linux/drivers/pci/hotplug/rpadlpar_sysfs.c
Linus Torvalds 105cf3c8c6 pci-v4.16-changes
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Merge tag 'pci-v4.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:

 - skip AER driver error recovery callbacks for correctable errors
   reported via ACPI APEI, as we already do for errors reported via the
   native path (Tyler Baicar)

 - fix DPC shared interrupt handling (Alex Williamson)

 - print full DPC interrupt number (Keith Busch)

 - enable DPC only if AER is available (Keith Busch)

 - simplify DPC code (Bjorn Helgaas)

 - calculate ASPM L1 substate parameter instead of hardcoding it (Bjorn
   Helgaas)

 - enable Latency Tolerance Reporting for ASPM L1 substates (Bjorn
   Helgaas)

 - move ASPM internal interfaces out of public header (Bjorn Helgaas)

 - allow hot-removal of VGA devices (Mika Westerberg)

 - speed up unplug and shutdown by assuming Thunderbolt controllers
   don't support Command Completed events (Lukas Wunner)

 - add AtomicOps support for GPU and Infiniband drivers (Felix Kuehling,
   Jay Cornwall)

 - expose "ari_enabled" in sysfs to help NIC naming (Stuart Hayes)

 - clean up PCI DMA interface usage (Christoph Hellwig)

 - remove PCI pool API (replaced with DMA pool) (Romain Perier)

 - deprecate pci_get_bus_and_slot(), which assumed PCI domain 0 (Sinan
   Kaya)

 - move DT PCI code from drivers/of/ to drivers/pci/ (Rob Herring)

 - add PCI-specific wrappers for dev_info(), etc (Frederick Lawler)

 - remove warnings on sysfs mmap failure (Bjorn Helgaas)

 - quiet ROM validation messages (Alex Deucher)

 - remove redundant memory alloc failure messages (Markus Elfring)

 - fill in types for compile-time VGA and other I/O port resources
   (Bjorn Helgaas)

 - make "pci=pcie_scan_all" work for Root Ports as well as Downstream
   Ports to help AmigaOne X1000 (Bjorn Helgaas)

 - add SPDX tags to all PCI files (Bjorn Helgaas)

 - quirk Marvell 9128 DMA aliases (Alex Williamson)

 - quirk broken INTx disable on Ceton InfiniTV4 (Bjorn Helgaas)

 - fix CONFIG_PCI=n build by adding dummy pci_irqd_intx_xlate() (Niklas
   Cassel)

 - use DMA API to get MSI address for DesignWare IP (Niklas Cassel)

 - fix endpoint-mode DMA mask configuration (Kishon Vijay Abraham I)

 - fix ARTPEC-6 incorrect IS_ERR() usage (Wei Yongjun)

 - add support for ARTPEC-7 SoC (Niklas Cassel)

 - add endpoint-mode support for ARTPEC (Niklas Cassel)

 - add Cadence PCIe host and endpoint controller driver (Cyrille
   Pitchen)

 - handle multiple INTx status bits being set in dra7xx (Vignesh R)

 - translate dra7xx hwirq range to fix INTD handling (Vignesh R)

 - remove deprecated Exynos PHY initialization code (Jaehoon Chung)

 - fix MSI erratum workaround for HiSilicon Hip06/Hip07 (Dongdong Liu)

 - fix NULL pointer dereference in iProc BCMA driver (Ray Jui)

 - fix Keystone interrupt-controller-node lookup (Johan Hovold)

 - constify qcom driver structures (Julia Lawall)

 - rework Tegra config space mapping to increase space available for
   endpoints (Vidya Sagar)

 - simplify Tegra driver by using bus->sysdata (Manikanta Maddireddy)

 - remove PCI_REASSIGN_ALL_BUS usage on Tegra (Manikanta Maddireddy)

 - add support for Global Fabric Manager Server (GFMS) event to
   Microsemi Switchtec switch driver (Logan Gunthorpe)

 - add IDs for Switchtec PSX 24xG3 and PSX 48xG3 (Kelvin Cao)

* tag 'pci-v4.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (140 commits)
  PCI: cadence: Add EndPoint Controller driver for Cadence PCIe controller
  dt-bindings: PCI: cadence: Add DT bindings for Cadence PCIe endpoint controller
  PCI: endpoint: Fix EPF device name to support multi-function devices
  PCI: endpoint: Add the function number as argument to EPC ops
  PCI: cadence: Add host driver for Cadence PCIe controller
  dt-bindings: PCI: cadence: Add DT bindings for Cadence PCIe host controller
  PCI: Add vendor ID for Cadence
  PCI: Add generic function to probe PCI host controllers
  PCI: generic: fix missing call of pci_free_resource_list()
  PCI: OF: Add generic function to parse and allocate PCI resources
  PCI: Regroup all PCI related entries into drivers/pci/Makefile
  PCI/DPC: Reformat DPC register definitions
  PCI/DPC: Add and use DPC Status register field definitions
  PCI/DPC: Squash dpc_rp_pio_get_info() into dpc_process_rp_pio_error()
  PCI/DPC: Remove unnecessary RP PIO register structs
  PCI/DPC: Push dpc->rp_pio_status assignment into dpc_rp_pio_get_info()
  PCI/DPC: Squash dpc_rp_pio_print_error() into dpc_rp_pio_get_info()
  PCI/DPC: Make RP PIO log size check more generic
  PCI/DPC: Rename local "status" to "dpc_status"
  PCI/DPC: Squash dpc_rp_pio_print_tlp_header() into dpc_rp_pio_print_error()
  ...
2018-02-06 09:59:40 -08:00

126 lines
2.5 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Interface for Dynamic Logical Partitioning of I/O Slots on
* RPA-compliant PPC64 platform.
*
* John Rose <johnrose@austin.ibm.com>
* October 2003
*
* Copyright (C) 2003 IBM.
*/
#include <linux/kobject.h>
#include <linux/string.h>
#include <linux/pci.h>
#include <linux/pci_hotplug.h>
#include "rpaphp.h"
#include "rpadlpar.h"
#include "../pci.h"
#define DLPAR_KOBJ_NAME "control"
/* Those two have no quotes because they are passed to __ATTR() which
* stringifies the argument (yuck !)
*/
#define ADD_SLOT_ATTR_NAME add_slot
#define REMOVE_SLOT_ATTR_NAME remove_slot
static ssize_t add_slot_store(struct kobject *kobj, struct kobj_attribute *attr,
const char *buf, size_t nbytes)
{
char drc_name[MAX_DRC_NAME_LEN];
char *end;
int rc;
if (nbytes >= MAX_DRC_NAME_LEN)
return 0;
memcpy(drc_name, buf, nbytes);
end = strchr(drc_name, '\n');
if (!end)
end = &drc_name[nbytes];
*end = '\0';
rc = dlpar_add_slot(drc_name);
if (rc)
return rc;
return nbytes;
}
static ssize_t add_slot_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
return sprintf(buf, "0\n");
}
static ssize_t remove_slot_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t nbytes)
{
char drc_name[MAX_DRC_NAME_LEN];
int rc;
char *end;
if (nbytes >= MAX_DRC_NAME_LEN)
return 0;
memcpy(drc_name, buf, nbytes);
end = strchr(drc_name, '\n');
if (!end)
end = &drc_name[nbytes];
*end = '\0';
rc = dlpar_remove_slot(drc_name);
if (rc)
return rc;
return nbytes;
}
static ssize_t remove_slot_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
return sprintf(buf, "0\n");
}
static struct kobj_attribute add_slot_attr =
__ATTR(ADD_SLOT_ATTR_NAME, 0644, add_slot_show, add_slot_store);
static struct kobj_attribute remove_slot_attr =
__ATTR(REMOVE_SLOT_ATTR_NAME, 0644, remove_slot_show, remove_slot_store);
static struct attribute *default_attrs[] = {
&add_slot_attr.attr,
&remove_slot_attr.attr,
NULL,
};
static const struct attribute_group dlpar_attr_group = {
.attrs = default_attrs,
};
static struct kobject *dlpar_kobj;
int dlpar_sysfs_init(void)
{
int error;
dlpar_kobj = kobject_create_and_add(DLPAR_KOBJ_NAME,
&pci_slots_kset->kobj);
if (!dlpar_kobj)
return -EINVAL;
error = sysfs_create_group(dlpar_kobj, &dlpar_attr_group);
if (error)
kobject_put(dlpar_kobj);
return error;
}
void dlpar_sysfs_exit(void)
{
sysfs_remove_group(dlpar_kobj, &dlpar_attr_group);
kobject_put(dlpar_kobj);
}