4 * Copyright (c) 2015-2016 Freescale Semiconductor, Inc. All rights reserved.
5 * Copyright (c) 2016 NXP. All rights reserved.
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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;
84 static int vfio_connect_container(struct fslmc_vfio_group *vfio_group)
86 struct fslmc_vfio_container *container;
89 /* Try connecting to vfio container if already created */
90 for (i = 0; i < VFIO_MAX_CONTAINERS; i++) {
91 container = &vfio_containers[i];
92 if (!ioctl(vfio_group->fd, VFIO_GROUP_SET_CONTAINER,
95 "Container pre-exists with FD[0x%x] for this group",
97 vfio_group->container = container;
102 /* Opens main vfio file descriptor which represents the "container" */
103 fd = vfio_get_container_fd();
105 FSLMC_VFIO_LOG(ERR, "Failed to open VFIO container");
109 /* Check whether support for SMMU type IOMMU present or not */
110 if (ioctl(fd, VFIO_CHECK_EXTENSION, VFIO_TYPE1_IOMMU)) {
111 /* Connect group to container */
112 ret = ioctl(vfio_group->fd, VFIO_GROUP_SET_CONTAINER, &fd);
114 FSLMC_VFIO_LOG(ERR, "Failed to setup group container");
119 ret = ioctl(fd, VFIO_SET_IOMMU, VFIO_TYPE1_IOMMU);
121 FSLMC_VFIO_LOG(ERR, "Failed to setup VFIO iommu");
126 FSLMC_VFIO_LOG(ERR, "No supported IOMMU available");
132 for (i = 0; i < VFIO_MAX_CONTAINERS; i++) {
133 if (vfio_containers[i].used)
135 container = &vfio_containers[i];
138 FSLMC_VFIO_LOG(ERR, "No free container found");
145 container->group_list[container->index] = vfio_group;
146 vfio_group->container = container;
151 static int vfio_map_irq_region(struct fslmc_vfio_group *group)
154 unsigned long *vaddr = NULL;
155 struct vfio_iommu_type1_dma_map map = {
156 .argsz = sizeof(map),
157 .flags = VFIO_DMA_MAP_FLAG_READ | VFIO_DMA_MAP_FLAG_WRITE,
163 vaddr = (unsigned long *)mmap(NULL, 0x1000, PROT_WRITE |
164 PROT_READ, MAP_SHARED, container_device_fd, 0x6030000);
165 if (vaddr == MAP_FAILED) {
166 FSLMC_VFIO_LOG(ERR, "Unable to map region (errno = %d)", errno);
170 msi_intr_vaddr = (uint32_t *)((char *)(vaddr) + 64);
171 map.vaddr = (unsigned long)vaddr;
172 ret = ioctl(group->container->fd, VFIO_IOMMU_MAP_DMA, &map);
176 FSLMC_VFIO_LOG(ERR, "VFIO_IOMMU_MAP_DMA fails (errno = %d)", errno);
180 int vfio_dmamap_mem_region(uint64_t vaddr,
184 struct fslmc_vfio_group *group;
185 struct vfio_iommu_type1_dma_map dma_map = {
186 .argsz = sizeof(dma_map),
187 .flags = VFIO_DMA_MAP_FLAG_READ | VFIO_DMA_MAP_FLAG_WRITE,
190 dma_map.vaddr = vaddr;
194 /* SET DMA MAP for IOMMU */
195 group = &vfio_groups[0];
196 if (ioctl(group->container->fd, VFIO_IOMMU_MAP_DMA, &dma_map)) {
197 FSLMC_VFIO_LOG(ERR, "VFIO_IOMMU_MAP_DMA (errno = %d)", errno);
203 int rte_fslmc_vfio_dmamap(void)
206 struct fslmc_vfio_group *group;
207 struct vfio_iommu_type1_dma_map dma_map = {
208 .argsz = sizeof(struct vfio_iommu_type1_dma_map),
209 .flags = VFIO_DMA_MAP_FLAG_READ | VFIO_DMA_MAP_FLAG_WRITE,
213 const struct rte_memseg *memseg;
218 memseg = rte_eal_get_physmem_layout();
219 if (memseg == NULL) {
220 FSLMC_VFIO_LOG(ERR, "Cannot get physical layout.");
224 for (i = 0; i < RTE_MAX_MEMSEG; i++) {
225 if (memseg[i].addr == NULL && memseg[i].len == 0) {
226 FSLMC_VFIO_LOG(DEBUG, "Total %d segments found.", i);
230 dma_map.size = memseg[i].len;
231 dma_map.vaddr = memseg[i].addr_64;
232 #ifdef RTE_LIBRTE_DPAA2_USE_PHYS_IOVA
233 dma_map.iova = memseg[i].phys_addr;
235 dma_map.iova = dma_map.vaddr;
238 /* SET DMA MAP for IOMMU */
239 group = &vfio_groups[0];
241 if (!group->container) {
242 FSLMC_VFIO_LOG(ERR, "Container is not connected ");
246 FSLMC_VFIO_LOG(DEBUG, "-->Initial SHM Virtual ADDR %llX",
248 FSLMC_VFIO_LOG(DEBUG, "-----> DMA size 0x%llX", dma_map.size);
249 ret = ioctl(group->container->fd, VFIO_IOMMU_MAP_DMA,
252 FSLMC_VFIO_LOG(ERR, "VFIO_IOMMU_MAP_DMA API(errno = %d)",
258 /* Verifying that at least single segment is available */
260 FSLMC_VFIO_LOG(ERR, "No Segments found for VFIO Mapping");
264 /* TODO - This is a W.A. as VFIO currently does not add the mapping of
265 * the interrupt region to SMMU. This should be removed once the
266 * support is added in the Kernel.
268 vfio_map_irq_region(group);
275 static int64_t vfio_map_mcp_obj(struct fslmc_vfio_group *group, char *mcp_obj)
277 int64_t v_addr = (int64_t)MAP_FAILED;
280 struct vfio_device_info d_info = { .argsz = sizeof(d_info) };
281 struct vfio_region_info reg_info = { .argsz = sizeof(reg_info) };
283 /* getting the mcp object's fd*/
284 mc_fd = ioctl(group->fd, VFIO_GROUP_GET_DEVICE_FD, mcp_obj);
286 FSLMC_VFIO_LOG(ERR, "error in VFIO get dev %s fd from group %d",
291 /* getting device info*/
292 ret = ioctl(mc_fd, VFIO_DEVICE_GET_INFO, &d_info);
294 FSLMC_VFIO_LOG(ERR, "error in VFIO getting DEVICE_INFO");
298 /* getting device region info*/
299 ret = ioctl(mc_fd, VFIO_DEVICE_GET_REGION_INFO, ®_info);
301 FSLMC_VFIO_LOG(ERR, "error in VFIO getting REGION_INFO");
305 FSLMC_VFIO_LOG(DEBUG, "region offset = %llx , region size = %llx",
306 reg_info.offset, reg_info.size);
308 v_addr = (uint64_t)mmap(NULL, reg_info.size,
309 PROT_WRITE | PROT_READ, MAP_SHARED,
310 mc_fd, reg_info.offset);
319 dpaa2_compare_dpaa2_dev(const struct rte_dpaa2_device *dev,
320 const struct rte_dpaa2_device *dev2)
322 /*not the same family device */
323 if (dev->dev_type != DPAA2_MC_DPNI_DEVID ||
324 dev->dev_type != DPAA2_MC_DPSECI_DEVID)
327 if (dev->object_id == dev2->object_id)
334 fslmc_bus_add_device(struct rte_dpaa2_device *dev)
336 struct rte_fslmc_device_list *dev_l;
338 dev_l = &rte_fslmc_bus.device_list;
340 /* device is valid, add in list (sorted) */
341 if (TAILQ_EMPTY(dev_l)) {
342 TAILQ_INSERT_TAIL(dev_l, dev, next);
344 struct rte_dpaa2_device *dev2;
347 TAILQ_FOREACH(dev2, dev_l, next) {
348 ret = dpaa2_compare_dpaa2_dev(dev, dev2);
352 TAILQ_INSERT_BEFORE(dev2, dev, next);
356 TAILQ_INSERT_TAIL(dev_l, dev, next);
360 /* Following function shall fetch total available list of MC devices
361 * from VFIO container & populate private list of devices and other
364 int fslmc_vfio_process_group(void)
366 struct fslmc_vfio_device *vdev;
367 struct vfio_device_info device_info = { .argsz = sizeof(device_info) };
368 char *temp_obj, *object_type, *mcp_obj, *dev_name;
369 int32_t object_id, i, dev_fd, ret;
375 int dpio_count = 0, dpbp_count = 0;
376 struct fslmc_vfio_group *group = &vfio_groups[0];
377 static int process_once;
379 /* if already done once */
381 FSLMC_VFIO_LOG(DEBUG,
382 "Already scanned once - re-scan not supported");
387 sprintf(path, "/sys/kernel/iommu_groups/%d/devices", group->groupid);
391 FSLMC_VFIO_LOG(ERR, "Unable to open directory %s", path);
395 /*Counting the number of devices in a group and getting the mcp ID*/
398 while ((dir = readdir(d)) != NULL) {
399 if (dir->d_type == DT_LNK) {
401 if (!strncmp("dpmcp", dir->d_name, 5)) {
404 mcp_obj = malloc(sizeof(dir->d_name));
407 "mcp obj:alloc failed");
411 strcpy(mcp_obj, dir->d_name);
412 temp_obj = strtok(dir->d_name, ".");
413 temp_obj = strtok(NULL, ".");
414 sscanf(temp_obj, "%d", &mcp_id);
421 FSLMC_VFIO_LOG(ERR, "DPAA2 MCP Object not Found");
424 RTE_LOG(INFO, EAL, "fslmc: DPRC contains = %d devices\n", ndev_count);
426 /* Allocate the memory depends upon number of objects in a group*/
427 group->vfio_device = (struct fslmc_vfio_device *)malloc(ndev_count *
428 sizeof(struct fslmc_vfio_device));
429 if (!(group->vfio_device)) {
430 FSLMC_VFIO_LOG(ERR, "vfio device: Unable to allocate memory\n");
435 /* Allocate memory for MC Portal list */
436 rte_mcp_ptr_list = malloc(sizeof(void *) * 1);
437 if (!rte_mcp_ptr_list) {
438 FSLMC_VFIO_LOG(ERR, "portal list: Unable to allocate memory!");
443 v_addr = vfio_map_mcp_obj(group, mcp_obj);
445 if (v_addr == (int64_t)MAP_FAILED) {
446 FSLMC_VFIO_LOG(ERR, "Error mapping region (errno = %d)", errno);
450 rte_mcp_ptr_list[0] = (void *)v_addr;
454 FSLMC_VFIO_LOG(ERR, "Unable to open %s Directory", path);
459 /* Parsing each object and initiating them*/
460 while ((dir = readdir(d)) != NULL) {
461 if (dir->d_type != DT_LNK)
463 if (!strncmp("dprc", dir->d_name, 4) ||
464 !strncmp("dpmcp", dir->d_name, 5))
466 dev_name = malloc(sizeof(dir->d_name));
468 FSLMC_VFIO_LOG(ERR, "name: Unable to allocate memory");
471 strcpy(dev_name, dir->d_name);
472 object_type = strtok(dir->d_name, ".");
473 temp_obj = strtok(NULL, ".");
474 sscanf(temp_obj, "%d", &object_id);
476 /* getting the device fd*/
477 dev_fd = ioctl(group->fd, VFIO_GROUP_GET_DEVICE_FD, dev_name);
480 "GET_DEVICE_FD error fd: %s, Group: %d",
481 dev_name, group->fd);
487 vdev = &group->vfio_device[group->object_index++];
491 /* Get Device inofrmation */
492 if (ioctl(vdev->fd, VFIO_DEVICE_GET_INFO, &device_info)) {
493 FSLMC_VFIO_LOG(ERR, "DPAA2 VFIO_DEVICE_GET_INFO fail");
496 if (!strcmp(object_type, "dpni") ||
497 !strcmp(object_type, "dpseci")) {
498 struct rte_dpaa2_device *dev;
500 dev = malloc(sizeof(struct rte_dpaa2_device));
504 memset(dev, 0, sizeof(*dev));
505 /* store hw_id of dpni/dpseci device */
506 dev->object_id = object_id;
507 dev->dev_type = (strcmp(object_type, "dpseci")) ?
508 DPAA2_MC_DPNI_DEVID : DPAA2_MC_DPSECI_DEVID;
510 FSLMC_VFIO_LOG(DEBUG, "DPAA2: Added [%s-%d]",
511 object_type, object_id);
513 fslmc_bus_add_device(dev);
515 if (!strcmp(object_type, "dpio")) {
516 ret = dpaa2_create_dpio_device(vdev,
522 if (!strcmp(object_type, "dpbp")) {
523 ret = dpaa2_create_dpbp_device(object_id);
530 ret = dpaa2_affine_qbman_swp();
532 FSLMC_VFIO_LOG(DEBUG, "Error in affining qbman swp %d", ret);
534 FSLMC_VFIO_LOG(DEBUG, "DPAA2: Added dpbp_count = %d dpio_count=%d",
535 dpbp_count, dpio_count);
541 if (rte_mcp_ptr_list) {
542 free(rte_mcp_ptr_list);
543 rte_mcp_ptr_list = NULL;
546 free(group->vfio_device);
547 group->vfio_device = NULL;
551 int fslmc_vfio_setup_group(void)
553 struct fslmc_vfio_group *group = NULL;
557 struct vfio_group_status status = { .argsz = sizeof(status) };
559 /* if already done once */
560 if (container_device_fd)
563 container = getenv("DPRC");
565 if (container == NULL) {
566 FSLMC_VFIO_LOG(ERR, "VFIO container not set in env DPRC");
570 /* get group number */
571 ret = vfio_get_group_no(SYSFS_FSL_MC_DEVICES, container, &groupid);
573 RTE_LOG(WARNING, EAL, "%s not managed by VFIO, skipping\n",
578 /* if negative, something failed */
582 FSLMC_VFIO_LOG(DEBUG, "VFIO iommu group id = %d", groupid);
584 /* Check if group already exists */
585 for (i = 0; i < VFIO_MAX_GRP; i++) {
586 group = &vfio_groups[i];
587 if (group->groupid == groupid) {
588 FSLMC_VFIO_LOG(ERR, "groupid already exists %d",
594 /* get the actual group fd */
595 ret = vfio_get_group_fd(groupid);
601 * at this point, we know that this group is viable (meaning,
602 * all devices are either bound to VFIO or not bound to anything)
605 ret = ioctl(group->fd, VFIO_GROUP_GET_STATUS, &status);
607 FSLMC_VFIO_LOG(ERR, " VFIO error getting group status");
612 if (!(status.flags & VFIO_GROUP_FLAGS_VIABLE)) {
613 FSLMC_VFIO_LOG(ERR, "VFIO group not viable");
617 /* Since Group is VIABLE, Store the groupid */
618 group->groupid = groupid;
620 /* check if group does not have a container yet */
621 if (!(status.flags & VFIO_GROUP_FLAGS_CONTAINER_SET)) {
622 /* Now connect this IOMMU group to given container */
623 ret = vfio_connect_container(group);
625 FSLMC_VFIO_LOG(ERR, "VFIO error connecting container"
626 " with groupid %d", groupid);
632 /* Get Device information */
633 ret = ioctl(group->fd, VFIO_GROUP_GET_DEVICE_FD, container);
635 FSLMC_VFIO_LOG(ERR, "VFIO error getting device %s fd from"
636 " group %d", container, group->groupid);
639 container_device_fd = ret;
640 FSLMC_VFIO_LOG(DEBUG, "VFIO Container FD is [0x%X]",
641 container_device_fd);