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Commit bd3a1725 authored by Martin Schwidefsky's avatar Martin Schwidefsky
Browse files

s390/pci: add zpci_report_error interface 



The 'report_error' interface for PCI devices found on s390 can be
used by a user space program to inject an adapter error notification.
Add a new kernel interface zpci_report_error to allow a PCI device
driver to inject these error notifications without a detour over
user space.

Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 6c295885

arch/s390/include/asm/pci.h

+4 −0
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ 
#include <asm-generic/pci.h>

#include <asm/pci_clp.h>

#include <asm/pci_debug.h>

#include <asm/sclp.h>



#define PCIBIOS_MIN_IO		0x1000

#define PCIBIOS_MIN_MEM		0x10000000
@@ -216,6 +217,9 @@ void zpci_debug_init_device(struct zpci_dev *, const char *); 
void zpci_debug_exit_device(struct zpci_dev *);

void zpci_debug_info(struct zpci_dev *, struct seq_file *);



/* Error reporting */

int zpci_report_error(struct pci_dev *, struct zpci_report_error_header *);



#ifdef CONFIG_NUMA



/* Returns the node based on PCI bus */

arch/s390/pci/pci.c

+9 −0
Original line number Diff line number Diff line
@@ -854,6 +854,15 @@ void zpci_stop_device(struct zpci_dev *zdev) 
}

EXPORT_SYMBOL_GPL(zpci_stop_device);



int zpci_report_error(struct pci_dev *pdev,

		      struct zpci_report_error_header *report)

{

	struct zpci_dev *zdev = to_zpci(pdev);



	return sclp_pci_report(report, zdev->fh, zdev->fid);

}

EXPORT_SYMBOL(zpci_report_error);



static inline int barsize(u8 size)

{

	return (size) ? (1 << size) >> 10 : 0;