JFIF$        dd7 

Viewing File: /usr/src/kernels/5.14.0-570.32.1.el9_6.x86_64/include/uapi/linux/aspeed-p2a-ctrl.h

/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
/*
 * Copyright 2019 Google Inc
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 *
 * Provides a simple driver to control the ASPEED P2A interface which allows
 * the host to read and write to various regions of the BMC's memory.
 */

#ifndef _UAPI_LINUX_ASPEED_P2A_CTRL_H
#define _UAPI_LINUX_ASPEED_P2A_CTRL_H

#include <linux/ioctl.h>
#include <linux/types.h>

#define ASPEED_P2A_CTRL_READ_ONLY 0
#define ASPEED_P2A_CTRL_READWRITE 1

/*
 * This driver provides a mechanism for enabling or disabling the read-write
 * property of specific windows into the ASPEED BMC's memory.
 *
 * A user can map a region of the BMC's memory as read-only or read-write, with
 * the caveat that once any region is mapped, all regions are unlocked for
 * reading.
 */

/*
 * Unlock a region of BMC physical memory for access from the host.
 *
 * Also used to read back the optional memory-region configuration for the
 * driver.
 */
struct aspeed_p2a_ctrl_mapping {
	__u64 addr;
	__u32 length;
	__u32 flags;
};

#define __ASPEED_P2A_CTRL_IOCTL_MAGIC 0xb3

/*
 * This IOCTL is meant to configure a region or regions of memory given a
 * starting address and length to be readable by the host, or
 * readable-writeable.
 */
#define ASPEED_P2A_CTRL_IOCTL_SET_WINDOW _IOW(__ASPEED_P2A_CTRL_IOCTL_MAGIC, \
		0x00, struct aspeed_p2a_ctrl_mapping)

/*
 * This IOCTL is meant to read back to the user the base address and length of
 * the memory-region specified to the driver for use with mmap.
 */
#define ASPEED_P2A_CTRL_IOCTL_GET_MEMORY_CONFIG \
	_IOWR(__ASPEED_P2A_CTRL_IOCTL_MAGIC, \
		0x01, struct aspeed_p2a_ctrl_mapping)

#endif /* _UAPI_LINUX_ASPEED_P2A_CTRL_H */
Back to Directory  nL+D550H?Mx ,D"v]qv;6*Zqn)ZP0!1 A "#a$2Qr D8 a Ri[f\mIykIw0cuFcRı?lO7к_f˓[C$殷WF<_W ԣsKcëIzyQy/_LKℂ;C",pFA:/]=H  ~,ls/9ć:[=/#f;)x{ٛEQ )~ =𘙲r*2~ a _V=' kumFD}KYYC)({ *g&f`툪ry`=^cJ.I](*`wq1dđ#̩͑0;H]u搂@:~וKL Nsh}OIR*8:2 !lDJVo(3=M(zȰ+i*NAr6KnSl)!JJӁ* %݉?|D}d5:eP0R;{$X'xF@.ÊB {,WJuQɲRI;9QE琯62fT.DUJ;*cP A\ILNj!J۱+O\͔]ޒS߼Jȧc%ANolՎprULZԛerE2=XDXgVQeӓk yP7U*omQIs,K`)6\G3t?pgjrmۛجwluGtfh9uyP0D;Uڽ"OXlif$)&|ML0Zrm1[HXPlPR0'G=i2N+0e2]]9VTPO׮7h(F*癈'=QVZDF,d߬~TX G[`le69CR(!S2!P <0x<!1AQ "Raq02Br#SCTb ?Ζ"]mH5WR7k.ۛ!}Q~+yԏz|@T20S~Kek *zFf^2X*(@8r?CIuI|֓>^ExLgNUY+{.RѪ τV׸YTD I62'8Y27'\TP.6d&˦@Vqi|8-OΕ]ʔ U=TL8=;6c| !qfF3aů&~$l}'NWUs$Uk^SV:U# 6w++s&r+nڐ{@29 gL u"TÙM=6(^"7r}=6YݾlCuhquympǦ GjhsǜNlɻ}o7#S6aw4!OSrD57%|?x>L |/nD6?/8w#[)L7+6〼T ATg!%5MmZ/c-{1_Je"|^$'O&ޱմTrb$w)R$& N1EtdU3Uȉ1pM"N*(DNyd96.(jQ)X 5cQɎMyW?Q*!R>6=7)Xj5`J]e8%t!+'!1Q5 !1 AQaqё#2"0BRb?Gt^## .llQT $v,,m㵜5ubV =sY+@d{N! dnO<.-B;_wJt6;QJd.Qc%p{ 1,sNDdFHI0ГoXшe黅XۢF:)[FGXƹ/w_cMeD,ʡcc.WDtA$j@:) -# u c1<@ۗ9F)KJ-hpP]_x[qBlbpʖw q"LFGdƶ*s+ډ_Zc"?%t[IP 6J]#=ɺVvvCGsGh1 >)6|ey?Lӣm,4GWUi`]uJVoVDG< SB6ϏQ@ TiUlyOU0kfV~~}SZ@*WUUi##; s/[=!7}"WN]'(L! ~y5g9T̅JkbM' +s:S +B)v@Mj e Cf jE 0Y\QnzG1д~Wo{T9?`Rmyhsy3!HAD]mc1~2LSu7xT;j$`}4->L#vzŏILS ֭T{rjGKC;bpU=-`BsK.SFw4Mq]ZdHS0)tLg