// SPDX-License-Identifier: GPL-2.0-or-later /* * PXA168 ethernet driver. * Most of the code is derived from mv643xx ethernet driver. * * Copyright (C) 2010 Marvell International Ltd. * Sachin Sanap <[email protected]> * Zhangfei Gao <[email protected]> * Philip Rakity <[email protected]> * Mark Brown <[email protected]> */ #include <linux/bitops.h> #include <linux/clk.h> #include <linux/delay.h> #include <linux/dma-mapping.h> #include <linux/etherdevice.h> #include <linux/ethtool.h> #include <linux/in.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/ip.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/of.h> #include <linux/of_net.h> #include <linux/phy.h> #include <linux/platform_device.h> #include <linux/pxa168_eth.h> #include <linux/tcp.h> #include <linux/types.h> #include <linux/udp.h> #include <linux/workqueue.h> #include <linux/pgtable.h> #include <asm/cacheflush.h> #define DRIVER_NAME … #define DRIVER_VERSION … /* * Registers */ #define PHY_ADDRESS … #define SMI … #define PORT_CONFIG … #define PORT_CONFIG_EXT … #define PORT_COMMAND … #define PORT_STATUS … #define HTPR … #define MAC_ADDR_LOW … #define MAC_ADDR_HIGH … #define SDMA_CONFIG … #define SDMA_CMD … #define INT_CAUSE … #define INT_W_CLEAR … #define INT_MASK … #define ETH_F_RX_DESC_0 … #define ETH_C_RX_DESC_0 … #define ETH_C_TX_DESC_1 … /* smi register */ #define SMI_BUSY … #define SMI_R_VALID … #define SMI_OP_W … #define SMI_OP_R … #define PHY_WAIT_ITERATIONS … #define PXA168_ETH_PHY_ADDR_DEFAULT … /* RX & TX descriptor command */ #define BUF_OWNED_BY_DMA … /* RX descriptor status */ #define RX_EN_INT … #define RX_FIRST_DESC … #define RX_LAST_DESC … #define RX_ERROR … /* TX descriptor command */ #define TX_EN_INT … #define TX_GEN_CRC … #define TX_ZERO_PADDING … #define TX_FIRST_DESC … #define TX_LAST_DESC … #define TX_ERROR … /* SDMA_CMD */ #define SDMA_CMD_AT … #define SDMA_CMD_TXDL … #define SDMA_CMD_TXDH … #define SDMA_CMD_AR … #define SDMA_CMD_ERD … /* Bit definitions of the Port Config Reg */ #define PCR_DUPLEX_FULL … #define PCR_HS … #define PCR_EN … #define PCR_PM … /* Bit definitions of the Port Config Extend Reg */ #define PCXR_2BSM … #define PCXR_DSCP_EN … #define PCXR_RMII_EN … #define PCXR_AN_SPEED_DIS … #define PCXR_SPEED_100 … #define PCXR_MFL_1518 … #define PCXR_MFL_1536 … #define PCXR_MFL_2048 … #define PCXR_MFL_64K … #define PCXR_FLOWCTL_DIS … #define PCXR_FLP … #define PCXR_AN_FLOWCTL_DIS … #define PCXR_AN_DUPLEX_DIS … #define PCXR_PRIO_TX_OFF … #define PCXR_TX_HIGH_PRI … /* Bit definitions of the SDMA Config Reg */ #define SDCR_BSZ_OFF … #define SDCR_BSZ8 … #define SDCR_BSZ4 … #define SDCR_BSZ2 … #define SDCR_BSZ1 … #define SDCR_BLMR … #define SDCR_BLMT … #define SDCR_RIFB … #define SDCR_RC_OFF … #define SDCR_RC_MAX_RETRANS … /* * Bit definitions of the Interrupt Cause Reg * and Interrupt MASK Reg is the same */ #define ICR_RXBUF … #define ICR_TXBUF_H … #define ICR_TXBUF_L … #define ICR_TXEND_H … #define ICR_TXEND_L … #define ICR_RXERR … #define ICR_TXERR_H … #define ICR_TXERR_L … #define ICR_TX_UDR … #define ICR_MII_CH … #define ALL_INTS … #define ETH_HW_IP_ALIGN … #define NUM_RX_DESCS … #define NUM_TX_DESCS … #define HASH_ADD … #define HASH_DELETE … #define HASH_ADDR_TABLE_SIZE … #define HOP_NUMBER … /* Bit definitions for Port status */ #define PORT_SPEED_100 … #define FULL_DUPLEX … #define FLOW_CONTROL_DISABLED … #define LINK_UP … /* Bit definitions for work to be done */ #define WORK_TX_DONE … /* * Misc definitions. */ #define SKB_DMA_REALIGN … struct rx_desc { … }; struct tx_desc { … }; struct pxa168_eth_private { … }; struct addr_table_entry { … }; /* Bit fields of a Hash Table Entry */ enum hash_table_entry { … }; static int pxa168_init_hw(struct pxa168_eth_private *pep); static int pxa168_init_phy(struct net_device *dev); static void eth_port_reset(struct net_device *dev); static void eth_port_start(struct net_device *dev); static int pxa168_eth_open(struct net_device *dev); static int pxa168_eth_stop(struct net_device *dev); static inline u32 rdl(struct pxa168_eth_private *pep, int offset) { … } static inline void wrl(struct pxa168_eth_private *pep, int offset, u32 data) { … } static void abort_dma(struct pxa168_eth_private *pep) { … } static void rxq_refill(struct net_device *dev) { … } static inline void rxq_refill_timer_wrapper(struct timer_list *t) { … } static inline u8 flip_8_bits(u8 x) { … } static void nibble_swap_every_byte(unsigned char *mac_addr) { … } static void inverse_every_nibble(unsigned char *mac_addr) { … } /* * ---------------------------------------------------------------------------- * This function will calculate the hash function of the address. * Inputs * mac_addr_orig - MAC address. * Outputs * return the calculated entry. */ static u32 hash_function(const unsigned char *mac_addr_orig) { … } /* * ---------------------------------------------------------------------------- * This function will add/del an entry to the address table. * Inputs * pep - ETHERNET . * mac_addr - MAC address. * skip - if 1, skip this address.Used in case of deleting an entry which is a * part of chain in the hash table.We can't just delete the entry since * that will break the chain.We need to defragment the tables time to * time. * rd - 0 Discard packet upon match. * - 1 Receive packet upon match. * Outputs * address table entry is added/deleted. * 0 if success. * -ENOSPC if table full */ static int add_del_hash_entry(struct pxa168_eth_private *pep, const unsigned char *mac_addr, u32 rd, u32 skip, int del) { … } /* * ---------------------------------------------------------------------------- * Create an addressTable entry from MAC address info * found in the specifed net_device struct * * Input : pointer to ethernet interface network device structure * Output : N/A */ static void update_hash_table_mac_address(struct pxa168_eth_private *pep, unsigned char *oaddr, const unsigned char *addr) { … } static int init_hash_table(struct pxa168_eth_private *pep) { … } static void pxa168_eth_set_rx_mode(struct net_device *dev) { … } static void pxa168_eth_get_mac_address(struct net_device *dev, unsigned char *addr) { … } static int pxa168_eth_set_mac_address(struct net_device *dev, void *addr) { … } static void eth_port_start(struct net_device *dev) { … } static void eth_port_reset(struct net_device *dev) { … } /* * txq_reclaim - Free the tx desc data for completed descriptors * If force is non-zero, frees uncompleted descriptors as well */ static int txq_reclaim(struct net_device *dev, int force) { … } static void pxa168_eth_tx_timeout(struct net_device *dev, unsigned int txqueue) { … } static void pxa168_eth_tx_timeout_task(struct work_struct *work) { … } static int rxq_process(struct net_device *dev, int budget) { … } static int pxa168_eth_collect_events(struct pxa168_eth_private *pep, struct net_device *dev) { … } static irqreturn_t pxa168_eth_int_handler(int irq, void *dev_id) { … } static void pxa168_eth_recalc_skb_size(struct pxa168_eth_private *pep) { … } static int set_port_config_ext(struct pxa168_eth_private *pep) { … } static void pxa168_eth_adjust_link(struct net_device *dev) { … } static int pxa168_init_phy(struct net_device *dev) { … } static int pxa168_init_hw(struct pxa168_eth_private *pep) { … } static int rxq_init(struct net_device *dev) { … } static void rxq_deinit(struct net_device *dev) { … } static int txq_init(struct net_device *dev) { … } static void txq_deinit(struct net_device *dev) { … } static int pxa168_eth_open(struct net_device *dev) { … } static int pxa168_eth_stop(struct net_device *dev) { … } static int pxa168_eth_change_mtu(struct net_device *dev, int mtu) { … } static int eth_alloc_tx_desc_index(struct pxa168_eth_private *pep) { … } static int pxa168_rx_poll(struct napi_struct *napi, int budget) { … } static netdev_tx_t pxa168_eth_start_xmit(struct sk_buff *skb, struct net_device *dev) { … } static int smi_wait_ready(struct pxa168_eth_private *pep) { … } static int pxa168_smi_read(struct mii_bus *bus, int phy_addr, int regnum) { … } static int pxa168_smi_write(struct mii_bus *bus, int phy_addr, int regnum, u16 value) { … } #ifdef CONFIG_NET_POLL_CONTROLLER static void pxa168_eth_netpoll(struct net_device *dev) { … } #endif static void pxa168_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) { … } static const struct ethtool_ops pxa168_ethtool_ops = …; static const struct net_device_ops pxa168_eth_netdev_ops = …; static int pxa168_eth_probe(struct platform_device *pdev) { … } static void pxa168_eth_remove(struct platform_device *pdev) { … } static void pxa168_eth_shutdown(struct platform_device *pdev) { … } #ifdef CONFIG_PM static int pxa168_eth_resume(struct platform_device *pdev) { … } static int pxa168_eth_suspend(struct platform_device *pdev, pm_message_t state) { … } #else #define pxa168_eth_resume … #define pxa168_eth_suspend … #endif static const struct of_device_id pxa168_eth_of_match[] = …; MODULE_DEVICE_TABLE(of, pxa168_eth_of_match); static struct platform_driver pxa168_eth_driver = …; module_platform_driver(…) …; MODULE_LICENSE(…) …; MODULE_DESCRIPTION(…) …; MODULE_ALIAS(…) …;
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