Contributors: 12
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Dely Sy |
103 |
30.56% |
1 |
5.88% |
| Rajesh Shah |
72 |
21.36% |
3 |
17.65% |
| Yijing Wang |
43 |
12.76% |
1 |
5.88% |
| Rafael J. Wysocki |
31 |
9.20% |
1 |
5.88% |
| Taku Izumi |
29 |
8.61% |
2 |
11.76% |
| Kenji Kaneshige |
27 |
8.01% |
1 |
5.88% |
| Yinghai Lu |
21 |
6.23% |
2 |
11.76% |
| Björn Helgaas |
4 |
1.19% |
2 |
11.76% |
| Andy Shevchenko |
3 |
0.89% |
1 |
5.88% |
| Rolf Eike Beer |
2 |
0.59% |
1 |
5.88% |
| Ryan Desfosses |
1 |
0.30% |
1 |
5.88% |
| Harvey Harrison |
1 |
0.30% |
1 |
5.88% |
| Total |
337 |
|
17 |
|
// SPDX-License-Identifier: GPL-2.0+
/*
* Standard 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) 2003-2004 Intel Corporation
*
* All rights reserved.
*
* Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com>
*
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/pci.h>
#include "../pci.h"
#include "shpchp.h"
int shpchp_configure_device(struct slot *p_slot)
{
struct pci_dev *dev;
struct controller *ctrl = p_slot->ctrl;
struct pci_dev *bridge = ctrl->pci_dev;
struct pci_bus *parent = bridge->subordinate;
int num, ret = 0;
pci_lock_rescan_remove();
dev = pci_get_slot(parent, PCI_DEVFN(p_slot->device, 0));
if (dev) {
ctrl_err(ctrl, "Device %s already exists at %04x:%02x:%02x, cannot hot-add\n",
pci_name(dev), pci_domain_nr(parent),
p_slot->bus, p_slot->device);
pci_dev_put(dev);
ret = -EINVAL;
goto out;
}
num = pci_scan_slot(parent, PCI_DEVFN(p_slot->device, 0));
if (num == 0) {
ctrl_err(ctrl, "No new device found\n");
ret = -ENODEV;
goto out;
}
for_each_pci_bridge(dev, parent) {
if (PCI_SLOT(dev->devfn) == p_slot->device)
pci_hp_add_bridge(dev);
}
pci_assign_unassigned_bridge_resources(bridge);
pcie_bus_configure_settings(parent);
pci_bus_add_devices(parent);
out:
pci_unlock_rescan_remove();
return ret;
}
int shpchp_unconfigure_device(struct slot *p_slot)
{
int rc = 0;
struct pci_bus *parent = p_slot->ctrl->pci_dev->subordinate;
struct pci_dev *dev, *temp;
struct controller *ctrl = p_slot->ctrl;
ctrl_dbg(ctrl, "%s: domain:bus:dev = %04x:%02x:%02x\n",
__func__, pci_domain_nr(parent), p_slot->bus, p_slot->device);
pci_lock_rescan_remove();
list_for_each_entry_safe(dev, temp, &parent->devices, bus_list) {
if (PCI_SLOT(dev->devfn) != p_slot->device)
continue;
pci_dev_get(dev);
pci_stop_and_remove_bus_device(dev);
pci_dev_put(dev);
}
pci_unlock_rescan_remove();
return rc;
}