270 lines
8.9 KiB
C
270 lines
8.9 KiB
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 & 0x2) && (gmxState & 0x1);
|
|
}
|
|
|
|
/**
|
|
* 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__ */
|