| 182 |
182 |
DRIVER_MODULE(cpu, acpi, acpi_cpu_driver, acpi_cpu_devclass, 0, 0);
|
| 183 |
183 |
MODULE_DEPEND(cpu, acpi, 1, 1, 1);
|
| 184 |
184 |
|
|
185 |
static int acpi_cpu_probe_debug_knob = 0;
|
|
186 |
TUNABLE_INT("debug.acpi.cpu.knob", &acpi_cpu_probe_debug_knob);
|
|
187 |
#define DEBUG_KNOB(n) \
|
|
188 |
if (acpi_cpu_probe_debug_knob == (n)) return(ENXIO)
|
|
189 |
|
| 185 |
190 |
static int
|
| 186 |
191 |
acpi_cpu_probe(device_t dev)
|
| 187 |
192 |
{
|
| 188 |
|
int acpi_id, cpu_id, cx_count;
|
|
193 |
int acpi_id, cpu_id, proc_id, cx_count;
|
| 189 |
194 |
ACPI_BUFFER buf;
|
| 190 |
195 |
ACPI_HANDLE handle;
|
| 191 |
196 |
char msg[32];
|
| ... | ... | |
| 221 |
226 |
* ProcId as a key, however, some boxes do not have the same values
|
| 222 |
227 |
* in their Processor object as the ProcId values in the MADT.
|
| 223 |
228 |
*/
|
| 224 |
|
acpi_id = obj->Processor.ProcId;
|
|
229 |
acpi_id = proc_id = obj->Processor.ProcId;
|
| 225 |
230 |
AcpiOsFree(obj);
|
| 226 |
|
if (acpi_pcpu_get_id(device_get_unit(dev), &acpi_id, &cpu_id) != 0)
|
|
231 |
if (acpi_pcpu_get_id(device_get_unit(dev), &acpi_id, &cpu_id) != 0) {
|
|
232 |
if (bootverbose)
|
|
233 |
device_printf(dev, "ProcId %d: can't find cpu_id\n", proc_id);
|
| 227 |
234 |
return (ENXIO);
|
| 228 |
|
|
|
235 |
}
|
|
236 |
if (bootverbose) {
|
|
237 |
device_printf(dev, "ProcId %d: acpi_id=%d, cpu_id=%d\n", proc_id,
|
|
238 |
acpi_id, cpu_id);
|
|
239 |
}
|
| 229 |
240 |
/*
|
| 230 |
241 |
* Check if we already probed this processor. We scan the bus twice
|
| 231 |
242 |
* so it's possible we've already seen this one.
|
| ... | ... | |
| 313 |
324 |
* Probe for throttling and Cx state support.
|
| 314 |
325 |
* If none of these is present, free up unused resources.
|
| 315 |
326 |
*/
|
|
327 |
DEBUG_KNOB(1);
|
| 316 |
328 |
thr_ret = acpi_cpu_throttle_probe(sc);
|
|
329 |
DEBUG_KNOB(2);
|
| 317 |
330 |
cx_ret = acpi_cpu_cx_probe(sc);
|
|
331 |
DEBUG_KNOB(3);
|
| 318 |
332 |
if (thr_ret == 0 || cx_ret == 0) {
|
| 319 |
333 |
status = AcpiInstallNotifyHandler(sc->cpu_handle, ACPI_DEVICE_NOTIFY,
|
| 320 |
334 |
acpi_cpu_notify, sc);
|
|
335 |
DEBUG_KNOB(4);
|
| 321 |
336 |
if (device_get_unit(dev) == 0)
|
| 322 |
337 |
AcpiOsExecute(OSL_NOTIFY_HANDLER, acpi_cpu_startup, NULL);
|
| 323 |
338 |
} else {
|
| 324 |
339 |
sysctl_ctx_free(&acpi_cpu_sysctl_ctx);
|
| 325 |
340 |
}
|
|
341 |
DEBUG_KNOB(5);
|
| 326 |
342 |
|
| 327 |
343 |
return_VALUE (0);
|
| 328 |
344 |
}
|
|
345 |
#undef DEBUG_KNOB
|
| 329 |
346 |
|
| 330 |
347 |
/*
|
| 331 |
348 |
* Find the nth present CPU and return its pc_cpuid as well as set the
|