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linux-next/arch/mips/include/asm/octeon/cvmx-pip.h
David Daney af866496c7 MIPS: Octeon: Move some Ethernet support files out of staging. 
Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: netdev@vger.kernel.org
Cc: devel@driverdev.osuosl.org
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Patchwork: https://patchwork.linux-mips.org/patch/2942/
Patchwork: https://patchwork.linux-mips.org/patch/3012/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-12-07 22:03:28 +00:00

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/***********************license start***************
* Author: Cavium Networks
*
* Contact: support@caviumnetworks.com
* This file is part of the OCTEON SDK
*
* Copyright (c) 2003-2008 Cavium Networks
*
* This file is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, Version 2, as
* published by the Free Software Foundation.
*
* This file is distributed in the hope that it will be useful, but
* AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
* NONINFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this file; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
* or visit http://www.gnu.org/licenses/.
*
* This file may also be available under a different license from Cavium.
* Contact Cavium Networks for more information
***********************license end**************************************/
/*
* Interface to the hardware Packet Input Processing unit.
*
*/
#ifndef __CVMX_PIP_H__
#define __CVMX_PIP_H__
#include "cvmx-wqe.h"
#include "cvmx-fpa.h"
#include "cvmx-pip-defs.h"
#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,
/* RGM+SPI 1 = partially received packet (buffering/bandwidth
* not adequate) */
CVMX_PIP_PARTIAL_ERR = 1ull,
/* RGM+SPI 2 = receive packet too large and truncated */
CVMX_PIP_JABBER_ERR = 2ull,
/*
* RGM 3 = max frame error (pkt len > max frame len) (with FCS
* error)
*/
CVMX_PIP_OVER_FCS_ERR = 3ull,
/* RGM+SPI 4 = max frame error (pkt len > max frame len) */
CVMX_PIP_OVER_ERR = 4ull,
/*
* RGM 5 = nibble error (data not byte multiple - 100M and 10M
* only)
*/
CVMX_PIP_ALIGN_ERR = 5ull,
/*
* RGM 6 = min frame error (pkt len < min frame len) (with FCS
* error)
*/
CVMX_PIP_UNDER_FCS_ERR = 6ull,
/* RGM 7 = FCS error */
CVMX_PIP_GMX_FCS_ERR = 7ull,
/* RGM+SPI 8 = min frame error (pkt len < min frame len) */
CVMX_PIP_UNDER_ERR = 8ull,
/* RGM 9 = Frame carrier extend error */
CVMX_PIP_EXTEND_ERR = 9ull,
/*
* RGM 10 = length mismatch (len did not match len in L2
* length/type)
*/
CVMX_PIP_LENGTH_ERR = 10ull,
/* RGM 11 = Frame error (some or all data bits marked err) */
CVMX_PIP_DAT_ERR = 11ull,
/* SPI 11 = DIP4 error */
CVMX_PIP_DIP_ERR = 11ull,
/*
* RGM 12 = packet was not large enough to pass the skipper -
* no inspection could occur.
*/
CVMX_PIP_SKIP_ERR = 12ull,
/*
* RGM 13 = studder error (data not repeated - 100M and 10M
* only)
*/
CVMX_PIP_NIBBLE_ERR = 13ull,
/* RGM+SPI 16 = FCS error */
CVMX_PIP_PIP_FCS = 16L,
/*
* RGM+SPI+PCI 17 = packet was not large enough to pass the
* skipper - no inspection could occur.
*/
CVMX_PIP_PIP_SKIP_ERR = 17L,
/*
* RGM+SPI+PCI 18 = malformed l2 (packet not long enough to
* cover L2 hdr).
*/
CVMX_PIP_PIP_L2_MAL_HDR = 18L
/*
* 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 {
/* Inbound octets marked to be dropped by the IPD */
uint32_t dropped_octets;
/* Inbound packets marked to be dropped by the IPD */
uint32_t dropped_packets;
/* RAW PCI Packets received by PIP per port */
uint32_t pci_raw_packets;
/* Number of octets processed by PIP */
uint32_t octets;
/* Number of packets processed by PIP */
uint32_t packets;
/*
* Number of indentified L2 multicast packets. Does not
* include broadcast packets. Only includes packets whose
* parse mode is SKIP_TO_L2
*/
uint32_t multicast_packets;
/*
* Number of indentified L2 broadcast packets. Does not
* include multicast packets. Only includes packets whose
* parse mode is SKIP_TO_L2
*/
uint32_t broadcast_packets;
/* Number of 64B packets */
uint32_t len_64_packets;
/* Number of 65-127B packets */
uint32_t len_65_127_packets;
/* Number of 128-255B packets */
uint32_t len_128_255_packets;
/* Number of 256-511B packets */
uint32_t len_256_511_packets;
/* Number of 512-1023B packets */
uint32_t len_512_1023_packets;
/* Number of 1024-1518B packets */
uint32_t len_1024_1518_packets;
/* Number of 1519-max packets */
uint32_t len_1519_max_packets;
/* Number of packets with FCS or Align opcode errors */
uint32_t fcs_align_err_packets;
/* Number of packets with length < min */
uint32_t runt_packets;
/* Number of packets with length < min and FCS error */
uint32_t runt_crc_packets;
/* Number of packets with length > max */
uint32_t oversize_packets;
/* Number of packets with length > max and FCS error */
uint32_t oversize_crc_packets;
/* Number of packets without GMX/SPX/PCI errors received by PIP */
uint32_t inb_packets;
/*
* Total number of octets from all packets received by PIP,
* including CRC
*/
uint64_t inb_octets;
/* Number of packets with GMX/SPX/PCI errors received by PIP */
uint16_t inb_errors;
} 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 {
/*
* Documented as R - Set if the Packet is RAWFULL. If
* set, this header must be the full 8 bytes.
*/
uint64_t rawfull:1;
/* Must be zero */
uint64_t reserved0:5;
/* PIP parse mode for this packet */
uint64_t parse_mode:2;
/* Must be zero */
uint64_t reserved1:1;
/*
* Skip amount, including this header, to the
* beginning of the packet
*/
uint64_t skip_len:7;
/* Must be zero */
uint64_t reserved2:6;
/* POW input queue for this packet */
uint64_t qos:3;
/* POW input group for this packet */
uint64_t grp:4;
/*
* Flag to store this packet in the work queue entry,
* if possible
*/
uint64_t rs:1;
/* POW input tag type */
uint64_t tag_type:2;
/* POW input tag */
uint64_t tag:32;
} s;
} cvmx_pip_pkt_inst_hdr_t;
/* CSR typedefs have been moved to cvmx-csr-*.h */
/**
* Configure an ethernet input port
*
* @port_num: Port number to configure
* @port_cfg: Port hardware configuration
* @port_tag_cfg:
* Port POW tagging configuration
*/
static inline void cvmx_pip_config_port(uint64_t port_num,
union cvmx_pip_prt_cfgx port_cfg,
union cvmx_pip_prt_tagx 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);
}
#if 0
/**
* @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.
*
* @watcher: Watcher number to configure (0 - 3).
* @match_type: Watcher match type
* @match_value:
* Value the watcher will match against
* @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);
}
#endif
/**
* Configure the VLAN priority to QoS queue mapping.
*
* @vlan_priority:
* VLAN priority (0-7)
* @qos: QoS queue for packets matching this watcher
*/
static inline void cvmx_pip_config_vlan_qos(uint64_t vlan_priority,
uint64_t qos)
{
union cvmx_pip_qos_vlanx 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.
*
* @diffserv: Diffserv field value (0-63)
* @qos: QoS queue for packets matching this watcher
*/
static inline void cvmx_pip_config_diffserv_qos(uint64_t diffserv, uint64_t qos)
{
union cvmx_pip_qos_diffx 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.
*
* @port_num: Port number to get statistics for.
* @clear: Set to 1 to clear the counters after they are read
* @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)
{
union cvmx_pip_stat_ctl pip_stat_ctl;
union cvmx_pip_stat0_prtx stat0;
union cvmx_pip_stat1_prtx stat1;
union cvmx_pip_stat2_prtx stat2;
union cvmx_pip_stat3_prtx stat3;
union cvmx_pip_stat4_prtx stat4;
union cvmx_pip_stat5_prtx stat5;
union cvmx_pip_stat6_prtx stat6;
union cvmx_pip_stat7_prtx stat7;
union cvmx_pip_stat8_prtx stat8;
union cvmx_pip_stat9_prtx stat9;
union cvmx_pip_stat_inb_pktsx pip_stat_inb_pktsx;
union cvmx_pip_stat_inb_octsx pip_stat_inb_octsx;
union cvmx_pip_stat_inb_errsx 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
*
* @interface: Interface to configure (0 or 1)
* @invert_result:
* Invert the result of the CRC
* @reflect: Reflect
* @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)) {
union cvmx_pip_crc_ctlx config;
union cvmx_pip_crc_ivx 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.
*
* @mask_index: Which tag mask to clear (0..3)
*/
static inline void cvmx_pip_tag_mask_clear(uint64_t mask_index)
{
uint64_t index;
union cvmx_pip_tag_incx 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.
*
* @mask_index: Which tag mask to modify (0..3)
* @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.
* @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--) {
union cvmx_pip_tag_incx 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++;
}
}
#endif /* __CVMX_PIP_H__ */
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