2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2009, Pyun YongHyeon <yongari@FreeBSD.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice unmodified, this list of conditions, and the following
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 /* Driver for Atheros AR813x/AR815x PCIe Ethernet. */
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
35 #include <sys/param.h>
36 #include <sys/systm.h>
38 #include <sys/endian.h>
39 #include <sys/kernel.h>
41 #include <sys/malloc.h>
43 #include <sys/module.h>
44 #include <sys/mutex.h>
46 #include <sys/queue.h>
47 #include <sys/socket.h>
48 #include <sys/sockio.h>
49 #include <sys/sysctl.h>
50 #include <sys/taskqueue.h>
54 #include <net/if_var.h>
55 #include <net/if_arp.h>
56 #include <net/ethernet.h>
57 #include <net/if_dl.h>
58 #include <net/if_llc.h>
59 #include <net/if_media.h>
60 #include <net/if_types.h>
61 #include <net/if_vlan_var.h>
63 #include <netinet/in.h>
64 #include <netinet/in_systm.h>
65 #include <netinet/ip.h>
66 #include <netinet/tcp.h>
67 #include <netinet/netdump/netdump.h>
69 #include <dev/mii/mii.h>
70 #include <dev/mii/miivar.h>
72 #include <dev/pci/pcireg.h>
73 #include <dev/pci/pcivar.h>
75 #include <machine/bus.h>
76 #include <machine/in_cksum.h>
78 #include <dev/alc/if_alcreg.h>
79 #include <dev/alc/if_alcvar.h>
81 /* "device miibus" required. See GENERIC if you get errors here. */
82 #include "miibus_if.h"
83 #undef ALC_USE_CUSTOM_CSUM
85 #ifdef ALC_USE_CUSTOM_CSUM
86 #define ALC_CSUM_FEATURES (CSUM_TCP | CSUM_UDP)
88 #define ALC_CSUM_FEATURES (CSUM_IP | CSUM_TCP | CSUM_UDP)
91 MODULE_DEPEND(alc, pci, 1, 1, 1);
92 MODULE_DEPEND(alc, ether, 1, 1, 1);
93 MODULE_DEPEND(alc, miibus, 1, 1, 1);
96 static int msi_disable = 0;
97 static int msix_disable = 0;
98 TUNABLE_INT("hw.alc.msi_disable", &msi_disable);
99 TUNABLE_INT("hw.alc.msix_disable", &msix_disable);
102 * Devices supported by this driver.
104 static struct alc_ident alc_ident_table[] = {
105 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8131, 9 * 1024,
106 "Atheros AR8131 PCIe Gigabit Ethernet" },
107 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8132, 9 * 1024,
108 "Atheros AR8132 PCIe Fast Ethernet" },
109 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8151, 6 * 1024,
110 "Atheros AR8151 v1.0 PCIe Gigabit Ethernet" },
111 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8151_V2, 6 * 1024,
112 "Atheros AR8151 v2.0 PCIe Gigabit Ethernet" },
113 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8152_B, 6 * 1024,
114 "Atheros AR8152 v1.1 PCIe Fast Ethernet" },
115 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8152_B2, 6 * 1024,
116 "Atheros AR8152 v2.0 PCIe Fast Ethernet" },
117 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8161, 9 * 1024,
118 "Atheros AR8161 PCIe Gigabit Ethernet" },
119 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8162, 9 * 1024,
120 "Atheros AR8162 PCIe Fast Ethernet" },
121 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8171, 9 * 1024,
122 "Atheros AR8171 PCIe Gigabit Ethernet" },
123 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8172, 9 * 1024,
124 "Atheros AR8172 PCIe Fast Ethernet" },
125 { VENDORID_ATHEROS, DEVICEID_ATHEROS_E2200, 9 * 1024,
126 "Killer E2200 Gigabit Ethernet" },
127 { VENDORID_ATHEROS, DEVICEID_ATHEROS_E2400, 9 * 1024,
128 "Killer E2400 Gigabit Ethernet" },
129 { VENDORID_ATHEROS, DEVICEID_ATHEROS_E2500, 9 * 1024,
130 "Killer E2500 Gigabit Ethernet" },
134 static void alc_aspm(struct alc_softc *, int, int);
135 static void alc_aspm_813x(struct alc_softc *, int);
136 static void alc_aspm_816x(struct alc_softc *, int);
137 static int alc_attach(device_t);
138 static int alc_check_boundary(struct alc_softc *);
139 static void alc_config_msi(struct alc_softc *);
140 static int alc_detach(device_t);
141 static void alc_disable_l0s_l1(struct alc_softc *);
142 static int alc_dma_alloc(struct alc_softc *);
143 static void alc_dma_free(struct alc_softc *);
144 static void alc_dmamap_cb(void *, bus_dma_segment_t *, int, int);
145 static void alc_dsp_fixup(struct alc_softc *, int);
146 static int alc_encap(struct alc_softc *, struct mbuf **);
147 static struct alc_ident *
148 alc_find_ident(device_t);
149 #ifndef __NO_STRICT_ALIGNMENT
151 alc_fixup_rx(struct ifnet *, struct mbuf *);
153 static void alc_get_macaddr(struct alc_softc *);
154 static void alc_get_macaddr_813x(struct alc_softc *);
155 static void alc_get_macaddr_816x(struct alc_softc *);
156 static void alc_get_macaddr_par(struct alc_softc *);
157 static void alc_init(void *);
158 static void alc_init_cmb(struct alc_softc *);
159 static void alc_init_locked(struct alc_softc *);
160 static void alc_init_rr_ring(struct alc_softc *);
161 static int alc_init_rx_ring(struct alc_softc *);
162 static void alc_init_smb(struct alc_softc *);
163 static void alc_init_tx_ring(struct alc_softc *);
164 static void alc_int_task(void *, int);
165 static int alc_intr(void *);
166 static int alc_ioctl(struct ifnet *, u_long, caddr_t);
167 static void alc_mac_config(struct alc_softc *);
168 static uint32_t alc_mii_readreg_813x(struct alc_softc *, int, int);
169 static uint32_t alc_mii_readreg_816x(struct alc_softc *, int, int);
170 static uint32_t alc_mii_writereg_813x(struct alc_softc *, int, int, int);
171 static uint32_t alc_mii_writereg_816x(struct alc_softc *, int, int, int);
172 static int alc_miibus_readreg(device_t, int, int);
173 static void alc_miibus_statchg(device_t);
174 static int alc_miibus_writereg(device_t, int, int, int);
175 static uint32_t alc_miidbg_readreg(struct alc_softc *, int);
176 static uint32_t alc_miidbg_writereg(struct alc_softc *, int, int);
177 static uint32_t alc_miiext_readreg(struct alc_softc *, int, int);
178 static uint32_t alc_miiext_writereg(struct alc_softc *, int, int, int);
179 static int alc_mediachange(struct ifnet *);
180 static int alc_mediachange_locked(struct alc_softc *);
181 static void alc_mediastatus(struct ifnet *, struct ifmediareq *);
182 static int alc_newbuf(struct alc_softc *, struct alc_rxdesc *);
183 static void alc_osc_reset(struct alc_softc *);
184 static void alc_phy_down(struct alc_softc *);
185 static void alc_phy_reset(struct alc_softc *);
186 static void alc_phy_reset_813x(struct alc_softc *);
187 static void alc_phy_reset_816x(struct alc_softc *);
188 static int alc_probe(device_t);
189 static void alc_reset(struct alc_softc *);
190 static int alc_resume(device_t);
191 static void alc_rxeof(struct alc_softc *, struct rx_rdesc *);
192 static int alc_rxintr(struct alc_softc *, int);
193 static void alc_rxfilter(struct alc_softc *);
194 static void alc_rxvlan(struct alc_softc *);
195 static void alc_setlinkspeed(struct alc_softc *);
196 static void alc_setwol(struct alc_softc *);
197 static void alc_setwol_813x(struct alc_softc *);
198 static void alc_setwol_816x(struct alc_softc *);
199 static int alc_shutdown(device_t);
200 static void alc_start(struct ifnet *);
201 static void alc_start_locked(struct ifnet *);
202 static void alc_start_queue(struct alc_softc *);
203 static void alc_start_tx(struct alc_softc *);
204 static void alc_stats_clear(struct alc_softc *);
205 static void alc_stats_update(struct alc_softc *);
206 static void alc_stop(struct alc_softc *);
207 static void alc_stop_mac(struct alc_softc *);
208 static void alc_stop_queue(struct alc_softc *);
209 static int alc_suspend(device_t);
210 static void alc_sysctl_node(struct alc_softc *);
211 static void alc_tick(void *);
212 static void alc_txeof(struct alc_softc *);
213 static void alc_watchdog(struct alc_softc *);
214 static int sysctl_int_range(SYSCTL_HANDLER_ARGS, int, int);
215 static int sysctl_hw_alc_proc_limit(SYSCTL_HANDLER_ARGS);
216 static int sysctl_hw_alc_int_mod(SYSCTL_HANDLER_ARGS);
220 static device_method_t alc_methods[] = {
221 /* Device interface. */
222 DEVMETHOD(device_probe, alc_probe),
223 DEVMETHOD(device_attach, alc_attach),
224 DEVMETHOD(device_detach, alc_detach),
225 DEVMETHOD(device_shutdown, alc_shutdown),
226 DEVMETHOD(device_suspend, alc_suspend),
227 DEVMETHOD(device_resume, alc_resume),
230 DEVMETHOD(miibus_readreg, alc_miibus_readreg),
231 DEVMETHOD(miibus_writereg, alc_miibus_writereg),
232 DEVMETHOD(miibus_statchg, alc_miibus_statchg),
237 static driver_t alc_driver = {
240 sizeof(struct alc_softc)
243 static devclass_t alc_devclass;
245 DRIVER_MODULE(alc, pci, alc_driver, alc_devclass, 0, 0);
246 DRIVER_MODULE(miibus, alc, miibus_driver, miibus_devclass, 0, 0);
248 static struct resource_spec alc_res_spec_mem[] = {
249 { SYS_RES_MEMORY, PCIR_BAR(0), RF_ACTIVE },
253 static struct resource_spec alc_irq_spec_legacy[] = {
254 { SYS_RES_IRQ, 0, RF_ACTIVE | RF_SHAREABLE },
258 static struct resource_spec alc_irq_spec_msi[] = {
259 { SYS_RES_IRQ, 1, RF_ACTIVE },
263 static struct resource_spec alc_irq_spec_msix[] = {
264 { SYS_RES_IRQ, 1, RF_ACTIVE },
268 static uint32_t alc_dma_burst[] = { 128, 256, 512, 1024, 2048, 4096, 0, 0 };
271 alc_miibus_readreg(device_t dev, int phy, int reg)
273 struct alc_softc *sc;
276 sc = device_get_softc(dev);
277 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
278 v = alc_mii_readreg_816x(sc, phy, reg);
280 v = alc_mii_readreg_813x(sc, phy, reg);
285 alc_mii_readreg_813x(struct alc_softc *sc, int phy, int reg)
291 * For AR8132 fast ethernet controller, do not report 1000baseT
292 * capability to mii(4). Even though AR8132 uses the same
293 * model/revision number of F1 gigabit PHY, the PHY has no
294 * ability to establish 1000baseT link.
296 if ((sc->alc_flags & ALC_FLAG_FASTETHER) != 0 &&
300 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_READ |
301 MDIO_SUP_PREAMBLE | MDIO_CLK_25_4 | MDIO_REG_ADDR(reg));
302 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
304 v = CSR_READ_4(sc, ALC_MDIO);
305 if ((v & (MDIO_OP_EXECUTE | MDIO_OP_BUSY)) == 0)
310 device_printf(sc->alc_dev, "phy read timeout : %d\n", reg);
314 return ((v & MDIO_DATA_MASK) >> MDIO_DATA_SHIFT);
318 alc_mii_readreg_816x(struct alc_softc *sc, int phy, int reg)
323 if ((sc->alc_flags & ALC_FLAG_LINK) != 0)
324 clk = MDIO_CLK_25_128;
327 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_READ |
328 MDIO_SUP_PREAMBLE | clk | MDIO_REG_ADDR(reg));
329 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
331 v = CSR_READ_4(sc, ALC_MDIO);
332 if ((v & MDIO_OP_BUSY) == 0)
337 device_printf(sc->alc_dev, "phy read timeout : %d\n", reg);
341 return ((v & MDIO_DATA_MASK) >> MDIO_DATA_SHIFT);
345 alc_miibus_writereg(device_t dev, int phy, int reg, int val)
347 struct alc_softc *sc;
350 sc = device_get_softc(dev);
351 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
352 v = alc_mii_writereg_816x(sc, phy, reg, val);
354 v = alc_mii_writereg_813x(sc, phy, reg, val);
359 alc_mii_writereg_813x(struct alc_softc *sc, int phy, int reg, int val)
364 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_WRITE |
365 (val & MDIO_DATA_MASK) << MDIO_DATA_SHIFT |
366 MDIO_SUP_PREAMBLE | MDIO_CLK_25_4 | MDIO_REG_ADDR(reg));
367 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
369 v = CSR_READ_4(sc, ALC_MDIO);
370 if ((v & (MDIO_OP_EXECUTE | MDIO_OP_BUSY)) == 0)
375 device_printf(sc->alc_dev, "phy write timeout : %d\n", reg);
381 alc_mii_writereg_816x(struct alc_softc *sc, int phy, int reg, int val)
386 if ((sc->alc_flags & ALC_FLAG_LINK) != 0)
387 clk = MDIO_CLK_25_128;
390 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_WRITE |
391 ((val & MDIO_DATA_MASK) << MDIO_DATA_SHIFT) | MDIO_REG_ADDR(reg) |
392 MDIO_SUP_PREAMBLE | clk);
393 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
395 v = CSR_READ_4(sc, ALC_MDIO);
396 if ((v & MDIO_OP_BUSY) == 0)
401 device_printf(sc->alc_dev, "phy write timeout : %d\n", reg);
407 alc_miibus_statchg(device_t dev)
409 struct alc_softc *sc;
410 struct mii_data *mii;
414 sc = device_get_softc(dev);
416 mii = device_get_softc(sc->alc_miibus);
418 if (mii == NULL || ifp == NULL ||
419 (ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
422 sc->alc_flags &= ~ALC_FLAG_LINK;
423 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) ==
424 (IFM_ACTIVE | IFM_AVALID)) {
425 switch (IFM_SUBTYPE(mii->mii_media_active)) {
428 sc->alc_flags |= ALC_FLAG_LINK;
431 if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0)
432 sc->alc_flags |= ALC_FLAG_LINK;
438 /* Stop Rx/Tx MACs. */
441 /* Program MACs with resolved speed/duplex/flow-control. */
442 if ((sc->alc_flags & ALC_FLAG_LINK) != 0) {
445 /* Re-enable Tx/Rx MACs. */
446 reg = CSR_READ_4(sc, ALC_MAC_CFG);
447 reg |= MAC_CFG_TX_ENB | MAC_CFG_RX_ENB;
448 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
450 alc_aspm(sc, 0, IFM_SUBTYPE(mii->mii_media_active));
451 alc_dsp_fixup(sc, IFM_SUBTYPE(mii->mii_media_active));
455 alc_miidbg_readreg(struct alc_softc *sc, int reg)
458 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_ADDR,
460 return (alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
465 alc_miidbg_writereg(struct alc_softc *sc, int reg, int val)
468 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_ADDR,
470 return (alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
471 ALC_MII_DBG_DATA, val));
475 alc_miiext_readreg(struct alc_softc *sc, int devaddr, int reg)
480 CSR_WRITE_4(sc, ALC_EXT_MDIO, EXT_MDIO_REG(reg) |
481 EXT_MDIO_DEVADDR(devaddr));
482 if ((sc->alc_flags & ALC_FLAG_LINK) != 0)
483 clk = MDIO_CLK_25_128;
486 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_READ |
487 MDIO_SUP_PREAMBLE | clk | MDIO_MODE_EXT);
488 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
490 v = CSR_READ_4(sc, ALC_MDIO);
491 if ((v & MDIO_OP_BUSY) == 0)
496 device_printf(sc->alc_dev, "phy ext read timeout : %d, %d\n",
501 return ((v & MDIO_DATA_MASK) >> MDIO_DATA_SHIFT);
505 alc_miiext_writereg(struct alc_softc *sc, int devaddr, int reg, int val)
510 CSR_WRITE_4(sc, ALC_EXT_MDIO, EXT_MDIO_REG(reg) |
511 EXT_MDIO_DEVADDR(devaddr));
512 if ((sc->alc_flags & ALC_FLAG_LINK) != 0)
513 clk = MDIO_CLK_25_128;
516 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_WRITE |
517 ((val & MDIO_DATA_MASK) << MDIO_DATA_SHIFT) |
518 MDIO_SUP_PREAMBLE | clk | MDIO_MODE_EXT);
519 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
521 v = CSR_READ_4(sc, ALC_MDIO);
522 if ((v & MDIO_OP_BUSY) == 0)
527 device_printf(sc->alc_dev, "phy ext write timeout : %d, %d\n",
534 alc_dsp_fixup(struct alc_softc *sc, int media)
536 uint16_t agc, len, val;
538 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
540 if (AR816X_REV(sc->alc_rev) >= AR816X_REV_C0)
545 * 1000BT/AZ, wrong cable length
547 if ((sc->alc_flags & ALC_FLAG_LINK) != 0) {
548 len = alc_miiext_readreg(sc, MII_EXT_PCS, MII_EXT_CLDCTL6);
549 len = (len >> EXT_CLDCTL6_CAB_LEN_SHIFT) &
550 EXT_CLDCTL6_CAB_LEN_MASK;
551 agc = alc_miidbg_readreg(sc, MII_DBG_AGC);
552 agc = (agc >> DBG_AGC_2_VGA_SHIFT) & DBG_AGC_2_VGA_MASK;
553 if ((media == IFM_1000_T && len > EXT_CLDCTL6_CAB_LEN_SHORT1G &&
554 agc > DBG_AGC_LONG1G_LIMT) ||
555 (media == IFM_100_TX && len > DBG_AGC_LONG100M_LIMT &&
556 agc > DBG_AGC_LONG1G_LIMT)) {
557 alc_miidbg_writereg(sc, MII_DBG_AZ_ANADECT,
558 DBG_AZ_ANADECT_LONG);
559 val = alc_miiext_readreg(sc, MII_EXT_ANEG,
561 val |= ANEG_AFEE_10BT_100M_TH;
562 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_AFE,
565 alc_miidbg_writereg(sc, MII_DBG_AZ_ANADECT,
566 DBG_AZ_ANADECT_DEFAULT);
567 val = alc_miiext_readreg(sc, MII_EXT_ANEG,
569 val &= ~ANEG_AFEE_10BT_100M_TH;
570 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_AFE,
573 if ((sc->alc_flags & ALC_FLAG_LINK_WAR) != 0 &&
574 AR816X_REV(sc->alc_rev) == AR816X_REV_B0) {
575 if (media == IFM_1000_T) {
577 * Giga link threshold, raise the tolerance of
580 val = alc_miidbg_readreg(sc, MII_DBG_MSE20DB);
581 val &= ~DBG_MSE20DB_TH_MASK;
582 val |= (DBG_MSE20DB_TH_HI <<
583 DBG_MSE20DB_TH_SHIFT);
584 alc_miidbg_writereg(sc, MII_DBG_MSE20DB, val);
585 } else if (media == IFM_100_TX)
586 alc_miidbg_writereg(sc, MII_DBG_MSE16DB,
590 val = alc_miiext_readreg(sc, MII_EXT_ANEG, MII_EXT_ANEG_AFE);
591 val &= ~ANEG_AFEE_10BT_100M_TH;
592 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_AFE, val);
593 if ((sc->alc_flags & ALC_FLAG_LINK_WAR) != 0 &&
594 AR816X_REV(sc->alc_rev) == AR816X_REV_B0) {
595 alc_miidbg_writereg(sc, MII_DBG_MSE16DB,
597 val = alc_miidbg_readreg(sc, MII_DBG_MSE20DB);
598 val &= ~DBG_MSE20DB_TH_MASK;
599 val |= (DBG_MSE20DB_TH_DEFAULT << DBG_MSE20DB_TH_SHIFT);
600 alc_miidbg_writereg(sc, MII_DBG_MSE20DB, val);
606 alc_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr)
608 struct alc_softc *sc;
609 struct mii_data *mii;
613 if ((ifp->if_flags & IFF_UP) == 0) {
617 mii = device_get_softc(sc->alc_miibus);
620 ifmr->ifm_status = mii->mii_media_status;
621 ifmr->ifm_active = mii->mii_media_active;
626 alc_mediachange(struct ifnet *ifp)
628 struct alc_softc *sc;
633 error = alc_mediachange_locked(sc);
640 alc_mediachange_locked(struct alc_softc *sc)
642 struct mii_data *mii;
643 struct mii_softc *miisc;
648 mii = device_get_softc(sc->alc_miibus);
649 LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
651 error = mii_mediachg(mii);
656 static struct alc_ident *
657 alc_find_ident(device_t dev)
659 struct alc_ident *ident;
660 uint16_t vendor, devid;
662 vendor = pci_get_vendor(dev);
663 devid = pci_get_device(dev);
664 for (ident = alc_ident_table; ident->name != NULL; ident++) {
665 if (vendor == ident->vendorid && devid == ident->deviceid)
673 alc_probe(device_t dev)
675 struct alc_ident *ident;
677 ident = alc_find_ident(dev);
679 device_set_desc(dev, ident->name);
680 return (BUS_PROBE_DEFAULT);
687 alc_get_macaddr(struct alc_softc *sc)
690 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
691 alc_get_macaddr_816x(sc);
693 alc_get_macaddr_813x(sc);
697 alc_get_macaddr_813x(struct alc_softc *sc)
704 opt = CSR_READ_4(sc, ALC_OPT_CFG);
705 if ((CSR_READ_4(sc, ALC_MASTER_CFG) & MASTER_OTP_SEL) != 0 &&
706 (CSR_READ_4(sc, ALC_TWSI_DEBUG) & TWSI_DEBUG_DEV_EXIST) != 0) {
708 * EEPROM found, let TWSI reload EEPROM configuration.
709 * This will set ethernet address of controller.
712 switch (sc->alc_ident->deviceid) {
713 case DEVICEID_ATHEROS_AR8131:
714 case DEVICEID_ATHEROS_AR8132:
715 if ((opt & OPT_CFG_CLK_ENB) == 0) {
716 opt |= OPT_CFG_CLK_ENB;
717 CSR_WRITE_4(sc, ALC_OPT_CFG, opt);
718 CSR_READ_4(sc, ALC_OPT_CFG);
722 case DEVICEID_ATHEROS_AR8151:
723 case DEVICEID_ATHEROS_AR8151_V2:
724 case DEVICEID_ATHEROS_AR8152_B:
725 case DEVICEID_ATHEROS_AR8152_B2:
726 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
727 ALC_MII_DBG_ADDR, 0x00);
728 val = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
730 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
731 ALC_MII_DBG_DATA, val & 0xFF7F);
732 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
733 ALC_MII_DBG_ADDR, 0x3B);
734 val = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
736 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
737 ALC_MII_DBG_DATA, val | 0x0008);
742 CSR_WRITE_4(sc, ALC_LTSSM_ID_CFG,
743 CSR_READ_4(sc, ALC_LTSSM_ID_CFG) & ~LTSSM_ID_WRO_ENB);
744 CSR_WRITE_4(sc, ALC_WOL_CFG, 0);
745 CSR_READ_4(sc, ALC_WOL_CFG);
747 CSR_WRITE_4(sc, ALC_TWSI_CFG, CSR_READ_4(sc, ALC_TWSI_CFG) |
748 TWSI_CFG_SW_LD_START);
749 for (i = 100; i > 0; i--) {
751 if ((CSR_READ_4(sc, ALC_TWSI_CFG) &
752 TWSI_CFG_SW_LD_START) == 0)
756 device_printf(sc->alc_dev,
757 "reloading EEPROM timeout!\n");
760 device_printf(sc->alc_dev, "EEPROM not found!\n");
763 switch (sc->alc_ident->deviceid) {
764 case DEVICEID_ATHEROS_AR8131:
765 case DEVICEID_ATHEROS_AR8132:
766 if ((opt & OPT_CFG_CLK_ENB) != 0) {
767 opt &= ~OPT_CFG_CLK_ENB;
768 CSR_WRITE_4(sc, ALC_OPT_CFG, opt);
769 CSR_READ_4(sc, ALC_OPT_CFG);
773 case DEVICEID_ATHEROS_AR8151:
774 case DEVICEID_ATHEROS_AR8151_V2:
775 case DEVICEID_ATHEROS_AR8152_B:
776 case DEVICEID_ATHEROS_AR8152_B2:
777 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
778 ALC_MII_DBG_ADDR, 0x00);
779 val = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
781 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
782 ALC_MII_DBG_DATA, val | 0x0080);
783 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
784 ALC_MII_DBG_ADDR, 0x3B);
785 val = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
787 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
788 ALC_MII_DBG_DATA, val & 0xFFF7);
794 alc_get_macaddr_par(sc);
798 alc_get_macaddr_816x(struct alc_softc *sc)
804 /* Try to reload station address via TWSI. */
805 for (i = 100; i > 0; i--) {
806 reg = CSR_READ_4(sc, ALC_SLD);
807 if ((reg & (SLD_PROGRESS | SLD_START)) == 0)
812 CSR_WRITE_4(sc, ALC_SLD, reg | SLD_START);
813 for (i = 100; i > 0; i--) {
815 reg = CSR_READ_4(sc, ALC_SLD);
816 if ((reg & SLD_START) == 0)
821 else if (bootverbose)
822 device_printf(sc->alc_dev,
823 "reloading station address via TWSI timed out!\n");
826 /* Try to reload station address from EEPROM or FLASH. */
828 reg = CSR_READ_4(sc, ALC_EEPROM_LD);
829 if ((reg & (EEPROM_LD_EEPROM_EXIST |
830 EEPROM_LD_FLASH_EXIST)) != 0) {
831 for (i = 100; i > 0; i--) {
832 reg = CSR_READ_4(sc, ALC_EEPROM_LD);
833 if ((reg & (EEPROM_LD_PROGRESS |
834 EEPROM_LD_START)) == 0)
839 CSR_WRITE_4(sc, ALC_EEPROM_LD, reg |
841 for (i = 100; i > 0; i--) {
843 reg = CSR_READ_4(sc, ALC_EEPROM_LD);
844 if ((reg & EEPROM_LD_START) == 0)
847 } else if (bootverbose)
848 device_printf(sc->alc_dev,
849 "reloading EEPROM/FLASH timed out!\n");
853 alc_get_macaddr_par(sc);
857 alc_get_macaddr_par(struct alc_softc *sc)
861 ea[0] = CSR_READ_4(sc, ALC_PAR0);
862 ea[1] = CSR_READ_4(sc, ALC_PAR1);
863 sc->alc_eaddr[0] = (ea[1] >> 8) & 0xFF;
864 sc->alc_eaddr[1] = (ea[1] >> 0) & 0xFF;
865 sc->alc_eaddr[2] = (ea[0] >> 24) & 0xFF;
866 sc->alc_eaddr[3] = (ea[0] >> 16) & 0xFF;
867 sc->alc_eaddr[4] = (ea[0] >> 8) & 0xFF;
868 sc->alc_eaddr[5] = (ea[0] >> 0) & 0xFF;
872 alc_disable_l0s_l1(struct alc_softc *sc)
876 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
877 /* Another magic from vendor. */
878 pmcfg = CSR_READ_4(sc, ALC_PM_CFG);
879 pmcfg &= ~(PM_CFG_L1_ENTRY_TIMER_MASK | PM_CFG_CLK_SWH_L1 |
880 PM_CFG_ASPM_L0S_ENB | PM_CFG_ASPM_L1_ENB |
881 PM_CFG_MAC_ASPM_CHK | PM_CFG_SERDES_PD_EX_L1);
882 pmcfg |= PM_CFG_SERDES_BUDS_RX_L1_ENB |
883 PM_CFG_SERDES_PLL_L1_ENB | PM_CFG_SERDES_L1_ENB;
884 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg);
889 alc_phy_reset(struct alc_softc *sc)
892 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
893 alc_phy_reset_816x(sc);
895 alc_phy_reset_813x(sc);
899 alc_phy_reset_813x(struct alc_softc *sc)
903 /* Reset magic from Linux. */
904 CSR_WRITE_2(sc, ALC_GPHY_CFG, GPHY_CFG_SEL_ANA_RESET);
905 CSR_READ_2(sc, ALC_GPHY_CFG);
908 CSR_WRITE_2(sc, ALC_GPHY_CFG, GPHY_CFG_EXT_RESET |
909 GPHY_CFG_SEL_ANA_RESET);
910 CSR_READ_2(sc, ALC_GPHY_CFG);
913 /* DSP fixup, Vendor magic. */
914 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B) {
915 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
916 ALC_MII_DBG_ADDR, 0x000A);
917 data = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
919 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
920 ALC_MII_DBG_DATA, data & 0xDFFF);
922 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151 ||
923 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2 ||
924 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B ||
925 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2) {
926 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
927 ALC_MII_DBG_ADDR, 0x003B);
928 data = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
930 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
931 ALC_MII_DBG_DATA, data & 0xFFF7);
934 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151) {
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, 0x929D);
940 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8131 ||
941 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8132 ||
942 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2 ||
943 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2) {
944 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
945 ALC_MII_DBG_ADDR, 0x0029);
946 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
947 ALC_MII_DBG_DATA, 0xB6DD);
950 /* Load DSP codes, vendor magic. */
951 data = ANA_LOOP_SEL_10BT | ANA_EN_MASK_TB | ANA_EN_10BT_IDLE |
952 ((1 << ANA_INTERVAL_SEL_TIMER_SHIFT) & ANA_INTERVAL_SEL_TIMER_MASK);
953 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
954 ALC_MII_DBG_ADDR, MII_ANA_CFG18);
955 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
956 ALC_MII_DBG_DATA, data);
958 data = ((2 << ANA_SERDES_CDR_BW_SHIFT) & ANA_SERDES_CDR_BW_MASK) |
959 ANA_SERDES_EN_DEEM | ANA_SERDES_SEL_HSP | ANA_SERDES_EN_PLL |
961 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
962 ALC_MII_DBG_ADDR, MII_ANA_CFG5);
963 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
964 ALC_MII_DBG_DATA, data);
966 data = ((44 << ANA_LONG_CABLE_TH_100_SHIFT) &
967 ANA_LONG_CABLE_TH_100_MASK) |
968 ((33 << ANA_SHORT_CABLE_TH_100_SHIFT) &
969 ANA_SHORT_CABLE_TH_100_SHIFT) |
970 ANA_BP_BAD_LINK_ACCUM | ANA_BP_SMALL_BW;
971 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
972 ALC_MII_DBG_ADDR, MII_ANA_CFG54);
973 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
974 ALC_MII_DBG_DATA, data);
976 data = ((11 << ANA_IECHO_ADJ_3_SHIFT) & ANA_IECHO_ADJ_3_MASK) |
977 ((11 << ANA_IECHO_ADJ_2_SHIFT) & ANA_IECHO_ADJ_2_MASK) |
978 ((8 << ANA_IECHO_ADJ_1_SHIFT) & ANA_IECHO_ADJ_1_MASK) |
979 ((8 << ANA_IECHO_ADJ_0_SHIFT) & ANA_IECHO_ADJ_0_MASK);
980 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
981 ALC_MII_DBG_ADDR, MII_ANA_CFG4);
982 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
983 ALC_MII_DBG_DATA, data);
985 data = ((7 & ANA_MANUL_SWICH_ON_SHIFT) & ANA_MANUL_SWICH_ON_MASK) |
986 ANA_RESTART_CAL | ANA_MAN_ENABLE | ANA_SEL_HSP | ANA_EN_HB |
988 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
989 ALC_MII_DBG_ADDR, MII_ANA_CFG0);
990 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
991 ALC_MII_DBG_DATA, data);
994 /* Disable hibernation. */
995 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_ADDR,
997 data = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
1000 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_DATA,
1003 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_ADDR,
1005 data = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
1008 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_DATA,
1013 alc_phy_reset_816x(struct alc_softc *sc)
1017 val = CSR_READ_4(sc, ALC_GPHY_CFG);
1018 val &= ~(GPHY_CFG_EXT_RESET | GPHY_CFG_LED_MODE |
1019 GPHY_CFG_GATE_25M_ENB | GPHY_CFG_PHY_IDDQ | GPHY_CFG_PHY_PLL_ON |
1020 GPHY_CFG_PWDOWN_HW | GPHY_CFG_100AB_ENB);
1021 val |= GPHY_CFG_SEL_ANA_RESET;
1023 val |= GPHY_CFG_HIB_PULSE | GPHY_CFG_HIB_EN | GPHY_CFG_SEL_ANA_RESET;
1025 /* Disable PHY hibernation. */
1026 val &= ~(GPHY_CFG_HIB_PULSE | GPHY_CFG_HIB_EN);
1028 CSR_WRITE_4(sc, ALC_GPHY_CFG, val);
1030 CSR_WRITE_4(sc, ALC_GPHY_CFG, val | GPHY_CFG_EXT_RESET);
1033 /* Vendor PHY magic. */
1035 alc_miidbg_writereg(sc, MII_DBG_LEGCYPS, DBG_LEGCYPS_DEFAULT);
1036 alc_miidbg_writereg(sc, MII_DBG_SYSMODCTL, DBG_SYSMODCTL_DEFAULT);
1037 alc_miiext_writereg(sc, MII_EXT_PCS, MII_EXT_VDRVBIAS,
1038 EXT_VDRVBIAS_DEFAULT);
1040 /* Disable PHY hibernation. */
1041 alc_miidbg_writereg(sc, MII_DBG_LEGCYPS,
1042 DBG_LEGCYPS_DEFAULT & ~DBG_LEGCYPS_ENB);
1043 alc_miidbg_writereg(sc, MII_DBG_HIBNEG,
1044 DBG_HIBNEG_DEFAULT & ~(DBG_HIBNEG_PSHIB_EN | DBG_HIBNEG_HIB_PULSE));
1045 alc_miidbg_writereg(sc, MII_DBG_GREENCFG, DBG_GREENCFG_DEFAULT);
1048 /* XXX Disable EEE. */
1049 val = CSR_READ_4(sc, ALC_LPI_CTL);
1050 val &= ~LPI_CTL_ENB;
1051 CSR_WRITE_4(sc, ALC_LPI_CTL, val);
1052 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_LOCAL_EEEADV, 0);
1054 /* PHY power saving. */
1055 alc_miidbg_writereg(sc, MII_DBG_TST10BTCFG, DBG_TST10BTCFG_DEFAULT);
1056 alc_miidbg_writereg(sc, MII_DBG_SRDSYSMOD, DBG_SRDSYSMOD_DEFAULT);
1057 alc_miidbg_writereg(sc, MII_DBG_TST100BTCFG, DBG_TST100BTCFG_DEFAULT);
1058 alc_miidbg_writereg(sc, MII_DBG_ANACTL, DBG_ANACTL_DEFAULT);
1059 val = alc_miidbg_readreg(sc, MII_DBG_GREENCFG2);
1060 val &= ~DBG_GREENCFG2_GATE_DFSE_EN;
1061 alc_miidbg_writereg(sc, MII_DBG_GREENCFG2, val);
1063 /* RTL8139C, 120m issue. */
1064 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_NLP78,
1065 ANEG_NLP78_120M_DEFAULT);
1066 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_S3DIG10,
1067 ANEG_S3DIG10_DEFAULT);
1069 if ((sc->alc_flags & ALC_FLAG_LINK_WAR) != 0) {
1070 /* Turn off half amplitude. */
1071 val = alc_miiext_readreg(sc, MII_EXT_PCS, MII_EXT_CLDCTL3);
1072 val |= EXT_CLDCTL3_BP_CABLE1TH_DET_GT;
1073 alc_miiext_writereg(sc, MII_EXT_PCS, MII_EXT_CLDCTL3, val);
1074 /* Turn off Green feature. */
1075 val = alc_miidbg_readreg(sc, MII_DBG_GREENCFG2);
1076 val |= DBG_GREENCFG2_BP_GREEN;
1077 alc_miidbg_writereg(sc, MII_DBG_GREENCFG2, val);
1078 /* Turn off half bias. */
1079 val = alc_miiext_readreg(sc, MII_EXT_PCS, MII_EXT_CLDCTL5);
1080 val |= EXT_CLDCTL5_BP_VD_HLFBIAS;
1081 alc_miiext_writereg(sc, MII_EXT_PCS, MII_EXT_CLDCTL5, val);
1086 alc_phy_down(struct alc_softc *sc)
1090 switch (sc->alc_ident->deviceid) {
1091 case DEVICEID_ATHEROS_AR8161:
1092 case DEVICEID_ATHEROS_E2200:
1093 case DEVICEID_ATHEROS_E2400:
1094 case DEVICEID_ATHEROS_E2500:
1095 case DEVICEID_ATHEROS_AR8162:
1096 case DEVICEID_ATHEROS_AR8171:
1097 case DEVICEID_ATHEROS_AR8172:
1098 gphy = CSR_READ_4(sc, ALC_GPHY_CFG);
1099 gphy &= ~(GPHY_CFG_EXT_RESET | GPHY_CFG_LED_MODE |
1100 GPHY_CFG_100AB_ENB | GPHY_CFG_PHY_PLL_ON);
1101 gphy |= GPHY_CFG_HIB_EN | GPHY_CFG_HIB_PULSE |
1102 GPHY_CFG_SEL_ANA_RESET;
1103 gphy |= GPHY_CFG_PHY_IDDQ | GPHY_CFG_PWDOWN_HW;
1104 CSR_WRITE_4(sc, ALC_GPHY_CFG, gphy);
1106 case DEVICEID_ATHEROS_AR8151:
1107 case DEVICEID_ATHEROS_AR8151_V2:
1108 case DEVICEID_ATHEROS_AR8152_B:
1109 case DEVICEID_ATHEROS_AR8152_B2:
1111 * GPHY power down caused more problems on AR8151 v2.0.
1112 * When driver is reloaded after GPHY power down,
1113 * accesses to PHY/MAC registers hung the system. Only
1114 * cold boot recovered from it. I'm not sure whether
1115 * AR8151 v1.0 also requires this one though. I don't
1116 * have AR8151 v1.0 controller in hand.
1117 * The only option left is to isolate the PHY and
1118 * initiates power down the PHY which in turn saves
1119 * more power when driver is unloaded.
1121 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
1122 MII_BMCR, BMCR_ISO | BMCR_PDOWN);
1125 /* Force PHY down. */
1126 CSR_WRITE_2(sc, ALC_GPHY_CFG, GPHY_CFG_EXT_RESET |
1127 GPHY_CFG_SEL_ANA_RESET | GPHY_CFG_PHY_IDDQ |
1128 GPHY_CFG_PWDOWN_HW);
1135 alc_aspm(struct alc_softc *sc, int init, int media)
1138 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
1139 alc_aspm_816x(sc, init);
1141 alc_aspm_813x(sc, media);
1145 alc_aspm_813x(struct alc_softc *sc, int media)
1150 if ((sc->alc_flags & ALC_FLAG_LINK) == 0)
1153 pmcfg = CSR_READ_4(sc, ALC_PM_CFG);
1154 if ((sc->alc_flags & (ALC_FLAG_APS | ALC_FLAG_PCIE)) ==
1155 (ALC_FLAG_APS | ALC_FLAG_PCIE))
1156 linkcfg = CSR_READ_2(sc, sc->alc_expcap +
1160 pmcfg &= ~PM_CFG_SERDES_PD_EX_L1;
1161 pmcfg &= ~(PM_CFG_L1_ENTRY_TIMER_MASK | PM_CFG_LCKDET_TIMER_MASK);
1162 pmcfg |= PM_CFG_MAC_ASPM_CHK;
1163 pmcfg |= (PM_CFG_LCKDET_TIMER_DEFAULT << PM_CFG_LCKDET_TIMER_SHIFT);
1164 pmcfg &= ~(PM_CFG_ASPM_L1_ENB | PM_CFG_ASPM_L0S_ENB);
1166 if ((sc->alc_flags & ALC_FLAG_APS) != 0) {
1167 /* Disable extended sync except AR8152 B v1.0 */
1168 linkcfg &= ~PCIEM_LINK_CTL_EXTENDED_SYNC;
1169 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B &&
1170 sc->alc_rev == ATHEROS_AR8152_B_V10)
1171 linkcfg |= PCIEM_LINK_CTL_EXTENDED_SYNC;
1172 CSR_WRITE_2(sc, sc->alc_expcap + PCIER_LINK_CTL,
1174 pmcfg &= ~(PM_CFG_EN_BUFS_RX_L0S | PM_CFG_SA_DLY_ENB |
1176 pmcfg |= (PM_CFG_L1_ENTRY_TIMER_DEFAULT <<
1177 PM_CFG_L1_ENTRY_TIMER_SHIFT);
1178 pmcfg &= ~PM_CFG_PM_REQ_TIMER_MASK;
1179 pmcfg |= (PM_CFG_PM_REQ_TIMER_DEFAULT <<
1180 PM_CFG_PM_REQ_TIMER_SHIFT);
1181 pmcfg |= PM_CFG_SERDES_PD_EX_L1 | PM_CFG_PCIE_RECV;
1184 if ((sc->alc_flags & ALC_FLAG_LINK) != 0) {
1185 if ((sc->alc_flags & ALC_FLAG_L0S) != 0)
1186 pmcfg |= PM_CFG_ASPM_L0S_ENB;
1187 if ((sc->alc_flags & ALC_FLAG_L1S) != 0)
1188 pmcfg |= PM_CFG_ASPM_L1_ENB;
1189 if ((sc->alc_flags & ALC_FLAG_APS) != 0) {
1190 if (sc->alc_ident->deviceid ==
1191 DEVICEID_ATHEROS_AR8152_B)
1192 pmcfg &= ~PM_CFG_ASPM_L0S_ENB;
1193 pmcfg &= ~(PM_CFG_SERDES_L1_ENB |
1194 PM_CFG_SERDES_PLL_L1_ENB |
1195 PM_CFG_SERDES_BUDS_RX_L1_ENB);
1196 pmcfg |= PM_CFG_CLK_SWH_L1;
1197 if (media == IFM_100_TX || media == IFM_1000_T) {
1198 pmcfg &= ~PM_CFG_L1_ENTRY_TIMER_MASK;
1199 switch (sc->alc_ident->deviceid) {
1200 case DEVICEID_ATHEROS_AR8152_B:
1202 PM_CFG_L1_ENTRY_TIMER_SHIFT);
1204 case DEVICEID_ATHEROS_AR8152_B2:
1205 case DEVICEID_ATHEROS_AR8151_V2:
1207 PM_CFG_L1_ENTRY_TIMER_SHIFT);
1211 PM_CFG_L1_ENTRY_TIMER_SHIFT);
1216 pmcfg |= PM_CFG_SERDES_L1_ENB |
1217 PM_CFG_SERDES_PLL_L1_ENB |
1218 PM_CFG_SERDES_BUDS_RX_L1_ENB;
1219 pmcfg &= ~(PM_CFG_CLK_SWH_L1 |
1220 PM_CFG_ASPM_L1_ENB | PM_CFG_ASPM_L0S_ENB);
1223 pmcfg &= ~(PM_CFG_SERDES_BUDS_RX_L1_ENB | PM_CFG_SERDES_L1_ENB |
1224 PM_CFG_SERDES_PLL_L1_ENB);
1225 pmcfg |= PM_CFG_CLK_SWH_L1;
1226 if ((sc->alc_flags & ALC_FLAG_L1S) != 0)
1227 pmcfg |= PM_CFG_ASPM_L1_ENB;
1229 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg);
1233 alc_aspm_816x(struct alc_softc *sc, int init)
1237 pmcfg = CSR_READ_4(sc, ALC_PM_CFG);
1238 pmcfg &= ~PM_CFG_L1_ENTRY_TIMER_816X_MASK;
1239 pmcfg |= PM_CFG_L1_ENTRY_TIMER_816X_DEFAULT;
1240 pmcfg &= ~PM_CFG_PM_REQ_TIMER_MASK;
1241 pmcfg |= PM_CFG_PM_REQ_TIMER_816X_DEFAULT;
1242 pmcfg &= ~PM_CFG_LCKDET_TIMER_MASK;
1243 pmcfg |= PM_CFG_LCKDET_TIMER_DEFAULT;
1244 pmcfg |= PM_CFG_SERDES_PD_EX_L1 | PM_CFG_CLK_SWH_L1 | PM_CFG_PCIE_RECV;
1245 pmcfg &= ~(PM_CFG_RX_L1_AFTER_L0S | PM_CFG_TX_L1_AFTER_L0S |
1246 PM_CFG_ASPM_L1_ENB | PM_CFG_ASPM_L0S_ENB |
1247 PM_CFG_SERDES_L1_ENB | PM_CFG_SERDES_PLL_L1_ENB |
1248 PM_CFG_SERDES_BUDS_RX_L1_ENB | PM_CFG_SA_DLY_ENB |
1249 PM_CFG_MAC_ASPM_CHK | PM_CFG_HOTRST);
1250 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1 &&
1251 (sc->alc_rev & 0x01) != 0)
1252 pmcfg |= PM_CFG_SERDES_L1_ENB | PM_CFG_SERDES_PLL_L1_ENB;
1253 if ((sc->alc_flags & ALC_FLAG_LINK) != 0) {
1254 /* Link up, enable both L0s, L1s. */
1255 pmcfg |= PM_CFG_ASPM_L0S_ENB | PM_CFG_ASPM_L1_ENB |
1256 PM_CFG_MAC_ASPM_CHK;
1259 pmcfg |= PM_CFG_ASPM_L0S_ENB | PM_CFG_ASPM_L1_ENB |
1260 PM_CFG_MAC_ASPM_CHK;
1261 else if ((sc->alc_ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
1262 pmcfg |= PM_CFG_ASPM_L1_ENB | PM_CFG_MAC_ASPM_CHK;
1264 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg);
1268 alc_init_pcie(struct alc_softc *sc)
1270 const char *aspm_state[] = { "L0s/L1", "L0s", "L1", "L0s/L1" };
1271 uint32_t cap, ctl, val;
1274 /* Clear data link and flow-control protocol error. */
1275 val = CSR_READ_4(sc, ALC_PEX_UNC_ERR_SEV);
1276 val &= ~(PEX_UNC_ERR_SEV_DLP | PEX_UNC_ERR_SEV_FCP);
1277 CSR_WRITE_4(sc, ALC_PEX_UNC_ERR_SEV, val);
1279 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
1280 CSR_WRITE_4(sc, ALC_LTSSM_ID_CFG,
1281 CSR_READ_4(sc, ALC_LTSSM_ID_CFG) & ~LTSSM_ID_WRO_ENB);
1282 CSR_WRITE_4(sc, ALC_PCIE_PHYMISC,
1283 CSR_READ_4(sc, ALC_PCIE_PHYMISC) |
1284 PCIE_PHYMISC_FORCE_RCV_DET);
1285 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B &&
1286 sc->alc_rev == ATHEROS_AR8152_B_V10) {
1287 val = CSR_READ_4(sc, ALC_PCIE_PHYMISC2);
1288 val &= ~(PCIE_PHYMISC2_SERDES_CDR_MASK |
1289 PCIE_PHYMISC2_SERDES_TH_MASK);
1290 val |= 3 << PCIE_PHYMISC2_SERDES_CDR_SHIFT;
1291 val |= 3 << PCIE_PHYMISC2_SERDES_TH_SHIFT;
1292 CSR_WRITE_4(sc, ALC_PCIE_PHYMISC2, val);
1294 /* Disable ASPM L0S and L1. */
1295 cap = CSR_READ_2(sc, sc->alc_expcap + PCIER_LINK_CAP);
1296 if ((cap & PCIEM_LINK_CAP_ASPM) != 0) {
1297 ctl = CSR_READ_2(sc, sc->alc_expcap + PCIER_LINK_CTL);
1298 if ((ctl & PCIEM_LINK_CTL_RCB) != 0)
1299 sc->alc_rcb = DMA_CFG_RCB_128;
1301 device_printf(sc->alc_dev, "RCB %u bytes\n",
1302 sc->alc_rcb == DMA_CFG_RCB_64 ? 64 : 128);
1303 state = ctl & PCIEM_LINK_CTL_ASPMC;
1304 if (state & PCIEM_LINK_CTL_ASPMC_L0S)
1305 sc->alc_flags |= ALC_FLAG_L0S;
1306 if (state & PCIEM_LINK_CTL_ASPMC_L1)
1307 sc->alc_flags |= ALC_FLAG_L1S;
1309 device_printf(sc->alc_dev, "ASPM %s %s\n",
1311 state == 0 ? "disabled" : "enabled");
1312 alc_disable_l0s_l1(sc);
1315 device_printf(sc->alc_dev,
1316 "no ASPM support\n");
1319 val = CSR_READ_4(sc, ALC_PDLL_TRNS1);
1320 val &= ~PDLL_TRNS1_D3PLLOFF_ENB;
1321 CSR_WRITE_4(sc, ALC_PDLL_TRNS1, val);
1322 val = CSR_READ_4(sc, ALC_MASTER_CFG);
1323 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1 &&
1324 (sc->alc_rev & 0x01) != 0) {
1325 if ((val & MASTER_WAKEN_25M) == 0 ||
1326 (val & MASTER_CLK_SEL_DIS) == 0) {
1327 val |= MASTER_WAKEN_25M | MASTER_CLK_SEL_DIS;
1328 CSR_WRITE_4(sc, ALC_MASTER_CFG, val);
1331 if ((val & MASTER_WAKEN_25M) == 0 ||
1332 (val & MASTER_CLK_SEL_DIS) != 0) {
1333 val |= MASTER_WAKEN_25M;
1334 val &= ~MASTER_CLK_SEL_DIS;
1335 CSR_WRITE_4(sc, ALC_MASTER_CFG, val);
1339 alc_aspm(sc, 1, IFM_UNKNOWN);
1343 alc_config_msi(struct alc_softc *sc)
1347 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
1349 * It seems interrupt moderation is controlled by
1350 * ALC_MSI_RETRANS_TIMER register if MSI/MSIX is active.
1351 * Driver uses RX interrupt moderation parameter to
1352 * program ALC_MSI_RETRANS_TIMER register.
1354 ctl = CSR_READ_4(sc, ALC_MSI_RETRANS_TIMER);
1355 ctl &= ~MSI_RETRANS_TIMER_MASK;
1356 ctl &= ~MSI_RETRANS_MASK_SEL_LINE;
1357 mod = ALC_USECS(sc->alc_int_rx_mod);
1361 if ((sc->alc_flags & ALC_FLAG_MSIX) != 0)
1362 CSR_WRITE_4(sc, ALC_MSI_RETRANS_TIMER, ctl |
1363 MSI_RETRANS_MASK_SEL_STD);
1364 else if ((sc->alc_flags & ALC_FLAG_MSI) != 0)
1365 CSR_WRITE_4(sc, ALC_MSI_RETRANS_TIMER, ctl |
1366 MSI_RETRANS_MASK_SEL_LINE);
1368 CSR_WRITE_4(sc, ALC_MSI_RETRANS_TIMER, 0);
1373 alc_attach(device_t dev)
1375 struct alc_softc *sc;
1377 int base, error, i, msic, msixc;
1381 sc = device_get_softc(dev);
1383 sc->alc_rev = pci_get_revid(dev);
1385 mtx_init(&sc->alc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
1387 callout_init_mtx(&sc->alc_tick_ch, &sc->alc_mtx, 0);
1388 TASK_INIT(&sc->alc_int_task, 0, alc_int_task, sc);
1389 sc->alc_ident = alc_find_ident(dev);
1391 /* Map the device. */
1392 pci_enable_busmaster(dev);
1393 sc->alc_res_spec = alc_res_spec_mem;
1394 sc->alc_irq_spec = alc_irq_spec_legacy;
1395 error = bus_alloc_resources(dev, sc->alc_res_spec, sc->alc_res);
1397 device_printf(dev, "cannot allocate memory resources.\n");
1401 /* Set PHY address. */
1402 sc->alc_phyaddr = ALC_PHY_ADDR;
1405 * One odd thing is AR8132 uses the same PHY hardware(F1
1406 * gigabit PHY) of AR8131. So atphy(4) of AR8132 reports
1407 * the PHY supports 1000Mbps but that's not true. The PHY
1408 * used in AR8132 can't establish gigabit link even if it
1409 * shows the same PHY model/revision number of AR8131.
1411 switch (sc->alc_ident->deviceid) {
1412 case DEVICEID_ATHEROS_E2200:
1413 case DEVICEID_ATHEROS_E2400:
1414 case DEVICEID_ATHEROS_E2500:
1415 sc->alc_flags |= ALC_FLAG_E2X00;
1417 case DEVICEID_ATHEROS_AR8161:
1418 if (pci_get_subvendor(dev) == VENDORID_ATHEROS &&
1419 pci_get_subdevice(dev) == 0x0091 && sc->alc_rev == 0)
1420 sc->alc_flags |= ALC_FLAG_LINK_WAR;
1422 case DEVICEID_ATHEROS_AR8171:
1423 sc->alc_flags |= ALC_FLAG_AR816X_FAMILY;
1425 case DEVICEID_ATHEROS_AR8162:
1426 case DEVICEID_ATHEROS_AR8172:
1427 sc->alc_flags |= ALC_FLAG_FASTETHER | ALC_FLAG_AR816X_FAMILY;
1429 case DEVICEID_ATHEROS_AR8152_B:
1430 case DEVICEID_ATHEROS_AR8152_B2:
1431 sc->alc_flags |= ALC_FLAG_APS;
1433 case DEVICEID_ATHEROS_AR8132:
1434 sc->alc_flags |= ALC_FLAG_FASTETHER;
1436 case DEVICEID_ATHEROS_AR8151:
1437 case DEVICEID_ATHEROS_AR8151_V2:
1438 sc->alc_flags |= ALC_FLAG_APS;
1443 sc->alc_flags |= ALC_FLAG_JUMBO;
1446 * It seems that AR813x/AR815x has silicon bug for SMB. In
1447 * addition, Atheros said that enabling SMB wouldn't improve
1448 * performance. However I think it's bad to access lots of
1449 * registers to extract MAC statistics.
1451 sc->alc_flags |= ALC_FLAG_SMB_BUG;
1453 * Don't use Tx CMB. It is known to have silicon bug.
1455 sc->alc_flags |= ALC_FLAG_CMB_BUG;
1456 sc->alc_chip_rev = CSR_READ_4(sc, ALC_MASTER_CFG) >>
1457 MASTER_CHIP_REV_SHIFT;
1459 device_printf(dev, "PCI device revision : 0x%04x\n",
1461 device_printf(dev, "Chip id/revision : 0x%04x\n",
1463 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
1464 device_printf(dev, "AR816x revision : 0x%x\n",
1465 AR816X_REV(sc->alc_rev));
1467 device_printf(dev, "%u Tx FIFO, %u Rx FIFO\n",
1468 CSR_READ_4(sc, ALC_SRAM_TX_FIFO_LEN) * 8,
1469 CSR_READ_4(sc, ALC_SRAM_RX_FIFO_LEN) * 8);
1471 /* Initialize DMA parameters. */
1472 sc->alc_dma_rd_burst = 0;
1473 sc->alc_dma_wr_burst = 0;
1474 sc->alc_rcb = DMA_CFG_RCB_64;
1475 if (pci_find_cap(dev, PCIY_EXPRESS, &base) == 0) {
1476 sc->alc_flags |= ALC_FLAG_PCIE;
1477 sc->alc_expcap = base;
1478 burst = CSR_READ_2(sc, base + PCIER_DEVICE_CTL);
1479 sc->alc_dma_rd_burst =
1480 (burst & PCIEM_CTL_MAX_READ_REQUEST) >> 12;
1481 sc->alc_dma_wr_burst = (burst & PCIEM_CTL_MAX_PAYLOAD) >> 5;
1483 device_printf(dev, "Read request size : %u bytes.\n",
1484 alc_dma_burst[sc->alc_dma_rd_burst]);
1485 device_printf(dev, "TLP payload size : %u bytes.\n",
1486 alc_dma_burst[sc->alc_dma_wr_burst]);
1488 if (alc_dma_burst[sc->alc_dma_rd_burst] > 1024)
1489 sc->alc_dma_rd_burst = 3;
1490 if (alc_dma_burst[sc->alc_dma_wr_burst] > 1024)
1491 sc->alc_dma_wr_burst = 3;
1493 * Force maximum payload size to 128 bytes for
1494 * E2200/E2400/E2500.
1495 * Otherwise it triggers DMA write error.
1497 if ((sc->alc_flags & ALC_FLAG_E2X00) != 0)
1498 sc->alc_dma_wr_burst = 0;
1505 /* Reset the ethernet controller. */
1509 /* Allocate IRQ resources. */
1510 msixc = pci_msix_count(dev);
1511 msic = pci_msi_count(dev);
1513 device_printf(dev, "MSIX count : %d\n", msixc);
1514 device_printf(dev, "MSI count : %d\n", msic);
1521 * Prefer MSIX over MSI.
1522 * AR816x controller has a silicon bug that MSI interrupt
1523 * does not assert if PCIM_CMD_INTxDIS bit of command
1524 * register is set. pci(4) was taught to handle that case.
1526 if (msix_disable == 0 || msi_disable == 0) {
1527 if (msix_disable == 0 && msixc > 0 &&
1528 pci_alloc_msix(dev, &msixc) == 0) {
1531 "Using %d MSIX message(s).\n", msixc);
1532 sc->alc_flags |= ALC_FLAG_MSIX;
1533 sc->alc_irq_spec = alc_irq_spec_msix;
1535 pci_release_msi(dev);
1537 if (msi_disable == 0 && (sc->alc_flags & ALC_FLAG_MSIX) == 0 &&
1538 msic > 0 && pci_alloc_msi(dev, &msic) == 0) {
1541 "Using %d MSI message(s).\n", msic);
1542 sc->alc_flags |= ALC_FLAG_MSI;
1543 sc->alc_irq_spec = alc_irq_spec_msi;
1545 pci_release_msi(dev);
1549 error = bus_alloc_resources(dev, sc->alc_irq_spec, sc->alc_irq);
1551 device_printf(dev, "cannot allocate IRQ resources.\n");
1555 /* Create device sysctl node. */
1556 alc_sysctl_node(sc);
1558 if ((error = alc_dma_alloc(sc)) != 0)
1561 /* Load station address. */
1562 alc_get_macaddr(sc);
1564 ifp = sc->alc_ifp = if_alloc(IFT_ETHER);
1566 device_printf(dev, "cannot allocate ifnet structure.\n");
1572 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
1573 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
1574 ifp->if_ioctl = alc_ioctl;
1575 ifp->if_start = alc_start;
1576 ifp->if_init = alc_init;
1577 ifp->if_snd.ifq_drv_maxlen = ALC_TX_RING_CNT - 1;
1578 IFQ_SET_MAXLEN(&ifp->if_snd, ifp->if_snd.ifq_drv_maxlen);
1579 IFQ_SET_READY(&ifp->if_snd);
1580 ifp->if_capabilities = IFCAP_TXCSUM | IFCAP_TSO4;
1581 ifp->if_hwassist = ALC_CSUM_FEATURES | CSUM_TSO;
1582 if (pci_find_cap(dev, PCIY_PMG, &base) == 0) {
1583 ifp->if_capabilities |= IFCAP_WOL_MAGIC | IFCAP_WOL_MCAST;
1584 sc->alc_flags |= ALC_FLAG_PM;
1585 sc->alc_pmcap = base;
1587 ifp->if_capenable = ifp->if_capabilities;
1589 /* Set up MII bus. */
1590 error = mii_attach(dev, &sc->alc_miibus, ifp, alc_mediachange,
1591 alc_mediastatus, BMSR_DEFCAPMASK, sc->alc_phyaddr, MII_OFFSET_ANY,
1594 device_printf(dev, "attaching PHYs failed\n");
1598 ether_ifattach(ifp, sc->alc_eaddr);
1600 /* VLAN capability setup. */
1601 ifp->if_capabilities |= IFCAP_VLAN_MTU | IFCAP_VLAN_HWTAGGING |
1602 IFCAP_VLAN_HWCSUM | IFCAP_VLAN_HWTSO;
1603 ifp->if_capenable = ifp->if_capabilities;
1606 * It seems enabling Tx checksum offloading makes more trouble.
1607 * Sometimes the controller does not receive any frames when
1608 * Tx checksum offloading is enabled. I'm not sure whether this
1609 * is a bug in Tx checksum offloading logic or I got broken
1610 * sample boards. To safety, don't enable Tx checksum offloading
1611 * by default but give chance to users to toggle it if they know
1612 * their controllers work without problems.
1613 * Fortunately, Tx checksum offloading for AR816x family
1616 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
1617 ifp->if_capenable &= ~IFCAP_TXCSUM;
1618 ifp->if_hwassist &= ~ALC_CSUM_FEATURES;
1621 /* Tell the upper layer(s) we support long frames. */
1622 ifp->if_hdrlen = sizeof(struct ether_vlan_header);
1624 /* Create local taskq. */
1625 sc->alc_tq = taskqueue_create_fast("alc_taskq", M_WAITOK,
1626 taskqueue_thread_enqueue, &sc->alc_tq);
1627 if (sc->alc_tq == NULL) {
1628 device_printf(dev, "could not create taskqueue.\n");
1629 ether_ifdetach(ifp);
1633 taskqueue_start_threads(&sc->alc_tq, 1, PI_NET, "%s taskq",
1634 device_get_nameunit(sc->alc_dev));
1637 if ((sc->alc_flags & ALC_FLAG_MSIX) != 0)
1638 msic = ALC_MSIX_MESSAGES;
1639 else if ((sc->alc_flags & ALC_FLAG_MSI) != 0)
1640 msic = ALC_MSI_MESSAGES;
1643 for (i = 0; i < msic; i++) {
1644 error = bus_setup_intr(dev, sc->alc_irq[i],
1645 INTR_TYPE_NET | INTR_MPSAFE, alc_intr, NULL, sc,
1646 &sc->alc_intrhand[i]);
1651 device_printf(dev, "could not set up interrupt handler.\n");
1652 taskqueue_free(sc->alc_tq);
1654 ether_ifdetach(ifp);
1658 /* Attach driver netdump methods. */
1659 NETDUMP_SET(ifp, alc);
1669 alc_detach(device_t dev)
1671 struct alc_softc *sc;
1675 sc = device_get_softc(dev);
1678 if (device_is_attached(dev)) {
1679 ether_ifdetach(ifp);
1683 callout_drain(&sc->alc_tick_ch);
1684 taskqueue_drain(sc->alc_tq, &sc->alc_int_task);
1687 if (sc->alc_tq != NULL) {
1688 taskqueue_drain(sc->alc_tq, &sc->alc_int_task);
1689 taskqueue_free(sc->alc_tq);
1693 if (sc->alc_miibus != NULL) {
1694 device_delete_child(dev, sc->alc_miibus);
1695 sc->alc_miibus = NULL;
1697 bus_generic_detach(dev);
1705 if ((sc->alc_flags & ALC_FLAG_MSIX) != 0)
1706 msic = ALC_MSIX_MESSAGES;
1707 else if ((sc->alc_flags & ALC_FLAG_MSI) != 0)
1708 msic = ALC_MSI_MESSAGES;
1711 for (i = 0; i < msic; i++) {
1712 if (sc->alc_intrhand[i] != NULL) {
1713 bus_teardown_intr(dev, sc->alc_irq[i],
1714 sc->alc_intrhand[i]);
1715 sc->alc_intrhand[i] = NULL;
1718 if (sc->alc_res[0] != NULL)
1720 bus_release_resources(dev, sc->alc_irq_spec, sc->alc_irq);
1721 if ((sc->alc_flags & (ALC_FLAG_MSI | ALC_FLAG_MSIX)) != 0)
1722 pci_release_msi(dev);
1723 bus_release_resources(dev, sc->alc_res_spec, sc->alc_res);
1724 mtx_destroy(&sc->alc_mtx);
1729 #define ALC_SYSCTL_STAT_ADD32(c, h, n, p, d) \
1730 SYSCTL_ADD_UINT(c, h, OID_AUTO, n, CTLFLAG_RD, p, 0, d)
1731 #define ALC_SYSCTL_STAT_ADD64(c, h, n, p, d) \
1732 SYSCTL_ADD_UQUAD(c, h, OID_AUTO, n, CTLFLAG_RD, p, d)
1735 alc_sysctl_node(struct alc_softc *sc)
1737 struct sysctl_ctx_list *ctx;
1738 struct sysctl_oid_list *child, *parent;
1739 struct sysctl_oid *tree;
1740 struct alc_hw_stats *stats;
1743 stats = &sc->alc_stats;
1744 ctx = device_get_sysctl_ctx(sc->alc_dev);
1745 child = SYSCTL_CHILDREN(device_get_sysctl_tree(sc->alc_dev));
1747 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "int_rx_mod",
1748 CTLTYPE_INT | CTLFLAG_RW, &sc->alc_int_rx_mod, 0,
1749 sysctl_hw_alc_int_mod, "I", "alc Rx interrupt moderation");
1750 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "int_tx_mod",
1751 CTLTYPE_INT | CTLFLAG_RW, &sc->alc_int_tx_mod, 0,
1752 sysctl_hw_alc_int_mod, "I", "alc Tx interrupt moderation");
1753 /* Pull in device tunables. */
1754 sc->alc_int_rx_mod = ALC_IM_RX_TIMER_DEFAULT;
1755 error = resource_int_value(device_get_name(sc->alc_dev),
1756 device_get_unit(sc->alc_dev), "int_rx_mod", &sc->alc_int_rx_mod);
1758 if (sc->alc_int_rx_mod < ALC_IM_TIMER_MIN ||
1759 sc->alc_int_rx_mod > ALC_IM_TIMER_MAX) {
1760 device_printf(sc->alc_dev, "int_rx_mod value out of "
1761 "range; using default: %d\n",
1762 ALC_IM_RX_TIMER_DEFAULT);
1763 sc->alc_int_rx_mod = ALC_IM_RX_TIMER_DEFAULT;
1766 sc->alc_int_tx_mod = ALC_IM_TX_TIMER_DEFAULT;
1767 error = resource_int_value(device_get_name(sc->alc_dev),
1768 device_get_unit(sc->alc_dev), "int_tx_mod", &sc->alc_int_tx_mod);
1770 if (sc->alc_int_tx_mod < ALC_IM_TIMER_MIN ||
1771 sc->alc_int_tx_mod > ALC_IM_TIMER_MAX) {
1772 device_printf(sc->alc_dev, "int_tx_mod value out of "
1773 "range; using default: %d\n",
1774 ALC_IM_TX_TIMER_DEFAULT);
1775 sc->alc_int_tx_mod = ALC_IM_TX_TIMER_DEFAULT;
1778 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "process_limit",
1779 CTLTYPE_INT | CTLFLAG_RW, &sc->alc_process_limit, 0,
1780 sysctl_hw_alc_proc_limit, "I",
1781 "max number of Rx events to process");
1782 /* Pull in device tunables. */
1783 sc->alc_process_limit = ALC_PROC_DEFAULT;
1784 error = resource_int_value(device_get_name(sc->alc_dev),
1785 device_get_unit(sc->alc_dev), "process_limit",
1786 &sc->alc_process_limit);
1788 if (sc->alc_process_limit < ALC_PROC_MIN ||
1789 sc->alc_process_limit > ALC_PROC_MAX) {
1790 device_printf(sc->alc_dev,
1791 "process_limit value out of range; "
1792 "using default: %d\n", ALC_PROC_DEFAULT);
1793 sc->alc_process_limit = ALC_PROC_DEFAULT;
1797 tree = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "stats", CTLFLAG_RD,
1798 NULL, "ALC statistics");
1799 parent = SYSCTL_CHILDREN(tree);
1801 /* Rx statistics. */
1802 tree = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "rx", CTLFLAG_RD,
1803 NULL, "Rx MAC statistics");
1804 child = SYSCTL_CHILDREN(tree);
1805 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_frames",
1806 &stats->rx_frames, "Good frames");
1807 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_bcast_frames",
1808 &stats->rx_bcast_frames, "Good broadcast frames");
1809 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_mcast_frames",
1810 &stats->rx_mcast_frames, "Good multicast frames");
1811 ALC_SYSCTL_STAT_ADD32(ctx, child, "pause_frames",
1812 &stats->rx_pause_frames, "Pause control frames");
1813 ALC_SYSCTL_STAT_ADD32(ctx, child, "control_frames",
1814 &stats->rx_control_frames, "Control frames");
1815 ALC_SYSCTL_STAT_ADD32(ctx, child, "crc_errs",
1816 &stats->rx_crcerrs, "CRC errors");
1817 ALC_SYSCTL_STAT_ADD32(ctx, child, "len_errs",
1818 &stats->rx_lenerrs, "Frames with length mismatched");
1819 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_octets",
1820 &stats->rx_bytes, "Good octets");
1821 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_bcast_octets",
1822 &stats->rx_bcast_bytes, "Good broadcast octets");
1823 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_mcast_octets",
1824 &stats->rx_mcast_bytes, "Good multicast octets");
1825 ALC_SYSCTL_STAT_ADD32(ctx, child, "runts",
1826 &stats->rx_runts, "Too short frames");
1827 ALC_SYSCTL_STAT_ADD32(ctx, child, "fragments",
1828 &stats->rx_fragments, "Fragmented frames");
1829 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_64",
1830 &stats->rx_pkts_64, "64 bytes frames");
1831 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_65_127",
1832 &stats->rx_pkts_65_127, "65 to 127 bytes frames");
1833 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_128_255",
1834 &stats->rx_pkts_128_255, "128 to 255 bytes frames");
1835 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_256_511",
1836 &stats->rx_pkts_256_511, "256 to 511 bytes frames");
1837 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_512_1023",
1838 &stats->rx_pkts_512_1023, "512 to 1023 bytes frames");
1839 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_1024_1518",
1840 &stats->rx_pkts_1024_1518, "1024 to 1518 bytes frames");
1841 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_1519_max",
1842 &stats->rx_pkts_1519_max, "1519 to max frames");
1843 ALC_SYSCTL_STAT_ADD32(ctx, child, "trunc_errs",
1844 &stats->rx_pkts_truncated, "Truncated frames due to MTU size");
1845 ALC_SYSCTL_STAT_ADD32(ctx, child, "fifo_oflows",
1846 &stats->rx_fifo_oflows, "FIFO overflows");
1847 ALC_SYSCTL_STAT_ADD32(ctx, child, "rrs_errs",
1848 &stats->rx_rrs_errs, "Return status write-back errors");
1849 ALC_SYSCTL_STAT_ADD32(ctx, child, "align_errs",
1850 &stats->rx_alignerrs, "Alignment errors");
1851 ALC_SYSCTL_STAT_ADD32(ctx, child, "filtered",
1852 &stats->rx_pkts_filtered,
1853 "Frames dropped due to address filtering");
1855 /* Tx statistics. */
1856 tree = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "tx", CTLFLAG_RD,
1857 NULL, "Tx MAC statistics");
1858 child = SYSCTL_CHILDREN(tree);
1859 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_frames",
1860 &stats->tx_frames, "Good frames");
1861 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_bcast_frames",
1862 &stats->tx_bcast_frames, "Good broadcast frames");
1863 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_mcast_frames",
1864 &stats->tx_mcast_frames, "Good multicast frames");
1865 ALC_SYSCTL_STAT_ADD32(ctx, child, "pause_frames",
1866 &stats->tx_pause_frames, "Pause control frames");
1867 ALC_SYSCTL_STAT_ADD32(ctx, child, "control_frames",
1868 &stats->tx_control_frames, "Control frames");
1869 ALC_SYSCTL_STAT_ADD32(ctx, child, "excess_defers",
1870 &stats->tx_excess_defer, "Frames with excessive derferrals");
1871 ALC_SYSCTL_STAT_ADD32(ctx, child, "defers",
1872 &stats->tx_excess_defer, "Frames with derferrals");
1873 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_octets",
1874 &stats->tx_bytes, "Good octets");
1875 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_bcast_octets",
1876 &stats->tx_bcast_bytes, "Good broadcast octets");
1877 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_mcast_octets",
1878 &stats->tx_mcast_bytes, "Good multicast octets");
1879 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_64",
1880 &stats->tx_pkts_64, "64 bytes frames");
1881 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_65_127",
1882 &stats->tx_pkts_65_127, "65 to 127 bytes frames");
1883 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_128_255",
1884 &stats->tx_pkts_128_255, "128 to 255 bytes frames");
1885 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_256_511",
1886 &stats->tx_pkts_256_511, "256 to 511 bytes frames");
1887 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_512_1023",
1888 &stats->tx_pkts_512_1023, "512 to 1023 bytes frames");
1889 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_1024_1518",
1890 &stats->tx_pkts_1024_1518, "1024 to 1518 bytes frames");
1891 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_1519_max",
1892 &stats->tx_pkts_1519_max, "1519 to max frames");
1893 ALC_SYSCTL_STAT_ADD32(ctx, child, "single_colls",
1894 &stats->tx_single_colls, "Single collisions");
1895 ALC_SYSCTL_STAT_ADD32(ctx, child, "multi_colls",
1896 &stats->tx_multi_colls, "Multiple collisions");
1897 ALC_SYSCTL_STAT_ADD32(ctx, child, "late_colls",
1898 &stats->tx_late_colls, "Late collisions");
1899 ALC_SYSCTL_STAT_ADD32(ctx, child, "excess_colls",
1900 &stats->tx_excess_colls, "Excessive collisions");
1901 ALC_SYSCTL_STAT_ADD32(ctx, child, "underruns",
1902 &stats->tx_underrun, "FIFO underruns");
1903 ALC_SYSCTL_STAT_ADD32(ctx, child, "desc_underruns",
1904 &stats->tx_desc_underrun, "Descriptor write-back errors");
1905 ALC_SYSCTL_STAT_ADD32(ctx, child, "len_errs",
1906 &stats->tx_lenerrs, "Frames with length mismatched");
1907 ALC_SYSCTL_STAT_ADD32(ctx, child, "trunc_errs",
1908 &stats->tx_pkts_truncated, "Truncated frames due to MTU size");
1911 #undef ALC_SYSCTL_STAT_ADD32
1912 #undef ALC_SYSCTL_STAT_ADD64
1914 struct alc_dmamap_arg {
1915 bus_addr_t alc_busaddr;
1919 alc_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
1921 struct alc_dmamap_arg *ctx;
1926 KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs));
1928 ctx = (struct alc_dmamap_arg *)arg;
1929 ctx->alc_busaddr = segs[0].ds_addr;
1933 * Normal and high Tx descriptors shares single Tx high address.
1934 * Four Rx descriptor/return rings and CMB shares the same Rx
1938 alc_check_boundary(struct alc_softc *sc)
1940 bus_addr_t cmb_end, rx_ring_end, rr_ring_end, tx_ring_end;
1942 rx_ring_end = sc->alc_rdata.alc_rx_ring_paddr + ALC_RX_RING_SZ;
1943 rr_ring_end = sc->alc_rdata.alc_rr_ring_paddr + ALC_RR_RING_SZ;
1944 cmb_end = sc->alc_rdata.alc_cmb_paddr + ALC_CMB_SZ;
1945 tx_ring_end = sc->alc_rdata.alc_tx_ring_paddr + ALC_TX_RING_SZ;
1947 /* 4GB boundary crossing is not allowed. */
1948 if ((ALC_ADDR_HI(rx_ring_end) !=
1949 ALC_ADDR_HI(sc->alc_rdata.alc_rx_ring_paddr)) ||
1950 (ALC_ADDR_HI(rr_ring_end) !=
1951 ALC_ADDR_HI(sc->alc_rdata.alc_rr_ring_paddr)) ||
1952 (ALC_ADDR_HI(cmb_end) !=
1953 ALC_ADDR_HI(sc->alc_rdata.alc_cmb_paddr)) ||
1954 (ALC_ADDR_HI(tx_ring_end) !=
1955 ALC_ADDR_HI(sc->alc_rdata.alc_tx_ring_paddr)))
1958 * Make sure Rx return descriptor/Rx descriptor/CMB use
1959 * the same high address.
1961 if ((ALC_ADDR_HI(rx_ring_end) != ALC_ADDR_HI(rr_ring_end)) ||
1962 (ALC_ADDR_HI(rx_ring_end) != ALC_ADDR_HI(cmb_end)))
1969 alc_dma_alloc(struct alc_softc *sc)
1971 struct alc_txdesc *txd;
1972 struct alc_rxdesc *rxd;
1974 struct alc_dmamap_arg ctx;
1977 lowaddr = BUS_SPACE_MAXADDR;
1979 /* Create parent DMA tag. */
1980 error = bus_dma_tag_create(
1981 bus_get_dma_tag(sc->alc_dev), /* parent */
1982 1, 0, /* alignment, boundary */
1983 lowaddr, /* lowaddr */
1984 BUS_SPACE_MAXADDR, /* highaddr */
1985 NULL, NULL, /* filter, filterarg */
1986 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
1988 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
1990 NULL, NULL, /* lockfunc, lockarg */
1991 &sc->alc_cdata.alc_parent_tag);
1993 device_printf(sc->alc_dev,
1994 "could not create parent DMA tag.\n");
1998 /* Create DMA tag for Tx descriptor ring. */
1999 error = bus_dma_tag_create(
2000 sc->alc_cdata.alc_parent_tag, /* parent */
2001 ALC_TX_RING_ALIGN, 0, /* alignment, boundary */
2002 BUS_SPACE_MAXADDR, /* lowaddr */
2003 BUS_SPACE_MAXADDR, /* highaddr */
2004 NULL, NULL, /* filter, filterarg */
2005 ALC_TX_RING_SZ, /* maxsize */
2007 ALC_TX_RING_SZ, /* maxsegsize */
2009 NULL, NULL, /* lockfunc, lockarg */
2010 &sc->alc_cdata.alc_tx_ring_tag);
2012 device_printf(sc->alc_dev,
2013 "could not create Tx ring DMA tag.\n");
2017 /* Create DMA tag for Rx free descriptor ring. */
2018 error = bus_dma_tag_create(
2019 sc->alc_cdata.alc_parent_tag, /* parent */
2020 ALC_RX_RING_ALIGN, 0, /* alignment, boundary */
2021 BUS_SPACE_MAXADDR, /* lowaddr */
2022 BUS_SPACE_MAXADDR, /* highaddr */
2023 NULL, NULL, /* filter, filterarg */
2024 ALC_RX_RING_SZ, /* maxsize */
2026 ALC_RX_RING_SZ, /* maxsegsize */
2028 NULL, NULL, /* lockfunc, lockarg */
2029 &sc->alc_cdata.alc_rx_ring_tag);
2031 device_printf(sc->alc_dev,
2032 "could not create Rx ring DMA tag.\n");
2035 /* Create DMA tag for Rx return descriptor ring. */
2036 error = bus_dma_tag_create(
2037 sc->alc_cdata.alc_parent_tag, /* parent */
2038 ALC_RR_RING_ALIGN, 0, /* alignment, boundary */
2039 BUS_SPACE_MAXADDR, /* lowaddr */
2040 BUS_SPACE_MAXADDR, /* highaddr */
2041 NULL, NULL, /* filter, filterarg */
2042 ALC_RR_RING_SZ, /* maxsize */
2044 ALC_RR_RING_SZ, /* maxsegsize */
2046 NULL, NULL, /* lockfunc, lockarg */
2047 &sc->alc_cdata.alc_rr_ring_tag);
2049 device_printf(sc->alc_dev,
2050 "could not create Rx return ring DMA tag.\n");
2054 /* Create DMA tag for coalescing message block. */
2055 error = bus_dma_tag_create(
2056 sc->alc_cdata.alc_parent_tag, /* parent */
2057 ALC_CMB_ALIGN, 0, /* alignment, boundary */
2058 BUS_SPACE_MAXADDR, /* lowaddr */
2059 BUS_SPACE_MAXADDR, /* highaddr */
2060 NULL, NULL, /* filter, filterarg */
2061 ALC_CMB_SZ, /* maxsize */
2063 ALC_CMB_SZ, /* maxsegsize */
2065 NULL, NULL, /* lockfunc, lockarg */
2066 &sc->alc_cdata.alc_cmb_tag);
2068 device_printf(sc->alc_dev,
2069 "could not create CMB DMA tag.\n");
2072 /* Create DMA tag for status message block. */
2073 error = bus_dma_tag_create(
2074 sc->alc_cdata.alc_parent_tag, /* parent */
2075 ALC_SMB_ALIGN, 0, /* alignment, boundary */
2076 BUS_SPACE_MAXADDR, /* lowaddr */
2077 BUS_SPACE_MAXADDR, /* highaddr */
2078 NULL, NULL, /* filter, filterarg */
2079 ALC_SMB_SZ, /* maxsize */
2081 ALC_SMB_SZ, /* maxsegsize */
2083 NULL, NULL, /* lockfunc, lockarg */
2084 &sc->alc_cdata.alc_smb_tag);
2086 device_printf(sc->alc_dev,
2087 "could not create SMB DMA tag.\n");
2091 /* Allocate DMA'able memory and load the DMA map for Tx ring. */
2092 error = bus_dmamem_alloc(sc->alc_cdata.alc_tx_ring_tag,
2093 (void **)&sc->alc_rdata.alc_tx_ring,
2094 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
2095 &sc->alc_cdata.alc_tx_ring_map);
2097 device_printf(sc->alc_dev,
2098 "could not allocate DMA'able memory for Tx ring.\n");
2101 ctx.alc_busaddr = 0;
2102 error = bus_dmamap_load(sc->alc_cdata.alc_tx_ring_tag,
2103 sc->alc_cdata.alc_tx_ring_map, sc->alc_rdata.alc_tx_ring,
2104 ALC_TX_RING_SZ, alc_dmamap_cb, &ctx, 0);
2105 if (error != 0 || ctx.alc_busaddr == 0) {
2106 device_printf(sc->alc_dev,
2107 "could not load DMA'able memory for Tx ring.\n");
2110 sc->alc_rdata.alc_tx_ring_paddr = ctx.alc_busaddr;
2112 /* Allocate DMA'able memory and load the DMA map for Rx ring. */
2113 error = bus_dmamem_alloc(sc->alc_cdata.alc_rx_ring_tag,
2114 (void **)&sc->alc_rdata.alc_rx_ring,
2115 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
2116 &sc->alc_cdata.alc_rx_ring_map);
2118 device_printf(sc->alc_dev,
2119 "could not allocate DMA'able memory for Rx ring.\n");
2122 ctx.alc_busaddr = 0;
2123 error = bus_dmamap_load(sc->alc_cdata.alc_rx_ring_tag,
2124 sc->alc_cdata.alc_rx_ring_map, sc->alc_rdata.alc_rx_ring,
2125 ALC_RX_RING_SZ, alc_dmamap_cb, &ctx, 0);
2126 if (error != 0 || ctx.alc_busaddr == 0) {
2127 device_printf(sc->alc_dev,
2128 "could not load DMA'able memory for Rx ring.\n");
2131 sc->alc_rdata.alc_rx_ring_paddr = ctx.alc_busaddr;
2133 /* Allocate DMA'able memory and load the DMA map for Rx return ring. */
2134 error = bus_dmamem_alloc(sc->alc_cdata.alc_rr_ring_tag,
2135 (void **)&sc->alc_rdata.alc_rr_ring,
2136 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
2137 &sc->alc_cdata.alc_rr_ring_map);
2139 device_printf(sc->alc_dev,
2140 "could not allocate DMA'able memory for Rx return ring.\n");
2143 ctx.alc_busaddr = 0;
2144 error = bus_dmamap_load(sc->alc_cdata.alc_rr_ring_tag,
2145 sc->alc_cdata.alc_rr_ring_map, sc->alc_rdata.alc_rr_ring,
2146 ALC_RR_RING_SZ, alc_dmamap_cb, &ctx, 0);
2147 if (error != 0 || ctx.alc_busaddr == 0) {
2148 device_printf(sc->alc_dev,
2149 "could not load DMA'able memory for Tx ring.\n");
2152 sc->alc_rdata.alc_rr_ring_paddr = ctx.alc_busaddr;
2154 /* Allocate DMA'able memory and load the DMA map for CMB. */
2155 error = bus_dmamem_alloc(sc->alc_cdata.alc_cmb_tag,
2156 (void **)&sc->alc_rdata.alc_cmb,
2157 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
2158 &sc->alc_cdata.alc_cmb_map);
2160 device_printf(sc->alc_dev,
2161 "could not allocate DMA'able memory for CMB.\n");
2164 ctx.alc_busaddr = 0;
2165 error = bus_dmamap_load(sc->alc_cdata.alc_cmb_tag,
2166 sc->alc_cdata.alc_cmb_map, sc->alc_rdata.alc_cmb,
2167 ALC_CMB_SZ, alc_dmamap_cb, &ctx, 0);
2168 if (error != 0 || ctx.alc_busaddr == 0) {
2169 device_printf(sc->alc_dev,
2170 "could not load DMA'able memory for CMB.\n");
2173 sc->alc_rdata.alc_cmb_paddr = ctx.alc_busaddr;
2175 /* Allocate DMA'able memory and load the DMA map for SMB. */
2176 error = bus_dmamem_alloc(sc->alc_cdata.alc_smb_tag,
2177 (void **)&sc->alc_rdata.alc_smb,
2178 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
2179 &sc->alc_cdata.alc_smb_map);
2181 device_printf(sc->alc_dev,
2182 "could not allocate DMA'able memory for SMB.\n");
2185 ctx.alc_busaddr = 0;
2186 error = bus_dmamap_load(sc->alc_cdata.alc_smb_tag,
2187 sc->alc_cdata.alc_smb_map, sc->alc_rdata.alc_smb,
2188 ALC_SMB_SZ, alc_dmamap_cb, &ctx, 0);
2189 if (error != 0 || ctx.alc_busaddr == 0) {
2190 device_printf(sc->alc_dev,
2191 "could not load DMA'able memory for CMB.\n");
2194 sc->alc_rdata.alc_smb_paddr = ctx.alc_busaddr;
2196 /* Make sure we've not crossed 4GB boundary. */
2197 if (lowaddr != BUS_SPACE_MAXADDR_32BIT &&
2198 (error = alc_check_boundary(sc)) != 0) {
2199 device_printf(sc->alc_dev, "4GB boundary crossed, "
2200 "switching to 32bit DMA addressing mode.\n");
2203 * Limit max allowable DMA address space to 32bit
2206 lowaddr = BUS_SPACE_MAXADDR_32BIT;
2211 * Create Tx buffer parent tag.
2212 * AR81[3567]x allows 64bit DMA addressing of Tx/Rx buffers
2213 * so it needs separate parent DMA tag as parent DMA address
2214 * space could be restricted to be within 32bit address space
2215 * by 4GB boundary crossing.
2217 error = bus_dma_tag_create(
2218 bus_get_dma_tag(sc->alc_dev), /* parent */
2219 1, 0, /* alignment, boundary */
2220 BUS_SPACE_MAXADDR, /* lowaddr */
2221 BUS_SPACE_MAXADDR, /* highaddr */
2222 NULL, NULL, /* filter, filterarg */
2223 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
2225 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
2227 NULL, NULL, /* lockfunc, lockarg */
2228 &sc->alc_cdata.alc_buffer_tag);
2230 device_printf(sc->alc_dev,
2231 "could not create parent buffer DMA tag.\n");
2235 /* Create DMA tag for Tx buffers. */
2236 error = bus_dma_tag_create(
2237 sc->alc_cdata.alc_buffer_tag, /* parent */
2238 1, 0, /* alignment, boundary */
2239 BUS_SPACE_MAXADDR, /* lowaddr */
2240 BUS_SPACE_MAXADDR, /* highaddr */
2241 NULL, NULL, /* filter, filterarg */
2242 ALC_TSO_MAXSIZE, /* maxsize */
2243 ALC_MAXTXSEGS, /* nsegments */
2244 ALC_TSO_MAXSEGSIZE, /* maxsegsize */
2246 NULL, NULL, /* lockfunc, lockarg */
2247 &sc->alc_cdata.alc_tx_tag);
2249 device_printf(sc->alc_dev, "could not create Tx DMA tag.\n");
2253 /* Create DMA tag for Rx buffers. */
2254 error = bus_dma_tag_create(
2255 sc->alc_cdata.alc_buffer_tag, /* parent */
2256 ALC_RX_BUF_ALIGN, 0, /* alignment, boundary */
2257 BUS_SPACE_MAXADDR, /* lowaddr */
2258 BUS_SPACE_MAXADDR, /* highaddr */
2259 NULL, NULL, /* filter, filterarg */
2260 MCLBYTES, /* maxsize */
2262 MCLBYTES, /* maxsegsize */
2264 NULL, NULL, /* lockfunc, lockarg */
2265 &sc->alc_cdata.alc_rx_tag);
2267 device_printf(sc->alc_dev, "could not create Rx DMA tag.\n");
2270 /* Create DMA maps for Tx buffers. */
2271 for (i = 0; i < ALC_TX_RING_CNT; i++) {
2272 txd = &sc->alc_cdata.alc_txdesc[i];
2274 txd->tx_dmamap = NULL;
2275 error = bus_dmamap_create(sc->alc_cdata.alc_tx_tag, 0,
2278 device_printf(sc->alc_dev,
2279 "could not create Tx dmamap.\n");
2283 /* Create DMA maps for Rx buffers. */
2284 if ((error = bus_dmamap_create(sc->alc_cdata.alc_rx_tag, 0,
2285 &sc->alc_cdata.alc_rx_sparemap)) != 0) {
2286 device_printf(sc->alc_dev,
2287 "could not create spare Rx dmamap.\n");
2290 for (i = 0; i < ALC_RX_RING_CNT; i++) {
2291 rxd = &sc->alc_cdata.alc_rxdesc[i];
2293 rxd->rx_dmamap = NULL;
2294 error = bus_dmamap_create(sc->alc_cdata.alc_rx_tag, 0,
2297 device_printf(sc->alc_dev,
2298 "could not create Rx dmamap.\n");
2308 alc_dma_free(struct alc_softc *sc)
2310 struct alc_txdesc *txd;
2311 struct alc_rxdesc *rxd;
2315 if (sc->alc_cdata.alc_tx_tag != NULL) {
2316 for (i = 0; i < ALC_TX_RING_CNT; i++) {
2317 txd = &sc->alc_cdata.alc_txdesc[i];
2318 if (txd->tx_dmamap != NULL) {
2319 bus_dmamap_destroy(sc->alc_cdata.alc_tx_tag,
2321 txd->tx_dmamap = NULL;
2324 bus_dma_tag_destroy(sc->alc_cdata.alc_tx_tag);
2325 sc->alc_cdata.alc_tx_tag = NULL;
2328 if (sc->alc_cdata.alc_rx_tag != NULL) {
2329 for (i = 0; i < ALC_RX_RING_CNT; i++) {
2330 rxd = &sc->alc_cdata.alc_rxdesc[i];
2331 if (rxd->rx_dmamap != NULL) {
2332 bus_dmamap_destroy(sc->alc_cdata.alc_rx_tag,
2334 rxd->rx_dmamap = NULL;
2337 if (sc->alc_cdata.alc_rx_sparemap != NULL) {
2338 bus_dmamap_destroy(sc->alc_cdata.alc_rx_tag,
2339 sc->alc_cdata.alc_rx_sparemap);
2340 sc->alc_cdata.alc_rx_sparemap = NULL;
2342 bus_dma_tag_destroy(sc->alc_cdata.alc_rx_tag);
2343 sc->alc_cdata.alc_rx_tag = NULL;
2345 /* Tx descriptor ring. */
2346 if (sc->alc_cdata.alc_tx_ring_tag != NULL) {
2347 if (sc->alc_rdata.alc_tx_ring_paddr != 0)
2348 bus_dmamap_unload(sc->alc_cdata.alc_tx_ring_tag,
2349 sc->alc_cdata.alc_tx_ring_map);
2350 if (sc->alc_rdata.alc_tx_ring != NULL)
2351 bus_dmamem_free(sc->alc_cdata.alc_tx_ring_tag,
2352 sc->alc_rdata.alc_tx_ring,
2353 sc->alc_cdata.alc_tx_ring_map);
2354 sc->alc_rdata.alc_tx_ring_paddr = 0;
2355 sc->alc_rdata.alc_tx_ring = NULL;
2356 bus_dma_tag_destroy(sc->alc_cdata.alc_tx_ring_tag);
2357 sc->alc_cdata.alc_tx_ring_tag = NULL;
2360 if (sc->alc_cdata.alc_rx_ring_tag != NULL) {
2361 if (sc->alc_rdata.alc_rx_ring_paddr != 0)
2362 bus_dmamap_unload(sc->alc_cdata.alc_rx_ring_tag,
2363 sc->alc_cdata.alc_rx_ring_map);
2364 if (sc->alc_rdata.alc_rx_ring != NULL)
2365 bus_dmamem_free(sc->alc_cdata.alc_rx_ring_tag,
2366 sc->alc_rdata.alc_rx_ring,
2367 sc->alc_cdata.alc_rx_ring_map);
2368 sc->alc_rdata.alc_rx_ring_paddr = 0;
2369 sc->alc_rdata.alc_rx_ring = NULL;
2370 bus_dma_tag_destroy(sc->alc_cdata.alc_rx_ring_tag);
2371 sc->alc_cdata.alc_rx_ring_tag = NULL;
2373 /* Rx return ring. */
2374 if (sc->alc_cdata.alc_rr_ring_tag != NULL) {
2375 if (sc->alc_rdata.alc_rr_ring_paddr != 0)
2376 bus_dmamap_unload(sc->alc_cdata.alc_rr_ring_tag,
2377 sc->alc_cdata.alc_rr_ring_map);
2378 if (sc->alc_rdata.alc_rr_ring != NULL)
2379 bus_dmamem_free(sc->alc_cdata.alc_rr_ring_tag,
2380 sc->alc_rdata.alc_rr_ring,
2381 sc->alc_cdata.alc_rr_ring_map);
2382 sc->alc_rdata.alc_rr_ring_paddr = 0;
2383 sc->alc_rdata.alc_rr_ring = NULL;
2384 bus_dma_tag_destroy(sc->alc_cdata.alc_rr_ring_tag);
2385 sc->alc_cdata.alc_rr_ring_tag = NULL;
2388 if (sc->alc_cdata.alc_cmb_tag != NULL) {
2389 if (sc->alc_rdata.alc_cmb_paddr != 0)
2390 bus_dmamap_unload(sc->alc_cdata.alc_cmb_tag,
2391 sc->alc_cdata.alc_cmb_map);
2392 if (sc->alc_rdata.alc_cmb != NULL)
2393 bus_dmamem_free(sc->alc_cdata.alc_cmb_tag,
2394 sc->alc_rdata.alc_cmb,
2395 sc->alc_cdata.alc_cmb_map);
2396 sc->alc_rdata.alc_cmb_paddr = 0;
2397 sc->alc_rdata.alc_cmb = NULL;
2398 bus_dma_tag_destroy(sc->alc_cdata.alc_cmb_tag);
2399 sc->alc_cdata.alc_cmb_tag = NULL;
2402 if (sc->alc_cdata.alc_smb_tag != NULL) {
2403 if (sc->alc_rdata.alc_smb_paddr != 0)
2404 bus_dmamap_unload(sc->alc_cdata.alc_smb_tag,
2405 sc->alc_cdata.alc_smb_map);
2406 if (sc->alc_rdata.alc_smb != NULL)
2407 bus_dmamem_free(sc->alc_cdata.alc_smb_tag,
2408 sc->alc_rdata.alc_smb,
2409 sc->alc_cdata.alc_smb_map);
2410 sc->alc_rdata.alc_smb_paddr = 0;
2411 sc->alc_rdata.alc_smb = NULL;
2412 bus_dma_tag_destroy(sc->alc_cdata.alc_smb_tag);
2413 sc->alc_cdata.alc_smb_tag = NULL;
2415 if (sc->alc_cdata.alc_buffer_tag != NULL) {
2416 bus_dma_tag_destroy(sc->alc_cdata.alc_buffer_tag);
2417 sc->alc_cdata.alc_buffer_tag = NULL;
2419 if (sc->alc_cdata.alc_parent_tag != NULL) {
2420 bus_dma_tag_destroy(sc->alc_cdata.alc_parent_tag);
2421 sc->alc_cdata.alc_parent_tag = NULL;
2426 alc_shutdown(device_t dev)
2429 return (alc_suspend(dev));
2433 * Note, this driver resets the link speed to 10/100Mbps by
2434 * restarting auto-negotiation in suspend/shutdown phase but we
2435 * don't know whether that auto-negotiation would succeed or not
2436 * as driver has no control after powering off/suspend operation.
2437 * If the renegotiation fail WOL may not work. Running at 1Gbps
2438 * will draw more power than 375mA at 3.3V which is specified in
2439 * PCI specification and that would result in complete
2440 * shutdowning power to ethernet controller.
2443 * Save current negotiated media speed/duplex/flow-control to
2444 * softc and restore the same link again after resuming. PHY
2445 * handling such as power down/resetting to 100Mbps may be better
2446 * handled in suspend method in phy driver.
2449 alc_setlinkspeed(struct alc_softc *sc)
2451 struct mii_data *mii;
2454 mii = device_get_softc(sc->alc_miibus);
2457 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) ==
2458 (IFM_ACTIVE | IFM_AVALID)) {
2459 switch IFM_SUBTYPE(mii->mii_media_active) {
2470 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, MII_100T2CR, 0);
2471 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
2472 MII_ANAR, ANAR_TX_FD | ANAR_TX | ANAR_10_FD | ANAR_10 | ANAR_CSMA);
2473 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
2474 MII_BMCR, BMCR_RESET | BMCR_AUTOEN | BMCR_STARTNEG);
2478 * Poll link state until alc(4) get a 10/100Mbps link.
2480 for (i = 0; i < MII_ANEGTICKS_GIGE; i++) {
2482 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID))
2483 == (IFM_ACTIVE | IFM_AVALID)) {
2484 switch (IFM_SUBTYPE(
2485 mii->mii_media_active)) {
2495 pause("alclnk", hz);
2498 if (i == MII_ANEGTICKS_GIGE)
2499 device_printf(sc->alc_dev,
2500 "establishing a link failed, WOL may not work!");
2503 * No link, force MAC to have 100Mbps, full-duplex link.
2504 * This is the last resort and may/may not work.
2506 mii->mii_media_status = IFM_AVALID | IFM_ACTIVE;
2507 mii->mii_media_active = IFM_ETHER | IFM_100_TX | IFM_FDX;
2512 alc_setwol(struct alc_softc *sc)
2515 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
2516 alc_setwol_816x(sc);
2518 alc_setwol_813x(sc);
2522 alc_setwol_813x(struct alc_softc *sc)
2528 ALC_LOCK_ASSERT(sc);
2530 alc_disable_l0s_l1(sc);
2532 if ((sc->alc_flags & ALC_FLAG_PM) == 0) {
2534 CSR_WRITE_4(sc, ALC_WOL_CFG, 0);
2535 reg = CSR_READ_4(sc, ALC_PCIE_PHYMISC);
2536 reg |= PCIE_PHYMISC_FORCE_RCV_DET;
2537 CSR_WRITE_4(sc, ALC_PCIE_PHYMISC, reg);
2538 /* Force PHY power down. */
2540 CSR_WRITE_4(sc, ALC_MASTER_CFG,
2541 CSR_READ_4(sc, ALC_MASTER_CFG) | MASTER_CLK_SEL_DIS);
2545 if ((ifp->if_capenable & IFCAP_WOL) != 0) {
2546 if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0)
2547 alc_setlinkspeed(sc);
2548 CSR_WRITE_4(sc, ALC_MASTER_CFG,
2549 CSR_READ_4(sc, ALC_MASTER_CFG) & ~MASTER_CLK_SEL_DIS);
2553 if ((ifp->if_capenable & IFCAP_WOL_MAGIC) != 0)
2554 pmcs |= WOL_CFG_MAGIC | WOL_CFG_MAGIC_ENB;
2555 CSR_WRITE_4(sc, ALC_WOL_CFG, pmcs);
2556 reg = CSR_READ_4(sc, ALC_MAC_CFG);
2557 reg &= ~(MAC_CFG_DBG | MAC_CFG_PROMISC | MAC_CFG_ALLMULTI |
2559 if ((ifp->if_capenable & IFCAP_WOL_MCAST) != 0)
2560 reg |= MAC_CFG_ALLMULTI | MAC_CFG_BCAST;
2561 if ((ifp->if_capenable & IFCAP_WOL) != 0)
2562 reg |= MAC_CFG_RX_ENB;
2563 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
2565 reg = CSR_READ_4(sc, ALC_PCIE_PHYMISC);
2566 reg |= PCIE_PHYMISC_FORCE_RCV_DET;
2567 CSR_WRITE_4(sc, ALC_PCIE_PHYMISC, reg);
2568 if ((ifp->if_capenable & IFCAP_WOL) == 0) {
2569 /* WOL disabled, PHY power down. */
2571 CSR_WRITE_4(sc, ALC_MASTER_CFG,
2572 CSR_READ_4(sc, ALC_MASTER_CFG) | MASTER_CLK_SEL_DIS);
2575 pmstat = pci_read_config(sc->alc_dev,
2576 sc->alc_pmcap + PCIR_POWER_STATUS, 2);
2577 pmstat &= ~(PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE);
2578 if ((ifp->if_capenable & IFCAP_WOL) != 0)
2579 pmstat |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE;
2580 pci_write_config(sc->alc_dev,
2581 sc->alc_pmcap + PCIR_POWER_STATUS, pmstat, 2);
2585 alc_setwol_816x(struct alc_softc *sc)
2588 uint32_t gphy, mac, master, pmcs, reg;
2591 ALC_LOCK_ASSERT(sc);
2594 master = CSR_READ_4(sc, ALC_MASTER_CFG);
2595 master &= ~MASTER_CLK_SEL_DIS;
2596 gphy = CSR_READ_4(sc, ALC_GPHY_CFG);
2597 gphy &= ~(GPHY_CFG_EXT_RESET | GPHY_CFG_LED_MODE | GPHY_CFG_100AB_ENB |
2598 GPHY_CFG_PHY_PLL_ON);
2599 gphy |= GPHY_CFG_HIB_EN | GPHY_CFG_HIB_PULSE | GPHY_CFG_SEL_ANA_RESET;
2600 if ((sc->alc_flags & ALC_FLAG_PM) == 0) {
2601 CSR_WRITE_4(sc, ALC_WOL_CFG, 0);
2602 gphy |= GPHY_CFG_PHY_IDDQ | GPHY_CFG_PWDOWN_HW;
2603 mac = CSR_READ_4(sc, ALC_MAC_CFG);
2605 if ((ifp->if_capenable & IFCAP_WOL) != 0) {
2606 gphy |= GPHY_CFG_EXT_RESET;
2607 if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0)
2608 alc_setlinkspeed(sc);
2611 if ((ifp->if_capenable & IFCAP_WOL_MAGIC) != 0)
2612 pmcs |= WOL_CFG_MAGIC | WOL_CFG_MAGIC_ENB;
2613 CSR_WRITE_4(sc, ALC_WOL_CFG, pmcs);
2614 mac = CSR_READ_4(sc, ALC_MAC_CFG);
2615 mac &= ~(MAC_CFG_DBG | MAC_CFG_PROMISC | MAC_CFG_ALLMULTI |
2617 if ((ifp->if_capenable & IFCAP_WOL_MCAST) != 0)
2618 mac |= MAC_CFG_ALLMULTI | MAC_CFG_BCAST;
2619 if ((ifp->if_capenable & IFCAP_WOL) != 0)
2620 mac |= MAC_CFG_RX_ENB;
2621 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_S3DIG10,
2626 reg = CSR_READ_4(sc, ALC_MISC);
2627 reg &= ~MISC_INTNLOSC_OPEN;
2628 CSR_WRITE_4(sc, ALC_MISC, reg);
2629 reg |= MISC_INTNLOSC_OPEN;
2630 CSR_WRITE_4(sc, ALC_MISC, reg);
2631 CSR_WRITE_4(sc, ALC_MASTER_CFG, master);
2632 CSR_WRITE_4(sc, ALC_MAC_CFG, mac);
2633 CSR_WRITE_4(sc, ALC_GPHY_CFG, gphy);
2634 reg = CSR_READ_4(sc, ALC_PDLL_TRNS1);
2635 reg |= PDLL_TRNS1_D3PLLOFF_ENB;
2636 CSR_WRITE_4(sc, ALC_PDLL_TRNS1, reg);
2638 if ((sc->alc_flags & ALC_FLAG_PM) != 0) {
2640 pmstat = pci_read_config(sc->alc_dev,
2641 sc->alc_pmcap + PCIR_POWER_STATUS, 2);
2642 pmstat &= ~(PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE);
2643 if ((ifp->if_capenable & IFCAP_WOL) != 0)
2644 pmstat |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE;
2645 pci_write_config(sc->alc_dev,
2646 sc->alc_pmcap + PCIR_POWER_STATUS, pmstat, 2);
2651 alc_suspend(device_t dev)
2653 struct alc_softc *sc;
2655 sc = device_get_softc(dev);
2666 alc_resume(device_t dev)
2668 struct alc_softc *sc;
2672 sc = device_get_softc(dev);
2675 if ((sc->alc_flags & ALC_FLAG_PM) != 0) {
2676 /* Disable PME and clear PME status. */
2677 pmstat = pci_read_config(sc->alc_dev,
2678 sc->alc_pmcap + PCIR_POWER_STATUS, 2);
2679 if ((pmstat & PCIM_PSTAT_PMEENABLE) != 0) {
2680 pmstat &= ~PCIM_PSTAT_PMEENABLE;
2681 pci_write_config(sc->alc_dev,
2682 sc->alc_pmcap + PCIR_POWER_STATUS, pmstat, 2);
2688 if ((ifp->if_flags & IFF_UP) != 0) {
2689 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
2690 alc_init_locked(sc);
2698 alc_encap(struct alc_softc *sc, struct mbuf **m_head)
2700 struct alc_txdesc *txd, *txd_last;
2701 struct tx_desc *desc;
2705 bus_dma_segment_t txsegs[ALC_MAXTXSEGS];
2707 uint32_t cflags, hdrlen, ip_off, poff, vtag;
2708 int error, idx, nsegs, prod;
2710 ALC_LOCK_ASSERT(sc);
2712 M_ASSERTPKTHDR((*m_head));
2718 if ((m->m_pkthdr.csum_flags & (ALC_CSUM_FEATURES | CSUM_TSO)) != 0) {
2720 * AR81[3567]x requires offset of TCP/UDP header in its
2721 * Tx descriptor to perform Tx checksum offloading. TSO
2722 * also requires TCP header offset and modification of
2723 * IP/TCP header. This kind of operation takes many CPU
2724 * cycles on FreeBSD so fast host CPU is required to get
2725 * smooth TSO performance.
2727 struct ether_header *eh;
2729 if (M_WRITABLE(m) == 0) {
2730 /* Get a writable copy. */
2731 m = m_dup(*m_head, M_NOWAIT);
2732 /* Release original mbufs. */
2741 ip_off = sizeof(struct ether_header);
2742 m = m_pullup(m, ip_off);
2747 eh = mtod(m, struct ether_header *);
2749 * Check if hardware VLAN insertion is off.
2750 * Additional check for LLC/SNAP frame?
2752 if (eh->ether_type == htons(ETHERTYPE_VLAN)) {
2753 ip_off = sizeof(struct ether_vlan_header);
2754 m = m_pullup(m, ip_off);
2760 m = m_pullup(m, ip_off + sizeof(struct ip));
2765 ip = (struct ip *)(mtod(m, char *) + ip_off);
2766 poff = ip_off + (ip->ip_hl << 2);
2767 if ((m->m_pkthdr.csum_flags & CSUM_TSO) != 0) {
2768 m = m_pullup(m, poff + sizeof(struct tcphdr));
2773 tcp = (struct tcphdr *)(mtod(m, char *) + poff);
2774 m = m_pullup(m, poff + (tcp->th_off << 2));
2780 * Due to strict adherence of Microsoft NDIS
2781 * Large Send specification, hardware expects
2782 * a pseudo TCP checksum inserted by upper
2783 * stack. Unfortunately the pseudo TCP
2784 * checksum that NDIS refers to does not include
2785 * TCP payload length so driver should recompute
2786 * the pseudo checksum here. Hopefully this
2787 * wouldn't be much burden on modern CPUs.
2789 * Reset IP checksum and recompute TCP pseudo
2790 * checksum as NDIS specification said.
2792 ip = (struct ip *)(mtod(m, char *) + ip_off);
2793 tcp = (struct tcphdr *)(mtod(m, char *) + poff);
2795 tcp->th_sum = in_pseudo(ip->ip_src.s_addr,
2796 ip->ip_dst.s_addr, htons(IPPROTO_TCP));
2801 prod = sc->alc_cdata.alc_tx_prod;
2802 txd = &sc->alc_cdata.alc_txdesc[prod];
2804 map = txd->tx_dmamap;
2806 error = bus_dmamap_load_mbuf_sg(sc->alc_cdata.alc_tx_tag, map,
2807 *m_head, txsegs, &nsegs, 0);
2808 if (error == EFBIG) {
2809 m = m_collapse(*m_head, M_NOWAIT, ALC_MAXTXSEGS);
2816 error = bus_dmamap_load_mbuf_sg(sc->alc_cdata.alc_tx_tag, map,
2817 *m_head, txsegs, &nsegs, 0);
2823 } else if (error != 0)
2831 /* Check descriptor overrun. */
2832 if (sc->alc_cdata.alc_tx_cnt + nsegs >= ALC_TX_RING_CNT - 3) {
2833 bus_dmamap_unload(sc->alc_cdata.alc_tx_tag, map);
2836 bus_dmamap_sync(sc->alc_cdata.alc_tx_tag, map, BUS_DMASYNC_PREWRITE);
2839 cflags = TD_ETHERNET;
2843 /* Configure VLAN hardware tag insertion. */
2844 if ((m->m_flags & M_VLANTAG) != 0) {
2845 vtag = htons(m->m_pkthdr.ether_vtag);
2846 vtag = (vtag << TD_VLAN_SHIFT) & TD_VLAN_MASK;
2847 cflags |= TD_INS_VLAN_TAG;
2849 if ((m->m_pkthdr.csum_flags & CSUM_TSO) != 0) {
2850 /* Request TSO and set MSS. */
2851 cflags |= TD_TSO | TD_TSO_DESCV1;
2852 cflags |= ((uint32_t)m->m_pkthdr.tso_segsz << TD_MSS_SHIFT) &
2854 /* Set TCP header offset. */
2855 cflags |= (poff << TD_TCPHDR_OFFSET_SHIFT) &
2856 TD_TCPHDR_OFFSET_MASK;
2858 * AR81[3567]x requires the first buffer should
2859 * only hold IP/TCP header data. Payload should
2860 * be handled in other descriptors.
2862 hdrlen = poff + (tcp->th_off << 2);
2863 desc = &sc->alc_rdata.alc_tx_ring[prod];
2864 desc->len = htole32(TX_BYTES(hdrlen | vtag));
2865 desc->flags = htole32(cflags);
2866 desc->addr = htole64(txsegs[0].ds_addr);
2867 sc->alc_cdata.alc_tx_cnt++;
2868 ALC_DESC_INC(prod, ALC_TX_RING_CNT);
2869 if (m->m_len - hdrlen > 0) {
2870 /* Handle remaining payload of the first fragment. */
2871 desc = &sc->alc_rdata.alc_tx_ring[prod];
2872 desc->len = htole32(TX_BYTES((m->m_len - hdrlen) |
2874 desc->flags = htole32(cflags);
2875 desc->addr = htole64(txsegs[0].ds_addr + hdrlen);
2876 sc->alc_cdata.alc_tx_cnt++;
2877 ALC_DESC_INC(prod, ALC_TX_RING_CNT);
2879 /* Handle remaining fragments. */
2881 } else if ((m->m_pkthdr.csum_flags & ALC_CSUM_FEATURES) != 0) {
2882 /* Configure Tx checksum offload. */
2883 #ifdef ALC_USE_CUSTOM_CSUM
2884 cflags |= TD_CUSTOM_CSUM;
2885 /* Set checksum start offset. */
2886 cflags |= ((poff >> 1) << TD_PLOAD_OFFSET_SHIFT) &
2887 TD_PLOAD_OFFSET_MASK;
2888 /* Set checksum insertion position of TCP/UDP. */
2889 cflags |= (((poff + m->m_pkthdr.csum_data) >> 1) <<
2890 TD_CUSTOM_CSUM_OFFSET_SHIFT) & TD_CUSTOM_CSUM_OFFSET_MASK;
2892 if ((m->m_pkthdr.csum_flags & CSUM_IP) != 0)
2893 cflags |= TD_IPCSUM;
2894 if ((m->m_pkthdr.csum_flags & CSUM_TCP) != 0)
2895 cflags |= TD_TCPCSUM;
2896 if ((m->m_pkthdr.csum_flags & CSUM_UDP) != 0)
2897 cflags |= TD_UDPCSUM;
2898 /* Set TCP/UDP header offset. */
2899 cflags |= (poff << TD_L4HDR_OFFSET_SHIFT) &
2900 TD_L4HDR_OFFSET_MASK;
2903 for (; idx < nsegs; idx++) {
2904 desc = &sc->alc_rdata.alc_tx_ring[prod];
2905 desc->len = htole32(TX_BYTES(txsegs[idx].ds_len) | vtag);
2906 desc->flags = htole32(cflags);
2907 desc->addr = htole64(txsegs[idx].ds_addr);
2908 sc->alc_cdata.alc_tx_cnt++;
2909 ALC_DESC_INC(prod, ALC_TX_RING_CNT);
2911 /* Update producer index. */
2912 sc->alc_cdata.alc_tx_prod = prod;
2914 /* Finally set EOP on the last descriptor. */
2915 prod = (prod + ALC_TX_RING_CNT - 1) % ALC_TX_RING_CNT;
2916 desc = &sc->alc_rdata.alc_tx_ring[prod];
2917 desc->flags |= htole32(TD_EOP);
2919 /* Swap dmamap of the first and the last. */
2920 txd = &sc->alc_cdata.alc_txdesc[prod];
2921 map = txd_last->tx_dmamap;
2922 txd_last->tx_dmamap = txd->tx_dmamap;
2923 txd->tx_dmamap = map;
2930 alc_start(struct ifnet *ifp)
2932 struct alc_softc *sc;
2936 alc_start_locked(ifp);
2941 alc_start_locked(struct ifnet *ifp)
2943 struct alc_softc *sc;
2944 struct mbuf *m_head;
2949 ALC_LOCK_ASSERT(sc);
2951 /* Reclaim transmitted frames. */
2952 if (sc->alc_cdata.alc_tx_cnt >= ALC_TX_DESC_HIWAT)
2955 if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) !=
2956 IFF_DRV_RUNNING || (sc->alc_flags & ALC_FLAG_LINK) == 0)
2959 for (enq = 0; !IFQ_DRV_IS_EMPTY(&ifp->if_snd); ) {
2960 IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head);
2964 * Pack the data into the transmit ring. If we
2965 * don't have room, set the OACTIVE flag and wait
2966 * for the NIC to drain the ring.
2968 if (alc_encap(sc, &m_head)) {
2971 IFQ_DRV_PREPEND(&ifp->if_snd, m_head);
2972 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2978 * If there's a BPF listener, bounce a copy of this frame
2981 ETHER_BPF_MTAP(ifp, m_head);
2989 alc_start_tx(struct alc_softc *sc)
2992 /* Sync descriptors. */
2993 bus_dmamap_sync(sc->alc_cdata.alc_tx_ring_tag,
2994 sc->alc_cdata.alc_tx_ring_map, BUS_DMASYNC_PREWRITE);
2995 /* Kick. Assume we're using normal Tx priority queue. */
2996 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
2997 CSR_WRITE_2(sc, ALC_MBOX_TD_PRI0_PROD_IDX,
2998 (uint16_t)sc->alc_cdata.alc_tx_prod);
3000 CSR_WRITE_4(sc, ALC_MBOX_TD_PROD_IDX,
3001 (sc->alc_cdata.alc_tx_prod <<
3002 MBOX_TD_PROD_LO_IDX_SHIFT) &
3003 MBOX_TD_PROD_LO_IDX_MASK);
3004 /* Set a timeout in case the chip goes out to lunch. */
3005 sc->alc_watchdog_timer = ALC_TX_TIMEOUT;
3009 alc_watchdog(struct alc_softc *sc)
3013 ALC_LOCK_ASSERT(sc);
3015 if (sc->alc_watchdog_timer == 0 || --sc->alc_watchdog_timer)
3019 if ((sc->alc_flags & ALC_FLAG_LINK) == 0) {
3020 if_printf(sc->alc_ifp, "watchdog timeout (lost link)\n");
3021 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
3022 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
3023 alc_init_locked(sc);
3026 if_printf(sc->alc_ifp, "watchdog timeout -- resetting\n");
3027 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
3028 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
3029 alc_init_locked(sc);
3030 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
3031 alc_start_locked(ifp);
3035 alc_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
3037 struct alc_softc *sc;
3039 struct mii_data *mii;
3043 ifr = (struct ifreq *)data;
3047 if (ifr->ifr_mtu < ETHERMIN ||
3048 ifr->ifr_mtu > (sc->alc_ident->max_framelen -
3049 sizeof(struct ether_vlan_header) - ETHER_CRC_LEN) ||
3050 ((sc->alc_flags & ALC_FLAG_JUMBO) == 0 &&
3051 ifr->ifr_mtu > ETHERMTU))
3053 else if (ifp->if_mtu != ifr->ifr_mtu) {
3055 ifp->if_mtu = ifr->ifr_mtu;
3056 /* AR81[3567]x has 13 bits MSS field. */
3057 if (ifp->if_mtu > ALC_TSO_MTU &&
3058 (ifp->if_capenable & IFCAP_TSO4) != 0) {
3059 ifp->if_capenable &= ~IFCAP_TSO4;
3060 ifp->if_hwassist &= ~CSUM_TSO;
3061 VLAN_CAPABILITIES(ifp);
3068 if ((ifp->if_flags & IFF_UP) != 0) {
3069 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0 &&
3070 ((ifp->if_flags ^ sc->alc_if_flags) &
3071 (IFF_PROMISC | IFF_ALLMULTI)) != 0)
3074 alc_init_locked(sc);
3075 } else if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
3077 sc->alc_if_flags = ifp->if_flags;
3083 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
3089 mii = device_get_softc(sc->alc_miibus);
3090 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, cmd);
3094 mask = ifr->ifr_reqcap ^ ifp->if_capenable;
3095 if ((mask & IFCAP_TXCSUM) != 0 &&
3096 (ifp->if_capabilities & IFCAP_TXCSUM) != 0) {
3097 ifp->if_capenable ^= IFCAP_TXCSUM;
3098 if ((ifp->if_capenable & IFCAP_TXCSUM) != 0)
3099 ifp->if_hwassist |= ALC_CSUM_FEATURES;
3101 ifp->if_hwassist &= ~ALC_CSUM_FEATURES;
3103 if ((mask & IFCAP_TSO4) != 0 &&
3104 (ifp->if_capabilities & IFCAP_TSO4) != 0) {
3105 ifp->if_capenable ^= IFCAP_TSO4;
3106 if ((ifp->if_capenable & IFCAP_TSO4) != 0) {
3107 /* AR81[3567]x has 13 bits MSS field. */
3108 if (ifp->if_mtu > ALC_TSO_MTU) {
3109 ifp->if_capenable &= ~IFCAP_TSO4;
3110 ifp->if_hwassist &= ~CSUM_TSO;
3112 ifp->if_hwassist |= CSUM_TSO;
3114 ifp->if_hwassist &= ~CSUM_TSO;
3116 if ((mask & IFCAP_WOL_MCAST) != 0 &&
3117 (ifp->if_capabilities & IFCAP_WOL_MCAST) != 0)
3118 ifp->if_capenable ^= IFCAP_WOL_MCAST;
3119 if ((mask & IFCAP_WOL_MAGIC) != 0 &&
3120 (ifp->if_capabilities & IFCAP_WOL_MAGIC) != 0)
3121 ifp->if_capenable ^= IFCAP_WOL_MAGIC;
3122 if ((mask & IFCAP_VLAN_HWTAGGING) != 0 &&
3123 (ifp->if_capabilities & IFCAP_VLAN_HWTAGGING) != 0) {
3124 ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING;
3127 if ((mask & IFCAP_VLAN_HWCSUM) != 0 &&
3128 (ifp->if_capabilities & IFCAP_VLAN_HWCSUM) != 0)
3129 ifp->if_capenable ^= IFCAP_VLAN_HWCSUM;
3130 if ((mask & IFCAP_VLAN_HWTSO) != 0 &&
3131 (ifp->if_capabilities & IFCAP_VLAN_HWTSO) != 0)
3132 ifp->if_capenable ^= IFCAP_VLAN_HWTSO;
3133 if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) == 0)
3134 ifp->if_capenable &=
3135 ~(IFCAP_VLAN_HWTSO | IFCAP_VLAN_HWCSUM);
3137 VLAN_CAPABILITIES(ifp);
3140 error = ether_ioctl(ifp, cmd, data);
3148 alc_mac_config(struct alc_softc *sc)
3150 struct mii_data *mii;
3153 ALC_LOCK_ASSERT(sc);
3155 mii = device_get_softc(sc->alc_miibus);
3156 reg = CSR_READ_4(sc, ALC_MAC_CFG);
3157 reg &= ~(MAC_CFG_FULL_DUPLEX | MAC_CFG_TX_FC | MAC_CFG_RX_FC |
3158 MAC_CFG_SPEED_MASK);
3159 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0 ||
3160 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151 ||
3161 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2 ||
3162 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2)
3163 reg |= MAC_CFG_HASH_ALG_CRC32 | MAC_CFG_SPEED_MODE_SW;
3164 /* Reprogram MAC with resolved speed/duplex. */
3165 switch (IFM_SUBTYPE(mii->mii_media_active)) {
3168 reg |= MAC_CFG_SPEED_10_100;
3171 reg |= MAC_CFG_SPEED_1000;
3174 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) {
3175 reg |= MAC_CFG_FULL_DUPLEX;
3176 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_TXPAUSE) != 0)
3177 reg |= MAC_CFG_TX_FC;
3178 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_RXPAUSE) != 0)
3179 reg |= MAC_CFG_RX_FC;
3181 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
3185 alc_stats_clear(struct alc_softc *sc)
3187 struct smb sb, *smb;
3191 if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0) {
3192 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag,
3193 sc->alc_cdata.alc_smb_map,
3194 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
3195 smb = sc->alc_rdata.alc_smb;
3196 /* Update done, clear. */
3198 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag,
3199 sc->alc_cdata.alc_smb_map,
3200 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
3202 for (reg = &sb.rx_frames, i = 0; reg <= &sb.rx_pkts_filtered;
3204 CSR_READ_4(sc, ALC_RX_MIB_BASE + i);
3205 i += sizeof(uint32_t);
3207 /* Read Tx statistics. */
3208 for (reg = &sb.tx_frames, i = 0; reg <= &sb.tx_mcast_bytes;
3210 CSR_READ_4(sc, ALC_TX_MIB_BASE + i);
3211 i += sizeof(uint32_t);
3217 alc_stats_update(struct alc_softc *sc)
3219 struct alc_hw_stats *stat;
3220 struct smb sb, *smb;
3225 ALC_LOCK_ASSERT(sc);
3228 stat = &sc->alc_stats;
3229 if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0) {
3230 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag,
3231 sc->alc_cdata.alc_smb_map,
3232 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
3233 smb = sc->alc_rdata.alc_smb;
3234 if (smb->updated == 0)
3238 /* Read Rx statistics. */
3239 for (reg = &sb.rx_frames, i = 0; reg <= &sb.rx_pkts_filtered;
3241 *reg = CSR_READ_4(sc, ALC_RX_MIB_BASE + i);
3242 i += sizeof(uint32_t);
3244 /* Read Tx statistics. */
3245 for (reg = &sb.tx_frames, i = 0; reg <= &sb.tx_mcast_bytes;
3247 *reg = CSR_READ_4(sc, ALC_TX_MIB_BASE + i);
3248 i += sizeof(uint32_t);
3253 stat->rx_frames += smb->rx_frames;
3254 stat->rx_bcast_frames += smb->rx_bcast_frames;
3255 stat->rx_mcast_frames += smb->rx_mcast_frames;
3256 stat->rx_pause_frames += smb->rx_pause_frames;
3257 stat->rx_control_frames += smb->rx_control_frames;
3258 stat->rx_crcerrs += smb->rx_crcerrs;
3259 stat->rx_lenerrs += smb->rx_lenerrs;
3260 stat->rx_bytes += smb->rx_bytes;
3261 stat->rx_runts += smb->rx_runts;
3262 stat->rx_fragments += smb->rx_fragments;
3263 stat->rx_pkts_64 += smb->rx_pkts_64;
3264 stat->rx_pkts_65_127 += smb->rx_pkts_65_127;
3265 stat->rx_pkts_128_255 += smb->rx_pkts_128_255;
3266 stat->rx_pkts_256_511 += smb->rx_pkts_256_511;
3267 stat->rx_pkts_512_1023 += smb->rx_pkts_512_1023;
3268 stat->rx_pkts_1024_1518 += smb->rx_pkts_1024_1518;
3269 stat->rx_pkts_1519_max += smb->rx_pkts_1519_max;
3270 stat->rx_pkts_truncated += smb->rx_pkts_truncated;
3271 stat->rx_fifo_oflows += smb->rx_fifo_oflows;
3272 stat->rx_rrs_errs += smb->rx_rrs_errs;
3273 stat->rx_alignerrs += smb->rx_alignerrs;
3274 stat->rx_bcast_bytes += smb->rx_bcast_bytes;
3275 stat->rx_mcast_bytes += smb->rx_mcast_bytes;
3276 stat->rx_pkts_filtered += smb->rx_pkts_filtered;
3279 stat->tx_frames += smb->tx_frames;
3280 stat->tx_bcast_frames += smb->tx_bcast_frames;
3281 stat->tx_mcast_frames += smb->tx_mcast_frames;
3282 stat->tx_pause_frames += smb->tx_pause_frames;
3283 stat->tx_excess_defer += smb->tx_excess_defer;
3284 stat->tx_control_frames += smb->tx_control_frames;
3285 stat->tx_deferred += smb->tx_deferred;
3286 stat->tx_bytes += smb->tx_bytes;
3287 stat->tx_pkts_64 += smb->tx_pkts_64;
3288 stat->tx_pkts_65_127 += smb->tx_pkts_65_127;
3289 stat->tx_pkts_128_255 += smb->tx_pkts_128_255;
3290 stat->tx_pkts_256_511 += smb->tx_pkts_256_511;
3291 stat->tx_pkts_512_1023 += smb->tx_pkts_512_1023;
3292 stat->tx_pkts_1024_1518 += smb->tx_pkts_1024_1518;
3293 stat->tx_pkts_1519_max += smb->tx_pkts_1519_max;
3294 stat->tx_single_colls += smb->tx_single_colls;
3295 stat->tx_multi_colls += smb->tx_multi_colls;
3296 stat->tx_late_colls += smb->tx_late_colls;
3297 stat->tx_excess_colls += smb->tx_excess_colls;
3298 stat->tx_underrun += smb->tx_underrun;
3299 stat->tx_desc_underrun += smb->tx_desc_underrun;
3300 stat->tx_lenerrs += smb->tx_lenerrs;
3301 stat->tx_pkts_truncated += smb->tx_pkts_truncated;
3302 stat->tx_bcast_bytes += smb->tx_bcast_bytes;
3303 stat->tx_mcast_bytes += smb->tx_mcast_bytes;
3305 /* Update counters in ifnet. */
3306 if_inc_counter(ifp, IFCOUNTER_OPACKETS, smb->tx_frames);
3308 if_inc_counter(ifp, IFCOUNTER_COLLISIONS, smb->tx_single_colls +
3309 smb->tx_multi_colls * 2 + smb->tx_late_colls +
3310 smb->tx_excess_colls * HDPX_CFG_RETRY_DEFAULT);
3312 if_inc_counter(ifp, IFCOUNTER_OERRORS, smb->tx_late_colls +
3313 smb->tx_excess_colls + smb->tx_underrun + smb->tx_pkts_truncated);
3315 if_inc_counter(ifp, IFCOUNTER_IPACKETS, smb->rx_frames);
3317 if_inc_counter(ifp, IFCOUNTER_IERRORS,
3318 smb->rx_crcerrs + smb->rx_lenerrs +
3319 smb->rx_runts + smb->rx_pkts_truncated +
3320 smb->rx_fifo_oflows + smb->rx_rrs_errs +
3323 if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0) {
3324 /* Update done, clear. */
3326 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag,
3327 sc->alc_cdata.alc_smb_map,
3328 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
3335 struct alc_softc *sc;
3338 sc = (struct alc_softc *)arg;
3340 status = CSR_READ_4(sc, ALC_INTR_STATUS);
3341 if ((status & ALC_INTRS) == 0)
3342 return (FILTER_STRAY);
3343 /* Disable interrupts. */
3344 CSR_WRITE_4(sc, ALC_INTR_STATUS, INTR_DIS_INT);
3345 taskqueue_enqueue(sc->alc_tq, &sc->alc_int_task);
3347 return (FILTER_HANDLED);
3351 alc_int_task(void *arg, int pending)
3353 struct alc_softc *sc;
3358 sc = (struct alc_softc *)arg;
3361 status = CSR_READ_4(sc, ALC_INTR_STATUS);
3363 if (sc->alc_morework != 0) {
3364 sc->alc_morework = 0;
3365 status |= INTR_RX_PKT;
3367 if ((status & ALC_INTRS) == 0)
3370 /* Acknowledge interrupts but still disable interrupts. */
3371 CSR_WRITE_4(sc, ALC_INTR_STATUS, status | INTR_DIS_INT);
3374 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) {
3375 if ((status & INTR_RX_PKT) != 0) {
3376 more = alc_rxintr(sc, sc->alc_process_limit);
3378 sc->alc_morework = 1;
3379 else if (more == EIO) {
3380 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
3381 alc_init_locked(sc);
3386 if ((status & (INTR_DMA_RD_TO_RST | INTR_DMA_WR_TO_RST |
3387 INTR_TXQ_TO_RST)) != 0) {
3388 if ((status & INTR_DMA_RD_TO_RST) != 0)
3389 device_printf(sc->alc_dev,
3390 "DMA read error! -- resetting\n");
3391 if ((status & INTR_DMA_WR_TO_RST) != 0)
3392 device_printf(sc->alc_dev,
3393 "DMA write error! -- resetting\n");
3394 if ((status & INTR_TXQ_TO_RST) != 0)
3395 device_printf(sc->alc_dev,
3396 "TxQ reset! -- resetting\n");
3397 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
3398 alc_init_locked(sc);
3402 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0 &&
3403 !IFQ_DRV_IS_EMPTY(&ifp->if_snd))
3404 alc_start_locked(ifp);
3407 if (more == EAGAIN ||
3408 (CSR_READ_4(sc, ALC_INTR_STATUS) & ALC_INTRS) != 0) {
3410 taskqueue_enqueue(sc->alc_tq, &sc->alc_int_task);
3415 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) {
3416 /* Re-enable interrupts if we're running. */
3417 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0x7FFFFFFF);
3423 alc_txeof(struct alc_softc *sc)
3426 struct alc_txdesc *txd;
3427 uint32_t cons, prod;
3430 ALC_LOCK_ASSERT(sc);
3434 if (sc->alc_cdata.alc_tx_cnt == 0)
3436 bus_dmamap_sync(sc->alc_cdata.alc_tx_ring_tag,
3437 sc->alc_cdata.alc_tx_ring_map, BUS_DMASYNC_POSTWRITE);
3438 if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0) {
3439 bus_dmamap_sync(sc->alc_cdata.alc_cmb_tag,
3440 sc->alc_cdata.alc_cmb_map, BUS_DMASYNC_POSTREAD);
3441 prod = sc->alc_rdata.alc_cmb->cons;
3443 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
3444 prod = CSR_READ_2(sc, ALC_MBOX_TD_PRI0_CONS_IDX);
3446 prod = CSR_READ_4(sc, ALC_MBOX_TD_CONS_IDX);
3447 /* Assume we're using normal Tx priority queue. */
3448 prod = (prod & MBOX_TD_CONS_LO_IDX_MASK) >>
3449 MBOX_TD_CONS_LO_IDX_SHIFT;
3452 cons = sc->alc_cdata.alc_tx_cons;
3454 * Go through our Tx list and free mbufs for those
3455 * frames which have been transmitted.
3457 for (prog = 0; cons != prod; prog++,
3458 ALC_DESC_INC(cons, ALC_TX_RING_CNT)) {
3459 if (sc->alc_cdata.alc_tx_cnt <= 0)
3462 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
3463 sc->alc_cdata.alc_tx_cnt--;
3464 txd = &sc->alc_cdata.alc_txdesc[cons];
3465 if (txd->tx_m != NULL) {
3466 /* Reclaim transmitted mbufs. */
3467 bus_dmamap_sync(sc->alc_cdata.alc_tx_tag,
3468 txd->tx_dmamap, BUS_DMASYNC_POSTWRITE);
3469 bus_dmamap_unload(sc->alc_cdata.alc_tx_tag,
3476 if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0)
3477 bus_dmamap_sync(sc->alc_cdata.alc_cmb_tag,
3478 sc->alc_cdata.alc_cmb_map, BUS_DMASYNC_PREREAD);
3479 sc->alc_cdata.alc_tx_cons = cons;
3481 * Unarm watchdog timer only when there is no pending
3482 * frames in Tx queue.
3484 if (sc->alc_cdata.alc_tx_cnt == 0)
3485 sc->alc_watchdog_timer = 0;
3489 alc_newbuf(struct alc_softc *sc, struct alc_rxdesc *rxd)
3492 bus_dma_segment_t segs[1];
3496 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
3499 m->m_len = m->m_pkthdr.len = RX_BUF_SIZE_MAX;
3500 #ifndef __NO_STRICT_ALIGNMENT
3501 m_adj(m, sizeof(uint64_t));
3504 if (bus_dmamap_load_mbuf_sg(sc->alc_cdata.alc_rx_tag,
3505 sc->alc_cdata.alc_rx_sparemap, m, segs, &nsegs, 0) != 0) {
3509 KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs));
3511 if (rxd->rx_m != NULL) {
3512 bus_dmamap_sync(sc->alc_cdata.alc_rx_tag, rxd->rx_dmamap,
3513 BUS_DMASYNC_POSTREAD);
3514 bus_dmamap_unload(sc->alc_cdata.alc_rx_tag, rxd->rx_dmamap);
3516 map = rxd->rx_dmamap;
3517 rxd->rx_dmamap = sc->alc_cdata.alc_rx_sparemap;
3518 sc->alc_cdata.alc_rx_sparemap = map;
3519 bus_dmamap_sync(sc->alc_cdata.alc_rx_tag, rxd->rx_dmamap,
3520 BUS_DMASYNC_PREREAD);
3522 rxd->rx_desc->addr = htole64(segs[0].ds_addr);
3527 alc_rxintr(struct alc_softc *sc, int count)
3530 struct rx_rdesc *rrd;
3531 uint32_t nsegs, status;
3534 bus_dmamap_sync(sc->alc_cdata.alc_rr_ring_tag,
3535 sc->alc_cdata.alc_rr_ring_map,
3536 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
3537 bus_dmamap_sync(sc->alc_cdata.alc_rx_ring_tag,
3538 sc->alc_cdata.alc_rx_ring_map, BUS_DMASYNC_POSTWRITE);
3539 rr_cons = sc->alc_cdata.alc_rr_cons;
3541 for (prog = 0; (ifp->if_drv_flags & IFF_DRV_RUNNING) != 0;) {
3544 rrd = &sc->alc_rdata.alc_rr_ring[rr_cons];
3545 status = le32toh(rrd->status);
3546 if ((status & RRD_VALID) == 0)
3548 nsegs = RRD_RD_CNT(le32toh(rrd->rdinfo));
3550 /* This should not happen! */
3551 device_printf(sc->alc_dev,
3552 "unexpected segment count -- resetting\n");
3556 /* Clear Rx return status. */
3558 ALC_DESC_INC(rr_cons, ALC_RR_RING_CNT);
3559 sc->alc_cdata.alc_rx_cons += nsegs;
3560 sc->alc_cdata.alc_rx_cons %= ALC_RR_RING_CNT;
3565 /* Update the consumer index. */
3566 sc->alc_cdata.alc_rr_cons = rr_cons;
3567 /* Sync Rx return descriptors. */
3568 bus_dmamap_sync(sc->alc_cdata.alc_rr_ring_tag,
3569 sc->alc_cdata.alc_rr_ring_map,
3570 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
3572 * Sync updated Rx descriptors such that controller see
3573 * modified buffer addresses.
3575 bus_dmamap_sync(sc->alc_cdata.alc_rx_ring_tag,
3576 sc->alc_cdata.alc_rx_ring_map, BUS_DMASYNC_PREWRITE);
3578 * Let controller know availability of new Rx buffers.
3579 * Since alc(4) use RXQ_CFG_RD_BURST_DEFAULT descriptors
3580 * it may be possible to update ALC_MBOX_RD0_PROD_IDX
3581 * only when Rx buffer pre-fetching is required. In
3582 * addition we already set ALC_RX_RD_FREE_THRESH to
3583 * RX_RD_FREE_THRESH_LO_DEFAULT descriptors. However
3584 * it still seems that pre-fetching needs more
3587 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
3588 CSR_WRITE_2(sc, ALC_MBOX_RD0_PROD_IDX,
3589 (uint16_t)sc->alc_cdata.alc_rx_cons);
3591 CSR_WRITE_4(sc, ALC_MBOX_RD0_PROD_IDX,
3592 sc->alc_cdata.alc_rx_cons);
3595 return (count > 0 ? 0 : EAGAIN);
3598 #ifndef __NO_STRICT_ALIGNMENT
3599 static struct mbuf *
3600 alc_fixup_rx(struct ifnet *ifp, struct mbuf *m)
3604 uint16_t *src, *dst;
3606 src = mtod(m, uint16_t *);
3609 if (m->m_next == NULL) {
3610 for (i = 0; i < (m->m_len / sizeof(uint16_t) + 1); i++)
3616 * Append a new mbuf to received mbuf chain and copy ethernet
3617 * header from the mbuf chain. This can save lots of CPU
3618 * cycles for jumbo frame.
3620 MGETHDR(n, M_NOWAIT, MT_DATA);
3622 if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1);
3626 bcopy(m->m_data, n->m_data, ETHER_HDR_LEN);
3627 m->m_data += ETHER_HDR_LEN;
3628 m->m_len -= ETHER_HDR_LEN;
3629 n->m_len = ETHER_HDR_LEN;
3630 M_MOVE_PKTHDR(n, m);
3636 /* Receive a frame. */
3638 alc_rxeof(struct alc_softc *sc, struct rx_rdesc *rrd)
3640 struct alc_rxdesc *rxd;
3642 struct mbuf *mp, *m;
3643 uint32_t rdinfo, status, vtag;
3644 int count, nsegs, rx_cons;
3647 status = le32toh(rrd->status);
3648 rdinfo = le32toh(rrd->rdinfo);
3649 rx_cons = RRD_RD_IDX(rdinfo);
3650 nsegs = RRD_RD_CNT(rdinfo);
3652 sc->alc_cdata.alc_rxlen = RRD_BYTES(status);
3653 if ((status & (RRD_ERR_SUM | RRD_ERR_LENGTH)) != 0) {
3655 * We want to pass the following frames to upper
3656 * layer regardless of error status of Rx return
3659 * o IP/TCP/UDP checksum is bad.
3660 * o frame length and protocol specific length
3663 * Force network stack compute checksum for
3666 status |= RRD_TCP_UDPCSUM_NOK | RRD_IPCSUM_NOK;
3667 if ((status & (RRD_ERR_CRC | RRD_ERR_ALIGN |
3668 RRD_ERR_TRUNC | RRD_ERR_RUNT)) != 0)
3672 for (count = 0; count < nsegs; count++,
3673 ALC_DESC_INC(rx_cons, ALC_RX_RING_CNT)) {
3674 rxd = &sc->alc_cdata.alc_rxdesc[rx_cons];
3676 /* Add a new receive buffer to the ring. */
3677 if (alc_newbuf(sc, rxd) != 0) {
3678 if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1);
3679 /* Reuse Rx buffers. */
3680 if (sc->alc_cdata.alc_rxhead != NULL)
3681 m_freem(sc->alc_cdata.alc_rxhead);
3686 * Assume we've received a full sized frame.
3687 * Actual size is fixed when we encounter the end of
3688 * multi-segmented frame.
3690 mp->m_len = sc->alc_buf_size;
3692 /* Chain received mbufs. */
3693 if (sc->alc_cdata.alc_rxhead == NULL) {
3694 sc->alc_cdata.alc_rxhead = mp;
3695 sc->alc_cdata.alc_rxtail = mp;
3697 mp->m_flags &= ~M_PKTHDR;
3698 sc->alc_cdata.alc_rxprev_tail =
3699 sc->alc_cdata.alc_rxtail;
3700 sc->alc_cdata.alc_rxtail->m_next = mp;
3701 sc->alc_cdata.alc_rxtail = mp;
3704 if (count == nsegs - 1) {
3705 /* Last desc. for this frame. */
3706 m = sc->alc_cdata.alc_rxhead;
3707 m->m_flags |= M_PKTHDR;
3709 * It seems that L1C/L2C controller has no way
3710 * to tell hardware to strip CRC bytes.
3713 sc->alc_cdata.alc_rxlen - ETHER_CRC_LEN;
3715 /* Set last mbuf size. */
3716 mp->m_len = sc->alc_cdata.alc_rxlen -
3717 (nsegs - 1) * sc->alc_buf_size;
3718 /* Remove the CRC bytes in chained mbufs. */
3719 if (mp->m_len <= ETHER_CRC_LEN) {
3720 sc->alc_cdata.alc_rxtail =
3721 sc->alc_cdata.alc_rxprev_tail;
3722 sc->alc_cdata.alc_rxtail->m_len -=
3723 (ETHER_CRC_LEN - mp->m_len);
3724 sc->alc_cdata.alc_rxtail->m_next = NULL;
3727 mp->m_len -= ETHER_CRC_LEN;
3730 m->m_len = m->m_pkthdr.len;
3731 m->m_pkthdr.rcvif = ifp;
3733 * Due to hardware bugs, Rx checksum offloading
3734 * was intentionally disabled.
3736 if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) != 0 &&
3737 (status & RRD_VLAN_TAG) != 0) {
3738 vtag = RRD_VLAN(le32toh(rrd->vtag));
3739 m->m_pkthdr.ether_vtag = ntohs(vtag);
3740 m->m_flags |= M_VLANTAG;
3742 #ifndef __NO_STRICT_ALIGNMENT
3743 m = alc_fixup_rx(ifp, m);
3749 (*ifp->if_input)(ifp, m);
3754 /* Reset mbuf chains. */
3755 ALC_RXCHAIN_RESET(sc);
3761 struct alc_softc *sc;
3762 struct mii_data *mii;
3764 sc = (struct alc_softc *)arg;
3766 ALC_LOCK_ASSERT(sc);
3768 mii = device_get_softc(sc->alc_miibus);
3770 alc_stats_update(sc);
3772 * alc(4) does not rely on Tx completion interrupts to reclaim
3773 * transferred buffers. Instead Tx completion interrupts are
3774 * used to hint for scheduling Tx task. So it's necessary to
3775 * release transmitted buffers by kicking Tx completion
3776 * handler. This limits the maximum reclamation delay to a hz.
3780 callout_reset(&sc->alc_tick_ch, hz, alc_tick, sc);
3784 alc_osc_reset(struct alc_softc *sc)
3788 reg = CSR_READ_4(sc, ALC_MISC3);
3789 reg &= ~MISC3_25M_BY_SW;
3790 reg |= MISC3_25M_NOTO_INTNL;
3791 CSR_WRITE_4(sc, ALC_MISC3, reg);
3793 reg = CSR_READ_4(sc, ALC_MISC);
3794 if (AR816X_REV(sc->alc_rev) >= AR816X_REV_B0) {
3796 * Restore over-current protection default value.
3797 * This value could be reset by MAC reset.
3799 reg &= ~MISC_PSW_OCP_MASK;
3800 reg |= (MISC_PSW_OCP_DEFAULT << MISC_PSW_OCP_SHIFT);
3801 reg &= ~MISC_INTNLOSC_OPEN;
3802 CSR_WRITE_4(sc, ALC_MISC, reg);
3803 CSR_WRITE_4(sc, ALC_MISC, reg | MISC_INTNLOSC_OPEN);
3804 reg = CSR_READ_4(sc, ALC_MISC2);
3805 reg &= ~MISC2_CALB_START;
3806 CSR_WRITE_4(sc, ALC_MISC2, reg);
3807 CSR_WRITE_4(sc, ALC_MISC2, reg | MISC2_CALB_START);
3810 reg &= ~MISC_INTNLOSC_OPEN;
3811 /* Disable isolate for revision A devices. */
3812 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1)
3813 reg &= ~MISC_ISO_ENB;
3814 CSR_WRITE_4(sc, ALC_MISC, reg | MISC_INTNLOSC_OPEN);
3815 CSR_WRITE_4(sc, ALC_MISC, reg);
3822 alc_reset(struct alc_softc *sc)
3824 uint32_t pmcfg, reg;
3828 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
3829 /* Reset workaround. */
3830 CSR_WRITE_4(sc, ALC_MBOX_RD0_PROD_IDX, 1);
3831 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1 &&
3832 (sc->alc_rev & 0x01) != 0) {
3833 /* Disable L0s/L1s before reset. */
3834 pmcfg = CSR_READ_4(sc, ALC_PM_CFG);
3835 if ((pmcfg & (PM_CFG_ASPM_L0S_ENB | PM_CFG_ASPM_L1_ENB))
3837 pmcfg &= ~(PM_CFG_ASPM_L0S_ENB |
3838 PM_CFG_ASPM_L1_ENB);
3839 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg);
3843 reg = CSR_READ_4(sc, ALC_MASTER_CFG);
3844 reg |= MASTER_OOB_DIS_OFF | MASTER_RESET;
3845 CSR_WRITE_4(sc, ALC_MASTER_CFG, reg);
3847 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
3848 for (i = ALC_RESET_TIMEOUT; i > 0; i--) {
3850 if (CSR_READ_4(sc, ALC_MBOX_RD0_PROD_IDX) == 0)
3854 device_printf(sc->alc_dev, "MAC reset timeout!\n");
3856 for (i = ALC_RESET_TIMEOUT; i > 0; i--) {
3858 if ((CSR_READ_4(sc, ALC_MASTER_CFG) & MASTER_RESET) == 0)
3862 device_printf(sc->alc_dev, "master reset timeout!\n");
3864 for (i = ALC_RESET_TIMEOUT; i > 0; i--) {
3865 reg = CSR_READ_4(sc, ALC_IDLE_STATUS);
3866 if ((reg & (IDLE_STATUS_RXMAC | IDLE_STATUS_TXMAC |
3867 IDLE_STATUS_RXQ | IDLE_STATUS_TXQ)) == 0)
3872 device_printf(sc->alc_dev, "reset timeout(0x%08x)!\n", reg);
3874 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
3875 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1 &&
3876 (sc->alc_rev & 0x01) != 0) {
3877 reg = CSR_READ_4(sc, ALC_MASTER_CFG);
3878 reg |= MASTER_CLK_SEL_DIS;
3879 CSR_WRITE_4(sc, ALC_MASTER_CFG, reg);
3880 /* Restore L0s/L1s config. */
3881 if ((pmcfg & (PM_CFG_ASPM_L0S_ENB | PM_CFG_ASPM_L1_ENB))
3883 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg);
3887 reg = CSR_READ_4(sc, ALC_MISC3);
3888 reg &= ~MISC3_25M_BY_SW;
3889 reg |= MISC3_25M_NOTO_INTNL;
3890 CSR_WRITE_4(sc, ALC_MISC3, reg);
3891 reg = CSR_READ_4(sc, ALC_MISC);
3892 reg &= ~MISC_INTNLOSC_OPEN;
3893 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1)
3894 reg &= ~MISC_ISO_ENB;
3895 CSR_WRITE_4(sc, ALC_MISC, reg);
3898 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0 ||
3899 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B ||
3900 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2)
3901 CSR_WRITE_4(sc, ALC_SERDES_LOCK,
3902 CSR_READ_4(sc, ALC_SERDES_LOCK) | SERDES_MAC_CLK_SLOWDOWN |
3903 SERDES_PHY_CLK_SLOWDOWN);
3909 struct alc_softc *sc;
3911 sc = (struct alc_softc *)xsc;
3913 alc_init_locked(sc);
3918 alc_init_locked(struct alc_softc *sc)
3921 struct mii_data *mii;
3922 uint8_t eaddr[ETHER_ADDR_LEN];
3924 uint32_t reg, rxf_hi, rxf_lo;
3926 ALC_LOCK_ASSERT(sc);
3929 mii = device_get_softc(sc->alc_miibus);
3931 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
3934 * Cancel any pending I/O.
3938 * Reset the chip to a known state.
3942 /* Initialize Rx descriptors. */
3943 if (alc_init_rx_ring(sc) != 0) {
3944 device_printf(sc->alc_dev, "no memory for Rx buffers.\n");
3948 alc_init_rr_ring(sc);
3949 alc_init_tx_ring(sc);
3953 /* Enable all clocks. */
3954 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
3955 CSR_WRITE_4(sc, ALC_CLK_GATING_CFG, CLK_GATING_DMAW_ENB |
3956 CLK_GATING_DMAR_ENB | CLK_GATING_TXQ_ENB |
3957 CLK_GATING_RXQ_ENB | CLK_GATING_TXMAC_ENB |
3958 CLK_GATING_RXMAC_ENB);
3959 if (AR816X_REV(sc->alc_rev) >= AR816X_REV_B0)
3960 CSR_WRITE_4(sc, ALC_IDLE_DECISN_TIMER,
3961 IDLE_DECISN_TIMER_DEFAULT_1MS);
3963 CSR_WRITE_4(sc, ALC_CLK_GATING_CFG, 0);
3965 /* Reprogram the station address. */
3966 bcopy(IF_LLADDR(ifp), eaddr, ETHER_ADDR_LEN);
3967 CSR_WRITE_4(sc, ALC_PAR0,
3968 eaddr[2] << 24 | eaddr[3] << 16 | eaddr[4] << 8 | eaddr[5]);
3969 CSR_WRITE_4(sc, ALC_PAR1, eaddr[0] << 8 | eaddr[1]);
3971 * Clear WOL status and disable all WOL feature as WOL
3972 * would interfere Rx operation under normal environments.
3974 CSR_READ_4(sc, ALC_WOL_CFG);
3975 CSR_WRITE_4(sc, ALC_WOL_CFG, 0);
3976 /* Set Tx descriptor base addresses. */
3977 paddr = sc->alc_rdata.alc_tx_ring_paddr;
3978 CSR_WRITE_4(sc, ALC_TX_BASE_ADDR_HI, ALC_ADDR_HI(paddr));
3979 CSR_WRITE_4(sc, ALC_TDL_HEAD_ADDR_LO, ALC_ADDR_LO(paddr));
3980 /* We don't use high priority ring. */
3981 CSR_WRITE_4(sc, ALC_TDH_HEAD_ADDR_LO, 0);
3982 /* Set Tx descriptor counter. */
3983 CSR_WRITE_4(sc, ALC_TD_RING_CNT,
3984 (ALC_TX_RING_CNT << TD_RING_CNT_SHIFT) & TD_RING_CNT_MASK);
3985 /* Set Rx descriptor base addresses. */
3986 paddr = sc->alc_rdata.alc_rx_ring_paddr;
3987 CSR_WRITE_4(sc, ALC_RX_BASE_ADDR_HI, ALC_ADDR_HI(paddr));
3988 CSR_WRITE_4(sc, ALC_RD0_HEAD_ADDR_LO, ALC_ADDR_LO(paddr));
3989 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
3990 /* We use one Rx ring. */
3991 CSR_WRITE_4(sc, ALC_RD1_HEAD_ADDR_LO, 0);
3992 CSR_WRITE_4(sc, ALC_RD2_HEAD_ADDR_LO, 0);
3993 CSR_WRITE_4(sc, ALC_RD3_HEAD_ADDR_LO, 0);
3995 /* Set Rx descriptor counter. */
3996 CSR_WRITE_4(sc, ALC_RD_RING_CNT,
3997 (ALC_RX_RING_CNT << RD_RING_CNT_SHIFT) & RD_RING_CNT_MASK);
4000 * Let hardware split jumbo frames into alc_max_buf_sized chunks.
4001 * if it do not fit the buffer size. Rx return descriptor holds
4002 * a counter that indicates how many fragments were made by the
4003 * hardware. The buffer size should be multiple of 8 bytes.
4004 * Since hardware has limit on the size of buffer size, always
4005 * use the maximum value.
4006 * For strict-alignment architectures make sure to reduce buffer
4007 * size by 8 bytes to make room for alignment fixup.
4009 #ifndef __NO_STRICT_ALIGNMENT
4010 sc->alc_buf_size = RX_BUF_SIZE_MAX - sizeof(uint64_t);
4012 sc->alc_buf_size = RX_BUF_SIZE_MAX;
4014 CSR_WRITE_4(sc, ALC_RX_BUF_SIZE, sc->alc_buf_size);
4016 paddr = sc->alc_rdata.alc_rr_ring_paddr;
4017 /* Set Rx return descriptor base addresses. */
4018 CSR_WRITE_4(sc, ALC_RRD0_HEAD_ADDR_LO, ALC_ADDR_LO(paddr));
4019 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
4020 /* We use one Rx return ring. */
4021 CSR_WRITE_4(sc, ALC_RRD1_HEAD_ADDR_LO, 0);
4022 CSR_WRITE_4(sc, ALC_RRD2_HEAD_ADDR_LO, 0);
4023 CSR_WRITE_4(sc, ALC_RRD3_HEAD_ADDR_LO, 0);
4025 /* Set Rx return descriptor counter. */
4026 CSR_WRITE_4(sc, ALC_RRD_RING_CNT,
4027 (ALC_RR_RING_CNT << RRD_RING_CNT_SHIFT) & RRD_RING_CNT_MASK);
4028 paddr = sc->alc_rdata.alc_cmb_paddr;
4029 CSR_WRITE_4(sc, ALC_CMB_BASE_ADDR_LO, ALC_ADDR_LO(paddr));
4030 paddr = sc->alc_rdata.alc_smb_paddr;
4031 CSR_WRITE_4(sc, ALC_SMB_BASE_ADDR_HI, ALC_ADDR_HI(paddr));
4032 CSR_WRITE_4(sc, ALC_SMB_BASE_ADDR_LO, ALC_ADDR_LO(paddr));
4034 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B) {
4035 /* Reconfigure SRAM - Vendor magic. */
4036 CSR_WRITE_4(sc, ALC_SRAM_RX_FIFO_LEN, 0x000002A0);
4037 CSR_WRITE_4(sc, ALC_SRAM_TX_FIFO_LEN, 0x00000100);
4038 CSR_WRITE_4(sc, ALC_SRAM_RX_FIFO_ADDR, 0x029F0000);
4039 CSR_WRITE_4(sc, ALC_SRAM_RD0_ADDR, 0x02BF02A0);
4040 CSR_WRITE_4(sc, ALC_SRAM_TX_FIFO_ADDR, 0x03BF02C0);
4041 CSR_WRITE_4(sc, ALC_SRAM_TD_ADDR, 0x03DF03C0);
4042 CSR_WRITE_4(sc, ALC_TXF_WATER_MARK, 0x00000000);
4043 CSR_WRITE_4(sc, ALC_RD_DMA_CFG, 0x00000000);
4046 /* Tell hardware that we're ready to load DMA blocks. */
4047 CSR_WRITE_4(sc, ALC_DMA_BLOCK, DMA_BLOCK_LOAD);
4049 /* Configure interrupt moderation timer. */
4050 reg = ALC_USECS(sc->alc_int_rx_mod) << IM_TIMER_RX_SHIFT;
4051 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0)
4052 reg |= ALC_USECS(sc->alc_int_tx_mod) << IM_TIMER_TX_SHIFT;
4053 CSR_WRITE_4(sc, ALC_IM_TIMER, reg);
4055 * We don't want to automatic interrupt clear as task queue
4056 * for the interrupt should know interrupt status.
4058 reg = CSR_READ_4(sc, ALC_MASTER_CFG);
4059 reg &= ~(MASTER_IM_RX_TIMER_ENB | MASTER_IM_TX_TIMER_ENB);
4060 reg |= MASTER_SA_TIMER_ENB;
4061 if (ALC_USECS(sc->alc_int_rx_mod) != 0)
4062 reg |= MASTER_IM_RX_TIMER_ENB;
4063 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0 &&
4064 ALC_USECS(sc->alc_int_tx_mod) != 0)
4065 reg |= MASTER_IM_TX_TIMER_ENB;
4066 CSR_WRITE_4(sc, ALC_MASTER_CFG, reg);
4068 * Disable interrupt re-trigger timer. We don't want automatic
4069 * re-triggering of un-ACKed interrupts.
4071 CSR_WRITE_4(sc, ALC_INTR_RETRIG_TIMER, ALC_USECS(0));
4072 /* Configure CMB. */
4073 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
4074 CSR_WRITE_4(sc, ALC_CMB_TD_THRESH, ALC_TX_RING_CNT / 3);
4075 CSR_WRITE_4(sc, ALC_CMB_TX_TIMER,
4076 ALC_USECS(sc->alc_int_tx_mod));
4078 if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0) {
4079 CSR_WRITE_4(sc, ALC_CMB_TD_THRESH, 4);
4080 CSR_WRITE_4(sc, ALC_CMB_TX_TIMER, ALC_USECS(5000));
4082 CSR_WRITE_4(sc, ALC_CMB_TX_TIMER, ALC_USECS(0));
4085 * Hardware can be configured to issue SMB interrupt based
4086 * on programmed interval. Since there is a callout that is
4087 * invoked for every hz in driver we use that instead of
4088 * relying on periodic SMB interrupt.
4090 CSR_WRITE_4(sc, ALC_SMB_STAT_TIMER, ALC_USECS(0));
4091 /* Clear MAC statistics. */
4092 alc_stats_clear(sc);
4095 * Always use maximum frame size that controller can support.
4096 * Otherwise received frames that has larger frame length
4097 * than alc(4) MTU would be silently dropped in hardware. This
4098 * would make path-MTU discovery hard as sender wouldn't get
4099 * any responses from receiver. alc(4) supports
4100 * multi-fragmented frames on Rx path so it has no issue on
4101 * assembling fragmented frames. Using maximum frame size also
4102 * removes the need to reinitialize hardware when interface
4103 * MTU configuration was changed.
4105 * Be conservative in what you do, be liberal in what you
4106 * accept from others - RFC 793.
4108 CSR_WRITE_4(sc, ALC_FRAME_SIZE, sc->alc_ident->max_framelen);
4110 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
4111 /* Disable header split(?) */
4112 CSR_WRITE_4(sc, ALC_HDS_CFG, 0);
4114 /* Configure IPG/IFG parameters. */
4115 CSR_WRITE_4(sc, ALC_IPG_IFG_CFG,
4116 ((IPG_IFG_IPGT_DEFAULT << IPG_IFG_IPGT_SHIFT) &
4117 IPG_IFG_IPGT_MASK) |
4118 ((IPG_IFG_MIFG_DEFAULT << IPG_IFG_MIFG_SHIFT) &
4119 IPG_IFG_MIFG_MASK) |
4120 ((IPG_IFG_IPG1_DEFAULT << IPG_IFG_IPG1_SHIFT) &
4121 IPG_IFG_IPG1_MASK) |
4122 ((IPG_IFG_IPG2_DEFAULT << IPG_IFG_IPG2_SHIFT) &
4123 IPG_IFG_IPG2_MASK));
4124 /* Set parameters for half-duplex media. */
4125 CSR_WRITE_4(sc, ALC_HDPX_CFG,
4126 ((HDPX_CFG_LCOL_DEFAULT << HDPX_CFG_LCOL_SHIFT) &
4127 HDPX_CFG_LCOL_MASK) |
4128 ((HDPX_CFG_RETRY_DEFAULT << HDPX_CFG_RETRY_SHIFT) &
4129 HDPX_CFG_RETRY_MASK) | HDPX_CFG_EXC_DEF_EN |
4130 ((HDPX_CFG_ABEBT_DEFAULT << HDPX_CFG_ABEBT_SHIFT) &
4131 HDPX_CFG_ABEBT_MASK) |
4132 ((HDPX_CFG_JAMIPG_DEFAULT << HDPX_CFG_JAMIPG_SHIFT) &
4133 HDPX_CFG_JAMIPG_MASK));
4137 * Set TSO/checksum offload threshold. For frames that is
4138 * larger than this threshold, hardware wouldn't do
4139 * TSO/checksum offloading.
4141 reg = (sc->alc_ident->max_framelen >> TSO_OFFLOAD_THRESH_UNIT_SHIFT) &
4142 TSO_OFFLOAD_THRESH_MASK;
4143 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
4144 reg |= TSO_OFFLOAD_ERRLGPKT_DROP_ENB;
4145 CSR_WRITE_4(sc, ALC_TSO_OFFLOAD_THRESH, reg);
4146 /* Configure TxQ. */
4147 reg = (alc_dma_burst[sc->alc_dma_rd_burst] <<
4148 TXQ_CFG_TX_FIFO_BURST_SHIFT) & TXQ_CFG_TX_FIFO_BURST_MASK;
4149 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B ||
4150 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2)
4152 reg |= (TXQ_CFG_TD_BURST_DEFAULT << TXQ_CFG_TD_BURST_SHIFT) &
4153 TXQ_CFG_TD_BURST_MASK;
4154 reg |= TXQ_CFG_IP_OPTION_ENB | TXQ_CFG_8023_ENB;
4155 CSR_WRITE_4(sc, ALC_TXQ_CFG, reg | TXQ_CFG_ENHANCED_MODE);
4156 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
4157 reg = (TXQ_CFG_TD_BURST_DEFAULT << HQTD_CFG_Q1_BURST_SHIFT |
4158 TXQ_CFG_TD_BURST_DEFAULT << HQTD_CFG_Q2_BURST_SHIFT |
4159 TXQ_CFG_TD_BURST_DEFAULT << HQTD_CFG_Q3_BURST_SHIFT |
4160 HQTD_CFG_BURST_ENB);
4161 CSR_WRITE_4(sc, ALC_HQTD_CFG, reg);
4162 reg = WRR_PRI_RESTRICT_NONE;
4163 reg |= (WRR_PRI_DEFAULT << WRR_PRI0_SHIFT |
4164 WRR_PRI_DEFAULT << WRR_PRI1_SHIFT |
4165 WRR_PRI_DEFAULT << WRR_PRI2_SHIFT |
4166 WRR_PRI_DEFAULT << WRR_PRI3_SHIFT);
4167 CSR_WRITE_4(sc, ALC_WRR, reg);
4169 /* Configure Rx free descriptor pre-fetching. */
4170 CSR_WRITE_4(sc, ALC_RX_RD_FREE_THRESH,
4171 ((RX_RD_FREE_THRESH_HI_DEFAULT <<
4172 RX_RD_FREE_THRESH_HI_SHIFT) & RX_RD_FREE_THRESH_HI_MASK) |
4173 ((RX_RD_FREE_THRESH_LO_DEFAULT <<
4174 RX_RD_FREE_THRESH_LO_SHIFT) & RX_RD_FREE_THRESH_LO_MASK));
4178 * Configure flow control parameters.
4179 * XON : 80% of Rx FIFO
4180 * XOFF : 30% of Rx FIFO
4182 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
4183 reg = CSR_READ_4(sc, ALC_SRAM_RX_FIFO_LEN);
4184 reg &= SRAM_RX_FIFO_LEN_MASK;
4187 reg -= RX_FIFO_PAUSE_816X_RSVD;
4189 reg -= RX_BUF_SIZE_MAX;
4191 CSR_WRITE_4(sc, ALC_RX_FIFO_PAUSE_THRESH,
4192 ((reg << RX_FIFO_PAUSE_THRESH_LO_SHIFT) &
4193 RX_FIFO_PAUSE_THRESH_LO_MASK) |
4194 (((RX_FIFO_PAUSE_816X_RSVD / 8) <<
4195 RX_FIFO_PAUSE_THRESH_HI_SHIFT) &
4196 RX_FIFO_PAUSE_THRESH_HI_MASK));
4197 } else if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8131 ||
4198 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8132) {
4199 reg = CSR_READ_4(sc, ALC_SRAM_RX_FIFO_LEN);
4200 rxf_hi = (reg * 8) / 10;
4201 rxf_lo = (reg * 3) / 10;
4202 CSR_WRITE_4(sc, ALC_RX_FIFO_PAUSE_THRESH,
4203 ((rxf_lo << RX_FIFO_PAUSE_THRESH_LO_SHIFT) &
4204 RX_FIFO_PAUSE_THRESH_LO_MASK) |
4205 ((rxf_hi << RX_FIFO_PAUSE_THRESH_HI_SHIFT) &
4206 RX_FIFO_PAUSE_THRESH_HI_MASK));
4209 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
4210 /* Disable RSS until I understand L1C/L2C's RSS logic. */
4211 CSR_WRITE_4(sc, ALC_RSS_IDT_TABLE0, 0);
4212 CSR_WRITE_4(sc, ALC_RSS_CPU, 0);
4215 /* Configure RxQ. */
4216 reg = (RXQ_CFG_RD_BURST_DEFAULT << RXQ_CFG_RD_BURST_SHIFT) &
4217 RXQ_CFG_RD_BURST_MASK;
4218 reg |= RXQ_CFG_RSS_MODE_DIS;
4219 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
4220 reg |= (RXQ_CFG_816X_IDT_TBL_SIZE_DEFAULT <<
4221 RXQ_CFG_816X_IDT_TBL_SIZE_SHIFT) &
4222 RXQ_CFG_816X_IDT_TBL_SIZE_MASK;
4223 if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0)
4224 reg |= RXQ_CFG_ASPM_THROUGHPUT_LIMIT_100M;
4226 if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0 &&
4227 sc->alc_ident->deviceid != DEVICEID_ATHEROS_AR8151_V2)
4228 reg |= RXQ_CFG_ASPM_THROUGHPUT_LIMIT_100M;
4230 CSR_WRITE_4(sc, ALC_RXQ_CFG, reg);
4232 /* Configure DMA parameters. */
4233 reg = DMA_CFG_OUT_ORDER | DMA_CFG_RD_REQ_PRI;
4235 if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0)
4236 reg |= DMA_CFG_CMB_ENB;
4237 if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0)
4238 reg |= DMA_CFG_SMB_ENB;
4240 reg |= DMA_CFG_SMB_DIS;
4241 reg |= (sc->alc_dma_rd_burst & DMA_CFG_RD_BURST_MASK) <<
4242 DMA_CFG_RD_BURST_SHIFT;
4243 reg |= (sc->alc_dma_wr_burst & DMA_CFG_WR_BURST_MASK) <<
4244 DMA_CFG_WR_BURST_SHIFT;
4245 reg |= (DMA_CFG_RD_DELAY_CNT_DEFAULT << DMA_CFG_RD_DELAY_CNT_SHIFT) &
4246 DMA_CFG_RD_DELAY_CNT_MASK;
4247 reg |= (DMA_CFG_WR_DELAY_CNT_DEFAULT << DMA_CFG_WR_DELAY_CNT_SHIFT) &
4248 DMA_CFG_WR_DELAY_CNT_MASK;
4249 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
4250 switch (AR816X_REV(sc->alc_rev)) {
4253 reg |= DMA_CFG_RD_CHNL_SEL_2;
4258 reg |= DMA_CFG_RD_CHNL_SEL_4;
4262 CSR_WRITE_4(sc, ALC_DMA_CFG, reg);
4265 * Configure Tx/Rx MACs.
4266 * - Auto-padding for short frames.
4267 * - Enable CRC generation.
4268 * Actual reconfiguration of MAC for resolved speed/duplex
4269 * is followed after detection of link establishment.
4270 * AR813x/AR815x always does checksum computation regardless
4271 * of MAC_CFG_RXCSUM_ENB bit. Also the controller is known to
4272 * have bug in protocol field in Rx return structure so
4273 * these controllers can't handle fragmented frames. Disable
4274 * Rx checksum offloading until there is a newer controller
4275 * that has sane implementation.
4277 reg = MAC_CFG_TX_CRC_ENB | MAC_CFG_TX_AUTO_PAD | MAC_CFG_FULL_DUPLEX |
4278 ((MAC_CFG_PREAMBLE_DEFAULT << MAC_CFG_PREAMBLE_SHIFT) &
4279 MAC_CFG_PREAMBLE_MASK);
4280 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0 ||
4281 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151 ||
4282 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2 ||
4283 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2)
4284 reg |= MAC_CFG_HASH_ALG_CRC32 | MAC_CFG_SPEED_MODE_SW;
4285 if ((sc->alc_flags & ALC_FLAG_FASTETHER) != 0)
4286 reg |= MAC_CFG_SPEED_10_100;
4288 reg |= MAC_CFG_SPEED_1000;
4289 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
4291 /* Set up the receive filter. */
4295 /* Acknowledge all pending interrupts and clear it. */
4296 CSR_WRITE_4(sc, ALC_INTR_MASK, ALC_INTRS);
4297 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0xFFFFFFFF);
4298 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0);
4300 ifp->if_drv_flags |= IFF_DRV_RUNNING;
4301 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
4303 sc->alc_flags &= ~ALC_FLAG_LINK;
4304 /* Switch to the current media. */
4305 alc_mediachange_locked(sc);
4307 callout_reset(&sc->alc_tick_ch, hz, alc_tick, sc);
4311 alc_stop(struct alc_softc *sc)
4314 struct alc_txdesc *txd;
4315 struct alc_rxdesc *rxd;
4319 ALC_LOCK_ASSERT(sc);
4321 * Mark the interface down and cancel the watchdog timer.
4324 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
4325 sc->alc_flags &= ~ALC_FLAG_LINK;
4326 callout_stop(&sc->alc_tick_ch);
4327 sc->alc_watchdog_timer = 0;
4328 alc_stats_update(sc);
4329 /* Disable interrupts. */
4330 CSR_WRITE_4(sc, ALC_INTR_MASK, 0);
4331 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0xFFFFFFFF);
4333 reg = CSR_READ_4(sc, ALC_DMA_CFG);
4334 reg &= ~(DMA_CFG_CMB_ENB | DMA_CFG_SMB_ENB);
4335 reg |= DMA_CFG_SMB_DIS;
4336 CSR_WRITE_4(sc, ALC_DMA_CFG, reg);
4338 /* Stop Rx/Tx MACs. */
4340 /* Disable interrupts which might be touched in taskq handler. */
4341 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0xFFFFFFFF);
4342 /* Disable L0s/L1s */
4343 alc_aspm(sc, 0, IFM_UNKNOWN);
4344 /* Reclaim Rx buffers that have been processed. */
4345 if (sc->alc_cdata.alc_rxhead != NULL)
4346 m_freem(sc->alc_cdata.alc_rxhead);
4347 ALC_RXCHAIN_RESET(sc);
4349 * Free Tx/Rx mbufs still in the queues.
4351 for (i = 0; i < ALC_RX_RING_CNT; i++) {
4352 rxd = &sc->alc_cdata.alc_rxdesc[i];
4353 if (rxd->rx_m != NULL) {
4354 bus_dmamap_sync(sc->alc_cdata.alc_rx_tag,
4355 rxd->rx_dmamap, BUS_DMASYNC_POSTREAD);
4356 bus_dmamap_unload(sc->alc_cdata.alc_rx_tag,
4362 for (i = 0; i < ALC_TX_RING_CNT; i++) {
4363 txd = &sc->alc_cdata.alc_txdesc[i];
4364 if (txd->tx_m != NULL) {
4365 bus_dmamap_sync(sc->alc_cdata.alc_tx_tag,
4366 txd->tx_dmamap, BUS_DMASYNC_POSTWRITE);
4367 bus_dmamap_unload(sc->alc_cdata.alc_tx_tag,
4376 alc_stop_mac(struct alc_softc *sc)
4382 /* Disable Rx/Tx MAC. */
4383 reg = CSR_READ_4(sc, ALC_MAC_CFG);
4384 if ((reg & (MAC_CFG_TX_ENB | MAC_CFG_RX_ENB)) != 0) {
4385 reg &= ~(MAC_CFG_TX_ENB | MAC_CFG_RX_ENB);
4386 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
4388 for (i = ALC_TIMEOUT; i > 0; i--) {
4389 reg = CSR_READ_4(sc, ALC_IDLE_STATUS);
4390 if ((reg & (IDLE_STATUS_RXMAC | IDLE_STATUS_TXMAC)) == 0)
4395 device_printf(sc->alc_dev,
4396 "could not disable Rx/Tx MAC(0x%08x)!\n", reg);
4400 alc_start_queue(struct alc_softc *sc)
4405 RXQ_CFG_QUEUE0_ENB | RXQ_CFG_QUEUE1_ENB,
4406 RXQ_CFG_QUEUE0_ENB | RXQ_CFG_QUEUE1_ENB | RXQ_CFG_QUEUE2_ENB,
4411 ALC_LOCK_ASSERT(sc);
4414 cfg = CSR_READ_4(sc, ALC_RXQ_CFG);
4415 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
4416 cfg &= ~RXQ_CFG_ENB;
4419 cfg |= RXQ_CFG_QUEUE0_ENB;
4420 CSR_WRITE_4(sc, ALC_RXQ_CFG, cfg);
4422 cfg = CSR_READ_4(sc, ALC_TXQ_CFG);
4424 CSR_WRITE_4(sc, ALC_TXQ_CFG, cfg);
4428 alc_stop_queue(struct alc_softc *sc)
4434 reg = CSR_READ_4(sc, ALC_RXQ_CFG);
4435 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
4436 if ((reg & RXQ_CFG_ENB) != 0) {
4437 reg &= ~RXQ_CFG_ENB;
4438 CSR_WRITE_4(sc, ALC_RXQ_CFG, reg);
4441 if ((reg & RXQ_CFG_QUEUE0_ENB) != 0) {
4442 reg &= ~RXQ_CFG_QUEUE0_ENB;
4443 CSR_WRITE_4(sc, ALC_RXQ_CFG, reg);
4447 reg = CSR_READ_4(sc, ALC_TXQ_CFG);
4448 if ((reg & TXQ_CFG_ENB) != 0) {
4449 reg &= ~TXQ_CFG_ENB;
4450 CSR_WRITE_4(sc, ALC_TXQ_CFG, reg);
4453 for (i = ALC_TIMEOUT; i > 0; i--) {
4454 reg = CSR_READ_4(sc, ALC_IDLE_STATUS);
4455 if ((reg & (IDLE_STATUS_RXQ | IDLE_STATUS_TXQ)) == 0)
4460 device_printf(sc->alc_dev,
4461 "could not disable RxQ/TxQ (0x%08x)!\n", reg);
4465 alc_init_tx_ring(struct alc_softc *sc)
4467 struct alc_ring_data *rd;
4468 struct alc_txdesc *txd;
4471 ALC_LOCK_ASSERT(sc);
4473 sc->alc_cdata.alc_tx_prod = 0;
4474 sc->alc_cdata.alc_tx_cons = 0;
4475 sc->alc_cdata.alc_tx_cnt = 0;
4477 rd = &sc->alc_rdata;
4478 bzero(rd->alc_tx_ring, ALC_TX_RING_SZ);
4479 for (i = 0; i < ALC_TX_RING_CNT; i++) {
4480 txd = &sc->alc_cdata.alc_txdesc[i];
4484 bus_dmamap_sync(sc->alc_cdata.alc_tx_ring_tag,
4485 sc->alc_cdata.alc_tx_ring_map, BUS_DMASYNC_PREWRITE);
4489 alc_init_rx_ring(struct alc_softc *sc)
4491 struct alc_ring_data *rd;
4492 struct alc_rxdesc *rxd;
4495 ALC_LOCK_ASSERT(sc);
4497 sc->alc_cdata.alc_rx_cons = ALC_RX_RING_CNT - 1;
4498 sc->alc_morework = 0;
4499 rd = &sc->alc_rdata;
4500 bzero(rd->alc_rx_ring, ALC_RX_RING_SZ);
4501 for (i = 0; i < ALC_RX_RING_CNT; i++) {
4502 rxd = &sc->alc_cdata.alc_rxdesc[i];
4504 rxd->rx_desc = &rd->alc_rx_ring[i];
4505 if (alc_newbuf(sc, rxd) != 0)
4510 * Since controller does not update Rx descriptors, driver
4511 * does have to read Rx descriptors back so BUS_DMASYNC_PREWRITE
4512 * is enough to ensure coherence.
4514 bus_dmamap_sync(sc->alc_cdata.alc_rx_ring_tag,
4515 sc->alc_cdata.alc_rx_ring_map, BUS_DMASYNC_PREWRITE);
4516 /* Let controller know availability of new Rx buffers. */
4517 CSR_WRITE_4(sc, ALC_MBOX_RD0_PROD_IDX, sc->alc_cdata.alc_rx_cons);
4523 alc_init_rr_ring(struct alc_softc *sc)
4525 struct alc_ring_data *rd;
4527 ALC_LOCK_ASSERT(sc);
4529 sc->alc_cdata.alc_rr_cons = 0;
4530 ALC_RXCHAIN_RESET(sc);
4532 rd = &sc->alc_rdata;
4533 bzero(rd->alc_rr_ring, ALC_RR_RING_SZ);
4534 bus_dmamap_sync(sc->alc_cdata.alc_rr_ring_tag,
4535 sc->alc_cdata.alc_rr_ring_map,
4536 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
4540 alc_init_cmb(struct alc_softc *sc)
4542 struct alc_ring_data *rd;
4544 ALC_LOCK_ASSERT(sc);
4546 rd = &sc->alc_rdata;
4547 bzero(rd->alc_cmb, ALC_CMB_SZ);
4548 bus_dmamap_sync(sc->alc_cdata.alc_cmb_tag, sc->alc_cdata.alc_cmb_map,
4549 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
4553 alc_init_smb(struct alc_softc *sc)
4555 struct alc_ring_data *rd;
4557 ALC_LOCK_ASSERT(sc);
4559 rd = &sc->alc_rdata;
4560 bzero(rd->alc_smb, ALC_SMB_SZ);
4561 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag, sc->alc_cdata.alc_smb_map,
4562 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
4566 alc_rxvlan(struct alc_softc *sc)
4571 ALC_LOCK_ASSERT(sc);
4574 reg = CSR_READ_4(sc, ALC_MAC_CFG);
4575 if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) != 0)
4576 reg |= MAC_CFG_VLAN_TAG_STRIP;
4578 reg &= ~MAC_CFG_VLAN_TAG_STRIP;
4579 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
4583 alc_rxfilter(struct alc_softc *sc)
4586 struct ifmultiaddr *ifma;
4591 ALC_LOCK_ASSERT(sc);
4595 bzero(mchash, sizeof(mchash));
4596 rxcfg = CSR_READ_4(sc, ALC_MAC_CFG);
4597 rxcfg &= ~(MAC_CFG_ALLMULTI | MAC_CFG_BCAST | MAC_CFG_PROMISC);
4598 if ((ifp->if_flags & IFF_BROADCAST) != 0)
4599 rxcfg |= MAC_CFG_BCAST;
4600 if ((ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI)) != 0) {
4601 if ((ifp->if_flags & IFF_PROMISC) != 0)
4602 rxcfg |= MAC_CFG_PROMISC;
4603 if ((ifp->if_flags & IFF_ALLMULTI) != 0)
4604 rxcfg |= MAC_CFG_ALLMULTI;
4605 mchash[0] = 0xFFFFFFFF;
4606 mchash[1] = 0xFFFFFFFF;
4610 if_maddr_rlock(ifp);
4611 TAILQ_FOREACH(ifma, &sc->alc_ifp->if_multiaddrs, ifma_link) {
4612 if (ifma->ifma_addr->sa_family != AF_LINK)
4614 crc = ether_crc32_be(LLADDR((struct sockaddr_dl *)
4615 ifma->ifma_addr), ETHER_ADDR_LEN);
4616 mchash[crc >> 31] |= 1 << ((crc >> 26) & 0x1f);
4618 if_maddr_runlock(ifp);
4621 CSR_WRITE_4(sc, ALC_MAR0, mchash[0]);
4622 CSR_WRITE_4(sc, ALC_MAR1, mchash[1]);
4623 CSR_WRITE_4(sc, ALC_MAC_CFG, rxcfg);
4627 sysctl_int_range(SYSCTL_HANDLER_ARGS, int low, int high)
4633 value = *(int *)arg1;
4634 error = sysctl_handle_int(oidp, &value, 0, req);
4635 if (error || req->newptr == NULL)
4637 if (value < low || value > high)
4639 *(int *)arg1 = value;
4645 sysctl_hw_alc_proc_limit(SYSCTL_HANDLER_ARGS)
4647 return (sysctl_int_range(oidp, arg1, arg2, req,
4648 ALC_PROC_MIN, ALC_PROC_MAX));
4652 sysctl_hw_alc_int_mod(SYSCTL_HANDLER_ARGS)
4655 return (sysctl_int_range(oidp, arg1, arg2, req,
4656 ALC_IM_TIMER_MIN, ALC_IM_TIMER_MAX));
4661 alc_netdump_init(struct ifnet *ifp, int *nrxr, int *ncl, int *clsize)
4663 struct alc_softc *sc;
4665 sc = if_getsoftc(ifp);
4666 KASSERT(sc->alc_buf_size <= MCLBYTES, ("incorrect cluster size"));
4668 *nrxr = ALC_RX_RING_CNT;
4669 *ncl = NETDUMP_MAX_IN_FLIGHT;
4674 alc_netdump_event(struct ifnet *ifp __unused, enum netdump_ev event __unused)
4679 alc_netdump_transmit(struct ifnet *ifp, struct mbuf *m)
4681 struct alc_softc *sc;
4684 sc = if_getsoftc(ifp);
4685 if ((if_getdrvflags(ifp) & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) !=
4689 error = alc_encap(sc, &m);
4696 alc_netdump_poll(struct ifnet *ifp, int count)
4698 struct alc_softc *sc;
4700 sc = if_getsoftc(ifp);
4701 if ((if_getdrvflags(ifp) & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) !=
4706 return (alc_rxintr(sc, count));
4708 #endif /* NETDUMP */