From patchwork Fri Aug 9 19:57:21 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kelsey X-Patchwork-Id: 11087519 X-Patchwork-Delegate: bhelgaas@google.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 3B63513B1 for ; Fri, 9 Aug 2019 19:57:34 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 282351FFEB for ; Fri, 9 Aug 2019 19:57:34 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1C6E9206AF; Fri, 9 Aug 2019 19:57:34 +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=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,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 4C6F81FF30 for ; Fri, 9 Aug 2019 19:57:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725985AbfHIT5c (ORCPT ); Fri, 9 Aug 2019 15:57:32 -0400 Received: from mail-ot1-f65.google.com ([209.85.210.65]:42603 "EHLO mail-ot1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726309AbfHIT5a (ORCPT ); Fri, 9 Aug 2019 15:57:30 -0400 Received: by mail-ot1-f65.google.com with SMTP id l15so137138270otn.9; Fri, 09 Aug 2019 12:57:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=QeE7q2BJkIjkpGDZgphDh+39oK407YM0dap/PDYMJHI=; b=kEcy4gAu2haY5Z6HTpOImskYlGxJkhQL7TR2JyIfBUE4WgUoI5fKnIqusJKp2bJCxR AyTn7j7Mx2iFS9APFS8nEgQ7YXOCXxe0Y9shbqncmfEJ7zFr1mySL78oXGOAeGl1p1ch 2KBLmaqXyWzQ8GvDjqwlJv803mUif76il1xni945WF+oXQv8fa8iWOgB49Cze4PzA310 5BMjHjFVFsdWsCKz6v/A2hNy87N5BiE98AeHNQ/4txGvpdEX7J4f0AeEsETimr3lpIo8 AqMmfFj6HpIa/5ZgMfvkXZzNf+FE6iQiycLl+UX/VYK9U27h7B4nhbBJJnLCv3zkw9x6 nRnQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=QeE7q2BJkIjkpGDZgphDh+39oK407YM0dap/PDYMJHI=; b=miwGzPeDC/CDMJF4GDv2a1mnxu8cIQLH8bF47KQpEx5FOdkgbVCPEksIgBv8E5bE40 94Ji+AnsIc5lW7Efn+xrLwmH74z4cGLXSE8sx/FPG6cwwfNLI7QCQ6QxZNDnkPno3HZ2 i3UA7uuoXnA3tH8U1jgcc6rYffe+xl9FF2qBPa7wdqRYZaXOWdygjya1coOJDMpm5o4m yfHDvK3YhIL0HQ7xKZtwORvXVPHQG6vsi9yohqneTLhgjQVsyByfnlP6VAX5e+o0XEeL ijX7TqjOXfpVRDCahr/1a9/MmSj7Zllb6h1qUDb22xMbG2IeAcp6S31z8F6bwh1zVIdG 2weA== X-Gm-Message-State: APjAAAXxj2vOlPJlSE0nHpUq9t6LCbFNaun+CyuKnZgBT0zJrU7eo6dU Qn32okAxc5xs4pTkNtiRQ84= X-Google-Smtp-Source: APXvYqzneuuJWfpFeg2GD5qM8Qo4P8uhAHfjCiSX4whFV27J8HogjCPfx02jyr5i2NybQVVWAZ2L+Q== X-Received: by 2002:a5e:c914:: with SMTP id z20mr17224178iol.272.1565380648947; Fri, 09 Aug 2019 12:57:28 -0700 (PDT) Received: from localhost.localdomain (c-73-243-191-173.hsd1.co.comcast.net. [73.243.191.173]) by smtp.gmail.com with ESMTPSA id h8sm90331803ioq.61.2019.08.09.12.57.27 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Fri, 09 Aug 2019 12:57:28 -0700 (PDT) From: Kelsey Skunberg To: bhelgaas@google.com, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org Cc: skunberg.kelsey@gmail.com, skhan@linuxfoundation.org, linux-kernel-mentees@lists.linuxfoundation.org Subject: [PATCH] PCI/IOV: Move sysfs SR-IOV functions to iov.c Date: Fri, 9 Aug 2019 13:57:21 -0600 Message-Id: <20190809195721.34237-1-skunberg.kelsey@gmail.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The sysfs SR-IOV functions are for an optional feature and will be better organized to keep with the feature's code. Move the sysfs SR-IOV functions to /pci/iov.c. Signed-off-by: Kelsey Skunberg --- drivers/pci/iov.c | 173 +++++++++++++++++++++++++++++++++++++++ drivers/pci/pci-sysfs.c | 176 ---------------------------------------- drivers/pci/pci.h | 2 +- 3 files changed, 174 insertions(+), 177 deletions(-) diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c index 9b48818ced01..661051adf23f 100644 --- a/drivers/pci/iov.c +++ b/drivers/pci/iov.c @@ -240,6 +240,179 @@ void pci_iov_remove_virtfn(struct pci_dev *dev, int id) pci_dev_put(dev); } +static ssize_t sriov_totalvfs_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct pci_dev *pdev = to_pci_dev(dev); + + return sprintf(buf, "%u\n", pci_sriov_get_totalvfs(pdev)); +} + +static ssize_t sriov_numvfs_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct pci_dev *pdev = to_pci_dev(dev); + + return sprintf(buf, "%u\n", pdev->sriov->num_VFs); +} + +/* + * num_vfs > 0; number of VFs to enable + * num_vfs = 0; disable all VFs + * + * Note: SRIOV spec does not allow partial VF + * disable, so it's all or none. + */ +static ssize_t sriov_numvfs_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct pci_dev *pdev = to_pci_dev(dev); + int ret; + u16 num_vfs; + + ret = kstrtou16(buf, 0, &num_vfs); + if (ret < 0) + return ret; + + if (num_vfs > pci_sriov_get_totalvfs(pdev)) + return -ERANGE; + + device_lock(&pdev->dev); + + if (num_vfs == pdev->sriov->num_VFs) + goto exit; + + /* is PF driver loaded w/callback */ + if (!pdev->driver || !pdev->driver->sriov_configure) { + pci_info(pdev, "Driver does not support SRIOV configuration via sysfs\n"); + ret = -ENOENT; + goto exit; + } + + if (num_vfs == 0) { + /* disable VFs */ + ret = pdev->driver->sriov_configure(pdev, 0); + goto exit; + } + + /* enable VFs */ + if (pdev->sriov->num_VFs) { + pci_warn(pdev, "%d VFs already enabled. Disable before enabling %d VFs\n", + pdev->sriov->num_VFs, num_vfs); + ret = -EBUSY; + goto exit; + } + + ret = pdev->driver->sriov_configure(pdev, num_vfs); + if (ret < 0) + goto exit; + + if (ret != num_vfs) + pci_warn(pdev, "%d VFs requested; only %d enabled\n", + num_vfs, ret); + +exit: + device_unlock(&pdev->dev); + + if (ret < 0) + return ret; + + return count; +} + +static ssize_t sriov_offset_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct pci_dev *pdev = to_pci_dev(dev); + + return sprintf(buf, "%u\n", pdev->sriov->offset); +} + +static ssize_t sriov_stride_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct pci_dev *pdev = to_pci_dev(dev); + + return sprintf(buf, "%u\n", pdev->sriov->stride); +} + +static ssize_t sriov_vf_device_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct pci_dev *pdev = to_pci_dev(dev); + + return sprintf(buf, "%x\n", pdev->sriov->vf_device); +} + +static ssize_t sriov_drivers_autoprobe_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct pci_dev *pdev = to_pci_dev(dev); + + return sprintf(buf, "%u\n", pdev->sriov->drivers_autoprobe); +} + +static ssize_t sriov_drivers_autoprobe_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct pci_dev *pdev = to_pci_dev(dev); + bool drivers_autoprobe; + + if (kstrtobool(buf, &drivers_autoprobe) < 0) + return -EINVAL; + + pdev->sriov->drivers_autoprobe = drivers_autoprobe; + + return count; +} + +static struct device_attribute sriov_totalvfs_attr = __ATTR_RO(sriov_totalvfs); +static struct device_attribute sriov_numvfs_attr = + __ATTR(sriov_numvfs, (S_IRUGO | S_IWUSR | S_IWGRP), + sriov_numvfs_show, sriov_numvfs_store); +static struct device_attribute sriov_offset_attr = __ATTR_RO(sriov_offset); +static struct device_attribute sriov_stride_attr = __ATTR_RO(sriov_stride); +static struct device_attribute sriov_vf_device_attr = + __ATTR_RO(sriov_vf_device); +static struct device_attribute sriov_drivers_autoprobe_attr = + __ATTR(sriov_drivers_autoprobe, (S_IRUGO | S_IWUSR | S_IWGRP), + sriov_drivers_autoprobe_show, + sriov_drivers_autoprobe_store); + +static struct attribute *sriov_dev_attrs[] = { + &sriov_totalvfs_attr.attr, + &sriov_numvfs_attr.attr, + &sriov_offset_attr.attr, + &sriov_stride_attr.attr, + &sriov_vf_device_attr.attr, + &sriov_drivers_autoprobe_attr.attr, + NULL, +}; + +static umode_t sriov_attrs_are_visible(struct kobject *kobj, + struct attribute *a, int n) +{ + struct device *dev = kobj_to_dev(kobj); + + if (!dev_is_pf(dev)) + return 0; + + return a->mode; +} + +const struct attribute_group sriov_dev_attr_group = { + .attrs = sriov_dev_attrs, + .is_visible = sriov_attrs_are_visible, +}; + int __weak pcibios_sriov_enable(struct pci_dev *pdev, u16 num_vfs) { return 0; diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c index 965c72104150..d5c35434810b 100644 --- a/drivers/pci/pci-sysfs.c +++ b/drivers/pci/pci-sysfs.c @@ -551,154 +551,6 @@ static ssize_t devspec_show(struct device *dev, static DEVICE_ATTR_RO(devspec); #endif -#ifdef CONFIG_PCI_IOV -static ssize_t sriov_totalvfs_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct pci_dev *pdev = to_pci_dev(dev); - - return sprintf(buf, "%u\n", pci_sriov_get_totalvfs(pdev)); -} - - -static ssize_t sriov_numvfs_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct pci_dev *pdev = to_pci_dev(dev); - - return sprintf(buf, "%u\n", pdev->sriov->num_VFs); -} - -/* - * num_vfs > 0; number of VFs to enable - * num_vfs = 0; disable all VFs - * - * Note: SRIOV spec doesn't allow partial VF - * disable, so it's all or none. - */ -static ssize_t sriov_numvfs_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - struct pci_dev *pdev = to_pci_dev(dev); - int ret; - u16 num_vfs; - - ret = kstrtou16(buf, 0, &num_vfs); - if (ret < 0) - return ret; - - if (num_vfs > pci_sriov_get_totalvfs(pdev)) - return -ERANGE; - - device_lock(&pdev->dev); - - if (num_vfs == pdev->sriov->num_VFs) - goto exit; - - /* is PF driver loaded w/callback */ - if (!pdev->driver || !pdev->driver->sriov_configure) { - pci_info(pdev, "Driver doesn't support SRIOV configuration via sysfs\n"); - ret = -ENOENT; - goto exit; - } - - if (num_vfs == 0) { - /* disable VFs */ - ret = pdev->driver->sriov_configure(pdev, 0); - goto exit; - } - - /* enable VFs */ - if (pdev->sriov->num_VFs) { - pci_warn(pdev, "%d VFs already enabled. Disable before enabling %d VFs\n", - pdev->sriov->num_VFs, num_vfs); - ret = -EBUSY; - goto exit; - } - - ret = pdev->driver->sriov_configure(pdev, num_vfs); - if (ret < 0) - goto exit; - - if (ret != num_vfs) - pci_warn(pdev, "%d VFs requested; only %d enabled\n", - num_vfs, ret); - -exit: - device_unlock(&pdev->dev); - - if (ret < 0) - return ret; - - return count; -} - -static ssize_t sriov_offset_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct pci_dev *pdev = to_pci_dev(dev); - - return sprintf(buf, "%u\n", pdev->sriov->offset); -} - -static ssize_t sriov_stride_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct pci_dev *pdev = to_pci_dev(dev); - - return sprintf(buf, "%u\n", pdev->sriov->stride); -} - -static ssize_t sriov_vf_device_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct pci_dev *pdev = to_pci_dev(dev); - - return sprintf(buf, "%x\n", pdev->sriov->vf_device); -} - -static ssize_t sriov_drivers_autoprobe_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct pci_dev *pdev = to_pci_dev(dev); - - return sprintf(buf, "%u\n", pdev->sriov->drivers_autoprobe); -} - -static ssize_t sriov_drivers_autoprobe_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - struct pci_dev *pdev = to_pci_dev(dev); - bool drivers_autoprobe; - - if (kstrtobool(buf, &drivers_autoprobe) < 0) - return -EINVAL; - - pdev->sriov->drivers_autoprobe = drivers_autoprobe; - - return count; -} - -static struct device_attribute sriov_totalvfs_attr = __ATTR_RO(sriov_totalvfs); -static struct device_attribute sriov_numvfs_attr = - __ATTR(sriov_numvfs, (S_IRUGO|S_IWUSR|S_IWGRP), - sriov_numvfs_show, sriov_numvfs_store); -static struct device_attribute sriov_offset_attr = __ATTR_RO(sriov_offset); -static struct device_attribute sriov_stride_attr = __ATTR_RO(sriov_stride); -static struct device_attribute sriov_vf_device_attr = __ATTR_RO(sriov_vf_device); -static struct device_attribute sriov_drivers_autoprobe_attr = - __ATTR(sriov_drivers_autoprobe, (S_IRUGO|S_IWUSR|S_IWGRP), - sriov_drivers_autoprobe_show, sriov_drivers_autoprobe_store); -#endif /* CONFIG_PCI_IOV */ - static ssize_t driver_override_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) @@ -1697,34 +1549,6 @@ static const struct attribute_group pci_dev_hp_attr_group = { .is_visible = pci_dev_hp_attrs_are_visible, }; -#ifdef CONFIG_PCI_IOV -static struct attribute *sriov_dev_attrs[] = { - &sriov_totalvfs_attr.attr, - &sriov_numvfs_attr.attr, - &sriov_offset_attr.attr, - &sriov_stride_attr.attr, - &sriov_vf_device_attr.attr, - &sriov_drivers_autoprobe_attr.attr, - NULL, -}; - -static umode_t sriov_attrs_are_visible(struct kobject *kobj, - struct attribute *a, int n) -{ - struct device *dev = kobj_to_dev(kobj); - - if (!dev_is_pf(dev)) - return 0; - - return a->mode; -} - -static const struct attribute_group sriov_dev_attr_group = { - .attrs = sriov_dev_attrs, - .is_visible = sriov_attrs_are_visible, -}; -#endif /* CONFIG_PCI_IOV */ - static const struct attribute_group pci_dev_attr_group = { .attrs = pci_dev_dev_attrs, .is_visible = pci_dev_attrs_are_visible, diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index 61bbfd611140..7e3c6c8ae6f9 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -455,7 +455,7 @@ void pci_iov_update_resource(struct pci_dev *dev, int resno); resource_size_t pci_sriov_resource_alignment(struct pci_dev *dev, int resno); void pci_restore_iov_state(struct pci_dev *dev); int pci_iov_bus_range(struct pci_bus *bus); - +extern const struct attribute_group sriov_dev_attr_group; #else static inline int pci_iov_init(struct pci_dev *dev) {