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/rt766-sdca.h | 140 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 140 insertions(+) create mode 100644 sound/soc/codecs/rt766-sdca.h (limited to 'sound/soc/codecs/rt766-sdca.h') diff --git a/sound/soc/codecs/rt766-sdca.h b/sound/soc/codecs/rt766-sdca.h new file mode 100644 index 000000000..de4064007 --- /dev/null +++ b/sound/soc/codecs/rt766-sdca.h @@ -0,0 +1,140 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * rt766-sdca.h -- RT766 SDCA ALSA SoC audio driver header + * + * Copyright(c) 2026 Realtek Semiconductor Corp. + */ + +#ifndef __RT766_H__ +#define __RT766_H__ + +#include +#include +#include +#include +#include +#include +#include + +struct rt766_sdca_priv { + struct regmap *regmap; + struct snd_soc_component *component; + struct sdw_slave *slave; + bool hw_init; + bool first_hw_init; + struct snd_soc_jack *hs_jack; + struct mutex disable_irq_lock; /* SDCA irq lock protection */ + bool disable_irq; + int jack_type; + bool fu41_dapm_mute; + bool fu41_mixer_l_mute; + bool fu41_mixer_r_mute; + bool fu113_dapm_mute; + bool fu113_mixer_mute[4]; + bool fu21_dapm_mute; + bool fu21_mixer_l_mute; + bool fu21_mixer_r_mute; + bool fu36_dapm_mute; + bool fu36_mixer_l_mute; + bool fu36_mixer_r_mute; + struct sdca_function_data *uaj_func_data; + struct sdca_function_data *sm_func_data; + struct sdca_function_data *sa_func_data; + struct sdca_function_data *hid_func_data; + struct sdca_interrupt_info *irq_info; + struct hid_device *hid; +}; + +/* vendor registers */ +#define RT766_VERSION_ID 0xc404 +#define RT766_DEV_ID1 0xc405 +#define RT766_DEV_ID0 0xc406 +#define RT766_BOND_LATCH_ID 0xc407 + +#define RT766_HP_POWER_STATE 0x1000004 +#define RT766_HP_FSM_CTL2_1 0x100000d + +/* MCU Patch address */ +#define RT766_MCU_PATCH_ADDR1_START 0x10010000 +#define RT766_MCU_PATCH_ADDR1_END 0x10011fff +#define RT766_MCU_PATCH_ADDR2_START 0x10020000 +#define RT766_MCU_PATCH_ADDR2_END 0x10023fff + +/* Buffer address for HID */ +#define RT766_BUF_ADDR_HID1 0x44030000 +#define RT766_BUF_ADDR_HID2 0x44030020 + +/* SDCA (Channel) */ +#define RT766_CH_1 0x01 +#define RT766_CH_2 0x02 +#define RT766_CH_3 0x03 +#define RT766_CH_4 0x04 + +/* RT766 SDCA Control - function number */ +#define RT766_FUNC_NUM_UAJ 0x01 +#define RT766_FUNC_NUM_MIC 0x02 +#define RT766_FUNC_NUM_HID 0x03 +#define RT766_FUNC_NUM_AMP 0x04 + +/* RT766 SDCA entity */ +#define RT766_SDCA_ENT_0 0x00 +#define RT766_SDCA_ENT_HID101 0x01 +#define RT766_SDCA_ENT_GE49 0x49 +#define RT766_SDCA_ENT_USER_FU41 0x05 +#define RT766_SDCA_ENT_USER_FU36 0x0f +#define RT766_SDCA_ENT_USER_FU21 0x03 +#define RT766_SDCA_ENT_USER_FU113 0x30 +#define RT766_SDCA_ENT_PDE23 0x33 +#define RT766_SDCA_ENT_PDE47 0x28 +#define RT766_SDCA_ENT_PDE11 0x2a +#define RT766_SDCA_ENT_PDE34 0x29 +#define RT766_SDCA_ENT_CS41 0x01 +#define RT766_SDCA_ENT_CS36 0x11 +#define RT766_SDCA_ENT_CS113 0x12 +#define RT766_SDCA_ENT_CS21 0x21 +#define RT766_SDCA_ENT_PLATFORM_FU33 0x44 +#define RT766_SDCA_ENT_PPU21 0x04 + +/* sample frequency index */ +#define RT766_SDCA_RATE_44100HZ 0x08 +#define RT766_SDCA_RATE_48000HZ 0x09 +#define RT766_SDCA_RATE_96000HZ 0x0b +#define RT766_SDCA_RATE_192000HZ 0x0d + +/* SDCA Register macros */ +#define RT766_MUTE_REG(func, fu, ch) \ + SDW_SDCA_CTL(RT766_FUNC_NUM_##func, RT766_SDCA_ENT_##fu, SDCA_CTL_FU_MUTE, RT766_CH_##ch) + +#define RT766_VOLUME_REG(func, fu, ch) \ + SDW_SDCA_CTL(RT766_FUNC_NUM_##func, RT766_SDCA_ENT_##fu, SDCA_CTL_FU_CHANNEL_VOLUME, RT766_CH_##ch) + +#define RT766_GAIN_REG(func, fu, ch) \ + SDW_SDCA_CTL(RT766_FUNC_NUM_##func, RT766_SDCA_ENT_##fu, SDCA_CTL_FU_GAIN, RT766_CH_##ch) + +#define RT766_PDE_REQ_REG(func, pde) \ + SDW_SDCA_CTL(RT766_FUNC_NUM_##func, RT766_SDCA_ENT_##pde, SDCA_CTL_PDE_REQUESTED_PS, 0) + +#define RT766_PDE_ACTUAL_REG(func, pde) \ + SDW_SDCA_CTL(RT766_FUNC_NUM_##func, RT766_SDCA_ENT_##pde, SDCA_CTL_PDE_ACTUAL_PS, 0) + +#define RT766_FUNC_STATUS_REG(func) \ + SDW_SDCA_CTL(RT766_FUNC_NUM_##func, RT766_SDCA_ENT_0, SDCA_CTL_ENTITY_0_FUNCTION_STATUS, 0) + +#define RT766_SDCA_CTL(func, ent, ctl) \ + SDW_SDCA_CTL(RT766_FUNC_NUM_##func, RT766_SDCA_ENT_##ent, ctl, 0) + +enum { + RT766_AIF1, + RT766_AIF2, + RT766_AIF3, +}; + +enum { + RT766_DAI_UAJ, + RT766_DAI_AMP, + RT766_DAI_MIC, +}; + +int rt766_sdca_io_init(struct device *dev, struct sdw_slave *slave); +int rt766_sdca_init(struct device *dev, struct regmap *regmap, struct sdw_slave *slave); +#endif /* __RT766_H__ */ -- cgit v1.3.1