e974f91c38
I/OAT is also referred to as Crystal Beach DMA and is a Platform Storage Extension (PSE) on some Intel server platforms. This driver currently supports DMA descriptors only and is part of a larger effort to upstream an interconnect between multiple systems using the Non-Transparent Bridge (NTB) PSE. For now, this driver is only built on AMD64 platforms. It may be ported to work on i386 later, if that is desired. The hardware is exclusive to x86. Further documentation on ioat(4), including API documentation and usage, can be found in the new manual page. Bring in a test tool, ioatcontrol(8), in tools/tools/ioat. The test tool is not hooked up to the build and is not intended for end users. Submitted by: jimharris, Carl Delsey <carl.r.delsey@intel.com> Reviewed by: jimharris (reviewed my changes) Approved by: markj (mentor) Relnotes: yes Sponsored by: Intel Sponsored by: EMC / Isilon Storage Division Differential Revision: https://reviews.freebsd.org/D3456
105 lines
3.3 KiB
C
105 lines
3.3 KiB
C
/*-
|
|
* Copyright (C) 2012 Intel Corporation
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#ifndef __IOAT_HW_H__
|
|
#define __IOAT_HW_H__
|
|
|
|
#define IOAT_MAX_CHANNELS 32
|
|
|
|
#define IOAT_CHANCNT_OFFSET 0x00
|
|
|
|
#define IOAT_XFERCAP_OFFSET 0x01
|
|
|
|
#define IOAT_GENCTRL_OFFSET 0x02
|
|
|
|
#define IOAT_INTRCTRL_OFFSET 0x03
|
|
#define IOAT_INTRCTRL_MASTER_INT_EN 0x01
|
|
|
|
#define IOAT_ATTNSTATUS_OFFSET 0x04
|
|
|
|
#define IOAT_CBVER_OFFSET 0x08
|
|
|
|
#define IOAT_VER_3_0 0x30
|
|
#define IOAT_VER_3_3 0x33
|
|
|
|
#define IOAT_INTRDELAY_OFFSET 0x0C
|
|
|
|
#define IOAT_CS_STATUS_OFFSET 0x0E
|
|
|
|
#define IOAT_DMACAPABILITY_OFFSET 0x10
|
|
|
|
/* DMA Channel Registers */
|
|
#define IOAT_CHANCTRL_OFFSET 0x80
|
|
#define IOAT_CHANCTRL_CHANNEL_PRIORITY_MASK 0xF000
|
|
#define IOAT_CHANCTRL_COMPL_DCA_EN 0x0200
|
|
#define IOAT_CHANCTRL_CHANNEL_IN_USE 0x0100
|
|
#define IOAT_CHANCTRL_DESCRIPTOR_ADDR_SNOOP_CONTROL 0x0020
|
|
#define IOAT_CHANCTRL_ERR_INT_EN 0x0010
|
|
#define IOAT_CHANCTRL_ANY_ERR_ABORT_EN 0x0008
|
|
#define IOAT_CHANCTRL_ERR_COMPLETION_EN 0x0004
|
|
#define IOAT_CHANCTRL_INT_REARM 0x0001
|
|
#define IOAT_CHANCTRL_RUN (IOAT_CHANCTRL_INT_REARM |\
|
|
IOAT_CHANCTRL_ANY_ERR_ABORT_EN)
|
|
|
|
#define IOAT_CHANCMD_OFFSET 0x84
|
|
#define IOAT_CHANCMD_RESET 0x20
|
|
#define IOAT_CHANCMD_SUSPEND 0x04
|
|
|
|
#define IOAT_DMACOUNT_OFFSET 0x86
|
|
|
|
#define IOAT_CHANSTS_OFFSET_LOW 0x88
|
|
#define IOAT_CHANSTS_OFFSET_HIGH 0x8C
|
|
#define IOAT_CHANSTS_OFFSET 0x88
|
|
|
|
#define IOAT_CHANSTS_STATUS 0x7ULL
|
|
#define IOAT_CHANSTS_ACTIVE 0x0
|
|
#define IOAT_CHANSTS_IDLE 0x1
|
|
#define IOAT_CHANSTS_SUSPENDED 0x2
|
|
#define IOAT_CHANSTS_HALTED 0x3
|
|
|
|
#define IOAT_CHANSTS_UNAFFILIATED_ERROR 0x8ULL
|
|
#define IOAT_CHANSTS_SOFT_ERROR 0x10ULL
|
|
|
|
#define IOAT_CHANSTS_COMPLETED_DESCRIPTOR_MASK (~0x3FULL)
|
|
|
|
#define IOAT_CHAINADDR_OFFSET_LOW 0x90
|
|
#define IOAT_CHAINADDR_OFFSET_HIGH 0x94
|
|
|
|
#define IOAT_CHANCMP_OFFSET_LOW 0x98
|
|
#define IOAT_CHANCMP_OFFSET_HIGH 0x9C
|
|
|
|
#define IOAT_CHANERR_OFFSET 0xA8
|
|
|
|
#define IOAT_CFG_CHANERR_INT_OFFSET 0x180
|
|
#define IOAT_CFG_CHANERRMASK_INT_OFFSET 0x184
|
|
|
|
#define IOAT_MIN_ORDER 4
|
|
#define IOAT_MAX_ORDER 16
|
|
|
|
#endif /* __IOAT_HW_H__ */
|