atl_hw.c

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/** @file
 *
 * Marvell AQtion family network card driver, hardware-specific functions.
 *
 * Copyright(C) 2017-2024 Marvell
 *
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:

 *  1. Redistributions of source code must retain the above copyright notice,
 *     this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright notice,
 *     this list of conditions and the following disclaimer in the documentation
 *     and/or other materials provided with the distribution.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS
 *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 *  TO,THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 *   PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR HOLDER OR
 *   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 *   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 *   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 *   OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 *   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 *   OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 *   EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

FILE_LICENCE ( BSD2 );

#include <string.h>
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <byteswap.h>
#include <ipxe/pci.h>
#include "aqc1xx.h"
#include "atl_hw.h"
#include <compiler.h>


int atl_hw_reset_flb_ ( struct atl_nic *nic ) {
        uint32_t val;
        int k = 0;

        ATL_WRITE_REG ( ATL_GLB_CTRL2_MBOX_ERR_UP_RUN_STALL, ATL_GLB_CTRL2 );
        mdelay ( ATL_DELAY_50_MNS );

        /* Cleanup SPI */
        val = ATL_READ_REG ( ATL_GLB_NVR_PROV4 );
        ATL_WRITE_REG ( val | ATL_GBL_NVR_PROV4_RESET, ATL_GLB_NVR_PROV4 );

        ATL_WRITE_REG( ( ATL_READ_REG ( ATL_GLB_STD_CTRL ) &
                      ~ATL_GLB_CTRL_RST_DIS ) | ATL_GLB_STD_CTRL_RESET,
                        ATL_GLB_STD_CTRL );

        /* Kickstart MAC */
        ATL_WRITE_REG ( ATL_GLB_CTRL2_FW_RESET, ATL_GLB_CTRL2 );
        ATL_WRITE_REG ( ATL_MIF_PWR_GATING_EN_CTRL_RESET,
                        ATL_MIF_PWR_GATING_EN_CTRL );

        ATL_WRITE_REG ( ATL_GEN_PROV9_ENABLE, ATL_GEN_PROV9 );

        /* Reset SPI again because of possible interrupted SPI burst */
        val = ATL_READ_REG ( ATL_GLB_NVR_PROV4 );
        ATL_WRITE_REG ( val | ATL_GBL_NVR_PROV4_RESET, ATL_GLB_NVR_PROV4 );
        mdelay ( ATL_DELAY_10_MNS );
        /* Clear SPI reset state */
        ATL_WRITE_REG ( val & ~ATL_GBL_NVR_PROV4_RESET, ATL_GLB_NVR_PROV4 );

        /* MAC Kickstart */
        ATL_WRITE_REG ( ATL_GLB_CTRL2_MAC_KICK_START, ATL_GLB_CTRL2 );

        for (k = 0; k < 1000; k++) {
                uint32_t flb_status = ATL_READ_REG ( ATL_MPI_DAISY_CHAIN_STS );

                flb_status = flb_status & FLB_LOAD_STS;
                if ( flb_status )
                        break;
                mdelay ( ATL_DELAY_10_MNS );
        }
        if ( k == 1000 ) {
                DBGC (nic, "MAC kickstart failed\n" );
                return -EIO;
        }

        /* FW reset */
        ATL_WRITE_REG ( ATL_GLB_CTRL2_FW_RESET, ATL_GLB_CTRL2 );
        mdelay ( ATL_DELAY_50_MNS );

        ATL_WRITE_REG ( ATL_GBL_MCP_SEM1_RELEASE, ATL_GLB_MCP_SEM1 );

        /* Global software reset*/
        ATL_WRITE_REG ( ATL_READ_REG ( ATL_RX_CTRL ) &
                        ~ATL_RX_CTRL_RST_DIS, ATL_RX_CTRL );
        ATL_WRITE_REG ( ATL_READ_REG ( ATL_TX_CTRL ) &
                        ~ATL_TX_CTRL_RST_DIS, ATL_TX_CTRL );

        ATL_WRITE_REG ( ATL_READ_REG ( ATL_MAC_PHY_CTRL ) &
                        ~ATL_MAC_PHY_CTRL_RST_DIS, ATL_MAC_PHY_CTRL );

        ATL_WRITE_REG ( ( ATL_READ_REG ( ATL_GLB_STD_CTRL ) &
                        ~ATL_GLB_CTRL_RST_DIS ) | ATL_GLB_STD_CTRL_RESET,
                        ATL_GLB_STD_CTRL );

        for (k = 0; k < 1000; k++) {
                u32 fw_state = ATL_READ_REG ( ATL_FW_VER );

                if ( fw_state )
                        break;
                mdelay ( ATL_DELAY_10_MNS );
        }
        if ( k == 1000 ) {
                DBGC ( nic, "FW kickstart failed\n" );
                return -EIO;
        }
        /* Old FW requires fixed delay after init */
        mdelay ( ATL_DELAY_15_MNS );

        return 0;
}

int atl_hw_reset_rbl_ ( struct atl_nic *nic ) {
        uint32_t val, rbl_status;
        int k;

        ATL_WRITE_REG ( ATL_GLB_CTRL2_MBOX_ERR_UP_RUN_STALL, ATL_GLB_CTRL2 );
        ATL_WRITE_REG ( ATL_GBL_MCP_SEM1_RELEASE, ATL_GLB_MCP_SEM1 );
        ATL_WRITE_REG ( ATL_MIF_PWR_GATING_EN_CTRL_RESET,
                        ATL_MIF_PWR_GATING_EN_CTRL );

        /* Alter RBL status */
        ATL_WRITE_REG ( POISON_SIGN, ATL_MPI_BOOT_EXIT_CODE );

        /* Cleanup SPI */
        val = ATL_READ_REG ( ATL_GLB_NVR_PROV4 );
        ATL_WRITE_REG ( val | ATL_GBL_NVR_PROV4_RESET, ATL_GLB_NVR_PROV4 );

        /* Global software reset*/
        ATL_WRITE_REG ( ATL_READ_REG ( ATL_RX_CTRL ) & ~ATL_RX_CTRL_RST_DIS,
                        ATL_RX_CTRL );
        ATL_WRITE_REG ( ATL_READ_REG ( ATL_TX_CTRL ) & ~ATL_TX_CTRL_RST_DIS,
                        ATL_TX_CTRL );
        ATL_WRITE_REG ( ATL_READ_REG ( ATL_MAC_PHY_CTRL ) &
                        ~ATL_MAC_PHY_CTRL_RST_DIS, ATL_MAC_PHY_CTRL );

        ATL_WRITE_REG ( ( ATL_READ_REG ( ATL_GLB_STD_CTRL ) &
                        ~ATL_GLB_CTRL_RST_DIS ) | ATL_GLB_STD_CTRL_RESET,
                        ATL_GLB_STD_CTRL );

        ATL_WRITE_REG ( ATL_GLB_CTRL2_MBOX_ERR_UP_RUN_NORMAL, ATL_GLB_CTRL2 );

        /* Wait for RBL boot */
        for ( k = 0; k < 1000; k++ ) {
                rbl_status = ATL_READ_REG ( ATL_MPI_BOOT_EXIT_CODE ) & 0xFFFF;
                if ( rbl_status && rbl_status != POISON_SIGN )
                        break;
                mdelay ( ATL_DELAY_10_MNS );
        }
        if ( !rbl_status || rbl_status == POISON_SIGN ) {
                DBGC ( nic, "RBL Restart failed\n" );
                return -EIO;
        }

        if ( rbl_status == FW_NOT_SUPPORT )
                return -ENOTSUP;

        for ( k = 0; k < 1000; k++ ) {
                u32 fw_state = ATL_READ_REG ( ATL_FW_VER );

                if ( fw_state )
                        break;
                mdelay ( ATL_DELAY_10_MNS );
        }
        if ( k == 1000 ) {
                DBGC ( nic, "FW kickstart failed\n" );
                return -EIO;
        }
        /* Old FW requires fixed delay after init */
        mdelay ( ATL_DELAY_15_MNS );

        return 0;
}

int atl_hw_reset ( struct atl_nic *nic ) {
        uint32_t boot_exit_code = 0;
        uint32_t k;
        int rbl_enabled;
        uint32_t fw_ver;
        uint32_t sem_timeout;

        for ( k = 0; k < 1000; ++k ) {
                uint32_t flb_status = ATL_READ_REG ( ATL_MPI_DAISY_CHAIN_STS );
                boot_exit_code = ATL_READ_REG ( ATL_MPI_BOOT_EXIT_CODE );
                if ( flb_status != ATL_MPI_DAISY_CHAIN_STS_ERROR_STATUS ||
                        boot_exit_code != 0 )
                        break;
        }

        if ( k == 1000 ) {
                DBGC ( nic, "Neither RBL nor FLB firmware started\n" );
                return -ENOTSUP;
        }

        rbl_enabled = ( boot_exit_code != 0 );

        fw_ver = ATL_READ_REG ( ATL_FW_VER );
        if ( ( ( fw_ver >> 24 ) & 0xFF ) >= 4 ) {
                sem_timeout = ATL_READ_REG ( ATL_SEM_TIMEOUT );
                if ( sem_timeout > ATL_SEM_MAX_TIMEOUT )
                        sem_timeout = ATL_SEM_MAX_TIMEOUT;

                for ( k = 0; k < sem_timeout; ++k ) {
                        if ( ATL_READ_REG ( ATL_GLB_MCP_SEM4 ) )
                                break;

                        mdelay ( ATL_DELAY_1_MNS );
                }
                for ( k = 0; k < sem_timeout; ++k ) {
                        if ( ATL_READ_REG ( ATL_GLB_MCP_SEM5 ) )
                                break;

                        mdelay ( ATL_DELAY_1_MNS );
                }
        }


        if ( rbl_enabled )
                return atl_hw_reset_rbl_ ( nic );
        else
                return atl_hw_reset_flb_ ( nic );
}

int atl_hw_start ( struct atl_nic *nic ) {
        ATL_WRITE_REG ( ATL_LINK_ADV_AUTONEG, ATL_LINK_ADV );
        return 0;
}

int atl_hw_stop ( struct atl_nic *nic ) {
        ATL_WRITE_REG ( ATL_SHUT_LINK, ATL_LINK_ADV );
        return 0;
}

int atl_hw_get_link ( struct atl_nic *nic ) {
        return ( ATL_READ_REG ( ATL_LINK_ST) & ATL_LINK_ADV_AUTONEG ) != 0;
}

int atl_hw_read_mem ( struct atl_nic *nic, uint32_t addr, uint32_t *buffer,
                    uint32_t size ) {
        uint32_t i;

        for ( i = 0; i < 100; ++i ) {
                if ( ATL_READ_REG( ATL_SEM_RAM ) )
                        break;
                mdelay ( ATL_DELAY_1_MNS );
        }
        if ( i == 100 ) {
                DBGC ( nic, "Semaphore Register not set\n" );
                return -EIO;
        }

        ATL_WRITE_REG ( addr, ATL_MBOX_CTRL3 );

        for ( i = 0; i < size; ++i, addr += 4 ) {
                uint32_t j;

                ATL_WRITE_REG ( ATL_MBOX_CTRL1_START_MBOX_OPT, ATL_MBOX_CTRL1 );
                for ( j = 0; j < 10000; ++j ) {
                        if ( ATL_READ_REG (ATL_MBOX_CTRL3 ) != addr )
                                break;
                        udelay ( ATL_DELAY_10_MNS );
                }
                if ( j == 10000 ) {
                        DBGC ( nic, "Reading from CTRL3 Register Failed\n" );
                        return -EIO;
                }

                buffer[i] = ATL_READ_REG ( ATL_MBOX_CTRL5 );
        }

        ATL_WRITE_REG( ATL_SEM_RAM_RESET, ATL_SEM_RAM );

        return 0;
}

int atl_hw_get_mac ( struct atl_nic *nic, uint8_t *mac ) {
        uint32_t mac_addr[2] = {0};
        int err = 0;
        uint32_t efuse_addr = ATL_READ_REG ( ATL_GLB_MCP_SP26 );

        if ( efuse_addr != 0) {
                uint32_t mac_efuse_addr = efuse_addr + 40 * sizeof ( uint32_t );
                err = atl_hw_read_mem ( nic, mac_efuse_addr, mac_addr, 2 );
                if ( err != 0 )
                        return err;

                mac_addr[0] = cpu_to_be32 ( mac_addr[0] );
                mac_addr[1] = cpu_to_be32 ( mac_addr[1] );

                memcpy ( mac, ( uint8_t * )mac_addr, ATL_MAC_ADDRESS_SIZE );
        }
        return 0;
}

struct atl_hw_ops atl_hw = {
        .reset = atl_hw_reset,
        .start = atl_hw_start,
        .stop = atl_hw_stop,
        .get_link = atl_hw_get_link,
        .get_mac = atl_hw_get_mac,
};