summaryrefslogtreecommitdiffstats
path: root/drivers/ntb/hw/intel/ntb_hw_gen4.h
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/ntb/hw/intel/ntb_hw_gen4.h')
-rw-r--r--drivers/ntb/hw/intel/ntb_hw_gen4.h131
1 files changed, 131 insertions, 0 deletions
diff --git a/drivers/ntb/hw/intel/ntb_hw_gen4.h b/drivers/ntb/hw/intel/ntb_hw_gen4.h
new file mode 100644
index 000000000..f91323eaf
--- /dev/null
+++ b/drivers/ntb/hw/intel/ntb_hw_gen4.h
@@ -0,0 +1,131 @@
+/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
+/* Copyright(c) 2020 Intel Corporation. All rights reserved. */
+#ifndef _NTB_INTEL_GEN4_H_
+#define _NTB_INTEL_GEN4_H_
+
+#include "ntb_hw_intel.h"
+
+/* Supported PCI device revision range for ICX */
+#define PCI_DEVICE_REVISION_ICX_MIN 0x2
+#define PCI_DEVICE_REVISION_ICX_MAX 0xF
+
+/* Intel Gen4 NTB hardware */
+/* PCIe config space */
+#define GEN4_IMBAR23SZ_OFFSET 0x00c4
+#define GEN4_IMBAR45SZ_OFFSET 0x00c5
+#define GEN4_EMBAR23SZ_OFFSET 0x00c6
+#define GEN4_EMBAR45SZ_OFFSET 0x00c7
+#define GEN4_DEVCTRL_OFFSET 0x0048
+#define GEN4_DEVSTS_OFFSET 0x004a
+#define GEN4_UNCERRSTS_OFFSET 0x0104
+#define GEN4_CORERRSTS_OFFSET 0x0110
+
+/* BAR0 MMIO */
+#define GEN4_NTBCNTL_OFFSET 0x0000
+#define GEN4_IM23XBASE_OFFSET 0x0010 /* IMBAR1XBASE */
+#define GEN4_IM23XLMT_OFFSET 0x0018 /* IMBAR1XLMT */
+#define GEN4_IM45XBASE_OFFSET 0x0020 /* IMBAR2XBASE */
+#define GEN4_IM45XLMT_OFFSET 0x0028 /* IMBAR2XLMT */
+#define GEN4_IM_INT_STATUS_OFFSET 0x0040
+#define GEN4_IM_INT_DISABLE_OFFSET 0x0048
+#define GEN4_INTVEC_OFFSET 0x0050 /* 0-32 vecs */
+#define GEN4_IM23XBASEIDX_OFFSET 0x0074
+#define GEN4_IM45XBASEIDX_OFFSET 0x0076
+#define GEN4_IM_SPAD_OFFSET 0x0080 /* 0-15 SPADs */
+#define GEN4_IM_SPAD_SEM_OFFSET 0x00c0 /* SPAD hw semaphore */
+#define GEN4_IM_SPAD_STICKY_OFFSET 0x00c4 /* sticky SPAD */
+#define GEN4_IM_DOORBELL_OFFSET 0x0100 /* 0-31 doorbells */
+#define GEN4_LTR_SWSEL_OFFSET 0x30ec
+#define GEN4_LTR_ACTIVE_OFFSET 0x30f0
+#define GEN4_LTR_IDLE_OFFSET 0x30f4
+#define GEN4_EM_SPAD_OFFSET 0x8080
+/* note, link status is now in MMIO and not config space for NTB */
+#define GEN4_LINK_CTRL_OFFSET 0xb050
+#define GEN4_LINK_STATUS_OFFSET 0xb052
+#define GEN4_PPD0_OFFSET 0xb0d4
+#define GEN4_PPD1_OFFSET 0xb4c0
+#define GEN4_LTSSMSTATEJMP 0xf040
+
+#define GEN4_PPD_CLEAR_TRN 0x0001
+#define GEN4_PPD_LINKTRN 0x0008
+#define GEN4_PPD_CONN_MASK 0x0300
+#define SPR_PPD_CONN_MASK 0x0700
+#define GEN4_PPD_CONN_B2B 0x0200
+#define GEN4_PPD_DEV_MASK 0x1000
+#define GEN4_PPD_DEV_DSD 0x1000
+#define GEN4_PPD_DEV_USD 0x0000
+#define SPR_PPD_DEV_MASK 0x4000
+#define SPR_PPD_DEV_DSD 0x4000
+#define SPR_PPD_DEV_USD 0x0000
+#define GEN4_LINK_CTRL_LINK_DISABLE 0x0010
+
+#define GEN4_SLOTSTS 0xb05a
+#define GEN4_SLOTSTS_DLLSCS 0x100
+
+#define GEN4_PPD_TOPO_MASK (GEN4_PPD_CONN_MASK | GEN4_PPD_DEV_MASK)
+#define GEN4_PPD_TOPO_B2B_USD (GEN4_PPD_CONN_B2B | GEN4_PPD_DEV_USD)
+#define GEN4_PPD_TOPO_B2B_DSD (GEN4_PPD_CONN_B2B | GEN4_PPD_DEV_DSD)
+
+#define SPR_PPD_TOPO_MASK (SPR_PPD_CONN_MASK | SPR_PPD_DEV_MASK)
+#define SPR_PPD_TOPO_B2B_USD (GEN4_PPD_CONN_B2B | SPR_PPD_DEV_USD)
+#define SPR_PPD_TOPO_B2B_DSD (GEN4_PPD_CONN_B2B | SPR_PPD_DEV_DSD)
+
+#define GEN4_DB_COUNT 32
+#define GEN4_DB_LINK 32
+#define GEN4_DB_LINK_BIT BIT_ULL(GEN4_DB_LINK)
+#define GEN4_DB_MSIX_VECTOR_COUNT 33
+#define GEN4_DB_MSIX_VECTOR_SHIFT 1
+#define GEN4_DB_TOTAL_SHIFT 33
+#define GEN4_SPAD_COUNT 16
+
+#define NTB_CTL_E2I_BAR23_SNOOP 0x000004
+#define NTB_CTL_E2I_BAR23_NOSNOOP 0x000008
+#define NTB_CTL_I2E_BAR23_SNOOP 0x000010
+#define NTB_CTL_I2E_BAR23_NOSNOOP 0x000020
+#define NTB_CTL_E2I_BAR45_SNOOP 0x000040
+#define NTB_CTL_E2I_BAR45_NOSNOO 0x000080
+#define NTB_CTL_I2E_BAR45_SNOOP 0x000100
+#define NTB_CTL_I2E_BAR45_NOSNOOP 0x000200
+#define NTB_CTL_BUSNO_DIS_INC 0x000400
+#define NTB_CTL_LINK_DOWN 0x010000
+
+#define NTB_SJC_FORCEDETECT 0x000004
+
+#define NTB_LTR_SWSEL_ACTIVE 0x0
+#define NTB_LTR_SWSEL_IDLE 0x1
+
+#define NTB_LTR_NS_SHIFT 16
+#define NTB_LTR_ACTIVE_VAL 0x0000 /* 0 us */
+#define NTB_LTR_ACTIVE_LATSCALE 0x0800 /* 1us scale */
+#define NTB_LTR_ACTIVE_REQMNT 0x8000 /* snoop req enable */
+
+#define NTB_LTR_IDLE_VAL 0x0258 /* 600 us */
+#define NTB_LTR_IDLE_LATSCALE 0x0800 /* 1us scale */
+#define NTB_LTR_IDLE_REQMNT 0x8000 /* snoop req enable */
+
+ssize_t ndev_ntb4_debugfs_read(struct file *filp, char __user *ubuf,
+ size_t count, loff_t *offp);
+int gen4_init_dev(struct intel_ntb_dev *ndev);
+ssize_t ndev_ntb4_debugfs_read(struct file *filp, char __user *ubuf,
+ size_t count, loff_t *offp);
+
+extern const struct ntb_dev_ops intel_ntb4_ops;
+
+static inline int pdev_is_ICX(struct pci_dev *pdev)
+{
+ if (pdev_is_gen4(pdev) &&
+ pdev->revision >= PCI_DEVICE_REVISION_ICX_MIN &&
+ pdev->revision <= PCI_DEVICE_REVISION_ICX_MAX)
+ return 1;
+ return 0;
+}
+
+static inline int pdev_is_SPR(struct pci_dev *pdev)
+{
+ if (pdev_is_gen4(pdev) &&
+ pdev->revision > PCI_DEVICE_REVISION_ICX_MAX)
+ return 1;
+ return 0;
+}
+
+#endif