/************************************************************
 * <bsn.cl fy=2014 v=onl>
 *
 *           Copyright 2014 Big Switch Networks, Inc.
 *           Copyright 2013 Accton Technology Corporation.
 *
 * Licensed under the Eclipse Public License, Version 1.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 *        http://www.eclipse.org/legal/epl-v10.html
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific
 * language governing permissions and limitations under the
 * License.
 *
 * </bsn.cl>
 ************************************************************
 *
 *
 *
 ***********************************************************/
#include <onlp/platformi/sfpi.h>
#include <onlplib/i2c.h>
#include <onlplib/file.h>
#include "x86_64_accton_as4222_28pe_int.h"
#include "x86_64_accton_as4222_28pe_log.h"

#define PORT_EEPROM_FORMAT              "/sys/bus/i2c/devices/%d-0050/eeprom"
#define MODULE_PRESENT_FORMAT		    "/sys/bus/i2c/devices/%d-00%d/module_present_%d"
#define MODULE_RXLOS_FORMAT             "/sys/bus/i2c/devices/%d-00%d/module_rx_los_%d"
#define MODULE_TXFAULT_FORMAT           "/sys/bus/i2c/devices/%d-00%d/module_tx_fault_%d"
#define MODULE_TXDISABLE_FORMAT         "/sys/bus/i2c/devices/%d-00%d/module_tx_disable_%d"

int sfp_map_bus[] ={5, 6, 7, 8};

/************************************************************
 *
 * SFPI Entry Points
 *
 ***********************************************************/

int
onlp_sfpi_init(void)
{
    /* Called at initialization time */
    return ONLP_STATUS_OK;
}
int
onlp_sfpi_map_bus_index(int port)
{
    if(port < 24 || port >=27)
        return ONLP_STATUS_E_INTERNAL;
    port= port-24;
    return sfp_map_bus[port];
}

int
onlp_sfpi_bitmap_get(onlp_sfp_bitmap_t* bmap)
{
    /*
     * Ports {24, 27}
     */
    int p;

    for(p = 24; p <= 27; p++) {
        AIM_BITMAP_SET(bmap, p);
    }

    return ONLP_STATUS_OK;
}

int
onlp_sfpi_is_present(int port)
{
    /*
     * Return 1 if present.
     * Return 0 if not present.
     * Return < 0 if error.
     */
    int present;
    int bus, addr;

    if(port <24 || port > 27)
        return ONLP_STATUS_E_INTERNAL;
    addr = 60;
    bus  = 1;
	if (onlp_file_read_int(&present, MODULE_PRESENT_FORMAT, bus, addr, (port+1)) < 0) {
        AIM_LOG_ERROR("Unable to read present status from port(%d)\r\n", port);
        return ONLP_STATUS_E_INTERNAL;
    }

    return present;
}

int
onlp_sfpi_presence_bitmap_get(onlp_sfp_bitmap_t* dst)
{
    
    return ONLP_STATUS_E_UNSUPPORTED;
}

int
onlp_sfpi_rx_los_bitmap_get(onlp_sfp_bitmap_t* dst)
{
    uint32_t bytes[4];
    int i = 0;
    uint64_t rx_los_all = 0;
    
    bytes[0]=bytes[1]=bytes[2]=0x0;
    bytes[3]=0xf;
    for(i = AIM_ARRAYSIZE(bytes)-1; i >= 0; i--) {
        rx_los_all <<= 8;
        rx_los_all |= bytes[i];
    }
    /* Populate bitmap */
    for(i = 0; rx_los_all; i++) {
        AIM_BITMAP_MOD(dst, i, (rx_los_all & 1));
        rx_los_all >>= 1;
    }

    return ONLP_STATUS_OK;
}

int
onlp_sfpi_eeprom_read(int port, uint8_t data[256])
{
    /*
     * Read the SFP eeprom into data[]
     *
     * Return MISSING if SFP is missing.
     * Return OK if eeprom is read
     */
    int size = 0;
    if(port <24 || port > 27)
        return ONLP_STATUS_E_INTERNAL;
    memset(data, 0, 256);

	if(onlp_file_read(data, 256, &size, PORT_EEPROM_FORMAT, onlp_sfpi_map_bus_index(port)) != ONLP_STATUS_OK) {
        AIM_LOG_ERROR("Unable to read eeprom from port(%d)\r\n", port);
        return ONLP_STATUS_E_INTERNAL;
    }

    if (size != 256) {
        AIM_LOG_ERROR("Unable to read eeprom from port(%d), size is different!\r\n", port);
        return ONLP_STATUS_E_INTERNAL;
    }

    return ONLP_STATUS_OK;
}

int
onlp_sfpi_dom_read(int port, uint8_t data[256])
{
    FILE* fp;
    char file[64] = {0};

    sprintf(file, PORT_EEPROM_FORMAT, onlp_sfpi_map_bus_index(port));
    fp = fopen(file, "r");
    if(fp == NULL) {
        AIM_LOG_ERROR("Unable to open the eeprom device file of port(%d)", port);
        return ONLP_STATUS_E_INTERNAL;
    }

    if (fseek(fp, 256, SEEK_CUR) != 0) {
        fclose(fp);
        AIM_LOG_ERROR("Unable to set the file position indicator of port(%d)", port);
        return ONLP_STATUS_E_INTERNAL;
    }

    int ret = fread(data, 1, 256, fp);
    fclose(fp);
    if (ret != 256) {
        AIM_LOG_ERROR("Unable to read the module_eeprom device file of port(%d)", port);
        return ONLP_STATUS_E_INTERNAL;
    }

    return ONLP_STATUS_OK;
}

int
onlp_sfpi_dev_readb(int port, uint8_t devaddr, uint8_t addr)
{
    int bus = onlp_sfpi_map_bus_index(port);
    return onlp_i2c_readb(bus, devaddr, addr, ONLP_I2C_F_FORCE);
}

int
onlp_sfpi_dev_writeb(int port, uint8_t devaddr, uint8_t addr, uint8_t value)
{
    int bus = onlp_sfpi_map_bus_index(port);
    return onlp_i2c_writeb(bus, devaddr, addr, value, ONLP_I2C_F_FORCE);
}

int
onlp_sfpi_dev_readw(int port, uint8_t devaddr, uint8_t addr)
{
    int bus = onlp_sfpi_map_bus_index(port);
    return onlp_i2c_readw(bus, devaddr, addr, ONLP_I2C_F_FORCE);
}

int
onlp_sfpi_dev_writew(int port, uint8_t devaddr, uint8_t addr, uint16_t value)
{
    int bus = onlp_sfpi_map_bus_index(port);
    return onlp_i2c_writew(bus, devaddr, addr, value, ONLP_I2C_F_FORCE);
}

int
onlp_sfpi_control_set(int port, onlp_sfp_control_t control, int value)
{
    int rv;
    int addr = 60;
    int bus  = 1;

    if(port <24 || port >27)
        return ONLP_STATUS_E_UNSUPPORTED;
    
    switch(control)
    {
        case ONLP_SFP_CONTROL_TX_DISABLE:
            {
                if (onlp_file_write_int(0, MODULE_TXDISABLE_FORMAT, bus, addr, (port+1)) < 0) {
                    AIM_LOG_ERROR("Unable to set tx_disable status to port(%d)\r\n", port);
                    rv = ONLP_STATUS_E_INTERNAL;   
                }                 
                else
                   rv = ONLP_STATUS_OK;
                break;
            }
        default:
            rv = ONLP_STATUS_E_UNSUPPORTED;
            break;
    }

    return rv;
}

int
onlp_sfpi_control_get(int port, onlp_sfp_control_t control, int* value)
{
    int rv;
    int addr = 60;
    int bus  = 1;
    
    if(port <24 || port >27)
        return ONLP_STATUS_E_UNSUPPORTED;
    switch(control)
        {
        case ONLP_SFP_CONTROL_RX_LOS:
            {                
                if (onlp_file_read_int(value, MODULE_RXLOS_FORMAT, bus, addr, (port+1)) < 0)
                {
                    AIM_LOG_ERROR("Unable to read rx_loss status from port(%d)\r\n", port);
                    rv = ONLP_STATUS_E_INTERNAL;
                }
                else
                    rv = ONLP_STATUS_OK;
                break;
            }
        case ONLP_SFP_CONTROL_TX_FAULT:
            {
                if (onlp_file_read_int(value, MODULE_TXFAULT_FORMAT, bus, addr, (port+1)) < 0) {
                    AIM_LOG_ERROR("Unable to read tx_fault status from port(%d)\r\n", port);
                    rv = ONLP_STATUS_E_INTERNAL;
                }
                else
                    rv = ONLP_STATUS_OK;
                break;
            }
        case ONLP_SFP_CONTROL_TX_DISABLE:
            {                
                if (onlp_file_read_int(value, MODULE_TXDISABLE_FORMAT, bus, addr, (port+1)) < 0) {
                    AIM_LOG_ERROR("Unable to read tx_disabled status from port(%d)\r\n", port);
                    rv = ONLP_STATUS_E_INTERNAL;
                }
                else
                    rv = ONLP_STATUS_OK;
                break;
            }
        default:
            rv = ONLP_STATUS_E_UNSUPPORTED;
        }

    return rv;
}

int
onlp_sfpi_denit(void)
{
    return ONLP_STATUS_OK;
}
