6a42ee320e
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***************
|
|
* 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
|
|
*
|
|
* Functions for SPI initialization, configuration,
|
|
* and monitoring.
|
|
*
|
|
* <hr>$Revision: 70030 $<hr>
|
|
*/
|
|
#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
|
|
#include <asm/octeon/cvmx.h>
|
|
#include <asm/octeon/cvmx-config.h>
|
|
#ifdef CVMX_ENABLE_PKO_FUNCTIONS
|
|
#include <asm/octeon/cvmx-spi.h>
|
|
#include <asm/octeon/cvmx-helper.h>
|
|
#endif
|
|
#include <asm/octeon/cvmx-pko-defs.h>
|
|
#include <asm/octeon/cvmx-pip-defs.h>
|
|
#else
|
|
#if !defined(__FreeBSD__) || !defined(_KERNEL)
|
|
#include "executive-config.h"
|
|
#include "cvmx-config.h"
|
|
#ifdef CVMX_ENABLE_PKO_FUNCTIONS
|
|
|
|
#include "cvmx.h"
|
|
#include "cvmx-spi.h"
|
|
#include "cvmx-sysinfo.h"
|
|
#include "cvmx-helper.h"
|
|
#endif
|
|
#else
|
|
#include "cvmx.h"
|
|
#include "cvmx-spi.h"
|
|
#include "cvmx-sysinfo.h"
|
|
#include "cvmx-helper.h"
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef CVMX_ENABLE_PKO_FUNCTIONS
|
|
|
|
/* CVMX_HELPER_SPI_TIMEOUT is used to determine how long the SPI initialization
|
|
routines wait for SPI training. You can override the value using
|
|
executive-config.h if necessary */
|
|
#ifndef CVMX_HELPER_SPI_TIMEOUT
|
|
#define CVMX_HELPER_SPI_TIMEOUT 10
|
|
#endif
|
|
|
|
int __cvmx_helper_spi_enumerate(int interface)
|
|
{
|
|
#if defined(OCTEON_VENDOR_LANNER)
|
|
if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_CUST_LANNER_MR955)
|
|
{
|
|
cvmx_pko_reg_crc_enable_t enable;
|
|
|
|
enable.u64 = cvmx_read_csr(CVMX_PKO_REG_CRC_ENABLE);
|
|
enable.s.enable &= 0xffff << (16 - (interface*16));
|
|
cvmx_write_csr(CVMX_PKO_REG_CRC_ENABLE, enable.u64);
|
|
|
|
if (interface == 1)
|
|
return 12;
|
|
/* XXX This is not entirely true. */
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#if defined(OCTEON_VENDOR_RADISYS)
|
|
if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_CUST_RADISYS_RSYS4GBE) {
|
|
if (interface == 0)
|
|
return 13;
|
|
if (interface == 1)
|
|
return 8;
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
if ((cvmx_sysinfo_get()->board_type != CVMX_BOARD_TYPE_SIM) &&
|
|
cvmx_spi4000_is_present(interface))
|
|
return 10;
|
|
else
|
|
return 16;
|
|
}
|
|
|
|
/**
|
|
* @INTERNAL
|
|
* Probe a SPI interface and determine the number of ports
|
|
* connected to it. The SPI interface should still be down after
|
|
* this call.
|
|
*
|
|
* @param interface Interface to probe
|
|
*
|
|
* @return Number of ports on the interface. Zero to disable.
|
|
*/
|
|
int __cvmx_helper_spi_probe(int interface)
|
|
{
|
|
int num_ports = __cvmx_helper_spi_enumerate(interface);
|
|
|
|
if (num_ports == 16) {
|
|
cvmx_pko_reg_crc_enable_t enable;
|
|
/*
|
|
* Unlike the SPI4000, most SPI devices don't
|
|
* automatically put on the L2 CRC. For everything
|
|
* except for the SPI4000 have PKO append the L2 CRC
|
|
* to the packet
|
|
*/
|
|
enable.u64 = cvmx_read_csr(CVMX_PKO_REG_CRC_ENABLE);
|
|
enable.s.enable |= 0xffff << (interface*16);
|
|
cvmx_write_csr(CVMX_PKO_REG_CRC_ENABLE, enable.u64);
|
|
}
|
|
__cvmx_helper_setup_gmx(interface, num_ports);
|
|
return num_ports;
|
|
}
|
|
|
|
|
|
/**
|
|
* @INTERNAL
|
|
* Bringup and enable a SPI interface. After this call packet I/O
|
|
* should be fully functional. This is called with IPD enabled but
|
|
* PKO disabled.
|
|
*
|
|
* @param interface Interface to bring up
|
|
*
|
|
* @return Zero on success, negative on failure
|
|
*/
|
|
int __cvmx_helper_spi_enable(int interface)
|
|
{
|
|
/* Normally the ethernet L2 CRC is checked and stripped in the GMX block.
|
|
When you are using SPI, this isn' the case and IPD needs to check
|
|
the L2 CRC */
|
|
int num_ports = cvmx_helper_ports_on_interface(interface);
|
|
int ipd_port;
|
|
for (ipd_port=interface*16; ipd_port<interface*16+num_ports; ipd_port++)
|
|
{
|
|
cvmx_pip_prt_cfgx_t port_config;
|
|
port_config.u64 = cvmx_read_csr(CVMX_PIP_PRT_CFGX(ipd_port));
|
|
port_config.s.crc_en = 1;
|
|
#ifdef OCTEON_VENDOR_RADISYS
|
|
/*
|
|
* Incoming packets on the RSYS4GBE have the FCS stripped.
|
|
*/
|
|
if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_CUST_RADISYS_RSYS4GBE)
|
|
port_config.s.crc_en = 0;
|
|
#endif
|
|
cvmx_write_csr(CVMX_PIP_PRT_CFGX(ipd_port), port_config.u64);
|
|
}
|
|
|
|
if (cvmx_sysinfo_get()->board_type != CVMX_BOARD_TYPE_SIM)
|
|
{
|
|
cvmx_spi_start_interface(interface, CVMX_SPI_MODE_DUPLEX, CVMX_HELPER_SPI_TIMEOUT, num_ports);
|
|
if (cvmx_spi4000_is_present(interface))
|
|
cvmx_spi4000_initialize(interface);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* @INTERNAL
|
|
* Return the link state of an IPD/PKO port as returned by
|
|
* auto negotiation. The result of this function may not match
|
|
* Octeon's link config if auto negotiation has changed since
|
|
* the last call to cvmx_helper_link_set().
|
|
*
|
|
* @param ipd_port IPD/PKO port to query
|
|
*
|
|
* @return Link state
|
|
*/
|
|
cvmx_helper_link_info_t __cvmx_helper_spi_link_get(int ipd_port)
|
|
{
|
|
cvmx_helper_link_info_t result;
|
|
int interface = cvmx_helper_get_interface_num(ipd_port);
|
|
int index = cvmx_helper_get_interface_index_num(ipd_port);
|
|
result.u64 = 0;
|
|
|
|
if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_SIM)
|
|
{
|
|
/* The simulator gives you a simulated full duplex link */
|
|
result.s.link_up = 1;
|
|
result.s.full_duplex = 1;
|
|
result.s.speed = 10000;
|
|
}
|
|
else if (cvmx_spi4000_is_present(interface))
|
|
{
|
|
cvmx_gmxx_rxx_rx_inbnd_t inband = cvmx_spi4000_check_speed(interface, index);
|
|
result.s.link_up = inband.s.status;
|
|
result.s.full_duplex = inband.s.duplex;
|
|
switch (inband.s.speed)
|
|
{
|
|
case 0: /* 10 Mbps */
|
|
result.s.speed = 10;
|
|
break;
|
|
case 1: /* 100 Mbps */
|
|
result.s.speed = 100;
|
|
break;
|
|
case 2: /* 1 Gbps */
|
|
result.s.speed = 1000;
|
|
break;
|
|
case 3: /* Illegal */
|
|
result.s.speed = 0;
|
|
result.s.link_up = 0;
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* For generic SPI we can't determine the link, just return some
|
|
sane results */
|
|
result.s.link_up = 1;
|
|
result.s.full_duplex = 1;
|
|
result.s.speed = 10000;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
/**
|
|
* @INTERNAL
|
|
* Configure an IPD/PKO port for the specified link state. This
|
|
* function does not influence auto negotiation at the PHY level.
|
|
* The passed link state must always match the link state returned
|
|
* by cvmx_helper_link_get(). It is normally best to use
|
|
* cvmx_helper_link_autoconf() instead.
|
|
*
|
|
* @param ipd_port IPD/PKO port to configure
|
|
* @param link_info The new link state
|
|
*
|
|
* @return Zero on success, negative on failure
|
|
*/
|
|
int __cvmx_helper_spi_link_set(int ipd_port, cvmx_helper_link_info_t link_info)
|
|
{
|
|
/* Nothing to do. If we have a SPI4000 then the setup was already performed
|
|
by cvmx_spi4000_check_speed(). If not then there isn't any link
|
|
info */
|
|
return 0;
|
|
}
|
|
|
|
#endif /* CVMX_ENABLE_PKO_FUNCTIONS */
|
|
|