Contributors: 22
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Benjamin Herrenschmidt |
87 |
23.26% |
5 |
12.50% |
| Paul Mackerras |
77 |
20.59% |
4 |
10.00% |
| John Rose |
58 |
15.51% |
2 |
5.00% |
| Tyrel Datwyler |
41 |
10.96% |
2 |
5.00% |
| Linas Vepstas |
25 |
6.68% |
3 |
7.50% |
| Linus Torvalds (pre-git) |
16 |
4.28% |
1 |
2.50% |
| Arnd Bergmann |
12 |
3.21% |
1 |
2.50% |
| Anton Blanchard |
11 |
2.94% |
3 |
7.50% |
| Cédric Le Goater |
10 |
2.67% |
1 |
2.50% |
| Gavin Shan |
8 |
2.14% |
2 |
5.00% |
| Daniel Axtens |
6 |
1.60% |
1 |
2.50% |
| Michael Ellerman |
6 |
1.60% |
3 |
7.50% |
| Olaf Hering |
3 |
0.80% |
1 |
2.50% |
| Paul Gortmaker |
3 |
0.80% |
1 |
2.50% |
| Oliver O'Halloran |
2 |
0.53% |
2 |
5.00% |
| Thomas Huth |
2 |
0.53% |
1 |
2.50% |
| Stephen Rothwell |
2 |
0.53% |
2 |
5.00% |
| Grant C. Likely |
1 |
0.27% |
1 |
2.50% |
| Harvey Harrison |
1 |
0.27% |
1 |
2.50% |
| Rob Herring |
1 |
0.27% |
1 |
2.50% |
| Mauricio Faria de Oliveira |
1 |
0.27% |
1 |
2.50% |
| Frans Pop |
1 |
0.27% |
1 |
2.50% |
| Total |
374 |
|
40 |
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* PCI Dynamic LPAR, PCI Hot Plug and PCI EEH recovery code
* for RPA-compliant PPC64 platform.
* Copyright (C) 2003 Linda Xie <lxie@us.ibm.com>
* Copyright (C) 2005 International Business Machines
*
* Updates, 2005, John Rose <johnrose@austin.ibm.com>
* Updates, 2005, Linas Vepstas <linas@austin.ibm.com>
*/
#include <linux/pci.h>
#include <linux/export.h>
#include <asm/pci-bridge.h>
#include <asm/ppc-pci.h>
#include <asm/firmware.h>
#include <asm/eeh.h>
#include "pseries.h"
struct pci_controller *init_phb_dynamic(struct device_node *dn)
{
struct pci_controller *phb;
pr_debug("PCI: Initializing new hotplug PHB %pOF\n", dn);
phb = pcibios_alloc_controller(dn);
if (!phb)
return NULL;
rtas_setup_phb(phb);
pci_process_bridge_OF_ranges(phb, dn, 0);
phb->controller_ops = pseries_pci_controller_ops;
pci_devs_phb_init_dynamic(phb);
pseries_msi_allocate_domains(phb);
/* Create EEH devices for the PHB */
eeh_phb_pe_create(phb);
if (dn->child)
pseries_eeh_init_edev_recursive(PCI_DN(dn));
pcibios_scan_phb(phb);
pcibios_finish_adding_to_bus(phb->bus);
return phb;
}
EXPORT_SYMBOL_GPL(init_phb_dynamic);
/* RPA-specific bits for removing PHBs */
int remove_phb_dynamic(struct pci_controller *phb)
{
struct pci_bus *b = phb->bus;
struct pci_host_bridge *host_bridge = to_pci_host_bridge(b->bridge);
struct resource *res;
int rc, i;
pr_debug("PCI: Removing PHB %04x:%02x...\n",
pci_domain_nr(b), b->number);
/* We cannot to remove a root bus that has children */
if (!(list_empty(&b->children) && list_empty(&b->devices)))
return -EBUSY;
/* We -know- there aren't any child devices anymore at this stage
* and thus, we can safely unmap the IO space as it's not in use
*/
res = &phb->io_resource;
if (res->flags & IORESOURCE_IO) {
rc = pcibios_unmap_io_space(b);
if (rc) {
printk(KERN_ERR "%s: failed to unmap IO on bus %s\n",
__func__, b->name);
return 1;
}
}
pseries_msi_free_domains(phb);
/* Keep a reference so phb isn't freed yet */
get_device(&host_bridge->dev);
/* Remove the PCI bus and unregister the bridge device from sysfs */
phb->bus = NULL;
pci_remove_bus(b);
host_bridge->bus = NULL;
device_unregister(&host_bridge->dev);
/* Now release the IO resource */
if (res->flags & IORESOURCE_IO)
release_resource(res);
/* Release memory resources */
for (i = 0; i < 3; ++i) {
res = &phb->mem_resources[i];
if (!(res->flags & IORESOURCE_MEM))
continue;
release_resource(res);
}
/*
* The pci_controller data structure is freed by
* the pcibios_free_controller_deferred() callback;
* see pseries_root_bridge_prepare().
*/
put_device(&host_bridge->dev);
return 0;
}
EXPORT_SYMBOL_GPL(remove_phb_dynamic);