MODULE_DESCRIPTION("Multi purpose firmware loading support");
MODULE_LICENSE("GPL");
+/* Builtin firmware support */
+
+#ifdef CONFIG_FW_LOADER
+
+extern struct builtin_fw __start_builtin_fw[];
+extern struct builtin_fw __end_builtin_fw[];
+
+static bool fw_get_builtin_firmware(struct firmware *fw, const char *name)
+{
+ struct builtin_fw *b_fw;
+
+ for (b_fw = __start_builtin_fw; b_fw != __end_builtin_fw; b_fw++) {
+ if (strcmp(name, b_fw->name) == 0) {
+ fw->size = b_fw->size;
+ fw->data = b_fw->data;
+ return true;
+ }
+ }
+
+ return false;
+}
+
+static bool fw_is_builtin_firmware(const struct firmware *fw)
+{
+ struct builtin_fw *b_fw;
+
+ for (b_fw = __start_builtin_fw; b_fw != __end_builtin_fw; b_fw++)
+ if (fw->data == b_fw->data)
+ return true;
+
+ return false;
+}
+
+#else /* Module case - no builtin firmware support */
+
+static inline bool fw_get_builtin_firmware(struct firmware *fw, const char *name)
+{
+ return false;
+}
+
+static inline bool fw_is_builtin_firmware(const struct firmware *fw)
+{
+ return false;
+}
+#endif
+
enum {
FW_STATUS_LOADING,
FW_STATUS_DONE,
static DEFINE_MUTEX(fw_lock);
struct firmware_priv {
- char *fw_id;
struct completion completion;
struct bin_attribute attr_data;
struct firmware *fw;
struct page **pages;
int nr_pages;
int page_array_size;
- const char *vdata;
struct timer_list timeout;
+ bool nowait;
+ char fw_id[];
};
-#ifdef CONFIG_FW_LOADER
-extern struct builtin_fw __start_builtin_fw[];
-extern struct builtin_fw __end_builtin_fw[];
-#else /* Module case. Avoid ifdefs later; it'll all optimise out */
-static struct builtin_fw *__start_builtin_fw;
-static struct builtin_fw *__end_builtin_fw;
-#endif
-
static void
fw_load_abort(struct firmware_priv *fw_priv)
{
return count;
}
-static CLASS_ATTR(timeout, 0644, firmware_timeout_show, firmware_timeout_store);
+static struct class_attribute firmware_class_attrs[] = {
+ __ATTR(timeout, S_IWUSR | S_IRUGO,
+ firmware_timeout_show, firmware_timeout_store),
+ __ATTR_NULL
+};
+
+static void fw_dev_release(struct device *dev)
+{
+ struct firmware_priv *fw_priv = dev_get_drvdata(dev);
+ int i;
+
+ for (i = 0; i < fw_priv->nr_pages; i++)
+ __free_page(fw_priv->pages[i]);
+ kfree(fw_priv->pages);
+ kfree(fw_priv);
+ kfree(dev);
-static void fw_dev_release(struct device *dev);
+ module_put(THIS_MODULE);
+}
static int firmware_uevent(struct device *dev, struct kobj_uevent_env *env)
{
return -ENOMEM;
if (add_uevent_var(env, "TIMEOUT=%i", loading_timeout))
return -ENOMEM;
+ if (add_uevent_var(env, "ASYNC=%d", fw_priv->nowait))
+ return -ENOMEM;
return 0;
}
static struct class firmware_class = {
.name = "firmware",
+ .class_attrs = firmware_class_attrs,
.dev_uevent = firmware_uevent,
.dev_release = fw_dev_release,
};
return sprintf(buf, "%d\n", loading);
}
+static void firmware_free_data(const struct firmware *fw)
+{
+ int i;
+ vunmap(fw->data);
+ if (fw->pages) {
+ for (i = 0; i < PFN_UP(fw->size); i++)
+ __free_page(fw->pages[i]);
+ kfree(fw->pages);
+ }
+}
+
/* Some architectures don't have PAGE_KERNEL_RO */
#ifndef PAGE_KERNEL_RO
#define PAGE_KERNEL_RO PAGE_KERNEL
mutex_unlock(&fw_lock);
break;
}
- vfree(fw_priv->fw->data);
- fw_priv->fw->data = NULL;
+ firmware_free_data(fw_priv->fw);
+ memset(fw_priv->fw, 0, sizeof(struct firmware));
+ /* If the pages are not owned by 'struct firmware' */
for (i = 0; i < fw_priv->nr_pages; i++)
__free_page(fw_priv->pages[i]);
kfree(fw_priv->pages);
fw_priv->pages = NULL;
fw_priv->page_array_size = 0;
fw_priv->nr_pages = 0;
- fw_priv->fw->size = 0;
set_bit(FW_STATUS_LOADING, &fw_priv->status);
mutex_unlock(&fw_lock);
break;
case 0:
if (test_bit(FW_STATUS_LOADING, &fw_priv->status)) {
- vfree(fw_priv->fw->data);
+ vunmap(fw_priv->fw->data);
fw_priv->fw->data = vmap(fw_priv->pages,
fw_priv->nr_pages,
0, PAGE_KERNEL_RO);
dev_err(dev, "%s: vmap() failed\n", __func__);
goto err;
}
- /* Pages will be freed by vfree() */
+ /* Pages are now owned by 'struct firmware' */
+ fw_priv->fw->pages = fw_priv->pages;
+ fw_priv->pages = NULL;
+
fw_priv->page_array_size = 0;
fw_priv->nr_pages = 0;
complete(&fw_priv->completion);
static DEVICE_ATTR(loading, 0644, firmware_loading_show, firmware_loading_store);
static ssize_t
-firmware_data_read(struct kobject *kobj, struct bin_attribute *bin_attr,
- char *buffer, loff_t offset, size_t count)
+firmware_data_read(struct file *filp, struct kobject *kobj,
+ struct bin_attribute *bin_attr, char *buffer, loff_t offset,
+ size_t count)
{
struct device *dev = to_dev(kobj);
struct firmware_priv *fw_priv = dev_get_drvdata(dev);
/**
* firmware_data_write - write method for firmware
+ * @filp: open sysfs file
* @kobj: kobject for the device
* @bin_attr: bin_attr structure
* @buffer: buffer being written
* the driver as a firmware image.
**/
static ssize_t
-firmware_data_write(struct kobject *kobj, struct bin_attribute *bin_attr,
- char *buffer, loff_t offset, size_t count)
+firmware_data_write(struct file* filp, struct kobject *kobj,
+ struct bin_attribute *bin_attr, char *buffer,
+ loff_t offset, size_t count)
{
struct device *dev = to_dev(kobj);
struct firmware_priv *fw_priv = dev_get_drvdata(dev);
.write = firmware_data_write,
};
-static void fw_dev_release(struct device *dev)
-{
- struct firmware_priv *fw_priv = dev_get_drvdata(dev);
- int i;
-
- for (i = 0; i < fw_priv->nr_pages; i++)
- __free_page(fw_priv->pages[i]);
- kfree(fw_priv->pages);
- kfree(fw_priv->fw_id);
- kfree(fw_priv);
- kfree(dev);
-
- module_put(THIS_MODULE);
-}
-
static void
firmware_class_timeout(u_long data)
{
struct device *device)
{
int retval;
- struct firmware_priv *fw_priv = kzalloc(sizeof(*fw_priv),
- GFP_KERNEL);
+ struct firmware_priv *fw_priv =
+ kzalloc(sizeof(*fw_priv) + strlen(fw_name) + 1 , GFP_KERNEL);
struct device *f_dev = kzalloc(sizeof(*f_dev), GFP_KERNEL);
*dev_p = NULL;
goto error_kfree;
}
+ strcpy(fw_priv->fw_id, fw_name);
init_completion(&fw_priv->completion);
fw_priv->attr_data = firmware_attr_data_tmpl;
- fw_priv->fw_id = kstrdup(fw_name, GFP_KERNEL);
- if (!fw_priv->fw_id) {
- dev_err(device, "%s: Firmware name allocation failed\n",
- __func__);
- retval = -ENOMEM;
- goto error_kfree;
- }
-
fw_priv->timeout.function = firmware_class_timeout;
fw_priv->timeout.data = (u_long) fw_priv;
init_timer(&fw_priv->timeout);
static int fw_setup_device(struct firmware *fw, struct device **dev_p,
const char *fw_name, struct device *device,
- int uevent)
+ int uevent, bool nowait)
{
struct device *f_dev;
struct firmware_priv *fw_priv;
fw_priv = dev_get_drvdata(f_dev);
+ fw_priv->nowait = nowait;
+
fw_priv->fw = fw;
sysfs_bin_attr_init(&fw_priv->attr_data);
retval = sysfs_create_bin_file(&f_dev->kobj, &fw_priv->attr_data);
static int
_request_firmware(const struct firmware **firmware_p, const char *name,
- struct device *device, int uevent)
+ struct device *device, int uevent, bool nowait)
{
struct device *f_dev;
struct firmware_priv *fw_priv;
struct firmware *firmware;
- struct builtin_fw *builtin;
int retval;
if (!firmware_p)
goto out;
}
- for (builtin = __start_builtin_fw; builtin != __end_builtin_fw;
- builtin++) {
- if (strcmp(name, builtin->name))
- continue;
- dev_info(device, "firmware: using built-in firmware %s\n",
- name);
- firmware->size = builtin->size;
- firmware->data = builtin->data;
+ if (fw_get_builtin_firmware(firmware, name)) {
+ dev_dbg(device, "firmware: using built-in firmware %s\n", name);
return 0;
}
if (uevent)
- dev_info(device, "firmware: requesting %s\n", name);
+ dev_dbg(device, "firmware: requesting %s\n", name);
- retval = fw_setup_device(firmware, &f_dev, name, device, uevent);
+ retval = fw_setup_device(firmware, &f_dev, name, device,
+ uevent, nowait);
if (retval)
goto error_kfree_fw;
struct device *device)
{
int uevent = 1;
- return _request_firmware(firmware_p, name, device, uevent);
+ return _request_firmware(firmware_p, name, device, uevent, false);
}
/**
* release_firmware: - release the resource associated with a firmware image
* @fw: firmware resource to release
**/
-void
-release_firmware(const struct firmware *fw)
+void release_firmware(const struct firmware *fw)
{
- struct builtin_fw *builtin;
-
if (fw) {
- for (builtin = __start_builtin_fw; builtin != __end_builtin_fw;
- builtin++) {
- if (fw->data == builtin->data)
- goto free_fw;
- }
- vfree(fw->data);
- free_fw:
+ if (!fw_is_builtin_firmware(fw))
+ firmware_free_data(fw);
kfree(fw);
}
}
return 0;
}
ret = _request_firmware(&fw, fw_work->name, fw_work->device,
- fw_work->uevent);
+ fw_work->uevent, true);
fw_work->cont(fw, fw_work->context);
return 0;
}
-static int __init
-firmware_class_init(void)
+static int __init firmware_class_init(void)
{
- int error;
- error = class_register(&firmware_class);
- if (error) {
- printk(KERN_ERR "%s: class_register failed\n", __func__);
- return error;
- }
- error = class_create_file(&firmware_class, &class_attr_timeout);
- if (error) {
- printk(KERN_ERR "%s: class_create_file failed\n",
- __func__);
- class_unregister(&firmware_class);
- }
- return error;
-
+ return class_register(&firmware_class);
}
-static void __exit
-firmware_class_exit(void)
+
+static void __exit firmware_class_exit(void)
{
class_unregister(&firmware_class);
}
git.openpandora.org / pandora-kernel.git / blobdiff