Lines Matching refs:ctrl
29 static inline struct pci_dev *ctrl_dev(struct controller *ctrl) in ctrl_dev() argument
31 return ctrl->pcie->port; in ctrl_dev()
38 static inline int pciehp_request_irq(struct controller *ctrl) in pciehp_request_irq() argument
40 int retval, irq = ctrl->pcie->irq; in pciehp_request_irq()
43 ctrl->poll_thread = kthread_run(&pciehp_poll, ctrl, in pciehp_request_irq()
45 slot_name(ctrl)); in pciehp_request_irq()
46 return PTR_ERR_OR_ZERO(ctrl->poll_thread); in pciehp_request_irq()
51 IRQF_SHARED, "pciehp", ctrl); in pciehp_request_irq()
53 ctrl_err(ctrl, "Cannot get irq %d for the hotplug controller\n", in pciehp_request_irq()
58 static inline void pciehp_free_irq(struct controller *ctrl) in pciehp_free_irq() argument
61 kthread_stop(ctrl->poll_thread); in pciehp_free_irq()
63 free_irq(ctrl->pcie->irq, ctrl); in pciehp_free_irq()
66 static int pcie_poll_cmd(struct controller *ctrl, int timeout) in pcie_poll_cmd() argument
68 struct pci_dev *pdev = ctrl_dev(ctrl); in pcie_poll_cmd()
74 ctrl_info(ctrl, "%s: no response from device\n", in pcie_poll_cmd()
92 static void pcie_wait_cmd(struct controller *ctrl) in pcie_wait_cmd() argument
96 unsigned long cmd_timeout = ctrl->cmd_started + duration; in pcie_wait_cmd()
104 if (NO_CMD_CMPL(ctrl)) in pcie_wait_cmd()
107 if (!ctrl->cmd_busy) in pcie_wait_cmd()
120 if (ctrl->slot_ctrl & PCI_EXP_SLTCTL_HPIE && in pcie_wait_cmd()
121 ctrl->slot_ctrl & PCI_EXP_SLTCTL_CCIE) in pcie_wait_cmd()
122 rc = wait_event_timeout(ctrl->queue, !ctrl->cmd_busy, timeout); in pcie_wait_cmd()
124 rc = pcie_poll_cmd(ctrl, jiffies_to_msecs(timeout)); in pcie_wait_cmd()
127 ctrl_info(ctrl, "Timeout on hotplug command %#06x (issued %u msec ago)\n", in pcie_wait_cmd()
128 ctrl->slot_ctrl, in pcie_wait_cmd()
129 jiffies_to_msecs(jiffies - ctrl->cmd_started)); in pcie_wait_cmd()
137 static void pcie_do_write_cmd(struct controller *ctrl, u16 cmd, in pcie_do_write_cmd() argument
140 struct pci_dev *pdev = ctrl_dev(ctrl); in pcie_do_write_cmd()
143 mutex_lock(&ctrl->ctrl_lock); in pcie_do_write_cmd()
148 pcie_wait_cmd(ctrl); in pcie_do_write_cmd()
152 ctrl_info(ctrl, "%s: no response from device\n", __func__); in pcie_do_write_cmd()
159 ctrl->cmd_busy = 1; in pcie_do_write_cmd()
161 ctrl->slot_ctrl = slot_ctrl; in pcie_do_write_cmd()
163 ctrl->cmd_started = jiffies; in pcie_do_write_cmd()
174 ctrl->cmd_busy = 0; in pcie_do_write_cmd()
181 pcie_wait_cmd(ctrl); in pcie_do_write_cmd()
184 mutex_unlock(&ctrl->ctrl_lock); in pcie_do_write_cmd()
193 static void pcie_write_cmd(struct controller *ctrl, u16 cmd, u16 mask) in pcie_write_cmd() argument
195 pcie_do_write_cmd(ctrl, cmd, mask, true); in pcie_write_cmd()
199 static void pcie_write_cmd_nowait(struct controller *ctrl, u16 cmd, u16 mask) in pcie_write_cmd_nowait() argument
201 pcie_do_write_cmd(ctrl, cmd, mask, false); in pcie_write_cmd_nowait()
204 bool pciehp_check_link_active(struct controller *ctrl) in pciehp_check_link_active() argument
206 struct pci_dev *pdev = ctrl_dev(ctrl); in pciehp_check_link_active()
214 ctrl_dbg(ctrl, "%s: lnk_status = %x\n", __func__, lnk_status); in pciehp_check_link_active()
245 int pciehp_check_link_status(struct controller *ctrl) in pciehp_check_link_status() argument
247 struct pci_dev *pdev = ctrl_dev(ctrl); in pciehp_check_link_status()
254 found = pci_bus_check_dev(ctrl->pcie->port->subordinate, in pciehp_check_link_status()
260 &ctrl->pending_events); in pciehp_check_link_status()
263 ctrl_dbg(ctrl, "%s: lnk_status = %x\n", __func__, lnk_status); in pciehp_check_link_status()
266 ctrl_err(ctrl, "link training error: status %#06x\n", in pciehp_check_link_status()
271 pcie_update_link_speed(ctrl->pcie->port->subordinate, lnk_status); in pciehp_check_link_status()
279 static int __pciehp_link_set(struct controller *ctrl, bool enable) in __pciehp_link_set() argument
281 struct pci_dev *pdev = ctrl_dev(ctrl); in __pciehp_link_set()
292 ctrl_dbg(ctrl, "%s: lnk_ctrl = %x\n", __func__, lnk_ctrl); in __pciehp_link_set()
296 static int pciehp_link_enable(struct controller *ctrl) in pciehp_link_enable() argument
298 return __pciehp_link_set(ctrl, true); in pciehp_link_enable()
304 struct controller *ctrl = to_ctrl(hotplug_slot); in pciehp_get_raw_indicator_status() local
305 struct pci_dev *pdev = ctrl_dev(ctrl); in pciehp_get_raw_indicator_status()
317 struct controller *ctrl = to_ctrl(hotplug_slot); in pciehp_get_attention_status() local
318 struct pci_dev *pdev = ctrl_dev(ctrl); in pciehp_get_attention_status()
324 ctrl_dbg(ctrl, "%s: SLOTCTRL %x, value read %x\n", __func__, in pciehp_get_attention_status()
325 pci_pcie_cap(ctrl->pcie->port) + PCI_EXP_SLTCTL, slot_ctrl); in pciehp_get_attention_status()
345 void pciehp_get_power_status(struct controller *ctrl, u8 *status) in pciehp_get_power_status() argument
347 struct pci_dev *pdev = ctrl_dev(ctrl); in pciehp_get_power_status()
351 ctrl_dbg(ctrl, "%s: SLOTCTRL %x value read %x\n", __func__, in pciehp_get_power_status()
352 pci_pcie_cap(ctrl->pcie->port) + PCI_EXP_SLTCTL, slot_ctrl); in pciehp_get_power_status()
367 void pciehp_get_latch_status(struct controller *ctrl, u8 *status) in pciehp_get_latch_status() argument
369 struct pci_dev *pdev = ctrl_dev(ctrl); in pciehp_get_latch_status()
376 bool pciehp_card_present(struct controller *ctrl) in pciehp_card_present() argument
378 struct pci_dev *pdev = ctrl_dev(ctrl); in pciehp_card_present()
394 bool pciehp_card_present_or_link_active(struct controller *ctrl) in pciehp_card_present_or_link_active() argument
396 return pciehp_card_present(ctrl) || pciehp_check_link_active(ctrl); in pciehp_card_present_or_link_active()
399 int pciehp_query_power_fault(struct controller *ctrl) in pciehp_query_power_fault() argument
401 struct pci_dev *pdev = ctrl_dev(ctrl); in pciehp_query_power_fault()
411 struct controller *ctrl = to_ctrl(hotplug_slot); in pciehp_set_raw_indicator_status() local
412 struct pci_dev *pdev = ctrl_dev(ctrl); in pciehp_set_raw_indicator_status()
415 pcie_write_cmd_nowait(ctrl, status << 6, in pciehp_set_raw_indicator_status()
436 void pciehp_set_indicators(struct controller *ctrl, int pwr, int attn) in pciehp_set_indicators() argument
440 if (PWR_LED(ctrl) && pwr != INDICATOR_NOOP) { in pciehp_set_indicators()
445 if (ATTN_LED(ctrl) && attn != INDICATOR_NOOP) { in pciehp_set_indicators()
451 pcie_write_cmd_nowait(ctrl, cmd, mask); in pciehp_set_indicators()
452 ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n", __func__, in pciehp_set_indicators()
453 pci_pcie_cap(ctrl->pcie->port) + PCI_EXP_SLTCTL, cmd); in pciehp_set_indicators()
457 int pciehp_power_on_slot(struct controller *ctrl) in pciehp_power_on_slot() argument
459 struct pci_dev *pdev = ctrl_dev(ctrl); in pciehp_power_on_slot()
468 ctrl->power_fault_detected = 0; in pciehp_power_on_slot()
470 pcie_write_cmd(ctrl, PCI_EXP_SLTCTL_PWR_ON, PCI_EXP_SLTCTL_PCC); in pciehp_power_on_slot()
471 ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n", __func__, in pciehp_power_on_slot()
472 pci_pcie_cap(ctrl->pcie->port) + PCI_EXP_SLTCTL, in pciehp_power_on_slot()
475 retval = pciehp_link_enable(ctrl); in pciehp_power_on_slot()
477 ctrl_err(ctrl, "%s: Can not enable the link!\n", __func__); in pciehp_power_on_slot()
482 void pciehp_power_off_slot(struct controller *ctrl) in pciehp_power_off_slot() argument
484 pcie_write_cmd(ctrl, PCI_EXP_SLTCTL_PWR_OFF, PCI_EXP_SLTCTL_PCC); in pciehp_power_off_slot()
485 ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n", __func__, in pciehp_power_off_slot()
486 pci_pcie_cap(ctrl->pcie->port) + PCI_EXP_SLTCTL, in pciehp_power_off_slot()
492 struct controller *ctrl = (struct controller *)dev_id; in pciehp_isr() local
493 struct pci_dev *pdev = ctrl_dev(ctrl); in pciehp_isr()
502 (!(ctrl->slot_ctrl & PCI_EXP_SLTCTL_HPIE) && !pciehp_poll_mode)) in pciehp_isr()
515 atomic_or(RERUN_ISR, &ctrl->pending_events); in pciehp_isr()
522 ctrl_info(ctrl, "%s: no response from device\n", __func__); in pciehp_isr()
540 if (ctrl->power_fault_detected) in pciehp_isr()
550 ctrl_dbg(ctrl, "pending interrupts %#06x from Slot Status\n", events); in pciehp_isr()
559 ctrl->cmd_busy = 0; in pciehp_isr()
561 wake_up(&ctrl->queue); in pciehp_isr()
570 ctrl_dbg(ctrl, "ignoring hotplug event %#06x\n", events); in pciehp_isr()
575 atomic_or(events, &ctrl->pending_events); in pciehp_isr()
581 struct controller *ctrl = (struct controller *)dev_id; in pciehp_ist() local
582 struct pci_dev *pdev = ctrl_dev(ctrl); in pciehp_ist()
589 if (atomic_fetch_and(~RERUN_ISR, &ctrl->pending_events) & RERUN_ISR) { in pciehp_ist()
599 events = atomic_xchg(&ctrl->pending_events, 0); in pciehp_ist()
607 ctrl_info(ctrl, "Slot(%s): Attention button pressed\n", in pciehp_ist()
608 slot_name(ctrl)); in pciehp_ist()
609 pciehp_handle_button_press(ctrl); in pciehp_ist()
613 if ((events & PCI_EXP_SLTSTA_PFD) && !ctrl->power_fault_detected) { in pciehp_ist()
614 ctrl->power_fault_detected = 1; in pciehp_ist()
615 ctrl_err(ctrl, "Slot(%s): Power fault\n", slot_name(ctrl)); in pciehp_ist()
616 pciehp_set_indicators(ctrl, PCI_EXP_SLTCTL_PWR_IND_OFF, in pciehp_ist()
624 down_read(&ctrl->reset_lock); in pciehp_ist()
626 pciehp_handle_disable_request(ctrl); in pciehp_ist()
628 pciehp_handle_presence_or_link_change(ctrl, events); in pciehp_ist()
629 up_read(&ctrl->reset_lock); in pciehp_ist()
632 wake_up(&ctrl->requester); in pciehp_ist()
638 struct controller *ctrl = data; in pciehp_poll() local
644 while (pciehp_isr(IRQ_NOTCONNECTED, ctrl) == IRQ_WAKE_THREAD || in pciehp_poll()
645 atomic_read(&ctrl->pending_events)) in pciehp_poll()
646 pciehp_ist(IRQ_NOTCONNECTED, ctrl); in pciehp_poll()
657 static void pcie_enable_notification(struct controller *ctrl) in pcie_enable_notification() argument
678 if (ATTN_BUTTN(ctrl)) in pcie_enable_notification()
690 pcie_write_cmd_nowait(ctrl, cmd, mask); in pcie_enable_notification()
691 ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n", __func__, in pcie_enable_notification()
692 pci_pcie_cap(ctrl->pcie->port) + PCI_EXP_SLTCTL, cmd); in pcie_enable_notification()
695 static void pcie_disable_notification(struct controller *ctrl) in pcie_disable_notification() argument
703 pcie_write_cmd(ctrl, 0, mask); in pcie_disable_notification()
704 ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n", __func__, in pcie_disable_notification()
705 pci_pcie_cap(ctrl->pcie->port) + PCI_EXP_SLTCTL, 0); in pcie_disable_notification()
708 void pcie_clear_hotplug_events(struct controller *ctrl) in pcie_clear_hotplug_events() argument
710 pcie_capability_write_word(ctrl_dev(ctrl), PCI_EXP_SLTSTA, in pcie_clear_hotplug_events()
714 void pcie_enable_interrupt(struct controller *ctrl) in pcie_enable_interrupt() argument
719 pcie_write_cmd(ctrl, mask, mask); in pcie_enable_interrupt()
722 void pcie_disable_interrupt(struct controller *ctrl) in pcie_disable_interrupt() argument
734 pcie_write_cmd(ctrl, 0, mask); in pcie_disable_interrupt()
747 struct controller *ctrl = to_ctrl(hotplug_slot); in pciehp_reset_slot() local
748 struct pci_dev *pdev = ctrl_dev(ctrl); in pciehp_reset_slot()
755 down_write(&ctrl->reset_lock); in pciehp_reset_slot()
757 if (!ATTN_BUTTN(ctrl)) { in pciehp_reset_slot()
764 pcie_write_cmd(ctrl, 0, ctrl_mask); in pciehp_reset_slot()
765 ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n", __func__, in pciehp_reset_slot()
766 pci_pcie_cap(ctrl->pcie->port) + PCI_EXP_SLTCTL, 0); in pciehp_reset_slot()
768 rc = pci_bridge_secondary_bus_reset(ctrl->pcie->port); in pciehp_reset_slot()
771 pcie_write_cmd_nowait(ctrl, ctrl_mask, ctrl_mask); in pciehp_reset_slot()
772 ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n", __func__, in pciehp_reset_slot()
773 pci_pcie_cap(ctrl->pcie->port) + PCI_EXP_SLTCTL, ctrl_mask); in pciehp_reset_slot()
775 up_write(&ctrl->reset_lock); in pciehp_reset_slot()
779 int pcie_init_notification(struct controller *ctrl) in pcie_init_notification() argument
781 if (pciehp_request_irq(ctrl)) in pcie_init_notification()
783 pcie_enable_notification(ctrl); in pcie_init_notification()
784 ctrl->notification_enabled = 1; in pcie_init_notification()
788 void pcie_shutdown_notification(struct controller *ctrl) in pcie_shutdown_notification() argument
790 if (ctrl->notification_enabled) { in pcie_shutdown_notification()
791 pcie_disable_notification(ctrl); in pcie_shutdown_notification()
792 pciehp_free_irq(ctrl); in pcie_shutdown_notification()
793 ctrl->notification_enabled = 0; in pcie_shutdown_notification()
797 static inline void dbg_ctrl(struct controller *ctrl) in dbg_ctrl() argument
799 struct pci_dev *pdev = ctrl->pcie->port; in dbg_ctrl()
802 ctrl_dbg(ctrl, "Slot Capabilities : 0x%08x\n", ctrl->slot_cap); in dbg_ctrl()
804 ctrl_dbg(ctrl, "Slot Status : 0x%04x\n", reg16); in dbg_ctrl()
806 ctrl_dbg(ctrl, "Slot Control : 0x%04x\n", reg16); in dbg_ctrl()
813 struct controller *ctrl; in pcie_init() local
819 ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL); in pcie_init()
820 if (!ctrl) in pcie_init()
823 ctrl->pcie = dev; in pcie_init()
836 ctrl->slot_cap = slot_cap; in pcie_init()
837 mutex_init(&ctrl->ctrl_lock); in pcie_init()
838 mutex_init(&ctrl->state_lock); in pcie_init()
839 init_rwsem(&ctrl->reset_lock); in pcie_init()
840 init_waitqueue_head(&ctrl->requester); in pcie_init()
841 init_waitqueue_head(&ctrl->queue); in pcie_init()
842 INIT_DELAYED_WORK(&ctrl->button_work, pciehp_queue_pushbutton_work); in pcie_init()
843 dbg_ctrl(ctrl); in pcie_init()
846 ctrl->state = list_empty(&subordinate->devices) ? OFF_STATE : ON_STATE; in pcie_init()
858 …ctrl_info(ctrl, "Slot #%d AttnBtn%c PwrCtrl%c MRL%c AttnInd%c PwrInd%c HotPlug%c Surprise%c Interl… in pcie_init()
876 if (POWER_CTRL(ctrl)) { in pcie_init()
877 pciehp_get_power_status(ctrl, &poweron); in pcie_init()
878 if (!pciehp_card_present_or_link_active(ctrl) && poweron) { in pcie_init()
879 pcie_disable_notification(ctrl); in pcie_init()
880 pciehp_power_off_slot(ctrl); in pcie_init()
884 return ctrl; in pcie_init()
887 void pciehp_release_ctrl(struct controller *ctrl) in pciehp_release_ctrl() argument
889 cancel_delayed_work_sync(&ctrl->button_work); in pciehp_release_ctrl()
890 kfree(ctrl); in pciehp_release_ctrl()