96 lines
2.2 KiB
C
96 lines
2.2 KiB
C
|
/* Copyright 2013 The Chromium OS Authors. All rights reserved.
|
||
|
|
* Use of this source code is governed by a BSD-style license that can be
|
||
|
|
* found in the LICENSE file.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* Common chipset throttling code for Chrome EC */
|
||
|
|
|
||
|
|
#include "chipset.h"
|
||
|
|
#include "common.h"
|
||
|
|
#include "console.h"
|
||
|
|
#include "host_command.h"
|
||
|
|
#include "task.h"
|
||
|
|
#include "throttle_ap.h"
|
||
|
|
#include "util.h"
|
||
|
|
|
||
|
|
/* Console output macros */
|
||
|
|
#define CPUTS(outstr) cputs(CC_THERMAL, outstr)
|
||
|
|
#define CPRINTS(format, args...) cprints(CC_THERMAL, format, ## args)
|
||
|
|
|
||
|
|
/*****************************************************************************/
|
||
|
|
/* This enforces the virtual OR of all throttling sources. */
|
||
|
|
static struct mutex throttle_mutex;
|
||
|
|
static uint32_t throttle_request[NUM_THROTTLE_TYPES];
|
||
|
|
|
||
|
|
void throttle_ap(enum throttle_level level,
|
||
|
|
enum throttle_type type,
|
||
|
|
enum throttle_sources source)
|
||
|
|
{
|
||
|
|
uint32_t tmpval, bitmask;
|
||
|
|
|
||
|
|
mutex_lock(&throttle_mutex);
|
||
|
|
|
||
|
|
bitmask = BIT(source);
|
||
|
|
|
||
|
|
switch (level) {
|
||
|
|
case THROTTLE_ON:
|
||
|
|
throttle_request[type] |= bitmask;
|
||
|
|
break;
|
||
|
|
case THROTTLE_OFF:
|
||
|
|
throttle_request[type] &= ~bitmask;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
tmpval = throttle_request[type]; /* save for printing */
|
||
|
|
|
||
|
|
switch (type) {
|
||
|
|
case THROTTLE_SOFT:
|
||
|
|
#ifdef HAS_TASK_HOSTCMD
|
||
|
|
host_throttle_cpu(tmpval);
|
||
|
|
#endif
|
||
|
|
break;
|
||
|
|
case THROTTLE_HARD:
|
||
|
|
#ifdef CONFIG_CHIPSET_CAN_THROTTLE
|
||
|
|
chipset_throttle_cpu(tmpval);
|
||
|
|
#endif
|
||
|
|
break;
|
||
|
|
|
||
|
|
case NUM_THROTTLE_TYPES:
|
||
|
|
/* Make the compiler shut up. Don't use 'default', because
|
||
|
|
* we still want to catch any new types.
|
||
|
|
*/
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
mutex_unlock(&throttle_mutex);
|
||
|
|
|
||
|
|
/* print outside the mutex */
|
||
|
|
CPRINTS("set AP throttling type %d to %s (0x%08x)",
|
||
|
|
type, tmpval ? "on" : "off", tmpval);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
/*****************************************************************************/
|
||
|
|
/* Console commands */
|
||
|
|
#ifdef CONFIG_CMD_APTHROTTLE
|
||
|
|
static int command_apthrottle(int argc, char **argv)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
uint32_t tmpval;
|
||
|
|
|
||
|
|
for (i = 0; i < NUM_THROTTLE_TYPES; i++) {
|
||
|
|
mutex_lock(&throttle_mutex);
|
||
|
|
tmpval = throttle_request[i];
|
||
|
|
mutex_unlock(&throttle_mutex);
|
||
|
|
|
||
|
|
ccprintf("AP throttling type %d is %s (0x%08x)\n", i,
|
||
|
|
tmpval ? "on" : "off", tmpval);
|
||
|
|
}
|
||
|
|
|
||
|
|
return EC_SUCCESS;
|
||
|
|
}
|
||
|
|
DECLARE_CONSOLE_COMMAND(apthrottle, command_apthrottle,
|
||
|
|
NULL,
|
||
|
|
"Display the AP throttling state");
|
||
|
|
#endif
|