73 lines
1.7 KiB
C
73 lines
1.7 KiB
C
/*
|
|
* \brief Implementation of linux/usb.h
|
|
* \author Stefan Kalkowski
|
|
* \date 2018-08-25
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2018 Genode Labs GmbH
|
|
*
|
|
* This file is distributed under the terms of the GNU General Public License
|
|
* version 2.
|
|
*/
|
|
|
|
/* Linux kit includes */
|
|
#include <lx_kit/malloc.h>
|
|
#include <lx_kit/usb.h>
|
|
|
|
int usb_control_msg(struct usb_device *dev, unsigned int pipe,
|
|
__u8 request, __u8 requesttype, __u16 value,
|
|
__u16 index, void *data, __u16 size, int timeout)
|
|
{
|
|
usb_ctrlrequest *dr = (usb_ctrlrequest*)
|
|
kmalloc(sizeof(usb_ctrlrequest), GFP_KERNEL);
|
|
if (!dr) return -ENOMEM;
|
|
|
|
dr->bRequestType = requesttype;
|
|
dr->bRequest = request;
|
|
dr->wValue = cpu_to_le16(value);
|
|
dr->wIndex = cpu_to_le16(index);
|
|
dr->wLength = cpu_to_le16(size);
|
|
|
|
urb * u = (urb*) usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!u) return -ENOMEM;
|
|
|
|
usb_fill_control_urb(u, dev, pipe, (unsigned char *)dr, data,
|
|
size, nullptr, nullptr);
|
|
|
|
Sync_ctrl_urb * scu = new (Lx::Malloc::mem())
|
|
Sync_ctrl_urb(*(Usb::Connection*)(dev->bus->controller), *u);
|
|
scu->send(timeout);
|
|
int ret = u->actual_length;
|
|
usb_free_urb(u);
|
|
return ret;
|
|
}
|
|
|
|
|
|
struct urb *usb_alloc_urb(int iso_packets, gfp_t mem_flags)
|
|
{
|
|
struct urb *urb = (struct urb*)
|
|
kmalloc(sizeof(struct urb) +
|
|
iso_packets * sizeof(struct usb_iso_packet_descriptor),
|
|
GFP_KERNEL);
|
|
if (!urb) return NULL;
|
|
Genode::memset(urb, 0, sizeof(*urb));
|
|
INIT_LIST_HEAD(&urb->anchor_list);
|
|
return urb;
|
|
}
|
|
|
|
|
|
int usb_submit_urb(struct urb *urb, gfp_t mem_flags)
|
|
{
|
|
Urb * u = new (Lx::Malloc::mem())
|
|
Urb(*(Usb::Connection*)(urb->dev->bus->controller), *urb);
|
|
u->send();
|
|
return 0;
|
|
}
|
|
|
|
|
|
void usb_free_urb(struct urb *urb)
|
|
{
|
|
kfree(urb);
|
|
}
|