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desklock/firmware/components/esp_hosted/slave/main/interface.h
T
jpmschweitzerandClaude Fable 5 cb5826e02b
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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

139 lines
3.1 KiB
C

/*
* SPDX-FileCopyrightText: 2015-2025 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef __TRANSPORT_LAYER_INTERFACE_H
#define __TRANSPORT_LAYER_INTERFACE_H
#ifdef __cplusplus
extern "C" {
#endif
#include "esp_err.h"
#include "esp_hosted_log.h"
#include "esp_hosted_transport.h"
#ifdef CONFIG_ESP_SDIO_HOST_INTERFACE
#if CONFIG_SOC_SDIO_SLAVE_SUPPORTED
#include "driver/sdio_slave.h"
#else
#error "SDIO is not supported for this chipset"
#endif
#endif
#ifdef CONFIG_ESP_SPI_HD_HOST_INTERFACE
#include "driver/spi_slave_hd.h"
#endif
typedef enum {
LENGTH_1_BYTE = 1,
LENGTH_2_BYTE = 2,
LENGTH_3_BYTE = 3,
LENGTH_4_BYTE = 4,
} byte_length;
typedef void *wlan_buf_handle_t;
typedef enum {
SDIO = 0,
SPI = 1,
SPI_HD = 2,
UART = 3,
} transport_layer;
typedef enum {
DEINIT,
DEACTIVE,
ACTIVE,
} INTERFACE_STATE;
typedef struct {
union {
#ifdef CONFIG_ESP_SDIO_HOST_INTERFACE
sdio_slave_buf_handle_t sdio_buf_handle;
#endif
#ifdef CONFIG_ESP_SPI_HD_HOST_INTERFACE
spi_slave_hd_data_t * spi_hd_trans_handle;
#endif
wlan_buf_handle_t wlan_buf_handle;
void *priv_buffer_handle;
};
uint8_t if_type;
uint8_t if_num;
uint8_t *payload;
uint8_t flag;
uint16_t payload_len;
uint16_t seq_num;
#if CONFIG_ESP_SPI_HD_HOST_INTERFACE || CONFIG_ESP_UART_HOST_INTERFACE || CONFIG_ESP_SPI_HOST_INTERFACE
uint8_t wifi_flow_ctrl_en;
#endif
void (*free_buf_handle)(void *buf_handle);
} interface_buffer_handle_t;
typedef struct {
/*
union {
} phy_context;
*/
INTERFACE_STATE state;
}interface_handle_t;
#if CONFIG_ESP_SPI_HOST_INTERFACE
#define MAX_TRANSPORT_BUF_SIZE ESP_TRANSPORT_SPI_MAX_BUF_SIZE
#elif CONFIG_ESP_SDIO_HOST_INTERFACE
#define MAX_TRANSPORT_BUF_SIZE ESP_TRANSPORT_SDIO_MAX_BUF_SIZE
#elif CONFIG_ESP_SPI_HD_HOST_INTERFACE
#define MAX_TRANSPORT_BUF_SIZE ESP_TRANSPORT_SPI_HD_MAX_BUF_SIZE
#elif CONFIG_ESP_UART_HOST_INTERFACE
#define MAX_TRANSPORT_BUF_SIZE ESP_TRANSPORT_UART_MAX_BUF_SIZE
#endif
#define BSSID_BYTES_SIZE 6
typedef struct {
interface_handle_t * (*init)(void);
int32_t (*write)(interface_handle_t *handle, interface_buffer_handle_t *buf_handle);
int (*read)(interface_handle_t *handle, interface_buffer_handle_t *buf_handle);
esp_err_t (*reset)(interface_handle_t *handle);
void (*deinit)(interface_handle_t *handle);
} if_ops_t;
typedef struct {
transport_layer type;
void *priv;
if_ops_t *if_ops;
int (*event_handler)(uint8_t bitmap);
} interface_context_t;
typedef struct {
uint8_t throttle_high_threshold;
uint8_t throttle_low_threshold;
} slave_config_t;
typedef struct {
uint8_t current_throttling;
} slave_state_t;
interface_context_t * interface_insert_driver(int (*callback)(uint8_t val));
int interface_remove_driver(void);
void generate_startup_event(uint8_t cap, uint32_t ext_cap);
int send_to_host_queue(interface_buffer_handle_t *buf_handle, uint8_t queue_type);
void send_dhcp_dns_info_to_host(uint8_t network_up, uint8_t send_wifi_connected);
#ifndef min
#define min(a, b) ((a) < (b) ? (a) : (b))
#endif
extern slave_config_t slv_cfg_g;
extern slave_state_t slv_state_g;
#ifdef __cplusplus
}
#endif
#endif