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ethernet: support OpenCores ethernet MAC

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OpenCores Ethernet MAC has a relatively simple interface, and is
already supported in QEMU. This makes it a good candidate for enabling
network support when running IDF apps in QEMU, compared to the
relatively more complex task of writing a QEMU model of ESP32 EMAC.

This driver is written with QEMU in mind: it does not implement or
handle things that aren't implemented or handled in the QEMU model:
error flags, error interrupts. The transmit part of the driver also
assumes that the TX operation is done immediately when the TX
descriptor is written (which is the case with QEMU), hence waiting for
the TX operation to complete is not necessary.

For simplicity, the driver assumes that the peripheral register
occupy the same memory range as the ESP32 EMAC registers, and the
same interrupt source number is used.


* Original commit: espressif/esp-idf@31dac92e5f
This commit is contained in:
Ivan Grokhotkov
2019-10-01 18:50:34 +02:00
committed by suren-gabrielyan-espressif
parent 286c646725
commit 7dfe14c83d
2 changed files with 16 additions and 0 deletions
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11
examples/common_components/protocol_examples_common/Kconfig.projbuild
View File

@ -49,6 +49,17 @@ menu "Example Connection Configuration"
select ETH_USE_SPI_ETHERNET select ETH_USE_SPI_ETHERNET
help help
Select external SPI-Ethernet module. Select external SPI-Ethernet module.
config EXAMPLE_USE_OPENETH
bool "OpenCores Ethernet MAC (EXPERIMENTAL)"
select ETH_USE_OPENETH
help
When this option is enabled, the example is built with support for
OpenCores Ethernet MAC, which allows testing the example in QEMU.
Note that this option is used for internal testing purposes, and
not officially supported. Examples built with this option enabled
will not run on a real ESP32 chip.
endchoice endchoice
if EXAMPLE_USE_INTERNAL_ETHERNET if EXAMPLE_USE_INTERNAL_ETHERNET

5
examples/common_components/protocol_examples_common/connect.c
View File

@ -232,7 +232,12 @@ static void start(void)
eth_dm9051_config_t dm9051_config = ETH_DM9051_DEFAULT_CONFIG(spi_handle); eth_dm9051_config_t dm9051_config = ETH_DM9051_DEFAULT_CONFIG(spi_handle);
s_mac = esp_eth_mac_new_dm9051(&dm9051_config, &mac_config); s_mac = esp_eth_mac_new_dm9051(&dm9051_config, &mac_config);
s_phy = esp_eth_phy_new_dm9051(&phy_config); s_phy = esp_eth_phy_new_dm9051(&phy_config);
#elif CONFIG_EXAMPLE_USE_OPENETH
phy_config.autonego_timeout_ms = 100;
s_mac = esp_eth_mac_new_openeth(&mac_config);
s_phy = esp_eth_phy_new_dp83848(&phy_config);
#endif #endif
esp_eth_config_t config = ETH_DEFAULT_CONFIG(s_mac, s_phy); esp_eth_config_t config = ETH_DEFAULT_CONFIG(s_mac, s_phy);
ESP_ERROR_CHECK(esp_eth_driver_install(&config, &s_eth_handle)); ESP_ERROR_CHECK(esp_eth_driver_install(&config, &s_eth_handle));
s_connection_name = "Ethernet"; s_connection_name = "Ethernet";