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path: root/drivers/pci/pci-sysfs.c
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Diffstat (limited to 'drivers/pci/pci-sysfs.c')
-rw-r--r--drivers/pci/pci-sysfs.c160
1 files changed, 97 insertions, 63 deletions
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index 7128cfdd64aa..c91e6c18debc 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -10,7 +10,7 @@
*
* File attributes for PCI devices
*
- * Modeled after usb's driverfs.c
+ * Modeled after usb's driverfs.c
*
*/
@@ -42,7 +42,8 @@ field##_show(struct device *dev, struct device_attribute *attr, char *buf) \
\
pdev = to_pci_dev (dev); \
return sprintf (buf, format_string, pdev->field); \
-}
+} \
+static DEVICE_ATTR_RO(field)
pci_config_attr(vendor, "0x%04x\n");
pci_config_attr(device, "0x%04x\n");
@@ -73,10 +74,13 @@ static ssize_t broken_parity_status_store(struct device *dev,
return count;
}
+static DEVICE_ATTR_RW(broken_parity_status);
-static ssize_t local_cpus_show(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
+static ssize_t pci_dev_show_local_cpu(struct device *dev,
+ int type,
+ struct device_attribute *attr,
+ char *buf)
+{
const struct cpumask *mask;
int len;
@@ -86,30 +90,28 @@ static ssize_t local_cpus_show(struct device *dev,
#else
mask = cpumask_of_pcibus(to_pci_dev(dev)->bus);
#endif
- len = cpumask_scnprintf(buf, PAGE_SIZE-2, mask);
+ len = type ?
+ cpumask_scnprintf(buf, PAGE_SIZE-2, mask) :
+ cpulist_scnprintf(buf, PAGE_SIZE-2, mask);
+
buf[len++] = '\n';
buf[len] = '\0';
return len;
}
+static ssize_t local_cpus_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return pci_dev_show_local_cpu(dev, 1, attr, buf);
+}
+static DEVICE_ATTR_RO(local_cpus);
static ssize_t local_cpulist_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
- const struct cpumask *mask;
- int len;
-
-#ifdef CONFIG_NUMA
- mask = (dev_to_node(dev) == -1) ? cpu_online_mask :
- cpumask_of_node(dev_to_node(dev));
-#else
- mask = cpumask_of_pcibus(to_pci_dev(dev)->bus);
-#endif
- len = cpulist_scnprintf(buf, PAGE_SIZE-2, mask);
- buf[len++] = '\n';
- buf[len] = '\0';
- return len;
+ return pci_dev_show_local_cpu(dev, 0, attr, buf);
}
+static DEVICE_ATTR_RO(local_cpulist);
/*
* PCI Bus Class Devices
@@ -170,6 +172,7 @@ resource_show(struct device * dev, struct device_attribute *attr, char * buf)
}
return (str - buf);
}
+static DEVICE_ATTR_RO(resource);
static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
{
@@ -181,10 +184,11 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
(u8)(pci_dev->class >> 16), (u8)(pci_dev->class >> 8),
(u8)(pci_dev->class));
}
+static DEVICE_ATTR_RO(modalias);
-static ssize_t is_enabled_store(struct device *dev,
- struct device_attribute *attr, const char *buf,
- size_t count)
+static ssize_t enabled_store(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
{
struct pci_dev *pdev = to_pci_dev(dev);
unsigned long val;
@@ -208,14 +212,15 @@ static ssize_t is_enabled_store(struct device *dev,
return result < 0 ? result : count;
}
-static ssize_t is_enabled_show(struct device *dev,
- struct device_attribute *attr, char *buf)
+static ssize_t enabled_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
struct pci_dev *pdev;
pdev = to_pci_dev (dev);
return sprintf (buf, "%u\n", atomic_read(&pdev->enable_cnt));
}
+static DEVICE_ATTR_RW(enabled);
#ifdef CONFIG_NUMA
static ssize_t
@@ -223,6 +228,7 @@ numa_node_show(struct device *dev, struct device_attribute *attr, char *buf)
{
return sprintf (buf, "%d\n", dev->numa_node);
}
+static DEVICE_ATTR_RO(numa_node);
#endif
static ssize_t
@@ -232,6 +238,7 @@ dma_mask_bits_show(struct device *dev, struct device_attribute *attr, char *buf)
return sprintf (buf, "%d\n", fls64(pdev->dma_mask));
}
+static DEVICE_ATTR_RO(dma_mask_bits);
static ssize_t
consistent_dma_mask_bits_show(struct device *dev, struct device_attribute *attr,
@@ -239,6 +246,7 @@ consistent_dma_mask_bits_show(struct device *dev, struct device_attribute *attr,
{
return sprintf (buf, "%d\n", fls64(dev->coherent_dma_mask));
}
+static DEVICE_ATTR_RO(consistent_dma_mask_bits);
static ssize_t
msi_bus_show(struct device *dev, struct device_attribute *attr, char *buf)
@@ -262,13 +270,17 @@ msi_bus_store(struct device *dev, struct device_attribute *attr,
if (kstrtoul(buf, 0, &val) < 0)
return -EINVAL;
- /* bad things may happen if the no_msi flag is changed
- * while some drivers are loaded */
+ /*
+ * Bad things may happen if the no_msi flag is changed
+ * while drivers are loaded.
+ */
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
- /* Maybe pci devices without subordinate busses shouldn't even have this
- * attribute in the first place? */
+ /*
+ * Maybe devices without subordinate buses shouldn't have this
+ * attribute in the first place?
+ */
if (!pdev->subordinate)
return count;
@@ -283,6 +295,7 @@ msi_bus_store(struct device *dev, struct device_attribute *attr,
return count;
}
+static DEVICE_ATTR_RW(msi_bus);
static DEFINE_MUTEX(pci_remove_rescan_mutex);
static ssize_t bus_rescan_store(struct bus_type *bus, const char *buf,
@@ -302,10 +315,20 @@ static ssize_t bus_rescan_store(struct bus_type *bus, const char *buf,
}
return count;
}
+static BUS_ATTR(rescan, (S_IWUSR|S_IWGRP), NULL, bus_rescan_store);
+
+static struct attribute *pci_bus_attrs[] = {
+ &bus_attr_rescan.attr,
+ NULL,
+};
-struct bus_attribute pci_bus_attrs[] = {
- __ATTR(rescan, (S_IWUSR|S_IWGRP), NULL, bus_rescan_store),
- __ATTR_NULL
+static const struct attribute_group pci_bus_group = {
+ .attrs = pci_bus_attrs,
+};
+
+const struct attribute_group *pci_bus_groups[] = {
+ &pci_bus_group,
+ NULL,
};
static ssize_t
@@ -325,8 +348,9 @@ dev_rescan_store(struct device *dev, struct device_attribute *attr,
}
return count;
}
-struct device_attribute dev_rescan_attr = __ATTR(rescan, (S_IWUSR|S_IWGRP),
- NULL, dev_rescan_store);
+static struct device_attribute dev_rescan_attr = __ATTR(rescan,
+ (S_IWUSR|S_IWGRP),
+ NULL, dev_rescan_store);
static void remove_callback(struct device *dev)
{
@@ -356,8 +380,9 @@ remove_store(struct device *dev, struct device_attribute *dummy,
count = ret;
return count;
}
-struct device_attribute dev_remove_attr = __ATTR(remove, (S_IWUSR|S_IWGRP),
- NULL, remove_store);
+static struct device_attribute dev_remove_attr = __ATTR(remove,
+ (S_IWUSR|S_IWGRP),
+ NULL, remove_store);
static ssize_t
dev_bus_rescan_store(struct device *dev, struct device_attribute *attr,
@@ -404,6 +429,7 @@ static ssize_t d3cold_allowed_show(struct device *dev,
struct pci_dev *pdev = to_pci_dev(dev);
return sprintf (buf, "%u\n", pdev->d3cold_allowed);
}
+static DEVICE_ATTR_RW(d3cold_allowed);
#endif
#ifdef CONFIG_PCI_IOV
@@ -489,30 +515,38 @@ static struct device_attribute sriov_numvfs_attr =
sriov_numvfs_show, sriov_numvfs_store);
#endif /* CONFIG_PCI_IOV */
-struct device_attribute pci_dev_attrs[] = {
- __ATTR_RO(resource),
- __ATTR_RO(vendor),
- __ATTR_RO(device),
- __ATTR_RO(subsystem_vendor),
- __ATTR_RO(subsystem_device),
- __ATTR_RO(class),
- __ATTR_RO(irq),
- __ATTR_RO(local_cpus),
- __ATTR_RO(local_cpulist),
- __ATTR_RO(modalias),
+static struct attribute *pci_dev_attrs[] = {
+ &dev_attr_resource.attr,
+ &dev_attr_vendor.attr,
+ &dev_attr_device.attr,
+ &dev_attr_subsystem_vendor.attr,
+ &dev_attr_subsystem_device.attr,
+ &dev_attr_class.attr,
+ &dev_attr_irq.attr,
+ &dev_attr_local_cpus.attr,
+ &dev_attr_local_cpulist.attr,
+ &dev_attr_modalias.attr,
#ifdef CONFIG_NUMA
- __ATTR_RO(numa_node),
+ &dev_attr_numa_node.attr,
#endif
- __ATTR_RO(dma_mask_bits),
- __ATTR_RO(consistent_dma_mask_bits),
- __ATTR(enable, 0600, is_enabled_show, is_enabled_store),
- __ATTR(broken_parity_status,(S_IRUGO|S_IWUSR),
- broken_parity_status_show,broken_parity_status_store),
- __ATTR(msi_bus, 0644, msi_bus_show, msi_bus_store),
+ &dev_attr_dma_mask_bits.attr,
+ &dev_attr_consistent_dma_mask_bits.attr,
+ &dev_attr_enabled.attr,
+ &dev_attr_broken_parity_status.attr,
+ &dev_attr_msi_bus.attr,
#if defined(CONFIG_PM_RUNTIME) && defined(CONFIG_ACPI)
- __ATTR(d3cold_allowed, 0644, d3cold_allowed_show, d3cold_allowed_store),
+ &dev_attr_d3cold_allowed.attr,
#endif
- __ATTR_NULL,
+ NULL,
+};
+
+static const struct attribute_group pci_dev_group = {
+ .attrs = pci_dev_attrs,
+};
+
+const struct attribute_group *pci_dev_groups[] = {
+ &pci_dev_group,
+ NULL,
};
static struct attribute *pcibus_attrs[] = {
@@ -544,7 +578,7 @@ boot_vga_show(struct device *dev, struct device_attribute *attr, char *buf)
!!(pdev->resource[PCI_ROM_RESOURCE].flags &
IORESOURCE_ROM_SHADOW));
}
-struct device_attribute vga_attr = __ATTR_RO(boot_vga);
+static struct device_attribute vga_attr = __ATTR_RO(boot_vga);
static ssize_t
pci_read_config(struct file *filp, struct kobject *kobj,
@@ -640,7 +674,7 @@ pci_write_config(struct file* filp, struct kobject *kobj,
size = dev->cfg_size - off;
count = size;
}
-
+
pci_config_pm_runtime_get(dev);
if ((off & 1) && size) {
@@ -648,7 +682,7 @@ pci_write_config(struct file* filp, struct kobject *kobj,
off++;
size--;
}
-
+
if ((off & 3) && size > 2) {
u16 val = data[off - init_off];
val |= (u16) data[off - init_off + 1] << 8;
@@ -666,7 +700,7 @@ pci_write_config(struct file* filp, struct kobject *kobj,
off += 4;
size -= 4;
}
-
+
if (size >= 2) {
u16 val = data[off - init_off];
val |= (u16) data[off - init_off + 1] << 8;
@@ -1199,21 +1233,21 @@ pci_read_rom(struct file *filp, struct kobject *kobj,
if (!pdev->rom_attr_enabled)
return -EINVAL;
-
+
rom = pci_map_rom(pdev, &size); /* size starts out as PCI window size */
if (!rom || !size)
return -EIO;
-
+
if (off >= size)
count = 0;
else {
if (off + count > size)
count = size - off;
-
+
memcpy_fromio(buf, rom + off, count);
}
pci_unmap_rom(pdev, rom);
-
+
return count;
}