/*
* Driver for the AT73C213 16-bit stereo DAC on Atmel ATSTK1000
*
* Copyright (C) 2006 - 2007 Atmel Corporation
*
* 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.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
* The full GNU General Public License is included in this
* distribution in the file called COPYING.
*/
#ifndef _SND_AT73C213_H
#define _SND_AT73C213_H
/* DAC control register */
#define DAC_CTRL 0x00
#define DAC_CTRL_ONPADRV 7
#define DAC_CTRL_ONAUXIN 6
#define DAC_CTRL_ONDACR 5
#define DAC_CTRL_ONDACL 4
#define DAC_CTRL_ONLNOR 3
#define DAC_CTRL_ONLNOL 2
#define DAC_CTRL_ONLNIR 1
#define DAC_CTRL_ONLNIL 0
/* DAC left line in gain register */
#define DAC_LLIG 0x01
#define DAC_LLIG_LLIG 0
/* DAC right line in gain register */
#define DAC_RLIG 0x02
#define DAC_RLIG_RLIG 0
/* DAC Left Master Playback Gain Register */
#define DAC_LMPG 0x03
#define DAC_LMPG_LMPG 0
/* DAC Right Master Playback Gain Register */
#define DAC_RMPG 0x04
#define DAC_RMPG_RMPG 0
/* DAC Left Line Out Gain Register */
#define DAC_LLOG 0x05
#define DAC_LLOG_LLOG 0
/* DAC Right Line Out Gain Register */
#define DAC_RLOG 0x06
#define DAC_RLOG_RLOG 0
/* DAC Output Level Control Register */
#define DAC_OLC 0x07
#define DAC_OLC_RSHORT 7
#define DAC_OLC_ROLC 4
#define DAC_OLC_LSHORT 3
#define DAC_OLC_LOLC 0
/* DAC Mixer Control Register */
#define DAC_MC 0x08
#define DAC_MC_INVR 5
#define DAC_MC_INVL 4
#define DAC_MC_RMSMIN2 3
#define DAC_MC_RMSMIN1 2
#define DAC_MC_LMSMIN2 1
#define DAC_MC_LMSMIN1 0
/* DAC Clock and Sampling Frequency Control Register */
#define DAC_CSFC 0x09
#define DAC_CSFC_OVRSEL 4
/* DAC Miscellaneous Register */
#define DAC_MISC 0x0A
#define DAC_MISC_VCMCAPSEL 7
#define DAC_MISC_DINTSEL 4
#define DAC_MISC_DITHEN 3
#define DAC_MISC_DEEMPEN 2
#define DAC_MISC_NBITS 0
/* DAC Precharge Control Register */
#define DAC_PRECH 0x0C
#define DAC_PRECH_PRCHGPDRV 7
#define DAC_PRECH_PRCHGAUX1 6
#define DAC_PRECH_PRCHGLNOR 5
#define DAC_PRECH_PRCHGLNOL 4
#define DAC_PRECH_PRCHGLNIR 3
#define DAC_PRECH_PRCHGLNIL 2
#define DAC_PRECH_PRCHG 1
#define DAC_PRECH_ONMSTR 0
/* DAC Auxiliary Input Gain Control Register */
#define DAC_AUXG 0x0D
#define DAC_AUXG_AUXG 0
/* DAC Reset Register */
#define DAC_RST 0x10
#define DAC_RST_RESMASK 2
#define DAC_RST_RESFILZ 1
#define DAC_RST_RSTZ 0
/* Power Amplifier Control Register */
#define PA_CTRL 0x11
#define PA_CTRL_APAON 6
#define PA_CTRL_APAPRECH 5
#define PA_CTRL_APALP 4
#define PA_CTRL_APAGAIN 0
#endif /* _SND_AT73C213_H */
cgi/linux/net-next.git/log/net/sctp/bind_addr.c?id=62f01db9cf830957931f811d4da5f2bc34ce92f4&showmsg=1'>Expand)
x86/efi: Always map the first physical page into the EFI pagetables
Commit:
129766708 ("x86/efi: Only map RAM into EFI page tables if in mixed-mode")
stopped creating 1:1 mappings for all RAM, when running in native 64-bit mode.
It turns out though that there are 64-bit EFI implementations in the wild
(this particular problem has been reported on a Lenovo Yoga 710-11IKB),
which still make use of the first physical page for their own private use,
even though they explicitly mark it EFI_CONVENTIONAL_MEMORY in the memory
map.
In case there is no mapping for this particular frame in the EFI pagetables,
as soon as firmware tries to make use of it, a triple fault occurs and the
system reboots (in case of the Yoga 710-11IKB this is very early during bootup).
Fix that by always mapping the first page of physical memory into the EFI
pagetables. We're free to hand this page to the BIOS, as trim_bios_range()
will reserve the first page and isolate it away from memory allocators anyway.
Note that just reverting 129766708 alone is not enough on v4.9-rc1+ to fix the
regression on affected hardware, as this commit:
ab72a27da ("x86/efi: Consolidate region mapping logic")
later made the first physical frame not to be mapped anyway.
Reported-by: Hanka Pavlikova <hanka@ucw.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Borislav Petkov <bp@suse.de>
Cc: Laura Abbott <labbott@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vojtech Pavlik <vojtech@ucw.cz>
Cc: Waiman Long <waiman.long@hpe.com>
Cc: linux-efi@vger.kernel.org
Cc: stable@kernel.org # v4.8+
Fixes: 129766708 ("x86/efi: Only map RAM into EFI page tables if in mixed-mode")
Link: http://lkml.kernel.org/r/20170127222552.22336-1-matt@codeblueprint.co.uk
[ Tidied up the changelog and the comment. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>