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 #define VFIO_MAX_CONTAINERS 1
66 #define FSLMC_VFIO_LOG(level, fmt, args...) \
67 RTE_LOG(level, EAL, "%s(): " fmt "\n", __func__, ##args)
69 /** Pathname of FSL-MC devices directory. */
70 #define SYSFS_FSL_MC_DEVICES "/sys/bus/fsl-mc/devices"
72 /* Number of VFIO containers & groups with in */
73 static struct fslmc_vfio_group vfio_groups[VFIO_MAX_GRP];
74 static struct fslmc_vfio_container vfio_containers[VFIO_MAX_CONTAINERS];
75 static int container_device_fd;
76 void *(*rte_mcp_ptr_list);
77 static uint32_t mcp_id;
79 static int vfio_connect_container(struct fslmc_vfio_group *vfio_group)
81 struct fslmc_vfio_container *container;
84 /* Try connecting to vfio container if already created */
85 for (i = 0; i < VFIO_MAX_CONTAINERS; i++) {
86 container = &vfio_containers[i];
87 if (!ioctl(vfio_group->fd, VFIO_GROUP_SET_CONTAINER,
89 FSLMC_VFIO_LOG(INFO, "Container pre-exists with"
90 " FD[0x%x] for this group",
92 vfio_group->container = container;
97 /* Opens main vfio file descriptor which represents the "container" */
98 fd = vfio_get_container_fd();
100 FSLMC_VFIO_LOG(ERR, "Failed to open VFIO container");
104 /* Check whether support for SMMU type IOMMU present or not */
105 if (ioctl(fd, VFIO_CHECK_EXTENSION, VFIO_TYPE1_IOMMU)) {
106 /* Connect group to container */
107 ret = ioctl(vfio_group->fd, VFIO_GROUP_SET_CONTAINER, &fd);
109 FSLMC_VFIO_LOG(ERR, "Failed to setup group container");
114 ret = ioctl(fd, VFIO_SET_IOMMU, VFIO_TYPE1_IOMMU);
116 FSLMC_VFIO_LOG(ERR, "Failed to setup VFIO iommu");
121 FSLMC_VFIO_LOG(ERR, "No supported IOMMU available");
127 for (i = 0; i < VFIO_MAX_CONTAINERS; i++) {
128 if (vfio_containers[i].used)
130 FSLMC_VFIO_LOG(DEBUG, "Unused container at index %d", i);
131 container = &vfio_containers[i];
134 FSLMC_VFIO_LOG(ERR, "No free container found");
141 container->group_list[container->index] = vfio_group;
142 vfio_group->container = container;
147 int vfio_dmamap_mem_region(uint64_t vaddr,
151 struct fslmc_vfio_group *group;
152 struct vfio_iommu_type1_dma_map dma_map = {
153 .argsz = sizeof(dma_map),
154 .flags = VFIO_DMA_MAP_FLAG_READ | VFIO_DMA_MAP_FLAG_WRITE,
157 dma_map.vaddr = vaddr;
161 /* SET DMA MAP for IOMMU */
162 group = &vfio_groups[0];
163 if (ioctl(group->container->fd, VFIO_IOMMU_MAP_DMA, &dma_map)) {
164 FSLMC_VFIO_LOG(ERR, "VFIO_IOMMU_MAP_DMA (errno = %d)", errno);
170 static int64_t vfio_map_mcp_obj(struct fslmc_vfio_group *group, char *mcp_obj)
172 int64_t v_addr = (int64_t)MAP_FAILED;
175 struct vfio_device_info d_info = { .argsz = sizeof(d_info) };
176 struct vfio_region_info reg_info = { .argsz = sizeof(reg_info) };
178 /* getting the mcp object's fd*/
179 mc_fd = ioctl(group->fd, VFIO_GROUP_GET_DEVICE_FD, mcp_obj);
181 FSLMC_VFIO_LOG(ERR, "error in VFIO get device %s fd from group"
182 " %d", mcp_obj, group->fd);
186 /* getting device info*/
187 ret = ioctl(mc_fd, VFIO_DEVICE_GET_INFO, &d_info);
189 FSLMC_VFIO_LOG(ERR, "error in VFIO getting DEVICE_INFO");
193 /* getting device region info*/
194 ret = ioctl(mc_fd, VFIO_DEVICE_GET_REGION_INFO, ®_info);
196 FSLMC_VFIO_LOG(ERR, "error in VFIO getting REGION_INFO");
200 FSLMC_VFIO_LOG(DEBUG, "region offset = %llx , region size = %llx",
201 reg_info.offset, reg_info.size);
203 v_addr = (uint64_t)mmap(NULL, reg_info.size,
204 PROT_WRITE | PROT_READ, MAP_SHARED,
205 mc_fd, reg_info.offset);
214 dpaa2_compare_dpaa2_dev(const struct rte_dpaa2_device *dev,
215 const struct rte_dpaa2_device *dev2)
217 /*not the same family device */
218 if (dev->dev_type != DPAA2_MC_DPNI_DEVID ||
219 dev->dev_type != DPAA2_MC_DPSECI_DEVID)
222 if (dev->object_id == dev2->object_id)
229 fslmc_bus_add_device(struct rte_dpaa2_device *dev)
231 struct rte_fslmc_device_list *dev_l;
233 dev_l = &rte_fslmc_bus.device_list;
235 /* device is valid, add in list (sorted) */
236 if (TAILQ_EMPTY(dev_l)) {
237 TAILQ_INSERT_TAIL(dev_l, dev, next);
239 struct rte_dpaa2_device *dev2;
242 TAILQ_FOREACH(dev2, dev_l, next) {
243 ret = dpaa2_compare_dpaa2_dev(dev, dev2);
247 TAILQ_INSERT_BEFORE(dev2, dev, next);
251 TAILQ_INSERT_TAIL(dev_l, dev, next);
255 /* Following function shall fetch total available list of MC devices
256 * from VFIO container & populate private list of devices and other
259 int fslmc_vfio_process_group(void)
261 struct fslmc_vfio_device *vdev;
262 struct vfio_device_info device_info = { .argsz = sizeof(device_info) };
263 char *temp_obj, *object_type, *mcp_obj, *dev_name;
264 int32_t object_id, i, dev_fd;
270 struct fslmc_vfio_group *group = &vfio_groups[0];
271 static int process_once;
273 /* if already done once */
275 FSLMC_VFIO_LOG(DEBUG, "Already scanned once - re-scan "
281 sprintf(path, "/sys/kernel/iommu_groups/%d/devices", group->groupid);
285 FSLMC_VFIO_LOG(ERR, "Unable to open directory %s", path);
289 /*Counting the number of devices in a group and getting the mcp ID*/
292 while ((dir = readdir(d)) != NULL) {
293 if (dir->d_type == DT_LNK) {
295 if (!strncmp("dpmcp", dir->d_name, 5)) {
298 mcp_obj = malloc(sizeof(dir->d_name));
300 FSLMC_VFIO_LOG(ERR, "mcp obj:Unable to"
305 strcpy(mcp_obj, dir->d_name);
306 temp_obj = strtok(dir->d_name, ".");
307 temp_obj = strtok(NULL, ".");
308 sscanf(temp_obj, "%d", &mcp_id);
315 FSLMC_VFIO_LOG(ERR, "DPAA2 MCP Object not Found");
318 RTE_LOG(INFO, EAL, "fslmc: DPRC contains = %d devices\n", ndev_count);
320 /* Allocate the memory depends upon number of objects in a group*/
321 group->vfio_device = (struct fslmc_vfio_device *)malloc(ndev_count *
322 sizeof(struct fslmc_vfio_device));
323 if (!(group->vfio_device)) {
324 FSLMC_VFIO_LOG(ERR, "vfio device: Unable to allocate memory\n");
329 /* Allocate memory for MC Portal list */
330 rte_mcp_ptr_list = malloc(sizeof(void *) * 1);
331 if (!rte_mcp_ptr_list) {
332 FSLMC_VFIO_LOG(ERR, "portal list: Unable to allocate memory!");
337 v_addr = vfio_map_mcp_obj(group, mcp_obj);
339 if (v_addr == (int64_t)MAP_FAILED) {
340 FSLMC_VFIO_LOG(ERR, "Error mapping region (errno = %d)", errno);
344 FSLMC_VFIO_LOG(DEBUG, "DPAA2 MC has VIR_ADD = %ld", v_addr);
346 rte_mcp_ptr_list[0] = (void *)v_addr;
350 FSLMC_VFIO_LOG(ERR, "Unable to open %s Directory", path);
355 FSLMC_VFIO_LOG(DEBUG, "DPAA2 - Parsing devices:");
356 /* Parsing each object and initiating them*/
357 while ((dir = readdir(d)) != NULL) {
358 if (dir->d_type != DT_LNK)
360 if (!strncmp("dprc", dir->d_name, 4) ||
361 !strncmp("dpmcp", dir->d_name, 5))
363 dev_name = malloc(sizeof(dir->d_name));
365 FSLMC_VFIO_LOG(ERR, "name: Unable to allocate memory");
368 strcpy(dev_name, dir->d_name);
369 object_type = strtok(dir->d_name, ".");
370 temp_obj = strtok(NULL, ".");
371 sscanf(temp_obj, "%d", &object_id);
372 FSLMC_VFIO_LOG(DEBUG, " - %s ", dev_name);
374 /* getting the device fd*/
375 dev_fd = ioctl(group->fd, VFIO_GROUP_GET_DEVICE_FD, dev_name);
377 FSLMC_VFIO_LOG(ERR, "VFIO_GROUP_GET_DEVICE_FD error"
378 " Device fd: %s, Group: %d",
379 dev_name, group->fd);
385 vdev = &group->vfio_device[group->object_index++];
389 /* Get Device inofrmation */
390 if (ioctl(vdev->fd, VFIO_DEVICE_GET_INFO, &device_info)) {
391 FSLMC_VFIO_LOG(ERR, "DPAA2 VFIO_DEVICE_GET_INFO fail");
394 if (!strcmp(object_type, "dpni") ||
395 !strcmp(object_type, "dpseci")) {
396 struct rte_dpaa2_device *dev;
398 dev = malloc(sizeof(struct rte_dpaa2_device));
402 memset(dev, 0, sizeof(*dev));
403 /* store hw_id of dpni/dpseci device */
404 dev->object_id = object_id;
405 dev->dev_type = (strcmp(object_type, "dpseci")) ?
406 DPAA2_MC_DPNI_DEVID : DPAA2_MC_DPSECI_DEVID;
408 FSLMC_VFIO_LOG(DEBUG, "DPAA2: Added [%s-%d]\n",
409 object_type, object_id);
411 fslmc_bus_add_device(dev);
421 if (rte_mcp_ptr_list) {
422 free(rte_mcp_ptr_list);
423 rte_mcp_ptr_list = NULL;
426 free(group->vfio_device);
427 group->vfio_device = NULL;
431 int fslmc_vfio_setup_group(void)
433 struct fslmc_vfio_group *group = NULL;
437 struct vfio_group_status status = { .argsz = sizeof(status) };
439 /* if already done once */
440 if (container_device_fd)
443 container = getenv("DPRC");
445 if (container == NULL) {
446 FSLMC_VFIO_LOG(ERR, "VFIO container not set in env DPRC");
450 /* get group number */
451 ret = vfio_get_group_no(SYSFS_FSL_MC_DEVICES, container, &groupid);
453 RTE_LOG(WARNING, EAL, "%s not managed by VFIO, skipping\n",
458 /* if negative, something failed */
462 FSLMC_VFIO_LOG(DEBUG, "VFIO iommu group id = %d", groupid);
464 /* Check if group already exists */
465 for (i = 0; i < VFIO_MAX_GRP; i++) {
466 group = &vfio_groups[i];
467 if (group->groupid == groupid) {
468 FSLMC_VFIO_LOG(ERR, "groupid already exists %d",
474 /* get the actual group fd */
475 ret = vfio_get_group_fd(groupid);
481 * at this point, we know that this group is viable (meaning,
482 * all devices are either bound to VFIO or not bound to anything)
485 ret = ioctl(group->fd, VFIO_GROUP_GET_STATUS, &status);
487 FSLMC_VFIO_LOG(ERR, " VFIO error getting group status");
492 if (!(status.flags & VFIO_GROUP_FLAGS_VIABLE)) {
493 FSLMC_VFIO_LOG(ERR, "VFIO group not viable");
497 /* Since Group is VIABLE, Store the groupid */
498 group->groupid = groupid;
500 /* check if group does not have a container yet */
501 if (!(status.flags & VFIO_GROUP_FLAGS_CONTAINER_SET)) {
502 /* Now connect this IOMMU group to given container */
503 ret = vfio_connect_container(group);
505 FSLMC_VFIO_LOG(ERR, "VFIO error connecting container"
506 " with groupid %d", groupid);
512 /* Get Device information */
513 ret = ioctl(group->fd, VFIO_GROUP_GET_DEVICE_FD, container);
515 FSLMC_VFIO_LOG(ERR, "VFIO error getting device %s fd from"
516 " group %d", container, group->groupid);
519 container_device_fd = ret;
520 FSLMC_VFIO_LOG(DEBUG, "VFIO Container FD is [0x%X]",
521 container_device_fd);