4 * Copyright (c) 2015-2016 Freescale Semiconductor, Inc. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * * Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * * Neither the name of Freescale Semiconductor, Inc nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 vfio_dmamap_mem_region(uint64_t vaddr,
193 struct fslmc_vfio_group *group;
194 struct vfio_iommu_type1_dma_map dma_map = {
195 .argsz = sizeof(dma_map),
196 .flags = VFIO_DMA_MAP_FLAG_READ | VFIO_DMA_MAP_FLAG_WRITE,
199 dma_map.vaddr = vaddr;
203 /* SET DMA MAP for IOMMU */
204 group = &vfio_groups[0];
205 if (ioctl(group->container->fd, VFIO_IOMMU_MAP_DMA, &dma_map)) {
206 FSLMC_VFIO_LOG(ERR, "VFIO_IOMMU_MAP_DMA (errno = %d)", errno);
212 int rte_fslmc_vfio_dmamap(void)
215 struct fslmc_vfio_group *group;
216 struct vfio_iommu_type1_dma_map dma_map = {
217 .argsz = sizeof(struct vfio_iommu_type1_dma_map),
218 .flags = VFIO_DMA_MAP_FLAG_READ | VFIO_DMA_MAP_FLAG_WRITE,
222 const struct rte_memseg *memseg;
227 memseg = rte_eal_get_physmem_layout();
228 if (memseg == NULL) {
229 FSLMC_VFIO_LOG(ERR, "Cannot get physical layout.");
233 for (i = 0; i < RTE_MAX_MEMSEG; i++) {
234 if (memseg[i].addr == NULL && memseg[i].len == 0) {
235 FSLMC_VFIO_LOG(DEBUG, "Total %d segments found.", i);
239 dma_map.size = memseg[i].len;
240 dma_map.vaddr = memseg[i].addr_64;
241 #ifdef RTE_LIBRTE_DPAA2_USE_PHYS_IOVA
242 dma_map.iova = memseg[i].phys_addr;
244 dma_map.iova = dma_map.vaddr;
247 /* SET DMA MAP for IOMMU */
248 group = &vfio_groups[0];
250 if (!group->container) {
251 FSLMC_VFIO_LOG(ERR, "Container is not connected ");
255 FSLMC_VFIO_LOG(DEBUG, "-->Initial SHM Virtual ADDR %llX",
257 FSLMC_VFIO_LOG(DEBUG, "-----> DMA size 0x%llX", dma_map.size);
258 ret = ioctl(group->container->fd, VFIO_IOMMU_MAP_DMA,
261 FSLMC_VFIO_LOG(ERR, "VFIO_IOMMU_MAP_DMA API(errno = %d)",
267 /* Verifying that at least single segment is available */
269 FSLMC_VFIO_LOG(ERR, "No Segments found for VFIO Mapping");
273 /* TODO - This is a W.A. as VFIO currently does not add the mapping of
274 * the interrupt region to SMMU. This should be removed once the
275 * support is added in the Kernel.
277 vfio_map_irq_region(group);
284 static int64_t vfio_map_mcp_obj(struct fslmc_vfio_group *group, char *mcp_obj)
286 int64_t v_addr = (int64_t)MAP_FAILED;
289 struct vfio_device_info d_info = { .argsz = sizeof(d_info) };
290 struct vfio_region_info reg_info = { .argsz = sizeof(reg_info) };
292 /* getting the mcp object's fd*/
293 mc_fd = ioctl(group->fd, VFIO_GROUP_GET_DEVICE_FD, mcp_obj);
295 FSLMC_VFIO_LOG(ERR, "error in VFIO get dev %s fd from group %d",
300 /* getting device info*/
301 ret = ioctl(mc_fd, VFIO_DEVICE_GET_INFO, &d_info);
303 FSLMC_VFIO_LOG(ERR, "error in VFIO getting DEVICE_INFO");
307 /* getting device region info*/
308 ret = ioctl(mc_fd, VFIO_DEVICE_GET_REGION_INFO, ®_info);
310 FSLMC_VFIO_LOG(ERR, "error in VFIO getting REGION_INFO");
314 FSLMC_VFIO_LOG(DEBUG, "region offset = %llx , region size = %llx",
315 reg_info.offset, reg_info.size);
317 v_addr = (uint64_t)mmap(NULL, reg_info.size,
318 PROT_WRITE | PROT_READ, MAP_SHARED,
319 mc_fd, reg_info.offset);
328 dpaa2_compare_dpaa2_dev(const struct rte_dpaa2_device *dev,
329 const struct rte_dpaa2_device *dev2)
331 /*not the same family device */
332 if (dev->dev_type != DPAA2_MC_DPNI_DEVID ||
333 dev->dev_type != DPAA2_MC_DPSECI_DEVID)
336 if (dev->object_id == dev2->object_id)
343 fslmc_bus_add_device(struct rte_dpaa2_device *dev)
345 struct rte_fslmc_device_list *dev_l;
347 dev_l = &rte_fslmc_bus.device_list;
349 /* device is valid, add in list (sorted) */
350 if (TAILQ_EMPTY(dev_l)) {
351 TAILQ_INSERT_TAIL(dev_l, dev, next);
353 struct rte_dpaa2_device *dev2;
356 TAILQ_FOREACH(dev2, dev_l, next) {
357 ret = dpaa2_compare_dpaa2_dev(dev, dev2);
361 TAILQ_INSERT_BEFORE(dev2, dev, next);
365 TAILQ_INSERT_TAIL(dev_l, dev, next);
369 #define IRQ_SET_BUF_LEN (sizeof(struct vfio_irq_set) + sizeof(int))
371 int rte_dpaa2_intr_enable(struct rte_intr_handle *intr_handle,
374 struct vfio_irq_set *irq_set;
375 char irq_set_buf[IRQ_SET_BUF_LEN];
376 int *fd_ptr, fd, ret;
378 /* Prepare vfio_irq_set structure and SET the IRQ in VFIO */
379 /* Give the eventfd to VFIO */
381 irq_set = (struct vfio_irq_set *)irq_set_buf;
382 irq_set->argsz = sizeof(irq_set_buf);
384 irq_set->flags = VFIO_IRQ_SET_DATA_EVENTFD |
385 VFIO_IRQ_SET_ACTION_TRIGGER;
386 irq_set->index = index;
388 fd_ptr = (int *)&irq_set->data;
391 ret = ioctl(intr_handle->vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
393 FSLMC_VFIO_LOG(ERR, "Unable to set IRQ in VFIO, ret: %d\n",
398 /* Set the FD and update the flags */
399 intr_handle->fd = fd;
403 /* Following function shall fetch total available list of MC devices
404 * from VFIO container & populate private list of devices and other
407 int fslmc_vfio_process_group(void)
409 struct fslmc_vfio_device *vdev;
410 struct vfio_device_info device_info = { .argsz = sizeof(device_info) };
411 char *temp_obj, *object_type, *mcp_obj, *dev_name;
412 int32_t object_id, i, dev_fd, ret;
418 struct fslmc_vfio_group *group = &vfio_groups[0];
419 static int process_once;
421 /* if already done once */
423 FSLMC_VFIO_LOG(DEBUG,
424 "Already scanned once - re-scan not supported");
429 sprintf(path, "/sys/kernel/iommu_groups/%d/devices", group->groupid);
433 FSLMC_VFIO_LOG(ERR, "Unable to open directory %s", path);
437 /*Counting the number of devices in a group and getting the mcp ID*/
440 while ((dir = readdir(d)) != NULL) {
441 if (dir->d_type == DT_LNK) {
443 if (!strncmp("dpmcp", dir->d_name, 5)) {
446 mcp_obj = malloc(sizeof(dir->d_name));
449 "mcp obj:alloc failed");
453 strcpy(mcp_obj, dir->d_name);
454 temp_obj = strtok(dir->d_name, ".");
455 temp_obj = strtok(NULL, ".");
456 sscanf(temp_obj, "%d", &mcp_id);
463 FSLMC_VFIO_LOG(ERR, "DPAA2 MCP Object not Found");
466 RTE_LOG(INFO, EAL, "fslmc: DPRC contains = %d devices\n", ndev_count);
468 /* Allocate the memory depends upon number of objects in a group*/
469 group->vfio_device = (struct fslmc_vfio_device *)malloc(ndev_count *
470 sizeof(struct fslmc_vfio_device));
471 if (!(group->vfio_device)) {
472 FSLMC_VFIO_LOG(ERR, "vfio device: Unable to allocate memory\n");
477 /* Allocate memory for MC Portal list */
478 rte_mcp_ptr_list = malloc(sizeof(void *) * 1);
479 if (!rte_mcp_ptr_list) {
480 FSLMC_VFIO_LOG(ERR, "portal list: Unable to allocate memory!");
485 v_addr = vfio_map_mcp_obj(group, mcp_obj);
487 if (v_addr == (int64_t)MAP_FAILED) {
488 FSLMC_VFIO_LOG(ERR, "Error mapping region (errno = %d)", errno);
492 rte_mcp_ptr_list[0] = (void *)v_addr;
496 FSLMC_VFIO_LOG(ERR, "Unable to open %s Directory", path);
501 /* Parsing each object and initiating them*/
502 while ((dir = readdir(d)) != NULL) {
503 if (dir->d_type != DT_LNK)
505 if (!strncmp("dprc", dir->d_name, 4) ||
506 !strncmp("dpmcp", dir->d_name, 5))
508 dev_name = malloc(sizeof(dir->d_name));
510 FSLMC_VFIO_LOG(ERR, "name: Unable to allocate memory");
513 strcpy(dev_name, dir->d_name);
514 object_type = strtok(dir->d_name, ".");
515 temp_obj = strtok(NULL, ".");
516 sscanf(temp_obj, "%d", &object_id);
518 /* getting the device fd*/
519 dev_fd = ioctl(group->fd, VFIO_GROUP_GET_DEVICE_FD, dev_name);
522 "GET_DEVICE_FD error fd: %s, Group: %d",
523 dev_name, group->fd);
529 vdev = &group->vfio_device[group->object_index++];
533 /* Get Device inofrmation */
534 if (ioctl(vdev->fd, VFIO_DEVICE_GET_INFO, &device_info)) {
535 FSLMC_VFIO_LOG(ERR, "DPAA2 VFIO_DEVICE_GET_INFO fail");
538 if (!strcmp(object_type, "dpni") ||
539 !strcmp(object_type, "dpseci")) {
540 struct rte_dpaa2_device *dev;
542 dev = malloc(sizeof(struct rte_dpaa2_device));
546 memset(dev, 0, sizeof(*dev));
547 /* store hw_id of dpni/dpseci device */
548 dev->object_id = object_id;
549 dev->dev_type = (strcmp(object_type, "dpseci")) ?
550 DPAA2_MC_DPNI_DEVID : DPAA2_MC_DPSECI_DEVID;
552 sprintf(dev->name, "%s.%d", object_type, object_id);
553 dev->device.name = dev->name;
555 fslmc_bus_add_device(dev);
556 FSLMC_VFIO_LOG(DEBUG, "DPAA2: Added %s", dev->name);
558 /* Parse all other objects */
559 struct rte_dpaa2_object *object;
561 TAILQ_FOREACH(object, &fslmc_obj_list, next) {
562 if (!strcmp(object_type, object->name))
563 object->create(vdev, &device_info,
572 ret = dpaa2_affine_qbman_swp();
574 FSLMC_VFIO_LOG(DEBUG, "Error in affining qbman swp %d", ret);
581 if (rte_mcp_ptr_list) {
582 free(rte_mcp_ptr_list);
583 rte_mcp_ptr_list = NULL;
586 free(group->vfio_device);
587 group->vfio_device = NULL;
591 int fslmc_vfio_setup_group(void)
593 struct fslmc_vfio_group *group = NULL;
597 struct vfio_group_status status = { .argsz = sizeof(status) };
599 /* if already done once */
600 if (container_device_fd)
603 container = getenv("DPRC");
605 if (container == NULL) {
606 FSLMC_VFIO_LOG(ERR, "VFIO container not set in env DPRC");
610 /* get group number */
611 ret = vfio_get_group_no(SYSFS_FSL_MC_DEVICES, container, &groupid);
613 RTE_LOG(WARNING, EAL, "%s not managed by VFIO, skipping\n",
618 /* if negative, something failed */
622 FSLMC_VFIO_LOG(DEBUG, "VFIO iommu group id = %d", groupid);
624 /* Check if group already exists */
625 for (i = 0; i < VFIO_MAX_GRP; i++) {
626 group = &vfio_groups[i];
627 if (group->groupid == groupid) {
628 FSLMC_VFIO_LOG(ERR, "groupid already exists %d",
634 /* get the actual group fd */
635 ret = vfio_get_group_fd(groupid);
641 * at this point, we know that this group is viable (meaning,
642 * all devices are either bound to VFIO or not bound to anything)
645 ret = ioctl(group->fd, VFIO_GROUP_GET_STATUS, &status);
647 FSLMC_VFIO_LOG(ERR, " VFIO error getting group status");
652 if (!(status.flags & VFIO_GROUP_FLAGS_VIABLE)) {
653 FSLMC_VFIO_LOG(ERR, "VFIO group not viable");
657 /* Since Group is VIABLE, Store the groupid */
658 group->groupid = groupid;
660 /* check if group does not have a container yet */
661 if (!(status.flags & VFIO_GROUP_FLAGS_CONTAINER_SET)) {
662 /* Now connect this IOMMU group to given container */
663 ret = vfio_connect_container(group);
665 FSLMC_VFIO_LOG(ERR, "VFIO error connecting container"
666 " with groupid %d", groupid);
672 /* Get Device information */
673 ret = ioctl(group->fd, VFIO_GROUP_GET_DEVICE_FD, container);
675 FSLMC_VFIO_LOG(ERR, "VFIO error getting device %s fd from"
676 " group %d", container, group->groupid);
679 container_device_fd = ret;
680 FSLMC_VFIO_LOG(DEBUG, "VFIO Container FD is [0x%X]",
681 container_device_fd);