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 1.12 2004/06/02 14:42:52 eirikn 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/if_types.h>
128 #include <net/if_dl.h>
130 #include <netinet/in.h>
131 #include <netinet/if_ether.h>
133 #include <machine/clock.h>
134 #include <machine/md_var.h>
136 #include <bus/isa/i386/isa_device.h>
137 #include <i386/isa/ic/i82586.h>
138 #include <i386/isa/icu.h>
139 #include "if_iereg.h"
140 #include "if_ie507.h"
141 #include "if_iee16.h"
142 #include "../elink_layer/elink.h"
147 #define IED_RINT 0x01
148 #define IED_TINT 0x02
151 #define IED_READFRAME 0x10
152 static int ie_debug = IED_RNR;
156 DECLARE_DUMMY_MODULE(if_ie);
158 #define IE_BUF_LEN ETHER_MAX_LEN /* length of transmit buffer */
160 /* Forward declaration */
163 static int ieprobe(struct isa_device * dvp);
164 static int ieattach(struct isa_device * dvp);
165 static ointhand2_t ieintr;
166 static int sl_probe(struct isa_device * dvp);
167 static int el_probe(struct isa_device * dvp);
168 static int ni_probe(struct isa_device * dvp);
169 static int ee16_probe(struct isa_device * dvp);
171 static int check_ie_present(int unit, caddr_t where, unsigned size);
172 static void ieinit(void *);
173 static void ie_stop(int unit);
174 static int ieioctl(struct ifnet * ifp, u_long command, caddr_t data,
176 static void iestart(struct ifnet * ifp);
178 static void el_reset_586(int unit);
179 static void el_chan_attn(int unit);
181 static void sl_reset_586(int unit);
182 static void sl_chan_attn(int unit);
184 static void ee16_reset_586(int unit);
185 static void ee16_chan_attn(int unit);
186 static __inline void ee16_interrupt_enable(struct ie_softc * ie);
187 static void ee16_eeprom_outbits(struct ie_softc * ie, int edata, int cnt);
188 static void ee16_eeprom_clock(struct ie_softc * ie, int state);
189 static u_short ee16_read_eeprom(struct ie_softc * ie, int location);
190 static int ee16_eeprom_inbits(struct ie_softc * ie);
191 static void ee16_shutdown(void *sc, int howto);
193 static void iereset(int unit);
194 static void ie_readframe(int unit, struct ie_softc * ie, int bufno);
195 static void ie_drop_packet_buffer(int unit, struct ie_softc * ie);
196 static void sl_read_ether(int unit, unsigned char addr[6]);
197 static void find_ie_mem_size(int unit);
198 static void chan_attn_timeout(void *rock);
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 printf("ie%d: <%s R%d> address %6D\n", unit,
815 ie_hardware_names[ie->hard_type],
817 ie->arpcom.ac_enaddr, ":");
819 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
820 ifp->if_output = ether_output;
821 ifp->if_start = iestart;
822 ifp->if_ioctl = ieioctl;
823 ifp->if_init = ieinit;
824 ifp->if_type = IFT_ETHER;
827 ifp->if_snd.ifq_maxlen = IFQ_MAXLEN;
829 if (ie->hard_type == IE_EE16)
830 EVENTHANDLER_REGISTER(shutdown_post_sync, ee16_shutdown,
831 ie, SHUTDOWN_PRI_DEFAULT);
833 ether_ifattach(ifp, ie->arpcom.ac_enaddr);
838 * What to do upon receipt of an interrupt.
843 struct ie_softc *ie = &ie_softc[unit];
846 /* Clear the interrupt latch on the 3C507. */
847 if (ie->hard_type == IE_3C507
848 && (inb(PORT + IE507_CTRL) & EL_CTRL_INTL))
849 outb(PORT + IE507_ICTRL, 1);
851 /* disable interrupts on the EE16. */
852 if (ie->hard_type == IE_EE16)
853 outb(PORT + IEE16_IRQ, ie->irq_encoded);
855 status = ie->scb->ie_status;
859 /* Don't ack interrupts which we didn't receive */
860 ie_ack(ie->scb, IE_ST_WHENCE & status, unit, ie->ie_chan_attn);
862 if (status & (IE_ST_RECV | IE_ST_RNR)) {
865 if (ie_debug & IED_RINT)
866 printf("ie%d: rint\n", unit);
873 if (status & IE_ST_DONE) {
876 if (ie_debug & IED_TINT)
877 printf("ie%d: tint\n", unit);
884 if (status & IE_ST_RNR) {
886 if (ie_debug & IED_RNR)
887 printf("ie%d: rnr\n", unit);
892 if ((status & IE_ST_ALLDONE)
893 && (ie_debug & IED_CNA))
894 printf("ie%d: cna\n", unit);
897 if ((status = ie->scb->ie_status) & IE_ST_WHENCE)
900 /* Clear the interrupt latch on the 3C507. */
901 if (ie->hard_type == IE_3C507)
902 outb(PORT + IE507_ICTRL, 1);
904 /* enable interrupts on the EE16. */
905 if (ie->hard_type == IE_EE16)
906 outb(PORT + IEE16_IRQ, ie->irq_encoded | IEE16_IRQ_ENABLE);
911 * Process a received-frame interrupt.
914 ierint(int unit, struct ie_softc *ie)
917 static int timesthru = 1024;
921 status = ie->rframes[i]->ie_fd_status;
923 if ((status & IE_FD_COMPLETE) && (status & IE_FD_OK)) {
924 ie->arpcom.ac_if.if_ipackets++;
926 ie->arpcom.ac_if.if_ierrors +=
927 ie->scb->ie_err_crc +
928 ie->scb->ie_err_align +
929 ie->scb->ie_err_resource +
930 ie->scb->ie_err_overrun;
931 ie->scb->ie_err_crc = 0;
932 ie->scb->ie_err_align = 0;
933 ie->scb->ie_err_resource = 0;
934 ie->scb->ie_err_overrun = 0;
937 ie_readframe(unit, ie, i);
939 if (status & IE_FD_RNR) {
940 if (!(ie->scb->ie_status & IE_RU_READY)) {
941 ie->rframes[0]->ie_fd_next =
942 MK_16(MEM, ie->rbuffs[0]);
943 ie->scb->ie_recv_list =
944 MK_16(MEM, ie->rframes[0]);
945 command_and_wait(unit, IE_RU_START,
951 i = (i + 1) % ie->nframes;
957 * Process a command-complete interrupt. These are only generated by
958 * the transmission of frames. This routine is deceptively simple, since
959 * most of the real work is done by iestart().
962 ietint(int unit, struct ie_softc *ie)
967 ie->arpcom.ac_if.if_timer = 0;
968 ie->arpcom.ac_if.if_flags &= ~IFF_OACTIVE;
970 for (i = 0; i < ie->xmit_count; i++) {
971 status = ie->xmit_cmds[i]->ie_xmit_status;
973 if (status & IE_XS_LATECOLL) {
974 printf("ie%d: late collision\n", unit);
975 ie->arpcom.ac_if.if_collisions++;
976 ie->arpcom.ac_if.if_oerrors++;
977 } else if (status & IE_XS_NOCARRIER) {
978 printf("ie%d: no carrier\n", unit);
979 ie->arpcom.ac_if.if_oerrors++;
980 } else if (status & IE_XS_LOSTCTS) {
981 printf("ie%d: lost CTS\n", unit);
982 ie->arpcom.ac_if.if_oerrors++;
983 } else if (status & IE_XS_UNDERRUN) {
984 printf("ie%d: DMA underrun\n", unit);
985 ie->arpcom.ac_if.if_oerrors++;
986 } else if (status & IE_XS_EXCMAX) {
987 printf("ie%d: too many collisions\n", unit);
988 ie->arpcom.ac_if.if_collisions += 16;
989 ie->arpcom.ac_if.if_oerrors++;
991 ie->arpcom.ac_if.if_opackets++;
992 ie->arpcom.ac_if.if_collisions += status & IE_XS_MAXCOLL;
998 * If multicast addresses were added or deleted while we were
999 * transmitting, ie_mc_reset() set the want_mcsetup flag indicating
1000 * that we should do it.
1002 if (ie->want_mcsetup) {
1003 mc_setup(unit, (v_caddr_t) ie->xmit_cbuffs[0], ie->scb);
1004 ie->want_mcsetup = 0;
1006 /* Wish I knew why this seems to be necessary... */
1007 ie->xmit_cmds[0]->ie_xmit_status |= IE_STAT_COMPL;
1009 iestart(&ie->arpcom.ac_if);
1010 return (0); /* shouldn't be necessary */
1014 * Process a receiver-not-ready interrupt. I believe that we get these
1015 * when there aren't enough buffers to go around. For now (FIXME), we
1016 * just restart the receiver, and hope everything's ok.
1019 iernr(int unit, struct ie_softc *ie)
1022 setup_rfa((v_caddr_t) ie->rframes[0], ie);
1024 ie->scb->ie_recv_list = MK_16(MEM, ie_softc[unit].rframes[0]);
1025 command_and_wait(unit, IE_RU_START, 0, 0);
1027 /* This doesn't work either, but it doesn't hang either. */
1028 command_and_wait(unit, IE_RU_DISABLE, 0, 0); /* just in case */
1029 setup_rfa((v_caddr_t) ie->rframes[0], ie); /* ignore cast-qual */
1031 ie->scb->ie_recv_list = MK_16(MEM, ie_softc[unit].rframes[0]);
1032 command_and_wait(unit, IE_RU_START, 0, 0); /* was ENABLE */
1035 ie_ack(ie->scb, IE_ST_WHENCE, unit, ie->ie_chan_attn);
1037 ie->arpcom.ac_if.if_ierrors++;
1042 * Compare two Ether/802 addresses for equality, inlined and
1043 * unrolled for speed. I'd love to have an inline assembler
1044 * version of this...
1047 ether_equal(u_char * one, u_char * two)
1049 if (one[0] != two[0])
1051 if (one[1] != two[1])
1053 if (one[2] != two[2])
1055 if (one[3] != two[3])
1057 if (one[4] != two[4])
1059 if (one[5] != two[5])
1065 * Determine quickly whether we should bother reading in this packet.
1066 * This depends on whether BPF and/or bridging is enabled, whether we
1067 * are receiving multicast address, and whether promiscuous mode is enabled.
1068 * We assume that if IFF_PROMISC is set, then *somebody* wants to see
1069 * all incoming packets.
1072 check_eh(struct ie_softc *ie, struct ether_header *eh)
1074 /* Optimize the common case: normal operation. We've received
1075 either a unicast with our dest or a multicast packet. */
1076 if (ie->promisc == 0) {
1079 /* If not multicast, it's definitely for us */
1080 if ((eh->ether_dhost[0] & 1) == 0)
1083 /* Accept broadcasts (loose but fast check) */
1084 if (eh->ether_dhost[0] == 0xff)
1087 /* Compare against our multicast addresses */
1088 for (i = 0; i < ie->mcast_count; i++) {
1089 if (ether_equal(eh->ether_dhost,
1090 (u_char *)&ie->mcast_addrs[i]))
1096 /* Always accept packets when in promiscuous mode */
1097 if ((ie->promisc & IFF_PROMISC) != 0)
1100 /* Always accept packets directed at us */
1101 if (ether_equal(eh->ether_dhost, ie->arpcom.ac_enaddr))
1104 /* Must have IFF_ALLMULTI but not IFF_PROMISC set. The chip is
1105 actually in promiscuous mode, so discard unicast packets. */
1106 return((eh->ether_dhost[0] & 1) != 0);
1110 * We want to isolate the bits that have meaning... This assumes that
1111 * IE_RBUF_SIZE is an even power of two. If somehow the act_len exceeds
1112 * the size of the buffer, then we are screwed anyway.
1115 ie_buflen(struct ie_softc * ie, int head)
1117 return (ie->rbuffs[head]->ie_rbd_actual
1118 & (IE_RBUF_SIZE | (IE_RBUF_SIZE - 1)));
1122 ie_packet_len(int unit, struct ie_softc * ie)
1125 int head = ie->rbhead;
1129 if (!(ie->rbuffs[ie->rbhead]->ie_rbd_actual & IE_RBD_USED)) {
1131 print_rbd(ie->rbuffs[ie->rbhead]);
1134 "ie%d: receive descriptors out of sync at %d\n",
1139 i = ie->rbuffs[head]->ie_rbd_actual & IE_RBD_LAST;
1141 acc += ie_buflen(ie, head);
1142 head = (head + 1) % ie->nrxbufs;
1149 * Read data off the interface, and turn it into an mbuf chain.
1151 * This code is DRAMATICALLY different from the previous version; this
1152 * version tries to allocate the entire mbuf chain up front, given the
1153 * length of the data available. This enables us to allocate mbuf
1154 * clusters in many situations where before we would have had a long
1155 * chain of partially-full mbufs. This should help to speed up the
1156 * operation considerably. (Provided that it works, of course.)
1159 ieget(int unit, struct ie_softc *ie, struct mbuf **mp, struct ether_header *ehp)
1161 struct mbuf *m, *top, **mymp;
1168 totlen = ie_packet_len(unit, ie);
1175 * Snarf the Ethernet header.
1177 bcopy((v_caddr_t) ie->cbuffs[i], (caddr_t) ehp, sizeof *ehp);
1178 /* ignore cast-qual warning here */
1181 * As quickly as possible, check if this packet is for us. If not,
1182 * don't waste a single cycle copying the rest of the packet in.
1183 * This is only a consideration when FILTER is defined; i.e., when
1184 * we are either running BPF or doing multicasting.
1186 if (!check_eh(ie, ehp)) {
1187 ie_drop_packet_buffer(unit, ie);
1188 ie->arpcom.ac_if.if_ierrors--; /* just this case, it's not an
1193 totlen -= (offset = sizeof *ehp);
1195 MGETHDR(*mp, MB_DONTWAIT, MT_DATA);
1197 ie_drop_packet_buffer(unit, ie);
1201 m->m_pkthdr.rcvif = &ie->arpcom.ac_if;
1203 resid = m->m_pkthdr.len = totlen;
1208 * This loop goes through and allocates mbufs for all the data we
1209 * will be copying in. It does not actually do the copying yet.
1211 do { /* while(resid > 0) */
1213 * Try to allocate an mbuf to hold the data that we have.
1214 * If we already allocated one, just get another one and
1215 * stick it on the end (eventually). If we don't already
1216 * have one, try to allocate an mbuf cluster big enough to
1217 * hold the whole packet, if we think it's reasonable, or a
1218 * single mbuf which may or may not be big enough. Got that?
1221 MGET(m, MB_DONTWAIT, MT_DATA);
1224 ie_drop_packet_buffer(unit, ie);
1229 if (resid >= MINCLSIZE) {
1230 MCLGET(m, MB_DONTWAIT);
1231 if (m->m_flags & M_EXT)
1232 m->m_len = min(resid, MCLBYTES);
1234 if (resid < m->m_len) {
1235 if (!top && resid + max_linkhdr <= m->m_len)
1236 m->m_data += max_linkhdr;
1243 } while (resid > 0);
1251 * Now we take the mbuf chain (hopefully only one mbuf most of the
1252 * time) and stuff the data into it. There are no possible failures
1253 * at or after this point.
1255 while (resid > 0) { /* while there's stuff left */
1256 int thislen = ie_buflen(ie, head) - offset;
1259 * If too much data for the current mbuf, then fill the
1260 * current one up, go to the next one, and try again.
1262 if (thislen > m->m_len - thismboff) {
1263 int newlen = m->m_len - thismboff;
1265 bcopy((v_caddr_t) (ie->cbuffs[head] + offset),
1266 mtod(m, v_caddr_t) +thismboff, (unsigned) newlen);
1267 /* ignore cast-qual warning */
1269 thismboff = 0; /* new mbuf, so no offset */
1270 offset += newlen; /* we are now this far into
1272 resid -= newlen; /* so there is this much left
1277 * If there is more than enough space in the mbuf to hold
1278 * the contents of this buffer, copy everything in, advance
1279 * pointers, and so on.
1281 if (thislen < m->m_len - thismboff) {
1282 bcopy((v_caddr_t) (ie->cbuffs[head] + offset),
1283 mtod(m, caddr_t) +thismboff, (unsigned) thislen);
1284 thismboff += thislen; /* we are this far into the
1286 resid -= thislen; /* and this much is left */
1290 * Otherwise, there is exactly enough space to put this
1291 * buffer's contents into the current mbuf. Do the
1292 * combination of the above actions.
1294 bcopy((v_caddr_t) (ie->cbuffs[head] + offset),
1295 mtod(m, caddr_t) + thismboff, (unsigned) thislen);
1297 thismboff = 0; /* new mbuf, start at the beginning */
1298 resid -= thislen; /* and we are this far through */
1301 * Advance all the pointers. We can get here from either of
1302 * the last two cases, but never the first.
1306 ie->rbuffs[head]->ie_rbd_actual = 0;
1307 ie->rbuffs[head]->ie_rbd_length |= IE_RBD_LAST;
1308 ie->rbhead = head = (head + 1) % ie->nrxbufs;
1309 ie->rbuffs[ie->rbtail]->ie_rbd_length &= ~IE_RBD_LAST;
1310 ie->rbtail = (ie->rbtail + 1) % ie->nrxbufs;
1314 * Unless something changed strangely while we were doing the copy,
1315 * we have now copied everything in from the shared memory. This
1316 * means that we are done.
1322 * Read frame NUM from unit UNIT (pre-cached as IE).
1324 * This routine reads the RFD at NUM, and copies in the buffers from
1325 * the list of RBD, then rotates the RBD and RFD lists so that the receiver
1326 * doesn't start complaining. Trailers are DROPPED---there's no point
1327 * in wasting time on confusing code to deal with them. Hopefully,
1328 * this machine will never ARP for trailers anyway.
1331 ie_readframe(int unit, struct ie_softc *ie, int num/* frame number to read */)
1333 struct ie_recv_frame_desc rfd;
1335 struct ether_header eh;
1337 bcopy((v_caddr_t) (ie->rframes[num]), &rfd,
1338 sizeof(struct ie_recv_frame_desc));
1341 * Immediately advance the RFD list, since we we have copied ours
1344 ie->rframes[num]->ie_fd_status = 0;
1345 ie->rframes[num]->ie_fd_last |= IE_FD_LAST;
1346 ie->rframes[ie->rftail]->ie_fd_last &= ~IE_FD_LAST;
1347 ie->rftail = (ie->rftail + 1) % ie->nframes;
1348 ie->rfhead = (ie->rfhead + 1) % ie->nframes;
1350 if (rfd.ie_fd_status & IE_FD_OK) {
1351 if (ieget(unit, ie, &m, &eh)) {
1352 ie->arpcom.ac_if.if_ierrors++; /* this counts as an
1358 if (ie_debug & IED_READFRAME) {
1359 printf("ie%d: frame from ether %6D type %x\n", unit,
1360 eh.ether_shost, ":", (unsigned) eh.ether_type);
1362 if (ntohs(eh.ether_type) > ETHERTYPE_TRAIL
1363 && ntohs(eh.ether_type) < (ETHERTYPE_TRAIL + ETHERTYPE_NTRAILER))
1364 printf("received trailer!\n");
1371 * Finally pass this packet up to higher layers.
1373 ether_input(&ie->arpcom.ac_if, &eh, m);
1377 ie_drop_packet_buffer(int unit, struct ie_softc * ie)
1383 * This means we are somehow out of sync. So, we reset the
1386 if (!(ie->rbuffs[ie->rbhead]->ie_rbd_actual & IE_RBD_USED)) {
1388 print_rbd(ie->rbuffs[ie->rbhead]);
1390 log(LOG_ERR, "ie%d: receive descriptors out of sync at %d\n",
1395 i = ie->rbuffs[ie->rbhead]->ie_rbd_actual & IE_RBD_LAST;
1397 ie->rbuffs[ie->rbhead]->ie_rbd_length |= IE_RBD_LAST;
1398 ie->rbuffs[ie->rbhead]->ie_rbd_actual = 0;
1399 ie->rbhead = (ie->rbhead + 1) % ie->nrxbufs;
1400 ie->rbuffs[ie->rbtail]->ie_rbd_length &= ~IE_RBD_LAST;
1401 ie->rbtail = (ie->rbtail + 1) % ie->nrxbufs;
1407 * Start transmission on an interface.
1410 iestart(struct ifnet *ifp)
1412 struct ie_softc *ie = ifp->if_softc;
1413 struct mbuf *m0, *m;
1414 volatile unsigned char *buffer;
1418 * This is not really volatile, in this routine, but it makes gcc
1421 volatile u_short *bptr = &ie->scb->ie_command_list;
1423 if (!(ifp->if_flags & IFF_RUNNING))
1425 if (ifp->if_flags & IFF_OACTIVE)
1429 IF_DEQUEUE(&ie->arpcom.ac_if.if_snd, m);
1433 buffer = ie->xmit_cbuffs[ie->xmit_count];
1436 for (m0 = m; m && len < IE_BUF_LEN; m = m->m_next) {
1437 bcopy(mtod(m, caddr_t), buffer, m->m_len);
1443 len = max(len, ETHER_MIN_LEN);
1446 * See if bpf is listening on this interface, let it see the
1447 * packet before we commit it to the wire.
1449 BPF_TAP(&ie->arpcom.ac_if,
1450 __DEVOLATILE(u_char *, ie->xmit_cbuffs[ie->xmit_count]),
1453 ie->xmit_buffs[ie->xmit_count]->ie_xmit_flags =
1455 ie->xmit_buffs[ie->xmit_count]->ie_xmit_next = 0xffff;
1456 ie->xmit_buffs[ie->xmit_count]->ie_xmit_buf =
1457 MK_24(ie->iomem, ie->xmit_cbuffs[ie->xmit_count]);
1459 ie->xmit_cmds[ie->xmit_count]->com.ie_cmd_cmd = IE_CMD_XMIT;
1460 ie->xmit_cmds[ie->xmit_count]->ie_xmit_status = 0;
1461 ie->xmit_cmds[ie->xmit_count]->ie_xmit_desc =
1462 MK_16(ie->iomem, ie->xmit_buffs[ie->xmit_count]);
1464 *bptr = MK_16(ie->iomem, ie->xmit_cmds[ie->xmit_count]);
1465 bptr = &ie->xmit_cmds[ie->xmit_count]->com.ie_cmd_link;
1467 } while (ie->xmit_count < ie->ntxbufs);
1470 * If we queued up anything for transmission, send it.
1472 if (ie->xmit_count) {
1473 ie->xmit_cmds[ie->xmit_count - 1]->com.ie_cmd_cmd |=
1474 IE_CMD_LAST | IE_CMD_INTR;
1477 * By passing the command pointer as a null, we tell
1478 * command_and_wait() to pretend that this isn't an action
1479 * command. I wish I understood what was happening here.
1481 command_and_wait(ifp->if_dunit, IE_CU_START, 0, 0);
1482 ifp->if_flags |= IFF_OACTIVE;
1488 * Check to see if there's an 82586 out there.
1491 check_ie_present(int unit, caddr_t where, unsigned size)
1493 volatile struct ie_sys_conf_ptr *scp;
1494 volatile struct ie_int_sys_conf_ptr *iscp;
1495 volatile struct ie_sys_ctl_block *scb;
1501 realbase = (uintptr_t) where + size - (1 << 24);
1503 scp = (volatile struct ie_sys_conf_ptr *) (uintptr_t)
1504 (realbase + IE_SCP_ADDR);
1505 bzero((volatile char *) scp, sizeof *scp);
1508 * First we put the ISCP at the bottom of memory; this tests to make
1509 * sure that our idea of the size of memory is the same as the
1510 * controller's. This is NOT where the ISCP will be in normal
1513 iscp = (volatile struct ie_int_sys_conf_ptr *) where;
1514 bzero((volatile char *)iscp, sizeof *iscp);
1516 scb = (volatile struct ie_sys_ctl_block *) where;
1517 bzero((volatile char *)scb, sizeof *scb);
1519 scp->ie_bus_use = ie_softc[unit].bus_use; /* 8-bit or 16-bit */
1520 scp->ie_iscp_ptr = (caddr_t) (uintptr_t)
1521 ((volatile char *) iscp - (volatile char *) (uintptr_t) realbase);
1524 iscp->ie_scb_offset = MK_16(realbase, scb) + 256;
1526 (*ie_softc[unit].ie_reset_586) (unit);
1527 (*ie_softc[unit].ie_chan_attn) (unit);
1529 DELAY(100); /* wait a while... */
1531 if (iscp->ie_busy) {
1536 * Now relocate the ISCP to its real home, and reset the controller
1539 iscp = (void *) Align((caddr_t) (uintptr_t)
1540 (realbase + IE_SCP_ADDR -
1541 sizeof(struct ie_int_sys_conf_ptr)));
1542 bzero((volatile char *) iscp, sizeof *iscp); /* ignore cast-qual */
1544 scp->ie_iscp_ptr = (caddr_t) (uintptr_t)
1545 ((volatile char *) iscp - (volatile char *) (uintptr_t) realbase);
1548 iscp->ie_scb_offset = MK_16(realbase, scb);
1550 (*ie_softc[unit].ie_reset_586) (unit);
1551 (*ie_softc[unit].ie_chan_attn) (unit);
1555 if (iscp->ie_busy) {
1559 ie_softc[unit].iosize = size;
1560 ie_softc[unit].iomem = (caddr_t) (uintptr_t) realbase;
1562 ie_softc[unit].iscp = iscp;
1563 ie_softc[unit].scb = scb;
1566 * Acknowledge any interrupts we may have caused...
1568 ie_ack(scb, IE_ST_WHENCE, unit, ie_softc[unit].ie_chan_attn);
1575 * Divine the memory size of ie board UNIT.
1576 * Better hope there's nothing important hiding just below the ie card...
1579 find_ie_mem_size(int unit)
1583 ie_softc[unit].iosize = 0;
1585 for (size = 65536; size >= 8192; size -= 8192) {
1586 if (check_ie_present(unit, ie_softc[unit].iomembot, size)) {
1595 el_reset_586(int unit)
1597 outb(PORT + IE507_CTRL, EL_CTRL_RESET);
1599 outb(PORT + IE507_CTRL, EL_CTRL_NORMAL);
1604 sl_reset_586(int unit)
1606 outb(PORT + IEATT_RESET, 0);
1610 ee16_reset_586(int unit)
1612 outb(PORT + IEE16_ECTRL, IEE16_RESET_586);
1614 outb(PORT + IEE16_ECTRL, 0);
1619 el_chan_attn(int unit)
1621 outb(PORT + IE507_ATTN, 1);
1625 sl_chan_attn(int unit)
1627 outb(PORT + IEATT_ATTN, 0);
1631 ee16_chan_attn(int unit)
1633 outb(PORT + IEE16_ATTN, 0);
1637 ee16_read_eeprom(struct ie_softc *sc, int location)
1641 ectrl = inb(sc->port + IEE16_ECTRL);
1642 ectrl &= IEE16_ECTRL_MASK;
1643 ectrl |= IEE16_ECTRL_EECS;
1644 outb(sc->port + IEE16_ECTRL, ectrl);
1646 ee16_eeprom_outbits(sc, IEE16_EEPROM_READ, IEE16_EEPROM_OPSIZE1);
1647 ee16_eeprom_outbits(sc, location, IEE16_EEPROM_ADDR_SIZE);
1648 edata = ee16_eeprom_inbits(sc);
1649 ectrl = inb(sc->port + IEE16_ECTRL);
1650 ectrl &= ~(IEE16_RESET_ASIC | IEE16_ECTRL_EEDI | IEE16_ECTRL_EECS);
1651 outb(sc->port + IEE16_ECTRL, ectrl);
1652 ee16_eeprom_clock(sc, 1);
1653 ee16_eeprom_clock(sc, 0);
1658 ee16_eeprom_outbits(struct ie_softc *sc, int edata, int count)
1662 ectrl = inb(sc->port + IEE16_ECTRL);
1663 ectrl &= ~IEE16_RESET_ASIC;
1664 for (i = count - 1; i >= 0; i--) {
1665 ectrl &= ~IEE16_ECTRL_EEDI;
1666 if (edata & (1 << i)) {
1667 ectrl |= IEE16_ECTRL_EEDI;
1669 outb(sc->port + IEE16_ECTRL, ectrl);
1670 DELAY(1); /* eeprom data must be setup for 0.4 uSec */
1671 ee16_eeprom_clock(sc, 1);
1672 ee16_eeprom_clock(sc, 0);
1674 ectrl &= ~IEE16_ECTRL_EEDI;
1675 outb(sc->port + IEE16_ECTRL, ectrl);
1676 DELAY(1); /* eeprom data must be held for 0.4 uSec */
1680 ee16_eeprom_inbits(struct ie_softc *sc)
1682 int ectrl, edata, i;
1684 ectrl = inb(sc->port + IEE16_ECTRL);
1685 ectrl &= ~IEE16_RESET_ASIC;
1686 for (edata = 0, i = 0; i < 16; i++) {
1688 ee16_eeprom_clock(sc, 1);
1689 ectrl = inb(sc->port + IEE16_ECTRL);
1690 if (ectrl & IEE16_ECTRL_EEDO) {
1693 ee16_eeprom_clock(sc, 0);
1699 ee16_eeprom_clock(struct ie_softc *sc, int state)
1703 ectrl = inb(sc->port + IEE16_ECTRL);
1704 ectrl &= ~(IEE16_RESET_ASIC | IEE16_ECTRL_EESK);
1706 ectrl |= IEE16_ECTRL_EESK;
1708 outb(sc->port + IEE16_ECTRL, ectrl);
1709 DELAY(9); /* EESK must be stable for 8.38 uSec */
1712 static __inline void
1713 ee16_interrupt_enable(struct ie_softc *sc)
1716 outb(sc->port + IEE16_IRQ, sc->irq_encoded | IEE16_IRQ_ENABLE);
1721 sl_read_ether(int unit, unsigned char addr[6])
1725 for (i = 0; i < 6; i++)
1726 addr[i] = inb(PORT + i);
1739 printf("ie%d: reset\n", unit);
1740 ie_softc[unit].arpcom.ac_if.if_flags &= ~IFF_UP;
1741 ieioctl(&ie_softc[unit].arpcom.ac_if, SIOCSIFFLAGS, 0, (struct ucred *)NULL);
1744 * Stop i82586 dead in its tracks.
1746 if (command_and_wait(unit, IE_RU_ABORT | IE_CU_ABORT, 0, 0))
1747 printf("ie%d: abort commands timed out\n", unit);
1749 if (command_and_wait(unit, IE_RU_DISABLE | IE_CU_STOP, 0, 0))
1750 printf("ie%d: disable commands timed out\n", unit);
1753 if (!check_ie_present(unit, ie_softc[unit].iomembot,
1754 e_softc[unit].iosize))
1755 panic("ie disappeared!");
1758 ie_softc[unit].arpcom.ac_if.if_flags |= IFF_UP;
1759 ieioctl(&ie_softc[unit].arpcom.ac_if, SIOCSIFFLAGS, 0, (struct ucred *)NULL);
1766 * This is called if we time out.
1769 chan_attn_timeout(void *rock)
1775 * Send a command to the controller and wait for it to either
1776 * complete or be accepted, depending on the command. If the
1777 * command pointer is null, then pretend that the command is
1778 * not an action command. If the command pointer is not null,
1779 * and the command is an action command, wait for
1780 * ((volatile struct ie_cmd_common *)pcmd)->ie_cmd_status & MASK
1784 command_and_wait(int unit, int cmd, volatile void *pcmd, int mask)
1786 volatile struct ie_cmd_common *cc = pcmd;
1787 volatile int timedout = 0;
1788 struct callout_handle ch;
1790 ie_softc[unit].scb->ie_command = (u_short) cmd;
1792 if (IE_ACTION_COMMAND(cmd) && pcmd) {
1793 (*ie_softc[unit].ie_chan_attn) (unit);
1796 * According to the packet driver, the minimum timeout
1797 * should be .369 seconds, which we round up to .37.
1799 ch = timeout(chan_attn_timeout, __DEVOLATILE(int *, &timedout),
1801 /* ignore cast-qual */
1804 * Now spin-lock waiting for status. This is not a very
1805 * nice thing to do, but I haven't figured out how, or
1806 * indeed if, we can put the process waiting for action to
1807 * sleep. (We may be getting called through some other
1808 * timeout running in the kernel.)
1811 if ((cc->ie_cmd_status & mask) || timedout)
1815 untimeout(chan_attn_timeout, __DEVOLATILE(int *, &timedout), ch);
1816 /* ignore cast-qual */
1822 * Otherwise, just wait for the command to be accepted.
1824 (*ie_softc[unit].ie_chan_attn) (unit);
1826 while (ie_softc[unit].scb->ie_command); /* spin lock */
1833 * Run the time-domain reflectometer...
1836 run_tdr(int unit, volatile struct ie_tdr_cmd *cmd)
1840 cmd->com.ie_cmd_status = 0;
1841 cmd->com.ie_cmd_cmd = IE_CMD_TDR | IE_CMD_LAST;
1842 cmd->com.ie_cmd_link = 0xffff;
1843 cmd->ie_tdr_time = 0;
1845 ie_softc[unit].scb->ie_command_list = MK_16(MEM, cmd);
1846 cmd->ie_tdr_time = 0;
1848 if (command_and_wait(unit, IE_CU_START, cmd, IE_STAT_COMPL))
1851 result = cmd->ie_tdr_time;
1853 ie_ack(ie_softc[unit].scb, IE_ST_WHENCE, unit,
1854 ie_softc[unit].ie_chan_attn);
1856 if (result & IE_TDR_SUCCESS)
1859 if (result & IE_TDR_XCVR) {
1860 printf("ie%d: transceiver problem\n", unit);
1861 } else if (result & IE_TDR_OPEN) {
1862 printf("ie%d: TDR detected an open %d clocks away\n", unit,
1863 result & IE_TDR_TIME);
1864 } else if (result & IE_TDR_SHORT) {
1865 printf("ie%d: TDR detected a short %d clocks away\n", unit,
1866 result & IE_TDR_TIME);
1868 printf("ie%d: TDR returned unknown status %x\n", unit, result);
1873 start_receiver(int unit)
1877 ie_softc[unit].scb->ie_recv_list = MK_16(MEM, ie_softc[unit].rframes[0]);
1878 command_and_wait(unit, IE_RU_START, 0, 0);
1880 ie_ack(ie_softc[unit].scb, IE_ST_WHENCE, unit, ie_softc[unit].ie_chan_attn);
1886 * Here is a helper routine for iernr() and ieinit(). This sets up
1890 setup_rfa(v_caddr_t ptr, struct ie_softc * ie)
1892 volatile struct ie_recv_frame_desc *rfd = (volatile void *)ptr;
1893 volatile struct ie_recv_buf_desc *rbd;
1895 int unit = ie - &ie_softc[0];
1897 /* First lay them out */
1898 for (i = 0; i < ie->nframes; i++) {
1899 ie->rframes[i] = rfd;
1900 bzero((volatile char *) rfd, sizeof *rfd); /* ignore cast-qual */
1904 ptr = Alignvol(rfd); /* ignore cast-qual */
1906 /* Now link them together */
1907 for (i = 0; i < ie->nframes; i++) {
1908 ie->rframes[i]->ie_fd_next =
1909 MK_16(MEM, ie->rframes[(i + 1) % ie->nframes]);
1912 /* Finally, set the EOL bit on the last one. */
1913 ie->rframes[ie->nframes - 1]->ie_fd_last |= IE_FD_LAST;
1916 * Now lay out some buffers for the incoming frames. Note that we
1917 * set aside a bit of slop in each buffer, to make sure that we have
1918 * enough space to hold a single frame in every buffer.
1920 rbd = (volatile void *) ptr;
1922 for (i = 0; i < ie->nrxbufs; i++) {
1923 ie->rbuffs[i] = rbd;
1924 bzero((volatile char *)rbd, sizeof *rbd);
1925 ptr = Alignvol(ptr + sizeof *rbd);
1926 rbd->ie_rbd_length = IE_RBUF_SIZE;
1927 rbd->ie_rbd_buffer = MK_24(MEM, ptr);
1928 ie->cbuffs[i] = (volatile void *) ptr;
1929 ptr += IE_RBUF_SIZE;
1930 rbd = (volatile void *) ptr;
1933 /* Now link them together */
1934 for (i = 0; i < ie->nrxbufs; i++) {
1935 ie->rbuffs[i]->ie_rbd_next =
1936 MK_16(MEM, ie->rbuffs[(i + 1) % ie->nrxbufs]);
1939 /* Tag EOF on the last one */
1940 ie->rbuffs[ie->nrxbufs - 1]->ie_rbd_length |= IE_RBD_LAST;
1943 * We use the head and tail pointers on receive to keep track of the
1944 * order in which RFDs and RBDs are used.
1947 ie->rftail = ie->nframes - 1;
1949 ie->rbtail = ie->nrxbufs - 1;
1951 ie->scb->ie_recv_list = MK_16(MEM, ie->rframes[0]);
1952 ie->rframes[0]->ie_fd_buf_desc = MK_16(MEM, ie->rbuffs[0]);
1954 ptr = Alignvol(ptr);
1959 * Run the multicast setup command.
1963 mc_setup(int unit, v_caddr_t ptr,
1964 volatile struct ie_sys_ctl_block * scb)
1966 struct ie_softc *ie = &ie_softc[unit];
1967 volatile struct ie_mcast_cmd *cmd = (volatile void *) ptr;
1969 cmd->com.ie_cmd_status = 0;
1970 cmd->com.ie_cmd_cmd = IE_CMD_MCAST | IE_CMD_LAST;
1971 cmd->com.ie_cmd_link = 0xffff;
1973 /* ignore cast-qual */
1974 bcopy((v_caddr_t) ie->mcast_addrs, (v_caddr_t) cmd->ie_mcast_addrs,
1975 ie->mcast_count * sizeof *ie->mcast_addrs);
1977 cmd->ie_mcast_bytes = ie->mcast_count * 6; /* grrr... */
1979 scb->ie_command_list = MK_16(MEM, cmd);
1980 if (command_and_wait(unit, IE_CU_START, cmd, IE_STAT_COMPL)
1981 || !(cmd->com.ie_cmd_status & IE_STAT_OK)) {
1982 printf("ie%d: multicast address setup command failed\n", unit);
1989 * This routine takes the environment generated by check_ie_present()
1990 * and adds to it all the other structures we need to operate the adapter.
1991 * This includes executing the CONFIGURE, IA-SETUP, and MC-SETUP commands,
1992 * starting the receiver unit, and clearing interrupts.
1994 * THIS ROUTINE MUST BE CALLED AT splimp() OR HIGHER.
2000 struct ie_softc *ie = xsc;
2001 volatile struct ie_sys_ctl_block *scb = ie->scb;
2004 int unit = ie->unit;
2006 ptr = Alignvol((volatile char *) scb + sizeof *scb);
2009 * Send the configure command first.
2012 volatile struct ie_config_cmd *cmd = (volatile void *) ptr;
2014 ie_setup_config(cmd, ie->promisc,
2015 ie->hard_type == IE_STARLAN10);
2016 cmd->com.ie_cmd_status = 0;
2017 cmd->com.ie_cmd_cmd = IE_CMD_CONFIG | IE_CMD_LAST;
2018 cmd->com.ie_cmd_link = 0xffff;
2020 scb->ie_command_list = MK_16(MEM, cmd);
2022 if (command_and_wait(unit, IE_CU_START, cmd, IE_STAT_COMPL)
2023 || !(cmd->com.ie_cmd_status & IE_STAT_OK)) {
2024 printf("ie%d: configure command failed\n", unit);
2029 * Now send the Individual Address Setup command.
2032 volatile struct ie_iasetup_cmd *cmd = (volatile void *) ptr;
2034 cmd->com.ie_cmd_status = 0;
2035 cmd->com.ie_cmd_cmd = IE_CMD_IASETUP | IE_CMD_LAST;
2036 cmd->com.ie_cmd_link = 0xffff;
2038 bcopy((volatile char *)ie_softc[unit].arpcom.ac_enaddr,
2039 (volatile char *)&cmd->ie_address, sizeof cmd->ie_address);
2040 scb->ie_command_list = MK_16(MEM, cmd);
2041 if (command_and_wait(unit, IE_CU_START, cmd, IE_STAT_COMPL)
2042 || !(cmd->com.ie_cmd_status & IE_STAT_OK)) {
2043 printf("ie%d: individual address "
2044 "setup command failed\n", unit);
2050 * Now run the time-domain reflectometer.
2052 run_tdr(unit, (volatile void *) ptr);
2055 * Acknowledge any interrupts we have generated thus far.
2057 ie_ack(ie->scb, IE_ST_WHENCE, unit, ie->ie_chan_attn);
2062 ptr = setup_rfa(ptr, ie);
2065 * Finally, the transmit command and buffer are the last little bit
2069 /* transmit command buffers */
2070 for (i = 0; i < ie->ntxbufs; i++) {
2071 ie->xmit_cmds[i] = (volatile void *) ptr;
2072 ptr += sizeof *ie->xmit_cmds[i];
2073 ptr = Alignvol(ptr);
2074 ie->xmit_buffs[i] = (volatile void *)ptr;
2075 ptr += sizeof *ie->xmit_buffs[i];
2076 ptr = Alignvol(ptr);
2079 /* transmit buffers */
2080 for (i = 0; i < ie->ntxbufs - 1; i++) {
2081 ie->xmit_cbuffs[i] = (volatile void *)ptr;
2083 ptr = Alignvol(ptr);
2085 ie->xmit_cbuffs[ie->ntxbufs - 1] = (volatile void *) ptr;
2087 for (i = 1; i < ie->ntxbufs; i++) {
2088 bzero((v_caddr_t) ie->xmit_cmds[i], sizeof *ie->xmit_cmds[i]);
2089 bzero((v_caddr_t) ie->xmit_buffs[i], sizeof *ie->xmit_buffs[i]);
2093 * This must be coordinated with iestart() and ietint().
2095 ie->xmit_cmds[0]->ie_xmit_status = IE_STAT_COMPL;
2097 /* take the ee16 out of loopback */
2098 if (ie->hard_type == IE_EE16) {
2099 u_int8_t bart_config;
2101 bart_config = inb(PORT + IEE16_CONFIG);
2102 bart_config &= ~IEE16_BART_LOOPBACK;
2103 /* inb doesn't get bit! */
2104 bart_config |= IEE16_BART_MCS16_TEST;
2105 outb(PORT + IEE16_CONFIG, bart_config);
2106 ee16_interrupt_enable(ie);
2107 ee16_chan_attn(unit);
2109 ie->arpcom.ac_if.if_flags |= IFF_RUNNING; /* tell higher levels
2111 start_receiver(unit);
2119 command_and_wait(unit, IE_RU_DISABLE, 0, 0);
2123 ieioctl(struct ifnet *ifp, u_long command, caddr_t data, struct ucred *cr)
2133 error = ether_ioctl(ifp, command, data);
2138 * Note that this device doesn't have an "all multicast"
2139 * mode, so we must turn on promiscuous mode and do the
2140 * filtering manually.
2142 if ((ifp->if_flags & IFF_UP) == 0 &&
2143 (ifp->if_flags & IFF_RUNNING)) {
2144 ifp->if_flags &= ~IFF_RUNNING;
2145 ie_stop(ifp->if_dunit);
2146 } else if ((ifp->if_flags & IFF_UP) &&
2147 (ifp->if_flags & IFF_RUNNING) == 0) {
2148 ie_softc[ifp->if_dunit].promisc =
2149 ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI);
2150 ieinit(ifp->if_softc);
2151 } else if (ie_softc[ifp->if_dunit].promisc ^
2152 (ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI))) {
2153 ie_softc[ifp->if_dunit].promisc =
2154 ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI);
2155 ieinit(ifp->if_softc);
2162 * Update multicast listeners
2164 /* reset multicast filtering */
2165 ie_mc_reset(ifp->if_dunit);
2178 ie_mc_reset(int unit)
2180 struct ie_softc *ie = &ie_softc[unit];
2181 struct ifmultiaddr *ifma;
2184 * Step through the list of addresses.
2186 ie->mcast_count = 0;
2187 for (ifma = ie->arpcom.ac_if.if_multiaddrs.lh_first; ifma;
2188 ifma = ifma->ifma_link.le_next) {
2189 if (ifma->ifma_addr->sa_family != AF_LINK)
2192 /* XXX - this is broken... */
2193 if (ie->mcast_count >= MAXMCAST) {
2194 ie->arpcom.ac_if.if_flags |= IFF_ALLMULTI;
2195 ieioctl(&ie->arpcom.ac_if, SIOCSIFFLAGS, (void *) 0,
2196 (struct ucred *)NULL);
2199 bcopy(LLADDR((struct sockaddr_dl *) ifma->ifma_addr),
2200 &(ie->mcast_addrs[ie->mcast_count]), 6);
2205 ie->want_mcsetup = 1;
2211 print_rbd(volatile struct ie_recv_buf_desc * rbd)
2213 printf("RBD at %p:\n"
2214 "actual %04x, next %04x, buffer %p\n"
2215 "length %04x, mbz %04x\n",
2216 (volatile void *) rbd,
2217 rbd->ie_rbd_actual, rbd->ie_rbd_next,
2218 (void *) rbd->ie_rbd_buffer,
2219 rbd->ie_rbd_length, rbd->mbz);