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_arp.h>
53 #include <net/ethernet.h>
54 #include <net/if_dl.h>
55 #include <net/if_llc.h>
56 #include <net/if_media.h>
57 #include <net/if_types.h>
58 #include <net/if_vlan_var.h>
60 #include <netinet/in.h>
61 #include <netinet/in_systm.h>
62 #include <netinet/ip.h>
63 #include <netinet/tcp.h>
65 #include <dev/mii/mii.h>
66 #include <dev/mii/miivar.h>
68 #include <dev/pci/pcireg.h>
69 #include <dev/pci/pcivar.h>
71 #include <machine/bus.h>
72 #include <machine/in_cksum.h>
74 #include <dev/alc/if_alcreg.h>
75 #include <dev/alc/if_alcvar.h>
77 /* "device miibus" required. See GENERIC if you get errors here. */
78 #include "miibus_if.h"
79 #undef ALC_USE_CUSTOM_CSUM
81 #ifdef ALC_USE_CUSTOM_CSUM
82 #define ALC_CSUM_FEATURES (CSUM_TCP | CSUM_UDP)
84 #define ALC_CSUM_FEATURES (CSUM_IP | CSUM_TCP | CSUM_UDP)
87 MODULE_DEPEND(alc, pci, 1, 1, 1);
88 MODULE_DEPEND(alc, ether, 1, 1, 1);
89 MODULE_DEPEND(alc, miibus, 1, 1, 1);
92 static int msi_disable = 0;
93 static int msix_disable = 0;
94 TUNABLE_INT("hw.alc.msi_disable", &msi_disable);
95 TUNABLE_INT("hw.alc.msix_disable", &msix_disable);
98 * Devices supported by this driver.
100 static struct alc_ident alc_ident_table[] = {
101 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8131, 9 * 1024,
102 "Atheros AR8131 PCIe Gigabit Ethernet" },
103 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8132, 9 * 1024,
104 "Atheros AR8132 PCIe Fast Ethernet" },
105 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8151, 6 * 1024,
106 "Atheros AR8151 v1.0 PCIe Gigabit Ethernet" },
107 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8151_V2, 6 * 1024,
108 "Atheros AR8151 v2.0 PCIe Gigabit Ethernet" },
109 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8152_B, 6 * 1024,
110 "Atheros AR8152 v1.1 PCIe Fast Ethernet" },
111 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8152_B2, 6 * 1024,
112 "Atheros AR8152 v2.0 PCIe Fast Ethernet" },
113 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8161, 9 * 1024,
114 "Atheros AR8161 PCIe Gigabit Ethernet" },
115 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8162, 9 * 1024,
116 "Atheros AR8162 PCIe Fast Ethernet" },
117 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8171, 9 * 1024,
118 "Atheros AR8171 PCIe Gigabit Ethernet" },
119 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8172, 9 * 1024,
120 "Atheros AR8172 PCIe Fast Ethernet" },
121 { VENDORID_ATHEROS, DEVICEID_ATHEROS_E2200, 9 * 1024,
122 "Killer E2200 Gigabit Ethernet" },
123 { VENDORID_ATHEROS, DEVICEID_ATHEROS_E2400, 9 * 1024,
124 "Killer E2400 Gigabit Ethernet" },
128 static void alc_aspm(struct alc_softc *, int, int);
129 static void alc_aspm_813x(struct alc_softc *, int);
130 static void alc_aspm_816x(struct alc_softc *, int);
131 static int alc_attach(device_t);
132 static int alc_check_boundary(struct alc_softc *);
133 static void alc_config_msi(struct alc_softc *);
134 static int alc_detach(device_t);
135 static void alc_disable_l0s_l1(struct alc_softc *);
136 static int alc_dma_alloc(struct alc_softc *);
137 static void alc_dma_free(struct alc_softc *);
138 static void alc_dmamap_cb(void *, bus_dma_segment_t *, int, int);
139 static void alc_dsp_fixup(struct alc_softc *, int);
140 static int alc_encap(struct alc_softc *, struct mbuf **);
141 static struct alc_ident *
142 alc_find_ident(device_t);
143 #ifndef __NO_STRICT_ALIGNMENT
145 alc_fixup_rx(struct ifnet *, struct mbuf *);
147 static void alc_get_macaddr(struct alc_softc *);
148 static void alc_get_macaddr_813x(struct alc_softc *);
149 static void alc_get_macaddr_816x(struct alc_softc *);
150 static void alc_get_macaddr_par(struct alc_softc *);
151 static void alc_init(void *);
152 static void alc_init_cmb(struct alc_softc *);
153 static void alc_init_locked(struct alc_softc *);
154 static void alc_init_rr_ring(struct alc_softc *);
155 static int alc_init_rx_ring(struct alc_softc *);
156 static void alc_init_smb(struct alc_softc *);
157 static void alc_init_tx_ring(struct alc_softc *);
158 static void alc_int_task(void *, int);
159 static int alc_intr(void *);
160 static int alc_ioctl(struct ifnet *, u_long, caddr_t);
161 static void alc_mac_config(struct alc_softc *);
162 static uint32_t alc_mii_readreg_813x(struct alc_softc *, int, int);
163 static uint32_t alc_mii_readreg_816x(struct alc_softc *, int, int);
164 static uint32_t alc_mii_writereg_813x(struct alc_softc *, int, int, int);
165 static uint32_t alc_mii_writereg_816x(struct alc_softc *, int, int, int);
166 static int alc_miibus_readreg(device_t, int, int);
167 static void alc_miibus_statchg(device_t);
168 static int alc_miibus_writereg(device_t, int, int, int);
169 static uint32_t alc_miidbg_readreg(struct alc_softc *, int);
170 static uint32_t alc_miidbg_writereg(struct alc_softc *, int, int);
171 static uint32_t alc_miiext_readreg(struct alc_softc *, int, int);
172 static uint32_t alc_miiext_writereg(struct alc_softc *, int, int, int);
173 static int alc_mediachange(struct ifnet *);
174 static int alc_mediachange_locked(struct alc_softc *);
175 static void alc_mediastatus(struct ifnet *, struct ifmediareq *);
176 static int alc_newbuf(struct alc_softc *, struct alc_rxdesc *);
177 static void alc_osc_reset(struct alc_softc *);
178 static void alc_phy_down(struct alc_softc *);
179 static void alc_phy_reset(struct alc_softc *);
180 static void alc_phy_reset_813x(struct alc_softc *);
181 static void alc_phy_reset_816x(struct alc_softc *);
182 static int alc_probe(device_t);
183 static void alc_reset(struct alc_softc *);
184 static int alc_resume(device_t);
185 static void alc_rxeof(struct alc_softc *, struct rx_rdesc *);
186 static int alc_rxintr(struct alc_softc *, int);
187 static void alc_rxfilter(struct alc_softc *);
188 static void alc_rxvlan(struct alc_softc *);
189 static void alc_setlinkspeed(struct alc_softc *);
190 static void alc_setwol(struct alc_softc *);
191 static void alc_setwol_813x(struct alc_softc *);
192 static void alc_setwol_816x(struct alc_softc *);
193 static int alc_shutdown(device_t);
194 static void alc_start(struct ifnet *);
195 static void alc_start_locked(struct ifnet *);
196 static void alc_start_queue(struct alc_softc *);
197 static void alc_stats_clear(struct alc_softc *);
198 static void alc_stats_update(struct alc_softc *);
199 static void alc_stop(struct alc_softc *);
200 static void alc_stop_mac(struct alc_softc *);
201 static void alc_stop_queue(struct alc_softc *);
202 static int alc_suspend(device_t);
203 static void alc_sysctl_node(struct alc_softc *);
204 static void alc_tick(void *);
205 static void alc_txeof(struct alc_softc *);
206 static void alc_watchdog(struct alc_softc *);
207 static int sysctl_int_range(SYSCTL_HANDLER_ARGS, int, int);
208 static int sysctl_hw_alc_proc_limit(SYSCTL_HANDLER_ARGS);
209 static int sysctl_hw_alc_int_mod(SYSCTL_HANDLER_ARGS);
211 static device_method_t alc_methods[] = {
212 /* Device interface. */
213 DEVMETHOD(device_probe, alc_probe),
214 DEVMETHOD(device_attach, alc_attach),
215 DEVMETHOD(device_detach, alc_detach),
216 DEVMETHOD(device_shutdown, alc_shutdown),
217 DEVMETHOD(device_suspend, alc_suspend),
218 DEVMETHOD(device_resume, alc_resume),
221 DEVMETHOD(miibus_readreg, alc_miibus_readreg),
222 DEVMETHOD(miibus_writereg, alc_miibus_writereg),
223 DEVMETHOD(miibus_statchg, alc_miibus_statchg),
228 static driver_t alc_driver = {
231 sizeof(struct alc_softc)
234 static devclass_t alc_devclass;
236 DRIVER_MODULE(alc, pci, alc_driver, alc_devclass, 0, 0);
237 DRIVER_MODULE(miibus, alc, miibus_driver, miibus_devclass, 0, 0);
239 static struct resource_spec alc_res_spec_mem[] = {
240 { SYS_RES_MEMORY, PCIR_BAR(0), RF_ACTIVE },
244 static struct resource_spec alc_irq_spec_legacy[] = {
245 { SYS_RES_IRQ, 0, RF_ACTIVE | RF_SHAREABLE },
249 static struct resource_spec alc_irq_spec_msi[] = {
250 { SYS_RES_IRQ, 1, RF_ACTIVE },
254 static struct resource_spec alc_irq_spec_msix[] = {
255 { SYS_RES_IRQ, 1, RF_ACTIVE },
259 static uint32_t alc_dma_burst[] = { 128, 256, 512, 1024, 2048, 4096, 0, 0 };
262 alc_miibus_readreg(device_t dev, int phy, int reg)
264 struct alc_softc *sc;
267 sc = device_get_softc(dev);
268 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
269 v = alc_mii_readreg_816x(sc, phy, reg);
271 v = alc_mii_readreg_813x(sc, phy, reg);
276 alc_mii_readreg_813x(struct alc_softc *sc, int phy, int reg)
282 * For AR8132 fast ethernet controller, do not report 1000baseT
283 * capability to mii(4). Even though AR8132 uses the same
284 * model/revision number of F1 gigabit PHY, the PHY has no
285 * ability to establish 1000baseT link.
287 if ((sc->alc_flags & ALC_FLAG_FASTETHER) != 0 &&
291 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_READ |
292 MDIO_SUP_PREAMBLE | MDIO_CLK_25_4 | MDIO_REG_ADDR(reg));
293 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
295 v = CSR_READ_4(sc, ALC_MDIO);
296 if ((v & (MDIO_OP_EXECUTE | MDIO_OP_BUSY)) == 0)
301 device_printf(sc->alc_dev, "phy read timeout : %d\n", reg);
305 return ((v & MDIO_DATA_MASK) >> MDIO_DATA_SHIFT);
309 alc_mii_readreg_816x(struct alc_softc *sc, int phy, int reg)
314 if ((sc->alc_flags & ALC_FLAG_LINK) != 0)
315 clk = MDIO_CLK_25_128;
318 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_READ |
319 MDIO_SUP_PREAMBLE | clk | MDIO_REG_ADDR(reg));
320 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
322 v = CSR_READ_4(sc, ALC_MDIO);
323 if ((v & MDIO_OP_BUSY) == 0)
328 device_printf(sc->alc_dev, "phy read timeout : %d\n", reg);
332 return ((v & MDIO_DATA_MASK) >> MDIO_DATA_SHIFT);
336 alc_miibus_writereg(device_t dev, int phy, int reg, int val)
338 struct alc_softc *sc;
341 sc = device_get_softc(dev);
342 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
343 v = alc_mii_writereg_816x(sc, phy, reg, val);
345 v = alc_mii_writereg_813x(sc, phy, reg, val);
350 alc_mii_writereg_813x(struct alc_softc *sc, int phy, int reg, int val)
355 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_WRITE |
356 (val & MDIO_DATA_MASK) << MDIO_DATA_SHIFT |
357 MDIO_SUP_PREAMBLE | MDIO_CLK_25_4 | MDIO_REG_ADDR(reg));
358 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
360 v = CSR_READ_4(sc, ALC_MDIO);
361 if ((v & (MDIO_OP_EXECUTE | MDIO_OP_BUSY)) == 0)
366 device_printf(sc->alc_dev, "phy write timeout : %d\n", reg);
372 alc_mii_writereg_816x(struct alc_softc *sc, int phy, int reg, int val)
377 if ((sc->alc_flags & ALC_FLAG_LINK) != 0)
378 clk = MDIO_CLK_25_128;
381 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_WRITE |
382 ((val & MDIO_DATA_MASK) << MDIO_DATA_SHIFT) | MDIO_REG_ADDR(reg) |
383 MDIO_SUP_PREAMBLE | clk);
384 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
386 v = CSR_READ_4(sc, ALC_MDIO);
387 if ((v & MDIO_OP_BUSY) == 0)
392 device_printf(sc->alc_dev, "phy write timeout : %d\n", reg);
398 alc_miibus_statchg(device_t dev)
400 struct alc_softc *sc;
401 struct mii_data *mii;
405 sc = device_get_softc(dev);
407 mii = device_get_softc(sc->alc_miibus);
409 if (mii == NULL || ifp == NULL ||
410 (ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
413 sc->alc_flags &= ~ALC_FLAG_LINK;
414 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) ==
415 (IFM_ACTIVE | IFM_AVALID)) {
416 switch (IFM_SUBTYPE(mii->mii_media_active)) {
419 sc->alc_flags |= ALC_FLAG_LINK;
422 if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0)
423 sc->alc_flags |= ALC_FLAG_LINK;
429 /* Stop Rx/Tx MACs. */
432 /* Program MACs with resolved speed/duplex/flow-control. */
433 if ((sc->alc_flags & ALC_FLAG_LINK) != 0) {
436 /* Re-enable Tx/Rx MACs. */
437 reg = CSR_READ_4(sc, ALC_MAC_CFG);
438 reg |= MAC_CFG_TX_ENB | MAC_CFG_RX_ENB;
439 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
441 alc_aspm(sc, 0, IFM_SUBTYPE(mii->mii_media_active));
442 alc_dsp_fixup(sc, IFM_SUBTYPE(mii->mii_media_active));
446 alc_miidbg_readreg(struct alc_softc *sc, int reg)
449 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_ADDR,
451 return (alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
456 alc_miidbg_writereg(struct alc_softc *sc, int reg, int val)
459 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_ADDR,
461 return (alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
462 ALC_MII_DBG_DATA, val));
466 alc_miiext_readreg(struct alc_softc *sc, int devaddr, int reg)
471 CSR_WRITE_4(sc, ALC_EXT_MDIO, EXT_MDIO_REG(reg) |
472 EXT_MDIO_DEVADDR(devaddr));
473 if ((sc->alc_flags & ALC_FLAG_LINK) != 0)
474 clk = MDIO_CLK_25_128;
477 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_READ |
478 MDIO_SUP_PREAMBLE | clk | MDIO_MODE_EXT);
479 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
481 v = CSR_READ_4(sc, ALC_MDIO);
482 if ((v & MDIO_OP_BUSY) == 0)
487 device_printf(sc->alc_dev, "phy ext read timeout : %d, %d\n",
492 return ((v & MDIO_DATA_MASK) >> MDIO_DATA_SHIFT);
496 alc_miiext_writereg(struct alc_softc *sc, int devaddr, int reg, int val)
501 CSR_WRITE_4(sc, ALC_EXT_MDIO, EXT_MDIO_REG(reg) |
502 EXT_MDIO_DEVADDR(devaddr));
503 if ((sc->alc_flags & ALC_FLAG_LINK) != 0)
504 clk = MDIO_CLK_25_128;
507 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_WRITE |
508 ((val & MDIO_DATA_MASK) << MDIO_DATA_SHIFT) |
509 MDIO_SUP_PREAMBLE | clk | MDIO_MODE_EXT);
510 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
512 v = CSR_READ_4(sc, ALC_MDIO);
513 if ((v & MDIO_OP_BUSY) == 0)
518 device_printf(sc->alc_dev, "phy ext write timeout : %d, %d\n",
525 alc_dsp_fixup(struct alc_softc *sc, int media)
527 uint16_t agc, len, val;
529 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
531 if (AR816X_REV(sc->alc_rev) >= AR816X_REV_C0)
536 * 1000BT/AZ, wrong cable length
538 if ((sc->alc_flags & ALC_FLAG_LINK) != 0) {
539 len = alc_miiext_readreg(sc, MII_EXT_PCS, MII_EXT_CLDCTL6);
540 len = (len >> EXT_CLDCTL6_CAB_LEN_SHIFT) &
541 EXT_CLDCTL6_CAB_LEN_MASK;
542 agc = alc_miidbg_readreg(sc, MII_DBG_AGC);
543 agc = (agc >> DBG_AGC_2_VGA_SHIFT) & DBG_AGC_2_VGA_MASK;
544 if ((media == IFM_1000_T && len > EXT_CLDCTL6_CAB_LEN_SHORT1G &&
545 agc > DBG_AGC_LONG1G_LIMT) ||
546 (media == IFM_100_TX && len > DBG_AGC_LONG100M_LIMT &&
547 agc > DBG_AGC_LONG1G_LIMT)) {
548 alc_miidbg_writereg(sc, MII_DBG_AZ_ANADECT,
549 DBG_AZ_ANADECT_LONG);
550 val = alc_miiext_readreg(sc, MII_EXT_ANEG,
552 val |= ANEG_AFEE_10BT_100M_TH;
553 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_AFE,
556 alc_miidbg_writereg(sc, MII_DBG_AZ_ANADECT,
557 DBG_AZ_ANADECT_DEFAULT);
558 val = alc_miiext_readreg(sc, MII_EXT_ANEG,
560 val &= ~ANEG_AFEE_10BT_100M_TH;
561 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_AFE,
564 if ((sc->alc_flags & ALC_FLAG_LINK_WAR) != 0 &&
565 AR816X_REV(sc->alc_rev) == AR816X_REV_B0) {
566 if (media == IFM_1000_T) {
568 * Giga link threshold, raise the tolerance of
571 val = alc_miidbg_readreg(sc, MII_DBG_MSE20DB);
572 val &= ~DBG_MSE20DB_TH_MASK;
573 val |= (DBG_MSE20DB_TH_HI <<
574 DBG_MSE20DB_TH_SHIFT);
575 alc_miidbg_writereg(sc, MII_DBG_MSE20DB, val);
576 } else if (media == IFM_100_TX)
577 alc_miidbg_writereg(sc, MII_DBG_MSE16DB,
581 val = alc_miiext_readreg(sc, MII_EXT_ANEG, MII_EXT_ANEG_AFE);
582 val &= ~ANEG_AFEE_10BT_100M_TH;
583 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_AFE, val);
584 if ((sc->alc_flags & ALC_FLAG_LINK_WAR) != 0 &&
585 AR816X_REV(sc->alc_rev) == AR816X_REV_B0) {
586 alc_miidbg_writereg(sc, MII_DBG_MSE16DB,
588 val = alc_miidbg_readreg(sc, MII_DBG_MSE20DB);
589 val &= ~DBG_MSE20DB_TH_MASK;
590 val |= (DBG_MSE20DB_TH_DEFAULT << DBG_MSE20DB_TH_SHIFT);
591 alc_miidbg_writereg(sc, MII_DBG_MSE20DB, val);
597 alc_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr)
599 struct alc_softc *sc;
600 struct mii_data *mii;
604 if ((ifp->if_flags & IFF_UP) == 0) {
608 mii = device_get_softc(sc->alc_miibus);
611 ifmr->ifm_status = mii->mii_media_status;
612 ifmr->ifm_active = mii->mii_media_active;
617 alc_mediachange(struct ifnet *ifp)
619 struct alc_softc *sc;
624 error = alc_mediachange_locked(sc);
631 alc_mediachange_locked(struct alc_softc *sc)
633 struct mii_data *mii;
634 struct mii_softc *miisc;
639 mii = device_get_softc(sc->alc_miibus);
640 LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
642 error = mii_mediachg(mii);
647 static struct alc_ident *
648 alc_find_ident(device_t dev)
650 struct alc_ident *ident;
651 uint16_t vendor, devid;
653 vendor = pci_get_vendor(dev);
654 devid = pci_get_device(dev);
655 for (ident = alc_ident_table; ident->name != NULL; ident++) {
656 if (vendor == ident->vendorid && devid == ident->deviceid)
664 alc_probe(device_t dev)
666 struct alc_ident *ident;
668 ident = alc_find_ident(dev);
670 device_set_desc(dev, ident->name);
671 return (BUS_PROBE_DEFAULT);
678 alc_get_macaddr(struct alc_softc *sc)
681 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
682 alc_get_macaddr_816x(sc);
684 alc_get_macaddr_813x(sc);
688 alc_get_macaddr_813x(struct alc_softc *sc)
695 opt = CSR_READ_4(sc, ALC_OPT_CFG);
696 if ((CSR_READ_4(sc, ALC_MASTER_CFG) & MASTER_OTP_SEL) != 0 &&
697 (CSR_READ_4(sc, ALC_TWSI_DEBUG) & TWSI_DEBUG_DEV_EXIST) != 0) {
699 * EEPROM found, let TWSI reload EEPROM configuration.
700 * This will set ethernet address of controller.
703 switch (sc->alc_ident->deviceid) {
704 case DEVICEID_ATHEROS_AR8131:
705 case DEVICEID_ATHEROS_AR8132:
706 if ((opt & OPT_CFG_CLK_ENB) == 0) {
707 opt |= OPT_CFG_CLK_ENB;
708 CSR_WRITE_4(sc, ALC_OPT_CFG, opt);
709 CSR_READ_4(sc, ALC_OPT_CFG);
713 case DEVICEID_ATHEROS_AR8151:
714 case DEVICEID_ATHEROS_AR8151_V2:
715 case DEVICEID_ATHEROS_AR8152_B:
716 case DEVICEID_ATHEROS_AR8152_B2:
717 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
718 ALC_MII_DBG_ADDR, 0x00);
719 val = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
721 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
722 ALC_MII_DBG_DATA, val & 0xFF7F);
723 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
724 ALC_MII_DBG_ADDR, 0x3B);
725 val = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
727 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
728 ALC_MII_DBG_DATA, val | 0x0008);
733 CSR_WRITE_4(sc, ALC_LTSSM_ID_CFG,
734 CSR_READ_4(sc, ALC_LTSSM_ID_CFG) & ~LTSSM_ID_WRO_ENB);
735 CSR_WRITE_4(sc, ALC_WOL_CFG, 0);
736 CSR_READ_4(sc, ALC_WOL_CFG);
738 CSR_WRITE_4(sc, ALC_TWSI_CFG, CSR_READ_4(sc, ALC_TWSI_CFG) |
739 TWSI_CFG_SW_LD_START);
740 for (i = 100; i > 0; i--) {
742 if ((CSR_READ_4(sc, ALC_TWSI_CFG) &
743 TWSI_CFG_SW_LD_START) == 0)
747 device_printf(sc->alc_dev,
748 "reloading EEPROM timeout!\n");
751 device_printf(sc->alc_dev, "EEPROM not found!\n");
754 switch (sc->alc_ident->deviceid) {
755 case DEVICEID_ATHEROS_AR8131:
756 case DEVICEID_ATHEROS_AR8132:
757 if ((opt & OPT_CFG_CLK_ENB) != 0) {
758 opt &= ~OPT_CFG_CLK_ENB;
759 CSR_WRITE_4(sc, ALC_OPT_CFG, opt);
760 CSR_READ_4(sc, ALC_OPT_CFG);
764 case DEVICEID_ATHEROS_AR8151:
765 case DEVICEID_ATHEROS_AR8151_V2:
766 case DEVICEID_ATHEROS_AR8152_B:
767 case DEVICEID_ATHEROS_AR8152_B2:
768 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
769 ALC_MII_DBG_ADDR, 0x00);
770 val = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
772 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
773 ALC_MII_DBG_DATA, val | 0x0080);
774 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
775 ALC_MII_DBG_ADDR, 0x3B);
776 val = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
778 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
779 ALC_MII_DBG_DATA, val & 0xFFF7);
785 alc_get_macaddr_par(sc);
789 alc_get_macaddr_816x(struct alc_softc *sc)
795 /* Try to reload station address via TWSI. */
796 for (i = 100; i > 0; i--) {
797 reg = CSR_READ_4(sc, ALC_SLD);
798 if ((reg & (SLD_PROGRESS | SLD_START)) == 0)
803 CSR_WRITE_4(sc, ALC_SLD, reg | SLD_START);
804 for (i = 100; i > 0; i--) {
806 reg = CSR_READ_4(sc, ALC_SLD);
807 if ((reg & SLD_START) == 0)
812 else if (bootverbose)
813 device_printf(sc->alc_dev,
814 "reloading station address via TWSI timed out!\n");
817 /* Try to reload station address from EEPROM or FLASH. */
819 reg = CSR_READ_4(sc, ALC_EEPROM_LD);
820 if ((reg & (EEPROM_LD_EEPROM_EXIST |
821 EEPROM_LD_FLASH_EXIST)) != 0) {
822 for (i = 100; i > 0; i--) {
823 reg = CSR_READ_4(sc, ALC_EEPROM_LD);
824 if ((reg & (EEPROM_LD_PROGRESS |
825 EEPROM_LD_START)) == 0)
830 CSR_WRITE_4(sc, ALC_EEPROM_LD, reg |
832 for (i = 100; i > 0; i--) {
834 reg = CSR_READ_4(sc, ALC_EEPROM_LD);
835 if ((reg & EEPROM_LD_START) == 0)
838 } else if (bootverbose)
839 device_printf(sc->alc_dev,
840 "reloading EEPROM/FLASH timed out!\n");
844 alc_get_macaddr_par(sc);
848 alc_get_macaddr_par(struct alc_softc *sc)
852 ea[0] = CSR_READ_4(sc, ALC_PAR0);
853 ea[1] = CSR_READ_4(sc, ALC_PAR1);
854 sc->alc_eaddr[0] = (ea[1] >> 8) & 0xFF;
855 sc->alc_eaddr[1] = (ea[1] >> 0) & 0xFF;
856 sc->alc_eaddr[2] = (ea[0] >> 24) & 0xFF;
857 sc->alc_eaddr[3] = (ea[0] >> 16) & 0xFF;
858 sc->alc_eaddr[4] = (ea[0] >> 8) & 0xFF;
859 sc->alc_eaddr[5] = (ea[0] >> 0) & 0xFF;
863 alc_disable_l0s_l1(struct alc_softc *sc)
867 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
868 /* Another magic from vendor. */
869 pmcfg = CSR_READ_4(sc, ALC_PM_CFG);
870 pmcfg &= ~(PM_CFG_L1_ENTRY_TIMER_MASK | PM_CFG_CLK_SWH_L1 |
871 PM_CFG_ASPM_L0S_ENB | PM_CFG_ASPM_L1_ENB |
872 PM_CFG_MAC_ASPM_CHK | PM_CFG_SERDES_PD_EX_L1);
873 pmcfg |= PM_CFG_SERDES_BUDS_RX_L1_ENB |
874 PM_CFG_SERDES_PLL_L1_ENB | PM_CFG_SERDES_L1_ENB;
875 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg);
880 alc_phy_reset(struct alc_softc *sc)
883 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
884 alc_phy_reset_816x(sc);
886 alc_phy_reset_813x(sc);
890 alc_phy_reset_813x(struct alc_softc *sc)
894 /* Reset magic from Linux. */
895 CSR_WRITE_2(sc, ALC_GPHY_CFG, GPHY_CFG_SEL_ANA_RESET);
896 CSR_READ_2(sc, ALC_GPHY_CFG);
899 CSR_WRITE_2(sc, ALC_GPHY_CFG, GPHY_CFG_EXT_RESET |
900 GPHY_CFG_SEL_ANA_RESET);
901 CSR_READ_2(sc, ALC_GPHY_CFG);
904 /* DSP fixup, Vendor magic. */
905 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B) {
906 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
907 ALC_MII_DBG_ADDR, 0x000A);
908 data = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
910 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
911 ALC_MII_DBG_DATA, data & 0xDFFF);
913 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151 ||
914 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2 ||
915 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B ||
916 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2) {
917 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
918 ALC_MII_DBG_ADDR, 0x003B);
919 data = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
921 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
922 ALC_MII_DBG_DATA, data & 0xFFF7);
925 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151) {
926 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
927 ALC_MII_DBG_ADDR, 0x0029);
928 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
929 ALC_MII_DBG_DATA, 0x929D);
931 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8131 ||
932 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8132 ||
933 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2 ||
934 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2) {
935 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
936 ALC_MII_DBG_ADDR, 0x0029);
937 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
938 ALC_MII_DBG_DATA, 0xB6DD);
941 /* Load DSP codes, vendor magic. */
942 data = ANA_LOOP_SEL_10BT | ANA_EN_MASK_TB | ANA_EN_10BT_IDLE |
943 ((1 << ANA_INTERVAL_SEL_TIMER_SHIFT) & ANA_INTERVAL_SEL_TIMER_MASK);
944 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
945 ALC_MII_DBG_ADDR, MII_ANA_CFG18);
946 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
947 ALC_MII_DBG_DATA, data);
949 data = ((2 << ANA_SERDES_CDR_BW_SHIFT) & ANA_SERDES_CDR_BW_MASK) |
950 ANA_SERDES_EN_DEEM | ANA_SERDES_SEL_HSP | ANA_SERDES_EN_PLL |
952 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
953 ALC_MII_DBG_ADDR, MII_ANA_CFG5);
954 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
955 ALC_MII_DBG_DATA, data);
957 data = ((44 << ANA_LONG_CABLE_TH_100_SHIFT) &
958 ANA_LONG_CABLE_TH_100_MASK) |
959 ((33 << ANA_SHORT_CABLE_TH_100_SHIFT) &
960 ANA_SHORT_CABLE_TH_100_SHIFT) |
961 ANA_BP_BAD_LINK_ACCUM | ANA_BP_SMALL_BW;
962 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
963 ALC_MII_DBG_ADDR, MII_ANA_CFG54);
964 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
965 ALC_MII_DBG_DATA, data);
967 data = ((11 << ANA_IECHO_ADJ_3_SHIFT) & ANA_IECHO_ADJ_3_MASK) |
968 ((11 << ANA_IECHO_ADJ_2_SHIFT) & ANA_IECHO_ADJ_2_MASK) |
969 ((8 << ANA_IECHO_ADJ_1_SHIFT) & ANA_IECHO_ADJ_1_MASK) |
970 ((8 << ANA_IECHO_ADJ_0_SHIFT) & ANA_IECHO_ADJ_0_MASK);
971 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
972 ALC_MII_DBG_ADDR, MII_ANA_CFG4);
973 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
974 ALC_MII_DBG_DATA, data);
976 data = ((7 & ANA_MANUL_SWICH_ON_SHIFT) & ANA_MANUL_SWICH_ON_MASK) |
977 ANA_RESTART_CAL | ANA_MAN_ENABLE | ANA_SEL_HSP | ANA_EN_HB |
979 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
980 ALC_MII_DBG_ADDR, MII_ANA_CFG0);
981 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
982 ALC_MII_DBG_DATA, data);
985 /* Disable hibernation. */
986 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_ADDR,
988 data = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
991 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_DATA,
994 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_ADDR,
996 data = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
999 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_DATA,
1004 alc_phy_reset_816x(struct alc_softc *sc)
1008 val = CSR_READ_4(sc, ALC_GPHY_CFG);
1009 val &= ~(GPHY_CFG_EXT_RESET | GPHY_CFG_LED_MODE |
1010 GPHY_CFG_GATE_25M_ENB | GPHY_CFG_PHY_IDDQ | GPHY_CFG_PHY_PLL_ON |
1011 GPHY_CFG_PWDOWN_HW | GPHY_CFG_100AB_ENB);
1012 val |= GPHY_CFG_SEL_ANA_RESET;
1014 val |= GPHY_CFG_HIB_PULSE | GPHY_CFG_HIB_EN | GPHY_CFG_SEL_ANA_RESET;
1016 /* Disable PHY hibernation. */
1017 val &= ~(GPHY_CFG_HIB_PULSE | GPHY_CFG_HIB_EN);
1019 CSR_WRITE_4(sc, ALC_GPHY_CFG, val);
1021 CSR_WRITE_4(sc, ALC_GPHY_CFG, val | GPHY_CFG_EXT_RESET);
1024 /* Vendor PHY magic. */
1026 alc_miidbg_writereg(sc, MII_DBG_LEGCYPS, DBG_LEGCYPS_DEFAULT);
1027 alc_miidbg_writereg(sc, MII_DBG_SYSMODCTL, DBG_SYSMODCTL_DEFAULT);
1028 alc_miiext_writereg(sc, MII_EXT_PCS, MII_EXT_VDRVBIAS,
1029 EXT_VDRVBIAS_DEFAULT);
1031 /* Disable PHY hibernation. */
1032 alc_miidbg_writereg(sc, MII_DBG_LEGCYPS,
1033 DBG_LEGCYPS_DEFAULT & ~DBG_LEGCYPS_ENB);
1034 alc_miidbg_writereg(sc, MII_DBG_HIBNEG,
1035 DBG_HIBNEG_DEFAULT & ~(DBG_HIBNEG_PSHIB_EN | DBG_HIBNEG_HIB_PULSE));
1036 alc_miidbg_writereg(sc, MII_DBG_GREENCFG, DBG_GREENCFG_DEFAULT);
1039 /* XXX Disable EEE. */
1040 val = CSR_READ_4(sc, ALC_LPI_CTL);
1041 val &= ~LPI_CTL_ENB;
1042 CSR_WRITE_4(sc, ALC_LPI_CTL, val);
1043 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_LOCAL_EEEADV, 0);
1045 /* PHY power saving. */
1046 alc_miidbg_writereg(sc, MII_DBG_TST10BTCFG, DBG_TST10BTCFG_DEFAULT);
1047 alc_miidbg_writereg(sc, MII_DBG_SRDSYSMOD, DBG_SRDSYSMOD_DEFAULT);
1048 alc_miidbg_writereg(sc, MII_DBG_TST100BTCFG, DBG_TST100BTCFG_DEFAULT);
1049 alc_miidbg_writereg(sc, MII_DBG_ANACTL, DBG_ANACTL_DEFAULT);
1050 val = alc_miidbg_readreg(sc, MII_DBG_GREENCFG2);
1051 val &= ~DBG_GREENCFG2_GATE_DFSE_EN;
1052 alc_miidbg_writereg(sc, MII_DBG_GREENCFG2, val);
1054 /* RTL8139C, 120m issue. */
1055 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_NLP78,
1056 ANEG_NLP78_120M_DEFAULT);
1057 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_S3DIG10,
1058 ANEG_S3DIG10_DEFAULT);
1060 if ((sc->alc_flags & ALC_FLAG_LINK_WAR) != 0) {
1061 /* Turn off half amplitude. */
1062 val = alc_miiext_readreg(sc, MII_EXT_PCS, MII_EXT_CLDCTL3);
1063 val |= EXT_CLDCTL3_BP_CABLE1TH_DET_GT;
1064 alc_miiext_writereg(sc, MII_EXT_PCS, MII_EXT_CLDCTL3, val);
1065 /* Turn off Green feature. */
1066 val = alc_miidbg_readreg(sc, MII_DBG_GREENCFG2);
1067 val |= DBG_GREENCFG2_BP_GREEN;
1068 alc_miidbg_writereg(sc, MII_DBG_GREENCFG2, val);
1069 /* Turn off half bias. */
1070 val = alc_miiext_readreg(sc, MII_EXT_PCS, MII_EXT_CLDCTL5);
1071 val |= EXT_CLDCTL5_BP_VD_HLFBIAS;
1072 alc_miiext_writereg(sc, MII_EXT_PCS, MII_EXT_CLDCTL5, val);
1077 alc_phy_down(struct alc_softc *sc)
1081 switch (sc->alc_ident->deviceid) {
1082 case DEVICEID_ATHEROS_AR8161:
1083 case DEVICEID_ATHEROS_E2200:
1084 case DEVICEID_ATHEROS_E2400:
1085 case DEVICEID_ATHEROS_AR8162:
1086 case DEVICEID_ATHEROS_AR8171:
1087 case DEVICEID_ATHEROS_AR8172:
1088 gphy = CSR_READ_4(sc, ALC_GPHY_CFG);
1089 gphy &= ~(GPHY_CFG_EXT_RESET | GPHY_CFG_LED_MODE |
1090 GPHY_CFG_100AB_ENB | GPHY_CFG_PHY_PLL_ON);
1091 gphy |= GPHY_CFG_HIB_EN | GPHY_CFG_HIB_PULSE |
1092 GPHY_CFG_SEL_ANA_RESET;
1093 gphy |= GPHY_CFG_PHY_IDDQ | GPHY_CFG_PWDOWN_HW;
1094 CSR_WRITE_4(sc, ALC_GPHY_CFG, gphy);
1096 case DEVICEID_ATHEROS_AR8151:
1097 case DEVICEID_ATHEROS_AR8151_V2:
1098 case DEVICEID_ATHEROS_AR8152_B:
1099 case DEVICEID_ATHEROS_AR8152_B2:
1101 * GPHY power down caused more problems on AR8151 v2.0.
1102 * When driver is reloaded after GPHY power down,
1103 * accesses to PHY/MAC registers hung the system. Only
1104 * cold boot recovered from it. I'm not sure whether
1105 * AR8151 v1.0 also requires this one though. I don't
1106 * have AR8151 v1.0 controller in hand.
1107 * The only option left is to isolate the PHY and
1108 * initiates power down the PHY which in turn saves
1109 * more power when driver is unloaded.
1111 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
1112 MII_BMCR, BMCR_ISO | BMCR_PDOWN);
1115 /* Force PHY down. */
1116 CSR_WRITE_2(sc, ALC_GPHY_CFG, GPHY_CFG_EXT_RESET |
1117 GPHY_CFG_SEL_ANA_RESET | GPHY_CFG_PHY_IDDQ |
1118 GPHY_CFG_PWDOWN_HW);
1125 alc_aspm(struct alc_softc *sc, int init, int media)
1128 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
1129 alc_aspm_816x(sc, init);
1131 alc_aspm_813x(sc, media);
1135 alc_aspm_813x(struct alc_softc *sc, int media)
1140 if ((sc->alc_flags & ALC_FLAG_LINK) == 0)
1143 pmcfg = CSR_READ_4(sc, ALC_PM_CFG);
1144 if ((sc->alc_flags & (ALC_FLAG_APS | ALC_FLAG_PCIE)) ==
1145 (ALC_FLAG_APS | ALC_FLAG_PCIE))
1146 linkcfg = CSR_READ_2(sc, sc->alc_expcap +
1150 pmcfg &= ~PM_CFG_SERDES_PD_EX_L1;
1151 pmcfg &= ~(PM_CFG_L1_ENTRY_TIMER_MASK | PM_CFG_LCKDET_TIMER_MASK);
1152 pmcfg |= PM_CFG_MAC_ASPM_CHK;
1153 pmcfg |= (PM_CFG_LCKDET_TIMER_DEFAULT << PM_CFG_LCKDET_TIMER_SHIFT);
1154 pmcfg &= ~(PM_CFG_ASPM_L1_ENB | PM_CFG_ASPM_L0S_ENB);
1156 if ((sc->alc_flags & ALC_FLAG_APS) != 0) {
1157 /* Disable extended sync except AR8152 B v1.0 */
1158 linkcfg &= ~PCIEM_LINK_CTL_EXTENDED_SYNC;
1159 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B &&
1160 sc->alc_rev == ATHEROS_AR8152_B_V10)
1161 linkcfg |= PCIEM_LINK_CTL_EXTENDED_SYNC;
1162 CSR_WRITE_2(sc, sc->alc_expcap + PCIER_LINK_CTL,
1164 pmcfg &= ~(PM_CFG_EN_BUFS_RX_L0S | PM_CFG_SA_DLY_ENB |
1166 pmcfg |= (PM_CFG_L1_ENTRY_TIMER_DEFAULT <<
1167 PM_CFG_L1_ENTRY_TIMER_SHIFT);
1168 pmcfg &= ~PM_CFG_PM_REQ_TIMER_MASK;
1169 pmcfg |= (PM_CFG_PM_REQ_TIMER_DEFAULT <<
1170 PM_CFG_PM_REQ_TIMER_SHIFT);
1171 pmcfg |= PM_CFG_SERDES_PD_EX_L1 | PM_CFG_PCIE_RECV;
1174 if ((sc->alc_flags & ALC_FLAG_LINK) != 0) {
1175 if ((sc->alc_flags & ALC_FLAG_L0S) != 0)
1176 pmcfg |= PM_CFG_ASPM_L0S_ENB;
1177 if ((sc->alc_flags & ALC_FLAG_L1S) != 0)
1178 pmcfg |= PM_CFG_ASPM_L1_ENB;
1179 if ((sc->alc_flags & ALC_FLAG_APS) != 0) {
1180 if (sc->alc_ident->deviceid ==
1181 DEVICEID_ATHEROS_AR8152_B)
1182 pmcfg &= ~PM_CFG_ASPM_L0S_ENB;
1183 pmcfg &= ~(PM_CFG_SERDES_L1_ENB |
1184 PM_CFG_SERDES_PLL_L1_ENB |
1185 PM_CFG_SERDES_BUDS_RX_L1_ENB);
1186 pmcfg |= PM_CFG_CLK_SWH_L1;
1187 if (media == IFM_100_TX || media == IFM_1000_T) {
1188 pmcfg &= ~PM_CFG_L1_ENTRY_TIMER_MASK;
1189 switch (sc->alc_ident->deviceid) {
1190 case DEVICEID_ATHEROS_AR8152_B:
1192 PM_CFG_L1_ENTRY_TIMER_SHIFT);
1194 case DEVICEID_ATHEROS_AR8152_B2:
1195 case DEVICEID_ATHEROS_AR8151_V2:
1197 PM_CFG_L1_ENTRY_TIMER_SHIFT);
1201 PM_CFG_L1_ENTRY_TIMER_SHIFT);
1206 pmcfg |= PM_CFG_SERDES_L1_ENB |
1207 PM_CFG_SERDES_PLL_L1_ENB |
1208 PM_CFG_SERDES_BUDS_RX_L1_ENB;
1209 pmcfg &= ~(PM_CFG_CLK_SWH_L1 |
1210 PM_CFG_ASPM_L1_ENB | PM_CFG_ASPM_L0S_ENB);
1213 pmcfg &= ~(PM_CFG_SERDES_BUDS_RX_L1_ENB | PM_CFG_SERDES_L1_ENB |
1214 PM_CFG_SERDES_PLL_L1_ENB);
1215 pmcfg |= PM_CFG_CLK_SWH_L1;
1216 if ((sc->alc_flags & ALC_FLAG_L1S) != 0)
1217 pmcfg |= PM_CFG_ASPM_L1_ENB;
1219 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg);
1223 alc_aspm_816x(struct alc_softc *sc, int init)
1227 pmcfg = CSR_READ_4(sc, ALC_PM_CFG);
1228 pmcfg &= ~PM_CFG_L1_ENTRY_TIMER_816X_MASK;
1229 pmcfg |= PM_CFG_L1_ENTRY_TIMER_816X_DEFAULT;
1230 pmcfg &= ~PM_CFG_PM_REQ_TIMER_MASK;
1231 pmcfg |= PM_CFG_PM_REQ_TIMER_816X_DEFAULT;
1232 pmcfg &= ~PM_CFG_LCKDET_TIMER_MASK;
1233 pmcfg |= PM_CFG_LCKDET_TIMER_DEFAULT;
1234 pmcfg |= PM_CFG_SERDES_PD_EX_L1 | PM_CFG_CLK_SWH_L1 | PM_CFG_PCIE_RECV;
1235 pmcfg &= ~(PM_CFG_RX_L1_AFTER_L0S | PM_CFG_TX_L1_AFTER_L0S |
1236 PM_CFG_ASPM_L1_ENB | PM_CFG_ASPM_L0S_ENB |
1237 PM_CFG_SERDES_L1_ENB | PM_CFG_SERDES_PLL_L1_ENB |
1238 PM_CFG_SERDES_BUDS_RX_L1_ENB | PM_CFG_SA_DLY_ENB |
1239 PM_CFG_MAC_ASPM_CHK | PM_CFG_HOTRST);
1240 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1 &&
1241 (sc->alc_rev & 0x01) != 0)
1242 pmcfg |= PM_CFG_SERDES_L1_ENB | PM_CFG_SERDES_PLL_L1_ENB;
1243 if ((sc->alc_flags & ALC_FLAG_LINK) != 0) {
1244 /* Link up, enable both L0s, L1s. */
1245 pmcfg |= PM_CFG_ASPM_L0S_ENB | PM_CFG_ASPM_L1_ENB |
1246 PM_CFG_MAC_ASPM_CHK;
1249 pmcfg |= PM_CFG_ASPM_L0S_ENB | PM_CFG_ASPM_L1_ENB |
1250 PM_CFG_MAC_ASPM_CHK;
1251 else if ((sc->alc_ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
1252 pmcfg |= PM_CFG_ASPM_L1_ENB | PM_CFG_MAC_ASPM_CHK;
1254 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg);
1258 alc_init_pcie(struct alc_softc *sc)
1260 const char *aspm_state[] = { "L0s/L1", "L0s", "L1", "L0s/L1" };
1261 uint32_t cap, ctl, val;
1264 /* Clear data link and flow-control protocol error. */
1265 val = CSR_READ_4(sc, ALC_PEX_UNC_ERR_SEV);
1266 val &= ~(PEX_UNC_ERR_SEV_DLP | PEX_UNC_ERR_SEV_FCP);
1267 CSR_WRITE_4(sc, ALC_PEX_UNC_ERR_SEV, val);
1269 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
1270 CSR_WRITE_4(sc, ALC_LTSSM_ID_CFG,
1271 CSR_READ_4(sc, ALC_LTSSM_ID_CFG) & ~LTSSM_ID_WRO_ENB);
1272 CSR_WRITE_4(sc, ALC_PCIE_PHYMISC,
1273 CSR_READ_4(sc, ALC_PCIE_PHYMISC) |
1274 PCIE_PHYMISC_FORCE_RCV_DET);
1275 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B &&
1276 sc->alc_rev == ATHEROS_AR8152_B_V10) {
1277 val = CSR_READ_4(sc, ALC_PCIE_PHYMISC2);
1278 val &= ~(PCIE_PHYMISC2_SERDES_CDR_MASK |
1279 PCIE_PHYMISC2_SERDES_TH_MASK);
1280 val |= 3 << PCIE_PHYMISC2_SERDES_CDR_SHIFT;
1281 val |= 3 << PCIE_PHYMISC2_SERDES_TH_SHIFT;
1282 CSR_WRITE_4(sc, ALC_PCIE_PHYMISC2, val);
1284 /* Disable ASPM L0S and L1. */
1285 cap = CSR_READ_2(sc, sc->alc_expcap + PCIER_LINK_CAP);
1286 if ((cap & PCIEM_LINK_CAP_ASPM) != 0) {
1287 ctl = CSR_READ_2(sc, sc->alc_expcap + PCIER_LINK_CTL);
1288 if ((ctl & PCIEM_LINK_CTL_RCB) != 0)
1289 sc->alc_rcb = DMA_CFG_RCB_128;
1291 device_printf(sc->alc_dev, "RCB %u bytes\n",
1292 sc->alc_rcb == DMA_CFG_RCB_64 ? 64 : 128);
1293 state = ctl & PCIEM_LINK_CTL_ASPMC;
1294 if (state & PCIEM_LINK_CTL_ASPMC_L0S)
1295 sc->alc_flags |= ALC_FLAG_L0S;
1296 if (state & PCIEM_LINK_CTL_ASPMC_L1)
1297 sc->alc_flags |= ALC_FLAG_L1S;
1299 device_printf(sc->alc_dev, "ASPM %s %s\n",
1301 state == 0 ? "disabled" : "enabled");
1302 alc_disable_l0s_l1(sc);
1305 device_printf(sc->alc_dev,
1306 "no ASPM support\n");
1309 val = CSR_READ_4(sc, ALC_PDLL_TRNS1);
1310 val &= ~PDLL_TRNS1_D3PLLOFF_ENB;
1311 CSR_WRITE_4(sc, ALC_PDLL_TRNS1, val);
1312 val = CSR_READ_4(sc, ALC_MASTER_CFG);
1313 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1 &&
1314 (sc->alc_rev & 0x01) != 0) {
1315 if ((val & MASTER_WAKEN_25M) == 0 ||
1316 (val & MASTER_CLK_SEL_DIS) == 0) {
1317 val |= MASTER_WAKEN_25M | MASTER_CLK_SEL_DIS;
1318 CSR_WRITE_4(sc, ALC_MASTER_CFG, val);
1321 if ((val & MASTER_WAKEN_25M) == 0 ||
1322 (val & MASTER_CLK_SEL_DIS) != 0) {
1323 val |= MASTER_WAKEN_25M;
1324 val &= ~MASTER_CLK_SEL_DIS;
1325 CSR_WRITE_4(sc, ALC_MASTER_CFG, val);
1329 alc_aspm(sc, 1, IFM_UNKNOWN);
1333 alc_config_msi(struct alc_softc *sc)
1337 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
1339 * It seems interrupt moderation is controlled by
1340 * ALC_MSI_RETRANS_TIMER register if MSI/MSIX is active.
1341 * Driver uses RX interrupt moderation parameter to
1342 * program ALC_MSI_RETRANS_TIMER register.
1344 ctl = CSR_READ_4(sc, ALC_MSI_RETRANS_TIMER);
1345 ctl &= ~MSI_RETRANS_TIMER_MASK;
1346 ctl &= ~MSI_RETRANS_MASK_SEL_LINE;
1347 mod = ALC_USECS(sc->alc_int_rx_mod);
1351 if ((sc->alc_flags & ALC_FLAG_MSIX) != 0)
1352 CSR_WRITE_4(sc, ALC_MSI_RETRANS_TIMER, ctl |
1353 MSI_RETRANS_MASK_SEL_STD);
1354 else if ((sc->alc_flags & ALC_FLAG_MSI) != 0)
1355 CSR_WRITE_4(sc, ALC_MSI_RETRANS_TIMER, ctl |
1356 MSI_RETRANS_MASK_SEL_LINE);
1358 CSR_WRITE_4(sc, ALC_MSI_RETRANS_TIMER, 0);
1363 alc_attach(device_t dev)
1365 struct alc_softc *sc;
1367 int base, error, i, msic, msixc;
1371 sc = device_get_softc(dev);
1373 sc->alc_rev = pci_get_revid(dev);
1375 mtx_init(&sc->alc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
1377 callout_init_mtx(&sc->alc_tick_ch, &sc->alc_mtx, 0);
1378 TASK_INIT(&sc->alc_int_task, 0, alc_int_task, sc);
1379 sc->alc_ident = alc_find_ident(dev);
1381 /* Map the device. */
1382 pci_enable_busmaster(dev);
1383 sc->alc_res_spec = alc_res_spec_mem;
1384 sc->alc_irq_spec = alc_irq_spec_legacy;
1385 error = bus_alloc_resources(dev, sc->alc_res_spec, sc->alc_res);
1387 device_printf(dev, "cannot allocate memory resources.\n");
1391 /* Set PHY address. */
1392 sc->alc_phyaddr = ALC_PHY_ADDR;
1395 * One odd thing is AR8132 uses the same PHY hardware(F1
1396 * gigabit PHY) of AR8131. So atphy(4) of AR8132 reports
1397 * the PHY supports 1000Mbps but that's not true. The PHY
1398 * used in AR8132 can't establish gigabit link even if it
1399 * shows the same PHY model/revision number of AR8131.
1401 switch (sc->alc_ident->deviceid) {
1402 case DEVICEID_ATHEROS_E2200:
1403 case DEVICEID_ATHEROS_E2400:
1404 sc->alc_flags |= ALC_FLAG_E2X00;
1406 case DEVICEID_ATHEROS_AR8161:
1407 if (pci_get_subvendor(dev) == VENDORID_ATHEROS &&
1408 pci_get_subdevice(dev) == 0x0091 && sc->alc_rev == 0)
1409 sc->alc_flags |= ALC_FLAG_LINK_WAR;
1411 case DEVICEID_ATHEROS_AR8171:
1412 sc->alc_flags |= ALC_FLAG_AR816X_FAMILY;
1414 case DEVICEID_ATHEROS_AR8162:
1415 case DEVICEID_ATHEROS_AR8172:
1416 sc->alc_flags |= ALC_FLAG_FASTETHER | ALC_FLAG_AR816X_FAMILY;
1418 case DEVICEID_ATHEROS_AR8152_B:
1419 case DEVICEID_ATHEROS_AR8152_B2:
1420 sc->alc_flags |= ALC_FLAG_APS;
1422 case DEVICEID_ATHEROS_AR8132:
1423 sc->alc_flags |= ALC_FLAG_FASTETHER;
1425 case DEVICEID_ATHEROS_AR8151:
1426 case DEVICEID_ATHEROS_AR8151_V2:
1427 sc->alc_flags |= ALC_FLAG_APS;
1432 sc->alc_flags |= ALC_FLAG_JUMBO;
1435 * It seems that AR813x/AR815x has silicon bug for SMB. In
1436 * addition, Atheros said that enabling SMB wouldn't improve
1437 * performance. However I think it's bad to access lots of
1438 * registers to extract MAC statistics.
1440 sc->alc_flags |= ALC_FLAG_SMB_BUG;
1442 * Don't use Tx CMB. It is known to have silicon bug.
1444 sc->alc_flags |= ALC_FLAG_CMB_BUG;
1445 sc->alc_chip_rev = CSR_READ_4(sc, ALC_MASTER_CFG) >>
1446 MASTER_CHIP_REV_SHIFT;
1448 device_printf(dev, "PCI device revision : 0x%04x\n",
1450 device_printf(dev, "Chip id/revision : 0x%04x\n",
1452 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
1453 device_printf(dev, "AR816x revision : 0x%x\n",
1454 AR816X_REV(sc->alc_rev));
1456 device_printf(dev, "%u Tx FIFO, %u Rx FIFO\n",
1457 CSR_READ_4(sc, ALC_SRAM_TX_FIFO_LEN) * 8,
1458 CSR_READ_4(sc, ALC_SRAM_RX_FIFO_LEN) * 8);
1460 /* Initialize DMA parameters. */
1461 sc->alc_dma_rd_burst = 0;
1462 sc->alc_dma_wr_burst = 0;
1463 sc->alc_rcb = DMA_CFG_RCB_64;
1464 if (pci_find_cap(dev, PCIY_EXPRESS, &base) == 0) {
1465 sc->alc_flags |= ALC_FLAG_PCIE;
1466 sc->alc_expcap = base;
1467 burst = CSR_READ_2(sc, base + PCIER_DEVICE_CTL);
1468 sc->alc_dma_rd_burst =
1469 (burst & PCIEM_CTL_MAX_READ_REQUEST) >> 12;
1470 sc->alc_dma_wr_burst = (burst & PCIEM_CTL_MAX_PAYLOAD) >> 5;
1472 device_printf(dev, "Read request size : %u bytes.\n",
1473 alc_dma_burst[sc->alc_dma_rd_burst]);
1474 device_printf(dev, "TLP payload size : %u bytes.\n",
1475 alc_dma_burst[sc->alc_dma_wr_burst]);
1477 if (alc_dma_burst[sc->alc_dma_rd_burst] > 1024)
1478 sc->alc_dma_rd_burst = 3;
1479 if (alc_dma_burst[sc->alc_dma_wr_burst] > 1024)
1480 sc->alc_dma_wr_burst = 3;
1482 * Force maximum payload size to 128 bytes for E2200/E2400.
1483 * Otherwise it triggers DMA write error.
1485 if ((sc->alc_flags & ALC_FLAG_E2X00) != 0)
1486 sc->alc_dma_wr_burst = 0;
1493 /* Reset the ethernet controller. */
1497 /* Allocate IRQ resources. */
1498 msixc = pci_msix_count(dev);
1499 msic = pci_msi_count(dev);
1501 device_printf(dev, "MSIX count : %d\n", msixc);
1502 device_printf(dev, "MSI count : %d\n", msic);
1509 * Prefer MSIX over MSI.
1510 * AR816x controller has a silicon bug that MSI interrupt
1511 * does not assert if PCIM_CMD_INTxDIS bit of command
1512 * register is set. pci(4) was taught to handle that case.
1514 if (msix_disable == 0 || msi_disable == 0) {
1515 if (msix_disable == 0 && msixc > 0 &&
1516 pci_alloc_msix(dev, &msixc) == 0) {
1519 "Using %d MSIX message(s).\n", msixc);
1520 sc->alc_flags |= ALC_FLAG_MSIX;
1521 sc->alc_irq_spec = alc_irq_spec_msix;
1523 pci_release_msi(dev);
1525 if (msi_disable == 0 && (sc->alc_flags & ALC_FLAG_MSIX) == 0 &&
1526 msic > 0 && pci_alloc_msi(dev, &msic) == 0) {
1529 "Using %d MSI message(s).\n", msic);
1530 sc->alc_flags |= ALC_FLAG_MSI;
1531 sc->alc_irq_spec = alc_irq_spec_msi;
1533 pci_release_msi(dev);
1537 error = bus_alloc_resources(dev, sc->alc_irq_spec, sc->alc_irq);
1539 device_printf(dev, "cannot allocate IRQ resources.\n");
1543 /* Create device sysctl node. */
1544 alc_sysctl_node(sc);
1546 if ((error = alc_dma_alloc(sc)) != 0)
1549 /* Load station address. */
1550 alc_get_macaddr(sc);
1552 ifp = sc->alc_ifp = if_alloc(IFT_ETHER);
1554 device_printf(dev, "cannot allocate ifnet structure.\n");
1560 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
1561 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
1562 ifp->if_ioctl = alc_ioctl;
1563 ifp->if_start = alc_start;
1564 ifp->if_init = alc_init;
1565 ifp->if_snd.ifq_drv_maxlen = ALC_TX_RING_CNT - 1;
1566 IFQ_SET_MAXLEN(&ifp->if_snd, ifp->if_snd.ifq_drv_maxlen);
1567 IFQ_SET_READY(&ifp->if_snd);
1568 ifp->if_capabilities = IFCAP_TXCSUM | IFCAP_TSO4;
1569 ifp->if_hwassist = ALC_CSUM_FEATURES | CSUM_TSO;
1570 if (pci_find_cap(dev, PCIY_PMG, &base) == 0) {
1571 ifp->if_capabilities |= IFCAP_WOL_MAGIC | IFCAP_WOL_MCAST;
1572 sc->alc_flags |= ALC_FLAG_PM;
1573 sc->alc_pmcap = base;
1575 ifp->if_capenable = ifp->if_capabilities;
1577 /* Set up MII bus. */
1578 error = mii_attach(dev, &sc->alc_miibus, ifp, alc_mediachange,
1579 alc_mediastatus, BMSR_DEFCAPMASK, sc->alc_phyaddr, MII_OFFSET_ANY,
1582 device_printf(dev, "attaching PHYs failed\n");
1586 ether_ifattach(ifp, sc->alc_eaddr);
1588 /* VLAN capability setup. */
1589 ifp->if_capabilities |= IFCAP_VLAN_MTU | IFCAP_VLAN_HWTAGGING |
1590 IFCAP_VLAN_HWCSUM | IFCAP_VLAN_HWTSO;
1591 ifp->if_capenable = ifp->if_capabilities;
1594 * It seems enabling Tx checksum offloading makes more trouble.
1595 * Sometimes the controller does not receive any frames when
1596 * Tx checksum offloading is enabled. I'm not sure whether this
1597 * is a bug in Tx checksum offloading logic or I got broken
1598 * sample boards. To safety, don't enable Tx checksum offloading
1599 * by default but give chance to users to toggle it if they know
1600 * their controllers work without problems.
1601 * Fortunately, Tx checksum offloading for AR816x family
1604 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
1605 ifp->if_capenable &= ~IFCAP_TXCSUM;
1606 ifp->if_hwassist &= ~ALC_CSUM_FEATURES;
1609 /* Tell the upper layer(s) we support long frames. */
1610 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
1612 /* Create local taskq. */
1613 sc->alc_tq = taskqueue_create_fast("alc_taskq", M_WAITOK,
1614 taskqueue_thread_enqueue, &sc->alc_tq);
1615 if (sc->alc_tq == NULL) {
1616 device_printf(dev, "could not create taskqueue.\n");
1617 ether_ifdetach(ifp);
1621 taskqueue_start_threads(&sc->alc_tq, 1, PI_NET, "%s taskq",
1622 device_get_nameunit(sc->alc_dev));
1625 if ((sc->alc_flags & ALC_FLAG_MSIX) != 0)
1626 msic = ALC_MSIX_MESSAGES;
1627 else if ((sc->alc_flags & ALC_FLAG_MSI) != 0)
1628 msic = ALC_MSI_MESSAGES;
1631 for (i = 0; i < msic; i++) {
1632 error = bus_setup_intr(dev, sc->alc_irq[i],
1633 INTR_TYPE_NET | INTR_MPSAFE, alc_intr, NULL, sc,
1634 &sc->alc_intrhand[i]);
1639 device_printf(dev, "could not set up interrupt handler.\n");
1640 taskqueue_free(sc->alc_tq);
1642 ether_ifdetach(ifp);
1654 alc_detach(device_t dev)
1656 struct alc_softc *sc;
1660 sc = device_get_softc(dev);
1663 if (device_is_attached(dev)) {
1664 ether_ifdetach(ifp);
1668 callout_drain(&sc->alc_tick_ch);
1669 taskqueue_drain(sc->alc_tq, &sc->alc_int_task);
1672 if (sc->alc_tq != NULL) {
1673 taskqueue_drain(sc->alc_tq, &sc->alc_int_task);
1674 taskqueue_free(sc->alc_tq);
1678 if (sc->alc_miibus != NULL) {
1679 device_delete_child(dev, sc->alc_miibus);
1680 sc->alc_miibus = NULL;
1682 bus_generic_detach(dev);
1690 if ((sc->alc_flags & ALC_FLAG_MSIX) != 0)
1691 msic = ALC_MSIX_MESSAGES;
1692 else if ((sc->alc_flags & ALC_FLAG_MSI) != 0)
1693 msic = ALC_MSI_MESSAGES;
1696 for (i = 0; i < msic; i++) {
1697 if (sc->alc_intrhand[i] != NULL) {
1698 bus_teardown_intr(dev, sc->alc_irq[i],
1699 sc->alc_intrhand[i]);
1700 sc->alc_intrhand[i] = NULL;
1703 if (sc->alc_res[0] != NULL)
1705 bus_release_resources(dev, sc->alc_irq_spec, sc->alc_irq);
1706 if ((sc->alc_flags & (ALC_FLAG_MSI | ALC_FLAG_MSIX)) != 0)
1707 pci_release_msi(dev);
1708 bus_release_resources(dev, sc->alc_res_spec, sc->alc_res);
1709 mtx_destroy(&sc->alc_mtx);
1714 #define ALC_SYSCTL_STAT_ADD32(c, h, n, p, d) \
1715 SYSCTL_ADD_UINT(c, h, OID_AUTO, n, CTLFLAG_RD, p, 0, d)
1716 #define ALC_SYSCTL_STAT_ADD64(c, h, n, p, d) \
1717 SYSCTL_ADD_UQUAD(c, h, OID_AUTO, n, CTLFLAG_RD, p, d)
1720 alc_sysctl_node(struct alc_softc *sc)
1722 struct sysctl_ctx_list *ctx;
1723 struct sysctl_oid_list *child, *parent;
1724 struct sysctl_oid *tree;
1725 struct alc_hw_stats *stats;
1728 stats = &sc->alc_stats;
1729 ctx = device_get_sysctl_ctx(sc->alc_dev);
1730 child = SYSCTL_CHILDREN(device_get_sysctl_tree(sc->alc_dev));
1732 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "int_rx_mod",
1733 CTLTYPE_INT | CTLFLAG_RW, &sc->alc_int_rx_mod, 0,
1734 sysctl_hw_alc_int_mod, "I", "alc Rx interrupt moderation");
1735 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "int_tx_mod",
1736 CTLTYPE_INT | CTLFLAG_RW, &sc->alc_int_tx_mod, 0,
1737 sysctl_hw_alc_int_mod, "I", "alc Tx interrupt moderation");
1738 /* Pull in device tunables. */
1739 sc->alc_int_rx_mod = ALC_IM_RX_TIMER_DEFAULT;
1740 error = resource_int_value(device_get_name(sc->alc_dev),
1741 device_get_unit(sc->alc_dev), "int_rx_mod", &sc->alc_int_rx_mod);
1743 if (sc->alc_int_rx_mod < ALC_IM_TIMER_MIN ||
1744 sc->alc_int_rx_mod > ALC_IM_TIMER_MAX) {
1745 device_printf(sc->alc_dev, "int_rx_mod value out of "
1746 "range; using default: %d\n",
1747 ALC_IM_RX_TIMER_DEFAULT);
1748 sc->alc_int_rx_mod = ALC_IM_RX_TIMER_DEFAULT;
1751 sc->alc_int_tx_mod = ALC_IM_TX_TIMER_DEFAULT;
1752 error = resource_int_value(device_get_name(sc->alc_dev),
1753 device_get_unit(sc->alc_dev), "int_tx_mod", &sc->alc_int_tx_mod);
1755 if (sc->alc_int_tx_mod < ALC_IM_TIMER_MIN ||
1756 sc->alc_int_tx_mod > ALC_IM_TIMER_MAX) {
1757 device_printf(sc->alc_dev, "int_tx_mod value out of "
1758 "range; using default: %d\n",
1759 ALC_IM_TX_TIMER_DEFAULT);
1760 sc->alc_int_tx_mod = ALC_IM_TX_TIMER_DEFAULT;
1763 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "process_limit",
1764 CTLTYPE_INT | CTLFLAG_RW, &sc->alc_process_limit, 0,
1765 sysctl_hw_alc_proc_limit, "I",
1766 "max number of Rx events to process");
1767 /* Pull in device tunables. */
1768 sc->alc_process_limit = ALC_PROC_DEFAULT;
1769 error = resource_int_value(device_get_name(sc->alc_dev),
1770 device_get_unit(sc->alc_dev), "process_limit",
1771 &sc->alc_process_limit);
1773 if (sc->alc_process_limit < ALC_PROC_MIN ||
1774 sc->alc_process_limit > ALC_PROC_MAX) {
1775 device_printf(sc->alc_dev,
1776 "process_limit value out of range; "
1777 "using default: %d\n", ALC_PROC_DEFAULT);
1778 sc->alc_process_limit = ALC_PROC_DEFAULT;
1782 tree = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "stats", CTLFLAG_RD,
1783 NULL, "ALC statistics");
1784 parent = SYSCTL_CHILDREN(tree);
1786 /* Rx statistics. */
1787 tree = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "rx", CTLFLAG_RD,
1788 NULL, "Rx MAC statistics");
1789 child = SYSCTL_CHILDREN(tree);
1790 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_frames",
1791 &stats->rx_frames, "Good frames");
1792 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_bcast_frames",
1793 &stats->rx_bcast_frames, "Good broadcast frames");
1794 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_mcast_frames",
1795 &stats->rx_mcast_frames, "Good multicast frames");
1796 ALC_SYSCTL_STAT_ADD32(ctx, child, "pause_frames",
1797 &stats->rx_pause_frames, "Pause control frames");
1798 ALC_SYSCTL_STAT_ADD32(ctx, child, "control_frames",
1799 &stats->rx_control_frames, "Control frames");
1800 ALC_SYSCTL_STAT_ADD32(ctx, child, "crc_errs",
1801 &stats->rx_crcerrs, "CRC errors");
1802 ALC_SYSCTL_STAT_ADD32(ctx, child, "len_errs",
1803 &stats->rx_lenerrs, "Frames with length mismatched");
1804 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_octets",
1805 &stats->rx_bytes, "Good octets");
1806 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_bcast_octets",
1807 &stats->rx_bcast_bytes, "Good broadcast octets");
1808 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_mcast_octets",
1809 &stats->rx_mcast_bytes, "Good multicast octets");
1810 ALC_SYSCTL_STAT_ADD32(ctx, child, "runts",
1811 &stats->rx_runts, "Too short frames");
1812 ALC_SYSCTL_STAT_ADD32(ctx, child, "fragments",
1813 &stats->rx_fragments, "Fragmented frames");
1814 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_64",
1815 &stats->rx_pkts_64, "64 bytes frames");
1816 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_65_127",
1817 &stats->rx_pkts_65_127, "65 to 127 bytes frames");
1818 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_128_255",
1819 &stats->rx_pkts_128_255, "128 to 255 bytes frames");
1820 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_256_511",
1821 &stats->rx_pkts_256_511, "256 to 511 bytes frames");
1822 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_512_1023",
1823 &stats->rx_pkts_512_1023, "512 to 1023 bytes frames");
1824 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_1024_1518",
1825 &stats->rx_pkts_1024_1518, "1024 to 1518 bytes frames");
1826 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_1519_max",
1827 &stats->rx_pkts_1519_max, "1519 to max frames");
1828 ALC_SYSCTL_STAT_ADD32(ctx, child, "trunc_errs",
1829 &stats->rx_pkts_truncated, "Truncated frames due to MTU size");
1830 ALC_SYSCTL_STAT_ADD32(ctx, child, "fifo_oflows",
1831 &stats->rx_fifo_oflows, "FIFO overflows");
1832 ALC_SYSCTL_STAT_ADD32(ctx, child, "rrs_errs",
1833 &stats->rx_rrs_errs, "Return status write-back errors");
1834 ALC_SYSCTL_STAT_ADD32(ctx, child, "align_errs",
1835 &stats->rx_alignerrs, "Alignment errors");
1836 ALC_SYSCTL_STAT_ADD32(ctx, child, "filtered",
1837 &stats->rx_pkts_filtered,
1838 "Frames dropped due to address filtering");
1840 /* Tx statistics. */
1841 tree = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "tx", CTLFLAG_RD,
1842 NULL, "Tx MAC statistics");
1843 child = SYSCTL_CHILDREN(tree);
1844 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_frames",
1845 &stats->tx_frames, "Good frames");
1846 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_bcast_frames",
1847 &stats->tx_bcast_frames, "Good broadcast frames");
1848 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_mcast_frames",
1849 &stats->tx_mcast_frames, "Good multicast frames");
1850 ALC_SYSCTL_STAT_ADD32(ctx, child, "pause_frames",
1851 &stats->tx_pause_frames, "Pause control frames");
1852 ALC_SYSCTL_STAT_ADD32(ctx, child, "control_frames",
1853 &stats->tx_control_frames, "Control frames");
1854 ALC_SYSCTL_STAT_ADD32(ctx, child, "excess_defers",
1855 &stats->tx_excess_defer, "Frames with excessive derferrals");
1856 ALC_SYSCTL_STAT_ADD32(ctx, child, "defers",
1857 &stats->tx_excess_defer, "Frames with derferrals");
1858 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_octets",
1859 &stats->tx_bytes, "Good octets");
1860 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_bcast_octets",
1861 &stats->tx_bcast_bytes, "Good broadcast octets");
1862 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_mcast_octets",
1863 &stats->tx_mcast_bytes, "Good multicast octets");
1864 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_64",
1865 &stats->tx_pkts_64, "64 bytes frames");
1866 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_65_127",
1867 &stats->tx_pkts_65_127, "65 to 127 bytes frames");
1868 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_128_255",
1869 &stats->tx_pkts_128_255, "128 to 255 bytes frames");
1870 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_256_511",
1871 &stats->tx_pkts_256_511, "256 to 511 bytes frames");
1872 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_512_1023",
1873 &stats->tx_pkts_512_1023, "512 to 1023 bytes frames");
1874 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_1024_1518",
1875 &stats->tx_pkts_1024_1518, "1024 to 1518 bytes frames");
1876 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_1519_max",
1877 &stats->tx_pkts_1519_max, "1519 to max frames");
1878 ALC_SYSCTL_STAT_ADD32(ctx, child, "single_colls",
1879 &stats->tx_single_colls, "Single collisions");
1880 ALC_SYSCTL_STAT_ADD32(ctx, child, "multi_colls",
1881 &stats->tx_multi_colls, "Multiple collisions");
1882 ALC_SYSCTL_STAT_ADD32(ctx, child, "late_colls",
1883 &stats->tx_late_colls, "Late collisions");
1884 ALC_SYSCTL_STAT_ADD32(ctx, child, "excess_colls",
1885 &stats->tx_excess_colls, "Excessive collisions");
1886 ALC_SYSCTL_STAT_ADD32(ctx, child, "underruns",
1887 &stats->tx_underrun, "FIFO underruns");
1888 ALC_SYSCTL_STAT_ADD32(ctx, child, "desc_underruns",
1889 &stats->tx_desc_underrun, "Descriptor write-back errors");
1890 ALC_SYSCTL_STAT_ADD32(ctx, child, "len_errs",
1891 &stats->tx_lenerrs, "Frames with length mismatched");
1892 ALC_SYSCTL_STAT_ADD32(ctx, child, "trunc_errs",
1893 &stats->tx_pkts_truncated, "Truncated frames due to MTU size");
1896 #undef ALC_SYSCTL_STAT_ADD32
1897 #undef ALC_SYSCTL_STAT_ADD64
1899 struct alc_dmamap_arg {
1900 bus_addr_t alc_busaddr;
1904 alc_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
1906 struct alc_dmamap_arg *ctx;
1911 KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs));
1913 ctx = (struct alc_dmamap_arg *)arg;
1914 ctx->alc_busaddr = segs[0].ds_addr;
1918 * Normal and high Tx descriptors shares single Tx high address.
1919 * Four Rx descriptor/return rings and CMB shares the same Rx
1923 alc_check_boundary(struct alc_softc *sc)
1925 bus_addr_t cmb_end, rx_ring_end, rr_ring_end, tx_ring_end;
1927 rx_ring_end = sc->alc_rdata.alc_rx_ring_paddr + ALC_RX_RING_SZ;
1928 rr_ring_end = sc->alc_rdata.alc_rr_ring_paddr + ALC_RR_RING_SZ;
1929 cmb_end = sc->alc_rdata.alc_cmb_paddr + ALC_CMB_SZ;
1930 tx_ring_end = sc->alc_rdata.alc_tx_ring_paddr + ALC_TX_RING_SZ;
1932 /* 4GB boundary crossing is not allowed. */
1933 if ((ALC_ADDR_HI(rx_ring_end) !=
1934 ALC_ADDR_HI(sc->alc_rdata.alc_rx_ring_paddr)) ||
1935 (ALC_ADDR_HI(rr_ring_end) !=
1936 ALC_ADDR_HI(sc->alc_rdata.alc_rr_ring_paddr)) ||
1937 (ALC_ADDR_HI(cmb_end) !=
1938 ALC_ADDR_HI(sc->alc_rdata.alc_cmb_paddr)) ||
1939 (ALC_ADDR_HI(tx_ring_end) !=
1940 ALC_ADDR_HI(sc->alc_rdata.alc_tx_ring_paddr)))
1943 * Make sure Rx return descriptor/Rx descriptor/CMB use
1944 * the same high address.
1946 if ((ALC_ADDR_HI(rx_ring_end) != ALC_ADDR_HI(rr_ring_end)) ||
1947 (ALC_ADDR_HI(rx_ring_end) != ALC_ADDR_HI(cmb_end)))
1954 alc_dma_alloc(struct alc_softc *sc)
1956 struct alc_txdesc *txd;
1957 struct alc_rxdesc *rxd;
1959 struct alc_dmamap_arg ctx;
1962 lowaddr = BUS_SPACE_MAXADDR;
1964 /* Create parent DMA tag. */
1965 error = bus_dma_tag_create(
1966 bus_get_dma_tag(sc->alc_dev), /* parent */
1967 1, 0, /* alignment, boundary */
1968 lowaddr, /* lowaddr */
1969 BUS_SPACE_MAXADDR, /* highaddr */
1970 NULL, NULL, /* filter, filterarg */
1971 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
1973 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
1975 NULL, NULL, /* lockfunc, lockarg */
1976 &sc->alc_cdata.alc_parent_tag);
1978 device_printf(sc->alc_dev,
1979 "could not create parent DMA tag.\n");
1983 /* Create DMA tag for Tx descriptor ring. */
1984 error = bus_dma_tag_create(
1985 sc->alc_cdata.alc_parent_tag, /* parent */
1986 ALC_TX_RING_ALIGN, 0, /* alignment, boundary */
1987 BUS_SPACE_MAXADDR, /* lowaddr */
1988 BUS_SPACE_MAXADDR, /* highaddr */
1989 NULL, NULL, /* filter, filterarg */
1990 ALC_TX_RING_SZ, /* maxsize */
1992 ALC_TX_RING_SZ, /* maxsegsize */
1994 NULL, NULL, /* lockfunc, lockarg */
1995 &sc->alc_cdata.alc_tx_ring_tag);
1997 device_printf(sc->alc_dev,
1998 "could not create Tx ring DMA tag.\n");
2002 /* Create DMA tag for Rx free descriptor ring. */
2003 error = bus_dma_tag_create(
2004 sc->alc_cdata.alc_parent_tag, /* parent */
2005 ALC_RX_RING_ALIGN, 0, /* alignment, boundary */
2006 BUS_SPACE_MAXADDR, /* lowaddr */
2007 BUS_SPACE_MAXADDR, /* highaddr */
2008 NULL, NULL, /* filter, filterarg */
2009 ALC_RX_RING_SZ, /* maxsize */
2011 ALC_RX_RING_SZ, /* maxsegsize */
2013 NULL, NULL, /* lockfunc, lockarg */
2014 &sc->alc_cdata.alc_rx_ring_tag);
2016 device_printf(sc->alc_dev,
2017 "could not create Rx ring DMA tag.\n");
2020 /* Create DMA tag for Rx return descriptor ring. */
2021 error = bus_dma_tag_create(
2022 sc->alc_cdata.alc_parent_tag, /* parent */
2023 ALC_RR_RING_ALIGN, 0, /* alignment, boundary */
2024 BUS_SPACE_MAXADDR, /* lowaddr */
2025 BUS_SPACE_MAXADDR, /* highaddr */
2026 NULL, NULL, /* filter, filterarg */
2027 ALC_RR_RING_SZ, /* maxsize */
2029 ALC_RR_RING_SZ, /* maxsegsize */
2031 NULL, NULL, /* lockfunc, lockarg */
2032 &sc->alc_cdata.alc_rr_ring_tag);
2034 device_printf(sc->alc_dev,
2035 "could not create Rx return ring DMA tag.\n");
2039 /* Create DMA tag for coalescing message block. */
2040 error = bus_dma_tag_create(
2041 sc->alc_cdata.alc_parent_tag, /* parent */
2042 ALC_CMB_ALIGN, 0, /* alignment, boundary */
2043 BUS_SPACE_MAXADDR, /* lowaddr */
2044 BUS_SPACE_MAXADDR, /* highaddr */
2045 NULL, NULL, /* filter, filterarg */
2046 ALC_CMB_SZ, /* maxsize */
2048 ALC_CMB_SZ, /* maxsegsize */
2050 NULL, NULL, /* lockfunc, lockarg */
2051 &sc->alc_cdata.alc_cmb_tag);
2053 device_printf(sc->alc_dev,
2054 "could not create CMB DMA tag.\n");
2057 /* Create DMA tag for status message block. */
2058 error = bus_dma_tag_create(
2059 sc->alc_cdata.alc_parent_tag, /* parent */
2060 ALC_SMB_ALIGN, 0, /* alignment, boundary */
2061 BUS_SPACE_MAXADDR, /* lowaddr */
2062 BUS_SPACE_MAXADDR, /* highaddr */
2063 NULL, NULL, /* filter, filterarg */
2064 ALC_SMB_SZ, /* maxsize */
2066 ALC_SMB_SZ, /* maxsegsize */
2068 NULL, NULL, /* lockfunc, lockarg */
2069 &sc->alc_cdata.alc_smb_tag);
2071 device_printf(sc->alc_dev,
2072 "could not create SMB DMA tag.\n");
2076 /* Allocate DMA'able memory and load the DMA map for Tx ring. */
2077 error = bus_dmamem_alloc(sc->alc_cdata.alc_tx_ring_tag,
2078 (void **)&sc->alc_rdata.alc_tx_ring,
2079 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
2080 &sc->alc_cdata.alc_tx_ring_map);
2082 device_printf(sc->alc_dev,
2083 "could not allocate DMA'able memory for Tx ring.\n");
2086 ctx.alc_busaddr = 0;
2087 error = bus_dmamap_load(sc->alc_cdata.alc_tx_ring_tag,
2088 sc->alc_cdata.alc_tx_ring_map, sc->alc_rdata.alc_tx_ring,
2089 ALC_TX_RING_SZ, alc_dmamap_cb, &ctx, 0);
2090 if (error != 0 || ctx.alc_busaddr == 0) {
2091 device_printf(sc->alc_dev,
2092 "could not load DMA'able memory for Tx ring.\n");
2095 sc->alc_rdata.alc_tx_ring_paddr = ctx.alc_busaddr;
2097 /* Allocate DMA'able memory and load the DMA map for Rx ring. */
2098 error = bus_dmamem_alloc(sc->alc_cdata.alc_rx_ring_tag,
2099 (void **)&sc->alc_rdata.alc_rx_ring,
2100 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
2101 &sc->alc_cdata.alc_rx_ring_map);
2103 device_printf(sc->alc_dev,
2104 "could not allocate DMA'able memory for Rx ring.\n");
2107 ctx.alc_busaddr = 0;
2108 error = bus_dmamap_load(sc->alc_cdata.alc_rx_ring_tag,
2109 sc->alc_cdata.alc_rx_ring_map, sc->alc_rdata.alc_rx_ring,
2110 ALC_RX_RING_SZ, alc_dmamap_cb, &ctx, 0);
2111 if (error != 0 || ctx.alc_busaddr == 0) {
2112 device_printf(sc->alc_dev,
2113 "could not load DMA'able memory for Rx ring.\n");
2116 sc->alc_rdata.alc_rx_ring_paddr = ctx.alc_busaddr;
2118 /* Allocate DMA'able memory and load the DMA map for Rx return ring. */
2119 error = bus_dmamem_alloc(sc->alc_cdata.alc_rr_ring_tag,
2120 (void **)&sc->alc_rdata.alc_rr_ring,
2121 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
2122 &sc->alc_cdata.alc_rr_ring_map);
2124 device_printf(sc->alc_dev,
2125 "could not allocate DMA'able memory for Rx return ring.\n");
2128 ctx.alc_busaddr = 0;
2129 error = bus_dmamap_load(sc->alc_cdata.alc_rr_ring_tag,
2130 sc->alc_cdata.alc_rr_ring_map, sc->alc_rdata.alc_rr_ring,
2131 ALC_RR_RING_SZ, alc_dmamap_cb, &ctx, 0);
2132 if (error != 0 || ctx.alc_busaddr == 0) {
2133 device_printf(sc->alc_dev,
2134 "could not load DMA'able memory for Tx ring.\n");
2137 sc->alc_rdata.alc_rr_ring_paddr = ctx.alc_busaddr;
2139 /* Allocate DMA'able memory and load the DMA map for CMB. */
2140 error = bus_dmamem_alloc(sc->alc_cdata.alc_cmb_tag,
2141 (void **)&sc->alc_rdata.alc_cmb,
2142 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
2143 &sc->alc_cdata.alc_cmb_map);
2145 device_printf(sc->alc_dev,
2146 "could not allocate DMA'able memory for CMB.\n");
2149 ctx.alc_busaddr = 0;
2150 error = bus_dmamap_load(sc->alc_cdata.alc_cmb_tag,
2151 sc->alc_cdata.alc_cmb_map, sc->alc_rdata.alc_cmb,
2152 ALC_CMB_SZ, alc_dmamap_cb, &ctx, 0);
2153 if (error != 0 || ctx.alc_busaddr == 0) {
2154 device_printf(sc->alc_dev,
2155 "could not load DMA'able memory for CMB.\n");
2158 sc->alc_rdata.alc_cmb_paddr = ctx.alc_busaddr;
2160 /* Allocate DMA'able memory and load the DMA map for SMB. */
2161 error = bus_dmamem_alloc(sc->alc_cdata.alc_smb_tag,
2162 (void **)&sc->alc_rdata.alc_smb,
2163 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
2164 &sc->alc_cdata.alc_smb_map);
2166 device_printf(sc->alc_dev,
2167 "could not allocate DMA'able memory for SMB.\n");
2170 ctx.alc_busaddr = 0;
2171 error = bus_dmamap_load(sc->alc_cdata.alc_smb_tag,
2172 sc->alc_cdata.alc_smb_map, sc->alc_rdata.alc_smb,
2173 ALC_SMB_SZ, alc_dmamap_cb, &ctx, 0);
2174 if (error != 0 || ctx.alc_busaddr == 0) {
2175 device_printf(sc->alc_dev,
2176 "could not load DMA'able memory for CMB.\n");
2179 sc->alc_rdata.alc_smb_paddr = ctx.alc_busaddr;
2181 /* Make sure we've not crossed 4GB boundary. */
2182 if (lowaddr != BUS_SPACE_MAXADDR_32BIT &&
2183 (error = alc_check_boundary(sc)) != 0) {
2184 device_printf(sc->alc_dev, "4GB boundary crossed, "
2185 "switching to 32bit DMA addressing mode.\n");
2188 * Limit max allowable DMA address space to 32bit
2191 lowaddr = BUS_SPACE_MAXADDR_32BIT;
2196 * Create Tx buffer parent tag.
2197 * AR81[3567]x allows 64bit DMA addressing of Tx/Rx buffers
2198 * so it needs separate parent DMA tag as parent DMA address
2199 * space could be restricted to be within 32bit address space
2200 * by 4GB boundary crossing.
2202 error = bus_dma_tag_create(
2203 bus_get_dma_tag(sc->alc_dev), /* parent */
2204 1, 0, /* alignment, boundary */
2205 BUS_SPACE_MAXADDR, /* lowaddr */
2206 BUS_SPACE_MAXADDR, /* highaddr */
2207 NULL, NULL, /* filter, filterarg */
2208 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
2210 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
2212 NULL, NULL, /* lockfunc, lockarg */
2213 &sc->alc_cdata.alc_buffer_tag);
2215 device_printf(sc->alc_dev,
2216 "could not create parent buffer DMA tag.\n");
2220 /* Create DMA tag for Tx buffers. */
2221 error = bus_dma_tag_create(
2222 sc->alc_cdata.alc_buffer_tag, /* parent */
2223 1, 0, /* alignment, boundary */
2224 BUS_SPACE_MAXADDR, /* lowaddr */
2225 BUS_SPACE_MAXADDR, /* highaddr */
2226 NULL, NULL, /* filter, filterarg */
2227 ALC_TSO_MAXSIZE, /* maxsize */
2228 ALC_MAXTXSEGS, /* nsegments */
2229 ALC_TSO_MAXSEGSIZE, /* maxsegsize */
2231 NULL, NULL, /* lockfunc, lockarg */
2232 &sc->alc_cdata.alc_tx_tag);
2234 device_printf(sc->alc_dev, "could not create Tx DMA tag.\n");
2238 /* Create DMA tag for Rx buffers. */
2239 error = bus_dma_tag_create(
2240 sc->alc_cdata.alc_buffer_tag, /* parent */
2241 ALC_RX_BUF_ALIGN, 0, /* alignment, boundary */
2242 BUS_SPACE_MAXADDR, /* lowaddr */
2243 BUS_SPACE_MAXADDR, /* highaddr */
2244 NULL, NULL, /* filter, filterarg */
2245 MCLBYTES, /* maxsize */
2247 MCLBYTES, /* maxsegsize */
2249 NULL, NULL, /* lockfunc, lockarg */
2250 &sc->alc_cdata.alc_rx_tag);
2252 device_printf(sc->alc_dev, "could not create Rx DMA tag.\n");
2255 /* Create DMA maps for Tx buffers. */
2256 for (i = 0; i < ALC_TX_RING_CNT; i++) {
2257 txd = &sc->alc_cdata.alc_txdesc[i];
2259 txd->tx_dmamap = NULL;
2260 error = bus_dmamap_create(sc->alc_cdata.alc_tx_tag, 0,
2263 device_printf(sc->alc_dev,
2264 "could not create Tx dmamap.\n");
2268 /* Create DMA maps for Rx buffers. */
2269 if ((error = bus_dmamap_create(sc->alc_cdata.alc_rx_tag, 0,
2270 &sc->alc_cdata.alc_rx_sparemap)) != 0) {
2271 device_printf(sc->alc_dev,
2272 "could not create spare Rx dmamap.\n");
2275 for (i = 0; i < ALC_RX_RING_CNT; i++) {
2276 rxd = &sc->alc_cdata.alc_rxdesc[i];
2278 rxd->rx_dmamap = NULL;
2279 error = bus_dmamap_create(sc->alc_cdata.alc_rx_tag, 0,
2282 device_printf(sc->alc_dev,
2283 "could not create Rx dmamap.\n");
2293 alc_dma_free(struct alc_softc *sc)
2295 struct alc_txdesc *txd;
2296 struct alc_rxdesc *rxd;
2300 if (sc->alc_cdata.alc_tx_tag != NULL) {
2301 for (i = 0; i < ALC_TX_RING_CNT; i++) {
2302 txd = &sc->alc_cdata.alc_txdesc[i];
2303 if (txd->tx_dmamap != NULL) {
2304 bus_dmamap_destroy(sc->alc_cdata.alc_tx_tag,
2306 txd->tx_dmamap = NULL;
2309 bus_dma_tag_destroy(sc->alc_cdata.alc_tx_tag);
2310 sc->alc_cdata.alc_tx_tag = NULL;
2313 if (sc->alc_cdata.alc_rx_tag != NULL) {
2314 for (i = 0; i < ALC_RX_RING_CNT; i++) {
2315 rxd = &sc->alc_cdata.alc_rxdesc[i];
2316 if (rxd->rx_dmamap != NULL) {
2317 bus_dmamap_destroy(sc->alc_cdata.alc_rx_tag,
2319 rxd->rx_dmamap = NULL;
2322 if (sc->alc_cdata.alc_rx_sparemap != NULL) {
2323 bus_dmamap_destroy(sc->alc_cdata.alc_rx_tag,
2324 sc->alc_cdata.alc_rx_sparemap);
2325 sc->alc_cdata.alc_rx_sparemap = NULL;
2327 bus_dma_tag_destroy(sc->alc_cdata.alc_rx_tag);
2328 sc->alc_cdata.alc_rx_tag = NULL;
2330 /* Tx descriptor ring. */
2331 if (sc->alc_cdata.alc_tx_ring_tag != NULL) {
2332 if (sc->alc_cdata.alc_tx_ring_map != NULL)
2333 bus_dmamap_unload(sc->alc_cdata.alc_tx_ring_tag,
2334 sc->alc_cdata.alc_tx_ring_map);
2335 if (sc->alc_cdata.alc_tx_ring_map != NULL &&
2336 sc->alc_rdata.alc_tx_ring != NULL)
2337 bus_dmamem_free(sc->alc_cdata.alc_tx_ring_tag,
2338 sc->alc_rdata.alc_tx_ring,
2339 sc->alc_cdata.alc_tx_ring_map);
2340 sc->alc_rdata.alc_tx_ring = NULL;
2341 sc->alc_cdata.alc_tx_ring_map = NULL;
2342 bus_dma_tag_destroy(sc->alc_cdata.alc_tx_ring_tag);
2343 sc->alc_cdata.alc_tx_ring_tag = NULL;
2346 if (sc->alc_cdata.alc_rx_ring_tag != NULL) {
2347 if (sc->alc_cdata.alc_rx_ring_map != NULL)
2348 bus_dmamap_unload(sc->alc_cdata.alc_rx_ring_tag,
2349 sc->alc_cdata.alc_rx_ring_map);
2350 if (sc->alc_cdata.alc_rx_ring_map != NULL &&
2351 sc->alc_rdata.alc_rx_ring != NULL)
2352 bus_dmamem_free(sc->alc_cdata.alc_rx_ring_tag,
2353 sc->alc_rdata.alc_rx_ring,
2354 sc->alc_cdata.alc_rx_ring_map);
2355 sc->alc_rdata.alc_rx_ring = NULL;
2356 sc->alc_cdata.alc_rx_ring_map = NULL;
2357 bus_dma_tag_destroy(sc->alc_cdata.alc_rx_ring_tag);
2358 sc->alc_cdata.alc_rx_ring_tag = NULL;
2360 /* Rx return ring. */
2361 if (sc->alc_cdata.alc_rr_ring_tag != NULL) {
2362 if (sc->alc_cdata.alc_rr_ring_map != NULL)
2363 bus_dmamap_unload(sc->alc_cdata.alc_rr_ring_tag,
2364 sc->alc_cdata.alc_rr_ring_map);
2365 if (sc->alc_cdata.alc_rr_ring_map != NULL &&
2366 sc->alc_rdata.alc_rr_ring != NULL)
2367 bus_dmamem_free(sc->alc_cdata.alc_rr_ring_tag,
2368 sc->alc_rdata.alc_rr_ring,
2369 sc->alc_cdata.alc_rr_ring_map);
2370 sc->alc_rdata.alc_rr_ring = NULL;
2371 sc->alc_cdata.alc_rr_ring_map = NULL;
2372 bus_dma_tag_destroy(sc->alc_cdata.alc_rr_ring_tag);
2373 sc->alc_cdata.alc_rr_ring_tag = NULL;
2376 if (sc->alc_cdata.alc_cmb_tag != NULL) {
2377 if (sc->alc_cdata.alc_cmb_map != NULL)
2378 bus_dmamap_unload(sc->alc_cdata.alc_cmb_tag,
2379 sc->alc_cdata.alc_cmb_map);
2380 if (sc->alc_cdata.alc_cmb_map != NULL &&
2381 sc->alc_rdata.alc_cmb != NULL)
2382 bus_dmamem_free(sc->alc_cdata.alc_cmb_tag,
2383 sc->alc_rdata.alc_cmb,
2384 sc->alc_cdata.alc_cmb_map);
2385 sc->alc_rdata.alc_cmb = NULL;
2386 sc->alc_cdata.alc_cmb_map = NULL;
2387 bus_dma_tag_destroy(sc->alc_cdata.alc_cmb_tag);
2388 sc->alc_cdata.alc_cmb_tag = NULL;
2391 if (sc->alc_cdata.alc_smb_tag != NULL) {
2392 if (sc->alc_cdata.alc_smb_map != NULL)
2393 bus_dmamap_unload(sc->alc_cdata.alc_smb_tag,
2394 sc->alc_cdata.alc_smb_map);
2395 if (sc->alc_cdata.alc_smb_map != NULL &&
2396 sc->alc_rdata.alc_smb != NULL)
2397 bus_dmamem_free(sc->alc_cdata.alc_smb_tag,
2398 sc->alc_rdata.alc_smb,
2399 sc->alc_cdata.alc_smb_map);
2400 sc->alc_rdata.alc_smb = NULL;
2401 sc->alc_cdata.alc_smb_map = NULL;
2402 bus_dma_tag_destroy(sc->alc_cdata.alc_smb_tag);
2403 sc->alc_cdata.alc_smb_tag = NULL;
2405 if (sc->alc_cdata.alc_buffer_tag != NULL) {
2406 bus_dma_tag_destroy(sc->alc_cdata.alc_buffer_tag);
2407 sc->alc_cdata.alc_buffer_tag = NULL;
2409 if (sc->alc_cdata.alc_parent_tag != NULL) {
2410 bus_dma_tag_destroy(sc->alc_cdata.alc_parent_tag);
2411 sc->alc_cdata.alc_parent_tag = NULL;
2416 alc_shutdown(device_t dev)
2419 return (alc_suspend(dev));
2423 * Note, this driver resets the link speed to 10/100Mbps by
2424 * restarting auto-negotiation in suspend/shutdown phase but we
2425 * don't know whether that auto-negotiation would succeed or not
2426 * as driver has no control after powering off/suspend operation.
2427 * If the renegotiation fail WOL may not work. Running at 1Gbps
2428 * will draw more power than 375mA at 3.3V which is specified in
2429 * PCI specification and that would result in complete
2430 * shutdowning power to ethernet controller.
2433 * Save current negotiated media speed/duplex/flow-control to
2434 * softc and restore the same link again after resuming. PHY
2435 * handling such as power down/resetting to 100Mbps may be better
2436 * handled in suspend method in phy driver.
2439 alc_setlinkspeed(struct alc_softc *sc)
2441 struct mii_data *mii;
2444 mii = device_get_softc(sc->alc_miibus);
2447 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) ==
2448 (IFM_ACTIVE | IFM_AVALID)) {
2449 switch IFM_SUBTYPE(mii->mii_media_active) {
2460 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, MII_100T2CR, 0);
2461 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
2462 MII_ANAR, ANAR_TX_FD | ANAR_TX | ANAR_10_FD | ANAR_10 | ANAR_CSMA);
2463 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
2464 MII_BMCR, BMCR_RESET | BMCR_AUTOEN | BMCR_STARTNEG);
2468 * Poll link state until alc(4) get a 10/100Mbps link.
2470 for (i = 0; i < MII_ANEGTICKS_GIGE; i++) {
2472 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID))
2473 == (IFM_ACTIVE | IFM_AVALID)) {
2474 switch (IFM_SUBTYPE(
2475 mii->mii_media_active)) {
2485 pause("alclnk", hz);
2488 if (i == MII_ANEGTICKS_GIGE)
2489 device_printf(sc->alc_dev,
2490 "establishing a link failed, WOL may not work!");
2493 * No link, force MAC to have 100Mbps, full-duplex link.
2494 * This is the last resort and may/may not work.
2496 mii->mii_media_status = IFM_AVALID | IFM_ACTIVE;
2497 mii->mii_media_active = IFM_ETHER | IFM_100_TX | IFM_FDX;
2502 alc_setwol(struct alc_softc *sc)
2505 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
2506 alc_setwol_816x(sc);
2508 alc_setwol_813x(sc);
2512 alc_setwol_813x(struct alc_softc *sc)
2518 ALC_LOCK_ASSERT(sc);
2520 alc_disable_l0s_l1(sc);
2522 if ((sc->alc_flags & ALC_FLAG_PM) == 0) {
2524 CSR_WRITE_4(sc, ALC_WOL_CFG, 0);
2525 reg = CSR_READ_4(sc, ALC_PCIE_PHYMISC);
2526 reg |= PCIE_PHYMISC_FORCE_RCV_DET;
2527 CSR_WRITE_4(sc, ALC_PCIE_PHYMISC, reg);
2528 /* Force PHY power down. */
2530 CSR_WRITE_4(sc, ALC_MASTER_CFG,
2531 CSR_READ_4(sc, ALC_MASTER_CFG) | MASTER_CLK_SEL_DIS);
2535 if ((ifp->if_capenable & IFCAP_WOL) != 0) {
2536 if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0)
2537 alc_setlinkspeed(sc);
2538 CSR_WRITE_4(sc, ALC_MASTER_CFG,
2539 CSR_READ_4(sc, ALC_MASTER_CFG) & ~MASTER_CLK_SEL_DIS);
2543 if ((ifp->if_capenable & IFCAP_WOL_MAGIC) != 0)
2544 pmcs |= WOL_CFG_MAGIC | WOL_CFG_MAGIC_ENB;
2545 CSR_WRITE_4(sc, ALC_WOL_CFG, pmcs);
2546 reg = CSR_READ_4(sc, ALC_MAC_CFG);
2547 reg &= ~(MAC_CFG_DBG | MAC_CFG_PROMISC | MAC_CFG_ALLMULTI |
2549 if ((ifp->if_capenable & IFCAP_WOL_MCAST) != 0)
2550 reg |= MAC_CFG_ALLMULTI | MAC_CFG_BCAST;
2551 if ((ifp->if_capenable & IFCAP_WOL) != 0)
2552 reg |= MAC_CFG_RX_ENB;
2553 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
2555 reg = CSR_READ_4(sc, ALC_PCIE_PHYMISC);
2556 reg |= PCIE_PHYMISC_FORCE_RCV_DET;
2557 CSR_WRITE_4(sc, ALC_PCIE_PHYMISC, reg);
2558 if ((ifp->if_capenable & IFCAP_WOL) == 0) {
2559 /* WOL disabled, PHY power down. */
2561 CSR_WRITE_4(sc, ALC_MASTER_CFG,
2562 CSR_READ_4(sc, ALC_MASTER_CFG) | MASTER_CLK_SEL_DIS);
2565 pmstat = pci_read_config(sc->alc_dev,
2566 sc->alc_pmcap + PCIR_POWER_STATUS, 2);
2567 pmstat &= ~(PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE);
2568 if ((ifp->if_capenable & IFCAP_WOL) != 0)
2569 pmstat |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE;
2570 pci_write_config(sc->alc_dev,
2571 sc->alc_pmcap + PCIR_POWER_STATUS, pmstat, 2);
2575 alc_setwol_816x(struct alc_softc *sc)
2578 uint32_t gphy, mac, master, pmcs, reg;
2581 ALC_LOCK_ASSERT(sc);
2584 master = CSR_READ_4(sc, ALC_MASTER_CFG);
2585 master &= ~MASTER_CLK_SEL_DIS;
2586 gphy = CSR_READ_4(sc, ALC_GPHY_CFG);
2587 gphy &= ~(GPHY_CFG_EXT_RESET | GPHY_CFG_LED_MODE | GPHY_CFG_100AB_ENB |
2588 GPHY_CFG_PHY_PLL_ON);
2589 gphy |= GPHY_CFG_HIB_EN | GPHY_CFG_HIB_PULSE | GPHY_CFG_SEL_ANA_RESET;
2590 if ((sc->alc_flags & ALC_FLAG_PM) == 0) {
2591 CSR_WRITE_4(sc, ALC_WOL_CFG, 0);
2592 gphy |= GPHY_CFG_PHY_IDDQ | GPHY_CFG_PWDOWN_HW;
2593 mac = CSR_READ_4(sc, ALC_MAC_CFG);
2595 if ((ifp->if_capenable & IFCAP_WOL) != 0) {
2596 gphy |= GPHY_CFG_EXT_RESET;
2597 if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0)
2598 alc_setlinkspeed(sc);
2601 if ((ifp->if_capenable & IFCAP_WOL_MAGIC) != 0)
2602 pmcs |= WOL_CFG_MAGIC | WOL_CFG_MAGIC_ENB;
2603 CSR_WRITE_4(sc, ALC_WOL_CFG, pmcs);
2604 mac = CSR_READ_4(sc, ALC_MAC_CFG);
2605 mac &= ~(MAC_CFG_DBG | MAC_CFG_PROMISC | MAC_CFG_ALLMULTI |
2607 if ((ifp->if_capenable & IFCAP_WOL_MCAST) != 0)
2608 mac |= MAC_CFG_ALLMULTI | MAC_CFG_BCAST;
2609 if ((ifp->if_capenable & IFCAP_WOL) != 0)
2610 mac |= MAC_CFG_RX_ENB;
2611 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_S3DIG10,
2616 reg = CSR_READ_4(sc, ALC_MISC);
2617 reg &= ~MISC_INTNLOSC_OPEN;
2618 CSR_WRITE_4(sc, ALC_MISC, reg);
2619 reg |= MISC_INTNLOSC_OPEN;
2620 CSR_WRITE_4(sc, ALC_MISC, reg);
2621 CSR_WRITE_4(sc, ALC_MASTER_CFG, master);
2622 CSR_WRITE_4(sc, ALC_MAC_CFG, mac);
2623 CSR_WRITE_4(sc, ALC_GPHY_CFG, gphy);
2624 reg = CSR_READ_4(sc, ALC_PDLL_TRNS1);
2625 reg |= PDLL_TRNS1_D3PLLOFF_ENB;
2626 CSR_WRITE_4(sc, ALC_PDLL_TRNS1, reg);
2628 if ((sc->alc_flags & ALC_FLAG_PM) != 0) {
2630 pmstat = pci_read_config(sc->alc_dev,
2631 sc->alc_pmcap + PCIR_POWER_STATUS, 2);
2632 pmstat &= ~(PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE);
2633 if ((ifp->if_capenable & IFCAP_WOL) != 0)
2634 pmstat |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE;
2635 pci_write_config(sc->alc_dev,
2636 sc->alc_pmcap + PCIR_POWER_STATUS, pmstat, 2);
2641 alc_suspend(device_t dev)
2643 struct alc_softc *sc;
2645 sc = device_get_softc(dev);
2656 alc_resume(device_t dev)
2658 struct alc_softc *sc;
2662 sc = device_get_softc(dev);
2665 if ((sc->alc_flags & ALC_FLAG_PM) != 0) {
2666 /* Disable PME and clear PME status. */
2667 pmstat = pci_read_config(sc->alc_dev,
2668 sc->alc_pmcap + PCIR_POWER_STATUS, 2);
2669 if ((pmstat & PCIM_PSTAT_PMEENABLE) != 0) {
2670 pmstat &= ~PCIM_PSTAT_PMEENABLE;
2671 pci_write_config(sc->alc_dev,
2672 sc->alc_pmcap + PCIR_POWER_STATUS, pmstat, 2);
2678 if ((ifp->if_flags & IFF_UP) != 0) {
2679 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
2680 alc_init_locked(sc);
2688 alc_encap(struct alc_softc *sc, struct mbuf **m_head)
2690 struct alc_txdesc *txd, *txd_last;
2691 struct tx_desc *desc;
2695 bus_dma_segment_t txsegs[ALC_MAXTXSEGS];
2697 uint32_t cflags, hdrlen, ip_off, poff, vtag;
2698 int error, idx, nsegs, prod;
2700 ALC_LOCK_ASSERT(sc);
2702 M_ASSERTPKTHDR((*m_head));
2708 if ((m->m_pkthdr.csum_flags & (ALC_CSUM_FEATURES | CSUM_TSO)) != 0) {
2710 * AR81[3567]x requires offset of TCP/UDP header in its
2711 * Tx descriptor to perform Tx checksum offloading. TSO
2712 * also requires TCP header offset and modification of
2713 * IP/TCP header. This kind of operation takes many CPU
2714 * cycles on FreeBSD so fast host CPU is required to get
2715 * smooth TSO performance.
2717 struct ether_header *eh;
2719 if (M_WRITABLE(m) == 0) {
2720 /* Get a writable copy. */
2721 m = m_dup(*m_head, M_NOWAIT);
2722 /* Release original mbufs. */
2731 ip_off = sizeof(struct ether_header);
2732 m = m_pullup(m, ip_off);
2737 eh = mtod(m, struct ether_header *);
2739 * Check if hardware VLAN insertion is off.
2740 * Additional check for LLC/SNAP frame?
2742 if (eh->ether_type == htons(ETHERTYPE_VLAN)) {
2743 ip_off = sizeof(struct ether_vlan_header);
2744 m = m_pullup(m, ip_off);
2750 m = m_pullup(m, ip_off + sizeof(struct ip));
2755 ip = (struct ip *)(mtod(m, char *) + ip_off);
2756 poff = ip_off + (ip->ip_hl << 2);
2757 if ((m->m_pkthdr.csum_flags & CSUM_TSO) != 0) {
2758 m = m_pullup(m, poff + sizeof(struct tcphdr));
2763 tcp = (struct tcphdr *)(mtod(m, char *) + poff);
2764 m = m_pullup(m, poff + (tcp->th_off << 2));
2770 * Due to strict adherence of Microsoft NDIS
2771 * Large Send specification, hardware expects
2772 * a pseudo TCP checksum inserted by upper
2773 * stack. Unfortunately the pseudo TCP
2774 * checksum that NDIS refers to does not include
2775 * TCP payload length so driver should recompute
2776 * the pseudo checksum here. Hopefully this
2777 * wouldn't be much burden on modern CPUs.
2779 * Reset IP checksum and recompute TCP pseudo
2780 * checksum as NDIS specification said.
2782 ip = (struct ip *)(mtod(m, char *) + ip_off);
2783 tcp = (struct tcphdr *)(mtod(m, char *) + poff);
2785 tcp->th_sum = in_pseudo(ip->ip_src.s_addr,
2786 ip->ip_dst.s_addr, htons(IPPROTO_TCP));
2791 prod = sc->alc_cdata.alc_tx_prod;
2792 txd = &sc->alc_cdata.alc_txdesc[prod];
2794 map = txd->tx_dmamap;
2796 error = bus_dmamap_load_mbuf_sg(sc->alc_cdata.alc_tx_tag, map,
2797 *m_head, txsegs, &nsegs, 0);
2798 if (error == EFBIG) {
2799 m = m_collapse(*m_head, M_NOWAIT, ALC_MAXTXSEGS);
2806 error = bus_dmamap_load_mbuf_sg(sc->alc_cdata.alc_tx_tag, map,
2807 *m_head, txsegs, &nsegs, 0);
2813 } else if (error != 0)
2821 /* Check descriptor overrun. */
2822 if (sc->alc_cdata.alc_tx_cnt + nsegs >= ALC_TX_RING_CNT - 3) {
2823 bus_dmamap_unload(sc->alc_cdata.alc_tx_tag, map);
2826 bus_dmamap_sync(sc->alc_cdata.alc_tx_tag, map, BUS_DMASYNC_PREWRITE);
2829 cflags = TD_ETHERNET;
2833 /* Configure VLAN hardware tag insertion. */
2834 if ((m->m_flags & M_VLANTAG) != 0) {
2835 vtag = htons(m->m_pkthdr.ether_vtag);
2836 vtag = (vtag << TD_VLAN_SHIFT) & TD_VLAN_MASK;
2837 cflags |= TD_INS_VLAN_TAG;
2839 if ((m->m_pkthdr.csum_flags & CSUM_TSO) != 0) {
2840 /* Request TSO and set MSS. */
2841 cflags |= TD_TSO | TD_TSO_DESCV1;
2842 cflags |= ((uint32_t)m->m_pkthdr.tso_segsz << TD_MSS_SHIFT) &
2844 /* Set TCP header offset. */
2845 cflags |= (poff << TD_TCPHDR_OFFSET_SHIFT) &
2846 TD_TCPHDR_OFFSET_MASK;
2848 * AR81[3567]x requires the first buffer should
2849 * only hold IP/TCP header data. Payload should
2850 * be handled in other descriptors.
2852 hdrlen = poff + (tcp->th_off << 2);
2853 desc = &sc->alc_rdata.alc_tx_ring[prod];
2854 desc->len = htole32(TX_BYTES(hdrlen | vtag));
2855 desc->flags = htole32(cflags);
2856 desc->addr = htole64(txsegs[0].ds_addr);
2857 sc->alc_cdata.alc_tx_cnt++;
2858 ALC_DESC_INC(prod, ALC_TX_RING_CNT);
2859 if (m->m_len - hdrlen > 0) {
2860 /* Handle remaining payload of the first fragment. */
2861 desc = &sc->alc_rdata.alc_tx_ring[prod];
2862 desc->len = htole32(TX_BYTES((m->m_len - hdrlen) |
2864 desc->flags = htole32(cflags);
2865 desc->addr = htole64(txsegs[0].ds_addr + hdrlen);
2866 sc->alc_cdata.alc_tx_cnt++;
2867 ALC_DESC_INC(prod, ALC_TX_RING_CNT);
2869 /* Handle remaining fragments. */
2871 } else if ((m->m_pkthdr.csum_flags & ALC_CSUM_FEATURES) != 0) {
2872 /* Configure Tx checksum offload. */
2873 #ifdef ALC_USE_CUSTOM_CSUM
2874 cflags |= TD_CUSTOM_CSUM;
2875 /* Set checksum start offset. */
2876 cflags |= ((poff >> 1) << TD_PLOAD_OFFSET_SHIFT) &
2877 TD_PLOAD_OFFSET_MASK;
2878 /* Set checksum insertion position of TCP/UDP. */
2879 cflags |= (((poff + m->m_pkthdr.csum_data) >> 1) <<
2880 TD_CUSTOM_CSUM_OFFSET_SHIFT) & TD_CUSTOM_CSUM_OFFSET_MASK;
2882 if ((m->m_pkthdr.csum_flags & CSUM_IP) != 0)
2883 cflags |= TD_IPCSUM;
2884 if ((m->m_pkthdr.csum_flags & CSUM_TCP) != 0)
2885 cflags |= TD_TCPCSUM;
2886 if ((m->m_pkthdr.csum_flags & CSUM_UDP) != 0)
2887 cflags |= TD_UDPCSUM;
2888 /* Set TCP/UDP header offset. */
2889 cflags |= (poff << TD_L4HDR_OFFSET_SHIFT) &
2890 TD_L4HDR_OFFSET_MASK;
2893 for (; idx < nsegs; idx++) {
2894 desc = &sc->alc_rdata.alc_tx_ring[prod];
2895 desc->len = htole32(TX_BYTES(txsegs[idx].ds_len) | vtag);
2896 desc->flags = htole32(cflags);
2897 desc->addr = htole64(txsegs[idx].ds_addr);
2898 sc->alc_cdata.alc_tx_cnt++;
2899 ALC_DESC_INC(prod, ALC_TX_RING_CNT);
2901 /* Update producer index. */
2902 sc->alc_cdata.alc_tx_prod = prod;
2904 /* Finally set EOP on the last descriptor. */
2905 prod = (prod + ALC_TX_RING_CNT - 1) % ALC_TX_RING_CNT;
2906 desc = &sc->alc_rdata.alc_tx_ring[prod];
2907 desc->flags |= htole32(TD_EOP);
2909 /* Swap dmamap of the first and the last. */
2910 txd = &sc->alc_cdata.alc_txdesc[prod];
2911 map = txd_last->tx_dmamap;
2912 txd_last->tx_dmamap = txd->tx_dmamap;
2913 txd->tx_dmamap = map;
2920 alc_start(struct ifnet *ifp)
2922 struct alc_softc *sc;
2926 alc_start_locked(ifp);
2931 alc_start_locked(struct ifnet *ifp)
2933 struct alc_softc *sc;
2934 struct mbuf *m_head;
2939 ALC_LOCK_ASSERT(sc);
2941 /* Reclaim transmitted frames. */
2942 if (sc->alc_cdata.alc_tx_cnt >= ALC_TX_DESC_HIWAT)
2945 if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) !=
2946 IFF_DRV_RUNNING || (sc->alc_flags & ALC_FLAG_LINK) == 0)
2949 for (enq = 0; !IFQ_DRV_IS_EMPTY(&ifp->if_snd); ) {
2950 IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head);
2954 * Pack the data into the transmit ring. If we
2955 * don't have room, set the OACTIVE flag and wait
2956 * for the NIC to drain the ring.
2958 if (alc_encap(sc, &m_head)) {
2961 IFQ_DRV_PREPEND(&ifp->if_snd, m_head);
2962 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2968 * If there's a BPF listener, bounce a copy of this frame
2971 ETHER_BPF_MTAP(ifp, m_head);
2975 /* Sync descriptors. */
2976 bus_dmamap_sync(sc->alc_cdata.alc_tx_ring_tag,
2977 sc->alc_cdata.alc_tx_ring_map, BUS_DMASYNC_PREWRITE);
2978 /* Kick. Assume we're using normal Tx priority queue. */
2979 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
2980 CSR_WRITE_2(sc, ALC_MBOX_TD_PRI0_PROD_IDX,
2981 (uint16_t)sc->alc_cdata.alc_tx_prod);
2983 CSR_WRITE_4(sc, ALC_MBOX_TD_PROD_IDX,
2984 (sc->alc_cdata.alc_tx_prod <<
2985 MBOX_TD_PROD_LO_IDX_SHIFT) &
2986 MBOX_TD_PROD_LO_IDX_MASK);
2987 /* Set a timeout in case the chip goes out to lunch. */
2988 sc->alc_watchdog_timer = ALC_TX_TIMEOUT;
2993 alc_watchdog(struct alc_softc *sc)
2997 ALC_LOCK_ASSERT(sc);
2999 if (sc->alc_watchdog_timer == 0 || --sc->alc_watchdog_timer)
3003 if ((sc->alc_flags & ALC_FLAG_LINK) == 0) {
3004 if_printf(sc->alc_ifp, "watchdog timeout (lost link)\n");
3006 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
3007 alc_init_locked(sc);
3010 if_printf(sc->alc_ifp, "watchdog timeout -- resetting\n");
3012 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
3013 alc_init_locked(sc);
3014 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
3015 alc_start_locked(ifp);
3019 alc_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
3021 struct alc_softc *sc;
3023 struct mii_data *mii;
3027 ifr = (struct ifreq *)data;
3031 if (ifr->ifr_mtu < ETHERMIN ||
3032 ifr->ifr_mtu > (sc->alc_ident->max_framelen -
3033 sizeof(struct ether_vlan_header) - ETHER_CRC_LEN) ||
3034 ((sc->alc_flags & ALC_FLAG_JUMBO) == 0 &&
3035 ifr->ifr_mtu > ETHERMTU))
3037 else if (ifp->if_mtu != ifr->ifr_mtu) {
3039 ifp->if_mtu = ifr->ifr_mtu;
3040 /* AR81[3567]x has 13 bits MSS field. */
3041 if (ifp->if_mtu > ALC_TSO_MTU &&
3042 (ifp->if_capenable & IFCAP_TSO4) != 0) {
3043 ifp->if_capenable &= ~IFCAP_TSO4;
3044 ifp->if_hwassist &= ~CSUM_TSO;
3045 VLAN_CAPABILITIES(ifp);
3052 if ((ifp->if_flags & IFF_UP) != 0) {
3053 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0 &&
3054 ((ifp->if_flags ^ sc->alc_if_flags) &
3055 (IFF_PROMISC | IFF_ALLMULTI)) != 0)
3058 alc_init_locked(sc);
3059 } else if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
3061 sc->alc_if_flags = ifp->if_flags;
3067 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
3073 mii = device_get_softc(sc->alc_miibus);
3074 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, cmd);
3078 mask = ifr->ifr_reqcap ^ ifp->if_capenable;
3079 if ((mask & IFCAP_TXCSUM) != 0 &&
3080 (ifp->if_capabilities & IFCAP_TXCSUM) != 0) {
3081 ifp->if_capenable ^= IFCAP_TXCSUM;
3082 if ((ifp->if_capenable & IFCAP_TXCSUM) != 0)
3083 ifp->if_hwassist |= ALC_CSUM_FEATURES;
3085 ifp->if_hwassist &= ~ALC_CSUM_FEATURES;
3087 if ((mask & IFCAP_TSO4) != 0 &&
3088 (ifp->if_capabilities & IFCAP_TSO4) != 0) {
3089 ifp->if_capenable ^= IFCAP_TSO4;
3090 if ((ifp->if_capenable & IFCAP_TSO4) != 0) {
3091 /* AR81[3567]x has 13 bits MSS field. */
3092 if (ifp->if_mtu > ALC_TSO_MTU) {
3093 ifp->if_capenable &= ~IFCAP_TSO4;
3094 ifp->if_hwassist &= ~CSUM_TSO;
3096 ifp->if_hwassist |= CSUM_TSO;
3098 ifp->if_hwassist &= ~CSUM_TSO;
3100 if ((mask & IFCAP_WOL_MCAST) != 0 &&
3101 (ifp->if_capabilities & IFCAP_WOL_MCAST) != 0)
3102 ifp->if_capenable ^= IFCAP_WOL_MCAST;
3103 if ((mask & IFCAP_WOL_MAGIC) != 0 &&
3104 (ifp->if_capabilities & IFCAP_WOL_MAGIC) != 0)
3105 ifp->if_capenable ^= IFCAP_WOL_MAGIC;
3106 if ((mask & IFCAP_VLAN_HWTAGGING) != 0 &&
3107 (ifp->if_capabilities & IFCAP_VLAN_HWTAGGING) != 0) {
3108 ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING;
3111 if ((mask & IFCAP_VLAN_HWCSUM) != 0 &&
3112 (ifp->if_capabilities & IFCAP_VLAN_HWCSUM) != 0)
3113 ifp->if_capenable ^= IFCAP_VLAN_HWCSUM;
3114 if ((mask & IFCAP_VLAN_HWTSO) != 0 &&
3115 (ifp->if_capabilities & IFCAP_VLAN_HWTSO) != 0)
3116 ifp->if_capenable ^= IFCAP_VLAN_HWTSO;
3117 if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) == 0)
3118 ifp->if_capenable &=
3119 ~(IFCAP_VLAN_HWTSO | IFCAP_VLAN_HWCSUM);
3121 VLAN_CAPABILITIES(ifp);
3124 error = ether_ioctl(ifp, cmd, data);
3132 alc_mac_config(struct alc_softc *sc)
3134 struct mii_data *mii;
3137 ALC_LOCK_ASSERT(sc);
3139 mii = device_get_softc(sc->alc_miibus);
3140 reg = CSR_READ_4(sc, ALC_MAC_CFG);
3141 reg &= ~(MAC_CFG_FULL_DUPLEX | MAC_CFG_TX_FC | MAC_CFG_RX_FC |
3142 MAC_CFG_SPEED_MASK);
3143 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0 ||
3144 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151 ||
3145 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2 ||
3146 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2)
3147 reg |= MAC_CFG_HASH_ALG_CRC32 | MAC_CFG_SPEED_MODE_SW;
3148 /* Reprogram MAC with resolved speed/duplex. */
3149 switch (IFM_SUBTYPE(mii->mii_media_active)) {
3152 reg |= MAC_CFG_SPEED_10_100;
3155 reg |= MAC_CFG_SPEED_1000;
3158 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) {
3159 reg |= MAC_CFG_FULL_DUPLEX;
3160 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_TXPAUSE) != 0)
3161 reg |= MAC_CFG_TX_FC;
3162 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_RXPAUSE) != 0)
3163 reg |= MAC_CFG_RX_FC;
3165 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
3169 alc_stats_clear(struct alc_softc *sc)
3171 struct smb sb, *smb;
3175 if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0) {
3176 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag,
3177 sc->alc_cdata.alc_smb_map,
3178 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
3179 smb = sc->alc_rdata.alc_smb;
3180 /* Update done, clear. */
3182 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag,
3183 sc->alc_cdata.alc_smb_map,
3184 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
3186 for (reg = &sb.rx_frames, i = 0; reg <= &sb.rx_pkts_filtered;
3188 CSR_READ_4(sc, ALC_RX_MIB_BASE + i);
3189 i += sizeof(uint32_t);
3191 /* Read Tx statistics. */
3192 for (reg = &sb.tx_frames, i = 0; reg <= &sb.tx_mcast_bytes;
3194 CSR_READ_4(sc, ALC_TX_MIB_BASE + i);
3195 i += sizeof(uint32_t);
3201 alc_stats_update(struct alc_softc *sc)
3203 struct alc_hw_stats *stat;
3204 struct smb sb, *smb;
3209 ALC_LOCK_ASSERT(sc);
3212 stat = &sc->alc_stats;
3213 if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0) {
3214 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag,
3215 sc->alc_cdata.alc_smb_map,
3216 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
3217 smb = sc->alc_rdata.alc_smb;
3218 if (smb->updated == 0)
3222 /* Read Rx statistics. */
3223 for (reg = &sb.rx_frames, i = 0; reg <= &sb.rx_pkts_filtered;
3225 *reg = CSR_READ_4(sc, ALC_RX_MIB_BASE + i);
3226 i += sizeof(uint32_t);
3228 /* Read Tx statistics. */
3229 for (reg = &sb.tx_frames, i = 0; reg <= &sb.tx_mcast_bytes;
3231 *reg = CSR_READ_4(sc, ALC_TX_MIB_BASE + i);
3232 i += sizeof(uint32_t);
3237 stat->rx_frames += smb->rx_frames;
3238 stat->rx_bcast_frames += smb->rx_bcast_frames;
3239 stat->rx_mcast_frames += smb->rx_mcast_frames;
3240 stat->rx_pause_frames += smb->rx_pause_frames;
3241 stat->rx_control_frames += smb->rx_control_frames;
3242 stat->rx_crcerrs += smb->rx_crcerrs;
3243 stat->rx_lenerrs += smb->rx_lenerrs;
3244 stat->rx_bytes += smb->rx_bytes;
3245 stat->rx_runts += smb->rx_runts;
3246 stat->rx_fragments += smb->rx_fragments;
3247 stat->rx_pkts_64 += smb->rx_pkts_64;
3248 stat->rx_pkts_65_127 += smb->rx_pkts_65_127;
3249 stat->rx_pkts_128_255 += smb->rx_pkts_128_255;
3250 stat->rx_pkts_256_511 += smb->rx_pkts_256_511;
3251 stat->rx_pkts_512_1023 += smb->rx_pkts_512_1023;
3252 stat->rx_pkts_1024_1518 += smb->rx_pkts_1024_1518;
3253 stat->rx_pkts_1519_max += smb->rx_pkts_1519_max;
3254 stat->rx_pkts_truncated += smb->rx_pkts_truncated;
3255 stat->rx_fifo_oflows += smb->rx_fifo_oflows;
3256 stat->rx_rrs_errs += smb->rx_rrs_errs;
3257 stat->rx_alignerrs += smb->rx_alignerrs;
3258 stat->rx_bcast_bytes += smb->rx_bcast_bytes;
3259 stat->rx_mcast_bytes += smb->rx_mcast_bytes;
3260 stat->rx_pkts_filtered += smb->rx_pkts_filtered;
3263 stat->tx_frames += smb->tx_frames;
3264 stat->tx_bcast_frames += smb->tx_bcast_frames;
3265 stat->tx_mcast_frames += smb->tx_mcast_frames;
3266 stat->tx_pause_frames += smb->tx_pause_frames;
3267 stat->tx_excess_defer += smb->tx_excess_defer;
3268 stat->tx_control_frames += smb->tx_control_frames;
3269 stat->tx_deferred += smb->tx_deferred;
3270 stat->tx_bytes += smb->tx_bytes;
3271 stat->tx_pkts_64 += smb->tx_pkts_64;
3272 stat->tx_pkts_65_127 += smb->tx_pkts_65_127;
3273 stat->tx_pkts_128_255 += smb->tx_pkts_128_255;
3274 stat->tx_pkts_256_511 += smb->tx_pkts_256_511;
3275 stat->tx_pkts_512_1023 += smb->tx_pkts_512_1023;
3276 stat->tx_pkts_1024_1518 += smb->tx_pkts_1024_1518;
3277 stat->tx_pkts_1519_max += smb->tx_pkts_1519_max;
3278 stat->tx_single_colls += smb->tx_single_colls;
3279 stat->tx_multi_colls += smb->tx_multi_colls;
3280 stat->tx_late_colls += smb->tx_late_colls;
3281 stat->tx_excess_colls += smb->tx_excess_colls;
3282 stat->tx_underrun += smb->tx_underrun;
3283 stat->tx_desc_underrun += smb->tx_desc_underrun;
3284 stat->tx_lenerrs += smb->tx_lenerrs;
3285 stat->tx_pkts_truncated += smb->tx_pkts_truncated;
3286 stat->tx_bcast_bytes += smb->tx_bcast_bytes;
3287 stat->tx_mcast_bytes += smb->tx_mcast_bytes;
3289 /* Update counters in ifnet. */
3290 ifp->if_opackets += smb->tx_frames;
3292 ifp->if_collisions += smb->tx_single_colls +
3293 smb->tx_multi_colls * 2 + smb->tx_late_colls +
3294 smb->tx_excess_colls * HDPX_CFG_RETRY_DEFAULT;
3298 * tx_pkts_truncated counter looks suspicious. It constantly
3299 * increments with no sign of Tx errors. This may indicate
3300 * the counter name is not correct one so I've removed the
3301 * counter in output errors.
3303 ifp->if_oerrors += smb->tx_late_colls + smb->tx_excess_colls +
3304 smb->tx_underrun + smb->tx_pkts_truncated;
3306 ifp->if_ipackets += smb->rx_frames;
3308 ifp->if_ierrors += smb->rx_crcerrs + smb->rx_lenerrs +
3309 smb->rx_runts + smb->rx_pkts_truncated +
3310 smb->rx_fifo_oflows + smb->rx_rrs_errs +
3313 if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0) {
3314 /* Update done, clear. */
3316 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag,
3317 sc->alc_cdata.alc_smb_map,
3318 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
3325 struct alc_softc *sc;
3328 sc = (struct alc_softc *)arg;
3330 status = CSR_READ_4(sc, ALC_INTR_STATUS);
3331 if ((status & ALC_INTRS) == 0)
3332 return (FILTER_STRAY);
3333 /* Disable interrupts. */
3334 CSR_WRITE_4(sc, ALC_INTR_STATUS, INTR_DIS_INT);
3335 taskqueue_enqueue(sc->alc_tq, &sc->alc_int_task);
3337 return (FILTER_HANDLED);
3341 alc_int_task(void *arg, int pending)
3343 struct alc_softc *sc;
3348 sc = (struct alc_softc *)arg;
3351 status = CSR_READ_4(sc, ALC_INTR_STATUS);
3353 if (sc->alc_morework != 0) {
3354 sc->alc_morework = 0;
3355 status |= INTR_RX_PKT;
3357 if ((status & ALC_INTRS) == 0)
3360 /* Acknowledge interrupts but still disable interrupts. */
3361 CSR_WRITE_4(sc, ALC_INTR_STATUS, status | INTR_DIS_INT);
3364 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) {
3365 if ((status & INTR_RX_PKT) != 0) {
3366 more = alc_rxintr(sc, sc->alc_process_limit);
3368 sc->alc_morework = 1;
3369 else if (more == EIO) {
3370 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
3371 alc_init_locked(sc);
3376 if ((status & (INTR_DMA_RD_TO_RST | INTR_DMA_WR_TO_RST |
3377 INTR_TXQ_TO_RST)) != 0) {
3378 if ((status & INTR_DMA_RD_TO_RST) != 0)
3379 device_printf(sc->alc_dev,
3380 "DMA read error! -- resetting\n");
3381 if ((status & INTR_DMA_WR_TO_RST) != 0)
3382 device_printf(sc->alc_dev,
3383 "DMA write error! -- resetting\n");
3384 if ((status & INTR_TXQ_TO_RST) != 0)
3385 device_printf(sc->alc_dev,
3386 "TxQ reset! -- resetting\n");
3387 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
3388 alc_init_locked(sc);
3392 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0 &&
3393 !IFQ_DRV_IS_EMPTY(&ifp->if_snd))
3394 alc_start_locked(ifp);
3397 if (more == EAGAIN ||
3398 (CSR_READ_4(sc, ALC_INTR_STATUS) & ALC_INTRS) != 0) {
3400 taskqueue_enqueue(sc->alc_tq, &sc->alc_int_task);
3405 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) {
3406 /* Re-enable interrupts if we're running. */
3407 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0x7FFFFFFF);
3413 alc_txeof(struct alc_softc *sc)
3416 struct alc_txdesc *txd;
3417 uint32_t cons, prod;
3420 ALC_LOCK_ASSERT(sc);
3424 if (sc->alc_cdata.alc_tx_cnt == 0)
3426 bus_dmamap_sync(sc->alc_cdata.alc_tx_ring_tag,
3427 sc->alc_cdata.alc_tx_ring_map, BUS_DMASYNC_POSTWRITE);
3428 if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0) {
3429 bus_dmamap_sync(sc->alc_cdata.alc_cmb_tag,
3430 sc->alc_cdata.alc_cmb_map, BUS_DMASYNC_POSTREAD);
3431 prod = sc->alc_rdata.alc_cmb->cons;
3433 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
3434 prod = CSR_READ_2(sc, ALC_MBOX_TD_PRI0_CONS_IDX);
3436 prod = CSR_READ_4(sc, ALC_MBOX_TD_CONS_IDX);
3437 /* Assume we're using normal Tx priority queue. */
3438 prod = (prod & MBOX_TD_CONS_LO_IDX_MASK) >>
3439 MBOX_TD_CONS_LO_IDX_SHIFT;
3442 cons = sc->alc_cdata.alc_tx_cons;
3444 * Go through our Tx list and free mbufs for those
3445 * frames which have been transmitted.
3447 for (prog = 0; cons != prod; prog++,
3448 ALC_DESC_INC(cons, ALC_TX_RING_CNT)) {
3449 if (sc->alc_cdata.alc_tx_cnt <= 0)
3452 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
3453 sc->alc_cdata.alc_tx_cnt--;
3454 txd = &sc->alc_cdata.alc_txdesc[cons];
3455 if (txd->tx_m != NULL) {
3456 /* Reclaim transmitted mbufs. */
3457 bus_dmamap_sync(sc->alc_cdata.alc_tx_tag,
3458 txd->tx_dmamap, BUS_DMASYNC_POSTWRITE);
3459 bus_dmamap_unload(sc->alc_cdata.alc_tx_tag,
3466 if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0)
3467 bus_dmamap_sync(sc->alc_cdata.alc_cmb_tag,
3468 sc->alc_cdata.alc_cmb_map, BUS_DMASYNC_PREREAD);
3469 sc->alc_cdata.alc_tx_cons = cons;
3471 * Unarm watchdog timer only when there is no pending
3472 * frames in Tx queue.
3474 if (sc->alc_cdata.alc_tx_cnt == 0)
3475 sc->alc_watchdog_timer = 0;
3479 alc_newbuf(struct alc_softc *sc, struct alc_rxdesc *rxd)
3482 bus_dma_segment_t segs[1];
3486 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
3489 m->m_len = m->m_pkthdr.len = RX_BUF_SIZE_MAX;
3490 #ifndef __NO_STRICT_ALIGNMENT
3491 m_adj(m, sizeof(uint64_t));
3494 if (bus_dmamap_load_mbuf_sg(sc->alc_cdata.alc_rx_tag,
3495 sc->alc_cdata.alc_rx_sparemap, m, segs, &nsegs, 0) != 0) {
3499 KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs));
3501 if (rxd->rx_m != NULL) {
3502 bus_dmamap_sync(sc->alc_cdata.alc_rx_tag, rxd->rx_dmamap,
3503 BUS_DMASYNC_POSTREAD);
3504 bus_dmamap_unload(sc->alc_cdata.alc_rx_tag, rxd->rx_dmamap);
3506 map = rxd->rx_dmamap;
3507 rxd->rx_dmamap = sc->alc_cdata.alc_rx_sparemap;
3508 sc->alc_cdata.alc_rx_sparemap = map;
3509 bus_dmamap_sync(sc->alc_cdata.alc_rx_tag, rxd->rx_dmamap,
3510 BUS_DMASYNC_PREREAD);
3512 rxd->rx_desc->addr = htole64(segs[0].ds_addr);
3517 alc_rxintr(struct alc_softc *sc, int count)
3520 struct rx_rdesc *rrd;
3521 uint32_t nsegs, status;
3524 bus_dmamap_sync(sc->alc_cdata.alc_rr_ring_tag,
3525 sc->alc_cdata.alc_rr_ring_map,
3526 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
3527 bus_dmamap_sync(sc->alc_cdata.alc_rx_ring_tag,
3528 sc->alc_cdata.alc_rx_ring_map, BUS_DMASYNC_POSTWRITE);
3529 rr_cons = sc->alc_cdata.alc_rr_cons;
3531 for (prog = 0; (ifp->if_drv_flags & IFF_DRV_RUNNING) != 0;) {
3534 rrd = &sc->alc_rdata.alc_rr_ring[rr_cons];
3535 status = le32toh(rrd->status);
3536 if ((status & RRD_VALID) == 0)
3538 nsegs = RRD_RD_CNT(le32toh(rrd->rdinfo));
3540 /* This should not happen! */
3541 device_printf(sc->alc_dev,
3542 "unexpected segment count -- resetting\n");
3546 /* Clear Rx return status. */
3548 ALC_DESC_INC(rr_cons, ALC_RR_RING_CNT);
3549 sc->alc_cdata.alc_rx_cons += nsegs;
3550 sc->alc_cdata.alc_rx_cons %= ALC_RR_RING_CNT;
3555 /* Update the consumer index. */
3556 sc->alc_cdata.alc_rr_cons = rr_cons;
3557 /* Sync Rx return descriptors. */
3558 bus_dmamap_sync(sc->alc_cdata.alc_rr_ring_tag,
3559 sc->alc_cdata.alc_rr_ring_map,
3560 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
3562 * Sync updated Rx descriptors such that controller see
3563 * modified buffer addresses.
3565 bus_dmamap_sync(sc->alc_cdata.alc_rx_ring_tag,
3566 sc->alc_cdata.alc_rx_ring_map, BUS_DMASYNC_PREWRITE);
3568 * Let controller know availability of new Rx buffers.
3569 * Since alc(4) use RXQ_CFG_RD_BURST_DEFAULT descriptors
3570 * it may be possible to update ALC_MBOX_RD0_PROD_IDX
3571 * only when Rx buffer pre-fetching is required. In
3572 * addition we already set ALC_RX_RD_FREE_THRESH to
3573 * RX_RD_FREE_THRESH_LO_DEFAULT descriptors. However
3574 * it still seems that pre-fetching needs more
3577 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
3578 CSR_WRITE_2(sc, ALC_MBOX_RD0_PROD_IDX,
3579 (uint16_t)sc->alc_cdata.alc_rx_cons);
3581 CSR_WRITE_4(sc, ALC_MBOX_RD0_PROD_IDX,
3582 sc->alc_cdata.alc_rx_cons);
3585 return (count > 0 ? 0 : EAGAIN);
3588 #ifndef __NO_STRICT_ALIGNMENT
3589 static struct mbuf *
3590 alc_fixup_rx(struct ifnet *ifp, struct mbuf *m)
3594 uint16_t *src, *dst;
3596 src = mtod(m, uint16_t *);
3599 if (m->m_next == NULL) {
3600 for (i = 0; i < (m->m_len / sizeof(uint16_t) + 1); i++)
3606 * Append a new mbuf to received mbuf chain and copy ethernet
3607 * header from the mbuf chain. This can save lots of CPU
3608 * cycles for jumbo frame.
3610 MGETHDR(n, M_NOWAIT, MT_DATA);
3616 bcopy(m->m_data, n->m_data, ETHER_HDR_LEN);
3617 m->m_data += ETHER_HDR_LEN;
3618 m->m_len -= ETHER_HDR_LEN;
3619 n->m_len = ETHER_HDR_LEN;
3620 M_MOVE_PKTHDR(n, m);
3626 /* Receive a frame. */
3628 alc_rxeof(struct alc_softc *sc, struct rx_rdesc *rrd)
3630 struct alc_rxdesc *rxd;
3632 struct mbuf *mp, *m;
3633 uint32_t rdinfo, status, vtag;
3634 int count, nsegs, rx_cons;
3637 status = le32toh(rrd->status);
3638 rdinfo = le32toh(rrd->rdinfo);
3639 rx_cons = RRD_RD_IDX(rdinfo);
3640 nsegs = RRD_RD_CNT(rdinfo);
3642 sc->alc_cdata.alc_rxlen = RRD_BYTES(status);
3643 if ((status & (RRD_ERR_SUM | RRD_ERR_LENGTH)) != 0) {
3645 * We want to pass the following frames to upper
3646 * layer regardless of error status of Rx return
3649 * o IP/TCP/UDP checksum is bad.
3650 * o frame length and protocol specific length
3653 * Force network stack compute checksum for
3656 status |= RRD_TCP_UDPCSUM_NOK | RRD_IPCSUM_NOK;
3657 if ((status & (RRD_ERR_CRC | RRD_ERR_ALIGN |
3658 RRD_ERR_TRUNC | RRD_ERR_RUNT)) != 0)
3662 for (count = 0; count < nsegs; count++,
3663 ALC_DESC_INC(rx_cons, ALC_RX_RING_CNT)) {
3664 rxd = &sc->alc_cdata.alc_rxdesc[rx_cons];
3666 /* Add a new receive buffer to the ring. */
3667 if (alc_newbuf(sc, rxd) != 0) {
3669 /* Reuse Rx buffers. */
3670 if (sc->alc_cdata.alc_rxhead != NULL)
3671 m_freem(sc->alc_cdata.alc_rxhead);
3676 * Assume we've received a full sized frame.
3677 * Actual size is fixed when we encounter the end of
3678 * multi-segmented frame.
3680 mp->m_len = sc->alc_buf_size;
3682 /* Chain received mbufs. */
3683 if (sc->alc_cdata.alc_rxhead == NULL) {
3684 sc->alc_cdata.alc_rxhead = mp;
3685 sc->alc_cdata.alc_rxtail = mp;
3687 mp->m_flags &= ~M_PKTHDR;
3688 sc->alc_cdata.alc_rxprev_tail =
3689 sc->alc_cdata.alc_rxtail;
3690 sc->alc_cdata.alc_rxtail->m_next = mp;
3691 sc->alc_cdata.alc_rxtail = mp;
3694 if (count == nsegs - 1) {
3695 /* Last desc. for this frame. */
3696 m = sc->alc_cdata.alc_rxhead;
3697 m->m_flags |= M_PKTHDR;
3699 * It seems that L1C/L2C controller has no way
3700 * to tell hardware to strip CRC bytes.
3703 sc->alc_cdata.alc_rxlen - ETHER_CRC_LEN;
3705 /* Set last mbuf size. */
3706 mp->m_len = sc->alc_cdata.alc_rxlen -
3707 (nsegs - 1) * sc->alc_buf_size;
3708 /* Remove the CRC bytes in chained mbufs. */
3709 if (mp->m_len <= ETHER_CRC_LEN) {
3710 sc->alc_cdata.alc_rxtail =
3711 sc->alc_cdata.alc_rxprev_tail;
3712 sc->alc_cdata.alc_rxtail->m_len -=
3713 (ETHER_CRC_LEN - mp->m_len);
3714 sc->alc_cdata.alc_rxtail->m_next = NULL;
3717 mp->m_len -= ETHER_CRC_LEN;
3720 m->m_len = m->m_pkthdr.len;
3721 m->m_pkthdr.rcvif = ifp;
3723 * Due to hardware bugs, Rx checksum offloading
3724 * was intentionally disabled.
3726 if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) != 0 &&
3727 (status & RRD_VLAN_TAG) != 0) {
3728 vtag = RRD_VLAN(le32toh(rrd->vtag));
3729 m->m_pkthdr.ether_vtag = ntohs(vtag);
3730 m->m_flags |= M_VLANTAG;
3732 #ifndef __NO_STRICT_ALIGNMENT
3733 m = alc_fixup_rx(ifp, m);
3739 (*ifp->if_input)(ifp, m);
3744 /* Reset mbuf chains. */
3745 ALC_RXCHAIN_RESET(sc);
3751 struct alc_softc *sc;
3752 struct mii_data *mii;
3754 sc = (struct alc_softc *)arg;
3756 ALC_LOCK_ASSERT(sc);
3758 mii = device_get_softc(sc->alc_miibus);
3760 alc_stats_update(sc);
3762 * alc(4) does not rely on Tx completion interrupts to reclaim
3763 * transferred buffers. Instead Tx completion interrupts are
3764 * used to hint for scheduling Tx task. So it's necessary to
3765 * release transmitted buffers by kicking Tx completion
3766 * handler. This limits the maximum reclamation delay to a hz.
3770 callout_reset(&sc->alc_tick_ch, hz, alc_tick, sc);
3774 alc_osc_reset(struct alc_softc *sc)
3778 reg = CSR_READ_4(sc, ALC_MISC3);
3779 reg &= ~MISC3_25M_BY_SW;
3780 reg |= MISC3_25M_NOTO_INTNL;
3781 CSR_WRITE_4(sc, ALC_MISC3, reg);
3783 reg = CSR_READ_4(sc, ALC_MISC);
3784 if (AR816X_REV(sc->alc_rev) >= AR816X_REV_B0) {
3786 * Restore over-current protection default value.
3787 * This value could be reset by MAC reset.
3789 reg &= ~MISC_PSW_OCP_MASK;
3790 reg |= (MISC_PSW_OCP_DEFAULT << MISC_PSW_OCP_SHIFT);
3791 reg &= ~MISC_INTNLOSC_OPEN;
3792 CSR_WRITE_4(sc, ALC_MISC, reg);
3793 CSR_WRITE_4(sc, ALC_MISC, reg | MISC_INTNLOSC_OPEN);
3794 reg = CSR_READ_4(sc, ALC_MISC2);
3795 reg &= ~MISC2_CALB_START;
3796 CSR_WRITE_4(sc, ALC_MISC2, reg);
3797 CSR_WRITE_4(sc, ALC_MISC2, reg | MISC2_CALB_START);
3800 reg &= ~MISC_INTNLOSC_OPEN;
3801 /* Disable isolate for revision A devices. */
3802 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1)
3803 reg &= ~MISC_ISO_ENB;
3804 CSR_WRITE_4(sc, ALC_MISC, reg | MISC_INTNLOSC_OPEN);
3805 CSR_WRITE_4(sc, ALC_MISC, reg);
3812 alc_reset(struct alc_softc *sc)
3814 uint32_t pmcfg, reg;
3818 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
3819 /* Reset workaround. */
3820 CSR_WRITE_4(sc, ALC_MBOX_RD0_PROD_IDX, 1);
3821 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1 &&
3822 (sc->alc_rev & 0x01) != 0) {
3823 /* Disable L0s/L1s before reset. */
3824 pmcfg = CSR_READ_4(sc, ALC_PM_CFG);
3825 if ((pmcfg & (PM_CFG_ASPM_L0S_ENB | PM_CFG_ASPM_L1_ENB))
3827 pmcfg &= ~(PM_CFG_ASPM_L0S_ENB |
3828 PM_CFG_ASPM_L1_ENB);
3829 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg);
3833 reg = CSR_READ_4(sc, ALC_MASTER_CFG);
3834 reg |= MASTER_OOB_DIS_OFF | MASTER_RESET;
3835 CSR_WRITE_4(sc, ALC_MASTER_CFG, reg);
3837 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
3838 for (i = ALC_RESET_TIMEOUT; i > 0; i--) {
3840 if (CSR_READ_4(sc, ALC_MBOX_RD0_PROD_IDX) == 0)
3844 device_printf(sc->alc_dev, "MAC reset timeout!\n");
3846 for (i = ALC_RESET_TIMEOUT; i > 0; i--) {
3848 if ((CSR_READ_4(sc, ALC_MASTER_CFG) & MASTER_RESET) == 0)
3852 device_printf(sc->alc_dev, "master reset timeout!\n");
3854 for (i = ALC_RESET_TIMEOUT; i > 0; i--) {
3855 reg = CSR_READ_4(sc, ALC_IDLE_STATUS);
3856 if ((reg & (IDLE_STATUS_RXMAC | IDLE_STATUS_TXMAC |
3857 IDLE_STATUS_RXQ | IDLE_STATUS_TXQ)) == 0)
3862 device_printf(sc->alc_dev, "reset timeout(0x%08x)!\n", reg);
3864 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
3865 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1 &&
3866 (sc->alc_rev & 0x01) != 0) {
3867 reg = CSR_READ_4(sc, ALC_MASTER_CFG);
3868 reg |= MASTER_CLK_SEL_DIS;
3869 CSR_WRITE_4(sc, ALC_MASTER_CFG, reg);
3870 /* Restore L0s/L1s config. */
3871 if ((pmcfg & (PM_CFG_ASPM_L0S_ENB | PM_CFG_ASPM_L1_ENB))
3873 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg);
3877 reg = CSR_READ_4(sc, ALC_MISC3);
3878 reg &= ~MISC3_25M_BY_SW;
3879 reg |= MISC3_25M_NOTO_INTNL;
3880 CSR_WRITE_4(sc, ALC_MISC3, reg);
3881 reg = CSR_READ_4(sc, ALC_MISC);
3882 reg &= ~MISC_INTNLOSC_OPEN;
3883 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1)
3884 reg &= ~MISC_ISO_ENB;
3885 CSR_WRITE_4(sc, ALC_MISC, reg);
3888 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0 ||
3889 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B ||
3890 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2)
3891 CSR_WRITE_4(sc, ALC_SERDES_LOCK,
3892 CSR_READ_4(sc, ALC_SERDES_LOCK) | SERDES_MAC_CLK_SLOWDOWN |
3893 SERDES_PHY_CLK_SLOWDOWN);
3899 struct alc_softc *sc;
3901 sc = (struct alc_softc *)xsc;
3903 alc_init_locked(sc);
3908 alc_init_locked(struct alc_softc *sc)
3911 struct mii_data *mii;
3912 uint8_t eaddr[ETHER_ADDR_LEN];
3914 uint32_t reg, rxf_hi, rxf_lo;
3916 ALC_LOCK_ASSERT(sc);
3919 mii = device_get_softc(sc->alc_miibus);
3921 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
3924 * Cancel any pending I/O.
3928 * Reset the chip to a known state.
3932 /* Initialize Rx descriptors. */
3933 if (alc_init_rx_ring(sc) != 0) {
3934 device_printf(sc->alc_dev, "no memory for Rx buffers.\n");
3938 alc_init_rr_ring(sc);
3939 alc_init_tx_ring(sc);
3943 /* Enable all clocks. */
3944 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
3945 CSR_WRITE_4(sc, ALC_CLK_GATING_CFG, CLK_GATING_DMAW_ENB |
3946 CLK_GATING_DMAR_ENB | CLK_GATING_TXQ_ENB |
3947 CLK_GATING_RXQ_ENB | CLK_GATING_TXMAC_ENB |
3948 CLK_GATING_RXMAC_ENB);
3949 if (AR816X_REV(sc->alc_rev) >= AR816X_REV_B0)
3950 CSR_WRITE_4(sc, ALC_IDLE_DECISN_TIMER,
3951 IDLE_DECISN_TIMER_DEFAULT_1MS);
3953 CSR_WRITE_4(sc, ALC_CLK_GATING_CFG, 0);
3955 /* Reprogram the station address. */
3956 bcopy(IF_LLADDR(ifp), eaddr, ETHER_ADDR_LEN);
3957 CSR_WRITE_4(sc, ALC_PAR0,
3958 eaddr[2] << 24 | eaddr[3] << 16 | eaddr[4] << 8 | eaddr[5]);
3959 CSR_WRITE_4(sc, ALC_PAR1, eaddr[0] << 8 | eaddr[1]);
3961 * Clear WOL status and disable all WOL feature as WOL
3962 * would interfere Rx operation under normal environments.
3964 CSR_READ_4(sc, ALC_WOL_CFG);
3965 CSR_WRITE_4(sc, ALC_WOL_CFG, 0);
3966 /* Set Tx descriptor base addresses. */
3967 paddr = sc->alc_rdata.alc_tx_ring_paddr;
3968 CSR_WRITE_4(sc, ALC_TX_BASE_ADDR_HI, ALC_ADDR_HI(paddr));
3969 CSR_WRITE_4(sc, ALC_TDL_HEAD_ADDR_LO, ALC_ADDR_LO(paddr));
3970 /* We don't use high priority ring. */
3971 CSR_WRITE_4(sc, ALC_TDH_HEAD_ADDR_LO, 0);
3972 /* Set Tx descriptor counter. */
3973 CSR_WRITE_4(sc, ALC_TD_RING_CNT,
3974 (ALC_TX_RING_CNT << TD_RING_CNT_SHIFT) & TD_RING_CNT_MASK);
3975 /* Set Rx descriptor base addresses. */
3976 paddr = sc->alc_rdata.alc_rx_ring_paddr;
3977 CSR_WRITE_4(sc, ALC_RX_BASE_ADDR_HI, ALC_ADDR_HI(paddr));
3978 CSR_WRITE_4(sc, ALC_RD0_HEAD_ADDR_LO, ALC_ADDR_LO(paddr));
3979 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
3980 /* We use one Rx ring. */
3981 CSR_WRITE_4(sc, ALC_RD1_HEAD_ADDR_LO, 0);
3982 CSR_WRITE_4(sc, ALC_RD2_HEAD_ADDR_LO, 0);
3983 CSR_WRITE_4(sc, ALC_RD3_HEAD_ADDR_LO, 0);
3985 /* Set Rx descriptor counter. */
3986 CSR_WRITE_4(sc, ALC_RD_RING_CNT,
3987 (ALC_RX_RING_CNT << RD_RING_CNT_SHIFT) & RD_RING_CNT_MASK);
3990 * Let hardware split jumbo frames into alc_max_buf_sized chunks.
3991 * if it do not fit the buffer size. Rx return descriptor holds
3992 * a counter that indicates how many fragments were made by the
3993 * hardware. The buffer size should be multiple of 8 bytes.
3994 * Since hardware has limit on the size of buffer size, always
3995 * use the maximum value.
3996 * For strict-alignment architectures make sure to reduce buffer
3997 * size by 8 bytes to make room for alignment fixup.
3999 #ifndef __NO_STRICT_ALIGNMENT
4000 sc->alc_buf_size = RX_BUF_SIZE_MAX - sizeof(uint64_t);
4002 sc->alc_buf_size = RX_BUF_SIZE_MAX;
4004 CSR_WRITE_4(sc, ALC_RX_BUF_SIZE, sc->alc_buf_size);
4006 paddr = sc->alc_rdata.alc_rr_ring_paddr;
4007 /* Set Rx return descriptor base addresses. */
4008 CSR_WRITE_4(sc, ALC_RRD0_HEAD_ADDR_LO, ALC_ADDR_LO(paddr));
4009 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
4010 /* We use one Rx return ring. */
4011 CSR_WRITE_4(sc, ALC_RRD1_HEAD_ADDR_LO, 0);
4012 CSR_WRITE_4(sc, ALC_RRD2_HEAD_ADDR_LO, 0);
4013 CSR_WRITE_4(sc, ALC_RRD3_HEAD_ADDR_LO, 0);
4015 /* Set Rx return descriptor counter. */
4016 CSR_WRITE_4(sc, ALC_RRD_RING_CNT,
4017 (ALC_RR_RING_CNT << RRD_RING_CNT_SHIFT) & RRD_RING_CNT_MASK);
4018 paddr = sc->alc_rdata.alc_cmb_paddr;
4019 CSR_WRITE_4(sc, ALC_CMB_BASE_ADDR_LO, ALC_ADDR_LO(paddr));
4020 paddr = sc->alc_rdata.alc_smb_paddr;
4021 CSR_WRITE_4(sc, ALC_SMB_BASE_ADDR_HI, ALC_ADDR_HI(paddr));
4022 CSR_WRITE_4(sc, ALC_SMB_BASE_ADDR_LO, ALC_ADDR_LO(paddr));
4024 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B) {
4025 /* Reconfigure SRAM - Vendor magic. */
4026 CSR_WRITE_4(sc, ALC_SRAM_RX_FIFO_LEN, 0x000002A0);
4027 CSR_WRITE_4(sc, ALC_SRAM_TX_FIFO_LEN, 0x00000100);
4028 CSR_WRITE_4(sc, ALC_SRAM_RX_FIFO_ADDR, 0x029F0000);
4029 CSR_WRITE_4(sc, ALC_SRAM_RD0_ADDR, 0x02BF02A0);
4030 CSR_WRITE_4(sc, ALC_SRAM_TX_FIFO_ADDR, 0x03BF02C0);
4031 CSR_WRITE_4(sc, ALC_SRAM_TD_ADDR, 0x03DF03C0);
4032 CSR_WRITE_4(sc, ALC_TXF_WATER_MARK, 0x00000000);
4033 CSR_WRITE_4(sc, ALC_RD_DMA_CFG, 0x00000000);
4036 /* Tell hardware that we're ready to load DMA blocks. */
4037 CSR_WRITE_4(sc, ALC_DMA_BLOCK, DMA_BLOCK_LOAD);
4039 /* Configure interrupt moderation timer. */
4040 reg = ALC_USECS(sc->alc_int_rx_mod) << IM_TIMER_RX_SHIFT;
4041 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0)
4042 reg |= ALC_USECS(sc->alc_int_tx_mod) << IM_TIMER_TX_SHIFT;
4043 CSR_WRITE_4(sc, ALC_IM_TIMER, reg);
4045 * We don't want to automatic interrupt clear as task queue
4046 * for the interrupt should know interrupt status.
4048 reg = CSR_READ_4(sc, ALC_MASTER_CFG);
4049 reg &= ~(MASTER_IM_RX_TIMER_ENB | MASTER_IM_TX_TIMER_ENB);
4050 reg |= MASTER_SA_TIMER_ENB;
4051 if (ALC_USECS(sc->alc_int_rx_mod) != 0)
4052 reg |= MASTER_IM_RX_TIMER_ENB;
4053 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0 &&
4054 ALC_USECS(sc->alc_int_tx_mod) != 0)
4055 reg |= MASTER_IM_TX_TIMER_ENB;
4056 CSR_WRITE_4(sc, ALC_MASTER_CFG, reg);
4058 * Disable interrupt re-trigger timer. We don't want automatic
4059 * re-triggering of un-ACKed interrupts.
4061 CSR_WRITE_4(sc, ALC_INTR_RETRIG_TIMER, ALC_USECS(0));
4062 /* Configure CMB. */
4063 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
4064 CSR_WRITE_4(sc, ALC_CMB_TD_THRESH, ALC_TX_RING_CNT / 3);
4065 CSR_WRITE_4(sc, ALC_CMB_TX_TIMER,
4066 ALC_USECS(sc->alc_int_tx_mod));
4068 if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0) {
4069 CSR_WRITE_4(sc, ALC_CMB_TD_THRESH, 4);
4070 CSR_WRITE_4(sc, ALC_CMB_TX_TIMER, ALC_USECS(5000));
4072 CSR_WRITE_4(sc, ALC_CMB_TX_TIMER, ALC_USECS(0));
4075 * Hardware can be configured to issue SMB interrupt based
4076 * on programmed interval. Since there is a callout that is
4077 * invoked for every hz in driver we use that instead of
4078 * relying on periodic SMB interrupt.
4080 CSR_WRITE_4(sc, ALC_SMB_STAT_TIMER, ALC_USECS(0));
4081 /* Clear MAC statistics. */
4082 alc_stats_clear(sc);
4085 * Always use maximum frame size that controller can support.
4086 * Otherwise received frames that has larger frame length
4087 * than alc(4) MTU would be silently dropped in hardware. This
4088 * would make path-MTU discovery hard as sender wouldn't get
4089 * any responses from receiver. alc(4) supports
4090 * multi-fragmented frames on Rx path so it has no issue on
4091 * assembling fragmented frames. Using maximum frame size also
4092 * removes the need to reinitialize hardware when interface
4093 * MTU configuration was changed.
4095 * Be conservative in what you do, be liberal in what you
4096 * accept from others - RFC 793.
4098 CSR_WRITE_4(sc, ALC_FRAME_SIZE, sc->alc_ident->max_framelen);
4100 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
4101 /* Disable header split(?) */
4102 CSR_WRITE_4(sc, ALC_HDS_CFG, 0);
4104 /* Configure IPG/IFG parameters. */
4105 CSR_WRITE_4(sc, ALC_IPG_IFG_CFG,
4106 ((IPG_IFG_IPGT_DEFAULT << IPG_IFG_IPGT_SHIFT) &
4107 IPG_IFG_IPGT_MASK) |
4108 ((IPG_IFG_MIFG_DEFAULT << IPG_IFG_MIFG_SHIFT) &
4109 IPG_IFG_MIFG_MASK) |
4110 ((IPG_IFG_IPG1_DEFAULT << IPG_IFG_IPG1_SHIFT) &
4111 IPG_IFG_IPG1_MASK) |
4112 ((IPG_IFG_IPG2_DEFAULT << IPG_IFG_IPG2_SHIFT) &
4113 IPG_IFG_IPG2_MASK));
4114 /* Set parameters for half-duplex media. */
4115 CSR_WRITE_4(sc, ALC_HDPX_CFG,
4116 ((HDPX_CFG_LCOL_DEFAULT << HDPX_CFG_LCOL_SHIFT) &
4117 HDPX_CFG_LCOL_MASK) |
4118 ((HDPX_CFG_RETRY_DEFAULT << HDPX_CFG_RETRY_SHIFT) &
4119 HDPX_CFG_RETRY_MASK) | HDPX_CFG_EXC_DEF_EN |
4120 ((HDPX_CFG_ABEBT_DEFAULT << HDPX_CFG_ABEBT_SHIFT) &
4121 HDPX_CFG_ABEBT_MASK) |
4122 ((HDPX_CFG_JAMIPG_DEFAULT << HDPX_CFG_JAMIPG_SHIFT) &
4123 HDPX_CFG_JAMIPG_MASK));
4127 * Set TSO/checksum offload threshold. For frames that is
4128 * larger than this threshold, hardware wouldn't do
4129 * TSO/checksum offloading.
4131 reg = (sc->alc_ident->max_framelen >> TSO_OFFLOAD_THRESH_UNIT_SHIFT) &
4132 TSO_OFFLOAD_THRESH_MASK;
4133 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
4134 reg |= TSO_OFFLOAD_ERRLGPKT_DROP_ENB;
4135 CSR_WRITE_4(sc, ALC_TSO_OFFLOAD_THRESH, reg);
4136 /* Configure TxQ. */
4137 reg = (alc_dma_burst[sc->alc_dma_rd_burst] <<
4138 TXQ_CFG_TX_FIFO_BURST_SHIFT) & TXQ_CFG_TX_FIFO_BURST_MASK;
4139 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B ||
4140 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2)
4142 reg |= (TXQ_CFG_TD_BURST_DEFAULT << TXQ_CFG_TD_BURST_SHIFT) &
4143 TXQ_CFG_TD_BURST_MASK;
4144 reg |= TXQ_CFG_IP_OPTION_ENB | TXQ_CFG_8023_ENB;
4145 CSR_WRITE_4(sc, ALC_TXQ_CFG, reg | TXQ_CFG_ENHANCED_MODE);
4146 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
4147 reg = (TXQ_CFG_TD_BURST_DEFAULT << HQTD_CFG_Q1_BURST_SHIFT |
4148 TXQ_CFG_TD_BURST_DEFAULT << HQTD_CFG_Q2_BURST_SHIFT |
4149 TXQ_CFG_TD_BURST_DEFAULT << HQTD_CFG_Q3_BURST_SHIFT |
4150 HQTD_CFG_BURST_ENB);
4151 CSR_WRITE_4(sc, ALC_HQTD_CFG, reg);
4152 reg = WRR_PRI_RESTRICT_NONE;
4153 reg |= (WRR_PRI_DEFAULT << WRR_PRI0_SHIFT |
4154 WRR_PRI_DEFAULT << WRR_PRI1_SHIFT |
4155 WRR_PRI_DEFAULT << WRR_PRI2_SHIFT |
4156 WRR_PRI_DEFAULT << WRR_PRI3_SHIFT);
4157 CSR_WRITE_4(sc, ALC_WRR, reg);
4159 /* Configure Rx free descriptor pre-fetching. */
4160 CSR_WRITE_4(sc, ALC_RX_RD_FREE_THRESH,
4161 ((RX_RD_FREE_THRESH_HI_DEFAULT <<
4162 RX_RD_FREE_THRESH_HI_SHIFT) & RX_RD_FREE_THRESH_HI_MASK) |
4163 ((RX_RD_FREE_THRESH_LO_DEFAULT <<
4164 RX_RD_FREE_THRESH_LO_SHIFT) & RX_RD_FREE_THRESH_LO_MASK));
4168 * Configure flow control parameters.
4169 * XON : 80% of Rx FIFO
4170 * XOFF : 30% of Rx FIFO
4172 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
4173 reg = CSR_READ_4(sc, ALC_SRAM_RX_FIFO_LEN);
4174 reg &= SRAM_RX_FIFO_LEN_MASK;
4177 reg -= RX_FIFO_PAUSE_816X_RSVD;
4179 reg -= RX_BUF_SIZE_MAX;
4181 CSR_WRITE_4(sc, ALC_RX_FIFO_PAUSE_THRESH,
4182 ((reg << RX_FIFO_PAUSE_THRESH_LO_SHIFT) &
4183 RX_FIFO_PAUSE_THRESH_LO_MASK) |
4184 (((RX_FIFO_PAUSE_816X_RSVD / 8) <<
4185 RX_FIFO_PAUSE_THRESH_HI_SHIFT) &
4186 RX_FIFO_PAUSE_THRESH_HI_MASK));
4187 } else if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8131 ||
4188 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8132) {
4189 reg = CSR_READ_4(sc, ALC_SRAM_RX_FIFO_LEN);
4190 rxf_hi = (reg * 8) / 10;
4191 rxf_lo = (reg * 3) / 10;
4192 CSR_WRITE_4(sc, ALC_RX_FIFO_PAUSE_THRESH,
4193 ((rxf_lo << RX_FIFO_PAUSE_THRESH_LO_SHIFT) &
4194 RX_FIFO_PAUSE_THRESH_LO_MASK) |
4195 ((rxf_hi << RX_FIFO_PAUSE_THRESH_HI_SHIFT) &
4196 RX_FIFO_PAUSE_THRESH_HI_MASK));
4199 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
4200 /* Disable RSS until I understand L1C/L2C's RSS logic. */
4201 CSR_WRITE_4(sc, ALC_RSS_IDT_TABLE0, 0);
4202 CSR_WRITE_4(sc, ALC_RSS_CPU, 0);
4205 /* Configure RxQ. */
4206 reg = (RXQ_CFG_RD_BURST_DEFAULT << RXQ_CFG_RD_BURST_SHIFT) &
4207 RXQ_CFG_RD_BURST_MASK;
4208 reg |= RXQ_CFG_RSS_MODE_DIS;
4209 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
4210 reg |= (RXQ_CFG_816X_IDT_TBL_SIZE_DEFAULT <<
4211 RXQ_CFG_816X_IDT_TBL_SIZE_SHIFT) &
4212 RXQ_CFG_816X_IDT_TBL_SIZE_MASK;
4213 if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0)
4214 reg |= RXQ_CFG_ASPM_THROUGHPUT_LIMIT_100M;
4216 if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0 &&
4217 sc->alc_ident->deviceid != DEVICEID_ATHEROS_AR8151_V2)
4218 reg |= RXQ_CFG_ASPM_THROUGHPUT_LIMIT_100M;
4220 CSR_WRITE_4(sc, ALC_RXQ_CFG, reg);
4222 /* Configure DMA parameters. */
4223 reg = DMA_CFG_OUT_ORDER | DMA_CFG_RD_REQ_PRI;
4225 if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0)
4226 reg |= DMA_CFG_CMB_ENB;
4227 if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0)
4228 reg |= DMA_CFG_SMB_ENB;
4230 reg |= DMA_CFG_SMB_DIS;
4231 reg |= (sc->alc_dma_rd_burst & DMA_CFG_RD_BURST_MASK) <<
4232 DMA_CFG_RD_BURST_SHIFT;
4233 reg |= (sc->alc_dma_wr_burst & DMA_CFG_WR_BURST_MASK) <<
4234 DMA_CFG_WR_BURST_SHIFT;
4235 reg |= (DMA_CFG_RD_DELAY_CNT_DEFAULT << DMA_CFG_RD_DELAY_CNT_SHIFT) &
4236 DMA_CFG_RD_DELAY_CNT_MASK;
4237 reg |= (DMA_CFG_WR_DELAY_CNT_DEFAULT << DMA_CFG_WR_DELAY_CNT_SHIFT) &
4238 DMA_CFG_WR_DELAY_CNT_MASK;
4239 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
4240 switch (AR816X_REV(sc->alc_rev)) {
4243 reg |= DMA_CFG_RD_CHNL_SEL_2;
4248 reg |= DMA_CFG_RD_CHNL_SEL_4;
4252 CSR_WRITE_4(sc, ALC_DMA_CFG, reg);
4255 * Configure Tx/Rx MACs.
4256 * - Auto-padding for short frames.
4257 * - Enable CRC generation.
4258 * Actual reconfiguration of MAC for resolved speed/duplex
4259 * is followed after detection of link establishment.
4260 * AR813x/AR815x always does checksum computation regardless
4261 * of MAC_CFG_RXCSUM_ENB bit. Also the controller is known to
4262 * have bug in protocol field in Rx return structure so
4263 * these controllers can't handle fragmented frames. Disable
4264 * Rx checksum offloading until there is a newer controller
4265 * that has sane implementation.
4267 reg = MAC_CFG_TX_CRC_ENB | MAC_CFG_TX_AUTO_PAD | MAC_CFG_FULL_DUPLEX |
4268 ((MAC_CFG_PREAMBLE_DEFAULT << MAC_CFG_PREAMBLE_SHIFT) &
4269 MAC_CFG_PREAMBLE_MASK);
4270 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0 ||
4271 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151 ||
4272 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2 ||
4273 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2)
4274 reg |= MAC_CFG_HASH_ALG_CRC32 | MAC_CFG_SPEED_MODE_SW;
4275 if ((sc->alc_flags & ALC_FLAG_FASTETHER) != 0)
4276 reg |= MAC_CFG_SPEED_10_100;
4278 reg |= MAC_CFG_SPEED_1000;
4279 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
4281 /* Set up the receive filter. */
4285 /* Acknowledge all pending interrupts and clear it. */
4286 CSR_WRITE_4(sc, ALC_INTR_MASK, ALC_INTRS);
4287 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0xFFFFFFFF);
4288 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0);
4290 ifp->if_drv_flags |= IFF_DRV_RUNNING;
4291 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
4293 sc->alc_flags &= ~ALC_FLAG_LINK;
4294 /* Switch to the current media. */
4295 alc_mediachange_locked(sc);
4297 callout_reset(&sc->alc_tick_ch, hz, alc_tick, sc);
4301 alc_stop(struct alc_softc *sc)
4304 struct alc_txdesc *txd;
4305 struct alc_rxdesc *rxd;
4309 ALC_LOCK_ASSERT(sc);
4311 * Mark the interface down and cancel the watchdog timer.
4314 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
4315 sc->alc_flags &= ~ALC_FLAG_LINK;
4316 callout_stop(&sc->alc_tick_ch);
4317 sc->alc_watchdog_timer = 0;
4318 alc_stats_update(sc);
4319 /* Disable interrupts. */
4320 CSR_WRITE_4(sc, ALC_INTR_MASK, 0);
4321 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0xFFFFFFFF);
4323 reg = CSR_READ_4(sc, ALC_DMA_CFG);
4324 reg &= ~(DMA_CFG_CMB_ENB | DMA_CFG_SMB_ENB);
4325 reg |= DMA_CFG_SMB_DIS;
4326 CSR_WRITE_4(sc, ALC_DMA_CFG, reg);
4328 /* Stop Rx/Tx MACs. */
4330 /* Disable interrupts which might be touched in taskq handler. */
4331 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0xFFFFFFFF);
4332 /* Disable L0s/L1s */
4333 alc_aspm(sc, 0, IFM_UNKNOWN);
4334 /* Reclaim Rx buffers that have been processed. */
4335 if (sc->alc_cdata.alc_rxhead != NULL)
4336 m_freem(sc->alc_cdata.alc_rxhead);
4337 ALC_RXCHAIN_RESET(sc);
4339 * Free Tx/Rx mbufs still in the queues.
4341 for (i = 0; i < ALC_RX_RING_CNT; i++) {
4342 rxd = &sc->alc_cdata.alc_rxdesc[i];
4343 if (rxd->rx_m != NULL) {
4344 bus_dmamap_sync(sc->alc_cdata.alc_rx_tag,
4345 rxd->rx_dmamap, BUS_DMASYNC_POSTREAD);
4346 bus_dmamap_unload(sc->alc_cdata.alc_rx_tag,
4352 for (i = 0; i < ALC_TX_RING_CNT; i++) {
4353 txd = &sc->alc_cdata.alc_txdesc[i];
4354 if (txd->tx_m != NULL) {
4355 bus_dmamap_sync(sc->alc_cdata.alc_tx_tag,
4356 txd->tx_dmamap, BUS_DMASYNC_POSTWRITE);
4357 bus_dmamap_unload(sc->alc_cdata.alc_tx_tag,
4366 alc_stop_mac(struct alc_softc *sc)
4372 /* Disable Rx/Tx MAC. */
4373 reg = CSR_READ_4(sc, ALC_MAC_CFG);
4374 if ((reg & (MAC_CFG_TX_ENB | MAC_CFG_RX_ENB)) != 0) {
4375 reg &= ~(MAC_CFG_TX_ENB | MAC_CFG_RX_ENB);
4376 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
4378 for (i = ALC_TIMEOUT; i > 0; i--) {
4379 reg = CSR_READ_4(sc, ALC_IDLE_STATUS);
4380 if ((reg & (IDLE_STATUS_RXMAC | IDLE_STATUS_TXMAC)) == 0)
4385 device_printf(sc->alc_dev,
4386 "could not disable Rx/Tx MAC(0x%08x)!\n", reg);
4390 alc_start_queue(struct alc_softc *sc)
4395 RXQ_CFG_QUEUE0_ENB | RXQ_CFG_QUEUE1_ENB,
4396 RXQ_CFG_QUEUE0_ENB | RXQ_CFG_QUEUE1_ENB | RXQ_CFG_QUEUE2_ENB,
4401 ALC_LOCK_ASSERT(sc);
4404 cfg = CSR_READ_4(sc, ALC_RXQ_CFG);
4405 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
4406 cfg &= ~RXQ_CFG_ENB;
4409 cfg |= RXQ_CFG_QUEUE0_ENB;
4410 CSR_WRITE_4(sc, ALC_RXQ_CFG, cfg);
4412 cfg = CSR_READ_4(sc, ALC_TXQ_CFG);
4414 CSR_WRITE_4(sc, ALC_TXQ_CFG, cfg);
4418 alc_stop_queue(struct alc_softc *sc)
4424 reg = CSR_READ_4(sc, ALC_RXQ_CFG);
4425 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
4426 if ((reg & RXQ_CFG_ENB) != 0) {
4427 reg &= ~RXQ_CFG_ENB;
4428 CSR_WRITE_4(sc, ALC_RXQ_CFG, reg);
4431 if ((reg & RXQ_CFG_QUEUE0_ENB) != 0) {
4432 reg &= ~RXQ_CFG_QUEUE0_ENB;
4433 CSR_WRITE_4(sc, ALC_RXQ_CFG, reg);
4437 reg = CSR_READ_4(sc, ALC_TXQ_CFG);
4438 if ((reg & TXQ_CFG_ENB) != 0) {
4439 reg &= ~TXQ_CFG_ENB;
4440 CSR_WRITE_4(sc, ALC_TXQ_CFG, reg);
4443 for (i = ALC_TIMEOUT; i > 0; i--) {
4444 reg = CSR_READ_4(sc, ALC_IDLE_STATUS);
4445 if ((reg & (IDLE_STATUS_RXQ | IDLE_STATUS_TXQ)) == 0)
4450 device_printf(sc->alc_dev,
4451 "could not disable RxQ/TxQ (0x%08x)!\n", reg);
4455 alc_init_tx_ring(struct alc_softc *sc)
4457 struct alc_ring_data *rd;
4458 struct alc_txdesc *txd;
4461 ALC_LOCK_ASSERT(sc);
4463 sc->alc_cdata.alc_tx_prod = 0;
4464 sc->alc_cdata.alc_tx_cons = 0;
4465 sc->alc_cdata.alc_tx_cnt = 0;
4467 rd = &sc->alc_rdata;
4468 bzero(rd->alc_tx_ring, ALC_TX_RING_SZ);
4469 for (i = 0; i < ALC_TX_RING_CNT; i++) {
4470 txd = &sc->alc_cdata.alc_txdesc[i];
4474 bus_dmamap_sync(sc->alc_cdata.alc_tx_ring_tag,
4475 sc->alc_cdata.alc_tx_ring_map, BUS_DMASYNC_PREWRITE);
4479 alc_init_rx_ring(struct alc_softc *sc)
4481 struct alc_ring_data *rd;
4482 struct alc_rxdesc *rxd;
4485 ALC_LOCK_ASSERT(sc);
4487 sc->alc_cdata.alc_rx_cons = ALC_RX_RING_CNT - 1;
4488 sc->alc_morework = 0;
4489 rd = &sc->alc_rdata;
4490 bzero(rd->alc_rx_ring, ALC_RX_RING_SZ);
4491 for (i = 0; i < ALC_RX_RING_CNT; i++) {
4492 rxd = &sc->alc_cdata.alc_rxdesc[i];
4494 rxd->rx_desc = &rd->alc_rx_ring[i];
4495 if (alc_newbuf(sc, rxd) != 0)
4500 * Since controller does not update Rx descriptors, driver
4501 * does have to read Rx descriptors back so BUS_DMASYNC_PREWRITE
4502 * is enough to ensure coherence.
4504 bus_dmamap_sync(sc->alc_cdata.alc_rx_ring_tag,
4505 sc->alc_cdata.alc_rx_ring_map, BUS_DMASYNC_PREWRITE);
4506 /* Let controller know availability of new Rx buffers. */
4507 CSR_WRITE_4(sc, ALC_MBOX_RD0_PROD_IDX, sc->alc_cdata.alc_rx_cons);
4513 alc_init_rr_ring(struct alc_softc *sc)
4515 struct alc_ring_data *rd;
4517 ALC_LOCK_ASSERT(sc);
4519 sc->alc_cdata.alc_rr_cons = 0;
4520 ALC_RXCHAIN_RESET(sc);
4522 rd = &sc->alc_rdata;
4523 bzero(rd->alc_rr_ring, ALC_RR_RING_SZ);
4524 bus_dmamap_sync(sc->alc_cdata.alc_rr_ring_tag,
4525 sc->alc_cdata.alc_rr_ring_map,
4526 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
4530 alc_init_cmb(struct alc_softc *sc)
4532 struct alc_ring_data *rd;
4534 ALC_LOCK_ASSERT(sc);
4536 rd = &sc->alc_rdata;
4537 bzero(rd->alc_cmb, ALC_CMB_SZ);
4538 bus_dmamap_sync(sc->alc_cdata.alc_cmb_tag, sc->alc_cdata.alc_cmb_map,
4539 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
4543 alc_init_smb(struct alc_softc *sc)
4545 struct alc_ring_data *rd;
4547 ALC_LOCK_ASSERT(sc);
4549 rd = &sc->alc_rdata;
4550 bzero(rd->alc_smb, ALC_SMB_SZ);
4551 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag, sc->alc_cdata.alc_smb_map,
4552 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
4556 alc_rxvlan(struct alc_softc *sc)
4561 ALC_LOCK_ASSERT(sc);
4564 reg = CSR_READ_4(sc, ALC_MAC_CFG);
4565 if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) != 0)
4566 reg |= MAC_CFG_VLAN_TAG_STRIP;
4568 reg &= ~MAC_CFG_VLAN_TAG_STRIP;
4569 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
4573 alc_rxfilter(struct alc_softc *sc)
4576 struct ifmultiaddr *ifma;
4581 ALC_LOCK_ASSERT(sc);
4585 bzero(mchash, sizeof(mchash));
4586 rxcfg = CSR_READ_4(sc, ALC_MAC_CFG);
4587 rxcfg &= ~(MAC_CFG_ALLMULTI | MAC_CFG_BCAST | MAC_CFG_PROMISC);
4588 if ((ifp->if_flags & IFF_BROADCAST) != 0)
4589 rxcfg |= MAC_CFG_BCAST;
4590 if ((ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI)) != 0) {
4591 if ((ifp->if_flags & IFF_PROMISC) != 0)
4592 rxcfg |= MAC_CFG_PROMISC;
4593 if ((ifp->if_flags & IFF_ALLMULTI) != 0)
4594 rxcfg |= MAC_CFG_ALLMULTI;
4595 mchash[0] = 0xFFFFFFFF;
4596 mchash[1] = 0xFFFFFFFF;
4600 if_maddr_rlock(ifp);
4601 TAILQ_FOREACH(ifma, &sc->alc_ifp->if_multiaddrs, ifma_link) {
4602 if (ifma->ifma_addr->sa_family != AF_LINK)
4604 crc = ether_crc32_be(LLADDR((struct sockaddr_dl *)
4605 ifma->ifma_addr), ETHER_ADDR_LEN);
4606 mchash[crc >> 31] |= 1 << ((crc >> 26) & 0x1f);
4608 if_maddr_runlock(ifp);
4611 CSR_WRITE_4(sc, ALC_MAR0, mchash[0]);
4612 CSR_WRITE_4(sc, ALC_MAR1, mchash[1]);
4613 CSR_WRITE_4(sc, ALC_MAC_CFG, rxcfg);
4617 sysctl_int_range(SYSCTL_HANDLER_ARGS, int low, int high)
4623 value = *(int *)arg1;
4624 error = sysctl_handle_int(oidp, &value, 0, req);
4625 if (error || req->newptr == NULL)
4627 if (value < low || value > high)
4629 *(int *)arg1 = value;
4635 sysctl_hw_alc_proc_limit(SYSCTL_HANDLER_ARGS)
4637 return (sysctl_int_range(oidp, arg1, arg2, req,
4638 ALC_PROC_MIN, ALC_PROC_MAX));
4642 sysctl_hw_alc_int_mod(SYSCTL_HANDLER_ARGS)
4645 return (sysctl_int_range(oidp, arg1, arg2, req,
4646 ALC_IM_TIMER_MIN, ALC_IM_TIMER_MAX));