2 * Copyright (c) 1992, 1993, University of Vermont and State
3 * Agricultural College.
4 * Copyright (c) 1992, 1993, Garrett A. Wollman.
7 * Copyright (c) 1990, 1991, William F. Jolitz
8 * Copyright (c) 1990, The Regents of the University of California
11 * Copyright (c) 1993, 1994, Charles M. Hannum
13 * EtherExpress 16 support:
14 * Copyright (c) 1993, 1994, 1995, Rodney W. Grimes
15 * Copyright (c) 1997, Aaron C. Smith
17 * All rights reserved.
19 * Redistribution and use in source and binary forms, with or without
20 * modification, are permitted provided that the following conditions
22 * 1. Redistributions of source code must retain the above copyright
23 * notice, this list of conditions and the following disclaimer.
24 * 2. Redistributions in binary form must reproduce the above copyright
25 * notice, this list of conditions and the following disclaimer in the
26 * documentation and/or other materials provided with the distribution.
27 * 3. All advertising materials mentioning features or use of this software
28 * must display the following acknowledgement:
29 * This product includes software developed by the University of
30 * Vermont and State Agricultural College and Garrett A. Wollman, by
31 * William F. Jolitz, by the University of California, Berkeley,
32 * Lawrence Berkeley Laboratory, and their contributors, by
33 * Charles M. Hannum, by Rodney W. Grimes, and by Aaron C. Smith.
34 * 4. Neither the names of the Universities nor the names of the authors
35 * may be used to endorse or promote products derived from this software
36 * without specific prior written permission.
38 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
39 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
40 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
41 * ARE DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY OR AUTHORS BE LIABLE
42 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
43 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
44 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
45 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
46 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
47 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
50 * $FreeBSD: src/sys/dev/ie/if_ie.c,v 1.72.2.4 2003/03/27 21:01:49 mdodd Exp $
51 * $DragonFly: src/sys/dev/netif/ie/if_ie.c,v 1.17 2005/02/18 23:25:38 joerg Exp $
55 * Intel 82586 Ethernet chip
56 * Register, bit, and structure definitions.
58 * Written by GAW with reference to the Clarkson Packet Driver code for this
59 * chip written by Russ Nelson and others.
61 * Intel EtherExpress 16 support from if_ix.c, written by Rodney W. Grimes.
65 * The i82586 is a very versatile chip, found in many implementations.
66 * Programming this chip is mostly the same, but certain details differ
67 * from card to card. This driver is written so that different cards
68 * can be automatically detected at run-time.
74 We run the 82586 in a standard Ethernet mode. We keep NFRAMES received
75 frame descriptors around for the receiver to use, and NRXBUFS associated
76 receive buffer descriptors, both in a circular list. Whenever a frame is
77 received, we rotate both lists as necessary. (The 586 treats both lists
78 as a simple queue.) We also keep a transmit command around so that packets
79 can be sent off quickly.
81 We configure the adapter in AL-LOC = 1 mode, which means that the
82 Ethernet/802.3 MAC header is placed at the beginning of the receive buffer
83 rather than being split off into various fields in the RFD. This also
84 means that we must include this header in the transmit buffer as well.
86 By convention, all transmit commands, and only transmit commands, shall
87 have the I (IE_CMD_INTR) bit set in the command. This way, when an
88 interrupt arrives at ieintr(), it is immediately possible to tell
89 what precisely caused it. ANY OTHER command-sending routines should
90 run at splimp(), and should post an acknowledgement to every interrupt
93 The 82586 has a 24-bit address space internally, and the adaptor's memory
94 is located at the top of this region. However, the value we are given in
95 configuration is normally the *bottom* of the adaptor RAM. So, we must go
96 through a few gyrations to come up with a kernel virtual address which
97 represents the actual beginning of the 586 address space. First, we
98 autosize the RAM by running through several possible sizes and trying to
99 initialize the adapter under the assumption that the selected size is
100 correct. Then, knowing the correct RAM size, we set up our pointers in
101 ie_softc[unit]. `iomem' represents the computed base of the 586 address
102 space. `iomembot' represents the actual configured base of adapter RAM.
103 Finally, `iosize' represents the calculated size of 586 RAM. Then, when
104 laying out commands, we use the interval [iomembot, iomembot + iosize); to
105 make 24-pointers, we subtract iomem, and to make 16-pointers, we subtract
106 iomem and and with 0xffff.
111 #include "opt_inet.h"
114 #include <sys/param.h>
115 #include <sys/systm.h>
116 #include <sys/eventhandler.h>
117 #include <sys/kernel.h>
118 #include <sys/malloc.h>
119 #include <sys/conf.h>
120 #include <sys/mbuf.h>
121 #include <sys/socket.h>
122 #include <sys/sockio.h>
123 #include <sys/syslog.h>
125 #include <net/ethernet.h>
127 #include <net/ifq_var.h>
128 #include <net/if_types.h>
129 #include <net/if_dl.h>
131 #include <netinet/in.h>
132 #include <netinet/if_ether.h>
134 #include <machine/clock.h>
135 #include <machine/md_var.h>
137 #include <bus/isa/i386/isa_device.h>
138 #include <i386/isa/ic/i82586.h>
139 #include <i386/isa/icu.h>
140 #include "if_iereg.h"
141 #include "if_ie507.h"
142 #include "if_iee16.h"
143 #include "../elink_layer/elink.h"
148 #define IED_RINT 0x01
149 #define IED_TINT 0x02
152 #define IED_READFRAME 0x10
153 static int ie_debug = IED_RNR;
157 DECLARE_DUMMY_MODULE(if_ie);
159 #define IE_BUF_LEN ETHER_MAX_LEN /* length of transmit buffer */
161 /* Forward declaration */
164 static int ieprobe(struct isa_device * dvp);
165 static int ieattach(struct isa_device * dvp);
166 static ointhand2_t ieintr;
167 static int sl_probe(struct isa_device * dvp);
168 static int el_probe(struct isa_device * dvp);
169 static int ni_probe(struct isa_device * dvp);
170 static int ee16_probe(struct isa_device * dvp);
172 static int check_ie_present(int unit, caddr_t where, unsigned size);
173 static void ieinit(void *);
174 static void ie_stop(int unit);
175 static int ieioctl(struct ifnet * ifp, u_long command, caddr_t data,
177 static void iestart(struct ifnet * ifp);
179 static void el_reset_586(int unit);
180 static void el_chan_attn(int unit);
182 static void sl_reset_586(int unit);
183 static void sl_chan_attn(int unit);
185 static void ee16_reset_586(int unit);
186 static void ee16_chan_attn(int unit);
187 static __inline void ee16_interrupt_enable(struct ie_softc * ie);
188 static void ee16_eeprom_outbits(struct ie_softc * ie, int edata, int cnt);
189 static void ee16_eeprom_clock(struct ie_softc * ie, int state);
190 static u_short ee16_read_eeprom(struct ie_softc * ie, int location);
191 static int ee16_eeprom_inbits(struct ie_softc * ie);
192 static void ee16_shutdown(void *sc, int howto);
194 static void iereset(int unit);
195 static void ie_readframe(int unit, struct ie_softc * ie, int bufno);
196 static void ie_drop_packet_buffer(int unit, struct ie_softc * ie);
197 static void sl_read_ether(int unit, unsigned char addr[6]);
198 static void find_ie_mem_size(int unit);
199 static int command_and_wait(int unit, int command,
200 void volatile * pcmd, int);
201 static void run_tdr(int unit, volatile struct ie_tdr_cmd * cmd);
202 static int ierint(int unit, struct ie_softc * ie);
203 static int ietint(int unit, struct ie_softc * ie);
204 static int iernr(int unit, struct ie_softc * ie);
205 static void start_receiver(int unit);
206 static __inline int ieget(int, struct ie_softc *, struct mbuf **,
207 struct ether_header *);
208 static v_caddr_t setup_rfa(v_caddr_t ptr, struct ie_softc * ie);
209 static int mc_setup(int, v_caddr_t, volatile struct ie_sys_ctl_block *);
210 static void ie_mc_reset(int unit);
213 static void print_rbd(volatile struct ie_recv_buf_desc * rbd);
215 static int in_ierint = 0;
216 static int in_ietint = 0;
221 * This tells the autoconf code how to set us up.
223 struct isa_driver iedriver = {
224 ieprobe, ieattach, "ie",
237 static const char *ie_hardware_names[] = {
248 sizeof(iscp) == 1+1+2+4 == 8
249 sizeof(scb) == 2+2+2+2+2+2+2+2 == 16
250 NFRAMES * sizeof(rfd) == NFRAMES*(2+2+2+2+6+6+2+2) == NFRAMES*24 == 384
251 sizeof(xmit_cmd) == 2+2+2+2+6+2 == 18
252 sizeof(transmit buffer) == 1512
253 sizeof(transmit buffer desc) == 8
257 NRXBUFS * sizeof(rbd) == NRXBUFS*(2+2+4+2+2) == NRXBUFS*12
258 NRXBUFS * IE_RBUF_SIZE == NRXBUFS*256
260 NRXBUFS should be (16384 - 1946) / (256 + 12) == 14438 / 268 == 53
262 With NRXBUFS == 48, this leaves us 1574 bytes for another command or
263 more buffers. Another transmit command would be 18+8+1512 == 1538
266 Obviously all these would have to be reduced for smaller memory sizes.
267 With a larger memory, it would be possible to roughly double the number of
268 both transmit and receive buffers.
271 #define NFRAMES 8 /* number of receive frames */
272 #define NRXBUFS 48 /* number of buffers to allocate */
273 #define IE_RBUF_SIZE 256 /* size of each buffer, MUST BE POWER OF TWO */
274 #define NTXBUFS 2 /* number of transmit commands */
275 #define IE_TBUF_SIZE ETHER_MAX_LEN /* size of transmit buffer */
278 * Ethernet status, per interface.
280 static struct ie_softc {
281 struct arpcom arpcom;
282 void (*ie_reset_586) (int);
283 void (*ie_chan_attn) (int);
284 enum ie_hardware hard_type;
288 u_short port; /* i/o base address for this interface */
289 caddr_t iomem; /* memory size */
290 caddr_t iomembot; /* memory base address */
292 int bus_use; /* 0 means 16bit, 1 means 8 bit adapter */
299 volatile struct ie_int_sys_conf_ptr *iscp;
300 volatile struct ie_sys_ctl_block *scb;
301 volatile struct ie_recv_frame_desc **rframes; /* nframes worth */
302 volatile struct ie_recv_buf_desc **rbuffs; /* nrxbufs worth */
303 volatile u_char **cbuffs; /* nrxbufs worth */
304 int rfhead, rftail, rbhead, rbtail;
306 volatile struct ie_xmit_cmd **xmit_cmds; /* ntxbufs worth */
307 volatile struct ie_xmit_buf **xmit_buffs; /* ntxbufs worth */
308 volatile u_char **xmit_cbuffs; /* ntxbufs worth */
311 struct ie_en_addr mcast_addrs[MAXMCAST + 1];
314 u_short irq_encoded; /* encoded interrupt on IEE16 */
317 #define MK_24(base, ptr) ((caddr_t)((uintptr_t)ptr - (uintptr_t)base))
318 #define MK_16(base, ptr) ((u_short)(uintptr_t)MK_24(base, ptr))
320 #define PORT ie_softc[unit].port
321 #define MEM ie_softc[unit].iomem
324 ieprobe(struct isa_device *dvp)
334 ret = ee16_probe(dvp);
340 sl_probe(struct isa_device *dvp)
342 int unit = dvp->id_unit;
345 ie_softc[unit].port = dvp->id_iobase;
346 ie_softc[unit].iomembot = dvp->id_maddr;
347 ie_softc[unit].iomem = 0;
348 ie_softc[unit].bus_use = 0;
350 c = inb(PORT + IEATT_REVISION);
351 switch (SL_BOARD(c)) {
353 ie_softc[unit].hard_type = IE_STARLAN10;
354 ie_softc[unit].ie_reset_586 = sl_reset_586;
355 ie_softc[unit].ie_chan_attn = sl_chan_attn;
358 ie_softc[unit].hard_type = IE_EN100;
359 ie_softc[unit].ie_reset_586 = sl_reset_586;
360 ie_softc[unit].ie_chan_attn = sl_chan_attn;
363 ie_softc[unit].hard_type = IE_SLFIBER;
364 ie_softc[unit].ie_reset_586 = sl_reset_586;
365 ie_softc[unit].ie_chan_attn = sl_chan_attn;
369 * Anything else is not recognized or cannot be used.
375 ie_softc[unit].hard_vers = SL_REV(c);
378 * Divine memory size on-board the card. Ususally 16k.
380 find_ie_mem_size(unit);
382 if (!ie_softc[unit].iosize) {
385 dvp->id_msize = ie_softc[unit].iosize;
387 switch (ie_softc[unit].hard_type) {
391 sl_read_ether(unit, ie_softc[unit].arpcom.ac_enaddr);
396 printf("ie%d: unknown AT&T board type code %d\n", unit,
397 ie_softc[unit].hard_type);
406 el_probe(struct isa_device *dvp)
408 struct ie_softc *sc = &ie_softc[dvp->id_unit];
411 u_char signature[] = "*3COM*";
412 int unit = dvp->id_unit;
415 sc->port = dvp->id_iobase;
416 sc->iomembot = dvp->id_maddr;
419 /* Need this for part of the probe. */
420 sc->ie_reset_586 = el_reset_586;
421 sc->ie_chan_attn = el_chan_attn;
423 /* Reset and put card in CONFIG state without changing address. */
425 outb(ELINK_ID_PORT, 0x00);
426 elink_idseq(ELINK_507_POLY);
427 elink_idseq(ELINK_507_POLY);
428 outb(ELINK_ID_PORT, 0xff);
430 c = inb(PORT + IE507_MADDR);
433 printf("ie%d: can't map 3C507 RAM in high memory\n", unit);
437 /* go to RUN state */
438 outb(ELINK_ID_PORT, 0x00);
439 elink_idseq(ELINK_507_POLY);
440 outb(ELINK_ID_PORT, 0x00);
442 outb(PORT + IE507_CTRL, EL_CTRL_NRST);
444 for (i = 0; i < 6; i++)
445 if (inb(PORT + i) != signature[i])
448 c = inb(PORT + IE507_IRQ) & 0x0f;
450 if (dvp->id_irq != (1 << c)) {
451 printf("ie%d: kernel configured irq %d "
452 "doesn't match board configured irq %d\n",
453 unit, ffs(dvp->id_irq) - 1, c);
456 c = (inb(PORT + IE507_MADDR) & 0x1c) + 0xc0;
458 if (kvtop(dvp->id_maddr) != ((int) c << 12)) {
459 printf("ie%d: kernel configured maddr %llx "
460 "doesn't match board configured maddr %x\n",
461 unit, kvtop(dvp->id_maddr), (int) c << 12);
464 outb(PORT + IE507_CTRL, EL_CTRL_NORMAL);
466 sc->hard_type = IE_3C507;
467 sc->hard_vers = 0; /* 3C507 has no version number. */
470 * Divine memory size on-board the card.
472 find_ie_mem_size(unit);
475 printf("ie%d: can't find shared memory\n", unit);
476 outb(PORT + IE507_CTRL, EL_CTRL_NRST);
480 dvp->id_msize = sc->iosize;
481 else if (dvp->id_msize != sc->iosize) {
482 printf("ie%d: kernel configured msize %d "
483 "doesn't match board configured msize %d\n",
484 unit, dvp->id_msize, sc->iosize);
485 outb(PORT + IE507_CTRL, EL_CTRL_NRST);
488 sl_read_ether(unit, ie_softc[unit].arpcom.ac_enaddr);
490 /* Clear the interrupt latch just in case. */
491 outb(PORT + IE507_ICTRL, 1);
498 ni_probe(struct isa_device *dvp)
500 int unit = dvp->id_unit;
503 ie_softc[unit].port = dvp->id_iobase;
504 ie_softc[unit].iomembot = dvp->id_maddr;
505 ie_softc[unit].iomem = 0;
506 ie_softc[unit].bus_use = 1;
508 boardtype = inb(PORT + IEATT_REVISION);
509 c = inb(PORT + IEATT_REVISION + 1);
510 boardtype = boardtype + (c << 8);
512 case 0x5500: /* This is the magic cookie for the NI5210 */
513 ie_softc[unit].hard_type = IE_NI5210;
514 ie_softc[unit].ie_reset_586 = sl_reset_586;
515 ie_softc[unit].ie_chan_attn = sl_chan_attn;
519 * Anything else is not recognized or cannot be used.
525 ie_softc[unit].hard_vers = 0;
528 * Divine memory size on-board the card. Either 8 or 16k.
530 find_ie_mem_size(unit);
532 if (!ie_softc[unit].iosize) {
536 dvp->id_msize = ie_softc[unit].iosize;
537 else if (dvp->id_msize != ie_softc[unit].iosize) {
538 printf("ie%d: kernel configured msize %d "
539 "doesn't match board configured msize %d\n",
540 unit, dvp->id_msize, ie_softc[unit].iosize);
543 sl_read_ether(unit, ie_softc[unit].arpcom.ac_enaddr);
551 ee16_shutdown(void *sc, int howto)
553 struct ie_softc *ie = (struct ie_softc *)sc;
554 int unit = ie - &ie_softc[0];
556 ee16_reset_586(unit);
557 outb(PORT + IEE16_ECTRL, IEE16_RESET_ASIC);
558 outb(PORT + IEE16_ECTRL, 0);
562 /* Taken almost exactly from Rod's if_ix.c. */
565 ee16_probe(struct isa_device *dvp)
567 struct ie_softc *sc = &ie_softc[dvp->id_unit];
570 int unit = dvp->id_unit;
571 u_short board_id, id_var1, id_var2, checksum = 0;
572 u_short eaddrtemp, irq;
573 u_short pg, adjust, decode, edecode;
577 short irq_translate[] = {0, IRQ9, IRQ3, IRQ4, IRQ5, IRQ10, IRQ11, 0};
578 char irq_encode[] = {0, 0, 0, 2, 3, 4, 0, 0, 0, 1, 5, 6, 0, 0, 0, 0};
580 /* Need this for part of the probe. */
581 sc->ie_reset_586 = ee16_reset_586;
582 sc->ie_chan_attn = ee16_chan_attn;
584 /* unsure if this is necessary */
587 /* reset any ee16 at the current iobase */
588 outb(dvp->id_iobase + IEE16_ECTRL, IEE16_RESET_ASIC);
589 outb(dvp->id_iobase + IEE16_ECTRL, 0);
592 /* now look for ee16. */
593 board_id = id_var1 = id_var2 = 0;
594 for (i = 0; i < 4; i++) {
595 id_var1 = inb(dvp->id_iobase + IEE16_ID_PORT);
596 id_var2 = ((id_var1 & 0x03) << 2);
597 board_id |= ((id_var1 >> 4) << id_var2);
600 if (board_id != IEE16_ID) {
602 printf("ie%d: unknown board_id: %x\n", unit, board_id);
605 /* need sc->port for ee16_read_eeprom */
606 sc->port = dvp->id_iobase;
607 sc->hard_type = IE_EE16;
610 * The shared RAM location on the EE16 is encoded into bits 3-7 of
611 * EEPROM location 6. We zero the upper byte, and shift the 5 bits
612 * right 3. The resulting number tells us the RAM location.
613 * Because the EE16 supports either 16k or 32k of shared RAM, we
614 * only worry about the 32k locations.
616 * NOTE: if a 64k EE16 exists, it should be added to this switch. then
617 * the ia->ia_msize would need to be set per case statement.
619 * value msize location ===== ===== ======== 0x03 0x8000
620 * 0xCC000 0x06 0x8000 0xD0000 0x0C 0x8000 0xD4000 0x18
626 i = (ee16_read_eeprom(sc, 6) & 0x00ff) >> 3;
644 dvp->id_msize = 0x8000;
645 if (kvtop(dvp->id_maddr) != bd_maddr) {
646 printf("ie%d: kernel configured maddr %llx "
647 "doesn't match board configured maddr %lx\n",
648 unit, kvtop(dvp->id_maddr), bd_maddr);
650 sc->iomembot = dvp->id_maddr;
651 sc->iomem = 0; /* XXX some probes set this and some don't */
652 sc->iosize = dvp->id_msize;
654 /* need to put the 586 in RESET while we access the eeprom. */
655 outb(PORT + IEE16_ECTRL, IEE16_RESET_586);
657 /* read the eeprom and checksum it, should == IEE16_ID */
658 for (i = 0; i < 0x40; i++)
659 checksum += ee16_read_eeprom(sc, i);
661 if (checksum != IEE16_ID) {
662 printf("ie%d: invalid eeprom checksum: %x\n", unit, checksum);
666 * Size and test the memory on the board. The size of the memory
667 * can be one of 16k, 32k, 48k or 64k. It can be located in the
668 * address range 0xC0000 to 0xEFFFF on 16k boundaries.
670 * If the size does not match the passed in memory allocation size
671 * issue a warning, but continue with the minimum of the two sizes.
674 switch (dvp->id_msize) {
676 case 32768: /* XXX Only support 32k and 64k right now */
681 printf("ie%d: mapped memory size %d not supported\n", unit,
684 break; /* NOTREACHED */
687 if ((kvtop(dvp->id_maddr) < 0xC0000) ||
688 (kvtop(dvp->id_maddr) + sc->iosize > 0xF0000)) {
689 printf("ie%d: mapped memory location %p out of range\n", unit,
690 (void *)dvp->id_maddr);
693 pg = (kvtop(dvp->id_maddr) & 0x3C000) >> 14;
694 adjust = IEE16_MCTRL_FMCS16 | (pg & 0x3) << 2;
695 decode = ((1 << (sc->iosize / 16384)) - 1) << pg;
696 edecode = ((~decode >> 4) & 0xF0) | (decode >> 8);
698 /* ZZZ This should be checked against eeprom location 6, low byte */
699 outb(PORT + IEE16_MEMDEC, decode & 0xFF);
700 /* ZZZ This should be checked against eeprom location 1, low byte */
701 outb(PORT + IEE16_MCTRL, adjust);
702 /* ZZZ Now if I could find this one I would have it made */
703 outb(PORT + IEE16_MPCTRL, (~decode & 0xFF));
704 /* ZZZ I think this is location 6, high byte */
705 outb(PORT + IEE16_MECTRL, edecode); /* XXX disable Exxx */
707 (void) kvtop(dvp->id_maddr);
710 * first prime the stupid bart DRAM controller so that it works,
711 * then zero out all of memory.
713 bzero(sc->iomembot, 32);
714 bzero(sc->iomembot, sc->iosize);
717 * Get the encoded interrupt number from the EEPROM, check it
718 * against the passed in IRQ. Issue a warning if they do not match.
719 * Always use the passed in IRQ, not the one in the EEPROM.
721 irq = ee16_read_eeprom(sc, IEE16_EEPROM_CONFIG1);
722 irq = (irq & IEE16_EEPROM_IRQ) >> IEE16_EEPROM_IRQ_SHIFT;
723 irq = irq_translate[irq];
724 if (dvp->id_irq > 0) {
725 if (irq != dvp->id_irq) {
726 printf("ie%d: WARNING: board configured "
727 "at irq %u, using %u\n",
728 dvp->id_unit, dvp->id_irq, irq);
734 sc->irq_encoded = irq_encode[ffs(irq) - 1];
737 * Get the hardware ethernet address from the EEPROM and save it in
738 * the softc for use by the 586 setup code.
740 eaddrtemp = ee16_read_eeprom(sc, IEE16_EEPROM_ENET_HIGH);
741 sc->arpcom.ac_enaddr[1] = eaddrtemp & 0xFF;
742 sc->arpcom.ac_enaddr[0] = eaddrtemp >> 8;
743 eaddrtemp = ee16_read_eeprom(sc, IEE16_EEPROM_ENET_MID);
744 sc->arpcom.ac_enaddr[3] = eaddrtemp & 0xFF;
745 sc->arpcom.ac_enaddr[2] = eaddrtemp >> 8;
746 eaddrtemp = ee16_read_eeprom(sc, IEE16_EEPROM_ENET_LOW);
747 sc->arpcom.ac_enaddr[5] = eaddrtemp & 0xFF;
748 sc->arpcom.ac_enaddr[4] = eaddrtemp >> 8;
750 /* disable the board interrupts */
751 outb(PORT + IEE16_IRQ, sc->irq_encoded);
753 /* enable loopback to keep bad packets off the wire */
754 if (sc->hard_type == IE_EE16) {
755 bart_config = inb(PORT + IEE16_CONFIG);
756 bart_config |= IEE16_BART_LOOPBACK;
757 bart_config |= IEE16_BART_MCS16_TEST;/* inb doesn't get bit! */
758 outb(PORT + IEE16_CONFIG, bart_config);
759 bart_config = inb(PORT + IEE16_CONFIG);
761 /* take the board out of reset state */
762 outb(PORT + IEE16_ECTRL, 0);
765 if (!check_ie_present(unit, dvp->id_maddr, sc->iosize))
768 return (16); /* return the number of I/O ports */
772 * Taken almost exactly from Bill's if_is.c, then modified beyond recognition.
775 ieattach(struct isa_device *dvp)
778 int unit = dvp->id_unit;
779 struct ie_softc *ie = &ie_softc[unit];
780 struct ifnet *ifp = &ie->arpcom.ac_if;
783 dvp->id_ointr = ieintr;
786 * based on the amount of memory we have, allocate our tx and rx
789 factor = dvp->id_msize / 16384;
790 ie->nframes = factor * NFRAMES;
791 ie->nrxbufs = factor * NRXBUFS;
792 ie->ntxbufs = factor * NTXBUFS;
795 * Since all of these guys are arrays of pointers, allocate as one
796 * big chunk and dole out accordingly.
798 allocsize = sizeof(void *) * (ie->nframes
800 + (ie->ntxbufs * 3));
801 ie->rframes = malloc(allocsize, M_DEVBUF, M_WAITOK);
803 (volatile struct ie_recv_buf_desc **)&ie->rframes[ie->nframes];
804 ie->cbuffs = (volatile u_char **)&ie->rbuffs[ie->nrxbufs];
806 (volatile struct ie_xmit_cmd **)&ie->cbuffs[ie->nrxbufs];
808 (volatile struct ie_xmit_buf **)&ie->xmit_cmds[ie->ntxbufs];
809 ie->xmit_cbuffs = (volatile u_char **)&ie->xmit_buffs[ie->ntxbufs];
812 if_initname(ifp, iedriver.name, unit);
813 ifp->if_mtu = ETHERMTU;
814 if_printf(ifp, "<%s R%d>", ie_hardware_names[ie->hard_type],
817 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
818 ifp->if_start = iestart;
819 ifp->if_ioctl = ieioctl;
820 ifp->if_init = ieinit;
821 ifp->if_type = IFT_ETHER;
824 ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN);
825 ifq_set_ready(&ifp->if_snd);
827 if (ie->hard_type == IE_EE16)
828 EVENTHANDLER_REGISTER(shutdown_post_sync, ee16_shutdown,
829 ie, SHUTDOWN_PRI_DEFAULT);
831 ether_ifattach(ifp, ie->arpcom.ac_enaddr);
836 * What to do upon receipt of an interrupt.
841 struct ie_softc *ie = &ie_softc[unit];
844 /* Clear the interrupt latch on the 3C507. */
845 if (ie->hard_type == IE_3C507
846 && (inb(PORT + IE507_CTRL) & EL_CTRL_INTL))
847 outb(PORT + IE507_ICTRL, 1);
849 /* disable interrupts on the EE16. */
850 if (ie->hard_type == IE_EE16)
851 outb(PORT + IEE16_IRQ, ie->irq_encoded);
853 status = ie->scb->ie_status;
857 /* Don't ack interrupts which we didn't receive */
858 ie_ack(ie->scb, IE_ST_WHENCE & status, unit, ie->ie_chan_attn);
860 if (status & (IE_ST_RECV | IE_ST_RNR)) {
863 if (ie_debug & IED_RINT)
864 printf("ie%d: rint\n", unit);
871 if (status & IE_ST_DONE) {
874 if (ie_debug & IED_TINT)
875 printf("ie%d: tint\n", unit);
882 if (status & IE_ST_RNR) {
884 if (ie_debug & IED_RNR)
885 printf("ie%d: rnr\n", unit);
890 if ((status & IE_ST_ALLDONE)
891 && (ie_debug & IED_CNA))
892 printf("ie%d: cna\n", unit);
895 if ((status = ie->scb->ie_status) & IE_ST_WHENCE)
898 /* Clear the interrupt latch on the 3C507. */
899 if (ie->hard_type == IE_3C507)
900 outb(PORT + IE507_ICTRL, 1);
902 /* enable interrupts on the EE16. */
903 if (ie->hard_type == IE_EE16)
904 outb(PORT + IEE16_IRQ, ie->irq_encoded | IEE16_IRQ_ENABLE);
909 * Process a received-frame interrupt.
912 ierint(int unit, struct ie_softc *ie)
915 static int timesthru = 1024;
919 status = ie->rframes[i]->ie_fd_status;
921 if ((status & IE_FD_COMPLETE) && (status & IE_FD_OK)) {
922 ie->arpcom.ac_if.if_ipackets++;
924 ie->arpcom.ac_if.if_ierrors +=
925 ie->scb->ie_err_crc +
926 ie->scb->ie_err_align +
927 ie->scb->ie_err_resource +
928 ie->scb->ie_err_overrun;
929 ie->scb->ie_err_crc = 0;
930 ie->scb->ie_err_align = 0;
931 ie->scb->ie_err_resource = 0;
932 ie->scb->ie_err_overrun = 0;
935 ie_readframe(unit, ie, i);
937 if (status & IE_FD_RNR) {
938 if (!(ie->scb->ie_status & IE_RU_READY)) {
939 ie->rframes[0]->ie_fd_next =
940 MK_16(MEM, ie->rbuffs[0]);
941 ie->scb->ie_recv_list =
942 MK_16(MEM, ie->rframes[0]);
943 command_and_wait(unit, IE_RU_START,
949 i = (i + 1) % ie->nframes;
955 * Process a command-complete interrupt. These are only generated by
956 * the transmission of frames. This routine is deceptively simple, since
957 * most of the real work is done by iestart().
960 ietint(int unit, struct ie_softc *ie)
965 ie->arpcom.ac_if.if_timer = 0;
966 ie->arpcom.ac_if.if_flags &= ~IFF_OACTIVE;
968 for (i = 0; i < ie->xmit_count; i++) {
969 status = ie->xmit_cmds[i]->ie_xmit_status;
971 if (status & IE_XS_LATECOLL) {
972 printf("ie%d: late collision\n", unit);
973 ie->arpcom.ac_if.if_collisions++;
974 ie->arpcom.ac_if.if_oerrors++;
975 } else if (status & IE_XS_NOCARRIER) {
976 printf("ie%d: no carrier\n", unit);
977 ie->arpcom.ac_if.if_oerrors++;
978 } else if (status & IE_XS_LOSTCTS) {
979 printf("ie%d: lost CTS\n", unit);
980 ie->arpcom.ac_if.if_oerrors++;
981 } else if (status & IE_XS_UNDERRUN) {
982 printf("ie%d: DMA underrun\n", unit);
983 ie->arpcom.ac_if.if_oerrors++;
984 } else if (status & IE_XS_EXCMAX) {
985 printf("ie%d: too many collisions\n", unit);
986 ie->arpcom.ac_if.if_collisions += 16;
987 ie->arpcom.ac_if.if_oerrors++;
989 ie->arpcom.ac_if.if_opackets++;
990 ie->arpcom.ac_if.if_collisions += status & IE_XS_MAXCOLL;
996 * If multicast addresses were added or deleted while we were
997 * transmitting, ie_mc_reset() set the want_mcsetup flag indicating
998 * that we should do it.
1000 if (ie->want_mcsetup) {
1001 mc_setup(unit, (v_caddr_t) ie->xmit_cbuffs[0], ie->scb);
1002 ie->want_mcsetup = 0;
1004 /* Wish I knew why this seems to be necessary... */
1005 ie->xmit_cmds[0]->ie_xmit_status |= IE_STAT_COMPL;
1007 iestart(&ie->arpcom.ac_if);
1008 return (0); /* shouldn't be necessary */
1012 * Process a receiver-not-ready interrupt. I believe that we get these
1013 * when there aren't enough buffers to go around. For now (FIXME), we
1014 * just restart the receiver, and hope everything's ok.
1017 iernr(int unit, struct ie_softc *ie)
1020 setup_rfa((v_caddr_t) ie->rframes[0], ie);
1022 ie->scb->ie_recv_list = MK_16(MEM, ie_softc[unit].rframes[0]);
1023 command_and_wait(unit, IE_RU_START, 0, 0);
1025 /* This doesn't work either, but it doesn't hang either. */
1026 command_and_wait(unit, IE_RU_DISABLE, 0, 0); /* just in case */
1027 setup_rfa((v_caddr_t) ie->rframes[0], ie); /* ignore cast-qual */
1029 ie->scb->ie_recv_list = MK_16(MEM, ie_softc[unit].rframes[0]);
1030 command_and_wait(unit, IE_RU_START, 0, 0); /* was ENABLE */
1033 ie_ack(ie->scb, IE_ST_WHENCE, unit, ie->ie_chan_attn);
1035 ie->arpcom.ac_if.if_ierrors++;
1040 * Compare two Ether/802 addresses for equality, inlined and
1041 * unrolled for speed. I'd love to have an inline assembler
1042 * version of this...
1045 ether_equal(u_char * one, u_char * two)
1047 if (one[0] != two[0])
1049 if (one[1] != two[1])
1051 if (one[2] != two[2])
1053 if (one[3] != two[3])
1055 if (one[4] != two[4])
1057 if (one[5] != two[5])
1063 * Determine quickly whether we should bother reading in this packet.
1064 * This depends on whether BPF and/or bridging is enabled, whether we
1065 * are receiving multicast address, and whether promiscuous mode is enabled.
1066 * We assume that if IFF_PROMISC is set, then *somebody* wants to see
1067 * all incoming packets.
1070 check_eh(struct ie_softc *ie, struct ether_header *eh)
1072 /* Optimize the common case: normal operation. We've received
1073 either a unicast with our dest or a multicast packet. */
1074 if (ie->promisc == 0) {
1077 /* If not multicast, it's definitely for us */
1078 if ((eh->ether_dhost[0] & 1) == 0)
1081 /* Accept broadcasts (loose but fast check) */
1082 if (eh->ether_dhost[0] == 0xff)
1085 /* Compare against our multicast addresses */
1086 for (i = 0; i < ie->mcast_count; i++) {
1087 if (ether_equal(eh->ether_dhost,
1088 (u_char *)&ie->mcast_addrs[i]))
1094 /* Always accept packets when in promiscuous mode */
1095 if ((ie->promisc & IFF_PROMISC) != 0)
1098 /* Always accept packets directed at us */
1099 if (ether_equal(eh->ether_dhost, ie->arpcom.ac_enaddr))
1102 /* Must have IFF_ALLMULTI but not IFF_PROMISC set. The chip is
1103 actually in promiscuous mode, so discard unicast packets. */
1104 return((eh->ether_dhost[0] & 1) != 0);
1108 * We want to isolate the bits that have meaning... This assumes that
1109 * IE_RBUF_SIZE is an even power of two. If somehow the act_len exceeds
1110 * the size of the buffer, then we are screwed anyway.
1113 ie_buflen(struct ie_softc * ie, int head)
1115 return (ie->rbuffs[head]->ie_rbd_actual
1116 & (IE_RBUF_SIZE | (IE_RBUF_SIZE - 1)));
1120 ie_packet_len(int unit, struct ie_softc * ie)
1123 int head = ie->rbhead;
1127 if (!(ie->rbuffs[ie->rbhead]->ie_rbd_actual & IE_RBD_USED)) {
1129 print_rbd(ie->rbuffs[ie->rbhead]);
1132 "ie%d: receive descriptors out of sync at %d\n",
1137 i = ie->rbuffs[head]->ie_rbd_actual & IE_RBD_LAST;
1139 acc += ie_buflen(ie, head);
1140 head = (head + 1) % ie->nrxbufs;
1147 * Read data off the interface, and turn it into an mbuf chain.
1149 * This code is DRAMATICALLY different from the previous version; this
1150 * version tries to allocate the entire mbuf chain up front, given the
1151 * length of the data available. This enables us to allocate mbuf
1152 * clusters in many situations where before we would have had a long
1153 * chain of partially-full mbufs. This should help to speed up the
1154 * operation considerably. (Provided that it works, of course.)
1157 ieget(int unit, struct ie_softc *ie, struct mbuf **mp, struct ether_header *ehp)
1159 struct mbuf *m, *top, **mymp;
1166 totlen = ie_packet_len(unit, ie);
1173 * Snarf the Ethernet header.
1175 bcopy((v_caddr_t) ie->cbuffs[i], (caddr_t) ehp, sizeof *ehp);
1176 /* ignore cast-qual warning here */
1179 * As quickly as possible, check if this packet is for us. If not,
1180 * don't waste a single cycle copying the rest of the packet in.
1181 * This is only a consideration when FILTER is defined; i.e., when
1182 * we are either running BPF or doing multicasting.
1184 if (!check_eh(ie, ehp)) {
1185 ie_drop_packet_buffer(unit, ie);
1186 ie->arpcom.ac_if.if_ierrors--; /* just this case, it's not an
1191 totlen -= (offset = sizeof *ehp);
1193 MGETHDR(*mp, MB_DONTWAIT, MT_DATA);
1195 ie_drop_packet_buffer(unit, ie);
1199 m->m_pkthdr.rcvif = &ie->arpcom.ac_if;
1201 resid = m->m_pkthdr.len = totlen;
1206 * This loop goes through and allocates mbufs for all the data we
1207 * will be copying in. It does not actually do the copying yet.
1209 do { /* while(resid > 0) */
1211 * Try to allocate an mbuf to hold the data that we have.
1212 * If we already allocated one, just get another one and
1213 * stick it on the end (eventually). If we don't already
1214 * have one, try to allocate an mbuf cluster big enough to
1215 * hold the whole packet, if we think it's reasonable, or a
1216 * single mbuf which may or may not be big enough. Got that?
1219 MGET(m, MB_DONTWAIT, MT_DATA);
1222 ie_drop_packet_buffer(unit, ie);
1227 if (resid >= MINCLSIZE) {
1228 MCLGET(m, MB_DONTWAIT);
1229 if (m->m_flags & M_EXT)
1230 m->m_len = min(resid, MCLBYTES);
1232 if (resid < m->m_len) {
1233 if (!top && resid + max_linkhdr <= m->m_len)
1234 m->m_data += max_linkhdr;
1241 } while (resid > 0);
1249 * Now we take the mbuf chain (hopefully only one mbuf most of the
1250 * time) and stuff the data into it. There are no possible failures
1251 * at or after this point.
1253 while (resid > 0) { /* while there's stuff left */
1254 int thislen = ie_buflen(ie, head) - offset;
1257 * If too much data for the current mbuf, then fill the
1258 * current one up, go to the next one, and try again.
1260 if (thislen > m->m_len - thismboff) {
1261 int newlen = m->m_len - thismboff;
1263 bcopy((v_caddr_t) (ie->cbuffs[head] + offset),
1264 mtod(m, v_caddr_t) +thismboff, (unsigned) newlen);
1265 /* ignore cast-qual warning */
1267 thismboff = 0; /* new mbuf, so no offset */
1268 offset += newlen; /* we are now this far into
1270 resid -= newlen; /* so there is this much left
1275 * If there is more than enough space in the mbuf to hold
1276 * the contents of this buffer, copy everything in, advance
1277 * pointers, and so on.
1279 if (thislen < m->m_len - thismboff) {
1280 bcopy((v_caddr_t) (ie->cbuffs[head] + offset),
1281 mtod(m, caddr_t) +thismboff, (unsigned) thislen);
1282 thismboff += thislen; /* we are this far into the
1284 resid -= thislen; /* and this much is left */
1288 * Otherwise, there is exactly enough space to put this
1289 * buffer's contents into the current mbuf. Do the
1290 * combination of the above actions.
1292 bcopy((v_caddr_t) (ie->cbuffs[head] + offset),
1293 mtod(m, caddr_t) + thismboff, (unsigned) thislen);
1295 thismboff = 0; /* new mbuf, start at the beginning */
1296 resid -= thislen; /* and we are this far through */
1299 * Advance all the pointers. We can get here from either of
1300 * the last two cases, but never the first.
1304 ie->rbuffs[head]->ie_rbd_actual = 0;
1305 ie->rbuffs[head]->ie_rbd_length |= IE_RBD_LAST;
1306 ie->rbhead = head = (head + 1) % ie->nrxbufs;
1307 ie->rbuffs[ie->rbtail]->ie_rbd_length &= ~IE_RBD_LAST;
1308 ie->rbtail = (ie->rbtail + 1) % ie->nrxbufs;
1312 * Unless something changed strangely while we were doing the copy,
1313 * we have now copied everything in from the shared memory. This
1314 * means that we are done.
1320 * Read frame NUM from unit UNIT (pre-cached as IE).
1322 * This routine reads the RFD at NUM, and copies in the buffers from
1323 * the list of RBD, then rotates the RBD and RFD lists so that the receiver
1324 * doesn't start complaining. Trailers are DROPPED---there's no point
1325 * in wasting time on confusing code to deal with them. Hopefully,
1326 * this machine will never ARP for trailers anyway.
1329 ie_readframe(int unit, struct ie_softc *ie, int num/* frame number to read */)
1331 struct ie_recv_frame_desc rfd;
1333 struct ether_header eh;
1335 bcopy((v_caddr_t) (ie->rframes[num]), &rfd,
1336 sizeof(struct ie_recv_frame_desc));
1339 * Immediately advance the RFD list, since we we have copied ours
1342 ie->rframes[num]->ie_fd_status = 0;
1343 ie->rframes[num]->ie_fd_last |= IE_FD_LAST;
1344 ie->rframes[ie->rftail]->ie_fd_last &= ~IE_FD_LAST;
1345 ie->rftail = (ie->rftail + 1) % ie->nframes;
1346 ie->rfhead = (ie->rfhead + 1) % ie->nframes;
1348 if (rfd.ie_fd_status & IE_FD_OK) {
1349 if (ieget(unit, ie, &m, &eh)) {
1350 ie->arpcom.ac_if.if_ierrors++; /* this counts as an
1356 if (ie_debug & IED_READFRAME) {
1357 printf("ie%d: frame from ether %6D type %x\n", unit,
1358 eh.ether_shost, ":", (unsigned) eh.ether_type);
1360 if (ntohs(eh.ether_type) > ETHERTYPE_TRAIL
1361 && ntohs(eh.ether_type) < (ETHERTYPE_TRAIL + ETHERTYPE_NTRAILER))
1362 printf("received trailer!\n");
1369 * Finally pass this packet up to higher layers.
1371 ether_input(&ie->arpcom.ac_if, &eh, m);
1375 ie_drop_packet_buffer(int unit, struct ie_softc * ie)
1381 * This means we are somehow out of sync. So, we reset the
1384 if (!(ie->rbuffs[ie->rbhead]->ie_rbd_actual & IE_RBD_USED)) {
1386 print_rbd(ie->rbuffs[ie->rbhead]);
1388 log(LOG_ERR, "ie%d: receive descriptors out of sync at %d\n",
1393 i = ie->rbuffs[ie->rbhead]->ie_rbd_actual & IE_RBD_LAST;
1395 ie->rbuffs[ie->rbhead]->ie_rbd_length |= IE_RBD_LAST;
1396 ie->rbuffs[ie->rbhead]->ie_rbd_actual = 0;
1397 ie->rbhead = (ie->rbhead + 1) % ie->nrxbufs;
1398 ie->rbuffs[ie->rbtail]->ie_rbd_length &= ~IE_RBD_LAST;
1399 ie->rbtail = (ie->rbtail + 1) % ie->nrxbufs;
1405 * Start transmission on an interface.
1408 iestart(struct ifnet *ifp)
1410 struct ie_softc *ie = ifp->if_softc;
1411 struct mbuf *m0, *m;
1412 volatile unsigned char *buffer;
1416 * This is not really volatile, in this routine, but it makes gcc
1419 volatile u_short *bptr = &ie->scb->ie_command_list;
1421 if (!(ifp->if_flags & IFF_RUNNING))
1423 if (ifp->if_flags & IFF_OACTIVE)
1427 m = ifq_dequeue(&ie->arpcom.ac_if.if_snd);
1431 buffer = ie->xmit_cbuffs[ie->xmit_count];
1434 for (m0 = m; m && len < IE_BUF_LEN; m = m->m_next) {
1435 bcopy(mtod(m, caddr_t), buffer, m->m_len);
1441 len = max(len, ETHER_MIN_LEN);
1444 * See if bpf is listening on this interface, let it see the
1445 * packet before we commit it to the wire.
1447 BPF_TAP(&ie->arpcom.ac_if,
1448 __DEVOLATILE(u_char *, ie->xmit_cbuffs[ie->xmit_count]),
1451 ie->xmit_buffs[ie->xmit_count]->ie_xmit_flags =
1453 ie->xmit_buffs[ie->xmit_count]->ie_xmit_next = 0xffff;
1454 ie->xmit_buffs[ie->xmit_count]->ie_xmit_buf =
1455 MK_24(ie->iomem, ie->xmit_cbuffs[ie->xmit_count]);
1457 ie->xmit_cmds[ie->xmit_count]->com.ie_cmd_cmd = IE_CMD_XMIT;
1458 ie->xmit_cmds[ie->xmit_count]->ie_xmit_status = 0;
1459 ie->xmit_cmds[ie->xmit_count]->ie_xmit_desc =
1460 MK_16(ie->iomem, ie->xmit_buffs[ie->xmit_count]);
1462 *bptr = MK_16(ie->iomem, ie->xmit_cmds[ie->xmit_count]);
1463 bptr = &ie->xmit_cmds[ie->xmit_count]->com.ie_cmd_link;
1465 } while (ie->xmit_count < ie->ntxbufs);
1468 * If we queued up anything for transmission, send it.
1470 if (ie->xmit_count) {
1471 ie->xmit_cmds[ie->xmit_count - 1]->com.ie_cmd_cmd |=
1472 IE_CMD_LAST | IE_CMD_INTR;
1475 * By passing the command pointer as a null, we tell
1476 * command_and_wait() to pretend that this isn't an action
1477 * command. I wish I understood what was happening here.
1479 command_and_wait(ifp->if_dunit, IE_CU_START, 0, 0);
1480 ifp->if_flags |= IFF_OACTIVE;
1486 * Check to see if there's an 82586 out there.
1489 check_ie_present(int unit, caddr_t where, unsigned size)
1491 volatile struct ie_sys_conf_ptr *scp;
1492 volatile struct ie_int_sys_conf_ptr *iscp;
1493 volatile struct ie_sys_ctl_block *scb;
1499 realbase = (uintptr_t) where + size - (1 << 24);
1501 scp = (volatile struct ie_sys_conf_ptr *) (uintptr_t)
1502 (realbase + IE_SCP_ADDR);
1503 bzero((volatile char *) scp, sizeof *scp);
1506 * First we put the ISCP at the bottom of memory; this tests to make
1507 * sure that our idea of the size of memory is the same as the
1508 * controller's. This is NOT where the ISCP will be in normal
1511 iscp = (volatile struct ie_int_sys_conf_ptr *) where;
1512 bzero((volatile char *)iscp, sizeof *iscp);
1514 scb = (volatile struct ie_sys_ctl_block *) where;
1515 bzero((volatile char *)scb, sizeof *scb);
1517 scp->ie_bus_use = ie_softc[unit].bus_use; /* 8-bit or 16-bit */
1518 scp->ie_iscp_ptr = (caddr_t) (uintptr_t)
1519 ((volatile char *) iscp - (volatile char *) (uintptr_t) realbase);
1522 iscp->ie_scb_offset = MK_16(realbase, scb) + 256;
1524 (*ie_softc[unit].ie_reset_586) (unit);
1525 (*ie_softc[unit].ie_chan_attn) (unit);
1527 DELAY(100); /* wait a while... */
1529 if (iscp->ie_busy) {
1534 * Now relocate the ISCP to its real home, and reset the controller
1537 iscp = (void *) Align((caddr_t) (uintptr_t)
1538 (realbase + IE_SCP_ADDR -
1539 sizeof(struct ie_int_sys_conf_ptr)));
1540 bzero((volatile char *) iscp, sizeof *iscp); /* ignore cast-qual */
1542 scp->ie_iscp_ptr = (caddr_t) (uintptr_t)
1543 ((volatile char *) iscp - (volatile char *) (uintptr_t) realbase);
1546 iscp->ie_scb_offset = MK_16(realbase, scb);
1548 (*ie_softc[unit].ie_reset_586) (unit);
1549 (*ie_softc[unit].ie_chan_attn) (unit);
1553 if (iscp->ie_busy) {
1557 ie_softc[unit].iosize = size;
1558 ie_softc[unit].iomem = (caddr_t) (uintptr_t) realbase;
1560 ie_softc[unit].iscp = iscp;
1561 ie_softc[unit].scb = scb;
1564 * Acknowledge any interrupts we may have caused...
1566 ie_ack(scb, IE_ST_WHENCE, unit, ie_softc[unit].ie_chan_attn);
1573 * Divine the memory size of ie board UNIT.
1574 * Better hope there's nothing important hiding just below the ie card...
1577 find_ie_mem_size(int unit)
1581 ie_softc[unit].iosize = 0;
1583 for (size = 65536; size >= 8192; size -= 8192) {
1584 if (check_ie_present(unit, ie_softc[unit].iomembot, size)) {
1593 el_reset_586(int unit)
1595 outb(PORT + IE507_CTRL, EL_CTRL_RESET);
1597 outb(PORT + IE507_CTRL, EL_CTRL_NORMAL);
1602 sl_reset_586(int unit)
1604 outb(PORT + IEATT_RESET, 0);
1608 ee16_reset_586(int unit)
1610 outb(PORT + IEE16_ECTRL, IEE16_RESET_586);
1612 outb(PORT + IEE16_ECTRL, 0);
1617 el_chan_attn(int unit)
1619 outb(PORT + IE507_ATTN, 1);
1623 sl_chan_attn(int unit)
1625 outb(PORT + IEATT_ATTN, 0);
1629 ee16_chan_attn(int unit)
1631 outb(PORT + IEE16_ATTN, 0);
1635 ee16_read_eeprom(struct ie_softc *sc, int location)
1639 ectrl = inb(sc->port + IEE16_ECTRL);
1640 ectrl &= IEE16_ECTRL_MASK;
1641 ectrl |= IEE16_ECTRL_EECS;
1642 outb(sc->port + IEE16_ECTRL, ectrl);
1644 ee16_eeprom_outbits(sc, IEE16_EEPROM_READ, IEE16_EEPROM_OPSIZE1);
1645 ee16_eeprom_outbits(sc, location, IEE16_EEPROM_ADDR_SIZE);
1646 edata = ee16_eeprom_inbits(sc);
1647 ectrl = inb(sc->port + IEE16_ECTRL);
1648 ectrl &= ~(IEE16_RESET_ASIC | IEE16_ECTRL_EEDI | IEE16_ECTRL_EECS);
1649 outb(sc->port + IEE16_ECTRL, ectrl);
1650 ee16_eeprom_clock(sc, 1);
1651 ee16_eeprom_clock(sc, 0);
1656 ee16_eeprom_outbits(struct ie_softc *sc, int edata, int count)
1660 ectrl = inb(sc->port + IEE16_ECTRL);
1661 ectrl &= ~IEE16_RESET_ASIC;
1662 for (i = count - 1; i >= 0; i--) {
1663 ectrl &= ~IEE16_ECTRL_EEDI;
1664 if (edata & (1 << i)) {
1665 ectrl |= IEE16_ECTRL_EEDI;
1667 outb(sc->port + IEE16_ECTRL, ectrl);
1668 DELAY(1); /* eeprom data must be setup for 0.4 uSec */
1669 ee16_eeprom_clock(sc, 1);
1670 ee16_eeprom_clock(sc, 0);
1672 ectrl &= ~IEE16_ECTRL_EEDI;
1673 outb(sc->port + IEE16_ECTRL, ectrl);
1674 DELAY(1); /* eeprom data must be held for 0.4 uSec */
1678 ee16_eeprom_inbits(struct ie_softc *sc)
1680 int ectrl, edata, i;
1682 ectrl = inb(sc->port + IEE16_ECTRL);
1683 ectrl &= ~IEE16_RESET_ASIC;
1684 for (edata = 0, i = 0; i < 16; i++) {
1686 ee16_eeprom_clock(sc, 1);
1687 ectrl = inb(sc->port + IEE16_ECTRL);
1688 if (ectrl & IEE16_ECTRL_EEDO) {
1691 ee16_eeprom_clock(sc, 0);
1697 ee16_eeprom_clock(struct ie_softc *sc, int state)
1701 ectrl = inb(sc->port + IEE16_ECTRL);
1702 ectrl &= ~(IEE16_RESET_ASIC | IEE16_ECTRL_EESK);
1704 ectrl |= IEE16_ECTRL_EESK;
1706 outb(sc->port + IEE16_ECTRL, ectrl);
1707 DELAY(9); /* EESK must be stable for 8.38 uSec */
1710 static __inline void
1711 ee16_interrupt_enable(struct ie_softc *sc)
1714 outb(sc->port + IEE16_IRQ, sc->irq_encoded | IEE16_IRQ_ENABLE);
1719 sl_read_ether(int unit, unsigned char addr[6])
1723 for (i = 0; i < 6; i++)
1724 addr[i] = inb(PORT + i);
1737 printf("ie%d: reset\n", unit);
1738 ie_softc[unit].arpcom.ac_if.if_flags &= ~IFF_UP;
1739 ieioctl(&ie_softc[unit].arpcom.ac_if, SIOCSIFFLAGS, 0, (struct ucred *)NULL);
1742 * Stop i82586 dead in its tracks.
1744 if (command_and_wait(unit, IE_RU_ABORT | IE_CU_ABORT, 0, 0))
1745 printf("ie%d: abort commands timed out\n", unit);
1747 if (command_and_wait(unit, IE_RU_DISABLE | IE_CU_STOP, 0, 0))
1748 printf("ie%d: disable commands timed out\n", unit);
1751 if (!check_ie_present(unit, ie_softc[unit].iomembot,
1752 e_softc[unit].iosize))
1753 panic("ie disappeared!");
1756 ie_softc[unit].arpcom.ac_if.if_flags |= IFF_UP;
1757 ieioctl(&ie_softc[unit].arpcom.ac_if, SIOCSIFFLAGS, 0, (struct ucred *)NULL);
1764 * Send a command to the controller and wait for it to either
1765 * complete or be accepted, depending on the command. If the
1766 * command pointer is null, then pretend that the command is
1767 * not an action command. If the command pointer is not null,
1768 * and the command is an action command, wait for
1769 * ((volatile struct ie_cmd_common *)pcmd)->ie_cmd_status & MASK
1773 command_and_wait(int unit, int cmd, volatile void *pcmd, int mask)
1775 volatile struct ie_cmd_common *cc = pcmd;
1777 ie_softc[unit].scb->ie_command = (u_short) cmd;
1779 if (IE_ACTION_COMMAND(cmd) && pcmd) {
1781 * According to the packet driver, the minimum timeout
1782 * should be .369 seconds.
1786 (*ie_softc[unit].ie_chan_attn) (unit);
1789 * Now spin-lock waiting for status. This is not a very
1790 * nice thing to do, but I haven't figured out how, or
1791 * indeed if, we can put the process waiting for action to
1792 * sleep. (We may be getting called through some other
1793 * timeout running in the kernel.)
1795 while (--timer > 0) {
1796 if (cc->ie_cmd_status & mask)
1807 * Otherwise, just wait for the command to be accepted.
1809 (*ie_softc[unit].ie_chan_attn) (unit);
1811 while (ie_softc[unit].scb->ie_command); /* spin lock */
1818 * Run the time-domain reflectometer...
1821 run_tdr(int unit, volatile struct ie_tdr_cmd *cmd)
1825 cmd->com.ie_cmd_status = 0;
1826 cmd->com.ie_cmd_cmd = IE_CMD_TDR | IE_CMD_LAST;
1827 cmd->com.ie_cmd_link = 0xffff;
1828 cmd->ie_tdr_time = 0;
1830 ie_softc[unit].scb->ie_command_list = MK_16(MEM, cmd);
1831 cmd->ie_tdr_time = 0;
1833 if (command_and_wait(unit, IE_CU_START, cmd, IE_STAT_COMPL))
1836 result = cmd->ie_tdr_time;
1838 ie_ack(ie_softc[unit].scb, IE_ST_WHENCE, unit,
1839 ie_softc[unit].ie_chan_attn);
1841 if (result & IE_TDR_SUCCESS)
1844 if (result & IE_TDR_XCVR) {
1845 printf("ie%d: transceiver problem\n", unit);
1846 } else if (result & IE_TDR_OPEN) {
1847 printf("ie%d: TDR detected an open %d clocks away\n", unit,
1848 result & IE_TDR_TIME);
1849 } else if (result & IE_TDR_SHORT) {
1850 printf("ie%d: TDR detected a short %d clocks away\n", unit,
1851 result & IE_TDR_TIME);
1853 printf("ie%d: TDR returned unknown status %x\n", unit, result);
1858 start_receiver(int unit)
1862 ie_softc[unit].scb->ie_recv_list = MK_16(MEM, ie_softc[unit].rframes[0]);
1863 command_and_wait(unit, IE_RU_START, 0, 0);
1865 ie_ack(ie_softc[unit].scb, IE_ST_WHENCE, unit, ie_softc[unit].ie_chan_attn);
1871 * Here is a helper routine for iernr() and ieinit(). This sets up
1875 setup_rfa(v_caddr_t ptr, struct ie_softc * ie)
1877 volatile struct ie_recv_frame_desc *rfd = (volatile void *)ptr;
1878 volatile struct ie_recv_buf_desc *rbd;
1880 int unit = ie - &ie_softc[0];
1882 /* First lay them out */
1883 for (i = 0; i < ie->nframes; i++) {
1884 ie->rframes[i] = rfd;
1885 bzero((volatile char *) rfd, sizeof *rfd); /* ignore cast-qual */
1889 ptr = Alignvol(rfd); /* ignore cast-qual */
1891 /* Now link them together */
1892 for (i = 0; i < ie->nframes; i++) {
1893 ie->rframes[i]->ie_fd_next =
1894 MK_16(MEM, ie->rframes[(i + 1) % ie->nframes]);
1897 /* Finally, set the EOL bit on the last one. */
1898 ie->rframes[ie->nframes - 1]->ie_fd_last |= IE_FD_LAST;
1901 * Now lay out some buffers for the incoming frames. Note that we
1902 * set aside a bit of slop in each buffer, to make sure that we have
1903 * enough space to hold a single frame in every buffer.
1905 rbd = (volatile void *) ptr;
1907 for (i = 0; i < ie->nrxbufs; i++) {
1908 ie->rbuffs[i] = rbd;
1909 bzero((volatile char *)rbd, sizeof *rbd);
1910 ptr = Alignvol(ptr + sizeof *rbd);
1911 rbd->ie_rbd_length = IE_RBUF_SIZE;
1912 rbd->ie_rbd_buffer = MK_24(MEM, ptr);
1913 ie->cbuffs[i] = (volatile void *) ptr;
1914 ptr += IE_RBUF_SIZE;
1915 rbd = (volatile void *) ptr;
1918 /* Now link them together */
1919 for (i = 0; i < ie->nrxbufs; i++) {
1920 ie->rbuffs[i]->ie_rbd_next =
1921 MK_16(MEM, ie->rbuffs[(i + 1) % ie->nrxbufs]);
1924 /* Tag EOF on the last one */
1925 ie->rbuffs[ie->nrxbufs - 1]->ie_rbd_length |= IE_RBD_LAST;
1928 * We use the head and tail pointers on receive to keep track of the
1929 * order in which RFDs and RBDs are used.
1932 ie->rftail = ie->nframes - 1;
1934 ie->rbtail = ie->nrxbufs - 1;
1936 ie->scb->ie_recv_list = MK_16(MEM, ie->rframes[0]);
1937 ie->rframes[0]->ie_fd_buf_desc = MK_16(MEM, ie->rbuffs[0]);
1939 ptr = Alignvol(ptr);
1944 * Run the multicast setup command.
1948 mc_setup(int unit, v_caddr_t ptr,
1949 volatile struct ie_sys_ctl_block * scb)
1951 struct ie_softc *ie = &ie_softc[unit];
1952 volatile struct ie_mcast_cmd *cmd = (volatile void *) ptr;
1954 cmd->com.ie_cmd_status = 0;
1955 cmd->com.ie_cmd_cmd = IE_CMD_MCAST | IE_CMD_LAST;
1956 cmd->com.ie_cmd_link = 0xffff;
1958 /* ignore cast-qual */
1959 bcopy((v_caddr_t) ie->mcast_addrs, (v_caddr_t) cmd->ie_mcast_addrs,
1960 ie->mcast_count * sizeof *ie->mcast_addrs);
1962 cmd->ie_mcast_bytes = ie->mcast_count * 6; /* grrr... */
1964 scb->ie_command_list = MK_16(MEM, cmd);
1965 if (command_and_wait(unit, IE_CU_START, cmd, IE_STAT_COMPL)
1966 || !(cmd->com.ie_cmd_status & IE_STAT_OK)) {
1967 printf("ie%d: multicast address setup command failed\n", unit);
1974 * This routine takes the environment generated by check_ie_present()
1975 * and adds to it all the other structures we need to operate the adapter.
1976 * This includes executing the CONFIGURE, IA-SETUP, and MC-SETUP commands,
1977 * starting the receiver unit, and clearing interrupts.
1979 * THIS ROUTINE MUST BE CALLED AT splimp() OR HIGHER.
1985 struct ie_softc *ie = xsc;
1986 volatile struct ie_sys_ctl_block *scb = ie->scb;
1989 int unit = ie->unit;
1991 ptr = Alignvol((volatile char *) scb + sizeof *scb);
1994 * Send the configure command first.
1997 volatile struct ie_config_cmd *cmd = (volatile void *) ptr;
1999 ie_setup_config(cmd, ie->promisc,
2000 ie->hard_type == IE_STARLAN10);
2001 cmd->com.ie_cmd_status = 0;
2002 cmd->com.ie_cmd_cmd = IE_CMD_CONFIG | IE_CMD_LAST;
2003 cmd->com.ie_cmd_link = 0xffff;
2005 scb->ie_command_list = MK_16(MEM, cmd);
2007 if (command_and_wait(unit, IE_CU_START, cmd, IE_STAT_COMPL)
2008 || !(cmd->com.ie_cmd_status & IE_STAT_OK)) {
2009 printf("ie%d: configure command failed\n", unit);
2014 * Now send the Individual Address Setup command.
2017 volatile struct ie_iasetup_cmd *cmd = (volatile void *) ptr;
2019 cmd->com.ie_cmd_status = 0;
2020 cmd->com.ie_cmd_cmd = IE_CMD_IASETUP | IE_CMD_LAST;
2021 cmd->com.ie_cmd_link = 0xffff;
2023 bcopy((volatile char *)ie_softc[unit].arpcom.ac_enaddr,
2024 (volatile char *)&cmd->ie_address, sizeof cmd->ie_address);
2025 scb->ie_command_list = MK_16(MEM, cmd);
2026 if (command_and_wait(unit, IE_CU_START, cmd, IE_STAT_COMPL)
2027 || !(cmd->com.ie_cmd_status & IE_STAT_OK)) {
2028 printf("ie%d: individual address "
2029 "setup command failed\n", unit);
2035 * Now run the time-domain reflectometer.
2037 run_tdr(unit, (volatile void *) ptr);
2040 * Acknowledge any interrupts we have generated thus far.
2042 ie_ack(ie->scb, IE_ST_WHENCE, unit, ie->ie_chan_attn);
2047 ptr = setup_rfa(ptr, ie);
2050 * Finally, the transmit command and buffer are the last little bit
2054 /* transmit command buffers */
2055 for (i = 0; i < ie->ntxbufs; i++) {
2056 ie->xmit_cmds[i] = (volatile void *) ptr;
2057 ptr += sizeof *ie->xmit_cmds[i];
2058 ptr = Alignvol(ptr);
2059 ie->xmit_buffs[i] = (volatile void *)ptr;
2060 ptr += sizeof *ie->xmit_buffs[i];
2061 ptr = Alignvol(ptr);
2064 /* transmit buffers */
2065 for (i = 0; i < ie->ntxbufs - 1; i++) {
2066 ie->xmit_cbuffs[i] = (volatile void *)ptr;
2068 ptr = Alignvol(ptr);
2070 ie->xmit_cbuffs[ie->ntxbufs - 1] = (volatile void *) ptr;
2072 for (i = 1; i < ie->ntxbufs; i++) {
2073 bzero((v_caddr_t) ie->xmit_cmds[i], sizeof *ie->xmit_cmds[i]);
2074 bzero((v_caddr_t) ie->xmit_buffs[i], sizeof *ie->xmit_buffs[i]);
2078 * This must be coordinated with iestart() and ietint().
2080 ie->xmit_cmds[0]->ie_xmit_status = IE_STAT_COMPL;
2082 /* take the ee16 out of loopback */
2083 if (ie->hard_type == IE_EE16) {
2084 u_int8_t bart_config;
2086 bart_config = inb(PORT + IEE16_CONFIG);
2087 bart_config &= ~IEE16_BART_LOOPBACK;
2088 /* inb doesn't get bit! */
2089 bart_config |= IEE16_BART_MCS16_TEST;
2090 outb(PORT + IEE16_CONFIG, bart_config);
2091 ee16_interrupt_enable(ie);
2092 ee16_chan_attn(unit);
2094 ie->arpcom.ac_if.if_flags |= IFF_RUNNING; /* tell higher levels
2096 start_receiver(unit);
2104 command_and_wait(unit, IE_RU_DISABLE, 0, 0);
2108 ieioctl(struct ifnet *ifp, u_long command, caddr_t data, struct ucred *cr)
2118 error = ether_ioctl(ifp, command, data);
2123 * Note that this device doesn't have an "all multicast"
2124 * mode, so we must turn on promiscuous mode and do the
2125 * filtering manually.
2127 if ((ifp->if_flags & IFF_UP) == 0 &&
2128 (ifp->if_flags & IFF_RUNNING)) {
2129 ifp->if_flags &= ~IFF_RUNNING;
2130 ie_stop(ifp->if_dunit);
2131 } else if ((ifp->if_flags & IFF_UP) &&
2132 (ifp->if_flags & IFF_RUNNING) == 0) {
2133 ie_softc[ifp->if_dunit].promisc =
2134 ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI);
2135 ieinit(ifp->if_softc);
2136 } else if (ie_softc[ifp->if_dunit].promisc ^
2137 (ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI))) {
2138 ie_softc[ifp->if_dunit].promisc =
2139 ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI);
2140 ieinit(ifp->if_softc);
2147 * Update multicast listeners
2149 /* reset multicast filtering */
2150 ie_mc_reset(ifp->if_dunit);
2163 ie_mc_reset(int unit)
2165 struct ie_softc *ie = &ie_softc[unit];
2166 struct ifmultiaddr *ifma;
2169 * Step through the list of addresses.
2171 ie->mcast_count = 0;
2172 for (ifma = ie->arpcom.ac_if.if_multiaddrs.lh_first; ifma;
2173 ifma = ifma->ifma_link.le_next) {
2174 if (ifma->ifma_addr->sa_family != AF_LINK)
2177 /* XXX - this is broken... */
2178 if (ie->mcast_count >= MAXMCAST) {
2179 ie->arpcom.ac_if.if_flags |= IFF_ALLMULTI;
2180 ieioctl(&ie->arpcom.ac_if, SIOCSIFFLAGS, (void *) 0,
2181 (struct ucred *)NULL);
2184 bcopy(LLADDR((struct sockaddr_dl *) ifma->ifma_addr),
2185 &(ie->mcast_addrs[ie->mcast_count]), 6);
2190 ie->want_mcsetup = 1;
2196 print_rbd(volatile struct ie_recv_buf_desc * rbd)
2198 printf("RBD at %p:\n"
2199 "actual %04x, next %04x, buffer %p\n"
2200 "length %04x, mbz %04x\n",
2201 (volatile void *) rbd,
2202 rbd->ie_rbd_actual, rbd->ie_rbd_next,
2203 (void *) rbd->ie_rbd_buffer,
2204 rbd->ie_rbd_length, rbd->mbz);