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164 lines
5.6 KiB
164 lines
5.6 KiB
// SPDX-License-Identifier: LGPL-2.1+ |
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// Copyright (C) 2022, Linaro Ltd - Daniel Lezcano <[email protected]> |
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#include <linux/netlink.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <unistd.h> |
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#include <thermal.h> |
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#include "thermal_nl.h" |
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/* |
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* Optimization: fill this array to tell which event we do want to pay |
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* attention to. That happens at init time with the ops |
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* structure. Each ops will enable the event and the general handler |
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* will be able to discard the event if there is not ops associated |
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* with it. |
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*/ |
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static int enabled_ops[__THERMAL_GENL_EVENT_MAX]; |
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static int handle_thermal_event(struct nl_msg *n, void *arg) |
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{ |
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struct nlmsghdr *nlh = nlmsg_hdr(n); |
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struct genlmsghdr *genlhdr = genlmsg_hdr(nlh); |
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struct nlattr *attrs[THERMAL_GENL_ATTR_MAX + 1]; |
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struct thermal_handler_param *thp = arg; |
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struct thermal_events_ops *ops = &thp->th->ops->events; |
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genlmsg_parse(nlh, 0, attrs, THERMAL_GENL_ATTR_MAX, NULL); |
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arg = thp->arg; |
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/* |
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* This is an event we don't care of, bail out. |
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*/ |
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if (!enabled_ops[genlhdr->cmd]) |
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return THERMAL_SUCCESS; |
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switch (genlhdr->cmd) { |
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case THERMAL_GENL_EVENT_TZ_CREATE: |
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return ops->tz_create(nla_get_string(attrs[THERMAL_GENL_ATTR_TZ_NAME]), |
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nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_ID]), arg); |
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case THERMAL_GENL_EVENT_TZ_DELETE: |
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return ops->tz_delete(nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_ID]), arg); |
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case THERMAL_GENL_EVENT_TZ_ENABLE: |
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return ops->tz_enable(nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_ID]), arg); |
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case THERMAL_GENL_EVENT_TZ_DISABLE: |
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return ops->tz_disable(nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_ID]), arg); |
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case THERMAL_GENL_EVENT_TZ_TRIP_CHANGE: |
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return ops->trip_change(nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_ID]), |
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nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_TRIP_ID]), |
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nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_TRIP_TYPE]), |
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nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_TRIP_TEMP]), |
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nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_TRIP_HYST]), arg); |
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case THERMAL_GENL_EVENT_TZ_TRIP_ADD: |
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return ops->trip_add(nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_ID]), |
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nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_TRIP_ID]), |
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nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_TRIP_TYPE]), |
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nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_TRIP_TEMP]), |
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nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_TRIP_HYST]), arg); |
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case THERMAL_GENL_EVENT_TZ_TRIP_DELETE: |
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return ops->trip_delete(nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_ID]), |
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nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_TRIP_ID]), arg); |
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case THERMAL_GENL_EVENT_TZ_TRIP_UP: |
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return ops->trip_high(nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_ID]), |
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nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_TRIP_ID]), |
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nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_TEMP]), arg); |
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case THERMAL_GENL_EVENT_TZ_TRIP_DOWN: |
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return ops->trip_low(nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_ID]), |
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nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_TRIP_ID]), |
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nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_TEMP]), arg); |
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case THERMAL_GENL_EVENT_CDEV_ADD: |
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return ops->cdev_add(nla_get_string(attrs[THERMAL_GENL_ATTR_CDEV_NAME]), |
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nla_get_u32(attrs[THERMAL_GENL_ATTR_CDEV_ID]), |
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nla_get_u32(attrs[THERMAL_GENL_ATTR_CDEV_MAX_STATE]), arg); |
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case THERMAL_GENL_EVENT_CDEV_DELETE: |
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return ops->cdev_delete(nla_get_u32(attrs[THERMAL_GENL_ATTR_CDEV_ID]), arg); |
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case THERMAL_GENL_EVENT_CDEV_STATE_UPDATE: |
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return ops->cdev_update(nla_get_u32(attrs[THERMAL_GENL_ATTR_CDEV_ID]), |
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nla_get_u32(attrs[THERMAL_GENL_ATTR_CDEV_CUR_STATE]), arg); |
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case THERMAL_GENL_EVENT_TZ_GOV_CHANGE: |
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return ops->gov_change(nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_ID]), |
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nla_get_string(attrs[THERMAL_GENL_ATTR_GOV_NAME]), arg); |
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default: |
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return -1; |
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} |
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} |
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static void thermal_events_ops_init(struct thermal_events_ops *ops) |
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{ |
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enabled_ops[THERMAL_GENL_EVENT_TZ_CREATE] = !!ops->tz_create; |
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enabled_ops[THERMAL_GENL_EVENT_TZ_DELETE] = !!ops->tz_delete; |
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enabled_ops[THERMAL_GENL_EVENT_TZ_DISABLE] = !!ops->tz_disable; |
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enabled_ops[THERMAL_GENL_EVENT_TZ_ENABLE] = !!ops->tz_enable; |
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enabled_ops[THERMAL_GENL_EVENT_TZ_TRIP_UP] = !!ops->trip_high; |
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enabled_ops[THERMAL_GENL_EVENT_TZ_TRIP_DOWN] = !!ops->trip_low; |
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enabled_ops[THERMAL_GENL_EVENT_TZ_TRIP_CHANGE] = !!ops->trip_change; |
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enabled_ops[THERMAL_GENL_EVENT_TZ_TRIP_ADD] = !!ops->trip_add; |
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enabled_ops[THERMAL_GENL_EVENT_TZ_TRIP_DELETE] = !!ops->trip_delete; |
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enabled_ops[THERMAL_GENL_EVENT_CDEV_ADD] = !!ops->cdev_add; |
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enabled_ops[THERMAL_GENL_EVENT_CDEV_DELETE] = !!ops->cdev_delete; |
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enabled_ops[THERMAL_GENL_EVENT_CDEV_STATE_UPDATE] = !!ops->cdev_update; |
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enabled_ops[THERMAL_GENL_EVENT_TZ_GOV_CHANGE] = !!ops->gov_change; |
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} |
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thermal_error_t thermal_events_handle(struct thermal_handler *th, void *arg) |
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{ |
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struct thermal_handler_param thp = { .th = th, .arg = arg }; |
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if (!th) |
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return THERMAL_ERROR; |
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if (nl_cb_set(th->cb_event, NL_CB_VALID, NL_CB_CUSTOM, |
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handle_thermal_event, &thp)) |
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return THERMAL_ERROR; |
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return nl_recvmsgs(th->sk_event, th->cb_event); |
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} |
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int thermal_events_fd(struct thermal_handler *th) |
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{ |
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if (!th) |
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return -1; |
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return nl_socket_get_fd(th->sk_event); |
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} |
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thermal_error_t thermal_events_exit(struct thermal_handler *th) |
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{ |
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if (nl_unsubscribe_thermal(th->sk_event, th->cb_event, |
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THERMAL_GENL_EVENT_GROUP_NAME)) |
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return THERMAL_ERROR; |
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nl_thermal_disconnect(th->sk_event, th->cb_event); |
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return THERMAL_SUCCESS; |
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} |
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thermal_error_t thermal_events_init(struct thermal_handler *th) |
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{ |
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thermal_events_ops_init(&th->ops->events); |
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if (nl_thermal_connect(&th->sk_event, &th->cb_event)) |
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return THERMAL_ERROR; |
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if (nl_subscribe_thermal(th->sk_event, th->cb_event, |
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THERMAL_GENL_EVENT_GROUP_NAME)) |
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return THERMAL_ERROR; |
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return THERMAL_SUCCESS; |
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}
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