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fix(eppp): Fix SIDO host to check/clear interrupts atomically

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This commit is contained in:
David Cermak
2024-05-16 17:00:13 +02:00
parent 085dd79079
commit 402176c9e0
3 changed files with 22 additions and 17 deletions
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1
components/eppp_link/eppp_sdio.h
View File

@ -8,6 +8,7 @@
#define MAX_SDIO_PAYLOAD 1500
#define SDIO_ALIGN(size) (((size) + 3U) & ~(3U))
#define SDIO_PAYLOAD SDIO_ALIGN(MAX_SDIO_PAYLOAD)
#define PPP_SOF 0x7E
// Interrupts and registers
#define SLAVE_INTR 0

23
components/eppp_link/eppp_sdio_host.c
View File

@ -22,14 +22,13 @@
#define TIMEOUT_MAX UINT32_MAX
// Short timeout for sending/receiving ESSL packets
#define PACKET_TIMEOUT_MS 50
// Used for padding unaligned packets, to simplify the logic and keep PPP protocol intact when padded
#define PPP_SOF 0x7E
static const char *TAG = "eppp_sdio_host";
static SemaphoreHandle_t s_essl_mutex = NULL;
static essl_handle_t s_essl = NULL;
static sdmmc_card_t *s_card = NULL;
static CACHE_ALIGNED_ATTR uint8_t send_buffer[SDIO_PAYLOAD];
static DRAM_DMA_ALIGNED_ATTR uint8_t send_buffer[SDIO_PAYLOAD];
static DMA_ATTR uint8_t rcv_buffer[SDIO_PAYLOAD];
esp_err_t eppp_sdio_host_tx(void *h, void *buffer, size_t len)
@ -92,6 +91,7 @@ esp_err_t eppp_sdio_host_init(struct eppp_config_sdio_s *eppp_config)
sdmmc_host_t config = SDMMC_HOST_DEFAULT();
config.flags = SDMMC_HOST_FLAG_4BIT;
config.flags |= SDMMC_HOST_FLAG_ALLOC_ALIGNED_BUF;
config.max_freq_khz = SDMMC_FREQ_HIGHSPEED;
s_card = (sdmmc_card_t *)malloc(sizeof(sdmmc_card_t));
@ -117,9 +117,8 @@ err:
static esp_err_t get_intr(uint32_t *out_raw)
{
esp_err_t ret = ESP_OK;
ESP_GOTO_ON_ERROR(essl_wait_int(s_essl, TIMEOUT_MAX), err, TAG, "essl-wait-int failed");
ESP_GOTO_ON_ERROR(essl_get_intr(s_essl, out_raw, NULL, TIMEOUT_MAX), err, TAG, "essl-get-int failed");
ESP_GOTO_ON_ERROR(essl_clear_intr(s_essl, *out_raw, TIMEOUT_MAX), err, TAG, "essl-clear-int failed");
ESP_GOTO_ON_ERROR(essl_get_intr(s_essl, out_raw, NULL, 0), err, TAG, "essl-get-int failed");
ESP_GOTO_ON_ERROR(essl_clear_intr(s_essl, *out_raw, 0), err, TAG, "essl-clear-int failed");
ESP_LOGD(TAG, "intr: %08"PRIX32, *out_raw);
err:
return ret;
@ -128,16 +127,22 @@ err:
esp_err_t eppp_sdio_host_rx(esp_netif_t *netif)
{
uint32_t intr;
esp_err_t err = get_intr(&intr);
esp_err_t err = essl_wait_int(s_essl, TIMEOUT_MAX);
if (err == ESP_ERR_TIMEOUT) {
return ESP_OK;
}
xSemaphoreTake(s_essl_mutex, portMAX_DELAY);
err = get_intr(&intr);
if (err == ESP_ERR_TIMEOUT) {
xSemaphoreGive(s_essl_mutex);
return ESP_OK;
}
if (err != ESP_OK) {
ESP_LOGE(TAG, "failed to check for interrupts %d", err);
xSemaphoreGive(s_essl_mutex);
return ESP_FAIL;
}
if (intr & ESSL_SDIO_DEF_ESP32.new_packet_intr_mask) {
xSemaphoreTake(s_essl_mutex, portMAX_DELAY);
esp_err_t ret;
do {
size_t size_read = SDIO_PAYLOAD;
@ -158,8 +163,8 @@ esp_err_t eppp_sdio_host_rx(esp_netif_t *netif)
}
}
} while (ret == ESP_ERR_NOT_FINISHED);
xSemaphoreGive(s_essl_mutex);
}
xSemaphoreGive(s_essl_mutex);
return ESP_OK;
}

15
components/eppp_link/eppp_sdio_slave.c
View File

@ -12,12 +12,12 @@
#include "eppp_sdio.h"
#include "esp_check.h"
#if CONFIG_EPPP_LINK_DEVICE_SDIO_SLAV
#if CONFIG_EPPP_LINK_DEVICE_SDIO_SLAVE
#define BUFFER_NUM 4
#define BUFFER_SIZE SDIO_PAYLOAD
static const char *TAG = "eppp_sdio_slave";
static WORD_ALIGNED_ATTR uint8_t sdio_slave_rx_buffer[BUFFER_NUM][SDIO_PAYLOAD];
static WORD_ALIGNED_ATTR uint8_t sdio_slave_tx_buffer[SDIO_PAYLOAD];
static DMA_ATTR uint8_t sdio_slave_rx_buffer[BUFFER_NUM][BUFFER_SIZE];
static DMA_ATTR uint8_t sdio_slave_tx_buffer[SDIO_PAYLOAD];
static int s_slave_request = 0;
esp_err_t eppp_sdio_slave_tx(void *h, void *buffer, size_t len)
@ -30,7 +30,7 @@ esp_err_t eppp_sdio_slave_tx(void *h, void *buffer, size_t len)
size_t send_len = SDIO_ALIGN(len);
if (send_len > len) {
// pad with SOF's if the size is not 4 bytes aligned
memset(&sdio_slave_tx_buffer[len], 0x7E, send_len - len);
memset(&sdio_slave_tx_buffer[len], PPP_SOF, send_len - len);
}
ESP_LOG_BUFFER_HEXDUMP(TAG, sdio_slave_tx_buffer, send_len, ESP_LOG_VERBOSE);
@ -92,6 +92,7 @@ again:
goto again;
}
}
ESP_LOG_BUFFER_HEXDUMP(TAG, ptr, length, ESP_LOG_VERBOSE);
return ESP_OK;
}
ESP_LOGE(TAG, "Error when receiving packet %d", ret);
@ -113,10 +114,8 @@ esp_err_t eppp_sdio_slave_init(void)
sdio_slave_config_t config = {
.sending_mode = SDIO_SLAVE_SEND_PACKET,
.send_queue_size = BUFFER_NUM,
.recv_buffer_size = SDIO_PAYLOAD,
.recv_buffer_size = BUFFER_SIZE,
.event_cb = event_cb,
.flags = SDIO_SLAVE_FLAG_HIGH_SPEED,
.timing = SDIO_SLAVE_TIMING_NSEND_PSAMPLE,
};
esp_err_t ret = sdio_slave_initialize(&config);
if (ret != ESP_OK) {