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https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-09-18 23:09:29 +02:00
Peter Ujfalusi
34d466aaa0
On ACE2+ platforms the link DMA stream allocator must avoid two hardware errata in mlink-capable systems: - Concurrent (cross-direction) hazard: when SoundWire shares a physical link DMA stream index with HDaudio, iDisp or UAOL across the two directions, the LLP and timestamp values for the affected stream are wrong. SSP and DMIC are not affected because every DMA request from those links carries one sample block. - Sequential (playback only) hazard: once a HDaudio or iDisp link has used a playback stream index, that index cannot drive any non HDA/iDisp link in the same direction until the next controller reset (CRST#). Track the active link type per direction in two masks (one for SoundWire, one for HDA/iDisp/UAOL) and the persistent set of playback stream indices touched by HDA/iDisp in a third mask. The link DMA allocator skips streams that would violate either rule. Streams are released from the active masks when the stream is released; all masks are cleared in hda_dsp_ctrl_init_chip() because the CRST# performed there clears the hardware state as well. A new helper hda_bus_ml_link_get_type() returns the link type from the existing extended link descriptor so the SOF allocator can tell SoundWire, HDA/iDisp and UAOL apart without duplicating the parsing. The implementation is generic. On platforms older than ACE2 every link is reported as HDA, only the sequential mask is ever set and it has no effect because no other link types are present, so behavior is unchanged. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com> Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com> Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com> Reviewed-by: Liam Girdwood <liam.r.girdwood@intel.com> Link: https://patch.msgid.link/20260730125130.29887-5-peter.ujfalusi@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
232 lines
7.6 KiB
C
232 lines
7.6 KiB
C
/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
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/*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* Copyright(c) 2022-2023 Intel Corporation
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*/
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struct hdac_bus;
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struct hdac_ext_link;
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/**
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* enum hda_bus_ml_link_type - mlink link type, used by SOF link DMA
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* allocator constraints (see struct sof_intel_hda_dev).
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*
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* @HDA_BUS_ML_LINK_HDA: non-alt link, i.e. HDA codec or iDisp
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* @HDA_BUS_ML_LINK_SDW: alt link, SoundWire
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* @HDA_BUS_ML_LINK_UAOL: alt link, USB Audio Offload
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* @HDA_BUS_ML_LINK_OTHER: alt link, SSP or DMIC
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*/
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enum hda_bus_ml_link_type {
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HDA_BUS_ML_LINK_HDA,
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HDA_BUS_ML_LINK_SDW,
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HDA_BUS_ML_LINK_UAOL,
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HDA_BUS_ML_LINK_OTHER,
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};
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#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_MLINK)
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int hda_bus_ml_init(struct hdac_bus *bus);
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void hda_bus_ml_free(struct hdac_bus *bus);
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int hdac_bus_eml_get_count(struct hdac_bus *bus, bool alt, int elid);
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void hdac_bus_eml_enable_interrupt_unlocked(struct hdac_bus *bus, bool alt, int elid, bool enable);
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void hdac_bus_eml_enable_interrupt(struct hdac_bus *bus, bool alt, int elid, bool enable);
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bool hdac_bus_eml_check_interrupt(struct hdac_bus *bus, bool alt, int elid);
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int hdac_bus_eml_set_syncprd_unlocked(struct hdac_bus *bus, bool alt, int elid, u32 syncprd);
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int hdac_bus_eml_sdw_set_syncprd_unlocked(struct hdac_bus *bus, u32 syncprd);
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int hdac_bus_eml_wait_syncpu_unlocked(struct hdac_bus *bus, bool alt, int elid);
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int hdac_bus_eml_sdw_wait_syncpu_unlocked(struct hdac_bus *bus);
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void hdac_bus_eml_sync_arm_unlocked(struct hdac_bus *bus, bool alt, int elid, int sublink);
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void hdac_bus_eml_sdw_sync_arm_unlocked(struct hdac_bus *bus, int sublink);
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int hdac_bus_eml_sync_go_unlocked(struct hdac_bus *bus, bool alt, int elid);
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int hdac_bus_eml_sdw_sync_go_unlocked(struct hdac_bus *bus);
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bool hdac_bus_eml_check_cmdsync_unlocked(struct hdac_bus *bus, bool alt, int elid);
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bool hdac_bus_eml_sdw_check_cmdsync_unlocked(struct hdac_bus *bus);
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int hdac_bus_eml_power_up(struct hdac_bus *bus, bool alt, int elid, int sublink);
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int hdac_bus_eml_power_up_unlocked(struct hdac_bus *bus, bool alt, int elid, int sublink);
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int hdac_bus_eml_power_down(struct hdac_bus *bus, bool alt, int elid, int sublink);
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int hdac_bus_eml_power_down_unlocked(struct hdac_bus *bus, bool alt, int elid, int sublink);
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int hdac_bus_eml_sdw_power_up_unlocked(struct hdac_bus *bus, int sublink);
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int hdac_bus_eml_sdw_power_down_unlocked(struct hdac_bus *bus, int sublink);
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int hdac_bus_eml_sdw_get_lsdiid_unlocked(struct hdac_bus *bus, int sublink, u16 *lsdiid);
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int hdac_bus_eml_sdw_set_lsdiid(struct hdac_bus *bus, int sublink, int dev_num);
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int hdac_bus_eml_sdw_map_stream_ch(struct hdac_bus *bus, int sublink, int y,
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int channel_mask, int stream_id, int dir);
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void hda_bus_ml_reset_losidv(struct hdac_bus *bus);
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int hda_bus_ml_resume(struct hdac_bus *bus);
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int hda_bus_ml_suspend(struct hdac_bus *bus);
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enum hda_bus_ml_link_type hda_bus_ml_link_get_type(struct hdac_ext_link *hlink);
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struct hdac_ext_link *hdac_bus_eml_ssp_get_hlink(struct hdac_bus *bus);
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struct hdac_ext_link *hdac_bus_eml_dmic_get_hlink(struct hdac_bus *bus);
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struct hdac_ext_link *hdac_bus_eml_sdw_get_hlink(struct hdac_bus *bus);
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struct mutex *hdac_bus_eml_get_mutex(struct hdac_bus *bus, bool alt, int elid);
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void hdac_bus_eml_enable_offload(struct hdac_bus *bus, bool alt, int elid, bool enable);
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/* microphone privacy specific function supported by ACE3+ architecture */
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void hdac_bus_eml_set_mic_privacy_mask(struct hdac_bus *bus, bool alt, int elid,
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unsigned long mask);
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bool hdac_bus_eml_is_mic_privacy_changed(struct hdac_bus *bus, bool alt, int elid);
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bool hdac_bus_eml_get_mic_privacy_state(struct hdac_bus *bus, bool alt, int elid);
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#else
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static inline int
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hda_bus_ml_init(struct hdac_bus *bus) { return 0; }
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static inline void hda_bus_ml_free(struct hdac_bus *bus) { }
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static inline int
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hdac_bus_eml_get_count(struct hdac_bus *bus, bool alt, int elid) { return 0; }
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static inline void
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hdac_bus_eml_enable_interrupt_unlocked(struct hdac_bus *bus, bool alt, int elid, bool enable) { }
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static inline void
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hdac_bus_eml_enable_interrupt(struct hdac_bus *bus, bool alt, int elid, bool enable) { }
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static inline bool
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hdac_bus_eml_check_interrupt(struct hdac_bus *bus, bool alt, int elid) { return false; }
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static inline int
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hdac_bus_eml_set_syncprd_unlocked(struct hdac_bus *bus, bool alt, int elid, u32 syncprd)
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{
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return 0;
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}
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static inline int
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hdac_bus_eml_sdw_set_syncprd_unlocked(struct hdac_bus *bus, u32 syncprd)
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{
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return 0;
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}
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static inline int
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hdac_bus_eml_wait_syncpu_unlocked(struct hdac_bus *bus, bool alt, int elid)
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{
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return 0;
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}
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static inline int
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hdac_bus_eml_sdw_wait_syncpu_unlocked(struct hdac_bus *bus) { return 0; }
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static inline void
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hdac_bus_eml_sync_arm_unlocked(struct hdac_bus *bus, bool alt, int elid, int sublink) { }
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static inline void
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hdac_bus_eml_sdw_sync_arm_unlocked(struct hdac_bus *bus, int sublink) { }
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static inline int
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hdac_bus_eml_sync_go_unlocked(struct hdac_bus *bus, bool alt, int elid) { return 0; }
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static inline int
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hdac_bus_eml_sdw_sync_go_unlocked(struct hdac_bus *bus) { return 0; }
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static inline bool
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hdac_bus_eml_check_cmdsync_unlocked(struct hdac_bus *bus, bool alt, int elid) { return false; }
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static inline bool
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hdac_bus_eml_sdw_check_cmdsync_unlocked(struct hdac_bus *bus) { return false; }
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static inline int
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hdac_bus_eml_power_up(struct hdac_bus *bus, bool alt, int elid, int sublink)
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{
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return 0;
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}
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static inline int
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hdac_bus_eml_power_up_unlocked(struct hdac_bus *bus, bool alt, int elid, int sublink)
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{
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return 0;
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}
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static inline int
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hdac_bus_eml_power_down(struct hdac_bus *bus, bool alt, int elid, int sublink)
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{
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return 0;
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}
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static inline int
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hdac_bus_eml_power_down_unlocked(struct hdac_bus *bus, bool alt, int elid, int sublink)
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{
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return 0;
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}
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static inline int
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hdac_bus_eml_sdw_power_up_unlocked(struct hdac_bus *bus, int sublink) { return 0; }
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static inline int
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hdac_bus_eml_sdw_power_down_unlocked(struct hdac_bus *bus, int sublink) { return 0; }
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static inline int
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hdac_bus_eml_sdw_get_lsdiid_unlocked(struct hdac_bus *bus, int sublink, u16 *lsdiid) { return 0; }
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static inline int
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hdac_bus_eml_sdw_set_lsdiid(struct hdac_bus *bus, int sublink, int dev_num) { return 0; }
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static inline int
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hdac_bus_eml_sdw_map_stream_ch(struct hdac_bus *bus, int sublink, int y,
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int channel_mask, int stream_id, int dir)
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{
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return 0;
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}
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static inline void hda_bus_ml_reset_losidv(struct hdac_bus *bus) { }
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static inline int hda_bus_ml_resume(struct hdac_bus *bus) { return 0; }
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static inline int hda_bus_ml_suspend(struct hdac_bus *bus) { return 0; }
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static inline enum hda_bus_ml_link_type
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hda_bus_ml_link_get_type(struct hdac_ext_link *hlink) { return HDA_BUS_ML_LINK_HDA; }
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static inline struct hdac_ext_link *
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hdac_bus_eml_ssp_get_hlink(struct hdac_bus *bus) { return NULL; }
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static inline struct hdac_ext_link *
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hdac_bus_eml_dmic_get_hlink(struct hdac_bus *bus) { return NULL; }
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static inline struct hdac_ext_link *
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hdac_bus_eml_sdw_get_hlink(struct hdac_bus *bus) { return NULL; }
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static inline struct mutex *
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hdac_bus_eml_get_mutex(struct hdac_bus *bus, bool alt, int elid) { return NULL; }
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static inline void
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hdac_bus_eml_enable_offload(struct hdac_bus *bus, bool alt, int elid, bool enable)
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{
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}
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static inline void
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hdac_bus_eml_set_mic_privacy_mask(struct hdac_bus *bus, bool alt, int elid,
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unsigned long mask)
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{
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}
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static inline bool
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hdac_bus_eml_is_mic_privacy_changed(struct hdac_bus *bus, bool alt, int elid)
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{
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return false;
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}
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static inline bool
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hdac_bus_eml_get_mic_privacy_state(struct hdac_bus *bus, bool alt, int elid)
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{
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return false;
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}
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#endif /* CONFIG_SND_SOC_SOF_HDA_MLINK */
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