5 * A ring buffer-based, bus-mastering Ethernet driver.
7 * Derived from Etherboot's 3c90x.c, which is
8 * Copyright (C) 1999 LightSys Technology Services, Inc.
9 * Portions Copyright (C) 1999 Steve Smith
11 * This program may be re-distributed in source or binary form, modified,
12 * sold, or copied for any purpose, provided that the above copyright message
13 * and this text are included with all source copies or derivative works, and
14 * provided that the above copyright message and this text are included in the
15 * documentation of any binary-only distributions. This program is distributed
16 * WITHOUT ANY WARRANTY, without even the warranty of FITNESS FOR A PARTICULAR
17 * PURPOSE or MERCHANTABILITY. Please read the associated documentation
18 * "3c90x.txt" before compiling and using this driver.
22 * v0.10 1-26-1998 GRB Initial implementation.
23 * v0.90 1-27-1998 GRB System works.
24 * v1.00pre1 2-11-1998 GRB Got prom boot issue fixed.
25 * v2.0 9-24-1999 SCS Modified for 3c905 (from 3c905b code)
26 * Re-wrote poll and transmit for
27 * better error recovery and heavy
28 * network traffic operation
29 * v2.01 5-26-2003 NN Fixed driver alignment issue which
30 * caused system lockups if driver structures
32 * NetWatch0 12-07-2008 JAW Taken out back and shot.
36 #include "etherboot-compat.h"
41 #include <pci-bother.h>
46 #define XCVR_MAGIC (0x5A00)
48 /*** Register definitions for the 3c905 ***/
51 regPowerMgmtCtrl_w = 0x7c, /** 905B Revision Only **/
52 regUpMaxBurst_w = 0x7a, /** 905B Revision Only **/
53 regDnMaxBurst_w = 0x78, /** 905B Revision Only **/
54 regDebugControl_w = 0x74, /** 905B Revision Only **/
55 regDebugData_l = 0x70, /** 905B Revision Only **/
56 regRealTimeCnt_l = 0x40, /** Universal **/
57 regUpBurstThresh_b = 0x3e, /** 905B Revision Only **/
58 regUpPoll_b = 0x3d, /** 905B Revision Only **/
59 regUpPriorityThresh_b = 0x3c, /** 905B Revision Only **/
60 regUpListPtr_l = 0x38, /** Universal **/
61 regCountdown_w = 0x36, /** Universal **/
62 regFreeTimer_w = 0x34, /** Universal **/
63 regUpPktStatus_l = 0x30, /** Universal with Exception, pg 130 **/
64 regTxFreeThresh_b = 0x2f, /** 90X Revision Only **/
65 regDnPoll_b = 0x2d, /** 905B Revision Only **/
66 regDnPriorityThresh_b = 0x2c, /** 905B Revision Only **/
67 regDnBurstThresh_b = 0x2a, /** 905B Revision Only **/
68 regDnListPtr_l = 0x24, /** Universal with Exception, pg 107 **/
69 regDmaCtrl_l = 0x20, /** Universal with Exception, pg 106 **/
71 regIntStatusAuto_w = 0x1e, /** 905B Revision Only **/
72 regTxStatus_b = 0x1b, /** Universal with Exception, pg 113 **/
73 regTimer_b = 0x1a, /** Universal **/
74 regTxPktId_b = 0x18, /** 905B Revision Only **/
75 regCommandIntStatus_w = 0x0e, /** Universal (Command Variations) **/
78 /** following are windowed registers **/
81 regPowerMgmtEvent_7_w = 0x0c, /** 905B Revision Only **/
82 regVlanEtherType_7_w = 0x04, /** 905B Revision Only **/
83 regVlanMask_7_w = 0x00, /** 905B Revision Only **/
88 regBytesXmittedOk_6_w = 0x0c, /** Universal **/
89 regBytesRcvdOk_6_w = 0x0a, /** Universal **/
90 regUpperFramesOk_6_b = 0x09, /** Universal **/
91 regFramesDeferred_6_b = 0x08, /** Universal **/
92 regFramesRecdOk_6_b = 0x07, /** Universal with Exceptions, pg 142 **/
93 regFramesXmittedOk_6_b = 0x06, /** Universal **/
94 regRxOverruns_6_b = 0x05, /** Universal **/
95 regLateCollisions_6_b = 0x04, /** Universal **/
96 regSingleCollisions_6_b = 0x03, /** Universal **/
97 regMultipleCollisions_6_b = 0x02, /** Universal **/
98 regSqeErrors_6_b = 0x01, /** Universal **/
99 regCarrierLost_6_b = 0x00, /** Universal **/
104 regIndicationEnable_5_w = 0x0c, /** Universal **/
105 regInterruptEnable_5_w = 0x0a, /** Universal **/
106 regTxReclaimThresh_5_b = 0x09, /** 905B Revision Only **/
107 regRxFilter_5_b = 0x08, /** Universal **/
108 regRxEarlyThresh_5_w = 0x06, /** Universal **/
109 regTxStartThresh_5_w = 0x00, /** Universal **/
114 regUpperBytesOk_4_b = 0x0d, /** Universal **/
115 regBadSSD_4_b = 0x0c, /** Universal **/
116 regMediaStatus_4_w = 0x0a, /** Universal with Exceptions, pg 201 **/
117 regPhysicalMgmt_4_w = 0x08, /** Universal **/
118 regNetworkDiagnostic_4_w = 0x06, /** Universal with Exceptions, pg 203 **/
119 regFifoDiagnostic_4_w = 0x04, /** Universal with Exceptions, pg 196 **/
120 regVcoDiagnostic_4_w = 0x02, /** Undocumented? **/
125 regTxFree_3_w = 0x0c, /** Universal **/
126 regRxFree_3_w = 0x0a, /** Universal with Exceptions, pg 125 **/
127 regResetMediaOptions_3_w = 0x08, /** Media Options on B Revision, **/
128 /** Reset Options on Non-B Revision **/
129 regMacControl_3_w = 0x06, /** Universal with Exceptions, pg 199 **/
130 regMaxPktSize_3_w = 0x04, /** 905B Revision Only **/
131 regInternalConfig_3_l = 0x00, /** Universal, different bit **/
132 /** definitions, pg 59 **/
137 regResetOptions_2_w = 0x0c, /** 905B Revision Only **/
138 regStationMask_2_3w = 0x06, /** Universal with Exceptions, pg 127 **/
139 regStationAddress_2_3w = 0x00, /** Universal with Exceptions, pg 127 **/
144 regRxStatus_1_w = 0x0a, /** 90X Revision Only, Pg 126 **/
149 regEepromData_0_w = 0x0c, /** Universal **/
150 regEepromCommand_0_w = 0x0a, /** Universal **/
151 regBiosRomData_0_b = 0x08, /** 905B Revision Only **/
152 regBiosRomAddr_0_l = 0x04, /** 905B Revision Only **/
156 /*** The names for the eight register windows ***/
159 winPowerVlan7 = 0x07,
160 winStatistics6 = 0x06,
161 winTxRxControl5 = 0x05,
162 winDiagnostics4 = 0x04,
163 winTxRxOptions3 = 0x03,
164 winAddressing2 = 0x02,
166 winEepromBios0 = 0x00,
170 /*** Command definitions for the 3c90X ***/
173 cmdGlobalReset = 0x00, /** Universal with Exceptions, pg 151 **/
174 cmdSelectRegisterWindow = 0x01, /** Universal **/
175 cmdEnableDcConverter = 0x02, /** **/
176 cmdRxDisable = 0x03, /** **/
177 cmdRxEnable = 0x04, /** Universal **/
178 cmdRxReset = 0x05, /** Universal **/
179 cmdStallCtl = 0x06, /** Universal **/
180 cmdTxEnable = 0x09, /** Universal **/
181 cmdTxDisable = 0x0A, /** **/
182 cmdTxReset = 0x0B, /** Universal **/
183 cmdRequestInterrupt = 0x0C, /** **/
184 cmdAcknowledgeInterrupt = 0x0D, /** Universal **/
185 cmdSetInterruptEnable = 0x0E, /** Universal **/
186 cmdSetIndicationEnable = 0x0F, /** Universal **/
187 cmdSetRxFilter = 0x10, /** Universal **/
188 cmdSetRxEarlyThresh = 0x11, /** **/
189 cmdSetTxStartThresh = 0x13, /** **/
190 cmdStatisticsEnable = 0x15, /** **/
191 cmdStatisticsDisable = 0x16, /** **/
192 cmdDisableDcConverter = 0x17, /** **/
193 cmdSetTxReclaimThresh = 0x18, /** **/
194 cmdSetHashFilterBit = 0x19, /** **/
198 /*** Values for int status register bitmask **/
199 #define INT_INTERRUPTLATCH (1<<0)
200 #define INT_HOSTERROR (1<<1)
201 #define INT_TXCOMPLETE (1<<2)
202 #define INT_RXCOMPLETE (1<<4)
203 #define INT_RXEARLY (1<<5)
204 #define INT_INTREQUESTED (1<<6)
205 #define INT_UPDATESTATS (1<<7)
206 #define INT_LINKEVENT (1<<8)
207 #define INT_DNCOMPLETE (1<<9)
208 #define INT_UPCOMPLETE (1<<10)
209 #define INT_CMDINPROGRESS (1<<12)
210 #define INT_WINDOWNUMBER (7<<13)
212 /* These structures are all 64-bit aligned, as needed for bus-mastering I/O. */
216 } segment_t __attribute__ ((aligned(8)));
221 segment_t segments[64 /* XXX magic */];
222 } txdesc_t __attribute__ ((aligned(8)));
224 /*** RX descriptor ***/
228 segment_t segments[64];
229 } rxdesc_t __attribute__ ((aligned(8)));
239 static nic_3c90x_t _nic;
241 #define _outl(v,a) outl((a),(v))
242 #define _outw(v,a) outw((a),(v))
243 #define _outb(v,a) outb((a),(v))
245 static int _issue_command(nic_3c90x_t *nic, int cmd, int param)
247 outw(nic->ioaddr + regCommandIntStatus_w, (cmd << 11) | param);
249 while (inw(nic->ioaddr + regCommandIntStatus_w) & INT_CMDINPROGRESS)
256 /*** a3c90x_internal_SetWindow: selects a register window set.
258 static int _set_window(nic_3c90x_t *nic, int window)
260 if (nic->curwnd == window)
263 _issue_command(nic, cmdSelectRegisterWindow, window);
264 nic->curwnd = window;
270 /*** _read_eeprom - read data from the serial eeprom.
272 static unsigned short
273 _read_eeprom(nic_3c90x_t *nic, int address)
277 /** Select correct window **/
278 _set_window(nic, winEepromBios0);
280 /** Make sure the eeprom isn't busy **/
284 for (i = 0; i < 165; i++)
285 inb(0x80); /* wait 165 usec */
287 while(0x8000 & inw(nic->ioaddr + regEepromCommand_0_w));
289 /** Read the value. **/
291 _outw(address + (0x230), nic->ioaddr + regEepromCommand_0_w);
293 _outw(address + 0x80, nic->ioaddr + regEepromCommand_0_w);
298 for (i = 0; i < 165; i++)
299 inb(0x80); /* wait 165 usec */
301 while(0x8000 & inw(nic->ioaddr + regEepromCommand_0_w));
302 val = inw(nic->ioaddr + regEepromData_0_w);
309 /*** a3c90x_reset: exported function that resets the card to its default
310 *** state. This is so the Linux driver can re-set the card up the way
311 *** it wants to. If CFG_3C90X_PRESERVE_XCVR is defined, then the reset will
312 *** not alter the selected transceiver that we used to download the boot
315 static void _reset(nic_3c90x_t *nic)
317 /** Send the reset command to the card **/
318 outputf("3c90x: issuing RESET");
319 _issue_command(nic, cmdGlobalReset, 0);
321 /** global reset command resets station mask, non-B revision cards
322 ** require explicit reset of values
324 _set_window(nic, winAddressing2);
325 _outw(0, nic->ioaddr + regStationMask_2_3w+0);
326 _outw(0, nic->ioaddr + regStationMask_2_3w+2);
327 _outw(0, nic->ioaddr + regStationMask_2_3w+4);
329 /** Issue transmit reset, wait for command completion **/
330 _issue_command(nic, cmdTxReset, 0);
332 _outb(0x01, nic->ioaddr + regTxFreeThresh_b);
333 _issue_command(nic, cmdTxEnable, 0);
336 ** reset of the receiver on B-revision cards re-negotiates the link
337 ** takes several seconds (a computer eternity)
340 _issue_command(nic, cmdRxReset, 0x04);
342 _issue_command(nic, cmdRxReset, 0x00);
343 _issue_command(nic, cmdRxEnable, 0);
345 _issue_command(nic, cmdSetInterruptEnable, 0);
346 /** enable rxComplete and txComplete **/
347 _issue_command(nic, cmdSetIndicationEnable, 0x0014);
348 /** acknowledge any pending status flags **/
349 _issue_command(nic, cmdAcknowledgeInterrupt, 0x661);
355 /***************************** Transmit routines *****************************/
359 static txdesc_t txdescs[XMIT_BUFS];
360 static struct pbuf *txpbufs[XMIT_BUFS] = {0,};
362 /* txcons is the index into the ring buffer of the last packet that the
363 * 3c90x was seen processing, or -1 if the 3c90x was idle.
365 static int txcons = -1;
367 /* txprod is the index of the _next_ buffer that the driver will write into. */
368 static int txprod = 0;
370 /* _transmit adds a packet to the transmit ring buffer. If no space is
371 * available in the buffer, then _transmit blocks until a packet has been
374 static void _transmit(struct nic *_nic, struct pbuf *p)
376 nic_3c90x_t *nic = (nic_3c90x_t *)_nic;
377 unsigned char status;
380 /* Wait for there to be space. */
381 if (txcons == txprod)
385 outputf("3c90x: txbuf full, waiting for space...");
386 while (inl(nic->ioaddr + regDnListPtr_l) != 0)
388 outputf("3c90x: took %d iters", i);
391 /* Stall the download engine so it doesn't bother us. */
392 _issue_command(nic, cmdStallCtl, 2 /* Stall download */);
394 /* Clean up old txcons. */
397 unsigned long curp = inl(nic->ioaddr + regDnListPtr_l);
403 end = (curp - v2p(txdescs)) / sizeof(txdescs[0]);
405 while (txcons != end)
407 pbuf_free(txpbufs[txcons]);
408 txpbufs[txcons] = NULL;
409 txdescs[txcons].hdr = 0;
410 txdescs[txcons].next = 0;
411 txcons = (txcons + 1) % XMIT_BUFS;
413 if (txcons == txprod)
417 /* Look at the TX status */
418 status = inb(nic->ioaddr + regTxStatus_b);
421 outputf("3c90x: error: the nus.");
422 outb(nic->ioaddr + regTxStatus_b, 0x00);
425 /* Set up the new txdesc. */
426 txdescs[txprod].next = 0;
430 for (; p; p = p->next)
432 txdescs[txprod].segments[n].addr = v2p(p->payload);
433 txdescs[txprod].segments[n].len = p->len | (p->next ? 0 : (1 << 31));
438 txdescs[txprod].hdr = len; /* If we wanted completion notification, bit 15 */
440 /* Now link the new one in, after it's been set up. */
441 txdescs[(txprod + XMIT_BUFS - 1) % XMIT_BUFS].next = v2p(&(txdescs[txprod]));
443 /* If the card is stopped, start it up again. */
444 if (inl(nic->ioaddr + regDnListPtr_l) == 0)
446 outl(nic->ioaddr + regDnListPtr_l, v2p(&(txdescs[txprod])));
450 txprod = (txprod + 1) % XMIT_BUFS;
452 /* And let it proceed on its way. */
453 _issue_command(nic, cmdStallCtl, 3 /* Unstall download */);
456 /** successful completion (sans "interrupt Requested" bit) **/
457 if ((status & 0xbf) == 0x80)
460 outputf("3c90x: Status (%hhX)", status);
461 /** check error codes **/
464 outputf("3c90x: Tx Reclaim Error (%hhX)", status);
466 } else if (status & 0x04) {
467 outputf("3c90x: Tx Status Overflow (%hhX)", status);
469 _outb(0x00, nic->ioaddr + regTxStatus_b);
470 /** must re-enable after max collisions before re-issuing tx **/
471 _issue_command(nic, cmdTxEnable, 0);
472 } else if (status & 0x08) {
473 outputf("3c90x: Tx Max Collisions (%hhX)", status);
474 /** must re-enable after max collisions before re-issuing tx **/
475 _issue_command(nic, cmdTxEnable, 0);
476 } else if (status & 0x10) {
477 outputf("3c90x: Tx Underrun (%hhX)", status);
479 } else if (status & 0x20) {
480 outputf("3c90x: Tx Jabber (%hhX)", status);
482 } else if ((status & 0x80) != 0x80) {
483 outputf("3c90x: Internal Error - Incomplete Transmission (%hhX)", status);
489 /***************************** Receive routines *****************************/
490 #define MAX_RECV_SIZE 1536
493 static rxdesc_t rxdescs[RECV_BUFS];
494 static struct pbuf *rxpbufs[RECV_BUFS] = {0,};
496 /* rxcons is the pointer to the receive descriptor that the ethernet card will
499 static int rxcons = 0;
501 /* rxprod is the pointer to the receive descriptor that the driver will
504 static int rxprod = 0;
506 /* _recv_prepare fills the 3c90x's ring buffer with fresh pbufs from lwIP.
507 * The upload engine need not be stalled.
509 static void _recv_prepare(nic_3c90x_t *nic)
514 while ((rxprod != rxcons) || !rxpbufs[rxprod])
519 if (!rxpbufs[rxprod])
520 rxpbufs[rxprod] = p = pbuf_alloc(PBUF_RAW, MAX_RECV_SIZE, PBUF_POOL);
522 outputf("WARNING: 3c90x has pbuf in slot %d", rxprod);
528 outputf("3c90x: out of memory for rx pbuf?");
532 rxdescs[rxprod].status = 0;
533 rxdescs[rxprod].next = 0;
534 for (i = 0; p; p = p->next, i++)
536 rxdescs[rxprod].segments[i].addr = v2p(p->payload);
537 rxdescs[rxprod].segments[i].len = p->len | (p->next ? 0 : (1 << 31));
540 /* Hook in the new one after and only after it's been fully set up. */
541 rxdescs[(rxprod + RECV_BUFS - 1) % RECV_BUFS].next = v2p(&(rxdescs[rxprod]));
542 rxprod = (rxprod + 1) % RECV_BUFS;
545 if (inl(nic->ioaddr + regUpListPtr_l) == 0 && rxpbufs[oldprod]) /* Ran out of shit, and got new shit? */
547 outl(nic->ioaddr + regUpListPtr_l, v2p(&rxdescs[oldprod]));
548 outputf("3c90x: WARNING: Ran out of rx slots");
551 _issue_command(nic, cmdStallCtl, 1 /* Unstall upload */);
554 /* _recv polls the ring buffer to see if any packets are available. If any
555 * are, then eth_recv is called for each available. _recv returns how many
556 * packets it received successfully. Whether _recv got any packets or not,
557 * _recv does not block, and reinitializes the ring buffer with fresh pbufs.
559 static int _recv(struct nic *_nic)
561 nic_3c90x_t *nic = (nic_3c90x_t *)_nic;
566 while ((rxdescs[rxcons].status & ((1<<14) | (1<<15))) != 0)
568 /** Check for Error (else we have good packet) **/
569 if (rxdescs[rxcons].status & (1<<14))
571 errcode = rxdescs[rxcons].status;
572 if (errcode & (1<<16))
573 outputf("3C90X: Rx Overrun (%hX)",errcode>>16);
574 else if (errcode & (1<<17))
575 outputf("3C90X: Runt Frame (%hX)",errcode>>16);
576 else if (errcode & (1<<18))
577 outputf("3C90X: Alignment Error (%hX)",errcode>>16);
578 else if (errcode & (1<<19))
579 outputf("3C90X: CRC Error (%hX)",errcode>>16);
580 else if (errcode & (1<<20))
581 outputf("3C90X: Oversized Frame (%hX)",errcode>>16);
583 outputf("3C90X: Packet error (%hX)",errcode>>16);
586 pbuf_free(rxpbufs[rxcons]); /* Bounce the old one before setting it up again. */
589 pbuf_realloc(p, rxdescs[rxcons].status & 0x1FFF); /* Resize the packet to how large it actually is. */
592 rxpbufs[rxcons] = NULL;
593 rxdescs[rxcons].status = 0;
594 rxcons = (rxcons + 1) % RECV_BUFS;
603 _recv_prepare(nic); /* Light the NIC up again. */
607 /*** a3c90x_probe: exported routine to probe for the 3c905 card and perform
608 *** initialization. If this routine is called, the pci functions did find the
609 *** card. We just have to init it here.
611 static int _probe(struct pci_dev *pci, void *data)
613 nic_3c90x_t *nic = &_nic;
615 unsigned short eeprom[0x100];
619 unsigned short linktype;
620 #define HWADDR_OFFSET 10
622 unsigned long ioaddr = 0;
623 for (i = 0; i < 6; i++)
624 if (pci->bars[i].type == PCI_BAR_IO)
626 ioaddr = pci->bars[i].addr;
632 outputf("3c90x: Unable to find I/O address");
637 pci_write16(pci->bus, pci->dev, pci->fn, 0xE0,
638 pci_read16(pci->bus, pci->dev, pci->fn, 0xE0) & ~0x3);
640 outputf("3c90x: Picked I/O address %04x", ioaddr);
642 nic->nic.ioaddr = ioaddr & ~3;
645 nic->ioaddr = ioaddr;
646 nic->is3c556 = (pci->did == 0x6055);
648 switch (_read_eeprom(nic, 0x03))
650 case 0x9000: /** 10 Base TPO **/
651 case 0x9001: /** 10/100 T4 **/
652 case 0x9050: /** 10/100 TPO **/
653 case 0x9051: /** 10 Base Combo **/
657 case 0x9004: /** 10 Base TPO **/
658 case 0x9005: /** 10 Base Combo **/
659 case 0x9006: /** 10 Base TPO and Base2 **/
660 case 0x900A: /** 10 Base FL **/
661 case 0x9055: /** 10/100 TPO **/
662 case 0x9056: /** 10/100 T4 **/
663 case 0x905A: /** 10 Base FX **/
669 /** Load the EEPROM contents **/
672 eeprom[i] = _read_eeprom(nic, i);
675 eeprom[i] = _read_eeprom(nic, i);
677 /** Retrieve the Hardware address and print it on the screen. **/
678 nic->nic.hwaddr[0] = eeprom[HWADDR_OFFSET + 0]>>8;
679 nic->nic.hwaddr[1] = eeprom[HWADDR_OFFSET + 0]&0xFF;
680 nic->nic.hwaddr[2] = eeprom[HWADDR_OFFSET + 1]>>8;
681 nic->nic.hwaddr[3] = eeprom[HWADDR_OFFSET + 1]&0xFF;
682 nic->nic.hwaddr[4] = eeprom[HWADDR_OFFSET + 2]>>8;
683 nic->nic.hwaddr[5] = eeprom[HWADDR_OFFSET + 2]&0xFF;
684 outputf("MAC Address = %02x:%02x:%02x:%02x:%02x:%02x",
685 nic->nic.hwaddr[0], nic->nic.hwaddr[1],
686 nic->nic.hwaddr[2], nic->nic.hwaddr[3],
687 nic->nic.hwaddr[4], nic->nic.hwaddr[5]);
689 /** 3C556: Invert MII power **/
691 _set_window(nic, winAddressing2);
692 outw(nic->ioaddr + regResetOptions_2_w,
693 inw(nic->ioaddr + regResetOptions_2_w) | 0x4000);
696 /* Test if the link is good; if not, bail out */
697 _set_window(nic, winDiagnostics4);
698 mstat = inw(nic->ioaddr + regMediaStatus_4_w);
699 if((mstat & (1<<11)) == 0) {
700 outputf("3c90x: valid link not established");
704 /* Program the MAC address into the station address registers */
705 _set_window(nic, winAddressing2);
706 outw(nic->ioaddr + regStationAddress_2_3w, htons(eeprom[HWADDR_OFFSET + 0]));
707 outw(nic->ioaddr + regStationAddress_2_3w+2, htons(eeprom[HWADDR_OFFSET + 1]));
708 outw(nic->ioaddr + regStationAddress_2_3w+4, htons(eeprom[HWADDR_OFFSET + 2]));
709 outw(nic->ioaddr + regStationMask_2_3w+0, 0);
710 outw(nic->ioaddr + regStationMask_2_3w+2, 0);
711 outw(nic->ioaddr + regStationMask_2_3w+4, 0);
713 /** Read the media options register, print a message and set default
716 ** Uses Media Option command on B revision, Reset Option on non-B
717 ** revision cards -- same register address
719 _set_window(nic, winTxRxOptions3);
720 mopt = inw(nic->ioaddr + regResetMediaOptions_3_w);
722 /** mask out VCO bit that is defined as 10baseFL bit on B-rev cards **/
726 outputf("3c90x: connectors present: ");
731 outputf(" 100Base-T4");
736 outputf(" 100Base-FX");
741 outputf(" 10Base-2");
754 if ((mopt & 0xA) == 0xA)
756 outputf(" 10Base-T / 100Base-TX");
758 } else if ((mopt & 0xA) == 0x2) {
759 outputf(" 100Base-TX");
761 } else if ((mopt & 0xA) == 0x8) {
762 outputf(" 10Base-T");
766 /** Determine transceiver type to use, depending on value stored in
769 if (nic->isBrev && ((eeprom[0x16] & 0xFF00) == XCVR_MAGIC))
770 linktype = eeprom[0x16] & 0x000F; /* User-defined */
771 else if (linktype == 0x0009) {
773 outputf("WARNING: MII External MAC Mode only supported on B-revision "
774 "cards!!!!\nFalling Back to MII Mode\n");
778 /** enable DC converter for 10-Base-T **/
779 if (linktype == 0x0003)
780 _issue_command(nic, cmdEnableDcConverter, 0);
782 /** Set the link to the type we just determined. **/
783 _set_window(nic, winTxRxOptions3);
784 cfg = inl(nic->ioaddr + regInternalConfig_3_l);
786 cfg |= (linktype<<20);
787 outl(nic->ioaddr + regInternalConfig_3_l, cfg);
789 /* Reset and turn on the transmit engine. */
790 _issue_command(nic, cmdTxReset, 0);
792 _outb(0x01, nic->ioaddr + regTxFreeThresh_b);
793 _issue_command(nic, cmdTxEnable, 0);
795 /* Reset and turn on the receive engine. */
796 _issue_command(nic, cmdRxReset, nic->isBrev ? 0x04 : 0x00);
797 _issue_command(nic, cmdSetRxFilter, 0x01 + 0x02 + 0x04); /* Individual, multicast, broadcast */
798 _recv_prepare(nic); /* Set up the ring buffer... */
799 _issue_command(nic, cmdRxEnable, 0); /* ... and light it up. */
801 /* Turn on interrupts, and ack any that are hanging out. */
802 _issue_command(nic, cmdSetInterruptEnable, 0);
803 _issue_command(nic, cmdSetIndicationEnable, 0x0014);
804 _issue_command(nic, cmdAcknowledgeInterrupt, 0x661);
806 /* Register with lwIP. */
807 nic->nic.recv = _recv;
808 nic->nic.transmit = _transmit;
809 eth_register(&(nic->nic));
814 static struct pci_id _pci_ids[] = {
815 /* Original 90x revisions: */
816 PCI_ROM(0x10b7, 0x6055, "3c556", "3C556"), /* Huricane */
817 PCI_ROM(0x10b7, 0x9000, "3c905-tpo", "3Com900-TPO"), /* 10 Base TPO */
818 PCI_ROM(0x10b7, 0x9001, "3c905-t4", "3Com900-Combo"), /* 10/100 T4 */
819 PCI_ROM(0x10b7, 0x9050, "3c905-tpo100", "3Com905-TX"), /* 100 Base TX / 10/100 TPO */
820 PCI_ROM(0x10b7, 0x9051, "3c905-combo", "3Com905-T4"), /* 100 Base T4 / 10 Base Combo */
821 /* Newer 90xB revisions: */
822 PCI_ROM(0x10b7, 0x9004, "3c905b-tpo", "3Com900B-TPO"), /* 10 Base TPO */
823 PCI_ROM(0x10b7, 0x9005, "3c905b-combo", "3Com900B-Combo"), /* 10 Base Combo */
824 PCI_ROM(0x10b7, 0x9006, "3c905b-tpb2", "3Com900B-2/T"), /* 10 Base TP and Base2 */
825 PCI_ROM(0x10b7, 0x900a, "3c905b-fl", "3Com900B-FL"), /* 10 Base FL */
826 PCI_ROM(0x10b7, 0x9055, "3c905b-tpo100", "3Com905B-TX"), /* 10/100 TPO */
827 PCI_ROM(0x10b7, 0x9056, "3c905b-t4", "3Com905B-T4"), /* 10/100 T4 */
828 PCI_ROM(0x10b7, 0x9058, "3c905b-9058", "3Com905B-9058"), /* Cyclone 10/100/BNC */
829 PCI_ROM(0x10b7, 0x905a, "3c905b-fx", "3Com905B-FL"), /* 100 Base FX / 10 Base FX */
830 /* Newer 90xC revision: */
831 PCI_ROM(0x10b7, 0x9200, "3c905c-tpo", "3Com905C-TXM"), /* 10/100 TPO (3C905C-TXM) */
832 PCI_ROM(0x10b7, 0x9202, "3c920b-emb-ati", "3c920B-EMB-WNM (ATI Radeon 9100 IGP)"), /* 3c920B-EMB-WNM (ATI Radeon 9100 IGP) */
833 PCI_ROM(0x10b7, 0x9210, "3c920b-emb-wnm","3Com20B-EMB WNM"),
834 PCI_ROM(0x10b7, 0x9800, "3c980", "3Com980-Cyclone"), /* Cyclone */
835 PCI_ROM(0x10b7, 0x9805, "3c9805", "3Com9805"), /* Dual Port Server Cyclone */
836 PCI_ROM(0x10b7, 0x7646, "3csoho100-tx", "3CSOHO100-TX"), /* Hurricane */
837 PCI_ROM(0x10b7, 0x4500, "3c450", "3Com450 HomePNA Tornado"),
838 PCI_ROM(0x10b7, 0x1201, "3c982a", "3Com982A"),
839 PCI_ROM(0x10b7, 0x1202, "3c982b", "3Com982B"),
842 struct pci_driver a3c90x_driver = {
846 .id_count = sizeof(_pci_ids)/sizeof(_pci_ids[0]),