438 lines
11 KiB
C
438 lines
11 KiB
C
#include <linux/module.h>
|
|
#include <linux/utsname.h>
|
|
|
|
|
|
/*
|
|
* kbuild is not very cooperative with respect to linking separately
|
|
* compiled library objects into one module. So for now we won't use
|
|
* separate compilation ... ensuring init/exit sections work to shrink
|
|
* the runtime footprint, and giving us at least some parts of what
|
|
* a "gcc --combine ... part1.c part2.c part3.c ... " build would.
|
|
*/
|
|
|
|
#include "composite.c"
|
|
#include "usbstring.c"
|
|
#include "config.c"
|
|
#include "epautoconf.c"
|
|
|
|
#if defined CONFIG_USB_FUNCTIONFS_ETH || defined CONFIG_USB_FUNCTIONFS_RNDIS
|
|
# if defined USB_ETH_RNDIS
|
|
# undef USB_ETH_RNDIS
|
|
# endif
|
|
# ifdef CONFIG_USB_FUNCTIONFS_RNDIS
|
|
# define USB_ETH_RNDIS y
|
|
# endif
|
|
|
|
# include "f_ecm.c"
|
|
# include "f_subset.c"
|
|
# ifdef USB_ETH_RNDIS
|
|
# include "f_rndis.c"
|
|
# include "rndis.c"
|
|
# endif
|
|
# include "u_ether.c"
|
|
|
|
static u8 gfs_hostaddr[ETH_ALEN];
|
|
#else
|
|
# if !defined CONFIG_USB_FUNCTIONFS_GENERIC
|
|
# define CONFIG_USB_FUNCTIONFS_GENERIC
|
|
# endif
|
|
# define gether_cleanup() do { } while (0)
|
|
# define gether_setup(gadget, hostaddr) ((int)0)
|
|
#endif
|
|
|
|
#include "f_fs.c"
|
|
|
|
|
|
#define DRIVER_NAME "g_ffs"
|
|
#define DRIVER_DESC "USB Function Filesystem"
|
|
#define DRIVER_VERSION "24 Aug 2004"
|
|
|
|
MODULE_DESCRIPTION(DRIVER_DESC);
|
|
MODULE_AUTHOR("Michal Nazarewicz");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
|
|
static unsigned short gfs_vendor_id = 0x0525; /* XXX NetChip */
|
|
static unsigned short gfs_product_id = 0xa4ac; /* XXX */
|
|
|
|
static struct usb_device_descriptor gfs_dev_desc = {
|
|
.bLength = sizeof gfs_dev_desc,
|
|
.bDescriptorType = USB_DT_DEVICE,
|
|
|
|
.bcdUSB = cpu_to_le16(0x0200),
|
|
.bDeviceClass = USB_CLASS_PER_INTERFACE,
|
|
|
|
/* Vendor and product id can be overridden by module parameters. */
|
|
/* .idVendor = cpu_to_le16(gfs_vendor_id), */
|
|
/* .idProduct = cpu_to_le16(gfs_product_id), */
|
|
/* .bcdDevice = f(hardware) */
|
|
/* .iManufacturer = DYNAMIC */
|
|
/* .iProduct = DYNAMIC */
|
|
/* NO SERIAL NUMBER */
|
|
.bNumConfigurations = 1,
|
|
};
|
|
|
|
#define GFS_MODULE_PARAM_DESC(name, field) \
|
|
MODULE_PARM_DESC(name, "Value of the " #field " field of the device descriptor sent to the host. Takes effect only prior to the user-space driver registering to the FunctionFS.")
|
|
|
|
module_param_named(usb_class, gfs_dev_desc.bDeviceClass, byte, 0644);
|
|
GFS_MODULE_PARAM_DESC(usb_class, bDeviceClass);
|
|
module_param_named(usb_subclass, gfs_dev_desc.bDeviceSubClass, byte, 0644);
|
|
GFS_MODULE_PARAM_DESC(usb_subclass, bDeviceSubClass);
|
|
module_param_named(usb_protocol, gfs_dev_desc.bDeviceProtocol, byte, 0644);
|
|
GFS_MODULE_PARAM_DESC(usb_protocol, bDeviceProtocol);
|
|
module_param_named(usb_vendor, gfs_vendor_id, ushort, 0644);
|
|
GFS_MODULE_PARAM_DESC(usb_vendor, idVendor);
|
|
module_param_named(usb_product, gfs_product_id, ushort, 0644);
|
|
GFS_MODULE_PARAM_DESC(usb_product, idProduct);
|
|
|
|
|
|
|
|
static const struct usb_descriptor_header *gfs_otg_desc[] = {
|
|
(const struct usb_descriptor_header *)
|
|
&(const struct usb_otg_descriptor) {
|
|
.bLength = sizeof(struct usb_otg_descriptor),
|
|
.bDescriptorType = USB_DT_OTG,
|
|
|
|
/* REVISIT SRP-only hardware is possible, although
|
|
* it would not be called "OTG" ... */
|
|
.bmAttributes = USB_OTG_SRP | USB_OTG_HNP,
|
|
},
|
|
|
|
NULL
|
|
};
|
|
|
|
/* string IDs are assigned dynamically */
|
|
|
|
enum {
|
|
GFS_STRING_MANUFACTURER_IDX,
|
|
GFS_STRING_PRODUCT_IDX,
|
|
#ifdef CONFIG_USB_FUNCTIONFS_RNDIS
|
|
GFS_STRING_RNDIS_CONFIG_IDX,
|
|
#endif
|
|
#ifdef CONFIG_USB_FUNCTIONFS_ETH
|
|
GFS_STRING_ECM_CONFIG_IDX,
|
|
#endif
|
|
#ifdef CONFIG_USB_FUNCTIONFS_GENERIC
|
|
GFS_STRING_GENERIC_CONFIG_IDX,
|
|
#endif
|
|
};
|
|
|
|
static char gfs_manufacturer[50];
|
|
static const char gfs_driver_desc[] = DRIVER_DESC;
|
|
static const char gfs_short_name[] = DRIVER_NAME;
|
|
|
|
static struct usb_string gfs_strings[] = {
|
|
[GFS_STRING_MANUFACTURER_IDX].s = gfs_manufacturer,
|
|
[GFS_STRING_PRODUCT_IDX].s = gfs_driver_desc,
|
|
#ifdef CONFIG_USB_FUNCTIONFS_RNDIS
|
|
[GFS_STRING_RNDIS_CONFIG_IDX].s = "FunctionFS + RNDIS",
|
|
#endif
|
|
#ifdef CONFIG_USB_FUNCTIONFS_ETH
|
|
[GFS_STRING_ECM_CONFIG_IDX].s = "FunctionFS + ECM",
|
|
#endif
|
|
#ifdef CONFIG_USB_FUNCTIONFS_GENERIC
|
|
[GFS_STRING_GENERIC_CONFIG_IDX].s = "FunctionFS",
|
|
#endif
|
|
{ } /* end of list */
|
|
};
|
|
|
|
static struct usb_gadget_strings *gfs_dev_strings[] = {
|
|
&(struct usb_gadget_strings) {
|
|
.language = 0x0409, /* en-us */
|
|
.strings = gfs_strings,
|
|
},
|
|
NULL,
|
|
};
|
|
|
|
|
|
#ifdef CONFIG_USB_FUNCTIONFS_RNDIS
|
|
static int gfs_do_rndis_config(struct usb_configuration *c);
|
|
|
|
static struct usb_configuration gfs_rndis_config_driver = {
|
|
.label = "FunctionFS + RNDIS",
|
|
.bind = gfs_do_rndis_config,
|
|
.bConfigurationValue = 1,
|
|
/* .iConfiguration = DYNAMIC */
|
|
.bmAttributes = USB_CONFIG_ATT_SELFPOWER,
|
|
};
|
|
# define gfs_add_rndis_config(cdev) \
|
|
usb_add_config(cdev, &gfs_rndis_config_driver)
|
|
#else
|
|
# define gfs_add_rndis_config(cdev) 0
|
|
#endif
|
|
|
|
|
|
#ifdef CONFIG_USB_FUNCTIONFS_ETH
|
|
static int gfs_do_ecm_config(struct usb_configuration *c);
|
|
|
|
static struct usb_configuration gfs_ecm_config_driver = {
|
|
.label = "FunctionFS + ECM",
|
|
.bind = gfs_do_ecm_config,
|
|
.bConfigurationValue = 1,
|
|
/* .iConfiguration = DYNAMIC */
|
|
.bmAttributes = USB_CONFIG_ATT_SELFPOWER,
|
|
};
|
|
# define gfs_add_ecm_config(cdev) \
|
|
usb_add_config(cdev, &gfs_ecm_config_driver)
|
|
#else
|
|
# define gfs_add_ecm_config(cdev) 0
|
|
#endif
|
|
|
|
|
|
#ifdef CONFIG_USB_FUNCTIONFS_GENERIC
|
|
static int gfs_do_generic_config(struct usb_configuration *c);
|
|
|
|
static struct usb_configuration gfs_generic_config_driver = {
|
|
.label = "FunctionFS",
|
|
.bind = gfs_do_generic_config,
|
|
.bConfigurationValue = 2,
|
|
/* .iConfiguration = DYNAMIC */
|
|
.bmAttributes = USB_CONFIG_ATT_SELFPOWER,
|
|
};
|
|
# define gfs_add_generic_config(cdev) \
|
|
usb_add_config(cdev, &gfs_generic_config_driver)
|
|
#else
|
|
# define gfs_add_generic_config(cdev) 0
|
|
#endif
|
|
|
|
|
|
static int gfs_bind(struct usb_composite_dev *cdev);
|
|
static int gfs_unbind(struct usb_composite_dev *cdev);
|
|
|
|
static struct usb_composite_driver gfs_driver = {
|
|
.name = gfs_short_name,
|
|
.dev = &gfs_dev_desc,
|
|
.strings = gfs_dev_strings,
|
|
.bind = gfs_bind,
|
|
.unbind = gfs_unbind,
|
|
};
|
|
|
|
|
|
static struct ffs_data *gfs_ffs_data;
|
|
static unsigned long gfs_registered;
|
|
|
|
|
|
static int gfs_init(void)
|
|
{
|
|
ENTER();
|
|
|
|
return functionfs_init();
|
|
}
|
|
module_init(gfs_init);
|
|
|
|
static void gfs_exit(void)
|
|
{
|
|
ENTER();
|
|
|
|
if (test_and_clear_bit(0, &gfs_registered))
|
|
usb_composite_unregister(&gfs_driver);
|
|
|
|
functionfs_cleanup();
|
|
}
|
|
module_exit(gfs_exit);
|
|
|
|
|
|
static int functionfs_ready_callback(struct ffs_data *ffs)
|
|
{
|
|
int ret;
|
|
|
|
ENTER();
|
|
|
|
if (WARN_ON(test_and_set_bit(0, &gfs_registered)))
|
|
return -EBUSY;
|
|
|
|
gfs_ffs_data = ffs;
|
|
ret = usb_composite_register(&gfs_driver);
|
|
if (unlikely(ret < 0))
|
|
clear_bit(0, &gfs_registered);
|
|
return ret;
|
|
}
|
|
|
|
static void functionfs_closed_callback(struct ffs_data *ffs)
|
|
{
|
|
ENTER();
|
|
|
|
if (test_and_clear_bit(0, &gfs_registered))
|
|
usb_composite_unregister(&gfs_driver);
|
|
}
|
|
|
|
|
|
static int functionfs_check_dev_callback(const char *dev_name)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
static int gfs_bind(struct usb_composite_dev *cdev)
|
|
{
|
|
int ret;
|
|
|
|
ENTER();
|
|
|
|
if (WARN_ON(!gfs_ffs_data))
|
|
return -ENODEV;
|
|
|
|
ret = gether_setup(cdev->gadget, gfs_hostaddr);
|
|
if (unlikely(ret < 0))
|
|
goto error_quick;
|
|
|
|
gfs_dev_desc.idVendor = cpu_to_le16(gfs_vendor_id);
|
|
gfs_dev_desc.idProduct = cpu_to_le16(gfs_product_id);
|
|
|
|
snprintf(gfs_manufacturer, sizeof gfs_manufacturer, "%s %s with %s",
|
|
init_utsname()->sysname, init_utsname()->release,
|
|
cdev->gadget->name);
|
|
ret = usb_string_id(cdev);
|
|
if (unlikely(ret < 0))
|
|
goto error;
|
|
gfs_strings[GFS_STRING_MANUFACTURER_IDX].id = ret;
|
|
gfs_dev_desc.iManufacturer = ret;
|
|
|
|
ret = usb_string_id(cdev);
|
|
if (unlikely(ret < 0))
|
|
goto error;
|
|
gfs_strings[GFS_STRING_PRODUCT_IDX].id = ret;
|
|
gfs_dev_desc.iProduct = ret;
|
|
|
|
#ifdef CONFIG_USB_FUNCTIONFS_RNDIS
|
|
ret = usb_string_id(cdev);
|
|
if (unlikely(ret < 0))
|
|
goto error;
|
|
gfs_strings[GFS_STRING_RNDIS_CONFIG_IDX].id = ret;
|
|
gfs_rndis_config_driver.iConfiguration = ret;
|
|
#endif
|
|
|
|
#ifdef CONFIG_USB_FUNCTIONFS_ETH
|
|
ret = usb_string_id(cdev);
|
|
if (unlikely(ret < 0))
|
|
goto error;
|
|
gfs_strings[GFS_STRING_ECM_CONFIG_IDX].id = ret;
|
|
gfs_ecm_config_driver.iConfiguration = ret;
|
|
#endif
|
|
|
|
#ifdef CONFIG_USB_FUNCTIONFS_GENERIC
|
|
ret = usb_string_id(cdev);
|
|
if (unlikely(ret < 0))
|
|
goto error;
|
|
gfs_strings[GFS_STRING_GENERIC_CONFIG_IDX].id = ret;
|
|
gfs_generic_config_driver.iConfiguration = ret;
|
|
#endif
|
|
|
|
ret = functionfs_bind(gfs_ffs_data, cdev);
|
|
if (unlikely(ret < 0))
|
|
goto error;
|
|
|
|
ret = gfs_add_rndis_config(cdev);
|
|
if (unlikely(ret < 0))
|
|
goto error_unbind;
|
|
|
|
ret = gfs_add_ecm_config(cdev);
|
|
if (unlikely(ret < 0))
|
|
goto error_unbind;
|
|
|
|
ret = gfs_add_generic_config(cdev);
|
|
if (unlikely(ret < 0))
|
|
goto error_unbind;
|
|
|
|
return 0;
|
|
|
|
error_unbind:
|
|
functionfs_unbind(gfs_ffs_data);
|
|
error:
|
|
gether_cleanup();
|
|
error_quick:
|
|
gfs_ffs_data = NULL;
|
|
return ret;
|
|
}
|
|
|
|
static int gfs_unbind(struct usb_composite_dev *cdev)
|
|
{
|
|
ENTER();
|
|
|
|
/* We may have been called in an error recovery frem
|
|
* composite_bind() after gfs_unbind() failure so we need to
|
|
* check if gfs_ffs_data is not NULL since gfs_bind() handles
|
|
* all error recovery itself. I'd rather we werent called
|
|
* from composite on orror recovery, but what you're gonna
|
|
* do...? */
|
|
|
|
if (gfs_ffs_data) {
|
|
gether_cleanup();
|
|
functionfs_unbind(gfs_ffs_data);
|
|
gfs_ffs_data = NULL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int __gfs_do_config(struct usb_configuration *c,
|
|
int (*eth)(struct usb_configuration *c, u8 *ethaddr),
|
|
u8 *ethaddr)
|
|
{
|
|
int ret;
|
|
|
|
if (WARN_ON(!gfs_ffs_data))
|
|
return -ENODEV;
|
|
|
|
if (gadget_is_otg(c->cdev->gadget)) {
|
|
c->descriptors = gfs_otg_desc;
|
|
c->bmAttributes |= USB_CONFIG_ATT_WAKEUP;
|
|
}
|
|
|
|
if (eth) {
|
|
ret = eth(c, ethaddr);
|
|
if (unlikely(ret < 0))
|
|
return ret;
|
|
}
|
|
|
|
ret = functionfs_add(c->cdev, c, gfs_ffs_data);
|
|
if (unlikely(ret < 0))
|
|
return ret;
|
|
|
|
/* After previous do_configs there may be some invalid
|
|
* pointers in c->interface array. This happens every time
|
|
* a user space function with fewer interfaces than a user
|
|
* space function that was run before the new one is run. The
|
|
* compasit's set_config() assumes that if there is no more
|
|
* then MAX_CONFIG_INTERFACES interfaces in a configuration
|
|
* then there is a NULL pointer after the last interface in
|
|
* c->interface array. We need to make sure this is true. */
|
|
if (c->next_interface_id < ARRAY_SIZE(c->interface))
|
|
c->interface[c->next_interface_id] = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_USB_FUNCTIONFS_RNDIS
|
|
static int gfs_do_rndis_config(struct usb_configuration *c)
|
|
{
|
|
ENTER();
|
|
|
|
return __gfs_do_config(c, rndis_bind_config, gfs_hostaddr);
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_USB_FUNCTIONFS_ETH
|
|
static int gfs_do_ecm_config(struct usb_configuration *c)
|
|
{
|
|
ENTER();
|
|
|
|
return __gfs_do_config(c,
|
|
can_support_ecm(c->cdev->gadget)
|
|
? ecm_bind_config : geth_bind_config,
|
|
gfs_hostaddr);
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_USB_FUNCTIONFS_GENERIC
|
|
static int gfs_do_generic_config(struct usb_configuration *c)
|
|
{
|
|
ENTER();
|
|
|
|
return __gfs_do_config(c, NULL, NULL);
|
|
}
|
|
#endif
|