path: root/src/include/usr/devicefw/userif.H

/* IBM_PROLOG_BEGIN_TAG                                                   */
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/* $Source: src/include/usr/devicefw/userif.H $                           */
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/* OpenPOWER HostBoot Project                                             */
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/* Contributors Listed Below - COPYRIGHT 2011,2017                        */
/* [+] Google Inc.                                                        */
/* [+] International Business Machines Corp.                              */
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/* IBM_PROLOG_END_TAG                                                     */
/** @file userif.H
 *  @brief Provides the user application interfaces for performing device
 *         access.
 *
 *  @note These interfaces should not be used directly by device drivers.
 *        Use driverif.H instead.
 */

#ifndef __DEVICEFW_USERIF
#define __DEVICEFW_USERIF

#ifndef PARSER
#include <stdint.h>
#include <errl/errlentry.H>
#include <vpd/vpd_if.H>
#include <targeting/common/targetservice.H>
#endif // not PARSER

namespace DeviceFW
{
    /** @enum AccessType
     *  @brief Access types for accessing a hardware device.
     */

    enum AccessType
    {
        SCOM = 0,
        PNOR,
        MAILBOX,
        PRESENT,
        FSI,
        SPD,
        MVPD,      // Module (processor) VPD
        CVPD,      // Centaur (memory buffer) VPD
        SCAN,
        EEPROM,
        GPIO,
        LPC,
        IPMIBT,    // As opposed to other phy's
        PVPD,
        TPM,
        SIO,
        AHB_SIO,
        DVPD,      // Direct access memory VPD

        LAST_ACCESS_TYPE,
    };

#ifndef PARSER

    /** Single argument version of the macro to provide the correct information
    *   to perform a scomRead or scomWrite. Takes in a scom address
    *
    *  @param[in] i_address - scom address that you are writing to or reading from
    */
    #define DEVICE_SCOM_ADDRESS_1_ARGS(i_address)\
        DeviceFW::SCOM, static_cast<uint64_t>((i_address)), static_cast<uint64_t>(0)

    /** 2 argument version of the macro to provide the correct information to
    *  preform a scomRead or scomWrite. Takes in a scom address and an opmode
    *
    *  @param[in] i_address - scom addr that you are writing to or reading from
    *  @param[in] i_opMode -  fapi2 opMode used by HWPs to conduct scoms in a
    *                         certain way
    */
    #define DEVICE_SCOM_ADDRESS_2_ARGS(i_address, i_opMode)\
        DeviceFW::SCOM, static_cast<uint64_t>((i_address)), static_cast<uint64_t>(i_opMode)

    /** This is the trick to figuring out if the second argument is there or not
    *   by using this in conjunction with __VA_ARGS__ , which has variable length
    *   you can select the appropriate macro for the number of arguments present
    *
    *  @param[in] arg1 - __VA_ARGS__ that you are trying to determine size of
    *  @param[in] arg2 - 2 argument version of macro
    *  @param[in] arg1 - 1 argument version of macro
    */
    #define GET_3RD_ARG(arg1, arg2, arg3, ...) arg3

    /** This is the implementation GET_3RD_ARG macro that selects either
    *   the 1 argument macro for scom address that only takes an addressing
    *   or else use the 2 arg macro that takes in an address as well as an opmode
    *
    *  @param[in] _VA_ARGS__ - __VA_ARGS__ that you are trying to determine size of
    */
    #define DEVICE_SCOM_ADDRESS_MACRO_CHOOSER(...) \
        GET_3RD_ARG(__VA_ARGS__,  DEVICE_SCOM_ADDRESS_2_ARGS, DEVICE_SCOM_ADDRESS_1_ARGS )

    /** Construct the device addressing parameters for SCOM device ops.
    *  @param[in] i_address - Scom address to operate on.
    */
    #define DEVICE_SCOM_ADDRESS(...) DEVICE_SCOM_ADDRESS_MACRO_CHOOSER(__VA_ARGS__)(__VA_ARGS__)

    /** Construct the device addressing parameters for the PRESENT device ops.
    */
    #define DEVICE_PRESENT_ADDRESS() \
        DeviceFW::PRESENT

    /**
     * Construct a PNOR DD address
     *    address = 0000_0000_0000_000c_aaaa_aaaa_aaaa_aaaa
     *      c=chip, a=address
     * @param[in] i_chip  Chip Select
     * @param[in] i_addr  Offset (from zero) into selected flash chip
     * @return  64-bit address to pass into PNOR device commands
     */
     #define DEVICE_PNOR_ADDRESS( i_chip, i_addr )  \
        DeviceFW::PNOR, ((static_cast<uint64_t>(i_chip)<<32)|static_cast<uint64_t>(i_addr))

    /** Construct the device addressing parameters for FSI device ops.
     *  @param[in] i_address - FSI address to operate on.
     */
    #define DEVICE_FSI_ADDRESS(i_address) \
        DeviceFW::FSI, static_cast<uint64_t>((i_address))

    /**
     * Construct the device addressing parameters for the SPD device ops.
     * @param[in] i_keyword - The keyword enumeration value to be accessed
     *      by the device driver.
     */
    #define DEVICE_SPD_ADDRESS( i_keyword )\
        DEVICE_SPD_FORCE_ADDRESS( i_keyword, VPD::AUTOSELECT )

    /**
     * Construct the device addressing parameters for the SPD device ops.
     * @param[in] i_keyword - The keyword enumeration value to be accessed
     *      by the device driver.
     * @param[in] i_location - The location to be used for
     *      accessing the keyword (PNOR/SEEPROM).
     */
    #define DEVICE_SPD_FORCE_ADDRESS( i_keyword, i_location )\
        DeviceFW::SPD, static_cast<uint64_t>(( i_keyword )),\
                       static_cast<uint64_t>(( i_location))

    /**
     * Construct the device addressing parameters for the MAILBOX device.
     * @param[out] o_status - Set with all available status bits
     *                        from MBOX::MboxReadStatus
     */
    #define DEVICE_MBOX_ADDRESS(o_status) \
        DeviceFW::MAILBOX, static_cast<uint64_t*>((o_status))

    /**
     * Construct the device addressing parameters for the MVPD device ops.
     * @param[in] i_record - The enumeration of the MVPD record to access.
     * @param[in] i_keyword - The enumeration of the MVPD keyword, located
     *      within the i_record Record to access.
     */
    #define DEVICE_MVPD_ADDRESS( i_record, i_keyword )\
        DEVICE_MVPD_FORCE_ADDRESS( i_record, i_keyword, VPD::AUTOSELECT )

    /**
     * Construct the device addressing parameters for the MVPD device ops.
     * @param[in] i_record - The enumeration of the MVPD record to access.
     * @param[in] i_keyword - The enumeration of the MVPD keyword, located
     *      within the i_record Record to access.
     * @param[in] i_location - The location of the data (PNOR/SEEPROM)
            see vpd_if.H
     */
    #define DEVICE_MVPD_FORCE_ADDRESS( i_record, i_keyword, i_location )\
        DeviceFW::MVPD, static_cast<uint64_t>(( i_record )),\
            static_cast<uint64_t>(( i_keyword )),\
            static_cast<uint64_t>(( i_location ))

    /**
     * Construct the device addressing parameters for the CVPD device ops.
     * @param[in] i_record - The enumeration of the CVPD record to access.
     * @param[in] i_keyword - The enumeration of the CVPD keyword, located
     *      within the i_record Record to access.
     */
    #define DEVICE_CVPD_ADDRESS( i_record, i_keyword )\
        DEVICE_CVPD_FORCE_ADDRESS( i_record, i_keyword, VPD::AUTOSELECT )

    /**
     * Construct the device addressing parameters for the CVPD device ops.
     * @param[in] i_record - The enumeration of the CVPD record to access.
     * @param[in] i_keyword - The enumeration of the CVPD keyword, located
     *      within the i_record Record to access.
     * @param[in] i_location - The location of the data (PNOR/SEEPROM)
            see vpd_if.H
     */
    #define DEVICE_CVPD_FORCE_ADDRESS( i_record, i_keyword, i_location )\
        DeviceFW::CVPD, static_cast<uint64_t>(( i_record )),\
            static_cast<uint64_t>(( i_keyword )),\
            static_cast<uint64_t>(( i_location ))

    /**
     * Construct the device addressing parameters for the PVPD device ops.
     * @param[in] i_record - The enumeration of the PVPD record to access.
     * @param[in] i_keyword - The enumeration of the PVPD keyword, located
     *      within the i_record Record to access.
     */
    #define DEVICE_PVPD_ADDRESS( i_record, i_keyword )\
        DEVICE_PVPD_FORCE_ADDRESS( i_record, i_keyword, VPD::AUTOSELECT )

    /**
     * Construct the device addressing parameters for the PVPD device ops.
     * @param[in] i_record - The enumeration of the PVPD record to access.
     * @param[in] i_keyword - The enumeration of the PVPD keyword, located
     *      within the i_record Record to access.
     * @param[in] i_location - The location of the data (PNOR/SEEPROM)
            see vpd_if.H
     */
    #define DEVICE_PVPD_FORCE_ADDRESS( i_record, i_keyword, i_location )\
        DeviceFW::PVPD, static_cast<uint64_t>(( i_record )),\
            static_cast<uint64_t>(( i_keyword )),\
            static_cast<uint64_t>(( i_location ))

    /**
     * Construct the device addressing parameters for the DVPD (Direct access
     * memory VPD) device ops.
     * @param[in] i_record - The enumeration of the DVPD record to access.
     * @param[in] i_keyword - The enumeration of the DVPD keyword, located
     *      within the i_record Record to access.
     */
    #define DEVICE_DVPD_ADDRESS( i_record, i_keyword )\
        DEVICE_DVPD_FORCE_ADDRESS( i_record, i_keyword, VPD::AUTOSELECT )

    /**
     * Construct the device addressing parameters for the DVPD device ops.
     * @param[in] i_record - The enumeration of the DVPD record to access.
     * @param[in] i_keyword - The enumeration of the DVPD keyword, located
     *      within the i_record Record to access.
     * @param[in] i_location - The location of the data (PNOR/SEEPROM)
            see vpd_if.H
     */
    #define DEVICE_DVPD_FORCE_ADDRESS( i_record, i_keyword, i_location )\
        DeviceFW::DVPD, static_cast<uint64_t>(( i_record )),\
            static_cast<uint64_t>(( i_keyword )),\
            static_cast<uint64_t>(( i_location ))
    /**
     * Construct the device addressing parameters for the SCAN device ops.
     * @param[in] i_ring - The ring address to scan
     * @param[in] i_ringlen - The length of the ring to scan in bits
     *                 NOTE: This value is the scanring length must
     *                       match the scandef file value.
     * @param[in] i_flag - Specific requests on the scan such as
     *             check the header, or set pulse option.
     *     Flag options are located in: src/include/usr/scan/scanif.H
     */
    #define DEVICE_SCAN_ADDRESS( i_ring, i_ringlen, i_flag )\
        DeviceFW::SCAN, static_cast<uint64_t>(( i_ring )),\
            static_cast<uint64_t>(( i_ringlen )),\
            static_cast<uint64_t>(( i_flag ))

      /**
        * Construct the device addressing parameters for the SCAN device ops.
        * @param[in] i_ringID   - ring ID
        * @param[in] i_ringMode - Ring Mode
        *
        * @param[in] i_flag    - flags
        * PUT_RING_FROM_IMAGE_COMMAND - is for Put Ring from Image command
        */

       #define PUT_RING_FROM_IMAGE_COMMAND (0xFFFFFFFFFFFFFFFF)
       #define DEVICE_SCAN_SBE_ADDRESS( i_ringID, i_ringMode, i_flag )\
           DeviceFW::SCAN, static_cast<uint64_t>(( i_ringID )),\
               static_cast<uint64_t>(( i_ringMode )),\
               static_cast<uint64_t>(( i_flag )),\
               static_cast<uint64_t>(PUT_RING_FROM_IMAGE_COMMAND)

    /**
     * Construct the device addressing parameters for the LPC device ops.
     * @param[in] i_trans_type - LPC transaction type.
     * @param[in] i_address - LPC address to operate on.
     *     Flag options are located in: src/include/usr/lpc/lpcif.H
     *
     */
    #define DEVICE_LPC_ADDRESS( i_trans_type, i_address )\
        DeviceFW::LPC, static_cast<uint64_t>(( i_trans_type )),\
            static_cast<uint64_t>(( i_address ))

    /**
     * Construct the device addressing parameters for the SIO device ops.
     * @param[i] i_device - SIO device to operate on
     * @param[i] i_address - SIO address to operate on
     */
    #define DEVICE_SIO_ADDRESS(i_device, i_address)\
        DeviceFW::SIO, static_cast<uint64_t>((i_device)),\
            static_cast<uint64_t>((i_address))

    /**
     * Construct the device addressing parameters for the AHB_SIO device ops.
     * @param[i] i_address - AHB_SIO address to operate on
     */
    #define DEVICE_AHB_SIO_ADDRESS(i_address)\
        DeviceFW::AHB_SIO, static_cast<uint64_t>((i_address))

    /**
     * Construct the device addressing parameters for the EEPROM device ops.
     * @param[in] i_eeprom_enum - The chip number of the EEPROM to access. See
     *                            eeprom_chip_types_t in eepromif.H
     * @param[in] i_offset - The internal offset of the EEPROM slave device.
     */
    #define DEVICE_EEPROM_ADDRESS( i_eeprom_enum, i_offset )\
        DeviceFW::EEPROM, static_cast<uint64_t>(( i_eeprom_enum )),\
            static_cast<uint64_t>(( i_offset ))

    /**
     * Construct the device addressing parameters for the TPM device ops.
     * @param[in] i_tpm_operation The TPM operation to perform. See
     *                            tpm_op_types_t in tpmddif.H
     * @param[in] i_command_len Command length to write during transmit
     *                            operations
     * @param[in] i_locality The TPM locality to use. See tpm_locality_t
     *                            in tpmddif.H
     */
    #define DEVICE_TPM_ADDRESS( i_tpm_op, i_command_len, i_locality )  \
        DeviceFW::TPM,\
            static_cast<uint64_t>(( i_tpm_op )),\
            static_cast<uint64_t>(( i_command_len )),\
            static_cast<uint64_t>(( i_locality ))

    /**
     * Construct the device addressing parameters for the GPIO port extender ops
     * @param[in] i_gpio_num - The port extender device type.
     * @param[in] i_gpio_pin = The GPIO port address
     */
    #define DEVICE_GPIO_ADDRESS( i_device_type , i_gpio_portAddr) \
        DeviceFW::GPIO, static_cast<uint64_t>(( i_device_type )),\
            static_cast<uint64_t>(( i_gpio_portAddr ))

    /**
     *  @brief Perform a hardware read operation.
     *
     *  @param[in]     i_target     Device target to operate on.
     *  @param[out]    o_buffer     Buffer to put result data into.
     *  @param[in,out] io_buflen    Length of the buffer on input, length of
     *                              data on output (in bytes).
     *  @param[in]     i_accessType Operation to perform on target.
     *  @param[in]     ...          Operation specific addressing parameters.
     *
     *  @return NULL - No error.
     *  @return Non-NULL - An error handle when error has occurred, typically
     *                     passed directly from device driver but potentially
     *                     created by the device framework as in the case of
     *                     not finding an installed driver for the desired
     *                     operation.
     *
     *  It is expected that the callers will use operation specific macros to
     *  assist in the AccessType parameter and variable arguments.
     *
     *  <PRE>
     *  Example usage:
     *      errl = deviceRead(chip, buf, bufsize, DEVICE_SCOM_ADDRESS(0x42));
     *  </PRE>
     *
     */
    errlHndl_t deviceRead(TARGETING::Target* i_target,
                          void* o_buffer, size_t& io_buflen,
                          AccessType i_accessType, ...);

    /**
     *  @brief Perform a hardware write operation.
     *
     *  @param[in]     i_target     Device target to operate on.
     *  @param[in]     i_buffer     Buffer to get write data from.
     *  @param[in,out] io_buflen    Length of the buffer on input, length of
     *                              data on output (in bytes).
     *  @param[in]     i_accessType Operation to perform on target.
     *  @param[in]     ...          Operation specific addressing parameters.
     *
     *  @return NULL - No error.
     *  @return Non-NULL - An error handle when error has occurred, typically
     *                     passed directly from device driver but potentially
     *                     created by the device framework as in the case of
     *                     not finding an installed driver for the desired
     *                     operation.
     *
     *  It is expected that the callers will use operation specific macros to
     *  assist in the AccessType parameter and variable arguments.
     *
     *  <PRE>
     *  Example usage:
     *      errl = deviceWrite(chip, buf, bufsize, DEVICE_SCOM_ADDRESS(0x42));
     *  </PRE>
     *
     */
    errlHndl_t deviceWrite(TARGETING::Target* i_target,
                           void* i_buffer, size_t& io_buflen,
                           AccessType i_accessType, ...);
#endif // not PARSER

};


#endif