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Add _IOR and similar macros to nvmm ioctl codes
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dalmemail committed May 21, 2024
1 parent 206218b commit dc0c22b
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Showing 2 changed files with 85 additions and 24 deletions.
82 changes: 82 additions & 0 deletions src/add-ons/kernel/drivers/nvmm/include/sys/ioccom.h
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@@ -0,0 +1,82 @@
/* $NetBSD: ioccom.h,v 1.13 2019/05/26 10:21:33 hannken Exp $ */

/*-
* Copyright (c) 1982, 1986, 1990, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)ioccom.h 8.3 (Berkeley) 1/9/95
*/

#ifndef _SYS_IOCCOM_H_
#define _SYS_IOCCOM_H_

/*
* Ioctl's have the command encoded in the lower word, and the size of
* any in or out parameters in the upper word. The high 3 bits of the
* upper word are used to encode the in/out status of the parameter.
*
* 31 29 28 16 15 8 7 0
* +---------------------------------------------------------------+
* | I/O | Parameter Length | Command Group | Command |
* +---------------------------------------------------------------+
*/
#define IOCPARM_MASK 0x1fff /* parameter length, at most 13 bits */
#define IOCPARM_SHIFT 16
#define IOCGROUP_SHIFT 8
#define IOCPARM_LEN(x) (((x) >> IOCPARM_SHIFT) & IOCPARM_MASK)
#define IOCBASECMD(x) ((x) & ~(IOCPARM_MASK << IOCPARM_SHIFT))
#define IOCGROUP(x) (((x) >> IOCGROUP_SHIFT) & 0xff)

#define IOCPARM_MAX NBPG /* max size of ioctl args, mult. of NBPG */
/* no parameters */
#define IOC_VOID (unsigned long)0x20000000
/* copy parameters out */
#define IOC_OUT (unsigned long)0x40000000
/* copy parameters in */
#define IOC_IN (unsigned long)0x80000000
/* copy parameters in and out */
#define IOC_INOUT (IOC_IN|IOC_OUT)
/* mask for IN/OUT/VOID */
#define IOC_DIRMASK (unsigned long)0xe0000000

#define _IOC(inout, group, num, len) \
((inout) | (((len) & IOCPARM_MASK) << IOCPARM_SHIFT) | \
((group) << IOCGROUP_SHIFT) | (num))
#define _IO(g,n) _IOC(IOC_VOID, (g), (n), 0)
#define _IOR(g,n,t) _IOC(IOC_OUT, (g), (n), sizeof(t))
#define _IOW(g,n,t) _IOC(IOC_IN, (g), (n), sizeof(t))
/* this should be _IORW, but stdio got there first */
#define _IOWR(g,n,t) _IOC(IOC_INOUT, (g), (n), sizeof(t))

#define IOCSNPRINTF(buf, len, cmd) \
snprintf((buf), (len), "_IO%s%s('%c', %hhu)", \
(((cmd) >> 30) & 1) ? "R" : "", \
(((cmd) >> 30) & 2) ? "W" : "", \
(char)IOCGROUP(cmd), (unsigned char)(cmd))


#endif /* !_SYS_IOCCOM_H_ */
27 changes: 3 additions & 24 deletions src/add-ons/kernel/drivers/nvmm/nvmm_ioctl.h
Original file line number Diff line number Diff line change
Expand Up @@ -29,7 +29,9 @@
#ifndef _NVMM_IOCTL_H_
#define _NVMM_IOCTL_H_

#ifndef __HAIKU__
#if defined(__HAIKU__)
#include "include/sys/ioccom.h"
#else

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@waddlesplash

waddlesplash May 21, 2024

Collaborator

Rather than do this, you can probably modify the Jamfile to specify the include directory as a "system" headers directory.

#include <sys/ioccom.h>
#endif

Expand Down Expand Up @@ -150,28 +152,6 @@ struct nvmm_ioc_ctl {
size_t size;
};

#if defined(__HAIKU__)
// These ioctl opcodes are not unique in Haiku
// (that's what the _IOXX() macros try to achive)
enum {
NVMM_IOC_CAPABILITY = B_DEVICE_OP_CODES_END + 1,
NVMM_IOC_MACHINE_CREATE,
NVMM_IOC_MACHINE_DESTROY,
NVMM_IOC_MACHINE_CONFIGURE,
NVMM_IOC_VCPU_CREATE,
NVMM_IOC_VCPU_DESTROY,
NVMM_IOC_VCPU_CONFIGURE,
NVMM_IOC_VCPU_SETSTATE,
NVMM_IOC_VCPU_GETSTATE,
NVMM_IOC_VCPU_INJECT,
NVMM_IOC_VCPU_RUN,
NVMM_IOC_GPA_MAP,
NVMM_IOC_GPA_UNMAP,
NVMM_IOC_HVA_MAP,
NVMM_IOC_HVA_UNMAP,
NVMM_IOC_CTL
};
#else
#define NVMM_IOC_CAPABILITY _IOR ('N', 0, struct nvmm_ioc_capability)
#define NVMM_IOC_MACHINE_CREATE _IOWR('N', 1, struct nvmm_ioc_machine_create)
#define NVMM_IOC_MACHINE_DESTROY _IOW ('N', 2, struct nvmm_ioc_machine_destroy)
Expand All @@ -188,6 +168,5 @@ enum {
#define NVMM_IOC_HVA_MAP _IOW ('N', 13, struct nvmm_ioc_hva_map)
#define NVMM_IOC_HVA_UNMAP _IOW ('N', 14, struct nvmm_ioc_hva_unmap)
#define NVMM_IOC_CTL _IOW ('N', 20, struct nvmm_ioc_ctl)
#endif

#endif /* _NVMM_IOCTL_H_ */

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