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/***********************license start***************
* Copyright (c) 2003-2010 Cavium Inc. (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 Inc. nor the names of
* its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
* This Software, including technical data, may be subject to U.S. export control
* laws, including the U.S. Export Administration Act and its associated
* regulations, and may be subject to export or import regulations in other
* countries.
* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
* AND WITH ALL FAULTS AND CAVIUM INC. 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.
***********************license end**************************************/
/**
* @file
*
* Helper Functions for the Configuration Framework
*
* OCTEON_CN68XX introduces a flexible hw interface configuration
* scheme. To cope with this change and the requirements of
* configurability for other system resources, e.g., IPD/PIP pknd and
* PKO ports and queues, a configuration framework for the SDK is
* designed. It has two goals: first to recognize and establish the
* default configuration and, second, to allow the user to define key
* parameters in a high-level language.
*
* The helper functions query the QLM setup to help achieving the
* first goal.
*
* The second goal is accomplished by generating
* cvmx_helper_cfg_init() from a high-level lanaguage.
*
* <hr>$Revision: 0 $<hr>
*/
#ifndef __CVMX_HELPER_CFG_H__
#define __CVMX_HELPER_CFG_H__
#define CVMX_HELPER_CFG_MAX_IFACE 9
#define CVMX_HELPER_CFG_MAX_PKO_PORT 128
#define CVMX_HELPER_CFG_MAX_PIP_BPID 64
#define CVMX_HELPER_CFG_MAX_PIP_PKND 64
#define CVMX_HELPER_CFG_MAX_PKO_QUEUES 256
#define CVMX_HELPER_CFG_MAX_PORT_PER_IFACE 256
#define CVMX_HELPER_CFG_INVALID_VALUE -1 /* The default return
* value upon failure
*/
#ifdef __cplusplus
extern "C" {
#endif
#define cvmx_helper_cfg_assert(cond) \
do { \
if (!(cond)) \
{ \
cvmx_dprintf("cvmx_helper_cfg_assert (%s) at %s:%d\n", \
#cond, __FILE__, __LINE__); \
} \
} while (0)
/*
* Config Options
*
* These options have to be set via cvmx_helper_cfg_opt_set() before calling the
* routines that set up the hw. These routines process the options and set them
* correctly to take effect at runtime.
*/
enum cvmx_helper_cfg_option {
CVMX_HELPER_CFG_OPT_USE_DWB, /*
* Global option to control if
* the SDK configures units (DMA,
* SSO, and PKO) to send don't
* write back (DWB) requests for
* freed buffers. Set to 1/0 to
* enable/disable DWB.
*
* For programs that fit inside
* L2, sending DWB just causes
* more L2 operations without
* benefit.
*/
CVMX_HELPER_CFG_OPT_MAX
};
typedef enum cvmx_helper_cfg_option cvmx_helper_cfg_option_t;
/*
* @INTERNAL
* Return configured pknd for the port
*
* @param interface the interface number
* @param index the port's index number
* @return the pknd
*/
extern int __cvmx_helper_cfg_pknd(int interface, int index);
/*
* @INTERNAL
* Return the configured bpid for the port
*
* @param interface the interface number
* @param index the port's index number
* @return the bpid
*/
extern int __cvmx_helper_cfg_bpid(int interface, int index);
/*
* @INTERNAL
* Return the configured pko_port base for the port
*
* @param interface the interface number
* @param index the port's index number
* @return the pko_port base
*/
extern int __cvmx_helper_cfg_pko_port_base(int interface, int index);
/*
* @INTERNAL
* Return the configured number of pko_ports for the port
*
* @param interface the interface number
* @param index the port's index number
* @return the number of pko_ports
*/
extern int __cvmx_helper_cfg_pko_port_num(int interface, int index);
/*
* @INTERNAL
* Return the configured pko_queue base for the pko_port
*
* @param pko_port
* @return the pko_queue base
*/
extern int __cvmx_helper_cfg_pko_queue_base(int pko_port);
/*
* @INTERNAL
* Return the configured number of pko_queues for the pko_port
*
* @param pko_port
* @return the number of pko_queues
*/
extern int __cvmx_helper_cfg_pko_queue_num(int pko_port);
/*
* @INTERNAL
* Return the interface the pko_port is configured for
*
* @param pko_port
* @return the interface for the pko_port
*/
extern int __cvmx_helper_cfg_pko_port_interface(int pko_port);
/*
* @INTERNAL
* Return the index of the port the pko_port is configured for
*
* @param pko_port
* @return the index of the port
*/
extern int __cvmx_helper_cfg_pko_port_index(int pko_port);
/*
* @INTERNAL
* Return the pko_eid of the pko_port
*
* @param pko_port
* @return the pko_eid
*/
extern int __cvmx_helper_cfg_pko_port_eid(int pko_port);
/*
* @INTERNAL
* Return the max# of pko queues allocated.
*
* @return the max# of pko queues
*
* Note: there might be holes in the queue space depending on user
* configuration. The function returns the highest queue's index in
* use.
*/
extern int __cvmx_helper_cfg_pko_max_queue(void);
/*
* @INTERNAL
* Return the max# of PKO DMA engines allocated.
*
* @return the max# of DMA engines
*
* NOTE: the DMA engines are allocated contiguously and starting from
* 0.
*/
extern int __cvmx_helper_cfg_pko_max_engine(void);
/*
* Get the value set for the config option ``opt''.
*
* @param opt is the config option.
* @return the value set for the option
*/
extern uint64_t cvmx_helper_cfg_opt_get(cvmx_helper_cfg_option_t opt);
/*
* Set the value for a config option.
*
* @param opt is the config option.
* @param val is the value to set for the opt.
* @return 0 for success and -1 on error
*
* Note an option here is a config-time parameter and this means that
* it has to be set before calling the corresponding setup functions
* that actually sets the option in hw.
*/
extern int cvmx_helper_cfg_opt_set(cvmx_helper_cfg_option_t opt, uint64_t val);
/*
* Retrieve the pko_port base given ipd_port.
*
* @param ipd_port is the IPD eport
* @return the corresponding PKO port base for the physical port
* represented by the IPD eport or CVMX_HELPER_CFG_INVALID_VALUE.
*/
extern int cvmx_helper_cfg_ipd2pko_port_base(int ipd_port);
/*
* Retrieve the number of pko_ports given ipd_port.
*
* @param ipd_port is the IPD eport
* @return the corresponding number of PKO ports for the physical port
* represented by IPD eport or CVMX_HELPER_CFG_INVALID_VALUE.
*/
extern int cvmx_helper_cfg_ipd2pko_port_num(int ipd_port);
/*
* @INTERNAL
* The init function
*
* @param none
* @return 0 for success.
*
* Note: this function is meant to be called to set the ``configured
* parameters,'' e.g., pknd, bpid, etc. and therefore should be before
* any of the corresponding cvmx_helper_cfg_xxxx() functions are
* called.
*/
extern int __cvmx_helper_cfg_init(void);
#ifdef __cplusplus
}
#endif
#endif /* __CVMX_HELPER_CFG_H__ */
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