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_driver.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 "fslmc_logs.h"
37 #include <mc/fsl_dpmng.h>
39 #include "portal/dpaa2_hw_pvt.h"
40 #include "portal/dpaa2_hw_dpio.h"
42 /** Pathname of FSL-MC devices directory. */
43 #define SYSFS_FSL_MC_DEVICES "/sys/bus/fsl-mc/devices"
45 #define FSLMC_CONTAINER_MAX_LEN 8 /**< Of the format dprc.XX */
47 /* Number of VFIO containers & groups with in */
48 static struct fslmc_vfio_group vfio_group;
49 static struct fslmc_vfio_container vfio_container;
50 static int container_device_fd;
51 static char *g_container;
52 static uint32_t *msi_intr_vaddr;
53 void *(*rte_mcp_ptr_list);
54 static int is_dma_done;
56 static struct rte_dpaa2_object_list dpaa2_obj_list =
57 TAILQ_HEAD_INITIALIZER(dpaa2_obj_list);
59 /*register a fslmc bus based dpaa2 driver */
61 rte_fslmc_object_register(struct rte_dpaa2_object *object)
65 TAILQ_INSERT_TAIL(&dpaa2_obj_list, object, next);
69 fslmc_get_container_group(int *groupid)
75 container = getenv("DPRC");
76 if (container == NULL) {
77 DPAA2_BUS_INFO("DPAA2: DPRC not available");
81 if (strlen(container) >= FSLMC_CONTAINER_MAX_LEN) {
82 DPAA2_BUS_ERR("Invalid container name: %s", container);
86 g_container = strdup(container);
88 DPAA2_BUS_ERR("Mem alloc failure; Container name");
93 /* get group number */
94 ret = vfio_get_group_no(SYSFS_FSL_MC_DEVICES, g_container, groupid);
96 DPAA2_BUS_ERR("Unable to find %s IOMMU group", g_container);
100 DPAA2_BUS_DEBUG("Container: %s has VFIO iommu group id = %d",
101 g_container, *groupid);
107 vfio_connect_container(void)
111 if (vfio_container.used) {
112 DPAA2_BUS_DEBUG("No container available");
116 /* Try connecting to vfio container if already created */
117 if (!ioctl(vfio_group.fd, VFIO_GROUP_SET_CONTAINER,
118 &vfio_container.fd)) {
120 "Container pre-exists with FD[0x%x] for this group",
122 vfio_group.container = &vfio_container;
126 /* Opens main vfio file descriptor which represents the "container" */
127 fd = vfio_get_container_fd();
129 DPAA2_BUS_ERR("Failed to open VFIO container");
133 /* Check whether support for SMMU type IOMMU present or not */
134 if (ioctl(fd, VFIO_CHECK_EXTENSION, VFIO_TYPE1_IOMMU)) {
135 /* Connect group to container */
136 ret = ioctl(vfio_group.fd, VFIO_GROUP_SET_CONTAINER, &fd);
138 DPAA2_BUS_ERR("Failed to setup group container");
143 ret = ioctl(fd, VFIO_SET_IOMMU, VFIO_TYPE1_IOMMU);
145 DPAA2_BUS_ERR("Failed to setup VFIO iommu");
150 DPAA2_BUS_ERR("No supported IOMMU available");
155 vfio_container.used = 1;
156 vfio_container.fd = fd;
157 vfio_container.group = &vfio_group;
158 vfio_group.container = &vfio_container;
163 static int vfio_map_irq_region(struct fslmc_vfio_group *group)
166 unsigned long *vaddr = NULL;
167 struct vfio_iommu_type1_dma_map map = {
168 .argsz = sizeof(map),
169 .flags = VFIO_DMA_MAP_FLAG_READ | VFIO_DMA_MAP_FLAG_WRITE,
175 vaddr = (unsigned long *)mmap(NULL, 0x1000, PROT_WRITE |
176 PROT_READ, MAP_SHARED, container_device_fd, 0x6030000);
177 if (vaddr == MAP_FAILED) {
178 DPAA2_BUS_ERR("Unable to map region (errno = %d)", errno);
182 msi_intr_vaddr = (uint32_t *)((char *)(vaddr) + 64);
183 map.vaddr = (unsigned long)vaddr;
184 ret = ioctl(group->container->fd, VFIO_IOMMU_MAP_DMA, &map);
188 DPAA2_BUS_ERR("Unable to map DMA address (errno = %d)", errno);
193 fslmc_vfio_map(const struct rte_memseg *ms, void *arg)
196 struct fslmc_vfio_group *group;
197 struct vfio_iommu_type1_dma_map dma_map = {
198 .argsz = sizeof(struct vfio_iommu_type1_dma_map),
199 .flags = VFIO_DMA_MAP_FLAG_READ | VFIO_DMA_MAP_FLAG_WRITE,
203 dma_map.size = ms->len;
204 dma_map.vaddr = ms->addr_64;
205 #ifdef RTE_LIBRTE_DPAA2_USE_PHYS_IOVA
206 dma_map.iova = ms->iova;
208 dma_map.iova = dma_map.vaddr;
211 /* SET DMA MAP for IOMMU */
214 if (!group->container) {
215 DPAA2_BUS_ERR("Container is not connected ");
219 DPAA2_BUS_DEBUG("-->Initial SHM Virtual ADDR %llX",
221 DPAA2_BUS_DEBUG("-----> DMA size 0x%llX", dma_map.size);
222 ret = ioctl(group->container->fd, VFIO_IOMMU_MAP_DMA,
225 DPAA2_BUS_ERR("VFIO_IOMMU_MAP_DMA API(errno = %d)",
233 int rte_fslmc_vfio_dmamap(void)
235 const struct rte_memseg *memseg;
241 memseg = rte_eal_get_physmem_layout();
242 if (memseg == NULL) {
243 DPAA2_BUS_ERR("Cannot get physical layout");
247 if (rte_memseg_walk(fslmc_vfio_map, &i) < 0)
250 /* Verifying that at least single segment is available */
252 DPAA2_BUS_ERR("No Segments found for VFIO Mapping");
255 DPAA2_BUS_DEBUG("Total %d segments found.", i);
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(&vfio_group);
268 static int64_t vfio_map_mcp_obj(struct fslmc_vfio_group *group, char *mcp_obj)
270 intptr_t v_addr = (intptr_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 DPAA2_BUS_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 DPAA2_BUS_ERR("Error in VFIO getting DEVICE_INFO");
291 /* getting device region info*/
292 ret = ioctl(mc_fd, VFIO_DEVICE_GET_REGION_INFO, ®_info);
294 DPAA2_BUS_ERR("Error in VFIO getting REGION_INFO");
298 DPAA2_BUS_DEBUG("Region offset = %llx , region size = %llx",
299 reg_info.offset, reg_info.size);
301 v_addr = (size_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 DPAA2_BUS_ERR("Error:dpaa2 SET IRQs fd=%d, err = %d(%s)",
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",
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);
383 DPAA2_BUS_ERR("Cannot get IRQ(%d) info, error %i (%s)",
384 i, errno, strerror(errno));
388 /* if this vector cannot be used with eventfd,
389 * fail if we explicitly
390 * specified interrupt type, otherwise continue
392 if ((irq_info.flags & VFIO_IRQ_INFO_EVENTFD) == 0)
395 /* set up an eventfd for interrupts */
396 fd = eventfd(0, EFD_NONBLOCK | EFD_CLOEXEC);
398 DPAA2_BUS_ERR("Cannot set up eventfd, error %i (%s)",
399 errno, strerror(errno));
403 intr_handle->fd = fd;
404 intr_handle->type = RTE_INTR_HANDLE_VFIO_MSI;
405 intr_handle->vfio_dev_fd = vfio_dev_fd;
410 /* if we're here, we haven't found a suitable interrupt vector */
415 * fslmc_process_iodevices for processing only IO (ETH, CRYPTO, and possibly
419 fslmc_process_iodevices(struct rte_dpaa2_device *dev)
422 struct vfio_device_info device_info = { .argsz = sizeof(device_info) };
423 struct rte_dpaa2_object *object = NULL;
425 dev_fd = ioctl(vfio_group.fd, VFIO_GROUP_GET_DEVICE_FD,
428 DPAA2_BUS_ERR("Unable to obtain device FD for device:%s",
433 if (ioctl(dev_fd, VFIO_DEVICE_GET_INFO, &device_info)) {
434 DPAA2_BUS_ERR("Unable to obtain information for device:%s",
439 switch (dev->dev_type) {
441 rte_dpaa2_vfio_setup_intr(&dev->intr_handle, dev_fd,
442 device_info.num_irqs);
448 TAILQ_FOREACH(object, &dpaa2_obj_list, next) {
449 if (dev->dev_type == object->dev_type)
450 object->create(dev_fd, &device_info,
460 DPAA2_BUS_DEBUG("Device (%s) abstracted from VFIO",
466 fslmc_process_mcp(struct rte_dpaa2_device *dev)
470 struct fsl_mc_io dpmng = {0};
471 struct mc_version mc_ver_info = {0};
473 rte_mcp_ptr_list = malloc(sizeof(void *) * 1);
474 if (!rte_mcp_ptr_list) {
475 DPAA2_BUS_ERR("Unable to allocate MC portal memory");
479 dev_name = strdup(dev->device.name);
481 DPAA2_BUS_ERR("Unable to allocate MC device name memory");
482 free(rte_mcp_ptr_list);
483 rte_mcp_ptr_list = NULL;
487 v_addr = vfio_map_mcp_obj(&vfio_group, dev_name);
488 if (v_addr == (intptr_t)MAP_FAILED) {
489 DPAA2_BUS_ERR("Error mapping region (errno = %d)", errno);
490 free(rte_mcp_ptr_list);
491 rte_mcp_ptr_list = NULL;
495 /* check the MC version compatibility */
496 dpmng.regs = (void *)v_addr;
497 if (mc_get_version(&dpmng, CMD_PRI_LOW, &mc_ver_info)) {
498 DPAA2_BUS_ERR("Unable to obtain MC version");
502 if ((mc_ver_info.major != MC_VER_MAJOR) ||
503 (mc_ver_info.minor < MC_VER_MINOR)) {
504 DPAA2_BUS_ERR("DPAA2 MC version not compatible!"
505 " Expected %d.%d.x, Detected %d.%d.%d",
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 DPAA2_BUS_ERR("Unable to map MC 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 DPAA2_BUS_ERR("No MC Portal device found. Not continuing");
551 TAILQ_FOREACH_SAFE(dev, &rte_fslmc_bus.device_list, next, dev_temp) {
555 switch (dev->dev_type) {
558 ret = fslmc_process_iodevices(dev);
560 DPAA2_BUS_DEBUG("Dev (%s) init failed",
569 /* Call the object creation routine and remove the
570 * device entry from device list
572 ret = fslmc_process_iodevices(dev);
574 DPAA2_BUS_DEBUG("Dev (%s) init failed",
579 /* This device is not required to be in the DPDK
580 * exposed device list.
582 TAILQ_REMOVE(&rte_fslmc_bus.device_list, dev, next);
588 /* Unknown - ignore */
589 DPAA2_BUS_DEBUG("Found unknown device (%s)",
591 TAILQ_REMOVE(&rte_fslmc_bus.device_list, dev, next);
601 fslmc_vfio_setup_group(void)
605 struct vfio_group_status status = { .argsz = sizeof(status) };
607 /* if already done once */
608 if (container_device_fd)
611 ret = fslmc_get_container_group(&groupid);
615 /* In case this group was already opened, continue without any
618 if (vfio_group.groupid == groupid) {
619 DPAA2_BUS_ERR("groupid already exists %d", groupid);
623 /* Get the actual group fd */
624 ret = vfio_get_group_fd(groupid);
629 /* Check group viability */
630 ret = ioctl(vfio_group.fd, VFIO_GROUP_GET_STATUS, &status);
632 DPAA2_BUS_ERR("VFIO error getting group status");
633 close(vfio_group.fd);
634 rte_vfio_clear_group(vfio_group.fd);
638 if (!(status.flags & VFIO_GROUP_FLAGS_VIABLE)) {
639 DPAA2_BUS_ERR("VFIO group not viable");
640 close(vfio_group.fd);
641 rte_vfio_clear_group(vfio_group.fd);
644 /* Since Group is VIABLE, Store the groupid */
645 vfio_group.groupid = groupid;
647 /* check if group does not have a container yet */
648 if (!(status.flags & VFIO_GROUP_FLAGS_CONTAINER_SET)) {
649 /* Now connect this IOMMU group to given container */
650 ret = vfio_connect_container();
653 "Error connecting container with groupid %d",
655 close(vfio_group.fd);
656 rte_vfio_clear_group(vfio_group.fd);
661 /* Get Device information */
662 ret = ioctl(vfio_group.fd, VFIO_GROUP_GET_DEVICE_FD, g_container);
664 DPAA2_BUS_ERR("Error getting device %s fd from group %d",
665 g_container, vfio_group.groupid);
666 close(vfio_group.fd);
667 rte_vfio_clear_group(vfio_group.fd);
670 container_device_fd = ret;
671 DPAA2_BUS_DEBUG("VFIO Container FD is [0x%X]",
672 container_device_fd);