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s390/pci: add report_error attribute

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Provide an report_error attribute to send an adapter-error
notification associated with a PCI function.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Sebastian Ott 2015-11-27 11:22:57 +01:00 committed by Martin Schwidefsky
parent 12283a4035
commit 368704a65b
1 changed files with 23 additions and 0 deletions
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23
arch/s390/pci/pci_sysfs.c
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@ -12,6 +12,8 @@
#include <linux/stat.h>
#include <linux/pci.h>
#include <asm/sclp.h>
#define zpci_attr(name, fmt, member) \
static ssize_t name##_show(struct device *dev, \
struct device_attribute *attr, char *buf) \
@ -77,8 +79,29 @@ static ssize_t util_string_read(struct file *filp, struct kobject *kobj,
sizeof(zdev->util_str));
}
static BIN_ATTR_RO(util_string, CLP_UTIL_STR_LEN);
static ssize_t report_error_write(struct file *filp, struct kobject *kobj,
struct bin_attribute *attr, char *buf,
loff_t off, size_t count)
{
struct zpci_report_error_header *report = (void *) buf;
struct device *dev = kobj_to_dev(kobj);
struct pci_dev *pdev = to_pci_dev(dev);
struct zpci_dev *zdev = to_zpci(pdev);
int ret;
if (off || (count < sizeof(*report)))
return -EINVAL;
ret = sclp_pci_report(report, zdev->fh, zdev->fid);
return ret ? ret : count;
}
static BIN_ATTR(report_error, S_IWUSR, NULL, report_error_write, PAGE_SIZE);
static struct bin_attribute *zpci_bin_attrs[] = {
&bin_attr_util_string,
&bin_attr_report_error,
NULL,
};