1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 #ifndef __CRB_H
3 #define __CRB_H
4 #include <linux/types.h>
5 #include "nx.h"
6
7 /* CCW 842 CI/FC masks
8 * NX P8 workbook, section 4.3.1, figure 4-6
9 * "CI/FC Boundary by NX CT type"
10 */
11 #define CCW_CI_842 (0x00003ff8)
12 #define CCW_FC_842 (0x00000007)
13
14 /* Chapter 6.5.8 Coprocessor-Completion Block (CCB) */
15
16 #define CCB_VALUE (0x3fffffffffffffff)
17 #define CCB_ADDRESS (0xfffffffffffffff8)
18 #define CCB_CM (0x0000000000000007)
19 #define CCB_CM0 (0x0000000000000004)
20 #define CCB_CM12 (0x0000000000000003)
21
22 #define CCB_CM0_ALL_COMPLETIONS (0x0)
23 #define CCB_CM0_LAST_IN_CHAIN (0x4)
24 #define CCB_CM12_STORE (0x0)
25 #define CCB_CM12_INTERRUPT (0x1)
26
27 #define CCB_SIZE (0x10)
28 #define CCB_ALIGN CCB_SIZE
29
30 struct coprocessor_completion_block {
31 __be64 value;
32 __be64 address;
33 } __aligned(CCB_ALIGN);
34
35
36 /* Chapter 6.5.7 Coprocessor-Status Block (CSB) */
37
38 #define CSB_V (0x80)
39 #define CSB_F (0x04)
40 #define CSB_CH (0x03)
41 #define CSB_CE_INCOMPLETE (0x80)
42 #define CSB_CE_TERMINATION (0x40)
43 #define CSB_CE_TPBC (0x20)
44
45 #define CSB_CC_SUCCESS (0)
46 #define CSB_CC_INVALID_ALIGN (1)
47 #define CSB_CC_OPERAND_OVERLAP (2)
48 #define CSB_CC_DATA_LENGTH (3)
49 #define CSB_CC_TRANSLATION (5)
50 #define CSB_CC_PROTECTION (6)
51 #define CSB_CC_RD_EXTERNAL (7)
52 #define CSB_CC_INVALID_OPERAND (8)
53 #define CSB_CC_PRIVILEGE (9)
54 #define CSB_CC_INTERNAL (10)
55 #define CSB_CC_WR_EXTERNAL (12)
56 #define CSB_CC_NOSPC (13)
57 #define CSB_CC_EXCESSIVE_DDE (14)
58 #define CSB_CC_WR_TRANSLATION (15)
59 #define CSB_CC_WR_PROTECTION (16)
60 #define CSB_CC_UNKNOWN_CODE (17)
61 #define CSB_CC_ABORT (18)
62 #define CSB_CC_TRANSPORT (20)
63 #define CSB_CC_SEGMENTED_DDL (31)
64 #define CSB_CC_PROGRESS_POINT (32)
65 #define CSB_CC_DDE_OVERFLOW (33)
66 #define CSB_CC_SESSION (34)
67 #define CSB_CC_PROVISION (36)
68 #define CSB_CC_CHAIN (37)
69 #define CSB_CC_SEQUENCE (38)
70 #define CSB_CC_HW (39)
71
72 #define CSB_SIZE (0x10)
73 #define CSB_ALIGN CSB_SIZE
74
75 struct coprocessor_status_block {
76 __u8 flags;
77 __u8 cs;
78 __u8 cc;
79 __u8 ce;
80 __be32 count;
81 __be64 address;
82 } __aligned(CSB_ALIGN);
83
84
85 /* Chapter 6.5.10 Data-Descriptor List (DDL)
86 * each list contains one or more Data-Descriptor Entries (DDE)
87 */
88
89 #define DDE_P (0x8000)
90
91 #define DDE_SIZE (0x10)
92 #define DDE_ALIGN DDE_SIZE
93
94 struct data_descriptor_entry {
95 __be16 flags;
96 __u8 count;
97 __u8 index;
98 __be32 length;
99 __be64 address;
100 } __aligned(DDE_ALIGN);
101
102
103 /* Chapter 6.5.2 Coprocessor-Request Block (CRB) */
104
105 #define CRB_SIZE (0x80)
106 #define CRB_ALIGN (0x100) /* Errata: requires 256 alignment */
107
108
109 /* Coprocessor Status Block field
110 * ADDRESS address of CSB
111 * C CCB is valid
112 * AT 0 = addrs are virtual, 1 = addrs are phys
113 * M enable perf monitor
114 */
115 #define CRB_CSB_ADDRESS (0xfffffffffffffff0)
116 #define CRB_CSB_C (0x0000000000000008)
117 #define CRB_CSB_AT (0x0000000000000002)
118 #define CRB_CSB_M (0x0000000000000001)
119
120 struct coprocessor_request_block {
121 __be32 ccw;
122 __be32 flags;
123 __be64 csb_addr;
124
125 struct data_descriptor_entry source;
126 struct data_descriptor_entry target;
127
128 struct coprocessor_completion_block ccb;
129
130 __u8 reserved[48];
131
132 struct coprocessor_status_block csb;
133 } __aligned(CRB_ALIGN);
134
135 #define crb_csb_addr(c) __be64_to_cpu(c->csb_addr)
136 #define crb_nx_fault_addr(c) __be64_to_cpu(c->stamp.nx.fault_storage_addr)
137 #define crb_nx_flags(c) c->stamp.nx.flags
138 #define crb_nx_fault_status(c) c->stamp.nx.fault_status
139 #define crb_nx_pswid(c) c->stamp.nx.pswid
140
141
142 /* RFC02167 Initiate Coprocessor Instructions document
143 * Chapter 8.2.1.1.1 RS
144 * Chapter 8.2.3 Coprocessor Directive
145 * Chapter 8.2.4 Execution
146 *
147 * The CCW must be converted to BE before passing to icswx()
148 */
149
150 #define CCW_PS (0xff000000)
151 #define CCW_CT (0x00ff0000)
152 #define CCW_CD (0x0000ffff)
153 #define CCW_CL (0x0000c000)
154
155 #endif
156
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