// SPDX-License-Identifier: GPL-2.0-only /* Copyright (c) 2013-2016, The Linux Foundation. All rights reserved. */ /* Qualcomm Technologies, Inc. EMAC Ethernet Controller MAC layer support */ #include <linux/tcp.h> #include <linux/ip.h> #include <linux/ipv6.h> #include <linux/crc32.h> #include <linux/if_vlan.h> #include <linux/jiffies.h> #include <linux/phy.h> #include <linux/of.h> #include <net/ip6_checksum.h> #include "emac.h" #include "emac-sgmii.h" /* EMAC_MAC_CTRL */ #define SINGLE_PAUSE_MODE … #define DEBUG_MODE … #define BROAD_EN … #define MULTI_ALL … #define RX_CHKSUM_EN … #define HUGE … #define SPEED(x) … #define SPEED_MASK … #define SIMR … #define TPAUSE … #define PROM_MODE … #define VLAN_STRIP … #define PRLEN_BMSK … #define PRLEN_SHFT … #define HUGEN … #define FLCHK … #define PCRCE … #define CRCE … #define FULLD … #define MAC_LP_EN … #define RXFC … #define TXFC … #define RXEN … #define TXEN … /* EMAC_DESC_CTRL_3 */ #define RFD_RING_SIZE_BMSK … /* EMAC_DESC_CTRL_4 */ #define RX_BUFFER_SIZE_BMSK … /* EMAC_DESC_CTRL_6 */ #define RRD_RING_SIZE_BMSK … /* EMAC_DESC_CTRL_9 */ #define TPD_RING_SIZE_BMSK … /* EMAC_TXQ_CTRL_0 */ #define NUM_TXF_BURST_PREF_BMSK … #define NUM_TXF_BURST_PREF_SHFT … #define LS_8023_SP … #define TXQ_MODE … #define TXQ_EN … #define IP_OP_SP … #define NUM_TPD_BURST_PREF_BMSK … #define NUM_TPD_BURST_PREF_SHFT … /* EMAC_TXQ_CTRL_1 */ #define JUMBO_TASK_OFFLOAD_THRESHOLD_BMSK … /* EMAC_TXQ_CTRL_2 */ #define TXF_HWM_BMSK … #define TXF_LWM_BMSK … /* EMAC_RXQ_CTRL_0 */ #define RXQ_EN … #define CUT_THRU_EN … #define RSS_HASH_EN … #define NUM_RFD_BURST_PREF_BMSK … #define NUM_RFD_BURST_PREF_SHFT … #define IDT_TABLE_SIZE_BMSK … #define IDT_TABLE_SIZE_SHFT … #define SP_IPV6 … /* EMAC_RXQ_CTRL_1 */ #define JUMBO_1KAH_BMSK … #define JUMBO_1KAH_SHFT … #define RFD_PREF_LOW_TH … #define RFD_PREF_LOW_THRESHOLD_BMSK … #define RFD_PREF_LOW_THRESHOLD_SHFT … #define RFD_PREF_UP_TH … #define RFD_PREF_UP_THRESHOLD_BMSK … #define RFD_PREF_UP_THRESHOLD_SHFT … /* EMAC_RXQ_CTRL_2 */ #define RXF_DOF_THRESFHOLD … #define RXF_DOF_THRESHOLD_BMSK … #define RXF_DOF_THRESHOLD_SHFT … #define RXF_UOF_THRESFHOLD … #define RXF_UOF_THRESHOLD_BMSK … #define RXF_UOF_THRESHOLD_SHFT … /* EMAC_RXQ_CTRL_3 */ #define RXD_TIMER_BMSK … #define RXD_THRESHOLD_BMSK … #define RXD_THRESHOLD_SHFT … /* EMAC_DMA_CTRL */ #define DMAW_DLY_CNT_BMSK … #define DMAW_DLY_CNT_SHFT … #define DMAR_DLY_CNT_BMSK … #define DMAR_DLY_CNT_SHFT … #define DMAR_REQ_PRI … #define REGWRBLEN_BMSK … #define REGWRBLEN_SHFT … #define REGRDBLEN_BMSK … #define REGRDBLEN_SHFT … #define OUT_ORDER_MODE … #define ENH_ORDER_MODE … #define IN_ORDER_MODE … /* EMAC_MAILBOX_13 */ #define RFD3_PROC_IDX_BMSK … #define RFD3_PROC_IDX_SHFT … #define RFD3_PROD_IDX_BMSK … #define RFD3_PROD_IDX_SHFT … /* EMAC_MAILBOX_2 */ #define NTPD_CONS_IDX_BMSK … #define NTPD_CONS_IDX_SHFT … /* EMAC_MAILBOX_3 */ #define RFD0_CONS_IDX_BMSK … #define RFD0_CONS_IDX_SHFT … /* EMAC_MAILBOX_11 */ #define H3TPD_PROD_IDX_BMSK … #define H3TPD_PROD_IDX_SHFT … /* EMAC_AXI_MAST_CTRL */ #define DATA_BYTE_SWAP … #define MAX_BOUND … #define MAX_BTYPE … /* EMAC_MAILBOX_12 */ #define H3TPD_CONS_IDX_BMSK … #define H3TPD_CONS_IDX_SHFT … /* EMAC_MAILBOX_9 */ #define H2TPD_PROD_IDX_BMSK … #define H2TPD_PROD_IDX_SHFT … /* EMAC_MAILBOX_10 */ #define H1TPD_CONS_IDX_BMSK … #define H1TPD_CONS_IDX_SHFT … #define H2TPD_CONS_IDX_BMSK … #define H2TPD_CONS_IDX_SHFT … /* EMAC_ATHR_HEADER_CTRL */ #define HEADER_CNT_EN … #define HEADER_ENABLE … /* EMAC_MAILBOX_0 */ #define RFD0_PROC_IDX_BMSK … #define RFD0_PROC_IDX_SHFT … #define RFD0_PROD_IDX_BMSK … #define RFD0_PROD_IDX_SHFT … /* EMAC_MAILBOX_5 */ #define RFD1_PROC_IDX_BMSK … #define RFD1_PROC_IDX_SHFT … #define RFD1_PROD_IDX_BMSK … #define RFD1_PROD_IDX_SHFT … /* EMAC_MISC_CTRL */ #define RX_UNCPL_INT_EN … /* EMAC_MAILBOX_7 */ #define RFD2_CONS_IDX_BMSK … #define RFD2_CONS_IDX_SHFT … #define RFD1_CONS_IDX_BMSK … #define RFD1_CONS_IDX_SHFT … /* EMAC_MAILBOX_8 */ #define RFD3_CONS_IDX_BMSK … #define RFD3_CONS_IDX_SHFT … /* EMAC_MAILBOX_15 */ #define NTPD_PROD_IDX_BMSK … #define NTPD_PROD_IDX_SHFT … /* EMAC_MAILBOX_16 */ #define H1TPD_PROD_IDX_BMSK … #define H1TPD_PROD_IDX_SHFT … #define RXQ0_RSS_HSTYP_IPV6_TCP_EN … #define RXQ0_RSS_HSTYP_IPV6_EN … #define RXQ0_RSS_HSTYP_IPV4_TCP_EN … #define RXQ0_RSS_HSTYP_IPV4_EN … /* EMAC_EMAC_WRAPPER_TX_TS_INX */ #define EMAC_WRAPPER_TX_TS_EMPTY … #define EMAC_WRAPPER_TX_TS_INX_BMSK … struct emac_skb_cb { … }; #define EMAC_SKB_CB(skb) … #define EMAC_RSS_IDT_SIZE … #define JUMBO_1KAH … #define RXD_TH … #define EMAC_TPD_LAST_FRAGMENT … #define EMAC_TPD_TSTAMP_SAVE … /* EMAC Errors in emac_rrd.word[3] */ #define EMAC_RRD_L4F … #define EMAC_RRD_IPF … #define EMAC_RRD_CRC … #define EMAC_RRD_FAE … #define EMAC_RRD_TRN … #define EMAC_RRD_RNT … #define EMAC_RRD_INC … #define EMAC_RRD_FOV … #define EMAC_RRD_LEN … /* Error bits that will result in a received frame being discarded */ #define EMAC_RRD_ERROR … #define EMAC_RRD_STATS_DW_IDX … #define EMAC_RRD(RXQ, SIZE, IDX) … #define EMAC_RFD(RXQ, SIZE, IDX) … #define EMAC_TPD(TXQ, SIZE, IDX) … #define GET_RFD_BUFFER(RXQ, IDX) … #define GET_TPD_BUFFER(RTQ, IDX) … #define EMAC_TX_POLL_HWTXTSTAMP_THRESHOLD … #define ISR_RX_PKT … void emac_mac_multicast_addr_set(struct emac_adapter *adpt, u8 *addr) { … } void emac_mac_multicast_addr_clear(struct emac_adapter *adpt) { … } /* definitions for RSS */ #define EMAC_RSS_KEY(_i, _type) … #define EMAC_RSS_TBL(_i, _type) … /* Config MAC modes */ void emac_mac_mode_config(struct emac_adapter *adpt) { … } /* Config descriptor rings */ static void emac_mac_dma_rings_config(struct emac_adapter *adpt) { … } /* Config transmit parameters */ static void emac_mac_tx_config(struct emac_adapter *adpt) { … } /* Config receive parameters */ static void emac_mac_rx_config(struct emac_adapter *adpt) { … } /* Config dma */ static void emac_mac_dma_config(struct emac_adapter *adpt) { … } /* set MAC address */ static void emac_set_mac_address(struct emac_adapter *adpt, const u8 *addr) { … } static void emac_mac_config(struct emac_adapter *adpt) { … } void emac_mac_reset(struct emac_adapter *adpt) { … } static void emac_mac_start(struct emac_adapter *adpt) { … } void emac_mac_stop(struct emac_adapter *adpt) { … } /* Free all descriptors of given transmit queue */ static void emac_tx_q_descs_free(struct emac_adapter *adpt) { … } /* Free all descriptors of given receive queue */ static void emac_rx_q_free_descs(struct emac_adapter *adpt) { … } /* Free all buffers associated with given transmit queue */ static void emac_tx_q_bufs_free(struct emac_adapter *adpt) { … } /* Allocate TX descriptor ring for the given transmit queue */ static int emac_tx_q_desc_alloc(struct emac_adapter *adpt, struct emac_tx_queue *tx_q) { … } /* Free all buffers associated with given transmit queue */ static void emac_rx_q_bufs_free(struct emac_adapter *adpt) { … } /* Allocate RX descriptor rings for the given receive queue */ static int emac_rx_descs_alloc(struct emac_adapter *adpt) { … } /* Allocate all TX and RX descriptor rings */ int emac_mac_rx_tx_rings_alloc_all(struct emac_adapter *adpt) { … } /* Free all TX and RX descriptor rings */ void emac_mac_rx_tx_rings_free_all(struct emac_adapter *adpt) { … } /* Initialize descriptor rings */ static void emac_mac_rx_tx_ring_reset_all(struct emac_adapter *adpt) { … } /* Produce new receive free descriptor */ static void emac_mac_rx_rfd_create(struct emac_adapter *adpt, struct emac_rx_queue *rx_q, dma_addr_t addr) { … } /* Fill up receive queue's RFD with preallocated receive buffers */ static void emac_mac_rx_descs_refill(struct emac_adapter *adpt, struct emac_rx_queue *rx_q) { … } static void emac_adjust_link(struct net_device *netdev) { … } /* Bringup the interface/HW */ int emac_mac_up(struct emac_adapter *adpt) { … } /* Bring down the interface/HW */ void emac_mac_down(struct emac_adapter *adpt) { … } /* Consume next received packet descriptor */ static bool emac_rx_process_rrd(struct emac_adapter *adpt, struct emac_rx_queue *rx_q, struct emac_rrd *rrd) { … } /* Produce new transmit descriptor */ static void emac_tx_tpd_create(struct emac_adapter *adpt, struct emac_tx_queue *tx_q, struct emac_tpd *tpd) { … } /* Mark the last transmit descriptor as such (for the transmit packet) */ static void emac_tx_tpd_mark_last(struct emac_adapter *adpt, struct emac_tx_queue *tx_q) { … } static void emac_rx_rfd_clean(struct emac_rx_queue *rx_q, struct emac_rrd *rrd) { … } /* Push the received skb to upper layers */ static void emac_receive_skb(struct emac_rx_queue *rx_q, struct sk_buff *skb, u16 vlan_tag, bool vlan_flag) { … } /* Process receive event */ void emac_mac_rx_process(struct emac_adapter *adpt, struct emac_rx_queue *rx_q, int *num_pkts, int max_pkts) { … } /* get the number of free transmit descriptors */ static unsigned int emac_tpd_num_free_descs(struct emac_tx_queue *tx_q) { … } /* Process transmit event */ void emac_mac_tx_process(struct emac_adapter *adpt, struct emac_tx_queue *tx_q) { … } /* Initialize all queue data structures */ void emac_mac_rx_tx_ring_init_all(struct platform_device *pdev, struct emac_adapter *adpt) { … } /* Fill up transmit descriptors with TSO and Checksum offload information */ static int emac_tso_csum(struct emac_adapter *adpt, struct emac_tx_queue *tx_q, struct sk_buff *skb, struct emac_tpd *tpd) { … } /* Fill up transmit descriptors */ static void emac_tx_fill_tpd(struct emac_adapter *adpt, struct emac_tx_queue *tx_q, struct sk_buff *skb, struct emac_tpd *tpd) { … } /* Transmit the packet using specified transmit queue */ netdev_tx_t emac_mac_tx_buf_send(struct emac_adapter *adpt, struct emac_tx_queue *tx_q, struct sk_buff *skb) { … }
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