2 * Copyright (c) 2009, Pyun YongHyeon <yongari@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice unmodified, this list of conditions, and the following
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 /* Driver for Atheros AR813x/AR815x PCIe Ethernet. */
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
33 #include <sys/param.h>
34 #include <sys/systm.h>
36 #include <sys/endian.h>
37 #include <sys/kernel.h>
39 #include <sys/malloc.h>
41 #include <sys/module.h>
42 #include <sys/mutex.h>
44 #include <sys/queue.h>
45 #include <sys/socket.h>
46 #include <sys/sockio.h>
47 #include <sys/sysctl.h>
48 #include <sys/taskqueue.h>
52 #include <net/if_var.h>
53 #include <net/if_arp.h>
54 #include <net/ethernet.h>
55 #include <net/if_dl.h>
56 #include <net/if_llc.h>
57 #include <net/if_media.h>
58 #include <net/if_types.h>
59 #include <net/if_vlan_var.h>
61 #include <netinet/in.h>
62 #include <netinet/in_systm.h>
63 #include <netinet/ip.h>
64 #include <netinet/tcp.h>
66 #include <dev/mii/mii.h>
67 #include <dev/mii/miivar.h>
69 #include <dev/pci/pcireg.h>
70 #include <dev/pci/pcivar.h>
72 #include <machine/bus.h>
73 #include <machine/in_cksum.h>
75 #include <dev/alc/if_alcreg.h>
76 #include <dev/alc/if_alcvar.h>
78 /* "device miibus" required. See GENERIC if you get errors here. */
79 #include "miibus_if.h"
80 #undef ALC_USE_CUSTOM_CSUM
82 #ifdef ALC_USE_CUSTOM_CSUM
83 #define ALC_CSUM_FEATURES (CSUM_TCP | CSUM_UDP)
85 #define ALC_CSUM_FEATURES (CSUM_IP | CSUM_TCP | CSUM_UDP)
88 MODULE_DEPEND(alc, pci, 1, 1, 1);
89 MODULE_DEPEND(alc, ether, 1, 1, 1);
90 MODULE_DEPEND(alc, miibus, 1, 1, 1);
93 static int msi_disable = 0;
94 static int msix_disable = 0;
95 TUNABLE_INT("hw.alc.msi_disable", &msi_disable);
96 TUNABLE_INT("hw.alc.msix_disable", &msix_disable);
99 * Devices supported by this driver.
101 static struct alc_ident alc_ident_table[] = {
102 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8131, 9 * 1024,
103 "Atheros AR8131 PCIe Gigabit Ethernet" },
104 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8132, 9 * 1024,
105 "Atheros AR8132 PCIe Fast Ethernet" },
106 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8151, 6 * 1024,
107 "Atheros AR8151 v1.0 PCIe Gigabit Ethernet" },
108 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8151_V2, 6 * 1024,
109 "Atheros AR8151 v2.0 PCIe Gigabit Ethernet" },
110 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8152_B, 6 * 1024,
111 "Atheros AR8152 v1.1 PCIe Fast Ethernet" },
112 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8152_B2, 6 * 1024,
113 "Atheros AR8152 v2.0 PCIe Fast Ethernet" },
114 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8161, 9 * 1024,
115 "Atheros AR8161 PCIe Gigabit Ethernet" },
116 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8162, 9 * 1024,
117 "Atheros AR8162 PCIe Fast Ethernet" },
118 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8171, 9 * 1024,
119 "Atheros AR8171 PCIe Gigabit Ethernet" },
120 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8172, 9 * 1024,
121 "Atheros AR8172 PCIe Fast Ethernet" },
122 { VENDORID_ATHEROS, DEVICEID_ATHEROS_E2200, 9 * 1024,
123 "Killer E2200 Gigabit Ethernet" },
124 { VENDORID_ATHEROS, DEVICEID_ATHEROS_E2400, 9 * 1024,
125 "Killer E2400 Gigabit Ethernet" },
126 { VENDORID_ATHEROS, DEVICEID_ATHEROS_E2500, 9 * 1024,
127 "Killer E2500 Gigabit Ethernet" },
131 static void alc_aspm(struct alc_softc *, int, int);
132 static void alc_aspm_813x(struct alc_softc *, int);
133 static void alc_aspm_816x(struct alc_softc *, int);
134 static int alc_attach(device_t);
135 static int alc_check_boundary(struct alc_softc *);
136 static void alc_config_msi(struct alc_softc *);
137 static int alc_detach(device_t);
138 static void alc_disable_l0s_l1(struct alc_softc *);
139 static int alc_dma_alloc(struct alc_softc *);
140 static void alc_dma_free(struct alc_softc *);
141 static void alc_dmamap_cb(void *, bus_dma_segment_t *, int, int);
142 static void alc_dsp_fixup(struct alc_softc *, int);
143 static int alc_encap(struct alc_softc *, struct mbuf **);
144 static struct alc_ident *
145 alc_find_ident(device_t);
146 #ifndef __NO_STRICT_ALIGNMENT
148 alc_fixup_rx(struct ifnet *, struct mbuf *);
150 static void alc_get_macaddr(struct alc_softc *);
151 static void alc_get_macaddr_813x(struct alc_softc *);
152 static void alc_get_macaddr_816x(struct alc_softc *);
153 static void alc_get_macaddr_par(struct alc_softc *);
154 static void alc_init(void *);
155 static void alc_init_cmb(struct alc_softc *);
156 static void alc_init_locked(struct alc_softc *);
157 static void alc_init_rr_ring(struct alc_softc *);
158 static int alc_init_rx_ring(struct alc_softc *);
159 static void alc_init_smb(struct alc_softc *);
160 static void alc_init_tx_ring(struct alc_softc *);
161 static void alc_int_task(void *, int);
162 static int alc_intr(void *);
163 static int alc_ioctl(struct ifnet *, u_long, caddr_t);
164 static void alc_mac_config(struct alc_softc *);
165 static uint32_t alc_mii_readreg_813x(struct alc_softc *, int, int);
166 static uint32_t alc_mii_readreg_816x(struct alc_softc *, int, int);
167 static uint32_t alc_mii_writereg_813x(struct alc_softc *, int, int, int);
168 static uint32_t alc_mii_writereg_816x(struct alc_softc *, int, int, int);
169 static int alc_miibus_readreg(device_t, int, int);
170 static void alc_miibus_statchg(device_t);
171 static int alc_miibus_writereg(device_t, int, int, int);
172 static uint32_t alc_miidbg_readreg(struct alc_softc *, int);
173 static uint32_t alc_miidbg_writereg(struct alc_softc *, int, int);
174 static uint32_t alc_miiext_readreg(struct alc_softc *, int, int);
175 static uint32_t alc_miiext_writereg(struct alc_softc *, int, int, int);
176 static int alc_mediachange(struct ifnet *);
177 static int alc_mediachange_locked(struct alc_softc *);
178 static void alc_mediastatus(struct ifnet *, struct ifmediareq *);
179 static int alc_newbuf(struct alc_softc *, struct alc_rxdesc *);
180 static void alc_osc_reset(struct alc_softc *);
181 static void alc_phy_down(struct alc_softc *);
182 static void alc_phy_reset(struct alc_softc *);
183 static void alc_phy_reset_813x(struct alc_softc *);
184 static void alc_phy_reset_816x(struct alc_softc *);
185 static int alc_probe(device_t);
186 static void alc_reset(struct alc_softc *);
187 static int alc_resume(device_t);
188 static void alc_rxeof(struct alc_softc *, struct rx_rdesc *);
189 static int alc_rxintr(struct alc_softc *, int);
190 static void alc_rxfilter(struct alc_softc *);
191 static void alc_rxvlan(struct alc_softc *);
192 static void alc_setlinkspeed(struct alc_softc *);
193 static void alc_setwol(struct alc_softc *);
194 static void alc_setwol_813x(struct alc_softc *);
195 static void alc_setwol_816x(struct alc_softc *);
196 static int alc_shutdown(device_t);
197 static void alc_start(struct ifnet *);
198 static void alc_start_locked(struct ifnet *);
199 static void alc_start_queue(struct alc_softc *);
200 static void alc_stats_clear(struct alc_softc *);
201 static void alc_stats_update(struct alc_softc *);
202 static void alc_stop(struct alc_softc *);
203 static void alc_stop_mac(struct alc_softc *);
204 static void alc_stop_queue(struct alc_softc *);
205 static int alc_suspend(device_t);
206 static void alc_sysctl_node(struct alc_softc *);
207 static void alc_tick(void *);
208 static void alc_txeof(struct alc_softc *);
209 static void alc_watchdog(struct alc_softc *);
210 static int sysctl_int_range(SYSCTL_HANDLER_ARGS, int, int);
211 static int sysctl_hw_alc_proc_limit(SYSCTL_HANDLER_ARGS);
212 static int sysctl_hw_alc_int_mod(SYSCTL_HANDLER_ARGS);
214 static device_method_t alc_methods[] = {
215 /* Device interface. */
216 DEVMETHOD(device_probe, alc_probe),
217 DEVMETHOD(device_attach, alc_attach),
218 DEVMETHOD(device_detach, alc_detach),
219 DEVMETHOD(device_shutdown, alc_shutdown),
220 DEVMETHOD(device_suspend, alc_suspend),
221 DEVMETHOD(device_resume, alc_resume),
224 DEVMETHOD(miibus_readreg, alc_miibus_readreg),
225 DEVMETHOD(miibus_writereg, alc_miibus_writereg),
226 DEVMETHOD(miibus_statchg, alc_miibus_statchg),
231 static driver_t alc_driver = {
234 sizeof(struct alc_softc)
237 static devclass_t alc_devclass;
239 DRIVER_MODULE(alc, pci, alc_driver, alc_devclass, 0, 0);
240 DRIVER_MODULE(miibus, alc, miibus_driver, miibus_devclass, 0, 0);
242 static struct resource_spec alc_res_spec_mem[] = {
243 { SYS_RES_MEMORY, PCIR_BAR(0), RF_ACTIVE },
247 static struct resource_spec alc_irq_spec_legacy[] = {
248 { SYS_RES_IRQ, 0, RF_ACTIVE | RF_SHAREABLE },
252 static struct resource_spec alc_irq_spec_msi[] = {
253 { SYS_RES_IRQ, 1, RF_ACTIVE },
257 static struct resource_spec alc_irq_spec_msix[] = {
258 { SYS_RES_IRQ, 1, RF_ACTIVE },
262 static uint32_t alc_dma_burst[] = { 128, 256, 512, 1024, 2048, 4096, 0, 0 };
265 alc_miibus_readreg(device_t dev, int phy, int reg)
267 struct alc_softc *sc;
270 sc = device_get_softc(dev);
271 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
272 v = alc_mii_readreg_816x(sc, phy, reg);
274 v = alc_mii_readreg_813x(sc, phy, reg);
279 alc_mii_readreg_813x(struct alc_softc *sc, int phy, int reg)
285 * For AR8132 fast ethernet controller, do not report 1000baseT
286 * capability to mii(4). Even though AR8132 uses the same
287 * model/revision number of F1 gigabit PHY, the PHY has no
288 * ability to establish 1000baseT link.
290 if ((sc->alc_flags & ALC_FLAG_FASTETHER) != 0 &&
294 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_READ |
295 MDIO_SUP_PREAMBLE | MDIO_CLK_25_4 | MDIO_REG_ADDR(reg));
296 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
298 v = CSR_READ_4(sc, ALC_MDIO);
299 if ((v & (MDIO_OP_EXECUTE | MDIO_OP_BUSY)) == 0)
304 device_printf(sc->alc_dev, "phy read timeout : %d\n", reg);
308 return ((v & MDIO_DATA_MASK) >> MDIO_DATA_SHIFT);
312 alc_mii_readreg_816x(struct alc_softc *sc, int phy, int reg)
317 if ((sc->alc_flags & ALC_FLAG_LINK) != 0)
318 clk = MDIO_CLK_25_128;
321 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_READ |
322 MDIO_SUP_PREAMBLE | clk | MDIO_REG_ADDR(reg));
323 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
325 v = CSR_READ_4(sc, ALC_MDIO);
326 if ((v & MDIO_OP_BUSY) == 0)
331 device_printf(sc->alc_dev, "phy read timeout : %d\n", reg);
335 return ((v & MDIO_DATA_MASK) >> MDIO_DATA_SHIFT);
339 alc_miibus_writereg(device_t dev, int phy, int reg, int val)
341 struct alc_softc *sc;
344 sc = device_get_softc(dev);
345 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
346 v = alc_mii_writereg_816x(sc, phy, reg, val);
348 v = alc_mii_writereg_813x(sc, phy, reg, val);
353 alc_mii_writereg_813x(struct alc_softc *sc, int phy, int reg, int val)
358 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_WRITE |
359 (val & MDIO_DATA_MASK) << MDIO_DATA_SHIFT |
360 MDIO_SUP_PREAMBLE | MDIO_CLK_25_4 | MDIO_REG_ADDR(reg));
361 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
363 v = CSR_READ_4(sc, ALC_MDIO);
364 if ((v & (MDIO_OP_EXECUTE | MDIO_OP_BUSY)) == 0)
369 device_printf(sc->alc_dev, "phy write timeout : %d\n", reg);
375 alc_mii_writereg_816x(struct alc_softc *sc, int phy, int reg, int val)
380 if ((sc->alc_flags & ALC_FLAG_LINK) != 0)
381 clk = MDIO_CLK_25_128;
384 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_WRITE |
385 ((val & MDIO_DATA_MASK) << MDIO_DATA_SHIFT) | MDIO_REG_ADDR(reg) |
386 MDIO_SUP_PREAMBLE | clk);
387 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
389 v = CSR_READ_4(sc, ALC_MDIO);
390 if ((v & MDIO_OP_BUSY) == 0)
395 device_printf(sc->alc_dev, "phy write timeout : %d\n", reg);
401 alc_miibus_statchg(device_t dev)
403 struct alc_softc *sc;
404 struct mii_data *mii;
408 sc = device_get_softc(dev);
410 mii = device_get_softc(sc->alc_miibus);
412 if (mii == NULL || ifp == NULL ||
413 (ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
416 sc->alc_flags &= ~ALC_FLAG_LINK;
417 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) ==
418 (IFM_ACTIVE | IFM_AVALID)) {
419 switch (IFM_SUBTYPE(mii->mii_media_active)) {
422 sc->alc_flags |= ALC_FLAG_LINK;
425 if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0)
426 sc->alc_flags |= ALC_FLAG_LINK;
432 /* Stop Rx/Tx MACs. */
435 /* Program MACs with resolved speed/duplex/flow-control. */
436 if ((sc->alc_flags & ALC_FLAG_LINK) != 0) {
439 /* Re-enable Tx/Rx MACs. */
440 reg = CSR_READ_4(sc, ALC_MAC_CFG);
441 reg |= MAC_CFG_TX_ENB | MAC_CFG_RX_ENB;
442 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
444 alc_aspm(sc, 0, IFM_SUBTYPE(mii->mii_media_active));
445 alc_dsp_fixup(sc, IFM_SUBTYPE(mii->mii_media_active));
449 alc_miidbg_readreg(struct alc_softc *sc, int reg)
452 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_ADDR,
454 return (alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
459 alc_miidbg_writereg(struct alc_softc *sc, int reg, int val)
462 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_ADDR,
464 return (alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
465 ALC_MII_DBG_DATA, val));
469 alc_miiext_readreg(struct alc_softc *sc, int devaddr, int reg)
474 CSR_WRITE_4(sc, ALC_EXT_MDIO, EXT_MDIO_REG(reg) |
475 EXT_MDIO_DEVADDR(devaddr));
476 if ((sc->alc_flags & ALC_FLAG_LINK) != 0)
477 clk = MDIO_CLK_25_128;
480 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_READ |
481 MDIO_SUP_PREAMBLE | clk | MDIO_MODE_EXT);
482 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
484 v = CSR_READ_4(sc, ALC_MDIO);
485 if ((v & MDIO_OP_BUSY) == 0)
490 device_printf(sc->alc_dev, "phy ext read timeout : %d, %d\n",
495 return ((v & MDIO_DATA_MASK) >> MDIO_DATA_SHIFT);
499 alc_miiext_writereg(struct alc_softc *sc, int devaddr, int reg, int val)
504 CSR_WRITE_4(sc, ALC_EXT_MDIO, EXT_MDIO_REG(reg) |
505 EXT_MDIO_DEVADDR(devaddr));
506 if ((sc->alc_flags & ALC_FLAG_LINK) != 0)
507 clk = MDIO_CLK_25_128;
510 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_WRITE |
511 ((val & MDIO_DATA_MASK) << MDIO_DATA_SHIFT) |
512 MDIO_SUP_PREAMBLE | clk | MDIO_MODE_EXT);
513 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
515 v = CSR_READ_4(sc, ALC_MDIO);
516 if ((v & MDIO_OP_BUSY) == 0)
521 device_printf(sc->alc_dev, "phy ext write timeout : %d, %d\n",
528 alc_dsp_fixup(struct alc_softc *sc, int media)
530 uint16_t agc, len, val;
532 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
534 if (AR816X_REV(sc->alc_rev) >= AR816X_REV_C0)
539 * 1000BT/AZ, wrong cable length
541 if ((sc->alc_flags & ALC_FLAG_LINK) != 0) {
542 len = alc_miiext_readreg(sc, MII_EXT_PCS, MII_EXT_CLDCTL6);
543 len = (len >> EXT_CLDCTL6_CAB_LEN_SHIFT) &
544 EXT_CLDCTL6_CAB_LEN_MASK;
545 agc = alc_miidbg_readreg(sc, MII_DBG_AGC);
546 agc = (agc >> DBG_AGC_2_VGA_SHIFT) & DBG_AGC_2_VGA_MASK;
547 if ((media == IFM_1000_T && len > EXT_CLDCTL6_CAB_LEN_SHORT1G &&
548 agc > DBG_AGC_LONG1G_LIMT) ||
549 (media == IFM_100_TX && len > DBG_AGC_LONG100M_LIMT &&
550 agc > DBG_AGC_LONG1G_LIMT)) {
551 alc_miidbg_writereg(sc, MII_DBG_AZ_ANADECT,
552 DBG_AZ_ANADECT_LONG);
553 val = alc_miiext_readreg(sc, MII_EXT_ANEG,
555 val |= ANEG_AFEE_10BT_100M_TH;
556 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_AFE,
559 alc_miidbg_writereg(sc, MII_DBG_AZ_ANADECT,
560 DBG_AZ_ANADECT_DEFAULT);
561 val = alc_miiext_readreg(sc, MII_EXT_ANEG,
563 val &= ~ANEG_AFEE_10BT_100M_TH;
564 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_AFE,
567 if ((sc->alc_flags & ALC_FLAG_LINK_WAR) != 0 &&
568 AR816X_REV(sc->alc_rev) == AR816X_REV_B0) {
569 if (media == IFM_1000_T) {
571 * Giga link threshold, raise the tolerance of
574 val = alc_miidbg_readreg(sc, MII_DBG_MSE20DB);
575 val &= ~DBG_MSE20DB_TH_MASK;
576 val |= (DBG_MSE20DB_TH_HI <<
577 DBG_MSE20DB_TH_SHIFT);
578 alc_miidbg_writereg(sc, MII_DBG_MSE20DB, val);
579 } else if (media == IFM_100_TX)
580 alc_miidbg_writereg(sc, MII_DBG_MSE16DB,
584 val = alc_miiext_readreg(sc, MII_EXT_ANEG, MII_EXT_ANEG_AFE);
585 val &= ~ANEG_AFEE_10BT_100M_TH;
586 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_AFE, val);
587 if ((sc->alc_flags & ALC_FLAG_LINK_WAR) != 0 &&
588 AR816X_REV(sc->alc_rev) == AR816X_REV_B0) {
589 alc_miidbg_writereg(sc, MII_DBG_MSE16DB,
591 val = alc_miidbg_readreg(sc, MII_DBG_MSE20DB);
592 val &= ~DBG_MSE20DB_TH_MASK;
593 val |= (DBG_MSE20DB_TH_DEFAULT << DBG_MSE20DB_TH_SHIFT);
594 alc_miidbg_writereg(sc, MII_DBG_MSE20DB, val);
600 alc_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr)
602 struct alc_softc *sc;
603 struct mii_data *mii;
607 if ((ifp->if_flags & IFF_UP) == 0) {
611 mii = device_get_softc(sc->alc_miibus);
614 ifmr->ifm_status = mii->mii_media_status;
615 ifmr->ifm_active = mii->mii_media_active;
620 alc_mediachange(struct ifnet *ifp)
622 struct alc_softc *sc;
627 error = alc_mediachange_locked(sc);
634 alc_mediachange_locked(struct alc_softc *sc)
636 struct mii_data *mii;
637 struct mii_softc *miisc;
642 mii = device_get_softc(sc->alc_miibus);
643 LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
645 error = mii_mediachg(mii);
650 static struct alc_ident *
651 alc_find_ident(device_t dev)
653 struct alc_ident *ident;
654 uint16_t vendor, devid;
656 vendor = pci_get_vendor(dev);
657 devid = pci_get_device(dev);
658 for (ident = alc_ident_table; ident->name != NULL; ident++) {
659 if (vendor == ident->vendorid && devid == ident->deviceid)
667 alc_probe(device_t dev)
669 struct alc_ident *ident;
671 ident = alc_find_ident(dev);
673 device_set_desc(dev, ident->name);
674 return (BUS_PROBE_DEFAULT);
681 alc_get_macaddr(struct alc_softc *sc)
684 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
685 alc_get_macaddr_816x(sc);
687 alc_get_macaddr_813x(sc);
691 alc_get_macaddr_813x(struct alc_softc *sc)
698 opt = CSR_READ_4(sc, ALC_OPT_CFG);
699 if ((CSR_READ_4(sc, ALC_MASTER_CFG) & MASTER_OTP_SEL) != 0 &&
700 (CSR_READ_4(sc, ALC_TWSI_DEBUG) & TWSI_DEBUG_DEV_EXIST) != 0) {
702 * EEPROM found, let TWSI reload EEPROM configuration.
703 * This will set ethernet address of controller.
706 switch (sc->alc_ident->deviceid) {
707 case DEVICEID_ATHEROS_AR8131:
708 case DEVICEID_ATHEROS_AR8132:
709 if ((opt & OPT_CFG_CLK_ENB) == 0) {
710 opt |= OPT_CFG_CLK_ENB;
711 CSR_WRITE_4(sc, ALC_OPT_CFG, opt);
712 CSR_READ_4(sc, ALC_OPT_CFG);
716 case DEVICEID_ATHEROS_AR8151:
717 case DEVICEID_ATHEROS_AR8151_V2:
718 case DEVICEID_ATHEROS_AR8152_B:
719 case DEVICEID_ATHEROS_AR8152_B2:
720 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
721 ALC_MII_DBG_ADDR, 0x00);
722 val = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
724 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
725 ALC_MII_DBG_DATA, val & 0xFF7F);
726 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
727 ALC_MII_DBG_ADDR, 0x3B);
728 val = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
730 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
731 ALC_MII_DBG_DATA, val | 0x0008);
736 CSR_WRITE_4(sc, ALC_LTSSM_ID_CFG,
737 CSR_READ_4(sc, ALC_LTSSM_ID_CFG) & ~LTSSM_ID_WRO_ENB);
738 CSR_WRITE_4(sc, ALC_WOL_CFG, 0);
739 CSR_READ_4(sc, ALC_WOL_CFG);
741 CSR_WRITE_4(sc, ALC_TWSI_CFG, CSR_READ_4(sc, ALC_TWSI_CFG) |
742 TWSI_CFG_SW_LD_START);
743 for (i = 100; i > 0; i--) {
745 if ((CSR_READ_4(sc, ALC_TWSI_CFG) &
746 TWSI_CFG_SW_LD_START) == 0)
750 device_printf(sc->alc_dev,
751 "reloading EEPROM timeout!\n");
754 device_printf(sc->alc_dev, "EEPROM not found!\n");
757 switch (sc->alc_ident->deviceid) {
758 case DEVICEID_ATHEROS_AR8131:
759 case DEVICEID_ATHEROS_AR8132:
760 if ((opt & OPT_CFG_CLK_ENB) != 0) {
761 opt &= ~OPT_CFG_CLK_ENB;
762 CSR_WRITE_4(sc, ALC_OPT_CFG, opt);
763 CSR_READ_4(sc, ALC_OPT_CFG);
767 case DEVICEID_ATHEROS_AR8151:
768 case DEVICEID_ATHEROS_AR8151_V2:
769 case DEVICEID_ATHEROS_AR8152_B:
770 case DEVICEID_ATHEROS_AR8152_B2:
771 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
772 ALC_MII_DBG_ADDR, 0x00);
773 val = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
775 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
776 ALC_MII_DBG_DATA, val | 0x0080);
777 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
778 ALC_MII_DBG_ADDR, 0x3B);
779 val = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
781 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
782 ALC_MII_DBG_DATA, val & 0xFFF7);
788 alc_get_macaddr_par(sc);
792 alc_get_macaddr_816x(struct alc_softc *sc)
798 /* Try to reload station address via TWSI. */
799 for (i = 100; i > 0; i--) {
800 reg = CSR_READ_4(sc, ALC_SLD);
801 if ((reg & (SLD_PROGRESS | SLD_START)) == 0)
806 CSR_WRITE_4(sc, ALC_SLD, reg | SLD_START);
807 for (i = 100; i > 0; i--) {
809 reg = CSR_READ_4(sc, ALC_SLD);
810 if ((reg & SLD_START) == 0)
815 else if (bootverbose)
816 device_printf(sc->alc_dev,
817 "reloading station address via TWSI timed out!\n");
820 /* Try to reload station address from EEPROM or FLASH. */
822 reg = CSR_READ_4(sc, ALC_EEPROM_LD);
823 if ((reg & (EEPROM_LD_EEPROM_EXIST |
824 EEPROM_LD_FLASH_EXIST)) != 0) {
825 for (i = 100; i > 0; i--) {
826 reg = CSR_READ_4(sc, ALC_EEPROM_LD);
827 if ((reg & (EEPROM_LD_PROGRESS |
828 EEPROM_LD_START)) == 0)
833 CSR_WRITE_4(sc, ALC_EEPROM_LD, reg |
835 for (i = 100; i > 0; i--) {
837 reg = CSR_READ_4(sc, ALC_EEPROM_LD);
838 if ((reg & EEPROM_LD_START) == 0)
841 } else if (bootverbose)
842 device_printf(sc->alc_dev,
843 "reloading EEPROM/FLASH timed out!\n");
847 alc_get_macaddr_par(sc);
851 alc_get_macaddr_par(struct alc_softc *sc)
855 ea[0] = CSR_READ_4(sc, ALC_PAR0);
856 ea[1] = CSR_READ_4(sc, ALC_PAR1);
857 sc->alc_eaddr[0] = (ea[1] >> 8) & 0xFF;
858 sc->alc_eaddr[1] = (ea[1] >> 0) & 0xFF;
859 sc->alc_eaddr[2] = (ea[0] >> 24) & 0xFF;
860 sc->alc_eaddr[3] = (ea[0] >> 16) & 0xFF;
861 sc->alc_eaddr[4] = (ea[0] >> 8) & 0xFF;
862 sc->alc_eaddr[5] = (ea[0] >> 0) & 0xFF;
866 alc_disable_l0s_l1(struct alc_softc *sc)
870 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
871 /* Another magic from vendor. */
872 pmcfg = CSR_READ_4(sc, ALC_PM_CFG);
873 pmcfg &= ~(PM_CFG_L1_ENTRY_TIMER_MASK | PM_CFG_CLK_SWH_L1 |
874 PM_CFG_ASPM_L0S_ENB | PM_CFG_ASPM_L1_ENB |
875 PM_CFG_MAC_ASPM_CHK | PM_CFG_SERDES_PD_EX_L1);
876 pmcfg |= PM_CFG_SERDES_BUDS_RX_L1_ENB |
877 PM_CFG_SERDES_PLL_L1_ENB | PM_CFG_SERDES_L1_ENB;
878 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg);
883 alc_phy_reset(struct alc_softc *sc)
886 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
887 alc_phy_reset_816x(sc);
889 alc_phy_reset_813x(sc);
893 alc_phy_reset_813x(struct alc_softc *sc)
897 /* Reset magic from Linux. */
898 CSR_WRITE_2(sc, ALC_GPHY_CFG, GPHY_CFG_SEL_ANA_RESET);
899 CSR_READ_2(sc, ALC_GPHY_CFG);
902 CSR_WRITE_2(sc, ALC_GPHY_CFG, GPHY_CFG_EXT_RESET |
903 GPHY_CFG_SEL_ANA_RESET);
904 CSR_READ_2(sc, ALC_GPHY_CFG);
907 /* DSP fixup, Vendor magic. */
908 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B) {
909 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
910 ALC_MII_DBG_ADDR, 0x000A);
911 data = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
913 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
914 ALC_MII_DBG_DATA, data & 0xDFFF);
916 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151 ||
917 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2 ||
918 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B ||
919 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2) {
920 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
921 ALC_MII_DBG_ADDR, 0x003B);
922 data = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
924 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
925 ALC_MII_DBG_DATA, data & 0xFFF7);
928 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151) {
929 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
930 ALC_MII_DBG_ADDR, 0x0029);
931 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
932 ALC_MII_DBG_DATA, 0x929D);
934 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8131 ||
935 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8132 ||
936 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2 ||
937 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2) {
938 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
939 ALC_MII_DBG_ADDR, 0x0029);
940 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
941 ALC_MII_DBG_DATA, 0xB6DD);
944 /* Load DSP codes, vendor magic. */
945 data = ANA_LOOP_SEL_10BT | ANA_EN_MASK_TB | ANA_EN_10BT_IDLE |
946 ((1 << ANA_INTERVAL_SEL_TIMER_SHIFT) & ANA_INTERVAL_SEL_TIMER_MASK);
947 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
948 ALC_MII_DBG_ADDR, MII_ANA_CFG18);
949 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
950 ALC_MII_DBG_DATA, data);
952 data = ((2 << ANA_SERDES_CDR_BW_SHIFT) & ANA_SERDES_CDR_BW_MASK) |
953 ANA_SERDES_EN_DEEM | ANA_SERDES_SEL_HSP | ANA_SERDES_EN_PLL |
955 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
956 ALC_MII_DBG_ADDR, MII_ANA_CFG5);
957 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
958 ALC_MII_DBG_DATA, data);
960 data = ((44 << ANA_LONG_CABLE_TH_100_SHIFT) &
961 ANA_LONG_CABLE_TH_100_MASK) |
962 ((33 << ANA_SHORT_CABLE_TH_100_SHIFT) &
963 ANA_SHORT_CABLE_TH_100_SHIFT) |
964 ANA_BP_BAD_LINK_ACCUM | ANA_BP_SMALL_BW;
965 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
966 ALC_MII_DBG_ADDR, MII_ANA_CFG54);
967 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
968 ALC_MII_DBG_DATA, data);
970 data = ((11 << ANA_IECHO_ADJ_3_SHIFT) & ANA_IECHO_ADJ_3_MASK) |
971 ((11 << ANA_IECHO_ADJ_2_SHIFT) & ANA_IECHO_ADJ_2_MASK) |
972 ((8 << ANA_IECHO_ADJ_1_SHIFT) & ANA_IECHO_ADJ_1_MASK) |
973 ((8 << ANA_IECHO_ADJ_0_SHIFT) & ANA_IECHO_ADJ_0_MASK);
974 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
975 ALC_MII_DBG_ADDR, MII_ANA_CFG4);
976 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
977 ALC_MII_DBG_DATA, data);
979 data = ((7 & ANA_MANUL_SWICH_ON_SHIFT) & ANA_MANUL_SWICH_ON_MASK) |
980 ANA_RESTART_CAL | ANA_MAN_ENABLE | ANA_SEL_HSP | ANA_EN_HB |
982 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
983 ALC_MII_DBG_ADDR, MII_ANA_CFG0);
984 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
985 ALC_MII_DBG_DATA, data);
988 /* Disable hibernation. */
989 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_ADDR,
991 data = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
994 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_DATA,
997 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_ADDR,
999 data = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
1002 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_DATA,
1007 alc_phy_reset_816x(struct alc_softc *sc)
1011 val = CSR_READ_4(sc, ALC_GPHY_CFG);
1012 val &= ~(GPHY_CFG_EXT_RESET | GPHY_CFG_LED_MODE |
1013 GPHY_CFG_GATE_25M_ENB | GPHY_CFG_PHY_IDDQ | GPHY_CFG_PHY_PLL_ON |
1014 GPHY_CFG_PWDOWN_HW | GPHY_CFG_100AB_ENB);
1015 val |= GPHY_CFG_SEL_ANA_RESET;
1017 val |= GPHY_CFG_HIB_PULSE | GPHY_CFG_HIB_EN | GPHY_CFG_SEL_ANA_RESET;
1019 /* Disable PHY hibernation. */
1020 val &= ~(GPHY_CFG_HIB_PULSE | GPHY_CFG_HIB_EN);
1022 CSR_WRITE_4(sc, ALC_GPHY_CFG, val);
1024 CSR_WRITE_4(sc, ALC_GPHY_CFG, val | GPHY_CFG_EXT_RESET);
1027 /* Vendor PHY magic. */
1029 alc_miidbg_writereg(sc, MII_DBG_LEGCYPS, DBG_LEGCYPS_DEFAULT);
1030 alc_miidbg_writereg(sc, MII_DBG_SYSMODCTL, DBG_SYSMODCTL_DEFAULT);
1031 alc_miiext_writereg(sc, MII_EXT_PCS, MII_EXT_VDRVBIAS,
1032 EXT_VDRVBIAS_DEFAULT);
1034 /* Disable PHY hibernation. */
1035 alc_miidbg_writereg(sc, MII_DBG_LEGCYPS,
1036 DBG_LEGCYPS_DEFAULT & ~DBG_LEGCYPS_ENB);
1037 alc_miidbg_writereg(sc, MII_DBG_HIBNEG,
1038 DBG_HIBNEG_DEFAULT & ~(DBG_HIBNEG_PSHIB_EN | DBG_HIBNEG_HIB_PULSE));
1039 alc_miidbg_writereg(sc, MII_DBG_GREENCFG, DBG_GREENCFG_DEFAULT);
1042 /* XXX Disable EEE. */
1043 val = CSR_READ_4(sc, ALC_LPI_CTL);
1044 val &= ~LPI_CTL_ENB;
1045 CSR_WRITE_4(sc, ALC_LPI_CTL, val);
1046 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_LOCAL_EEEADV, 0);
1048 /* PHY power saving. */
1049 alc_miidbg_writereg(sc, MII_DBG_TST10BTCFG, DBG_TST10BTCFG_DEFAULT);
1050 alc_miidbg_writereg(sc, MII_DBG_SRDSYSMOD, DBG_SRDSYSMOD_DEFAULT);
1051 alc_miidbg_writereg(sc, MII_DBG_TST100BTCFG, DBG_TST100BTCFG_DEFAULT);
1052 alc_miidbg_writereg(sc, MII_DBG_ANACTL, DBG_ANACTL_DEFAULT);
1053 val = alc_miidbg_readreg(sc, MII_DBG_GREENCFG2);
1054 val &= ~DBG_GREENCFG2_GATE_DFSE_EN;
1055 alc_miidbg_writereg(sc, MII_DBG_GREENCFG2, val);
1057 /* RTL8139C, 120m issue. */
1058 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_NLP78,
1059 ANEG_NLP78_120M_DEFAULT);
1060 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_S3DIG10,
1061 ANEG_S3DIG10_DEFAULT);
1063 if ((sc->alc_flags & ALC_FLAG_LINK_WAR) != 0) {
1064 /* Turn off half amplitude. */
1065 val = alc_miiext_readreg(sc, MII_EXT_PCS, MII_EXT_CLDCTL3);
1066 val |= EXT_CLDCTL3_BP_CABLE1TH_DET_GT;
1067 alc_miiext_writereg(sc, MII_EXT_PCS, MII_EXT_CLDCTL3, val);
1068 /* Turn off Green feature. */
1069 val = alc_miidbg_readreg(sc, MII_DBG_GREENCFG2);
1070 val |= DBG_GREENCFG2_BP_GREEN;
1071 alc_miidbg_writereg(sc, MII_DBG_GREENCFG2, val);
1072 /* Turn off half bias. */
1073 val = alc_miiext_readreg(sc, MII_EXT_PCS, MII_EXT_CLDCTL5);
1074 val |= EXT_CLDCTL5_BP_VD_HLFBIAS;
1075 alc_miiext_writereg(sc, MII_EXT_PCS, MII_EXT_CLDCTL5, val);
1080 alc_phy_down(struct alc_softc *sc)
1084 switch (sc->alc_ident->deviceid) {
1085 case DEVICEID_ATHEROS_AR8161:
1086 case DEVICEID_ATHEROS_E2200:
1087 case DEVICEID_ATHEROS_E2400:
1088 case DEVICEID_ATHEROS_E2500:
1089 case DEVICEID_ATHEROS_AR8162:
1090 case DEVICEID_ATHEROS_AR8171:
1091 case DEVICEID_ATHEROS_AR8172:
1092 gphy = CSR_READ_4(sc, ALC_GPHY_CFG);
1093 gphy &= ~(GPHY_CFG_EXT_RESET | GPHY_CFG_LED_MODE |
1094 GPHY_CFG_100AB_ENB | GPHY_CFG_PHY_PLL_ON);
1095 gphy |= GPHY_CFG_HIB_EN | GPHY_CFG_HIB_PULSE |
1096 GPHY_CFG_SEL_ANA_RESET;
1097 gphy |= GPHY_CFG_PHY_IDDQ | GPHY_CFG_PWDOWN_HW;
1098 CSR_WRITE_4(sc, ALC_GPHY_CFG, gphy);
1100 case DEVICEID_ATHEROS_AR8151:
1101 case DEVICEID_ATHEROS_AR8151_V2:
1102 case DEVICEID_ATHEROS_AR8152_B:
1103 case DEVICEID_ATHEROS_AR8152_B2:
1105 * GPHY power down caused more problems on AR8151 v2.0.
1106 * When driver is reloaded after GPHY power down,
1107 * accesses to PHY/MAC registers hung the system. Only
1108 * cold boot recovered from it. I'm not sure whether
1109 * AR8151 v1.0 also requires this one though. I don't
1110 * have AR8151 v1.0 controller in hand.
1111 * The only option left is to isolate the PHY and
1112 * initiates power down the PHY which in turn saves
1113 * more power when driver is unloaded.
1115 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
1116 MII_BMCR, BMCR_ISO | BMCR_PDOWN);
1119 /* Force PHY down. */
1120 CSR_WRITE_2(sc, ALC_GPHY_CFG, GPHY_CFG_EXT_RESET |
1121 GPHY_CFG_SEL_ANA_RESET | GPHY_CFG_PHY_IDDQ |
1122 GPHY_CFG_PWDOWN_HW);
1129 alc_aspm(struct alc_softc *sc, int init, int media)
1132 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
1133 alc_aspm_816x(sc, init);
1135 alc_aspm_813x(sc, media);
1139 alc_aspm_813x(struct alc_softc *sc, int media)
1144 if ((sc->alc_flags & ALC_FLAG_LINK) == 0)
1147 pmcfg = CSR_READ_4(sc, ALC_PM_CFG);
1148 if ((sc->alc_flags & (ALC_FLAG_APS | ALC_FLAG_PCIE)) ==
1149 (ALC_FLAG_APS | ALC_FLAG_PCIE))
1150 linkcfg = CSR_READ_2(sc, sc->alc_expcap +
1154 pmcfg &= ~PM_CFG_SERDES_PD_EX_L1;
1155 pmcfg &= ~(PM_CFG_L1_ENTRY_TIMER_MASK | PM_CFG_LCKDET_TIMER_MASK);
1156 pmcfg |= PM_CFG_MAC_ASPM_CHK;
1157 pmcfg |= (PM_CFG_LCKDET_TIMER_DEFAULT << PM_CFG_LCKDET_TIMER_SHIFT);
1158 pmcfg &= ~(PM_CFG_ASPM_L1_ENB | PM_CFG_ASPM_L0S_ENB);
1160 if ((sc->alc_flags & ALC_FLAG_APS) != 0) {
1161 /* Disable extended sync except AR8152 B v1.0 */
1162 linkcfg &= ~PCIEM_LINK_CTL_EXTENDED_SYNC;
1163 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B &&
1164 sc->alc_rev == ATHEROS_AR8152_B_V10)
1165 linkcfg |= PCIEM_LINK_CTL_EXTENDED_SYNC;
1166 CSR_WRITE_2(sc, sc->alc_expcap + PCIER_LINK_CTL,
1168 pmcfg &= ~(PM_CFG_EN_BUFS_RX_L0S | PM_CFG_SA_DLY_ENB |
1170 pmcfg |= (PM_CFG_L1_ENTRY_TIMER_DEFAULT <<
1171 PM_CFG_L1_ENTRY_TIMER_SHIFT);
1172 pmcfg &= ~PM_CFG_PM_REQ_TIMER_MASK;
1173 pmcfg |= (PM_CFG_PM_REQ_TIMER_DEFAULT <<
1174 PM_CFG_PM_REQ_TIMER_SHIFT);
1175 pmcfg |= PM_CFG_SERDES_PD_EX_L1 | PM_CFG_PCIE_RECV;
1178 if ((sc->alc_flags & ALC_FLAG_LINK) != 0) {
1179 if ((sc->alc_flags & ALC_FLAG_L0S) != 0)
1180 pmcfg |= PM_CFG_ASPM_L0S_ENB;
1181 if ((sc->alc_flags & ALC_FLAG_L1S) != 0)
1182 pmcfg |= PM_CFG_ASPM_L1_ENB;
1183 if ((sc->alc_flags & ALC_FLAG_APS) != 0) {
1184 if (sc->alc_ident->deviceid ==
1185 DEVICEID_ATHEROS_AR8152_B)
1186 pmcfg &= ~PM_CFG_ASPM_L0S_ENB;
1187 pmcfg &= ~(PM_CFG_SERDES_L1_ENB |
1188 PM_CFG_SERDES_PLL_L1_ENB |
1189 PM_CFG_SERDES_BUDS_RX_L1_ENB);
1190 pmcfg |= PM_CFG_CLK_SWH_L1;
1191 if (media == IFM_100_TX || media == IFM_1000_T) {
1192 pmcfg &= ~PM_CFG_L1_ENTRY_TIMER_MASK;
1193 switch (sc->alc_ident->deviceid) {
1194 case DEVICEID_ATHEROS_AR8152_B:
1196 PM_CFG_L1_ENTRY_TIMER_SHIFT);
1198 case DEVICEID_ATHEROS_AR8152_B2:
1199 case DEVICEID_ATHEROS_AR8151_V2:
1201 PM_CFG_L1_ENTRY_TIMER_SHIFT);
1205 PM_CFG_L1_ENTRY_TIMER_SHIFT);
1210 pmcfg |= PM_CFG_SERDES_L1_ENB |
1211 PM_CFG_SERDES_PLL_L1_ENB |
1212 PM_CFG_SERDES_BUDS_RX_L1_ENB;
1213 pmcfg &= ~(PM_CFG_CLK_SWH_L1 |
1214 PM_CFG_ASPM_L1_ENB | PM_CFG_ASPM_L0S_ENB);
1217 pmcfg &= ~(PM_CFG_SERDES_BUDS_RX_L1_ENB | PM_CFG_SERDES_L1_ENB |
1218 PM_CFG_SERDES_PLL_L1_ENB);
1219 pmcfg |= PM_CFG_CLK_SWH_L1;
1220 if ((sc->alc_flags & ALC_FLAG_L1S) != 0)
1221 pmcfg |= PM_CFG_ASPM_L1_ENB;
1223 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg);
1227 alc_aspm_816x(struct alc_softc *sc, int init)
1231 pmcfg = CSR_READ_4(sc, ALC_PM_CFG);
1232 pmcfg &= ~PM_CFG_L1_ENTRY_TIMER_816X_MASK;
1233 pmcfg |= PM_CFG_L1_ENTRY_TIMER_816X_DEFAULT;
1234 pmcfg &= ~PM_CFG_PM_REQ_TIMER_MASK;
1235 pmcfg |= PM_CFG_PM_REQ_TIMER_816X_DEFAULT;
1236 pmcfg &= ~PM_CFG_LCKDET_TIMER_MASK;
1237 pmcfg |= PM_CFG_LCKDET_TIMER_DEFAULT;
1238 pmcfg |= PM_CFG_SERDES_PD_EX_L1 | PM_CFG_CLK_SWH_L1 | PM_CFG_PCIE_RECV;
1239 pmcfg &= ~(PM_CFG_RX_L1_AFTER_L0S | PM_CFG_TX_L1_AFTER_L0S |
1240 PM_CFG_ASPM_L1_ENB | PM_CFG_ASPM_L0S_ENB |
1241 PM_CFG_SERDES_L1_ENB | PM_CFG_SERDES_PLL_L1_ENB |
1242 PM_CFG_SERDES_BUDS_RX_L1_ENB | PM_CFG_SA_DLY_ENB |
1243 PM_CFG_MAC_ASPM_CHK | PM_CFG_HOTRST);
1244 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1 &&
1245 (sc->alc_rev & 0x01) != 0)
1246 pmcfg |= PM_CFG_SERDES_L1_ENB | PM_CFG_SERDES_PLL_L1_ENB;
1247 if ((sc->alc_flags & ALC_FLAG_LINK) != 0) {
1248 /* Link up, enable both L0s, L1s. */
1249 pmcfg |= PM_CFG_ASPM_L0S_ENB | PM_CFG_ASPM_L1_ENB |
1250 PM_CFG_MAC_ASPM_CHK;
1253 pmcfg |= PM_CFG_ASPM_L0S_ENB | PM_CFG_ASPM_L1_ENB |
1254 PM_CFG_MAC_ASPM_CHK;
1255 else if ((sc->alc_ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
1256 pmcfg |= PM_CFG_ASPM_L1_ENB | PM_CFG_MAC_ASPM_CHK;
1258 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg);
1262 alc_init_pcie(struct alc_softc *sc)
1264 const char *aspm_state[] = { "L0s/L1", "L0s", "L1", "L0s/L1" };
1265 uint32_t cap, ctl, val;
1268 /* Clear data link and flow-control protocol error. */
1269 val = CSR_READ_4(sc, ALC_PEX_UNC_ERR_SEV);
1270 val &= ~(PEX_UNC_ERR_SEV_DLP | PEX_UNC_ERR_SEV_FCP);
1271 CSR_WRITE_4(sc, ALC_PEX_UNC_ERR_SEV, val);
1273 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
1274 CSR_WRITE_4(sc, ALC_LTSSM_ID_CFG,
1275 CSR_READ_4(sc, ALC_LTSSM_ID_CFG) & ~LTSSM_ID_WRO_ENB);
1276 CSR_WRITE_4(sc, ALC_PCIE_PHYMISC,
1277 CSR_READ_4(sc, ALC_PCIE_PHYMISC) |
1278 PCIE_PHYMISC_FORCE_RCV_DET);
1279 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B &&
1280 sc->alc_rev == ATHEROS_AR8152_B_V10) {
1281 val = CSR_READ_4(sc, ALC_PCIE_PHYMISC2);
1282 val &= ~(PCIE_PHYMISC2_SERDES_CDR_MASK |
1283 PCIE_PHYMISC2_SERDES_TH_MASK);
1284 val |= 3 << PCIE_PHYMISC2_SERDES_CDR_SHIFT;
1285 val |= 3 << PCIE_PHYMISC2_SERDES_TH_SHIFT;
1286 CSR_WRITE_4(sc, ALC_PCIE_PHYMISC2, val);
1288 /* Disable ASPM L0S and L1. */
1289 cap = CSR_READ_2(sc, sc->alc_expcap + PCIER_LINK_CAP);
1290 if ((cap & PCIEM_LINK_CAP_ASPM) != 0) {
1291 ctl = CSR_READ_2(sc, sc->alc_expcap + PCIER_LINK_CTL);
1292 if ((ctl & PCIEM_LINK_CTL_RCB) != 0)
1293 sc->alc_rcb = DMA_CFG_RCB_128;
1295 device_printf(sc->alc_dev, "RCB %u bytes\n",
1296 sc->alc_rcb == DMA_CFG_RCB_64 ? 64 : 128);
1297 state = ctl & PCIEM_LINK_CTL_ASPMC;
1298 if (state & PCIEM_LINK_CTL_ASPMC_L0S)
1299 sc->alc_flags |= ALC_FLAG_L0S;
1300 if (state & PCIEM_LINK_CTL_ASPMC_L1)
1301 sc->alc_flags |= ALC_FLAG_L1S;
1303 device_printf(sc->alc_dev, "ASPM %s %s\n",
1305 state == 0 ? "disabled" : "enabled");
1306 alc_disable_l0s_l1(sc);
1309 device_printf(sc->alc_dev,
1310 "no ASPM support\n");
1313 val = CSR_READ_4(sc, ALC_PDLL_TRNS1);
1314 val &= ~PDLL_TRNS1_D3PLLOFF_ENB;
1315 CSR_WRITE_4(sc, ALC_PDLL_TRNS1, val);
1316 val = CSR_READ_4(sc, ALC_MASTER_CFG);
1317 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1 &&
1318 (sc->alc_rev & 0x01) != 0) {
1319 if ((val & MASTER_WAKEN_25M) == 0 ||
1320 (val & MASTER_CLK_SEL_DIS) == 0) {
1321 val |= MASTER_WAKEN_25M | MASTER_CLK_SEL_DIS;
1322 CSR_WRITE_4(sc, ALC_MASTER_CFG, val);
1325 if ((val & MASTER_WAKEN_25M) == 0 ||
1326 (val & MASTER_CLK_SEL_DIS) != 0) {
1327 val |= MASTER_WAKEN_25M;
1328 val &= ~MASTER_CLK_SEL_DIS;
1329 CSR_WRITE_4(sc, ALC_MASTER_CFG, val);
1333 alc_aspm(sc, 1, IFM_UNKNOWN);
1337 alc_config_msi(struct alc_softc *sc)
1341 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
1343 * It seems interrupt moderation is controlled by
1344 * ALC_MSI_RETRANS_TIMER register if MSI/MSIX is active.
1345 * Driver uses RX interrupt moderation parameter to
1346 * program ALC_MSI_RETRANS_TIMER register.
1348 ctl = CSR_READ_4(sc, ALC_MSI_RETRANS_TIMER);
1349 ctl &= ~MSI_RETRANS_TIMER_MASK;
1350 ctl &= ~MSI_RETRANS_MASK_SEL_LINE;
1351 mod = ALC_USECS(sc->alc_int_rx_mod);
1355 if ((sc->alc_flags & ALC_FLAG_MSIX) != 0)
1356 CSR_WRITE_4(sc, ALC_MSI_RETRANS_TIMER, ctl |
1357 MSI_RETRANS_MASK_SEL_STD);
1358 else if ((sc->alc_flags & ALC_FLAG_MSI) != 0)
1359 CSR_WRITE_4(sc, ALC_MSI_RETRANS_TIMER, ctl |
1360 MSI_RETRANS_MASK_SEL_LINE);
1362 CSR_WRITE_4(sc, ALC_MSI_RETRANS_TIMER, 0);
1367 alc_attach(device_t dev)
1369 struct alc_softc *sc;
1371 int base, error, i, msic, msixc;
1375 sc = device_get_softc(dev);
1377 sc->alc_rev = pci_get_revid(dev);
1379 mtx_init(&sc->alc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
1381 callout_init_mtx(&sc->alc_tick_ch, &sc->alc_mtx, 0);
1382 TASK_INIT(&sc->alc_int_task, 0, alc_int_task, sc);
1383 sc->alc_ident = alc_find_ident(dev);
1385 /* Map the device. */
1386 pci_enable_busmaster(dev);
1387 sc->alc_res_spec = alc_res_spec_mem;
1388 sc->alc_irq_spec = alc_irq_spec_legacy;
1389 error = bus_alloc_resources(dev, sc->alc_res_spec, sc->alc_res);
1391 device_printf(dev, "cannot allocate memory resources.\n");
1395 /* Set PHY address. */
1396 sc->alc_phyaddr = ALC_PHY_ADDR;
1399 * One odd thing is AR8132 uses the same PHY hardware(F1
1400 * gigabit PHY) of AR8131. So atphy(4) of AR8132 reports
1401 * the PHY supports 1000Mbps but that's not true. The PHY
1402 * used in AR8132 can't establish gigabit link even if it
1403 * shows the same PHY model/revision number of AR8131.
1405 switch (sc->alc_ident->deviceid) {
1406 case DEVICEID_ATHEROS_E2200:
1407 case DEVICEID_ATHEROS_E2400:
1408 case DEVICEID_ATHEROS_E2500:
1409 sc->alc_flags |= ALC_FLAG_E2X00;
1411 case DEVICEID_ATHEROS_AR8161:
1412 if (pci_get_subvendor(dev) == VENDORID_ATHEROS &&
1413 pci_get_subdevice(dev) == 0x0091 && sc->alc_rev == 0)
1414 sc->alc_flags |= ALC_FLAG_LINK_WAR;
1416 case DEVICEID_ATHEROS_AR8171:
1417 sc->alc_flags |= ALC_FLAG_AR816X_FAMILY;
1419 case DEVICEID_ATHEROS_AR8162:
1420 case DEVICEID_ATHEROS_AR8172:
1421 sc->alc_flags |= ALC_FLAG_FASTETHER | ALC_FLAG_AR816X_FAMILY;
1423 case DEVICEID_ATHEROS_AR8152_B:
1424 case DEVICEID_ATHEROS_AR8152_B2:
1425 sc->alc_flags |= ALC_FLAG_APS;
1427 case DEVICEID_ATHEROS_AR8132:
1428 sc->alc_flags |= ALC_FLAG_FASTETHER;
1430 case DEVICEID_ATHEROS_AR8151:
1431 case DEVICEID_ATHEROS_AR8151_V2:
1432 sc->alc_flags |= ALC_FLAG_APS;
1437 sc->alc_flags |= ALC_FLAG_JUMBO;
1440 * It seems that AR813x/AR815x has silicon bug for SMB. In
1441 * addition, Atheros said that enabling SMB wouldn't improve
1442 * performance. However I think it's bad to access lots of
1443 * registers to extract MAC statistics.
1445 sc->alc_flags |= ALC_FLAG_SMB_BUG;
1447 * Don't use Tx CMB. It is known to have silicon bug.
1449 sc->alc_flags |= ALC_FLAG_CMB_BUG;
1450 sc->alc_chip_rev = CSR_READ_4(sc, ALC_MASTER_CFG) >>
1451 MASTER_CHIP_REV_SHIFT;
1453 device_printf(dev, "PCI device revision : 0x%04x\n",
1455 device_printf(dev, "Chip id/revision : 0x%04x\n",
1457 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
1458 device_printf(dev, "AR816x revision : 0x%x\n",
1459 AR816X_REV(sc->alc_rev));
1461 device_printf(dev, "%u Tx FIFO, %u Rx FIFO\n",
1462 CSR_READ_4(sc, ALC_SRAM_TX_FIFO_LEN) * 8,
1463 CSR_READ_4(sc, ALC_SRAM_RX_FIFO_LEN) * 8);
1465 /* Initialize DMA parameters. */
1466 sc->alc_dma_rd_burst = 0;
1467 sc->alc_dma_wr_burst = 0;
1468 sc->alc_rcb = DMA_CFG_RCB_64;
1469 if (pci_find_cap(dev, PCIY_EXPRESS, &base) == 0) {
1470 sc->alc_flags |= ALC_FLAG_PCIE;
1471 sc->alc_expcap = base;
1472 burst = CSR_READ_2(sc, base + PCIER_DEVICE_CTL);
1473 sc->alc_dma_rd_burst =
1474 (burst & PCIEM_CTL_MAX_READ_REQUEST) >> 12;
1475 sc->alc_dma_wr_burst = (burst & PCIEM_CTL_MAX_PAYLOAD) >> 5;
1477 device_printf(dev, "Read request size : %u bytes.\n",
1478 alc_dma_burst[sc->alc_dma_rd_burst]);
1479 device_printf(dev, "TLP payload size : %u bytes.\n",
1480 alc_dma_burst[sc->alc_dma_wr_burst]);
1482 if (alc_dma_burst[sc->alc_dma_rd_burst] > 1024)
1483 sc->alc_dma_rd_burst = 3;
1484 if (alc_dma_burst[sc->alc_dma_wr_burst] > 1024)
1485 sc->alc_dma_wr_burst = 3;
1487 * Force maximum payload size to 128 bytes for
1488 * E2200/E2400/E2500.
1489 * Otherwise it triggers DMA write error.
1491 if ((sc->alc_flags & ALC_FLAG_E2X00) != 0)
1492 sc->alc_dma_wr_burst = 0;
1499 /* Reset the ethernet controller. */
1503 /* Allocate IRQ resources. */
1504 msixc = pci_msix_count(dev);
1505 msic = pci_msi_count(dev);
1507 device_printf(dev, "MSIX count : %d\n", msixc);
1508 device_printf(dev, "MSI count : %d\n", msic);
1515 * Prefer MSIX over MSI.
1516 * AR816x controller has a silicon bug that MSI interrupt
1517 * does not assert if PCIM_CMD_INTxDIS bit of command
1518 * register is set. pci(4) was taught to handle that case.
1520 if (msix_disable == 0 || msi_disable == 0) {
1521 if (msix_disable == 0 && msixc > 0 &&
1522 pci_alloc_msix(dev, &msixc) == 0) {
1525 "Using %d MSIX message(s).\n", msixc);
1526 sc->alc_flags |= ALC_FLAG_MSIX;
1527 sc->alc_irq_spec = alc_irq_spec_msix;
1529 pci_release_msi(dev);
1531 if (msi_disable == 0 && (sc->alc_flags & ALC_FLAG_MSIX) == 0 &&
1532 msic > 0 && pci_alloc_msi(dev, &msic) == 0) {
1535 "Using %d MSI message(s).\n", msic);
1536 sc->alc_flags |= ALC_FLAG_MSI;
1537 sc->alc_irq_spec = alc_irq_spec_msi;
1539 pci_release_msi(dev);
1543 error = bus_alloc_resources(dev, sc->alc_irq_spec, sc->alc_irq);
1545 device_printf(dev, "cannot allocate IRQ resources.\n");
1549 /* Create device sysctl node. */
1550 alc_sysctl_node(sc);
1552 if ((error = alc_dma_alloc(sc)) != 0)
1555 /* Load station address. */
1556 alc_get_macaddr(sc);
1558 ifp = sc->alc_ifp = if_alloc(IFT_ETHER);
1560 device_printf(dev, "cannot allocate ifnet structure.\n");
1566 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
1567 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
1568 ifp->if_ioctl = alc_ioctl;
1569 ifp->if_start = alc_start;
1570 ifp->if_init = alc_init;
1571 ifp->if_snd.ifq_drv_maxlen = ALC_TX_RING_CNT - 1;
1572 IFQ_SET_MAXLEN(&ifp->if_snd, ifp->if_snd.ifq_drv_maxlen);
1573 IFQ_SET_READY(&ifp->if_snd);
1574 ifp->if_capabilities = IFCAP_TXCSUM | IFCAP_TSO4;
1575 ifp->if_hwassist = ALC_CSUM_FEATURES | CSUM_TSO;
1576 if (pci_find_cap(dev, PCIY_PMG, &base) == 0) {
1577 ifp->if_capabilities |= IFCAP_WOL_MAGIC | IFCAP_WOL_MCAST;
1578 sc->alc_flags |= ALC_FLAG_PM;
1579 sc->alc_pmcap = base;
1581 ifp->if_capenable = ifp->if_capabilities;
1583 /* Set up MII bus. */
1584 error = mii_attach(dev, &sc->alc_miibus, ifp, alc_mediachange,
1585 alc_mediastatus, BMSR_DEFCAPMASK, sc->alc_phyaddr, MII_OFFSET_ANY,
1588 device_printf(dev, "attaching PHYs failed\n");
1592 ether_ifattach(ifp, sc->alc_eaddr);
1594 /* VLAN capability setup. */
1595 ifp->if_capabilities |= IFCAP_VLAN_MTU | IFCAP_VLAN_HWTAGGING |
1596 IFCAP_VLAN_HWCSUM | IFCAP_VLAN_HWTSO;
1597 ifp->if_capenable = ifp->if_capabilities;
1600 * It seems enabling Tx checksum offloading makes more trouble.
1601 * Sometimes the controller does not receive any frames when
1602 * Tx checksum offloading is enabled. I'm not sure whether this
1603 * is a bug in Tx checksum offloading logic or I got broken
1604 * sample boards. To safety, don't enable Tx checksum offloading
1605 * by default but give chance to users to toggle it if they know
1606 * their controllers work without problems.
1607 * Fortunately, Tx checksum offloading for AR816x family
1610 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
1611 ifp->if_capenable &= ~IFCAP_TXCSUM;
1612 ifp->if_hwassist &= ~ALC_CSUM_FEATURES;
1615 /* Tell the upper layer(s) we support long frames. */
1616 ifp->if_hdrlen = sizeof(struct ether_vlan_header);
1618 /* Create local taskq. */
1619 sc->alc_tq = taskqueue_create_fast("alc_taskq", M_WAITOK,
1620 taskqueue_thread_enqueue, &sc->alc_tq);
1621 if (sc->alc_tq == NULL) {
1622 device_printf(dev, "could not create taskqueue.\n");
1623 ether_ifdetach(ifp);
1627 taskqueue_start_threads(&sc->alc_tq, 1, PI_NET, "%s taskq",
1628 device_get_nameunit(sc->alc_dev));
1631 if ((sc->alc_flags & ALC_FLAG_MSIX) != 0)
1632 msic = ALC_MSIX_MESSAGES;
1633 else if ((sc->alc_flags & ALC_FLAG_MSI) != 0)
1634 msic = ALC_MSI_MESSAGES;
1637 for (i = 0; i < msic; i++) {
1638 error = bus_setup_intr(dev, sc->alc_irq[i],
1639 INTR_TYPE_NET | INTR_MPSAFE, alc_intr, NULL, sc,
1640 &sc->alc_intrhand[i]);
1645 device_printf(dev, "could not set up interrupt handler.\n");
1646 taskqueue_free(sc->alc_tq);
1648 ether_ifdetach(ifp);
1660 alc_detach(device_t dev)
1662 struct alc_softc *sc;
1666 sc = device_get_softc(dev);
1669 if (device_is_attached(dev)) {
1670 ether_ifdetach(ifp);
1674 callout_drain(&sc->alc_tick_ch);
1675 taskqueue_drain(sc->alc_tq, &sc->alc_int_task);
1678 if (sc->alc_tq != NULL) {
1679 taskqueue_drain(sc->alc_tq, &sc->alc_int_task);
1680 taskqueue_free(sc->alc_tq);
1684 if (sc->alc_miibus != NULL) {
1685 device_delete_child(dev, sc->alc_miibus);
1686 sc->alc_miibus = NULL;
1688 bus_generic_detach(dev);
1696 if ((sc->alc_flags & ALC_FLAG_MSIX) != 0)
1697 msic = ALC_MSIX_MESSAGES;
1698 else if ((sc->alc_flags & ALC_FLAG_MSI) != 0)
1699 msic = ALC_MSI_MESSAGES;
1702 for (i = 0; i < msic; i++) {
1703 if (sc->alc_intrhand[i] != NULL) {
1704 bus_teardown_intr(dev, sc->alc_irq[i],
1705 sc->alc_intrhand[i]);
1706 sc->alc_intrhand[i] = NULL;
1709 if (sc->alc_res[0] != NULL)
1711 bus_release_resources(dev, sc->alc_irq_spec, sc->alc_irq);
1712 if ((sc->alc_flags & (ALC_FLAG_MSI | ALC_FLAG_MSIX)) != 0)
1713 pci_release_msi(dev);
1714 bus_release_resources(dev, sc->alc_res_spec, sc->alc_res);
1715 mtx_destroy(&sc->alc_mtx);
1720 #define ALC_SYSCTL_STAT_ADD32(c, h, n, p, d) \
1721 SYSCTL_ADD_UINT(c, h, OID_AUTO, n, CTLFLAG_RD, p, 0, d)
1722 #define ALC_SYSCTL_STAT_ADD64(c, h, n, p, d) \
1723 SYSCTL_ADD_UQUAD(c, h, OID_AUTO, n, CTLFLAG_RD, p, d)
1726 alc_sysctl_node(struct alc_softc *sc)
1728 struct sysctl_ctx_list *ctx;
1729 struct sysctl_oid_list *child, *parent;
1730 struct sysctl_oid *tree;
1731 struct alc_hw_stats *stats;
1734 stats = &sc->alc_stats;
1735 ctx = device_get_sysctl_ctx(sc->alc_dev);
1736 child = SYSCTL_CHILDREN(device_get_sysctl_tree(sc->alc_dev));
1738 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "int_rx_mod",
1739 CTLTYPE_INT | CTLFLAG_RW, &sc->alc_int_rx_mod, 0,
1740 sysctl_hw_alc_int_mod, "I", "alc Rx interrupt moderation");
1741 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "int_tx_mod",
1742 CTLTYPE_INT | CTLFLAG_RW, &sc->alc_int_tx_mod, 0,
1743 sysctl_hw_alc_int_mod, "I", "alc Tx interrupt moderation");
1744 /* Pull in device tunables. */
1745 sc->alc_int_rx_mod = ALC_IM_RX_TIMER_DEFAULT;
1746 error = resource_int_value(device_get_name(sc->alc_dev),
1747 device_get_unit(sc->alc_dev), "int_rx_mod", &sc->alc_int_rx_mod);
1749 if (sc->alc_int_rx_mod < ALC_IM_TIMER_MIN ||
1750 sc->alc_int_rx_mod > ALC_IM_TIMER_MAX) {
1751 device_printf(sc->alc_dev, "int_rx_mod value out of "
1752 "range; using default: %d\n",
1753 ALC_IM_RX_TIMER_DEFAULT);
1754 sc->alc_int_rx_mod = ALC_IM_RX_TIMER_DEFAULT;
1757 sc->alc_int_tx_mod = ALC_IM_TX_TIMER_DEFAULT;
1758 error = resource_int_value(device_get_name(sc->alc_dev),
1759 device_get_unit(sc->alc_dev), "int_tx_mod", &sc->alc_int_tx_mod);
1761 if (sc->alc_int_tx_mod < ALC_IM_TIMER_MIN ||
1762 sc->alc_int_tx_mod > ALC_IM_TIMER_MAX) {
1763 device_printf(sc->alc_dev, "int_tx_mod value out of "
1764 "range; using default: %d\n",
1765 ALC_IM_TX_TIMER_DEFAULT);
1766 sc->alc_int_tx_mod = ALC_IM_TX_TIMER_DEFAULT;
1769 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "process_limit",
1770 CTLTYPE_INT | CTLFLAG_RW, &sc->alc_process_limit, 0,
1771 sysctl_hw_alc_proc_limit, "I",
1772 "max number of Rx events to process");
1773 /* Pull in device tunables. */
1774 sc->alc_process_limit = ALC_PROC_DEFAULT;
1775 error = resource_int_value(device_get_name(sc->alc_dev),
1776 device_get_unit(sc->alc_dev), "process_limit",
1777 &sc->alc_process_limit);
1779 if (sc->alc_process_limit < ALC_PROC_MIN ||
1780 sc->alc_process_limit > ALC_PROC_MAX) {
1781 device_printf(sc->alc_dev,
1782 "process_limit value out of range; "
1783 "using default: %d\n", ALC_PROC_DEFAULT);
1784 sc->alc_process_limit = ALC_PROC_DEFAULT;
1788 tree = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "stats", CTLFLAG_RD,
1789 NULL, "ALC statistics");
1790 parent = SYSCTL_CHILDREN(tree);
1792 /* Rx statistics. */
1793 tree = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "rx", CTLFLAG_RD,
1794 NULL, "Rx MAC statistics");
1795 child = SYSCTL_CHILDREN(tree);
1796 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_frames",
1797 &stats->rx_frames, "Good frames");
1798 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_bcast_frames",
1799 &stats->rx_bcast_frames, "Good broadcast frames");
1800 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_mcast_frames",
1801 &stats->rx_mcast_frames, "Good multicast frames");
1802 ALC_SYSCTL_STAT_ADD32(ctx, child, "pause_frames",
1803 &stats->rx_pause_frames, "Pause control frames");
1804 ALC_SYSCTL_STAT_ADD32(ctx, child, "control_frames",
1805 &stats->rx_control_frames, "Control frames");
1806 ALC_SYSCTL_STAT_ADD32(ctx, child, "crc_errs",
1807 &stats->rx_crcerrs, "CRC errors");
1808 ALC_SYSCTL_STAT_ADD32(ctx, child, "len_errs",
1809 &stats->rx_lenerrs, "Frames with length mismatched");
1810 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_octets",
1811 &stats->rx_bytes, "Good octets");
1812 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_bcast_octets",
1813 &stats->rx_bcast_bytes, "Good broadcast octets");
1814 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_mcast_octets",
1815 &stats->rx_mcast_bytes, "Good multicast octets");
1816 ALC_SYSCTL_STAT_ADD32(ctx, child, "runts",
1817 &stats->rx_runts, "Too short frames");
1818 ALC_SYSCTL_STAT_ADD32(ctx, child, "fragments",
1819 &stats->rx_fragments, "Fragmented frames");
1820 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_64",
1821 &stats->rx_pkts_64, "64 bytes frames");
1822 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_65_127",
1823 &stats->rx_pkts_65_127, "65 to 127 bytes frames");
1824 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_128_255",
1825 &stats->rx_pkts_128_255, "128 to 255 bytes frames");
1826 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_256_511",
1827 &stats->rx_pkts_256_511, "256 to 511 bytes frames");
1828 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_512_1023",
1829 &stats->rx_pkts_512_1023, "512 to 1023 bytes frames");
1830 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_1024_1518",
1831 &stats->rx_pkts_1024_1518, "1024 to 1518 bytes frames");
1832 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_1519_max",
1833 &stats->rx_pkts_1519_max, "1519 to max frames");
1834 ALC_SYSCTL_STAT_ADD32(ctx, child, "trunc_errs",
1835 &stats->rx_pkts_truncated, "Truncated frames due to MTU size");
1836 ALC_SYSCTL_STAT_ADD32(ctx, child, "fifo_oflows",
1837 &stats->rx_fifo_oflows, "FIFO overflows");
1838 ALC_SYSCTL_STAT_ADD32(ctx, child, "rrs_errs",
1839 &stats->rx_rrs_errs, "Return status write-back errors");
1840 ALC_SYSCTL_STAT_ADD32(ctx, child, "align_errs",
1841 &stats->rx_alignerrs, "Alignment errors");
1842 ALC_SYSCTL_STAT_ADD32(ctx, child, "filtered",
1843 &stats->rx_pkts_filtered,
1844 "Frames dropped due to address filtering");
1846 /* Tx statistics. */
1847 tree = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "tx", CTLFLAG_RD,
1848 NULL, "Tx MAC statistics");
1849 child = SYSCTL_CHILDREN(tree);
1850 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_frames",
1851 &stats->tx_frames, "Good frames");
1852 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_bcast_frames",
1853 &stats->tx_bcast_frames, "Good broadcast frames");
1854 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_mcast_frames",
1855 &stats->tx_mcast_frames, "Good multicast frames");
1856 ALC_SYSCTL_STAT_ADD32(ctx, child, "pause_frames",
1857 &stats->tx_pause_frames, "Pause control frames");
1858 ALC_SYSCTL_STAT_ADD32(ctx, child, "control_frames",
1859 &stats->tx_control_frames, "Control frames");
1860 ALC_SYSCTL_STAT_ADD32(ctx, child, "excess_defers",
1861 &stats->tx_excess_defer, "Frames with excessive derferrals");
1862 ALC_SYSCTL_STAT_ADD32(ctx, child, "defers",
1863 &stats->tx_excess_defer, "Frames with derferrals");
1864 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_octets",
1865 &stats->tx_bytes, "Good octets");
1866 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_bcast_octets",
1867 &stats->tx_bcast_bytes, "Good broadcast octets");
1868 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_mcast_octets",
1869 &stats->tx_mcast_bytes, "Good multicast octets");
1870 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_64",
1871 &stats->tx_pkts_64, "64 bytes frames");
1872 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_65_127",
1873 &stats->tx_pkts_65_127, "65 to 127 bytes frames");
1874 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_128_255",
1875 &stats->tx_pkts_128_255, "128 to 255 bytes frames");
1876 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_256_511",
1877 &stats->tx_pkts_256_511, "256 to 511 bytes frames");
1878 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_512_1023",
1879 &stats->tx_pkts_512_1023, "512 to 1023 bytes frames");
1880 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_1024_1518",
1881 &stats->tx_pkts_1024_1518, "1024 to 1518 bytes frames");
1882 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_1519_max",
1883 &stats->tx_pkts_1519_max, "1519 to max frames");
1884 ALC_SYSCTL_STAT_ADD32(ctx, child, "single_colls",
1885 &stats->tx_single_colls, "Single collisions");
1886 ALC_SYSCTL_STAT_ADD32(ctx, child, "multi_colls",
1887 &stats->tx_multi_colls, "Multiple collisions");
1888 ALC_SYSCTL_STAT_ADD32(ctx, child, "late_colls",
1889 &stats->tx_late_colls, "Late collisions");
1890 ALC_SYSCTL_STAT_ADD32(ctx, child, "excess_colls",
1891 &stats->tx_excess_colls, "Excessive collisions");
1892 ALC_SYSCTL_STAT_ADD32(ctx, child, "underruns",
1893 &stats->tx_underrun, "FIFO underruns");
1894 ALC_SYSCTL_STAT_ADD32(ctx, child, "desc_underruns",
1895 &stats->tx_desc_underrun, "Descriptor write-back errors");
1896 ALC_SYSCTL_STAT_ADD32(ctx, child, "len_errs",
1897 &stats->tx_lenerrs, "Frames with length mismatched");
1898 ALC_SYSCTL_STAT_ADD32(ctx, child, "trunc_errs",
1899 &stats->tx_pkts_truncated, "Truncated frames due to MTU size");
1902 #undef ALC_SYSCTL_STAT_ADD32
1903 #undef ALC_SYSCTL_STAT_ADD64
1905 struct alc_dmamap_arg {
1906 bus_addr_t alc_busaddr;
1910 alc_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
1912 struct alc_dmamap_arg *ctx;
1917 KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs));
1919 ctx = (struct alc_dmamap_arg *)arg;
1920 ctx->alc_busaddr = segs[0].ds_addr;
1924 * Normal and high Tx descriptors shares single Tx high address.
1925 * Four Rx descriptor/return rings and CMB shares the same Rx
1929 alc_check_boundary(struct alc_softc *sc)
1931 bus_addr_t cmb_end, rx_ring_end, rr_ring_end, tx_ring_end;
1933 rx_ring_end = sc->alc_rdata.alc_rx_ring_paddr + ALC_RX_RING_SZ;
1934 rr_ring_end = sc->alc_rdata.alc_rr_ring_paddr + ALC_RR_RING_SZ;
1935 cmb_end = sc->alc_rdata.alc_cmb_paddr + ALC_CMB_SZ;
1936 tx_ring_end = sc->alc_rdata.alc_tx_ring_paddr + ALC_TX_RING_SZ;
1938 /* 4GB boundary crossing is not allowed. */
1939 if ((ALC_ADDR_HI(rx_ring_end) !=
1940 ALC_ADDR_HI(sc->alc_rdata.alc_rx_ring_paddr)) ||
1941 (ALC_ADDR_HI(rr_ring_end) !=
1942 ALC_ADDR_HI(sc->alc_rdata.alc_rr_ring_paddr)) ||
1943 (ALC_ADDR_HI(cmb_end) !=
1944 ALC_ADDR_HI(sc->alc_rdata.alc_cmb_paddr)) ||
1945 (ALC_ADDR_HI(tx_ring_end) !=
1946 ALC_ADDR_HI(sc->alc_rdata.alc_tx_ring_paddr)))
1949 * Make sure Rx return descriptor/Rx descriptor/CMB use
1950 * the same high address.
1952 if ((ALC_ADDR_HI(rx_ring_end) != ALC_ADDR_HI(rr_ring_end)) ||
1953 (ALC_ADDR_HI(rx_ring_end) != ALC_ADDR_HI(cmb_end)))
1960 alc_dma_alloc(struct alc_softc *sc)
1962 struct alc_txdesc *txd;
1963 struct alc_rxdesc *rxd;
1965 struct alc_dmamap_arg ctx;
1968 lowaddr = BUS_SPACE_MAXADDR;
1970 /* Create parent DMA tag. */
1971 error = bus_dma_tag_create(
1972 bus_get_dma_tag(sc->alc_dev), /* parent */
1973 1, 0, /* alignment, boundary */
1974 lowaddr, /* lowaddr */
1975 BUS_SPACE_MAXADDR, /* highaddr */
1976 NULL, NULL, /* filter, filterarg */
1977 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
1979 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
1981 NULL, NULL, /* lockfunc, lockarg */
1982 &sc->alc_cdata.alc_parent_tag);
1984 device_printf(sc->alc_dev,
1985 "could not create parent DMA tag.\n");
1989 /* Create DMA tag for Tx descriptor ring. */
1990 error = bus_dma_tag_create(
1991 sc->alc_cdata.alc_parent_tag, /* parent */
1992 ALC_TX_RING_ALIGN, 0, /* alignment, boundary */
1993 BUS_SPACE_MAXADDR, /* lowaddr */
1994 BUS_SPACE_MAXADDR, /* highaddr */
1995 NULL, NULL, /* filter, filterarg */
1996 ALC_TX_RING_SZ, /* maxsize */
1998 ALC_TX_RING_SZ, /* maxsegsize */
2000 NULL, NULL, /* lockfunc, lockarg */
2001 &sc->alc_cdata.alc_tx_ring_tag);
2003 device_printf(sc->alc_dev,
2004 "could not create Tx ring DMA tag.\n");
2008 /* Create DMA tag for Rx free descriptor ring. */
2009 error = bus_dma_tag_create(
2010 sc->alc_cdata.alc_parent_tag, /* parent */
2011 ALC_RX_RING_ALIGN, 0, /* alignment, boundary */
2012 BUS_SPACE_MAXADDR, /* lowaddr */
2013 BUS_SPACE_MAXADDR, /* highaddr */
2014 NULL, NULL, /* filter, filterarg */
2015 ALC_RX_RING_SZ, /* maxsize */
2017 ALC_RX_RING_SZ, /* maxsegsize */
2019 NULL, NULL, /* lockfunc, lockarg */
2020 &sc->alc_cdata.alc_rx_ring_tag);
2022 device_printf(sc->alc_dev,
2023 "could not create Rx ring DMA tag.\n");
2026 /* Create DMA tag for Rx return descriptor ring. */
2027 error = bus_dma_tag_create(
2028 sc->alc_cdata.alc_parent_tag, /* parent */
2029 ALC_RR_RING_ALIGN, 0, /* alignment, boundary */
2030 BUS_SPACE_MAXADDR, /* lowaddr */
2031 BUS_SPACE_MAXADDR, /* highaddr */
2032 NULL, NULL, /* filter, filterarg */
2033 ALC_RR_RING_SZ, /* maxsize */
2035 ALC_RR_RING_SZ, /* maxsegsize */
2037 NULL, NULL, /* lockfunc, lockarg */
2038 &sc->alc_cdata.alc_rr_ring_tag);
2040 device_printf(sc->alc_dev,
2041 "could not create Rx return ring DMA tag.\n");
2045 /* Create DMA tag for coalescing message block. */
2046 error = bus_dma_tag_create(
2047 sc->alc_cdata.alc_parent_tag, /* parent */
2048 ALC_CMB_ALIGN, 0, /* alignment, boundary */
2049 BUS_SPACE_MAXADDR, /* lowaddr */
2050 BUS_SPACE_MAXADDR, /* highaddr */
2051 NULL, NULL, /* filter, filterarg */
2052 ALC_CMB_SZ, /* maxsize */
2054 ALC_CMB_SZ, /* maxsegsize */
2056 NULL, NULL, /* lockfunc, lockarg */
2057 &sc->alc_cdata.alc_cmb_tag);
2059 device_printf(sc->alc_dev,
2060 "could not create CMB DMA tag.\n");
2063 /* Create DMA tag for status message block. */
2064 error = bus_dma_tag_create(
2065 sc->alc_cdata.alc_parent_tag, /* parent */
2066 ALC_SMB_ALIGN, 0, /* alignment, boundary */
2067 BUS_SPACE_MAXADDR, /* lowaddr */
2068 BUS_SPACE_MAXADDR, /* highaddr */
2069 NULL, NULL, /* filter, filterarg */
2070 ALC_SMB_SZ, /* maxsize */
2072 ALC_SMB_SZ, /* maxsegsize */
2074 NULL, NULL, /* lockfunc, lockarg */
2075 &sc->alc_cdata.alc_smb_tag);
2077 device_printf(sc->alc_dev,
2078 "could not create SMB DMA tag.\n");
2082 /* Allocate DMA'able memory and load the DMA map for Tx ring. */
2083 error = bus_dmamem_alloc(sc->alc_cdata.alc_tx_ring_tag,
2084 (void **)&sc->alc_rdata.alc_tx_ring,
2085 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
2086 &sc->alc_cdata.alc_tx_ring_map);
2088 device_printf(sc->alc_dev,
2089 "could not allocate DMA'able memory for Tx ring.\n");
2092 ctx.alc_busaddr = 0;
2093 error = bus_dmamap_load(sc->alc_cdata.alc_tx_ring_tag,
2094 sc->alc_cdata.alc_tx_ring_map, sc->alc_rdata.alc_tx_ring,
2095 ALC_TX_RING_SZ, alc_dmamap_cb, &ctx, 0);
2096 if (error != 0 || ctx.alc_busaddr == 0) {
2097 device_printf(sc->alc_dev,
2098 "could not load DMA'able memory for Tx ring.\n");
2101 sc->alc_rdata.alc_tx_ring_paddr = ctx.alc_busaddr;
2103 /* Allocate DMA'able memory and load the DMA map for Rx ring. */
2104 error = bus_dmamem_alloc(sc->alc_cdata.alc_rx_ring_tag,
2105 (void **)&sc->alc_rdata.alc_rx_ring,
2106 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
2107 &sc->alc_cdata.alc_rx_ring_map);
2109 device_printf(sc->alc_dev,
2110 "could not allocate DMA'able memory for Rx ring.\n");
2113 ctx.alc_busaddr = 0;
2114 error = bus_dmamap_load(sc->alc_cdata.alc_rx_ring_tag,
2115 sc->alc_cdata.alc_rx_ring_map, sc->alc_rdata.alc_rx_ring,
2116 ALC_RX_RING_SZ, alc_dmamap_cb, &ctx, 0);
2117 if (error != 0 || ctx.alc_busaddr == 0) {
2118 device_printf(sc->alc_dev,
2119 "could not load DMA'able memory for Rx ring.\n");
2122 sc->alc_rdata.alc_rx_ring_paddr = ctx.alc_busaddr;
2124 /* Allocate DMA'able memory and load the DMA map for Rx return ring. */
2125 error = bus_dmamem_alloc(sc->alc_cdata.alc_rr_ring_tag,
2126 (void **)&sc->alc_rdata.alc_rr_ring,
2127 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
2128 &sc->alc_cdata.alc_rr_ring_map);
2130 device_printf(sc->alc_dev,
2131 "could not allocate DMA'able memory for Rx return ring.\n");
2134 ctx.alc_busaddr = 0;
2135 error = bus_dmamap_load(sc->alc_cdata.alc_rr_ring_tag,
2136 sc->alc_cdata.alc_rr_ring_map, sc->alc_rdata.alc_rr_ring,
2137 ALC_RR_RING_SZ, alc_dmamap_cb, &ctx, 0);
2138 if (error != 0 || ctx.alc_busaddr == 0) {
2139 device_printf(sc->alc_dev,
2140 "could not load DMA'able memory for Tx ring.\n");
2143 sc->alc_rdata.alc_rr_ring_paddr = ctx.alc_busaddr;
2145 /* Allocate DMA'able memory and load the DMA map for CMB. */
2146 error = bus_dmamem_alloc(sc->alc_cdata.alc_cmb_tag,
2147 (void **)&sc->alc_rdata.alc_cmb,
2148 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
2149 &sc->alc_cdata.alc_cmb_map);
2151 device_printf(sc->alc_dev,
2152 "could not allocate DMA'able memory for CMB.\n");
2155 ctx.alc_busaddr = 0;
2156 error = bus_dmamap_load(sc->alc_cdata.alc_cmb_tag,
2157 sc->alc_cdata.alc_cmb_map, sc->alc_rdata.alc_cmb,
2158 ALC_CMB_SZ, alc_dmamap_cb, &ctx, 0);
2159 if (error != 0 || ctx.alc_busaddr == 0) {
2160 device_printf(sc->alc_dev,
2161 "could not load DMA'able memory for CMB.\n");
2164 sc->alc_rdata.alc_cmb_paddr = ctx.alc_busaddr;
2166 /* Allocate DMA'able memory and load the DMA map for SMB. */
2167 error = bus_dmamem_alloc(sc->alc_cdata.alc_smb_tag,
2168 (void **)&sc->alc_rdata.alc_smb,
2169 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
2170 &sc->alc_cdata.alc_smb_map);
2172 device_printf(sc->alc_dev,
2173 "could not allocate DMA'able memory for SMB.\n");
2176 ctx.alc_busaddr = 0;
2177 error = bus_dmamap_load(sc->alc_cdata.alc_smb_tag,
2178 sc->alc_cdata.alc_smb_map, sc->alc_rdata.alc_smb,
2179 ALC_SMB_SZ, alc_dmamap_cb, &ctx, 0);
2180 if (error != 0 || ctx.alc_busaddr == 0) {
2181 device_printf(sc->alc_dev,
2182 "could not load DMA'able memory for CMB.\n");
2185 sc->alc_rdata.alc_smb_paddr = ctx.alc_busaddr;
2187 /* Make sure we've not crossed 4GB boundary. */
2188 if (lowaddr != BUS_SPACE_MAXADDR_32BIT &&
2189 (error = alc_check_boundary(sc)) != 0) {
2190 device_printf(sc->alc_dev, "4GB boundary crossed, "
2191 "switching to 32bit DMA addressing mode.\n");
2194 * Limit max allowable DMA address space to 32bit
2197 lowaddr = BUS_SPACE_MAXADDR_32BIT;
2202 * Create Tx buffer parent tag.
2203 * AR81[3567]x allows 64bit DMA addressing of Tx/Rx buffers
2204 * so it needs separate parent DMA tag as parent DMA address
2205 * space could be restricted to be within 32bit address space
2206 * by 4GB boundary crossing.
2208 error = bus_dma_tag_create(
2209 bus_get_dma_tag(sc->alc_dev), /* parent */
2210 1, 0, /* alignment, boundary */
2211 BUS_SPACE_MAXADDR, /* lowaddr */
2212 BUS_SPACE_MAXADDR, /* highaddr */
2213 NULL, NULL, /* filter, filterarg */
2214 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
2216 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
2218 NULL, NULL, /* lockfunc, lockarg */
2219 &sc->alc_cdata.alc_buffer_tag);
2221 device_printf(sc->alc_dev,
2222 "could not create parent buffer DMA tag.\n");
2226 /* Create DMA tag for Tx buffers. */
2227 error = bus_dma_tag_create(
2228 sc->alc_cdata.alc_buffer_tag, /* parent */
2229 1, 0, /* alignment, boundary */
2230 BUS_SPACE_MAXADDR, /* lowaddr */
2231 BUS_SPACE_MAXADDR, /* highaddr */
2232 NULL, NULL, /* filter, filterarg */
2233 ALC_TSO_MAXSIZE, /* maxsize */
2234 ALC_MAXTXSEGS, /* nsegments */
2235 ALC_TSO_MAXSEGSIZE, /* maxsegsize */
2237 NULL, NULL, /* lockfunc, lockarg */
2238 &sc->alc_cdata.alc_tx_tag);
2240 device_printf(sc->alc_dev, "could not create Tx DMA tag.\n");
2244 /* Create DMA tag for Rx buffers. */
2245 error = bus_dma_tag_create(
2246 sc->alc_cdata.alc_buffer_tag, /* parent */
2247 ALC_RX_BUF_ALIGN, 0, /* alignment, boundary */
2248 BUS_SPACE_MAXADDR, /* lowaddr */
2249 BUS_SPACE_MAXADDR, /* highaddr */
2250 NULL, NULL, /* filter, filterarg */
2251 MCLBYTES, /* maxsize */
2253 MCLBYTES, /* maxsegsize */
2255 NULL, NULL, /* lockfunc, lockarg */
2256 &sc->alc_cdata.alc_rx_tag);
2258 device_printf(sc->alc_dev, "could not create Rx DMA tag.\n");
2261 /* Create DMA maps for Tx buffers. */
2262 for (i = 0; i < ALC_TX_RING_CNT; i++) {
2263 txd = &sc->alc_cdata.alc_txdesc[i];
2265 txd->tx_dmamap = NULL;
2266 error = bus_dmamap_create(sc->alc_cdata.alc_tx_tag, 0,
2269 device_printf(sc->alc_dev,
2270 "could not create Tx dmamap.\n");
2274 /* Create DMA maps for Rx buffers. */
2275 if ((error = bus_dmamap_create(sc->alc_cdata.alc_rx_tag, 0,
2276 &sc->alc_cdata.alc_rx_sparemap)) != 0) {
2277 device_printf(sc->alc_dev,
2278 "could not create spare Rx dmamap.\n");
2281 for (i = 0; i < ALC_RX_RING_CNT; i++) {
2282 rxd = &sc->alc_cdata.alc_rxdesc[i];
2284 rxd->rx_dmamap = NULL;
2285 error = bus_dmamap_create(sc->alc_cdata.alc_rx_tag, 0,
2288 device_printf(sc->alc_dev,
2289 "could not create Rx dmamap.\n");
2299 alc_dma_free(struct alc_softc *sc)
2301 struct alc_txdesc *txd;
2302 struct alc_rxdesc *rxd;
2306 if (sc->alc_cdata.alc_tx_tag != NULL) {
2307 for (i = 0; i < ALC_TX_RING_CNT; i++) {
2308 txd = &sc->alc_cdata.alc_txdesc[i];
2309 if (txd->tx_dmamap != NULL) {
2310 bus_dmamap_destroy(sc->alc_cdata.alc_tx_tag,
2312 txd->tx_dmamap = NULL;
2315 bus_dma_tag_destroy(sc->alc_cdata.alc_tx_tag);
2316 sc->alc_cdata.alc_tx_tag = NULL;
2319 if (sc->alc_cdata.alc_rx_tag != NULL) {
2320 for (i = 0; i < ALC_RX_RING_CNT; i++) {
2321 rxd = &sc->alc_cdata.alc_rxdesc[i];
2322 if (rxd->rx_dmamap != NULL) {
2323 bus_dmamap_destroy(sc->alc_cdata.alc_rx_tag,
2325 rxd->rx_dmamap = NULL;
2328 if (sc->alc_cdata.alc_rx_sparemap != NULL) {
2329 bus_dmamap_destroy(sc->alc_cdata.alc_rx_tag,
2330 sc->alc_cdata.alc_rx_sparemap);
2331 sc->alc_cdata.alc_rx_sparemap = NULL;
2333 bus_dma_tag_destroy(sc->alc_cdata.alc_rx_tag);
2334 sc->alc_cdata.alc_rx_tag = NULL;
2336 /* Tx descriptor ring. */
2337 if (sc->alc_cdata.alc_tx_ring_tag != NULL) {
2338 if (sc->alc_rdata.alc_tx_ring_paddr != 0)
2339 bus_dmamap_unload(sc->alc_cdata.alc_tx_ring_tag,
2340 sc->alc_cdata.alc_tx_ring_map);
2341 if (sc->alc_rdata.alc_tx_ring != NULL)
2342 bus_dmamem_free(sc->alc_cdata.alc_tx_ring_tag,
2343 sc->alc_rdata.alc_tx_ring,
2344 sc->alc_cdata.alc_tx_ring_map);
2345 sc->alc_rdata.alc_tx_ring_paddr = 0;
2346 sc->alc_rdata.alc_tx_ring = NULL;
2347 bus_dma_tag_destroy(sc->alc_cdata.alc_tx_ring_tag);
2348 sc->alc_cdata.alc_tx_ring_tag = NULL;
2351 if (sc->alc_cdata.alc_rx_ring_tag != NULL) {
2352 if (sc->alc_rdata.alc_rx_ring_paddr != 0)
2353 bus_dmamap_unload(sc->alc_cdata.alc_rx_ring_tag,
2354 sc->alc_cdata.alc_rx_ring_map);
2355 if (sc->alc_rdata.alc_rx_ring != NULL)
2356 bus_dmamem_free(sc->alc_cdata.alc_rx_ring_tag,
2357 sc->alc_rdata.alc_rx_ring,
2358 sc->alc_cdata.alc_rx_ring_map);
2359 sc->alc_rdata.alc_rx_ring_paddr = 0;
2360 sc->alc_rdata.alc_rx_ring = NULL;
2361 bus_dma_tag_destroy(sc->alc_cdata.alc_rx_ring_tag);
2362 sc->alc_cdata.alc_rx_ring_tag = NULL;
2364 /* Rx return ring. */
2365 if (sc->alc_cdata.alc_rr_ring_tag != NULL) {
2366 if (sc->alc_rdata.alc_rr_ring_paddr != 0)
2367 bus_dmamap_unload(sc->alc_cdata.alc_rr_ring_tag,
2368 sc->alc_cdata.alc_rr_ring_map);
2369 if (sc->alc_rdata.alc_rr_ring != NULL)
2370 bus_dmamem_free(sc->alc_cdata.alc_rr_ring_tag,
2371 sc->alc_rdata.alc_rr_ring,
2372 sc->alc_cdata.alc_rr_ring_map);
2373 sc->alc_rdata.alc_rr_ring_paddr = 0;
2374 sc->alc_rdata.alc_rr_ring = NULL;
2375 bus_dma_tag_destroy(sc->alc_cdata.alc_rr_ring_tag);
2376 sc->alc_cdata.alc_rr_ring_tag = NULL;
2379 if (sc->alc_cdata.alc_cmb_tag != NULL) {
2380 if (sc->alc_rdata.alc_cmb_paddr != 0)
2381 bus_dmamap_unload(sc->alc_cdata.alc_cmb_tag,
2382 sc->alc_cdata.alc_cmb_map);
2383 if (sc->alc_rdata.alc_cmb != NULL)
2384 bus_dmamem_free(sc->alc_cdata.alc_cmb_tag,
2385 sc->alc_rdata.alc_cmb,
2386 sc->alc_cdata.alc_cmb_map);
2387 sc->alc_rdata.alc_cmb_paddr = 0;
2388 sc->alc_rdata.alc_cmb = NULL;
2389 bus_dma_tag_destroy(sc->alc_cdata.alc_cmb_tag);
2390 sc->alc_cdata.alc_cmb_tag = NULL;
2393 if (sc->alc_cdata.alc_smb_tag != NULL) {
2394 if (sc->alc_rdata.alc_smb_paddr != 0)
2395 bus_dmamap_unload(sc->alc_cdata.alc_smb_tag,
2396 sc->alc_cdata.alc_smb_map);
2397 if (sc->alc_rdata.alc_smb != NULL)
2398 bus_dmamem_free(sc->alc_cdata.alc_smb_tag,
2399 sc->alc_rdata.alc_smb,
2400 sc->alc_cdata.alc_smb_map);
2401 sc->alc_rdata.alc_smb_paddr = 0;
2402 sc->alc_rdata.alc_smb = NULL;
2403 bus_dma_tag_destroy(sc->alc_cdata.alc_smb_tag);
2404 sc->alc_cdata.alc_smb_tag = NULL;
2406 if (sc->alc_cdata.alc_buffer_tag != NULL) {
2407 bus_dma_tag_destroy(sc->alc_cdata.alc_buffer_tag);
2408 sc->alc_cdata.alc_buffer_tag = NULL;
2410 if (sc->alc_cdata.alc_parent_tag != NULL) {
2411 bus_dma_tag_destroy(sc->alc_cdata.alc_parent_tag);
2412 sc->alc_cdata.alc_parent_tag = NULL;
2417 alc_shutdown(device_t dev)
2420 return (alc_suspend(dev));
2424 * Note, this driver resets the link speed to 10/100Mbps by
2425 * restarting auto-negotiation in suspend/shutdown phase but we
2426 * don't know whether that auto-negotiation would succeed or not
2427 * as driver has no control after powering off/suspend operation.
2428 * If the renegotiation fail WOL may not work. Running at 1Gbps
2429 * will draw more power than 375mA at 3.3V which is specified in
2430 * PCI specification and that would result in complete
2431 * shutdowning power to ethernet controller.
2434 * Save current negotiated media speed/duplex/flow-control to
2435 * softc and restore the same link again after resuming. PHY
2436 * handling such as power down/resetting to 100Mbps may be better
2437 * handled in suspend method in phy driver.
2440 alc_setlinkspeed(struct alc_softc *sc)
2442 struct mii_data *mii;
2445 mii = device_get_softc(sc->alc_miibus);
2448 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) ==
2449 (IFM_ACTIVE | IFM_AVALID)) {
2450 switch IFM_SUBTYPE(mii->mii_media_active) {
2461 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, MII_100T2CR, 0);
2462 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
2463 MII_ANAR, ANAR_TX_FD | ANAR_TX | ANAR_10_FD | ANAR_10 | ANAR_CSMA);
2464 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
2465 MII_BMCR, BMCR_RESET | BMCR_AUTOEN | BMCR_STARTNEG);
2469 * Poll link state until alc(4) get a 10/100Mbps link.
2471 for (i = 0; i < MII_ANEGTICKS_GIGE; i++) {
2473 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID))
2474 == (IFM_ACTIVE | IFM_AVALID)) {
2475 switch (IFM_SUBTYPE(
2476 mii->mii_media_active)) {
2486 pause("alclnk", hz);
2489 if (i == MII_ANEGTICKS_GIGE)
2490 device_printf(sc->alc_dev,
2491 "establishing a link failed, WOL may not work!");
2494 * No link, force MAC to have 100Mbps, full-duplex link.
2495 * This is the last resort and may/may not work.
2497 mii->mii_media_status = IFM_AVALID | IFM_ACTIVE;
2498 mii->mii_media_active = IFM_ETHER | IFM_100_TX | IFM_FDX;
2503 alc_setwol(struct alc_softc *sc)
2506 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
2507 alc_setwol_816x(sc);
2509 alc_setwol_813x(sc);
2513 alc_setwol_813x(struct alc_softc *sc)
2519 ALC_LOCK_ASSERT(sc);
2521 alc_disable_l0s_l1(sc);
2523 if ((sc->alc_flags & ALC_FLAG_PM) == 0) {
2525 CSR_WRITE_4(sc, ALC_WOL_CFG, 0);
2526 reg = CSR_READ_4(sc, ALC_PCIE_PHYMISC);
2527 reg |= PCIE_PHYMISC_FORCE_RCV_DET;
2528 CSR_WRITE_4(sc, ALC_PCIE_PHYMISC, reg);
2529 /* Force PHY power down. */
2531 CSR_WRITE_4(sc, ALC_MASTER_CFG,
2532 CSR_READ_4(sc, ALC_MASTER_CFG) | MASTER_CLK_SEL_DIS);
2536 if ((ifp->if_capenable & IFCAP_WOL) != 0) {
2537 if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0)
2538 alc_setlinkspeed(sc);
2539 CSR_WRITE_4(sc, ALC_MASTER_CFG,
2540 CSR_READ_4(sc, ALC_MASTER_CFG) & ~MASTER_CLK_SEL_DIS);
2544 if ((ifp->if_capenable & IFCAP_WOL_MAGIC) != 0)
2545 pmcs |= WOL_CFG_MAGIC | WOL_CFG_MAGIC_ENB;
2546 CSR_WRITE_4(sc, ALC_WOL_CFG, pmcs);
2547 reg = CSR_READ_4(sc, ALC_MAC_CFG);
2548 reg &= ~(MAC_CFG_DBG | MAC_CFG_PROMISC | MAC_CFG_ALLMULTI |
2550 if ((ifp->if_capenable & IFCAP_WOL_MCAST) != 0)
2551 reg |= MAC_CFG_ALLMULTI | MAC_CFG_BCAST;
2552 if ((ifp->if_capenable & IFCAP_WOL) != 0)
2553 reg |= MAC_CFG_RX_ENB;
2554 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
2556 reg = CSR_READ_4(sc, ALC_PCIE_PHYMISC);
2557 reg |= PCIE_PHYMISC_FORCE_RCV_DET;
2558 CSR_WRITE_4(sc, ALC_PCIE_PHYMISC, reg);
2559 if ((ifp->if_capenable & IFCAP_WOL) == 0) {
2560 /* WOL disabled, PHY power down. */
2562 CSR_WRITE_4(sc, ALC_MASTER_CFG,
2563 CSR_READ_4(sc, ALC_MASTER_CFG) | MASTER_CLK_SEL_DIS);
2566 pmstat = pci_read_config(sc->alc_dev,
2567 sc->alc_pmcap + PCIR_POWER_STATUS, 2);
2568 pmstat &= ~(PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE);
2569 if ((ifp->if_capenable & IFCAP_WOL) != 0)
2570 pmstat |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE;
2571 pci_write_config(sc->alc_dev,
2572 sc->alc_pmcap + PCIR_POWER_STATUS, pmstat, 2);
2576 alc_setwol_816x(struct alc_softc *sc)
2579 uint32_t gphy, mac, master, pmcs, reg;
2582 ALC_LOCK_ASSERT(sc);
2585 master = CSR_READ_4(sc, ALC_MASTER_CFG);
2586 master &= ~MASTER_CLK_SEL_DIS;
2587 gphy = CSR_READ_4(sc, ALC_GPHY_CFG);
2588 gphy &= ~(GPHY_CFG_EXT_RESET | GPHY_CFG_LED_MODE | GPHY_CFG_100AB_ENB |
2589 GPHY_CFG_PHY_PLL_ON);
2590 gphy |= GPHY_CFG_HIB_EN | GPHY_CFG_HIB_PULSE | GPHY_CFG_SEL_ANA_RESET;
2591 if ((sc->alc_flags & ALC_FLAG_PM) == 0) {
2592 CSR_WRITE_4(sc, ALC_WOL_CFG, 0);
2593 gphy |= GPHY_CFG_PHY_IDDQ | GPHY_CFG_PWDOWN_HW;
2594 mac = CSR_READ_4(sc, ALC_MAC_CFG);
2596 if ((ifp->if_capenable & IFCAP_WOL) != 0) {
2597 gphy |= GPHY_CFG_EXT_RESET;
2598 if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0)
2599 alc_setlinkspeed(sc);
2602 if ((ifp->if_capenable & IFCAP_WOL_MAGIC) != 0)
2603 pmcs |= WOL_CFG_MAGIC | WOL_CFG_MAGIC_ENB;
2604 CSR_WRITE_4(sc, ALC_WOL_CFG, pmcs);
2605 mac = CSR_READ_4(sc, ALC_MAC_CFG);
2606 mac &= ~(MAC_CFG_DBG | MAC_CFG_PROMISC | MAC_CFG_ALLMULTI |
2608 if ((ifp->if_capenable & IFCAP_WOL_MCAST) != 0)
2609 mac |= MAC_CFG_ALLMULTI | MAC_CFG_BCAST;
2610 if ((ifp->if_capenable & IFCAP_WOL) != 0)
2611 mac |= MAC_CFG_RX_ENB;
2612 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_S3DIG10,
2617 reg = CSR_READ_4(sc, ALC_MISC);
2618 reg &= ~MISC_INTNLOSC_OPEN;
2619 CSR_WRITE_4(sc, ALC_MISC, reg);
2620 reg |= MISC_INTNLOSC_OPEN;
2621 CSR_WRITE_4(sc, ALC_MISC, reg);
2622 CSR_WRITE_4(sc, ALC_MASTER_CFG, master);
2623 CSR_WRITE_4(sc, ALC_MAC_CFG, mac);
2624 CSR_WRITE_4(sc, ALC_GPHY_CFG, gphy);
2625 reg = CSR_READ_4(sc, ALC_PDLL_TRNS1);
2626 reg |= PDLL_TRNS1_D3PLLOFF_ENB;
2627 CSR_WRITE_4(sc, ALC_PDLL_TRNS1, reg);
2629 if ((sc->alc_flags & ALC_FLAG_PM) != 0) {
2631 pmstat = pci_read_config(sc->alc_dev,
2632 sc->alc_pmcap + PCIR_POWER_STATUS, 2);
2633 pmstat &= ~(PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE);
2634 if ((ifp->if_capenable & IFCAP_WOL) != 0)
2635 pmstat |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE;
2636 pci_write_config(sc->alc_dev,
2637 sc->alc_pmcap + PCIR_POWER_STATUS, pmstat, 2);
2642 alc_suspend(device_t dev)
2644 struct alc_softc *sc;
2646 sc = device_get_softc(dev);
2657 alc_resume(device_t dev)
2659 struct alc_softc *sc;
2663 sc = device_get_softc(dev);
2666 if ((sc->alc_flags & ALC_FLAG_PM) != 0) {
2667 /* Disable PME and clear PME status. */
2668 pmstat = pci_read_config(sc->alc_dev,
2669 sc->alc_pmcap + PCIR_POWER_STATUS, 2);
2670 if ((pmstat & PCIM_PSTAT_PMEENABLE) != 0) {
2671 pmstat &= ~PCIM_PSTAT_PMEENABLE;
2672 pci_write_config(sc->alc_dev,
2673 sc->alc_pmcap + PCIR_POWER_STATUS, pmstat, 2);
2679 if ((ifp->if_flags & IFF_UP) != 0) {
2680 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
2681 alc_init_locked(sc);
2689 alc_encap(struct alc_softc *sc, struct mbuf **m_head)
2691 struct alc_txdesc *txd, *txd_last;
2692 struct tx_desc *desc;
2696 bus_dma_segment_t txsegs[ALC_MAXTXSEGS];
2698 uint32_t cflags, hdrlen, ip_off, poff, vtag;
2699 int error, idx, nsegs, prod;
2701 ALC_LOCK_ASSERT(sc);
2703 M_ASSERTPKTHDR((*m_head));
2709 if ((m->m_pkthdr.csum_flags & (ALC_CSUM_FEATURES | CSUM_TSO)) != 0) {
2711 * AR81[3567]x requires offset of TCP/UDP header in its
2712 * Tx descriptor to perform Tx checksum offloading. TSO
2713 * also requires TCP header offset and modification of
2714 * IP/TCP header. This kind of operation takes many CPU
2715 * cycles on FreeBSD so fast host CPU is required to get
2716 * smooth TSO performance.
2718 struct ether_header *eh;
2720 if (M_WRITABLE(m) == 0) {
2721 /* Get a writable copy. */
2722 m = m_dup(*m_head, M_NOWAIT);
2723 /* Release original mbufs. */
2732 ip_off = sizeof(struct ether_header);
2733 m = m_pullup(m, ip_off);
2738 eh = mtod(m, struct ether_header *);
2740 * Check if hardware VLAN insertion is off.
2741 * Additional check for LLC/SNAP frame?
2743 if (eh->ether_type == htons(ETHERTYPE_VLAN)) {
2744 ip_off = sizeof(struct ether_vlan_header);
2745 m = m_pullup(m, ip_off);
2751 m = m_pullup(m, ip_off + sizeof(struct ip));
2756 ip = (struct ip *)(mtod(m, char *) + ip_off);
2757 poff = ip_off + (ip->ip_hl << 2);
2758 if ((m->m_pkthdr.csum_flags & CSUM_TSO) != 0) {
2759 m = m_pullup(m, poff + sizeof(struct tcphdr));
2764 tcp = (struct tcphdr *)(mtod(m, char *) + poff);
2765 m = m_pullup(m, poff + (tcp->th_off << 2));
2771 * Due to strict adherence of Microsoft NDIS
2772 * Large Send specification, hardware expects
2773 * a pseudo TCP checksum inserted by upper
2774 * stack. Unfortunately the pseudo TCP
2775 * checksum that NDIS refers to does not include
2776 * TCP payload length so driver should recompute
2777 * the pseudo checksum here. Hopefully this
2778 * wouldn't be much burden on modern CPUs.
2780 * Reset IP checksum and recompute TCP pseudo
2781 * checksum as NDIS specification said.
2783 ip = (struct ip *)(mtod(m, char *) + ip_off);
2784 tcp = (struct tcphdr *)(mtod(m, char *) + poff);
2786 tcp->th_sum = in_pseudo(ip->ip_src.s_addr,
2787 ip->ip_dst.s_addr, htons(IPPROTO_TCP));
2792 prod = sc->alc_cdata.alc_tx_prod;
2793 txd = &sc->alc_cdata.alc_txdesc[prod];
2795 map = txd->tx_dmamap;
2797 error = bus_dmamap_load_mbuf_sg(sc->alc_cdata.alc_tx_tag, map,
2798 *m_head, txsegs, &nsegs, 0);
2799 if (error == EFBIG) {
2800 m = m_collapse(*m_head, M_NOWAIT, ALC_MAXTXSEGS);
2807 error = bus_dmamap_load_mbuf_sg(sc->alc_cdata.alc_tx_tag, map,
2808 *m_head, txsegs, &nsegs, 0);
2814 } else if (error != 0)
2822 /* Check descriptor overrun. */
2823 if (sc->alc_cdata.alc_tx_cnt + nsegs >= ALC_TX_RING_CNT - 3) {
2824 bus_dmamap_unload(sc->alc_cdata.alc_tx_tag, map);
2827 bus_dmamap_sync(sc->alc_cdata.alc_tx_tag, map, BUS_DMASYNC_PREWRITE);
2830 cflags = TD_ETHERNET;
2834 /* Configure VLAN hardware tag insertion. */
2835 if ((m->m_flags & M_VLANTAG) != 0) {
2836 vtag = htons(m->m_pkthdr.ether_vtag);
2837 vtag = (vtag << TD_VLAN_SHIFT) & TD_VLAN_MASK;
2838 cflags |= TD_INS_VLAN_TAG;
2840 if ((m->m_pkthdr.csum_flags & CSUM_TSO) != 0) {
2841 /* Request TSO and set MSS. */
2842 cflags |= TD_TSO | TD_TSO_DESCV1;
2843 cflags |= ((uint32_t)m->m_pkthdr.tso_segsz << TD_MSS_SHIFT) &
2845 /* Set TCP header offset. */
2846 cflags |= (poff << TD_TCPHDR_OFFSET_SHIFT) &
2847 TD_TCPHDR_OFFSET_MASK;
2849 * AR81[3567]x requires the first buffer should
2850 * only hold IP/TCP header data. Payload should
2851 * be handled in other descriptors.
2853 hdrlen = poff + (tcp->th_off << 2);
2854 desc = &sc->alc_rdata.alc_tx_ring[prod];
2855 desc->len = htole32(TX_BYTES(hdrlen | vtag));
2856 desc->flags = htole32(cflags);
2857 desc->addr = htole64(txsegs[0].ds_addr);
2858 sc->alc_cdata.alc_tx_cnt++;
2859 ALC_DESC_INC(prod, ALC_TX_RING_CNT);
2860 if (m->m_len - hdrlen > 0) {
2861 /* Handle remaining payload of the first fragment. */
2862 desc = &sc->alc_rdata.alc_tx_ring[prod];
2863 desc->len = htole32(TX_BYTES((m->m_len - hdrlen) |
2865 desc->flags = htole32(cflags);
2866 desc->addr = htole64(txsegs[0].ds_addr + hdrlen);
2867 sc->alc_cdata.alc_tx_cnt++;
2868 ALC_DESC_INC(prod, ALC_TX_RING_CNT);
2870 /* Handle remaining fragments. */
2872 } else if ((m->m_pkthdr.csum_flags & ALC_CSUM_FEATURES) != 0) {
2873 /* Configure Tx checksum offload. */
2874 #ifdef ALC_USE_CUSTOM_CSUM
2875 cflags |= TD_CUSTOM_CSUM;
2876 /* Set checksum start offset. */
2877 cflags |= ((poff >> 1) << TD_PLOAD_OFFSET_SHIFT) &
2878 TD_PLOAD_OFFSET_MASK;
2879 /* Set checksum insertion position of TCP/UDP. */
2880 cflags |= (((poff + m->m_pkthdr.csum_data) >> 1) <<
2881 TD_CUSTOM_CSUM_OFFSET_SHIFT) & TD_CUSTOM_CSUM_OFFSET_MASK;
2883 if ((m->m_pkthdr.csum_flags & CSUM_IP) != 0)
2884 cflags |= TD_IPCSUM;
2885 if ((m->m_pkthdr.csum_flags & CSUM_TCP) != 0)
2886 cflags |= TD_TCPCSUM;
2887 if ((m->m_pkthdr.csum_flags & CSUM_UDP) != 0)
2888 cflags |= TD_UDPCSUM;
2889 /* Set TCP/UDP header offset. */
2890 cflags |= (poff << TD_L4HDR_OFFSET_SHIFT) &
2891 TD_L4HDR_OFFSET_MASK;
2894 for (; idx < nsegs; idx++) {
2895 desc = &sc->alc_rdata.alc_tx_ring[prod];
2896 desc->len = htole32(TX_BYTES(txsegs[idx].ds_len) | vtag);
2897 desc->flags = htole32(cflags);
2898 desc->addr = htole64(txsegs[idx].ds_addr);
2899 sc->alc_cdata.alc_tx_cnt++;
2900 ALC_DESC_INC(prod, ALC_TX_RING_CNT);
2902 /* Update producer index. */
2903 sc->alc_cdata.alc_tx_prod = prod;
2905 /* Finally set EOP on the last descriptor. */
2906 prod = (prod + ALC_TX_RING_CNT - 1) % ALC_TX_RING_CNT;
2907 desc = &sc->alc_rdata.alc_tx_ring[prod];
2908 desc->flags |= htole32(TD_EOP);
2910 /* Swap dmamap of the first and the last. */
2911 txd = &sc->alc_cdata.alc_txdesc[prod];
2912 map = txd_last->tx_dmamap;
2913 txd_last->tx_dmamap = txd->tx_dmamap;
2914 txd->tx_dmamap = map;
2921 alc_start(struct ifnet *ifp)
2923 struct alc_softc *sc;
2927 alc_start_locked(ifp);
2932 alc_start_locked(struct ifnet *ifp)
2934 struct alc_softc *sc;
2935 struct mbuf *m_head;
2940 ALC_LOCK_ASSERT(sc);
2942 /* Reclaim transmitted frames. */
2943 if (sc->alc_cdata.alc_tx_cnt >= ALC_TX_DESC_HIWAT)
2946 if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) !=
2947 IFF_DRV_RUNNING || (sc->alc_flags & ALC_FLAG_LINK) == 0)
2950 for (enq = 0; !IFQ_DRV_IS_EMPTY(&ifp->if_snd); ) {
2951 IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head);
2955 * Pack the data into the transmit ring. If we
2956 * don't have room, set the OACTIVE flag and wait
2957 * for the NIC to drain the ring.
2959 if (alc_encap(sc, &m_head)) {
2962 IFQ_DRV_PREPEND(&ifp->if_snd, m_head);
2963 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2969 * If there's a BPF listener, bounce a copy of this frame
2972 ETHER_BPF_MTAP(ifp, m_head);
2976 /* Sync descriptors. */
2977 bus_dmamap_sync(sc->alc_cdata.alc_tx_ring_tag,
2978 sc->alc_cdata.alc_tx_ring_map, BUS_DMASYNC_PREWRITE);
2979 /* Kick. Assume we're using normal Tx priority queue. */
2980 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
2981 CSR_WRITE_2(sc, ALC_MBOX_TD_PRI0_PROD_IDX,
2982 (uint16_t)sc->alc_cdata.alc_tx_prod);
2984 CSR_WRITE_4(sc, ALC_MBOX_TD_PROD_IDX,
2985 (sc->alc_cdata.alc_tx_prod <<
2986 MBOX_TD_PROD_LO_IDX_SHIFT) &
2987 MBOX_TD_PROD_LO_IDX_MASK);
2988 /* Set a timeout in case the chip goes out to lunch. */
2989 sc->alc_watchdog_timer = ALC_TX_TIMEOUT;
2994 alc_watchdog(struct alc_softc *sc)
2998 ALC_LOCK_ASSERT(sc);
3000 if (sc->alc_watchdog_timer == 0 || --sc->alc_watchdog_timer)
3004 if ((sc->alc_flags & ALC_FLAG_LINK) == 0) {
3005 if_printf(sc->alc_ifp, "watchdog timeout (lost link)\n");
3006 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
3007 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
3008 alc_init_locked(sc);
3011 if_printf(sc->alc_ifp, "watchdog timeout -- resetting\n");
3012 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
3013 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
3014 alc_init_locked(sc);
3015 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
3016 alc_start_locked(ifp);
3020 alc_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
3022 struct alc_softc *sc;
3024 struct mii_data *mii;
3028 ifr = (struct ifreq *)data;
3032 if (ifr->ifr_mtu < ETHERMIN ||
3033 ifr->ifr_mtu > (sc->alc_ident->max_framelen -
3034 sizeof(struct ether_vlan_header) - ETHER_CRC_LEN) ||
3035 ((sc->alc_flags & ALC_FLAG_JUMBO) == 0 &&
3036 ifr->ifr_mtu > ETHERMTU))
3038 else if (ifp->if_mtu != ifr->ifr_mtu) {
3040 ifp->if_mtu = ifr->ifr_mtu;
3041 /* AR81[3567]x has 13 bits MSS field. */
3042 if (ifp->if_mtu > ALC_TSO_MTU &&
3043 (ifp->if_capenable & IFCAP_TSO4) != 0) {
3044 ifp->if_capenable &= ~IFCAP_TSO4;
3045 ifp->if_hwassist &= ~CSUM_TSO;
3046 VLAN_CAPABILITIES(ifp);
3053 if ((ifp->if_flags & IFF_UP) != 0) {
3054 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0 &&
3055 ((ifp->if_flags ^ sc->alc_if_flags) &
3056 (IFF_PROMISC | IFF_ALLMULTI)) != 0)
3059 alc_init_locked(sc);
3060 } else if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
3062 sc->alc_if_flags = ifp->if_flags;
3068 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
3074 mii = device_get_softc(sc->alc_miibus);
3075 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, cmd);
3079 mask = ifr->ifr_reqcap ^ ifp->if_capenable;
3080 if ((mask & IFCAP_TXCSUM) != 0 &&
3081 (ifp->if_capabilities & IFCAP_TXCSUM) != 0) {
3082 ifp->if_capenable ^= IFCAP_TXCSUM;
3083 if ((ifp->if_capenable & IFCAP_TXCSUM) != 0)
3084 ifp->if_hwassist |= ALC_CSUM_FEATURES;
3086 ifp->if_hwassist &= ~ALC_CSUM_FEATURES;
3088 if ((mask & IFCAP_TSO4) != 0 &&
3089 (ifp->if_capabilities & IFCAP_TSO4) != 0) {
3090 ifp->if_capenable ^= IFCAP_TSO4;
3091 if ((ifp->if_capenable & IFCAP_TSO4) != 0) {
3092 /* AR81[3567]x has 13 bits MSS field. */
3093 if (ifp->if_mtu > ALC_TSO_MTU) {
3094 ifp->if_capenable &= ~IFCAP_TSO4;
3095 ifp->if_hwassist &= ~CSUM_TSO;
3097 ifp->if_hwassist |= CSUM_TSO;
3099 ifp->if_hwassist &= ~CSUM_TSO;
3101 if ((mask & IFCAP_WOL_MCAST) != 0 &&
3102 (ifp->if_capabilities & IFCAP_WOL_MCAST) != 0)
3103 ifp->if_capenable ^= IFCAP_WOL_MCAST;
3104 if ((mask & IFCAP_WOL_MAGIC) != 0 &&
3105 (ifp->if_capabilities & IFCAP_WOL_MAGIC) != 0)
3106 ifp->if_capenable ^= IFCAP_WOL_MAGIC;
3107 if ((mask & IFCAP_VLAN_HWTAGGING) != 0 &&
3108 (ifp->if_capabilities & IFCAP_VLAN_HWTAGGING) != 0) {
3109 ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING;
3112 if ((mask & IFCAP_VLAN_HWCSUM) != 0 &&
3113 (ifp->if_capabilities & IFCAP_VLAN_HWCSUM) != 0)
3114 ifp->if_capenable ^= IFCAP_VLAN_HWCSUM;
3115 if ((mask & IFCAP_VLAN_HWTSO) != 0 &&
3116 (ifp->if_capabilities & IFCAP_VLAN_HWTSO) != 0)
3117 ifp->if_capenable ^= IFCAP_VLAN_HWTSO;
3118 if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) == 0)
3119 ifp->if_capenable &=
3120 ~(IFCAP_VLAN_HWTSO | IFCAP_VLAN_HWCSUM);
3122 VLAN_CAPABILITIES(ifp);
3125 error = ether_ioctl(ifp, cmd, data);
3133 alc_mac_config(struct alc_softc *sc)
3135 struct mii_data *mii;
3138 ALC_LOCK_ASSERT(sc);
3140 mii = device_get_softc(sc->alc_miibus);
3141 reg = CSR_READ_4(sc, ALC_MAC_CFG);
3142 reg &= ~(MAC_CFG_FULL_DUPLEX | MAC_CFG_TX_FC | MAC_CFG_RX_FC |
3143 MAC_CFG_SPEED_MASK);
3144 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0 ||
3145 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151 ||
3146 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2 ||
3147 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2)
3148 reg |= MAC_CFG_HASH_ALG_CRC32 | MAC_CFG_SPEED_MODE_SW;
3149 /* Reprogram MAC with resolved speed/duplex. */
3150 switch (IFM_SUBTYPE(mii->mii_media_active)) {
3153 reg |= MAC_CFG_SPEED_10_100;
3156 reg |= MAC_CFG_SPEED_1000;
3159 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) {
3160 reg |= MAC_CFG_FULL_DUPLEX;
3161 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_TXPAUSE) != 0)
3162 reg |= MAC_CFG_TX_FC;
3163 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_RXPAUSE) != 0)
3164 reg |= MAC_CFG_RX_FC;
3166 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
3170 alc_stats_clear(struct alc_softc *sc)
3172 struct smb sb, *smb;
3176 if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0) {
3177 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag,
3178 sc->alc_cdata.alc_smb_map,
3179 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
3180 smb = sc->alc_rdata.alc_smb;
3181 /* Update done, clear. */
3183 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag,
3184 sc->alc_cdata.alc_smb_map,
3185 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
3187 for (reg = &sb.rx_frames, i = 0; reg <= &sb.rx_pkts_filtered;
3189 CSR_READ_4(sc, ALC_RX_MIB_BASE + i);
3190 i += sizeof(uint32_t);
3192 /* Read Tx statistics. */
3193 for (reg = &sb.tx_frames, i = 0; reg <= &sb.tx_mcast_bytes;
3195 CSR_READ_4(sc, ALC_TX_MIB_BASE + i);
3196 i += sizeof(uint32_t);
3202 alc_stats_update(struct alc_softc *sc)
3204 struct alc_hw_stats *stat;
3205 struct smb sb, *smb;
3210 ALC_LOCK_ASSERT(sc);
3213 stat = &sc->alc_stats;
3214 if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0) {
3215 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag,
3216 sc->alc_cdata.alc_smb_map,
3217 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
3218 smb = sc->alc_rdata.alc_smb;
3219 if (smb->updated == 0)
3223 /* Read Rx statistics. */
3224 for (reg = &sb.rx_frames, i = 0; reg <= &sb.rx_pkts_filtered;
3226 *reg = CSR_READ_4(sc, ALC_RX_MIB_BASE + i);
3227 i += sizeof(uint32_t);
3229 /* Read Tx statistics. */
3230 for (reg = &sb.tx_frames, i = 0; reg <= &sb.tx_mcast_bytes;
3232 *reg = CSR_READ_4(sc, ALC_TX_MIB_BASE + i);
3233 i += sizeof(uint32_t);
3238 stat->rx_frames += smb->rx_frames;
3239 stat->rx_bcast_frames += smb->rx_bcast_frames;
3240 stat->rx_mcast_frames += smb->rx_mcast_frames;
3241 stat->rx_pause_frames += smb->rx_pause_frames;
3242 stat->rx_control_frames += smb->rx_control_frames;
3243 stat->rx_crcerrs += smb->rx_crcerrs;
3244 stat->rx_lenerrs += smb->rx_lenerrs;
3245 stat->rx_bytes += smb->rx_bytes;
3246 stat->rx_runts += smb->rx_runts;
3247 stat->rx_fragments += smb->rx_fragments;
3248 stat->rx_pkts_64 += smb->rx_pkts_64;
3249 stat->rx_pkts_65_127 += smb->rx_pkts_65_127;
3250 stat->rx_pkts_128_255 += smb->rx_pkts_128_255;
3251 stat->rx_pkts_256_511 += smb->rx_pkts_256_511;
3252 stat->rx_pkts_512_1023 += smb->rx_pkts_512_1023;
3253 stat->rx_pkts_1024_1518 += smb->rx_pkts_1024_1518;
3254 stat->rx_pkts_1519_max += smb->rx_pkts_1519_max;
3255 stat->rx_pkts_truncated += smb->rx_pkts_truncated;
3256 stat->rx_fifo_oflows += smb->rx_fifo_oflows;
3257 stat->rx_rrs_errs += smb->rx_rrs_errs;
3258 stat->rx_alignerrs += smb->rx_alignerrs;
3259 stat->rx_bcast_bytes += smb->rx_bcast_bytes;
3260 stat->rx_mcast_bytes += smb->rx_mcast_bytes;
3261 stat->rx_pkts_filtered += smb->rx_pkts_filtered;
3264 stat->tx_frames += smb->tx_frames;
3265 stat->tx_bcast_frames += smb->tx_bcast_frames;
3266 stat->tx_mcast_frames += smb->tx_mcast_frames;
3267 stat->tx_pause_frames += smb->tx_pause_frames;
3268 stat->tx_excess_defer += smb->tx_excess_defer;
3269 stat->tx_control_frames += smb->tx_control_frames;
3270 stat->tx_deferred += smb->tx_deferred;
3271 stat->tx_bytes += smb->tx_bytes;
3272 stat->tx_pkts_64 += smb->tx_pkts_64;
3273 stat->tx_pkts_65_127 += smb->tx_pkts_65_127;
3274 stat->tx_pkts_128_255 += smb->tx_pkts_128_255;
3275 stat->tx_pkts_256_511 += smb->tx_pkts_256_511;
3276 stat->tx_pkts_512_1023 += smb->tx_pkts_512_1023;
3277 stat->tx_pkts_1024_1518 += smb->tx_pkts_1024_1518;
3278 stat->tx_pkts_1519_max += smb->tx_pkts_1519_max;
3279 stat->tx_single_colls += smb->tx_single_colls;
3280 stat->tx_multi_colls += smb->tx_multi_colls;
3281 stat->tx_late_colls += smb->tx_late_colls;
3282 stat->tx_excess_colls += smb->tx_excess_colls;
3283 stat->tx_underrun += smb->tx_underrun;
3284 stat->tx_desc_underrun += smb->tx_desc_underrun;
3285 stat->tx_lenerrs += smb->tx_lenerrs;
3286 stat->tx_pkts_truncated += smb->tx_pkts_truncated;
3287 stat->tx_bcast_bytes += smb->tx_bcast_bytes;
3288 stat->tx_mcast_bytes += smb->tx_mcast_bytes;
3290 /* Update counters in ifnet. */
3291 if_inc_counter(ifp, IFCOUNTER_OPACKETS, smb->tx_frames);
3293 if_inc_counter(ifp, IFCOUNTER_COLLISIONS, smb->tx_single_colls +
3294 smb->tx_multi_colls * 2 + smb->tx_late_colls +
3295 smb->tx_excess_colls * HDPX_CFG_RETRY_DEFAULT);
3297 if_inc_counter(ifp, IFCOUNTER_OERRORS, smb->tx_late_colls +
3298 smb->tx_excess_colls + smb->tx_underrun + smb->tx_pkts_truncated);
3300 if_inc_counter(ifp, IFCOUNTER_IPACKETS, smb->rx_frames);
3302 if_inc_counter(ifp, IFCOUNTER_IERRORS,
3303 smb->rx_crcerrs + smb->rx_lenerrs +
3304 smb->rx_runts + smb->rx_pkts_truncated +
3305 smb->rx_fifo_oflows + smb->rx_rrs_errs +
3308 if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0) {
3309 /* Update done, clear. */
3311 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag,
3312 sc->alc_cdata.alc_smb_map,
3313 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
3320 struct alc_softc *sc;
3323 sc = (struct alc_softc *)arg;
3325 status = CSR_READ_4(sc, ALC_INTR_STATUS);
3326 if ((status & ALC_INTRS) == 0)
3327 return (FILTER_STRAY);
3328 /* Disable interrupts. */
3329 CSR_WRITE_4(sc, ALC_INTR_STATUS, INTR_DIS_INT);
3330 taskqueue_enqueue(sc->alc_tq, &sc->alc_int_task);
3332 return (FILTER_HANDLED);
3336 alc_int_task(void *arg, int pending)
3338 struct alc_softc *sc;
3343 sc = (struct alc_softc *)arg;
3346 status = CSR_READ_4(sc, ALC_INTR_STATUS);
3348 if (sc->alc_morework != 0) {
3349 sc->alc_morework = 0;
3350 status |= INTR_RX_PKT;
3352 if ((status & ALC_INTRS) == 0)
3355 /* Acknowledge interrupts but still disable interrupts. */
3356 CSR_WRITE_4(sc, ALC_INTR_STATUS, status | INTR_DIS_INT);
3359 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) {
3360 if ((status & INTR_RX_PKT) != 0) {
3361 more = alc_rxintr(sc, sc->alc_process_limit);
3363 sc->alc_morework = 1;
3364 else if (more == EIO) {
3365 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
3366 alc_init_locked(sc);
3371 if ((status & (INTR_DMA_RD_TO_RST | INTR_DMA_WR_TO_RST |
3372 INTR_TXQ_TO_RST)) != 0) {
3373 if ((status & INTR_DMA_RD_TO_RST) != 0)
3374 device_printf(sc->alc_dev,
3375 "DMA read error! -- resetting\n");
3376 if ((status & INTR_DMA_WR_TO_RST) != 0)
3377 device_printf(sc->alc_dev,
3378 "DMA write error! -- resetting\n");
3379 if ((status & INTR_TXQ_TO_RST) != 0)
3380 device_printf(sc->alc_dev,
3381 "TxQ reset! -- resetting\n");
3382 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
3383 alc_init_locked(sc);
3387 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0 &&
3388 !IFQ_DRV_IS_EMPTY(&ifp->if_snd))
3389 alc_start_locked(ifp);
3392 if (more == EAGAIN ||
3393 (CSR_READ_4(sc, ALC_INTR_STATUS) & ALC_INTRS) != 0) {
3395 taskqueue_enqueue(sc->alc_tq, &sc->alc_int_task);
3400 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) {
3401 /* Re-enable interrupts if we're running. */
3402 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0x7FFFFFFF);
3408 alc_txeof(struct alc_softc *sc)
3411 struct alc_txdesc *txd;
3412 uint32_t cons, prod;
3415 ALC_LOCK_ASSERT(sc);
3419 if (sc->alc_cdata.alc_tx_cnt == 0)
3421 bus_dmamap_sync(sc->alc_cdata.alc_tx_ring_tag,
3422 sc->alc_cdata.alc_tx_ring_map, BUS_DMASYNC_POSTWRITE);
3423 if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0) {
3424 bus_dmamap_sync(sc->alc_cdata.alc_cmb_tag,
3425 sc->alc_cdata.alc_cmb_map, BUS_DMASYNC_POSTREAD);
3426 prod = sc->alc_rdata.alc_cmb->cons;
3428 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
3429 prod = CSR_READ_2(sc, ALC_MBOX_TD_PRI0_CONS_IDX);
3431 prod = CSR_READ_4(sc, ALC_MBOX_TD_CONS_IDX);
3432 /* Assume we're using normal Tx priority queue. */
3433 prod = (prod & MBOX_TD_CONS_LO_IDX_MASK) >>
3434 MBOX_TD_CONS_LO_IDX_SHIFT;
3437 cons = sc->alc_cdata.alc_tx_cons;
3439 * Go through our Tx list and free mbufs for those
3440 * frames which have been transmitted.
3442 for (prog = 0; cons != prod; prog++,
3443 ALC_DESC_INC(cons, ALC_TX_RING_CNT)) {
3444 if (sc->alc_cdata.alc_tx_cnt <= 0)
3447 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
3448 sc->alc_cdata.alc_tx_cnt--;
3449 txd = &sc->alc_cdata.alc_txdesc[cons];
3450 if (txd->tx_m != NULL) {
3451 /* Reclaim transmitted mbufs. */
3452 bus_dmamap_sync(sc->alc_cdata.alc_tx_tag,
3453 txd->tx_dmamap, BUS_DMASYNC_POSTWRITE);
3454 bus_dmamap_unload(sc->alc_cdata.alc_tx_tag,
3461 if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0)
3462 bus_dmamap_sync(sc->alc_cdata.alc_cmb_tag,
3463 sc->alc_cdata.alc_cmb_map, BUS_DMASYNC_PREREAD);
3464 sc->alc_cdata.alc_tx_cons = cons;
3466 * Unarm watchdog timer only when there is no pending
3467 * frames in Tx queue.
3469 if (sc->alc_cdata.alc_tx_cnt == 0)
3470 sc->alc_watchdog_timer = 0;
3474 alc_newbuf(struct alc_softc *sc, struct alc_rxdesc *rxd)
3477 bus_dma_segment_t segs[1];
3481 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
3484 m->m_len = m->m_pkthdr.len = RX_BUF_SIZE_MAX;
3485 #ifndef __NO_STRICT_ALIGNMENT
3486 m_adj(m, sizeof(uint64_t));
3489 if (bus_dmamap_load_mbuf_sg(sc->alc_cdata.alc_rx_tag,
3490 sc->alc_cdata.alc_rx_sparemap, m, segs, &nsegs, 0) != 0) {
3494 KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs));
3496 if (rxd->rx_m != NULL) {
3497 bus_dmamap_sync(sc->alc_cdata.alc_rx_tag, rxd->rx_dmamap,
3498 BUS_DMASYNC_POSTREAD);
3499 bus_dmamap_unload(sc->alc_cdata.alc_rx_tag, rxd->rx_dmamap);
3501 map = rxd->rx_dmamap;
3502 rxd->rx_dmamap = sc->alc_cdata.alc_rx_sparemap;
3503 sc->alc_cdata.alc_rx_sparemap = map;
3504 bus_dmamap_sync(sc->alc_cdata.alc_rx_tag, rxd->rx_dmamap,
3505 BUS_DMASYNC_PREREAD);
3507 rxd->rx_desc->addr = htole64(segs[0].ds_addr);
3512 alc_rxintr(struct alc_softc *sc, int count)
3515 struct rx_rdesc *rrd;
3516 uint32_t nsegs, status;
3519 bus_dmamap_sync(sc->alc_cdata.alc_rr_ring_tag,
3520 sc->alc_cdata.alc_rr_ring_map,
3521 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
3522 bus_dmamap_sync(sc->alc_cdata.alc_rx_ring_tag,
3523 sc->alc_cdata.alc_rx_ring_map, BUS_DMASYNC_POSTWRITE);
3524 rr_cons = sc->alc_cdata.alc_rr_cons;
3526 for (prog = 0; (ifp->if_drv_flags & IFF_DRV_RUNNING) != 0;) {
3529 rrd = &sc->alc_rdata.alc_rr_ring[rr_cons];
3530 status = le32toh(rrd->status);
3531 if ((status & RRD_VALID) == 0)
3533 nsegs = RRD_RD_CNT(le32toh(rrd->rdinfo));
3535 /* This should not happen! */
3536 device_printf(sc->alc_dev,
3537 "unexpected segment count -- resetting\n");
3541 /* Clear Rx return status. */
3543 ALC_DESC_INC(rr_cons, ALC_RR_RING_CNT);
3544 sc->alc_cdata.alc_rx_cons += nsegs;
3545 sc->alc_cdata.alc_rx_cons %= ALC_RR_RING_CNT;
3550 /* Update the consumer index. */
3551 sc->alc_cdata.alc_rr_cons = rr_cons;
3552 /* Sync Rx return descriptors. */
3553 bus_dmamap_sync(sc->alc_cdata.alc_rr_ring_tag,
3554 sc->alc_cdata.alc_rr_ring_map,
3555 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
3557 * Sync updated Rx descriptors such that controller see
3558 * modified buffer addresses.
3560 bus_dmamap_sync(sc->alc_cdata.alc_rx_ring_tag,
3561 sc->alc_cdata.alc_rx_ring_map, BUS_DMASYNC_PREWRITE);
3563 * Let controller know availability of new Rx buffers.
3564 * Since alc(4) use RXQ_CFG_RD_BURST_DEFAULT descriptors
3565 * it may be possible to update ALC_MBOX_RD0_PROD_IDX
3566 * only when Rx buffer pre-fetching is required. In
3567 * addition we already set ALC_RX_RD_FREE_THRESH to
3568 * RX_RD_FREE_THRESH_LO_DEFAULT descriptors. However
3569 * it still seems that pre-fetching needs more
3572 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
3573 CSR_WRITE_2(sc, ALC_MBOX_RD0_PROD_IDX,
3574 (uint16_t)sc->alc_cdata.alc_rx_cons);
3576 CSR_WRITE_4(sc, ALC_MBOX_RD0_PROD_IDX,
3577 sc->alc_cdata.alc_rx_cons);
3580 return (count > 0 ? 0 : EAGAIN);
3583 #ifndef __NO_STRICT_ALIGNMENT
3584 static struct mbuf *
3585 alc_fixup_rx(struct ifnet *ifp, struct mbuf *m)
3589 uint16_t *src, *dst;
3591 src = mtod(m, uint16_t *);
3594 if (m->m_next == NULL) {
3595 for (i = 0; i < (m->m_len / sizeof(uint16_t) + 1); i++)
3601 * Append a new mbuf to received mbuf chain and copy ethernet
3602 * header from the mbuf chain. This can save lots of CPU
3603 * cycles for jumbo frame.
3605 MGETHDR(n, M_NOWAIT, MT_DATA);
3607 if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1);
3611 bcopy(m->m_data, n->m_data, ETHER_HDR_LEN);
3612 m->m_data += ETHER_HDR_LEN;
3613 m->m_len -= ETHER_HDR_LEN;
3614 n->m_len = ETHER_HDR_LEN;
3615 M_MOVE_PKTHDR(n, m);
3621 /* Receive a frame. */
3623 alc_rxeof(struct alc_softc *sc, struct rx_rdesc *rrd)
3625 struct alc_rxdesc *rxd;
3627 struct mbuf *mp, *m;
3628 uint32_t rdinfo, status, vtag;
3629 int count, nsegs, rx_cons;
3632 status = le32toh(rrd->status);
3633 rdinfo = le32toh(rrd->rdinfo);
3634 rx_cons = RRD_RD_IDX(rdinfo);
3635 nsegs = RRD_RD_CNT(rdinfo);
3637 sc->alc_cdata.alc_rxlen = RRD_BYTES(status);
3638 if ((status & (RRD_ERR_SUM | RRD_ERR_LENGTH)) != 0) {
3640 * We want to pass the following frames to upper
3641 * layer regardless of error status of Rx return
3644 * o IP/TCP/UDP checksum is bad.
3645 * o frame length and protocol specific length
3648 * Force network stack compute checksum for
3651 status |= RRD_TCP_UDPCSUM_NOK | RRD_IPCSUM_NOK;
3652 if ((status & (RRD_ERR_CRC | RRD_ERR_ALIGN |
3653 RRD_ERR_TRUNC | RRD_ERR_RUNT)) != 0)
3657 for (count = 0; count < nsegs; count++,
3658 ALC_DESC_INC(rx_cons, ALC_RX_RING_CNT)) {
3659 rxd = &sc->alc_cdata.alc_rxdesc[rx_cons];
3661 /* Add a new receive buffer to the ring. */
3662 if (alc_newbuf(sc, rxd) != 0) {
3663 if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1);
3664 /* Reuse Rx buffers. */
3665 if (sc->alc_cdata.alc_rxhead != NULL)
3666 m_freem(sc->alc_cdata.alc_rxhead);
3671 * Assume we've received a full sized frame.
3672 * Actual size is fixed when we encounter the end of
3673 * multi-segmented frame.
3675 mp->m_len = sc->alc_buf_size;
3677 /* Chain received mbufs. */
3678 if (sc->alc_cdata.alc_rxhead == NULL) {
3679 sc->alc_cdata.alc_rxhead = mp;
3680 sc->alc_cdata.alc_rxtail = mp;
3682 mp->m_flags &= ~M_PKTHDR;
3683 sc->alc_cdata.alc_rxprev_tail =
3684 sc->alc_cdata.alc_rxtail;
3685 sc->alc_cdata.alc_rxtail->m_next = mp;
3686 sc->alc_cdata.alc_rxtail = mp;
3689 if (count == nsegs - 1) {
3690 /* Last desc. for this frame. */
3691 m = sc->alc_cdata.alc_rxhead;
3692 m->m_flags |= M_PKTHDR;
3694 * It seems that L1C/L2C controller has no way
3695 * to tell hardware to strip CRC bytes.
3698 sc->alc_cdata.alc_rxlen - ETHER_CRC_LEN;
3700 /* Set last mbuf size. */
3701 mp->m_len = sc->alc_cdata.alc_rxlen -
3702 (nsegs - 1) * sc->alc_buf_size;
3703 /* Remove the CRC bytes in chained mbufs. */
3704 if (mp->m_len <= ETHER_CRC_LEN) {
3705 sc->alc_cdata.alc_rxtail =
3706 sc->alc_cdata.alc_rxprev_tail;
3707 sc->alc_cdata.alc_rxtail->m_len -=
3708 (ETHER_CRC_LEN - mp->m_len);
3709 sc->alc_cdata.alc_rxtail->m_next = NULL;
3712 mp->m_len -= ETHER_CRC_LEN;
3715 m->m_len = m->m_pkthdr.len;
3716 m->m_pkthdr.rcvif = ifp;
3718 * Due to hardware bugs, Rx checksum offloading
3719 * was intentionally disabled.
3721 if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) != 0 &&
3722 (status & RRD_VLAN_TAG) != 0) {
3723 vtag = RRD_VLAN(le32toh(rrd->vtag));
3724 m->m_pkthdr.ether_vtag = ntohs(vtag);
3725 m->m_flags |= M_VLANTAG;
3727 #ifndef __NO_STRICT_ALIGNMENT
3728 m = alc_fixup_rx(ifp, m);
3734 (*ifp->if_input)(ifp, m);
3739 /* Reset mbuf chains. */
3740 ALC_RXCHAIN_RESET(sc);
3746 struct alc_softc *sc;
3747 struct mii_data *mii;
3749 sc = (struct alc_softc *)arg;
3751 ALC_LOCK_ASSERT(sc);
3753 mii = device_get_softc(sc->alc_miibus);
3755 alc_stats_update(sc);
3757 * alc(4) does not rely on Tx completion interrupts to reclaim
3758 * transferred buffers. Instead Tx completion interrupts are
3759 * used to hint for scheduling Tx task. So it's necessary to
3760 * release transmitted buffers by kicking Tx completion
3761 * handler. This limits the maximum reclamation delay to a hz.
3765 callout_reset(&sc->alc_tick_ch, hz, alc_tick, sc);
3769 alc_osc_reset(struct alc_softc *sc)
3773 reg = CSR_READ_4(sc, ALC_MISC3);
3774 reg &= ~MISC3_25M_BY_SW;
3775 reg |= MISC3_25M_NOTO_INTNL;
3776 CSR_WRITE_4(sc, ALC_MISC3, reg);
3778 reg = CSR_READ_4(sc, ALC_MISC);
3779 if (AR816X_REV(sc->alc_rev) >= AR816X_REV_B0) {
3781 * Restore over-current protection default value.
3782 * This value could be reset by MAC reset.
3784 reg &= ~MISC_PSW_OCP_MASK;
3785 reg |= (MISC_PSW_OCP_DEFAULT << MISC_PSW_OCP_SHIFT);
3786 reg &= ~MISC_INTNLOSC_OPEN;
3787 CSR_WRITE_4(sc, ALC_MISC, reg);
3788 CSR_WRITE_4(sc, ALC_MISC, reg | MISC_INTNLOSC_OPEN);
3789 reg = CSR_READ_4(sc, ALC_MISC2);
3790 reg &= ~MISC2_CALB_START;
3791 CSR_WRITE_4(sc, ALC_MISC2, reg);
3792 CSR_WRITE_4(sc, ALC_MISC2, reg | MISC2_CALB_START);
3795 reg &= ~MISC_INTNLOSC_OPEN;
3796 /* Disable isolate for revision A devices. */
3797 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1)
3798 reg &= ~MISC_ISO_ENB;
3799 CSR_WRITE_4(sc, ALC_MISC, reg | MISC_INTNLOSC_OPEN);
3800 CSR_WRITE_4(sc, ALC_MISC, reg);
3807 alc_reset(struct alc_softc *sc)
3809 uint32_t pmcfg, reg;
3813 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
3814 /* Reset workaround. */
3815 CSR_WRITE_4(sc, ALC_MBOX_RD0_PROD_IDX, 1);
3816 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1 &&
3817 (sc->alc_rev & 0x01) != 0) {
3818 /* Disable L0s/L1s before reset. */
3819 pmcfg = CSR_READ_4(sc, ALC_PM_CFG);
3820 if ((pmcfg & (PM_CFG_ASPM_L0S_ENB | PM_CFG_ASPM_L1_ENB))
3822 pmcfg &= ~(PM_CFG_ASPM_L0S_ENB |
3823 PM_CFG_ASPM_L1_ENB);
3824 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg);
3828 reg = CSR_READ_4(sc, ALC_MASTER_CFG);
3829 reg |= MASTER_OOB_DIS_OFF | MASTER_RESET;
3830 CSR_WRITE_4(sc, ALC_MASTER_CFG, reg);
3832 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
3833 for (i = ALC_RESET_TIMEOUT; i > 0; i--) {
3835 if (CSR_READ_4(sc, ALC_MBOX_RD0_PROD_IDX) == 0)
3839 device_printf(sc->alc_dev, "MAC reset timeout!\n");
3841 for (i = ALC_RESET_TIMEOUT; i > 0; i--) {
3843 if ((CSR_READ_4(sc, ALC_MASTER_CFG) & MASTER_RESET) == 0)
3847 device_printf(sc->alc_dev, "master reset timeout!\n");
3849 for (i = ALC_RESET_TIMEOUT; i > 0; i--) {
3850 reg = CSR_READ_4(sc, ALC_IDLE_STATUS);
3851 if ((reg & (IDLE_STATUS_RXMAC | IDLE_STATUS_TXMAC |
3852 IDLE_STATUS_RXQ | IDLE_STATUS_TXQ)) == 0)
3857 device_printf(sc->alc_dev, "reset timeout(0x%08x)!\n", reg);
3859 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
3860 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1 &&
3861 (sc->alc_rev & 0x01) != 0) {
3862 reg = CSR_READ_4(sc, ALC_MASTER_CFG);
3863 reg |= MASTER_CLK_SEL_DIS;
3864 CSR_WRITE_4(sc, ALC_MASTER_CFG, reg);
3865 /* Restore L0s/L1s config. */
3866 if ((pmcfg & (PM_CFG_ASPM_L0S_ENB | PM_CFG_ASPM_L1_ENB))
3868 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg);
3872 reg = CSR_READ_4(sc, ALC_MISC3);
3873 reg &= ~MISC3_25M_BY_SW;
3874 reg |= MISC3_25M_NOTO_INTNL;
3875 CSR_WRITE_4(sc, ALC_MISC3, reg);
3876 reg = CSR_READ_4(sc, ALC_MISC);
3877 reg &= ~MISC_INTNLOSC_OPEN;
3878 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1)
3879 reg &= ~MISC_ISO_ENB;
3880 CSR_WRITE_4(sc, ALC_MISC, reg);
3883 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0 ||
3884 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B ||
3885 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2)
3886 CSR_WRITE_4(sc, ALC_SERDES_LOCK,
3887 CSR_READ_4(sc, ALC_SERDES_LOCK) | SERDES_MAC_CLK_SLOWDOWN |
3888 SERDES_PHY_CLK_SLOWDOWN);
3894 struct alc_softc *sc;
3896 sc = (struct alc_softc *)xsc;
3898 alc_init_locked(sc);
3903 alc_init_locked(struct alc_softc *sc)
3906 struct mii_data *mii;
3907 uint8_t eaddr[ETHER_ADDR_LEN];
3909 uint32_t reg, rxf_hi, rxf_lo;
3911 ALC_LOCK_ASSERT(sc);
3914 mii = device_get_softc(sc->alc_miibus);
3916 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
3919 * Cancel any pending I/O.
3923 * Reset the chip to a known state.
3927 /* Initialize Rx descriptors. */
3928 if (alc_init_rx_ring(sc) != 0) {
3929 device_printf(sc->alc_dev, "no memory for Rx buffers.\n");
3933 alc_init_rr_ring(sc);
3934 alc_init_tx_ring(sc);
3938 /* Enable all clocks. */
3939 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
3940 CSR_WRITE_4(sc, ALC_CLK_GATING_CFG, CLK_GATING_DMAW_ENB |
3941 CLK_GATING_DMAR_ENB | CLK_GATING_TXQ_ENB |
3942 CLK_GATING_RXQ_ENB | CLK_GATING_TXMAC_ENB |
3943 CLK_GATING_RXMAC_ENB);
3944 if (AR816X_REV(sc->alc_rev) >= AR816X_REV_B0)
3945 CSR_WRITE_4(sc, ALC_IDLE_DECISN_TIMER,
3946 IDLE_DECISN_TIMER_DEFAULT_1MS);
3948 CSR_WRITE_4(sc, ALC_CLK_GATING_CFG, 0);
3950 /* Reprogram the station address. */
3951 bcopy(IF_LLADDR(ifp), eaddr, ETHER_ADDR_LEN);
3952 CSR_WRITE_4(sc, ALC_PAR0,
3953 eaddr[2] << 24 | eaddr[3] << 16 | eaddr[4] << 8 | eaddr[5]);
3954 CSR_WRITE_4(sc, ALC_PAR1, eaddr[0] << 8 | eaddr[1]);
3956 * Clear WOL status and disable all WOL feature as WOL
3957 * would interfere Rx operation under normal environments.
3959 CSR_READ_4(sc, ALC_WOL_CFG);
3960 CSR_WRITE_4(sc, ALC_WOL_CFG, 0);
3961 /* Set Tx descriptor base addresses. */
3962 paddr = sc->alc_rdata.alc_tx_ring_paddr;
3963 CSR_WRITE_4(sc, ALC_TX_BASE_ADDR_HI, ALC_ADDR_HI(paddr));
3964 CSR_WRITE_4(sc, ALC_TDL_HEAD_ADDR_LO, ALC_ADDR_LO(paddr));
3965 /* We don't use high priority ring. */
3966 CSR_WRITE_4(sc, ALC_TDH_HEAD_ADDR_LO, 0);
3967 /* Set Tx descriptor counter. */
3968 CSR_WRITE_4(sc, ALC_TD_RING_CNT,
3969 (ALC_TX_RING_CNT << TD_RING_CNT_SHIFT) & TD_RING_CNT_MASK);
3970 /* Set Rx descriptor base addresses. */
3971 paddr = sc->alc_rdata.alc_rx_ring_paddr;
3972 CSR_WRITE_4(sc, ALC_RX_BASE_ADDR_HI, ALC_ADDR_HI(paddr));
3973 CSR_WRITE_4(sc, ALC_RD0_HEAD_ADDR_LO, ALC_ADDR_LO(paddr));
3974 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
3975 /* We use one Rx ring. */
3976 CSR_WRITE_4(sc, ALC_RD1_HEAD_ADDR_LO, 0);
3977 CSR_WRITE_4(sc, ALC_RD2_HEAD_ADDR_LO, 0);
3978 CSR_WRITE_4(sc, ALC_RD3_HEAD_ADDR_LO, 0);
3980 /* Set Rx descriptor counter. */
3981 CSR_WRITE_4(sc, ALC_RD_RING_CNT,
3982 (ALC_RX_RING_CNT << RD_RING_CNT_SHIFT) & RD_RING_CNT_MASK);
3985 * Let hardware split jumbo frames into alc_max_buf_sized chunks.
3986 * if it do not fit the buffer size. Rx return descriptor holds
3987 * a counter that indicates how many fragments were made by the
3988 * hardware. The buffer size should be multiple of 8 bytes.
3989 * Since hardware has limit on the size of buffer size, always
3990 * use the maximum value.
3991 * For strict-alignment architectures make sure to reduce buffer
3992 * size by 8 bytes to make room for alignment fixup.
3994 #ifndef __NO_STRICT_ALIGNMENT
3995 sc->alc_buf_size = RX_BUF_SIZE_MAX - sizeof(uint64_t);
3997 sc->alc_buf_size = RX_BUF_SIZE_MAX;
3999 CSR_WRITE_4(sc, ALC_RX_BUF_SIZE, sc->alc_buf_size);
4001 paddr = sc->alc_rdata.alc_rr_ring_paddr;
4002 /* Set Rx return descriptor base addresses. */
4003 CSR_WRITE_4(sc, ALC_RRD0_HEAD_ADDR_LO, ALC_ADDR_LO(paddr));
4004 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
4005 /* We use one Rx return ring. */
4006 CSR_WRITE_4(sc, ALC_RRD1_HEAD_ADDR_LO, 0);
4007 CSR_WRITE_4(sc, ALC_RRD2_HEAD_ADDR_LO, 0);
4008 CSR_WRITE_4(sc, ALC_RRD3_HEAD_ADDR_LO, 0);
4010 /* Set Rx return descriptor counter. */
4011 CSR_WRITE_4(sc, ALC_RRD_RING_CNT,
4012 (ALC_RR_RING_CNT << RRD_RING_CNT_SHIFT) & RRD_RING_CNT_MASK);
4013 paddr = sc->alc_rdata.alc_cmb_paddr;
4014 CSR_WRITE_4(sc, ALC_CMB_BASE_ADDR_LO, ALC_ADDR_LO(paddr));
4015 paddr = sc->alc_rdata.alc_smb_paddr;
4016 CSR_WRITE_4(sc, ALC_SMB_BASE_ADDR_HI, ALC_ADDR_HI(paddr));
4017 CSR_WRITE_4(sc, ALC_SMB_BASE_ADDR_LO, ALC_ADDR_LO(paddr));
4019 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B) {
4020 /* Reconfigure SRAM - Vendor magic. */
4021 CSR_WRITE_4(sc, ALC_SRAM_RX_FIFO_LEN, 0x000002A0);
4022 CSR_WRITE_4(sc, ALC_SRAM_TX_FIFO_LEN, 0x00000100);
4023 CSR_WRITE_4(sc, ALC_SRAM_RX_FIFO_ADDR, 0x029F0000);
4024 CSR_WRITE_4(sc, ALC_SRAM_RD0_ADDR, 0x02BF02A0);
4025 CSR_WRITE_4(sc, ALC_SRAM_TX_FIFO_ADDR, 0x03BF02C0);
4026 CSR_WRITE_4(sc, ALC_SRAM_TD_ADDR, 0x03DF03C0);
4027 CSR_WRITE_4(sc, ALC_TXF_WATER_MARK, 0x00000000);
4028 CSR_WRITE_4(sc, ALC_RD_DMA_CFG, 0x00000000);
4031 /* Tell hardware that we're ready to load DMA blocks. */
4032 CSR_WRITE_4(sc, ALC_DMA_BLOCK, DMA_BLOCK_LOAD);
4034 /* Configure interrupt moderation timer. */
4035 reg = ALC_USECS(sc->alc_int_rx_mod) << IM_TIMER_RX_SHIFT;
4036 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0)
4037 reg |= ALC_USECS(sc->alc_int_tx_mod) << IM_TIMER_TX_SHIFT;
4038 CSR_WRITE_4(sc, ALC_IM_TIMER, reg);
4040 * We don't want to automatic interrupt clear as task queue
4041 * for the interrupt should know interrupt status.
4043 reg = CSR_READ_4(sc, ALC_MASTER_CFG);
4044 reg &= ~(MASTER_IM_RX_TIMER_ENB | MASTER_IM_TX_TIMER_ENB);
4045 reg |= MASTER_SA_TIMER_ENB;
4046 if (ALC_USECS(sc->alc_int_rx_mod) != 0)
4047 reg |= MASTER_IM_RX_TIMER_ENB;
4048 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0 &&
4049 ALC_USECS(sc->alc_int_tx_mod) != 0)
4050 reg |= MASTER_IM_TX_TIMER_ENB;
4051 CSR_WRITE_4(sc, ALC_MASTER_CFG, reg);
4053 * Disable interrupt re-trigger timer. We don't want automatic
4054 * re-triggering of un-ACKed interrupts.
4056 CSR_WRITE_4(sc, ALC_INTR_RETRIG_TIMER, ALC_USECS(0));
4057 /* Configure CMB. */
4058 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
4059 CSR_WRITE_4(sc, ALC_CMB_TD_THRESH, ALC_TX_RING_CNT / 3);
4060 CSR_WRITE_4(sc, ALC_CMB_TX_TIMER,
4061 ALC_USECS(sc->alc_int_tx_mod));
4063 if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0) {
4064 CSR_WRITE_4(sc, ALC_CMB_TD_THRESH, 4);
4065 CSR_WRITE_4(sc, ALC_CMB_TX_TIMER, ALC_USECS(5000));
4067 CSR_WRITE_4(sc, ALC_CMB_TX_TIMER, ALC_USECS(0));
4070 * Hardware can be configured to issue SMB interrupt based
4071 * on programmed interval. Since there is a callout that is
4072 * invoked for every hz in driver we use that instead of
4073 * relying on periodic SMB interrupt.
4075 CSR_WRITE_4(sc, ALC_SMB_STAT_TIMER, ALC_USECS(0));
4076 /* Clear MAC statistics. */
4077 alc_stats_clear(sc);
4080 * Always use maximum frame size that controller can support.
4081 * Otherwise received frames that has larger frame length
4082 * than alc(4) MTU would be silently dropped in hardware. This
4083 * would make path-MTU discovery hard as sender wouldn't get
4084 * any responses from receiver. alc(4) supports
4085 * multi-fragmented frames on Rx path so it has no issue on
4086 * assembling fragmented frames. Using maximum frame size also
4087 * removes the need to reinitialize hardware when interface
4088 * MTU configuration was changed.
4090 * Be conservative in what you do, be liberal in what you
4091 * accept from others - RFC 793.
4093 CSR_WRITE_4(sc, ALC_FRAME_SIZE, sc->alc_ident->max_framelen);
4095 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
4096 /* Disable header split(?) */
4097 CSR_WRITE_4(sc, ALC_HDS_CFG, 0);
4099 /* Configure IPG/IFG parameters. */
4100 CSR_WRITE_4(sc, ALC_IPG_IFG_CFG,
4101 ((IPG_IFG_IPGT_DEFAULT << IPG_IFG_IPGT_SHIFT) &
4102 IPG_IFG_IPGT_MASK) |
4103 ((IPG_IFG_MIFG_DEFAULT << IPG_IFG_MIFG_SHIFT) &
4104 IPG_IFG_MIFG_MASK) |
4105 ((IPG_IFG_IPG1_DEFAULT << IPG_IFG_IPG1_SHIFT) &
4106 IPG_IFG_IPG1_MASK) |
4107 ((IPG_IFG_IPG2_DEFAULT << IPG_IFG_IPG2_SHIFT) &
4108 IPG_IFG_IPG2_MASK));
4109 /* Set parameters for half-duplex media. */
4110 CSR_WRITE_4(sc, ALC_HDPX_CFG,
4111 ((HDPX_CFG_LCOL_DEFAULT << HDPX_CFG_LCOL_SHIFT) &
4112 HDPX_CFG_LCOL_MASK) |
4113 ((HDPX_CFG_RETRY_DEFAULT << HDPX_CFG_RETRY_SHIFT) &
4114 HDPX_CFG_RETRY_MASK) | HDPX_CFG_EXC_DEF_EN |
4115 ((HDPX_CFG_ABEBT_DEFAULT << HDPX_CFG_ABEBT_SHIFT) &
4116 HDPX_CFG_ABEBT_MASK) |
4117 ((HDPX_CFG_JAMIPG_DEFAULT << HDPX_CFG_JAMIPG_SHIFT) &
4118 HDPX_CFG_JAMIPG_MASK));
4122 * Set TSO/checksum offload threshold. For frames that is
4123 * larger than this threshold, hardware wouldn't do
4124 * TSO/checksum offloading.
4126 reg = (sc->alc_ident->max_framelen >> TSO_OFFLOAD_THRESH_UNIT_SHIFT) &
4127 TSO_OFFLOAD_THRESH_MASK;
4128 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
4129 reg |= TSO_OFFLOAD_ERRLGPKT_DROP_ENB;
4130 CSR_WRITE_4(sc, ALC_TSO_OFFLOAD_THRESH, reg);
4131 /* Configure TxQ. */
4132 reg = (alc_dma_burst[sc->alc_dma_rd_burst] <<
4133 TXQ_CFG_TX_FIFO_BURST_SHIFT) & TXQ_CFG_TX_FIFO_BURST_MASK;
4134 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B ||
4135 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2)
4137 reg |= (TXQ_CFG_TD_BURST_DEFAULT << TXQ_CFG_TD_BURST_SHIFT) &
4138 TXQ_CFG_TD_BURST_MASK;
4139 reg |= TXQ_CFG_IP_OPTION_ENB | TXQ_CFG_8023_ENB;
4140 CSR_WRITE_4(sc, ALC_TXQ_CFG, reg | TXQ_CFG_ENHANCED_MODE);
4141 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
4142 reg = (TXQ_CFG_TD_BURST_DEFAULT << HQTD_CFG_Q1_BURST_SHIFT |
4143 TXQ_CFG_TD_BURST_DEFAULT << HQTD_CFG_Q2_BURST_SHIFT |
4144 TXQ_CFG_TD_BURST_DEFAULT << HQTD_CFG_Q3_BURST_SHIFT |
4145 HQTD_CFG_BURST_ENB);
4146 CSR_WRITE_4(sc, ALC_HQTD_CFG, reg);
4147 reg = WRR_PRI_RESTRICT_NONE;
4148 reg |= (WRR_PRI_DEFAULT << WRR_PRI0_SHIFT |
4149 WRR_PRI_DEFAULT << WRR_PRI1_SHIFT |
4150 WRR_PRI_DEFAULT << WRR_PRI2_SHIFT |
4151 WRR_PRI_DEFAULT << WRR_PRI3_SHIFT);
4152 CSR_WRITE_4(sc, ALC_WRR, reg);
4154 /* Configure Rx free descriptor pre-fetching. */
4155 CSR_WRITE_4(sc, ALC_RX_RD_FREE_THRESH,
4156 ((RX_RD_FREE_THRESH_HI_DEFAULT <<
4157 RX_RD_FREE_THRESH_HI_SHIFT) & RX_RD_FREE_THRESH_HI_MASK) |
4158 ((RX_RD_FREE_THRESH_LO_DEFAULT <<
4159 RX_RD_FREE_THRESH_LO_SHIFT) & RX_RD_FREE_THRESH_LO_MASK));
4163 * Configure flow control parameters.
4164 * XON : 80% of Rx FIFO
4165 * XOFF : 30% of Rx FIFO
4167 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
4168 reg = CSR_READ_4(sc, ALC_SRAM_RX_FIFO_LEN);
4169 reg &= SRAM_RX_FIFO_LEN_MASK;
4172 reg -= RX_FIFO_PAUSE_816X_RSVD;
4174 reg -= RX_BUF_SIZE_MAX;
4176 CSR_WRITE_4(sc, ALC_RX_FIFO_PAUSE_THRESH,
4177 ((reg << RX_FIFO_PAUSE_THRESH_LO_SHIFT) &
4178 RX_FIFO_PAUSE_THRESH_LO_MASK) |
4179 (((RX_FIFO_PAUSE_816X_RSVD / 8) <<
4180 RX_FIFO_PAUSE_THRESH_HI_SHIFT) &
4181 RX_FIFO_PAUSE_THRESH_HI_MASK));
4182 } else if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8131 ||
4183 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8132) {
4184 reg = CSR_READ_4(sc, ALC_SRAM_RX_FIFO_LEN);
4185 rxf_hi = (reg * 8) / 10;
4186 rxf_lo = (reg * 3) / 10;
4187 CSR_WRITE_4(sc, ALC_RX_FIFO_PAUSE_THRESH,
4188 ((rxf_lo << RX_FIFO_PAUSE_THRESH_LO_SHIFT) &
4189 RX_FIFO_PAUSE_THRESH_LO_MASK) |
4190 ((rxf_hi << RX_FIFO_PAUSE_THRESH_HI_SHIFT) &
4191 RX_FIFO_PAUSE_THRESH_HI_MASK));
4194 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
4195 /* Disable RSS until I understand L1C/L2C's RSS logic. */
4196 CSR_WRITE_4(sc, ALC_RSS_IDT_TABLE0, 0);
4197 CSR_WRITE_4(sc, ALC_RSS_CPU, 0);
4200 /* Configure RxQ. */
4201 reg = (RXQ_CFG_RD_BURST_DEFAULT << RXQ_CFG_RD_BURST_SHIFT) &
4202 RXQ_CFG_RD_BURST_MASK;
4203 reg |= RXQ_CFG_RSS_MODE_DIS;
4204 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
4205 reg |= (RXQ_CFG_816X_IDT_TBL_SIZE_DEFAULT <<
4206 RXQ_CFG_816X_IDT_TBL_SIZE_SHIFT) &
4207 RXQ_CFG_816X_IDT_TBL_SIZE_MASK;
4208 if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0)
4209 reg |= RXQ_CFG_ASPM_THROUGHPUT_LIMIT_100M;
4211 if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0 &&
4212 sc->alc_ident->deviceid != DEVICEID_ATHEROS_AR8151_V2)
4213 reg |= RXQ_CFG_ASPM_THROUGHPUT_LIMIT_100M;
4215 CSR_WRITE_4(sc, ALC_RXQ_CFG, reg);
4217 /* Configure DMA parameters. */
4218 reg = DMA_CFG_OUT_ORDER | DMA_CFG_RD_REQ_PRI;
4220 if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0)
4221 reg |= DMA_CFG_CMB_ENB;
4222 if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0)
4223 reg |= DMA_CFG_SMB_ENB;
4225 reg |= DMA_CFG_SMB_DIS;
4226 reg |= (sc->alc_dma_rd_burst & DMA_CFG_RD_BURST_MASK) <<
4227 DMA_CFG_RD_BURST_SHIFT;
4228 reg |= (sc->alc_dma_wr_burst & DMA_CFG_WR_BURST_MASK) <<
4229 DMA_CFG_WR_BURST_SHIFT;
4230 reg |= (DMA_CFG_RD_DELAY_CNT_DEFAULT << DMA_CFG_RD_DELAY_CNT_SHIFT) &
4231 DMA_CFG_RD_DELAY_CNT_MASK;
4232 reg |= (DMA_CFG_WR_DELAY_CNT_DEFAULT << DMA_CFG_WR_DELAY_CNT_SHIFT) &
4233 DMA_CFG_WR_DELAY_CNT_MASK;
4234 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
4235 switch (AR816X_REV(sc->alc_rev)) {
4238 reg |= DMA_CFG_RD_CHNL_SEL_2;
4243 reg |= DMA_CFG_RD_CHNL_SEL_4;
4247 CSR_WRITE_4(sc, ALC_DMA_CFG, reg);
4250 * Configure Tx/Rx MACs.
4251 * - Auto-padding for short frames.
4252 * - Enable CRC generation.
4253 * Actual reconfiguration of MAC for resolved speed/duplex
4254 * is followed after detection of link establishment.
4255 * AR813x/AR815x always does checksum computation regardless
4256 * of MAC_CFG_RXCSUM_ENB bit. Also the controller is known to
4257 * have bug in protocol field in Rx return structure so
4258 * these controllers can't handle fragmented frames. Disable
4259 * Rx checksum offloading until there is a newer controller
4260 * that has sane implementation.
4262 reg = MAC_CFG_TX_CRC_ENB | MAC_CFG_TX_AUTO_PAD | MAC_CFG_FULL_DUPLEX |
4263 ((MAC_CFG_PREAMBLE_DEFAULT << MAC_CFG_PREAMBLE_SHIFT) &
4264 MAC_CFG_PREAMBLE_MASK);
4265 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0 ||
4266 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151 ||
4267 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2 ||
4268 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2)
4269 reg |= MAC_CFG_HASH_ALG_CRC32 | MAC_CFG_SPEED_MODE_SW;
4270 if ((sc->alc_flags & ALC_FLAG_FASTETHER) != 0)
4271 reg |= MAC_CFG_SPEED_10_100;
4273 reg |= MAC_CFG_SPEED_1000;
4274 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
4276 /* Set up the receive filter. */
4280 /* Acknowledge all pending interrupts and clear it. */
4281 CSR_WRITE_4(sc, ALC_INTR_MASK, ALC_INTRS);
4282 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0xFFFFFFFF);
4283 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0);
4285 ifp->if_drv_flags |= IFF_DRV_RUNNING;
4286 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
4288 sc->alc_flags &= ~ALC_FLAG_LINK;
4289 /* Switch to the current media. */
4290 alc_mediachange_locked(sc);
4292 callout_reset(&sc->alc_tick_ch, hz, alc_tick, sc);
4296 alc_stop(struct alc_softc *sc)
4299 struct alc_txdesc *txd;
4300 struct alc_rxdesc *rxd;
4304 ALC_LOCK_ASSERT(sc);
4306 * Mark the interface down and cancel the watchdog timer.
4309 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
4310 sc->alc_flags &= ~ALC_FLAG_LINK;
4311 callout_stop(&sc->alc_tick_ch);
4312 sc->alc_watchdog_timer = 0;
4313 alc_stats_update(sc);
4314 /* Disable interrupts. */
4315 CSR_WRITE_4(sc, ALC_INTR_MASK, 0);
4316 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0xFFFFFFFF);
4318 reg = CSR_READ_4(sc, ALC_DMA_CFG);
4319 reg &= ~(DMA_CFG_CMB_ENB | DMA_CFG_SMB_ENB);
4320 reg |= DMA_CFG_SMB_DIS;
4321 CSR_WRITE_4(sc, ALC_DMA_CFG, reg);
4323 /* Stop Rx/Tx MACs. */
4325 /* Disable interrupts which might be touched in taskq handler. */
4326 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0xFFFFFFFF);
4327 /* Disable L0s/L1s */
4328 alc_aspm(sc, 0, IFM_UNKNOWN);
4329 /* Reclaim Rx buffers that have been processed. */
4330 if (sc->alc_cdata.alc_rxhead != NULL)
4331 m_freem(sc->alc_cdata.alc_rxhead);
4332 ALC_RXCHAIN_RESET(sc);
4334 * Free Tx/Rx mbufs still in the queues.
4336 for (i = 0; i < ALC_RX_RING_CNT; i++) {
4337 rxd = &sc->alc_cdata.alc_rxdesc[i];
4338 if (rxd->rx_m != NULL) {
4339 bus_dmamap_sync(sc->alc_cdata.alc_rx_tag,
4340 rxd->rx_dmamap, BUS_DMASYNC_POSTREAD);
4341 bus_dmamap_unload(sc->alc_cdata.alc_rx_tag,
4347 for (i = 0; i < ALC_TX_RING_CNT; i++) {
4348 txd = &sc->alc_cdata.alc_txdesc[i];
4349 if (txd->tx_m != NULL) {
4350 bus_dmamap_sync(sc->alc_cdata.alc_tx_tag,
4351 txd->tx_dmamap, BUS_DMASYNC_POSTWRITE);
4352 bus_dmamap_unload(sc->alc_cdata.alc_tx_tag,
4361 alc_stop_mac(struct alc_softc *sc)
4367 /* Disable Rx/Tx MAC. */
4368 reg = CSR_READ_4(sc, ALC_MAC_CFG);
4369 if ((reg & (MAC_CFG_TX_ENB | MAC_CFG_RX_ENB)) != 0) {
4370 reg &= ~(MAC_CFG_TX_ENB | MAC_CFG_RX_ENB);
4371 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
4373 for (i = ALC_TIMEOUT; i > 0; i--) {
4374 reg = CSR_READ_4(sc, ALC_IDLE_STATUS);
4375 if ((reg & (IDLE_STATUS_RXMAC | IDLE_STATUS_TXMAC)) == 0)
4380 device_printf(sc->alc_dev,
4381 "could not disable Rx/Tx MAC(0x%08x)!\n", reg);
4385 alc_start_queue(struct alc_softc *sc)
4390 RXQ_CFG_QUEUE0_ENB | RXQ_CFG_QUEUE1_ENB,
4391 RXQ_CFG_QUEUE0_ENB | RXQ_CFG_QUEUE1_ENB | RXQ_CFG_QUEUE2_ENB,
4396 ALC_LOCK_ASSERT(sc);
4399 cfg = CSR_READ_4(sc, ALC_RXQ_CFG);
4400 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
4401 cfg &= ~RXQ_CFG_ENB;
4404 cfg |= RXQ_CFG_QUEUE0_ENB;
4405 CSR_WRITE_4(sc, ALC_RXQ_CFG, cfg);
4407 cfg = CSR_READ_4(sc, ALC_TXQ_CFG);
4409 CSR_WRITE_4(sc, ALC_TXQ_CFG, cfg);
4413 alc_stop_queue(struct alc_softc *sc)
4419 reg = CSR_READ_4(sc, ALC_RXQ_CFG);
4420 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
4421 if ((reg & RXQ_CFG_ENB) != 0) {
4422 reg &= ~RXQ_CFG_ENB;
4423 CSR_WRITE_4(sc, ALC_RXQ_CFG, reg);
4426 if ((reg & RXQ_CFG_QUEUE0_ENB) != 0) {
4427 reg &= ~RXQ_CFG_QUEUE0_ENB;
4428 CSR_WRITE_4(sc, ALC_RXQ_CFG, reg);
4432 reg = CSR_READ_4(sc, ALC_TXQ_CFG);
4433 if ((reg & TXQ_CFG_ENB) != 0) {
4434 reg &= ~TXQ_CFG_ENB;
4435 CSR_WRITE_4(sc, ALC_TXQ_CFG, reg);
4438 for (i = ALC_TIMEOUT; i > 0; i--) {
4439 reg = CSR_READ_4(sc, ALC_IDLE_STATUS);
4440 if ((reg & (IDLE_STATUS_RXQ | IDLE_STATUS_TXQ)) == 0)
4445 device_printf(sc->alc_dev,
4446 "could not disable RxQ/TxQ (0x%08x)!\n", reg);
4450 alc_init_tx_ring(struct alc_softc *sc)
4452 struct alc_ring_data *rd;
4453 struct alc_txdesc *txd;
4456 ALC_LOCK_ASSERT(sc);
4458 sc->alc_cdata.alc_tx_prod = 0;
4459 sc->alc_cdata.alc_tx_cons = 0;
4460 sc->alc_cdata.alc_tx_cnt = 0;
4462 rd = &sc->alc_rdata;
4463 bzero(rd->alc_tx_ring, ALC_TX_RING_SZ);
4464 for (i = 0; i < ALC_TX_RING_CNT; i++) {
4465 txd = &sc->alc_cdata.alc_txdesc[i];
4469 bus_dmamap_sync(sc->alc_cdata.alc_tx_ring_tag,
4470 sc->alc_cdata.alc_tx_ring_map, BUS_DMASYNC_PREWRITE);
4474 alc_init_rx_ring(struct alc_softc *sc)
4476 struct alc_ring_data *rd;
4477 struct alc_rxdesc *rxd;
4480 ALC_LOCK_ASSERT(sc);
4482 sc->alc_cdata.alc_rx_cons = ALC_RX_RING_CNT - 1;
4483 sc->alc_morework = 0;
4484 rd = &sc->alc_rdata;
4485 bzero(rd->alc_rx_ring, ALC_RX_RING_SZ);
4486 for (i = 0; i < ALC_RX_RING_CNT; i++) {
4487 rxd = &sc->alc_cdata.alc_rxdesc[i];
4489 rxd->rx_desc = &rd->alc_rx_ring[i];
4490 if (alc_newbuf(sc, rxd) != 0)
4495 * Since controller does not update Rx descriptors, driver
4496 * does have to read Rx descriptors back so BUS_DMASYNC_PREWRITE
4497 * is enough to ensure coherence.
4499 bus_dmamap_sync(sc->alc_cdata.alc_rx_ring_tag,
4500 sc->alc_cdata.alc_rx_ring_map, BUS_DMASYNC_PREWRITE);
4501 /* Let controller know availability of new Rx buffers. */
4502 CSR_WRITE_4(sc, ALC_MBOX_RD0_PROD_IDX, sc->alc_cdata.alc_rx_cons);
4508 alc_init_rr_ring(struct alc_softc *sc)
4510 struct alc_ring_data *rd;
4512 ALC_LOCK_ASSERT(sc);
4514 sc->alc_cdata.alc_rr_cons = 0;
4515 ALC_RXCHAIN_RESET(sc);
4517 rd = &sc->alc_rdata;
4518 bzero(rd->alc_rr_ring, ALC_RR_RING_SZ);
4519 bus_dmamap_sync(sc->alc_cdata.alc_rr_ring_tag,
4520 sc->alc_cdata.alc_rr_ring_map,
4521 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
4525 alc_init_cmb(struct alc_softc *sc)
4527 struct alc_ring_data *rd;
4529 ALC_LOCK_ASSERT(sc);
4531 rd = &sc->alc_rdata;
4532 bzero(rd->alc_cmb, ALC_CMB_SZ);
4533 bus_dmamap_sync(sc->alc_cdata.alc_cmb_tag, sc->alc_cdata.alc_cmb_map,
4534 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
4538 alc_init_smb(struct alc_softc *sc)
4540 struct alc_ring_data *rd;
4542 ALC_LOCK_ASSERT(sc);
4544 rd = &sc->alc_rdata;
4545 bzero(rd->alc_smb, ALC_SMB_SZ);
4546 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag, sc->alc_cdata.alc_smb_map,
4547 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
4551 alc_rxvlan(struct alc_softc *sc)
4556 ALC_LOCK_ASSERT(sc);
4559 reg = CSR_READ_4(sc, ALC_MAC_CFG);
4560 if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) != 0)
4561 reg |= MAC_CFG_VLAN_TAG_STRIP;
4563 reg &= ~MAC_CFG_VLAN_TAG_STRIP;
4564 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
4568 alc_rxfilter(struct alc_softc *sc)
4571 struct ifmultiaddr *ifma;
4576 ALC_LOCK_ASSERT(sc);
4580 bzero(mchash, sizeof(mchash));
4581 rxcfg = CSR_READ_4(sc, ALC_MAC_CFG);
4582 rxcfg &= ~(MAC_CFG_ALLMULTI | MAC_CFG_BCAST | MAC_CFG_PROMISC);
4583 if ((ifp->if_flags & IFF_BROADCAST) != 0)
4584 rxcfg |= MAC_CFG_BCAST;
4585 if ((ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI)) != 0) {
4586 if ((ifp->if_flags & IFF_PROMISC) != 0)
4587 rxcfg |= MAC_CFG_PROMISC;
4588 if ((ifp->if_flags & IFF_ALLMULTI) != 0)
4589 rxcfg |= MAC_CFG_ALLMULTI;
4590 mchash[0] = 0xFFFFFFFF;
4591 mchash[1] = 0xFFFFFFFF;
4595 if_maddr_rlock(ifp);
4596 TAILQ_FOREACH(ifma, &sc->alc_ifp->if_multiaddrs, ifma_link) {
4597 if (ifma->ifma_addr->sa_family != AF_LINK)
4599 crc = ether_crc32_be(LLADDR((struct sockaddr_dl *)
4600 ifma->ifma_addr), ETHER_ADDR_LEN);
4601 mchash[crc >> 31] |= 1 << ((crc >> 26) & 0x1f);
4603 if_maddr_runlock(ifp);
4606 CSR_WRITE_4(sc, ALC_MAR0, mchash[0]);
4607 CSR_WRITE_4(sc, ALC_MAR1, mchash[1]);
4608 CSR_WRITE_4(sc, ALC_MAC_CFG, rxcfg);
4612 sysctl_int_range(SYSCTL_HANDLER_ARGS, int low, int high)
4618 value = *(int *)arg1;
4619 error = sysctl_handle_int(oidp, &value, 0, req);
4620 if (error || req->newptr == NULL)
4622 if (value < low || value > high)
4624 *(int *)arg1 = value;
4630 sysctl_hw_alc_proc_limit(SYSCTL_HANDLER_ARGS)
4632 return (sysctl_int_range(oidp, arg1, arg2, req,
4633 ALC_PROC_MIN, ALC_PROC_MAX));
4637 sysctl_hw_alc_int_mod(SYSCTL_HANDLER_ARGS)
4640 return (sysctl_int_range(oidp, arg1, arg2, req,
4641 ALC_IM_TIMER_MIN, ALC_IM_TIMER_MAX));