283 lines
8.1 KiB
C
283 lines
8.1 KiB
C
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/***********************license start***************
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* Copyright (c) 2003-2010 Cavium Inc. (support@cavium.com). All rights
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* reserved.
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*
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* * Neither the name of Cavium Inc. nor the names of
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* its contributors may be used to endorse or promote products
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* derived from this software without specific prior written
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* permission.
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* This Software, including technical data, may be subject to U.S. export control
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* laws, including the U.S. Export Administration Act and its associated
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* regulations, and may be subject to export or import regulations in other
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* countries.
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* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
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* AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS OR
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* WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO
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* THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR
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* DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM
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* SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE,
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* MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF
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* VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR
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* CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT OF USE OR
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* PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
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***********************license end**************************************/
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/**
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* @file
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*
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* Helper Functions for the Configuration Framework
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*
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* OCTEON_CN68XX introduces a flexible hw interface configuration
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* scheme. To cope with this change and the requirements of
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* configurability for other system resources, e.g., IPD/PIP pknd and
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* PKO ports and queues, a configuration framework for the SDK is
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* designed. It has two goals: first to recognize and establish the
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* default configuration and, second, to allow the user to define key
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* parameters in a high-level language.
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*
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* The helper functions query the QLM setup to help achieving the
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* first goal.
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*
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* The second goal is accomplished by generating
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* cvmx_helper_cfg_init() from a high-level lanaguage.
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*
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* <hr>$Revision: 0 $<hr>
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*/
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#ifndef __CVMX_HELPER_CFG_H__
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#define __CVMX_HELPER_CFG_H__
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#define CVMX_HELPER_CFG_MAX_IFACE 9
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#define CVMX_HELPER_CFG_MAX_PKO_PORT 128
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#define CVMX_HELPER_CFG_MAX_PIP_BPID 64
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#define CVMX_HELPER_CFG_MAX_PIP_PKND 64
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#define CVMX_HELPER_CFG_MAX_PKO_QUEUES 256
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#define CVMX_HELPER_CFG_MAX_PORT_PER_IFACE 256
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#define CVMX_HELPER_CFG_INVALID_VALUE -1 /* The default return
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* value upon failure
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define cvmx_helper_cfg_assert(cond) \
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do { \
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if (!(cond)) \
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{ \
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cvmx_dprintf("cvmx_helper_cfg_assert (%s) at %s:%d\n", \
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#cond, __FILE__, __LINE__); \
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} \
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} while (0)
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/*
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* Config Options
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*
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* These options have to be set via cvmx_helper_cfg_opt_set() before calling the
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* routines that set up the hw. These routines process the options and set them
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* correctly to take effect at runtime.
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*/
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enum cvmx_helper_cfg_option {
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CVMX_HELPER_CFG_OPT_USE_DWB, /*
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* Global option to control if
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* the SDK configures units (DMA,
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* SSO, and PKO) to send don't
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* write back (DWB) requests for
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* freed buffers. Set to 1/0 to
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* enable/disable DWB.
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*
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* For programs that fit inside
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* L2, sending DWB just causes
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* more L2 operations without
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* benefit.
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*/
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CVMX_HELPER_CFG_OPT_MAX
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};
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typedef enum cvmx_helper_cfg_option cvmx_helper_cfg_option_t;
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/*
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* @INTERNAL
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* Return configured pknd for the port
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*
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* @param interface the interface number
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* @param index the port's index number
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* @return the pknd
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*/
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extern int __cvmx_helper_cfg_pknd(int interface, int index);
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/*
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* @INTERNAL
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* Return the configured bpid for the port
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*
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* @param interface the interface number
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* @param index the port's index number
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* @return the bpid
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*/
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extern int __cvmx_helper_cfg_bpid(int interface, int index);
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/*
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* @INTERNAL
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* Return the configured pko_port base for the port
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*
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* @param interface the interface number
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* @param index the port's index number
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* @return the pko_port base
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*/
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extern int __cvmx_helper_cfg_pko_port_base(int interface, int index);
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/*
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* @INTERNAL
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* Return the configured number of pko_ports for the port
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*
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* @param interface the interface number
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* @param index the port's index number
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* @return the number of pko_ports
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*/
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extern int __cvmx_helper_cfg_pko_port_num(int interface, int index);
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/*
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* @INTERNAL
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* Return the configured pko_queue base for the pko_port
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*
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* @param pko_port
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* @return the pko_queue base
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*/
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extern int __cvmx_helper_cfg_pko_queue_base(int pko_port);
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/*
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* @INTERNAL
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* Return the configured number of pko_queues for the pko_port
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*
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* @param pko_port
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* @return the number of pko_queues
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*/
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extern int __cvmx_helper_cfg_pko_queue_num(int pko_port);
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/*
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* @INTERNAL
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* Return the interface the pko_port is configured for
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*
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* @param pko_port
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* @return the interface for the pko_port
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*/
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extern int __cvmx_helper_cfg_pko_port_interface(int pko_port);
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/*
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* @INTERNAL
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* Return the index of the port the pko_port is configured for
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*
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* @param pko_port
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* @return the index of the port
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*/
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extern int __cvmx_helper_cfg_pko_port_index(int pko_port);
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/*
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* @INTERNAL
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* Return the pko_eid of the pko_port
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*
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* @param pko_port
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* @return the pko_eid
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*/
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extern int __cvmx_helper_cfg_pko_port_eid(int pko_port);
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/*
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* @INTERNAL
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* Return the max# of pko queues allocated.
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*
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* @return the max# of pko queues
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*
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* Note: there might be holes in the queue space depending on user
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* configuration. The function returns the highest queue's index in
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* use.
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*/
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extern int __cvmx_helper_cfg_pko_max_queue(void);
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/*
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* @INTERNAL
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* Return the max# of PKO DMA engines allocated.
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*
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* @return the max# of DMA engines
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*
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* NOTE: the DMA engines are allocated contiguously and starting from
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* 0.
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*/
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extern int __cvmx_helper_cfg_pko_max_engine(void);
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/*
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* Get the value set for the config option ``opt''.
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*
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* @param opt is the config option.
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* @return the value set for the option
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*/
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extern uint64_t cvmx_helper_cfg_opt_get(cvmx_helper_cfg_option_t opt);
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/*
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* Set the value for a config option.
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*
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* @param opt is the config option.
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* @param val is the value to set for the opt.
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* @return 0 for success and -1 on error
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*
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* Note an option here is a config-time parameter and this means that
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* it has to be set before calling the corresponding setup functions
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* that actually sets the option in hw.
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*/
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extern int cvmx_helper_cfg_opt_set(cvmx_helper_cfg_option_t opt, uint64_t val);
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/*
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* Retrieve the pko_port base given ipd_port.
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*
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* @param ipd_port is the IPD eport
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* @return the corresponding PKO port base for the physical port
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* represented by the IPD eport or CVMX_HELPER_CFG_INVALID_VALUE.
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*/
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extern int cvmx_helper_cfg_ipd2pko_port_base(int ipd_port);
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/*
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* Retrieve the number of pko_ports given ipd_port.
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*
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* @param ipd_port is the IPD eport
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* @return the corresponding number of PKO ports for the physical port
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* represented by IPD eport or CVMX_HELPER_CFG_INVALID_VALUE.
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*/
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extern int cvmx_helper_cfg_ipd2pko_port_num(int ipd_port);
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/*
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* @INTERNAL
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* The init function
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*
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* @param none
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* @return 0 for success.
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*
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* Note: this function is meant to be called to set the ``configured
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* parameters,'' e.g., pknd, bpid, etc. and therefore should be before
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* any of the corresponding cvmx_helper_cfg_xxxx() functions are
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* called.
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*/
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extern int __cvmx_helper_cfg_init(void);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __CVMX_HELPER_CFG_H__ */
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