blob: 8c122acc68c01dcd1b1a2773231c50cb4d170c99 [file] [log] [blame]
// SPDX-License-Identifier: Apache-2.0
// Copyright (C) 2018 IBM Corp.
#include <errno.h>
#include <stdlib.h>
#include "dbus.h"
#include "mbox.h"
#include "mboxd_flash.h"
#include "mboxd_lpc.h"
#include "mboxd_msg.h"
#include "mboxd_windows.h"
int control_ping(struct mbox_context *context)
{
return 0;
}
int control_daemon_state(struct mbox_context *context)
{
return (context->state & STATE_SUSPENDED) ?
DAEMON_STATE_SUSPENDED : DAEMON_STATE_ACTIVE;
}
int control_lpc_state(struct mbox_context *context)
{
if ((context->state & MAPS_MEM) && !(context->state & MAPS_FLASH)) {
return LPC_STATE_MEM;
} else if (!(context->state & MAPS_MEM) &&
(context->state & MAPS_FLASH)) {
return LPC_STATE_FLASH;
}
return LPC_STATE_INVALID;
}
int control_reset(struct mbox_context *context)
{
int rc;
/* We don't let the host access flash if the daemon is suspened */
if (context->state & STATE_SUSPENDED) {
return -EBUSY;
}
/*
* This will close (and flush) the current window and reset the lpc bus
* mapping back to flash, or memory in case we're using a virtual pnor.
* Better set the bmc event to notify the host of this.
*/
reset_all_windows(context, SET_BMC_EVENT);
rc = reset_lpc(context);
if (rc < 0) {
return rc;
}
return 0;
}
int control_kill(struct mbox_context *context)
{
context->terminate = 1;
MSG_INFO("DBUS Kill - Exiting...\n");
return 0;
}
int control_modified(struct mbox_context *context)
{
/* Flash has been modified - can no longer trust our erased bytemap */
set_flash_bytemap(context, 0, context->flash_size, FLASH_DIRTY);
/* Force daemon to reload all windows -> Set BMC event to notify host */
reset_all_windows(context, SET_BMC_EVENT);
return 0;
}
int control_suspend(struct mbox_context *context)
{
int rc;
if (context->state & STATE_SUSPENDED) {
/* Already Suspended */
return DBUS_SUCCESS;
}
/* Nothing to check - Just set the bit to notify the host */
rc = set_bmc_events(context, BMC_EVENT_FLASH_CTRL_LOST, SET_BMC_EVENT);
if (rc < 0) {
return rc;
}
context->state |= STATE_SUSPENDED;
return rc;
}
int control_resume(struct mbox_context *context, bool modified)
{
int rc;
if (!(context->state & STATE_SUSPENDED)) {
/* We weren't suspended... */
return DBUS_SUCCESS;
}
if (modified) {
/* Call the flash modified handler */
control_modified(context);
}
/* Clear the bit and send the BMC Event to the host */
rc = clr_bmc_events(context, BMC_EVENT_FLASH_CTRL_LOST, SET_BMC_EVENT);
if (rc < 0) {
rc = -E_DBUS_HARDWARE;
}
context->state &= ~STATE_SUSPENDED;
return rc;
}