Fork fix: the SDIO wedge is FIXED (esp-hosted-mcu #167)

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>
2026-07-15 09:50:27 +02:00
parent ac9d24e0f9
commit cb5826e02b
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+/*
+ * SPDX-FileCopyrightText: 2026 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef __SLAVE_UTIL_H__
+#define __SLAVE_UTIL_H__
+
+#include "slave_config.h"
+#include "driver/uart.h"
+
+#include "mempool.h"
+
+#if H_USE_MEMPOOL
+
+  #define MEMPOOL_ALLOC(pool, nbytes, need_memset) return hosted_mempool_alloc(pool, nbytes, need_memset);
+
+  #define MEMPOOL_FREE(pool, buf) hosted_mempool_free(pool, buf)
+
+#else // H_USE_MEMPOOL
+
+  #define MEMPOOL_ALLOC(pool, nbytes, need_memset) do {        \
+    void *ptr = heap_caps_malloc(nbytes,                       \
+      MALLOC_CAP_INTERNAL | MALLOC_CAP_DMA | MALLOC_CAP_8BIT); \
+    if (ptr && need_memset)                                    \
+      memset(ptr, 0, nbytes);                                  \
+    return ptr;                                                \
+  } while (0);
+
+  #define MEMPOOL_FREE(pool, buf) do {                         \
+    if (buf) free(buf);                                        \
+  } while (0);
+
+#endif // H_USE_MEMPOOL
+
+/*
+ * contains common util functions
+ */
+
+// memory functions used by ESP-Hosted common mempool
+void * slave_util_malloc(size_t size, hosted_mem_cap_t cap);
+void * slave_util_calloc(size_t num_elem, size_t size_elem, hosted_mem_cap_t cap);
+
+#endif