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#define ISM_IDENT_MASK 0x00FFFF 20 21#define ISM_REG_SBA 0x1 22#define ISM_REG_IEQ 0x2 23#define ISM_READ_GID 0x3 24#define ISM_ADD_VLAN_ID 0x4 25#define ISM_DEL_VLAN_ID 0x5 26#define ISM_SET_VLAN 0x6 27#define ISM_RESET_VLAN 0x7 28#define ISM_QUERY_INFO 0x8 29#define ISM_QUERY_RGID 0x9 30#define ISM_REG_DMB 0xA 31#define ISM_UNREG_DMB 0xB 32#define ISM_SIGNAL_IEQ 0xE 33#define ISM_UNREG_SBA 0x11 34#define ISM_UNREG_IEQ 0x12 35 36struct ism_req_hdr { 37 u32 cmd; 38 u16 : 16; 39 u16 len; 40}; 41 42struct ism_resp_hdr { 43 u32 cmd; 44 u16 ret; 45 u16 len; 46}; 47 48union ism_reg_sba { 49 struct { 50 struct ism_req_hdr hdr; 51 u64 sba; 52 } request; 53 struct { 54 struct ism_resp_hdr hdr; 55 } response; 56} __aligned(16); 57 58union ism_reg_ieq { 59 struct { 60 struct ism_req_hdr hdr; 61 u64 ieq; 62 u64 len; 63 } request; 64 struct { 65 struct ism_resp_hdr hdr; 66 } response; 67} __aligned(16); 68 69union ism_read_gid { 70 struct { 71 struct ism_req_hdr hdr; 72 } request; 73 struct { 74 struct ism_resp_hdr hdr; 75 u64 gid; 76 } response; 77} __aligned(16); 78 79union ism_qi { 80 struct { 81 struct ism_req_hdr hdr; 82 } request; 83 struct { 84 struct ism_resp_hdr hdr; 85 u32 version; 86 u32 max_len; 87 u64 ism_state; 88 u64 my_gid; 89 u64 sba; 90 u64 ieq; 91 u32 ieq_len; 92 u32 : 32; 93 u32 dmbs_owned; 94 u32 dmbs_used; 95 u32 vlan_required; 96 u32 vlan_nr_ids; 97 u16 vlan_id[64]; 98 } response; 99} __aligned(64); 100 101union ism_query_rgid { 102 struct { 103 struct ism_req_hdr hdr; 104 u64 rgid; 105 u32 vlan_valid; 106 u32 vlan_id; 107 } request; 108 struct { 109 struct ism_resp_hdr hdr; 110 } response; 111} __aligned(16); 112 113union ism_reg_dmb { 114 struct { 115 struct ism_req_hdr hdr; 116 u64 dmb; 117 u32 dmb_len; 118 u32 sba_idx; 119 u32 vlan_valid; 120 u32 vlan_id; 121 u64 rgid; 122 } request; 123 struct { 124 struct ism_resp_hdr hdr; 125 u64 dmb_tok; 126 } response; 127} __aligned(32); 128 129union ism_sig_ieq { 130 struct { 131 struct ism_req_hdr hdr; 132 u64 rgid; 133 u32 trigger_irq; 134 u32 event_code; 135 u64 info; 136 } request; 137 struct { 138 struct ism_resp_hdr hdr; 139 } response; 140} __aligned(32); 141 142union ism_unreg_dmb { 143 struct { 144 struct ism_req_hdr hdr; 145 u64 dmb_tok; 146 } request; 147 struct { 148 struct ism_resp_hdr hdr; 149 } response; 150} __aligned(16); 151 152union ism_cmd_simple { 153 struct { 154 struct ism_req_hdr hdr; 155 } request; 156 struct { 157 struct ism_resp_hdr hdr; 158 } response; 159} __aligned(8); 160 161union ism_set_vlan_id { 162 struct { 163 struct ism_req_hdr hdr; 164 u64 vlan_id; 165 } request; 166 struct { 167 struct ism_resp_hdr hdr; 168 } response; 169} __aligned(16); 170 171struct ism_eq_header { 172 u64 idx; 173 u64 ieq_len; 174 u64 entry_len; 175 u64 : 64; 176}; 177 178struct ism_eq { 179 struct ism_eq_header header; 180 struct ism_event entry[15]; 181}; 182 183struct ism_sba { 184 u32 s : 1; /* summary bit */ 185 u32 e : 1; /* event bit */ 186 u32 : 30; 187 u32 dmb_bits[ISM_NR_DMBS / 32]; 188 u32 reserved[3]; 189 u16 dmbe_mask[ISM_NR_DMBS]; 190}; 191 192#define ISM_CREATE_REQ(dmb, idx, sf, offset) \ 193 ((dmb) | (idx) << 24 | (sf) << 23 | (offset)) 194 195struct ism_systemeid { 196 u8 seid_string[24]; 197 u8 serial_number[4]; 198 u8 type[4]; 199}; 200 201static inline void __ism_read_cmd(struct ism_dev *ism, void *data, 202 unsigned long offset, unsigned long len) 203{ 204 struct zpci_dev *zdev = to_zpci(ism->pdev); 205 u64 req = ZPCI_CREATE_REQ(zdev->fh, 2, 8); 206 207 while (len > 0) { 208 __zpci_load(data, req, offset); 209 offset += 8; 210 data += 8; 211 len -= 8; 212 } 213} 214 215static inline void __ism_write_cmd(struct ism_dev *ism, void *data, 216 unsigned long offset, unsigned long len) 217{ 218 struct zpci_dev *zdev = to_zpci(ism->pdev); 219 u64 req = ZPCI_CREATE_REQ(zdev->fh, 2, len); 220 221 if (len) 222 __zpci_store_block(data, req, offset); 223} 224 225static inline int __ism_move(struct ism_dev *ism, u64 dmb_req, void *data, 226 unsigned int size) 227{ 228 struct zpci_dev *zdev = to_zpci(ism->pdev); 229 u64 req = ZPCI_CREATE_REQ(zdev->fh, 0, size); 230 231 return __zpci_store_block(data, req, dmb_req); 232} 233 234#endif /* S390_ISM_H */ 235