1 /* SPDX-License-Identifier: BSD-3-Clause
3 * Copyright (c) 2015-2016 Freescale Semiconductor, Inc. All rights reserved.
10 #include <sys/types.h>
15 #include <sys/ioctl.h>
21 #include <sys/eventfd.h>
23 #include <eal_filesystem.h>
25 #include <rte_ethdev.h>
26 #include <rte_malloc.h>
27 #include <rte_memcpy.h>
28 #include <rte_string_fns.h>
29 #include <rte_cycles.h>
30 #include <rte_kvargs.h>
34 #include "rte_fslmc.h"
35 #include "fslmc_vfio.h"
36 #include <mc/fsl_dpmng.h>
38 #include "portal/dpaa2_hw_pvt.h"
39 #include "portal/dpaa2_hw_dpio.h"
41 #define FSLMC_VFIO_LOG(level, fmt, args...) \
42 RTE_LOG(level, EAL, fmt "\n", ##args)
44 /** Pathname of FSL-MC devices directory. */
45 #define SYSFS_FSL_MC_DEVICES "/sys/bus/fsl-mc/devices"
47 #define FSLMC_CONTAINER_MAX_LEN 8 /**< Of the format dprc.XX */
49 /* Number of VFIO containers & groups with in */
50 static struct fslmc_vfio_group vfio_group;
51 static struct fslmc_vfio_container vfio_container;
52 static int container_device_fd;
53 static char *g_container;
54 static uint32_t *msi_intr_vaddr;
55 void *(*rte_mcp_ptr_list);
56 static int is_dma_done;
58 static struct rte_dpaa2_object_list dpaa2_obj_list =
59 TAILQ_HEAD_INITIALIZER(dpaa2_obj_list);
61 /*register a fslmc bus based dpaa2 driver */
63 rte_fslmc_object_register(struct rte_dpaa2_object *object)
67 TAILQ_INSERT_TAIL(&dpaa2_obj_list, object, next);
71 fslmc_get_container_group(int *groupid)
77 container = getenv("DPRC");
78 if (container == NULL) {
79 RTE_LOG(WARNING, EAL, "DPAA2: DPRC not available\n");
83 if (strlen(container) >= FSLMC_CONTAINER_MAX_LEN) {
84 FSLMC_VFIO_LOG(ERR, "Invalid container name: %s\n",
89 g_container = strdup(container);
91 FSLMC_VFIO_LOG(ERR, "Out of memory.");
96 /* get group number */
97 ret = vfio_get_group_no(SYSFS_FSL_MC_DEVICES, g_container, groupid);
99 FSLMC_VFIO_LOG(ERR, "Unable to find %s IOMMU group",
104 FSLMC_VFIO_LOG(DEBUG, "Container: %s has VFIO iommu group id = %d",
105 g_container, *groupid);
111 vfio_connect_container(void)
115 if (vfio_container.used) {
116 FSLMC_VFIO_LOG(DEBUG, "No container available.");
120 /* Try connecting to vfio container if already created */
121 if (!ioctl(vfio_group.fd, VFIO_GROUP_SET_CONTAINER,
122 &vfio_container.fd)) {
124 "Container pre-exists with FD[0x%x] for this group",
126 vfio_group.container = &vfio_container;
130 /* Opens main vfio file descriptor which represents the "container" */
131 fd = vfio_get_container_fd();
133 FSLMC_VFIO_LOG(ERR, "Failed to open VFIO container");
137 /* Check whether support for SMMU type IOMMU present or not */
138 if (ioctl(fd, VFIO_CHECK_EXTENSION, VFIO_TYPE1_IOMMU)) {
139 /* Connect group to container */
140 ret = ioctl(vfio_group.fd, VFIO_GROUP_SET_CONTAINER, &fd);
142 FSLMC_VFIO_LOG(ERR, "Failed to setup group container");
147 ret = ioctl(fd, VFIO_SET_IOMMU, VFIO_TYPE1_IOMMU);
149 FSLMC_VFIO_LOG(ERR, "Failed to setup VFIO iommu");
154 FSLMC_VFIO_LOG(ERR, "No supported IOMMU available");
159 vfio_container.used = 1;
160 vfio_container.fd = fd;
161 vfio_container.group = &vfio_group;
162 vfio_group.container = &vfio_container;
167 static int vfio_map_irq_region(struct fslmc_vfio_group *group)
170 unsigned long *vaddr = NULL;
171 struct vfio_iommu_type1_dma_map map = {
172 .argsz = sizeof(map),
173 .flags = VFIO_DMA_MAP_FLAG_READ | VFIO_DMA_MAP_FLAG_WRITE,
179 vaddr = (unsigned long *)mmap(NULL, 0x1000, PROT_WRITE |
180 PROT_READ, MAP_SHARED, container_device_fd, 0x6030000);
181 if (vaddr == MAP_FAILED) {
182 FSLMC_VFIO_LOG(ERR, "Unable to map region (errno = %d)", errno);
186 msi_intr_vaddr = (uint32_t *)((char *)(vaddr) + 64);
187 map.vaddr = (unsigned long)vaddr;
188 ret = ioctl(group->container->fd, VFIO_IOMMU_MAP_DMA, &map);
192 FSLMC_VFIO_LOG(ERR, "VFIO_IOMMU_MAP_DMA fails (errno = %d)", errno);
196 int rte_fslmc_vfio_dmamap(void)
199 struct fslmc_vfio_group *group;
200 struct vfio_iommu_type1_dma_map dma_map = {
201 .argsz = sizeof(struct vfio_iommu_type1_dma_map),
202 .flags = VFIO_DMA_MAP_FLAG_READ | VFIO_DMA_MAP_FLAG_WRITE,
206 const struct rte_memseg *memseg;
211 memseg = rte_eal_get_physmem_layout();
212 if (memseg == NULL) {
213 FSLMC_VFIO_LOG(ERR, "Cannot get physical layout.");
217 for (i = 0; i < RTE_MAX_MEMSEG; i++) {
218 if (memseg[i].addr == NULL && memseg[i].len == 0) {
219 FSLMC_VFIO_LOG(DEBUG, "Total %d segments found.", i);
223 dma_map.size = memseg[i].len;
224 dma_map.vaddr = memseg[i].addr_64;
225 #ifdef RTE_LIBRTE_DPAA2_USE_PHYS_IOVA
226 dma_map.iova = memseg[i].phys_addr;
228 dma_map.iova = dma_map.vaddr;
231 /* SET DMA MAP for IOMMU */
234 if (!group->container) {
235 FSLMC_VFIO_LOG(ERR, "Container is not connected ");
239 FSLMC_VFIO_LOG(DEBUG, "-->Initial SHM Virtual ADDR %llX",
241 FSLMC_VFIO_LOG(DEBUG, "-----> DMA size 0x%llX", dma_map.size);
242 ret = ioctl(group->container->fd, VFIO_IOMMU_MAP_DMA,
245 FSLMC_VFIO_LOG(ERR, "VFIO_IOMMU_MAP_DMA API(errno = %d)",
251 /* Verifying that at least single segment is available */
253 FSLMC_VFIO_LOG(ERR, "No Segments found for VFIO Mapping");
257 /* TODO - This is a W.A. as VFIO currently does not add the mapping of
258 * the interrupt region to SMMU. This should be removed once the
259 * support is added in the Kernel.
261 vfio_map_irq_region(group);
268 static int64_t vfio_map_mcp_obj(struct fslmc_vfio_group *group, char *mcp_obj)
270 int64_t v_addr = (int64_t)MAP_FAILED;
273 struct vfio_device_info d_info = { .argsz = sizeof(d_info) };
274 struct vfio_region_info reg_info = { .argsz = sizeof(reg_info) };
276 /* getting the mcp object's fd*/
277 mc_fd = ioctl(group->fd, VFIO_GROUP_GET_DEVICE_FD, mcp_obj);
279 FSLMC_VFIO_LOG(ERR, "error in VFIO get dev %s fd from group %d",
284 /* getting device info*/
285 ret = ioctl(mc_fd, VFIO_DEVICE_GET_INFO, &d_info);
287 FSLMC_VFIO_LOG(ERR, "error in VFIO getting DEVICE_INFO");
291 /* getting device region info*/
292 ret = ioctl(mc_fd, VFIO_DEVICE_GET_REGION_INFO, ®_info);
294 FSLMC_VFIO_LOG(ERR, "error in VFIO getting REGION_INFO");
298 FSLMC_VFIO_LOG(DEBUG, "region offset = %llx , region size = %llx",
299 reg_info.offset, reg_info.size);
301 v_addr = (uint64_t)mmap(NULL, reg_info.size,
302 PROT_WRITE | PROT_READ, MAP_SHARED,
303 mc_fd, reg_info.offset);
311 #define IRQ_SET_BUF_LEN (sizeof(struct vfio_irq_set) + sizeof(int))
313 int rte_dpaa2_intr_enable(struct rte_intr_handle *intr_handle, int index)
316 char irq_set_buf[IRQ_SET_BUF_LEN];
317 struct vfio_irq_set *irq_set;
320 len = sizeof(irq_set_buf);
322 irq_set = (struct vfio_irq_set *)irq_set_buf;
323 irq_set->argsz = len;
326 VFIO_IRQ_SET_DATA_EVENTFD | VFIO_IRQ_SET_ACTION_TRIGGER;
327 irq_set->index = index;
329 fd_ptr = (int *)&irq_set->data;
330 *fd_ptr = intr_handle->fd;
332 ret = ioctl(intr_handle->vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
334 RTE_LOG(ERR, EAL, "Error:dpaa2 SET IRQs fd=%d, err = %d(%s)\n",
335 intr_handle->fd, errno, strerror(errno));
342 int rte_dpaa2_intr_disable(struct rte_intr_handle *intr_handle, int index)
344 struct vfio_irq_set *irq_set;
345 char irq_set_buf[IRQ_SET_BUF_LEN];
348 len = sizeof(struct vfio_irq_set);
350 irq_set = (struct vfio_irq_set *)irq_set_buf;
351 irq_set->argsz = len;
352 irq_set->flags = VFIO_IRQ_SET_DATA_NONE | VFIO_IRQ_SET_ACTION_TRIGGER;
353 irq_set->index = index;
357 ret = ioctl(intr_handle->vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
360 "Error disabling dpaa2 interrupts for fd %d\n",
366 /* set up interrupt support (but not enable interrupts) */
368 rte_dpaa2_vfio_setup_intr(struct rte_intr_handle *intr_handle,
374 /* start from MSI-X interrupt type */
375 for (i = 0; i < num_irqs; i++) {
376 struct vfio_irq_info irq_info = { .argsz = sizeof(irq_info) };
381 ret = ioctl(vfio_dev_fd, VFIO_DEVICE_GET_IRQ_INFO, &irq_info);
384 "cannot get IRQ(%d) info, error %i (%s)",
385 i, errno, strerror(errno));
389 /* if this vector cannot be used with eventfd,
390 * fail if we explicitly
391 * specified interrupt type, otherwise continue
393 if ((irq_info.flags & VFIO_IRQ_INFO_EVENTFD) == 0)
396 /* set up an eventfd for interrupts */
397 fd = eventfd(0, EFD_NONBLOCK | EFD_CLOEXEC);
400 "cannot set up eventfd, error %i (%s)\n",
401 errno, strerror(errno));
405 intr_handle->fd = fd;
406 intr_handle->type = RTE_INTR_HANDLE_VFIO_MSI;
407 intr_handle->vfio_dev_fd = vfio_dev_fd;
412 /* if we're here, we haven't found a suitable interrupt vector */
417 * fslmc_process_iodevices for processing only IO (ETH, CRYPTO, and possibly
421 fslmc_process_iodevices(struct rte_dpaa2_device *dev)
424 struct vfio_device_info device_info = { .argsz = sizeof(device_info) };
425 struct rte_dpaa2_object *object = NULL;
427 dev_fd = ioctl(vfio_group.fd, VFIO_GROUP_GET_DEVICE_FD,
430 FSLMC_VFIO_LOG(ERR, "Unable to obtain device FD for device:%s",
435 if (ioctl(dev_fd, VFIO_DEVICE_GET_INFO, &device_info)) {
436 FSLMC_VFIO_LOG(ERR, "DPAA2 VFIO_DEVICE_GET_INFO fail");
440 switch (dev->dev_type) {
442 rte_dpaa2_vfio_setup_intr(&dev->intr_handle, dev_fd,
443 device_info.num_irqs);
449 TAILQ_FOREACH(object, &dpaa2_obj_list, next) {
450 if (dev->dev_type == object->dev_type)
451 object->create(dev_fd, &device_info,
461 FSLMC_VFIO_LOG(DEBUG, "Device (%s) abstracted from VFIO",
467 fslmc_process_mcp(struct rte_dpaa2_device *dev)
471 struct fsl_mc_io dpmng = {0};
472 struct mc_version mc_ver_info = {0};
474 rte_mcp_ptr_list = malloc(sizeof(void *) * 1);
475 if (!rte_mcp_ptr_list) {
476 FSLMC_VFIO_LOG(ERR, "Out of memory");
480 dev_name = strdup(dev->device.name);
482 FSLMC_VFIO_LOG(ERR, "Out of memory.");
483 free(rte_mcp_ptr_list);
484 rte_mcp_ptr_list = NULL;
488 v_addr = vfio_map_mcp_obj(&vfio_group, dev_name);
489 if (v_addr == (int64_t)MAP_FAILED) {
490 FSLMC_VFIO_LOG(ERR, "Error mapping region (errno = %d)",
492 free(rte_mcp_ptr_list);
493 rte_mcp_ptr_list = NULL;
497 /* check the MC version compatibility */
498 dpmng.regs = (void *)v_addr;
499 if (mc_get_version(&dpmng, CMD_PRI_LOW, &mc_ver_info))
500 RTE_LOG(WARNING, PMD, "\tmc_get_version failed\n");
502 if ((mc_ver_info.major != MC_VER_MAJOR) ||
503 (mc_ver_info.minor < MC_VER_MINOR)) {
504 RTE_LOG(ERR, PMD, "DPAA2 MC version not compatible!"
505 " Expected %d.%d.x, Detected %d.%d.%d\n",
506 MC_VER_MAJOR, MC_VER_MINOR,
507 mc_ver_info.major, mc_ver_info.minor,
508 mc_ver_info.revision);
509 free(rte_mcp_ptr_list);
510 rte_mcp_ptr_list = NULL;
513 rte_mcp_ptr_list[0] = (void *)v_addr;
519 fslmc_vfio_process_group(void)
522 int found_mportal = 0;
523 struct rte_dpaa2_device *dev, *dev_temp;
525 /* Search the MCP as that should be initialized first. */
526 TAILQ_FOREACH_SAFE(dev, &rte_fslmc_bus.device_list, next, dev_temp) {
527 if (dev->dev_type == DPAA2_MPORTAL) {
528 ret = fslmc_process_mcp(dev);
530 FSLMC_VFIO_LOG(DEBUG, "Unable to map Portal.");
536 TAILQ_REMOVE(&rte_fslmc_bus.device_list, dev, next);
539 /* Ideally there is only a single dpmcp, but in case
540 * multiple exists, looping on remaining devices.
545 /* Cannot continue if there is not even a single mportal */
546 if (!found_mportal) {
547 FSLMC_VFIO_LOG(DEBUG,
548 "No MC Portal device found. Not continuing.");
552 TAILQ_FOREACH_SAFE(dev, &rte_fslmc_bus.device_list, next, dev_temp) {
556 switch (dev->dev_type) {
559 ret = fslmc_process_iodevices(dev);
561 FSLMC_VFIO_LOG(DEBUG,
562 "Dev (%s) init failed.",
571 /* Call the object creation routine and remove the
572 * device entry from device list
574 ret = fslmc_process_iodevices(dev);
576 FSLMC_VFIO_LOG(DEBUG,
577 "Dev (%s) init failed.",
582 /* This device is not required to be in the DPDK
583 * exposed device list.
585 TAILQ_REMOVE(&rte_fslmc_bus.device_list, dev, next);
591 /* Unknown - ignore */
592 FSLMC_VFIO_LOG(DEBUG, "Found unknown device (%s).",
594 TAILQ_REMOVE(&rte_fslmc_bus.device_list, dev, next);
604 fslmc_vfio_setup_group(void)
608 struct vfio_group_status status = { .argsz = sizeof(status) };
610 /* if already done once */
611 if (container_device_fd)
614 ret = fslmc_get_container_group(&groupid);
618 /* In case this group was already opened, continue without any
621 if (vfio_group.groupid == groupid) {
622 FSLMC_VFIO_LOG(ERR, "groupid already exists %d", groupid);
626 /* Get the actual group fd */
627 ret = vfio_get_group_fd(groupid);
632 /* Check group viability */
633 ret = ioctl(vfio_group.fd, VFIO_GROUP_GET_STATUS, &status);
635 FSLMC_VFIO_LOG(ERR, "VFIO error getting group status");
636 close(vfio_group.fd);
640 if (!(status.flags & VFIO_GROUP_FLAGS_VIABLE)) {
641 FSLMC_VFIO_LOG(ERR, "VFIO group not viable");
642 close(vfio_group.fd);
645 /* Since Group is VIABLE, Store the groupid */
646 vfio_group.groupid = groupid;
648 /* check if group does not have a container yet */
649 if (!(status.flags & VFIO_GROUP_FLAGS_CONTAINER_SET)) {
650 /* Now connect this IOMMU group to given container */
651 ret = vfio_connect_container();
654 "Error connecting container with groupid %d",
656 close(vfio_group.fd);
661 /* Get Device information */
662 ret = ioctl(vfio_group.fd, VFIO_GROUP_GET_DEVICE_FD, g_container);
664 FSLMC_VFIO_LOG(ERR, "Error getting device %s fd from group %d",
665 g_container, vfio_group.groupid);
666 close(vfio_group.fd);
669 container_device_fd = ret;
670 FSLMC_VFIO_LOG(DEBUG, "VFIO Container FD is [0x%X]",
671 container_device_fd);