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Linux Kernel
3.7.1
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All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
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Linux Kernel
3.7.1
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#include <linux/kobject.h>#include <linux/slab.h>#include <linux/module.h>#include <linux/pci.h>#include <linux/err.h>#include "pci.h"Go to the source code of this file.
Functions | |
| EXPORT_SYMBOL_GPL (pci_slots_kset) | |
: user visible string presented in /sys/bus/pci/slots/<name> | |
pci_create_slot - create or increment refcount for physical PCI slot : struct pci_bus of parent bridge : PCI_SLOT(pci_dev->devfn) or -1 for placeholder : set if caller is hotplug driver, NULL otherwise PCI slots have first class attributes such as address, speed, width, and a &struct pci_slot is used to manage them. This interface will either return a new &struct pci_slot to the caller, or if the pci_slot already exists, its refcount will be incremented. Slots are uniquely identified by a , tuple. There are known platforms with broken firmware that assign the same name to multiple slots. Workaround these broken platforms by renaming the slots on behalf of the caller. If firmware assigns name N to multiple slots: The first slot is assigned N The second slot is assigned N-1 The third slot is assigned N-2 etc. Placeholder slots: In most cases, , will be sufficient to uniquely identify a slot. There is one notable exception - pSeries (rpaphp), where the cannot be determined until a device is actually inserted into the slot. In this scenario, the caller may pass -1 for . The following semantics are imposed when the caller passes == -1. First, we no longer check for an existing struct pci_slot, as there may be many slots with of -1. The other change in semantics is user-visible, which is the 'address' parameter presented in sysfs will consist solely of a dddd:bb tuple, where dddd is the PCI domain of the struct pci_bus and bb is the bus number. In other words, the devfn of the 'placeholder' slot will not be displayed. | |
| struct pci_slot * | pci_create_slot (struct pci_bus *parent, int slot_nr, const char *name, struct hotplug_slot *hotplug) |
| EXPORT_SYMBOL_GPL (pci_create_slot) | |
| void | pci_renumber_slot (struct pci_slot *slot, int slot_nr) |
| EXPORT_SYMBOL_GPL (pci_renumber_slot) | |
| void | pci_destroy_slot (struct pci_slot *slot) |
| EXPORT_SYMBOL_GPL (pci_destroy_slot) | |
| subsys_initcall (pci_slot_init) | |
Variables | |
| struct kset * | pci_slots_kset |
| EXPORT_SYMBOL_GPL | ( | pci_slots_kset | ) |
| EXPORT_SYMBOL_GPL | ( | pci_create_slot | ) |
| EXPORT_SYMBOL_GPL | ( | pci_renumber_slot | ) |
| EXPORT_SYMBOL_GPL | ( | pci_destroy_slot | ) |
pci_renumber_slot - update struct pci_slot -> number : &struct pci_slot to update : new number for slot
The primary purpose of this interface is to allow callers who earlier created a placeholder slot in pci_create_slot() by passing a -1 as slot_nr, to update their struct pci_slot with the correct .
| subsys_initcall | ( | pci_slot_init | ) |
1.8.2