425 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, cmd);
2429 mask = ifr->ifr_reqcap ^ ifp->if_capenable;
2430 if ((mask & IFCAP_TXCSUM) != 0 &&
2431 (ifp->if_capabilities & IFCAP_TXCSUM) != 0) {
2432 ifp->if_capenable ^= IFCAP_TXCSUM;
2433 if ((ifp->if_capenable & IFCAP_TXCSUM) != 0)
2434 ifp->if_hwassist |= ALC_CSUM_FEATURES;
2436 ifp->if_hwassist &= ~ALC_CSUM_FEATURES;
2438 if ((mask & IFCAP_TSO4) != 0 &&
2439 (ifp->if_capabilities & IFCAP_TSO4) != 0) {
2440 ifp->if_capenable ^= IFCAP_TSO4;
2441 if ((ifp->if_capenable & IFCAP_TSO4) != 0) {
2442 /* AR813x/AR815x has 13 bits MSS field. */
2443 if (ifp->if_mtu > ALC_TSO_MTU) {
2444 ifp->if_capenable &= ~IFCAP_TSO4;
2445 ifp->if_hwassist &= ~CSUM_TSO;
2447 ifp->if_hwassist |= CSUM_TSO;
2449 ifp->if_hwassist &= ~CSUM_TSO;
2453 if ((mask & IFCAP_WOL_MCAST) != 0 &&
2454 (ifp->if_capabilities & IFCAP_WOL_MCAST) != 0)
2455 ifp->if_capenable ^= IFCAP_WOL_MCAST;
2456 if ((mask & IFCAP_WOL_MAGIC) != 0 &&
2457 (ifp->if_capabilities & IFCAP_WOL_MAGIC) != 0)
2458 ifp->if_capenable ^= IFCAP_WOL_MAGIC;
2460 if ((mask & IFCAP_VLAN_HWTAGGING) != 0 &&
2461 (ifp->if_capabilities & IFCAP_VLAN_HWTAGGING) != 0) {
2462 ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING;
2465 if ((mask & IFCAP_VLAN_HWCSUM) != 0 &&
2466 (ifp->if_capabilities & IFCAP_VLAN_HWCSUM) != 0)
2467 ifp->if_capenable ^= IFCAP_VLAN_HWCSUM;
2468 if ((mask & IFCAP_VLAN_HWTSO) != 0 &&
2469 (ifp->if_capabilities & IFCAP_VLAN_HWTSO) != 0)
2470 ifp->if_capenable ^= IFCAP_VLAN_HWTSO;
2472 * VLAN hardware tagging is required to do checksum
2473 * offload or TSO on VLAN interface. Checksum offload
2474 * on VLAN interface also requires hardware checksum
2475 * offload of parent interface.
2477 if ((ifp->if_capenable & IFCAP_TXCSUM) == 0)
2478 ifp->if_capenable &= ~IFCAP_VLAN_HWCSUM;
2479 if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) == 0)
2480 ifp->if_capenable &=
2481 ~(IFCAP_VLAN_HWTSO | IFCAP_VLAN_HWCSUM);
2483 // XXX VLAN_CAPABILITIES(ifp);
2486 error = ether_ioctl(ifp, cmd, data);
2494 alc_mac_config(struct alc_softc *sc)
2496 struct mii_data *mii;
2499 ALC_LOCK_ASSERT(sc);
2501 mii = device_get_softc(sc->alc_miibus);
2502 reg = CSR_READ_4(sc, ALC_MAC_CFG);
2503 reg &= ~(MAC_CFG_FULL_DUPLEX | MAC_CFG_TX_FC | MAC_CFG_RX_FC |
2504 MAC_CFG_SPEED_MASK);
2505 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151 ||
2506 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2 ||
2507 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2) {
2508 reg |= MAC_CFG_HASH_ALG_CRC32 | MAC_CFG_SPEED_MODE_SW;
2510 /* Reprogram MAC with resolved speed/duplex. */
2511 switch (IFM_SUBTYPE(mii->mii_media_active)) {
2514 reg |= MAC_CFG_SPEED_10_100;
2517 reg |= MAC_CFG_SPEED_1000;
2520 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) {
2521 reg |= MAC_CFG_FULL_DUPLEX;
2523 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_TXPAUSE) != 0)
2524 reg |= MAC_CFG_TX_FC;
2525 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_RXPAUSE) != 0)
2526 reg |= MAC_CFG_RX_FC;
2529 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
2533 alc_stats_clear(struct alc_softc *sc)
2535 struct smb sb, *smb;
2539 if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0) {
2540 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag,
2541 sc->alc_cdata.alc_smb_map,
2542 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
2543 smb = sc->alc_rdata.alc_smb;
2544 /* Update done, clear. */
2546 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag,
2547 sc->alc_cdata.alc_smb_map,
2548 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
2550 for (reg = &sb.rx_frames, i = 0; reg <= &sb.rx_pkts_filtered;
2552 CSR_READ_4(sc, ALC_RX_MIB_BASE + i);
2553 i += sizeof(uint32_t);
2555 /* Read Tx statistics. */
2556 for (reg = &sb.tx_frames, i = 0; reg <= &sb.tx_mcast_bytes;
2558 CSR_READ_4(sc, ALC_TX_MIB_BASE + i);
2559 i += sizeof(uint32_t);
2565 alc_stats_update(struct alc_softc *sc)
2567 struct alc_hw_stats *stat;
2568 struct smb sb, *smb;
2573 ALC_LOCK_ASSERT(sc);
2576 stat = &sc->alc_stats;
2577 if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0) {
2578 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag,
2579 sc->alc_cdata.alc_smb_map,
2580 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
2581 smb = sc->alc_rdata.alc_smb;
2582 if (smb->updated == 0)
2586 /* Read Rx statistics. */
2587 for (reg = &sb.rx_frames, i = 0; reg <= &sb.rx_pkts_filtered;
2589 *reg = CSR_READ_4(sc, ALC_RX_MIB_BASE + i);
2590 i += sizeof(uint32_t);
2592 /* Read Tx statistics. */
2593 for (reg = &sb.tx_frames, i = 0; reg <= &sb.tx_mcast_bytes;
2595 *reg = CSR_READ_4(sc, ALC_TX_MIB_BASE + i);
2596 i += sizeof(uint32_t);
2601 stat->rx_frames += smb->rx_frames;
2602 stat->rx_bcast_frames += smb->rx_bcast_frames;
2603 stat->rx_mcast_frames += smb->rx_mcast_frames;
2604 stat->rx_pause_frames += smb->rx_pause_frames;
2605 stat->rx_control_frames += smb->rx_control_frames;
2606 stat->rx_crcerrs += smb->rx_crcerrs;
2607 stat->rx_lenerrs += smb->rx_lenerrs;
2608 stat->rx_bytes += smb->rx_bytes;
2609 stat->rx_runts += smb->rx_runts;
2610 stat->rx_fragments += smb->rx_fragments;
2611 stat->rx_pkts_64 += smb->rx_pkts_64;
2612 stat->rx_pkts_65_127 += smb->rx_pkts_65_127;
2613 stat->rx_pkts_128_255 += smb->rx_pkts_128_255;
2614 stat->rx_pkts_256_511 += smb->rx_pkts_256_511;
2615 stat->rx_pkts_512_1023 += smb->rx_pkts_512_1023;
2616 stat->rx_pkts_1024_1518 += smb->rx_pkts_1024_1518;
2617 stat->rx_pkts_1519_max += smb->rx_pkts_1519_max;
2618 stat->rx_pkts_truncated += smb->rx_pkts_truncated;
2619 stat->rx_fifo_oflows += smb->rx_fifo_oflows;
2620 stat->rx_rrs_errs += smb->rx_rrs_errs;
2621 stat->rx_alignerrs += smb->rx_alignerrs;
2622 stat->rx_bcast_bytes += smb->rx_bcast_bytes;
2623 stat->rx_mcast_bytes += smb->rx_mcast_bytes;
2624 stat->rx_pkts_filtered += smb->rx_pkts_filtered;
2627 stat->tx_frames += smb->tx_frames;
2628 stat->tx_bcast_frames += smb->tx_bcast_frames;
2629 stat->tx_mcast_frames += smb->tx_mcast_frames;
2630 stat->tx_pause_frames += smb->tx_pause_frames;
2631 stat->tx_excess_defer += smb->tx_excess_defer;
2632 stat->tx_control_frames += smb->tx_control_frames;
2633 stat->tx_deferred += smb->tx_deferred;
2634 stat->tx_bytes += smb->tx_bytes;
2635 stat->tx_pkts_64 += smb->tx_pkts_64;
2636 stat->tx_pkts_65_127 += smb->tx_pkts_65_127;
2637 stat->tx_pkts_128_255 += smb->tx_pkts_128_255;
2638 stat->tx_pkts_256_511 += smb->tx_pkts_256_511;
2639 stat->tx_pkts_512_1023 += smb->tx_pkts_512_1023;
2640 stat->tx_pkts_1024_1518 += smb->tx_pkts_1024_1518;
2641 stat->tx_pkts_1519_max += smb->tx_pkts_1519_max;
2642 stat->tx_single_colls += smb->tx_single_colls;
2643 stat->tx_multi_colls += smb->tx_multi_colls;
2644 stat->tx_late_colls += smb->tx_late_colls;
2645 stat->tx_excess_colls += smb->tx_excess_colls;
2646 stat->tx_abort += smb->tx_abort;
2647 stat->tx_underrun += smb->tx_underrun;
2648 stat->tx_desc_underrun += smb->tx_desc_underrun;
2649 stat->tx_lenerrs += smb->tx_lenerrs;
2650 stat->tx_pkts_truncated += smb->tx_pkts_truncated;
2651 stat->tx_bcast_bytes += smb->tx_bcast_bytes;
2652 stat->tx_mcast_bytes += smb->tx_mcast_bytes;
2654 /* Update counters in ifnet. */
2655 ifp->if_opackets += smb->tx_frames;
2657 ifp->if_collisions += smb->tx_single_colls +
2658 smb->tx_multi_colls * 2 + smb->tx_late_colls +
2659 smb->tx_abort * HDPX_CFG_RETRY_DEFAULT;
2663 * tx_pkts_truncated counter looks suspicious. It constantly
2664 * increments with no sign of Tx errors. This may indicate
2665 * the counter name is not correct one so I've removed the
2666 * counter in output errors.
2668 ifp->if_oerrors += smb->tx_abort + smb->tx_late_colls +
2671 ifp->if_ipackets += smb->rx_frames;
2673 ifp->if_ierrors += smb->rx_crcerrs + smb->rx_lenerrs +
2674 smb->rx_runts + smb->rx_pkts_truncated +
2675 smb->rx_fifo_oflows + smb->rx_rrs_errs +
2678 if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0) {
2679 /* Update done, clear. */
2681 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag,
2682 sc->alc_cdata.alc_smb_map,
2683 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
2690 struct alc_softc *sc;
2693 sc = (struct alc_softc *)arg;
2695 status = CSR_READ_4(sc, ALC_INTR_STATUS);
2696 if ((status & ALC_INTRS) == 0) {
2699 /* Disable interrupts. */
2700 CSR_WRITE_4(sc, ALC_INTR_STATUS, INTR_DIS_INT);
2701 taskqueue_enqueue(sc->alc_tq, &sc->alc_int_task);
2707 alc_int_task(void *arg, int pending)
2709 struct alc_softc *sc;
2714 sc = (struct alc_softc *)arg;
2717 status = CSR_READ_4(sc, ALC_INTR_STATUS);
2718 more = atomic_readandclear_32(&sc->alc_morework);
2720 status |= INTR_RX_PKT;
2721 if ((status & ALC_INTRS) == 0)
2724 /* Acknowledge interrupts but still disable interrupts. */
2725 CSR_WRITE_4(sc, ALC_INTR_STATUS, status | INTR_DIS_INT);
2728 if ((ifp->if_flags & IFF_RUNNING) != 0) {
2729 if ((status & INTR_RX_PKT) != 0) {
2730 more = alc_rxintr(sc, sc->alc_process_limit);
2732 atomic_set_int(&sc->alc_morework, 1);
2733 else if (more == EIO) {
2735 ifp->if_flags &= ~IFF_RUNNING;
2736 alc_init_locked(sc);
2741 if ((status & (INTR_DMA_RD_TO_RST | INTR_DMA_WR_TO_RST |
2742 INTR_TXQ_TO_RST)) != 0) {
2743 if ((status & INTR_DMA_RD_TO_RST) != 0)
2744 device_printf(sc->alc_dev,
2745 "DMA read error! -- resetting\n");
2746 if ((status & INTR_DMA_WR_TO_RST) != 0)
2747 device_printf(sc->alc_dev,
2748 "DMA write error! -- resetting\n");
2749 if ((status & INTR_TXQ_TO_RST) != 0)
2750 device_printf(sc->alc_dev,
2751 "TxQ reset! -- resetting\n");
2753 ifp->if_flags &= ~IFF_RUNNING;
2754 alc_init_locked(sc);
2758 if ((ifp->if_flags & IFF_RUNNING) != 0 &&
2759 !ifq_is_empty(&ifp->if_snd))
2760 taskqueue_enqueue(sc->alc_tq, &sc->alc_tx_task);
2763 if (more == EAGAIN ||
2764 (CSR_READ_4(sc, ALC_INTR_STATUS) & ALC_INTRS) != 0) {
2765 taskqueue_enqueue(sc->alc_tq, &sc->alc_int_task);
2770 if ((ifp->if_flags & IFF_RUNNING) != 0) {
2771 /* Re-enable interrupts if we're running. */
2772 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0x7FFFFFFF);
2777 alc_txeof(struct alc_softc *sc)
2780 struct alc_txdesc *txd;
2781 uint32_t cons, prod;
2784 ALC_LOCK_ASSERT(sc);
2788 if (sc->alc_cdata.alc_tx_cnt == 0)
2790 bus_dmamap_sync(sc->alc_cdata.alc_tx_ring_tag,
2791 sc->alc_cdata.alc_tx_ring_map, BUS_DMASYNC_POSTWRITE);
2792 if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0) {
2793 bus_dmamap_sync(sc->alc_cdata.alc_cmb_tag,
2794 sc->alc_cdata.alc_cmb_map, BUS_DMASYNC_POSTREAD);
2795 prod = sc->alc_rdata.alc_cmb->cons;
2797 prod = CSR_READ_4(sc, ALC_MBOX_TD_CONS_IDX);
2798 /* Assume we're using normal Tx priority queue. */
2799 prod = (prod & MBOX_TD_CONS_LO_IDX_MASK) >>
2800 MBOX_TD_CONS_LO_IDX_SHIFT;
2801 cons = sc->alc_cdata.alc_tx_cons;
2803 * Go through our Tx list and free mbufs for those
2804 * frames which have been transmitted.
2806 for (prog = 0; cons != prod; prog++,
2807 ALC_DESC_INC(cons, ALC_TX_RING_CNT)) {
2808 if (sc->alc_cdata.alc_tx_cnt <= 0)
2811 ifp->if_flags &= ~IFF_OACTIVE;
2812 sc->alc_cdata.alc_tx_cnt--;
2813 txd = &sc->alc_cdata.alc_txdesc[cons];
2814 if (txd->tx_m != NULL) {
2815 /* Reclaim transmitted mbufs. */
2816 bus_dmamap_sync(sc->alc_cdata.alc_tx_tag,
2817 txd->tx_dmamap, BUS_DMASYNC_POSTWRITE);
2818 bus_dmamap_unload(sc->alc_cdata.alc_tx_tag,
2825 if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0)
2826 bus_dmamap_sync(sc->alc_cdata.alc_cmb_tag,
2827 sc->alc_cdata.alc_cmb_map, BUS_DMASYNC_PREREAD);
2828 sc->alc_cdata.alc_tx_cons = cons;
2830 * Unarm watchdog timer only when there is no pending
2831 * frames in Tx queue.
2833 if (sc->alc_cdata.alc_tx_cnt == 0)
2834 sc->alc_watchdog_timer = 0;
2838 alc_newbuf(struct alc_softc *sc, struct alc_rxdesc *rxd)
2841 bus_dma_segment_t segs[1];
2846 m = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR);
2849 m->m_len = m->m_pkthdr.len = RX_BUF_SIZE_MAX;
2850 #ifndef __NO_STRICT_ALIGNMENT
2851 m_adj(m, sizeof(uint64_t));
2854 error = bus_dmamap_load_mbuf_segment(
2855 sc->alc_cdata.alc_rx_tag,
2856 sc->alc_cdata.alc_rx_sparemap,
2857 m, segs, 1, &nsegs, BUS_DMA_NOWAIT);
2862 KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs));
2864 if (rxd->rx_m != NULL) {
2865 bus_dmamap_sync(sc->alc_cdata.alc_rx_tag, rxd->rx_dmamap,
2866 BUS_DMASYNC_POSTREAD);
2867 bus_dmamap_unload(sc->alc_cdata.alc_rx_tag, rxd->rx_dmamap);
2869 map = rxd->rx_dmamap;
2870 rxd->rx_dmamap = sc->alc_cdata.alc_rx_sparemap;
2871 sc->alc_cdata.alc_rx_sparemap = map;
2872 bus_dmamap_sync(sc->alc_cdata.alc_rx_tag, rxd->rx_dmamap,
2873 BUS_DMASYNC_PREREAD);
2875 rxd->rx_desc->addr = htole64(segs[0].ds_addr);
2880 alc_rxintr(struct alc_softc *sc, int count)
2883 struct rx_rdesc *rrd;
2884 uint32_t nsegs, status;
2887 bus_dmamap_sync(sc->alc_cdata.alc_rr_ring_tag,
2888 sc->alc_cdata.alc_rr_ring_map,
2889 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
2890 bus_dmamap_sync(sc->alc_cdata.alc_rx_ring_tag,
2891 sc->alc_cdata.alc_rx_ring_map, BUS_DMASYNC_POSTWRITE);
2892 rr_cons = sc->alc_cdata.alc_rr_cons;
2894 for (prog = 0; (ifp->if_flags & IFF_RUNNING) != 0;) {
2897 rrd = &sc->alc_rdata.alc_rr_ring[rr_cons];
2898 status = le32toh(rrd->status);
2899 if ((status & RRD_VALID) == 0)
2901 nsegs = RRD_RD_CNT(le32toh(rrd->rdinfo));
2903 /* This should not happen! */
2904 device_printf(sc->alc_dev,
2905 "unexpected segment count -- resetting\n");
2909 /* Clear Rx return status. */
2911 ALC_DESC_INC(rr_cons, ALC_RR_RING_CNT);
2912 sc->alc_cdata.alc_rx_cons += nsegs;
2913 sc->alc_cdata.alc_rx_cons %= ALC_RR_RING_CNT;
2918 /* Update the consumer index. */
2919 sc->alc_cdata.alc_rr_cons = rr_cons;
2920 /* Sync Rx return descriptors. */
2921 bus_dmamap_sync(sc->alc_cdata.alc_rr_ring_tag,
2922 sc->alc_cdata.alc_rr_ring_map,
2923 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
2925 * Sync updated Rx descriptors such that controller see
2926 * modified buffer addresses.
2928 bus_dmamap_sync(sc->alc_cdata.alc_rx_ring_tag,
2929 sc->alc_cdata.alc_rx_ring_map, BUS_DMASYNC_PREWRITE);
2931 * Let controller know availability of new Rx buffers.
2932 * Since alc(4) use RXQ_CFG_RD_BURST_DEFAULT descriptors
2933 * it may be possible to update ALC_MBOX_RD0_PROD_IDX
2934 * only when Rx buffer pre-fetching is required. In
2935 * addition we already set ALC_RX_RD_FREE_THRESH to
2936 * RX_RD_FREE_THRESH_LO_DEFAULT descriptors. However
2937 * it still seems that pre-fetching needs more
2940 CSR_WRITE_4(sc, ALC_MBOX_RD0_PROD_IDX,
2941 sc->alc_cdata.alc_rx_cons);
2944 return (count > 0 ? 0 : EAGAIN);
2947 #ifndef __NO_STRICT_ALIGNMENT
2948 static struct mbuf *
2949 alc_fixup_rx(struct ifnet *ifp, struct mbuf *m)
2953 uint16_t *src, *dst;
2955 src = mtod(m, uint16_t *);
2958 if (m->m_next == NULL) {
2959 for (i = 0; i < (m->m_len / sizeof(uint16_t) + 1); i++)
2965 * Append a new mbuf to received mbuf chain and copy ethernet
2966 * header from the mbuf chain. This can save lots of CPU
2967 * cycles for jumbo frame.
2969 MGETHDR(n, MB_DONTWAIT, MT_DATA);
2975 bcopy(m->m_data, n->m_data, ETHER_HDR_LEN);
2976 m->m_data += ETHER_HDR_LEN;
2977 m->m_len -= ETHER_HDR_LEN;
2978 n->m_len = ETHER_HDR_LEN;
2979 M_MOVE_PKTHDR(n, m);
2985 /* Receive a frame. */
2987 alc_rxeof(struct alc_softc *sc, struct rx_rdesc *rrd)
2989 struct alc_rxdesc *rxd;
2991 struct mbuf *mp, *m;
2992 uint32_t rdinfo, status, vtag;
2993 int count, nsegs, rx_cons;
2996 status = le32toh(rrd->status);
2997 rdinfo = le32toh(rrd->rdinfo);
2998 rx_cons = RRD_RD_IDX(rdinfo);
2999 nsegs = RRD_RD_CNT(rdinfo);
3001 sc->alc_cdata.alc_rxlen = RRD_BYTES(status);
3002 if ((status & (RRD_ERR_SUM | RRD_ERR_LENGTH)) != 0) {
3004 * We want to pass the following frames to upper
3005 * layer regardless of error status of Rx return
3008 * o IP/TCP/UDP checksum is bad.
3009 * o frame length and protocol specific length
3012 * Force network stack compute checksum for
3015 status |= RRD_TCP_UDPCSUM_NOK | RRD_IPCSUM_NOK;
3016 if ((RRD_ERR_CRC | RRD_ERR_ALIGN | RRD_ERR_TRUNC |
3021 for (count = 0; count < nsegs; count++,
3022 ALC_DESC_INC(rx_cons, ALC_RX_RING_CNT)) {
3023 rxd = &sc->alc_cdata.alc_rxdesc[rx_cons];
3025 /* Add a new receive buffer to the ring. */
3026 if (alc_newbuf(sc, rxd) != 0) {
3028 /* Reuse Rx buffers. */
3029 if (sc->alc_cdata.alc_rxhead != NULL)
3030 m_freem(sc->alc_cdata.alc_rxhead);
3035 * Assume we've received a full sized frame.
3036 * Actual size is fixed when we encounter the end of
3037 * multi-segmented frame.
3039 mp->m_len = sc->alc_buf_size;
3041 /* Chain received mbufs. */
3042 if (sc->alc_cdata.alc_rxhead == NULL) {
3043 sc->alc_cdata.alc_rxhead = mp;
3044 sc->alc_cdata.alc_rxtail = mp;
3046 mp->m_flags &= ~M_PKTHDR;
3047 sc->alc_cdata.alc_rxprev_tail =
3048 sc->alc_cdata.alc_rxtail;
3049 sc->alc_cdata.alc_rxtail->m_next = mp;
3050 sc->alc_cdata.alc_rxtail = mp;
3053 if (count == nsegs - 1) {
3054 /* Last desc. for this frame. */
3055 m = sc->alc_cdata.alc_rxhead;
3056 m->m_flags |= M_PKTHDR;
3058 * It seems that L1C/L2C controller has no way
3059 * to tell hardware to strip CRC bytes.
3062 sc->alc_cdata.alc_rxlen - ETHER_CRC_LEN;
3064 /* Set last mbuf size. */
3065 mp->m_len = sc->alc_cdata.alc_rxlen -
3066 (nsegs - 1) * sc->alc_buf_size;
3067 /* Remove the CRC bytes in chained mbufs. */
3068 if (mp->m_len <= ETHER_CRC_LEN) {
3069 sc->alc_cdata.alc_rxtail =
3070 sc->alc_cdata.alc_rxprev_tail;
3071 sc->alc_cdata.alc_rxtail->m_len -=
3072 (ETHER_CRC_LEN - mp->m_len);
3073 sc->alc_cdata.alc_rxtail->m_next = NULL;
3076 mp->m_len -= ETHER_CRC_LEN;
3079 m->m_len = m->m_pkthdr.len;
3080 m->m_pkthdr.rcvif = ifp;
3082 * Due to hardware bugs, Rx checksum offloading
3083 * was intentionally disabled.
3085 if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) != 0 &&
3086 (status & RRD_VLAN_TAG) != 0) {
3087 vtag = RRD_VLAN(le32toh(rrd->vtag));
3088 m->m_pkthdr.ether_vlantag = ntohs(vtag);
3089 m->m_flags |= M_VLANTAG;
3091 #ifndef __NO_STRICT_ALIGNMENT
3092 m = alc_fixup_rx(ifp, m);
3097 (*ifp->if_input)(ifp, m);
3101 /* Reset mbuf chains. */
3102 ALC_RXCHAIN_RESET(sc);
3108 struct alc_softc *sc;
3109 struct mii_data *mii;
3111 sc = (struct alc_softc *)arg;
3115 mii = device_get_softc(sc->alc_miibus);
3117 alc_stats_update(sc);
3119 * alc(4) does not rely on Tx completion interrupts to reclaim
3120 * transferred buffers. Instead Tx completion interrupts are
3121 * used to hint for scheduling Tx task. So it's necessary to
3122 * release transmitted buffers by kicking Tx completion
3123 * handler. This limits the maximum reclamation delay to a hz.
3127 callout_reset(&sc->alc_tick_ch, hz, alc_tick, sc);
3132 alc_reset(struct alc_softc *sc)
3137 reg = CSR_READ_4(sc, ALC_MASTER_CFG) & 0xFFFF;
3138 reg |= MASTER_OOB_DIS_OFF | MASTER_RESET;
3139 CSR_WRITE_4(sc, ALC_MASTER_CFG, reg);
3141 for (i = ALC_RESET_TIMEOUT; i > 0; i--) {
3143 if ((CSR_READ_4(sc, ALC_MASTER_CFG) & MASTER_RESET) == 0)
3147 device_printf(sc->alc_dev, "master reset timeout!\n");
3149 for (i = ALC_RESET_TIMEOUT; i > 0; i--) {
3150 if ((reg = CSR_READ_4(sc, ALC_IDLE_STATUS)) == 0)
3156 device_printf(sc->alc_dev, "reset timeout(0x%08x)!\n", reg);
3162 struct alc_softc *sc;
3164 sc = (struct alc_softc *)xsc;
3166 alc_init_locked(sc);
3171 alc_init_locked(struct alc_softc *sc)
3174 struct mii_data *mii;
3175 uint8_t eaddr[ETHER_ADDR_LEN];
3177 uint32_t reg, rxf_hi, rxf_lo;
3179 ALC_LOCK_ASSERT(sc);
3182 mii = device_get_softc(sc->alc_miibus);
3184 if ((ifp->if_flags & IFF_RUNNING) != 0)
3187 * Cancel any pending I/O.
3191 * Reset the chip to a known state.
3195 /* Initialize Rx descriptors. */
3196 if (alc_init_rx_ring(sc) != 0) {
3197 device_printf(sc->alc_dev, "no memory for Rx buffers.\n");
3201 alc_init_rr_ring(sc);
3202 alc_init_tx_ring(sc);
3206 /* Reprogram the station address. */
3207 bcopy(IF_LLADDR(ifp), eaddr, ETHER_ADDR_LEN);
3208 CSR_WRITE_4(sc, ALC_PAR0,
3209 eaddr[2] << 24 | eaddr[3] << 16 | eaddr[4] << 8 | eaddr[5]);
3210 CSR_WRITE_4(sc, ALC_PAR1, eaddr[0] << 8 | eaddr[1]);
3212 * Clear WOL status and disable all WOL feature as WOL
3213 * would interfere Rx operation under normal environments.
3215 CSR_READ_4(sc, ALC_WOL_CFG);
3216 CSR_WRITE_4(sc, ALC_WOL_CFG, 0);
3217 /* Set Tx descriptor base addresses. */
3218 paddr = sc->alc_rdata.alc_tx_ring_paddr;
3219 CSR_WRITE_4(sc, ALC_TX_BASE_ADDR_HI, ALC_ADDR_HI(paddr));
3220 CSR_WRITE_4(sc, ALC_TDL_HEAD_ADDR_LO, ALC_ADDR_LO(paddr));
3221 /* We don't use high priority ring. */
3222 CSR_WRITE_4(sc, ALC_TDH_HEAD_ADDR_LO, 0);
3223 /* Set Tx descriptor counter. */
3224 CSR_WRITE_4(sc, ALC_TD_RING_CNT,
3225 (ALC_TX_RING_CNT << TD_RING_CNT_SHIFT) & TD_RING_CNT_MASK);
3226 /* Set Rx descriptor base addresses. */
3227 paddr = sc->alc_rdata.alc_rx_ring_paddr;
3228 CSR_WRITE_4(sc, ALC_RX_BASE_ADDR_HI, ALC_ADDR_HI(paddr));
3229 CSR_WRITE_4(sc, ALC_RD0_HEAD_ADDR_LO, ALC_ADDR_LO(paddr));
3230 /* We use one Rx ring. */
3231 CSR_WRITE_4(sc, ALC_RD1_HEAD_ADDR_LO, 0);
3232 CSR_WRITE_4(sc, ALC_RD2_HEAD_ADDR_LO, 0);
3233 CSR_WRITE_4(sc, ALC_RD3_HEAD_ADDR_LO, 0);
3234 /* Set Rx descriptor counter. */
3235 CSR_WRITE_4(sc, ALC_RD_RING_CNT,
3236 (ALC_RX_RING_CNT << RD_RING_CNT_SHIFT) & RD_RING_CNT_MASK);
3239 * Let hardware split jumbo frames into alc_max_buf_sized chunks.
3240 * if it do not fit the buffer size. Rx return descriptor holds
3241 * a counter that indicates how many fragments were made by the
3242 * hardware. The buffer size should be multiple of 8 bytes.
3243 * Since hardware has limit on the size of buffer size, always
3244 * use the maximum value.
3245 * For strict-alignment architectures make sure to reduce buffer
3246 * size by 8 bytes to make room for alignment fixup.
3248 #ifndef __NO_STRICT_ALIGNMENT
3249 sc->alc_buf_size = RX_BUF_SIZE_MAX - sizeof(uint64_t);
3251 sc->alc_buf_size = RX_BUF_SIZE_MAX;
3253 CSR_WRITE_4(sc, ALC_RX_BUF_SIZE, sc->alc_buf_size);
3255 paddr = sc->alc_rdata.alc_rr_ring_paddr;
3256 /* Set Rx return descriptor base addresses. */
3257 CSR_WRITE_4(sc, ALC_RRD0_HEAD_ADDR_LO, ALC_ADDR_LO(paddr));
3258 /* We use one Rx return ring. */
3259 CSR_WRITE_4(sc, ALC_RRD1_HEAD_ADDR_LO, 0);
3260 CSR_WRITE_4(sc, ALC_RRD2_HEAD_ADDR_LO, 0);
3261 CSR_WRITE_4(sc, ALC_RRD3_HEAD_ADDR_LO, 0);
3262 /* Set Rx return descriptor counter. */
3263 CSR_WRITE_4(sc, ALC_RRD_RING_CNT,
3264 (ALC_RR_RING_CNT << RRD_RING_CNT_SHIFT) & RRD_RING_CNT_MASK);
3265 paddr = sc->alc_rdata.alc_cmb_paddr;
3266 CSR_WRITE_4(sc, ALC_CMB_BASE_ADDR_LO, ALC_ADDR_LO(paddr));
3267 paddr = sc->alc_rdata.alc_smb_paddr;
3268 CSR_WRITE_4(sc, ALC_SMB_BASE_ADDR_HI, ALC_ADDR_HI(paddr));
3269 CSR_WRITE_4(sc, ALC_SMB_BASE_ADDR_LO, ALC_ADDR_LO(paddr));
3271 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B) {
3272 /* Reconfigure SRAM - Vendor magic. */
3273 CSR_WRITE_4(sc, ALC_SRAM_RX_FIFO_LEN, 0x000002A0);
3274 CSR_WRITE_4(sc, ALC_SRAM_TX_FIFO_LEN, 0x00000100);
3275 CSR_WRITE_4(sc, ALC_SRAM_RX_FIFO_ADDR, 0x029F0000);
3276 CSR_WRITE_4(sc, ALC_SRAM_RD0_ADDR, 0x02BF02A0);
3277 CSR_WRITE_4(sc, ALC_SRAM_TX_FIFO_ADDR, 0x03BF02C0);
3278 CSR_WRITE_4(sc, ALC_SRAM_TD_ADDR, 0x03DF03C0);
3279 CSR_WRITE_4(sc, ALC_TXF_WATER_MARK, 0x00000000);
3280 CSR_WRITE_4(sc, ALC_RD_DMA_CFG, 0x00000000);
3283 /* Tell hardware that we're ready to load DMA blocks. */
3284 CSR_WRITE_4(sc, ALC_DMA_BLOCK, DMA_BLOCK_LOAD);
3286 /* Configure interrupt moderation timer. */
3287 reg = ALC_USECS(sc->alc_int_rx_mod) << IM_TIMER_RX_SHIFT;
3288 reg |= ALC_USECS(sc->alc_int_tx_mod) << IM_TIMER_TX_SHIFT;
3289 CSR_WRITE_4(sc, ALC_IM_TIMER, reg);
3291 * We don't want to automatic interrupt clear as task queue
3292 * for the interrupt should know interrupt status.
3294 reg = MASTER_SA_TIMER_ENB;
3295 if (ALC_USECS(sc->alc_int_rx_mod) != 0)
3296 reg |= MASTER_IM_RX_TIMER_ENB;
3297 if (ALC_USECS(sc->alc_int_tx_mod) != 0)
3298 reg |= MASTER_IM_TX_TIMER_ENB;
3299 CSR_WRITE_4(sc, ALC_MASTER_CFG, reg);
3301 * Disable interrupt re-trigger timer. We don't want automatic
3302 * re-triggering of un-ACKed interrupts.
3304 CSR_WRITE_4(sc, ALC_INTR_RETRIG_TIMER, ALC_USECS(0));
3305 /* Configure CMB. */
3306 if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0) {
3307 CSR_WRITE_4(sc, ALC_CMB_TD_THRESH, 4);
3308 CSR_WRITE_4(sc, ALC_CMB_TX_TIMER, ALC_USECS(5000));
3310 CSR_WRITE_4(sc, ALC_CMB_TX_TIMER, ALC_USECS(0));
3313 * Hardware can be configured to issue SMB interrupt based
3314 * on programmed interval. Since there is a callout that is
3315 * invoked for every hz in driver we use that instead of
3316 * relying on periodic SMB interrupt.
3318 CSR_WRITE_4(sc, ALC_SMB_STAT_TIMER, ALC_USECS(0));
3319 /* Clear MAC statistics. */
3320 alc_stats_clear(sc);
3323 * Always use maximum frame size that controller can support.
3324 * Otherwise received frames that has larger frame length
3325 * than alc(4) MTU would be silently dropped in hardware. This
3326 * would make path-MTU discovery hard as sender wouldn't get
3327 * any responses from receiver. alc(4) supports
3328 * multi-fragmented frames on Rx path so it has no issue on
3329 * assembling fragmented frames. Using maximum frame size also
3330 * removes the need to reinitialize hardware when interface
3331 * MTU configuration was changed.
3333 * Be conservative in what you do, be liberal in what you
3334 * accept from others - RFC 793.
3336 CSR_WRITE_4(sc, ALC_FRAME_SIZE, sc->alc_ident->max_framelen);
3338 /* Disable header split(?) */
3339 CSR_WRITE_4(sc, ALC_HDS_CFG, 0);
3341 /* Configure IPG/IFG parameters. */
3342 CSR_WRITE_4(sc, ALC_IPG_IFG_CFG,
3343 ((IPG_IFG_IPGT_DEFAULT << IPG_IFG_IPGT_SHIFT) & IPG_IFG_IPGT_MASK) |
3344 ((IPG_IFG_MIFG_DEFAULT << IPG_IFG_MIFG_SHIFT) & IPG_IFG_MIFG_MASK) |
3345 ((IPG_IFG_IPG1_DEFAULT << IPG_IFG_IPG1_SHIFT) & IPG_IFG_IPG1_MASK) |
3346 ((IPG_IFG_IPG2_DEFAULT << IPG_IFG_IPG2_SHIFT) & IPG_IFG_IPG2_MASK));
3347 /* Set parameters for half-duplex media. */
3348 CSR_WRITE_4(sc, ALC_HDPX_CFG,
3349 ((HDPX_CFG_LCOL_DEFAULT << HDPX_CFG_LCOL_SHIFT) &
3350 HDPX_CFG_LCOL_MASK) |
3351 ((HDPX_CFG_RETRY_DEFAULT << HDPX_CFG_RETRY_SHIFT) &
3352 HDPX_CFG_RETRY_MASK) | HDPX_CFG_EXC_DEF_EN |
3353 ((HDPX_CFG_ABEBT_DEFAULT << HDPX_CFG_ABEBT_SHIFT) &
3354 HDPX_CFG_ABEBT_MASK) |
3355 ((HDPX_CFG_JAMIPG_DEFAULT << HDPX_CFG_JAMIPG_SHIFT) &
3356 HDPX_CFG_JAMIPG_MASK));
3358 * Set TSO/checksum offload threshold. For frames that is
3359 * larger than this threshold, hardware wouldn't do
3360 * TSO/checksum offloading.
3362 CSR_WRITE_4(sc, ALC_TSO_OFFLOAD_THRESH,
3363 (sc->alc_ident->max_framelen >> TSO_OFFLOAD_THRESH_UNIT_SHIFT) &
3364 TSO_OFFLOAD_THRESH_MASK);
3365 /* Configure TxQ. */
3366 reg = (alc_dma_burst[sc->alc_dma_rd_burst] <<
3367 TXQ_CFG_TX_FIFO_BURST_SHIFT) & TXQ_CFG_TX_FIFO_BURST_MASK;
3368 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B ||
3369 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2) {
3372 reg |= (TXQ_CFG_TD_BURST_DEFAULT << TXQ_CFG_TD_BURST_SHIFT) &
3373 TXQ_CFG_TD_BURST_MASK;
3374 CSR_WRITE_4(sc, ALC_TXQ_CFG, reg | TXQ_CFG_ENHANCED_MODE);
3376 /* Configure Rx free descriptor pre-fetching. */
3377 CSR_WRITE_4(sc, ALC_RX_RD_FREE_THRESH,
3378 ((RX_RD_FREE_THRESH_HI_DEFAULT << RX_RD_FREE_THRESH_HI_SHIFT) &
3379 RX_RD_FREE_THRESH_HI_MASK) |
3380 ((RX_RD_FREE_THRESH_LO_DEFAULT << RX_RD_FREE_THRESH_LO_SHIFT) &
3381 RX_RD_FREE_THRESH_LO_MASK));
3384 * Configure flow control parameters.
3385 * XON : 80% of Rx FIFO
3386 * XOFF : 30% of Rx FIFO
3388 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8131 ||
3389 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8132) {
3390 reg = CSR_READ_4(sc, ALC_SRAM_RX_FIFO_LEN);
3391 rxf_hi = (reg * 8) / 10;
3392 rxf_lo = (reg * 3) / 10;
3393 CSR_WRITE_4(sc, ALC_RX_FIFO_PAUSE_THRESH,
3394 ((rxf_lo << RX_FIFO_PAUSE_THRESH_LO_SHIFT) &
3395 RX_FIFO_PAUSE_THRESH_LO_MASK) |
3396 ((rxf_hi << RX_FIFO_PAUSE_THRESH_HI_SHIFT) &
3397 RX_FIFO_PAUSE_THRESH_HI_MASK));
3400 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B ||
3401 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2) {
3402 CSR_WRITE_4(sc, ALC_SERDES_LOCK,
3403 CSR_READ_4(sc, ALC_SERDES_LOCK) | SERDES_MAC_CLK_SLOWDOWN |
3404 SERDES_PHY_CLK_SLOWDOWN);
3407 /* Disable RSS until I understand L1C/L2C's RSS logic. */
3408 CSR_WRITE_4(sc, ALC_RSS_IDT_TABLE0, 0);
3409 CSR_WRITE_4(sc, ALC_RSS_CPU, 0);
3411 /* Configure RxQ. */
3412 reg = (RXQ_CFG_RD_BURST_DEFAULT << RXQ_CFG_RD_BURST_SHIFT) &
3413 RXQ_CFG_RD_BURST_MASK;
3414 reg |= RXQ_CFG_RSS_MODE_DIS;
3415 if ((sc->alc_flags & ALC_FLAG_ASPM_MON) != 0)
3416 reg |= RXQ_CFG_ASPM_THROUGHPUT_LIMIT_1M;
3417 CSR_WRITE_4(sc, ALC_RXQ_CFG, reg);
3419 /* Configure DMA parameters. */
3420 reg = DMA_CFG_OUT_ORDER | DMA_CFG_RD_REQ_PRI;
3422 if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0)
3423 reg |= DMA_CFG_CMB_ENB;
3424 if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0)
3425 reg |= DMA_CFG_SMB_ENB;
3427 reg |= DMA_CFG_SMB_DIS;
3428 reg |= (sc->alc_dma_rd_burst & DMA_CFG_RD_BURST_MASK) <<
3429 DMA_CFG_RD_BURST_SHIFT;
3430 reg |= (sc->alc_dma_wr_burst & DMA_CFG_WR_BURST_MASK) <<
3431 DMA_CFG_WR_BURST_SHIFT;
3432 reg |= (DMA_CFG_RD_DELAY_CNT_DEFAULT << DMA_CFG_RD_DELAY_CNT_SHIFT) &
3433 DMA_CFG_RD_DELAY_CNT_MASK;
3434 reg |= (DMA_CFG_WR_DELAY_CNT_DEFAULT << DMA_CFG_WR_DELAY_CNT_SHIFT) &
3435 DMA_CFG_WR_DELAY_CNT_MASK;
3436 CSR_WRITE_4(sc, ALC_DMA_CFG, reg);
3439 * Configure Tx/Rx MACs.
3440 * - Auto-padding for short frames.
3441 * - Enable CRC generation.
3442 * Actual reconfiguration of MAC for resolved speed/duplex
3443 * is followed after detection of link establishment.
3444 * AR813x/AR815x always does checksum computation regardless
3445 * of MAC_CFG_RXCSUM_ENB bit. Also the controller is known to
3446 * have bug in protocol field in Rx return structure so
3447 * these controllers can't handle fragmented frames. Disable
3448 * Rx checksum offloading until there is a newer controller
3449 * that has sane implementation.
3451 reg = MAC_CFG_TX_CRC_ENB | MAC_CFG_TX_AUTO_PAD | MAC_CFG_FULL_DUPLEX |
3452 ((MAC_CFG_PREAMBLE_DEFAULT << MAC_CFG_PREAMBLE_SHIFT) &
3453 MAC_CFG_PREAMBLE_MASK);
3454 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151 ||
3455 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2 ||
3456 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2) {
3457 reg |= MAC_CFG_HASH_ALG_CRC32 | MAC_CFG_SPEED_MODE_SW;
3459 if ((sc->alc_flags & ALC_FLAG_FASTETHER) != 0)
3460 reg |= MAC_CFG_SPEED_10_100;
3462 reg |= MAC_CFG_SPEED_1000;
3463 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
3465 /* Set up the receive filter. */
3469 /* Acknowledge all pending interrupts and clear it. */
3470 CSR_WRITE_4(sc, ALC_INTR_MASK, ALC_INTRS);
3471 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0xFFFFFFFF);
3472 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0);
3474 sc->alc_flags &= ~ALC_FLAG_LINK;
3475 /* Switch to the current media. */
3478 callout_reset(&sc->alc_tick_ch, hz, alc_tick, sc);
3480 ifp->if_flags |= IFF_RUNNING;
3481 ifp->if_flags &= ~IFF_OACTIVE;
3485 alc_stop(struct alc_softc *sc)
3488 struct alc_txdesc *txd;
3489 struct alc_rxdesc *rxd;
3493 ALC_LOCK_ASSERT(sc);
3495 * Mark the interface down and cancel the watchdog timer.
3498 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
3499 sc->alc_flags &= ~ALC_FLAG_LINK;
3500 callout_stop(&sc->alc_tick_ch);
3501 sc->alc_watchdog_timer = 0;
3502 alc_stats_update(sc);
3503 /* Disable interrupts. */
3504 CSR_WRITE_4(sc, ALC_INTR_MASK, 0);
3505 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0xFFFFFFFF);
3508 reg = CSR_READ_4(sc, ALC_DMA_CFG);
3509 reg &= ~(DMA_CFG_CMB_ENB | DMA_CFG_SMB_ENB);
3510 reg |= DMA_CFG_SMB_DIS;
3511 CSR_WRITE_4(sc, ALC_DMA_CFG, reg);
3513 /* Stop Rx/Tx MACs. */
3515 /* Disable interrupts which might be touched in taskq handler. */
3516 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0xFFFFFFFF);
3518 /* Reclaim Rx buffers that have been processed. */
3519 if (sc->alc_cdata.alc_rxhead != NULL)
3520 m_freem(sc->alc_cdata.alc_rxhead);
3521 ALC_RXCHAIN_RESET(sc);
3523 * Free Tx/Rx mbufs still in the queues.
3525 for (i = 0; i < ALC_RX_RING_CNT; i++) {
3526 rxd = &sc->alc_cdata.alc_rxdesc[i];
3527 if (rxd->rx_m != NULL) {
3528 bus_dmamap_sync(sc->alc_cdata.alc_rx_tag,
3529 rxd->rx_dmamap, BUS_DMASYNC_POSTREAD);
3530 bus_dmamap_unload(sc->alc_cdata.alc_rx_tag,
3536 for (i = 0; i < ALC_TX_RING_CNT; i++) {
3537 txd = &sc->alc_cdata.alc_txdesc[i];
3538 if (txd->tx_m != NULL) {
3539 bus_dmamap_sync(sc->alc_cdata.alc_tx_tag,
3540 txd->tx_dmamap, BUS_DMASYNC_POSTWRITE);
3541 bus_dmamap_unload(sc->alc_cdata.alc_tx_tag,
3550 alc_stop_mac(struct alc_softc *sc)
3555 ALC_LOCK_ASSERT(sc);
3557 /* Disable Rx/Tx MAC. */
3558 reg = CSR_READ_4(sc, ALC_MAC_CFG);
3559 if ((reg & (MAC_CFG_TX_ENB | MAC_CFG_RX_ENB)) != 0) {
3560 reg &= ~MAC_CFG_TX_ENB | MAC_CFG_RX_ENB;
3561 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
3563 for (i = ALC_TIMEOUT; i > 0; i--) {
3564 reg = CSR_READ_4(sc, ALC_IDLE_STATUS);
3570 device_printf(sc->alc_dev,
3571 "could not disable Rx/Tx MAC(0x%08x)!\n", reg);
3575 alc_start_queue(struct alc_softc *sc)
3580 RXQ_CFG_QUEUE0_ENB | RXQ_CFG_QUEUE1_ENB,
3581 RXQ_CFG_QUEUE0_ENB | RXQ_CFG_QUEUE1_ENB | RXQ_CFG_QUEUE2_ENB,
3586 ALC_LOCK_ASSERT(sc);
3589 cfg = CSR_READ_4(sc, ALC_RXQ_CFG);
3590 cfg &= ~RXQ_CFG_ENB;
3592 CSR_WRITE_4(sc, ALC_RXQ_CFG, cfg);
3594 cfg = CSR_READ_4(sc, ALC_TXQ_CFG);
3596 CSR_WRITE_4(sc, ALC_TXQ_CFG, cfg);
3600 alc_stop_queue(struct alc_softc *sc)
3605 ALC_LOCK_ASSERT(sc);
3608 reg = CSR_READ_4(sc, ALC_RXQ_CFG);
3609 if ((reg & RXQ_CFG_ENB) != 0) {
3610 reg &= ~RXQ_CFG_ENB;
3611 CSR_WRITE_4(sc, ALC_RXQ_CFG, reg);
3614 reg = CSR_READ_4(sc, ALC_TXQ_CFG);
3615 if ((reg & TXQ_CFG_ENB) == 0) {
3616 reg &= ~TXQ_CFG_ENB;
3617 CSR_WRITE_4(sc, ALC_TXQ_CFG, reg);
3619 for (i = ALC_TIMEOUT; i > 0; i--) {
3620 reg = CSR_READ_4(sc, ALC_IDLE_STATUS);
3621 if ((reg & (IDLE_STATUS_RXQ | IDLE_STATUS_TXQ)) == 0)
3626 device_printf(sc->alc_dev,
3627 "could not disable RxQ/TxQ (0x%08x)!\n", reg);
3631 alc_init_tx_ring(struct alc_softc *sc)
3633 struct alc_ring_data *rd;
3634 struct alc_txdesc *txd;
3637 ALC_LOCK_ASSERT(sc);
3639 sc->alc_cdata.alc_tx_prod = 0;
3640 sc->alc_cdata.alc_tx_cons = 0;
3641 sc->alc_cdata.alc_tx_cnt = 0;
3643 rd = &sc->alc_rdata;
3644 bzero(rd->alc_tx_ring, ALC_TX_RING_SZ);
3645 for (i = 0; i < ALC_TX_RING_CNT; i++) {
3646 txd = &sc->alc_cdata.alc_txdesc[i];
3650 bus_dmamap_sync(sc->alc_cdata.alc_tx_ring_tag,
3651 sc->alc_cdata.alc_tx_ring_map, BUS_DMASYNC_PREWRITE);
3655 alc_init_rx_ring(struct alc_softc *sc)
3657 struct alc_ring_data *rd;
3658 struct alc_rxdesc *rxd;
3661 ALC_LOCK_ASSERT(sc);
3663 sc->alc_cdata.alc_rx_cons = ALC_RX_RING_CNT - 1;
3664 sc->alc_morework = 0;
3665 rd = &sc->alc_rdata;
3666 bzero(rd->alc_rx_ring, ALC_RX_RING_SZ);
3667 for (i = 0; i < ALC_RX_RING_CNT; i++) {
3668 rxd = &sc->alc_cdata.alc_rxdesc[i];
3670 rxd->rx_desc = &rd->alc_rx_ring[i];
3671 if (alc_newbuf(sc, rxd) != 0)
3676 * Since controller does not update Rx descriptors, driver
3677 * does have to read Rx descriptors back so BUS_DMASYNC_PREWRITE
3678 * is enough to ensure coherence.
3680 bus_dmamap_sync(sc->alc_cdata.alc_rx_ring_tag,
3681 sc->alc_cdata.alc_rx_ring_map, BUS_DMASYNC_PREWRITE);
3682 /* Let controller know availability of new Rx buffers. */
3683 CSR_WRITE_4(sc, ALC_MBOX_RD0_PROD_IDX, sc->alc_cdata.alc_rx_cons);
3689 alc_init_rr_ring(struct alc_softc *sc)
3691 struct alc_ring_data *rd;
3693 ALC_LOCK_ASSERT(sc);
3695 sc->alc_cdata.alc_rr_cons = 0;
3696 ALC_RXCHAIN_RESET(sc);
3698 rd = &sc->alc_rdata;
3699 bzero(rd->alc_rr_ring, ALC_RR_RING_SZ);
3700 bus_dmamap_sync(sc->alc_cdata.alc_rr_ring_tag,
3701 sc->alc_cdata.alc_rr_ring_map,
3702 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
3706 alc_init_cmb(struct alc_softc *sc)
3708 struct alc_ring_data *rd;
3710 ALC_LOCK_ASSERT(sc);
3712 rd = &sc->alc_rdata;
3713 bzero(rd->alc_cmb, ALC_CMB_SZ);
3714 bus_dmamap_sync(sc->alc_cdata.alc_cmb_tag, sc->alc_cdata.alc_cmb_map,
3715 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
3719 alc_init_smb(struct alc_softc *sc)
3721 struct alc_ring_data *rd;
3723 ALC_LOCK_ASSERT(sc);
3725 rd = &sc->alc_rdata;
3726 bzero(rd->alc_smb, ALC_SMB_SZ);
3727 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag, sc->alc_cdata.alc_smb_map,
3728 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
3732 alc_rxvlan(struct alc_softc *sc)
3737 ALC_LOCK_ASSERT(sc);
3740 reg = CSR_READ_4(sc, ALC_MAC_CFG);
3741 if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) != 0)
3742 reg |= MAC_CFG_VLAN_TAG_STRIP;
3744 reg &= ~MAC_CFG_VLAN_TAG_STRIP;
3745 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
3749 alc_rxfilter(struct alc_softc *sc)
3752 struct ifmultiaddr *ifma;
3757 ALC_LOCK_ASSERT(sc);
3761 bzero(mchash, sizeof(mchash));
3762 rxcfg = CSR_READ_4(sc, ALC_MAC_CFG);
3763 rxcfg &= ~(MAC_CFG_ALLMULTI | MAC_CFG_BCAST | MAC_CFG_PROMISC);
3764 if ((ifp->if_flags & IFF_BROADCAST) != 0)
3765 rxcfg |= MAC_CFG_BCAST;
3766 if ((ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI)) != 0) {
3767 if ((ifp->if_flags & IFF_PROMISC) != 0)
3768 rxcfg |= MAC_CFG_PROMISC;
3769 if ((ifp->if_flags & IFF_ALLMULTI) != 0)
3770 rxcfg |= MAC_CFG_ALLMULTI;
3771 mchash[0] = 0xFFFFFFFF;
3772 mchash[1] = 0xFFFFFFFF;
3778 if_maddr_rlock(ifp);
3780 TAILQ_FOREACH(ifma, &sc->alc_ifp->if_multiaddrs, ifma_link) {
3781 if (ifma->ifma_addr->sa_family != AF_LINK)
3783 crc = ether_crc32_be(LLADDR((struct sockaddr_dl *)
3784 ifma->ifma_addr), ETHER_ADDR_LEN);
3785 mchash[crc >> 31] |= 1 << ((crc >> 26) & 0x1f);
3789 if_maddr_runlock(ifp);
3793 CSR_WRITE_4(sc, ALC_MAR0, mchash[0]);
3794 CSR_WRITE_4(sc, ALC_MAR1, mchash[1]);
3795 CSR_WRITE_4(sc, ALC_MAC_CFG, rxcfg);
3799 sysctl_hw_alc_proc_limit(SYSCTL_HANDLER_ARGS)
3801 return (sysctl_int_range(oidp, arg1, arg2, req,
3802 ALC_PROC_MIN, ALC_PROC_MAX));
3806 sysctl_hw_alc_int_mod(SYSCTL_HANDLER_ARGS)
3809 return (sysctl_int_range(oidp, arg1, arg2, req,
3810 ALC_IM_TIMER_MIN, ALC_IM_TIMER_MAX));