cregit-Linux how code gets into the kernel

Release 4.7 include/linux/pci_hotplug.h

Directory: include/linux
/*
 * PCI HotPlug Core Functions
 *
 * Copyright (C) 1995,2001 Compaq Computer Corporation
 * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
 * Copyright (C) 2001 IBM Corp.
 *
 * 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 <kristen.c.accardi@intel.com>
 *
 */
#ifndef _PCI_HOTPLUG_H

#define _PCI_HOTPLUG_H

/**
 * struct hotplug_slot_ops -the callbacks that the hotplug pci core can use
 * @owner: The module owner of this structure
 * @mod_name: The module name (KBUILD_MODNAME) of this structure
 * @enable_slot: Called when the user wants to enable a specific pci slot
 * @disable_slot: Called when the user wants to disable a specific pci slot
 * @set_attention_status: Called to set the specific slot's attention LED to
 * the specified value
 * @hardware_test: Called to run a specified hardware test on the specified
 * slot.
 * @get_power_status: Called to get the current power status of a slot.
 *      If this field is NULL, the value passed in the struct hotplug_slot_info
 *      will be used when this value is requested by a user.
 * @get_attention_status: Called to get the current attention status of a slot.
 *      If this field is NULL, the value passed in the struct hotplug_slot_info
 *      will be used when this value is requested by a user.
 * @get_latch_status: Called to get the current latch status of a slot.
 *      If this field is NULL, the value passed in the struct hotplug_slot_info
 *      will be used when this value is requested by a user.
 * @get_adapter_status: Called to get see if an adapter is present in the slot or not.
 *      If this field is NULL, the value passed in the struct hotplug_slot_info
 *      will be used when this value is requested by a user.
 * @reset_slot: Optional interface to allow override of a bus reset for the
 *      slot for cases where a secondary bus reset can result in spurious
 *      hotplug events or where a slot can be reset independent of the bus.
 *
 * The table of function pointers that is passed to the hotplug pci core by a
 * hotplug pci driver.  These functions are called by the hotplug pci core when
 * the user wants to do something to a specific slot (query it for information,
 * set an LED, enable / disable power, etc.)
 */

struct hotplug_slot_ops {
	
struct module *owner;
	
const char *mod_name;
	
int (*enable_slot)		(struct hotplug_slot *slot);
	
int (*disable_slot)		(struct hotplug_slot *slot);
	
int (*set_attention_status)	(struct hotplug_slot *slot, u8 value);
	
int (*hardware_test)		(struct hotplug_slot *slot, u32 value);
	
int (*get_power_status)		(struct hotplug_slot *slot, u8 *value);
	
int (*get_attention_status)	(struct hotplug_slot *slot, u8 *value);
	
int (*get_latch_status)		(struct hotplug_slot *slot, u8 *value);
	
int (*get_adapter_status)	(struct hotplug_slot *slot, u8 *value);
	
int (*reset_slot)		(struct hotplug_slot *slot, int probe);
};

/**
 * struct hotplug_slot_info - used to notify the hotplug pci core of the state of the slot
 * @power_status: if power is enabled or not (1/0)
 * @attention_status: if the attention light is enabled or not (1/0)
 * @latch_status: if the latch (if any) is open or closed (1/0)
 * @adapter_status: if there is a pci board present in the slot or not (1/0)
 *
 * Used to notify the hotplug pci core of the status of a specific slot.
 */

struct hotplug_slot_info {
	
u8	power_status;
	
u8	attention_status;
	
u8	latch_status;
	
u8	adapter_status;
};

/**
 * struct hotplug_slot - used to register a physical slot with the hotplug pci core
 * @ops: pointer to the &struct hotplug_slot_ops to be used for this slot
 * @info: pointer to the &struct hotplug_slot_info for the initial values for
 * this slot.
 * @release: called during pci_hp_deregister to free memory allocated in a
 * hotplug_slot structure.
 * @private: used by the hotplug pci controller driver to store whatever it
 * needs.
 */

struct hotplug_slot {
	
struct hotplug_slot_ops		*ops;
	
struct hotplug_slot_info	*info;
	
void (*release) (struct hotplug_slot *slot);
	
void				*private;

	/* Variables below this are for use only by the hotplug pci core. */
	
struct list_head		slot_list;
	
struct pci_slot			*pci_slot;
};


static inline const char *hotplug_slot_name(const struct hotplug_slot *slot) { return pci_slot_name(slot->pci_slot); }

Contributors

PersonTokensPropCommitsCommitProp
alex chiangalex chiang23100.00%1100.00%
Total23100.00%1100.00%

int __pci_hp_register(struct hotplug_slot *slot, struct pci_bus *pbus, int nr, const char *name, struct module *owner, const char *mod_name); int pci_hp_deregister(struct hotplug_slot *slot); int __must_check pci_hp_change_slot_info(struct hotplug_slot *slot, struct hotplug_slot_info *info); /* use a define to avoid include chaining to get THIS_MODULE & friends */ #define pci_hp_register(slot, pbus, devnr, name) \ __pci_hp_register(slot, pbus, devnr, name, THIS_MODULE, KBUILD_MODNAME) /* PCI Setting Record (Type 0) */ struct hpp_type0 { u32 revision; u8 cache_line_size; u8 latency_timer; u8 enable_serr; u8 enable_perr; }; /* PCI-X Setting Record (Type 1) */ struct hpp_type1 { u32 revision; u8 max_mem_read; u8 avg_max_split; u16 tot_max_split; }; /* PCI Express Setting Record (Type 2) */ struct hpp_type2 { u32 revision; u32 unc_err_mask_and; u32 unc_err_mask_or; u32 unc_err_sever_and; u32 unc_err_sever_or; u32 cor_err_mask_and; u32 cor_err_mask_or; u32 adv_err_cap_and; u32 adv_err_cap_or; u16 pci_exp_devctl_and; u16 pci_exp_devctl_or; u16 pci_exp_lnkctl_and; u16 pci_exp_lnkctl_or; u32 sec_unc_err_sever_and; u32 sec_unc_err_sever_or; u32 sec_unc_err_mask_and; u32 sec_unc_err_mask_or; }; struct hotplug_params { struct hpp_type0 *t0; /* Type0: NULL if not available */ struct hpp_type1 *t1; /* Type1: NULL if not available */ struct hpp_type2 *t2; /* Type2: NULL if not available */ struct hpp_type0 type0_data; struct hpp_type1 type1_data; struct hpp_type2 type2_data; }; #ifdef CONFIG_ACPI #include <linux/acpi.h> int pci_get_hp_params(struct pci_dev *dev, struct hotplug_params *hpp); int acpi_get_hp_hw_control_from_firmware(struct pci_dev *dev, u32 flags); int acpi_pci_check_ejectable(struct pci_bus *pbus, acpi_handle handle); int acpi_pci_detect_ejectable(acpi_handle handle); #else
static inline int pci_get_hp_params(struct pci_dev *dev, struct hotplug_params *hpp) { return -ENODEV; }

Contributors

PersonTokensPropCommitsCommitProp
bjorn helgaasbjorn helgaas21100.00%1100.00%
Total21100.00%1100.00%

#endif #endif

Overall Contributors

PersonTokensPropCommitsCommitProp
linus torvaldslinus torvalds20639.69%14.35%
kenji kaneshigekenji kaneshige17132.95%417.39%
alex chiangalex chiang417.90%521.74%
kristen carlson accardikristen carlson accardi356.74%28.70%
bjorn helgaasbjorn helgaas285.39%417.39%
greg kroah-hartmangreg kroah-hartman163.08%313.04%
alex williamsonalex williamson152.89%14.35%
paul gortmakerpaul gortmaker50.96%14.35%
matthew wilcoxmatthew wilcox10.19%14.35%
lv zhenglv zheng10.19%14.35%
Total519100.00%23100.00%
Directory: include/linux
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