b3a6fcb3b7
consistency reasons, and to ensure that CRC addition is disabled on output. With this, transmit seems to be working properly on the ATCA-7220.
278 lines
8.4 KiB
C
278 lines
8.4 KiB
C
/***********************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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* Functions for SPI initialization, configuration,
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* and monitoring.
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*
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* <hr>$Revision: 70030 $<hr>
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*/
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#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
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#include <asm/octeon/cvmx.h>
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#include <asm/octeon/cvmx-config.h>
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#ifdef CVMX_ENABLE_PKO_FUNCTIONS
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#include <asm/octeon/cvmx-spi.h>
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#include <asm/octeon/cvmx-helper.h>
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#endif
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#include <asm/octeon/cvmx-pko-defs.h>
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#include <asm/octeon/cvmx-pip-defs.h>
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#else
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#if !defined(__FreeBSD__) || !defined(_KERNEL)
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#include "executive-config.h"
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#include "cvmx-config.h"
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#ifdef CVMX_ENABLE_PKO_FUNCTIONS
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#include "cvmx.h"
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#include "cvmx-spi.h"
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#include "cvmx-sysinfo.h"
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#include "cvmx-helper.h"
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#endif
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#else
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#include "cvmx.h"
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#include "cvmx-spi.h"
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#include "cvmx-sysinfo.h"
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#include "cvmx-helper.h"
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#endif
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#endif
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#ifdef CVMX_ENABLE_PKO_FUNCTIONS
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/* CVMX_HELPER_SPI_TIMEOUT is used to determine how long the SPI initialization
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routines wait for SPI training. You can override the value using
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executive-config.h if necessary */
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#ifndef CVMX_HELPER_SPI_TIMEOUT
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#define CVMX_HELPER_SPI_TIMEOUT 10
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#endif
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int __cvmx_helper_spi_enumerate(int interface)
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{
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#if defined(OCTEON_VENDOR_LANNER)
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if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_CUST_LANNER_MR955)
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{
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cvmx_pko_reg_crc_enable_t enable;
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enable.u64 = cvmx_read_csr(CVMX_PKO_REG_CRC_ENABLE);
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enable.s.enable &= 0xffff << (16 - (interface*16));
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cvmx_write_csr(CVMX_PKO_REG_CRC_ENABLE, enable.u64);
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if (interface == 1)
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return 12;
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/* XXX This is not entirely true. */
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return 0;
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}
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#endif
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#if defined(OCTEON_VENDOR_RADISYS)
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if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_CUST_RADISYS_RSYS4GBE) {
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if (interface == 0)
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return 13;
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if (interface == 1)
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return 8;
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return 0;
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}
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#endif
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if ((cvmx_sysinfo_get()->board_type != CVMX_BOARD_TYPE_SIM) &&
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cvmx_spi4000_is_present(interface))
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return 10;
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else
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return 16;
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}
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/**
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* @INTERNAL
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* Probe a SPI interface and determine the number of ports
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* connected to it. The SPI interface should still be down after
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* this call.
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*
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* @param interface Interface to probe
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*
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* @return Number of ports on the interface. Zero to disable.
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*/
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int __cvmx_helper_spi_probe(int interface)
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{
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int num_ports = __cvmx_helper_spi_enumerate(interface);
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if (num_ports == 16) {
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cvmx_pko_reg_crc_enable_t enable;
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/*
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* Unlike the SPI4000, most SPI devices don't
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* automatically put on the L2 CRC. For everything
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* except for the SPI4000 have PKO append the L2 CRC
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* to the packet
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*/
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enable.u64 = cvmx_read_csr(CVMX_PKO_REG_CRC_ENABLE);
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enable.s.enable |= 0xffff << (interface*16);
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cvmx_write_csr(CVMX_PKO_REG_CRC_ENABLE, enable.u64);
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}
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__cvmx_helper_setup_gmx(interface, num_ports);
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return num_ports;
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}
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/**
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* @INTERNAL
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* Bringup and enable a SPI interface. After this call packet I/O
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* should be fully functional. This is called with IPD enabled but
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* PKO disabled.
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*
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* @param interface Interface to bring up
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*
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* @return Zero on success, negative on failure
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*/
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int __cvmx_helper_spi_enable(int interface)
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{
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/* Normally the ethernet L2 CRC is checked and stripped in the GMX block.
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When you are using SPI, this isn' the case and IPD needs to check
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the L2 CRC */
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int num_ports = cvmx_helper_ports_on_interface(interface);
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int ipd_port;
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for (ipd_port=interface*16; ipd_port<interface*16+num_ports; ipd_port++)
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{
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cvmx_pip_prt_cfgx_t port_config;
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port_config.u64 = cvmx_read_csr(CVMX_PIP_PRT_CFGX(ipd_port));
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port_config.s.crc_en = 1;
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#ifdef OCTEON_VENDOR_RADISYS
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/*
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* Incoming packets on the RSYS4GBE have the FCS stripped.
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*/
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if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_CUST_RADISYS_RSYS4GBE)
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port_config.s.crc_en = 0;
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#endif
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cvmx_write_csr(CVMX_PIP_PRT_CFGX(ipd_port), port_config.u64);
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}
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if (cvmx_sysinfo_get()->board_type != CVMX_BOARD_TYPE_SIM)
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{
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cvmx_spi_start_interface(interface, CVMX_SPI_MODE_DUPLEX, CVMX_HELPER_SPI_TIMEOUT, num_ports);
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if (cvmx_spi4000_is_present(interface))
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cvmx_spi4000_initialize(interface);
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}
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return 0;
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}
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/**
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* @INTERNAL
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* Return the link state of an IPD/PKO port as returned by
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* auto negotiation. The result of this function may not match
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* Octeon's link config if auto negotiation has changed since
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* the last call to cvmx_helper_link_set().
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*
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* @param ipd_port IPD/PKO port to query
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*
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* @return Link state
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*/
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cvmx_helper_link_info_t __cvmx_helper_spi_link_get(int ipd_port)
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{
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cvmx_helper_link_info_t result;
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int interface = cvmx_helper_get_interface_num(ipd_port);
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int index = cvmx_helper_get_interface_index_num(ipd_port);
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result.u64 = 0;
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if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_SIM)
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{
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/* The simulator gives you a simulated full duplex link */
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result.s.link_up = 1;
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result.s.full_duplex = 1;
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result.s.speed = 10000;
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}
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else if (cvmx_spi4000_is_present(interface))
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{
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cvmx_gmxx_rxx_rx_inbnd_t inband = cvmx_spi4000_check_speed(interface, index);
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result.s.link_up = inband.s.status;
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result.s.full_duplex = inband.s.duplex;
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switch (inband.s.speed)
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{
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case 0: /* 10 Mbps */
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result.s.speed = 10;
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break;
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case 1: /* 100 Mbps */
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result.s.speed = 100;
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break;
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case 2: /* 1 Gbps */
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result.s.speed = 1000;
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break;
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case 3: /* Illegal */
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result.s.speed = 0;
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result.s.link_up = 0;
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break;
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}
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}
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else
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{
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/* For generic SPI we can't determine the link, just return some
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sane results */
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result.s.link_up = 1;
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result.s.full_duplex = 1;
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result.s.speed = 10000;
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}
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return result;
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}
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/**
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* @INTERNAL
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* Configure an IPD/PKO port for the specified link state. This
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* function does not influence auto negotiation at the PHY level.
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* The passed link state must always match the link state returned
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* by cvmx_helper_link_get(). It is normally best to use
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* cvmx_helper_link_autoconf() instead.
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*
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* @param ipd_port IPD/PKO port to configure
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* @param link_info The new link state
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*
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* @return Zero on success, negative on failure
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*/
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int __cvmx_helper_spi_link_set(int ipd_port, cvmx_helper_link_info_t link_info)
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{
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/* Nothing to do. If we have a SPI4000 then the setup was already performed
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by cvmx_spi4000_check_speed(). If not then there isn't any link
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info */
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return 0;
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}
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#endif /* CVMX_ENABLE_PKO_FUNCTIONS */
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