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mirror of https://github.com/trezor/trezor-firmware.git synced 2024-12-25 07:48:10 +00:00
trezor-firmware/embed/extmod/modtrezorio/modtrezorio-usb.h

226 lines
7.6 KiB
C

void mp_hal_set_vcp_iface(int iface_num);
enum {
USB_CLOSED = 0,
USB_OPENED = 1,
};
/// class USB:
/// '''
/// USB device configuration.
/// '''
typedef struct _mp_obj_USB_t {
mp_obj_base_t base;
mp_obj_list_t ifaces;
usb_dev_info_t info;
mp_int_t state;
} mp_obj_USB_t;
static const char *get_0str(mp_obj_t o, size_t min_len, size_t max_len) {
size_t len;
const char *s = mp_obj_str_get_data(o, &len);
if ((len >= min_len) && (len <= max_len)) {
if (len == 0 && s == NULL) {
return "";
} else {
return s;
}
} else {
return NULL;
}
}
/// def __init__(self,
/// vendor_id: int,
/// product_id: int,
/// release_num: int,
/// manufacturer: str='',
/// product: str='',
/// serial_number: str='',
/// interface: str='') -> None:
/// '''
/// '''
STATIC mp_obj_t mod_trezorio_USB_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args) {
STATIC const mp_arg_t allowed_args[] = {
{ MP_QSTR_vendor_id, MP_ARG_REQUIRED | MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 0} },
{ MP_QSTR_product_id, MP_ARG_REQUIRED | MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 0} },
{ MP_QSTR_release_num, MP_ARG_REQUIRED | MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 0} },
{ MP_QSTR_manufacturer, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = mp_const_empty_bytes} },
{ MP_QSTR_product, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = mp_const_empty_bytes} },
{ MP_QSTR_serial_number, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = mp_const_empty_bytes} },
{ MP_QSTR_interface, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = mp_const_empty_bytes} },
};
mp_arg_val_t vals[MP_ARRAY_SIZE(allowed_args)];
mp_arg_parse_all_kw_array(n_args, n_kw, args, MP_ARRAY_SIZE(allowed_args), allowed_args, vals);
const mp_int_t vendor_id = vals[0].u_int;
const mp_int_t product_id = vals[1].u_int;
const mp_int_t release_num = vals[2].u_int;
const char *manufacturer = get_0str(vals[3].u_obj, 0, 32);
const char *product = get_0str(vals[4].u_obj, 0, 32);
const char *serial_number = get_0str(vals[5].u_obj, 0, 32);
const char *interface = get_0str(vals[6].u_obj, 0, 32);
CHECK_PARAM_RANGE(vendor_id, 0, 65535)
CHECK_PARAM_RANGE(product_id, 0, 65535)
CHECK_PARAM_RANGE(release_num, 0, 65535)
if (manufacturer == NULL) {
mp_raise_ValueError("manufacturer is invalid");
}
if (product == NULL) {
mp_raise_ValueError("product is invalid");
}
if (serial_number == NULL) {
mp_raise_ValueError("serial_number is invalid");
}
if (interface == NULL) {
mp_raise_ValueError("interface is invalid");
}
mp_obj_USB_t *o = m_new_obj(mp_obj_USB_t);
o->base.type = type;
o->state = USB_CLOSED;
o->info.vendor_id = (uint16_t)(vendor_id);
o->info.product_id = (uint16_t)(product_id);
o->info.release_num = (uint16_t)(release_num);
o->info.manufacturer = manufacturer;
o->info.product = product;
o->info.serial_number = serial_number;
o->info.interface = interface;
mp_obj_list_init(&o->ifaces, 0);
return MP_OBJ_FROM_PTR(o);
}
/// def add(self, iface: Union[HID, VCP, WebUSB]) -> None:
/// '''
/// Registers passed interface into the USB stack.
/// '''
STATIC mp_obj_t mod_trezorio_USB_add(mp_obj_t self, mp_obj_t iface) {
mp_obj_USB_t *o = MP_OBJ_TO_PTR(self);
if (o->state != USB_CLOSED) {
mp_raise_msg(&mp_type_RuntimeError, "already initialized");
}
mp_obj_list_append(MP_OBJ_FROM_PTR(&o->ifaces), iface);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(mod_trezorio_USB_add_obj, mod_trezorio_USB_add);
/// def open(self) -> None:
/// '''
/// Initializes the USB stack.
/// '''
STATIC mp_obj_t mod_trezorio_USB_open(mp_obj_t self) {
mp_obj_USB_t *o = MP_OBJ_TO_PTR(self);
if (o->state != USB_CLOSED) {
mp_raise_msg(&mp_type_RuntimeError, "already initialized");
}
size_t iface_cnt;
mp_obj_t *iface_objs;
mp_obj_get_array(MP_OBJ_FROM_PTR(&o->ifaces), &iface_cnt, &iface_objs);
// Initialize the USB stack
usb_init(&o->info);
int vcp_iface_num = -1;
// Add all interfaces
for (size_t i = 0; i < iface_cnt; i++) {
mp_obj_t iface = iface_objs[i];
if (MP_OBJ_IS_TYPE(iface, &mod_trezorio_HID_type)) {
mp_obj_HID_t *hid = MP_OBJ_TO_PTR(iface);
if (sectrue != usb_hid_add(&hid->info)) {
usb_deinit();
mp_raise_msg(&mp_type_RuntimeError, "failed to add HID interface");
}
} else if (MP_OBJ_IS_TYPE(iface, &mod_trezorio_WebUSB_type)) {
mp_obj_WebUSB_t *webusb = MP_OBJ_TO_PTR(iface);
if (sectrue != usb_webusb_add(&webusb->info)) {
usb_deinit();
mp_raise_msg(&mp_type_RuntimeError, "failed to add WebUSB interface");
}
} else if (MP_OBJ_IS_TYPE(iface, &mod_trezorio_VCP_type)) {
mp_obj_VCP_t *vcp = MP_OBJ_TO_PTR(iface);
if (sectrue != usb_vcp_add(&vcp->info)) {
usb_deinit();
mp_raise_msg(&mp_type_RuntimeError, "failed to add VCP interface");
}
vcp_iface_num = vcp->info.iface_num;
} else {
usb_deinit();
mp_raise_TypeError("expected HID, WebUSB or VCP type");
}
}
// Start the USB stack
usb_start();
o->state = USB_OPENED;
// If we found any VCP interfaces, use the last one for stdio,
// otherwise disable the stdio support
mp_hal_set_vcp_iface(vcp_iface_num);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_trezorio_USB_open_obj, mod_trezorio_USB_open);
/// def close(self) -> None:
/// '''
/// Cleans up the USB stack.
/// '''
STATIC mp_obj_t mod_trezorio_USB_close(mp_obj_t self) {
mp_obj_USB_t *o = MP_OBJ_TO_PTR(self);
if (o->state != USB_OPENED) {
mp_raise_msg(&mp_type_RuntimeError, "not initialized");
}
usb_stop();
usb_deinit();
mp_obj_list_set_len(MP_OBJ_FROM_PTR(&o->ifaces), 0);
mp_seq_clear(o->ifaces.items, 0, o->ifaces.alloc, sizeof(*o->ifaces.items));
o->info.vendor_id = 0;
o->info.product_id = 0;
o->info.release_num = 0;
o->info.manufacturer = NULL;
o->info.product = NULL;
o->info.serial_number = NULL;
o->state = USB_CLOSED;
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_trezorio_USB_close_obj, mod_trezorio_USB_close);
STATIC mp_obj_t mod_trezorio_USB___del__(mp_obj_t self) {
mp_obj_USB_t *o = MP_OBJ_TO_PTR(self);
if (o->state != USB_CLOSED) {
usb_stop();
usb_deinit();
o->state = USB_CLOSED;
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_trezorio_USB___del___obj, mod_trezorio_USB___del__);
STATIC const mp_rom_map_elem_t mod_trezorio_USB_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_add), MP_ROM_PTR(&mod_trezorio_USB_add_obj) },
{ MP_ROM_QSTR(MP_QSTR_open), MP_ROM_PTR(&mod_trezorio_USB_open_obj) },
{ MP_ROM_QSTR(MP_QSTR_close), MP_ROM_PTR(&mod_trezorio_USB_close_obj) },
{ MP_ROM_QSTR(MP_QSTR___del__), MP_ROM_PTR(&mod_trezorio_USB___del___obj) },
};
STATIC MP_DEFINE_CONST_DICT(mod_trezorio_USB_locals_dict, mod_trezorio_USB_locals_dict_table);
STATIC const mp_obj_type_t mod_trezorio_USB_type = {
{ &mp_type_type },
.name = MP_QSTR_USB,
.make_new = mod_trezorio_USB_make_new,
.locals_dict = (void*)&mod_trezorio_USB_locals_dict,
};