2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2008, 2009 Rui Paulo <rpaulo@FreeBSD.org>
5 * Copyright (c) 2009 Norikatsu Shigemura <nork@FreeBSD.org>
6 * Copyright (c) 2009-2012 Jung-uk Kim <jkim@FreeBSD.org>
8 * Copyright (c) 2017-2020 Conrad Meyer <cem@FreeBSD.org>. All rights reserved.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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.
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
21 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
22 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
23 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
25 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
27 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
28 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
33 * Driver for the AMD CPU on-die thermal sensors.
34 * Initially based on the k8temp Linux driver.
37 #include <sys/cdefs.h>
38 __FBSDID("$FreeBSD$");
40 #include <sys/param.h>
43 #include <sys/kernel.h>
44 #include <sys/module.h>
45 #include <sys/sysctl.h>
46 #include <sys/systm.h>
48 #include <machine/cpufunc.h>
49 #include <machine/md_var.h>
50 #include <machine/specialreg.h>
52 #include <dev/pci/pcivar.h>
53 #include <x86/pci_cfgreg.h>
55 #include <dev/amdsmn/amdsmn.h>
74 NUM_CCDS = CCD_MAX - CCD_BASE + 1,
77 struct amdtemp_softc {
81 #define AMDTEMP_FLAG_CS_SWAP 0x01 /* ThermSenseCoreSel is inverted. */
82 #define AMDTEMP_FLAG_CT_10BIT 0x02 /* CurTmp is 10-bit wide. */
83 #define AMDTEMP_FLAG_ALT_OFFSET 0x04 /* CurTmp starts at -28C. */
85 int32_t (*sc_gettemp)(device_t, amdsensor_t);
86 struct sysctl_oid *sc_sysctl_cpu[MAXCPU];
87 struct intr_config_hook sc_ich;
92 * N.B. The numbers in macro names below are significant and represent CPU
93 * family and model numbers. Do not make up fictitious family or model numbers
94 * when adding support for new devices.
96 #define VENDORID_AMD 0x1022
97 #define DEVICEID_AMD_MISC0F 0x1103
98 #define DEVICEID_AMD_MISC10 0x1203
99 #define DEVICEID_AMD_MISC11 0x1303
100 #define DEVICEID_AMD_MISC14 0x1703
101 #define DEVICEID_AMD_MISC15 0x1603
102 #define DEVICEID_AMD_MISC15_M10H 0x1403
103 #define DEVICEID_AMD_MISC15_M30H 0x141d
104 #define DEVICEID_AMD_MISC15_M60H_ROOT 0x1576
105 #define DEVICEID_AMD_MISC16 0x1533
106 #define DEVICEID_AMD_MISC16_M30H 0x1583
107 #define DEVICEID_AMD_HOSTB17H_ROOT 0x1450
108 #define DEVICEID_AMD_HOSTB17H_M10H_ROOT 0x15d0
109 #define DEVICEID_AMD_HOSTB17H_M30H_ROOT 0x1480 /* Also M70H, F19H M00H/M20H */
110 #define DEVICEID_AMD_HOSTB17H_M60H_ROOT 0x1630
112 static const struct amdtemp_product {
113 uint16_t amdtemp_vendorid;
114 uint16_t amdtemp_deviceid;
116 * 0xFC register is only valid on the D18F3 PCI device; SMN temp
117 * drivers do not attach to that device.
119 bool amdtemp_has_cpuid;
120 } amdtemp_products[] = {
121 { VENDORID_AMD, DEVICEID_AMD_MISC0F, true },
122 { VENDORID_AMD, DEVICEID_AMD_MISC10, true },
123 { VENDORID_AMD, DEVICEID_AMD_MISC11, true },
124 { VENDORID_AMD, DEVICEID_AMD_MISC14, true },
125 { VENDORID_AMD, DEVICEID_AMD_MISC15, true },
126 { VENDORID_AMD, DEVICEID_AMD_MISC15_M10H, true },
127 { VENDORID_AMD, DEVICEID_AMD_MISC15_M30H, true },
128 { VENDORID_AMD, DEVICEID_AMD_MISC15_M60H_ROOT, false },
129 { VENDORID_AMD, DEVICEID_AMD_MISC16, true },
130 { VENDORID_AMD, DEVICEID_AMD_MISC16_M30H, true },
131 { VENDORID_AMD, DEVICEID_AMD_HOSTB17H_ROOT, false },
132 { VENDORID_AMD, DEVICEID_AMD_HOSTB17H_M10H_ROOT, false },
133 { VENDORID_AMD, DEVICEID_AMD_HOSTB17H_M30H_ROOT, false },
134 { VENDORID_AMD, DEVICEID_AMD_HOSTB17H_M60H_ROOT, false },
138 * Reported Temperature Control Register, family 0Fh-15h (some models), 16h.
140 #define AMDTEMP_REPTMP_CTRL 0xa4
142 #define AMDTEMP_REPTMP10H_CURTMP_MASK 0x7ff
143 #define AMDTEMP_REPTMP10H_CURTMP_SHIFT 21
144 #define AMDTEMP_REPTMP10H_TJSEL_MASK 0x3
145 #define AMDTEMP_REPTMP10H_TJSEL_SHIFT 16
148 * Reported Temperature, Family 15h, M60+
150 * Same register bit definitions as other Family 15h CPUs, but access is
151 * indirect via SMN, like Family 17h.
153 #define AMDTEMP_15H_M60H_REPTMP_CTRL 0xd8200ca4
156 * Reported Temperature, Family 17h
158 * According to AMD OSRR for 17H, section 4.2.1, bits 31-21 of this register
159 * provide the current temp. bit 19, when clear, means the temp is reported in
160 * a range 0.."225C" (probable typo for 255C), and when set changes the range
163 #define AMDTEMP_17H_CUR_TMP 0x59800
164 #define AMDTEMP_17H_CUR_TMP_RANGE_SEL (1u << 19)
166 * The following register set was discovered experimentally by Ondrej Čerman
167 * and collaborators, but is not (yet) documented in a PPR/OSRR (other than
168 * the M70H PPR SMN memory map showing [0x59800, +0x314] as allocated to
169 * SMU::THM). It seems plausible and the Linux sensor folks have adopted it.
171 #define AMDTEMP_17H_CCD_TMP_BASE 0x59954
172 #define AMDTEMP_17H_CCD_TMP_VALID (1u << 11)
175 * AMD temperature range adjustment, in deciKelvins (i.e., 49.0 Celsius).
177 #define AMDTEMP_CURTMP_RANGE_ADJUST 490
180 * Thermaltrip Status Register (Family 0Fh only)
182 #define AMDTEMP_THERMTP_STAT 0xe4
183 #define AMDTEMP_TTSR_SELCORE 0x04
184 #define AMDTEMP_TTSR_SELSENSOR 0x40
187 * DRAM Configuration High Register
189 #define AMDTEMP_DRAM_CONF_HIGH 0x94 /* Function 2 */
190 #define AMDTEMP_DRAM_MODE_DDR3 0x0100
193 * CPU Family/Model Register
195 #define AMDTEMP_CPUID 0xfc
200 static void amdtemp_identify(driver_t *driver, device_t parent);
201 static int amdtemp_probe(device_t dev);
202 static int amdtemp_attach(device_t dev);
203 static void amdtemp_intrhook(void *arg);
204 static int amdtemp_detach(device_t dev);
205 static int32_t amdtemp_gettemp0f(device_t dev, amdsensor_t sensor);
206 static int32_t amdtemp_gettemp(device_t dev, amdsensor_t sensor);
207 static int32_t amdtemp_gettemp15hm60h(device_t dev, amdsensor_t sensor);
208 static int32_t amdtemp_gettemp17h(device_t dev, amdsensor_t sensor);
209 static void amdtemp_probe_ccd_sensors17h(device_t dev, uint32_t model);
210 static void amdtemp_probe_ccd_sensors19h(device_t dev, uint32_t model);
211 static int amdtemp_sysctl(SYSCTL_HANDLER_ARGS);
213 static device_method_t amdtemp_methods[] = {
214 /* Device interface */
215 DEVMETHOD(device_identify, amdtemp_identify),
216 DEVMETHOD(device_probe, amdtemp_probe),
217 DEVMETHOD(device_attach, amdtemp_attach),
218 DEVMETHOD(device_detach, amdtemp_detach),
223 static driver_t amdtemp_driver = {
226 sizeof(struct amdtemp_softc),
229 static devclass_t amdtemp_devclass;
230 DRIVER_MODULE(amdtemp, hostb, amdtemp_driver, amdtemp_devclass, NULL, NULL);
231 MODULE_VERSION(amdtemp, 1);
232 MODULE_DEPEND(amdtemp, amdsmn, 1, 1, 1);
233 MODULE_PNP_INFO("U16:vendor;U16:device", pci, amdtemp, amdtemp_products,
234 nitems(amdtemp_products));
237 amdtemp_match(device_t dev, const struct amdtemp_product **product_out)
240 uint16_t vendor, devid;
242 vendor = pci_get_vendor(dev);
243 devid = pci_get_device(dev);
245 for (i = 0; i < nitems(amdtemp_products); i++) {
246 if (vendor == amdtemp_products[i].amdtemp_vendorid &&
247 devid == amdtemp_products[i].amdtemp_deviceid) {
248 if (product_out != NULL)
249 *product_out = &amdtemp_products[i];
257 amdtemp_identify(driver_t *driver, device_t parent)
261 /* Make sure we're not being doubly invoked. */
262 if (device_find_child(parent, "amdtemp", -1) != NULL)
265 if (amdtemp_match(parent, NULL)) {
266 child = device_add_child(parent, "amdtemp", -1);
268 device_printf(parent, "add amdtemp child failed\n");
273 amdtemp_probe(device_t dev)
275 uint32_t family, model;
277 if (resource_disabled("amdtemp", 0))
279 if (!amdtemp_match(device_get_parent(dev), NULL))
282 family = CPUID_TO_FAMILY(cpu_id);
283 model = CPUID_TO_MODEL(cpu_id);
287 if ((model == 0x04 && (cpu_id & CPUID_STEPPING) == 0) ||
288 (model == 0x05 && (cpu_id & CPUID_STEPPING) <= 1))
303 device_set_desc(dev, "AMD CPU On-Die Thermal Sensors");
305 return (BUS_PROBE_GENERIC);
309 amdtemp_attach(device_t dev)
313 const struct amdtemp_product *product;
314 struct amdtemp_softc *sc;
315 struct sysctl_ctx_list *sysctlctx;
316 struct sysctl_oid *sysctlnode;
317 uint32_t cpuid, family, model;
319 int erratum319, unit;
322 sc = device_get_softc(dev);
326 if (!amdtemp_match(device_get_parent(dev), &product))
330 family = CPUID_TO_FAMILY(cpuid);
331 model = CPUID_TO_MODEL(cpuid);
334 * This checks for the byzantine condition of running a heterogenous
335 * revision multi-socket system where the attach thread is potentially
336 * probing a remote socket's PCI device.
338 * Currently, such scenarios are unsupported on models using the SMN
339 * (because on those models, amdtemp(4) attaches to a different PCI
340 * device than the one that contains AMDTEMP_CPUID).
342 * The ancient 0x0F family of devices only supports this register from
345 if (product->amdtemp_has_cpuid && (family > 0x0f ||
346 (family == 0x0f && model >= 0x40))) {
347 cpuid = pci_read_config(device_get_parent(dev), AMDTEMP_CPUID,
349 family = CPUID_TO_FAMILY(cpuid);
350 model = CPUID_TO_MODEL(cpuid);
356 * Thermaltrip Status Register
358 * - ThermSenseCoreSel
360 * Revision F & G: 0 - Core1, 1 - Core0
361 * Other: 0 - Core0, 1 - Core1
365 * Revision G: bits 23-14
368 * XXX According to the BKDG, CurTmp, ThermSenseSel and
369 * ThermSenseCoreSel bits were introduced in Revision F
370 * but CurTmp seems working fine as early as Revision C.
371 * However, it is not clear whether ThermSenseSel and/or
372 * ThermSenseCoreSel work in undocumented cases as well.
373 * In fact, the Linux driver suggests it may not work but
374 * we just assume it does until we find otherwise.
376 * XXX According to Linux, CurTmp starts at -28C on
377 * Socket AM2 Revision G processors, which is not
378 * documented anywhere.
381 sc->sc_flags |= AMDTEMP_FLAG_CS_SWAP;
382 if (model >= 0x60 && model != 0xc1) {
383 do_cpuid(0x80000001, regs);
384 bid = (regs[1] >> 9) & 0x1f;
386 case 0x68: /* Socket S1g1 */
390 case 0x6b: /* Socket AM2 and ASB1 (2 cores) */
391 if (bid != 0x0b && bid != 0x0c)
393 AMDTEMP_FLAG_ALT_OFFSET;
395 case 0x6f: /* Socket AM2 and ASB1 (1 core) */
397 if (bid != 0x07 && bid != 0x09 &&
400 AMDTEMP_FLAG_ALT_OFFSET;
403 sc->sc_flags |= AMDTEMP_FLAG_ALT_OFFSET;
405 sc->sc_flags |= AMDTEMP_FLAG_CT_10BIT;
409 * There are two sensors per core.
413 sc->sc_gettemp = amdtemp_gettemp0f;
417 * Erratum 319 Inaccurate Temperature Measurement
419 * http://support.amd.com/us/Processor_TechDocs/41322.pdf
421 do_cpuid(0x80000001, regs);
422 switch ((regs[1] >> 28) & 0xf) {
423 case 0: /* Socket F */
426 case 1: /* Socket AM2+ or AM3 */
427 if ((pci_cfgregread(pci_get_bus(dev),
428 pci_get_slot(dev), 2, AMDTEMP_DRAM_CONF_HIGH, 2) &
429 AMDTEMP_DRAM_MODE_DDR3) != 0 || model > 0x04 ||
430 (model == 0x04 && (cpuid & CPUID_STEPPING) >= 3))
432 /* XXX 00100F42h (RB-C2) exists in both formats. */
444 * Some later (60h+) models of family 15h use a similar SMN
445 * network as family 17h. (However, the register index differs
446 * from 17h and the decoding matches other 10h-15h models,
447 * which differ from 17h.)
449 if (family == 0x15 && model >= 0x60) {
450 sc->sc_gettemp = amdtemp_gettemp15hm60h;
453 sc->sc_gettemp = amdtemp_gettemp;
458 sc->sc_gettemp = amdtemp_gettemp17h;
462 device_printf(dev, "Bogus family 0x%x\n", family);
467 sc->sc_smn = device_find_child(
468 device_get_parent(dev), "amdsmn", -1);
469 if (sc->sc_smn == NULL) {
471 device_printf(dev, "No SMN device found\n");
476 /* Find number of cores per package. */
477 sc->sc_ncores = (amd_feature2 & AMDID2_CMP) != 0 ?
478 (cpu_procinfo2 & AMDID_CMP_CORES) + 1 : 1;
479 if (sc->sc_ncores > MAXCPU)
484 "Erratum 319: temperature measurement may be inaccurate\n");
486 device_printf(dev, "Found %d cores and %d sensors.\n",
488 sc->sc_ntemps > 1 ? sc->sc_ntemps * sc->sc_ncores : 1);
491 * dev.amdtemp.N tree.
493 unit = device_get_unit(dev);
494 snprintf(tn, sizeof(tn), "dev.amdtemp.%d.sensor_offset", unit);
495 TUNABLE_INT_FETCH(tn, &sc->sc_offset);
497 sysctlctx = device_get_sysctl_ctx(dev);
498 SYSCTL_ADD_INT(sysctlctx,
499 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
500 "sensor_offset", CTLFLAG_RW, &sc->sc_offset, 0,
501 "Temperature sensor offset");
502 sysctlnode = SYSCTL_ADD_NODE(sysctlctx,
503 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
504 "core0", CTLFLAG_RD | CTLFLAG_MPSAFE, 0, "Core 0");
506 SYSCTL_ADD_PROC(sysctlctx,
507 SYSCTL_CHILDREN(sysctlnode),
509 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_NEEDGIANT,
510 dev, CORE0_SENSOR0, amdtemp_sysctl, "IK",
511 "Core 0 / Sensor 0 temperature");
514 amdtemp_probe_ccd_sensors17h(dev, model);
515 else if (family == 0x19)
516 amdtemp_probe_ccd_sensors19h(dev, model);
517 else if (sc->sc_ntemps > 1) {
518 SYSCTL_ADD_PROC(sysctlctx,
519 SYSCTL_CHILDREN(sysctlnode),
521 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_NEEDGIANT,
522 dev, CORE0_SENSOR1, amdtemp_sysctl, "IK",
523 "Core 0 / Sensor 1 temperature");
525 if (sc->sc_ncores > 1) {
526 sysctlnode = SYSCTL_ADD_NODE(sysctlctx,
527 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
528 OID_AUTO, "core1", CTLFLAG_RD | CTLFLAG_MPSAFE,
531 SYSCTL_ADD_PROC(sysctlctx,
532 SYSCTL_CHILDREN(sysctlnode),
534 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_NEEDGIANT,
535 dev, CORE1_SENSOR0, amdtemp_sysctl, "IK",
536 "Core 1 / Sensor 0 temperature");
538 SYSCTL_ADD_PROC(sysctlctx,
539 SYSCTL_CHILDREN(sysctlnode),
541 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_NEEDGIANT,
542 dev, CORE1_SENSOR1, amdtemp_sysctl, "IK",
543 "Core 1 / Sensor 1 temperature");
548 * Try to create dev.cpu sysctl entries and setup intrhook function.
549 * This is needed because the cpu driver may be loaded late on boot,
552 amdtemp_intrhook(dev);
553 sc->sc_ich.ich_func = amdtemp_intrhook;
554 sc->sc_ich.ich_arg = dev;
555 if (config_intrhook_establish(&sc->sc_ich) != 0) {
556 device_printf(dev, "config_intrhook_establish failed!\n");
564 amdtemp_intrhook(void *arg)
566 struct amdtemp_softc *sc;
567 struct sysctl_ctx_list *sysctlctx;
568 device_t dev = (device_t)arg;
569 device_t acpi, cpu, nexus;
573 sc = device_get_softc(dev);
576 * dev.cpu.N.temperature.
578 nexus = device_find_child(root_bus, "nexus", 0);
579 acpi = device_find_child(nexus, "acpi", 0);
581 for (i = 0; i < sc->sc_ncores; i++) {
582 if (sc->sc_sysctl_cpu[i] != NULL)
584 cpu = device_find_child(acpi, "cpu",
585 device_get_unit(dev) * sc->sc_ncores + i);
587 sysctlctx = device_get_sysctl_ctx(cpu);
589 sensor = sc->sc_ntemps > 1 ?
590 (i == 0 ? CORE0 : CORE1) : CORE0_SENSOR0;
591 sc->sc_sysctl_cpu[i] = SYSCTL_ADD_PROC(sysctlctx,
592 SYSCTL_CHILDREN(device_get_sysctl_tree(cpu)),
593 OID_AUTO, "temperature",
594 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_NEEDGIANT,
595 dev, sensor, amdtemp_sysctl, "IK",
596 "Current temparature");
599 if (sc->sc_ich.ich_arg != NULL)
600 config_intrhook_disestablish(&sc->sc_ich);
604 amdtemp_detach(device_t dev)
606 struct amdtemp_softc *sc = device_get_softc(dev);
609 for (i = 0; i < sc->sc_ncores; i++)
610 if (sc->sc_sysctl_cpu[i] != NULL)
611 sysctl_remove_oid(sc->sc_sysctl_cpu[i], 1, 0);
613 /* NewBus removes the dev.amdtemp.N tree by itself. */
619 amdtemp_sysctl(SYSCTL_HANDLER_ARGS)
621 device_t dev = (device_t)arg1;
622 struct amdtemp_softc *sc = device_get_softc(dev);
623 amdsensor_t sensor = (amdsensor_t)arg2;
624 int32_t auxtemp[2], temp;
629 auxtemp[0] = sc->sc_gettemp(dev, CORE0_SENSOR0);
630 auxtemp[1] = sc->sc_gettemp(dev, CORE0_SENSOR1);
631 temp = imax(auxtemp[0], auxtemp[1]);
634 auxtemp[0] = sc->sc_gettemp(dev, CORE1_SENSOR0);
635 auxtemp[1] = sc->sc_gettemp(dev, CORE1_SENSOR1);
636 temp = imax(auxtemp[0], auxtemp[1]);
639 temp = sc->sc_gettemp(dev, sensor);
642 error = sysctl_handle_int(oidp, &temp, 0, req);
647 #define AMDTEMP_ZERO_C_TO_K 2731
650 amdtemp_gettemp0f(device_t dev, amdsensor_t sensor)
652 struct amdtemp_softc *sc = device_get_softc(dev);
653 uint32_t mask, offset, temp;
655 /* Set Sensor/Core selector. */
656 temp = pci_read_config(dev, AMDTEMP_THERMTP_STAT, 1);
657 temp &= ~(AMDTEMP_TTSR_SELCORE | AMDTEMP_TTSR_SELSENSOR);
660 temp |= AMDTEMP_TTSR_SELSENSOR;
664 if ((sc->sc_flags & AMDTEMP_FLAG_CS_SWAP) != 0)
665 temp |= AMDTEMP_TTSR_SELCORE;
668 temp |= AMDTEMP_TTSR_SELSENSOR;
672 if ((sc->sc_flags & AMDTEMP_FLAG_CS_SWAP) == 0)
673 temp |= AMDTEMP_TTSR_SELCORE;
676 __assert_unreachable();
678 pci_write_config(dev, AMDTEMP_THERMTP_STAT, temp, 1);
680 mask = (sc->sc_flags & AMDTEMP_FLAG_CT_10BIT) != 0 ? 0x3ff : 0x3fc;
681 offset = (sc->sc_flags & AMDTEMP_FLAG_ALT_OFFSET) != 0 ? 28 : 49;
682 temp = pci_read_config(dev, AMDTEMP_THERMTP_STAT, 4);
683 temp = ((temp >> 14) & mask) * 5 / 2;
684 temp += AMDTEMP_ZERO_C_TO_K + (sc->sc_offset - offset) * 10;
690 amdtemp_decode_fam10h_to_17h(int32_t sc_offset, uint32_t val, bool minus49)
694 /* Convert raw register subfield units (0.125C) to units of 0.1C. */
695 temp = (val & AMDTEMP_REPTMP10H_CURTMP_MASK) * 5 / 4;
698 temp -= AMDTEMP_CURTMP_RANGE_ADJUST;
700 temp += AMDTEMP_ZERO_C_TO_K + sc_offset * 10;
705 amdtemp_decode_fam10h_to_16h(int32_t sc_offset, uint32_t val)
710 * On Family 15h and higher, if CurTmpTjSel is 11b, the range is
711 * adjusted down by 49.0 degrees Celsius. (This adjustment is not
712 * documented in BKDGs prior to family 15h model 00h.)
714 minus49 = (CPUID_TO_FAMILY(cpu_id) >= 0x15 &&
715 ((val >> AMDTEMP_REPTMP10H_TJSEL_SHIFT) &
716 AMDTEMP_REPTMP10H_TJSEL_MASK) == 0x3);
718 return (amdtemp_decode_fam10h_to_17h(sc_offset,
719 val >> AMDTEMP_REPTMP10H_CURTMP_SHIFT, minus49));
723 amdtemp_decode_fam17h_tctl(int32_t sc_offset, uint32_t val)
727 minus49 = ((val & AMDTEMP_17H_CUR_TMP_RANGE_SEL) != 0);
728 return (amdtemp_decode_fam10h_to_17h(sc_offset,
729 val >> AMDTEMP_REPTMP10H_CURTMP_SHIFT, minus49));
733 amdtemp_gettemp(device_t dev, amdsensor_t sensor)
735 struct amdtemp_softc *sc = device_get_softc(dev);
738 temp = pci_read_config(dev, AMDTEMP_REPTMP_CTRL, 4);
739 return (amdtemp_decode_fam10h_to_16h(sc->sc_offset, temp));
743 amdtemp_gettemp15hm60h(device_t dev, amdsensor_t sensor)
745 struct amdtemp_softc *sc = device_get_softc(dev);
749 error = amdsmn_read(sc->sc_smn, AMDTEMP_15H_M60H_REPTMP_CTRL, &val);
750 KASSERT(error == 0, ("amdsmn_read"));
751 return (amdtemp_decode_fam10h_to_16h(sc->sc_offset, val));
755 amdtemp_gettemp17h(device_t dev, amdsensor_t sensor)
757 struct amdtemp_softc *sc = device_get_softc(dev);
764 error = amdsmn_read(sc->sc_smn, AMDTEMP_17H_CUR_TMP, &val);
765 KASSERT(error == 0, ("amdsmn_read"));
766 return (amdtemp_decode_fam17h_tctl(sc->sc_offset, val));
767 case CCD_BASE ... CCD_MAX:
769 error = amdsmn_read(sc->sc_smn, AMDTEMP_17H_CCD_TMP_BASE +
770 (((int)sensor - CCD_BASE) * sizeof(val)), &val);
771 KASSERT(error == 0, ("amdsmn_read2"));
772 KASSERT((val & AMDTEMP_17H_CCD_TMP_VALID) != 0,
773 ("sensor %d: not valid", (int)sensor));
774 return (amdtemp_decode_fam10h_to_17h(sc->sc_offset, val, true));
776 __assert_unreachable();
781 amdtemp_probe_ccd_sensors(device_t dev, uint32_t maxreg)
783 char sensor_name[16], sensor_descr[32];
784 struct amdtemp_softc *sc;
788 sc = device_get_softc(dev);
789 for (i = 0; i < maxreg; i++) {
790 error = amdsmn_read(sc->sc_smn, AMDTEMP_17H_CCD_TMP_BASE +
791 (i * sizeof(val)), &val);
794 if ((val & AMDTEMP_17H_CCD_TMP_VALID) == 0)
797 snprintf(sensor_name, sizeof(sensor_name), "ccd%u", i);
798 snprintf(sensor_descr, sizeof(sensor_descr),
799 "CCD %u temperature (Tccd%u)", i, i);
801 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
802 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
803 sensor_name, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE,
804 dev, CCD_BASE + i, amdtemp_sysctl, "IK", sensor_descr);
809 amdtemp_probe_ccd_sensors17h(device_t dev, uint32_t model)
814 case 0x00 ... 0x2f: /* Zen1, Zen+ */
817 case 0x30 ... 0x3f: /* Zen2 TR (Castle Peak)/EPYC (Rome) */
818 case 0x60 ... 0x7f: /* Zen2 Ryzen (Renoir APU, Matisse) */
819 case 0x90 ... 0x9f: /* Zen2 Ryzen (Van Gogh APU) */
821 _Static_assert((int)NUM_CCDS >= 8, "");
825 "Unrecognized Family 17h Model: %02xh\n", model);
829 amdtemp_probe_ccd_sensors(dev, maxreg);
833 amdtemp_probe_ccd_sensors19h(device_t dev, uint32_t model)
838 case 0x00 ... 0x0f: /* Zen3 EPYC "Milan" */
839 case 0x20 ... 0x2f: /* Zen3 Ryzen "Vermeer" */
841 _Static_assert((int)NUM_CCDS >= 8, "");
845 "Unrecognized Family 19h Model: %02xh\n", model);
849 amdtemp_probe_ccd_sensors(dev, maxreg);