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PCI: add support for PCI domains to aer_inject

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Add support for PCI domains (segments) to aer_inject.

Acked-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Andrew Patterson <andrew.patterson@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Andrew Patterson 2009-10-12 13:14:05 -06:00 committed by Jesse Barnes
parent 3c299dc226
commit cc5d153a0c
1 changed files with 34 additions and 12 deletions
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46
drivers/pci/pcie/aer/aer_inject.c
View file

@ -23,6 +23,7 @@
#include <linux/pci.h>
#include <linux/fs.h>
#include <linux/uaccess.h>
#include <linux/stddef.h>
#include "aerdrv.h"
struct aer_error_inj {
@ -35,10 +36,12 @@ struct aer_error_inj {
u32 header_log1;
u32 header_log2;
u32 header_log3;
u16 domain;
};
struct aer_error {
struct list_head list;
u16 domain;
unsigned int bus;
unsigned int devfn;
int pos_cap_err;
@ -66,22 +69,27 @@ static LIST_HEAD(pci_bus_ops_list);
/* Protect einjected and pci_bus_ops_list */
static DEFINE_SPINLOCK(inject_lock);
static void aer_error_init(struct aer_error *err, unsigned int bus,
unsigned int devfn, int pos_cap_err)
static void aer_error_init(struct aer_error *err, u16 domain,
unsigned int bus, unsigned int devfn,
int pos_cap_err)
{
INIT_LIST_HEAD(&err->list);
err->domain = domain;
err->bus = bus;
err->devfn = devfn;
err->pos_cap_err = pos_cap_err;
}
/* inject_lock must be held before calling */
static struct aer_error *__find_aer_error(unsigned int bus, unsigned int devfn)
static struct aer_error *__find_aer_error(u16 domain, unsigned int bus,
unsigned int devfn)
{
struct aer_error *err;
list_for_each_entry(err, &einjected, list) {
if (bus == err->bus && devfn == err->devfn)
if (domain == err->domain &&
bus == err->bus &&
devfn == err->devfn)
return err;
}
return NULL;
@ -90,7 +98,10 @@ static struct aer_error *__find_aer_error(unsigned int bus, unsigned int devfn)
/* inject_lock must be held before calling */
static struct aer_error *__find_aer_error_by_dev(struct pci_dev *dev)
{
return __find_aer_error(dev->bus->number, dev->devfn);
int domain = pci_domain_nr(dev->bus);
if (domain < 0)
return NULL;
return __find_aer_error((u16)domain, dev->bus->number, dev->devfn);
}
/* inject_lock must be held before calling */
@ -172,11 +183,15 @@ static int pci_read_aer(struct pci_bus *bus, unsigned int devfn, int where,
struct aer_error *err;
unsigned long flags;
struct pci_ops *ops;
int domain;
spin_lock_irqsave(&inject_lock, flags);
if (size != sizeof(u32))
goto out;
err = __find_aer_error(bus->number, devfn);
domain = pci_domain_nr(bus);
if (domain < 0)
goto out;
err = __find_aer_error((u16)domain, bus->number, devfn);
if (!err)
goto out;
@ -200,11 +215,15 @@ int pci_write_aer(struct pci_bus *bus, unsigned int devfn, int where, int size,
unsigned long flags;
int rw1cs;
struct pci_ops *ops;
int domain;
spin_lock_irqsave(&inject_lock, flags);
if (size != sizeof(u32))
goto out;
err = __find_aer_error(bus->number, devfn);
domain = pci_domain_nr(bus);
if (domain < 0)
goto out;
err = __find_aer_error((u16)domain, bus->number, devfn);
if (!err)
goto out;
@ -305,7 +324,7 @@ static int aer_inject(struct aer_error_inj *einj)
u32 sever;
int ret = 0;
dev = pci_get_bus_and_slot(einj->bus, devfn);
dev = pci_get_domain_bus_and_slot((int)einj->domain, einj->bus, devfn);
if (!dev)
return -EINVAL;
rpdev = pcie_find_root_port(dev);
@ -344,7 +363,8 @@ static int aer_inject(struct aer_error_inj *einj)
if (!err) {
err = err_alloc;
err_alloc = NULL;
aer_error_init(err, einj->bus, devfn, pos_cap_err);
aer_error_init(err, einj->domain, einj->bus, devfn,
pos_cap_err);
list_add(&err->list, &einjected);
}
err->uncor_status |= einj->uncor_status;
@ -358,7 +378,8 @@ static int aer_inject(struct aer_error_inj *einj)
if (!rperr) {
rperr = rperr_alloc;
rperr_alloc = NULL;
aer_error_init(rperr, rpdev->bus->number, rpdev->devfn,
aer_error_init(rperr, pci_domain_nr(rpdev->bus),
rpdev->bus->number, rpdev->devfn,
rp_pos_cap_err);
list_add(&rperr->list, &einjected);
}
@ -411,10 +432,11 @@ static ssize_t aer_inject_write(struct file *filp, const char __user *ubuf,
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (usize != sizeof(struct aer_error_inj))
if (usize < offsetof(struct aer_error_inj, domain) ||
usize > sizeof(einj))
return -EINVAL;
memset(&einj, 0, sizeof(einj));
if (copy_from_user(&einj, ubuf, usize))
return -EFAULT;