// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0-or-later /* * Copyright 2008 - 2015 Freescale Semiconductor Inc. */ #define pr_fmt(fmt) … #include "fman_dtsec.h" #include "fman.h" #include "mac.h" #include <linux/slab.h> #include <linux/bitrev.h> #include <linux/io.h> #include <linux/delay.h> #include <linux/phy.h> #include <linux/crc32.h> #include <linux/of_mdio.h> #include <linux/mii.h> #include <linux/netdevice.h> /* TBI register addresses */ #define MII_TBICON … /* TBICON register bit fields */ #define TBICON_SOFT_RESET … #define TBICON_DISABLE_RX_DIS … #define TBICON_DISABLE_TX_DIS … #define TBICON_AN_SENSE … #define TBICON_CLK_SELECT … #define TBICON_MI_MODE … /* Interrupt Mask Register (IMASK) */ #define DTSEC_IMASK_BREN … #define DTSEC_IMASK_RXCEN … #define DTSEC_IMASK_MSROEN … #define DTSEC_IMASK_GTSCEN … #define DTSEC_IMASK_BTEN … #define DTSEC_IMASK_TXCEN … #define DTSEC_IMASK_TXEEN … #define DTSEC_IMASK_LCEN … #define DTSEC_IMASK_CRLEN … #define DTSEC_IMASK_XFUNEN … #define DTSEC_IMASK_ABRTEN … #define DTSEC_IMASK_IFERREN … #define DTSEC_IMASK_MAGEN … #define DTSEC_IMASK_MMRDEN … #define DTSEC_IMASK_MMWREN … #define DTSEC_IMASK_GRSCEN … #define DTSEC_IMASK_TDPEEN … #define DTSEC_IMASK_RDPEEN … #define DTSEC_EVENTS_MASK … /* dtsec timestamp event bits */ #define TMR_PEMASK_TSREEN … #define TMR_PEVENT_TSRE … /* Group address bit indication */ #define MAC_GROUP_ADDRESS … /* Defaults */ #define DEFAULT_HALFDUP_RETRANSMIT … #define DEFAULT_HALFDUP_COLL_WINDOW … #define DEFAULT_TX_PAUSE_TIME … #define DEFAULT_RX_PREPEND … #define DEFAULT_PREAMBLE_LEN … #define DEFAULT_TX_PAUSE_TIME_EXTD … #define DEFAULT_NON_BACK_TO_BACK_IPG1 … #define DEFAULT_NON_BACK_TO_BACK_IPG2 … #define DEFAULT_MIN_IFG_ENFORCEMENT … #define DEFAULT_BACK_TO_BACK_IPG … #define DEFAULT_MAXIMUM_FRAME … /* register related defines (bits, field offsets..) */ #define DTSEC_ID2_INT_REDUCED_OFF … #define DTSEC_ECNTRL_GMIIM … #define DTSEC_ECNTRL_TBIM … #define DTSEC_ECNTRL_RPM … #define DTSEC_ECNTRL_R100M … #define DTSEC_ECNTRL_RMM … #define DTSEC_ECNTRL_SGMIIM … #define DTSEC_ECNTRL_QSGMIIM … #define TCTRL_TTSE … #define TCTRL_GTS … #define RCTRL_PAL_MASK … #define RCTRL_PAL_SHIFT … #define RCTRL_GHTX … #define RCTRL_RTSE … #define RCTRL_GRS … #define RCTRL_MPROM … #define RCTRL_RSF … #define RCTRL_UPROM … #define MACCFG1_SOFT_RESET … #define MACCFG1_RX_FLOW … #define MACCFG1_TX_FLOW … #define MACCFG1_TX_EN … #define MACCFG1_RX_EN … #define MACCFG2_NIBBLE_MODE … #define MACCFG2_BYTE_MODE … #define MACCFG2_PAD_CRC_EN … #define MACCFG2_FULL_DUPLEX … #define MACCFG2_PREAMBLE_LENGTH_MASK … #define MACCFG2_PREAMBLE_LENGTH_SHIFT … #define IPGIFG_NON_BACK_TO_BACK_IPG_1_SHIFT … #define IPGIFG_NON_BACK_TO_BACK_IPG_2_SHIFT … #define IPGIFG_MIN_IFG_ENFORCEMENT_SHIFT … #define IPGIFG_NON_BACK_TO_BACK_IPG_1 … #define IPGIFG_NON_BACK_TO_BACK_IPG_2 … #define IPGIFG_MIN_IFG_ENFORCEMENT … #define IPGIFG_BACK_TO_BACK_IPG … #define HAFDUP_EXCESS_DEFER … #define HAFDUP_COLLISION_WINDOW … #define HAFDUP_RETRANSMISSION_MAX_SHIFT … #define HAFDUP_RETRANSMISSION_MAX … #define NUM_OF_HASH_REGS … #define PTV_PTE_MASK … #define PTV_PT_MASK … #define PTV_PTE_SHIFT … #define MAX_PACKET_ALIGNMENT … #define MAX_INTER_PACKET_GAP … #define MAX_RETRANSMISSION … #define MAX_COLLISION_WINDOW … /* Hash table size (32 bits*8 regs) */ #define DTSEC_HASH_TABLE_SIZE … /* Extended Hash table size (32 bits*16 regs) */ #define EXTENDED_HASH_TABLE_SIZE … /* dTSEC Memory Map registers */ struct dtsec_regs { … }; /* struct dtsec_cfg - dTSEC configuration * Transmit half-duplex flow control, under software control for 10/100-Mbps * half-duplex media. If set, back pressure is applied to media by raising * carrier. * halfdup_retransmit: * Number of retransmission attempts following a collision. * If this is exceeded dTSEC aborts transmission due to excessive collisions. * The standard specifies the attempt limit to be 15. * halfdup_coll_window: * The number of bytes of the frame during which collisions may occur. * The default value of 55 corresponds to the frame byte at the end of the * standard 512-bit slot time window. If collisions are detected after this * byte, the late collision event is asserted and transmission of current * frame is aborted. * tx_pad_crc: * Pad and append CRC. If set, the MAC pads all ransmitted short frames and * appends a CRC to every frame regardless of padding requirement. * tx_pause_time: * Transmit pause time value. This pause value is used as part of the pause * frame to be sent when a transmit pause frame is initiated. * If set to 0 this disables transmission of pause frames. * preamble_len: * Length, in bytes, of the preamble field preceding each Ethernet * start-of-frame delimiter byte. The default value of 0x7 should be used in * order to guarantee reliable operation with IEEE 802.3 compliant hardware. * rx_prepend: * Packet alignment padding length. The specified number of bytes (1-31) * of zero padding are inserted before the start of each received frame. * For Ethernet, where optional preamble extraction is enabled, the padding * appears before the preamble, otherwise the padding precedes the * layer 2 header. * * This structure contains basic dTSEC configuration and must be passed to * init() function. A default set of configuration values can be * obtained by calling set_dflts(). */ struct dtsec_cfg { … }; struct fman_mac { … }; static void set_dflts(struct dtsec_cfg *cfg) { … } static void set_mac_address(struct dtsec_regs __iomem *regs, const u8 *adr) { … } static int init(struct dtsec_regs __iomem *regs, struct dtsec_cfg *cfg, phy_interface_t iface, u16 iface_speed, u64 addr, u32 exception_mask, u8 tbi_addr) { … } static void set_bucket(struct dtsec_regs __iomem *regs, int bucket, bool enable) { … } static int check_init_parameters(struct fman_mac *dtsec) { … } static int get_exception_flag(enum fman_mac_exceptions exception) { … } static u16 dtsec_get_max_frame_length(struct fman_mac *dtsec) { … } static void dtsec_isr(void *handle) { … } static void dtsec_1588_isr(void *handle) { … } static void free_init_resources(struct fman_mac *dtsec) { … } static struct fman_mac *pcs_to_dtsec(struct phylink_pcs *pcs) { … } static void dtsec_pcs_get_state(struct phylink_pcs *pcs, struct phylink_link_state *state) { … } static int dtsec_pcs_config(struct phylink_pcs *pcs, unsigned int neg_mode, phy_interface_t interface, const unsigned long *advertising, bool permit_pause_to_mac) { … } static void dtsec_pcs_an_restart(struct phylink_pcs *pcs) { … } static const struct phylink_pcs_ops dtsec_pcs_ops = …; static void graceful_start(struct fman_mac *dtsec) { … } static void graceful_stop(struct fman_mac *dtsec) { … } static int dtsec_enable(struct fman_mac *dtsec) { … } static void dtsec_disable(struct fman_mac *dtsec) { … } static int dtsec_set_tx_pause_frames(struct fman_mac *dtsec, u8 __maybe_unused priority, u16 pause_time, u16 __maybe_unused thresh_time) { … } static int dtsec_accept_rx_pause_frames(struct fman_mac *dtsec, bool en) { … } static struct phylink_pcs *dtsec_select_pcs(struct phylink_config *config, phy_interface_t iface) { … } static void dtsec_mac_config(struct phylink_config *config, unsigned int mode, const struct phylink_link_state *state) { … } static void dtsec_link_up(struct phylink_config *config, struct phy_device *phy, unsigned int mode, phy_interface_t interface, int speed, int duplex, bool tx_pause, bool rx_pause) { … } static void dtsec_link_down(struct phylink_config *config, unsigned int mode, phy_interface_t interface) { … } static const struct phylink_mac_ops dtsec_mac_ops = …; static int dtsec_modify_mac_address(struct fman_mac *dtsec, const enet_addr_t *enet_addr) { … } static int dtsec_add_hash_mac_address(struct fman_mac *dtsec, enet_addr_t *eth_addr) { … } static int dtsec_set_allmulti(struct fman_mac *dtsec, bool enable) { … } static int dtsec_set_tstamp(struct fman_mac *dtsec, bool enable) { … } static int dtsec_del_hash_mac_address(struct fman_mac *dtsec, enet_addr_t *eth_addr) { … } static int dtsec_set_promiscuous(struct fman_mac *dtsec, bool new_val) { … } static int dtsec_set_exception(struct fman_mac *dtsec, enum fman_mac_exceptions exception, bool enable) { … } static int dtsec_init(struct fman_mac *dtsec) { … } static int dtsec_free(struct fman_mac *dtsec) { … } static struct fman_mac *dtsec_config(struct mac_device *mac_dev, struct fman_mac_params *params) { … } int dtsec_initialization(struct mac_device *mac_dev, struct device_node *mac_node, struct fman_mac_params *params) { … }
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