jpmschweitzerandClaude Fable 5
cb5826e02b
Root cause (verified against our exact IDF tree, not the community guess): the "258" in "sdio_write_task: Failed to send data: 258" is NOT a timeout (that is 263). 258 = 0x102 = ESP_ERR_INVALID_ARG. On the ESP32-P4, block- mode CMD53 writes require the SOURCE buffer to be 64-byte (cache-line) aligned; the IDF sdmmc driver rejects a misaligned source with INVALID_ARG BEFORE any bus activity. esp_hosts write loop then declares "Unrecoverable host sdio state" and reboots the whole P4. The audio TX payload is not 64-aligned, so streaming mic audio wedged on the very FIRST frame (which is exactly what we saw: listening -> instant Failed to send -> reboot). This also explains why buffer/queue/clock/retry tuning all did nothing: the write never reached the bus. And why our symptom was instant, not after ~100 writes (the community block-mode-desync theory) — it is the first misaligned buffer, every time. Fix: vendored esp_hosted 2.12.11 as an editable local component (overrides the registry copy) and bounce a misaligned TX payload through one aligned DMA scratch buffer in hosted_sdio_write_block (port_esp_hosted_host_sdio.c). TX is serialized by the bus lock so a single static bounce buffer is safe; freed in hosted_sdio_deinit. Host-only change — no C6 reflash. VERIFIED ON HARDWARE (autonomous self-test): 40s of continuous mic-audio upstream streaming — the traffic that previously wedged on the first frame — ran clean, zero timeouts, zero reboots. A guarded SDIO_TX_SELFTEST harness is kept (compiled out) for future SDIO stress testing. Credit: root cause + patch designed via multi-agent investigation; the precise 258=INVALID_ARG decode (correcting the upstream community timeout assumption) came from checking our actual esp_err.h. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
55 lines
1.5 KiB
C
55 lines
1.5 KiB
C
/*
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* SPDX-FileCopyrightText: 2015-2026 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef __MEMPOOL_H__
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#define __MEMPOOL_H__
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#include <string.h>
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#include <stdio.h>
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#include <sys/queue.h>
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#include <stdint.h>
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#include "sdkconfig.h"
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#define MEMPOOL_OK 0
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#define MEMPOOL_FAIL -1
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#define MEMSET_REQUIRED 1
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#define MEMSET_NOT_REQUIRED 0
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typedef struct hosted_mempool_t hosted_mempool_t;
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// memory capability requested by mempool
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typedef enum {
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HOSTED_MEM_CAP_NONE, // generic memory allocation
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HOSTED_MEM_CAP_DMA, // memory allocated must be DMA capable
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HOSTED_MEM_CAP_MAX
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} hosted_mem_cap_t;
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typedef struct {
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// pointer and size of preallocated memory to use. If NULL, mempool allocates internally
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void *pre_allocated_mem;
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size_t pre_allocated_mem_size;
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size_t num_blocks;
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size_t block_size;
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int alignment_in_bytes;
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// required functions to malloc, calloc, memset and free memory using capability based allocs
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void * (*malloc)(size_t size, hosted_mem_cap_t cap);
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void * (*calloc)(size_t num_elem, size_t size_elem, hosted_mem_cap_t cap);
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void * (*memset)(void *s, int c, size_t n);
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void (*free)(void *ptr);
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} hosted_mempool_config_t;
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hosted_mempool_t * hosted_mempool_create(hosted_mempool_config_t * config);
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void hosted_mempool_destroy(struct hosted_mempool_t *mempool);
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void * hosted_mempool_alloc(struct hosted_mempool_t *mempool,
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size_t nbytes, uint8_t need_memset);
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int hosted_mempool_free(struct hosted_mempool_t *mempool, void *mem);
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#endif
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