From patchwork Thu Jun 27 04:44:41 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Wu, Hao" X-Patchwork-Id: 11018759 X-Patchwork-Delegate: moritz.fischer@ettus.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4F46C112C for ; Thu, 27 Jun 2019 05:02:48 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 40C1528A13 for ; Thu, 27 Jun 2019 05:02:48 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3533E28A1A; Thu, 27 Jun 2019 05:02:48 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E2B8428A13 for ; Thu, 27 Jun 2019 05:02:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727191AbfF0FBw (ORCPT ); Thu, 27 Jun 2019 01:01:52 -0400 Received: from mga11.intel.com ([192.55.52.93]:22916 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726563AbfF0FBw (ORCPT ); Thu, 27 Jun 2019 01:01:52 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 26 Jun 2019 22:01:51 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.63,422,1557212400"; d="scan'208";a="173005017" Received: from hao-dev.bj.intel.com ([10.238.157.65]) by orsmga002.jf.intel.com with ESMTP; 26 Jun 2019 22:01:49 -0700 From: Wu Hao To: mdf@kernel.org, linux-fpga@vger.kernel.org, linux-kernel@vger.kernel.org Cc: linux-api@vger.kernel.org, yilun.xu@intel.com, hao.wu@intel.com, gregkh@linuxfoundation.org, atull@kernel.org Subject: [PATCH v4 01/15] fpga: dfl-fme-mgr: fix FME_PR_INTFC_ID register address. Date: Thu, 27 Jun 2019 12:44:41 +0800 Message-Id: <1561610695-5414-2-git-send-email-hao.wu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1561610695-5414-1-git-send-email-hao.wu@intel.com> References: <1561610695-5414-1-git-send-email-hao.wu@intel.com> Sender: linux-fpga-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fpga@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP FME_PR_INTFC_ID is used as compat_id for fpga manager and region, but high 64 bits and low 64 bits of the compat_id are swapped by mistake. This patch fixes this problem by fixing register address. Signed-off-by: Wu Hao Acked-by: Alan Tull Acked-by: Moritz Fischer --- drivers/fpga/dfl-fme-mgr.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/fpga/dfl-fme-mgr.c b/drivers/fpga/dfl-fme-mgr.c index 76f3770..b3f7eee 100644 --- a/drivers/fpga/dfl-fme-mgr.c +++ b/drivers/fpga/dfl-fme-mgr.c @@ -30,8 +30,8 @@ #define FME_PR_STS 0x10 #define FME_PR_DATA 0x18 #define FME_PR_ERR 0x20 -#define FME_PR_INTFC_ID_H 0xA8 -#define FME_PR_INTFC_ID_L 0xB0 +#define FME_PR_INTFC_ID_L 0xA8 +#define FME_PR_INTFC_ID_H 0xB0 /* FME PR Control Register Bitfield */ #define FME_PR_CTRL_PR_RST BIT_ULL(0) /* Reset PR engine */ From patchwork Thu Jun 27 04:44:42 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Wu, Hao" X-Patchwork-Id: 11018733 X-Patchwork-Delegate: moritz.fischer@ettus.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 34000112C for ; Thu, 27 Jun 2019 05:01:59 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 21B2F287CF for ; Thu, 27 Jun 2019 05:01:59 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1360C28A16; Thu, 27 Jun 2019 05:01:59 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 37221287CF for ; Thu, 27 Jun 2019 05:01:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727232AbfF0FBy (ORCPT ); Thu, 27 Jun 2019 01:01:54 -0400 Received: from mga11.intel.com ([192.55.52.93]:22916 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726563AbfF0FBx (ORCPT ); Thu, 27 Jun 2019 01:01:53 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 26 Jun 2019 22:01:53 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.63,422,1557212400"; d="scan'208";a="173005022" Received: from hao-dev.bj.intel.com ([10.238.157.65]) by orsmga002.jf.intel.com with ESMTP; 26 Jun 2019 22:01:51 -0700 From: Wu Hao To: mdf@kernel.org, linux-fpga@vger.kernel.org, linux-kernel@vger.kernel.org Cc: linux-api@vger.kernel.org, yilun.xu@intel.com, hao.wu@intel.com, gregkh@linuxfoundation.org, atull@kernel.org Subject: [PATCH v4 02/15] fpga: dfl: fme: remove copy_to_user() in ioctl for PR Date: Thu, 27 Jun 2019 12:44:42 +0800 Message-Id: <1561610695-5414-3-git-send-email-hao.wu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1561610695-5414-1-git-send-email-hao.wu@intel.com> References: <1561610695-5414-1-git-send-email-hao.wu@intel.com> Sender: linux-fpga-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fpga@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch removes copy_to_user() code in partial reconfiguration ioctl, as it's useless as user never needs to read the data structure after ioctl. Signed-off-by: Xu Yilun Signed-off-by: Wu Hao Acked-by: Moritz Fischer Acked-by: Alan Tull --- v2: clean up code split from patch 2 in v1 patchset. v3: no change. v4: no change. --- drivers/fpga/dfl-fme-pr.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/fpga/dfl-fme-pr.c b/drivers/fpga/dfl-fme-pr.c index d9ca955..6ec0f09 100644 --- a/drivers/fpga/dfl-fme-pr.c +++ b/drivers/fpga/dfl-fme-pr.c @@ -159,9 +159,6 @@ static int fme_pr(struct platform_device *pdev, unsigned long arg) mutex_unlock(&pdata->lock); free_exit: vfree(buf); - if (copy_to_user((void __user *)arg, &port_pr, minsz)) - return -EFAULT; - return ret; } From patchwork Thu Jun 27 04:44:43 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Wu, Hao" X-Patchwork-Id: 11018757 X-Patchwork-Delegate: moritz.fischer@ettus.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BA31117D2 for ; Thu, 27 Jun 2019 05:02:47 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AB66E28A13 for ; Thu, 27 Jun 2019 05:02:47 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9FD1128A1A; Thu, 27 Jun 2019 05:02:47 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4769E28A13 for ; Thu, 27 Jun 2019 05:02:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727263AbfF0FB6 (ORCPT ); Thu, 27 Jun 2019 01:01:58 -0400 Received: from mga11.intel.com ([192.55.52.93]:22916 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726563AbfF0FBz (ORCPT ); Thu, 27 Jun 2019 01:01:55 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 26 Jun 2019 22:01:55 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.63,422,1557212400"; d="scan'208";a="173005029" Received: from hao-dev.bj.intel.com ([10.238.157.65]) by orsmga002.jf.intel.com with ESMTP; 26 Jun 2019 22:01:53 -0700 From: Wu Hao To: mdf@kernel.org, linux-fpga@vger.kernel.org, linux-kernel@vger.kernel.org Cc: linux-api@vger.kernel.org, yilun.xu@intel.com, hao.wu@intel.com, gregkh@linuxfoundation.org, atull@kernel.org Subject: [PATCH v4 03/15] fpga: dfl: fme: align PR buffer size per PR datawidth Date: Thu, 27 Jun 2019 12:44:43 +0800 Message-Id: <1561610695-5414-4-git-send-email-hao.wu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1561610695-5414-1-git-send-email-hao.wu@intel.com> References: <1561610695-5414-1-git-send-email-hao.wu@intel.com> Sender: linux-fpga-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fpga@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Current driver checks if input bitstream file size is aligned or not per PR data width (default 32bits). It requires one additional step for end user when they generate the bitstream file, padding extra zeros to bitstream file to align its size per PR data width, but they don't have to as hardware will drop extra padding bytes automatically. In order to simplify the user steps, this patch aligns PR buffer size per PR data width in driver, to allow user to pass unaligned size bitstream files to driver. Signed-off-by: Xu Yilun Signed-off-by: Wu Hao Acked-by: Alan Tull Acked-by: Moritz Fischer --- drivers/fpga/dfl-fme-pr.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/drivers/fpga/dfl-fme-pr.c b/drivers/fpga/dfl-fme-pr.c index 6ec0f09..3c71dc3 100644 --- a/drivers/fpga/dfl-fme-pr.c +++ b/drivers/fpga/dfl-fme-pr.c @@ -74,6 +74,7 @@ static int fme_pr(struct platform_device *pdev, unsigned long arg) struct dfl_fme *fme; unsigned long minsz; void *buf = NULL; + size_t length; int ret = 0; u64 v; @@ -85,9 +86,6 @@ static int fme_pr(struct platform_device *pdev, unsigned long arg) if (port_pr.argsz < minsz || port_pr.flags) return -EINVAL; - if (!IS_ALIGNED(port_pr.buffer_size, 4)) - return -EINVAL; - /* get fme header region */ fme_hdr = dfl_get_feature_ioaddr_by_id(&pdev->dev, FME_FEATURE_ID_HEADER); @@ -103,7 +101,13 @@ static int fme_pr(struct platform_device *pdev, unsigned long arg) port_pr.buffer_size)) return -EFAULT; - buf = vmalloc(port_pr.buffer_size); + /* + * align PR buffer per PR bandwidth, as HW ignores the extra padding + * data automatically. + */ + length = ALIGN(port_pr.buffer_size, 4); + + buf = vmalloc(length); if (!buf) return -ENOMEM; @@ -140,7 +144,7 @@ static int fme_pr(struct platform_device *pdev, unsigned long arg) fpga_image_info_free(region->info); info->buf = buf; - info->count = port_pr.buffer_size; + info->count = length; info->region_id = port_pr.port_id; region->info = info; From patchwork Thu Jun 27 04:44:44 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Wu, Hao" X-Patchwork-Id: 11018763 X-Patchwork-Delegate: moritz.fischer@ettus.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4C55917D2 for ; Thu, 27 Jun 2019 05:02:49 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3D540287CF for ; Thu, 27 Jun 2019 05:02:49 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 31B3E28A18; Thu, 27 Jun 2019 05:02:49 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CF838287CF for ; Thu, 27 Jun 2019 05:02:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727266AbfF0FB6 (ORCPT ); Thu, 27 Jun 2019 01:01:58 -0400 Received: from mga11.intel.com ([192.55.52.93]:22932 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727255AbfF0FB6 (ORCPT ); Thu, 27 Jun 2019 01:01:58 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 26 Jun 2019 22:01:57 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.63,422,1557212400"; d="scan'208";a="173005037" Received: from hao-dev.bj.intel.com ([10.238.157.65]) by orsmga002.jf.intel.com with ESMTP; 26 Jun 2019 22:01:55 -0700 From: Wu Hao To: mdf@kernel.org, linux-fpga@vger.kernel.org, linux-kernel@vger.kernel.org Cc: linux-api@vger.kernel.org, yilun.xu@intel.com, hao.wu@intel.com, gregkh@linuxfoundation.org, atull@kernel.org, Ananda Ravuri Subject: [PATCH v4 04/15] fpga: dfl: fme: support 512bit data width PR Date: Thu, 27 Jun 2019 12:44:44 +0800 Message-Id: <1561610695-5414-5-git-send-email-hao.wu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1561610695-5414-1-git-send-email-hao.wu@intel.com> References: <1561610695-5414-1-git-send-email-hao.wu@intel.com> Sender: linux-fpga-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fpga@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP In early partial reconfiguration private feature, it only supports 32bit data width when writing data to hardware for PR. 512bit data width PR support is an important optimization for some specific solutions (e.g. XEON with FPGA integrated), it allows driver to use AVX512 instruction to improve the performance of partial reconfiguration. e.g. programming one 100MB bitstream image via this 512bit data width PR hardware only takes ~300ms, but 32bit revision requires ~3s per test result. Please note now this optimization is only done on revision 2 of this PR private feature which is only used in integrated solution that AVX512 is always supported. This revision 2 hardware doesn't support 32bit PR. Signed-off-by: Ananda Ravuri Signed-off-by: Xu Yilun Signed-off-by: Wu Hao Acked-by: Alan Tull --- v2: check AVX512 support using cpu_feature_enabled() fix other comments from Scott Wood v3: no change. v4: no change. --- drivers/fpga/dfl-fme-main.c | 3 ++ drivers/fpga/dfl-fme-mgr.c | 113 +++++++++++++++++++++++++++++++++++++------- drivers/fpga/dfl-fme-pr.c | 43 +++++++++++------ drivers/fpga/dfl-fme.h | 2 + drivers/fpga/dfl.h | 5 ++ 5 files changed, 135 insertions(+), 31 deletions(-) diff --git a/drivers/fpga/dfl-fme-main.c b/drivers/fpga/dfl-fme-main.c index 086ad24..076d74f 100644 --- a/drivers/fpga/dfl-fme-main.c +++ b/drivers/fpga/dfl-fme-main.c @@ -21,6 +21,8 @@ #include "dfl.h" #include "dfl-fme.h" +#define DRV_VERSION "0.8" + static ssize_t ports_num_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -277,3 +279,4 @@ static int fme_remove(struct platform_device *pdev) MODULE_AUTHOR("Intel Corporation"); MODULE_LICENSE("GPL v2"); MODULE_ALIAS("platform:dfl-fme"); +MODULE_VERSION(DRV_VERSION); diff --git a/drivers/fpga/dfl-fme-mgr.c b/drivers/fpga/dfl-fme-mgr.c index b3f7eee..d1a4ba5 100644 --- a/drivers/fpga/dfl-fme-mgr.c +++ b/drivers/fpga/dfl-fme-mgr.c @@ -22,14 +22,18 @@ #include #include +#include "dfl.h" #include "dfl-fme-pr.h" +#define DRV_VERSION "0.8" + /* FME Partial Reconfiguration Sub Feature Register Set */ #define FME_PR_DFH 0x0 #define FME_PR_CTRL 0x8 #define FME_PR_STS 0x10 #define FME_PR_DATA 0x18 #define FME_PR_ERR 0x20 +#define FME_PR_512_DATA 0x40 /* Data Register for 512bit datawidth PR */ #define FME_PR_INTFC_ID_L 0xA8 #define FME_PR_INTFC_ID_H 0xB0 @@ -67,8 +71,43 @@ #define PR_WAIT_TIMEOUT 8000000 #define PR_HOST_STATUS_IDLE 0 +#if defined(CONFIG_X86) && defined(CONFIG_AS_AVX512) + +#include +#include + +static inline int is_cpu_avx512_enabled(void) +{ + return cpu_feature_enabled(X86_FEATURE_AVX512F); +} + +static inline void copy512(const void *src, void __iomem *dst) +{ + kernel_fpu_begin(); + + asm volatile("vmovdqu64 (%0), %%zmm0;" + "vmovntdq %%zmm0, (%1);" + : + : "r"(src), "r"(dst) + : "memory"); + + kernel_fpu_end(); +} +#else +static inline int is_cpu_avx512_enabled(void) +{ + return 0; +} + +static inline void copy512(const void *src, void __iomem *dst) +{ + WARN_ON_ONCE(1); +} +#endif + struct fme_mgr_priv { void __iomem *ioaddr; + unsigned int pr_datawidth; u64 pr_error; }; @@ -169,7 +208,7 @@ static int fme_mgr_write(struct fpga_manager *mgr, struct fme_mgr_priv *priv = mgr->priv; void __iomem *fme_pr = priv->ioaddr; u64 pr_ctrl, pr_status, pr_data; - int delay = 0, pr_credit, i = 0; + int ret = 0, delay = 0, pr_credit; dev_dbg(dev, "start request\n"); @@ -181,9 +220,9 @@ static int fme_mgr_write(struct fpga_manager *mgr, /* * driver can push data to PR hardware using PR_DATA register once HW - * has enough pr_credit (> 1), pr_credit reduces one for every 32bit - * pr data write to PR_DATA register. If pr_credit <= 1, driver needs - * to wait for enough pr_credit from hardware by polling. + * has enough pr_credit (> 1), pr_credit reduces one for every pr data + * width write to PR_DATA register. If pr_credit <= 1, driver needs to + * wait for enough pr_credit from hardware by polling. */ pr_status = readq(fme_pr + FME_PR_STS); pr_credit = FIELD_GET(FME_PR_STS_PR_CREDIT, pr_status); @@ -192,7 +231,8 @@ static int fme_mgr_write(struct fpga_manager *mgr, while (pr_credit <= 1) { if (delay++ > PR_WAIT_TIMEOUT) { dev_err(dev, "PR_CREDIT timeout\n"); - return -ETIMEDOUT; + ret = -ETIMEDOUT; + goto done; } udelay(1); @@ -200,21 +240,27 @@ static int fme_mgr_write(struct fpga_manager *mgr, pr_credit = FIELD_GET(FME_PR_STS_PR_CREDIT, pr_status); } - if (count < 4) { - dev_err(dev, "Invalid PR bitstream size\n"); - return -EINVAL; + WARN_ON(count < priv->pr_datawidth); + + switch (priv->pr_datawidth) { + case 4: + pr_data = FIELD_PREP(FME_PR_DATA_PR_DATA_RAW, + *(u32 *)buf); + writeq(pr_data, fme_pr + FME_PR_DATA); + break; + case 64: + copy512(buf, fme_pr + FME_PR_512_DATA); + break; + default: + WARN_ON_ONCE(1); } - - pr_data = 0; - pr_data |= FIELD_PREP(FME_PR_DATA_PR_DATA_RAW, - *(((u32 *)buf) + i)); - writeq(pr_data, fme_pr + FME_PR_DATA); - count -= 4; + buf += priv->pr_datawidth; + count -= priv->pr_datawidth; pr_credit--; - i++; } - return 0; +done: + return ret; } static int fme_mgr_write_complete(struct fpga_manager *mgr, @@ -279,6 +325,36 @@ static void fme_mgr_get_compat_id(void __iomem *fme_pr, id->id_h = readq(fme_pr + FME_PR_INTFC_ID_H); } +static u8 fme_mgr_get_pr_datawidth(struct device *dev, void __iomem *fme_pr) +{ + u8 revision = dfl_feature_revision(fme_pr); + + if (revision < 2) { + /* + * revision 0 and 1 only support 32bit data width partial + * reconfiguration, so pr_datawidth is 4 (Byte). + */ + return 4; + } else if (revision == 2) { + /* + * revision 2 hardware has optimization to support 512bit data + * width partial reconfiguration with AVX512 instructions. So + * pr_datawidth is 64 (Byte). As revision 2 hardware is only + * used in integrated solution, CPU supports AVX512 instructions + * for sure, but it still needs to check here as AVX512 could be + * disabled in kernel (e.g. using clearcpuid boot option). + */ + if (is_cpu_avx512_enabled()) + return 64; + + dev_err(dev, "revision 2: AVX512 is disabled\n"); + return 0; + } + + dev_err(dev, "revision %d is not supported yet\n", revision); + return 0; +} + static int fme_mgr_probe(struct platform_device *pdev) { struct dfl_fme_mgr_pdata *pdata = dev_get_platdata(&pdev->dev); @@ -302,6 +378,10 @@ static int fme_mgr_probe(struct platform_device *pdev) return PTR_ERR(priv->ioaddr); } + priv->pr_datawidth = fme_mgr_get_pr_datawidth(dev, priv->ioaddr); + if (!priv->pr_datawidth) + return -ENODEV; + compat_id = devm_kzalloc(dev, sizeof(*compat_id), GFP_KERNEL); if (!compat_id) return -ENOMEM; @@ -342,3 +422,4 @@ static int fme_mgr_remove(struct platform_device *pdev) MODULE_AUTHOR("Intel Corporation"); MODULE_LICENSE("GPL v2"); MODULE_ALIAS("platform:dfl-fme-mgr"); +MODULE_VERSION(DRV_VERSION); diff --git a/drivers/fpga/dfl-fme-pr.c b/drivers/fpga/dfl-fme-pr.c index 3c71dc3..cd94ba8 100644 --- a/drivers/fpga/dfl-fme-pr.c +++ b/drivers/fpga/dfl-fme-pr.c @@ -83,7 +83,7 @@ static int fme_pr(struct platform_device *pdev, unsigned long arg) if (copy_from_user(&port_pr, argp, minsz)) return -EFAULT; - if (port_pr.argsz < minsz || port_pr.flags) + if (port_pr.argsz < minsz || port_pr.flags || !port_pr.buffer_size) return -EINVAL; /* get fme header region */ @@ -101,15 +101,25 @@ static int fme_pr(struct platform_device *pdev, unsigned long arg) port_pr.buffer_size)) return -EFAULT; + mutex_lock(&pdata->lock); + fme = dfl_fpga_pdata_get_private(pdata); + /* fme device has been unregistered. */ + if (!fme) { + ret = -EINVAL; + goto unlock_exit; + } + /* * align PR buffer per PR bandwidth, as HW ignores the extra padding * data automatically. */ - length = ALIGN(port_pr.buffer_size, 4); + length = ALIGN(port_pr.buffer_size, fme->pr_datawidth); buf = vmalloc(length); - if (!buf) - return -ENOMEM; + if (!buf) { + ret = -ENOMEM; + goto unlock_exit; + } if (copy_from_user(buf, (void __user *)(unsigned long)port_pr.buffer_address, @@ -127,18 +137,10 @@ static int fme_pr(struct platform_device *pdev, unsigned long arg) info->flags |= FPGA_MGR_PARTIAL_RECONFIG; - mutex_lock(&pdata->lock); - fme = dfl_fpga_pdata_get_private(pdata); - /* fme device has been unregistered. */ - if (!fme) { - ret = -EINVAL; - goto unlock_exit; - } - region = dfl_fme_region_find(fme, port_pr.port_id); if (!region) { ret = -EINVAL; - goto unlock_exit; + goto free_exit; } fpga_image_info_free(region->info); @@ -159,10 +161,10 @@ static int fme_pr(struct platform_device *pdev, unsigned long arg) fpga_bridges_put(®ion->bridge_list); put_device(®ion->dev); -unlock_exit: - mutex_unlock(&pdata->lock); free_exit: vfree(buf); +unlock_exit: + mutex_unlock(&pdata->lock); return ret; } @@ -388,6 +390,17 @@ static int pr_mgmt_init(struct platform_device *pdev, mutex_lock(&pdata->lock); priv = dfl_fpga_pdata_get_private(pdata); + /* + * Initialize PR data width. + * Only revision 2 supports 512bit datawidth for better performance, + * other revisions use default 32bit datawidth. This is used for + * buffer alignment. + */ + if (dfl_feature_revision(feature->ioaddr) == 2) + priv->pr_datawidth = 64; + else + priv->pr_datawidth = 4; + /* Initialize the region and bridge sub device list */ INIT_LIST_HEAD(&priv->region_list); INIT_LIST_HEAD(&priv->bridge_list); diff --git a/drivers/fpga/dfl-fme.h b/drivers/fpga/dfl-fme.h index 5394a21..de20755 100644 --- a/drivers/fpga/dfl-fme.h +++ b/drivers/fpga/dfl-fme.h @@ -21,12 +21,14 @@ /** * struct dfl_fme - dfl fme private data * + * @pr_datawidth: data width for partial reconfiguration. * @mgr: FME's FPGA manager platform device. * @region_list: linked list of FME's FPGA regions. * @bridge_list: linked list of FME's FPGA bridges. * @pdata: fme platform device's pdata. */ struct dfl_fme { + int pr_datawidth; struct platform_device *mgr; struct list_head region_list; struct list_head bridge_list; diff --git a/drivers/fpga/dfl.h b/drivers/fpga/dfl.h index a8b869e..8851c6c 100644 --- a/drivers/fpga/dfl.h +++ b/drivers/fpga/dfl.h @@ -331,6 +331,11 @@ static inline bool dfl_feature_is_port(void __iomem *base) (FIELD_GET(DFH_ID, v) == DFH_ID_FIU_PORT); } +static inline u8 dfl_feature_revision(void __iomem *base) +{ + return (u8)FIELD_GET(DFH_REVISION, readq(base + DFH)); +} + /** * struct dfl_fpga_enum_info - DFL FPGA enumeration information * From patchwork Thu Jun 27 04:44:45 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Wu, Hao" X-Patchwork-Id: 11018755 X-Patchwork-Delegate: moritz.fischer@ettus.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id AF645112C for ; Thu, 27 Jun 2019 05:02:46 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9F7A4287CF for ; Thu, 27 Jun 2019 05:02:46 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 939AF28A18; Thu, 27 Jun 2019 05:02:46 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0BDF0287CF for ; Thu, 27 Jun 2019 05:02:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727394AbfF0FCm (ORCPT ); Thu, 27 Jun 2019 01:02:42 -0400 Received: from mga11.intel.com ([192.55.52.93]:22936 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727283AbfF0FCA (ORCPT ); Thu, 27 Jun 2019 01:02:00 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 26 Jun 2019 22:01:59 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.63,422,1557212400"; d="scan'208";a="173005042" Received: from hao-dev.bj.intel.com ([10.238.157.65]) by orsmga002.jf.intel.com with ESMTP; 26 Jun 2019 22:01:57 -0700 From: Wu Hao To: mdf@kernel.org, linux-fpga@vger.kernel.org, linux-kernel@vger.kernel.org Cc: linux-api@vger.kernel.org, yilun.xu@intel.com, hao.wu@intel.com, gregkh@linuxfoundation.org, atull@kernel.org Subject: [PATCH v4 05/15] Documentation: fpga: dfl: add descriptions for virtualization and new interfaces. Date: Thu, 27 Jun 2019 12:44:45 +0800 Message-Id: <1561610695-5414-6-git-send-email-hao.wu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1561610695-5414-1-git-send-email-hao.wu@intel.com> References: <1561610695-5414-1-git-send-email-hao.wu@intel.com> Sender: linux-fpga-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fpga@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds virtualization support description for DFL based FPGA devices (based on PCIe SRIOV), and introductions to new interfaces added by new dfl private feature drivers. Signed-off-by: Xu Yilun Signed-off-by: Wu Hao Acked-by: Alan Tull --- Documentation/fpga/dfl.txt | 101 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 101 insertions(+) diff --git a/Documentation/fpga/dfl.txt b/Documentation/fpga/dfl.txt index 6df4621..a22631f 100644 --- a/Documentation/fpga/dfl.txt +++ b/Documentation/fpga/dfl.txt @@ -84,6 +84,8 @@ The following functions are exposed through ioctls: Get driver API version (DFL_FPGA_GET_API_VERSION) Check for extensions (DFL_FPGA_CHECK_EXTENSION) Program bitstream (DFL_FPGA_FME_PORT_PR) + Assign port to PF (DFL_FPGA_FME_PORT_ASSIGN) + Release port from PF (DFL_FPGA_FME_PORT_RELEASE) More functions are exposed through sysfs (/sys/class/fpga_region/regionX/dfl-fme.n/): @@ -99,6 +101,10 @@ More functions are exposed through sysfs one FPGA device may have more than one port, this sysfs interface indicates how many ports the FPGA device has. + Global error reporting management (errors/) + error reporting sysfs interfaces allow user to read errors detected by the + hardware, and clear the logged errors. + FIU - PORT ========== @@ -139,6 +145,10 @@ More functions are exposed through sysfs: Read Accelerator GUID (afu_id) afu_id indicates which PR bitstream is programmed to this AFU. + Error reporting (errors/) + error reporting sysfs interfaces allow user to read port/afu errors + detected by the hardware, and clear the logged errors. + DFL Framework Overview ====================== @@ -212,6 +222,97 @@ the compat_id exposed by the target FPGA region. This check is usually done by userspace before calling the reconfiguration IOCTL. +FPGA virtualization - PCIe SRIOV +================================ +This section describes the virtualization support on DFL based FPGA device to +enable accessing an accelerator from applications running in a virtual machine +(VM). This section only describes the PCIe based FPGA device with SRIOV support. + +Features supported by the particular FPGA device are exposed through Device +Feature Lists, as illustrated below: + + +-------------------------------+ +-------------+ + | PF | | VF | + +-------------------------------+ +-------------+ + ^ ^ ^ ^ + | | | | ++-----|------------|---------|--------------|-------+ +| | | | | | +| +-----+ +-------+ +-------+ +-------+ | +| | FME | | Port0 | | Port1 | | Port2 | | +| +-----+ +-------+ +-------+ +-------+ | +| ^ ^ ^ | +| | | | | +| +-------+ +------+ +-------+ | +| | AFU | | AFU | | AFU | | +| +-------+ +------+ +-------+ | +| | +| DFL based FPGA PCIe Device | ++---------------------------------------------------+ + +FME is always accessed through the physical function (PF). + +Ports (and related AFUs) are accessed via PF by default, but could be exposed +through virtual function (VF) devices via PCIe SRIOV. Each VF only contains +1 Port and 1 AFU for isolation. Users could assign individual VFs (accelerators) +created via PCIe SRIOV interface, to virtual machines. + +The driver organization in virtualization case is illustrated below: + + +-------++------++------+ | + | FME || FME || FME | | + | FPGA || FPGA || FPGA | | + |Manager||Bridge||Region| | + +-------++------++------+ | + +-----------------------+ +--------+ | +--------+ + | FME | | AFU | | | AFU | + | Module | | Module | | | Module | + +-----------------------+ +--------+ | +--------+ + +-----------------------+ | +-----------------------+ + | FPGA Container Device | | | FPGA Container Device | + | (FPGA Base Region) | | | (FPGA Base Region) | + +-----------------------+ | +-----------------------+ + +------------------+ | +------------------+ + | FPGA PCIE Module | | Virtual | FPGA PCIE Module | + +------------------+ Host | Machine +------------------+ + -------------------------------------- | ------------------------------ + +---------------+ | +---------------+ + | PCI PF Device | | | PCI VF Device | + +---------------+ | +---------------+ + +FPGA PCIe device driver is always loaded first once a FPGA PCIe PF or VF device +is detected. It: + + a) finish enumeration on both FPGA PCIe PF and VF device using common + interfaces from DFL framework. + b) supports SRIOV. + +The FME device driver plays a management role in this driver architecture, it +provides ioctls to release Port from PF and assign Port to PF. After release +a port from PF, then it's safe to expose this port through a VF via PCIe SRIOV +sysfs interface. + +To enable accessing an accelerator from applications running in a VM, the +respective AFU's port needs to be assigned to a VF using the following steps: + + a) The PF owns all AFU ports by default. Any port that needs to be + reassigned to a VF must first be released through the + DFL_FPGA_FME_PORT_RELEASE ioctl on the FME device. + + b) Once N ports are released from PF, then user can use command below + to enable SRIOV and VFs. Each VF owns only one Port with AFU. + + echo N > $PCI_DEVICE_PATH/sriov_numvfs + + c) Pass through the VFs to VMs + + d) The AFU under VF is accessible from applications in VM (using the + same driver inside the VF). + +Note that an FME can't be assigned to a VF, thus PR and other management +functions are only available via the PF. + + Device enumeration ================== This section introduces how applications enumerate the fpga device from From patchwork Thu Jun 27 04:44:46 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Wu, Hao" X-Patchwork-Id: 11018753 X-Patchwork-Delegate: moritz.fischer@ettus.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BECAD17D2 for ; Thu, 27 Jun 2019 05:02:41 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AF574287CF for ; Thu, 27 Jun 2019 05:02:41 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A32FB28A18; Thu, 27 Jun 2019 05:02:41 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D3DF228A13 for ; Thu, 27 Jun 2019 05:02:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727320AbfF0FCD (ORCPT ); Thu, 27 Jun 2019 01:02:03 -0400 Received: from mga11.intel.com ([192.55.52.93]:22936 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727319AbfF0FCC (ORCPT ); Thu, 27 Jun 2019 01:02:02 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 26 Jun 2019 22:02:02 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.63,422,1557212400"; d="scan'208";a="173005057" Received: from hao-dev.bj.intel.com ([10.238.157.65]) by orsmga002.jf.intel.com with ESMTP; 26 Jun 2019 22:01:59 -0700 From: Wu Hao To: mdf@kernel.org, linux-fpga@vger.kernel.org, linux-kernel@vger.kernel.org Cc: linux-api@vger.kernel.org, yilun.xu@intel.com, hao.wu@intel.com, gregkh@linuxfoundation.org, atull@kernel.org, Zhang Yi Z Subject: [PATCH v4 06/15] fpga: dfl: fme: add DFL_FPGA_FME_PORT_RELEASE/ASSIGN ioctl support. Date: Thu, 27 Jun 2019 12:44:46 +0800 Message-Id: <1561610695-5414-7-git-send-email-hao.wu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1561610695-5414-1-git-send-email-hao.wu@intel.com> References: <1561610695-5414-1-git-send-email-hao.wu@intel.com> Sender: linux-fpga-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fpga@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP In order to support virtualization usage via PCIe SRIOV, this patch adds two ioctls under FPGA Management Engine (FME) to release and assign back the port device. In order to safely turn Port from PF into VF and enable PCIe SRIOV, it requires user to invoke this PORT_RELEASE ioctl to release port firstly to remove userspace interfaces, and then configure the PF/VF access register in FME. After disable SRIOV, it requires user to invoke this PORT_ASSIGN ioctl to attach the port back to PF. Ioctl interfaces: * DFL_FPGA_FME_PORT_RELEASE Release platform device of given port, it deletes port platform device to remove related userspace interfaces on PF, then configures PF/VF access mode to VF. * DFL_FPGA_FME_PORT_ASSIGN Assign platform device of given port back to PF, it configures PF/VF access mode to PF, then adds port platform device back to re-enable related userspace interfaces on PF. Signed-off-by: Zhang Yi Z Signed-off-by: Xu Yilun Signed-off-by: Wu Hao Acked-by: Alan Tull Acked-by: Moritz Fischer --- v3: code rebase. v4: no change. --- drivers/fpga/dfl-fme-main.c | 54 +++++++++++++++++++++ drivers/fpga/dfl.c | 107 +++++++++++++++++++++++++++++++++++++----- drivers/fpga/dfl.h | 10 ++++ include/uapi/linux/fpga-dfl.h | 32 +++++++++++++ 4 files changed, 191 insertions(+), 12 deletions(-) diff --git a/drivers/fpga/dfl-fme-main.c b/drivers/fpga/dfl-fme-main.c index 076d74f..8b2a337 100644 --- a/drivers/fpga/dfl-fme-main.c +++ b/drivers/fpga/dfl-fme-main.c @@ -16,6 +16,7 @@ #include #include +#include #include #include "dfl.h" @@ -105,9 +106,62 @@ static void fme_hdr_uinit(struct platform_device *pdev, sysfs_remove_files(&pdev->dev.kobj, fme_hdr_attrs); } +static long fme_hdr_ioctl_release_port(struct dfl_feature_platform_data *pdata, + void __user *arg) +{ + struct dfl_fpga_cdev *cdev = pdata->dfl_cdev; + struct dfl_fpga_fme_port_release release; + unsigned long minsz; + + minsz = offsetofend(struct dfl_fpga_fme_port_release, port_id); + + if (copy_from_user(&release, arg, minsz)) + return -EFAULT; + + if (release.argsz < minsz || release.flags) + return -EINVAL; + + return dfl_fpga_cdev_config_port(cdev, release.port_id, true); +} + +static long fme_hdr_ioctl_assign_port(struct dfl_feature_platform_data *pdata, + void __user *arg) +{ + struct dfl_fpga_cdev *cdev = pdata->dfl_cdev; + struct dfl_fpga_fme_port_assign assign; + unsigned long minsz; + + minsz = offsetofend(struct dfl_fpga_fme_port_assign, port_id); + + if (copy_from_user(&assign, arg, minsz)) + return -EFAULT; + + if (assign.argsz < minsz || assign.flags) + return -EINVAL; + + return dfl_fpga_cdev_config_port(cdev, assign.port_id, false); +} + +static long fme_hdr_ioctl(struct platform_device *pdev, + struct dfl_feature *feature, + unsigned int cmd, unsigned long arg) +{ + struct dfl_feature_platform_data *pdata = dev_get_platdata(&pdev->dev); + + switch (cmd) { + case DFL_FPGA_FME_PORT_RELEASE: + return fme_hdr_ioctl_release_port(pdata, (void __user *)arg); + case DFL_FPGA_FME_PORT_ASSIGN: + return fme_hdr_ioctl_assign_port(pdata, (void __user *)arg); + } + + return -ENODEV; +} + static const struct dfl_feature_ops fme_hdr_ops = { .init = fme_hdr_init, .uinit = fme_hdr_uinit, + .ioctl = fme_hdr_ioctl, }; static struct dfl_feature_driver fme_feature_drvs[] = { diff --git a/drivers/fpga/dfl.c b/drivers/fpga/dfl.c index 4b66aaa..308c808 100644 --- a/drivers/fpga/dfl.c +++ b/drivers/fpga/dfl.c @@ -231,16 +231,20 @@ void dfl_fpga_port_ops_del(struct dfl_fpga_port_ops *ops) */ int dfl_fpga_check_port_id(struct platform_device *pdev, void *pport_id) { - struct dfl_fpga_port_ops *port_ops = dfl_fpga_port_ops_get(pdev); - int port_id; + struct dfl_feature_platform_data *pdata = dev_get_platdata(&pdev->dev); + struct dfl_fpga_port_ops *port_ops; + + if (pdata->id != FEATURE_DEV_ID_UNUSED) + return pdata->id == *(int *)pport_id; + port_ops = dfl_fpga_port_ops_get(pdev); if (!port_ops || !port_ops->get_id) return 0; - port_id = port_ops->get_id(pdev); + pdata->id = port_ops->get_id(pdev); dfl_fpga_port_ops_put(port_ops); - return port_id == *(int *)pport_id; + return pdata->id == *(int *)pport_id; } EXPORT_SYMBOL_GPL(dfl_fpga_check_port_id); @@ -474,6 +478,7 @@ static int build_info_commit_dev(struct build_feature_devs_info *binfo) pdata->dev = fdev; pdata->num = binfo->feature_num; pdata->dfl_cdev = binfo->cdev; + pdata->id = FEATURE_DEV_ID_UNUSED; mutex_init(&pdata->lock); lockdep_set_class_and_name(&pdata->lock, &dfl_pdata_keys[type], dfl_pdata_key_strings[type]); @@ -973,25 +978,27 @@ void dfl_fpga_feature_devs_remove(struct dfl_fpga_cdev *cdev) { struct dfl_feature_platform_data *pdata, *ptmp; - remove_feature_devs(cdev); - mutex_lock(&cdev->lock); - if (cdev->fme_dev) { - /* the fme should be unregistered. */ - WARN_ON(device_is_registered(cdev->fme_dev)); + if (cdev->fme_dev) put_device(cdev->fme_dev); - } list_for_each_entry_safe(pdata, ptmp, &cdev->port_dev_list, node) { struct platform_device *port_dev = pdata->dev; - /* the port should be unregistered. */ - WARN_ON(device_is_registered(&port_dev->dev)); + /* remove released ports */ + if (!device_is_registered(&port_dev->dev)) { + dfl_id_free(feature_dev_id_type(port_dev), + port_dev->id); + platform_device_put(port_dev); + } + list_del(&pdata->node); put_device(&port_dev->dev); } mutex_unlock(&cdev->lock); + remove_feature_devs(cdev); + fpga_region_unregister(cdev->region); devm_kfree(cdev->parent, cdev); } @@ -1029,6 +1036,82 @@ struct platform_device * } EXPORT_SYMBOL_GPL(__dfl_fpga_cdev_find_port); +static int attach_port_dev(struct dfl_fpga_cdev *cdev, u32 port_id) +{ + struct platform_device *port_pdev; + int ret = -ENODEV; + + mutex_lock(&cdev->lock); + port_pdev = __dfl_fpga_cdev_find_port(cdev, &port_id, + dfl_fpga_check_port_id); + if (!port_pdev) + goto unlock_exit; + + if (device_is_registered(&port_pdev->dev)) { + ret = -EBUSY; + goto put_dev_exit; + } + + ret = platform_device_add(port_pdev); + if (ret) + goto put_dev_exit; + + dfl_feature_dev_use_end(dev_get_platdata(&port_pdev->dev)); + cdev->released_port_num--; +put_dev_exit: + put_device(&port_pdev->dev); +unlock_exit: + mutex_unlock(&cdev->lock); + return ret; +} + +static int detach_port_dev(struct dfl_fpga_cdev *cdev, u32 port_id) +{ + struct platform_device *port_pdev; + int ret = -ENODEV; + + mutex_lock(&cdev->lock); + port_pdev = __dfl_fpga_cdev_find_port(cdev, &port_id, + dfl_fpga_check_port_id); + if (!port_pdev) + goto unlock_exit; + + if (!device_is_registered(&port_pdev->dev)) { + ret = -EBUSY; + goto put_dev_exit; + } + + ret = dfl_feature_dev_use_begin(dev_get_platdata(&port_pdev->dev)); + if (ret) + goto put_dev_exit; + + platform_device_del(port_pdev); + cdev->released_port_num++; +put_dev_exit: + put_device(&port_pdev->dev); +unlock_exit: + mutex_unlock(&cdev->lock); + return ret; +} + +/** + * dfl_fpga_cdev_config_port - configure a port feature dev + * @cdev: parent container device. + * @port_id: id of the port feature device. + * @release: release port or assign port back. + * + * This function allows user to release port platform device or assign it back. + * e.g. to safely turn one port from PF into VF for PCI device SRIOV support, + * release port platform device is one necessary step. + */ +int dfl_fpga_cdev_config_port(struct dfl_fpga_cdev *cdev, + u32 port_id, bool release) +{ + return release ? detach_port_dev(cdev, port_id) : + attach_port_dev(cdev, port_id); +} +EXPORT_SYMBOL_GPL(dfl_fpga_cdev_config_port); + static int __init dfl_fpga_init(void) { int ret; diff --git a/drivers/fpga/dfl.h b/drivers/fpga/dfl.h index 8851c6c..63f39ab 100644 --- a/drivers/fpga/dfl.h +++ b/drivers/fpga/dfl.h @@ -183,6 +183,8 @@ struct dfl_feature { #define DEV_STATUS_IN_USE 0 +#define FEATURE_DEV_ID_UNUSED (-1) + /** * struct dfl_feature_platform_data - platform data for feature devices * @@ -191,6 +193,7 @@ struct dfl_feature { * @cdev: cdev of feature dev. * @dev: ptr to platform device linked with this platform data. * @dfl_cdev: ptr to container device. + * @id: id used for this feature device. * @disable_count: count for port disable. * @num: number for sub features. * @dev_status: dev status (e.g. DEV_STATUS_IN_USE). @@ -203,6 +206,7 @@ struct dfl_feature_platform_data { struct cdev cdev; struct platform_device *dev; struct dfl_fpga_cdev *dfl_cdev; + int id; unsigned int disable_count; unsigned long dev_status; void *private; @@ -378,6 +382,7 @@ int dfl_fpga_enum_info_add_dfl(struct dfl_fpga_enum_info *info, * @fme_dev: FME feature device under this container device. * @lock: mutex lock to protect the port device list. * @port_dev_list: list of all port feature devices under this container device. + * @released_port_num: released port number under this container device. */ struct dfl_fpga_cdev { struct device *parent; @@ -385,6 +390,7 @@ struct dfl_fpga_cdev { struct device *fme_dev; struct mutex lock; struct list_head port_dev_list; + int released_port_num; }; struct dfl_fpga_cdev * @@ -412,4 +418,8 @@ struct platform_device * return pdev; } + +int dfl_fpga_cdev_config_port(struct dfl_fpga_cdev *cdev, + u32 port_id, bool release); + #endif /* __FPGA_DFL_H */ diff --git a/include/uapi/linux/fpga-dfl.h b/include/uapi/linux/fpga-dfl.h index 2e324e5..e9a00e0 100644 --- a/include/uapi/linux/fpga-dfl.h +++ b/include/uapi/linux/fpga-dfl.h @@ -176,4 +176,36 @@ struct dfl_fpga_fme_port_pr { #define DFL_FPGA_FME_PORT_PR _IO(DFL_FPGA_MAGIC, DFL_FME_BASE + 0) +/** + * DFL_FPGA_FME_PORT_RELEASE - _IOW(DFL_FPGA_MAGIC, DFL_FME_BASE + 1, + * struct dfl_fpga_fme_port_release) + * + * Driver releases the port per Port ID provided by caller. + * Return: 0 on success, -errno on failure. + */ +struct dfl_fpga_fme_port_release { + /* Input */ + __u32 argsz; /* Structure length */ + __u32 flags; /* Zero for now */ + __u32 port_id; +}; + +#define DFL_FPGA_FME_PORT_RELEASE _IO(DFL_FPGA_MAGIC, DFL_FME_BASE + 1) + +/** + * DFL_FPGA_FME_PORT_ASSIGN - _IOW(DFL_FPGA_MAGIC, DFL_FME_BASE + 2, + * struct dfl_fpga_fme_port_assign) + * + * Driver assigns the port back per Port ID provided by caller. + * Return: 0 on success, -errno on failure. + */ +struct dfl_fpga_fme_port_assign { + /* Input */ + __u32 argsz; /* Structure length */ + __u32 flags; /* Zero for now */ + __u32 port_id; +}; + +#define DFL_FPGA_FME_PORT_ASSIGN _IO(DFL_FPGA_MAGIC, DFL_FME_BASE + 2) + #endif /* _UAPI_LINUX_FPGA_DFL_H */ From patchwork Thu Jun 27 04:44:47 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Wu, Hao" X-Patchwork-Id: 11018751 X-Patchwork-Delegate: moritz.fischer@ettus.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2C65F1398 for ; Thu, 27 Jun 2019 05:02:41 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1E8A7287CF for ; Thu, 27 Jun 2019 05:02:41 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 12F9228A19; Thu, 27 Jun 2019 05:02:41 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 97A7B287CF for ; Thu, 27 Jun 2019 05:02:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727348AbfF0FCG (ORCPT ); Thu, 27 Jun 2019 01:02:06 -0400 Received: from mga11.intel.com ([192.55.52.93]:22936 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727334AbfF0FCE (ORCPT ); Thu, 27 Jun 2019 01:02:04 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 26 Jun 2019 22:02:04 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.63,422,1557212400"; d="scan'208";a="173005073" Received: from hao-dev.bj.intel.com ([10.238.157.65]) by orsmga002.jf.intel.com with ESMTP; 26 Jun 2019 22:02:02 -0700 From: Wu Hao To: mdf@kernel.org, linux-fpga@vger.kernel.org, linux-kernel@vger.kernel.org Cc: linux-api@vger.kernel.org, yilun.xu@intel.com, hao.wu@intel.com, gregkh@linuxfoundation.org, atull@kernel.org, Zhang Yi Z Subject: [PATCH v4 07/15] fpga: dfl: pci: enable SRIOV support. Date: Thu, 27 Jun 2019 12:44:47 +0800 Message-Id: <1561610695-5414-8-git-send-email-hao.wu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1561610695-5414-1-git-send-email-hao.wu@intel.com> References: <1561610695-5414-1-git-send-email-hao.wu@intel.com> Sender: linux-fpga-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fpga@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch enables the standard sriov support. It allows user to enable SRIOV (and VFs), then user could pass through accelerators (VFs) into virtual machine or use VFs directly in host. Signed-off-by: Zhang Yi Z Signed-off-by: Xu Yilun Signed-off-by: Wu Hao Acked-by: Alan Tull Acked-by: Moritz Fischer --- drivers/fpga/dfl-pci.c | 40 ++++++++++++++++++++++++++++++++++++++++ drivers/fpga/dfl.c | 41 +++++++++++++++++++++++++++++++++++++++++ drivers/fpga/dfl.h | 1 + 3 files changed, 82 insertions(+) diff --git a/drivers/fpga/dfl-pci.c b/drivers/fpga/dfl-pci.c index 66b5720..2fa571b 100644 --- a/drivers/fpga/dfl-pci.c +++ b/drivers/fpga/dfl-pci.c @@ -223,8 +223,46 @@ int cci_pci_probe(struct pci_dev *pcidev, const struct pci_device_id *pcidevid) return ret; } +static int cci_pci_sriov_configure(struct pci_dev *pcidev, int num_vfs) +{ + struct cci_drvdata *drvdata = pci_get_drvdata(pcidev); + struct dfl_fpga_cdev *cdev = drvdata->cdev; + int ret = 0; + + mutex_lock(&cdev->lock); + + if (!num_vfs) { + /* + * disable SRIOV and then put released ports back to default + * PF access mode. + */ + pci_disable_sriov(pcidev); + + __dfl_fpga_cdev_config_port_vf(cdev, false); + + } else if (cdev->released_port_num == num_vfs) { + /* + * only enable SRIOV if cdev has matched released ports, put + * released ports into VF access mode firstly. + */ + __dfl_fpga_cdev_config_port_vf(cdev, true); + + ret = pci_enable_sriov(pcidev, num_vfs); + if (ret) + __dfl_fpga_cdev_config_port_vf(cdev, false); + } else { + ret = -EINVAL; + } + + mutex_unlock(&cdev->lock); + return ret; +} + static void cci_pci_remove(struct pci_dev *pcidev) { + if (dev_is_pf(&pcidev->dev)) + cci_pci_sriov_configure(pcidev, 0); + cci_remove_feature_devs(pcidev); pci_disable_pcie_error_reporting(pcidev); } @@ -234,6 +272,7 @@ static void cci_pci_remove(struct pci_dev *pcidev) .id_table = cci_pcie_id_tbl, .probe = cci_pci_probe, .remove = cci_pci_remove, + .sriov_configure = cci_pci_sriov_configure, }; module_pci_driver(cci_pci_driver); @@ -241,3 +280,4 @@ static void cci_pci_remove(struct pci_dev *pcidev) MODULE_DESCRIPTION("FPGA DFL PCIe Device Driver"); MODULE_AUTHOR("Intel Corporation"); MODULE_LICENSE("GPL v2"); +MODULE_VERSION(DRV_VERSION); diff --git a/drivers/fpga/dfl.c b/drivers/fpga/dfl.c index 308c808..28d61b6 100644 --- a/drivers/fpga/dfl.c +++ b/drivers/fpga/dfl.c @@ -1112,6 +1112,47 @@ int dfl_fpga_cdev_config_port(struct dfl_fpga_cdev *cdev, } EXPORT_SYMBOL_GPL(dfl_fpga_cdev_config_port); +static void config_port_vf(struct device *fme_dev, int port_id, bool is_vf) +{ + void __iomem *base; + u64 v; + + base = dfl_get_feature_ioaddr_by_id(fme_dev, FME_FEATURE_ID_HEADER); + + v = readq(base + FME_HDR_PORT_OFST(port_id)); + + v &= ~FME_PORT_OFST_ACC_CTRL; + v |= FIELD_PREP(FME_PORT_OFST_ACC_CTRL, + is_vf ? FME_PORT_OFST_ACC_VF : FME_PORT_OFST_ACC_PF); + + writeq(v, base + FME_HDR_PORT_OFST(port_id)); +} + +/** + * __dfl_fpga_cdev_config_port_vf - configure port to VF access mode + * + * @cdev: parent container device. + * @if_vf: true for VF access mode, and false for PF access mode + * + * Return: 0 on success, negative error code otherwise. + * + * This function is needed in sriov configuration routine. It could be used to + * configures the released ports access mode to VF or PF. + * The caller needs to hold lock for protection. + */ +void __dfl_fpga_cdev_config_port_vf(struct dfl_fpga_cdev *cdev, bool is_vf) +{ + struct dfl_feature_platform_data *pdata; + + list_for_each_entry(pdata, &cdev->port_dev_list, node) { + if (device_is_registered(&pdata->dev->dev)) + continue; + + config_port_vf(cdev->fme_dev, pdata->id, is_vf); + } +} +EXPORT_SYMBOL_GPL(__dfl_fpga_cdev_config_port_vf); + static int __init dfl_fpga_init(void) { int ret; diff --git a/drivers/fpga/dfl.h b/drivers/fpga/dfl.h index 63f39ab..1350e8e 100644 --- a/drivers/fpga/dfl.h +++ b/drivers/fpga/dfl.h @@ -421,5 +421,6 @@ struct platform_device * int dfl_fpga_cdev_config_port(struct dfl_fpga_cdev *cdev, u32 port_id, bool release); +void __dfl_fpga_cdev_config_port_vf(struct dfl_fpga_cdev *cdev, bool is_vf); #endif /* __FPGA_DFL_H */ From patchwork Thu Jun 27 04:44:48 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Wu, Hao" X-Patchwork-Id: 11018747 X-Patchwork-Delegate: moritz.fischer@ettus.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3E886112C for ; Thu, 27 Jun 2019 05:02:40 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2E71128A18 for ; Thu, 27 Jun 2019 05:02:40 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 22C5528A19; Thu, 27 Jun 2019 05:02:40 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 744CB287CF for ; Thu, 27 Jun 2019 05:02:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727370AbfF0FCJ (ORCPT ); Thu, 27 Jun 2019 01:02:09 -0400 Received: from mga11.intel.com ([192.55.52.93]:22936 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727350AbfF0FCG (ORCPT ); Thu, 27 Jun 2019 01:02:06 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 26 Jun 2019 22:02:06 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.63,422,1557212400"; d="scan'208";a="173005088" Received: from hao-dev.bj.intel.com ([10.238.157.65]) by orsmga002.jf.intel.com with ESMTP; 26 Jun 2019 22:02:04 -0700 From: Wu Hao To: mdf@kernel.org, linux-fpga@vger.kernel.org, linux-kernel@vger.kernel.org Cc: linux-api@vger.kernel.org, yilun.xu@intel.com, hao.wu@intel.com, gregkh@linuxfoundation.org, atull@kernel.org, Ananda Ravuri Subject: [PATCH v4 08/15] fpga: dfl: afu: add AFU state related sysfs interfaces Date: Thu, 27 Jun 2019 12:44:48 +0800 Message-Id: <1561610695-5414-9-git-send-email-hao.wu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1561610695-5414-1-git-send-email-hao.wu@intel.com> References: <1561610695-5414-1-git-send-email-hao.wu@intel.com> Sender: linux-fpga-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fpga@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch introduces more sysfs interfaces for Accelerated Function Unit (AFU). These interfaces allow users to read current AFU Power State (APx), read / clear AFU Power (APx) events which are sticky to identify transient APx state, and manage AFU's LTR (latency tolerance reporting). Signed-off-by: Ananda Ravuri Signed-off-by: Xu Yilun Signed-off-by: Wu Hao Acked-by: Alan Tull --- v3: replace scnprintf with sprintf in sysfs interfaces. update sysfs doc kernel version and date. v4: update sysfs doc date. --- Documentation/ABI/testing/sysfs-platform-dfl-port | 30 +++++ drivers/fpga/dfl-afu-main.c | 140 ++++++++++++++++++++++ drivers/fpga/dfl.h | 11 ++ 3 files changed, 181 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-platform-dfl-port b/Documentation/ABI/testing/sysfs-platform-dfl-port index 6a92dda..17b37d1 100644 --- a/Documentation/ABI/testing/sysfs-platform-dfl-port +++ b/Documentation/ABI/testing/sysfs-platform-dfl-port @@ -14,3 +14,33 @@ Description: Read-only. User can program different PR bitstreams to FPGA Accelerator Function Unit (AFU) for different functions. It returns uuid which could be used to identify which PR bitstream is programmed in this AFU. + +What: /sys/bus/platform/devices/dfl-port.0/power_state +Date: June 2019 +KernelVersion: 5.3 +Contact: Wu Hao +Description: Read-only. It reports the APx (AFU Power) state, different APx + means different throttling level. When reading this file, it + returns "0" - Normal / "1" - AP1 / "2" - AP2 / "6" - AP6. + +What: /sys/bus/platform/devices/dfl-port.0/ap1_event +Date: June 2019 +KernelVersion: 5.3 +Contact: Wu Hao +Description: Read-write. Read or set 1 to clear AP1 (AFU Power State 1) + event. It's used to indicate transient AP1 state. + +What: /sys/bus/platform/devices/dfl-port.0/ap2_event +Date: June 2019 +KernelVersion: 5.3 +Contact: Wu Hao +Description: Read-write. Read or set 1 to clear AP2 (AFU Power State 2) + event. It's used to indicate transient AP2 state. + +What: /sys/bus/platform/devices/dfl-port.0/ltr +Date: June 2019 +KernelVersion: 5.3 +Contact: Wu Hao +Description: Read-write. Read and set AFU latency tolerance reporting value. + Set ltr to 1 if the AFU can tolerate latency >= 40us or set it + to 0 if it is latency sensitive. diff --git a/drivers/fpga/dfl-afu-main.c b/drivers/fpga/dfl-afu-main.c index 02baa6a..040ed8a 100644 --- a/drivers/fpga/dfl-afu-main.c +++ b/drivers/fpga/dfl-afu-main.c @@ -21,6 +21,8 @@ #include "dfl-afu.h" +#define DRV_VERSION "0.8" + /** * port_enable - enable a port * @pdev: port platform device. @@ -141,8 +143,145 @@ static int port_get_id(struct platform_device *pdev) } static DEVICE_ATTR_RO(id); +static ssize_t +ltr_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct dfl_feature_platform_data *pdata = dev_get_platdata(dev); + void __iomem *base; + u64 v; + + base = dfl_get_feature_ioaddr_by_id(dev, PORT_FEATURE_ID_HEADER); + + mutex_lock(&pdata->lock); + v = readq(base + PORT_HDR_CTRL); + mutex_unlock(&pdata->lock); + + return sprintf(buf, "%x\n", (u8)FIELD_GET(PORT_CTRL_LATENCY, v)); +} + +static ssize_t +ltr_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct dfl_feature_platform_data *pdata = dev_get_platdata(dev); + void __iomem *base; + u8 ltr; + u64 v; + + if (kstrtou8(buf, 0, <r) || ltr > 1) + return -EINVAL; + + base = dfl_get_feature_ioaddr_by_id(dev, PORT_FEATURE_ID_HEADER); + + mutex_lock(&pdata->lock); + v = readq(base + PORT_HDR_CTRL); + v &= ~PORT_CTRL_LATENCY; + v |= FIELD_PREP(PORT_CTRL_LATENCY, ltr); + writeq(v, base + PORT_HDR_CTRL); + mutex_unlock(&pdata->lock); + + return count; +} +static DEVICE_ATTR_RW(ltr); + +static ssize_t +ap1_event_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct dfl_feature_platform_data *pdata = dev_get_platdata(dev); + void __iomem *base; + u64 v; + + base = dfl_get_feature_ioaddr_by_id(dev, PORT_FEATURE_ID_HEADER); + + mutex_lock(&pdata->lock); + v = readq(base + PORT_HDR_STS); + mutex_unlock(&pdata->lock); + + return sprintf(buf, "%x\n", (u8)FIELD_GET(PORT_STS_AP1_EVT, v)); +} + +static ssize_t +ap1_event_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct dfl_feature_platform_data *pdata = dev_get_platdata(dev); + void __iomem *base; + u8 ap1_event; + + if (kstrtou8(buf, 0, &ap1_event) || ap1_event != 1) + return -EINVAL; + + base = dfl_get_feature_ioaddr_by_id(dev, PORT_FEATURE_ID_HEADER); + + mutex_lock(&pdata->lock); + writeq(PORT_STS_AP1_EVT, base + PORT_HDR_STS); + mutex_unlock(&pdata->lock); + + return count; +} +static DEVICE_ATTR_RW(ap1_event); + +static ssize_t +ap2_event_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct dfl_feature_platform_data *pdata = dev_get_platdata(dev); + void __iomem *base; + u64 v; + + base = dfl_get_feature_ioaddr_by_id(dev, PORT_FEATURE_ID_HEADER); + + mutex_lock(&pdata->lock); + v = readq(base + PORT_HDR_STS); + mutex_unlock(&pdata->lock); + + return sprintf(buf, "%x\n", (u8)FIELD_GET(PORT_STS_AP2_EVT, v)); +} + +static ssize_t +ap2_event_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct dfl_feature_platform_data *pdata = dev_get_platdata(dev); + void __iomem *base; + u8 ap2_event; + + if (kstrtou8(buf, 0, &ap2_event) || ap2_event != 1) + return -EINVAL; + + base = dfl_get_feature_ioaddr_by_id(dev, PORT_FEATURE_ID_HEADER); + + mutex_lock(&pdata->lock); + writeq(PORT_STS_AP2_EVT, base + PORT_HDR_STS); + mutex_unlock(&pdata->lock); + + return count; +} +static DEVICE_ATTR_RW(ap2_event); + +static ssize_t +power_state_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct dfl_feature_platform_data *pdata = dev_get_platdata(dev); + void __iomem *base; + u64 v; + + base = dfl_get_feature_ioaddr_by_id(dev, PORT_FEATURE_ID_HEADER); + + mutex_lock(&pdata->lock); + v = readq(base + PORT_HDR_STS); + mutex_unlock(&pdata->lock); + + return sprintf(buf, "0x%x\n", (u8)FIELD_GET(PORT_STS_PWR_STATE, v)); +} +static DEVICE_ATTR_RO(power_state); + static const struct attribute *port_hdr_attrs[] = { &dev_attr_id.attr, + &dev_attr_ltr.attr, + &dev_attr_ap1_event.attr, + &dev_attr_ap2_event.attr, + &dev_attr_power_state.attr, NULL, }; @@ -634,3 +773,4 @@ static void __exit afu_exit(void) MODULE_AUTHOR("Intel Corporation"); MODULE_LICENSE("GPL v2"); MODULE_ALIAS("platform:dfl-port"); +MODULE_VERSION(DRV_VERSION); diff --git a/drivers/fpga/dfl.h b/drivers/fpga/dfl.h index 1350e8e..1525098 100644 --- a/drivers/fpga/dfl.h +++ b/drivers/fpga/dfl.h @@ -119,6 +119,7 @@ #define PORT_HDR_NEXT_AFU NEXT_AFU #define PORT_HDR_CAP 0x30 #define PORT_HDR_CTRL 0x38 +#define PORT_HDR_STS 0x40 /* Port Capability Register Bitfield */ #define PORT_CAP_PORT_NUM GENMASK_ULL(1, 0) /* ID of this port */ @@ -130,6 +131,16 @@ /* Latency tolerance reporting. '1' >= 40us, '0' < 40us.*/ #define PORT_CTRL_LATENCY BIT_ULL(2) #define PORT_CTRL_SFTRST_ACK BIT_ULL(4) /* HW ack for reset */ + +/* Port Status Register Bitfield */ +#define PORT_STS_AP2_EVT BIT_ULL(13) /* AP2 event detected */ +#define PORT_STS_AP1_EVT BIT_ULL(12) /* AP1 event detected */ +#define PORT_STS_PWR_STATE GENMASK_ULL(11, 8) /* AFU power states */ +#define PORT_STS_PWR_STATE_NORM 0 +#define PORT_STS_PWR_STATE_AP1 1 /* 50% throttling */ +#define PORT_STS_PWR_STATE_AP2 2 /* 90% throttling */ +#define PORT_STS_PWR_STATE_AP6 6 /* 100% throttling */ + /** * struct dfl_fpga_port_ops - port ops * From patchwork Thu Jun 27 04:44:49 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Wu, Hao" X-Patchwork-Id: 11018749 X-Patchwork-Delegate: moritz.fischer@ettus.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 581531398 for ; Thu, 27 Jun 2019 05:02:40 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 49084287CF for ; Thu, 27 Jun 2019 05:02:40 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3C79428A1B; Thu, 27 Jun 2019 05:02:40 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9E4F528A13 for ; Thu, 27 Jun 2019 05:02:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727365AbfF0FCJ (ORCPT ); Thu, 27 Jun 2019 01:02:09 -0400 Received: from mga11.intel.com ([192.55.52.93]:22936 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727334AbfF0FCI (ORCPT ); Thu, 27 Jun 2019 01:02:08 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 26 Jun 2019 22:02:08 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.63,422,1557212400"; d="scan'208";a="173005096" Received: from hao-dev.bj.intel.com ([10.238.157.65]) by orsmga002.jf.intel.com with ESMTP; 26 Jun 2019 22:02:06 -0700 From: Wu Hao To: mdf@kernel.org, linux-fpga@vger.kernel.org, linux-kernel@vger.kernel.org Cc: linux-api@vger.kernel.org, yilun.xu@intel.com, hao.wu@intel.com, gregkh@linuxfoundation.org, atull@kernel.org, Ananda Ravuri , Russ Weight Subject: [PATCH v4 09/15] fpga: dfl: afu: add userclock sysfs interfaces. Date: Thu, 27 Jun 2019 12:44:49 +0800 Message-Id: <1561610695-5414-10-git-send-email-hao.wu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1561610695-5414-1-git-send-email-hao.wu@intel.com> References: <1561610695-5414-1-git-send-email-hao.wu@intel.com> Sender: linux-fpga-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fpga@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch introduces userclock sysfs interfaces for AFU, user could use these interfaces for clock setting to AFU. Please note that, this is only working for port header feature with revision 0, for later revisions, userclock setting is moved to a separated private feature, so one revision sysfs interface is exposed to userspace application for this purpose too. Signed-off-by: Ananda Ravuri Signed-off-by: Russ Weight Signed-off-by: Xu Yilun Signed-off-by: Wu Hao Acked-by: Alan Tull --- v3: replace scnprintf with sprintf in sysfs interfaces. update sysfs doc kernel version and date. v4: update sysfs doc date. --- Documentation/ABI/testing/sysfs-platform-dfl-port | 35 +++++++ drivers/fpga/dfl-afu-main.c | 113 +++++++++++++++++++++- drivers/fpga/dfl.h | 4 + 3 files changed, 151 insertions(+), 1 deletion(-) diff --git a/Documentation/ABI/testing/sysfs-platform-dfl-port b/Documentation/ABI/testing/sysfs-platform-dfl-port index 17b37d1..04ea7f2 100644 --- a/Documentation/ABI/testing/sysfs-platform-dfl-port +++ b/Documentation/ABI/testing/sysfs-platform-dfl-port @@ -44,3 +44,38 @@ Contact: Wu Hao Description: Read-write. Read and set AFU latency tolerance reporting value. Set ltr to 1 if the AFU can tolerate latency >= 40us or set it to 0 if it is latency sensitive. + +What: /sys/bus/platform/devices/dfl-port.0/revision +Date: June 2019 +KernelVersion: 5.3 +Contact: Wu Hao +Description: Read-only. Read this file to get the revision of port header + feature. + +What: /sys/bus/platform/devices/dfl-port.0/userclk_freqcmd +Date: June 2019 +KernelVersion: 5.3 +Contact: Wu Hao +Description: Write-only. User writes command to this interface to set + userclock to AFU. + +What: /sys/bus/platform/devices/dfl-port.0/userclk_freqsts +Date: June 2019 +KernelVersion: 5.3 +Contact: Wu Hao +Description: Read-only. Read this file to get the status of issued command + to userclck_freqcmd. + +What: /sys/bus/platform/devices/dfl-port.0/userclk_freqcntrcmd +Date: June 2019 +KernelVersion: 5.3 +Contact: Wu Hao +Description: Write-only. User writes command to this interface to set + userclock counter. + +What: /sys/bus/platform/devices/dfl-port.0/userclk_freqcntrsts +Date: June 2019 +KernelVersion: 5.3 +Contact: Wu Hao +Description: Read-only. Read this file to get the status of issued command + to userclck_freqcntrcmd. diff --git a/drivers/fpga/dfl-afu-main.c b/drivers/fpga/dfl-afu-main.c index 040ed8a..8b434a4 100644 --- a/drivers/fpga/dfl-afu-main.c +++ b/drivers/fpga/dfl-afu-main.c @@ -144,6 +144,17 @@ static int port_get_id(struct platform_device *pdev) static DEVICE_ATTR_RO(id); static ssize_t +revision_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + void __iomem *base; + + base = dfl_get_feature_ioaddr_by_id(dev, PORT_FEATURE_ID_HEADER); + + return sprintf(buf, "%x\n", dfl_feature_revision(base)); +} +static DEVICE_ATTR_RO(revision); + +static ssize_t ltr_show(struct device *dev, struct device_attribute *attr, char *buf) { struct dfl_feature_platform_data *pdata = dev_get_platdata(dev); @@ -278,6 +289,7 @@ static int port_get_id(struct platform_device *pdev) static const struct attribute *port_hdr_attrs[] = { &dev_attr_id.attr, + &dev_attr_revision.attr, &dev_attr_ltr.attr, &dev_attr_ap1_event.attr, &dev_attr_ap2_event.attr, @@ -285,14 +297,112 @@ static int port_get_id(struct platform_device *pdev) NULL, }; +static ssize_t +userclk_freqcmd_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct dfl_feature_platform_data *pdata = dev_get_platdata(dev); + u64 userclk_freq_cmd; + void __iomem *base; + + if (kstrtou64(buf, 0, &userclk_freq_cmd)) + return -EINVAL; + + base = dfl_get_feature_ioaddr_by_id(dev, PORT_FEATURE_ID_HEADER); + + mutex_lock(&pdata->lock); + writeq(userclk_freq_cmd, base + PORT_HDR_USRCLK_CMD0); + mutex_unlock(&pdata->lock); + + return count; +} +static DEVICE_ATTR_WO(userclk_freqcmd); + +static ssize_t +userclk_freqcntrcmd_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct dfl_feature_platform_data *pdata = dev_get_platdata(dev); + u64 userclk_freqcntr_cmd; + void __iomem *base; + + if (kstrtou64(buf, 0, &userclk_freqcntr_cmd)) + return -EINVAL; + + base = dfl_get_feature_ioaddr_by_id(dev, PORT_FEATURE_ID_HEADER); + + mutex_lock(&pdata->lock); + writeq(userclk_freqcntr_cmd, base + PORT_HDR_USRCLK_CMD1); + mutex_unlock(&pdata->lock); + + return count; +} +static DEVICE_ATTR_WO(userclk_freqcntrcmd); + +static ssize_t +userclk_freqsts_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + u64 userclk_freqsts; + void __iomem *base; + + base = dfl_get_feature_ioaddr_by_id(dev, PORT_FEATURE_ID_HEADER); + + userclk_freqsts = readq(base + PORT_HDR_USRCLK_STS0); + + return sprintf(buf, "0x%llx\n", (unsigned long long)userclk_freqsts); +} +static DEVICE_ATTR_RO(userclk_freqsts); + +static ssize_t +userclk_freqcntrsts_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + u64 userclk_freqcntrsts; + void __iomem *base; + + base = dfl_get_feature_ioaddr_by_id(dev, PORT_FEATURE_ID_HEADER); + + userclk_freqcntrsts = readq(base + PORT_HDR_USRCLK_STS1); + + return sprintf(buf, "0x%llx\n", + (unsigned long long)userclk_freqcntrsts); +} +static DEVICE_ATTR_RO(userclk_freqcntrsts); + +static const struct attribute *port_hdr_userclk_attrs[] = { + &dev_attr_userclk_freqcmd.attr, + &dev_attr_userclk_freqcntrcmd.attr, + &dev_attr_userclk_freqsts.attr, + &dev_attr_userclk_freqcntrsts.attr, + NULL, +}; + static int port_hdr_init(struct platform_device *pdev, struct dfl_feature *feature) { + int ret; + dev_dbg(&pdev->dev, "PORT HDR Init.\n"); port_reset(pdev); - return sysfs_create_files(&pdev->dev.kobj, port_hdr_attrs); + ret = sysfs_create_files(&pdev->dev.kobj, port_hdr_attrs); + if (ret) + return ret; + + /* + * if revision > 0, the userclock will be moved from port hdr register + * region to a separated private feature. + */ + if (dfl_feature_revision(feature->ioaddr) > 0) + return 0; + + ret = sysfs_create_files(&pdev->dev.kobj, port_hdr_userclk_attrs); + if (ret) + sysfs_remove_files(&pdev->dev.kobj, port_hdr_attrs); + + return ret; } static void port_hdr_uinit(struct platform_device *pdev, @@ -300,6 +410,7 @@ static void port_hdr_uinit(struct platform_device *pdev, { dev_dbg(&pdev->dev, "PORT HDR UInit.\n"); + sysfs_remove_files(&pdev->dev.kobj, port_hdr_userclk_attrs); sysfs_remove_files(&pdev->dev.kobj, port_hdr_attrs); } diff --git a/drivers/fpga/dfl.h b/drivers/fpga/dfl.h index 1525098..3c5dc3a 100644 --- a/drivers/fpga/dfl.h +++ b/drivers/fpga/dfl.h @@ -120,6 +120,10 @@ #define PORT_HDR_CAP 0x30 #define PORT_HDR_CTRL 0x38 #define PORT_HDR_STS 0x40 +#define PORT_HDR_USRCLK_CMD0 0x50 +#define PORT_HDR_USRCLK_CMD1 0x58 +#define PORT_HDR_USRCLK_STS0 0x60 +#define PORT_HDR_USRCLK_STS1 0x68 /* Port Capability Register Bitfield */ #define PORT_CAP_PORT_NUM GENMASK_ULL(1, 0) /* ID of this port */ From patchwork Thu Jun 27 04:44:50 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Wu, Hao" X-Patchwork-Id: 11018745 X-Patchwork-Delegate: moritz.fischer@ettus.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id AE1FA17D2 for ; Thu, 27 Jun 2019 05:02:38 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9D5A2287CF for ; Thu, 27 Jun 2019 05:02:38 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9184728A18; Thu, 27 Jun 2019 05:02:38 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 027DB28A13 for ; Thu, 27 Jun 2019 05:02:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727385AbfF0FCL (ORCPT ); Thu, 27 Jun 2019 01:02:11 -0400 Received: from mga11.intel.com ([192.55.52.93]:22936 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727379AbfF0FCK (ORCPT ); Thu, 27 Jun 2019 01:02:10 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 26 Jun 2019 22:02:10 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.63,422,1557212400"; d="scan'208";a="173005102" Received: from hao-dev.bj.intel.com ([10.238.157.65]) by orsmga002.jf.intel.com with ESMTP; 26 Jun 2019 22:02:08 -0700 From: Wu Hao To: mdf@kernel.org, linux-fpga@vger.kernel.org, linux-kernel@vger.kernel.org Cc: linux-api@vger.kernel.org, yilun.xu@intel.com, hao.wu@intel.com, gregkh@linuxfoundation.org, atull@kernel.org Subject: [PATCH v4 10/15] fpga: dfl: add id_table for dfl private feature driver Date: Thu, 27 Jun 2019 12:44:50 +0800 Message-Id: <1561610695-5414-11-git-send-email-hao.wu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1561610695-5414-1-git-send-email-hao.wu@intel.com> References: <1561610695-5414-1-git-send-email-hao.wu@intel.com> Sender: linux-fpga-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fpga@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds id_table for each dfl private feature driver, it allows to reuse same private feature driver to match and support multiple dfl private features. Signed-off-by: Xu Yilun Signed-off-by: Wu Hao Acked-by: Moritz Fischer Acked-by: Alan Tull --- drivers/fpga/dfl-afu-main.c | 14 ++++++++++++-- drivers/fpga/dfl-fme-main.c | 11 ++++++++--- drivers/fpga/dfl-fme-pr.c | 7 ++++++- drivers/fpga/dfl-fme.h | 3 ++- drivers/fpga/dfl.c | 21 +++++++++++++++++++-- drivers/fpga/dfl.h | 21 +++++++++++++++------ 6 files changed, 62 insertions(+), 15 deletions(-) diff --git a/drivers/fpga/dfl-afu-main.c b/drivers/fpga/dfl-afu-main.c index 8b434a4..65b3e89 100644 --- a/drivers/fpga/dfl-afu-main.c +++ b/drivers/fpga/dfl-afu-main.c @@ -435,6 +435,11 @@ static void port_hdr_uinit(struct platform_device *pdev, return ret; } +static const struct dfl_feature_id port_hdr_id_table[] = { + {.id = PORT_FEATURE_ID_HEADER,}, + {0,} +}; + static const struct dfl_feature_ops port_hdr_ops = { .init = port_hdr_init, .uinit = port_hdr_uinit, @@ -495,6 +500,11 @@ static void port_afu_uinit(struct platform_device *pdev, sysfs_remove_files(&pdev->dev.kobj, port_afu_attrs); } +static const struct dfl_feature_id port_afu_id_table[] = { + {.id = PORT_FEATURE_ID_AFU,}, + {0,} +}; + static const struct dfl_feature_ops port_afu_ops = { .init = port_afu_init, .uinit = port_afu_uinit, @@ -502,11 +512,11 @@ static void port_afu_uinit(struct platform_device *pdev, static struct dfl_feature_driver port_feature_drvs[] = { { - .id = PORT_FEATURE_ID_HEADER, + .id_table = port_hdr_id_table, .ops = &port_hdr_ops, }, { - .id = PORT_FEATURE_ID_AFU, + .id_table = port_afu_id_table, .ops = &port_afu_ops, }, { diff --git a/drivers/fpga/dfl-fme-main.c b/drivers/fpga/dfl-fme-main.c index 8b2a337..38c6342 100644 --- a/drivers/fpga/dfl-fme-main.c +++ b/drivers/fpga/dfl-fme-main.c @@ -158,6 +158,11 @@ static long fme_hdr_ioctl(struct platform_device *pdev, return -ENODEV; } +static const struct dfl_feature_id fme_hdr_id_table[] = { + {.id = FME_FEATURE_ID_HEADER,}, + {0,} +}; + static const struct dfl_feature_ops fme_hdr_ops = { .init = fme_hdr_init, .uinit = fme_hdr_uinit, @@ -166,12 +171,12 @@ static long fme_hdr_ioctl(struct platform_device *pdev, static struct dfl_feature_driver fme_feature_drvs[] = { { - .id = FME_FEATURE_ID_HEADER, + .id_table = fme_hdr_id_table, .ops = &fme_hdr_ops, }, { - .id = FME_FEATURE_ID_PR_MGMT, - .ops = &pr_mgmt_ops, + .id_table = fme_pr_mgmt_id_table, + .ops = &fme_pr_mgmt_ops, }, { .ops = NULL, diff --git a/drivers/fpga/dfl-fme-pr.c b/drivers/fpga/dfl-fme-pr.c index cd94ba8..52f1745 100644 --- a/drivers/fpga/dfl-fme-pr.c +++ b/drivers/fpga/dfl-fme-pr.c @@ -483,7 +483,12 @@ static long fme_pr_ioctl(struct platform_device *pdev, return ret; } -const struct dfl_feature_ops pr_mgmt_ops = { +const struct dfl_feature_id fme_pr_mgmt_id_table[] = { + {.id = FME_FEATURE_ID_PR_MGMT,}, + {0} +}; + +const struct dfl_feature_ops fme_pr_mgmt_ops = { .init = pr_mgmt_init, .uinit = pr_mgmt_uinit, .ioctl = fme_pr_ioctl, diff --git a/drivers/fpga/dfl-fme.h b/drivers/fpga/dfl-fme.h index de20755..7a021c4 100644 --- a/drivers/fpga/dfl-fme.h +++ b/drivers/fpga/dfl-fme.h @@ -35,6 +35,7 @@ struct dfl_fme { struct dfl_feature_platform_data *pdata; }; -extern const struct dfl_feature_ops pr_mgmt_ops; +extern const struct dfl_feature_ops fme_pr_mgmt_ops; +extern const struct dfl_feature_id fme_pr_mgmt_id_table[]; #endif /* __DFL_FME_H */ diff --git a/drivers/fpga/dfl.c b/drivers/fpga/dfl.c index 28d61b6..1bb2b58 100644 --- a/drivers/fpga/dfl.c +++ b/drivers/fpga/dfl.c @@ -14,6 +14,8 @@ #include "dfl.h" +#define DRV_VERSION "0.8" + static DEFINE_MUTEX(dfl_id_mutex); /* @@ -281,6 +283,21 @@ static int dfl_feature_instance_init(struct platform_device *pdev, return ret; } +static bool dfl_feature_drv_match(struct dfl_feature *feature, + struct dfl_feature_driver *driver) +{ + const struct dfl_feature_id *ids = driver->id_table; + + if (ids) { + while (ids->id) { + if (ids->id == feature->id) + return true; + ids++; + } + } + return false; +} + /** * dfl_fpga_dev_feature_init - init for sub features of dfl feature device * @pdev: feature device. @@ -301,8 +318,7 @@ int dfl_fpga_dev_feature_init(struct platform_device *pdev, while (drv->ops) { dfl_fpga_dev_for_each_feature(pdata, feature) { - /* match feature and drv using id */ - if (feature->id == drv->id) { + if (dfl_feature_drv_match(feature, drv)) { ret = dfl_feature_instance_init(pdev, pdata, feature, drv); if (ret) @@ -1178,3 +1194,4 @@ static void __exit dfl_fpga_exit(void) MODULE_DESCRIPTION("FPGA Device Feature List (DFL) Support"); MODULE_AUTHOR("Intel Corporation"); MODULE_LICENSE("GPL v2"); +MODULE_VERSION(DRV_VERSION); diff --git a/drivers/fpga/dfl.h b/drivers/fpga/dfl.h index 3c5dc3a..fbc57f0 100644 --- a/drivers/fpga/dfl.h +++ b/drivers/fpga/dfl.h @@ -30,8 +30,8 @@ /* plus one for fme device */ #define MAX_DFL_FEATURE_DEV_NUM (MAX_DFL_FPGA_PORT_NUM + 1) -/* Reserved 0x0 for Header Group Register and 0xff for AFU */ -#define FEATURE_ID_FIU_HEADER 0x0 +/* Reserved 0xfe for Header Group Register and 0xff for AFU */ +#define FEATURE_ID_FIU_HEADER 0xfe #define FEATURE_ID_AFU 0xff #define FME_FEATURE_ID_HEADER FEATURE_ID_FIU_HEADER @@ -169,13 +169,22 @@ struct dfl_fpga_port_ops { int dfl_fpga_check_port_id(struct platform_device *pdev, void *pport_id); /** - * struct dfl_feature_driver - sub feature's driver + * struct dfl_feature_id - dfl private feature id * - * @id: sub feature id. - * @ops: ops of this sub feature. + * @id: unique dfl private feature id. */ -struct dfl_feature_driver { +struct dfl_feature_id { u64 id; +}; + +/** + * struct dfl_feature_driver - dfl private feature driver + * + * @id_table: id_table for dfl private features supported by this driver. + * @ops: ops of this dfl private feature driver. + */ +struct dfl_feature_driver { + const struct dfl_feature_id *id_table; const struct dfl_feature_ops *ops; }; From patchwork Thu Jun 27 04:44:51 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Wu, Hao" X-Patchwork-Id: 11018743 X-Patchwork-Delegate: moritz.fischer@ettus.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 5261B112C for ; Thu, 27 Jun 2019 05:02:38 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4484C287CF for ; Thu, 27 Jun 2019 05:02:38 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3924728A19; Thu, 27 Jun 2019 05:02:38 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CAC65287CF for ; Thu, 27 Jun 2019 05:02:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727146AbfF0FCe (ORCPT ); Thu, 27 Jun 2019 01:02:34 -0400 Received: from mga11.intel.com ([192.55.52.93]:22936 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727394AbfF0FCM (ORCPT ); Thu, 27 Jun 2019 01:02:12 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 26 Jun 2019 22:02:12 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.63,422,1557212400"; d="scan'208";a="173005117" Received: from hao-dev.bj.intel.com ([10.238.157.65]) by orsmga002.jf.intel.com with ESMTP; 26 Jun 2019 22:02:10 -0700 From: Wu Hao To: mdf@kernel.org, linux-fpga@vger.kernel.org, linux-kernel@vger.kernel.org Cc: linux-api@vger.kernel.org, yilun.xu@intel.com, hao.wu@intel.com, gregkh@linuxfoundation.org, atull@kernel.org Subject: [PATCH v4 11/15] fpga: dfl: afu: export __port_enable/disable function. Date: Thu, 27 Jun 2019 12:44:51 +0800 Message-Id: <1561610695-5414-12-git-send-email-hao.wu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1561610695-5414-1-git-send-email-hao.wu@intel.com> References: <1561610695-5414-1-git-send-email-hao.wu@intel.com> Sender: linux-fpga-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fpga@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP As these two functions are used by other private features. e.g. in error reporting private feature, it requires to check port status and reset port for error clearing. Signed-off-by: Xu Yilun Signed-off-by: Wu Hao Acked-by: Moritz Fischer Acked-by: Alan Tull --- drivers/fpga/dfl-afu-main.c | 25 ++++++++++++++----------- drivers/fpga/dfl-afu.h | 3 +++ 2 files changed, 17 insertions(+), 11 deletions(-) diff --git a/drivers/fpga/dfl-afu-main.c b/drivers/fpga/dfl-afu-main.c index 65b3e89..c8bc0b5 100644 --- a/drivers/fpga/dfl-afu-main.c +++ b/drivers/fpga/dfl-afu-main.c @@ -24,14 +24,16 @@ #define DRV_VERSION "0.8" /** - * port_enable - enable a port + * __port_enable - enable a port * @pdev: port platform device. * * Enable Port by clear the port soft reset bit, which is set by default. * The AFU is unable to respond to any MMIO access while in reset. - * port_enable function should only be used after port_disable function. + * __port_enable function should only be used after __port_disable function. + * + * The caller needs to hold lock for protection. */ -static void port_enable(struct platform_device *pdev) +void __port_enable(struct platform_device *pdev) { struct dfl_feature_platform_data *pdata = dev_get_platdata(&pdev->dev); void __iomem *base; @@ -54,13 +56,14 @@ static void port_enable(struct platform_device *pdev) #define RST_POLL_TIMEOUT 1000 /* us */ /** - * port_disable - disable a port + * __port_disable - disable a port * @pdev: port platform device. * - * Disable Port by setting the port soft reset bit, it puts the port into - * reset. + * Disable Port by setting the port soft reset bit, it puts the port into reset. + * + * The caller needs to hold lock for protection. */ -static int port_disable(struct platform_device *pdev) +int __port_disable(struct platform_device *pdev) { struct dfl_feature_platform_data *pdata = dev_get_platdata(&pdev->dev); void __iomem *base; @@ -106,9 +109,9 @@ static int __port_reset(struct platform_device *pdev) { int ret; - ret = port_disable(pdev); + ret = __port_disable(pdev); if (!ret) - port_enable(pdev); + __port_enable(pdev); return ret; } @@ -805,9 +808,9 @@ static int port_enable_set(struct platform_device *pdev, bool enable) mutex_lock(&pdata->lock); if (enable) - port_enable(pdev); + __port_enable(pdev); else - ret = port_disable(pdev); + ret = __port_disable(pdev); mutex_unlock(&pdata->lock); return ret; diff --git a/drivers/fpga/dfl-afu.h b/drivers/fpga/dfl-afu.h index 0c7630a..35e60c5 100644 --- a/drivers/fpga/dfl-afu.h +++ b/drivers/fpga/dfl-afu.h @@ -79,6 +79,9 @@ struct dfl_afu { struct dfl_feature_platform_data *pdata; }; +void __port_enable(struct platform_device *pdev); +int __port_disable(struct platform_device *pdev); + void afu_mmio_region_init(struct dfl_feature_platform_data *pdata); int afu_mmio_region_add(struct dfl_feature_platform_data *pdata, u32 region_index, u64 region_size, u64 phys, u32 flags); From patchwork Thu Jun 27 04:44:52 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Wu, Hao" X-Patchwork-Id: 11018741 X-Patchwork-Delegate: moritz.fischer@ettus.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8B8501398 for ; Thu, 27 Jun 2019 05:02:32 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7B570287CF for ; Thu, 27 Jun 2019 05:02:32 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6FCC228A18; Thu, 27 Jun 2019 05:02:32 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8C472287CF for ; Thu, 27 Jun 2019 05:02:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727379AbfF0FCP (ORCPT ); Thu, 27 Jun 2019 01:02:15 -0400 Received: from mga11.intel.com ([192.55.52.93]:22942 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727421AbfF0FCO (ORCPT ); Thu, 27 Jun 2019 01:02:14 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 26 Jun 2019 22:02:14 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.63,422,1557212400"; d="scan'208";a="173005131" Received: from hao-dev.bj.intel.com ([10.238.157.65]) by orsmga002.jf.intel.com with ESMTP; 26 Jun 2019 22:02:12 -0700 From: Wu Hao To: mdf@kernel.org, linux-fpga@vger.kernel.org, linux-kernel@vger.kernel.org Cc: linux-api@vger.kernel.org, yilun.xu@intel.com, hao.wu@intel.com, gregkh@linuxfoundation.org, atull@kernel.org Subject: [PATCH v4 12/15] fpga: dfl: afu: add error reporting support. Date: Thu, 27 Jun 2019 12:44:52 +0800 Message-Id: <1561610695-5414-13-git-send-email-hao.wu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1561610695-5414-1-git-send-email-hao.wu@intel.com> References: <1561610695-5414-1-git-send-email-hao.wu@intel.com> Sender: linux-fpga-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fpga@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Error reporting is one important private feature, it reports error detected on port and accelerated function unit (AFU). It introduces several sysfs interfaces to allow userspace to check and clear errors detected by hardware. Signed-off-by: Xu Yilun Signed-off-by: Wu Hao Acked-by: Alan Tull --- v2: add more error code description for error clear sysfs in doc. return -EINVAL instead of -EBUSY when input error code doesn't match in error clear sysfs. v3: replace scnprintf with sprintf in sysfs interfaces. update sysfs doc kernel version and date. v4: update sysfs doc date. --- Documentation/ABI/testing/sysfs-platform-dfl-port | 39 ++++ drivers/fpga/Makefile | 1 + drivers/fpga/dfl-afu-error.c | 225 ++++++++++++++++++++++ drivers/fpga/dfl-afu-main.c | 4 + drivers/fpga/dfl-afu.h | 4 + 5 files changed, 273 insertions(+) create mode 100644 drivers/fpga/dfl-afu-error.c diff --git a/Documentation/ABI/testing/sysfs-platform-dfl-port b/Documentation/ABI/testing/sysfs-platform-dfl-port index 04ea7f2..4aeca94 100644 --- a/Documentation/ABI/testing/sysfs-platform-dfl-port +++ b/Documentation/ABI/testing/sysfs-platform-dfl-port @@ -79,3 +79,42 @@ KernelVersion: 5.3 Contact: Wu Hao Description: Read-only. Read this file to get the status of issued command to userclck_freqcntrcmd. + +What: /sys/bus/platform/devices/dfl-port.0/errors/revision +Date: June 2019 +KernelVersion: 5.3 +Contact: Wu Hao +Description: Read-only. Read this file to get the revision of this error + reporting private feature. + +What: /sys/bus/platform/devices/dfl-port.0/errors/errors +Date: June 2019 +KernelVersion: 5.3 +Contact: Wu Hao +Description: Read-only. Read this file to get errors detected on port and + Accelerated Function Unit (AFU). + +What: /sys/bus/platform/devices/dfl-port.0/errors/first_error +Date: June 2019 +KernelVersion: 5.3 +Contact: Wu Hao +Description: Read-only. Read this file to get the first error detected by + hardware. + +What: /sys/bus/platform/devices/dfl-port.0/errors/first_malformed_req +Date: June 2019 +KernelVersion: 5.3 +Contact: Wu Hao +Description: Read-only. Read this file to get the first malformed request + captured by hardware. + +What: /sys/bus/platform/devices/dfl-port.0/errors/clear +Date: June 2019 +KernelVersion: 5.3 +Contact: Wu Hao +Description: Write-only. Write error code to this file to clear errors. + Write fails with -EINVAL if input parsing fails or input error + code doesn't match. + Write fails with -EBUSY or -ETIMEDOUT if error can't be cleared + as hardware is in low power state (-EBUSY) or not responding + (-ETIMEDOUT). diff --git a/drivers/fpga/Makefile b/drivers/fpga/Makefile index 312b937..7255891 100644 --- a/drivers/fpga/Makefile +++ b/drivers/fpga/Makefile @@ -41,6 +41,7 @@ obj-$(CONFIG_FPGA_DFL_AFU) += dfl-afu.o dfl-fme-objs := dfl-fme-main.o dfl-fme-pr.o dfl-afu-objs := dfl-afu-main.o dfl-afu-region.o dfl-afu-dma-region.o +dfl-afu-objs += dfl-afu-error.o # Drivers for FPGAs which implement DFL obj-$(CONFIG_FPGA_DFL_PCI) += dfl-pci.o diff --git a/drivers/fpga/dfl-afu-error.c b/drivers/fpga/dfl-afu-error.c new file mode 100644 index 0000000..f20dbdf --- /dev/null +++ b/drivers/fpga/dfl-afu-error.c @@ -0,0 +1,225 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Driver for FPGA Accelerated Function Unit (AFU) Error Reporting + * + * Copyright 2019 Intel Corporation, Inc. + * + * Authors: + * Wu Hao + * Xiao Guangrong + * Joseph Grecco + * Enno Luebbers + * Tim Whisonant + * Ananda Ravuri + * Mitchel Henry + */ + +#include + +#include "dfl-afu.h" + +#define PORT_ERROR_MASK 0x8 +#define PORT_ERROR 0x10 +#define PORT_FIRST_ERROR 0x18 +#define PORT_MALFORMED_REQ0 0x20 +#define PORT_MALFORMED_REQ1 0x28 + +#define ERROR_MASK GENMASK_ULL(63, 0) + +/* mask or unmask port errors by the error mask register. */ +static void __port_err_mask(struct device *dev, bool mask) +{ + void __iomem *base; + + base = dfl_get_feature_ioaddr_by_id(dev, PORT_FEATURE_ID_ERROR); + + writeq(mask ? ERROR_MASK : 0, base + PORT_ERROR_MASK); +} + +/* clear port errors. */ +static int __port_err_clear(struct device *dev, u64 err) +{ + struct platform_device *pdev = to_platform_device(dev); + void __iomem *base_err, *base_hdr; + int ret; + u64 v; + + base_err = dfl_get_feature_ioaddr_by_id(dev, PORT_FEATURE_ID_ERROR); + base_hdr = dfl_get_feature_ioaddr_by_id(dev, PORT_FEATURE_ID_HEADER); + + /* + * clear Port Errors + * + * - Check for AP6 State + * - Halt Port by keeping Port in reset + * - Set PORT Error mask to all 1 to mask errors + * - Clear all errors + * - Set Port mask to all 0 to enable errors + * - All errors start capturing new errors + * - Enable Port by pulling the port out of reset + */ + + /* if device is still in AP6 power state, can not clear any error. */ + v = readq(base_hdr + PORT_HDR_STS); + if (FIELD_GET(PORT_STS_PWR_STATE, v) == PORT_STS_PWR_STATE_AP6) { + dev_err(dev, "Could not clear errors, device in AP6 state.\n"); + return -EBUSY; + } + + /* Halt Port by keeping Port in reset */ + ret = __port_disable(pdev); + if (ret) + return ret; + + /* Mask all errors */ + __port_err_mask(dev, true); + + /* Clear errors if err input matches with current port errors.*/ + v = readq(base_err + PORT_ERROR); + + if (v == err) { + writeq(v, base_err + PORT_ERROR); + + v = readq(base_err + PORT_FIRST_ERROR); + writeq(v, base_err + PORT_FIRST_ERROR); + } else { + ret = -EINVAL; + } + + /* Clear mask */ + __port_err_mask(dev, false); + + /* Enable the Port by clear the reset */ + __port_enable(pdev); + + return ret; +} + +static ssize_t revision_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + void __iomem *base; + + base = dfl_get_feature_ioaddr_by_id(dev, PORT_FEATURE_ID_ERROR); + + return sprintf(buf, "%u\n", dfl_feature_revision(base)); +} +static DEVICE_ATTR_RO(revision); + +static ssize_t errors_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct dfl_feature_platform_data *pdata = dev_get_platdata(dev); + void __iomem *base; + u64 error; + + base = dfl_get_feature_ioaddr_by_id(dev, PORT_FEATURE_ID_ERROR); + + mutex_lock(&pdata->lock); + error = readq(base + PORT_ERROR); + mutex_unlock(&pdata->lock); + + return sprintf(buf, "0x%llx\n", (unsigned long long)error); +} +static DEVICE_ATTR_RO(errors); + +static ssize_t first_error_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct dfl_feature_platform_data *pdata = dev_get_platdata(dev); + void __iomem *base; + u64 error; + + base = dfl_get_feature_ioaddr_by_id(dev, PORT_FEATURE_ID_ERROR); + + mutex_lock(&pdata->lock); + error = readq(base + PORT_FIRST_ERROR); + mutex_unlock(&pdata->lock); + + return sprintf(buf, "0x%llx\n", (unsigned long long)error); +} +static DEVICE_ATTR_RO(first_error); + +static ssize_t first_malformed_req_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct dfl_feature_platform_data *pdata = dev_get_platdata(dev); + void __iomem *base; + u64 req0, req1; + + base = dfl_get_feature_ioaddr_by_id(dev, PORT_FEATURE_ID_ERROR); + + mutex_lock(&pdata->lock); + req0 = readq(base + PORT_MALFORMED_REQ0); + req1 = readq(base + PORT_MALFORMED_REQ1); + mutex_unlock(&pdata->lock); + + return sprintf(buf, "0x%016llx%016llx\n", + (unsigned long long)req1, (unsigned long long)req0); +} +static DEVICE_ATTR_RO(first_malformed_req); + +static ssize_t clear_store(struct device *dev, struct device_attribute *attr, + const char *buff, size_t count) +{ + struct dfl_feature_platform_data *pdata = dev_get_platdata(dev); + u64 value; + int ret; + + if (kstrtou64(buff, 0, &value)) + return -EINVAL; + + mutex_lock(&pdata->lock); + ret = __port_err_clear(dev, value); + mutex_unlock(&pdata->lock); + + return ret ? ret : count; +} +static DEVICE_ATTR_WO(clear); + +static struct attribute *port_err_attrs[] = { + &dev_attr_revision.attr, + &dev_attr_errors.attr, + &dev_attr_first_error.attr, + &dev_attr_first_malformed_req.attr, + &dev_attr_clear.attr, + NULL, +}; + +static struct attribute_group port_err_attr_group = { + .attrs = port_err_attrs, + .name = "errors", +}; + +static int port_err_init(struct platform_device *pdev, + struct dfl_feature *feature) +{ + struct dfl_feature_platform_data *pdata = dev_get_platdata(&pdev->dev); + + dev_dbg(&pdev->dev, "PORT ERR Init.\n"); + + mutex_lock(&pdata->lock); + __port_err_mask(&pdev->dev, false); + mutex_unlock(&pdata->lock); + + return sysfs_create_group(&pdev->dev.kobj, &port_err_attr_group); +} + +static void port_err_uinit(struct platform_device *pdev, + struct dfl_feature *feature) +{ + dev_dbg(&pdev->dev, "PORT ERR UInit.\n"); + + sysfs_remove_group(&pdev->dev.kobj, &port_err_attr_group); +} + +const struct dfl_feature_id port_err_id_table[] = { + {.id = PORT_FEATURE_ID_ERROR,}, + {0,} +}; + +const struct dfl_feature_ops port_err_ops = { + .init = port_err_init, + .uinit = port_err_uinit, +}; diff --git a/drivers/fpga/dfl-afu-main.c b/drivers/fpga/dfl-afu-main.c index c8bc0b5..bcf6e28 100644 --- a/drivers/fpga/dfl-afu-main.c +++ b/drivers/fpga/dfl-afu-main.c @@ -523,6 +523,10 @@ static void port_afu_uinit(struct platform_device *pdev, .ops = &port_afu_ops, }, { + .id_table = port_err_id_table, + .ops = &port_err_ops, + }, + { .ops = NULL, } }; diff --git a/drivers/fpga/dfl-afu.h b/drivers/fpga/dfl-afu.h index 35e60c5..c3182a2 100644 --- a/drivers/fpga/dfl-afu.h +++ b/drivers/fpga/dfl-afu.h @@ -100,4 +100,8 @@ int afu_dma_map_region(struct dfl_feature_platform_data *pdata, struct dfl_afu_dma_region * afu_dma_region_find(struct dfl_feature_platform_data *pdata, u64 iova, u64 size); + +extern const struct dfl_feature_ops port_err_ops; +extern const struct dfl_feature_id port_err_id_table[]; + #endif /* __DFL_AFU_H */ From patchwork Thu Jun 27 04:44:53 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Wu, Hao" X-Patchwork-Id: 11018739 X-Patchwork-Delegate: moritz.fischer@ettus.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id CEC221398 for ; Thu, 27 Jun 2019 05:02:30 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BEC3B287CF for ; Thu, 27 Jun 2019 05:02:30 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B2CBD28A16; Thu, 27 Jun 2019 05:02:30 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 60D5B287CF for ; Thu, 27 Jun 2019 05:02:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727444AbfF0FCR (ORCPT ); Thu, 27 Jun 2019 01:02:17 -0400 Received: from mga11.intel.com ([192.55.52.93]:22943 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727436AbfF0FCQ (ORCPT ); Thu, 27 Jun 2019 01:02:16 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 26 Jun 2019 22:02:16 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.63,422,1557212400"; d="scan'208";a="173005152" Received: from hao-dev.bj.intel.com ([10.238.157.65]) by orsmga002.jf.intel.com with ESMTP; 26 Jun 2019 22:02:14 -0700 From: Wu Hao To: mdf@kernel.org, linux-fpga@vger.kernel.org, linux-kernel@vger.kernel.org Cc: linux-api@vger.kernel.org, yilun.xu@intel.com, hao.wu@intel.com, gregkh@linuxfoundation.org, atull@kernel.org Subject: [PATCH v4 13/15] fpga: dfl: afu: add STP (SignalTap) support Date: Thu, 27 Jun 2019 12:44:53 +0800 Message-Id: <1561610695-5414-14-git-send-email-hao.wu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1561610695-5414-1-git-send-email-hao.wu@intel.com> References: <1561610695-5414-1-git-send-email-hao.wu@intel.com> Sender: linux-fpga-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fpga@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP STP (SignalTap) is one of the private features under the port for debugging. This patch adds private feature driver support for it to allow userspace applications to mmap related mmio region and provide STP service. Signed-off-by: Xu Yilun Signed-off-by: Wu Hao Acked-by: Moritz Fischer Acked-by: Alan Tull --- drivers/fpga/dfl-afu-main.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/drivers/fpga/dfl-afu-main.c b/drivers/fpga/dfl-afu-main.c index bcf6e28..8241ace 100644 --- a/drivers/fpga/dfl-afu-main.c +++ b/drivers/fpga/dfl-afu-main.c @@ -513,6 +513,36 @@ static void port_afu_uinit(struct platform_device *pdev, .uinit = port_afu_uinit, }; +static int port_stp_init(struct platform_device *pdev, + struct dfl_feature *feature) +{ + struct resource *res = &pdev->resource[feature->resource_index]; + + dev_dbg(&pdev->dev, "PORT STP Init.\n"); + + return afu_mmio_region_add(dev_get_platdata(&pdev->dev), + DFL_PORT_REGION_INDEX_STP, + resource_size(res), res->start, + DFL_PORT_REGION_MMAP | DFL_PORT_REGION_READ | + DFL_PORT_REGION_WRITE); +} + +static void port_stp_uinit(struct platform_device *pdev, + struct dfl_feature *feature) +{ + dev_dbg(&pdev->dev, "PORT STP UInit.\n"); +} + +static const struct dfl_feature_id port_stp_id_table[] = { + {.id = PORT_FEATURE_ID_STP,}, + {0,} +}; + +static const struct dfl_feature_ops port_stp_ops = { + .init = port_stp_init, + .uinit = port_stp_uinit, +}; + static struct dfl_feature_driver port_feature_drvs[] = { { .id_table = port_hdr_id_table, @@ -527,6 +557,10 @@ static void port_afu_uinit(struct platform_device *pdev, .ops = &port_err_ops, }, { + .id_table = port_stp_id_table, + .ops = &port_stp_ops, + }, + { .ops = NULL, } }; From patchwork Thu Jun 27 04:44:54 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Wu, Hao" X-Patchwork-Id: 11018735 X-Patchwork-Delegate: moritz.fischer@ettus.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 23683112C for ; Thu, 27 Jun 2019 05:02:20 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 13687287CF for ; Thu, 27 Jun 2019 05:02:20 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 07A8F28A16; Thu, 27 Jun 2019 05:02:20 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 92A41287CF for ; Thu, 27 Jun 2019 05:02:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727464AbfF0FCS (ORCPT ); Thu, 27 Jun 2019 01:02:18 -0400 Received: from mga11.intel.com ([192.55.52.93]:22943 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727460AbfF0FCS (ORCPT ); Thu, 27 Jun 2019 01:02:18 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 26 Jun 2019 22:02:18 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.63,422,1557212400"; d="scan'208";a="173005168" Received: from hao-dev.bj.intel.com ([10.238.157.65]) by orsmga002.jf.intel.com with ESMTP; 26 Jun 2019 22:02:16 -0700 From: Wu Hao To: mdf@kernel.org, linux-fpga@vger.kernel.org, linux-kernel@vger.kernel.org Cc: linux-api@vger.kernel.org, yilun.xu@intel.com, hao.wu@intel.com, gregkh@linuxfoundation.org, atull@kernel.org, Luwei Kang Subject: [PATCH v4 14/15] fpga: dfl: fme: add capability sysfs interfaces Date: Thu, 27 Jun 2019 12:44:54 +0800 Message-Id: <1561610695-5414-15-git-send-email-hao.wu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1561610695-5414-1-git-send-email-hao.wu@intel.com> References: <1561610695-5414-1-git-send-email-hao.wu@intel.com> Sender: linux-fpga-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fpga@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds 3 read-only sysfs interfaces for FPGA Management Engine (FME) block for capabilities including cache_size, fabric_version and socket_id. Signed-off-by: Luwei Kang Signed-off-by: Xu Yilun Signed-off-by: Wu Hao Acked-by: Alan Tull --- v3: replace scnprintf with sprintf in sysfs interfaces. update sysfs doc kernel version and date. v4: update sysfs doc date. --- Documentation/ABI/testing/sysfs-platform-dfl-fme | 23 ++++++++++++ drivers/fpga/dfl-fme-main.c | 48 ++++++++++++++++++++++++ 2 files changed, 71 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-platform-dfl-fme b/Documentation/ABI/testing/sysfs-platform-dfl-fme index 8fa4feb..99cd3b2 100644 --- a/Documentation/ABI/testing/sysfs-platform-dfl-fme +++ b/Documentation/ABI/testing/sysfs-platform-dfl-fme @@ -21,3 +21,26 @@ Contact: Wu Hao Description: Read-only. It returns Bitstream (static FPGA region) meta data, which includes the synthesis date, seed and other information of this static FPGA region. + +What: /sys/bus/platform/devices/dfl-fme.0/cache_size +Date: June 2019 +KernelVersion: 5.3 +Contact: Wu Hao +Description: Read-only. It returns cache size of this FPGA device. + +What: /sys/bus/platform/devices/dfl-fme.0/fabric_version +Date: June 2019 +KernelVersion: 5.3 +Contact: Wu Hao +Description: Read-only. It returns fabric version of this FPGA device. + Userspace applications need this information to select + best data channels per different fabric design. + +What: /sys/bus/platform/devices/dfl-fme.0/socket_id +Date: June 2019 +KernelVersion: 5.3 +Contact: Wu Hao +Description: Read-only. It returns socket_id to indicate which socket + this FPGA belongs to, only valid for integrated solution. + User only needs this information, in case standard numa node + can't provide correct information. diff --git a/drivers/fpga/dfl-fme-main.c b/drivers/fpga/dfl-fme-main.c index 38c6342..2d69b8f 100644 --- a/drivers/fpga/dfl-fme-main.c +++ b/drivers/fpga/dfl-fme-main.c @@ -75,10 +75,58 @@ static ssize_t bitstream_metadata_show(struct device *dev, } static DEVICE_ATTR_RO(bitstream_metadata); +static ssize_t cache_size_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + void __iomem *base; + u64 v; + + base = dfl_get_feature_ioaddr_by_id(dev, FME_FEATURE_ID_HEADER); + + v = readq(base + FME_HDR_CAP); + + return sprintf(buf, "%u\n", + (unsigned int)FIELD_GET(FME_CAP_CACHE_SIZE, v)); +} +static DEVICE_ATTR_RO(cache_size); + +static ssize_t fabric_version_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + void __iomem *base; + u64 v; + + base = dfl_get_feature_ioaddr_by_id(dev, FME_FEATURE_ID_HEADER); + + v = readq(base + FME_HDR_CAP); + + return sprintf(buf, "%u\n", + (unsigned int)FIELD_GET(FME_CAP_FABRIC_VERID, v)); +} +static DEVICE_ATTR_RO(fabric_version); + +static ssize_t socket_id_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + void __iomem *base; + u64 v; + + base = dfl_get_feature_ioaddr_by_id(dev, FME_FEATURE_ID_HEADER); + + v = readq(base + FME_HDR_CAP); + + return sprintf(buf, "%u\n", + (unsigned int)FIELD_GET(FME_CAP_SOCKET_ID, v)); +} +static DEVICE_ATTR_RO(socket_id); + static const struct attribute *fme_hdr_attrs[] = { &dev_attr_ports_num.attr, &dev_attr_bitstream_id.attr, &dev_attr_bitstream_metadata.attr, + &dev_attr_cache_size.attr, + &dev_attr_fabric_version.attr, + &dev_attr_socket_id.attr, NULL, }; From patchwork Thu Jun 27 04:44:55 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Wu, Hao" X-Patchwork-Id: 11018737 X-Patchwork-Delegate: moritz.fischer@ettus.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B12A8112C for ; Thu, 27 Jun 2019 05:02:27 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A0ACB287CF for ; Thu, 27 Jun 2019 05:02:27 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9444028A16; Thu, 27 Jun 2019 05:02:27 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6EF4F287CF for ; Thu, 27 Jun 2019 05:02:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727483AbfF0FCW (ORCPT ); Thu, 27 Jun 2019 01:02:22 -0400 Received: from mga11.intel.com ([192.55.52.93]:22943 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727460AbfF0FCW (ORCPT ); Thu, 27 Jun 2019 01:02:22 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 26 Jun 2019 22:02:20 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.63,422,1557212400"; d="scan'208";a="173005196" Received: from hao-dev.bj.intel.com ([10.238.157.65]) by orsmga002.jf.intel.com with ESMTP; 26 Jun 2019 22:02:18 -0700 From: Wu Hao To: mdf@kernel.org, linux-fpga@vger.kernel.org, linux-kernel@vger.kernel.org Cc: linux-api@vger.kernel.org, yilun.xu@intel.com, hao.wu@intel.com, gregkh@linuxfoundation.org, atull@kernel.org, Luwei Kang , Ananda Ravuri Subject: [PATCH v4 15/15] fpga: dfl: fme: add global error reporting support Date: Thu, 27 Jun 2019 12:44:55 +0800 Message-Id: <1561610695-5414-16-git-send-email-hao.wu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1561610695-5414-1-git-send-email-hao.wu@intel.com> References: <1561610695-5414-1-git-send-email-hao.wu@intel.com> Sender: linux-fpga-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fpga@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds support for global error reporting for FPGA Management Engine (FME), it introduces sysfs interfaces to report different error detected by the hardware, and allow user to clear errors or inject error for testing purpose. Signed-off-by: Luwei Kang Signed-off-by: Ananda Ravuri Signed-off-by: Xu Yilun Signed-off-by: Wu Hao Acked-by: Alan Tull --- v2: fix issues found in sysfs doc. fix returned error code issues for writable sysfs interfaces. (use -EINVAL if input doesn't match error code) reorder the sysfs groups in code. v3: code rebase. replace scnprintf with sprintf in sysfs interfaces. update sysfs doc kernel version and date. v4: update sysfs doc date. --- Documentation/ABI/testing/sysfs-platform-dfl-fme | 75 +++++ drivers/fpga/Makefile | 2 +- drivers/fpga/dfl-fme-error.c | 385 +++++++++++++++++++++++ drivers/fpga/dfl-fme-main.c | 4 + drivers/fpga/dfl-fme.h | 2 + drivers/fpga/dfl.h | 2 + 6 files changed, 469 insertions(+), 1 deletion(-) create mode 100644 drivers/fpga/dfl-fme-error.c diff --git a/Documentation/ABI/testing/sysfs-platform-dfl-fme b/Documentation/ABI/testing/sysfs-platform-dfl-fme index 99cd3b2..86eef83 100644 --- a/Documentation/ABI/testing/sysfs-platform-dfl-fme +++ b/Documentation/ABI/testing/sysfs-platform-dfl-fme @@ -44,3 +44,78 @@ Description: Read-only. It returns socket_id to indicate which socket this FPGA belongs to, only valid for integrated solution. User only needs this information, in case standard numa node can't provide correct information. + +What: /sys/bus/platform/devices/dfl-fme.0/errors/revision +Date: June 2019 +KernelVersion: 5.3 +Contact: Wu Hao +Description: Read-only. Read this file to get the revision of this global + error reporting private feature. + +What: /sys/bus/platform/devices/dfl-fme.0/errors/pcie0_errors +Date: June 2019 +KernelVersion: 5.3 +Contact: Wu Hao +Description: Read-Write. Read this file for errors detected on pcie0 link. + Write this file to clear errors logged in pcie0_errors. Write + fails with -EINVAL if input parsing fails or input error code + doesn't match. + +What: /sys/bus/platform/devices/dfl-fme.0/errors/pcie1_errors +Date: June 2019 +KernelVersion: 5.3 +Contact: Wu Hao +Description: Read-Write. Read this file for errors detected on pcie1 link. + Write this file to clear errors logged in pcie1_errors. Write + fails with -EINVAL if input parsing fails or input error code + doesn't match. + +What: /sys/bus/platform/devices/dfl-fme.0/errors/nonfatal_errors +Date: June 2019 +KernelVersion: 5.3 +Contact: Wu Hao +Description: Read-only. It returns non-fatal errors detected. + +What: /sys/bus/platform/devices/dfl-fme.0/errors/catfatal_errors +Date: June 2019 +KernelVersion: 5.3 +Contact: Wu Hao +Description: Read-only. It returns catastrophic and fatal errors detected. + +What: /sys/bus/platform/devices/dfl-fme.0/errors/inject_error +Date: June 2019 +KernelVersion: 5.3 +Contact: Wu Hao +Description: Read-Write. Read this file to check errors injected. Write this + file to inject errors for testing purpose. Write fails with + -EINVAL if input parsing fails or input inject error code isn't + supported. + +What: /sys/bus/platform/devices/dfl-fme.0/errors/fme-errors/errors +Date: June 2019 +KernelVersion: 5.3 +Contact: Wu Hao +Description: Read-only. Read this file to get errors detected by hardware. + +What: /sys/bus/platform/devices/dfl-fme.0/errors/fme-errors/first_error +Date: June 2019 +KernelVersion: 5.3 +Contact: Wu Hao +Description: Read-only. Read this file to get the first error detected by + hardware. + +What: /sys/bus/platform/devices/dfl-fme.0/errors/fme-errors/next_error +Date: June 2019 +KernelVersion: 5.3 +Contact: Wu Hao +Description: Read-only. Read this file to get the second error detected by + hardware. + +What: /sys/bus/platform/devices/dfl-fme.0/errors/fme-errors/clear +Date: June 2019 +KernelVersion: 5.3 +Contact: Wu Hao +Description: Write-only. Write error code to this file to clear all errors + logged in errors, first_error and next_error. Write fails with + -EINVAL if input parsing fails or input error code doesn't + match. diff --git a/drivers/fpga/Makefile b/drivers/fpga/Makefile index 7255891..4865b74 100644 --- a/drivers/fpga/Makefile +++ b/drivers/fpga/Makefile @@ -39,7 +39,7 @@ obj-$(CONFIG_FPGA_DFL_FME_BRIDGE) += dfl-fme-br.o obj-$(CONFIG_FPGA_DFL_FME_REGION) += dfl-fme-region.o obj-$(CONFIG_FPGA_DFL_AFU) += dfl-afu.o -dfl-fme-objs := dfl-fme-main.o dfl-fme-pr.o +dfl-fme-objs := dfl-fme-main.o dfl-fme-pr.o dfl-fme-error.o dfl-afu-objs := dfl-afu-main.o dfl-afu-region.o dfl-afu-dma-region.o dfl-afu-objs += dfl-afu-error.o diff --git a/drivers/fpga/dfl-fme-error.c b/drivers/fpga/dfl-fme-error.c new file mode 100644 index 0000000..cdea108 --- /dev/null +++ b/drivers/fpga/dfl-fme-error.c @@ -0,0 +1,385 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Driver for FPGA Management Engine Error Management + * + * Copyright 2019 Intel Corporation, Inc. + * + * Authors: + * Kang Luwei + * Xiao Guangrong + * Wu Hao + * Joseph Grecco + * Enno Luebbers + * Tim Whisonant + * Ananda Ravuri + * Mitchel, Henry + */ + +#include + +#include "dfl.h" +#include "dfl-fme.h" + +#define FME_ERROR_MASK 0x8 +#define FME_ERROR 0x10 +#define MBP_ERROR BIT_ULL(6) +#define PCIE0_ERROR_MASK 0x18 +#define PCIE0_ERROR 0x20 +#define PCIE1_ERROR_MASK 0x28 +#define PCIE1_ERROR 0x30 +#define FME_FIRST_ERROR 0x38 +#define FME_NEXT_ERROR 0x40 +#define RAS_NONFAT_ERROR_MASK 0x48 +#define RAS_NONFAT_ERROR 0x50 +#define RAS_CATFAT_ERROR_MASK 0x58 +#define RAS_CATFAT_ERROR 0x60 +#define RAS_ERROR_INJECT 0x68 +#define INJECT_ERROR_MASK GENMASK_ULL(2, 0) + +static ssize_t revision_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct device *err_dev = dev->parent; + void __iomem *base; + + base = dfl_get_feature_ioaddr_by_id(err_dev, FME_FEATURE_ID_GLOBAL_ERR); + + return sprintf(buf, "%u\n", dfl_feature_revision(base)); +} +static DEVICE_ATTR_RO(revision); + +static ssize_t pcie0_errors_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct device *err_dev = dev->parent; + void __iomem *base; + + base = dfl_get_feature_ioaddr_by_id(err_dev, FME_FEATURE_ID_GLOBAL_ERR); + + return sprintf(buf, "0x%llx\n", + (unsigned long long)readq(base + PCIE0_ERROR)); +} + +static ssize_t pcie0_errors_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct dfl_feature_platform_data *pdata = dev_get_platdata(dev->parent); + struct device *err_dev = dev->parent; + void __iomem *base; + int ret = 0; + u64 v, val; + + if (kstrtou64(buf, 0, &val)) + return -EINVAL; + + base = dfl_get_feature_ioaddr_by_id(err_dev, FME_FEATURE_ID_GLOBAL_ERR); + + mutex_lock(&pdata->lock); + writeq(GENMASK_ULL(63, 0), base + PCIE0_ERROR_MASK); + + v = readq(base + PCIE0_ERROR); + if (val == v) + writeq(v, base + PCIE0_ERROR); + else + ret = -EINVAL; + + writeq(0ULL, base + PCIE0_ERROR_MASK); + mutex_unlock(&pdata->lock); + return ret ? ret : count; +} +static DEVICE_ATTR_RW(pcie0_errors); + +static ssize_t pcie1_errors_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct device *err_dev = dev->parent; + void __iomem *base; + + base = dfl_get_feature_ioaddr_by_id(err_dev, FME_FEATURE_ID_GLOBAL_ERR); + + return sprintf(buf, "0x%llx\n", + (unsigned long long)readq(base + PCIE1_ERROR)); +} + +static ssize_t pcie1_errors_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct dfl_feature_platform_data *pdata = dev_get_platdata(dev->parent); + struct device *err_dev = dev->parent; + void __iomem *base; + int ret = 0; + u64 v, val; + + if (kstrtou64(buf, 0, &val)) + return -EINVAL; + + base = dfl_get_feature_ioaddr_by_id(err_dev, FME_FEATURE_ID_GLOBAL_ERR); + + mutex_lock(&pdata->lock); + writeq(GENMASK_ULL(63, 0), base + PCIE1_ERROR_MASK); + + v = readq(base + PCIE1_ERROR); + if (val == v) + writeq(v, base + PCIE1_ERROR); + else + ret = -EINVAL; + + writeq(0ULL, base + PCIE1_ERROR_MASK); + mutex_unlock(&pdata->lock); + return ret ? ret : count; +} +static DEVICE_ATTR_RW(pcie1_errors); + +static ssize_t nonfatal_errors_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct device *err_dev = dev->parent; + void __iomem *base; + + base = dfl_get_feature_ioaddr_by_id(err_dev, FME_FEATURE_ID_GLOBAL_ERR); + + return sprintf(buf, "0x%llx\n", + (unsigned long long)readq(base + RAS_NONFAT_ERROR)); +} +static DEVICE_ATTR_RO(nonfatal_errors); + +static ssize_t catfatal_errors_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct device *err_dev = dev->parent; + void __iomem *base; + + base = dfl_get_feature_ioaddr_by_id(err_dev, FME_FEATURE_ID_GLOBAL_ERR); + + return sprintf(buf, "0x%llx\n", + (unsigned long long)readq(base + RAS_CATFAT_ERROR)); +} +static DEVICE_ATTR_RO(catfatal_errors); + +static ssize_t inject_error_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct device *err_dev = dev->parent; + void __iomem *base; + u64 v; + + base = dfl_get_feature_ioaddr_by_id(err_dev, FME_FEATURE_ID_GLOBAL_ERR); + + v = readq(base + RAS_ERROR_INJECT); + + return sprintf(buf, "0x%llx\n", + (unsigned long long)FIELD_GET(INJECT_ERROR_MASK, v)); +} + +static ssize_t inject_error_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct dfl_feature_platform_data *pdata = dev_get_platdata(dev->parent); + struct device *err_dev = dev->parent; + void __iomem *base; + u8 inject_error; + u64 v; + + if (kstrtou8(buf, 0, &inject_error)) + return -EINVAL; + + if (inject_error & ~INJECT_ERROR_MASK) + return -EINVAL; + + base = dfl_get_feature_ioaddr_by_id(err_dev, FME_FEATURE_ID_GLOBAL_ERR); + + mutex_lock(&pdata->lock); + v = readq(base + RAS_ERROR_INJECT); + v &= ~INJECT_ERROR_MASK; + v |= FIELD_PREP(INJECT_ERROR_MASK, inject_error); + writeq(v, base + RAS_ERROR_INJECT); + mutex_unlock(&pdata->lock); + + return count; +} +static DEVICE_ATTR_RW(inject_error); + +static struct attribute *errors_attrs[] = { + &dev_attr_revision.attr, + &dev_attr_pcie0_errors.attr, + &dev_attr_pcie1_errors.attr, + &dev_attr_nonfatal_errors.attr, + &dev_attr_catfatal_errors.attr, + &dev_attr_inject_error.attr, + NULL, +}; + +static struct attribute_group errors_attr_group = { + .attrs = errors_attrs, +}; + +static ssize_t errors_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct device *err_dev = dev->parent; + void __iomem *base; + + base = dfl_get_feature_ioaddr_by_id(err_dev, FME_FEATURE_ID_GLOBAL_ERR); + + return sprintf(buf, "0x%llx\n", + (unsigned long long)readq(base + FME_ERROR)); +} +static DEVICE_ATTR_RO(errors); + +static ssize_t first_error_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct device *err_dev = dev->parent; + void __iomem *base; + + base = dfl_get_feature_ioaddr_by_id(err_dev, FME_FEATURE_ID_GLOBAL_ERR); + + return sprintf(buf, "0x%llx\n", + (unsigned long long)readq(base + FME_FIRST_ERROR)); +} +static DEVICE_ATTR_RO(first_error); + +static ssize_t next_error_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct device *err_dev = dev->parent; + void __iomem *base; + + base = dfl_get_feature_ioaddr_by_id(err_dev, FME_FEATURE_ID_GLOBAL_ERR); + + return sprintf(buf, "0x%llx\n", + (unsigned long long)readq(base + FME_NEXT_ERROR)); +} +static DEVICE_ATTR_RO(next_error); + +static ssize_t clear_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct dfl_feature_platform_data *pdata = dev_get_platdata(dev->parent); + struct device *err_dev = dev->parent; + void __iomem *base; + u64 v, val; + int ret = 0; + + if (kstrtou64(buf, 0, &val)) + return -EINVAL; + + base = dfl_get_feature_ioaddr_by_id(err_dev, FME_FEATURE_ID_GLOBAL_ERR); + + mutex_lock(&pdata->lock); + writeq(GENMASK_ULL(63, 0), base + FME_ERROR_MASK); + + v = readq(base + FME_ERROR); + if (val == v) { + writeq(v, base + FME_ERROR); + v = readq(base + FME_FIRST_ERROR); + writeq(v, base + FME_FIRST_ERROR); + v = readq(base + FME_NEXT_ERROR); + writeq(v, base + FME_NEXT_ERROR); + } else { + ret = -EINVAL; + } + + /* Workaround: disable MBP_ERROR if feature revision is 0 */ + writeq(dfl_feature_revision(base) ? 0ULL : MBP_ERROR, + base + FME_ERROR_MASK); + mutex_unlock(&pdata->lock); + return ret ? ret : count; +} +static DEVICE_ATTR_WO(clear); + +static struct attribute *fme_errors_attrs[] = { + &dev_attr_errors.attr, + &dev_attr_first_error.attr, + &dev_attr_next_error.attr, + &dev_attr_clear.attr, + NULL, +}; + +static struct attribute_group fme_errors_attr_group = { + .attrs = fme_errors_attrs, + .name = "fme-errors", +}; + +static const struct attribute_group *error_groups[] = { + &fme_errors_attr_group, + &errors_attr_group, + NULL +}; + +static void fme_error_enable(struct dfl_feature *feature) +{ + void __iomem *base = feature->ioaddr; + + /* Workaround: disable MBP_ERROR if revision is 0 */ + writeq(dfl_feature_revision(feature->ioaddr) ? 0ULL : MBP_ERROR, + base + FME_ERROR_MASK); + writeq(0ULL, base + PCIE0_ERROR_MASK); + writeq(0ULL, base + PCIE1_ERROR_MASK); + writeq(0ULL, base + RAS_NONFAT_ERROR_MASK); + writeq(0ULL, base + RAS_CATFAT_ERROR_MASK); +} + +static void err_dev_release(struct device *dev) +{ + kfree(dev); +} + +static int fme_global_err_init(struct platform_device *pdev, + struct dfl_feature *feature) +{ + struct device *dev; + int ret = 0; + + dev_dbg(&pdev->dev, "FME Global Error Reporting Init.\n"); + + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (!dev) + return -ENOMEM; + + dev->parent = &pdev->dev; + dev->release = err_dev_release; + dev_set_name(dev, "errors"); + + fme_error_enable(feature); + + ret = device_register(dev); + if (ret) { + put_device(dev); + return ret; + } + + ret = sysfs_create_groups(&dev->kobj, error_groups); + if (ret) { + device_unregister(dev); + return ret; + } + + feature->priv = dev; + + return ret; +} + +static void fme_global_err_uinit(struct platform_device *pdev, + struct dfl_feature *feature) +{ + struct device *dev = feature->priv; + + dev_dbg(&pdev->dev, "FME Global Error Reporting UInit.\n"); + + sysfs_remove_groups(&dev->kobj, error_groups); + device_unregister(dev); +} + +const struct dfl_feature_id fme_global_err_id_table[] = { + {.id = FME_FEATURE_ID_GLOBAL_ERR,}, + {0,} +}; + +const struct dfl_feature_ops fme_global_err_ops = { + .init = fme_global_err_init, + .uinit = fme_global_err_uinit, +}; diff --git a/drivers/fpga/dfl-fme-main.c b/drivers/fpga/dfl-fme-main.c index 2d69b8f..4490cf4 100644 --- a/drivers/fpga/dfl-fme-main.c +++ b/drivers/fpga/dfl-fme-main.c @@ -227,6 +227,10 @@ static long fme_hdr_ioctl(struct platform_device *pdev, .ops = &fme_pr_mgmt_ops, }, { + .id_table = fme_global_err_id_table, + .ops = &fme_global_err_ops, + }, + { .ops = NULL, }, }; diff --git a/drivers/fpga/dfl-fme.h b/drivers/fpga/dfl-fme.h index 7a021c4..5fbe3f5 100644 --- a/drivers/fpga/dfl-fme.h +++ b/drivers/fpga/dfl-fme.h @@ -37,5 +37,7 @@ struct dfl_fme { extern const struct dfl_feature_ops fme_pr_mgmt_ops; extern const struct dfl_feature_id fme_pr_mgmt_id_table[]; +extern const struct dfl_feature_ops fme_global_err_ops; +extern const struct dfl_feature_id fme_global_err_id_table[]; #endif /* __DFL_FME_H */ diff --git a/drivers/fpga/dfl.h b/drivers/fpga/dfl.h index fbc57f0..6c32080 100644 --- a/drivers/fpga/dfl.h +++ b/drivers/fpga/dfl.h @@ -197,12 +197,14 @@ struct dfl_feature_driver { * feature dev (platform device)'s reources. * @ioaddr: mapped mmio resource address. * @ops: ops of this sub feature. + * @priv: priv data of this feature. */ struct dfl_feature { u64 id; int resource_index; void __iomem *ioaddr; const struct dfl_feature_ops *ops; + void *priv; }; #define DEV_STATUS_IN_USE 0