vrpciu.c revision 1.7 1 /* $NetBSD: vrpciu.c,v 1.7 2002/02/24 09:16:07 takemura Exp $ */
2
3 /*-
4 * Copyright (c) 2001 Enami Tsugutomo.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <sys/param.h>
30 #include <sys/systm.h>
31 #include <sys/device.h>
32
33 #include <machine/bus.h>
34 #include <machine/bus_space_hpcmips.h>
35 #include <machine/bus_dma_hpcmips.h>
36 #include <machine/config_hook.h>
37 #include <machine/platid.h>
38 #include <machine/platid_mask.h>
39
40 #include <dev/pci/pcivar.h>
41 #include <dev/pci/pcidevs.h>
42 #include <dev/pci/pciidereg.h>
43
44 #include <hpcmips/vr/icureg.h>
45 #include <hpcmips/vr/vripif.h>
46 #include <hpcmips/vr/vrpciureg.h>
47
48 #include "pci.h"
49
50 #ifdef DEBUG
51 #define DPRINTF(args) printf args
52 #else
53 #define DPRINTF(args)
54 #endif
55
56 struct vrpciu_softc {
57 struct device sc_dev;
58
59 vrip_chipset_tag_t sc_vc;
60 bus_space_tag_t sc_iot;
61 bus_space_handle_t sc_ioh;
62 void *sc_ih;
63
64 struct vrc4173bcu_softc *sc_bcu; /* vrc4173bcu */
65
66 struct hpcmips_pci_chipset sc_pc;
67 };
68
69 static void vrpciu_write(struct vrpciu_softc *, int, u_int32_t);
70 static u_int32_t
71 vrpciu_read(struct vrpciu_softc *, int);
72 #ifdef DEBUG
73 static void vrpciu_write_2(struct vrpciu_softc *, int, u_int16_t)
74 __attribute__((unused));
75 static u_int16_t
76 vrpciu_read_2(struct vrpciu_softc *, int);
77 #endif
78 static int vrpciu_match(struct device *, struct cfdata *, void *);
79 static void vrpciu_attach(struct device *, struct device *, void *);
80 #if NPCI > 0
81 static int vrpciu_print(void *, const char *);
82 #endif
83 static int vrpciu_intr(void *);
84 static void vrpciu_attach_hook(struct device *, struct device *,
85 struct pcibus_attach_args *);
86 static int vrpciu_bus_maxdevs(pci_chipset_tag_t, int);
87 static int vrpciu_bus_devorder(pci_chipset_tag_t, int, char *);
88 static pcitag_t vrpciu_make_tag(pci_chipset_tag_t, int, int, int);
89 static void vrpciu_decompose_tag(pci_chipset_tag_t, pcitag_t, int *, int *,
90 int *);
91 static pcireg_t vrpciu_conf_read(pci_chipset_tag_t, pcitag_t, int);
92 static void vrpciu_conf_write(pci_chipset_tag_t, pcitag_t, int, pcireg_t);
93 static int vrpciu_intr_map(struct pci_attach_args *, pci_intr_handle_t *);
94 static const char *vrpciu_intr_string(pci_chipset_tag_t, pci_intr_handle_t);
95 static const struct evcnt *vrpciu_intr_evcnt(pci_chipset_tag_t,
96 pci_intr_handle_t);
97 static void *vrpciu_intr_establish(pci_chipset_tag_t, pci_intr_handle_t,
98 int, int (*)(void *), void *);
99 static void vrpciu_intr_disestablish(pci_chipset_tag_t, void *);
100
101 struct cfattach vrpciu_ca = {
102 sizeof(struct vrpciu_softc), vrpciu_match, vrpciu_attach
103 };
104
105 static void
106 vrpciu_write(struct vrpciu_softc *sc, int offset, u_int32_t val)
107 {
108
109 bus_space_write_4(sc->sc_iot, sc->sc_ioh, offset, val);
110 }
111
112 static u_int32_t
113 vrpciu_read(struct vrpciu_softc *sc, int offset)
114 {
115
116 return (bus_space_read_4(sc->sc_iot, sc->sc_ioh, offset));
117 }
118
119 #ifdef DEBUG
120 static void
121 vrpciu_write_2(struct vrpciu_softc *sc, int offset, u_int16_t val)
122 {
123
124 bus_space_write_2(sc->sc_iot, sc->sc_ioh, offset, val);
125 }
126
127 static u_int16_t
128 vrpciu_read_2(struct vrpciu_softc *sc, int offset)
129 {
130
131 return (bus_space_read_2(sc->sc_iot, sc->sc_ioh, offset));
132 }
133 #endif
134
135 static int
136 vrpciu_match(struct device *parent, struct cfdata *match, void *aux)
137 {
138
139 return (1);
140 }
141
142 static void
143 vrpciu_attach(struct device *parent, struct device *self, void *aux)
144 {
145 struct vrpciu_softc *sc = (struct vrpciu_softc *)self;
146 pci_chipset_tag_t pc = &sc->sc_pc;
147 struct vrip_attach_args *va = aux;
148 #if defined(DEBUG) || NPCI > 0
149 u_int32_t reg;
150 #endif
151 #if NPCI > 0
152 struct bus_space_tag_hpcmips *iot;
153 char tmpbuf[16];
154 struct pcibus_attach_args pba;
155 #endif
156
157 sc->sc_vc = va->va_vc;
158 sc->sc_iot = va->va_iot;
159 if (bus_space_map(sc->sc_iot, va->va_addr, va->va_size, 0,
160 &sc->sc_ioh)) {
161 printf(": couldn't map io space\n");
162 return;
163 }
164
165 sc->sc_ih = vrip_intr_establish(va->va_vc, va->va_unit, 0, IPL_TTY,
166 vrpciu_intr, sc);
167 if (sc->sc_ih == NULL) {
168 printf(": couldn't establish interrupt\n");
169 return;
170 }
171
172 /* Enable level 2 interrupt */
173 vrip_intr_setmask2(va->va_vc, sc->sc_ih, PCIINT_INT0, 1);
174
175 printf("\n");
176
177 #ifdef DEBUG
178 #define DUMP_MAW(sc, name, reg) do { \
179 printf("%s: %s =\t0x%08x\n", (sc)->sc_dev.dv_xname, \
180 (name), (reg)); \
181 printf("%s:\tIBA/MASK =\t0x%08x/0x%08x (0x%08x - 0x%08x)\n", \
182 (sc)->sc_dev.dv_xname, \
183 reg & VRPCIU_MAW_IBAMASK, VRPCIU_MAW_ADDRMASK(reg), \
184 VRPCIU_MAW_ADDR(reg), \
185 VRPCIU_MAW_ADDR(reg) + VRPCIU_MAW_SIZE(reg)); \
186 printf("%s:\tWINEN =\t0x%08x\n", (sc)->sc_dev.dv_xname, \
187 reg & VRPCIU_MAW_WINEN); \
188 printf("%s:\tPCIADR =\t0x%08x\n", (sc)->sc_dev.dv_xname, \
189 VRPCIU_MAW_PCIADDR(reg)); \
190 } while (0)
191 #define DUMP_TAW(sc, name, reg) do { \
192 printf("%s: %s =\t\t0x%08x\n", (sc)->sc_dev.dv_xname, \
193 (name), (reg)); \
194 printf("%s:\tMASK =\t0x%08x\n", (sc)->sc_dev.dv_xname, \
195 VRPCIU_TAW_ADDRMASK(reg)); \
196 printf("%s:\tWINEN =\t0x%08x\n", (sc)->sc_dev.dv_xname, \
197 reg & VRPCIU_TAW_WINEN); \
198 printf("%s:\tIBA =\t0x%08x\n", (sc)->sc_dev.dv_xname, \
199 VRPCIU_TAW_IBA(reg)); \
200 } while (0)
201 reg = vrpciu_read(sc, VRPCIU_MMAW1REG);
202 DUMP_MAW(sc, "MMAW1", reg);
203 reg = vrpciu_read(sc, VRPCIU_MMAW2REG);
204 DUMP_MAW(sc, "MMAW2", reg);
205 reg = vrpciu_read(sc, VRPCIU_TAW1REG);
206 DUMP_TAW(sc, "TAW1", reg);
207 reg = vrpciu_read(sc, VRPCIU_TAW2REG);
208 DUMP_TAW(sc, "TAW2", reg);
209 reg = vrpciu_read(sc, VRPCIU_MIOAWREG);
210 DUMP_MAW(sc, "MIOAW", reg);
211 printf("%s: BUSERRAD =\t0x%08x\n", sc->sc_dev.dv_xname,
212 vrpciu_read(sc, VRPCIU_BUSERRADREG));
213 printf("%s: INTCNTSTA =\t0x%08x\n", sc->sc_dev.dv_xname,
214 vrpciu_read(sc, VRPCIU_INTCNTSTAREG));
215 printf("%s: EXACC =\t0x%08x\n", sc->sc_dev.dv_xname,
216 vrpciu_read(sc, VRPCIU_EXACCREG));
217 printf("%s: RECONT =\t0x%08x\n", sc->sc_dev.dv_xname,
218 vrpciu_read(sc, VRPCIU_RECONTREG));
219 printf("%s: PCIEN =\t0x%08x\n", sc->sc_dev.dv_xname,
220 vrpciu_read(sc, VRPCIU_ENREG));
221 printf("%s: CLOCKSEL =\t0x%08x\n", sc->sc_dev.dv_xname,
222 vrpciu_read(sc, VRPCIU_CLKSELREG));
223 printf("%s: TRDYV =\t0x%08x\n", sc->sc_dev.dv_xname,
224 vrpciu_read(sc, VRPCIU_TRDYVREG));
225 printf("%s: CLKRUN =\t0x%08x\n", sc->sc_dev.dv_xname,
226 vrpciu_read_2(sc, VRPCIU_CLKRUNREG));
227 printf("%s: IDREG =\t0x%08x\n", sc->sc_dev.dv_xname,
228 vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_ID_REG));
229 reg = vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_COMMAND_STATUS_REG);
230 printf("%s: CSR =\t\t0x%08x\n", sc->sc_dev.dv_xname, reg);
231 vrpciu_write(sc, VRPCIU_CONF_BASE + PCI_COMMAND_STATUS_REG, reg);
232 printf("%s: CSR =\t\t0x%08x\n", sc->sc_dev.dv_xname,
233 vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_COMMAND_STATUS_REG));
234 printf("%s: CLASS =\t0x%08x\n", sc->sc_dev.dv_xname,
235 vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_CLASS_REG));
236 printf("%s: BHLC =\t\t0x%08x\n", sc->sc_dev.dv_xname,
237 vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_BHLC_REG));
238 printf("%s: MAIL =\t\t0x%08x\n", sc->sc_dev.dv_xname,
239 vrpciu_read(sc, VRPCIU_CONF_BASE + VRPCIU_CONF_MAILREG));
240 printf("%s: MBA1 =\t\t0x%08x\n", sc->sc_dev.dv_xname,
241 vrpciu_read(sc, VRPCIU_CONF_BASE + VRPCIU_CONF_MBA1REG));
242 printf("%s: MBA2 =\t\t0x%08x\n", sc->sc_dev.dv_xname,
243 vrpciu_read(sc, VRPCIU_CONF_BASE + VRPCIU_CONF_MBA2REG));
244 printf("%s: INTR =\t\t0x%08x\n", sc->sc_dev.dv_xname,
245 vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_INTERRUPT_REG));
246 #if 0
247 vrpciu_write(sc, VRPCIU_CONF_BASE + PCI_INTERRUPT_REG,
248 vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_INTERRUPT_REG) | 0x01);
249 printf("%s: INTR =\t\t0x%08x\n", sc->sc_dev.dv_xname,
250 vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_INTERRUPT_REG));
251 #endif
252 #endif
253
254 pc->pc_dev = &sc->sc_dev;
255 pc->pc_attach_hook = vrpciu_attach_hook;
256 pc->pc_bus_maxdevs = vrpciu_bus_maxdevs;
257 pc->pc_bus_devorder = vrpciu_bus_devorder;
258 pc->pc_make_tag = vrpciu_make_tag;
259 pc->pc_decompose_tag = vrpciu_decompose_tag;
260 pc->pc_conf_read = vrpciu_conf_read;
261 pc->pc_conf_write = vrpciu_conf_write;
262 pc->pc_intr_map = vrpciu_intr_map;
263 pc->pc_intr_string = vrpciu_intr_string;
264 pc->pc_intr_evcnt = vrpciu_intr_evcnt;
265 pc->pc_intr_establish = vrpciu_intr_establish;
266 pc->pc_intr_disestablish = vrpciu_intr_disestablish;
267
268 #if 0
269 {
270 int i;
271
272 for (i = 0; i < 8; i++)
273 printf("%s: ID_REG(0, 0, %d) = 0x%08x\n",
274 sc->sc_dev.dv_xname, i,
275 pci_conf_read(pc, pci_make_tag(pc, 0, 0, i),
276 PCI_ID_REG));
277 }
278 #endif
279
280 #if NPCI > 0
281 memset(&pba, 0, sizeof(pba));
282 pba.pba_busname = "pci";
283
284 /* For now, just inherit window mappings set by WinCE. XXX. */
285
286 iot = hpcmips_alloc_bus_space_tag();
287 reg = vrpciu_read(sc, VRPCIU_MIOAWREG);
288 snprintf(tmpbuf, sizeof(tmpbuf), "%s/iot",
289 sc->sc_dev.dv_xname);
290 hpcmips_init_bus_space(iot, (struct bus_space_tag_hpcmips *)sc->sc_iot,
291 tmpbuf, VRPCIU_MAW_ADDR(reg), VRPCIU_MAW_SIZE(reg));
292 pba.pba_iot = &iot->bst;
293
294 /*
295 * Just use system bus space tag. It works since WinCE maps
296 * PCI bus space at same offset. But this isn't right thing
297 * of course. XXX.
298 */
299 pba.pba_memt = sc->sc_iot;
300 pba.pba_dmat = &hpcmips_default_bus_dma_tag.bdt;
301 pba.pba_bus = 0;
302
303 if (platid_match(&platid, &platid_mask_MACH_LASER5_L_BOARD)) {
304 /*
305 * fix PCI device configration for L-Router.
306 */
307 /* change IDE controller to native mode */
308 reg = pci_conf_read(pc, pci_make_tag(pc, 0, 16, 0),
309 PCI_CLASS_REG);
310 reg |= PCIIDE_INTERFACE_PCI(0) << PCI_INTERFACE_SHIFT;
311 reg |= PCIIDE_INTERFACE_PCI(1) << PCI_INTERFACE_SHIFT;
312 pci_conf_write(pc, pci_make_tag(pc, 0, 16, 0), PCI_CLASS_REG,
313 reg);
314 /* fix broken BAR setting of fxp0, fxp1 */
315 pci_conf_write(pc, pci_make_tag(pc, 0, 0, 0), PCI_MAPREG_START,
316 0x11100000);
317 pci_conf_write(pc, pci_make_tag(pc, 0, 1, 0), PCI_MAPREG_START,
318 0x11200000);
319 }
320
321 pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED |
322 PCI_FLAGS_MRL_OKAY;
323 pba.pba_pc = pc;
324
325 config_found(self, &pba, vrpciu_print);
326 #endif
327 }
328
329 #if NPCI > 0
330 static int
331 vrpciu_print(void *aux, const char *pnp)
332 {
333 struct pcibus_attach_args *pba = aux;
334
335 if (pnp != NULL)
336 printf("%s at %s", pba->pba_busname, pnp);
337 else
338 printf(" bus %d", pba->pba_bus);
339
340 return (UNCONF);
341 }
342 #endif
343
344 /*
345 * Handle PCI error interrupts.
346 */
347 int
348 vrpciu_intr(void *arg)
349 {
350 struct vrpciu_softc *sc = (struct vrpciu_softc *)arg;
351 u_int32_t isr;
352
353 isr = vrpciu_read(sc, VRPCIU_INTCNTSTAREG);
354 printf("%s: vrpciu_intr 0x%08x\n", sc->sc_dev.dv_xname, isr);
355 return ((isr & 0x0f) ? 1 : 0);
356 }
357
358 void
359 vrpciu_attach_hook(struct device *parent, struct device *self,
360 struct pcibus_attach_args *pba)
361 {
362
363 return;
364 }
365
366 int
367 vrpciu_bus_maxdevs(pci_chipset_tag_t pc, int busno)
368 {
369
370 return (32);
371 }
372
373 int
374 vrpciu_bus_devorder(pci_chipset_tag_t pc, int busno, char *devs)
375 {
376 int i, dev;
377 char priorities[32];
378 static pcireg_t ids[] = {
379 /* these devices should be attached first */
380 PCI_ID_CODE(PCI_VENDOR_NEC, PCI_PRODUCT_NEC_VRC4173_BCU),
381 };
382
383 /* scan PCI devices and check the id table */
384 memset(priorities, 0, sizeof(priorities));
385 for (dev = 0; dev < 32; dev++) {
386 pcireg_t id;
387 id = pci_conf_read(pc, pci_make_tag(pc, 0, dev, 0),PCI_ID_REG);
388 for (i = 0; i < sizeof(ids)/sizeof(*ids); i++)
389 if (id == ids[i])
390 priorities[dev] = 1;
391 }
392
393 /* fill order array */
394 for (i = 1; 0 <= i; i--)
395 for (dev = 0; dev < 32; dev++)
396 if (priorities[dev] == i)
397 *devs++ = dev;
398
399 return (32);
400 }
401
402 pcitag_t
403 vrpciu_make_tag(pci_chipset_tag_t pc, int bus, int device, int function)
404 {
405
406 return ((bus << 16) | (device << 11) | (function << 8));
407 }
408
409 void
410 vrpciu_decompose_tag(pci_chipset_tag_t pc, pcitag_t tag, int *bp, int *dp,
411 int *fp)
412 {
413
414 if (bp != NULL)
415 *bp = (tag >> 16) & 0xff;
416 if (dp != NULL)
417 *dp = (tag >> 11) & 0x1f;
418 if (fp != NULL)
419 *fp = (tag >> 8) & 0x07;
420 }
421
422 pcireg_t
423 vrpciu_conf_read(pci_chipset_tag_t pc, pcitag_t tag, int reg)
424 {
425 struct vrpciu_softc *sc = (struct vrpciu_softc *)pc->pc_dev;
426 u_int32_t val;
427 int bus, device, function;
428
429 pci_decompose_tag(pc, tag, &bus, &device, &function);
430 if (bus == 0) {
431 if (device > 21)
432 return ((pcitag_t)-1);
433 tag = (1 << (device + 11)) | (function << 8); /* Type 0 */
434 } else
435 tag |= VRPCIU_CONF_TYPE1;
436
437 vrpciu_write(sc, VRPCIU_CONFAREG, tag | reg);
438 val = vrpciu_read(sc, VRPCIU_CONFDREG);
439 #if 0
440 printf("%s: conf_read: tag = 0x%08x, reg = 0x%x, val = 0x%08x\n",
441 sc->sc_dev.dv_xname, (u_int32_t)tag, reg, val);
442 #endif
443 return (val);
444 }
445
446 void
447 vrpciu_conf_write(pci_chipset_tag_t pc, pcitag_t tag, int reg,
448 pcireg_t data)
449 {
450 struct vrpciu_softc *sc = (struct vrpciu_softc *)pc->pc_dev;
451 int bus, device, function;
452
453 #if 0
454 printf("%s: conf_write: tag = 0x%08x, reg = 0x%x, val = 0x%08x\n",
455 sc->sc_dev.dv_xname, (u_int32_t)tag, reg, (u_int32_t)data);
456 #endif
457 vrpciu_decompose_tag(pc, tag, &bus, &device, &function);
458 if (bus == 0) {
459 if (device > 21)
460 return;
461 tag = (1 << (device + 11)) | (function << 8); /* Type 0 */
462 } else
463 tag |= VRPCIU_CONF_TYPE1;
464
465 vrpciu_write(sc, VRPCIU_CONFAREG, tag | reg);
466 vrpciu_write(sc, VRPCIU_CONFDREG, data);
467 }
468
469 int
470 vrpciu_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp)
471 {
472 pci_chipset_tag_t pc = pa->pa_pc;
473 pcitag_t intrtag = pa->pa_intrtag;
474 int bus, dev, func;
475 #ifdef DEBUG
476 int line = pa->pa_intrline;
477 int pin = pa->pa_intrpin;
478 #endif
479
480 pci_decompose_tag(pc, intrtag, &bus, &dev, &func);
481 DPRINTF(("%s(%d, %d, %d): line = %d, pin = %d\n", pc->pc_dev->dv_xname,
482 bus, dev, func, line, pin));
483
484 *ihp = CONFIG_HOOK_PCIINTR_ID(bus, dev, func);
485
486 return (0);
487 }
488
489 const char *
490 vrpciu_intr_string(pci_chipset_tag_t pc, pci_intr_handle_t ih)
491 {
492 static char irqstr[sizeof("pciintr") + 16];
493
494 snprintf(irqstr, sizeof(irqstr), "pciintr %d:%d:%d",
495 CONFIG_HOOK_PCIINTR_BUS((int)ih),
496 CONFIG_HOOK_PCIINTR_DEVICE((int)ih),
497 CONFIG_HOOK_PCIINTR_FUNCTION((int)ih));
498
499 return (irqstr);
500 }
501
502 const struct evcnt *
503 vrpciu_intr_evcnt(pci_chipset_tag_t pc, pci_intr_handle_t ih)
504 {
505
506 /* XXX for now, no evcnt parent reported */
507
508 return (NULL);
509 }
510
511 void *
512 vrpciu_intr_establish(pci_chipset_tag_t pc, pci_intr_handle_t ih, int level,
513 int (*func)(void *), void *arg)
514 {
515
516 if (ih == -1)
517 return (NULL);
518 DPRINTF(("vrpciu_intr_establish: %lx\n", ih));
519
520 return (config_hook(CONFIG_HOOK_PCIINTR, ih, CONFIG_HOOK_EXCLUSIVE,
521 (int (*)(void *, int, long, void *))func, arg));
522 }
523
524 void
525 vrpciu_intr_disestablish(pci_chipset_tag_t pc, void *cookie)
526 {
527
528 DPRINTF(("vrpciu_intr_disestablish: %p\n", cookie));
529 config_unhook(cookie);
530 }
531