new file mode 100644
@@ -0,0 +1,39 @@
+* Samsung 10G Ethernet driver (SXGBE)
+
+Required properties:
+- compatible: Should be "samsung,sxgbe-v2.0a"
+- reg: Address and length of the register set for the device
+- interrupt-parent: Should be the phandle for the interrupt controller
+ that services interrupts for this device
+- interrupts: Should contain the SXGBE interrupts
+- phy-mode: String, operation mode of the PHY interface.
+ Supported values are: "xaui", "gmii".
+- samsung,pbl Programmable Burst Length
+- samsung,burst-map Program the possible bursts supported by sxgbe
+- samsung,fixed-burst Program the DMA to use the fixed burst mode
+- samsung,adv-addr-mode program the DMA to use Enhanced address mode
+- samsung,force_thresh_dma_mode Force DMA to use the threshold mode for
+ both tx and rx
+- samsung,force_sf_dma_mode Force DMA to use the Store and Forward
+ mode for both tx and rx. This flag is
+ ignored if force_thresh_dma_mode is set.
+
+Optional properties:
+- mac-address: 6 bytes, mac address
+
+Examples:
+
+ sxgbe0: ethernet@1a040000 {
+ compatible = "samsung,sxgbe-v2.0a";
+ reg = <1a040000 0x10000>;
+ interrupt-parent = <&gic>;
+ interrupts = <0 209 4>, <0 185 4>, <0 186 4>, <0 187 4>,
+ <0 188 4>, <0 189 4>, <0 190 4>, <0 191 4>,
+ <0 192 4>, <0 193 4>, <0 194 4>, <0 195 4>,
+ <0 196 4>, <0 197 4>, <0 198 4>, <0 199 4>,
+ <0 200 4>, <0 201 4>, <0 202 4>, <0 203 4>,
+ <0 204 4>, <0 205 4>, <0 206 4>, <0 207 4>,
+ <0 208 4>, <0 211 4>;
+ mac-address = [000000000000]; /* Filled in by U-Boot */
+ phy-mode = "xaui";
+ };
@@ -149,6 +149,7 @@ config S6GMAC
To compile this driver as a module, choose M here. The module
will be called s6gmac.
+source "drivers/net/ethernet/samsung/Kconfig"
source "drivers/net/ethernet/seeq/Kconfig"
source "drivers/net/ethernet/silan/Kconfig"
source "drivers/net/ethernet/sis/Kconfig"
@@ -60,6 +60,7 @@ obj-$(CONFIG_NET_VENDOR_REALTEK) += realtek/
obj-$(CONFIG_SH_ETH) += renesas/
obj-$(CONFIG_NET_VENDOR_RDC) += rdc/
obj-$(CONFIG_S6GMAC) += s6gmac.o
+obj-$(CONFIG_NET_SAMSUNG_SXGBE) += samsung/
obj-$(CONFIG_NET_VENDOR_SEEQ) += seeq/
obj-$(CONFIG_NET_VENDOR_SILAN) += silan/
obj-$(CONFIG_NET_VENDOR_SIS) += sis/
new file mode 100644
@@ -0,0 +1,7 @@
+config NET_SAMSUNG_SXGBE
+ tristate "Samsung 10G/2.5G/1G SXGBE Ethernet driver"
+ depends on HAS_IOMEM && HAS_DMA
+ select CRC32
+ help
+ This is the driver for the SXGBE 10G Ethernet IP block found on Samsung
+ platforms.
new file mode 100644
@@ -0,0 +1,4 @@
+obj-$(CONFIG_NET_SAMSUNG_SXGBE) += samsung-sxgbe.o
+samsung-sxgbe-objs:= sxgbe_platform.o sxgbe_main.o sxgbe_desc.o \
+ sxgbe_dma.o sxgbe_core.o sxgbe_mtl.o sxgbe_mdio.o \
+ sxgbe_ethtool.o sxgbe_xpcs.o $(samsung-sxgbe-y)
new file mode 100644
@@ -0,0 +1,472 @@
+/* 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
+
+/* Max/Min RI Watchdog Timer count value */
+#define SXGBE_MAX_DMA_RIWT 0xff
+#define SXGBE_MIN_DMA_RIWT 0x20
+
+/* 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
+
+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++)
+
+/* 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;
+
+ /* 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 sxgbe_hwtimestamp {
+ void (*config_hw_tstamping)(void __iomem *ioaddr, u32 data);
+ void (*config_sub_second_increment)(void __iomem *ioaddr);
+ int (*init_systime)(void __iomem *ioaddr, u32 sec, u32 nsec);
+ int (*config_addend)(void __iomem *ioaddr, u32 addend);
+ int (*adjust_systime)(void __iomem *ioaddr, u32 sec, u32 nsec,
+ int add_sub);
+ u64 (*get_systime)(void __iomem *ioaddr);
+};
+
+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);
+};
+
+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;
+ const struct sxgbe_hwtimestamp *ptp;
+ 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 {
+ u8 queue_no;
+ 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;
+ spinlock_t tx_lock;
+ unsigned int cur_tx;
+ unsigned int dirty_tx;
+ u32 tx_count_frames;
+ u32 tx_coal_frames;
+ u32 tx_coal_timer;
+ int hwts_tx_en;
+ struct timer_list txtimer;
+};
+
+struct sxgbe_rx_queue {
+ u8 queue_no;
+ unsigned int irq_no;
+ 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;
+ u32 rx_riwt;
+ dma_addr_t *rx_skbuff_dma;
+ dma_addr_t dma_rx_phy;
+};
+
+/* SXGBE HW capabilities */
+struct sxgbe_hw_features {
+ /****** CAP [0] *******/
+ unsigned int gmii_1000mbps;
+ unsigned int vlan_hfilter;
+ unsigned int sma_mdio;
+ unsigned int pmt_remote_wake_up;
+ unsigned int pmt_magic_frame;
+ unsigned int rmon;
+ unsigned int arp_offload;
+ /* IEEE 1588-2008 */
+ unsigned int atime_stamp;
+
+ 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;
+ spinlock_t lock;
+ spinlock_t stats_lock;
+
+ struct phy_device *phydev;
+ int oldlink;
+ int speed;
+ int oldduplex;
+ unsigned int flow_ctrl;
+ unsigned int pause;
+ struct mii_bus *mii;
+ int mii_irq[PHY_MAX_ADDR];
+
+ 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;
+ spinlock_t ptp_lock;
+};
+
+/* Function prototypes */
+struct sxgbe_priv_data *sxgbe_dvr_probe(struct device *device,
+ struct sxgbe_plat_data *plat_dat,
+ void __iomem *addr);
+int sxgbe_dvr_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);
+
+#endif /* __SXGBE_COMMON_H__ */
new file mode 100644
@@ -0,0 +1,157 @@
+/* 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.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/export.h>
+#include <linux/io.h>
+#include <linux/netdevice.h>
+#include <linux/phy.h>
+
+#include "sxgbe_common.h"
+#include "sxgbe_reg.h"
+
+/* MAC core initialization */
+static void sxgbe_core_init(void __iomem *ioaddr)
+{
+ u32 regval;
+ /* TX configuration */
+ regval = readl(ioaddr + SXGBE_CORE_TX_CONFIG_REG);
+ /* Other configurable parameters IFP, IPG, ISR, ISM
+ * needs to be set if needed
+ */
+ regval |= SXGBE_TX_JABBER_DISABLE;
+ writel(regval, ioaddr + SXGBE_CORE_TX_CONFIG_REG);
+
+ /* RX configuration */
+ regval = readl(ioaddr + SXGBE_CORE_RX_CONFIG_REG);
+ /* Other configurable parameters CST, SPEN, USP, GPSLCE
+ * WD, LM, S2KP, HDSMS, GPSL, ELEN, ARPEN needs to be
+ * set if needed
+ */
+ regval |= SXGBE_RX_JUMBPKT_ENABLE | SXGBE_RX_ACS_ENABLE;
+ writel(regval, ioaddr + SXGBE_CORE_RX_CONFIG_REG);
+}
+
+/* Dump MAC registers */
+static void sxgbe_core_dump_regs(void __iomem *ioaddr)
+{
+}
+
+/* Handle extra events on specific interrupts hw dependent */
+static int sxgbe_core_host_irq_status(void __iomem *ioaddr,
+ struct sxgbe_extra_stats *x)
+{
+ return 0;
+}
+
+/* Set power management mode (e.g. magic frame) */
+static void sxgbe_core_pmt(void __iomem *ioaddr, unsigned long mode)
+{
+}
+
+/* Set/Get Unicast MAC addresses */
+static void sxgbe_core_set_umac_addr(void __iomem *ioaddr, unsigned char *addr,
+ unsigned int reg_n)
+{
+ u32 high_word, low_word;
+
+ high_word = (addr[5] << 8) || (addr[4]);
+ low_word = ((addr[3] << 24) || (addr[2] << 16) ||
+ (addr[1] << 8) || (addr[0]));
+ writel(high_word, ioaddr + SXGBE_CORE_ADD_HIGHOFFSET(reg_n));
+ writel(low_word, ioaddr + SXGBE_CORE_ADD_LOWOFFSET(reg_n));
+}
+
+static void sxgbe_core_get_umac_addr(void __iomem *ioaddr, unsigned char *addr,
+ unsigned int reg_n)
+{
+ u32 high_word, low_word;
+
+ high_word = readl(ioaddr + SXGBE_CORE_ADD_HIGHOFFSET(reg_n));
+ low_word = readl(ioaddr + SXGBE_CORE_ADD_LOWOFFSET(reg_n));
+
+ /* extract and assign address */
+ addr[5] = (high_word & 0x0000FF00) >> 8;
+ addr[4] = (high_word & 0x000000FF);
+ addr[3] = (low_word & 0xFF000000) >> 24;
+ addr[2] = (low_word & 0x00FF0000) >> 16;
+ addr[1] = (low_word & 0x0000FF00) >> 8;
+ addr[0] = (low_word & 0x000000FF);
+}
+
+static void sxgbe_enable_tx(void __iomem *ioaddr, bool enable)
+{
+ u32 tx_config;
+
+ tx_config = readl(ioaddr + SXGBE_CORE_TX_CONFIG_REG);
+ tx_config &= ~SXGBE_TX_ENABLE;
+
+ if (enable)
+ tx_config |= SXGBE_TX_ENABLE;
+ writel(tx_config, ioaddr + SXGBE_CORE_TX_CONFIG_REG);
+}
+
+static void sxgbe_enable_rx(void __iomem *ioaddr, bool enable)
+{
+ u32 rx_config;
+
+ rx_config = readl(ioaddr + SXGBE_CORE_RX_CONFIG_REG);
+ rx_config &= ~SXGBE_RX_ENABLE;
+
+ if (enable)
+ rx_config |= SXGBE_RX_ENABLE;
+ writel(rx_config, ioaddr + SXGBE_CORE_RX_CONFIG_REG);
+}
+
+static int sxgbe_get_controller_version(void __iomem *ioaddr)
+{
+ return readl(ioaddr + SXGBE_CORE_VERSION_REG);
+}
+
+/* If supported then get the optional core features */
+static unsigned int sxgbe_get_hw_feature(void __iomem *ioaddr,
+ unsigned char feature_index)
+{
+ return readl(ioaddr + (SXGBE_CORE_HW_FEA_REG(feature_index)));
+}
+
+static void sxgbe_core_set_speed(void __iomem *ioaddr, unsigned char speed)
+{
+ u32 tx_cfg = readl(ioaddr + SXGBE_CORE_TX_CONFIG_REG);
+
+ /* clear the speed bits */
+ tx_cfg &= ~0x60000000;
+ tx_cfg |= (speed << SXGBE_SPEED_LSHIFT);
+
+ /* set the speed */
+ writel(tx_cfg, ioaddr + SXGBE_CORE_TX_CONFIG_REG);
+}
+
+const struct sxgbe_core_ops core_ops = {
+ .core_init = sxgbe_core_init,
+ .dump_regs = sxgbe_core_dump_regs,
+ .host_irq_status = sxgbe_core_host_irq_status,
+ .pmt = sxgbe_core_pmt,
+ .set_umac_addr = sxgbe_core_set_umac_addr,
+ .get_umac_addr = sxgbe_core_get_umac_addr,
+ .enable_rx = sxgbe_enable_rx,
+ .enable_tx = sxgbe_enable_tx,
+ .get_controller_version = sxgbe_get_controller_version,
+ .get_hw_feature = sxgbe_get_hw_feature,
+ .set_speed = sxgbe_core_set_speed,
+};
+
+const struct sxgbe_core_ops *sxgbe_get_core_ops(void)
+{
+ return &core_ops;
+}
new file mode 100644
@@ -0,0 +1,468 @@
+/* 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.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/bitops.h>
+#include <linux/export.h>
+#include <linux/io.h>
+#include <linux/netdevice.h>
+#include <linux/phy.h>
+
+#include "sxgbe_common.h"
+#include "sxgbe_dma.h"
+#include "sxgbe_desc.h"
+
+/* DMA TX descriptor ring initialization */
+static void sxgbe_init_tx_desc(struct sxgbe_tx_norm_desc *p)
+{
+ p->tdes23.tx_rd_des23.own_bit = 0;
+}
+
+/* Assign buffer lengths for descriptor */
+static void sxgbe_prepare_tx_desc(struct sxgbe_tx_norm_desc *p, u8 is_fd,
+ int buf1_len, int pkt_len, int cksum)
+{
+ p->tdes23.tx_rd_des23.first_desc = is_fd;
+ p->tdes23.tx_rd_des23.buf1_size = buf1_len;
+
+ p->tdes23.tx_rd_des23.tx_pkt_len.cksum_pktlen.total_pkt_len = pkt_len;
+
+}
+
+/* Set VLAN control information */
+static void sxgbe_tx_vlanctl_desc(struct sxgbe_tx_norm_desc *p, int vlan_ctl)
+{
+ p->tdes23.tx_rd_des23.vlan_tag_ctl = vlan_ctl;
+}
+
+/* Set the owner of Normal descriptor */
+static void sxgbe_set_tx_owner(struct sxgbe_tx_norm_desc *p)
+{
+ p->tdes23.tx_rd_des23.own_bit = 1;
+}
+/* Get the owner of Normal descriptor */
+static int sxgbe_get_tx_owner(struct sxgbe_tx_norm_desc *p)
+{
+ return p->tdes23.tx_rd_des23.own_bit;
+}
+
+/* Invoked by the xmit function to close the tx descriptor */
+static void sxgbe_close_tx_desc(struct sxgbe_tx_norm_desc *p)
+{
+ p->tdes23.tx_rd_des23.last_desc = 1;
+ p->tdes23.tx_rd_des23.int_on_com = 1;
+}
+
+/* Clean the tx descriptor as soon as the tx irq is received */
+static void sxgbe_release_tx_desc(struct sxgbe_tx_norm_desc *p)
+{
+ memset(p, 0, sizeof(struct sxgbe_tx_norm_desc));
+}
+
+/* Clear interrupt on tx frame completion. When this bit is
+ * set an interrupt happens as soon as the frame is transmitted
+ */
+static void sxgbe_clear_tx_ic(struct sxgbe_tx_norm_desc *p)
+{
+ p->tdes23.tx_rd_des23.int_on_com = 0;
+}
+
+/* Last tx segment reports the transmit status */
+static int sxgbe_get_tx_ls(struct sxgbe_tx_norm_desc *p)
+{
+ return p->tdes23.tx_rd_des23.last_desc;
+}
+
+/* Get the buffer size from the descriptor */
+static int sxgbe_get_tx_len(struct sxgbe_tx_norm_desc *p)
+{
+ return p->tdes23.tx_rd_des23.buf1_size;
+}
+
+/* Set tx timestamp enable bit */
+static void sxgbe_tx_enable_tstamp(struct sxgbe_tx_norm_desc *p)
+{
+ p->tdes23.tx_rd_des23.timestmp_enable = 1;
+}
+
+/* get tx timestamp status */
+static int sxgbe_get_tx_timestamp_status(struct sxgbe_tx_norm_desc *p)
+{
+ return p->tdes23.tx_rd_des23.timestmp_enable;
+}
+
+/* TX Context Descripto Specific */
+static void sxgbe_init_tx_ctxtdesc(struct sxgbe_tx_ctxt_desc *p)
+{
+ p->ctxt_bit = 1;
+ p->own_bit = 0;
+}
+
+/* Set the owner of TX context descriptor */
+static void sxgbe_set_tx_ctxt_owner(struct sxgbe_tx_ctxt_desc *p)
+{
+ p->own_bit = 1;
+}
+
+/* Get the owner of TX context descriptor */
+static int sxgbe_get_tx_ctxt_owner(struct sxgbe_tx_ctxt_desc *p)
+{
+ return p->own_bit;
+}
+
+/* Set TX mss in TX context Descriptor */
+static void sxgbe_tx_ctxt_desc_setmss(struct sxgbe_tx_ctxt_desc *p, int mss)
+{
+ p->maxseg_size = mss;
+}
+
+/* Get TX mss from TX context Descriptor */
+static int sxgbe_tx_ctxt_desc_getmss(struct sxgbe_tx_ctxt_desc *p)
+{
+ return p->maxseg_size;
+}
+
+/* Set IVLAN information */
+static void sxgbe_tx_ctxt_desc_set_ivlantag(struct sxgbe_tx_ctxt_desc *p,
+ int is_ivlanvalid, int ivlan_tag,
+ int ivlan_ctl)
+{
+ if (is_ivlanvalid) {
+ p->ivlan_tag_valid = is_ivlanvalid;
+ p->ivlan_tag = ivlan_tag;
+ p->ivlan_tag_ctl = ivlan_ctl;
+ }
+}
+
+/* Return IVLAN Tag */
+static int sxgbe_tx_ctxt_desc_get_ivlantag(struct sxgbe_tx_ctxt_desc *p)
+{
+ return p->ivlan_tag;
+}
+
+/* Set VLAN Tag */
+static void sxgbe_tx_ctxt_desc_set_vlantag(struct sxgbe_tx_ctxt_desc *p,
+ int is_vlanvalid, int vlan_tag)
+{
+ if (is_vlanvalid) {
+ p->vltag_valid = is_vlanvalid;
+ p->vlan_tag = vlan_tag;
+ }
+}
+
+/* Return VLAN Tag */
+static int sxgbe_tx_ctxt_desc_get_vlantag(struct sxgbe_tx_ctxt_desc *p)
+{
+ return p->vlan_tag;
+}
+
+/* Set Time stamp */
+static void sxgbe_tx_ctxt_desc_set_tstamp(struct sxgbe_tx_ctxt_desc *p,
+ u8 ostc_enable, u64 tstamp)
+{
+ if (ostc_enable) {
+ p->ostc = ostc_enable;
+ p->tstamp_lo = (u32) tstamp;
+ p->tstamp_hi = (u32) (tstamp>>32);
+ }
+}
+/* Close TX context descriptor */
+static void sxgbe_close_tx_ctxt_desc(struct sxgbe_tx_ctxt_desc *p)
+{
+ p->own_bit = 1;
+}
+
+/* WB status of context descriptor */
+static int sxgbe_get_tx_ctxt_cde(struct sxgbe_tx_ctxt_desc *p)
+{
+ return p->ctxt_desc_err;
+}
+
+/* DMA RX descriptor ring initialization */
+static void sxgbe_init_rx_desc(struct sxgbe_rx_norm_desc *p, int disable_rx_ic,
+ int mode, int end)
+{
+ p->rdes23.rx_rd_des23.own_bit = 1;
+ if (disable_rx_ic)
+ p->rdes23.rx_rd_des23.int_on_com = disable_rx_ic;
+}
+
+/* Get RX own bit */
+static int sxgbe_get_rx_owner(struct sxgbe_rx_norm_desc *p)
+{
+ return p->rdes23.rx_rd_des23.own_bit;
+}
+
+/* Set RX own bit */
+static void sxgbe_set_rx_owner(struct sxgbe_rx_norm_desc *p)
+{
+ p->rdes23.rx_rd_des23.own_bit = 1;
+}
+
+/* Get the receive frame size */
+static int sxgbe_get_rx_frame_len(struct sxgbe_rx_norm_desc *p)
+{
+ return p->rdes23.rx_wb_des23.pkt_len;
+}
+
+/* Return first Descriptor status */
+static int sxgbe_get_rx_fd_status(struct sxgbe_rx_norm_desc *p)
+{
+ return p->rdes23.rx_wb_des23.first_desc;
+}
+
+/* Return Last Descriptor status */
+static int sxgbe_get_rx_ld_status(struct sxgbe_rx_norm_desc *p)
+{
+ return p->rdes23.rx_wb_des23.last_desc;
+}
+
+
+/* Return the RX status looking at the WB fields */
+static void sxgbe_rx_wbstatus(struct sxgbe_rx_norm_desc *p,
+ struct sxgbe_extra_stats *x)
+{
+
+ if (p->rdes23.rx_wb_des23.err_summary) {
+ switch (p->rdes23.rx_wb_des23.err_l2_type) {
+ case RX_GMII_ERR:
+ x->rx_code_gmii_err++;
+ break;
+ case RX_WATCHDOG_ERR:
+ x->rx_watchdog_err++;
+ break;
+ case RX_CRC_ERR:
+ x->rx_crc_err++;
+ break;
+ case RX_GAINT_ERR:
+ x->rx_gaint_pkt_err++;
+ break;
+ case RX_IP_HDR_ERR:
+ x->ip_hdr_err++;
+ break;
+ case RX_PAYLOAD_ERR:
+ x->ip_payload_err++;
+ break;
+ case RX_OVERFLOW_ERR:
+ x->overflow_error++;
+ break;
+ default:
+ pr_err("Invalid Error type\n");
+ break;
+ }
+ } else {
+ switch (p->rdes23.rx_wb_des23.err_l2_type) {
+ case RX_LEN_PKT:
+ x->len_pkt++;
+ break;
+ case RX_MACCTL_PKT:
+ x->mac_ctl_pkt++;
+ break;
+ case RX_DCBCTL_PKT:
+ x->dcb_ctl_pkt++;
+ break;
+ case RX_ARP_PKT:
+ x->arp_pkt++;
+ break;
+ case RX_OAM_PKT:
+ x->oam_pkt++;
+ break;
+ case RX_UNTAG_PKT:
+ x->untag_okt++;
+ break;
+ case RX_OTHER_PKT:
+ x->other_pkt++;
+ break;
+ case RX_SVLAN_PKT:
+ x->svlan_tag_pkt++;
+ break;
+ case RX_CVLAN_PKT:
+ x->cvlan_tag_pkt++;
+ break;
+ case RX_DVLAN_OCVLAN_ICVLAN_PKT:
+ x->dvlan_ocvlan_icvlan_pkt++;
+ break;
+ case RX_DVLAN_OSVLAN_ISVLAN_PKT:
+ x->dvlan_osvlan_isvlan_pkt++;
+ break;
+ case RX_DVLAN_OSVLAN_ICVLAN_PKT:
+ x->dvlan_osvlan_icvlan_pkt++;
+ break;
+ case RX_DVLAN_OCVLAN_ISVLAN_PKT:
+ x->dvlan_ocvlan_icvlan_pkt++;
+ break;
+ default:
+ pr_err("Invalid L2 Packet type\n");
+ break;
+ }
+ }
+
+ /* L3/L4 Pkt type */
+ switch (p->rdes23.rx_wb_des23.layer34_pkt_type) {
+ case RX_NOT_IP_PKT:
+ x->not_ip_pkt++;
+ break;
+ case RX_IPV4_TCP_PKT:
+ x->ip4_tcp_pkt++;
+ break;
+ case RX_IPV4_UDP_PKT:
+ x->ip4_udp_pkt++;
+ break;
+ case RX_IPV4_ICMP_PKT:
+ x->ip4_icmp_pkt++;
+ break;
+ case RX_IPV4_UNKNOWN_PKT:
+ x->ip4_unknown_pkt++;
+ break;
+ case RX_IPV6_TCP_PKT:
+ x->ip6_tcp_pkt++;
+ break;
+ case RX_IPV6_UDP_PKT:
+ x->ip6_udp_pkt++;
+ break;
+ case RX_IPV6_ICMP_PKT:
+ x->ip6_icmp_pkt++;
+ break;
+ case RX_IPV6_UNKNOWN_PKT:
+ x->ip6_unknown_pkt++;
+ break;
+ default:
+ pr_err("Invalid L3/L4 Packet type\n");
+ break;
+ }
+
+ /* Filter */
+ if (p->rdes23.rx_wb_des23.vlan_filter_match)
+ x->vlan_filter_match++;
+
+ if (p->rdes23.rx_wb_des23.sa_filter_fail)
+ x->sa_filter_fail++;
+
+ if (p->rdes23.rx_wb_des23.da_filter_fail)
+ x->da_filter_fail++;
+
+ if (p->rdes23.rx_wb_des23.hash_filter_pass)
+ x->hash_filter_pass++;
+
+ if (p->rdes23.rx_wb_des23.l3_filter_match)
+ x->l3_filter_match++;
+
+ if (p->rdes23.rx_wb_des23.l4_filter_match)
+ x->l4_filter_match++;
+
+}
+
+/* Get own bit of context descriptor */
+static int sxgbe_get_rx_ctxt_owner(struct sxgbe_rx_ctxt_desc *p)
+{
+ return p->own_bit;
+}
+
+/* Set own bit for context descriptor */
+static void sxgbe_set_ctxt_rx_owner(struct sxgbe_rx_ctxt_desc *p)
+{
+ p->own_bit = 1;
+}
+
+
+/* Return the reception status looking at Context control information */
+static void sxgbe_rx_ctxt_wbstatus(struct sxgbe_rx_ctxt_desc *p,
+ struct sxgbe_extra_stats *x)
+{
+ if (p->tstamp_dropped)
+ x->timestamp_dropped++;
+
+ /* ptp */
+ if (p->ptp_msgtype == RX_NO_PTP)
+ x->rx_msg_type_no_ptp++;
+ else if (p->ptp_msgtype == RX_PTP_SYNC)
+ x->rx_ptp_type_sync++;
+ else if (p->ptp_msgtype == RX_PTP_FOLLOW_UP)
+ x->rx_ptp_type_follow_up++;
+ else if (p->ptp_msgtype == RX_PTP_DELAY_REQ)
+ x->rx_ptp_type_delay_req++;
+ else if (p->ptp_msgtype == RX_PTP_DELAY_RESP)
+ x->rx_ptp_type_delay_resp++;
+ else if (p->ptp_msgtype == RX_PTP_PDELAY_REQ)
+ x->rx_ptp_type_pdelay_req++;
+ else if (p->ptp_msgtype == RX_PTP_PDELAY_RESP)
+ x->rx_ptp_type_pdelay_resp++;
+ else if (p->ptp_msgtype == RX_PTP_PDELAY_FOLLOW_UP)
+ x->rx_ptp_type_pdelay_follow_up++;
+ else if (p->ptp_msgtype == RX_PTP_ANNOUNCE)
+ x->rx_ptp_announce++;
+ else if (p->ptp_msgtype == RX_PTP_MGMT)
+ x->rx_ptp_mgmt++;
+ else if (p->ptp_msgtype == RX_PTP_SIGNAL)
+ x->rx_ptp_signal++;
+ else if (p->ptp_msgtype == RX_PTP_RESV_MSG)
+ x->rx_ptp_resv_msg_type++;
+}
+
+/* Get rx timestamp status */
+static int sxgbe_get_rx_ctxt_tstamp_status(struct sxgbe_rx_ctxt_desc *p)
+{
+ if ((p->tstamp_hi == 0xffffffff) && (p->tstamp_lo == 0xffffffff)) {
+ pr_err("Time stamp corrupted\n");
+ return 0;
+ }
+
+ return p->tstamp_available;
+}
+
+
+static u64 sxgbe_get_rx_timestamp(struct sxgbe_rx_ctxt_desc *p)
+{
+ u64 ns;
+ ns = p->tstamp_lo;
+ ns += p->tstamp_hi * 1000000000ULL;
+
+ return ns;
+}
+
+static const struct sxgbe_desc_ops desc_ops = {
+ .init_tx_desc = sxgbe_init_tx_desc,
+ .prepare_tx_desc = sxgbe_prepare_tx_desc,
+ .tx_vlanctl_desc = sxgbe_tx_vlanctl_desc,
+ .set_tx_owner = sxgbe_set_tx_owner,
+ .get_tx_owner = sxgbe_get_tx_owner,
+ .close_tx_desc = sxgbe_close_tx_desc,
+ .release_tx_desc = sxgbe_release_tx_desc,
+ .clear_tx_ic = sxgbe_clear_tx_ic,
+ .get_tx_ls = sxgbe_get_tx_ls,
+ .get_tx_len = sxgbe_get_tx_len,
+ .tx_enable_tstamp = sxgbe_tx_enable_tstamp,
+ .get_tx_timestamp_status = sxgbe_get_tx_timestamp_status,
+ .tx_ctxt_desc_set_ivlantag = sxgbe_tx_ctxt_desc_set_ivlantag,
+ .tx_ctxt_desc_get_ivlantag = sxgbe_tx_ctxt_desc_get_ivlantag,
+ .tx_ctxt_desc_set_vlantag = sxgbe_tx_ctxt_desc_set_vlantag,
+ .tx_ctxt_desc_get_vlantag = sxgbe_tx_ctxt_desc_get_vlantag,
+ .tx_ctxt_set_tstamp = sxgbe_tx_ctxt_desc_set_tstamp,
+ .init_rx_desc = sxgbe_init_rx_desc,
+ .get_rx_owner = sxgbe_get_rx_owner,
+ .set_rx_owner = sxgbe_set_rx_owner,
+ .get_rx_frame_len = sxgbe_get_rx_frame_len,
+ .get_rx_fd_status = sxgbe_get_rx_fd_status,
+ .get_rx_ld_status = sxgbe_get_rx_ld_status,
+ .rx_wbstatus = sxgbe_rx_wbstatus,
+ .get_rx_ctxt_owner = sxgbe_get_rx_ctxt_owner,
+ .set_rx_ctxt_owner = sxgbe_set_ctxt_rx_owner,
+ .rx_ctxt_wbstatus = sxgbe_rx_ctxt_wbstatus,
+ .get_rx_ctxt_tstamp_status = sxgbe_get_rx_ctxt_tstamp_status,
+ .get_timestamp = sxgbe_get_rx_timestamp,
+};
+
+const struct sxgbe_desc_ops *sxgbe_get_desc_ops(void)
+{
+ return &desc_ops;
+}
new file mode 100644
@@ -0,0 +1,291 @@
+/* 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_DESC_H__
+#define __SXGBE_DESC_H__
+
+#define SXGBE_DESC_SIZE_BYTES 16
+
+/* forward declaration */
+struct sxgbe_extra_stats;
+
+/* Transmit checksum insertion control */
+enum tdes_csum_insertion {
+ cic_disabled = 0, /* Checksum Insertion Control */
+ cic_only_ip = 1, /* Only IP header */
+ /* IP header but pseudoheader is not calculated */
+ cic_no_pseudoheader = 2,
+ cic_full = 3, /* IP header and pseudoheader */
+};
+
+struct sxgbe_tx_norm_desc {
+ u64 tdes01; /* buf1 address */
+ union {
+ /* TX Read-Format Desc 2,3 */
+ struct {
+ /* TDES2 */
+ u32 buf1_size:14;
+ u32 vlan_tag_ctl:2;
+ u32 buf2_size:14;
+ u32 timestmp_enable:1;
+ u32 int_on_com:1;
+ /* TDES3 */
+ union {
+ u32 tcp_payload_len:18;
+ struct {
+ u32 total_pkt_len:15;
+ u32 reserved1:1;
+ u32 cksum_ctl:2;
+ } cksum_pktlen;
+ } tx_pkt_len;
+
+ u32 tse_bit:1;
+ u32 tcp_hdr_len:4;
+ u32 sa_insert_ctl:3;
+ u32 crc_pad_ctl:2;
+ u32 last_desc:1;
+ u32 first_desc:1;
+ u32 ctxt_bit:1;
+ u32 own_bit:1;
+ } tx_rd_des23;
+
+ /* tx write back Desc 2,3 */
+ struct {
+ /* WB TES2 */
+ u32 reserved1:32;
+ /* WB TES3 */
+ u32 reserved2:31;
+ u32 own_bit:1;
+ } tx_wb_des23;
+ } tdes23;
+};
+
+struct sxgbe_rx_norm_desc {
+ union {
+ u32 rdes0; /* buf1 address */
+ struct {
+ u32 out_vlan_tag:16;
+ u32 in_vlan_tag:16;
+ } wb_rx_des0;
+ } rd_wb_des0;
+
+ union {
+ u32 rdes1; /* buf2 address or buf1[63:32] */
+ u32 rss_hash; /* Write-back RX */
+ } rd_wb_des1;
+
+ union {
+ /* RX Read format Desc 2,3 */
+ struct{
+ /* RDES2 */
+ u32 buf2_addr:32;
+ /* RDES3 */
+ u32 buf2_hi_addr:30;
+ u32 int_on_com:1;
+ u32 own_bit:1;
+ } rx_rd_des23;
+
+ /* RX write back */
+ struct{
+ /* WB RDES2 */
+ u32 hdr_len:10;
+ u32 rdes2_reserved:2;
+ u32 elrd_val:1;
+ u32 iovt_sel:1;
+ u32 res_pkt:1;
+ u32 vlan_filter_match:1;
+ u32 sa_filter_fail:1;
+ u32 da_filter_fail:1;
+ u32 hash_filter_pass:1;
+ u32 macaddr_filter_match:8;
+ u32 l3_filter_match:1;
+ u32 l4_filter_match:1;
+ u32 l34_filter_num:3;
+
+ /* WB RDES3 */
+ u32 pkt_len:14;
+ u32 rdes3_reserved:1;
+ u32 err_summary:15;
+ u32 err_l2_type:4;
+ u32 layer34_pkt_type:4;
+ u32 no_coagulation_pkt:1;
+ u32 in_seq_pkt:1;
+ u32 rss_valid:1;
+ u32 context_des_avail:1;
+ u32 last_desc:1;
+ u32 first_desc:1;
+ u32 recv_context_desc:1;
+ u32 own_bit:1;
+ } rx_wb_des23;
+ } rdes23;
+};
+
+/* Context descriptor structure */
+struct sxgbe_tx_ctxt_desc {
+ u32 tstamp_lo:32;
+ u32 tstamp_hi:32;
+ u32 maxseg_size:15;
+ u32 reserved1:1;
+ u32 ivlan_tag:16;
+ u32 vlan_tag:16;
+ u32 vltag_valid:1;
+ u32 ivlan_tag_valid:1;
+ u32 ivlan_tag_ctl:2;
+ u32 reserved2:3;
+ u32 ctxt_desc_err:1;
+ u32 reserved3:2;
+ u32 ostc:1;
+ u32 tcmssv:1;
+ u32 reserved4:2;
+ u32 ctxt_bit:1;
+ u32 own_bit:1;
+};
+
+struct sxgbe_rx_ctxt_desc {
+ u32 tstamp_lo:32;
+ u32 tstamp_hi:32;
+ u32 reserved1:32;
+ u32 ptp_msgtype:4;
+ u32 tstamp_available:1;
+ u32 ptp_rsp_err:1;
+ u32 tstamp_dropped:1;
+ u32 reserved2:23;
+ u32 rx_ctxt_desc:1;
+ u32 own_bit:1;
+};
+
+struct sxgbe_desc_ops {
+ /* DMA TX descriptor ring initialization */
+ void (*init_tx_desc)(struct sxgbe_tx_norm_desc *p);
+
+ /* Invoked by the xmit function to prepare the tx descriptor */
+ void (*tx_enable_tse)(struct sxgbe_tx_norm_desc *p, u8 is_tse,
+ u32 hdr_len, u32 payload_len);
+
+ /* Assign buffer lengths for descriptor */
+ void (*prepare_tx_desc)(struct sxgbe_tx_norm_desc *p, u8 is_fd,
+ int buf1_len, int pkt_len, int cksum);
+
+ /* Set VLAN control information */
+ void (*tx_vlanctl_desc)(struct sxgbe_tx_norm_desc *p, int vlan_ctl);
+
+ /* Set the owner of the descriptor */
+ void (*set_tx_owner)(struct sxgbe_tx_norm_desc *p);
+
+ /* Get the owner of the descriptor */
+ int (*get_tx_owner)(struct sxgbe_tx_norm_desc *p);
+
+ /* Invoked by the xmit function to close the tx descriptor */
+ void (*close_tx_desc)(struct sxgbe_tx_norm_desc *p);
+
+ /* Clean the tx descriptor as soon as the tx irq is received */
+ void (*release_tx_desc)(struct sxgbe_tx_norm_desc *p);
+
+ /* Clear interrupt on tx frame completion. When this bit is
+ * set an interrupt happens as soon as the frame is transmitted
+ */
+ void (*clear_tx_ic)(struct sxgbe_tx_norm_desc *p);
+
+ /* Last tx segment reports the transmit status */
+ int (*get_tx_ls)(struct sxgbe_tx_norm_desc *p);
+
+ /* Get the buffer size from the descriptor */
+ int (*get_tx_len)(struct sxgbe_tx_norm_desc *p);
+
+ /* Set tx timestamp enable bit */
+ void (*tx_enable_tstamp)(struct sxgbe_tx_norm_desc *p);
+
+ /* get tx timestamp status */
+ int (*get_tx_timestamp_status)(struct sxgbe_tx_norm_desc *p);
+
+ /* TX Context Descripto Specific */
+ void (*init_tx_ctxt_desc)(struct sxgbe_tx_ctxt_desc *p);
+
+ /* Set the owner of the TX context descriptor */
+ void (*set_tx_ctxt_owner)(struct sxgbe_tx_ctxt_desc *p);
+
+ /* Get the owner of the TX context descriptor */
+ int (*get_tx_ctxt_owner)(struct sxgbe_tx_ctxt_desc *p);
+
+ /* Set TX mss */
+ void (*tx_ctxt_desc_setmss)(struct sxgbe_tx_ctxt_desc *p, int mss);
+
+ /* Set TX mss */
+ int (*tx_ctxt_desc_get_mss)(struct sxgbe_tx_ctxt_desc *p);
+
+ /* Set IVLAN information */
+ void (*tx_ctxt_desc_set_ivlantag)(struct sxgbe_tx_ctxt_desc *p,
+ int is_ivlanvalid, int ivlan_tag,
+ int ivlan_ctl);
+
+ /* Return IVLAN Tag */
+ int (*tx_ctxt_desc_get_ivlantag)(struct sxgbe_tx_ctxt_desc *p);
+
+ /* Set VLAN Tag */
+ void (*tx_ctxt_desc_set_vlantag)(struct sxgbe_tx_ctxt_desc *p,
+ int is_vlanvalid, int vlan_tag);
+
+ /* Return VLAN Tag */
+ int (*tx_ctxt_desc_get_vlantag)(struct sxgbe_tx_ctxt_desc *p);
+
+ /* Set Time stamp */
+ void (*tx_ctxt_set_tstamp)(struct sxgbe_tx_ctxt_desc *p,
+ u8 ostc_enable, u64 tstamp);
+
+ /* Close TX context descriptor */
+ void (*close_tx_ctxt_desc)(struct sxgbe_tx_ctxt_desc *p);
+
+ /* WB status of context descriptor */
+ int (*get_tx_ctxt_cde)(struct sxgbe_tx_ctxt_desc *p);
+
+ /* DMA RX descriptor ring initialization */
+ void (*init_rx_desc)(struct sxgbe_rx_norm_desc *p, int disable_rx_ic,
+ int mode, int end);
+
+ /* Get own bit */
+ int (*get_rx_owner)(struct sxgbe_rx_norm_desc *p);
+
+ /* Set own bit */
+ void (*set_rx_owner)(struct sxgbe_rx_norm_desc *p);
+
+ /* Get the receive frame size */
+ int (*get_rx_frame_len)(struct sxgbe_rx_norm_desc *p);
+
+ /* Return first Descriptor status */
+ int (*get_rx_fd_status)(struct sxgbe_rx_norm_desc *p);
+
+ /* Return first Descriptor status */
+ int (*get_rx_ld_status)(struct sxgbe_rx_norm_desc *p);
+
+ /* Return the reception status looking at the RDES1 */
+ void (*rx_wbstatus)(struct sxgbe_rx_norm_desc *p,
+ struct sxgbe_extra_stats *x);
+
+ /* Get own bit */
+ int (*get_rx_ctxt_owner)(struct sxgbe_rx_ctxt_desc *p);
+
+ /* Set own bit */
+ void (*set_rx_ctxt_owner)(struct sxgbe_rx_ctxt_desc *p);
+
+ /* Return the reception status looking at Context control information */
+ void (*rx_ctxt_wbstatus)(struct sxgbe_rx_ctxt_desc *p,
+ struct sxgbe_extra_stats *x);
+
+ /* Get rx timestamp status */
+ int (*get_rx_ctxt_tstamp_status)(struct sxgbe_rx_ctxt_desc *p);
+
+ /* Get timestamp value for rx, need to check this */
+ u64 (*get_timestamp)(struct sxgbe_rx_ctxt_desc *p);
+};
+
+const struct sxgbe_desc_ops *sxgbe_get_desc_ops(void);
+
+#endif /* __SXGBE_DESC_H__ */
new file mode 100644
@@ -0,0 +1,376 @@
+/* 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.
+ */
+#include <linux/io.h>
+#include <linux/delay.h>
+#include <linux/export.h>
+#include <linux/io.h>
+#include <linux/netdevice.h>
+#include <linux/phy.h>
+
+#include "sxgbe_common.h"
+#include "sxgbe_dma.h"
+#include "sxgbe_reg.h"
+#include "sxgbe_desc.h"
+
+/* DMA core initialization */
+static int sxgbe_dma_init(void __iomem *ioaddr, int fix_burst,
+ int burst_map, int adv_addr_mode)
+{
+ int retry_count = 10;
+ u32 reg_val;
+
+ /* reset the DMA */
+ writel(SXGBE_DMA_SOFT_RESET, ioaddr + SXGBE_DMA_MODE_REG);
+ while (retry_count--) {
+ if (!(readl(ioaddr + SXGBE_DMA_MODE_REG) &
+ SXGBE_DMA_SOFT_RESET))
+ break;
+ mdelay(10);
+ }
+
+ if (retry_count < 0)
+ return -EBUSY;
+
+ reg_val = readl(ioaddr + SXGBE_DMA_SYSBUS_MODE_REG);
+
+ /* if fix_burst = 0, Set UNDEF = 1 of DMA_Sys_Mode Register.
+ * if fix_burst = 1, Set UNDEF = 0 of DMA_Sys_Mode Register.
+ * burst_map is bitmap for BLEN[4, 8, 16, 32, 64, 128 and 256].
+ * Set burst_map irrespective of fix_burst value.
+ */
+ if (!fix_burst)
+ reg_val |= SXGBE_DMA_AXI_UNDEF_BURST;
+
+ /* enable adavnced address mode */
+ if (adv_addr_mode)
+ reg_val |= SXGBE_DMA_ENHACE_ADDR_MODE;
+
+ /* write burst len map */
+ reg_val |= (burst_map << SXGBE_DMA_BLENMAP_LSHIFT);
+
+ writel(reg_val, ioaddr + SXGBE_DMA_SYSBUS_MODE_REG);
+
+ return 0;
+}
+
+static void sxgbe_dma_channel_init(void __iomem *ioaddr, int cha_num,
+ int fix_burst, int pbl, dma_addr_t dma_tx,
+ dma_addr_t dma_rx, int t_rsize, int r_rsize)
+{
+ u32 reg_val;
+ dma_addr_t dma_addr;
+
+ reg_val = readl(ioaddr + SXGBE_DMA_CHA_CTL_REG(cha_num));
+ /* set the pbl */
+ if (fix_burst) {
+ reg_val |= SXGBE_DMA_PBL_X8MODE;
+ writel(reg_val, ioaddr + SXGBE_DMA_CHA_CTL_REG(cha_num));
+ /* program the TX pbl */
+ reg_val = readl(ioaddr + SXGBE_DMA_CHA_TXCTL_REG(cha_num));
+ reg_val |= (pbl << SXGBE_DMA_TXPBL_LSHIFT);
+ writel(reg_val, ioaddr + SXGBE_DMA_CHA_TXCTL_REG(cha_num));
+ /* program the RX pbl */
+ reg_val = readl(ioaddr + SXGBE_DMA_CHA_RXCTL_REG(cha_num));
+ reg_val |= (pbl << SXGBE_DMA_RXPBL_LSHIFT);
+ writel(reg_val, ioaddr + SXGBE_DMA_CHA_RXCTL_REG(cha_num));
+ }
+
+ /* program desc registers */
+ writel((dma_tx >> 32),
+ ioaddr + SXGBE_DMA_CHA_TXDESC_HADD_REG(cha_num));
+ writel((dma_tx & 0xFFFFFFFF),
+ ioaddr + SXGBE_DMA_CHA_TXDESC_LADD_REG(cha_num));
+
+ writel((dma_rx >> 32),
+ ioaddr + SXGBE_DMA_CHA_RXDESC_HADD_REG(cha_num));
+ writel((dma_rx & 0xFFFFFFFF),
+ ioaddr + SXGBE_DMA_CHA_RXDESC_LADD_REG(cha_num));
+
+ /* program tail pointers */
+ /* assumption: upper 32 bits are constant and
+ * same as TX/RX desc list
+ */
+ dma_addr = dma_tx + ((t_rsize-1) * SXGBE_DESC_SIZE_BYTES);
+ writel((dma_addr & 0xFFFFFFFF),
+ ioaddr + SXGBE_DMA_CHA_TXDESC_TAILPTR_REG(cha_num));
+
+ dma_addr = dma_rx + ((r_rsize-1) * SXGBE_DESC_SIZE_BYTES);
+ writel((dma_addr & 0xFFFFFFFF),
+ ioaddr + SXGBE_DMA_CHA_RXDESC_LADD_REG(cha_num));
+ /* program the ring sizes */
+ writel(t_rsize-1, ioaddr + SXGBE_DMA_CHA_TXDESC_RINGLEN_REG(cha_num));
+ writel(r_rsize-1, ioaddr + SXGBE_DMA_CHA_RXDESC_RINGLEN_REG(cha_num));
+
+ /* Enable TX/RX interrupts */
+ writel(SXGBE_DMA_ENA_INT,
+ ioaddr + SXGBE_DMA_CHA_INT_ENABLE_REG(cha_num));
+}
+
+static void sxgbe_enable_dma_transmission(void __iomem *ioaddr, int cha_num)
+{
+ u32 tx_config;
+ tx_config = readl(ioaddr + SXGBE_DMA_CHA_TXCTL_REG(cha_num));
+ tx_config |= SXGBE_TX_START_DMA;
+ writel(tx_config, ioaddr + SXGBE_DMA_CHA_TXCTL_REG(cha_num));
+}
+
+static void sxgbe_enable_dma_irq(void __iomem *ioaddr, int dma_cnum)
+{
+ /* Enable TX/RX interrupts */
+ writel(SXGBE_DMA_ENA_INT,
+ ioaddr + SXGBE_DMA_CHA_INT_ENABLE_REG(dma_cnum));
+}
+
+static void sxgbe_disable_dma_irq(void __iomem *ioaddr, int dma_cnum)
+{
+ /* Disable TX/RX interrupts */
+ writel(0, ioaddr + SXGBE_DMA_CHA_INT_ENABLE_REG(dma_cnum));
+}
+
+static void sxgbe_dma_start_tx(void __iomem *ioaddr, int tchannels)
+{
+ int cnum;
+ u32 tx_ctl_reg;
+
+ for (cnum = 0; cnum < tchannels; cnum++) {
+ tx_ctl_reg = readl(ioaddr + SXGBE_DMA_CHA_TXCTL_REG(cnum));
+ tx_ctl_reg |= SXGBE_TX_ENABLE;
+ writel(tx_ctl_reg,
+ ioaddr + SXGBE_DMA_CHA_TXCTL_REG(cnum));
+ }
+}
+
+static void sxgbe_dma_start_tx_queue(void __iomem *ioaddr, int dma_cnum)
+{
+ u32 tx_ctl_reg;
+
+ tx_ctl_reg = readl(ioaddr + SXGBE_DMA_CHA_TXCTL_REG(dma_cnum));
+ tx_ctl_reg |= SXGBE_TX_ENABLE;
+ writel(tx_ctl_reg, ioaddr + SXGBE_DMA_CHA_TXCTL_REG(dma_cnum));
+}
+
+static void sxgbe_dma_stop_tx_queue(void __iomem *ioaddr, int dma_cnum)
+{
+ u32 tx_ctl_reg;
+
+ tx_ctl_reg = readl(ioaddr + SXGBE_DMA_CHA_TXCTL_REG(dma_cnum));
+ tx_ctl_reg &= ~(SXGBE_TX_ENABLE);
+ writel(tx_ctl_reg, ioaddr + SXGBE_DMA_CHA_TXCTL_REG(dma_cnum));
+}
+
+static void sxgbe_dma_stop_tx(void __iomem *ioaddr, int tchannels)
+{
+ int cnum;
+ u32 tx_ctl_reg;
+
+ for (cnum = 0; cnum < tchannels; cnum++) {
+ tx_ctl_reg = readl(ioaddr + SXGBE_DMA_CHA_TXCTL_REG(cnum));
+ tx_ctl_reg &= ~(SXGBE_TX_ENABLE);
+ writel(tx_ctl_reg, ioaddr + SXGBE_DMA_CHA_TXCTL_REG(cnum));
+ }
+}
+
+static void sxgbe_dma_start_rx(void __iomem *ioaddr, int rchannels)
+{
+ int cnum;
+ u32 rx_ctl_reg;
+
+ for (cnum = 0; cnum < rchannels; cnum++) {
+ rx_ctl_reg = readl(ioaddr + SXGBE_DMA_CHA_RXCTL_REG(cnum));
+ rx_ctl_reg |= SXGBE_RX_ENABLE;
+ writel(rx_ctl_reg,
+ ioaddr + SXGBE_DMA_CHA_RXCTL_REG(cnum));
+ }
+}
+
+static void sxgbe_dma_stop_rx(void __iomem *ioaddr, int rchannels)
+{
+ int cnum;
+ u32 rx_ctl_reg;
+
+ for (cnum = 0; cnum < rchannels; cnum++) {
+ rx_ctl_reg = readl(ioaddr + SXGBE_DMA_CHA_RXCTL_REG(cnum));
+ rx_ctl_reg &= ~(SXGBE_RX_ENABLE);
+ writel(rx_ctl_reg, ioaddr + SXGBE_DMA_CHA_RXCTL_REG(cnum));
+ }
+}
+
+static int sxgbe_tx_dma_int_status(void __iomem *ioaddr, int channel_no,
+ struct sxgbe_extra_stats *x)
+{
+ u32 int_status = readl(ioaddr + SXGBE_DMA_CHA_STATUS_REG(channel_no));
+ u32 clear_val = 0;
+ u32 ret_val = 0;
+
+ /* TX Normal Interrupt Summary */
+ if (likely(int_status & SXGBE_DMA_INT_STATUS_NIS)) {
+ x->normal_irq_n++;
+ if (int_status & SXGBE_DMA_INT_STATUS_TI) {
+ ret_val |= handle_tx;
+ x->tx_normal_irq_n++;
+ clear_val |= SXGBE_DMA_INT_STATUS_TI;
+ }
+
+ if (int_status & SXGBE_DMA_INT_STATUS_TBU) {
+ x->tx_underflow_irq++;
+ ret_val |= tx_bump_tc;
+ clear_val |= SXGBE_DMA_INT_STATUS_TBU;
+ }
+ } else if (unlikely(int_status & SXGBE_DMA_INT_STATUS_AIS)) {
+ /* TX Abnormal Interrupt Summary */
+ if (int_status & SXGBE_DMA_INT_STATUS_TPS) {
+ ret_val |= tx_hard_error;
+ clear_val |= SXGBE_DMA_INT_STATUS_TPS;
+ x->tx_process_stopped_irq++;
+ }
+
+ if (int_status & SXGBE_DMA_INT_STATUS_FBE) {
+ ret_val |= tx_hard_error;
+ x->fatal_bus_error_irq++;
+
+ /* Assumption: FBE bit is the combination of
+ * all the bus access erros and cleared when
+ * the respective error bits cleared
+ */
+
+ /* check for actual cause */
+ if (int_status & SXGBE_DMA_INT_STATUS_TEB0) {
+ x->tx_read_transfer_err++;
+ clear_val |= SXGBE_DMA_INT_STATUS_TEB0;
+ } else {
+ x->tx_write_transfer_err++;
+ }
+
+ if (int_status & SXGBE_DMA_INT_STATUS_TEB1) {
+ x->tx_desc_access_err++;
+ clear_val |= SXGBE_DMA_INT_STATUS_TEB1;
+ } else {
+ x->tx_buffer_access_err++;
+ }
+
+ if (int_status & SXGBE_DMA_INT_STATUS_TEB2) {
+ x->tx_data_transfer_err++;
+ clear_val |= SXGBE_DMA_INT_STATUS_TEB2;
+ }
+ }
+
+ /* context descriptor error */
+ if (int_status & SXGBE_DMA_INT_STATUS_CTXTERR) {
+ x->tx_ctxt_desc_err++;
+ clear_val |= SXGBE_DMA_INT_STATUS_CTXTERR;
+ }
+ }
+
+ /* clear the served bits */
+ writel(clear_val, ioaddr + SXGBE_DMA_CHA_STATUS_REG(channel_no));
+
+ return ret_val;
+}
+
+static int sxgbe_rx_dma_int_status(void __iomem *ioaddr, int channel_no,
+ struct sxgbe_extra_stats *x)
+{
+ u32 int_status = readl(ioaddr + SXGBE_DMA_CHA_STATUS_REG(channel_no));
+ u32 clear_val = 0;
+ u32 ret_val = 0;
+
+ /* RX Normal Interrupt Summary */
+ if (likely(int_status & SXGBE_DMA_INT_STATUS_NIS)) {
+ x->normal_irq_n++;
+ if (int_status & SXGBE_DMA_INT_STATUS_RI) {
+ ret_val |= handle_rx;
+ x->rx_normal_irq_n++;
+ clear_val |= SXGBE_DMA_INT_STATUS_RI;
+ }
+ } else if (unlikely(int_status & SXGBE_DMA_INT_STATUS_AIS)) {
+ /* RX Abnormal Interrupt Summary */
+ if (int_status & SXGBE_DMA_INT_STATUS_RBU) {
+ ret_val |= rx_bump_tc;
+ clear_val |= SXGBE_DMA_INT_STATUS_RBU;
+ x->rx_underflow_irq++;
+ }
+
+ if (int_status & SXGBE_DMA_INT_STATUS_RPS) {
+ ret_val |= rx_hard_error;
+ clear_val |= SXGBE_DMA_INT_STATUS_RPS;
+ x->rx_process_stopped_irq++;
+ }
+
+ if (int_status & SXGBE_DMA_INT_STATUS_FBE) {
+ ret_val |= rx_hard_error;
+ x->fatal_bus_error_irq++;
+
+ /* Assumption: FBE bit is the combination of
+ * all the bus access erros and cleared when
+ * the respective error bits cleared
+ */
+
+ /* check for actual cause */
+ if (int_status & SXGBE_DMA_INT_STATUS_REB0) {
+ x->rx_read_transfer_err++;
+ clear_val |= SXGBE_DMA_INT_STATUS_REB0;
+ } else {
+ x->rx_write_transfer_err++;
+ }
+
+ if (int_status & SXGBE_DMA_INT_STATUS_REB1) {
+ x->rx_desc_access_err++;
+ clear_val |= SXGBE_DMA_INT_STATUS_REB1;
+ } else {
+ x->rx_buffer_access_err++;
+ }
+
+ if (int_status & SXGBE_DMA_INT_STATUS_REB2) {
+ x->rx_data_transfer_err++;
+ clear_val |= SXGBE_DMA_INT_STATUS_REB2;
+ }
+ }
+ }
+
+ /* clear the served bits */
+ writel(clear_val, ioaddr + SXGBE_DMA_CHA_STATUS_REG(channel_no));
+
+ return ret_val;
+}
+
+/* Program the HW RX Watchdog */
+static void sxgbe_dma_rx_watchdog(void __iomem *ioaddr, u32 riwt)
+{
+ u32 que_num;
+
+ SXGBE_FOR_EACH_QUEUE(SXGBE_RX_QUEUES, que_num) {
+ writel(riwt,
+ ioaddr + SXGBE_DMA_CHA_INT_RXWATCHTMR_REG(que_num));
+ }
+}
+
+static const struct sxgbe_dma_ops sxgbe_dma_ops = {
+ .init = sxgbe_dma_init,
+ .cha_init = sxgbe_dma_channel_init,
+ .enable_dma_transmission = sxgbe_enable_dma_transmission,
+ .enable_dma_irq = sxgbe_enable_dma_irq,
+ .disable_dma_irq = sxgbe_disable_dma_irq,
+ .start_tx = sxgbe_dma_start_tx,
+ .start_tx_queue = sxgbe_dma_start_tx_queue,
+ .stop_tx = sxgbe_dma_stop_tx,
+ .stop_tx_queue = sxgbe_dma_stop_tx_queue,
+ .start_rx = sxgbe_dma_start_rx,
+ .stop_rx = sxgbe_dma_stop_rx,
+ .tx_dma_int_status = sxgbe_tx_dma_int_status,
+ .rx_dma_int_status = sxgbe_rx_dma_int_status,
+ .rx_watchdog = sxgbe_dma_rx_watchdog,
+};
+
+const struct sxgbe_dma_ops *sxgbe_get_dma_ops(void)
+{
+ return &sxgbe_dma_ops;
+}
new file mode 100644
@@ -0,0 +1,49 @@
+/* 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_DMA_H__
+#define __SXGBE_DMA_H__
+
+/* forward declaration */
+struct sxgbe_extra_stats;
+
+#define SXGBE_DMA_BLENMAP_LSHIFT 1
+#define SXGBE_DMA_TXPBL_LSHIFT 16
+#define SXGBE_DMA_RXPBL_LSHIFT 16
+#define DEFAULT_DMA_PBL 8
+
+struct sxgbe_dma_ops {
+ /* DMA core initialization */
+ int (*init)(void __iomem *ioaddr, int fix_burst,
+ int burst_map, int enhance_amode);
+ void (*cha_init)(void __iomem *ioaddr, int cha_num, int fix_burst,
+ int pbl, dma_addr_t dma_tx, dma_addr_t dma_rx,
+ int t_rzie, int r_rsize);
+ void (*enable_dma_transmission)(void __iomem *ioaddr, int dma_cnum);
+ void (*enable_dma_irq)(void __iomem *ioaddr, int dma_cnum);
+ void (*disable_dma_irq)(void __iomem *ioaddr, int dma_cnum);
+ void (*start_tx)(void __iomem *ioaddr, int tchannels);
+ void (*start_tx_queue)(void __iomem *ioaddr, int dma_cnum);
+ void (*stop_tx)(void __iomem *ioaddr, int tchannels);
+ void (*stop_tx_queue)(void __iomem *ioaddr, int dma_cnum);
+ void (*start_rx)(void __iomem *ioaddr, int rchannels);
+ void (*stop_rx)(void __iomem *ioaddr, int rchannels);
+ int (*tx_dma_int_status)(void __iomem *ioaddr, int channel_no,
+ struct sxgbe_extra_stats *x);
+ int (*rx_dma_int_status)(void __iomem *ioaddr, int channel_no,
+ struct sxgbe_extra_stats *x);
+ /* Program the HW RX Watchdog */
+ void (*rx_watchdog)(void __iomem *ioaddr, u32 riwt);
+};
+
+const struct sxgbe_dma_ops *sxgbe_get_dma_ops(void);
+
+#endif /* __SXGBE_CORE_H__ */
new file mode 100644
@@ -0,0 +1,44 @@
+/* 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.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/netdevice.h>
+#include <linux/phy.h>
+
+#include "sxgbe_common.h"
+
+struct sxgbe_stats {
+ char stat_string[ETH_GSTRING_LEN];
+ int sizeof_stat;
+ int stat_offset;
+};
+
+#define SXGBE_STAT(m) \
+{ \
+ #m, \
+ FIELD_SIZEOF(struct sxgbe_extra_stats, m), \
+ offsetof(struct sxgbe_priv_data, xstats.m) \
+}
+
+static const struct sxgbe_stats sxgbe_gstrings_stats[] = {
+};
+#define SXGBE_STATS_LEN ARRAY_SIZE(sxgbe_gstrings_stats)
+
+static const struct ethtool_ops sxgbe_ethtool_ops = {
+};
+
+void sxgbe_set_ethtool_ops(struct net_device *netdev)
+{
+ SET_ETHTOOL_OPS(netdev, &sxgbe_ethtool_ops);
+}
new file mode 100644
@@ -0,0 +1,2132 @@
+/* 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.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/clk.h>
+#include <linux/crc32.h>
+#include <linux/dma-mapping.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/if.h>
+#include <linux/if_ether.h>
+#include <linux/if_vlan.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/ip.h>
+#include <linux/kernel.h>
+#include <linux/mii.h>
+#include <linux/module.h>
+#include <linux/net_tstamp.h>
+#include <linux/netdevice.h>
+#include <linux/phy.h>
+#include <linux/platform_device.h>
+#include <linux/prefetch.h>
+#include <linux/skbuff.h>
+#include <linux/slab.h>
+#include <linux/tcp.h>
+#include <linux/sxgbe_platform.h>
+
+#include "sxgbe_common.h"
+#include "sxgbe_desc.h"
+#include "sxgbe_dma.h"
+#include "sxgbe_mtl.h"
+#include "sxgbe_reg.h"
+
+#define SXGBE_ALIGN(x) L1_CACHE_ALIGN(x)
+#define JUMBO_LEN 9000
+
+/* Module parameters */
+#define TX_TIMEO 5000
+#define DMA_TX_SIZE 512
+#define DMA_RX_SIZE 1024
+#define TC_DEFAULT 64
+#define DMA_BUFFER_SIZE BUF_SIZE_2KiB
+/* The default timer value as per the sxgbe specification 1 sec(1000 ms) */
+#define SXGBE_DEFAULT_LPI_TIMER 1000
+
+static int watchdog = TX_TIMEO;
+static int debug = -1;
+static int sxgbe_phyaddr = -1;
+static int dma_txsize = DMA_TX_SIZE;
+static int dma_rxsize = DMA_RX_SIZE;
+static int flow_ctrl = SXGBE_FLOW_OFF;
+static int pause = SXGBE_PAUSE_TIME;
+static int tx_tc = TC_DEFAULT;
+static int rx_tc = TC_DEFAULT;
+static int buf_sz = DMA_BUFFER_SIZE;
+
+module_param(watchdog, int, S_IRUGO | S_IWUSR);
+module_param(debug, int, S_IRUGO | S_IWUSR);
+module_param(sxgbe_phyaddr, int, S_IRUGO);
+module_param(dma_txsize, int, S_IRUGO | S_IWUSR);
+module_param(dma_rxsize, int, S_IRUGO | S_IWUSR);
+module_param(flow_ctrl, int, S_IRUGO | S_IWUSR);
+module_param(pause, int, S_IRUGO | S_IWUSR);
+module_param(tx_tc, int, S_IRUGO | S_IWUSR);
+module_param(rx_tc, int, S_IRUGO | S_IWUSR);
+module_param(buf_sz, int, S_IRUGO | S_IWUSR);
+
+static const u32 default_msg_level = (NETIF_MSG_DRV | NETIF_MSG_PROBE |
+ NETIF_MSG_LINK | NETIF_MSG_IFUP |
+ NETIF_MSG_IFDOWN | NETIF_MSG_TIMER);
+
+static irqreturn_t sxgbe_common_interrupt(int irq, void *dev_id);
+static irqreturn_t sxgbe_tx_interrupt(int irq, void *dev_id);
+static irqreturn_t sxgbe_rx_interrupt(int irq, void *dev_id);
+
+#define SXGBE_COAL_TIMER(x) (jiffies + usecs_to_jiffies(x))
+
+/**
+ * sxgbe_verify_args - verify the driver parameters.
+ * Description: it verifies if some wrong parameter is passed to the driver.
+ * Note that wrong parameters are replaced with the default values.
+ */
+static void sxgbe_verify_args(void)
+{
+ if (unlikely(watchdog < 0))
+ watchdog = TX_TIMEO;
+ if (unlikely(dma_rxsize < 0))
+ dma_rxsize = DMA_RX_SIZE;
+ if (unlikely(dma_txsize < 0))
+ dma_txsize = DMA_TX_SIZE;
+ if (unlikely((buf_sz < DMA_BUFFER_SIZE) || (buf_sz > BUF_SIZE_16KiB)))
+ buf_sz = DMA_BUFFER_SIZE;
+ if (unlikely(flow_ctrl > 1))
+ flow_ctrl = SXGBE_FLOW_AUTO;
+ else if (likely(flow_ctrl < 0))
+ flow_ctrl = SXGBE_FLOW_OFF;
+ if (unlikely((pause < 0) || (pause > 0xffff)))
+ pause = SXGBE_PAUSE_TIME;
+}
+
+/**
+ * sxgbe_clk_csr_set - dynamically set the MDC clock
+ * @priv: driver private structure
+ * Description: this is to dynamically set the MDC clock according to the csr
+ * clock input.
+ */
+static void sxgbe_clk_csr_set(struct sxgbe_priv_data *priv)
+{
+ u32 clk_rate = clk_get_rate(priv->sxgbe_clk);
+
+ /* assign the proper divider, this will be used during
+ * mdio communication
+ */
+ if (clk_rate < SXGBE_CSR_F_150M)
+ priv->clk_csr = SXGBE_CSR_100_150M;
+ else if ((clk_rate >= SXGBE_CSR_F_150M) &&
+ (clk_rate <= SXGBE_CSR_F_250M))
+ priv->clk_csr = SXGBE_CSR_150_250M;
+ else if ((clk_rate >= SXGBE_CSR_F_250M) &&
+ (clk_rate <= SXGBE_CSR_F_300M))
+ priv->clk_csr = SXGBE_CSR_250_300M;
+ else if ((clk_rate >= SXGBE_CSR_F_300M) &&
+ (clk_rate <= SXGBE_CSR_F_350M))
+ priv->clk_csr = SXGBE_CSR_300_350M;
+ else if ((clk_rate >= SXGBE_CSR_F_350M) &&
+ (clk_rate <= SXGBE_CSR_F_400M))
+ priv->clk_csr = SXGBE_CSR_350_400M;
+ else if ((clk_rate >= SXGBE_CSR_F_400M) &&
+ (clk_rate <= SXGBE_CSR_F_500M))
+ priv->clk_csr = SXGBE_CSR_400_500M;
+}
+
+static void print_pkt(unsigned char *buf, int len)
+{
+ pr_debug("len = %d byte, buf addr: 0x%p\n", len, buf);
+ print_hex_dump_debug(KBUILD_MODNAME ": ", DUMP_PREFIX_OFFSET, 16, 1,
+ buf, len, true);
+}
+
+/* minimum number of free TX descriptors required to wake up TX process */
+#define SXGBE_TX_THRESH(x) (x->dma_tx_size/4)
+
+static inline u32 sxgbe_tx_avail(struct sxgbe_tx_queue *queue, int tx_qsize)
+{
+ return queue->dirty_tx + tx_qsize - queue->cur_tx - 1;
+}
+
+/**
+ * sxgbe_adjust_link
+ * @dev: net device structure
+ * Description: it adjusts the link parameters.
+ */
+static void sxgbe_adjust_link(struct net_device *dev)
+{
+ struct sxgbe_priv_data *priv = netdev_priv(dev);
+ struct phy_device *phydev = priv->phydev;
+ u8 new_state = 0;
+ u8 speed = 0xff;
+
+ if (!phydev)
+ return;
+
+ /* SXGBE is not supporting auto-negotiation and
+ * half duplex mode. so, not handling duplex change
+ * in this function. only handling speed and link status
+ */
+ if (phydev->link) {
+ if (phydev->speed != priv->speed) {
+ new_state = 1;
+ switch (phydev->speed) {
+ case SPEED_10000:
+ speed = SXGBE_SPEED_10G;
+ break;
+ case SPEED_2500:
+ speed = SXGBE_SPEED_2_5G;
+ break;
+ case SPEED_1000:
+ speed = SXGBE_SPEED_1G;
+ break;
+ default:
+ netif_err(priv, link, dev,
+ "Speed (%d) not supported\n",
+ phydev->speed);
+ }
+
+ priv->speed = phydev->speed;
+ priv->hw->mac->set_speed(priv->ioaddr, speed);
+ }
+
+ if (!priv->oldlink) {
+ new_state = 1;
+ priv->oldlink = 1;
+ }
+ } else if (priv->oldlink) {
+ new_state = 1;
+ priv->oldlink = 0;
+ priv->speed = SPEED_UNKNOWN;
+ }
+
+ if (new_state & netif_msg_link(priv))
+ phy_print_status(phydev);
+}
+
+/**
+ * sxgbe_init_phy - PHY initialization
+ * @dev: net device structure
+ * Description: it initializes the driver's PHY state, and attaches the PHY
+ * to the mac driver.
+ * Return value:
+ * 0 on success
+ */
+static int sxgbe_init_phy(struct net_device *ndev)
+{
+ char phy_id_fmt[MII_BUS_ID_SIZE + 3];
+ char bus_id[MII_BUS_ID_SIZE];
+ struct phy_device *phydev;
+ struct sxgbe_priv_data *priv = netdev_priv(ndev);
+ int phy_iface = priv->plat->interface;
+
+ /* assign default link status */
+ priv->oldlink = 0;
+ priv->speed = SPEED_UNKNOWN;
+ priv->oldduplex = DUPLEX_UNKNOWN;
+
+ if (priv->plat->phy_bus_name)
+ snprintf(bus_id, MII_BUS_ID_SIZE, "%s-%x",
+ priv->plat->phy_bus_name, priv->plat->bus_id);
+ else
+ snprintf(bus_id, MII_BUS_ID_SIZE, "sxgbe-%x",
+ priv->plat->bus_id);
+
+ snprintf(phy_id_fmt, MII_BUS_ID_SIZE + 3, PHY_ID_FMT, bus_id,
+ priv->plat->phy_addr);
+ netdev_dbg(ndev, "%s: trying to attach to %s\n", __func__, phy_id_fmt);
+
+ phydev = phy_connect(ndev, phy_id_fmt, &sxgbe_adjust_link, phy_iface);
+
+ if (IS_ERR(phydev)) {
+ netdev_err(ndev, "Could not attach to PHY\n");
+ return PTR_ERR(phydev);
+ }
+
+ /* Stop Advertising 1000BASE Capability if interface is not GMII */
+ if ((phy_iface == PHY_INTERFACE_MODE_MII) ||
+ (phy_iface == PHY_INTERFACE_MODE_RMII))
+ phydev->advertising &= ~(SUPPORTED_1000baseT_Half |
+ SUPPORTED_1000baseT_Full);
+ if (phydev->phy_id == 0) {
+ phy_disconnect(phydev);
+ return -ENODEV;
+ }
+
+ netdev_dbg(ndev, "%s: attached to PHY (UID 0x%x) Link = %d\n",
+ __func__, phydev->phy_id, phydev->link);
+
+ /* save phy device in private structure */
+ priv->phydev = phydev;
+
+ return 0;
+}
+
+/**
+ * sxgbe_clear_descriptors: clear descriptors
+ * @priv: driver private structure
+ * Description: this function is called to clear the tx and rx descriptors
+ * in case of both basic and extended descriptors are used.
+ */
+static void sxgbe_clear_descriptors(struct sxgbe_priv_data *priv)
+{
+ int i, j;
+ unsigned int txsize = priv->dma_tx_size;
+ unsigned int rxsize = priv->dma_rx_size;
+
+ /* Clear the Rx/Tx descriptors */
+ for (j = 0; j < SXGBE_RX_QUEUES; j++) {
+ for (i = 0; i < rxsize; i++)
+ priv->hw->desc->init_rx_desc(&priv->rxq[j]->dma_rx[i],
+ priv->use_riwt, priv->mode,
+ (i == rxsize - 1));
+ }
+
+ for (j = 0; j < SXGBE_TX_QUEUES; j++) {
+ for (i = 0; i < txsize; i++)
+ priv->hw->desc->init_tx_desc(&priv->txq[j]->dma_tx[i]);
+ }
+}
+
+static int sxgbe_init_rx_buffers(struct net_device *dev,
+ struct sxgbe_rx_norm_desc *p, int i,
+ unsigned int dma_buf_sz,
+ struct sxgbe_rx_queue *rx_ring)
+{
+ struct sxgbe_priv_data *priv = netdev_priv(dev);
+ struct sk_buff *skb;
+
+ skb = __netdev_alloc_skb(dev, dma_buf_sz, GFP_KERNEL);
+ if (!skb) {
+ netdev_err(dev, "%s: Rx init fails; skb is NULL\n", __func__);
+ return -ENOMEM;
+ }
+ skb_reserve(skb, NET_IP_ALIGN);
+
+ rx_ring->rx_skbuff[i] = skb;
+ rx_ring->rx_skbuff_dma[i] = dma_map_single(priv->device, skb->data,
+ dma_buf_sz, DMA_FROM_DEVICE);
+
+ if (dma_mapping_error(priv->device, rx_ring->rx_skbuff_dma[i])) {
+ netdev_err(dev, "%s: DMA mapping error\n", __func__);
+ dev_kfree_skb_any(skb);
+ return -EINVAL;
+ }
+
+ p->rdes23.rx_rd_des23.buf2_addr = rx_ring->rx_skbuff_dma[i];
+
+ return 0;
+}
+/**
+ * init_tx_ring - init the TX descriptor ring
+ * @dev: net device structure
+ * @tx_ring: ring to be intialised
+ * @tx_rsize: ring size
+ * Description: this function initializes the DMA TX descriptor
+ */
+static int init_tx_ring(struct device *dev, u8 queue_no,
+ struct sxgbe_tx_queue *tx_ring, int tx_rsize)
+{
+ /* TX ring is not allcoated */
+ if (!tx_ring) {
+ dev_err(dev, "No memory for TX queue of SXGBE\n");
+ return -ENOMEM;
+ }
+
+ /* allocate memory for TX descriptors */
+ tx_ring->dma_tx = dma_zalloc_coherent(dev,
+ tx_rsize * sizeof(struct sxgbe_tx_norm_desc),
+ &tx_ring->dma_tx_phy, GFP_KERNEL);
+ if (!tx_ring->dma_tx) {
+ dev_err(dev, "No memory for TX desc of SXGBE\n");
+ return -ENOMEM;
+ }
+
+ /* allocate memory for TX skbuff array */
+ tx_ring->tx_skbuff_dma = devm_kcalloc(dev, tx_rsize,
+ sizeof(dma_addr_t), GFP_KERNEL);
+ if (!tx_ring->tx_skbuff_dma) {
+ dev_err(dev, "No memory for TX skbuffs DMA of SXGBE\n");
+ goto dmamem_err;
+ }
+
+ tx_ring->tx_skbuff = devm_kcalloc(dev, tx_rsize,
+ sizeof(struct sk_buff *), GFP_KERNEL);
+
+ if (!tx_ring->tx_skbuff) {
+ dev_err(dev, "No memory for TX skbuffs of SXGBE\n");
+ goto dmamem_err;
+ }
+
+ /* assign queue number */
+ tx_ring->queue_no = queue_no;
+
+ /* initalise counters */
+ tx_ring->dirty_tx = 0;
+ tx_ring->cur_tx = 0;
+
+ /* initalise TX queue lock */
+ spin_lock_init(&tx_ring->tx_lock);
+
+ return 0;
+
+dmamem_err:
+ dma_free_coherent(dev, tx_rsize * sizeof(struct sxgbe_tx_norm_desc),
+ tx_ring->dma_tx, tx_ring->dma_tx_phy);
+ return -ENOMEM;
+}
+
+/**
+ * free_rx_ring - free the RX descriptor ring
+ * @dev: net device structure
+ * @rx_ring: ring to be intialised
+ * @rx_rsize: ring size
+ * Description: this function initializes the DMA RX descriptor
+ */
+void free_rx_ring(struct device *dev, struct sxgbe_rx_queue *rx_ring,
+ int rx_rsize)
+{
+ dma_free_coherent(dev, rx_rsize * sizeof(struct sxgbe_rx_norm_desc),
+ rx_ring->dma_rx, rx_ring->dma_rx_phy);
+ kfree(rx_ring->rx_skbuff_dma);
+ kfree(rx_ring->rx_skbuff);
+}
+
+/**
+ * init_rx_ring - init the RX descriptor ring
+ * @dev: net device structure
+ * @rx_ring: ring to be intialised
+ * @rx_rsize: ring size
+ * Description: this function initializes the DMA RX descriptor
+ */
+static int init_rx_ring(struct net_device *dev, u8 queue_no,
+ struct sxgbe_rx_queue *rx_ring, int rx_rsize)
+{
+ struct sxgbe_priv_data *priv = netdev_priv(dev);
+ int desc_index;
+ unsigned int bfsize = 0;
+ unsigned int ret = 0;
+
+ /* Set the max buffer size according to the MTU. */
+ bfsize = ALIGN(dev->mtu + ETH_HLEN + ETH_FCS_LEN + NET_IP_ALIGN, 8);
+
+ netif_dbg(priv, probe, dev, "%s: bfsize %d\n", __func__, bfsize);
+
+ /* RX ring is not allcoated */
+ if (rx_ring == NULL) {
+ netdev_err(dev, "No memory for RX queue\n");
+ goto error;
+ }
+
+ /* assign queue number */
+ rx_ring->queue_no = queue_no;
+
+ /* allocate memory for RX descriptors */
+ rx_ring->dma_rx = dma_zalloc_coherent(priv->device,
+ rx_rsize * sizeof(struct sxgbe_rx_norm_desc),
+ &rx_ring->dma_rx_phy, GFP_KERNEL);
+
+ if (rx_ring->dma_rx == NULL)
+ goto error;
+
+ /* allocate memory for RX skbuff array */
+ rx_ring->rx_skbuff_dma = kmalloc_array(rx_rsize,
+ sizeof(dma_addr_t), GFP_KERNEL);
+ if (rx_ring->rx_skbuff_dma == NULL)
+ goto dmamem_err;
+
+ rx_ring->rx_skbuff = kmalloc_array(rx_rsize,
+ sizeof(struct sk_buff *), GFP_KERNEL);
+ if (rx_ring->rx_skbuff == NULL)
+ goto rxbuff_err;
+
+ /* initialise the buffers */
+ for (desc_index = 0; desc_index < rx_rsize; desc_index++) {
+ struct sxgbe_rx_norm_desc *p;
+ p = rx_ring->dma_rx + desc_index;
+ ret = sxgbe_init_rx_buffers(dev, p, desc_index,
+ bfsize, rx_ring);
+ if (ret)
+ goto err_init_rx_buffers;
+ }
+
+ /* initalise counters */
+ rx_ring->cur_rx = 0;
+ rx_ring->dirty_rx = (unsigned int)(desc_index - rx_rsize);
+ priv->dma_buf_sz = bfsize;
+
+ return 0;
+
+err_init_rx_buffers:
+ while (--desc_index >= 0)
+ free_rx_ring(priv->device, rx_ring, desc_index);
+ kfree(rx_ring->rx_skbuff);
+rxbuff_err:
+ kfree(rx_ring->rx_skbuff_dma);
+dmamem_err:
+ dma_free_coherent(priv->device,
+ rx_rsize * sizeof(struct sxgbe_rx_norm_desc),
+ rx_ring->dma_rx, rx_ring->dma_rx_phy);
+error:
+ return -ENOMEM;
+}
+/**
+ * free_tx_ring - free the TX descriptor ring
+ * @dev: net device structure
+ * @tx_ring: ring to be intialised
+ * @tx_rsize: ring size
+ * Description: this function initializes the DMA TX descriptor
+ */
+void free_tx_ring(struct device *dev, struct sxgbe_tx_queue *tx_ring,
+ int tx_rsize)
+{
+ dma_free_coherent(dev, tx_rsize * sizeof(struct sxgbe_tx_norm_desc),
+ tx_ring->dma_tx, tx_ring->dma_tx_phy);
+}
+
+/**
+ * init_dma_desc_rings - init the RX/TX descriptor rings
+ * @dev: net device structure
+ * Description: this function initializes the DMA RX/TX descriptors
+ * and allocates the socket buffers. It suppors the chained and ring
+ * modes.
+ */
+static int init_dma_desc_rings(struct net_device *netd)
+{
+ int queue_num, ret;
+ struct sxgbe_priv_data *priv = netdev_priv(netd);
+ int tx_rsize = priv->dma_tx_size;
+ int rx_rsize = priv->dma_rx_size;
+
+ /* Allocate memory for queue structures and TX descs */
+ SXGBE_FOR_EACH_QUEUE(SXGBE_TX_QUEUES, queue_num) {
+ ret = init_tx_ring(priv->device, queue_num,
+ priv->txq[queue_num], tx_rsize);
+ if (ret) {
+ dev_err(&netd->dev, "TX DMA ring allocation failed!\n");
+ goto txalloc_err;
+ }
+
+ /* save private pointer in each ring this
+ * pointer is needed during cleaing TX queue
+ */
+ priv->txq[queue_num]->priv_ptr = priv;
+ }
+
+ /* Allocate memory for queue structures and RX descs */
+ SXGBE_FOR_EACH_QUEUE(SXGBE_RX_QUEUES, queue_num) {
+ ret = init_rx_ring(netd, queue_num,
+ priv->rxq[queue_num], rx_rsize);
+ if (ret) {
+ netdev_err(netd, "RX DMA ring allocation failed!!\n");
+ goto rxalloc_err;
+ }
+
+ /* save private pointer in each ring this
+ * pointer is needed during cleaing TX queue
+ */
+ priv->rxq[queue_num]->priv_ptr = priv;
+ }
+
+ sxgbe_clear_descriptors(priv);
+
+ return 0;
+
+txalloc_err:
+ while (queue_num--)
+ free_tx_ring(priv->device, priv->txq[queue_num], tx_rsize);
+ return ret;
+
+rxalloc_err:
+ while (queue_num--)
+ free_rx_ring(priv->device, priv->rxq[queue_num], rx_rsize);
+ return ret;
+}
+
+static void tx_free_ring_skbufs(struct sxgbe_tx_queue *txqueue)
+{
+ int dma_desc;
+ struct sxgbe_priv_data *priv = txqueue->priv_ptr;
+ int tx_rsize = priv->dma_tx_size;
+
+ for (dma_desc = 0; dma_desc < tx_rsize; dma_desc++) {
+ struct sxgbe_tx_norm_desc *tdesc = txqueue->dma_tx + dma_desc;
+
+ if (txqueue->tx_skbuff_dma[dma_desc])
+ dma_unmap_single(priv->device,
+ txqueue->tx_skbuff_dma[dma_desc],
+ priv->hw->desc->get_tx_len(tdesc),
+ DMA_TO_DEVICE);
+
+ dev_kfree_skb_any(txqueue->tx_skbuff[dma_desc]);
+ txqueue->tx_skbuff[dma_desc] = NULL;
+ txqueue->tx_skbuff_dma[dma_desc] = 0;
+ }
+}
+
+
+static void dma_free_tx_skbufs(struct sxgbe_priv_data *priv)
+{
+ int queue_num;
+
+ SXGBE_FOR_EACH_QUEUE(SXGBE_TX_QUEUES, queue_num) {
+ struct sxgbe_tx_queue *tqueue = priv->txq[queue_num];
+ tx_free_ring_skbufs(tqueue);
+ }
+}
+
+static void free_dma_desc_resources(struct sxgbe_priv_data *priv)
+{
+ int queue_num;
+ int tx_rsize = priv->dma_tx_size;
+ int rx_rsize = priv->dma_rx_size;
+
+ /* Release the DMA TX buffers */
+ dma_free_tx_skbufs(priv);
+
+ /* Release the TX ring memory also */
+ SXGBE_FOR_EACH_QUEUE(SXGBE_TX_QUEUES, queue_num) {
+ free_tx_ring(priv->device, priv->txq[queue_num], tx_rsize);
+ }
+
+ /* Release the RX ring memory also */
+ SXGBE_FOR_EACH_QUEUE(SXGBE_RX_QUEUES, queue_num) {
+ free_rx_ring(priv->device, priv->rxq[queue_num], rx_rsize);
+ }
+}
+
+static int txring_mem_alloc(struct sxgbe_priv_data *priv)
+{
+ int queue_num;
+
+ SXGBE_FOR_EACH_QUEUE(SXGBE_TX_QUEUES, queue_num) {
+ priv->txq[queue_num] = devm_kmalloc(priv->device,
+ sizeof(struct sxgbe_tx_queue), GFP_KERNEL);
+ if (!priv->txq[queue_num]) {
+ dev_err(priv->device,
+ "No memory for TX queue of SXGBE\n");
+ return -ENOMEM;
+ }
+ }
+
+ return 0;
+}
+
+static int rxring_mem_alloc(struct sxgbe_priv_data *priv)
+{
+ int queue_num;
+
+ SXGBE_FOR_EACH_QUEUE(SXGBE_RX_QUEUES, queue_num) {
+ priv->rxq[queue_num] = devm_kmalloc(priv->device,
+ sizeof(struct sxgbe_rx_queue), GFP_KERNEL);
+ if (!priv->rxq[queue_num])
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+/**
+ * sxgbe_mtl_operation_mode - HW MTL operation mode
+ * @priv: driver private structure
+ * Description: it sets the MTL operation mode: tx/rx MTL thresholds
+ * or Store-And-Forward capability.
+ */
+static void sxgbe_mtl_operation_mode(struct sxgbe_priv_data *priv)
+{
+ int queue_num;
+
+ /* TX/RX threshold control */
+ if (likely(priv->plat->force_sf_dma_mode)) {
+ /* set TC mode for TX QUEUES */
+ SXGBE_FOR_EACH_QUEUE(priv->hw_cap.tx_mtl_queues, queue_num)
+ priv->hw->mtl->set_tx_mtl_mode(priv->ioaddr, queue_num,
+ SXGBE_MTL_SFMODE);
+ tx_tc = SXGBE_MTL_SFMODE;
+
+ /* set TC mode for RX QUEUES */
+ SXGBE_FOR_EACH_QUEUE(priv->hw_cap.rx_mtl_queues, queue_num)
+ priv->hw->mtl->set_rx_mtl_mode(priv->ioaddr, queue_num,
+ SXGBE_MTL_SFMODE);
+ rx_tc = SXGBE_MTL_SFMODE;
+ } else if (unlikely(priv->plat->force_thresh_dma_mode)) {
+ /* set TC mode for TX QUEUES */
+ SXGBE_FOR_EACH_QUEUE(priv->hw_cap.tx_mtl_queues, queue_num)
+ priv->hw->mtl->set_tx_mtl_mode(priv->ioaddr, queue_num,
+ tx_tc);
+ /* set TC mode for RX QUEUES */
+ SXGBE_FOR_EACH_QUEUE(priv->hw_cap.rx_mtl_queues, queue_num)
+ priv->hw->mtl->set_rx_mtl_mode(priv->ioaddr, queue_num,
+ rx_tc);
+ } else {
+ pr_err("ERROR: %s: Invalid TX threshold mode\n", __func__);
+ }
+}
+
+/**
+ * sxgbe_tx_queue_clean:
+ * @priv: driver private structure
+ * Description: it reclaims resources after transmission completes.
+ */
+static void sxgbe_tx_queue_clean(struct sxgbe_tx_queue *tqueue)
+{
+ struct sxgbe_priv_data *priv = tqueue->priv_ptr;
+ unsigned int tx_rsize = priv->dma_tx_size;
+ struct netdev_queue *dev_txq;
+ u8 queue_no = tqueue->queue_no;
+
+ dev_txq = netdev_get_tx_queue(priv->dev, queue_no);
+
+ spin_lock(&tqueue->tx_lock);
+
+ priv->xstats.tx_clean++;
+ while (tqueue->dirty_tx != tqueue->cur_tx) {
+ unsigned int entry = tqueue->dirty_tx % tx_rsize;
+ struct sk_buff *skb = tqueue->tx_skbuff[entry];
+ struct sxgbe_tx_norm_desc *p;
+
+ p = tqueue->dma_tx + entry;
+
+ /* Check if the descriptor is owned by the DMA. */
+ if (priv->hw->desc->get_tx_owner(p))
+ break;
+
+ if (netif_msg_tx_done(priv))
+ pr_debug("%s: curr %d, dirty %d\n",
+ __func__, tqueue->cur_tx, tqueue->dirty_tx);
+
+ if (likely(tqueue->tx_skbuff_dma[entry])) {
+ dma_unmap_single(priv->device,
+ tqueue->tx_skbuff_dma[entry],
+ priv->hw->desc->get_tx_len(p),
+ DMA_TO_DEVICE);
+ tqueue->tx_skbuff_dma[entry] = 0;
+ }
+
+ if (likely(skb)) {
+ dev_kfree_skb(skb);
+ tqueue->tx_skbuff[entry] = NULL;
+ }
+
+ priv->hw->desc->release_tx_desc(p);
+
+ tqueue->dirty_tx++;
+ }
+
+ /* wake up queue */
+ if (unlikely(netif_tx_queue_stopped(dev_txq) &&
+ sxgbe_tx_avail(tqueue, tx_rsize) > SXGBE_TX_THRESH(priv))) {
+ netif_tx_lock(priv->dev);
+ if (netif_tx_queue_stopped(dev_txq) &&
+ sxgbe_tx_avail(tqueue, tx_rsize) > SXGBE_TX_THRESH(priv)) {
+ if (netif_msg_tx_done(priv))
+ pr_debug("%s: restart transmit\n", __func__);
+ netif_tx_wake_queue(dev_txq);
+ }
+ netif_tx_unlock(priv->dev);
+ }
+
+ spin_unlock(&tqueue->tx_lock);
+}
+
+/**
+ * sxgbe_tx_clean:
+ * @priv: driver private structure
+ * Description: it reclaims resources after transmission completes.
+ */
+static void sxgbe_tx_all_clean(struct sxgbe_priv_data *priv)
+{
+ u8 queue_num;
+
+ SXGBE_FOR_EACH_QUEUE(SXGBE_TX_QUEUES, queue_num) {
+ struct sxgbe_tx_queue *tqueue = priv->txq[queue_num];
+ sxgbe_tx_queue_clean(tqueue);
+ }
+}
+
+/**
+ * sxgbe_restart_tx_queue: irq tx error mng function
+ * @priv: driver private structure
+ * Description: it cleans the descriptors and restarts the transmission
+ * in case of errors.
+ */
+static void sxgbe_restart_tx_queue(struct sxgbe_priv_data *priv, int queue_num)
+{
+ struct sxgbe_tx_queue *tx_ring = priv->txq[queue_num];
+ struct netdev_queue *dev_txq = netdev_get_tx_queue(priv->dev,
+ queue_num);
+
+ /* stop the queue */
+ netif_tx_stop_queue(dev_txq);
+
+ /* stop the tx dma */
+ priv->hw->dma->stop_tx_queue(priv->ioaddr, queue_num);
+
+ /* free the skbuffs of the ring */
+ tx_free_ring_skbufs(tx_ring);
+
+ /* initalise counters */
+ tx_ring->cur_tx = 0;
+ tx_ring->dirty_tx = 0;
+
+ /* start the tx dma */
+ priv->hw->dma->start_tx_queue(priv->ioaddr, queue_num);
+
+ priv->dev->stats.tx_errors++;
+
+ /* wakeup the queue */
+ netif_tx_wake_queue(dev_txq);
+}
+
+/**
+ * sxgbe_reset_all_tx_queues: irq tx error mng function
+ * @priv: driver private structure
+ * Description: it cleans all the descriptors and
+ * restarts the transmission on all queues in case of errors.
+ */
+static void sxgbe_reset_all_tx_queues(struct sxgbe_priv_data *priv)
+{
+ int queue_num;
+
+ /* On TX timeout of net device, resetting of all queues
+ * may not be proper way, revisit this later if needed
+ */
+ SXGBE_FOR_EACH_QUEUE(SXGBE_TX_QUEUES, queue_num)
+ sxgbe_restart_tx_queue(priv, queue_num);
+}
+
+/**
+ * sxgbe_get_hw_features: get XMAC capabilities from the HW cap. register.
+ * @priv: driver private structure
+ * Description:
+ * new GMAC chip generations have a new register to indicate the
+ * presence of the optional feature/functions.
+ * This can be also used to override the value passed through the
+ * platform and necessary for old MAC10/100 and GMAC chips.
+ */
+static int sxgbe_get_hw_features(struct sxgbe_priv_data * const priv)
+{
+ int rval = 0;
+ struct sxgbe_hw_features *features = &priv->hw_cap;
+
+ /* Read First Capability Register CAP[0] */
+ rval = priv->hw->mac->get_hw_feature(priv->ioaddr, 0);
+ if (rval) {
+ features->gmii_1000mbps = SXGBE_HW_FEAT_GMII(rval);
+ features->vlan_hfilter = SXGBE_HW_FEAT_VLAN_HASH_FILTER(rval);
+ features->sma_mdio = SXGBE_HW_FEAT_SMA(rval);
+ features->pmt_remote_wake_up =
+ SXGBE_HW_FEAT_PMT_TEMOTE_WOP(rval);
+ features->pmt_magic_frame = SXGBE_HW_FEAT_PMT_MAGIC_PKT(rval);
+ features->rmon = SXGBE_HW_FEAT_RMON(rval);
+ features->arp_offload = SXGBE_HW_FEAT_ARP_OFFLOAD(rval);
+ features->atime_stamp = SXGBE_HW_FEAT_IEEE1500_2008(rval);
+ features->tx_csum_offload =
+ SXGBE_HW_FEAT_TX_CSUM_OFFLOAD(rval);
+ features->rx_csum_offload =
+ SXGBE_HW_FEAT_RX_CSUM_OFFLOAD(rval);
+ features->multi_macaddr = SXGBE_HW_FEAT_MACADDR_COUNT(rval);
+ features->tstamp_srcselect = SXGBE_HW_FEAT_TSTMAP_SRC(rval);
+ features->sa_vlan_insert = SXGBE_HW_FEAT_SRCADDR_VLAN(rval);
+ }
+ /* Read First Capability Register CAP[1] */
+ rval = priv->hw->mac->get_hw_feature(priv->ioaddr, 1);
+ if (rval) {
+ features->rxfifo_size = SXGBE_HW_FEAT_RX_FIFO_SIZE(rval);
+ features->txfifo_size = SXGBE_HW_FEAT_TX_FIFO_SIZE(rval);
+ features->atstmap_hword = SXGBE_HW_FEAT_TX_FIFO_SIZE(rval);
+ features->dcb_enable = SXGBE_HW_FEAT_DCB(rval);
+ features->splithead_enable = SXGBE_HW_FEAT_SPLIT_HDR(rval);
+ features->tcpseg_offload = SXGBE_HW_FEAT_TSO(rval);
+ features->debug_mem = SXGBE_HW_FEAT_DEBUG_MEM_IFACE(rval);
+ features->rss_enable = SXGBE_HW_FEAT_RSS(rval);
+ features->hash_tsize = SXGBE_HW_FEAT_HASH_TABLE_SIZE(rval);
+ features->l3l4_filer_size = SXGBE_HW_FEAT_L3L4_FILTER_NUM(rval);
+ }
+
+ /* Read First Capability Register CAP[2] */
+ rval = priv->hw->mac->get_hw_feature(priv->ioaddr, 2);
+ if (rval) {
+ features->rx_mtl_queues = SXGBE_HW_FEAT_RX_MTL_QUEUES(rval);
+ features->tx_mtl_queues = SXGBE_HW_FEAT_TX_MTL_QUEUES(rval);
+ features->rx_dma_channels = SXGBE_HW_FEAT_RX_DMA_CHANNELS(rval);
+ features->tx_dma_channels = SXGBE_HW_FEAT_TX_DMA_CHANNELS(rval);
+ features->pps_output_count = SXGBE_HW_FEAT_PPS_OUTPUTS(rval);
+ features->aux_input_count = SXGBE_HW_FEAT_AUX_SNAPSHOTS(rval);
+ }
+
+ return rval;
+}
+
+/**
+ * sxgbe_check_ether_addr: check if the MAC addr is valid
+ * @priv: driver private structure
+ * Description:
+ * it is to verify if the MAC address is valid, in case of failures it
+ * generates a random MAC address
+ */
+static void sxgbe_check_ether_addr(struct sxgbe_priv_data *priv)
+{
+ if (!is_valid_ether_addr(priv->dev->dev_addr)) {
+ priv->hw->mac->get_umac_addr((void __iomem *)
+ priv->dev->base_addr,
+ priv->dev->dev_addr, 0);
+ if (!is_valid_ether_addr(priv->dev->dev_addr))
+ eth_hw_addr_random(priv->dev);
+ }
+ dev_info(priv->device, "device MAC address %pM\n",
+ priv->dev->dev_addr);
+}
+
+/**
+ * sxgbe_init_dma_engine: DMA init.
+ * @priv: driver private structure
+ * Description:
+ * It inits the DMA invoking the specific SXGBE callback.
+ * Some DMA parameters can be passed from the platform;
+ * in case of these are not passed a default is kept for the MAC or GMAC.
+ */
+static int sxgbe_init_dma_engine(struct sxgbe_priv_data *priv)
+{
+ int pbl = DEFAULT_DMA_PBL, fixed_burst = 0, burst_map = 0;
+ int adv_addr_mode = 1;
+ int queue_num;
+
+ if (priv->plat->dma_cfg) {
+ pbl = priv->plat->dma_cfg->pbl;
+ fixed_burst = priv->plat->dma_cfg->fixed_burst;
+ burst_map = priv->plat->dma_cfg->burst_map;
+ adv_addr_mode = priv->plat->dma_cfg->adv_addr_mode;
+ }
+
+ SXGBE_FOR_EACH_QUEUE(SXGBE_TX_QUEUES, queue_num)
+ priv->hw->dma->cha_init(priv->ioaddr, queue_num,
+ fixed_burst, pbl,
+ (priv->txq[queue_num])->dma_tx_phy,
+ (priv->rxq[queue_num])->dma_rx_phy,
+ priv->dma_tx_size, priv->dma_rx_size);
+
+ return priv->hw->dma->init(priv->ioaddr, fixed_burst,
+ burst_map, adv_addr_mode);
+}
+
+/**
+ * sxgbe_init_mtl_engine: MTL init.
+ * @priv: driver private structure
+ * Description:
+ * It inits the MTL invoking the specific SXGBE callback.
+ */
+static void sxgbe_init_mtl_engine(struct sxgbe_priv_data *priv)
+{
+ int queue_num;
+
+ SXGBE_FOR_EACH_QUEUE(SXGBE_TX_QUEUES, queue_num) {
+ priv->hw->mtl->mtl_set_txfifosize(priv->ioaddr, queue_num,
+ priv->hw_cap.tx_mtl_qsize);
+ priv->hw->mtl->mtl_enable_txqueue(priv->ioaddr, queue_num);
+ }
+}
+
+/**
+ * sxgbe_disable_mtl_engine: MTL disable.
+ * @priv: driver private structure
+ * Description:
+ * It disables the MTL queues by invoking the specific SXGBE callback.
+ */
+static void sxgbe_disable_mtl_engine(struct sxgbe_priv_data *priv)
+{
+ int queue_num;
+
+ SXGBE_FOR_EACH_QUEUE(SXGBE_TX_QUEUES, queue_num)
+ priv->hw->mtl->mtl_disable_txqueue(priv->ioaddr, queue_num);
+}
+
+
+/**
+ * sxgbe_tx_timer: mitigation sw timer for tx.
+ * @data: data pointer
+ * Description:
+ * This is the timer handler to directly invoke the sxgbe_tx_clean.
+ */
+static void sxgbe_tx_timer(unsigned long data)
+{
+ struct sxgbe_tx_queue *p = (struct sxgbe_tx_queue *)data;
+ sxgbe_tx_queue_clean(p);
+}
+
+/**
+ * sxgbe_init_tx_coalesce: init tx mitigation options.
+ * @priv: driver private structure
+ * Description:
+ * This inits the transmit coalesce parameters: i.e. timer rate,
+ * timer handler and default threshold used for enabling the
+ * interrupt on completion bit.
+ */
+static void sxgbe_tx_init_coalesce(struct sxgbe_priv_data *priv)
+{
+ u8 queue_num;
+
+ SXGBE_FOR_EACH_QUEUE(SXGBE_TX_QUEUES, queue_num) {
+ struct sxgbe_tx_queue *p = priv->txq[queue_num];
+ p->tx_coal_frames = SXGBE_TX_FRAMES;
+ p->tx_coal_timer = SXGBE_COAL_TX_TIMER;
+ init_timer(&p->txtimer);
+ p->txtimer.expires = SXGBE_COAL_TIMER(p->tx_coal_timer);
+ p->txtimer.data = (unsigned long)&priv->txq[queue_num];
+ p->txtimer.function = sxgbe_tx_timer;
+ add_timer(&p->txtimer);
+ }
+}
+
+static void sxgbe_tx_del_timer(struct sxgbe_priv_data *priv)
+{
+ u8 queue_num;
+
+ SXGBE_FOR_EACH_QUEUE(SXGBE_TX_QUEUES, queue_num) {
+ struct sxgbe_tx_queue *p = priv->txq[queue_num];
+ del_timer_sync(&p->txtimer);
+ }
+}
+
+/**
+ * sxgbe_open - open entry point of the driver
+ * @dev : pointer to the device structure.
+ * Description:
+ * This function is the open entry point of the driver.
+ * Return value:
+ * 0 on success and an appropriate (-)ve integer as defined in errno.h
+ * file on failure.
+ */
+static int sxgbe_open(struct net_device *dev)
+{
+ struct sxgbe_priv_data *priv = netdev_priv(dev);
+ int ret, queue_num;
+
+ clk_prepare_enable(priv->sxgbe_clk);
+
+ sxgbe_check_ether_addr(priv);
+
+ /* Init the phy */
+ ret = sxgbe_init_phy(dev);
+ if (ret) {
+ netdev_err(dev, "%s: Cannot attach to PHY (error: %d)\n",
+ __func__, ret);
+ goto phy_error;
+ }
+
+ /* Create and initialize the TX/RX descriptors chains. */
+ priv->dma_tx_size = SXGBE_ALIGN(dma_txsize);
+ priv->dma_rx_size = SXGBE_ALIGN(dma_rxsize);
+ priv->dma_buf_sz = SXGBE_ALIGN(buf_sz);
+ init_dma_desc_rings(dev);
+
+ /* DMA initialization and SW reset */
+ ret = sxgbe_init_dma_engine(priv);
+ if (ret < 0) {
+ netdev_err(dev, "%s: DMA initialization failed\n", __func__);
+ goto init_error;
+ }
+
+ /* MTL initialization */
+ sxgbe_init_mtl_engine(priv);
+
+ /* Copy the MAC addr into the HW */
+ priv->hw->mac->set_umac_addr(priv->ioaddr, dev->dev_addr, 0);
+
+ /* Initialize the MAC Core */
+ priv->hw->mac->core_init(priv->ioaddr);
+
+ /* Request the IRQ lines */
+ ret = devm_request_irq(priv->device, dev->irq, sxgbe_common_interrupt,
+ IRQF_SHARED, dev->name, dev);
+ if (unlikely(ret < 0)) {
+ netdev_err(dev, "%s: ERROR: allocating the IRQ %d (error: %d)\n",
+ __func__, dev->irq, ret);
+ goto init_error;
+ }
+
+ /* Request TX DMA irq lines */
+ SXGBE_FOR_EACH_QUEUE(SXGBE_TX_QUEUES, queue_num) {
+ ret = devm_request_irq(priv->device,
+ (priv->txq[queue_num])->irq_no,
+ sxgbe_tx_interrupt, 0,
+ dev->name, priv->txq[queue_num]);
+ if (unlikely(ret < 0)) {
+ netdev_err(dev, "%s: ERROR: allocating TX IRQ %d (error: %d)\n",
+ __func__, dev->irq, ret);
+ goto init_error;
+ }
+ }
+
+ /* Request RX DMA irq lines */
+ SXGBE_FOR_EACH_QUEUE(SXGBE_RX_QUEUES, queue_num) {
+ ret = devm_request_irq(priv->device,
+ (priv->rxq[queue_num])->irq_no,
+ sxgbe_rx_interrupt, 0,
+ dev->name, priv->rxq[queue_num]);
+ if (unlikely(ret < 0)) {
+ netdev_err(dev, "%s: ERROR: allocating TX IRQ %d (error: %d)\n",
+ __func__, dev->irq, ret);
+ goto init_error;
+ }
+ }
+
+ /* Enable the MAC Rx/Tx */
+ priv->hw->mac->enable_tx(priv->ioaddr, true);
+ priv->hw->mac->enable_rx(priv->ioaddr, true);
+
+ /* Set the HW DMA mode and the COE */
+ sxgbe_mtl_operation_mode(priv);
+
+ /* Extra statistics */
+ memset(&priv->xstats, 0, sizeof(struct sxgbe_extra_stats));
+
+ priv->xstats.tx_threshold = tx_tc;
+ priv->xstats.rx_threshold = rx_tc;
+
+ /* Start the ball rolling... */
+ netdev_dbg(dev, "DMA RX/TX processes started...\n");
+ priv->hw->dma->start_tx(priv->ioaddr, SXGBE_TX_QUEUES);
+ priv->hw->dma->start_rx(priv->ioaddr, SXGBE_RX_QUEUES);
+
+ if (priv->phydev)
+ phy_start(priv->phydev);
+
+ /* initalise TX coalesce parameters */
+ sxgbe_tx_init_coalesce(priv);
+
+ if ((priv->use_riwt) && (priv->hw->dma->rx_watchdog)) {
+ priv->rx_riwt = SXGBE_MAX_DMA_RIWT;
+ priv->hw->dma->rx_watchdog(priv->ioaddr, SXGBE_MAX_DMA_RIWT);
+ }
+
+ napi_enable(&priv->napi);
+ netif_start_queue(dev);
+
+ return 0;
+
+init_error:
+ free_dma_desc_resources(priv);
+ if (priv->phydev)
+ phy_disconnect(priv->phydev);
+phy_error:
+ clk_disable_unprepare(priv->sxgbe_clk);
+
+ return ret;
+}
+
+/**
+ * sxgbe_release - close entry point of the driver
+ * @dev : device pointer.
+ * Description:
+ * This is the stop entry point of the driver.
+ */
+static int sxgbe_release(struct net_device *dev)
+{
+ struct sxgbe_priv_data *priv = netdev_priv(dev);
+
+ /* Stop and disconnect the PHY */
+ if (priv->phydev) {
+ phy_stop(priv->phydev);
+ phy_disconnect(priv->phydev);
+ priv->phydev = NULL;
+ }
+
+ netif_tx_stop_all_queues(dev);
+
+ napi_disable(&priv->napi);
+
+ /* delete TX timers */
+ sxgbe_tx_del_timer(priv);
+
+ /* Stop TX/RX DMA and clear the descriptors */
+ priv->hw->dma->stop_tx(priv->ioaddr, SXGBE_TX_QUEUES);
+ priv->hw->dma->stop_rx(priv->ioaddr, SXGBE_RX_QUEUES);
+
+ /* disable MTL queue */
+ sxgbe_disable_mtl_engine(priv);
+
+ /* Release and free the Rx/Tx resources */
+ free_dma_desc_resources(priv);
+
+ /* Disable the MAC Rx/Tx */
+ priv->hw->mac->enable_tx(priv->ioaddr, false);
+ priv->hw->mac->enable_rx(priv->ioaddr, false);
+
+ netif_carrier_off(dev);
+
+ clk_disable_unprepare(priv->sxgbe_clk);
+
+ return 0;
+}
+
+/**
+ * sxgbe_xmit: Tx entry point of the driver
+ * @skb : the socket buffer
+ * @dev : device pointer
+ * Description : this is the tx entry point of the driver.
+ * It programs the chain or the ring and supports oversized frames
+ * and SG feature.
+ */
+static netdev_tx_t sxgbe_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ unsigned int entry, frag_num;
+ struct netdev_queue *dev_txq;
+ unsigned txq_index = skb_get_queue_mapping(skb);
+ struct sxgbe_priv_data *priv = netdev_priv(dev);
+ unsigned int tx_rsize = priv->dma_tx_size;
+ struct sxgbe_tx_queue *tqueue = priv->txq[txq_index];
+ struct sxgbe_tx_norm_desc *tx_desc, *first_desc;
+ int nr_frags = skb_shinfo(skb)->nr_frags;
+ int no_pagedlen = skb_headlen(skb);
+ int is_jumbo = 0;
+
+ /* get the TX queue handle */
+ dev_txq = netdev_get_tx_queue(dev, txq_index);
+
+ /* get the spinlock */
+ spin_lock(&tqueue->tx_lock);
+
+ if (unlikely(sxgbe_tx_avail(tqueue, tx_rsize) < nr_frags + 1)) {
+ if (!netif_tx_queue_stopped(dev_txq)) {
+ netif_tx_stop_queue(dev_txq);
+ netdev_err(dev, "%s: Tx Ring is full when %d queue is awake\n",
+ __func__, txq_index);
+ }
+ /* release the spin lock in case of BUSY */
+ spin_unlock(&tqueue->tx_lock);
+ return NETDEV_TX_BUSY;
+ }
+
+ entry = tqueue->cur_tx % tx_rsize;
+ tx_desc = tqueue->dma_tx + entry;
+
+ first_desc = tx_desc;
+
+ /* save the skb address */
+ tqueue->tx_skbuff[entry] = skb;
+
+ if (!is_jumbo) {
+ tx_desc->tdes01 = dma_map_single(priv->device, skb->data,
+ no_pagedlen, DMA_TO_DEVICE);
+ if (dma_mapping_error(priv->device, tx_desc->tdes01))
+ pr_err("%s: TX dma mapping failed!!\n", __func__);
+
+ priv->hw->desc->prepare_tx_desc(tx_desc, 1, no_pagedlen,
+ no_pagedlen);
+ }
+
+ for (frag_num = 0; frag_num < nr_frags; frag_num++) {
+ const skb_frag_t *frag = &skb_shinfo(skb)->frags[frag_num];
+ int len = skb_frag_size(frag);
+ entry = (++tqueue->cur_tx) % tx_rsize;
+ tx_desc = tqueue->dma_tx + entry;
+ tx_desc->tdes01 = skb_frag_dma_map(priv->device, frag, 0, len,
+ DMA_TO_DEVICE);
+
+ tqueue->tx_skbuff_dma[entry] = tx_desc->tdes01;
+ tqueue->tx_skbuff[entry] = NULL;
+
+ /* prepare the descriptor */
+ priv->hw->desc->prepare_tx_desc(tx_desc, 0, len,
+ len);
+ /* memory barrier to flush descriptor */
+ wmb();
+
+ /* set the owner */
+ priv->hw->desc->set_tx_owner(tx_desc);
+ }
+
+ /* close the descriptors */
+ priv->hw->desc->close_tx_desc(tx_desc);
+
+ /* memory barrier to flush descriptor */
+ wmb();
+
+ tqueue->tx_count_frames += nr_frags + 1;
+ if (tqueue->tx_count_frames > tqueue->tx_coal_frames) {
+ priv->hw->desc->clear_tx_ic(tx_desc);
+ priv->xstats.tx_reset_ic_bit++;
+ mod_timer(&tqueue->txtimer,
+ SXGBE_COAL_TIMER(tqueue->tx_coal_timer));
+ } else {
+ tqueue->tx_count_frames = 0;
+ }
+
+ /* set owner for first desc */
+ priv->hw->desc->set_tx_owner(first_desc);
+
+ /* memory barrier to flush descriptor */
+ wmb();
+
+ tqueue->cur_tx++;
+
+ /* display current ring */
+ if (netif_msg_pktdata(priv)) {
+ netdev_dbg(dev, "%s: curr %d dirty=%d entry=%d, first=%p, nfrags=%d\n",
+ __func__, (tqueue->cur_tx % tx_rsize),
+ (tqueue->dirty_tx % tx_rsize), entry,
+ first_desc, nr_frags);
+
+ pr_debug(">>> tx frame to be transmitted:\n");
+ print_pkt(skb->data, skb->len);
+ }
+
+ if (unlikely(sxgbe_tx_avail(tqueue, tx_rsize) <= (MAX_SKB_FRAGS + 1))) {
+ netif_dbg(priv, hw, dev, "%s: stop transmitted packets\n",
+ __func__);
+ netif_tx_stop_queue(dev_txq);
+ }
+
+ dev->stats.tx_bytes += skb->len;
+
+ if (unlikely((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) &&
+ tqueue->hwts_tx_en)) {
+ /* declare that device is doing timestamping */
+ skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
+ priv->hw->desc->tx_enable_tstamp(first_desc);
+ }
+
+ if (!tqueue->hwts_tx_en)
+ skb_tx_timestamp(skb);
+
+ priv->hw->dma->enable_dma_transmission(priv->ioaddr, txq_index);
+
+ spin_unlock(&tqueue->tx_lock);
+
+ return NETDEV_TX_OK;
+}
+
+/**
+ * sxgbe_rx_refill: refill used skb preallocated buffers
+ * @priv: driver private structure
+ * Description : this is to reallocate the skb for the reception process
+ * that is based on zero-copy.
+ */
+static void sxgbe_rx_refill(struct sxgbe_priv_data *priv)
+{
+ unsigned int rxsize = priv->dma_rx_size;
+ int bfsize = priv->dma_buf_sz;
+ u8 qnum = priv->cur_rx_qnum;
+
+ for (; priv->rxq[qnum]->cur_rx - priv->rxq[qnum]->dirty_rx > 0;
+ priv->rxq[qnum]->dirty_rx++) {
+ unsigned int entry = priv->rxq[qnum]->dirty_rx % rxsize;
+ struct sxgbe_rx_norm_desc *p;
+
+ p = priv->rxq[qnum]->dma_rx + entry;
+
+ if (likely(priv->rxq[qnum]->rx_skbuff[entry] == NULL)) {
+ struct sk_buff *skb;
+
+ skb = netdev_alloc_skb_ip_align(priv->dev, bfsize);
+
+ if (unlikely(skb == NULL))
+ break;
+
+ priv->rxq[qnum]->rx_skbuff[entry] = skb;
+ priv->rxq[qnum]->rx_skbuff_dma[entry] =
+ dma_map_single(priv->device, skb->data, bfsize,
+ DMA_FROM_DEVICE);
+
+ p->rdes23.rx_rd_des23.buf2_addr =
+ priv->rxq[qnum]->rx_skbuff_dma[entry];
+ }
+
+ /* Added memory barrier for RX descriptor modification */
+ wmb();
+ priv->hw->desc->set_rx_owner(p);
+ /* Added memory barrier for RX descriptor modification */
+ wmb();
+ }
+}
+
+/**
+ * sxgbe_rx: receive the frames from the remote host
+ * @priv: driver private structure
+ * @limit: napi bugget.
+ * Description : this the function called by the napi poll method.
+ * It gets all the frames inside the ring.
+ */
+static int sxgbe_rx(struct sxgbe_priv_data *priv, int limit)
+{
+ u8 qnum = priv->cur_rx_qnum;
+ unsigned int rxsize = priv->dma_rx_size;
+ unsigned int entry = priv->rxq[qnum]->cur_rx;
+ unsigned int next_entry = 0;
+ unsigned int count = 0;
+
+ while (count < limit) {
+ struct sxgbe_rx_norm_desc *p;
+ struct sk_buff *skb;
+ int frame_len;
+
+ p = priv->rxq[qnum]->dma_rx + entry;
+
+ if (priv->hw->desc->get_rx_owner(p))
+ break;
+
+ count++;
+
+ next_entry = (++priv->rxq[qnum]->cur_rx) % rxsize;
+ prefetch(priv->rxq[qnum]->dma_rx + next_entry);
+
+ /*TO DO read the status of the incoming frame */
+
+ skb = priv->rxq[qnum]->rx_skbuff[entry];
+
+ if (unlikely(!skb))
+ netdev_err(priv->dev, "rx descriptor is not consistent\n");
+
+ prefetch(skb->data - NET_IP_ALIGN);
+ priv->rxq[qnum]->rx_skbuff[entry] = NULL;
+
+ frame_len = priv->hw->desc->get_rx_frame_len(p);
+
+ skb_put(skb, frame_len);
+
+ netif_receive_skb(skb);
+
+ entry = next_entry;
+ }
+
+ sxgbe_rx_refill(priv);
+
+ return count;
+}
+
+/**
+ * sxgbe_poll - sxgbe poll method (NAPI)
+ * @napi : pointer to the napi structure.
+ * @budget : maximum number of packets that the current CPU can receive from
+ * all interfaces.
+ * Description :
+ * To look at the incoming frames and clear the tx resources.
+ */
+static int sxgbe_poll(struct napi_struct *napi, int budget)
+{
+ struct sxgbe_priv_data *priv = container_of(napi,
+ struct sxgbe_priv_data, napi);
+ int work_done = 0;
+ u8 qnum = priv->cur_rx_qnum;
+
+ priv->xstats.napi_poll++;
+ /* first, clean the tx queues */
+ sxgbe_tx_all_clean(priv);
+
+ work_done = sxgbe_rx(priv, budget);
+ if (work_done < budget) {
+ napi_complete(napi);
+ priv->hw->dma->enable_dma_irq(priv->ioaddr, qnum);
+ }
+
+ return work_done;
+}
+
+/**
+ * sxgbe_tx_timeout
+ * @dev : Pointer to net device structure
+ * Description: this function is called when a packet transmission fails to
+ * complete within a reasonable time. The driver will mark the error in the
+ * netdev structure and arrange for the device to be reset to a sane state
+ * in order to transmit a new packet.
+ */
+static void sxgbe_tx_timeout(struct net_device *dev)
+{
+ struct sxgbe_priv_data *priv = netdev_priv(dev);
+ sxgbe_reset_all_tx_queues(priv);
+}
+
+/**
+ * sxgbe_common_interrupt - main ISR
+ * @irq: interrupt number.
+ * @dev_id: to pass the net device pointer.
+ * Description: this is the main driver interrupt service routine.
+ * It calls the DMA ISR and also the core ISR to manage PMT, MMC, LPI
+ * interrupts.
+ */
+static irqreturn_t sxgbe_common_interrupt(int irq, void *dev_id)
+{
+ return IRQ_HANDLED;
+}
+
+/**
+ * sxgbe_tx_interrupt - TX DMA ISR
+ * @irq: interrupt number.
+ * @dev_id: to pass the net device pointer.
+ * Description: this is the tx dma interrupt service routine.
+ */
+static irqreturn_t sxgbe_tx_interrupt(int irq, void *dev_id)
+{
+ int status;
+ struct sxgbe_tx_queue *txq = (struct sxgbe_tx_queue *)dev_id;
+ struct sxgbe_priv_data *priv = txq->priv_ptr;
+
+ /* get the channel status */
+ status = priv->hw->dma->tx_dma_int_status(priv->ioaddr, txq->queue_no,
+ &priv->xstats);
+ /* check for normal path */
+ if (likely((status & handle_tx)))
+ napi_schedule(&priv->napi);
+
+ /* check for unrecoverable error */
+ if (unlikely((status & tx_hard_error)))
+ sxgbe_restart_tx_queue(priv, txq->queue_no);
+
+ /* check for TC configuration change */
+ if (unlikely((status & tx_bump_tc) &&
+ (tx_tc != SXGBE_MTL_SFMODE) && (tx_tc < 512))) {
+ /* step of TX TC is 32 till 128, otherwise 64 */
+ tx_tc += (tx_tc < 128) ? 32 : 64;
+ priv->hw->mtl->set_tx_mtl_mode(priv->ioaddr,
+ txq->queue_no, tx_tc);
+ priv->xstats.tx_threshold = tx_tc;
+ }
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * sxgbe_rx_interrupt - RX DMA ISR
+ * @irq: interrupt number.
+ * @dev_id: to pass the net device pointer.
+ * Description: this is the rx dma interrupt service routine.
+ */
+static irqreturn_t sxgbe_rx_interrupt(int irq, void *dev_id)
+{
+ int status;
+ struct sxgbe_rx_queue *rxq = (struct sxgbe_rx_queue *)dev_id;
+ struct sxgbe_priv_data *priv = rxq->priv_ptr;
+
+ /* get the channel status */
+ status = priv->hw->dma->rx_dma_int_status(priv->ioaddr, rxq->queue_no,
+ &priv->xstats);
+
+ if (likely((status & handle_rx) && (napi_schedule_prep(&priv->napi)))) {
+ priv->hw->dma->disable_dma_irq(priv->ioaddr, rxq->queue_no);
+ __napi_schedule(&priv->napi);
+ }
+
+ /* check for TC configuration change */
+ if (unlikely((status & rx_bump_tc) &&
+ (rx_tc != SXGBE_MTL_SFMODE) && (rx_tc < 128))) {
+ /* step of TC is 32 */
+ rx_tc += 32;
+ priv->hw->mtl->set_rx_mtl_mode(priv->ioaddr,
+ rxq->queue_no, rx_tc);
+ priv->xstats.rx_threshold = rx_tc;
+ }
+
+ return IRQ_HANDLED;
+}
+
+/* sxgbe_get_stats64 - entry point to see statistical information of device
+ * @dev : device pointer.
+ * @stats : pointer to hold all the statistical information of device.
+ * Description:
+ * This function is a driver entry point whenever ifconfig command gets
+ * executed to see device statistics. Statistics are number of
+ * bytes sent or received, errors occured etc.
+ * Return value:
+ * This function returns various statistical information of device.
+ */
+static struct rtnl_link_stats64 *sxgbe_get_stats64(struct net_device *dev,
+ struct rtnl_link_stats64 *stats)
+{
+ struct sxgbe_priv_data *priv = netdev_priv(dev);
+ void __iomem *ioaddr = priv->ioaddr;
+ u64 count;
+
+ spin_lock(&priv->stats_lock);
+ /* Freeze the counter registers before reading value otherwise it may
+ * get updated by hardware while we are reading them
+ */
+ writel(SXGBE_MMC_CTRL_CNT_FRZ, ioaddr + SXGBE_MMC_CTL_REG);
+
+ stats->rx_bytes = readl(ioaddr + SXGBE_MMC_RXOCTETLO_GCNT_REG);
+ stats->rx_bytes |= (u64)(readl(ioaddr + SXGBE_MMC_RXOCTETHI_GCNT_REG))
+ << 32;
+ stats->rx_packets = readl(ioaddr + SXGBE_MMC_RXFRAMELO_GBCNT_REG);
+ stats->rx_packets |=
+ (u64)(readl(ioaddr + SXGBE_MMC_RXFRAMEHI_GBCNT_REG)) << 32;
+ stats->multicast = readl(ioaddr + SXGBE_MMC_RXMULTILO_GCNT_REG);
+ stats->multicast |= (u64)(readl(ioaddr + SXGBE_MMC_RXMULTIHI_GCNT_REG))
+ << 32;
+ stats->rx_crc_errors = readl(ioaddr + SXGBE_MMC_RXCRCERRLO_REG);
+ stats->rx_crc_errors |= (u64)(readl(ioaddr + SXGBE_MMC_RXCRCERRHI_REG))
+ << 32;
+ stats->rx_length_errors = readl(ioaddr + SXGBE_MMC_RXLENERRLO_REG);
+ stats->rx_length_errors |=
+ (u64)(readl(ioaddr + SXGBE_MMC_RXLENERRHI_REG)) << 32;
+ stats->rx_missed_errors = readl(ioaddr +
+ SXGBE_MMC_RXFIFOOVERFLOWLO_GBCNT_REG);
+ stats->rx_missed_errors |= (u64)(readl(ioaddr +
+ SXGBE_MMC_RXFIFOOVERFLOWHI_GBCNT_REG));
+
+ stats->tx_bytes = readl(ioaddr + SXGBE_MMC_TXOCTETLO_GCNT_REG);
+ stats->tx_bytes |=
+ (u64)(readl(ioaddr + SXGBE_MMC_TXOCTETHI_GCNT_REG)) << 32;
+
+ count = readl(ioaddr + SXGBE_MMC_TXFRAMELO_GBCNT_REG);
+ count |= (u64)(readl(ioaddr + SXGBE_MMC_TXFRAMEHI_GBCNT_REG)) << 32;
+ stats->tx_errors = readl(ioaddr + SXGBE_MMC_TXFRAMELO_GCNT_REG);
+ stats->tx_errors |= (u64)(readl(ioaddr + SXGBE_MMC_TXFRAMEHI_GCNT_REG))
+ << 32;
+ stats->tx_errors = count - stats->tx_errors;
+ stats->tx_packets = count;
+ stats->tx_fifo_errors = readl(ioaddr + SXGBE_MMC_TXUFLWLO_GBCNT_REG);
+ stats->tx_fifo_errors |= (u64)(readl(ioaddr +
+ SXGBE_MMC_TXUFLWHI_GBCNT_REG));
+
+ writel(0, ioaddr + SXGBE_MMC_CTL_REG);
+ spin_unlock(&priv->stats_lock);
+ return stats;
+}
+
+/* sxgbe_set_features - entry point to set offload features of the device.
+ * @dev : device pointer.
+ * @features : features which are required to be set.
+ * Description:
+ * This function is a driver entry point and called by Linux kernel whenever
+ * any device features are set or reset by user.
+ * Return value:
+ * This function returns 0 after setting or resetting device features.
+ */
+static int sxgbe_set_features(struct net_device *dev,
+ netdev_features_t features)
+{
+ struct sxgbe_priv_data *priv = netdev_priv(dev);
+ netdev_features_t changed = dev->features ^ features;
+ u32 ctrl;
+
+ if (changed & NETIF_F_RXCSUM) {
+ ctrl = readl(priv->ioaddr + SXGBE_CORE_RX_CONFIG_REG);
+ if (features & NETIF_F_RXCSUM)
+ ctrl |= SXGBE_RX_CSUMOFFLOAD_ENABLE;
+ else
+ ctrl &= ~SXGBE_RX_CSUMOFFLOAD_ENABLE;
+ writel(ctrl, priv->ioaddr + SXGBE_CORE_RX_CONFIG_REG);
+ }
+
+ return 0;
+}
+
+/* sxgbe_change_mtu - entry point to change MTU size for the device.
+ * @dev : device pointer.
+ * @new_mtu : the new MTU size for the device.
+ * Description: the Maximum Transfer Unit (MTU) is used by the network layer
+ * to drive packet transmission. Ethernet has an MTU of 1500 octets
+ * (ETH_DATA_LEN). This value can be changed with ifconfig.
+ * Return value:
+ * 0 on success and an appropriate (-)ve integer as defined in errno.h
+ * file on failure.
+ */
+static int sxgbe_change_mtu(struct net_device *dev, int new_mtu)
+{
+ /* RFC 791, page 25, "Every internet module must be able to forward
+ * a datagram of 68 octets without further fragmentation."
+ */
+ if (new_mtu < MIN_MTU || (new_mtu > MAX_MTU)) {
+ netdev_err(dev, "invalid MTU, MTU should be in between %d and %d\n",
+ MIN_MTU, MAX_MTU);
+ return -EINVAL;
+ }
+
+ /* Return if the buffer sizes will not change */
+ if (dev->mtu == new_mtu)
+ return 0;
+
+ dev->mtu = new_mtu;
+
+ if (!netif_running(dev))
+ return 0;
+
+ /* Recevice ring buffer size is needed to be set based on MTU. If MTU is
+ * changed then reinitilisation of the receive ring buffers need to be
+ * done. Hence bring interface down and bring interface back up
+ */
+ sxgbe_release(dev);
+ return sxgbe_open(dev);
+}
+
+static void sxgbe_set_umac_addr(void __iomem *ioaddr, unsigned char *addr,
+ unsigned int reg_n)
+{
+ unsigned long data;
+
+ data = (addr[5] << 8) | addr[4];
+ /* For MAC Addr registers se have to set the Address Enable (AE)
+ * bit that has no effect on the High Reg 0 where the bit 31 (MO)
+ * is RO.
+ */
+ writel(data | SXGBE_HI_REG_AE, ioaddr + SXGBE_ADDR_HIGH(reg_n));
+ data = (addr[3] << 24) | (addr[2] << 16) | (addr[1] << 8) | addr[0];
+ writel(data, ioaddr + SXGBE_ADDR_LOW(reg_n));
+}
+
+/**
+ * sxgbe_set_rx_mode - entry point for setting different receive mode of
+ * a device. unicast, multicast addressing
+ * @dev : pointer to the device structure
+ * Description:
+ * This function is a driver entry point which gets called by the kernel
+ * whenever different receive mode like unicast, multicast and promiscuous
+ * must be enabled/disabled.
+ * Return value:
+ * void.
+ */
+static void sxgbe_set_rx_mode(struct net_device *dev)
+{
+ struct sxgbe_priv_data *priv = netdev_priv(dev);
+ void __iomem *ioaddr = (void __iomem *)priv->ioaddr;
+ unsigned int value = 0;
+ u32 mc_filter[2];
+ struct netdev_hw_addr *ha;
+ int reg = 1;
+
+ netdev_dbg(dev, "%s: # mcasts %d, # unicast %d\n",
+ __func__, netdev_mc_count(dev), netdev_uc_count(dev));
+
+ if (dev->flags & IFF_PROMISC) {
+ value = SXGBE_FRAME_FILTER_PR;
+ } else if ((netdev_mc_count(dev) > SXGBE_HASH_TABLE_SIZE) ||
+ (dev->flags & IFF_ALLMULTI)) {
+ value = SXGBE_FRAME_FILTER_PM; /* pass all multi */
+ writel(0xffffffff, ioaddr + SXGBE_HASH_HIGH);
+ writel(0xffffffff, ioaddr + SXGBE_HASH_LOW);
+ } else if (!netdev_mc_empty(dev)) {
+ /* Hash filter for multicast */
+ value = SXGBE_FRAME_FILTER_HMC;
+
+ memset(mc_filter, 0, sizeof(mc_filter));
+ netdev_for_each_mc_addr(ha, dev) {
+ /* The upper 6 bits of the calculated CRC are used to
+ * index the contens of the hash table
+ */
+ int bit_nr = bitrev32(~crc32_le(~0, ha->addr, 6)) >> 26;
+ /* The most significant bit determines the register to
+ * use (H/L) while the other 5 bits determine the bit
+ * within the register.
+ */
+ mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
+ }
+ writel(mc_filter[0], ioaddr + SXGBE_HASH_LOW);
+ writel(mc_filter[1], ioaddr + SXGBE_HASH_HIGH);
+ }
+
+ /* Handle multiple unicast addresses (perfect filtering) */
+ if (netdev_uc_count(dev) > SXGBE_MAX_PERFECT_ADDRESSES)
+ /* Switch to promiscuous mode if more than 16 addrs
+ * are required
+ */
+ value |= SXGBE_FRAME_FILTER_PR;
+ else {
+ netdev_for_each_uc_addr(ha, dev) {
+ sxgbe_set_umac_addr(ioaddr, ha->addr, reg);
+ reg++;
+ }
+ }
+#ifdef FRAME_FILTER_DEBUG
+ /* Enable Receive all mode (to debug filtering_fail errors) */
+ value |= SXGBE_FRAME_FILTER_RA;
+#endif
+ writel(value, ioaddr + SXGBE_FRAME_FILTER);
+
+ netdev_dbg(dev, "Filter: 0x%08x\n\tHash: HI 0x%08x, LO 0x%08x\n",
+ readl(ioaddr + SXGBE_FRAME_FILTER),
+ readl(ioaddr + SXGBE_HASH_HIGH),
+ readl(ioaddr + SXGBE_HASH_LOW));
+}
+
+/**
+ * sxgbe_config - entry point for changing configuration mode passed on by
+ * ifconfig
+ * @dev : pointer to the device structure
+ * @map : pointer to the device mapping structure
+ * Description:
+ * This function is a driver entry point which gets called by the kernel
+ * whenever some device configuration is changed.
+ * Return value:
+ * This function returns 0 if success and appropriate error otherwise.
+ */
+static int sxgbe_config(struct net_device *dev, struct ifmap *map)
+{
+ /* Can't act on a running interface */
+ if (dev->flags & IFF_UP)
+ return -EBUSY;
+
+ /* Don't allow changing the I/O address */
+ if (map->base_addr != dev->base_addr) {
+ netdev_warn(dev, "can't change I/O address\n");
+ return -EOPNOTSUPP;
+ }
+
+ /* Don't allow changing the IRQ */
+ if (map->irq != dev->irq) {
+ netdev_warn(dev, "not change IRQ number %d\n", dev->irq);
+ return -EOPNOTSUPP;
+ }
+
+ return 0;
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+/**
+ * sxgbe_poll_controller - entry point for polling receive by device
+ * @dev : pointer to the device structure
+ * Description:
+ * This function is used by NETCONSOLE and other diagnostic tools
+ * to allow network I/O with interrupts disabled.
+ * Return value:
+ * Void.
+ */
+static void sxgbe_poll_controller(struct net_device *dev)
+{
+ disable_irq(dev->irq);
+ sxgbe_rx_interrupt(dev->irq, dev);
+ enable_irq(dev->irq);
+}
+#endif
+
+/* sxgbe_ioctl - Entry point for the Ioctl
+ * @dev: Device pointer.
+ * @rq: An IOCTL specefic structure, that can contain a pointer to
+ * a proprietary structure used to pass information to the driver.
+ * @cmd: IOCTL command
+ * Description:
+ * Currently it supports the phy_mii_ioctl(...) and HW time stamping.
+ */
+static int sxgbe_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+{
+ struct sxgbe_priv_data *priv = netdev_priv(dev);
+ int ret = -EOPNOTSUPP;
+
+ if (!netif_running(dev))
+ return -EINVAL;
+
+ switch (cmd) {
+ case SIOCGMIIPHY:
+ case SIOCGMIIREG:
+ case SIOCSMIIREG:
+ if (!priv->phydev)
+ return -EINVAL;
+ ret = phy_mii_ioctl(priv->phydev, rq, cmd);
+ break;
+ default:
+ break;
+ }
+
+ return ret;
+}
+
+static const struct net_device_ops sxgbe_netdev_ops = {
+ .ndo_open = sxgbe_open,
+ .ndo_start_xmit = sxgbe_xmit,
+ .ndo_stop = sxgbe_release,
+ .ndo_get_stats64 = sxgbe_get_stats64,
+ .ndo_change_mtu = sxgbe_change_mtu,
+ .ndo_set_features = sxgbe_set_features,
+ .ndo_set_rx_mode = sxgbe_set_rx_mode,
+ .ndo_tx_timeout = sxgbe_tx_timeout,
+ .ndo_do_ioctl = sxgbe_ioctl,
+ .ndo_set_config = sxgbe_config,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = sxgbe_poll_controller,
+#endif
+ .ndo_set_mac_address = eth_mac_addr,
+};
+
+/* Get the hardware ops */
+void sxgbe_get_ops(struct sxgbe_ops * const ops_ptr)
+{
+ ops_ptr->mac = sxgbe_get_core_ops();
+ ops_ptr->desc = sxgbe_get_desc_ops();
+ ops_ptr->dma = sxgbe_get_dma_ops();
+ ops_ptr->mtl = sxgbe_get_mtl_ops();
+
+ /* set the MDIO communication Address/Data regisers */
+ ops_ptr->mii.addr = SXGBE_MDIO_SCMD_ADD_REG;
+ ops_ptr->mii.data = SXGBE_MDIO_SCMD_DATA_REG;
+
+ /* Assigning the default link settings
+ * no SXGBE defined default values to be set in registers,
+ * so assigning as 0 for port and duplex
+ */
+ ops_ptr->link.port = 0;
+ ops_ptr->link.duplex = 0;
+ ops_ptr->link.speed = SXGBE_SPEED_10G;
+}
+
+/**
+ * sxgbe_hw_init - Init the GMAC device
+ * @priv: driver private structure
+ * Description: this function checks the HW capability
+ * (if supported) and sets the driver's features.
+ */
+static int sxgbe_hw_init(struct sxgbe_priv_data * const priv)
+{
+ u32 ctrl_ids;
+
+ /* get the hardware ops */
+ sxgbe_get_ops(priv->hw);
+
+ /* get the controller id */
+ ctrl_ids = priv->hw->mac->get_controller_version(priv->ioaddr);
+ priv->hw->ctrl_uid = (ctrl_ids & 0x00ff0000) >> 16;
+ priv->hw->ctrl_id = (ctrl_ids & 0x000000ff);
+ pr_info("user ID: 0x%x, Controller ID: 0x%x\n",
+ priv->hw->ctrl_uid, priv->hw->ctrl_id);
+
+ /* get the H/W features */
+ if (!sxgbe_get_hw_features(priv))
+ pr_info("Hardware features not found\n");
+
+ if (priv->hw_cap.tx_csum_offload)
+ pr_info("TX Checksum offload supported\n");
+
+ if (priv->hw_cap.rx_csum_offload)
+ pr_info("RX Checksum offload supported\n");
+
+ return 0;
+}
+
+/**
+ * sxgbe_dvr_probe
+ * @device: device pointer
+ * @plat_dat: platform data pointer
+ * @addr: iobase memory address
+ * Description: this is the main probe function used to
+ * call the alloc_etherdev, allocate the priv structure.
+ */
+struct sxgbe_priv_data *sxgbe_dvr_probe(struct device *device,
+ struct sxgbe_plat_data *plat_dat,
+ void __iomem *addr)
+{
+ int ret = 0;
+ struct net_device *ndev = NULL;
+ struct sxgbe_priv_data *priv;
+
+ ndev = alloc_etherdev_mqs(sizeof(struct sxgbe_priv_data),
+ SXGBE_TX_QUEUES, SXGBE_RX_QUEUES);
+ if (!ndev)
+ return NULL;
+
+ SET_NETDEV_DEV(ndev, device);
+
+ priv = netdev_priv(ndev);
+ priv->device = device;
+ priv->dev = ndev;
+
+ ether_setup(ndev);
+
+ sxgbe_set_ethtool_ops(ndev);
+ priv->pause = pause;
+ priv->plat = plat_dat;
+ priv->ioaddr = addr;
+ priv->dev->base_addr = (unsigned long)addr;
+
+ /* Verify driver arguments */
+ sxgbe_verify_args();
+
+ /* Override with kernel parameters if supplied
+ */
+ if ((sxgbe_phyaddr >= 0) && (sxgbe_phyaddr <= 31))
+ priv->plat->phy_addr = sxgbe_phyaddr;
+
+ /* Init MAC and get the capabilities */
+ ret = sxgbe_hw_init(priv);
+ if (ret)
+ goto error_free_netdev;
+
+ /* allocate memory resources for Descriptor rings */
+ ret = txring_mem_alloc(priv);
+ if (ret)
+ goto error_free_netdev;
+
+ ret = rxring_mem_alloc(priv);
+ if (ret)
+ goto error_free_netdev;
+
+ ndev->netdev_ops = &sxgbe_netdev_ops;
+
+ ndev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM;
+ ndev->features |= ndev->hw_features | NETIF_F_HIGHDMA;
+ ndev->watchdog_timeo = msecs_to_jiffies(watchdog);
+
+ /* assign filtering support */
+ ndev->priv_flags |= IFF_UNICAST_FLT;
+
+ priv->msg_enable = netif_msg_init(debug, default_msg_level);
+
+ if (flow_ctrl)
+ priv->flow_ctrl = SXGBE_FLOW_AUTO; /* RX/TX pause on */
+
+ /* Rx Watchdog is available, enable depend on platform data */
+ if (!priv->plat->riwt_off) {
+ priv->use_riwt = 1;
+ pr_info("Enable RX Mitigation via HW Watchdog Timer\n");
+ }
+
+ netif_napi_add(ndev, &priv->napi, sxgbe_poll, 64);
+
+ spin_lock_init(&priv->stats_lock);
+
+ ret = register_netdev(ndev);
+ if (ret) {
+ pr_err("%s: ERROR %i registering the device\n", __func__, ret);
+ goto error_netdev_register;
+ }
+
+ priv->sxgbe_clk = clk_get(priv->device, SXGBE_RESOURCE_NAME);
+ if (IS_ERR(priv->sxgbe_clk)) {
+ netdev_warn(ndev, "%s: warning: cannot get CSR clock\n",
+ __func__);
+ goto error_clk_get;
+ }
+
+ /* If a specific clk_csr value is passed from the platform
+ * this means that the CSR Clock Range selection cannot be
+ * changed at run-time and it is fixed. Viceversa the driver'll try to
+ * set the MDC clock dynamically according to the csr actual
+ * clock input.
+ */
+ if (!priv->plat->clk_csr)
+ sxgbe_clk_csr_set(priv);
+ else
+ priv->clk_csr = priv->plat->clk_csr;
+
+ /* MDIO bus Registration */
+ ret = sxgbe_mdio_register(ndev);
+ if (ret < 0) {
+ netdev_dbg(ndev, "%s: MDIO bus (id: %d) registration failed\n",
+ __func__, priv->plat->bus_id);
+ goto error_mdio_register;
+ }
+
+ sxgbe_check_ether_addr(priv);
+
+ return priv;
+
+error_mdio_register:
+ clk_put(priv->sxgbe_clk);
+error_clk_get:
+ unregister_netdev(ndev);
+error_netdev_register:
+ netif_napi_del(&priv->napi);
+error_free_netdev:
+ free_netdev(ndev);
+
+ return NULL;
+}
+
+/**
+ * sxgbe_dvr_remove
+ * @ndev: net device pointer
+ * Description: this function resets the TX/RX processes, disables the MAC RX/TX
+ * changes the link status, releases the DMA descriptor rings.
+ */
+int sxgbe_dvr_remove(struct net_device *ndev)
+{
+ struct sxgbe_priv_data *priv = netdev_priv(ndev);
+
+ netdev_info(ndev, "%s: removing driver\n", __func__);
+
+ priv->hw->dma->stop_rx(priv->ioaddr, SXGBE_RX_QUEUES);
+ priv->hw->dma->stop_tx(priv->ioaddr, SXGBE_TX_QUEUES);
+
+ priv->hw->mac->enable_tx(priv->ioaddr, false);
+ priv->hw->mac->enable_rx(priv->ioaddr, false);
+
+ sxgbe_mdio_unregister(ndev);
+
+ netif_carrier_off(ndev);
+
+ unregister_netdev(ndev);
+
+ free_netdev(ndev);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+int sxgbe_suspend(struct net_device *ndev)
+{
+ return 0;
+}
+
+int sxgbe_resume(struct net_device *ndev)
+{
+ return 0;
+}
+
+int sxgbe_freeze(struct net_device *ndev)
+{
+ return -ENOSYS;
+}
+
+int sxgbe_restore(struct net_device *ndev)
+{
+ return -ENOSYS;
+}
+#endif /* CONFIG_PM */
+
+/* Driver is configured as Platform driver */
+static int __init sxgbe_init(void)
+{
+ int ret;
+
+ ret = sxgbe_register_platform();
+ if (ret)
+ goto err;
+ return 0;
+err:
+ pr_err("driver registration failed\n");
+ return ret;
+}
+
+static void __exit sxgbe_exit(void)
+{
+ sxgbe_unregister_platform();
+}
+
+module_init(sxgbe_init);
+module_exit(sxgbe_exit);
+
+#ifndef MODULE
+static int __init sxgbe_cmdline_opt(char *str)
+{
+ return 0;
+}
+
+__setup("sxgbeeth=", sxgbe_cmdline_opt);
+#endif /* MODULE */
+
+
+
+MODULE_DESCRIPTION("SAMSUNG 10G/2.5G/1G Ethernet PLATFORM driver");
+
+MODULE_PARM_DESC(watchdog, "Transmit timeout in milliseconds (default 5s)");
+MODULE_PARM_DESC(debug, "Message Level (-1: default, 0: no output, 16: all)");
+MODULE_PARM_DESC(sxgbe_phyaddr, "Physical device address");
+MODULE_PARM_DESC(dma_txsize, "Number of descriptors in the per channel TX list");
+MODULE_PARM_DESC(dma_rxsize, "Number of descriptors in the per channel RX list");
+MODULE_PARM_DESC(flow_ctrl, "Flow control ability [on/off]");
+MODULE_PARM_DESC(pause, "Flow Control Pause Time");
+MODULE_PARM_DESC(tx_tc, "TX MTL threshold control value");
+MODULE_PARM_DESC(rx_tc, "RX MTL threshold control value");
+MODULE_PARM_DESC(buf_sz, "DMA buffer size");
+
+MODULE_AUTHOR("Siva Reddy Kallam <siva.kallam@samsung.com>");
+MODULE_AUTHOR("ByungHo An <bh74.an@samsung.com>");
+MODULE_AUTHOR("Girish K S <ks.giri@samsung.com>");
+MODULE_AUTHOR("Vipul Pandya <vipul.pandya@samsung.com>");
+
+MODULE_LICENSE("GPL");
new file mode 100644
@@ -0,0 +1,274 @@
+/* 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.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/io.h>
+#include <linux/mii.h>
+#include <linux/netdevice.h>
+#include <linux/platform_device.h>
+#include <linux/phy.h>
+#include <linux/slab.h>
+#include <linux/sxgbe_platform.h>
+
+#include "sxgbe_common.h"
+#include "sxgbe_reg.h"
+
+#define SXGBE_SMA_WRITE_CMD 0x01 /* write command */
+#define SXGBE_SMA_PREAD_CMD 0x02 /* post read increament address */
+#define SXGBE_SMA_READ_CMD 0x03 /* read command */
+#define SXGBE_SMA_SKIP_ADDRFRM 0x00040000 /* skip the address frame */
+#define SXGBE_MII_BUSY 0x00800000 /* mii busy */
+
+static int sxgbe_mdio_busy_wait(void __iomem *ioaddr, unsigned int mii_data)
+{
+ unsigned long cur_time;
+ unsigned long fin_time = jiffies + 3 * HZ; /* 30 ms */
+
+ do {
+ cur_time = jiffies;
+ if (readl(ioaddr + mii_data) & SXGBE_MII_BUSY)
+ cpu_relax();
+ else
+ return 0;
+ } while (!time_after_eq(cur_time, fin_time));
+
+ return -EBUSY;
+}
+
+/**
+ * sxgbe_mdio_read
+ * @bus: points to the mii_bus structure
+ * @phyaddr: address of phy port
+ * @phyreg: address of register with in phy register
+ * Description: this function used for C45 and C22 MDIO Read
+ */
+static int sxgbe_mdio_read(struct mii_bus *bus, int phyaddr, int phyreg)
+{
+ struct net_device *ndev = bus->priv;
+ struct sxgbe_priv_data *priv = netdev_priv(ndev);
+ u32 devaddr, reg_val;
+ u32 mii_addr = priv->hw->mii.addr;
+ u32 mii_data = priv->hw->mii.data;
+
+ /* check for busy wait */
+ if (sxgbe_mdio_busy_wait(priv->ioaddr, mii_data))
+ return -EBUSY;
+
+ if (phyreg & MII_ADDR_C45) {
+ devaddr = (phyreg >> 16) & 0x1F;
+ /* set mdio address register */
+ reg_val = (phyaddr << 16) | (devaddr << 21) | (phyreg & 0xFFFF);
+ writel(reg_val, priv->ioaddr + mii_addr);
+
+ /* set mdio control/data register */
+ reg_val = ((SXGBE_SMA_READ_CMD << 16) | SXGBE_SMA_SKIP_ADDRFRM |
+ ((priv->clk_csr & 0x7) << 19) | SXGBE_MII_BUSY);
+ writel(reg_val, priv->ioaddr + mii_data);
+ } else {
+ /* configure the port for C22
+ * ports 0-3 only supports C22
+ */
+ if (phyaddr >= 4)
+ return -ENODEV;
+ writel((1 << phyaddr),
+ priv->ioaddr + SXGBE_MDIO_CLAUSE22_PORT_REG);
+ /* set mdio address register */
+ reg_val = (phyaddr << 16) | (phyreg & 0x1F);
+ writel(reg_val, priv->ioaddr + mii_addr);
+
+ /* set mdio control/data register */
+ reg_val = ((SXGBE_SMA_READ_CMD << 16) | SXGBE_SMA_SKIP_ADDRFRM |
+ ((priv->clk_csr & 0x7) << 19) | SXGBE_MII_BUSY);
+ writel(reg_val, priv->ioaddr + mii_data);
+ }
+
+ /* wait till operation succeds */
+ if (sxgbe_mdio_busy_wait(priv->ioaddr, mii_data))
+ return -EBUSY;
+
+ /* read and return the data from mmi Data register */
+ reg_val = readl(priv->ioaddr + mii_data) & 0xFFFF;
+ return reg_val;
+}
+/**
+ * sxgbe_mdio_write
+ * @bus: points to the mii_bus structure
+ * @phyaddr: address of phy port
+ * @phyreg: address of phy registers
+ * @phydata: data to be written into phy register
+ * Description: this function is used for C45 and C22 MDIO write
+ */
+static int sxgbe_mdio_write(struct mii_bus *bus, int phyaddr, int phyreg,
+ u16 phydata)
+{
+ struct net_device *ndev = bus->priv;
+ struct sxgbe_priv_data *priv = netdev_priv(ndev);
+ u32 devaddr, reg_val;
+ u32 mii_addr = priv->hw->mii.addr;
+ u32 mii_data = priv->hw->mii.data;
+
+ /* check for busy wait */
+ if (sxgbe_mdio_busy_wait(priv->ioaddr, mii_data))
+ return -EBUSY;
+
+ if (phyreg & MII_ADDR_C45) {
+ devaddr = (phyreg >> 16) & 0x1F;
+ /* set mdio address register */
+ reg_val = (phyaddr << 16) | (devaddr << 21) | (phyreg & 0xFFFF);
+ writel(reg_val, priv->ioaddr + mii_addr);
+
+ /* set mdio control/data register */
+ reg_val = ((SXGBE_SMA_WRITE_CMD << 16) |
+ SXGBE_SMA_SKIP_ADDRFRM |
+ ((priv->clk_csr & 0x7) << 19) | SXGBE_MII_BUSY);
+ reg_val |= phydata;
+
+ writel(reg_val, priv->ioaddr + mii_data);
+ } else {
+ /* configure the port for C22
+ * ports 0-3 only supports C22
+ */
+ if (phyaddr >= 4)
+ return -ENODEV;
+
+ writel((1 << phyaddr),
+ priv->ioaddr + SXGBE_MDIO_CLAUSE22_PORT_REG);
+
+ /* set mdio address register */
+ reg_val = (phyaddr << 16) | (phyreg & 0x1F);
+ writel(reg_val, priv->ioaddr + mii_addr);
+
+ /* set mdio control/data register */
+ reg_val = ((SXGBE_SMA_WRITE_CMD << 16) |
+ SXGBE_SMA_SKIP_ADDRFRM |
+ ((priv->clk_csr & 0x7) << 19) | SXGBE_MII_BUSY);
+ reg_val |= phydata;
+ writel(reg_val, priv->ioaddr + mii_data);
+ }
+
+ /* wait till operation succeds */
+ if (sxgbe_mdio_busy_wait(priv->ioaddr, mii_data))
+ return -EBUSY;
+
+ return 0;
+}
+
+int sxgbe_mdio_register(struct net_device *ndev)
+{
+ int err, phy_addr, act;
+ int *irqlist;
+ u8 phy_found = 0;
+ struct mii_bus *mdio_bus;
+ struct sxgbe_priv_data *priv = netdev_priv(ndev);
+ struct sxgbe_mdio_bus_data *mdio_data = priv->plat->mdio_bus_data;
+
+ /* allocate the new mdio bus */
+ mdio_bus = mdiobus_alloc();
+ if (!mdio_bus) {
+ netdev_err(ndev, "%s: mii bus allocation failed\n", __func__);
+ return -ENOMEM;
+ }
+
+ if (mdio_data->irqs)
+ irqlist = mdio_data->irqs;
+ else
+ irqlist = priv->mii_irq;
+
+ /* assign mii bus fields */
+ mdio_bus->name = "samsxgbe";
+ mdio_bus->read = &sxgbe_mdio_read;
+ mdio_bus->write = &sxgbe_mdio_write;
+ snprintf(mdio_bus->id, MII_BUS_ID_SIZE, "%s-%x",
+ mdio_bus->name, priv->plat->bus_id);
+ mdio_bus->priv = ndev;
+ mdio_bus->phy_mask = mdio_data->phy_mask;
+ mdio_bus->parent = priv->device;
+
+ /* register with kernel subsystem */
+ err = mdiobus_register(mdio_bus);
+ if (err != 0) {
+ netdev_err(ndev, "mdiobus register failed\n");
+ goto mdiobus_err;
+ }
+
+ for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) {
+ struct phy_device *phy = mdio_bus->phy_map[phy_addr];
+ if (phy) {
+ char irq_num[4];
+ char *irq_str;
+ /* If an IRQ was provided to be assigned after
+ * the bus probe, do it here.
+ */
+ if ((mdio_data->irqs == NULL) &&
+ (mdio_data->probed_phy_irq > 0)) {
+ irqlist[phy_addr] = mdio_data->probed_phy_irq;
+ phy->irq = mdio_data->probed_phy_irq;
+ }
+
+ /* If we're going to bind the MAC to this PHY bus,
+ * and no PHY number was provided to the MAC,
+ * use the one probed here.
+ */
+ if (priv->plat->phy_addr == -1)
+ priv->plat->phy_addr = phy_addr;
+
+ act = (priv->plat->phy_addr == phy_addr);
+ switch (phy->irq) {
+ case PHY_POLL:
+ irq_str = "POLL";
+ break;
+ case PHY_IGNORE_INTERRUPT:
+ irq_str = "IGNORE";
+ break;
+ default:
+ sprintf(irq_num, "%d", phy->irq);
+ irq_str = irq_num;
+ break;
+ }
+ netdev_info(ndev, "PHY ID %08x at %d IRQ %s (%s)%s\n",
+ phy->phy_id, phy_addr, irq_str,
+ dev_name(&phy->dev), act ? " active" : "");
+ phy_found = 1;
+ }
+ }
+
+ if (!phy_found) {
+ netdev_err(ndev, "PHY not found\n");
+ mdiobus_unregister(mdio_bus);
+ mdiobus_free(mdio_bus);
+ return -ENODEV;
+ }
+
+ priv->mii = mdio_bus;
+
+ return 0;
+
+mdiobus_err:
+ mdiobus_free(mdio_bus);
+ return err;
+}
+
+int sxgbe_mdio_unregister(struct net_device *ndev)
+{
+ struct sxgbe_priv_data *priv = netdev_priv(ndev);
+
+ if (!priv->mii)
+ return 0;
+
+ mdiobus_unregister(priv->mii);
+ priv->mii->priv = NULL;
+ mdiobus_free(priv->mii);
+ priv->mii = NULL;
+
+ return 0;
+}
new file mode 100644
@@ -0,0 +1,241 @@
+/* 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.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/io.h>
+#include <linux/errno.h>
+#include <linux/export.h>
+#include <linux/jiffies.h>
+
+#include "sxgbe_mtl.h"
+#include "sxgbe_reg.h"
+
+static void sxgbe_mtl_init(void __iomem *ioaddr, unsigned int etsalg,
+ unsigned int raa)
+{
+ u32 reg_val;
+ reg_val = readl(ioaddr + SXGBE_MTL_OP_MODE_REG);
+ reg_val &= ETS_RST;
+
+ /* ETS Algorith */
+ switch (etsalg & SXGBE_MTL_OPMODE_ESTMASK) {
+ case ETS_WRR:
+ reg_val &= ETS_WRR;
+ break;
+ case ETS_WFQ:
+ reg_val |= ETS_WFQ;
+ break;
+ case ETS_DWRR:
+ reg_val |= ETS_DWRR;
+ break;
+ }
+ writel(reg_val, ioaddr + SXGBE_MTL_OP_MODE_REG);
+
+ switch (raa & SXGBE_MTL_OPMODE_RAAMASK) {
+ case RAA_SP:
+ reg_val &= RAA_SP;
+ break;
+ case RAA_WSP:
+ reg_val |= RAA_WSP;
+ break;
+ }
+ writel(reg_val, ioaddr + SXGBE_MTL_OP_MODE_REG);
+}
+
+/* For Dynamic DMA channel mapping for Rx queue */
+static void sxgbe_mtl_dma_dm_rxqueue(void __iomem *ioaddr)
+{
+ writel(RX_QUEUE_DYNAMIC, ioaddr + SXGBE_MTL_RXQ_DMAMAP0_REG);
+ writel(RX_QUEUE_DYNAMIC, ioaddr + SXGBE_MTL_RXQ_DMAMAP1_REG);
+ writel(RX_QUEUE_DYNAMIC, ioaddr + SXGBE_MTL_RXQ_DMAMAP2_REG);
+}
+
+static void sxgbe_mtl_set_txfifosize(void __iomem *ioaddr, int queue_num,
+ int queue_fifo)
+{
+ u32 fifo_bits, reg_val;
+ /* 0 means 256 bytes */
+ fifo_bits = (queue_fifo / SXGBE_MTL_TX_FIFO_DIV)-1;
+ reg_val = readl(ioaddr + SXGBE_MTL_TXQ_OPMODE_REG(queue_num));
+ reg_val |= (fifo_bits << SXGBE_MTL_FIFO_LSHIFT);
+ writel(reg_val, ioaddr + SXGBE_MTL_TXQ_OPMODE_REG(queue_num));
+}
+
+static void sxgbe_mtl_set_rxfifosize(void __iomem *ioaddr, int queue_num,
+ int queue_fifo)
+{
+ u32 fifo_bits, reg_val;
+ /* 0 means 256 bytes */
+ fifo_bits = (queue_fifo / SXGBE_MTL_RX_FIFO_DIV)-1;
+ reg_val = readl(ioaddr + SXGBE_MTL_RXQ_OPMODE_REG(queue_num));
+ reg_val |= (fifo_bits << SXGBE_MTL_FIFO_LSHIFT);
+ writel(reg_val, ioaddr + SXGBE_MTL_RXQ_OPMODE_REG(queue_num));
+}
+
+static void sxgbe_mtl_enable_txqueue(void __iomem *ioaddr, int queue_num)
+{
+ u32 reg_val;
+ reg_val = readl(ioaddr + SXGBE_MTL_TXQ_OPMODE_REG(queue_num));
+ reg_val |= SXGBE_MTL_ENABLE_QUEUE;
+ writel(reg_val, ioaddr + SXGBE_MTL_TXQ_OPMODE_REG(queue_num));
+}
+
+static void sxgbe_mtl_disable_txqueue(void __iomem *ioaddr, int queue_num)
+{
+ u32 reg_val;
+ reg_val = readl(ioaddr + SXGBE_MTL_TXQ_OPMODE_REG(queue_num));
+ reg_val &= ~SXGBE_MTL_ENABLE_QUEUE;
+ writel(reg_val, ioaddr + SXGBE_MTL_TXQ_OPMODE_REG(queue_num));
+}
+
+static void sxgbe_mtl_fc_active(void __iomem *ioaddr, int queue_num,
+ int threshold)
+{
+ u32 reg_val;
+ reg_val = readl(ioaddr + SXGBE_MTL_RXQ_OPMODE_REG(queue_num));
+ reg_val &= ~(SXGBE_MTL_FCMASK << RX_FC_ACTIVE);
+ reg_val |= (threshold << RX_FC_ACTIVE);
+
+ writel(reg_val, ioaddr + SXGBE_MTL_RXQ_OPMODE_REG(queue_num));
+}
+
+static void sxgbe_mtl_fc_enable(void __iomem *ioaddr, int queue_num)
+{
+ u32 reg_val;
+ reg_val = readl(ioaddr + SXGBE_MTL_RXQ_OPMODE_REG(queue_num));
+ reg_val |= SXGBE_MTL_ENABLE_FC;
+ writel(reg_val, ioaddr + SXGBE_MTL_RXQ_OPMODE_REG(queue_num));
+}
+
+static void sxgbe_mtl_fc_deactive(void __iomem *ioaddr, int queue_num,
+ int threshold)
+{
+ u32 reg_val;
+ reg_val = readl(ioaddr + SXGBE_MTL_RXQ_OPMODE_REG(queue_num));
+ reg_val &= ~(SXGBE_MTL_FCMASK << RX_FC_DEACTIVE);
+ reg_val |= (threshold << RX_FC_DEACTIVE);
+
+ writel(reg_val, ioaddr + SXGBE_MTL_RXQ_OPMODE_REG(queue_num));
+}
+
+static void sxgbe_mtl_fep_enable(void __iomem *ioaddr, int queue_num)
+{
+ u32 reg_val;
+ reg_val = readl(ioaddr + SXGBE_MTL_RXQ_OPMODE_REG(queue_num));
+ reg_val |= SXGBE_MTL_RXQ_OP_FEP;
+
+ writel(reg_val, ioaddr + SXGBE_MTL_RXQ_OPMODE_REG(queue_num));
+}
+
+static void sxgbe_mtl_fep_disable(void __iomem *ioaddr, int queue_num)
+{
+ u32 reg_val;
+ reg_val = readl(ioaddr + SXGBE_MTL_RXQ_OPMODE_REG(queue_num));
+ reg_val &= ~(SXGBE_MTL_RXQ_OP_FEP);
+
+ writel(reg_val, ioaddr + SXGBE_MTL_RXQ_OPMODE_REG(queue_num));
+}
+
+static void sxgbe_mtl_fup_enable(void __iomem *ioaddr, int queue_num)
+{
+ u32 reg_val;
+ reg_val = readl(ioaddr + SXGBE_MTL_RXQ_OPMODE_REG(queue_num));
+ reg_val |= SXGBE_MTL_RXQ_OP_FUP;
+
+ writel(reg_val, ioaddr + SXGBE_MTL_RXQ_OPMODE_REG(queue_num));
+}
+
+static void sxgbe_mtl_fup_disable(void __iomem *ioaddr, int queue_num)
+{
+ u32 reg_val;
+ reg_val = readl(ioaddr + SXGBE_MTL_RXQ_OPMODE_REG(queue_num));
+ reg_val &= ~(SXGBE_MTL_RXQ_OP_FUP);
+
+ writel(reg_val, ioaddr + SXGBE_MTL_RXQ_OPMODE_REG(queue_num));
+}
+
+
+static void sxgbe_set_tx_mtl_mode(void __iomem *ioaddr, int queue_num,
+ int tx_mode)
+{
+ u32 reg_val;
+
+ reg_val = readl(ioaddr + SXGBE_MTL_TXQ_OPMODE_REG(queue_num));
+ /* TX specific MTL mode settings */
+ if (tx_mode == SXGBE_MTL_SFMODE) {
+ reg_val |= SXGBE_MTL_SFMODE;
+ } else {
+ /* set the TTC values */
+ if (tx_mode <= 64)
+ reg_val |= MTL_CONTROL_TTC_64;
+ else if (tx_mode <= 96)
+ reg_val |= MTL_CONTROL_TTC_96;
+ else if (tx_mode <= 128)
+ reg_val |= MTL_CONTROL_TTC_128;
+ else if (tx_mode <= 192)
+ reg_val |= MTL_CONTROL_TTC_192;
+ else if (tx_mode <= 256)
+ reg_val |= MTL_CONTROL_TTC_256;
+ else if (tx_mode <= 384)
+ reg_val |= MTL_CONTROL_TTC_384;
+ else
+ reg_val |= MTL_CONTROL_TTC_512;
+ }
+
+ /* write into TXQ operation register */
+ writel(reg_val, ioaddr + SXGBE_MTL_TXQ_OPMODE_REG(queue_num));
+}
+
+static void sxgbe_set_rx_mtl_mode(void __iomem *ioaddr, int queue_num,
+ int rx_mode)
+{
+ u32 reg_val;
+ reg_val = readl(ioaddr + SXGBE_MTL_RXQ_OPMODE_REG(queue_num));
+ /* RX specific MTL mode settings */
+ if (rx_mode == SXGBE_RX_MTL_SFMODE) {
+ reg_val |= SXGBE_RX_MTL_SFMODE;
+ } else {
+ if (rx_mode <= 64)
+ reg_val |= MTL_CONTROL_RTC_64;
+ else if (rx_mode <= 96)
+ reg_val |= MTL_CONTROL_RTC_96;
+ else if (rx_mode <= 128)
+ reg_val |= MTL_CONTROL_RTC_128;
+ }
+
+ /* write into RXQ operation register */
+ writel(reg_val, ioaddr + SXGBE_MTL_RXQ_OPMODE_REG(queue_num));
+}
+
+static const struct sxgbe_mtl_ops mtl_ops = {
+ .mtl_set_txfifosize = sxgbe_mtl_set_txfifosize,
+ .mtl_set_rxfifosize = sxgbe_mtl_set_rxfifosize,
+ .mtl_enable_txqueue = sxgbe_mtl_enable_txqueue,
+ .mtl_disable_txqueue = sxgbe_mtl_disable_txqueue,
+ .mtl_dynamic_dma_rxqueue = sxgbe_mtl_dma_dm_rxqueue,
+ .set_tx_mtl_mode = sxgbe_set_tx_mtl_mode,
+ .set_rx_mtl_mode = sxgbe_set_rx_mtl_mode,
+ .mtl_init = sxgbe_mtl_init,
+ .mtl_fc_active = sxgbe_mtl_fc_active,
+ .mtl_fc_deactive = sxgbe_mtl_fc_deactive,
+ .mtl_fc_enable = sxgbe_mtl_fc_enable,
+ .mtl_fep_enable = sxgbe_mtl_fep_enable,
+ .mtl_fep_disable = sxgbe_mtl_fep_disable,
+ .mtl_fup_enable = sxgbe_mtl_fup_enable,
+ .mtl_fup_disable = sxgbe_mtl_fup_disable
+};
+
+const struct sxgbe_mtl_ops *sxgbe_get_mtl_ops(void)
+{
+ return &mtl_ops;
+}
new file mode 100644
@@ -0,0 +1,104 @@
+/* 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_MTL_H__
+#define __SXGBE_MTL_H__
+
+#define SXGBE_MTL_OPMODE_ESTMASK 0x3
+#define SXGBE_MTL_OPMODE_RAAMASK 0x1
+#define SXGBE_MTL_FCMASK 0x7
+#define SXGBE_MTL_TX_FIFO_DIV 256
+#define SXGBE_MTL_RX_FIFO_DIV 256
+
+#define SXGBE_MTL_RXQ_OP_FEP BIT(4)
+#define SXGBE_MTL_RXQ_OP_FUP BIT(3)
+#define SXGBE_MTL_ENABLE_FC 0x80
+
+#define ETS_WRR 0xFFFFFF9F
+#define ETS_RST 0xFFFFFF9F
+#define ETS_WFQ 0x00000020
+#define ETS_DWRR 0x00000040
+#define RAA_SP 0xFFFFFFFB
+#define RAA_WSP 0x00000004
+
+#define RX_QUEUE_DYNAMIC 0x80808080
+#define RX_FC_ACTIVE 8
+#define RX_FC_DEACTIVE 13
+
+enum ttc_control {
+ MTL_CONTROL_TTC_64 = 0x00000000,
+ MTL_CONTROL_TTC_96 = 0x00000020,
+ MTL_CONTROL_TTC_128 = 0x00000030,
+ MTL_CONTROL_TTC_192 = 0x00000040,
+ MTL_CONTROL_TTC_256 = 0x00000050,
+ MTL_CONTROL_TTC_384 = 0x00000060,
+ MTL_CONTROL_TTC_512 = 0x00000070,
+};
+
+enum rtc_control {
+ MTL_CONTROL_RTC_64 = 0x00000000,
+ MTL_CONTROL_RTC_96 = 0x00000002,
+ MTL_CONTROL_RTC_128 = 0x00000003,
+};
+
+enum flow_control_th {
+ MTL_FC_FULL_1K = 0x00000000,
+ MTL_FC_FULL_2K = 0x00000001,
+ MTL_FC_FULL_4K = 0x00000002,
+ MTL_FC_FULL_5K = 0x00000003,
+ MTL_FC_FULL_6K = 0x00000004,
+ MTL_FC_FULL_8K = 0x00000005,
+ MTL_FC_FULL_16K = 0x00000006,
+ MTL_FC_FULL_24K = 0x00000007,
+};
+
+struct sxgbe_mtl_ops {
+ void (*mtl_init)(void __iomem *ioaddr, unsigned int etsalg,
+ unsigned int raa);
+
+ void (*mtl_set_txfifosize)(void __iomem *ioaddr, int queue_num,
+ int mtl_fifo);
+
+ void (*mtl_set_rxfifosize)(void __iomem *ioaddr, int queue_num,
+ int queue_fifo);
+
+ void (*mtl_enable_txqueue)(void __iomem *ioaddr, int queue_num);
+
+ void (*mtl_disable_txqueue)(void __iomem *ioaddr, int queue_num);
+
+ void (*set_tx_mtl_mode)(void __iomem *ioaddr, int queue_num,
+ int tx_mode);
+
+ void (*set_rx_mtl_mode)(void __iomem *ioaddr, int queue_num,
+ int rx_mode);
+
+ void (*mtl_dynamic_dma_rxqueue)(void __iomem *ioaddr);
+
+ void (*mtl_fc_active)(void __iomem *ioaddr, int queue_num,
+ int threshold);
+
+ void (*mtl_fc_deactive)(void __iomem *ioaddr, int queue_num,
+ int threshold);
+
+ void (*mtl_fc_enable)(void __iomem *ioaddr, int queue_num);
+
+ void (*mtl_fep_enable)(void __iomem *ioaddr, int queue_num);
+
+ void (*mtl_fep_disable)(void __iomem *ioaddr, int queue_num);
+
+ void (*mtl_fup_enable)(void __iomem *ioaddr, int queue_num);
+
+ void (*mtl_fup_disable)(void __iomem *ioaddr, int queue_num);
+};
+
+const struct sxgbe_mtl_ops *sxgbe_get_mtl_ops(void);
+
+#endif /* __SXGBE_MTL_H__ */
new file mode 100644
@@ -0,0 +1,265 @@
+/* 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.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/etherdevice.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/of.h>
+#include <linux/of_irq.h>
+#include <linux/of_net.h>
+#include <linux/phy.h>
+#include <linux/platform_device.h>
+#include <linux/sxgbe_platform.h>
+
+#include "sxgbe_common.h"
+#include "sxgbe_reg.h"
+
+#ifdef CONFIG_OF
+static int sxgbe_probe_config_dt(struct platform_device *pdev,
+ struct sxgbe_plat_data *plat,
+ const char **mac)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct sxgbe_dma_cfg *dma_cfg;
+ u32 phy_addr;
+
+ if (!np)
+ return -ENODEV;
+
+ *mac = of_get_mac_address(np);
+ plat->interface = of_get_phy_mode(np);
+
+ plat->bus_id = of_alias_get_id(np, "ethernet");
+ if (plat->bus_id < 0)
+ plat->bus_id = 0;
+
+ of_property_read_u32(np, "samsung,phy-addr", &plat->phy_addr);
+
+ plat->mdio_bus_data = devm_kzalloc(&pdev->dev,
+ sizeof(struct sxgbe_mdio_bus_data),
+ GFP_KERNEL);
+
+ if (of_device_is_compatible(np, "samsung,sxgbe-v2.0a"))
+ plat->pmt = 1;
+
+ plat->force_sf_dma_mode = of_property_read_bool(np,
+ "samsung,force_sf_dma_mode");
+
+ dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*dma_cfg), GFP_KERNEL);
+ if (!dma_cfg)
+ return -ENOMEM;
+
+ plat->dma_cfg = dma_cfg;
+ of_property_read_u32(np, "samsung,pbl", &dma_cfg->pbl);
+ of_property_read_u32(np, "samsung,burst-map", &dma_cfg->burst_map);
+ dma_cfg->fixed_burst = of_property_read_bool(np, "samsung,fixed-burst");
+ dma_cfg->adv_addr_mode = of_property_read_bool(np,
+ "samsung,adv-addr-mode");
+
+ plat->force_thresh_dma_mode = of_property_read_bool(np,
+ "samsung,force_thresh_dma_mode");
+ if (plat->force_thresh_dma_mode) {
+ plat->force_sf_dma_mode = 0;
+ pr_warn("force_sf_dma_mode is ignored as force_thresh_dma_mode is set\n");
+ }
+
+ return 0;
+}
+#else
+static int sxgbe_probe_config_dt(struct platform_device *pdev,
+ struct sxgbe_plat_data *plat,
+ const char **mac)
+{
+ return -ENOSYS;
+}
+#endif /* CONFIG_OF */
+
+/**
+ * sxgbe_platform_probe
+ * @pdev: platform device pointer
+ * Description: platform_device probe function. It allocates
+ * the necessary resources and invokes the main to init
+ * the net device, register the mdio bus etc.
+ */
+static int sxgbe_platform_probe(struct platform_device *pdev)
+{
+ int ret = 0;
+ int loop = 0;
+ int index1, index2;
+ struct resource *res;
+ struct device *dev = &pdev->dev;
+ void __iomem *addr = NULL;
+ struct sxgbe_priv_data *priv = NULL;
+ struct sxgbe_plat_data *plat_dat = NULL;
+ const char *mac = NULL;
+ int total_dma_channels = SXGBE_TX_QUEUES + SXGBE_RX_QUEUES;
+
+ /* Get memory resource */
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -ENODEV;
+
+ addr = devm_ioremap_resource(dev, res);
+ if (IS_ERR(addr))
+ return PTR_ERR(addr);
+
+ plat_dat = pdev->dev.platform_data;
+ if (pdev->dev.of_node) {
+ if (!plat_dat)
+ plat_dat = devm_kzalloc(&pdev->dev,
+ sizeof(struct sxgbe_plat_data),
+ GFP_KERNEL);
+ if (!plat_dat)
+ return -ENOMEM;
+
+ ret = sxgbe_probe_config_dt(pdev, plat_dat, &mac);
+ if (ret) {
+ pr_err("%s: main dt probe failed\n", __func__);
+ return ret;
+ }
+ }
+
+ priv = sxgbe_dvr_probe(&(pdev->dev), plat_dat, addr);
+ if (!priv) {
+ pr_err("%s: main driver probe failed\n", __func__);
+ return -ENODEV;
+ }
+
+ /* Get MAC address if available (DT) */
+ if (mac)
+ ether_addr_copy(priv->dev->dev_addr, mac);
+
+ /* Get the SXGBE common INT information */
+ priv->dev->irq = irq_of_parse_and_map(dev->of_node, loop++);
+ if (priv->dev->irq <= 0) {
+ dev_err(dev, "sxgbe common irq parsing failed\n");
+ return -EINVAL;
+ }
+
+ /* Get the TX/RX IRQ numbers */
+ for (index1 = 0, index2 = 0 ; loop < total_dma_channels; loop++) {
+ if (loop < SXGBE_TX_QUEUES) {
+ (priv->txq[index1])->irq_no =
+ irq_of_parse_and_map(dev->of_node, loop);
+ if ((priv->txq[index1++])->irq_no <= 0) {
+ dev_err(dev, "sxgbe tx irq parsing failed\n");
+ return -EINVAL;
+ }
+ } else {
+ (priv->rxq[index2])->irq_no =
+ irq_of_parse_and_map(dev->of_node, loop);
+ if ((priv->rxq[index2++])->irq_no <= 0) {
+ dev_err(dev, "sxgbe rx irq parsing failed\n");
+ return -EINVAL;
+ }
+ }
+ }
+
+ platform_set_drvdata(pdev, priv->dev);
+
+ pr_debug("platform driver registration completed\n");
+
+ return 0;
+}
+
+/**
+ * sxgbe_platform_remove
+ * @pdev: platform device pointer
+ * Description: this function calls the main to free the net resources
+ * and calls the platforms hook and release the resources (e.g. mem).
+ */
+static int sxgbe_platform_remove(struct platform_device *pdev)
+{
+ struct net_device *ndev = platform_get_drvdata(pdev);
+ int ret = sxgbe_dvr_remove(ndev);
+
+ return ret;
+}
+
+#ifdef CONFIG_PM
+static int sxgbe_platform_suspend(struct device *dev)
+{
+ struct net_device *ndev = dev_get_drvdata(dev);
+
+ return sxgbe_suspend(ndev);
+}
+
+static int sxgbe_platform_resume(struct device *dev)
+{
+ struct net_device *ndev = dev_get_drvdata(dev);
+
+ return sxgbe_resume(ndev);
+}
+
+int sxgbe_platform_freeze(struct device *dev)
+{
+ int ret;
+ struct net_device *ndev = dev_get_drvdata(dev);
+
+ ret = sxgbe_freeze(ndev);
+
+ return ret;
+}
+
+int sxgbe_platform_restore(struct device *dev)
+{
+ struct net_device *ndev = dev_get_drvdata(dev);
+
+ return sxgbe_restore(ndev);
+}
+
+static const struct dev_pm_ops sxgbe_platform_pm_ops = {
+ .suspend = sxgbe_platform_suspend,
+ .resume = sxgbe_platform_resume,
+ .freeze = sxgbe_platform_freeze,
+ .thaw = sxgbe_platform_restore,
+ .restore = sxgbe_platform_restore,
+};
+#else
+static const struct dev_pm_ops sxgbe_platform_pm_ops;
+#endif /* CONFIG_PM */
+
+static const struct of_device_id sxgbe_dt_ids[] = {
+ { .compatible = "samsung,sxgbe-v2.0a"},
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, sxgbe_dt_ids);
+
+struct platform_driver sxgbe_platform_driver = {
+ .probe = sxgbe_platform_probe,
+ .remove = sxgbe_platform_remove,
+ .driver = {
+ .name = SXGBE_RESOURCE_NAME,
+ .owner = THIS_MODULE,
+ .pm = &sxgbe_platform_pm_ops,
+ .of_match_table = of_match_ptr(sxgbe_dt_ids),
+ },
+};
+
+int sxgbe_register_platform(void)
+{
+ int err;
+
+ err = platform_driver_register(&sxgbe_platform_driver);
+ if (err)
+ pr_err("failed to register the platform driver\n");
+
+ return err;
+}
+
+void sxgbe_unregister_platform(void)
+{
+ platform_driver_unregister(&sxgbe_platform_driver);
+}
new file mode 100644
@@ -0,0 +1,477 @@
+/* 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_REGMAP_H__
+#define __SXGBE_REGMAP_H__
+
+/* SXGBE MAC Registers */
+#define SXGBE_CORE_TX_CONFIG_REG 0x0000
+#define SXGBE_CORE_RX_CONFIG_REG 0x0004
+#define SXGBE_CORE_PKT_FILTER_REG 0x0008
+#define SXGBE_CORE_WATCHDOG_TIMEOUT_REG 0x000C
+#define SXGBE_CORE_HASH_TABLE_REG0 0x0010
+#define SXGBE_CORE_HASH_TABLE_REG1 0x0014
+#define SXGBE_CORE_HASH_TABLE_REG2 0x0018
+#define SXGBE_CORE_HASH_TABLE_REG3 0x001C
+#define SXGBE_CORE_HASH_TABLE_REG4 0x0020
+#define SXGBE_CORE_HASH_TABLE_REG5 0x0024
+#define SXGBE_CORE_HASH_TABLE_REG6 0x0028
+#define SXGBE_CORE_HASH_TABLE_REG7 0x002C
+/* VLAN Specific Registers */
+#define SXGBE_CORE_VLAN_TAG_REG 0x0050
+#define SXGBE_CORE_VLAN_HASHTAB_REG 0x0058
+#define SXGBE_CORE_VLAN_INSCTL_REG 0x0060
+#define SXGBE_CORE_VLAN_INNERCTL_REG 0x0064
+#define SXGBE_CORE_RX_ETHTYPE_MATCH_REG 0x006C
+
+/* Flow Contol Registers */
+#define SXGBE_CORE_TX_Q0_FLOWCTL_REG 0x0070
+#define SXGBE_CORE_TX_Q1_FLOWCTL_REG 0x0074
+#define SXGBE_CORE_TX_Q2_FLOWCTL_REG 0x0078
+#define SXGBE_CORE_TX_Q3_FLOWCTL_REG 0x007C
+#define SXGBE_CORE_TX_Q4_FLOWCTL_REG 0x0080
+#define SXGBE_CORE_TX_Q5_FLOWCTL_REG 0x0084
+#define SXGBE_CORE_TX_Q6_FLOWCTL_REG 0x0088
+#define SXGBE_CORE_TX_Q7_FLOWCTL_REG 0x008C
+#define SXGBE_CORE_RX_FLOWCTL_REG 0x0090
+#define SXGBE_CORE_RX_CTL0_REG 0x00A0
+#define SXGBE_CORE_RX_CTL1_REG 0x00A4
+#define SXGBE_CORE_RX_CTL2_REG 0x00A8
+#define SXGBE_CORE_RX_CTL3_REG 0x00AC
+
+/* Interrupt Registers */
+#define SXGBE_CORE_INT_STATUS_REG 0x00B0
+#define SXGBE_CORE_INT_ENABLE_REG 0x00B4
+#define SXGBE_CORE_RXTX_ERR_STATUS_REG 0x00B8
+#define SXGBE_CORE_PMT_CTL_STATUS_REG 0x00C0
+#define SXGBE_CORE_RWK_PKT_FILTER_REG 0x00C4
+#define SXGBE_CORE_VERSION_REG 0x0110
+#define SXGBE_CORE_DEBUG_REG 0x0114
+#define SXGBE_CORE_HW_FEA_REG(index) (0x011C + index * 4)
+
+/* SMA(MDIO) module registers */
+#define SXGBE_MDIO_SCMD_ADD_REG 0x0200
+#define SXGBE_MDIO_SCMD_DATA_REG 0x0204
+#define SXGBE_MDIO_CCMD_WADD_REG 0x0208
+#define SXGBE_MDIO_CCMD_WDATA_REG 0x020C
+#define SXGBE_MDIO_CSCAN_PORT_REG 0x0210
+#define SXGBE_MDIO_INT_STATUS_REG 0x0214
+#define SXGBE_MDIO_INT_ENABLE_REG 0x0218
+#define SXGBE_MDIO_PORT_CONDCON_REG 0x021C
+#define SXGBE_MDIO_CLAUSE22_PORT_REG 0x0220
+
+/* port specific, addr = 0-3 */
+#define SXGBE_MDIO_DEV_BASE_REG 0x0230
+#define SXGBE_MDIO_PORT_DEV_REG(addr) \
+ (SXGBE_MDIO_DEV_BASE_REG + (0x10 * addr) + 0x0)
+#define SXGBE_MDIO_PORT_LSTATUS_REG(addr) \
+ (SXGBE_MDIO_DEV_BASE_REG + (0x10 * addr) + 0x4)
+#define SXGBE_MDIO_PORT_ALIVE_REG(addr) \
+ (SXGBE_MDIO_DEV_BASE_REG + (0x10 * addr) + 0x8)
+
+#define SXGBE_CORE_GPIO_CTL_REG 0x0278
+#define SXGBE_CORE_GPIO_STATUS_REG 0x027C
+
+/* Address registers for filtering */
+#define SXGBE_CORE_ADD_BASE_REG 0x0300
+
+/* addr = 0-31 */
+#define SXGBE_CORE_ADD_HIGHOFFSET(addr) \
+ (SXGBE_CORE_ADD_BASE_REG + (0x8 * addr) + 0x0)
+#define SXGBE_CORE_ADD_LOWOFFSET(addr) \
+ (SXGBE_CORE_ADD_BASE_REG + (0x8 * addr) + 0x4)
+
+/* SXGBE MMC registers */
+#define SXGBE_MMC_CTL_REG 0x0800
+#define SXGBE_MMC_RXINT_STATUS_REG 0x0804
+#define SXGBE_MMC_TXINT_STATUS_REG 0x0808
+#define SXGBE_MMC_RXINT_ENABLE_REG 0x080C
+#define SXGBE_MMC_TXINT_ENABLE_REG 0x0810
+
+/* TX specific counters */
+#define SXGBE_MMC_TXOCTETHI_GBCNT_REG 0x0814
+#define SXGBE_MMC_TXOCTETLO_GBCNT_REG 0x0818
+#define SXGBE_MMC_TXFRAMELO_GBCNT_REG 0x081C
+#define SXGBE_MMC_TXFRAMEHI_GBCNT_REG 0x0820
+#define SXGBE_MMC_TXBROADLO_GCNT_REG 0x0824
+#define SXGBE_MMC_TXBROADHI_GCNT_REG 0x0828
+#define SXGBE_MMC_TXMULTILO_GCNT_REG 0x082C
+#define SXGBE_MMC_TXMULTIHI_GCNT_REG 0x0830
+#define SXGBE_MMC_TX64LO_GBCNT_REG 0x0834
+#define SXGBE_MMC_TX64HI_GBCNT_REG 0x0838
+#define SXGBE_MMC_TX65TO127LO_GBCNT_REG 0x083C
+#define SXGBE_MMC_TX65TO127HI_GBCNT_REG 0x0840
+#define SXGBE_MMC_TX128TO255LO_GBCNT_REG 0x0844
+#define SXGBE_MMC_TX128TO255HI_GBCNT_REG 0x0848
+#define SXGBE_MMC_TX256TO511LO_GBCNT_REG 0x084C
+#define SXGBE_MMC_TX256TO511HI_GBCNT_REG 0x0850
+#define SXGBE_MMC_TX512TO1023LO_GBCNT_REG 0x0854
+#define SXGBE_MMC_TX512TO1023HI_GBCNT_REG 0x0858
+#define SXGBE_MMC_TX1023TOMAXLO_GBCNT_REG 0x085C
+#define SXGBE_MMC_TX1023TOMAXHI_GBCNT_REG 0x0860
+#define SXGBE_MMC_TXUNICASTLO_GBCNT_REG 0x0864
+#define SXGBE_MMC_TXUNICASTHI_GBCNT_REG 0x0868
+#define SXGBE_MMC_TXMULTILO_GBCNT_REG 0x086C
+#define SXGBE_MMC_TXMULTIHI_GBCNT_REG 0x0870
+#define SXGBE_MMC_TXBROADLO_GBCNT_REG 0x0874
+#define SXGBE_MMC_TXBROADHI_GBCNT_REG 0x0878
+#define SXGBE_MMC_TXUFLWLO_GBCNT_REG 0x087C
+#define SXGBE_MMC_TXUFLWHI_GBCNT_REG 0x0880
+#define SXGBE_MMC_TXOCTETLO_GCNT_REG 0x0884
+#define SXGBE_MMC_TXOCTETHI_GCNT_REG 0x0888
+#define SXGBE_MMC_TXFRAMELO_GCNT_REG 0x088C
+#define SXGBE_MMC_TXFRAMEHI_GCNT_REG 0x0890
+#define SXGBE_MMC_TXPAUSELO_CNT_REG 0x0894
+#define SXGBE_MMC_TXPAUSEHI_CNT_REG 0x0898
+#define SXGBE_MMC_TXVLANLO_GCNT_REG 0x089C
+#define SXGBE_MMC_TXVLANHI_GCNT_REG 0x08A0
+
+/* RX specific counters */
+#define SXGBE_MMC_RXFRAMELO_GBCNT_REG 0x0900
+#define SXGBE_MMC_RXFRAMEHI_GBCNT_REG 0x0904
+#define SXGBE_MMC_RXOCTETLO_GBCNT_REG 0x0908
+#define SXGBE_MMC_RXOCTETHI_GBCNT_REG 0x090C
+#define SXGBE_MMC_RXOCTETLO_GCNT_REG 0x0910
+#define SXGBE_MMC_RXOCTETHI_GCNT_REG 0x0914
+#define SXGBE_MMC_RXBROADLO_GCNT_REG 0x0918
+#define SXGBE_MMC_RXBROADHI_GCNT_REG 0x091C
+#define SXGBE_MMC_RXMULTILO_GCNT_REG 0x0920
+#define SXGBE_MMC_RXMULTIHI_GCNT_REG 0x0924
+#define SXGBE_MMC_RXCRCERRLO_REG 0x0928
+#define SXGBE_MMC_RXCRCERRHI_REG 0x092C
+#define SXGBE_MMC_RXSHORT64BFRAME_ERR_REG 0x0930
+#define SXGBE_MMC_RXJABBERERR_REG 0x0934
+#define SXGBE_MMC_RXSHORT64BFRAME_COR_REG 0x0938
+#define SXGBE_MMC_RXOVERMAXFRAME_COR_REG 0x093C
+#define SXGBE_MMC_RX64LO_GBCNT_REG 0x0940
+#define SXGBE_MMC_RX64HI_GBCNT_REG 0x0944
+#define SXGBE_MMC_RX65TO127LO_GBCNT_REG 0x0948
+#define SXGBE_MMC_RX65TO127HI_GBCNT_REG 0x094C
+#define SXGBE_MMC_RX128TO255LO_GBCNT_REG 0x0950
+#define SXGBE_MMC_RX128TO255HI_GBCNT_REG 0x0954
+#define SXGBE_MMC_RX256TO511LO_GBCNT_REG 0x0958
+#define SXGBE_MMC_RX256TO511HI_GBCNT_REG 0x095C
+#define SXGBE_MMC_RX512TO1023LO_GBCNT_REG 0x0960
+#define SXGBE_MMC_RX512TO1023HI_GBCNT_REG 0x0964
+#define SXGBE_MMC_RX1023TOMAXLO_GBCNT_REG 0x0968
+#define SXGBE_MMC_RX1023TOMAXHI_GBCNT_REG 0x096C
+#define SXGBE_MMC_RXUNICASTLO_GCNT_REG 0x0970
+#define SXGBE_MMC_RXUNICASTHI_GCNT_REG 0x0974
+#define SXGBE_MMC_RXLENERRLO_REG 0x0978
+#define SXGBE_MMC_RXLENERRHI_REG 0x097C
+#define SXGBE_MMC_RXOUTOFRANGETYPELO_REG 0x0980
+#define SXGBE_MMC_RXOUTOFRANGETYPEHI_REG 0x0984
+#define SXGBE_MMC_RXPAUSELO_CNT_REG 0x0988
+#define SXGBE_MMC_RXPAUSEHI_CNT_REG 0x098C
+#define SXGBE_MMC_RXFIFOOVERFLOWLO_GBCNT_REG 0x0990
+#define SXGBE_MMC_RXFIFOOVERFLOWHI_GBCNT_REG 0x0994
+#define SXGBE_MMC_RXVLANLO_GBCNT_REG 0x0998
+#define SXGBE_MMC_RXVLANHI_GBCNT_REG 0x099C
+#define SXGBE_MMC_RXWATCHDOG_ERR_REG 0x09A0
+
+/* L3/L4 function registers */
+#define SXGBE_CORE_L34_ADDCTL_REG 0x0C00
+#define SXGBE_CORE_L34_ADDCTL_REG 0x0C00
+#define SXGBE_CORE_L34_DATA_REG 0x0C04
+
+/* ARP registers */
+#define SXGBE_CORE_ARP_ADD_REG 0x0C10
+
+/* RSS registers */
+#define SXGBE_CORE_RSS_CTL_REG 0x0C80
+#define SXGBE_CORE_RSS_ADD_REG 0x0C88
+#define SXGBE_CORE_RSS_DATA_REG 0x0C8C
+
+/* IEEE 1588 registers */
+#define SXGBE_CORE_TSTAMP_CTL_REG 0x0D00
+#define SXGBE_CORE_SUBSEC_INC_REG 0x0D04
+#define SXGBE_CORE_SYSTIME_SEC_REG 0x0D0C
+#define SXGBE_CORE_SYSTIME_NSEC_REG 0x0D10
+#define SXGBE_CORE_SYSTIME_SECUP_REG 0x0D14
+#define SXGBE_CORE_TSTAMP_ADD_REG 0x0D18
+#define SXGBE_CORE_SYSTIME_HWORD_REG 0x0D1C
+#define SXGBE_CORE_TSTAMP_STATUS_REG 0x0D20
+#define SXGBE_CORE_TXTIME_STATUSNSEC_REG 0x0D30
+#define SXGBE_CORE_TXTIME_STATUSSEC_REG 0x0D34
+
+/* Auxiliary registers */
+#define SXGBE_CORE_AUX_CTL_REG 0x0D40
+#define SXGBE_CORE_AUX_TSTAMP_NSEC_REG 0x0D48
+#define SXGBE_CORE_AUX_TSTAMP_SEC_REG 0x0D4C
+#define SXGBE_CORE_AUX_TSTAMP_INGCOR_REG 0x0D50
+#define SXGBE_CORE_AUX_TSTAMP_ENGCOR_REG 0x0D54
+#define SXGBE_CORE_AUX_TSTAMP_INGCOR_NSEC_REG 0x0D58
+#define SXGBE_CORE_AUX_TSTAMP_INGCOR_SUBNSEC_REG 0x0D5C
+#define SXGBE_CORE_AUX_TSTAMP_ENGCOR_NSEC_REG 0x0D60
+#define SXGBE_CORE_AUX_TSTAMP_ENGCOR_SUBNSEC_REG 0x0D64
+
+/* PPS registers */
+#define SXGBE_CORE_PPS_CTL_REG 0x0D70
+#define SXGBE_CORE_PPS_BASE 0x0D80
+
+/* addr = 0 - 3 */
+#define SXGBE_CORE_PPS_TTIME_SEC_REG(addr) \
+ (SXGBE_CORE_PPS_BASE + (0x10 * addr) + 0x0)
+#define SXGBE_CORE_PPS_TTIME_NSEC_REG(addr) \
+ (SXGBE_CORE_PPS_BASE + (0x10 * addr) + 0x4)
+#define SXGBE_CORE_PPS_INTERVAL_REG(addr) \
+ (SXGBE_CORE_PPS_BASE + (0x10 * addr) + 0x8)
+#define SXGBE_CORE_PPS_WIDTH_REG(addr) \
+ (SXGBE_CORE_PPS_BASE + (0x10 * addr) + 0xC)
+#define SXGBE_CORE_PTO_CTL_REG 0x0DC0
+#define SXGBE_CORE_SRCPORT_ITY0_REG 0x0DC4
+#define SXGBE_CORE_SRCPORT_ITY1_REG 0x0DC8
+#define SXGBE_CORE_SRCPORT_ITY2_REG 0x0DCC
+#define SXGBE_CORE_LOGMSG_LEVEL_REG 0x0DD0
+
+/* SXGBE MTL Registers */
+#define SXGBE_MTL_BASE_REG 0x1000
+#define SXGBE_MTL_OP_MODE_REG (SXGBE_MTL_BASE_REG + 0x0000)
+#define SXGBE_MTL_DEBUG_CTL_REG (SXGBE_MTL_BASE_REG + 0x0008)
+#define SXGBE_MTL_DEBUG_STATUS_REG (SXGBE_MTL_BASE_REG + 0x000C)
+#define SXGBE_MTL_FIFO_DEBUGDATA_REG (SXGBE_MTL_BASE_REG + 0x0010)
+#define SXGBE_MTL_INT_STATUS_REG (SXGBE_MTL_BASE_REG + 0x0020)
+#define SXGBE_MTL_RXQ_DMAMAP0_REG (SXGBE_MTL_BASE_REG + 0x0030)
+#define SXGBE_MTL_RXQ_DMAMAP1_REG (SXGBE_MTL_BASE_REG + 0x0034)
+#define SXGBE_MTL_RXQ_DMAMAP2_REG (SXGBE_MTL_BASE_REG + 0x0038)
+#define SXGBE_MTL_TX_PRTYMAP0_REG (SXGBE_MTL_BASE_REG + 0x0040)
+#define SXGBE_MTL_TX_PRTYMAP1_REG (SXGBE_MTL_BASE_REG + 0x0044)
+
+/* TC/Queue registers, qnum=0-15 */
+#define SXGBE_MTL_TC_TXBASE_REG (SXGBE_MTL_BASE_REG + 0x0100)
+#define SXGBE_MTL_TXQ_OPMODE_REG(qnum) \
+ (SXGBE_MTL_TC_TXBASE_REG + (qnum * 0x80) + 0x00)
+#define SXGBE_MTL_SFMODE BIT(1)
+#define SXGBE_MTL_FIFO_LSHIFT 16
+#define SXGBE_MTL_ENABLE_QUEUE 0x00000008
+#define SXGBE_MTL_TXQ_UNDERFLOW_REG(qnum) \
+ (SXGBE_MTL_TC_TXBASE_REG + (qnum * 0x80) + 0x04)
+#define SXGBE_MTL_TXQ_DEBUG_REG(qnum) \
+ (SXGBE_MTL_TC_TXBASE_REG + (qnum * 0x80) + 0x08)
+#define SXGBE_MTL_TXQ_ETSCTL_REG(qnum) \
+ (SXGBE_MTL_TC_TXBASE_REG + (qnum * 0x80) + 0x10)
+#define SXGBE_MTL_TXQ_ETSSTATUS_REG(qnum) \
+ (SXGBE_MTL_TC_TXBASE_REG + (qnum * 0x80) + 0x14)
+#define SXGBE_MTL_TXQ_QUANTWEIGHT_REG(qnum) \
+ (SXGBE_MTL_TC_TXBASE_REG + (qnum * 0x80) + 0x18)
+
+#define SXGBE_MTL_TC_RXBASE_REG 0x1140
+#define SXGBE_RX_MTL_SFMODE BIT(5)
+#define SXGBE_MTL_RXQ_OPMODE_REG(qnum) \
+ (SXGBE_MTL_TC_RXBASE_REG + (qnum * 0x80) + 0x00)
+#define SXGBE_MTL_RXQ_MISPKTOVERFLOW_REG(qnum) \
+ (SXGBE_MTL_TC_RXBASE_REG + (qnum * 0x80) + 0x04)
+#define SXGBE_MTL_RXQ_DEBUG_REG(qnum) \
+ (SXGBE_MTL_TC_RXBASE_REG + (qnum * 0x80) + 0x08)
+#define SXGBE_MTL_RXQ_CTL_REG(qnum) \
+ (SXGBE_MTL_TC_RXBASE_REG + (qnum * 0x80) + 0x0C)
+#define SXGBE_MTL_RXQ_INTENABLE_REG(qnum) \
+ (SXGBE_MTL_TC_RXBASE_REG + (qnum * 0x80) + 0x30)
+#define SXGBE_MTL_RXQ_INTSTATUS_REG(qnum) \
+ (SXGBE_MTL_TC_RXBASE_REG + (qnum * 0x80) + 0x34)
+
+/* SXGBE DMA Registers */
+#define SXGBE_DMA_BASE_REG 0x3000
+#define SXGBE_DMA_MODE_REG (SXGBE_DMA_BASE_REG + 0x0000)
+#define SXGBE_DMA_SOFT_RESET BIT(0)
+#define SXGBE_DMA_SYSBUS_MODE_REG (SXGBE_DMA_BASE_REG + 0x0004)
+#define SXGBE_DMA_AXI_UNDEF_BURST BIT(0)
+#define SXGBE_DMA_ENHACE_ADDR_MODE BIT(11)
+#define SXGBE_DMA_INT_STATUS_REG (SXGBE_DMA_BASE_REG + 0x0008)
+#define SXGBE_DMA_AXI_ARCACHECTL_REG (SXGBE_DMA_BASE_REG + 0x0010)
+#define SXGBE_DMA_AXI_AWCACHECTL_REG (SXGBE_DMA_BASE_REG + 0x0018)
+#define SXGBE_DMA_DEBUG_STATUS0_REG (SXGBE_DMA_BASE_REG + 0x0020)
+#define SXGBE_DMA_DEBUG_STATUS1_REG (SXGBE_DMA_BASE_REG + 0x0024)
+#define SXGBE_DMA_DEBUG_STATUS2_REG (SXGBE_DMA_BASE_REG + 0x0028)
+#define SXGBE_DMA_DEBUG_STATUS3_REG (SXGBE_DMA_BASE_REG + 0x002C)
+#define SXGBE_DMA_DEBUG_STATUS4_REG (SXGBE_DMA_BASE_REG + 0x0030)
+#define SXGBE_DMA_DEBUG_STATUS5_REG (SXGBE_DMA_BASE_REG + 0x0034)
+
+/* Channel Registers, cha_num = 0-15 */
+#define SXGBE_DMA_CHA_BASE_REG \
+ (SXGBE_DMA_BASE_REG + 0x0100)
+#define SXGBE_DMA_CHA_CTL_REG(cha_num) \
+ (SXGBE_DMA_CHA_BASE_REG + (cha_num * 0x80) + 0x00)
+#define SXGBE_DMA_PBL_X8MODE BIT(16)
+#define SXGBE_DMA_CHA_TXCTL_TSE_ENABLE BIT(12)
+#define SXGBE_DMA_CHA_TXCTL_REG(cha_num) \
+ (SXGBE_DMA_CHA_BASE_REG + (cha_num * 0x80) + 0x04)
+#define SXGBE_DMA_CHA_RXCTL_REG(cha_num) \
+ (SXGBE_DMA_CHA_BASE_REG + (cha_num * 0x80) + 0x08)
+#define SXGBE_DMA_CHA_TXDESC_HADD_REG(cha_num) \
+ (SXGBE_DMA_CHA_BASE_REG + (cha_num * 0x80) + 0x10)
+#define SXGBE_DMA_CHA_TXDESC_LADD_REG(cha_num) \
+ (SXGBE_DMA_CHA_BASE_REG + (cha_num * 0x80) + 0x14)
+#define SXGBE_DMA_CHA_RXDESC_HADD_REG(cha_num) \
+ (SXGBE_DMA_CHA_BASE_REG + (cha_num * 0x80) + 0x18)
+#define SXGBE_DMA_CHA_RXDESC_LADD_REG(cha_num) \
+ (SXGBE_DMA_CHA_BASE_REG + (cha_num * 0x80) + 0x1C)
+#define SXGBE_DMA_CHA_TXDESC_TAILPTR_REG(cha_num) \
+ (SXGBE_DMA_CHA_BASE_REG + (cha_num * 0x80) + 0x24)
+#define SXGBE_DMA_CHA_RXDESC_TAILPTR_REG(cha_num) \
+ (SXGBE_DMA_CHA_BASE_REG + (cha_num * 0x80) + 0x2C)
+#define SXGBE_DMA_CHA_TXDESC_RINGLEN_REG(cha_num) \
+ (SXGBE_DMA_CHA_BASE_REG + (cha_num * 0x80) + 0x30)
+#define SXGBE_DMA_CHA_RXDESC_RINGLEN_REG(cha_num) \
+ (SXGBE_DMA_CHA_BASE_REG + (cha_num * 0x80) + 0x34)
+#define SXGBE_DMA_CHA_INT_ENABLE_REG(cha_num) \
+ (SXGBE_DMA_CHA_BASE_REG + (cha_num * 0x80) + 0x38)
+#define SXGBE_DMA_CHA_INT_RXWATCHTMR_REG(cha_num) \
+ (SXGBE_DMA_CHA_BASE_REG + (cha_num * 0x80) + 0x3C)
+#define SXGBE_DMA_CHA_TXDESC_CURADDLO_REG(cha_num) \
+ (SXGBE_DMA_CHA_BASE_REG + (cha_num * 0x80) + 0x44)
+#define SXGBE_DMA_CHA_RXDESC_CURADDLO_REG(cha_num) \
+ (SXGBE_DMA_CHA_BASE_REG + (cha_num * 0x80) + 0x4C)
+#define SXGBE_DMA_CHA_CURTXBUF_ADDHI_REG(cha_num) \
+ (SXGBE_DMA_CHA_BASE_REG + (cha_num * 0x80) + 0x50)
+#define SXGBE_DMA_CHA_CURTXBUF_ADDLO_REG(cha_num) \
+ (SXGBE_DMA_CHA_BASE_REG + (cha_num * 0x80) + 0x54)
+#define SXGBE_DMA_CHA_CURRXBUF_ADDHI_REG(cha_num) \
+ (SXGBE_DMA_CHA_BASE_REG + (cha_num * 0x80) + 0x58)
+#define SXGBE_DMA_CHA_CURRXBUF_ADDLO_REG(cha_num) \
+ (SXGBE_DMA_CHA_BASE_REG + (cha_num * 0x80) + 0x5C)
+#define SXGBE_DMA_CHA_STATUS_REG(cha_num) \
+ (SXGBE_DMA_CHA_BASE_REG + (cha_num * 0x80) + 0x60)
+
+/* TX DMA control register specific */
+#define SXGBE_TX_START_DMA BIT(0)
+
+/* sxgbe tx configuration register bitfields */
+#define SXGBE_SPEED_10G 0x0
+#define SXGBE_SPEED_2_5G 0x1
+#define SXGBE_SPEED_1G 0x2
+#define SXGBE_SPEED_LSHIFT 29
+
+#define SXGBE_TX_ENABLE BIT(0)
+#define SXGBE_TX_DISDIC_ALGO BIT(1)
+#define SXGBE_TX_JABBER_DISABLE BIT(16)
+
+/* sxgbe rx configuration register bitfields */
+#define SXGBE_RX_ENABLE BIT(0)
+#define SXGBE_RX_ACS_ENABLE BIT(1)
+#define SXGBE_RX_WATCHDOG_DISABLE BIT(7)
+#define SXGBE_RX_JUMBPKT_ENABLE BIT(8)
+#define SXGBE_RX_CSUMOFFLOAD_ENABLE BIT(9)
+#define SXGBE_RX_LOOPBACK_ENABLE BIT(10)
+#define SXGBE_RX_ARPOFFLOAD_ENABLE BIT(31)
+
+/* sxgbe vlan Tag Register bitfields */
+#define SXGBE_VLAN_SVLAN_ENABLE BIT(18)
+#define SXGBE_VLAN_DOUBLEVLAN_ENABLE BIT(26)
+#define SXGBE_VLAN_INNERVLAN_ENABLE BIT(27)
+
+/* XMAC VLAN Tag Inclusion Register(0x0060) bitfields
+ * Below fields same for Inner VLAN Tag Inclusion
+ * Register(0x0064) register
+ */
+enum vlan_tag_ctl_tx {
+ VLAN_TAG_TX_NOP,
+ VLAN_TAG_TX_DEL,
+ VLAN_TAG_TX_INSERT,
+ VLAN_TAG_TX_REPLACE
+};
+#define SXGBE_VLAN_PRTY_CTL BIT(18)
+#define SXGBE_VLAN_CSVL_CTL BIT(19)
+
+/* SXGBE TX Q Flow Control Register bitfields */
+#define SXGBE_TX_FLOW_CTL_FCB BIT(0)
+#define SXGBE_TX_FLOW_CTL_TFB BIT(1)
+
+/* SXGBE RX Q Flow Control Register bitfields */
+#define SXGBE_RX_FLOW_CTL_ENABLE BIT(0)
+#define SXGBE_RX_UNICAST_DETECT BIT(1)
+#define SXGBE_RX_PRTYFLOW_CTL_ENABLE BIT(8)
+
+/* sxgbe rx Q control0 register bitfields */
+#define SXGBE_RX_Q_ENABLE 0x2
+
+/* SXGBE hardware features bitfield specific */
+/* Capability Register 0 */
+#define SXGBE_HW_FEAT_GMII(cap) ((cap & 0x00000002) >> 1)
+#define SXGBE_HW_FEAT_VLAN_HASH_FILTER(cap) ((cap & 0x00000010) >> 4)
+#define SXGBE_HW_FEAT_SMA(cap) ((cap & 0x00000020) >> 5)
+#define SXGBE_HW_FEAT_PMT_TEMOTE_WOP(cap) ((cap & 0x00000040) >> 6)
+#define SXGBE_HW_FEAT_PMT_MAGIC_PKT(cap) ((cap & 0x00000080) >> 7)
+#define SXGBE_HW_FEAT_RMON(cap) ((cap & 0x00000100) >> 8)
+#define SXGBE_HW_FEAT_ARP_OFFLOAD(cap) ((cap & 0x00000200) >> 9)
+#define SXGBE_HW_FEAT_IEEE1500_2008(cap) ((cap & 0x00001000) >> 12)
+#define SXGBE_HW_FEAT_EEE(cap) ((cap & 0x00002000) >> 13)
+#define SXGBE_HW_FEAT_TX_CSUM_OFFLOAD(cap) ((cap & 0x00004000) >> 14)
+#define SXGBE_HW_FEAT_RX_CSUM_OFFLOAD(cap) ((cap & 0x00010000) >> 16)
+#define SXGBE_HW_FEAT_MACADDR_COUNT(cap) ((cap & 0x007C0000) >> 18)
+#define SXGBE_HW_FEAT_TSTMAP_SRC(cap) ((cap & 0x06000000) >> 25)
+#define SXGBE_HW_FEAT_SRCADDR_VLAN(cap) ((cap & 0x08000000) >> 27)
+
+/* Capability Register 1 */
+#define SXGBE_HW_FEAT_RX_FIFO_SIZE(cap) ((cap & 0x0000001F))
+#define SXGBE_HW_FEAT_TX_FIFO_SIZE(cap) ((cap & 0x000007C0) >> 6)
+#define SXGBE_HW_FEAT_IEEE1588_HWORD(cap) ((cap & 0x00002000) >> 13)
+#define SXGBE_HW_FEAT_DCB(cap) ((cap & 0x00010000) >> 16)
+#define SXGBE_HW_FEAT_SPLIT_HDR(cap) ((cap & 0x00020000) >> 17)
+#define SXGBE_HW_FEAT_TSO(cap) ((cap & 0x00040000) >> 18)
+#define SXGBE_HW_FEAT_DEBUG_MEM_IFACE(cap) ((cap & 0x00080000) >> 19)
+#define SXGBE_HW_FEAT_RSS(cap) ((cap & 0x00100000) >> 20)
+#define SXGBE_HW_FEAT_HASH_TABLE_SIZE(cap) ((cap & 0x03000000) >> 24)
+#define SXGBE_HW_FEAT_L3L4_FILTER_NUM(cap) ((cap & 0x78000000) >> 27)
+
+/* Capability Register 2 */
+#define SXGBE_HW_FEAT_RX_MTL_QUEUES(cap) ((cap & 0x0000000F))
+#define SXGBE_HW_FEAT_TX_MTL_QUEUES(cap) ((cap & 0x000003C0) >> 6)
+#define SXGBE_HW_FEAT_RX_DMA_CHANNELS(cap) ((cap & 0x0000F000) >> 12)
+#define SXGBE_HW_FEAT_TX_DMA_CHANNELS(cap) ((cap & 0x003C0000) >> 18)
+#define SXGBE_HW_FEAT_PPS_OUTPUTS(cap) ((cap & 0x07000000) >> 24)
+#define SXGBE_HW_FEAT_AUX_SNAPSHOTS(cap) ((cap & 0x70000000) >> 28)
+
+/* DMAchannel interrupt enable specific */
+/* DMA Normal interrupt */
+#define SXGBE_DMA_INT_ENA_NIE BIT(16) /* Normal Summary */
+#define SXGBE_DMA_INT_ENA_TIE BIT(0) /* Transmit Interrupt */
+#define SXGBE_DMA_INT_ENA_TUE BIT(2) /* Transmit Buffer Unavailable */
+#define SXGBE_DMA_INT_ENA_RIE BIT(6) /* Receive Interrupt */
+
+#define SXGBE_DMA_INT_NORMAL \
+ (SXGBE_DMA_INT_ENA_NIE | SXGBE_DMA_INT_ENA_RIE | \
+ SXGBE_DMA_INT_ENA_TIE | SXGBE_DMA_INT_ENA_TUE)
+
+/* DMA Abnormal interrupt */
+#define SXGBE_DMA_INT_ENA_AIE BIT(15) /* Abnormal Summary */
+#define SXGBE_DMA_INT_ENA_TSE BIT(1) /* Transmit Stopped */
+#define SXGBE_DMA_INT_ENA_RUE BIT(7) /* Receive Buffer Unavailable */
+#define SXGBE_DMA_INT_ENA_RSE BIT(8) /* Receive Stopped */
+#define SXGBE_DMA_INT_ENA_FBE BIT(12) /* Fatal Bus Error */
+#define SXGBE_DMA_INT_ENA_CDEE BIT(13) /* Context Descriptor Error */
+
+#define SXGBE_DMA_INT_ABNORMAL \
+ (SXGBE_DMA_INT_ENA_AIE | SXGBE_DMA_INT_ENA_TSE | \
+ SXGBE_DMA_INT_ENA_RUE | SXGBE_DMA_INT_ENA_RSE | \
+ SXGBE_DMA_INT_ENA_FBE | SXGBE_DMA_INT_ENA_CDEE)
+
+#define SXGBE_DMA_ENA_INT (SXGBE_DMA_INT_NORMAL | SXGBE_DMA_INT_ABNORMAL)
+
+/* DMA channel interrupt status specific */
+#define SXGBE_DMA_INT_STATUS_REB2 BIT(21)
+#define SXGBE_DMA_INT_STATUS_REB1 BIT(20)
+#define SXGBE_DMA_INT_STATUS_REB0 BIT(19)
+#define SXGBE_DMA_INT_STATUS_TEB2 BIT(18)
+#define SXGBE_DMA_INT_STATUS_TEB1 BIT(17)
+#define SXGBE_DMA_INT_STATUS_TEB0 BIT(16)
+#define SXGBE_DMA_INT_STATUS_NIS BIT(15)
+#define SXGBE_DMA_INT_STATUS_AIS BIT(14)
+#define SXGBE_DMA_INT_STATUS_CTXTERR BIT(13)
+#define SXGBE_DMA_INT_STATUS_FBE BIT(12)
+#define SXGBE_DMA_INT_STATUS_RPS BIT(8)
+#define SXGBE_DMA_INT_STATUS_RBU BIT(7)
+#define SXGBE_DMA_INT_STATUS_RI BIT(6)
+#define SXGBE_DMA_INT_STATUS_TBU BIT(2)
+#define SXGBE_DMA_INT_STATUS_TPS BIT(1)
+#define SXGBE_DMA_INT_STATUS_TI BIT(0)
+
+#endif /* __SXGBE_REGMAP_H__ */
new file mode 100644
@@ -0,0 +1,92 @@
+/* 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.
+ */
+#include <linux/bitops.h>
+#include <linux/kernel.h>
+#include <linux/netdevice.h>
+#include <linux/phy.h>
+#include "sxgbe_common.h"
+#include "sxgbe_xpcs.h"
+
+static int sxgbe_xpcs_read(struct net_device *ndev, unsigned int reg)
+{
+ u32 value;
+ struct sxgbe_priv_data *priv = netdev_priv(ndev);
+
+ value = readl(priv->ioaddr + XPCS_OFFSET + reg);
+
+ return value;
+}
+
+static int sxgbe_xpcs_write(struct net_device *ndev, int reg, int data)
+{
+ struct sxgbe_priv_data *priv = netdev_priv(ndev);
+
+ writel(data, priv->ioaddr + XPCS_OFFSET + reg);
+
+ return 0;
+}
+
+int sxgbe_xpcs_init(struct net_device *ndev)
+{
+ u32 value;
+
+ value = sxgbe_xpcs_read(ndev, SR_PCS_MMD_CONTROL1);
+ /* 10G XAUI mode */
+ sxgbe_xpcs_write(ndev, SR_PCS_CONTROL2, XPCS_TYPE_SEL_X);
+ sxgbe_xpcs_write(ndev, VR_PCS_MMD_XAUI_MODE_CONTROL, XPCS_XAUI_MODE);
+ sxgbe_xpcs_write(ndev, VR_PCS_MMD_XAUI_MODE_CONTROL, value | BIT(13));
+ sxgbe_xpcs_write(ndev, SR_PCS_MMD_CONTROL1, value | BIT(11));
+
+ do {
+ value = sxgbe_xpcs_read(ndev, VR_PCS_MMD_DIGITAL_STATUS);
+
+ } while ((value & XPCS_QSEQ_STATE_MPLLOFF) == XPCS_QSEQ_STATE_STABLE);
+
+ value = sxgbe_xpcs_read(ndev, SR_PCS_MMD_CONTROL1);
+ sxgbe_xpcs_write(ndev, SR_PCS_MMD_CONTROL1, value & ~BIT(11));
+
+ do {
+ value = sxgbe_xpcs_read(ndev, VR_PCS_MMD_DIGITAL_STATUS);
+ } while ((value & XPCS_QSEQ_STATE_MPLLOFF) != XPCS_QSEQ_STATE_STABLE);
+
+ return 0;
+}
+
+int sxgbe_xpcs_init_1G(struct net_device *ndev)
+{
+ int value;
+
+ /* 10GBASE-X PCS (1G) mode */
+ sxgbe_xpcs_write(ndev, SR_PCS_CONTROL2, XPCS_TYPE_SEL_X);
+ sxgbe_xpcs_write(ndev, VR_PCS_MMD_XAUI_MODE_CONTROL, XPCS_XAUI_MODE);
+ value = sxgbe_xpcs_read(ndev, SR_PCS_MMD_CONTROL1);
+ sxgbe_xpcs_write(ndev, SR_PCS_MMD_CONTROL1, value & ~BIT(13));
+
+ value = sxgbe_xpcs_read(ndev, SR_MII_MMD_CONTROL);
+ sxgbe_xpcs_write(ndev, SR_MII_MMD_CONTROL, value | BIT(6));
+ sxgbe_xpcs_write(ndev, SR_MII_MMD_CONTROL, value & ~BIT(13));
+ value = sxgbe_xpcs_read(ndev, SR_PCS_MMD_CONTROL1);
+ sxgbe_xpcs_write(ndev, SR_PCS_MMD_CONTROL1, value | BIT(11));
+
+ do {
+ value = sxgbe_xpcs_read(ndev, VR_PCS_MMD_DIGITAL_STATUS);
+ } while ((value & XPCS_QSEQ_STATE_MPLLOFF) != XPCS_QSEQ_STATE_STABLE);
+
+ value = sxgbe_xpcs_read(ndev, SR_PCS_MMD_CONTROL1);
+ sxgbe_xpcs_write(ndev, SR_PCS_MMD_CONTROL1, value & ~BIT(11));
+
+ /* Auto Negotiation cluase 37 enable */
+ value = sxgbe_xpcs_read(ndev, SR_MII_MMD_CONTROL);
+ sxgbe_xpcs_write(ndev, SR_MII_MMD_CONTROL, value | BIT(12));
+
+ return 0;
+}
new file mode 100644
@@ -0,0 +1,38 @@
+/* 10G controller driver for Samsung SoCs
+ *
+ * Copyright (C) 2013 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * Author: Byungho An <bh74.an@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_XPCS_H__
+#define __SXGBE_XPCS_H__
+
+/* XPCS Registers */
+#define XPCS_OFFSET 0x1A060000
+#define SR_PCS_MMD_CONTROL1 0x030000
+#define SR_PCS_CONTROL2 0x030007
+#define VR_PCS_MMD_XAUI_MODE_CONTROL 0x038004
+#define VR_PCS_MMD_DIGITAL_STATUS 0x038010
+#define SR_MII_MMD_CONTROL 0x1F0000
+#define SR_MII_MMD_AN_ADV 0x1F0004
+#define SR_MII_MMD_AN_LINK_PARTNER_BA 0x1F0005
+#define VR_MII_MMD_AN_CONTROL 0x1F8001
+#define VR_MII_MMD_AN_INT_STATUS 0x1F8002
+
+#define XPCS_QSEQ_STATE_STABLE 0x10
+#define XPCS_QSEQ_STATE_MPLLOFF 0x1c
+#define XPCS_TYPE_SEL_R 0x00
+#define XPCS_TYPE_SEL_X 0x01
+#define XPCS_TYPE_SEL_W 0x02
+#define XPCS_XAUI_MODE 0x00
+#define XPCS_RXAUI_MODE 0x01
+
+int sxgbe_xpcs_init(struct net_device *ndev);
+int sxgbe_xpcs_init_1G(struct net_device *ndev);
+
+#endif /* __SXGBE_XPCS_H__ */
new file mode 100644
@@ -0,0 +1,54 @@
+/*
+ * 10G controller driver for Samsung EXYNOS 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_PLATFORM_H__
+#define __SXGBE_PLATFORM_H__
+
+/* MDC Clock Selection define*/
+#define SXGBE_CSR_100_150M 0x0 /* MDC = clk_scr_i/62 */
+#define SXGBE_CSR_150_250M 0x1 /* MDC = clk_scr_i/102 */
+#define SXGBE_CSR_250_300M 0x2 /* MDC = clk_scr_i/122 */
+#define SXGBE_CSR_300_350M 0x3 /* MDC = clk_scr_i/142 */
+#define SXGBE_CSR_350_400M 0x4 /* MDC = clk_scr_i/162 */
+#define SXGBE_CSR_400_500M 0x5 /* MDC = clk_scr_i/202 */
+
+/* Platfrom data for platform device structure's
+ * platform_data field
+ */
+struct sxgbe_mdio_bus_data {
+ unsigned int phy_mask;
+ int *irqs;
+ int probed_phy_irq;
+};
+
+struct sxgbe_dma_cfg {
+ int pbl;
+ int fixed_burst;
+ int burst_map;
+ int adv_addr_mode;
+};
+
+struct sxgbe_plat_data {
+ char *phy_bus_name;
+ int bus_id;
+ int phy_addr;
+ int interface;
+ struct sxgbe_mdio_bus_data *mdio_bus_data;
+ struct sxgbe_dma_cfg *dma_cfg;
+ int clk_csr;
+ int pmt;
+ int force_sf_dma_mode;
+ int force_thresh_dma_mode;
+ int riwt_off;
+};
+
+#endif /* __SXGBE_PLATFORM_H__ */