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 1.21 2005/02/20 04:12:32 joerg Exp $
35 * $FreeBSD: src/sys/pci/if_dc.c,v 1.9.2.45 2003/06/08 14:31:53 mux Exp $
39 * DEC "tulip" clone ethernet driver. Supports the DEC/Intel 21143
40 * series chips and several workalikes including the following:
42 * Macronix 98713/98715/98725/98727/98732 PMAC (www.macronix.com)
43 * Macronix/Lite-On 82c115 PNIC II (www.macronix.com)
44 * Lite-On 82c168/82c169 PNIC (www.litecom.com)
45 * ASIX Electronics AX88140A (www.asix.com.tw)
46 * ASIX Electronics AX88141 (www.asix.com.tw)
47 * ADMtek AL981 (www.admtek.com.tw)
48 * ADMtek AN985 (www.admtek.com.tw)
49 * Davicom DM9100, DM9102, DM9102A (www.davicom8.com)
50 * Accton EN1217 (www.accton.com)
51 * Conexant LANfinity (www.conexant.com)
53 * Datasheets for the 21143 are available at developer.intel.com.
54 * Datasheets for the clone parts can be found at their respective sites.
55 * (Except for the PNIC; see www.freebsd.org/~wpaul/PNIC/pnic.ps.gz.)
56 * The PNIC II is essentially a Macronix 98715A chip; the only difference
57 * worth noting is that its multicast hash table is only 128 bits wide
60 * Written by Bill Paul <wpaul@ee.columbia.edu>
61 * Electrical Engineering Department
62 * Columbia University, New York City
66 * The Intel 21143 is the successor to the DEC 21140. It is basically
67 * the same as the 21140 but with a few new features. The 21143 supports
68 * three kinds of media attachments:
70 * o MII port, for 10Mbps and 100Mbps support and NWAY
71 * autonegotiation provided by an external PHY.
72 * o SYM port, for symbol mode 100Mbps support.
76 * The 100Mbps SYM port and 10baseT port can be used together in
77 * combination with the internal NWAY support to create a 10/100
78 * autosensing configuration.
80 * Note that not all tulip workalikes are handled in this driver: we only
81 * deal with those which are relatively well behaved. The Winbond is
82 * handled separately due to its different register offsets and the
83 * special handling needed for its various bugs. The PNIC is handled
84 * here, but I'm not thrilled about it.
86 * All of the workalike chips use some form of MII transceiver support
87 * with the exception of the Macronix chips, which also have a SYM port.
88 * The ASIX AX88140A is also documented to have a SYM port, but all
89 * the cards I've seen use an MII transceiver, probably because the
90 * AX88140A doesn't support internal NWAY.
93 #include <sys/param.h>
94 #include <sys/systm.h>
95 #include <sys/sockio.h>
97 #include <sys/malloc.h>
98 #include <sys/kernel.h>
99 #include <sys/socket.h>
100 #include <sys/sysctl.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/clock.h> /* for DELAY */
115 #include <machine/bus_pio.h>
116 #include <machine/bus_memio.h>
117 #include <machine/bus.h>
118 #include <machine/resource.h>
120 #include <sys/rman.h>
122 #include "../mii_layer/mii.h"
123 #include "../mii_layer/miivar.h"
125 #include <bus/pci/pcireg.h>
126 #include <bus/pci/pcivar.h>
128 #define DC_USEIOSPACE
133 #include "if_dcreg.h"
135 /* "controller miibus0" required. See GENERIC if you get errors here. */
136 #include "miibus_if.h"
139 * Various supported device vendors/types and their names.
141 static struct dc_type dc_devs[] = {
142 { DC_VENDORID_DEC, DC_DEVICEID_21143,
143 "Intel 21143 10/100BaseTX" },
144 { DC_VENDORID_DAVICOM, DC_DEVICEID_DM9009,
145 "Davicom DM9009 10/100BaseTX" },
146 { DC_VENDORID_DAVICOM, DC_DEVICEID_DM9100,
147 "Davicom DM9100 10/100BaseTX" },
148 { DC_VENDORID_DAVICOM, DC_DEVICEID_DM9102,
149 "Davicom DM9102 10/100BaseTX" },
150 { DC_VENDORID_DAVICOM, DC_DEVICEID_DM9102,
151 "Davicom DM9102A 10/100BaseTX" },
152 { DC_VENDORID_ADMTEK, DC_DEVICEID_AL981,
153 "ADMtek AL981 10/100BaseTX" },
154 { DC_VENDORID_ADMTEK, DC_DEVICEID_AN985,
155 "ADMtek AN985 10/100BaseTX" },
156 { DC_VENDORID_ASIX, DC_DEVICEID_AX88140A,
157 "ASIX AX88140A 10/100BaseTX" },
158 { DC_VENDORID_ASIX, DC_DEVICEID_AX88140A,
159 "ASIX AX88141 10/100BaseTX" },
160 { DC_VENDORID_MX, DC_DEVICEID_98713,
161 "Macronix 98713 10/100BaseTX" },
162 { DC_VENDORID_MX, DC_DEVICEID_98713,
163 "Macronix 98713A 10/100BaseTX" },
164 { DC_VENDORID_CP, DC_DEVICEID_98713_CP,
165 "Compex RL100-TX 10/100BaseTX" },
166 { DC_VENDORID_CP, DC_DEVICEID_98713_CP,
167 "Compex RL100-TX 10/100BaseTX" },
168 { DC_VENDORID_MX, DC_DEVICEID_987x5,
169 "Macronix 98715/98715A 10/100BaseTX" },
170 { DC_VENDORID_MX, DC_DEVICEID_987x5,
171 "Macronix 98715AEC-C 10/100BaseTX" },
172 { DC_VENDORID_MX, DC_DEVICEID_987x5,
173 "Macronix 98725 10/100BaseTX" },
174 { DC_VENDORID_MX, DC_DEVICEID_98727,
175 "Macronix 98727/98732 10/100BaseTX" },
176 { DC_VENDORID_LO, DC_DEVICEID_82C115,
177 "LC82C115 PNIC II 10/100BaseTX" },
178 { DC_VENDORID_LO, DC_DEVICEID_82C168,
179 "82c168 PNIC 10/100BaseTX" },
180 { DC_VENDORID_LO, DC_DEVICEID_82C168,
181 "82c169 PNIC 10/100BaseTX" },
182 { DC_VENDORID_ACCTON, DC_DEVICEID_EN1217,
183 "Accton EN1217 10/100BaseTX" },
184 { DC_VENDORID_ACCTON, DC_DEVICEID_EN2242,
185 "Accton EN2242 MiniPCI 10/100BaseTX" },
186 { DC_VENDORID_CONEXANT, DC_DEVICEID_RS7112,
187 "Conexant LANfinity MiniPCI 10/100BaseTX" },
188 { DC_VENDORID_3COM, DC_DEVICEID_3CSOHOB,
189 "3Com OfficeConnect 10/100B" },
193 static int dc_probe (device_t);
194 static int dc_attach (device_t);
195 static int dc_detach (device_t);
196 static int dc_suspend (device_t);
197 static int dc_resume (device_t);
198 static void dc_acpi (device_t);
199 static struct dc_type *dc_devtype (device_t);
200 static int dc_newbuf (struct dc_softc *, int, struct mbuf *);
201 static int dc_encap (struct dc_softc *, struct mbuf *,
203 static void dc_pnic_rx_bug_war (struct dc_softc *, int);
204 static int dc_rx_resync (struct dc_softc *);
205 static void dc_rxeof (struct dc_softc *);
206 static void dc_txeof (struct dc_softc *);
207 static void dc_tick (void *);
208 static void dc_tx_underrun (struct dc_softc *);
209 static void dc_intr (void *);
210 static void dc_start (struct ifnet *);
211 static int dc_ioctl (struct ifnet *, u_long, caddr_t,
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 void dc_setcfg (struct dc_softc *, int);
242 static u_int32_t dc_crc_le (struct dc_softc *, c_caddr_t);
243 static u_int32_t dc_crc_be (caddr_t);
244 static void dc_setfilt_21143 (struct dc_softc *);
245 static void dc_setfilt_asix (struct dc_softc *);
246 static void dc_setfilt_admtek (struct dc_softc *);
248 static void dc_setfilt (struct dc_softc *);
250 static void dc_reset (struct dc_softc *);
251 static int dc_list_rx_init (struct dc_softc *);
252 static int dc_list_tx_init (struct dc_softc *);
254 static void dc_read_srom (struct dc_softc *, int);
255 static void dc_parse_21143_srom (struct dc_softc *);
256 static void dc_decode_leaf_sia (struct dc_softc *,
257 struct dc_eblock_sia *);
258 static void dc_decode_leaf_mii (struct dc_softc *,
259 struct dc_eblock_mii *);
260 static void dc_decode_leaf_sym (struct dc_softc *,
261 struct dc_eblock_sym *);
262 static void dc_apply_fixup (struct dc_softc *, int);
265 #define DC_RES SYS_RES_IOPORT
266 #define DC_RID DC_PCI_CFBIO
268 #define DC_RES SYS_RES_MEMORY
269 #define DC_RID DC_PCI_CFBMA
272 static device_method_t dc_methods[] = {
273 /* Device interface */
274 DEVMETHOD(device_probe, dc_probe),
275 DEVMETHOD(device_attach, dc_attach),
276 DEVMETHOD(device_detach, dc_detach),
277 DEVMETHOD(device_suspend, dc_suspend),
278 DEVMETHOD(device_resume, dc_resume),
279 DEVMETHOD(device_shutdown, dc_shutdown),
282 DEVMETHOD(bus_print_child, bus_generic_print_child),
283 DEVMETHOD(bus_driver_added, bus_generic_driver_added),
286 DEVMETHOD(miibus_readreg, dc_miibus_readreg),
287 DEVMETHOD(miibus_writereg, dc_miibus_writereg),
288 DEVMETHOD(miibus_statchg, dc_miibus_statchg),
289 DEVMETHOD(miibus_mediainit, dc_miibus_mediainit),
294 static driver_t dc_driver = {
297 sizeof(struct dc_softc)
300 static devclass_t dc_devclass;
303 static int dc_quick=1;
304 SYSCTL_INT(_hw, OID_AUTO, dc_quick, CTLFLAG_RW,
305 &dc_quick,0,"do not mdevget in dc driver");
308 DECLARE_DUMMY_MODULE(if_dc);
309 DRIVER_MODULE(if_dc, pci, dc_driver, dc_devclass, 0, 0);
310 DRIVER_MODULE(miibus, dc, miibus_driver, miibus_devclass, 0, 0);
312 #define DC_SETBIT(sc, reg, x) \
313 CSR_WRITE_4(sc, reg, CSR_READ_4(sc, reg) | (x))
315 #define DC_CLRBIT(sc, reg, x) \
316 CSR_WRITE_4(sc, reg, CSR_READ_4(sc, reg) & ~(x))
318 #define SIO_SET(x) DC_SETBIT(sc, DC_SIO, (x))
319 #define SIO_CLR(x) DC_CLRBIT(sc, DC_SIO, (x))
321 static void dc_delay(sc)
326 for (idx = (300 / 33) + 1; idx > 0; idx--)
327 CSR_READ_4(sc, DC_BUSCTL);
330 static void dc_eeprom_width(sc)
335 /* Force EEPROM to idle state. */
338 /* Enter EEPROM access mode. */
339 CSR_WRITE_4(sc, DC_SIO, DC_SIO_EESEL);
341 DC_SETBIT(sc, DC_SIO, DC_SIO_ROMCTL_READ);
343 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK);
345 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CS);
350 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_DATAIN);
352 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_DATAIN);
354 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CLK);
356 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK);
360 for (i = 1; i <= 12; i++) {
361 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CLK);
363 if (!(CSR_READ_4(sc, DC_SIO) & DC_SIO_EE_DATAOUT)) {
364 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK);
368 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK);
372 /* Turn off EEPROM access mode. */
380 /* Enter EEPROM access mode. */
381 CSR_WRITE_4(sc, DC_SIO, DC_SIO_EESEL);
383 DC_SETBIT(sc, DC_SIO, DC_SIO_ROMCTL_READ);
385 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK);
387 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CS);
390 /* Turn off EEPROM access mode. */
394 static void dc_eeprom_idle(sc)
399 CSR_WRITE_4(sc, DC_SIO, DC_SIO_EESEL);
401 DC_SETBIT(sc, DC_SIO, DC_SIO_ROMCTL_READ);
403 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK);
405 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CS);
408 for (i = 0; i < 25; i++) {
409 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK);
411 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CLK);
415 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK);
417 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CS);
419 CSR_WRITE_4(sc, DC_SIO, 0x00000000);
425 * Send a read command and address to the EEPROM, check for ACK.
427 static void dc_eeprom_putbyte(sc, addr)
433 d = DC_EECMD_READ >> 6;
436 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_DATAIN);
438 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_DATAIN);
440 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CLK);
442 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK);
447 * Feed in each bit and strobe the clock.
449 for (i = sc->dc_romwidth; i--;) {
450 if (addr & (1 << i)) {
451 SIO_SET(DC_SIO_EE_DATAIN);
453 SIO_CLR(DC_SIO_EE_DATAIN);
456 SIO_SET(DC_SIO_EE_CLK);
458 SIO_CLR(DC_SIO_EE_CLK);
466 * Read a word of data stored in the EEPROM at address 'addr.'
467 * The PNIC 82c168/82c169 has its own non-standard way to read
470 static void dc_eeprom_getword_pnic(sc, addr, dest)
478 CSR_WRITE_4(sc, DC_PN_SIOCTL, DC_PN_EEOPCODE_READ|addr);
480 for (i = 0; i < DC_TIMEOUT; i++) {
482 r = CSR_READ_4(sc, DC_SIO);
483 if (!(r & DC_PN_SIOCTL_BUSY)) {
484 *dest = (u_int16_t)(r & 0xFFFF);
493 * Read a word of data stored in the EEPROM at address 'addr.'
495 static void dc_eeprom_getword(sc, addr, dest)
503 /* Force EEPROM to idle state. */
506 /* Enter EEPROM access mode. */
507 CSR_WRITE_4(sc, DC_SIO, DC_SIO_EESEL);
509 DC_SETBIT(sc, DC_SIO, DC_SIO_ROMCTL_READ);
511 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK);
513 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CS);
517 * Send address of word we want to read.
519 dc_eeprom_putbyte(sc, addr);
522 * Start reading bits from EEPROM.
524 for (i = 0x8000; i; i >>= 1) {
525 SIO_SET(DC_SIO_EE_CLK);
527 if (CSR_READ_4(sc, DC_SIO) & DC_SIO_EE_DATAOUT)
530 SIO_CLR(DC_SIO_EE_CLK);
534 /* Turn off EEPROM access mode. */
543 * Read a sequence of words from the EEPROM.
545 static void dc_read_eeprom(sc, dest, off, cnt, swap)
553 u_int16_t word = 0, *ptr;
555 for (i = 0; i < cnt; i++) {
557 dc_eeprom_getword_pnic(sc, off + i, &word);
559 dc_eeprom_getword(sc, off + i, &word);
560 ptr = (u_int16_t *)(dest + (i * 2));
571 * The following two routines are taken from the Macronix 98713
572 * Application Notes pp.19-21.
575 * Write a bit to the MII bus.
577 static void dc_mii_writebit(sc, bit)
582 CSR_WRITE_4(sc, DC_SIO,
583 DC_SIO_ROMCTL_WRITE|DC_SIO_MII_DATAOUT);
585 CSR_WRITE_4(sc, DC_SIO, DC_SIO_ROMCTL_WRITE);
587 DC_SETBIT(sc, DC_SIO, DC_SIO_MII_CLK);
588 DC_CLRBIT(sc, DC_SIO, DC_SIO_MII_CLK);
594 * Read a bit from the MII bus.
596 static int dc_mii_readbit(sc)
599 CSR_WRITE_4(sc, DC_SIO, DC_SIO_ROMCTL_READ|DC_SIO_MII_DIR);
600 CSR_READ_4(sc, DC_SIO);
601 DC_SETBIT(sc, DC_SIO, DC_SIO_MII_CLK);
602 DC_CLRBIT(sc, DC_SIO, DC_SIO_MII_CLK);
603 if (CSR_READ_4(sc, DC_SIO) & DC_SIO_MII_DATAIN)
610 * Sync the PHYs by setting data bit and strobing the clock 32 times.
612 static void dc_mii_sync(sc)
617 CSR_WRITE_4(sc, DC_SIO, DC_SIO_ROMCTL_WRITE);
619 for (i = 0; i < 32; i++)
620 dc_mii_writebit(sc, 1);
626 * Clock a series of bits through the MII.
628 static void dc_mii_send(sc, bits, cnt)
635 for (i = (0x1 << (cnt - 1)); i; i >>= 1)
636 dc_mii_writebit(sc, bits & i);
640 * Read an PHY register through the MII.
642 static int dc_mii_readreg(sc, frame)
644 struct dc_mii_frame *frame;
652 * Set up frame for RX.
654 frame->mii_stdelim = DC_MII_STARTDELIM;
655 frame->mii_opcode = DC_MII_READOP;
656 frame->mii_turnaround = 0;
665 * Send command/address info.
667 dc_mii_send(sc, frame->mii_stdelim, 2);
668 dc_mii_send(sc, frame->mii_opcode, 2);
669 dc_mii_send(sc, frame->mii_phyaddr, 5);
670 dc_mii_send(sc, frame->mii_regaddr, 5);
674 dc_mii_writebit(sc, 1);
675 dc_mii_writebit(sc, 0);
679 ack = dc_mii_readbit(sc);
682 * Now try reading data bits. If the ack failed, we still
683 * need to clock through 16 cycles to keep the PHY(s) in sync.
686 for(i = 0; i < 16; i++) {
692 for (i = 0x8000; i; i >>= 1) {
694 if (dc_mii_readbit(sc))
695 frame->mii_data |= i;
701 dc_mii_writebit(sc, 0);
702 dc_mii_writebit(sc, 0);
712 * Write to a PHY register through the MII.
714 static int dc_mii_writereg(sc, frame)
716 struct dc_mii_frame *frame;
723 * Set up frame for TX.
726 frame->mii_stdelim = DC_MII_STARTDELIM;
727 frame->mii_opcode = DC_MII_WRITEOP;
728 frame->mii_turnaround = DC_MII_TURNAROUND;
735 dc_mii_send(sc, frame->mii_stdelim, 2);
736 dc_mii_send(sc, frame->mii_opcode, 2);
737 dc_mii_send(sc, frame->mii_phyaddr, 5);
738 dc_mii_send(sc, frame->mii_regaddr, 5);
739 dc_mii_send(sc, frame->mii_turnaround, 2);
740 dc_mii_send(sc, frame->mii_data, 16);
743 dc_mii_writebit(sc, 0);
744 dc_mii_writebit(sc, 0);
751 static int dc_miibus_readreg(dev, phy, reg)
755 struct dc_mii_frame frame;
757 int i, rval, phy_reg = 0;
759 sc = device_get_softc(dev);
760 bzero((char *)&frame, sizeof(frame));
763 * Note: both the AL981 and AN985 have internal PHYs,
764 * however the AL981 provides direct access to the PHY
765 * registers while the AN985 uses a serial MII interface.
766 * The AN985's MII interface is also buggy in that you
767 * can read from any MII address (0 to 31), but only address 1
768 * behaves normally. To deal with both cases, we pretend
769 * that the PHY is at MII address 1.
771 if (DC_IS_ADMTEK(sc) && phy != DC_ADMTEK_PHYADDR)
775 * Note: the ukphy probes of the RS7112 report a PHY at
776 * MII address 0 (possibly HomePNA?) and 1 (ethernet)
777 * so we only respond to correct one.
779 if (DC_IS_CONEXANT(sc) && phy != DC_CONEXANT_PHYADDR)
782 if (sc->dc_pmode != DC_PMODE_MII) {
783 if (phy == (MII_NPHY - 1)) {
787 * Fake something to make the probe
788 * code think there's a PHY here.
790 return(BMSR_MEDIAMASK);
794 return(DC_VENDORID_LO);
795 return(DC_VENDORID_DEC);
799 return(DC_DEVICEID_82C168);
800 return(DC_DEVICEID_21143);
810 if (DC_IS_PNIC(sc)) {
811 CSR_WRITE_4(sc, DC_PN_MII, DC_PN_MIIOPCODE_READ |
812 (phy << 23) | (reg << 18));
813 for (i = 0; i < DC_TIMEOUT; i++) {
815 rval = CSR_READ_4(sc, DC_PN_MII);
816 if (!(rval & DC_PN_MII_BUSY)) {
818 return(rval == 0xFFFF ? 0 : rval);
824 if (DC_IS_COMET(sc)) {
827 phy_reg = DC_AL_BMCR;
830 phy_reg = DC_AL_BMSR;
833 phy_reg = DC_AL_VENID;
836 phy_reg = DC_AL_DEVID;
839 phy_reg = DC_AL_ANAR;
842 phy_reg = DC_AL_LPAR;
845 phy_reg = DC_AL_ANER;
848 printf("dc%d: phy_read: bad phy register %x\n",
854 rval = CSR_READ_4(sc, phy_reg) & 0x0000FFFF;
861 frame.mii_phyaddr = phy;
862 frame.mii_regaddr = reg;
863 if (sc->dc_type == DC_TYPE_98713) {
864 phy_reg = CSR_READ_4(sc, DC_NETCFG);
865 CSR_WRITE_4(sc, DC_NETCFG, phy_reg & ~DC_NETCFG_PORTSEL);
867 dc_mii_readreg(sc, &frame);
868 if (sc->dc_type == DC_TYPE_98713)
869 CSR_WRITE_4(sc, DC_NETCFG, phy_reg);
871 return(frame.mii_data);
874 static int dc_miibus_writereg(dev, phy, reg, data)
879 struct dc_mii_frame frame;
882 sc = device_get_softc(dev);
883 bzero((char *)&frame, sizeof(frame));
885 if (DC_IS_ADMTEK(sc) && phy != DC_ADMTEK_PHYADDR)
888 if (DC_IS_CONEXANT(sc) && phy != DC_CONEXANT_PHYADDR)
891 if (DC_IS_PNIC(sc)) {
892 CSR_WRITE_4(sc, DC_PN_MII, DC_PN_MIIOPCODE_WRITE |
893 (phy << 23) | (reg << 10) | data);
894 for (i = 0; i < DC_TIMEOUT; i++) {
895 if (!(CSR_READ_4(sc, DC_PN_MII) & DC_PN_MII_BUSY))
901 if (DC_IS_COMET(sc)) {
904 phy_reg = DC_AL_BMCR;
907 phy_reg = DC_AL_BMSR;
910 phy_reg = DC_AL_VENID;
913 phy_reg = DC_AL_DEVID;
916 phy_reg = DC_AL_ANAR;
919 phy_reg = DC_AL_LPAR;
922 phy_reg = DC_AL_ANER;
925 printf("dc%d: phy_write: bad phy register %x\n",
931 CSR_WRITE_4(sc, phy_reg, data);
935 frame.mii_phyaddr = phy;
936 frame.mii_regaddr = reg;
937 frame.mii_data = data;
939 if (sc->dc_type == DC_TYPE_98713) {
940 phy_reg = CSR_READ_4(sc, DC_NETCFG);
941 CSR_WRITE_4(sc, DC_NETCFG, phy_reg & ~DC_NETCFG_PORTSEL);
943 dc_mii_writereg(sc, &frame);
944 if (sc->dc_type == DC_TYPE_98713)
945 CSR_WRITE_4(sc, DC_NETCFG, phy_reg);
950 static void dc_miibus_statchg(dev)
954 struct mii_data *mii;
957 sc = device_get_softc(dev);
958 if (DC_IS_ADMTEK(sc))
961 mii = device_get_softc(sc->dc_miibus);
962 ifm = &mii->mii_media;
963 if (DC_IS_DAVICOM(sc) &&
964 IFM_SUBTYPE(ifm->ifm_media) == IFM_HPNA_1) {
965 dc_setcfg(sc, ifm->ifm_media);
966 sc->dc_if_media = ifm->ifm_media;
968 dc_setcfg(sc, mii->mii_media_active);
969 sc->dc_if_media = mii->mii_media_active;
976 * Special support for DM9102A cards with HomePNA PHYs. Note:
977 * with the Davicom DM9102A/DM9801 eval board that I have, it seems
978 * to be impossible to talk to the management interface of the DM9801
979 * PHY (its MDIO pin is not connected to anything). Consequently,
980 * the driver has to just 'know' about the additional mode and deal
981 * with it itself. *sigh*
983 static void dc_miibus_mediainit(dev)
987 struct mii_data *mii;
991 rev = pci_read_config(dev, DC_PCI_CFRV, 4) & 0xFF;
993 sc = device_get_softc(dev);
994 mii = device_get_softc(sc->dc_miibus);
995 ifm = &mii->mii_media;
997 if (DC_IS_DAVICOM(sc) && rev >= DC_REVISION_DM9102A)
998 ifmedia_add(ifm, IFM_ETHER | IFM_HPNA_1, 0, NULL);
1003 #define DC_POLY 0xEDB88320
1004 #define DC_BITS_512 9
1005 #define DC_BITS_128 7
1006 #define DC_BITS_64 6
1008 static u_int32_t dc_crc_le(sc, addr)
1009 struct dc_softc *sc;
1012 u_int32_t idx, bit, data, crc;
1014 /* Compute CRC for the address value. */
1015 crc = 0xFFFFFFFF; /* initial value */
1017 for (idx = 0; idx < 6; idx++) {
1018 for (data = *addr++, bit = 0; bit < 8; bit++, data >>= 1)
1019 crc = (crc >> 1) ^ (((crc ^ data) & 1) ? DC_POLY : 0);
1023 * The hash table on the PNIC II and the MX98715AEC-C/D/E
1024 * chips is only 128 bits wide.
1026 if (sc->dc_flags & DC_128BIT_HASH)
1027 return (crc & ((1 << DC_BITS_128) - 1));
1029 /* The hash table on the MX98715BEC is only 64 bits wide. */
1030 if (sc->dc_flags & DC_64BIT_HASH)
1031 return (crc & ((1 << DC_BITS_64) - 1));
1033 return (crc & ((1 << DC_BITS_512) - 1));
1037 * Calculate CRC of a multicast group address, return the lower 6 bits.
1039 static u_int32_t dc_crc_be(addr)
1042 u_int32_t crc, carry;
1046 /* Compute CRC for the address value. */
1047 crc = 0xFFFFFFFF; /* initial value */
1049 for (i = 0; i < 6; i++) {
1051 for (j = 0; j < 8; j++) {
1052 carry = ((crc & 0x80000000) ? 1 : 0) ^ (c & 0x01);
1056 crc = (crc ^ 0x04c11db6) | carry;
1060 /* return the filter bit position */
1061 return((crc >> 26) & 0x0000003F);
1065 * 21143-style RX filter setup routine. Filter programming is done by
1066 * downloading a special setup frame into the TX engine. 21143, Macronix,
1067 * PNIC, PNIC II and Davicom chips are programmed this way.
1069 * We always program the chip using 'hash perfect' mode, i.e. one perfect
1070 * address (our node address) and a 512-bit hash filter for multicast
1071 * frames. We also sneak the broadcast address into the hash filter since
1074 void dc_setfilt_21143(sc)
1075 struct dc_softc *sc;
1077 struct dc_desc *sframe;
1079 struct ifmultiaddr *ifma;
1083 ifp = &sc->arpcom.ac_if;
1085 i = sc->dc_cdata.dc_tx_prod;
1086 DC_INC(sc->dc_cdata.dc_tx_prod, DC_TX_LIST_CNT);
1087 sc->dc_cdata.dc_tx_cnt++;
1088 sframe = &sc->dc_ldata->dc_tx_list[i];
1089 sp = (u_int32_t *)&sc->dc_cdata.dc_sbuf;
1090 bzero((char *)sp, DC_SFRAME_LEN);
1092 sframe->dc_data = vtophys(&sc->dc_cdata.dc_sbuf);
1093 sframe->dc_ctl = DC_SFRAME_LEN | DC_TXCTL_SETUP | DC_TXCTL_TLINK |
1094 DC_FILTER_HASHPERF | DC_TXCTL_FINT;
1096 sc->dc_cdata.dc_tx_chain[i] = (struct mbuf *)&sc->dc_cdata.dc_sbuf;
1098 /* If we want promiscuous mode, set the allframes bit. */
1099 if (ifp->if_flags & IFF_PROMISC)
1100 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC);
1102 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC);
1104 if (ifp->if_flags & IFF_ALLMULTI)
1105 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI);
1107 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI);
1109 for (ifma = ifp->if_multiaddrs.lh_first; ifma != NULL;
1110 ifma = ifma->ifma_link.le_next) {
1111 if (ifma->ifma_addr->sa_family != AF_LINK)
1114 LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
1115 sp[h >> 4] |= 1 << (h & 0xF);
1118 if (ifp->if_flags & IFF_BROADCAST) {
1119 h = dc_crc_le(sc, ifp->if_broadcastaddr);
1120 sp[h >> 4] |= 1 << (h & 0xF);
1123 /* Set our MAC address */
1124 sp[39] = ((u_int16_t *)sc->arpcom.ac_enaddr)[0];
1125 sp[40] = ((u_int16_t *)sc->arpcom.ac_enaddr)[1];
1126 sp[41] = ((u_int16_t *)sc->arpcom.ac_enaddr)[2];
1128 sframe->dc_status = DC_TXSTAT_OWN;
1129 CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF);
1132 * The PNIC takes an exceedingly long time to process its
1133 * setup frame; wait 10ms after posting the setup frame
1134 * before proceeding, just so it has time to swallow its
1144 void dc_setfilt_admtek(sc)
1145 struct dc_softc *sc;
1149 u_int32_t hashes[2] = { 0, 0 };
1150 struct ifmultiaddr *ifma;
1152 ifp = &sc->arpcom.ac_if;
1154 /* Init our MAC address */
1155 CSR_WRITE_4(sc, DC_AL_PAR0, *(u_int32_t *)(&sc->arpcom.ac_enaddr[0]));
1156 CSR_WRITE_4(sc, DC_AL_PAR1, *(u_int32_t *)(&sc->arpcom.ac_enaddr[4]));
1158 /* If we want promiscuous mode, set the allframes bit. */
1159 if (ifp->if_flags & IFF_PROMISC)
1160 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC);
1162 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC);
1164 if (ifp->if_flags & IFF_ALLMULTI)
1165 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI);
1167 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI);
1169 /* first, zot all the existing hash bits */
1170 CSR_WRITE_4(sc, DC_AL_MAR0, 0);
1171 CSR_WRITE_4(sc, DC_AL_MAR1, 0);
1174 * If we're already in promisc or allmulti mode, we
1175 * don't have to bother programming the multicast filter.
1177 if (ifp->if_flags & (IFF_PROMISC|IFF_ALLMULTI))
1180 /* now program new ones */
1181 for (ifma = ifp->if_multiaddrs.lh_first; ifma != NULL;
1182 ifma = ifma->ifma_link.le_next) {
1183 if (ifma->ifma_addr->sa_family != AF_LINK)
1185 if (DC_IS_CENTAUR(sc))
1186 h = dc_crc_le(sc, LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
1188 h = dc_crc_be(LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
1190 hashes[0] |= (1 << h);
1192 hashes[1] |= (1 << (h - 32));
1195 CSR_WRITE_4(sc, DC_AL_MAR0, hashes[0]);
1196 CSR_WRITE_4(sc, DC_AL_MAR1, hashes[1]);
1201 void dc_setfilt_asix(sc)
1202 struct dc_softc *sc;
1206 u_int32_t hashes[2] = { 0, 0 };
1207 struct ifmultiaddr *ifma;
1209 ifp = &sc->arpcom.ac_if;
1211 /* Init our MAC address */
1212 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_PAR0);
1213 CSR_WRITE_4(sc, DC_AX_FILTDATA,
1214 *(u_int32_t *)(&sc->arpcom.ac_enaddr[0]));
1215 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_PAR1);
1216 CSR_WRITE_4(sc, DC_AX_FILTDATA,
1217 *(u_int32_t *)(&sc->arpcom.ac_enaddr[4]));
1219 /* If we want promiscuous mode, set the allframes bit. */
1220 if (ifp->if_flags & IFF_PROMISC)
1221 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC);
1223 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC);
1225 if (ifp->if_flags & IFF_ALLMULTI)
1226 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI);
1228 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI);
1231 * The ASIX chip has a special bit to enable reception
1232 * of broadcast frames.
1234 if (ifp->if_flags & IFF_BROADCAST)
1235 DC_SETBIT(sc, DC_NETCFG, DC_AX_NETCFG_RX_BROAD);
1237 DC_CLRBIT(sc, DC_NETCFG, DC_AX_NETCFG_RX_BROAD);
1239 /* first, zot all the existing hash bits */
1240 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_MAR0);
1241 CSR_WRITE_4(sc, DC_AX_FILTDATA, 0);
1242 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_MAR1);
1243 CSR_WRITE_4(sc, DC_AX_FILTDATA, 0);
1246 * If we're already in promisc or allmulti mode, we
1247 * don't have to bother programming the multicast filter.
1249 if (ifp->if_flags & (IFF_PROMISC|IFF_ALLMULTI))
1252 /* now program new ones */
1253 for (ifma = ifp->if_multiaddrs.lh_first; ifma != NULL;
1254 ifma = ifma->ifma_link.le_next) {
1255 if (ifma->ifma_addr->sa_family != AF_LINK)
1257 h = dc_crc_be(LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
1259 hashes[0] |= (1 << h);
1261 hashes[1] |= (1 << (h - 32));
1264 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_MAR0);
1265 CSR_WRITE_4(sc, DC_AX_FILTDATA, hashes[0]);
1266 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_MAR1);
1267 CSR_WRITE_4(sc, DC_AX_FILTDATA, hashes[1]);
1272 static void dc_setfilt(sc)
1273 struct dc_softc *sc;
1275 if (DC_IS_INTEL(sc) || DC_IS_MACRONIX(sc) || DC_IS_PNIC(sc) ||
1276 DC_IS_PNICII(sc) || DC_IS_DAVICOM(sc) || DC_IS_CONEXANT(sc))
1277 dc_setfilt_21143(sc);
1280 dc_setfilt_asix(sc);
1282 if (DC_IS_ADMTEK(sc))
1283 dc_setfilt_admtek(sc);
1289 * In order to fiddle with the
1290 * 'full-duplex' and '100Mbps' bits in the netconfig register, we
1291 * first have to put the transmit and/or receive logic in the idle state.
1293 static void dc_setcfg(sc, media)
1294 struct dc_softc *sc;
1300 if (IFM_SUBTYPE(media) == IFM_NONE)
1303 if (CSR_READ_4(sc, DC_NETCFG) & (DC_NETCFG_TX_ON|DC_NETCFG_RX_ON)) {
1305 DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_TX_ON|DC_NETCFG_RX_ON));
1307 for (i = 0; i < DC_TIMEOUT; i++) {
1308 isr = CSR_READ_4(sc, DC_ISR);
1309 if (isr & DC_ISR_TX_IDLE ||
1310 (isr & DC_ISR_RX_STATE) == DC_RXSTATE_STOPPED)
1315 if (i == DC_TIMEOUT)
1316 printf("dc%d: failed to force tx and "
1317 "rx to idle state\n", sc->dc_unit);
1320 if (IFM_SUBTYPE(media) == IFM_100_TX) {
1321 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_SPEEDSEL);
1322 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_HEARTBEAT);
1323 if (sc->dc_pmode == DC_PMODE_MII) {
1326 if (DC_IS_INTEL(sc)) {
1327 /* there's a write enable bit here that reads as 1 */
1328 watchdogreg = CSR_READ_4(sc, DC_WATCHDOG);
1329 watchdogreg &= ~DC_WDOG_CTLWREN;
1330 watchdogreg |= DC_WDOG_JABBERDIS;
1331 CSR_WRITE_4(sc, DC_WATCHDOG, watchdogreg);
1333 DC_SETBIT(sc, DC_WATCHDOG, DC_WDOG_JABBERDIS);
1335 DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_PCS|
1336 DC_NETCFG_PORTSEL|DC_NETCFG_SCRAMBLER));
1337 if (sc->dc_type == DC_TYPE_98713)
1338 DC_SETBIT(sc, DC_NETCFG, (DC_NETCFG_PCS|
1339 DC_NETCFG_SCRAMBLER));
1340 if (!DC_IS_DAVICOM(sc))
1341 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL);
1342 DC_CLRBIT(sc, DC_10BTCTRL, 0xFFFF);
1343 if (DC_IS_INTEL(sc))
1344 dc_apply_fixup(sc, IFM_AUTO);
1346 if (DC_IS_PNIC(sc)) {
1347 DC_PN_GPIO_SETBIT(sc, DC_PN_GPIO_SPEEDSEL);
1348 DC_PN_GPIO_SETBIT(sc, DC_PN_GPIO_100TX_LOOP);
1349 DC_SETBIT(sc, DC_PN_NWAY, DC_PN_NWAY_SPEEDSEL);
1351 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL);
1352 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PCS);
1353 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_SCRAMBLER);
1354 if (DC_IS_INTEL(sc))
1356 (media & IFM_GMASK) == IFM_FDX ?
1357 IFM_100_TX|IFM_FDX : IFM_100_TX);
1361 if (IFM_SUBTYPE(media) == IFM_10_T) {
1362 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_SPEEDSEL);
1363 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_HEARTBEAT);
1364 if (sc->dc_pmode == DC_PMODE_MII) {
1367 /* there's a write enable bit here that reads as 1 */
1368 if (DC_IS_INTEL(sc)) {
1369 watchdogreg = CSR_READ_4(sc, DC_WATCHDOG);
1370 watchdogreg &= ~DC_WDOG_CTLWREN;
1371 watchdogreg |= DC_WDOG_JABBERDIS;
1372 CSR_WRITE_4(sc, DC_WATCHDOG, watchdogreg);
1374 DC_SETBIT(sc, DC_WATCHDOG, DC_WDOG_JABBERDIS);
1376 DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_PCS|
1377 DC_NETCFG_PORTSEL|DC_NETCFG_SCRAMBLER));
1378 if (sc->dc_type == DC_TYPE_98713)
1379 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PCS);
1380 if (!DC_IS_DAVICOM(sc))
1381 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL);
1382 DC_CLRBIT(sc, DC_10BTCTRL, 0xFFFF);
1383 if (DC_IS_INTEL(sc))
1384 dc_apply_fixup(sc, IFM_AUTO);
1386 if (DC_IS_PNIC(sc)) {
1387 DC_PN_GPIO_CLRBIT(sc, DC_PN_GPIO_SPEEDSEL);
1388 DC_PN_GPIO_SETBIT(sc, DC_PN_GPIO_100TX_LOOP);
1389 DC_CLRBIT(sc, DC_PN_NWAY, DC_PN_NWAY_SPEEDSEL);
1391 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL);
1392 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_PCS);
1393 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_SCRAMBLER);
1394 if (DC_IS_INTEL(sc)) {
1395 DC_CLRBIT(sc, DC_SIARESET, DC_SIA_RESET);
1396 DC_CLRBIT(sc, DC_10BTCTRL, 0xFFFF);
1397 if ((media & IFM_GMASK) == IFM_FDX)
1398 DC_SETBIT(sc, DC_10BTCTRL, 0x7F3D);
1400 DC_SETBIT(sc, DC_10BTCTRL, 0x7F3F);
1401 DC_SETBIT(sc, DC_SIARESET, DC_SIA_RESET);
1402 DC_CLRBIT(sc, DC_10BTCTRL,
1403 DC_TCTL_AUTONEGENBL);
1405 (media & IFM_GMASK) == IFM_FDX ?
1406 IFM_10_T|IFM_FDX : IFM_10_T);
1413 * If this is a Davicom DM9102A card with a DM9801 HomePNA
1414 * PHY and we want HomePNA mode, set the portsel bit to turn
1415 * on the external MII port.
1417 if (DC_IS_DAVICOM(sc)) {
1418 if (IFM_SUBTYPE(media) == IFM_HPNA_1) {
1419 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL);
1422 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL);
1426 if ((media & IFM_GMASK) == IFM_FDX) {
1427 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_FULLDUPLEX);
1428 if (sc->dc_pmode == DC_PMODE_SYM && DC_IS_PNIC(sc))
1429 DC_SETBIT(sc, DC_PN_NWAY, DC_PN_NWAY_DUPLEX);
1431 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_FULLDUPLEX);
1432 if (sc->dc_pmode == DC_PMODE_SYM && DC_IS_PNIC(sc))
1433 DC_CLRBIT(sc, DC_PN_NWAY, DC_PN_NWAY_DUPLEX);
1437 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON|DC_NETCFG_RX_ON);
1442 static void dc_reset(sc)
1443 struct dc_softc *sc;
1447 DC_SETBIT(sc, DC_BUSCTL, DC_BUSCTL_RESET);
1449 for (i = 0; i < DC_TIMEOUT; i++) {
1451 if (!(CSR_READ_4(sc, DC_BUSCTL) & DC_BUSCTL_RESET))
1455 if (DC_IS_ASIX(sc) || DC_IS_ADMTEK(sc) || DC_IS_CONEXANT(sc)) {
1457 DC_CLRBIT(sc, DC_BUSCTL, DC_BUSCTL_RESET);
1461 if (i == DC_TIMEOUT)
1462 printf("dc%d: reset never completed!\n", sc->dc_unit);
1464 /* Wait a little while for the chip to get its brains in order. */
1467 CSR_WRITE_4(sc, DC_IMR, 0x00000000);
1468 CSR_WRITE_4(sc, DC_BUSCTL, 0x00000000);
1469 CSR_WRITE_4(sc, DC_NETCFG, 0x00000000);
1472 * Bring the SIA out of reset. In some cases, it looks
1473 * like failing to unreset the SIA soon enough gets it
1474 * into a state where it will never come out of reset
1475 * until we reset the whole chip again.
1477 if (DC_IS_INTEL(sc)) {
1478 DC_SETBIT(sc, DC_SIARESET, DC_SIA_RESET);
1479 CSR_WRITE_4(sc, DC_10BTCTRL, 0);
1480 CSR_WRITE_4(sc, DC_WATCHDOG, 0);
1486 static struct dc_type *dc_devtype(dev)
1494 while(t->dc_name != NULL) {
1495 if ((pci_get_vendor(dev) == t->dc_vid) &&
1496 (pci_get_device(dev) == t->dc_did)) {
1497 /* Check the PCI revision */
1498 rev = pci_read_config(dev, DC_PCI_CFRV, 4) & 0xFF;
1499 if (t->dc_did == DC_DEVICEID_98713 &&
1500 rev >= DC_REVISION_98713A)
1502 if (t->dc_did == DC_DEVICEID_98713_CP &&
1503 rev >= DC_REVISION_98713A)
1505 if (t->dc_did == DC_DEVICEID_987x5 &&
1506 rev >= DC_REVISION_98715AEC_C)
1508 if (t->dc_did == DC_DEVICEID_987x5 &&
1509 rev >= DC_REVISION_98725)
1511 if (t->dc_did == DC_DEVICEID_AX88140A &&
1512 rev >= DC_REVISION_88141)
1514 if (t->dc_did == DC_DEVICEID_82C168 &&
1515 rev >= DC_REVISION_82C169)
1517 if (t->dc_did == DC_DEVICEID_DM9102 &&
1518 rev >= DC_REVISION_DM9102A)
1529 * Probe for a 21143 or clone chip. Check the PCI vendor and device
1530 * IDs against our list and return a device name if we find a match.
1531 * We do a little bit of extra work to identify the exact type of
1532 * chip. The MX98713 and MX98713A have the same PCI vendor/device ID,
1533 * but different revision IDs. The same is true for 98715/98715A
1534 * chips and the 98725, as well as the ASIX and ADMtek chips. In some
1535 * cases, the exact chip revision affects driver behavior.
1537 static int dc_probe(dev)
1542 t = dc_devtype(dev);
1545 device_set_desc(dev, t->dc_name);
1552 static void dc_acpi(dev)
1558 unit = device_get_unit(dev);
1560 /* Find the location of the capabilities block */
1561 cptr = pci_read_config(dev, DC_PCI_CCAP, 4) & 0xFF;
1563 r = pci_read_config(dev, cptr, 4) & 0xFF;
1566 r = pci_read_config(dev, cptr + 4, 4);
1567 if (r & DC_PSTATE_D3) {
1568 u_int32_t iobase, membase, irq;
1570 /* Save important PCI config data. */
1571 iobase = pci_read_config(dev, DC_PCI_CFBIO, 4);
1572 membase = pci_read_config(dev, DC_PCI_CFBMA, 4);
1573 irq = pci_read_config(dev, DC_PCI_CFIT, 4);
1575 /* Reset the power state. */
1576 printf("dc%d: chip is in D%d power mode "
1577 "-- setting to D0\n", unit, r & DC_PSTATE_D3);
1579 pci_write_config(dev, cptr + 4, r, 4);
1581 /* Restore PCI config data. */
1582 pci_write_config(dev, DC_PCI_CFBIO, iobase, 4);
1583 pci_write_config(dev, DC_PCI_CFBMA, membase, 4);
1584 pci_write_config(dev, DC_PCI_CFIT, irq, 4);
1590 static void dc_apply_fixup(sc, media)
1591 struct dc_softc *sc;
1594 struct dc_mediainfo *m;
1602 if (m->dc_media == media)
1610 for (i = 0, p = m->dc_reset_ptr; i < m->dc_reset_len; i++, p += 2) {
1611 reg = (p[0] | (p[1] << 8)) << 16;
1612 CSR_WRITE_4(sc, DC_WATCHDOG, reg);
1615 for (i = 0, p = m->dc_gp_ptr; i < m->dc_gp_len; i++, p += 2) {
1616 reg = (p[0] | (p[1] << 8)) << 16;
1617 CSR_WRITE_4(sc, DC_WATCHDOG, reg);
1623 static void dc_decode_leaf_sia(sc, l)
1624 struct dc_softc *sc;
1625 struct dc_eblock_sia *l;
1627 struct dc_mediainfo *m;
1629 m = malloc(sizeof(struct dc_mediainfo), M_DEVBUF, M_INTWAIT | M_ZERO);
1630 if (l->dc_sia_code == DC_SIA_CODE_10BT)
1631 m->dc_media = IFM_10_T;
1633 if (l->dc_sia_code == DC_SIA_CODE_10BT_FDX)
1634 m->dc_media = IFM_10_T|IFM_FDX;
1636 if (l->dc_sia_code == DC_SIA_CODE_10B2)
1637 m->dc_media = IFM_10_2;
1639 if (l->dc_sia_code == DC_SIA_CODE_10B5)
1640 m->dc_media = IFM_10_5;
1643 m->dc_gp_ptr = (u_int8_t *)&l->dc_sia_gpio_ctl;
1645 m->dc_next = sc->dc_mi;
1648 sc->dc_pmode = DC_PMODE_SIA;
1653 static void dc_decode_leaf_sym(sc, l)
1654 struct dc_softc *sc;
1655 struct dc_eblock_sym *l;
1657 struct dc_mediainfo *m;
1659 m = malloc(sizeof(struct dc_mediainfo), M_DEVBUF, M_INTWAIT | M_ZERO);
1660 if (l->dc_sym_code == DC_SYM_CODE_100BT)
1661 m->dc_media = IFM_100_TX;
1663 if (l->dc_sym_code == DC_SYM_CODE_100BT_FDX)
1664 m->dc_media = IFM_100_TX|IFM_FDX;
1667 m->dc_gp_ptr = (u_int8_t *)&l->dc_sym_gpio_ctl;
1669 m->dc_next = sc->dc_mi;
1672 sc->dc_pmode = DC_PMODE_SYM;
1677 static void dc_decode_leaf_mii(sc, l)
1678 struct dc_softc *sc;
1679 struct dc_eblock_mii *l;
1682 struct dc_mediainfo *m;
1684 m = malloc(sizeof(struct dc_mediainfo), M_DEVBUF, M_INTWAIT | M_ZERO);
1685 /* We abuse IFM_AUTO to represent MII. */
1686 m->dc_media = IFM_AUTO;
1687 m->dc_gp_len = l->dc_gpr_len;
1690 p += sizeof(struct dc_eblock_mii);
1692 p += 2 * l->dc_gpr_len;
1693 m->dc_reset_len = *p;
1695 m->dc_reset_ptr = p;
1697 m->dc_next = sc->dc_mi;
1703 static void dc_read_srom(sc, bits)
1704 struct dc_softc *sc;
1710 sc->dc_srom = malloc(size, M_DEVBUF, M_INTWAIT);
1711 dc_read_eeprom(sc, (caddr_t)sc->dc_srom, 0, (size / 2), 0);
1714 static void dc_parse_21143_srom(sc)
1715 struct dc_softc *sc;
1717 struct dc_leaf_hdr *lhdr;
1718 struct dc_eblock_hdr *hdr;
1724 loff = sc->dc_srom[27];
1725 lhdr = (struct dc_leaf_hdr *)&(sc->dc_srom[loff]);
1728 ptr += sizeof(struct dc_leaf_hdr) - 1;
1730 * Look if we got a MII media block.
1732 for (i = 0; i < lhdr->dc_mcnt; i++) {
1733 hdr = (struct dc_eblock_hdr *)ptr;
1734 if (hdr->dc_type == DC_EBLOCK_MII)
1737 ptr += (hdr->dc_len & 0x7F);
1742 * Do the same thing again. Only use SIA and SYM media
1743 * blocks if no MII media block is available.
1746 ptr += sizeof(struct dc_leaf_hdr) - 1;
1747 for (i = 0; i < lhdr->dc_mcnt; i++) {
1748 hdr = (struct dc_eblock_hdr *)ptr;
1749 switch(hdr->dc_type) {
1751 dc_decode_leaf_mii(sc, (struct dc_eblock_mii *)hdr);
1755 dc_decode_leaf_sia(sc,
1756 (struct dc_eblock_sia *)hdr);
1760 dc_decode_leaf_sym(sc,
1761 (struct dc_eblock_sym *)hdr);
1764 /* Don't care. Yet. */
1767 ptr += (hdr->dc_len & 0x7F);
1775 * Attach the interface. Allocate softc structures, do ifmedia
1776 * setup and ethernet/BPF attach.
1778 static int dc_attach(dev)
1782 u_char eaddr[ETHER_ADDR_LEN];
1784 struct dc_softc *sc;
1787 int unit, error = 0, rid, mac_offset;
1791 sc = device_get_softc(dev);
1792 unit = device_get_unit(dev);
1793 bzero(sc, sizeof(struct dc_softc));
1794 callout_init(&sc->dc_stat_timer);
1797 * Handle power management nonsense.
1802 * Map control/status registers.
1804 command = pci_read_config(dev, PCIR_COMMAND, 4);
1805 command |= (PCIM_CMD_PORTEN|PCIM_CMD_MEMEN|PCIM_CMD_BUSMASTEREN);
1806 pci_write_config(dev, PCIR_COMMAND, command, 4);
1807 command = pci_read_config(dev, PCIR_COMMAND, 4);
1809 #ifdef DC_USEIOSPACE
1810 if (!(command & PCIM_CMD_PORTEN)) {
1811 printf("dc%d: failed to enable I/O ports!\n", unit);
1816 if (!(command & PCIM_CMD_MEMEN)) {
1817 printf("dc%d: failed to enable memory mapping!\n", unit);
1824 sc->dc_res = bus_alloc_resource(dev, DC_RES, &rid,
1825 0, ~0, 1, RF_ACTIVE);
1827 if (sc->dc_res == NULL) {
1828 printf("dc%d: couldn't map ports/memory\n", unit);
1833 sc->dc_btag = rman_get_bustag(sc->dc_res);
1834 sc->dc_bhandle = rman_get_bushandle(sc->dc_res);
1836 /* Allocate interrupt */
1838 sc->dc_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1,
1839 RF_SHAREABLE | RF_ACTIVE);
1841 if (sc->dc_irq == NULL) {
1842 printf("dc%d: couldn't map interrupt\n", unit);
1843 bus_release_resource(dev, DC_RES, DC_RID, sc->dc_res);
1848 error = bus_setup_intr(dev, sc->dc_irq, INTR_TYPE_NET,
1849 dc_intr, sc, &sc->dc_intrhand);
1852 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->dc_irq);
1853 bus_release_resource(dev, DC_RES, DC_RID, sc->dc_res);
1854 printf("dc%d: couldn't set up irq\n", unit);
1858 /* Need this info to decide on a chip type. */
1859 sc->dc_info = dc_devtype(dev);
1860 revision = pci_read_config(dev, DC_PCI_CFRV, 4) & 0x000000FF;
1862 /* Get the eeprom width, but PNIC has diff eeprom */
1863 if (sc->dc_info->dc_did != DC_DEVICEID_82C168)
1864 dc_eeprom_width(sc);
1866 switch(sc->dc_info->dc_did) {
1867 case DC_DEVICEID_21143:
1868 sc->dc_type = DC_TYPE_21143;
1869 sc->dc_flags |= DC_TX_POLL|DC_TX_USE_TX_INTR;
1870 sc->dc_flags |= DC_REDUCED_MII_POLL;
1871 /* Save EEPROM contents so we can parse them later. */
1872 dc_read_srom(sc, sc->dc_romwidth);
1874 case DC_DEVICEID_DM9009:
1875 case DC_DEVICEID_DM9100:
1876 case DC_DEVICEID_DM9102:
1877 sc->dc_type = DC_TYPE_DM9102;
1878 sc->dc_flags |= DC_TX_COALESCE|DC_TX_INTR_ALWAYS;
1879 sc->dc_flags |= DC_REDUCED_MII_POLL|DC_TX_STORENFWD;
1880 sc->dc_pmode = DC_PMODE_MII;
1881 /* Increase the latency timer value. */
1882 command = pci_read_config(dev, DC_PCI_CFLT, 4);
1883 command &= 0xFFFF00FF;
1884 command |= 0x00008000;
1885 pci_write_config(dev, DC_PCI_CFLT, command, 4);
1887 case DC_DEVICEID_AL981:
1888 sc->dc_type = DC_TYPE_AL981;
1889 sc->dc_flags |= DC_TX_USE_TX_INTR;
1890 sc->dc_flags |= DC_TX_ADMTEK_WAR;
1891 sc->dc_pmode = DC_PMODE_MII;
1892 dc_read_srom(sc, sc->dc_romwidth);
1894 case DC_DEVICEID_AN985:
1895 case DC_DEVICEID_EN2242:
1896 case DC_DEVICEID_3CSOHOB:
1897 sc->dc_type = DC_TYPE_AN985;
1898 sc->dc_flags |= DC_64BIT_HASH;
1899 sc->dc_flags |= DC_TX_USE_TX_INTR;
1900 sc->dc_flags |= DC_TX_ADMTEK_WAR;
1901 sc->dc_pmode = DC_PMODE_MII;
1902 dc_read_srom(sc, sc->dc_romwidth);
1904 case DC_DEVICEID_98713:
1905 case DC_DEVICEID_98713_CP:
1906 if (revision < DC_REVISION_98713A) {
1907 sc->dc_type = DC_TYPE_98713;
1909 if (revision >= DC_REVISION_98713A) {
1910 sc->dc_type = DC_TYPE_98713A;
1911 sc->dc_flags |= DC_21143_NWAY;
1913 sc->dc_flags |= DC_REDUCED_MII_POLL;
1914 sc->dc_flags |= DC_TX_POLL|DC_TX_USE_TX_INTR;
1916 case DC_DEVICEID_987x5:
1917 case DC_DEVICEID_EN1217:
1919 * Macronix MX98715AEC-C/D/E parts have only a
1920 * 128-bit hash table. We need to deal with these
1921 * in the same manner as the PNIC II so that we
1922 * get the right number of bits out of the
1925 if (revision >= DC_REVISION_98715AEC_C &&
1926 revision < DC_REVISION_98725)
1927 sc->dc_flags |= DC_128BIT_HASH;
1928 sc->dc_type = DC_TYPE_987x5;
1929 sc->dc_flags |= DC_TX_POLL|DC_TX_USE_TX_INTR;
1930 sc->dc_flags |= DC_REDUCED_MII_POLL|DC_21143_NWAY;
1932 case DC_DEVICEID_98727:
1933 sc->dc_type = DC_TYPE_987x5;
1934 sc->dc_flags |= DC_TX_POLL|DC_TX_USE_TX_INTR;
1935 sc->dc_flags |= DC_REDUCED_MII_POLL|DC_21143_NWAY;
1937 case DC_DEVICEID_82C115:
1938 sc->dc_type = DC_TYPE_PNICII;
1939 sc->dc_flags |= DC_TX_POLL|DC_TX_USE_TX_INTR|DC_128BIT_HASH;
1940 sc->dc_flags |= DC_REDUCED_MII_POLL|DC_21143_NWAY;
1942 case DC_DEVICEID_82C168:
1943 sc->dc_type = DC_TYPE_PNIC;
1944 sc->dc_flags |= DC_TX_STORENFWD|DC_TX_INTR_ALWAYS;
1945 sc->dc_flags |= DC_PNIC_RX_BUG_WAR;
1946 sc->dc_pnic_rx_buf = malloc(DC_RXLEN * 5, M_DEVBUF, M_WAITOK);
1947 if (revision < DC_REVISION_82C169)
1948 sc->dc_pmode = DC_PMODE_SYM;
1950 case DC_DEVICEID_AX88140A:
1951 sc->dc_type = DC_TYPE_ASIX;
1952 sc->dc_flags |= DC_TX_USE_TX_INTR|DC_TX_INTR_FIRSTFRAG;
1953 sc->dc_flags |= DC_REDUCED_MII_POLL;
1954 sc->dc_pmode = DC_PMODE_MII;
1956 case DC_DEVICEID_RS7112:
1957 sc->dc_type = DC_TYPE_CONEXANT;
1958 sc->dc_flags |= DC_TX_INTR_ALWAYS;
1959 sc->dc_flags |= DC_REDUCED_MII_POLL;
1960 sc->dc_pmode = DC_PMODE_MII;
1961 dc_read_srom(sc, sc->dc_romwidth);
1964 printf("dc%d: unknown device: %x\n", sc->dc_unit,
1965 sc->dc_info->dc_did);
1969 /* Save the cache line size. */
1970 if (DC_IS_DAVICOM(sc))
1971 sc->dc_cachesize = 0;
1973 sc->dc_cachesize = pci_read_config(dev,
1974 DC_PCI_CFLT, 4) & 0xFF;
1976 /* Reset the adapter. */
1979 /* Take 21143 out of snooze mode */
1980 if (DC_IS_INTEL(sc)) {
1981 command = pci_read_config(dev, DC_PCI_CFDD, 4);
1982 command &= ~(DC_CFDD_SNOOZE_MODE|DC_CFDD_SLEEP_MODE);
1983 pci_write_config(dev, DC_PCI_CFDD, command, 4);
1987 * Try to learn something about the supported media.
1988 * We know that ASIX and ADMtek and Davicom devices
1989 * will *always* be using MII media, so that's a no-brainer.
1990 * The tricky ones are the Macronix/PNIC II and the
1993 if (DC_IS_INTEL(sc))
1994 dc_parse_21143_srom(sc);
1995 else if (DC_IS_MACRONIX(sc) || DC_IS_PNICII(sc)) {
1996 if (sc->dc_type == DC_TYPE_98713)
1997 sc->dc_pmode = DC_PMODE_MII;
1999 sc->dc_pmode = DC_PMODE_SYM;
2000 } else if (!sc->dc_pmode)
2001 sc->dc_pmode = DC_PMODE_MII;
2004 * Get station address from the EEPROM.
2006 switch(sc->dc_type) {
2008 case DC_TYPE_98713A:
2010 case DC_TYPE_PNICII:
2011 dc_read_eeprom(sc, (caddr_t)&mac_offset,
2012 (DC_EE_NODEADDR_OFFSET / 2), 1, 0);
2013 dc_read_eeprom(sc, (caddr_t)&eaddr, (mac_offset / 2), 3, 0);
2016 dc_read_eeprom(sc, (caddr_t)&eaddr, 0, 3, 1);
2018 case DC_TYPE_DM9102:
2021 dc_read_eeprom(sc, (caddr_t)&eaddr, DC_EE_NODEADDR, 3, 0);
2025 bcopy(&sc->dc_srom[DC_AL_EE_NODEADDR], (caddr_t)&eaddr,
2027 dc_read_eeprom(sc, (caddr_t)&eaddr, DC_AL_EE_NODEADDR, 3, 0);
2029 case DC_TYPE_CONEXANT:
2030 bcopy(sc->dc_srom + DC_CONEXANT_EE_NODEADDR, &eaddr, 6);
2033 dc_read_eeprom(sc, (caddr_t)&eaddr, DC_EE_NODEADDR, 3, 0);
2039 sc->dc_ldata = contigmalloc(sizeof(struct dc_list_data), M_DEVBUF,
2040 M_NOWAIT, 0, 0xffffffff, PAGE_SIZE, 0);
2042 if (sc->dc_ldata == NULL) {
2043 printf("dc%d: no memory for list buffers!\n", unit);
2044 if (sc->dc_pnic_rx_buf != NULL)
2045 free(sc->dc_pnic_rx_buf, M_DEVBUF);
2046 bus_teardown_intr(dev, sc->dc_irq, sc->dc_intrhand);
2047 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->dc_irq);
2048 bus_release_resource(dev, DC_RES, DC_RID, sc->dc_res);
2053 bzero(sc->dc_ldata, sizeof(struct dc_list_data));
2055 ifp = &sc->arpcom.ac_if;
2057 if_initname(ifp, "dc", unit);
2058 ifp->if_mtu = ETHERMTU;
2059 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
2060 ifp->if_ioctl = dc_ioctl;
2061 ifp->if_start = dc_start;
2062 ifp->if_watchdog = dc_watchdog;
2063 ifp->if_init = dc_init;
2064 ifp->if_baudrate = 10000000;
2065 ifp->if_snd.ifq_maxlen = DC_TX_LIST_CNT - 1;
2068 * Do MII setup. If this is a 21143, check for a PHY on the
2069 * MII bus after applying any necessary fixups to twiddle the
2070 * GPIO bits. If we don't end up finding a PHY, restore the
2071 * old selection (SIA only or SIA/SYM) and attach the dcphy
2074 if (DC_IS_INTEL(sc)) {
2075 dc_apply_fixup(sc, IFM_AUTO);
2077 sc->dc_pmode = DC_PMODE_MII;
2080 error = mii_phy_probe(dev, &sc->dc_miibus,
2081 dc_ifmedia_upd, dc_ifmedia_sts);
2083 if (error && DC_IS_INTEL(sc)) {
2085 if (sc->dc_pmode != DC_PMODE_SIA)
2086 sc->dc_pmode = DC_PMODE_SYM;
2087 sc->dc_flags |= DC_21143_NWAY;
2088 mii_phy_probe(dev, &sc->dc_miibus,
2089 dc_ifmedia_upd, dc_ifmedia_sts);
2091 * For non-MII cards, we need to have the 21143
2092 * drive the LEDs. Except there are some systems
2093 * like the NEC VersaPro NoteBook PC which have no
2094 * LEDs, and twiddling these bits has adverse effects
2095 * on them. (I.e. you suddenly can't get a link.)
2097 if (pci_read_config(dev, DC_PCI_CSID, 4) != 0x80281033)
2098 sc->dc_flags |= DC_TULIP_LEDS;
2103 printf("dc%d: MII without any PHY!\n", sc->dc_unit);
2104 contigfree(sc->dc_ldata, sizeof(struct dc_list_data),
2106 if (sc->dc_pnic_rx_buf != NULL)
2107 free(sc->dc_pnic_rx_buf, M_DEVBUF);
2108 bus_teardown_intr(dev, sc->dc_irq, sc->dc_intrhand);
2109 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->dc_irq);
2110 bus_release_resource(dev, DC_RES, DC_RID, sc->dc_res);
2116 * Call MI attach routine.
2118 ether_ifattach(ifp, eaddr);
2120 if (DC_IS_ADMTEK(sc)) {
2122 * Set automatic TX underrun recovery for the ADMtek chips
2124 DC_SETBIT(sc, DC_AL_CR, DC_AL_CR_ATUR);
2128 * Tell the upper layer(s) we support long frames.
2130 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
2133 sc->dc_srm_media = 0;
2135 /* Remember the SRM console media setting */
2136 if (DC_IS_INTEL(sc)) {
2137 command = pci_read_config(dev, DC_PCI_CFDD, 4);
2138 command &= ~(DC_CFDD_SNOOZE_MODE|DC_CFDD_SLEEP_MODE);
2139 switch ((command >> 8) & 0xff) {
2141 sc->dc_srm_media = IFM_10_T;
2144 sc->dc_srm_media = IFM_10_T | IFM_FDX;
2147 sc->dc_srm_media = IFM_100_TX;
2150 sc->dc_srm_media = IFM_100_TX | IFM_FDX;
2153 if (sc->dc_srm_media)
2154 sc->dc_srm_media |= IFM_ACTIVE | IFM_ETHER;
2165 static int dc_detach(dev)
2168 struct dc_softc *sc;
2171 struct dc_mediainfo *m;
2175 sc = device_get_softc(dev);
2176 ifp = &sc->arpcom.ac_if;
2179 ether_ifdetach(ifp);
2181 bus_generic_detach(dev);
2182 device_delete_child(dev, sc->dc_miibus);
2184 bus_teardown_intr(dev, sc->dc_irq, sc->dc_intrhand);
2185 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->dc_irq);
2186 bus_release_resource(dev, DC_RES, DC_RID, sc->dc_res);
2188 contigfree(sc->dc_ldata, sizeof(struct dc_list_data), M_DEVBUF);
2189 if (sc->dc_pnic_rx_buf != NULL)
2190 free(sc->dc_pnic_rx_buf, M_DEVBUF);
2192 while(sc->dc_mi != NULL) {
2193 m = sc->dc_mi->dc_next;
2194 free(sc->dc_mi, M_DEVBUF);
2197 free(sc->dc_srom, M_DEVBUF);
2205 * Initialize the transmit descriptors.
2207 static int dc_list_tx_init(sc)
2208 struct dc_softc *sc;
2210 struct dc_chain_data *cd;
2211 struct dc_list_data *ld;
2216 for (i = 0; i < DC_TX_LIST_CNT; i++) {
2217 if (i == (DC_TX_LIST_CNT - 1)) {
2218 ld->dc_tx_list[i].dc_next =
2219 vtophys(&ld->dc_tx_list[0]);
2221 ld->dc_tx_list[i].dc_next =
2222 vtophys(&ld->dc_tx_list[i + 1]);
2224 cd->dc_tx_chain[i] = NULL;
2225 ld->dc_tx_list[i].dc_data = 0;
2226 ld->dc_tx_list[i].dc_ctl = 0;
2229 cd->dc_tx_prod = cd->dc_tx_cons = cd->dc_tx_cnt = 0;
2236 * Initialize the RX descriptors and allocate mbufs for them. Note that
2237 * we arrange the descriptors in a closed ring, so that the last descriptor
2238 * points back to the first.
2240 static int dc_list_rx_init(sc)
2241 struct dc_softc *sc;
2243 struct dc_chain_data *cd;
2244 struct dc_list_data *ld;
2250 for (i = 0; i < DC_RX_LIST_CNT; i++) {
2251 if (dc_newbuf(sc, i, NULL) == ENOBUFS)
2253 if (i == (DC_RX_LIST_CNT - 1)) {
2254 ld->dc_rx_list[i].dc_next =
2255 vtophys(&ld->dc_rx_list[0]);
2257 ld->dc_rx_list[i].dc_next =
2258 vtophys(&ld->dc_rx_list[i + 1]);
2268 * Initialize an RX descriptor and attach an MBUF cluster.
2270 static int dc_newbuf(sc, i, m)
2271 struct dc_softc *sc;
2275 struct mbuf *m_new = NULL;
2278 c = &sc->dc_ldata->dc_rx_list[i];
2281 MGETHDR(m_new, MB_DONTWAIT, MT_DATA);
2285 MCLGET(m_new, MB_DONTWAIT);
2286 if (!(m_new->m_flags & M_EXT)) {
2290 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
2293 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
2294 m_new->m_data = m_new->m_ext.ext_buf;
2297 m_adj(m_new, sizeof(u_int64_t));
2300 * If this is a PNIC chip, zero the buffer. This is part
2301 * of the workaround for the receive bug in the 82c168 and
2304 if (sc->dc_flags & DC_PNIC_RX_BUG_WAR)
2305 bzero((char *)mtod(m_new, char *), m_new->m_len);
2307 sc->dc_cdata.dc_rx_chain[i] = m_new;
2308 c->dc_data = vtophys(mtod(m_new, caddr_t));
2309 c->dc_ctl = DC_RXCTL_RLINK | DC_RXLEN;
2310 c->dc_status = DC_RXSTAT_OWN;
2317 * The PNIC chip has a terrible bug in it that manifests itself during
2318 * periods of heavy activity. The exact mode of failure if difficult to
2319 * pinpoint: sometimes it only happens in promiscuous mode, sometimes it
2320 * will happen on slow machines. The bug is that sometimes instead of
2321 * uploading one complete frame during reception, it uploads what looks
2322 * like the entire contents of its FIFO memory. The frame we want is at
2323 * the end of the whole mess, but we never know exactly how much data has
2324 * been uploaded, so salvaging the frame is hard.
2326 * There is only one way to do it reliably, and it's disgusting.
2327 * Here's what we know:
2329 * - We know there will always be somewhere between one and three extra
2330 * descriptors uploaded.
2332 * - We know the desired received frame will always be at the end of the
2333 * total data upload.
2335 * - We know the size of the desired received frame because it will be
2336 * provided in the length field of the status word in the last descriptor.
2338 * Here's what we do:
2340 * - When we allocate buffers for the receive ring, we bzero() them.
2341 * This means that we know that the buffer contents should be all
2342 * zeros, except for data uploaded by the chip.
2344 * - We also force the PNIC chip to upload frames that include the
2345 * ethernet CRC at the end.
2347 * - We gather all of the bogus frame data into a single buffer.
2349 * - We then position a pointer at the end of this buffer and scan
2350 * backwards until we encounter the first non-zero byte of data.
2351 * This is the end of the received frame. We know we will encounter
2352 * some data at the end of the frame because the CRC will always be
2353 * there, so even if the sender transmits a packet of all zeros,
2354 * we won't be fooled.
2356 * - We know the size of the actual received frame, so we subtract
2357 * that value from the current pointer location. This brings us
2358 * to the start of the actual received packet.
2360 * - We copy this into an mbuf and pass it on, along with the actual
2363 * The performance hit is tremendous, but it beats dropping frames all
2367 #define DC_WHOLEFRAME (DC_RXSTAT_FIRSTFRAG|DC_RXSTAT_LASTFRAG)
2368 static void dc_pnic_rx_bug_war(sc, idx)
2369 struct dc_softc *sc;
2372 struct dc_desc *cur_rx;
2373 struct dc_desc *c = NULL;
2374 struct mbuf *m = NULL;
2377 u_int32_t rxstat = 0;
2379 i = sc->dc_pnic_rx_bug_save;
2380 cur_rx = &sc->dc_ldata->dc_rx_list[idx];
2381 ptr = sc->dc_pnic_rx_buf;
2382 bzero(ptr, DC_RXLEN * 5);
2384 /* Copy all the bytes from the bogus buffers. */
2386 c = &sc->dc_ldata->dc_rx_list[i];
2387 rxstat = c->dc_status;
2388 m = sc->dc_cdata.dc_rx_chain[i];
2389 bcopy(mtod(m, char *), ptr, DC_RXLEN);
2391 /* If this is the last buffer, break out. */
2392 if (i == idx || rxstat & DC_RXSTAT_LASTFRAG)
2394 dc_newbuf(sc, i, m);
2395 DC_INC(i, DC_RX_LIST_CNT);
2398 /* Find the length of the actual receive frame. */
2399 total_len = DC_RXBYTES(rxstat);
2401 /* Scan backwards until we hit a non-zero byte. */
2406 if ((uintptr_t)(ptr) & 0x3)
2409 /* Now find the start of the frame. */
2411 if (ptr < sc->dc_pnic_rx_buf)
2412 ptr = sc->dc_pnic_rx_buf;
2415 * Now copy the salvaged frame to the last mbuf and fake up
2416 * the status word to make it look like a successful
2419 dc_newbuf(sc, i, m);
2420 bcopy(ptr, mtod(m, char *), total_len);
2421 cur_rx->dc_status = rxstat | DC_RXSTAT_FIRSTFRAG;
2427 * This routine searches the RX ring for dirty descriptors in the
2428 * event that the rxeof routine falls out of sync with the chip's
2429 * current descriptor pointer. This may happen sometimes as a result
2430 * of a "no RX buffer available" condition that happens when the chip
2431 * consumes all of the RX buffers before the driver has a chance to
2432 * process the RX ring. This routine may need to be called more than
2433 * once to bring the driver back in sync with the chip, however we
2434 * should still be getting RX DONE interrupts to drive the search
2435 * for new packets in the RX ring, so we should catch up eventually.
2437 static int dc_rx_resync(sc)
2438 struct dc_softc *sc;
2441 struct dc_desc *cur_rx;
2443 pos = sc->dc_cdata.dc_rx_prod;
2445 for (i = 0; i < DC_RX_LIST_CNT; i++) {
2446 cur_rx = &sc->dc_ldata->dc_rx_list[pos];
2447 if (!(cur_rx->dc_status & DC_RXSTAT_OWN))
2449 DC_INC(pos, DC_RX_LIST_CNT);
2452 /* If the ring really is empty, then just return. */
2453 if (i == DC_RX_LIST_CNT)
2456 /* We've fallen behing the chip: catch it. */
2457 sc->dc_cdata.dc_rx_prod = pos;
2463 * A frame has been uploaded: pass the resulting mbuf chain up to
2464 * the higher level protocols.
2466 static void dc_rxeof(sc)
2467 struct dc_softc *sc;
2471 struct dc_desc *cur_rx;
2472 int i, total_len = 0;
2475 ifp = &sc->arpcom.ac_if;
2476 i = sc->dc_cdata.dc_rx_prod;
2478 while(!(sc->dc_ldata->dc_rx_list[i].dc_status & DC_RXSTAT_OWN)) {
2480 #ifdef DEVICE_POLLING
2481 if (ifp->if_flags & IFF_POLLING) {
2482 if (sc->rxcycles <= 0)
2486 #endif /* DEVICE_POLLING */
2487 cur_rx = &sc->dc_ldata->dc_rx_list[i];
2488 rxstat = cur_rx->dc_status;
2489 m = sc->dc_cdata.dc_rx_chain[i];
2490 total_len = DC_RXBYTES(rxstat);
2492 if (sc->dc_flags & DC_PNIC_RX_BUG_WAR) {
2493 if ((rxstat & DC_WHOLEFRAME) != DC_WHOLEFRAME) {
2494 if (rxstat & DC_RXSTAT_FIRSTFRAG)
2495 sc->dc_pnic_rx_bug_save = i;
2496 if ((rxstat & DC_RXSTAT_LASTFRAG) == 0) {
2497 DC_INC(i, DC_RX_LIST_CNT);
2500 dc_pnic_rx_bug_war(sc, i);
2501 rxstat = cur_rx->dc_status;
2502 total_len = DC_RXBYTES(rxstat);
2506 sc->dc_cdata.dc_rx_chain[i] = NULL;
2509 * If an error occurs, update stats, clear the
2510 * status word and leave the mbuf cluster in place:
2511 * it should simply get re-used next time this descriptor
2512 * comes up in the ring. However, don't report long
2513 * frames as errors since they could be vlans
2515 if ((rxstat & DC_RXSTAT_RXERR)){
2516 if (!(rxstat & DC_RXSTAT_GIANT) ||
2517 (rxstat & (DC_RXSTAT_CRCERR | DC_RXSTAT_DRIBBLE |
2518 DC_RXSTAT_MIIERE | DC_RXSTAT_COLLSEEN |
2519 DC_RXSTAT_RUNT | DC_RXSTAT_DE))) {
2521 if (rxstat & DC_RXSTAT_COLLSEEN)
2522 ifp->if_collisions++;
2523 dc_newbuf(sc, i, m);
2524 if (rxstat & DC_RXSTAT_CRCERR) {
2525 DC_INC(i, DC_RX_LIST_CNT);
2534 /* No errors; receive the packet. */
2535 total_len -= ETHER_CRC_LEN;
2539 * On the x86 we do not have alignment problems, so try to
2540 * allocate a new buffer for the receive ring, and pass up
2541 * the one where the packet is already, saving the expensive
2542 * copy done in m_devget().
2543 * If we are on an architecture with alignment problems, or
2544 * if the allocation fails, then use m_devget and leave the
2545 * existing buffer in the receive ring.
2547 if (dc_quick && dc_newbuf(sc, i, NULL) == 0) {
2548 m->m_pkthdr.rcvif = ifp;
2549 m->m_pkthdr.len = m->m_len = total_len;
2550 DC_INC(i, DC_RX_LIST_CNT);
2556 m0 = m_devget(mtod(m, char *) - ETHER_ALIGN,
2557 total_len + ETHER_ALIGN, 0, ifp, NULL);
2558 dc_newbuf(sc, i, m);
2559 DC_INC(i, DC_RX_LIST_CNT);
2564 m_adj(m0, ETHER_ALIGN);
2569 (*ifp->if_input)(ifp, m);
2572 sc->dc_cdata.dc_rx_prod = i;
2576 * A frame was downloaded to the chip. It's safe for us to clean up
2582 struct dc_softc *sc;
2584 struct dc_desc *cur_tx = NULL;
2588 ifp = &sc->arpcom.ac_if;
2591 * Go through our tx list and free mbufs for those
2592 * frames that have been transmitted.
2594 idx = sc->dc_cdata.dc_tx_cons;
2595 while(idx != sc->dc_cdata.dc_tx_prod) {
2598 cur_tx = &sc->dc_ldata->dc_tx_list[idx];
2599 txstat = cur_tx->dc_status;
2601 if (txstat & DC_TXSTAT_OWN)
2604 if (!(cur_tx->dc_ctl & DC_TXCTL_LASTFRAG) ||
2605 cur_tx->dc_ctl & DC_TXCTL_SETUP) {
2606 if (cur_tx->dc_ctl & DC_TXCTL_SETUP) {
2608 * Yes, the PNIC is so brain damaged
2609 * that it will sometimes generate a TX
2610 * underrun error while DMAing the RX
2611 * filter setup frame. If we detect this,
2612 * we have to send the setup frame again,
2613 * or else the filter won't be programmed
2616 if (DC_IS_PNIC(sc)) {
2617 if (txstat & DC_TXSTAT_ERRSUM)
2620 sc->dc_cdata.dc_tx_chain[idx] = NULL;
2622 sc->dc_cdata.dc_tx_cnt--;
2623 DC_INC(idx, DC_TX_LIST_CNT);
2627 if (DC_IS_CONEXANT(sc)) {
2629 * For some reason Conexant chips like
2630 * setting the CARRLOST flag even when
2631 * the carrier is there. In CURRENT we
2632 * have the same problem for Xircom
2635 if (/*sc->dc_type == DC_TYPE_21143 &&*/
2636 sc->dc_pmode == DC_PMODE_MII &&
2637 ((txstat & 0xFFFF) & ~(DC_TXSTAT_ERRSUM|
2638 DC_TXSTAT_NOCARRIER)))
2639 txstat &= ~DC_TXSTAT_ERRSUM;
2641 if (/*sc->dc_type == DC_TYPE_21143 &&*/
2642 sc->dc_pmode == DC_PMODE_MII &&
2643 ((txstat & 0xFFFF) & ~(DC_TXSTAT_ERRSUM|
2644 DC_TXSTAT_NOCARRIER|DC_TXSTAT_CARRLOST)))
2645 txstat &= ~DC_TXSTAT_ERRSUM;
2648 if (txstat & DC_TXSTAT_ERRSUM) {
2650 if (txstat & DC_TXSTAT_EXCESSCOLL)
2651 ifp->if_collisions++;
2652 if (txstat & DC_TXSTAT_LATECOLL)
2653 ifp->if_collisions++;
2654 if (!(txstat & DC_TXSTAT_UNDERRUN)) {
2660 ifp->if_collisions += (txstat & DC_TXSTAT_COLLCNT) >> 3;
2663 if (sc->dc_cdata.dc_tx_chain[idx] != NULL) {
2664 m_freem(sc->dc_cdata.dc_tx_chain[idx]);
2665 sc->dc_cdata.dc_tx_chain[idx] = NULL;
2668 sc->dc_cdata.dc_tx_cnt--;
2669 DC_INC(idx, DC_TX_LIST_CNT);
2672 if (idx != sc->dc_cdata.dc_tx_cons) {
2673 /* some buffers have been freed */
2674 sc->dc_cdata.dc_tx_cons = idx;
2675 ifp->if_flags &= ~IFF_OACTIVE;
2677 ifp->if_timer = (sc->dc_cdata.dc_tx_cnt == 0) ? 0 : 5;
2682 static void dc_tick(xsc)
2685 struct dc_softc *sc;
2686 struct mii_data *mii;
2694 ifp = &sc->arpcom.ac_if;
2695 mii = device_get_softc(sc->dc_miibus);
2697 if (sc->dc_flags & DC_REDUCED_MII_POLL) {
2698 if (sc->dc_flags & DC_21143_NWAY) {
2699 r = CSR_READ_4(sc, DC_10BTSTAT);
2700 if (IFM_SUBTYPE(mii->mii_media_active) ==
2701 IFM_100_TX && (r & DC_TSTAT_LS100)) {
2705 if (IFM_SUBTYPE(mii->mii_media_active) ==
2706 IFM_10_T && (r & DC_TSTAT_LS10)) {
2710 if (sc->dc_link == 0)
2713 r = CSR_READ_4(sc, DC_ISR);
2714 if ((r & DC_ISR_RX_STATE) == DC_RXSTATE_WAIT &&
2715 sc->dc_cdata.dc_tx_cnt == 0)
2717 if (!(mii->mii_media_status & IFM_ACTIVE))
2724 * When the init routine completes, we expect to be able to send
2725 * packets right away, and in fact the network code will send a
2726 * gratuitous ARP the moment the init routine marks the interface
2727 * as running. However, even though the MAC may have been initialized,
2728 * there may be a delay of a few seconds before the PHY completes
2729 * autonegotiation and the link is brought up. Any transmissions
2730 * made during that delay will be lost. Dealing with this is tricky:
2731 * we can't just pause in the init routine while waiting for the
2732 * PHY to come ready since that would bring the whole system to
2733 * a screeching halt for several seconds.
2735 * What we do here is prevent the TX start routine from sending
2736 * any packets until a link has been established. After the
2737 * interface has been initialized, the tick routine will poll
2738 * the state of the PHY until the IFM_ACTIVE flag is set. Until
2739 * that time, packets will stay in the send queue, and once the
2740 * link comes up, they will be flushed out to the wire.
2744 if (mii->mii_media_status & IFM_ACTIVE &&
2745 IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
2747 if (ifp->if_snd.ifq_head != NULL)
2752 if (sc->dc_flags & DC_21143_NWAY && !sc->dc_link)
2753 callout_reset(&sc->dc_stat_timer, hz / 10, dc_tick, sc);
2755 callout_reset(&sc->dc_stat_timer, hz, dc_tick, sc);
2763 * A transmit underrun has occurred. Back off the transmit threshold,
2764 * or switch to store and forward mode if we have to.
2766 static void dc_tx_underrun(sc)
2767 struct dc_softc *sc;
2772 if (DC_IS_DAVICOM(sc))
2775 if (DC_IS_INTEL(sc)) {
2777 * The real 21143 requires that the transmitter be idle
2778 * in order to change the transmit threshold or store
2779 * and forward state.
2781 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON);
2783 for (i = 0; i < DC_TIMEOUT; i++) {
2784 isr = CSR_READ_4(sc, DC_ISR);
2785 if (isr & DC_ISR_TX_IDLE)
2789 if (i == DC_TIMEOUT) {
2790 printf("dc%d: failed to force tx to idle state\n",
2796 printf("dc%d: TX underrun -- ", sc->dc_unit);
2797 sc->dc_txthresh += DC_TXTHRESH_INC;
2798 if (sc->dc_txthresh > DC_TXTHRESH_MAX) {
2799 printf("using store and forward mode\n");
2800 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_STORENFWD);
2802 printf("increasing TX threshold\n");
2803 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_TX_THRESH);
2804 DC_SETBIT(sc, DC_NETCFG, sc->dc_txthresh);
2807 if (DC_IS_INTEL(sc))
2808 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON);
2813 #ifdef DEVICE_POLLING
2814 static poll_handler_t dc_poll;
2817 dc_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
2819 struct dc_softc *sc = ifp->if_softc;
2821 if (cmd == POLL_DEREGISTER) { /* final call, enable interrupts */
2822 /* Re-enable interrupts. */
2823 CSR_WRITE_4(sc, DC_IMR, DC_INTRS);
2826 sc->rxcycles = count;
2829 if (ifp->if_snd.ifq_head != NULL && !(ifp->if_flags & IFF_OACTIVE))
2832 if (cmd == POLL_AND_CHECK_STATUS) { /* also check status register */
2835 status = CSR_READ_4(sc, DC_ISR);
2836 status &= (DC_ISR_RX_WATDOGTIMEO|DC_ISR_RX_NOBUF|
2837 DC_ISR_TX_NOBUF|DC_ISR_TX_IDLE|DC_ISR_TX_UNDERRUN|
2841 /* ack what we have */
2842 CSR_WRITE_4(sc, DC_ISR, status);
2844 if (status & (DC_ISR_RX_WATDOGTIMEO|DC_ISR_RX_NOBUF) ) {
2845 u_int32_t r = CSR_READ_4(sc, DC_FRAMESDISCARDED);
2846 ifp->if_ierrors += (r & 0xffff) + ((r >> 17) & 0x7ff);
2848 if (dc_rx_resync(sc))
2851 /* restart transmit unit if necessary */
2852 if (status & DC_ISR_TX_IDLE && sc->dc_cdata.dc_tx_cnt)
2853 CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF);
2855 if (status & DC_ISR_TX_UNDERRUN)
2858 if (status & DC_ISR_BUS_ERR) {
2859 printf("dc_poll: dc%d bus error\n", sc->dc_unit);
2865 #endif /* DEVICE_POLLING */
2867 static void dc_intr(arg)
2870 struct dc_softc *sc;
2876 if (sc->suspended) {
2880 ifp = &sc->arpcom.ac_if;
2882 #ifdef DEVICE_POLLING
2883 if (ifp->if_flags & IFF_POLLING)
2885 if (ether_poll_register(dc_poll, ifp)) { /* ok, disable interrupts */
2886 CSR_WRITE_4(sc, DC_IMR, 0x00000000);
2889 #endif /* DEVICE_POLLING */
2891 if ( (CSR_READ_4(sc, DC_ISR) & DC_INTRS) == 0)
2894 /* Suppress unwanted interrupts */
2895 if (!(ifp->if_flags & IFF_UP)) {
2896 if (CSR_READ_4(sc, DC_ISR) & DC_INTRS)
2901 /* Disable interrupts. */
2902 CSR_WRITE_4(sc, DC_IMR, 0x00000000);
2904 while((status = CSR_READ_4(sc, DC_ISR)) & DC_INTRS) {
2906 CSR_WRITE_4(sc, DC_ISR, status);
2908 if (status & DC_ISR_RX_OK) {
2910 curpkts = ifp->if_ipackets;
2912 if (curpkts == ifp->if_ipackets) {
2913 while(dc_rx_resync(sc))
2918 if (status & (DC_ISR_TX_OK|DC_ISR_TX_NOBUF))
2921 if (status & DC_ISR_TX_IDLE) {
2923 if (sc->dc_cdata.dc_tx_cnt) {
2924 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON);
2925 CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF);
2929 if (status & DC_ISR_TX_UNDERRUN)
2932 if ((status & DC_ISR_RX_WATDOGTIMEO)
2933 || (status & DC_ISR_RX_NOBUF)) {
2935 curpkts = ifp->if_ipackets;
2937 if (curpkts == ifp->if_ipackets) {
2938 while(dc_rx_resync(sc))
2943 if (status & DC_ISR_BUS_ERR) {
2949 /* Re-enable interrupts. */
2950 CSR_WRITE_4(sc, DC_IMR, DC_INTRS);
2952 if (ifp->if_snd.ifq_head != NULL)
2959 * Encapsulate an mbuf chain in a descriptor by coupling the mbuf data
2960 * pointers to the fragment pointers.
2962 static int dc_encap(sc, m_head, txidx)
2963 struct dc_softc *sc;
2964 struct mbuf *m_head;
2967 struct dc_desc *f = NULL;
2969 int frag, cur, cnt = 0;
2972 * Start packing the mbufs in this chain into
2973 * the fragment pointers. Stop when we run out
2974 * of fragments or hit the end of the mbuf chain.
2977 cur = frag = *txidx;
2979 for (m = m_head; m != NULL; m = m->m_next) {
2980 if (m->m_len != 0) {
2981 if (sc->dc_flags & DC_TX_ADMTEK_WAR) {
2982 if (*txidx != sc->dc_cdata.dc_tx_prod &&
2983 frag == (DC_TX_LIST_CNT - 1))
2986 if ((DC_TX_LIST_CNT -
2987 (sc->dc_cdata.dc_tx_cnt + cnt)) < 5)
2990 f = &sc->dc_ldata->dc_tx_list[frag];
2991 f->dc_ctl = DC_TXCTL_TLINK | m->m_len;
2994 f->dc_ctl |= DC_TXCTL_FIRSTFRAG;
2996 f->dc_status = DC_TXSTAT_OWN;
2997 f->dc_data = vtophys(mtod(m, vm_offset_t));
2999 DC_INC(frag, DC_TX_LIST_CNT);
3007 sc->dc_cdata.dc_tx_cnt += cnt;
3008 sc->dc_cdata.dc_tx_chain[cur] = m_head;
3009 sc->dc_ldata->dc_tx_list[cur].dc_ctl |= DC_TXCTL_LASTFRAG;
3010 if (sc->dc_flags & DC_TX_INTR_FIRSTFRAG)
3011 sc->dc_ldata->dc_tx_list[*txidx].dc_ctl |= DC_TXCTL_FINT;
3012 if (sc->dc_flags & DC_TX_INTR_ALWAYS)
3013 sc->dc_ldata->dc_tx_list[cur].dc_ctl |= DC_TXCTL_FINT;
3014 if (sc->dc_flags & DC_TX_USE_TX_INTR && sc->dc_cdata.dc_tx_cnt > 64)
3015 sc->dc_ldata->dc_tx_list[cur].dc_ctl |= DC_TXCTL_FINT;
3016 sc->dc_ldata->dc_tx_list[*txidx].dc_status = DC_TXSTAT_OWN;
3023 * Main transmit routine. To avoid having to do mbuf copies, we put pointers
3024 * to the mbuf data regions directly in the transmit lists. We also save a
3025 * copy of the pointers since the transmit list fragment pointers are
3026 * physical addresses.
3029 static void dc_start(ifp)
3032 struct dc_softc *sc;
3033 struct mbuf *m_head = NULL, *m_new;
3038 if (!sc->dc_link && ifp->if_snd.ifq_len < 10)
3041 if (ifp->if_flags & IFF_OACTIVE)
3044 idx = sc->dc_cdata.dc_tx_prod;
3046 while(sc->dc_cdata.dc_tx_chain[idx] == NULL) {
3047 IF_DEQUEUE(&ifp->if_snd, m_head);
3051 if (sc->dc_flags & DC_TX_COALESCE &&
3052 m_head->m_next != NULL) {
3053 /* only coalesce if have >1 mbufs */
3054 if ((m_new = m_defrag(m_head, MB_DONTWAIT)) == NULL) {
3055 IF_PREPEND(&ifp->if_snd, m_head);
3056 ifp->if_flags |= IFF_OACTIVE;
3063 if (dc_encap(sc, m_head, &idx)) {
3064 IF_PREPEND(&ifp->if_snd, m_head);
3065 ifp->if_flags |= IFF_OACTIVE;
3070 * If there's a BPF listener, bounce a copy of this frame
3073 BPF_MTAP(ifp, m_head);
3075 if (sc->dc_flags & DC_TX_ONE) {
3076 ifp->if_flags |= IFF_OACTIVE;
3082 sc->dc_cdata.dc_tx_prod = idx;
3083 if (!(sc->dc_flags & DC_TX_POLL))
3084 CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF);
3087 * Set a timeout in case the chip goes out to lunch.
3094 static void dc_init(xsc)
3097 struct dc_softc *sc = xsc;
3098 struct ifnet *ifp = &sc->arpcom.ac_if;
3099 struct mii_data *mii;
3104 mii = device_get_softc(sc->dc_miibus);
3107 * Cancel pending I/O and free all RX/TX buffers.
3113 * Set cache alignment and burst length.
3115 if (DC_IS_ASIX(sc) || DC_IS_DAVICOM(sc))
3116 CSR_WRITE_4(sc, DC_BUSCTL, 0);
3118 CSR_WRITE_4(sc, DC_BUSCTL, DC_BUSCTL_MRME|DC_BUSCTL_MRLE);
3120 * Evenly share the bus between receive and transmit process.
3122 if (DC_IS_INTEL(sc))
3123 DC_SETBIT(sc, DC_BUSCTL, DC_BUSCTL_ARBITRATION);
3124 if (DC_IS_DAVICOM(sc) || DC_IS_INTEL(sc)) {
3125 DC_SETBIT(sc, DC_BUSCTL, DC_BURSTLEN_USECA);
3127 DC_SETBIT(sc, DC_BUSCTL, DC_BURSTLEN_16LONG);
3129 if (sc->dc_flags & DC_TX_POLL)
3130 DC_SETBIT(sc, DC_BUSCTL, DC_TXPOLL_1);
3131 switch(sc->dc_cachesize) {
3133 DC_SETBIT(sc, DC_BUSCTL, DC_CACHEALIGN_32LONG);
3136 DC_SETBIT(sc, DC_BUSCTL, DC_CACHEALIGN_16LONG);
3139 DC_SETBIT(sc, DC_BUSCTL, DC_CACHEALIGN_8LONG);
3143 DC_SETBIT(sc, DC_BUSCTL, DC_CACHEALIGN_NONE);
3147 if (sc->dc_flags & DC_TX_STORENFWD)
3148 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_STORENFWD);
3150 if (sc->dc_txthresh > DC_TXTHRESH_MAX) {
3151 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_STORENFWD);
3153 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_STORENFWD);
3154 DC_SETBIT(sc, DC_NETCFG, sc->dc_txthresh);
3158 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_NO_RXCRC);
3159 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_TX_BACKOFF);
3161 if (DC_IS_MACRONIX(sc) || DC_IS_PNICII(sc)) {
3163 * The app notes for the 98713 and 98715A say that
3164 * in order to have the chips operate properly, a magic
3165 * number must be written to CSR16. Macronix does not
3166 * document the meaning of these bits so there's no way
3167 * to know exactly what they do. The 98713 has a magic
3168 * number all its own; the rest all use a different one.
3170 DC_CLRBIT(sc, DC_MX_MAGICPACKET, 0xFFFF0000);
3171 if (sc->dc_type == DC_TYPE_98713)
3172 DC_SETBIT(sc, DC_MX_MAGICPACKET, DC_MX_MAGIC_98713);
3174 DC_SETBIT(sc, DC_MX_MAGICPACKET, DC_MX_MAGIC_98715);
3177 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_TX_THRESH);
3178 DC_SETBIT(sc, DC_NETCFG, DC_TXTHRESH_MIN);
3180 /* Init circular RX list. */
3181 if (dc_list_rx_init(sc) == ENOBUFS) {
3182 printf("dc%d: initialization failed: no "
3183 "memory for rx buffers\n", sc->dc_unit);
3190 * Init tx descriptors.
3192 dc_list_tx_init(sc);
3195 * Load the address of the RX list.
3197 CSR_WRITE_4(sc, DC_RXADDR, vtophys(&sc->dc_ldata->dc_rx_list[0]));
3198 CSR_WRITE_4(sc, DC_TXADDR, vtophys(&sc->dc_ldata->dc_tx_list[0]));
3201 * Enable interrupts.
3203 #ifdef DEVICE_POLLING
3205 * ... but only if we are not polling, and make sure they are off in
3206 * the case of polling. Some cards (e.g. fxp) turn interrupts on
3209 if (ifp->if_flags & IFF_POLLING)
3210 CSR_WRITE_4(sc, DC_IMR, 0x00000000);
3213 CSR_WRITE_4(sc, DC_IMR, DC_INTRS);
3214 CSR_WRITE_4(sc, DC_ISR, 0xFFFFFFFF);
3216 /* Enable transmitter. */
3217 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON);
3220 * If this is an Intel 21143 and we're not using the
3221 * MII port, program the LED control pins so we get
3222 * link and activity indications.
3224 if (sc->dc_flags & DC_TULIP_LEDS) {
3225 CSR_WRITE_4(sc, DC_WATCHDOG,
3226 DC_WDOG_CTLWREN|DC_WDOG_LINK|DC_WDOG_ACTIVITY);
3227 CSR_WRITE_4(sc, DC_WATCHDOG, 0);
3231 * Load the RX/multicast filter. We do this sort of late
3232 * because the filter programming scheme on the 21143 and
3233 * some clones requires DMAing a setup frame via the TX
3234 * engine, and we need the transmitter enabled for that.
3238 /* Enable receiver. */
3239 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ON);
3240 CSR_WRITE_4(sc, DC_RXSTART, 0xFFFFFFFF);
3243 dc_setcfg(sc, sc->dc_if_media);
3245 ifp->if_flags |= IFF_RUNNING;
3246 ifp->if_flags &= ~IFF_OACTIVE;
3250 /* Don't start the ticker if this is a homePNA link. */
3251 if (IFM_SUBTYPE(mii->mii_media.ifm_media) == IFM_HPNA_1)
3254 if (sc->dc_flags & DC_21143_NWAY)
3255 callout_reset(&sc->dc_stat_timer, hz/10, dc_tick, sc);
3257 callout_reset(&sc->dc_stat_timer, hz, dc_tick, sc);
3261 if(sc->dc_srm_media) {
3264 ifr.ifr_media = sc->dc_srm_media;
3265 ifmedia_ioctl(ifp, &ifr, &mii->mii_media, SIOCSIFMEDIA);
3266 sc->dc_srm_media = 0;
3273 * Set media options.
3275 static int dc_ifmedia_upd(ifp)
3278 struct dc_softc *sc;
3279 struct mii_data *mii;
3280 struct ifmedia *ifm;
3283 mii = device_get_softc(sc->dc_miibus);
3285 ifm = &mii->mii_media;
3287 if (DC_IS_DAVICOM(sc) &&
3288 IFM_SUBTYPE(ifm->ifm_media) == IFM_HPNA_1)
3289 dc_setcfg(sc, ifm->ifm_media);
3297 * Report current media status.
3299 static void dc_ifmedia_sts(ifp, ifmr)
3301 struct ifmediareq *ifmr;
3303 struct dc_softc *sc;
3304 struct mii_data *mii;
3305 struct ifmedia *ifm;
3308 mii = device_get_softc(sc->dc_miibus);
3310 ifm = &mii->mii_media;
3311 if (DC_IS_DAVICOM(sc)) {
3312 if (IFM_SUBTYPE(ifm->ifm_media) == IFM_HPNA_1) {
3313 ifmr->ifm_active = ifm->ifm_media;
3314 ifmr->ifm_status = 0;
3318 ifmr->ifm_active = mii->mii_media_active;
3319 ifmr->ifm_status = mii->mii_media_status;
3324 static int dc_ioctl(ifp, command, data, cr)
3330 struct dc_softc *sc = ifp->if_softc;
3331 struct ifreq *ifr = (struct ifreq *) data;
3332 struct mii_data *mii;
3341 error = ether_ioctl(ifp, command, data);
3344 if (ifp->if_flags & IFF_UP) {
3345 int need_setfilt = (ifp->if_flags ^ sc->dc_if_flags) &
3346 (IFF_PROMISC | IFF_ALLMULTI);
3347 if (ifp->if_flags & IFF_RUNNING) {
3351 sc->dc_txthresh = 0;
3355 if (ifp->if_flags & IFF_RUNNING)
3358 sc->dc_if_flags = ifp->if_flags;
3368 mii = device_get_softc(sc->dc_miibus);
3369 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command);
3371 if (sc->dc_srm_media)
3372 sc->dc_srm_media = 0;
3385 static void dc_watchdog(ifp)
3388 struct dc_softc *sc;
3393 printf("dc%d: watchdog timeout\n", sc->dc_unit);
3399 if (ifp->if_snd.ifq_head != NULL)
3406 * Stop the adapter and free any mbufs allocated to the
3409 static void dc_stop(sc)
3410 struct dc_softc *sc;
3415 ifp = &sc->arpcom.ac_if;
3418 callout_stop(&sc->dc_stat_timer);
3420 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
3421 #ifdef DEVICE_POLLING
3422 ether_poll_deregister(ifp);
3425 DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_RX_ON|DC_NETCFG_TX_ON));
3426 CSR_WRITE_4(sc, DC_IMR, 0x00000000);
3427 CSR_WRITE_4(sc, DC_TXADDR, 0x00000000);
3428 CSR_WRITE_4(sc, DC_RXADDR, 0x00000000);
3432 * Free data in the RX lists.
3434 for (i = 0; i < DC_RX_LIST_CNT; i++) {
3435 if (sc->dc_cdata.dc_rx_chain[i] != NULL) {
3436 m_freem(sc->dc_cdata.dc_rx_chain[i]);
3437 sc->dc_cdata.dc_rx_chain[i] = NULL;
3440 bzero((char *)&sc->dc_ldata->dc_rx_list,
3441 sizeof(sc->dc_ldata->dc_rx_list));
3444 * Free the TX list buffers.
3446 for (i = 0; i < DC_TX_LIST_CNT; i++) {
3447 if (sc->dc_cdata.dc_tx_chain[i] != NULL) {
3448 if ((sc->dc_ldata->dc_tx_list[i].dc_ctl &
3450 !(sc->dc_ldata->dc_tx_list[i].dc_ctl &
3451 DC_TXCTL_LASTFRAG)) {
3452 sc->dc_cdata.dc_tx_chain[i] = NULL;
3455 m_freem(sc->dc_cdata.dc_tx_chain[i]);
3456 sc->dc_cdata.dc_tx_chain[i] = NULL;
3460 bzero((char *)&sc->dc_ldata->dc_tx_list,
3461 sizeof(sc->dc_ldata->dc_tx_list));
3467 * Stop all chip I/O so that the kernel's probe routines don't
3468 * get confused by errant DMAs when rebooting.
3470 static void dc_shutdown(dev)
3473 struct dc_softc *sc;
3475 sc = device_get_softc(dev);
3483 * Device suspend routine. Stop the interface and save some PCI
3484 * settings in case the BIOS doesn't restore them properly on
3487 static int dc_suspend(dev)
3492 struct dc_softc *sc;
3496 sc = device_get_softc(dev);
3500 for (i = 0; i < 5; i++)
3501 sc->saved_maps[i] = pci_read_config(dev, PCIR_MAPS + i * 4, 4);
3502 sc->saved_biosaddr = pci_read_config(dev, PCIR_BIOS, 4);
3503 sc->saved_intline = pci_read_config(dev, PCIR_INTLINE, 1);
3504 sc->saved_cachelnsz = pci_read_config(dev, PCIR_CACHELNSZ, 1);
3505 sc->saved_lattimer = pci_read_config(dev, PCIR_LATTIMER, 1);
3514 * Device resume routine. Restore some PCI settings in case the BIOS
3515 * doesn't, re-enable busmastering, and restart the interface if
3518 static int dc_resume(dev)
3523 struct dc_softc *sc;
3528 sc = device_get_softc(dev);
3529 ifp = &sc->arpcom.ac_if;
3533 /* better way to do this? */
3534 for (i = 0; i < 5; i++)
3535 pci_write_config(dev, PCIR_MAPS + i * 4, sc->saved_maps[i], 4);
3536 pci_write_config(dev, PCIR_BIOS, sc->saved_biosaddr, 4);
3537 pci_write_config(dev, PCIR_INTLINE, sc->saved_intline, 1);
3538 pci_write_config(dev, PCIR_CACHELNSZ, sc->saved_cachelnsz, 1);
3539 pci_write_config(dev, PCIR_LATTIMER, sc->saved_lattimer, 1);
3541 /* reenable busmastering */
3542 pci_enable_busmaster(dev);
3543 pci_enable_io(dev, DC_RES);
3545 /* reinitialize interface if necessary */
3546 if (ifp->if_flags & IFF_UP)