/* * 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/delay.h>#include <linux/pcieport_if.h>#include "pci_hotplug.h"#define MY_NAME	"pciehp"extern int pciehp_poll_mode;extern int pciehp_poll_time;extern int pciehp_debug;extern int pciehp_force;/*#define dbg(format, arg...) do { if (pciehp_debug) printk(KERN_DEBUG "%s: " format, MY_NAME , ## arg); } while (0)*/#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)struct hotplug_params {	u8 cache_line_size;	u8 latency_timer;	u8 enable_serr;	u8 enable_perr;};struct slot {	struct slot *next;	u8 bus;	u8 device;	u32 number;	u8 state;	struct timer_list task_event;	u8 hp_slot;	struct controller *ctrl;	struct hpc_ops *hpc_ops;	struct hotplug_slot *hotplug_slot;	struct list_head	slot_list;};struct event_info {	u32 event_type;	u8 hp_slot;};typedef u8(*php_intr_callback_t) (u8 hp_slot, void *instance_id);struct php_ctlr_state_s {	struct php_ctlr_state_s *pnext;	struct pci_dev *pci_dev;	unsigned int irq;	unsigned long flags;				/* spinlock's */	u32 slot_device_offset;	u32 num_slots;    	struct timer_list	int_poll_timer;		/* Added for poll event */	php_intr_callback_t 	attention_button_callback;	php_intr_callback_t 	switch_change_callback;	php_intr_callback_t 	presence_change_callback;	php_intr_callback_t 	power_fault_callback;	void 			*callback_instance_id;	struct ctrl_reg 	*creg;				/* Ptr to controller register space */};#define MAX_EVENTS		10struct controller {	struct controller *next;	struct semaphore crit_sect;	/* critical section semaphore */	struct php_ctlr_state_s *hpc_ctlr_handle; /* HPC controller handle */	int num_slots;			/* Number of slots on ctlr */	int slot_num_inc;		/* 1 or -1 */	struct pci_dev *pci_dev;	struct pci_bus *pci_bus;	struct event_info event_queue[MAX_EVENTS];	struct slot *slot;	struct hpc_ops *hpc_ops;	wait_queue_head_t queue;	/* sleep & wake process */	u8 next_event;	u8 bus;	u8 device;	u8 function;	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 */	u8 ctrlcap;	u16 vendor_id;	u8 cap_base;};#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#define PCI_TO_PCI_BRIDGE_CLASS		0x00060400/* 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#define REMOVE_NOT_SUPPORTED		0x00000003#define DISABLE_CARD			1/* 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 ATTN_BUTTN(cap)		(cap & ATTN_BUTTN_PRSN)#define POWER_CTRL(cap)		(cap & PWR_CTRL_PRSN)#define MRL_SENS(cap)		(cap & MRL_SENS_PRSN)#define ATTN_LED(cap)		(cap & ATTN_LED_PRSN)#define PWR_LED(cap)		(cap & PWR_LED_PRSN) #define HP_SUPR_RM(cap)		(cap & HP_SUPR_RM_SUP)/* * error Messages */#define msg_initialization_err	"Initialization failure, error=%d\n"#define msg_button_on		"PCI slot #%d - powering on due to button press.\n"#define msg_button_off		"PCI slot #%d - powering off due to button press.\n"#define msg_button_cancel	"PCI slot #%d - action canceled due to button press.\n"#define msg_button_ignore	"PCI slot #%d - button press ignored.  (action in progress...)\n"/* controller functions */extern int	pciehp_event_start_thread	(void);extern void	pciehp_event_stop_thread	(void);extern int	pciehp_enable_slot		(struct slot *slot);extern int	pciehp_disable_slot		(struct slot *slot);extern u8	pciehp_handle_attention_button	(u8 hp_slot, void *inst_id);extern u8	pciehp_handle_switch_change	(u8 hp_slot, void *inst_id);extern u8	pciehp_handle_presence_change	(u8 hp_slot, void *inst_id);extern u8	pciehp_handle_power_fault	(u8 hp_slot, void *inst_id);/* extern void	long_delay (int delay); *//* pci functions */extern int	pciehp_configure_device		(struct slot *p_slot);extern int	pciehp_unconfigure_device	(struct slot *p_slot);extern int	pciehp_get_hp_hw_control_from_firmware(struct pci_dev *dev);extern void	pciehp_get_hp_params_from_firmware(struct pci_dev *dev,	       	struct hotplug_params *hpp);/* Global variables */extern struct controller *pciehp_ctrl_list;/* Inline functions */static inline struct slot *pciehp_find_slot(struct controller *ctrl, u8 device){	struct slot *p_slot, *tmp_slot = NULL;	p_slot = ctrl->slot;	while (p_slot && (p_slot->device != device)) {		tmp_slot = p_slot;		p_slot = p_slot->next;	}	if (p_slot == NULL) {		err("ERROR: pciehp_find_slot device=0x%x\n", device);		p_slot = tmp_slot;	}	return p_slot;}static inline int wait_for_ctrl_irq(struct controller *ctrl){	int retval = 0;	DECLARE_WAITQUEUE(wait, current);	add_wait_queue(&ctrl->queue, &wait);	if (!pciehp_poll_mode)		/* Sleep for up to 1 second */		msleep_interruptible(1000);	else		msleep_interruptible(2500);		remove_wait_queue(&ctrl->queue, &wait);	if (signal_pending(current))		retval =  -EINTR;	return retval;}#define SLOT_NAME_SIZE 10static inline void make_slot_name(char *buffer, int buffer_size, struct slot *slot){	snprintf(buffer, buffer_size, "%04d_%04d", slot->bus, slot->number);}enum php_ctlr_type {	PCI,	ISA,	ACPI};int pcie_init(struct controller *ctrl, struct pcie_device *dev);/* This has no meaning for PCI Express, as there is only 1 slot per port */int pcie_get_ctlr_slot_config(struct controller *ctrl,		int *num_ctlr_slots,		int *first_device_num,		int *physical_slot_num,		u8 *ctrlcap);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_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 *value);	int	(*get_cur_lnk_width)	(struct slot *slot, enum pcie_link_width *value);		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);};#endif				/* _PCIEHP_H */