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OVMS3-idf/components/app_trace/app_trace.c
Alexey Gerenkov 8d43859b6a esp32: SEGGER SystemView Tracing Support 
Implements support for system level traces compatible with SEGGER
SystemView tool on top of ESP32 application tracing module.
That kind of traces can help to analyse program's behaviour.
SystemView can show timeline of tasks/ISRs execution, context switches,
statistics related to the CPUs' load distribution etc.

Also this commit adds useful feature to ESP32 application tracing module:
 - Trace data buffering is implemented to handle temporary peaks of events load
2017-06-27 20:52:43 +03:00

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// Copyright 2017 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// Hot It Works
// ************
// 1. Components Overview
// ======================
// Xtensa has useful feature: TRAX debug module. It allows recording program execution flow at run-time without disturbing CPU.
// Exectution flow data are written to configurable Trace RAM block. Besides accessing Trace RAM itself TRAX module also allows to read/write
// trace memory via its registers by means of JTAG, APB or ERI transactions.
// ESP32 has two Xtensa cores with separate TRAX modules on them and provides two special memory regions to be used as trace memory.
// Chip allows muxing access to those trace memory blocks in such a way that while one block is accessed by CPUs another one can be accessed by host
// by means of reading/writing TRAX registers via JTAG. Blocks muxing is configurable at run-time and allows switching trace memory blocks between
// accessors in round-robin fashion so they can read/write separate memory blocks without disturbing each other.
// This module implements application tracing feature based on above mechanisms. It allows to transfer arbitrary user data to/from
// host via JTAG with minimal impact on system performance. This module is implied to be used in the following tracing scheme.
// ------>------ ----- (host components) -----
// | | | |
// ------------------- ----------------------- ----------------------- ---------------- ------ --------- -----------------
// |trace data source|-->|target tracing module|<--->|TRAX_MEM0 | TRAX_MEM1|---->|TRAX_DATA_REGS|<-->|JTAG|<--->|OpenOCD|-->|trace data sink|
// ------------------- ----------------------- ----------------------- ---------------- ------ --------- -----------------
// | | | |
// | ------<------ ---------------- |
// |<------------------------------------------->|TRAX_CTRL_REGS|<---->|
// ----------------
// In general tracing goes in the following way. User aplication requests tracing module to send some data by calling esp_apptrace_buffer_get(),
// module allocates necessary buffer in current input trace block. Then user fills received buffer with data and calls esp_apptrace_buffer_put().
// When current input trace block is filled with app data it is exposed to host and the second block becomes input one and buffer filling restarts.
// While target application fills one TRAX block host reads another one via JTAG.
// This module also allows communication in the opposite direction: from host to target. As it was said ESP32 and host can access different TRAX blocks
// simultaneously, so while target writes trace data to one block host can write its own data (e.g. tracing commands) to another one then when
// blocks are switched host receives trace data and target receives data written by host application. Target user application can read host data
// by calling esp_apptrace_read() API.
// To control buffer switching and for other communication purposes this implementation uses some TRAX registers. It is safe since HW TRAX tracing
// can not be used along with application tracing feature so these registers are freely readable/writeable via JTAG from host and via ERI from ESP32 cores.
// Overhead of this implementation on target CPU is produced only by allocating/managing buffers and copying of data.
// On the host side special OpenOCD command must be used to read trace data.
// 2. TRAX Registers layout
// ========================
// This module uses two TRAX HW registers to communicate with host SW (OpenOCD).
// - Control register uses TRAX_DELAYCNT as storage. Only lower 24 bits of TRAX_DELAYCNT are writable. Control register has the following bitfields:
// | 31..XXXXXX..24 | 23 .(host_connect). 23| 22..(block_id)..15 | 14..(block_len)..0 |
// 14..0 bits - actual length of user data in trace memory block. Target updates it every time it fills memory block and exposes it to host.
// Host writes zero to this field when it finishes reading exposed block;
// 21..15 bits - trace memory block transfer ID. Block counter. It can overflow. Updated by target, host should not modify it. Actually can be 2 bits;
// 22 bit - 'host data present' flag. If set to one there is data from host, otherwise - no host data;
// 23 bit - 'host connected' flag. If zero then host is not connected and tracing module works in post-mortem mode, otherwise in streaming mode;
// - Status register uses TRAX_TRIGGERPC as storage. If this register is not zero then currentlly CPU is changing TRAX registers and
// this register holds address of the instruction which application will execute when it finishes with those registers modifications.
// See 'Targets Connection' setion for details.
// 3. Modes of operation
// =====================
// This module supports two modes of operation:
// - Post-mortem mode. This is the default mode. In this mode application tracing module does not check whether host has read all the data from block
// exposed to it and switches block in any case. The mode does not need host interaction for operation and so can be useful when only the latest
// trace data are necessary, e.g. for analyzing crashes. On panic the latest data from current input block are exposed to host and host can read them.
// It can happen that system panic occurs when there are very small amount of data which are not exposed to host yet (e.g. crash just after the
// TRAX block switch). In this case the previous 16KB of collected data will be dropped and host will see the latest, but very small piece of trace.
// It can be insufficient to diagnose the problem. To avoid such situations there is menuconfig option CONFIG_ESP32_APPTRACE_POSTMORTEM_FLUSH_TRAX_THRESH
// which controls the threshold for flushing data in case of panic.
// - Streaming mode. Tracing module enters this mode when host connects to target and sets respective bits in control registers (per core).
// In this mode before switching the block tracing module waits for the host to read all the data from the previously exposed block.
// On panic tracing module also waits (timeout is configured via menuconfig via CONFIG_ESP32_APPTRACE_ONPANIC_HOST_FLUSH_TMO) for the host to read all data.
// 4. Communication Protocol
// =========================
// 4.1 Trace Memory Blocks
// -----------------------
// Communication is controlled via special register. Host periodically polls control register on each core to find out if there are any data avalable.
// When current input memory block is filled it is exposed to host and 'block_len' and 'block_id' fields are updated in the control register.
// Host reads new register value and according to it's value starts reading data from exposed block. Meanwhile target starts filling another trace block.
// When host finishes reading the block it clears 'block_len' field in control register indicating to the target that it is ready to accept the next one.
// If the host has some data to transfer to the target it writes them to trace memory block before clearing 'block_len' field. Then it sets
// 'host_data_present' bit and clears 'block_len' field in control register. Upon every block switch target checks 'host_data_present' bit and if it is set
// reads them to down buffer before writing any trace data to switched TRAX block.
// 4.2 User Data Chunks Level
// --------------------------
// Since trace memory block is shared between user data chunks and data copying is performed on behalf of the API user (in its normal context) in
// multithreading environment it can happen that task/ISR which copies data is preempted by another high prio task/ISR. So it is possible situation
// that task/ISR will fail to complete filling its data chunk before the whole trace block is exposed to the host. To handle such conditions tracing
// module prepends all user data chunks with header which contains allocated buffer size and actual data length within it. OpenOCD command
// which reads application traces reports error when it reads incompleted user data block.
// Data which are transfered from host to target are also prepended with such header.
// 4.3 Data Buffering
// ------------------
// It takes some time for the host to read TRAX memory block via JTAG. In streaming mode it can happen that target has filled its TRAX block, but host
// has not completed reading of the previous one yet. So in this case time critical tracing calls (which can not be delayed for too long time due to
// the lack of free memory in TRAX block) can be dropped. To avoid such scenarios tracing module implements data buffering. Buffered data will be sent
// to the host later when TRAX block switch occurs. The maximum size of the buffered data is controlled by menuconfig option
// CONFIG_ESP32_APPTRACE_PENDING_DATA_SIZE_MAX.
// 4.4 Target Connection/Disconnection
// -----------------------------------
// When host is going to start tracing in streaming mode it needs to put both ESP32 cores into initial state when 'host connected' bit is set
// on both cores. To accomplish this host halts both cores and sets this bit in TRAX registers. But target code can be halted in state when it has read control
// register but has not updated its value. To handle such situations target code indicates to the host that it is updating control register by writing
// non-zero value to status register. Actually it writes address of the instruction which it will execute when it finishes with
// the registers update. When target is halted during control register update host sets breakpoint at the address from status register and resumes CPU.
// After target code finishes with register update it is halted on breakpoint, host detects it and safely sets 'host connected' bit. When both cores
// are set up they are resumed. Tracing starts without further intrusion into CPUs work.
// When host is going to stop tracing in streaming mode it needs to disconnect targets. Disconnection process is done using the same algorithm
// as for connecting, but 'host connected' bits are cleared on ESP32 cores.
// 5. Module Access Synchronization
// ================================
// Access to internal module's data is synchronized with custom mutex. Mutex is a wrapper for portMUX_TYPE and uses almost the same sync mechanism as in
// vPortCPUAcquireMutex/vPortCPUReleaseMutex. The mechanism uses S32C1I Xtensa instruction to implement exclusive access to module's data from tasks and
// ISRs running on both cores. Also custom mutex allows specifying timeout for locking operation. Locking routine checks underlaying mutex in cycle until
// it gets its ownership or timeout expires. The differences of application tracing module's mutex implementation from vPortCPUAcquireMutex/vPortCPUReleaseMutex are:
// - Support for timeouts.
// - Local IRQs for CPU which owns the mutex are disabled till the call to unlocking routine. This is made to avoid possible task's prio inversion.
// When low prio task takes mutex and enables local IRQs gets preempted by high prio task which in its turn can try to acquire mutex using infinite timeout.
// So no local task switch occurs when mutex is locked. But this does not apply to tasks on another CPU.
// WARNING: Priority inversion can happen when low prio task works on one CPU and medium and high prio tasks work on another.
// WARNING: Care must be taken when selecting timeout values for trace calls from ISRs. Tracing module does not care about watchdogs when waiting
// on internal locks and for host to complete previous block reading, so if timeout value exceedes watchdog's one it can lead to the system reboot.
// 6. Timeouts
// ===========
// Timeout mechanism is based on xthal_get_ccount() routine and supports timeout values in micorseconds.
// There are two situations when task/ISR can be delayed by tracing API call. Timeout mechanism takes into account both conditions:
// - Trace data are locked by another task/ISR. When wating on trace data lock.
// - Current TRAX memory input block is full when working in streaming mode (host is connected). When waiting for host to complete previous block reading.
// When wating for any of above conditions xthal_get_ccount() is called periodically to calculate time elapsed from trace API routine entry. When elapsed
// time exceeds specified timeout value operation is canceled and ESP_ERR_TIMEOUT code is returned.
// ALSO SEE example usage of application tracing module in 'components/app_trace/README.rst'
#include <string.h>
#include "soc/soc.h"
#include "soc/dport_reg.h"
#include "eri.h"
#include "trax.h"
#include "freertos/FreeRTOS.h"
#include "freertos/portmacro.h"
#include "freertos/semphr.h"
#include "freertos/task.h"
#include "soc/timer_group_struct.h"
#include "soc/timer_group_reg.h"
#include "esp_app_trace.h"
#include "esp_app_trace_util.h"
#if CONFIG_ESP32_APPTRACE_ENABLE
#define ESP_APPTRACE_MAX_VPRINTF_ARGS 256
#define ESP_APPTRACE_HOST_BUF_SIZE 256
#define ESP_APPTRACE_PRINT_LOCK 0
#define LOG_LOCAL_LEVEL ESP_LOG_ERROR
#include "esp_log.h"
const static char *TAG = "esp_apptrace";
#if ESP_APPTRACE_PRINT_LOCK
#define ESP_APPTRACE_LOG( format, ... ) \
do { \
esp_apptrace_log_lock(); \
ets_printf(format, ##__VA_ARGS__); \
esp_apptrace_log_unlock(); \
} while(0)
#else
#define ESP_APPTRACE_LOG( format, ... ) \
do { \
ets_printf(format, ##__VA_ARGS__); \
} while(0)
#endif
#define ESP_APPTRACE_LOG_LEV( _L_, level, format, ... ) \
do { \
if (LOG_LOCAL_LEVEL >= level) { \
ESP_APPTRACE_LOG(LOG_FORMAT(_L_, format), esp_log_early_timestamp(), TAG, ##__VA_ARGS__); \
} \
} while(0)
#define ESP_APPTRACE_LOGE( format, ... ) ESP_APPTRACE_LOG_LEV(E, ESP_LOG_ERROR, format, ##__VA_ARGS__)
#define ESP_APPTRACE_LOGW( format, ... ) ESP_APPTRACE_LOG_LEV(W, ESP_LOG_WARN, format, ##__VA_ARGS__)
#define ESP_APPTRACE_LOGI( format, ... ) ESP_APPTRACE_LOG_LEV(I, ESP_LOG_INFO, format, ##__VA_ARGS__)
#define ESP_APPTRACE_LOGD( format, ... ) ESP_APPTRACE_LOG_LEV(D, ESP_LOG_DEBUG, format, ##__VA_ARGS__)
#define ESP_APPTRACE_LOGV( format, ... ) ESP_APPTRACE_LOG_LEV(V, ESP_LOG_VERBOSE, format, ##__VA_ARGS__)
#define ESP_APPTRACE_LOGO( format, ... ) ESP_APPTRACE_LOG_LEV(E, ESP_LOG_NONE, format, ##__VA_ARGS__)
#define ESP_APPTRACE_CPUTICKS2US(_t_) ((_t_)/(XT_CLOCK_FREQ/1000000))
// TODO: move these (and same definitions in trax.c to dport_reg.h)
#define TRACEMEM_MUX_PROBLK0_APPBLK1 0
#define TRACEMEM_MUX_BLK0_ONLY 1
#define TRACEMEM_MUX_BLK1_ONLY 2
#define TRACEMEM_MUX_PROBLK1_APPBLK0 3
// TRAX is disabled, so we use its registers for our own purposes
// | 31..XXXXXX..24 | 23 .(host_connect). 23 | 22 .(host_data). 22| 21..(block_id)..15 | 14..(block_len)..0 |
#define ESP_APPTRACE_TRAX_CTRL_REG ERI_TRAX_DELAYCNT
#define ESP_APPTRACE_TRAX_STAT_REG ERI_TRAX_TRIGGERPC
#define ESP_APPTRACE_TRAX_BLOCK_LEN_MSK 0x7FFFUL
#define ESP_APPTRACE_TRAX_BLOCK_LEN(_l_) ((_l_) & ESP_APPTRACE_TRAX_BLOCK_LEN_MSK)
#define ESP_APPTRACE_TRAX_BLOCK_LEN_GET(_v_) ((_v_) & ESP_APPTRACE_TRAX_BLOCK_LEN_MSK)
#define ESP_APPTRACE_TRAX_BLOCK_ID_MSK 0x7FUL
#define ESP_APPTRACE_TRAX_BLOCK_ID(_id_) (((_id_) & ESP_APPTRACE_TRAX_BLOCK_ID_MSK) << 15)
#define ESP_APPTRACE_TRAX_BLOCK_ID_GET(_v_) (((_v_) >> 15) & ESP_APPTRACE_TRAX_BLOCK_ID_MSK)
#define ESP_APPTRACE_TRAX_HOST_DATA (1 << 22)
#define ESP_APPTRACE_TRAX_HOST_CONNECT (1 << 23)
#if CONFIG_SYSVIEW_ENABLE
#define ESP_APPTRACE_USR_BLOCK_CORE(_cid_) (0)
#define ESP_APPTRACE_USR_BLOCK_LEN(_v_) (_v_)
#else
#define ESP_APPTRACE_USR_BLOCK_CORE(_cid_) ((_cid_) << 15)
#define ESP_APPTRACE_USR_BLOCK_LEN(_v_) (~(1 << 15) & (_v_))
#endif
#define ESP_APPTRACE_USR_BLOCK_RAW_SZ(_s_) ((_s_) + sizeof(esp_tracedata_hdr_t))
static volatile uint8_t *s_trax_blocks[] = {
(volatile uint8_t *) 0x3FFFC000,
(volatile uint8_t *) 0x3FFF8000
};
#define ESP_APPTRACE_TRAX_BLOCKS_NUM (sizeof(s_trax_blocks)/sizeof(s_trax_blocks[0]))
#define ESP_APPTRACE_TRAX_BLOCK_SIZE 0x4000UL
#define ESP_APPTRACE_TRAX_INBLOCK_START 0
#define ESP_APPTRACE_TRAX_INBLOCK_MARKER() (s_trace_buf.trax.state.markers[s_trace_buf.trax.state.in_block % 2])
#define ESP_APPTRACE_TRAX_INBLOCK_MARKER_UPD(_v_) do {s_trace_buf.trax.state.markers[s_trace_buf.trax.state.in_block % 2] += (_v_);}while(0)
#define ESP_APPTRACE_TRAX_INBLOCK_GET() (&s_trace_buf.trax.blocks[s_trace_buf.trax.state.in_block % 2])
//TODO: menuconfig
#define ESP_APPTRACE_DOWN_BUF_SIZE 32UL
#if CONFIG_SYSVIEW_ENABLE
#define ESP_APPTRACE_USR_DATA_LEN_MAX 255UL
#else
#define ESP_APPTRACE_USR_DATA_LEN_MAX (ESP_APPTRACE_TRAX_BLOCK_SIZE - sizeof(esp_tracedata_hdr_t))
#endif
/** Trace data header. Every user data chunk is prepended with this header.
* User allocates block with esp_apptrace_buffer_get and then fills it with data,
* in multithreading environment it can happen that tasks gets buffer and then gets interrupted,
* so it is possible that user data are incomplete when TRAX memory block is exposed to the host.
* In this case host SW will see that wr_sz < block_sz and will report error.
*/
typedef struct {
#if CONFIG_SYSVIEW_ENABLE
uint8_t block_sz; // size of allocated block for user data
uint8_t wr_sz; // size of actually written data
#else
uint16_t block_sz; // size of allocated block for user data
uint16_t wr_sz; // size of actually written data
#endif
} esp_tracedata_hdr_t;
/** TODO: docs
*/
typedef struct {
uint16_t block_sz; // size of allocated block for user data
} esp_hostdata_hdr_t;
/** TRAX HW transport state */
typedef struct {
uint32_t in_block; // input block ID
// TODO: change to uint16_t
uint32_t markers[ESP_APPTRACE_TRAX_BLOCKS_NUM]; // block filling level markers
} esp_apptrace_trax_state_t;
/** memory block parameters */
typedef struct {
uint8_t *start; // start address
uint16_t sz; // size
} esp_apptrace_mem_block_t;
/** TRAX HW transport data */
typedef struct {
volatile esp_apptrace_trax_state_t state; // state
esp_apptrace_mem_block_t blocks[ESP_APPTRACE_TRAX_BLOCKS_NUM]; // memory blocks
#if CONFIG_ESP32_APPTRACE_PENDING_DATA_SIZE_MAX > 0
// ring buffer control struct for pending user blocks
esp_apptrace_rb_t rb_pend;
// storage for pending user blocks
uint8_t pending_data[CONFIG_ESP32_APPTRACE_PENDING_DATA_SIZE_MAX + 1];
#if CONFIG_ESP32_APPTRACE_PENDING_DATA_SIZE_MAX > ESP_APPTRACE_TRAX_BLOCK_SIZE
// ring buffer control struct for pending user data chunks sizes,
// every chunk contains whole number of user blocks and fit into TRAX memory block
esp_apptrace_rb_t rb_pend_chunk_sz;
// storage for above ring buffer data
uint16_t pending_chunk_sz[CONFIG_ESP32_APPTRACE_PENDING_DATA_SIZE_MAX/ESP_APPTRACE_TRAX_BLOCK_SIZE + 2];
// current (accumulated) pending user data chunk size
uint16_t cur_pending_chunk_sz;
#endif
#endif
} esp_apptrace_trax_data_t;
/** tracing module internal data */
typedef struct {
esp_apptrace_lock_t lock; // sync lock
uint8_t inited; // module initialization state flag
// ring buffer control struct for data from host (down buffer)
esp_apptrace_rb_t rb_down;
// storage for above ring buffer data
uint8_t down_buf[ESP_APPTRACE_DOWN_BUF_SIZE + 1];
esp_apptrace_trax_data_t trax; // TRAX HW transport data
} esp_apptrace_buffer_t;
static esp_apptrace_buffer_t s_trace_buf;
#if ESP_APPTRACE_PRINT_LOCK
static esp_apptrace_lock_t s_log_lock = {.irq_stat = 0, .portmux = portMUX_INITIALIZER_UNLOCKED};
#endif
static uint16_t esp_apptrace_trax_write_down_buffer_nolock(uint8_t *data, uint16_t size);
static esp_err_t esp_apptrace_trax_flush(uint32_t min_sz, uint32_t tmo);
static inline int esp_apptrace_log_lock()
{
#if ESP_APPTRACE_PRINT_LOCK
int ret = esp_apptrace_lock_take(&s_log_lock, ESP_APPTRACE_TMO_INFINITE);
return ret;
#else
return 0;
#endif
}
static inline void esp_apptrace_log_unlock()
{
#if ESP_APPTRACE_PRINT_LOCK
esp_apptrace_lock_give(&s_log_lock);
#endif
}
esp_err_t esp_apptrace_lock_initialize()
{
#if CONFIG_SYSVIEW_ENABLE == 0
esp_apptrace_lock_init(&s_trace_buf.lock);
#endif
return ESP_OK;
}
esp_err_t inline esp_apptrace_lock_cleanup()
{
return ESP_OK;
}
esp_err_t esp_apptrace_lock(uint32_t *tmo)
{
#if CONFIG_SYSVIEW_ENABLE == 0
unsigned cur, elapsed, start = xthal_get_ccount();
esp_err_t ret = esp_apptrace_lock_take(&s_trace_buf.lock, *tmo);
if (ret != ESP_OK) {
return ESP_FAIL;
}
// decrease tmo by actual waiting time
cur = xthal_get_ccount();
if (start <= cur) {
elapsed = cur - start;
} else {
elapsed = ULONG_MAX - start + cur;
}
if (ESP_APPTRACE_CPUTICKS2US(elapsed) > *tmo) {
*tmo = 0;
} else {
*tmo -= ESP_APPTRACE_CPUTICKS2US(elapsed);
}
#endif
return ESP_OK;
}
esp_err_t esp_apptrace_unlock()
{
esp_err_t ret = ESP_OK;
#if CONFIG_SYSVIEW_ENABLE == 0
ret = esp_apptrace_lock_give(&s_trace_buf.lock);
#endif
return ret;
}
#if CONFIG_ESP32_APPTRACE_DEST_TRAX
static void esp_apptrace_trax_init()
{
// Stop trace, if any (on the current CPU)
eri_write(ERI_TRAX_TRAXCTRL, TRAXCTRL_TRSTP);
eri_write(ERI_TRAX_TRAXCTRL, TRAXCTRL_TMEN);
eri_write(ESP_APPTRACE_TRAX_CTRL_REG, ESP_APPTRACE_TRAX_BLOCK_ID(ESP_APPTRACE_TRAX_INBLOCK_START));
eri_write(ESP_APPTRACE_TRAX_STAT_REG, 0);
ESP_APPTRACE_LOGI("Initialized TRAX on CPU%d", xPortGetCoreID());
}
#if CONFIG_ESP32_APPTRACE_PENDING_DATA_SIZE_MAX > ESP_APPTRACE_TRAX_BLOCK_SIZE
// keep the size of buffered data for copying to TRAX mem block.
// Only whole user blocks should be copied from buffer to TRAX block upon the switch
static void esp_apptrace_trax_pend_chunk_sz_update(uint16_t size)
{
ESP_APPTRACE_LOGD("Update chunk enter %d/%d w-r-s %d-%d-%d", s_trace_buf.trax.cur_pending_chunk_sz, size,
s_trace_buf.trax.rb_pend_chunk_sz.wr, s_trace_buf.trax.rb_pend_chunk_sz.rd, s_trace_buf.trax.rb_pend_chunk_sz.cur_size);
if ((uint32_t)s_trace_buf.trax.cur_pending_chunk_sz + (uint32_t)size <= ESP_APPTRACE_TRAX_BLOCK_SIZE) {
ESP_APPTRACE_LOGD("Update chunk %d/%d", s_trace_buf.trax.cur_pending_chunk_sz, size);
s_trace_buf.trax.cur_pending_chunk_sz += size;
} else {
uint16_t *chunk_sz = (uint16_t *)esp_apptrace_rb_produce(&s_trace_buf.trax.rb_pend_chunk_sz, sizeof(uint16_t));
if (!chunk_sz) {
assert(false && "Failed to alloc pended chunk sz slot!");
} else {
ESP_APPTRACE_LOGD("Update new chunk %d/%d", s_trace_buf.trax.cur_pending_chunk_sz, size);
*chunk_sz = s_trace_buf.trax.cur_pending_chunk_sz;
s_trace_buf.trax.cur_pending_chunk_sz = size;
}
}
}
static uint16_t esp_apptrace_trax_pend_chunk_sz_get()
{
uint16_t ch_sz;
ESP_APPTRACE_LOGD("Get chunk enter %d w-r-s %d-%d-%d", s_trace_buf.trax.cur_pending_chunk_sz,
s_trace_buf.trax.rb_pend_chunk_sz.wr, s_trace_buf.trax.rb_pend_chunk_sz.rd, s_trace_buf.trax.rb_pend_chunk_sz.cur_size);
uint16_t *chunk_sz = (uint16_t *)esp_apptrace_rb_consume(&s_trace_buf.trax.rb_pend_chunk_sz, sizeof(uint16_t));
if (!chunk_sz) {
ch_sz = s_trace_buf.trax.cur_pending_chunk_sz;
s_trace_buf.trax.cur_pending_chunk_sz = 0;
} else {
ch_sz = *chunk_sz;
}
return ch_sz;
}
#endif
// assumed to be protected by caller from multi-core/thread access
static esp_err_t esp_apptrace_trax_block_switch()
{
int prev_block_num = s_trace_buf.trax.state.in_block % 2;
int new_block_num = prev_block_num ? (0) : (1);
int res = ESP_OK;
extern uint32_t __esp_apptrace_trax_eri_updated;
// indicate to host that we are about to update.
// this is used only to place CPU into streaming mode at tracing startup
// before starting streaming host can halt us after we read ESP_APPTRACE_TRAX_CTRL_REG and before we updated it
// HACK: in this case host will set breakpoint just after ESP_APPTRACE_TRAX_CTRL_REG update,
// here we set address to set bp at
// enter ERI update critical section
eri_write(ESP_APPTRACE_TRAX_STAT_REG, (uint32_t)&__esp_apptrace_trax_eri_updated);
uint32_t ctrl_reg = eri_read(ESP_APPTRACE_TRAX_CTRL_REG);
uint32_t host_connected = ESP_APPTRACE_TRAX_HOST_CONNECT & ctrl_reg;
if (host_connected) {
uint32_t acked_block = ESP_APPTRACE_TRAX_BLOCK_ID_GET(ctrl_reg);
uint32_t host_to_read = ESP_APPTRACE_TRAX_BLOCK_LEN_GET(ctrl_reg);
if (host_to_read != 0 || acked_block != (s_trace_buf.trax.state.in_block & ESP_APPTRACE_TRAX_BLOCK_ID_MSK)) {
ESP_APPTRACE_LOGD("HC[%d]: Can not switch %x %d %x %x/%lx, m %d", xPortGetCoreID(), ctrl_reg, host_to_read, acked_block,
s_trace_buf.trax.state.in_block & ESP_APPTRACE_TRAX_BLOCK_ID_MSK, s_trace_buf.trax.state.in_block, s_trace_buf.trax.state.markers[prev_block_num]);
res = ESP_ERR_NO_MEM;
goto _on_func_exit;
}
}
s_trace_buf.trax.state.markers[new_block_num] = 0;
// switch to new block
s_trace_buf.trax.state.in_block++;
DPORT_WRITE_PERI_REG(DPORT_TRACEMEM_MUX_MODE_REG, new_block_num ? TRACEMEM_MUX_BLK0_ONLY : TRACEMEM_MUX_BLK1_ONLY);
// handle data from host
esp_hostdata_hdr_t *hdr = (esp_hostdata_hdr_t *)s_trace_buf.trax.blocks[new_block_num].start;
if (ctrl_reg & ESP_APPTRACE_TRAX_HOST_DATA && hdr->block_sz > 0) {
// TODO: add support for multiple blocks from host, currently there is no need for that
uint8_t *p = s_trace_buf.trax.blocks[new_block_num].start + s_trace_buf.trax.blocks[new_block_num].sz;
ESP_APPTRACE_LOGD("Recvd %d bytes from host [%x %x %x .. %x %x]", hdr->block_sz,
*(s_trace_buf.trax.blocks[new_block_num].start+0), *(s_trace_buf.trax.blocks[new_block_num].start+1),
*(s_trace_buf.trax.blocks[new_block_num].start+2), *(p-2), *(p-1));
uint32_t sz = esp_apptrace_trax_write_down_buffer_nolock((uint8_t *)(hdr+1), hdr->block_sz);
if (sz != hdr->block_sz) {
ESP_APPTRACE_LOGE("Failed to write %d bytes to down buffer!", hdr->block_sz - sz);
}
hdr->block_sz = 0;
}
#if CONFIG_ESP32_APPTRACE_PENDING_DATA_SIZE_MAX > 0
// copy pending data to TRAX block if any
#if CONFIG_ESP32_APPTRACE_PENDING_DATA_SIZE_MAX > ESP_APPTRACE_TRAX_BLOCK_SIZE
uint16_t max_chunk_sz = esp_apptrace_trax_pend_chunk_sz_get();
#else
uint16_t max_chunk_sz = s_trace_buf.trax.blocks[new_block_num].sz;
#endif
while (s_trace_buf.trax.state.markers[new_block_num] < max_chunk_sz) {
uint32_t read_sz = esp_apptrace_rb_read_size_get(&s_trace_buf.trax.rb_pend);
if (read_sz == 0) {
#if CONFIG_ESP32_APPTRACE_PENDING_DATA_SIZE_MAX > ESP_APPTRACE_TRAX_BLOCK_SIZE
/* theres is a bug: esp_apptrace_trax_pend_chunk_sz_get returned wrong value,
it must be greater or equal to one returned by esp_apptrace_rb_read_size_get */
ESP_APPTRACE_LOGE("No pended bytes, must be > 0 and <= %d!", max_chunk_sz);
#endif
break;
}
if (read_sz > max_chunk_sz - s_trace_buf.trax.state.markers[new_block_num]) {
read_sz = max_chunk_sz - s_trace_buf.trax.state.markers[new_block_num];
}
uint8_t *ptr = esp_apptrace_rb_consume(&s_trace_buf.trax.rb_pend, read_sz);
if (!ptr) {
assert(false && "Failed to consume pended bytes!!");
break;
}
if (host_connected) {
ESP_APPTRACE_LOGD("Pump %d pend bytes [%x %x %x %x : %x %x %x %x : %x %x %x %x : %x %x...%x %x]",
read_sz, *(ptr+0), *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4),
*(ptr+5), *(ptr+6), *(ptr+7), *(ptr+8), *(ptr+9), *(ptr+10), *(ptr+11), *(ptr+12), *(ptr+13), *(ptr+read_sz-2), *(ptr+read_sz-1));
}
memcpy(s_trace_buf.trax.blocks[new_block_num].start + s_trace_buf.trax.state.markers[new_block_num], ptr, read_sz);
s_trace_buf.trax.state.markers[new_block_num] += read_sz;
}
#endif
eri_write(ESP_APPTRACE_TRAX_CTRL_REG, ESP_APPTRACE_TRAX_BLOCK_ID(s_trace_buf.trax.state.in_block) |
host_connected | ESP_APPTRACE_TRAX_BLOCK_LEN(s_trace_buf.trax.state.markers[prev_block_num]));
_on_func_exit:
// exit ERI update critical section
eri_write(ESP_APPTRACE_TRAX_STAT_REG, 0x0);
// TODO: currently host sets breakpoint, use break instruction to stop;
// it will allow to use ESP_APPTRACE_TRAX_STAT_REG for other purposes
asm volatile (
" .global __esp_apptrace_trax_eri_updated\n"
"__esp_apptrace_trax_eri_updated:\n"); // host will set bp here to resolve collision at streaming start
return res;
}
static esp_err_t esp_apptrace_trax_block_switch_waitus(uint32_t tmo)
{
int res;
esp_apptrace_tmo_t sleeping_tmo;
esp_apptrace_tmo_init(&sleeping_tmo, tmo);
while ((res = esp_apptrace_trax_block_switch()) != ESP_OK) {
res = esp_apptrace_tmo_check(&sleeping_tmo);
if (res != ESP_OK) {
break;
}
}
return res;
}
static inline void esp_apptrace_trax_down_buf_init()
{
esp_apptrace_rb_init(&s_trace_buf.rb_down, s_trace_buf.down_buf, sizeof(s_trace_buf.down_buf));
}
static inline uint8_t *esp_apptrace_trax_get_down_rdptr(uint32_t *size, uint32_t *tmo)
{
int res = esp_apptrace_lock(tmo);
if (res != ESP_OK) {
return NULL;
}
// may need to flush
uint32_t ctrl_reg = eri_read(ESP_APPTRACE_TRAX_CTRL_REG);
if (ctrl_reg & ESP_APPTRACE_TRAX_HOST_DATA) {
ESP_APPTRACE_LOGD("force flush");
res = esp_apptrace_trax_block_switch_waitus(*tmo);
if (res != ESP_OK) {
ESP_APPTRACE_LOGE("Failed to switch to another block to recv data from host!");
}
}
uint8_t *ptr = NULL;
uint32_t sz = esp_apptrace_rb_read_size_get(&s_trace_buf.rb_down);
if (sz > 0) {
ptr = esp_apptrace_rb_consume(&s_trace_buf.rb_down, sz > *size ? *size : sz);
if (!ptr) {
assert(false && "Failed to consume bytes from down buffer!");
}
}
*size = sz;
if (esp_apptrace_unlock() != ESP_OK) {
assert(false && "Failed to unlock apptrace data!");
}
return ptr;
}
static inline esp_err_t esp_apptrace_trax_put_down_rdptr(uint8_t *ptr, uint32_t size, uint32_t *tmo)
{
/* nothing todo */
return ESP_OK;
}
static uint16_t esp_apptrace_trax_write_down_buffer_nolock(uint8_t *data, uint16_t size)
{
uint8_t *ptr = esp_apptrace_rb_produce(&s_trace_buf.rb_down, size);
if (ptr) {
memcpy(ptr, data, size);
} else {
return 0;
}
return size;
}
static inline uint8_t *esp_apptrace_data_header_init(uint8_t *ptr, uint16_t usr_size)
{
// it is safe to use xPortGetCoreID() in macro call because arg is used only once inside it
((esp_tracedata_hdr_t *)ptr)->block_sz = ESP_APPTRACE_USR_BLOCK_CORE(xPortGetCoreID()) | usr_size;
((esp_tracedata_hdr_t *)ptr)->wr_sz = 0;
return ptr + sizeof(esp_tracedata_hdr_t);
}
static inline uint8_t *esp_apptrace_trax_wait4buf(uint16_t size, uint32_t tmo, int *pended)
{
uint8_t *ptr = NULL;
int res = esp_apptrace_trax_block_switch_waitus(tmo);
if (res != ESP_OK) {
return NULL;
}
// check if we still have pending data
#if CONFIG_ESP32_APPTRACE_PENDING_DATA_SIZE_MAX > 0
if (esp_apptrace_rb_read_size_get(&s_trace_buf.trax.rb_pend) > 0) {
// if after TRAX block switch still have pending data (not all pending data have been pumped to TRAX block)
// alloc new pending buffer
*pended = 1;
ptr = esp_apptrace_rb_produce(&s_trace_buf.trax.rb_pend, size);
if (!ptr) {
ESP_APPTRACE_LOGE("Failed to alloc pend buf 1: w-r-s %d-%d-%d!", s_trace_buf.trax.rb_pend.wr, s_trace_buf.trax.rb_pend.rd, s_trace_buf.trax.rb_pend.cur_size);
}
} else
#endif
{
// update block pointers
if (ESP_APPTRACE_TRAX_INBLOCK_MARKER() + size > ESP_APPTRACE_TRAX_INBLOCK_GET()->sz) {
#if CONFIG_ESP32_APPTRACE_PENDING_DATA_SIZE_MAX > 0
*pended = 1;
ptr = esp_apptrace_rb_produce(&s_trace_buf.trax.rb_pend, size);
if (ptr == NULL) {
ESP_APPTRACE_LOGE("Failed to alloc pend buf 2: w-r-s %d-%d-%d!", s_trace_buf.trax.rb_pend.wr, s_trace_buf.trax.rb_pend.rd, s_trace_buf.trax.rb_pend.cur_size);
}
#endif
} else {
*pended = 0;
ptr = ESP_APPTRACE_TRAX_INBLOCK_GET()->start + ESP_APPTRACE_TRAX_INBLOCK_MARKER();
}
}
return ptr;
}
static uint8_t *esp_apptrace_trax_get_buffer(size_t size, uint32_t *tmo)
{
uint8_t *buf_ptr = NULL;
if (size > ESP_APPTRACE_USR_DATA_LEN_MAX) {
ESP_APPTRACE_LOGE("Too large user data size %d!", size);
return NULL;
}
int res = esp_apptrace_lock(tmo);
if (res != ESP_OK) {
return NULL;
}
// check for data in the pending buffer
#if CONFIG_ESP32_APPTRACE_PENDING_DATA_SIZE_MAX > 0
if (esp_apptrace_rb_read_size_get(&s_trace_buf.trax.rb_pend) > 0) {
// if we have buffered data try to switch TRAX block
esp_apptrace_trax_block_switch();
// if switch was successful, part or all pended data have been copied to TRAX block
}
if (esp_apptrace_rb_read_size_get(&s_trace_buf.trax.rb_pend) > 0) {
// if we have buffered data alloc new pending buffer
ESP_APPTRACE_LOGD("Get %d bytes from PEND buffer", size);
buf_ptr = esp_apptrace_rb_produce(&s_trace_buf.trax.rb_pend, ESP_APPTRACE_USR_BLOCK_RAW_SZ(size));
if (buf_ptr == NULL) {
int pended_buf;
buf_ptr = esp_apptrace_trax_wait4buf(ESP_APPTRACE_USR_BLOCK_RAW_SZ(size), *tmo, &pended_buf);
if (buf_ptr) {
if (pended_buf) {
#if CONFIG_ESP32_APPTRACE_PENDING_DATA_SIZE_MAX > ESP_APPTRACE_TRAX_BLOCK_SIZE
esp_apptrace_trax_pend_chunk_sz_update(ESP_APPTRACE_USR_BLOCK_RAW_SZ(size));
#endif
} else {
ESP_APPTRACE_LOGD("Got %d bytes from TRAX buffer", size);
// update cur block marker
ESP_APPTRACE_TRAX_INBLOCK_MARKER_UPD(ESP_APPTRACE_USR_BLOCK_RAW_SZ(size));
}
}
} else {
#if CONFIG_ESP32_APPTRACE_PENDING_DATA_SIZE_MAX > ESP_APPTRACE_TRAX_BLOCK_SIZE
esp_apptrace_trax_pend_chunk_sz_update(ESP_APPTRACE_USR_BLOCK_RAW_SZ(size));
#endif
}
} else
#endif
if (ESP_APPTRACE_TRAX_INBLOCK_MARKER() + ESP_APPTRACE_USR_BLOCK_RAW_SZ(size) > ESP_APPTRACE_TRAX_INBLOCK_GET()->sz) {
#if CONFIG_ESP32_APPTRACE_PENDING_DATA_SIZE_MAX > 0
ESP_APPTRACE_LOGD("TRAX full. Get %d bytes from PEND buffer", size);
buf_ptr = esp_apptrace_rb_produce(&s_trace_buf.trax.rb_pend, ESP_APPTRACE_USR_BLOCK_RAW_SZ(size));
if (buf_ptr) {
#if CONFIG_ESP32_APPTRACE_PENDING_DATA_SIZE_MAX > ESP_APPTRACE_TRAX_BLOCK_SIZE
esp_apptrace_trax_pend_chunk_sz_update(ESP_APPTRACE_USR_BLOCK_RAW_SZ(size));
#endif
}
#endif
if (buf_ptr == NULL) {
int pended_buf;
ESP_APPTRACE_LOGD("TRAX full. Get %d bytes from pend buffer", size);
buf_ptr = esp_apptrace_trax_wait4buf(ESP_APPTRACE_USR_BLOCK_RAW_SZ(size), *tmo, &pended_buf);
if (buf_ptr) {
if (pended_buf) {
#if CONFIG_ESP32_APPTRACE_PENDING_DATA_SIZE_MAX > ESP_APPTRACE_TRAX_BLOCK_SIZE
esp_apptrace_trax_pend_chunk_sz_update(ESP_APPTRACE_USR_BLOCK_RAW_SZ(size));
#endif
} else {
ESP_APPTRACE_LOGD("Got %d bytes from TRAX buffer", size);
// update cur block marker
ESP_APPTRACE_TRAX_INBLOCK_MARKER_UPD(ESP_APPTRACE_USR_BLOCK_RAW_SZ(size));
}
}
}
} else {
ESP_APPTRACE_LOGD("Get %d bytes from TRAX buffer!", size);
// fit to curr TRAX nlock
buf_ptr = ESP_APPTRACE_TRAX_INBLOCK_GET()->start + ESP_APPTRACE_TRAX_INBLOCK_MARKER();
// update cur block marker
ESP_APPTRACE_TRAX_INBLOCK_MARKER_UPD(ESP_APPTRACE_USR_BLOCK_RAW_SZ(size));
}
if (buf_ptr) {
buf_ptr = esp_apptrace_data_header_init(buf_ptr, size);
}
// now we can safely unlock apptrace to allow other tasks/ISRs to get other buffers and write their data
if (esp_apptrace_unlock() != ESP_OK) {
assert(false && "Failed to unlock apptrace data!");
}
return buf_ptr;
}
static esp_err_t esp_apptrace_trax_put_buffer(uint8_t *ptr, uint32_t *tmo)
{
int res = ESP_OK;
esp_tracedata_hdr_t *hdr = (esp_tracedata_hdr_t *)(ptr - sizeof(esp_tracedata_hdr_t));
// update written size
hdr->wr_sz = hdr->block_sz;
// TODO: mark block as busy in order not to re-use it for other tracing calls until it is completely written
// TODO: avoid potential situation when all memory is consumed by low prio tasks which can not complete writing due to
// higher prio tasks and the latter can not allocate buffers at all
// this is abnormal situation can be detected on host which will receive only uncompleted buffers
// workaround: use own memcpy which will kick-off dead tracing calls
return res;
}
static esp_err_t esp_apptrace_trax_flush(uint32_t min_sz, uint32_t tmo)
{
int res = ESP_OK;
if (ESP_APPTRACE_TRAX_INBLOCK_MARKER() < min_sz) {
ESP_APPTRACE_LOGI("Ignore flush request for min %d bytes. Bytes in TRAX block: %d.", min_sz, ESP_APPTRACE_TRAX_INBLOCK_MARKER());
return ESP_OK;
}
// switch TRAX block while size of data is more than min size
while (ESP_APPTRACE_TRAX_INBLOCK_MARKER() > 0) {
ESP_APPTRACE_LOGD("Try to flush %d bytes. Wait until block switch for %u us", ESP_APPTRACE_TRAX_INBLOCK_MARKER(), tmo);
res = esp_apptrace_trax_block_switch_waitus(tmo);
if (res != ESP_OK) {
ESP_APPTRACE_LOGE("Failed to switch to another block!");
return res;
}
}
return res;
}
static esp_err_t esp_apptrace_trax_dest_init()
{
for (int i = 0; i < ESP_APPTRACE_TRAX_BLOCKS_NUM; i++) {
s_trace_buf.trax.blocks[i].start = (uint8_t *)s_trax_blocks[i];
s_trace_buf.trax.blocks[i].sz = ESP_APPTRACE_TRAX_BLOCK_SIZE;
s_trace_buf.trax.state.markers[i] = 0;
}
s_trace_buf.trax.state.in_block = ESP_APPTRACE_TRAX_INBLOCK_START;
#if CONFIG_ESP32_APPTRACE_PENDING_DATA_SIZE_MAX > 0
esp_apptrace_rb_init(&s_trace_buf.trax.rb_pend, s_trace_buf.trax.pending_data,
sizeof(s_trace_buf.trax.pending_data));
#if CONFIG_ESP32_APPTRACE_PENDING_DATA_SIZE_MAX > ESP_APPTRACE_TRAX_BLOCK_SIZE
s_trace_buf.trax.cur_pending_chunk_sz = 0;
esp_apptrace_rb_init(&s_trace_buf.trax.rb_pend_chunk_sz, (uint8_t *)s_trace_buf.trax.pending_chunk_sz,
sizeof(s_trace_buf.trax.pending_chunk_sz));
#endif
#endif
esp_apptrace_trax_down_buf_init();
DPORT_WRITE_PERI_REG(DPORT_PRO_TRACEMEM_ENA_REG, DPORT_PRO_TRACEMEM_ENA_M);
#if CONFIG_FREERTOS_UNICORE == 0
DPORT_WRITE_PERI_REG(DPORT_APP_TRACEMEM_ENA_REG, DPORT_APP_TRACEMEM_ENA_M);
#endif
// Expose block 1 to host, block 0 is current trace input buffer
DPORT_WRITE_PERI_REG(DPORT_TRACEMEM_MUX_MODE_REG, TRACEMEM_MUX_BLK1_ONLY);
return ESP_OK;
}
#endif
esp_err_t esp_apptrace_init()
{
int res;
if (!s_trace_buf.inited) {
memset(&s_trace_buf, 0, sizeof(s_trace_buf));
res = esp_apptrace_lock_initialize(&s_trace_buf.lock);
if (res != ESP_OK) {
ESP_APPTRACE_LOGE("Failed to init log lock (%d)!", res);
return res;
}
#if CONFIG_ESP32_APPTRACE_DEST_TRAX
res = esp_apptrace_trax_dest_init();
if (res != ESP_OK) {
ESP_APPTRACE_LOGE("Failed to init TRAX dest data (%d)!", res);
esp_apptrace_lock_cleanup();
return res;
}
#endif
}
#if CONFIG_ESP32_APPTRACE_DEST_TRAX
// init TRAX on this CPU
esp_apptrace_trax_init();
#endif
s_trace_buf.inited |= 1 << xPortGetCoreID(); // global and this CPU-specific data are inited
return ESP_OK;
}
esp_err_t esp_apptrace_read(esp_apptrace_dest_t dest, void *buf, size_t *size, uint32_t user_tmo)
{
uint8_t *ptr = NULL;
uint32_t tmo = user_tmo;
int res = ESP_OK;
esp_apptrace_tmo_t sleeping_tmo;
//TODO: use ptr to HW transport iface struct
uint8_t *(*apptrace_get_down_buffer)(uint32_t *, uint32_t *);
esp_err_t (*apptrace_put_down_buffer)(uint8_t *, uint32_t , uint32_t *);
if (dest == ESP_APPTRACE_DEST_TRAX) {
#if CONFIG_ESP32_APPTRACE_DEST_TRAX
apptrace_get_down_buffer = esp_apptrace_trax_get_down_rdptr;
apptrace_put_down_buffer = esp_apptrace_trax_put_down_rdptr;
#else
ESP_APPTRACE_LOGE("Application tracing via TRAX is disabled in menuconfig!");
return ESP_ERR_NOT_SUPPORTED;
#endif
} else {
ESP_APPTRACE_LOGE("Trace destinations other then TRAX are not supported yet!");
return ESP_ERR_NOT_SUPPORTED;
}
//TODO: callback system
esp_apptrace_tmo_init(&sleeping_tmo, tmo);
uint32_t act_sz = *size;
while ((ptr = apptrace_get_down_buffer(&act_sz, &tmo)) == NULL ) {
res = esp_apptrace_tmo_check(&sleeping_tmo);
if (res != ESP_OK) {
break;
}
}
if (ptr && act_sz > 0) {
ESP_APPTRACE_LOGD("Read %d bytes from host", act_sz);
memcpy(buf, ptr, act_sz);
res = apptrace_put_down_buffer(ptr, act_sz, &tmo);
*size = act_sz;
}
return res;
}
esp_err_t esp_apptrace_write(esp_apptrace_dest_t dest, const void *data, size_t size, uint32_t user_tmo)
{
uint8_t *ptr = NULL;
uint32_t tmo = user_tmo;
//TODO: use ptr to HW transport iface struct
uint8_t *(*apptrace_get_buffer)(size_t, uint32_t *);
esp_err_t (*apptrace_put_buffer)(uint8_t *, uint32_t *);
if (dest == ESP_APPTRACE_DEST_TRAX) {
#if CONFIG_ESP32_APPTRACE_DEST_TRAX
apptrace_get_buffer = esp_apptrace_trax_get_buffer;
apptrace_put_buffer = esp_apptrace_trax_put_buffer;
#else
ESP_APPTRACE_LOGE("Application tracing via TRAX is disabled in menuconfig!");
return ESP_ERR_NOT_SUPPORTED;
#endif
} else {
ESP_APPTRACE_LOGE("Trace destinations other then TRAX are not supported yet!");
return ESP_ERR_NOT_SUPPORTED;
}
ptr = apptrace_get_buffer(size, &tmo);
if (ptr == NULL) {
return ESP_ERR_NO_MEM;
}
// actually can be suspended here by higher prio tasks/ISRs
//TODO: use own memcpy with dead trace calls kick-off algo and tmo expiration check
memcpy(ptr, data, size);
// now indicate that this buffer is ready to be sent off to host
return apptrace_put_buffer(ptr, &tmo);
}
int esp_apptrace_vprintf_to(esp_apptrace_dest_t dest, uint32_t user_tmo, const char *fmt, va_list ap)
{
uint16_t nargs = 0;
uint8_t *pout, *p = (uint8_t *)fmt;
uint32_t tmo = user_tmo;
//TODO: use ptr to HW transport iface struct
uint8_t *(*apptrace_get_buffer)(size_t, uint32_t *);
esp_err_t (*apptrace_put_buffer)(uint8_t *, uint32_t *);
if (dest == ESP_APPTRACE_DEST_TRAX) {
#if CONFIG_ESP32_APPTRACE_DEST_TRAX
apptrace_get_buffer = esp_apptrace_trax_get_buffer;
apptrace_put_buffer = esp_apptrace_trax_put_buffer;
#else
ESP_APPTRACE_LOGE("Application tracing via TRAX is disabled in menuconfig!");
return ESP_ERR_NOT_SUPPORTED;
#endif
} else {
ESP_APPTRACE_LOGE("Trace destinations other then TRAX are not supported yet!");
return ESP_ERR_NOT_SUPPORTED;
}
ESP_APPTRACE_LOGD("fmt %x", fmt);
while ((p = (uint8_t *)strchr((char *)p, '%')) && nargs < ESP_APPTRACE_MAX_VPRINTF_ARGS) {
p++;
if (*p != '%' && *p != 0) {
nargs++;
}
}
ESP_APPTRACE_LOGD("nargs = %d", nargs);
if (p) {
ESP_APPTRACE_LOGE("Failed to store all printf args!");
}
pout = apptrace_get_buffer(1 + sizeof(char *) + nargs * sizeof(uint32_t), &tmo);
if (pout == NULL) {
ESP_APPTRACE_LOGE("Failed to get buffer!");
return -1;
}
p = pout;
*pout = nargs;
pout++;
*(const char **)pout = fmt;
pout += sizeof(char *);
while (nargs-- > 0) {
uint32_t arg = va_arg(ap, uint32_t);
*(uint32_t *)pout = arg;
pout += sizeof(uint32_t);
ESP_APPTRACE_LOGD("arg %x", arg);
}
int ret = apptrace_put_buffer(p, &tmo);
if (ret != ESP_OK) {
ESP_APPTRACE_LOGE("Failed to put printf buf (%d)!", ret);
return -1;
}
return (pout - p);
}
int esp_apptrace_vprintf(const char *fmt, va_list ap)
{
return esp_apptrace_vprintf_to(ESP_APPTRACE_DEST_TRAX, /*ESP_APPTRACE_TMO_INFINITE*/0, fmt, ap);
}
uint8_t *esp_apptrace_buffer_get(esp_apptrace_dest_t dest, size_t size, uint32_t user_tmo)
{
uint32_t tmo = user_tmo;
//TODO: use ptr to HW transport iface struct
uint8_t *(*apptrace_get_buffer)(size_t, uint32_t *);
if (dest == ESP_APPTRACE_DEST_TRAX) {
#if CONFIG_ESP32_APPTRACE_DEST_TRAX
apptrace_get_buffer = esp_apptrace_trax_get_buffer;
#else
ESP_APPTRACE_LOGE("Application tracing via TRAX is disabled in menuconfig!");
return NULL;
#endif
} else {
ESP_APPTRACE_LOGE("Trace destinations other then TRAX are not supported yet!");
return NULL;
}
return apptrace_get_buffer(size, &tmo);
}
esp_err_t esp_apptrace_buffer_put(esp_apptrace_dest_t dest, uint8_t *ptr, uint32_t user_tmo)
{
uint32_t tmo = user_tmo;
//TODO: use ptr to HW transport iface struct
esp_err_t (*apptrace_put_buffer)(uint8_t *, uint32_t *);
if (dest == ESP_APPTRACE_DEST_TRAX) {
#if CONFIG_ESP32_APPTRACE_DEST_TRAX
apptrace_put_buffer = esp_apptrace_trax_put_buffer;
#else
ESP_APPTRACE_LOGE("Application tracing via TRAX is disabled in menuconfig!");
return ESP_ERR_NOT_SUPPORTED;
#endif
} else {
ESP_APPTRACE_LOGE("Trace destinations other then TRAX are not supported yet!");
return ESP_ERR_NOT_SUPPORTED;
}
return apptrace_put_buffer(ptr, &tmo);
}
esp_err_t esp_apptrace_flush_nolock(esp_apptrace_dest_t dest, uint32_t min_sz, uint32_t tmo)
{
//TODO: use ptr to HW transport iface struct
esp_err_t (*apptrace_flush)(uint32_t, uint32_t);
if (dest == ESP_APPTRACE_DEST_TRAX) {
#if CONFIG_ESP32_APPTRACE_DEST_TRAX
apptrace_flush = esp_apptrace_trax_flush;
#else
ESP_APPTRACE_LOGE("Application tracing via TRAX is disabled in menuconfig!");
return ESP_ERR_NOT_SUPPORTED;
#endif
} else {
ESP_APPTRACE_LOGE("Trace destinations other then TRAX are not supported yet!");
return ESP_ERR_NOT_SUPPORTED;
}
return apptrace_flush(min_sz, tmo);
}
esp_err_t esp_apptrace_flush(esp_apptrace_dest_t dest, uint32_t tmo)
{
int res;
res = esp_apptrace_lock(&tmo);
if (res != ESP_OK) {
ESP_APPTRACE_LOGE("Failed to lock apptrace data (%d)!", res);
return res;
}
res = esp_apptrace_flush_nolock(dest, 0, tmo);
if (res != ESP_OK) {
ESP_APPTRACE_LOGE("Failed to flush apptrace data (%d)!", res);
}
if (esp_apptrace_unlock() != ESP_OK) {
assert(false && "Failed to unlock apptrace data!");
}
return res;
}
#endif
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