1 /* SPDX-License-Identifier: BSD-3-Clause
3 * Copyright 2016,2018-2019 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
;
119 /* Only if the log level has been set to Debugging, print list */
120 if (rte_log_can_log(dpaa2_logtype_bus
, RTE_LOG_DEBUG
)) {
121 DPAA2_BUS_LOG(DEBUG
, "List of devices scanned on bus:");
122 TAILQ_FOREACH(dev
, &rte_fslmc_bus
.device_list
, next
) {
123 DPAA2_BUS_LOG(DEBUG
, "\t\t%s", dev
->device
.name
);
129 scan_one_fslmc_device(char *dev_name
)
131 char *dup_dev_name
, *t_ptr
;
132 struct rte_dpaa2_device
*dev
= NULL
;
138 /* Ignore the Container name itself */
139 if (!strncmp("dprc", dev_name
, 4))
142 /* Creating a temporary copy to perform cut-parse over string */
143 dup_dev_name
= strdup(dev_name
);
145 DPAA2_BUS_ERR("Unable to allocate device name memory");
149 /* For all other devices, we allocate rte_dpaa2_device.
150 * For those devices where there is no driver, probe would release
151 * the memory associated with the rte_dpaa2_device after necessary
154 dev
= calloc(1, sizeof(struct rte_dpaa2_device
));
156 DPAA2_BUS_ERR("Unable to allocate device object");
161 dev
->device
.bus
= &rte_fslmc_bus
.bus
;
163 /* Parse the device name and ID */
164 t_ptr
= strtok(dup_dev_name
, ".");
166 DPAA2_BUS_ERR("Invalid device found: (%s)", dup_dev_name
);
170 if (!strncmp("dpni", t_ptr
, 4))
171 dev
->dev_type
= DPAA2_ETH
;
172 else if (!strncmp("dpseci", t_ptr
, 6))
173 dev
->dev_type
= DPAA2_CRYPTO
;
174 else if (!strncmp("dpcon", t_ptr
, 5))
175 dev
->dev_type
= DPAA2_CON
;
176 else if (!strncmp("dpbp", t_ptr
, 4))
177 dev
->dev_type
= DPAA2_BPOOL
;
178 else if (!strncmp("dpio", t_ptr
, 4))
179 dev
->dev_type
= DPAA2_IO
;
180 else if (!strncmp("dpci", t_ptr
, 4))
181 dev
->dev_type
= DPAA2_CI
;
182 else if (!strncmp("dpmcp", t_ptr
, 5))
183 dev
->dev_type
= DPAA2_MPORTAL
;
184 else if (!strncmp("dpdmai", t_ptr
, 6))
185 dev
->dev_type
= DPAA2_QDMA
;
186 else if (!strncmp("dpdmux", t_ptr
, 6))
187 dev
->dev_type
= DPAA2_MUX
;
188 else if (!strncmp("dprtc", t_ptr
, 5))
189 dev
->dev_type
= DPAA2_DPRTC
;
191 dev
->dev_type
= DPAA2_UNKNOWN
;
193 t_ptr
= strtok(NULL
, ".");
195 DPAA2_BUS_ERR("Skipping invalid device (%s)", dup_dev_name
);
200 sscanf(t_ptr
, "%hu", &dev
->object_id
);
201 dev
->device
.name
= strdup(dev_name
);
202 if (!dev
->device
.name
) {
203 DPAA2_BUS_ERR("Unable to clone device name. Out of memory");
207 dev
->device
.devargs
= fslmc_devargs_lookup(dev
);
209 /* Update the device found into the device_count table */
210 rte_fslmc_bus
.device_count
[dev
->dev_type
]++;
212 /* Add device in the fslmc device list */
213 insert_in_device_list(dev
);
215 /* Don't need the duplicated device filesystem entry anymore */
229 rte_fslmc_parse(const char *name
, void *addr
)
234 uint8_t sep_exists
= 0;
237 DPAA2_BUS_DEBUG("Parsing dev=(%s)", name
);
239 /* There are multiple ways this can be called, with bus:dev, name=dev
240 * or just dev. In all cases, the 'addr' is actually a string.
242 sep
= strchr(name
, ':');
245 sep
= strchr(name
, '=');
253 /* Check if starting part if either of 'fslmc:' or 'name=', separator
257 /* If either of "fslmc" or "name" are starting part */
258 if (!strncmp(name
, RTE_STR(FSLMC_BUS_NAME
),
259 strlen(RTE_STR(FSLMC_BUS_NAME
))) ||
260 (!strncmp(name
, "name", strlen("name")))) {
263 DPAA2_BUS_DEBUG("Invalid device for matching (%s).",
272 /* Validate device name */
273 if (strncmp("dpni", sep
, 4) &&
274 strncmp("dpseci", sep
, 6) &&
275 strncmp("dpcon", sep
, 5) &&
276 strncmp("dpbp", sep
, 4) &&
277 strncmp("dpio", sep
, 4) &&
278 strncmp("dpci", sep
, 4) &&
279 strncmp("dpmcp", sep
, 5) &&
280 strncmp("dpdmai", sep
, 6) &&
281 strncmp("dpdmux", sep
, 6)) {
282 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
);
306 int device_count
= 0;
307 char fslmc_dirpath
[PATH_MAX
];
309 struct dirent
*entry
;
310 static int process_once
;
314 DPAA2_BUS_DEBUG("Fslmc bus already scanned. Not rescanning");
319 ret
= fslmc_get_container_group(&groupid
);
323 /* Scan devices on the group */
324 sprintf(fslmc_dirpath
, "%s/%s", SYSFS_FSL_MC_DEVICES
, fslmc_container
);
325 dir
= opendir(fslmc_dirpath
);
327 DPAA2_BUS_ERR("Unable to open VFIO group directory");
331 while ((entry
= readdir(dir
)) != NULL
) {
332 if (entry
->d_name
[0] == '.' || entry
->d_type
!= DT_DIR
)
335 ret
= scan_one_fslmc_device(entry
->d_name
);
337 /* Error in parsing directory - exit gracefully */
338 goto scan_fail_cleanup
;
345 DPAA2_BUS_INFO("FSLMC Bus scan completed");
346 /* If debugging is enabled, device list is dumped to log output */
354 /* Remove all devices in the list */
355 cleanup_fslmc_device_list();
357 DPAA2_BUS_DEBUG("FSLMC Bus Not Available. Skipping (%d)", ret
);
358 /* Irrespective of failure, scan only return success */
363 rte_fslmc_match(struct rte_dpaa2_driver
*dpaa2_drv
,
364 struct rte_dpaa2_device
*dpaa2_dev
)
366 if (dpaa2_drv
->drv_type
== dpaa2_dev
->dev_type
)
373 rte_fslmc_probe(void)
378 struct rte_dpaa2_device
*dev
;
379 struct rte_dpaa2_driver
*drv
;
381 if (TAILQ_EMPTY(&rte_fslmc_bus
.device_list
))
384 ret
= fslmc_vfio_setup_group();
386 DPAA2_BUS_ERR("Unable to setup VFIO %d", ret
);
390 /* Map existing segments as well as, in case of hotpluggable memory,
391 * install callback handler.
393 if (rte_eal_process_type() == RTE_PROC_PRIMARY
) {
394 ret
= rte_fslmc_vfio_dmamap();
396 DPAA2_BUS_ERR("Unable to DMA map existing VAs: (%d)",
398 /* Not continuing ahead */
399 DPAA2_BUS_ERR("FSLMC VFIO Mapping failed");
404 ret
= fslmc_vfio_process_group();
406 DPAA2_BUS_ERR("Unable to setup devices %d", ret
);
410 probe_all
= rte_fslmc_bus
.bus
.conf
.scan_mode
!= RTE_BUS_SCAN_WHITELIST
;
412 /* In case of PA, the FD addresses returned by qbman APIs are physical
413 * addresses, which need conversion into equivalent VA address for
414 * rte_mbuf. For that, a table (a serial array, in memory) is used to
415 * increase translation efficiency.
416 * This has to be done before probe as some device initialization
417 * (during) probe allocate memory (dpaa2_sec) which needs to be pinned
420 * Error is ignored as relevant logs are handled within dpaax and
421 * handling for unavailable dpaax table too is transparent to caller.
423 * And, the IOVA table is only applicable in case of PA mode.
425 if (rte_eal_iova_mode() == RTE_IOVA_PA
)
426 dpaax_iova_table_populate();
428 TAILQ_FOREACH(dev
, &rte_fslmc_bus
.device_list
, next
) {
429 TAILQ_FOREACH(drv
, &rte_fslmc_bus
.driver_list
, next
) {
430 ret
= rte_fslmc_match(drv
, dev
);
437 if (rte_dev_is_probed(&dev
->device
))
440 if (dev
->device
.devargs
&&
441 dev
->device
.devargs
->policy
== RTE_DEV_BLACKLISTED
) {
442 DPAA2_BUS_LOG(DEBUG
, "%s Blacklisted, skipping",
448 (dev
->device
.devargs
&&
449 dev
->device
.devargs
->policy
==
450 RTE_DEV_WHITELISTED
)) {
451 ret
= drv
->probe(drv
, dev
);
453 DPAA2_BUS_ERR("Unable to probe");
456 dev
->device
.driver
= &drv
->driver
;
463 if (rte_eal_iova_mode() == RTE_IOVA_VA
)
469 static struct rte_device
*
470 rte_fslmc_find_device(const struct rte_device
*start
, rte_dev_cmp_t cmp
,
473 const struct rte_dpaa2_device
*dstart
;
474 struct rte_dpaa2_device
*dev
;
476 DPAA2_BUS_DEBUG("Finding a device named %s\n", (const char *)data
);
478 /* find_device is always called with an opaque object which should be
479 * passed along to the 'cmp' function iterating over all device obj
484 dstart
= RTE_DEV_TO_FSLMC_CONST(start
);
485 dev
= TAILQ_NEXT(dstart
, next
);
487 dev
= TAILQ_FIRST(&rte_fslmc_bus
.device_list
);
489 while (dev
!= NULL
) {
490 if (cmp(&dev
->device
, data
) == 0) {
491 DPAA2_BUS_DEBUG("Found device (%s)\n",
495 dev
= TAILQ_NEXT(dev
, next
);
501 /*register a fslmc bus based dpaa2 driver */
503 rte_fslmc_driver_register(struct rte_dpaa2_driver
*driver
)
507 TAILQ_INSERT_TAIL(&rte_fslmc_bus
.driver_list
, driver
, next
);
508 /* Update Bus references */
509 driver
->fslmc_bus
= &rte_fslmc_bus
;
512 /*un-register a fslmc bus based dpaa2 driver */
514 rte_fslmc_driver_unregister(struct rte_dpaa2_driver
*driver
)
516 struct rte_fslmc_bus
*fslmc_bus
;
518 fslmc_bus
= driver
->fslmc_bus
;
520 /* Cleanup the PA->VA Translation table; From whereever this function
523 if (rte_eal_iova_mode() == RTE_IOVA_PA
)
524 dpaax_iova_table_depopulate();
526 TAILQ_REMOVE(&fslmc_bus
->driver_list
, driver
, next
);
527 /* Update Bus references */
528 driver
->fslmc_bus
= NULL
;
532 * All device has iova as va
535 fslmc_all_device_support_iova(void)
538 struct rte_dpaa2_device
*dev
;
539 struct rte_dpaa2_driver
*drv
;
541 TAILQ_FOREACH(dev
, &rte_fslmc_bus
.device_list
, next
) {
542 TAILQ_FOREACH(drv
, &rte_fslmc_bus
.driver_list
, next
) {
543 ret
= rte_fslmc_match(drv
, dev
);
546 /* if the driver is not supporting IOVA */
547 if (!(drv
->drv_flags
& RTE_DPAA2_DRV_IOVA_AS_VA
))
555 * Get iommu class of DPAA2 devices on the bus.
557 static enum rte_iova_mode
558 rte_dpaa2_get_iommu_class(void)
560 bool is_vfio_noiommu_enabled
= 1;
563 if (TAILQ_EMPTY(&rte_fslmc_bus
.device_list
))
566 #ifdef RTE_LIBRTE_DPAA2_USE_PHYS_IOVA
570 /* check if all devices on the bus support Virtual addressing or not */
571 has_iova_va
= fslmc_all_device_support_iova();
574 is_vfio_noiommu_enabled
= rte_vfio_noiommu_is_enabled() == true ?
578 if (has_iova_va
&& !is_vfio_noiommu_enabled
)
585 fslmc_bus_plug(struct rte_device
*dev __rte_unused
)
587 /* No operation is performed while plugging the device */
592 fslmc_bus_unplug(struct rte_device
*dev __rte_unused
)
594 /* No operation is performed while unplugging the device */
599 fslmc_bus_dev_iterate(const void *start
, const char *str
,
600 const struct rte_dev_iterator
*it __rte_unused
)
602 const struct rte_dpaa2_device
*dstart
;
603 struct rte_dpaa2_device
*dev
;
604 char *dup
, *dev_name
= NULL
;
606 /* Expectation is that device would be name=device_name */
607 if (strncmp(str
, "name=", 5) != 0) {
608 DPAA2_BUS_DEBUG("Invalid device string (%s)\n", str
);
612 /* Now that name=device_name format is available, split */
614 dev_name
= dup
+ strlen("name=");
617 dstart
= RTE_DEV_TO_FSLMC_CONST(start
);
618 dev
= TAILQ_NEXT(dstart
, next
);
620 dev
= TAILQ_FIRST(&rte_fslmc_bus
.device_list
);
623 while (dev
!= NULL
) {
624 if (strcmp(dev
->device
.name
, dev_name
) == 0) {
628 dev
= TAILQ_NEXT(dev
, next
);
635 struct rte_fslmc_bus rte_fslmc_bus
= {
637 .scan
= rte_fslmc_scan
,
638 .probe
= rte_fslmc_probe
,
639 .parse
= rte_fslmc_parse
,
640 .find_device
= rte_fslmc_find_device
,
641 .get_iommu_class
= rte_dpaa2_get_iommu_class
,
642 .plug
= fslmc_bus_plug
,
643 .unplug
= fslmc_bus_unplug
,
644 .dev_iterate
= fslmc_bus_dev_iterate
,
646 .device_list
= TAILQ_HEAD_INITIALIZER(rte_fslmc_bus
.device_list
),
647 .driver_list
= TAILQ_HEAD_INITIALIZER(rte_fslmc_bus
.driver_list
),
651 RTE_REGISTER_BUS(FSLMC_BUS_NAME
, rte_fslmc_bus
.bus
);
653 RTE_INIT(fslmc_init_log
)
656 dpaa2_logtype_bus
= rte_log_register("bus.fslmc");
657 if (dpaa2_logtype_bus
>= 0)
658 rte_log_set_level(dpaa2_logtype_bus
, RTE_LOG_NOTICE
);