122 lines
2.4 KiB
C
122 lines
2.4 KiB
C
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/****************************************************************************
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*
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* Copyright (c) 2014 - 2016 Samsung Electronics Co., Ltd. All rights reserved
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*
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****************************************************************************/
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#ifndef __MX_DBG_SAMPLER_H__
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#define __MX_DBG_SAMPLER_H__
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/**
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* Debug Sampler DRAM Buffer descriptor.
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*
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* Initialised by Debug Sampler Driver on AP and passed by
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* reference to Debug Sampler (Proxy) on R4 (by reference in
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* WLAN config).
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*
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* Integer fields are LittleEndian.
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*/
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struct debug_sampler_buffer_info {
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/**
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* Offset of circular octet buffer w.r.t. shared dram start
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*/
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uint32_t buf_offset;
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/**
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* Circular buffer length (octets, 2^n)
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*
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* Default = 32KiB default
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*/
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uint32_t buf_len;
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/**
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* Offset of 32bit write index (not wrapped, counts octets) w.r.t. shared dram start
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*/
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uint32_t write_index_offset;
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/**
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* To AP interrupt number (0 – 15)
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*/
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uint32_t intr_num;
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};
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struct debug_sampler_sample_spec {
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/**
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* -relative address of Location to sample (usually a register)
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*
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* Default = 0x00000000
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*/
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uint32_t source_addr;
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/**
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* Number of significant octets (1,2 or 4) to log (lsbytes from source)
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*
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* Default = 4
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*/
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uint32_t num_bytes;
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/**
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* Sampling period.
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*
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* 0 means as fast as possible (powers of 2 only)
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*
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* Default = 0
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*/
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uint32_t period_usecs;
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};
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/**
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* Debug Sampler Config Structure.
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*
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* This structure is allocated and initialised by the Debug Sampler driver
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* on the AP and passed via the service_start message.
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*/
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struct debug_sampler_config {
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/**
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* Config Structure Version (= DBGSAMPLER_CONFIG_VERSION)
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*
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* Set by driver, checked by service.
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*/
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uint32_t version;
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/**
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* To-host circular buffer desciptor.
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*/
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struct debug_sampler_buffer_info buffer_info;
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/**
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* Init/default sampling specification.
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*
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* (There is also an API on R4 to allow dynamic specification
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* change - e.g. by WLAN service)
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*/
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struct debug_sampler_sample_spec sample_spec;
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/**
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* Start/stop sampling when service is started/stopped?
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*
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* (There is also an API on R4 to allow dynamic start/stop
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* - e.g. by WLAN service)
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*
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* Default = 0
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*/
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uint32_t auto_start;
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};
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struct debug_sampler_align {
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struct debug_sampler_config config __aligned(4);
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u32 index;
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void *mem __aligned(64);
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};
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#endif /* __MX_DBG_SAMPLER_H__ */
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