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Implement the USB_GET_DEVICEINFO ioctl(2) for uhid(4).

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Submitted by:		pedro martelletto <pedro@ambientworks.net>
MFC after:		1 week
Sponsored by:		Mellanox Technologies // NVIDIA Networking
This commit is contained in:
Hans Petter Selasky 2020-10-31 21:53:23 +00:00
parent bd5e074531
commit c77bfaa750
4 changed files with 32 additions and 7 deletions
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7
share/man/man4/uhid.4
View file

@ -29,7 +29,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd July 1, 2018
.Dd Oct 31, 2020
.Dt UHID 4
.Os
.Sh NAME
@ -131,6 +131,11 @@ and the
.Va ugd_maxlen
fields.
This call may fail if the device does not support this feature.
.It Dv USB_GET_DEVICEINFO Pq Vt "struct usb_device_info"
Returns information about the device, like USB vendor ID and USB product ID.
This call will not issue any USB transactions.
Also refer to
.Xr ugen 4 .
.El
.Pp
Use

21
sys/dev/usb/input/uhid.c
View file

@ -70,6 +70,7 @@ __FBSDID("$FreeBSD$");
#include <dev/usb/usbdi_util.h>
#include <dev/usb/usbhid.h>
#include <dev/usb/usb_ioctl.h>
#include <dev/usb/usb_generic.h>
#define USB_DEBUG_VAR uhid_debug
#include <dev/usb/usb_debug.h>
@ -144,11 +145,13 @@ static usb_fifo_cmd_t uhid_stop_write;
static usb_fifo_open_t uhid_open;
static usb_fifo_close_t uhid_close;
static usb_fifo_ioctl_t uhid_ioctl;
static usb_fifo_ioctl_t uhid_ioctl_post;
static struct usb_fifo_methods uhid_fifo_methods = {
.f_open = &uhid_open,
.f_close = &uhid_close,
.f_ioctl = &uhid_ioctl,
.f_ioctl_post = &uhid_ioctl_post,
.f_start_read = &uhid_start_read,
.f_stop_read = &uhid_stop_read,
.f_start_write = &uhid_start_write,
@ -644,6 +647,24 @@ uhid_ioctl(struct usb_fifo *fifo, u_long cmd, void *addr,
*(int *)addr = 0; /* XXX: we only support reportid 0? */
break;
default:
error = ENOIOCTL;
break;
}
return (error);
}
static int
uhid_ioctl_post(struct usb_fifo *fifo, u_long cmd, void *addr,
int fflags)
{
int error;
switch (cmd) {
case USB_GET_DEVICEINFO:
error = ugen_fill_deviceinfo(fifo, addr);
break;
default:
error = EINVAL;
break;

10
sys/dev/usb/usb_generic.c
View file

@ -109,8 +109,6 @@ static int ugen_set_interface(struct usb_fifo *, uint8_t, uint8_t);
static int ugen_get_cdesc(struct usb_fifo *, struct usb_gen_descriptor *);
static int ugen_get_sdesc(struct usb_fifo *, struct usb_gen_descriptor *);
static int ugen_get_iface_driver(struct usb_fifo *f, struct usb_gen_descriptor *ugd);
static int usb_gen_fill_deviceinfo(struct usb_fifo *,
struct usb_device_info *);
static int ugen_re_enumerate(struct usb_fifo *);
static int ugen_iface_ioctl(struct usb_fifo *, u_long, void *, int);
static uint8_t ugen_fs_get_complete(struct usb_fifo *, uint8_t *);
@ -814,7 +812,7 @@ ugen_get_iface_driver(struct usb_fifo *f, struct usb_gen_descriptor *ugd)
}
/*------------------------------------------------------------------------*
* usb_gen_fill_deviceinfo
* ugen_fill_deviceinfo
*
* This function dumps information about an USB device to the
* structure pointed to by the "di" argument.
@ -823,8 +821,8 @@ ugen_get_iface_driver(struct usb_fifo *f, struct usb_gen_descriptor *ugd)
* 0: Success
* Else: Failure
*------------------------------------------------------------------------*/
static int
usb_gen_fill_deviceinfo(struct usb_fifo *f, struct usb_device_info *di)
int
ugen_fill_deviceinfo(struct usb_fifo *f, struct usb_device_info *di)
{
struct usb_device *udev;
struct usb_device *hub;
@ -2205,7 +2203,7 @@ ugen_ioctl_post(struct usb_fifo *f, u_long cmd, void *addr, int fflags)
case USB_DEVICEINFO:
case USB_GET_DEVICEINFO:
error = usb_gen_fill_deviceinfo(f, addr);
error = ugen_fill_deviceinfo(f, addr);
break;
case USB_DEVICESTATS:

1
sys/dev/usb/usb_generic.h
View file

@ -31,5 +31,6 @@
extern struct usb_fifo_methods usb_ugen_methods;
int ugen_do_request(struct usb_fifo *f, struct usb_ctl_request *ur);
int ugen_fill_deviceinfo(struct usb_fifo *f, struct usb_device_info *di);
#endif /* _USB_GENERIC_H_ */