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1/*-
2 * Copyright 2006-2007 by Juniper Networks.
3 * Copyright 2008 Semihalf.
4 * Copyright 2010 The FreeBSD Foundation
5 * All rights reserved.
6 *
7 * Portions of this software were developed by Semihalf
8 * under sponsorship from the FreeBSD Foundation.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. The name of the author may not be used to endorse or promote products
19 * derived from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * From: FreeBSD: src/sys/powerpc/mpc85xx/pci_ocp.c,v 1.9 2010/03/23 23:46:28 marcel
34 */
35
36#include <sys/cdefs.h>
37__FBSDID("$FreeBSD: stable/10/sys/powerpc/mpc85xx/pci_mpc85xx.c 266000 2014-05-14 01:53:20Z ian $");
37__FBSDID("$FreeBSD: stable/10/sys/powerpc/mpc85xx/pci_mpc85xx.c 266160 2014-05-15 17:30:16Z ian $");
38
39#include <sys/param.h>
40#include <sys/systm.h>
41#include <sys/ktr.h>
42#include <sys/sockio.h>
43#include <sys/mbuf.h>
44#include <sys/malloc.h>
45#include <sys/kernel.h>
46#include <sys/module.h>
47#include <sys/socket.h>
48#include <sys/queue.h>
49#include <sys/bus.h>
50#include <sys/lock.h>
51#include <sys/mutex.h>
52#include <sys/rman.h>
53#include <sys/endian.h>
54
55#include <vm/vm.h>
56#include <vm/pmap.h>
57
58#include <dev/ofw/ofw_pci.h>
59#include <dev/ofw/ofw_bus.h>
60#include <dev/ofw/ofw_bus_subr.h>
61#include <dev/pci/pcivar.h>
62#include <dev/pci/pcireg.h>
63#include <dev/pci/pcib_private.h>
64
65#include <powerpc/ofw/ofw_pci.h>
66
67#include "ofw_bus_if.h"
68#include "pcib_if.h"
69
70#include <machine/resource.h>
71#include <machine/bus.h>
72#include <machine/intr_machdep.h>
73
74#include <powerpc/mpc85xx/mpc85xx.h>
75
76#define REG_CFG_ADDR 0x0000
77#define CONFIG_ACCESS_ENABLE 0x80000000
78
79#define REG_CFG_DATA 0x0004
80#define REG_INT_ACK 0x0008
81
82#define REG_POTAR(n) (0x0c00 + 0x20 * (n))
83#define REG_POTEAR(n) (0x0c04 + 0x20 * (n))
84#define REG_POWBAR(n) (0x0c08 + 0x20 * (n))
85#define REG_POWAR(n) (0x0c10 + 0x20 * (n))
86
87#define REG_PITAR(n) (0x0e00 - 0x20 * (n))
88#define REG_PIWBAR(n) (0x0e08 - 0x20 * (n))
89#define REG_PIWBEAR(n) (0x0e0c - 0x20 * (n))
90#define REG_PIWAR(n) (0x0e10 - 0x20 * (n))
91
92#define REG_PEX_MES_DR 0x0020
93#define REG_PEX_MES_IER 0x0028
94#define REG_PEX_ERR_DR 0x0e00
95#define REG_PEX_ERR_EN 0x0e08
96
97#define PCIR_LTSSM 0x404
98#define LTSSM_STAT_L0 0x16
99
100#define DEVFN(b, s, f) ((b << 16) | (s << 8) | f)
101
102struct fsl_pcib_softc {
103 struct ofw_pci_softc pci_sc;
104 device_t sc_dev;
105
106 int sc_iomem_target;
107 bus_addr_t sc_iomem_alloc, sc_iomem_start, sc_iomem_end;
108 int sc_ioport_target;
109 bus_addr_t sc_ioport_alloc, sc_ioport_start, sc_ioport_end;
110
111 struct resource *sc_res;
112 bus_space_handle_t sc_bsh;
113 bus_space_tag_t sc_bst;
114 int sc_rid;
115
116 int sc_busnr;
117 int sc_pcie;
118 uint8_t sc_pcie_capreg; /* PCI-E Capability Reg Set */
119
120 /* Devices that need special attention. */
121 int sc_devfn_tundra;
122 int sc_devfn_via_ide;
123};
124
125/* Local forward declerations. */
126static uint32_t fsl_pcib_cfgread(struct fsl_pcib_softc *, u_int, u_int, u_int,
127 u_int, int);
128static void fsl_pcib_cfgwrite(struct fsl_pcib_softc *, u_int, u_int, u_int,
129 u_int, uint32_t, int);
130static int fsl_pcib_decode_win(phandle_t, struct fsl_pcib_softc *);
131static void fsl_pcib_err_init(device_t);
132static void fsl_pcib_inbound(struct fsl_pcib_softc *, int, int, u_long,
133 u_long, u_long);
134static int fsl_pcib_init(struct fsl_pcib_softc *, int, int);
135static void fsl_pcib_outbound(struct fsl_pcib_softc *, int, int, u_long,
136 u_long, u_long);
137
138/* Forward declerations. */
139static int fsl_pcib_attach(device_t);
140static int fsl_pcib_detach(device_t);
141static int fsl_pcib_probe(device_t);
142
143static int fsl_pcib_maxslots(device_t);
144static uint32_t fsl_pcib_read_config(device_t, u_int, u_int, u_int, u_int, int);
145static void fsl_pcib_write_config(device_t, u_int, u_int, u_int, u_int,
146 uint32_t, int);
147
148/* Configuration r/w mutex. */
149struct mtx pcicfg_mtx;
150static int mtx_initialized = 0;
151
152/*
153 * Bus interface definitions.
154 */
155static device_method_t fsl_pcib_methods[] = {
156 /* Device interface */
157 DEVMETHOD(device_probe, fsl_pcib_probe),
158 DEVMETHOD(device_attach, fsl_pcib_attach),
159 DEVMETHOD(device_detach, fsl_pcib_detach),
160
161 /* pcib interface */
162 DEVMETHOD(pcib_maxslots, fsl_pcib_maxslots),
163 DEVMETHOD(pcib_read_config, fsl_pcib_read_config),
164 DEVMETHOD(pcib_write_config, fsl_pcib_write_config),
165
166 DEVMETHOD_END
167};
168
169static devclass_t fsl_pcib_devclass;
170
171DEFINE_CLASS_1(pcib, fsl_pcib_driver, fsl_pcib_methods,
172 sizeof(struct fsl_pcib_softc), ofw_pci_driver);
173DRIVER_MODULE(pcib, nexus, fsl_pcib_driver, fsl_pcib_devclass, 0, 0);
173DRIVER_MODULE(pcib, ofwbus, fsl_pcib_driver, fsl_pcib_devclass, 0, 0);
174
175static int
176fsl_pcib_probe(device_t dev)
177{
178
179 if (ofw_bus_get_type(dev) == NULL ||
180 strcmp(ofw_bus_get_type(dev), "pci") != 0)
181 return (ENXIO);
182
183 if (!(ofw_bus_is_compatible(dev, "fsl,mpc8540-pci") ||
184 ofw_bus_is_compatible(dev, "fsl,mpc8548-pcie")))
185 return (ENXIO);
186
187 device_set_desc(dev, "Freescale Integrated PCI/PCI-E Controller");
188 return (BUS_PROBE_DEFAULT);
189}
190
191static int
192fsl_pcib_attach(device_t dev)
193{
194 struct fsl_pcib_softc *sc;
195 phandle_t node;
196 uint32_t cfgreg;
197 int maxslot, error;
198 uint8_t ltssm, capptr;
199
200 sc = device_get_softc(dev);
201 sc->sc_dev = dev;
202
203 sc->sc_rid = 0;
204 sc->sc_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->sc_rid,
205 RF_ACTIVE);
206 if (sc->sc_res == NULL) {
207 device_printf(dev, "could not map I/O memory\n");
208 return (ENXIO);
209 }
210 sc->sc_bst = rman_get_bustag(sc->sc_res);
211 sc->sc_bsh = rman_get_bushandle(sc->sc_res);
212 sc->sc_busnr = 0;
213
214 if (!mtx_initialized) {
215 mtx_init(&pcicfg_mtx, "pcicfg", NULL, MTX_SPIN);
216 mtx_initialized = 1;
217 }
218
219 cfgreg = fsl_pcib_cfgread(sc, 0, 0, 0, PCIR_VENDOR, 2);
220 if (cfgreg != 0x1057 && cfgreg != 0x1957)
221 goto err;
222
223 capptr = fsl_pcib_cfgread(sc, 0, 0, 0, PCIR_CAP_PTR, 1);
224 while (capptr != 0) {
225 cfgreg = fsl_pcib_cfgread(sc, 0, 0, 0, capptr, 2);
226 switch (cfgreg & 0xff) {
227 case PCIY_PCIX:
228 break;
229 case PCIY_EXPRESS:
230 sc->sc_pcie = 1;
231 sc->sc_pcie_capreg = capptr;
232 break;
233 }
234 capptr = (cfgreg >> 8) & 0xff;
235 }
236
237 node = ofw_bus_get_node(dev);
238
239 /*
240 * Initialize generic OF PCI interface (ranges, etc.)
241 */
242
243 error = ofw_pci_init(dev);
244 if (error)
245 return (error);
246
247 /*
248 * Configure decode windows for PCI(E) access.
249 */
250 if (fsl_pcib_decode_win(node, sc) != 0)
251 goto err;
252
253 cfgreg = fsl_pcib_cfgread(sc, 0, 0, 0, PCIR_COMMAND, 2);
254 cfgreg |= PCIM_CMD_SERRESPEN | PCIM_CMD_BUSMASTEREN | PCIM_CMD_MEMEN |
255 PCIM_CMD_PORTEN;
256 fsl_pcib_cfgwrite(sc, 0, 0, 0, PCIR_COMMAND, cfgreg, 2);
257
258 sc->sc_devfn_tundra = -1;
259 sc->sc_devfn_via_ide = -1;
260
261
262 /*
263 * Scan bus using firmware configured, 0 based bus numbering.
264 */
265 sc->sc_busnr = 0;
266 maxslot = (sc->sc_pcie) ? 0 : PCI_SLOTMAX;
267 fsl_pcib_init(sc, sc->sc_busnr, maxslot);
268
269 if (sc->sc_pcie) {
270 ltssm = fsl_pcib_cfgread(sc, 0, 0, 0, PCIR_LTSSM, 1);
271 if (ltssm < LTSSM_STAT_L0) {
272 if (bootverbose)
273 printf("PCI %d: no PCIE link, skipping\n",
274 device_get_unit(dev));
275 return (0);
276 }
277 }
278
279 fsl_pcib_err_init(dev);
280
281 return (ofw_pci_attach(dev));
282
283err:
284 return (ENXIO);
285}
286
287static uint32_t
288fsl_pcib_cfgread(struct fsl_pcib_softc *sc, u_int bus, u_int slot, u_int func,
289 u_int reg, int bytes)
290{
291 uint32_t addr, data;
292
293 if (bus == sc->sc_busnr - 1)
294 bus = 0;
295
296 addr = CONFIG_ACCESS_ENABLE;
297 addr |= (bus & 0xff) << 16;
298 addr |= (slot & 0x1f) << 11;
299 addr |= (func & 0x7) << 8;
300 addr |= reg & 0xfc;
301 if (sc->sc_pcie)
302 addr |= (reg & 0xf00) << 16;
303
304 mtx_lock_spin(&pcicfg_mtx);
305 bus_space_write_4(sc->sc_bst, sc->sc_bsh, REG_CFG_ADDR, addr);
306
307 switch (bytes) {
308 case 1:
309 data = bus_space_read_1(sc->sc_bst, sc->sc_bsh,
310 REG_CFG_DATA + (reg & 3));
311 break;
312 case 2:
313 data = le16toh(bus_space_read_2(sc->sc_bst, sc->sc_bsh,
314 REG_CFG_DATA + (reg & 2)));
315 break;
316 case 4:
317 data = le32toh(bus_space_read_4(sc->sc_bst, sc->sc_bsh,
318 REG_CFG_DATA));
319 break;
320 default:
321 data = ~0;
322 break;
323 }
324 mtx_unlock_spin(&pcicfg_mtx);
325 return (data);
326}
327
328static void
329fsl_pcib_cfgwrite(struct fsl_pcib_softc *sc, u_int bus, u_int slot, u_int func,
330 u_int reg, uint32_t data, int bytes)
331{
332 uint32_t addr;
333
334 if (bus == sc->sc_busnr - 1)
335 bus = 0;
336
337 addr = CONFIG_ACCESS_ENABLE;
338 addr |= (bus & 0xff) << 16;
339 addr |= (slot & 0x1f) << 11;
340 addr |= (func & 0x7) << 8;
341 addr |= reg & 0xfc;
342 if (sc->sc_pcie)
343 addr |= (reg & 0xf00) << 16;
344
345 mtx_lock_spin(&pcicfg_mtx);
346 bus_space_write_4(sc->sc_bst, sc->sc_bsh, REG_CFG_ADDR, addr);
347
348 switch (bytes) {
349 case 1:
350 bus_space_write_1(sc->sc_bst, sc->sc_bsh,
351 REG_CFG_DATA + (reg & 3), data);
352 break;
353 case 2:
354 bus_space_write_2(sc->sc_bst, sc->sc_bsh,
355 REG_CFG_DATA + (reg & 2), htole16(data));
356 break;
357 case 4:
358 bus_space_write_4(sc->sc_bst, sc->sc_bsh,
359 REG_CFG_DATA, htole32(data));
360 break;
361 }
362 mtx_unlock_spin(&pcicfg_mtx);
363}
364
365#if 0
366static void
367dump(struct fsl_pcib_softc *sc)
368{
369 unsigned int i;
370
371#define RD(o) bus_space_read_4(sc->sc_bst, sc->sc_bsh, o)
372 for (i = 0; i < 5; i++) {
373 printf("POTAR%u =0x%08x\n", i, RD(REG_POTAR(i)));
374 printf("POTEAR%u =0x%08x\n", i, RD(REG_POTEAR(i)));
375 printf("POWBAR%u =0x%08x\n", i, RD(REG_POWBAR(i)));
376 printf("POWAR%u =0x%08x\n", i, RD(REG_POWAR(i)));
377 }
378 printf("\n");
379 for (i = 1; i < 4; i++) {
380 printf("PITAR%u =0x%08x\n", i, RD(REG_PITAR(i)));
381 printf("PIWBAR%u =0x%08x\n", i, RD(REG_PIWBAR(i)));
382 printf("PIWBEAR%u=0x%08x\n", i, RD(REG_PIWBEAR(i)));
383 printf("PIWAR%u =0x%08x\n", i, RD(REG_PIWAR(i)));
384 }
385 printf("\n");
386#undef RD
387
388 for (i = 0; i < 0x48; i += 4) {
389 printf("cfg%02x=0x%08x\n", i, fsl_pcib_cfgread(sc, 0, 0, 0,
390 i, 4));
391 }
392}
393#endif
394
395static int
396fsl_pcib_maxslots(device_t dev)
397{
398 struct fsl_pcib_softc *sc = device_get_softc(dev);
399
400 return ((sc->sc_pcie) ? 0 : PCI_SLOTMAX);
401}
402
403static uint32_t
404fsl_pcib_read_config(device_t dev, u_int bus, u_int slot, u_int func,
405 u_int reg, int bytes)
406{
407 struct fsl_pcib_softc *sc = device_get_softc(dev);
408 u_int devfn;
409
410 if (bus == sc->sc_busnr && !sc->sc_pcie && slot < 10)
411 return (~0);
412 devfn = DEVFN(bus, slot, func);
413 if (devfn == sc->sc_devfn_tundra)
414 return (~0);
415 if (devfn == sc->sc_devfn_via_ide && reg == PCIR_INTPIN)
416 return (1);
417 return (fsl_pcib_cfgread(sc, bus, slot, func, reg, bytes));
418}
419
420static void
421fsl_pcib_write_config(device_t dev, u_int bus, u_int slot, u_int func,
422 u_int reg, uint32_t val, int bytes)
423{
424 struct fsl_pcib_softc *sc = device_get_softc(dev);
425
426 if (bus == sc->sc_busnr && !sc->sc_pcie && slot < 10)
427 return;
428 fsl_pcib_cfgwrite(sc, bus, slot, func, reg, val, bytes);
429}
430
431static void
432fsl_pcib_init_via(struct fsl_pcib_softc *sc, uint16_t device, int bus,
433 int slot, int fn)
434{
435
436 if (device == 0x0686) {
437 fsl_pcib_write_config(sc->sc_dev, bus, slot, fn, 0x52, 0x34, 1);
438 fsl_pcib_write_config(sc->sc_dev, bus, slot, fn, 0x77, 0x00, 1);
439 fsl_pcib_write_config(sc->sc_dev, bus, slot, fn, 0x83, 0x98, 1);
440 fsl_pcib_write_config(sc->sc_dev, bus, slot, fn, 0x85, 0x03, 1);
441 } else if (device == 0x0571) {
442 sc->sc_devfn_via_ide = DEVFN(bus, slot, fn);
443 fsl_pcib_write_config(sc->sc_dev, bus, slot, fn, 0x40, 0x0b, 1);
444 }
445}
446
447static int
448fsl_pcib_init_bar(struct fsl_pcib_softc *sc, int bus, int slot, int func,
449 int barno)
450{
451 bus_addr_t *allocp;
452 uint32_t addr, mask, size;
453 int reg, width;
454
455 reg = PCIR_BAR(barno);
456
457 if (DEVFN(bus, slot, func) == sc->sc_devfn_via_ide) {
458 switch (barno) {
459 case 0: addr = 0x1f0; break;
460 case 1: addr = 0x3f4; break;
461 case 2: addr = 0x170; break;
462 case 3: addr = 0x374; break;
463 case 4: addr = 0xcc0; break;
464 default: return (1);
465 }
466 fsl_pcib_write_config(sc->sc_dev, bus, slot, func, reg, addr, 4);
467 return (1);
468 }
469
470 fsl_pcib_write_config(sc->sc_dev, bus, slot, func, reg, ~0, 4);
471 size = fsl_pcib_read_config(sc->sc_dev, bus, slot, func, reg, 4);
472 if (size == 0)
473 return (1);
474 width = ((size & 7) == 4) ? 2 : 1;
475
476 if (size & 1) { /* I/O port */
477 allocp = &sc->sc_ioport_alloc;
478 size &= ~3;
479 if ((size & 0xffff0000) == 0)
480 size |= 0xffff0000;
481 } else { /* memory */
482 allocp = &sc->sc_iomem_alloc;
483 size &= ~15;
484 }
485 mask = ~size;
486 size = mask + 1;
487 /* Sanity check (must be a power of 2). */
488 if (size & mask)
489 return (width);
490
491 addr = (*allocp + mask) & ~mask;
492 *allocp = addr + size;
493
494 if (bootverbose)
495 printf("PCI %u:%u:%u:%u: reg %x: size=%08x: addr=%08x\n",
496 device_get_unit(sc->sc_dev), bus, slot, func, reg,
497 size, addr);
498
499 fsl_pcib_write_config(sc->sc_dev, bus, slot, func, reg, addr, 4);
500 if (width == 2)
501 fsl_pcib_write_config(sc->sc_dev, bus, slot, func, reg + 4,
502 0, 4);
503 return (width);
504}
505
506static int
507fsl_pcib_init(struct fsl_pcib_softc *sc, int bus, int maxslot)
508{
509 int secbus;
510 int old_pribus, old_secbus, old_subbus;
511 int new_pribus, new_secbus, new_subbus;
512 int slot, func, maxfunc;
513 int bar, maxbar;
514 uint16_t vendor, device;
515 uint8_t command, hdrtype, class, subclass;
516
517 secbus = bus;
518 for (slot = 0; slot <= maxslot; slot++) {
519 maxfunc = 0;
520 for (func = 0; func <= maxfunc; func++) {
521 hdrtype = fsl_pcib_read_config(sc->sc_dev, bus, slot,
522 func, PCIR_HDRTYPE, 1);
523
524 if ((hdrtype & PCIM_HDRTYPE) > PCI_MAXHDRTYPE)
525 continue;
526
527 if (func == 0 && (hdrtype & PCIM_MFDEV))
528 maxfunc = PCI_FUNCMAX;
529
530 vendor = fsl_pcib_read_config(sc->sc_dev, bus, slot,
531 func, PCIR_VENDOR, 2);
532 device = fsl_pcib_read_config(sc->sc_dev, bus, slot,
533 func, PCIR_DEVICE, 2);
534
535 if (vendor == 0x1957 && device == 0x3fff) {
536 sc->sc_devfn_tundra = DEVFN(bus, slot, func);
537 continue;
538 }
539
540 command = fsl_pcib_read_config(sc->sc_dev, bus, slot,
541 func, PCIR_COMMAND, 1);
542 command &= ~(PCIM_CMD_MEMEN | PCIM_CMD_PORTEN);
543 fsl_pcib_write_config(sc->sc_dev, bus, slot, func,
544 PCIR_COMMAND, command, 1);
545
546 if (vendor == 0x1106)
547 fsl_pcib_init_via(sc, device, bus, slot, func);
548
549 /* Program the base address registers. */
550 maxbar = (hdrtype & PCIM_HDRTYPE) ? 1 : 6;
551 bar = 0;
552 while (bar < maxbar)
553 bar += fsl_pcib_init_bar(sc, bus, slot, func,
554 bar);
555
556 /* Put a placeholder interrupt value */
557 fsl_pcib_write_config(sc->sc_dev, bus, slot, func,
558 PCIR_INTLINE, PCI_INVALID_IRQ, 1);
559
560 command |= PCIM_CMD_MEMEN | PCIM_CMD_PORTEN;
561 fsl_pcib_write_config(sc->sc_dev, bus, slot, func,
562 PCIR_COMMAND, command, 1);
563
564 /*
565 * Handle PCI-PCI bridges
566 */
567 class = fsl_pcib_read_config(sc->sc_dev, bus, slot,
568 func, PCIR_CLASS, 1);
569 subclass = fsl_pcib_read_config(sc->sc_dev, bus, slot,
570 func, PCIR_SUBCLASS, 1);
571
572 /* Allow only proper PCI-PCI briges */
573 if (class != PCIC_BRIDGE)
574 continue;
575 if (subclass != PCIS_BRIDGE_PCI)
576 continue;
577
578 secbus++;
579
580 /* Program I/O decoder. */
581 fsl_pcib_write_config(sc->sc_dev, bus, slot, func,
582 PCIR_IOBASEL_1, sc->sc_ioport_start >> 8, 1);
583 fsl_pcib_write_config(sc->sc_dev, bus, slot, func,
584 PCIR_IOLIMITL_1, sc->sc_ioport_end >> 8, 1);
585 fsl_pcib_write_config(sc->sc_dev, bus, slot, func,
586 PCIR_IOBASEH_1, sc->sc_ioport_start >> 16, 2);
587 fsl_pcib_write_config(sc->sc_dev, bus, slot, func,
588 PCIR_IOLIMITH_1, sc->sc_ioport_end >> 16, 2);
589
590 /* Program (non-prefetchable) memory decoder. */
591 fsl_pcib_write_config(sc->sc_dev, bus, slot, func,
592 PCIR_MEMBASE_1, sc->sc_iomem_start >> 16, 2);
593 fsl_pcib_write_config(sc->sc_dev, bus, slot, func,
594 PCIR_MEMLIMIT_1, sc->sc_iomem_end >> 16, 2);
595
596 /* Program prefetchable memory decoder. */
597 fsl_pcib_write_config(sc->sc_dev, bus, slot, func,
598 PCIR_PMBASEL_1, 0x0010, 2);
599 fsl_pcib_write_config(sc->sc_dev, bus, slot, func,
600 PCIR_PMLIMITL_1, 0x000f, 2);
601 fsl_pcib_write_config(sc->sc_dev, bus, slot, func,
602 PCIR_PMBASEH_1, 0x00000000, 4);
603 fsl_pcib_write_config(sc->sc_dev, bus, slot, func,
604 PCIR_PMLIMITH_1, 0x00000000, 4);
605
606 /* Read currect bus register configuration */
607 old_pribus = fsl_pcib_read_config(sc->sc_dev, bus,
608 slot, func, PCIR_PRIBUS_1, 1);
609 old_secbus = fsl_pcib_read_config(sc->sc_dev, bus,
610 slot, func, PCIR_SECBUS_1, 1);
611 old_subbus = fsl_pcib_read_config(sc->sc_dev, bus,
612 slot, func, PCIR_SUBBUS_1, 1);
613
614 if (bootverbose)
615 printf("PCI: reading firmware bus numbers for "
616 "secbus = %d (bus/sec/sub) = (%d/%d/%d)\n",
617 secbus, old_pribus, old_secbus, old_subbus);
618
619 new_pribus = bus;
620 new_secbus = secbus;
621
622 secbus = fsl_pcib_init(sc, secbus,
623 (subclass == PCIS_BRIDGE_PCI) ? PCI_SLOTMAX : 0);
624
625 new_subbus = secbus;
626
627 if (bootverbose)
628 printf("PCI: translate firmware bus numbers "
629 "for secbus %d (%d/%d/%d) -> (%d/%d/%d)\n",
630 secbus, old_pribus, old_secbus, old_subbus,
631 new_pribus, new_secbus, new_subbus);
632
633 fsl_pcib_write_config(sc->sc_dev, bus, slot, func,
634 PCIR_PRIBUS_1, new_pribus, 1);
635 fsl_pcib_write_config(sc->sc_dev, bus, slot, func,
636 PCIR_SECBUS_1, new_secbus, 1);
637 fsl_pcib_write_config(sc->sc_dev, bus, slot, func,
638 PCIR_SUBBUS_1, new_subbus, 1);
639 }
640 }
641
642 return (secbus);
643}
644
645static void
646fsl_pcib_inbound(struct fsl_pcib_softc *sc, int wnd, int tgt, u_long start,
647 u_long size, u_long pci_start)
648{
649 uint32_t attr, bar, tar;
650
651 KASSERT(wnd > 0, ("%s: inbound window 0 is invalid", __func__));
652
653 switch (tgt) {
654 /* XXX OCP85XX_TGTIF_RAM2, OCP85XX_TGTIF_RAM_INTL should be handled */
655 case OCP85XX_TGTIF_RAM1:
656 attr = 0xa0f55000 | (ffsl(size) - 2);
657 break;
658 default:
659 attr = 0;
660 break;
661 }
662 tar = start >> 12;
663 bar = pci_start >> 12;
664
665 bus_space_write_4(sc->sc_bst, sc->sc_bsh, REG_PITAR(wnd), tar);
666 bus_space_write_4(sc->sc_bst, sc->sc_bsh, REG_PIWBEAR(wnd), 0);
667 bus_space_write_4(sc->sc_bst, sc->sc_bsh, REG_PIWBAR(wnd), bar);
668 bus_space_write_4(sc->sc_bst, sc->sc_bsh, REG_PIWAR(wnd), attr);
669}
670
671static void
672fsl_pcib_outbound(struct fsl_pcib_softc *sc, int wnd, int res, u_long start,
673 u_long size, u_long pci_start)
674{
675 uint32_t attr, bar, tar;
676
677 switch (res) {
678 case SYS_RES_MEMORY:
679 attr = 0x80044000 | (ffsl(size) - 2);
680 break;
681 case SYS_RES_IOPORT:
682 attr = 0x80088000 | (ffsl(size) - 2);
683 break;
684 default:
685 attr = 0x0004401f;
686 break;
687 }
688 bar = start >> 12;
689 tar = pci_start >> 12;
690
691 bus_space_write_4(sc->sc_bst, sc->sc_bsh, REG_POTAR(wnd), tar);
692 bus_space_write_4(sc->sc_bst, sc->sc_bsh, REG_POTEAR(wnd), 0);
693 bus_space_write_4(sc->sc_bst, sc->sc_bsh, REG_POWBAR(wnd), bar);
694 bus_space_write_4(sc->sc_bst, sc->sc_bsh, REG_POWAR(wnd), attr);
695}
696
697
698static void
699fsl_pcib_err_init(device_t dev)
700{
701 struct fsl_pcib_softc *sc;
702 uint16_t sec_stat, dsr;
703 uint32_t dcr, err_en;
704
705 sc = device_get_softc(dev);
706
707 sec_stat = fsl_pcib_cfgread(sc, 0, 0, 0, PCIR_SECSTAT_1, 2);
708 if (sec_stat)
709 fsl_pcib_cfgwrite(sc, 0, 0, 0, PCIR_SECSTAT_1, 0xffff, 2);
710 if (sc->sc_pcie) {
711 /* Clear error bits */
712 bus_space_write_4(sc->sc_bst, sc->sc_bsh, REG_PEX_MES_IER,
713 0xffffffff);
714 bus_space_write_4(sc->sc_bst, sc->sc_bsh, REG_PEX_MES_DR,
715 0xffffffff);
716 bus_space_write_4(sc->sc_bst, sc->sc_bsh, REG_PEX_ERR_DR,
717 0xffffffff);
718
719 dsr = fsl_pcib_cfgread(sc, 0, 0, 0,
720 sc->sc_pcie_capreg + PCIER_DEVICE_STA, 2);
721 if (dsr)
722 fsl_pcib_cfgwrite(sc, 0, 0, 0,
723 sc->sc_pcie_capreg + PCIER_DEVICE_STA,
724 0xffff, 2);
725
726 /* Enable all errors reporting */
727 err_en = 0x00bfff00;
728 bus_space_write_4(sc->sc_bst, sc->sc_bsh, REG_PEX_ERR_EN,
729 err_en);
730
731 /* Enable error reporting: URR, FER, NFER */
732 dcr = fsl_pcib_cfgread(sc, 0, 0, 0,
733 sc->sc_pcie_capreg + PCIER_DEVICE_CTL, 4);
734 dcr |= PCIEM_CTL_URR_ENABLE | PCIEM_CTL_FER_ENABLE |
735 PCIEM_CTL_NFER_ENABLE;
736 fsl_pcib_cfgwrite(sc, 0, 0, 0,
737 sc->sc_pcie_capreg + PCIER_DEVICE_CTL, dcr, 4);
738 }
739}
740
741static int
742fsl_pcib_detach(device_t dev)
743{
744
745 if (mtx_initialized) {
746 mtx_destroy(&pcicfg_mtx);
747 mtx_initialized = 0;
748 }
749 return (bus_generic_detach(dev));
750}
751
752static int
753fsl_pcib_decode_win(phandle_t node, struct fsl_pcib_softc *sc)
754{
755 device_t dev;
756 int error, i, trgt;
757
758 dev = sc->sc_dev;
759
760 fsl_pcib_outbound(sc, 0, -1, 0, 0, 0);
761
762 /*
763 * Configure LAW decode windows.
764 */
765 error = law_pci_target(sc->sc_res, &sc->sc_iomem_target,
766 &sc->sc_ioport_target);
767 if (error != 0) {
768 device_printf(dev, "could not retrieve PCI LAW target info\n");
769 return (error);
770 }
771
772 for (i = 0; i < sc->pci_sc.sc_nrange; i++) {
773 switch (sc->pci_sc.sc_range[i].pci_hi &
774 OFW_PCI_PHYS_HI_SPACEMASK) {
775 case OFW_PCI_PHYS_HI_SPACE_CONFIG:
776 continue;
777 case OFW_PCI_PHYS_HI_SPACE_IO:
778 trgt = sc->sc_ioport_target;
779 fsl_pcib_outbound(sc, 2, SYS_RES_IOPORT,
780 sc->pci_sc.sc_range[i].host,
781 sc->pci_sc.sc_range[i].size,
782 sc->pci_sc.sc_range[i].pci);
783 sc->sc_ioport_start = sc->pci_sc.sc_range[i].host;
784 sc->sc_ioport_end = sc->pci_sc.sc_range[i].host +
785 sc->pci_sc.sc_range[i].size;
786 sc->sc_ioport_alloc = 0x1000 + sc->pci_sc.sc_range[i].pci;
787 break;
788 case OFW_PCI_PHYS_HI_SPACE_MEM32:
789 case OFW_PCI_PHYS_HI_SPACE_MEM64:
790 trgt = sc->sc_iomem_target;
791 fsl_pcib_outbound(sc, 1, SYS_RES_MEMORY,
792 sc->pci_sc.sc_range[i].host,
793 sc->pci_sc.sc_range[i].size,
794 sc->pci_sc.sc_range[i].pci);
795 sc->sc_iomem_start = sc->pci_sc.sc_range[i].host;
796 sc->sc_iomem_end = sc->pci_sc.sc_range[i].host +
797 sc->pci_sc.sc_range[i].size;
798 sc->sc_iomem_alloc = sc->pci_sc.sc_range[i].pci;
799 break;
800 default:
801 panic("Unknown range type %#x\n",
802 sc->pci_sc.sc_range[i].pci_hi &
803 OFW_PCI_PHYS_HI_SPACEMASK);
804 }
805 error = law_enable(trgt, sc->pci_sc.sc_range[i].host,
806 sc->pci_sc.sc_range[i].size);
807 if (error != 0) {
808 device_printf(dev, "could not program LAW for range "
809 "%d\n", i);
810 return (error);
811 }
812 }
813
814 /*
815 * Set outbout and inbound windows.
816 */
817 fsl_pcib_outbound(sc, 3, -1, 0, 0, 0);
818 fsl_pcib_outbound(sc, 4, -1, 0, 0, 0);
819
820 fsl_pcib_inbound(sc, 1, -1, 0, 0, 0);
821 fsl_pcib_inbound(sc, 2, -1, 0, 0, 0);
822 fsl_pcib_inbound(sc, 3, OCP85XX_TGTIF_RAM1, 0,
823 2U * 1024U * 1024U * 1024U, 0);
824
825 return (0);
826}
827