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Commit 368704a6 authored by Sebastian Ott's avatar Sebastian Ott Committed by Martin Schwidefsky
Browse files

s390/pci: add report_error attribute 



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

Signed-off-by: default avatarSebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 12283a40

arch/s390/pci/pci_sysfs.c

+23 −0
Original line number Diff line number Diff line
@@ -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,

};