kernel/sound/soc/intel/avs/ipc.c, branch linux-6.2.y

ASoC: Intel: avs: Introduce avs_log_buffer_status_locked()

2022-12-05T14:05:21Z

Simplify locking of firmware log gathering by providing single location for such purpose. Signed-off-by: Cezary Rojewski Link: https://lore.kernel.org/r/20221202152841.672536-5-cezary.rojewski@intel.com Signed-off-by: Mark Brown

ASoC: Intel: avs: Lock substream before snd_pcm_stop()

2022-11-22T19:32:26Z

snd_pcm_stop() shall be called with stream lock held to prevent any races between nonatomic streaming operations. Fixes: 2f1f570cd730 ("ASoC: Intel: avs: Coredump and recovery flow") Signed-off-by: Cezary Rojewski Link: https://lore.kernel.org/r/20221116115550.1100398-2-cezary.rojewski@intel.com Signed-off-by: Mark Brown

ASoC: Intel: avs: Simplify d0ix disabling routine

2022-10-17T11:50:11Z

No need to atomic_add_return(1) when there is atomic_inc_return() available. Signed-off-by: Cezary Rojewski Link: https://lore.kernel.org/r/20221010121955.718168-9-cezary.rojewski@intel.com Signed-off-by: Mark Brown

ASoC: Intel: avs: Fix potential RX buffer overflow

2022-10-17T11:50:05Z

If an event caused firmware to return invalid RX size for LARGE_CONFIG_GET, memcpy_fromio() could end up copying too many bytes. Fix by utilizing min_t(). Reported-by: CoolStar Fixes: f14a1c5a9f83 ("ASoC: Intel: avs: Add module management requests") Signed-off-by: Cezary Rojewski Link: https://lore.kernel.org/r/20221010121955.718168-3-cezary.rojewski@intel.com Signed-off-by: Mark Brown

ASoC: Intel: avs: Copy only as many RX bytes as necessary

2022-07-08T17:53:20Z

There is no need to copy number of bytes specified by IPC message caller if DSP firmware returned lower number. In consequence, LARGE_CONFIG_GET handler is simplified. Signed-off-by: Cezary Rojewski Link: https://lore.kernel.org/r/20220707124153.1858249-5-cezary.rojewski@intel.com Signed-off-by: Mark Brown

ASoC: Intel: avs: Event tracing

2022-05-17T10:58:01Z

Define tracing macros for easy avs debug. These cover all IPC message types: requests, replies and notifications as well as DSP-core operations and d0ix toggling. Signed-off-by: Amadeusz Sławiński Signed-off-by: Cezary Rojewski Link: https://lore.kernel.org/r/20220516101116.190192-10-cezary.rojewski@intel.com Signed-off-by: Mark Brown

ASoC: Intel: avs: D0ix power state support

2022-05-17T10:58:00Z

Audio DSP device supports D0 substates in form of D0ix, allowing for preserving more power even when device is still considered active (D0). When entered, certain domains which are not being currently used become power gated. Entering and leaving D0ix is a complex process and differs between firmware generations. Conditions that disallow D0i3 and require immediate D0i0 transition include but may not be limited to: IPC traffic, firmware tracing and SRAM I/O. To make D0ix toggling sane, delay D0i3 transition and refresh the timer each time an IPC is requested. Signed-off-by: Amadeusz Sławiński Signed-off-by: Cezary Rojewski Link: https://lore.kernel.org/r/20220516101116.190192-9-cezary.rojewski@intel.com Signed-off-by: Mark Brown

ASoC: Intel: avs: Prepare for firmware tracing

2022-05-17T10:57:59Z

Firmware provides its own debug functionality. While coredump is one of these, traces are the main area of interest. kfifo is enlisted to cache log data that is being pumped to driver through SRAM. Separate DSP operations are declared as actual feature implementation differs between firmware generations. As log gathering involves usage of IPCs, add all necessary: ENABLE_LOGS and SYSTEM_TIME. Signed-off-by: Amadeusz Sławiński Signed-off-by: Cezary Rojewski Link: https://lore.kernel.org/r/20220516101116.190192-8-cezary.rojewski@intel.com Signed-off-by: Mark Brown

ASoC: Intel: avs: Coredump and recovery flow

2022-05-17T10:57:58Z

In rare occasions, under stress conditions or hardware malfunction, DSP firmware may fail. Software is notified about such situation with EXCEPTION_CAUGHT notification. IPC timeout is also counted as critical device failure. More often than not, driver can recover from such situations by performing full reset: killing and restarting ADSP. Signed-off-by: Amadeusz Sławiński Signed-off-by: Cezary Rojewski Link: https://lore.kernel.org/r/20220516101116.190192-7-cezary.rojewski@intel.com Signed-off-by: Mark Brown

ASoC: Intel: avs: Add module management requests

2022-03-11T16:23:59Z

Firmware modules implement processing algorithms. Their lifecycle, similarly to pipelines is being controlled by IPCs: initialization, deletion and (un)binding. Modules can be configured at runtime - runtime parameters. This is done with help of LARGE_CONFIG IPCs: getter and setter. Due to firmware limitations, LARGE_CONFIG_GET handler implementation does not support retrieving payload with size larger than IPC inbox window size. Signed-off-by: Amadeusz Sławiński Signed-off-by: Cezary Rojewski Link: https://lore.kernel.org/r/20220311153544.136854-8-cezary.rojewski@intel.com Signed-off-by: Mark Brown