ne2000.c revision 1.21 1 1.21 enami /* $NetBSD: ne2000.c,v 1.21 1999/09/27 04:52:19 enami Exp $ */
2 1.2 thorpej
3 1.2 thorpej /*-
4 1.8 thorpej * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
5 1.2 thorpej * All rights reserved.
6 1.2 thorpej *
7 1.2 thorpej * This code is derived from software contributed to The NetBSD Foundation
8 1.2 thorpej * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
9 1.2 thorpej * NASA Ames Research Center.
10 1.2 thorpej *
11 1.2 thorpej * Redistribution and use in source and binary forms, with or without
12 1.2 thorpej * modification, are permitted provided that the following conditions
13 1.2 thorpej * are met:
14 1.2 thorpej * 1. Redistributions of source code must retain the above copyright
15 1.2 thorpej * notice, this list of conditions and the following disclaimer.
16 1.2 thorpej * 2. Redistributions in binary form must reproduce the above copyright
17 1.2 thorpej * notice, this list of conditions and the following disclaimer in the
18 1.2 thorpej * documentation and/or other materials provided with the distribution.
19 1.2 thorpej * 3. All advertising materials mentioning features or use of this software
20 1.2 thorpej * must display the following acknowledgement:
21 1.2 thorpej * This product includes software developed by the NetBSD
22 1.2 thorpej * Foundation, Inc. and its contributors.
23 1.2 thorpej * 4. Neither the name of The NetBSD Foundation nor the names of its
24 1.2 thorpej * contributors may be used to endorse or promote products derived
25 1.2 thorpej * from this software without specific prior written permission.
26 1.2 thorpej *
27 1.2 thorpej * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28 1.2 thorpej * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 1.2 thorpej * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 1.2 thorpej * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31 1.2 thorpej * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 1.2 thorpej * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 1.2 thorpej * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 1.2 thorpej * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 1.2 thorpej * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 1.2 thorpej * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 1.2 thorpej * POSSIBILITY OF SUCH DAMAGE.
38 1.2 thorpej */
39 1.2 thorpej
40 1.2 thorpej /*
41 1.2 thorpej * Device driver for National Semiconductor DS8390/WD83C690 based ethernet
42 1.2 thorpej * adapters.
43 1.2 thorpej *
44 1.2 thorpej * Copyright (c) 1994, 1995 Charles M. Hannum. All rights reserved.
45 1.2 thorpej *
46 1.2 thorpej * Copyright (C) 1993, David Greenman. This software may be used, modified,
47 1.2 thorpej * copied, distributed, and sold, in both source and binary form provided that
48 1.2 thorpej * the above copyright and these terms are retained. Under no circumstances is
49 1.2 thorpej * the author responsible for the proper functioning of this software, nor does
50 1.2 thorpej * the author assume any responsibility for damages incurred with its use.
51 1.2 thorpej */
52 1.2 thorpej
53 1.2 thorpej /*
54 1.2 thorpej * Common code shared by all NE2000-compatible Ethernet interfaces.
55 1.2 thorpej */
56 1.2 thorpej
57 1.2 thorpej #include <sys/param.h>
58 1.2 thorpej #include <sys/systm.h>
59 1.2 thorpej #include <sys/device.h>
60 1.2 thorpej #include <sys/socket.h>
61 1.2 thorpej #include <sys/mbuf.h>
62 1.2 thorpej #include <sys/syslog.h>
63 1.2 thorpej
64 1.2 thorpej #include <net/if.h>
65 1.2 thorpej #include <net/if_dl.h>
66 1.2 thorpej #include <net/if_types.h>
67 1.5 thorpej #include <net/if_media.h>
68 1.2 thorpej
69 1.2 thorpej #include <net/if_ether.h>
70 1.2 thorpej
71 1.16 pk #include <machine/bswap.h>
72 1.2 thorpej #include <machine/bus.h>
73 1.2 thorpej
74 1.11 sakamoto #ifndef __BUS_SPACE_HAS_STREAM_METHODS
75 1.10 sakamoto #define bus_space_write_stream_2 bus_space_write_2
76 1.10 sakamoto #define bus_space_write_multi_stream_2 bus_space_write_multi_2
77 1.10 sakamoto #define bus_space_read_multi_stream_2 bus_space_read_multi_2
78 1.11 sakamoto #endif /* __BUS_SPACE_HAS_STREAM_METHODS */
79 1.10 sakamoto
80 1.2 thorpej #include <dev/ic/dp8390reg.h>
81 1.2 thorpej #include <dev/ic/dp8390var.h>
82 1.2 thorpej
83 1.2 thorpej #include <dev/ic/ne2000reg.h>
84 1.2 thorpej #include <dev/ic/ne2000var.h>
85 1.17 mjacob
86 1.17 mjacob #if BYTE_ORDER == BIG_ENDIAN
87 1.17 mjacob #include <machine/bswap.h>
88 1.17 mjacob #endif
89 1.2 thorpej
90 1.2 thorpej int ne2000_write_mbuf __P((struct dp8390_softc *, struct mbuf *, int));
91 1.2 thorpej int ne2000_ring_copy __P((struct dp8390_softc *, int, caddr_t, u_short));
92 1.2 thorpej void ne2000_read_hdr __P((struct dp8390_softc *, int, struct dp8390_ring *));
93 1.2 thorpej int ne2000_test_mem __P((struct dp8390_softc *));
94 1.2 thorpej
95 1.2 thorpej void ne2000_writemem __P((bus_space_tag_t, bus_space_handle_t,
96 1.15 thorpej bus_space_tag_t, bus_space_handle_t, u_int8_t *, int, size_t,
97 1.15 thorpej int, int));
98 1.2 thorpej void ne2000_readmem __P((bus_space_tag_t, bus_space_handle_t,
99 1.2 thorpej bus_space_tag_t, bus_space_handle_t, int, u_int8_t *, size_t, int));
100 1.2 thorpej
101 1.2 thorpej void
102 1.14 thorpej ne2000_attach(nsc, myea, media, nmedia, defmedia)
103 1.2 thorpej struct ne2000_softc *nsc;
104 1.2 thorpej u_int8_t *myea;
105 1.14 thorpej int *media, nmedia, defmedia;
106 1.2 thorpej {
107 1.2 thorpej struct dp8390_softc *dsc = &nsc->sc_dp8390;
108 1.2 thorpej bus_space_tag_t nict = dsc->sc_regt;
109 1.2 thorpej bus_space_handle_t nich = dsc->sc_regh;
110 1.2 thorpej bus_space_tag_t asict = nsc->sc_asict;
111 1.2 thorpej bus_space_handle_t asich = nsc->sc_asich;
112 1.2 thorpej u_int8_t romdata[16];
113 1.2 thorpej int memsize, i, useword;
114 1.2 thorpej
115 1.2 thorpej /*
116 1.19 enami * Detect it again unless caller specified it; this gives us
117 1.19 enami * the memory size.
118 1.2 thorpej */
119 1.2 thorpej if (nsc->sc_type == 0) {
120 1.19 enami nsc->sc_type = ne2000_detect(nict, nich, asict, asich);
121 1.19 enami if (nsc->sc_type == 0) {
122 1.19 enami printf("%s: where did the card go?\n",
123 1.19 enami dsc->sc_dev.dv_xname);
124 1.19 enami return;
125 1.19 enami }
126 1.2 thorpej }
127 1.2 thorpej
128 1.20 enami useword = NE2000_USE_WORD(nsc->sc_type);
129 1.2 thorpej
130 1.2 thorpej dsc->cr_proto = ED_CR_RD2;
131 1.2 thorpej
132 1.2 thorpej /*
133 1.2 thorpej * DCR gets:
134 1.2 thorpej *
135 1.2 thorpej * FIFO threshold to 8, No auto-init Remote DMA,
136 1.2 thorpej * byte order=80x86.
137 1.2 thorpej *
138 1.2 thorpej * NE1000 gets byte-wide DMA, NE2000 gets word-wide DMA.
139 1.2 thorpej */
140 1.21 enami dsc->dcr_reg = ED_DCR_FT1 | ED_DCR_LS | (useword ? ED_DCR_WTS : 0);
141 1.2 thorpej
142 1.2 thorpej dsc->test_mem = ne2000_test_mem;
143 1.2 thorpej dsc->ring_copy = ne2000_ring_copy;
144 1.2 thorpej dsc->write_mbuf = ne2000_write_mbuf;
145 1.2 thorpej dsc->read_hdr = ne2000_read_hdr;
146 1.2 thorpej
147 1.2 thorpej /* Registers are linear. */
148 1.2 thorpej for (i = 0; i < 16; i++)
149 1.2 thorpej dsc->sc_reg_map[i] = i;
150 1.2 thorpej
151 1.2 thorpej /*
152 1.2 thorpej * 8k of memory plus an additional 8k if an NE2000.
153 1.2 thorpej */
154 1.2 thorpej memsize = 8192 + (nsc->sc_type == NE2000_TYPE_NE2000 ? 8192 : 0);
155 1.2 thorpej
156 1.2 thorpej /*
157 1.2 thorpej * NIC memory doens't start at zero on an NE board.
158 1.2 thorpej * The start address is tied to the bus width.
159 1.2 thorpej * (It happens to be computed the same way as mem size.)
160 1.2 thorpej */
161 1.2 thorpej dsc->mem_start = memsize;
162 1.2 thorpej
163 1.2 thorpej #ifdef GWETHER
164 1.2 thorpej {
165 1.2 thorpej int x, mstart = 0;
166 1.2 thorpej int8_t pbuf0[ED_PAGE_SIZE], pbuf[ED_PAGE_SIZE],
167 1.2 thorpej tbuf[ED_PAGE_SIZE];
168 1.2 thorpej
169 1.2 thorpej for (i = 0; i < ED_PAGE_SIZE; i++)
170 1.2 thorpej pbuf0[i] = 0;
171 1.2 thorpej
172 1.2 thorpej /* Search for the start of RAM. */
173 1.2 thorpej for (x = 1; x < 256; x++) {
174 1.2 thorpej ne2000_writemem(nict, nich, asict, asich, pbuf0,
175 1.15 thorpej x << ED_PAGE_SHIFT, ED_PAGE_SIZE, useword, 0);
176 1.2 thorpej ne2000_readmem(nict, nich, asict, asich,
177 1.2 thorpej x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, useword);
178 1.2 thorpej if (bcmp(pbuf0, tbuf, ED_PAGE_SIZE) == 0) {
179 1.2 thorpej for (i = 0; i < ED_PAGE_SIZE; i++)
180 1.2 thorpej pbuf[i] = 255 - x;
181 1.2 thorpej ne2000_writemem(nict, nich, asict, asich,
182 1.2 thorpej pbuf, x << ED_PAGE_SHIFT, ED_PAGE_SIZE,
183 1.15 thorpej useword, 0);
184 1.2 thorpej ne2000_readmem(nict, nich, asict, asich,
185 1.2 thorpej x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE,
186 1.2 thorpej useword);
187 1.2 thorpej if (bcmp(pbuf, tbuf, ED_PAGE_SIZE) == 0) {
188 1.2 thorpej mstart = x << ED_PAGE_SHIFT;
189 1.2 thorpej memsize = ED_PAGE_SIZE;
190 1.2 thorpej break;
191 1.2 thorpej }
192 1.2 thorpej }
193 1.2 thorpej }
194 1.2 thorpej
195 1.2 thorpej if (mstart == 0) {
196 1.2 thorpej printf("%s: cannot find start of RAM\n",
197 1.2 thorpej dsc->sc_dev.dv_xname);
198 1.2 thorpej return;
199 1.2 thorpej }
200 1.2 thorpej
201 1.2 thorpej /* Search for the end of RAM. */
202 1.2 thorpej for (++x; x < 256; x++) {
203 1.2 thorpej ne2000_writemem(nict, nich, asict, asich, pbuf0,
204 1.15 thorpej x << ED_PAGE_SHIFT, ED_PAGE_SIZE, useword, 0);
205 1.2 thorpej ne2000_readmem(nict, nich, asict, asich,
206 1.2 thorpej x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, useword);
207 1.2 thorpej if (bcmp(pbuf0, tbuf, ED_PAGE_SIZE) == 0) {
208 1.2 thorpej for (i = 0; i < ED_PAGE_SIZE; i++)
209 1.2 thorpej pbuf[i] = 255 - x;
210 1.2 thorpej ne2000_writemem(nict, nich, asict, asich,
211 1.2 thorpej pbuf, x << ED_PAGE_SHIFT, ED_PAGE_SIZE,
212 1.15 thorpej useword, 0);
213 1.2 thorpej ne2000_readmem(nict, nich, asict, asich,
214 1.13 msaitoh x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE,
215 1.2 thorpej useword);
216 1.2 thorpej if (bcmp(pbuf, tbuf, ED_PAGE_SIZE) == 0)
217 1.2 thorpej memsize += ED_PAGE_SIZE;
218 1.2 thorpej else
219 1.2 thorpej break;
220 1.2 thorpej } else
221 1.2 thorpej break;
222 1.2 thorpej }
223 1.2 thorpej
224 1.2 thorpej printf("%s: RAM start 0x%x, size %d\n",
225 1.13 msaitoh dsc->sc_dev.dv_xname, mstart, memsize);
226 1.2 thorpej
227 1.2 thorpej dsc->mem_start = mstart;
228 1.2 thorpej }
229 1.2 thorpej #endif /* GWETHER */
230 1.2 thorpej
231 1.2 thorpej dsc->mem_size = memsize;
232 1.2 thorpej
233 1.2 thorpej if (myea == NULL) {
234 1.2 thorpej /* Read the station address. */
235 1.2 thorpej ne2000_readmem(nict, nich, asict, asich, 0, romdata,
236 1.2 thorpej sizeof(romdata), useword);
237 1.2 thorpej for (i = 0; i < ETHER_ADDR_LEN; i++)
238 1.2 thorpej dsc->sc_enaddr[i] = romdata[i * (useword ? 2 : 1)];
239 1.2 thorpej } else
240 1.2 thorpej bcopy(myea, dsc->sc_enaddr, sizeof(dsc->sc_enaddr));
241 1.2 thorpej
242 1.2 thorpej /* Clear any pending interrupts that might have occurred above. */
243 1.2 thorpej bus_space_write_1(nict, nich, ED_P0_ISR, 0xff);
244 1.2 thorpej
245 1.14 thorpej if (dp8390_config(dsc, media, nmedia, defmedia)) {
246 1.2 thorpej printf("%s: setup failed\n", dsc->sc_dev.dv_xname);
247 1.2 thorpej return;
248 1.2 thorpej }
249 1.2 thorpej
250 1.2 thorpej /*
251 1.2 thorpej * We need to compute mem_ring a bit differently; override the
252 1.2 thorpej * value set up in dp8390_config().
253 1.2 thorpej */
254 1.2 thorpej dsc->mem_ring =
255 1.2 thorpej dsc->mem_start + ((dsc->txb_cnt * ED_TXBUF_SIZE) << ED_PAGE_SHIFT);
256 1.2 thorpej }
257 1.2 thorpej
258 1.2 thorpej /*
259 1.2 thorpej * Detect an NE-2000 or compatible. Returns a model code.
260 1.2 thorpej */
261 1.2 thorpej int
262 1.2 thorpej ne2000_detect(nict, nich, asict, asich)
263 1.2 thorpej bus_space_tag_t nict;
264 1.2 thorpej bus_space_handle_t nich;
265 1.2 thorpej bus_space_tag_t asict;
266 1.2 thorpej bus_space_handle_t asich;
267 1.2 thorpej {
268 1.2 thorpej static u_int8_t test_pattern[32] = "THIS is A memory TEST pattern";
269 1.2 thorpej u_int8_t test_buffer[32], tmp;
270 1.2 thorpej int i, rv = 0;
271 1.2 thorpej
272 1.2 thorpej /* Reset the board. */
273 1.2 thorpej #ifdef GWETHER
274 1.2 thorpej bus_space_write_1(asict, asich, NE2000_ASIC_RESET, 0);
275 1.2 thorpej delay(200);
276 1.2 thorpej #endif /* GWETHER */
277 1.2 thorpej tmp = bus_space_read_1(asict, asich, NE2000_ASIC_RESET);
278 1.2 thorpej delay(10000);
279 1.2 thorpej
280 1.2 thorpej /*
281 1.2 thorpej * I don't know if this is necessary; probably cruft leftover from
282 1.2 thorpej * Clarkson packet driver code. Doesn't do a thing on the boards I've
283 1.2 thorpej * tested. -DG [note that a outb(0x84, 0) seems to work here, and is
284 1.2 thorpej * non-invasive...but some boards don't seem to reset and I don't have
285 1.2 thorpej * complete documentation on what the 'right' thing to do is...so we do
286 1.2 thorpej * the invasive thing for now. Yuck.]
287 1.2 thorpej */
288 1.2 thorpej bus_space_write_1(asict, asich, NE2000_ASIC_RESET, tmp);
289 1.2 thorpej delay(5000);
290 1.2 thorpej
291 1.2 thorpej /*
292 1.2 thorpej * This is needed because some NE clones apparently don't reset the
293 1.2 thorpej * NIC properly (or the NIC chip doesn't reset fully on power-up).
294 1.2 thorpej * XXX - this makes the probe invasive! Done against my better
295 1.2 thorpej * judgement. -DLG
296 1.2 thorpej */
297 1.2 thorpej bus_space_write_1(nict, nich, ED_P0_CR,
298 1.2 thorpej ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STP);
299 1.2 thorpej
300 1.2 thorpej delay(5000);
301 1.2 thorpej
302 1.4 thorpej /*
303 1.4 thorpej * Generic probe routine for testing for the existance of a DS8390.
304 1.4 thorpej * Must be performed after the NIC has just been reset. This
305 1.4 thorpej * works by looking at certain register values that are guaranteed
306 1.4 thorpej * to be initialized a certain way after power-up or reset.
307 1.4 thorpej *
308 1.4 thorpej * Specifically:
309 1.4 thorpej *
310 1.4 thorpej * Register reset bits set bits
311 1.4 thorpej * -------- ---------- --------
312 1.4 thorpej * CR TXP, STA RD2, STP
313 1.4 thorpej * ISR RST
314 1.4 thorpej * IMR <all>
315 1.4 thorpej * DCR LAS
316 1.4 thorpej * TCR LB1, LB0
317 1.4 thorpej *
318 1.4 thorpej * We only look at CR and ISR, however, since looking at the others
319 1.4 thorpej * would require changing register pages, which would be intrusive
320 1.4 thorpej * if this isn't an 8390.
321 1.4 thorpej */
322 1.4 thorpej
323 1.2 thorpej tmp = bus_space_read_1(nict, nich, ED_P0_CR);
324 1.2 thorpej if ((tmp & (ED_CR_RD2 | ED_CR_TXP | ED_CR_STA | ED_CR_STP)) !=
325 1.2 thorpej (ED_CR_RD2 | ED_CR_STP))
326 1.4 thorpej goto out;
327 1.4 thorpej
328 1.4 thorpej tmp = bus_space_read_1(nict, nich, ED_P0_ISR);
329 1.4 thorpej if ((tmp & ED_ISR_RST) != ED_ISR_RST)
330 1.2 thorpej goto out;
331 1.2 thorpej
332 1.2 thorpej bus_space_write_1(nict, nich,
333 1.2 thorpej ED_P0_CR, ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA);
334 1.2 thorpej
335 1.2 thorpej for (i = 0; i < 100; i++) {
336 1.2 thorpej if ((bus_space_read_1(nict, nich, ED_P0_ISR) & ED_ISR_RST) ==
337 1.2 thorpej ED_ISR_RST) {
338 1.2 thorpej /* Ack the reset bit. */
339 1.2 thorpej bus_space_write_1(nict, nich, ED_P0_ISR, ED_ISR_RST);
340 1.2 thorpej break;
341 1.2 thorpej }
342 1.2 thorpej delay(100);
343 1.2 thorpej }
344 1.2 thorpej
345 1.2 thorpej #if 0
346 1.2 thorpej /* XXX */
347 1.2 thorpej if (i == 100)
348 1.2 thorpej goto out;
349 1.2 thorpej #endif
350 1.2 thorpej
351 1.2 thorpej /*
352 1.2 thorpej * Test the ability to read and write to the NIC memory. This has
353 1.2 thorpej * the side effect of determining if this is an NE1000 or an NE2000.
354 1.2 thorpej */
355 1.2 thorpej
356 1.2 thorpej /*
357 1.2 thorpej * This prevents packets from being stored in the NIC memory when
358 1.2 thorpej * the readmem routine turns on the start bit in the CR.
359 1.2 thorpej */
360 1.2 thorpej bus_space_write_1(nict, nich, ED_P0_RCR, ED_RCR_MON);
361 1.2 thorpej
362 1.2 thorpej /* Temporarily initialize DCR for byte operations. */
363 1.2 thorpej bus_space_write_1(nict, nich, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS);
364 1.2 thorpej
365 1.2 thorpej bus_space_write_1(nict, nich, ED_P0_PSTART, 8192 >> ED_PAGE_SHIFT);
366 1.2 thorpej bus_space_write_1(nict, nich, ED_P0_PSTOP, 16384 >> ED_PAGE_SHIFT);
367 1.2 thorpej
368 1.2 thorpej /*
369 1.2 thorpej * Write a test pattern in byte mode. If this fails, then there
370 1.2 thorpej * probably isn't any memory at 8k - which likely means that the
371 1.2 thorpej * board is an NE2000.
372 1.2 thorpej */
373 1.2 thorpej ne2000_writemem(nict, nich, asict, asich, test_pattern, 8192,
374 1.15 thorpej sizeof(test_pattern), 0, 1);
375 1.2 thorpej ne2000_readmem(nict, nich, asict, asich, 8192, test_buffer,
376 1.2 thorpej sizeof(test_buffer), 0);
377 1.2 thorpej
378 1.2 thorpej if (bcmp(test_pattern, test_buffer, sizeof(test_pattern))) {
379 1.2 thorpej /* not an NE1000 - try NE2000 */
380 1.2 thorpej bus_space_write_1(nict, nich, ED_P0_DCR,
381 1.2 thorpej ED_DCR_WTS | ED_DCR_FT1 | ED_DCR_LS);
382 1.2 thorpej bus_space_write_1(nict, nich, ED_P0_PSTART,
383 1.2 thorpej 16384 >> ED_PAGE_SHIFT);
384 1.2 thorpej bus_space_write_1(nict, nich, ED_P0_PSTOP,
385 1.2 thorpej 32768 >> ED_PAGE_SHIFT);
386 1.2 thorpej
387 1.2 thorpej /*
388 1.2 thorpej * Write the test pattern in word mode. If this also fails,
389 1.2 thorpej * then we don't know what this board is.
390 1.2 thorpej */
391 1.2 thorpej ne2000_writemem(nict, nich, asict, asich, test_pattern, 16384,
392 1.15 thorpej sizeof(test_pattern), 1, 0);
393 1.2 thorpej ne2000_readmem(nict, nich, asict, asich, 16384, test_buffer,
394 1.2 thorpej sizeof(test_buffer), 1);
395 1.2 thorpej
396 1.2 thorpej if (bcmp(test_pattern, test_buffer, sizeof(test_pattern)))
397 1.2 thorpej goto out; /* not an NE2000 either */
398 1.2 thorpej
399 1.2 thorpej rv = NE2000_TYPE_NE2000;
400 1.2 thorpej } else {
401 1.2 thorpej /* We're an NE1000. */
402 1.2 thorpej rv = NE2000_TYPE_NE1000;
403 1.2 thorpej }
404 1.2 thorpej
405 1.2 thorpej /* Clear any pending interrupts that might have occurred above. */
406 1.2 thorpej bus_space_write_1(nict, nich, ED_P0_ISR, 0xff);
407 1.2 thorpej
408 1.2 thorpej out:
409 1.2 thorpej return (rv);
410 1.2 thorpej }
411 1.2 thorpej
412 1.2 thorpej /*
413 1.2 thorpej * Write an mbuf chain to the destination NIC memory address using programmed
414 1.2 thorpej * I/O.
415 1.2 thorpej */
416 1.2 thorpej int
417 1.2 thorpej ne2000_write_mbuf(sc, m, buf)
418 1.2 thorpej struct dp8390_softc *sc;
419 1.2 thorpej struct mbuf *m;
420 1.2 thorpej int buf;
421 1.2 thorpej {
422 1.2 thorpej struct ne2000_softc *nsc = (struct ne2000_softc *)sc;
423 1.2 thorpej bus_space_tag_t nict = sc->sc_regt;
424 1.2 thorpej bus_space_handle_t nich = sc->sc_regh;
425 1.2 thorpej bus_space_tag_t asict = nsc->sc_asict;
426 1.2 thorpej bus_space_handle_t asich = nsc->sc_asich;
427 1.2 thorpej int savelen;
428 1.2 thorpej int maxwait = 100; /* about 120us */
429 1.2 thorpej
430 1.2 thorpej savelen = m->m_pkthdr.len;
431 1.2 thorpej
432 1.2 thorpej /* Select page 0 registers. */
433 1.3 enami bus_space_write_1(nict, nich, ED_P0_CR,
434 1.3 enami ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA);
435 1.2 thorpej
436 1.2 thorpej /* Reset remote DMA complete flag. */
437 1.3 enami bus_space_write_1(nict, nich, ED_P0_ISR, ED_ISR_RDC);
438 1.2 thorpej
439 1.2 thorpej /* Set up DMA byte count. */
440 1.3 enami bus_space_write_1(nict, nich, ED_P0_RBCR0, savelen);
441 1.3 enami bus_space_write_1(nict, nich, ED_P0_RBCR1, savelen >> 8);
442 1.2 thorpej
443 1.2 thorpej /* Set up destination address in NIC mem. */
444 1.3 enami bus_space_write_1(nict, nich, ED_P0_RSAR0, buf);
445 1.3 enami bus_space_write_1(nict, nich, ED_P0_RSAR1, buf >> 8);
446 1.2 thorpej
447 1.2 thorpej /* Set remote DMA write. */
448 1.3 enami bus_space_write_1(nict, nich,
449 1.3 enami ED_P0_CR, ED_CR_RD1 | ED_CR_PAGE_0 | ED_CR_STA);
450 1.2 thorpej
451 1.2 thorpej /*
452 1.2 thorpej * Transfer the mbuf chain to the NIC memory. NE2000 cards
453 1.2 thorpej * require that data be transferred as words, and only words,
454 1.2 thorpej * so that case requires some extra code to patch over odd-length
455 1.2 thorpej * mbufs.
456 1.2 thorpej */
457 1.2 thorpej if (nsc->sc_type == NE2000_TYPE_NE1000) {
458 1.2 thorpej /* NE1000s are easy. */
459 1.2 thorpej for (; m != 0; m = m->m_next) {
460 1.2 thorpej if (m->m_len) {
461 1.2 thorpej bus_space_write_multi_1(asict, asich,
462 1.2 thorpej NE2000_ASIC_DATA, mtod(m, u_int8_t *),
463 1.2 thorpej m->m_len);
464 1.2 thorpej }
465 1.2 thorpej }
466 1.2 thorpej } else {
467 1.2 thorpej /* NE2000s are a bit trickier. */
468 1.12 thorpej u_int8_t *data, savebyte[2];
469 1.12 thorpej int l, leftover;
470 1.12 thorpej #ifdef DIAGNOSTIC
471 1.12 thorpej u_int8_t *lim;
472 1.12 thorpej #endif
473 1.12 thorpej /* Start out with no leftover data. */
474 1.12 thorpej leftover = 0;
475 1.12 thorpej savebyte[0] = savebyte[1] = 0;
476 1.2 thorpej
477 1.2 thorpej for (; m != 0; m = m->m_next) {
478 1.2 thorpej l = m->m_len;
479 1.2 thorpej if (l == 0)
480 1.2 thorpej continue;
481 1.2 thorpej data = mtod(m, u_int8_t *);
482 1.12 thorpej #ifdef DIAGNOSTIC
483 1.12 thorpej lim = data + l;
484 1.12 thorpej #endif
485 1.12 thorpej while (l > 0) {
486 1.12 thorpej if (leftover) {
487 1.12 thorpej /*
488 1.12 thorpej * Data left over (from mbuf or
489 1.12 thorpej * realignment). Buffer the next
490 1.12 thorpej * byte, and write it and the
491 1.12 thorpej * leftover data out.
492 1.12 thorpej */
493 1.12 thorpej savebyte[1] = *data++;
494 1.12 thorpej l--;
495 1.12 thorpej bus_space_write_stream_2(asict, asich,
496 1.12 thorpej NE2000_ASIC_DATA,
497 1.12 thorpej *(u_int16_t *)savebyte);
498 1.12 thorpej leftover = 0;
499 1.18 drochner } else if (BUS_SPACE_ALIGNED_POINTER(data,
500 1.12 thorpej u_int16_t) == 0) {
501 1.12 thorpej /*
502 1.12 thorpej * Unaligned data; buffer the next
503 1.12 thorpej * byte.
504 1.12 thorpej */
505 1.12 thorpej savebyte[0] = *data++;
506 1.12 thorpej l--;
507 1.12 thorpej leftover = 1;
508 1.12 thorpej } else {
509 1.12 thorpej /*
510 1.12 thorpej * Aligned data; output contiguous
511 1.12 thorpej * words as much as we can, then
512 1.12 thorpej * buffer the remaining byte, if any.
513 1.12 thorpej */
514 1.12 thorpej leftover = l & 1;
515 1.12 thorpej l &= ~1;
516 1.12 thorpej bus_space_write_multi_stream_2(asict,
517 1.12 thorpej asich, NE2000_ASIC_DATA,
518 1.12 thorpej (u_int16_t *)data, l >> 1);
519 1.12 thorpej data += l;
520 1.12 thorpej if (leftover)
521 1.12 thorpej savebyte[0] = *data++;
522 1.12 thorpej l = 0;
523 1.12 thorpej }
524 1.2 thorpej }
525 1.12 thorpej if (l < 0)
526 1.12 thorpej panic("ne2000_write_mbuf: negative len");
527 1.12 thorpej #ifdef DIAGNOSTIC
528 1.12 thorpej if (data != lim)
529 1.12 thorpej panic("ne2000_write_mbuf: data != lim");
530 1.12 thorpej #endif
531 1.2 thorpej }
532 1.12 thorpej if (leftover) {
533 1.2 thorpej savebyte[1] = 0;
534 1.10 sakamoto bus_space_write_stream_2(asict, asich, NE2000_ASIC_DATA,
535 1.2 thorpej *(u_int16_t *)savebyte);
536 1.2 thorpej }
537 1.2 thorpej }
538 1.2 thorpej
539 1.2 thorpej /*
540 1.2 thorpej * Wait for remote DMA to complete. This is necessary because on the
541 1.2 thorpej * transmit side, data is handled internally by the NIC in bursts, and
542 1.2 thorpej * we can't start another remote DMA until this one completes. Not
543 1.2 thorpej * waiting causes really bad things to happen - like the NIC wedging
544 1.2 thorpej * the bus.
545 1.2 thorpej */
546 1.2 thorpej while (((bus_space_read_1(nict, nich, ED_P0_ISR) & ED_ISR_RDC) !=
547 1.2 thorpej ED_ISR_RDC) && --maxwait);
548 1.2 thorpej
549 1.2 thorpej if (maxwait == 0) {
550 1.2 thorpej log(LOG_WARNING,
551 1.2 thorpej "%s: remote transmit DMA failed to complete\n",
552 1.2 thorpej sc->sc_dev.dv_xname);
553 1.2 thorpej dp8390_reset(sc);
554 1.2 thorpej }
555 1.2 thorpej
556 1.2 thorpej return (savelen);
557 1.2 thorpej }
558 1.2 thorpej
559 1.2 thorpej /*
560 1.2 thorpej * Given a source and destination address, copy 'amout' of a packet from
561 1.2 thorpej * the ring buffer into a linear destination buffer. Takes into account
562 1.2 thorpej * ring-wrap.
563 1.2 thorpej */
564 1.2 thorpej int
565 1.2 thorpej ne2000_ring_copy(sc, src, dst, amount)
566 1.2 thorpej struct dp8390_softc *sc;
567 1.2 thorpej int src;
568 1.2 thorpej caddr_t dst;
569 1.2 thorpej u_short amount;
570 1.2 thorpej {
571 1.2 thorpej struct ne2000_softc *nsc = (struct ne2000_softc *)sc;
572 1.2 thorpej bus_space_tag_t nict = sc->sc_regt;
573 1.2 thorpej bus_space_handle_t nich = sc->sc_regh;
574 1.2 thorpej bus_space_tag_t asict = nsc->sc_asict;
575 1.2 thorpej bus_space_handle_t asich = nsc->sc_asich;
576 1.2 thorpej u_short tmp_amount;
577 1.20 enami int useword = NE2000_USE_WORD(nsc->sc_type);
578 1.2 thorpej
579 1.2 thorpej /* Does copy wrap to lower addr in ring buffer? */
580 1.2 thorpej if (src + amount > sc->mem_end) {
581 1.2 thorpej tmp_amount = sc->mem_end - src;
582 1.2 thorpej
583 1.2 thorpej /* Copy amount up to end of NIC memory. */
584 1.2 thorpej ne2000_readmem(nict, nich, asict, asich, src,
585 1.2 thorpej (u_int8_t *)dst, tmp_amount, useword);
586 1.2 thorpej
587 1.2 thorpej amount -= tmp_amount;
588 1.2 thorpej src = sc->mem_ring;
589 1.2 thorpej dst += tmp_amount;
590 1.2 thorpej }
591 1.2 thorpej
592 1.2 thorpej ne2000_readmem(nict, nich, asict, asich, src, (u_int8_t *)dst,
593 1.2 thorpej amount, useword);
594 1.2 thorpej
595 1.2 thorpej return (src + amount);
596 1.2 thorpej }
597 1.2 thorpej
598 1.2 thorpej void
599 1.2 thorpej ne2000_read_hdr(sc, buf, hdr)
600 1.2 thorpej struct dp8390_softc *sc;
601 1.2 thorpej int buf;
602 1.2 thorpej struct dp8390_ring *hdr;
603 1.2 thorpej {
604 1.2 thorpej struct ne2000_softc *nsc = (struct ne2000_softc *)sc;
605 1.2 thorpej
606 1.2 thorpej ne2000_readmem(sc->sc_regt, sc->sc_regh, nsc->sc_asict, nsc->sc_asich,
607 1.2 thorpej buf, (u_int8_t *)hdr, sizeof(struct dp8390_ring),
608 1.20 enami NE2000_USE_WORD(nsc->sc_type));
609 1.7 thorpej #if BYTE_ORDER == BIG_ENDIAN
610 1.7 thorpej hdr->count = bswap16(hdr->count);
611 1.7 thorpej #endif
612 1.2 thorpej }
613 1.2 thorpej
614 1.2 thorpej int
615 1.2 thorpej ne2000_test_mem(sc)
616 1.2 thorpej struct dp8390_softc *sc;
617 1.2 thorpej {
618 1.2 thorpej
619 1.2 thorpej /* Noop. */
620 1.2 thorpej return (0);
621 1.2 thorpej }
622 1.2 thorpej
623 1.2 thorpej /*
624 1.2 thorpej * Given a NIC memory source address and a host memory destination address,
625 1.2 thorpej * copy 'amount' from NIC to host using programmed i/o. The 'amount' is
626 1.2 thorpej * rounded up to a word - ok as long as mbufs are word sized.
627 1.2 thorpej */
628 1.2 thorpej void
629 1.2 thorpej ne2000_readmem(nict, nich, asict, asich, src, dst, amount, useword)
630 1.2 thorpej bus_space_tag_t nict;
631 1.2 thorpej bus_space_handle_t nich;
632 1.2 thorpej bus_space_tag_t asict;
633 1.2 thorpej bus_space_handle_t asich;
634 1.2 thorpej int src;
635 1.2 thorpej u_int8_t *dst;
636 1.2 thorpej size_t amount;
637 1.2 thorpej int useword;
638 1.2 thorpej {
639 1.2 thorpej
640 1.2 thorpej /* Select page 0 registers. */
641 1.2 thorpej bus_space_write_1(nict, nich, ED_P0_CR,
642 1.2 thorpej ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA);
643 1.2 thorpej
644 1.2 thorpej /* Round up to a word. */
645 1.2 thorpej if (amount & 1)
646 1.2 thorpej ++amount;
647 1.2 thorpej
648 1.2 thorpej /* Set up DMA byte count. */
649 1.2 thorpej bus_space_write_1(nict, nich, ED_P0_RBCR0, amount);
650 1.2 thorpej bus_space_write_1(nict, nich, ED_P0_RBCR1, amount >> 8);
651 1.2 thorpej
652 1.2 thorpej /* Set up source address in NIC mem. */
653 1.2 thorpej bus_space_write_1(nict, nich, ED_P0_RSAR0, src);
654 1.2 thorpej bus_space_write_1(nict, nich, ED_P0_RSAR1, src >> 8);
655 1.2 thorpej
656 1.2 thorpej bus_space_write_1(nict, nich, ED_P0_CR,
657 1.2 thorpej ED_CR_RD0 | ED_CR_PAGE_0 | ED_CR_STA);
658 1.2 thorpej
659 1.2 thorpej if (useword)
660 1.10 sakamoto bus_space_read_multi_stream_2(asict, asich, NE2000_ASIC_DATA,
661 1.2 thorpej (u_int16_t *)dst, amount >> 1);
662 1.2 thorpej else
663 1.2 thorpej bus_space_read_multi_1(asict, asich, NE2000_ASIC_DATA,
664 1.2 thorpej dst, amount);
665 1.2 thorpej }
666 1.2 thorpej
667 1.2 thorpej /*
668 1.2 thorpej * Stripped down routine for writing a linear buffer to NIC memory. Only
669 1.2 thorpej * used in the probe routine to test the memory. 'len' must be even.
670 1.2 thorpej */
671 1.2 thorpej void
672 1.15 thorpej ne2000_writemem(nict, nich, asict, asich, src, dst, len, useword, quiet)
673 1.2 thorpej bus_space_tag_t nict;
674 1.2 thorpej bus_space_handle_t nich;
675 1.2 thorpej bus_space_tag_t asict;
676 1.2 thorpej bus_space_handle_t asich;
677 1.2 thorpej u_int8_t *src;
678 1.2 thorpej int dst;
679 1.2 thorpej size_t len;
680 1.2 thorpej int useword;
681 1.15 thorpej int quiet;
682 1.2 thorpej {
683 1.2 thorpej int maxwait = 100; /* about 120us */
684 1.2 thorpej
685 1.2 thorpej /* Select page 0 registers. */
686 1.2 thorpej bus_space_write_1(nict, nich, ED_P0_CR,
687 1.2 thorpej ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA);
688 1.2 thorpej
689 1.2 thorpej /* Reset remote DMA complete flag. */
690 1.2 thorpej bus_space_write_1(nict, nich, ED_P0_ISR, ED_ISR_RDC);
691 1.2 thorpej
692 1.2 thorpej /* Set up DMA byte count. */
693 1.2 thorpej bus_space_write_1(nict, nich, ED_P0_RBCR0, len);
694 1.2 thorpej bus_space_write_1(nict, nich, ED_P0_RBCR1, len >> 8);
695 1.2 thorpej
696 1.2 thorpej /* Set up destination address in NIC mem. */
697 1.2 thorpej bus_space_write_1(nict, nich, ED_P0_RSAR0, dst);
698 1.2 thorpej bus_space_write_1(nict, nich, ED_P0_RSAR1, dst >> 8);
699 1.2 thorpej
700 1.2 thorpej /* Set remote DMA write. */
701 1.2 thorpej bus_space_write_1(nict, nich, ED_P0_CR,
702 1.2 thorpej ED_CR_RD1 | ED_CR_PAGE_0 | ED_CR_STA);
703 1.2 thorpej
704 1.2 thorpej if (useword)
705 1.10 sakamoto bus_space_write_multi_stream_2(asict, asich, NE2000_ASIC_DATA,
706 1.2 thorpej (u_int16_t *)src, len >> 1);
707 1.2 thorpej else
708 1.2 thorpej bus_space_write_multi_1(asict, asich, NE2000_ASIC_DATA,
709 1.2 thorpej src, len);
710 1.2 thorpej
711 1.2 thorpej /*
712 1.2 thorpej * Wait for remote DMA to complete. This is necessary because on the
713 1.2 thorpej * transmit side, data is handled internally by the NIC in bursts, and
714 1.2 thorpej * we can't start another remote DMA until this one completes. Not
715 1.2 thorpej * waiting causes really bad things to happen - like the NIC wedging
716 1.2 thorpej * the bus.
717 1.2 thorpej */
718 1.2 thorpej while (((bus_space_read_1(nict, nich, ED_P0_ISR) & ED_ISR_RDC) !=
719 1.2 thorpej ED_ISR_RDC) && --maxwait);
720 1.2 thorpej
721 1.15 thorpej if (!quiet && maxwait == 0)
722 1.2 thorpej printf("ne2000_writemem: failed to complete\n");
723 1.2 thorpej }
724