#include <linux/leds.h>
#include <linux/in6.h>
+#ifdef CONFIG_THERMAL
+#include <linux/thermal.h>
+#endif
+
#include "iwl-op-mode.h"
#include "iwl-trans.h"
#include "iwl-notif-wait.h"
bool throttle;
};
+#ifdef CONFIG_THERMAL
+/**
+ *struct iwl_mvm_thermal_device - thermal zone related data
+ * @temp_trips: temperature thresholds for report
+ * @fw_trips_index: keep indexes to original array - temp_trips
+ * @tzone: thermal zone device data
+*/
+struct iwl_mvm_thermal_device {
+ s16 temp_trips[IWL_MAX_DTS_TRIPS];
+ u8 fw_trips_index[IWL_MAX_DTS_TRIPS];
+ struct thermal_zone_device *tzone;
+};
+#endif
+
#define IWL_MVM_NUM_LAST_FRAMES_UCODE_RATES 8
struct iwl_mvm_frame_stats {
/* Thermal Throttling and CTkill */
struct iwl_mvm_tt_mgmt thermal_throttle;
+#ifdef CONFIG_THERMAL
+ struct iwl_mvm_thermal_device tz_device;
+#endif
+
s32 temperature; /* Celsius */
/*
* Debug option to set the NIC temperature. This option makes the
static inline bool iwl_mvm_is_tt_in_fw(struct iwl_mvm *mvm)
{
+#ifdef CONFIG_THERMAL
/* these two TLV are redundant since the responsibility to CT-kill by
* FW happens only after we send at least one command of
* temperature THs report.
IWL_UCODE_TLV_CAPA_CT_KILL_BY_FW) &&
fw_has_capa(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_CAPA_TEMP_THS_REPORT_SUPPORT);
+#else /* CONFIG_THERMAL */
+ return false;
+#endif /* CONFIG_THERMAL */
}
extern const u8 iwl_mvm_ac_to_tx_fifo[];
void iwl_mvm_temp_notif(struct iwl_mvm *mvm,
struct iwl_rx_cmd_buffer *rxb);
void iwl_mvm_tt_handler(struct iwl_mvm *mvm);
-void iwl_mvm_tt_initialize(struct iwl_mvm *mvm, u32 min_backoff);
-void iwl_mvm_tt_exit(struct iwl_mvm *mvm);
+void iwl_mvm_thermal_initialize(struct iwl_mvm *mvm, u32 min_backoff);
+void iwl_mvm_thermal_exit(struct iwl_mvm *mvm);
void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state);
int iwl_mvm_get_temp(struct iwl_mvm *mvm, s32 *temp);
void iwl_mvm_ct_kill_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
+int iwl_mvm_send_temp_report_ths_cmd(struct iwl_mvm *mvm);
/* Location Aware Regulatory */
struct iwl_mcc_update_resp *
*
*****************************************************************************/
+#include <linux/sort.h>
+
#include "mvm.h"
#define IWL_MVM_TEMP_NOTIF_WAIT_TIMEOUT HZ
IWL_ERR(mvm, "Enter CT Kill\n");
iwl_mvm_set_hw_ctkill_state(mvm, true);
- tt->throttle = false;
- tt->dynamic_smps = false;
+ if (!iwl_mvm_is_tt_in_fw(mvm)) {
+ tt->throttle = false;
+ tt->dynamic_smps = false;
+ }
/* Don't schedule an exit work if we're in test mode, since
* the temperature will not change unless we manually set it
static int iwl_mvm_temp_notif_parse(struct iwl_mvm *mvm,
struct iwl_rx_packet *pkt)
{
- struct iwl_dts_measurement_notif *notif;
+ struct iwl_dts_measurement_notif_v1 *notif_v1;
int len = iwl_rx_packet_payload_len(pkt);
int temp;
- if (WARN_ON_ONCE(len < sizeof(*notif))) {
+ /* we can use notif_v1 only, because v2 only adds an additional
+ * parameter, which is not used in this function.
+ */
+ if (WARN_ON_ONCE(len < sizeof(*notif_v1))) {
IWL_ERR(mvm, "Invalid DTS_MEASUREMENT_NOTIFICATION\n");
return -EINVAL;
}
- notif = (void *)pkt->data;
+ notif_v1 = (void *)pkt->data;
- temp = le32_to_cpu(notif->temp);
+ temp = le32_to_cpu(notif_v1->temp);
/* shouldn't be negative, but since it's s32, make sure it isn't */
if (WARN_ON_ONCE(temp < 0))
void iwl_mvm_temp_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
{
struct iwl_rx_packet *pkt = rxb_addr(rxb);
+ struct iwl_dts_measurement_notif_v2 *notif_v2;
+ int len = iwl_rx_packet_payload_len(pkt);
int temp;
+ u32 ths_crossed;
/* the notification is handled synchronously in ctkill, so skip here */
if (test_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status))
return;
temp = iwl_mvm_temp_notif_parse(mvm, pkt);
- if (temp < 0)
+
+ if (!iwl_mvm_is_tt_in_fw(mvm)) {
+ if (temp >= 0)
+ iwl_mvm_tt_temp_changed(mvm, temp);
+ return;
+ }
+
+ if (WARN_ON_ONCE(len < sizeof(*notif_v2))) {
+ IWL_ERR(mvm, "Invalid DTS_MEASUREMENT_NOTIFICATION\n");
+ return;
+ }
+
+ notif_v2 = (void *)pkt->data;
+ ths_crossed = le32_to_cpu(notif_v2->threshold_idx);
+
+ /* 0xFF in ths_crossed means the notification is not related
+ * to a trip, so we can ignore it here.
+ */
+ if (ths_crossed == 0xFF)
+ return;
+
+ IWL_DEBUG_TEMP(mvm, "Temp = %d Threshold crossed = %d\n",
+ temp, ths_crossed);
+
+#ifdef CONFIG_THERMAL
+ if (WARN_ON(ths_crossed >= IWL_MAX_DTS_TRIPS))
return;
- iwl_mvm_tt_temp_changed(mvm, temp);
+ /*
+ * We are now handling a temperature notification from the firmware
+ * in ASYNC and hold the mutex. thermal_notify_framework will call
+ * us back through get_temp() which ought to send a SYNC command to
+ * the firmware and hence to take the mutex.
+ * Avoid the deadlock by unlocking the mutex here.
+ */
+ mutex_unlock(&mvm->mutex);
+ thermal_notify_framework(mvm->tz_device.tzone,
+ mvm->tz_device.fw_trips_index[ths_crossed]);
+ mutex_lock(&mvm->mutex);
+#endif /* CONFIG_THERMAL */
}
void iwl_mvm_ct_kill_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
.support_tx_backoff = true,
};
-void iwl_mvm_tt_initialize(struct iwl_mvm *mvm, u32 min_backoff)
+#ifdef CONFIG_THERMAL
+static int compare_temps(const void *a, const void *b)
+{
+ return ((s16)le16_to_cpu(*(__le16 *)a) -
+ (s16)le16_to_cpu(*(__le16 *)b));
+}
+
+int iwl_mvm_send_temp_report_ths_cmd(struct iwl_mvm *mvm)
+{
+ struct temp_report_ths_cmd cmd = {0};
+ int ret, i, j, idx = 0;
+
+ lockdep_assert_held(&mvm->mutex);
+
+ /* The driver holds array of temperature trips that are unsorted
+ * and uncompressed, the FW should get it compressed and sorted
+ */
+
+ /* compress temp_trips to cmd array, remove uninitialized values*/
+ for (i = 0; i < IWL_MAX_DTS_TRIPS; i++)
+ if (mvm->tz_device.temp_trips[i] != S16_MIN) {
+ cmd.thresholds[idx++] =
+ cpu_to_le16(mvm->tz_device.temp_trips[i]);
+ }
+ cmd.num_temps = cpu_to_le32(idx);
+
+ if (!idx)
+ goto send;
+
+ /*sort cmd array*/
+ sort(cmd.thresholds, idx, sizeof(s16), compare_temps, NULL);
+
+ /* we should save the indexes of trips because we sort
+ * and compress the orginal array
+ */
+ for (i = 0; i < idx; i++) {
+ for (j = 0; j < IWL_MAX_DTS_TRIPS; j++) {
+ if (le16_to_cpu(cmd.thresholds[i]) ==
+ mvm->tz_device.temp_trips[j])
+ mvm->tz_device.fw_trips_index[i] = j;
+ }
+ }
+
+send:
+ ret = iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(PHY_OPS_GROUP,
+ TEMP_REPORTING_THRESHOLDS_CMD),
+ 0, sizeof(cmd), &cmd);
+ if (ret)
+ IWL_ERR(mvm, "TEMP_REPORT_THS_CMD command failed (err=%d)\n",
+ ret);
+
+ return ret;
+}
+
+static int iwl_mvm_tzone_get_temp(struct thermal_zone_device *device,
+ int *temperature)
+{
+ struct iwl_mvm *mvm = (struct iwl_mvm *)device->devdata;
+ int ret;
+ int temp;
+
+ mutex_lock(&mvm->mutex);
+
+ if (!mvm->ucode_loaded || !(mvm->cur_ucode == IWL_UCODE_REGULAR)) {
+ ret = -EIO;
+ goto out;
+ }
+
+ ret = iwl_mvm_get_temp(mvm, &temp);
+ if (ret)
+ goto out;
+
+ *temperature = temp * 1000;
+
+out:
+ mutex_unlock(&mvm->mutex);
+ return ret;
+}
+
+static int iwl_mvm_tzone_get_trip_temp(struct thermal_zone_device *device,
+ int trip, int *temp)
+{
+ struct iwl_mvm *mvm = (struct iwl_mvm *)device->devdata;
+
+ if (trip < 0 || trip >= IWL_MAX_DTS_TRIPS)
+ return -EINVAL;
+
+ *temp = mvm->tz_device.temp_trips[trip] * 1000;
+
+ return 0;
+}
+
+static int iwl_mvm_tzone_get_trip_type(struct thermal_zone_device *device,
+ int trip, enum thermal_trip_type *type)
+{
+ if (trip < 0 || trip >= IWL_MAX_DTS_TRIPS)
+ return -EINVAL;
+
+ *type = THERMAL_TRIP_PASSIVE;
+
+ return 0;
+}
+
+static int iwl_mvm_tzone_set_trip_temp(struct thermal_zone_device *device,
+ int trip, int temp)
+{
+ struct iwl_mvm *mvm = (struct iwl_mvm *)device->devdata;
+ struct iwl_mvm_thermal_device *tzone;
+ int i, ret;
+ s16 temperature;
+
+ mutex_lock(&mvm->mutex);
+
+ if (!mvm->ucode_loaded || !(mvm->cur_ucode == IWL_UCODE_REGULAR)) {
+ ret = -EIO;
+ goto out;
+ }
+
+ if (trip < 0 || trip >= IWL_MAX_DTS_TRIPS) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ if ((temp / 1000) > S16_MAX) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ temperature = (s16)(temp / 1000);
+ tzone = &mvm->tz_device;
+
+ if (!tzone) {
+ ret = -EIO;
+ goto out;
+ }
+
+ /* no updates*/
+ if (tzone->temp_trips[trip] == temperature) {
+ ret = 0;
+ goto out;
+ }
+
+ /* already existing temperature */
+ for (i = 0; i < IWL_MAX_DTS_TRIPS; i++) {
+ if (tzone->temp_trips[i] == temperature) {
+ ret = -EINVAL;
+ goto out;
+ }
+ }
+
+ tzone->temp_trips[trip] = temperature;
+
+ ret = iwl_mvm_send_temp_report_ths_cmd(mvm);
+out:
+ mutex_unlock(&mvm->mutex);
+ return ret;
+}
+
+static struct thermal_zone_device_ops tzone_ops = {
+ .get_temp = iwl_mvm_tzone_get_temp,
+ .get_trip_temp = iwl_mvm_tzone_get_trip_temp,
+ .get_trip_type = iwl_mvm_tzone_get_trip_type,
+ .set_trip_temp = iwl_mvm_tzone_set_trip_temp,
+};
+
+/* make all trips writable */
+#define IWL_WRITABLE_TRIPS_MSK (BIT(IWL_MAX_DTS_TRIPS) - 1)
+
+static void iwl_mvm_thermal_zone_register(struct iwl_mvm *mvm)
+{
+ int i;
+ char name[] = "iwlwifi";
+
+ if (!iwl_mvm_is_tt_in_fw(mvm)) {
+ mvm->tz_device.tzone = NULL;
+
+ return;
+ }
+
+ BUILD_BUG_ON(ARRAY_SIZE(name) >= THERMAL_NAME_LENGTH);
+
+ mvm->tz_device.tzone = thermal_zone_device_register(name,
+ IWL_MAX_DTS_TRIPS,
+ IWL_WRITABLE_TRIPS_MSK,
+ mvm, &tzone_ops,
+ NULL, 0, 0);
+ if (IS_ERR(mvm->tz_device.tzone)) {
+ IWL_DEBUG_TEMP(mvm,
+ "Failed to register to thermal zone (err = %ld)\n",
+ PTR_ERR(mvm->tz_device.tzone));
+ return;
+ }
+
+ /* 0 is a valid temperature,
+ * so initialize the array with S16_MIN which invalid temperature
+ */
+ for (i = 0 ; i < IWL_MAX_DTS_TRIPS; i++)
+ mvm->tz_device.temp_trips[i] = S16_MIN;
+}
+
+static void iwl_mvm_thermal_zone_unregister(struct iwl_mvm *mvm)
+{
+ if (!iwl_mvm_is_tt_in_fw(mvm))
+ return;
+
+ if (mvm->tz_device.tzone) {
+ IWL_DEBUG_TEMP(mvm, "Thermal zone device unregister\n");
+ thermal_zone_device_unregister(mvm->tz_device.tzone);
+ mvm->tz_device.tzone = NULL;
+ }
+}
+#endif /* CONFIG_THERMAL */
+
+void iwl_mvm_thermal_initialize(struct iwl_mvm *mvm, u32 min_backoff)
{
struct iwl_mvm_tt_mgmt *tt = &mvm->thermal_throttle;
tt->dynamic_smps = false;
tt->min_backoff = min_backoff;
INIT_DELAYED_WORK(&tt->ct_kill_exit, check_exit_ctkill);
+
+#ifdef CONFIG_THERMAL
+ iwl_mvm_thermal_zone_register(mvm);
+#endif
}
-void iwl_mvm_tt_exit(struct iwl_mvm *mvm)
+void iwl_mvm_thermal_exit(struct iwl_mvm *mvm)
{
cancel_delayed_work_sync(&mvm->thermal_throttle.ct_kill_exit);
IWL_DEBUG_TEMP(mvm, "Exit Thermal Throttling\n");
+
+#ifdef CONFIG_THERMAL
+ iwl_mvm_thermal_zone_unregister(mvm);
+#endif
}
projects / linux.git / commitdiff