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linux-next/include/linux/pci_hotplug.h
Linus Torvalds cc998ff881 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 
Pull networking changes from David Miller:
 "Noteworthy changes this time around:

   1) Multicast rejoin support for team driver, from Jiri Pirko.

   2) Centralize and simplify TCP RTT measurement handling in order to
      reduce the impact of bad RTO seeding from SYN/ACKs.  Also, when
      both timestamps and local RTT measurements are available prefer
      the later because there are broken middleware devices which
      scramble the timestamp.

      From Yuchung Cheng.

   3) Add TCP_NOTSENT_LOWAT socket option to limit the amount of kernel
      memory consumed to queue up unsend user data.  From Eric Dumazet.

   4) Add a "physical port ID" abstraction for network devices, from
      Jiri Pirko.

   5) Add a "suppress" operation to influence fib_rules lookups, from
      Stefan Tomanek.

   6) Add a networking development FAQ, from Paul Gortmaker.

   7) Extend the information provided by tcp_probe and add ipv6 support,
      from Daniel Borkmann.

   8) Use RCU locking more extensively in openvswitch data paths, from
      Pravin B Shelar.

   9) Add SCTP support to openvswitch, from Joe Stringer.

  10) Add EF10 chip support to SFC driver, from Ben Hutchings.

  11) Add new SYNPROXY netfilter target, from Patrick McHardy.

  12) Compute a rate approximation for sending in TCP sockets, and use
      this to more intelligently coalesce TSO frames.  Furthermore, add
      a new packet scheduler which takes advantage of this estimate when
      available.  From Eric Dumazet.

  13) Allow AF_PACKET fanouts with random selection, from Daniel
      Borkmann.

  14) Add ipv6 support to vxlan driver, from Cong Wang"

Resolved conflicts as per discussion.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1218 commits)
  openvswitch: Fix alignment of struct sw_flow_key.
  netfilter: Fix build errors with xt_socket.c
  tcp: Add missing braces to do_tcp_setsockopt
  caif: Add missing braces to multiline if in cfctrl_linkup_request
  bnx2x: Add missing braces in bnx2x:bnx2x_link_initialize
  vxlan: Fix kernel panic on device delete.
  net: mvneta: implement ->ndo_do_ioctl() to support PHY ioctls
  net: mvneta: properly disable HW PHY polling and ensure adjust_link() works
  icplus: Use netif_running to determine device state
  ethernet/arc/arc_emac: Fix huge delays in large file copies
  tuntap: orphan frags before trying to set tx timestamp
  tuntap: purge socket error queue on detach
  qlcnic: use standard NAPI weights
  ipv6:introduce function to find route for redirect
  bnx2x: VF RSS support - VF side
  bnx2x: VF RSS support - PF side
  vxlan: Notify drivers for listening UDP port changes
  net: usbnet: update addr_assign_type if appropriate
  driver/net: enic: update enic maintainers and driver
  driver/net: enic: Exposing symbols for Cisco's low latency driver
  ...
2013-09-05 14:54:29 -07:00

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/*
* 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;
};
#define to_hotplug_slot(n) container_of(n, struct hotplug_slot, kobj)
static inline const char *hotplug_slot_name(const struct hotplug_slot *slot)
{
return pci_slot_name(slot->pci_slot);
}
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 <acpi/acpi.h>
#include <acpi/acpi_bus.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;
}
#endif
void pci_configure_slot(struct pci_dev *dev);
#endif
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