1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef S390_ISM_H |
3 | #define S390_ISM_H |
4 | |
5 | #include <linux/spinlock.h> |
6 | #include <linux/types.h> |
7 | #include <linux/pci.h> |
8 | #include <linux/ism.h> |
9 | #include <net/smc.h> |
10 | #include <asm/pci_insn.h> |
11 | |
12 | #define UTIL_STR_LEN 16 |
13 | |
14 | /* |
15 | * Do not use the first word of the DMB bits to ensure 8 byte aligned access. |
16 | */ |
17 | #define ISM_DMB_WORD_OFFSET 1 |
18 | #define ISM_DMB_BIT_OFFSET (ISM_DMB_WORD_OFFSET * 32) |
19 | |
20 | #define ISM_REG_SBA 0x1 |
21 | #define ISM_REG_IEQ 0x2 |
22 | #define ISM_READ_GID 0x3 |
23 | #define ISM_ADD_VLAN_ID 0x4 |
24 | #define ISM_DEL_VLAN_ID 0x5 |
25 | #define ISM_SET_VLAN 0x6 |
26 | #define ISM_RESET_VLAN 0x7 |
27 | #define ISM_QUERY_INFO 0x8 |
28 | #define ISM_QUERY_RGID 0x9 |
29 | #define ISM_REG_DMB 0xA |
30 | #define ISM_UNREG_DMB 0xB |
31 | #define ISM_SIGNAL_IEQ 0xE |
32 | #define ISM_UNREG_SBA 0x11 |
33 | #define ISM_UNREG_IEQ 0x12 |
34 | |
35 | struct ism_req_hdr { |
36 | u32 cmd; |
37 | u16 : 16; |
38 | u16 len; |
39 | }; |
40 | |
41 | struct ism_resp_hdr { |
42 | u32 cmd; |
43 | u16 ret; |
44 | u16 len; |
45 | }; |
46 | |
47 | union ism_reg_sba { |
48 | struct { |
49 | struct ism_req_hdr hdr; |
50 | u64 sba; |
51 | } request; |
52 | struct { |
53 | struct ism_resp_hdr hdr; |
54 | } response; |
55 | } __aligned(16); |
56 | |
57 | union ism_reg_ieq { |
58 | struct { |
59 | struct ism_req_hdr hdr; |
60 | u64 ieq; |
61 | u64 len; |
62 | } request; |
63 | struct { |
64 | struct ism_resp_hdr hdr; |
65 | } response; |
66 | } __aligned(16); |
67 | |
68 | union ism_read_gid { |
69 | struct { |
70 | struct ism_req_hdr hdr; |
71 | } request; |
72 | struct { |
73 | struct ism_resp_hdr hdr; |
74 | u64 gid; |
75 | } response; |
76 | } __aligned(16); |
77 | |
78 | union ism_qi { |
79 | struct { |
80 | struct ism_req_hdr hdr; |
81 | } request; |
82 | struct { |
83 | struct ism_resp_hdr hdr; |
84 | u32 version; |
85 | u32 max_len; |
86 | u64 ism_state; |
87 | u64 my_gid; |
88 | u64 sba; |
89 | u64 ieq; |
90 | u32 ieq_len; |
91 | u32 : 32; |
92 | u32 dmbs_owned; |
93 | u32 dmbs_used; |
94 | u32 vlan_required; |
95 | u32 vlan_nr_ids; |
96 | u16 vlan_id[64]; |
97 | } response; |
98 | } __aligned(64); |
99 | |
100 | union ism_query_rgid { |
101 | struct { |
102 | struct ism_req_hdr hdr; |
103 | u64 rgid; |
104 | u32 vlan_valid; |
105 | u32 vlan_id; |
106 | } request; |
107 | struct { |
108 | struct ism_resp_hdr hdr; |
109 | } response; |
110 | } __aligned(16); |
111 | |
112 | union ism_reg_dmb { |
113 | struct { |
114 | struct ism_req_hdr hdr; |
115 | u64 dmb; |
116 | u32 dmb_len; |
117 | u32 sba_idx; |
118 | u32 vlan_valid; |
119 | u32 vlan_id; |
120 | u64 rgid; |
121 | } request; |
122 | struct { |
123 | struct ism_resp_hdr hdr; |
124 | u64 dmb_tok; |
125 | } response; |
126 | } __aligned(32); |
127 | |
128 | union ism_sig_ieq { |
129 | struct { |
130 | struct ism_req_hdr hdr; |
131 | u64 rgid; |
132 | u32 trigger_irq; |
133 | u32 event_code; |
134 | u64 info; |
135 | } request; |
136 | struct { |
137 | struct ism_resp_hdr hdr; |
138 | } response; |
139 | } __aligned(32); |
140 | |
141 | union ism_unreg_dmb { |
142 | struct { |
143 | struct ism_req_hdr hdr; |
144 | u64 dmb_tok; |
145 | } request; |
146 | struct { |
147 | struct ism_resp_hdr hdr; |
148 | } response; |
149 | } __aligned(16); |
150 | |
151 | union ism_cmd_simple { |
152 | struct { |
153 | struct ism_req_hdr hdr; |
154 | } request; |
155 | struct { |
156 | struct ism_resp_hdr hdr; |
157 | } response; |
158 | } __aligned(8); |
159 | |
160 | union ism_set_vlan_id { |
161 | struct { |
162 | struct ism_req_hdr hdr; |
163 | u64 vlan_id; |
164 | } request; |
165 | struct { |
166 | struct ism_resp_hdr hdr; |
167 | } response; |
168 | } __aligned(16); |
169 | |
170 | struct { |
171 | u64 ; |
172 | u64 ; |
173 | u64 ; |
174 | u64 : 64; |
175 | }; |
176 | |
177 | struct ism_eq { |
178 | struct ism_eq_header ; |
179 | struct ism_event entry[15]; |
180 | }; |
181 | |
182 | struct ism_sba { |
183 | u32 s : 1; /* summary bit */ |
184 | u32 e : 1; /* event bit */ |
185 | u32 : 30; |
186 | u32 dmb_bits[ISM_NR_DMBS / 32]; |
187 | u32 reserved[3]; |
188 | u16 dmbe_mask[ISM_NR_DMBS]; |
189 | }; |
190 | |
191 | #define ISM_CREATE_REQ(dmb, idx, sf, offset) \ |
192 | ((dmb) | (idx) << 24 | (sf) << 23 | (offset)) |
193 | |
194 | static inline void __ism_read_cmd(struct ism_dev *ism, void *data, |
195 | unsigned long offset, unsigned long len) |
196 | { |
197 | struct zpci_dev *zdev = to_zpci(ism->pdev); |
198 | u64 req = ZPCI_CREATE_REQ(zdev->fh, 2, 8); |
199 | |
200 | while (len > 0) { |
201 | __zpci_load(data, req, offset); |
202 | offset += 8; |
203 | data += 8; |
204 | len -= 8; |
205 | } |
206 | } |
207 | |
208 | static inline void __ism_write_cmd(struct ism_dev *ism, void *data, |
209 | unsigned long offset, unsigned long len) |
210 | { |
211 | struct zpci_dev *zdev = to_zpci(ism->pdev); |
212 | u64 req = ZPCI_CREATE_REQ(zdev->fh, 2, len); |
213 | |
214 | if (len) |
215 | __zpci_store_block(data, req, offset); |
216 | } |
217 | |
218 | static inline int __ism_move(struct ism_dev *ism, u64 dmb_req, void *data, |
219 | unsigned int size) |
220 | { |
221 | struct zpci_dev *zdev = to_zpci(ism->pdev); |
222 | u64 req = ZPCI_CREATE_REQ(zdev->fh, 0, size); |
223 | |
224 | return __zpci_store_block(data, req, dmb_req); |
225 | } |
226 | |
227 | #endif /* S390_ISM_H */ |
228 | |