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freebsd-skq/sys/contrib/octeon-sdk/cvmx-pip.h
jmallett 4948f4b8d5 Import the Cavium Simple Executive from the Cavium Octeon SDK. The Simple 
Executive is a library that can be used by standalone applications and kernels
to abstract access to Octeon SoC and board-specific hardware and facilities.
The FreeBSD port to Octeon will be updated to use this where possible.
2010-07-20 07:19:43 +00:00

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/***********************license start***************
* Copyright (c) 2003-2008 Cavium Networks (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 Networks nor the names of
* its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
*
* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
* AND WITH ALL FAULTS AND CAVIUM NETWORKS 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.
*
*
* For any questions regarding licensing please contact marketing@caviumnetworks.com
*
***********************license end**************************************/
/**
* @file
*
* Interface to the hardware Packet Input Processing unit.
*
* <hr>$Revision: 41586 $<hr>
*/
#ifndef __CVMX_PIP_H__
#define __CVMX_PIP_H__
#include "cvmx-wqe.h"
#include "cvmx-fpa.h"
#ifndef CVMX_DONT_INCLUDE_CONFIG
#include "executive-config.h"
#endif
#ifdef __cplusplus
extern "C" {
#endif
#define CVMX_PIP_NUM_INPUT_PORTS 40
#define CVMX_PIP_NUM_WATCHERS 4
//
// Encodes the different error and exception codes
//
typedef enum
{
CVMX_PIP_L4_NO_ERR = 0ull,
// 1 = TCP (UDP) packet not long enough to cover TCP (UDP) header
CVMX_PIP_L4_MAL_ERR = 1ull,
// 2 = TCP/UDP checksum failure
CVMX_PIP_CHK_ERR = 2ull,
// 3 = TCP/UDP length check (TCP/UDP length does not match IP length)
CVMX_PIP_L4_LENGTH_ERR = 3ull,
// 4 = illegal TCP/UDP port (either source or dest port is zero)
CVMX_PIP_BAD_PRT_ERR = 4ull,
// 8 = TCP flags = FIN only
CVMX_PIP_TCP_FLG8_ERR = 8ull,
// 9 = TCP flags = 0
CVMX_PIP_TCP_FLG9_ERR = 9ull,
// 10 = TCP flags = FIN+RST+*
CVMX_PIP_TCP_FLG10_ERR = 10ull,
// 11 = TCP flags = SYN+URG+*
CVMX_PIP_TCP_FLG11_ERR = 11ull,
// 12 = TCP flags = SYN+RST+*
CVMX_PIP_TCP_FLG12_ERR = 12ull,
// 13 = TCP flags = SYN+FIN+*
CVMX_PIP_TCP_FLG13_ERR = 13ull
} cvmx_pip_l4_err_t;
typedef enum
{
CVMX_PIP_IP_NO_ERR = 0ull,
// 1 = not IPv4 or IPv6
CVMX_PIP_NOT_IP = 1ull,
// 2 = IPv4 header checksum violation
CVMX_PIP_IPV4_HDR_CHK = 2ull,
// 3 = malformed (packet not long enough to cover IP hdr)
CVMX_PIP_IP_MAL_HDR = 3ull,
// 4 = malformed (packet not long enough to cover len in IP hdr)
CVMX_PIP_IP_MAL_PKT = 4ull,
// 5 = TTL / hop count equal zero
CVMX_PIP_TTL_HOP = 5ull,
// 6 = IPv4 options / IPv6 early extension headers
CVMX_PIP_OPTS = 6ull
} cvmx_pip_ip_exc_t;
/**
* NOTES
* late collision (data received before collision)
* late collisions cannot be detected by the receiver
* they would appear as JAM bits which would appear as bad FCS
* or carrier extend error which is CVMX_PIP_EXTEND_ERR
*/
typedef enum
{
/**
* No error
*/
CVMX_PIP_RX_NO_ERR = 0ull,
CVMX_PIP_PARTIAL_ERR = 1ull, // RGM+SPI 1 = partially received packet (buffering/bandwidth not adequate)
CVMX_PIP_JABBER_ERR = 2ull, // RGM+SPI 2 = receive packet too large and truncated
CVMX_PIP_OVER_FCS_ERR = 3ull, // RGM 3 = max frame error (pkt len > max frame len) (with FCS error)
CVMX_PIP_OVER_ERR = 4ull, // RGM+SPI 4 = max frame error (pkt len > max frame len)
CVMX_PIP_ALIGN_ERR = 5ull, // RGM 5 = nibble error (data not byte multiple - 100M and 10M only)
CVMX_PIP_UNDER_FCS_ERR = 6ull, // RGM 6 = min frame error (pkt len < min frame len) (with FCS error)
CVMX_PIP_GMX_FCS_ERR = 7ull, // RGM 7 = FCS error
CVMX_PIP_UNDER_ERR = 8ull, // RGM+SPI 8 = min frame error (pkt len < min frame len)
CVMX_PIP_EXTEND_ERR = 9ull, // RGM 9 = Frame carrier extend error
CVMX_PIP_LENGTH_ERR = 10ull, // RGM 10 = length mismatch (len did not match len in L2 length/type)
CVMX_PIP_DAT_ERR = 11ull, // RGM 11 = Frame error (some or all data bits marked err)
CVMX_PIP_DIP_ERR = 11ull, // SPI 11 = DIP4 error
CVMX_PIP_SKIP_ERR = 12ull, // RGM 12 = packet was not large enough to pass the skipper - no inspection could occur
CVMX_PIP_NIBBLE_ERR = 13ull, // RGM 13 = studder error (data not repeated - 100M and 10M only)
CVMX_PIP_PIP_FCS = 16L, // RGM+SPI 16 = FCS error
CVMX_PIP_PIP_SKIP_ERR = 17L, // RGM+SPI+PCI 17 = packet was not large enough to pass the skipper - no inspection could occur
CVMX_PIP_PIP_L2_MAL_HDR= 18L // RGM+SPI+PCI 18 = malformed l2 (packet not long enough to cover L2 hdr)
// NOTES
// xx = late collision (data received before collision)
// late collisions cannot be detected by the receiver
// they would appear as JAM bits which would appear as bad FCS
// or carrier extend error which is CVMX_PIP_EXTEND_ERR
} cvmx_pip_rcv_err_t;
/**
* This defines the err_code field errors in the work Q entry
*/
typedef union
{
cvmx_pip_l4_err_t l4_err;
cvmx_pip_ip_exc_t ip_exc;
cvmx_pip_rcv_err_t rcv_err;
} cvmx_pip_err_t;
/**
* Status statistics for a port
*/
typedef struct
{
uint32_t dropped_octets; /**< Inbound octets marked to be dropped by the IPD */
uint32_t dropped_packets; /**< Inbound packets marked to be dropped by the IPD */
uint32_t pci_raw_packets; /**< RAW PCI Packets received by PIP per port */
uint32_t octets; /**< Number of octets processed by PIP */
uint32_t packets; /**< Number of packets processed by PIP */
uint32_t multicast_packets; /**< Number of indentified L2 multicast packets.
Does not include broadcast packets.
Only includes packets whose parse mode is
SKIP_TO_L2 */
uint32_t broadcast_packets; /**< Number of indentified L2 broadcast packets.
Does not include multicast packets.
Only includes packets whose parse mode is
SKIP_TO_L2 */
uint32_t len_64_packets; /**< Number of 64B packets */
uint32_t len_65_127_packets; /**< Number of 65-127B packets */
uint32_t len_128_255_packets; /**< Number of 128-255B packets */
uint32_t len_256_511_packets; /**< Number of 256-511B packets */
uint32_t len_512_1023_packets; /**< Number of 512-1023B packets */
uint32_t len_1024_1518_packets; /**< Number of 1024-1518B packets */
uint32_t len_1519_max_packets; /**< Number of 1519-max packets */
uint32_t fcs_align_err_packets; /**< Number of packets with FCS or Align opcode errors */
uint32_t runt_packets; /**< Number of packets with length < min */
uint32_t runt_crc_packets; /**< Number of packets with length < min and FCS error */
uint32_t oversize_packets; /**< Number of packets with length > max */
uint32_t oversize_crc_packets; /**< Number of packets with length > max and FCS error */
uint32_t inb_packets; /**< Number of packets without GMX/SPX/PCI errors received by PIP */
uint64_t inb_octets; /**< Total number of octets from all packets received by PIP, including CRC */
uint16_t inb_errors; /**< Number of packets with GMX/SPX/PCI errors received by PIP */
} cvmx_pip_port_status_t;
/**
* Definition of the PIP custom header that can be prepended
* to a packet by external hardware.
*/
typedef union
{
uint64_t u64;
struct
{
uint64_t rawfull : 1; /**< Documented as R - Set if the Packet is RAWFULL. If set,
this header must be the full 8 bytes */
uint64_t reserved0 : 5; /**< Must be zero */
cvmx_pip_port_parse_mode_t parse_mode : 2; /**< PIP parse mode for this packet */
uint64_t reserved1 : 1; /**< Must be zero */
uint64_t skip_len : 7; /**< Skip amount, including this header, to the beginning of the packet */
uint64_t reserved2 : 6; /**< Must be zero */
uint64_t qos : 3; /**< POW input queue for this packet */
uint64_t grp : 4; /**< POW input group for this packet */
uint64_t rs : 1; /**< Flag to store this packet in the work queue entry, if possible */
cvmx_pow_tag_type_t tag_type : 2; /**< POW input tag type */
uint64_t tag : 32; /**< POW input tag */
} s;
} cvmx_pip_pkt_inst_hdr_t;
/* CSR typedefs have been moved to cvmx-csr-*.h */
/**
* Configure an ethernet input port
*
* @param port_num Port number to configure
* @param port_cfg Port hardware configuration
* @param port_tag_cfg
* Port POW tagging configuration
*/
static inline void cvmx_pip_config_port(uint64_t port_num,
cvmx_pip_port_cfg_t port_cfg,
cvmx_pip_port_tag_cfg_t port_tag_cfg)
{
cvmx_write_csr(CVMX_PIP_PRT_CFGX(port_num), port_cfg.u64);
cvmx_write_csr(CVMX_PIP_PRT_TAGX(port_num), port_tag_cfg.u64);
}
/**
* @deprecated This function is a thin wrapper around the Pass1 version
* of the CVMX_PIP_QOS_WATCHX CSR; Pass2 has added a field for
* setting the group that is incompatible with this function,
* the preferred upgrade path is to use the CSR directly.
*
* Configure the global QoS packet watchers. Each watcher is
* capable of matching a field in a packet to determine the
* QoS queue for scheduling.
*
* @param watcher Watcher number to configure (0 - 3).
* @param match_type Watcher match type
* @param match_value
* Value the watcher will match against
* @param qos QoS queue for packets matching this watcher
*/
static inline void cvmx_pip_config_watcher(uint64_t watcher,
cvmx_pip_qos_watch_types match_type,
uint64_t match_value, uint64_t qos)
{
cvmx_pip_port_watcher_cfg_t watcher_config;
watcher_config.u64 = 0;
watcher_config.s.match_type = match_type;
watcher_config.s.match_value = match_value;
watcher_config.s.qos = qos;
cvmx_write_csr(CVMX_PIP_QOS_WATCHX(watcher), watcher_config.u64);
}
/**
* Configure the VLAN priority to QoS queue mapping.
*
* @param vlan_priority
* VLAN priority (0-7)
* @param qos QoS queue for packets matching this watcher
*/
static inline void cvmx_pip_config_vlan_qos(uint64_t vlan_priority, uint64_t qos)
{
cvmx_pip_qos_vlanx_t pip_qos_vlanx;
pip_qos_vlanx.u64 = 0;
pip_qos_vlanx.s.qos = qos;
cvmx_write_csr(CVMX_PIP_QOS_VLANX(vlan_priority), pip_qos_vlanx.u64);
}
/**
* Configure the Diffserv to QoS queue mapping.
*
* @param diffserv Diffserv field value (0-63)
* @param qos QoS queue for packets matching this watcher
*/
static inline void cvmx_pip_config_diffserv_qos(uint64_t diffserv, uint64_t qos)
{
cvmx_pip_qos_diffx_t pip_qos_diffx;
pip_qos_diffx.u64 = 0;
pip_qos_diffx.s.qos = qos;
cvmx_write_csr(CVMX_PIP_QOS_DIFFX(diffserv), pip_qos_diffx.u64);
}
/**
* Get the status counters for a port.
*
* @param port_num Port number to get statistics for.
* @param clear Set to 1 to clear the counters after they are read
* @param status Where to put the results.
*/
static inline void cvmx_pip_get_port_status(uint64_t port_num, uint64_t clear, cvmx_pip_port_status_t *status)
{
cvmx_pip_stat_ctl_t pip_stat_ctl;
cvmx_pip_stat0_prtx_t stat0;
cvmx_pip_stat1_prtx_t stat1;
cvmx_pip_stat2_prtx_t stat2;
cvmx_pip_stat3_prtx_t stat3;
cvmx_pip_stat4_prtx_t stat4;
cvmx_pip_stat5_prtx_t stat5;
cvmx_pip_stat6_prtx_t stat6;
cvmx_pip_stat7_prtx_t stat7;
cvmx_pip_stat8_prtx_t stat8;
cvmx_pip_stat9_prtx_t stat9;
cvmx_pip_stat_inb_pktsx_t pip_stat_inb_pktsx;
cvmx_pip_stat_inb_octsx_t pip_stat_inb_octsx;
cvmx_pip_stat_inb_errsx_t pip_stat_inb_errsx;
pip_stat_ctl.u64 = 0;
pip_stat_ctl.s.rdclr = clear;
cvmx_write_csr(CVMX_PIP_STAT_CTL, pip_stat_ctl.u64);
stat0.u64 = cvmx_read_csr(CVMX_PIP_STAT0_PRTX(port_num));
stat1.u64 = cvmx_read_csr(CVMX_PIP_STAT1_PRTX(port_num));
stat2.u64 = cvmx_read_csr(CVMX_PIP_STAT2_PRTX(port_num));
stat3.u64 = cvmx_read_csr(CVMX_PIP_STAT3_PRTX(port_num));
stat4.u64 = cvmx_read_csr(CVMX_PIP_STAT4_PRTX(port_num));
stat5.u64 = cvmx_read_csr(CVMX_PIP_STAT5_PRTX(port_num));
stat6.u64 = cvmx_read_csr(CVMX_PIP_STAT6_PRTX(port_num));
stat7.u64 = cvmx_read_csr(CVMX_PIP_STAT7_PRTX(port_num));
stat8.u64 = cvmx_read_csr(CVMX_PIP_STAT8_PRTX(port_num));
stat9.u64 = cvmx_read_csr(CVMX_PIP_STAT9_PRTX(port_num));
pip_stat_inb_pktsx.u64 = cvmx_read_csr(CVMX_PIP_STAT_INB_PKTSX(port_num));
pip_stat_inb_octsx.u64 = cvmx_read_csr(CVMX_PIP_STAT_INB_OCTSX(port_num));
pip_stat_inb_errsx.u64 = cvmx_read_csr(CVMX_PIP_STAT_INB_ERRSX(port_num));
status->dropped_octets = stat0.s.drp_octs;
status->dropped_packets = stat0.s.drp_pkts;
status->octets = stat1.s.octs;
status->pci_raw_packets = stat2.s.raw;
status->packets = stat2.s.pkts;
status->multicast_packets = stat3.s.mcst;
status->broadcast_packets = stat3.s.bcst;
status->len_64_packets = stat4.s.h64;
status->len_65_127_packets = stat4.s.h65to127;
status->len_128_255_packets = stat5.s.h128to255;
status->len_256_511_packets = stat5.s.h256to511;
status->len_512_1023_packets = stat6.s.h512to1023;
status->len_1024_1518_packets = stat6.s.h1024to1518;
status->len_1519_max_packets = stat7.s.h1519;
status->fcs_align_err_packets = stat7.s.fcs;
status->runt_packets = stat8.s.undersz;
status->runt_crc_packets = stat8.s.frag;
status->oversize_packets = stat9.s.oversz;
status->oversize_crc_packets = stat9.s.jabber;
status->inb_packets = pip_stat_inb_pktsx.s.pkts;
status->inb_octets = pip_stat_inb_octsx.s.octs;
status->inb_errors = pip_stat_inb_errsx.s.errs;
if (cvmx_octeon_is_pass1())
{
/* Kludge to fix Octeon Pass 1 errata - Drop counts don't work */
if (status->inb_packets > status->packets)
status->dropped_packets = status->inb_packets - status->packets;
else
status->dropped_packets = 0;
if (status->inb_octets - status->inb_packets*4 > status->octets)
status->dropped_octets = status->inb_octets - status->inb_packets*4 - status->octets;
else
status->dropped_octets = 0;
}
}
/**
* Configure the hardware CRC engine
*
* @param interface Interface to configure (0 or 1)
* @param invert_result
* Invert the result of the CRC
* @param reflect Reflect
* @param initialization_vector
* CRC initialization vector
*/
static inline void cvmx_pip_config_crc(uint64_t interface, uint64_t invert_result, uint64_t reflect, uint32_t initialization_vector)
{
if ((OCTEON_IS_MODEL(OCTEON_CN38XX) || OCTEON_IS_MODEL(OCTEON_CN58XX)))
{
cvmx_pip_crc_ctlx_t config;
cvmx_pip_crc_ivx_t pip_crc_ivx;
config.u64 = 0;
config.s.invres = invert_result;
config.s.reflect = reflect;
cvmx_write_csr(CVMX_PIP_CRC_CTLX(interface), config.u64);
pip_crc_ivx.u64 = 0;
pip_crc_ivx.s.iv = initialization_vector;
cvmx_write_csr(CVMX_PIP_CRC_IVX(interface), pip_crc_ivx.u64);
}
}
/**
* Clear all bits in a tag mask. This should be called on
* startup before any calls to cvmx_pip_tag_mask_set. Each bit
* set in the final mask represent a byte used in the packet for
* tag generation.
*
* @param mask_index Which tag mask to clear (0..3)
*/
static inline void cvmx_pip_tag_mask_clear(uint64_t mask_index)
{
uint64_t index;
cvmx_pip_tag_incx_t pip_tag_incx;
pip_tag_incx.u64 = 0;
pip_tag_incx.s.en = 0;
for (index=mask_index*16; index<(mask_index+1)*16; index++)
cvmx_write_csr(CVMX_PIP_TAG_INCX(index), pip_tag_incx.u64);
}
/**
* Sets a range of bits in the tag mask. The tag mask is used
* when the cvmx_pip_port_tag_cfg_t tag_mode is non zero.
* There are four separate masks that can be configured.
*
* @param mask_index Which tag mask to modify (0..3)
* @param offset Offset into the bitmask to set bits at. Use the GCC macro
* offsetof() to determine the offsets into packet headers.
* For example, offsetof(ethhdr, protocol) returns the offset
* of the ethernet protocol field. The bitmask selects which bytes
* to include the the tag, with bit offset X selecting byte at offset X
* from the beginning of the packet data.
* @param len Number of bytes to include. Usually this is the sizeof()
* the field.
*/
static inline void cvmx_pip_tag_mask_set(uint64_t mask_index, uint64_t offset, uint64_t len)
{
while (len--)
{
cvmx_pip_tag_incx_t pip_tag_incx;
uint64_t index = mask_index*16 + offset/8;
pip_tag_incx.u64 = cvmx_read_csr(CVMX_PIP_TAG_INCX(index));
pip_tag_incx.s.en |= 0x80 >> (offset & 0x7);
cvmx_write_csr(CVMX_PIP_TAG_INCX(index), pip_tag_incx.u64);
offset++;
}
}
#ifdef __cplusplus
}
#endif
#endif /* __CVMX_PIP_H__ */
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