mirror of https://gitee.com/openkylin/linux.git
617 lines
19 KiB
C
617 lines
19 KiB
C
/*
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* Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* 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
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef _IPATH_COMMON_H
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#define _IPATH_COMMON_H
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/*
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* This file contains defines, structures, etc. that are used
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* to communicate between kernel and user code.
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*/
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/* This is the IEEE-assigned OUI for PathScale, Inc. */
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#define IPATH_SRC_OUI_1 0x00
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#define IPATH_SRC_OUI_2 0x11
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#define IPATH_SRC_OUI_3 0x75
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/* version of protocol header (known to chip also). In the long run,
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* we should be able to generate and accept a range of version numbers;
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* for now we only accept one, and it's compiled in.
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*/
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#define IPS_PROTO_VERSION 2
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/*
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* These are compile time constants that you may want to enable or disable
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* if you are trying to debug problems with code or performance.
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* IPATH_VERBOSE_TRACING define as 1 if you want additional tracing in
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* fastpath code
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* IPATH_TRACE_REGWRITES define as 1 if you want register writes to be
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* traced in faspath code
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* _IPATH_TRACING define as 0 if you want to remove all tracing in a
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* compilation unit
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* _IPATH_DEBUGGING define as 0 if you want to remove debug prints
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*/
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/*
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* The value in the BTH QP field that InfiniPath uses to differentiate
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* an infinipath protocol IB packet vs standard IB transport
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*/
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#define IPATH_KD_QP 0x656b79
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/*
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* valid states passed to ipath_set_linkstate() user call
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*/
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#define IPATH_IB_LINKDOWN 0
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#define IPATH_IB_LINKARM 1
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#define IPATH_IB_LINKACTIVE 2
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#define IPATH_IB_LINKINIT 3
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#define IPATH_IB_LINKDOWN_SLEEP 4
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#define IPATH_IB_LINKDOWN_DISABLE 5
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/*
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* stats maintained by the driver. For now, at least, this is global
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* to all minor devices.
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*/
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struct infinipath_stats {
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/* number of interrupts taken */
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__u64 sps_ints;
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/* number of interrupts for errors */
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__u64 sps_errints;
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/* number of errors from chip (not incl. packet errors or CRC) */
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__u64 sps_errs;
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/* number of packet errors from chip other than CRC */
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__u64 sps_pkterrs;
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/* number of packets with CRC errors (ICRC and VCRC) */
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__u64 sps_crcerrs;
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/* number of hardware errors reported (parity, etc.) */
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__u64 sps_hwerrs;
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/* number of times IB link changed state unexpectedly */
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__u64 sps_iblink;
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/* no longer used; left for compatibility */
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__u64 sps_unused3;
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/* number of kernel (port0) packets received */
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__u64 sps_port0pkts;
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/* number of "ethernet" packets sent by driver */
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__u64 sps_ether_spkts;
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/* number of "ethernet" packets received by driver */
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__u64 sps_ether_rpkts;
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/* number of SMA packets sent by driver */
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__u64 sps_sma_spkts;
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/* number of SMA packets received by driver */
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__u64 sps_sma_rpkts;
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/* number of times all ports rcvhdrq was full and packet dropped */
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__u64 sps_hdrqfull;
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/* number of times all ports egrtid was full and packet dropped */
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__u64 sps_etidfull;
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/*
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* number of times we tried to send from driver, but no pio buffers
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* avail
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*/
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__u64 sps_nopiobufs;
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/* number of ports currently open */
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__u64 sps_ports;
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/* list of pkeys (other than default) accepted (0 means not set) */
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__u16 sps_pkeys[4];
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/* lids for up to 4 infinipaths, indexed by infinipath # */
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__u16 sps_lid[4];
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/* number of user ports per chip (not IB ports) */
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__u32 sps_nports;
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/* not our interrupt, or already handled */
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__u32 sps_nullintr;
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/* max number of packets handled per receive call */
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__u32 sps_maxpkts_call;
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/* avg number of packets handled per receive call */
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__u32 sps_avgpkts_call;
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/* total number of pages locked */
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__u64 sps_pagelocks;
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/* total number of pages unlocked */
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__u64 sps_pageunlocks;
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/*
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* Number of packets dropped in kernel other than errors (ether
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* packets if ipath not configured, sma/mad, etc.)
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*/
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__u64 sps_krdrops;
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/* mlids for up to 4 infinipaths, indexed by infinipath # */
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__u16 sps_mlid[4];
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/* pad for future growth */
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__u64 __sps_pad[45];
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};
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/*
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* These are the status bits readable (in ascii form, 64bit value)
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* from the "status" sysfs file.
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*/
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#define IPATH_STATUS_INITTED 0x1 /* basic initialization done */
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#define IPATH_STATUS_DISABLED 0x2 /* hardware disabled */
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/* Device has been disabled via admin request */
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#define IPATH_STATUS_ADMIN_DISABLED 0x4
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#define IPATH_STATUS_OIB_SMA 0x8 /* ipath_mad kernel SMA running */
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#define IPATH_STATUS_SMA 0x10 /* user SMA running */
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/* Chip has been found and initted */
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#define IPATH_STATUS_CHIP_PRESENT 0x20
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/* IB link is at ACTIVE, usable for data traffic */
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#define IPATH_STATUS_IB_READY 0x40
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/* link is configured, LID, MTU, etc. have been set */
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#define IPATH_STATUS_IB_CONF 0x80
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/* no link established, probably no cable */
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#define IPATH_STATUS_IB_NOCABLE 0x100
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/* A Fatal hardware error has occurred. */
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#define IPATH_STATUS_HWERROR 0x200
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/*
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* The list of usermode accessible registers. Also see Reg_* later in file.
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*/
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typedef enum _ipath_ureg {
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/* (RO) DMA RcvHdr to be used next. */
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ur_rcvhdrtail = 0,
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/* (RW) RcvHdr entry to be processed next by host. */
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ur_rcvhdrhead = 1,
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/* (RO) Index of next Eager index to use. */
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ur_rcvegrindextail = 2,
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/* (RW) Eager TID to be processed next */
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ur_rcvegrindexhead = 3,
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/* For internal use only; max register number. */
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_IPATH_UregMax
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} ipath_ureg;
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/* bit values for spi_runtime_flags */
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#define IPATH_RUNTIME_HT 0x1
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#define IPATH_RUNTIME_PCIE 0x2
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#define IPATH_RUNTIME_FORCE_WC_ORDER 0x4
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#define IPATH_RUNTIME_RCVHDR_COPY 0x8
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/*
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* This structure is returned by ipath_userinit() immediately after
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* open to get implementation-specific info, and info specific to this
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* instance.
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*
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* This struct must have explict pad fields where type sizes
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* may result in different alignments between 32 and 64 bit
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* programs, since the 64 bit * bit kernel requires the user code
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* to have matching offsets
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*/
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struct ipath_base_info {
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/* version of hardware, for feature checking. */
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__u32 spi_hw_version;
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/* version of software, for feature checking. */
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__u32 spi_sw_version;
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/* InfiniPath port assigned, goes into sent packets */
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__u32 spi_port;
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/*
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* IB MTU, packets IB data must be less than this.
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* The MTU is in bytes, and will be a multiple of 4 bytes.
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*/
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__u32 spi_mtu;
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/*
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* Size of a PIO buffer. Any given packet's total size must be less
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* than this (in words). Included is the starting control word, so
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* if 513 is returned, then total pkt size is 512 words or less.
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*/
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__u32 spi_piosize;
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/* size of the TID cache in infinipath, in entries */
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__u32 spi_tidcnt;
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/* size of the TID Eager list in infinipath, in entries */
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__u32 spi_tidegrcnt;
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/* size of a single receive header queue entry. */
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__u32 spi_rcvhdrent_size;
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/*
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* Count of receive header queue entries allocated.
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* This may be less than the spu_rcvhdrcnt passed in!.
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*/
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__u32 spi_rcvhdr_cnt;
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/* per-chip and other runtime features bitmap (IPATH_RUNTIME_*) */
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__u32 spi_runtime_flags;
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/* address where receive buffer queue is mapped into */
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__u64 spi_rcvhdr_base;
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/* user program. */
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/* base address of eager TID receive buffers. */
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__u64 spi_rcv_egrbufs;
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/* Allocated by initialization code, not by protocol. */
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/*
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* Size of each TID buffer in host memory, starting at
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* spi_rcv_egrbufs. The buffers are virtually contiguous.
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*/
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__u32 spi_rcv_egrbufsize;
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/*
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* The special QP (queue pair) value that identifies an infinipath
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* protocol packet from standard IB packets. More, probably much
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* more, to be added.
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*/
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__u32 spi_qpair;
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/*
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* User register base for init code, not to be used directly by
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* protocol or applications.
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*/
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__u64 __spi_uregbase;
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/*
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* Maximum buffer size in bytes that can be used in a single TID
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* entry (assuming the buffer is aligned to this boundary). This is
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* the minimum of what the hardware and software support Guaranteed
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* to be a power of 2.
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*/
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__u32 spi_tid_maxsize;
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/*
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* alignment of each pio send buffer (byte count
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* to add to spi_piobufbase to get to second buffer)
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*/
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__u32 spi_pioalign;
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/*
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* The index of the first pio buffer available to this process;
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* needed to do lookup in spi_pioavailaddr; not added to
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* spi_piobufbase.
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*/
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__u32 spi_pioindex;
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/* number of buffers mapped for this process */
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__u32 spi_piocnt;
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/*
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* Base address of writeonly pio buffers for this process.
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* Each buffer has spi_piosize words, and is aligned on spi_pioalign
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* boundaries. spi_piocnt buffers are mapped from this address
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*/
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__u64 spi_piobufbase;
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/*
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* Base address of readonly memory copy of the pioavail registers.
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* There are 2 bits for each buffer.
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*/
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__u64 spi_pioavailaddr;
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/*
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* Address where driver updates a copy of the interface and driver
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* status (IPATH_STATUS_*) as a 64 bit value. It's followed by a
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* string indicating hardware error, if there was one.
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*/
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__u64 spi_status;
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/* number of chip ports available to user processes */
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__u32 spi_nports;
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/* unit number of chip we are using */
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__u32 spi_unit;
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/* num bufs in each contiguous set */
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__u32 spi_rcv_egrperchunk;
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/* size in bytes of each contiguous set */
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__u32 spi_rcv_egrchunksize;
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/* total size of mmap to cover full rcvegrbuffers */
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__u32 spi_rcv_egrbuftotlen;
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} __attribute__ ((aligned(8)));
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/*
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* This version number is given to the driver by the user code during
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* initialization in the spu_userversion field of ipath_user_info, so
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* the driver can check for compatibility with user code.
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*
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* The major version changes when data structures
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* change in an incompatible way. The driver must be the same or higher
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* for initialization to succeed. In some cases, a higher version
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* driver will not interoperate with older software, and initialization
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* will return an error.
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*/
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#define IPATH_USER_SWMAJOR 1
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/*
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* Minor version differences are always compatible
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* a within a major version, however if if user software is larger
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* than driver software, some new features and/or structure fields
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* may not be implemented; the user code must deal with this if it
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* cares, or it must abort after initialization reports the difference
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*/
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#define IPATH_USER_SWMINOR 2
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#define IPATH_USER_SWVERSION ((IPATH_USER_SWMAJOR<<16) | IPATH_USER_SWMINOR)
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#define IPATH_KERN_TYPE 0
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/*
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* Similarly, this is the kernel version going back to the user. It's
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* slightly different, in that we want to tell if the driver was built as
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* part of a PathScale release, or from the driver from OpenIB, kernel.org,
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* or a standard distribution, for support reasons. The high bit is 0 for
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* non-PathScale, and 1 for PathScale-built/supplied.
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*
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* It's returned by the driver to the user code during initialization in the
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* spi_sw_version field of ipath_base_info, so the user code can in turn
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* check for compatibility with the kernel.
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*/
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#define IPATH_KERN_SWVERSION ((IPATH_KERN_TYPE<<31) | IPATH_USER_SWVERSION)
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/*
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* This structure is passed to ipath_userinit() to tell the driver where
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* user code buffers are, sizes, etc. The offsets and sizes of the
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* fields must remain unchanged, for binary compatibility. It can
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* be extended, if userversion is changed so user code can tell, if needed
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*/
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struct ipath_user_info {
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/*
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* version of user software, to detect compatibility issues.
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* Should be set to IPATH_USER_SWVERSION.
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*/
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__u32 spu_userversion;
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/* desired number of receive header queue entries */
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__u32 spu_rcvhdrcnt;
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/* size of struct base_info to write to */
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__u32 spu_base_info_size;
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/*
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* number of words in KD protocol header
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* This tells InfiniPath how many words to copy to rcvhdrq. If 0,
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* kernel uses a default. Once set, attempts to set any other value
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* are an error (EAGAIN) until driver is reloaded.
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*/
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__u32 spu_rcvhdrsize;
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/*
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* cache line aligned (64 byte) user address to
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* which the rcvhdrtail register will be written by infinipath
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* whenever it changes, so that no chip registers are read in
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* the performance path.
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*/
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__u64 spu_rcvhdraddr;
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/*
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* address of struct base_info to write to
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*/
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__u64 spu_base_info;
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} __attribute__ ((aligned(8)));
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/* User commands. */
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#define IPATH_CMD_MIN 16
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#define IPATH_CMD_USER_INIT 16 /* set up userspace */
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#define IPATH_CMD_PORT_INFO 17 /* find out what resources we got */
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#define IPATH_CMD_RECV_CTRL 18 /* control receipt of packets */
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#define IPATH_CMD_TID_UPDATE 19 /* update expected TID entries */
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#define IPATH_CMD_TID_FREE 20 /* free expected TID entries */
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#define IPATH_CMD_SET_PART_KEY 21 /* add partition key */
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#define IPATH_CMD_MAX 21
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struct ipath_port_info {
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__u32 num_active; /* number of active units */
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__u32 unit; /* unit (chip) assigned to caller */
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__u32 port; /* port on unit assigned to caller */
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};
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struct ipath_tid_info {
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__u32 tidcnt;
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/* make structure same size in 32 and 64 bit */
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__u32 tid__unused;
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/* virtual address of first page in transfer */
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__u64 tidvaddr;
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/* pointer (same size 32/64 bit) to __u16 tid array */
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__u64 tidlist;
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/*
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* pointer (same size 32/64 bit) to bitmap of TIDs used
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* for this call; checked for being large enough at open
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*/
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__u64 tidmap;
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};
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struct ipath_cmd {
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__u32 type; /* command type */
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union {
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struct ipath_tid_info tid_info;
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struct ipath_user_info user_info;
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/* address in userspace of struct ipath_port_info to
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write result to */
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__u64 port_info;
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/* enable/disable receipt of packets */
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__u32 recv_ctrl;
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/* partition key to set */
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__u16 part_key;
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} cmd;
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};
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struct ipath_iovec {
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/* Pointer to data, but same size 32 and 64 bit */
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__u64 iov_base;
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/*
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* Length of data; don't need 64 bits, but want
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* ipath_sendpkt to remain same size as before 32 bit changes, so...
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*/
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__u64 iov_len;
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};
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/*
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* Describes a single packet for send. Each packet can have one or more
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* buffers, but the total length (exclusive of IB headers) must be less
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* than the MTU, and if using the PIO method, entire packet length,
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* including IB headers, must be less than the ipath_piosize value (words).
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* Use of this necessitates including sys/uio.h
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*/
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struct __ipath_sendpkt {
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__u32 sps_flags; /* flags for packet (TBD) */
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__u32 sps_cnt; /* number of entries to use in sps_iov */
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/* array of iov's describing packet. TEMPORARY */
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struct ipath_iovec sps_iov[4];
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};
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/* Passed into SMA special file's ->read and ->write methods. */
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struct ipath_sma_pkt
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{
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__u32 unit; /* unit on which to send packet */
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__u64 data; /* address of payload in userspace */
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__u32 len; /* length of payload */
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};
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/*
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* Data layout in I2C flash (for GUID, etc.)
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* All fields are little-endian binary unless otherwise stated
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*/
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#define IPATH_FLASH_VERSION 1
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struct ipath_flash {
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/* flash layout version (IPATH_FLASH_VERSION) */
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__u8 if_fversion;
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/* checksum protecting if_length bytes */
|
|
__u8 if_csum;
|
|
/*
|
|
* valid length (in use, protected by if_csum), including
|
|
* if_fversion and if_sum themselves)
|
|
*/
|
|
__u8 if_length;
|
|
/* the GUID, in network order */
|
|
__u8 if_guid[8];
|
|
/* number of GUIDs to use, starting from if_guid */
|
|
__u8 if_numguid;
|
|
/* the board serial number, in ASCII */
|
|
char if_serial[12];
|
|
/* board mfg date (YYYYMMDD ASCII) */
|
|
char if_mfgdate[8];
|
|
/* last board rework/test date (YYYYMMDD ASCII) */
|
|
char if_testdate[8];
|
|
/* logging of error counts, TBD */
|
|
__u8 if_errcntp[4];
|
|
/* powered on hours, updated at driver unload */
|
|
__u8 if_powerhour[2];
|
|
/* ASCII free-form comment field */
|
|
char if_comment[32];
|
|
/* 78 bytes used, min flash size is 128 bytes */
|
|
__u8 if_future[50];
|
|
};
|
|
|
|
/*
|
|
* These are the counters implemented in the chip, and are listed in order.
|
|
* The InterCaps naming is taken straight from the chip spec.
|
|
*/
|
|
struct infinipath_counters {
|
|
__u64 LBIntCnt;
|
|
__u64 LBFlowStallCnt;
|
|
__u64 Reserved1;
|
|
__u64 TxUnsupVLErrCnt;
|
|
__u64 TxDataPktCnt;
|
|
__u64 TxFlowPktCnt;
|
|
__u64 TxDwordCnt;
|
|
__u64 TxLenErrCnt;
|
|
__u64 TxMaxMinLenErrCnt;
|
|
__u64 TxUnderrunCnt;
|
|
__u64 TxFlowStallCnt;
|
|
__u64 TxDroppedPktCnt;
|
|
__u64 RxDroppedPktCnt;
|
|
__u64 RxDataPktCnt;
|
|
__u64 RxFlowPktCnt;
|
|
__u64 RxDwordCnt;
|
|
__u64 RxLenErrCnt;
|
|
__u64 RxMaxMinLenErrCnt;
|
|
__u64 RxICRCErrCnt;
|
|
__u64 RxVCRCErrCnt;
|
|
__u64 RxFlowCtrlErrCnt;
|
|
__u64 RxBadFormatCnt;
|
|
__u64 RxLinkProblemCnt;
|
|
__u64 RxEBPCnt;
|
|
__u64 RxLPCRCErrCnt;
|
|
__u64 RxBufOvflCnt;
|
|
__u64 RxTIDFullErrCnt;
|
|
__u64 RxTIDValidErrCnt;
|
|
__u64 RxPKeyMismatchCnt;
|
|
__u64 RxP0HdrEgrOvflCnt;
|
|
__u64 RxP1HdrEgrOvflCnt;
|
|
__u64 RxP2HdrEgrOvflCnt;
|
|
__u64 RxP3HdrEgrOvflCnt;
|
|
__u64 RxP4HdrEgrOvflCnt;
|
|
__u64 RxP5HdrEgrOvflCnt;
|
|
__u64 RxP6HdrEgrOvflCnt;
|
|
__u64 RxP7HdrEgrOvflCnt;
|
|
__u64 RxP8HdrEgrOvflCnt;
|
|
__u64 Reserved6;
|
|
__u64 Reserved7;
|
|
__u64 IBStatusChangeCnt;
|
|
__u64 IBLinkErrRecoveryCnt;
|
|
__u64 IBLinkDownedCnt;
|
|
__u64 IBSymbolErrCnt;
|
|
};
|
|
|
|
/*
|
|
* The next set of defines are for packet headers, and chip register
|
|
* and memory bits that are visible to and/or used by user-mode software
|
|
* The other bits that are used only by the driver or diags are in
|
|
* ipath_registers.h
|
|
*/
|
|
|
|
/* RcvHdrFlags bits */
|
|
#define INFINIPATH_RHF_LENGTH_MASK 0x7FF
|
|
#define INFINIPATH_RHF_LENGTH_SHIFT 0
|
|
#define INFINIPATH_RHF_RCVTYPE_MASK 0x7
|
|
#define INFINIPATH_RHF_RCVTYPE_SHIFT 11
|
|
#define INFINIPATH_RHF_EGRINDEX_MASK 0x7FF
|
|
#define INFINIPATH_RHF_EGRINDEX_SHIFT 16
|
|
#define INFINIPATH_RHF_H_ICRCERR 0x80000000
|
|
#define INFINIPATH_RHF_H_VCRCERR 0x40000000
|
|
#define INFINIPATH_RHF_H_PARITYERR 0x20000000
|
|
#define INFINIPATH_RHF_H_LENERR 0x10000000
|
|
#define INFINIPATH_RHF_H_MTUERR 0x08000000
|
|
#define INFINIPATH_RHF_H_IHDRERR 0x04000000
|
|
#define INFINIPATH_RHF_H_TIDERR 0x02000000
|
|
#define INFINIPATH_RHF_H_MKERR 0x01000000
|
|
#define INFINIPATH_RHF_H_IBERR 0x00800000
|
|
#define INFINIPATH_RHF_L_SWA 0x00008000
|
|
#define INFINIPATH_RHF_L_SWB 0x00004000
|
|
|
|
/* infinipath header fields */
|
|
#define INFINIPATH_I_VERS_MASK 0xF
|
|
#define INFINIPATH_I_VERS_SHIFT 28
|
|
#define INFINIPATH_I_PORT_MASK 0xF
|
|
#define INFINIPATH_I_PORT_SHIFT 24
|
|
#define INFINIPATH_I_TID_MASK 0x7FF
|
|
#define INFINIPATH_I_TID_SHIFT 13
|
|
#define INFINIPATH_I_OFFSET_MASK 0x1FFF
|
|
#define INFINIPATH_I_OFFSET_SHIFT 0
|
|
|
|
/* K_PktFlags bits */
|
|
#define INFINIPATH_KPF_INTR 0x1
|
|
|
|
/* SendPIO per-buffer control */
|
|
#define INFINIPATH_SP_LENGTHP1_MASK 0x3FF
|
|
#define INFINIPATH_SP_LENGTHP1_SHIFT 0
|
|
#define INFINIPATH_SP_INTR 0x80000000
|
|
#define INFINIPATH_SP_TEST 0x40000000
|
|
#define INFINIPATH_SP_TESTEBP 0x20000000
|
|
|
|
/* SendPIOAvail bits */
|
|
#define INFINIPATH_SENDPIOAVAIL_BUSY_SHIFT 1
|
|
#define INFINIPATH_SENDPIOAVAIL_CHECK_SHIFT 0
|
|
|
|
#endif /* _IPATH_COMMON_H */
|