18  * Intel Platform Controller Hub (PCH) Thermal Sensor Driver
28  * thermal sensor which gives us the ability to read the temperature sensor that
36  *  - Intel 8 Series PCH
37  *  - Intel 9 Series and Broadwell Mobile Low Power PCH
38  *  - Intel C610 Series and X99 PCH
39  *  - Intel C620 Series PCH
40  *  - Intel 100 Series PCH
41  *  - Intel 200 Series and Z730 PCH
42  *  - Intel Sunrise Point-LP (Kaby Lake-U) PCH
43  *  - Intel Cannon Lake (Whiskey Lake-U) PCH
44  *  - Intel 300 Series and C240 Chipset
45  *  - Intel 400 Series and On-Package PCH
50  *  - Intel 5 Series and Xeon 3400 PCH
51  *  - Intel 6 Series PCH
52  *  - Intel 7 Series PCH
53  *  - Intel C600 Series and X79 PCH
67 #include <sys/sensors.h>
85  * 8-bits. The resolution and offset are described above.
91  * Thermal Sensor Enable and Lock (TSEL) register. This register is a byte wide
92  * and has two bits that we care about. The ETS bit, enable thermal sensor,
94  * locked which is the PLDB, Policy Lock-Down Bit, bit. Which restricts
102  * Threshold registers for the thermal sensors. These indicate the catastrophic,
131 	if (!DDI_FM_ACC_ERR_CAP(pch->pcht_fm_caps)) {  in pchtemp_read_check()
135 	ddi_fm_acc_err_get(pch->pcht_handle, &de, DDI_FME_VERSION);  in pchtemp_read_check()
136 	ddi_fm_acc_err_clear(pch->pcht_handle, DDI_FME_VERSION);  in pchtemp_read_check()
147 	mutex_enter(&pch->pcht_mutex);  in pchtemp_read()
149 	temp = ddi_get16(pch->pcht_handle,  in pchtemp_read()
150 	    (uint16_t *)((uintptr_t)pch->pcht_base + PCHTEMP_REG_TEMP));  in pchtemp_read()
151 	tsel = ddi_get8(pch->pcht_handle,  in pchtemp_read()
152 	    (uint8_t *)((uintptr_t)pch->pcht_base + PCHTEMP_REG_TSEL));  in pchtemp_read()
153 	ctt = ddi_get16(pch->pcht_handle,  in pchtemp_read()
154 	    (uint16_t *)((uintptr_t)pch->pcht_base + PCHTEMP_REG_CTT));  in pchtemp_read()
155 	tahv = ddi_get16(pch->pcht_handle,  in pchtemp_read()
156 	    (uint16_t *)((uintptr_t)pch->pcht_base + PCHTEMP_REG_TAHV));  in pchtemp_read()
157 	talv = ddi_get16(pch->pcht_handle,  in pchtemp_read()
158 	    (uint16_t *)((uintptr_t)pch->pcht_base + PCHTEMP_REG_TALV));  in pchtemp_read()
161 		mutex_exit(&pch->pcht_mutex);  in pchtemp_read()
162 		dev_err(pch->pcht_dip, CE_WARN, "failed to read temperature "  in pchtemp_read()
167 	pch->pcht_temp_raw = temp;  in pchtemp_read()
168 	pch->pcht_tsel_raw = tsel;  in pchtemp_read()
169 	pch->pcht_ctt_raw = ctt;  in pchtemp_read()
170 	pch->pcht_tahv_raw = tahv;  in pchtemp_read()
171 	pch->pcht_talv_raw = talv;  in pchtemp_read()
174 		mutex_exit(&pch->pcht_mutex);  in pchtemp_read()
178 	pch->pcht_temp = (temp & PCHTEMP_REG_TEMP_TSR) - PCHTEMP_TEMP_OFFSET;  in pchtemp_read()
179 	scalar->sis_unit = SENSOR_UNIT_CELSIUS;  in pchtemp_read()
180 	scalar->sis_gran = PCHTEMP_TEMP_RESOLUTION;  in pchtemp_read()
181 	scalar->sis_value = pch->pcht_temp;  in pchtemp_read()
182 	mutex_exit(&pch->pcht_mutex);  in pchtemp_read()
197 	ASSERT3P(pch->pcht_dip, !=, NULL);  in pchtemp_cleanup()
198 	inst = ddi_get_instance(pch->pcht_dip);  in pchtemp_cleanup()
200 	(void) ksensor_remove(pch->pcht_dip, KSENSOR_ALL_IDS);  in pchtemp_cleanup()
202 	if (pch->pcht_handle != NULL) {  in pchtemp_cleanup()
203 		ddi_regs_map_free(&pch->pcht_handle);  in pchtemp_cleanup()
206 	if (pch->pcht_fm_caps != DDI_FM_NOT_CAPABLE) {  in pchtemp_cleanup()
207 		ddi_fm_fini(pch->pcht_dip);  in pchtemp_cleanup()
210 	mutex_destroy(&pch->pcht_mutex);  in pchtemp_cleanup()
246 	pch->pcht_dip = dip;  in pchtemp_attach()
248 	pch->pcht_fm_caps = DDI_FM_ACCCHK_CAPABLE;  in pchtemp_attach()
249 	ddi_fm_init(dip, &pch->pcht_fm_caps, &iblk);  in pchtemp_attach()
251 	mutex_init(&pch->pcht_mutex, NULL, MUTEX_DRIVER, NULL);  in pchtemp_attach()
264 	if (DDI_FM_ACC_ERR_CAP(pch->pcht_fm_caps)) {  in pchtemp_attach()
270 	if ((ret = ddi_regs_map_setup(dip, PCHTEMP_RNUMBER, &pch->pcht_base,  in pchtemp_attach()
271 	    0, memsize, &da, &pch->pcht_handle)) != DDI_SUCCESS) {  in pchtemp_attach()
283 	if ((ret = ksensor_create(pch->pcht_dip, &pchtemp_temp_ops, pch, name,  in pchtemp_attach()
284 	    DDI_NT_SENSOR_TEMP_PCH, &pch->pcht_ksensor)) != 0) {  in pchtemp_attach()
337 	.drv_linkinfo = "Intel PCH Thermal Sensor",