/* * This file is provided under a dual BSD/GPLv2 license. When using or * redistributing this file, you may do so under either license. * * GPL LICENSE SUMMARY * * Copyright(c) 2012 Intel Corporation. All rights reserved. * Copyright (C) 2015 EMC Corporation. All Rights Reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * BSD LICENSE * * Copyright(c) 2012 Intel Corporation. All rights reserved. * Copyright (C) 2015 EMC 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: * * * 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 copy * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * Neither the name of Intel Corporation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT * OWNER 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. * * Intel PCIe NTB Linux driver * * Contact Information: * Jon Mason */ #ifndef NTB_HW_INTEL_H #define NTB_HW_INTEL_H #include #include #define PCI_DEVICE_ID_INTEL_NTB_B2B_JSF 0x3725 #define PCI_DEVICE_ID_INTEL_NTB_PS_JSF 0x3726 #define PCI_DEVICE_ID_INTEL_NTB_SS_JSF 0x3727 #define PCI_DEVICE_ID_INTEL_NTB_B2B_SNB 0x3C0D #define PCI_DEVICE_ID_INTEL_NTB_PS_SNB 0x3C0E #define PCI_DEVICE_ID_INTEL_NTB_SS_SNB 0x3C0F #define PCI_DEVICE_ID_INTEL_NTB_B2B_IVT 0x0E0D #define PCI_DEVICE_ID_INTEL_NTB_PS_IVT 0x0E0E #define PCI_DEVICE_ID_INTEL_NTB_SS_IVT 0x0E0F #define PCI_DEVICE_ID_INTEL_NTB_B2B_HSX 0x2F0D #define PCI_DEVICE_ID_INTEL_NTB_PS_HSX 0x2F0E #define PCI_DEVICE_ID_INTEL_NTB_SS_HSX 0x2F0F #define PCI_DEVICE_ID_INTEL_NTB_B2B_BWD 0x0C4E /* SNB hardware (and JSF, IVT, HSX) */ #define SNB_PBAR23LMT_OFFSET 0x0000 #define SNB_PBAR45LMT_OFFSET 0x0008 #define SNB_PBAR4LMT_OFFSET 0x0008 #define SNB_PBAR5LMT_OFFSET 0x000c #define SNB_PBAR23XLAT_OFFSET 0x0010 #define SNB_PBAR45XLAT_OFFSET 0x0018 #define SNB_PBAR4XLAT_OFFSET 0x0018 #define SNB_PBAR5XLAT_OFFSET 0x001c #define SNB_SBAR23LMT_OFFSET 0x0020 #define SNB_SBAR45LMT_OFFSET 0x0028 #define SNB_SBAR4LMT_OFFSET 0x0028 #define SNB_SBAR5LMT_OFFSET 0x002c #define SNB_SBAR23XLAT_OFFSET 0x0030 #define SNB_SBAR45XLAT_OFFSET 0x0038 #define SNB_SBAR4XLAT_OFFSET 0x0038 #define SNB_SBAR5XLAT_OFFSET 0x003c #define SNB_SBAR0BASE_OFFSET 0x0040 #define SNB_SBAR23BASE_OFFSET 0x0048 #define SNB_SBAR45BASE_OFFSET 0x0050 #define SNB_SBAR4BASE_OFFSET 0x0050 #define SNB_SBAR5BASE_OFFSET 0x0054 #define SNB_SBDF_OFFSET 0x005c #define SNB_NTBCNTL_OFFSET 0x0058 #define SNB_PDOORBELL_OFFSET 0x0060 #define SNB_PDBMSK_OFFSET 0x0062 #define SNB_SDOORBELL_OFFSET 0x0064 #define SNB_SDBMSK_OFFSET 0x0066 #define SNB_USMEMMISS_OFFSET 0x0070 #define SNB_SPAD_OFFSET 0x0080 #define SNB_PBAR23SZ_OFFSET 0x00d0 #define SNB_PBAR45SZ_OFFSET 0x00d1 #define SNB_PBAR4SZ_OFFSET 0x00d1 #define SNB_SBAR23SZ_OFFSET 0x00d2 #define SNB_SBAR45SZ_OFFSET 0x00d3 #define SNB_SBAR4SZ_OFFSET 0x00d3 #define SNB_PPD_OFFSET 0x00d4 #define SNB_PBAR5SZ_OFFSET 0x00d5 #define SNB_SBAR5SZ_OFFSET 0x00d6 #define SNB_WCCNTRL_OFFSET 0x00e0 #define SNB_UNCERRSTS_OFFSET 0x014c #define SNB_CORERRSTS_OFFSET 0x0158 #define SNB_LINK_STATUS_OFFSET 0x01a2 #define SNB_SPCICMD_OFFSET 0x0504 #define SNB_DEVCTRL_OFFSET 0x0598 #define SNB_DEVSTS_OFFSET 0x059a #define SNB_SLINK_STATUS_OFFSET 0x05a2 #define SNB_B2B_SPAD_OFFSET 0x0100 #define SNB_B2B_DOORBELL_OFFSET 0x0140 #define SNB_B2B_XLAT_OFFSETL 0x0144 #define SNB_B2B_XLAT_OFFSETU 0x0148 #define SNB_PPD_CONN_MASK 0x03 #define SNB_PPD_CONN_TRANSPARENT 0x00 #define SNB_PPD_CONN_B2B 0x01 #define SNB_PPD_CONN_RP 0x02 #define SNB_PPD_DEV_MASK 0x10 #define SNB_PPD_DEV_USD 0x00 #define SNB_PPD_DEV_DSD 0x10 #define SNB_PPD_SPLIT_BAR_MASK 0x40 #define SNB_PPD_TOPO_MASK (SNB_PPD_CONN_MASK | SNB_PPD_DEV_MASK) #define SNB_PPD_TOPO_PRI_USD (SNB_PPD_CONN_RP | SNB_PPD_DEV_USD) #define SNB_PPD_TOPO_PRI_DSD (SNB_PPD_CONN_RP | SNB_PPD_DEV_DSD) #define SNB_PPD_TOPO_SEC_USD (SNB_PPD_CONN_TRANSPARENT | SNB_PPD_DEV_USD) #define SNB_PPD_TOPO_SEC_DSD (SNB_PPD_CONN_TRANSPARENT | SNB_PPD_DEV_DSD) #define SNB_PPD_TOPO_B2B_USD (SNB_PPD_CONN_B2B | SNB_PPD_DEV_USD) #define SNB_PPD_TOPO_B2B_DSD (SNB_PPD_CONN_B2B | SNB_PPD_DEV_DSD) #define SNB_MW_COUNT 2 #define HSX_SPLIT_BAR_MW_COUNT 3 #define SNB_DB_COUNT 15 #define SNB_DB_LINK 15 #define SNB_DB_LINK_BIT BIT_ULL(SNB_DB_LINK) #define SNB_DB_MSIX_VECTOR_COUNT 4 #define SNB_DB_MSIX_VECTOR_SHIFT 5 #define SNB_DB_TOTAL_SHIFT 16 #define SNB_SPAD_COUNT 16 /* BWD hardware */ #define BWD_SBAR2XLAT_OFFSET 0x0008 #define BWD_PDOORBELL_OFFSET 0x0020 #define BWD_PDBMSK_OFFSET 0x0028 #define BWD_NTBCNTL_OFFSET 0x0060 #define BWD_SPAD_OFFSET 0x0080 #define BWD_PPD_OFFSET 0x00d4 #define BWD_PBAR2XLAT_OFFSET 0x8008 #define BWD_B2B_DOORBELL_OFFSET 0x8020 #define BWD_B2B_SPAD_OFFSET 0x8080 #define BWD_SPCICMD_OFFSET 0xb004 #define BWD_LINK_STATUS_OFFSET 0xb052 #define BWD_ERRCORSTS_OFFSET 0xb110 #define BWD_IP_BASE 0xc000 #define BWD_DESKEWSTS_OFFSET (BWD_IP_BASE + 0x3024) #define BWD_LTSSMERRSTS0_OFFSET (BWD_IP_BASE + 0x3180) #define BWD_LTSSMSTATEJMP_OFFSET (BWD_IP_BASE + 0x3040) #define BWD_IBSTERRRCRVSTS0_OFFSET (BWD_IP_BASE + 0x3324) #define BWD_MODPHY_PCSREG4 0x1c004 #define BWD_MODPHY_PCSREG6 0x1c006 #define BWD_PPD_INIT_LINK 0x0008 #define BWD_PPD_CONN_MASK 0x0300 #define BWD_PPD_CONN_TRANSPARENT 0x0000 #define BWD_PPD_CONN_B2B 0x0100 #define BWD_PPD_CONN_RP 0x0200 #define BWD_PPD_DEV_MASK 0x1000 #define BWD_PPD_DEV_USD 0x0000 #define BWD_PPD_DEV_DSD 0x1000 #define BWD_PPD_TOPO_MASK (BWD_PPD_CONN_MASK | BWD_PPD_DEV_MASK) #define BWD_PPD_TOPO_PRI_USD (BWD_PPD_CONN_TRANSPARENT | BWD_PPD_DEV_USD) #define BWD_PPD_TOPO_PRI_DSD (BWD_PPD_CONN_TRANSPARENT | BWD_PPD_DEV_DSD) #define BWD_PPD_TOPO_SEC_USD (BWD_PPD_CONN_RP | BWD_PPD_DEV_USD) #define BWD_PPD_TOPO_SEC_DSD (BWD_PPD_CONN_RP | BWD_PPD_DEV_DSD) #define BWD_PPD_TOPO_B2B_USD (BWD_PPD_CONN_B2B | BWD_PPD_DEV_USD) #define BWD_PPD_TOPO_B2B_DSD (BWD_PPD_CONN_B2B | BWD_PPD_DEV_DSD) #define BWD_MW_COUNT 2 #define BWD_DB_COUNT 34 #define BWD_DB_VALID_MASK (BIT_ULL(BWD_DB_COUNT) - 1) #define BWD_DB_MSIX_VECTOR_COUNT 34 #define BWD_DB_MSIX_VECTOR_SHIFT 1 #define BWD_DB_TOTAL_SHIFT 34 #define BWD_SPAD_COUNT 16 #define BWD_NTB_CTL_DOWN_BIT BIT(16) #define BWD_NTB_CTL_ACTIVE(x) !(x & BWD_NTB_CTL_DOWN_BIT) #define BWD_DESKEWSTS_DBERR BIT(15) #define BWD_LTSSMERRSTS0_UNEXPECTEDEI BIT(20) #define BWD_LTSSMSTATEJMP_FORCEDETECT BIT(2) #define BWD_IBIST_ERR_OFLOW 0x7FFF7FFF #define BWD_LINK_HB_TIMEOUT msecs_to_jiffies(1000) #define BWD_LINK_RECOVERY_TIME msecs_to_jiffies(500) /* Ntb control and link status */ #define NTB_CTL_CFG_LOCK BIT(0) #define NTB_CTL_DISABLE BIT(1) #define NTB_CTL_S2P_BAR2_SNOOP BIT(2) #define NTB_CTL_P2S_BAR2_SNOOP BIT(4) #define NTB_CTL_S2P_BAR4_SNOOP BIT(6) #define NTB_CTL_P2S_BAR4_SNOOP BIT(8) #define NTB_CTL_S2P_BAR5_SNOOP BIT(12) #define NTB_CTL_P2S_BAR5_SNOOP BIT(14) #define NTB_LNK_STA_ACTIVE_BIT 0x2000 #define NTB_LNK_STA_SPEED_MASK 0x000f #define NTB_LNK_STA_WIDTH_MASK 0x03f0 #define NTB_LNK_STA_ACTIVE(x) (!!((x) & NTB_LNK_STA_ACTIVE_BIT)) #define NTB_LNK_STA_SPEED(x) ((x) & NTB_LNK_STA_SPEED_MASK) #define NTB_LNK_STA_WIDTH(x) (((x) & NTB_LNK_STA_WIDTH_MASK) >> 4) /* Use the following addresses for translation between b2b ntb devices in case * the hardware default values are not reliable. */ #define SNB_B2B_BAR0_USD_ADDR 0x1000000000000000ull #define SNB_B2B_BAR2_USD_ADDR64 0x2000000000000000ull #define SNB_B2B_BAR4_USD_ADDR64 0x4000000000000000ull #define SNB_B2B_BAR4_USD_ADDR32 0x20000000u #define SNB_B2B_BAR5_USD_ADDR32 0x40000000u #define SNB_B2B_BAR0_DSD_ADDR 0x9000000000000000ull #define SNB_B2B_BAR2_DSD_ADDR64 0xa000000000000000ull #define SNB_B2B_BAR4_DSD_ADDR64 0xc000000000000000ull #define SNB_B2B_BAR4_DSD_ADDR32 0xa0000000u #define SNB_B2B_BAR5_DSD_ADDR32 0xc0000000u /* The peer ntb secondary config space is 32KB fixed size */ #define SNB_B2B_MIN_SIZE 0x8000 /* flags to indicate hardware errata */ #define NTB_HWERR_SDOORBELL_LOCKUP BIT_ULL(0) #define NTB_HWERR_SB01BASE_LOCKUP BIT_ULL(1) #define NTB_HWERR_B2BDOORBELL_BIT14 BIT_ULL(2) /* flags to indicate unsafe api */ #define NTB_UNSAFE_DB BIT_ULL(0) #define NTB_UNSAFE_SPAD BIT_ULL(1) struct intel_ntb_dev; struct intel_ntb_reg { int (*poll_link)(struct intel_ntb_dev *ndev); int (*link_is_up)(struct intel_ntb_dev *ndev); u64 (*db_ioread)(void __iomem *mmio); void (*db_iowrite)(u64 db_bits, void __iomem *mmio); unsigned long ntb_ctl; resource_size_t db_size; int mw_bar[]; }; struct intel_ntb_alt_reg { unsigned long db_bell; unsigned long db_mask; unsigned long spad; }; struct intel_ntb_xlat_reg { unsigned long bar0_base; unsigned long bar2_xlat; unsigned long bar2_limit; }; struct intel_b2b_addr { phys_addr_t bar0_addr; phys_addr_t bar2_addr64; phys_addr_t bar4_addr64; phys_addr_t bar4_addr32; phys_addr_t bar5_addr32; }; struct intel_ntb_vec { struct intel_ntb_dev *ndev; int num; }; struct intel_ntb_dev { struct ntb_dev ntb; /* offset of peer bar0 in b2b bar */ unsigned long b2b_off; /* mw idx used to access peer bar0 */ unsigned int b2b_idx; /* BAR45 is split into BAR4 and BAR5 */ bool bar4_split; u32 ntb_ctl; u32 lnk_sta; unsigned char mw_count; unsigned char spad_count; unsigned char db_count; unsigned char db_vec_count; unsigned char db_vec_shift; u64 db_valid_mask; u64 db_link_mask; u64 db_mask; /* synchronize rmw access of db_mask and hw reg */ spinlock_t db_mask_lock; struct msix_entry *msix; struct intel_ntb_vec *vec; const struct intel_ntb_reg *reg; const struct intel_ntb_alt_reg *self_reg; const struct intel_ntb_alt_reg *peer_reg; const struct intel_ntb_xlat_reg *xlat_reg; void __iomem *self_mmio; void __iomem *peer_mmio; phys_addr_t peer_addr; unsigned long last_ts; struct delayed_work hb_timer; unsigned long hwerr_flags; unsigned long unsafe_flags; unsigned long unsafe_flags_ignore; struct dentry *debugfs_dir; struct dentry *debugfs_info; }; #define ndev_pdev(ndev) ((ndev)->ntb.pdev) #define ndev_name(ndev) pci_name(ndev_pdev(ndev)) #define ndev_dev(ndev) (&ndev_pdev(ndev)->dev) #define ntb_ndev(ntb) container_of(ntb, struct intel_ntb_dev, ntb) #define hb_ndev(work) container_of(work, struct intel_ntb_dev, hb_timer.work) #endif