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Diffstat (limited to 'drivers/net/ethernet/ezchip/nps_enet.h')
-rw-r--r--drivers/net/ethernet/ezchip/nps_enet.h336
1 files changed, 336 insertions, 0 deletions
diff --git a/drivers/net/ethernet/ezchip/nps_enet.h b/drivers/net/ethernet/ezchip/nps_enet.h
new file mode 100644
index 000000000000..fc45c9daa1c2
--- /dev/null
+++ b/drivers/net/ethernet/ezchip/nps_enet.h
@@ -0,0 +1,336 @@
+/*
+ * Copyright(c) 2015 EZchip Technologies.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * The full GNU General Public License is included in this distribution in
+ * the file called "COPYING".
+ */
+
+#ifndef _NPS_ENET_H
+#define _NPS_ENET_H
+
+/* default values */
+#define NPS_ENET_NAPI_POLL_WEIGHT 0x2
+#define NPS_ENET_MAX_FRAME_LENGTH 0x3FFF
+#define NPS_ENET_GE_MAC_CFG_0_TX_FC_RETR 0x7
+#define NPS_ENET_GE_MAC_CFG_0_RX_IFG 0x5
+#define NPS_ENET_GE_MAC_CFG_0_TX_IFG 0xC
+#define NPS_ENET_GE_MAC_CFG_0_TX_PR_LEN 0x7
+#define NPS_ENET_GE_MAC_CFG_2_STAT_EN 0x3
+#define NPS_ENET_GE_MAC_CFG_3_RX_IFG_TH 0x14
+#define NPS_ENET_GE_MAC_CFG_3_MAX_LEN 0x3FFC
+#define NPS_ENET_ENABLE 1
+#define NPS_ENET_DISABLE 0
+
+/* register definitions */
+#define NPS_ENET_REG_TX_CTL 0x800
+#define NPS_ENET_REG_TX_BUF 0x808
+#define NPS_ENET_REG_RX_CTL 0x810
+#define NPS_ENET_REG_RX_BUF 0x818
+#define NPS_ENET_REG_BUF_INT_ENABLE 0x8C0
+#define NPS_ENET_REG_BUF_INT_CAUSE 0x8C4
+#define NPS_ENET_REG_GE_MAC_CFG_0 0x1000
+#define NPS_ENET_REG_GE_MAC_CFG_1 0x1004
+#define NPS_ENET_REG_GE_MAC_CFG_2 0x1008
+#define NPS_ENET_REG_GE_MAC_CFG_3 0x100C
+#define NPS_ENET_REG_GE_RST 0x1400
+#define NPS_ENET_REG_PHASE_FIFO_CTL 0x1404
+
+/* Tx control register */
+struct nps_enet_tx_ctl {
+ union {
+ /* ct: SW sets to indicate frame ready in Tx buffer for
+ * transmission. HW resets to when transmission done
+ * et: Transmit error
+ * nt: Length in bytes of Tx frame loaded to Tx buffer
+ */
+ struct {
+ u32
+ __reserved_1:16,
+ ct:1,
+ et:1,
+ __reserved_2:3,
+ nt:11;
+ };
+
+ u32 value;
+ };
+};
+
+/* Rx control register */
+struct nps_enet_rx_ctl {
+ union {
+ /* cr: HW sets to indicate frame ready in Rx buffer.
+ * SW resets to indicate host read received frame
+ * and new frames can be written to Rx buffer
+ * er: Rx error indication
+ * crc: Rx CRC error indication
+ * nr: Length in bytes of Rx frame loaded by MAC to Rx buffer
+ */
+ struct {
+ u32
+ __reserved_1:16,
+ cr:1,
+ er:1,
+ crc:1,
+ __reserved_2:2,
+ nr:11;
+ };
+
+ u32 value;
+ };
+};
+
+/* Interrupt enable for data buffer events register */
+struct nps_enet_buf_int_enable {
+ union {
+ /* tx_done: Interrupt generation in the case when new frame
+ * is ready in Rx buffer
+ * rx_rdy: Interrupt generation in the case when current frame
+ * was read from TX buffer
+ */
+ struct {
+ u32
+ __reserved:30,
+ tx_done:1,
+ rx_rdy:1;
+ };
+
+ u32 value;
+ };
+};
+
+/* Interrupt cause for data buffer events register */
+struct nps_enet_buf_int_cause {
+ union {
+ /* tx_done: Interrupt in the case when current frame was
+ * read from TX buffer.
+ * rx_rdy: Interrupt in the case when new frame is ready
+ * in RX buffer.
+ */
+ struct {
+ u32
+ __reserved:30,
+ tx_done:1,
+ rx_rdy:1;
+ };
+
+ u32 value;
+ };
+};
+
+/* Gbps Eth MAC Configuration 0 register */
+struct nps_enet_ge_mac_cfg_0 {
+ union {
+ /* tx_pr_len: Transmit preamble length in bytes
+ * tx_ifg_nib: Tx idle pattern
+ * nib_mode: Nibble (4-bit) Mode
+ * rx_pr_check_en: Receive preamble Check Enable
+ * tx_ifg: Transmit inter-Frame Gap
+ * rx_ifg: Receive inter-Frame Gap
+ * tx_fc_retr: Transmit Flow Control Retransmit Mode
+ * rx_length_check_en: Receive Length Check Enable
+ * rx_crc_ignore: Results of the CRC check are ignored
+ * rx_crc_strip: MAC strips the CRC from received frames
+ * rx_fc_en: Receive Flow Control Enable
+ * tx_crc_en: Transmit CRC Enabled
+ * tx_pad_en: Transmit Padding Enable
+ * tx_cf_en: Transmit Flow Control Enable
+ * tx_en: Transmit Enable
+ * rx_en: Receive Enable
+ */
+ struct {
+ u32
+ tx_pr_len:4,
+ tx_ifg_nib:4,
+ nib_mode:1,
+ rx_pr_check_en:1,
+ tx_ifg:6,
+ rx_ifg:4,
+ tx_fc_retr:3,
+ rx_length_check_en:1,
+ rx_crc_ignore:1,
+ rx_crc_strip:1,
+ rx_fc_en:1,
+ tx_crc_en:1,
+ tx_pad_en:1,
+ tx_fc_en:1,
+ tx_en:1,
+ rx_en:1;
+ };
+
+ u32 value;
+ };
+};
+
+/* Gbps Eth MAC Configuration 1 register */
+struct nps_enet_ge_mac_cfg_1 {
+ union {
+ /* octet_3: MAC address octet 3
+ * octet_2: MAC address octet 2
+ * octet_1: MAC address octet 1
+ * octet_0: MAC address octet 0
+ */
+ struct {
+ u32
+ octet_3:8,
+ octet_2:8,
+ octet_1:8,
+ octet_0:8;
+ };
+
+ u32 value;
+ };
+};
+
+/* Gbps Eth MAC Configuration 2 register */
+struct nps_enet_ge_mac_cfg_2 {
+ union {
+ /* transmit_flush_en: MAC flush enable
+ * stat_en: RMON statistics interface enable
+ * disc_da: Discard frames with DA different
+ * from MAC address
+ * disc_bc: Discard broadcast frames
+ * disc_mc: Discard multicast frames
+ * octet_5: MAC address octet 5
+ * octet_4: MAC address octet 4
+ */
+ struct {
+ u32
+ transmit_flush_en:1,
+ __reserved_1:5,
+ stat_en:2,
+ __reserved_2:1,
+ disc_da:1,
+ disc_bc:1,
+ disc_mc:1,
+ __reserved_3:4,
+ octet_5:8,
+ octet_4:8;
+ };
+
+ u32 value;
+ };
+};
+
+/* Gbps Eth MAC Configuration 3 register */
+struct nps_enet_ge_mac_cfg_3 {
+ union {
+ /* ext_oob_cbfc_sel: Selects one of the 4 profiles for
+ * extended OOB in-flow-control indication
+ * max_len: Maximum receive frame length in bytes
+ * tx_cbfc_en: Enable transmission of class-based
+ * flow control packets
+ * rx_ifg_th: Threshold for IFG status reporting via OOB
+ * cf_timeout: Configurable time to decrement FC counters
+ * cf_drop: Drop control frames
+ * redirect_cbfc_sel: Selects one of CBFC redirect profiles
+ * rx_cbfc_redir_en: Enable Rx class-based flow
+ * control redirect
+ * rx_cbfc_en: Enable Rx class-based flow control
+ * tm_hd_mode: TM header mode
+ */
+ struct {
+ u32
+ ext_oob_cbfc_sel:2,
+ max_len:14,
+ tx_cbfc_en:1,
+ rx_ifg_th:5,
+ cf_timeout:4,
+ cf_drop:1,
+ redirect_cbfc_sel:2,
+ rx_cbfc_redir_en:1,
+ rx_cbfc_en:1,
+ tm_hd_mode:1;
+ };
+
+ u32 value;
+ };
+};
+
+/* GE MAC, PCS reset control register */
+struct nps_enet_ge_rst {
+ union {
+ /* gmac_0: GE MAC reset
+ * spcs_0: SGMII PCS reset
+ */
+ struct {
+ u32
+ __reserved_1:23,
+ gmac_0:1,
+ __reserved_2:7,
+ spcs_0:1;
+ };
+
+ u32 value;
+ };
+};
+
+/* Tx phase sync FIFO control register */
+struct nps_enet_phase_fifo_ctl {
+ union {
+ /* init: initialize serdes TX phase sync FIFO pointers
+ * rst: reset serdes TX phase sync FIFO
+ */
+ struct {
+ u32
+ __reserved:30,
+ init:1,
+ rst:1;
+ };
+
+ u32 value;
+ };
+};
+
+/**
+ * struct nps_enet_priv - Storage of ENET's private information.
+ * @regs_base: Base address of ENET memory-mapped control registers.
+ * @irq: For RX/TX IRQ number.
+ * @tx_packet_sent: SW indication if frame is being sent.
+ * @tx_skb: socket buffer of sent frame.
+ * @napi: Structure for NAPI.
+ */
+struct nps_enet_priv {
+ void __iomem *regs_base;
+ s32 irq;
+ bool tx_packet_sent;
+ struct sk_buff *tx_skb;
+ struct napi_struct napi;
+ struct nps_enet_ge_mac_cfg_2 ge_mac_cfg_2;
+ struct nps_enet_ge_mac_cfg_3 ge_mac_cfg_3;
+};
+
+/**
+ * nps_reg_set - Sets ENET register with provided value.
+ * @priv: Pointer to EZchip ENET private data structure.
+ * @reg: Register offset from base address.
+ * @value: Value to set in register.
+ */
+static inline void nps_enet_reg_set(struct nps_enet_priv *priv,
+ s32 reg, s32 value)
+{
+ iowrite32be(value, priv->regs_base + reg);
+}
+
+/**
+ * nps_reg_get - Gets value of specified ENET register.
+ * @priv: Pointer to EZchip ENET private data structure.
+ * @reg: Register offset from base address.
+ *
+ * returns: Value of requested register.
+ */
+static inline u32 nps_enet_reg_get(struct nps_enet_priv *priv, s32 reg)
+{
+ return ioread32be(priv->regs_base + reg);
+}
+
+#endif /* _NPS_ENET_H */