536 lines
15 KiB
C
536 lines
15 KiB
C
/* Altera Triple-Speed Ethernet MAC driver
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* Copyright (C) 2008-2014 Altera Corporation. All rights reserved
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*
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* Contributors:
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* Dalon Westergreen
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* Thomas Chou
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* Ian Abbott
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* Yuriy Kozlov
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* Tobias Klauser
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* Andriy Smolskyy
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* Roman Bulgakov
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* Dmytro Mytarchuk
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* Matthew Gerlach
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*
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* Original driver contributed by SLS.
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* Major updates contributed by GlobalLogic
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __ALTERA_TSE_H__
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#define __ALTERA_TSE_H__
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#define ALTERA_TSE_RESOURCE_NAME "altera_tse"
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#include <linux/bitops.h>
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#include <linux/if_vlan.h>
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#include <linux/list.h>
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#include <linux/netdevice.h>
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#include <linux/phy.h>
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#define ALTERA_TSE_SW_RESET_WATCHDOG_CNTR 10000
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#define ALTERA_TSE_MAC_FIFO_WIDTH 4 /* TX/RX FIFO width in
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* bytes
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*/
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/* Rx FIFO default settings */
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#define ALTERA_TSE_RX_SECTION_EMPTY 16
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#define ALTERA_TSE_RX_SECTION_FULL 0
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#define ALTERA_TSE_RX_ALMOST_EMPTY 8
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#define ALTERA_TSE_RX_ALMOST_FULL 8
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/* Tx FIFO default settings */
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#define ALTERA_TSE_TX_SECTION_EMPTY 16
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#define ALTERA_TSE_TX_SECTION_FULL 0
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#define ALTERA_TSE_TX_ALMOST_EMPTY 8
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#define ALTERA_TSE_TX_ALMOST_FULL 3
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/* MAC function configuration default settings */
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#define ALTERA_TSE_TX_IPG_LENGTH 12
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#define ALTERA_TSE_PAUSE_QUANTA 0xffff
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#define GET_BIT_VALUE(v, bit) (((v) >> (bit)) & 0x1)
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/* MAC Command_Config Register Bit Definitions
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*/
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#define MAC_CMDCFG_TX_ENA BIT(0)
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#define MAC_CMDCFG_RX_ENA BIT(1)
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#define MAC_CMDCFG_XON_GEN BIT(2)
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#define MAC_CMDCFG_ETH_SPEED BIT(3)
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#define MAC_CMDCFG_PROMIS_EN BIT(4)
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#define MAC_CMDCFG_PAD_EN BIT(5)
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#define MAC_CMDCFG_CRC_FWD BIT(6)
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#define MAC_CMDCFG_PAUSE_FWD BIT(7)
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#define MAC_CMDCFG_PAUSE_IGNORE BIT(8)
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#define MAC_CMDCFG_TX_ADDR_INS BIT(9)
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#define MAC_CMDCFG_HD_ENA BIT(10)
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#define MAC_CMDCFG_EXCESS_COL BIT(11)
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#define MAC_CMDCFG_LATE_COL BIT(12)
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#define MAC_CMDCFG_SW_RESET BIT(13)
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#define MAC_CMDCFG_MHASH_SEL BIT(14)
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#define MAC_CMDCFG_LOOP_ENA BIT(15)
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#define MAC_CMDCFG_TX_ADDR_SEL(v) (((v) & 0x7) << 16)
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#define MAC_CMDCFG_MAGIC_ENA BIT(19)
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#define MAC_CMDCFG_SLEEP BIT(20)
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#define MAC_CMDCFG_WAKEUP BIT(21)
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#define MAC_CMDCFG_XOFF_GEN BIT(22)
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#define MAC_CMDCFG_CNTL_FRM_ENA BIT(23)
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#define MAC_CMDCFG_NO_LGTH_CHECK BIT(24)
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#define MAC_CMDCFG_ENA_10 BIT(25)
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#define MAC_CMDCFG_RX_ERR_DISC BIT(26)
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#define MAC_CMDCFG_DISABLE_READ_TIMEOUT BIT(27)
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#define MAC_CMDCFG_CNT_RESET BIT(31)
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#define MAC_CMDCFG_TX_ENA_GET(v) GET_BIT_VALUE(v, 0)
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#define MAC_CMDCFG_RX_ENA_GET(v) GET_BIT_VALUE(v, 1)
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#define MAC_CMDCFG_XON_GEN_GET(v) GET_BIT_VALUE(v, 2)
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#define MAC_CMDCFG_ETH_SPEED_GET(v) GET_BIT_VALUE(v, 3)
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#define MAC_CMDCFG_PROMIS_EN_GET(v) GET_BIT_VALUE(v, 4)
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#define MAC_CMDCFG_PAD_EN_GET(v) GET_BIT_VALUE(v, 5)
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#define MAC_CMDCFG_CRC_FWD_GET(v) GET_BIT_VALUE(v, 6)
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#define MAC_CMDCFG_PAUSE_FWD_GET(v) GET_BIT_VALUE(v, 7)
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#define MAC_CMDCFG_PAUSE_IGNORE_GET(v) GET_BIT_VALUE(v, 8)
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#define MAC_CMDCFG_TX_ADDR_INS_GET(v) GET_BIT_VALUE(v, 9)
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#define MAC_CMDCFG_HD_ENA_GET(v) GET_BIT_VALUE(v, 10)
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#define MAC_CMDCFG_EXCESS_COL_GET(v) GET_BIT_VALUE(v, 11)
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#define MAC_CMDCFG_LATE_COL_GET(v) GET_BIT_VALUE(v, 12)
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#define MAC_CMDCFG_SW_RESET_GET(v) GET_BIT_VALUE(v, 13)
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#define MAC_CMDCFG_MHASH_SEL_GET(v) GET_BIT_VALUE(v, 14)
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#define MAC_CMDCFG_LOOP_ENA_GET(v) GET_BIT_VALUE(v, 15)
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#define MAC_CMDCFG_TX_ADDR_SEL_GET(v) (((v) >> 16) & 0x7)
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#define MAC_CMDCFG_MAGIC_ENA_GET(v) GET_BIT_VALUE(v, 19)
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#define MAC_CMDCFG_SLEEP_GET(v) GET_BIT_VALUE(v, 20)
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#define MAC_CMDCFG_WAKEUP_GET(v) GET_BIT_VALUE(v, 21)
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#define MAC_CMDCFG_XOFF_GEN_GET(v) GET_BIT_VALUE(v, 22)
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#define MAC_CMDCFG_CNTL_FRM_ENA_GET(v) GET_BIT_VALUE(v, 23)
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#define MAC_CMDCFG_NO_LGTH_CHECK_GET(v) GET_BIT_VALUE(v, 24)
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#define MAC_CMDCFG_ENA_10_GET(v) GET_BIT_VALUE(v, 25)
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#define MAC_CMDCFG_RX_ERR_DISC_GET(v) GET_BIT_VALUE(v, 26)
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#define MAC_CMDCFG_DISABLE_READ_TIMEOUT_GET(v) GET_BIT_VALUE(v, 27)
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#define MAC_CMDCFG_CNT_RESET_GET(v) GET_BIT_VALUE(v, 31)
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/* MDIO registers within MAC register Space
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*/
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struct altera_tse_mdio {
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u32 control; /* PHY device operation control register */
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u32 status; /* PHY device operation status register */
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u32 phy_id1; /* Bits 31:16 of PHY identifier */
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u32 phy_id2; /* Bits 15:0 of PHY identifier */
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u32 auto_negotiation_advertisement; /* Auto-negotiation
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* advertisement
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* register
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*/
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u32 remote_partner_base_page_ability;
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u32 reg6;
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u32 reg7;
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u32 reg8;
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u32 reg9;
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u32 rega;
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u32 regb;
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u32 regc;
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u32 regd;
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u32 rege;
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u32 regf;
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u32 reg10;
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u32 reg11;
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u32 reg12;
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u32 reg13;
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u32 reg14;
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u32 reg15;
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u32 reg16;
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u32 reg17;
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u32 reg18;
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u32 reg19;
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u32 reg1a;
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u32 reg1b;
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u32 reg1c;
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u32 reg1d;
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u32 reg1e;
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u32 reg1f;
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};
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/* MAC register Space. Note that some of these registers may or may not be
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* present depending upon options chosen by the user when the core was
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* configured and built. Please consult the Altera Triple Speed Ethernet User
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* Guide for details.
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*/
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struct altera_tse_mac {
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/* Bits 15:0: MegaCore function revision (0x0800). Bit 31:16: Customer
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* specific revision
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*/
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u32 megacore_revision;
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/* Provides a memory location for user applications to test the device
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* memory operation.
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*/
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u32 scratch_pad;
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/* The host processor uses this register to control and configure the
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* MAC block
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*/
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u32 command_config;
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/* 32-bit primary MAC address word 0 bits 0 to 31 of the primary
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* MAC address
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*/
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u32 mac_addr_0;
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/* 32-bit primary MAC address word 1 bits 32 to 47 of the primary
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* MAC address
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*/
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u32 mac_addr_1;
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/* 14-bit maximum frame length. The MAC receive logic */
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u32 frm_length;
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/* The pause quanta is used in each pause frame sent to a remote
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* Ethernet device, in increments of 512 Ethernet bit times
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*/
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u32 pause_quanta;
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/* 12-bit receive FIFO section-empty threshold */
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u32 rx_section_empty;
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/* 12-bit receive FIFO section-full threshold */
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u32 rx_section_full;
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/* 12-bit transmit FIFO section-empty threshold */
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u32 tx_section_empty;
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/* 12-bit transmit FIFO section-full threshold */
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u32 tx_section_full;
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/* 12-bit receive FIFO almost-empty threshold */
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u32 rx_almost_empty;
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/* 12-bit receive FIFO almost-full threshold */
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u32 rx_almost_full;
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/* 12-bit transmit FIFO almost-empty threshold */
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u32 tx_almost_empty;
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/* 12-bit transmit FIFO almost-full threshold */
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u32 tx_almost_full;
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/* MDIO address of PHY Device 0. Bits 0 to 4 hold a 5-bit PHY address */
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u32 mdio_phy0_addr;
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/* MDIO address of PHY Device 1. Bits 0 to 4 hold a 5-bit PHY address */
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u32 mdio_phy1_addr;
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/* Bit[15:0]—16-bit holdoff quanta */
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u32 holdoff_quant;
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/* only if 100/1000 BaseX PCS, reserved otherwise */
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u32 reserved1[5];
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/* Minimum IPG between consecutive transmit frame in terms of bytes */
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u32 tx_ipg_length;
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/* IEEE 802.3 oEntity Managed Object Support */
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/* The MAC addresses */
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u32 mac_id_1;
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u32 mac_id_2;
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/* Number of frames transmitted without error including pause frames */
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u32 frames_transmitted_ok;
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/* Number of frames received without error including pause frames */
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u32 frames_received_ok;
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/* Number of frames received with a CRC error */
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u32 frames_check_sequence_errors;
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/* Frame received with an alignment error */
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u32 alignment_errors;
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/* Sum of payload and padding octets of frames transmitted without
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* error
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*/
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u32 octets_transmitted_ok;
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/* Sum of payload and padding octets of frames received without error */
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u32 octets_received_ok;
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/* IEEE 802.3 oPausedEntity Managed Object Support */
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/* Number of transmitted pause frames */
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u32 tx_pause_mac_ctrl_frames;
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/* Number of Received pause frames */
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u32 rx_pause_mac_ctrl_frames;
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/* IETF MIB (MIB-II) Object Support */
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/* Number of frames received with error */
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u32 if_in_errors;
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/* Number of frames transmitted with error */
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u32 if_out_errors;
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/* Number of valid received unicast frames */
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u32 if_in_ucast_pkts;
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/* Number of valid received multicasts frames (without pause) */
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u32 if_in_multicast_pkts;
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/* Number of valid received broadcast frames */
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u32 if_in_broadcast_pkts;
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u32 if_out_discards;
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/* The number of valid unicast frames transmitted */
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u32 if_out_ucast_pkts;
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/* The number of valid multicast frames transmitted,
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* excluding pause frames
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*/
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u32 if_out_multicast_pkts;
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u32 if_out_broadcast_pkts;
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/* IETF RMON MIB Object Support */
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/* Counts the number of dropped packets due to internal errors
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* of the MAC client.
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*/
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u32 ether_stats_drop_events;
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/* Total number of bytes received. Good and bad frames. */
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u32 ether_stats_octets;
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/* Total number of packets received. Counts good and bad packets. */
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u32 ether_stats_pkts;
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/* Number of packets received with less than 64 bytes. */
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u32 ether_stats_undersize_pkts;
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/* The number of frames received that are longer than the
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* value configured in the frm_length register
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*/
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u32 ether_stats_oversize_pkts;
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/* Number of received packet with 64 bytes */
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u32 ether_stats_pkts_64_octets;
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/* Frames (good and bad) with 65 to 127 bytes */
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u32 ether_stats_pkts_65to127_octets;
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/* Frames (good and bad) with 128 to 255 bytes */
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u32 ether_stats_pkts_128to255_octets;
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/* Frames (good and bad) with 256 to 511 bytes */
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u32 ether_stats_pkts_256to511_octets;
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/* Frames (good and bad) with 512 to 1023 bytes */
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u32 ether_stats_pkts_512to1023_octets;
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/* Frames (good and bad) with 1024 to 1518 bytes */
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u32 ether_stats_pkts_1024to1518_octets;
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/* Any frame length from 1519 to the maximum length configured in the
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* frm_length register, if it is greater than 1518
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*/
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u32 ether_stats_pkts_1519tox_octets;
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/* Too long frames with CRC error */
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u32 ether_stats_jabbers;
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/* Too short frames with CRC error */
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u32 ether_stats_fragments;
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u32 reserved2;
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/* FIFO control register */
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u32 tx_cmd_stat;
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u32 rx_cmd_stat;
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/* Extended Statistics Counters */
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u32 msb_octets_transmitted_ok;
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u32 msb_octets_received_ok;
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u32 msb_ether_stats_octets;
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u32 reserved3;
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/* Multicast address resolution table, mapped in the controller address
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* space
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*/
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u32 hash_table[64];
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/* Registers 0 to 31 within PHY device 0/1 connected to the MDIO PHY
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* management interface
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*/
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struct altera_tse_mdio mdio_phy0;
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struct altera_tse_mdio mdio_phy1;
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/* 4 Supplemental MAC Addresses */
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u32 supp_mac_addr_0_0;
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u32 supp_mac_addr_0_1;
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u32 supp_mac_addr_1_0;
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u32 supp_mac_addr_1_1;
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u32 supp_mac_addr_2_0;
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u32 supp_mac_addr_2_1;
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u32 supp_mac_addr_3_0;
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u32 supp_mac_addr_3_1;
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u32 reserved4[8];
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/* IEEE 1588v2 Feature */
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u32 tx_period;
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u32 tx_adjust_fns;
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u32 tx_adjust_ns;
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u32 rx_period;
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u32 rx_adjust_fns;
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u32 rx_adjust_ns;
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u32 reserved5[42];
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};
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#define tse_csroffs(a) (offsetof(struct altera_tse_mac, a))
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/* Transmit and Receive Command Registers Bit Definitions
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*/
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#define ALTERA_TSE_TX_CMD_STAT_OMIT_CRC BIT(17)
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#define ALTERA_TSE_TX_CMD_STAT_TX_SHIFT16 BIT(18)
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#define ALTERA_TSE_RX_CMD_STAT_RX_SHIFT16 BIT(25)
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/* Wrapper around a pointer to a socket buffer,
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* so a DMA handle can be stored along with the buffer
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*/
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struct tse_buffer {
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struct list_head lh;
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struct sk_buff *skb;
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dma_addr_t dma_addr;
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u32 len;
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int mapped_as_page;
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};
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struct altera_tse_private;
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#define ALTERA_DTYPE_SGDMA 1
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#define ALTERA_DTYPE_MSGDMA 2
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/* standard DMA interface for SGDMA and MSGDMA */
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struct altera_dmaops {
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int altera_dtype;
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int dmamask;
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void (*reset_dma)(struct altera_tse_private *);
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void (*enable_txirq)(struct altera_tse_private *);
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void (*enable_rxirq)(struct altera_tse_private *);
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void (*disable_txirq)(struct altera_tse_private *);
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void (*disable_rxirq)(struct altera_tse_private *);
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void (*clear_txirq)(struct altera_tse_private *);
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void (*clear_rxirq)(struct altera_tse_private *);
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int (*tx_buffer)(struct altera_tse_private *, struct tse_buffer *);
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u32 (*tx_completions)(struct altera_tse_private *);
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void (*add_rx_desc)(struct altera_tse_private *, struct tse_buffer *);
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u32 (*get_rx_status)(struct altera_tse_private *);
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int (*init_dma)(struct altera_tse_private *);
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void (*uninit_dma)(struct altera_tse_private *);
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void (*start_rxdma)(struct altera_tse_private *);
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};
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/* This structure is private to each device.
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*/
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struct altera_tse_private {
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struct net_device *dev;
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struct device *device;
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struct napi_struct napi;
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/* MAC address space */
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struct altera_tse_mac __iomem *mac_dev;
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/* TSE Revision */
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u32 revision;
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/* mSGDMA Rx Dispatcher address space */
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void __iomem *rx_dma_csr;
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void __iomem *rx_dma_desc;
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void __iomem *rx_dma_resp;
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/* mSGDMA Tx Dispatcher address space */
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void __iomem *tx_dma_csr;
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void __iomem *tx_dma_desc;
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/* Rx buffers queue */
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struct tse_buffer *rx_ring;
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u32 rx_cons;
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u32 rx_prod;
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u32 rx_ring_size;
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u32 rx_dma_buf_sz;
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/* Tx ring buffer */
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struct tse_buffer *tx_ring;
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u32 tx_prod;
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u32 tx_cons;
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u32 tx_ring_size;
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/* Interrupts */
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u32 tx_irq;
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u32 rx_irq;
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/* RX/TX MAC FIFO configs */
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u32 tx_fifo_depth;
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u32 rx_fifo_depth;
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u32 max_mtu;
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/* Hash filter settings */
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u32 hash_filter;
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u32 added_unicast;
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/* Descriptor memory info for managing SGDMA */
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u32 txdescmem;
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u32 rxdescmem;
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dma_addr_t rxdescmem_busaddr;
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dma_addr_t txdescmem_busaddr;
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u32 txctrlreg;
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u32 rxctrlreg;
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dma_addr_t rxdescphys;
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dma_addr_t txdescphys;
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struct list_head txlisthd;
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struct list_head rxlisthd;
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/* MAC command_config register protection */
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spinlock_t mac_cfg_lock;
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/* Tx path protection */
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spinlock_t tx_lock;
|
|
/* Rx DMA & interrupt control protection */
|
|
spinlock_t rxdma_irq_lock;
|
|
|
|
/* PHY */
|
|
int phy_addr; /* PHY's MDIO address, -1 for autodetection */
|
|
phy_interface_t phy_iface;
|
|
struct mii_bus *mdio;
|
|
int oldspeed;
|
|
int oldduplex;
|
|
int oldlink;
|
|
|
|
/* ethtool msglvl option */
|
|
u32 msg_enable;
|
|
|
|
struct altera_dmaops *dmaops;
|
|
};
|
|
|
|
/* Function prototypes
|
|
*/
|
|
void altera_tse_set_ethtool_ops(struct net_device *);
|
|
|
|
static inline
|
|
u32 csrrd32(void __iomem *mac, size_t offs)
|
|
{
|
|
void __iomem *paddr = (void __iomem *)((uintptr_t)mac + offs);
|
|
return readl(paddr);
|
|
}
|
|
|
|
static inline
|
|
u16 csrrd16(void __iomem *mac, size_t offs)
|
|
{
|
|
void __iomem *paddr = (void __iomem *)((uintptr_t)mac + offs);
|
|
return readw(paddr);
|
|
}
|
|
|
|
static inline
|
|
u8 csrrd8(void __iomem *mac, size_t offs)
|
|
{
|
|
void __iomem *paddr = (void __iomem *)((uintptr_t)mac + offs);
|
|
return readb(paddr);
|
|
}
|
|
|
|
static inline
|
|
void csrwr32(u32 val, void __iomem *mac, size_t offs)
|
|
{
|
|
void __iomem *paddr = (void __iomem *)((uintptr_t)mac + offs);
|
|
|
|
writel(val, paddr);
|
|
}
|
|
|
|
static inline
|
|
void csrwr16(u16 val, void __iomem *mac, size_t offs)
|
|
{
|
|
void __iomem *paddr = (void __iomem *)((uintptr_t)mac + offs);
|
|
|
|
writew(val, paddr);
|
|
}
|
|
|
|
static inline
|
|
void csrwr8(u8 val, void __iomem *mac, size_t offs)
|
|
{
|
|
void __iomem *paddr = (void __iomem *)((uintptr_t)mac + offs);
|
|
|
|
writeb(val, paddr);
|
|
}
|
|
|
|
#endif /* __ALTERA_TSE_H__ */
|