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author | Bjorn Helgaas <bhelgaas@google.com> | 2013-08-01 11:03:52 -0600 |
---|---|---|
committer | Bjorn Helgaas <bhelgaas@google.com> | 2013-08-01 11:03:52 -0600 |
commit | cbe2bb4f2bc14876ab9e1729933a7453ded250d1 (patch) | |
tree | 4662c8812671996e0f39f8ac1b6e21e700a630d7 /drivers/pci | |
parent | 28fa60a83034fbbb74dcf4bb6025b5b28bd21ea8 (diff) | |
parent | ce1be10bf6dc8406ae773f0ac6265585a4154d37 (diff) | |
download | linux-cbe2bb4f2bc14876ab9e1729933a7453ded250d1.tar.gz linux-cbe2bb4f2bc14876ab9e1729933a7453ded250d1.tar.bz2 linux-cbe2bb4f2bc14876ab9e1729933a7453ded250d1.zip |
Merge branch 'pci/misc' into next
* pci/misc:
PCI: Fix comment typo for pci_add_cap_save_buffer()
PCI: Return -ENOSYS for SR-IOV operations on non-SR-IOV devices
PCI: Update NumVFs register when disabling SR-IOV
x86/PCI: MMCONFIG: Check earlier for MMCONFIG region at address zero
PCI: Convert class code to use dev_groups
frv/PCI: Mark pcibios_fixup_bus() as non-init
x86/pci/mrst: Cleanup checkpatch.pl warnings
PCI: Rename "PCI Express support" kconfig title
PCI: Fix comment typo in iov.c
Diffstat (limited to 'drivers/pci')
-rw-r--r-- | drivers/pci/iov.c | 23 | ||||
-rw-r--r-- | drivers/pci/pci-sysfs.c | 32 | ||||
-rw-r--r-- | drivers/pci/pci.c | 2 | ||||
-rw-r--r-- | drivers/pci/pci.h | 2 | ||||
-rw-r--r-- | drivers/pci/pcie/Kconfig | 2 | ||||
-rw-r--r-- | drivers/pci/probe.c | 2 |
6 files changed, 39 insertions, 24 deletions
diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c index de8ffacf9c9b..21a7182dccd4 100644 --- a/drivers/pci/iov.c +++ b/drivers/pci/iov.c @@ -286,7 +286,6 @@ static int sriov_enable(struct pci_dev *dev, int nr_virtfn) (!(iov->cap & PCI_SRIOV_CAP_VFM) && (nr_virtfn > initial))) return -EINVAL; - pci_write_config_word(dev, iov->pos + PCI_SRIOV_NUM_VF, nr_virtfn); pci_read_config_word(dev, iov->pos + PCI_SRIOV_VF_OFFSET, &offset); pci_read_config_word(dev, iov->pos + PCI_SRIOV_VF_STRIDE, &stride); if (!offset || (nr_virtfn > 1 && !stride)) @@ -324,7 +323,7 @@ static int sriov_enable(struct pci_dev *dev, int nr_virtfn) if (!pdev->is_physfn) { pci_dev_put(pdev); - return -ENODEV; + return -ENOSYS; } rc = sysfs_create_link(&dev->dev.kobj, @@ -334,6 +333,7 @@ static int sriov_enable(struct pci_dev *dev, int nr_virtfn) return rc; } + pci_write_config_word(dev, iov->pos + PCI_SRIOV_NUM_VF, nr_virtfn); iov->ctrl |= PCI_SRIOV_CTRL_VFE | PCI_SRIOV_CTRL_MSE; pci_cfg_access_lock(dev); pci_write_config_word(dev, iov->pos + PCI_SRIOV_CTRL, iov->ctrl); @@ -368,6 +368,7 @@ failed: iov->ctrl &= ~(PCI_SRIOV_CTRL_VFE | PCI_SRIOV_CTRL_MSE); pci_cfg_access_lock(dev); pci_write_config_word(dev, iov->pos + PCI_SRIOV_CTRL, iov->ctrl); + pci_write_config_word(dev, iov->pos + PCI_SRIOV_NUM_VF, 0); ssleep(1); pci_cfg_access_unlock(dev); @@ -401,6 +402,7 @@ static void sriov_disable(struct pci_dev *dev) sysfs_remove_link(&dev->dev.kobj, "dep_link"); iov->num_VFs = 0; + pci_write_config_word(dev, iov->pos + PCI_SRIOV_NUM_VF, 0); } static int sriov_init(struct pci_dev *dev, int pos) @@ -662,7 +664,7 @@ int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn) might_sleep(); if (!dev->is_physfn) - return -ENODEV; + return -ENOSYS; return sriov_enable(dev, nr_virtfn); } @@ -722,7 +724,7 @@ EXPORT_SYMBOL_GPL(pci_num_vf); * @dev: the PCI device * * Returns number of VFs belonging to this device that are assigned to a guest. - * If device is not a physical function returns -ENODEV. + * If device is not a physical function returns 0. */ int pci_vfs_assigned(struct pci_dev *dev) { @@ -767,12 +769,15 @@ EXPORT_SYMBOL_GPL(pci_vfs_assigned); * device's mutex held. * * Returns 0 if PF is an SRIOV-capable device and - * value of numvfs valid. If not a PF with VFS, return -EINVAL; + * value of numvfs valid. If not a PF return -ENOSYS; + * if numvfs is invalid return -EINVAL; * if VFs already enabled, return -EBUSY. */ int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs) { - if (!dev->is_physfn || (numvfs > dev->sriov->total_VFs)) + if (!dev->is_physfn) + return -ENOSYS; + if (numvfs > dev->sriov->total_VFs) return -EINVAL; /* Shouldn't change if VFs already enabled */ @@ -786,17 +791,17 @@ int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs) EXPORT_SYMBOL_GPL(pci_sriov_set_totalvfs); /** - * pci_sriov_get_totalvfs -- get total VFs supported on this devic3 + * pci_sriov_get_totalvfs -- get total VFs supported on this device * @dev: the PCI PF device * * For a PCIe device with SRIOV support, return the PCIe * SRIOV capability value of TotalVFs or the value of driver_max_VFs - * if the driver reduced it. Otherwise, -EINVAL. + * if the driver reduced it. Otherwise 0. */ int pci_sriov_get_totalvfs(struct pci_dev *dev) { if (!dev->is_physfn) - return -EINVAL; + return 0; if (dev->sriov->driver_max_VFs) return dev->sriov->driver_max_VFs; diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c index c0dbe1f61362..7128cfdd64aa 100644 --- a/drivers/pci/pci-sysfs.c +++ b/drivers/pci/pci-sysfs.c @@ -131,19 +131,19 @@ static ssize_t pci_bus_show_cpuaffinity(struct device *dev, return ret; } -static inline ssize_t pci_bus_show_cpumaskaffinity(struct device *dev, - struct device_attribute *attr, - char *buf) +static ssize_t cpuaffinity_show(struct device *dev, + struct device_attribute *attr, char *buf) { return pci_bus_show_cpuaffinity(dev, 0, attr, buf); } +static DEVICE_ATTR_RO(cpuaffinity); -static inline ssize_t pci_bus_show_cpulistaffinity(struct device *dev, - struct device_attribute *attr, - char *buf) +static ssize_t cpulistaffinity_show(struct device *dev, + struct device_attribute *attr, char *buf) { return pci_bus_show_cpuaffinity(dev, 1, attr, buf); } +static DEVICE_ATTR_RO(cpulistaffinity); /* show resources */ static ssize_t @@ -379,6 +379,7 @@ dev_bus_rescan_store(struct device *dev, struct device_attribute *attr, } return count; } +static DEVICE_ATTR(rescan, (S_IWUSR|S_IWGRP), NULL, dev_bus_rescan_store); #if defined(CONFIG_PM_RUNTIME) && defined(CONFIG_ACPI) static ssize_t d3cold_allowed_store(struct device *dev, @@ -514,11 +515,20 @@ struct device_attribute pci_dev_attrs[] = { __ATTR_NULL, }; -struct device_attribute pcibus_dev_attrs[] = { - __ATTR(rescan, (S_IWUSR|S_IWGRP), NULL, dev_bus_rescan_store), - __ATTR(cpuaffinity, S_IRUGO, pci_bus_show_cpumaskaffinity, NULL), - __ATTR(cpulistaffinity, S_IRUGO, pci_bus_show_cpulistaffinity, NULL), - __ATTR_NULL, +static struct attribute *pcibus_attrs[] = { + &dev_attr_rescan.attr, + &dev_attr_cpuaffinity.attr, + &dev_attr_cpulistaffinity.attr, + NULL, +}; + +static const struct attribute_group pcibus_group = { + .attrs = pcibus_attrs, +}; + +const struct attribute_group *pcibus_groups[] = { + &pcibus_group, + NULL, }; static ssize_t diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index a599a6bbdf37..a8d5fd064264 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -1992,7 +1992,7 @@ static void pci_add_saved_cap(struct pci_dev *pci_dev, } /** - * pci_add_save_buffer - allocate buffer for saving given capability registers + * pci_add_cap_save_buffer - allocate buffer for saving given capability registers * @dev: the PCI device * @cap: the capability to allocate the buffer for * @size: requested size of the buffer diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index d1182c4a754e..816c297f170c 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -151,7 +151,7 @@ static inline int pci_no_d1d2(struct pci_dev *dev) } extern struct device_attribute pci_dev_attrs[]; -extern struct device_attribute pcibus_dev_attrs[]; +extern const struct attribute_group *pcibus_groups[]; extern struct device_type pci_dev_type; extern struct bus_attribute pci_bus_attrs[]; diff --git a/drivers/pci/pcie/Kconfig b/drivers/pci/pcie/Kconfig index 569f82fc9e22..a82e70a41039 100644 --- a/drivers/pci/pcie/Kconfig +++ b/drivers/pci/pcie/Kconfig @@ -2,7 +2,7 @@ # PCI Express Port Bus Configuration # config PCIEPORTBUS - bool "PCI Express support" + bool "PCI Express Port Bus support" depends on PCI help This automatically enables PCI Express Port Bus support. Users can diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 46ada5c098eb..cf57fe79450a 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -96,7 +96,7 @@ static void release_pcibus_dev(struct device *dev) static struct class pcibus_class = { .name = "pci_bus", .dev_release = &release_pcibus_dev, - .dev_attrs = pcibus_dev_attrs, + .dev_groups = pcibus_groups, }; static int __init pcibus_class_init(void) |