9  * Copyright(c) 2018 - 2020 Intel Corporation
23  * Copyright(c) 2018 - 2020 Intel Corporation
30  *  * Redistributions of source code must retain the above copyright
53 #include "iwl-trans.h"
54 #include "iwl-prph.h"
55 #include "iwl-context-info.h"
56 #include "iwl-context-info-gen3.h"
62  * (e.g. after platform boot, or shutdown via iwl_pcie_apm_stop())
88 	 * wake device's PCI Express link L1a -> L0s  in iwl_pcie_gen2_apm_init()
95 	ret = iwl_finish_nic_init(trans, trans->trans_cfg);  in iwl_pcie_gen2_apm_init()
99 	set_bit(STATUS_DEVICE_ENABLED, &trans->status);  in iwl_pcie_gen2_apm_init()
106 	IWL_DEBUG_INFO(trans, "Stop card, put in low power state\n");  in iwl_pcie_gen2_apm_stop()
109 		if (!test_bit(STATUS_DEVICE_ENABLED, &trans->status))  in iwl_pcie_gen2_apm_stop()
124 	clear_bit(STATUS_DEVICE_ENABLED, &trans->status);  in iwl_pcie_gen2_apm_stop()
133 	 * D0A* (powered-up Active) --> D0U* (Uninitialized) state.  in iwl_pcie_gen2_apm_stop()
142 	lockdep_assert_held(&trans_pcie->mutex);  in _iwl_trans_pcie_gen2_stop_device()
144 	if (trans_pcie->is_down)  in _iwl_trans_pcie_gen2_stop_device()
147 	trans_pcie->is_down = true;  in _iwl_trans_pcie_gen2_stop_device()
162 	if (test_and_clear_bit(STATUS_DEVICE_ENABLED, &trans->status)) {  in _iwl_trans_pcie_gen2_stop_device()
170 	if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210)  in _iwl_trans_pcie_gen2_stop_device()
179 	/* Stop the device, and put it in low power state */  in _iwl_trans_pcie_gen2_stop_device()
185 	 * Upon stop, the IVAR table gets erased, so msi-x won't  in _iwl_trans_pcie_gen2_stop_device()
186 	 * work. This causes a bug in RF-KILL flows, since the interrupt  in _iwl_trans_pcie_gen2_stop_device()
198 	 * should be masked. Re-ACK all the interrupts here.  in _iwl_trans_pcie_gen2_stop_device()
203 	clear_bit(STATUS_SYNC_HCMD_ACTIVE, &trans->status);  in _iwl_trans_pcie_gen2_stop_device()
204 	clear_bit(STATUS_INT_ENABLED, &trans->status);  in _iwl_trans_pcie_gen2_stop_device()
205 	clear_bit(STATUS_TPOWER_PMI, &trans->status);  in _iwl_trans_pcie_gen2_stop_device()
213 	/* re-take ownership to prevent other users from stealing the device */  in _iwl_trans_pcie_gen2_stop_device()
222 	mutex_lock(&trans_pcie->mutex);  in iwl_trans_pcie_gen2_stop_device()
223 	trans_pcie->opmode_down = true;  in iwl_trans_pcie_gen2_stop_device()
224 	was_in_rfkill = test_bit(STATUS_RFKILL_OPMODE, &trans->status);  in iwl_trans_pcie_gen2_stop_device()
227 	mutex_unlock(&trans_pcie->mutex);  in iwl_trans_pcie_gen2_stop_device()
234 			       trans->cfg->min_txq_size);  in iwl_pcie_gen2_nic_init()
236 	/* TODO: most of the logic can be removed in A0 - but not in Z0 */  in iwl_pcie_gen2_nic_init()
237 	spin_lock(&trans_pcie->irq_lock);  in iwl_pcie_gen2_nic_init()
239 	spin_unlock(&trans_pcie->irq_lock);  in iwl_pcie_gen2_nic_init()
241 	iwl_op_mode_nic_config(trans->op_mode);  in iwl_pcie_gen2_nic_init()
245 		return -ENOMEM;  in iwl_pcie_gen2_nic_init()
248 	if (iwl_txq_gen2_init(trans, trans->txqs.cmd.q_id, queue_size))  in iwl_pcie_gen2_nic_init()
249 		return -ENOMEM;  in iwl_pcie_gen2_nic_init()
265 	memset(trans->txqs.queue_stopped, 0,  in iwl_trans_pcie_gen2_fw_alive()
266 	       sizeof(trans->txqs.queue_stopped));  in iwl_trans_pcie_gen2_fw_alive()
267 	memset(trans->txqs.queue_used, 0, sizeof(trans->txqs.queue_used));  in iwl_trans_pcie_gen2_fw_alive()
275 	 * Re-enable all the interrupts, including the RF-Kill one, now that  in iwl_trans_pcie_gen2_fw_alive()
279 	mutex_lock(&trans_pcie->mutex);  in iwl_trans_pcie_gen2_fw_alive()
281 	mutex_unlock(&trans_pcie->mutex);  in iwl_trans_pcie_gen2_fw_alive()
294 		ret = -EIO;  in iwl_trans_pcie_gen2_start_fw()
303 	 * We enabled the RF-Kill interrupt and the handler may very  in iwl_trans_pcie_gen2_start_fw()
312 	mutex_lock(&trans_pcie->mutex);  in iwl_trans_pcie_gen2_start_fw()
317 		ret = -ERFKILL;  in iwl_trans_pcie_gen2_start_fw()
322 	if (trans_pcie->is_down) {  in iwl_trans_pcie_gen2_start_fw()
325 		ret = -EIO;  in iwl_trans_pcie_gen2_start_fw()
343 	if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210)  in iwl_trans_pcie_gen2_start_fw()
350 	/* re-check RF-Kill state since we may have missed the interrupt */  in iwl_trans_pcie_gen2_start_fw()
353 		ret = -ERFKILL;  in iwl_trans_pcie_gen2_start_fw()
356 	mutex_unlock(&trans_pcie->mutex);  in iwl_trans_pcie_gen2_start_fw()