arch/mips/include/asm/octeon/cvmx-helper.h

   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 typedef union {
  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 } cvmx_helper_link_info_t;
  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  * cvmx_override_pko_queue_priority(int ipd_port, uint64_t
  75  * priorities[16]) is a function pointer. It is meant to allow
  76  * customization of the PKO queue priorities based on the port
  77  * number. Users should set this pointer to a function before
  78  * calling any cvmx-helper operations.
  79  */
  80 extern void (*cvmx_override_pko_queue_priority) (int pko_port,
  81                                                  uint64_t priorities[16]);
  82
  83 /**
  84  * cvmx_override_ipd_port_setup(int ipd_port) is a function
  85  * pointer. It is meant to allow customization of the IPD port
  86  * setup before packet input/output comes online. It is called
  87  * after cvmx-helper does the default IPD configuration, but
  88  * before IPD is enabled. Users should set this pointer to a
  89  * function before calling any cvmx-helper operations.
  90  */
  91 extern void (*cvmx_override_ipd_port_setup) (int ipd_port);
  92
  93 /**
  94  * This function enables the IPD and also enables the packet interfaces.
  95  * The packet interfaces (RGMII and SPI) must be enabled after the
  96  * IPD.  This should be called by the user program after any additional
  97  * IPD configuration changes are made if CVMX_HELPER_ENABLE_IPD
  98  * is not set in the executive-config.h file.
  99  *
 100  * Returns 0 on success
 101  *         -1 on failure
 102  */
 103 extern int cvmx_helper_ipd_and_packet_input_enable(void);
 104
 105 /**
 106  * Initialize the PIP, IPD, and PKO hardware to support
 107  * simple priority based queues for the ethernet ports. Each
 108  * port is configured with a number of priority queues based
 109  * on CVMX_PKO_QUEUES_PER_PORT_* where each queue is lower
 110  * priority than the previous.
 111  *
 112  * Returns Zero on success, non-zero on failure
 113  */
 114 extern int cvmx_helper_initialize_packet_io_global(void);
 115
 116 /**
 117  * Does core local initialization for packet io
 118  *
 119  * Returns Zero on success, non-zero on failure
 120  */
 121 extern int cvmx_helper_initialize_packet_io_local(void);
 122
 123 /**
 124  * Returns the number of ports on the given interface.
 125  * The interface must be initialized before the port count
 126  * can be returned.
 127  *
 128  * @interface: Which interface to return port count for.
 129  *
 130  * Returns Port count for interface
 131  *         -1 for uninitialized interface
 132  */
 133 extern int cvmx_helper_ports_on_interface(int interface);
 134
 135 /**
 136  * Return the number of interfaces the chip has. Each interface
 137  * may have multiple ports. Most chips support two interfaces,
 138  * but the CNX0XX and CNX1XX are exceptions. These only support
 139  * one interface.
 140  *
 141  * Returns Number of interfaces on chip
 142  */
 143 extern int cvmx_helper_get_number_of_interfaces(void);
 144
 145 /**
 146  * Get the operating mode of an interface. Depending on the Octeon
 147  * chip and configuration, this function returns an enumeration
 148  * of the type of packet I/O supported by an interface.
 149  *
 150  * @interface: Interface to probe
 151  *
 152  * Returns Mode of the interface. Unknown or unsupported interfaces return
 153  *         DISABLED.
 154  */
 155 extern cvmx_helper_interface_mode_t cvmx_helper_interface_get_mode(int
 156                                                                    interface);
 157
 158 /**
 159  * Auto configure an IPD/PKO port link state and speed. This
 160  * function basically does the equivalent of:
 161  * cvmx_helper_link_set(ipd_port, cvmx_helper_link_get(ipd_port));
 162  *
 163  * @ipd_port: IPD/PKO port to auto configure
 164  *
 165  * Returns Link state after configure
 166  */
 167 extern cvmx_helper_link_info_t cvmx_helper_link_autoconf(int ipd_port);
 168
 169 /**
 170  * Return the link state of an IPD/PKO port as returned by
 171  * auto negotiation. The result of this function may not match
 172  * Octeon's link config if auto negotiation has changed since
 173  * the last call to cvmx_helper_link_set().
 174  *
 175  * @ipd_port: IPD/PKO port to query
 176  *
 177  * Returns Link state
 178  */
 179 extern cvmx_helper_link_info_t cvmx_helper_link_get(int ipd_port);
 180
 181 /**
 182  * Configure an IPD/PKO port for the specified link state. This
 183  * function does not influence auto negotiation at the PHY level.
 184  * The passed link state must always match the link state returned
 185  * by cvmx_helper_link_get(). It is normally best to use
 186  * cvmx_helper_link_autoconf() instead.
 187  *
 188  * @ipd_port:  IPD/PKO port to configure
 189  * @link_info: The new link state
 190  *
 191  * Returns Zero on success, negative on failure
 192  */
 193 extern int cvmx_helper_link_set(int ipd_port,
 194                                 cvmx_helper_link_info_t link_info);
 195
 196 /**
 197  * This function probes an interface to determine the actual
 198  * number of hardware ports connected to it. It doesn't setup the
 199  * ports or enable them. The main goal here is to set the global
 200  * interface_port_count[interface] correctly. Hardware setup of the
 201  * ports will be performed later.
 202  *
 203  * @interface: Interface to probe
 204  *
 205  * Returns Zero on success, negative on failure
 206  */
 207 extern int cvmx_helper_interface_probe(int interface);
 208 extern int cvmx_helper_interface_enumerate(int interface);
 209
 210 /**
 211  * Configure a port for internal and/or external loopback. Internal loopback
 212  * causes packets sent by the port to be received by Octeon. External loopback
 213  * causes packets received from the wire to sent out again.
 214  *
 215  * @ipd_port: IPD/PKO port to loopback.
 216  * @enable_internal:
 217  *                 Non zero if you want internal loopback
 218  * @enable_external:
 219  *                 Non zero if you want external loopback
 220  *
 221  * Returns Zero on success, negative on failure.
 222  */
 223 extern int cvmx_helper_configure_loopback(int ipd_port, int enable_internal,
 224                                           int enable_external);
 225
 226 #endif /* __CVMX_HELPER_H__ */