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author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-03-31 17:29:33 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-03-31 17:29:33 -0700 |
commit | 29d9f30d4ce6c7a38745a54a8cddface10013490 (patch) | |
tree | 85649ba6a7b39203584d8db9365e03f64e62c136 /drivers/net/wireless/ath/ath11k/thermal.c | |
parent | 56a451b780676bc1cdac011735fe2869fa2e9abf (diff) | |
parent | 7f80ccfe996871ca69648efee74a60ae7ad0dcd9 (diff) | |
download | linux-29d9f30d4ce6c7a38745a54a8cddface10013490.tar.bz2 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from David Miller:
"Highlights:
1) Fix the iwlwifi regression, from Johannes Berg.
2) Support BSS coloring and 802.11 encapsulation offloading in
hardware, from John Crispin.
3) Fix some potential Spectre issues in qtnfmac, from Sergey
Matyukevich.
4) Add TTL decrement action to openvswitch, from Matteo Croce.
5) Allow paralleization through flow_action setup by not taking the
RTNL mutex, from Vlad Buslov.
6) A lot of zero-length array to flexible-array conversions, from
Gustavo A. R. Silva.
7) Align XDP statistics names across several drivers for consistency,
from Lorenzo Bianconi.
8) Add various pieces of infrastructure for offloading conntrack, and
make use of it in mlx5 driver, from Paul Blakey.
9) Allow using listening sockets in BPF sockmap, from Jakub Sitnicki.
10) Lots of parallelization improvements during configuration changes
in mlxsw driver, from Ido Schimmel.
11) Add support to devlink for generic packet traps, which report
packets dropped during ACL processing. And use them in mlxsw
driver. From Jiri Pirko.
12) Support bcmgenet on ACPI, from Jeremy Linton.
13) Make BPF compatible with RT, from Thomas Gleixnet, Alexei
Starovoitov, and your's truly.
14) Support XDP meta-data in virtio_net, from Yuya Kusakabe.
15) Fix sysfs permissions when network devices change namespaces, from
Christian Brauner.
16) Add a flags element to ethtool_ops so that drivers can more simply
indicate which coalescing parameters they actually support, and
therefore the generic layer can validate the user's ethtool
request. Use this in all drivers, from Jakub Kicinski.
17) Offload FIFO qdisc in mlxsw, from Petr Machata.
18) Support UDP sockets in sockmap, from Lorenz Bauer.
19) Fix stretch ACK bugs in several TCP congestion control modules,
from Pengcheng Yang.
20) Support virtual functiosn in octeontx2 driver, from Tomasz
Duszynski.
21) Add region operations for devlink and use it in ice driver to dump
NVM contents, from Jacob Keller.
22) Add support for hw offload of MACSEC, from Antoine Tenart.
23) Add support for BPF programs that can be attached to LSM hooks,
from KP Singh.
24) Support for multiple paths, path managers, and counters in MPTCP.
From Peter Krystad, Paolo Abeni, Florian Westphal, Davide Caratti,
and others.
25) More progress on adding the netlink interface to ethtool, from
Michal Kubecek"
* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2121 commits)
net: ipv6: rpl_iptunnel: Fix potential memory leak in rpl_do_srh_inline
cxgb4/chcr: nic-tls stats in ethtool
net: dsa: fix oops while probing Marvell DSA switches
net/bpfilter: remove superfluous testing message
net: macb: Fix handling of fixed-link node
net: dsa: ksz: Select KSZ protocol tag
netdevsim: dev: Fix memory leak in nsim_dev_take_snapshot_write
net: stmmac: add EHL 2.5Gbps PCI info and PCI ID
net: stmmac: add EHL PSE0 & PSE1 1Gbps PCI info and PCI ID
net: stmmac: create dwmac-intel.c to contain all Intel platform
net: dsa: bcm_sf2: Support specifying VLAN tag egress rule
net: dsa: bcm_sf2: Add support for matching VLAN TCI
net: dsa: bcm_sf2: Move writing of CFP_DATA(5) into slicing functions
net: dsa: bcm_sf2: Check earlier for FLOW_EXT and FLOW_MAC_EXT
net: dsa: bcm_sf2: Disable learning for ASP port
net: dsa: b53: Deny enslaving port 7 for 7278 into a bridge
net: dsa: b53: Prevent tagged VLAN on port 7 for 7278
net: dsa: b53: Restore VLAN entries upon (re)configuration
net: dsa: bcm_sf2: Fix overflow checks
hv_netvsc: Remove unnecessary round_up for recv_completion_cnt
...
Diffstat (limited to 'drivers/net/wireless/ath/ath11k/thermal.c')
-rw-r--r-- | drivers/net/wireless/ath/ath11k/thermal.c | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath11k/thermal.c b/drivers/net/wireless/ath/ath11k/thermal.c new file mode 100644 index 000000000000..259dddbda2c7 --- /dev/null +++ b/drivers/net/wireless/ath/ath11k/thermal.c @@ -0,0 +1,224 @@ +// SPDX-License-Identifier: BSD-3-Clause-Clear +/* + * Copyright (c) 2020 The Linux Foundation. All rights reserved. + */ + +#include <linux/device.h> +#include <linux/sysfs.h> +#include <linux/thermal.h> +#include <linux/hwmon.h> +#include <linux/hwmon-sysfs.h> +#include "core.h" +#include "debug.h" + +static int +ath11k_thermal_get_max_throttle_state(struct thermal_cooling_device *cdev, + unsigned long *state) +{ + *state = ATH11K_THERMAL_THROTTLE_MAX; + + return 0; +} + +static int +ath11k_thermal_get_cur_throttle_state(struct thermal_cooling_device *cdev, + unsigned long *state) +{ + struct ath11k *ar = cdev->devdata; + + mutex_lock(&ar->conf_mutex); + *state = ar->thermal.throttle_state; + mutex_unlock(&ar->conf_mutex); + + return 0; +} + +static int +ath11k_thermal_set_cur_throttle_state(struct thermal_cooling_device *cdev, + unsigned long throttle_state) +{ + struct ath11k *ar = cdev->devdata; + int ret; + + if (throttle_state > ATH11K_THERMAL_THROTTLE_MAX) { + ath11k_warn(ar->ab, "throttle state %ld is exceeding the limit %d\n", + throttle_state, ATH11K_THERMAL_THROTTLE_MAX); + return -EINVAL; + } + mutex_lock(&ar->conf_mutex); + ret = ath11k_thermal_set_throttling(ar, throttle_state); + if (ret == 0) + ar->thermal.throttle_state = throttle_state; + mutex_unlock(&ar->conf_mutex); + return ret; +} + +static struct thermal_cooling_device_ops ath11k_thermal_ops = { + .get_max_state = ath11k_thermal_get_max_throttle_state, + .get_cur_state = ath11k_thermal_get_cur_throttle_state, + .set_cur_state = ath11k_thermal_set_cur_throttle_state, +}; + +static ssize_t ath11k_thermal_show_temp(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct ath11k *ar = dev_get_drvdata(dev); + int ret, temperature; + unsigned long time_left; + + mutex_lock(&ar->conf_mutex); + + /* Can't get temperature when the card is off */ + if (ar->state != ATH11K_STATE_ON) { + ret = -ENETDOWN; + goto out; + } + + reinit_completion(&ar->thermal.wmi_sync); + ret = ath11k_wmi_send_pdev_temperature_cmd(ar); + if (ret) { + ath11k_warn(ar->ab, "failed to read temperature %d\n", ret); + goto out; + } + + if (test_bit(ATH11K_FLAG_CRASH_FLUSH, &ar->ab->dev_flags)) { + ret = -ESHUTDOWN; + goto out; + } + + time_left = wait_for_completion_timeout(&ar->thermal.wmi_sync, + ATH11K_THERMAL_SYNC_TIMEOUT_HZ); + if (!time_left) { + ath11k_warn(ar->ab, "failed to synchronize thermal read\n"); + ret = -ETIMEDOUT; + goto out; + } + + spin_lock_bh(&ar->data_lock); + temperature = ar->thermal.temperature; + spin_unlock_bh(&ar->data_lock); + + /* display in millidegree celcius */ + ret = snprintf(buf, PAGE_SIZE, "%d\n", temperature * 1000); +out: + mutex_unlock(&ar->conf_mutex); + return ret; +} + +void ath11k_thermal_event_temperature(struct ath11k *ar, int temperature) +{ + spin_lock_bh(&ar->data_lock); + ar->thermal.temperature = temperature; + spin_unlock_bh(&ar->data_lock); + complete(&ar->thermal.wmi_sync); +} + +static SENSOR_DEVICE_ATTR(temp1_input, 0444, ath11k_thermal_show_temp, + NULL, 0); + +static struct attribute *ath11k_hwmon_attrs[] = { + &sensor_dev_attr_temp1_input.dev_attr.attr, + NULL, +}; +ATTRIBUTE_GROUPS(ath11k_hwmon); + +int ath11k_thermal_set_throttling(struct ath11k *ar, u32 throttle_state) +{ + struct ath11k_base *sc = ar->ab; + struct thermal_mitigation_params param; + int ret = 0; + + lockdep_assert_held(&ar->conf_mutex); + + if (ar->state != ATH11K_STATE_ON) + return 0; + + memset(¶m, 0, sizeof(param)); + param.pdev_id = ar->pdev->pdev_id; + param.enable = throttle_state ? 1 : 0; + param.dc = ATH11K_THERMAL_DEFAULT_DUTY_CYCLE; + param.dc_per_event = 0xFFFFFFFF; + + param.levelconf[0].tmplwm = ATH11K_THERMAL_TEMP_LOW_MARK; + param.levelconf[0].tmphwm = ATH11K_THERMAL_TEMP_HIGH_MARK; + param.levelconf[0].dcoffpercent = throttle_state; + param.levelconf[0].priority = 0; /* disable all data tx queues */ + + ret = ath11k_wmi_send_thermal_mitigation_param_cmd(ar, ¶m); + if (ret) { + ath11k_warn(sc, "failed to send thermal mitigation duty cycle %u ret %d\n", + throttle_state, ret); + } + + return ret; +} + +int ath11k_thermal_register(struct ath11k_base *sc) +{ + struct thermal_cooling_device *cdev; + struct device *hwmon_dev; + struct ath11k *ar; + struct ath11k_pdev *pdev; + int i, ret; + + for (i = 0; i < sc->num_radios; i++) { + pdev = &sc->pdevs[i]; + ar = pdev->ar; + if (!ar) + continue; + + cdev = thermal_cooling_device_register("ath11k_thermal", ar, + &ath11k_thermal_ops); + + if (IS_ERR(cdev)) { + ath11k_err(sc, "failed to setup thermal device result: %ld\n", + PTR_ERR(cdev)); + return -EINVAL; + } + + ret = sysfs_create_link(&ar->hw->wiphy->dev.kobj, &cdev->device.kobj, + "cooling_device"); + if (ret) { + ath11k_err(sc, "failed to create cooling device symlink\n"); + goto err_thermal_destroy; + } + + ar->thermal.cdev = cdev; + if (!IS_REACHABLE(CONFIG_HWMON)) + return 0; + + hwmon_dev = devm_hwmon_device_register_with_groups(&ar->hw->wiphy->dev, + "ath11k_hwmon", ar, + ath11k_hwmon_groups); + if (IS_ERR(hwmon_dev)) { + ath11k_err(ar->ab, "failed to register hwmon device: %ld\n", + PTR_ERR(hwmon_dev)); + ret = -EINVAL; + goto err_thermal_destroy; + } + } + + return 0; + +err_thermal_destroy: + ath11k_thermal_unregister(sc); + return ret; +} + +void ath11k_thermal_unregister(struct ath11k_base *sc) +{ + struct ath11k *ar; + struct ath11k_pdev *pdev; + int i; + + for (i = 0; i < sc->num_radios; i++) { + pdev = &sc->pdevs[i]; + ar = pdev->ar; + if (!ar) + continue; + + sysfs_remove_link(&ar->hw->wiphy->dev.kobj, "cooling_device"); + thermal_cooling_device_unregister(ar->thermal.cdev); + } +} |