1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 * Wire Adapter Host Controller Driver
 4 * Common items to HWA and DWA based HCDs
 5 *
 6 * Copyright (C) 2005-2006 Intel Corporation
 7 * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
 8 *
 9 * FIXME: docs
10 */
11#include <linux/slab.h>
12#include <linux/module.h>
13#include "wusbhc.h"
14#include "wa-hc.h"
15
16/**
17 * Assumes
18 *
19 * wa->usb_dev and wa->usb_iface initialized and refcounted,
20 * wa->wa_descr initialized.
21 */
22int wa_create(struct wahc *wa, struct usb_interface *iface,
23	kernel_ulong_t quirks)
24{
25	int result;
26	struct device *dev = &iface->dev;
27
28	if (iface->cur_altsetting->desc.bNumEndpoints < 3)
29		return -ENODEV;
30
31	result = wa_rpipes_create(wa);
32	if (result < 0)
33		goto error_rpipes_create;
34	wa->quirks = quirks;
35	/* Fill up Data Transfer EP pointers */
36	wa->dti_epd = &iface->cur_altsetting->endpoint[1].desc;
37	wa->dto_epd = &iface->cur_altsetting->endpoint[2].desc;
38	wa->dti_buf_size = usb_endpoint_maxp(wa->dti_epd);
39	wa->dti_buf = kmalloc(wa->dti_buf_size, GFP_KERNEL);
40	if (wa->dti_buf == NULL) {
41		result = -ENOMEM;
42		goto error_dti_buf_alloc;
43	}
44	result = wa_nep_create(wa, iface);
45	if (result < 0) {
46		dev_err(dev, "WA-CDS: can't initialize notif endpoint: %d\n",
47			result);
48		goto error_nep_create;
49	}
50	return 0;
51
52error_nep_create:
53	kfree(wa->dti_buf);
54error_dti_buf_alloc:
55	wa_rpipes_destroy(wa);
56error_rpipes_create:
57	return result;
58}
59EXPORT_SYMBOL_GPL(wa_create);
60
61
62void __wa_destroy(struct wahc *wa)
63{
64	if (wa->dti_urb) {
65		usb_kill_urb(wa->dti_urb);
66		usb_put_urb(wa->dti_urb);
67	}
68	kfree(wa->dti_buf);
69	wa_nep_destroy(wa);
70	wa_rpipes_destroy(wa);
71}
72EXPORT_SYMBOL_GPL(__wa_destroy);
73
74/**
75 * wa_reset_all - reset the WA device
76 * @wa: the WA to be reset
77 *
78 * For HWAs the radio controller and all other PALs are also reset.
79 */
80void wa_reset_all(struct wahc *wa)
81{
82	/* FIXME: assuming HWA. */
83	wusbhc_reset_all(wa->wusb);
84}
85
86MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
87MODULE_DESCRIPTION("Wireless USB Wire Adapter core");
88MODULE_LICENSE("GPL");