From bd3a172557d6685f5fbd4b09713f74b84872e2b9 Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Mon, 18 Jul 2016 14:05:21 +0200 Subject: [PATCH] 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: Martin Schwidefsky --- arch/s390/include/asm/pci.h | 4 ++++ arch/s390/pci/pci.c | 9 +++++++++ 2 files changed, 13 insertions(+) diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h index 0da91c4d30fd..8769cbf9d7cf 100644 --- a/arch/s390/include/asm/pci.h +++ b/arch/s390/include/asm/pci.h @@ -11,6 +11,7 @@ #include #include #include +#include #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 */ diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c index 871af75c69c2..15ffc19c8c0c 100644 --- a/arch/s390/pci/pci.c +++ b/arch/s390/pci/pci.c @@ -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;