static ssize_t local_cpus_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
- cpumask_t mask;
+ const struct cpumask *mask;
int len;
- mask = pcibus_to_cpumask(to_pci_dev(dev)->bus);
- len = cpumask_scnprintf(buf, PAGE_SIZE-2, &mask);
+ mask = cpumask_of_pcibus(to_pci_dev(dev)->bus);
+ len = cpumask_scnprintf(buf, PAGE_SIZE-2, mask);
buf[len++] = '\n';
buf[len] = '\0';
return len;
static ssize_t local_cpulist_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
- cpumask_t mask;
+ const struct cpumask *mask;
int len;
- mask = pcibus_to_cpumask(to_pci_dev(dev)->bus);
- len = cpulist_scnprintf(buf, PAGE_SIZE-2, &mask);
+ mask = cpumask_of_pcibus(to_pci_dev(dev)->bus);
+ len = cpulist_scnprintf(buf, PAGE_SIZE-2, mask);
buf[len++] = '\n';
buf[len] = '\0';
return len;
return -EPERM;
if (!val) {
- if (atomic_read(&pdev->enable_cnt) != 0)
+ if (pci_is_enabled(pdev))
pci_disable_device(pdev);
else
result = -EIO;
return count;
}
+#ifdef CONFIG_HOTPLUG
+static DEFINE_MUTEX(pci_remove_rescan_mutex);
+static ssize_t bus_rescan_store(struct bus_type *bus, const char *buf,
+ size_t count)
+{
+ unsigned long val;
+ struct pci_bus *b = NULL;
+
+ if (strict_strtoul(buf, 0, &val) < 0)
+ return -EINVAL;
+
+ if (val) {
+ mutex_lock(&pci_remove_rescan_mutex);
+ while ((b = pci_find_next_bus(b)) != NULL)
+ pci_rescan_bus(b);
+ mutex_unlock(&pci_remove_rescan_mutex);
+ }
+ return count;
+}
+
+struct bus_attribute pci_bus_attrs[] = {
+ __ATTR(rescan, (S_IWUSR|S_IWGRP), NULL, bus_rescan_store),
+ __ATTR_NULL
+};
+
+static ssize_t
+dev_rescan_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ unsigned long val;
+ struct pci_dev *pdev = to_pci_dev(dev);
+
+ if (strict_strtoul(buf, 0, &val) < 0)
+ return -EINVAL;
+
+ if (val) {
+ mutex_lock(&pci_remove_rescan_mutex);
+ pci_rescan_bus(pdev->bus);
+ mutex_unlock(&pci_remove_rescan_mutex);
+ }
+ return count;
+}
+
+static void remove_callback(struct device *dev)
+{
+ struct pci_dev *pdev = to_pci_dev(dev);
+
+ mutex_lock(&pci_remove_rescan_mutex);
+ pci_remove_bus_device(pdev);
+ mutex_unlock(&pci_remove_rescan_mutex);
+}
+
+static ssize_t
+remove_store(struct device *dev, struct device_attribute *dummy,
+ const char *buf, size_t count)
+{
+ int ret = 0;
+ unsigned long val;
+
+ if (strict_strtoul(buf, 0, &val) < 0)
+ return -EINVAL;
+
+ /* An attribute cannot be unregistered by one of its own methods,
+ * so we have to use this roundabout approach.
+ */
+ if (val)
+ ret = device_schedule_callback(dev, remove_callback);
+ if (ret)
+ count = ret;
+ return count;
+}
+#endif
+
struct device_attribute pci_dev_attrs[] = {
__ATTR_RO(resource),
__ATTR_RO(vendor),
__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),
+#ifdef CONFIG_HOTPLUG
+ __ATTR(remove, (S_IWUSR|S_IWGRP), NULL, remove_store),
+ __ATTR(rescan, (S_IWUSR|S_IWGRP), NULL, dev_rescan_store),
+#endif
__ATTR_NULL,
};
static ssize_t
+boot_vga_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct pci_dev *pdev = to_pci_dev(dev);
+
+ return sprintf(buf, "%u\n",
+ !!(pdev->resource[PCI_ROM_RESOURCE].flags &
+ IORESOURCE_ROM_SHADOW));
+}
+struct device_attribute vga_attr = __ATTR_RO(boot_vga);
+
+static ssize_t
pci_read_config(struct kobject *kobj, struct bin_attribute *bin_attr,
char *buf, loff_t off, size_t count)
{
}
static ssize_t
-pci_read_vpd(struct kobject *kobj, struct bin_attribute *bin_attr,
- char *buf, loff_t off, size_t count)
+read_vpd_attr(struct kobject *kobj, struct bin_attribute *bin_attr,
+ char *buf, loff_t off, size_t count)
{
struct pci_dev *dev =
to_pci_dev(container_of(kobj, struct device, kobj));
- int end;
- int ret;
if (off > bin_attr->size)
count = 0;
else if (count > bin_attr->size - off)
count = bin_attr->size - off;
- end = off + count;
-
- while (off < end) {
- ret = dev->vpd->ops->read(dev, off, end - off, buf);
- if (ret < 0)
- return ret;
- buf += ret;
- off += ret;
- }
- return count;
+ return pci_read_vpd(dev, off, count, buf);
}
static ssize_t
-pci_write_vpd(struct kobject *kobj, struct bin_attribute *bin_attr,
- char *buf, loff_t off, size_t count)
+write_vpd_attr(struct kobject *kobj, struct bin_attribute *bin_attr,
+ char *buf, loff_t off, size_t count)
{
struct pci_dev *dev =
to_pci_dev(container_of(kobj, struct device, kobj));
- int end;
- int ret;
if (off > bin_attr->size)
count = 0;
else if (count > bin_attr->size - off)
count = bin_attr->size - off;
- end = off + count;
-
- while (off < end) {
- ret = dev->vpd->ops->write(dev, off, end - off, buf);
- if (ret < 0)
- return ret;
- buf += ret;
- off += ret;
- }
- return count;
+ return pci_write_vpd(dev, off, count, buf);
}
#ifdef HAVE_PCI_LEGACY
/**
* pci_read_legacy_io - read byte(s) from legacy I/O port space
* @kobj: kobject corresponding to file to read from
+ * @bin_attr: struct bin_attribute for this file
* @buf: buffer to store results
* @off: offset into legacy I/O port space
* @count: number of bytes to read
/**
* pci_write_legacy_io - write byte(s) to legacy I/O port space
* @kobj: kobject corresponding to file to read from
+ * @bin_attr: struct bin_attribute for this file
* @buf: buffer containing value to be written
* @off: offset into legacy I/O port space
* @count: number of bytes to write
}
/**
+ * pci_adjust_legacy_attr - adjustment of legacy file attributes
+ * @b: bus to create files under
+ * @mmap_type: I/O port or memory
+ *
+ * Stub implementation. Can be overridden by arch if necessary.
+ */
+void __weak
+pci_adjust_legacy_attr(struct pci_bus *b, enum pci_mmap_state mmap_type)
+{
+ return;
+}
+
+/**
* pci_create_legacy_files - create legacy I/O port and memory files
* @b: bus to create files under
*
b->legacy_io->read = pci_read_legacy_io;
b->legacy_io->write = pci_write_legacy_io;
b->legacy_io->mmap = pci_mmap_legacy_io;
+ pci_adjust_legacy_attr(b, pci_mmap_io);
error = device_create_bin_file(&b->dev, b->legacy_io);
if (error)
goto legacy_io_err;
b->legacy_mem->size = 1024*1024;
b->legacy_mem->attr.mode = S_IRUSR | S_IWUSR;
b->legacy_mem->mmap = pci_mmap_legacy_mem;
+ pci_adjust_legacy_attr(b, pci_mmap_mem);
error = device_create_bin_file(&b->dev, b->legacy_mem);
if (error)
goto legacy_mem_err;
/**
* pci_remove_resource_files - cleanup resource files
- * @dev: dev to cleanup
+ * @pdev: dev to cleanup
*
- * If we created resource files for @dev, remove them from sysfs and
+ * If we created resource files for @pdev, remove them from sysfs and
* free their resources.
*/
static void
/**
* pci_create_resource_files - create resource files in sysfs for @dev
- * @dev: dev in question
+ * @pdev: dev in question
*
- * Walk the resources in @dev creating files for each resource available.
+ * Walk the resources in @pdev creating files for each resource available.
*/
static int pci_create_resource_files(struct pci_dev *pdev)
{
return 0;
}
#else /* !HAVE_PCI_MMAP */
-static inline int pci_create_resource_files(struct pci_dev *dev) { return 0; }
-static inline void pci_remove_resource_files(struct pci_dev *dev) { return; }
+int __weak pci_create_resource_files(struct pci_dev *dev) { return 0; }
+void __weak pci_remove_resource_files(struct pci_dev *dev) { return; }
#endif /* HAVE_PCI_MMAP */
/**
* pci_write_rom - used to enable access to the PCI ROM display
* @kobj: kernel object handle
+ * @bin_attr: struct bin_attribute for this file
* @buf: user input
* @off: file offset
* @count: number of byte in input
/**
* pci_read_rom - read a PCI ROM
* @kobj: kernel object handle
+ * @bin_attr: struct bin_attribute for this file
* @buf: where to put the data we read from the ROM
* @off: file offset
* @count: number of bytes to read
return -EINVAL;
rom = pci_map_rom(pdev, &size); /* size starts out as PCI window size */
- if (!rom)
- return 0;
+ if (!rom || !size)
+ return -EIO;
if (off >= size)
count = 0;
return 0;
}
+static ssize_t reset_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;
+ ssize_t result = strict_strtoul(buf, 0, &val);
+
+ if (result < 0)
+ return result;
+
+ if (val != 1)
+ return -EINVAL;
+ return pci_reset_function(pdev);
+}
+
+static struct device_attribute reset_attr = __ATTR(reset, 0200, NULL, reset_store);
+
static int pci_create_capabilities_sysfs(struct pci_dev *dev)
{
int retval;
attr->size = dev->vpd->len;
attr->attr.name = "vpd";
attr->attr.mode = S_IRUSR | S_IWUSR;
- attr->read = pci_read_vpd;
- attr->write = pci_write_vpd;
+ attr->read = read_vpd_attr;
+ attr->write = write_vpd_attr;
retval = sysfs_create_bin_file(&dev->dev.kobj, attr);
if (retval) {
kfree(dev->vpd->attr);
/* Active State Power Management */
pcie_aspm_create_sysfs_dev_files(dev);
+ if (!pci_probe_reset_function(dev)) {
+ retval = device_create_file(&dev->dev, &reset_attr);
+ if (retval)
+ goto error;
+ dev->reset_fn = 1;
+ }
return 0;
+
+error:
+ pcie_aspm_remove_sysfs_dev_files(dev);
+ if (dev->vpd && dev->vpd->attr) {
+ sysfs_remove_bin_file(&dev->dev.kobj, dev->vpd->attr);
+ kfree(dev->vpd->attr);
+ }
+
+ return retval;
}
int __must_check pci_create_sysfs_dev_files (struct pci_dev *pdev)
pdev->rom_attr = attr;
}
+ if ((pdev->class >> 8) == PCI_CLASS_DISPLAY_VGA) {
+ retval = device_create_file(&pdev->dev, &vga_attr);
+ if (retval)
+ goto err_rom_file;
+ }
+
/* add platform-specific attributes */
retval = pcibios_add_platform_entries(pdev);
if (retval)
- goto err_rom_file;
+ goto err_vga_file;
/* add sysfs entries for various capabilities */
retval = pci_create_capabilities_sysfs(pdev);
if (retval)
- goto err_rom_file;
+ goto err_vga_file;
return 0;
+err_vga_file:
+ if ((pdev->class >> 8) == PCI_CLASS_DISPLAY_VGA)
+ device_remove_file(&pdev->dev, &vga_attr);
err_rom_file:
if (rom_size) {
sysfs_remove_bin_file(&pdev->dev.kobj, pdev->rom_attr);
}
pcie_aspm_remove_sysfs_dev_files(dev);
+ if (dev->reset_fn) {
+ device_remove_file(&dev->dev, &reset_attr);
+ dev->reset_fn = 0;
+ }
}
/**
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff