/* * Register definitions for Atmel AC97C * * Copyright (C) 2005-2009 Atmel Corporation * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 as published * by the Free Software Foundation. */ #ifndef __SOUND_ATMEL_AC97C_H #define __SOUND_ATMEL_AC97C_H #define AC97C_MR 0x08 #define AC97C_ICA 0x10 #define AC97C_OCA 0x14 #define AC97C_CARHR 0x20 #define AC97C_CATHR 0x24 #define AC97C_CASR 0x28 #define AC97C_CAMR 0x2c #define AC97C_CORHR 0x40 #define AC97C_COTHR 0x44 #define AC97C_COSR 0x48 #define AC97C_COMR 0x4c #define AC97C_SR 0x50 #define AC97C_IER 0x54 #define AC97C_IDR 0x58 #define AC97C_IMR 0x5c #define AC97C_VERSION 0xfc #define AC97C_CATPR PDC_TPR #define AC97C_CATCR PDC_TCR #define AC97C_CATNPR PDC_TNPR #define AC97C_CATNCR PDC_TNCR #define AC97C_CARPR PDC_RPR #define AC97C_CARCR PDC_RCR #define AC97C_CARNPR PDC_RNPR #define AC97C_CARNCR PDC_RNCR #define AC97C_PTCR PDC_PTCR #define AC97C_MR_ENA (1 << 0) #define AC97C_MR_WRST (1 << 1) #define AC97C_MR_VRA (1 << 2) #define AC97C_CSR_TXRDY (1 << 0) #define AC97C_CSR_TXEMPTY (1 << 1) #define AC97C_CSR_UNRUN (1 << 2) #define AC97C_CSR_RXRDY (1 << 4) #define AC97C_CSR_OVRUN (1 << 5) #define AC97C_CSR_ENDTX (1 << 10) #define AC97C_CSR_ENDRX (1 << 14) #define AC97C_CMR_SIZE_20 (0 << 16) #define AC97C_CMR_SIZE_18 (1 << 16) #define AC97C_CMR_SIZE_16 (2 << 16) #define AC97C_CMR_SIZE_10 (3 << 16) #define AC97C_CMR_CEM_LITTLE (1 << 18) #define AC97C_CMR_CEM_BIG (0 << 18) #define AC97C_CMR_CENA (1 << 21) #define AC97C_CMR_DMAEN (1 << 22) #define AC97C_SR_CAEVT (1 << 3) #define AC97C_SR_COEVT (1 << 2) #define AC97C_SR_WKUP (1 << 1) #define AC97C_SR_SOF (1 << 0) #define AC97C_CH_MASK(slot) \ (0x7 << (3 * (AC97_SLOT_##slot - 3))) #define AC97C_CH_ASSIGN(slot, channel) \ (AC97C_CHANNEL_##channel << (3 * (AC97_SLOT_##slot - 3))) #define AC97C_CHANNEL_NONE 0x0 #define AC97C_CHANNEL_A 0x1 #endif /* __SOUND_ATMEL_AC97C_H */ next.git/commit/sound/drivers/Makefile?h=nds-private-remove&id=c8f325a59cfc718d13a50fbc746ed9b415c25e92'>commitdiff
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authorArd Biesheuvel <ard.biesheuvel@linaro.org>2017-02-01 17:45:02 +0000
committerIngo Molnar <mingo@kernel.org>2017-02-01 21:17:49 +0100
commitc8f325a59cfc718d13a50fbc746ed9b415c25e92 (patch)
treed53fbdac9d0781e39a13b2ac6b2bd258cf3b4140 /sound/drivers/Makefile
parentbf29bddf0417a4783da3b24e8c9e017ac649326f (diff)
efi/fdt: Avoid FDT manipulation after ExitBootServices()
Some AArch64 UEFI implementations disable the MMU in ExitBootServices(), after which unaligned accesses to RAM are no longer supported. Commit: abfb7b686a3e ("efi/libstub/arm*: Pass latest memory map to the kernel") fixed an issue in the memory map handling of the stub FDT code, but inadvertently created an issue with such firmware, by moving some of the FDT manipulation to after the invocation of ExitBootServices(). Given that the stub's libfdt implementation uses the ordinary, accelerated string functions, which rely on hardware handling of unaligned accesses, manipulating the FDT with the MMU off may result in alignment faults. So fix the situation by moving the update_fdt_memmap() call into the callback function invoked by efi_exit_boot_services() right before it calls the ExitBootServices() UEFI service (which is arguably a better place for it anyway) Note that disabling the MMU in ExitBootServices() is not compliant with the UEFI spec, and carries great risk due to the fact that switching from cached to uncached memory accesses halfway through compiler generated code (i.e., involving a stack) can never be done in a way that is architecturally safe. Fixes: abfb7b686a3e ("efi/libstub/arm*: Pass latest memory map to the kernel") Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Tested-by: Riku Voipio <riku.voipio@linaro.org> Cc: <stable@vger.kernel.org> Cc: mark.rutland@arm.com Cc: linux-efi@vger.kernel.org Cc: matt@codeblueprint.co.uk Cc: leif.lindholm@linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1485971102-23330-2-git-send-email-ard.biesheuvel@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'sound/drivers/Makefile')