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android_kernel_xiaomi_sm8350/drivers/pci/hotplug/acpiphp.h
MUNEDA Takahiro 551bcb75b3 [PATCH] acpiphp: hotplug slot hotplug 
o hotplug slots add
  When the hot-added PCI device is p2p bridge, acpiphp calls
  find_p2p_bridge() to add hotplug slots.

o hotplug slots remove
  When the hot-removing PCI device is p2p bridge, acpiphp
  calls cleanup_p2p_bridge() to remove hotplug slots.

o notify handler exchange
  When the p2p bridge is added, acpiphp changes the notify
  hanlder.
  If no bridge device is inserted into the hotpluggable PCI
  slot, acpiphp installs the notify handler for function.
  After the p2p bridge hot-add, acpiphp has to install the
  notify handler for bridge. Because, the role of the
  handlers are not same. The hot-remove case is ditto.

Signed-off-by: MUNEDA Takahiro <muneda.takahiro@jp.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-19 14:13:22 -07:00

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/*
* ACPI PCI 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) 2002 Hiroshi Aono (h-aono@ap.jp.nec.com)
* Copyright (C) 2002,2003 Takayoshi Kochi (t-kochi@bq.jp.nec.com)
* Copyright (C) 2002,2003 NEC Corporation
* Copyright (C) 2003-2005 Matthew Wilcox (matthew.wilcox@hp.com)
* Copyright (C) 2003-2005 Hewlett Packard
*
* 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 <gregkh@us.ibm.com>,
* <t-kochi@bq.jp.nec.com>
*
*/
#ifndef _ACPIPHP_H
#define _ACPIPHP_H
#include <linux/acpi.h>
#include <linux/kobject.h> /* for KOBJ_NAME_LEN */
#include <linux/mutex.h>
#include "pci_hotplug.h"
#define dbg(format, arg...) \
do { \
if (acpiphp_debug) \
printk(KERN_DEBUG "%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)
/* name size which is used for entries in pcihpfs */
#define SLOT_NAME_SIZE KOBJ_NAME_LEN /* {_SUN} */
struct acpiphp_bridge;
struct acpiphp_slot;
/*
* struct slot - slot information for each *physical* slot
*/
struct slot {
struct hotplug_slot *hotplug_slot;
struct acpiphp_slot *acpi_slot;
};
/**
* struct acpiphp_bridge - PCI bridge information
*
* for each bridge device in ACPI namespace
*/
struct acpiphp_bridge {
struct list_head list;
acpi_handle handle;
struct acpiphp_slot *slots;
/* Ejectable PCI-to-PCI bridge (PCI bridge and PCI function) */
struct acpiphp_func *func;
int type;
int nr_slots;
u32 flags;
/* This bus (host bridge) or Secondary bus (PCI-to-PCI bridge) */
struct pci_bus *pci_bus;
/* PCI-to-PCI bridge device */
struct pci_dev *pci_dev;
/* ACPI 2.0 _HPP parameters */
struct hotplug_params hpp;
spinlock_t res_lock;
};
/**
* struct acpiphp_slot - PCI slot information
*
* PCI slot information for each *physical* PCI slot
*/
struct acpiphp_slot {
struct acpiphp_slot *next;
struct acpiphp_bridge *bridge; /* parent */
struct list_head funcs; /* one slot may have different
objects (i.e. for each function) */
struct slot *slot;
struct mutex crit_sect;
u8 device; /* pci device# */
u32 sun; /* ACPI _SUN (slot unique number) */
u32 slotno; /* slot number relative to bridge */
u32 flags; /* see below */
};
/**
* struct acpiphp_func - PCI function information
*
* PCI function information for each object in ACPI namespace
* typically 8 objects per slot (i.e. for each PCI function)
*/
struct acpiphp_func {
struct acpiphp_slot *slot; /* parent */
struct acpiphp_bridge *bridge; /* Ejectable PCI-to-PCI bridge */
struct list_head sibling;
struct pci_dev *pci_dev;
acpi_handle handle;
u8 function; /* pci function# */
u32 flags; /* see below */
};
/**
* struct acpiphp_attention_info - device specific attention registration
*
* ACPI has no generic method of setting/getting attention status
* this allows for device specific driver registration
*/
struct acpiphp_attention_info
{
int (*set_attn)(struct hotplug_slot *slot, u8 status);
int (*get_attn)(struct hotplug_slot *slot, u8 *status);
struct module *owner;
};
struct dependent_device {
struct list_head device_list;
struct list_head pci_list;
acpi_handle handle;
struct acpiphp_func *func;
};
struct acpiphp_dock_station {
acpi_handle handle;
u32 last_dock_time;
u32 flags;
struct acpiphp_func *dock_bridge;
struct list_head dependent_devices;
struct list_head pci_dependent_devices;
};
/* PCI bus bridge HID */
#define ACPI_PCI_HOST_HID "PNP0A03"
/* PCI BRIDGE type */
#define BRIDGE_TYPE_HOST 0
#define BRIDGE_TYPE_P2P 1
/* ACPI _STA method value (ignore bit 4; battery present) */
#define ACPI_STA_PRESENT (0x00000001)
#define ACPI_STA_ENABLED (0x00000002)
#define ACPI_STA_SHOW_IN_UI (0x00000004)
#define ACPI_STA_FUNCTIONING (0x00000008)
#define ACPI_STA_ALL (0x0000000f)
/* bridge flags */
#define BRIDGE_HAS_STA (0x00000001)
#define BRIDGE_HAS_EJ0 (0x00000002)
#define BRIDGE_HAS_HPP (0x00000004)
#define BRIDGE_HAS_PS0 (0x00000010)
#define BRIDGE_HAS_PS1 (0x00000020)
#define BRIDGE_HAS_PS2 (0x00000040)
#define BRIDGE_HAS_PS3 (0x00000080)
/* slot flags */
#define SLOT_POWEREDON (0x00000001)
#define SLOT_ENABLED (0x00000002)
#define SLOT_MULTIFUNCTION (0x00000004)
/* function flags */
#define FUNC_HAS_STA (0x00000001)
#define FUNC_HAS_EJ0 (0x00000002)
#define FUNC_HAS_PS0 (0x00000010)
#define FUNC_HAS_PS1 (0x00000020)
#define FUNC_HAS_PS2 (0x00000040)
#define FUNC_HAS_PS3 (0x00000080)
#define FUNC_HAS_DCK (0x00000100)
#define FUNC_IS_DD (0x00000200)
/* dock station flags */
#define DOCK_DOCKING (0x00000001)
#define DOCK_HAS_BRIDGE (0x00000002)
/* function prototypes */
/* acpiphp_core.c */
extern int acpiphp_register_attention(struct acpiphp_attention_info*info);
extern int acpiphp_unregister_attention(struct acpiphp_attention_info *info);
extern int acpiphp_register_hotplug_slot(struct acpiphp_slot *slot);
extern void acpiphp_unregister_hotplug_slot(struct acpiphp_slot *slot);
/* acpiphp_glue.c */
extern int acpiphp_glue_init (void);
extern void acpiphp_glue_exit (void);
extern int acpiphp_get_num_slots (void);
typedef int (*acpiphp_callback)(struct acpiphp_slot *slot, void *data);
void handle_hotplug_event_func(acpi_handle, u32, void*);
extern int acpiphp_enable_slot (struct acpiphp_slot *slot);
extern int acpiphp_disable_slot (struct acpiphp_slot *slot);
extern u8 acpiphp_get_power_status (struct acpiphp_slot *slot);
extern u8 acpiphp_get_attention_status (struct acpiphp_slot *slot);
extern u8 acpiphp_get_latch_status (struct acpiphp_slot *slot);
extern u8 acpiphp_get_adapter_status (struct acpiphp_slot *slot);
extern u32 acpiphp_get_address (struct acpiphp_slot *slot);
/* acpiphp_dock.c */
extern int find_dock_station(void);
extern void remove_dock_station(void);
extern void add_dependent_device(struct dependent_device *new_dd);
extern void add_pci_dependent_device(struct dependent_device *new_dd);
extern struct dependent_device *get_dependent_device(acpi_handle handle);
extern int is_dependent_device(acpi_handle handle);
extern int detect_dependent_devices(acpi_handle *bridge_handle);
extern struct dependent_device *alloc_dependent_device(acpi_handle handle);
/* variables */
extern int acpiphp_debug;
#endif /* _ACPIPHP_H */
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