Quelle cvmx-spi.h
Sprache: C
/***********************license start***************
* Author : Cavium Networks
*
* Contact : support @ caviumnetworks . com
* This file is part of the OCTEON SDK
*
* Copyright ( c ) 2003 - 2008 Cavium Networks
*
* This file is free software ; you can redistribute it and / or modify
* it under the terms of the GNU General Public License , Version 2 , as
* published by the Free Software Foundation .
*
* This file is distributed in the hope that it will be useful , but
* AS - IS and WITHOUT ANY WARRANTY ; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE , TITLE , or
* NONINFRINGEMENT . See the GNU General Public License for more
* details .
*
* You should have received a copy of the GNU General Public License
* along with this file ; if not , write to the Free Software
* Foundation , Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA
* or visit http : //www.gnu.org/licenses/.
*
* This file may also be available under a different license from Cavium .
* Contact Cavium Networks for more information
***********************license end**************************************/
/*
*
* This file contains defines for the SPI interface
*/
#ifndef __CVMX_SPI_H__
#define __CVMX_SPI_H__
#include <asm /octeon/cvmx-gmxx-defs.h>
/* CSR typedefs have been moved to cvmx-csr-*.h */
typedef enum {
CVMX_SPI_MODE_UNKNOWN = 0 ,
CVMX_SPI_MODE_TX_HALFPLEX = 1 ,
CVMX_SPI_MODE_RX_HALFPLEX = 2 ,
CVMX_SPI_MODE_DUPLEX = 3
} cvmx_spi_mode_t;
/** Callbacks structure to customize SPI4 initialization sequence */
typedef struct {
/** Called to reset SPI4 DLL */
int (*reset_cb) (int interface, cvmx_spi_mode_t mode);
/** Called to setup calendar */
int (*calendar_setup_cb) (int interface, cvmx_spi_mode_t mode,
int num_ports);
/** Called for Tx and Rx clock detection */
int (*clock_detect_cb) (int interface, cvmx_spi_mode_t mode,
int timeout);
/** Called to perform link training */
int (*training_cb) (int interface, cvmx_spi_mode_t mode, int timeout);
/** Called for calendar data synchronization */
int (*calendar_sync_cb) (int interface, cvmx_spi_mode_t mode,
int timeout);
/** Called when interface is up */
int (*interface_up_cb) (int interface, cvmx_spi_mode_t mode);
} cvmx_spi_callbacks_t;
/**
* Return true if the supplied interface is configured for SPI
*
* @ interface : Interface to check
* Returns True if interface is SPI
*/
static inline int cvmx_spi_is_spi_interface(int interface)
{
uint64_t gmxState = cvmx_read_csr(CVMX_GMXX_INF_MODE(interface));
return (gmxState & 0 x2) && (gmxState & 0 x1);
}
/**
* Initialize and start the SPI interface .
*
* @ interface : The identifier of the packet interface to configure and
* use as a SPI interface .
* @ mode : The operating mode for the SPI interface . The interface
* can operate as a full duplex ( both Tx and Rx data paths
* active ) or as a halfplex ( either the Tx data path is
* active or the Rx data path is active , but not both ) .
* @ timeout : Timeout to wait for clock synchronization in seconds
* @ num_ports : Number of SPI ports to configure
*
* Returns Zero on success , negative of failure .
*/
extern int cvmx_spi_start_interface(int interface, cvmx_spi_mode_t mode,
int timeout, int num_ports);
/**
* This routine restarts the SPI interface after it has lost synchronization
* with its corespondant system .
*
* @ interface : The identifier of the packet interface to configure and
* use as a SPI interface .
* @ mode : The operating mode for the SPI interface . The interface
* can operate as a full duplex ( both Tx and Rx data paths
* active ) or as a halfplex ( either the Tx data path is
* active or the Rx data path is active , but not both ) .
* @ timeout : Timeout to wait for clock synchronization in seconds
* Returns Zero on success , negative of failure .
*/
extern int cvmx_spi_restart_interface(int interface, cvmx_spi_mode_t mode,
int timeout);
/**
* Return non - zero if the SPI interface has a SPI4000 attached
*
* @ interface : SPI interface the SPI4000 is connected to
*
* Returns
*/
static inline int cvmx_spi4000_is_present(int interface)
{
return 0 ;
}
/**
* Initialize the SPI4000 for use
*
* @ interface : SPI interface the SPI4000 is connected to
*/
static inline int cvmx_spi4000_initialize(int interface)
{
return 0 ;
}
/**
* Poll all the SPI4000 port and check its speed
*
* @ interface : Interface the SPI4000 is on
* @ port : Port to poll ( 0 - 9 )
* Returns Status of the port . 0 = down . All other values the port is up .
*/
static inline union cvmx_gmxx_rxx_rx_inbnd cvmx_spi4000_check_speed(
int interface,
int port)
{
union cvmx_gmxx_rxx_rx_inbnd r;
r.u64 = 0 ;
return r;
}
/**
* Get current SPI4 initialization callbacks
*
* @ callbacks : Pointer to the callbacks structure . to fill
*
* Returns Pointer to cvmx_spi_callbacks_t structure .
*/
extern void cvmx_spi_get_callbacks(cvmx_spi_callbacks_t *callbacks);
/**
* Set new SPI4 initialization callbacks
*
* @ new_callbacks : Pointer to an updated callbacks structure .
*/
extern void cvmx_spi_set_callbacks(cvmx_spi_callbacks_t *new_callbacks);
/**
* Callback to perform SPI4 reset
*
* @ interface : The identifier of the packet interface to configure and
* use as a SPI interface .
* @ mode : The operating mode for the SPI interface . The interface
* can operate as a full duplex ( both Tx and Rx data paths
* active ) or as a halfplex ( either the Tx data path is
* active or the Rx data path is active , but not both ) .
*
* Returns Zero on success , non - zero error code on failure ( will cause
* SPI initialization to abort )
*/
extern int cvmx_spi_reset_cb(int interface, cvmx_spi_mode_t mode);
/**
* Callback to setup calendar and miscellaneous settings before clock
* detection
*
* @ interface : The identifier of the packet interface to configure and
* use as a SPI interface .
* @ mode : The operating mode for the SPI interface . The interface
* can operate as a full duplex ( both Tx and Rx data paths
* active ) or as a halfplex ( either the Tx data path is
* active or the Rx data path is active , but not both ) .
* @ num_ports : Number of ports to configure on SPI
*
* Returns Zero on success , non - zero error code on failure ( will cause
* SPI initialization to abort )
*/
extern int cvmx_spi_calendar_setup_cb(int interface, cvmx_spi_mode_t mode,
int num_ports);
/**
* Callback to perform clock detection
*
* @ interface : The identifier of the packet interface to configure and
* use as a SPI interface .
* @ mode : The operating mode for the SPI interface . The interface
* can operate as a full duplex ( both Tx and Rx data paths
* active ) or as a halfplex ( either the Tx data path is
* active or the Rx data path is active , but not both ) .
* @ timeout : Timeout to wait for clock synchronization in seconds
*
* Returns Zero on success , non - zero error code on failure ( will cause
* SPI initialization to abort )
*/
extern int cvmx_spi_clock_detect_cb(int interface, cvmx_spi_mode_t mode,
int timeout);
/**
* Callback to perform link training
*
* @ interface : The identifier of the packet interface to configure and
* use as a SPI interface .
* @ mode : The operating mode for the SPI interface . The interface
* can operate as a full duplex ( both Tx and Rx data paths
* active ) or as a halfplex ( either the Tx data path is
* active or the Rx data path is active , but not both ) .
* @ timeout : Timeout to wait for link to be trained ( in seconds )
*
* Returns Zero on success , non - zero error code on failure ( will cause
* SPI initialization to abort )
*/
extern int cvmx_spi_training_cb(int interface, cvmx_spi_mode_t mode,
int timeout);
/**
* Callback to perform calendar data synchronization
*
* @ interface : The identifier of the packet interface to configure and
* use as a SPI interface .
* @ mode : The operating mode for the SPI interface . The interface
* can operate as a full duplex ( both Tx and Rx data paths
* active ) or as a halfplex ( either the Tx data path is
* active or the Rx data path is active , but not both ) .
* @ timeout : Timeout to wait for calendar data in seconds
*
* Returns Zero on success , non - zero error code on failure ( will cause
* SPI initialization to abort )
*/
extern int cvmx_spi_calendar_sync_cb(int interface, cvmx_spi_mode_t mode,
int timeout);
/**
* Callback to handle interface up
*
* @ interface : The identifier of the packet interface to configure and
* use as a SPI interface .
* @ mode : The operating mode for the SPI interface . The interface
* can operate as a full duplex ( both Tx and Rx data paths
* active ) or as a halfplex ( either the Tx data path is
* active or the Rx data path is active , but not both ) .
*
* Returns Zero on success , non - zero error code on failure ( will cause
* SPI initialization to abort )
*/
extern int cvmx_spi_interface_up_cb(int interface, cvmx_spi_mode_t mode);
#endif /* __CVMX_SPI_H__ */
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(vorverarbeitet am 2026-10-02)
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*© Formatika GbR, Deutschland
2026-10-10
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