2 * Copyright (c) 1997, 1998, 1999
3 * Bill Paul <wpaul@ee.columbia.edu>. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Bill Paul.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
32 * $FreeBSD: src/sys/pci/if_dc.c,v 1.9.2.45 2003/06/08 14:31:53 mux Exp $
33 * $DragonFly: src/sys/dev/netif/dc/if_dc.c,v 1.34 2005/06/14 14:19:22 joerg Exp $
37 * DEC "tulip" clone ethernet driver. Supports the DEC/Intel 21143
38 * series chips and several workalikes including the following:
40 * Macronix 98713/98715/98725/98727/98732 PMAC (www.macronix.com)
41 * Macronix/Lite-On 82c115 PNIC II (www.macronix.com)
42 * Lite-On 82c168/82c169 PNIC (www.litecom.com)
43 * ASIX Electronics AX88140A (www.asix.com.tw)
44 * ASIX Electronics AX88141 (www.asix.com.tw)
45 * ADMtek AL981 (www.admtek.com.tw)
46 * ADMtek AN985 (www.admtek.com.tw)
47 * Davicom DM9100, DM9102, DM9102A (www.davicom8.com)
48 * Accton EN1217 (www.accton.com)
49 * Conexant LANfinity (www.conexant.com)
51 * Datasheets for the 21143 are available at developer.intel.com.
52 * Datasheets for the clone parts can be found at their respective sites.
53 * (Except for the PNIC; see www.freebsd.org/~wpaul/PNIC/pnic.ps.gz.)
54 * The PNIC II is essentially a Macronix 98715A chip; the only difference
55 * worth noting is that its multicast hash table is only 128 bits wide
58 * Written by Bill Paul <wpaul@ee.columbia.edu>
59 * Electrical Engineering Department
60 * Columbia University, New York City
64 * The Intel 21143 is the successor to the DEC 21140. It is basically
65 * the same as the 21140 but with a few new features. The 21143 supports
66 * three kinds of media attachments:
68 * o MII port, for 10Mbps and 100Mbps support and NWAY
69 * autonegotiation provided by an external PHY.
70 * o SYM port, for symbol mode 100Mbps support.
74 * The 100Mbps SYM port and 10baseT port can be used together in
75 * combination with the internal NWAY support to create a 10/100
76 * autosensing configuration.
78 * Note that not all tulip workalikes are handled in this driver: we only
79 * deal with those which are relatively well behaved. The Winbond is
80 * handled separately due to its different register offsets and the
81 * special handling needed for its various bugs. The PNIC is handled
82 * here, but I'm not thrilled about it.
84 * All of the workalike chips use some form of MII transceiver support
85 * with the exception of the Macronix chips, which also have a SYM port.
86 * The ASIX AX88140A is also documented to have a SYM port, but all
87 * the cards I've seen use an MII transceiver, probably because the
88 * AX88140A doesn't support internal NWAY.
91 #include <sys/param.h>
92 #include <sys/systm.h>
93 #include <sys/sockio.h>
95 #include <sys/malloc.h>
96 #include <sys/kernel.h>
97 #include <sys/socket.h>
98 #include <sys/sysctl.h>
99 #include <sys/thread2.h>
102 #include <net/ifq_var.h>
103 #include <net/if_arp.h>
104 #include <net/ethernet.h>
105 #include <net/if_dl.h>
106 #include <net/if_media.h>
107 #include <net/if_types.h>
108 #include <net/vlan/if_vlan_var.h>
112 #include <vm/vm.h> /* for vtophys */
113 #include <vm/pmap.h> /* for vtophys */
114 #include <machine/bus_pio.h>
115 #include <machine/bus_memio.h>
116 #include <machine/bus.h>
117 #include <machine/resource.h>
119 #include <sys/rman.h>
121 #include "../mii_layer/mii.h"
122 #include "../mii_layer/miivar.h"
124 #include <bus/pci/pcireg.h>
125 #include <bus/pci/pcivar.h>
127 #define DC_USEIOSPACE
129 #include "if_dcreg.h"
131 /* "controller miibus0" required. See GENERIC if you get errors here. */
132 #include "miibus_if.h"
135 * Various supported device vendors/types and their names.
137 static struct dc_type dc_devs[] = {
138 { DC_VENDORID_DEC, DC_DEVICEID_21143,
139 "Intel 21143 10/100BaseTX" },
140 { DC_VENDORID_DAVICOM, DC_DEVICEID_DM9009,
141 "Davicom DM9009 10/100BaseTX" },
142 { DC_VENDORID_DAVICOM, DC_DEVICEID_DM9100,
143 "Davicom DM9100 10/100BaseTX" },
144 { DC_VENDORID_DAVICOM, DC_DEVICEID_DM9102,
145 "Davicom DM9102 10/100BaseTX" },
146 { DC_VENDORID_DAVICOM, DC_DEVICEID_DM9102,
147 "Davicom DM9102A 10/100BaseTX" },
148 { DC_VENDORID_ADMTEK, DC_DEVICEID_AL981,
149 "ADMtek AL981 10/100BaseTX" },
150 { DC_VENDORID_ADMTEK, DC_DEVICEID_AN985,
151 "ADMtek AN985 10/100BaseTX" },
152 { DC_VENDORID_ASIX, DC_DEVICEID_AX88140A,
153 "ASIX AX88140A 10/100BaseTX" },
154 { DC_VENDORID_ASIX, DC_DEVICEID_AX88140A,
155 "ASIX AX88141 10/100BaseTX" },
156 { DC_VENDORID_MX, DC_DEVICEID_98713,
157 "Macronix 98713 10/100BaseTX" },
158 { DC_VENDORID_MX, DC_DEVICEID_98713,
159 "Macronix 98713A 10/100BaseTX" },
160 { DC_VENDORID_CP, DC_DEVICEID_98713_CP,
161 "Compex RL100-TX 10/100BaseTX" },
162 { DC_VENDORID_CP, DC_DEVICEID_98713_CP,
163 "Compex RL100-TX 10/100BaseTX" },
164 { DC_VENDORID_MX, DC_DEVICEID_987x5,
165 "Macronix 98715/98715A 10/100BaseTX" },
166 { DC_VENDORID_MX, DC_DEVICEID_987x5,
167 "Macronix 98715AEC-C 10/100BaseTX" },
168 { DC_VENDORID_MX, DC_DEVICEID_987x5,
169 "Macronix 98725 10/100BaseTX" },
170 { DC_VENDORID_MX, DC_DEVICEID_98727,
171 "Macronix 98727/98732 10/100BaseTX" },
172 { DC_VENDORID_LO, DC_DEVICEID_82C115,
173 "LC82C115 PNIC II 10/100BaseTX" },
174 { DC_VENDORID_LO, DC_DEVICEID_82C168,
175 "82c168 PNIC 10/100BaseTX" },
176 { DC_VENDORID_LO, DC_DEVICEID_82C168,
177 "82c169 PNIC 10/100BaseTX" },
178 { DC_VENDORID_ACCTON, DC_DEVICEID_EN1217,
179 "Accton EN1217 10/100BaseTX" },
180 { DC_VENDORID_ACCTON, DC_DEVICEID_EN2242,
181 "Accton EN2242 MiniPCI 10/100BaseTX" },
182 { DC_VENDORID_CONEXANT, DC_DEVICEID_RS7112,
183 "Conexant LANfinity MiniPCI 10/100BaseTX" },
184 { DC_VENDORID_3COM, DC_DEVICEID_3CSOHOB,
185 "3Com OfficeConnect 10/100B" },
189 static int dc_probe (device_t);
190 static int dc_attach (device_t);
191 static int dc_detach (device_t);
192 static int dc_suspend (device_t);
193 static int dc_resume (device_t);
194 static void dc_acpi (device_t);
195 static struct dc_type *dc_devtype (device_t);
196 static int dc_newbuf (struct dc_softc *, int, struct mbuf *);
197 static int dc_encap (struct dc_softc *, struct mbuf *,
199 static void dc_pnic_rx_bug_war (struct dc_softc *, int);
200 static int dc_rx_resync (struct dc_softc *);
201 static void dc_rxeof (struct dc_softc *);
202 static void dc_txeof (struct dc_softc *);
203 static void dc_tick (void *);
204 static void dc_tx_underrun (struct dc_softc *);
205 static void dc_intr (void *);
206 static void dc_start (struct ifnet *);
207 static int dc_ioctl (struct ifnet *, u_long, caddr_t,
209 #ifdef DEVICE_POLLING
210 static void dc_poll (struct ifnet *ifp, enum poll_cmd cmd,
213 static void dc_init (void *);
214 static void dc_stop (struct dc_softc *);
215 static void dc_watchdog (struct ifnet *);
216 static void dc_shutdown (device_t);
217 static int dc_ifmedia_upd (struct ifnet *);
218 static void dc_ifmedia_sts (struct ifnet *, struct ifmediareq *);
220 static void dc_delay (struct dc_softc *);
221 static void dc_eeprom_idle (struct dc_softc *);
222 static void dc_eeprom_putbyte (struct dc_softc *, int);
223 static void dc_eeprom_getword (struct dc_softc *, int, u_int16_t *);
224 static void dc_eeprom_getword_pnic
225 (struct dc_softc *, int, u_int16_t *);
226 static void dc_eeprom_width (struct dc_softc *);
227 static void dc_read_eeprom (struct dc_softc *, caddr_t, int,
230 static void dc_mii_writebit (struct dc_softc *, int);
231 static int dc_mii_readbit (struct dc_softc *);
232 static void dc_mii_sync (struct dc_softc *);
233 static void dc_mii_send (struct dc_softc *, u_int32_t, int);
234 static int dc_mii_readreg (struct dc_softc *, struct dc_mii_frame *);
235 static int dc_mii_writereg (struct dc_softc *, struct dc_mii_frame *);
236 static int dc_miibus_readreg (device_t, int, int);
237 static int dc_miibus_writereg (device_t, int, int, int);
238 static void dc_miibus_statchg (device_t);
239 static void dc_miibus_mediainit (device_t);
241 static u_int32_t dc_crc_mask (struct dc_softc *);
242 static void dc_setcfg (struct dc_softc *, int);
243 static void dc_setfilt_21143 (struct dc_softc *);
244 static void dc_setfilt_asix (struct dc_softc *);
245 static void dc_setfilt_admtek (struct dc_softc *);
247 static void dc_setfilt (struct dc_softc *);
249 static void dc_reset (struct dc_softc *);
250 static int dc_list_rx_init (struct dc_softc *);
251 static int dc_list_tx_init (struct dc_softc *);
253 static void dc_read_srom (struct dc_softc *, int);
254 static void dc_parse_21143_srom (struct dc_softc *);
255 static void dc_decode_leaf_sia (struct dc_softc *,
256 struct dc_eblock_sia *);
257 static void dc_decode_leaf_mii (struct dc_softc *,
258 struct dc_eblock_mii *);
259 static void dc_decode_leaf_sym (struct dc_softc *,
260 struct dc_eblock_sym *);
261 static void dc_apply_fixup (struct dc_softc *, int);
264 #define DC_RES SYS_RES_IOPORT
265 #define DC_RID DC_PCI_CFBIO
267 #define DC_RES SYS_RES_MEMORY
268 #define DC_RID DC_PCI_CFBMA
271 static device_method_t dc_methods[] = {
272 /* Device interface */
273 DEVMETHOD(device_probe, dc_probe),
274 DEVMETHOD(device_attach, dc_attach),
275 DEVMETHOD(device_detach, dc_detach),
276 DEVMETHOD(device_suspend, dc_suspend),
277 DEVMETHOD(device_resume, dc_resume),
278 DEVMETHOD(device_shutdown, dc_shutdown),
281 DEVMETHOD(bus_print_child, bus_generic_print_child),
282 DEVMETHOD(bus_driver_added, bus_generic_driver_added),
285 DEVMETHOD(miibus_readreg, dc_miibus_readreg),
286 DEVMETHOD(miibus_writereg, dc_miibus_writereg),
287 DEVMETHOD(miibus_statchg, dc_miibus_statchg),
288 DEVMETHOD(miibus_mediainit, dc_miibus_mediainit),
293 static driver_t dc_driver = {
296 sizeof(struct dc_softc)
299 static devclass_t dc_devclass;
302 static int dc_quick=1;
303 SYSCTL_INT(_hw, OID_AUTO, dc_quick, CTLFLAG_RW,
304 &dc_quick,0,"do not mdevget in dc driver");
307 DECLARE_DUMMY_MODULE(if_dc);
308 DRIVER_MODULE(if_dc, pci, dc_driver, dc_devclass, 0, 0);
309 DRIVER_MODULE(miibus, dc, miibus_driver, miibus_devclass, 0, 0);
311 #define DC_SETBIT(sc, reg, x) \
312 CSR_WRITE_4(sc, reg, CSR_READ_4(sc, reg) | (x))
314 #define DC_CLRBIT(sc, reg, x) \
315 CSR_WRITE_4(sc, reg, CSR_READ_4(sc, reg) & ~(x))
317 #define SIO_SET(x) DC_SETBIT(sc, DC_SIO, (x))
318 #define SIO_CLR(x) DC_CLRBIT(sc, DC_SIO, (x))
320 static void dc_delay(sc)
325 for (idx = (300 / 33) + 1; idx > 0; idx--)
326 CSR_READ_4(sc, DC_BUSCTL);
329 static void dc_eeprom_width(sc)
334 /* Force EEPROM to idle state. */
337 /* Enter EEPROM access mode. */
338 CSR_WRITE_4(sc, DC_SIO, DC_SIO_EESEL);
340 DC_SETBIT(sc, DC_SIO, DC_SIO_ROMCTL_READ);
342 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK);
344 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CS);
349 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_DATAIN);
351 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_DATAIN);
353 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CLK);
355 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK);
359 for (i = 1; i <= 12; i++) {
360 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CLK);
362 if (!(CSR_READ_4(sc, DC_SIO) & DC_SIO_EE_DATAOUT)) {
363 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK);
367 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK);
371 /* Turn off EEPROM access mode. */
379 /* Enter EEPROM access mode. */
380 CSR_WRITE_4(sc, DC_SIO, DC_SIO_EESEL);
382 DC_SETBIT(sc, DC_SIO, DC_SIO_ROMCTL_READ);
384 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK);
386 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CS);
389 /* Turn off EEPROM access mode. */
393 static void dc_eeprom_idle(sc)
398 CSR_WRITE_4(sc, DC_SIO, DC_SIO_EESEL);
400 DC_SETBIT(sc, DC_SIO, DC_SIO_ROMCTL_READ);
402 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK);
404 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CS);
407 for (i = 0; i < 25; i++) {
408 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK);
410 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CLK);
414 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK);
416 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CS);
418 CSR_WRITE_4(sc, DC_SIO, 0x00000000);
424 * Send a read command and address to the EEPROM, check for ACK.
426 static void dc_eeprom_putbyte(sc, addr)
432 d = DC_EECMD_READ >> 6;
435 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_DATAIN);
437 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_DATAIN);
439 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CLK);
441 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK);
446 * Feed in each bit and strobe the clock.
448 for (i = sc->dc_romwidth; i--;) {
449 if (addr & (1 << i)) {
450 SIO_SET(DC_SIO_EE_DATAIN);
452 SIO_CLR(DC_SIO_EE_DATAIN);
455 SIO_SET(DC_SIO_EE_CLK);
457 SIO_CLR(DC_SIO_EE_CLK);
465 * Read a word of data stored in the EEPROM at address 'addr.'
466 * The PNIC 82c168/82c169 has its own non-standard way to read
469 static void dc_eeprom_getword_pnic(sc, addr, dest)
477 CSR_WRITE_4(sc, DC_PN_SIOCTL, DC_PN_EEOPCODE_READ|addr);
479 for (i = 0; i < DC_TIMEOUT; i++) {
481 r = CSR_READ_4(sc, DC_SIO);
482 if (!(r & DC_PN_SIOCTL_BUSY)) {
483 *dest = (u_int16_t)(r & 0xFFFF);
492 * Read a word of data stored in the EEPROM at address 'addr.'
494 static void dc_eeprom_getword(sc, addr, dest)
502 /* Force EEPROM to idle state. */
505 /* Enter EEPROM access mode. */
506 CSR_WRITE_4(sc, DC_SIO, DC_SIO_EESEL);
508 DC_SETBIT(sc, DC_SIO, DC_SIO_ROMCTL_READ);
510 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK);
512 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CS);
516 * Send address of word we want to read.
518 dc_eeprom_putbyte(sc, addr);
521 * Start reading bits from EEPROM.
523 for (i = 0x8000; i; i >>= 1) {
524 SIO_SET(DC_SIO_EE_CLK);
526 if (CSR_READ_4(sc, DC_SIO) & DC_SIO_EE_DATAOUT)
529 SIO_CLR(DC_SIO_EE_CLK);
533 /* Turn off EEPROM access mode. */
542 * Read a sequence of words from the EEPROM.
544 static void dc_read_eeprom(sc, dest, off, cnt, swap)
552 u_int16_t word = 0, *ptr;
554 for (i = 0; i < cnt; i++) {
556 dc_eeprom_getword_pnic(sc, off + i, &word);
558 dc_eeprom_getword(sc, off + i, &word);
559 ptr = (u_int16_t *)(dest + (i * 2));
570 * The following two routines are taken from the Macronix 98713
571 * Application Notes pp.19-21.
574 * Write a bit to the MII bus.
576 static void dc_mii_writebit(sc, bit)
581 CSR_WRITE_4(sc, DC_SIO,
582 DC_SIO_ROMCTL_WRITE|DC_SIO_MII_DATAOUT);
584 CSR_WRITE_4(sc, DC_SIO, DC_SIO_ROMCTL_WRITE);
586 DC_SETBIT(sc, DC_SIO, DC_SIO_MII_CLK);
587 DC_CLRBIT(sc, DC_SIO, DC_SIO_MII_CLK);
593 * Read a bit from the MII bus.
595 static int dc_mii_readbit(sc)
598 CSR_WRITE_4(sc, DC_SIO, DC_SIO_ROMCTL_READ|DC_SIO_MII_DIR);
599 CSR_READ_4(sc, DC_SIO);
600 DC_SETBIT(sc, DC_SIO, DC_SIO_MII_CLK);
601 DC_CLRBIT(sc, DC_SIO, DC_SIO_MII_CLK);
602 if (CSR_READ_4(sc, DC_SIO) & DC_SIO_MII_DATAIN)
609 * Sync the PHYs by setting data bit and strobing the clock 32 times.
611 static void dc_mii_sync(sc)
616 CSR_WRITE_4(sc, DC_SIO, DC_SIO_ROMCTL_WRITE);
618 for (i = 0; i < 32; i++)
619 dc_mii_writebit(sc, 1);
625 * Clock a series of bits through the MII.
627 static void dc_mii_send(sc, bits, cnt)
634 for (i = (0x1 << (cnt - 1)); i; i >>= 1)
635 dc_mii_writebit(sc, bits & i);
639 * Read an PHY register through the MII.
641 static int dc_mii_readreg(sc, frame)
643 struct dc_mii_frame *frame;
651 * Set up frame for RX.
653 frame->mii_stdelim = DC_MII_STARTDELIM;
654 frame->mii_opcode = DC_MII_READOP;
655 frame->mii_turnaround = 0;
664 * Send command/address info.
666 dc_mii_send(sc, frame->mii_stdelim, 2);
667 dc_mii_send(sc, frame->mii_opcode, 2);
668 dc_mii_send(sc, frame->mii_phyaddr, 5);
669 dc_mii_send(sc, frame->mii_regaddr, 5);
673 dc_mii_writebit(sc, 1);
674 dc_mii_writebit(sc, 0);
678 ack = dc_mii_readbit(sc);
681 * Now try reading data bits. If the ack failed, we still
682 * need to clock through 16 cycles to keep the PHY(s) in sync.
685 for(i = 0; i < 16; i++) {
691 for (i = 0x8000; i; i >>= 1) {
693 if (dc_mii_readbit(sc))
694 frame->mii_data |= i;
700 dc_mii_writebit(sc, 0);
701 dc_mii_writebit(sc, 0);
711 * Write to a PHY register through the MII.
713 static int dc_mii_writereg(sc, frame)
715 struct dc_mii_frame *frame;
721 * Set up frame for TX.
724 frame->mii_stdelim = DC_MII_STARTDELIM;
725 frame->mii_opcode = DC_MII_WRITEOP;
726 frame->mii_turnaround = DC_MII_TURNAROUND;
733 dc_mii_send(sc, frame->mii_stdelim, 2);
734 dc_mii_send(sc, frame->mii_opcode, 2);
735 dc_mii_send(sc, frame->mii_phyaddr, 5);
736 dc_mii_send(sc, frame->mii_regaddr, 5);
737 dc_mii_send(sc, frame->mii_turnaround, 2);
738 dc_mii_send(sc, frame->mii_data, 16);
741 dc_mii_writebit(sc, 0);
742 dc_mii_writebit(sc, 0);
749 static int dc_miibus_readreg(dev, phy, reg)
753 struct dc_mii_frame frame;
755 int i, rval, phy_reg = 0;
757 sc = device_get_softc(dev);
758 bzero((char *)&frame, sizeof(frame));
761 * Note: both the AL981 and AN985 have internal PHYs,
762 * however the AL981 provides direct access to the PHY
763 * registers while the AN985 uses a serial MII interface.
764 * The AN985's MII interface is also buggy in that you
765 * can read from any MII address (0 to 31), but only address 1
766 * behaves normally. To deal with both cases, we pretend
767 * that the PHY is at MII address 1.
769 if (DC_IS_ADMTEK(sc) && phy != DC_ADMTEK_PHYADDR)
773 * Note: the ukphy probes of the RS7112 report a PHY at
774 * MII address 0 (possibly HomePNA?) and 1 (ethernet)
775 * so we only respond to correct one.
777 if (DC_IS_CONEXANT(sc) && phy != DC_CONEXANT_PHYADDR)
780 if (sc->dc_pmode != DC_PMODE_MII) {
781 if (phy == (MII_NPHY - 1)) {
785 * Fake something to make the probe
786 * code think there's a PHY here.
788 return(BMSR_MEDIAMASK);
792 return(DC_VENDORID_LO);
793 return(DC_VENDORID_DEC);
797 return(DC_DEVICEID_82C168);
798 return(DC_DEVICEID_21143);
808 if (DC_IS_PNIC(sc)) {
809 CSR_WRITE_4(sc, DC_PN_MII, DC_PN_MIIOPCODE_READ |
810 (phy << 23) | (reg << 18));
811 for (i = 0; i < DC_TIMEOUT; i++) {
813 rval = CSR_READ_4(sc, DC_PN_MII);
814 if (!(rval & DC_PN_MII_BUSY)) {
816 return(rval == 0xFFFF ? 0 : rval);
822 if (DC_IS_COMET(sc)) {
825 phy_reg = DC_AL_BMCR;
828 phy_reg = DC_AL_BMSR;
831 phy_reg = DC_AL_VENID;
834 phy_reg = DC_AL_DEVID;
837 phy_reg = DC_AL_ANAR;
840 phy_reg = DC_AL_LPAR;
843 phy_reg = DC_AL_ANER;
846 if_printf(&sc->arpcom.ac_if,
847 "phy_read: bad phy register %x\n", reg);
852 rval = CSR_READ_4(sc, phy_reg) & 0x0000FFFF;
859 frame.mii_phyaddr = phy;
860 frame.mii_regaddr = reg;
861 if (sc->dc_type == DC_TYPE_98713) {
862 phy_reg = CSR_READ_4(sc, DC_NETCFG);
863 CSR_WRITE_4(sc, DC_NETCFG, phy_reg & ~DC_NETCFG_PORTSEL);
865 dc_mii_readreg(sc, &frame);
866 if (sc->dc_type == DC_TYPE_98713)
867 CSR_WRITE_4(sc, DC_NETCFG, phy_reg);
869 return(frame.mii_data);
872 static int dc_miibus_writereg(dev, phy, reg, data)
877 struct dc_mii_frame frame;
880 sc = device_get_softc(dev);
881 bzero((char *)&frame, sizeof(frame));
883 if (DC_IS_ADMTEK(sc) && phy != DC_ADMTEK_PHYADDR)
886 if (DC_IS_CONEXANT(sc) && phy != DC_CONEXANT_PHYADDR)
889 if (DC_IS_PNIC(sc)) {
890 CSR_WRITE_4(sc, DC_PN_MII, DC_PN_MIIOPCODE_WRITE |
891 (phy << 23) | (reg << 10) | data);
892 for (i = 0; i < DC_TIMEOUT; i++) {
893 if (!(CSR_READ_4(sc, DC_PN_MII) & DC_PN_MII_BUSY))
899 if (DC_IS_COMET(sc)) {
902 phy_reg = DC_AL_BMCR;
905 phy_reg = DC_AL_BMSR;
908 phy_reg = DC_AL_VENID;
911 phy_reg = DC_AL_DEVID;
914 phy_reg = DC_AL_ANAR;
917 phy_reg = DC_AL_LPAR;
920 phy_reg = DC_AL_ANER;
923 if_printf(&sc->arpcom.ac_if,
924 "phy_write: bad phy register %x\n", reg);
929 CSR_WRITE_4(sc, phy_reg, data);
933 frame.mii_phyaddr = phy;
934 frame.mii_regaddr = reg;
935 frame.mii_data = data;
937 if (sc->dc_type == DC_TYPE_98713) {
938 phy_reg = CSR_READ_4(sc, DC_NETCFG);
939 CSR_WRITE_4(sc, DC_NETCFG, phy_reg & ~DC_NETCFG_PORTSEL);
941 dc_mii_writereg(sc, &frame);
942 if (sc->dc_type == DC_TYPE_98713)
943 CSR_WRITE_4(sc, DC_NETCFG, phy_reg);
948 static void dc_miibus_statchg(dev)
952 struct mii_data *mii;
955 sc = device_get_softc(dev);
956 if (DC_IS_ADMTEK(sc))
959 mii = device_get_softc(sc->dc_miibus);
960 ifm = &mii->mii_media;
961 if (DC_IS_DAVICOM(sc) &&
962 IFM_SUBTYPE(ifm->ifm_media) == IFM_HPNA_1) {
963 dc_setcfg(sc, ifm->ifm_media);
964 sc->dc_if_media = ifm->ifm_media;
966 dc_setcfg(sc, mii->mii_media_active);
967 sc->dc_if_media = mii->mii_media_active;
974 * Special support for DM9102A cards with HomePNA PHYs. Note:
975 * with the Davicom DM9102A/DM9801 eval board that I have, it seems
976 * to be impossible to talk to the management interface of the DM9801
977 * PHY (its MDIO pin is not connected to anything). Consequently,
978 * the driver has to just 'know' about the additional mode and deal
979 * with it itself. *sigh*
981 static void dc_miibus_mediainit(dev)
985 struct mii_data *mii;
989 rev = pci_get_revid(dev);
991 sc = device_get_softc(dev);
992 mii = device_get_softc(sc->dc_miibus);
993 ifm = &mii->mii_media;
995 if (DC_IS_DAVICOM(sc) && rev >= DC_REVISION_DM9102A)
996 ifmedia_add(ifm, IFM_ETHER | IFM_HPNA_1, 0, NULL);
1001 #define DC_BITS_512 9
1002 #define DC_BITS_128 7
1003 #define DC_BITS_64 6
1006 dc_crc_mask(struct dc_softc *sc)
1009 * The hash table on the PNIC II and the MX98715AEC-C/D/E
1010 * chips is only 128 bits wide.
1012 if (sc->dc_flags & DC_128BIT_HASH)
1013 return ((1 << DC_BITS_128) - 1);
1015 /* The hash table on the MX98715BEC is only 64 bits wide. */
1016 if (sc->dc_flags & DC_64BIT_HASH)
1017 return ((1 << DC_BITS_64) - 1);
1019 return ((1 << DC_BITS_512) - 1);
1023 * 21143-style RX filter setup routine. Filter programming is done by
1024 * downloading a special setup frame into the TX engine. 21143, Macronix,
1025 * PNIC, PNIC II and Davicom chips are programmed this way.
1027 * We always program the chip using 'hash perfect' mode, i.e. one perfect
1028 * address (our node address) and a 512-bit hash filter for multicast
1029 * frames. We also sneak the broadcast address into the hash filter since
1032 void dc_setfilt_21143(sc)
1033 struct dc_softc *sc;
1035 struct dc_desc *sframe;
1036 u_int32_t h, crc_mask, *sp;
1037 struct ifmultiaddr *ifma;
1041 ifp = &sc->arpcom.ac_if;
1043 i = sc->dc_cdata.dc_tx_prod;
1044 DC_INC(sc->dc_cdata.dc_tx_prod, DC_TX_LIST_CNT);
1045 sc->dc_cdata.dc_tx_cnt++;
1046 sframe = &sc->dc_ldata->dc_tx_list[i];
1047 sp = (u_int32_t *)&sc->dc_cdata.dc_sbuf;
1048 bzero((char *)sp, DC_SFRAME_LEN);
1050 sframe->dc_data = vtophys(&sc->dc_cdata.dc_sbuf);
1051 sframe->dc_ctl = DC_SFRAME_LEN | DC_TXCTL_SETUP | DC_TXCTL_TLINK |
1052 DC_FILTER_HASHPERF | DC_TXCTL_FINT;
1054 sc->dc_cdata.dc_tx_chain[i] = (struct mbuf *)&sc->dc_cdata.dc_sbuf;
1056 /* If we want promiscuous mode, set the allframes bit. */
1057 if (ifp->if_flags & IFF_PROMISC)
1058 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC);
1060 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC);
1062 if (ifp->if_flags & IFF_ALLMULTI)
1063 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI);
1065 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI);
1067 crc_mask = dc_crc_mask(sc);
1068 for (ifma = ifp->if_multiaddrs.lh_first; ifma != NULL;
1069 ifma = ifma->ifma_link.le_next) {
1070 if (ifma->ifma_addr->sa_family != AF_LINK)
1073 LLADDR((struct sockaddr_dl *)ifma->ifma_addr),
1074 ETHER_ADDR_LEN) & crc_mask;
1075 sp[h >> 4] |= 1 << (h & 0xF);
1078 if (ifp->if_flags & IFF_BROADCAST) {
1079 h = ether_crc32_le(ifp->if_broadcastaddr,
1080 ETHER_ADDR_LEN) & crc_mask;
1081 sp[h >> 4] |= 1 << (h & 0xF);
1084 /* Set our MAC address */
1085 sp[39] = ((u_int16_t *)sc->arpcom.ac_enaddr)[0];
1086 sp[40] = ((u_int16_t *)sc->arpcom.ac_enaddr)[1];
1087 sp[41] = ((u_int16_t *)sc->arpcom.ac_enaddr)[2];
1089 sframe->dc_status = DC_TXSTAT_OWN;
1090 CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF);
1093 * The PNIC takes an exceedingly long time to process its
1094 * setup frame; wait 10ms after posting the setup frame
1095 * before proceeding, just so it has time to swallow its
1105 void dc_setfilt_admtek(sc)
1106 struct dc_softc *sc;
1111 u_int32_t hashes[2] = { 0, 0 };
1112 struct ifmultiaddr *ifma;
1114 ifp = &sc->arpcom.ac_if;
1116 /* Init our MAC address */
1117 CSR_WRITE_4(sc, DC_AL_PAR0, *(u_int32_t *)(&sc->arpcom.ac_enaddr[0]));
1118 CSR_WRITE_4(sc, DC_AL_PAR1, *(u_int32_t *)(&sc->arpcom.ac_enaddr[4]));
1120 /* If we want promiscuous mode, set the allframes bit. */
1121 if (ifp->if_flags & IFF_PROMISC)
1122 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC);
1124 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC);
1126 if (ifp->if_flags & IFF_ALLMULTI)
1127 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI);
1129 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI);
1131 /* first, zot all the existing hash bits */
1132 CSR_WRITE_4(sc, DC_AL_MAR0, 0);
1133 CSR_WRITE_4(sc, DC_AL_MAR1, 0);
1136 * If we're already in promisc or allmulti mode, we
1137 * don't have to bother programming the multicast filter.
1139 if (ifp->if_flags & (IFF_PROMISC|IFF_ALLMULTI))
1142 /* now program new ones */
1143 if (DC_IS_CENTAUR(sc))
1144 crc_mask = dc_crc_mask(sc);
1147 for (ifma = ifp->if_multiaddrs.lh_first; ifma != NULL;
1148 ifma = ifma->ifma_link.le_next) {
1149 if (ifma->ifma_addr->sa_family != AF_LINK)
1151 if (DC_IS_CENTAUR(sc)) {
1153 LLADDR((struct sockaddr_dl *)ifma->ifma_addr),
1154 ETHER_ADDR_LEN) & crc_mask;
1157 LLADDR((struct sockaddr_dl *)ifma->ifma_addr),
1159 h = (h >> 26) & crc_mask;
1162 hashes[0] |= (1 << h);
1164 hashes[1] |= (1 << (h - 32));
1167 CSR_WRITE_4(sc, DC_AL_MAR0, hashes[0]);
1168 CSR_WRITE_4(sc, DC_AL_MAR1, hashes[1]);
1173 void dc_setfilt_asix(sc)
1174 struct dc_softc *sc;
1178 u_int32_t hashes[2] = { 0, 0 };
1179 struct ifmultiaddr *ifma;
1181 ifp = &sc->arpcom.ac_if;
1183 /* Init our MAC address */
1184 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_PAR0);
1185 CSR_WRITE_4(sc, DC_AX_FILTDATA,
1186 *(u_int32_t *)(&sc->arpcom.ac_enaddr[0]));
1187 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_PAR1);
1188 CSR_WRITE_4(sc, DC_AX_FILTDATA,
1189 *(u_int32_t *)(&sc->arpcom.ac_enaddr[4]));
1191 /* If we want promiscuous mode, set the allframes bit. */
1192 if (ifp->if_flags & IFF_PROMISC)
1193 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC);
1195 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC);
1197 if (ifp->if_flags & IFF_ALLMULTI)
1198 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI);
1200 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI);
1203 * The ASIX chip has a special bit to enable reception
1204 * of broadcast frames.
1206 if (ifp->if_flags & IFF_BROADCAST)
1207 DC_SETBIT(sc, DC_NETCFG, DC_AX_NETCFG_RX_BROAD);
1209 DC_CLRBIT(sc, DC_NETCFG, DC_AX_NETCFG_RX_BROAD);
1211 /* first, zot all the existing hash bits */
1212 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_MAR0);
1213 CSR_WRITE_4(sc, DC_AX_FILTDATA, 0);
1214 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_MAR1);
1215 CSR_WRITE_4(sc, DC_AX_FILTDATA, 0);
1218 * If we're already in promisc or allmulti mode, we
1219 * don't have to bother programming the multicast filter.
1221 if (ifp->if_flags & (IFF_PROMISC|IFF_ALLMULTI))
1224 /* now program new ones */
1225 for (ifma = ifp->if_multiaddrs.lh_first; ifma != NULL;
1226 ifma = ifma->ifma_link.le_next) {
1227 if (ifma->ifma_addr->sa_family != AF_LINK)
1230 LLADDR((struct sockaddr_dl *)ifma->ifma_addr),
1232 h = (h >> 26) & 0x3f;
1234 hashes[0] |= (1 << h);
1236 hashes[1] |= (1 << (h - 32));
1239 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_MAR0);
1240 CSR_WRITE_4(sc, DC_AX_FILTDATA, hashes[0]);
1241 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_MAR1);
1242 CSR_WRITE_4(sc, DC_AX_FILTDATA, hashes[1]);
1247 static void dc_setfilt(sc)
1248 struct dc_softc *sc;
1250 if (DC_IS_INTEL(sc) || DC_IS_MACRONIX(sc) || DC_IS_PNIC(sc) ||
1251 DC_IS_PNICII(sc) || DC_IS_DAVICOM(sc) || DC_IS_CONEXANT(sc))
1252 dc_setfilt_21143(sc);
1255 dc_setfilt_asix(sc);
1257 if (DC_IS_ADMTEK(sc))
1258 dc_setfilt_admtek(sc);
1264 * In order to fiddle with the
1265 * 'full-duplex' and '100Mbps' bits in the netconfig register, we
1266 * first have to put the transmit and/or receive logic in the idle state.
1268 static void dc_setcfg(sc, media)
1269 struct dc_softc *sc;
1275 if (IFM_SUBTYPE(media) == IFM_NONE)
1278 if (CSR_READ_4(sc, DC_NETCFG) & (DC_NETCFG_TX_ON|DC_NETCFG_RX_ON)) {
1280 DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_TX_ON|DC_NETCFG_RX_ON));
1282 for (i = 0; i < DC_TIMEOUT; i++) {
1283 isr = CSR_READ_4(sc, DC_ISR);
1284 if (isr & DC_ISR_TX_IDLE ||
1285 (isr & DC_ISR_RX_STATE) == DC_RXSTATE_STOPPED)
1290 if (i == DC_TIMEOUT) {
1291 if_printf(&sc->arpcom.ac_if,
1292 "failed to force tx and rx to idle state\n");
1296 if (IFM_SUBTYPE(media) == IFM_100_TX) {
1297 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_SPEEDSEL);
1298 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_HEARTBEAT);
1299 if (sc->dc_pmode == DC_PMODE_MII) {
1302 if (DC_IS_INTEL(sc)) {
1303 /* there's a write enable bit here that reads as 1 */
1304 watchdogreg = CSR_READ_4(sc, DC_WATCHDOG);
1305 watchdogreg &= ~DC_WDOG_CTLWREN;
1306 watchdogreg |= DC_WDOG_JABBERDIS;
1307 CSR_WRITE_4(sc, DC_WATCHDOG, watchdogreg);
1309 DC_SETBIT(sc, DC_WATCHDOG, DC_WDOG_JABBERDIS);
1311 DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_PCS|
1312 DC_NETCFG_PORTSEL|DC_NETCFG_SCRAMBLER));
1313 if (sc->dc_type == DC_TYPE_98713)
1314 DC_SETBIT(sc, DC_NETCFG, (DC_NETCFG_PCS|
1315 DC_NETCFG_SCRAMBLER));
1316 if (!DC_IS_DAVICOM(sc))
1317 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL);
1318 DC_CLRBIT(sc, DC_10BTCTRL, 0xFFFF);
1319 if (DC_IS_INTEL(sc))
1320 dc_apply_fixup(sc, IFM_AUTO);
1322 if (DC_IS_PNIC(sc)) {
1323 DC_PN_GPIO_SETBIT(sc, DC_PN_GPIO_SPEEDSEL);
1324 DC_PN_GPIO_SETBIT(sc, DC_PN_GPIO_100TX_LOOP);
1325 DC_SETBIT(sc, DC_PN_NWAY, DC_PN_NWAY_SPEEDSEL);
1327 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL);
1328 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PCS);
1329 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_SCRAMBLER);
1330 if (DC_IS_INTEL(sc))
1332 (media & IFM_GMASK) == IFM_FDX ?
1333 IFM_100_TX|IFM_FDX : IFM_100_TX);
1337 if (IFM_SUBTYPE(media) == IFM_10_T) {
1338 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_SPEEDSEL);
1339 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_HEARTBEAT);
1340 if (sc->dc_pmode == DC_PMODE_MII) {
1343 /* there's a write enable bit here that reads as 1 */
1344 if (DC_IS_INTEL(sc)) {
1345 watchdogreg = CSR_READ_4(sc, DC_WATCHDOG);
1346 watchdogreg &= ~DC_WDOG_CTLWREN;
1347 watchdogreg |= DC_WDOG_JABBERDIS;
1348 CSR_WRITE_4(sc, DC_WATCHDOG, watchdogreg);
1350 DC_SETBIT(sc, DC_WATCHDOG, DC_WDOG_JABBERDIS);
1352 DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_PCS|
1353 DC_NETCFG_PORTSEL|DC_NETCFG_SCRAMBLER));
1354 if (sc->dc_type == DC_TYPE_98713)
1355 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PCS);
1356 if (!DC_IS_DAVICOM(sc))
1357 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL);
1358 DC_CLRBIT(sc, DC_10BTCTRL, 0xFFFF);
1359 if (DC_IS_INTEL(sc))
1360 dc_apply_fixup(sc, IFM_AUTO);
1362 if (DC_IS_PNIC(sc)) {
1363 DC_PN_GPIO_CLRBIT(sc, DC_PN_GPIO_SPEEDSEL);
1364 DC_PN_GPIO_SETBIT(sc, DC_PN_GPIO_100TX_LOOP);
1365 DC_CLRBIT(sc, DC_PN_NWAY, DC_PN_NWAY_SPEEDSEL);
1367 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL);
1368 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_PCS);
1369 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_SCRAMBLER);
1370 if (DC_IS_INTEL(sc)) {
1371 DC_CLRBIT(sc, DC_SIARESET, DC_SIA_RESET);
1372 DC_CLRBIT(sc, DC_10BTCTRL, 0xFFFF);
1373 if ((media & IFM_GMASK) == IFM_FDX)
1374 DC_SETBIT(sc, DC_10BTCTRL, 0x7F3D);
1376 DC_SETBIT(sc, DC_10BTCTRL, 0x7F3F);
1377 DC_SETBIT(sc, DC_SIARESET, DC_SIA_RESET);
1378 DC_CLRBIT(sc, DC_10BTCTRL,
1379 DC_TCTL_AUTONEGENBL);
1381 (media & IFM_GMASK) == IFM_FDX ?
1382 IFM_10_T|IFM_FDX : IFM_10_T);
1389 * If this is a Davicom DM9102A card with a DM9801 HomePNA
1390 * PHY and we want HomePNA mode, set the portsel bit to turn
1391 * on the external MII port.
1393 if (DC_IS_DAVICOM(sc)) {
1394 if (IFM_SUBTYPE(media) == IFM_HPNA_1) {
1395 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL);
1398 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL);
1402 if ((media & IFM_GMASK) == IFM_FDX) {
1403 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_FULLDUPLEX);
1404 if (sc->dc_pmode == DC_PMODE_SYM && DC_IS_PNIC(sc))
1405 DC_SETBIT(sc, DC_PN_NWAY, DC_PN_NWAY_DUPLEX);
1407 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_FULLDUPLEX);
1408 if (sc->dc_pmode == DC_PMODE_SYM && DC_IS_PNIC(sc))
1409 DC_CLRBIT(sc, DC_PN_NWAY, DC_PN_NWAY_DUPLEX);
1413 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON|DC_NETCFG_RX_ON);
1418 static void dc_reset(sc)
1419 struct dc_softc *sc;
1423 DC_SETBIT(sc, DC_BUSCTL, DC_BUSCTL_RESET);
1425 for (i = 0; i < DC_TIMEOUT; i++) {
1427 if (!(CSR_READ_4(sc, DC_BUSCTL) & DC_BUSCTL_RESET))
1431 if (DC_IS_ASIX(sc) || DC_IS_ADMTEK(sc) || DC_IS_CONEXANT(sc)) {
1433 DC_CLRBIT(sc, DC_BUSCTL, DC_BUSCTL_RESET);
1437 if (i == DC_TIMEOUT)
1438 if_printf(&sc->arpcom.ac_if, "reset never completed!\n");
1440 /* Wait a little while for the chip to get its brains in order. */
1443 CSR_WRITE_4(sc, DC_IMR, 0x00000000);
1444 CSR_WRITE_4(sc, DC_BUSCTL, 0x00000000);
1445 CSR_WRITE_4(sc, DC_NETCFG, 0x00000000);
1448 * Bring the SIA out of reset. In some cases, it looks
1449 * like failing to unreset the SIA soon enough gets it
1450 * into a state where it will never come out of reset
1451 * until we reset the whole chip again.
1453 if (DC_IS_INTEL(sc)) {
1454 DC_SETBIT(sc, DC_SIARESET, DC_SIA_RESET);
1455 CSR_WRITE_4(sc, DC_10BTCTRL, 0);
1456 CSR_WRITE_4(sc, DC_WATCHDOG, 0);
1462 static struct dc_type *dc_devtype(dev)
1470 while(t->dc_name != NULL) {
1471 if ((pci_get_vendor(dev) == t->dc_vid) &&
1472 (pci_get_device(dev) == t->dc_did)) {
1473 /* Check the PCI revision */
1474 rev = pci_get_revid(dev);
1475 if (t->dc_did == DC_DEVICEID_98713 &&
1476 rev >= DC_REVISION_98713A)
1478 if (t->dc_did == DC_DEVICEID_98713_CP &&
1479 rev >= DC_REVISION_98713A)
1481 if (t->dc_did == DC_DEVICEID_987x5 &&
1482 rev >= DC_REVISION_98715AEC_C)
1484 if (t->dc_did == DC_DEVICEID_987x5 &&
1485 rev >= DC_REVISION_98725)
1487 if (t->dc_did == DC_DEVICEID_AX88140A &&
1488 rev >= DC_REVISION_88141)
1490 if (t->dc_did == DC_DEVICEID_82C168 &&
1491 rev >= DC_REVISION_82C169)
1493 if (t->dc_did == DC_DEVICEID_DM9102 &&
1494 rev >= DC_REVISION_DM9102A)
1505 * Probe for a 21143 or clone chip. Check the PCI vendor and device
1506 * IDs against our list and return a device name if we find a match.
1507 * We do a little bit of extra work to identify the exact type of
1508 * chip. The MX98713 and MX98713A have the same PCI vendor/device ID,
1509 * but different revision IDs. The same is true for 98715/98715A
1510 * chips and the 98725, as well as the ASIX and ADMtek chips. In some
1511 * cases, the exact chip revision affects driver behavior.
1513 static int dc_probe(dev)
1518 t = dc_devtype(dev);
1521 device_set_desc(dev, t->dc_name);
1528 static void dc_acpi(dev)
1533 /* Find the location of the capabilities block */
1534 cptr = pci_read_config(dev, DC_PCI_CCAP, 4) & 0xFF;
1536 r = pci_read_config(dev, cptr, 4) & 0xFF;
1539 r = pci_read_config(dev, cptr + 4, 4);
1540 if (r & DC_PSTATE_D3) {
1541 u_int32_t iobase, membase, irq;
1542 struct dc_softc *sc;
1544 /* Save important PCI config data. */
1545 iobase = pci_read_config(dev, DC_PCI_CFBIO, 4);
1546 membase = pci_read_config(dev, DC_PCI_CFBMA, 4);
1547 irq = pci_read_config(dev, DC_PCI_CFIT, 4);
1549 sc = device_get_softc(dev);
1550 /* Reset the power state. */
1551 if_printf(&sc->arpcom.ac_if,
1552 "chip is in D%d power mode "
1553 "-- setting to D0\n", r & DC_PSTATE_D3);
1555 pci_write_config(dev, cptr + 4, r, 4);
1557 /* Restore PCI config data. */
1558 pci_write_config(dev, DC_PCI_CFBIO, iobase, 4);
1559 pci_write_config(dev, DC_PCI_CFBMA, membase, 4);
1560 pci_write_config(dev, DC_PCI_CFIT, irq, 4);
1565 static void dc_apply_fixup(sc, media)
1566 struct dc_softc *sc;
1569 struct dc_mediainfo *m;
1577 if (m->dc_media == media)
1585 for (i = 0, p = m->dc_reset_ptr; i < m->dc_reset_len; i++, p += 2) {
1586 reg = (p[0] | (p[1] << 8)) << 16;
1587 CSR_WRITE_4(sc, DC_WATCHDOG, reg);
1590 for (i = 0, p = m->dc_gp_ptr; i < m->dc_gp_len; i++, p += 2) {
1591 reg = (p[0] | (p[1] << 8)) << 16;
1592 CSR_WRITE_4(sc, DC_WATCHDOG, reg);
1598 static void dc_decode_leaf_sia(sc, l)
1599 struct dc_softc *sc;
1600 struct dc_eblock_sia *l;
1602 struct dc_mediainfo *m;
1604 m = malloc(sizeof(struct dc_mediainfo), M_DEVBUF, M_INTWAIT | M_ZERO);
1605 if (l->dc_sia_code == DC_SIA_CODE_10BT)
1606 m->dc_media = IFM_10_T;
1608 if (l->dc_sia_code == DC_SIA_CODE_10BT_FDX)
1609 m->dc_media = IFM_10_T|IFM_FDX;
1611 if (l->dc_sia_code == DC_SIA_CODE_10B2)
1612 m->dc_media = IFM_10_2;
1614 if (l->dc_sia_code == DC_SIA_CODE_10B5)
1615 m->dc_media = IFM_10_5;
1618 m->dc_gp_ptr = (u_int8_t *)&l->dc_sia_gpio_ctl;
1620 m->dc_next = sc->dc_mi;
1623 sc->dc_pmode = DC_PMODE_SIA;
1628 static void dc_decode_leaf_sym(sc, l)
1629 struct dc_softc *sc;
1630 struct dc_eblock_sym *l;
1632 struct dc_mediainfo *m;
1634 m = malloc(sizeof(struct dc_mediainfo), M_DEVBUF, M_INTWAIT | M_ZERO);
1635 if (l->dc_sym_code == DC_SYM_CODE_100BT)
1636 m->dc_media = IFM_100_TX;
1638 if (l->dc_sym_code == DC_SYM_CODE_100BT_FDX)
1639 m->dc_media = IFM_100_TX|IFM_FDX;
1642 m->dc_gp_ptr = (u_int8_t *)&l->dc_sym_gpio_ctl;
1644 m->dc_next = sc->dc_mi;
1647 sc->dc_pmode = DC_PMODE_SYM;
1652 static void dc_decode_leaf_mii(sc, l)
1653 struct dc_softc *sc;
1654 struct dc_eblock_mii *l;
1657 struct dc_mediainfo *m;
1659 m = malloc(sizeof(struct dc_mediainfo), M_DEVBUF, M_INTWAIT | M_ZERO);
1660 /* We abuse IFM_AUTO to represent MII. */
1661 m->dc_media = IFM_AUTO;
1662 m->dc_gp_len = l->dc_gpr_len;
1665 p += sizeof(struct dc_eblock_mii);
1667 p += 2 * l->dc_gpr_len;
1668 m->dc_reset_len = *p;
1670 m->dc_reset_ptr = p;
1672 m->dc_next = sc->dc_mi;
1678 static void dc_read_srom(sc, bits)
1679 struct dc_softc *sc;
1685 sc->dc_srom = malloc(size, M_DEVBUF, M_INTWAIT);
1686 dc_read_eeprom(sc, (caddr_t)sc->dc_srom, 0, (size / 2), 0);
1689 static void dc_parse_21143_srom(sc)
1690 struct dc_softc *sc;
1692 struct dc_leaf_hdr *lhdr;
1693 struct dc_eblock_hdr *hdr;
1699 loff = sc->dc_srom[27];
1700 lhdr = (struct dc_leaf_hdr *)&(sc->dc_srom[loff]);
1703 ptr += sizeof(struct dc_leaf_hdr) - 1;
1705 * Look if we got a MII media block.
1707 for (i = 0; i < lhdr->dc_mcnt; i++) {
1708 hdr = (struct dc_eblock_hdr *)ptr;
1709 if (hdr->dc_type == DC_EBLOCK_MII)
1712 ptr += (hdr->dc_len & 0x7F);
1717 * Do the same thing again. Only use SIA and SYM media
1718 * blocks if no MII media block is available.
1721 ptr += sizeof(struct dc_leaf_hdr) - 1;
1722 for (i = 0; i < lhdr->dc_mcnt; i++) {
1723 hdr = (struct dc_eblock_hdr *)ptr;
1724 switch(hdr->dc_type) {
1726 dc_decode_leaf_mii(sc, (struct dc_eblock_mii *)hdr);
1730 dc_decode_leaf_sia(sc,
1731 (struct dc_eblock_sia *)hdr);
1735 dc_decode_leaf_sym(sc,
1736 (struct dc_eblock_sym *)hdr);
1739 /* Don't care. Yet. */
1742 ptr += (hdr->dc_len & 0x7F);
1750 * Attach the interface. Allocate softc structures, do ifmedia
1751 * setup and ethernet/BPF attach.
1753 static int dc_attach(dev)
1757 u_char eaddr[ETHER_ADDR_LEN];
1759 struct dc_softc *sc;
1762 int error = 0, rid, mac_offset;
1764 sc = device_get_softc(dev);
1765 callout_init(&sc->dc_stat_timer);
1767 ifp = &sc->arpcom.ac_if;
1768 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
1771 * Handle power management nonsense.
1776 * Map control/status registers.
1778 pci_enable_busmaster(dev);
1781 sc->dc_res = bus_alloc_resource_any(dev, DC_RES, &rid, RF_ACTIVE);
1783 if (sc->dc_res == NULL) {
1784 device_printf(dev, "couldn't map ports/memory\n");
1789 sc->dc_btag = rman_get_bustag(sc->dc_res);
1790 sc->dc_bhandle = rman_get_bushandle(sc->dc_res);
1792 /* Allocate interrupt */
1794 sc->dc_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
1795 RF_SHAREABLE | RF_ACTIVE);
1797 if (sc->dc_irq == NULL) {
1798 device_printf(dev, "couldn't map interrupt\n");
1803 /* Need this info to decide on a chip type. */
1804 sc->dc_info = dc_devtype(dev);
1805 revision = pci_get_revid(dev);
1807 /* Get the eeprom width, but PNIC has diff eeprom */
1808 if (sc->dc_info->dc_did != DC_DEVICEID_82C168)
1809 dc_eeprom_width(sc);
1811 switch(sc->dc_info->dc_did) {
1812 case DC_DEVICEID_21143:
1813 sc->dc_type = DC_TYPE_21143;
1814 sc->dc_flags |= DC_TX_POLL|DC_TX_USE_TX_INTR;
1815 sc->dc_flags |= DC_REDUCED_MII_POLL;
1816 /* Save EEPROM contents so we can parse them later. */
1817 dc_read_srom(sc, sc->dc_romwidth);
1819 case DC_DEVICEID_DM9009:
1820 case DC_DEVICEID_DM9100:
1821 case DC_DEVICEID_DM9102:
1822 sc->dc_type = DC_TYPE_DM9102;
1823 sc->dc_flags |= DC_TX_COALESCE|DC_TX_INTR_ALWAYS;
1824 sc->dc_flags |= DC_REDUCED_MII_POLL|DC_TX_STORENFWD;
1825 sc->dc_pmode = DC_PMODE_MII;
1826 /* Increase the latency timer value. */
1827 command = pci_read_config(dev, DC_PCI_CFLT, 4);
1828 command &= 0xFFFF00FF;
1829 command |= 0x00008000;
1830 pci_write_config(dev, DC_PCI_CFLT, command, 4);
1832 case DC_DEVICEID_AL981:
1833 sc->dc_type = DC_TYPE_AL981;
1834 sc->dc_flags |= DC_TX_USE_TX_INTR;
1835 sc->dc_flags |= DC_TX_ADMTEK_WAR;
1836 sc->dc_pmode = DC_PMODE_MII;
1837 dc_read_srom(sc, sc->dc_romwidth);
1839 case DC_DEVICEID_AN985:
1840 case DC_DEVICEID_EN2242:
1841 case DC_DEVICEID_3CSOHOB:
1842 sc->dc_type = DC_TYPE_AN985;
1843 sc->dc_flags |= DC_64BIT_HASH;
1844 sc->dc_flags |= DC_TX_USE_TX_INTR;
1845 sc->dc_flags |= DC_TX_ADMTEK_WAR;
1846 sc->dc_pmode = DC_PMODE_MII;
1847 dc_read_srom(sc, sc->dc_romwidth);
1849 case DC_DEVICEID_98713:
1850 case DC_DEVICEID_98713_CP:
1851 if (revision < DC_REVISION_98713A) {
1852 sc->dc_type = DC_TYPE_98713;
1854 if (revision >= DC_REVISION_98713A) {
1855 sc->dc_type = DC_TYPE_98713A;
1856 sc->dc_flags |= DC_21143_NWAY;
1858 sc->dc_flags |= DC_REDUCED_MII_POLL;
1859 sc->dc_flags |= DC_TX_POLL|DC_TX_USE_TX_INTR;
1861 case DC_DEVICEID_987x5:
1862 case DC_DEVICEID_EN1217:
1864 * Macronix MX98715AEC-C/D/E parts have only a
1865 * 128-bit hash table. We need to deal with these
1866 * in the same manner as the PNIC II so that we
1867 * get the right number of bits out of the
1870 if (revision >= DC_REVISION_98715AEC_C &&
1871 revision < DC_REVISION_98725)
1872 sc->dc_flags |= DC_128BIT_HASH;
1873 sc->dc_type = DC_TYPE_987x5;
1874 sc->dc_flags |= DC_TX_POLL|DC_TX_USE_TX_INTR;
1875 sc->dc_flags |= DC_REDUCED_MII_POLL|DC_21143_NWAY;
1877 case DC_DEVICEID_98727:
1878 sc->dc_type = DC_TYPE_987x5;
1879 sc->dc_flags |= DC_TX_POLL|DC_TX_USE_TX_INTR;
1880 sc->dc_flags |= DC_REDUCED_MII_POLL|DC_21143_NWAY;
1882 case DC_DEVICEID_82C115:
1883 sc->dc_type = DC_TYPE_PNICII;
1884 sc->dc_flags |= DC_TX_POLL|DC_TX_USE_TX_INTR|DC_128BIT_HASH;
1885 sc->dc_flags |= DC_REDUCED_MII_POLL|DC_21143_NWAY;
1887 case DC_DEVICEID_82C168:
1888 sc->dc_type = DC_TYPE_PNIC;
1889 sc->dc_flags |= DC_TX_STORENFWD|DC_TX_INTR_ALWAYS;
1890 sc->dc_flags |= DC_PNIC_RX_BUG_WAR;
1891 sc->dc_pnic_rx_buf = malloc(DC_RXLEN * 5, M_DEVBUF, M_WAITOK);
1892 if (revision < DC_REVISION_82C169)
1893 sc->dc_pmode = DC_PMODE_SYM;
1895 case DC_DEVICEID_AX88140A:
1896 sc->dc_type = DC_TYPE_ASIX;
1897 sc->dc_flags |= DC_TX_USE_TX_INTR|DC_TX_INTR_FIRSTFRAG;
1898 sc->dc_flags |= DC_REDUCED_MII_POLL;
1899 sc->dc_pmode = DC_PMODE_MII;
1901 case DC_DEVICEID_RS7112:
1902 sc->dc_type = DC_TYPE_CONEXANT;
1903 sc->dc_flags |= DC_TX_INTR_ALWAYS;
1904 sc->dc_flags |= DC_REDUCED_MII_POLL;
1905 sc->dc_pmode = DC_PMODE_MII;
1906 dc_read_srom(sc, sc->dc_romwidth);
1909 device_printf(dev, "unknown device: %x\n", sc->dc_info->dc_did);
1913 /* Save the cache line size. */
1914 if (DC_IS_DAVICOM(sc))
1915 sc->dc_cachesize = 0;
1917 sc->dc_cachesize = pci_read_config(dev,
1918 DC_PCI_CFLT, 4) & 0xFF;
1920 /* Reset the adapter. */
1923 /* Take 21143 out of snooze mode */
1924 if (DC_IS_INTEL(sc)) {
1925 command = pci_read_config(dev, DC_PCI_CFDD, 4);
1926 command &= ~(DC_CFDD_SNOOZE_MODE|DC_CFDD_SLEEP_MODE);
1927 pci_write_config(dev, DC_PCI_CFDD, command, 4);
1931 * Try to learn something about the supported media.
1932 * We know that ASIX and ADMtek and Davicom devices
1933 * will *always* be using MII media, so that's a no-brainer.
1934 * The tricky ones are the Macronix/PNIC II and the
1937 if (DC_IS_INTEL(sc))
1938 dc_parse_21143_srom(sc);
1939 else if (DC_IS_MACRONIX(sc) || DC_IS_PNICII(sc)) {
1940 if (sc->dc_type == DC_TYPE_98713)
1941 sc->dc_pmode = DC_PMODE_MII;
1943 sc->dc_pmode = DC_PMODE_SYM;
1944 } else if (!sc->dc_pmode)
1945 sc->dc_pmode = DC_PMODE_MII;
1948 * Get station address from the EEPROM.
1950 switch(sc->dc_type) {
1952 case DC_TYPE_98713A:
1954 case DC_TYPE_PNICII:
1955 dc_read_eeprom(sc, (caddr_t)&mac_offset,
1956 (DC_EE_NODEADDR_OFFSET / 2), 1, 0);
1957 dc_read_eeprom(sc, (caddr_t)&eaddr, (mac_offset / 2), 3, 0);
1960 dc_read_eeprom(sc, (caddr_t)&eaddr, 0, 3, 1);
1962 case DC_TYPE_DM9102:
1965 dc_read_eeprom(sc, (caddr_t)&eaddr, DC_EE_NODEADDR, 3, 0);
1969 bcopy(&sc->dc_srom[DC_AL_EE_NODEADDR], (caddr_t)&eaddr,
1971 dc_read_eeprom(sc, (caddr_t)&eaddr, DC_AL_EE_NODEADDR, 3, 0);
1973 case DC_TYPE_CONEXANT:
1974 bcopy(sc->dc_srom + DC_CONEXANT_EE_NODEADDR, &eaddr, 6);
1977 dc_read_eeprom(sc, (caddr_t)&eaddr, DC_EE_NODEADDR, 3, 0);
1981 sc->dc_ldata = contigmalloc(sizeof(struct dc_list_data), M_DEVBUF,
1982 M_WAITOK, 0, 0xffffffff, PAGE_SIZE, 0);
1984 if (sc->dc_ldata == NULL) {
1985 device_printf(dev, "no memory for list buffers!\n");
1990 bzero(sc->dc_ldata, sizeof(struct dc_list_data));
1993 ifp->if_mtu = ETHERMTU;
1994 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
1995 ifp->if_ioctl = dc_ioctl;
1996 ifp->if_start = dc_start;
1997 #ifdef DEVICE_POLLING
1998 ifp->if_poll = dc_poll;
2000 ifp->if_watchdog = dc_watchdog;
2001 ifp->if_init = dc_init;
2002 ifp->if_baudrate = 10000000;
2003 ifq_set_maxlen(&ifp->if_snd, DC_TX_LIST_CNT - 1);
2004 ifq_set_ready(&ifp->if_snd);
2007 * Do MII setup. If this is a 21143, check for a PHY on the
2008 * MII bus after applying any necessary fixups to twiddle the
2009 * GPIO bits. If we don't end up finding a PHY, restore the
2010 * old selection (SIA only or SIA/SYM) and attach the dcphy
2013 if (DC_IS_INTEL(sc)) {
2014 dc_apply_fixup(sc, IFM_AUTO);
2016 sc->dc_pmode = DC_PMODE_MII;
2019 error = mii_phy_probe(dev, &sc->dc_miibus,
2020 dc_ifmedia_upd, dc_ifmedia_sts);
2022 if (error && DC_IS_INTEL(sc)) {
2024 if (sc->dc_pmode != DC_PMODE_SIA)
2025 sc->dc_pmode = DC_PMODE_SYM;
2026 sc->dc_flags |= DC_21143_NWAY;
2027 mii_phy_probe(dev, &sc->dc_miibus,
2028 dc_ifmedia_upd, dc_ifmedia_sts);
2030 * For non-MII cards, we need to have the 21143
2031 * drive the LEDs. Except there are some systems
2032 * like the NEC VersaPro NoteBook PC which have no
2033 * LEDs, and twiddling these bits has adverse effects
2034 * on them. (I.e. you suddenly can't get a link.)
2036 if (pci_read_config(dev, DC_PCI_CSID, 4) != 0x80281033)
2037 sc->dc_flags |= DC_TULIP_LEDS;
2042 device_printf(dev, "MII without any PHY!\n");
2048 * Call MI attach routine.
2050 ether_ifattach(ifp, eaddr);
2052 if (DC_IS_ADMTEK(sc)) {
2054 * Set automatic TX underrun recovery for the ADMtek chips
2056 DC_SETBIT(sc, DC_AL_CR, DC_AL_CR_ATUR);
2060 * Tell the upper layer(s) we support long frames.
2062 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
2064 error = bus_setup_intr(dev, sc->dc_irq, INTR_TYPE_NET,
2065 dc_intr, sc, &sc->dc_intrhand, NULL);
2067 ether_ifdetach(ifp);
2068 device_printf(dev, "couldn't set up irq\n");
2079 static int dc_detach(dev)
2082 struct dc_softc *sc = device_get_softc(dev);
2083 struct ifnet *ifp = &sc->arpcom.ac_if;
2084 struct dc_mediainfo *m;
2088 if (device_is_attached(dev)) {
2090 ether_ifdetach(ifp);
2094 device_delete_child(dev, sc->dc_miibus);
2095 bus_generic_detach(dev);
2097 if (sc->dc_intrhand)
2098 bus_teardown_intr(dev, sc->dc_irq, sc->dc_intrhand);
2103 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->dc_irq);
2105 bus_release_resource(dev, DC_RES, DC_RID, sc->dc_res);
2108 contigfree(sc->dc_ldata, sizeof(struct dc_list_data), M_DEVBUF);
2109 if (sc->dc_pnic_rx_buf != NULL)
2110 free(sc->dc_pnic_rx_buf, M_DEVBUF);
2112 while(sc->dc_mi != NULL) {
2113 m = sc->dc_mi->dc_next;
2114 free(sc->dc_mi, M_DEVBUF);
2119 free(sc->dc_srom, M_DEVBUF);
2125 * Initialize the transmit descriptors.
2127 static int dc_list_tx_init(sc)
2128 struct dc_softc *sc;
2130 struct dc_chain_data *cd;
2131 struct dc_list_data *ld;
2136 for (i = 0; i < DC_TX_LIST_CNT; i++) {
2137 if (i == (DC_TX_LIST_CNT - 1)) {
2138 ld->dc_tx_list[i].dc_next =
2139 vtophys(&ld->dc_tx_list[0]);
2141 ld->dc_tx_list[i].dc_next =
2142 vtophys(&ld->dc_tx_list[i + 1]);
2144 cd->dc_tx_chain[i] = NULL;
2145 ld->dc_tx_list[i].dc_data = 0;
2146 ld->dc_tx_list[i].dc_ctl = 0;
2149 cd->dc_tx_prod = cd->dc_tx_cons = cd->dc_tx_cnt = 0;
2156 * Initialize the RX descriptors and allocate mbufs for them. Note that
2157 * we arrange the descriptors in a closed ring, so that the last descriptor
2158 * points back to the first.
2160 static int dc_list_rx_init(sc)
2161 struct dc_softc *sc;
2163 struct dc_chain_data *cd;
2164 struct dc_list_data *ld;
2170 for (i = 0; i < DC_RX_LIST_CNT; i++) {
2171 if (dc_newbuf(sc, i, NULL) == ENOBUFS)
2173 if (i == (DC_RX_LIST_CNT - 1)) {
2174 ld->dc_rx_list[i].dc_next =
2175 vtophys(&ld->dc_rx_list[0]);
2177 ld->dc_rx_list[i].dc_next =
2178 vtophys(&ld->dc_rx_list[i + 1]);
2188 * Initialize an RX descriptor and attach an MBUF cluster.
2190 static int dc_newbuf(sc, i, m)
2191 struct dc_softc *sc;
2195 struct mbuf *m_new = NULL;
2198 c = &sc->dc_ldata->dc_rx_list[i];
2201 m_new = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR);
2204 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
2207 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
2208 m_new->m_data = m_new->m_ext.ext_buf;
2211 m_adj(m_new, sizeof(u_int64_t));
2214 * If this is a PNIC chip, zero the buffer. This is part
2215 * of the workaround for the receive bug in the 82c168 and
2218 if (sc->dc_flags & DC_PNIC_RX_BUG_WAR)
2219 bzero((char *)mtod(m_new, char *), m_new->m_len);
2221 sc->dc_cdata.dc_rx_chain[i] = m_new;
2222 c->dc_data = vtophys(mtod(m_new, caddr_t));
2223 c->dc_ctl = DC_RXCTL_RLINK | DC_RXLEN;
2224 c->dc_status = DC_RXSTAT_OWN;
2231 * The PNIC chip has a terrible bug in it that manifests itself during
2232 * periods of heavy activity. The exact mode of failure if difficult to
2233 * pinpoint: sometimes it only happens in promiscuous mode, sometimes it
2234 * will happen on slow machines. The bug is that sometimes instead of
2235 * uploading one complete frame during reception, it uploads what looks
2236 * like the entire contents of its FIFO memory. The frame we want is at
2237 * the end of the whole mess, but we never know exactly how much data has
2238 * been uploaded, so salvaging the frame is hard.
2240 * There is only one way to do it reliably, and it's disgusting.
2241 * Here's what we know:
2243 * - We know there will always be somewhere between one and three extra
2244 * descriptors uploaded.
2246 * - We know the desired received frame will always be at the end of the
2247 * total data upload.
2249 * - We know the size of the desired received frame because it will be
2250 * provided in the length field of the status word in the last descriptor.
2252 * Here's what we do:
2254 * - When we allocate buffers for the receive ring, we bzero() them.
2255 * This means that we know that the buffer contents should be all
2256 * zeros, except for data uploaded by the chip.
2258 * - We also force the PNIC chip to upload frames that include the
2259 * ethernet CRC at the end.
2261 * - We gather all of the bogus frame data into a single buffer.
2263 * - We then position a pointer at the end of this buffer and scan
2264 * backwards until we encounter the first non-zero byte of data.
2265 * This is the end of the received frame. We know we will encounter
2266 * some data at the end of the frame because the CRC will always be
2267 * there, so even if the sender transmits a packet of all zeros,
2268 * we won't be fooled.
2270 * - We know the size of the actual received frame, so we subtract
2271 * that value from the current pointer location. This brings us
2272 * to the start of the actual received packet.
2274 * - We copy this into an mbuf and pass it on, along with the actual
2277 * The performance hit is tremendous, but it beats dropping frames all
2281 #define DC_WHOLEFRAME (DC_RXSTAT_FIRSTFRAG|DC_RXSTAT_LASTFRAG)
2282 static void dc_pnic_rx_bug_war(sc, idx)
2283 struct dc_softc *sc;
2286 struct dc_desc *cur_rx;
2287 struct dc_desc *c = NULL;
2288 struct mbuf *m = NULL;
2291 u_int32_t rxstat = 0;
2293 i = sc->dc_pnic_rx_bug_save;
2294 cur_rx = &sc->dc_ldata->dc_rx_list[idx];
2295 ptr = sc->dc_pnic_rx_buf;
2296 bzero(ptr, DC_RXLEN * 5);
2298 /* Copy all the bytes from the bogus buffers. */
2300 c = &sc->dc_ldata->dc_rx_list[i];
2301 rxstat = c->dc_status;
2302 m = sc->dc_cdata.dc_rx_chain[i];
2303 bcopy(mtod(m, char *), ptr, DC_RXLEN);
2305 /* If this is the last buffer, break out. */
2306 if (i == idx || rxstat & DC_RXSTAT_LASTFRAG)
2308 dc_newbuf(sc, i, m);
2309 DC_INC(i, DC_RX_LIST_CNT);
2312 /* Find the length of the actual receive frame. */
2313 total_len = DC_RXBYTES(rxstat);
2315 /* Scan backwards until we hit a non-zero byte. */
2320 if ((uintptr_t)(ptr) & 0x3)
2323 /* Now find the start of the frame. */
2325 if (ptr < sc->dc_pnic_rx_buf)
2326 ptr = sc->dc_pnic_rx_buf;
2329 * Now copy the salvaged frame to the last mbuf and fake up
2330 * the status word to make it look like a successful
2333 dc_newbuf(sc, i, m);
2334 bcopy(ptr, mtod(m, char *), total_len);
2335 cur_rx->dc_status = rxstat | DC_RXSTAT_FIRSTFRAG;
2341 * This routine searches the RX ring for dirty descriptors in the
2342 * event that the rxeof routine falls out of sync with the chip's
2343 * current descriptor pointer. This may happen sometimes as a result
2344 * of a "no RX buffer available" condition that happens when the chip
2345 * consumes all of the RX buffers before the driver has a chance to
2346 * process the RX ring. This routine may need to be called more than
2347 * once to bring the driver back in sync with the chip, however we
2348 * should still be getting RX DONE interrupts to drive the search
2349 * for new packets in the RX ring, so we should catch up eventually.
2351 static int dc_rx_resync(sc)
2352 struct dc_softc *sc;
2355 struct dc_desc *cur_rx;
2357 pos = sc->dc_cdata.dc_rx_prod;
2359 for (i = 0; i < DC_RX_LIST_CNT; i++) {
2360 cur_rx = &sc->dc_ldata->dc_rx_list[pos];
2361 if (!(cur_rx->dc_status & DC_RXSTAT_OWN))
2363 DC_INC(pos, DC_RX_LIST_CNT);
2366 /* If the ring really is empty, then just return. */
2367 if (i == DC_RX_LIST_CNT)
2370 /* We've fallen behing the chip: catch it. */
2371 sc->dc_cdata.dc_rx_prod = pos;
2377 * A frame has been uploaded: pass the resulting mbuf chain up to
2378 * the higher level protocols.
2380 static void dc_rxeof(sc)
2381 struct dc_softc *sc;
2385 struct dc_desc *cur_rx;
2386 int i, total_len = 0;
2389 ifp = &sc->arpcom.ac_if;
2390 i = sc->dc_cdata.dc_rx_prod;
2392 while(!(sc->dc_ldata->dc_rx_list[i].dc_status & DC_RXSTAT_OWN)) {
2394 #ifdef DEVICE_POLLING
2395 if (ifp->if_flags & IFF_POLLING) {
2396 if (sc->rxcycles <= 0)
2400 #endif /* DEVICE_POLLING */
2401 cur_rx = &sc->dc_ldata->dc_rx_list[i];
2402 rxstat = cur_rx->dc_status;
2403 m = sc->dc_cdata.dc_rx_chain[i];
2404 total_len = DC_RXBYTES(rxstat);
2406 if (sc->dc_flags & DC_PNIC_RX_BUG_WAR) {
2407 if ((rxstat & DC_WHOLEFRAME) != DC_WHOLEFRAME) {
2408 if (rxstat & DC_RXSTAT_FIRSTFRAG)
2409 sc->dc_pnic_rx_bug_save = i;
2410 if ((rxstat & DC_RXSTAT_LASTFRAG) == 0) {
2411 DC_INC(i, DC_RX_LIST_CNT);
2414 dc_pnic_rx_bug_war(sc, i);
2415 rxstat = cur_rx->dc_status;
2416 total_len = DC_RXBYTES(rxstat);
2420 sc->dc_cdata.dc_rx_chain[i] = NULL;
2423 * If an error occurs, update stats, clear the
2424 * status word and leave the mbuf cluster in place:
2425 * it should simply get re-used next time this descriptor
2426 * comes up in the ring. However, don't report long
2427 * frames as errors since they could be vlans
2429 if ((rxstat & DC_RXSTAT_RXERR)){
2430 if (!(rxstat & DC_RXSTAT_GIANT) ||
2431 (rxstat & (DC_RXSTAT_CRCERR | DC_RXSTAT_DRIBBLE |
2432 DC_RXSTAT_MIIERE | DC_RXSTAT_COLLSEEN |
2433 DC_RXSTAT_RUNT | DC_RXSTAT_DE))) {
2435 if (rxstat & DC_RXSTAT_COLLSEEN)
2436 ifp->if_collisions++;
2437 dc_newbuf(sc, i, m);
2438 if (rxstat & DC_RXSTAT_CRCERR) {
2439 DC_INC(i, DC_RX_LIST_CNT);
2448 /* No errors; receive the packet. */
2449 total_len -= ETHER_CRC_LEN;
2453 * On the x86 we do not have alignment problems, so try to
2454 * allocate a new buffer for the receive ring, and pass up
2455 * the one where the packet is already, saving the expensive
2456 * copy done in m_devget().
2457 * If we are on an architecture with alignment problems, or
2458 * if the allocation fails, then use m_devget and leave the
2459 * existing buffer in the receive ring.
2461 if (dc_quick && dc_newbuf(sc, i, NULL) == 0) {
2462 m->m_pkthdr.rcvif = ifp;
2463 m->m_pkthdr.len = m->m_len = total_len;
2464 DC_INC(i, DC_RX_LIST_CNT);
2470 m0 = m_devget(mtod(m, char *) - ETHER_ALIGN,
2471 total_len + ETHER_ALIGN, 0, ifp, NULL);
2472 dc_newbuf(sc, i, m);
2473 DC_INC(i, DC_RX_LIST_CNT);
2478 m_adj(m0, ETHER_ALIGN);
2483 (*ifp->if_input)(ifp, m);
2486 sc->dc_cdata.dc_rx_prod = i;
2490 * A frame was downloaded to the chip. It's safe for us to clean up
2496 struct dc_softc *sc;
2498 struct dc_desc *cur_tx = NULL;
2502 ifp = &sc->arpcom.ac_if;
2505 * Go through our tx list and free mbufs for those
2506 * frames that have been transmitted.
2508 idx = sc->dc_cdata.dc_tx_cons;
2509 while(idx != sc->dc_cdata.dc_tx_prod) {
2512 cur_tx = &sc->dc_ldata->dc_tx_list[idx];
2513 txstat = cur_tx->dc_status;
2515 if (txstat & DC_TXSTAT_OWN)
2518 if (!(cur_tx->dc_ctl & DC_TXCTL_LASTFRAG) ||
2519 cur_tx->dc_ctl & DC_TXCTL_SETUP) {
2520 if (cur_tx->dc_ctl & DC_TXCTL_SETUP) {
2522 * Yes, the PNIC is so brain damaged
2523 * that it will sometimes generate a TX
2524 * underrun error while DMAing the RX
2525 * filter setup frame. If we detect this,
2526 * we have to send the setup frame again,
2527 * or else the filter won't be programmed
2530 if (DC_IS_PNIC(sc)) {
2531 if (txstat & DC_TXSTAT_ERRSUM)
2534 sc->dc_cdata.dc_tx_chain[idx] = NULL;
2536 sc->dc_cdata.dc_tx_cnt--;
2537 DC_INC(idx, DC_TX_LIST_CNT);
2541 if (DC_IS_CONEXANT(sc)) {
2543 * For some reason Conexant chips like
2544 * setting the CARRLOST flag even when
2545 * the carrier is there. In CURRENT we
2546 * have the same problem for Xircom
2549 if (/*sc->dc_type == DC_TYPE_21143 &&*/
2550 sc->dc_pmode == DC_PMODE_MII &&
2551 ((txstat & 0xFFFF) & ~(DC_TXSTAT_ERRSUM|
2552 DC_TXSTAT_NOCARRIER)))
2553 txstat &= ~DC_TXSTAT_ERRSUM;
2555 if (/*sc->dc_type == DC_TYPE_21143 &&*/
2556 sc->dc_pmode == DC_PMODE_MII &&
2557 ((txstat & 0xFFFF) & ~(DC_TXSTAT_ERRSUM|
2558 DC_TXSTAT_NOCARRIER|DC_TXSTAT_CARRLOST)))
2559 txstat &= ~DC_TXSTAT_ERRSUM;
2562 if (txstat & DC_TXSTAT_ERRSUM) {
2564 if (txstat & DC_TXSTAT_EXCESSCOLL)
2565 ifp->if_collisions++;
2566 if (txstat & DC_TXSTAT_LATECOLL)
2567 ifp->if_collisions++;
2568 if (!(txstat & DC_TXSTAT_UNDERRUN)) {
2574 ifp->if_collisions += (txstat & DC_TXSTAT_COLLCNT) >> 3;
2577 if (sc->dc_cdata.dc_tx_chain[idx] != NULL) {
2578 m_freem(sc->dc_cdata.dc_tx_chain[idx]);
2579 sc->dc_cdata.dc_tx_chain[idx] = NULL;
2582 sc->dc_cdata.dc_tx_cnt--;
2583 DC_INC(idx, DC_TX_LIST_CNT);
2586 if (idx != sc->dc_cdata.dc_tx_cons) {
2587 /* some buffers have been freed */
2588 sc->dc_cdata.dc_tx_cons = idx;
2589 ifp->if_flags &= ~IFF_OACTIVE;
2591 ifp->if_timer = (sc->dc_cdata.dc_tx_cnt == 0) ? 0 : 5;
2596 static void dc_tick(xsc)
2599 struct dc_softc *sc = xsc;
2600 struct ifnet *ifp = &sc->arpcom.ac_if;
2601 struct mii_data *mii;
2606 mii = device_get_softc(sc->dc_miibus);
2608 if (sc->dc_flags & DC_REDUCED_MII_POLL) {
2609 if (sc->dc_flags & DC_21143_NWAY) {
2610 r = CSR_READ_4(sc, DC_10BTSTAT);
2611 if (IFM_SUBTYPE(mii->mii_media_active) ==
2612 IFM_100_TX && (r & DC_TSTAT_LS100)) {
2616 if (IFM_SUBTYPE(mii->mii_media_active) ==
2617 IFM_10_T && (r & DC_TSTAT_LS10)) {
2621 if (sc->dc_link == 0)
2624 r = CSR_READ_4(sc, DC_ISR);
2625 if ((r & DC_ISR_RX_STATE) == DC_RXSTATE_WAIT &&
2626 sc->dc_cdata.dc_tx_cnt == 0)
2628 if (!(mii->mii_media_status & IFM_ACTIVE))
2635 * When the init routine completes, we expect to be able to send
2636 * packets right away, and in fact the network code will send a
2637 * gratuitous ARP the moment the init routine marks the interface
2638 * as running. However, even though the MAC may have been initialized,
2639 * there may be a delay of a few seconds before the PHY completes
2640 * autonegotiation and the link is brought up. Any transmissions
2641 * made during that delay will be lost. Dealing with this is tricky:
2642 * we can't just pause in the init routine while waiting for the
2643 * PHY to come ready since that would bring the whole system to
2644 * a screeching halt for several seconds.
2646 * What we do here is prevent the TX start routine from sending
2647 * any packets until a link has been established. After the
2648 * interface has been initialized, the tick routine will poll
2649 * the state of the PHY until the IFM_ACTIVE flag is set. Until
2650 * that time, packets will stay in the send queue, and once the
2651 * link comes up, they will be flushed out to the wire.
2655 if (mii->mii_media_status & IFM_ACTIVE &&
2656 IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
2658 if (!ifq_is_empty(&ifp->if_snd))
2663 if (sc->dc_flags & DC_21143_NWAY && !sc->dc_link)
2664 callout_reset(&sc->dc_stat_timer, hz / 10, dc_tick, sc);
2666 callout_reset(&sc->dc_stat_timer, hz, dc_tick, sc);
2672 * A transmit underrun has occurred. Back off the transmit threshold,
2673 * or switch to store and forward mode if we have to.
2675 static void dc_tx_underrun(sc)
2676 struct dc_softc *sc;
2681 if (DC_IS_DAVICOM(sc))
2684 if (DC_IS_INTEL(sc)) {
2686 * The real 21143 requires that the transmitter be idle
2687 * in order to change the transmit threshold or store
2688 * and forward state.
2690 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON);
2692 for (i = 0; i < DC_TIMEOUT; i++) {
2693 isr = CSR_READ_4(sc, DC_ISR);
2694 if (isr & DC_ISR_TX_IDLE)
2698 if (i == DC_TIMEOUT) {
2699 if_printf(&sc->arpcom.ac_if,
2700 "failed to force tx to idle state\n");
2705 if_printf(&sc->arpcom.ac_if, "TX underrun -- ");
2706 sc->dc_txthresh += DC_TXTHRESH_INC;
2707 if (sc->dc_txthresh > DC_TXTHRESH_MAX) {
2708 printf("using store and forward mode\n");
2709 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_STORENFWD);
2711 printf("increasing TX threshold\n");
2712 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_TX_THRESH);
2713 DC_SETBIT(sc, DC_NETCFG, sc->dc_txthresh);
2716 if (DC_IS_INTEL(sc))
2717 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON);
2722 #ifdef DEVICE_POLLING
2725 dc_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
2727 struct dc_softc *sc = ifp->if_softc;
2732 /* Disable interrupts */
2733 CSR_WRITE_4(sc, DC_IMR, 0x00000000);
2735 case POLL_DEREGISTER:
2736 /* Re-enable interrupts. */
2737 CSR_WRITE_4(sc, DC_IMR, DC_INTRS);
2740 sc->rxcycles = count;
2743 if ((ifp->if_flags & IFF_OACTIVE) == 0 && !ifq_is_empty(&ifp->if_snd))
2746 case POLL_AND_CHECK_STATUS:
2747 sc->rxcycles = count;
2750 if ((ifp->if_flags & IFF_OACTIVE) == 0 && !ifq_is_empty(&ifp->if_snd))
2752 status = CSR_READ_4(sc, DC_ISR);
2753 status &= (DC_ISR_RX_WATDOGTIMEO|DC_ISR_RX_NOBUF|
2754 DC_ISR_TX_NOBUF|DC_ISR_TX_IDLE|DC_ISR_TX_UNDERRUN|
2758 /* ack what we have */
2759 CSR_WRITE_4(sc, DC_ISR, status);
2761 if (status & (DC_ISR_RX_WATDOGTIMEO|DC_ISR_RX_NOBUF) ) {
2762 u_int32_t r = CSR_READ_4(sc, DC_FRAMESDISCARDED);
2763 ifp->if_ierrors += (r & 0xffff) + ((r >> 17) & 0x7ff);
2765 if (dc_rx_resync(sc))
2768 /* restart transmit unit if necessary */
2769 if (status & DC_ISR_TX_IDLE && sc->dc_cdata.dc_tx_cnt)
2770 CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF);
2772 if (status & DC_ISR_TX_UNDERRUN)
2775 if (status & DC_ISR_BUS_ERR) {
2776 if_printf(ifp, "dc_poll: bus error\n");
2783 #endif /* DEVICE_POLLING */
2785 static void dc_intr(arg)
2788 struct dc_softc *sc;
2794 if (sc->suspended) {
2798 ifp = &sc->arpcom.ac_if;
2800 if ( (CSR_READ_4(sc, DC_ISR) & DC_INTRS) == 0)
2803 /* Suppress unwanted interrupts */
2804 if (!(ifp->if_flags & IFF_UP)) {
2805 if (CSR_READ_4(sc, DC_ISR) & DC_INTRS)
2810 /* Disable interrupts. */
2811 CSR_WRITE_4(sc, DC_IMR, 0x00000000);
2813 while((status = CSR_READ_4(sc, DC_ISR)) & DC_INTRS) {
2815 CSR_WRITE_4(sc, DC_ISR, status);
2817 if (status & DC_ISR_RX_OK) {
2819 curpkts = ifp->if_ipackets;
2821 if (curpkts == ifp->if_ipackets) {
2822 while(dc_rx_resync(sc))
2827 if (status & (DC_ISR_TX_OK|DC_ISR_TX_NOBUF))
2830 if (status & DC_ISR_TX_IDLE) {
2832 if (sc->dc_cdata.dc_tx_cnt) {
2833 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON);
2834 CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF);
2838 if (status & DC_ISR_TX_UNDERRUN)
2841 if ((status & DC_ISR_RX_WATDOGTIMEO)
2842 || (status & DC_ISR_RX_NOBUF)) {
2844 curpkts = ifp->if_ipackets;
2846 if (curpkts == ifp->if_ipackets) {
2847 while(dc_rx_resync(sc))
2852 if (status & DC_ISR_BUS_ERR) {
2858 /* Re-enable interrupts. */
2859 CSR_WRITE_4(sc, DC_IMR, DC_INTRS);
2861 if (!ifq_is_empty(&ifp->if_snd))
2868 * Encapsulate an mbuf chain in a descriptor by coupling the mbuf data
2869 * pointers to the fragment pointers.
2871 static int dc_encap(sc, m_head, txidx)
2872 struct dc_softc *sc;
2873 struct mbuf *m_head;
2876 struct dc_desc *f = NULL;
2878 int frag, cur, cnt = 0;
2881 * Start packing the mbufs in this chain into
2882 * the fragment pointers. Stop when we run out
2883 * of fragments or hit the end of the mbuf chain.
2886 cur = frag = *txidx;
2888 for (m = m_head; m != NULL; m = m->m_next) {
2889 if (m->m_len != 0) {
2890 if (sc->dc_flags & DC_TX_ADMTEK_WAR) {
2891 if (*txidx != sc->dc_cdata.dc_tx_prod &&
2892 frag == (DC_TX_LIST_CNT - 1))
2895 if ((DC_TX_LIST_CNT -
2896 (sc->dc_cdata.dc_tx_cnt + cnt)) < 5)
2899 f = &sc->dc_ldata->dc_tx_list[frag];
2900 f->dc_ctl = DC_TXCTL_TLINK | m->m_len;
2903 f->dc_ctl |= DC_TXCTL_FIRSTFRAG;
2905 f->dc_status = DC_TXSTAT_OWN;
2906 f->dc_data = vtophys(mtod(m, vm_offset_t));
2908 DC_INC(frag, DC_TX_LIST_CNT);
2916 sc->dc_cdata.dc_tx_cnt += cnt;
2917 sc->dc_cdata.dc_tx_chain[cur] = m_head;
2918 sc->dc_ldata->dc_tx_list[cur].dc_ctl |= DC_TXCTL_LASTFRAG;
2919 if (sc->dc_flags & DC_TX_INTR_FIRSTFRAG)
2920 sc->dc_ldata->dc_tx_list[*txidx].dc_ctl |= DC_TXCTL_FINT;
2921 if (sc->dc_flags & DC_TX_INTR_ALWAYS)
2922 sc->dc_ldata->dc_tx_list[cur].dc_ctl |= DC_TXCTL_FINT;
2923 if (sc->dc_flags & DC_TX_USE_TX_INTR && sc->dc_cdata.dc_tx_cnt > 64)
2924 sc->dc_ldata->dc_tx_list[cur].dc_ctl |= DC_TXCTL_FINT;
2925 sc->dc_ldata->dc_tx_list[*txidx].dc_status = DC_TXSTAT_OWN;
2932 * Main transmit routine. To avoid having to do mbuf copies, we put pointers
2933 * to the mbuf data regions directly in the transmit lists. We also save a
2934 * copy of the pointers since the transmit list fragment pointers are
2935 * physical addresses.
2938 static void dc_start(ifp)
2941 struct dc_softc *sc;
2942 struct mbuf *m_head = NULL, *m_new;
2943 int did_defrag, idx;
2950 if (ifp->if_flags & IFF_OACTIVE)
2953 idx = sc->dc_cdata.dc_tx_prod;
2955 while(sc->dc_cdata.dc_tx_chain[idx] == NULL) {
2957 m_head = ifq_poll(&ifp->if_snd);
2961 if (sc->dc_flags & DC_TX_COALESCE &&
2962 m_head->m_next != NULL) {
2964 * Check first if coalescing allows us to queue
2965 * the packet. We don't want to loose it if
2966 * the TX queue is full.
2968 if ((sc->dc_flags & DC_TX_ADMTEK_WAR) &&
2969 idx != sc->dc_cdata.dc_tx_prod &&
2970 idx == (DC_TX_LIST_CNT - 1)) {
2971 ifp->if_flags |= IFF_OACTIVE;
2974 if ((DC_TX_LIST_CNT - sc->dc_cdata.dc_tx_cnt) < 5) {
2975 ifp->if_flags |= IFF_OACTIVE;
2979 /* only coalesce if have >1 mbufs */
2980 m_new = m_defrag_nofree(m_head, MB_DONTWAIT);
2981 if (m_new == NULL) {
2982 ifp->if_flags |= IFF_OACTIVE;
2990 if (dc_encap(sc, m_head, &idx)) {
2993 m_new = ifq_dequeue(&ifp->if_snd);
2996 ifp->if_flags |= IFF_OACTIVE;
3000 m_new = ifq_dequeue(&ifp->if_snd);
3005 * If there's a BPF listener, bounce a copy of this frame
3008 BPF_MTAP(ifp, m_head);
3010 if (sc->dc_flags & DC_TX_ONE) {
3011 ifp->if_flags |= IFF_OACTIVE;
3017 sc->dc_cdata.dc_tx_prod = idx;
3018 if (!(sc->dc_flags & DC_TX_POLL))
3019 CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF);
3022 * Set a timeout in case the chip goes out to lunch.
3029 static void dc_init(xsc)
3032 struct dc_softc *sc = xsc;
3033 struct ifnet *ifp = &sc->arpcom.ac_if;
3034 struct mii_data *mii;
3038 mii = device_get_softc(sc->dc_miibus);
3041 * Cancel pending I/O and free all RX/TX buffers.
3047 * Set cache alignment and burst length.
3049 if (DC_IS_ASIX(sc) || DC_IS_DAVICOM(sc))
3050 CSR_WRITE_4(sc, DC_BUSCTL, 0);
3052 CSR_WRITE_4(sc, DC_BUSCTL, DC_BUSCTL_MRME|DC_BUSCTL_MRLE);
3054 * Evenly share the bus between receive and transmit process.
3056 if (DC_IS_INTEL(sc))
3057 DC_SETBIT(sc, DC_BUSCTL, DC_BUSCTL_ARBITRATION);
3058 if (DC_IS_DAVICOM(sc) || DC_IS_INTEL(sc)) {
3059 DC_SETBIT(sc, DC_BUSCTL, DC_BURSTLEN_USECA);
3061 DC_SETBIT(sc, DC_BUSCTL, DC_BURSTLEN_16LONG);
3063 if (sc->dc_flags & DC_TX_POLL)
3064 DC_SETBIT(sc, DC_BUSCTL, DC_TXPOLL_1);
3065 switch(sc->dc_cachesize) {
3067 DC_SETBIT(sc, DC_BUSCTL, DC_CACHEALIGN_32LONG);
3070 DC_SETBIT(sc, DC_BUSCTL, DC_CACHEALIGN_16LONG);
3073 DC_SETBIT(sc, DC_BUSCTL, DC_CACHEALIGN_8LONG);
3077 DC_SETBIT(sc, DC_BUSCTL, DC_CACHEALIGN_NONE);
3081 if (sc->dc_flags & DC_TX_STORENFWD)
3082 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_STORENFWD);
3084 if (sc->dc_txthresh > DC_TXTHRESH_MAX) {
3085 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_STORENFWD);
3087 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_STORENFWD);
3088 DC_SETBIT(sc, DC_NETCFG, sc->dc_txthresh);
3092 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_NO_RXCRC);
3093 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_TX_BACKOFF);
3095 if (DC_IS_MACRONIX(sc) || DC_IS_PNICII(sc)) {
3097 * The app notes for the 98713 and 98715A say that
3098 * in order to have the chips operate properly, a magic
3099 * number must be written to CSR16. Macronix does not
3100 * document the meaning of these bits so there's no way
3101 * to know exactly what they do. The 98713 has a magic
3102 * number all its own; the rest all use a different one.
3104 DC_CLRBIT(sc, DC_MX_MAGICPACKET, 0xFFFF0000);
3105 if (sc->dc_type == DC_TYPE_98713)
3106 DC_SETBIT(sc, DC_MX_MAGICPACKET, DC_MX_MAGIC_98713);
3108 DC_SETBIT(sc, DC_MX_MAGICPACKET, DC_MX_MAGIC_98715);
3111 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_TX_THRESH);
3112 DC_SETBIT(sc, DC_NETCFG, DC_TXTHRESH_MIN);
3114 /* Init circular RX list. */
3115 if (dc_list_rx_init(sc) == ENOBUFS) {
3116 if_printf(ifp, "initialization failed: no "
3117 "memory for rx buffers\n");
3124 * Init tx descriptors.
3126 dc_list_tx_init(sc);
3129 * Load the address of the RX list.
3131 CSR_WRITE_4(sc, DC_RXADDR, vtophys(&sc->dc_ldata->dc_rx_list[0]));
3132 CSR_WRITE_4(sc, DC_TXADDR, vtophys(&sc->dc_ldata->dc_tx_list[0]));
3135 * Enable interrupts.
3137 #ifdef DEVICE_POLLING
3139 * ... but only if we are not polling, and make sure they are off in
3140 * the case of polling. Some cards (e.g. fxp) turn interrupts on
3143 if (ifp->if_flags & IFF_POLLING)
3144 CSR_WRITE_4(sc, DC_IMR, 0x00000000);
3147 CSR_WRITE_4(sc, DC_IMR, DC_INTRS);
3148 CSR_WRITE_4(sc, DC_ISR, 0xFFFFFFFF);
3150 /* Enable transmitter. */
3151 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON);
3154 * If this is an Intel 21143 and we're not using the
3155 * MII port, program the LED control pins so we get
3156 * link and activity indications.
3158 if (sc->dc_flags & DC_TULIP_LEDS) {
3159 CSR_WRITE_4(sc, DC_WATCHDOG,
3160 DC_WDOG_CTLWREN|DC_WDOG_LINK|DC_WDOG_ACTIVITY);
3161 CSR_WRITE_4(sc, DC_WATCHDOG, 0);
3165 * Load the RX/multicast filter. We do this sort of late
3166 * because the filter programming scheme on the 21143 and
3167 * some clones requires DMAing a setup frame via the TX
3168 * engine, and we need the transmitter enabled for that.
3172 /* Enable receiver. */
3173 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ON);
3174 CSR_WRITE_4(sc, DC_RXSTART, 0xFFFFFFFF);
3177 dc_setcfg(sc, sc->dc_if_media);
3179 ifp->if_flags |= IFF_RUNNING;
3180 ifp->if_flags &= ~IFF_OACTIVE;
3184 /* Don't start the ticker if this is a homePNA link. */
3185 if (IFM_SUBTYPE(mii->mii_media.ifm_media) == IFM_HPNA_1)
3188 if (sc->dc_flags & DC_21143_NWAY)
3189 callout_reset(&sc->dc_stat_timer, hz/10, dc_tick, sc);
3191 callout_reset(&sc->dc_stat_timer, hz, dc_tick, sc);
3198 * Set media options.
3200 static int dc_ifmedia_upd(ifp)
3203 struct dc_softc *sc;
3204 struct mii_data *mii;
3205 struct ifmedia *ifm;
3208 mii = device_get_softc(sc->dc_miibus);
3210 ifm = &mii->mii_media;
3212 if (DC_IS_DAVICOM(sc) &&
3213 IFM_SUBTYPE(ifm->ifm_media) == IFM_HPNA_1)
3214 dc_setcfg(sc, ifm->ifm_media);
3222 * Report current media status.
3224 static void dc_ifmedia_sts(ifp, ifmr)
3226 struct ifmediareq *ifmr;
3228 struct dc_softc *sc;
3229 struct mii_data *mii;
3230 struct ifmedia *ifm;
3233 mii = device_get_softc(sc->dc_miibus);
3235 ifm = &mii->mii_media;
3236 if (DC_IS_DAVICOM(sc)) {
3237 if (IFM_SUBTYPE(ifm->ifm_media) == IFM_HPNA_1) {
3238 ifmr->ifm_active = ifm->ifm_media;
3239 ifmr->ifm_status = 0;
3243 ifmr->ifm_active = mii->mii_media_active;
3244 ifmr->ifm_status = mii->mii_media_status;
3249 static int dc_ioctl(ifp, command, data, cr)
3255 struct dc_softc *sc = ifp->if_softc;
3256 struct ifreq *ifr = (struct ifreq *) data;
3257 struct mii_data *mii;
3264 if (ifp->if_flags & IFF_UP) {
3265 int need_setfilt = (ifp->if_flags ^ sc->dc_if_flags) &
3266 (IFF_PROMISC | IFF_ALLMULTI);
3267 if (ifp->if_flags & IFF_RUNNING) {
3271 sc->dc_txthresh = 0;
3275 if (ifp->if_flags & IFF_RUNNING)
3278 sc->dc_if_flags = ifp->if_flags;
3288 mii = device_get_softc(sc->dc_miibus);
3289 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command);
3292 error = ether_ioctl(ifp, command, data);
3301 static void dc_watchdog(ifp)
3304 struct dc_softc *sc;
3309 if_printf(ifp, "watchdog timeout\n");
3315 if (!ifq_is_empty(&ifp->if_snd))
3322 * Stop the adapter and free any mbufs allocated to the
3325 static void dc_stop(sc)
3326 struct dc_softc *sc;
3331 ifp = &sc->arpcom.ac_if;
3334 callout_stop(&sc->dc_stat_timer);
3336 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
3338 DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_RX_ON|DC_NETCFG_TX_ON));
3339 CSR_WRITE_4(sc, DC_IMR, 0x00000000);
3340 CSR_WRITE_4(sc, DC_TXADDR, 0x00000000);
3341 CSR_WRITE_4(sc, DC_RXADDR, 0x00000000);
3345 * Free data in the RX lists.
3347 for (i = 0; i < DC_RX_LIST_CNT; i++) {
3348 if (sc->dc_cdata.dc_rx_chain[i] != NULL) {
3349 m_freem(sc->dc_cdata.dc_rx_chain[i]);
3350 sc->dc_cdata.dc_rx_chain[i] = NULL;
3353 bzero((char *)&sc->dc_ldata->dc_rx_list,
3354 sizeof(sc->dc_ldata->dc_rx_list));
3357 * Free the TX list buffers.
3359 for (i = 0; i < DC_TX_LIST_CNT; i++) {
3360 if (sc->dc_cdata.dc_tx_chain[i] != NULL) {
3361 if ((sc->dc_ldata->dc_tx_list[i].dc_ctl &
3363 !(sc->dc_ldata->dc_tx_list[i].dc_ctl &
3364 DC_TXCTL_LASTFRAG)) {
3365 sc->dc_cdata.dc_tx_chain[i] = NULL;
3368 m_freem(sc->dc_cdata.dc_tx_chain[i]);
3369 sc->dc_cdata.dc_tx_chain[i] = NULL;
3373 bzero((char *)&sc->dc_ldata->dc_tx_list,
3374 sizeof(sc->dc_ldata->dc_tx_list));
3380 * Stop all chip I/O so that the kernel's probe routines don't
3381 * get confused by errant DMAs when rebooting.
3383 static void dc_shutdown(dev)
3386 struct dc_softc *sc;
3388 sc = device_get_softc(dev);
3396 * Device suspend routine. Stop the interface and save some PCI
3397 * settings in case the BIOS doesn't restore them properly on
3400 static int dc_suspend(dev)
3403 struct dc_softc *sc = device_get_softc(dev);
3410 for (i = 0; i < 5; i++)
3411 sc->saved_maps[i] = pci_read_config(dev, PCIR_MAPS + i * 4, 4);
3412 sc->saved_biosaddr = pci_read_config(dev, PCIR_BIOS, 4);
3413 sc->saved_intline = pci_read_config(dev, PCIR_INTLINE, 1);
3414 sc->saved_cachelnsz = pci_read_config(dev, PCIR_CACHELNSZ, 1);
3415 sc->saved_lattimer = pci_read_config(dev, PCIR_LATTIMER, 1);
3424 * Device resume routine. Restore some PCI settings in case the BIOS
3425 * doesn't, re-enable busmastering, and restart the interface if
3428 static int dc_resume(dev)
3431 struct dc_softc *sc = device_get_softc(dev);
3432 struct ifnet *ifp = &sc->arpcom.ac_if;
3439 /* better way to do this? */
3440 for (i = 0; i < 5; i++)
3441 pci_write_config(dev, PCIR_MAPS + i * 4, sc->saved_maps[i], 4);
3442 pci_write_config(dev, PCIR_BIOS, sc->saved_biosaddr, 4);
3443 pci_write_config(dev, PCIR_INTLINE, sc->saved_intline, 1);
3444 pci_write_config(dev, PCIR_CACHELNSZ, sc->saved_cachelnsz, 1);
3445 pci_write_config(dev, PCIR_LATTIMER, sc->saved_lattimer, 1);
3447 /* reenable busmastering */
3448 pci_enable_busmaster(dev);
3449 pci_enable_io(dev, DC_RES);
3451 /* reinitialize interface if necessary */
3452 if (ifp->if_flags & IFF_UP)