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PCI/IOV: Move sysfs SR-IOV functions to iov.c
The sysfs SR-IOV functions are only needed when the kernel is built with SR-IOV support. Rather than put them in pci-sysfs.c under #ifdef CONFIG_PCI_IOV, move them to iov.c, which is only compiled when CONFIG_PCI_IOV=y. Link: https://lore.kernel.org/r/20190813204513.4790-4-skunberg.kelsey@gmail.com Signed-off-by: Kelsey Skunberg <skunberg.kelsey@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Donald Dutile <ddutile@redhat.com> Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
This commit is contained in:
Kelsey Skunberg
Bjorn Helgaas
parent
e2154044dd
commit
aaee0c1ffd
@ -240,6 +240,174 @@ void pci_iov_remove_virtfn(struct pci_dev *dev, int id)
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pci_dev_put(dev);
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}
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static ssize_t sriov_totalvfs_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct pci_dev *pdev = to_pci_dev(dev);
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return sprintf(buf, "%u\n", pci_sriov_get_totalvfs(pdev));
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}
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static ssize_t sriov_numvfs_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct pci_dev *pdev = to_pci_dev(dev);
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return sprintf(buf, "%u\n", pdev->sriov->num_VFs);
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}
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/*
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* num_vfs > 0; number of VFs to enable
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* num_vfs = 0; disable all VFs
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*
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* Note: SRIOV spec does not allow partial VF
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* disable, so it's all or none.
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*/
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static ssize_t sriov_numvfs_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct pci_dev *pdev = to_pci_dev(dev);
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int ret;
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u16 num_vfs;
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ret = kstrtou16(buf, 0, &num_vfs);
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if (ret < 0)
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return ret;
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if (num_vfs > pci_sriov_get_totalvfs(pdev))
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return -ERANGE;
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device_lock(&pdev->dev);
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if (num_vfs == pdev->sriov->num_VFs)
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goto exit;
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/* is PF driver loaded w/callback */
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if (!pdev->driver || !pdev->driver->sriov_configure) {
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pci_info(pdev, "Driver does not support SRIOV configuration via sysfs\n");
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ret = -ENOENT;
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goto exit;
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}
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if (num_vfs == 0) {
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/* disable VFs */
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ret = pdev->driver->sriov_configure(pdev, 0);
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goto exit;
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}
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/* enable VFs */
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if (pdev->sriov->num_VFs) {
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pci_warn(pdev, "%d VFs already enabled. Disable before enabling %d VFs\n",
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pdev->sriov->num_VFs, num_vfs);
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ret = -EBUSY;
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goto exit;
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}
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ret = pdev->driver->sriov_configure(pdev, num_vfs);
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if (ret < 0)
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goto exit;
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if (ret != num_vfs)
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pci_warn(pdev, "%d VFs requested; only %d enabled\n",
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num_vfs, ret);
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exit:
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device_unlock(&pdev->dev);
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if (ret < 0)
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return ret;
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return count;
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}
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static ssize_t sriov_offset_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct pci_dev *pdev = to_pci_dev(dev);
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return sprintf(buf, "%u\n", pdev->sriov->offset);
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}
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static ssize_t sriov_stride_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct pci_dev *pdev = to_pci_dev(dev);
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return sprintf(buf, "%u\n", pdev->sriov->stride);
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}
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static ssize_t sriov_vf_device_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct pci_dev *pdev = to_pci_dev(dev);
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return sprintf(buf, "%x\n", pdev->sriov->vf_device);
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}
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static ssize_t sriov_drivers_autoprobe_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct pci_dev *pdev = to_pci_dev(dev);
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return sprintf(buf, "%u\n", pdev->sriov->drivers_autoprobe);
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}
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static ssize_t sriov_drivers_autoprobe_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct pci_dev *pdev = to_pci_dev(dev);
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bool drivers_autoprobe;
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if (kstrtobool(buf, &drivers_autoprobe) < 0)
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return -EINVAL;
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pdev->sriov->drivers_autoprobe = drivers_autoprobe;
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return count;
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}
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static DEVICE_ATTR_RO(sriov_totalvfs);
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static DEVICE_ATTR(sriov_numvfs, 0664, sriov_numvfs_show, sriov_numvfs_store);
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static DEVICE_ATTR_RO(sriov_offset);
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static DEVICE_ATTR_RO(sriov_stride);
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static DEVICE_ATTR_RO(sriov_vf_device);
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static DEVICE_ATTR(sriov_drivers_autoprobe, 0664, sriov_drivers_autoprobe_show,
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sriov_drivers_autoprobe_store);
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static struct attribute *sriov_dev_attrs[] = {
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&dev_attr_sriov_totalvfs.attr,
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&dev_attr_sriov_numvfs.attr,
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&dev_attr_sriov_offset.attr,
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&dev_attr_sriov_stride.attr,
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&dev_attr_sriov_vf_device.attr,
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&dev_attr_sriov_drivers_autoprobe.attr,
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NULL,
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};
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static umode_t sriov_attrs_are_visible(struct kobject *kobj,
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struct attribute *a, int n)
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{
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struct device *dev = kobj_to_dev(kobj);
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if (!dev_is_pf(dev))
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return 0;
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return a->mode;
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}
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const struct attribute_group sriov_dev_attr_group = {
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.attrs = sriov_dev_attrs,
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.is_visible = sriov_attrs_are_visible,
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};
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int __weak pcibios_sriov_enable(struct pci_dev *pdev, u16 num_vfs)
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{
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return 0;
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@ -548,151 +548,6 @@ static ssize_t devspec_show(struct device *dev,
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static DEVICE_ATTR_RO(devspec);
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#endif
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#ifdef CONFIG_PCI_IOV
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static ssize_t sriov_totalvfs_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct pci_dev *pdev = to_pci_dev(dev);
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return sprintf(buf, "%u\n", pci_sriov_get_totalvfs(pdev));
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}
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static ssize_t sriov_numvfs_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct pci_dev *pdev = to_pci_dev(dev);
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return sprintf(buf, "%u\n", pdev->sriov->num_VFs);
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}
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/*
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* num_vfs > 0; number of VFs to enable
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* num_vfs = 0; disable all VFs
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*
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* Note: SRIOV spec doesn't allow partial VF
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* disable, so it's all or none.
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*/
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static ssize_t sriov_numvfs_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct pci_dev *pdev = to_pci_dev(dev);
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int ret;
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u16 num_vfs;
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ret = kstrtou16(buf, 0, &num_vfs);
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if (ret < 0)
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return ret;
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if (num_vfs > pci_sriov_get_totalvfs(pdev))
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return -ERANGE;
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device_lock(&pdev->dev);
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if (num_vfs == pdev->sriov->num_VFs)
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goto exit;
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/* is PF driver loaded w/callback */
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if (!pdev->driver || !pdev->driver->sriov_configure) {
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pci_info(pdev, "Driver doesn't support SRIOV configuration via sysfs\n");
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ret = -ENOENT;
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goto exit;
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}
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if (num_vfs == 0) {
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/* disable VFs */
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ret = pdev->driver->sriov_configure(pdev, 0);
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goto exit;
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}
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/* enable VFs */
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if (pdev->sriov->num_VFs) {
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pci_warn(pdev, "%d VFs already enabled. Disable before enabling %d VFs\n",
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pdev->sriov->num_VFs, num_vfs);
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ret = -EBUSY;
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goto exit;
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}
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ret = pdev->driver->sriov_configure(pdev, num_vfs);
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if (ret < 0)
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goto exit;
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if (ret != num_vfs)
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pci_warn(pdev, "%d VFs requested; only %d enabled\n",
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num_vfs, ret);
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exit:
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device_unlock(&pdev->dev);
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if (ret < 0)
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return ret;
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return count;
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}
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static ssize_t sriov_offset_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct pci_dev *pdev = to_pci_dev(dev);
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return sprintf(buf, "%u\n", pdev->sriov->offset);
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}
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static ssize_t sriov_stride_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct pci_dev *pdev = to_pci_dev(dev);
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return sprintf(buf, "%u\n", pdev->sriov->stride);
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}
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static ssize_t sriov_vf_device_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct pci_dev *pdev = to_pci_dev(dev);
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return sprintf(buf, "%x\n", pdev->sriov->vf_device);
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}
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static ssize_t sriov_drivers_autoprobe_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct pci_dev *pdev = to_pci_dev(dev);
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return sprintf(buf, "%u\n", pdev->sriov->drivers_autoprobe);
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}
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static ssize_t sriov_drivers_autoprobe_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct pci_dev *pdev = to_pci_dev(dev);
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bool drivers_autoprobe;
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if (kstrtobool(buf, &drivers_autoprobe) < 0)
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return -EINVAL;
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pdev->sriov->drivers_autoprobe = drivers_autoprobe;
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return count;
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}
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static DEVICE_ATTR_RO(sriov_totalvfs);
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static DEVICE_ATTR(sriov_numvfs, 0664, sriov_numvfs_show, sriov_numvfs_store);
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static DEVICE_ATTR_RO(sriov_offset);
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static DEVICE_ATTR_RO(sriov_stride);
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static DEVICE_ATTR_RO(sriov_vf_device);
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static DEVICE_ATTR(sriov_drivers_autoprobe, 0664, sriov_drivers_autoprobe_show,
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sriov_drivers_autoprobe_store);
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#endif /* CONFIG_PCI_IOV */
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static ssize_t driver_override_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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@ -1691,34 +1546,6 @@ static const struct attribute_group pci_dev_hp_attr_group = {
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.is_visible = pci_dev_hp_attrs_are_visible,
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};
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#ifdef CONFIG_PCI_IOV
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static struct attribute *sriov_dev_attrs[] = {
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&dev_attr_sriov_totalvfs.attr,
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&dev_attr_sriov_numvfs.attr,
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&dev_attr_sriov_offset.attr,
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&dev_attr_sriov_stride.attr,
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&dev_attr_sriov_vf_device.attr,
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&dev_attr_sriov_drivers_autoprobe.attr,
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NULL,
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};
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static umode_t sriov_attrs_are_visible(struct kobject *kobj,
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struct attribute *a, int n)
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{
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struct device *dev = kobj_to_dev(kobj);
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if (!dev_is_pf(dev))
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return 0;
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return a->mode;
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}
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static const struct attribute_group sriov_dev_attr_group = {
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.attrs = sriov_dev_attrs,
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.is_visible = sriov_attrs_are_visible,
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};
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#endif /* CONFIG_PCI_IOV */
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static const struct attribute_group pci_dev_attr_group = {
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.attrs = pci_dev_dev_attrs,
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.is_visible = pci_dev_attrs_are_visible,
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@ -433,7 +433,7 @@ void pci_iov_update_resource(struct pci_dev *dev, int resno);
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resource_size_t pci_sriov_resource_alignment(struct pci_dev *dev, int resno);
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void pci_restore_iov_state(struct pci_dev *dev);
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int pci_iov_bus_range(struct pci_bus *bus);
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extern const struct attribute_group sriov_dev_attr_group;
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#else
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static inline int pci_iov_init(struct pci_dev *dev)
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{
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