1 /* SPDX-License-Identifier: BSD-3-Clause
3 * Copyright 2016,2018 NXP
13 #include <rte_malloc.h>
14 #include <rte_devargs.h>
15 #include <rte_memcpy.h>
16 #include <rte_ethdev_driver.h>
18 #include <rte_fslmc.h>
19 #include <fslmc_vfio.h>
20 #include "fslmc_logs.h"
22 #include <dpaax_iova_table.h>
24 int dpaa2_logtype_bus;
26 #define VFIO_IOMMU_GROUP_PATH "/sys/kernel/iommu_groups"
27 #define FSLMC_BUS_NAME fslmc
29 struct rte_fslmc_bus rte_fslmc_bus;
30 uint8_t dpaa2_virt_mode;
33 rte_fslmc_get_device_count(enum rte_dpaa2_dev_type device_type)
35 if (device_type >= DPAA2_DEVTYPE_MAX)
37 return rte_fslmc_bus.device_count[device_type];
40 RTE_DEFINE_PER_LCORE(struct dpaa2_portal_dqrr, dpaa2_held_bufs);
43 cleanup_fslmc_device_list(void)
45 struct rte_dpaa2_device *dev;
46 struct rte_dpaa2_device *t_dev;
48 TAILQ_FOREACH_SAFE(dev, &rte_fslmc_bus.device_list, next, t_dev) {
49 TAILQ_REMOVE(&rte_fslmc_bus.device_list, dev, next);
56 compare_dpaa2_devname(struct rte_dpaa2_device *dev1,
57 struct rte_dpaa2_device *dev2)
61 if (dev1->dev_type > dev2->dev_type) {
63 } else if (dev1->dev_type < dev2->dev_type) {
66 /* Check the ID as types match */
67 if (dev1->object_id > dev2->object_id)
69 else if (dev1->object_id < dev2->object_id)
72 comp = 0; /* Duplicate device name */
79 insert_in_device_list(struct rte_dpaa2_device *newdev)
81 int comp, inserted = 0;
82 struct rte_dpaa2_device *dev = NULL;
83 struct rte_dpaa2_device *tdev = NULL;
85 TAILQ_FOREACH_SAFE(dev, &rte_fslmc_bus.device_list, next, tdev) {
86 comp = compare_dpaa2_devname(newdev, dev);
88 TAILQ_INSERT_BEFORE(dev, newdev, next);
95 TAILQ_INSERT_TAIL(&rte_fslmc_bus.device_list, newdev, next);
98 static struct rte_devargs *
99 fslmc_devargs_lookup(struct rte_dpaa2_device *dev)
101 struct rte_devargs *devargs;
104 RTE_EAL_DEVARGS_FOREACH("fslmc", devargs) {
105 devargs->bus->parse(devargs->name, &dev_name);
106 if (strcmp(dev_name, dev->device.name) == 0) {
107 DPAA2_BUS_INFO("**Devargs matched %s", dev_name);
115 dump_device_list(void)
117 struct rte_dpaa2_device *dev;
118 uint32_t global_log_level;
121 /* Only if the log level has been set to Debugging, print list */
122 global_log_level = rte_log_get_global_level();
123 local_log_level = rte_log_get_level(dpaa2_logtype_bus);
124 if (global_log_level == RTE_LOG_DEBUG ||
125 local_log_level == RTE_LOG_DEBUG) {
126 DPAA2_BUS_LOG(DEBUG, "List of devices scanned on bus:");
127 TAILQ_FOREACH(dev, &rte_fslmc_bus.device_list, next) {
128 DPAA2_BUS_LOG(DEBUG, "\t\t%s", dev->device.name);
134 scan_one_fslmc_device(char *dev_name)
136 char *dup_dev_name, *t_ptr;
137 struct rte_dpaa2_device *dev = NULL;
143 /* Ignore the Container name itself */
144 if (!strncmp("dprc", dev_name, 4))
147 /* Creating a temporary copy to perform cut-parse over string */
148 dup_dev_name = strdup(dev_name);
150 DPAA2_BUS_ERR("Unable to allocate device name memory");
154 /* For all other devices, we allocate rte_dpaa2_device.
155 * For those devices where there is no driver, probe would release
156 * the memory associated with the rte_dpaa2_device after necessary
159 dev = calloc(1, sizeof(struct rte_dpaa2_device));
161 DPAA2_BUS_ERR("Unable to allocate device object");
166 dev->device.bus = &rte_fslmc_bus.bus;
168 /* Parse the device name and ID */
169 t_ptr = strtok(dup_dev_name, ".");
171 DPAA2_BUS_ERR("Invalid device found: (%s)", dup_dev_name);
175 if (!strncmp("dpni", t_ptr, 4))
176 dev->dev_type = DPAA2_ETH;
177 else if (!strncmp("dpseci", t_ptr, 6))
178 dev->dev_type = DPAA2_CRYPTO;
179 else if (!strncmp("dpcon", t_ptr, 5))
180 dev->dev_type = DPAA2_CON;
181 else if (!strncmp("dpbp", t_ptr, 4))
182 dev->dev_type = DPAA2_BPOOL;
183 else if (!strncmp("dpio", t_ptr, 4))
184 dev->dev_type = DPAA2_IO;
185 else if (!strncmp("dpci", t_ptr, 4))
186 dev->dev_type = DPAA2_CI;
187 else if (!strncmp("dpmcp", t_ptr, 5))
188 dev->dev_type = DPAA2_MPORTAL;
189 else if (!strncmp("dpdmai", t_ptr, 6))
190 dev->dev_type = DPAA2_QDMA;
191 else if (!strncmp("dpdmux", t_ptr, 6))
192 dev->dev_type = DPAA2_MUX;
194 dev->dev_type = DPAA2_UNKNOWN;
196 t_ptr = strtok(NULL, ".");
198 DPAA2_BUS_ERR("Skipping invalid device (%s)", dup_dev_name);
203 sscanf(t_ptr, "%hu", &dev->object_id);
204 dev->device.name = strdup(dev_name);
205 if (!dev->device.name) {
206 DPAA2_BUS_ERR("Unable to clone device name. Out of memory");
210 dev->device.devargs = fslmc_devargs_lookup(dev);
212 /* Update the device found into the device_count table */
213 rte_fslmc_bus.device_count[dev->dev_type]++;
215 /* Add device in the fslmc device list */
216 insert_in_device_list(dev);
218 /* Don't need the duplicated device filesystem entry anymore */
232 rte_fslmc_parse(const char *name, void *addr)
237 uint8_t sep_exists = 0;
239 DPAA2_BUS_DEBUG("Parsing dev=(%s)", name);
241 /* There are multiple ways this can be called, with bus:dev, name=dev
242 * or just dev. In all cases, the 'addr' is actually a string.
244 sep = strchr(name, ':');
247 sep = strchr(name, '=');
255 /* Check if starting part if either of 'fslmc:' or 'name=', separator
259 /* If either of "fslmc" or "name" are starting part */
260 if (!strncmp(name, RTE_STR(FSLMC_BUS_NAME),
261 strlen(RTE_STR(FSLMC_BUS_NAME))) ||
262 (!strncmp(name, "name", strlen("name")))) {
265 DPAA2_BUS_DEBUG("Invalid device for matching (%s).",
273 /* Validate device name */
274 if (strncmp("dpni", sep, 4) &&
275 strncmp("dpseci", sep, 6) &&
276 strncmp("dpcon", sep, 5) &&
277 strncmp("dpbp", sep, 4) &&
278 strncmp("dpio", sep, 4) &&
279 strncmp("dpci", sep, 4) &&
280 strncmp("dpmcp", sep, 5) &&
281 strncmp("dpdmai", sep, 6) &&
282 strncmp("dpdmux", sep, 6)) {
283 DPAA2_BUS_DEBUG("Unknown or unsupported device (%s)", sep);
287 t_ptr = strchr(sep, '.');
288 if (!t_ptr || sscanf(t_ptr + 1, "%hu", &dev_id) != 1) {
289 DPAA2_BUS_ERR("Missing device id in device name (%s)", sep);
298 if (!sep_exists && sep)
307 int device_count = 0;
308 char fslmc_dirpath[PATH_MAX];
310 struct dirent *entry;
311 static int process_once;
315 DPAA2_BUS_DEBUG("Fslmc bus already scanned. Not rescanning");
320 ret = fslmc_get_container_group(&groupid);
324 /* Scan devices on the group */
325 snprintf(fslmc_dirpath, sizeof(fslmc_dirpath), "%s/%d/devices",
326 VFIO_IOMMU_GROUP_PATH, groupid);
327 dir = opendir(fslmc_dirpath);
329 DPAA2_BUS_ERR("Unable to open VFIO group directory");
333 while ((entry = readdir(dir)) != NULL) {
334 if (entry->d_name[0] == '.' || entry->d_type != DT_LNK)
337 ret = scan_one_fslmc_device(entry->d_name);
339 /* Error in parsing directory - exit gracefully */
340 goto scan_fail_cleanup;
347 DPAA2_BUS_INFO("FSLMC Bus scan completed");
348 /* If debugging is enabled, device list is dumped to log output */
356 /* Remove all devices in the list */
357 cleanup_fslmc_device_list();
359 DPAA2_BUS_DEBUG("FSLMC Bus Not Available. Skipping (%d)", ret);
360 /* Irrespective of failure, scan only return success */
365 rte_fslmc_match(struct rte_dpaa2_driver *dpaa2_drv,
366 struct rte_dpaa2_device *dpaa2_dev)
368 if (dpaa2_drv->drv_type == dpaa2_dev->dev_type)
375 rte_fslmc_probe(void)
380 struct rte_dpaa2_device *dev;
381 struct rte_dpaa2_driver *drv;
383 if (TAILQ_EMPTY(&rte_fslmc_bus.device_list))
386 ret = fslmc_vfio_setup_group();
388 DPAA2_BUS_ERR("Unable to setup VFIO %d", ret);
392 /* Map existing segments as well as, in case of hotpluggable memory,
393 * install callback handler.
395 ret = rte_fslmc_vfio_dmamap();
397 DPAA2_BUS_ERR("Unable to DMA map existing VAs: (%d)", ret);
398 /* Not continuing ahead */
399 DPAA2_BUS_ERR("FSLMC VFIO Mapping failed");
403 ret = fslmc_vfio_process_group();
405 DPAA2_BUS_ERR("Unable to setup devices %d", ret);
409 probe_all = rte_fslmc_bus.bus.conf.scan_mode != RTE_BUS_SCAN_WHITELIST;
411 /* In case of PA, the FD addresses returned by qbman APIs are physical
412 * addresses, which need conversion into equivalent VA address for
413 * rte_mbuf. For that, a table (a serial array, in memory) is used to
414 * increase translation efficiency.
415 * This has to be done before probe as some device initialization
416 * (during) probe allocate memory (dpaa2_sec) which needs to be pinned
419 * Error is ignored as relevant logs are handled within dpaax and
420 * handling for unavailable dpaax table too is transparent to caller.
422 dpaax_iova_table_populate();
424 TAILQ_FOREACH(dev, &rte_fslmc_bus.device_list, next) {
425 TAILQ_FOREACH(drv, &rte_fslmc_bus.driver_list, next) {
426 ret = rte_fslmc_match(drv, dev);
433 if (rte_dev_is_probed(&dev->device))
436 if (dev->device.devargs &&
437 dev->device.devargs->policy == RTE_DEV_BLACKLISTED) {
438 DPAA2_BUS_LOG(DEBUG, "%s Blacklisted, skipping",
444 (dev->device.devargs &&
445 dev->device.devargs->policy ==
446 RTE_DEV_WHITELISTED)) {
447 ret = drv->probe(drv, dev);
449 DPAA2_BUS_ERR("Unable to probe");
452 dev->device.driver = &drv->driver;
459 if (rte_eal_iova_mode() == RTE_IOVA_VA)
465 static struct rte_device *
466 rte_fslmc_find_device(const struct rte_device *start, rte_dev_cmp_t cmp,
469 const struct rte_dpaa2_device *dstart;
470 struct rte_dpaa2_device *dev;
472 DPAA2_BUS_DEBUG("Finding a device named %s\n", (const char *)data);
474 /* find_device is always called with an opaque object which should be
475 * passed along to the 'cmp' function iterating over all device obj
480 dstart = RTE_DEV_TO_FSLMC_CONST(start);
481 dev = TAILQ_NEXT(dstart, next);
483 dev = TAILQ_FIRST(&rte_fslmc_bus.device_list);
485 while (dev != NULL) {
486 if (cmp(&dev->device, data) == 0) {
487 DPAA2_BUS_DEBUG("Found device (%s)\n",
491 dev = TAILQ_NEXT(dev, next);
497 /*register a fslmc bus based dpaa2 driver */
499 rte_fslmc_driver_register(struct rte_dpaa2_driver *driver)
503 TAILQ_INSERT_TAIL(&rte_fslmc_bus.driver_list, driver, next);
504 /* Update Bus references */
505 driver->fslmc_bus = &rte_fslmc_bus;
508 /*un-register a fslmc bus based dpaa2 driver */
510 rte_fslmc_driver_unregister(struct rte_dpaa2_driver *driver)
512 struct rte_fslmc_bus *fslmc_bus;
514 fslmc_bus = driver->fslmc_bus;
516 /* Cleanup the PA->VA Translation table; From whereever this function
519 dpaax_iova_table_depopulate();
521 TAILQ_REMOVE(&fslmc_bus->driver_list, driver, next);
522 /* Update Bus references */
523 driver->fslmc_bus = NULL;
527 * All device has iova as va
530 fslmc_all_device_support_iova(void)
533 struct rte_dpaa2_device *dev;
534 struct rte_dpaa2_driver *drv;
536 TAILQ_FOREACH(dev, &rte_fslmc_bus.device_list, next) {
537 TAILQ_FOREACH(drv, &rte_fslmc_bus.driver_list, next) {
538 ret = rte_fslmc_match(drv, dev);
541 /* if the driver is not supporting IOVA */
542 if (!(drv->drv_flags & RTE_DPAA2_DRV_IOVA_AS_VA))
550 * Get iommu class of DPAA2 devices on the bus.
552 static enum rte_iova_mode
553 rte_dpaa2_get_iommu_class(void)
555 bool is_vfio_noiommu_enabled = 1;
558 if (TAILQ_EMPTY(&rte_fslmc_bus.device_list))
561 #ifdef RTE_LIBRTE_DPAA2_USE_PHYS_IOVA
565 /* check if all devices on the bus support Virtual addressing or not */
566 has_iova_va = fslmc_all_device_support_iova();
569 is_vfio_noiommu_enabled = rte_vfio_noiommu_is_enabled() == true ?
573 if (has_iova_va && !is_vfio_noiommu_enabled)
580 fslmc_bus_plug(struct rte_device *dev __rte_unused)
582 /* No operation is performed while plugging the device */
587 fslmc_bus_unplug(struct rte_device *dev __rte_unused)
589 /* No operation is performed while unplugging the device */
594 fslmc_bus_dev_iterate(const void *start, const char *str,
595 const struct rte_dev_iterator *it __rte_unused)
597 const struct rte_dpaa2_device *dstart;
598 struct rte_dpaa2_device *dev;
599 char *dup, *dev_name = NULL;
601 /* Expectation is that device would be name=device_name */
602 if (strncmp(str, "name=", 5) != 0) {
603 DPAA2_BUS_DEBUG("Invalid device string (%s)\n", str);
607 /* Now that name=device_name format is available, split */
609 dev_name = dup + strlen("name=");
612 dstart = RTE_DEV_TO_FSLMC_CONST(start);
613 dev = TAILQ_NEXT(dstart, next);
615 dev = TAILQ_FIRST(&rte_fslmc_bus.device_list);
618 while (dev != NULL) {
619 if (strcmp(dev->device.name, dev_name) == 0) {
623 dev = TAILQ_NEXT(dev, next);
630 struct rte_fslmc_bus rte_fslmc_bus = {
632 .scan = rte_fslmc_scan,
633 .probe = rte_fslmc_probe,
634 .parse = rte_fslmc_parse,
635 .find_device = rte_fslmc_find_device,
636 .get_iommu_class = rte_dpaa2_get_iommu_class,
637 .plug = fslmc_bus_plug,
638 .unplug = fslmc_bus_unplug,
639 .dev_iterate = fslmc_bus_dev_iterate,
641 .device_list = TAILQ_HEAD_INITIALIZER(rte_fslmc_bus.device_list),
642 .driver_list = TAILQ_HEAD_INITIALIZER(rte_fslmc_bus.driver_list),
646 RTE_REGISTER_BUS(FSLMC_BUS_NAME, rte_fslmc_bus.bus);
648 RTE_INIT(fslmc_init_log)
651 dpaa2_logtype_bus = rte_log_register("bus.fslmc");
652 if (dpaa2_logtype_bus >= 0)
653 rte_log_set_level(dpaa2_logtype_bus, RTE_LOG_NOTICE);