2 Ported to U-Boot by Christian Pellegrin <chri@ascensit.com>
4 Based on sources from the Linux kernel (pcnet_cs.c, 8390.h) and
5 eCOS(if_dp83902a.c, if_dp83902a.h). Both of these 2 wonderful world
6 are GPL, so this is, of course, GPL.
9 ==========================================================================
13 Ethernet device driver for NS DP83902a ethernet controller
15 ==========================================================================
16 ####ECOSGPLCOPYRIGHTBEGIN####
17 -------------------------------------------
18 This file is part of eCos, the Embedded Configurable Operating System.
19 Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
21 eCos is free software; you can redistribute it and/or modify it under
22 the terms of the GNU General Public License as published by the Free
23 Software Foundation; either version 2 or (at your option) any later version.
25 eCos is distributed in the hope that it will be useful, but WITHOUT ANY
26 WARRANTY; without even the implied warranty of MERCHANTABILITY or
27 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
30 You should have received a copy of the GNU General Public License along
31 with eCos; if not, write to the Free Software Foundation, Inc.,
32 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
34 As a special exception, if other files instantiate templates or use macros
35 or inline functions from this file, or you compile this file and link it
36 with other works to produce a work based on this file, this file does not
37 by itself cause the resulting work to be covered by the GNU General Public
38 License. However the source code for this file must still be made available
39 in accordance with section (3) of the GNU General Public License.
41 This exception does not invalidate any other reasons why a work based on
42 this file might be covered by the GNU General Public License.
44 Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
45 at http://sources.redhat.com/ecos/ecos-license/
46 -------------------------------------------
47 ####ECOSGPLCOPYRIGHTEND####
48 ####BSDCOPYRIGHTBEGIN####
50 -------------------------------------------
52 Portions of this software may have been derived from OpenBSD or other sources,
53 and are covered by the appropriate copyright disclaimers included herein.
55 -------------------------------------------
57 ####BSDCOPYRIGHTEND####
58 ==========================================================================
59 #####DESCRIPTIONBEGIN####
62 Contributors: gthomas, jskov, rsandifo
67 FIXME: Will fail if pinged with large packets (1520 bytes)
71 ####DESCRIPTIONEND####
74 ==========================================================================
83 #ifdef CONFIG_DRIVER_NE2000
85 /* wor around udelay resetting OCR */
86 static void my_udelay(long us) {
89 tmo = get_timer (0) + us * CFG_HZ / 1000000; /* will this be much greater than 0 ? */
90 while (get_timer (0) < tmo);
93 #define mdelay(n) my_udelay((n)*1000)
95 /* forward definition of function used for the uboot interface */
96 void uboot_push_packet_len(int len);
97 void uboot_push_tx_done(int key, int val);
99 /* timeout for tx/rx in s */
102 #define ETHER_ADDR_LEN 6
105 ------------------------------------------------------------------------
109 0 disables all debug output
110 1 for process debug output
111 2 for added data IO output: get_reg, put_reg
112 4 for packet allocation/free output
113 8 for only startup status, so we can tell we're installed OK
115 /*#define DEBUG 0xf*/
119 #define DEBUG_FUNCTION() do { printf("%s\n", __FUNCTION__); } while (0)
120 #define DEBUG_LINE() do { printf("%d\n", __LINE__); } while (0)
122 #define DEBUG_FUNCTION() do {} while(0)
123 #define DEBUG_LINE() do {} while(0)
129 #define PRINTK(args...) printf(args)
131 #define PRINTK(args...)
134 static dp83902a_priv_data_t nic; /* just one instance of the card supported */
139 dp83902a_priv_data_t *dp = &nic;
146 if (!base) return false; /* No device found */
151 DP_OUT(base, DP_CR, DP_CR_NODMA | DP_CR_PAGE1); /* Select page 1 */
152 /* Use the address from the serial EEPROM */
153 for (i = 0; i < 6; i++)
154 DP_IN(base, DP_P1_PAR0+i, dp->esa[i]);
155 DP_OUT(base, DP_CR, DP_CR_NODMA | DP_CR_PAGE0); /* Select page 0 */
157 printf("NE2000 - %s ESA: %02x:%02x:%02x:%02x:%02x:%02x\n",
172 dp83902a_priv_data_t *dp = &nic;
173 cyg_uint8 *base = dp->base;
177 DP_OUT(base, DP_CR, DP_CR_PAGE0 | DP_CR_NODMA | DP_CR_STOP); /* Brutal */
178 DP_OUT(base, DP_ISR, 0xFF); /* Clear any pending interrupts */
179 DP_OUT(base, DP_IMR, 0x00); /* Disable all interrupts */
185 This function is called to "start up" the interface. It may be called
186 multiple times, even when the hardware is already running. It will be
187 called whenever something "hardware oriented" changes and should leave
188 the hardware ready to send/receive packets.
191 dp83902a_start(unsigned char * enaddr)
193 dp83902a_priv_data_t *dp = &nic;
194 cyg_uint8 *base = dp->base;
199 DP_OUT(base, DP_CR, DP_CR_PAGE0 | DP_CR_NODMA | DP_CR_STOP); /* Brutal */
200 DP_OUT(base, DP_DCR, DP_DCR_INIT);
201 DP_OUT(base, DP_RBCH, 0); /* Remote byte count */
202 DP_OUT(base, DP_RBCL, 0);
203 DP_OUT(base, DP_RCR, DP_RCR_MON); /* Accept no packets */
204 DP_OUT(base, DP_TCR, DP_TCR_LOCAL); /* Transmitter [virtually] off */
205 DP_OUT(base, DP_TPSR, dp->tx_buf1); /* Transmitter start page */
206 dp->tx1 = dp->tx2 = 0;
207 dp->tx_next = dp->tx_buf1;
208 dp->tx_started = false;
209 DP_OUT(base, DP_PSTART, dp->rx_buf_start); /* Receive ring start page */
210 DP_OUT(base, DP_BNDRY, dp->rx_buf_end-1); /* Receive ring boundary */
211 DP_OUT(base, DP_PSTOP, dp->rx_buf_end); /* Receive ring end page */
212 dp->rx_next = dp->rx_buf_start-1;
213 DP_OUT(base, DP_ISR, 0xFF); /* Clear any pending interrupts */
214 DP_OUT(base, DP_IMR, DP_IMR_All); /* Enable all interrupts */
215 DP_OUT(base, DP_CR, DP_CR_NODMA | DP_CR_PAGE1 | DP_CR_STOP); /* Select page 1 */
216 DP_OUT(base, DP_P1_CURP, dp->rx_buf_start); /* Current page - next free page for Rx */
217 for (i = 0; i < ETHER_ADDR_LEN; i++) {
218 DP_OUT(base, DP_P1_PAR0+i, enaddr[i]);
220 /* Enable and start device */
221 DP_OUT(base, DP_CR, DP_CR_PAGE0 | DP_CR_NODMA | DP_CR_START);
222 DP_OUT(base, DP_TCR, DP_TCR_NORMAL); /* Normal transmit operations */
223 DP_OUT(base, DP_RCR, DP_RCR_AB); /* Accept broadcast, no errors, no multicast */
228 This routine is called to start the transmitter. It is split out from the
229 data handling routine so it may be called either when data becomes first
230 available or when an Tx interrupt occurs
234 dp83902a_start_xmit(int start_page, int len)
236 dp83902a_priv_data_t *dp = (dp83902a_priv_data_t *) &nic;
237 cyg_uint8 *base = dp->base;
242 printf("Tx pkt %d len %d\n", start_page, len);
244 printf("TX already started?!?\n");
247 DP_OUT(base, DP_ISR, (DP_ISR_TxP | DP_ISR_TxE));
248 DP_OUT(base, DP_CR, DP_CR_PAGE0 | DP_CR_NODMA | DP_CR_START);
249 DP_OUT(base, DP_TBCL, len & 0xFF);
250 DP_OUT(base, DP_TBCH, len >> 8);
251 DP_OUT(base, DP_TPSR, start_page);
252 DP_OUT(base, DP_CR, DP_CR_NODMA | DP_CR_TXPKT | DP_CR_START);
254 dp->tx_started = true;
258 This routine is called to send data to the hardware. It is known a-priori
259 that there is free buffer space (dp->tx_next).
262 dp83902a_send(unsigned char *data, int total_len, unsigned long key)
264 struct dp83902a_priv_data *dp = (struct dp83902a_priv_data *) &nic;
265 cyg_uint8 *base = dp->base;
266 int len, start_page, pkt_len, i, isr;
273 len = pkt_len = total_len;
274 if (pkt_len < IEEE_8023_MIN_FRAME) pkt_len = IEEE_8023_MIN_FRAME;
276 start_page = dp->tx_next;
277 if (dp->tx_next == dp->tx_buf1) {
278 dp->tx1 = start_page;
279 dp->tx1_len = pkt_len;
281 dp->tx_next = dp->tx_buf2;
283 dp->tx2 = start_page;
284 dp->tx2_len = pkt_len;
286 dp->tx_next = dp->tx_buf1;
290 printf("TX prep page %d len %d\n", start_page, pkt_len);
293 DP_OUT(base, DP_ISR, DP_ISR_RDC); /* Clear end of DMA */
295 /* Dummy read. The manual sez something slightly different, */
296 /* but the code is extended a bit to do what Hitachi's monitor */
297 /* does (i.e., also read data). */
302 DP_OUT(base, DP_RSAL, 0x100-len);
303 DP_OUT(base, DP_RSAH, (start_page-1) & 0xff);
304 DP_OUT(base, DP_RBCL, len);
305 DP_OUT(base, DP_RBCH, 0);
306 DP_OUT(base, DP_CR, DP_CR_PAGE0 | DP_CR_RDMA | DP_CR_START);
307 DP_IN_DATA(dp->data, tmp);
310 #ifdef CYGHWR_NS_DP83902A_PLF_BROKEN_TX_DMA
311 /* Stall for a bit before continuing to work around random data */
312 /* corruption problems on some platforms. */
313 CYGACC_CALL_IF_DELAY_US(1);
316 /* Send data to device buffer(s) */
317 DP_OUT(base, DP_RSAL, 0);
318 DP_OUT(base, DP_RSAH, start_page);
319 DP_OUT(base, DP_RBCL, pkt_len & 0xFF);
320 DP_OUT(base, DP_RBCH, pkt_len >> 8);
321 DP_OUT(base, DP_CR, DP_CR_WDMA | DP_CR_START);
323 /* Put data into buffer */
325 printf(" sg buf %08lx len %08x\n ", (unsigned long) data, len);
330 printf(" %02x", *data);
331 if (0 == (++dx % 16)) printf("\n ");
333 DP_OUT_DATA(dp->data, *data++);
339 if (total_len < pkt_len) {
341 printf(" + %d bytes of padding\n", pkt_len - total_len);
343 /* Padding to 802.3 length was required */
344 for (i = total_len; i < pkt_len;) {
346 DP_OUT_DATA(dp->data, 0);
350 #ifdef CYGHWR_NS_DP83902A_PLF_BROKEN_TX_DMA
351 /* After last data write, delay for a bit before accessing the */
352 /* device again, or we may get random data corruption in the last */
353 /* datum (on some platforms). */
354 CYGACC_CALL_IF_DELAY_US(1);
357 /* Wait for DMA to complete */
359 DP_IN(base, DP_ISR, isr);
360 } while ((isr & DP_ISR_RDC) == 0);
361 /* Then disable DMA */
362 DP_OUT(base, DP_CR, DP_CR_PAGE0 | DP_CR_NODMA | DP_CR_START);
364 /* Start transmit if not already going */
365 if (!dp->tx_started) {
366 if (start_page == dp->tx1) {
367 dp->tx_int = 1; /* Expecting interrupt from BUF1 */
369 dp->tx_int = 2; /* Expecting interrupt from BUF2 */
371 dp83902a_start_xmit(start_page, pkt_len);
376 This function is called when a packet has been received. It's job is
377 to prepare to unload the packet from the hardware. Once the length of
378 the packet is known, the upper layer of the driver can be told. When
379 the upper layer is ready to unload the packet, the internal function
380 'dp83902a_recv' will be called to actually fetch it from the hardware.
383 dp83902a_RxEvent(void)
385 struct dp83902a_priv_data *dp = (struct dp83902a_priv_data *) &nic;
386 cyg_uint8 *base = dp->base;
388 unsigned char rcv_hdr[4];
389 int i, len, pkt, cur;
393 DP_IN(base, DP_RSR, rsr);
395 /* Read incoming packet header */
396 DP_OUT(base, DP_CR, DP_CR_PAGE1 | DP_CR_NODMA | DP_CR_START);
397 DP_IN(base, DP_P1_CURP, cur);
398 DP_OUT(base, DP_P1_CR, DP_CR_PAGE0 | DP_CR_NODMA | DP_CR_START);
399 DP_IN(base, DP_BNDRY, pkt);
402 if (pkt == dp->rx_buf_end)
403 pkt = dp->rx_buf_start;
408 DP_OUT(base, DP_RBCL, sizeof(rcv_hdr));
409 DP_OUT(base, DP_RBCH, 0);
410 DP_OUT(base, DP_RSAL, 0);
411 DP_OUT(base, DP_RSAH, pkt);
412 if (dp->rx_next == pkt) {
413 if (cur == dp->rx_buf_start)
414 DP_OUT(base, DP_BNDRY, dp->rx_buf_end-1);
416 DP_OUT(base, DP_BNDRY, cur-1); /* Update pointer */
420 DP_OUT(base, DP_ISR, DP_ISR_RDC); /* Clear end of DMA */
421 DP_OUT(base, DP_CR, DP_CR_RDMA | DP_CR_START);
422 #ifdef CYGHWR_NS_DP83902A_PLF_BROKEN_RX_DMA
423 CYGACC_CALL_IF_DELAY_US(10);
426 for (i = 0; i < sizeof(rcv_hdr);) {
427 DP_IN_DATA(dp->data, rcv_hdr[i++]);
431 printf("rx hdr %02x %02x %02x %02x\n",
432 rcv_hdr[0], rcv_hdr[1], rcv_hdr[2], rcv_hdr[3]);
434 len = ((rcv_hdr[3] << 8) | rcv_hdr[2]) - sizeof(rcv_hdr);
435 uboot_push_packet_len(len);
436 if (rcv_hdr[1] == dp->rx_buf_start)
437 DP_OUT(base, DP_BNDRY, dp->rx_buf_end-1);
439 DP_OUT(base, DP_BNDRY, rcv_hdr[1]-1); /* Update pointer */
444 This function is called as a result of the "eth_drv_recv()" call above.
445 It's job is to actually fetch data for a packet from the hardware once
446 memory buffers have been allocated for the packet. Note that the buffers
447 may come in pieces, using a scatter-gather list. This allows for more
448 efficient processing in the upper layers of the stack.
451 dp83902a_recv(unsigned char *data, int len)
453 struct dp83902a_priv_data *dp = (struct dp83902a_priv_data *) &nic;
454 cyg_uint8 *base = dp->base;
456 cyg_uint8 saved_char = 0;
465 printf("Rx packet %d length %d\n", dp->rx_next, len);
468 /* Read incoming packet data */
469 DP_OUT(base, DP_CR, DP_CR_PAGE0 | DP_CR_NODMA | DP_CR_START);
470 DP_OUT(base, DP_RBCL, len & 0xFF);
471 DP_OUT(base, DP_RBCH, len >> 8);
472 DP_OUT(base, DP_RSAL, 4); /* Past header */
473 DP_OUT(base, DP_RSAH, dp->rx_next);
474 DP_OUT(base, DP_ISR, DP_ISR_RDC); /* Clear end of DMA */
475 DP_OUT(base, DP_CR, DP_CR_RDMA | DP_CR_START);
476 #ifdef CYGHWR_NS_DP83902A_PLF_BROKEN_RX_DMA
477 CYGACC_CALL_IF_DELAY_US(10);
481 for (i = 0; i < 1; i++) {
485 printf(" sg buf %08lx len %08x \n", (unsigned long) data, mlen);
489 /* Saved byte from previous loop? */
491 *data++ = saved_char;
499 DP_IN_DATA(dp->data, tmp);
501 printf(" %02x", tmp);
502 if (0 == (++dx % 16)) printf("\n ");
516 dp83902a_TxEvent(void)
518 struct dp83902a_priv_data *dp = (struct dp83902a_priv_data *) &nic;
519 cyg_uint8 *base = dp->base;
525 DP_IN(base, DP_TSR, tsr);
526 if (dp->tx_int == 1) {
533 /* Start next packet if one is ready */
534 dp->tx_started = false;
536 dp83902a_start_xmit(dp->tx1, dp->tx1_len);
538 } else if (dp->tx2) {
539 dp83902a_start_xmit(dp->tx2, dp->tx2_len);
544 /* Tell higher level we sent this packet */
545 uboot_push_tx_done(key, 0);
548 /* Read the tally counters to clear them. Called in response to a CNT */
551 dp83902a_ClearCounters(void)
553 struct dp83902a_priv_data *dp = (struct dp83902a_priv_data *) &nic;
554 cyg_uint8 *base = dp->base;
555 cyg_uint8 cnt1, cnt2, cnt3;
557 DP_IN(base, DP_FER, cnt1);
558 DP_IN(base, DP_CER, cnt2);
559 DP_IN(base, DP_MISSED, cnt3);
560 DP_OUT(base, DP_ISR, DP_ISR_CNT);
563 /* Deal with an overflow condition. This code follows the procedure set */
564 /* out in section 7.0 of the datasheet. */
566 dp83902a_Overflow(void)
568 struct dp83902a_priv_data *dp = (struct dp83902a_priv_data *)&nic;
569 cyg_uint8 *base = dp->base;
572 /* Issue a stop command and wait 1.6ms for it to complete. */
573 DP_OUT(base, DP_CR, DP_CR_STOP | DP_CR_NODMA);
574 CYGACC_CALL_IF_DELAY_US(1600);
576 /* Clear the remote byte counter registers. */
577 DP_OUT(base, DP_RBCL, 0);
578 DP_OUT(base, DP_RBCH, 0);
580 /* Enter loopback mode while we clear the buffer. */
581 DP_OUT(base, DP_TCR, DP_TCR_LOCAL);
582 DP_OUT(base, DP_CR, DP_CR_START | DP_CR_NODMA);
584 /* Read in as many packets as we can and acknowledge any and receive */
585 /* interrupts. Since the buffer has overflowed, a receive event of */
586 /* some kind will have occured. */
588 DP_OUT(base, DP_ISR, DP_ISR_RxP|DP_ISR_RxE);
590 /* Clear the overflow condition and leave loopback mode. */
591 DP_OUT(base, DP_ISR, DP_ISR_OFLW);
592 DP_OUT(base, DP_TCR, DP_TCR_NORMAL);
594 /* If a transmit command was issued, but no transmit event has occured, */
595 /* restart it here. */
596 DP_IN(base, DP_ISR, isr);
597 if (dp->tx_started && !(isr & (DP_ISR_TxP|DP_ISR_TxE))) {
598 DP_OUT(base, DP_CR, DP_CR_NODMA | DP_CR_TXPKT | DP_CR_START);
605 struct dp83902a_priv_data *dp = (struct dp83902a_priv_data *) &nic;
606 cyg_uint8 *base = dp->base;
609 DP_OUT(base, DP_CR, DP_CR_NODMA | DP_CR_PAGE0 | DP_CR_START);
610 DP_IN(base, DP_ISR, isr);
612 /* The CNT interrupt triggers when the MSB of one of the error */
613 /* counters is set. We don't much care about these counters, but */
614 /* we should read their values to reset them. */
615 if (isr & DP_ISR_CNT) {
616 dp83902a_ClearCounters();
618 /* Check for overflow. It's a special case, since there's a */
619 /* particular procedure that must be followed to get back into */
620 /* a running state.a */
621 if (isr & DP_ISR_OFLW) {
624 /* Other kinds of interrupts can be acknowledged simply by */
625 /* clearing the relevant bits of the ISR. Do that now, then */
626 /* handle the interrupts we care about. */
627 DP_OUT(base, DP_ISR, isr); /* Clear set bits */
628 if (!dp->running) break; /* Is this necessary? */
629 /* Check for tx_started on TX event since these may happen */
630 /* spuriously it seems. */
631 if (isr & (DP_ISR_TxP|DP_ISR_TxE) && dp->tx_started) {
634 if (isr & (DP_ISR_RxP|DP_ISR_RxE)) {
638 DP_IN(base, DP_ISR, isr);
642 /* find prom (taken from pc_net_cs.c from Linux) */
646 typedef struct hw_info_t {
652 #define DELAY_OUTPUT 0x01
653 #define HAS_MISC_REG 0x02
654 #define USE_BIG_BUF 0x04
655 #define HAS_IBM_MISC 0x08
656 #define IS_DL10019 0x10
657 #define IS_DL10022 0x20
659 #define USE_SHMEM 0x80 /* autodetected */
661 #define AM79C9XX_HOME_PHY 0x00006B90 /* HomePNA PHY */
662 #define AM79C9XX_ETH_PHY 0x00006B70 /* 10baseT PHY */
663 #define MII_PHYID_REV_MASK 0xfffffff0
664 #define MII_PHYID_REG1 0x02
665 #define MII_PHYID_REG2 0x03
667 static hw_info_t hw_info[] = {
668 { /* Accton EN2212 */ 0x0ff0, 0x00, 0x00, 0xe8, DELAY_OUTPUT },
669 { /* Allied Telesis LA-PCM */ 0x0ff0, 0x00, 0x00, 0xf4, 0 },
670 { /* APEX MultiCard */ 0x03f4, 0x00, 0x20, 0xe5, 0 },
671 { /* ASANTE FriendlyNet */ 0x4910, 0x00, 0x00, 0x94,
672 DELAY_OUTPUT | HAS_IBM_MISC },
673 { /* Danpex EN-6200P2 */ 0x0110, 0x00, 0x40, 0xc7, 0 },
674 { /* DataTrek NetCard */ 0x0ff0, 0x00, 0x20, 0xe8, 0 },
675 { /* Dayna CommuniCard E */ 0x0110, 0x00, 0x80, 0x19, 0 },
676 { /* D-Link DE-650 */ 0x0040, 0x00, 0x80, 0xc8, 0 },
677 { /* EP-210 Ethernet */ 0x0110, 0x00, 0x40, 0x33, 0 },
678 { /* EP4000 Ethernet */ 0x01c0, 0x00, 0x00, 0xb4, 0 },
679 { /* Epson EEN10B */ 0x0ff0, 0x00, 0x00, 0x48,
680 HAS_MISC_REG | HAS_IBM_MISC },
681 { /* ELECOM Laneed LD-CDWA */ 0xb8, 0x08, 0x00, 0x42, 0 },
682 { /* Hypertec Ethernet */ 0x01c0, 0x00, 0x40, 0x4c, 0 },
683 { /* IBM CCAE */ 0x0ff0, 0x08, 0x00, 0x5a,
684 HAS_MISC_REG | HAS_IBM_MISC },
685 { /* IBM CCAE */ 0x0ff0, 0x00, 0x04, 0xac,
686 HAS_MISC_REG | HAS_IBM_MISC },
687 { /* IBM CCAE */ 0x0ff0, 0x00, 0x06, 0x29,
688 HAS_MISC_REG | HAS_IBM_MISC },
689 { /* IBM FME */ 0x0374, 0x08, 0x00, 0x5a,
690 HAS_MISC_REG | HAS_IBM_MISC },
691 { /* IBM FME */ 0x0374, 0x00, 0x04, 0xac,
692 HAS_MISC_REG | HAS_IBM_MISC },
693 { /* Kansai KLA-PCM/T */ 0x0ff0, 0x00, 0x60, 0x87,
694 HAS_MISC_REG | HAS_IBM_MISC },
695 { /* NSC DP83903 */ 0x0374, 0x08, 0x00, 0x17,
696 HAS_MISC_REG | HAS_IBM_MISC },
697 { /* NSC DP83903 */ 0x0374, 0x00, 0xc0, 0xa8,
698 HAS_MISC_REG | HAS_IBM_MISC },
699 { /* NSC DP83903 */ 0x0374, 0x00, 0xa0, 0xb0,
700 HAS_MISC_REG | HAS_IBM_MISC },
701 { /* NSC DP83903 */ 0x0198, 0x00, 0x20, 0xe0,
702 HAS_MISC_REG | HAS_IBM_MISC },
703 { /* I-O DATA PCLA/T */ 0x0ff0, 0x00, 0xa0, 0xb0, 0 },
704 { /* Katron PE-520 */ 0x0110, 0x00, 0x40, 0xf6, 0 },
705 { /* Kingston KNE-PCM/x */ 0x0ff0, 0x00, 0xc0, 0xf0,
706 HAS_MISC_REG | HAS_IBM_MISC },
707 { /* Kingston KNE-PCM/x */ 0x0ff0, 0xe2, 0x0c, 0x0f,
708 HAS_MISC_REG | HAS_IBM_MISC },
709 { /* Kingston KNE-PC2 */ 0x0180, 0x00, 0xc0, 0xf0, 0 },
710 { /* Maxtech PCN2000 */ 0x5000, 0x00, 0x00, 0xe8, 0 },
711 { /* NDC Instant-Link */ 0x003a, 0x00, 0x80, 0xc6, 0 },
712 { /* NE2000 Compatible */ 0x0ff0, 0x00, 0xa0, 0x0c, 0 },
713 { /* Network General Sniffer */ 0x0ff0, 0x00, 0x00, 0x65,
714 HAS_MISC_REG | HAS_IBM_MISC },
715 { /* Panasonic VEL211 */ 0x0ff0, 0x00, 0x80, 0x45,
716 HAS_MISC_REG | HAS_IBM_MISC },
717 { /* PreMax PE-200 */ 0x07f0, 0x00, 0x20, 0xe0, 0 },
718 { /* RPTI EP400 */ 0x0110, 0x00, 0x40, 0x95, 0 },
719 { /* SCM Ethernet */ 0x0ff0, 0x00, 0x20, 0xcb, 0 },
720 { /* Socket EA */ 0x4000, 0x00, 0xc0, 0x1b,
721 DELAY_OUTPUT | HAS_MISC_REG | USE_BIG_BUF },
722 { /* Socket LP-E CF+ */ 0x01c0, 0x00, 0xc0, 0x1b, 0 },
723 { /* SuperSocket RE450T */ 0x0110, 0x00, 0xe0, 0x98, 0 },
724 { /* Volktek NPL-402CT */ 0x0060, 0x00, 0x40, 0x05, 0 },
725 { /* NEC PC-9801N-J12 */ 0x0ff0, 0x00, 0x00, 0x4c, 0 },
726 { /* PCMCIA Technology OEM */ 0x01c8, 0x00, 0xa0, 0x0c, 0 }
729 #define NR_INFO (sizeof(hw_info)/sizeof(hw_info_t))
731 static hw_info_t default_info = { 0, 0, 0, 0, 0 };
733 unsigned char dev_addr[6];
735 #define PCNET_CMD 0x00
736 #define PCNET_DATAPORT 0x10 /* NatSemi-defined port window offset. */
737 #define PCNET_RESET 0x1f /* Issue a read to reset, a write to clear. */
738 #define PCNET_MISC 0x18 /* For IBM CCAE and Socket EA cards */
740 unsigned long nic_base;
742 static void pcnet_reset_8390(void)
746 PRINTK("nic base is %lx\n", nic_base);
749 n2k_outb(E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD);
750 PRINTK("cmd (at %lx) is %x\n", nic_base+ E8390_CMD, n2k_inb(E8390_CMD));
751 n2k_outb(E8390_NODMA+E8390_PAGE1+E8390_STOP, E8390_CMD);
752 PRINTK("cmd (at %lx) is %x\n", nic_base+ E8390_CMD, n2k_inb(E8390_CMD));
753 n2k_outb(E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD);
754 PRINTK("cmd (at %lx) is %x\n", nic_base+ E8390_CMD, n2k_inb(E8390_CMD));
756 n2k_outb(E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD);
758 n2k_outb(n2k_inb(nic_base + PCNET_RESET), PCNET_RESET);
760 for (i = 0; i < 100; i++) {
761 if ((r = (n2k_inb(EN0_ISR) & ENISR_RESET)) != 0)
763 PRINTK("got %x in reset\n", r);
766 n2k_outb(ENISR_RESET, EN0_ISR); /* Ack intr. */
769 printf("pcnet_reset_8390() did not complete.\n");
770 } /* pcnet_reset_8390 */
772 static hw_info_t * get_prom(void ) {
773 unsigned char prom[32];
776 u_char value, offset;
778 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
779 {0x48, EN0_DCFG}, /* Set byte-wide (0x48) access. */
780 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
782 {0x00, EN0_IMR}, /* Mask completion irq. */
784 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
785 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
788 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
790 {E8390_RREAD+E8390_START, E8390_CMD},
793 PRINTK("trying to get MAC via prom reading\n");
799 for (i = 0; i < sizeof(program_seq)/sizeof(program_seq[0]); i++)
800 n2k_outb(program_seq[i].value, program_seq[i].offset);
803 for (i = 0; i < 32; i++) {
804 prom[i] = n2k_inb(PCNET_DATAPORT);
805 PRINTK(" %02x", prom[i]);
808 for (i = 0; i < NR_INFO; i++) {
809 if ((prom[0] == hw_info[i].a0) &&
810 (prom[2] == hw_info[i].a1) &&
811 (prom[4] == hw_info[i].a2)) {
812 PRINTK("matched board %d\n", i);
816 if ((i < NR_INFO) || ((prom[28] == 0x57) && (prom[30] == 0x57))) {
817 for (j = 0; j < 6; j++)
818 dev_addr[j] = prom[j<<1];
819 PRINTK("on exit i is %d/%ld\n", i, NR_INFO);
820 PRINTK("MAC address is %02x:%02x:%02x:%02x:%02x:%02x\n",
821 dev_addr[0],dev_addr[1],dev_addr[2],dev_addr[3],dev_addr[4],dev_addr[5]);
822 return (i < NR_INFO) ? hw_info+i : &default_info;
827 /* U-boot specific routines */
831 static unsigned char *pbuf = NULL;
835 static int pkey = -1;
837 void uboot_push_packet_len(int len) {
838 PRINTK("pushed len = %d, nrx = %d\n", len, nrx);
840 printf("NE2000: packet too big\n");
844 printf("losing packets in rx\n");
848 dp83902a_recv(&pbuf[nrx*2000], len);
852 void uboot_push_tx_done(int key, int val) {
853 PRINTK("pushed key = %d\n", key);
857 int eth_init(bd_t *bd) {
858 static hw_info_t * r;
861 PRINTK("### eth_init\n");
864 pbuf = malloc(NB*2000);
866 printf("Cannot allocate rx buffers\n");
871 #ifdef CONFIG_DRIVER_NE2000_CCR
873 volatile unsigned char *p = (volatile unsigned char *) CONFIG_DRIVER_NE2000_CCR;
875 PRINTK("CCR before is %x\n", *p);
876 *p = CONFIG_DRIVER_NE2000_VAL;
877 PRINTK("CCR after is %x\n", *p);
881 nic_base = CONFIG_DRIVER_NE2000_BASE;
882 nic.base = (cyg_uint8 *) CONFIG_DRIVER_NE2000_BASE;
888 sprintf (ethaddr, "%02X:%02X:%02X:%02X:%02X:%02X",
889 dev_addr[0], dev_addr[1],
890 dev_addr[2], dev_addr[3],
891 dev_addr[4], dev_addr[5]) ;
892 PRINTK("Set environment from HW MAC addr = \"%s\"\n", ethaddr);
893 setenv ("ethaddr", ethaddr);
897 nic.data = nic.base + DP_DATA;
900 nic.rx_buf_start = 0x50;
901 nic.rx_buf_end = 0x80;
903 if (dp83902a_init() == false)
905 dp83902a_start(dev_addr);
911 PRINTK("### eth_halt\n");
919 PRINTK("### eth_rx\n");
921 tmo = get_timer (0) + TOUT * CFG_HZ;
925 for(j=0; j<nrx; j++) {
926 NetReceive(&pbuf[j*2000], plen[j]);
931 if (get_timer (0) >= tmo) {
932 printf("timeout during rx\n");
939 int eth_send(volatile void *packet, int length) {
942 PRINTK("### eth_send\n");
946 dp83902a_send((unsigned char *) packet, length, 666);
947 tmo = get_timer (0) + TOUT * CFG_HZ;
951 PRINTK("Packet sucesfully sent\n");
954 if (get_timer (0) >= tmo) {
955 printf("transmission error (timoeut)\n");