// Copyright 2021 Espressif Systems (Shanghai) PTE LTD // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. #pragma once #ifdef __cplusplus extern "C" { #endif #include #include #include "esp_err.h" #include "hal/eth_types.h" #include "soc/emac_dma_struct.h" #include "soc/emac_mac_struct.h" #include "soc/emac_ext_struct.h" /** * @brief Ethernet DMA TX Descriptor * */ typedef struct { volatile union { struct { uint32_t Deferred : 1; /*!< MAC defers before transmission */ uint32_t UnderflowErr : 1; /*!< DMA encountered an empty transmit buffer */ uint32_t ExcessiveDeferral : 1; /*!< Excessive deferral of over 24,288 bit times */ uint32_t CollisionCount : 4; /*!< Number of collisions occurred before transmitted */ uint32_t VLanFrame : 1; /*!< Transmitted frame is a VLAN-type frame */ uint32_t ExcessiveCollision : 1; /*!< Transmission aborted after 16 successive collisions */ uint32_t LateCollision : 1; /*!< Collision occurred after the collision window */ uint32_t NoCarrier : 1; /*!< Carrier Sense signal from the PHY was not asserted */ uint32_t LossCarrier : 1; /*!< Loss of carrier occurred during transmission */ uint32_t PayloadChecksumErr : 1; /*!< Checksum error in TCP/UDP/ICMP datagram payload */ uint32_t FrameFlushed : 1; /*!< DMA or MTL flushed the frame */ uint32_t JabberTimeout : 1; /*!< MAC transmitter has experienced a jabber timeout */ uint32_t ErrSummary : 1; /*!< Error Summary */ uint32_t IPHeadErr : 1; /*!< IP Header Error */ uint32_t TxTimestampStatus : 1; /*!< Timestamp captured for the transmit frame */ uint32_t VLANInsertControl : 2; /*!< VLAN tagging or untagging before transmitting */ uint32_t SecondAddressChained : 1; /*!< Second address in the descriptor is Next Descriptor address */ uint32_t TransmitEndRing : 1; /*!< Descriptor list reached its final descriptor */ uint32_t ChecksumInsertControl : 2; /*!< Control checksum calculation and insertion */ uint32_t CRCReplacementControl : 1; /*!< Control CRC replace */ uint32_t TransmitTimestampEnable : 1; /*!< Enable IEEE1588 harware timestamping */ uint32_t DisablePad : 1; /*!< Control add padding when frame short than 64 bytes */ uint32_t DisableCRC : 1; /*!< Control append CRC to the end of frame */ uint32_t FirstSegment : 1; /*!< Buffer contains the first segment of a frame */ uint32_t LastSegment : 1; /*!< Buffer contains the last segment of a frame */ uint32_t InterruptOnComplete : 1; /*!< Interrupt after frame transmitted */ uint32_t Own : 1; /*!< Owner of this descriptor: DMA controller or host */ }; uint32_t Value; } TDES0; union { struct { uint32_t TransmitBuffer1Size : 13; /*!< First data buffer byte size */ uint32_t Reserved : 3; /*!< Reserved */ uint32_t TransmitBuffer2Size : 13; /*!< Second data buffer byte size */ uint32_t SAInsertControl : 3; /*!< Control MAC add or replace Source Address field */ }; uint32_t Value; } TDES1; uint32_t Buffer1Addr; /*!< Buffer1 address pointer */ uint32_t Buffer2NextDescAddr; /*!< Buffer2 or next descriptor address pointer */ uint32_t Reserved1; /*!< Reserved */ uint32_t Reserved2; /*!< Reserved */ uint32_t TimeStampLow; /*!< Transmit Frame Timestamp Low */ uint32_t TimeStampHigh; /*!< Transmit Frame Timestamp High */ } eth_dma_tx_descriptor_t; #define EMAC_DMATXDESC_CHECKSUM_BYPASS 0 /*!< Checksum engine bypass */ #define EMAC_DMATXDESC_CHECKSUM_IPV4HEADER 1 /*!< IPv4 header checksum insertion */ #define EMAC_DMATXDESC_CHECKSUM_TCPUDPICMPSEGMENT 2 /*!< TCP/UDP/ICMP Checksum Insertion calculated over segment only */ #define EMAC_DMATXDESC_CHECKSUM_TCPUDPICMPFULL 3 /*!< TCP/UDP/ICMP Checksum Insertion fully calculated */ _Static_assert(sizeof(eth_dma_tx_descriptor_t) == 32, "eth_dma_tx_descriptor_t should occupy 32 bytes in memory"); /** * @brief Ethernet DMA RX Descriptor * */ typedef struct { volatile union { struct { uint32_t ExtendStatusAvailable : 1; /*!< Extended statsu is available in RDES4 */ uint32_t CRCErr : 1; /*!< CRC error occurred on frame */ uint32_t DribbleBitErr : 1; /*!< frame contains non int multiple of 8 bits */ uint32_t ReceiveErr : 1; /*!< Receive error */ uint32_t ReceiveWatchdogTimeout : 1; /*!< Receive Watchdog timeout */ uint32_t FrameType : 1; /*!< Ethernet type or IEEE802.3 */ uint32_t LateCollision : 1; /*!< Late collision occurred during reception */ uint32_t TSAvailIPChecksumErrGiantFrame : 1; /*!< Timestamp available or IP Checksum error or Giant frame */ uint32_t LastDescriptor : 1; /*!< Last buffer of the frame */ uint32_t FirstDescriptor : 1; /*!< First buffer of the frame */ uint32_t VLANTag : 1; /*!< VLAN Tag: received frame is a VLAN frame */ uint32_t OverflowErr : 1; /*!< Frame was damaged due to buffer overflow */ uint32_t LengthErr : 1; /*!< Frame size not matching with length field */ uint32_t SourceAddrFilterFail : 1; /*!< SA field of frame failed the SA filter */ uint32_t DescriptorErr : 1; /*!< Frame truncated and DMA doesn't own next descriptor */ uint32_t ErrSummary : 1; /*!< Error Summary, OR of all errors in RDES */ uint32_t FrameLength : 14; /*!< Byte length of received frame */ uint32_t DestinationAddrFilterFail : 1; /*!< Frame failed in the DA Filter in the MAC */ uint32_t Own : 1; /*!< Owner of this descriptor: DMA controller or host */ }; uint32_t Value; } RDES0; union { struct { uint32_t ReceiveBuffer1Size : 13; /*!< First data buffer size in bytes */ uint32_t Reserved1 : 1; /*!< Reserved */ uint32_t SecondAddressChained : 1; /*!< Seconde address is the Next Descriptor address */ uint32_t ReceiveEndOfRing : 1; /*!< Descriptor reached its final descriptor */ uint32_t ReceiveBuffer2Size : 13; /*!< Second data buffer size in bytes */ uint32_t Reserved : 2; /*!< Reserved */ uint32_t DisableInterruptOnComplete : 1; /*!< Disable the assertion of interrupt to host */ }; uint32_t Value; } RDES1; uint32_t Buffer1Addr; /*!< Buffer1 address pointer */ uint32_t Buffer2NextDescAddr; /*!< Buffer2 or next descriptor address pointer */ volatile union { struct { uint32_t IPPayloadType : 3; /*!< Type of payload in the IP datagram */ uint32_t IPHeadErr : 1; /*!< IP header error */ uint32_t IPPayloadErr : 1; /*!< IP payload error */ uint32_t IPChecksumBypass : 1; /*!< Checksum offload engine is bypassed */ uint32_t IPv4PacketReceived : 1; /*!< Received packet is an IPv4 packet */ uint32_t IPv6PacketReceived : 1; /*!< Received packet is an IPv6 packet */ uint32_t MessageType : 4; /*!< PTP Message Type */ uint32_t PTPFrameType : 1; /*!< PTP message is over Ethernet or IPv4/IPv6 */ uint32_t PTPVersion : 1; /*!< Version of PTP protocol */ uint32_t TimestampDropped : 1; /*!< Timestamp dropped because of overflow */ uint32_t Reserved1 : 1; /*!< Reserved */ uint32_t AVPacketReceived : 1; /*!< AV packet is received */ uint32_t AVTaggedPacketReceived : 1; /*!< AV tagged packet is received */ uint32_t VLANTagPrioVal : 3; /*!< VLAN tag's user value in the received packekt */ uint32_t Reserved2 : 3; /*!< Reserved */ uint32_t Layer3FilterMatch : 1; /*!< Received frame matches one of the enabled Layer3 IP */ uint32_t Layer4FilterMatch : 1; /*!< Received frame matches one of the enabled Layer4 IP */ uint32_t Layer3Layer4FilterNumberMatch : 2; /*!< Number of Layer3 and Layer4 Filter that matches the received frame */ uint32_t Reserved3 : 4; /*!< Reserved */ }; uint32_t Value; } ExtendedStatus; uint32_t Reserved; /*!< Reserved */ uint32_t TimeStampLow; /*!< Receive frame timestamp low */ uint32_t TimeStampHigh; /*!< Receive frame timestamp high */ } eth_dma_rx_descriptor_t; _Static_assert(sizeof(eth_dma_rx_descriptor_t) == 32, "eth_dma_rx_descriptor_t should occupy 32 bytes in memory"); typedef struct { emac_mac_dev_t *mac_regs; emac_dma_dev_t *dma_regs; emac_ext_dev_t *ext_regs; uint8_t **rx_buf; uint8_t **tx_buf; void *descriptors; eth_dma_rx_descriptor_t *rx_desc; eth_dma_tx_descriptor_t *tx_desc; } emac_hal_context_t; void emac_hal_init(emac_hal_context_t *hal, void *descriptors, uint8_t **rx_buf, uint8_t **tx_buf); void emac_hal_iomux_init_mii(void); void emac_hal_iomux_init_rmii(void); void emac_hal_iomux_rmii_clk_input(void); void emac_hal_iomux_rmii_clk_ouput(int num); void emac_hal_iomux_init_tx_er(void); void emac_hal_iomux_init_rx_er(void); void emac_hal_reset_desc_chain(emac_hal_context_t *hal); void emac_hal_reset(emac_hal_context_t *hal); bool emac_hal_is_reset_done(emac_hal_context_t *hal); void emac_hal_set_csr_clock_range(emac_hal_context_t *hal, int freq); void emac_hal_init_mac_default(emac_hal_context_t *hal); void emac_hal_init_dma_default(emac_hal_context_t *hal); void emac_hal_set_speed(emac_hal_context_t *hal, uint32_t speed); void emac_hal_set_duplex(emac_hal_context_t *hal, eth_duplex_t duplex); void emac_hal_set_promiscuous(emac_hal_context_t *hal, bool enable); /** * @brief Send MAC-CTRL frames to peer (EtherType=0x8808, opcode=0x0001, dest_addr=MAC-specific-ctrl-proto-01 (01:80:c2:00:00:01)) */ void emac_hal_send_pause_frame(emac_hal_context_t *hal, bool enable); bool emac_hal_is_mii_busy(emac_hal_context_t *hal); void emac_hal_set_phy_cmd(emac_hal_context_t *hal, uint32_t phy_addr, uint32_t phy_reg, bool write); void emac_hal_set_phy_data(emac_hal_context_t *hal, uint32_t reg_value); uint32_t emac_hal_get_phy_data(emac_hal_context_t *hal); void emac_hal_set_address(emac_hal_context_t *hal, uint8_t *mac_addr); void emac_hal_start(emac_hal_context_t *hal); void emac_hal_stop(emac_hal_context_t *hal); uint32_t emac_hal_get_tx_desc_owner(emac_hal_context_t *hal); uint32_t emac_hal_transmit_frame(emac_hal_context_t *hal, uint8_t *buf, uint32_t length); uint32_t emac_hal_receive_frame(emac_hal_context_t *hal, uint8_t *buf, uint32_t size, uint32_t *frames_remain, uint32_t *free_desc); void emac_hal_enable_flow_ctrl(emac_hal_context_t *hal, bool enable); uint32_t emac_hal_get_intr_enable_status(emac_hal_context_t *hal); uint32_t emac_hal_get_intr_status(emac_hal_context_t *hal); void emac_hal_clear_corresponding_intr(emac_hal_context_t *hal, uint32_t bits); void emac_hal_clear_all_intr(emac_hal_context_t *hal); #ifdef __cplusplus } #endif