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
35struct ism_req_hdr {
36 u32 cmd;
37 u16 : 16;
38 u16 len;
39};
40
41struct ism_resp_hdr {
42 u32 cmd;
43 u16 ret;
44 u16 len;
45};
46
47union 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
57union 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
68union 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
78union 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
100union 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
112union 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
128union 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
141union 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
151union 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
160union 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
170struct ism_eq_header {
171 u64 idx;
172 u64 ieq_len;
173 u64 entry_len;
174 u64 : 64;
175};
176
177struct ism_eq {
178 struct ism_eq_header header;
179 struct smcd_event entry[15];
180};
181
182struct ism_sba {
183 u32 s : 1;
184 u32 e : 1;
185 u32 : 30;
186 u32 dmb_bits[ISM_NR_DMBS / 32];
187 u32 reserved[3];
188 u16 dmbe_mask[ISM_NR_DMBS];
189};
190
191struct ism_dev {
192 spinlock_t lock;
193 struct pci_dev *pdev;
194 struct smcd_dev *smcd;
195
196 struct ism_sba *sba;
197 dma_addr_t sba_dma_addr;
198 DECLARE_BITMAP(sba_bitmap, ISM_NR_DMBS);
199
200 struct ism_eq *ieq;
201 dma_addr_t ieq_dma_addr;
202
203 int ieq_idx;
204};
205
206#define ISM_CREATE_REQ(dmb, idx, sf, offset) \
207 ((dmb) | (idx) << 24 | (sf) << 23 | (offset))
208
209static inline void __ism_read_cmd(struct ism_dev *ism, void *data,
210 unsigned long offset, unsigned long len)
211{
212 struct zpci_dev *zdev = to_zpci(ism->pdev);
213 u64 req = ZPCI_CREATE_REQ(zdev->fh, 2, 8);
214
215 while (len > 0) {
216 __zpci_load(data, req, offset);
217 offset += 8;
218 data += 8;
219 len -= 8;
220 }
221}
222
223static inline void __ism_write_cmd(struct ism_dev *ism, void *data,
224 unsigned long offset, unsigned long len)
225{
226 struct zpci_dev *zdev = to_zpci(ism->pdev);
227 u64 req = ZPCI_CREATE_REQ(zdev->fh, 2, len);
228
229 if (len)
230 __zpci_store_block(data, req, offset);
231}
232
233static inline int __ism_move(struct ism_dev *ism, u64 dmb_req, void *data,
234 unsigned int size)
235{
236 struct zpci_dev *zdev = to_zpci(ism->pdev);
237 u64 req = ZPCI_CREATE_REQ(zdev->fh, 0, size);
238
239 return __zpci_store_block(data, req, dmb_req);
240}
241
242#endif
243
