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 /*
28 * Copyright (c) 2018, Joyent, Inc.
29 */
30
31 #include <sys/types.h>
32 #include <sys/time.h>
33 #include <sys/nvpair.h>
34 #include <sys/cmn_err.h>
35 #include <sys/cred.h>
36 #include <sys/open.h>
37 #include <sys/ddi.h>
38 #include <sys/sunddi.h>
39 #include <sys/conf.h>
40 #include <sys/modctl.h>
41 #include <sys/cyclic.h>
42 #include <sys/errorq.h>
43 #include <sys/stat.h>
44 #include <sys/cpuvar.h>
45 #include <sys/mc_intel.h>
46 #include <sys/mc.h>
47 #include <sys/fm/protocol.h>
48 #include "nhm_log.h"
49 #include "intel_nhm.h"
50
51 int max_bus_number = 0xff;
52
53 nvlist_t *inhm_mc_nvl[MAX_CPU_NODES];
54 krwlock_t inhm_mc_lock;
55
56 char *inhm_mc_snapshot[MAX_CPU_NODES];
57 uint_t nhm_config_gen;
58 uint_t inhm_mc_snapshotgen;
59 size_t inhm_mc_snapshotsz[MAX_CPU_NODES];
60 static dev_info_t *inhm_dip;
61 int nhm_allow_detach = 0;
62
63 extern int nhm_patrol_scrub;
64 extern int nhm_demand_scrub;
65 extern int nhm_no_smbios;
66 extern int nhm_smbios_serial;
67 extern int nhm_smbios_manufacturer;
68 extern int nhm_smbios_part_number;
69 extern int nhm_smbios_version;
70 extern int nhm_smbios_label;
71
72 extern void inhm_create_nvl(int);
73 extern char *inhm_mc_name(void);
74 extern void init_dimms(void);
75 extern void nhm_smbios();
76
77 static void
inhm_mc_snapshot_destroy()78 inhm_mc_snapshot_destroy()
79 {
80 int i;
81
82 ASSERT(RW_LOCK_HELD(&inhm_mc_lock));
83
84 for (i = 0; i < MAX_CPU_NODES; i++) {
85 if (inhm_mc_snapshot[i] == NULL)
86 continue;
87
88 kmem_free(inhm_mc_snapshot[i], inhm_mc_snapshotsz[i]);
89 inhm_mc_snapshot[i] = NULL;
90 inhm_mc_snapshotsz[i] = 0;
91 }
92 inhm_mc_snapshotgen++;
93 }
94
95 static int
inhm_mc_snapshot_update()96 inhm_mc_snapshot_update()
97 {
98 int i;
99 int rt = 0;
100
101 ASSERT(RW_LOCK_HELD(&inhm_mc_lock));
102
103 for (i = 0; i < MAX_CPU_NODES; i++) {
104 if (inhm_mc_snapshot[i] != NULL)
105 continue;
106
107 if (nvlist_pack(inhm_mc_nvl[i], &inhm_mc_snapshot[i],
108 &inhm_mc_snapshotsz[i], NV_ENCODE_XDR, KM_SLEEP) != 0)
109 rt = -1;
110 }
111
112 return (rt);
113 }
114
115 /*ARGSUSED*/
116 static int
inhm_mc_ioctl(dev_t dev,int cmd,intptr_t arg,int mode,cred_t * credp,int * rvalp)117 inhm_mc_ioctl(dev_t dev, int cmd, intptr_t arg, int mode, cred_t *credp,
118 int *rvalp)
119 {
120 int rc = 0;
121 int chip;
122 mc_snapshot_info_t mcs;
123
124 if (cmd != MC_IOC_SNAPSHOT_INFO && cmd != MC_IOC_SNAPSHOT)
125 return (EINVAL);
126
127 rw_enter(&inhm_mc_lock, RW_READER);
128 chip = getminor(dev) % MAX_CPU_NODES;
129 if (inhm_mc_nvl[chip] == NULL ||
130 inhm_mc_snapshotgen != nhm_config_gen) {
131 if (!rw_tryupgrade(&inhm_mc_lock)) {
132 rw_exit(&inhm_mc_lock);
133 return (EAGAIN);
134 }
135 if (inhm_mc_nvl[chip])
136 inhm_mc_snapshot_destroy();
137 inhm_create_nvl(chip);
138 nhm_config_gen = inhm_mc_snapshotgen;
139 (void) inhm_mc_snapshot_update();
140 }
141 switch (cmd) {
142 case MC_IOC_SNAPSHOT_INFO:
143 mcs.mcs_size = (uint32_t)inhm_mc_snapshotsz[chip];
144 mcs.mcs_gen = inhm_mc_snapshotgen;
145
146 if (ddi_copyout(&mcs, (void *)arg, sizeof (mc_snapshot_info_t),
147 mode) < 0)
148 rc = EFAULT;
149 break;
150 case MC_IOC_SNAPSHOT:
151 if (ddi_copyout(inhm_mc_snapshot[chip], (void *)arg,
152 inhm_mc_snapshotsz[chip], mode) < 0)
153 rc = EFAULT;
154 break;
155 }
156 rw_exit(&inhm_mc_lock);
157 return (rc);
158 }
159
160 /*ARGSUSED*/
161 static int
inhm_mc_getinfo(dev_info_t * dip,ddi_info_cmd_t infocmd,void * arg,void ** result)162 inhm_mc_getinfo(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg,
163 void **result)
164 {
165 if ((infocmd != DDI_INFO_DEVT2DEVINFO &&
166 infocmd != DDI_INFO_DEVT2INSTANCE) || inhm_dip == NULL) {
167 *result = NULL;
168 return (DDI_FAILURE);
169 }
170 if (infocmd == DDI_INFO_DEVT2DEVINFO)
171 *result = inhm_dip;
172 else
173 *result = (void *)(uintptr_t)ddi_get_instance(inhm_dip);
174 return (0);
175 }
176
177 static int
inhm_mc_attach(dev_info_t * dip,ddi_attach_cmd_t cmd)178 inhm_mc_attach(dev_info_t *dip, ddi_attach_cmd_t cmd)
179 {
180 int i;
181 char buf[64];
182
183 if (cmd == DDI_RESUME) {
184 nhm_dev_reinit();
185 nhm_scrubber_enable();
186 nhm_smbios();
187 return (DDI_SUCCESS);
188 }
189 if (cmd != DDI_ATTACH)
190 return (DDI_FAILURE);
191 if (inhm_dip == NULL) {
192 inhm_dip = dip;
193 nhm_pci_cfg_setup(dip);
194 (void) ddi_prop_update_string(DDI_DEV_T_NONE, dip, "model",
195 inhm_mc_name());
196 if (nhm_dev_init()) {
197 nhm_pci_cfg_free();
198 inhm_dip = NULL;
199 return (DDI_FAILURE);
200 }
201 ddi_set_name_addr(dip, "1");
202 for (i = 0; i < MAX_CPU_NODES; i++) {
203 (void) snprintf(buf, sizeof (buf), "mc-intel-%d", i);
204 if (ddi_create_minor_node(dip, buf, S_IFCHR,
205 i, "ddi_mem_ctrl", 0) != DDI_SUCCESS) {
206 cmn_err(CE_WARN, "failed to create minor node"
207 " for memory controller %d\n", i);
208 }
209 }
210 cmi_hdl_walk(inhm_mc_register, NULL, NULL, NULL);
211 nhm_patrol_scrub = ddi_prop_get_int(DDI_DEV_T_ANY, dip,
212 DDI_PROP_DONTPASS, "patrol-scrub", 0);
213 nhm_demand_scrub = ddi_prop_get_int(DDI_DEV_T_ANY, dip,
214 DDI_PROP_DONTPASS, "demand-scrub", 0);
215 nhm_no_smbios = ddi_prop_get_int(DDI_DEV_T_ANY, dip,
216 DDI_PROP_DONTPASS, "no-smbios", 0);
217 nhm_smbios_serial = ddi_prop_get_int(DDI_DEV_T_ANY, dip,
218 DDI_PROP_DONTPASS, "smbios-dimm-serial", 1);
219 nhm_smbios_manufacturer = ddi_prop_get_int(DDI_DEV_T_ANY, dip,
220 DDI_PROP_DONTPASS, "smbios-dimm-manufacturer", 1);
221 nhm_smbios_part_number = ddi_prop_get_int(DDI_DEV_T_ANY, dip,
222 DDI_PROP_DONTPASS, "smbios-dimm-part-number", 1);
223 nhm_smbios_version = ddi_prop_get_int(DDI_DEV_T_ANY, dip,
224 DDI_PROP_DONTPASS, "smbios-dimme-version", 1);
225 nhm_smbios_label = ddi_prop_get_int(DDI_DEV_T_ANY, dip,
226 DDI_PROP_DONTPASS, "smbios-dimm-label", 1);
227 nhm_scrubber_enable();
228 nhm_smbios();
229 }
230
231 return (DDI_SUCCESS);
232 }
233
234 /*ARGSUSED*/
235 static int
inhm_mc_detach(dev_info_t * dip,ddi_detach_cmd_t cmd)236 inhm_mc_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
237 {
238 if (nhm_allow_detach && cmd == DDI_DETACH && dip == inhm_dip) {
239 rw_enter(&inhm_mc_lock, RW_WRITER);
240 inhm_mc_snapshot_destroy();
241 rw_exit(&inhm_mc_lock);
242 inhm_dip = NULL;
243 return (DDI_SUCCESS);
244 } else if (cmd == DDI_SUSPEND || cmd == DDI_PM_SUSPEND) {
245 return (DDI_SUCCESS);
246 } else {
247 return (DDI_FAILURE);
248 }
249 }
250
251 /*ARGSUSED*/
252 static int
inhm_mc_open(dev_t * devp,int flag,int otyp,cred_t * credp)253 inhm_mc_open(dev_t *devp, int flag, int otyp, cred_t *credp)
254 {
255 if (otyp != OTYP_CHR)
256 return (EINVAL);
257
258 rw_enter(&inhm_mc_lock, RW_READER);
259 if (getminor(*devp) >= MAX_CPU_NODES) {
260 rw_exit(&inhm_mc_lock);
261 return (EINVAL);
262 }
263 rw_exit(&inhm_mc_lock);
264
265 return (0);
266 }
267
268 /*ARGSUSED*/
269 static int
inhm_mc_close(dev_t dev,int flag,int otyp,cred_t * credp)270 inhm_mc_close(dev_t dev, int flag, int otyp, cred_t *credp)
271 {
272 return (0);
273 }
274
275
276 static struct cb_ops inhm_mc_cb_ops = {
277 inhm_mc_open,
278 inhm_mc_close,
279 nodev, /* not a block driver */
280 nodev, /* no print routine */
281 nodev, /* no dump routine */
282 nodev, /* no read routine */
283 nodev, /* no write routine */
284 inhm_mc_ioctl,
285 nodev, /* no devmap routine */
286 nodev, /* no mmap routine */
287 nodev, /* no segmap routine */
288 nochpoll, /* no chpoll routine */
289 ddi_prop_op,
290 0, /* not a STREAMS driver */
291 D_NEW | D_MP, /* safe for multi-thread/multi-processor */
292 };
293
294 static struct dev_ops inhm_mc_ops = {
295 DEVO_REV, /* devo_rev */
296 0, /* devo_refcnt */
297 inhm_mc_getinfo, /* devo_getinfo */
298 nulldev, /* devo_identify */
299 nulldev, /* devo_probe */
300 inhm_mc_attach, /* devo_attach */
301 inhm_mc_detach, /* devo_detach */
302 nodev, /* devo_reset */
303 &inhm_mc_cb_ops, /* devo_cb_ops */
304 NULL, /* devo_bus_ops */
305 NULL, /* devo_power */
306 ddi_quiesce_not_needed, /* devo_quiesce */
307 };
308
309 static struct modldrv modldrv = {
310 &mod_driverops,
311 "Intel QuickPath Memory Controller Hub Module",
312 &inhm_mc_ops
313 };
314
315 static struct modlinkage modlinkage = {
316 MODREV_1,
317 (void *)&modldrv,
318 NULL
319 };
320
321 int
_init(void)322 _init(void)
323 {
324 int err;
325
326 err = nhm_init();
327 if (err == 0 && (err = mod_install(&modlinkage)) == 0) {
328 rw_init(&inhm_mc_lock, NULL, RW_DRIVER, NULL);
329 init_dimms();
330 }
331
332 return (err);
333 }
334
335 int
_info(struct modinfo * modinfop)336 _info(struct modinfo *modinfop)
337 {
338 return (mod_info(&modlinkage, modinfop));
339 }
340
341 int
_fini(void)342 _fini(void)
343 {
344 int err;
345
346 if ((err = mod_remove(&modlinkage)) == 0) {
347 nhm_unload();
348 rw_destroy(&inhm_mc_lock);
349 }
350
351 return (err);
352 }
353