kopia lustrzana https://github.com/espressif/esp-idf
esp_eth: optimize dm9051 Tx throughput
rodzic
44d13c648b
commit
2c24beca04
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@ -1,16 +1,9 @@
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// Copyright 2019 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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/*
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* SPDX-FileCopyrightText: 2019-2021 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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#include <string.h>
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#include <stdlib.h>
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#include <sys/cdefs.h>
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@ -20,6 +13,7 @@
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#include "esp_log.h"
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#include "esp_check.h"
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#include "esp_eth.h"
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#include "esp_timer.h"
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#include "esp_system.h"
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#include "esp_intr_alloc.h"
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#include "esp_heap_caps.h"
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@ -633,16 +627,24 @@ static esp_err_t emac_dm9051_transmit(esp_eth_mac_t *mac, uint8_t *buf, uint32_t
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emac_dm9051_t *emac = __containerof(mac, emac_dm9051_t, parent);
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/* Check if last transmit complete */
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uint8_t tcr = 0;
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ESP_GOTO_ON_ERROR(dm9051_register_read(emac, DM9051_TCR, &tcr), err, TAG, "read TCR failed");
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ESP_GOTO_ON_FALSE(!(tcr & TCR_TXREQ), ESP_ERR_INVALID_STATE, err, TAG, "last transmit still in progress");
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int64_t wait_time = esp_timer_get_time();
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do {
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ESP_GOTO_ON_ERROR(dm9051_register_read(emac, DM9051_TCR, &tcr), err, TAG, "read TCR failed");
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} while((tcr & TCR_TXREQ) && ((esp_timer_get_time() - wait_time) < 100));
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if (tcr & TCR_TXREQ) {
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ESP_LOGE(TAG, "last transmit still in progress, cannot send.");
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return ESP_ERR_INVALID_STATE;
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}
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/* set tx length */
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ESP_GOTO_ON_ERROR(dm9051_register_write(emac, DM9051_TXPLL, length & 0xFF), err, TAG, "write TXPLL failed");
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ESP_GOTO_ON_ERROR(dm9051_register_write(emac, DM9051_TXPLH, (length >> 8) & 0xFF), err, TAG, "write TXPLH failed");
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/* copy data to tx memory */
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ESP_GOTO_ON_ERROR(dm9051_memory_write(emac, buf, length), err, TAG, "write memory failed");
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/* issue tx polling command */
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tcr |= TCR_TXREQ;
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ESP_GOTO_ON_ERROR(dm9051_register_write(emac, DM9051_TCR, tcr), err, TAG, "write TCR failed");
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ESP_GOTO_ON_ERROR(dm9051_register_write(emac, DM9051_TCR, TCR_TXREQ), err, TAG, "write TCR failed");
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return ESP_OK;
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err:
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return ret;
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