summaryrefslogtreecommitdiffstats
path: root/sys/pci/if_fpa.c
blob: 0dab3560d715f9110a9327fd3feedcd840e244a2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
/*-
 * Copyright (c) 1995, 1996 Matt Thomas <matt@3am-software.com>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. The name of the author may not be used to endorse or promote products
 *    derived from this software withough specific prior written permission
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * $Id: if_fpa.c,v 1.3 1997/03/24 11:24:51 bde Exp $
 *
 */

/*
 * DEC PDQ FDDI Controller; code for BSD derived operating systems
 *
 *   This module supports the DEC DEFPA PCI FDDI Controller
 */


#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#if defined(__bsdi__) || defined(__NetBSD__)
#include <sys/device.h>
#endif

#include <net/if.h>

#ifdef INET
#include <netinet/in.h>
#include <netinet/if_ether.h>
#endif

#if defined(__FreeBSD__)
#include "fpa.h"
#include <pci/pcivar.h>
#include <dev/pdq/pdqvar.h>
#include <dev/pdq/pdqreg.h>
#elif defined(__bsdi__)
#include <i386/isa/isavar.h>
#include <i386/isa/icu.h>
#ifndef DRQNONE
#define	DRQNONE		0
#endif
#if _BSDI_VERSION < 199401
#define IRQSHARE	0
#endif
#elif defined(__NetBSD__)
#include <dev/pci/pcivar.h>
#include <dev/ic/pdqvar.h>
#include <dev/ic/pdqreg.h>
#endif /* __NetBSD__ */


#define	DEC_VENDORID		0x1011
#define	DEFPA_CHIPID		0x000F
#define	PCI_VENDORID(x)		((x) & 0xFFFF)
#define	PCI_CHIPID(x)		(((x) >> 16) & 0xFFFF)

#define	DEFPA_LATENCY	0x88

#define	PCI_CFLT	0x0C	/* Configuration Latency */
#define	PCI_CBMA	0x10	/* Configuration Base Memory Address */
#define	PCI_CBIO	0x14	/* Configuration Base I/O Address */

#if defined(__FreeBSD__)
#if NFPA < 4
#undef NFPA
#define NFPA	4
#endif
static pdq_softc_t *pdqs_pci[NFPA];
#define	PDQ_PCI_UNIT_TO_SOFTC(unit)	(pdqs_pci[unit])
#if BSD >= 199506
#define	pdq_pci_ifwatchdog		NULL
#endif

#elif defined(__bsdi__)
extern struct cfdriver fpacd;
#define	PDQ_PCI_UNIT_TO_SOFTC(unit)	((pdq_softc_t *)fpacd.cd_devs[unit])

#elif defined(__NetBSD__)
extern struct cfattach fpa_ca;
extern struct cfdriver fpa_cd;
#define	PDQ_PCI_UNIT_TO_SOFTC(unit)	((pdq_softc_t *)fpa_cd.cd_devs[unit])
#define	pdq_pci_ifwatchdog		NULL
#endif

#ifndef pdq_pci_ifwatchdog
static ifnet_ret_t
pdq_pci_ifwatchdog(
    int unit)
{
    pdq_ifwatchdog(&PDQ_PCI_UNIT_TO_SOFTC(unit)->sc_if);
}
#endif

#if defined(__FreeBSD__) && BSD >= 199506
static void
pdq_pci_ifintr(
    void *arg)
{
    (void) pdq_interrupt(((pdq_softc_t *) arg)->sc_pdq);
}
#else
static int
pdq_pci_ifintr(
    void *arg)
{
    pdq_softc_t * const sc = (pdq_softc_t *) arg;
#ifdef __FreeBSD__
    return pdq_interrupt(sc->sc_pdq);
#elif defined(__bsdi__) || defined(__NetBSD__)
    (void) pdq_interrupt(sc->sc_pdq);
    return 1;
#endif
}
#endif /* __FreeBSD && BSD */

#if defined(__FreeBSD__)
static void pdq_pci_shutdown(int, void *);

/*
 * This is the PCI configuration support.  Since the PDQ is available
 * on both EISA and PCI boards, one must be careful in how defines the
 * PDQ in the config file.
 */
static char *
pdq_pci_probe(
    pcici_t config_id,
    pcidi_t device_id)
{
    if (PCI_VENDORID(device_id) == DEC_VENDORID &&
	    PCI_CHIPID(device_id) == DEFPA_CHIPID)
	return "Digital DEFPA PCI FDDI Controller";
    return NULL;
}

static void
pdq_pci_attach(
    pcici_t config_id,
    int unit)
{
    pdq_softc_t *sc;
    vm_offset_t va_csrs, pa_csrs;
    pdq_uint32_t data;

    if (unit == NFPA) {
	printf("fpa%d: not configured; kernel is built for only %d device%s.\n",
	       unit, NFPA, NFPA == 1 ? "" : "s");
	return;
    }

    data = pci_conf_read(config_id, PCI_CFLT);
    if ((data & 0xFF00) < (DEFPA_LATENCY << 8)) {
	data &= ~0xFF00;
	data |= DEFPA_LATENCY << 8;
	pci_conf_write(config_id, PCI_CFLT, data);
    }

    sc = (pdq_softc_t *) malloc(sizeof(*sc), M_DEVBUF, M_NOWAIT);
    if (sc == NULL)
	return;

    bzero(sc, sizeof(pdq_softc_t));	/* Zero out the softc*/
    if (!pci_map_mem(config_id, PCI_CBMA, &va_csrs, &pa_csrs)) {
	free((void *) sc, M_DEVBUF);
	return;
    }

    sc->sc_if.if_name = "fpa";
    sc->sc_if.if_unit = unit;
    sc->sc_membase = (pdq_bus_memaddr_t) va_csrs;
    sc->sc_pdq = pdq_initialize(PDQ_BUS_PCI, sc->sc_membase,
				sc->sc_if.if_name, sc->sc_if.if_unit,
				(void *) sc, PDQ_DEFPA);
    if (sc->sc_pdq == NULL) {
	free((void *) sc, M_DEVBUF);
	return;
    }
    bcopy((caddr_t) sc->sc_pdq->pdq_hwaddr.lanaddr_bytes, sc->sc_ac.ac_enaddr, 6);
    pdqs_pci[unit] = sc;
    pdq_ifattach(sc, pdq_pci_ifwatchdog);
    pci_map_int(config_id, pdq_pci_ifintr, (void*) sc, &net_imask);
    at_shutdown(pdq_pci_shutdown, (void *) sc, SHUTDOWN_POST_SYNC);

}

static void
pdq_pci_shutdown(
    int howto,
    void *sc)
{
    pdq_hwreset(((pdq_softc_t *)sc)->sc_pdq);
}

static u_long pdq_pci_count;

struct pci_device fpadevice = {
    "fpa",
    pdq_pci_probe,
    pdq_pci_attach,
    &pdq_pci_count,
    NULL
};

#ifdef DATA_SET
DATA_SET (pcidevice_set, fpadevice);
#endif
#elif defined(__bsdi__)

static int
pdq_pci_match(
    pci_devaddr_t *pa)
{
    int irq;
    int id;

    id = pci_inl(pa, PCI_VENDOR_ID);
    if (PCI_VENDORID(id) != DEC_VENDORID || PCI_CHIPID(id) != DEFPA_CHIPID)
	return 0;

    irq = pci_inl(pa, PCI_I_LINE) & 0xFF;
    if (irq == 0 || irq >= 16)
	return 0;

    return 1;
}

int
pdq_pci_probe(
    struct device *parent,
    struct cfdata *cf,
    void *aux)
{
    struct isa_attach_args *ia = (struct isa_attach_args *) aux;
    pdq_uint32_t irq, data;
    pci_devaddr_t *pa;

    pa = pci_scan(pdq_pci_match);
    if (pa == NULL)
	return 0;

    irq = (1 << (pci_inl(pa, PCI_I_LINE) & 0xFF));

    if (ia->ia_irq != IRQUNK && irq != ia->ia_irq) {
	printf("fpa%d: error: desired IRQ of %d does not match device's actual IRQ of %d\n",
	       cf->cf_unit,
	       ffs(ia->ia_irq) - 1, ffs(irq) - 1);
	return 0;
    }
    if (ia->ia_irq == IRQUNK) {
	(void) isa_irqalloc(irq);
	ia->ia_irq = irq;
    }

    /* PCI bus masters don't use host DMA channels */
    ia->ia_drq = DRQNONE;

    /* Get the memory base address; assume the BIOS set it up correctly */
    ia->ia_maddr = (caddr_t) (pci_inl(pa, PCI_CBMA) & ~7);
    pci_outl(pa, PCI_CBMA, 0xFFFFFFFF);
    ia->ia_msize = ((~pci_inl(pa, PCI_CBMA)) | 7) + 1;
    pci_outl(pa, PCI_CBMA, (int) ia->ia_maddr);

    /* Disable I/O space access */
    pci_outl(pa, PCI_COMMAND, pci_inl(pa, PCI_COMMAND) & ~1);
    ia->ia_iobase = 0;
    ia->ia_iosize = 0;

    /* Make sure the latency timer is what the DEFPA likes */
    data = pci_inl(pa, PCI_CFLT);
    if ((data & 0xFF00) < (DEFPA_LATENCY << 8)) {
	data &= ~0xFF00;
	data |= DEFPA_LATENCY << 8;
	pci_outl(pa, PCI_CFLT, data);
    }
    ia->ia_irq |= IRQSHARE;

    return 1;
}

void
pdq_pci_attach(
    struct device *parent,
    struct device *self,
    void *aux)
{
    pdq_softc_t *sc = (pdq_softc_t *) self;
    register struct isa_attach_args *ia = (struct isa_attach_args *) aux;
    register struct ifnet *ifp = &sc->sc_if;
    int i;

    sc->sc_if.if_unit = sc->sc_dev.dv_unit;
    sc->sc_if.if_name = "fpa";
    sc->sc_if.if_flags = 0;
    sc->sc_membase = (pdq_bus_memaddr_t) mapphys((vm_offset_t)ia->ia_maddr, ia->ia_msize);

    sc->sc_pdq = pdq_initialize(PDQ_BUS_PCI, sc->sc_membase,
				sc->sc_if.if_name, sc->sc_if.if_unit,
				(void *) sc, PDQ_DEFPA);
    if (sc->sc_pdq == NULL) {
	printf("fpa%d: initialization failed\n", sc->sc_if.if_unit);
	return;
    }

    bcopy((caddr_t) sc->sc_pdq->pdq_hwaddr.lanaddr_bytes, sc->sc_ac.ac_enaddr, 6);

    pdq_ifattach(sc, pdq_pci_ifwatchdog);

    isa_establish(&sc->sc_id, &sc->sc_dev);

    sc->sc_ih.ih_fun = pdq_pci_ifintr;
    sc->sc_ih.ih_arg = (void *)sc;
    intr_establish(ia->ia_irq, &sc->sc_ih, DV_NET);

    sc->sc_ats.func = (void (*)(void *)) pdq_hwreset;
    sc->sc_ats.arg = (void *) sc->sc_pdq;
    atshutdown(&sc->sc_ats, ATSH_ADD);
}

struct cfdriver fpacd = {
    0, "fpa", pdq_pci_probe, pdq_pci_attach,
#if _BSDI_VERSION >= 199401
    DV_IFNET,
#endif
    sizeof(pdq_softc_t)
};

#elif defined(__NetBSD__)

static int
pdq_pci_match(
    struct device *parent,
    void *match,
    void *aux)
{
    struct pci_attach_args *pa = (struct pci_attach_args *) aux;

    if (PCI_VENDORID(pa->pa_id) != DEC_VENDORID)
	return 0;
    if (PCI_CHIPID(pa->pa_id) == DEFPA_CHIPID)
	return 1;

    return 0;
}

static void
pdq_pci_attach(
    struct device * const parent,
    struct device * const self,
    void * const aux)
{
    pdq_softc_t * const sc = (pdq_softc_t *) self;
    struct pci_attach_args * const pa = (struct pci_attach_args *) aux;
    pdq_uint32_t data;
    pci_intr_handle_t intrhandle;
    const char *intrstr;
#ifdef PDQ_IOMAPPED
    bus_io_addr_t iobase;
    bus_io_size_t iosize;
#else
    bus_mem_addr_t membase;
    bus_mem_size_t memsize;
#endif

    data = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_CFLT);
    if ((data & 0xFF00) < (DEFPA_LATENCY << 8)) {
	data &= ~0xFF00;
	data |= DEFPA_LATENCY << 8;
	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_CFLT, data);
    }

    sc->sc_bc = pa->pa_bc;
    bcopy(sc->sc_dev.dv_xname, sc->sc_if.if_xname, IFNAMSIZ);
    sc->sc_if.if_flags = 0;
    sc->sc_if.if_softc = sc;

#ifdef PDQ_IOMAPPED
    if (pci_io_find(pa->pa_pc, pa->pa_tag, PCI_CBIO, &iobase, &iosize)
	    || bus_io_map(pa->pa_bc, iobase, iosize, &sc->sc_iobase))
	return;
#else
    if (pci_mem_find(pa->pa_pc, pa->pa_tag, PCI_CBMA, &membase, &memsize, NULL)
	    || bus_mem_map(pa->pa_bc, membase, memsize, 0, &sc->sc_membase))
	return;
#endif

    sc->sc_pdq = pdq_initialize(sc->sc_bc, sc->sc_membase,
				sc->sc_if.if_xname, 0,
				(void *) sc, PDQ_DEFPA);
    if (sc->sc_pdq == NULL) {
	printf("%s: initialization failed\n", sc->sc_dev.dv_xname);
	return;
    }

    bcopy((caddr_t) sc->sc_pdq->pdq_hwaddr.lanaddr_bytes, sc->sc_ac.ac_enaddr, 6);
    pdq_ifattach(sc, pdq_pci_ifwatchdog);

    if (pci_intr_map(pa->pa_pc, pa->pa_intrtag, pa->pa_intrpin,
		     pa->pa_intrline, &intrhandle)) {
	printf("%s: couldn't map interrupt\n", self->dv_xname);
	return;
    }
    intrstr = pci_intr_string(pa->pa_pc, intrhandle);
    sc->sc_ih = pci_intr_establish(pa->pa_pc, intrhandle, IPL_NET, pdq_pci_ifintr, sc);
    if (sc->sc_ih == NULL) {
	printf("%s: couldn't establish interrupt", self->dv_xname);
	if (intrstr != NULL)
	    printf(" at %s", intrstr);
	printf("\n");
	return;
    }

    sc->sc_ats = shutdownhook_establish((void (*)(void *)) pdq_hwreset, sc->sc_pdq);
    if (sc->sc_ats == NULL)
	printf("%s: warning: couldn't establish shutdown hook\n", self->dv_xname);
    if (intrstr != NULL)
	printf("%s: interrupting at %s\n", self->dv_xname, intrstr);
}

struct cfattach fpa_ca = {
    sizeof(pdq_softc_t), pdq_pci_match, pdq_pci_attach
};

struct cfdriver fpa_cd = {
    0, "fpa", DV_IFNET
};

#endif /* __NetBSD__ */
OpenPOWER on IntegriCloud