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linux: add hidraw ioctl handler

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First step towards getting the Linux version of SDL with HIDAPI gamepad
drivers to work. Not quite complte as SDL expects to find some
information in sysfs as well.

Signed-off-by: Alex S <iwtcex@gmail.com>
Reviewed by: imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/1938
This commit is contained in:
Alex S 2025-12-31 12:11:53 +03:00 • committed by Warner Losh
parent 7b3fb3caef
commit d5e5fed1ed
2 changed files with 70 additions and 0 deletions
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51
sys/compat/linux/linux_ioctl.c
View file

@ -58,6 +58,7 @@
#include <net/if_types.h>
#include <dev/evdev/input.h>
#include <dev/hid/hidraw.h>
#include <dev/usb/usb_ioctl.h>
#ifdef COMPAT_LINUX32
@ -113,6 +114,7 @@ DEFINE_LINUX_IOCTL_SET(kcov, KCOV);
#ifndef COMPAT_LINUX32
DEFINE_LINUX_IOCTL_SET(nvme, NVME);
#endif
DEFINE_LINUX_IOCTL_SET(hidraw, HIDRAW);
#undef DEFINE_LINUX_IOCTL_SET
@ -3637,6 +3639,55 @@ linux_ioctl_nvme(struct thread *td, struct linux_ioctl_args *args)
}
#endif
static int
linux_ioctl_hidraw(struct thread *td, struct linux_ioctl_args *args)
{
int len = (args->cmd & 0x3fff0000) >> 16;
if (len > 8192)
return (EINVAL);
switch (args->cmd & 0xffff) {
case LINUX_HIDIOCGRDESCSIZE:
args->cmd = HIDIOCGRDESCSIZE;
break;
case LINUX_HIDIOCGRDESC:
args->cmd = HIDIOCGRDESC;
break;
case LINUX_HIDIOCGRAWINFO:
args->cmd = HIDIOCGRAWINFO;
break;
case LINUX_HIDIOCGRAWNAME:
args->cmd = HIDIOCGRAWNAME(len);
break;
case LINUX_HIDIOCGRAWPHYS:
args->cmd = HIDIOCGRAWPHYS(len);
break;
case LINUX_HIDIOCSFEATURE:
args->cmd = HIDIOCSFEATURE(len);
break;
case LINUX_HIDIOCGFEATURE:
args->cmd = HIDIOCGFEATURE(len);
break;
case LINUX_HIDIOCGRAWUNIQ:
args->cmd = HIDIOCGRAWUNIQ(len);
break;
case LINUX_HIDIOCSINPUT:
args->cmd = HIDIOCSINPUT(len);
break;
case LINUX_HIDIOCGINPUT:
args->cmd = HIDIOCGINPUT(len);
break;
case LINUX_HIDIOCSOUTPUT:
args->cmd = HIDIOCSOUTPUT(len);
break;
case LINUX_HIDIOCGOUTPUT:
args->cmd = HIDIOCGOUTPUT(len);
break;
}
return (sys_ioctl(td, (struct ioctl_args *)args));
}
/*
* main ioctl syscall function
*/

19
sys/compat/linux/linux_ioctl.h
View file

@ -806,6 +806,25 @@
#define LINUX_IOCTL_NVME_MIN LINUX_NVME_IOCTL_ID
#define LINUX_IOCTL_NVME_MAX LINUX_NVME_IOCTL_RESCAN
/*
* hidraw
*/
#define LINUX_HIDIOCGRDESCSIZE 0x4801
#define LINUX_HIDIOCGRDESC 0x4802
#define LINUX_HIDIOCGRAWINFO 0x4803
#define LINUX_HIDIOCGRAWNAME 0x4804
#define LINUX_HIDIOCGRAWPHYS 0x4805
#define LINUX_HIDIOCSFEATURE 0x4806
#define LINUX_HIDIOCGFEATURE 0x4807
#define LINUX_HIDIOCGRAWUNIQ 0x4808
#define LINUX_HIDIOCSINPUT 0x4809
#define LINUX_HIDIOCGINPUT 0x480A
#define LINUX_HIDIOCSOUTPUT 0x480B
#define LINUX_HIDIOCGOUTPUT 0x480C
#define LINUX_IOCTL_HIDRAW_MIN LINUX_HIDIOCGRDESCSIZE
#define LINUX_IOCTL_HIDRAW_MAX LINUX_HIDIOCGOUTPUT
/*
* Pluggable ioctl handlers
*/