31 static void set_slot_off(struct controller *ctrl)  in set_slot_off()  argument
37 	if (POWER_CTRL(ctrl)) {  in set_slot_off()
38 		pciehp_power_off_slot(ctrl);  in set_slot_off()
48 	pciehp_set_indicators(ctrl, PCI_EXP_SLTCTL_PWR_IND_OFF,  in set_slot_off()
54  * @ctrl: PCIe hotplug controller where board is added
59 static int board_added(struct controller *ctrl)  in board_added()  argument
62 	struct pci_bus *parent = ctrl->pcie->port->subordinate;  in board_added()
64 	if (POWER_CTRL(ctrl)) {  in board_added()
66 		retval = pciehp_power_on_slot(ctrl);  in board_added()
71 	pciehp_set_indicators(ctrl, PCI_EXP_SLTCTL_PWR_IND_BLINK,  in board_added()
75 	retval = pciehp_check_link_status(ctrl);  in board_added()
80 	if (ctrl->power_fault_detected || pciehp_query_power_fault(ctrl)) {  in board_added()
81 		ctrl_err(ctrl, "Slot(%s): Power fault\n", slot_name(ctrl));  in board_added()
86 	retval = pciehp_configure_device(ctrl);  in board_added()
89 			ctrl_err(ctrl, "Cannot add device at %04x:%02x:00\n",  in board_added()
95 	pciehp_set_indicators(ctrl, PCI_EXP_SLTCTL_PWR_IND_ON,  in board_added()
100 	set_slot_off(ctrl);  in board_added()
106  * @ctrl: PCIe hotplug controller where board is being removed
109 static void remove_board(struct controller *ctrl, bool safe_removal)  in remove_board()  argument
111 	pciehp_unconfigure_device(ctrl, safe_removal);  in remove_board()
113 	if (POWER_CTRL(ctrl)) {  in remove_board()
114 		pciehp_power_off_slot(ctrl);  in remove_board()
125 			   &ctrl->pending_events);  in remove_board()
128 	pciehp_set_indicators(ctrl, PCI_EXP_SLTCTL_PWR_IND_OFF,  in remove_board()
132 static int pciehp_enable_slot(struct controller *ctrl);
133 static int pciehp_disable_slot(struct controller *ctrl, bool safe_removal);
135 void pciehp_request(struct controller *ctrl, int action)  in pciehp_request()  argument
137 	atomic_or(action, &ctrl->pending_events);  in pciehp_request()
139 		irq_wake_thread(ctrl->pcie->irq, ctrl);  in pciehp_request()
144 	struct controller *ctrl = container_of(work, struct controller,  in pciehp_queue_pushbutton_work()  local
147 	mutex_lock(&ctrl->state_lock);  in pciehp_queue_pushbutton_work()
148 	switch (ctrl->state) {  in pciehp_queue_pushbutton_work()
150 		pciehp_request(ctrl, DISABLE_SLOT);  in pciehp_queue_pushbutton_work()
153 		pciehp_request(ctrl, PCI_EXP_SLTSTA_PDC);  in pciehp_queue_pushbutton_work()
158 	mutex_unlock(&ctrl->state_lock);  in pciehp_queue_pushbutton_work()
161 void pciehp_handle_button_press(struct controller *ctrl)  in pciehp_handle_button_press()  argument
163 	mutex_lock(&ctrl->state_lock);  in pciehp_handle_button_press()
164 	switch (ctrl->state) {  in pciehp_handle_button_press()
167 		if (ctrl->state == ON_STATE) {  in pciehp_handle_button_press()
168 			ctrl->state = BLINKINGOFF_STATE;  in pciehp_handle_button_press()
169 			ctrl_info(ctrl, "Slot(%s): Powering off due to button press\n",  in pciehp_handle_button_press()
170 				  slot_name(ctrl));  in pciehp_handle_button_press()
172 			ctrl->state = BLINKINGON_STATE;  in pciehp_handle_button_press()
173 			ctrl_info(ctrl, "Slot(%s) Powering on due to button press\n",  in pciehp_handle_button_press()
174 				  slot_name(ctrl));  in pciehp_handle_button_press()
177 		pciehp_set_indicators(ctrl, PCI_EXP_SLTCTL_PWR_IND_BLINK,  in pciehp_handle_button_press()
179 		schedule_delayed_work(&ctrl->button_work, 5 * HZ);  in pciehp_handle_button_press()
188 		ctrl_info(ctrl, "Slot(%s): Button cancel\n", slot_name(ctrl));  in pciehp_handle_button_press()
189 		cancel_delayed_work(&ctrl->button_work);  in pciehp_handle_button_press()
190 		if (ctrl->state == BLINKINGOFF_STATE) {  in pciehp_handle_button_press()
191 			ctrl->state = ON_STATE;  in pciehp_handle_button_press()
192 			pciehp_set_indicators(ctrl, PCI_EXP_SLTCTL_PWR_IND_ON,  in pciehp_handle_button_press()
195 			ctrl->state = OFF_STATE;  in pciehp_handle_button_press()
196 			pciehp_set_indicators(ctrl, PCI_EXP_SLTCTL_PWR_IND_OFF,  in pciehp_handle_button_press()
199 		ctrl_info(ctrl, "Slot(%s): Action canceled due to button press\n",  in pciehp_handle_button_press()
200 			  slot_name(ctrl));  in pciehp_handle_button_press()
203 		ctrl_err(ctrl, "Slot(%s): Ignoring invalid state %#x\n",  in pciehp_handle_button_press()
204 			 slot_name(ctrl), ctrl->state);  in pciehp_handle_button_press()
207 	mutex_unlock(&ctrl->state_lock);  in pciehp_handle_button_press()
210 void pciehp_handle_disable_request(struct controller *ctrl)  in pciehp_handle_disable_request()  argument
212 	mutex_lock(&ctrl->state_lock);  in pciehp_handle_disable_request()
213 	switch (ctrl->state) {  in pciehp_handle_disable_request()
216 		cancel_delayed_work(&ctrl->button_work);  in pciehp_handle_disable_request()
219 	ctrl->state = POWEROFF_STATE;  in pciehp_handle_disable_request()
220 	mutex_unlock(&ctrl->state_lock);  in pciehp_handle_disable_request()
222 	ctrl->request_result = pciehp_disable_slot(ctrl, SAFE_REMOVAL);  in pciehp_handle_disable_request()
225 void pciehp_handle_presence_or_link_change(struct controller *ctrl, u32 events)  in pciehp_handle_presence_or_link_change()  argument
233 	mutex_lock(&ctrl->state_lock);  in pciehp_handle_presence_or_link_change()
234 	switch (ctrl->state) {  in pciehp_handle_presence_or_link_change()
236 		cancel_delayed_work(&ctrl->button_work);  in pciehp_handle_presence_or_link_change()
239 		ctrl->state = POWEROFF_STATE;  in pciehp_handle_presence_or_link_change()
240 		mutex_unlock(&ctrl->state_lock);  in pciehp_handle_presence_or_link_change()
242 			ctrl_info(ctrl, "Slot(%s): Link Down\n",  in pciehp_handle_presence_or_link_change()
243 				  slot_name(ctrl));  in pciehp_handle_presence_or_link_change()
245 			ctrl_info(ctrl, "Slot(%s): Card not present\n",  in pciehp_handle_presence_or_link_change()
246 				  slot_name(ctrl));  in pciehp_handle_presence_or_link_change()
247 		pciehp_disable_slot(ctrl, SURPRISE_REMOVAL);  in pciehp_handle_presence_or_link_change()
250 		mutex_unlock(&ctrl->state_lock);  in pciehp_handle_presence_or_link_change()
255 	mutex_lock(&ctrl->state_lock);  in pciehp_handle_presence_or_link_change()
256 	present = pciehp_card_present(ctrl);  in pciehp_handle_presence_or_link_change()
257 	link_active = pciehp_check_link_active(ctrl);  in pciehp_handle_presence_or_link_change()
259 		mutex_unlock(&ctrl->state_lock);  in pciehp_handle_presence_or_link_change()
263 	switch (ctrl->state) {  in pciehp_handle_presence_or_link_change()
265 		cancel_delayed_work(&ctrl->button_work);  in pciehp_handle_presence_or_link_change()
268 		ctrl->state = POWERON_STATE;  in pciehp_handle_presence_or_link_change()
269 		mutex_unlock(&ctrl->state_lock);  in pciehp_handle_presence_or_link_change()
271 			ctrl_info(ctrl, "Slot(%s): Card present\n",  in pciehp_handle_presence_or_link_change()
272 				  slot_name(ctrl));  in pciehp_handle_presence_or_link_change()
274 			ctrl_info(ctrl, "Slot(%s): Link Up\n",  in pciehp_handle_presence_or_link_change()
275 				  slot_name(ctrl));  in pciehp_handle_presence_or_link_change()
276 		ctrl->request_result = pciehp_enable_slot(ctrl);  in pciehp_handle_presence_or_link_change()
279 		mutex_unlock(&ctrl->state_lock);  in pciehp_handle_presence_or_link_change()
284 static int __pciehp_enable_slot(struct controller *ctrl)  in __pciehp_enable_slot()  argument
288 	if (MRL_SENS(ctrl)) {  in __pciehp_enable_slot()
289 		pciehp_get_latch_status(ctrl, &getstatus);  in __pciehp_enable_slot()
291 			ctrl_info(ctrl, "Slot(%s): Latch open\n",  in __pciehp_enable_slot()
292 				  slot_name(ctrl));  in __pciehp_enable_slot()
297 	if (POWER_CTRL(ctrl)) {  in __pciehp_enable_slot()
298 		pciehp_get_power_status(ctrl, &getstatus);  in __pciehp_enable_slot()
300 			ctrl_info(ctrl, "Slot(%s): Already enabled\n",  in __pciehp_enable_slot()
301 				  slot_name(ctrl));  in __pciehp_enable_slot()
306 	return board_added(ctrl);  in __pciehp_enable_slot()
309 static int pciehp_enable_slot(struct controller *ctrl)  in pciehp_enable_slot()  argument
313 	pm_runtime_get_sync(&ctrl->pcie->port->dev);  in pciehp_enable_slot()
314 	ret = __pciehp_enable_slot(ctrl);  in pciehp_enable_slot()
315 	if (ret && ATTN_BUTTN(ctrl))  in pciehp_enable_slot()
317 		pciehp_set_indicators(ctrl, PCI_EXP_SLTCTL_PWR_IND_OFF,  in pciehp_enable_slot()
319 	pm_runtime_put(&ctrl->pcie->port->dev);  in pciehp_enable_slot()
321 	mutex_lock(&ctrl->state_lock);  in pciehp_enable_slot()
322 	ctrl->state = ret ? OFF_STATE : ON_STATE;  in pciehp_enable_slot()
323 	mutex_unlock(&ctrl->state_lock);  in pciehp_enable_slot()
328 static int __pciehp_disable_slot(struct controller *ctrl, bool safe_removal)  in __pciehp_disable_slot()  argument
332 	if (POWER_CTRL(ctrl)) {  in __pciehp_disable_slot()
333 		pciehp_get_power_status(ctrl, &getstatus);  in __pciehp_disable_slot()
335 			ctrl_info(ctrl, "Slot(%s): Already disabled\n",  in __pciehp_disable_slot()
336 				  slot_name(ctrl));  in __pciehp_disable_slot()
341 	remove_board(ctrl, safe_removal);  in __pciehp_disable_slot()
345 static int pciehp_disable_slot(struct controller *ctrl, bool safe_removal)  in pciehp_disable_slot()  argument
349 	pm_runtime_get_sync(&ctrl->pcie->port->dev);  in pciehp_disable_slot()
350 	ret = __pciehp_disable_slot(ctrl, safe_removal);  in pciehp_disable_slot()
351 	pm_runtime_put(&ctrl->pcie->port->dev);  in pciehp_disable_slot()
353 	mutex_lock(&ctrl->state_lock);  in pciehp_disable_slot()
354 	ctrl->state = OFF_STATE;  in pciehp_disable_slot()
355 	mutex_unlock(&ctrl->state_lock);  in pciehp_disable_slot()
362 	struct controller *ctrl = to_ctrl(hotplug_slot);  in pciehp_sysfs_enable_slot()  local
364 	mutex_lock(&ctrl->state_lock);  in pciehp_sysfs_enable_slot()
365 	switch (ctrl->state) {  in pciehp_sysfs_enable_slot()
368 		mutex_unlock(&ctrl->state_lock);  in pciehp_sysfs_enable_slot()
373 		ctrl->request_result = -ENODEV;  in pciehp_sysfs_enable_slot()
374 		pciehp_request(ctrl, PCI_EXP_SLTSTA_PDC);  in pciehp_sysfs_enable_slot()
375 		wait_event(ctrl->requester,  in pciehp_sysfs_enable_slot()
376 			   !atomic_read(&ctrl->pending_events) &&  in pciehp_sysfs_enable_slot()
377 			   !ctrl->ist_running);  in pciehp_sysfs_enable_slot()
378 		return ctrl->request_result;  in pciehp_sysfs_enable_slot()
380 		ctrl_info(ctrl, "Slot(%s): Already in powering on state\n",  in pciehp_sysfs_enable_slot()
381 			  slot_name(ctrl));  in pciehp_sysfs_enable_slot()
386 		ctrl_info(ctrl, "Slot(%s): Already enabled\n",  in pciehp_sysfs_enable_slot()
387 			  slot_name(ctrl));  in pciehp_sysfs_enable_slot()
390 		ctrl_err(ctrl, "Slot(%s): Invalid state %#x\n",  in pciehp_sysfs_enable_slot()
391 			 slot_name(ctrl), ctrl->state);  in pciehp_sysfs_enable_slot()
394 	mutex_unlock(&ctrl->state_lock);  in pciehp_sysfs_enable_slot()
401 	struct controller *ctrl = to_ctrl(hotplug_slot);  in pciehp_sysfs_disable_slot()  local
403 	mutex_lock(&ctrl->state_lock);  in pciehp_sysfs_disable_slot()
404 	switch (ctrl->state) {  in pciehp_sysfs_disable_slot()
407 		mutex_unlock(&ctrl->state_lock);  in pciehp_sysfs_disable_slot()
408 		pciehp_request(ctrl, DISABLE_SLOT);  in pciehp_sysfs_disable_slot()
409 		wait_event(ctrl->requester,  in pciehp_sysfs_disable_slot()
410 			   !atomic_read(&ctrl->pending_events) &&  in pciehp_sysfs_disable_slot()
411 			   !ctrl->ist_running);  in pciehp_sysfs_disable_slot()
412 		return ctrl->request_result;  in pciehp_sysfs_disable_slot()
414 		ctrl_info(ctrl, "Slot(%s): Already in powering off state\n",  in pciehp_sysfs_disable_slot()
415 			  slot_name(ctrl));  in pciehp_sysfs_disable_slot()
420 		ctrl_info(ctrl, "Slot(%s): Already disabled\n",  in pciehp_sysfs_disable_slot()
421 			  slot_name(ctrl));  in pciehp_sysfs_disable_slot()
424 		ctrl_err(ctrl, "Slot(%s): Invalid state %#x\n",  in pciehp_sysfs_disable_slot()
425 			 slot_name(ctrl), ctrl->state);  in pciehp_sysfs_disable_slot()
428 	mutex_unlock(&ctrl->state_lock);  in pciehp_sysfs_disable_slot()