vrpciu.c revision 1.20 1 /* $NetBSD: vrpciu.c,v 1.20 2012/10/27 17:17:56 chs 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/cdefs.h>
30 __KERNEL_RCSID(0, "$NetBSD: vrpciu.c,v 1.20 2012/10/27 17:17:56 chs Exp $");
31
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/device.h>
35
36 #include <machine/bus.h>
37 #include <machine/bus_space_hpcmips.h>
38 #include <machine/bus_dma_hpcmips.h>
39 #include <machine/config_hook.h>
40 #include <machine/platid.h>
41 #include <machine/platid_mask.h>
42
43 #include <dev/pci/pcivar.h>
44 #include <dev/pci/pcidevs.h>
45 #include <dev/pci/pciidereg.h>
46
47 #include <hpcmips/vr/icureg.h>
48 #include <hpcmips/vr/vripif.h>
49 #include <hpcmips/vr/vrpciureg.h>
50
51 #include "pci.h"
52
53 #ifdef DEBUG
54 #define DPRINTF(args) printf args
55 #else
56 #define DPRINTF(args)
57 #endif
58
59 struct vrpciu_softc {
60 device_t sc_dev;
61
62 vrip_chipset_tag_t sc_vc;
63 bus_space_tag_t sc_iot;
64 bus_space_handle_t sc_ioh;
65 void *sc_ih;
66
67 struct vrc4173bcu_softc *sc_bcu; /* vrc4173bcu */
68
69 struct hpcmips_pci_chipset sc_pc;
70 };
71
72 static void vrpciu_write(struct vrpciu_softc *, int, u_int32_t);
73 static u_int32_t
74 vrpciu_read(struct vrpciu_softc *, int);
75 #ifdef DEBUG
76 static void vrpciu_write_2(struct vrpciu_softc *, int, u_int16_t)
77 __attribute__((unused));
78 static u_int16_t
79 vrpciu_read_2(struct vrpciu_softc *, int);
80 #endif
81 static int vrpciu_match(device_t, cfdata_t, void *);
82 static void vrpciu_attach(device_t, device_t, void *);
83 static int vrpciu_intr(void *);
84 static void vrpciu_attach_hook(device_t, device_t,
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, uint8_t *, int);
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(const 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 CFATTACH_DECL_NEW(vrpciu, sizeof(struct vrpciu_softc),
102 vrpciu_match, vrpciu_attach, NULL, NULL);
103
104 static void
105 vrpciu_write(struct vrpciu_softc *sc, int offset, u_int32_t val)
106 {
107
108 bus_space_write_4(sc->sc_iot, sc->sc_ioh, offset, val);
109 }
110
111 static u_int32_t
112 vrpciu_read(struct vrpciu_softc *sc, int offset)
113 {
114
115 return (bus_space_read_4(sc->sc_iot, sc->sc_ioh, offset));
116 }
117
118 #ifdef DEBUG
119 static void
120 vrpciu_write_2(struct vrpciu_softc *sc, int offset, u_int16_t val)
121 {
122
123 bus_space_write_2(sc->sc_iot, sc->sc_ioh, offset, val);
124 }
125
126 static u_int16_t
127 vrpciu_read_2(struct vrpciu_softc *sc, int offset)
128 {
129
130 return (bus_space_read_2(sc->sc_iot, sc->sc_ioh, offset));
131 }
132 #endif
133
134 static int
135 vrpciu_match(device_t parent, cfdata_t match, void *aux)
136 {
137
138 return (1);
139 }
140
141 static void
142 vrpciu_attach(device_t parent, device_t self, void *aux)
143 {
144 struct vrpciu_softc *sc = device_private(self);
145 pci_chipset_tag_t pc = &sc->sc_pc;
146 struct vrip_attach_args *va = aux;
147 #if defined(DEBUG) || NPCI > 0
148 u_int32_t reg;
149 #endif
150 #if NPCI > 0
151 struct bus_space_tag_hpcmips *iot;
152 char tmpbuf[16];
153 struct pcibus_attach_args pba;
154 #endif
155
156 sc->sc_dev = self;
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", device_xname((sc)->sc_dev), \
180 (name), (reg)); \
181 printf("%s:\tIBA/MASK =\t0x%08x/0x%08x (0x%08x - 0x%08x)\n", \
182 device_xname((sc)->sc_dev), \
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", device_xname((sc)->sc_dev), \
187 reg & VRPCIU_MAW_WINEN); \
188 printf("%s:\tPCIADR =\t0x%08x\n", device_xname((sc)->sc_dev), \
189 VRPCIU_MAW_PCIADDR(reg)); \
190 } while (0)
191 #define DUMP_TAW(sc, name, reg) do { \
192 printf("%s: %s =\t\t0x%08x\n", device_xname((sc)->sc_dev), \
193 (name), (reg)); \
194 printf("%s:\tMASK =\t0x%08x\n", device_xname((sc)->sc_dev), \
195 VRPCIU_TAW_ADDRMASK(reg)); \
196 printf("%s:\tWINEN =\t0x%08x\n", device_xname((sc)->sc_dev), \
197 reg & VRPCIU_TAW_WINEN); \
198 printf("%s:\tIBA =\t0x%08x\n", device_xname((sc)->sc_dev), \
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", device_xname(sc->sc_dev),
212 vrpciu_read(sc, VRPCIU_BUSERRADREG));
213 printf("%s: INTCNTSTA =\t0x%08x\n", device_xname(sc->sc_dev),
214 vrpciu_read(sc, VRPCIU_INTCNTSTAREG));
215 printf("%s: EXACC =\t0x%08x\n", device_xname(sc->sc_dev),
216 vrpciu_read(sc, VRPCIU_EXACCREG));
217 printf("%s: RECONT =\t0x%08x\n", device_xname(sc->sc_dev),
218 vrpciu_read(sc, VRPCIU_RECONTREG));
219 printf("%s: PCIEN =\t0x%08x\n", device_xname(sc->sc_dev),
220 vrpciu_read(sc, VRPCIU_ENREG));
221 printf("%s: CLOCKSEL =\t0x%08x\n", device_xname(sc->sc_dev),
222 vrpciu_read(sc, VRPCIU_CLKSELREG));
223 printf("%s: TRDYV =\t0x%08x\n", device_xname(sc->sc_dev),
224 vrpciu_read(sc, VRPCIU_TRDYVREG));
225 printf("%s: CLKRUN =\t0x%08x\n", device_xname(sc->sc_dev),
226 vrpciu_read_2(sc, VRPCIU_CLKRUNREG));
227 printf("%s: IDREG =\t0x%08x\n", device_xname(sc->sc_dev),
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", device_xname(sc->sc_dev), reg);
231 vrpciu_write(sc, VRPCIU_CONF_BASE + PCI_COMMAND_STATUS_REG, reg);
232 printf("%s: CSR =\t\t0x%08x\n", device_xname(sc->sc_dev),
233 vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_COMMAND_STATUS_REG));
234 printf("%s: CLASS =\t0x%08x\n", device_xname(sc->sc_dev),
235 vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_CLASS_REG));
236 printf("%s: BHLC =\t\t0x%08x\n", device_xname(sc->sc_dev),
237 vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_BHLC_REG));
238 printf("%s: MAIL =\t\t0x%08x\n", device_xname(sc->sc_dev),
239 vrpciu_read(sc, VRPCIU_CONF_BASE + VRPCIU_CONF_MAILREG));
240 printf("%s: MBA1 =\t\t0x%08x\n", device_xname(sc->sc_dev),
241 vrpciu_read(sc, VRPCIU_CONF_BASE + VRPCIU_CONF_MBA1REG));
242 printf("%s: MBA2 =\t\t0x%08x\n", device_xname(sc->sc_dev),
243 vrpciu_read(sc, VRPCIU_CONF_BASE + VRPCIU_CONF_MBA2REG));
244 printf("%s: INTR =\t\t0x%08x\n", device_xname(sc->sc_dev),
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", device_xname(sc->sc_dev),
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 device_xname(sc->sc_dev), 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
283 /* For now, just inherit window mappings set by WinCE. XXX. */
284
285 iot = hpcmips_alloc_bus_space_tag();
286 reg = vrpciu_read(sc, VRPCIU_MIOAWREG);
287 snprintf(tmpbuf, sizeof(tmpbuf), "%s/iot",
288 device_xname(sc->sc_dev));
289 hpcmips_init_bus_space(iot, (struct bus_space_tag_hpcmips *)sc->sc_iot,
290 tmpbuf, VRPCIU_MAW_ADDR(reg), VRPCIU_MAW_SIZE(reg));
291 pba.pba_iot = &iot->bst;
292
293 /*
294 * Just use system bus space tag. It works since WinCE maps
295 * PCI bus space at same offset. But this isn't right thing
296 * of course. XXX.
297 */
298 pba.pba_memt = sc->sc_iot;
299 pba.pba_dmat = &hpcmips_default_bus_dma_tag.bdt;
300 pba.pba_dmat64 = NULL;
301 pba.pba_bus = 0;
302 pba.pba_bridgetag = NULL;
303
304 if (platid_match(&platid, &platid_mask_MACH_LASER5_L_BOARD)) {
305 /*
306 * fix PCI device configuration for L-Router.
307 */
308 /* change IDE controller to native mode */
309 reg = pci_conf_read(pc, pci_make_tag(pc, 0, 16, 0),
310 PCI_CLASS_REG);
311 reg |= PCIIDE_INTERFACE_PCI(0) << PCI_INTERFACE_SHIFT;
312 reg |= PCIIDE_INTERFACE_PCI(1) << PCI_INTERFACE_SHIFT;
313 pci_conf_write(pc, pci_make_tag(pc, 0, 16, 0), PCI_CLASS_REG,
314 reg);
315 /* fix broken BAR setting of fxp0, fxp1 */
316 pci_conf_write(pc, pci_make_tag(pc, 0, 0, 0), PCI_MAPREG_START,
317 0x11100000);
318 pci_conf_write(pc, pci_make_tag(pc, 0, 1, 0), PCI_MAPREG_START,
319 0x11200000);
320 }
321
322 pba.pba_flags = PCI_FLAGS_IO_OKAY | PCI_FLAGS_MEM_OKAY |
323 PCI_FLAGS_MRL_OKAY;
324 pba.pba_pc = pc;
325
326 config_found_ia(self, "pcibus", &pba, pcibusprint);
327 #endif
328 }
329
330 /*
331 * Handle PCI error interrupts.
332 */
333 int
334 vrpciu_intr(void *arg)
335 {
336 struct vrpciu_softc *sc = (struct vrpciu_softc *)arg;
337 u_int32_t isr, baddr;
338
339 isr = vrpciu_read(sc, VRPCIU_INTCNTSTAREG);
340 baddr = vrpciu_read(sc, VRPCIU_BUSERRADREG);
341 printf("%s: status=0x%08x bad addr=0x%08x\n",
342 device_xname(sc->sc_dev), isr, baddr);
343 return ((isr & 0x0f) ? 1 : 0);
344 }
345
346 void
347 vrpciu_attach_hook(device_t parent, device_t self,
348 struct pcibus_attach_args *pba)
349 {
350
351 return;
352 }
353
354 int
355 vrpciu_bus_maxdevs(pci_chipset_tag_t pc, int busno)
356 {
357
358 return (32);
359 }
360
361 int
362 vrpciu_bus_devorder(pci_chipset_tag_t pc, int busno, uint8_t *devs, int maxdevs)
363 {
364 int dev, i, n;
365 uint8_t *devn;
366 char priorities[32];
367 static pcireg_t ids[] = {
368 /* these devices should be attached first */
369 PCI_ID_CODE(PCI_VENDOR_NEC, PCI_PRODUCT_NEC_VRC4173_BCU),
370 };
371
372 n = MIN(32, maxdevs);
373 if (n <= 0)
374 return 0;
375
376 devn = devs + n;
377
378 /* scan PCI devices and check the id table */
379 memset(priorities, 0, sizeof(priorities));
380 for (dev = 0; dev < 32; dev++) {
381 pcireg_t id;
382 id = pci_conf_read(pc, pci_make_tag(pc, 0, dev, 0), PCI_ID_REG);
383 for (i = 0; i < __arraycount(ids); i++)
384 if (id == ids[i])
385 priorities[dev] = 1;
386 }
387
388 /* fill order array */
389 for (i = 1; 0 <= i; i--) {
390 for (dev = 0; dev < 32; dev++) {
391 if (priorities[dev] == i && devs != devn)
392 *devs++ = dev;
393 }
394 }
395
396 return n;
397 }
398
399 pcitag_t
400 vrpciu_make_tag(pci_chipset_tag_t pc, int bus, int device, int function)
401 {
402
403 return ((bus << 16) | (device << 11) | (function << 8));
404 }
405
406 void
407 vrpciu_decompose_tag(pci_chipset_tag_t pc, pcitag_t tag, int *bp, int *dp,
408 int *fp)
409 {
410
411 if (bp != NULL)
412 *bp = (tag >> 16) & 0xff;
413 if (dp != NULL)
414 *dp = (tag >> 11) & 0x1f;
415 if (fp != NULL)
416 *fp = (tag >> 8) & 0x07;
417 }
418
419 pcireg_t
420 vrpciu_conf_read(pci_chipset_tag_t pc, pcitag_t tag, int reg)
421 {
422 struct vrpciu_softc *sc = device_private(pc->pc_dev);
423 u_int32_t val;
424 int bus, device, function;
425
426 pci_decompose_tag(pc, tag, &bus, &device, &function);
427 if (bus == 0) {
428 if (device > 21)
429 return ((pcitag_t)-1);
430 tag = (1 << (device + 11)) | (function << 8); /* Type 0 */
431 } else
432 tag |= VRPCIU_CONF_TYPE1;
433
434 vrpciu_write(sc, VRPCIU_CONFAREG, tag | reg);
435 val = vrpciu_read(sc, VRPCIU_CONFDREG);
436 #if 0
437 printf("%s: conf_read: tag = 0x%08x, reg = 0x%x, val = 0x%08x\n",
438 device_xname(sc->sc_dev), (u_int32_t)tag, reg, val);
439 #endif
440 return (val);
441 }
442
443 void
444 vrpciu_conf_write(pci_chipset_tag_t pc, pcitag_t tag, int reg,
445 pcireg_t data)
446 {
447 struct vrpciu_softc *sc = device_private(pc->pc_dev);
448 int bus, device, function;
449
450 #if 0
451 printf("%s: conf_write: tag = 0x%08x, reg = 0x%x, val = 0x%08x\n",
452 device_xname(sc->sc_dev), (u_int32_t)tag, reg, (u_int32_t)data);
453 #endif
454 vrpciu_decompose_tag(pc, tag, &bus, &device, &function);
455 if (bus == 0) {
456 if (device > 21)
457 return;
458 tag = (1 << (device + 11)) | (function << 8); /* Type 0 */
459 } else
460 tag |= VRPCIU_CONF_TYPE1;
461
462 vrpciu_write(sc, VRPCIU_CONFAREG, tag | reg);
463 vrpciu_write(sc, VRPCIU_CONFDREG, data);
464 }
465
466 int
467 vrpciu_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp)
468 {
469 pci_chipset_tag_t pc = pa->pa_pc;
470 pcitag_t intrtag = pa->pa_intrtag;
471 int bus, dev, func;
472 #ifdef DEBUG
473 int line = pa->pa_intrline;
474 int pin = pa->pa_intrpin;
475 #endif
476
477 pci_decompose_tag(pc, intrtag, &bus, &dev, &func);
478 DPRINTF(("%s(%d, %d, %d): line = %d, pin = %d\n", device_xname(pc->pc_dev),
479 bus, dev, func, line, pin));
480
481 *ihp = CONFIG_HOOK_PCIINTR_ID(bus, dev, func);
482
483 return (0);
484 }
485
486 const char *
487 vrpciu_intr_string(pci_chipset_tag_t pc, pci_intr_handle_t ih)
488 {
489 static char irqstr[sizeof("pciintr") + 16];
490
491 snprintf(irqstr, sizeof(irqstr), "pciintr %d:%d:%d",
492 CONFIG_HOOK_PCIINTR_BUS((int)ih),
493 CONFIG_HOOK_PCIINTR_DEVICE((int)ih),
494 CONFIG_HOOK_PCIINTR_FUNCTION((int)ih));
495
496 return (irqstr);
497 }
498
499 const struct evcnt *
500 vrpciu_intr_evcnt(pci_chipset_tag_t pc, pci_intr_handle_t ih)
501 {
502
503 /* XXX for now, no evcnt parent reported */
504
505 return (NULL);
506 }
507
508 void *
509 vrpciu_intr_establish(pci_chipset_tag_t pc, pci_intr_handle_t ih, int level,
510 int (*func)(void *), void *arg)
511 {
512
513 if (ih == -1)
514 return (NULL);
515 DPRINTF(("vrpciu_intr_establish: %lx\n", ih));
516
517 return (config_hook(CONFIG_HOOK_PCIINTR, ih, CONFIG_HOOK_EXCLUSIVE,
518 (int (*)(void *, int, long, void *))func, arg));
519 }
520
521 void
522 vrpciu_intr_disestablish(pci_chipset_tag_t pc, void *cookie)
523 {
524
525 DPRINTF(("vrpciu_intr_disestablish: %p\n", cookie));
526 config_unhook(cookie);
527 }
528