| /* 10G controller driver for Samsung SoCs |
| * |
| * Copyright (C) 2013 Samsung Electronics Co., Ltd. |
| * http://www.samsung.com |
| * |
| * Author: Siva Reddy Kallam <siva.kallam@samsung.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| #ifndef __SXGBE_COMMON_H__ |
| #define __SXGBE_COMMON_H__ |
| |
| /* forward references */ |
| struct sxgbe_desc_ops; |
| struct sxgbe_dma_ops; |
| struct sxgbe_mtl_ops; |
| |
| #define SXGBE_RESOURCE_NAME "sam_sxgbeeth" |
| #define DRV_MODULE_VERSION "November_2013" |
| |
| /* MAX HW feature words */ |
| #define SXGBE_HW_WORDS 3 |
| |
| #define SXGBE_RX_COE_NONE 0 |
| |
| /* CSR Frequency Access Defines*/ |
| #define SXGBE_CSR_F_150M 150000000 |
| #define SXGBE_CSR_F_250M 250000000 |
| #define SXGBE_CSR_F_300M 300000000 |
| #define SXGBE_CSR_F_350M 350000000 |
| #define SXGBE_CSR_F_400M 400000000 |
| #define SXGBE_CSR_F_500M 500000000 |
| |
| /* pause time */ |
| #define SXGBE_PAUSE_TIME 0x200 |
| |
| /* tx queues */ |
| #define SXGBE_TX_QUEUES 8 |
| #define SXGBE_RX_QUEUES 16 |
| |
| /* Calculated based how much time does it take to fill 256KB Rx memory |
| * at 10Gb speed at 156MHz clock rate and considered little less then |
| * the actual value. |
| */ |
| #define SXGBE_MAX_DMA_RIWT 0x70 |
| #define SXGBE_MIN_DMA_RIWT 0x01 |
| |
| /* Tx coalesce parameters */ |
| #define SXGBE_COAL_TX_TIMER 40000 |
| #define SXGBE_MAX_COAL_TX_TICK 100000 |
| #define SXGBE_TX_MAX_FRAMES 512 |
| #define SXGBE_TX_FRAMES 128 |
| |
| /* SXGBE TX FIFO is 8K, Rx FIFO is 16K */ |
| #define BUF_SIZE_16KiB 16384 |
| #define BUF_SIZE_8KiB 8192 |
| #define BUF_SIZE_4KiB 4096 |
| #define BUF_SIZE_2KiB 2048 |
| |
| #define SXGBE_DEFAULT_LIT_LS 0x3E8 |
| #define SXGBE_DEFAULT_TWT_LS 0x0 |
| |
| /* Flow Control defines */ |
| #define SXGBE_FLOW_OFF 0 |
| #define SXGBE_FLOW_RX 1 |
| #define SXGBE_FLOW_TX 2 |
| #define SXGBE_FLOW_AUTO (SXGBE_FLOW_TX | SXGBE_FLOW_RX) |
| |
| #define SF_DMA_MODE 1 /* DMA STORE-AND-FORWARD Operation Mode */ |
| |
| /* errors */ |
| #define RX_GMII_ERR 0x01 |
| #define RX_WATCHDOG_ERR 0x02 |
| #define RX_CRC_ERR 0x03 |
| #define RX_GAINT_ERR 0x04 |
| #define RX_IP_HDR_ERR 0x05 |
| #define RX_PAYLOAD_ERR 0x06 |
| #define RX_OVERFLOW_ERR 0x07 |
| |
| /* pkt type */ |
| #define RX_LEN_PKT 0x00 |
| #define RX_MACCTL_PKT 0x01 |
| #define RX_DCBCTL_PKT 0x02 |
| #define RX_ARP_PKT 0x03 |
| #define RX_OAM_PKT 0x04 |
| #define RX_UNTAG_PKT 0x05 |
| #define RX_OTHER_PKT 0x07 |
| #define RX_SVLAN_PKT 0x08 |
| #define RX_CVLAN_PKT 0x09 |
| #define RX_DVLAN_OCVLAN_ICVLAN_PKT 0x0A |
| #define RX_DVLAN_OSVLAN_ISVLAN_PKT 0x0B |
| #define RX_DVLAN_OSVLAN_ICVLAN_PKT 0x0C |
| #define RX_DVLAN_OCVLAN_ISVLAN_PKT 0x0D |
| |
| #define RX_NOT_IP_PKT 0x00 |
| #define RX_IPV4_TCP_PKT 0x01 |
| #define RX_IPV4_UDP_PKT 0x02 |
| #define RX_IPV4_ICMP_PKT 0x03 |
| #define RX_IPV4_UNKNOWN_PKT 0x07 |
| #define RX_IPV6_TCP_PKT 0x09 |
| #define RX_IPV6_UDP_PKT 0x0A |
| #define RX_IPV6_ICMP_PKT 0x0B |
| #define RX_IPV6_UNKNOWN_PKT 0x0F |
| |
| #define RX_NO_PTP 0x00 |
| #define RX_PTP_SYNC 0x01 |
| #define RX_PTP_FOLLOW_UP 0x02 |
| #define RX_PTP_DELAY_REQ 0x03 |
| #define RX_PTP_DELAY_RESP 0x04 |
| #define RX_PTP_PDELAY_REQ 0x05 |
| #define RX_PTP_PDELAY_RESP 0x06 |
| #define RX_PTP_PDELAY_FOLLOW_UP 0x07 |
| #define RX_PTP_ANNOUNCE 0x08 |
| #define RX_PTP_MGMT 0x09 |
| #define RX_PTP_SIGNAL 0x0A |
| #define RX_PTP_RESV_MSG 0x0F |
| |
| /* EEE-LPI mode flags*/ |
| #define TX_ENTRY_LPI_MODE 0x10 |
| #define TX_EXIT_LPI_MODE 0x20 |
| #define RX_ENTRY_LPI_MODE 0x40 |
| #define RX_EXIT_LPI_MODE 0x80 |
| |
| /* EEE-LPI Interrupt status flag */ |
| #define LPI_INT_STATUS BIT(5) |
| |
| /* EEE-LPI Default timer values */ |
| #define LPI_LINK_STATUS_TIMER 0x3E8 |
| #define LPI_MAC_WAIT_TIMER 0x00 |
| |
| /* EEE-LPI Control and status definitions */ |
| #define LPI_CTRL_STATUS_TXA BIT(19) |
| #define LPI_CTRL_STATUS_PLSDIS BIT(18) |
| #define LPI_CTRL_STATUS_PLS BIT(17) |
| #define LPI_CTRL_STATUS_LPIEN BIT(16) |
| #define LPI_CTRL_STATUS_TXRSTP BIT(11) |
| #define LPI_CTRL_STATUS_RXRSTP BIT(10) |
| #define LPI_CTRL_STATUS_RLPIST BIT(9) |
| #define LPI_CTRL_STATUS_TLPIST BIT(8) |
| #define LPI_CTRL_STATUS_RLPIEX BIT(3) |
| #define LPI_CTRL_STATUS_RLPIEN BIT(2) |
| #define LPI_CTRL_STATUS_TLPIEX BIT(1) |
| #define LPI_CTRL_STATUS_TLPIEN BIT(0) |
| |
| enum dma_irq_status { |
| tx_hard_error = BIT(0), |
| tx_bump_tc = BIT(1), |
| handle_tx = BIT(2), |
| rx_hard_error = BIT(3), |
| rx_bump_tc = BIT(4), |
| handle_rx = BIT(5), |
| }; |
| |
| #define NETIF_F_HW_VLAN_ALL (NETIF_F_HW_VLAN_CTAG_RX | \ |
| NETIF_F_HW_VLAN_STAG_RX | \ |
| NETIF_F_HW_VLAN_CTAG_TX | \ |
| NETIF_F_HW_VLAN_STAG_TX | \ |
| NETIF_F_HW_VLAN_CTAG_FILTER | \ |
| NETIF_F_HW_VLAN_STAG_FILTER) |
| |
| /* MMC control defines */ |
| #define SXGBE_MMC_CTRL_CNT_FRZ 0x00000008 |
| |
| /* SXGBE HW ADDR regs */ |
| #define SXGBE_ADDR_HIGH(reg) (((reg > 15) ? 0x00000800 : 0x00000040) + \ |
| (reg * 8)) |
| #define SXGBE_ADDR_LOW(reg) (((reg > 15) ? 0x00000804 : 0x00000044) + \ |
| (reg * 8)) |
| #define SXGBE_MAX_PERFECT_ADDRESSES 32 /* Maximum unicast perfect filtering */ |
| #define SXGBE_FRAME_FILTER 0x00000004 /* Frame Filter */ |
| |
| /* SXGBE Frame Filter defines */ |
| #define SXGBE_FRAME_FILTER_PR 0x00000001 /* Promiscuous Mode */ |
| #define SXGBE_FRAME_FILTER_HUC 0x00000002 /* Hash Unicast */ |
| #define SXGBE_FRAME_FILTER_HMC 0x00000004 /* Hash Multicast */ |
| #define SXGBE_FRAME_FILTER_DAIF 0x00000008 /* DA Inverse Filtering */ |
| #define SXGBE_FRAME_FILTER_PM 0x00000010 /* Pass all multicast */ |
| #define SXGBE_FRAME_FILTER_DBF 0x00000020 /* Disable Broadcast frames */ |
| #define SXGBE_FRAME_FILTER_SAIF 0x00000100 /* Inverse Filtering */ |
| #define SXGBE_FRAME_FILTER_SAF 0x00000200 /* Source Address Filter */ |
| #define SXGBE_FRAME_FILTER_HPF 0x00000400 /* Hash or perfect Filter */ |
| #define SXGBE_FRAME_FILTER_RA 0x80000000 /* Receive all mode */ |
| |
| #define SXGBE_HASH_TABLE_SIZE 64 |
| #define SXGBE_HASH_HIGH 0x00000008 /* Multicast Hash Table High */ |
| #define SXGBE_HASH_LOW 0x0000000c /* Multicast Hash Table Low */ |
| |
| #define SXGBE_HI_REG_AE 0x80000000 |
| |
| /* Minimum and maximum MTU */ |
| #define MIN_MTU 68 |
| #define MAX_MTU 9000 |
| |
| #define SXGBE_FOR_EACH_QUEUE(max_queues, queue_num) \ |
| for (queue_num = 0; queue_num < max_queues; queue_num++) |
| |
| #define DRV_VERSION "1.0.0" |
| |
| #define SXGBE_MAX_RX_CHANNELS 16 |
| #define SXGBE_MAX_TX_CHANNELS 16 |
| |
| #define START_MAC_REG_OFFSET 0x0000 |
| #define MAX_MAC_REG_OFFSET 0x0DFC |
| #define START_MTL_REG_OFFSET 0x1000 |
| #define MAX_MTL_REG_OFFSET 0x18FC |
| #define START_DMA_REG_OFFSET 0x3000 |
| #define MAX_DMA_REG_OFFSET 0x38FC |
| |
| #define REG_SPACE_SIZE 0x2000 |
| |
| /* sxgbe statistics counters */ |
| struct sxgbe_extra_stats { |
| /* TX/RX IRQ events */ |
| unsigned long tx_underflow_irq; |
| unsigned long tx_process_stopped_irq; |
| unsigned long tx_ctxt_desc_err; |
| unsigned long tx_threshold; |
| unsigned long rx_threshold; |
| unsigned long tx_pkt_n; |
| unsigned long rx_pkt_n; |
| unsigned long normal_irq_n; |
| unsigned long tx_normal_irq_n; |
| unsigned long rx_normal_irq_n; |
| unsigned long napi_poll; |
| unsigned long tx_clean; |
| unsigned long tx_reset_ic_bit; |
| unsigned long rx_process_stopped_irq; |
| unsigned long rx_underflow_irq; |
| |
| /* Bus access errors */ |
| unsigned long fatal_bus_error_irq; |
| unsigned long tx_read_transfer_err; |
| unsigned long tx_write_transfer_err; |
| unsigned long tx_desc_access_err; |
| unsigned long tx_buffer_access_err; |
| unsigned long tx_data_transfer_err; |
| unsigned long rx_read_transfer_err; |
| unsigned long rx_write_transfer_err; |
| unsigned long rx_desc_access_err; |
| unsigned long rx_buffer_access_err; |
| unsigned long rx_data_transfer_err; |
| |
| /* EEE-LPI stats */ |
| unsigned long tx_lpi_entry_n; |
| unsigned long tx_lpi_exit_n; |
| unsigned long rx_lpi_entry_n; |
| unsigned long rx_lpi_exit_n; |
| unsigned long eee_wakeup_error_n; |
| |
| /* RX specific */ |
| /* L2 error */ |
| unsigned long rx_code_gmii_err; |
| unsigned long rx_watchdog_err; |
| unsigned long rx_crc_err; |
| unsigned long rx_gaint_pkt_err; |
| unsigned long ip_hdr_err; |
| unsigned long ip_payload_err; |
| unsigned long overflow_error; |
| |
| /* L2 Pkt type */ |
| unsigned long len_pkt; |
| unsigned long mac_ctl_pkt; |
| unsigned long dcb_ctl_pkt; |
| unsigned long arp_pkt; |
| unsigned long oam_pkt; |
| unsigned long untag_okt; |
| unsigned long other_pkt; |
| unsigned long svlan_tag_pkt; |
| unsigned long cvlan_tag_pkt; |
| unsigned long dvlan_ocvlan_icvlan_pkt; |
| unsigned long dvlan_osvlan_isvlan_pkt; |
| unsigned long dvlan_osvlan_icvlan_pkt; |
| unsigned long dvan_ocvlan_icvlan_pkt; |
| |
| /* L3/L4 Pkt type */ |
| unsigned long not_ip_pkt; |
| unsigned long ip4_tcp_pkt; |
| unsigned long ip4_udp_pkt; |
| unsigned long ip4_icmp_pkt; |
| unsigned long ip4_unknown_pkt; |
| unsigned long ip6_tcp_pkt; |
| unsigned long ip6_udp_pkt; |
| unsigned long ip6_icmp_pkt; |
| unsigned long ip6_unknown_pkt; |
| |
| /* Filter specific */ |
| unsigned long vlan_filter_match; |
| unsigned long sa_filter_fail; |
| unsigned long da_filter_fail; |
| unsigned long hash_filter_pass; |
| unsigned long l3_filter_match; |
| unsigned long l4_filter_match; |
| |
| /* RX context specific */ |
| unsigned long timestamp_dropped; |
| unsigned long rx_msg_type_no_ptp; |
| unsigned long rx_ptp_type_sync; |
| unsigned long rx_ptp_type_follow_up; |
| unsigned long rx_ptp_type_delay_req; |
| unsigned long rx_ptp_type_delay_resp; |
| unsigned long rx_ptp_type_pdelay_req; |
| unsigned long rx_ptp_type_pdelay_resp; |
| unsigned long rx_ptp_type_pdelay_follow_up; |
| unsigned long rx_ptp_announce; |
| unsigned long rx_ptp_mgmt; |
| unsigned long rx_ptp_signal; |
| unsigned long rx_ptp_resv_msg_type; |
| }; |
| |
| struct mac_link { |
| int port; |
| int duplex; |
| int speed; |
| }; |
| |
| struct mii_regs { |
| unsigned int addr; /* MII Address */ |
| unsigned int data; /* MII Data */ |
| }; |
| |
| struct sxgbe_core_ops { |
| /* MAC core initialization */ |
| void (*core_init)(void __iomem *ioaddr); |
| /* Dump MAC registers */ |
| void (*dump_regs)(void __iomem *ioaddr); |
| /* Handle extra events on specific interrupts hw dependent */ |
| int (*host_irq_status)(void __iomem *ioaddr, |
| struct sxgbe_extra_stats *x); |
| /* Set power management mode (e.g. magic frame) */ |
| void (*pmt)(void __iomem *ioaddr, unsigned long mode); |
| /* Set/Get Unicast MAC addresses */ |
| void (*set_umac_addr)(void __iomem *ioaddr, unsigned char *addr, |
| unsigned int reg_n); |
| void (*get_umac_addr)(void __iomem *ioaddr, unsigned char *addr, |
| unsigned int reg_n); |
| void (*enable_rx)(void __iomem *ioaddr, bool enable); |
| void (*enable_tx)(void __iomem *ioaddr, bool enable); |
| |
| /* controller version specific operations */ |
| int (*get_controller_version)(void __iomem *ioaddr); |
| |
| /* If supported then get the optional core features */ |
| unsigned int (*get_hw_feature)(void __iomem *ioaddr, |
| unsigned char feature_index); |
| /* adjust SXGBE speed */ |
| void (*set_speed)(void __iomem *ioaddr, unsigned char speed); |
| |
| /* EEE-LPI specific operations */ |
| void (*set_eee_mode)(void __iomem *ioaddr); |
| void (*reset_eee_mode)(void __iomem *ioaddr); |
| void (*set_eee_timer)(void __iomem *ioaddr, const int ls, |
| const int tw); |
| void (*set_eee_pls)(void __iomem *ioaddr, const int link); |
| |
| /* Enable disable checksum offload operations */ |
| void (*enable_rx_csum)(void __iomem *ioaddr); |
| void (*disable_rx_csum)(void __iomem *ioaddr); |
| void (*enable_rxqueue)(void __iomem *ioaddr, int queue_num); |
| void (*disable_rxqueue)(void __iomem *ioaddr, int queue_num); |
| }; |
| |
| const struct sxgbe_core_ops *sxgbe_get_core_ops(void); |
| |
| struct sxgbe_ops { |
| const struct sxgbe_core_ops *mac; |
| const struct sxgbe_desc_ops *desc; |
| const struct sxgbe_dma_ops *dma; |
| const struct sxgbe_mtl_ops *mtl; |
| struct mii_regs mii; /* MII register Addresses */ |
| struct mac_link link; |
| unsigned int ctrl_uid; |
| unsigned int ctrl_id; |
| }; |
| |
| /* SXGBE private data structures */ |
| struct sxgbe_tx_queue { |
| unsigned int irq_no; |
| struct sxgbe_priv_data *priv_ptr; |
| struct sxgbe_tx_norm_desc *dma_tx; |
| dma_addr_t dma_tx_phy; |
| dma_addr_t *tx_skbuff_dma; |
| struct sk_buff **tx_skbuff; |
| struct timer_list txtimer; |
| spinlock_t tx_lock; /* lock for tx queues */ |
| unsigned int cur_tx; |
| unsigned int dirty_tx; |
| u32 tx_count_frames; |
| u32 tx_coal_frames; |
| u32 tx_coal_timer; |
| int hwts_tx_en; |
| u16 prev_mss; |
| u8 queue_no; |
| }; |
| |
| struct sxgbe_rx_queue { |
| struct sxgbe_priv_data *priv_ptr; |
| struct sxgbe_rx_norm_desc *dma_rx; |
| struct sk_buff **rx_skbuff; |
| unsigned int cur_rx; |
| unsigned int dirty_rx; |
| unsigned int irq_no; |
| u32 rx_riwt; |
| dma_addr_t *rx_skbuff_dma; |
| dma_addr_t dma_rx_phy; |
| u8 queue_no; |
| }; |
| |
| /* SXGBE HW capabilities */ |
| struct sxgbe_hw_features { |
| /****** CAP [0] *******/ |
| unsigned int pmt_remote_wake_up; |
| unsigned int pmt_magic_frame; |
| /* IEEE 1588-2008 */ |
| unsigned int atime_stamp; |
| |
| unsigned int eee; |
| |
| unsigned int tx_csum_offload; |
| unsigned int rx_csum_offload; |
| unsigned int multi_macaddr; |
| unsigned int tstamp_srcselect; |
| unsigned int sa_vlan_insert; |
| |
| /****** CAP [1] *******/ |
| unsigned int rxfifo_size; |
| unsigned int txfifo_size; |
| unsigned int atstmap_hword; |
| unsigned int dcb_enable; |
| unsigned int splithead_enable; |
| unsigned int tcpseg_offload; |
| unsigned int debug_mem; |
| unsigned int rss_enable; |
| unsigned int hash_tsize; |
| unsigned int l3l4_filer_size; |
| |
| /* This value is in bytes and |
| * as mentioned in HW features |
| * of SXGBE data book |
| */ |
| unsigned int rx_mtl_qsize; |
| unsigned int tx_mtl_qsize; |
| |
| /****** CAP [2] *******/ |
| /* TX and RX number of channels */ |
| unsigned int rx_mtl_queues; |
| unsigned int tx_mtl_queues; |
| unsigned int rx_dma_channels; |
| unsigned int tx_dma_channels; |
| unsigned int pps_output_count; |
| unsigned int aux_input_count; |
| }; |
| |
| struct sxgbe_priv_data { |
| /* DMA descriptos */ |
| struct sxgbe_tx_queue *txq[SXGBE_TX_QUEUES]; |
| struct sxgbe_rx_queue *rxq[SXGBE_RX_QUEUES]; |
| u8 cur_rx_qnum; |
| |
| unsigned int dma_tx_size; |
| unsigned int dma_rx_size; |
| unsigned int dma_buf_sz; |
| u32 rx_riwt; |
| |
| struct napi_struct napi; |
| |
| void __iomem *ioaddr; |
| struct net_device *dev; |
| struct device *device; |
| struct sxgbe_ops *hw; /* sxgbe specific ops */ |
| int no_csum_insertion; |
| int irq; |
| int rxcsum_insertion; |
| spinlock_t stats_lock; /* lock for tx/rx statatics */ |
| |
| int oldlink; |
| int speed; |
| int oldduplex; |
| struct mii_bus *mii; |
| int mii_irq[PHY_MAX_ADDR]; |
| u8 rx_pause; |
| u8 tx_pause; |
| |
| struct sxgbe_extra_stats xstats; |
| struct sxgbe_plat_data *plat; |
| struct sxgbe_hw_features hw_cap; |
| |
| u32 msg_enable; |
| |
| struct clk *sxgbe_clk; |
| int clk_csr; |
| unsigned int mode; |
| unsigned int default_addend; |
| |
| /* advanced time stamp support */ |
| u32 adv_ts; |
| int use_riwt; |
| struct ptp_clock *ptp_clock; |
| |
| /* tc control */ |
| int tx_tc; |
| int rx_tc; |
| /* EEE-LPI specific members */ |
| struct timer_list eee_ctrl_timer; |
| bool tx_path_in_lpi_mode; |
| int lpi_irq; |
| int eee_enabled; |
| int eee_active; |
| int tx_lpi_timer; |
| }; |
| |
| /* Function prototypes */ |
| struct sxgbe_priv_data *sxgbe_drv_probe(struct device *device, |
| struct sxgbe_plat_data *plat_dat, |
| void __iomem *addr); |
| int sxgbe_drv_remove(struct net_device *ndev); |
| void sxgbe_set_ethtool_ops(struct net_device *netdev); |
| int sxgbe_mdio_unregister(struct net_device *ndev); |
| int sxgbe_mdio_register(struct net_device *ndev); |
| int sxgbe_register_platform(void); |
| void sxgbe_unregister_platform(void); |
| |
| #ifdef CONFIG_PM |
| int sxgbe_suspend(struct net_device *ndev); |
| int sxgbe_resume(struct net_device *ndev); |
| int sxgbe_freeze(struct net_device *ndev); |
| int sxgbe_restore(struct net_device *ndev); |
| #endif /* CONFIG_PM */ |
| |
| const struct sxgbe_mtl_ops *sxgbe_get_mtl_ops(void); |
| |
| void sxgbe_disable_eee_mode(struct sxgbe_priv_data * const priv); |
| bool sxgbe_eee_init(struct sxgbe_priv_data * const priv); |
| #endif /* __SXGBE_COMMON_H__ */ |
