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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 | // SPDX-License-Identifier: GPL-2.0-only /* Copyright(c) 2023 Intel Corporation */ #define dev_fmt(fmt) "RateLimiting: " fmt #include <linux/dev_printk.h> #include <linux/pci.h> #include <linux/sysfs.h> #include <linux/types.h> #include "adf_common_drv.h" #include "adf_rl.h" #include "adf_sysfs_rl.h" #define GET_RL_STRUCT(accel_dev) ((accel_dev)->rate_limiting->user_input) enum rl_ops { ADD, UPDATE, RM, RM_ALL, GET, }; enum rl_params { RP_MASK, ID, CIR, PIR, SRV, CAP_REM_SRV, }; static const char *const rl_services[] = { [ADF_SVC_ASYM] = "asym", [ADF_SVC_SYM] = "sym", [ADF_SVC_DC] = "dc", }; static const char *const rl_operations[] = { [ADD] = "add", [UPDATE] = "update", [RM] = "rm", [RM_ALL] = "rm_all", [GET] = "get", }; static int set_param_u(struct device *dev, enum rl_params param, u64 set) { struct adf_rl_interface_data *data; struct adf_accel_dev *accel_dev; int ret = 0; accel_dev = adf_devmgr_pci_to_accel_dev(to_pci_dev(dev)); if (!accel_dev) return -EINVAL; data = &GET_RL_STRUCT(accel_dev); down_write(&data->lock); switch (param) { case RP_MASK: data->input.rp_mask = set; break; case CIR: data->input.cir = set; break; case PIR: data->input.pir = set; break; case SRV: data->input.srv = set; break; case CAP_REM_SRV: data->cap_rem_srv = set; break; default: ret = -EINVAL; break; } up_write(&data->lock); return ret; } static int set_param_s(struct device *dev, enum rl_params param, int set) { struct adf_rl_interface_data *data; struct adf_accel_dev *accel_dev; accel_dev = adf_devmgr_pci_to_accel_dev(to_pci_dev(dev)); if (!accel_dev || param != ID) return -EINVAL; data = &GET_RL_STRUCT(accel_dev); down_write(&data->lock); data->input.sla_id = set; up_write(&data->lock); return 0; } static int get_param_u(struct device *dev, enum rl_params param, u64 *get) { struct adf_rl_interface_data *data; struct adf_accel_dev *accel_dev; int ret = 0; accel_dev = adf_devmgr_pci_to_accel_dev(to_pci_dev(dev)); if (!accel_dev) return -EINVAL; data = &GET_RL_STRUCT(accel_dev); down_read(&data->lock); switch (param) { case RP_MASK: *get = data->input.rp_mask; break; case CIR: *get = data->input.cir; break; case PIR: *get = data->input.pir; break; case SRV: *get = data->input.srv; break; default: ret = -EINVAL; } up_read(&data->lock); return ret; } static int get_param_s(struct device *dev, enum rl_params param) { struct adf_rl_interface_data *data; struct adf_accel_dev *accel_dev; int ret = 0; accel_dev = adf_devmgr_pci_to_accel_dev(to_pci_dev(dev)); if (!accel_dev) return -EINVAL; data = &GET_RL_STRUCT(accel_dev); down_read(&data->lock); if (param == ID) ret = data->input.sla_id; up_read(&data->lock); return ret; } static ssize_t rp_show(struct device *dev, struct device_attribute *attr, char *buf) { int ret; u64 get; ret = get_param_u(dev, RP_MASK, &get); if (ret) return ret; return sysfs_emit(buf, "%#llx\n", get); } static ssize_t rp_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { int err; u64 val; err = kstrtou64(buf, 16, &val); if (err) return err; err = set_param_u(dev, RP_MASK, val); if (err) return err; return count; } static DEVICE_ATTR_RW(rp); static ssize_t id_show(struct device *dev, struct device_attribute *attr, char *buf) { return sysfs_emit(buf, "%d\n", get_param_s(dev, ID)); } static ssize_t id_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { int err; int val; err = kstrtoint(buf, 10, &val); if (err) return err; err = set_param_s(dev, ID, val); if (err) return err; return count; } static DEVICE_ATTR_RW(id); static ssize_t cir_show(struct device *dev, struct device_attribute *attr, char *buf) { int ret; u64 get; ret = get_param_u(dev, CIR, &get); if (ret) return ret; return sysfs_emit(buf, "%llu\n", get); } static ssize_t cir_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { unsigned int val; int err; err = kstrtouint(buf, 10, &val); if (err) return err; err = set_param_u(dev, CIR, val); if (err) return err; return count; } static DEVICE_ATTR_RW(cir); static ssize_t pir_show(struct device *dev, struct device_attribute *attr, char *buf) { int ret; u64 get; ret = get_param_u(dev, PIR, &get); if (ret) return ret; return sysfs_emit(buf, "%llu\n", get); } static ssize_t pir_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { unsigned int val; int err; err = kstrtouint(buf, 10, &val); if (err) return err; err = set_param_u(dev, PIR, val); if (err) return err; return count; } static DEVICE_ATTR_RW(pir); static ssize_t srv_show(struct device *dev, struct device_attribute *attr, char *buf) { int ret; u64 get; ret = get_param_u(dev, SRV, &get); if (ret) return ret; if (get == ADF_SVC_NONE) return -EINVAL; return sysfs_emit(buf, "%s\n", rl_services[get]); } static ssize_t srv_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { unsigned int val; int ret; ret = sysfs_match_string(rl_services, buf); if (ret < 0) return ret; val = ret; ret = set_param_u(dev, SRV, val); if (ret) return ret; return count; } static DEVICE_ATTR_RW(srv); static ssize_t cap_rem_show(struct device *dev, struct device_attribute *attr, char *buf) { struct adf_rl_interface_data *data; struct adf_accel_dev *accel_dev; int ret, rem_cap; accel_dev = adf_devmgr_pci_to_accel_dev(to_pci_dev(dev)); if (!accel_dev) return -EINVAL; data = &GET_RL_STRUCT(accel_dev); down_read(&data->lock); rem_cap = adf_rl_get_capability_remaining(accel_dev, data->cap_rem_srv, RL_SLA_EMPTY_ID); up_read(&data->lock); if (rem_cap < 0) return rem_cap; ret = sysfs_emit(buf, "%u\n", rem_cap); return ret; } static ssize_t cap_rem_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { unsigned int val; int ret; ret = sysfs_match_string(rl_services, buf); if (ret < 0) return ret; val = ret; ret = set_param_u(dev, CAP_REM_SRV, val); if (ret) return ret; return count; } static DEVICE_ATTR_RW(cap_rem); static ssize_t sla_op_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct adf_rl_interface_data *data; struct adf_accel_dev *accel_dev; int ret; accel_dev = adf_devmgr_pci_to_accel_dev(to_pci_dev(dev)); if (!accel_dev) return -EINVAL; data = &GET_RL_STRUCT(accel_dev); ret = sysfs_match_string(rl_operations, buf); if (ret < 0) return ret; down_write(&data->lock); switch (ret) { case ADD: data->input.parent_id = RL_PARENT_DEFAULT_ID; data->input.type = RL_LEAF; data->input.sla_id = 0; ret = adf_rl_add_sla(accel_dev, &data->input); if (ret) goto err_free_lock; break; case UPDATE: ret = adf_rl_update_sla(accel_dev, &data->input); if (ret) goto err_free_lock; break; case RM: ret = adf_rl_remove_sla(accel_dev, data->input.sla_id); if (ret) goto err_free_lock; break; case RM_ALL: adf_rl_remove_sla_all(accel_dev, false); break; case GET: ret = adf_rl_get_sla(accel_dev, &data->input); if (ret) goto err_free_lock; break; default: ret = -EINVAL; goto err_free_lock; } up_write(&data->lock); return count; err_free_lock: up_write(&data->lock); return ret; } static DEVICE_ATTR_WO(sla_op); static struct attribute *qat_rl_attrs[] = { &dev_attr_rp.attr, &dev_attr_id.attr, &dev_attr_cir.attr, &dev_attr_pir.attr, &dev_attr_srv.attr, &dev_attr_cap_rem.attr, &dev_attr_sla_op.attr, NULL, }; static struct attribute_group qat_rl_group = { .attrs = qat_rl_attrs, .name = "qat_rl", }; int adf_sysfs_rl_add(struct adf_accel_dev *accel_dev) { struct adf_rl_interface_data *data; int ret; data = &GET_RL_STRUCT(accel_dev); ret = device_add_group(&GET_DEV(accel_dev), &qat_rl_group); if (ret) dev_err(&GET_DEV(accel_dev), "Failed to create qat_rl attribute group\n"); data->cap_rem_srv = ADF_SVC_NONE; data->input.srv = ADF_SVC_NONE; return ret; } void adf_sysfs_rl_rm(struct adf_accel_dev *accel_dev) { device_remove_group(&GET_DEV(accel_dev), &qat_rl_group); } |