Linux kernel mirror (for testing)
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1/*
2 * Copyright (c) 2016, Mellanox Technologies. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32
33#ifndef SOC_NPS_COMMON_H
34#define SOC_NPS_COMMON_H
35
36#ifdef CONFIG_SMP
37#define NPS_IPI_IRQ 5
38#endif
39
40#define NPS_HOST_REG_BASE 0xF6000000
41
42#define NPS_MSU_BLKID 0x018
43
44#define CTOP_INST_RSPI_GIC_0_R12 0x3C56117E
45#define CTOP_INST_MOV2B_FLIP_R3_B1_B2_INST 0x5B60
46#define CTOP_INST_MOV2B_FLIP_R3_B1_B2_LIMM 0x00010422
47
48#ifndef __ASSEMBLY__
49
50/* In order to increase compilation test coverage */
51#ifdef CONFIG_ARC
52static inline void nps_ack_gic(void)
53{
54 __asm__ __volatile__ (
55 " .word %0\n"
56 :
57 : "i"(CTOP_INST_RSPI_GIC_0_R12)
58 : "memory");
59}
60#else
61static inline void nps_ack_gic(void) { }
62#define write_aux_reg(r, v)
63#define read_aux_reg(r) 0
64#endif
65
66/* CPU global ID */
67struct global_id {
68 union {
69 struct {
70#ifdef CONFIG_EZNPS_MTM_EXT
71 u32 __reserved:20, cluster:4, core:4, thread:4;
72#else
73 u32 __reserved:24, cluster:4, core:4;
74#endif
75 };
76 u32 value;
77 };
78};
79
80/*
81 * Convert logical to physical CPU IDs
82 *
83 * The conversion swap bits 1 and 2 of cluster id (out of 4 bits)
84 * Now quad of logical clusters id's are adjacent physically,
85 * and not like the id's physically came with each cluster.
86 * Below table is 4x4 mesh of core clusters as it layout on chip.
87 * Cluster ids are in format: logical (physical)
88 *
89 * ----------------- ------------------
90 * 3 | 5 (3) 7 (7) | | 13 (11) 15 (15)|
91 *
92 * 2 | 4 (2) 6 (6) | | 12 (10) 14 (14)|
93 * ----------------- ------------------
94 * 1 | 1 (1) 3 (5) | | 9 (9) 11 (13)|
95 *
96 * 0 | 0 (0) 2 (4) | | 8 (8) 10 (12)|
97 * ----------------- ------------------
98 * 0 1 2 3
99 */
100static inline int nps_cluster_logic_to_phys(int cluster)
101{
102#ifdef __arc__
103 __asm__ __volatile__(
104 " mov r3,%0\n"
105 " .short %1\n"
106 " .word %2\n"
107 " mov %0,r3\n"
108 : "+r"(cluster)
109 : "i"(CTOP_INST_MOV2B_FLIP_R3_B1_B2_INST),
110 "i"(CTOP_INST_MOV2B_FLIP_R3_B1_B2_LIMM)
111 : "r3");
112#endif
113
114 return cluster;
115}
116
117#define NPS_CPU_TO_CLUSTER_NUM(cpu) \
118 ({ struct global_id gid; gid.value = cpu; \
119 nps_cluster_logic_to_phys(gid.cluster); })
120
121struct nps_host_reg_address {
122 union {
123 struct {
124 u32 base:8, cl_x:4, cl_y:4,
125 blkid:6, reg:8, __reserved:2;
126 };
127 u32 value;
128 };
129};
130
131struct nps_host_reg_address_non_cl {
132 union {
133 struct {
134 u32 base:7, blkid:11, reg:12, __reserved:2;
135 };
136 u32 value;
137 };
138};
139
140static inline void *nps_host_reg_non_cl(u32 blkid, u32 reg)
141{
142 struct nps_host_reg_address_non_cl reg_address;
143
144 reg_address.value = NPS_HOST_REG_BASE;
145 reg_address.blkid = blkid;
146 reg_address.reg = reg;
147
148 return (void *)reg_address.value;
149}
150
151static inline void *nps_host_reg(u32 cpu, u32 blkid, u32 reg)
152{
153 struct nps_host_reg_address reg_address;
154 u32 cl = NPS_CPU_TO_CLUSTER_NUM(cpu);
155
156 reg_address.value = NPS_HOST_REG_BASE;
157 reg_address.cl_x = (cl >> 2) & 0x3;
158 reg_address.cl_y = cl & 0x3;
159 reg_address.blkid = blkid;
160 reg_address.reg = reg;
161
162 return (void *)reg_address.value;
163}
164#endif /* __ASSEMBLY__ */
165
166#endif /* SOC_NPS_COMMON_H */