dc4ee6ca91
make use of it where possible. This primarily brings in support for newer hardware, and FreeBSD is not yet able to support the abundance of IRQs on new hardware and many features in the Ethernet driver. Because of the changes to IRQs in the Simple Executive, we have to maintain our own list of Octeon IRQs now, which probably can be pared-down and be specific to the CIU interrupt unit soon, and when other interrupt mechanisms are added they can maintain their own definitions. Remove unmasking of interrupts from within the UART device now that the function used is no longer present in the Simple Executive. The unmasking seems to have been gratuitous as this is more properly handled by the buses above the UART device, and seems to work on that basis.
261 lines
8.0 KiB
C
261 lines
8.0 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 ((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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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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