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Add a new field to struct cf_setting for special values. These are driver-

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specific values that other components may want to use.  Add support to
acpi_perf(4) to export the control and status values via this field.
This commit is contained in:
Nate Lawson 2005-02-19 06:13:26 +00:00
parent 1089f0319b
commit 28d7170f1c
2 changed files with 8 additions and 1 deletions
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8
sys/dev/acpica/acpi_perf.c
View File

@ -64,7 +64,11 @@ struct acpi_px {
uint32_t sts_val;
};
#define MAX_PX_STATES 16
/* Offsets in struct cf_setting array for storing driver-specific values. */
#define PX_SPEC_CONTROL 0
#define PX_SPEC_STATUS 1
#define MAX_PX_STATES 16
struct acpi_perf_softc {
device_t dev;
@ -389,6 +393,8 @@ acpi_px_to_set(device_t dev, struct acpi_px *px, struct cf_setting *set)
set->lat = px->trans_lat;
set->volts = CPUFREQ_VAL_UNKNOWN;
set->dev = dev;
set->spec[PX_SPEC_CONTROL] = px->ctrl_val;
set->spec[PX_SPEC_STATUS] = px->sts_val;
return (0);
}

1
sys/sys/cpu.h
View File

@ -53,6 +53,7 @@ struct cf_setting {
int power; /* Power consumed in mW. */
int lat; /* Transition latency in us. */
device_t dev; /* Driver providing this setting. */
int spec[4];/* Driver-specific storage for non-standard info. */
};
/* Maximum number of settings a given driver can have. */