#ifndef __SOUND_CS5535AUDIO_H #define __SOUND_CS5535AUDIO_H #define cs_writel(cs5535au, reg, val) outl(val, (cs5535au)->port + reg) #define cs_writeb(cs5535au, reg, val) outb(val, (cs5535au)->port + reg) #define cs_readl(cs5535au, reg) inl((cs5535au)->port + reg) #define cs_readw(cs5535au, reg) inw((cs5535au)->port + reg) #define cs_readb(cs5535au, reg) inb((cs5535au)->port + reg) #define CS5535AUDIO_MAX_DESCRIPTORS 128 /* acc_codec bar0 reg addrs */ #define ACC_GPIO_STATUS 0x00 #define ACC_CODEC_STATUS 0x08 #define ACC_CODEC_CNTL 0x0C #define ACC_IRQ_STATUS 0x12 #define ACC_BM0_CMD 0x20 #define ACC_BM1_CMD 0x28 #define ACC_BM0_PRD 0x24 #define ACC_BM1_PRD 0x2C #define ACC_BM0_STATUS 0x21 #define ACC_BM1_STATUS 0x29 #define ACC_BM0_PNTR 0x60 #define ACC_BM1_PNTR 0x64 /* acc_codec bar0 reg bits */ /* ACC_IRQ_STATUS */ #define IRQ_STS 0 #define WU_IRQ_STS 1 #define BM0_IRQ_STS 2 #define BM1_IRQ_STS 3 /* ACC_BMX_STATUS */ #define EOP (1<<0) #define BM_EOP_ERR (1<<1) /* ACC_BMX_CTL */ #define BM_CTL_EN 0x01 #define BM_CTL_PAUSE 0x03 #define BM_CTL_DIS 0x00 #define BM_CTL_BYTE_ORD_LE 0x00 #define BM_CTL_BYTE_ORD_BE 0x04 /* cs5535 specific ac97 codec register defines */ #define CMD_MASK 0xFF00FFFF #define CMD_NEW 0x00010000 #define STS_NEW 0x00020000 #define PRM_RDY_STS 0x00800000 #define ACC_CODEC_CNTL_WR_CMD (~0x80000000) #define ACC_CODEC_CNTL_RD_CMD 0x80000000 #define ACC_CODEC_CNTL_LNK_SHUTDOWN 0x00040000 #define ACC_CODEC_CNTL_LNK_WRM_RST 0x00020000 #define PRD_JMP 0x2000 #define PRD_EOP 0x4000 #define PRD_EOT 0x8000 enum { CS5535AUDIO_DMA_PLAYBACK, CS5535AUDIO_DMA_CAPTURE, NUM_CS5535AUDIO_DMAS }; struct cs5535audio; struct cs5535audio_dma_ops { int type; void (*enable_dma)(struct cs5535audio *cs5535au); void (*disable_dma)(struct cs5535audio *cs5535au); void (*pause_dma)(struct cs5535audio *cs5535au); void (*setup_prd)(struct cs5535audio *cs5535au, u32 prd_addr); u32 (*read_prd)(struct cs5535audio *cs5535au); u32 (*read_dma_pntr)(struct cs5535audio *cs5535au); }; struct cs5535audio_dma_desc { u32 addr; u16 size; u16 ctlreserved; }; struct cs5535audio_dma { const struct cs5535audio_dma_ops *ops; struct snd_dma_buffer desc_buf; struct snd_pcm_substream *substream; unsigned int buf_addr, buf_bytes; unsigned int period_bytes, periods; u32 saved_prd; int pcm_open_flag; }; struct cs5535audio { struct snd_card *card; struct snd_ac97 *ac97; struct snd_pcm *pcm; int irq; struct pci_dev *pci; unsigned long port; spinlock_t reg_lock; struct snd_pcm_substream *playback_substream; struct snd_pcm_substream *capture_substream; struct cs5535audio_dma dmas[NUM_CS5535AUDIO_DMAS]; }; extern const struct dev_pm_ops snd_cs5535audio_pm; #ifdef CONFIG_OLPC void olpc_prequirks(struct snd_card *card, struct snd_ac97_template *ac97); int olpc_quirks(struct snd_card *card, struct snd_ac97 *ac97); void olpc_quirks_cleanup(void); void olpc_analog_input(struct snd_ac97 *ac97, int on); void olpc_mic_bias(struct snd_ac97 *ac97, int on); static inline void olpc_capture_open(struct snd_ac97 *ac97) { /* default to Analog Input off */ olpc_analog_input(ac97, 0); /* enable MIC Bias for recording */ olpc_mic_bias(ac97, 1); } static inline void olpc_capture_close(struct snd_ac97 *ac97) { /* disable Analog Input */ olpc_analog_input(ac97, 0); /* disable the MIC Bias (so the recording LED turns off) */ olpc_mic_bias(ac97, 0); } #else static inline void olpc_prequirks(struct snd_card *card, struct snd_ac97_template *ac97) { } static inline int olpc_quirks(struct snd_card *card, struct snd_ac97 *ac97) { return 0; } static inline void olpc_quirks_cleanup(void) { } static inline void olpc_analog_input(struct snd_ac97 *ac97, int on) { } static inline void olpc_mic_bias(struct snd_ac97 *ac97, int on) { } static inline void olpc_capture_open(struct snd_ac97 *ac97) { } static inline void olpc_capture_close(struct snd_ac97 *ac97) { } #endif int snd_cs5535audio_pcm(struct cs5535audio *cs5535audio); #endif /* __SOUND_CS5535AUDIO_H */ n>space:mode:
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/oss/v_midi.h
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/oss/v_midi.h')