4 * Copyright (c) 2015-2016 Freescale Semiconductor, Inc. All rights reserved.
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36 #include <sys/types.h>
41 #include <sys/ioctl.h>
47 #include <sys/eventfd.h>
50 #include <rte_ethdev.h>
51 #include <rte_malloc.h>
52 #include <rte_memcpy.h>
53 #include <rte_string_fns.h>
54 #include <rte_cycles.h>
55 #include <rte_kvargs.h>
59 #include "rte_fslmc.h"
60 #include "fslmc_vfio.h"
62 #include "portal/dpaa2_hw_pvt.h"
63 #include "portal/dpaa2_hw_dpio.h"
65 #define VFIO_MAX_CONTAINERS 1
67 #define FSLMC_VFIO_LOG(level, fmt, args...) \
68 RTE_LOG(level, EAL, "%s(): " fmt "\n", __func__, ##args)
70 /** Pathname of FSL-MC devices directory. */
71 #define SYSFS_FSL_MC_DEVICES "/sys/bus/fsl-mc/devices"
73 /* Number of VFIO containers & groups with in */
74 static struct fslmc_vfio_group vfio_groups[VFIO_MAX_GRP];
75 static struct fslmc_vfio_container vfio_containers[VFIO_MAX_CONTAINERS];
76 static int container_device_fd;
77 static uint32_t *msi_intr_vaddr;
78 void *(*rte_mcp_ptr_list);
79 static uint32_t mcp_id;
80 static int is_dma_done;
81 static struct rte_fslmc_object_list fslmc_obj_list =
82 TAILQ_HEAD_INITIALIZER(fslmc_obj_list);
84 /*register a fslmc bus based dpaa2 driver */
86 rte_fslmc_object_register(struct rte_dpaa2_object *object)
90 TAILQ_INSERT_TAIL(&fslmc_obj_list, object, next);
93 static int vfio_connect_container(struct fslmc_vfio_group *vfio_group)
95 struct fslmc_vfio_container *container;
98 /* Try connecting to vfio container if already created */
99 for (i = 0; i < VFIO_MAX_CONTAINERS; i++) {
100 container = &vfio_containers[i];
101 if (!ioctl(vfio_group->fd, VFIO_GROUP_SET_CONTAINER,
104 "Container pre-exists with FD[0x%x] for this group",
106 vfio_group->container = container;
111 /* Opens main vfio file descriptor which represents the "container" */
112 fd = vfio_get_container_fd();
114 FSLMC_VFIO_LOG(ERR, "Failed to open VFIO container");
118 /* Check whether support for SMMU type IOMMU present or not */
119 if (ioctl(fd, VFIO_CHECK_EXTENSION, VFIO_TYPE1_IOMMU)) {
120 /* Connect group to container */
121 ret = ioctl(vfio_group->fd, VFIO_GROUP_SET_CONTAINER, &fd);
123 FSLMC_VFIO_LOG(ERR, "Failed to setup group container");
128 ret = ioctl(fd, VFIO_SET_IOMMU, VFIO_TYPE1_IOMMU);
130 FSLMC_VFIO_LOG(ERR, "Failed to setup VFIO iommu");
135 FSLMC_VFIO_LOG(ERR, "No supported IOMMU available");
141 for (i = 0; i < VFIO_MAX_CONTAINERS; i++) {
142 if (vfio_containers[i].used)
144 container = &vfio_containers[i];
147 FSLMC_VFIO_LOG(ERR, "No free container found");
154 container->group_list[container->index] = vfio_group;
155 vfio_group->container = container;
160 static int vfio_map_irq_region(struct fslmc_vfio_group *group)
163 unsigned long *vaddr = NULL;
164 struct vfio_iommu_type1_dma_map map = {
165 .argsz = sizeof(map),
166 .flags = VFIO_DMA_MAP_FLAG_READ | VFIO_DMA_MAP_FLAG_WRITE,
172 vaddr = (unsigned long *)mmap(NULL, 0x1000, PROT_WRITE |
173 PROT_READ, MAP_SHARED, container_device_fd, 0x6030000);
174 if (vaddr == MAP_FAILED) {
175 FSLMC_VFIO_LOG(ERR, "Unable to map region (errno = %d)", errno);
179 msi_intr_vaddr = (uint32_t *)((char *)(vaddr) + 64);
180 map.vaddr = (unsigned long)vaddr;
181 ret = ioctl(group->container->fd, VFIO_IOMMU_MAP_DMA, &map);
185 FSLMC_VFIO_LOG(ERR, "VFIO_IOMMU_MAP_DMA fails (errno = %d)", errno);
189 int rte_fslmc_vfio_dmamap(void)
192 struct fslmc_vfio_group *group;
193 struct vfio_iommu_type1_dma_map dma_map = {
194 .argsz = sizeof(struct vfio_iommu_type1_dma_map),
195 .flags = VFIO_DMA_MAP_FLAG_READ | VFIO_DMA_MAP_FLAG_WRITE,
199 const struct rte_memseg *memseg;
204 memseg = rte_eal_get_physmem_layout();
205 if (memseg == NULL) {
206 FSLMC_VFIO_LOG(ERR, "Cannot get physical layout.");
210 for (i = 0; i < RTE_MAX_MEMSEG; i++) {
211 if (memseg[i].addr == NULL && memseg[i].len == 0) {
212 FSLMC_VFIO_LOG(DEBUG, "Total %d segments found.", i);
216 dma_map.size = memseg[i].len;
217 dma_map.vaddr = memseg[i].addr_64;
218 #ifdef RTE_LIBRTE_DPAA2_USE_PHYS_IOVA
219 dma_map.iova = memseg[i].phys_addr;
221 dma_map.iova = dma_map.vaddr;
224 /* SET DMA MAP for IOMMU */
225 group = &vfio_groups[0];
227 if (!group->container) {
228 FSLMC_VFIO_LOG(ERR, "Container is not connected ");
232 FSLMC_VFIO_LOG(DEBUG, "-->Initial SHM Virtual ADDR %llX",
234 FSLMC_VFIO_LOG(DEBUG, "-----> DMA size 0x%llX", dma_map.size);
235 ret = ioctl(group->container->fd, VFIO_IOMMU_MAP_DMA,
238 FSLMC_VFIO_LOG(ERR, "VFIO_IOMMU_MAP_DMA API(errno = %d)",
244 /* Verifying that at least single segment is available */
246 FSLMC_VFIO_LOG(ERR, "No Segments found for VFIO Mapping");
250 /* TODO - This is a W.A. as VFIO currently does not add the mapping of
251 * the interrupt region to SMMU. This should be removed once the
252 * support is added in the Kernel.
254 vfio_map_irq_region(group);
261 static int64_t vfio_map_mcp_obj(struct fslmc_vfio_group *group, char *mcp_obj)
263 int64_t v_addr = (int64_t)MAP_FAILED;
266 struct vfio_device_info d_info = { .argsz = sizeof(d_info) };
267 struct vfio_region_info reg_info = { .argsz = sizeof(reg_info) };
269 /* getting the mcp object's fd*/
270 mc_fd = ioctl(group->fd, VFIO_GROUP_GET_DEVICE_FD, mcp_obj);
272 FSLMC_VFIO_LOG(ERR, "error in VFIO get dev %s fd from group %d",
277 /* getting device info*/
278 ret = ioctl(mc_fd, VFIO_DEVICE_GET_INFO, &d_info);
280 FSLMC_VFIO_LOG(ERR, "error in VFIO getting DEVICE_INFO");
284 /* getting device region info*/
285 ret = ioctl(mc_fd, VFIO_DEVICE_GET_REGION_INFO, ®_info);
287 FSLMC_VFIO_LOG(ERR, "error in VFIO getting REGION_INFO");
291 FSLMC_VFIO_LOG(DEBUG, "region offset = %llx , region size = %llx",
292 reg_info.offset, reg_info.size);
294 v_addr = (uint64_t)mmap(NULL, reg_info.size,
295 PROT_WRITE | PROT_READ, MAP_SHARED,
296 mc_fd, reg_info.offset);
305 dpaa2_compare_dpaa2_dev(const struct rte_dpaa2_device *dev,
306 const struct rte_dpaa2_device *dev2)
308 /*not the same family device */
309 if (dev->dev_type != DPAA2_MC_DPNI_DEVID ||
310 dev->dev_type != DPAA2_MC_DPSECI_DEVID)
313 if (dev->object_id == dev2->object_id)
320 fslmc_bus_add_device(struct rte_dpaa2_device *dev)
322 struct rte_fslmc_device_list *dev_l;
324 dev_l = &rte_fslmc_bus.device_list;
326 /* device is valid, add in list (sorted) */
327 if (TAILQ_EMPTY(dev_l)) {
328 TAILQ_INSERT_TAIL(dev_l, dev, next);
330 struct rte_dpaa2_device *dev2;
333 TAILQ_FOREACH(dev2, dev_l, next) {
334 ret = dpaa2_compare_dpaa2_dev(dev, dev2);
338 TAILQ_INSERT_BEFORE(dev2, dev, next);
342 TAILQ_INSERT_TAIL(dev_l, dev, next);
346 #define IRQ_SET_BUF_LEN (sizeof(struct vfio_irq_set) + sizeof(int))
348 int rte_dpaa2_intr_enable(struct rte_intr_handle *intr_handle,
351 struct vfio_irq_set *irq_set;
352 char irq_set_buf[IRQ_SET_BUF_LEN];
353 int *fd_ptr, fd, ret;
355 /* Prepare vfio_irq_set structure and SET the IRQ in VFIO */
356 /* Give the eventfd to VFIO */
358 irq_set = (struct vfio_irq_set *)irq_set_buf;
359 irq_set->argsz = sizeof(irq_set_buf);
361 irq_set->flags = VFIO_IRQ_SET_DATA_EVENTFD |
362 VFIO_IRQ_SET_ACTION_TRIGGER;
363 irq_set->index = index;
365 fd_ptr = (int *)&irq_set->data;
368 ret = ioctl(intr_handle->vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
370 FSLMC_VFIO_LOG(ERR, "Unable to set IRQ in VFIO, ret: %d\n",
375 /* Set the FD and update the flags */
376 intr_handle->fd = fd;
380 /* Following function shall fetch total available list of MC devices
381 * from VFIO container & populate private list of devices and other
384 int fslmc_vfio_process_group(void)
386 struct fslmc_vfio_device *vdev;
387 struct vfio_device_info device_info = { .argsz = sizeof(device_info) };
388 char *temp_obj, *object_type, *mcp_obj, *dev_name;
389 int32_t object_id, i, dev_fd, ret;
395 struct fslmc_vfio_group *group = &vfio_groups[0];
396 static int process_once;
398 /* if already done once */
400 FSLMC_VFIO_LOG(DEBUG,
401 "Already scanned once - re-scan not supported");
406 sprintf(path, "/sys/kernel/iommu_groups/%d/devices", group->groupid);
410 FSLMC_VFIO_LOG(ERR, "Unable to open directory %s", path);
414 /*Counting the number of devices in a group and getting the mcp ID*/
417 while ((dir = readdir(d)) != NULL) {
418 if (dir->d_type == DT_LNK) {
420 if (!strncmp("dpmcp", dir->d_name, 5)) {
423 mcp_obj = malloc(sizeof(dir->d_name));
426 "mcp obj:alloc failed");
430 strcpy(mcp_obj, dir->d_name);
431 temp_obj = strtok(dir->d_name, ".");
432 temp_obj = strtok(NULL, ".");
433 sscanf(temp_obj, "%d", &mcp_id);
440 FSLMC_VFIO_LOG(ERR, "DPAA2 MCP Object not Found");
443 RTE_LOG(INFO, EAL, "fslmc: DPRC contains = %d devices\n", ndev_count);
445 /* Allocate the memory depends upon number of objects in a group*/
446 group->vfio_device = (struct fslmc_vfio_device *)malloc(ndev_count *
447 sizeof(struct fslmc_vfio_device));
448 if (!(group->vfio_device)) {
449 FSLMC_VFIO_LOG(ERR, "vfio device: Unable to allocate memory\n");
454 /* Allocate memory for MC Portal list */
455 rte_mcp_ptr_list = malloc(sizeof(void *) * 1);
456 if (!rte_mcp_ptr_list) {
457 FSLMC_VFIO_LOG(ERR, "portal list: Unable to allocate memory!");
462 v_addr = vfio_map_mcp_obj(group, mcp_obj);
464 if (v_addr == (int64_t)MAP_FAILED) {
465 FSLMC_VFIO_LOG(ERR, "Error mapping region (errno = %d)", errno);
469 rte_mcp_ptr_list[0] = (void *)v_addr;
473 FSLMC_VFIO_LOG(ERR, "Unable to open %s Directory", path);
478 /* Parsing each object and initiating them*/
479 while ((dir = readdir(d)) != NULL) {
480 if (dir->d_type != DT_LNK)
482 if (!strncmp("dprc", dir->d_name, 4) ||
483 !strncmp("dpmcp", dir->d_name, 5))
485 dev_name = malloc(sizeof(dir->d_name));
487 FSLMC_VFIO_LOG(ERR, "name: Unable to allocate memory");
490 strcpy(dev_name, dir->d_name);
491 object_type = strtok(dir->d_name, ".");
492 temp_obj = strtok(NULL, ".");
493 sscanf(temp_obj, "%d", &object_id);
495 /* getting the device fd*/
496 dev_fd = ioctl(group->fd, VFIO_GROUP_GET_DEVICE_FD, dev_name);
499 "GET_DEVICE_FD error fd: %s, Group: %d",
500 dev_name, group->fd);
506 vdev = &group->vfio_device[group->object_index++];
510 /* Get Device inofrmation */
511 if (ioctl(vdev->fd, VFIO_DEVICE_GET_INFO, &device_info)) {
512 FSLMC_VFIO_LOG(ERR, "DPAA2 VFIO_DEVICE_GET_INFO fail");
515 if (!strcmp(object_type, "dpni") ||
516 !strcmp(object_type, "dpseci")) {
517 struct rte_dpaa2_device *dev;
519 dev = malloc(sizeof(struct rte_dpaa2_device));
523 memset(dev, 0, sizeof(*dev));
524 /* store hw_id of dpni/dpseci device */
525 dev->object_id = object_id;
526 dev->dev_type = (strcmp(object_type, "dpseci")) ?
527 DPAA2_MC_DPNI_DEVID : DPAA2_MC_DPSECI_DEVID;
529 sprintf(dev->name, "%s.%d", object_type, object_id);
530 dev->device.name = dev->name;
532 fslmc_bus_add_device(dev);
533 FSLMC_VFIO_LOG(DEBUG, "DPAA2: Added %s", dev->name);
535 /* Parse all other objects */
536 struct rte_dpaa2_object *object;
538 TAILQ_FOREACH(object, &fslmc_obj_list, next) {
539 if (!strcmp(object_type, object->name))
540 object->create(vdev, &device_info,
549 ret = dpaa2_affine_qbman_swp();
551 FSLMC_VFIO_LOG(DEBUG, "Error in affining qbman swp %d", ret);
558 if (rte_mcp_ptr_list) {
559 free(rte_mcp_ptr_list);
560 rte_mcp_ptr_list = NULL;
563 free(group->vfio_device);
564 group->vfio_device = NULL;
568 int fslmc_vfio_setup_group(void)
570 struct fslmc_vfio_group *group = NULL;
574 struct vfio_group_status status = { .argsz = sizeof(status) };
576 /* if already done once */
577 if (container_device_fd)
580 container = getenv("DPRC");
582 if (container == NULL) {
583 FSLMC_VFIO_LOG(ERR, "VFIO container not set in env DPRC");
587 /* get group number */
588 ret = vfio_get_group_no(SYSFS_FSL_MC_DEVICES, container, &groupid);
590 RTE_LOG(WARNING, EAL, "%s not managed by VFIO, skipping\n",
595 /* if negative, something failed */
599 FSLMC_VFIO_LOG(DEBUG, "VFIO iommu group id = %d", groupid);
601 /* Check if group already exists */
602 for (i = 0; i < VFIO_MAX_GRP; i++) {
603 group = &vfio_groups[i];
604 if (group->groupid == groupid) {
605 FSLMC_VFIO_LOG(ERR, "groupid already exists %d",
611 /* get the actual group fd */
612 ret = vfio_get_group_fd(groupid);
618 * at this point, we know that this group is viable (meaning,
619 * all devices are either bound to VFIO or not bound to anything)
622 ret = ioctl(group->fd, VFIO_GROUP_GET_STATUS, &status);
624 FSLMC_VFIO_LOG(ERR, " VFIO error getting group status");
629 if (!(status.flags & VFIO_GROUP_FLAGS_VIABLE)) {
630 FSLMC_VFIO_LOG(ERR, "VFIO group not viable");
634 /* Since Group is VIABLE, Store the groupid */
635 group->groupid = groupid;
637 /* check if group does not have a container yet */
638 if (!(status.flags & VFIO_GROUP_FLAGS_CONTAINER_SET)) {
639 /* Now connect this IOMMU group to given container */
640 ret = vfio_connect_container(group);
642 FSLMC_VFIO_LOG(ERR, "VFIO error connecting container"
643 " with groupid %d", groupid);
649 /* Get Device information */
650 ret = ioctl(group->fd, VFIO_GROUP_GET_DEVICE_FD, container);
652 FSLMC_VFIO_LOG(ERR, "VFIO error getting device %s fd from"
653 " group %d", container, group->groupid);
656 container_device_fd = ret;
657 FSLMC_VFIO_LOG(DEBUG, "VFIO Container FD is [0x%X]",
658 container_device_fd);