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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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78958433db
Enable Snoop from Primary to Secondary side on BAR23 and BAR45 on all TLPs. Previously, Snoop was only enabled from Secondary to Primary side. This can have a performance improvement on some workloads. Also, make the code more obvious about how the link is being enabled. Signed-off-by: Jon Mason <jon.mason@intel.com>
160 lines
5.6 KiB
C
160 lines
5.6 KiB
C
/*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2012 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* BSD LICENSE
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*
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* Copyright(c) 2012 Intel Corporation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copy
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Intel PCIe NTB Linux driver
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*
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* Contact Information:
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* Jon Mason <jon.mason@intel.com>
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*/
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#define NTB_LINK_STATUS_ACTIVE 0x2000
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#define NTB_LINK_SPEED_MASK 0x000f
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#define NTB_LINK_WIDTH_MASK 0x03f0
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#define SNB_MSIX_CNT 4
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#define SNB_MAX_B2B_SPADS 16
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#define SNB_MAX_COMPAT_SPADS 16
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/* Reserve the uppermost bit for link interrupt */
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#define SNB_MAX_DB_BITS 15
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#define SNB_LINK_DB 15
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#define SNB_DB_BITS_PER_VEC 5
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#define SNB_MAX_MW 2
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#define SNB_ERRATA_MAX_MW 1
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#define SNB_DB_HW_LINK 0x8000
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#define SNB_PCICMD_OFFSET 0x0504
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#define SNB_DEVCTRL_OFFSET 0x0598
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#define SNB_SLINK_STATUS_OFFSET 0x05A2
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#define SNB_LINK_STATUS_OFFSET 0x01A2
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#define SNB_PBAR2LMT_OFFSET 0x0000
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#define SNB_PBAR4LMT_OFFSET 0x0008
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#define SNB_PBAR2XLAT_OFFSET 0x0010
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#define SNB_PBAR4XLAT_OFFSET 0x0018
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#define SNB_SBAR2LMT_OFFSET 0x0020
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#define SNB_SBAR4LMT_OFFSET 0x0028
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#define SNB_SBAR2XLAT_OFFSET 0x0030
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#define SNB_SBAR4XLAT_OFFSET 0x0038
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#define SNB_SBAR0BASE_OFFSET 0x0040
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#define SNB_SBAR2BASE_OFFSET 0x0048
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#define SNB_SBAR4BASE_OFFSET 0x0050
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#define SNB_NTBCNTL_OFFSET 0x0058
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#define SNB_SBDF_OFFSET 0x005C
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#define SNB_PDOORBELL_OFFSET 0x0060
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#define SNB_PDBMSK_OFFSET 0x0062
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#define SNB_SDOORBELL_OFFSET 0x0064
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#define SNB_SDBMSK_OFFSET 0x0066
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#define SNB_USMEMMISS 0x0070
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#define SNB_SPAD_OFFSET 0x0080
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#define SNB_SPADSEMA4_OFFSET 0x00c0
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#define SNB_WCCNTRL_OFFSET 0x00e0
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#define SNB_B2B_SPAD_OFFSET 0x0100
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#define SNB_B2B_DOORBELL_OFFSET 0x0140
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#define SNB_B2B_XLAT_OFFSETL 0x0144
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#define SNB_B2B_XLAT_OFFSETU 0x0148
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#define SNB_MBAR01_USD_ADDR 0x000000210000000CULL
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#define SNB_MBAR23_USD_ADDR 0x000000410000000CULL
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#define SNB_MBAR45_USD_ADDR 0x000000810000000CULL
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#define SNB_MBAR01_DSD_ADDR 0x000000200000000CULL
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#define SNB_MBAR23_DSD_ADDR 0x000000400000000CULL
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#define SNB_MBAR45_DSD_ADDR 0x000000800000000CULL
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#define BWD_MSIX_CNT 34
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#define BWD_MAX_SPADS 16
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#define BWD_MAX_DB_BITS 34
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#define BWD_DB_BITS_PER_VEC 1
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#define BWD_MAX_MW 2
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#define BWD_PCICMD_OFFSET 0xb004
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#define BWD_MBAR23_OFFSET 0xb018
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#define BWD_MBAR45_OFFSET 0xb020
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#define BWD_DEVCTRL_OFFSET 0xb048
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#define BWD_LINK_STATUS_OFFSET 0xb052
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#define BWD_ERRCORSTS_OFFSET 0xb110
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#define BWD_SBAR2XLAT_OFFSET 0x0008
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#define BWD_SBAR4XLAT_OFFSET 0x0010
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#define BWD_PDOORBELL_OFFSET 0x0020
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#define BWD_PDBMSK_OFFSET 0x0028
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#define BWD_NTBCNTL_OFFSET 0x0060
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#define BWD_EBDF_OFFSET 0x0064
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#define BWD_SPAD_OFFSET 0x0080
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#define BWD_SPADSEMA_OFFSET 0x00c0
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#define BWD_STKYSPAD_OFFSET 0x00c4
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#define BWD_PBAR2XLAT_OFFSET 0x8008
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#define BWD_PBAR4XLAT_OFFSET 0x8010
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#define BWD_B2B_DOORBELL_OFFSET 0x8020
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#define BWD_B2B_SPAD_OFFSET 0x8080
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#define BWD_B2B_SPADSEMA_OFFSET 0x80c0
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#define BWD_B2B_STKYSPAD_OFFSET 0x80c4
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#define BWD_MODPHY_PCSREG4 0x1c004
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#define BWD_MODPHY_PCSREG6 0x1c006
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#define BWD_IP_BASE 0xC000
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#define BWD_DESKEWSTS_OFFSET (BWD_IP_BASE + 0x3024)
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#define BWD_LTSSMERRSTS0_OFFSET (BWD_IP_BASE + 0x3180)
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#define BWD_LTSSMSTATEJMP_OFFSET (BWD_IP_BASE + 0x3040)
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#define BWD_IBSTERRRCRVSTS0_OFFSET (BWD_IP_BASE + 0x3324)
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#define BWD_DESKEWSTS_DBERR (1 << 15)
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#define BWD_LTSSMERRSTS0_UNEXPECTEDEI (1 << 20)
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#define BWD_LTSSMSTATEJMP_FORCEDETECT (1 << 2)
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#define BWD_IBIST_ERR_OFLOW 0x7FFF7FFF
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#define NTB_CNTL_CFG_LOCK (1 << 0)
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#define NTB_CNTL_LINK_DISABLE (1 << 1)
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#define NTB_CNTL_S2P_BAR23_SNOOP (1 << 2)
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#define NTB_CNTL_P2S_BAR23_SNOOP (1 << 4)
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#define NTB_CNTL_S2P_BAR45_SNOOP (1 << 6)
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#define NTB_CNTL_P2S_BAR45_SNOOP (1 << 8)
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#define BWD_CNTL_LINK_DOWN (1 << 16)
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#define NTB_PPD_OFFSET 0x00D4
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#define SNB_PPD_CONN_TYPE 0x0003
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#define SNB_PPD_DEV_TYPE 0x0010
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#define BWD_PPD_INIT_LINK 0x0008
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#define BWD_PPD_CONN_TYPE 0x0300
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#define BWD_PPD_DEV_TYPE 0x1000
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