Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
[linux-2.6-microblaze.git] / drivers / ntb / hw / intel / ntb_hw_gen4.h
1 /* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)          */
2 /* Copyright(c) 2020 Intel Corporation. All rights reserved.   */
3 #ifndef _NTB_INTEL_GEN4_H_
4 #define _NTB_INTEL_GEN4_H_
5
6 #include "ntb_hw_intel.h"
7
8 /* Supported PCI device revision range for ICX */
9 #define PCI_DEVICE_REVISION_ICX_MIN     0x2
10 #define PCI_DEVICE_REVISION_ICX_MAX     0xF
11
12 /* Intel Gen4 NTB hardware */
13 /* PCIe config space */
14 #define GEN4_IMBAR23SZ_OFFSET           0x00c4
15 #define GEN4_IMBAR45SZ_OFFSET           0x00c5
16 #define GEN4_EMBAR23SZ_OFFSET           0x00c6
17 #define GEN4_EMBAR45SZ_OFFSET           0x00c7
18 #define GEN4_DEVCTRL_OFFSET             0x0048
19 #define GEN4_DEVSTS_OFFSET              0x004a
20 #define GEN4_UNCERRSTS_OFFSET           0x0104
21 #define GEN4_CORERRSTS_OFFSET           0x0110
22
23 /* BAR0 MMIO */
24 #define GEN4_NTBCNTL_OFFSET             0x0000
25 #define GEN4_IM23XBASE_OFFSET           0x0010  /* IMBAR1XBASE */
26 #define GEN4_IM23XLMT_OFFSET            0x0018  /* IMBAR1XLMT */
27 #define GEN4_IM45XBASE_OFFSET           0x0020  /* IMBAR2XBASE */
28 #define GEN4_IM45XLMT_OFFSET            0x0028  /* IMBAR2XLMT */
29 #define GEN4_IM_INT_STATUS_OFFSET       0x0040
30 #define GEN4_IM_INT_DISABLE_OFFSET      0x0048
31 #define GEN4_INTVEC_OFFSET              0x0050  /* 0-32 vecs */
32 #define GEN4_IM23XBASEIDX_OFFSET        0x0074
33 #define GEN4_IM45XBASEIDX_OFFSET        0x0076
34 #define GEN4_IM_SPAD_OFFSET             0x0080  /* 0-15 SPADs */
35 #define GEN4_IM_SPAD_SEM_OFFSET         0x00c0  /* SPAD hw semaphore */
36 #define GEN4_IM_SPAD_STICKY_OFFSET      0x00c4  /* sticky SPAD */
37 #define GEN4_IM_DOORBELL_OFFSET         0x0100  /* 0-31 doorbells */
38 #define GEN4_EM_SPAD_OFFSET             0x8080
39 /* note, link status is now in MMIO and not config space for NTB */
40 #define GEN4_LINK_CTRL_OFFSET           0xb050
41 #define GEN4_LINK_STATUS_OFFSET         0xb052
42 #define GEN4_PPD0_OFFSET                0xb0d4
43 #define GEN4_PPD1_OFFSET                0xb4c0
44 #define GEN4_LTSSMSTATEJMP              0xf040
45
46 #define GEN4_PPD_CLEAR_TRN              0x0001
47 #define GEN4_PPD_LINKTRN                0x0008
48 #define GEN4_PPD_CONN_MASK              0x0300
49 #define GEN4_PPD_CONN_B2B               0x0200
50 #define GEN4_PPD_DEV_MASK               0x1000
51 #define GEN4_PPD_DEV_DSD                0x1000
52 #define GEN4_PPD_DEV_USD                0x0000
53 #define GEN4_LINK_CTRL_LINK_DISABLE     0x0010
54
55 #define GEN4_SLOTSTS                    0xb05a
56 #define GEN4_SLOTSTS_DLLSCS             0x100
57
58 #define GEN4_PPD_TOPO_MASK      (GEN4_PPD_CONN_MASK | GEN4_PPD_DEV_MASK)
59 #define GEN4_PPD_TOPO_B2B_USD   (GEN4_PPD_CONN_B2B | GEN4_PPD_DEV_USD)
60 #define GEN4_PPD_TOPO_B2B_DSD   (GEN4_PPD_CONN_B2B | GEN4_PPD_DEV_DSD)
61
62 #define GEN4_DB_COUNT                   32
63 #define GEN4_DB_LINK                    32
64 #define GEN4_DB_LINK_BIT                BIT_ULL(GEN4_DB_LINK)
65 #define GEN4_DB_MSIX_VECTOR_COUNT       33
66 #define GEN4_DB_MSIX_VECTOR_SHIFT       1
67 #define GEN4_DB_TOTAL_SHIFT             33
68 #define GEN4_SPAD_COUNT                 16
69
70 #define NTB_CTL_E2I_BAR23_SNOOP         0x000004
71 #define NTB_CTL_E2I_BAR23_NOSNOOP       0x000008
72 #define NTB_CTL_I2E_BAR23_SNOOP         0x000010
73 #define NTB_CTL_I2E_BAR23_NOSNOOP       0x000020
74 #define NTB_CTL_E2I_BAR45_SNOOP         0x000040
75 #define NTB_CTL_E2I_BAR45_NOSNOO        0x000080
76 #define NTB_CTL_I2E_BAR45_SNOOP         0x000100
77 #define NTB_CTL_I2E_BAR45_NOSNOOP       0x000200
78 #define NTB_CTL_BUSNO_DIS_INC           0x000400
79 #define NTB_CTL_LINK_DOWN               0x010000
80
81 #define NTB_SJC_FORCEDETECT             0x000004
82
83 ssize_t ndev_ntb4_debugfs_read(struct file *filp, char __user *ubuf,
84                                       size_t count, loff_t *offp);
85 int gen4_init_dev(struct intel_ntb_dev *ndev);
86 ssize_t ndev_ntb4_debugfs_read(struct file *filp, char __user *ubuf,
87                                       size_t count, loff_t *offp);
88
89 extern const struct ntb_dev_ops intel_ntb4_ops;
90
91 static inline int pdev_is_ICX(struct pci_dev *pdev)
92 {
93         if (pdev_is_gen4(pdev) &&
94             pdev->revision >= PCI_DEVICE_REVISION_ICX_MIN &&
95             pdev->revision <= PCI_DEVICE_REVISION_ICX_MAX)
96                 return 1;
97         return 0;
98 }
99
100 #endif