2 * Copyright (c) 2001 Wind River Systems
3 * Copyright (c) 1997, 1998, 1999, 2000, 2001
4 * Bill Paul <wpaul@bsdi.com>. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by Bill Paul.
17 * 4. Neither the name of the author nor the names of any co-contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
31 * THE POSSIBILITY OF SUCH DAMAGE.
33 * $FreeBSD: src/sys/dev/nge/if_nge.c,v 1.13.2.13 2003/02/05 22:03:57 mbr Exp $
34 * $DragonFly: src/sys/dev/netif/nge/if_nge.c,v 1.43 2007/08/14 13:30:35 sephe Exp $
38 * National Semiconductor DP83820/DP83821 gigabit ethernet driver
39 * for FreeBSD. Datasheets are available from:
41 * http://www.national.com/ds/DP/DP83820.pdf
42 * http://www.national.com/ds/DP/DP83821.pdf
44 * These chips are used on several low cost gigabit ethernet NICs
45 * sold by D-Link, Addtron, SMC and Asante. Both parts are
46 * virtually the same, except the 83820 is a 64-bit/32-bit part,
47 * while the 83821 is 32-bit only.
49 * Many cards also use National gigE transceivers, such as the
50 * DP83891, DP83861 and DP83862 gigPHYTER parts. The DP83861 datasheet
51 * contains a full register description that applies to all of these
54 * http://www.national.com/ds/DP/DP83861.pdf
56 * Written by Bill Paul <wpaul@bsdi.com>
57 * BSDi Open Source Solutions
61 * The NatSemi DP83820 and 83821 controllers are enhanced versions
62 * of the NatSemi MacPHYTER 10/100 devices. They support 10, 100
63 * and 1000Mbps speeds with 1000baseX (ten bit interface), MII and GMII
64 * ports. Other features include 8K TX FIFO and 32K RX FIFO, TCP/IP
65 * hardware checksum offload (IPv4 only), VLAN tagging and filtering,
66 * priority TX and RX queues, a 2048 bit multicast hash filter, 4 RX pattern
67 * matching buffers, one perfect address filter buffer and interrupt
68 * moderation. The 83820 supports both 64-bit and 32-bit addressing
69 * and data transfers: the 64-bit support can be toggled on or off
70 * via software. This affects the size of certain fields in the DMA
73 * There are two bugs/misfeatures in the 83820/83821 that I have
76 * - Receive buffers must be aligned on 64-bit boundaries, which means
77 * you must resort to copying data in order to fix up the payload
80 * - In order to transmit jumbo frames larger than 8170 bytes, you have
81 * to turn off transmit checksum offloading, because the chip can't
82 * compute the checksum on an outgoing frame unless it fits entirely
83 * within the TX FIFO, which is only 8192 bytes in size. If you have
84 * TX checksum offload enabled and you transmit attempt to transmit a
85 * frame larger than 8170 bytes, the transmitter will wedge.
87 * To work around the latter problem, TX checksum offload is disabled
88 * if the user selects an MTU larger than 8152 (8170 - 18).
91 #include "opt_polling.h"
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/serialize.h>
102 #include <sys/rman.h>
103 #include <sys/thread2.h>
106 #include <net/ifq_var.h>
107 #include <net/if_arp.h>
108 #include <net/ethernet.h>
109 #include <net/if_dl.h>
110 #include <net/if_media.h>
111 #include <net/if_types.h>
112 #include <net/vlan/if_vlan_var.h>
116 #include <vm/vm.h> /* for vtophys */
117 #include <vm/pmap.h> /* for vtophys */
119 #include <dev/netif/mii_layer/mii.h>
120 #include <dev/netif/mii_layer/miivar.h>
122 #include <bus/pci/pcidevs.h>
123 #include <bus/pci/pcireg.h>
124 #include <bus/pci/pcivar.h>
126 #define NGE_USEIOSPACE
128 #include "if_ngereg.h"
131 /* "controller miibus0" required. See GENERIC if you get errors here. */
132 #include "miibus_if.h"
134 #define NGE_CSUM_FEATURES (CSUM_IP | CSUM_TCP | CSUM_UDP)
137 * Various supported device vendors/types and their names.
139 static struct nge_type nge_devs
[] = {
140 { PCI_VENDOR_NS
, PCI_PRODUCT_NS_DP83820
,
141 "National Semiconductor Gigabit Ethernet" },
145 static int nge_probe(device_t
);
146 static int nge_attach(device_t
);
147 static int nge_detach(device_t
);
149 static int nge_alloc_jumbo_mem(struct nge_softc
*);
150 static struct nge_jslot
151 *nge_jalloc(struct nge_softc
*);
152 static void nge_jfree(void *);
153 static void nge_jref(void *);
155 static int nge_newbuf(struct nge_softc
*, struct nge_desc
*,
157 static int nge_encap(struct nge_softc
*, struct mbuf
*, uint32_t *);
158 static void nge_rxeof(struct nge_softc
*);
159 static void nge_txeof(struct nge_softc
*);
160 static void nge_intr(void *);
161 static void nge_tick(void *);
162 static void nge_start(struct ifnet
*);
163 static int nge_ioctl(struct ifnet
*, u_long
, caddr_t
, struct ucred
*);
164 static void nge_init(void *);
165 static void nge_stop(struct nge_softc
*);
166 static void nge_watchdog(struct ifnet
*);
167 static void nge_shutdown(device_t
);
168 static int nge_ifmedia_upd(struct ifnet
*);
169 static void nge_ifmedia_sts(struct ifnet
*, struct ifmediareq
*);
171 static void nge_delay(struct nge_softc
*);
172 static void nge_eeprom_idle(struct nge_softc
*);
173 static void nge_eeprom_putbyte(struct nge_softc
*, int);
174 static void nge_eeprom_getword(struct nge_softc
*, int, uint16_t *);
175 static void nge_read_eeprom(struct nge_softc
*, void *, int, int);
177 static void nge_mii_sync(struct nge_softc
*);
178 static void nge_mii_send(struct nge_softc
*, uint32_t, int);
179 static int nge_mii_readreg(struct nge_softc
*, struct nge_mii_frame
*);
180 static int nge_mii_writereg(struct nge_softc
*, struct nge_mii_frame
*);
182 static int nge_miibus_readreg(device_t
, int, int);
183 static int nge_miibus_writereg(device_t
, int, int, int);
184 static void nge_miibus_statchg(device_t
);
186 static void nge_setmulti(struct nge_softc
*);
187 static void nge_reset(struct nge_softc
*);
188 static int nge_list_rx_init(struct nge_softc
*);
189 static int nge_list_tx_init(struct nge_softc
*);
190 #ifdef DEVICE_POLLING
191 static void nge_poll(struct ifnet
*ifp
, enum poll_cmd cmd
, int count
);
194 #ifdef NGE_USEIOSPACE
195 #define NGE_RES SYS_RES_IOPORT
196 #define NGE_RID NGE_PCI_LOIO
198 #define NGE_RES SYS_RES_MEMORY
199 #define NGE_RID NGE_PCI_LOMEM
202 static device_method_t nge_methods
[] = {
203 /* Device interface */
204 DEVMETHOD(device_probe
, nge_probe
),
205 DEVMETHOD(device_attach
, nge_attach
),
206 DEVMETHOD(device_detach
, nge_detach
),
207 DEVMETHOD(device_shutdown
, nge_shutdown
),
210 DEVMETHOD(bus_print_child
, bus_generic_print_child
),
211 DEVMETHOD(bus_driver_added
, bus_generic_driver_added
),
214 DEVMETHOD(miibus_readreg
, nge_miibus_readreg
),
215 DEVMETHOD(miibus_writereg
, nge_miibus_writereg
),
216 DEVMETHOD(miibus_statchg
, nge_miibus_statchg
),
221 static DEFINE_CLASS_0(nge
, nge_driver
, nge_methods
, sizeof(struct nge_softc
));
222 static devclass_t nge_devclass
;
224 DECLARE_DUMMY_MODULE(if_nge
);
225 MODULE_DEPEND(if_nge
, miibus
, 1, 1, 1);
226 DRIVER_MODULE(if_nge
, pci
, nge_driver
, nge_devclass
, 0, 0);
227 DRIVER_MODULE(miibus
, nge
, miibus_driver
, miibus_devclass
, 0, 0);
229 #define NGE_SETBIT(sc, reg, x) \
230 CSR_WRITE_4(sc, reg, CSR_READ_4(sc, reg) | (x))
232 #define NGE_CLRBIT(sc, reg, x) \
233 CSR_WRITE_4(sc, reg, CSR_READ_4(sc, reg) & ~(x))
236 CSR_WRITE_4(sc, NGE_MEAR, CSR_READ_4(sc, NGE_MEAR) | (x))
239 CSR_WRITE_4(sc, NGE_MEAR, CSR_READ_4(sc, NGE_MEAR) & ~(x))
242 nge_delay(struct nge_softc
*sc
)
246 for (idx
= (300 / 33) + 1; idx
> 0; idx
--)
247 CSR_READ_4(sc
, NGE_CSR
);
251 nge_eeprom_idle(struct nge_softc
*sc
)
255 SIO_SET(NGE_MEAR_EE_CSEL
);
257 SIO_SET(NGE_MEAR_EE_CLK
);
260 for (i
= 0; i
< 25; i
++) {
261 SIO_CLR(NGE_MEAR_EE_CLK
);
263 SIO_SET(NGE_MEAR_EE_CLK
);
267 SIO_CLR(NGE_MEAR_EE_CLK
);
269 SIO_CLR(NGE_MEAR_EE_CSEL
);
271 CSR_WRITE_4(sc
, NGE_MEAR
, 0x00000000);
275 * Send a read command and address to the EEPROM, check for ACK.
278 nge_eeprom_putbyte(struct nge_softc
*sc
, int addr
)
282 d
= addr
| NGE_EECMD_READ
;
285 * Feed in each bit and stobe the clock.
287 for (i
= 0x400; i
; i
>>= 1) {
289 SIO_SET(NGE_MEAR_EE_DIN
);
291 SIO_CLR(NGE_MEAR_EE_DIN
);
293 SIO_SET(NGE_MEAR_EE_CLK
);
295 SIO_CLR(NGE_MEAR_EE_CLK
);
301 * Read a word of data stored in the EEPROM at address 'addr.'
304 nge_eeprom_getword(struct nge_softc
*sc
, int addr
, uint16_t *dest
)
309 /* Force EEPROM to idle state. */
312 /* Enter EEPROM access mode. */
314 SIO_CLR(NGE_MEAR_EE_CLK
);
316 SIO_SET(NGE_MEAR_EE_CSEL
);
320 * Send address of word we want to read.
322 nge_eeprom_putbyte(sc
, addr
);
325 * Start reading bits from EEPROM.
327 for (i
= 0x8000; i
; i
>>= 1) {
328 SIO_SET(NGE_MEAR_EE_CLK
);
330 if (CSR_READ_4(sc
, NGE_MEAR
) & NGE_MEAR_EE_DOUT
)
333 SIO_CLR(NGE_MEAR_EE_CLK
);
337 /* Turn off EEPROM access mode. */
344 * Read a sequence of words from the EEPROM.
347 nge_read_eeprom(struct nge_softc
*sc
, void *dest
, int off
, int cnt
)
350 uint16_t word
= 0, *ptr
;
352 for (i
= 0; i
< cnt
; i
++) {
353 nge_eeprom_getword(sc
, off
+ i
, &word
);
354 ptr
= (uint16_t *)((uint8_t *)dest
+ (i
* 2));
360 * Sync the PHYs by setting data bit and strobing the clock 32 times.
363 nge_mii_sync(struct nge_softc
*sc
)
367 SIO_SET(NGE_MEAR_MII_DIR
| NGE_MEAR_MII_DATA
);
369 for (i
= 0; i
< 32; i
++) {
370 SIO_SET(NGE_MEAR_MII_CLK
);
372 SIO_CLR(NGE_MEAR_MII_CLK
);
378 * Clock a series of bits through the MII.
381 nge_mii_send(struct nge_softc
*sc
, uint32_t bits
, int cnt
)
385 SIO_CLR(NGE_MEAR_MII_CLK
);
387 for (i
= (0x1 << (cnt
- 1)); i
; i
>>= 1) {
389 SIO_SET(NGE_MEAR_MII_DATA
);
391 SIO_CLR(NGE_MEAR_MII_DATA
);
393 SIO_CLR(NGE_MEAR_MII_CLK
);
395 SIO_SET(NGE_MEAR_MII_CLK
);
400 * Read an PHY register through the MII.
403 nge_mii_readreg(struct nge_softc
*sc
, struct nge_mii_frame
*frame
)
408 * Set up frame for RX.
410 frame
->mii_stdelim
= NGE_MII_STARTDELIM
;
411 frame
->mii_opcode
= NGE_MII_READOP
;
412 frame
->mii_turnaround
= 0;
415 CSR_WRITE_4(sc
, NGE_MEAR
, 0);
420 SIO_SET(NGE_MEAR_MII_DIR
);
425 * Send command/address info.
427 nge_mii_send(sc
, frame
->mii_stdelim
, 2);
428 nge_mii_send(sc
, frame
->mii_opcode
, 2);
429 nge_mii_send(sc
, frame
->mii_phyaddr
, 5);
430 nge_mii_send(sc
, frame
->mii_regaddr
, 5);
433 SIO_CLR((NGE_MEAR_MII_CLK
| NGE_MEAR_MII_DATA
));
435 SIO_SET(NGE_MEAR_MII_CLK
);
439 SIO_CLR(NGE_MEAR_MII_DIR
);
441 SIO_CLR(NGE_MEAR_MII_CLK
);
443 ack
= CSR_READ_4(sc
, NGE_MEAR
) & NGE_MEAR_MII_DATA
;
444 SIO_SET(NGE_MEAR_MII_CLK
);
448 * Now try reading data bits. If the ack failed, we still
449 * need to clock through 16 cycles to keep the PHY(s) in sync.
452 for(i
= 0; i
< 16; i
++) {
453 SIO_CLR(NGE_MEAR_MII_CLK
);
455 SIO_SET(NGE_MEAR_MII_CLK
);
461 for (i
= 0x8000; i
; i
>>= 1) {
462 SIO_CLR(NGE_MEAR_MII_CLK
);
465 if (CSR_READ_4(sc
, NGE_MEAR
) & NGE_MEAR_MII_DATA
)
466 frame
->mii_data
|= i
;
469 SIO_SET(NGE_MEAR_MII_CLK
);
474 SIO_CLR(NGE_MEAR_MII_CLK
);
476 SIO_SET(NGE_MEAR_MII_CLK
);
485 * Write to a PHY register through the MII.
488 nge_mii_writereg(struct nge_softc
*sc
, struct nge_mii_frame
*frame
)
491 * Set up frame for TX.
494 frame
->mii_stdelim
= NGE_MII_STARTDELIM
;
495 frame
->mii_opcode
= NGE_MII_WRITEOP
;
496 frame
->mii_turnaround
= NGE_MII_TURNAROUND
;
499 * Turn on data output.
501 SIO_SET(NGE_MEAR_MII_DIR
);
505 nge_mii_send(sc
, frame
->mii_stdelim
, 2);
506 nge_mii_send(sc
, frame
->mii_opcode
, 2);
507 nge_mii_send(sc
, frame
->mii_phyaddr
, 5);
508 nge_mii_send(sc
, frame
->mii_regaddr
, 5);
509 nge_mii_send(sc
, frame
->mii_turnaround
, 2);
510 nge_mii_send(sc
, frame
->mii_data
, 16);
513 SIO_SET(NGE_MEAR_MII_CLK
);
515 SIO_CLR(NGE_MEAR_MII_CLK
);
521 SIO_CLR(NGE_MEAR_MII_DIR
);
527 nge_miibus_readreg(device_t dev
, int phy
, int reg
)
529 struct nge_softc
*sc
= device_get_softc(dev
);
530 struct nge_mii_frame frame
;
532 bzero((char *)&frame
, sizeof(frame
));
534 frame
.mii_phyaddr
= phy
;
535 frame
.mii_regaddr
= reg
;
536 nge_mii_readreg(sc
, &frame
);
538 return(frame
.mii_data
);
542 nge_miibus_writereg(device_t dev
, int phy
, int reg
, int data
)
544 struct nge_softc
*sc
= device_get_softc(dev
);
545 struct nge_mii_frame frame
;
547 bzero((char *)&frame
, sizeof(frame
));
549 frame
.mii_phyaddr
= phy
;
550 frame
.mii_regaddr
= reg
;
551 frame
.mii_data
= data
;
552 nge_mii_writereg(sc
, &frame
);
558 nge_miibus_statchg(device_t dev
)
560 struct nge_softc
*sc
= device_get_softc(dev
);
561 struct mii_data
*mii
;
565 if (IFM_SUBTYPE(sc
->nge_ifmedia
.ifm_cur
->ifm_media
)
567 status
= CSR_READ_4(sc
, NGE_TBI_ANLPAR
);
568 if (status
== 0 || status
& NGE_TBIANAR_FDX
) {
569 NGE_SETBIT(sc
, NGE_TX_CFG
,
570 (NGE_TXCFG_IGN_HBEAT
| NGE_TXCFG_IGN_CARR
));
571 NGE_SETBIT(sc
, NGE_RX_CFG
, NGE_RXCFG_RX_FDX
);
573 NGE_CLRBIT(sc
, NGE_TX_CFG
,
574 (NGE_TXCFG_IGN_HBEAT
| NGE_TXCFG_IGN_CARR
));
575 NGE_CLRBIT(sc
, NGE_RX_CFG
, NGE_RXCFG_RX_FDX
);
577 } else if ((sc
->nge_ifmedia
.ifm_cur
->ifm_media
& IFM_GMASK
)
579 NGE_CLRBIT(sc
, NGE_TX_CFG
,
580 (NGE_TXCFG_IGN_HBEAT
| NGE_TXCFG_IGN_CARR
));
581 NGE_CLRBIT(sc
, NGE_RX_CFG
, NGE_RXCFG_RX_FDX
);
583 NGE_SETBIT(sc
, NGE_TX_CFG
,
584 (NGE_TXCFG_IGN_HBEAT
| NGE_TXCFG_IGN_CARR
));
585 NGE_SETBIT(sc
, NGE_RX_CFG
, NGE_RXCFG_RX_FDX
);
588 mii
= device_get_softc(sc
->nge_miibus
);
590 if ((mii
->mii_media_active
& IFM_GMASK
) == IFM_FDX
) {
591 NGE_SETBIT(sc
, NGE_TX_CFG
,
592 (NGE_TXCFG_IGN_HBEAT
| NGE_TXCFG_IGN_CARR
));
593 NGE_SETBIT(sc
, NGE_RX_CFG
, NGE_RXCFG_RX_FDX
);
595 NGE_CLRBIT(sc
, NGE_TX_CFG
,
596 (NGE_TXCFG_IGN_HBEAT
| NGE_TXCFG_IGN_CARR
));
597 NGE_CLRBIT(sc
, NGE_RX_CFG
, NGE_RXCFG_RX_FDX
);
600 /* If we have a 1000Mbps link, set the mode_1000 bit. */
601 if (IFM_SUBTYPE(mii
->mii_media_active
) == IFM_1000_T
||
602 IFM_SUBTYPE(mii
->mii_media_active
) == IFM_1000_SX
) {
603 NGE_SETBIT(sc
, NGE_CFG
, NGE_CFG_MODE_1000
);
605 NGE_CLRBIT(sc
, NGE_CFG
, NGE_CFG_MODE_1000
);
611 nge_setmulti(struct nge_softc
*sc
)
613 struct ifnet
*ifp
= &sc
->arpcom
.ac_if
;
614 struct ifmultiaddr
*ifma
;
615 uint32_t filtsave
, h
= 0, i
;
618 if (ifp
->if_flags
& IFF_ALLMULTI
|| ifp
->if_flags
& IFF_PROMISC
) {
619 NGE_CLRBIT(sc
, NGE_RXFILT_CTL
,
620 NGE_RXFILTCTL_MCHASH
| NGE_RXFILTCTL_UCHASH
);
621 NGE_SETBIT(sc
, NGE_RXFILT_CTL
, NGE_RXFILTCTL_ALLMULTI
);
626 * We have to explicitly enable the multicast hash table
627 * on the NatSemi chip if we want to use it, which we do.
628 * We also have to tell it that we don't want to use the
629 * hash table for matching unicast addresses.
631 NGE_SETBIT(sc
, NGE_RXFILT_CTL
, NGE_RXFILTCTL_MCHASH
);
632 NGE_CLRBIT(sc
, NGE_RXFILT_CTL
,
633 NGE_RXFILTCTL_ALLMULTI
| NGE_RXFILTCTL_UCHASH
);
635 filtsave
= CSR_READ_4(sc
, NGE_RXFILT_CTL
);
637 /* first, zot all the existing hash bits */
638 for (i
= 0; i
< NGE_MCAST_FILTER_LEN
; i
+= 2) {
639 CSR_WRITE_4(sc
, NGE_RXFILT_CTL
, NGE_FILTADDR_MCAST_LO
+ i
);
640 CSR_WRITE_4(sc
, NGE_RXFILT_DATA
, 0);
644 * From the 11 bits returned by the crc routine, the top 7
645 * bits represent the 16-bit word in the mcast hash table
646 * that needs to be updated, and the lower 4 bits represent
647 * which bit within that byte needs to be set.
649 LIST_FOREACH(ifma
, &ifp
->if_multiaddrs
, ifma_link
) {
650 if (ifma
->ifma_addr
->sa_family
!= AF_LINK
)
652 h
= ether_crc32_be(LLADDR((struct sockaddr_dl
*)
653 ifma
->ifma_addr
), ETHER_ADDR_LEN
) >> 21;
654 index
= (h
>> 4) & 0x7F;
656 CSR_WRITE_4(sc
, NGE_RXFILT_CTL
,
657 NGE_FILTADDR_MCAST_LO
+ (index
* 2));
658 NGE_SETBIT(sc
, NGE_RXFILT_DATA
, (1 << bit
));
661 CSR_WRITE_4(sc
, NGE_RXFILT_CTL
, filtsave
);
665 nge_reset(struct nge_softc
*sc
)
669 NGE_SETBIT(sc
, NGE_CSR
, NGE_CSR_RESET
);
671 for (i
= 0; i
< NGE_TIMEOUT
; i
++) {
672 if ((CSR_READ_4(sc
, NGE_CSR
) & NGE_CSR_RESET
) == 0)
676 if (i
== NGE_TIMEOUT
)
677 kprintf("nge%d: reset never completed\n", sc
->nge_unit
);
679 /* Wait a little while for the chip to get its brains in order. */
683 * If this is a NetSemi chip, make sure to clear
686 CSR_WRITE_4(sc
, NGE_CLKRUN
, NGE_CLKRUN_PMESTS
);
687 CSR_WRITE_4(sc
, NGE_CLKRUN
, 0);
691 * Probe for an NatSemi chip. Check the PCI vendor and device
692 * IDs against our list and return a device name if we find a match.
695 nge_probe(device_t dev
)
698 uint16_t vendor
, product
;
700 vendor
= pci_get_vendor(dev
);
701 product
= pci_get_device(dev
);
703 for (t
= nge_devs
; t
->nge_name
!= NULL
; t
++) {
704 if (vendor
== t
->nge_vid
&& product
== t
->nge_did
) {
705 device_set_desc(dev
, t
->nge_name
);
714 * Attach the interface. Allocate softc structures, do ifmedia
715 * setup and ethernet/BPF attach.
718 nge_attach(device_t dev
)
720 struct nge_softc
*sc
;
722 uint8_t eaddr
[ETHER_ADDR_LEN
];
724 int error
= 0, rid
, unit
;
725 const char *sep
= "";
727 sc
= device_get_softc(dev
);
728 unit
= device_get_unit(dev
);
729 callout_init(&sc
->nge_stat_timer
);
730 lwkt_serialize_init(&sc
->nge_jslot_serializer
);
733 * Handle power management nonsense.
735 command
= pci_read_config(dev
, NGE_PCI_CAPID
, 4) & 0x000000FF;
736 if (command
== 0x01) {
737 command
= pci_read_config(dev
, NGE_PCI_PWRMGMTCTRL
, 4);
738 if (command
& NGE_PSTATE_MASK
) {
739 uint32_t iobase
, membase
, irq
;
741 /* Save important PCI config data. */
742 iobase
= pci_read_config(dev
, NGE_PCI_LOIO
, 4);
743 membase
= pci_read_config(dev
, NGE_PCI_LOMEM
, 4);
744 irq
= pci_read_config(dev
, NGE_PCI_INTLINE
, 4);
746 /* Reset the power state. */
747 kprintf("nge%d: chip is in D%d power mode "
748 "-- setting to D0\n", unit
, command
& NGE_PSTATE_MASK
);
749 command
&= 0xFFFFFFFC;
750 pci_write_config(dev
, NGE_PCI_PWRMGMTCTRL
, command
, 4);
752 /* Restore PCI config data. */
753 pci_write_config(dev
, NGE_PCI_LOIO
, iobase
, 4);
754 pci_write_config(dev
, NGE_PCI_LOMEM
, membase
, 4);
755 pci_write_config(dev
, NGE_PCI_INTLINE
, irq
, 4);
760 * Map control/status registers.
762 command
= pci_read_config(dev
, PCIR_COMMAND
, 4);
763 command
|= (PCIM_CMD_PORTEN
|PCIM_CMD_MEMEN
|PCIM_CMD_BUSMASTEREN
);
764 pci_write_config(dev
, PCIR_COMMAND
, command
, 4);
765 command
= pci_read_config(dev
, PCIR_COMMAND
, 4);
767 #ifdef NGE_USEIOSPACE
768 if (!(command
& PCIM_CMD_PORTEN
)) {
769 kprintf("nge%d: failed to enable I/O ports!\n", unit
);
774 if (!(command
& PCIM_CMD_MEMEN
)) {
775 kprintf("nge%d: failed to enable memory mapping!\n", unit
);
782 sc
->nge_res
= bus_alloc_resource_any(dev
, NGE_RES
, &rid
, RF_ACTIVE
);
784 if (sc
->nge_res
== NULL
) {
785 kprintf("nge%d: couldn't map ports/memory\n", unit
);
790 sc
->nge_btag
= rman_get_bustag(sc
->nge_res
);
791 sc
->nge_bhandle
= rman_get_bushandle(sc
->nge_res
);
793 /* Allocate interrupt */
795 sc
->nge_irq
= bus_alloc_resource_any(dev
, SYS_RES_IRQ
, &rid
,
796 RF_SHAREABLE
| RF_ACTIVE
);
798 if (sc
->nge_irq
== NULL
) {
799 kprintf("nge%d: couldn't map interrupt\n", unit
);
804 /* Reset the adapter. */
808 * Get station address from the EEPROM.
810 nge_read_eeprom(sc
, &eaddr
[4], NGE_EE_NODEADDR
, 1);
811 nge_read_eeprom(sc
, &eaddr
[2], NGE_EE_NODEADDR
+ 1, 1);
812 nge_read_eeprom(sc
, &eaddr
[0], NGE_EE_NODEADDR
+ 2, 1);
816 sc
->nge_ldata
= contigmalloc(sizeof(struct nge_list_data
), M_DEVBUF
,
817 M_WAITOK
, 0, 0xffffffff, PAGE_SIZE
, 0);
819 if (sc
->nge_ldata
== NULL
) {
820 kprintf("nge%d: no memory for list buffers!\n", unit
);
824 bzero(sc
->nge_ldata
, sizeof(struct nge_list_data
));
826 /* Try to allocate memory for jumbo buffers. */
827 if (nge_alloc_jumbo_mem(sc
)) {
828 kprintf("nge%d: jumbo buffer allocation failed\n",
834 ifp
= &sc
->arpcom
.ac_if
;
836 if_initname(ifp
, "nge", unit
);
837 ifp
->if_mtu
= ETHERMTU
;
838 ifp
->if_flags
= IFF_BROADCAST
| IFF_SIMPLEX
| IFF_MULTICAST
;
839 ifp
->if_ioctl
= nge_ioctl
;
840 ifp
->if_start
= nge_start
;
841 #ifdef DEVICE_POLLING
842 ifp
->if_poll
= nge_poll
;
844 ifp
->if_watchdog
= nge_watchdog
;
845 ifp
->if_init
= nge_init
;
846 ifp
->if_baudrate
= 1000000000;
847 ifq_set_maxlen(&ifp
->if_snd
, NGE_TX_LIST_CNT
- 1);
848 ifq_set_ready(&ifp
->if_snd
);
849 ifp
->if_hwassist
= NGE_CSUM_FEATURES
;
850 ifp
->if_capabilities
= IFCAP_HWCSUM
| IFCAP_VLAN_HWTAGGING
;
851 ifp
->if_capenable
= ifp
->if_capabilities
;
856 if (mii_phy_probe(dev
, &sc
->nge_miibus
,
857 nge_ifmedia_upd
, nge_ifmedia_sts
)) {
858 if (CSR_READ_4(sc
, NGE_CFG
) & NGE_CFG_TBI_EN
) {
860 device_printf(dev
, "Using TBI\n");
862 sc
->nge_miibus
= dev
;
864 ifmedia_init(&sc
->nge_ifmedia
, 0, nge_ifmedia_upd
,
866 #define ADD(m, c) ifmedia_add(&sc->nge_ifmedia, (m), (c), NULL)
867 #define PRINT(s) kprintf("%s%s", sep, s); sep = ", "
868 ADD(IFM_MAKEWORD(IFM_ETHER
, IFM_NONE
, 0, 0), 0);
869 device_printf(dev
, " ");
870 ADD(IFM_MAKEWORD(IFM_ETHER
, IFM_1000_SX
, 0, 0), 0);
872 ADD(IFM_MAKEWORD(IFM_ETHER
, IFM_1000_SX
, IFM_FDX
, 0),0);
873 PRINT("1000baseSX-FDX");
874 ADD(IFM_MAKEWORD(IFM_ETHER
, IFM_AUTO
, 0, 0), 0);
880 ifmedia_set(&sc
->nge_ifmedia
,
881 IFM_MAKEWORD(IFM_ETHER
, IFM_AUTO
, 0, 0));
883 CSR_WRITE_4(sc
, NGE_GPIO
, CSR_READ_4(sc
, NGE_GPIO
)
885 | NGE_GPIO_GP1_OUTENB
| NGE_GPIO_GP2_OUTENB
886 | NGE_GPIO_GP3_OUTENB
887 | NGE_GPIO_GP3_IN
| NGE_GPIO_GP4_IN
);
890 kprintf("nge%d: MII without any PHY!\n", sc
->nge_unit
);
897 * Call MI attach routine.
899 ether_ifattach(ifp
, eaddr
, NULL
);
901 error
= bus_setup_intr(dev
, sc
->nge_irq
, INTR_NETSAFE
,
902 nge_intr
, sc
, &sc
->nge_intrhand
,
906 device_printf(dev
, "couldn't set up irq\n");
917 nge_detach(device_t dev
)
919 struct nge_softc
*sc
= device_get_softc(dev
);
920 struct ifnet
*ifp
= &sc
->arpcom
.ac_if
;
922 if (device_is_attached(dev
)) {
923 lwkt_serialize_enter(ifp
->if_serializer
);
926 bus_teardown_intr(dev
, sc
->nge_irq
, sc
->nge_intrhand
);
927 lwkt_serialize_exit(ifp
->if_serializer
);
933 device_delete_child(dev
, sc
->nge_miibus
);
934 bus_generic_detach(dev
);
937 bus_release_resource(dev
, SYS_RES_IRQ
, 0, sc
->nge_irq
);
939 bus_release_resource(dev
, NGE_RES
, NGE_RID
, sc
->nge_res
);
941 contigfree(sc
->nge_ldata
, sizeof(struct nge_list_data
),
944 if (sc
->nge_cdata
.nge_jumbo_buf
)
945 contigfree(sc
->nge_cdata
.nge_jumbo_buf
, NGE_JMEM
, M_DEVBUF
);
951 * Initialize the transmit descriptors.
954 nge_list_tx_init(struct nge_softc
*sc
)
956 struct nge_list_data
*ld
;
957 struct nge_ring_data
*cd
;
963 for (i
= 0; i
< NGE_TX_LIST_CNT
; i
++) {
964 if (i
== (NGE_TX_LIST_CNT
- 1)) {
965 ld
->nge_tx_list
[i
].nge_nextdesc
=
967 ld
->nge_tx_list
[i
].nge_next
=
968 vtophys(&ld
->nge_tx_list
[0]);
970 ld
->nge_tx_list
[i
].nge_nextdesc
=
971 &ld
->nge_tx_list
[i
+ 1];
972 ld
->nge_tx_list
[i
].nge_next
=
973 vtophys(&ld
->nge_tx_list
[i
+ 1]);
975 ld
->nge_tx_list
[i
].nge_mbuf
= NULL
;
976 ld
->nge_tx_list
[i
].nge_ptr
= 0;
977 ld
->nge_tx_list
[i
].nge_ctl
= 0;
980 cd
->nge_tx_prod
= cd
->nge_tx_cons
= cd
->nge_tx_cnt
= 0;
987 * Initialize the RX descriptors and allocate mbufs for them. Note that
988 * we arrange the descriptors in a closed ring, so that the last descriptor
989 * points back to the first.
992 nge_list_rx_init(struct nge_softc
*sc
)
994 struct nge_list_data
*ld
;
995 struct nge_ring_data
*cd
;
1001 for (i
= 0; i
< NGE_RX_LIST_CNT
; i
++) {
1002 if (nge_newbuf(sc
, &ld
->nge_rx_list
[i
], NULL
) == ENOBUFS
)
1004 if (i
== (NGE_RX_LIST_CNT
- 1)) {
1005 ld
->nge_rx_list
[i
].nge_nextdesc
=
1006 &ld
->nge_rx_list
[0];
1007 ld
->nge_rx_list
[i
].nge_next
=
1008 vtophys(&ld
->nge_rx_list
[0]);
1010 ld
->nge_rx_list
[i
].nge_nextdesc
=
1011 &ld
->nge_rx_list
[i
+ 1];
1012 ld
->nge_rx_list
[i
].nge_next
=
1013 vtophys(&ld
->nge_rx_list
[i
+ 1]);
1017 cd
->nge_rx_prod
= 0;
1023 * Initialize an RX descriptor and attach an MBUF cluster.
1026 nge_newbuf(struct nge_softc
*sc
, struct nge_desc
*c
, struct mbuf
*m
)
1028 struct mbuf
*m_new
= NULL
;
1029 struct nge_jslot
*buf
;
1032 MGETHDR(m_new
, MB_DONTWAIT
, MT_DATA
);
1033 if (m_new
== NULL
) {
1034 kprintf("nge%d: no memory for rx list "
1035 "-- packet dropped!\n", sc
->nge_unit
);
1039 /* Allocate the jumbo buffer */
1040 buf
= nge_jalloc(sc
);
1043 kprintf("nge%d: jumbo allocation failed "
1044 "-- packet dropped!\n", sc
->nge_unit
);
1049 /* Attach the buffer to the mbuf */
1050 m_new
->m_ext
.ext_arg
= buf
;
1051 m_new
->m_ext
.ext_buf
= buf
->nge_buf
;
1052 m_new
->m_ext
.ext_free
= nge_jfree
;
1053 m_new
->m_ext
.ext_ref
= nge_jref
;
1054 m_new
->m_ext
.ext_size
= NGE_JUMBO_FRAMELEN
;
1056 m_new
->m_data
= m_new
->m_ext
.ext_buf
;
1057 m_new
->m_flags
|= M_EXT
;
1058 m_new
->m_len
= m_new
->m_pkthdr
.len
= m_new
->m_ext
.ext_size
;
1061 m_new
->m_len
= m_new
->m_pkthdr
.len
= NGE_JLEN
;
1062 m_new
->m_data
= m_new
->m_ext
.ext_buf
;
1065 m_adj(m_new
, sizeof(uint64_t));
1067 c
->nge_mbuf
= m_new
;
1068 c
->nge_ptr
= vtophys(mtod(m_new
, caddr_t
));
1069 c
->nge_ctl
= m_new
->m_len
;
1076 nge_alloc_jumbo_mem(struct nge_softc
*sc
)
1080 struct nge_jslot
*entry
;
1082 /* Grab a big chunk o' storage. */
1083 sc
->nge_cdata
.nge_jumbo_buf
= contigmalloc(NGE_JMEM
, M_DEVBUF
,
1084 M_WAITOK
, 0, 0xffffffff, PAGE_SIZE
, 0);
1086 if (sc
->nge_cdata
.nge_jumbo_buf
== NULL
) {
1087 kprintf("nge%d: no memory for jumbo buffers!\n", sc
->nge_unit
);
1091 SLIST_INIT(&sc
->nge_jfree_listhead
);
1094 * Now divide it up into 9K pieces and save the addresses
1097 ptr
= sc
->nge_cdata
.nge_jumbo_buf
;
1098 for (i
= 0; i
< NGE_JSLOTS
; i
++) {
1099 entry
= &sc
->nge_cdata
.nge_jslots
[i
];
1101 entry
->nge_buf
= ptr
;
1102 entry
->nge_inuse
= 0;
1103 entry
->nge_slot
= i
;
1104 SLIST_INSERT_HEAD(&sc
->nge_jfree_listhead
, entry
, jslot_link
);
1113 * Allocate a jumbo buffer.
1115 static struct nge_jslot
*
1116 nge_jalloc(struct nge_softc
*sc
)
1118 struct nge_jslot
*entry
;
1120 lwkt_serialize_enter(&sc
->nge_jslot_serializer
);
1121 entry
= SLIST_FIRST(&sc
->nge_jfree_listhead
);
1123 SLIST_REMOVE_HEAD(&sc
->nge_jfree_listhead
, jslot_link
);
1124 entry
->nge_inuse
= 1;
1127 kprintf("nge%d: no free jumbo buffers\n", sc
->nge_unit
);
1130 lwkt_serialize_exit(&sc
->nge_jslot_serializer
);
1135 * Adjust usage count on a jumbo buffer. In general this doesn't
1136 * get used much because our jumbo buffers don't get passed around
1137 * a lot, but it's implemented for correctness.
1142 struct nge_jslot
*entry
= (struct nge_jslot
*)arg
;
1143 struct nge_softc
*sc
= entry
->nge_sc
;
1146 panic("nge_jref: can't find softc pointer!");
1148 if (&sc
->nge_cdata
.nge_jslots
[entry
->nge_slot
] != entry
)
1149 panic("nge_jref: asked to reference buffer "
1150 "that we don't manage!");
1151 else if (entry
->nge_inuse
== 0)
1152 panic("nge_jref: buffer already free!");
1154 atomic_add_int(&entry
->nge_inuse
, 1);
1158 * Release a jumbo buffer.
1161 nge_jfree(void *arg
)
1163 struct nge_jslot
*entry
= (struct nge_jslot
*)arg
;
1164 struct nge_softc
*sc
= entry
->nge_sc
;
1167 panic("nge_jref: can't find softc pointer!");
1169 if (&sc
->nge_cdata
.nge_jslots
[entry
->nge_slot
] != entry
) {
1170 panic("nge_jref: asked to reference buffer "
1171 "that we don't manage!");
1172 } else if (entry
->nge_inuse
== 0) {
1173 panic("nge_jref: buffer already free!");
1175 lwkt_serialize_enter(&sc
->nge_jslot_serializer
);
1176 atomic_subtract_int(&entry
->nge_inuse
, 1);
1177 if (entry
->nge_inuse
== 0) {
1178 SLIST_INSERT_HEAD(&sc
->nge_jfree_listhead
,
1181 lwkt_serialize_exit(&sc
->nge_jslot_serializer
);
1185 * A frame has been uploaded: pass the resulting mbuf chain up to
1186 * the higher level protocols.
1189 nge_rxeof(struct nge_softc
*sc
)
1192 struct ifnet
*ifp
= &sc
->arpcom
.ac_if
;
1193 struct nge_desc
*cur_rx
;
1194 int i
, total_len
= 0;
1197 i
= sc
->nge_cdata
.nge_rx_prod
;
1199 while(NGE_OWNDESC(&sc
->nge_ldata
->nge_rx_list
[i
])) {
1200 struct mbuf
*m0
= NULL
;
1203 #ifdef DEVICE_POLLING
1204 if (ifp
->if_flags
& IFF_POLLING
) {
1205 if (sc
->rxcycles
<= 0)
1209 #endif /* DEVICE_POLLING */
1211 cur_rx
= &sc
->nge_ldata
->nge_rx_list
[i
];
1212 rxstat
= cur_rx
->nge_rxstat
;
1213 extsts
= cur_rx
->nge_extsts
;
1214 m
= cur_rx
->nge_mbuf
;
1215 cur_rx
->nge_mbuf
= NULL
;
1216 total_len
= NGE_RXBYTES(cur_rx
);
1217 NGE_INC(i
, NGE_RX_LIST_CNT
);
1219 * If an error occurs, update stats, clear the
1220 * status word and leave the mbuf cluster in place:
1221 * it should simply get re-used next time this descriptor
1222 * comes up in the ring.
1224 if ((rxstat
& NGE_CMDSTS_PKT_OK
) == 0) {
1226 nge_newbuf(sc
, cur_rx
, m
);
1231 * Ok. NatSemi really screwed up here. This is the
1232 * only gigE chip I know of with alignment constraints
1233 * on receive buffers. RX buffers must be 64-bit aligned.
1237 * By popular demand, ignore the alignment problems
1238 * on the Intel x86 platform. The performance hit
1239 * incurred due to unaligned accesses is much smaller
1240 * than the hit produced by forcing buffer copies all
1241 * the time, especially with jumbo frames. We still
1242 * need to fix up the alignment everywhere else though.
1244 if (nge_newbuf(sc
, cur_rx
, NULL
) == ENOBUFS
) {
1246 m0
= m_devget(mtod(m
, char *) - ETHER_ALIGN
,
1247 total_len
+ ETHER_ALIGN
, 0, ifp
, NULL
);
1248 nge_newbuf(sc
, cur_rx
, m
);
1250 kprintf("nge%d: no receive buffers "
1251 "available -- packet dropped!\n",
1256 m_adj(m0
, ETHER_ALIGN
);
1260 m
->m_pkthdr
.rcvif
= ifp
;
1261 m
->m_pkthdr
.len
= m
->m_len
= total_len
;
1267 /* Do IP checksum checking. */
1268 if (extsts
& NGE_RXEXTSTS_IPPKT
)
1269 m
->m_pkthdr
.csum_flags
|= CSUM_IP_CHECKED
;
1270 if (!(extsts
& NGE_RXEXTSTS_IPCSUMERR
))
1271 m
->m_pkthdr
.csum_flags
|= CSUM_IP_VALID
;
1272 if ((extsts
& NGE_RXEXTSTS_TCPPKT
&&
1273 (extsts
& NGE_RXEXTSTS_TCPCSUMERR
) == 0) ||
1274 (extsts
& NGE_RXEXTSTS_UDPPKT
&&
1275 (extsts
& NGE_RXEXTSTS_UDPCSUMERR
) == 0)) {
1276 m
->m_pkthdr
.csum_flags
|=
1277 CSUM_DATA_VALID
|CSUM_PSEUDO_HDR
|
1278 CSUM_FRAG_NOT_CHECKED
;
1279 m
->m_pkthdr
.csum_data
= 0xffff;
1283 * If we received a packet with a vlan tag, pass it
1284 * to vlan_input() instead of ether_input().
1286 if (extsts
& NGE_RXEXTSTS_VLANPKT
)
1287 VLAN_INPUT_TAG(m
, extsts
& NGE_RXEXTSTS_VTCI
);
1289 ifp
->if_input(ifp
, m
);
1292 sc
->nge_cdata
.nge_rx_prod
= i
;
1296 * A frame was downloaded to the chip. It's safe for us to clean up
1300 nge_txeof(struct nge_softc
*sc
)
1302 struct ifnet
*ifp
= &sc
->arpcom
.ac_if
;
1303 struct nge_desc
*cur_tx
= NULL
;
1306 /* Clear the timeout timer. */
1310 * Go through our tx list and free mbufs for those
1311 * frames that have been transmitted.
1313 idx
= sc
->nge_cdata
.nge_tx_cons
;
1314 while (idx
!= sc
->nge_cdata
.nge_tx_prod
) {
1315 cur_tx
= &sc
->nge_ldata
->nge_tx_list
[idx
];
1317 if (NGE_OWNDESC(cur_tx
))
1320 if (cur_tx
->nge_ctl
& NGE_CMDSTS_MORE
) {
1321 sc
->nge_cdata
.nge_tx_cnt
--;
1322 NGE_INC(idx
, NGE_TX_LIST_CNT
);
1326 if (!(cur_tx
->nge_ctl
& NGE_CMDSTS_PKT_OK
)) {
1328 if (cur_tx
->nge_txstat
& NGE_TXSTAT_EXCESSCOLLS
)
1329 ifp
->if_collisions
++;
1330 if (cur_tx
->nge_txstat
& NGE_TXSTAT_OUTOFWINCOLL
)
1331 ifp
->if_collisions
++;
1334 ifp
->if_collisions
+=
1335 (cur_tx
->nge_txstat
& NGE_TXSTAT_COLLCNT
) >> 16;
1338 if (cur_tx
->nge_mbuf
!= NULL
) {
1339 m_freem(cur_tx
->nge_mbuf
);
1340 cur_tx
->nge_mbuf
= NULL
;
1343 sc
->nge_cdata
.nge_tx_cnt
--;
1344 NGE_INC(idx
, NGE_TX_LIST_CNT
);
1348 sc
->nge_cdata
.nge_tx_cons
= idx
;
1351 ifp
->if_flags
&= ~IFF_OACTIVE
;
1357 struct nge_softc
*sc
= xsc
;
1358 struct ifnet
*ifp
= &sc
->arpcom
.ac_if
;
1359 struct mii_data
*mii
;
1361 lwkt_serialize_enter(ifp
->if_serializer
);
1364 if (sc
->nge_link
== 0) {
1365 if (CSR_READ_4(sc
, NGE_TBI_BMSR
)
1366 & NGE_TBIBMSR_ANEG_DONE
) {
1367 kprintf("nge%d: gigabit link up\n",
1369 nge_miibus_statchg(sc
->nge_miibus
);
1371 if (!ifq_is_empty(&ifp
->if_snd
))
1376 mii
= device_get_softc(sc
->nge_miibus
);
1379 if (sc
->nge_link
== 0) {
1380 if (mii
->mii_media_status
& IFM_ACTIVE
&&
1381 IFM_SUBTYPE(mii
->mii_media_active
) != IFM_NONE
) {
1383 if (IFM_SUBTYPE(mii
->mii_media_active
)
1385 kprintf("nge%d: gigabit link up\n",
1387 if (!ifq_is_empty(&ifp
->if_snd
))
1392 callout_reset(&sc
->nge_stat_timer
, hz
, nge_tick
, sc
);
1394 lwkt_serialize_exit(ifp
->if_serializer
);
1397 #ifdef DEVICE_POLLING
1400 nge_poll(struct ifnet
*ifp
, enum poll_cmd cmd
, int count
)
1402 struct nge_softc
*sc
= ifp
->if_softc
;
1406 /* disable interrupts */
1407 CSR_WRITE_4(sc
, NGE_IER
, 0);
1409 case POLL_DEREGISTER
:
1410 /* enable interrupts */
1411 CSR_WRITE_4(sc
, NGE_IER
, 1);
1415 * On the nge, reading the status register also clears it.
1416 * So before returning to intr mode we must make sure that all
1417 * possible pending sources of interrupts have been served.
1418 * In practice this means run to completion the *eof routines,
1419 * and then call the interrupt routine
1421 sc
->rxcycles
= count
;
1424 if (!ifq_is_empty(&ifp
->if_snd
))
1427 if (sc
->rxcycles
> 0 || cmd
== POLL_AND_CHECK_STATUS
) {
1430 /* Reading the ISR register clears all interrupts. */
1431 status
= CSR_READ_4(sc
, NGE_ISR
);
1433 if (status
& (NGE_ISR_RX_ERR
|NGE_ISR_RX_OFLOW
))
1436 if (status
& (NGE_ISR_RX_IDLE
))
1437 NGE_SETBIT(sc
, NGE_CSR
, NGE_CSR_RX_ENABLE
);
1439 if (status
& NGE_ISR_SYSERR
) {
1448 #endif /* DEVICE_POLLING */
1453 struct nge_softc
*sc
= arg
;
1454 struct ifnet
*ifp
= &sc
->arpcom
.ac_if
;
1457 /* Supress unwanted interrupts */
1458 if (!(ifp
->if_flags
& IFF_UP
)) {
1463 /* Disable interrupts. */
1464 CSR_WRITE_4(sc
, NGE_IER
, 0);
1466 /* Data LED on for TBI mode */
1468 CSR_WRITE_4(sc
, NGE_GPIO
, CSR_READ_4(sc
, NGE_GPIO
)
1469 | NGE_GPIO_GP3_OUT
);
1472 /* Reading the ISR register clears all interrupts. */
1473 status
= CSR_READ_4(sc
, NGE_ISR
);
1475 if ((status
& NGE_INTRS
) == 0)
1478 if ((status
& NGE_ISR_TX_DESC_OK
) ||
1479 (status
& NGE_ISR_TX_ERR
) ||
1480 (status
& NGE_ISR_TX_OK
) ||
1481 (status
& NGE_ISR_TX_IDLE
))
1484 if ((status
& NGE_ISR_RX_DESC_OK
) ||
1485 (status
& NGE_ISR_RX_ERR
) ||
1486 (status
& NGE_ISR_RX_OFLOW
) ||
1487 (status
& NGE_ISR_RX_FIFO_OFLOW
) ||
1488 (status
& NGE_ISR_RX_IDLE
) ||
1489 (status
& NGE_ISR_RX_OK
))
1492 if ((status
& NGE_ISR_RX_IDLE
))
1493 NGE_SETBIT(sc
, NGE_CSR
, NGE_CSR_RX_ENABLE
);
1495 if (status
& NGE_ISR_SYSERR
) {
1497 ifp
->if_flags
&= ~IFF_RUNNING
;
1502 /* mii_tick should only be called once per second */
1503 if (status
& NGE_ISR_PHY_INTR
) {
1505 nge_tick_serialized(sc
);
1510 /* Re-enable interrupts. */
1511 CSR_WRITE_4(sc
, NGE_IER
, 1);
1513 if (!ifq_is_empty(&ifp
->if_snd
))
1516 /* Data LED off for TBI mode */
1519 CSR_WRITE_4(sc
, NGE_GPIO
, CSR_READ_4(sc
, NGE_GPIO
)
1520 & ~NGE_GPIO_GP3_OUT
);
1524 * Encapsulate an mbuf chain in a descriptor by coupling the mbuf data
1525 * pointers to the fragment pointers.
1528 nge_encap(struct nge_softc
*sc
, struct mbuf
*m_head
, uint32_t *txidx
)
1530 struct nge_desc
*f
= NULL
;
1532 int frag
, cur
, cnt
= 0;
1533 struct ifvlan
*ifv
= NULL
;
1535 if ((m_head
->m_flags
& (M_PROTO1
|M_PKTHDR
)) == (M_PROTO1
|M_PKTHDR
) &&
1536 m_head
->m_pkthdr
.rcvif
!= NULL
&&
1537 m_head
->m_pkthdr
.rcvif
->if_type
== IFT_L2VLAN
)
1538 ifv
= m_head
->m_pkthdr
.rcvif
->if_softc
;
1541 * Start packing the mbufs in this chain into
1542 * the fragment pointers. Stop when we run out
1543 * of fragments or hit the end of the mbuf chain.
1546 cur
= frag
= *txidx
;
1548 for (m
= m_head
; m
!= NULL
; m
= m
->m_next
) {
1549 if (m
->m_len
!= 0) {
1550 if ((NGE_TX_LIST_CNT
-
1551 (sc
->nge_cdata
.nge_tx_cnt
+ cnt
)) < 2)
1553 f
= &sc
->nge_ldata
->nge_tx_list
[frag
];
1554 f
->nge_ctl
= NGE_CMDSTS_MORE
| m
->m_len
;
1555 f
->nge_ptr
= vtophys(mtod(m
, vm_offset_t
));
1557 f
->nge_ctl
|= NGE_CMDSTS_OWN
;
1559 NGE_INC(frag
, NGE_TX_LIST_CNT
);
1567 sc
->nge_ldata
->nge_tx_list
[*txidx
].nge_extsts
= 0;
1568 if (m_head
->m_pkthdr
.csum_flags
) {
1569 if (m_head
->m_pkthdr
.csum_flags
& CSUM_IP
)
1570 sc
->nge_ldata
->nge_tx_list
[*txidx
].nge_extsts
|=
1571 NGE_TXEXTSTS_IPCSUM
;
1572 if (m_head
->m_pkthdr
.csum_flags
& CSUM_TCP
)
1573 sc
->nge_ldata
->nge_tx_list
[*txidx
].nge_extsts
|=
1574 NGE_TXEXTSTS_TCPCSUM
;
1575 if (m_head
->m_pkthdr
.csum_flags
& CSUM_UDP
)
1576 sc
->nge_ldata
->nge_tx_list
[*txidx
].nge_extsts
|=
1577 NGE_TXEXTSTS_UDPCSUM
;
1581 sc
->nge_ldata
->nge_tx_list
[cur
].nge_extsts
|=
1582 (NGE_TXEXTSTS_VLANPKT
|ifv
->ifv_tag
);
1585 sc
->nge_ldata
->nge_tx_list
[cur
].nge_mbuf
= m_head
;
1586 sc
->nge_ldata
->nge_tx_list
[cur
].nge_ctl
&= ~NGE_CMDSTS_MORE
;
1587 sc
->nge_ldata
->nge_tx_list
[*txidx
].nge_ctl
|= NGE_CMDSTS_OWN
;
1588 sc
->nge_cdata
.nge_tx_cnt
+= cnt
;
1595 * Main transmit routine. To avoid having to do mbuf copies, we put pointers
1596 * to the mbuf data regions directly in the transmit lists. We also save a
1597 * copy of the pointers since the transmit list fragment pointers are
1598 * physical addresses.
1602 nge_start(struct ifnet
*ifp
)
1604 struct nge_softc
*sc
= ifp
->if_softc
;
1605 struct mbuf
*m_head
= NULL
;
1612 idx
= sc
->nge_cdata
.nge_tx_prod
;
1614 if (ifp
->if_flags
& IFF_OACTIVE
)
1618 while(sc
->nge_ldata
->nge_tx_list
[idx
].nge_mbuf
== NULL
) {
1619 m_head
= ifq_poll(&ifp
->if_snd
);
1623 if (nge_encap(sc
, m_head
, &idx
)) {
1624 ifp
->if_flags
|= IFF_OACTIVE
;
1627 ifq_dequeue(&ifp
->if_snd
, m_head
);
1630 BPF_MTAP(ifp
, m_head
);
1637 sc
->nge_cdata
.nge_tx_prod
= idx
;
1638 NGE_SETBIT(sc
, NGE_CSR
, NGE_CSR_TX_ENABLE
);
1641 * Set a timeout in case the chip goes out to lunch.
1649 struct nge_softc
*sc
= xsc
;
1650 struct ifnet
*ifp
= &sc
->arpcom
.ac_if
;
1651 struct mii_data
*mii
;
1653 if (ifp
->if_flags
& IFF_RUNNING
) {
1658 * Cancel pending I/O and free all RX/TX buffers.
1661 callout_reset(&sc
->nge_stat_timer
, hz
, nge_tick
, sc
);
1666 mii
= device_get_softc(sc
->nge_miibus
);
1668 /* Set MAC address */
1669 CSR_WRITE_4(sc
, NGE_RXFILT_CTL
, NGE_FILTADDR_PAR0
);
1670 CSR_WRITE_4(sc
, NGE_RXFILT_DATA
,
1671 ((uint16_t *)sc
->arpcom
.ac_enaddr
)[0]);
1672 CSR_WRITE_4(sc
, NGE_RXFILT_CTL
, NGE_FILTADDR_PAR1
);
1673 CSR_WRITE_4(sc
, NGE_RXFILT_DATA
,
1674 ((uint16_t *)sc
->arpcom
.ac_enaddr
)[1]);
1675 CSR_WRITE_4(sc
, NGE_RXFILT_CTL
, NGE_FILTADDR_PAR2
);
1676 CSR_WRITE_4(sc
, NGE_RXFILT_DATA
,
1677 ((uint16_t *)sc
->arpcom
.ac_enaddr
)[2]);
1679 /* Init circular RX list. */
1680 if (nge_list_rx_init(sc
) == ENOBUFS
) {
1681 kprintf("nge%d: initialization failed: no "
1682 "memory for rx buffers\n", sc
->nge_unit
);
1688 * Init tx descriptors.
1690 nge_list_tx_init(sc
);
1693 * For the NatSemi chip, we have to explicitly enable the
1694 * reception of ARP frames, as well as turn on the 'perfect
1695 * match' filter where we store the station address, otherwise
1696 * we won't receive unicasts meant for this host.
1698 NGE_SETBIT(sc
, NGE_RXFILT_CTL
, NGE_RXFILTCTL_ARP
);
1699 NGE_SETBIT(sc
, NGE_RXFILT_CTL
, NGE_RXFILTCTL_PERFECT
);
1701 /* If we want promiscuous mode, set the allframes bit. */
1702 if (ifp
->if_flags
& IFF_PROMISC
)
1703 NGE_SETBIT(sc
, NGE_RXFILT_CTL
, NGE_RXFILTCTL_ALLPHYS
);
1705 NGE_CLRBIT(sc
, NGE_RXFILT_CTL
, NGE_RXFILTCTL_ALLPHYS
);
1708 * Set the capture broadcast bit to capture broadcast frames.
1710 if (ifp
->if_flags
& IFF_BROADCAST
)
1711 NGE_SETBIT(sc
, NGE_RXFILT_CTL
, NGE_RXFILTCTL_BROAD
);
1713 NGE_CLRBIT(sc
, NGE_RXFILT_CTL
, NGE_RXFILTCTL_BROAD
);
1716 * Load the multicast filter.
1720 /* Turn the receive filter on */
1721 NGE_SETBIT(sc
, NGE_RXFILT_CTL
, NGE_RXFILTCTL_ENABLE
);
1724 * Load the address of the RX and TX lists.
1726 CSR_WRITE_4(sc
, NGE_RX_LISTPTR
,
1727 vtophys(&sc
->nge_ldata
->nge_rx_list
[0]));
1728 CSR_WRITE_4(sc
, NGE_TX_LISTPTR
,
1729 vtophys(&sc
->nge_ldata
->nge_tx_list
[0]));
1731 /* Set RX configuration */
1732 CSR_WRITE_4(sc
, NGE_RX_CFG
, NGE_RXCFG
);
1734 * Enable hardware checksum validation for all IPv4
1735 * packets, do not reject packets with bad checksums.
1737 CSR_WRITE_4(sc
, NGE_VLAN_IP_RXCTL
, NGE_VIPRXCTL_IPCSUM_ENB
);
1740 * Tell the chip to detect and strip VLAN tag info from
1741 * received frames. The tag will be provided in the extsts
1742 * field in the RX descriptors.
1744 NGE_SETBIT(sc
, NGE_VLAN_IP_RXCTL
,
1745 NGE_VIPRXCTL_TAG_DETECT_ENB
|NGE_VIPRXCTL_TAG_STRIP_ENB
);
1747 /* Set TX configuration */
1748 CSR_WRITE_4(sc
, NGE_TX_CFG
, NGE_TXCFG
);
1751 * Enable TX IPv4 checksumming on a per-packet basis.
1753 CSR_WRITE_4(sc
, NGE_VLAN_IP_TXCTL
, NGE_VIPTXCTL_CSUM_PER_PKT
);
1756 * Tell the chip to insert VLAN tags on a per-packet basis as
1757 * dictated by the code in the frame encapsulation routine.
1759 NGE_SETBIT(sc
, NGE_VLAN_IP_TXCTL
, NGE_VIPTXCTL_TAG_PER_PKT
);
1761 /* Set full/half duplex mode. */
1763 if ((sc
->nge_ifmedia
.ifm_cur
->ifm_media
& IFM_GMASK
)
1765 NGE_SETBIT(sc
, NGE_TX_CFG
,
1766 (NGE_TXCFG_IGN_HBEAT
| NGE_TXCFG_IGN_CARR
));
1767 NGE_SETBIT(sc
, NGE_RX_CFG
, NGE_RXCFG_RX_FDX
);
1769 NGE_CLRBIT(sc
, NGE_TX_CFG
,
1770 (NGE_TXCFG_IGN_HBEAT
| NGE_TXCFG_IGN_CARR
));
1771 NGE_CLRBIT(sc
, NGE_RX_CFG
, NGE_RXCFG_RX_FDX
);
1774 if ((mii
->mii_media_active
& IFM_GMASK
) == IFM_FDX
) {
1775 NGE_SETBIT(sc
, NGE_TX_CFG
,
1776 (NGE_TXCFG_IGN_HBEAT
| NGE_TXCFG_IGN_CARR
));
1777 NGE_SETBIT(sc
, NGE_RX_CFG
, NGE_RXCFG_RX_FDX
);
1779 NGE_CLRBIT(sc
, NGE_TX_CFG
,
1780 (NGE_TXCFG_IGN_HBEAT
| NGE_TXCFG_IGN_CARR
));
1781 NGE_CLRBIT(sc
, NGE_RX_CFG
, NGE_RXCFG_RX_FDX
);
1786 * Enable the delivery of PHY interrupts based on
1787 * link/speed/duplex status changes. Also enable the
1788 * extsts field in the DMA descriptors (needed for
1789 * TCP/IP checksum offload on transmit).
1791 NGE_SETBIT(sc
, NGE_CFG
, NGE_CFG_PHYINTR_SPD
|
1792 NGE_CFG_PHYINTR_LNK
| NGE_CFG_PHYINTR_DUP
| NGE_CFG_EXTSTS_ENB
);
1795 * Configure interrupt holdoff (moderation). We can
1796 * have the chip delay interrupt delivery for a certain
1797 * period. Units are in 100us, and the max setting
1798 * is 25500us (0xFF x 100us). Default is a 100us holdoff.
1800 CSR_WRITE_4(sc
, NGE_IHR
, 0x01);
1803 * Enable interrupts.
1805 CSR_WRITE_4(sc
, NGE_IMR
, NGE_INTRS
);
1806 #ifdef DEVICE_POLLING
1808 * ... only enable interrupts if we are not polling, make sure
1809 * they are off otherwise.
1811 if (ifp
->if_flags
& IFF_POLLING
)
1812 CSR_WRITE_4(sc
, NGE_IER
, 0);
1814 #endif /* DEVICE_POLLING */
1815 CSR_WRITE_4(sc
, NGE_IER
, 1);
1817 /* Enable receiver and transmitter. */
1818 NGE_CLRBIT(sc
, NGE_CSR
, NGE_CSR_TX_DISABLE
| NGE_CSR_RX_DISABLE
);
1819 NGE_SETBIT(sc
, NGE_CSR
, NGE_CSR_RX_ENABLE
);
1821 nge_ifmedia_upd(ifp
);
1823 ifp
->if_flags
|= IFF_RUNNING
;
1824 ifp
->if_flags
&= ~IFF_OACTIVE
;
1828 * Set media options.
1831 nge_ifmedia_upd(struct ifnet
*ifp
)
1833 struct nge_softc
*sc
= ifp
->if_softc
;
1834 struct mii_data
*mii
;
1837 if (IFM_SUBTYPE(sc
->nge_ifmedia
.ifm_cur
->ifm_media
)
1839 CSR_WRITE_4(sc
, NGE_TBI_ANAR
,
1840 CSR_READ_4(sc
, NGE_TBI_ANAR
)
1841 | NGE_TBIANAR_HDX
| NGE_TBIANAR_FDX
1842 | NGE_TBIANAR_PS1
| NGE_TBIANAR_PS2
);
1843 CSR_WRITE_4(sc
, NGE_TBI_BMCR
, NGE_TBIBMCR_ENABLE_ANEG
1844 | NGE_TBIBMCR_RESTART_ANEG
);
1845 CSR_WRITE_4(sc
, NGE_TBI_BMCR
, NGE_TBIBMCR_ENABLE_ANEG
);
1846 } else if ((sc
->nge_ifmedia
.ifm_cur
->ifm_media
1847 & IFM_GMASK
) == IFM_FDX
) {
1848 NGE_SETBIT(sc
, NGE_TX_CFG
,
1849 (NGE_TXCFG_IGN_HBEAT
|NGE_TXCFG_IGN_CARR
));
1850 NGE_SETBIT(sc
, NGE_RX_CFG
, NGE_RXCFG_RX_FDX
);
1852 CSR_WRITE_4(sc
, NGE_TBI_ANAR
, 0);
1853 CSR_WRITE_4(sc
, NGE_TBI_BMCR
, 0);
1855 NGE_CLRBIT(sc
, NGE_TX_CFG
,
1856 (NGE_TXCFG_IGN_HBEAT
|NGE_TXCFG_IGN_CARR
));
1857 NGE_CLRBIT(sc
, NGE_RX_CFG
, NGE_RXCFG_RX_FDX
);
1859 CSR_WRITE_4(sc
, NGE_TBI_ANAR
, 0);
1860 CSR_WRITE_4(sc
, NGE_TBI_BMCR
, 0);
1863 CSR_WRITE_4(sc
, NGE_GPIO
, CSR_READ_4(sc
, NGE_GPIO
)
1864 & ~NGE_GPIO_GP3_OUT
);
1866 mii
= device_get_softc(sc
->nge_miibus
);
1868 if (mii
->mii_instance
) {
1869 struct mii_softc
*miisc
;
1870 for (miisc
= LIST_FIRST(&mii
->mii_phys
); miisc
!= NULL
;
1871 miisc
= LIST_NEXT(miisc
, mii_list
))
1872 mii_phy_reset(miisc
);
1881 * Report current media status.
1884 nge_ifmedia_sts(struct ifnet
*ifp
, struct ifmediareq
*ifmr
)
1886 struct nge_softc
*sc
= ifp
->if_softc
;
1887 struct mii_data
*mii
;
1890 ifmr
->ifm_status
= IFM_AVALID
;
1891 ifmr
->ifm_active
= IFM_ETHER
;
1893 if (CSR_READ_4(sc
, NGE_TBI_BMSR
) & NGE_TBIBMSR_ANEG_DONE
)
1894 ifmr
->ifm_status
|= IFM_ACTIVE
;
1895 if (CSR_READ_4(sc
, NGE_TBI_BMCR
) & NGE_TBIBMCR_LOOPBACK
)
1896 ifmr
->ifm_active
|= IFM_LOOP
;
1897 if (!CSR_READ_4(sc
, NGE_TBI_BMSR
) & NGE_TBIBMSR_ANEG_DONE
) {
1898 ifmr
->ifm_active
|= IFM_NONE
;
1899 ifmr
->ifm_status
= 0;
1902 ifmr
->ifm_active
|= IFM_1000_SX
;
1903 if (IFM_SUBTYPE(sc
->nge_ifmedia
.ifm_cur
->ifm_media
)
1905 ifmr
->ifm_active
|= IFM_AUTO
;
1906 if (CSR_READ_4(sc
, NGE_TBI_ANLPAR
)
1907 & NGE_TBIANAR_FDX
) {
1908 ifmr
->ifm_active
|= IFM_FDX
;
1909 }else if (CSR_READ_4(sc
, NGE_TBI_ANLPAR
)
1910 & NGE_TBIANAR_HDX
) {
1911 ifmr
->ifm_active
|= IFM_HDX
;
1913 } else if ((sc
->nge_ifmedia
.ifm_cur
->ifm_media
& IFM_GMASK
)
1915 ifmr
->ifm_active
|= IFM_FDX
;
1917 ifmr
->ifm_active
|= IFM_HDX
;
1920 mii
= device_get_softc(sc
->nge_miibus
);
1922 ifmr
->ifm_active
= mii
->mii_media_active
;
1923 ifmr
->ifm_status
= mii
->mii_media_status
;
1928 nge_ioctl(struct ifnet
*ifp
, u_long command
, caddr_t data
, struct ucred
*cr
)
1930 struct nge_softc
*sc
= ifp
->if_softc
;
1931 struct ifreq
*ifr
= (struct ifreq
*) data
;
1932 struct mii_data
*mii
;
1937 if (ifr
->ifr_mtu
> NGE_JUMBO_MTU
) {
1940 ifp
->if_mtu
= ifr
->ifr_mtu
;
1942 * Workaround: if the MTU is larger than
1943 * 8152 (TX FIFO size minus 64 minus 18), turn off
1944 * TX checksum offloading.
1946 if (ifr
->ifr_mtu
>= 8152)
1947 ifp
->if_hwassist
= 0;
1949 ifp
->if_hwassist
= NGE_CSUM_FEATURES
;
1953 if (ifp
->if_flags
& IFF_UP
) {
1954 if (ifp
->if_flags
& IFF_RUNNING
&&
1955 ifp
->if_flags
& IFF_PROMISC
&&
1956 !(sc
->nge_if_flags
& IFF_PROMISC
)) {
1957 NGE_SETBIT(sc
, NGE_RXFILT_CTL
,
1958 NGE_RXFILTCTL_ALLPHYS
|
1959 NGE_RXFILTCTL_ALLMULTI
);
1960 } else if (ifp
->if_flags
& IFF_RUNNING
&&
1961 !(ifp
->if_flags
& IFF_PROMISC
) &&
1962 sc
->nge_if_flags
& IFF_PROMISC
) {
1963 NGE_CLRBIT(sc
, NGE_RXFILT_CTL
,
1964 NGE_RXFILTCTL_ALLPHYS
);
1965 if (!(ifp
->if_flags
& IFF_ALLMULTI
))
1966 NGE_CLRBIT(sc
, NGE_RXFILT_CTL
,
1967 NGE_RXFILTCTL_ALLMULTI
);
1969 ifp
->if_flags
&= ~IFF_RUNNING
;
1973 if (ifp
->if_flags
& IFF_RUNNING
)
1976 sc
->nge_if_flags
= ifp
->if_flags
;
1987 error
= ifmedia_ioctl(ifp
, ifr
, &sc
->nge_ifmedia
,
1990 mii
= device_get_softc(sc
->nge_miibus
);
1991 error
= ifmedia_ioctl(ifp
, ifr
, &mii
->mii_media
,
1996 error
= ether_ioctl(ifp
, command
, data
);
2003 nge_watchdog(struct ifnet
*ifp
)
2005 struct nge_softc
*sc
= ifp
->if_softc
;
2008 kprintf("nge%d: watchdog timeout\n", sc
->nge_unit
);
2012 ifp
->if_flags
&= ~IFF_RUNNING
;
2015 if (!ifq_is_empty(&ifp
->if_snd
))
2020 * Stop the adapter and free any mbufs allocated to the
2024 nge_stop(struct nge_softc
*sc
)
2026 struct ifnet
*ifp
= &sc
->arpcom
.ac_if
;
2027 struct ifmedia_entry
*ifm
;
2028 struct mii_data
*mii
;
2029 int i
, itmp
, mtmp
, dtmp
;
2035 mii
= device_get_softc(sc
->nge_miibus
);
2037 callout_stop(&sc
->nge_stat_timer
);
2038 CSR_WRITE_4(sc
, NGE_IER
, 0);
2039 CSR_WRITE_4(sc
, NGE_IMR
, 0);
2040 NGE_SETBIT(sc
, NGE_CSR
, NGE_CSR_TX_DISABLE
|NGE_CSR_RX_DISABLE
);
2042 CSR_WRITE_4(sc
, NGE_TX_LISTPTR
, 0);
2043 CSR_WRITE_4(sc
, NGE_RX_LISTPTR
, 0);
2046 * Isolate/power down the PHY, but leave the media selection
2047 * unchanged so that things will be put back to normal when
2048 * we bring the interface back up.
2050 itmp
= ifp
->if_flags
;
2051 ifp
->if_flags
|= IFF_UP
;
2054 ifm
= sc
->nge_ifmedia
.ifm_cur
;
2056 ifm
= mii
->mii_media
.ifm_cur
;
2058 mtmp
= ifm
->ifm_media
;
2059 dtmp
= ifm
->ifm_data
;
2060 ifm
->ifm_media
= IFM_ETHER
|IFM_NONE
;
2061 ifm
->ifm_data
= MII_MEDIA_NONE
;
2065 ifm
->ifm_media
= mtmp
;
2066 ifm
->ifm_data
= dtmp
;
2067 ifp
->if_flags
= itmp
;
2072 * Free data in the RX lists.
2074 for (i
= 0; i
< NGE_RX_LIST_CNT
; i
++) {
2075 if (sc
->nge_ldata
->nge_rx_list
[i
].nge_mbuf
!= NULL
) {
2076 m_freem(sc
->nge_ldata
->nge_rx_list
[i
].nge_mbuf
);
2077 sc
->nge_ldata
->nge_rx_list
[i
].nge_mbuf
= NULL
;
2080 bzero(&sc
->nge_ldata
->nge_rx_list
,
2081 sizeof(sc
->nge_ldata
->nge_rx_list
));
2084 * Free the TX list buffers.
2086 for (i
= 0; i
< NGE_TX_LIST_CNT
; i
++) {
2087 if (sc
->nge_ldata
->nge_tx_list
[i
].nge_mbuf
!= NULL
) {
2088 m_freem(sc
->nge_ldata
->nge_tx_list
[i
].nge_mbuf
);
2089 sc
->nge_ldata
->nge_tx_list
[i
].nge_mbuf
= NULL
;
2093 bzero(&sc
->nge_ldata
->nge_tx_list
,
2094 sizeof(sc
->nge_ldata
->nge_tx_list
));
2096 ifp
->if_flags
&= ~(IFF_RUNNING
| IFF_OACTIVE
);
2100 * Stop all chip I/O so that the kernel's probe routines don't
2101 * get confused by errant DMAs when rebooting.
2104 nge_shutdown(device_t dev
)
2106 struct nge_softc
*sc
= device_get_softc(dev
);
2107 struct ifnet
*ifp
= &sc
->arpcom
.ac_if
;
2109 lwkt_serialize_enter(ifp
->if_serializer
);
2112 lwkt_serialize_exit(ifp
->if_serializer
);