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 1.6 2004/01/06 03:17:23 dillon 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);
175 static void iestart(struct ifnet * ifp);
177 static void el_reset_586(int unit);
178 static void el_chan_attn(int unit);
180 static void sl_reset_586(int unit);
181 static void sl_chan_attn(int unit);
183 static void ee16_reset_586(int unit);
184 static void ee16_chan_attn(int unit);
185 static __inline void ee16_interrupt_enable(struct ie_softc * ie);
186 static void ee16_eeprom_outbits(struct ie_softc * ie, int edata, int cnt);
187 static void ee16_eeprom_clock(struct ie_softc * ie, int state);
188 static u_short ee16_read_eeprom(struct ie_softc * ie, int location);
189 static int ee16_eeprom_inbits(struct ie_softc * ie);
190 static void ee16_shutdown(void *sc, int howto);
192 static void iereset(int unit);
193 static void ie_readframe(int unit, struct ie_softc * ie, int bufno);
194 static void ie_drop_packet_buffer(int unit, struct ie_softc * ie);
195 static void sl_read_ether(int unit, unsigned char addr[6]);
196 static void find_ie_mem_size(int unit);
197 static void chan_attn_timeout(void *rock);
198 static int command_and_wait(int unit, int command,
199 void volatile * pcmd, int);
200 static void run_tdr(int unit, volatile struct ie_tdr_cmd * cmd);
201 static int ierint(int unit, struct ie_softc * ie);
202 static int ietint(int unit, struct ie_softc * ie);
203 static int iernr(int unit, struct ie_softc * ie);
204 static void start_receiver(int unit);
205 static __inline int ieget(int, struct ie_softc *, struct mbuf **,
206 struct ether_header *);
207 static v_caddr_t setup_rfa(v_caddr_t ptr, struct ie_softc * ie);
208 static int mc_setup(int, v_caddr_t, volatile struct ie_sys_ctl_block *);
209 static void ie_mc_reset(int unit);
212 static void print_rbd(volatile struct ie_recv_buf_desc * rbd);
214 static int in_ierint = 0;
215 static int in_ietint = 0;
220 * This tells the autoconf code how to set us up.
222 struct isa_driver iedriver = {
223 ieprobe, ieattach, "ie",
236 static const char *ie_hardware_names[] = {
247 sizeof(iscp) == 1+1+2+4 == 8
248 sizeof(scb) == 2+2+2+2+2+2+2+2 == 16
249 NFRAMES * sizeof(rfd) == NFRAMES*(2+2+2+2+6+6+2+2) == NFRAMES*24 == 384
250 sizeof(xmit_cmd) == 2+2+2+2+6+2 == 18
251 sizeof(transmit buffer) == 1512
252 sizeof(transmit buffer desc) == 8
256 NRXBUFS * sizeof(rbd) == NRXBUFS*(2+2+4+2+2) == NRXBUFS*12
257 NRXBUFS * IE_RBUF_SIZE == NRXBUFS*256
259 NRXBUFS should be (16384 - 1946) / (256 + 12) == 14438 / 268 == 53
261 With NRXBUFS == 48, this leaves us 1574 bytes for another command or
262 more buffers. Another transmit command would be 18+8+1512 == 1538
265 Obviously all these would have to be reduced for smaller memory sizes.
266 With a larger memory, it would be possible to roughly double the number of
267 both transmit and receive buffers.
270 #define NFRAMES 8 /* number of receive frames */
271 #define NRXBUFS 48 /* number of buffers to allocate */
272 #define IE_RBUF_SIZE 256 /* size of each buffer, MUST BE POWER OF TWO */
273 #define NTXBUFS 2 /* number of transmit commands */
274 #define IE_TBUF_SIZE ETHER_MAX_LEN /* size of transmit buffer */
277 * Ethernet status, per interface.
279 static struct ie_softc {
280 struct arpcom arpcom;
281 void (*ie_reset_586) (int);
282 void (*ie_chan_attn) (int);
283 enum ie_hardware hard_type;
287 u_short port; /* i/o base address for this interface */
288 caddr_t iomem; /* memory size */
289 caddr_t iomembot; /* memory base address */
291 int bus_use; /* 0 means 16bit, 1 means 8 bit adapter */
298 volatile struct ie_int_sys_conf_ptr *iscp;
299 volatile struct ie_sys_ctl_block *scb;
300 volatile struct ie_recv_frame_desc **rframes; /* nframes worth */
301 volatile struct ie_recv_buf_desc **rbuffs; /* nrxbufs worth */
302 volatile u_char **cbuffs; /* nrxbufs worth */
303 int rfhead, rftail, rbhead, rbtail;
305 volatile struct ie_xmit_cmd **xmit_cmds; /* ntxbufs worth */
306 volatile struct ie_xmit_buf **xmit_buffs; /* ntxbufs worth */
307 volatile u_char **xmit_cbuffs; /* ntxbufs worth */
310 struct ie_en_addr mcast_addrs[MAXMCAST + 1];
313 u_short irq_encoded; /* encoded interrupt on IEE16 */
316 #define MK_24(base, ptr) ((caddr_t)((uintptr_t)ptr - (uintptr_t)base))
317 #define MK_16(base, ptr) ((u_short)(uintptr_t)MK_24(base, ptr))
319 #define PORT ie_softc[unit].port
320 #define MEM ie_softc[unit].iomem
323 ieprobe(struct isa_device *dvp)
333 ret = ee16_probe(dvp);
339 sl_probe(struct isa_device *dvp)
341 int unit = dvp->id_unit;
344 ie_softc[unit].port = dvp->id_iobase;
345 ie_softc[unit].iomembot = dvp->id_maddr;
346 ie_softc[unit].iomem = 0;
347 ie_softc[unit].bus_use = 0;
349 c = inb(PORT + IEATT_REVISION);
350 switch (SL_BOARD(c)) {
352 ie_softc[unit].hard_type = IE_STARLAN10;
353 ie_softc[unit].ie_reset_586 = sl_reset_586;
354 ie_softc[unit].ie_chan_attn = sl_chan_attn;
357 ie_softc[unit].hard_type = IE_EN100;
358 ie_softc[unit].ie_reset_586 = sl_reset_586;
359 ie_softc[unit].ie_chan_attn = sl_chan_attn;
362 ie_softc[unit].hard_type = IE_SLFIBER;
363 ie_softc[unit].ie_reset_586 = sl_reset_586;
364 ie_softc[unit].ie_chan_attn = sl_chan_attn;
368 * Anything else is not recognized or cannot be used.
374 ie_softc[unit].hard_vers = SL_REV(c);
377 * Divine memory size on-board the card. Ususally 16k.
379 find_ie_mem_size(unit);
381 if (!ie_softc[unit].iosize) {
384 dvp->id_msize = ie_softc[unit].iosize;
386 switch (ie_softc[unit].hard_type) {
390 sl_read_ether(unit, ie_softc[unit].arpcom.ac_enaddr);
395 printf("ie%d: unknown AT&T board type code %d\n", unit,
396 ie_softc[unit].hard_type);
405 el_probe(struct isa_device *dvp)
407 struct ie_softc *sc = &ie_softc[dvp->id_unit];
410 u_char signature[] = "*3COM*";
411 int unit = dvp->id_unit;
414 sc->port = dvp->id_iobase;
415 sc->iomembot = dvp->id_maddr;
418 /* Need this for part of the probe. */
419 sc->ie_reset_586 = el_reset_586;
420 sc->ie_chan_attn = el_chan_attn;
422 /* Reset and put card in CONFIG state without changing address. */
424 outb(ELINK_ID_PORT, 0x00);
425 elink_idseq(ELINK_507_POLY);
426 elink_idseq(ELINK_507_POLY);
427 outb(ELINK_ID_PORT, 0xff);
429 c = inb(PORT + IE507_MADDR);
432 printf("ie%d: can't map 3C507 RAM in high memory\n", unit);
436 /* go to RUN state */
437 outb(ELINK_ID_PORT, 0x00);
438 elink_idseq(ELINK_507_POLY);
439 outb(ELINK_ID_PORT, 0x00);
441 outb(PORT + IE507_CTRL, EL_CTRL_NRST);
443 for (i = 0; i < 6; i++)
444 if (inb(PORT + i) != signature[i])
447 c = inb(PORT + IE507_IRQ) & 0x0f;
449 if (dvp->id_irq != (1 << c)) {
450 printf("ie%d: kernel configured irq %d "
451 "doesn't match board configured irq %d\n",
452 unit, ffs(dvp->id_irq) - 1, c);
455 c = (inb(PORT + IE507_MADDR) & 0x1c) + 0xc0;
457 if (kvtop(dvp->id_maddr) != ((int) c << 12)) {
458 printf("ie%d: kernel configured maddr %lx "
459 "doesn't match board configured maddr %x\n",
460 unit, kvtop(dvp->id_maddr), (int) c << 12);
463 outb(PORT + IE507_CTRL, EL_CTRL_NORMAL);
465 sc->hard_type = IE_3C507;
466 sc->hard_vers = 0; /* 3C507 has no version number. */
469 * Divine memory size on-board the card.
471 find_ie_mem_size(unit);
474 printf("ie%d: can't find shared memory\n", unit);
475 outb(PORT + IE507_CTRL, EL_CTRL_NRST);
479 dvp->id_msize = sc->iosize;
480 else if (dvp->id_msize != sc->iosize) {
481 printf("ie%d: kernel configured msize %d "
482 "doesn't match board configured msize %d\n",
483 unit, dvp->id_msize, sc->iosize);
484 outb(PORT + IE507_CTRL, EL_CTRL_NRST);
487 sl_read_ether(unit, ie_softc[unit].arpcom.ac_enaddr);
489 /* Clear the interrupt latch just in case. */
490 outb(PORT + IE507_ICTRL, 1);
497 ni_probe(struct isa_device *dvp)
499 int unit = dvp->id_unit;
502 ie_softc[unit].port = dvp->id_iobase;
503 ie_softc[unit].iomembot = dvp->id_maddr;
504 ie_softc[unit].iomem = 0;
505 ie_softc[unit].bus_use = 1;
507 boardtype = inb(PORT + IEATT_REVISION);
508 c = inb(PORT + IEATT_REVISION + 1);
509 boardtype = boardtype + (c << 8);
511 case 0x5500: /* This is the magic cookie for the NI5210 */
512 ie_softc[unit].hard_type = IE_NI5210;
513 ie_softc[unit].ie_reset_586 = sl_reset_586;
514 ie_softc[unit].ie_chan_attn = sl_chan_attn;
518 * Anything else is not recognized or cannot be used.
524 ie_softc[unit].hard_vers = 0;
527 * Divine memory size on-board the card. Either 8 or 16k.
529 find_ie_mem_size(unit);
531 if (!ie_softc[unit].iosize) {
535 dvp->id_msize = ie_softc[unit].iosize;
536 else if (dvp->id_msize != ie_softc[unit].iosize) {
537 printf("ie%d: kernel configured msize %d "
538 "doesn't match board configured msize %d\n",
539 unit, dvp->id_msize, ie_softc[unit].iosize);
542 sl_read_ether(unit, ie_softc[unit].arpcom.ac_enaddr);
550 ee16_shutdown(void *sc, int howto)
552 struct ie_softc *ie = (struct ie_softc *)sc;
553 int unit = ie - &ie_softc[0];
555 ee16_reset_586(unit);
556 outb(PORT + IEE16_ECTRL, IEE16_RESET_ASIC);
557 outb(PORT + IEE16_ECTRL, 0);
561 /* Taken almost exactly from Rod's if_ix.c. */
564 ee16_probe(struct isa_device *dvp)
566 struct ie_softc *sc = &ie_softc[dvp->id_unit];
569 int unit = dvp->id_unit;
570 u_short board_id, id_var1, id_var2, checksum = 0;
571 u_short eaddrtemp, irq;
572 u_short pg, adjust, decode, edecode;
576 short irq_translate[] = {0, IRQ9, IRQ3, IRQ4, IRQ5, IRQ10, IRQ11, 0};
577 char irq_encode[] = {0, 0, 0, 2, 3, 4, 0, 0, 0, 1, 5, 6, 0, 0, 0, 0};
579 /* Need this for part of the probe. */
580 sc->ie_reset_586 = ee16_reset_586;
581 sc->ie_chan_attn = ee16_chan_attn;
583 /* unsure if this is necessary */
586 /* reset any ee16 at the current iobase */
587 outb(dvp->id_iobase + IEE16_ECTRL, IEE16_RESET_ASIC);
588 outb(dvp->id_iobase + IEE16_ECTRL, 0);
591 /* now look for ee16. */
592 board_id = id_var1 = id_var2 = 0;
593 for (i = 0; i < 4; i++) {
594 id_var1 = inb(dvp->id_iobase + IEE16_ID_PORT);
595 id_var2 = ((id_var1 & 0x03) << 2);
596 board_id |= ((id_var1 >> 4) << id_var2);
599 if (board_id != IEE16_ID) {
601 printf("ie%d: unknown board_id: %x\n", unit, board_id);
604 /* need sc->port for ee16_read_eeprom */
605 sc->port = dvp->id_iobase;
606 sc->hard_type = IE_EE16;
609 * The shared RAM location on the EE16 is encoded into bits 3-7 of
610 * EEPROM location 6. We zero the upper byte, and shift the 5 bits
611 * right 3. The resulting number tells us the RAM location.
612 * Because the EE16 supports either 16k or 32k of shared RAM, we
613 * only worry about the 32k locations.
615 * NOTE: if a 64k EE16 exists, it should be added to this switch. then
616 * the ia->ia_msize would need to be set per case statement.
618 * value msize location ===== ===== ======== 0x03 0x8000
619 * 0xCC000 0x06 0x8000 0xD0000 0x0C 0x8000 0xD4000 0x18
625 i = (ee16_read_eeprom(sc, 6) & 0x00ff) >> 3;
643 dvp->id_msize = 0x8000;
644 if (kvtop(dvp->id_maddr) != bd_maddr) {
645 printf("ie%d: kernel configured maddr %lx "
646 "doesn't match board configured maddr %lx\n",
647 unit, kvtop(dvp->id_maddr), bd_maddr);
649 sc->iomembot = dvp->id_maddr;
650 sc->iomem = 0; /* XXX some probes set this and some don't */
651 sc->iosize = dvp->id_msize;
653 /* need to put the 586 in RESET while we access the eeprom. */
654 outb(PORT + IEE16_ECTRL, IEE16_RESET_586);
656 /* read the eeprom and checksum it, should == IEE16_ID */
657 for (i = 0; i < 0x40; i++)
658 checksum += ee16_read_eeprom(sc, i);
660 if (checksum != IEE16_ID) {
661 printf("ie%d: invalid eeprom checksum: %x\n", unit, checksum);
665 * Size and test the memory on the board. The size of the memory
666 * can be one of 16k, 32k, 48k or 64k. It can be located in the
667 * address range 0xC0000 to 0xEFFFF on 16k boundaries.
669 * If the size does not match the passed in memory allocation size
670 * issue a warning, but continue with the minimum of the two sizes.
673 switch (dvp->id_msize) {
675 case 32768: /* XXX Only support 32k and 64k right now */
680 printf("ie%d: mapped memory size %d not supported\n", unit,
683 break; /* NOTREACHED */
686 if ((kvtop(dvp->id_maddr) < 0xC0000) ||
687 (kvtop(dvp->id_maddr) + sc->iosize > 0xF0000)) {
688 printf("ie%d: mapped memory location %p out of range\n", unit,
689 (void *)dvp->id_maddr);
692 pg = (kvtop(dvp->id_maddr) & 0x3C000) >> 14;
693 adjust = IEE16_MCTRL_FMCS16 | (pg & 0x3) << 2;
694 decode = ((1 << (sc->iosize / 16384)) - 1) << pg;
695 edecode = ((~decode >> 4) & 0xF0) | (decode >> 8);
697 /* ZZZ This should be checked against eeprom location 6, low byte */
698 outb(PORT + IEE16_MEMDEC, decode & 0xFF);
699 /* ZZZ This should be checked against eeprom location 1, low byte */
700 outb(PORT + IEE16_MCTRL, adjust);
701 /* ZZZ Now if I could find this one I would have it made */
702 outb(PORT + IEE16_MPCTRL, (~decode & 0xFF));
703 /* ZZZ I think this is location 6, high byte */
704 outb(PORT + IEE16_MECTRL, edecode); /* XXX disable Exxx */
706 (void) kvtop(dvp->id_maddr);
709 * first prime the stupid bart DRAM controller so that it works,
710 * then zero out all of memory.
712 bzero(sc->iomembot, 32);
713 bzero(sc->iomembot, sc->iosize);
716 * Get the encoded interrupt number from the EEPROM, check it
717 * against the passed in IRQ. Issue a warning if they do not match.
718 * Always use the passed in IRQ, not the one in the EEPROM.
720 irq = ee16_read_eeprom(sc, IEE16_EEPROM_CONFIG1);
721 irq = (irq & IEE16_EEPROM_IRQ) >> IEE16_EEPROM_IRQ_SHIFT;
722 irq = irq_translate[irq];
723 if (dvp->id_irq > 0) {
724 if (irq != dvp->id_irq) {
725 printf("ie%d: WARNING: board configured "
726 "at irq %u, using %u\n",
727 dvp->id_unit, dvp->id_irq, irq);
733 sc->irq_encoded = irq_encode[ffs(irq) - 1];
736 * Get the hardware ethernet address from the EEPROM and save it in
737 * the softc for use by the 586 setup code.
739 eaddrtemp = ee16_read_eeprom(sc, IEE16_EEPROM_ENET_HIGH);
740 sc->arpcom.ac_enaddr[1] = eaddrtemp & 0xFF;
741 sc->arpcom.ac_enaddr[0] = eaddrtemp >> 8;
742 eaddrtemp = ee16_read_eeprom(sc, IEE16_EEPROM_ENET_MID);
743 sc->arpcom.ac_enaddr[3] = eaddrtemp & 0xFF;
744 sc->arpcom.ac_enaddr[2] = eaddrtemp >> 8;
745 eaddrtemp = ee16_read_eeprom(sc, IEE16_EEPROM_ENET_LOW);
746 sc->arpcom.ac_enaddr[5] = eaddrtemp & 0xFF;
747 sc->arpcom.ac_enaddr[4] = eaddrtemp >> 8;
749 /* disable the board interrupts */
750 outb(PORT + IEE16_IRQ, sc->irq_encoded);
752 /* enable loopback to keep bad packets off the wire */
753 if (sc->hard_type == IE_EE16) {
754 bart_config = inb(PORT + IEE16_CONFIG);
755 bart_config |= IEE16_BART_LOOPBACK;
756 bart_config |= IEE16_BART_MCS16_TEST;/* inb doesn't get bit! */
757 outb(PORT + IEE16_CONFIG, bart_config);
758 bart_config = inb(PORT + IEE16_CONFIG);
760 /* take the board out of reset state */
761 outb(PORT + IEE16_ECTRL, 0);
764 if (!check_ie_present(unit, dvp->id_maddr, sc->iosize))
767 return (16); /* return the number of I/O ports */
771 * Taken almost exactly from Bill's if_is.c, then modified beyond recognition.
774 ieattach(struct isa_device *dvp)
777 int unit = dvp->id_unit;
778 struct ie_softc *ie = &ie_softc[unit];
779 struct ifnet *ifp = &ie->arpcom.ac_if;
782 dvp->id_ointr = ieintr;
785 * based on the amount of memory we have, allocate our tx and rx
788 factor = dvp->id_msize / 16384;
789 ie->nframes = factor * NFRAMES;
790 ie->nrxbufs = factor * NRXBUFS;
791 ie->ntxbufs = factor * NTXBUFS;
794 * Since all of these guys are arrays of pointers, allocate as one
795 * big chunk and dole out accordingly.
797 allocsize = sizeof(void *) * (ie->nframes
799 + (ie->ntxbufs * 3));
800 ie->rframes = (volatile struct ie_recv_frame_desc **) malloc(allocsize,
803 if (ie->rframes == NULL)
806 (volatile struct ie_recv_buf_desc **)&ie->rframes[ie->nframes];
807 ie->cbuffs = (volatile u_char **)&ie->rbuffs[ie->nrxbufs];
809 (volatile struct ie_xmit_cmd **)&ie->cbuffs[ie->nrxbufs];
811 (volatile struct ie_xmit_buf **)&ie->xmit_cmds[ie->ntxbufs];
812 ie->xmit_cbuffs = (volatile u_char **)&ie->xmit_buffs[ie->ntxbufs];
815 if_initname(ifp, iedriver.name, unit);
816 ifp->if_mtu = ETHERMTU;
817 printf("ie%d: <%s R%d> address %6D\n", unit,
818 ie_hardware_names[ie->hard_type],
820 ie->arpcom.ac_enaddr, ":");
822 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
823 ifp->if_output = ether_output;
824 ifp->if_start = iestart;
825 ifp->if_ioctl = ieioctl;
826 ifp->if_init = ieinit;
827 ifp->if_type = IFT_ETHER;
830 ifp->if_snd.ifq_maxlen = IFQ_MAXLEN;
832 if (ie->hard_type == IE_EE16)
833 EVENTHANDLER_REGISTER(shutdown_post_sync, ee16_shutdown,
834 ie, SHUTDOWN_PRI_DEFAULT);
836 ether_ifattach(ifp, ETHER_BPF_SUPPORTED);
841 * What to do upon receipt of an interrupt.
846 struct ie_softc *ie = &ie_softc[unit];
849 /* Clear the interrupt latch on the 3C507. */
850 if (ie->hard_type == IE_3C507
851 && (inb(PORT + IE507_CTRL) & EL_CTRL_INTL))
852 outb(PORT + IE507_ICTRL, 1);
854 /* disable interrupts on the EE16. */
855 if (ie->hard_type == IE_EE16)
856 outb(PORT + IEE16_IRQ, ie->irq_encoded);
858 status = ie->scb->ie_status;
862 /* Don't ack interrupts which we didn't receive */
863 ie_ack(ie->scb, IE_ST_WHENCE & status, unit, ie->ie_chan_attn);
865 if (status & (IE_ST_RECV | IE_ST_RNR)) {
868 if (ie_debug & IED_RINT)
869 printf("ie%d: rint\n", unit);
876 if (status & IE_ST_DONE) {
879 if (ie_debug & IED_TINT)
880 printf("ie%d: tint\n", unit);
887 if (status & IE_ST_RNR) {
889 if (ie_debug & IED_RNR)
890 printf("ie%d: rnr\n", unit);
895 if ((status & IE_ST_ALLDONE)
896 && (ie_debug & IED_CNA))
897 printf("ie%d: cna\n", unit);
900 if ((status = ie->scb->ie_status) & IE_ST_WHENCE)
903 /* Clear the interrupt latch on the 3C507. */
904 if (ie->hard_type == IE_3C507)
905 outb(PORT + IE507_ICTRL, 1);
907 /* enable interrupts on the EE16. */
908 if (ie->hard_type == IE_EE16)
909 outb(PORT + IEE16_IRQ, ie->irq_encoded | IEE16_IRQ_ENABLE);
914 * Process a received-frame interrupt.
917 ierint(int unit, struct ie_softc *ie)
920 static int timesthru = 1024;
924 status = ie->rframes[i]->ie_fd_status;
926 if ((status & IE_FD_COMPLETE) && (status & IE_FD_OK)) {
927 ie->arpcom.ac_if.if_ipackets++;
929 ie->arpcom.ac_if.if_ierrors +=
930 ie->scb->ie_err_crc +
931 ie->scb->ie_err_align +
932 ie->scb->ie_err_resource +
933 ie->scb->ie_err_overrun;
934 ie->scb->ie_err_crc = 0;
935 ie->scb->ie_err_align = 0;
936 ie->scb->ie_err_resource = 0;
937 ie->scb->ie_err_overrun = 0;
940 ie_readframe(unit, ie, i);
942 if (status & IE_FD_RNR) {
943 if (!(ie->scb->ie_status & IE_RU_READY)) {
944 ie->rframes[0]->ie_fd_next =
945 MK_16(MEM, ie->rbuffs[0]);
946 ie->scb->ie_recv_list =
947 MK_16(MEM, ie->rframes[0]);
948 command_and_wait(unit, IE_RU_START,
954 i = (i + 1) % ie->nframes;
960 * Process a command-complete interrupt. These are only generated by
961 * the transmission of frames. This routine is deceptively simple, since
962 * most of the real work is done by iestart().
965 ietint(int unit, struct ie_softc *ie)
970 ie->arpcom.ac_if.if_timer = 0;
971 ie->arpcom.ac_if.if_flags &= ~IFF_OACTIVE;
973 for (i = 0; i < ie->xmit_count; i++) {
974 status = ie->xmit_cmds[i]->ie_xmit_status;
976 if (status & IE_XS_LATECOLL) {
977 printf("ie%d: late collision\n", unit);
978 ie->arpcom.ac_if.if_collisions++;
979 ie->arpcom.ac_if.if_oerrors++;
980 } else if (status & IE_XS_NOCARRIER) {
981 printf("ie%d: no carrier\n", unit);
982 ie->arpcom.ac_if.if_oerrors++;
983 } else if (status & IE_XS_LOSTCTS) {
984 printf("ie%d: lost CTS\n", unit);
985 ie->arpcom.ac_if.if_oerrors++;
986 } else if (status & IE_XS_UNDERRUN) {
987 printf("ie%d: DMA underrun\n", unit);
988 ie->arpcom.ac_if.if_oerrors++;
989 } else if (status & IE_XS_EXCMAX) {
990 printf("ie%d: too many collisions\n", unit);
991 ie->arpcom.ac_if.if_collisions += 16;
992 ie->arpcom.ac_if.if_oerrors++;
994 ie->arpcom.ac_if.if_opackets++;
995 ie->arpcom.ac_if.if_collisions += status & IE_XS_MAXCOLL;
1001 * If multicast addresses were added or deleted while we were
1002 * transmitting, ie_mc_reset() set the want_mcsetup flag indicating
1003 * that we should do it.
1005 if (ie->want_mcsetup) {
1006 mc_setup(unit, (v_caddr_t) ie->xmit_cbuffs[0], ie->scb);
1007 ie->want_mcsetup = 0;
1009 /* Wish I knew why this seems to be necessary... */
1010 ie->xmit_cmds[0]->ie_xmit_status |= IE_STAT_COMPL;
1012 iestart(&ie->arpcom.ac_if);
1013 return (0); /* shouldn't be necessary */
1017 * Process a receiver-not-ready interrupt. I believe that we get these
1018 * when there aren't enough buffers to go around. For now (FIXME), we
1019 * just restart the receiver, and hope everything's ok.
1022 iernr(int unit, struct ie_softc *ie)
1025 setup_rfa((v_caddr_t) ie->rframes[0], ie);
1027 ie->scb->ie_recv_list = MK_16(MEM, ie_softc[unit].rframes[0]);
1028 command_and_wait(unit, IE_RU_START, 0, 0);
1030 /* This doesn't work either, but it doesn't hang either. */
1031 command_and_wait(unit, IE_RU_DISABLE, 0, 0); /* just in case */
1032 setup_rfa((v_caddr_t) ie->rframes[0], ie); /* ignore cast-qual */
1034 ie->scb->ie_recv_list = MK_16(MEM, ie_softc[unit].rframes[0]);
1035 command_and_wait(unit, IE_RU_START, 0, 0); /* was ENABLE */
1038 ie_ack(ie->scb, IE_ST_WHENCE, unit, ie->ie_chan_attn);
1040 ie->arpcom.ac_if.if_ierrors++;
1045 * Compare two Ether/802 addresses for equality, inlined and
1046 * unrolled for speed. I'd love to have an inline assembler
1047 * version of this...
1050 ether_equal(u_char * one, u_char * two)
1052 if (one[0] != two[0])
1054 if (one[1] != two[1])
1056 if (one[2] != two[2])
1058 if (one[3] != two[3])
1060 if (one[4] != two[4])
1062 if (one[5] != two[5])
1068 * Determine quickly whether we should bother reading in this packet.
1069 * This depends on whether BPF and/or bridging is enabled, whether we
1070 * are receiving multicast address, and whether promiscuous mode is enabled.
1071 * We assume that if IFF_PROMISC is set, then *somebody* wants to see
1072 * all incoming packets.
1075 check_eh(struct ie_softc *ie, struct ether_header *eh)
1077 /* Optimize the common case: normal operation. We've received
1078 either a unicast with our dest or a multicast packet. */
1079 if (ie->promisc == 0) {
1082 /* If not multicast, it's definitely for us */
1083 if ((eh->ether_dhost[0] & 1) == 0)
1086 /* Accept broadcasts (loose but fast check) */
1087 if (eh->ether_dhost[0] == 0xff)
1090 /* Compare against our multicast addresses */
1091 for (i = 0; i < ie->mcast_count; i++) {
1092 if (ether_equal(eh->ether_dhost,
1093 (u_char *)&ie->mcast_addrs[i]))
1099 /* Always accept packets when in promiscuous mode */
1100 if ((ie->promisc & IFF_PROMISC) != 0)
1103 /* Always accept packets directed at us */
1104 if (ether_equal(eh->ether_dhost, ie->arpcom.ac_enaddr))
1107 /* Must have IFF_ALLMULTI but not IFF_PROMISC set. The chip is
1108 actually in promiscuous mode, so discard unicast packets. */
1109 return((eh->ether_dhost[0] & 1) != 0);
1113 * We want to isolate the bits that have meaning... This assumes that
1114 * IE_RBUF_SIZE is an even power of two. If somehow the act_len exceeds
1115 * the size of the buffer, then we are screwed anyway.
1118 ie_buflen(struct ie_softc * ie, int head)
1120 return (ie->rbuffs[head]->ie_rbd_actual
1121 & (IE_RBUF_SIZE | (IE_RBUF_SIZE - 1)));
1125 ie_packet_len(int unit, struct ie_softc * ie)
1128 int head = ie->rbhead;
1132 if (!(ie->rbuffs[ie->rbhead]->ie_rbd_actual & IE_RBD_USED)) {
1134 print_rbd(ie->rbuffs[ie->rbhead]);
1137 "ie%d: receive descriptors out of sync at %d\n",
1142 i = ie->rbuffs[head]->ie_rbd_actual & IE_RBD_LAST;
1144 acc += ie_buflen(ie, head);
1145 head = (head + 1) % ie->nrxbufs;
1152 * Read data off the interface, and turn it into an mbuf chain.
1154 * This code is DRAMATICALLY different from the previous version; this
1155 * version tries to allocate the entire mbuf chain up front, given the
1156 * length of the data available. This enables us to allocate mbuf
1157 * clusters in many situations where before we would have had a long
1158 * chain of partially-full mbufs. This should help to speed up the
1159 * operation considerably. (Provided that it works, of course.)
1162 ieget(int unit, struct ie_softc *ie, struct mbuf **mp, struct ether_header *ehp)
1164 struct mbuf *m, *top, **mymp;
1171 totlen = ie_packet_len(unit, ie);
1178 * Snarf the Ethernet header.
1180 bcopy((v_caddr_t) ie->cbuffs[i], (caddr_t) ehp, sizeof *ehp);
1181 /* ignore cast-qual warning here */
1184 * As quickly as possible, check if this packet is for us. If not,
1185 * don't waste a single cycle copying the rest of the packet in.
1186 * This is only a consideration when FILTER is defined; i.e., when
1187 * we are either running BPF or doing multicasting.
1189 if (!check_eh(ie, ehp)) {
1190 ie_drop_packet_buffer(unit, ie);
1191 ie->arpcom.ac_if.if_ierrors--; /* just this case, it's not an
1196 totlen -= (offset = sizeof *ehp);
1198 MGETHDR(*mp, M_DONTWAIT, MT_DATA);
1200 ie_drop_packet_buffer(unit, ie);
1204 m->m_pkthdr.rcvif = &ie->arpcom.ac_if;
1206 resid = m->m_pkthdr.len = totlen;
1211 * This loop goes through and allocates mbufs for all the data we
1212 * will be copying in. It does not actually do the copying yet.
1214 do { /* while(resid > 0) */
1216 * Try to allocate an mbuf to hold the data that we have.
1217 * If we already allocated one, just get another one and
1218 * stick it on the end (eventually). If we don't already
1219 * have one, try to allocate an mbuf cluster big enough to
1220 * hold the whole packet, if we think it's reasonable, or a
1221 * single mbuf which may or may not be big enough. Got that?
1224 MGET(m, M_DONTWAIT, MT_DATA);
1227 ie_drop_packet_buffer(unit, ie);
1232 if (resid >= MINCLSIZE) {
1233 MCLGET(m, M_DONTWAIT);
1234 if (m->m_flags & M_EXT)
1235 m->m_len = min(resid, MCLBYTES);
1237 if (resid < m->m_len) {
1238 if (!top && resid + max_linkhdr <= m->m_len)
1239 m->m_data += max_linkhdr;
1246 } while (resid > 0);
1254 * Now we take the mbuf chain (hopefully only one mbuf most of the
1255 * time) and stuff the data into it. There are no possible failures
1256 * at or after this point.
1258 while (resid > 0) { /* while there's stuff left */
1259 int thislen = ie_buflen(ie, head) - offset;
1262 * If too much data for the current mbuf, then fill the
1263 * current one up, go to the next one, and try again.
1265 if (thislen > m->m_len - thismboff) {
1266 int newlen = m->m_len - thismboff;
1268 bcopy((v_caddr_t) (ie->cbuffs[head] + offset),
1269 mtod(m, v_caddr_t) +thismboff, (unsigned) newlen);
1270 /* ignore cast-qual warning */
1272 thismboff = 0; /* new mbuf, so no offset */
1273 offset += newlen; /* we are now this far into
1275 resid -= newlen; /* so there is this much left
1280 * If there is more than enough space in the mbuf to hold
1281 * the contents of this buffer, copy everything in, advance
1282 * pointers, and so on.
1284 if (thislen < m->m_len - thismboff) {
1285 bcopy((v_caddr_t) (ie->cbuffs[head] + offset),
1286 mtod(m, caddr_t) +thismboff, (unsigned) thislen);
1287 thismboff += thislen; /* we are this far into the
1289 resid -= thislen; /* and this much is left */
1293 * Otherwise, there is exactly enough space to put this
1294 * buffer's contents into the current mbuf. Do the
1295 * combination of the above actions.
1297 bcopy((v_caddr_t) (ie->cbuffs[head] + offset),
1298 mtod(m, caddr_t) + thismboff, (unsigned) thislen);
1300 thismboff = 0; /* new mbuf, start at the beginning */
1301 resid -= thislen; /* and we are this far through */
1304 * Advance all the pointers. We can get here from either of
1305 * the last two cases, but never the first.
1309 ie->rbuffs[head]->ie_rbd_actual = 0;
1310 ie->rbuffs[head]->ie_rbd_length |= IE_RBD_LAST;
1311 ie->rbhead = head = (head + 1) % ie->nrxbufs;
1312 ie->rbuffs[ie->rbtail]->ie_rbd_length &= ~IE_RBD_LAST;
1313 ie->rbtail = (ie->rbtail + 1) % ie->nrxbufs;
1317 * Unless something changed strangely while we were doing the copy,
1318 * we have now copied everything in from the shared memory. This
1319 * means that we are done.
1325 * Read frame NUM from unit UNIT (pre-cached as IE).
1327 * This routine reads the RFD at NUM, and copies in the buffers from
1328 * the list of RBD, then rotates the RBD and RFD lists so that the receiver
1329 * doesn't start complaining. Trailers are DROPPED---there's no point
1330 * in wasting time on confusing code to deal with them. Hopefully,
1331 * this machine will never ARP for trailers anyway.
1334 ie_readframe(int unit, struct ie_softc *ie, int num/* frame number to read */)
1336 struct ie_recv_frame_desc rfd;
1338 struct ether_header eh;
1340 bcopy((v_caddr_t) (ie->rframes[num]), &rfd,
1341 sizeof(struct ie_recv_frame_desc));
1344 * Immediately advance the RFD list, since we we have copied ours
1347 ie->rframes[num]->ie_fd_status = 0;
1348 ie->rframes[num]->ie_fd_last |= IE_FD_LAST;
1349 ie->rframes[ie->rftail]->ie_fd_last &= ~IE_FD_LAST;
1350 ie->rftail = (ie->rftail + 1) % ie->nframes;
1351 ie->rfhead = (ie->rfhead + 1) % ie->nframes;
1353 if (rfd.ie_fd_status & IE_FD_OK) {
1354 if (ieget(unit, ie, &m, &eh)) {
1355 ie->arpcom.ac_if.if_ierrors++; /* this counts as an
1361 if (ie_debug & IED_READFRAME) {
1362 printf("ie%d: frame from ether %6D type %x\n", unit,
1363 eh.ether_shost, ":", (unsigned) eh.ether_type);
1365 if (ntohs(eh.ether_type) > ETHERTYPE_TRAIL
1366 && ntohs(eh.ether_type) < (ETHERTYPE_TRAIL + ETHERTYPE_NTRAILER))
1367 printf("received trailer!\n");
1374 * Finally pass this packet up to higher layers.
1376 ether_input(&ie->arpcom.ac_if, &eh, m);
1380 ie_drop_packet_buffer(int unit, struct ie_softc * ie)
1386 * This means we are somehow out of sync. So, we reset the
1389 if (!(ie->rbuffs[ie->rbhead]->ie_rbd_actual & IE_RBD_USED)) {
1391 print_rbd(ie->rbuffs[ie->rbhead]);
1393 log(LOG_ERR, "ie%d: receive descriptors out of sync at %d\n",
1398 i = ie->rbuffs[ie->rbhead]->ie_rbd_actual & IE_RBD_LAST;
1400 ie->rbuffs[ie->rbhead]->ie_rbd_length |= IE_RBD_LAST;
1401 ie->rbuffs[ie->rbhead]->ie_rbd_actual = 0;
1402 ie->rbhead = (ie->rbhead + 1) % ie->nrxbufs;
1403 ie->rbuffs[ie->rbtail]->ie_rbd_length &= ~IE_RBD_LAST;
1404 ie->rbtail = (ie->rbtail + 1) % ie->nrxbufs;
1410 * Start transmission on an interface.
1413 iestart(struct ifnet *ifp)
1415 struct ie_softc *ie = ifp->if_softc;
1416 struct mbuf *m0, *m;
1417 volatile unsigned char *buffer;
1421 * This is not really volatile, in this routine, but it makes gcc
1424 volatile u_short *bptr = &ie->scb->ie_command_list;
1426 if (!(ifp->if_flags & IFF_RUNNING))
1428 if (ifp->if_flags & IFF_OACTIVE)
1432 IF_DEQUEUE(&ie->arpcom.ac_if.if_snd, m);
1436 buffer = ie->xmit_cbuffs[ie->xmit_count];
1439 for (m0 = m; m && len < IE_BUF_LEN; m = m->m_next) {
1440 bcopy(mtod(m, caddr_t), buffer, m->m_len);
1446 len = max(len, ETHER_MIN_LEN);
1449 * See if bpf is listening on this interface, let it see the
1450 * packet before we commit it to the wire.
1452 if (ie->arpcom.ac_if.if_bpf)
1453 bpf_tap(&ie->arpcom.ac_if,
1454 (void *)ie->xmit_cbuffs[ie->xmit_count], len);
1456 ie->xmit_buffs[ie->xmit_count]->ie_xmit_flags =
1458 ie->xmit_buffs[ie->xmit_count]->ie_xmit_next = 0xffff;
1459 ie->xmit_buffs[ie->xmit_count]->ie_xmit_buf =
1460 MK_24(ie->iomem, ie->xmit_cbuffs[ie->xmit_count]);
1462 ie->xmit_cmds[ie->xmit_count]->com.ie_cmd_cmd = IE_CMD_XMIT;
1463 ie->xmit_cmds[ie->xmit_count]->ie_xmit_status = 0;
1464 ie->xmit_cmds[ie->xmit_count]->ie_xmit_desc =
1465 MK_16(ie->iomem, ie->xmit_buffs[ie->xmit_count]);
1467 *bptr = MK_16(ie->iomem, ie->xmit_cmds[ie->xmit_count]);
1468 bptr = &ie->xmit_cmds[ie->xmit_count]->com.ie_cmd_link;
1470 } while (ie->xmit_count < ie->ntxbufs);
1473 * If we queued up anything for transmission, send it.
1475 if (ie->xmit_count) {
1476 ie->xmit_cmds[ie->xmit_count - 1]->com.ie_cmd_cmd |=
1477 IE_CMD_LAST | IE_CMD_INTR;
1480 * By passing the command pointer as a null, we tell
1481 * command_and_wait() to pretend that this isn't an action
1482 * command. I wish I understood what was happening here.
1484 command_and_wait(ifp->if_dunit, IE_CU_START, 0, 0);
1485 ifp->if_flags |= IFF_OACTIVE;
1491 * Check to see if there's an 82586 out there.
1494 check_ie_present(int unit, caddr_t where, unsigned size)
1496 volatile struct ie_sys_conf_ptr *scp;
1497 volatile struct ie_int_sys_conf_ptr *iscp;
1498 volatile struct ie_sys_ctl_block *scb;
1504 realbase = (uintptr_t) where + size - (1 << 24);
1506 scp = (volatile struct ie_sys_conf_ptr *) (uintptr_t)
1507 (realbase + IE_SCP_ADDR);
1508 bzero((volatile char *) scp, sizeof *scp);
1511 * First we put the ISCP at the bottom of memory; this tests to make
1512 * sure that our idea of the size of memory is the same as the
1513 * controller's. This is NOT where the ISCP will be in normal
1516 iscp = (volatile struct ie_int_sys_conf_ptr *) where;
1517 bzero((volatile char *)iscp, sizeof *iscp);
1519 scb = (volatile struct ie_sys_ctl_block *) where;
1520 bzero((volatile char *)scb, sizeof *scb);
1522 scp->ie_bus_use = ie_softc[unit].bus_use; /* 8-bit or 16-bit */
1523 scp->ie_iscp_ptr = (caddr_t) (uintptr_t)
1524 ((volatile char *) iscp - (volatile char *) (uintptr_t) realbase);
1527 iscp->ie_scb_offset = MK_16(realbase, scb) + 256;
1529 (*ie_softc[unit].ie_reset_586) (unit);
1530 (*ie_softc[unit].ie_chan_attn) (unit);
1532 DELAY(100); /* wait a while... */
1534 if (iscp->ie_busy) {
1539 * Now relocate the ISCP to its real home, and reset the controller
1542 iscp = (void *) Align((caddr_t) (uintptr_t)
1543 (realbase + IE_SCP_ADDR -
1544 sizeof(struct ie_int_sys_conf_ptr)));
1545 bzero((volatile char *) iscp, sizeof *iscp); /* ignore cast-qual */
1547 scp->ie_iscp_ptr = (caddr_t) (uintptr_t)
1548 ((volatile char *) iscp - (volatile char *) (uintptr_t) realbase);
1551 iscp->ie_scb_offset = MK_16(realbase, scb);
1553 (*ie_softc[unit].ie_reset_586) (unit);
1554 (*ie_softc[unit].ie_chan_attn) (unit);
1558 if (iscp->ie_busy) {
1562 ie_softc[unit].iosize = size;
1563 ie_softc[unit].iomem = (caddr_t) (uintptr_t) realbase;
1565 ie_softc[unit].iscp = iscp;
1566 ie_softc[unit].scb = scb;
1569 * Acknowledge any interrupts we may have caused...
1571 ie_ack(scb, IE_ST_WHENCE, unit, ie_softc[unit].ie_chan_attn);
1578 * Divine the memory size of ie board UNIT.
1579 * Better hope there's nothing important hiding just below the ie card...
1582 find_ie_mem_size(int unit)
1586 ie_softc[unit].iosize = 0;
1588 for (size = 65536; size >= 8192; size -= 8192) {
1589 if (check_ie_present(unit, ie_softc[unit].iomembot, size)) {
1598 el_reset_586(int unit)
1600 outb(PORT + IE507_CTRL, EL_CTRL_RESET);
1602 outb(PORT + IE507_CTRL, EL_CTRL_NORMAL);
1607 sl_reset_586(int unit)
1609 outb(PORT + IEATT_RESET, 0);
1613 ee16_reset_586(int unit)
1615 outb(PORT + IEE16_ECTRL, IEE16_RESET_586);
1617 outb(PORT + IEE16_ECTRL, 0);
1622 el_chan_attn(int unit)
1624 outb(PORT + IE507_ATTN, 1);
1628 sl_chan_attn(int unit)
1630 outb(PORT + IEATT_ATTN, 0);
1634 ee16_chan_attn(int unit)
1636 outb(PORT + IEE16_ATTN, 0);
1640 ee16_read_eeprom(struct ie_softc *sc, int location)
1644 ectrl = inb(sc->port + IEE16_ECTRL);
1645 ectrl &= IEE16_ECTRL_MASK;
1646 ectrl |= IEE16_ECTRL_EECS;
1647 outb(sc->port + IEE16_ECTRL, ectrl);
1649 ee16_eeprom_outbits(sc, IEE16_EEPROM_READ, IEE16_EEPROM_OPSIZE1);
1650 ee16_eeprom_outbits(sc, location, IEE16_EEPROM_ADDR_SIZE);
1651 edata = ee16_eeprom_inbits(sc);
1652 ectrl = inb(sc->port + IEE16_ECTRL);
1653 ectrl &= ~(IEE16_RESET_ASIC | IEE16_ECTRL_EEDI | IEE16_ECTRL_EECS);
1654 outb(sc->port + IEE16_ECTRL, ectrl);
1655 ee16_eeprom_clock(sc, 1);
1656 ee16_eeprom_clock(sc, 0);
1661 ee16_eeprom_outbits(struct ie_softc *sc, int edata, int count)
1665 ectrl = inb(sc->port + IEE16_ECTRL);
1666 ectrl &= ~IEE16_RESET_ASIC;
1667 for (i = count - 1; i >= 0; i--) {
1668 ectrl &= ~IEE16_ECTRL_EEDI;
1669 if (edata & (1 << i)) {
1670 ectrl |= IEE16_ECTRL_EEDI;
1672 outb(sc->port + IEE16_ECTRL, ectrl);
1673 DELAY(1); /* eeprom data must be setup for 0.4 uSec */
1674 ee16_eeprom_clock(sc, 1);
1675 ee16_eeprom_clock(sc, 0);
1677 ectrl &= ~IEE16_ECTRL_EEDI;
1678 outb(sc->port + IEE16_ECTRL, ectrl);
1679 DELAY(1); /* eeprom data must be held for 0.4 uSec */
1683 ee16_eeprom_inbits(struct ie_softc *sc)
1685 int ectrl, edata, i;
1687 ectrl = inb(sc->port + IEE16_ECTRL);
1688 ectrl &= ~IEE16_RESET_ASIC;
1689 for (edata = 0, i = 0; i < 16; i++) {
1691 ee16_eeprom_clock(sc, 1);
1692 ectrl = inb(sc->port + IEE16_ECTRL);
1693 if (ectrl & IEE16_ECTRL_EEDO) {
1696 ee16_eeprom_clock(sc, 0);
1702 ee16_eeprom_clock(struct ie_softc *sc, int state)
1706 ectrl = inb(sc->port + IEE16_ECTRL);
1707 ectrl &= ~(IEE16_RESET_ASIC | IEE16_ECTRL_EESK);
1709 ectrl |= IEE16_ECTRL_EESK;
1711 outb(sc->port + IEE16_ECTRL, ectrl);
1712 DELAY(9); /* EESK must be stable for 8.38 uSec */
1715 static __inline void
1716 ee16_interrupt_enable(struct ie_softc *sc)
1719 outb(sc->port + IEE16_IRQ, sc->irq_encoded | IEE16_IRQ_ENABLE);
1724 sl_read_ether(int unit, unsigned char addr[6])
1728 for (i = 0; i < 6; i++)
1729 addr[i] = inb(PORT + i);
1742 printf("ie%d: reset\n", unit);
1743 ie_softc[unit].arpcom.ac_if.if_flags &= ~IFF_UP;
1744 ieioctl(&ie_softc[unit].arpcom.ac_if, SIOCSIFFLAGS, 0);
1747 * Stop i82586 dead in its tracks.
1749 if (command_and_wait(unit, IE_RU_ABORT | IE_CU_ABORT, 0, 0))
1750 printf("ie%d: abort commands timed out\n", unit);
1752 if (command_and_wait(unit, IE_RU_DISABLE | IE_CU_STOP, 0, 0))
1753 printf("ie%d: disable commands timed out\n", unit);
1756 if (!check_ie_present(unit, ie_softc[unit].iomembot,
1757 e_softc[unit].iosize))
1758 panic("ie disappeared!");
1761 ie_softc[unit].arpcom.ac_if.if_flags |= IFF_UP;
1762 ieioctl(&ie_softc[unit].arpcom.ac_if, SIOCSIFFLAGS, 0);
1769 * This is called if we time out.
1772 chan_attn_timeout(void *rock)
1778 * Send a command to the controller and wait for it to either
1779 * complete or be accepted, depending on the command. If the
1780 * command pointer is null, then pretend that the command is
1781 * not an action command. If the command pointer is not null,
1782 * and the command is an action command, wait for
1783 * ((volatile struct ie_cmd_common *)pcmd)->ie_cmd_status & MASK
1787 command_and_wait(int unit, int cmd, volatile void *pcmd, int mask)
1789 volatile struct ie_cmd_common *cc = pcmd;
1790 volatile int timedout = 0;
1791 struct callout_handle ch;
1793 ie_softc[unit].scb->ie_command = (u_short) cmd;
1795 if (IE_ACTION_COMMAND(cmd) && pcmd) {
1796 (*ie_softc[unit].ie_chan_attn) (unit);
1799 * According to the packet driver, the minimum timeout
1800 * should be .369 seconds, which we round up to .37.
1802 ch = timeout(chan_attn_timeout, (caddr_t)&timedout,
1804 /* ignore cast-qual */
1807 * Now spin-lock waiting for status. This is not a very
1808 * nice thing to do, but I haven't figured out how, or
1809 * indeed if, we can put the process waiting for action to
1810 * sleep. (We may be getting called through some other
1811 * timeout running in the kernel.)
1814 if ((cc->ie_cmd_status & mask) || timedout)
1818 untimeout(chan_attn_timeout, (caddr_t)&timedout, ch);
1819 /* ignore cast-qual */
1825 * Otherwise, just wait for the command to be accepted.
1827 (*ie_softc[unit].ie_chan_attn) (unit);
1829 while (ie_softc[unit].scb->ie_command); /* spin lock */
1836 * Run the time-domain reflectometer...
1839 run_tdr(int unit, volatile struct ie_tdr_cmd *cmd)
1843 cmd->com.ie_cmd_status = 0;
1844 cmd->com.ie_cmd_cmd = IE_CMD_TDR | IE_CMD_LAST;
1845 cmd->com.ie_cmd_link = 0xffff;
1846 cmd->ie_tdr_time = 0;
1848 ie_softc[unit].scb->ie_command_list = MK_16(MEM, cmd);
1849 cmd->ie_tdr_time = 0;
1851 if (command_and_wait(unit, IE_CU_START, cmd, IE_STAT_COMPL))
1854 result = cmd->ie_tdr_time;
1856 ie_ack(ie_softc[unit].scb, IE_ST_WHENCE, unit,
1857 ie_softc[unit].ie_chan_attn);
1859 if (result & IE_TDR_SUCCESS)
1862 if (result & IE_TDR_XCVR) {
1863 printf("ie%d: transceiver problem\n", unit);
1864 } else if (result & IE_TDR_OPEN) {
1865 printf("ie%d: TDR detected an open %d clocks away\n", unit,
1866 result & IE_TDR_TIME);
1867 } else if (result & IE_TDR_SHORT) {
1868 printf("ie%d: TDR detected a short %d clocks away\n", unit,
1869 result & IE_TDR_TIME);
1871 printf("ie%d: TDR returned unknown status %x\n", unit, result);
1876 start_receiver(int unit)
1880 ie_softc[unit].scb->ie_recv_list = MK_16(MEM, ie_softc[unit].rframes[0]);
1881 command_and_wait(unit, IE_RU_START, 0, 0);
1883 ie_ack(ie_softc[unit].scb, IE_ST_WHENCE, unit, ie_softc[unit].ie_chan_attn);
1889 * Here is a helper routine for iernr() and ieinit(). This sets up
1893 setup_rfa(v_caddr_t ptr, struct ie_softc * ie)
1895 volatile struct ie_recv_frame_desc *rfd = (volatile void *)ptr;
1896 volatile struct ie_recv_buf_desc *rbd;
1898 int unit = ie - &ie_softc[0];
1900 /* First lay them out */
1901 for (i = 0; i < ie->nframes; i++) {
1902 ie->rframes[i] = rfd;
1903 bzero((volatile char *) rfd, sizeof *rfd); /* ignore cast-qual */
1907 ptr = Alignvol(rfd); /* ignore cast-qual */
1909 /* Now link them together */
1910 for (i = 0; i < ie->nframes; i++) {
1911 ie->rframes[i]->ie_fd_next =
1912 MK_16(MEM, ie->rframes[(i + 1) % ie->nframes]);
1915 /* Finally, set the EOL bit on the last one. */
1916 ie->rframes[ie->nframes - 1]->ie_fd_last |= IE_FD_LAST;
1919 * Now lay out some buffers for the incoming frames. Note that we
1920 * set aside a bit of slop in each buffer, to make sure that we have
1921 * enough space to hold a single frame in every buffer.
1923 rbd = (volatile void *) ptr;
1925 for (i = 0; i < ie->nrxbufs; i++) {
1926 ie->rbuffs[i] = rbd;
1927 bzero((volatile char *)rbd, sizeof *rbd);
1928 ptr = Alignvol(ptr + sizeof *rbd);
1929 rbd->ie_rbd_length = IE_RBUF_SIZE;
1930 rbd->ie_rbd_buffer = MK_24(MEM, ptr);
1931 ie->cbuffs[i] = (volatile void *) ptr;
1932 ptr += IE_RBUF_SIZE;
1933 rbd = (volatile void *) ptr;
1936 /* Now link them together */
1937 for (i = 0; i < ie->nrxbufs; i++) {
1938 ie->rbuffs[i]->ie_rbd_next =
1939 MK_16(MEM, ie->rbuffs[(i + 1) % ie->nrxbufs]);
1942 /* Tag EOF on the last one */
1943 ie->rbuffs[ie->nrxbufs - 1]->ie_rbd_length |= IE_RBD_LAST;
1946 * We use the head and tail pointers on receive to keep track of the
1947 * order in which RFDs and RBDs are used.
1950 ie->rftail = ie->nframes - 1;
1952 ie->rbtail = ie->nrxbufs - 1;
1954 ie->scb->ie_recv_list = MK_16(MEM, ie->rframes[0]);
1955 ie->rframes[0]->ie_fd_buf_desc = MK_16(MEM, ie->rbuffs[0]);
1957 ptr = Alignvol(ptr);
1962 * Run the multicast setup command.
1966 mc_setup(int unit, v_caddr_t ptr,
1967 volatile struct ie_sys_ctl_block * scb)
1969 struct ie_softc *ie = &ie_softc[unit];
1970 volatile struct ie_mcast_cmd *cmd = (volatile void *) ptr;
1972 cmd->com.ie_cmd_status = 0;
1973 cmd->com.ie_cmd_cmd = IE_CMD_MCAST | IE_CMD_LAST;
1974 cmd->com.ie_cmd_link = 0xffff;
1976 /* ignore cast-qual */
1977 bcopy((v_caddr_t) ie->mcast_addrs, (v_caddr_t) cmd->ie_mcast_addrs,
1978 ie->mcast_count * sizeof *ie->mcast_addrs);
1980 cmd->ie_mcast_bytes = ie->mcast_count * 6; /* grrr... */
1982 scb->ie_command_list = MK_16(MEM, cmd);
1983 if (command_and_wait(unit, IE_CU_START, cmd, IE_STAT_COMPL)
1984 || !(cmd->com.ie_cmd_status & IE_STAT_OK)) {
1985 printf("ie%d: multicast address setup command failed\n", unit);
1992 * This routine takes the environment generated by check_ie_present()
1993 * and adds to it all the other structures we need to operate the adapter.
1994 * This includes executing the CONFIGURE, IA-SETUP, and MC-SETUP commands,
1995 * starting the receiver unit, and clearing interrupts.
1997 * THIS ROUTINE MUST BE CALLED AT splimp() OR HIGHER.
2003 struct ie_softc *ie = xsc;
2004 volatile struct ie_sys_ctl_block *scb = ie->scb;
2007 int unit = ie->unit;
2009 ptr = Alignvol((volatile char *) scb + sizeof *scb);
2012 * Send the configure command first.
2015 volatile struct ie_config_cmd *cmd = (volatile void *) ptr;
2017 ie_setup_config(cmd, ie->promisc,
2018 ie->hard_type == IE_STARLAN10);
2019 cmd->com.ie_cmd_status = 0;
2020 cmd->com.ie_cmd_cmd = IE_CMD_CONFIG | IE_CMD_LAST;
2021 cmd->com.ie_cmd_link = 0xffff;
2023 scb->ie_command_list = MK_16(MEM, cmd);
2025 if (command_and_wait(unit, IE_CU_START, cmd, IE_STAT_COMPL)
2026 || !(cmd->com.ie_cmd_status & IE_STAT_OK)) {
2027 printf("ie%d: configure command failed\n", unit);
2032 * Now send the Individual Address Setup command.
2035 volatile struct ie_iasetup_cmd *cmd = (volatile void *) ptr;
2037 cmd->com.ie_cmd_status = 0;
2038 cmd->com.ie_cmd_cmd = IE_CMD_IASETUP | IE_CMD_LAST;
2039 cmd->com.ie_cmd_link = 0xffff;
2041 bcopy((volatile char *)ie_softc[unit].arpcom.ac_enaddr,
2042 (volatile char *)&cmd->ie_address, sizeof cmd->ie_address);
2043 scb->ie_command_list = MK_16(MEM, cmd);
2044 if (command_and_wait(unit, IE_CU_START, cmd, IE_STAT_COMPL)
2045 || !(cmd->com.ie_cmd_status & IE_STAT_OK)) {
2046 printf("ie%d: individual address "
2047 "setup command failed\n", unit);
2053 * Now run the time-domain reflectometer.
2055 run_tdr(unit, (volatile void *) ptr);
2058 * Acknowledge any interrupts we have generated thus far.
2060 ie_ack(ie->scb, IE_ST_WHENCE, unit, ie->ie_chan_attn);
2065 ptr = setup_rfa(ptr, ie);
2068 * Finally, the transmit command and buffer are the last little bit
2072 /* transmit command buffers */
2073 for (i = 0; i < ie->ntxbufs; i++) {
2074 ie->xmit_cmds[i] = (volatile void *) ptr;
2075 ptr += sizeof *ie->xmit_cmds[i];
2076 ptr = Alignvol(ptr);
2077 ie->xmit_buffs[i] = (volatile void *)ptr;
2078 ptr += sizeof *ie->xmit_buffs[i];
2079 ptr = Alignvol(ptr);
2082 /* transmit buffers */
2083 for (i = 0; i < ie->ntxbufs - 1; i++) {
2084 ie->xmit_cbuffs[i] = (volatile void *)ptr;
2086 ptr = Alignvol(ptr);
2088 ie->xmit_cbuffs[ie->ntxbufs - 1] = (volatile void *) ptr;
2090 for (i = 1; i < ie->ntxbufs; i++) {
2091 bzero((v_caddr_t) ie->xmit_cmds[i], sizeof *ie->xmit_cmds[i]);
2092 bzero((v_caddr_t) ie->xmit_buffs[i], sizeof *ie->xmit_buffs[i]);
2096 * This must be coordinated with iestart() and ietint().
2098 ie->xmit_cmds[0]->ie_xmit_status = IE_STAT_COMPL;
2100 /* take the ee16 out of loopback */
2101 if (ie->hard_type == IE_EE16) {
2102 u_int8_t bart_config;
2104 bart_config = inb(PORT + IEE16_CONFIG);
2105 bart_config &= ~IEE16_BART_LOOPBACK;
2106 /* inb doesn't get bit! */
2107 bart_config |= IEE16_BART_MCS16_TEST;
2108 outb(PORT + IEE16_CONFIG, bart_config);
2109 ee16_interrupt_enable(ie);
2110 ee16_chan_attn(unit);
2112 ie->arpcom.ac_if.if_flags |= IFF_RUNNING; /* tell higher levels
2114 start_receiver(unit);
2122 command_and_wait(unit, IE_RU_DISABLE, 0, 0);
2126 ieioctl(struct ifnet *ifp, u_long command, caddr_t data)
2136 error = ether_ioctl(ifp, command, data);
2141 * Note that this device doesn't have an "all multicast"
2142 * mode, so we must turn on promiscuous mode and do the
2143 * filtering manually.
2145 if ((ifp->if_flags & IFF_UP) == 0 &&
2146 (ifp->if_flags & IFF_RUNNING)) {
2147 ifp->if_flags &= ~IFF_RUNNING;
2148 ie_stop(ifp->if_dunit);
2149 } else if ((ifp->if_flags & IFF_UP) &&
2150 (ifp->if_flags & IFF_RUNNING) == 0) {
2151 ie_softc[ifp->if_dunit].promisc =
2152 ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI);
2153 ieinit(ifp->if_softc);
2154 } else if (ie_softc[ifp->if_dunit].promisc ^
2155 (ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI))) {
2156 ie_softc[ifp->if_dunit].promisc =
2157 ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI);
2158 ieinit(ifp->if_softc);
2165 * Update multicast listeners
2167 /* reset multicast filtering */
2168 ie_mc_reset(ifp->if_dunit);
2181 ie_mc_reset(int unit)
2183 struct ie_softc *ie = &ie_softc[unit];
2184 struct ifmultiaddr *ifma;
2187 * Step through the list of addresses.
2189 ie->mcast_count = 0;
2190 for (ifma = ie->arpcom.ac_if.if_multiaddrs.lh_first; ifma;
2191 ifma = ifma->ifma_link.le_next) {
2192 if (ifma->ifma_addr->sa_family != AF_LINK)
2195 /* XXX - this is broken... */
2196 if (ie->mcast_count >= MAXMCAST) {
2197 ie->arpcom.ac_if.if_flags |= IFF_ALLMULTI;
2198 ieioctl(&ie->arpcom.ac_if, SIOCSIFFLAGS, (void *) 0);
2201 bcopy(LLADDR((struct sockaddr_dl *) ifma->ifma_addr),
2202 &(ie->mcast_addrs[ie->mcast_count]), 6);
2207 ie->want_mcsetup = 1;
2213 print_rbd(volatile struct ie_recv_buf_desc * rbd)
2215 printf("RBD at %p:\n"
2216 "actual %04x, next %04x, buffer %p\n"
2217 "length %04x, mbz %04x\n",
2218 (volatile void *) rbd,
2219 rbd->ie_rbd_actual, rbd->ie_rbd_next,
2220 (void *) rbd->ie_rbd_buffer,
2221 rbd->ie_rbd_length, rbd->mbz);