1dc90e123SRobert Mustacchi /*
2dc90e123SRobert Mustacchi * This file and its contents are supplied under the terms of the
3dc90e123SRobert Mustacchi * Common Development and Distribution License ("CDDL"), version 1.0.
4dc90e123SRobert Mustacchi * You may only use this file in accordance with the terms of version
5dc90e123SRobert Mustacchi * 1.0 of the CDDL.
6dc90e123SRobert Mustacchi *
7dc90e123SRobert Mustacchi * A full copy of the text of the CDDL should have accompanied this
8dc90e123SRobert Mustacchi * source. A copy of the CDDL is also available via the Internet at
9dc90e123SRobert Mustacchi * http://www.illumos.org/license/CDDL.
10dc90e123SRobert Mustacchi */
11dc90e123SRobert Mustacchi
12dc90e123SRobert Mustacchi /*
13dc90e123SRobert Mustacchi * Copyright 2019 Joyent, Inc.
14c8be5715SRobert Mustacchi * Copyright 2021 Oxide Computer Company
15dc90e123SRobert Mustacchi */
16dc90e123SRobert Mustacchi
17dc90e123SRobert Mustacchi /*
18dc90e123SRobert Mustacchi * Intel Platform Controller Hub (PCH) Thermal Sensor Driver
19dc90e123SRobert Mustacchi *
20dc90e123SRobert Mustacchi * The Intel PCH is a chip that was introduced around the Nehalem generation
21dc90e123SRobert Mustacchi * that provides many services for the broader system on a discrete chip from
22dc90e123SRobert Mustacchi * the CPU. While it existed prior to the Nehalem generation, it was previously
23dc90e123SRobert Mustacchi * two discrete chips called the Northbridge and Southbridge. Sometimes this
24dc90e123SRobert Mustacchi * device is also called a 'chipset'.
25dc90e123SRobert Mustacchi *
26dc90e123SRobert Mustacchi * The PCH contains everything from a USB controller, to an AHCI controller, to
27dc90e123SRobert Mustacchi * clocks, the Intel Management Engine, and more. Relevant to this driver is its
28dc90e123SRobert Mustacchi * thermal sensor which gives us the ability to read the temperature sensor that
29dc90e123SRobert Mustacchi * is embedded in the PCH.
30dc90e123SRobert Mustacchi *
31dc90e123SRobert Mustacchi * The format of this sensor varies based on the generation of the chipset. The
32dc90e123SRobert Mustacchi * current driver supports the following chipsets organized by datasheet, which
33dc90e123SRobert Mustacchi * corresponds with a change in format that was introduced in the Haswell
34dc90e123SRobert Mustacchi * generation:
35dc90e123SRobert Mustacchi *
36dc90e123SRobert Mustacchi * - Intel 8 Series PCH
37c8be5715SRobert Mustacchi * - Intel 9 Series and Broadwell Mobile Low Power PCH
38dc90e123SRobert Mustacchi * - Intel C610 Series and X99 PCH
39dc90e123SRobert Mustacchi * - Intel C620 Series PCH
40dc90e123SRobert Mustacchi * - Intel 100 Series PCH
41dc90e123SRobert Mustacchi * - Intel 200 Series and Z730 PCH
42dc90e123SRobert Mustacchi * - Intel Sunrise Point-LP (Kaby Lake-U) PCH
432c4824dbSRobert Mustacchi * - Intel Cannon Lake (Whiskey Lake-U) PCH
44dc90e123SRobert Mustacchi * - Intel 300 Series and C240 Chipset
45c8be5715SRobert Mustacchi * - Intel 400 Series and On-Package PCH
46dc90e123SRobert Mustacchi *
47dc90e123SRobert Mustacchi * The following chipsets use a different format and are not currently
48dc90e123SRobert Mustacchi * supported:
49dc90e123SRobert Mustacchi *
50dc90e123SRobert Mustacchi * - Intel 5 Series and Xeon 3400 PCH
51dc90e123SRobert Mustacchi * - Intel 6 Series PCH
52dc90e123SRobert Mustacchi * - Intel 7 Series PCH
53dc90e123SRobert Mustacchi * - Intel C600 Series and X79 PCH
54dc90e123SRobert Mustacchi */
55dc90e123SRobert Mustacchi
56dc90e123SRobert Mustacchi #include <sys/modctl.h>
57dc90e123SRobert Mustacchi #include <sys/conf.h>
58dc90e123SRobert Mustacchi #include <sys/devops.h>
59dc90e123SRobert Mustacchi #include <sys/types.h>
60dc90e123SRobert Mustacchi #include <sys/file.h>
61dc90e123SRobert Mustacchi #include <sys/open.h>
62dc90e123SRobert Mustacchi #include <sys/cred.h>
63dc90e123SRobert Mustacchi #include <sys/ddi.h>
64dc90e123SRobert Mustacchi #include <sys/sunddi.h>
65dc90e123SRobert Mustacchi #include <sys/cmn_err.h>
66dc90e123SRobert Mustacchi #include <sys/stat.h>
67dc90e123SRobert Mustacchi #include <sys/sensors.h>
68dc90e123SRobert Mustacchi
69dc90e123SRobert Mustacchi /*
70dc90e123SRobert Mustacchi * In all cases the data we care about is in the first PCI bar, bar 0. Per
71*bbf21555SRichard Lowe * pci(5)/pcie(5), this is always going to be register number 1.
72dc90e123SRobert Mustacchi */
73dc90e123SRobert Mustacchi #define PCHTEMP_RNUMBER 1
74dc90e123SRobert Mustacchi
75dc90e123SRobert Mustacchi /*
76dc90e123SRobert Mustacchi * The PCH Temperature Sensor has a resolution of 1/2 a degree. This is a
77dc90e123SRobert Mustacchi * resolution of 2 in our parlance. The register reads 50 C higher than it is.
78dc90e123SRobert Mustacchi * Therefore our offset is 50 shifted over by one.
79dc90e123SRobert Mustacchi */
80dc90e123SRobert Mustacchi #define PCHTEMP_TEMP_RESOLUTION 2
81dc90e123SRobert Mustacchi #define PCHTEMP_TEMP_OFFSET (50 << 1)
82dc90e123SRobert Mustacchi
83dc90e123SRobert Mustacchi /*
84dc90e123SRobert Mustacchi * This register offset has the temperature that we want to read in the lower
85dc90e123SRobert Mustacchi * 8-bits. The resolution and offset are described above.
86dc90e123SRobert Mustacchi */
87dc90e123SRobert Mustacchi #define PCHTEMP_REG_TEMP 0x00
88dc90e123SRobert Mustacchi #define PCHTEMP_REG_TEMP_TSR 0x00ff
89dc90e123SRobert Mustacchi
90dc90e123SRobert Mustacchi /*
91dc90e123SRobert Mustacchi * Thermal Sensor Enable and Lock (TSEL) register. This register is a byte wide
92dc90e123SRobert Mustacchi * and has two bits that we care about. The ETS bit, enable thermal sensor,
93dc90e123SRobert Mustacchi * indicates whether or not the sensor is enabled. The control for this can be
94dc90e123SRobert Mustacchi * locked which is the PLDB, Policy Lock-Down Bit, bit. Which restricts
95dc90e123SRobert Mustacchi * additional control of this register.
96dc90e123SRobert Mustacchi */
97dc90e123SRobert Mustacchi #define PCHTEMP_REG_TSEL 0x08
98dc90e123SRobert Mustacchi #define PCHTEMP_REG_TSEL_ETS 0x01
99dc90e123SRobert Mustacchi #define PCHTEMP_REG_TSEL_PLDB 0x80
100dc90e123SRobert Mustacchi
101dc90e123SRobert Mustacchi /*
102dc90e123SRobert Mustacchi * Threshold registers for the thermal sensors. These indicate the catastrophic,
103dc90e123SRobert Mustacchi * the high alert threshold, and the low alert threshold respectively.
104dc90e123SRobert Mustacchi */
105dc90e123SRobert Mustacchi #define PCHTEMP_REG_CTT 0x10
106dc90e123SRobert Mustacchi #define PCHTEMP_REG_TAHV 0x14
107dc90e123SRobert Mustacchi #define PCHTEMP_REG_TALV 0x18
108dc90e123SRobert Mustacchi
109dc90e123SRobert Mustacchi typedef struct pchtemp {
110dc90e123SRobert Mustacchi dev_info_t *pcht_dip;
111dc90e123SRobert Mustacchi int pcht_fm_caps;
112dc90e123SRobert Mustacchi caddr_t pcht_base;
113dc90e123SRobert Mustacchi ddi_acc_handle_t pcht_handle;
11402674280SRobert Mustacchi id_t pcht_ksensor;
115dc90e123SRobert Mustacchi kmutex_t pcht_mutex; /* Protects members below */
116dc90e123SRobert Mustacchi uint16_t pcht_temp_raw;
117dc90e123SRobert Mustacchi uint8_t pcht_tsel_raw;
118dc90e123SRobert Mustacchi uint16_t pcht_ctt_raw;
119dc90e123SRobert Mustacchi uint16_t pcht_tahv_raw;
120dc90e123SRobert Mustacchi uint16_t pcht_talv_raw;
121dc90e123SRobert Mustacchi int64_t pcht_temp;
122dc90e123SRobert Mustacchi } pchtemp_t;
123dc90e123SRobert Mustacchi
124dc90e123SRobert Mustacchi void *pchtemp_state;
125dc90e123SRobert Mustacchi
126dc90e123SRobert Mustacchi static int
pchtemp_read_check(pchtemp_t * pch)127dc90e123SRobert Mustacchi pchtemp_read_check(pchtemp_t *pch)
128dc90e123SRobert Mustacchi {
129dc90e123SRobert Mustacchi ddi_fm_error_t de;
130dc90e123SRobert Mustacchi
131dc90e123SRobert Mustacchi if (!DDI_FM_ACC_ERR_CAP(pch->pcht_fm_caps)) {
132dc90e123SRobert Mustacchi return (DDI_FM_OK);
133dc90e123SRobert Mustacchi }
134dc90e123SRobert Mustacchi
135dc90e123SRobert Mustacchi ddi_fm_acc_err_get(pch->pcht_handle, &de, DDI_FME_VERSION);
136dc90e123SRobert Mustacchi ddi_fm_acc_err_clear(pch->pcht_handle, DDI_FME_VERSION);
137dc90e123SRobert Mustacchi return (de.fme_status);
138dc90e123SRobert Mustacchi }
139dc90e123SRobert Mustacchi
140dc90e123SRobert Mustacchi static int
pchtemp_read(void * arg,sensor_ioctl_scalar_t * scalar)1411045e13aSRobert Mustacchi pchtemp_read(void *arg, sensor_ioctl_scalar_t *scalar)
142dc90e123SRobert Mustacchi {
143dc90e123SRobert Mustacchi uint16_t temp, ctt, tahv, talv;
144dc90e123SRobert Mustacchi uint8_t tsel;
14502674280SRobert Mustacchi pchtemp_t *pch = arg;
146dc90e123SRobert Mustacchi
14702674280SRobert Mustacchi mutex_enter(&pch->pcht_mutex);
148dc90e123SRobert Mustacchi
149dc90e123SRobert Mustacchi temp = ddi_get16(pch->pcht_handle,
150dc90e123SRobert Mustacchi (uint16_t *)((uintptr_t)pch->pcht_base + PCHTEMP_REG_TEMP));
151dc90e123SRobert Mustacchi tsel = ddi_get8(pch->pcht_handle,
152dc90e123SRobert Mustacchi (uint8_t *)((uintptr_t)pch->pcht_base + PCHTEMP_REG_TSEL));
153dc90e123SRobert Mustacchi ctt = ddi_get16(pch->pcht_handle,
154dc90e123SRobert Mustacchi (uint16_t *)((uintptr_t)pch->pcht_base + PCHTEMP_REG_CTT));
155dc90e123SRobert Mustacchi tahv = ddi_get16(pch->pcht_handle,
156dc90e123SRobert Mustacchi (uint16_t *)((uintptr_t)pch->pcht_base + PCHTEMP_REG_TAHV));
157dc90e123SRobert Mustacchi talv = ddi_get16(pch->pcht_handle,
158dc90e123SRobert Mustacchi (uint16_t *)((uintptr_t)pch->pcht_base + PCHTEMP_REG_TALV));
159dc90e123SRobert Mustacchi
160dc90e123SRobert Mustacchi if (pchtemp_read_check(pch) != DDI_FM_OK) {
16102674280SRobert Mustacchi mutex_exit(&pch->pcht_mutex);
162dc90e123SRobert Mustacchi dev_err(pch->pcht_dip, CE_WARN, "failed to read temperature "
163dc90e123SRobert Mustacchi "data due to FM device error");
164dc90e123SRobert Mustacchi return (EIO);
165dc90e123SRobert Mustacchi }
166dc90e123SRobert Mustacchi
167dc90e123SRobert Mustacchi pch->pcht_temp_raw = temp;
168dc90e123SRobert Mustacchi pch->pcht_tsel_raw = tsel;
169dc90e123SRobert Mustacchi pch->pcht_ctt_raw = ctt;
170dc90e123SRobert Mustacchi pch->pcht_tahv_raw = tahv;
171dc90e123SRobert Mustacchi pch->pcht_talv_raw = talv;
172dc90e123SRobert Mustacchi
173dc90e123SRobert Mustacchi if ((tsel & PCHTEMP_REG_TSEL_ETS) == 0) {
17402674280SRobert Mustacchi mutex_exit(&pch->pcht_mutex);
175dc90e123SRobert Mustacchi return (ENXIO);
176dc90e123SRobert Mustacchi }
177dc90e123SRobert Mustacchi
178dc90e123SRobert Mustacchi pch->pcht_temp = (temp & PCHTEMP_REG_TEMP_TSR) - PCHTEMP_TEMP_OFFSET;
1791045e13aSRobert Mustacchi scalar->sis_unit = SENSOR_UNIT_CELSIUS;
1801045e13aSRobert Mustacchi scalar->sis_gran = PCHTEMP_TEMP_RESOLUTION;
1811045e13aSRobert Mustacchi scalar->sis_value = pch->pcht_temp;
182dc90e123SRobert Mustacchi mutex_exit(&pch->pcht_mutex);
183dc90e123SRobert Mustacchi
184dc90e123SRobert Mustacchi return (0);
185dc90e123SRobert Mustacchi }
186dc90e123SRobert Mustacchi
18702674280SRobert Mustacchi static const ksensor_ops_t pchtemp_temp_ops = {
18802674280SRobert Mustacchi .kso_kind = ksensor_kind_temperature,
1891045e13aSRobert Mustacchi .kso_scalar = pchtemp_read
19002674280SRobert Mustacchi };
191dc90e123SRobert Mustacchi
192dc90e123SRobert Mustacchi static void
pchtemp_cleanup(pchtemp_t * pch)193dc90e123SRobert Mustacchi pchtemp_cleanup(pchtemp_t *pch)
194dc90e123SRobert Mustacchi {
195dc90e123SRobert Mustacchi int inst;
196dc90e123SRobert Mustacchi
197dc90e123SRobert Mustacchi ASSERT3P(pch->pcht_dip, !=, NULL);
198dc90e123SRobert Mustacchi inst = ddi_get_instance(pch->pcht_dip);
199dc90e123SRobert Mustacchi
20002674280SRobert Mustacchi (void) ksensor_remove(pch->pcht_dip, KSENSOR_ALL_IDS);
201dc90e123SRobert Mustacchi
202dc90e123SRobert Mustacchi if (pch->pcht_handle != NULL) {
203dc90e123SRobert Mustacchi ddi_regs_map_free(&pch->pcht_handle);
204dc90e123SRobert Mustacchi }
205dc90e123SRobert Mustacchi
206dc90e123SRobert Mustacchi if (pch->pcht_fm_caps != DDI_FM_NOT_CAPABLE) {
207dc90e123SRobert Mustacchi ddi_fm_fini(pch->pcht_dip);
208dc90e123SRobert Mustacchi }
209dc90e123SRobert Mustacchi
210dc90e123SRobert Mustacchi mutex_destroy(&pch->pcht_mutex);
211dc90e123SRobert Mustacchi ddi_soft_state_free(pchtemp_state, inst);
212dc90e123SRobert Mustacchi }
213dc90e123SRobert Mustacchi
214dc90e123SRobert Mustacchi static int
pchtemp_attach(dev_info_t * dip,ddi_attach_cmd_t cmd)215dc90e123SRobert Mustacchi pchtemp_attach(dev_info_t *dip, ddi_attach_cmd_t cmd)
216dc90e123SRobert Mustacchi {
217dc90e123SRobert Mustacchi int inst, ret;
218dc90e123SRobert Mustacchi pchtemp_t *pch;
219dc90e123SRobert Mustacchi off_t memsize;
220dc90e123SRobert Mustacchi ddi_device_acc_attr_t da;
221dc90e123SRobert Mustacchi ddi_iblock_cookie_t iblk;
222dc90e123SRobert Mustacchi char name[1024];
223dc90e123SRobert Mustacchi
224dc90e123SRobert Mustacchi switch (cmd) {
225dc90e123SRobert Mustacchi case DDI_RESUME:
226dc90e123SRobert Mustacchi return (DDI_SUCCESS);
227dc90e123SRobert Mustacchi case DDI_ATTACH:
228dc90e123SRobert Mustacchi break;
229dc90e123SRobert Mustacchi default:
230dc90e123SRobert Mustacchi return (DDI_FAILURE);
231dc90e123SRobert Mustacchi }
232dc90e123SRobert Mustacchi
233dc90e123SRobert Mustacchi inst = ddi_get_instance(dip);
234dc90e123SRobert Mustacchi if (ddi_soft_state_zalloc(pchtemp_state, inst) != DDI_SUCCESS) {
235dc90e123SRobert Mustacchi dev_err(dip, CE_WARN, "failed to allocate soft state entry %d",
236dc90e123SRobert Mustacchi inst);
237dc90e123SRobert Mustacchi return (DDI_FAILURE);
238dc90e123SRobert Mustacchi }
239dc90e123SRobert Mustacchi
240dc90e123SRobert Mustacchi pch = ddi_get_soft_state(pchtemp_state, inst);
241dc90e123SRobert Mustacchi if (pch == NULL) {
242dc90e123SRobert Mustacchi dev_err(dip, CE_WARN, "failed to retrieve soft state entry %d",
243dc90e123SRobert Mustacchi inst);
244dc90e123SRobert Mustacchi return (DDI_FAILURE);
245dc90e123SRobert Mustacchi }
246dc90e123SRobert Mustacchi pch->pcht_dip = dip;
247dc90e123SRobert Mustacchi
248dc90e123SRobert Mustacchi pch->pcht_fm_caps = DDI_FM_ACCCHK_CAPABLE;
249dc90e123SRobert Mustacchi ddi_fm_init(dip, &pch->pcht_fm_caps, &iblk);
250dc90e123SRobert Mustacchi
251dc90e123SRobert Mustacchi mutex_init(&pch->pcht_mutex, NULL, MUTEX_DRIVER, NULL);
252dc90e123SRobert Mustacchi
253dc90e123SRobert Mustacchi if (ddi_dev_regsize(dip, PCHTEMP_RNUMBER, &memsize) != DDI_SUCCESS) {
254dc90e123SRobert Mustacchi dev_err(dip, CE_WARN, "failed to obtain register size for "
255dc90e123SRobert Mustacchi "register set %d", PCHTEMP_RNUMBER);
256dc90e123SRobert Mustacchi goto err;
257dc90e123SRobert Mustacchi }
258dc90e123SRobert Mustacchi
259dc90e123SRobert Mustacchi bzero(&da, sizeof (ddi_device_acc_attr_t));
260dc90e123SRobert Mustacchi da.devacc_attr_version = DDI_DEVICE_ATTR_V0;
261dc90e123SRobert Mustacchi da.devacc_attr_endian_flags = DDI_STRUCTURE_LE_ACC;
262dc90e123SRobert Mustacchi da.devacc_attr_dataorder = DDI_STRICTORDER_ACC;
263dc90e123SRobert Mustacchi
264dc90e123SRobert Mustacchi if (DDI_FM_ACC_ERR_CAP(pch->pcht_fm_caps)) {
265dc90e123SRobert Mustacchi da.devacc_attr_access = DDI_FLAGERR_ACC;
266dc90e123SRobert Mustacchi } else {
267dc90e123SRobert Mustacchi da.devacc_attr_access = DDI_DEFAULT_ACC;
268dc90e123SRobert Mustacchi }
269dc90e123SRobert Mustacchi
270dc90e123SRobert Mustacchi if ((ret = ddi_regs_map_setup(dip, PCHTEMP_RNUMBER, &pch->pcht_base,
271dc90e123SRobert Mustacchi 0, memsize, &da, &pch->pcht_handle)) != DDI_SUCCESS) {
272dc90e123SRobert Mustacchi dev_err(dip, CE_WARN, "failed to map register set %d: %d",
273dc90e123SRobert Mustacchi PCHTEMP_RNUMBER, ret);
274dc90e123SRobert Mustacchi goto err;
275dc90e123SRobert Mustacchi }
276dc90e123SRobert Mustacchi
277dc90e123SRobert Mustacchi if (snprintf(name, sizeof (name), "ts.%d", inst) >= sizeof (name)) {
278dc90e123SRobert Mustacchi dev_err(dip, CE_WARN, "failed to construct minor node name, "
279dc90e123SRobert Mustacchi "name too long");
280dc90e123SRobert Mustacchi goto err;
281dc90e123SRobert Mustacchi }
282dc90e123SRobert Mustacchi
28302674280SRobert Mustacchi if ((ret = ksensor_create(pch->pcht_dip, &pchtemp_temp_ops, pch, name,
28402674280SRobert Mustacchi DDI_NT_SENSOR_TEMP_PCH, &pch->pcht_ksensor)) != 0) {
285dc90e123SRobert Mustacchi dev_err(dip, CE_WARN, "failed to create minor node %s", name);
286dc90e123SRobert Mustacchi goto err;
287dc90e123SRobert Mustacchi }
288dc90e123SRobert Mustacchi
289dc90e123SRobert Mustacchi return (DDI_SUCCESS);
290dc90e123SRobert Mustacchi
291dc90e123SRobert Mustacchi err:
292dc90e123SRobert Mustacchi pchtemp_cleanup(pch);
293dc90e123SRobert Mustacchi return (DDI_FAILURE);
294dc90e123SRobert Mustacchi }
295dc90e123SRobert Mustacchi
296dc90e123SRobert Mustacchi static int
pchtemp_detach(dev_info_t * dip,ddi_detach_cmd_t cmd)297dc90e123SRobert Mustacchi pchtemp_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
298dc90e123SRobert Mustacchi {
299dc90e123SRobert Mustacchi int inst;
300dc90e123SRobert Mustacchi pchtemp_t *pch;
301dc90e123SRobert Mustacchi
302dc90e123SRobert Mustacchi switch (cmd) {
303dc90e123SRobert Mustacchi case DDI_DETACH:
304dc90e123SRobert Mustacchi break;
305dc90e123SRobert Mustacchi case DDI_SUSPEND:
306dc90e123SRobert Mustacchi return (DDI_SUCCESS);
307dc90e123SRobert Mustacchi default:
308dc90e123SRobert Mustacchi return (DDI_FAILURE);
309dc90e123SRobert Mustacchi }
310dc90e123SRobert Mustacchi
311dc90e123SRobert Mustacchi inst = ddi_get_instance(dip);
312dc90e123SRobert Mustacchi pch = ddi_get_soft_state(pchtemp_state, inst);
313dc90e123SRobert Mustacchi if (pch == NULL) {
314dc90e123SRobert Mustacchi dev_err(dip, CE_WARN, "asked to detached instance %d, but "
315dc90e123SRobert Mustacchi "it does not exist in soft state", inst);
316dc90e123SRobert Mustacchi return (DDI_FAILURE);
317dc90e123SRobert Mustacchi }
318dc90e123SRobert Mustacchi
319dc90e123SRobert Mustacchi pchtemp_cleanup(pch);
320dc90e123SRobert Mustacchi return (DDI_SUCCESS);
321dc90e123SRobert Mustacchi }
322dc90e123SRobert Mustacchi
323dc90e123SRobert Mustacchi static struct dev_ops pchtemp_dev_ops = {
324dc90e123SRobert Mustacchi .devo_rev = DEVO_REV,
325dc90e123SRobert Mustacchi .devo_refcnt = 0,
32602674280SRobert Mustacchi .devo_getinfo = nodev,
327dc90e123SRobert Mustacchi .devo_identify = nulldev,
328dc90e123SRobert Mustacchi .devo_probe = nulldev,
329dc90e123SRobert Mustacchi .devo_attach = pchtemp_attach,
330dc90e123SRobert Mustacchi .devo_detach = pchtemp_detach,
331dc90e123SRobert Mustacchi .devo_reset = nodev,
33202674280SRobert Mustacchi .devo_quiesce = ddi_quiesce_not_needed
333dc90e123SRobert Mustacchi };
334dc90e123SRobert Mustacchi
335dc90e123SRobert Mustacchi static struct modldrv pchtemp_modldrv = {
336dc90e123SRobert Mustacchi .drv_modops = &mod_driverops,
337dc90e123SRobert Mustacchi .drv_linkinfo = "Intel PCH Thermal Sensor",
338dc90e123SRobert Mustacchi .drv_dev_ops = &pchtemp_dev_ops
339dc90e123SRobert Mustacchi };
340dc90e123SRobert Mustacchi
341dc90e123SRobert Mustacchi static struct modlinkage pchtemp_modlinkage = {
342dc90e123SRobert Mustacchi .ml_rev = MODREV_1,
343dc90e123SRobert Mustacchi .ml_linkage = { &pchtemp_modldrv, NULL }
344dc90e123SRobert Mustacchi };
345dc90e123SRobert Mustacchi
346dc90e123SRobert Mustacchi int
_init(void)347dc90e123SRobert Mustacchi _init(void)
348dc90e123SRobert Mustacchi {
349dc90e123SRobert Mustacchi int ret;
350dc90e123SRobert Mustacchi
351dc90e123SRobert Mustacchi if (ddi_soft_state_init(&pchtemp_state, sizeof (pchtemp_t), 1) !=
352dc90e123SRobert Mustacchi DDI_SUCCESS) {
353dc90e123SRobert Mustacchi return (ENOMEM);
354dc90e123SRobert Mustacchi }
355dc90e123SRobert Mustacchi
356dc90e123SRobert Mustacchi if ((ret = mod_install(&pchtemp_modlinkage)) != 0) {
357dc90e123SRobert Mustacchi ddi_soft_state_fini(&pchtemp_state);
358dc90e123SRobert Mustacchi return (ret);
359dc90e123SRobert Mustacchi }
360dc90e123SRobert Mustacchi
361dc90e123SRobert Mustacchi return (ret);
362dc90e123SRobert Mustacchi }
363dc90e123SRobert Mustacchi
364dc90e123SRobert Mustacchi int
_info(struct modinfo * modinfop)365dc90e123SRobert Mustacchi _info(struct modinfo *modinfop)
366dc90e123SRobert Mustacchi {
367dc90e123SRobert Mustacchi return (mod_info(&pchtemp_modlinkage, modinfop));
368dc90e123SRobert Mustacchi }
369dc90e123SRobert Mustacchi
370dc90e123SRobert Mustacchi int
_fini(void)371dc90e123SRobert Mustacchi _fini(void)
372dc90e123SRobert Mustacchi {
373dc90e123SRobert Mustacchi int ret;
374dc90e123SRobert Mustacchi
375dc90e123SRobert Mustacchi if ((ret = mod_remove(&pchtemp_modlinkage)) != 0) {
376dc90e123SRobert Mustacchi return (ret);
377dc90e123SRobert Mustacchi }
378dc90e123SRobert Mustacchi
379dc90e123SRobert Mustacchi ddi_soft_state_fini(&pchtemp_state);
380dc90e123SRobert Mustacchi return (ret);
381dc90e123SRobert Mustacchi }
382