3 * Bill Paul <wpaul@windriver.com>. 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/dev/vge/if_vge.c,v 1.24 2006/02/14 12:44:56 glebius Exp $
33 * $DragonFly: src/sys/dev/netif/vge/if_vge.c,v 1.8 2008/05/14 11:59:22 sephe Exp $
37 * VIA Networking Technologies VT612x PCI gigabit ethernet NIC driver.
39 * Written by Bill Paul <wpaul@windriver.com>
40 * Senior Networking Software Engineer
45 * The VIA Networking VT6122 is a 32bit, 33/66Mhz PCI device that
46 * combines a tri-speed ethernet MAC and PHY, with the following
49 * o Jumbo frame support up to 16K
50 * o Transmit and receive flow control
51 * o IPv4 checksum offload
52 * o VLAN tag insertion and stripping
54 * o 64-bit multicast hash table filter
55 * o 64 entry CAM filter
56 * o 16K RX FIFO and 48K TX FIFO memory
57 * o Interrupt moderation
59 * The VT6122 supports up to four transmit DMA queues. The descriptors
60 * in the transmit ring can address up to 7 data fragments; frames which
61 * span more than 7 data buffers must be coalesced, but in general the
62 * BSD TCP/IP stack rarely generates frames more than 2 or 3 fragments
63 * long. The receive descriptors address only a single buffer.
65 * There are two peculiar design issues with the VT6122. One is that
66 * receive data buffers must be aligned on a 32-bit boundary. This is
67 * not a problem where the VT6122 is used as a LOM device in x86-based
68 * systems, but on architectures that generate unaligned access traps, we
69 * have to do some copying.
71 * The other issue has to do with the way 64-bit addresses are handled.
72 * The DMA descriptors only allow you to specify 48 bits of addressing
73 * information. The remaining 16 bits are specified using one of the
74 * I/O registers. If you only have a 32-bit system, then this isn't
75 * an issue, but if you have a 64-bit system and more than 4GB of
76 * memory, you must have to make sure your network data buffers reside
77 * in the same 48-bit 'segment.'
79 * Special thanks to Ryan Fu at VIA Networking for providing documentation
80 * and sample NICs for testing.
83 #include "opt_polling.h"
85 #include <sys/param.h>
86 #include <sys/endian.h>
87 #include <sys/systm.h>
88 #include <sys/sockio.h>
90 #include <sys/malloc.h>
91 #include <sys/module.h>
92 #include <sys/kernel.h>
93 #include <sys/socket.h>
94 #include <sys/serialize.h>
98 #include <sys/interrupt.h>
101 #include <net/if_arp.h>
102 #include <net/ethernet.h>
103 #include <net/if_dl.h>
104 #include <net/if_media.h>
105 #include <net/ifq_var.h>
106 #include <net/if_types.h>
107 #include <net/vlan/if_vlan_var.h>
108 #include <net/vlan/if_vlan_ether.h>
112 #include <dev/netif/mii_layer/mii.h>
113 #include <dev/netif/mii_layer/miivar.h>
115 #include <bus/pci/pcireg.h>
116 #include <bus/pci/pcivar.h>
117 #include <bus/pci/pcidevs.h>
119 #include "miibus_if.h"
121 #include <dev/netif/vge/if_vgereg.h>
122 #include <dev/netif/vge/if_vgevar.h>
124 #define VGE_CSUM_FEATURES (CSUM_IP | CSUM_TCP | CSUM_UDP)
127 * Various supported device vendors/types and their names.
129 static const struct vge_type vge_devs[] = {
130 { PCI_VENDOR_VIATECH, PCI_PRODUCT_VIATECH_VT612X,
131 "VIA Networking Gigabit Ethernet" },
135 static int vge_probe (device_t);
136 static int vge_attach (device_t);
137 static int vge_detach (device_t);
139 static int vge_encap (struct vge_softc *, struct mbuf *, int);
141 static void vge_dma_map_addr (void *, bus_dma_segment_t *, int, int);
142 static void vge_dma_map_rx_desc (void *, bus_dma_segment_t *, int,
144 static void vge_dma_map_tx_desc (void *, bus_dma_segment_t *, int,
146 static int vge_dma_alloc (device_t);
147 static void vge_dma_free (struct vge_softc *);
148 static int vge_newbuf (struct vge_softc *, int, struct mbuf *);
149 static int vge_rx_list_init (struct vge_softc *);
150 static int vge_tx_list_init (struct vge_softc *);
152 static __inline void vge_fixup_rx
155 static void vge_rxeof (struct vge_softc *, int);
156 static void vge_txeof (struct vge_softc *);
157 static void vge_intr (void *);
158 static void vge_tick (struct vge_softc *);
159 static void vge_start (struct ifnet *);
160 static int vge_ioctl (struct ifnet *, u_long, caddr_t,
162 static void vge_init (void *);
163 static void vge_stop (struct vge_softc *);
164 static void vge_watchdog (struct ifnet *);
165 static int vge_suspend (device_t);
166 static int vge_resume (device_t);
167 static void vge_shutdown (device_t);
168 static int vge_ifmedia_upd (struct ifnet *);
169 static void vge_ifmedia_sts (struct ifnet *, struct ifmediareq *);
172 static void vge_eeprom_getword (struct vge_softc *, int, u_int16_t *);
174 static void vge_read_eeprom (struct vge_softc *, uint8_t *, int, int, int);
176 static void vge_miipoll_start (struct vge_softc *);
177 static void vge_miipoll_stop (struct vge_softc *);
178 static int vge_miibus_readreg (device_t, int, int);
179 static int vge_miibus_writereg (device_t, int, int, int);
180 static void vge_miibus_statchg (device_t);
182 static void vge_cam_clear (struct vge_softc *);
183 static int vge_cam_set (struct vge_softc *, uint8_t *);
184 static void vge_setmulti (struct vge_softc *);
185 static void vge_reset (struct vge_softc *);
187 #ifdef DEVICE_POLLING
188 static void vge_poll(struct ifnet *, enum poll_cmd, int);
189 static void vge_disable_intr(struct vge_softc *);
191 static void vge_enable_intr(struct vge_softc *, uint32_t);
193 #define VGE_PCI_LOIO 0x10
194 #define VGE_PCI_LOMEM 0x14
196 static device_method_t vge_methods[] = {
197 /* Device interface */
198 DEVMETHOD(device_probe, vge_probe),
199 DEVMETHOD(device_attach, vge_attach),
200 DEVMETHOD(device_detach, vge_detach),
201 DEVMETHOD(device_suspend, vge_suspend),
202 DEVMETHOD(device_resume, vge_resume),
203 DEVMETHOD(device_shutdown, vge_shutdown),
206 DEVMETHOD(bus_print_child, bus_generic_print_child),
207 DEVMETHOD(bus_driver_added, bus_generic_driver_added),
210 DEVMETHOD(miibus_readreg, vge_miibus_readreg),
211 DEVMETHOD(miibus_writereg, vge_miibus_writereg),
212 DEVMETHOD(miibus_statchg, vge_miibus_statchg),
217 static driver_t vge_driver = {
220 sizeof(struct vge_softc)
223 static devclass_t vge_devclass;
225 DECLARE_DUMMY_MODULE(if_vge);
226 MODULE_DEPEND(if_vge, miibus, 1, 1, 1);
227 DRIVER_MODULE(if_vge, pci, vge_driver, vge_devclass, 0, 0);
228 DRIVER_MODULE(if_vge, cardbus, vge_driver, vge_devclass, 0, 0);
229 DRIVER_MODULE(miibus, vge, miibus_driver, miibus_devclass, 0, 0);
233 * Read a word of data stored in the EEPROM at address 'addr.'
236 vge_eeprom_getword(struct vge_softc *sc, int addr, uint16_t dest)
242 * Enter EEPROM embedded programming mode. In order to
243 * access the EEPROM at all, we first have to set the
244 * EELOAD bit in the CHIPCFG2 register.
246 CSR_SETBIT_1(sc, VGE_CHIPCFG2, VGE_CHIPCFG2_EELOAD);
247 CSR_SETBIT_1(sc, VGE_EECSR, VGE_EECSR_EMBP/*|VGE_EECSR_ECS*/);
249 /* Select the address of the word we want to read */
250 CSR_WRITE_1(sc, VGE_EEADDR, addr);
252 /* Issue read command */
253 CSR_SETBIT_1(sc, VGE_EECMD, VGE_EECMD_ERD);
255 /* Wait for the done bit to be set. */
256 for (i = 0; i < VGE_TIMEOUT; i++) {
257 if (CSR_READ_1(sc, VGE_EECMD) & VGE_EECMD_EDONE)
260 if (i == VGE_TIMEOUT) {
261 device_printf(sc->vge_dev, "EEPROM read timed out\n");
266 /* Read the result */
267 word = CSR_READ_2(sc, VGE_EERDDAT);
269 /* Turn off EEPROM access mode. */
270 CSR_CLRBIT_1(sc, VGE_EECSR, VGE_EECSR_EMBP/*|VGE_EECSR_ECS*/);
271 CSR_CLRBIT_1(sc, VGE_CHIPCFG2, VGE_CHIPCFG2_EELOAD);
278 * Read a sequence of words from the EEPROM.
281 vge_read_eeprom(struct vge_softc *sc, uint8_t *dest, int off, int cnt, int swap)
285 uint16_t word = 0, *ptr;
287 for (i = 0; i < cnt; i++) {
288 vge_eeprom_getword(sc, off + i, &word);
289 ptr = (uint16_t *)(dest + (i * 2));
296 for (i = 0; i < ETHER_ADDR_LEN; i++)
297 dest[i] = CSR_READ_1(sc, VGE_PAR0 + i);
302 vge_miipoll_stop(struct vge_softc *sc)
306 CSR_WRITE_1(sc, VGE_MIICMD, 0);
308 for (i = 0; i < VGE_TIMEOUT; i++) {
310 if (CSR_READ_1(sc, VGE_MIISTS) & VGE_MIISTS_IIDL)
313 if (i == VGE_TIMEOUT)
314 if_printf(&sc->arpcom.ac_if, "failed to idle MII autopoll\n");
318 vge_miipoll_start(struct vge_softc *sc)
322 /* First, make sure we're idle. */
323 CSR_WRITE_1(sc, VGE_MIICMD, 0);
324 CSR_WRITE_1(sc, VGE_MIIADDR, VGE_MIIADDR_SWMPL);
326 for (i = 0; i < VGE_TIMEOUT; i++) {
328 if (CSR_READ_1(sc, VGE_MIISTS) & VGE_MIISTS_IIDL)
331 if (i == VGE_TIMEOUT) {
332 if_printf(&sc->arpcom.ac_if, "failed to idle MII autopoll\n");
336 /* Now enable auto poll mode. */
337 CSR_WRITE_1(sc, VGE_MIICMD, VGE_MIICMD_MAUTO);
339 /* And make sure it started. */
340 for (i = 0; i < VGE_TIMEOUT; i++) {
342 if ((CSR_READ_1(sc, VGE_MIISTS) & VGE_MIISTS_IIDL) == 0)
345 if (i == VGE_TIMEOUT)
346 if_printf(&sc->arpcom.ac_if, "failed to start MII autopoll\n");
350 vge_miibus_readreg(device_t dev, int phy, int reg)
352 struct vge_softc *sc;
356 sc = device_get_softc(dev);
358 if (phy != (CSR_READ_1(sc, VGE_MIICFG) & 0x1F))
361 vge_miipoll_stop(sc);
363 /* Specify the register we want to read. */
364 CSR_WRITE_1(sc, VGE_MIIADDR, reg);
366 /* Issue read command. */
367 CSR_SETBIT_1(sc, VGE_MIICMD, VGE_MIICMD_RCMD);
369 /* Wait for the read command bit to self-clear. */
370 for (i = 0; i < VGE_TIMEOUT; i++) {
372 if ((CSR_READ_1(sc, VGE_MIICMD) & VGE_MIICMD_RCMD) == 0)
375 if (i == VGE_TIMEOUT)
376 if_printf(&sc->arpcom.ac_if, "MII read timed out\n");
378 rval = CSR_READ_2(sc, VGE_MIIDATA);
380 vge_miipoll_start(sc);
386 vge_miibus_writereg(device_t dev, int phy, int reg, int data)
388 struct vge_softc *sc;
391 sc = device_get_softc(dev);
393 if (phy != (CSR_READ_1(sc, VGE_MIICFG) & 0x1F))
396 vge_miipoll_stop(sc);
398 /* Specify the register we want to write. */
399 CSR_WRITE_1(sc, VGE_MIIADDR, reg);
401 /* Specify the data we want to write. */
402 CSR_WRITE_2(sc, VGE_MIIDATA, data);
404 /* Issue write command. */
405 CSR_SETBIT_1(sc, VGE_MIICMD, VGE_MIICMD_WCMD);
407 /* Wait for the write command bit to self-clear. */
408 for (i = 0; i < VGE_TIMEOUT; i++) {
410 if ((CSR_READ_1(sc, VGE_MIICMD) & VGE_MIICMD_WCMD) == 0)
413 if (i == VGE_TIMEOUT) {
414 if_printf(&sc->arpcom.ac_if, "MII write timed out\n");
418 vge_miipoll_start(sc);
424 vge_cam_clear(struct vge_softc *sc)
429 * Turn off all the mask bits. This tells the chip
430 * that none of the entries in the CAM filter are valid.
431 * desired entries will be enabled as we fill the filter in.
433 CSR_CLRBIT_1(sc, VGE_CAMCTL, VGE_CAMCTL_PAGESEL);
434 CSR_SETBIT_1(sc, VGE_CAMCTL, VGE_PAGESEL_CAMMASK);
435 CSR_WRITE_1(sc, VGE_CAMADDR, VGE_CAMADDR_ENABLE);
436 for (i = 0; i < 8; i++)
437 CSR_WRITE_1(sc, VGE_CAM0 + i, 0);
439 /* Clear the VLAN filter too. */
440 CSR_WRITE_1(sc, VGE_CAMADDR, VGE_CAMADDR_ENABLE|VGE_CAMADDR_AVSEL|0);
441 for (i = 0; i < 8; i++)
442 CSR_WRITE_1(sc, VGE_CAM0 + i, 0);
444 CSR_WRITE_1(sc, VGE_CAMADDR, 0);
445 CSR_CLRBIT_1(sc, VGE_CAMCTL, VGE_CAMCTL_PAGESEL);
446 CSR_SETBIT_1(sc, VGE_CAMCTL, VGE_PAGESEL_MAR);
452 vge_cam_set(struct vge_softc *sc, uint8_t *addr)
456 if (sc->vge_camidx == VGE_CAM_MAXADDRS)
459 /* Select the CAM data page. */
460 CSR_CLRBIT_1(sc, VGE_CAMCTL, VGE_CAMCTL_PAGESEL);
461 CSR_SETBIT_1(sc, VGE_CAMCTL, VGE_PAGESEL_CAMDATA);
463 /* Set the filter entry we want to update and enable writing. */
464 CSR_WRITE_1(sc, VGE_CAMADDR, VGE_CAMADDR_ENABLE|sc->vge_camidx);
466 /* Write the address to the CAM registers */
467 for (i = 0; i < ETHER_ADDR_LEN; i++)
468 CSR_WRITE_1(sc, VGE_CAM0 + i, addr[i]);
470 /* Issue a write command. */
471 CSR_SETBIT_1(sc, VGE_CAMCTL, VGE_CAMCTL_WRITE);
473 /* Wake for it to clear. */
474 for (i = 0; i < VGE_TIMEOUT; i++) {
476 if ((CSR_READ_1(sc, VGE_CAMCTL) & VGE_CAMCTL_WRITE) == 0)
479 if (i == VGE_TIMEOUT) {
480 if_printf(&sc->arpcom.ac_if, "setting CAM filter failed\n");
485 /* Select the CAM mask page. */
486 CSR_CLRBIT_1(sc, VGE_CAMCTL, VGE_CAMCTL_PAGESEL);
487 CSR_SETBIT_1(sc, VGE_CAMCTL, VGE_PAGESEL_CAMMASK);
489 /* Set the mask bit that enables this filter. */
490 CSR_SETBIT_1(sc, VGE_CAM0 + (sc->vge_camidx/8),
491 1<<(sc->vge_camidx & 7));
496 /* Turn off access to CAM. */
497 CSR_WRITE_1(sc, VGE_CAMADDR, 0);
498 CSR_CLRBIT_1(sc, VGE_CAMCTL, VGE_CAMCTL_PAGESEL);
499 CSR_SETBIT_1(sc, VGE_CAMCTL, VGE_PAGESEL_MAR);
505 * Program the multicast filter. We use the 64-entry CAM filter
506 * for perfect filtering. If there's more than 64 multicast addresses,
507 * we use the hash filter insted.
510 vge_setmulti(struct vge_softc *sc)
512 struct ifnet *ifp = &sc->arpcom.ac_if;
514 struct ifmultiaddr *ifma;
515 uint32_t h, hashes[2] = { 0, 0 };
517 /* First, zot all the multicast entries. */
519 CSR_WRITE_4(sc, VGE_MAR0, 0);
520 CSR_WRITE_4(sc, VGE_MAR1, 0);
523 * If the user wants allmulti or promisc mode, enable reception
524 * of all multicast frames.
526 if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
527 CSR_WRITE_4(sc, VGE_MAR0, 0xFFFFFFFF);
528 CSR_WRITE_4(sc, VGE_MAR1, 0xFFFFFFFF);
532 /* Now program new ones */
533 LIST_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
534 if (ifma->ifma_addr->sa_family != AF_LINK)
536 error = vge_cam_set(sc,
537 LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
542 /* If there were too many addresses, use the hash filter. */
546 LIST_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
547 if (ifma->ifma_addr->sa_family != AF_LINK)
549 h = ether_crc32_be(LLADDR((struct sockaddr_dl *)
550 ifma->ifma_addr), ETHER_ADDR_LEN) >> 26;
552 hashes[0] |= (1 << h);
554 hashes[1] |= (1 << (h - 32));
557 CSR_WRITE_4(sc, VGE_MAR0, hashes[0]);
558 CSR_WRITE_4(sc, VGE_MAR1, hashes[1]);
563 vge_reset(struct vge_softc *sc)
567 CSR_WRITE_1(sc, VGE_CRS1, VGE_CR1_SOFTRESET);
569 for (i = 0; i < VGE_TIMEOUT; i++) {
571 if ((CSR_READ_1(sc, VGE_CRS1) & VGE_CR1_SOFTRESET) == 0)
575 if (i == VGE_TIMEOUT) {
576 if_printf(&sc->arpcom.ac_if, "soft reset timed out");
577 CSR_WRITE_1(sc, VGE_CRS3, VGE_CR3_STOP_FORCE);
583 CSR_SETBIT_1(sc, VGE_EECSR, VGE_EECSR_RELOAD);
585 for (i = 0; i < VGE_TIMEOUT; i++) {
587 if ((CSR_READ_1(sc, VGE_EECSR) & VGE_EECSR_RELOAD) == 0)
590 if (i == VGE_TIMEOUT) {
591 if_printf(&sc->arpcom.ac_if, "EEPROM reload timed out\n");
595 CSR_CLRBIT_1(sc, VGE_CHIPCFG0, VGE_CHIPCFG0_PACPI);
599 * Probe for a VIA gigabit chip. Check the PCI vendor and device
600 * IDs against our list and return a device name if we find a match.
603 vge_probe(device_t dev)
605 const struct vge_type *t;
608 did = pci_get_device(dev);
609 vid = pci_get_vendor(dev);
610 for (t = vge_devs; t->vge_name != NULL; ++t) {
611 if (vid == t->vge_vid && did == t->vge_did) {
612 device_set_desc(dev, t->vge_name);
620 vge_dma_map_rx_desc(void *arg, bus_dma_segment_t *segs, int nseg,
621 bus_size_t mapsize, int error)
624 struct vge_dmaload_arg *ctx;
625 struct vge_rx_desc *d = NULL;
632 /* Signal error to caller if there's too many segments */
633 if (nseg > ctx->vge_maxsegs) {
634 ctx->vge_maxsegs = 0;
639 * Map the segment array into descriptors.
641 d = &ctx->sc->vge_ldata.vge_rx_list[ctx->vge_idx];
643 /* If this descriptor is still owned by the chip, bail. */
644 if (le32toh(d->vge_sts) & VGE_RDSTS_OWN) {
645 if_printf(&ctx->sc->arpcom.ac_if,
646 "tried to map busy descriptor\n");
647 ctx->vge_maxsegs = 0;
651 d->vge_buflen = htole16(VGE_BUFLEN(segs[0].ds_len) | VGE_RXDESC_I);
652 d->vge_addrlo = htole32(VGE_ADDR_LO(segs[0].ds_addr));
653 d->vge_addrhi = htole16(VGE_ADDR_HI(segs[0].ds_addr) & 0xFFFF);
657 ctx->vge_maxsegs = 1;
661 vge_dma_map_tx_desc(void *arg, bus_dma_segment_t *segs, int nseg,
662 bus_size_t mapsize, int error)
664 struct vge_dmaload_arg *ctx;
665 struct vge_tx_desc *d = NULL;
666 struct vge_tx_frag *f;
674 /* Signal error to caller if there's too many segments */
675 if (nseg > ctx->vge_maxsegs) {
676 ctx->vge_maxsegs = 0;
680 /* Map the segment array into descriptors. */
681 d = &ctx->sc->vge_ldata.vge_tx_list[ctx->vge_idx];
683 /* If this descriptor is still owned by the chip, bail. */
684 if (le32toh(d->vge_sts) & VGE_TDSTS_OWN) {
685 ctx->vge_maxsegs = 0;
689 for (i = 0; i < nseg; i++) {
691 f->vge_buflen = htole16(VGE_BUFLEN(segs[i].ds_len));
692 f->vge_addrlo = htole32(VGE_ADDR_LO(segs[i].ds_addr));
693 f->vge_addrhi = htole16(VGE_ADDR_HI(segs[i].ds_addr) & 0xFFFF);
696 /* Argh. This chip does not autopad short frames */
697 if (ctx->vge_m0->m_pkthdr.len < VGE_MIN_FRAMELEN) {
699 f->vge_buflen = htole16(VGE_BUFLEN(VGE_MIN_FRAMELEN -
700 ctx->vge_m0->m_pkthdr.len));
701 f->vge_addrlo = htole32(VGE_ADDR_LO(segs[0].ds_addr));
702 f->vge_addrhi = htole16(VGE_ADDR_HI(segs[0].ds_addr) & 0xFFFF);
703 ctx->vge_m0->m_pkthdr.len = VGE_MIN_FRAMELEN;
708 * When telling the chip how many segments there are, we
709 * must use nsegs + 1 instead of just nsegs. Darned if I
714 d->vge_sts = ctx->vge_m0->m_pkthdr.len << 16;
715 d->vge_ctl = ctx->vge_flags|(i << 28)|VGE_TD_LS_NORM;
717 if (ctx->vge_m0->m_pkthdr.len > ETHERMTU + ETHER_HDR_LEN)
718 d->vge_ctl |= VGE_TDCTL_JUMBO;
720 ctx->vge_maxsegs = nseg;
724 * Map a single buffer address.
728 vge_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
733 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
734 *((bus_addr_t *)arg) = segs->ds_addr;
738 vge_dma_alloc(device_t dev)
740 struct vge_softc *sc = device_get_softc(dev);
741 int error, nseg, i, tx_pos = 0, rx_pos = 0;
744 * Allocate the parent bus DMA tag appropriate for PCI.
746 #define VGE_NSEG_NEW 32
747 error = bus_dma_tag_create(NULL, /* parent */
748 1, 0, /* alignment, boundary */
749 BUS_SPACE_MAXADDR_32BIT,/* lowaddr */
750 BUS_SPACE_MAXADDR, /* highaddr */
751 NULL, NULL, /* filter, filterarg */
752 MAXBSIZE, VGE_NSEG_NEW, /* maxsize, nsegments */
753 BUS_SPACE_MAXSIZE_32BIT,/* maxsegsize */
754 BUS_DMA_ALLOCNOW, /* flags */
755 &sc->vge_parent_tag);
757 device_printf(dev, "can't create parent dma tag\n");
762 * Allocate map for RX mbufs.
765 error = bus_dma_tag_create(sc->vge_parent_tag, ETHER_ALIGN, 0,
766 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
768 MCLBYTES * nseg, nseg, MCLBYTES,
769 BUS_DMA_ALLOCNOW, &sc->vge_ldata.vge_mtag);
771 device_printf(dev, "could not allocate mbuf dma tag\n");
776 * Allocate map for TX descriptor list.
778 error = bus_dma_tag_create(sc->vge_parent_tag, VGE_RING_ALIGN, 0,
779 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
781 VGE_TX_LIST_SZ, 1, VGE_TX_LIST_SZ,
783 &sc->vge_ldata.vge_tx_list_tag);
785 device_printf(dev, "could not allocate tx list dma tag\n");
789 /* Allocate DMA'able memory for the TX ring */
790 error = bus_dmamem_alloc(sc->vge_ldata.vge_tx_list_tag,
791 (void **)&sc->vge_ldata.vge_tx_list,
792 BUS_DMA_WAITOK | BUS_DMA_ZERO,
793 &sc->vge_ldata.vge_tx_list_map);
795 device_printf(dev, "could not allocate tx list dma memory\n");
799 /* Load the map for the TX ring. */
800 error = bus_dmamap_load(sc->vge_ldata.vge_tx_list_tag,
801 sc->vge_ldata.vge_tx_list_map,
802 sc->vge_ldata.vge_tx_list, VGE_TX_LIST_SZ,
804 &sc->vge_ldata.vge_tx_list_addr,
807 device_printf(dev, "could not load tx list\n");
808 bus_dmamem_free(sc->vge_ldata.vge_tx_list_tag,
809 sc->vge_ldata.vge_tx_list,
810 sc->vge_ldata.vge_tx_list_map);
811 sc->vge_ldata.vge_tx_list = NULL;
815 /* Create DMA maps for TX buffers */
816 for (i = 0; i < VGE_TX_DESC_CNT; i++) {
817 error = bus_dmamap_create(sc->vge_ldata.vge_mtag, 0,
818 &sc->vge_ldata.vge_tx_dmamap[i]);
820 device_printf(dev, "can't create DMA map for TX\n");
825 tx_pos = VGE_TX_DESC_CNT;
828 * Allocate map for RX descriptor list.
830 error = bus_dma_tag_create(sc->vge_parent_tag, VGE_RING_ALIGN, 0,
831 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
833 VGE_TX_LIST_SZ, 1, VGE_TX_LIST_SZ,
835 &sc->vge_ldata.vge_rx_list_tag);
837 device_printf(dev, "could not allocate rx list dma tag\n");
841 /* Allocate DMA'able memory for the RX ring */
842 error = bus_dmamem_alloc(sc->vge_ldata.vge_rx_list_tag,
843 (void **)&sc->vge_ldata.vge_rx_list,
844 BUS_DMA_WAITOK | BUS_DMA_ZERO,
845 &sc->vge_ldata.vge_rx_list_map);
847 device_printf(dev, "could not allocate rx list dma memory\n");
851 /* Load the map for the RX ring. */
852 error = bus_dmamap_load(sc->vge_ldata.vge_rx_list_tag,
853 sc->vge_ldata.vge_rx_list_map,
854 sc->vge_ldata.vge_rx_list, VGE_TX_LIST_SZ,
856 &sc->vge_ldata.vge_rx_list_addr,
859 device_printf(dev, "could not load rx list\n");
860 bus_dmamem_free(sc->vge_ldata.vge_rx_list_tag,
861 sc->vge_ldata.vge_rx_list,
862 sc->vge_ldata.vge_rx_list_map);
863 sc->vge_ldata.vge_rx_list = NULL;
867 /* Create DMA maps for RX buffers */
868 for (i = 0; i < VGE_RX_DESC_CNT; i++) {
869 error = bus_dmamap_create(sc->vge_ldata.vge_mtag, 0,
870 &sc->vge_ldata.vge_rx_dmamap[i]);
872 device_printf(dev, "can't create DMA map for RX\n");
880 for (i = 0; i < tx_pos; ++i) {
881 error = bus_dmamap_destroy(sc->vge_ldata.vge_mtag,
882 sc->vge_ldata.vge_tx_dmamap[i]);
884 for (i = 0; i < rx_pos; ++i) {
885 error = bus_dmamap_destroy(sc->vge_ldata.vge_mtag,
886 sc->vge_ldata.vge_rx_dmamap[i]);
888 bus_dma_tag_destroy(sc->vge_ldata.vge_mtag);
889 sc->vge_ldata.vge_mtag = NULL;
895 vge_dma_free(struct vge_softc *sc)
897 /* Unload and free the RX DMA ring memory and map */
898 if (sc->vge_ldata.vge_rx_list_tag) {
899 bus_dmamap_unload(sc->vge_ldata.vge_rx_list_tag,
900 sc->vge_ldata.vge_rx_list_map);
901 bus_dmamem_free(sc->vge_ldata.vge_rx_list_tag,
902 sc->vge_ldata.vge_rx_list,
903 sc->vge_ldata.vge_rx_list_map);
906 if (sc->vge_ldata.vge_rx_list_tag)
907 bus_dma_tag_destroy(sc->vge_ldata.vge_rx_list_tag);
909 /* Unload and free the TX DMA ring memory and map */
910 if (sc->vge_ldata.vge_tx_list_tag) {
911 bus_dmamap_unload(sc->vge_ldata.vge_tx_list_tag,
912 sc->vge_ldata.vge_tx_list_map);
913 bus_dmamem_free(sc->vge_ldata.vge_tx_list_tag,
914 sc->vge_ldata.vge_tx_list,
915 sc->vge_ldata.vge_tx_list_map);
918 if (sc->vge_ldata.vge_tx_list_tag)
919 bus_dma_tag_destroy(sc->vge_ldata.vge_tx_list_tag);
921 /* Destroy all the RX and TX buffer maps */
922 if (sc->vge_ldata.vge_mtag) {
925 for (i = 0; i < VGE_TX_DESC_CNT; i++) {
926 bus_dmamap_destroy(sc->vge_ldata.vge_mtag,
927 sc->vge_ldata.vge_tx_dmamap[i]);
929 for (i = 0; i < VGE_RX_DESC_CNT; i++) {
930 bus_dmamap_destroy(sc->vge_ldata.vge_mtag,
931 sc->vge_ldata.vge_rx_dmamap[i]);
933 bus_dma_tag_destroy(sc->vge_ldata.vge_mtag);
936 if (sc->vge_parent_tag)
937 bus_dma_tag_destroy(sc->vge_parent_tag);
941 * Attach the interface. Allocate softc structures, do ifmedia
942 * setup and ethernet/BPF attach.
945 vge_attach(device_t dev)
947 uint8_t eaddr[ETHER_ADDR_LEN];
948 struct vge_softc *sc;
952 sc = device_get_softc(dev);
953 ifp = &sc->arpcom.ac_if;
955 /* Initialize if_xname early, so if_printf() can be used */
956 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
959 * Map control/status registers.
961 pci_enable_busmaster(dev);
963 sc->vge_res_rid = VGE_PCI_LOMEM;
964 sc->vge_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
965 &sc->vge_res_rid, RF_ACTIVE);
966 if (sc->vge_res == NULL) {
967 device_printf(dev, "couldn't map ports/memory\n");
971 sc->vge_btag = rman_get_bustag(sc->vge_res);
972 sc->vge_bhandle = rman_get_bushandle(sc->vge_res);
974 /* Allocate interrupt */
976 sc->vge_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->vge_irq_rid,
977 RF_SHAREABLE | RF_ACTIVE);
978 if (sc->vge_irq == NULL) {
979 device_printf(dev, "couldn't map interrupt\n");
984 /* Reset the adapter. */
988 * Get station address from the EEPROM.
990 vge_read_eeprom(sc, eaddr, VGE_EE_EADDR, 3, 0);
992 /* Allocate DMA related stuffs */
993 error = vge_dma_alloc(dev);
998 error = mii_phy_probe(dev, &sc->vge_miibus, vge_ifmedia_upd,
1001 device_printf(dev, "MII without any phy!\n");
1006 ifp->if_mtu = ETHERMTU;
1007 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
1008 ifp->if_init = vge_init;
1009 ifp->if_start = vge_start;
1010 ifp->if_watchdog = vge_watchdog;
1011 ifp->if_ioctl = vge_ioctl;
1012 #ifdef DEVICE_POLLING
1013 ifp->if_poll = vge_poll;
1015 ifp->if_hwassist = VGE_CSUM_FEATURES;
1016 ifp->if_capabilities = IFCAP_VLAN_MTU |
1018 IFCAP_VLAN_HWTAGGING;
1019 ifp->if_capenable = ifp->if_capabilities;
1020 ifq_set_maxlen(&ifp->if_snd, VGE_IFQ_MAXLEN);
1021 ifq_set_ready(&ifp->if_snd);
1024 * Call MI attach routine.
1026 ether_ifattach(ifp, eaddr, NULL);
1028 /* Hook interrupt last to avoid having to lock softc */
1029 error = bus_setup_intr(dev, sc->vge_irq, INTR_MPSAFE, vge_intr, sc,
1030 &sc->vge_intrhand, ifp->if_serializer);
1032 device_printf(dev, "couldn't set up irq\n");
1033 ether_ifdetach(ifp);
1037 ifp->if_cpuid = ithread_cpuid(rman_get_start(sc->vge_irq));
1038 KKASSERT(ifp->if_cpuid >= 0 && ifp->if_cpuid < ncpus);
1047 * Shutdown hardware and free up resources. This can be called any
1048 * time after the mutex has been initialized. It is called in both
1049 * the error case in attach and the normal detach case so it needs
1050 * to be careful about only freeing resources that have actually been
1054 vge_detach(device_t dev)
1056 struct vge_softc *sc = device_get_softc(dev);
1057 struct ifnet *ifp = &sc->arpcom.ac_if;
1059 /* These should only be active if attach succeeded */
1060 if (device_is_attached(dev)) {
1061 lwkt_serialize_enter(ifp->if_serializer);
1064 bus_teardown_intr(dev, sc->vge_irq, sc->vge_intrhand);
1066 * Force off the IFF_UP flag here, in case someone
1067 * still had a BPF descriptor attached to this
1068 * interface. If they do, ether_ifattach() will cause
1069 * the BPF code to try and clear the promisc mode
1070 * flag, which will bubble down to vge_ioctl(),
1071 * which will try to call vge_init() again. This will
1072 * turn the NIC back on and restart the MII ticker,
1073 * which will panic the system when the kernel tries
1074 * to invoke the vge_tick() function that isn't there
1077 ifp->if_flags &= ~IFF_UP;
1079 lwkt_serialize_exit(ifp->if_serializer);
1081 ether_ifdetach(ifp);
1085 device_delete_child(dev, sc->vge_miibus);
1086 bus_generic_detach(dev);
1089 bus_release_resource(dev, SYS_RES_IRQ, sc->vge_irq_rid,
1094 bus_release_resource(dev, SYS_RES_MEMORY, sc->vge_res_rid,
1103 vge_newbuf(struct vge_softc *sc, int idx, struct mbuf *m)
1105 struct vge_dmaload_arg arg;
1106 struct mbuf *n = NULL;
1110 n = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR);
1115 m->m_data = m->m_ext.ext_buf;
1121 * This is part of an evil trick to deal with non-x86 platforms.
1122 * The VIA chip requires RX buffers to be aligned on 32-bit
1123 * boundaries, but that will hose non-x86 machines. To get around
1124 * this, we leave some empty space at the start of each buffer
1125 * and for non-x86 hosts, we copy the buffer back two bytes
1126 * to achieve word alignment. This is slightly more efficient
1127 * than allocating a new buffer, copying the contents, and
1128 * discarding the old buffer.
1130 m->m_len = m->m_pkthdr.len = MCLBYTES - VGE_ETHER_ALIGN;
1131 m_adj(m, VGE_ETHER_ALIGN);
1133 m->m_len = m->m_pkthdr.len = MCLBYTES;
1138 arg.vge_maxsegs = 1;
1141 error = bus_dmamap_load_mbuf(sc->vge_ldata.vge_mtag,
1142 sc->vge_ldata.vge_rx_dmamap[idx], m,
1143 vge_dma_map_rx_desc, &arg, BUS_DMA_NOWAIT);
1144 if (error || arg.vge_maxsegs != 1) {
1151 * Note: the manual fails to document the fact that for
1152 * proper opration, the driver needs to replentish the RX
1153 * DMA ring 4 descriptors at a time (rather than one at a
1154 * time, like most chips). We can allocate the new buffers
1155 * but we should not set the OWN bits until we're ready
1156 * to hand back 4 of them in one shot.
1159 #define VGE_RXCHUNK 4
1160 sc->vge_rx_consumed++;
1161 if (sc->vge_rx_consumed == VGE_RXCHUNK) {
1162 for (i = idx; i != idx - sc->vge_rx_consumed; i--) {
1163 sc->vge_ldata.vge_rx_list[i].vge_sts |=
1164 htole32(VGE_RDSTS_OWN);
1166 sc->vge_rx_consumed = 0;
1169 sc->vge_ldata.vge_rx_mbuf[idx] = m;
1171 bus_dmamap_sync(sc->vge_ldata.vge_mtag,
1172 sc->vge_ldata.vge_rx_dmamap[idx], BUS_DMASYNC_PREREAD);
1178 vge_tx_list_init(struct vge_softc *sc)
1180 bzero ((char *)sc->vge_ldata.vge_tx_list, VGE_TX_LIST_SZ);
1181 bzero ((char *)&sc->vge_ldata.vge_tx_mbuf,
1182 (VGE_TX_DESC_CNT * sizeof(struct mbuf *)));
1184 bus_dmamap_sync(sc->vge_ldata.vge_tx_list_tag,
1185 sc->vge_ldata.vge_tx_list_map, BUS_DMASYNC_PREWRITE);
1186 sc->vge_ldata.vge_tx_prodidx = 0;
1187 sc->vge_ldata.vge_tx_considx = 0;
1188 sc->vge_ldata.vge_tx_free = VGE_TX_DESC_CNT;
1194 vge_rx_list_init(struct vge_softc *sc)
1198 bzero(sc->vge_ldata.vge_rx_list, VGE_RX_LIST_SZ);
1199 bzero(&sc->vge_ldata.vge_rx_mbuf,
1200 VGE_RX_DESC_CNT * sizeof(struct mbuf *));
1202 sc->vge_rx_consumed = 0;
1204 for (i = 0; i < VGE_RX_DESC_CNT; i++) {
1205 if (vge_newbuf(sc, i, NULL) == ENOBUFS)
1209 /* Flush the RX descriptors */
1210 bus_dmamap_sync(sc->vge_ldata.vge_rx_list_tag,
1211 sc->vge_ldata.vge_rx_list_map,
1212 BUS_DMASYNC_PREWRITE);
1214 sc->vge_ldata.vge_rx_prodidx = 0;
1215 sc->vge_rx_consumed = 0;
1216 sc->vge_head = sc->vge_tail = NULL;
1221 static __inline void
1222 vge_fixup_rx(struct mbuf *m)
1224 uint16_t *src, *dst;
1227 src = mtod(m, uint16_t *);
1230 for (i = 0; i < (m->m_len / sizeof(uint16_t) + 1); i++)
1233 m->m_data -= ETHER_ALIGN;
1238 * RX handler. We support the reception of jumbo frames that have
1239 * been fragmented across multiple 2K mbuf cluster buffers.
1242 vge_rxeof(struct vge_softc *sc, int count)
1244 struct ifnet *ifp = &sc->arpcom.ac_if;
1246 int i, total_len, lim = 0;
1247 struct vge_rx_desc *cur_rx;
1248 uint32_t rxstat, rxctl;
1250 ASSERT_SERIALIZED(ifp->if_serializer);
1252 i = sc->vge_ldata.vge_rx_prodidx;
1254 /* Invalidate the descriptor memory */
1256 bus_dmamap_sync(sc->vge_ldata.vge_rx_list_tag,
1257 sc->vge_ldata.vge_rx_list_map, BUS_DMASYNC_POSTREAD);
1259 while (!VGE_OWN(&sc->vge_ldata.vge_rx_list[i])) {
1260 #ifdef DEVICE_POLLING
1261 if (count >= 0 && count-- == 0)
1265 cur_rx = &sc->vge_ldata.vge_rx_list[i];
1266 m = sc->vge_ldata.vge_rx_mbuf[i];
1267 total_len = VGE_RXBYTES(cur_rx);
1268 rxstat = le32toh(cur_rx->vge_sts);
1269 rxctl = le32toh(cur_rx->vge_ctl);
1271 /* Invalidate the RX mbuf and unload its map */
1272 bus_dmamap_sync(sc->vge_ldata.vge_mtag,
1273 sc->vge_ldata.vge_rx_dmamap[i],
1274 BUS_DMASYNC_POSTWRITE);
1275 bus_dmamap_unload(sc->vge_ldata.vge_mtag,
1276 sc->vge_ldata.vge_rx_dmamap[i]);
1279 * If the 'start of frame' bit is set, this indicates
1280 * either the first fragment in a multi-fragment receive,
1281 * or an intermediate fragment. Either way, we want to
1282 * accumulate the buffers.
1284 if (rxstat & VGE_RXPKT_SOF) {
1285 m->m_len = MCLBYTES - VGE_ETHER_ALIGN;
1286 if (sc->vge_head == NULL) {
1287 sc->vge_head = sc->vge_tail = m;
1289 m->m_flags &= ~M_PKTHDR;
1290 sc->vge_tail->m_next = m;
1293 vge_newbuf(sc, i, NULL);
1299 * Bad/error frames will have the RXOK bit cleared.
1300 * However, there's one error case we want to allow:
1301 * if a VLAN tagged frame arrives and the chip can't
1302 * match it against the CAM filter, it considers this
1303 * a 'VLAN CAM filter miss' and clears the 'RXOK' bit.
1304 * We don't want to drop the frame though: our VLAN
1305 * filtering is done in software.
1307 if (!(rxstat & VGE_RDSTS_RXOK) && !(rxstat & VGE_RDSTS_VIDM) &&
1308 !(rxstat & VGE_RDSTS_CSUMERR)) {
1311 * If this is part of a multi-fragment packet,
1312 * discard all the pieces.
1314 if (sc->vge_head != NULL) {
1315 m_freem(sc->vge_head);
1316 sc->vge_head = sc->vge_tail = NULL;
1318 vge_newbuf(sc, i, m);
1324 * If allocating a replacement mbuf fails,
1325 * reload the current one.
1327 if (vge_newbuf(sc, i, NULL)) {
1329 if (sc->vge_head != NULL) {
1330 m_freem(sc->vge_head);
1331 sc->vge_head = sc->vge_tail = NULL;
1333 vge_newbuf(sc, i, m);
1340 if (sc->vge_head != NULL) {
1341 m->m_len = total_len % (MCLBYTES - VGE_ETHER_ALIGN);
1343 * Special case: if there's 4 bytes or less
1344 * in this buffer, the mbuf can be discarded:
1345 * the last 4 bytes is the CRC, which we don't
1346 * care about anyway.
1348 if (m->m_len <= ETHER_CRC_LEN) {
1349 sc->vge_tail->m_len -=
1350 (ETHER_CRC_LEN - m->m_len);
1353 m->m_len -= ETHER_CRC_LEN;
1354 m->m_flags &= ~M_PKTHDR;
1355 sc->vge_tail->m_next = m;
1358 sc->vge_head = sc->vge_tail = NULL;
1359 m->m_pkthdr.len = total_len - ETHER_CRC_LEN;
1361 m->m_pkthdr.len = m->m_len =
1362 (total_len - ETHER_CRC_LEN);
1369 m->m_pkthdr.rcvif = ifp;
1371 /* Do RX checksumming if enabled */
1372 if (ifp->if_capenable & IFCAP_RXCSUM) {
1373 /* Check IP header checksum */
1374 if (rxctl & VGE_RDCTL_IPPKT)
1375 m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED;
1376 if (rxctl & VGE_RDCTL_IPCSUMOK)
1377 m->m_pkthdr.csum_flags |= CSUM_IP_VALID;
1379 /* Check TCP/UDP checksum */
1380 if (rxctl & (VGE_RDCTL_TCPPKT|VGE_RDCTL_UDPPKT) &&
1381 rxctl & VGE_RDCTL_PROTOCSUMOK) {
1382 m->m_pkthdr.csum_flags |=
1383 CSUM_DATA_VALID|CSUM_PSEUDO_HDR|
1384 CSUM_FRAG_NOT_CHECKED;
1385 m->m_pkthdr.csum_data = 0xffff;
1389 if (rxstat & VGE_RDSTS_VTAG)
1390 VLAN_INPUT_TAG(m, ntohs((rxctl & VGE_RDCTL_VLANID)));
1392 ifp->if_input(ifp, m);
1395 if (lim == VGE_RX_DESC_CNT)
1399 /* Flush the RX DMA ring */
1400 bus_dmamap_sync(sc->vge_ldata.vge_rx_list_tag,
1401 sc->vge_ldata.vge_rx_list_map,
1402 BUS_DMASYNC_PREWRITE);
1404 sc->vge_ldata.vge_rx_prodidx = i;
1405 CSR_WRITE_2(sc, VGE_RXDESC_RESIDUECNT, lim);
1409 vge_txeof(struct vge_softc *sc)
1411 struct ifnet *ifp = &sc->arpcom.ac_if;
1415 idx = sc->vge_ldata.vge_tx_considx;
1417 /* Invalidate the TX descriptor list */
1419 bus_dmamap_sync(sc->vge_ldata.vge_tx_list_tag,
1420 sc->vge_ldata.vge_tx_list_map, BUS_DMASYNC_POSTREAD);
1422 while (idx != sc->vge_ldata.vge_tx_prodidx) {
1424 txstat = le32toh(sc->vge_ldata.vge_tx_list[idx].vge_sts);
1425 if (txstat & VGE_TDSTS_OWN)
1428 m_freem(sc->vge_ldata.vge_tx_mbuf[idx]);
1429 sc->vge_ldata.vge_tx_mbuf[idx] = NULL;
1430 bus_dmamap_unload(sc->vge_ldata.vge_mtag,
1431 sc->vge_ldata.vge_tx_dmamap[idx]);
1432 if (txstat & (VGE_TDSTS_EXCESSCOLL|VGE_TDSTS_COLL))
1433 ifp->if_collisions++;
1434 if (txstat & VGE_TDSTS_TXERR)
1439 sc->vge_ldata.vge_tx_free++;
1440 VGE_TX_DESC_INC(idx);
1443 /* No changes made to the TX ring, so no flush needed */
1444 if (idx != sc->vge_ldata.vge_tx_considx) {
1445 sc->vge_ldata.vge_tx_considx = idx;
1446 ifp->if_flags &= ~IFF_OACTIVE;
1451 * If not all descriptors have been released reaped yet,
1452 * reload the timer so that we will eventually get another
1453 * interrupt that will cause us to re-enter this routine.
1454 * This is done in case the transmitter has gone idle.
1456 if (sc->vge_ldata.vge_tx_free != VGE_TX_DESC_CNT)
1457 CSR_WRITE_1(sc, VGE_CRS1, VGE_CR1_TIMER0_ENABLE);
1461 vge_tick(struct vge_softc *sc)
1463 struct ifnet *ifp = &sc->arpcom.ac_if;
1464 struct mii_data *mii;
1466 mii = device_get_softc(sc->vge_miibus);
1470 if (!(mii->mii_media_status & IFM_ACTIVE))
1473 if (mii->mii_media_status & IFM_ACTIVE &&
1474 IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
1476 if (!ifq_is_empty(&ifp->if_snd))
1482 #ifdef DEVICE_POLLING
1484 vge_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
1486 struct vge_softc *sc = ifp->if_softc;
1488 sc->rxcycles = count;
1492 vge_disable_intr(sc);
1494 case POLL_DEREGISTER:
1495 vge_enable_intr(sc, 0xffffffff);
1498 case POLL_AND_CHECK_STATUS:
1499 vge_rxeof(sc, count);
1502 if (!ifq_is_empty(&ifp->if_snd))
1505 /* XXX copy & paste from vge_intr */
1506 if (cmd == POLL_AND_CHECK_STATUS) {
1507 uint32_t status = 0;
1509 status = CSR_READ_4(sc, VGE_ISR);
1510 if (status == 0xffffffff)
1514 CSR_WRITE_4(sc, VGE_ISR, status);
1516 if (status & (VGE_ISR_TXDMA_STALL |
1517 VGE_ISR_RXDMA_STALL))
1520 if (status & (VGE_ISR_RXOFLOW | VGE_ISR_RXNODESC)) {
1522 CSR_WRITE_1(sc, VGE_RXQCSRS, VGE_RXQCSR_RUN);
1523 CSR_WRITE_1(sc, VGE_RXQCSRS, VGE_RXQCSR_WAK);
1530 #endif /* DEVICE_POLLING */
1535 struct vge_softc *sc = arg;
1536 struct ifnet *ifp = &sc->arpcom.ac_if;
1539 if (sc->suspended || !(ifp->if_flags & IFF_UP))
1542 /* Disable interrupts */
1543 CSR_WRITE_1(sc, VGE_CRC3, VGE_CR3_INT_GMSK);
1546 status = CSR_READ_4(sc, VGE_ISR);
1547 /* If the card has gone away the read returns 0xffff. */
1548 if (status == 0xFFFFFFFF)
1552 CSR_WRITE_4(sc, VGE_ISR, status);
1554 if ((status & VGE_INTRS) == 0)
1557 if (status & (VGE_ISR_RXOK|VGE_ISR_RXOK_HIPRIO))
1560 if (status & (VGE_ISR_RXOFLOW|VGE_ISR_RXNODESC)) {
1563 CSR_WRITE_1(sc, VGE_RXQCSRS, VGE_RXQCSR_RUN);
1564 CSR_WRITE_1(sc, VGE_RXQCSRS, VGE_RXQCSR_WAK);
1567 if (status & (VGE_ISR_TXOK0|VGE_ISR_TIMER0))
1570 if (status & (VGE_ISR_TXDMA_STALL|VGE_ISR_RXDMA_STALL))
1573 if (status & VGE_ISR_LINKSTS)
1577 /* Re-enable interrupts */
1578 CSR_WRITE_1(sc, VGE_CRS3, VGE_CR3_INT_GMSK);
1580 if (!ifq_is_empty(&ifp->if_snd))
1585 vge_encap(struct vge_softc *sc, struct mbuf *m_head, int idx)
1587 struct vge_dmaload_arg arg;
1593 if (m_head->m_pkthdr.csum_flags & CSUM_IP)
1594 arg.vge_flags |= VGE_TDCTL_IPCSUM;
1595 if (m_head->m_pkthdr.csum_flags & CSUM_TCP)
1596 arg.vge_flags |= VGE_TDCTL_TCPCSUM;
1597 if (m_head->m_pkthdr.csum_flags & CSUM_UDP)
1598 arg.vge_flags |= VGE_TDCTL_UDPCSUM;
1602 arg.vge_m0 = m_head;
1603 arg.vge_maxsegs = VGE_TX_FRAGS;
1605 map = sc->vge_ldata.vge_tx_dmamap[idx];
1606 error = bus_dmamap_load_mbuf(sc->vge_ldata.vge_mtag, map, m_head,
1607 vge_dma_map_tx_desc, &arg, BUS_DMA_NOWAIT);
1608 if (error && error != EFBIG) {
1609 if_printf(&sc->arpcom.ac_if, "can't map mbuf (error %d)\n",
1614 /* Too many segments to map, coalesce into a single mbuf */
1615 if (error || arg.vge_maxsegs == 0) {
1618 m_new = m_defrag(m_head, MB_DONTWAIT);
1619 if (m_new == NULL) {
1627 arg.vge_m0 = m_head;
1629 arg.vge_maxsegs = 1;
1631 error = bus_dmamap_load_mbuf(sc->vge_ldata.vge_mtag, map,
1632 m_head, vge_dma_map_tx_desc, &arg,
1635 if_printf(&sc->arpcom.ac_if,
1636 "can't map mbuf (error %d)\n", error);
1641 sc->vge_ldata.vge_tx_mbuf[idx] = m_head;
1642 sc->vge_ldata.vge_tx_free--;
1645 * Set up hardware VLAN tagging.
1647 if (m_head->m_flags & M_VLANTAG) {
1648 sc->vge_ldata.vge_tx_list[idx].vge_ctl |=
1649 htole32(htons(m_head->m_pkthdr.ether_vlantag) |
1653 sc->vge_ldata.vge_tx_list[idx].vge_sts |= htole32(VGE_TDSTS_OWN);
1662 * Main transmit routine.
1666 vge_start(struct ifnet *ifp)
1668 struct vge_softc *sc = ifp->if_softc;
1669 struct mbuf *m_head = NULL;
1672 ASSERT_SERIALIZED(ifp->if_serializer);
1674 if (!sc->vge_link) {
1675 ifq_purge(&ifp->if_snd);
1679 if ((ifp->if_flags & (IFF_OACTIVE | IFF_RUNNING)) != IFF_RUNNING)
1682 idx = sc->vge_ldata.vge_tx_prodidx;
1686 pidx = VGE_TX_DESC_CNT - 1;
1688 while (sc->vge_ldata.vge_tx_mbuf[idx] == NULL) {
1689 if (sc->vge_ldata.vge_tx_free <= 2) {
1690 ifp->if_flags |= IFF_OACTIVE;
1694 m_head = ifq_dequeue(&ifp->if_snd, NULL);
1698 if (vge_encap(sc, m_head, idx)) {
1699 /* If vge_encap() failed, it will free m_head for us */
1700 ifp->if_flags |= IFF_OACTIVE;
1704 sc->vge_ldata.vge_tx_list[pidx].vge_frag[0].vge_buflen |=
1705 htole16(VGE_TXDESC_Q);
1708 VGE_TX_DESC_INC(idx);
1711 * If there's a BPF listener, bounce a copy of this frame
1714 ETHER_BPF_MTAP(ifp, m_head);
1717 if (idx == sc->vge_ldata.vge_tx_prodidx)
1720 /* Flush the TX descriptors */
1721 bus_dmamap_sync(sc->vge_ldata.vge_tx_list_tag,
1722 sc->vge_ldata.vge_tx_list_map,
1723 BUS_DMASYNC_PREWRITE);
1725 /* Issue a transmit command. */
1726 CSR_WRITE_2(sc, VGE_TXQCSRS, VGE_TXQCSR_WAK0);
1728 sc->vge_ldata.vge_tx_prodidx = idx;
1731 * Use the countdown timer for interrupt moderation.
1732 * 'TX done' interrupts are disabled. Instead, we reset the
1733 * countdown timer, which will begin counting until it hits
1734 * the value in the SSTIMER register, and then trigger an
1735 * interrupt. Each time we set the TIMER0_ENABLE bit, the
1736 * the timer count is reloaded. Only when the transmitter
1737 * is idle will the timer hit 0 and an interrupt fire.
1739 CSR_WRITE_1(sc, VGE_CRS1, VGE_CR1_TIMER0_ENABLE);
1742 * Set a timeout in case the chip goes out to lunch.
1750 struct vge_softc *sc = xsc;
1751 struct ifnet *ifp = &sc->arpcom.ac_if;
1752 struct mii_data *mii;
1755 ASSERT_SERIALIZED(ifp->if_serializer);
1757 mii = device_get_softc(sc->vge_miibus);
1760 * Cancel pending I/O and free all RX/TX buffers.
1766 * Initialize the RX and TX descriptors and mbufs.
1768 vge_rx_list_init(sc);
1769 vge_tx_list_init(sc);
1771 /* Set our station address */
1772 for (i = 0; i < ETHER_ADDR_LEN; i++)
1773 CSR_WRITE_1(sc, VGE_PAR0 + i, IF_LLADDR(ifp)[i]);
1776 * Set receive FIFO threshold. Also allow transmission and
1777 * reception of VLAN tagged frames.
1779 CSR_CLRBIT_1(sc, VGE_RXCFG, VGE_RXCFG_FIFO_THR|VGE_RXCFG_VTAGOPT);
1780 CSR_SETBIT_1(sc, VGE_RXCFG, VGE_RXFIFOTHR_128BYTES|VGE_VTAG_OPT2);
1782 /* Set DMA burst length */
1783 CSR_CLRBIT_1(sc, VGE_DMACFG0, VGE_DMACFG0_BURSTLEN);
1784 CSR_SETBIT_1(sc, VGE_DMACFG0, VGE_DMABURST_128);
1786 CSR_SETBIT_1(sc, VGE_TXCFG, VGE_TXCFG_ARB_PRIO|VGE_TXCFG_NONBLK);
1788 /* Set collision backoff algorithm */
1789 CSR_CLRBIT_1(sc, VGE_CHIPCFG1, VGE_CHIPCFG1_CRANDOM|
1790 VGE_CHIPCFG1_CAP|VGE_CHIPCFG1_MBA|VGE_CHIPCFG1_BAKOPT);
1791 CSR_SETBIT_1(sc, VGE_CHIPCFG1, VGE_CHIPCFG1_OFSET);
1793 /* Disable LPSEL field in priority resolution */
1794 CSR_SETBIT_1(sc, VGE_DIAGCTL, VGE_DIAGCTL_LPSEL_DIS);
1797 * Load the addresses of the DMA queues into the chip.
1798 * Note that we only use one transmit queue.
1800 CSR_WRITE_4(sc, VGE_TXDESC_ADDR_LO0,
1801 VGE_ADDR_LO(sc->vge_ldata.vge_tx_list_addr));
1802 CSR_WRITE_2(sc, VGE_TXDESCNUM, VGE_TX_DESC_CNT - 1);
1804 CSR_WRITE_4(sc, VGE_RXDESC_ADDR_LO,
1805 VGE_ADDR_LO(sc->vge_ldata.vge_rx_list_addr));
1806 CSR_WRITE_2(sc, VGE_RXDESCNUM, VGE_RX_DESC_CNT - 1);
1807 CSR_WRITE_2(sc, VGE_RXDESC_RESIDUECNT, VGE_RX_DESC_CNT);
1809 /* Enable and wake up the RX descriptor queue */
1810 CSR_WRITE_1(sc, VGE_RXQCSRS, VGE_RXQCSR_RUN);
1811 CSR_WRITE_1(sc, VGE_RXQCSRS, VGE_RXQCSR_WAK);
1813 /* Enable the TX descriptor queue */
1814 CSR_WRITE_2(sc, VGE_TXQCSRS, VGE_TXQCSR_RUN0);
1816 /* Set up the receive filter -- allow large frames for VLANs. */
1817 CSR_WRITE_1(sc, VGE_RXCTL, VGE_RXCTL_RX_UCAST|VGE_RXCTL_RX_GIANT);
1819 /* If we want promiscuous mode, set the allframes bit. */
1820 if (ifp->if_flags & IFF_PROMISC)
1821 CSR_SETBIT_1(sc, VGE_RXCTL, VGE_RXCTL_RX_PROMISC);
1823 /* Set capture broadcast bit to capture broadcast frames. */
1824 if (ifp->if_flags & IFF_BROADCAST)
1825 CSR_SETBIT_1(sc, VGE_RXCTL, VGE_RXCTL_RX_BCAST);
1827 /* Set multicast bit to capture multicast frames. */
1828 if (ifp->if_flags & IFF_MULTICAST)
1829 CSR_SETBIT_1(sc, VGE_RXCTL, VGE_RXCTL_RX_MCAST);
1831 /* Init the cam filter. */
1834 /* Init the multicast filter. */
1837 /* Enable flow control */
1839 CSR_WRITE_1(sc, VGE_CRS2, 0x8B);
1841 /* Enable jumbo frame reception (if desired) */
1843 /* Start the MAC. */
1844 CSR_WRITE_1(sc, VGE_CRC0, VGE_CR0_STOP);
1845 CSR_WRITE_1(sc, VGE_CRS1, VGE_CR1_NOPOLL);
1846 CSR_WRITE_1(sc, VGE_CRS0,
1847 VGE_CR0_TX_ENABLE|VGE_CR0_RX_ENABLE|VGE_CR0_START);
1850 * Configure one-shot timer for microsecond
1851 * resulution and load it for 500 usecs.
1853 CSR_SETBIT_1(sc, VGE_DIAGCTL, VGE_DIAGCTL_TIMER0_RES);
1854 CSR_WRITE_2(sc, VGE_SSTIMER, 400);
1857 * Configure interrupt moderation for receive. Enable
1858 * the holdoff counter and load it, and set the RX
1859 * suppression count to the number of descriptors we
1860 * want to allow before triggering an interrupt.
1861 * The holdoff timer is in units of 20 usecs.
1865 CSR_WRITE_1(sc, VGE_INTCTL1, VGE_INTCTL_TXINTSUP_DISABLE);
1866 /* Select the interrupt holdoff timer page. */
1867 CSR_CLRBIT_1(sc, VGE_CAMCTL, VGE_CAMCTL_PAGESEL);
1868 CSR_SETBIT_1(sc, VGE_CAMCTL, VGE_PAGESEL_INTHLDOFF);
1869 CSR_WRITE_1(sc, VGE_INTHOLDOFF, 10); /* ~200 usecs */
1871 /* Enable use of the holdoff timer. */
1872 CSR_WRITE_1(sc, VGE_CRS3, VGE_CR3_INT_HOLDOFF);
1873 CSR_WRITE_1(sc, VGE_INTCTL1, VGE_INTCTL_SC_RELOAD);
1875 /* Select the RX suppression threshold page. */
1876 CSR_CLRBIT_1(sc, VGE_CAMCTL, VGE_CAMCTL_PAGESEL);
1877 CSR_SETBIT_1(sc, VGE_CAMCTL, VGE_PAGESEL_RXSUPPTHR);
1878 CSR_WRITE_1(sc, VGE_RXSUPPTHR, 64); /* interrupt after 64 packets */
1880 /* Restore the page select bits. */
1881 CSR_CLRBIT_1(sc, VGE_CAMCTL, VGE_CAMCTL_PAGESEL);
1882 CSR_SETBIT_1(sc, VGE_CAMCTL, VGE_PAGESEL_MAR);
1885 #ifdef DEVICE_POLLING
1886 /* Disable intr if polling(4) is enabled */
1887 if (ifp->if_flags & IFF_POLLING)
1888 vge_disable_intr(sc);
1891 vge_enable_intr(sc, 0);
1895 ifp->if_flags |= IFF_RUNNING;
1896 ifp->if_flags &= ~IFF_OACTIVE;
1898 sc->vge_if_flags = 0;
1903 * Set media options.
1906 vge_ifmedia_upd(struct ifnet *ifp)
1908 struct vge_softc *sc = ifp->if_softc;
1909 struct mii_data *mii = device_get_softc(sc->vge_miibus);
1917 * Report current media status.
1920 vge_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
1922 struct vge_softc *sc = ifp->if_softc;
1923 struct mii_data *mii = device_get_softc(sc->vge_miibus);
1926 ifmr->ifm_active = mii->mii_media_active;
1927 ifmr->ifm_status = mii->mii_media_status;
1931 vge_miibus_statchg(device_t dev)
1933 struct vge_softc *sc;
1934 struct mii_data *mii;
1935 struct ifmedia_entry *ife;
1937 sc = device_get_softc(dev);
1938 mii = device_get_softc(sc->vge_miibus);
1939 ife = mii->mii_media.ifm_cur;
1942 * If the user manually selects a media mode, we need to turn
1943 * on the forced MAC mode bit in the DIAGCTL register. If the
1944 * user happens to choose a full duplex mode, we also need to
1945 * set the 'force full duplex' bit. This applies only to
1946 * 10Mbps and 100Mbps speeds. In autoselect mode, forced MAC
1947 * mode is disabled, and in 1000baseT mode, full duplex is
1948 * always implied, so we turn on the forced mode bit but leave
1949 * the FDX bit cleared.
1952 switch (IFM_SUBTYPE(ife->ifm_media)) {
1954 CSR_CLRBIT_1(sc, VGE_DIAGCTL, VGE_DIAGCTL_MACFORCE);
1955 CSR_CLRBIT_1(sc, VGE_DIAGCTL, VGE_DIAGCTL_FDXFORCE);
1958 CSR_SETBIT_1(sc, VGE_DIAGCTL, VGE_DIAGCTL_MACFORCE);
1959 CSR_CLRBIT_1(sc, VGE_DIAGCTL, VGE_DIAGCTL_FDXFORCE);
1963 CSR_SETBIT_1(sc, VGE_DIAGCTL, VGE_DIAGCTL_MACFORCE);
1964 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX)
1965 CSR_SETBIT_1(sc, VGE_DIAGCTL, VGE_DIAGCTL_FDXFORCE);
1967 CSR_CLRBIT_1(sc, VGE_DIAGCTL, VGE_DIAGCTL_FDXFORCE);
1970 device_printf(dev, "unknown media type: %x\n",
1971 IFM_SUBTYPE(ife->ifm_media));
1977 vge_ioctl(struct ifnet *ifp, u_long command, caddr_t data, struct ucred *cr)
1979 struct vge_softc *sc = ifp->if_softc;
1980 struct ifreq *ifr = (struct ifreq *)data;
1981 struct mii_data *mii;
1986 if (ifr->ifr_mtu > VGE_JUMBO_MTU)
1988 ifp->if_mtu = ifr->ifr_mtu;
1991 if (ifp->if_flags & IFF_UP) {
1992 if ((ifp->if_flags & IFF_RUNNING) &&
1993 (ifp->if_flags & IFF_PROMISC) &&
1994 !(sc->vge_if_flags & IFF_PROMISC)) {
1995 CSR_SETBIT_1(sc, VGE_RXCTL,
1996 VGE_RXCTL_RX_PROMISC);
1998 } else if ((ifp->if_flags & IFF_RUNNING) &&
1999 !(ifp->if_flags & IFF_PROMISC) &&
2000 (sc->vge_if_flags & IFF_PROMISC)) {
2001 CSR_CLRBIT_1(sc, VGE_RXCTL,
2002 VGE_RXCTL_RX_PROMISC);
2008 if (ifp->if_flags & IFF_RUNNING)
2011 sc->vge_if_flags = ifp->if_flags;
2019 mii = device_get_softc(sc->vge_miibus);
2020 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command);
2024 uint32_t mask = ifr->ifr_reqcap ^ ifp->if_capenable;
2026 if (mask & IFCAP_HWCSUM) {
2027 ifp->if_capenable |= ifr->ifr_reqcap & (IFCAP_HWCSUM);
2028 if (ifp->if_capenable & IFCAP_TXCSUM)
2029 ifp->if_hwassist = VGE_CSUM_FEATURES;
2031 ifp->if_hwassist = 0;
2032 if (ifp->if_flags & IFF_RUNNING)
2038 error = ether_ioctl(ifp, command, data);
2045 vge_watchdog(struct ifnet *ifp)
2047 struct vge_softc *sc = ifp->if_softc;
2049 if_printf(ifp, "watchdog timeout\n");
2059 * Stop the adapter and free any mbufs allocated to the
2063 vge_stop(struct vge_softc *sc)
2065 struct ifnet *ifp = &sc->arpcom.ac_if;
2068 ASSERT_SERIALIZED(ifp->if_serializer);
2072 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
2074 CSR_WRITE_1(sc, VGE_CRC3, VGE_CR3_INT_GMSK);
2075 CSR_WRITE_1(sc, VGE_CRS0, VGE_CR0_STOP);
2076 CSR_WRITE_4(sc, VGE_ISR, 0xFFFFFFFF);
2077 CSR_WRITE_2(sc, VGE_TXQCSRC, 0xFFFF);
2078 CSR_WRITE_1(sc, VGE_RXQCSRC, 0xFF);
2079 CSR_WRITE_4(sc, VGE_RXDESC_ADDR_LO, 0);
2081 if (sc->vge_head != NULL) {
2082 m_freem(sc->vge_head);
2083 sc->vge_head = sc->vge_tail = NULL;
2086 /* Free the TX list buffers. */
2087 for (i = 0; i < VGE_TX_DESC_CNT; i++) {
2088 if (sc->vge_ldata.vge_tx_mbuf[i] != NULL) {
2089 bus_dmamap_unload(sc->vge_ldata.vge_mtag,
2090 sc->vge_ldata.vge_tx_dmamap[i]);
2091 m_freem(sc->vge_ldata.vge_tx_mbuf[i]);
2092 sc->vge_ldata.vge_tx_mbuf[i] = NULL;
2096 /* Free the RX list buffers. */
2097 for (i = 0; i < VGE_RX_DESC_CNT; i++) {
2098 if (sc->vge_ldata.vge_rx_mbuf[i] != NULL) {
2099 bus_dmamap_unload(sc->vge_ldata.vge_mtag,
2100 sc->vge_ldata.vge_rx_dmamap[i]);
2101 m_freem(sc->vge_ldata.vge_rx_mbuf[i]);
2102 sc->vge_ldata.vge_rx_mbuf[i] = NULL;
2108 * Device suspend routine. Stop the interface and save some PCI
2109 * settings in case the BIOS doesn't restore them properly on
2113 vge_suspend(device_t dev)
2115 struct vge_softc *sc = device_get_softc(dev);
2116 struct ifnet *ifp = &sc->arpcom.ac_if;
2118 lwkt_serialize_enter(ifp->if_serializer);
2121 lwkt_serialize_exit(ifp->if_serializer);
2127 * Device resume routine. Restore some PCI settings in case the BIOS
2128 * doesn't, re-enable busmastering, and restart the interface if
2132 vge_resume(device_t dev)
2134 struct vge_softc *sc = device_get_softc(dev);
2135 struct ifnet *ifp = &sc->arpcom.ac_if;
2137 /* reenable busmastering */
2138 pci_enable_busmaster(dev);
2139 pci_enable_io(dev, SYS_RES_MEMORY);
2141 lwkt_serialize_enter(ifp->if_serializer);
2142 /* reinitialize interface if necessary */
2143 if (ifp->if_flags & IFF_UP)
2147 lwkt_serialize_exit(ifp->if_serializer);
2153 * Stop all chip I/O so that the kernel's probe routines don't
2154 * get confused by errant DMAs when rebooting.
2157 vge_shutdown(device_t dev)
2159 struct vge_softc *sc = device_get_softc(dev);
2160 struct ifnet *ifp = &sc->arpcom.ac_if;
2162 lwkt_serialize_enter(ifp->if_serializer);
2164 lwkt_serialize_exit(ifp->if_serializer);
2168 vge_enable_intr(struct vge_softc *sc, uint32_t isr)
2170 CSR_WRITE_4(sc, VGE_IMR, VGE_INTRS);
2171 CSR_WRITE_4(sc, VGE_ISR, isr);
2172 CSR_WRITE_1(sc, VGE_CRS3, VGE_CR3_INT_GMSK);
2175 #ifdef DEVICE_POLLING
2177 vge_disable_intr(struct vge_softc *sc)
2179 CSR_WRITE_4(sc, VGE_IMR, 0);
2180 CSR_WRITE_1(sc, VGE_CRC3, VGE_CR3_INT_GMSK);