xref: /openbmc/linux/drivers/ntb/hw/intel/ntb_hw_gen3.h (revision 58184e95)
1 /*
2  * This file is provided under a dual BSD/GPLv2 license.  When using or
3  *   redistributing this file, you may do so under either license.
4  *
5  *   GPL LICENSE SUMMARY
6  *
7  *   Copyright(c) 2012-2017 Intel Corporation. All rights reserved.
8  *
9  *   This program is free software; you can redistribute it and/or modify
10  *   it under the terms of version 2 of the GNU General Public License as
11  *   published by the Free Software Foundation.
12  *
13  *   BSD LICENSE
14  *
15  *   Copyright(c) 2012-2017 Intel Corporation. All rights reserved.
16  *
17  *   Redistribution and use in source and binary forms, with or without
18  *   modification, are permitted provided that the following conditions
19  *   are met:
20  *
21  *     * Redistributions of source code must retain the above copyright
22  *       notice, this list of conditions and the following disclaimer.
23  *     * Redistributions in binary form must reproduce the above copy
24  *       notice, this list of conditions and the following disclaimer in
25  *       the documentation and/or other materials provided with the
26  *       distribution.
27  *     * Neither the name of Intel Corporation nor the names of its
28  *       contributors may be used to endorse or promote products derived
29  *       from this software without specific prior written permission.
30  *
31  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
34  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
36  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
37  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
38  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
39  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
40  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
41  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
42  */
43 
44 #ifndef _NTB_INTEL_GEN3_H_
45 #define _NTB_INTEL_GEN3_H_
46 
47 #include "ntb_hw_intel.h"
48 
49 /* Intel Skylake Xeon hardware */
50 #define GEN3_IMBAR1SZ_OFFSET		0x00d0
51 #define GEN3_IMBAR2SZ_OFFSET		0x00d1
52 #define GEN3_EMBAR1SZ_OFFSET		0x00d2
53 #define GEN3_EMBAR2SZ_OFFSET		0x00d3
54 #define GEN3_DEVCTRL_OFFSET		0x0098
55 #define GEN3_DEVSTS_OFFSET		0x009a
56 #define GEN3_UNCERRSTS_OFFSET		0x014c
57 #define GEN3_CORERRSTS_OFFSET		0x0158
58 #define GEN3_LINK_STATUS_OFFSET		0x01a2
59 
60 #define GEN3_NTBCNTL_OFFSET		0x0000
61 #define GEN3_IMBAR1XBASE_OFFSET		0x0010		/* SBAR2XLAT */
62 #define GEN3_IMBAR1XLMT_OFFSET		0x0018		/* SBAR2LMT */
63 #define GEN3_IMBAR2XBASE_OFFSET		0x0020		/* SBAR4XLAT */
64 #define GEN3_IMBAR2XLMT_OFFSET		0x0028		/* SBAR4LMT */
65 #define GEN3_IM_INT_STATUS_OFFSET	0x0040
66 #define GEN3_IM_INT_DISABLE_OFFSET	0x0048
67 #define GEN3_IM_SPAD_OFFSET		0x0080		/* SPAD */
68 #define GEN3_USMEMMISS_OFFSET		0x0070
69 #define GEN3_INTVEC_OFFSET		0x00d0
70 #define GEN3_IM_DOORBELL_OFFSET		0x0100		/* SDOORBELL0 */
71 #define GEN3_B2B_SPAD_OFFSET		0x0180		/* B2B SPAD */
72 #define GEN3_EMBAR0XBASE_OFFSET		0x4008		/* B2B_XLAT */
73 #define GEN3_EMBAR1XBASE_OFFSET		0x4010		/* PBAR2XLAT */
74 #define GEN3_EMBAR1XLMT_OFFSET		0x4018		/* PBAR2LMT */
75 #define GEN3_EMBAR2XBASE_OFFSET		0x4020		/* PBAR4XLAT */
76 #define GEN3_EMBAR2XLMT_OFFSET		0x4028		/* PBAR4LMT */
77 #define GEN3_EM_INT_STATUS_OFFSET	0x4040
78 #define GEN3_EM_INT_DISABLE_OFFSET	0x4048
79 #define GEN3_EM_SPAD_OFFSET		0x4080		/* remote SPAD */
80 #define GEN3_EM_DOORBELL_OFFSET		0x4100		/* PDOORBELL0 */
81 #define GEN3_SPCICMD_OFFSET		0x4504		/* SPCICMD */
82 #define GEN3_EMBAR0_OFFSET		0x4510		/* SBAR0BASE */
83 #define GEN3_EMBAR1_OFFSET		0x4518		/* SBAR23BASE */
84 #define GEN3_EMBAR2_OFFSET		0x4520		/* SBAR45BASE */
85 
86 #define GEN3_DB_COUNT			32
87 #define GEN3_DB_LINK			32
88 #define GEN3_DB_LINK_BIT		BIT_ULL(GEN3_DB_LINK)
89 #define GEN3_DB_MSIX_VECTOR_COUNT	33
90 #define GEN3_DB_MSIX_VECTOR_SHIFT	1
91 #define GEN3_DB_TOTAL_SHIFT		33
92 #define GEN3_SPAD_COUNT			16
93 
gen3_db_ioread(const void __iomem * mmio)94 static inline u64 gen3_db_ioread(const void __iomem *mmio)
95 {
96 	return ioread64(mmio);
97 }
98 
gen3_db_iowrite(u64 bits,void __iomem * mmio)99 static inline void gen3_db_iowrite(u64 bits, void __iomem *mmio)
100 {
101 	iowrite64(bits, mmio);
102 }
103 
104 ssize_t ndev_ntb3_debugfs_read(struct file *filp, char __user *ubuf,
105 				      size_t count, loff_t *offp);
106 int gen3_init_dev(struct intel_ntb_dev *ndev);
107 int intel_ntb3_link_enable(struct ntb_dev *ntb, enum ntb_speed max_speed,
108 		enum ntb_width max_width);
109 u64 intel_ntb3_db_read(struct ntb_dev *ntb);
110 int intel_ntb3_db_clear(struct ntb_dev *ntb, u64 db_bits);
111 int intel_ntb3_peer_db_set(struct ntb_dev *ntb, u64 db_bits);
112 int intel_ntb3_peer_db_addr(struct ntb_dev *ntb, phys_addr_t *db_addr,
113 				resource_size_t *db_size,
114 				u64 *db_data, int db_bit);
115 
116 extern const struct ntb_dev_ops intel_ntb3_ops;
117 
118 #endif
119