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Diffstat (limited to 'cvmx-spi.h')
| -rw-r--r-- | cvmx-spi.h | 265 |
1 files changed, 265 insertions, 0 deletions
diff --git a/cvmx-spi.h b/cvmx-spi.h new file mode 100644 index 000000000000..0da6becc1c76 --- /dev/null +++ b/cvmx-spi.h @@ -0,0 +1,265 @@ +/***********************license start*************** + * Copyright (c) 2003-2008 Cavium Networks (support@cavium.com). All rights + * reserved. + * + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * * 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. + * + * * Neither the name of Cavium Networks nor the names of + * its contributors may be used to endorse or promote products + * derived from this software without specific prior written + * permission. + * + * TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS" + * AND WITH ALL FAULTS AND CAVIUM NETWORKS MAKES NO PROMISES, REPRESENTATIONS + * OR WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH + * RESPECT TO THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY + * REPRESENTATION OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT + * DEFECTS, AND CAVIUM SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES + * OF TITLE, MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR + * PURPOSE, LACK OF VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET + * POSSESSION OR CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT + * OF USE OR PERFORMANCE OF THE SOFTWARE LIES WITH YOU. + * + * + * For any questions regarding licensing please contact marketing@caviumnetworks.com + * + ***********************license end**************************************/ + + + + + + +/** + * @file + * + * This file contains defines for the SPI interface + + * <hr>$Revision: 41586 $<hr> + * + * + */ +#ifndef __CVMX_SPI_H__ +#define __CVMX_SPI_H__ + +#ifdef __cplusplus +extern "C" { +#endif + +/* 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 + * + * @param interface Interface to check + * @return 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. + * + * @param interface The identifier of the packet interface to configure and + * use as a SPI interface. + * @param 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). + * @param timeout Timeout to wait for clock synchronization in seconds + * @param num_ports Number of SPI ports to configure + * + * @return 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. + * + * @param interface The identifier of the packet interface to configure and + * use as a SPI interface. + * @param 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). + * @param timeout Timeout to wait for clock synchronization in seconds + * @return 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 + * + * @param interface SPI interface the SPI4000 is connected to + * + * @return + */ +extern int cvmx_spi4000_is_present(int interface); + +/** + * Initialize the SPI4000 for use + * + * @param interface SPI interface the SPI4000 is connected to + */ +extern int cvmx_spi4000_initialize(int interface); + +/** + * Poll all the SPI4000 port and check its speed + * + * @param interface Interface the SPI4000 is on + * @param port Port to poll (0-9) + * @return Status of the port. 0=down. All other values the port is up. + */ +extern cvmx_gmxx_rxx_rx_inbnd_t cvmx_spi4000_check_speed(int interface, int port); + +/** + * Get current SPI4 initialization callbacks + * + * @param callbacks Pointer to the callbacks structure.to fill + * + * @return Pointer to cvmx_spi_callbacks_t structure. + */ +extern void cvmx_spi_get_callbacks(cvmx_spi_callbacks_t * callbacks); + +/** + * Set new SPI4 initialization callbacks + * + * @param 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 + * + * @param interface The identifier of the packet interface to configure and + * use as a SPI interface. + * @param 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). + * @return 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 + * + * @param interface The identifier of the packet interface to configure and + * use as a SPI interface. + * @param 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). + * @param num_ports Number of ports to configure on SPI + * + * @return 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 + * + * @param interface The identifier of the packet interface to configure and + * use as a SPI interface. + * @param 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). + * @param timeout Timeout to wait for clock synchronization in seconds + * @return 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 + * + * @param interface The identifier of the packet interface to configure and + * use as a SPI interface. + * @param 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). + * @param timeout Timeout to wait for link to be trained (in seconds) + * @return 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 + * + * @param interface The identifier of the packet interface to configure and + * use as a SPI interface. + * @param 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). + * @param timeout Timeout to wait for calendar data in seconds + * @return 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 + * + * @param interface The identifier of the packet interface to configure and + * use as a SPI interface. + * @param 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). + * @return 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); + +#ifdef __cplusplus +} +#endif + +#endif /* __CVMX_SPI_H__ */ |