From 6668ed271eaefaa63e686bdfbedaeb7b8e492722 Mon Sep 17 00:00:00 2001 From: Kumar Kartikeya Dwivedi Date: Fri, 4 Sep 2026 10:43:19 +0200 Subject: selftests/bpf: Reject graph kptr use after RCU unlock Add a sleepable verifier test that loads a graph-node local kptr in an explicit RCU read-side critical section, then passes its node to bpf_rbtree_remove() after the section ends. Before the verifier fix, the stale NON_OWN_REF flag makes the node look like a live borrowed reference and the program is accepted. After the fix, the pointer is demoted without NON_OWN_REF and the graph kfunc argument is rejected. Also exercise a graph kptr loaded while a spin lock provides implicit RCU protection. The pointer must be invalidated when the lock is released, which guards the required ordering between non-owning-reference invalidation and RCU demotion. Update the existing fault-protected load test state description. The post-unlock pointer no longer carries NON_OWN_REF, but remains readable because the load is rewritten to use BPF_PROBE_MEM. Signed-off-by: Kumar Kartikeya Dwivedi Link: https://lore.kernel.org/r/20260904084325.52250-7-memxor@gmail.com Signed-off-by: Alexei Starovoitov --- sound/soc/codecs/rt298.h | 211 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 211 insertions(+) create mode 100644 sound/soc/codecs/rt298.h (limited to 'sound/soc/codecs/rt298.h') diff --git a/sound/soc/codecs/rt298.h b/sound/soc/codecs/rt298.h new file mode 100644 index 000000000..f1be9c135 --- /dev/null +++ b/sound/soc/codecs/rt298.h @@ -0,0 +1,211 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * rt298.h -- RT298 ALSA SoC audio driver + * + * Copyright 2011 Realtek Microelectronics + * Author: Johnny Hsu + */ + +#ifndef __RT298_H__ +#define __RT298_H__ + +#define VERB_CMD(V, N, D) ((N << 20) | (V << 8) | D) + +#define RT298_AUDIO_FUNCTION_GROUP 0x01 +#define RT298_DAC_OUT1 0x02 +#define RT298_DAC_OUT2 0x03 +#define RT298_DIG_CVT 0x06 +#define RT298_ADC_IN1 0x09 +#define RT298_ADC_IN2 0x08 +#define RT298_MIXER_IN 0x0b +#define RT298_MIXER_OUT1 0x0c +#define RT298_MIXER_OUT2 0x0d +#define RT298_DMIC1 0x12 +#define RT298_DMIC2 0x13 +#define RT298_SPK_OUT 0x14 +#define RT298_MIC1 0x18 +#define RT298_LINE1 0x1a +#define RT298_BEEP 0x1d +#define RT298_SPDIF 0x1e +#define RT298_VENDOR_REGISTERS 0x20 +#define RT298_HP_OUT 0x21 +#define RT298_MIXER_IN1 0x22 +#define RT298_MIXER_IN2 0x23 +#define RT298_INLINE_CMD 0x55 + +#define RT298_SET_PIN_SFT 6 +#define RT298_SET_PIN_ENABLE 0x40 +#define RT298_SET_PIN_DISABLE 0 +#define RT298_SET_EAPD_HIGH 0x2 +#define RT298_SET_EAPD_LOW 0 + +#define RT298_MUTE_SFT 7 + +/* Verb commands */ +#define RT298_GET_PARAM(NID, PARAM) VERB_CMD(AC_VERB_PARAMETERS, NID, PARAM) +#define RT298_SET_POWER(NID) VERB_CMD(AC_VERB_SET_POWER_STATE, NID, 0) +#define RT298_SET_AUDIO_POWER RT298_SET_POWER(RT298_AUDIO_FUNCTION_GROUP) +#define RT298_SET_HPO_POWER RT298_SET_POWER(RT298_HP_OUT) +#define RT298_SET_SPK_POWER RT298_SET_POWER(RT298_SPK_OUT) +#define RT298_SET_DMIC1_POWER RT298_SET_POWER(RT298_DMIC1) +#define RT298_SPK_MUX\ + VERB_CMD(AC_VERB_SET_CONNECT_SEL, RT298_SPK_OUT, 0) +#define RT298_HPO_MUX\ + VERB_CMD(AC_VERB_SET_CONNECT_SEL, RT298_HP_OUT, 0) +#define RT298_ADC0_MUX\ + VERB_CMD(AC_VERB_SET_CONNECT_SEL, RT298_MIXER_IN1, 0) +#define RT298_ADC1_MUX\ + VERB_CMD(AC_VERB_SET_CONNECT_SEL, RT298_MIXER_IN2, 0) +#define RT298_SET_MIC1\ + VERB_CMD(AC_VERB_SET_PIN_WIDGET_CONTROL, RT298_MIC1, 0) +#define RT298_SET_PIN_HPO\ + VERB_CMD(AC_VERB_SET_PIN_WIDGET_CONTROL, RT298_HP_OUT, 0) +#define RT298_SET_PIN_SPK\ + VERB_CMD(AC_VERB_SET_PIN_WIDGET_CONTROL, RT298_SPK_OUT, 0) +#define RT298_SET_PIN_DMIC1\ + VERB_CMD(AC_VERB_SET_PIN_WIDGET_CONTROL, RT298_DMIC1, 0) +#define RT298_SET_PIN_SPDIF\ + VERB_CMD(AC_VERB_SET_PIN_WIDGET_CONTROL, RT298_SPDIF, 0) +#define RT298_SET_PIN_DIG_CVT\ + VERB_CMD(AC_VERB_SET_DIGI_CONVERT_1, RT298_DIG_CVT, 0) +#define RT298_SPK_EAPD\ + VERB_CMD(AC_VERB_SET_EAPD_BTLENABLE, RT298_SPK_OUT, 0) +#define RT298_SET_AMP_GAIN_HPO\ + VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_HP_OUT, 0) +#define RT298_SET_AMP_GAIN_ADC_IN1\ + VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_ADC_IN1, 0) +#define RT298_SET_AMP_GAIN_ADC_IN2\ + VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_ADC_IN2, 0) +#define RT298_GET_HP_SENSE\ + VERB_CMD(AC_VERB_GET_PIN_SENSE, RT298_HP_OUT, 0) +#define RT298_GET_MIC1_SENSE\ + VERB_CMD(AC_VERB_GET_PIN_SENSE, RT298_MIC1, 0) +#define RT298_SET_DMIC2_DEFAULT\ + VERB_CMD(AC_VERB_SET_CONFIG_DEFAULT_BYTES_3, RT298_DMIC2, 0) +#define RT298_SET_SPDIF_DEFAULT\ + VERB_CMD(AC_VERB_SET_CONFIG_DEFAULT_BYTES_3, RT298_SPDIF, 0) +#define RT298_DACL_GAIN\ + VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_DAC_OUT1, 0xa000) +#define RT298_DACR_GAIN\ + VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_DAC_OUT1, 0x9000) +#define RT298_ADCL_GAIN\ + VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_ADC_IN1, 0x6000) +#define RT298_ADCR_GAIN\ + VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_ADC_IN1, 0x5000) +#define RT298_MIC_GAIN\ + VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_MIC1, 0x7000) +#define RT298_SPOL_GAIN\ + VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_SPK_OUT, 0xa000) +#define RT298_SPOR_GAIN\ + VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_SPK_OUT, 0x9000) +#define RT298_HPOL_GAIN\ + VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_HP_OUT, 0xa000) +#define RT298_HPOR_GAIN\ + VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_HP_OUT, 0x9000) +#define RT298_F_DAC_SWITCH\ + VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_MIXER_OUT1, 0x7000) +#define RT298_F_RECMIX_SWITCH\ + VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_MIXER_OUT1, 0x7100) +#define RT298_REC_MIC_SWITCH\ + VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_MIXER_IN, 0x7000) +#define RT298_REC_I2S_SWITCH\ + VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_MIXER_IN, 0x7100) +#define RT298_REC_LINE_SWITCH\ + VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_MIXER_IN, 0x7200) +#define RT298_REC_BEEP_SWITCH\ + VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_MIXER_IN, 0x7300) +#define RT298_DAC_FORMAT\ + VERB_CMD(AC_VERB_SET_STREAM_FORMAT, RT298_DAC_OUT1, 0) +#define RT298_ADC_FORMAT\ + VERB_CMD(AC_VERB_SET_STREAM_FORMAT, RT298_ADC_IN1, 0) +#define RT298_COEF_INDEX\ + VERB_CMD(AC_VERB_SET_COEF_INDEX, RT298_VENDOR_REGISTERS, 0) +#define RT298_PROC_COEF\ + VERB_CMD(AC_VERB_SET_PROC_COEF, RT298_VENDOR_REGISTERS, 0) +#define RT298_UNSOLICITED_INLINE_CMD\ + VERB_CMD(AC_VERB_SET_UNSOLICITED_ENABLE, RT298_INLINE_CMD, 0) +#define RT298_UNSOLICITED_HP_OUT\ + VERB_CMD(AC_VERB_SET_UNSOLICITED_ENABLE, RT298_HP_OUT, 0) +#define RT298_UNSOLICITED_MIC1\ + VERB_CMD(AC_VERB_SET_UNSOLICITED_ENABLE, RT298_MIC1, 0) + +/* Index registers */ +#define RT298_A_BIAS_CTRL1 0x01 +#define RT298_A_BIAS_CTRL2 0x02 +#define RT298_POWER_CTRL1 0x03 +#define RT298_A_BIAS_CTRL3 0x04 +#define RT298_D_FILTER_CTRL 0x05 +#define RT298_POWER_CTRL2 0x08 +#define RT298_I2S_CTRL1 0x09 +#define RT298_I2S_CTRL2 0x0a +#define RT298_CLK_DIV 0x0b +#define RT298_DC_GAIN 0x0d +#define RT298_POWER_CTRL3 0x0f +#define RT298_MIC1_DET_CTRL 0x19 +#define RT298_MISC_CTRL1 0x20 +#define RT298_IRQ_CTRL 0x33 +#define RT298_WIND_FILTER_CTRL 0x46 +#define RT298_PLL_CTRL1 0x49 +#define RT298_VAD_CTRL 0x4e +#define RT298_CBJ_CTRL1 0x4f +#define RT298_CBJ_CTRL2 0x50 +#define RT298_PLL_CTRL 0x63 +#define RT298_DEPOP_CTRL1 0x66 +#define RT298_DEPOP_CTRL2 0x67 +#define RT298_DEPOP_CTRL3 0x68 +#define RT298_DEPOP_CTRL4 0x69 +#define RT298_IRQ_FLAG_CTRL 0x7c + +/* SPDIF (0x06) */ +#define RT298_SPDIF_SEL_SFT 0 +#define RT298_SPDIF_SEL_PCM0 0 +#define RT298_SPDIF_SEL_PCM1 1 +#define RT298_SPDIF_SEL_SPOUT 2 +#define RT298_SPDIF_SEL_PP 3 + +/* RECMIX (0x0b) */ +#define RT298_M_REC_BEEP_SFT 0 +#define RT298_M_REC_LINE1_SFT 1 +#define RT298_M_REC_MIC1_SFT 2 +#define RT298_M_REC_I2S_SFT 3 + +/* Front (0x0c) */ +#define RT298_M_FRONT_DAC_SFT 0 +#define RT298_M_FRONT_REC_SFT 1 + +/* SPK-OUT (0x14) */ +#define RT298_M_SPK_MUX_SFT 14 +#define RT298_SPK_SEL_MASK 0x1 +#define RT298_SPK_SEL_SFT 0 +#define RT298_SPK_SEL_F 0 +#define RT298_SPK_SEL_S 1 + +/* HP-OUT (0x21) */ +#define RT298_M_HP_MUX_SFT 14 +#define RT298_HP_SEL_MASK 0x1 +#define RT298_HP_SEL_SFT 0 +#define RT298_HP_SEL_F 0 +#define RT298_HP_SEL_S 1 + +/* ADC (0x22) (0x23) */ +#define RT298_ADC_SEL_MASK 0x7 +#define RT298_ADC_SEL_SFT 0 +#define RT298_ADC_SEL_SURR 0 +#define RT298_ADC_SEL_FRONT 1 +#define RT298_ADC_SEL_DMIC 2 +#define RT298_ADC_SEL_BEEP 4 +#define RT298_ADC_SEL_LINE1 5 +#define RT298_ADC_SEL_I2S 6 +#define RT298_ADC_SEL_MIC1 7 + +#define RT298_SCLK_S_MCLK 0 +#define RT298_SCLK_S_PLL 1 + +enum { + RT298_AIF1, + RT298_AIF2, + RT298_AIFS, +}; + +#endif /* __RT298_H__ */ + -- cgit v1.3.1