4 * Copyright (c) 2015-2016 Freescale Semiconductor, Inc. All rights reserved.
5 * Copyright (c) 2016 NXP. All rights reserved.
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15 * the documentation and/or other materials provided with the
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36 #include <sys/types.h>
41 #include <sys/ioctl.h>
43 #include <sys/types.h>
48 #include <sys/eventfd.h>
51 #include <rte_ethdev.h>
52 #include <rte_malloc.h>
53 #include <rte_memcpy.h>
54 #include <rte_string_fns.h>
55 #include <rte_cycles.h>
56 #include <rte_kvargs.h>
58 #include <rte_ethdev.h>
61 #include "rte_fslmc.h"
62 #include "fslmc_vfio.h"
64 #include "portal/dpaa2_hw_pvt.h"
65 #include "portal/dpaa2_hw_dpio.h"
67 #define VFIO_MAX_CONTAINERS 1
69 #define FSLMC_VFIO_LOG(level, fmt, args...) \
70 RTE_LOG(level, EAL, "%s(): " fmt "\n", __func__, ##args)
72 /** Pathname of FSL-MC devices directory. */
73 #define SYSFS_FSL_MC_DEVICES "/sys/bus/fsl-mc/devices"
75 /* Number of VFIO containers & groups with in */
76 static struct fslmc_vfio_group vfio_groups[VFIO_MAX_GRP];
77 static struct fslmc_vfio_container vfio_containers[VFIO_MAX_CONTAINERS];
78 static int container_device_fd;
79 static uint32_t *msi_intr_vaddr;
80 void *(*rte_mcp_ptr_list);
81 static uint32_t mcp_id;
82 static int is_dma_done;
83 static struct rte_fslmc_object_list fslmc_obj_list =
84 TAILQ_HEAD_INITIALIZER(fslmc_obj_list);
86 /*register a fslmc bus based dpaa2 driver */
88 rte_fslmc_object_register(struct rte_dpaa2_object *object)
92 TAILQ_INSERT_TAIL(&fslmc_obj_list, object, next);
95 static int vfio_connect_container(struct fslmc_vfio_group *vfio_group)
97 struct fslmc_vfio_container *container;
100 /* Try connecting to vfio container if already created */
101 for (i = 0; i < VFIO_MAX_CONTAINERS; i++) {
102 container = &vfio_containers[i];
103 if (!ioctl(vfio_group->fd, VFIO_GROUP_SET_CONTAINER,
106 "Container pre-exists with FD[0x%x] for this group",
108 vfio_group->container = container;
113 /* Opens main vfio file descriptor which represents the "container" */
114 fd = vfio_get_container_fd();
116 FSLMC_VFIO_LOG(ERR, "Failed to open VFIO container");
120 /* Check whether support for SMMU type IOMMU present or not */
121 if (ioctl(fd, VFIO_CHECK_EXTENSION, VFIO_TYPE1_IOMMU)) {
122 /* Connect group to container */
123 ret = ioctl(vfio_group->fd, VFIO_GROUP_SET_CONTAINER, &fd);
125 FSLMC_VFIO_LOG(ERR, "Failed to setup group container");
130 ret = ioctl(fd, VFIO_SET_IOMMU, VFIO_TYPE1_IOMMU);
132 FSLMC_VFIO_LOG(ERR, "Failed to setup VFIO iommu");
137 FSLMC_VFIO_LOG(ERR, "No supported IOMMU available");
143 for (i = 0; i < VFIO_MAX_CONTAINERS; i++) {
144 if (vfio_containers[i].used)
146 container = &vfio_containers[i];
149 FSLMC_VFIO_LOG(ERR, "No free container found");
156 container->group_list[container->index] = vfio_group;
157 vfio_group->container = container;
162 static int vfio_map_irq_region(struct fslmc_vfio_group *group)
165 unsigned long *vaddr = NULL;
166 struct vfio_iommu_type1_dma_map map = {
167 .argsz = sizeof(map),
168 .flags = VFIO_DMA_MAP_FLAG_READ | VFIO_DMA_MAP_FLAG_WRITE,
174 vaddr = (unsigned long *)mmap(NULL, 0x1000, PROT_WRITE |
175 PROT_READ, MAP_SHARED, container_device_fd, 0x6030000);
176 if (vaddr == MAP_FAILED) {
177 FSLMC_VFIO_LOG(ERR, "Unable to map region (errno = %d)", errno);
181 msi_intr_vaddr = (uint32_t *)((char *)(vaddr) + 64);
182 map.vaddr = (unsigned long)vaddr;
183 ret = ioctl(group->container->fd, VFIO_IOMMU_MAP_DMA, &map);
187 FSLMC_VFIO_LOG(ERR, "VFIO_IOMMU_MAP_DMA fails (errno = %d)", errno);
191 int vfio_dmamap_mem_region(uint64_t vaddr,
195 struct fslmc_vfio_group *group;
196 struct vfio_iommu_type1_dma_map dma_map = {
197 .argsz = sizeof(dma_map),
198 .flags = VFIO_DMA_MAP_FLAG_READ | VFIO_DMA_MAP_FLAG_WRITE,
201 dma_map.vaddr = vaddr;
205 /* SET DMA MAP for IOMMU */
206 group = &vfio_groups[0];
207 if (ioctl(group->container->fd, VFIO_IOMMU_MAP_DMA, &dma_map)) {
208 FSLMC_VFIO_LOG(ERR, "VFIO_IOMMU_MAP_DMA (errno = %d)", errno);
214 int rte_fslmc_vfio_dmamap(void)
217 struct fslmc_vfio_group *group;
218 struct vfio_iommu_type1_dma_map dma_map = {
219 .argsz = sizeof(struct vfio_iommu_type1_dma_map),
220 .flags = VFIO_DMA_MAP_FLAG_READ | VFIO_DMA_MAP_FLAG_WRITE,
224 const struct rte_memseg *memseg;
229 memseg = rte_eal_get_physmem_layout();
230 if (memseg == NULL) {
231 FSLMC_VFIO_LOG(ERR, "Cannot get physical layout.");
235 for (i = 0; i < RTE_MAX_MEMSEG; i++) {
236 if (memseg[i].addr == NULL && memseg[i].len == 0) {
237 FSLMC_VFIO_LOG(DEBUG, "Total %d segments found.", i);
241 dma_map.size = memseg[i].len;
242 dma_map.vaddr = memseg[i].addr_64;
243 #ifdef RTE_LIBRTE_DPAA2_USE_PHYS_IOVA
244 dma_map.iova = memseg[i].phys_addr;
246 dma_map.iova = dma_map.vaddr;
249 /* SET DMA MAP for IOMMU */
250 group = &vfio_groups[0];
252 if (!group->container) {
253 FSLMC_VFIO_LOG(ERR, "Container is not connected ");
257 FSLMC_VFIO_LOG(DEBUG, "-->Initial SHM Virtual ADDR %llX",
259 FSLMC_VFIO_LOG(DEBUG, "-----> DMA size 0x%llX", dma_map.size);
260 ret = ioctl(group->container->fd, VFIO_IOMMU_MAP_DMA,
263 FSLMC_VFIO_LOG(ERR, "VFIO_IOMMU_MAP_DMA API(errno = %d)",
269 /* Verifying that at least single segment is available */
271 FSLMC_VFIO_LOG(ERR, "No Segments found for VFIO Mapping");
275 /* TODO - This is a W.A. as VFIO currently does not add the mapping of
276 * the interrupt region to SMMU. This should be removed once the
277 * support is added in the Kernel.
279 vfio_map_irq_region(group);
286 static int64_t vfio_map_mcp_obj(struct fslmc_vfio_group *group, char *mcp_obj)
288 int64_t v_addr = (int64_t)MAP_FAILED;
291 struct vfio_device_info d_info = { .argsz = sizeof(d_info) };
292 struct vfio_region_info reg_info = { .argsz = sizeof(reg_info) };
294 /* getting the mcp object's fd*/
295 mc_fd = ioctl(group->fd, VFIO_GROUP_GET_DEVICE_FD, mcp_obj);
297 FSLMC_VFIO_LOG(ERR, "error in VFIO get dev %s fd from group %d",
302 /* getting device info*/
303 ret = ioctl(mc_fd, VFIO_DEVICE_GET_INFO, &d_info);
305 FSLMC_VFIO_LOG(ERR, "error in VFIO getting DEVICE_INFO");
309 /* getting device region info*/
310 ret = ioctl(mc_fd, VFIO_DEVICE_GET_REGION_INFO, ®_info);
312 FSLMC_VFIO_LOG(ERR, "error in VFIO getting REGION_INFO");
316 FSLMC_VFIO_LOG(DEBUG, "region offset = %llx , region size = %llx",
317 reg_info.offset, reg_info.size);
319 v_addr = (uint64_t)mmap(NULL, reg_info.size,
320 PROT_WRITE | PROT_READ, MAP_SHARED,
321 mc_fd, reg_info.offset);
330 dpaa2_compare_dpaa2_dev(const struct rte_dpaa2_device *dev,
331 const struct rte_dpaa2_device *dev2)
333 /*not the same family device */
334 if (dev->dev_type != DPAA2_MC_DPNI_DEVID ||
335 dev->dev_type != DPAA2_MC_DPSECI_DEVID)
338 if (dev->object_id == dev2->object_id)
345 fslmc_bus_add_device(struct rte_dpaa2_device *dev)
347 struct rte_fslmc_device_list *dev_l;
349 dev_l = &rte_fslmc_bus.device_list;
351 /* device is valid, add in list (sorted) */
352 if (TAILQ_EMPTY(dev_l)) {
353 TAILQ_INSERT_TAIL(dev_l, dev, next);
355 struct rte_dpaa2_device *dev2;
358 TAILQ_FOREACH(dev2, dev_l, next) {
359 ret = dpaa2_compare_dpaa2_dev(dev, dev2);
363 TAILQ_INSERT_BEFORE(dev2, dev, next);
367 TAILQ_INSERT_TAIL(dev_l, dev, next);
371 /* Following function shall fetch total available list of MC devices
372 * from VFIO container & populate private list of devices and other
375 int fslmc_vfio_process_group(void)
377 struct fslmc_vfio_device *vdev;
378 struct vfio_device_info device_info = { .argsz = sizeof(device_info) };
379 char *temp_obj, *object_type, *mcp_obj, *dev_name;
380 int32_t object_id, i, dev_fd, ret;
386 int dpio_count = 0, dpbp_count = 0;
387 struct fslmc_vfio_group *group = &vfio_groups[0];
388 static int process_once;
390 /* if already done once */
392 FSLMC_VFIO_LOG(DEBUG,
393 "Already scanned once - re-scan not supported");
398 sprintf(path, "/sys/kernel/iommu_groups/%d/devices", group->groupid);
402 FSLMC_VFIO_LOG(ERR, "Unable to open directory %s", path);
406 /*Counting the number of devices in a group and getting the mcp ID*/
409 while ((dir = readdir(d)) != NULL) {
410 if (dir->d_type == DT_LNK) {
412 if (!strncmp("dpmcp", dir->d_name, 5)) {
415 mcp_obj = malloc(sizeof(dir->d_name));
418 "mcp obj:alloc failed");
422 strcpy(mcp_obj, dir->d_name);
423 temp_obj = strtok(dir->d_name, ".");
424 temp_obj = strtok(NULL, ".");
425 sscanf(temp_obj, "%d", &mcp_id);
432 FSLMC_VFIO_LOG(ERR, "DPAA2 MCP Object not Found");
435 RTE_LOG(INFO, EAL, "fslmc: DPRC contains = %d devices\n", ndev_count);
437 /* Allocate the memory depends upon number of objects in a group*/
438 group->vfio_device = (struct fslmc_vfio_device *)malloc(ndev_count *
439 sizeof(struct fslmc_vfio_device));
440 if (!(group->vfio_device)) {
441 FSLMC_VFIO_LOG(ERR, "vfio device: Unable to allocate memory\n");
446 /* Allocate memory for MC Portal list */
447 rte_mcp_ptr_list = malloc(sizeof(void *) * 1);
448 if (!rte_mcp_ptr_list) {
449 FSLMC_VFIO_LOG(ERR, "portal list: Unable to allocate memory!");
454 v_addr = vfio_map_mcp_obj(group, mcp_obj);
456 if (v_addr == (int64_t)MAP_FAILED) {
457 FSLMC_VFIO_LOG(ERR, "Error mapping region (errno = %d)", errno);
461 rte_mcp_ptr_list[0] = (void *)v_addr;
465 FSLMC_VFIO_LOG(ERR, "Unable to open %s Directory", path);
470 /* Parsing each object and initiating them*/
471 while ((dir = readdir(d)) != NULL) {
472 if (dir->d_type != DT_LNK)
474 if (!strncmp("dprc", dir->d_name, 4) ||
475 !strncmp("dpmcp", dir->d_name, 5))
477 dev_name = malloc(sizeof(dir->d_name));
479 FSLMC_VFIO_LOG(ERR, "name: Unable to allocate memory");
482 strcpy(dev_name, dir->d_name);
483 object_type = strtok(dir->d_name, ".");
484 temp_obj = strtok(NULL, ".");
485 sscanf(temp_obj, "%d", &object_id);
487 /* getting the device fd*/
488 dev_fd = ioctl(group->fd, VFIO_GROUP_GET_DEVICE_FD, dev_name);
491 "GET_DEVICE_FD error fd: %s, Group: %d",
492 dev_name, group->fd);
498 vdev = &group->vfio_device[group->object_index++];
502 /* Get Device inofrmation */
503 if (ioctl(vdev->fd, VFIO_DEVICE_GET_INFO, &device_info)) {
504 FSLMC_VFIO_LOG(ERR, "DPAA2 VFIO_DEVICE_GET_INFO fail");
507 if (!strcmp(object_type, "dpni") ||
508 !strcmp(object_type, "dpseci")) {
509 struct rte_dpaa2_device *dev;
511 dev = malloc(sizeof(struct rte_dpaa2_device));
515 memset(dev, 0, sizeof(*dev));
516 /* store hw_id of dpni/dpseci device */
517 dev->object_id = object_id;
518 dev->dev_type = (strcmp(object_type, "dpseci")) ?
519 DPAA2_MC_DPNI_DEVID : DPAA2_MC_DPSECI_DEVID;
521 FSLMC_VFIO_LOG(DEBUG, "DPAA2: Added [%s-%d]",
522 object_type, object_id);
524 fslmc_bus_add_device(dev);
526 if (!strcmp(object_type, "dpio")) {
527 ret = dpaa2_create_dpio_device(vdev,
533 if (!strcmp(object_type, "dpbp")) {
534 ret = dpaa2_create_dpbp_device(object_id);
541 ret = dpaa2_affine_qbman_swp();
543 FSLMC_VFIO_LOG(DEBUG, "Error in affining qbman swp %d", ret);
545 FSLMC_VFIO_LOG(DEBUG, "DPAA2: Added dpbp_count = %d dpio_count=%d",
546 dpbp_count, dpio_count);
552 if (rte_mcp_ptr_list) {
553 free(rte_mcp_ptr_list);
554 rte_mcp_ptr_list = NULL;
557 free(group->vfio_device);
558 group->vfio_device = NULL;
562 int fslmc_vfio_setup_group(void)
564 struct fslmc_vfio_group *group = NULL;
568 struct vfio_group_status status = { .argsz = sizeof(status) };
570 /* if already done once */
571 if (container_device_fd)
574 container = getenv("DPRC");
576 if (container == NULL) {
577 FSLMC_VFIO_LOG(ERR, "VFIO container not set in env DPRC");
581 /* get group number */
582 ret = vfio_get_group_no(SYSFS_FSL_MC_DEVICES, container, &groupid);
584 RTE_LOG(WARNING, EAL, "%s not managed by VFIO, skipping\n",
589 /* if negative, something failed */
593 FSLMC_VFIO_LOG(DEBUG, "VFIO iommu group id = %d", groupid);
595 /* Check if group already exists */
596 for (i = 0; i < VFIO_MAX_GRP; i++) {
597 group = &vfio_groups[i];
598 if (group->groupid == groupid) {
599 FSLMC_VFIO_LOG(ERR, "groupid already exists %d",
605 /* get the actual group fd */
606 ret = vfio_get_group_fd(groupid);
612 * at this point, we know that this group is viable (meaning,
613 * all devices are either bound to VFIO or not bound to anything)
616 ret = ioctl(group->fd, VFIO_GROUP_GET_STATUS, &status);
618 FSLMC_VFIO_LOG(ERR, " VFIO error getting group status");
623 if (!(status.flags & VFIO_GROUP_FLAGS_VIABLE)) {
624 FSLMC_VFIO_LOG(ERR, "VFIO group not viable");
628 /* Since Group is VIABLE, Store the groupid */
629 group->groupid = groupid;
631 /* check if group does not have a container yet */
632 if (!(status.flags & VFIO_GROUP_FLAGS_CONTAINER_SET)) {
633 /* Now connect this IOMMU group to given container */
634 ret = vfio_connect_container(group);
636 FSLMC_VFIO_LOG(ERR, "VFIO error connecting container"
637 " with groupid %d", groupid);
643 /* Get Device information */
644 ret = ioctl(group->fd, VFIO_GROUP_GET_DEVICE_FD, container);
646 FSLMC_VFIO_LOG(ERR, "VFIO error getting device %s fd from"
647 " group %d", container, group->groupid);
650 container_device_fd = ret;
651 FSLMC_VFIO_LOG(DEBUG, "VFIO Container FD is [0x%X]",
652 container_device_fd);