1 /***********************license start*************** 2 * Author: Cavium Networks 3 * 4 * Contact: support@caviumnetworks.com 5 * This file is part of the OCTEON SDK 6 * 7 * Copyright (c) 2003-2008 Cavium Networks 8 * 9 * This file is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License, Version 2, as 11 * published by the Free Software Foundation. 12 * 13 * This file is distributed in the hope that it will be useful, but 14 * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty 15 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or 16 * NONINFRINGEMENT. See the GNU General Public License for more 17 * details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this file; if not, write to the Free Software 21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 22 * or visit http://www.gnu.org/licenses/. 23 * 24 * This file may also be available under a different license from Cavium. 25 * Contact Cavium Networks for more information 26 ***********************license end**************************************/ 27 28 /* 29 * 30 * Helper functions for common, but complicated tasks. 31 * 32 */ 33 34 #ifndef __CVMX_HELPER_H__ 35 #define __CVMX_HELPER_H__ 36 37 #include <asm/octeon/cvmx-config.h> 38 #include <asm/octeon/cvmx-fpa.h> 39 #include <asm/octeon/cvmx-wqe.h> 40 41 typedef enum { 42 CVMX_HELPER_INTERFACE_MODE_DISABLED, 43 CVMX_HELPER_INTERFACE_MODE_RGMII, 44 CVMX_HELPER_INTERFACE_MODE_GMII, 45 CVMX_HELPER_INTERFACE_MODE_SPI, 46 CVMX_HELPER_INTERFACE_MODE_PCIE, 47 CVMX_HELPER_INTERFACE_MODE_XAUI, 48 CVMX_HELPER_INTERFACE_MODE_SGMII, 49 CVMX_HELPER_INTERFACE_MODE_PICMG, 50 CVMX_HELPER_INTERFACE_MODE_NPI, 51 CVMX_HELPER_INTERFACE_MODE_LOOP, 52 } cvmx_helper_interface_mode_t; 53 54 union cvmx_helper_link_info { 55 uint64_t u64; 56 struct { 57 uint64_t reserved_20_63:44; 58 uint64_t link_up:1; /**< Is the physical link up? */ 59 uint64_t full_duplex:1; /**< 1 if the link is full duplex */ 60 uint64_t speed:18; /**< Speed of the link in Mbps */ 61 } s; 62 }; 63 64 #include <asm/octeon/cvmx-helper-errata.h> 65 #include <asm/octeon/cvmx-helper-loop.h> 66 #include <asm/octeon/cvmx-helper-npi.h> 67 #include <asm/octeon/cvmx-helper-rgmii.h> 68 #include <asm/octeon/cvmx-helper-sgmii.h> 69 #include <asm/octeon/cvmx-helper-spi.h> 70 #include <asm/octeon/cvmx-helper-util.h> 71 #include <asm/octeon/cvmx-helper-xaui.h> 72 73 /** 74 * This function enables the IPD and also enables the packet interfaces. 75 * The packet interfaces (RGMII and SPI) must be enabled after the 76 * IPD. This should be called by the user program after any additional 77 * IPD configuration changes are made if CVMX_HELPER_ENABLE_IPD 78 * is not set in the executive-config.h file. 79 * 80 * Returns 0 on success 81 * -1 on failure 82 */ 83 extern int cvmx_helper_ipd_and_packet_input_enable(void); 84 85 /** 86 * Initialize the PIP, IPD, and PKO hardware to support 87 * simple priority based queues for the ethernet ports. Each 88 * port is configured with a number of priority queues based 89 * on CVMX_PKO_QUEUES_PER_PORT_* where each queue is lower 90 * priority than the previous. 91 * 92 * Returns Zero on success, non-zero on failure 93 */ 94 extern int cvmx_helper_initialize_packet_io_global(void); 95 96 /** 97 * Does core local initialization for packet io 98 * 99 * Returns Zero on success, non-zero on failure 100 */ 101 extern int cvmx_helper_initialize_packet_io_local(void); 102 103 /** 104 * Returns the number of ports on the given interface. 105 * The interface must be initialized before the port count 106 * can be returned. 107 * 108 * @interface: Which interface to return port count for. 109 * 110 * Returns Port count for interface 111 * -1 for uninitialized interface 112 */ 113 extern int cvmx_helper_ports_on_interface(int interface); 114 115 /** 116 * Return the number of interfaces the chip has. Each interface 117 * may have multiple ports. Most chips support two interfaces, 118 * but the CNX0XX and CNX1XX are exceptions. These only support 119 * one interface. 120 * 121 * Returns Number of interfaces on chip 122 */ 123 extern int cvmx_helper_get_number_of_interfaces(void); 124 125 /** 126 * Get the operating mode of an interface. Depending on the Octeon 127 * chip and configuration, this function returns an enumeration 128 * of the type of packet I/O supported by an interface. 129 * 130 * @interface: Interface to probe 131 * 132 * Returns Mode of the interface. Unknown or unsupported interfaces return 133 * DISABLED. 134 */ 135 extern cvmx_helper_interface_mode_t cvmx_helper_interface_get_mode(int 136 interface); 137 138 /** 139 * Return the link state of an IPD/PKO port as returned by 140 * auto negotiation. The result of this function may not match 141 * Octeon's link config if auto negotiation has changed since 142 * the last call to cvmx_helper_link_set(). 143 * 144 * @ipd_port: IPD/PKO port to query 145 * 146 * Returns Link state 147 */ 148 extern union cvmx_helper_link_info cvmx_helper_link_get(int ipd_port); 149 150 /** 151 * Configure an IPD/PKO port for the specified link state. This 152 * function does not influence auto negotiation at the PHY level. 153 * The passed link state must always match the link state returned 154 * by cvmx_helper_link_get(). 155 * 156 * @ipd_port: IPD/PKO port to configure 157 * @link_info: The new link state 158 * 159 * Returns Zero on success, negative on failure 160 */ 161 extern int cvmx_helper_link_set(int ipd_port, 162 union cvmx_helper_link_info link_info); 163 164 /** 165 * This function probes an interface to determine the actual 166 * number of hardware ports connected to it. It doesn't setup the 167 * ports or enable them. The main goal here is to set the global 168 * interface_port_count[interface] correctly. Hardware setup of the 169 * ports will be performed later. 170 * 171 * @interface: Interface to probe 172 * 173 * Returns Zero on success, negative on failure 174 */ 175 extern int cvmx_helper_interface_probe(int interface); 176 extern int cvmx_helper_interface_enumerate(int interface); 177 178 #endif /* __CVMX_HELPER_H__ */ 179