From patchwork Mon Mar 16 07:01:21 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gavin Shan X-Patchwork-Id: 6015731 Return-Path: X-Original-To: patchwork-kvm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id C8ADBBF90F for ; Mon, 16 Mar 2015 07:02:57 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id E62AE20304 for ; Mon, 16 Mar 2015 07:02:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E0FA1202FE for ; Mon, 16 Mar 2015 07:02:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751338AbbCPHCv (ORCPT ); Mon, 16 Mar 2015 03:02:51 -0400 Received: from e23smtp01.au.ibm.com ([202.81.31.143]:44721 "EHLO e23smtp01.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750844AbbCPHCv (ORCPT ); Mon, 16 Mar 2015 03:02:51 -0400 Received: from /spool/local by e23smtp01.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Mon, 16 Mar 2015 17:02:47 +1000 Received: from d23relay08.au.ibm.com (d23relay08.au.ibm.com [9.185.71.33]) by d23dlp03.au.ibm.com (Postfix) with ESMTP id 2786B357804F for ; Mon, 16 Mar 2015 18:02:46 +1100 (EST) Received: from d23av02.au.ibm.com (d23av02.au.ibm.com [9.190.235.138]) by d23relay08.au.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id t2G72cpk30343296 for ; Mon, 16 Mar 2015 18:02:46 +1100 Received: from d23av02.au.ibm.com (localhost [127.0.0.1]) by d23av02.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id t2G72Cxo008701 for ; Mon, 16 Mar 2015 18:02:12 +1100 Received: from ozlabs.au.ibm.com (ozlabs.au.ibm.com [9.192.253.14]) by d23av02.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id t2G72CuO007944; Mon, 16 Mar 2015 18:02:12 +1100 Received: from bran.ozlabs.ibm.com (haven.au.ibm.com [9.192.253.15]) by ozlabs.au.ibm.com (Postfix) with ESMTP id D89D5A011C; Mon, 16 Mar 2015 18:01:48 +1100 (AEDT) Received: from shangw (shangw.ozlabs.ibm.com [10.61.2.199]) by bran.ozlabs.ibm.com (Postfix) with ESMTP id 7AE3316A9D0; Mon, 16 Mar 2015 18:01:48 +1100 (AEDT) Received: by shangw (Postfix, from userid 1000) id 16AB73E0479; Mon, 16 Mar 2015 18:01:48 +1100 (EST) From: Gavin Shan To: linuxppc-dev@ozlabs.org Cc: kvm@vger.kernel.org, alex.williamson@redhat.com, agraf@suse.de, aik@ozlabs.ru, david@gibson.dropbear.id.au, Gavin Shan Subject: [PATCH v2 1/2] powerpc/eeh: Introduce eeh_pe_inject_err() Date: Mon, 16 Mar 2015 18:01:21 +1100 Message-Id: <1426489282-16725-1-git-send-email-gwshan@linux.vnet.ibm.com> X-Mailer: git-send-email 1.8.3.2 X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 15031607-1618-0000-0000-000001BE984E Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The patch defines PCI error types and functions in 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 --- v2: Use EEH_ERR_FUNC_{MIN,MAX} to validate PCI error function --- arch/powerpc/include/asm/eeh.h | 26 ++++++++++++++++++++++++++ arch/powerpc/kernel/eeh.c | 40 ++++++++++++++++++++++++++++++++++++++++ 2 files changed, 66 insertions(+) diff --git a/arch/powerpc/include/asm/eeh.h b/arch/powerpc/include/asm/eeh.h index 55abfd0..44366fa 100644 --- a/arch/powerpc/include/asm/eeh.h +++ b/arch/powerpc/include/asm/eeh.h @@ -195,6 +195,30 @@ enum { #define EEH_RESET_FUNDAMENTAL 3 /* Fundamental reset */ #define EEH_LOG_TEMP 1 /* EEH temporary error log */ #define EEH_LOG_PERM 2 /* EEH permanent error log */ +#define EEH_ERR_TYPE_32 0 /* 32-bits PCI error */ +#define EEH_ERR_TYPE_64 1 /* 64-bits PCI error */ +#define EEH_ERR_FUNC_MIN 0 +#define EEH_ERR_FUNC_LD_MEM_ADDR 0 /* Memory load */ +#define EEH_ERR_FUNC_LD_MEM_DATA 1 +#define EEH_ERR_FUNC_LD_IO_ADDR 2 /* IO load */ +#define EEH_ERR_FUNC_LD_IO_DATA 3 +#define EEH_ERR_FUNC_LD_CFG_ADDR 4 /* Config load */ +#define EEH_ERR_FUNC_LD_CFG_DATA 5 +#define EEH_ERR_FUNC_ST_MEM_ADDR 6 /* Memory store */ +#define EEH_ERR_FUNC_ST_MEM_DATA 7 +#define EEH_ERR_FUNC_ST_IO_ADDR 8 /* IO store */ +#define EEH_ERR_FUNC_ST_IO_DATA 9 +#define EEH_ERR_FUNC_ST_CFG_ADDR 10 /* Config store */ +#define EEH_ERR_FUNC_ST_CFG_DATA 11 +#define EEH_ERR_FUNC_DMA_RD_ADDR 12 /* DMA read */ +#define EEH_ERR_FUNC_DMA_RD_DATA 13 +#define EEH_ERR_FUNC_DMA_RD_MASTER 14 +#define EEH_ERR_FUNC_DMA_RD_TARGET 15 +#define EEH_ERR_FUNC_DMA_WR_ADDR 16 /* DMA write */ +#define EEH_ERR_FUNC_DMA_WR_DATA 17 +#define EEH_ERR_FUNC_DMA_WR_MASTER 18 +#define EEH_ERR_FUNC_DMA_WR_TARGET 19 +#define EEH_ERR_FUNC_MAX 19 struct eeh_ops { char *name; @@ -295,6 +319,8 @@ int eeh_pe_set_option(struct eeh_pe *pe, int option); int eeh_pe_get_state(struct eeh_pe *pe); int eeh_pe_reset(struct eeh_pe *pe, int option); int eeh_pe_configure(struct eeh_pe *pe); +int eeh_pe_inject_err(struct eeh_pe *pe, int type, int func, + unsigned long addr, unsigned long mask); /** * EEH_POSSIBLE_ERROR() -- test for possible MMIO failure. diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c index 19a897c..55083e5 100644 --- a/arch/powerpc/kernel/eeh.c +++ b/arch/powerpc/kernel/eeh.c @@ -1651,6 +1651,46 @@ 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 */ + switch (type) { + case EEH_ERR_TYPE_32: + case EEH_ERR_TYPE_64: + break; + default: + 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()) {