/* * PCI Express Hot Plug Controller Driver * * Copyright (C) 1995,2001 Compaq Computer Corporation * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com) * Copyright (C) 2001 IBM Corp. * Copyright (C) 2003-2004 Intel Corporation * * All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or (at * your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or * NON INFRINGEMENT.  See the GNU General Public License for more * details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * * Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com> * */#ifndef _PCIEHP_H#define _PCIEHP_H#include <linux/types.h>#include <linux/pci.h>#include <linux/pci_hotplug.h>#include <linux/delay.h>#include <linux/sched.h>		/* signal_pending() */#include <linux/pcieport_if.h>#include <linux/mutex.h>#define MY_NAME	"pciehp"extern int pciehp_poll_mode;extern int pciehp_poll_time;extern int pciehp_debug;extern int pciehp_force;extern struct workqueue_struct *pciehp_wq;#define dbg(format, arg...)						\	do {								\		if (pciehp_debug)					\			printk("%s: " format, MY_NAME , ## arg);	\	} while (0)#define err(format, arg...)						\	printk(KERN_ERR "%s: " format, MY_NAME , ## arg)#define info(format, arg...)						\	printk(KERN_INFO "%s: " format, MY_NAME , ## arg)#define warn(format, arg...)						\	printk(KERN_WARNING "%s: " format, MY_NAME , ## arg)#define SLOT_NAME_SIZE 10struct slot {	u8 bus;	u8 device;	u8 state;	u8 hp_slot;	u32 number;	struct controller *ctrl;	struct hpc_ops *hpc_ops;	struct hotplug_slot *hotplug_slot;	struct list_head	slot_list;	unsigned long last_emi_toggle;	struct delayed_work work;	/* work for button event */	struct mutex lock;};struct event_info {	u32 event_type;	struct slot *p_slot;	struct work_struct work;};struct controller {	struct mutex crit_sect;		/* critical section mutex */	struct mutex ctrl_lock;		/* controller lock */	int num_slots;			/* Number of slots on ctlr */	int slot_num_inc;		/* 1 or -1 */	struct pci_dev *pci_dev;	struct list_head slot_list;	struct hpc_ops *hpc_ops;	wait_queue_head_t queue;	/* sleep & wake process */	u8 slot_device_offset;	u32 first_slot;		/* First physical slot number */  /* PCIE only has 1 slot */	u8 slot_bus;		/* Bus where the slots handled by this controller sit */	u32 slot_cap;	u8 cap_base;	struct timer_list poll_timer;	int cmd_busy;	unsigned int no_cmd_complete:1;};#define INT_BUTTON_IGNORE		0#define INT_PRESENCE_ON			1#define INT_PRESENCE_OFF		2#define INT_SWITCH_CLOSE		3#define INT_SWITCH_OPEN			4#define INT_POWER_FAULT			5#define INT_POWER_FAULT_CLEAR		6#define INT_BUTTON_PRESS		7#define INT_BUTTON_RELEASE		8#define INT_BUTTON_CANCEL		9#define STATIC_STATE			0#define BLINKINGON_STATE		1#define BLINKINGOFF_STATE		2#define POWERON_STATE			3#define POWEROFF_STATE			4/* Error messages */#define INTERLOCK_OPEN			0x00000002#define ADD_NOT_SUPPORTED		0x00000003#define CARD_FUNCTIONING		0x00000005#define ADAPTER_NOT_SAME		0x00000006#define NO_ADAPTER_PRESENT		0x00000009#define NOT_ENOUGH_RESOURCES		0x0000000B#define DEVICE_TYPE_NOT_SUPPORTED	0x0000000C#define WRONG_BUS_FREQUENCY		0x0000000D#define POWER_FAILURE			0x0000000E/* Field definitions in Slot Capabilities Register */#define ATTN_BUTTN_PRSN	0x00000001#define	PWR_CTRL_PRSN	0x00000002#define MRL_SENS_PRSN	0x00000004#define ATTN_LED_PRSN	0x00000008#define PWR_LED_PRSN	0x00000010#define HP_SUPR_RM_SUP	0x00000020#define EMI_PRSN	0x00020000#define NO_CMD_CMPL_SUP	0x00040000#define ATTN_BUTTN(ctrl)	((ctrl)->slot_cap & ATTN_BUTTN_PRSN)#define POWER_CTRL(ctrl)	((ctrl)->slot_cap & PWR_CTRL_PRSN)#define MRL_SENS(ctrl)		((ctrl)->slot_cap & MRL_SENS_PRSN)#define ATTN_LED(ctrl)		((ctrl)->slot_cap & ATTN_LED_PRSN)#define PWR_LED(ctrl)		((ctrl)->slot_cap & PWR_LED_PRSN)#define HP_SUPR_RM(ctrl)	((ctrl)->slot_cap & HP_SUPR_RM_SUP)#define EMI(ctrl)		((ctrl)->slot_cap & EMI_PRSN)#define NO_CMD_CMPL(ctrl)	((ctrl)->slot_cap & NO_CMD_CMPL_SUP)extern int pciehp_sysfs_enable_slot(struct slot *slot);extern int pciehp_sysfs_disable_slot(struct slot *slot);extern u8 pciehp_handle_attention_button(struct slot *p_slot);  extern u8 pciehp_handle_switch_change(struct slot *p_slot);extern u8 pciehp_handle_presence_change(struct slot *p_slot);extern u8 pciehp_handle_power_fault(struct slot *p_slot);extern int pciehp_configure_device(struct slot *p_slot);extern int pciehp_unconfigure_device(struct slot *p_slot);extern void pciehp_queue_pushbutton_work(struct work_struct *work);struct controller *pcie_init(struct pcie_device *dev);int pciehp_enable_slot(struct slot *p_slot);int pciehp_disable_slot(struct slot *p_slot);int pcie_enable_notification(struct controller *ctrl);static inline const char *slot_name(struct slot *slot){	return hotplug_slot_name(slot->hotplug_slot);}static inline struct slot *pciehp_find_slot(struct controller *ctrl, u8 device){	struct slot *slot;	list_for_each_entry(slot, &ctrl->slot_list, slot_list) {		if (slot->device == device)			return slot;	}	err("%s: slot (device=0x%x) not found\n", __func__, device);	return NULL;}struct hpc_ops {	int (*power_on_slot)(struct slot *slot);	int (*power_off_slot)(struct slot *slot);	int (*get_power_status)(struct slot *slot, u8 *status);	int (*get_attention_status)(struct slot *slot, u8 *status);	int (*set_attention_status)(struct slot *slot, u8 status);	int (*get_latch_status)(struct slot *slot, u8 *status);	int (*get_adapter_status)(struct slot *slot, u8 *status);	int (*get_emi_status)(struct slot *slot, u8 *status);	int (*toggle_emi)(struct slot *slot);	int (*get_max_bus_speed)(struct slot *slot, enum pci_bus_speed *speed);	int (*get_cur_bus_speed)(struct slot *slot, enum pci_bus_speed *speed);	int (*get_max_lnk_width)(struct slot *slot, enum pcie_link_width *val);	int (*get_cur_lnk_width)(struct slot *slot, enum pcie_link_width *val);	int (*query_power_fault)(struct slot *slot);	void (*green_led_on)(struct slot *slot);	void (*green_led_off)(struct slot *slot);	void (*green_led_blink)(struct slot *slot);	void (*release_ctlr)(struct controller *ctrl);	int (*check_lnk_status)(struct controller *ctrl);};#ifdef CONFIG_ACPI#include <acpi/acpi.h>#include <acpi/acpi_bus.h>#include <acpi/actypes.h>#include <linux/pci-acpi.h>static inline int pciehp_get_hp_hw_control_from_firmware(struct pci_dev *dev){	u32 flags = (OSC_PCI_EXPRESS_NATIVE_HP_CONTROL |		     OSC_PCI_EXPRESS_CAP_STRUCTURE_CONTROL);	return acpi_get_hp_hw_control_from_firmware(dev, flags);}static inline int pciehp_get_hp_params_from_firmware(struct pci_dev *dev,			struct hotplug_params *hpp){	if (ACPI_FAILURE(acpi_get_hp_params_from_firmware(dev->bus, hpp)))		return -ENODEV;	return 0;}#else#define pciehp_get_hp_hw_control_from_firmware(dev) 	0#define pciehp_get_hp_params_from_firmware(dev, hpp)    (-ENODEV)#endif 				/* CONFIG_ACPI */#endif				/* _PCIEHP_H */