From ec33d36e5ab5d52d59a8f696f7efb682bfc58494 Mon Sep 17 00:00:00 2001 From: Gavin Shan Date: Thu, 26 Mar 2015 16:42:08 +1100 Subject: powerpc/eeh: Introduce eeh_pe_inject_err() The patch defines PCI error types and functions in uapi/asm/eeh.h and exports function eeh_pe_inject_err(), which will be called by VFIO driver to inject the specified PCI error to the indicated PE for testing purpose. Signed-off-by: Gavin Shan Reviewed-by: David Gibson Signed-off-by: Michael Ellerman --- arch/powerpc/kernel/eeh.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) (limited to 'arch/powerpc/kernel/eeh.c') diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c index 9ee61d15653d..04b5d94973dc 100644 --- a/arch/powerpc/kernel/eeh.c +++ b/arch/powerpc/kernel/eeh.c @@ -1647,6 +1647,41 @@ int eeh_pe_configure(struct eeh_pe *pe) } EXPORT_SYMBOL_GPL(eeh_pe_configure); +/** + * eeh_pe_inject_err - Injecting the specified PCI error to the indicated PE + * @pe: the indicated PE + * @type: error type + * @function: error function + * @addr: address + * @mask: address mask + * + * The routine is called to inject the specified PCI error, which + * is determined by @type and @function, to the indicated PE for + * testing purpose. + */ +int eeh_pe_inject_err(struct eeh_pe *pe, int type, int func, + unsigned long addr, unsigned long mask) +{ + /* Invalid PE ? */ + if (!pe) + return -ENODEV; + + /* Unsupported operation ? */ + if (!eeh_ops || !eeh_ops->err_inject) + return -ENOENT; + + /* Check on PCI error type */ + if (type != EEH_ERR_TYPE_32 && type != EEH_ERR_TYPE_64) + return -EINVAL; + + /* Check on PCI error function */ + if (func < EEH_ERR_FUNC_MIN || func > EEH_ERR_FUNC_MAX) + return -EINVAL; + + return eeh_ops->err_inject(pe, type, func, addr, mask); +} +EXPORT_SYMBOL_GPL(eeh_pe_inject_err); + static int proc_eeh_show(struct seq_file *m, void *v) { if (!eeh_enabled()) { -- cgit