1
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 <net/smc.h>
9#include <asm/pci_insn.h>
10
11#define UTIL_STR_LEN 16
12
13
14
15
16#define ISM_DMB_WORD_OFFSET 1
17#define ISM_DMB_BIT_OFFSET (ISM_DMB_WORD_OFFSET * 32)
18#define ISM_NR_DMBS 1920
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#define ISM_ERROR 0xFFFF
36
37struct ism_req_hdr {
38 u32 cmd;
39 u16 : 16;
40 u16 len;
41};
42
43struct ism_resp_hdr {
44 u32 cmd;
45 u16 ret;
46 u16 len;
47};
48
49union ism_reg_sba {
50 struct {
51 struct ism_req_hdr hdr;
52 u64 sba;
53 } request;
54 struct {
55 struct ism_resp_hdr hdr;
56 } response;
57} __aligned(16);
58
59union ism_reg_ieq {
60 struct {
61 struct ism_req_hdr hdr;
62 u64 ieq;
63 u64 len;
64 } request;
65 struct {
66 struct ism_resp_hdr hdr;
67 } response;
68} __aligned(16);
69
70union ism_read_gid {
71 struct {
72 struct ism_req_hdr hdr;
73 } request;
74 struct {
75 struct ism_resp_hdr hdr;
76 u64 gid;
77 } response;
78} __aligned(16);
79
80union ism_qi {
81 struct {
82 struct ism_req_hdr hdr;
83 } request;
84 struct {
85 struct ism_resp_hdr hdr;
86 u32 version;
87 u32 max_len;
88 u64 ism_state;
89 u64 my_gid;
90 u64 sba;
91 u64 ieq;
92 u32 ieq_len;
93 u32 : 32;
94 u32 dmbs_owned;
95 u32 dmbs_used;
96 u32 vlan_required;
97 u32 vlan_nr_ids;
98 u16 vlan_id[64];
99 } response;
100} __aligned(64);
101
102union ism_query_rgid {
103 struct {
104 struct ism_req_hdr hdr;
105 u64 rgid;
106 u32 vlan_valid;
107 u32 vlan_id;
108 } request;
109 struct {
110 struct ism_resp_hdr hdr;
111 } response;
112} __aligned(16);
113
114union ism_reg_dmb {
115 struct {
116 struct ism_req_hdr hdr;
117 u64 dmb;
118 u32 dmb_len;
119 u32 sba_idx;
120 u32 vlan_valid;
121 u32 vlan_id;
122 u64 rgid;
123 } request;
124 struct {
125 struct ism_resp_hdr hdr;
126 u64 dmb_tok;
127 } response;
128} __aligned(32);
129
130union ism_sig_ieq {
131 struct {
132 struct ism_req_hdr hdr;
133 u64 rgid;
134 u32 trigger_irq;
135 u32 event_code;
136 u64 info;
137 } request;
138 struct {
139 struct ism_resp_hdr hdr;
140 } response;
141} __aligned(32);
142
143union ism_unreg_dmb {
144 struct {
145 struct ism_req_hdr hdr;
146 u64 dmb_tok;
147 } request;
148 struct {
149 struct ism_resp_hdr hdr;
150 } response;
151} __aligned(16);
152
153union ism_cmd_simple {
154 struct {
155 struct ism_req_hdr hdr;
156 } request;
157 struct {
158 struct ism_resp_hdr hdr;
159 } response;
160} __aligned(8);
161
162union ism_set_vlan_id {
163 struct {
164 struct ism_req_hdr hdr;
165 u64 vlan_id;
166 } request;
167 struct {
168 struct ism_resp_hdr hdr;
169 } response;
170} __aligned(16);
171
172struct ism_eq_header {
173 u64 idx;
174 u64 ieq_len;
175 u64 entry_len;
176 u64 : 64;
177};
178
179struct ism_eq {
180 struct ism_eq_header header;
181 struct smcd_event entry[15];
182};
183
184struct ism_sba {
185 u32 s : 1;
186 u32 e : 1;
187 u32 : 30;
188 u32 dmb_bits[ISM_NR_DMBS / 32];
189 u32 reserved[3];
190 u16 dmbe_mask[ISM_NR_DMBS];
191};
192
193struct ism_dev {
194 spinlock_t lock;
195 struct pci_dev *pdev;
196 struct smcd_dev *smcd;
197
198 struct ism_sba *sba;
199 dma_addr_t sba_dma_addr;
200 DECLARE_BITMAP(sba_bitmap, ISM_NR_DMBS);
201
202 struct ism_eq *ieq;
203 dma_addr_t ieq_dma_addr;
204
205 int ieq_idx;
206};
207
208#define ISM_CREATE_REQ(dmb, idx, sf, offset) \
209 ((dmb) | (idx) << 24 | (sf) << 23 | (offset))
210
211static inline void __ism_read_cmd(struct ism_dev *ism, void *data,
212 unsigned long offset, unsigned long len)
213{
214 struct zpci_dev *zdev = to_zpci(ism->pdev);
215 u64 req = ZPCI_CREATE_REQ(zdev->fh, 2, 8);
216
217 while (len > 0) {
218 __zpci_load(data, req, offset);
219 offset += 8;
220 data += 8;
221 len -= 8;
222 }
223}
224
225static inline void __ism_write_cmd(struct ism_dev *ism, void *data,
226 unsigned long offset, unsigned long len)
227{
228 struct zpci_dev *zdev = to_zpci(ism->pdev);
229 u64 req = ZPCI_CREATE_REQ(zdev->fh, 2, len);
230
231 if (len)
232 __zpci_store_block(data, req, offset);
233}
234
235static inline int __ism_move(struct ism_dev *ism, u64 dmb_req, void *data,
236 unsigned int size)
237{
238 struct zpci_dev *zdev = to_zpci(ism->pdev);
239 u64 req = ZPCI_CREATE_REQ(zdev->fh, 0, size);
240
241 return __zpci_store_block(data, req, dmb_req);
242}
243
244#endif
245
