2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2009, Pyun YongHyeon <yongari@FreeBSD.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice unmodified, this list of conditions, and the following
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 /* Driver for Atheros AR813x/AR815x PCIe Ethernet. */
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
35 #include <sys/param.h>
36 #include <sys/systm.h>
38 #include <sys/endian.h>
39 #include <sys/kernel.h>
41 #include <sys/malloc.h>
43 #include <sys/module.h>
44 #include <sys/mutex.h>
46 #include <sys/queue.h>
47 #include <sys/socket.h>
48 #include <sys/sockio.h>
49 #include <sys/sysctl.h>
50 #include <sys/taskqueue.h>
54 #include <net/if_var.h>
55 #include <net/if_arp.h>
56 #include <net/ethernet.h>
57 #include <net/if_dl.h>
58 #include <net/if_llc.h>
59 #include <net/if_media.h>
60 #include <net/if_types.h>
61 #include <net/if_vlan_var.h>
63 #include <netinet/in.h>
64 #include <netinet/in_systm.h>
65 #include <netinet/ip.h>
66 #include <netinet/tcp.h>
68 #include <dev/mii/mii.h>
69 #include <dev/mii/miivar.h>
71 #include <dev/pci/pcireg.h>
72 #include <dev/pci/pcivar.h>
74 #include <machine/bus.h>
75 #include <machine/in_cksum.h>
77 #include <dev/alc/if_alcreg.h>
78 #include <dev/alc/if_alcvar.h>
80 /* "device miibus" required. See GENERIC if you get errors here. */
81 #include "miibus_if.h"
82 #undef ALC_USE_CUSTOM_CSUM
84 #ifdef ALC_USE_CUSTOM_CSUM
85 #define ALC_CSUM_FEATURES (CSUM_TCP | CSUM_UDP)
87 #define ALC_CSUM_FEATURES (CSUM_IP | CSUM_TCP | CSUM_UDP)
90 MODULE_DEPEND(alc, pci, 1, 1, 1);
91 MODULE_DEPEND(alc, ether, 1, 1, 1);
92 MODULE_DEPEND(alc, miibus, 1, 1, 1);
95 static int msi_disable = 0;
96 static int msix_disable = 0;
97 TUNABLE_INT("hw.alc.msi_disable", &msi_disable);
98 TUNABLE_INT("hw.alc.msix_disable", &msix_disable);
101 * Devices supported by this driver.
103 static struct alc_ident alc_ident_table[] = {
104 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8131, 9 * 1024,
105 "Atheros AR8131 PCIe Gigabit Ethernet" },
106 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8132, 9 * 1024,
107 "Atheros AR8132 PCIe Fast Ethernet" },
108 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8151, 6 * 1024,
109 "Atheros AR8151 v1.0 PCIe Gigabit Ethernet" },
110 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8151_V2, 6 * 1024,
111 "Atheros AR8151 v2.0 PCIe Gigabit Ethernet" },
112 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8152_B, 6 * 1024,
113 "Atheros AR8152 v1.1 PCIe Fast Ethernet" },
114 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8152_B2, 6 * 1024,
115 "Atheros AR8152 v2.0 PCIe Fast Ethernet" },
116 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8161, 9 * 1024,
117 "Atheros AR8161 PCIe Gigabit Ethernet" },
118 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8162, 9 * 1024,
119 "Atheros AR8162 PCIe Fast Ethernet" },
120 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8171, 9 * 1024,
121 "Atheros AR8171 PCIe Gigabit Ethernet" },
122 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8172, 9 * 1024,
123 "Atheros AR8172 PCIe Fast Ethernet" },
124 { VENDORID_ATHEROS, DEVICEID_ATHEROS_E2200, 9 * 1024,
125 "Killer E2200 Gigabit Ethernet" },
126 { VENDORID_ATHEROS, DEVICEID_ATHEROS_E2400, 9 * 1024,
127 "Killer E2400 Gigabit Ethernet" },
128 { VENDORID_ATHEROS, DEVICEID_ATHEROS_E2500, 9 * 1024,
129 "Killer E2500 Gigabit Ethernet" },
133 static void alc_aspm(struct alc_softc *, int, int);
134 static void alc_aspm_813x(struct alc_softc *, int);
135 static void alc_aspm_816x(struct alc_softc *, int);
136 static int alc_attach(device_t);
137 static int alc_check_boundary(struct alc_softc *);
138 static void alc_config_msi(struct alc_softc *);
139 static int alc_detach(device_t);
140 static void alc_disable_l0s_l1(struct alc_softc *);
141 static int alc_dma_alloc(struct alc_softc *);
142 static void alc_dma_free(struct alc_softc *);
143 static void alc_dmamap_cb(void *, bus_dma_segment_t *, int, int);
144 static void alc_dsp_fixup(struct alc_softc *, int);
145 static int alc_encap(struct alc_softc *, struct mbuf **);
146 static struct alc_ident *
147 alc_find_ident(device_t);
148 #ifndef __NO_STRICT_ALIGNMENT
150 alc_fixup_rx(struct ifnet *, struct mbuf *);
152 static void alc_get_macaddr(struct alc_softc *);
153 static void alc_get_macaddr_813x(struct alc_softc *);
154 static void alc_get_macaddr_816x(struct alc_softc *);
155 static void alc_get_macaddr_par(struct alc_softc *);
156 static void alc_init(void *);
157 static void alc_init_cmb(struct alc_softc *);
158 static void alc_init_locked(struct alc_softc *);
159 static void alc_init_rr_ring(struct alc_softc *);
160 static int alc_init_rx_ring(struct alc_softc *);
161 static void alc_init_smb(struct alc_softc *);
162 static void alc_init_tx_ring(struct alc_softc *);
163 static void alc_int_task(void *, int);
164 static int alc_intr(void *);
165 static int alc_ioctl(struct ifnet *, u_long, caddr_t);
166 static void alc_mac_config(struct alc_softc *);
167 static uint32_t alc_mii_readreg_813x(struct alc_softc *, int, int);
168 static uint32_t alc_mii_readreg_816x(struct alc_softc *, int, int);
169 static uint32_t alc_mii_writereg_813x(struct alc_softc *, int, int, int);
170 static uint32_t alc_mii_writereg_816x(struct alc_softc *, int, int, int);
171 static int alc_miibus_readreg(device_t, int, int);
172 static void alc_miibus_statchg(device_t);
173 static int alc_miibus_writereg(device_t, int, int, int);
174 static uint32_t alc_miidbg_readreg(struct alc_softc *, int);
175 static uint32_t alc_miidbg_writereg(struct alc_softc *, int, int);
176 static uint32_t alc_miiext_readreg(struct alc_softc *, int, int);
177 static uint32_t alc_miiext_writereg(struct alc_softc *, int, int, int);
178 static int alc_mediachange(struct ifnet *);
179 static int alc_mediachange_locked(struct alc_softc *);
180 static void alc_mediastatus(struct ifnet *, struct ifmediareq *);
181 static int alc_newbuf(struct alc_softc *, struct alc_rxdesc *);
182 static void alc_osc_reset(struct alc_softc *);
183 static void alc_phy_down(struct alc_softc *);
184 static void alc_phy_reset(struct alc_softc *);
185 static void alc_phy_reset_813x(struct alc_softc *);
186 static void alc_phy_reset_816x(struct alc_softc *);
187 static int alc_probe(device_t);
188 static void alc_reset(struct alc_softc *);
189 static int alc_resume(device_t);
190 static void alc_rxeof(struct alc_softc *, struct rx_rdesc *);
191 static int alc_rxintr(struct alc_softc *, int);
192 static void alc_rxfilter(struct alc_softc *);
193 static void alc_rxvlan(struct alc_softc *);
194 static void alc_setlinkspeed(struct alc_softc *);
195 static void alc_setwol(struct alc_softc *);
196 static void alc_setwol_813x(struct alc_softc *);
197 static void alc_setwol_816x(struct alc_softc *);
198 static int alc_shutdown(device_t);
199 static void alc_start(struct ifnet *);
200 static void alc_start_locked(struct ifnet *);
201 static void alc_start_queue(struct alc_softc *);
202 static void alc_stats_clear(struct alc_softc *);
203 static void alc_stats_update(struct alc_softc *);
204 static void alc_stop(struct alc_softc *);
205 static void alc_stop_mac(struct alc_softc *);
206 static void alc_stop_queue(struct alc_softc *);
207 static int alc_suspend(device_t);
208 static void alc_sysctl_node(struct alc_softc *);
209 static void alc_tick(void *);
210 static void alc_txeof(struct alc_softc *);
211 static void alc_watchdog(struct alc_softc *);
212 static int sysctl_int_range(SYSCTL_HANDLER_ARGS, int, int);
213 static int sysctl_hw_alc_proc_limit(SYSCTL_HANDLER_ARGS);
214 static int sysctl_hw_alc_int_mod(SYSCTL_HANDLER_ARGS);
216 static device_method_t alc_methods[] = {
217 /* Device interface. */
218 DEVMETHOD(device_probe, alc_probe),
219 DEVMETHOD(device_attach, alc_attach),
220 DEVMETHOD(device_detach, alc_detach),
221 DEVMETHOD(device_shutdown, alc_shutdown),
222 DEVMETHOD(device_suspend, alc_suspend),
223 DEVMETHOD(device_resume, alc_resume),
226 DEVMETHOD(miibus_readreg, alc_miibus_readreg),
227 DEVMETHOD(miibus_writereg, alc_miibus_writereg),
228 DEVMETHOD(miibus_statchg, alc_miibus_statchg),
233 static driver_t alc_driver = {
236 sizeof(struct alc_softc)
239 static devclass_t alc_devclass;
241 DRIVER_MODULE(alc, pci, alc_driver, alc_devclass, 0, 0);
242 DRIVER_MODULE(miibus, alc, miibus_driver, miibus_devclass, 0, 0);
244 static struct resource_spec alc_res_spec_mem[] = {
245 { SYS_RES_MEMORY, PCIR_BAR(0), RF_ACTIVE },
249 static struct resource_spec alc_irq_spec_legacy[] = {
250 { SYS_RES_IRQ, 0, RF_ACTIVE | RF_SHAREABLE },
254 static struct resource_spec alc_irq_spec_msi[] = {
255 { SYS_RES_IRQ, 1, RF_ACTIVE },
259 static struct resource_spec alc_irq_spec_msix[] = {
260 { SYS_RES_IRQ, 1, RF_ACTIVE },
264 static uint32_t alc_dma_burst[] = { 128, 256, 512, 1024, 2048, 4096, 0, 0 };
267 alc_miibus_readreg(device_t dev, int phy, int reg)
269 struct alc_softc *sc;
272 sc = device_get_softc(dev);
273 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
274 v = alc_mii_readreg_816x(sc, phy, reg);
276 v = alc_mii_readreg_813x(sc, phy, reg);
281 alc_mii_readreg_813x(struct alc_softc *sc, int phy, int reg)
287 * For AR8132 fast ethernet controller, do not report 1000baseT
288 * capability to mii(4). Even though AR8132 uses the same
289 * model/revision number of F1 gigabit PHY, the PHY has no
290 * ability to establish 1000baseT link.
292 if ((sc->alc_flags & ALC_FLAG_FASTETHER) != 0 &&
296 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_READ |
297 MDIO_SUP_PREAMBLE | MDIO_CLK_25_4 | MDIO_REG_ADDR(reg));
298 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
300 v = CSR_READ_4(sc, ALC_MDIO);
301 if ((v & (MDIO_OP_EXECUTE | MDIO_OP_BUSY)) == 0)
306 device_printf(sc->alc_dev, "phy read timeout : %d\n", reg);
310 return ((v & MDIO_DATA_MASK) >> MDIO_DATA_SHIFT);
314 alc_mii_readreg_816x(struct alc_softc *sc, int phy, int reg)
319 if ((sc->alc_flags & ALC_FLAG_LINK) != 0)
320 clk = MDIO_CLK_25_128;
323 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_READ |
324 MDIO_SUP_PREAMBLE | clk | MDIO_REG_ADDR(reg));
325 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
327 v = CSR_READ_4(sc, ALC_MDIO);
328 if ((v & MDIO_OP_BUSY) == 0)
333 device_printf(sc->alc_dev, "phy read timeout : %d\n", reg);
337 return ((v & MDIO_DATA_MASK) >> MDIO_DATA_SHIFT);
341 alc_miibus_writereg(device_t dev, int phy, int reg, int val)
343 struct alc_softc *sc;
346 sc = device_get_softc(dev);
347 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
348 v = alc_mii_writereg_816x(sc, phy, reg, val);
350 v = alc_mii_writereg_813x(sc, phy, reg, val);
355 alc_mii_writereg_813x(struct alc_softc *sc, int phy, int reg, int val)
360 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_WRITE |
361 (val & MDIO_DATA_MASK) << MDIO_DATA_SHIFT |
362 MDIO_SUP_PREAMBLE | MDIO_CLK_25_4 | MDIO_REG_ADDR(reg));
363 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
365 v = CSR_READ_4(sc, ALC_MDIO);
366 if ((v & (MDIO_OP_EXECUTE | MDIO_OP_BUSY)) == 0)
371 device_printf(sc->alc_dev, "phy write timeout : %d\n", reg);
377 alc_mii_writereg_816x(struct alc_softc *sc, int phy, int reg, int val)
382 if ((sc->alc_flags & ALC_FLAG_LINK) != 0)
383 clk = MDIO_CLK_25_128;
386 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_WRITE |
387 ((val & MDIO_DATA_MASK) << MDIO_DATA_SHIFT) | MDIO_REG_ADDR(reg) |
388 MDIO_SUP_PREAMBLE | clk);
389 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
391 v = CSR_READ_4(sc, ALC_MDIO);
392 if ((v & MDIO_OP_BUSY) == 0)
397 device_printf(sc->alc_dev, "phy write timeout : %d\n", reg);
403 alc_miibus_statchg(device_t dev)
405 struct alc_softc *sc;
406 struct mii_data *mii;
410 sc = device_get_softc(dev);
412 mii = device_get_softc(sc->alc_miibus);
414 if (mii == NULL || ifp == NULL ||
415 (ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
418 sc->alc_flags &= ~ALC_FLAG_LINK;
419 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) ==
420 (IFM_ACTIVE | IFM_AVALID)) {
421 switch (IFM_SUBTYPE(mii->mii_media_active)) {
424 sc->alc_flags |= ALC_FLAG_LINK;
427 if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0)
428 sc->alc_flags |= ALC_FLAG_LINK;
434 /* Stop Rx/Tx MACs. */
437 /* Program MACs with resolved speed/duplex/flow-control. */
438 if ((sc->alc_flags & ALC_FLAG_LINK) != 0) {
441 /* Re-enable Tx/Rx MACs. */
442 reg = CSR_READ_4(sc, ALC_MAC_CFG);
443 reg |= MAC_CFG_TX_ENB | MAC_CFG_RX_ENB;
444 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
446 alc_aspm(sc, 0, IFM_SUBTYPE(mii->mii_media_active));
447 alc_dsp_fixup(sc, IFM_SUBTYPE(mii->mii_media_active));
451 alc_miidbg_readreg(struct alc_softc *sc, int reg)
454 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_ADDR,
456 return (alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
461 alc_miidbg_writereg(struct alc_softc *sc, int reg, int val)
464 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_ADDR,
466 return (alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
467 ALC_MII_DBG_DATA, val));
471 alc_miiext_readreg(struct alc_softc *sc, int devaddr, int reg)
476 CSR_WRITE_4(sc, ALC_EXT_MDIO, EXT_MDIO_REG(reg) |
477 EXT_MDIO_DEVADDR(devaddr));
478 if ((sc->alc_flags & ALC_FLAG_LINK) != 0)
479 clk = MDIO_CLK_25_128;
482 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_READ |
483 MDIO_SUP_PREAMBLE | clk | MDIO_MODE_EXT);
484 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
486 v = CSR_READ_4(sc, ALC_MDIO);
487 if ((v & MDIO_OP_BUSY) == 0)
492 device_printf(sc->alc_dev, "phy ext read timeout : %d, %d\n",
497 return ((v & MDIO_DATA_MASK) >> MDIO_DATA_SHIFT);
501 alc_miiext_writereg(struct alc_softc *sc, int devaddr, int reg, int val)
506 CSR_WRITE_4(sc, ALC_EXT_MDIO, EXT_MDIO_REG(reg) |
507 EXT_MDIO_DEVADDR(devaddr));
508 if ((sc->alc_flags & ALC_FLAG_LINK) != 0)
509 clk = MDIO_CLK_25_128;
512 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_WRITE |
513 ((val & MDIO_DATA_MASK) << MDIO_DATA_SHIFT) |
514 MDIO_SUP_PREAMBLE | clk | MDIO_MODE_EXT);
515 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
517 v = CSR_READ_4(sc, ALC_MDIO);
518 if ((v & MDIO_OP_BUSY) == 0)
523 device_printf(sc->alc_dev, "phy ext write timeout : %d, %d\n",
530 alc_dsp_fixup(struct alc_softc *sc, int media)
532 uint16_t agc, len, val;
534 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
536 if (AR816X_REV(sc->alc_rev) >= AR816X_REV_C0)
541 * 1000BT/AZ, wrong cable length
543 if ((sc->alc_flags & ALC_FLAG_LINK) != 0) {
544 len = alc_miiext_readreg(sc, MII_EXT_PCS, MII_EXT_CLDCTL6);
545 len = (len >> EXT_CLDCTL6_CAB_LEN_SHIFT) &
546 EXT_CLDCTL6_CAB_LEN_MASK;
547 agc = alc_miidbg_readreg(sc, MII_DBG_AGC);
548 agc = (agc >> DBG_AGC_2_VGA_SHIFT) & DBG_AGC_2_VGA_MASK;
549 if ((media == IFM_1000_T && len > EXT_CLDCTL6_CAB_LEN_SHORT1G &&
550 agc > DBG_AGC_LONG1G_LIMT) ||
551 (media == IFM_100_TX && len > DBG_AGC_LONG100M_LIMT &&
552 agc > DBG_AGC_LONG1G_LIMT)) {
553 alc_miidbg_writereg(sc, MII_DBG_AZ_ANADECT,
554 DBG_AZ_ANADECT_LONG);
555 val = alc_miiext_readreg(sc, MII_EXT_ANEG,
557 val |= ANEG_AFEE_10BT_100M_TH;
558 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_AFE,
561 alc_miidbg_writereg(sc, MII_DBG_AZ_ANADECT,
562 DBG_AZ_ANADECT_DEFAULT);
563 val = alc_miiext_readreg(sc, MII_EXT_ANEG,
565 val &= ~ANEG_AFEE_10BT_100M_TH;
566 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_AFE,
569 if ((sc->alc_flags & ALC_FLAG_LINK_WAR) != 0 &&
570 AR816X_REV(sc->alc_rev) == AR816X_REV_B0) {
571 if (media == IFM_1000_T) {
573 * Giga link threshold, raise the tolerance of
576 val = alc_miidbg_readreg(sc, MII_DBG_MSE20DB);
577 val &= ~DBG_MSE20DB_TH_MASK;
578 val |= (DBG_MSE20DB_TH_HI <<
579 DBG_MSE20DB_TH_SHIFT);
580 alc_miidbg_writereg(sc, MII_DBG_MSE20DB, val);
581 } else if (media == IFM_100_TX)
582 alc_miidbg_writereg(sc, MII_DBG_MSE16DB,
586 val = alc_miiext_readreg(sc, MII_EXT_ANEG, MII_EXT_ANEG_AFE);
587 val &= ~ANEG_AFEE_10BT_100M_TH;
588 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_AFE, val);
589 if ((sc->alc_flags & ALC_FLAG_LINK_WAR) != 0 &&
590 AR816X_REV(sc->alc_rev) == AR816X_REV_B0) {
591 alc_miidbg_writereg(sc, MII_DBG_MSE16DB,
593 val = alc_miidbg_readreg(sc, MII_DBG_MSE20DB);
594 val &= ~DBG_MSE20DB_TH_MASK;
595 val |= (DBG_MSE20DB_TH_DEFAULT << DBG_MSE20DB_TH_SHIFT);
596 alc_miidbg_writereg(sc, MII_DBG_MSE20DB, val);
602 alc_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr)
604 struct alc_softc *sc;
605 struct mii_data *mii;
609 if ((ifp->if_flags & IFF_UP) == 0) {
613 mii = device_get_softc(sc->alc_miibus);
616 ifmr->ifm_status = mii->mii_media_status;
617 ifmr->ifm_active = mii->mii_media_active;
622 alc_mediachange(struct ifnet *ifp)
624 struct alc_softc *sc;
629 error = alc_mediachange_locked(sc);
636 alc_mediachange_locked(struct alc_softc *sc)
638 struct mii_data *mii;
639 struct mii_softc *miisc;
644 mii = device_get_softc(sc->alc_miibus);
645 LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
647 error = mii_mediachg(mii);
652 static struct alc_ident *
653 alc_find_ident(device_t dev)
655 struct alc_ident *ident;
656 uint16_t vendor, devid;
658 vendor = pci_get_vendor(dev);
659 devid = pci_get_device(dev);
660 for (ident = alc_ident_table; ident->name != NULL; ident++) {
661 if (vendor == ident->vendorid && devid == ident->deviceid)
669 alc_probe(device_t dev)
671 struct alc_ident *ident;
673 ident = alc_find_ident(dev);
675 device_set_desc(dev, ident->name);
676 return (BUS_PROBE_DEFAULT);
683 alc_get_macaddr(struct alc_softc *sc)
686 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
687 alc_get_macaddr_816x(sc);
689 alc_get_macaddr_813x(sc);
693 alc_get_macaddr_813x(struct alc_softc *sc)
700 opt = CSR_READ_4(sc, ALC_OPT_CFG);
701 if ((CSR_READ_4(sc, ALC_MASTER_CFG) & MASTER_OTP_SEL) != 0 &&
702 (CSR_READ_4(sc, ALC_TWSI_DEBUG) & TWSI_DEBUG_DEV_EXIST) != 0) {
704 * EEPROM found, let TWSI reload EEPROM configuration.
705 * This will set ethernet address of controller.
708 switch (sc->alc_ident->deviceid) {
709 case DEVICEID_ATHEROS_AR8131:
710 case DEVICEID_ATHEROS_AR8132:
711 if ((opt & OPT_CFG_CLK_ENB) == 0) {
712 opt |= OPT_CFG_CLK_ENB;
713 CSR_WRITE_4(sc, ALC_OPT_CFG, opt);
714 CSR_READ_4(sc, ALC_OPT_CFG);
718 case DEVICEID_ATHEROS_AR8151:
719 case DEVICEID_ATHEROS_AR8151_V2:
720 case DEVICEID_ATHEROS_AR8152_B:
721 case DEVICEID_ATHEROS_AR8152_B2:
722 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
723 ALC_MII_DBG_ADDR, 0x00);
724 val = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
726 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
727 ALC_MII_DBG_DATA, val & 0xFF7F);
728 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
729 ALC_MII_DBG_ADDR, 0x3B);
730 val = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
732 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
733 ALC_MII_DBG_DATA, val | 0x0008);
738 CSR_WRITE_4(sc, ALC_LTSSM_ID_CFG,
739 CSR_READ_4(sc, ALC_LTSSM_ID_CFG) & ~LTSSM_ID_WRO_ENB);
740 CSR_WRITE_4(sc, ALC_WOL_CFG, 0);
741 CSR_READ_4(sc, ALC_WOL_CFG);
743 CSR_WRITE_4(sc, ALC_TWSI_CFG, CSR_READ_4(sc, ALC_TWSI_CFG) |
744 TWSI_CFG_SW_LD_START);
745 for (i = 100; i > 0; i--) {
747 if ((CSR_READ_4(sc, ALC_TWSI_CFG) &
748 TWSI_CFG_SW_LD_START) == 0)
752 device_printf(sc->alc_dev,
753 "reloading EEPROM timeout!\n");
756 device_printf(sc->alc_dev, "EEPROM not found!\n");
759 switch (sc->alc_ident->deviceid) {
760 case DEVICEID_ATHEROS_AR8131:
761 case DEVICEID_ATHEROS_AR8132:
762 if ((opt & OPT_CFG_CLK_ENB) != 0) {
763 opt &= ~OPT_CFG_CLK_ENB;
764 CSR_WRITE_4(sc, ALC_OPT_CFG, opt);
765 CSR_READ_4(sc, ALC_OPT_CFG);
769 case DEVICEID_ATHEROS_AR8151:
770 case DEVICEID_ATHEROS_AR8151_V2:
771 case DEVICEID_ATHEROS_AR8152_B:
772 case DEVICEID_ATHEROS_AR8152_B2:
773 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
774 ALC_MII_DBG_ADDR, 0x00);
775 val = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
777 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
778 ALC_MII_DBG_DATA, val | 0x0080);
779 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
780 ALC_MII_DBG_ADDR, 0x3B);
781 val = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
783 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
784 ALC_MII_DBG_DATA, val & 0xFFF7);
790 alc_get_macaddr_par(sc);
794 alc_get_macaddr_816x(struct alc_softc *sc)
800 /* Try to reload station address via TWSI. */
801 for (i = 100; i > 0; i--) {
802 reg = CSR_READ_4(sc, ALC_SLD);
803 if ((reg & (SLD_PROGRESS | SLD_START)) == 0)
808 CSR_WRITE_4(sc, ALC_SLD, reg | SLD_START);
809 for (i = 100; i > 0; i--) {
811 reg = CSR_READ_4(sc, ALC_SLD);
812 if ((reg & SLD_START) == 0)
817 else if (bootverbose)
818 device_printf(sc->alc_dev,
819 "reloading station address via TWSI timed out!\n");
822 /* Try to reload station address from EEPROM or FLASH. */
824 reg = CSR_READ_4(sc, ALC_EEPROM_LD);
825 if ((reg & (EEPROM_LD_EEPROM_EXIST |
826 EEPROM_LD_FLASH_EXIST)) != 0) {
827 for (i = 100; i > 0; i--) {
828 reg = CSR_READ_4(sc, ALC_EEPROM_LD);
829 if ((reg & (EEPROM_LD_PROGRESS |
830 EEPROM_LD_START)) == 0)
835 CSR_WRITE_4(sc, ALC_EEPROM_LD, reg |
837 for (i = 100; i > 0; i--) {
839 reg = CSR_READ_4(sc, ALC_EEPROM_LD);
840 if ((reg & EEPROM_LD_START) == 0)
843 } else if (bootverbose)
844 device_printf(sc->alc_dev,
845 "reloading EEPROM/FLASH timed out!\n");
849 alc_get_macaddr_par(sc);
853 alc_get_macaddr_par(struct alc_softc *sc)
857 ea[0] = CSR_READ_4(sc, ALC_PAR0);
858 ea[1] = CSR_READ_4(sc, ALC_PAR1);
859 sc->alc_eaddr[0] = (ea[1] >> 8) & 0xFF;
860 sc->alc_eaddr[1] = (ea[1] >> 0) & 0xFF;
861 sc->alc_eaddr[2] = (ea[0] >> 24) & 0xFF;
862 sc->alc_eaddr[3] = (ea[0] >> 16) & 0xFF;
863 sc->alc_eaddr[4] = (ea[0] >> 8) & 0xFF;
864 sc->alc_eaddr[5] = (ea[0] >> 0) & 0xFF;
868 alc_disable_l0s_l1(struct alc_softc *sc)
872 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
873 /* Another magic from vendor. */
874 pmcfg = CSR_READ_4(sc, ALC_PM_CFG);
875 pmcfg &= ~(PM_CFG_L1_ENTRY_TIMER_MASK | PM_CFG_CLK_SWH_L1 |
876 PM_CFG_ASPM_L0S_ENB | PM_CFG_ASPM_L1_ENB |
877 PM_CFG_MAC_ASPM_CHK | PM_CFG_SERDES_PD_EX_L1);
878 pmcfg |= PM_CFG_SERDES_BUDS_RX_L1_ENB |
879 PM_CFG_SERDES_PLL_L1_ENB | PM_CFG_SERDES_L1_ENB;
880 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg);
885 alc_phy_reset(struct alc_softc *sc)
888 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
889 alc_phy_reset_816x(sc);
891 alc_phy_reset_813x(sc);
895 alc_phy_reset_813x(struct alc_softc *sc)
899 /* Reset magic from Linux. */
900 CSR_WRITE_2(sc, ALC_GPHY_CFG, GPHY_CFG_SEL_ANA_RESET);
901 CSR_READ_2(sc, ALC_GPHY_CFG);
904 CSR_WRITE_2(sc, ALC_GPHY_CFG, GPHY_CFG_EXT_RESET |
905 GPHY_CFG_SEL_ANA_RESET);
906 CSR_READ_2(sc, ALC_GPHY_CFG);
909 /* DSP fixup, Vendor magic. */
910 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B) {
911 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
912 ALC_MII_DBG_ADDR, 0x000A);
913 data = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
915 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
916 ALC_MII_DBG_DATA, data & 0xDFFF);
918 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151 ||
919 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2 ||
920 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B ||
921 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2) {
922 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
923 ALC_MII_DBG_ADDR, 0x003B);
924 data = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
926 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
927 ALC_MII_DBG_DATA, data & 0xFFF7);
930 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151) {
931 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
932 ALC_MII_DBG_ADDR, 0x0029);
933 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
934 ALC_MII_DBG_DATA, 0x929D);
936 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8131 ||
937 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8132 ||
938 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2 ||
939 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2) {
940 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
941 ALC_MII_DBG_ADDR, 0x0029);
942 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
943 ALC_MII_DBG_DATA, 0xB6DD);
946 /* Load DSP codes, vendor magic. */
947 data = ANA_LOOP_SEL_10BT | ANA_EN_MASK_TB | ANA_EN_10BT_IDLE |
948 ((1 << ANA_INTERVAL_SEL_TIMER_SHIFT) & ANA_INTERVAL_SEL_TIMER_MASK);
949 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
950 ALC_MII_DBG_ADDR, MII_ANA_CFG18);
951 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
952 ALC_MII_DBG_DATA, data);
954 data = ((2 << ANA_SERDES_CDR_BW_SHIFT) & ANA_SERDES_CDR_BW_MASK) |
955 ANA_SERDES_EN_DEEM | ANA_SERDES_SEL_HSP | ANA_SERDES_EN_PLL |
957 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
958 ALC_MII_DBG_ADDR, MII_ANA_CFG5);
959 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
960 ALC_MII_DBG_DATA, data);
962 data = ((44 << ANA_LONG_CABLE_TH_100_SHIFT) &
963 ANA_LONG_CABLE_TH_100_MASK) |
964 ((33 << ANA_SHORT_CABLE_TH_100_SHIFT) &
965 ANA_SHORT_CABLE_TH_100_SHIFT) |
966 ANA_BP_BAD_LINK_ACCUM | ANA_BP_SMALL_BW;
967 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
968 ALC_MII_DBG_ADDR, MII_ANA_CFG54);
969 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
970 ALC_MII_DBG_DATA, data);
972 data = ((11 << ANA_IECHO_ADJ_3_SHIFT) & ANA_IECHO_ADJ_3_MASK) |
973 ((11 << ANA_IECHO_ADJ_2_SHIFT) & ANA_IECHO_ADJ_2_MASK) |
974 ((8 << ANA_IECHO_ADJ_1_SHIFT) & ANA_IECHO_ADJ_1_MASK) |
975 ((8 << ANA_IECHO_ADJ_0_SHIFT) & ANA_IECHO_ADJ_0_MASK);
976 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
977 ALC_MII_DBG_ADDR, MII_ANA_CFG4);
978 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
979 ALC_MII_DBG_DATA, data);
981 data = ((7 & ANA_MANUL_SWICH_ON_SHIFT) & ANA_MANUL_SWICH_ON_MASK) |
982 ANA_RESTART_CAL | ANA_MAN_ENABLE | ANA_SEL_HSP | ANA_EN_HB |
984 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
985 ALC_MII_DBG_ADDR, MII_ANA_CFG0);
986 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
987 ALC_MII_DBG_DATA, data);
990 /* Disable hibernation. */
991 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_ADDR,
993 data = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
996 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_DATA,
999 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_ADDR,
1001 data = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
1004 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_DATA,
1009 alc_phy_reset_816x(struct alc_softc *sc)
1013 val = CSR_READ_4(sc, ALC_GPHY_CFG);
1014 val &= ~(GPHY_CFG_EXT_RESET | GPHY_CFG_LED_MODE |
1015 GPHY_CFG_GATE_25M_ENB | GPHY_CFG_PHY_IDDQ | GPHY_CFG_PHY_PLL_ON |
1016 GPHY_CFG_PWDOWN_HW | GPHY_CFG_100AB_ENB);
1017 val |= GPHY_CFG_SEL_ANA_RESET;
1019 val |= GPHY_CFG_HIB_PULSE | GPHY_CFG_HIB_EN | GPHY_CFG_SEL_ANA_RESET;
1021 /* Disable PHY hibernation. */
1022 val &= ~(GPHY_CFG_HIB_PULSE | GPHY_CFG_HIB_EN);
1024 CSR_WRITE_4(sc, ALC_GPHY_CFG, val);
1026 CSR_WRITE_4(sc, ALC_GPHY_CFG, val | GPHY_CFG_EXT_RESET);
1029 /* Vendor PHY magic. */
1031 alc_miidbg_writereg(sc, MII_DBG_LEGCYPS, DBG_LEGCYPS_DEFAULT);
1032 alc_miidbg_writereg(sc, MII_DBG_SYSMODCTL, DBG_SYSMODCTL_DEFAULT);
1033 alc_miiext_writereg(sc, MII_EXT_PCS, MII_EXT_VDRVBIAS,
1034 EXT_VDRVBIAS_DEFAULT);
1036 /* Disable PHY hibernation. */
1037 alc_miidbg_writereg(sc, MII_DBG_LEGCYPS,
1038 DBG_LEGCYPS_DEFAULT & ~DBG_LEGCYPS_ENB);
1039 alc_miidbg_writereg(sc, MII_DBG_HIBNEG,
1040 DBG_HIBNEG_DEFAULT & ~(DBG_HIBNEG_PSHIB_EN | DBG_HIBNEG_HIB_PULSE));
1041 alc_miidbg_writereg(sc, MII_DBG_GREENCFG, DBG_GREENCFG_DEFAULT);
1044 /* XXX Disable EEE. */
1045 val = CSR_READ_4(sc, ALC_LPI_CTL);
1046 val &= ~LPI_CTL_ENB;
1047 CSR_WRITE_4(sc, ALC_LPI_CTL, val);
1048 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_LOCAL_EEEADV, 0);
1050 /* PHY power saving. */
1051 alc_miidbg_writereg(sc, MII_DBG_TST10BTCFG, DBG_TST10BTCFG_DEFAULT);
1052 alc_miidbg_writereg(sc, MII_DBG_SRDSYSMOD, DBG_SRDSYSMOD_DEFAULT);
1053 alc_miidbg_writereg(sc, MII_DBG_TST100BTCFG, DBG_TST100BTCFG_DEFAULT);
1054 alc_miidbg_writereg(sc, MII_DBG_ANACTL, DBG_ANACTL_DEFAULT);
1055 val = alc_miidbg_readreg(sc, MII_DBG_GREENCFG2);
1056 val &= ~DBG_GREENCFG2_GATE_DFSE_EN;
1057 alc_miidbg_writereg(sc, MII_DBG_GREENCFG2, val);
1059 /* RTL8139C, 120m issue. */
1060 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_NLP78,
1061 ANEG_NLP78_120M_DEFAULT);
1062 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_S3DIG10,
1063 ANEG_S3DIG10_DEFAULT);
1065 if ((sc->alc_flags & ALC_FLAG_LINK_WAR) != 0) {
1066 /* Turn off half amplitude. */
1067 val = alc_miiext_readreg(sc, MII_EXT_PCS, MII_EXT_CLDCTL3);
1068 val |= EXT_CLDCTL3_BP_CABLE1TH_DET_GT;
1069 alc_miiext_writereg(sc, MII_EXT_PCS, MII_EXT_CLDCTL3, val);
1070 /* Turn off Green feature. */
1071 val = alc_miidbg_readreg(sc, MII_DBG_GREENCFG2);
1072 val |= DBG_GREENCFG2_BP_GREEN;
1073 alc_miidbg_writereg(sc, MII_DBG_GREENCFG2, val);
1074 /* Turn off half bias. */
1075 val = alc_miiext_readreg(sc, MII_EXT_PCS, MII_EXT_CLDCTL5);
1076 val |= EXT_CLDCTL5_BP_VD_HLFBIAS;
1077 alc_miiext_writereg(sc, MII_EXT_PCS, MII_EXT_CLDCTL5, val);
1082 alc_phy_down(struct alc_softc *sc)
1086 switch (sc->alc_ident->deviceid) {
1087 case DEVICEID_ATHEROS_AR8161:
1088 case DEVICEID_ATHEROS_E2200:
1089 case DEVICEID_ATHEROS_E2400:
1090 case DEVICEID_ATHEROS_E2500:
1091 case DEVICEID_ATHEROS_AR8162:
1092 case DEVICEID_ATHEROS_AR8171:
1093 case DEVICEID_ATHEROS_AR8172:
1094 gphy = CSR_READ_4(sc, ALC_GPHY_CFG);
1095 gphy &= ~(GPHY_CFG_EXT_RESET | GPHY_CFG_LED_MODE |
1096 GPHY_CFG_100AB_ENB | GPHY_CFG_PHY_PLL_ON);
1097 gphy |= GPHY_CFG_HIB_EN | GPHY_CFG_HIB_PULSE |
1098 GPHY_CFG_SEL_ANA_RESET;
1099 gphy |= GPHY_CFG_PHY_IDDQ | GPHY_CFG_PWDOWN_HW;
1100 CSR_WRITE_4(sc, ALC_GPHY_CFG, gphy);
1102 case DEVICEID_ATHEROS_AR8151:
1103 case DEVICEID_ATHEROS_AR8151_V2:
1104 case DEVICEID_ATHEROS_AR8152_B:
1105 case DEVICEID_ATHEROS_AR8152_B2:
1107 * GPHY power down caused more problems on AR8151 v2.0.
1108 * When driver is reloaded after GPHY power down,
1109 * accesses to PHY/MAC registers hung the system. Only
1110 * cold boot recovered from it. I'm not sure whether
1111 * AR8151 v1.0 also requires this one though. I don't
1112 * have AR8151 v1.0 controller in hand.
1113 * The only option left is to isolate the PHY and
1114 * initiates power down the PHY which in turn saves
1115 * more power when driver is unloaded.
1117 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
1118 MII_BMCR, BMCR_ISO | BMCR_PDOWN);
1121 /* Force PHY down. */
1122 CSR_WRITE_2(sc, ALC_GPHY_CFG, GPHY_CFG_EXT_RESET |
1123 GPHY_CFG_SEL_ANA_RESET | GPHY_CFG_PHY_IDDQ |
1124 GPHY_CFG_PWDOWN_HW);
1131 alc_aspm(struct alc_softc *sc, int init, int media)
1134 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
1135 alc_aspm_816x(sc, init);
1137 alc_aspm_813x(sc, media);
1141 alc_aspm_813x(struct alc_softc *sc, int media)
1146 if ((sc->alc_flags & ALC_FLAG_LINK) == 0)
1149 pmcfg = CSR_READ_4(sc, ALC_PM_CFG);
1150 if ((sc->alc_flags & (ALC_FLAG_APS | ALC_FLAG_PCIE)) ==
1151 (ALC_FLAG_APS | ALC_FLAG_PCIE))
1152 linkcfg = CSR_READ_2(sc, sc->alc_expcap +
1156 pmcfg &= ~PM_CFG_SERDES_PD_EX_L1;
1157 pmcfg &= ~(PM_CFG_L1_ENTRY_TIMER_MASK | PM_CFG_LCKDET_TIMER_MASK);
1158 pmcfg |= PM_CFG_MAC_ASPM_CHK;
1159 pmcfg |= (PM_CFG_LCKDET_TIMER_DEFAULT << PM_CFG_LCKDET_TIMER_SHIFT);
1160 pmcfg &= ~(PM_CFG_ASPM_L1_ENB | PM_CFG_ASPM_L0S_ENB);
1162 if ((sc->alc_flags & ALC_FLAG_APS) != 0) {
1163 /* Disable extended sync except AR8152 B v1.0 */
1164 linkcfg &= ~PCIEM_LINK_CTL_EXTENDED_SYNC;
1165 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B &&
1166 sc->alc_rev == ATHEROS_AR8152_B_V10)
1167 linkcfg |= PCIEM_LINK_CTL_EXTENDED_SYNC;
1168 CSR_WRITE_2(sc, sc->alc_expcap + PCIER_LINK_CTL,
1170 pmcfg &= ~(PM_CFG_EN_BUFS_RX_L0S | PM_CFG_SA_DLY_ENB |
1172 pmcfg |= (PM_CFG_L1_ENTRY_TIMER_DEFAULT <<
1173 PM_CFG_L1_ENTRY_TIMER_SHIFT);
1174 pmcfg &= ~PM_CFG_PM_REQ_TIMER_MASK;
1175 pmcfg |= (PM_CFG_PM_REQ_TIMER_DEFAULT <<
1176 PM_CFG_PM_REQ_TIMER_SHIFT);
1177 pmcfg |= PM_CFG_SERDES_PD_EX_L1 | PM_CFG_PCIE_RECV;
1180 if ((sc->alc_flags & ALC_FLAG_LINK) != 0) {
1181 if ((sc->alc_flags & ALC_FLAG_L0S) != 0)
1182 pmcfg |= PM_CFG_ASPM_L0S_ENB;
1183 if ((sc->alc_flags & ALC_FLAG_L1S) != 0)
1184 pmcfg |= PM_CFG_ASPM_L1_ENB;
1185 if ((sc->alc_flags & ALC_FLAG_APS) != 0) {
1186 if (sc->alc_ident->deviceid ==
1187 DEVICEID_ATHEROS_AR8152_B)
1188 pmcfg &= ~PM_CFG_ASPM_L0S_ENB;
1189 pmcfg &= ~(PM_CFG_SERDES_L1_ENB |
1190 PM_CFG_SERDES_PLL_L1_ENB |
1191 PM_CFG_SERDES_BUDS_RX_L1_ENB);
1192 pmcfg |= PM_CFG_CLK_SWH_L1;
1193 if (media == IFM_100_TX || media == IFM_1000_T) {
1194 pmcfg &= ~PM_CFG_L1_ENTRY_TIMER_MASK;
1195 switch (sc->alc_ident->deviceid) {
1196 case DEVICEID_ATHEROS_AR8152_B:
1198 PM_CFG_L1_ENTRY_TIMER_SHIFT);
1200 case DEVICEID_ATHEROS_AR8152_B2:
1201 case DEVICEID_ATHEROS_AR8151_V2:
1203 PM_CFG_L1_ENTRY_TIMER_SHIFT);
1207 PM_CFG_L1_ENTRY_TIMER_SHIFT);
1212 pmcfg |= PM_CFG_SERDES_L1_ENB |
1213 PM_CFG_SERDES_PLL_L1_ENB |
1214 PM_CFG_SERDES_BUDS_RX_L1_ENB;
1215 pmcfg &= ~(PM_CFG_CLK_SWH_L1 |
1216 PM_CFG_ASPM_L1_ENB | PM_CFG_ASPM_L0S_ENB);
1219 pmcfg &= ~(PM_CFG_SERDES_BUDS_RX_L1_ENB | PM_CFG_SERDES_L1_ENB |
1220 PM_CFG_SERDES_PLL_L1_ENB);
1221 pmcfg |= PM_CFG_CLK_SWH_L1;
1222 if ((sc->alc_flags & ALC_FLAG_L1S) != 0)
1223 pmcfg |= PM_CFG_ASPM_L1_ENB;
1225 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg);
1229 alc_aspm_816x(struct alc_softc *sc, int init)
1233 pmcfg = CSR_READ_4(sc, ALC_PM_CFG);
1234 pmcfg &= ~PM_CFG_L1_ENTRY_TIMER_816X_MASK;
1235 pmcfg |= PM_CFG_L1_ENTRY_TIMER_816X_DEFAULT;
1236 pmcfg &= ~PM_CFG_PM_REQ_TIMER_MASK;
1237 pmcfg |= PM_CFG_PM_REQ_TIMER_816X_DEFAULT;
1238 pmcfg &= ~PM_CFG_LCKDET_TIMER_MASK;
1239 pmcfg |= PM_CFG_LCKDET_TIMER_DEFAULT;
1240 pmcfg |= PM_CFG_SERDES_PD_EX_L1 | PM_CFG_CLK_SWH_L1 | PM_CFG_PCIE_RECV;
1241 pmcfg &= ~(PM_CFG_RX_L1_AFTER_L0S | PM_CFG_TX_L1_AFTER_L0S |
1242 PM_CFG_ASPM_L1_ENB | PM_CFG_ASPM_L0S_ENB |
1243 PM_CFG_SERDES_L1_ENB | PM_CFG_SERDES_PLL_L1_ENB |
1244 PM_CFG_SERDES_BUDS_RX_L1_ENB | PM_CFG_SA_DLY_ENB |
1245 PM_CFG_MAC_ASPM_CHK | PM_CFG_HOTRST);
1246 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1 &&
1247 (sc->alc_rev & 0x01) != 0)
1248 pmcfg |= PM_CFG_SERDES_L1_ENB | PM_CFG_SERDES_PLL_L1_ENB;
1249 if ((sc->alc_flags & ALC_FLAG_LINK) != 0) {
1250 /* Link up, enable both L0s, L1s. */
1251 pmcfg |= PM_CFG_ASPM_L0S_ENB | PM_CFG_ASPM_L1_ENB |
1252 PM_CFG_MAC_ASPM_CHK;
1255 pmcfg |= PM_CFG_ASPM_L0S_ENB | PM_CFG_ASPM_L1_ENB |
1256 PM_CFG_MAC_ASPM_CHK;
1257 else if ((sc->alc_ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
1258 pmcfg |= PM_CFG_ASPM_L1_ENB | PM_CFG_MAC_ASPM_CHK;
1260 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg);
1264 alc_init_pcie(struct alc_softc *sc)
1266 const char *aspm_state[] = { "L0s/L1", "L0s", "L1", "L0s/L1" };
1267 uint32_t cap, ctl, val;
1270 /* Clear data link and flow-control protocol error. */
1271 val = CSR_READ_4(sc, ALC_PEX_UNC_ERR_SEV);
1272 val &= ~(PEX_UNC_ERR_SEV_DLP | PEX_UNC_ERR_SEV_FCP);
1273 CSR_WRITE_4(sc, ALC_PEX_UNC_ERR_SEV, val);
1275 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
1276 CSR_WRITE_4(sc, ALC_LTSSM_ID_CFG,
1277 CSR_READ_4(sc, ALC_LTSSM_ID_CFG) & ~LTSSM_ID_WRO_ENB);
1278 CSR_WRITE_4(sc, ALC_PCIE_PHYMISC,
1279 CSR_READ_4(sc, ALC_PCIE_PHYMISC) |
1280 PCIE_PHYMISC_FORCE_RCV_DET);
1281 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B &&
1282 sc->alc_rev == ATHEROS_AR8152_B_V10) {
1283 val = CSR_READ_4(sc, ALC_PCIE_PHYMISC2);
1284 val &= ~(PCIE_PHYMISC2_SERDES_CDR_MASK |
1285 PCIE_PHYMISC2_SERDES_TH_MASK);
1286 val |= 3 << PCIE_PHYMISC2_SERDES_CDR_SHIFT;
1287 val |= 3 << PCIE_PHYMISC2_SERDES_TH_SHIFT;
1288 CSR_WRITE_4(sc, ALC_PCIE_PHYMISC2, val);
1290 /* Disable ASPM L0S and L1. */
1291 cap = CSR_READ_2(sc, sc->alc_expcap + PCIER_LINK_CAP);
1292 if ((cap & PCIEM_LINK_CAP_ASPM) != 0) {
1293 ctl = CSR_READ_2(sc, sc->alc_expcap + PCIER_LINK_CTL);
1294 if ((ctl & PCIEM_LINK_CTL_RCB) != 0)
1295 sc->alc_rcb = DMA_CFG_RCB_128;
1297 device_printf(sc->alc_dev, "RCB %u bytes\n",
1298 sc->alc_rcb == DMA_CFG_RCB_64 ? 64 : 128);
1299 state = ctl & PCIEM_LINK_CTL_ASPMC;
1300 if (state & PCIEM_LINK_CTL_ASPMC_L0S)
1301 sc->alc_flags |= ALC_FLAG_L0S;
1302 if (state & PCIEM_LINK_CTL_ASPMC_L1)
1303 sc->alc_flags |= ALC_FLAG_L1S;
1305 device_printf(sc->alc_dev, "ASPM %s %s\n",
1307 state == 0 ? "disabled" : "enabled");
1308 alc_disable_l0s_l1(sc);
1311 device_printf(sc->alc_dev,
1312 "no ASPM support\n");
1315 val = CSR_READ_4(sc, ALC_PDLL_TRNS1);
1316 val &= ~PDLL_TRNS1_D3PLLOFF_ENB;
1317 CSR_WRITE_4(sc, ALC_PDLL_TRNS1, val);
1318 val = CSR_READ_4(sc, ALC_MASTER_CFG);
1319 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1 &&
1320 (sc->alc_rev & 0x01) != 0) {
1321 if ((val & MASTER_WAKEN_25M) == 0 ||
1322 (val & MASTER_CLK_SEL_DIS) == 0) {
1323 val |= MASTER_WAKEN_25M | MASTER_CLK_SEL_DIS;
1324 CSR_WRITE_4(sc, ALC_MASTER_CFG, val);
1327 if ((val & MASTER_WAKEN_25M) == 0 ||
1328 (val & MASTER_CLK_SEL_DIS) != 0) {
1329 val |= MASTER_WAKEN_25M;
1330 val &= ~MASTER_CLK_SEL_DIS;
1331 CSR_WRITE_4(sc, ALC_MASTER_CFG, val);
1335 alc_aspm(sc, 1, IFM_UNKNOWN);
1339 alc_config_msi(struct alc_softc *sc)
1343 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
1345 * It seems interrupt moderation is controlled by
1346 * ALC_MSI_RETRANS_TIMER register if MSI/MSIX is active.
1347 * Driver uses RX interrupt moderation parameter to
1348 * program ALC_MSI_RETRANS_TIMER register.
1350 ctl = CSR_READ_4(sc, ALC_MSI_RETRANS_TIMER);
1351 ctl &= ~MSI_RETRANS_TIMER_MASK;
1352 ctl &= ~MSI_RETRANS_MASK_SEL_LINE;
1353 mod = ALC_USECS(sc->alc_int_rx_mod);
1357 if ((sc->alc_flags & ALC_FLAG_MSIX) != 0)
1358 CSR_WRITE_4(sc, ALC_MSI_RETRANS_TIMER, ctl |
1359 MSI_RETRANS_MASK_SEL_STD);
1360 else if ((sc->alc_flags & ALC_FLAG_MSI) != 0)
1361 CSR_WRITE_4(sc, ALC_MSI_RETRANS_TIMER, ctl |
1362 MSI_RETRANS_MASK_SEL_LINE);
1364 CSR_WRITE_4(sc, ALC_MSI_RETRANS_TIMER, 0);
1369 alc_attach(device_t dev)
1371 struct alc_softc *sc;
1373 int base, error, i, msic, msixc;
1377 sc = device_get_softc(dev);
1379 sc->alc_rev = pci_get_revid(dev);
1381 mtx_init(&sc->alc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
1383 callout_init_mtx(&sc->alc_tick_ch, &sc->alc_mtx, 0);
1384 TASK_INIT(&sc->alc_int_task, 0, alc_int_task, sc);
1385 sc->alc_ident = alc_find_ident(dev);
1387 /* Map the device. */
1388 pci_enable_busmaster(dev);
1389 sc->alc_res_spec = alc_res_spec_mem;
1390 sc->alc_irq_spec = alc_irq_spec_legacy;
1391 error = bus_alloc_resources(dev, sc->alc_res_spec, sc->alc_res);
1393 device_printf(dev, "cannot allocate memory resources.\n");
1397 /* Set PHY address. */
1398 sc->alc_phyaddr = ALC_PHY_ADDR;
1401 * One odd thing is AR8132 uses the same PHY hardware(F1
1402 * gigabit PHY) of AR8131. So atphy(4) of AR8132 reports
1403 * the PHY supports 1000Mbps but that's not true. The PHY
1404 * used in AR8132 can't establish gigabit link even if it
1405 * shows the same PHY model/revision number of AR8131.
1407 switch (sc->alc_ident->deviceid) {
1408 case DEVICEID_ATHEROS_E2200:
1409 case DEVICEID_ATHEROS_E2400:
1410 case DEVICEID_ATHEROS_E2500:
1411 sc->alc_flags |= ALC_FLAG_E2X00;
1413 case DEVICEID_ATHEROS_AR8161:
1414 if (pci_get_subvendor(dev) == VENDORID_ATHEROS &&
1415 pci_get_subdevice(dev) == 0x0091 && sc->alc_rev == 0)
1416 sc->alc_flags |= ALC_FLAG_LINK_WAR;
1418 case DEVICEID_ATHEROS_AR8171:
1419 sc->alc_flags |= ALC_FLAG_AR816X_FAMILY;
1421 case DEVICEID_ATHEROS_AR8162:
1422 case DEVICEID_ATHEROS_AR8172:
1423 sc->alc_flags |= ALC_FLAG_FASTETHER | ALC_FLAG_AR816X_FAMILY;
1425 case DEVICEID_ATHEROS_AR8152_B:
1426 case DEVICEID_ATHEROS_AR8152_B2:
1427 sc->alc_flags |= ALC_FLAG_APS;
1429 case DEVICEID_ATHEROS_AR8132:
1430 sc->alc_flags |= ALC_FLAG_FASTETHER;
1432 case DEVICEID_ATHEROS_AR8151:
1433 case DEVICEID_ATHEROS_AR8151_V2:
1434 sc->alc_flags |= ALC_FLAG_APS;
1439 sc->alc_flags |= ALC_FLAG_JUMBO;
1442 * It seems that AR813x/AR815x has silicon bug for SMB. In
1443 * addition, Atheros said that enabling SMB wouldn't improve
1444 * performance. However I think it's bad to access lots of
1445 * registers to extract MAC statistics.
1447 sc->alc_flags |= ALC_FLAG_SMB_BUG;
1449 * Don't use Tx CMB. It is known to have silicon bug.
1451 sc->alc_flags |= ALC_FLAG_CMB_BUG;
1452 sc->alc_chip_rev = CSR_READ_4(sc, ALC_MASTER_CFG) >>
1453 MASTER_CHIP_REV_SHIFT;
1455 device_printf(dev, "PCI device revision : 0x%04x\n",
1457 device_printf(dev, "Chip id/revision : 0x%04x\n",
1459 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
1460 device_printf(dev, "AR816x revision : 0x%x\n",
1461 AR816X_REV(sc->alc_rev));
1463 device_printf(dev, "%u Tx FIFO, %u Rx FIFO\n",
1464 CSR_READ_4(sc, ALC_SRAM_TX_FIFO_LEN) * 8,
1465 CSR_READ_4(sc, ALC_SRAM_RX_FIFO_LEN) * 8);
1467 /* Initialize DMA parameters. */
1468 sc->alc_dma_rd_burst = 0;
1469 sc->alc_dma_wr_burst = 0;
1470 sc->alc_rcb = DMA_CFG_RCB_64;
1471 if (pci_find_cap(dev, PCIY_EXPRESS, &base) == 0) {
1472 sc->alc_flags |= ALC_FLAG_PCIE;
1473 sc->alc_expcap = base;
1474 burst = CSR_READ_2(sc, base + PCIER_DEVICE_CTL);
1475 sc->alc_dma_rd_burst =
1476 (burst & PCIEM_CTL_MAX_READ_REQUEST) >> 12;
1477 sc->alc_dma_wr_burst = (burst & PCIEM_CTL_MAX_PAYLOAD) >> 5;
1479 device_printf(dev, "Read request size : %u bytes.\n",
1480 alc_dma_burst[sc->alc_dma_rd_burst]);
1481 device_printf(dev, "TLP payload size : %u bytes.\n",
1482 alc_dma_burst[sc->alc_dma_wr_burst]);
1484 if (alc_dma_burst[sc->alc_dma_rd_burst] > 1024)
1485 sc->alc_dma_rd_burst = 3;
1486 if (alc_dma_burst[sc->alc_dma_wr_burst] > 1024)
1487 sc->alc_dma_wr_burst = 3;
1489 * Force maximum payload size to 128 bytes for
1490 * E2200/E2400/E2500.
1491 * Otherwise it triggers DMA write error.
1493 if ((sc->alc_flags & ALC_FLAG_E2X00) != 0)
1494 sc->alc_dma_wr_burst = 0;
1501 /* Reset the ethernet controller. */
1505 /* Allocate IRQ resources. */
1506 msixc = pci_msix_count(dev);
1507 msic = pci_msi_count(dev);
1509 device_printf(dev, "MSIX count : %d\n", msixc);
1510 device_printf(dev, "MSI count : %d\n", msic);
1517 * Prefer MSIX over MSI.
1518 * AR816x controller has a silicon bug that MSI interrupt
1519 * does not assert if PCIM_CMD_INTxDIS bit of command
1520 * register is set. pci(4) was taught to handle that case.
1522 if (msix_disable == 0 || msi_disable == 0) {
1523 if (msix_disable == 0 && msixc > 0 &&
1524 pci_alloc_msix(dev, &msixc) == 0) {
1527 "Using %d MSIX message(s).\n", msixc);
1528 sc->alc_flags |= ALC_FLAG_MSIX;
1529 sc->alc_irq_spec = alc_irq_spec_msix;
1531 pci_release_msi(dev);
1533 if (msi_disable == 0 && (sc->alc_flags & ALC_FLAG_MSIX) == 0 &&
1534 msic > 0 && pci_alloc_msi(dev, &msic) == 0) {
1537 "Using %d MSI message(s).\n", msic);
1538 sc->alc_flags |= ALC_FLAG_MSI;
1539 sc->alc_irq_spec = alc_irq_spec_msi;
1541 pci_release_msi(dev);
1545 error = bus_alloc_resources(dev, sc->alc_irq_spec, sc->alc_irq);
1547 device_printf(dev, "cannot allocate IRQ resources.\n");
1551 /* Create device sysctl node. */
1552 alc_sysctl_node(sc);
1554 if ((error = alc_dma_alloc(sc)) != 0)
1557 /* Load station address. */
1558 alc_get_macaddr(sc);
1560 ifp = sc->alc_ifp = if_alloc(IFT_ETHER);
1562 device_printf(dev, "cannot allocate ifnet structure.\n");
1568 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
1569 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
1570 ifp->if_ioctl = alc_ioctl;
1571 ifp->if_start = alc_start;
1572 ifp->if_init = alc_init;
1573 ifp->if_snd.ifq_drv_maxlen = ALC_TX_RING_CNT - 1;
1574 IFQ_SET_MAXLEN(&ifp->if_snd, ifp->if_snd.ifq_drv_maxlen);
1575 IFQ_SET_READY(&ifp->if_snd);
1576 ifp->if_capabilities = IFCAP_TXCSUM | IFCAP_TSO4;
1577 ifp->if_hwassist = ALC_CSUM_FEATURES | CSUM_TSO;
1578 if (pci_find_cap(dev, PCIY_PMG, &base) == 0) {
1579 ifp->if_capabilities |= IFCAP_WOL_MAGIC | IFCAP_WOL_MCAST;
1580 sc->alc_flags |= ALC_FLAG_PM;
1581 sc->alc_pmcap = base;
1583 ifp->if_capenable = ifp->if_capabilities;
1585 /* Set up MII bus. */
1586 error = mii_attach(dev, &sc->alc_miibus, ifp, alc_mediachange,
1587 alc_mediastatus, BMSR_DEFCAPMASK, sc->alc_phyaddr, MII_OFFSET_ANY,
1590 device_printf(dev, "attaching PHYs failed\n");
1594 ether_ifattach(ifp, sc->alc_eaddr);
1596 /* VLAN capability setup. */
1597 ifp->if_capabilities |= IFCAP_VLAN_MTU | IFCAP_VLAN_HWTAGGING |
1598 IFCAP_VLAN_HWCSUM | IFCAP_VLAN_HWTSO;
1599 ifp->if_capenable = ifp->if_capabilities;
1602 * It seems enabling Tx checksum offloading makes more trouble.
1603 * Sometimes the controller does not receive any frames when
1604 * Tx checksum offloading is enabled. I'm not sure whether this
1605 * is a bug in Tx checksum offloading logic or I got broken
1606 * sample boards. To safety, don't enable Tx checksum offloading
1607 * by default but give chance to users to toggle it if they know
1608 * their controllers work without problems.
1609 * Fortunately, Tx checksum offloading for AR816x family
1612 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
1613 ifp->if_capenable &= ~IFCAP_TXCSUM;
1614 ifp->if_hwassist &= ~ALC_CSUM_FEATURES;
1617 /* Tell the upper layer(s) we support long frames. */
1618 ifp->if_hdrlen = sizeof(struct ether_vlan_header);
1620 /* Create local taskq. */
1621 sc->alc_tq = taskqueue_create_fast("alc_taskq", M_WAITOK,
1622 taskqueue_thread_enqueue, &sc->alc_tq);
1623 if (sc->alc_tq == NULL) {
1624 device_printf(dev, "could not create taskqueue.\n");
1625 ether_ifdetach(ifp);
1629 taskqueue_start_threads(&sc->alc_tq, 1, PI_NET, "%s taskq",
1630 device_get_nameunit(sc->alc_dev));
1633 if ((sc->alc_flags & ALC_FLAG_MSIX) != 0)
1634 msic = ALC_MSIX_MESSAGES;
1635 else if ((sc->alc_flags & ALC_FLAG_MSI) != 0)
1636 msic = ALC_MSI_MESSAGES;
1639 for (i = 0; i < msic; i++) {
1640 error = bus_setup_intr(dev, sc->alc_irq[i],
1641 INTR_TYPE_NET | INTR_MPSAFE, alc_intr, NULL, sc,
1642 &sc->alc_intrhand[i]);
1647 device_printf(dev, "could not set up interrupt handler.\n");
1648 taskqueue_free(sc->alc_tq);
1650 ether_ifdetach(ifp);
1662 alc_detach(device_t dev)
1664 struct alc_softc *sc;
1668 sc = device_get_softc(dev);
1671 if (device_is_attached(dev)) {
1672 ether_ifdetach(ifp);
1676 callout_drain(&sc->alc_tick_ch);
1677 taskqueue_drain(sc->alc_tq, &sc->alc_int_task);
1680 if (sc->alc_tq != NULL) {
1681 taskqueue_drain(sc->alc_tq, &sc->alc_int_task);
1682 taskqueue_free(sc->alc_tq);
1686 if (sc->alc_miibus != NULL) {
1687 device_delete_child(dev, sc->alc_miibus);
1688 sc->alc_miibus = NULL;
1690 bus_generic_detach(dev);
1698 if ((sc->alc_flags & ALC_FLAG_MSIX) != 0)
1699 msic = ALC_MSIX_MESSAGES;
1700 else if ((sc->alc_flags & ALC_FLAG_MSI) != 0)
1701 msic = ALC_MSI_MESSAGES;
1704 for (i = 0; i < msic; i++) {
1705 if (sc->alc_intrhand[i] != NULL) {
1706 bus_teardown_intr(dev, sc->alc_irq[i],
1707 sc->alc_intrhand[i]);
1708 sc->alc_intrhand[i] = NULL;
1711 if (sc->alc_res[0] != NULL)
1713 bus_release_resources(dev, sc->alc_irq_spec, sc->alc_irq);
1714 if ((sc->alc_flags & (ALC_FLAG_MSI | ALC_FLAG_MSIX)) != 0)
1715 pci_release_msi(dev);
1716 bus_release_resources(dev, sc->alc_res_spec, sc->alc_res);
1717 mtx_destroy(&sc->alc_mtx);
1722 #define ALC_SYSCTL_STAT_ADD32(c, h, n, p, d) \
1723 SYSCTL_ADD_UINT(c, h, OID_AUTO, n, CTLFLAG_RD, p, 0, d)
1724 #define ALC_SYSCTL_STAT_ADD64(c, h, n, p, d) \
1725 SYSCTL_ADD_UQUAD(c, h, OID_AUTO, n, CTLFLAG_RD, p, d)
1728 alc_sysctl_node(struct alc_softc *sc)
1730 struct sysctl_ctx_list *ctx;
1731 struct sysctl_oid_list *child, *parent;
1732 struct sysctl_oid *tree;
1733 struct alc_hw_stats *stats;
1736 stats = &sc->alc_stats;
1737 ctx = device_get_sysctl_ctx(sc->alc_dev);
1738 child = SYSCTL_CHILDREN(device_get_sysctl_tree(sc->alc_dev));
1740 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "int_rx_mod",
1741 CTLTYPE_INT | CTLFLAG_RW, &sc->alc_int_rx_mod, 0,
1742 sysctl_hw_alc_int_mod, "I", "alc Rx interrupt moderation");
1743 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "int_tx_mod",
1744 CTLTYPE_INT | CTLFLAG_RW, &sc->alc_int_tx_mod, 0,
1745 sysctl_hw_alc_int_mod, "I", "alc Tx interrupt moderation");
1746 /* Pull in device tunables. */
1747 sc->alc_int_rx_mod = ALC_IM_RX_TIMER_DEFAULT;
1748 error = resource_int_value(device_get_name(sc->alc_dev),
1749 device_get_unit(sc->alc_dev), "int_rx_mod", &sc->alc_int_rx_mod);
1751 if (sc->alc_int_rx_mod < ALC_IM_TIMER_MIN ||
1752 sc->alc_int_rx_mod > ALC_IM_TIMER_MAX) {
1753 device_printf(sc->alc_dev, "int_rx_mod value out of "
1754 "range; using default: %d\n",
1755 ALC_IM_RX_TIMER_DEFAULT);
1756 sc->alc_int_rx_mod = ALC_IM_RX_TIMER_DEFAULT;
1759 sc->alc_int_tx_mod = ALC_IM_TX_TIMER_DEFAULT;
1760 error = resource_int_value(device_get_name(sc->alc_dev),
1761 device_get_unit(sc->alc_dev), "int_tx_mod", &sc->alc_int_tx_mod);
1763 if (sc->alc_int_tx_mod < ALC_IM_TIMER_MIN ||
1764 sc->alc_int_tx_mod > ALC_IM_TIMER_MAX) {
1765 device_printf(sc->alc_dev, "int_tx_mod value out of "
1766 "range; using default: %d\n",
1767 ALC_IM_TX_TIMER_DEFAULT);
1768 sc->alc_int_tx_mod = ALC_IM_TX_TIMER_DEFAULT;
1771 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "process_limit",
1772 CTLTYPE_INT | CTLFLAG_RW, &sc->alc_process_limit, 0,
1773 sysctl_hw_alc_proc_limit, "I",
1774 "max number of Rx events to process");
1775 /* Pull in device tunables. */
1776 sc->alc_process_limit = ALC_PROC_DEFAULT;
1777 error = resource_int_value(device_get_name(sc->alc_dev),
1778 device_get_unit(sc->alc_dev), "process_limit",
1779 &sc->alc_process_limit);
1781 if (sc->alc_process_limit < ALC_PROC_MIN ||
1782 sc->alc_process_limit > ALC_PROC_MAX) {
1783 device_printf(sc->alc_dev,
1784 "process_limit value out of range; "
1785 "using default: %d\n", ALC_PROC_DEFAULT);
1786 sc->alc_process_limit = ALC_PROC_DEFAULT;
1790 tree = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "stats", CTLFLAG_RD,
1791 NULL, "ALC statistics");
1792 parent = SYSCTL_CHILDREN(tree);
1794 /* Rx statistics. */
1795 tree = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "rx", CTLFLAG_RD,
1796 NULL, "Rx MAC statistics");
1797 child = SYSCTL_CHILDREN(tree);
1798 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_frames",
1799 &stats->rx_frames, "Good frames");
1800 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_bcast_frames",
1801 &stats->rx_bcast_frames, "Good broadcast frames");
1802 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_mcast_frames",
1803 &stats->rx_mcast_frames, "Good multicast frames");
1804 ALC_SYSCTL_STAT_ADD32(ctx, child, "pause_frames",
1805 &stats->rx_pause_frames, "Pause control frames");
1806 ALC_SYSCTL_STAT_ADD32(ctx, child, "control_frames",
1807 &stats->rx_control_frames, "Control frames");
1808 ALC_SYSCTL_STAT_ADD32(ctx, child, "crc_errs",
1809 &stats->rx_crcerrs, "CRC errors");
1810 ALC_SYSCTL_STAT_ADD32(ctx, child, "len_errs",
1811 &stats->rx_lenerrs, "Frames with length mismatched");
1812 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_octets",
1813 &stats->rx_bytes, "Good octets");
1814 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_bcast_octets",
1815 &stats->rx_bcast_bytes, "Good broadcast octets");
1816 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_mcast_octets",
1817 &stats->rx_mcast_bytes, "Good multicast octets");
1818 ALC_SYSCTL_STAT_ADD32(ctx, child, "runts",
1819 &stats->rx_runts, "Too short frames");
1820 ALC_SYSCTL_STAT_ADD32(ctx, child, "fragments",
1821 &stats->rx_fragments, "Fragmented frames");
1822 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_64",
1823 &stats->rx_pkts_64, "64 bytes frames");
1824 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_65_127",
1825 &stats->rx_pkts_65_127, "65 to 127 bytes frames");
1826 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_128_255",
1827 &stats->rx_pkts_128_255, "128 to 255 bytes frames");
1828 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_256_511",
1829 &stats->rx_pkts_256_511, "256 to 511 bytes frames");
1830 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_512_1023",
1831 &stats->rx_pkts_512_1023, "512 to 1023 bytes frames");
1832 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_1024_1518",
1833 &stats->rx_pkts_1024_1518, "1024 to 1518 bytes frames");
1834 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_1519_max",
1835 &stats->rx_pkts_1519_max, "1519 to max frames");
1836 ALC_SYSCTL_STAT_ADD32(ctx, child, "trunc_errs",
1837 &stats->rx_pkts_truncated, "Truncated frames due to MTU size");
1838 ALC_SYSCTL_STAT_ADD32(ctx, child, "fifo_oflows",
1839 &stats->rx_fifo_oflows, "FIFO overflows");
1840 ALC_SYSCTL_STAT_ADD32(ctx, child, "rrs_errs",
1841 &stats->rx_rrs_errs, "Return status write-back errors");
1842 ALC_SYSCTL_STAT_ADD32(ctx, child, "align_errs",
1843 &stats->rx_alignerrs, "Alignment errors");
1844 ALC_SYSCTL_STAT_ADD32(ctx, child, "filtered",
1845 &stats->rx_pkts_filtered,
1846 "Frames dropped due to address filtering");
1848 /* Tx statistics. */
1849 tree = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "tx", CTLFLAG_RD,
1850 NULL, "Tx MAC statistics");
1851 child = SYSCTL_CHILDREN(tree);
1852 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_frames",
1853 &stats->tx_frames, "Good frames");
1854 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_bcast_frames",
1855 &stats->tx_bcast_frames, "Good broadcast frames");
1856 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_mcast_frames",
1857 &stats->tx_mcast_frames, "Good multicast frames");
1858 ALC_SYSCTL_STAT_ADD32(ctx, child, "pause_frames",
1859 &stats->tx_pause_frames, "Pause control frames");
1860 ALC_SYSCTL_STAT_ADD32(ctx, child, "control_frames",
1861 &stats->tx_control_frames, "Control frames");
1862 ALC_SYSCTL_STAT_ADD32(ctx, child, "excess_defers",
1863 &stats->tx_excess_defer, "Frames with excessive derferrals");
1864 ALC_SYSCTL_STAT_ADD32(ctx, child, "defers",
1865 &stats->tx_excess_defer, "Frames with derferrals");
1866 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_octets",
1867 &stats->tx_bytes, "Good octets");
1868 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_bcast_octets",
1869 &stats->tx_bcast_bytes, "Good broadcast octets");
1870 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_mcast_octets",
1871 &stats->tx_mcast_bytes, "Good multicast octets");
1872 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_64",
1873 &stats->tx_pkts_64, "64 bytes frames");
1874 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_65_127",
1875 &stats->tx_pkts_65_127, "65 to 127 bytes frames");
1876 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_128_255",
1877 &stats->tx_pkts_128_255, "128 to 255 bytes frames");
1878 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_256_511",
1879 &stats->tx_pkts_256_511, "256 to 511 bytes frames");
1880 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_512_1023",
1881 &stats->tx_pkts_512_1023, "512 to 1023 bytes frames");
1882 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_1024_1518",
1883 &stats->tx_pkts_1024_1518, "1024 to 1518 bytes frames");
1884 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_1519_max",
1885 &stats->tx_pkts_1519_max, "1519 to max frames");
1886 ALC_SYSCTL_STAT_ADD32(ctx, child, "single_colls",
1887 &stats->tx_single_colls, "Single collisions");
1888 ALC_SYSCTL_STAT_ADD32(ctx, child, "multi_colls",
1889 &stats->tx_multi_colls, "Multiple collisions");
1890 ALC_SYSCTL_STAT_ADD32(ctx, child, "late_colls",
1891 &stats->tx_late_colls, "Late collisions");
1892 ALC_SYSCTL_STAT_ADD32(ctx, child, "excess_colls",
1893 &stats->tx_excess_colls, "Excessive collisions");
1894 ALC_SYSCTL_STAT_ADD32(ctx, child, "underruns",
1895 &stats->tx_underrun, "FIFO underruns");
1896 ALC_SYSCTL_STAT_ADD32(ctx, child, "desc_underruns",
1897 &stats->tx_desc_underrun, "Descriptor write-back errors");
1898 ALC_SYSCTL_STAT_ADD32(ctx, child, "len_errs",
1899 &stats->tx_lenerrs, "Frames with length mismatched");
1900 ALC_SYSCTL_STAT_ADD32(ctx, child, "trunc_errs",
1901 &stats->tx_pkts_truncated, "Truncated frames due to MTU size");
1904 #undef ALC_SYSCTL_STAT_ADD32
1905 #undef ALC_SYSCTL_STAT_ADD64
1907 struct alc_dmamap_arg {
1908 bus_addr_t alc_busaddr;
1912 alc_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
1914 struct alc_dmamap_arg *ctx;
1919 KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs));
1921 ctx = (struct alc_dmamap_arg *)arg;
1922 ctx->alc_busaddr = segs[0].ds_addr;
1926 * Normal and high Tx descriptors shares single Tx high address.
1927 * Four Rx descriptor/return rings and CMB shares the same Rx
1931 alc_check_boundary(struct alc_softc *sc)
1933 bus_addr_t cmb_end, rx_ring_end, rr_ring_end, tx_ring_end;
1935 rx_ring_end = sc->alc_rdata.alc_rx_ring_paddr + ALC_RX_RING_SZ;
1936 rr_ring_end = sc->alc_rdata.alc_rr_ring_paddr + ALC_RR_RING_SZ;
1937 cmb_end = sc->alc_rdata.alc_cmb_paddr + ALC_CMB_SZ;
1938 tx_ring_end = sc->alc_rdata.alc_tx_ring_paddr + ALC_TX_RING_SZ;
1940 /* 4GB boundary crossing is not allowed. */
1941 if ((ALC_ADDR_HI(rx_ring_end) !=
1942 ALC_ADDR_HI(sc->alc_rdata.alc_rx_ring_paddr)) ||
1943 (ALC_ADDR_HI(rr_ring_end) !=
1944 ALC_ADDR_HI(sc->alc_rdata.alc_rr_ring_paddr)) ||
1945 (ALC_ADDR_HI(cmb_end) !=
1946 ALC_ADDR_HI(sc->alc_rdata.alc_cmb_paddr)) ||
1947 (ALC_ADDR_HI(tx_ring_end) !=
1948 ALC_ADDR_HI(sc->alc_rdata.alc_tx_ring_paddr)))
1951 * Make sure Rx return descriptor/Rx descriptor/CMB use
1952 * the same high address.
1954 if ((ALC_ADDR_HI(rx_ring_end) != ALC_ADDR_HI(rr_ring_end)) ||
1955 (ALC_ADDR_HI(rx_ring_end) != ALC_ADDR_HI(cmb_end)))
1962 alc_dma_alloc(struct alc_softc *sc)
1964 struct alc_txdesc *txd;
1965 struct alc_rxdesc *rxd;
1967 struct alc_dmamap_arg ctx;
1970 lowaddr = BUS_SPACE_MAXADDR;
1972 /* Create parent DMA tag. */
1973 error = bus_dma_tag_create(
1974 bus_get_dma_tag(sc->alc_dev), /* parent */
1975 1, 0, /* alignment, boundary */
1976 lowaddr, /* lowaddr */
1977 BUS_SPACE_MAXADDR, /* highaddr */
1978 NULL, NULL, /* filter, filterarg */
1979 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
1981 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
1983 NULL, NULL, /* lockfunc, lockarg */
1984 &sc->alc_cdata.alc_parent_tag);
1986 device_printf(sc->alc_dev,
1987 "could not create parent DMA tag.\n");
1991 /* Create DMA tag for Tx descriptor ring. */
1992 error = bus_dma_tag_create(
1993 sc->alc_cdata.alc_parent_tag, /* parent */
1994 ALC_TX_RING_ALIGN, 0, /* alignment, boundary */
1995 BUS_SPACE_MAXADDR, /* lowaddr */
1996 BUS_SPACE_MAXADDR, /* highaddr */
1997 NULL, NULL, /* filter, filterarg */
1998 ALC_TX_RING_SZ, /* maxsize */
2000 ALC_TX_RING_SZ, /* maxsegsize */
2002 NULL, NULL, /* lockfunc, lockarg */
2003 &sc->alc_cdata.alc_tx_ring_tag);
2005 device_printf(sc->alc_dev,
2006 "could not create Tx ring DMA tag.\n");
2010 /* Create DMA tag for Rx free descriptor ring. */
2011 error = bus_dma_tag_create(
2012 sc->alc_cdata.alc_parent_tag, /* parent */
2013 ALC_RX_RING_ALIGN, 0, /* alignment, boundary */
2014 BUS_SPACE_MAXADDR, /* lowaddr */
2015 BUS_SPACE_MAXADDR, /* highaddr */
2016 NULL, NULL, /* filter, filterarg */
2017 ALC_RX_RING_SZ, /* maxsize */
2019 ALC_RX_RING_SZ, /* maxsegsize */
2021 NULL, NULL, /* lockfunc, lockarg */
2022 &sc->alc_cdata.alc_rx_ring_tag);
2024 device_printf(sc->alc_dev,
2025 "could not create Rx ring DMA tag.\n");
2028 /* Create DMA tag for Rx return descriptor ring. */
2029 error = bus_dma_tag_create(
2030 sc->alc_cdata.alc_parent_tag, /* parent */
2031 ALC_RR_RING_ALIGN, 0, /* alignment, boundary */
2032 BUS_SPACE_MAXADDR, /* lowaddr */
2033 BUS_SPACE_MAXADDR, /* highaddr */
2034 NULL, NULL, /* filter, filterarg */
2035 ALC_RR_RING_SZ, /* maxsize */
2037 ALC_RR_RING_SZ, /* maxsegsize */
2039 NULL, NULL, /* lockfunc, lockarg */
2040 &sc->alc_cdata.alc_rr_ring_tag);
2042 device_printf(sc->alc_dev,
2043 "could not create Rx return ring DMA tag.\n");
2047 /* Create DMA tag for coalescing message block. */
2048 error = bus_dma_tag_create(
2049 sc->alc_cdata.alc_parent_tag, /* parent */
2050 ALC_CMB_ALIGN, 0, /* alignment, boundary */
2051 BUS_SPACE_MAXADDR, /* lowaddr */
2052 BUS_SPACE_MAXADDR, /* highaddr */
2053 NULL, NULL, /* filter, filterarg */
2054 ALC_CMB_SZ, /* maxsize */
2056 ALC_CMB_SZ, /* maxsegsize */
2058 NULL, NULL, /* lockfunc, lockarg */
2059 &sc->alc_cdata.alc_cmb_tag);
2061 device_printf(sc->alc_dev,
2062 "could not create CMB DMA tag.\n");
2065 /* Create DMA tag for status message block. */
2066 error = bus_dma_tag_create(
2067 sc->alc_cdata.alc_parent_tag, /* parent */
2068 ALC_SMB_ALIGN, 0, /* alignment, boundary */
2069 BUS_SPACE_MAXADDR, /* lowaddr */
2070 BUS_SPACE_MAXADDR, /* highaddr */
2071 NULL, NULL, /* filter, filterarg */
2072 ALC_SMB_SZ, /* maxsize */
2074 ALC_SMB_SZ, /* maxsegsize */
2076 NULL, NULL, /* lockfunc, lockarg */
2077 &sc->alc_cdata.alc_smb_tag);
2079 device_printf(sc->alc_dev,
2080 "could not create SMB DMA tag.\n");
2084 /* Allocate DMA'able memory and load the DMA map for Tx ring. */
2085 error = bus_dmamem_alloc(sc->alc_cdata.alc_tx_ring_tag,
2086 (void **)&sc->alc_rdata.alc_tx_ring,
2087 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
2088 &sc->alc_cdata.alc_tx_ring_map);
2090 device_printf(sc->alc_dev,
2091 "could not allocate DMA'able memory for Tx ring.\n");
2094 ctx.alc_busaddr = 0;
2095 error = bus_dmamap_load(sc->alc_cdata.alc_tx_ring_tag,
2096 sc->alc_cdata.alc_tx_ring_map, sc->alc_rdata.alc_tx_ring,
2097 ALC_TX_RING_SZ, alc_dmamap_cb, &ctx, 0);
2098 if (error != 0 || ctx.alc_busaddr == 0) {
2099 device_printf(sc->alc_dev,
2100 "could not load DMA'able memory for Tx ring.\n");
2103 sc->alc_rdata.alc_tx_ring_paddr = ctx.alc_busaddr;
2105 /* Allocate DMA'able memory and load the DMA map for Rx ring. */
2106 error = bus_dmamem_alloc(sc->alc_cdata.alc_rx_ring_tag,
2107 (void **)&sc->alc_rdata.alc_rx_ring,
2108 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
2109 &sc->alc_cdata.alc_rx_ring_map);
2111 device_printf(sc->alc_dev,
2112 "could not allocate DMA'able memory for Rx ring.\n");
2115 ctx.alc_busaddr = 0;
2116 error = bus_dmamap_load(sc->alc_cdata.alc_rx_ring_tag,
2117 sc->alc_cdata.alc_rx_ring_map, sc->alc_rdata.alc_rx_ring,
2118 ALC_RX_RING_SZ, alc_dmamap_cb, &ctx, 0);
2119 if (error != 0 || ctx.alc_busaddr == 0) {
2120 device_printf(sc->alc_dev,
2121 "could not load DMA'able memory for Rx ring.\n");
2124 sc->alc_rdata.alc_rx_ring_paddr = ctx.alc_busaddr;
2126 /* Allocate DMA'able memory and load the DMA map for Rx return ring. */
2127 error = bus_dmamem_alloc(sc->alc_cdata.alc_rr_ring_tag,
2128 (void **)&sc->alc_rdata.alc_rr_ring,
2129 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
2130 &sc->alc_cdata.alc_rr_ring_map);
2132 device_printf(sc->alc_dev,
2133 "could not allocate DMA'able memory for Rx return ring.\n");
2136 ctx.alc_busaddr = 0;
2137 error = bus_dmamap_load(sc->alc_cdata.alc_rr_ring_tag,
2138 sc->alc_cdata.alc_rr_ring_map, sc->alc_rdata.alc_rr_ring,
2139 ALC_RR_RING_SZ, alc_dmamap_cb, &ctx, 0);
2140 if (error != 0 || ctx.alc_busaddr == 0) {
2141 device_printf(sc->alc_dev,
2142 "could not load DMA'able memory for Tx ring.\n");
2145 sc->alc_rdata.alc_rr_ring_paddr = ctx.alc_busaddr;
2147 /* Allocate DMA'able memory and load the DMA map for CMB. */
2148 error = bus_dmamem_alloc(sc->alc_cdata.alc_cmb_tag,
2149 (void **)&sc->alc_rdata.alc_cmb,
2150 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
2151 &sc->alc_cdata.alc_cmb_map);
2153 device_printf(sc->alc_dev,
2154 "could not allocate DMA'able memory for CMB.\n");
2157 ctx.alc_busaddr = 0;
2158 error = bus_dmamap_load(sc->alc_cdata.alc_cmb_tag,
2159 sc->alc_cdata.alc_cmb_map, sc->alc_rdata.alc_cmb,
2160 ALC_CMB_SZ, alc_dmamap_cb, &ctx, 0);
2161 if (error != 0 || ctx.alc_busaddr == 0) {
2162 device_printf(sc->alc_dev,
2163 "could not load DMA'able memory for CMB.\n");
2166 sc->alc_rdata.alc_cmb_paddr = ctx.alc_busaddr;
2168 /* Allocate DMA'able memory and load the DMA map for SMB. */
2169 error = bus_dmamem_alloc(sc->alc_cdata.alc_smb_tag,
2170 (void **)&sc->alc_rdata.alc_smb,
2171 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
2172 &sc->alc_cdata.alc_smb_map);
2174 device_printf(sc->alc_dev,
2175 "could not allocate DMA'able memory for SMB.\n");
2178 ctx.alc_busaddr = 0;
2179 error = bus_dmamap_load(sc->alc_cdata.alc_smb_tag,
2180 sc->alc_cdata.alc_smb_map, sc->alc_rdata.alc_smb,
2181 ALC_SMB_SZ, alc_dmamap_cb, &ctx, 0);
2182 if (error != 0 || ctx.alc_busaddr == 0) {
2183 device_printf(sc->alc_dev,
2184 "could not load DMA'able memory for CMB.\n");
2187 sc->alc_rdata.alc_smb_paddr = ctx.alc_busaddr;
2189 /* Make sure we've not crossed 4GB boundary. */
2190 if (lowaddr != BUS_SPACE_MAXADDR_32BIT &&
2191 (error = alc_check_boundary(sc)) != 0) {
2192 device_printf(sc->alc_dev, "4GB boundary crossed, "
2193 "switching to 32bit DMA addressing mode.\n");
2196 * Limit max allowable DMA address space to 32bit
2199 lowaddr = BUS_SPACE_MAXADDR_32BIT;
2204 * Create Tx buffer parent tag.
2205 * AR81[3567]x allows 64bit DMA addressing of Tx/Rx buffers
2206 * so it needs separate parent DMA tag as parent DMA address
2207 * space could be restricted to be within 32bit address space
2208 * by 4GB boundary crossing.
2210 error = bus_dma_tag_create(
2211 bus_get_dma_tag(sc->alc_dev), /* parent */
2212 1, 0, /* alignment, boundary */
2213 BUS_SPACE_MAXADDR, /* lowaddr */
2214 BUS_SPACE_MAXADDR, /* highaddr */
2215 NULL, NULL, /* filter, filterarg */
2216 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
2218 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
2220 NULL, NULL, /* lockfunc, lockarg */
2221 &sc->alc_cdata.alc_buffer_tag);
2223 device_printf(sc->alc_dev,
2224 "could not create parent buffer DMA tag.\n");
2228 /* Create DMA tag for Tx buffers. */
2229 error = bus_dma_tag_create(
2230 sc->alc_cdata.alc_buffer_tag, /* parent */
2231 1, 0, /* alignment, boundary */
2232 BUS_SPACE_MAXADDR, /* lowaddr */
2233 BUS_SPACE_MAXADDR, /* highaddr */
2234 NULL, NULL, /* filter, filterarg */
2235 ALC_TSO_MAXSIZE, /* maxsize */
2236 ALC_MAXTXSEGS, /* nsegments */
2237 ALC_TSO_MAXSEGSIZE, /* maxsegsize */
2239 NULL, NULL, /* lockfunc, lockarg */
2240 &sc->alc_cdata.alc_tx_tag);
2242 device_printf(sc->alc_dev, "could not create Tx DMA tag.\n");
2246 /* Create DMA tag for Rx buffers. */
2247 error = bus_dma_tag_create(
2248 sc->alc_cdata.alc_buffer_tag, /* parent */
2249 ALC_RX_BUF_ALIGN, 0, /* alignment, boundary */
2250 BUS_SPACE_MAXADDR, /* lowaddr */
2251 BUS_SPACE_MAXADDR, /* highaddr */
2252 NULL, NULL, /* filter, filterarg */
2253 MCLBYTES, /* maxsize */
2255 MCLBYTES, /* maxsegsize */
2257 NULL, NULL, /* lockfunc, lockarg */
2258 &sc->alc_cdata.alc_rx_tag);
2260 device_printf(sc->alc_dev, "could not create Rx DMA tag.\n");
2263 /* Create DMA maps for Tx buffers. */
2264 for (i = 0; i < ALC_TX_RING_CNT; i++) {
2265 txd = &sc->alc_cdata.alc_txdesc[i];
2267 txd->tx_dmamap = NULL;
2268 error = bus_dmamap_create(sc->alc_cdata.alc_tx_tag, 0,
2271 device_printf(sc->alc_dev,
2272 "could not create Tx dmamap.\n");
2276 /* Create DMA maps for Rx buffers. */
2277 if ((error = bus_dmamap_create(sc->alc_cdata.alc_rx_tag, 0,
2278 &sc->alc_cdata.alc_rx_sparemap)) != 0) {
2279 device_printf(sc->alc_dev,
2280 "could not create spare Rx dmamap.\n");
2283 for (i = 0; i < ALC_RX_RING_CNT; i++) {
2284 rxd = &sc->alc_cdata.alc_rxdesc[i];
2286 rxd->rx_dmamap = NULL;
2287 error = bus_dmamap_create(sc->alc_cdata.alc_rx_tag, 0,
2290 device_printf(sc->alc_dev,
2291 "could not create Rx dmamap.\n");
2301 alc_dma_free(struct alc_softc *sc)
2303 struct alc_txdesc *txd;
2304 struct alc_rxdesc *rxd;
2308 if (sc->alc_cdata.alc_tx_tag != NULL) {
2309 for (i = 0; i < ALC_TX_RING_CNT; i++) {
2310 txd = &sc->alc_cdata.alc_txdesc[i];
2311 if (txd->tx_dmamap != NULL) {
2312 bus_dmamap_destroy(sc->alc_cdata.alc_tx_tag,
2314 txd->tx_dmamap = NULL;
2317 bus_dma_tag_destroy(sc->alc_cdata.alc_tx_tag);
2318 sc->alc_cdata.alc_tx_tag = NULL;
2321 if (sc->alc_cdata.alc_rx_tag != NULL) {
2322 for (i = 0; i < ALC_RX_RING_CNT; i++) {
2323 rxd = &sc->alc_cdata.alc_rxdesc[i];
2324 if (rxd->rx_dmamap != NULL) {
2325 bus_dmamap_destroy(sc->alc_cdata.alc_rx_tag,
2327 rxd->rx_dmamap = NULL;
2330 if (sc->alc_cdata.alc_rx_sparemap != NULL) {
2331 bus_dmamap_destroy(sc->alc_cdata.alc_rx_tag,
2332 sc->alc_cdata.alc_rx_sparemap);
2333 sc->alc_cdata.alc_rx_sparemap = NULL;
2335 bus_dma_tag_destroy(sc->alc_cdata.alc_rx_tag);
2336 sc->alc_cdata.alc_rx_tag = NULL;
2338 /* Tx descriptor ring. */
2339 if (sc->alc_cdata.alc_tx_ring_tag != NULL) {
2340 if (sc->alc_rdata.alc_tx_ring_paddr != 0)
2341 bus_dmamap_unload(sc->alc_cdata.alc_tx_ring_tag,
2342 sc->alc_cdata.alc_tx_ring_map);
2343 if (sc->alc_rdata.alc_tx_ring != NULL)
2344 bus_dmamem_free(sc->alc_cdata.alc_tx_ring_tag,
2345 sc->alc_rdata.alc_tx_ring,
2346 sc->alc_cdata.alc_tx_ring_map);
2347 sc->alc_rdata.alc_tx_ring_paddr = 0;
2348 sc->alc_rdata.alc_tx_ring = NULL;
2349 bus_dma_tag_destroy(sc->alc_cdata.alc_tx_ring_tag);
2350 sc->alc_cdata.alc_tx_ring_tag = NULL;
2353 if (sc->alc_cdata.alc_rx_ring_tag != NULL) {
2354 if (sc->alc_rdata.alc_rx_ring_paddr != 0)
2355 bus_dmamap_unload(sc->alc_cdata.alc_rx_ring_tag,
2356 sc->alc_cdata.alc_rx_ring_map);
2357 if (sc->alc_rdata.alc_rx_ring != NULL)
2358 bus_dmamem_free(sc->alc_cdata.alc_rx_ring_tag,
2359 sc->alc_rdata.alc_rx_ring,
2360 sc->alc_cdata.alc_rx_ring_map);
2361 sc->alc_rdata.alc_rx_ring_paddr = 0;
2362 sc->alc_rdata.alc_rx_ring = NULL;
2363 bus_dma_tag_destroy(sc->alc_cdata.alc_rx_ring_tag);
2364 sc->alc_cdata.alc_rx_ring_tag = NULL;
2366 /* Rx return ring. */
2367 if (sc->alc_cdata.alc_rr_ring_tag != NULL) {
2368 if (sc->alc_rdata.alc_rr_ring_paddr != 0)
2369 bus_dmamap_unload(sc->alc_cdata.alc_rr_ring_tag,
2370 sc->alc_cdata.alc_rr_ring_map);
2371 if (sc->alc_rdata.alc_rr_ring != NULL)
2372 bus_dmamem_free(sc->alc_cdata.alc_rr_ring_tag,
2373 sc->alc_rdata.alc_rr_ring,
2374 sc->alc_cdata.alc_rr_ring_map);
2375 sc->alc_rdata.alc_rr_ring_paddr = 0;
2376 sc->alc_rdata.alc_rr_ring = NULL;
2377 bus_dma_tag_destroy(sc->alc_cdata.alc_rr_ring_tag);
2378 sc->alc_cdata.alc_rr_ring_tag = NULL;
2381 if (sc->alc_cdata.alc_cmb_tag != NULL) {
2382 if (sc->alc_rdata.alc_cmb_paddr != 0)
2383 bus_dmamap_unload(sc->alc_cdata.alc_cmb_tag,
2384 sc->alc_cdata.alc_cmb_map);
2385 if (sc->alc_rdata.alc_cmb != NULL)
2386 bus_dmamem_free(sc->alc_cdata.alc_cmb_tag,
2387 sc->alc_rdata.alc_cmb,
2388 sc->alc_cdata.alc_cmb_map);
2389 sc->alc_rdata.alc_cmb_paddr = 0;
2390 sc->alc_rdata.alc_cmb = NULL;
2391 bus_dma_tag_destroy(sc->alc_cdata.alc_cmb_tag);
2392 sc->alc_cdata.alc_cmb_tag = NULL;
2395 if (sc->alc_cdata.alc_smb_tag != NULL) {
2396 if (sc->alc_rdata.alc_smb_paddr != 0)
2397 bus_dmamap_unload(sc->alc_cdata.alc_smb_tag,
2398 sc->alc_cdata.alc_smb_map);
2399 if (sc->alc_rdata.alc_smb != NULL)
2400 bus_dmamem_free(sc->alc_cdata.alc_smb_tag,
2401 sc->alc_rdata.alc_smb,
2402 sc->alc_cdata.alc_smb_map);
2403 sc->alc_rdata.alc_smb_paddr = 0;
2404 sc->alc_rdata.alc_smb = NULL;
2405 bus_dma_tag_destroy(sc->alc_cdata.alc_smb_tag);
2406 sc->alc_cdata.alc_smb_tag = NULL;
2408 if (sc->alc_cdata.alc_buffer_tag != NULL) {
2409 bus_dma_tag_destroy(sc->alc_cdata.alc_buffer_tag);
2410 sc->alc_cdata.alc_buffer_tag = NULL;
2412 if (sc->alc_cdata.alc_parent_tag != NULL) {
2413 bus_dma_tag_destroy(sc->alc_cdata.alc_parent_tag);
2414 sc->alc_cdata.alc_parent_tag = NULL;
2419 alc_shutdown(device_t dev)
2422 return (alc_suspend(dev));
2426 * Note, this driver resets the link speed to 10/100Mbps by
2427 * restarting auto-negotiation in suspend/shutdown phase but we
2428 * don't know whether that auto-negotiation would succeed or not
2429 * as driver has no control after powering off/suspend operation.
2430 * If the renegotiation fail WOL may not work. Running at 1Gbps
2431 * will draw more power than 375mA at 3.3V which is specified in
2432 * PCI specification and that would result in complete
2433 * shutdowning power to ethernet controller.
2436 * Save current negotiated media speed/duplex/flow-control to
2437 * softc and restore the same link again after resuming. PHY
2438 * handling such as power down/resetting to 100Mbps may be better
2439 * handled in suspend method in phy driver.
2442 alc_setlinkspeed(struct alc_softc *sc)
2444 struct mii_data *mii;
2447 mii = device_get_softc(sc->alc_miibus);
2450 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) ==
2451 (IFM_ACTIVE | IFM_AVALID)) {
2452 switch IFM_SUBTYPE(mii->mii_media_active) {
2463 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, MII_100T2CR, 0);
2464 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
2465 MII_ANAR, ANAR_TX_FD | ANAR_TX | ANAR_10_FD | ANAR_10 | ANAR_CSMA);
2466 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
2467 MII_BMCR, BMCR_RESET | BMCR_AUTOEN | BMCR_STARTNEG);
2471 * Poll link state until alc(4) get a 10/100Mbps link.
2473 for (i = 0; i < MII_ANEGTICKS_GIGE; i++) {
2475 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID))
2476 == (IFM_ACTIVE | IFM_AVALID)) {
2477 switch (IFM_SUBTYPE(
2478 mii->mii_media_active)) {
2488 pause("alclnk", hz);
2491 if (i == MII_ANEGTICKS_GIGE)
2492 device_printf(sc->alc_dev,
2493 "establishing a link failed, WOL may not work!");
2496 * No link, force MAC to have 100Mbps, full-duplex link.
2497 * This is the last resort and may/may not work.
2499 mii->mii_media_status = IFM_AVALID | IFM_ACTIVE;
2500 mii->mii_media_active = IFM_ETHER | IFM_100_TX | IFM_FDX;
2505 alc_setwol(struct alc_softc *sc)
2508 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
2509 alc_setwol_816x(sc);
2511 alc_setwol_813x(sc);
2515 alc_setwol_813x(struct alc_softc *sc)
2521 ALC_LOCK_ASSERT(sc);
2523 alc_disable_l0s_l1(sc);
2525 if ((sc->alc_flags & ALC_FLAG_PM) == 0) {
2527 CSR_WRITE_4(sc, ALC_WOL_CFG, 0);
2528 reg = CSR_READ_4(sc, ALC_PCIE_PHYMISC);
2529 reg |= PCIE_PHYMISC_FORCE_RCV_DET;
2530 CSR_WRITE_4(sc, ALC_PCIE_PHYMISC, reg);
2531 /* Force PHY power down. */
2533 CSR_WRITE_4(sc, ALC_MASTER_CFG,
2534 CSR_READ_4(sc, ALC_MASTER_CFG) | MASTER_CLK_SEL_DIS);
2538 if ((ifp->if_capenable & IFCAP_WOL) != 0) {
2539 if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0)
2540 alc_setlinkspeed(sc);
2541 CSR_WRITE_4(sc, ALC_MASTER_CFG,
2542 CSR_READ_4(sc, ALC_MASTER_CFG) & ~MASTER_CLK_SEL_DIS);
2546 if ((ifp->if_capenable & IFCAP_WOL_MAGIC) != 0)
2547 pmcs |= WOL_CFG_MAGIC | WOL_CFG_MAGIC_ENB;
2548 CSR_WRITE_4(sc, ALC_WOL_CFG, pmcs);
2549 reg = CSR_READ_4(sc, ALC_MAC_CFG);
2550 reg &= ~(MAC_CFG_DBG | MAC_CFG_PROMISC | MAC_CFG_ALLMULTI |
2552 if ((ifp->if_capenable & IFCAP_WOL_MCAST) != 0)
2553 reg |= MAC_CFG_ALLMULTI | MAC_CFG_BCAST;
2554 if ((ifp->if_capenable & IFCAP_WOL) != 0)
2555 reg |= MAC_CFG_RX_ENB;
2556 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
2558 reg = CSR_READ_4(sc, ALC_PCIE_PHYMISC);
2559 reg |= PCIE_PHYMISC_FORCE_RCV_DET;
2560 CSR_WRITE_4(sc, ALC_PCIE_PHYMISC, reg);
2561 if ((ifp->if_capenable & IFCAP_WOL) == 0) {
2562 /* WOL disabled, PHY power down. */
2564 CSR_WRITE_4(sc, ALC_MASTER_CFG,
2565 CSR_READ_4(sc, ALC_MASTER_CFG) | MASTER_CLK_SEL_DIS);
2568 pmstat = pci_read_config(sc->alc_dev,
2569 sc->alc_pmcap + PCIR_POWER_STATUS, 2);
2570 pmstat &= ~(PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE);
2571 if ((ifp->if_capenable & IFCAP_WOL) != 0)
2572 pmstat |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE;
2573 pci_write_config(sc->alc_dev,
2574 sc->alc_pmcap + PCIR_POWER_STATUS, pmstat, 2);
2578 alc_setwol_816x(struct alc_softc *sc)
2581 uint32_t gphy, mac, master, pmcs, reg;
2584 ALC_LOCK_ASSERT(sc);
2587 master = CSR_READ_4(sc, ALC_MASTER_CFG);
2588 master &= ~MASTER_CLK_SEL_DIS;
2589 gphy = CSR_READ_4(sc, ALC_GPHY_CFG);
2590 gphy &= ~(GPHY_CFG_EXT_RESET | GPHY_CFG_LED_MODE | GPHY_CFG_100AB_ENB |
2591 GPHY_CFG_PHY_PLL_ON);
2592 gphy |= GPHY_CFG_HIB_EN | GPHY_CFG_HIB_PULSE | GPHY_CFG_SEL_ANA_RESET;
2593 if ((sc->alc_flags & ALC_FLAG_PM) == 0) {
2594 CSR_WRITE_4(sc, ALC_WOL_CFG, 0);
2595 gphy |= GPHY_CFG_PHY_IDDQ | GPHY_CFG_PWDOWN_HW;
2596 mac = CSR_READ_4(sc, ALC_MAC_CFG);
2598 if ((ifp->if_capenable & IFCAP_WOL) != 0) {
2599 gphy |= GPHY_CFG_EXT_RESET;
2600 if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0)
2601 alc_setlinkspeed(sc);
2604 if ((ifp->if_capenable & IFCAP_WOL_MAGIC) != 0)
2605 pmcs |= WOL_CFG_MAGIC | WOL_CFG_MAGIC_ENB;
2606 CSR_WRITE_4(sc, ALC_WOL_CFG, pmcs);
2607 mac = CSR_READ_4(sc, ALC_MAC_CFG);
2608 mac &= ~(MAC_CFG_DBG | MAC_CFG_PROMISC | MAC_CFG_ALLMULTI |
2610 if ((ifp->if_capenable & IFCAP_WOL_MCAST) != 0)
2611 mac |= MAC_CFG_ALLMULTI | MAC_CFG_BCAST;
2612 if ((ifp->if_capenable & IFCAP_WOL) != 0)
2613 mac |= MAC_CFG_RX_ENB;
2614 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_S3DIG10,
2619 reg = CSR_READ_4(sc, ALC_MISC);
2620 reg &= ~MISC_INTNLOSC_OPEN;
2621 CSR_WRITE_4(sc, ALC_MISC, reg);
2622 reg |= MISC_INTNLOSC_OPEN;
2623 CSR_WRITE_4(sc, ALC_MISC, reg);
2624 CSR_WRITE_4(sc, ALC_MASTER_CFG, master);
2625 CSR_WRITE_4(sc, ALC_MAC_CFG, mac);
2626 CSR_WRITE_4(sc, ALC_GPHY_CFG, gphy);
2627 reg = CSR_READ_4(sc, ALC_PDLL_TRNS1);
2628 reg |= PDLL_TRNS1_D3PLLOFF_ENB;
2629 CSR_WRITE_4(sc, ALC_PDLL_TRNS1, reg);
2631 if ((sc->alc_flags & ALC_FLAG_PM) != 0) {
2633 pmstat = pci_read_config(sc->alc_dev,
2634 sc->alc_pmcap + PCIR_POWER_STATUS, 2);
2635 pmstat &= ~(PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE);
2636 if ((ifp->if_capenable & IFCAP_WOL) != 0)
2637 pmstat |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE;
2638 pci_write_config(sc->alc_dev,
2639 sc->alc_pmcap + PCIR_POWER_STATUS, pmstat, 2);
2644 alc_suspend(device_t dev)
2646 struct alc_softc *sc;
2648 sc = device_get_softc(dev);
2659 alc_resume(device_t dev)
2661 struct alc_softc *sc;
2665 sc = device_get_softc(dev);
2668 if ((sc->alc_flags & ALC_FLAG_PM) != 0) {
2669 /* Disable PME and clear PME status. */
2670 pmstat = pci_read_config(sc->alc_dev,
2671 sc->alc_pmcap + PCIR_POWER_STATUS, 2);
2672 if ((pmstat & PCIM_PSTAT_PMEENABLE) != 0) {
2673 pmstat &= ~PCIM_PSTAT_PMEENABLE;
2674 pci_write_config(sc->alc_dev,
2675 sc->alc_pmcap + PCIR_POWER_STATUS, pmstat, 2);
2681 if ((ifp->if_flags & IFF_UP) != 0) {
2682 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
2683 alc_init_locked(sc);
2691 alc_encap(struct alc_softc *sc, struct mbuf **m_head)
2693 struct alc_txdesc *txd, *txd_last;
2694 struct tx_desc *desc;
2698 bus_dma_segment_t txsegs[ALC_MAXTXSEGS];
2700 uint32_t cflags, hdrlen, ip_off, poff, vtag;
2701 int error, idx, nsegs, prod;
2703 ALC_LOCK_ASSERT(sc);
2705 M_ASSERTPKTHDR((*m_head));
2711 if ((m->m_pkthdr.csum_flags & (ALC_CSUM_FEATURES | CSUM_TSO)) != 0) {
2713 * AR81[3567]x requires offset of TCP/UDP header in its
2714 * Tx descriptor to perform Tx checksum offloading. TSO
2715 * also requires TCP header offset and modification of
2716 * IP/TCP header. This kind of operation takes many CPU
2717 * cycles on FreeBSD so fast host CPU is required to get
2718 * smooth TSO performance.
2720 struct ether_header *eh;
2722 if (M_WRITABLE(m) == 0) {
2723 /* Get a writable copy. */
2724 m = m_dup(*m_head, M_NOWAIT);
2725 /* Release original mbufs. */
2734 ip_off = sizeof(struct ether_header);
2735 m = m_pullup(m, ip_off);
2740 eh = mtod(m, struct ether_header *);
2742 * Check if hardware VLAN insertion is off.
2743 * Additional check for LLC/SNAP frame?
2745 if (eh->ether_type == htons(ETHERTYPE_VLAN)) {
2746 ip_off = sizeof(struct ether_vlan_header);
2747 m = m_pullup(m, ip_off);
2753 m = m_pullup(m, ip_off + sizeof(struct ip));
2758 ip = (struct ip *)(mtod(m, char *) + ip_off);
2759 poff = ip_off + (ip->ip_hl << 2);
2760 if ((m->m_pkthdr.csum_flags & CSUM_TSO) != 0) {
2761 m = m_pullup(m, poff + sizeof(struct tcphdr));
2766 tcp = (struct tcphdr *)(mtod(m, char *) + poff);
2767 m = m_pullup(m, poff + (tcp->th_off << 2));
2773 * Due to strict adherence of Microsoft NDIS
2774 * Large Send specification, hardware expects
2775 * a pseudo TCP checksum inserted by upper
2776 * stack. Unfortunately the pseudo TCP
2777 * checksum that NDIS refers to does not include
2778 * TCP payload length so driver should recompute
2779 * the pseudo checksum here. Hopefully this
2780 * wouldn't be much burden on modern CPUs.
2782 * Reset IP checksum and recompute TCP pseudo
2783 * checksum as NDIS specification said.
2785 ip = (struct ip *)(mtod(m, char *) + ip_off);
2786 tcp = (struct tcphdr *)(mtod(m, char *) + poff);
2788 tcp->th_sum = in_pseudo(ip->ip_src.s_addr,
2789 ip->ip_dst.s_addr, htons(IPPROTO_TCP));
2794 prod = sc->alc_cdata.alc_tx_prod;
2795 txd = &sc->alc_cdata.alc_txdesc[prod];
2797 map = txd->tx_dmamap;
2799 error = bus_dmamap_load_mbuf_sg(sc->alc_cdata.alc_tx_tag, map,
2800 *m_head, txsegs, &nsegs, 0);
2801 if (error == EFBIG) {
2802 m = m_collapse(*m_head, M_NOWAIT, ALC_MAXTXSEGS);
2809 error = bus_dmamap_load_mbuf_sg(sc->alc_cdata.alc_tx_tag, map,
2810 *m_head, txsegs, &nsegs, 0);
2816 } else if (error != 0)
2824 /* Check descriptor overrun. */
2825 if (sc->alc_cdata.alc_tx_cnt + nsegs >= ALC_TX_RING_CNT - 3) {
2826 bus_dmamap_unload(sc->alc_cdata.alc_tx_tag, map);
2829 bus_dmamap_sync(sc->alc_cdata.alc_tx_tag, map, BUS_DMASYNC_PREWRITE);
2832 cflags = TD_ETHERNET;
2836 /* Configure VLAN hardware tag insertion. */
2837 if ((m->m_flags & M_VLANTAG) != 0) {
2838 vtag = htons(m->m_pkthdr.ether_vtag);
2839 vtag = (vtag << TD_VLAN_SHIFT) & TD_VLAN_MASK;
2840 cflags |= TD_INS_VLAN_TAG;
2842 if ((m->m_pkthdr.csum_flags & CSUM_TSO) != 0) {
2843 /* Request TSO and set MSS. */
2844 cflags |= TD_TSO | TD_TSO_DESCV1;
2845 cflags |= ((uint32_t)m->m_pkthdr.tso_segsz << TD_MSS_SHIFT) &
2847 /* Set TCP header offset. */
2848 cflags |= (poff << TD_TCPHDR_OFFSET_SHIFT) &
2849 TD_TCPHDR_OFFSET_MASK;
2851 * AR81[3567]x requires the first buffer should
2852 * only hold IP/TCP header data. Payload should
2853 * be handled in other descriptors.
2855 hdrlen = poff + (tcp->th_off << 2);
2856 desc = &sc->alc_rdata.alc_tx_ring[prod];
2857 desc->len = htole32(TX_BYTES(hdrlen | vtag));
2858 desc->flags = htole32(cflags);
2859 desc->addr = htole64(txsegs[0].ds_addr);
2860 sc->alc_cdata.alc_tx_cnt++;
2861 ALC_DESC_INC(prod, ALC_TX_RING_CNT);
2862 if (m->m_len - hdrlen > 0) {
2863 /* Handle remaining payload of the first fragment. */
2864 desc = &sc->alc_rdata.alc_tx_ring[prod];
2865 desc->len = htole32(TX_BYTES((m->m_len - hdrlen) |
2867 desc->flags = htole32(cflags);
2868 desc->addr = htole64(txsegs[0].ds_addr + hdrlen);
2869 sc->alc_cdata.alc_tx_cnt++;
2870 ALC_DESC_INC(prod, ALC_TX_RING_CNT);
2872 /* Handle remaining fragments. */
2874 } else if ((m->m_pkthdr.csum_flags & ALC_CSUM_FEATURES) != 0) {
2875 /* Configure Tx checksum offload. */
2876 #ifdef ALC_USE_CUSTOM_CSUM
2877 cflags |= TD_CUSTOM_CSUM;
2878 /* Set checksum start offset. */
2879 cflags |= ((poff >> 1) << TD_PLOAD_OFFSET_SHIFT) &
2880 TD_PLOAD_OFFSET_MASK;
2881 /* Set checksum insertion position of TCP/UDP. */
2882 cflags |= (((poff + m->m_pkthdr.csum_data) >> 1) <<
2883 TD_CUSTOM_CSUM_OFFSET_SHIFT) & TD_CUSTOM_CSUM_OFFSET_MASK;
2885 if ((m->m_pkthdr.csum_flags & CSUM_IP) != 0)
2886 cflags |= TD_IPCSUM;
2887 if ((m->m_pkthdr.csum_flags & CSUM_TCP) != 0)
2888 cflags |= TD_TCPCSUM;
2889 if ((m->m_pkthdr.csum_flags & CSUM_UDP) != 0)
2890 cflags |= TD_UDPCSUM;
2891 /* Set TCP/UDP header offset. */
2892 cflags |= (poff << TD_L4HDR_OFFSET_SHIFT) &
2893 TD_L4HDR_OFFSET_MASK;
2896 for (; idx < nsegs; idx++) {
2897 desc = &sc->alc_rdata.alc_tx_ring[prod];
2898 desc->len = htole32(TX_BYTES(txsegs[idx].ds_len) | vtag);
2899 desc->flags = htole32(cflags);
2900 desc->addr = htole64(txsegs[idx].ds_addr);
2901 sc->alc_cdata.alc_tx_cnt++;
2902 ALC_DESC_INC(prod, ALC_TX_RING_CNT);
2904 /* Update producer index. */
2905 sc->alc_cdata.alc_tx_prod = prod;
2907 /* Finally set EOP on the last descriptor. */
2908 prod = (prod + ALC_TX_RING_CNT - 1) % ALC_TX_RING_CNT;
2909 desc = &sc->alc_rdata.alc_tx_ring[prod];
2910 desc->flags |= htole32(TD_EOP);
2912 /* Swap dmamap of the first and the last. */
2913 txd = &sc->alc_cdata.alc_txdesc[prod];
2914 map = txd_last->tx_dmamap;
2915 txd_last->tx_dmamap = txd->tx_dmamap;
2916 txd->tx_dmamap = map;
2923 alc_start(struct ifnet *ifp)
2925 struct alc_softc *sc;
2929 alc_start_locked(ifp);
2934 alc_start_locked(struct ifnet *ifp)
2936 struct alc_softc *sc;
2937 struct mbuf *m_head;
2942 ALC_LOCK_ASSERT(sc);
2944 /* Reclaim transmitted frames. */
2945 if (sc->alc_cdata.alc_tx_cnt >= ALC_TX_DESC_HIWAT)
2948 if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) !=
2949 IFF_DRV_RUNNING || (sc->alc_flags & ALC_FLAG_LINK) == 0)
2952 for (enq = 0; !IFQ_DRV_IS_EMPTY(&ifp->if_snd); ) {
2953 IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head);
2957 * Pack the data into the transmit ring. If we
2958 * don't have room, set the OACTIVE flag and wait
2959 * for the NIC to drain the ring.
2961 if (alc_encap(sc, &m_head)) {
2964 IFQ_DRV_PREPEND(&ifp->if_snd, m_head);
2965 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2971 * If there's a BPF listener, bounce a copy of this frame
2974 ETHER_BPF_MTAP(ifp, m_head);
2978 /* Sync descriptors. */
2979 bus_dmamap_sync(sc->alc_cdata.alc_tx_ring_tag,
2980 sc->alc_cdata.alc_tx_ring_map, BUS_DMASYNC_PREWRITE);
2981 /* Kick. Assume we're using normal Tx priority queue. */
2982 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
2983 CSR_WRITE_2(sc, ALC_MBOX_TD_PRI0_PROD_IDX,
2984 (uint16_t)sc->alc_cdata.alc_tx_prod);
2986 CSR_WRITE_4(sc, ALC_MBOX_TD_PROD_IDX,
2987 (sc->alc_cdata.alc_tx_prod <<
2988 MBOX_TD_PROD_LO_IDX_SHIFT) &
2989 MBOX_TD_PROD_LO_IDX_MASK);
2990 /* Set a timeout in case the chip goes out to lunch. */
2991 sc->alc_watchdog_timer = ALC_TX_TIMEOUT;
2996 alc_watchdog(struct alc_softc *sc)
3000 ALC_LOCK_ASSERT(sc);
3002 if (sc->alc_watchdog_timer == 0 || --sc->alc_watchdog_timer)
3006 if ((sc->alc_flags & ALC_FLAG_LINK) == 0) {
3007 if_printf(sc->alc_ifp, "watchdog timeout (lost link)\n");
3008 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
3009 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
3010 alc_init_locked(sc);
3013 if_printf(sc->alc_ifp, "watchdog timeout -- resetting\n");
3014 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
3015 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
3016 alc_init_locked(sc);
3017 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
3018 alc_start_locked(ifp);
3022 alc_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
3024 struct alc_softc *sc;
3026 struct mii_data *mii;
3030 ifr = (struct ifreq *)data;
3034 if (ifr->ifr_mtu < ETHERMIN ||
3035 ifr->ifr_mtu > (sc->alc_ident->max_framelen -
3036 sizeof(struct ether_vlan_header) - ETHER_CRC_LEN) ||
3037 ((sc->alc_flags & ALC_FLAG_JUMBO) == 0 &&
3038 ifr->ifr_mtu > ETHERMTU))
3040 else if (ifp->if_mtu != ifr->ifr_mtu) {
3042 ifp->if_mtu = ifr->ifr_mtu;
3043 /* AR81[3567]x has 13 bits MSS field. */
3044 if (ifp->if_mtu > ALC_TSO_MTU &&
3045 (ifp->if_capenable & IFCAP_TSO4) != 0) {
3046 ifp->if_capenable &= ~IFCAP_TSO4;
3047 ifp->if_hwassist &= ~CSUM_TSO;
3048 VLAN_CAPABILITIES(ifp);
3055 if ((ifp->if_flags & IFF_UP) != 0) {
3056 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0 &&
3057 ((ifp->if_flags ^ sc->alc_if_flags) &
3058 (IFF_PROMISC | IFF_ALLMULTI)) != 0)
3061 alc_init_locked(sc);
3062 } else if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
3064 sc->alc_if_flags = ifp->if_flags;
3070 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
3076 mii = device_get_softc(sc->alc_miibus);
3077 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, cmd);
3081 mask = ifr->ifr_reqcap ^ ifp->if_capenable;
3082 if ((mask & IFCAP_TXCSUM) != 0 &&
3083 (ifp->if_capabilities & IFCAP_TXCSUM) != 0) {
3084 ifp->if_capenable ^= IFCAP_TXCSUM;
3085 if ((ifp->if_capenable & IFCAP_TXCSUM) != 0)
3086 ifp->if_hwassist |= ALC_CSUM_FEATURES;
3088 ifp->if_hwassist &= ~ALC_CSUM_FEATURES;
3090 if ((mask & IFCAP_TSO4) != 0 &&
3091 (ifp->if_capabilities & IFCAP_TSO4) != 0) {
3092 ifp->if_capenable ^= IFCAP_TSO4;
3093 if ((ifp->if_capenable & IFCAP_TSO4) != 0) {
3094 /* AR81[3567]x has 13 bits MSS field. */
3095 if (ifp->if_mtu > ALC_TSO_MTU) {
3096 ifp->if_capenable &= ~IFCAP_TSO4;
3097 ifp->if_hwassist &= ~CSUM_TSO;
3099 ifp->if_hwassist |= CSUM_TSO;
3101 ifp->if_hwassist &= ~CSUM_TSO;
3103 if ((mask & IFCAP_WOL_MCAST) != 0 &&
3104 (ifp->if_capabilities & IFCAP_WOL_MCAST) != 0)
3105 ifp->if_capenable ^= IFCAP_WOL_MCAST;
3106 if ((mask & IFCAP_WOL_MAGIC) != 0 &&
3107 (ifp->if_capabilities & IFCAP_WOL_MAGIC) != 0)
3108 ifp->if_capenable ^= IFCAP_WOL_MAGIC;
3109 if ((mask & IFCAP_VLAN_HWTAGGING) != 0 &&
3110 (ifp->if_capabilities & IFCAP_VLAN_HWTAGGING) != 0) {
3111 ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING;
3114 if ((mask & IFCAP_VLAN_HWCSUM) != 0 &&
3115 (ifp->if_capabilities & IFCAP_VLAN_HWCSUM) != 0)
3116 ifp->if_capenable ^= IFCAP_VLAN_HWCSUM;
3117 if ((mask & IFCAP_VLAN_HWTSO) != 0 &&
3118 (ifp->if_capabilities & IFCAP_VLAN_HWTSO) != 0)
3119 ifp->if_capenable ^= IFCAP_VLAN_HWTSO;
3120 if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) == 0)
3121 ifp->if_capenable &=
3122 ~(IFCAP_VLAN_HWTSO | IFCAP_VLAN_HWCSUM);
3124 VLAN_CAPABILITIES(ifp);
3127 error = ether_ioctl(ifp, cmd, data);
3135 alc_mac_config(struct alc_softc *sc)
3137 struct mii_data *mii;
3140 ALC_LOCK_ASSERT(sc);
3142 mii = device_get_softc(sc->alc_miibus);
3143 reg = CSR_READ_4(sc, ALC_MAC_CFG);
3144 reg &= ~(MAC_CFG_FULL_DUPLEX | MAC_CFG_TX_FC | MAC_CFG_RX_FC |
3145 MAC_CFG_SPEED_MASK);
3146 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0 ||
3147 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151 ||
3148 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2 ||
3149 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2)
3150 reg |= MAC_CFG_HASH_ALG_CRC32 | MAC_CFG_SPEED_MODE_SW;
3151 /* Reprogram MAC with resolved speed/duplex. */
3152 switch (IFM_SUBTYPE(mii->mii_media_active)) {
3155 reg |= MAC_CFG_SPEED_10_100;
3158 reg |= MAC_CFG_SPEED_1000;
3161 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) {
3162 reg |= MAC_CFG_FULL_DUPLEX;
3163 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_TXPAUSE) != 0)
3164 reg |= MAC_CFG_TX_FC;
3165 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_RXPAUSE) != 0)
3166 reg |= MAC_CFG_RX_FC;
3168 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
3172 alc_stats_clear(struct alc_softc *sc)
3174 struct smb sb, *smb;
3178 if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0) {
3179 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag,
3180 sc->alc_cdata.alc_smb_map,
3181 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
3182 smb = sc->alc_rdata.alc_smb;
3183 /* Update done, clear. */
3185 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag,
3186 sc->alc_cdata.alc_smb_map,
3187 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
3189 for (reg = &sb.rx_frames, i = 0; reg <= &sb.rx_pkts_filtered;
3191 CSR_READ_4(sc, ALC_RX_MIB_BASE + i);
3192 i += sizeof(uint32_t);
3194 /* Read Tx statistics. */
3195 for (reg = &sb.tx_frames, i = 0; reg <= &sb.tx_mcast_bytes;
3197 CSR_READ_4(sc, ALC_TX_MIB_BASE + i);
3198 i += sizeof(uint32_t);
3204 alc_stats_update(struct alc_softc *sc)
3206 struct alc_hw_stats *stat;
3207 struct smb sb, *smb;
3212 ALC_LOCK_ASSERT(sc);
3215 stat = &sc->alc_stats;
3216 if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0) {
3217 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag,
3218 sc->alc_cdata.alc_smb_map,
3219 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
3220 smb = sc->alc_rdata.alc_smb;
3221 if (smb->updated == 0)
3225 /* Read Rx statistics. */
3226 for (reg = &sb.rx_frames, i = 0; reg <= &sb.rx_pkts_filtered;
3228 *reg = CSR_READ_4(sc, ALC_RX_MIB_BASE + i);
3229 i += sizeof(uint32_t);
3231 /* Read Tx statistics. */
3232 for (reg = &sb.tx_frames, i = 0; reg <= &sb.tx_mcast_bytes;
3234 *reg = CSR_READ_4(sc, ALC_TX_MIB_BASE + i);
3235 i += sizeof(uint32_t);
3240 stat->rx_frames += smb->rx_frames;
3241 stat->rx_bcast_frames += smb->rx_bcast_frames;
3242 stat->rx_mcast_frames += smb->rx_mcast_frames;
3243 stat->rx_pause_frames += smb->rx_pause_frames;
3244 stat->rx_control_frames += smb->rx_control_frames;
3245 stat->rx_crcerrs += smb->rx_crcerrs;
3246 stat->rx_lenerrs += smb->rx_lenerrs;
3247 stat->rx_bytes += smb->rx_bytes;
3248 stat->rx_runts += smb->rx_runts;
3249 stat->rx_fragments += smb->rx_fragments;
3250 stat->rx_pkts_64 += smb->rx_pkts_64;
3251 stat->rx_pkts_65_127 += smb->rx_pkts_65_127;
3252 stat->rx_pkts_128_255 += smb->rx_pkts_128_255;
3253 stat->rx_pkts_256_511 += smb->rx_pkts_256_511;
3254 stat->rx_pkts_512_1023 += smb->rx_pkts_512_1023;
3255 stat->rx_pkts_1024_1518 += smb->rx_pkts_1024_1518;
3256 stat->rx_pkts_1519_max += smb->rx_pkts_1519_max;
3257 stat->rx_pkts_truncated += smb->rx_pkts_truncated;
3258 stat->rx_fifo_oflows += smb->rx_fifo_oflows;
3259 stat->rx_rrs_errs += smb->rx_rrs_errs;
3260 stat->rx_alignerrs += smb->rx_alignerrs;
3261 stat->rx_bcast_bytes += smb->rx_bcast_bytes;
3262 stat->rx_mcast_bytes += smb->rx_mcast_bytes;
3263 stat->rx_pkts_filtered += smb->rx_pkts_filtered;
3266 stat->tx_frames += smb->tx_frames;
3267 stat->tx_bcast_frames += smb->tx_bcast_frames;
3268 stat->tx_mcast_frames += smb->tx_mcast_frames;
3269 stat->tx_pause_frames += smb->tx_pause_frames;
3270 stat->tx_excess_defer += smb->tx_excess_defer;
3271 stat->tx_control_frames += smb->tx_control_frames;
3272 stat->tx_deferred += smb->tx_deferred;
3273 stat->tx_bytes += smb->tx_bytes;
3274 stat->tx_pkts_64 += smb->tx_pkts_64;
3275 stat->tx_pkts_65_127 += smb->tx_pkts_65_127;
3276 stat->tx_pkts_128_255 += smb->tx_pkts_128_255;
3277 stat->tx_pkts_256_511 += smb->tx_pkts_256_511;
3278 stat->tx_pkts_512_1023 += smb->tx_pkts_512_1023;
3279 stat->tx_pkts_1024_1518 += smb->tx_pkts_1024_1518;
3280 stat->tx_pkts_1519_max += smb->tx_pkts_1519_max;
3281 stat->tx_single_colls += smb->tx_single_colls;
3282 stat->tx_multi_colls += smb->tx_multi_colls;
3283 stat->tx_late_colls += smb->tx_late_colls;
3284 stat->tx_excess_colls += smb->tx_excess_colls;
3285 stat->tx_underrun += smb->tx_underrun;
3286 stat->tx_desc_underrun += smb->tx_desc_underrun;
3287 stat->tx_lenerrs += smb->tx_lenerrs;
3288 stat->tx_pkts_truncated += smb->tx_pkts_truncated;
3289 stat->tx_bcast_bytes += smb->tx_bcast_bytes;
3290 stat->tx_mcast_bytes += smb->tx_mcast_bytes;
3292 /* Update counters in ifnet. */
3293 if_inc_counter(ifp, IFCOUNTER_OPACKETS, smb->tx_frames);
3295 if_inc_counter(ifp, IFCOUNTER_COLLISIONS, smb->tx_single_colls +
3296 smb->tx_multi_colls * 2 + smb->tx_late_colls +
3297 smb->tx_excess_colls * HDPX_CFG_RETRY_DEFAULT);
3299 if_inc_counter(ifp, IFCOUNTER_OERRORS, smb->tx_late_colls +
3300 smb->tx_excess_colls + smb->tx_underrun + smb->tx_pkts_truncated);
3302 if_inc_counter(ifp, IFCOUNTER_IPACKETS, smb->rx_frames);
3304 if_inc_counter(ifp, IFCOUNTER_IERRORS,
3305 smb->rx_crcerrs + smb->rx_lenerrs +
3306 smb->rx_runts + smb->rx_pkts_truncated +
3307 smb->rx_fifo_oflows + smb->rx_rrs_errs +
3310 if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0) {
3311 /* Update done, clear. */
3313 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag,
3314 sc->alc_cdata.alc_smb_map,
3315 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
3322 struct alc_softc *sc;
3325 sc = (struct alc_softc *)arg;
3327 status = CSR_READ_4(sc, ALC_INTR_STATUS);
3328 if ((status & ALC_INTRS) == 0)
3329 return (FILTER_STRAY);
3330 /* Disable interrupts. */
3331 CSR_WRITE_4(sc, ALC_INTR_STATUS, INTR_DIS_INT);
3332 taskqueue_enqueue(sc->alc_tq, &sc->alc_int_task);
3334 return (FILTER_HANDLED);
3338 alc_int_task(void *arg, int pending)
3340 struct alc_softc *sc;
3345 sc = (struct alc_softc *)arg;
3348 status = CSR_READ_4(sc, ALC_INTR_STATUS);
3350 if (sc->alc_morework != 0) {
3351 sc->alc_morework = 0;
3352 status |= INTR_RX_PKT;
3354 if ((status & ALC_INTRS) == 0)
3357 /* Acknowledge interrupts but still disable interrupts. */
3358 CSR_WRITE_4(sc, ALC_INTR_STATUS, status | INTR_DIS_INT);
3361 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) {
3362 if ((status & INTR_RX_PKT) != 0) {
3363 more = alc_rxintr(sc, sc->alc_process_limit);
3365 sc->alc_morework = 1;
3366 else if (more == EIO) {
3367 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
3368 alc_init_locked(sc);
3373 if ((status & (INTR_DMA_RD_TO_RST | INTR_DMA_WR_TO_RST |
3374 INTR_TXQ_TO_RST)) != 0) {
3375 if ((status & INTR_DMA_RD_TO_RST) != 0)
3376 device_printf(sc->alc_dev,
3377 "DMA read error! -- resetting\n");
3378 if ((status & INTR_DMA_WR_TO_RST) != 0)
3379 device_printf(sc->alc_dev,
3380 "DMA write error! -- resetting\n");
3381 if ((status & INTR_TXQ_TO_RST) != 0)
3382 device_printf(sc->alc_dev,
3383 "TxQ reset! -- resetting\n");
3384 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
3385 alc_init_locked(sc);
3389 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0 &&
3390 !IFQ_DRV_IS_EMPTY(&ifp->if_snd))
3391 alc_start_locked(ifp);
3394 if (more == EAGAIN ||
3395 (CSR_READ_4(sc, ALC_INTR_STATUS) & ALC_INTRS) != 0) {
3397 taskqueue_enqueue(sc->alc_tq, &sc->alc_int_task);
3402 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) {
3403 /* Re-enable interrupts if we're running. */
3404 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0x7FFFFFFF);
3410 alc_txeof(struct alc_softc *sc)
3413 struct alc_txdesc *txd;
3414 uint32_t cons, prod;
3417 ALC_LOCK_ASSERT(sc);
3421 if (sc->alc_cdata.alc_tx_cnt == 0)
3423 bus_dmamap_sync(sc->alc_cdata.alc_tx_ring_tag,
3424 sc->alc_cdata.alc_tx_ring_map, BUS_DMASYNC_POSTWRITE);
3425 if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0) {
3426 bus_dmamap_sync(sc->alc_cdata.alc_cmb_tag,
3427 sc->alc_cdata.alc_cmb_map, BUS_DMASYNC_POSTREAD);
3428 prod = sc->alc_rdata.alc_cmb->cons;
3430 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
3431 prod = CSR_READ_2(sc, ALC_MBOX_TD_PRI0_CONS_IDX);
3433 prod = CSR_READ_4(sc, ALC_MBOX_TD_CONS_IDX);
3434 /* Assume we're using normal Tx priority queue. */
3435 prod = (prod & MBOX_TD_CONS_LO_IDX_MASK) >>
3436 MBOX_TD_CONS_LO_IDX_SHIFT;
3439 cons = sc->alc_cdata.alc_tx_cons;
3441 * Go through our Tx list and free mbufs for those
3442 * frames which have been transmitted.
3444 for (prog = 0; cons != prod; prog++,
3445 ALC_DESC_INC(cons, ALC_TX_RING_CNT)) {
3446 if (sc->alc_cdata.alc_tx_cnt <= 0)
3449 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
3450 sc->alc_cdata.alc_tx_cnt--;
3451 txd = &sc->alc_cdata.alc_txdesc[cons];
3452 if (txd->tx_m != NULL) {
3453 /* Reclaim transmitted mbufs. */
3454 bus_dmamap_sync(sc->alc_cdata.alc_tx_tag,
3455 txd->tx_dmamap, BUS_DMASYNC_POSTWRITE);
3456 bus_dmamap_unload(sc->alc_cdata.alc_tx_tag,
3463 if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0)
3464 bus_dmamap_sync(sc->alc_cdata.alc_cmb_tag,
3465 sc->alc_cdata.alc_cmb_map, BUS_DMASYNC_PREREAD);
3466 sc->alc_cdata.alc_tx_cons = cons;
3468 * Unarm watchdog timer only when there is no pending
3469 * frames in Tx queue.
3471 if (sc->alc_cdata.alc_tx_cnt == 0)
3472 sc->alc_watchdog_timer = 0;
3476 alc_newbuf(struct alc_softc *sc, struct alc_rxdesc *rxd)
3479 bus_dma_segment_t segs[1];
3483 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
3486 m->m_len = m->m_pkthdr.len = RX_BUF_SIZE_MAX;
3487 #ifndef __NO_STRICT_ALIGNMENT
3488 m_adj(m, sizeof(uint64_t));
3491 if (bus_dmamap_load_mbuf_sg(sc->alc_cdata.alc_rx_tag,
3492 sc->alc_cdata.alc_rx_sparemap, m, segs, &nsegs, 0) != 0) {
3496 KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs));
3498 if (rxd->rx_m != NULL) {
3499 bus_dmamap_sync(sc->alc_cdata.alc_rx_tag, rxd->rx_dmamap,
3500 BUS_DMASYNC_POSTREAD);
3501 bus_dmamap_unload(sc->alc_cdata.alc_rx_tag, rxd->rx_dmamap);
3503 map = rxd->rx_dmamap;
3504 rxd->rx_dmamap = sc->alc_cdata.alc_rx_sparemap;
3505 sc->alc_cdata.alc_rx_sparemap = map;
3506 bus_dmamap_sync(sc->alc_cdata.alc_rx_tag, rxd->rx_dmamap,
3507 BUS_DMASYNC_PREREAD);
3509 rxd->rx_desc->addr = htole64(segs[0].ds_addr);
3514 alc_rxintr(struct alc_softc *sc, int count)
3517 struct rx_rdesc *rrd;
3518 uint32_t nsegs, status;
3521 bus_dmamap_sync(sc->alc_cdata.alc_rr_ring_tag,
3522 sc->alc_cdata.alc_rr_ring_map,
3523 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
3524 bus_dmamap_sync(sc->alc_cdata.alc_rx_ring_tag,
3525 sc->alc_cdata.alc_rx_ring_map, BUS_DMASYNC_POSTWRITE);
3526 rr_cons = sc->alc_cdata.alc_rr_cons;
3528 for (prog = 0; (ifp->if_drv_flags & IFF_DRV_RUNNING) != 0;) {
3531 rrd = &sc->alc_rdata.alc_rr_ring[rr_cons];
3532 status = le32toh(rrd->status);
3533 if ((status & RRD_VALID) == 0)
3535 nsegs = RRD_RD_CNT(le32toh(rrd->rdinfo));
3537 /* This should not happen! */
3538 device_printf(sc->alc_dev,
3539 "unexpected segment count -- resetting\n");
3543 /* Clear Rx return status. */
3545 ALC_DESC_INC(rr_cons, ALC_RR_RING_CNT);
3546 sc->alc_cdata.alc_rx_cons += nsegs;
3547 sc->alc_cdata.alc_rx_cons %= ALC_RR_RING_CNT;
3552 /* Update the consumer index. */
3553 sc->alc_cdata.alc_rr_cons = rr_cons;
3554 /* Sync Rx return descriptors. */
3555 bus_dmamap_sync(sc->alc_cdata.alc_rr_ring_tag,
3556 sc->alc_cdata.alc_rr_ring_map,
3557 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
3559 * Sync updated Rx descriptors such that controller see
3560 * modified buffer addresses.
3562 bus_dmamap_sync(sc->alc_cdata.alc_rx_ring_tag,
3563 sc->alc_cdata.alc_rx_ring_map, BUS_DMASYNC_PREWRITE);
3565 * Let controller know availability of new Rx buffers.
3566 * Since alc(4) use RXQ_CFG_RD_BURST_DEFAULT descriptors
3567 * it may be possible to update ALC_MBOX_RD0_PROD_IDX
3568 * only when Rx buffer pre-fetching is required. In
3569 * addition we already set ALC_RX_RD_FREE_THRESH to
3570 * RX_RD_FREE_THRESH_LO_DEFAULT descriptors. However
3571 * it still seems that pre-fetching needs more
3574 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
3575 CSR_WRITE_2(sc, ALC_MBOX_RD0_PROD_IDX,
3576 (uint16_t)sc->alc_cdata.alc_rx_cons);
3578 CSR_WRITE_4(sc, ALC_MBOX_RD0_PROD_IDX,
3579 sc->alc_cdata.alc_rx_cons);
3582 return (count > 0 ? 0 : EAGAIN);
3585 #ifndef __NO_STRICT_ALIGNMENT
3586 static struct mbuf *
3587 alc_fixup_rx(struct ifnet *ifp, struct mbuf *m)
3591 uint16_t *src, *dst;
3593 src = mtod(m, uint16_t *);
3596 if (m->m_next == NULL) {
3597 for (i = 0; i < (m->m_len / sizeof(uint16_t) + 1); i++)
3603 * Append a new mbuf to received mbuf chain and copy ethernet
3604 * header from the mbuf chain. This can save lots of CPU
3605 * cycles for jumbo frame.
3607 MGETHDR(n, M_NOWAIT, MT_DATA);
3609 if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1);
3613 bcopy(m->m_data, n->m_data, ETHER_HDR_LEN);
3614 m->m_data += ETHER_HDR_LEN;
3615 m->m_len -= ETHER_HDR_LEN;
3616 n->m_len = ETHER_HDR_LEN;
3617 M_MOVE_PKTHDR(n, m);
3623 /* Receive a frame. */
3625 alc_rxeof(struct alc_softc *sc, struct rx_rdesc *rrd)
3627 struct alc_rxdesc *rxd;
3629 struct mbuf *mp, *m;
3630 uint32_t rdinfo, status, vtag;
3631 int count, nsegs, rx_cons;
3634 status = le32toh(rrd->status);
3635 rdinfo = le32toh(rrd->rdinfo);
3636 rx_cons = RRD_RD_IDX(rdinfo);
3637 nsegs = RRD_RD_CNT(rdinfo);
3639 sc->alc_cdata.alc_rxlen = RRD_BYTES(status);
3640 if ((status & (RRD_ERR_SUM | RRD_ERR_LENGTH)) != 0) {
3642 * We want to pass the following frames to upper
3643 * layer regardless of error status of Rx return
3646 * o IP/TCP/UDP checksum is bad.
3647 * o frame length and protocol specific length
3650 * Force network stack compute checksum for
3653 status |= RRD_TCP_UDPCSUM_NOK | RRD_IPCSUM_NOK;
3654 if ((status & (RRD_ERR_CRC | RRD_ERR_ALIGN |
3655 RRD_ERR_TRUNC | RRD_ERR_RUNT)) != 0)
3659 for (count = 0; count < nsegs; count++,
3660 ALC_DESC_INC(rx_cons, ALC_RX_RING_CNT)) {
3661 rxd = &sc->alc_cdata.alc_rxdesc[rx_cons];
3663 /* Add a new receive buffer to the ring. */
3664 if (alc_newbuf(sc, rxd) != 0) {
3665 if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1);
3666 /* Reuse Rx buffers. */
3667 if (sc->alc_cdata.alc_rxhead != NULL)
3668 m_freem(sc->alc_cdata.alc_rxhead);
3673 * Assume we've received a full sized frame.
3674 * Actual size is fixed when we encounter the end of
3675 * multi-segmented frame.
3677 mp->m_len = sc->alc_buf_size;
3679 /* Chain received mbufs. */
3680 if (sc->alc_cdata.alc_rxhead == NULL) {
3681 sc->alc_cdata.alc_rxhead = mp;
3682 sc->alc_cdata.alc_rxtail = mp;
3684 mp->m_flags &= ~M_PKTHDR;
3685 sc->alc_cdata.alc_rxprev_tail =
3686 sc->alc_cdata.alc_rxtail;
3687 sc->alc_cdata.alc_rxtail->m_next = mp;
3688 sc->alc_cdata.alc_rxtail = mp;
3691 if (count == nsegs - 1) {
3692 /* Last desc. for this frame. */
3693 m = sc->alc_cdata.alc_rxhead;
3694 m->m_flags |= M_PKTHDR;
3696 * It seems that L1C/L2C controller has no way
3697 * to tell hardware to strip CRC bytes.
3700 sc->alc_cdata.alc_rxlen - ETHER_CRC_LEN;
3702 /* Set last mbuf size. */
3703 mp->m_len = sc->alc_cdata.alc_rxlen -
3704 (nsegs - 1) * sc->alc_buf_size;
3705 /* Remove the CRC bytes in chained mbufs. */
3706 if (mp->m_len <= ETHER_CRC_LEN) {
3707 sc->alc_cdata.alc_rxtail =
3708 sc->alc_cdata.alc_rxprev_tail;
3709 sc->alc_cdata.alc_rxtail->m_len -=
3710 (ETHER_CRC_LEN - mp->m_len);
3711 sc->alc_cdata.alc_rxtail->m_next = NULL;
3714 mp->m_len -= ETHER_CRC_LEN;
3717 m->m_len = m->m_pkthdr.len;
3718 m->m_pkthdr.rcvif = ifp;
3720 * Due to hardware bugs, Rx checksum offloading
3721 * was intentionally disabled.
3723 if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) != 0 &&
3724 (status & RRD_VLAN_TAG) != 0) {
3725 vtag = RRD_VLAN(le32toh(rrd->vtag));
3726 m->m_pkthdr.ether_vtag = ntohs(vtag);
3727 m->m_flags |= M_VLANTAG;
3729 #ifndef __NO_STRICT_ALIGNMENT
3730 m = alc_fixup_rx(ifp, m);
3736 (*ifp->if_input)(ifp, m);
3741 /* Reset mbuf chains. */
3742 ALC_RXCHAIN_RESET(sc);
3748 struct alc_softc *sc;
3749 struct mii_data *mii;
3751 sc = (struct alc_softc *)arg;
3753 ALC_LOCK_ASSERT(sc);
3755 mii = device_get_softc(sc->alc_miibus);
3757 alc_stats_update(sc);
3759 * alc(4) does not rely on Tx completion interrupts to reclaim
3760 * transferred buffers. Instead Tx completion interrupts are
3761 * used to hint for scheduling Tx task. So it's necessary to
3762 * release transmitted buffers by kicking Tx completion
3763 * handler. This limits the maximum reclamation delay to a hz.
3767 callout_reset(&sc->alc_tick_ch, hz, alc_tick, sc);
3771 alc_osc_reset(struct alc_softc *sc)
3775 reg = CSR_READ_4(sc, ALC_MISC3);
3776 reg &= ~MISC3_25M_BY_SW;
3777 reg |= MISC3_25M_NOTO_INTNL;
3778 CSR_WRITE_4(sc, ALC_MISC3, reg);
3780 reg = CSR_READ_4(sc, ALC_MISC);
3781 if (AR816X_REV(sc->alc_rev) >= AR816X_REV_B0) {
3783 * Restore over-current protection default value.
3784 * This value could be reset by MAC reset.
3786 reg &= ~MISC_PSW_OCP_MASK;
3787 reg |= (MISC_PSW_OCP_DEFAULT << MISC_PSW_OCP_SHIFT);
3788 reg &= ~MISC_INTNLOSC_OPEN;
3789 CSR_WRITE_4(sc, ALC_MISC, reg);
3790 CSR_WRITE_4(sc, ALC_MISC, reg | MISC_INTNLOSC_OPEN);
3791 reg = CSR_READ_4(sc, ALC_MISC2);
3792 reg &= ~MISC2_CALB_START;
3793 CSR_WRITE_4(sc, ALC_MISC2, reg);
3794 CSR_WRITE_4(sc, ALC_MISC2, reg | MISC2_CALB_START);
3797 reg &= ~MISC_INTNLOSC_OPEN;
3798 /* Disable isolate for revision A devices. */
3799 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1)
3800 reg &= ~MISC_ISO_ENB;
3801 CSR_WRITE_4(sc, ALC_MISC, reg | MISC_INTNLOSC_OPEN);
3802 CSR_WRITE_4(sc, ALC_MISC, reg);
3809 alc_reset(struct alc_softc *sc)
3811 uint32_t pmcfg, reg;
3815 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
3816 /* Reset workaround. */
3817 CSR_WRITE_4(sc, ALC_MBOX_RD0_PROD_IDX, 1);
3818 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1 &&
3819 (sc->alc_rev & 0x01) != 0) {
3820 /* Disable L0s/L1s before reset. */
3821 pmcfg = CSR_READ_4(sc, ALC_PM_CFG);
3822 if ((pmcfg & (PM_CFG_ASPM_L0S_ENB | PM_CFG_ASPM_L1_ENB))
3824 pmcfg &= ~(PM_CFG_ASPM_L0S_ENB |
3825 PM_CFG_ASPM_L1_ENB);
3826 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg);
3830 reg = CSR_READ_4(sc, ALC_MASTER_CFG);
3831 reg |= MASTER_OOB_DIS_OFF | MASTER_RESET;
3832 CSR_WRITE_4(sc, ALC_MASTER_CFG, reg);
3834 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
3835 for (i = ALC_RESET_TIMEOUT; i > 0; i--) {
3837 if (CSR_READ_4(sc, ALC_MBOX_RD0_PROD_IDX) == 0)
3841 device_printf(sc->alc_dev, "MAC reset timeout!\n");
3843 for (i = ALC_RESET_TIMEOUT; i > 0; i--) {
3845 if ((CSR_READ_4(sc, ALC_MASTER_CFG) & MASTER_RESET) == 0)
3849 device_printf(sc->alc_dev, "master reset timeout!\n");
3851 for (i = ALC_RESET_TIMEOUT; i > 0; i--) {
3852 reg = CSR_READ_4(sc, ALC_IDLE_STATUS);
3853 if ((reg & (IDLE_STATUS_RXMAC | IDLE_STATUS_TXMAC |
3854 IDLE_STATUS_RXQ | IDLE_STATUS_TXQ)) == 0)
3859 device_printf(sc->alc_dev, "reset timeout(0x%08x)!\n", reg);
3861 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
3862 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1 &&
3863 (sc->alc_rev & 0x01) != 0) {
3864 reg = CSR_READ_4(sc, ALC_MASTER_CFG);
3865 reg |= MASTER_CLK_SEL_DIS;
3866 CSR_WRITE_4(sc, ALC_MASTER_CFG, reg);
3867 /* Restore L0s/L1s config. */
3868 if ((pmcfg & (PM_CFG_ASPM_L0S_ENB | PM_CFG_ASPM_L1_ENB))
3870 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg);
3874 reg = CSR_READ_4(sc, ALC_MISC3);
3875 reg &= ~MISC3_25M_BY_SW;
3876 reg |= MISC3_25M_NOTO_INTNL;
3877 CSR_WRITE_4(sc, ALC_MISC3, reg);
3878 reg = CSR_READ_4(sc, ALC_MISC);
3879 reg &= ~MISC_INTNLOSC_OPEN;
3880 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1)
3881 reg &= ~MISC_ISO_ENB;
3882 CSR_WRITE_4(sc, ALC_MISC, reg);
3885 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0 ||
3886 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B ||
3887 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2)
3888 CSR_WRITE_4(sc, ALC_SERDES_LOCK,
3889 CSR_READ_4(sc, ALC_SERDES_LOCK) | SERDES_MAC_CLK_SLOWDOWN |
3890 SERDES_PHY_CLK_SLOWDOWN);
3896 struct alc_softc *sc;
3898 sc = (struct alc_softc *)xsc;
3900 alc_init_locked(sc);
3905 alc_init_locked(struct alc_softc *sc)
3908 struct mii_data *mii;
3909 uint8_t eaddr[ETHER_ADDR_LEN];
3911 uint32_t reg, rxf_hi, rxf_lo;
3913 ALC_LOCK_ASSERT(sc);
3916 mii = device_get_softc(sc->alc_miibus);
3918 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
3921 * Cancel any pending I/O.
3925 * Reset the chip to a known state.
3929 /* Initialize Rx descriptors. */
3930 if (alc_init_rx_ring(sc) != 0) {
3931 device_printf(sc->alc_dev, "no memory for Rx buffers.\n");
3935 alc_init_rr_ring(sc);
3936 alc_init_tx_ring(sc);
3940 /* Enable all clocks. */
3941 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
3942 CSR_WRITE_4(sc, ALC_CLK_GATING_CFG, CLK_GATING_DMAW_ENB |
3943 CLK_GATING_DMAR_ENB | CLK_GATING_TXQ_ENB |
3944 CLK_GATING_RXQ_ENB | CLK_GATING_TXMAC_ENB |
3945 CLK_GATING_RXMAC_ENB);
3946 if (AR816X_REV(sc->alc_rev) >= AR816X_REV_B0)
3947 CSR_WRITE_4(sc, ALC_IDLE_DECISN_TIMER,
3948 IDLE_DECISN_TIMER_DEFAULT_1MS);
3950 CSR_WRITE_4(sc, ALC_CLK_GATING_CFG, 0);
3952 /* Reprogram the station address. */
3953 bcopy(IF_LLADDR(ifp), eaddr, ETHER_ADDR_LEN);
3954 CSR_WRITE_4(sc, ALC_PAR0,
3955 eaddr[2] << 24 | eaddr[3] << 16 | eaddr[4] << 8 | eaddr[5]);
3956 CSR_WRITE_4(sc, ALC_PAR1, eaddr[0] << 8 | eaddr[1]);
3958 * Clear WOL status and disable all WOL feature as WOL
3959 * would interfere Rx operation under normal environments.
3961 CSR_READ_4(sc, ALC_WOL_CFG);
3962 CSR_WRITE_4(sc, ALC_WOL_CFG, 0);
3963 /* Set Tx descriptor base addresses. */
3964 paddr = sc->alc_rdata.alc_tx_ring_paddr;
3965 CSR_WRITE_4(sc, ALC_TX_BASE_ADDR_HI, ALC_ADDR_HI(paddr));
3966 CSR_WRITE_4(sc, ALC_TDL_HEAD_ADDR_LO, ALC_ADDR_LO(paddr));
3967 /* We don't use high priority ring. */
3968 CSR_WRITE_4(sc, ALC_TDH_HEAD_ADDR_LO, 0);
3969 /* Set Tx descriptor counter. */
3970 CSR_WRITE_4(sc, ALC_TD_RING_CNT,
3971 (ALC_TX_RING_CNT << TD_RING_CNT_SHIFT) & TD_RING_CNT_MASK);
3972 /* Set Rx descriptor base addresses. */
3973 paddr = sc->alc_rdata.alc_rx_ring_paddr;
3974 CSR_WRITE_4(sc, ALC_RX_BASE_ADDR_HI, ALC_ADDR_HI(paddr));
3975 CSR_WRITE_4(sc, ALC_RD0_HEAD_ADDR_LO, ALC_ADDR_LO(paddr));
3976 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
3977 /* We use one Rx ring. */
3978 CSR_WRITE_4(sc, ALC_RD1_HEAD_ADDR_LO, 0);
3979 CSR_WRITE_4(sc, ALC_RD2_HEAD_ADDR_LO, 0);
3980 CSR_WRITE_4(sc, ALC_RD3_HEAD_ADDR_LO, 0);
3982 /* Set Rx descriptor counter. */
3983 CSR_WRITE_4(sc, ALC_RD_RING_CNT,
3984 (ALC_RX_RING_CNT << RD_RING_CNT_SHIFT) & RD_RING_CNT_MASK);
3987 * Let hardware split jumbo frames into alc_max_buf_sized chunks.
3988 * if it do not fit the buffer size. Rx return descriptor holds
3989 * a counter that indicates how many fragments were made by the
3990 * hardware. The buffer size should be multiple of 8 bytes.
3991 * Since hardware has limit on the size of buffer size, always
3992 * use the maximum value.
3993 * For strict-alignment architectures make sure to reduce buffer
3994 * size by 8 bytes to make room for alignment fixup.
3996 #ifndef __NO_STRICT_ALIGNMENT
3997 sc->alc_buf_size = RX_BUF_SIZE_MAX - sizeof(uint64_t);
3999 sc->alc_buf_size = RX_BUF_SIZE_MAX;
4001 CSR_WRITE_4(sc, ALC_RX_BUF_SIZE, sc->alc_buf_size);
4003 paddr = sc->alc_rdata.alc_rr_ring_paddr;
4004 /* Set Rx return descriptor base addresses. */
4005 CSR_WRITE_4(sc, ALC_RRD0_HEAD_ADDR_LO, ALC_ADDR_LO(paddr));
4006 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
4007 /* We use one Rx return ring. */
4008 CSR_WRITE_4(sc, ALC_RRD1_HEAD_ADDR_LO, 0);
4009 CSR_WRITE_4(sc, ALC_RRD2_HEAD_ADDR_LO, 0);
4010 CSR_WRITE_4(sc, ALC_RRD3_HEAD_ADDR_LO, 0);
4012 /* Set Rx return descriptor counter. */
4013 CSR_WRITE_4(sc, ALC_RRD_RING_CNT,
4014 (ALC_RR_RING_CNT << RRD_RING_CNT_SHIFT) & RRD_RING_CNT_MASK);
4015 paddr = sc->alc_rdata.alc_cmb_paddr;
4016 CSR_WRITE_4(sc, ALC_CMB_BASE_ADDR_LO, ALC_ADDR_LO(paddr));
4017 paddr = sc->alc_rdata.alc_smb_paddr;
4018 CSR_WRITE_4(sc, ALC_SMB_BASE_ADDR_HI, ALC_ADDR_HI(paddr));
4019 CSR_WRITE_4(sc, ALC_SMB_BASE_ADDR_LO, ALC_ADDR_LO(paddr));
4021 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B) {
4022 /* Reconfigure SRAM - Vendor magic. */
4023 CSR_WRITE_4(sc, ALC_SRAM_RX_FIFO_LEN, 0x000002A0);
4024 CSR_WRITE_4(sc, ALC_SRAM_TX_FIFO_LEN, 0x00000100);
4025 CSR_WRITE_4(sc, ALC_SRAM_RX_FIFO_ADDR, 0x029F0000);
4026 CSR_WRITE_4(sc, ALC_SRAM_RD0_ADDR, 0x02BF02A0);
4027 CSR_WRITE_4(sc, ALC_SRAM_TX_FIFO_ADDR, 0x03BF02C0);
4028 CSR_WRITE_4(sc, ALC_SRAM_TD_ADDR, 0x03DF03C0);
4029 CSR_WRITE_4(sc, ALC_TXF_WATER_MARK, 0x00000000);
4030 CSR_WRITE_4(sc, ALC_RD_DMA_CFG, 0x00000000);
4033 /* Tell hardware that we're ready to load DMA blocks. */
4034 CSR_WRITE_4(sc, ALC_DMA_BLOCK, DMA_BLOCK_LOAD);
4036 /* Configure interrupt moderation timer. */
4037 reg = ALC_USECS(sc->alc_int_rx_mod) << IM_TIMER_RX_SHIFT;
4038 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0)
4039 reg |= ALC_USECS(sc->alc_int_tx_mod) << IM_TIMER_TX_SHIFT;
4040 CSR_WRITE_4(sc, ALC_IM_TIMER, reg);
4042 * We don't want to automatic interrupt clear as task queue
4043 * for the interrupt should know interrupt status.
4045 reg = CSR_READ_4(sc, ALC_MASTER_CFG);
4046 reg &= ~(MASTER_IM_RX_TIMER_ENB | MASTER_IM_TX_TIMER_ENB);
4047 reg |= MASTER_SA_TIMER_ENB;
4048 if (ALC_USECS(sc->alc_int_rx_mod) != 0)
4049 reg |= MASTER_IM_RX_TIMER_ENB;
4050 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0 &&
4051 ALC_USECS(sc->alc_int_tx_mod) != 0)
4052 reg |= MASTER_IM_TX_TIMER_ENB;
4053 CSR_WRITE_4(sc, ALC_MASTER_CFG, reg);
4055 * Disable interrupt re-trigger timer. We don't want automatic
4056 * re-triggering of un-ACKed interrupts.
4058 CSR_WRITE_4(sc, ALC_INTR_RETRIG_TIMER, ALC_USECS(0));
4059 /* Configure CMB. */
4060 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
4061 CSR_WRITE_4(sc, ALC_CMB_TD_THRESH, ALC_TX_RING_CNT / 3);
4062 CSR_WRITE_4(sc, ALC_CMB_TX_TIMER,
4063 ALC_USECS(sc->alc_int_tx_mod));
4065 if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0) {
4066 CSR_WRITE_4(sc, ALC_CMB_TD_THRESH, 4);
4067 CSR_WRITE_4(sc, ALC_CMB_TX_TIMER, ALC_USECS(5000));
4069 CSR_WRITE_4(sc, ALC_CMB_TX_TIMER, ALC_USECS(0));
4072 * Hardware can be configured to issue SMB interrupt based
4073 * on programmed interval. Since there is a callout that is
4074 * invoked for every hz in driver we use that instead of
4075 * relying on periodic SMB interrupt.
4077 CSR_WRITE_4(sc, ALC_SMB_STAT_TIMER, ALC_USECS(0));
4078 /* Clear MAC statistics. */
4079 alc_stats_clear(sc);
4082 * Always use maximum frame size that controller can support.
4083 * Otherwise received frames that has larger frame length
4084 * than alc(4) MTU would be silently dropped in hardware. This
4085 * would make path-MTU discovery hard as sender wouldn't get
4086 * any responses from receiver. alc(4) supports
4087 * multi-fragmented frames on Rx path so it has no issue on
4088 * assembling fragmented frames. Using maximum frame size also
4089 * removes the need to reinitialize hardware when interface
4090 * MTU configuration was changed.
4092 * Be conservative in what you do, be liberal in what you
4093 * accept from others - RFC 793.
4095 CSR_WRITE_4(sc, ALC_FRAME_SIZE, sc->alc_ident->max_framelen);
4097 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
4098 /* Disable header split(?) */
4099 CSR_WRITE_4(sc, ALC_HDS_CFG, 0);
4101 /* Configure IPG/IFG parameters. */
4102 CSR_WRITE_4(sc, ALC_IPG_IFG_CFG,
4103 ((IPG_IFG_IPGT_DEFAULT << IPG_IFG_IPGT_SHIFT) &
4104 IPG_IFG_IPGT_MASK) |
4105 ((IPG_IFG_MIFG_DEFAULT << IPG_IFG_MIFG_SHIFT) &
4106 IPG_IFG_MIFG_MASK) |
4107 ((IPG_IFG_IPG1_DEFAULT << IPG_IFG_IPG1_SHIFT) &
4108 IPG_IFG_IPG1_MASK) |
4109 ((IPG_IFG_IPG2_DEFAULT << IPG_IFG_IPG2_SHIFT) &
4110 IPG_IFG_IPG2_MASK));
4111 /* Set parameters for half-duplex media. */
4112 CSR_WRITE_4(sc, ALC_HDPX_CFG,
4113 ((HDPX_CFG_LCOL_DEFAULT << HDPX_CFG_LCOL_SHIFT) &
4114 HDPX_CFG_LCOL_MASK) |
4115 ((HDPX_CFG_RETRY_DEFAULT << HDPX_CFG_RETRY_SHIFT) &
4116 HDPX_CFG_RETRY_MASK) | HDPX_CFG_EXC_DEF_EN |
4117 ((HDPX_CFG_ABEBT_DEFAULT << HDPX_CFG_ABEBT_SHIFT) &
4118 HDPX_CFG_ABEBT_MASK) |
4119 ((HDPX_CFG_JAMIPG_DEFAULT << HDPX_CFG_JAMIPG_SHIFT) &
4120 HDPX_CFG_JAMIPG_MASK));
4124 * Set TSO/checksum offload threshold. For frames that is
4125 * larger than this threshold, hardware wouldn't do
4126 * TSO/checksum offloading.
4128 reg = (sc->alc_ident->max_framelen >> TSO_OFFLOAD_THRESH_UNIT_SHIFT) &
4129 TSO_OFFLOAD_THRESH_MASK;
4130 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
4131 reg |= TSO_OFFLOAD_ERRLGPKT_DROP_ENB;
4132 CSR_WRITE_4(sc, ALC_TSO_OFFLOAD_THRESH, reg);
4133 /* Configure TxQ. */
4134 reg = (alc_dma_burst[sc->alc_dma_rd_burst] <<
4135 TXQ_CFG_TX_FIFO_BURST_SHIFT) & TXQ_CFG_TX_FIFO_BURST_MASK;
4136 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B ||
4137 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2)
4139 reg |= (TXQ_CFG_TD_BURST_DEFAULT << TXQ_CFG_TD_BURST_SHIFT) &
4140 TXQ_CFG_TD_BURST_MASK;
4141 reg |= TXQ_CFG_IP_OPTION_ENB | TXQ_CFG_8023_ENB;
4142 CSR_WRITE_4(sc, ALC_TXQ_CFG, reg | TXQ_CFG_ENHANCED_MODE);
4143 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
4144 reg = (TXQ_CFG_TD_BURST_DEFAULT << HQTD_CFG_Q1_BURST_SHIFT |
4145 TXQ_CFG_TD_BURST_DEFAULT << HQTD_CFG_Q2_BURST_SHIFT |
4146 TXQ_CFG_TD_BURST_DEFAULT << HQTD_CFG_Q3_BURST_SHIFT |
4147 HQTD_CFG_BURST_ENB);
4148 CSR_WRITE_4(sc, ALC_HQTD_CFG, reg);
4149 reg = WRR_PRI_RESTRICT_NONE;
4150 reg |= (WRR_PRI_DEFAULT << WRR_PRI0_SHIFT |
4151 WRR_PRI_DEFAULT << WRR_PRI1_SHIFT |
4152 WRR_PRI_DEFAULT << WRR_PRI2_SHIFT |
4153 WRR_PRI_DEFAULT << WRR_PRI3_SHIFT);
4154 CSR_WRITE_4(sc, ALC_WRR, reg);
4156 /* Configure Rx free descriptor pre-fetching. */
4157 CSR_WRITE_4(sc, ALC_RX_RD_FREE_THRESH,
4158 ((RX_RD_FREE_THRESH_HI_DEFAULT <<
4159 RX_RD_FREE_THRESH_HI_SHIFT) & RX_RD_FREE_THRESH_HI_MASK) |
4160 ((RX_RD_FREE_THRESH_LO_DEFAULT <<
4161 RX_RD_FREE_THRESH_LO_SHIFT) & RX_RD_FREE_THRESH_LO_MASK));
4165 * Configure flow control parameters.
4166 * XON : 80% of Rx FIFO
4167 * XOFF : 30% of Rx FIFO
4169 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
4170 reg = CSR_READ_4(sc, ALC_SRAM_RX_FIFO_LEN);
4171 reg &= SRAM_RX_FIFO_LEN_MASK;
4174 reg -= RX_FIFO_PAUSE_816X_RSVD;
4176 reg -= RX_BUF_SIZE_MAX;
4178 CSR_WRITE_4(sc, ALC_RX_FIFO_PAUSE_THRESH,
4179 ((reg << RX_FIFO_PAUSE_THRESH_LO_SHIFT) &
4180 RX_FIFO_PAUSE_THRESH_LO_MASK) |
4181 (((RX_FIFO_PAUSE_816X_RSVD / 8) <<
4182 RX_FIFO_PAUSE_THRESH_HI_SHIFT) &
4183 RX_FIFO_PAUSE_THRESH_HI_MASK));
4184 } else if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8131 ||
4185 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8132) {
4186 reg = CSR_READ_4(sc, ALC_SRAM_RX_FIFO_LEN);
4187 rxf_hi = (reg * 8) / 10;
4188 rxf_lo = (reg * 3) / 10;
4189 CSR_WRITE_4(sc, ALC_RX_FIFO_PAUSE_THRESH,
4190 ((rxf_lo << RX_FIFO_PAUSE_THRESH_LO_SHIFT) &
4191 RX_FIFO_PAUSE_THRESH_LO_MASK) |
4192 ((rxf_hi << RX_FIFO_PAUSE_THRESH_HI_SHIFT) &
4193 RX_FIFO_PAUSE_THRESH_HI_MASK));
4196 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
4197 /* Disable RSS until I understand L1C/L2C's RSS logic. */
4198 CSR_WRITE_4(sc, ALC_RSS_IDT_TABLE0, 0);
4199 CSR_WRITE_4(sc, ALC_RSS_CPU, 0);
4202 /* Configure RxQ. */
4203 reg = (RXQ_CFG_RD_BURST_DEFAULT << RXQ_CFG_RD_BURST_SHIFT) &
4204 RXQ_CFG_RD_BURST_MASK;
4205 reg |= RXQ_CFG_RSS_MODE_DIS;
4206 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
4207 reg |= (RXQ_CFG_816X_IDT_TBL_SIZE_DEFAULT <<
4208 RXQ_CFG_816X_IDT_TBL_SIZE_SHIFT) &
4209 RXQ_CFG_816X_IDT_TBL_SIZE_MASK;
4210 if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0)
4211 reg |= RXQ_CFG_ASPM_THROUGHPUT_LIMIT_100M;
4213 if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0 &&
4214 sc->alc_ident->deviceid != DEVICEID_ATHEROS_AR8151_V2)
4215 reg |= RXQ_CFG_ASPM_THROUGHPUT_LIMIT_100M;
4217 CSR_WRITE_4(sc, ALC_RXQ_CFG, reg);
4219 /* Configure DMA parameters. */
4220 reg = DMA_CFG_OUT_ORDER | DMA_CFG_RD_REQ_PRI;
4222 if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0)
4223 reg |= DMA_CFG_CMB_ENB;
4224 if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0)
4225 reg |= DMA_CFG_SMB_ENB;
4227 reg |= DMA_CFG_SMB_DIS;
4228 reg |= (sc->alc_dma_rd_burst & DMA_CFG_RD_BURST_MASK) <<
4229 DMA_CFG_RD_BURST_SHIFT;
4230 reg |= (sc->alc_dma_wr_burst & DMA_CFG_WR_BURST_MASK) <<
4231 DMA_CFG_WR_BURST_SHIFT;
4232 reg |= (DMA_CFG_RD_DELAY_CNT_DEFAULT << DMA_CFG_RD_DELAY_CNT_SHIFT) &
4233 DMA_CFG_RD_DELAY_CNT_MASK;
4234 reg |= (DMA_CFG_WR_DELAY_CNT_DEFAULT << DMA_CFG_WR_DELAY_CNT_SHIFT) &
4235 DMA_CFG_WR_DELAY_CNT_MASK;
4236 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
4237 switch (AR816X_REV(sc->alc_rev)) {
4240 reg |= DMA_CFG_RD_CHNL_SEL_2;
4245 reg |= DMA_CFG_RD_CHNL_SEL_4;
4249 CSR_WRITE_4(sc, ALC_DMA_CFG, reg);
4252 * Configure Tx/Rx MACs.
4253 * - Auto-padding for short frames.
4254 * - Enable CRC generation.
4255 * Actual reconfiguration of MAC for resolved speed/duplex
4256 * is followed after detection of link establishment.
4257 * AR813x/AR815x always does checksum computation regardless
4258 * of MAC_CFG_RXCSUM_ENB bit. Also the controller is known to
4259 * have bug in protocol field in Rx return structure so
4260 * these controllers can't handle fragmented frames. Disable
4261 * Rx checksum offloading until there is a newer controller
4262 * that has sane implementation.
4264 reg = MAC_CFG_TX_CRC_ENB | MAC_CFG_TX_AUTO_PAD | MAC_CFG_FULL_DUPLEX |
4265 ((MAC_CFG_PREAMBLE_DEFAULT << MAC_CFG_PREAMBLE_SHIFT) &
4266 MAC_CFG_PREAMBLE_MASK);
4267 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0 ||
4268 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151 ||
4269 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2 ||
4270 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2)
4271 reg |= MAC_CFG_HASH_ALG_CRC32 | MAC_CFG_SPEED_MODE_SW;
4272 if ((sc->alc_flags & ALC_FLAG_FASTETHER) != 0)
4273 reg |= MAC_CFG_SPEED_10_100;
4275 reg |= MAC_CFG_SPEED_1000;
4276 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
4278 /* Set up the receive filter. */
4282 /* Acknowledge all pending interrupts and clear it. */
4283 CSR_WRITE_4(sc, ALC_INTR_MASK, ALC_INTRS);
4284 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0xFFFFFFFF);
4285 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0);
4287 ifp->if_drv_flags |= IFF_DRV_RUNNING;
4288 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
4290 sc->alc_flags &= ~ALC_FLAG_LINK;
4291 /* Switch to the current media. */
4292 alc_mediachange_locked(sc);
4294 callout_reset(&sc->alc_tick_ch, hz, alc_tick, sc);
4298 alc_stop(struct alc_softc *sc)
4301 struct alc_txdesc *txd;
4302 struct alc_rxdesc *rxd;
4306 ALC_LOCK_ASSERT(sc);
4308 * Mark the interface down and cancel the watchdog timer.
4311 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
4312 sc->alc_flags &= ~ALC_FLAG_LINK;
4313 callout_stop(&sc->alc_tick_ch);
4314 sc->alc_watchdog_timer = 0;
4315 alc_stats_update(sc);
4316 /* Disable interrupts. */
4317 CSR_WRITE_4(sc, ALC_INTR_MASK, 0);
4318 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0xFFFFFFFF);
4320 reg = CSR_READ_4(sc, ALC_DMA_CFG);
4321 reg &= ~(DMA_CFG_CMB_ENB | DMA_CFG_SMB_ENB);
4322 reg |= DMA_CFG_SMB_DIS;
4323 CSR_WRITE_4(sc, ALC_DMA_CFG, reg);
4325 /* Stop Rx/Tx MACs. */
4327 /* Disable interrupts which might be touched in taskq handler. */
4328 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0xFFFFFFFF);
4329 /* Disable L0s/L1s */
4330 alc_aspm(sc, 0, IFM_UNKNOWN);
4331 /* Reclaim Rx buffers that have been processed. */
4332 if (sc->alc_cdata.alc_rxhead != NULL)
4333 m_freem(sc->alc_cdata.alc_rxhead);
4334 ALC_RXCHAIN_RESET(sc);
4336 * Free Tx/Rx mbufs still in the queues.
4338 for (i = 0; i < ALC_RX_RING_CNT; i++) {
4339 rxd = &sc->alc_cdata.alc_rxdesc[i];
4340 if (rxd->rx_m != NULL) {
4341 bus_dmamap_sync(sc->alc_cdata.alc_rx_tag,
4342 rxd->rx_dmamap, BUS_DMASYNC_POSTREAD);
4343 bus_dmamap_unload(sc->alc_cdata.alc_rx_tag,
4349 for (i = 0; i < ALC_TX_RING_CNT; i++) {
4350 txd = &sc->alc_cdata.alc_txdesc[i];
4351 if (txd->tx_m != NULL) {
4352 bus_dmamap_sync(sc->alc_cdata.alc_tx_tag,
4353 txd->tx_dmamap, BUS_DMASYNC_POSTWRITE);
4354 bus_dmamap_unload(sc->alc_cdata.alc_tx_tag,
4363 alc_stop_mac(struct alc_softc *sc)
4369 /* Disable Rx/Tx MAC. */
4370 reg = CSR_READ_4(sc, ALC_MAC_CFG);
4371 if ((reg & (MAC_CFG_TX_ENB | MAC_CFG_RX_ENB)) != 0) {
4372 reg &= ~(MAC_CFG_TX_ENB | MAC_CFG_RX_ENB);
4373 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
4375 for (i = ALC_TIMEOUT; i > 0; i--) {
4376 reg = CSR_READ_4(sc, ALC_IDLE_STATUS);
4377 if ((reg & (IDLE_STATUS_RXMAC | IDLE_STATUS_TXMAC)) == 0)
4382 device_printf(sc->alc_dev,
4383 "could not disable Rx/Tx MAC(0x%08x)!\n", reg);
4387 alc_start_queue(struct alc_softc *sc)
4392 RXQ_CFG_QUEUE0_ENB | RXQ_CFG_QUEUE1_ENB,
4393 RXQ_CFG_QUEUE0_ENB | RXQ_CFG_QUEUE1_ENB | RXQ_CFG_QUEUE2_ENB,
4398 ALC_LOCK_ASSERT(sc);
4401 cfg = CSR_READ_4(sc, ALC_RXQ_CFG);
4402 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
4403 cfg &= ~RXQ_CFG_ENB;
4406 cfg |= RXQ_CFG_QUEUE0_ENB;
4407 CSR_WRITE_4(sc, ALC_RXQ_CFG, cfg);
4409 cfg = CSR_READ_4(sc, ALC_TXQ_CFG);
4411 CSR_WRITE_4(sc, ALC_TXQ_CFG, cfg);
4415 alc_stop_queue(struct alc_softc *sc)
4421 reg = CSR_READ_4(sc, ALC_RXQ_CFG);
4422 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
4423 if ((reg & RXQ_CFG_ENB) != 0) {
4424 reg &= ~RXQ_CFG_ENB;
4425 CSR_WRITE_4(sc, ALC_RXQ_CFG, reg);
4428 if ((reg & RXQ_CFG_QUEUE0_ENB) != 0) {
4429 reg &= ~RXQ_CFG_QUEUE0_ENB;
4430 CSR_WRITE_4(sc, ALC_RXQ_CFG, reg);
4434 reg = CSR_READ_4(sc, ALC_TXQ_CFG);
4435 if ((reg & TXQ_CFG_ENB) != 0) {
4436 reg &= ~TXQ_CFG_ENB;
4437 CSR_WRITE_4(sc, ALC_TXQ_CFG, reg);
4440 for (i = ALC_TIMEOUT; i > 0; i--) {
4441 reg = CSR_READ_4(sc, ALC_IDLE_STATUS);
4442 if ((reg & (IDLE_STATUS_RXQ | IDLE_STATUS_TXQ)) == 0)
4447 device_printf(sc->alc_dev,
4448 "could not disable RxQ/TxQ (0x%08x)!\n", reg);
4452 alc_init_tx_ring(struct alc_softc *sc)
4454 struct alc_ring_data *rd;
4455 struct alc_txdesc *txd;
4458 ALC_LOCK_ASSERT(sc);
4460 sc->alc_cdata.alc_tx_prod = 0;
4461 sc->alc_cdata.alc_tx_cons = 0;
4462 sc->alc_cdata.alc_tx_cnt = 0;
4464 rd = &sc->alc_rdata;
4465 bzero(rd->alc_tx_ring, ALC_TX_RING_SZ);
4466 for (i = 0; i < ALC_TX_RING_CNT; i++) {
4467 txd = &sc->alc_cdata.alc_txdesc[i];
4471 bus_dmamap_sync(sc->alc_cdata.alc_tx_ring_tag,
4472 sc->alc_cdata.alc_tx_ring_map, BUS_DMASYNC_PREWRITE);
4476 alc_init_rx_ring(struct alc_softc *sc)
4478 struct alc_ring_data *rd;
4479 struct alc_rxdesc *rxd;
4482 ALC_LOCK_ASSERT(sc);
4484 sc->alc_cdata.alc_rx_cons = ALC_RX_RING_CNT - 1;
4485 sc->alc_morework = 0;
4486 rd = &sc->alc_rdata;
4487 bzero(rd->alc_rx_ring, ALC_RX_RING_SZ);
4488 for (i = 0; i < ALC_RX_RING_CNT; i++) {
4489 rxd = &sc->alc_cdata.alc_rxdesc[i];
4491 rxd->rx_desc = &rd->alc_rx_ring[i];
4492 if (alc_newbuf(sc, rxd) != 0)
4497 * Since controller does not update Rx descriptors, driver
4498 * does have to read Rx descriptors back so BUS_DMASYNC_PREWRITE
4499 * is enough to ensure coherence.
4501 bus_dmamap_sync(sc->alc_cdata.alc_rx_ring_tag,
4502 sc->alc_cdata.alc_rx_ring_map, BUS_DMASYNC_PREWRITE);
4503 /* Let controller know availability of new Rx buffers. */
4504 CSR_WRITE_4(sc, ALC_MBOX_RD0_PROD_IDX, sc->alc_cdata.alc_rx_cons);
4510 alc_init_rr_ring(struct alc_softc *sc)
4512 struct alc_ring_data *rd;
4514 ALC_LOCK_ASSERT(sc);
4516 sc->alc_cdata.alc_rr_cons = 0;
4517 ALC_RXCHAIN_RESET(sc);
4519 rd = &sc->alc_rdata;
4520 bzero(rd->alc_rr_ring, ALC_RR_RING_SZ);
4521 bus_dmamap_sync(sc->alc_cdata.alc_rr_ring_tag,
4522 sc->alc_cdata.alc_rr_ring_map,
4523 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
4527 alc_init_cmb(struct alc_softc *sc)
4529 struct alc_ring_data *rd;
4531 ALC_LOCK_ASSERT(sc);
4533 rd = &sc->alc_rdata;
4534 bzero(rd->alc_cmb, ALC_CMB_SZ);
4535 bus_dmamap_sync(sc->alc_cdata.alc_cmb_tag, sc->alc_cdata.alc_cmb_map,
4536 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
4540 alc_init_smb(struct alc_softc *sc)
4542 struct alc_ring_data *rd;
4544 ALC_LOCK_ASSERT(sc);
4546 rd = &sc->alc_rdata;
4547 bzero(rd->alc_smb, ALC_SMB_SZ);
4548 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag, sc->alc_cdata.alc_smb_map,
4549 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
4553 alc_rxvlan(struct alc_softc *sc)
4558 ALC_LOCK_ASSERT(sc);
4561 reg = CSR_READ_4(sc, ALC_MAC_CFG);
4562 if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) != 0)
4563 reg |= MAC_CFG_VLAN_TAG_STRIP;
4565 reg &= ~MAC_CFG_VLAN_TAG_STRIP;
4566 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
4570 alc_rxfilter(struct alc_softc *sc)
4573 struct ifmultiaddr *ifma;
4578 ALC_LOCK_ASSERT(sc);
4582 bzero(mchash, sizeof(mchash));
4583 rxcfg = CSR_READ_4(sc, ALC_MAC_CFG);
4584 rxcfg &= ~(MAC_CFG_ALLMULTI | MAC_CFG_BCAST | MAC_CFG_PROMISC);
4585 if ((ifp->if_flags & IFF_BROADCAST) != 0)
4586 rxcfg |= MAC_CFG_BCAST;
4587 if ((ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI)) != 0) {
4588 if ((ifp->if_flags & IFF_PROMISC) != 0)
4589 rxcfg |= MAC_CFG_PROMISC;
4590 if ((ifp->if_flags & IFF_ALLMULTI) != 0)
4591 rxcfg |= MAC_CFG_ALLMULTI;
4592 mchash[0] = 0xFFFFFFFF;
4593 mchash[1] = 0xFFFFFFFF;
4597 if_maddr_rlock(ifp);
4598 TAILQ_FOREACH(ifma, &sc->alc_ifp->if_multiaddrs, ifma_link) {
4599 if (ifma->ifma_addr->sa_family != AF_LINK)
4601 crc = ether_crc32_be(LLADDR((struct sockaddr_dl *)
4602 ifma->ifma_addr), ETHER_ADDR_LEN);
4603 mchash[crc >> 31] |= 1 << ((crc >> 26) & 0x1f);
4605 if_maddr_runlock(ifp);
4608 CSR_WRITE_4(sc, ALC_MAR0, mchash[0]);
4609 CSR_WRITE_4(sc, ALC_MAR1, mchash[1]);
4610 CSR_WRITE_4(sc, ALC_MAC_CFG, rxcfg);
4614 sysctl_int_range(SYSCTL_HANDLER_ARGS, int low, int high)
4620 value = *(int *)arg1;
4621 error = sysctl_handle_int(oidp, &value, 0, req);
4622 if (error || req->newptr == NULL)
4624 if (value < low || value > high)
4626 *(int *)arg1 = value;
4632 sysctl_hw_alc_proc_limit(SYSCTL_HANDLER_ARGS)
4634 return (sysctl_int_range(oidp, arg1, arg2, req,
4635 ALC_PROC_MIN, ALC_PROC_MAX));
4639 sysctl_hw_alc_int_mod(SYSCTL_HANDLER_ARGS)
4642 return (sysctl_int_range(oidp, arg1, arg2, req,
4643 ALC_IM_TIMER_MIN, ALC_IM_TIMER_MAX));