FreeBSD/Linux Kernel Cross Reference
sys/pci/if_en_pci.c
1 /* $NetBSD: if_en_pci.c,v 1.1 1996/06/22 02:00:31 chuck Exp $ */
2
3 /*
4 *
5 * Copyright (c) 1996 Charles D. Cranor and Washington University.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by Charles D. Cranor and
19 * Washington University.
20 * 4. The name of the author may not be used to endorse or promote products
21 * derived from this software without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 *
34 * $FreeBSD: releng/5.1/sys/pci/if_en_pci.c 114739 2003-05-05 16:35:52Z harti $
35 */
36
37 /*
38 *
39 * i f _ e n _ p c i . c
40 *
41 * author: Chuck Cranor <chuck@ccrc.wustl.edu>
42 * started: spring, 1996.
43 *
44 * FreeBSD PCI glue for the eni155p card.
45 * thanks to Matt Thomas for figuring out FreeBSD vs NetBSD vs etc.. diffs.
46 */
47 #include <sys/param.h>
48 #include <sys/kernel.h>
49 #include <sys/systm.h>
50 #include <sys/socket.h>
51 #include <sys/sysctl.h>
52
53 #include <sys/bus.h>
54 #include <machine/bus.h>
55 #include <sys/rman.h>
56 #include <machine/resource.h>
57
58 #include <vm/uma.h>
59
60 #include <net/if.h>
61 #include <net/if_atm.h>
62
63 #include <pci/pcivar.h>
64 #include <pci/pcireg.h>
65
66 #include <dev/en/midwayreg.h>
67 #include <dev/en/midwayvar.h>
68
69 MODULE_DEPEND(en, pci, 1, 1, 1);
70 MODULE_DEPEND(en, atm, 1, 1, 1);
71
72 /*
73 * local structures
74 */
75 struct en_pci_softc {
76 /* bus independent stuff */
77 struct en_softc esc; /* includes "device" structure */
78
79 /* freebsd newbus glue */
80 struct resource *res; /* resource descriptor for registers */
81 struct resource *irq; /* resource descriptor for interrupt */
82 void *ih; /* interrupt handle */
83 };
84
85 static void eni_get_macaddr(device_t, struct en_pci_softc *);
86 static void adp_get_macaddr(struct en_pci_softc *);
87
88 /*
89 * address of config base memory address register in PCI config space
90 * (this is card specific)
91 */
92 #define PCI_CBMA 0x10
93
94 /*
95 * tonga (pci bridge). ENI cards only!
96 */
97 #define EN_TONGA 0x60 /* PCI config addr of tonga reg */
98
99 #define TONGA_SWAP_DMA 0x80 /* endian swap control */
100 #define TONGA_SWAP_BYTE 0x40
101 #define TONGA_SWAP_WORD 0x20
102 #define TONGA_READ_MULT 0x00
103 #define TONGA_READ_MEM 0x04
104 #define TONGA_READ_IVAN 0x08
105 #define TONGA_READ_KEN 0x0C
106
107 /*
108 * adaptec pci bridge. ADP cards only!
109 */
110 #define ADP_PCIREG 0x050040 /* PCI control register */
111
112 #define ADP_PCIREG_RESET 0x1 /* reset card */
113 #define ADP_PCIREG_IENABLE 0x2 /* interrupt enable */
114 #define ADP_PCIREG_SWAP_WORD 0x4 /* swap byte on slave access */
115 #define ADP_PCIREG_SWAP_DMA 0x8 /* swap byte on DMA */
116
117 #define PCI_VENDOR_EFFICIENTNETS 0x111a /* Efficent Networks */
118 #define PCI_PRODUCT_EFFICIENTNETS_ENI155PF 0x0000 /* ENI-155P ATM */
119 #define PCI_PRODUCT_EFFICIENTNETS_ENI155PA 0x0002 /* ENI-155P ATM */
120 #define PCI_VENDOR_ADP 0x9004 /* adaptec */
121 #define PCI_PRODUCT_ADP_AIC5900 0x5900
122 #define PCI_PRODUCT_ADP_AIC5905 0x5905
123 #define PCI_VENDOR(x) ((x) & 0xFFFF)
124 #define PCI_CHIPID(x) (((x) >> 16) & 0xFFFF)
125
126 /*
127 * bus specific reset function [ADP only!]
128 */
129 static void
130 adp_busreset(void *v)
131 {
132 struct en_softc *sc = (struct en_softc *)v;
133 uint32_t dummy;
134
135 bus_space_write_4(sc->en_memt, sc->en_base, ADP_PCIREG,
136 ADP_PCIREG_RESET);
137 DELAY(1000); /* let it reset */
138 dummy = bus_space_read_4(sc->en_memt, sc->en_base, ADP_PCIREG);
139 bus_space_write_4(sc->en_memt, sc->en_base, ADP_PCIREG,
140 (ADP_PCIREG_SWAP_DMA | ADP_PCIREG_IENABLE));
141 dummy = bus_space_read_4(sc->en_memt, sc->en_base, ADP_PCIREG);
142 if ((dummy & (ADP_PCIREG_SWAP_WORD | ADP_PCIREG_SWAP_DMA)) !=
143 ADP_PCIREG_SWAP_DMA)
144 if_printf(&sc->ifatm.ifnet, "adp_busreset: Adaptec ATM did "
145 "NOT reset!\n");
146 }
147
148 /***********************************************************************/
149
150 /*
151 * autoconfig stuff
152 */
153 static int
154 en_pci_probe(device_t dev)
155 {
156 switch (pci_get_vendor(dev)) {
157
158 case PCI_VENDOR_EFFICIENTNETS:
159 switch (pci_get_device(dev)) {
160
161 case PCI_PRODUCT_EFFICIENTNETS_ENI155PF:
162 case PCI_PRODUCT_EFFICIENTNETS_ENI155PA:
163 device_set_desc(dev, "Efficient Networks ENI-155p");
164 return (0);
165 }
166 break;
167
168 case PCI_VENDOR_ADP:
169 switch (pci_get_device(dev)) {
170
171 case PCI_PRODUCT_ADP_AIC5900:
172 case PCI_PRODUCT_ADP_AIC5905:
173 device_set_desc(dev, "Adaptec 155 ATM");
174 return (0);
175 }
176 break;
177 }
178 return (ENXIO);
179 }
180
181 static int
182 en_pci_attach(device_t dev)
183 {
184 struct en_softc *sc;
185 struct en_pci_softc *scp;
186 u_long val;
187 int rid, unit, error = 0;
188
189 sc = device_get_softc(dev);
190 scp = (struct en_pci_softc *)sc;
191
192 unit = device_get_unit(dev);
193 sc->ifatm.ifnet.if_unit = unit;
194 sc->ifatm.ifnet.if_name = "en";
195
196 /*
197 * Enable bus mastering.
198 */
199 val = pci_read_config(dev, PCIR_COMMAND, 2);
200 val |= (PCIM_CMD_MEMEN|PCIM_CMD_BUSMASTEREN);
201 pci_write_config(dev, PCIR_COMMAND, val, 2);
202
203 /*
204 * Map control/status registers.
205 */
206 rid = PCI_CBMA;
207 scp->res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
208 0, ~0, 1, RF_ACTIVE);
209 if (scp->res == NULL) {
210 device_printf(dev, "could not map memory\n");
211 error = ENXIO;
212 goto fail;
213 }
214
215 sc->dev = dev;
216 sc->en_memt = rman_get_bustag(scp->res);
217 sc->en_base = rman_get_bushandle(scp->res);
218
219 /*
220 * Allocate our interrupt.
221 */
222 rid = 0;
223 scp->irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1,
224 RF_SHAREABLE | RF_ACTIVE);
225 if (scp->irq == NULL) {
226 device_printf(dev, "could not map interrupt\n");
227 bus_release_resource(dev, SYS_RES_MEMORY, PCI_CBMA, scp->res);
228 error = ENXIO;
229 goto fail;
230 }
231
232 sc->ipl = 1; /* XXX (required to enable interrupt on midway) */
233
234 /* figure out if we are an adaptec card or not */
235 sc->is_adaptec = (pci_get_vendor(dev) == PCI_VENDOR_ADP) ? 1 : 0;
236
237 /*
238 * set up pci bridge
239 */
240 if (sc->is_adaptec) {
241 adp_get_macaddr(scp);
242 sc->en_busreset = adp_busreset;
243 adp_busreset(sc);
244 } else {
245 eni_get_macaddr(dev, scp);
246 sc->en_busreset = NULL;
247 pci_write_config(dev, EN_TONGA, TONGA_SWAP_DMA | TONGA_READ_IVAN, 4);
248 }
249
250 /*
251 * Common attach stuff
252 */
253 if ((error = en_attach(sc)) != 0) {
254 device_printf(dev, "attach failed\n");
255 bus_teardown_intr(dev, scp->irq, scp->ih);
256 bus_release_resource(dev, SYS_RES_IRQ, 0, scp->irq);
257 bus_release_resource(dev, SYS_RES_MEMORY, PCI_CBMA, scp->res);
258 goto fail;
259 }
260
261 /*
262 * Do the interrupt SETUP last just before returning
263 */
264 error = bus_setup_intr(dev, scp->irq, INTR_TYPE_NET,
265 en_intr, sc, &scp->ih);
266 if (error) {
267 en_reset(sc);
268 atm_ifdetach(&sc->ifatm.ifnet);
269 device_printf(dev, "could not setup irq\n");
270 bus_release_resource(dev, SYS_RES_IRQ, 0, scp->irq);
271 bus_release_resource(dev, SYS_RES_MEMORY, PCI_CBMA, scp->res);
272 en_destroy(sc);
273 goto fail;
274 }
275
276 return (0);
277
278 fail:
279 return (error);
280 }
281
282 /*
283 * Detach the adapter
284 */
285 static int
286 en_pci_detach(device_t dev)
287 {
288 struct en_softc *sc = device_get_softc(dev);
289 struct en_pci_softc *scp = (struct en_pci_softc *)sc;
290
291 /*
292 * Stop DMA and drop transmit queue.
293 */
294 if ((sc->ifatm.ifnet.if_flags & IFF_RUNNING)) {
295 if_printf(&sc->ifatm.ifnet, "still running\n");
296 sc->ifatm.ifnet.if_flags &= ~IFF_RUNNING;
297 }
298
299 /*
300 * Close down routes etc.
301 */
302 en_reset(sc);
303 atm_ifdetach(&sc->ifatm.ifnet);
304
305 /*
306 * Deallocate resources.
307 */
308 bus_teardown_intr(dev, scp->irq, scp->ih);
309 bus_release_resource(dev, SYS_RES_IRQ, 0, scp->irq);
310 bus_release_resource(dev, SYS_RES_MEMORY, PCI_CBMA, scp->res);
311
312 /*
313 * Free all the driver internal resources
314 */
315 en_destroy(sc);
316
317 return (0);
318 }
319
320 static int
321 en_pci_shutdown(device_t dev)
322 {
323 struct en_pci_softc *psc = device_get_softc(dev);
324
325 en_reset(&psc->esc);
326 DELAY(10); /* is this necessary? */
327
328 return (0);
329 }
330
331 /*
332 * Get the MAC address from an Adaptec board. No idea how to get
333 * serial number or other stuff, because I have no documentation for that
334 * card.
335 */
336 static void
337 adp_get_macaddr(struct en_pci_softc *scp)
338 {
339 struct en_softc * sc = (struct en_softc *)scp;
340 int lcv;
341
342 for (lcv = 0; lcv < sizeof(sc->ifatm.mib.esi); lcv++)
343 sc->ifatm.mib.esi[lcv] = bus_space_read_1(sc->en_memt,
344 sc->en_base, MID_ADPMACOFF + lcv);
345 }
346
347 /*
348 * Read station (MAC) address from serial EEPROM.
349 * derived from linux drivers/atm/eni.c by Werner Almesberger, EPFL LRC.
350 */
351 #define EN_PROM_MAGIC 0x0c
352 #define EN_PROM_DATA 0x02
353 #define EN_PROM_CLK 0x01
354 #define EN_ESI 64
355 #define EN_SERIAL 112
356
357 /*
358 * Read a byte from the given address in the EEPROM
359 */
360 static uint8_t
361 eni_get_byte(device_t dev, uint32_t *data, u_int address)
362 {
363 int j;
364 uint8_t tmp;
365
366 address = (address << 1) + 1;
367
368 /* start operation */
369 *data |= EN_PROM_DATA ;
370 pci_write_config(dev, EN_TONGA, *data, 4);
371 *data |= EN_PROM_CLK ;
372 pci_write_config(dev, EN_TONGA, *data, 4);
373 *data &= ~EN_PROM_DATA ;
374 pci_write_config(dev, EN_TONGA, *data, 4);
375 *data &= ~EN_PROM_CLK ;
376 pci_write_config(dev, EN_TONGA, *data, 4);
377 /* send address with serial line */
378 for ( j = 7 ; j >= 0 ; j --) {
379 *data = ((address >> j) & 1) ? (*data | EN_PROM_DATA) :
380 (*data & ~EN_PROM_DATA);
381 pci_write_config(dev, EN_TONGA, *data, 4);
382 *data |= EN_PROM_CLK ;
383 pci_write_config(dev, EN_TONGA, *data, 4);
384 *data &= ~EN_PROM_CLK ;
385 pci_write_config(dev, EN_TONGA, *data, 4);
386 }
387 /* get ack */
388 *data |= EN_PROM_DATA ;
389 pci_write_config(dev, EN_TONGA, *data, 4);
390 *data |= EN_PROM_CLK ;
391 pci_write_config(dev, EN_TONGA, *data, 4);
392 *data = pci_read_config(dev, EN_TONGA, 4);
393 *data &= ~EN_PROM_CLK ;
394 pci_write_config(dev, EN_TONGA, *data, 4);
395 *data |= EN_PROM_DATA ;
396 pci_write_config(dev, EN_TONGA, *data, 4);
397
398 tmp = 0;
399
400 for ( j = 7 ; j >= 0 ; j --) {
401 tmp <<= 1;
402 *data |= EN_PROM_DATA ;
403 pci_write_config(dev, EN_TONGA, *data, 4);
404 *data |= EN_PROM_CLK ;
405 pci_write_config(dev, EN_TONGA, *data, 4);
406 *data = pci_read_config(dev, EN_TONGA, 4);
407 if(*data & EN_PROM_DATA) tmp |= 1;
408 *data &= ~EN_PROM_CLK ;
409 pci_write_config(dev, EN_TONGA, *data, 4);
410 *data |= EN_PROM_DATA ;
411 pci_write_config(dev, EN_TONGA, *data, 4);
412 }
413 /* get ack */
414 *data |= EN_PROM_DATA ;
415 pci_write_config(dev, EN_TONGA, *data, 4);
416 *data |= EN_PROM_CLK ;
417 pci_write_config(dev, EN_TONGA, *data, 4);
418 *data = pci_read_config(dev, EN_TONGA, 4);
419 *data &= ~EN_PROM_CLK ;
420 pci_write_config(dev, EN_TONGA, *data, 4);
421 *data |= EN_PROM_DATA ;
422 pci_write_config(dev, EN_TONGA, *data, 4);
423
424 return (tmp);
425 }
426
427 /*
428 * Get MAC address and other stuff from the EEPROM
429 */
430 static void
431 eni_get_macaddr(device_t dev, struct en_pci_softc *scp)
432 {
433 struct en_softc * sc = (struct en_softc *)scp;
434 int i;
435 uint32_t data, t_data;
436
437 t_data = pci_read_config(dev, EN_TONGA, 4) & 0xffffff00;
438
439 data = EN_PROM_MAGIC | EN_PROM_DATA | EN_PROM_CLK;
440 pci_write_config(dev, EN_TONGA, data, 4);
441
442 for (i = 0; i < sizeof(sc->ifatm.mib.esi); i ++)
443 sc->ifatm.mib.esi[i] = eni_get_byte(dev, &data, i + EN_ESI);
444
445 sc->ifatm.mib.serial = 0;
446 for (i = 0; i < 4; i++) {
447 sc->ifatm.mib.serial <<= 8;
448 sc->ifatm.mib.serial |= eni_get_byte(dev, &data, i + EN_SERIAL);
449 }
450 /* stop operation */
451 data &= ~EN_PROM_DATA;
452 pci_write_config(dev, EN_TONGA, data, 4);
453 data |= EN_PROM_CLK;
454 pci_write_config(dev, EN_TONGA, data, 4);
455 data |= EN_PROM_DATA;
456 pci_write_config(dev, EN_TONGA, data, 4);
457 pci_write_config(dev, EN_TONGA, t_data, 4);
458 }
459
460 /*
461 * Driver infrastructure
462 */
463 static device_method_t en_methods[] = {
464 /* Device interface */
465 DEVMETHOD(device_probe, en_pci_probe),
466 DEVMETHOD(device_attach, en_pci_attach),
467 DEVMETHOD(device_detach, en_pci_detach),
468 DEVMETHOD(device_shutdown, en_pci_shutdown),
469
470 { 0, 0 }
471 };
472
473 static driver_t en_driver = {
474 "en",
475 en_methods,
476 sizeof(struct en_pci_softc),
477 };
478
479 static devclass_t en_devclass;
480
481 DRIVER_MODULE(en, pci, en_driver, en_devclass, 0, 0);
Cache object: 0fee0e413c023c484e16b9ad15e97cd0
|