1/*-
2 * Copyright (c) 1999, 2000 Matthew R. Green
3 * Copyright (c) 2001 - 2003 by Thomas Moestl <tmm@FreeBSD.org>
4 * Copyright (c) 2005 - 2011 by Marius Strobl <marius@FreeBSD.org>
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 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
23 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
25 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 * from: NetBSD: psycho.c,v 1.39 2001/10/07 20:30:41 eeh Exp
31 * from: FreeBSD: psycho.c 183152 2008-09-18 19:45:22Z marius
32 */
33
34#include <sys/cdefs.h>
|
35__FBSDID("$FreeBSD: head/sys/sparc64/pci/schizo.c 227960 2011-11-24 23:48:22Z marius $");
|
| 35__FBSDID("$FreeBSD: head/sys/sparc64/pci/schizo.c 230664 2012-01-28 22:42:33Z marius $"); |
36
37/*
38 * Driver for `Schizo' Fireplane/Safari to PCI 2.1, `Tomatillo' JBus to
39 * PCI 2.2 and `XMITS' Fireplane/Safari to PCI-X bridges
40 */
41
42#include "opt_ofw_pci.h"
43#include "opt_schizo.h"
44
45#include <sys/param.h>
46#include <sys/systm.h>
47#include <sys/bus.h>
48#include <sys/kernel.h>
49#include <sys/lock.h>
50#include <sys/malloc.h>
51#include <sys/module.h>
52#include <sys/mutex.h>
53#include <sys/pcpu.h>
54#include <sys/rman.h>
55#include <sys/sysctl.h>
56#include <sys/time.h>
57#include <sys/timetc.h>
58
59#include <dev/ofw/ofw_bus.h>
60#include <dev/ofw/ofw_pci.h>
61#include <dev/ofw/openfirm.h>
62
63#include <machine/bus.h>
64#include <machine/bus_common.h>
65#include <machine/bus_private.h>
66#include <machine/fsr.h>
67#include <machine/iommureg.h>
68#include <machine/iommuvar.h>
69#include <machine/resource.h>
70
71#include <dev/pci/pcireg.h>
72#include <dev/pci/pcivar.h>
73
74#include <sparc64/pci/ofw_pci.h>
75#include <sparc64/pci/schizoreg.h>
76#include <sparc64/pci/schizovar.h>
77
78#include "pcib_if.h"
79
80static const struct schizo_desc *schizo_get_desc(device_t);
81static void schizo_set_intr(struct schizo_softc *, u_int, u_int,
82 driver_filter_t);
83static void schizo_dmamap_sync(bus_dma_tag_t dt, bus_dmamap_t map,
84 bus_dmasync_op_t op);
85static void ichip_dmamap_sync(bus_dma_tag_t dt, bus_dmamap_t map,
86 bus_dmasync_op_t op);
87static void schizo_intr_enable(void *);
88static void schizo_intr_disable(void *);
89static void schizo_intr_assign(void *);
90static void schizo_intr_clear(void *);
91static int schizo_intr_register(struct schizo_softc *sc, u_int ino);
92static int schizo_get_intrmap(struct schizo_softc *, u_int,
93 bus_addr_t *, bus_addr_t *);
94static timecounter_get_t schizo_get_timecount;
95
96/* Interrupt handlers */
97static driver_filter_t schizo_pci_bus;
98static driver_filter_t schizo_ue;
99static driver_filter_t schizo_ce;
100static driver_filter_t schizo_host_bus;
101static driver_filter_t schizo_cdma;
102
103/* IOMMU support */
104static void schizo_iommu_init(struct schizo_softc *, int, uint32_t);
105
106/*
107 * Methods
108 */
109static device_probe_t schizo_probe;
110static device_attach_t schizo_attach;
111static bus_read_ivar_t schizo_read_ivar;
112static bus_setup_intr_t schizo_setup_intr;
113static bus_alloc_resource_t schizo_alloc_resource;
114static bus_activate_resource_t schizo_activate_resource;
115static bus_adjust_resource_t schizo_adjust_resource;
116static bus_get_dma_tag_t schizo_get_dma_tag;
117static pcib_maxslots_t schizo_maxslots;
118static pcib_read_config_t schizo_read_config;
119static pcib_write_config_t schizo_write_config;
120static pcib_route_interrupt_t schizo_route_interrupt;
121static ofw_bus_get_node_t schizo_get_node;
122static ofw_pci_setup_device_t schizo_setup_device;
123
124static device_method_t schizo_methods[] = {
125 /* Device interface */
126 DEVMETHOD(device_probe, schizo_probe),
127 DEVMETHOD(device_attach, schizo_attach),
128 DEVMETHOD(device_shutdown, bus_generic_shutdown),
129 DEVMETHOD(device_suspend, bus_generic_suspend),
130 DEVMETHOD(device_resume, bus_generic_resume),
131
132 /* Bus interface */
133 DEVMETHOD(bus_read_ivar, schizo_read_ivar),
134 DEVMETHOD(bus_setup_intr, schizo_setup_intr),
135 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
136 DEVMETHOD(bus_alloc_resource, schizo_alloc_resource),
137 DEVMETHOD(bus_activate_resource, schizo_activate_resource),
138 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
139 DEVMETHOD(bus_adjust_resource, schizo_adjust_resource),
140 DEVMETHOD(bus_release_resource, bus_generic_release_resource),
141 DEVMETHOD(bus_get_dma_tag, schizo_get_dma_tag),
142
143 /* pcib interface */
144 DEVMETHOD(pcib_maxslots, schizo_maxslots),
145 DEVMETHOD(pcib_read_config, schizo_read_config),
146 DEVMETHOD(pcib_write_config, schizo_write_config),
147 DEVMETHOD(pcib_route_interrupt, schizo_route_interrupt),
148
149 /* ofw_bus interface */
150 DEVMETHOD(ofw_bus_get_node, schizo_get_node),
151
152 /* ofw_pci interface */
153 DEVMETHOD(ofw_pci_setup_device, schizo_setup_device),
154
155 DEVMETHOD_END
156};
157
158static devclass_t schizo_devclass;
159
160DEFINE_CLASS_0(pcib, schizo_driver, schizo_methods,
161 sizeof(struct schizo_softc));
162EARLY_DRIVER_MODULE(schizo, nexus, schizo_driver, schizo_devclass, 0, 0,
163 BUS_PASS_BUS);
164
165static SLIST_HEAD(, schizo_softc) schizo_softcs =
166 SLIST_HEAD_INITIALIZER(schizo_softcs);
167
168static const struct intr_controller schizo_ic = {
169 schizo_intr_enable,
170 schizo_intr_disable,
171 schizo_intr_assign,
172 schizo_intr_clear
173};
174
175struct schizo_icarg {
176 struct schizo_softc *sica_sc;
177 bus_addr_t sica_map;
178 bus_addr_t sica_clr;
179};
180
|
181#define SCHIZO_CDMA_TIMEOUT 1 /* 1 second per try */
182#define SCHIZO_CDMA_TRIES 15 |
183#define SCHIZO_PERF_CNT_QLTY 100
184
185#define SCHIZO_SPC_BARRIER(spc, sc, offs, len, flags) \
186 bus_barrier((sc)->sc_mem_res[(spc)], (offs), (len), (flags))
187#define SCHIZO_SPC_READ_8(spc, sc, offs) \
188 bus_read_8((sc)->sc_mem_res[(spc)], (offs))
189#define SCHIZO_SPC_WRITE_8(spc, sc, offs, v) \
190 bus_write_8((sc)->sc_mem_res[(spc)], (offs), (v))
191
192#ifndef SCHIZO_DEBUG
193#define SCHIZO_SPC_SET(spc, sc, offs, reg, v) \
194 SCHIZO_SPC_WRITE_8((spc), (sc), (offs), (v))
195#else
196#define SCHIZO_SPC_SET(spc, sc, offs, reg, v) do { \
197 device_printf((sc)->sc_dev, reg " 0x%016llx -> 0x%016llx\n", \
198 (unsigned long long)SCHIZO_SPC_READ_8((spc), (sc), (offs)), \
199 (unsigned long long)(v)); \
200 SCHIZO_SPC_WRITE_8((spc), (sc), (offs), (v)); \
201 } while (0)
202#endif
203
204#define SCHIZO_PCI_READ_8(sc, offs) \
205 SCHIZO_SPC_READ_8(STX_PCI, (sc), (offs))
206#define SCHIZO_PCI_WRITE_8(sc, offs, v) \
207 SCHIZO_SPC_WRITE_8(STX_PCI, (sc), (offs), (v))
208#define SCHIZO_CTRL_READ_8(sc, offs) \
209 SCHIZO_SPC_READ_8(STX_CTRL, (sc), (offs))
210#define SCHIZO_CTRL_WRITE_8(sc, offs, v) \
211 SCHIZO_SPC_WRITE_8(STX_CTRL, (sc), (offs), (v))
212#define SCHIZO_PCICFG_READ_8(sc, offs) \
213 SCHIZO_SPC_READ_8(STX_PCICFG, (sc), (offs))
214#define SCHIZO_PCICFG_WRITE_8(sc, offs, v) \
215 SCHIZO_SPC_WRITE_8(STX_PCICFG, (sc), (offs), (v))
216#define SCHIZO_ICON_READ_8(sc, offs) \
217 SCHIZO_SPC_READ_8(STX_ICON, (sc), (offs))
218#define SCHIZO_ICON_WRITE_8(sc, offs, v) \
219 SCHIZO_SPC_WRITE_8(STX_ICON, (sc), (offs), (v))
220
221#define SCHIZO_PCI_SET(sc, offs, v) \
222 SCHIZO_SPC_SET(STX_PCI, (sc), (offs), # offs, (v))
223#define SCHIZO_CTRL_SET(sc, offs, v) \
224 SCHIZO_SPC_SET(STX_CTRL, (sc), (offs), # offs, (v))
225
226struct schizo_desc {
227 const char *sd_string;
228 int sd_mode;
229 const char *sd_name;
230};
231
232static const struct schizo_desc const schizo_compats[] = {
233 { "pci108e,8001", SCHIZO_MODE_SCZ, "Schizo" },
234#if 0
235 { "pci108e,8002", SCHIZO_MODE_XMS, "XMITS" },
236#endif
237 { "pci108e,a801", SCHIZO_MODE_TOM, "Tomatillo" },
238 { NULL, 0, NULL }
239};
240
241static const struct schizo_desc *
242schizo_get_desc(device_t dev)
243{
244 const struct schizo_desc *desc;
245 const char *compat;
246
247 compat = ofw_bus_get_compat(dev);
248 if (compat == NULL)
249 return (NULL);
250 for (desc = schizo_compats; desc->sd_string != NULL; desc++)
251 if (strcmp(desc->sd_string, compat) == 0)
252 return (desc);
253 return (NULL);
254}
255
256static int
257schizo_probe(device_t dev)
258{
259 const char *dtype;
260
261 dtype = ofw_bus_get_type(dev);
262 if (dtype != NULL && strcmp(dtype, OFW_TYPE_PCI) == 0 &&
263 schizo_get_desc(dev) != NULL) {
264 device_set_desc(dev, "Sun Host-PCI bridge");
265 return (0);
266 }
267 return (ENXIO);
268}
269
270static int
271schizo_attach(device_t dev)
272{
273 struct ofw_pci_ranges *range;
274 const struct schizo_desc *desc;
275 struct schizo_softc *asc, *sc, *osc;
276 struct timecounter *tc;
277 uint64_t ino_bitmap, reg;
278 phandle_t node;
279 uint32_t prop, prop_array[2];
280 int i, j, mode, rid, tsbsize;
281
282 sc = device_get_softc(dev);
283 node = ofw_bus_get_node(dev);
284 desc = schizo_get_desc(dev);
285 mode = desc->sd_mode;
286
287 sc->sc_dev = dev;
288 sc->sc_node = node;
289 sc->sc_mode = mode;
290 sc->sc_flags = 0;
291
292 /*
293 * The Schizo has three register banks:
294 * (0) per-PBM PCI configuration and status registers, but for bus B
295 * shared with the UPA64s interrupt mapping register banks
296 * (1) shared Schizo controller configuration and status registers
297 * (2) per-PBM PCI configuration space
298 *
299 * The Tomatillo has four register banks:
300 * (0) per-PBM PCI configuration and status registers
301 * (1) per-PBM Tomatillo controller configuration registers, but on
302 * machines having the `jbusppm' device shared with its Estar
303 * register bank for bus A
304 * (2) per-PBM PCI configuration space
305 * (3) per-PBM interrupt concentrator registers
306 */
307 sc->sc_half = (bus_get_resource_start(dev, SYS_RES_MEMORY, STX_PCI) >>
308 20) & 1;
309 for (i = 0; i < (mode == SCHIZO_MODE_SCZ ? SCZ_NREG : TOM_NREG);
310 i++) {
311 rid = i;
312 sc->sc_mem_res[i] = bus_alloc_resource_any(dev,
313 SYS_RES_MEMORY, &rid,
314 (((mode == SCHIZO_MODE_SCZ && ((sc->sc_half == 1 &&
315 i == STX_PCI) || i == STX_CTRL)) ||
316 (mode == SCHIZO_MODE_TOM && sc->sc_half == 0 &&
317 i == STX_CTRL)) ? RF_SHAREABLE : 0) | RF_ACTIVE);
318 if (sc->sc_mem_res[i] == NULL)
319 panic("%s: could not allocate register bank %d",
320 __func__, i);
321 }
322
323 /*
324 * Match other Schizos that are already configured against
325 * the controller base physical address. This will be the
326 * same for a pair of devices that share register space.
327 */
328 osc = NULL;
329 SLIST_FOREACH(asc, &schizo_softcs, sc_link) {
330 if (rman_get_start(asc->sc_mem_res[STX_CTRL]) ==
331 rman_get_start(sc->sc_mem_res[STX_CTRL])) {
332 /* Found partner. */
333 osc = asc;
334 break;
335 }
336 }
337 if (osc == NULL) {
338 sc->sc_mtx = malloc(sizeof(*sc->sc_mtx), M_DEVBUF,
339 M_NOWAIT | M_ZERO);
340 if (sc->sc_mtx == NULL)
341 panic("%s: could not malloc mutex", __func__);
342 mtx_init(sc->sc_mtx, "pcib_mtx", NULL, MTX_SPIN);
343 } else {
344 if (sc->sc_mode != SCHIZO_MODE_SCZ)
345 panic("%s: no partner expected", __func__);
346 if (mtx_initialized(osc->sc_mtx) == 0)
347 panic("%s: mutex not initialized", __func__);
348 sc->sc_mtx = osc->sc_mtx;
349 }
350
351 if (OF_getprop(node, "portid", &sc->sc_ign, sizeof(sc->sc_ign)) == -1)
352 panic("%s: could not determine IGN", __func__);
353 if (OF_getprop(node, "version#", &sc->sc_ver, sizeof(sc->sc_ver)) ==
354 -1)
355 panic("%s: could not determine version", __func__);
356 if (mode == SCHIZO_MODE_XMS && OF_getprop(node, "module-revision#",
357 &sc->sc_mrev, sizeof(sc->sc_mrev)) == -1)
358 panic("%s: could not determine module-revision", __func__);
359 if (OF_getprop(node, "clock-frequency", &prop, sizeof(prop)) == -1)
360 prop = 33000000;
361
362 if (mode == SCHIZO_MODE_XMS && (SCHIZO_PCI_READ_8(sc, STX_PCI_CTRL) &
363 XMS_PCI_CTRL_X_MODE) != 0) {
364 if (sc->sc_mrev < 1)
365 panic("PCI-X mode unsupported");
366 sc->sc_flags |= SCHIZO_FLAGS_XMODE;
367 }
368
369 device_printf(dev, "%s, version %d, ", desc->sd_name, sc->sc_ver);
370 if (mode == SCHIZO_MODE_XMS)
371 printf("module-revision %d, ", sc->sc_mrev);
372 printf("IGN %#x, bus %c, PCI%s mode, %dMHz\n", sc->sc_ign,
373 'A' + sc->sc_half, (sc->sc_flags & SCHIZO_FLAGS_XMODE) != 0 ?
374 "-X" : "", prop / 1000 / 1000);
375
376 /* Set up the PCI interrupt retry timer. */
377 SCHIZO_PCI_SET(sc, STX_PCI_INTR_RETRY_TIM, 5);
378
379 /* Set up the PCI control register. */
380 reg = SCHIZO_PCI_READ_8(sc, STX_PCI_CTRL);
381 reg &= ~(TOM_PCI_CTRL_DTO_IEN | STX_PCI_CTRL_ARB_PARK |
382 STX_PCI_CTRL_ARB_MASK);
383 reg |= STX_PCI_CTRL_MMU_IEN | STX_PCI_CTRL_SBH_IEN |
384 STX_PCI_CTRL_ERR_IEN;
385 if (OF_getproplen(node, "no-bus-parking") < 0)
386 reg |= STX_PCI_CTRL_ARB_PARK;
387 if (mode == SCHIZO_MODE_XMS && sc->sc_mrev == 1)
388 reg |= XMS_PCI_CTRL_XMITS10_ARB_MASK;
389 else
390 reg |= STX_PCI_CTRL_ARB_MASK;
391 if (mode == SCHIZO_MODE_TOM) {
392 reg |= TOM_PCI_CTRL_PRM | TOM_PCI_CTRL_PRO | TOM_PCI_CTRL_PRL;
393 if (sc->sc_ver <= 1) /* revision <= 2.0 */
394 reg |= TOM_PCI_CTRL_DTO_IEN;
395 else
396 reg |= STX_PCI_CTRL_PTO;
397 } else if (mode == SCHIZO_MODE_XMS) {
398 SCHIZO_PCI_SET(sc, XMS_PCI_PARITY_DETECT, 0x3fff);
399 SCHIZO_PCI_SET(sc, XMS_PCI_UPPER_RETRY_COUNTER, 0x3e8);
400 reg |= XMS_PCI_CTRL_X_ERRINT_EN;
401 }
402 SCHIZO_PCI_SET(sc, STX_PCI_CTRL, reg);
403
404 /* Set up the PCI diagnostic register. */
405 reg = SCHIZO_PCI_READ_8(sc, STX_PCI_DIAG);
406 reg &= ~(SCZ_PCI_DIAG_RTRYARB_DIS | STX_PCI_DIAG_RETRY_DIS |
407 STX_PCI_DIAG_INTRSYNC_DIS);
408 SCHIZO_PCI_SET(sc, STX_PCI_DIAG, reg);
409
410 /*
411 * Enable DMA write parity error interrupts of version >= 7 (i.e.
412 * revision >= 2.5) Schizo and XMITS (enabling it on XMITS < 3.0 has
413 * no effect though).
414 */
415 if ((mode == SCHIZO_MODE_SCZ && sc->sc_ver >= 7) ||
416 mode == SCHIZO_MODE_XMS) {
417 reg = SCHIZO_PCI_READ_8(sc, SX_PCI_CFG_ICD);
418 reg |= SX_PCI_CFG_ICD_DMAW_PERR_IEN;
419 SCHIZO_PCI_SET(sc, SX_PCI_CFG_ICD, reg);
420 }
421
422 /*
423 * On Tomatillo clear the I/O prefetch lengths (workaround for a
424 * Jalapeno bug).
425 */
426 if (mode == SCHIZO_MODE_TOM)
427 SCHIZO_PCI_SET(sc, TOM_PCI_IOC_CSR, TOM_PCI_IOC_PW |
428 (1 << TOM_PCI_IOC_PREF_OFF_SHIFT) | TOM_PCI_IOC_CPRM |
429 TOM_PCI_IOC_CPRO | TOM_PCI_IOC_CPRL);
430
431 /*
432 * Hunt through all the interrupt mapping regs and register
433 * the interrupt controller for our interrupt vectors. We do
434 * this early in order to be able to catch stray interrupts.
435 * This is complicated by the fact that a pair of Schizo PBMs
436 * shares one IGN.
437 */
438 i = OF_getprop(node, "ino-bitmap", (void *)prop_array,
439 sizeof(prop_array));
440 if (i != -1)
441 ino_bitmap = ((uint64_t)prop_array[1] << 32) | prop_array[0];
442 else {
443 /*
444 * If the ino-bitmap property is missing, just provide the
445 * default set of interrupts for this controller and let
446 * schizo_setup_intr() take care of child interrupts.
447 */
448 if (sc->sc_half == 0)
449 ino_bitmap = (1ULL << STX_UE_INO) |
450 (1ULL << STX_CE_INO) |
451 (1ULL << STX_PCIERR_A_INO) |
452 (1ULL << STX_BUS_INO);
453 else
454 ino_bitmap = 1ULL << STX_PCIERR_B_INO;
455 }
456 for (i = 0; i <= STX_MAX_INO; i++) {
457 if ((ino_bitmap & (1ULL << i)) == 0)
458 continue;
459 if (i == STX_FB0_INO || i == STX_FB1_INO)
460 /* Leave for upa(4). */
461 continue;
462 j = schizo_intr_register(sc, i);
463 if (j != 0)
464 device_printf(dev, "could not register interrupt "
465 "controller for INO %d (%d)\n", i, j);
466 }
467
468 /*
469 * Setup Safari/JBus performance counter 0 in bus cycle counting
470 * mode as timecounter. Unfortunately, this is broken with at
471 * least the version 4 Tomatillos found in Fire V120 and Blade
472 * 1500, which apparently actually count some different event at
473 * ~0.5 and 3MHz respectively instead (also when running in full
474 * power mode). Besides, one counter seems to be shared by a
475 * "pair" of Tomatillos, too.
476 */
477 if (sc->sc_half == 0) {
478 SCHIZO_CTRL_SET(sc, STX_CTRL_PERF,
479 (STX_CTRL_PERF_DIS << STX_CTRL_PERF_CNT1_SHIFT) |
480 (STX_CTRL_PERF_BUSCYC << STX_CTRL_PERF_CNT0_SHIFT));
481 tc = malloc(sizeof(*tc), M_DEVBUF, M_NOWAIT | M_ZERO);
482 if (tc == NULL)
483 panic("%s: could not malloc timecounter", __func__);
484 tc->tc_get_timecount = schizo_get_timecount;
485 tc->tc_counter_mask = STX_CTRL_PERF_CNT_MASK;
486 if (OF_getprop(OF_peer(0), "clock-frequency", &prop,
487 sizeof(prop)) == -1)
488 panic("%s: could not determine clock frequency",
489 __func__);
490 tc->tc_frequency = prop;
491 tc->tc_name = strdup(device_get_nameunit(dev), M_DEVBUF);
492 if (mode == SCHIZO_MODE_SCZ)
493 tc->tc_quality = SCHIZO_PERF_CNT_QLTY;
494 else
495 tc->tc_quality = -SCHIZO_PERF_CNT_QLTY;
496 tc->tc_priv = sc;
497 tc_init(tc);
498 }
499
500 /*
501 * Set up the IOMMU. Schizo, Tomatillo and XMITS all have
502 * one per PBM. Schizo and XMITS additionally have a streaming
503 * buffer, in Schizo version < 5 (i.e. revision < 2.3) it's
504 * affected by several errata though. However, except for context
505 * flushes, taking advantage of it should be okay even with those.
506 */
507 memcpy(&sc->sc_dma_methods, &iommu_dma_methods,
508 sizeof(sc->sc_dma_methods));
509 sc->sc_is.sis_sc = sc;
510 sc->sc_is.sis_is.is_flags = IOMMU_PRESERVE_PROM;
511 sc->sc_is.sis_is.is_pmaxaddr = IOMMU_MAXADDR(STX_IOMMU_BITS);
512 sc->sc_is.sis_is.is_sb[0] = sc->sc_is.sis_is.is_sb[1] = 0;
513 if (OF_getproplen(node, "no-streaming-cache") < 0)
514 sc->sc_is.sis_is.is_sb[0] = STX_PCI_STRBUF;
515
516#define TSBCASE(x) \
517 case (IOTSB_BASESZ << (x)) << (IO_PAGE_SHIFT - IOTTE_SHIFT): \
518 tsbsize = (x); \
519 break; \
520
521 i = OF_getprop(node, "virtual-dma", (void *)prop_array,
522 sizeof(prop_array));
523 if (i == -1 || i != sizeof(prop_array))
524 schizo_iommu_init(sc, 7, -1);
525 else {
526 switch (prop_array[1]) {
527 TSBCASE(1);
528 TSBCASE(2);
529 TSBCASE(3);
530 TSBCASE(4);
531 TSBCASE(5);
532 TSBCASE(6);
533 TSBCASE(7);
534 TSBCASE(8);
535 default:
536 panic("%s: unsupported DVMA size 0x%x",
537 __func__, prop_array[1]);
538 /* NOTREACHED */
539 }
540 schizo_iommu_init(sc, tsbsize, prop_array[0]);
541 }
542
543#undef TSBCASE
544
545 /* Initialize memory and I/O rmans. */
546 sc->sc_pci_io_rman.rm_type = RMAN_ARRAY;
547 sc->sc_pci_io_rman.rm_descr = "Schizo PCI I/O Ports";
548 if (rman_init(&sc->sc_pci_io_rman) != 0 ||
549 rman_manage_region(&sc->sc_pci_io_rman, 0, STX_IO_SIZE) != 0)
550 panic("%s: failed to set up I/O rman", __func__);
551 sc->sc_pci_mem_rman.rm_type = RMAN_ARRAY;
552 sc->sc_pci_mem_rman.rm_descr = "Schizo PCI Memory";
553 if (rman_init(&sc->sc_pci_mem_rman) != 0 ||
554 rman_manage_region(&sc->sc_pci_mem_rman, 0, STX_MEM_SIZE) != 0)
555 panic("%s: failed to set up memory rman", __func__);
556
557 i = OF_getprop_alloc(node, "ranges", sizeof(*range), (void **)&range);
558 /*
559 * Make sure that the expected ranges are present. The
560 * OFW_PCI_CS_MEM64 one is not currently used though.
561 */
562 if (i != STX_NRANGE)
563 panic("%s: unsupported number of ranges", __func__);
564 /*
565 * Find the addresses of the various bus spaces.
566 * There should not be multiple ones of one kind.
567 * The physical start addresses of the ranges are the configuration,
568 * memory and I/O handles.
569 */
570 for (i = 0; i < STX_NRANGE; i++) {
571 j = OFW_PCI_RANGE_CS(&range[i]);
572 if (sc->sc_pci_bh[j] != 0)
573 panic("%s: duplicate range for space %d",
574 __func__, j);
575 sc->sc_pci_bh[j] = OFW_PCI_RANGE_PHYS(&range[i]);
576 }
577 free(range, M_OFWPROP);
578
579 /* Register the softc, this is needed for paired Schizos. */
580 SLIST_INSERT_HEAD(&schizo_softcs, sc, sc_link);
581
582 /* Allocate our tags. */
583 sc->sc_pci_iot = sparc64_alloc_bus_tag(NULL, rman_get_bustag(
584 sc->sc_mem_res[STX_PCI]), PCI_IO_BUS_SPACE, NULL);
585 if (sc->sc_pci_iot == NULL)
586 panic("%s: could not allocate PCI I/O tag", __func__);
587 sc->sc_pci_cfgt = sparc64_alloc_bus_tag(NULL, rman_get_bustag(
588 sc->sc_mem_res[STX_PCI]), PCI_CONFIG_BUS_SPACE, NULL);
589 if (sc->sc_pci_cfgt == NULL)
590 panic("%s: could not allocate PCI configuration space tag",
591 __func__);
592 if (bus_dma_tag_create(bus_get_dma_tag(dev), 8, 0,
593 sc->sc_is.sis_is.is_pmaxaddr, ~0, NULL, NULL,
594 sc->sc_is.sis_is.is_pmaxaddr, 0xff, 0xffffffff, 0, NULL, NULL,
595 &sc->sc_pci_dmat) != 0)
596 panic("%s: could not create PCI DMA tag", __func__);
597 /* Customize the tag. */
598 sc->sc_pci_dmat->dt_cookie = &sc->sc_is;
599 sc->sc_pci_dmat->dt_mt = &sc->sc_dma_methods;
600
601 /*
602 * Get the bus range from the firmware.
603 * NB: Tomatillos don't support PCI bus reenumeration.
604 */
605 i = OF_getprop(node, "bus-range", (void *)prop_array,
606 sizeof(prop_array));
607 if (i == -1)
608 panic("%s: could not get bus-range", __func__);
609 if (i != sizeof(prop_array))
610 panic("%s: broken bus-range (%d)", __func__, i);
611 sc->sc_pci_secbus = prop_array[0];
612 sc->sc_pci_subbus = prop_array[1];
613 if (bootverbose)
614 device_printf(dev, "bus range %u to %u; PCI bus %d\n",
615 sc->sc_pci_secbus, sc->sc_pci_subbus, sc->sc_pci_secbus);
616
617 /* Clear any pending PCI error bits. */
618 PCIB_WRITE_CONFIG(dev, sc->sc_pci_secbus, STX_CS_DEVICE, STX_CS_FUNC,
619 PCIR_STATUS, PCIB_READ_CONFIG(dev, sc->sc_pci_secbus,
620 STX_CS_DEVICE, STX_CS_FUNC, PCIR_STATUS, 2), 2);
621 SCHIZO_PCI_SET(sc, STX_PCI_CTRL, SCHIZO_PCI_READ_8(sc, STX_PCI_CTRL));
622 SCHIZO_PCI_SET(sc, STX_PCI_AFSR, SCHIZO_PCI_READ_8(sc, STX_PCI_AFSR));
623
624 /*
625 * Establish handlers for interesting interrupts...
626 * Someone at Sun clearly was smoking crack; with Schizos PCI
627 * bus error interrupts for one PBM can be routed to the other
628 * PBM though we obviously need to use the softc of the former
629 * as the argument for the interrupt handler and the softc of
630 * the latter as the argument for the interrupt controller.
631 */
632 if (sc->sc_half == 0) {
633 if ((ino_bitmap & (1ULL << STX_PCIERR_A_INO)) != 0 ||
634 (osc != NULL && ((struct schizo_icarg *)intr_vectors[
635 INTMAP_VEC(sc->sc_ign, STX_PCIERR_A_INO)].iv_icarg)->
636 sica_sc == osc))
637 /*
638 * We are the driver for PBM A and either also
639 * registered the interrupt controller for us or
640 * the driver for PBM B has probed first and
641 * registered it for us.
642 */
643 schizo_set_intr(sc, 0, STX_PCIERR_A_INO,
644 schizo_pci_bus);
645 if ((ino_bitmap & (1ULL << STX_PCIERR_B_INO)) != 0 &&
646 osc != NULL)
647 /*
648 * We are the driver for PBM A but registered
649 * the interrupt controller for PBM B, i.e. the
650 * driver for PBM B attached first but couldn't
651 * set up a handler for PBM B.
652 */
653 schizo_set_intr(osc, 0, STX_PCIERR_B_INO,
654 schizo_pci_bus);
655 } else {
656 if ((ino_bitmap & (1ULL << STX_PCIERR_B_INO)) != 0 ||
657 (osc != NULL && ((struct schizo_icarg *)intr_vectors[
658 INTMAP_VEC(sc->sc_ign, STX_PCIERR_B_INO)].iv_icarg)->
659 sica_sc == osc))
660 /*
661 * We are the driver for PBM B and either also
662 * registered the interrupt controller for us or
663 * the driver for PBM A has probed first and
664 * registered it for us.
665 */
666 schizo_set_intr(sc, 0, STX_PCIERR_B_INO,
667 schizo_pci_bus);
668 if ((ino_bitmap & (1ULL << STX_PCIERR_A_INO)) != 0 &&
669 osc != NULL)
670 /*
671 * We are the driver for PBM B but registered
672 * the interrupt controller for PBM A, i.e. the
673 * driver for PBM A attached first but couldn't
674 * set up a handler for PBM A.
675 */
676 schizo_set_intr(osc, 0, STX_PCIERR_A_INO,
677 schizo_pci_bus);
678 }
679 if ((ino_bitmap & (1ULL << STX_UE_INO)) != 0)
680 schizo_set_intr(sc, 1, STX_UE_INO, schizo_ue);
681 if ((ino_bitmap & (1ULL << STX_CE_INO)) != 0)
682 schizo_set_intr(sc, 2, STX_CE_INO, schizo_ce);
683 if ((ino_bitmap & (1ULL << STX_BUS_INO)) != 0)
684 schizo_set_intr(sc, 3, STX_BUS_INO, schizo_host_bus);
685
686 /*
687 * According to the Schizo Errata I-13, consistent DMA flushing/
688 * syncing is FUBAR in version < 5 (i.e. revision < 2.3) bridges,
689 * so we can't use it and need to live with the consequences. With
690 * Schizo version >= 5, CDMA flushing/syncing is usable but requires
691 * the workaround described in Schizo Errata I-23. With Tomatillo
692 * and XMITS, CDMA flushing/syncing works as expected, Tomatillo
693 * version <= 4 (i.e. revision <= 2.3) bridges additionally require
694 * a block store after a write to TOMXMS_PCI_DMA_SYNC_PEND though.
695 */
696 if ((sc->sc_mode == SCHIZO_MODE_SCZ && sc->sc_ver >= 5) ||
697 sc->sc_mode == SCHIZO_MODE_TOM ||
698 sc->sc_mode == SCHIZO_MODE_XMS) {
699 if (sc->sc_mode == SCHIZO_MODE_SCZ) {
700 sc->sc_dma_methods.dm_dmamap_sync =
701 schizo_dmamap_sync;
702 sc->sc_cdma_state = SCHIZO_CDMA_STATE_IDLE;
703 /*
704 * Some firmware versions include the CDMA interrupt
705 * at RID 4 but most don't. With the latter we add
706 * it ourselves at the spare RID 5.
707 */
708 i = INTINO(bus_get_resource_start(dev, SYS_RES_IRQ,
709 4));
710 if (i == STX_CDMA_A_INO || i == STX_CDMA_B_INO) {
|
709 (void)schizo_get_intrmap(sc, i, NULL,
710 &sc->sc_cdma_clr);
|
711 sc->sc_cdma_vec = INTMAP_VEC(sc->sc_ign, i);
712 (void)schizo_get_intrmap(sc, i,
713 &sc->sc_cdma_map, &sc->sc_cdma_clr); |
714 schizo_set_intr(sc, 4, i, schizo_cdma);
715 } else {
716 i = STX_CDMA_A_INO + sc->sc_half;
|
| 717 sc->sc_cdma_vec = INTMAP_VEC(sc->sc_ign, i); |
718 if (bus_set_resource(dev, SYS_RES_IRQ, 5,
|
715 INTMAP_VEC(sc->sc_ign, i), 1) != 0)
|
| 719 sc->sc_cdma_vec, 1) != 0) |
720 panic("%s: failed to add CDMA "
721 "interrupt", __func__);
722 j = schizo_intr_register(sc, i);
723 if (j != 0)
724 panic("%s: could not register "
725 "interrupt controller for CDMA "
726 "(%d)", __func__, j);
|
723 (void)schizo_get_intrmap(sc, i, NULL,
724 &sc->sc_cdma_clr);
|
727 (void)schizo_get_intrmap(sc, i,
728 &sc->sc_cdma_map, &sc->sc_cdma_clr); |
729 schizo_set_intr(sc, 5, i, schizo_cdma);
730 }
731 } else {
732 if (sc->sc_mode == SCHIZO_MODE_XMS)
733 mtx_init(&sc->sc_sync_mtx, "pcib_sync_mtx",
734 NULL, MTX_SPIN);
735 sc->sc_sync_val = 1ULL << (STX_PCIERR_A_INO +
736 sc->sc_half);
737 sc->sc_dma_methods.dm_dmamap_sync =
738 ichip_dmamap_sync;
739 }
740 if (sc->sc_mode == SCHIZO_MODE_TOM && sc->sc_ver <= 4)
741 sc->sc_flags |= SCHIZO_FLAGS_BSWAR;
742 }
743
744 /*
745 * Set the latency timer register as this isn't always done by the
746 * firmware.
747 */
748 PCIB_WRITE_CONFIG(dev, sc->sc_pci_secbus, STX_CS_DEVICE, STX_CS_FUNC,
749 PCIR_LATTIMER, OFW_PCI_LATENCY, 1);
750
751 ofw_bus_setup_iinfo(node, &sc->sc_pci_iinfo, sizeof(ofw_pci_intr_t));
752
753#define SCHIZO_SYSCTL_ADD_UINT(name, arg, desc) \
754 SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev), \
755 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, \
756 (name), CTLFLAG_RD, (arg), 0, (desc))
757
758 SCHIZO_SYSCTL_ADD_UINT("dma_ce", &sc->sc_stats_dma_ce,
759 "DMA correctable errors");
760 SCHIZO_SYSCTL_ADD_UINT("pci_non_fatal", &sc->sc_stats_pci_non_fatal,
761 "PCI bus non-fatal errors");
762
763#undef SCHIZO_SYSCTL_ADD_UINT
764
765 device_add_child(dev, "pci", -1);
766 return (bus_generic_attach(dev));
767}
768
769static void
770schizo_set_intr(struct schizo_softc *sc, u_int index, u_int ino,
771 driver_filter_t handler)
772{
773 u_long vec;
774 int rid;
775
776 rid = index;
777 sc->sc_irq_res[index] = bus_alloc_resource_any(sc->sc_dev,
778 SYS_RES_IRQ, &rid, RF_ACTIVE);
779 if (sc->sc_irq_res[index] == NULL ||
780 INTINO(vec = rman_get_start(sc->sc_irq_res[index])) != ino ||
781 INTIGN(vec) != sc->sc_ign ||
782 intr_vectors[vec].iv_ic != &schizo_ic ||
783 bus_setup_intr(sc->sc_dev, sc->sc_irq_res[index],
784 INTR_TYPE_MISC | INTR_BRIDGE, handler, NULL, sc,
785 &sc->sc_ihand[index]) != 0)
786 panic("%s: failed to set up interrupt %d", __func__, index);
787}
788
789static int
790schizo_intr_register(struct schizo_softc *sc, u_int ino)
791{
792 struct schizo_icarg *sica;
793 bus_addr_t intrclr, intrmap;
794 int error;
795
796 if (schizo_get_intrmap(sc, ino, &intrmap, &intrclr) == 0)
797 return (ENXIO);
798 sica = malloc(sizeof(*sica), M_DEVBUF, M_NOWAIT);
799 if (sica == NULL)
800 return (ENOMEM);
801 sica->sica_sc = sc;
802 sica->sica_map = intrmap;
803 sica->sica_clr = intrclr;
804#ifdef SCHIZO_DEBUG
805 device_printf(sc->sc_dev, "intr map (INO %d) %#lx: %#lx, clr: %#lx\n",
806 ino, (u_long)intrmap, (u_long)SCHIZO_PCI_READ_8(sc, intrmap),
807 (u_long)intrclr);
808#endif
809 error = (intr_controller_register(INTMAP_VEC(sc->sc_ign, ino),
810 &schizo_ic, sica));
811 if (error != 0)
812 free(sica, M_DEVBUF);
813 return (error);
814}
815
816static int
817schizo_get_intrmap(struct schizo_softc *sc, u_int ino,
818 bus_addr_t *intrmapptr, bus_addr_t *intrclrptr)
819{
820 bus_addr_t intrclr, intrmap;
821 uint64_t mr;
822
823 /*
824 * XXX we only look for INOs rather than INRs since the firmware
825 * may not provide the IGN and the IGN is constant for all devices
826 * on that PCI controller.
827 */
828
829 if (ino > STX_MAX_INO) {
830 device_printf(sc->sc_dev, "out of range INO %d requested\n",
831 ino);
832 return (0);
833 }
834
835 intrmap = STX_PCI_IMAP_BASE + (ino << 3);
836 intrclr = STX_PCI_ICLR_BASE + (ino << 3);
837 mr = SCHIZO_PCI_READ_8(sc, intrmap);
838 if (INTINO(mr) != ino) {
839 device_printf(sc->sc_dev,
840 "interrupt map entry does not match INO (%d != %d)\n",
841 (int)INTINO(mr), ino);
842 return (0);
843 }
844
845 if (intrmapptr != NULL)
846 *intrmapptr = intrmap;
847 if (intrclrptr != NULL)
848 *intrclrptr = intrclr;
849 return (1);
850}
851
852/*
853 * Interrupt handlers
854 */
855static int
856schizo_pci_bus(void *arg)
857{
858 struct schizo_softc *sc = arg;
859 uint64_t afar, afsr, csr, iommu, xstat;
860 uint32_t status;
861 u_int fatal;
862
863 fatal = 0;
864
865 mtx_lock_spin(sc->sc_mtx);
866
867 afar = SCHIZO_PCI_READ_8(sc, STX_PCI_AFAR);
868 afsr = SCHIZO_PCI_READ_8(sc, STX_PCI_AFSR);
869 csr = SCHIZO_PCI_READ_8(sc, STX_PCI_CTRL);
870 iommu = SCHIZO_PCI_READ_8(sc, STX_PCI_IOMMU);
871 if ((sc->sc_flags & SCHIZO_FLAGS_XMODE) != 0)
872 xstat = SCHIZO_PCI_READ_8(sc, XMS_PCI_X_ERR_STAT);
873 else
874 xstat = 0;
875 status = PCIB_READ_CONFIG(sc->sc_dev, sc->sc_pci_secbus,
876 STX_CS_DEVICE, STX_CS_FUNC, PCIR_STATUS, 2);
877
878 /*
879 * IOMMU errors are only fatal on Tomatillo and there also only if
880 * target abort was not signaled.
881 */
882 if ((csr & STX_PCI_CTRL_MMU_ERR) != 0 &&
883 (iommu & TOM_PCI_IOMMU_ERR) != 0 &&
884 ((status & PCIM_STATUS_STABORT) == 0 ||
885 ((iommu & TOM_PCI_IOMMU_ERRMASK) != TOM_PCI_IOMMU_INVALID_ERR &&
886 (iommu & TOM_PCI_IOMMU_ERR_ILLTSBTBW) == 0 &&
887 (iommu & TOM_PCI_IOMMU_ERR_BAD_VA) == 0)))
888 fatal = 1;
889 else if ((status & PCIM_STATUS_STABORT) != 0)
890 fatal = 1;
891 if ((status & (PCIM_STATUS_PERR | PCIM_STATUS_SERR |
892 PCIM_STATUS_RMABORT | PCIM_STATUS_RTABORT |
893 PCIM_STATUS_MDPERR)) != 0 ||
894 (csr & (SCZ_PCI_CTRL_BUS_UNUS | TOM_PCI_CTRL_DTO_ERR |
895 STX_PCI_CTRL_TTO_ERR | STX_PCI_CTRL_RTRY_ERR |
896 SCZ_PCI_CTRL_SBH_ERR | STX_PCI_CTRL_SERR)) != 0 ||
897 (afsr & (STX_PCI_AFSR_P_MA | STX_PCI_AFSR_P_TA |
898 STX_PCI_AFSR_P_RTRY | STX_PCI_AFSR_P_PERR | STX_PCI_AFSR_P_TTO |
899 STX_PCI_AFSR_P_UNUS)) != 0)
900 fatal = 1;
901 if (xstat & (XMS_PCI_X_ERR_STAT_P_SC_DSCRD |
902 XMS_PCI_X_ERR_STAT_P_SC_TTO | XMS_PCI_X_ERR_STAT_P_SDSTAT |
903 XMS_PCI_X_ERR_STAT_P_SMMU | XMS_PCI_X_ERR_STAT_P_CDSTAT |
904 XMS_PCI_X_ERR_STAT_P_CMMU | XMS_PCI_X_ERR_STAT_PERR_RCV))
905 fatal = 1;
906 if (fatal == 0)
907 sc->sc_stats_pci_non_fatal++;
908
909 device_printf(sc->sc_dev, "PCI bus %c error AFAR %#llx AFSR %#llx "
910 "PCI CSR %#llx IOMMU %#llx PCI-X %#llx STATUS %#x\n",
911 'A' + sc->sc_half, (unsigned long long)afar,
912 (unsigned long long)afsr, (unsigned long long)csr,
913 (unsigned long long)iommu, (unsigned long long)xstat, status);
914
915 /* Clear the error bits that we caught. */
916 PCIB_WRITE_CONFIG(sc->sc_dev, sc->sc_pci_secbus, STX_CS_DEVICE,
917 STX_CS_FUNC, PCIR_STATUS, status, 2);
918 SCHIZO_PCI_WRITE_8(sc, STX_PCI_CTRL, csr);
919 SCHIZO_PCI_WRITE_8(sc, STX_PCI_AFSR, afsr);
920 SCHIZO_PCI_WRITE_8(sc, STX_PCI_IOMMU, iommu);
921 if ((sc->sc_flags & SCHIZO_FLAGS_XMODE) != 0)
922 SCHIZO_PCI_WRITE_8(sc, XMS_PCI_X_ERR_STAT, xstat);
923
924 mtx_unlock_spin(sc->sc_mtx);
925
926 if (fatal != 0)
927 panic("%s: fatal PCI bus error",
928 device_get_nameunit(sc->sc_dev));
929 return (FILTER_HANDLED);
930}
931
932static int
933schizo_ue(void *arg)
934{
935 struct schizo_softc *sc = arg;
936 uint64_t afar, afsr;
937 int i;
938
939 afar = SCHIZO_CTRL_READ_8(sc, STX_CTRL_UE_AFAR);
940 for (i = 0; i < 1000; i++)
941 if (((afsr = SCHIZO_CTRL_READ_8(sc, STX_CTRL_UE_AFSR)) &
942 STX_CTRL_CE_AFSR_ERRPNDG) == 0)
943 break;
944 panic("%s: uncorrectable DMA error AFAR %#llx AFSR %#llx",
945 device_get_nameunit(sc->sc_dev), (unsigned long long)afar,
946 (unsigned long long)afsr);
947 return (FILTER_HANDLED);
948}
949
950static int
951schizo_ce(void *arg)
952{
953 struct schizo_softc *sc = arg;
954 uint64_t afar, afsr;
955 int i;
956
957 mtx_lock_spin(sc->sc_mtx);
958
959 afar = SCHIZO_CTRL_READ_8(sc, STX_CTRL_CE_AFAR);
960 for (i = 0; i < 1000; i++)
961 if (((afsr = SCHIZO_CTRL_READ_8(sc, STX_CTRL_UE_AFSR)) &
962 STX_CTRL_CE_AFSR_ERRPNDG) == 0)
963 break;
964 sc->sc_stats_dma_ce++;
965 device_printf(sc->sc_dev,
966 "correctable DMA error AFAR %#llx AFSR %#llx\n",
967 (unsigned long long)afar, (unsigned long long)afsr);
968
969 /* Clear the error bits that we caught. */
970 SCHIZO_CTRL_WRITE_8(sc, STX_CTRL_UE_AFSR, afsr);
971
972 mtx_unlock_spin(sc->sc_mtx);
973
974 return (FILTER_HANDLED);
975}
976
977static int
978schizo_host_bus(void *arg)
979{
980 struct schizo_softc *sc = arg;
981 uint64_t errlog;
982
983 errlog = SCHIZO_CTRL_READ_8(sc, STX_CTRL_BUS_ERRLOG);
984 panic("%s: %s error %#llx", device_get_nameunit(sc->sc_dev),
985 sc->sc_mode == SCHIZO_MODE_TOM ? "JBus" : "Safari",
986 (unsigned long long)errlog);
987 return (FILTER_HANDLED);
988}
989
990static int
991schizo_cdma(void *arg)
992{
993 struct schizo_softc *sc = arg;
994
|
991 atomic_store_rel_32(&sc->sc_cdma_state, SCHIZO_CDMA_STATE_RECEIVED);
|
995 atomic_cmpset_32(&sc->sc_cdma_state, SCHIZO_CDMA_STATE_PENDING,
996 SCHIZO_CDMA_STATE_RECEIVED); |
997 return (FILTER_HANDLED);
998}
999
1000static void
1001schizo_iommu_init(struct schizo_softc *sc, int tsbsize, uint32_t dvmabase)
1002{
1003
1004 /* Punch in our copies. */
1005 sc->sc_is.sis_is.is_bustag = rman_get_bustag(sc->sc_mem_res[STX_PCI]);
1006 sc->sc_is.sis_is.is_bushandle =
1007 rman_get_bushandle(sc->sc_mem_res[STX_PCI]);
1008 sc->sc_is.sis_is.is_iommu = STX_PCI_IOMMU;
1009 sc->sc_is.sis_is.is_dtag = STX_PCI_IOMMU_TLB_TAG_DIAG;
1010 sc->sc_is.sis_is.is_ddram = STX_PCI_IOMMU_TLB_DATA_DIAG;
1011 sc->sc_is.sis_is.is_dqueue = STX_PCI_IOMMU_QUEUE_DIAG;
1012 sc->sc_is.sis_is.is_dva = STX_PCI_IOMMU_SVADIAG;
1013 sc->sc_is.sis_is.is_dtcmp = STX_PCI_IOMMU_TLB_CMP_DIAG;
1014
1015 iommu_init(device_get_nameunit(sc->sc_dev),
1016 (struct iommu_state *)&sc->sc_is, tsbsize, dvmabase, 0);
1017}
1018
1019static int
1020schizo_maxslots(device_t dev)
1021{
1022 struct schizo_softc *sc;
1023
1024 sc = device_get_softc(dev);
1025 if (sc->sc_mode == SCHIZO_MODE_SCZ)
1026 return (sc->sc_half == 0 ? 4 : 6);
1027
1028 /* XXX: is this correct? */
1029 return (PCI_SLOTMAX);
1030}
1031
1032static uint32_t
1033schizo_read_config(device_t dev, u_int bus, u_int slot, u_int func, u_int reg,
1034 int width)
1035{
1036 struct schizo_softc *sc;
1037 bus_space_handle_t bh;
1038 u_long offset = 0;
1039 uint32_t r, wrd;
1040 int i;
1041 uint16_t shrt;
1042 uint8_t byte;
1043
1044 sc = device_get_softc(dev);
1045 if (bus < sc->sc_pci_secbus || bus > sc->sc_pci_subbus ||
1046 slot > PCI_SLOTMAX || func > PCI_FUNCMAX || reg > PCI_REGMAX)
1047 return (-1);
1048
1049 /*
1050 * The Schizo bridges contain a dupe of their header at 0x80.
1051 */
1052 if (sc->sc_mode == SCHIZO_MODE_SCZ && bus == sc->sc_pci_secbus &&
1053 slot == STX_CS_DEVICE && func == STX_CS_FUNC &&
1054 reg + width > 0x80)
1055 return (0);
1056
1057 offset = STX_CONF_OFF(bus, slot, func, reg);
1058 bh = sc->sc_pci_bh[OFW_PCI_CS_CONFIG];
1059 switch (width) {
1060 case 1:
1061 i = bus_space_peek_1(sc->sc_pci_cfgt, bh, offset, &byte);
1062 r = byte;
1063 break;
1064 case 2:
1065 i = bus_space_peek_2(sc->sc_pci_cfgt, bh, offset, &shrt);
1066 r = shrt;
1067 break;
1068 case 4:
1069 i = bus_space_peek_4(sc->sc_pci_cfgt, bh, offset, &wrd);
1070 r = wrd;
1071 break;
1072 default:
1073 panic("%s: bad width", __func__);
1074 /* NOTREACHED */
1075 }
1076
1077 if (i) {
1078#ifdef SCHIZO_DEBUG
1079 printf("%s: read data error reading: %d.%d.%d: 0x%x\n",
1080 __func__, bus, slot, func, reg);
1081#endif
1082 r = -1;
1083 }
1084 return (r);
1085}
1086
1087static void
1088schizo_write_config(device_t dev, u_int bus, u_int slot, u_int func,
1089 u_int reg, uint32_t val, int width)
1090{
1091 struct schizo_softc *sc;
1092 bus_space_handle_t bh;
1093 u_long offset = 0;
1094
1095 sc = device_get_softc(dev);
1096 if (bus < sc->sc_pci_secbus || bus > sc->sc_pci_subbus ||
1097 slot > PCI_SLOTMAX || func > PCI_FUNCMAX || reg > PCI_REGMAX)
1098 return;
1099
1100 offset = STX_CONF_OFF(bus, slot, func, reg);
1101 bh = sc->sc_pci_bh[OFW_PCI_CS_CONFIG];
1102 switch (width) {
1103 case 1:
1104 bus_space_write_1(sc->sc_pci_cfgt, bh, offset, val);
1105 break;
1106 case 2:
1107 bus_space_write_2(sc->sc_pci_cfgt, bh, offset, val);
1108 break;
1109 case 4:
1110 bus_space_write_4(sc->sc_pci_cfgt, bh, offset, val);
1111 break;
1112 default:
1113 panic("%s: bad width", __func__);
1114 /* NOTREACHED */
1115 }
1116}
1117
1118static int
1119schizo_route_interrupt(device_t bridge, device_t dev, int pin)
1120{
1121 struct schizo_softc *sc;
1122 struct ofw_pci_register reg;
1123 ofw_pci_intr_t pintr, mintr;
1124 uint8_t maskbuf[sizeof(reg) + sizeof(pintr)];
1125
1126 sc = device_get_softc(bridge);
1127 pintr = pin;
1128 if (ofw_bus_lookup_imap(ofw_bus_get_node(dev), &sc->sc_pci_iinfo,
1129 ®, sizeof(reg), &pintr, sizeof(pintr), &mintr, sizeof(mintr),
1130 NULL, maskbuf))
1131 return (mintr);
1132
1133 device_printf(bridge, "could not route pin %d for device %d.%d\n",
1134 pin, pci_get_slot(dev), pci_get_function(dev));
1135 return (PCI_INVALID_IRQ);
1136}
1137
1138static int
1139schizo_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
1140{
1141 struct schizo_softc *sc;
1142
1143 sc = device_get_softc(dev);
1144 switch (which) {
1145 case PCIB_IVAR_DOMAIN:
1146 *result = device_get_unit(dev);
1147 return (0);
1148 case PCIB_IVAR_BUS:
1149 *result = sc->sc_pci_secbus;
1150 return (0);
1151 }
1152 return (ENOENT);
1153}
1154
1155static void
1156schizo_dmamap_sync(bus_dma_tag_t dt, bus_dmamap_t map, bus_dmasync_op_t op)
1157{
1158 struct timeval cur, end;
1159 struct schizo_iommu_state *sis = dt->dt_cookie;
1160 struct schizo_softc *sc = sis->sis_sc;
|
1156 int res;
|
1161 int i, res;
1162#ifdef INVARIANTS
1163 register_t pil;
1164#endif |
1165
1166 if ((map->dm_flags & DMF_STREAMED) != 0) {
1167 iommu_dma_methods.dm_dmamap_sync(dt, map, op);
1168 return;
1169 }
1170
1171 if ((map->dm_flags & DMF_LOADED) == 0)
1172 return;
1173
1174 if ((op & BUS_DMASYNC_POSTREAD) != 0) {
1175 /*
1176 * Note that in order to allow this function to be called from
1177 * filters we would need to use a spin mutex for serialization
1178 * but given that these disable interrupts we have to emulate
1179 * one.
1180 */
|
1181 critical_enter();
1182 KASSERT((rdpr(pstate) & PSTATE_IE) != 0,
1183 ("%s: interrupts disabled", __func__));
1184 KASSERT((pil = rdpr(pil)) <= PIL_BRIDGE,
1185 ("%s: PIL too low (%ld)", __func__, pil)); |
1186 for (; atomic_cmpset_acq_32(&sc->sc_cdma_state,
1187 SCHIZO_CDMA_STATE_IDLE, SCHIZO_CDMA_STATE_PENDING) == 0;)
1188 ;
|
1176 SCHIZO_PCI_WRITE_8(sc, sc->sc_cdma_clr, INTCLR_RECEIVED);
1177 microuptime(&cur);
1178 end.tv_sec = 15;
1179 end.tv_usec = 0;
1180 timevaladd(&end, &cur);
1181 for (; (res = atomic_cmpset_rel_32(&sc->sc_cdma_state,
1182 SCHIZO_CDMA_STATE_RECEIVED, SCHIZO_CDMA_STATE_IDLE)) ==
1183 0 && timevalcmp(&cur, &end, <=);)
|
1189 SCHIZO_PCI_WRITE_8(sc, sc->sc_cdma_map,
1190 INTMAP_ENABLE(sc->sc_cdma_vec, PCPU_GET(mid)));
1191 for (i = 0; i < SCHIZO_CDMA_TRIES; i++) {
1192 if (i > 0)
1193 printf("%s: try %d\n", __func__, i);
1194 SCHIZO_PCI_WRITE_8(sc, sc->sc_cdma_clr,
1195 INTCLR_RECEIVED); |
1196 microuptime(&cur);
|
1197 end.tv_sec = SCHIZO_CDMA_TIMEOUT;
1198 end.tv_usec = 0;
1199 timevaladd(&end, &cur);
1200 for (; (res = atomic_cmpset_rel_32(&sc->sc_cdma_state,
1201 SCHIZO_CDMA_STATE_RECEIVED,
1202 SCHIZO_CDMA_STATE_IDLE)) == 0 &&
1203 timevalcmp(&cur, &end, <=);)
1204 microuptime(&cur);
1205 if (res != 0)
1206 break;
1207 } |
1208 if (res == 0)
1209 panic("%s: DMA does not sync", __func__);
|
| 1210 critical_exit(); |
1211 }
1212
1213 if ((op & BUS_DMASYNC_PREWRITE) != 0)
1214 membar(Sync);
1215}
1216
1217#define VIS_BLOCKSIZE 64
1218
1219static void
1220ichip_dmamap_sync(bus_dma_tag_t dt, bus_dmamap_t map, bus_dmasync_op_t op)
1221{
1222 static u_char buf[VIS_BLOCKSIZE] __aligned(VIS_BLOCKSIZE);
1223 struct timeval cur, end;
1224 struct schizo_iommu_state *sis = dt->dt_cookie;
1225 struct schizo_softc *sc = sis->sis_sc;
1226 register_t reg, s;
1227
1228 if ((map->dm_flags & DMF_STREAMED) != 0) {
1229 iommu_dma_methods.dm_dmamap_sync(dt, map, op);
1230 return;
1231 }
1232
1233 if ((map->dm_flags & DMF_LOADED) == 0)
1234 return;
1235
1236 if ((op & BUS_DMASYNC_POSTREAD) != 0) {
1237 if (sc->sc_mode == SCHIZO_MODE_XMS)
1238 mtx_lock_spin(&sc->sc_sync_mtx);
1239 SCHIZO_PCI_WRITE_8(sc, TOMXMS_PCI_DMA_SYNC_PEND,
1240 sc->sc_sync_val);
1241 microuptime(&cur);
1242 end.tv_sec = 1;
1243 end.tv_usec = 0;
1244 timevaladd(&end, &cur);
1245 for (; ((reg = SCHIZO_PCI_READ_8(sc,
1246 TOMXMS_PCI_DMA_SYNC_PEND)) & sc->sc_sync_val) != 0 &&
1247 timevalcmp(&cur, &end, <=);)
1248 microuptime(&cur);
1249 if ((reg & sc->sc_sync_val) != 0)
1250 panic("%s: DMA does not sync", __func__);
1251 if (sc->sc_mode == SCHIZO_MODE_XMS)
1252 mtx_unlock_spin(&sc->sc_sync_mtx);
1253 else if ((sc->sc_flags & SCHIZO_FLAGS_BSWAR) != 0) {
1254 s = intr_disable();
1255 reg = rd(fprs);
1256 wr(fprs, reg | FPRS_FEF, 0);
1257 __asm __volatile("stda %%f0, [%0] %1"
1258 : : "r" (buf), "n" (ASI_BLK_COMMIT_S));
1259 membar(Sync);
1260 wr(fprs, reg, 0);
1261 intr_restore(s);
1262 return;
1263 }
1264 }
1265
1266 if ((op & BUS_DMASYNC_PREWRITE) != 0)
1267 membar(Sync);
1268}
1269
1270static void
1271schizo_intr_enable(void *arg)
1272{
1273 struct intr_vector *iv = arg;
1274 struct schizo_icarg *sica = iv->iv_icarg;
1275
1276 SCHIZO_PCI_WRITE_8(sica->sica_sc, sica->sica_map,
1277 INTMAP_ENABLE(iv->iv_vec, iv->iv_mid));
1278}
1279
1280static void
1281schizo_intr_disable(void *arg)
1282{
1283 struct intr_vector *iv = arg;
1284 struct schizo_icarg *sica = iv->iv_icarg;
1285
1286 SCHIZO_PCI_WRITE_8(sica->sica_sc, sica->sica_map, iv->iv_vec);
1287}
1288
1289static void
1290schizo_intr_assign(void *arg)
1291{
1292 struct intr_vector *iv = arg;
1293 struct schizo_icarg *sica = iv->iv_icarg;
1294
1295 SCHIZO_PCI_WRITE_8(sica->sica_sc, sica->sica_map, INTMAP_TID(
1296 SCHIZO_PCI_READ_8(sica->sica_sc, sica->sica_map), iv->iv_mid));
1297}
1298
1299static void
1300schizo_intr_clear(void *arg)
1301{
1302 struct intr_vector *iv = arg;
1303 struct schizo_icarg *sica = iv->iv_icarg;
1304
1305 SCHIZO_PCI_WRITE_8(sica->sica_sc, sica->sica_clr, INTCLR_IDLE);
1306}
1307
1308static int
1309schizo_setup_intr(device_t dev, device_t child, struct resource *ires,
1310 int flags, driver_filter_t *filt, driver_intr_t *intr, void *arg,
1311 void **cookiep)
1312{
1313 struct schizo_softc *sc;
1314 u_long vec;
1315 int error;
1316
1317 sc = device_get_softc(dev);
1318 /*
1319 * Make sure the vector is fully specified.
1320 */
1321 vec = rman_get_start(ires);
1322 if (INTIGN(vec) != sc->sc_ign) {
1323 device_printf(dev, "invalid interrupt vector 0x%lx\n", vec);
1324 return (EINVAL);
1325 }
1326
1327 if (intr_vectors[vec].iv_ic == &schizo_ic) {
1328 /*
1329 * Ensure we use the right softc in case the interrupt
1330 * is routed to our companion PBM for some odd reason.
1331 */
1332 sc = ((struct schizo_icarg *)intr_vectors[vec].iv_icarg)->
1333 sica_sc;
1334 } else if (intr_vectors[vec].iv_ic == NULL) {
1335 /*
1336 * Work around broken firmware which misses entries in
1337 * the ino-bitmap.
1338 */
1339 error = schizo_intr_register(sc, INTINO(vec));
1340 if (error != 0) {
1341 device_printf(dev, "could not register interrupt "
1342 "controller for vector 0x%lx (%d)\n", vec, error);
1343 return (error);
1344 }
1345 if (bootverbose)
1346 device_printf(dev, "belatedly registered as "
1347 "interrupt controller for vector 0x%lx\n", vec);
1348 } else {
1349 device_printf(dev,
1350 "invalid interrupt controller for vector 0x%lx\n", vec);
1351 return (EINVAL);
1352 }
1353 return (bus_generic_setup_intr(dev, child, ires, flags, filt, intr,
1354 arg, cookiep));
1355}
1356
1357static struct resource *
1358schizo_alloc_resource(device_t bus, device_t child, int type, int *rid,
1359 u_long start, u_long end, u_long count, u_int flags)
1360{
1361 struct schizo_softc *sc;
1362 struct resource *rv;
1363 struct rman *rm;
1364
1365 sc = device_get_softc(bus);
1366 switch (type) {
1367 case SYS_RES_IRQ:
1368 /*
1369 * XXX: Don't accept blank ranges for now, only single
1370 * interrupts. The other case should not happen with
1371 * the MI PCI code...
1372 * XXX: This may return a resource that is out of the
1373 * range that was specified. Is this correct...?
1374 */
1375 if (start != end)
1376 panic("%s: XXX: interrupt range", __func__);
1377 start = end = INTMAP_VEC(sc->sc_ign, end);
1378 return (bus_generic_alloc_resource(bus, child, type, rid,
|
1355 start, end, count, flags));
|
| 1379 start, end, count, flags)); |
1380 case SYS_RES_MEMORY:
1381 rm = &sc->sc_pci_mem_rman;
1382 break;
1383 case SYS_RES_IOPORT:
1384 rm = &sc->sc_pci_io_rman;
1385 break;
1386 default:
1387 return (NULL);
1388 }
1389
1390 rv = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE,
1391 child);
1392 if (rv == NULL)
1393 return (NULL);
1394 rman_set_rid(rv, *rid);
1395
1396 if ((flags & RF_ACTIVE) != 0 && bus_activate_resource(child, type,
1397 *rid, rv) != 0) {
1398 rman_release_resource(rv);
1399 return (NULL);
1400 }
1401 return (rv);
1402}
1403
1404static int
1405schizo_activate_resource(device_t bus, device_t child, int type, int rid,
1406 struct resource *r)
1407{
1408 struct schizo_softc *sc;
1409 struct bus_space_tag *tag;
1410
1411 sc = device_get_softc(bus);
1412 switch (type) {
1413 case SYS_RES_IRQ:
1414 return (bus_generic_activate_resource(bus, child, type, rid,
1415 r));
1416 case SYS_RES_MEMORY:
1417 tag = sparc64_alloc_bus_tag(r, rman_get_bustag(
1418 sc->sc_mem_res[STX_PCI]), PCI_MEMORY_BUS_SPACE, NULL);
1419 if (tag == NULL)
1420 return (ENOMEM);
1421 rman_set_bustag(r, tag);
1422 rman_set_bushandle(r, sc->sc_pci_bh[OFW_PCI_CS_MEM32] +
1423 rman_get_start(r));
1424 break;
1425 case SYS_RES_IOPORT:
1426 rman_set_bustag(r, sc->sc_pci_iot);
1427 rman_set_bushandle(r, sc->sc_pci_bh[OFW_PCI_CS_IO] +
1428 rman_get_start(r));
1429 break;
1430 }
1431 return (rman_activate_resource(r));
1432}
1433
1434static int
1435schizo_adjust_resource(device_t bus, device_t child, int type,
1436 struct resource *r, u_long start, u_long end)
1437{
1438 struct schizo_softc *sc;
1439 struct rman *rm;
1440
1441 sc = device_get_softc(bus);
1442 switch (type) {
1443 case SYS_RES_IRQ:
1444 return (bus_generic_adjust_resource(bus, child, type, r,
1445 start, end));
1446 case SYS_RES_MEMORY:
1447 rm = &sc->sc_pci_mem_rman;
1448 break;
1449 case SYS_RES_IOPORT:
1450 rm = &sc->sc_pci_io_rman;
1451 break;
1452 default:
1453 return (EINVAL);
1454 }
1455 if (rman_is_region_manager(r, rm) == 0)
1456 return (EINVAL);
1457 return (rman_adjust_resource(r, start, end));
1458}
1459
1460static bus_dma_tag_t
1461schizo_get_dma_tag(device_t bus, device_t child __unused)
1462{
1463 struct schizo_softc *sc;
1464
1465 sc = device_get_softc(bus);
1466 return (sc->sc_pci_dmat);
1467}
1468
1469static phandle_t
1470schizo_get_node(device_t bus, device_t child __unused)
1471{
1472 struct schizo_softc *sc;
1473
1474 sc = device_get_softc(bus);
1475 /* We only have one child, the PCI bus, which needs our own node. */
1476 return (sc->sc_node);
1477}
1478
1479static void
1480schizo_setup_device(device_t bus, device_t child)
1481{
1482 struct schizo_softc *sc;
1483 uint64_t reg;
1484 int capreg;
1485
1486 sc = device_get_softc(bus);
1487 /*
1488 * Disable bus parking in order to work around a bus hang caused by
1489 * Casinni/Skyhawk combinations.
1490 */
1491 if (OF_getproplen(ofw_bus_get_node(child), "pci-req-removal") >= 0)
1492 SCHIZO_PCI_SET(sc, STX_PCI_CTRL, SCHIZO_PCI_READ_8(sc,
1493 STX_PCI_CTRL) & ~STX_PCI_CTRL_ARB_PARK);
1494
1495 if (sc->sc_mode == SCHIZO_MODE_XMS) {
1496 /* XMITS NCPQ WAR: set outstanding split transactions to 1. */
1497 if ((sc->sc_flags & SCHIZO_FLAGS_XMODE) != 0 &&
1498 (pci_read_config(child, PCIR_HDRTYPE, 1) &
1499 PCIM_HDRTYPE) != PCIM_HDRTYPE_BRIDGE &&
1500 pci_find_cap(child, PCIY_PCIX, &capreg) == 0)
1501 pci_write_config(child, capreg + PCIXR_COMMAND,
1502 pci_read_config(child, capreg + PCIXR_COMMAND,
1503 2) & 0x7c, 2);
1504 /* XMITS 3.x WAR: set BUGCNTL iff value is unexpected. */
1505 if (sc->sc_mrev >= 4) {
1506 reg = ((sc->sc_flags & SCHIZO_FLAGS_XMODE) != 0 ?
1507 0xa0UL : 0xffUL) << XMS_PCI_X_DIAG_BUGCNTL_SHIFT;
1508 if ((SCHIZO_PCI_READ_8(sc, XMS_PCI_X_DIAG) &
1509 XMS_PCI_X_DIAG_BUGCNTL_MASK) != reg)
1510 SCHIZO_PCI_SET(sc, XMS_PCI_X_DIAG, reg);
1511 }
1512 }
1513}
1514
1515static u_int
1516schizo_get_timecount(struct timecounter *tc)
1517{
1518 struct schizo_softc *sc;
1519
1520 sc = tc->tc_priv;
1521 return ((SCHIZO_CTRL_READ_8(sc, STX_CTRL_PERF_CNT) &
1522 (STX_CTRL_PERF_CNT_MASK << STX_CTRL_PERF_CNT_CNT0_SHIFT)) >>
1523 STX_CTRL_PERF_CNT_CNT0_SHIFT);
1524}
|