1 /* SPDX-License-Identifier: GPL-2.0+ */
6  * Copyright (C) 2001 Greg Kroah-Hartman ([email protected])
8  * Copyright (C) 2003-2004 Intel Corporation
35 #define ctrl_dbg(ctrl, format, arg...)					\  argument
36 	pci_dbg(ctrl->pcie->port, format, ## arg)
37 #define ctrl_err(ctrl, format, arg...)					\  argument
38 	pci_err(ctrl->pcie->port, format, ## arg)
39 #define ctrl_info(ctrl, format, arg...)					\  argument
40 	pci_info(ctrl->pcie->port, format, ## arg)
41 #define ctrl_warn(ctrl, format, arg...)					\  argument
42 	pci_warn(ctrl->pcie->port, format, ## arg)
47  * struct controller - PCIe hotplug controller
50  *	(PCIe r6.2 sec 7.9.3); used to determine whether a hotplugged device
51  *	was replaced with a different one during system sleep
53  * @inband_presence_disabled: In-Band Presence Detect Disable supported by
59  *	the next write is allowed 1 second later, absent a Command Completed
62  *	on reception of a Command Completed event
63  * @queue: wait queue to wake up on reception of a Command Completed event,
68  * @power_fault_detected: whether a power fault was detected by the hardware
80  *	Status register during a slot reset which may cause them to flap
88  * PCIe hotplug has a 1:1 relationship between controller and slot, hence
144  * hence must be greater than its 16-bit width.
146  * %DISABLE_SLOT: Disable the slot in response to a user request via sysfs or
156 #define ATTN_BUTTN(ctrl)	((ctrl)->slot_cap & PCI_EXP_SLTCAP_ABP)  argument
157 #define POWER_CTRL(ctrl)	((ctrl)->slot_cap & PCI_EXP_SLTCAP_PCP)  argument
158 #define MRL_SENS(ctrl)		((ctrl)->slot_cap & PCI_EXP_SLTCAP_MRLSP)  argument
159 #define ATTN_LED(ctrl)		((ctrl)->slot_cap & PCI_EXP_SLTCAP_AIP)  argument
160 #define PWR_LED(ctrl)		((ctrl)->slot_cap & PCI_EXP_SLTCAP_PIP)  argument
161 #define NO_CMD_CMPL(ctrl)	((ctrl)->slot_cap & PCI_EXP_SLTCAP_NCCS)  argument
162 #define PSN(ctrl)		(((ctrl)->slot_cap & PCI_EXP_SLTCAP_PSN) >> 19)  argument
164 void pciehp_request(struct controller *ctrl, int action);
165 void pciehp_handle_button_press(struct controller *ctrl);
166 void pciehp_handle_disable_request(struct controller *ctrl);
167 void pciehp_handle_presence_or_link_change(struct controller *ctrl, u32 events);
168 int pciehp_configure_device(struct controller *ctrl);
169 void pciehp_unconfigure_device(struct controller *ctrl, bool presence);
172 int pcie_init_notification(struct controller *ctrl);
173 void pcie_shutdown_notification(struct controller *ctrl);
174 void pcie_clear_hotplug_events(struct controller *ctrl);
175 void pcie_enable_interrupt(struct controller *ctrl);
176 void pcie_disable_interrupt(struct controller *ctrl);
177 int pciehp_power_on_slot(struct controller *ctrl);
178 void pciehp_power_off_slot(struct controller *ctrl);
179 void pciehp_get_power_status(struct controller *ctrl, u8 *status);
181 #define INDICATOR_NOOP -1	/* Leave indicator unchanged */
182 void pciehp_set_indicators(struct controller *ctrl, int pwr, int attn);
184 void pciehp_get_latch_status(struct controller *ctrl, u8 *status);
185 int pciehp_query_power_fault(struct controller *ctrl);
186 int pciehp_card_present(struct controller *ctrl);
187 int pciehp_card_present_or_link_active(struct controller *ctrl);
188 int pciehp_check_link_status(struct controller *ctrl);
189 int pciehp_check_link_active(struct controller *ctrl);
190 void pciehp_release_ctrl(struct controller *ctrl);
201 static inline const char *slot_name(struct controller *ctrl)  in slot_name()  argument
203 	return hotplug_slot_name(&ctrl->hotplug_slot);  in slot_name()