#include <linux/usb/composite.h>
#include "gadget_chips.h"
-#include "configfs.h"
/*------------------------------------------------------------------------*/
#else
-static inline struct fsg_lun_opts *to_fsg_lun_opts(struct config_item *item)
-{
- return container_of(to_config_group(item), struct fsg_lun_opts, group);
-}
-
-static inline struct fsg_opts *to_fsg_opts(struct config_item *item)
-{
- return container_of(to_config_group(item), struct fsg_opts,
- func_inst.group);
-}
-
-CONFIGFS_ATTR_STRUCT(fsg_lun_opts);
-CONFIGFS_ATTR_OPS(fsg_lun_opts);
-
-static void fsg_lun_attr_release(struct config_item *item)
-{
- struct fsg_lun_opts *lun_opts;
-
- lun_opts = to_fsg_lun_opts(item);
- kfree(lun_opts);
-}
-
-static struct configfs_item_operations fsg_lun_item_ops = {
- .release = fsg_lun_attr_release,
- .show_attribute = fsg_lun_opts_attr_show,
- .store_attribute = fsg_lun_opts_attr_store,
-};
-
-static ssize_t fsg_lun_opts_file_show(struct fsg_lun_opts *opts, char *page)
-{
- struct fsg_opts *fsg_opts;
-
- fsg_opts = to_fsg_opts(opts->group.cg_item.ci_parent);
-
- return fsg_show_file(opts->lun, &fsg_opts->common->filesem, page);
-}
-
-static ssize_t fsg_lun_opts_file_store(struct fsg_lun_opts *opts,
- const char *page, size_t len)
-{
- struct fsg_opts *fsg_opts;
-
- fsg_opts = to_fsg_opts(opts->group.cg_item.ci_parent);
-
- return fsg_store_file(opts->lun, &fsg_opts->common->filesem, page, len);
-}
-
-static struct fsg_lun_opts_attribute fsg_lun_opts_file =
- __CONFIGFS_ATTR(file, S_IRUGO | S_IWUSR, fsg_lun_opts_file_show,
- fsg_lun_opts_file_store);
-
-static ssize_t fsg_lun_opts_ro_show(struct fsg_lun_opts *opts, char *page)
-{
- return fsg_show_ro(opts->lun, page);
-}
-
-static ssize_t fsg_lun_opts_ro_store(struct fsg_lun_opts *opts,
- const char *page, size_t len)
-{
- struct fsg_opts *fsg_opts;
-
- fsg_opts = to_fsg_opts(opts->group.cg_item.ci_parent);
-
- return fsg_store_ro(opts->lun, &fsg_opts->common->filesem, page, len);
-}
-
-static struct fsg_lun_opts_attribute fsg_lun_opts_ro =
- __CONFIGFS_ATTR(ro, S_IRUGO | S_IWUSR, fsg_lun_opts_ro_show,
- fsg_lun_opts_ro_store);
-
-static ssize_t fsg_lun_opts_removable_show(struct fsg_lun_opts *opts,
- char *page)
-{
- return fsg_show_removable(opts->lun, page);
-}
-
-static ssize_t fsg_lun_opts_removable_store(struct fsg_lun_opts *opts,
- const char *page, size_t len)
-{
- return fsg_store_removable(opts->lun, page, len);
-}
-
-static struct fsg_lun_opts_attribute fsg_lun_opts_removable =
- __CONFIGFS_ATTR(removable, S_IRUGO | S_IWUSR,
- fsg_lun_opts_removable_show,
- fsg_lun_opts_removable_store);
-
-static ssize_t fsg_lun_opts_cdrom_show(struct fsg_lun_opts *opts, char *page)
-{
- return fsg_show_cdrom(opts->lun, page);
-}
-
-static ssize_t fsg_lun_opts_cdrom_store(struct fsg_lun_opts *opts,
- const char *page, size_t len)
-{
- return fsg_store_cdrom(opts->lun, page, len);
-}
-
-static struct fsg_lun_opts_attribute fsg_lun_opts_cdrom =
- __CONFIGFS_ATTR(cdrom, S_IRUGO | S_IWUSR, fsg_lun_opts_cdrom_show,
- fsg_lun_opts_cdrom_store);
-
-static ssize_t fsg_lun_opts_nofua_show(struct fsg_lun_opts *opts, char *page)
-{
- return fsg_show_nofua(opts->lun, page);
-}
-
-static ssize_t fsg_lun_opts_nofua_store(struct fsg_lun_opts *opts,
- const char *page, size_t len)
-{
- return fsg_store_nofua(opts->lun, page, len);
-}
-
-static struct fsg_lun_opts_attribute fsg_lun_opts_nofua =
- __CONFIGFS_ATTR(nofua, S_IRUGO | S_IWUSR, fsg_lun_opts_nofua_show,
- fsg_lun_opts_nofua_store);
-
-static struct configfs_attribute *fsg_lun_attrs[] = {
- &fsg_lun_opts_file.attr,
- &fsg_lun_opts_ro.attr,
- &fsg_lun_opts_removable.attr,
- &fsg_lun_opts_cdrom.attr,
- &fsg_lun_opts_nofua.attr,
- NULL,
-};
-
-static struct config_item_type fsg_lun_type = {
- .ct_item_ops = &fsg_lun_item_ops,
- .ct_attrs = fsg_lun_attrs,
- .ct_owner = THIS_MODULE,
-};
-
-#define MAX_NAME_LEN 40
-
-static struct config_group *fsg_lun_make(struct config_group *group,
- const char *name)
-{
- struct fsg_lun_opts *opts;
- struct fsg_opts *fsg_opts;
- char buf[MAX_NAME_LEN];
- char lun_name[MAX_LUN_NAME_LEN];
- struct fsg_lun_config config;
- char *num_str;
- u8 num;
- int ret;
-
- ret = snprintf(buf, MAX_NAME_LEN, "%s", name);
- if (ret >= MAX_NAME_LEN)
- return ERR_PTR(-ENAMETOOLONG);
-
- num_str = strchr(buf, '.');
- if (!num_str) {
- pr_err("Unable to locate . in LUN.NUMBER\n");
- return ERR_PTR(-EINVAL);
- }
- *num_str = '\0';
- num_str++;
-
- ret = kstrtou8(num_str, 0, &num);
- if (ret)
- return ERR_PTR(ret);
-
- fsg_opts = to_fsg_opts(&group->cg_item);
- if (num >= FSG_MAX_LUNS)
- return ERR_PTR(-ENODEV);
- mutex_lock(&fsg_opts->lock);
- if (fsg_opts->refcnt || fsg_opts->common->luns[num]) {
- ret = -EBUSY;
- goto out;
- }
-
- opts = kzalloc(sizeof(*opts), GFP_KERNEL);
- if (!opts) {
- ret = -ENOMEM;
- goto out;
- }
-
- memset(&config, 0, sizeof(config));
- config.removable = true;
-
- snprintf(lun_name, MAX_LUN_NAME_LEN, "%s/%s",
- group->cg_item.ci_name, name);
- ret = fsg_common_create_lun(fsg_opts->common, &config, num, lun_name,
- NULL);
- if (ret) {
- kfree(opts);
- goto out;
- }
- opts->lun = fsg_opts->common->luns[num];
- opts->lun_id = num;
- mutex_unlock(&fsg_opts->lock);
-
- config_group_init_type_name(&opts->group, name, &fsg_lun_type);
-
- return &opts->group;
-out:
- mutex_unlock(&fsg_opts->lock);
- return ERR_PTR(ret);
-}
-
-static void fsg_lun_drop(struct config_group *group, struct config_item *item)
-{
- struct fsg_lun_opts *lun_opts;
- struct fsg_opts *fsg_opts;
-
- lun_opts = to_fsg_lun_opts(item);
- fsg_opts = to_fsg_opts(&group->cg_item);
-
- mutex_lock(&fsg_opts->lock);
- if (fsg_opts->refcnt) {
- struct config_item *gadget;
-
- gadget = group->cg_item.ci_parent->ci_parent;
- unregister_gadget_item(gadget);
- }
-
- fsg_common_remove_lun(lun_opts->lun, fsg_opts->common->sysfs);
- fsg_opts->common->luns[lun_opts->lun_id] = NULL;
- lun_opts->lun_id = 0;
- mutex_unlock(&fsg_opts->lock);
-
- config_item_put(item);
-}
-
-CONFIGFS_ATTR_STRUCT(fsg_opts);
-CONFIGFS_ATTR_OPS(fsg_opts);
-
-static void fsg_attr_release(struct config_item *item)
-{
- struct fsg_opts *opts = to_fsg_opts(item);
-
- usb_put_function_instance(&opts->func_inst);
-}
-
-static struct configfs_item_operations fsg_item_ops = {
- .release = fsg_attr_release,
- .show_attribute = fsg_opts_attr_show,
- .store_attribute = fsg_opts_attr_store,
-};
-
-static ssize_t fsg_opts_stall_show(struct fsg_opts *opts, char *page)
-{
- int result;
-
- mutex_lock(&opts->lock);
- result = sprintf(page, "%d", opts->common->can_stall);
- mutex_unlock(&opts->lock);
-
- return result;
-}
-
-static ssize_t fsg_opts_stall_store(struct fsg_opts *opts, const char *page,
- size_t len)
-{
- int ret;
- u8 num;
-
- mutex_lock(&opts->lock);
- if (opts->refcnt) {
- ret = -EBUSY;
- goto end;
- }
- ret = kstrtou8(page, 0, &num);
- if (ret)
- goto end;
-
- opts->common->can_stall = num != 0;
- ret = len;
-
-end:
- mutex_unlock(&opts->lock);
- return ret;
-}
-
-static struct fsg_opts_attribute fsg_opts_stall =
- __CONFIGFS_ATTR(stall, S_IRUGO | S_IWUSR, fsg_opts_stall_show,
- fsg_opts_stall_store);
-
-#ifdef CONFIG_USB_GADGET_DEBUG_FILES
-static ssize_t fsg_opts_num_buffers_show(struct fsg_opts *opts, char *page)
-{
- int result;
-
- mutex_lock(&opts->lock);
- result = sprintf(page, "%d", opts->common->fsg_num_buffers);
- mutex_unlock(&opts->lock);
-
- return result;
-}
-
-static ssize_t fsg_opts_num_buffers_store(struct fsg_opts *opts,
- const char *page, size_t len)
-{
- int ret;
- u8 num;
-
- mutex_lock(&opts->lock);
- if (opts->refcnt) {
- ret = -EBUSY;
- goto end;
- }
- ret = kstrtou8(page, 0, &num);
- if (ret)
- goto end;
-
- ret = fsg_num_buffers_validate(num);
- if (ret)
- goto end;
-
- fsg_common_set_num_buffers(opts->common, num);
- ret = len;
-
-end:
- mutex_unlock(&opts->lock);
- return ret;
-}
-
-static struct fsg_opts_attribute fsg_opts_num_buffers =
- __CONFIGFS_ATTR(num_buffers, S_IRUGO | S_IWUSR,
- fsg_opts_num_buffers_show,
- fsg_opts_num_buffers_store);
-
-#endif
-
-static struct configfs_attribute *fsg_attrs[] = {
- &fsg_opts_stall.attr,
-#ifdef CONFIG_USB_GADGET_DEBUG_FILES
- &fsg_opts_num_buffers.attr,
-#endif
- NULL,
-};
-
-static struct configfs_group_operations fsg_group_ops = {
- .make_group = fsg_lun_make,
- .drop_item = fsg_lun_drop,
-};
-
-static struct config_item_type fsg_func_type = {
- .ct_item_ops = &fsg_item_ops,
- .ct_group_ops = &fsg_group_ops,
- .ct_attrs = fsg_attrs,
- .ct_owner = THIS_MODULE,
-};
-
static void fsg_free_inst(struct usb_function_instance *fi)
{
struct fsg_opts *opts;
static struct usb_function_instance *fsg_alloc_inst(void)
{
struct fsg_opts *opts;
- struct fsg_lun_config config;
int ret;
opts = kzalloc(sizeof(*opts), GFP_KERNEL);
if (!opts)
return ERR_PTR(-ENOMEM);
- mutex_init(&opts->lock);
opts->func_inst.free_func_inst = fsg_free_inst;
opts->common = fsg_common_setup(opts->common, false);
if (IS_ERR(opts->common)) {
pr_info(FSG_DRIVER_DESC ", version: " FSG_DRIVER_VERSION "\n");
- memset(&config, 0, sizeof(config));
- config.removable = true;
- ret = fsg_common_create_lun(opts->common, &config, 0, "lun.0",
- (const char **)&opts->func_inst.group.cg_item.ci_name);
- opts->lun0.lun = opts->common->luns[0];
- opts->lun0.lun_id = 0;
- config_group_init_type_name(&opts->lun0.group, "lun.0", &fsg_lun_type);
- opts->default_groups[0] = &opts->lun0.group;
- opts->func_inst.group.default_groups = opts->default_groups;
-
- config_group_init_type_name(&opts->func_inst.group, "", &fsg_func_type);
-
return &opts->func_inst;
release_luns:
static void fsg_free(struct usb_function *f)
{
struct fsg_dev *fsg;
- struct fsg_opts *opts;
fsg = container_of(f, struct fsg_dev, function);
- opts = container_of(f->fi, struct fsg_opts, func_inst);
-
- mutex_lock(&opts->lock);
- opts->refcnt--;
- mutex_unlock(&opts->lock);
kfree(fsg);
}
if (unlikely(!fsg))
return ERR_PTR(-ENOMEM);
- mutex_lock(&opts->lock);
- opts->refcnt++;
- mutex_unlock(&opts->lock);
fsg->function.name = FSG_DRIVER_DESC;
fsg->function.bind = fsg_bind;
fsg->function.unbind = fsg_unbind;
projects / platform / kernel / linux-3.10.git / commitdiff