1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB 2 /* 3 * Copyright (c) 2017-2020, Mellanox Technologies inc. All rights reserved. 4 */ 5 6 #include "cmd.h" 7 8 int mlx5_cmd_dump_fill_mkey(struct mlx5_core_dev *dev, u32 *mkey) 9 { 10 u32 out[MLX5_ST_SZ_DW(query_special_contexts_out)] = {}; 11 u32 in[MLX5_ST_SZ_DW(query_special_contexts_in)] = {}; 12 int err; 13 14 MLX5_SET(query_special_contexts_in, in, opcode, 15 MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS); 16 err = mlx5_cmd_exec_inout(dev, query_special_contexts, in, out); 17 if (!err) 18 *mkey = MLX5_GET(query_special_contexts_out, out, 19 dump_fill_mkey); 20 return err; 21 } 22 23 int mlx5_cmd_null_mkey(struct mlx5_core_dev *dev, u32 *null_mkey) 24 { 25 u32 out[MLX5_ST_SZ_DW(query_special_contexts_out)] = {}; 26 u32 in[MLX5_ST_SZ_DW(query_special_contexts_in)] = {}; 27 int err; 28 29 MLX5_SET(query_special_contexts_in, in, opcode, 30 MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS); 31 err = mlx5_cmd_exec_inout(dev, query_special_contexts, in, out); 32 if (!err) 33 *null_mkey = MLX5_GET(query_special_contexts_out, out, 34 null_mkey); 35 return err; 36 } 37 38 int mlx5_cmd_query_cong_params(struct mlx5_core_dev *dev, int cong_point, 39 void *out) 40 { 41 u32 in[MLX5_ST_SZ_DW(query_cong_params_in)] = {}; 42 43 MLX5_SET(query_cong_params_in, in, opcode, 44 MLX5_CMD_OP_QUERY_CONG_PARAMS); 45 MLX5_SET(query_cong_params_in, in, cong_protocol, cong_point); 46 47 return mlx5_cmd_exec_inout(dev, query_cong_params, in, out); 48 } 49 50 int mlx5_cmd_alloc_memic(struct mlx5_dm *dm, phys_addr_t *addr, 51 u64 length, u32 alignment) 52 { 53 struct mlx5_core_dev *dev = dm->dev; 54 u64 num_memic_hw_pages = MLX5_CAP_DEV_MEM(dev, memic_bar_size) 55 >> PAGE_SHIFT; 56 u64 hw_start_addr = MLX5_CAP64_DEV_MEM(dev, memic_bar_start_addr); 57 u32 max_alignment = MLX5_CAP_DEV_MEM(dev, log_max_memic_addr_alignment); 58 u32 num_pages = DIV_ROUND_UP(length, PAGE_SIZE); 59 u32 out[MLX5_ST_SZ_DW(alloc_memic_out)] = {}; 60 u32 in[MLX5_ST_SZ_DW(alloc_memic_in)] = {}; 61 u32 mlx5_alignment; 62 u64 page_idx = 0; 63 int ret = 0; 64 65 if (!length || (length & MLX5_MEMIC_ALLOC_SIZE_MASK)) 66 return -EINVAL; 67 68 /* mlx5 device sets alignment as 64*2^driver_value 69 * so normalizing is needed. 70 */ 71 mlx5_alignment = (alignment < MLX5_MEMIC_BASE_ALIGN) ? 0 : 72 alignment - MLX5_MEMIC_BASE_ALIGN; 73 if (mlx5_alignment > max_alignment) 74 return -EINVAL; 75 76 MLX5_SET(alloc_memic_in, in, opcode, MLX5_CMD_OP_ALLOC_MEMIC); 77 MLX5_SET(alloc_memic_in, in, range_size, num_pages * PAGE_SIZE); 78 MLX5_SET(alloc_memic_in, in, memic_size, length); 79 MLX5_SET(alloc_memic_in, in, log_memic_addr_alignment, 80 mlx5_alignment); 81 82 while (page_idx < num_memic_hw_pages) { 83 spin_lock(&dm->lock); 84 page_idx = bitmap_find_next_zero_area(dm->memic_alloc_pages, 85 num_memic_hw_pages, 86 page_idx, 87 num_pages, 0); 88 89 if (page_idx < num_memic_hw_pages) 90 bitmap_set(dm->memic_alloc_pages, 91 page_idx, num_pages); 92 93 spin_unlock(&dm->lock); 94 95 if (page_idx >= num_memic_hw_pages) 96 break; 97 98 MLX5_SET64(alloc_memic_in, in, range_start_addr, 99 hw_start_addr + (page_idx * PAGE_SIZE)); 100 101 ret = mlx5_cmd_exec_inout(dev, alloc_memic, in, out); 102 if (ret) { 103 spin_lock(&dm->lock); 104 bitmap_clear(dm->memic_alloc_pages, 105 page_idx, num_pages); 106 spin_unlock(&dm->lock); 107 108 if (ret == -EAGAIN) { 109 page_idx++; 110 continue; 111 } 112 113 return ret; 114 } 115 116 *addr = dev->bar_addr + 117 MLX5_GET64(alloc_memic_out, out, memic_start_addr); 118 119 return 0; 120 } 121 122 return -ENOMEM; 123 } 124 125 void mlx5_cmd_dealloc_memic(struct mlx5_dm *dm, phys_addr_t addr, u64 length) 126 { 127 struct mlx5_core_dev *dev = dm->dev; 128 u64 hw_start_addr = MLX5_CAP64_DEV_MEM(dev, memic_bar_start_addr); 129 u32 num_pages = DIV_ROUND_UP(length, PAGE_SIZE); 130 u32 in[MLX5_ST_SZ_DW(dealloc_memic_in)] = {}; 131 u64 start_page_idx; 132 int err; 133 134 addr -= dev->bar_addr; 135 start_page_idx = (addr - hw_start_addr) >> PAGE_SHIFT; 136 137 MLX5_SET(dealloc_memic_in, in, opcode, MLX5_CMD_OP_DEALLOC_MEMIC); 138 MLX5_SET64(dealloc_memic_in, in, memic_start_addr, addr); 139 MLX5_SET(dealloc_memic_in, in, memic_size, length); 140 141 err = mlx5_cmd_exec_in(dev, dealloc_memic, in); 142 if (err) 143 return; 144 145 spin_lock(&dm->lock); 146 bitmap_clear(dm->memic_alloc_pages, 147 start_page_idx, num_pages); 148 spin_unlock(&dm->lock); 149 } 150 151 void mlx5_cmd_destroy_tir(struct mlx5_core_dev *dev, u32 tirn, u16 uid) 152 { 153 u32 in[MLX5_ST_SZ_DW(destroy_tir_in)] = {}; 154 155 MLX5_SET(destroy_tir_in, in, opcode, MLX5_CMD_OP_DESTROY_TIR); 156 MLX5_SET(destroy_tir_in, in, tirn, tirn); 157 MLX5_SET(destroy_tir_in, in, uid, uid); 158 mlx5_cmd_exec_in(dev, destroy_tir, in); 159 } 160 161 void mlx5_cmd_destroy_tis(struct mlx5_core_dev *dev, u32 tisn, u16 uid) 162 { 163 u32 in[MLX5_ST_SZ_DW(destroy_tis_in)] = {}; 164 165 MLX5_SET(destroy_tis_in, in, opcode, MLX5_CMD_OP_DESTROY_TIS); 166 MLX5_SET(destroy_tis_in, in, tisn, tisn); 167 MLX5_SET(destroy_tis_in, in, uid, uid); 168 mlx5_cmd_exec_in(dev, destroy_tis, in); 169 } 170 171 void mlx5_cmd_destroy_rqt(struct mlx5_core_dev *dev, u32 rqtn, u16 uid) 172 { 173 u32 in[MLX5_ST_SZ_DW(destroy_rqt_in)] = {}; 174 175 MLX5_SET(destroy_rqt_in, in, opcode, MLX5_CMD_OP_DESTROY_RQT); 176 MLX5_SET(destroy_rqt_in, in, rqtn, rqtn); 177 MLX5_SET(destroy_rqt_in, in, uid, uid); 178 mlx5_cmd_exec_in(dev, destroy_rqt, in); 179 } 180 181 int mlx5_cmd_alloc_transport_domain(struct mlx5_core_dev *dev, u32 *tdn, 182 u16 uid) 183 { 184 u32 in[MLX5_ST_SZ_DW(alloc_transport_domain_in)] = {}; 185 u32 out[MLX5_ST_SZ_DW(alloc_transport_domain_out)] = {}; 186 int err; 187 188 MLX5_SET(alloc_transport_domain_in, in, opcode, 189 MLX5_CMD_OP_ALLOC_TRANSPORT_DOMAIN); 190 MLX5_SET(alloc_transport_domain_in, in, uid, uid); 191 192 err = mlx5_cmd_exec_inout(dev, alloc_transport_domain, in, out); 193 if (!err) 194 *tdn = MLX5_GET(alloc_transport_domain_out, out, 195 transport_domain); 196 197 return err; 198 } 199 200 void mlx5_cmd_dealloc_transport_domain(struct mlx5_core_dev *dev, u32 tdn, 201 u16 uid) 202 { 203 u32 in[MLX5_ST_SZ_DW(dealloc_transport_domain_in)] = {}; 204 205 MLX5_SET(dealloc_transport_domain_in, in, opcode, 206 MLX5_CMD_OP_DEALLOC_TRANSPORT_DOMAIN); 207 MLX5_SET(dealloc_transport_domain_in, in, uid, uid); 208 MLX5_SET(dealloc_transport_domain_in, in, transport_domain, tdn); 209 mlx5_cmd_exec_in(dev, dealloc_transport_domain, in); 210 } 211 212 void mlx5_cmd_dealloc_pd(struct mlx5_core_dev *dev, u32 pdn, u16 uid) 213 { 214 u32 in[MLX5_ST_SZ_DW(dealloc_pd_in)] = {}; 215 216 MLX5_SET(dealloc_pd_in, in, opcode, MLX5_CMD_OP_DEALLOC_PD); 217 MLX5_SET(dealloc_pd_in, in, pd, pdn); 218 MLX5_SET(dealloc_pd_in, in, uid, uid); 219 mlx5_cmd_exec_in(dev, dealloc_pd, in); 220 } 221 222 int mlx5_cmd_attach_mcg(struct mlx5_core_dev *dev, union ib_gid *mgid, 223 u32 qpn, u16 uid) 224 { 225 u32 in[MLX5_ST_SZ_DW(attach_to_mcg_in)] = {}; 226 void *gid; 227 228 MLX5_SET(attach_to_mcg_in, in, opcode, MLX5_CMD_OP_ATTACH_TO_MCG); 229 MLX5_SET(attach_to_mcg_in, in, qpn, qpn); 230 MLX5_SET(attach_to_mcg_in, in, uid, uid); 231 gid = MLX5_ADDR_OF(attach_to_mcg_in, in, multicast_gid); 232 memcpy(gid, mgid, sizeof(*mgid)); 233 return mlx5_cmd_exec_in(dev, attach_to_mcg, in); 234 } 235 236 int mlx5_cmd_detach_mcg(struct mlx5_core_dev *dev, union ib_gid *mgid, 237 u32 qpn, u16 uid) 238 { 239 u32 in[MLX5_ST_SZ_DW(detach_from_mcg_in)] = {}; 240 void *gid; 241 242 MLX5_SET(detach_from_mcg_in, in, opcode, MLX5_CMD_OP_DETACH_FROM_MCG); 243 MLX5_SET(detach_from_mcg_in, in, qpn, qpn); 244 MLX5_SET(detach_from_mcg_in, in, uid, uid); 245 gid = MLX5_ADDR_OF(detach_from_mcg_in, in, multicast_gid); 246 memcpy(gid, mgid, sizeof(*mgid)); 247 return mlx5_cmd_exec_in(dev, detach_from_mcg, in); 248 } 249 250 int mlx5_cmd_xrcd_alloc(struct mlx5_core_dev *dev, u32 *xrcdn, u16 uid) 251 { 252 u32 out[MLX5_ST_SZ_DW(alloc_xrcd_out)] = {}; 253 u32 in[MLX5_ST_SZ_DW(alloc_xrcd_in)] = {}; 254 int err; 255 256 MLX5_SET(alloc_xrcd_in, in, opcode, MLX5_CMD_OP_ALLOC_XRCD); 257 MLX5_SET(alloc_xrcd_in, in, uid, uid); 258 err = mlx5_cmd_exec_inout(dev, alloc_xrcd, in, out); 259 if (!err) 260 *xrcdn = MLX5_GET(alloc_xrcd_out, out, xrcd); 261 return err; 262 } 263 264 int mlx5_cmd_xrcd_dealloc(struct mlx5_core_dev *dev, u32 xrcdn, u16 uid) 265 { 266 u32 in[MLX5_ST_SZ_DW(dealloc_xrcd_in)] = {}; 267 268 MLX5_SET(dealloc_xrcd_in, in, opcode, MLX5_CMD_OP_DEALLOC_XRCD); 269 MLX5_SET(dealloc_xrcd_in, in, xrcd, xrcdn); 270 MLX5_SET(dealloc_xrcd_in, in, uid, uid); 271 return mlx5_cmd_exec_in(dev, dealloc_xrcd, in); 272 } 273 274 int mlx5_cmd_mad_ifc(struct mlx5_core_dev *dev, const void *inb, void *outb, 275 u16 opmod, u8 port) 276 { 277 int outlen = MLX5_ST_SZ_BYTES(mad_ifc_out); 278 int inlen = MLX5_ST_SZ_BYTES(mad_ifc_in); 279 int err = -ENOMEM; 280 void *data; 281 void *resp; 282 u32 *out; 283 u32 *in; 284 285 in = kzalloc(inlen, GFP_KERNEL); 286 out = kzalloc(outlen, GFP_KERNEL); 287 if (!in || !out) 288 goto out; 289 290 MLX5_SET(mad_ifc_in, in, opcode, MLX5_CMD_OP_MAD_IFC); 291 MLX5_SET(mad_ifc_in, in, op_mod, opmod); 292 MLX5_SET(mad_ifc_in, in, port, port); 293 294 data = MLX5_ADDR_OF(mad_ifc_in, in, mad); 295 memcpy(data, inb, MLX5_FLD_SZ_BYTES(mad_ifc_in, mad)); 296 297 err = mlx5_cmd_exec_inout(dev, mad_ifc, in, out); 298 if (err) 299 goto out; 300 301 resp = MLX5_ADDR_OF(mad_ifc_out, out, response_mad_packet); 302 memcpy(outb, resp, 303 MLX5_FLD_SZ_BYTES(mad_ifc_out, response_mad_packet)); 304 305 out: 306 kfree(out); 307 kfree(in); 308 return err; 309 } 310