static int32
bus_std_ops(int32 op, ...)
{
switch (op) {
case B_MODULE_INIT: {
TRACE_MODULE("init\n");
if (gUSBStack)
return B_OK;
#ifdef HAIKU_TARGET_PLATFORM_BEOS
// This code is to handle plain R5 (non-BONE) where the same module
// gets loaded multiple times (once for each exported module
// interface, the USB v2 and v3 API in our case). We don't want to
// ever create multiple stacks however, so we "share" the same stack
// for both modules by storing it's address in a shared area.
void *address = NULL;
area_id shared = find_area("shared usb stack");
if (shared >= B_OK && clone_area("usb stack clone", &address,
B_ANY_KERNEL_ADDRESS, B_KERNEL_READ_AREA, shared) >= B_OK) {
gUSBStack = *((Stack **)address);
TRACE_MODULE("found shared stack at %p\n", gUSBStack);
return B_OK;
}
#endif
#ifdef TRACE_USB
set_dprintf_enabled(true);
#ifndef HAIKU_TARGET_PLATFORM_HAIKU
load_driver_symbols("usb");
#endif
#endif
Stack *stack = new(std::nothrow) Stack();
TRACE_MODULE("usb_module: stack created %p\n", stack);
if (!stack)
return B_NO_MEMORY;
if (stack->InitCheck() != B_OK) {
delete stack;
return ENODEV;
}
gUSBStack = stack;
#ifdef HAIKU_TARGET_PLATFORM_HAIKU
add_debugger_command("get_usb_pipe_for_id",
&debug_get_pipe_for_id,
"Gets the config for a USB pipe");
#elif HAIKU_TARGET_PLATFORM_BEOS
// Plain R5 workaround, see comment above.
shared = create_area("shared usb stack", &address,
B_ANY_KERNEL_ADDRESS, B_PAGE_SIZE, B_NO_LOCK,
B_KERNEL_WRITE_AREA);
if (shared >= B_OK)
*((Stack **)address) = gUSBStack;
#endif
break;
}
case B_MODULE_UNINIT:
TRACE_MODULE("uninit\n");
delete gUSBStack;
gUSBStack = NULL;
#ifdef HAIKU_TARGET_PLATFORM_HAIKU
remove_debugger_command("get_usb_pipe_for_id",
&debug_get_pipe_for_id);
#endif
break;
default:
return EINVAL;
}
return B_OK;
}
