iwlwifi: pcie: let the Manageability Engine know when we leave
When the driver is unload, the Manageability Engine should
know about that - send an event to inform it about this
event.
Reviewed-by: Reuven Borok <reuven.borok@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c
index 5d79a1f..4b42de3 100644
--- a/drivers/net/wireless/iwlwifi/pcie/trans.c
+++ b/drivers/net/wireless/iwlwifi/pcie/trans.c
@@ -443,10 +443,25 @@
return ret;
}
-static void iwl_pcie_apm_stop(struct iwl_trans *trans)
+static void iwl_pcie_apm_stop(struct iwl_trans *trans, bool op_mode_leave)
{
IWL_DEBUG_INFO(trans, "Stop card, put in low power state\n");
+ if (op_mode_leave) {
+ if (!test_bit(STATUS_DEVICE_ENABLED, &trans->status))
+ iwl_pcie_apm_init(trans);
+
+ /* inform ME that we are leaving */
+ if (trans->cfg->device_family == IWL_DEVICE_FAMILY_7000)
+ iwl_set_bits_prph(trans, APMG_PCIDEV_STT_REG,
+ APMG_PCIDEV_STT_VAL_WAKE_ME);
+ else if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000)
+ iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG,
+ CSR_HW_IF_CONFIG_REG_PREPARE |
+ CSR_HW_IF_CONFIG_REG_ENABLE_PME);
+ mdelay(5);
+ }
+
clear_bit(STATUS_DEVICE_ENABLED, &trans->status);
/* Stop device's DMA activity */
@@ -1010,7 +1025,7 @@
CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
/* Stop the device, and put it in low power state */
- iwl_pcie_apm_stop(trans);
+ iwl_pcie_apm_stop(trans, false);
/* Upon stop, the APM issues an interrupt if HW RF kill is set.
* Clean again the interrupt here
@@ -1187,7 +1202,7 @@
iwl_disable_interrupts(trans);
spin_unlock(&trans_pcie->irq_lock);
- iwl_pcie_apm_stop(trans);
+ iwl_pcie_apm_stop(trans, true);
spin_lock(&trans_pcie->irq_lock);
iwl_disable_interrupts(trans);