1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #include <sys/param.h>
28 #include <sys/systm.h>
29 #include <sys/sysmacros.h>
30 #include <sys/sunddi.h>
31 #include <sys/esunddi.h>
32
33 #include <sys/platform_module.h>
34 #include <sys/errno.h>
35 #include <sys/cpu_sgnblk_defs.h>
36 #include <sys/rmc_comm_dp.h>
37 #include <sys/rmc_comm_drvintf.h>
38 #include <sys/modctl.h>
39 #include <sys/lgrp.h>
40 #include <sys/memnode.h>
41 #include <sys/promif.h>
42
43 /* Anything related to shared i2c access applies to Seattle only */
44 #define SHARED_MI2CV_PATH "/i2c@1f,530000"
45 static dev_info_t *shared_mi2cv_dip;
46 static kmutex_t mi2cv_mutex;
47
48 int (*p2get_mem_unum)(int, uint64_t, char *, int, int *);
49 static void cpu_sgn_update(ushort_t, uchar_t, uchar_t, int);
50 int (*rmc_req_now)(rmc_comm_msg_t *, uint8_t) = NULL;
51
52 void
startup_platform(void)53 startup_platform(void)
54 {
55 mutex_init(&mi2cv_mutex, NULL, MUTEX_ADAPTIVE, NULL);
56 }
57
58 int
set_platform_tsb_spares()59 set_platform_tsb_spares()
60 {
61 return (0);
62 }
63
64 void
set_platform_defaults(void)65 set_platform_defaults(void)
66 {
67 extern char *tod_module_name;
68 /* Set appropriate tod module */
69 if (tod_module_name == NULL)
70 tod_module_name = "todm5823";
71
72 cpu_sgn_func = cpu_sgn_update;
73 }
74
75 /*
76 * these two dummy functions are loaded over the original
77 * todm5823 set and clear_power_alarm functions. On Seattle
78 * these functions are not supported, and thus we need to provide
79 * dummy functions that just returns.
80 * On Seattle, clock chip is not persistant across reboots,
81 * and moreover it has a bug sending memory access.
82 * This fix is done by writing over the original
83 * tod_ops function pointer with our dummy replacement functions.
84 */
85 /*ARGSUSED*/
86 static void
dummy_todm5823_set_power_alarm(timestruc_t ts)87 dummy_todm5823_set_power_alarm(timestruc_t ts)
88 {
89 }
90
91 static void
dummy_todm5823_clear_power_alarm(void)92 dummy_todm5823_clear_power_alarm(void)
93 {
94 }
95
96 /*
97 * Definitions for accessing the pci config space of the isa node
98 * of Southbridge.
99 */
100 static ddi_acc_handle_t isa_handle = NULL; /* handle for isa pci space */
101
102 /*
103 * Definition for accessing rmclomv
104 */
105 #define RMCLOMV_PATHNAME "/pseudo/rmclomv@0"
106
107 void
load_platform_drivers(void)108 load_platform_drivers(void)
109 {
110 dev_info_t *rmclomv_dip;
111 /*
112 * It is OK to return error because 'us' driver is not available
113 * in all clusters (e.g. missing in Core cluster).
114 */
115 (void) i_ddi_attach_hw_nodes("us");
116
117
118 /*
119 * mc-us3i must stay loaded for plat_get_mem_unum()
120 */
121 if (i_ddi_attach_hw_nodes("mc-us3i") != DDI_SUCCESS)
122 cmn_err(CE_WARN, "mc-us3i driver failed to install");
123 (void) ddi_hold_driver(ddi_name_to_major("mc-us3i"));
124
125 /*
126 * load the power button driver
127 */
128 if (i_ddi_attach_hw_nodes("power") != DDI_SUCCESS)
129 cmn_err(CE_WARN, "power button driver failed to install");
130 else
131 (void) ddi_hold_driver(ddi_name_to_major("power"));
132
133 /*
134 * load the GPIO driver for the ALOM reset and watchdog lines
135 */
136 if (i_ddi_attach_hw_nodes("pmugpio") != DDI_SUCCESS)
137 cmn_err(CE_WARN, "pmugpio failed to install");
138 else {
139 extern int watchdog_enable, watchdog_available;
140 extern int disable_watchdog_on_exit;
141
142 /*
143 * Disable an active h/w watchdog timer upon exit to OBP.
144 */
145 disable_watchdog_on_exit = 1;
146
147 watchdog_enable = 1;
148 watchdog_available = 1;
149 }
150 (void) ddi_hold_driver(ddi_name_to_major("pmugpio"));
151
152 /*
153 * Figure out which mi2cv dip is shared with OBP for the nvram
154 * device, so the lock can be acquired.
155 */
156 shared_mi2cv_dip = e_ddi_hold_devi_by_path(SHARED_MI2CV_PATH, 0);
157 /*
158 * Load the environmentals driver (rmclomv)
159 *
160 * We need this driver to handle events from the RMC when state
161 * changes occur in the environmental data.
162 */
163 if (i_ddi_attach_hw_nodes("rmc_comm") != DDI_SUCCESS) {
164 cmn_err(CE_WARN, "rmc_comm failed to install");
165 } else {
166 (void) ddi_hold_driver(ddi_name_to_major("rmc_comm"));
167
168 rmclomv_dip = e_ddi_hold_devi_by_path(RMCLOMV_PATHNAME, 0);
169 if (rmclomv_dip == NULL) {
170 cmn_err(CE_WARN, "Could not install rmclomv driver\n");
171 }
172 }
173
174 /*
175 * These two dummy functions are loaded over the original
176 * todm5823 set and clear_power_alarm functions. On Seattle,
177 * these functionalities are not supported.
178 * The load_platform_drivers(void) is called from post_startup()
179 * which is after all the initialization of the tod module is
180 * finished, then we replace 2 of the tod_ops function pointers
181 * with our dummy version.
182 */
183 tod_ops.tod_set_power_alarm = dummy_todm5823_set_power_alarm;
184 tod_ops.tod_clear_power_alarm = dummy_todm5823_clear_power_alarm;
185
186 /*
187 * create a handle to the rmc_comm_request_nowait() function
188 * inside the rmc_comm module.
189 *
190 * The Seattle/Boston todm5823 driver will use this handle to
191 * use the rmc_comm_request_nowait() function to send time/date
192 * updates to ALOM.
193 */
194 rmc_req_now = (int (*)(rmc_comm_msg_t *, uint8_t))
195 modgetsymvalue("rmc_comm_request_nowait", 0);
196 }
197
198 /*
199 * This routine is needed if a device error or timeout occurs before the
200 * driver is loaded.
201 */
202 /*ARGSUSED*/
203 int
plat_ide_chipreset(dev_info_t * dip,int chno)204 plat_ide_chipreset(dev_info_t *dip, int chno)
205 {
206 int ret = DDI_SUCCESS;
207
208 if (isa_handle == NULL) {
209 return (DDI_FAILURE);
210 }
211
212 /*
213 * This will be filled in with the reset logic
214 * for the ULI1573 when that becomes available.
215 * currently this is just a stub.
216 */
217 return (ret);
218 }
219
220
221 /*ARGSUSED*/
222 int
plat_cpu_poweron(struct cpu * cp)223 plat_cpu_poweron(struct cpu *cp)
224 {
225 return (ENOTSUP); /* not supported on this platform */
226 }
227
228 /*ARGSUSED*/
229 int
plat_cpu_poweroff(struct cpu * cp)230 plat_cpu_poweroff(struct cpu *cp)
231 {
232 return (ENOTSUP); /* not supported on this platform */
233 }
234
235 /*ARGSUSED*/
236 void
plat_freelist_process(int mnode)237 plat_freelist_process(int mnode)
238 {
239 }
240
241 char *platform_module_list[] = {
242 "mi2cv",
243 "pca9556",
244 (char *)0
245 };
246
247 /*ARGSUSED*/
248 void
plat_tod_fault(enum tod_fault_type tod_bad)249 plat_tod_fault(enum tod_fault_type tod_bad)
250 {
251 }
252
253 /*ARGSUSED*/
254 int
plat_get_mem_unum(int synd_code,uint64_t flt_addr,int flt_bus_id,int flt_in_memory,ushort_t flt_status,char * buf,int buflen,int * lenp)255 plat_get_mem_unum(int synd_code, uint64_t flt_addr, int flt_bus_id,
256 int flt_in_memory, ushort_t flt_status, char *buf, int buflen, int *lenp)
257 {
258 if (flt_in_memory && (p2get_mem_unum != NULL))
259 return (p2get_mem_unum(synd_code, P2ALIGN(flt_addr, 8),
260 buf, buflen, lenp));
261 else
262 return (ENOTSUP);
263 }
264
265 /*
266 * This platform hook gets called from mc_add_mem_unum_label() in the mc-us3i
267 * driver giving each platform the opportunity to add platform
268 * specific label information to the unum for ECC error logging purposes.
269 */
270 /*ARGSUSED*/
271 void
plat_add_mem_unum_label(char * unum,int mcid,int bank,int dimm)272 plat_add_mem_unum_label(char *unum, int mcid, int bank, int dimm)
273 {
274 char old_unum[UNUM_NAMLEN];
275 int printed;
276 int buflen = UNUM_NAMLEN;
277 (void) strcpy(old_unum, unum);
278 printed = snprintf(unum, buflen, "MB/P%d/B%d", mcid, bank);
279 buflen -= printed;
280 unum += printed;
281
282 if (dimm != -1) {
283 printed = snprintf(unum, buflen, "/D%d", dimm);
284 buflen -= printed;
285 unum += printed;
286 }
287
288 (void) snprintf(unum, buflen, ": %s", old_unum);
289 }
290
291 /*ARGSUSED*/
292 int
plat_get_cpu_unum(int cpuid,char * buf,int buflen,int * lenp)293 plat_get_cpu_unum(int cpuid, char *buf, int buflen, int *lenp)
294 {
295 if (snprintf(buf, buflen, "MB") >= buflen) {
296 return (ENOSPC);
297 } else {
298 *lenp = strlen(buf);
299 return (0);
300 }
301 }
302
303 /*
304 * Our nodename has been set, pass it along to the RMC.
305 */
306 void
plat_nodename_set(void)307 plat_nodename_set(void)
308 {
309 rmc_comm_msg_t req; /* request */
310 int (*rmc_req_res)(rmc_comm_msg_t *, rmc_comm_msg_t *, time_t) = NULL;
311
312 /*
313 * find the symbol for the mailbox routine
314 */
315 rmc_req_res = (int (*)(rmc_comm_msg_t *, rmc_comm_msg_t *, time_t))
316 modgetsymvalue("rmc_comm_request_response", 0);
317
318 if (rmc_req_res == NULL) {
319 return;
320 }
321
322 /*
323 * construct the message telling the RMC our nodename
324 */
325 req.msg_type = DP_SET_CPU_NODENAME;
326 req.msg_len = strlen(utsname.nodename) + 1;
327 req.msg_bytes = 0;
328 req.msg_buf = (caddr_t)utsname.nodename;
329
330 /*
331 * ship it
332 */
333 (void) (rmc_req_res)(&req, NULL, 2000);
334 }
335
336 sig_state_t current_sgn;
337
338 /*
339 * cpu signatures - we're only interested in the overall system
340 * "signature" on this platform - not individual cpu signatures
341 */
342 /*ARGSUSED*/
343 static void
cpu_sgn_update(ushort_t sig,uchar_t state,uchar_t sub_state,int cpuid)344 cpu_sgn_update(ushort_t sig, uchar_t state, uchar_t sub_state, int cpuid)
345 {
346 dp_cpu_signature_t signature;
347 rmc_comm_msg_t req; /* request */
348 int (*rmc_req_now)(rmc_comm_msg_t *, uint8_t) = NULL;
349
350
351 /*
352 * Differentiate a panic reboot from a non-panic reboot in the
353 * setting of the substate of the signature.
354 *
355 * If the new substate is REBOOT and we're rebooting due to a panic,
356 * then set the new substate to a special value indicating a panic
357 * reboot, SIGSUBST_PANIC_REBOOT.
358 *
359 * A panic reboot is detected by a current (previous) signature
360 * state of SIGST_EXIT, and a new signature substate of SIGSUBST_REBOOT.
361 * The domain signature state SIGST_EXIT is used as the panic flow
362 * progresses.
363 *
364 * At the end of the panic flow, the reboot occurs but we should know
365 * one that was involuntary, something that may be quite useful to know
366 * at OBP level.
367 */
368 if (state == SIGST_EXIT && sub_state == SIGSUBST_REBOOT) {
369 if (current_sgn.state_t.state == SIGST_EXIT &&
370 current_sgn.state_t.sub_state != SIGSUBST_REBOOT)
371 sub_state = SIGSUBST_PANIC_REBOOT;
372 }
373
374 /*
375 * offline and detached states only apply to a specific cpu
376 * so ignore them.
377 */
378 if (state == SIGST_OFFLINE || state == SIGST_DETACHED) {
379 return;
380 }
381
382 current_sgn.signature = CPU_SIG_BLD(sig, state, sub_state);
383
384 /*
385 * find the symbol for the mailbox routine
386 */
387 rmc_req_now = (int (*)(rmc_comm_msg_t *, uint8_t))
388 modgetsymvalue("rmc_comm_request_nowait", 0);
389 if (rmc_req_now == NULL) {
390 return;
391 }
392
393 signature.cpu_id = -1;
394 signature.sig = sig;
395 signature.states = state;
396 signature.sub_state = sub_state;
397 req.msg_type = DP_SET_CPU_SIGNATURE;
398 req.msg_len = (int)(sizeof (signature));
399 req.msg_bytes = 0;
400 req.msg_buf = (caddr_t)&signature;
401
402 /*
403 * We need to tell the SP that the host is about to stop running. The
404 * SP will then allow the date to be set at its console, it will change
405 * state of the activity indicator, it will display the correct host
406 * status, and it will stop sending console messages and alerts to the
407 * host communication channel.
408 *
409 * This requires the RMC_COMM_DREQ_URGENT as we want to
410 * be sure activity indicators will reflect the correct status.
411 *
412 * When sub_state SIGSUBST_DUMP is sent, the urgent flag
413 * (RMC_COMM_DREQ_URGENT) is not required as SIGSUBST_PANIC_REBOOT
414 * has already been sent and changed activity indicators.
415 */
416 if (state == SIGST_EXIT && (sub_state == SIGSUBST_HALT ||
417 sub_state == SIGSUBST_REBOOT || sub_state == SIGSUBST_ENVIRON ||
418 sub_state == SIGSUBST_PANIC_REBOOT))
419 (void) (rmc_req_now)(&req, RMC_COMM_DREQ_URGENT);
420 else
421 (void) (rmc_req_now)(&req, 0);
422 }
423
424 /*
425 * Fiesta support for lgroups.
426 *
427 * On fiesta platform, an lgroup platform handle == CPU id
428 */
429
430 /*
431 * Macro for extracting the CPU number from the CPU id
432 */
433 #define CPUID_TO_LGRP(id) ((id) & 0x7)
434 #define PLATFORM_MC_SHIFT 36
435
436 /*
437 * Return the platform handle for the lgroup containing the given CPU
438 */
439 void *
plat_lgrp_cpu_to_hand(processorid_t id)440 plat_lgrp_cpu_to_hand(processorid_t id)
441 {
442 return ((void *)(uintptr_t)CPUID_TO_LGRP(id));
443 }
444
445 /*
446 * Platform specific lgroup initialization
447 */
448 void
plat_lgrp_init(void)449 plat_lgrp_init(void)
450 {
451 pnode_t curnode;
452 char tmp_name[sizeof (OBP_CPU) + 1]; /* extra padding */
453 int portid;
454 int cpucnt = 0;
455 int max_portid = -1;
456 extern uint32_t lgrp_expand_proc_thresh;
457 extern uint32_t lgrp_expand_proc_diff;
458 extern pgcnt_t lgrp_mem_free_thresh;
459 extern uint32_t lgrp_loadavg_tolerance;
460 extern uint32_t lgrp_loadavg_max_effect;
461 extern uint32_t lgrp_load_thresh;
462 extern lgrp_mem_policy_t lgrp_mem_policy_root;
463
464 /*
465 * Count the number of CPUs installed to determine if
466 * NUMA optimization should be enabled or not.
467 *
468 * All CPU nodes reside in the root node and have a
469 * device type "cpu".
470 */
471 curnode = prom_rootnode();
472 for (curnode = prom_childnode(curnode); curnode;
473 curnode = prom_nextnode(curnode)) {
474 bzero(tmp_name, sizeof (tmp_name));
475 if (prom_bounded_getprop(curnode, OBP_DEVICETYPE, tmp_name,
476 sizeof (OBP_CPU)) == -1 || strcmp(tmp_name, OBP_CPU) != 0)
477 continue;
478
479 cpucnt++;
480
481 if (prom_getprop(curnode, "portid", (caddr_t)&portid) !=
482 -1 && portid > max_portid)
483 max_portid = portid;
484 }
485 if (cpucnt <= 1)
486 max_mem_nodes = 1;
487 else if (max_portid >= 0 && max_portid < MAX_MEM_NODES)
488 max_mem_nodes = max_portid + 1;
489
490 /*
491 * Set tuneables for fiesta architecture
492 *
493 * lgrp_expand_proc_thresh is the minimum load on the lgroups
494 * this process is currently running on before considering
495 * expanding threads to another lgroup.
496 *
497 * lgrp_expand_proc_diff determines how much less the remote lgroup
498 * must be loaded before expanding to it.
499 *
500 * Optimize for memory bandwidth by spreading multi-threaded
501 * program to different lgroups.
502 */
503 lgrp_expand_proc_thresh = lgrp_loadavg_max_effect - 1;
504 lgrp_expand_proc_diff = lgrp_loadavg_max_effect / 2;
505 lgrp_loadavg_tolerance = lgrp_loadavg_max_effect / 2;
506 lgrp_mem_free_thresh = 1; /* home lgrp must have some memory */
507 lgrp_expand_proc_thresh = lgrp_loadavg_max_effect - 1;
508 lgrp_mem_policy_root = LGRP_MEM_POLICY_NEXT;
509 lgrp_load_thresh = 0;
510
511 mem_node_pfn_shift = PLATFORM_MC_SHIFT - MMU_PAGESHIFT;
512 }
513
514 /*
515 * Return latency between "from" and "to" lgroups
516 *
517 * This latency number can only be used for relative comparison
518 * between lgroups on the running system, cannot be used across platforms,
519 * and may not reflect the actual latency. It is platform and implementation
520 * specific, so platform gets to decide its value. It would be nice if the
521 * number was at least proportional to make comparisons more meaningful though.
522 * NOTE: The numbers below are supposed to be load latencies for uncached
523 * memory divided by 10.
524 */
525 int
plat_lgrp_latency(void * from,void * to)526 plat_lgrp_latency(void *from, void *to)
527 {
528 /*
529 * Return remote latency when there are more than two lgroups
530 * (root and child) and getting latency between two different
531 * lgroups or root is involved
532 */
533 if (lgrp_optimizations() && (from != to || from ==
534 (void *) LGRP_DEFAULT_HANDLE || to == (void *) LGRP_DEFAULT_HANDLE))
535 return (17);
536 else
537 return (12);
538 }
539
540 int
plat_pfn_to_mem_node(pfn_t pfn)541 plat_pfn_to_mem_node(pfn_t pfn)
542 {
543 ASSERT(max_mem_nodes > 1);
544 return (pfn >> mem_node_pfn_shift);
545 }
546
547 /*
548 * Assign memnode to lgroups
549 */
550 void
plat_fill_mc(pnode_t nodeid)551 plat_fill_mc(pnode_t nodeid)
552 {
553 int portid;
554
555 /*
556 * Memory controller portid == global CPU id
557 */
558 if ((prom_getprop(nodeid, "portid", (caddr_t)&portid) == -1) ||
559 (portid < 0))
560 return;
561
562 if (portid < max_mem_nodes)
563 plat_assign_lgrphand_to_mem_node((lgrp_handle_t)portid, portid);
564 }
565
566 /*
567 * Common locking enter code
568 */
569 void
plat_setprop_enter(void)570 plat_setprop_enter(void)
571 {
572 mutex_enter(&mi2cv_mutex);
573 }
574
575 /*
576 * Common locking exit code
577 */
578 void
plat_setprop_exit(void)579 plat_setprop_exit(void)
580 {
581 mutex_exit(&mi2cv_mutex);
582 }
583
584 /*
585 * Called by mi2cv driver
586 */
587 void
plat_shared_i2c_enter(dev_info_t * i2cnexus_dip)588 plat_shared_i2c_enter(dev_info_t *i2cnexus_dip)
589 {
590 if (i2cnexus_dip == shared_mi2cv_dip) {
591 plat_setprop_enter();
592 }
593 }
594
595 /*
596 * Called by mi2cv driver
597 */
598 void
plat_shared_i2c_exit(dev_info_t * i2cnexus_dip)599 plat_shared_i2c_exit(dev_info_t *i2cnexus_dip)
600 {
601 if (i2cnexus_dip == shared_mi2cv_dip) {
602 plat_setprop_exit();
603 }
604 }
605 /*
606 * Called by todm5823 driver
607 */
608 void
plat_rmc_comm_req(struct rmc_comm_msg * request)609 plat_rmc_comm_req(struct rmc_comm_msg *request)
610 {
611 if (rmc_req_now)
612 (void) rmc_req_now(request, 0);
613 }
614