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 if (rte_eal_iova_mode() == RTE_IOVA_VA)
227 dma_map.iova = dma_map.vaddr;
229 dma_map.iova = memseg[i].iova;
231 dma_map.iova = dma_map.vaddr;
234 /* SET DMA MAP for IOMMU */
237 if (!group->container) {
238 FSLMC_VFIO_LOG(ERR, "Container is not connected ");
242 FSLMC_VFIO_LOG(DEBUG, "-->Initial SHM Virtual ADDR %llX",
244 FSLMC_VFIO_LOG(DEBUG, "-----> DMA size 0x%llX", dma_map.size);
245 ret = ioctl(group->container->fd, VFIO_IOMMU_MAP_DMA,
248 FSLMC_VFIO_LOG(ERR, "VFIO_IOMMU_MAP_DMA API(errno = %d)",
254 /* Verifying that at least single segment is available */
256 FSLMC_VFIO_LOG(ERR, "No Segments found for VFIO Mapping");
260 /* TODO - This is a W.A. as VFIO currently does not add the mapping of
261 * the interrupt region to SMMU. This should be removed once the
262 * support is added in the Kernel.
264 vfio_map_irq_region(group);
271 static int64_t vfio_map_mcp_obj(struct fslmc_vfio_group *group, char *mcp_obj)
273 int64_t v_addr = (int64_t)MAP_FAILED;
276 struct vfio_device_info d_info = { .argsz = sizeof(d_info) };
277 struct vfio_region_info reg_info = { .argsz = sizeof(reg_info) };
279 /* getting the mcp object's fd*/
280 mc_fd = ioctl(group->fd, VFIO_GROUP_GET_DEVICE_FD, mcp_obj);
282 FSLMC_VFIO_LOG(ERR, "error in VFIO get dev %s fd from group %d",
287 /* getting device info*/
288 ret = ioctl(mc_fd, VFIO_DEVICE_GET_INFO, &d_info);
290 FSLMC_VFIO_LOG(ERR, "error in VFIO getting DEVICE_INFO");
294 /* getting device region info*/
295 ret = ioctl(mc_fd, VFIO_DEVICE_GET_REGION_INFO, ®_info);
297 FSLMC_VFIO_LOG(ERR, "error in VFIO getting REGION_INFO");
301 FSLMC_VFIO_LOG(DEBUG, "region offset = %llx , region size = %llx",
302 reg_info.offset, reg_info.size);
304 v_addr = (uint64_t)mmap(NULL, reg_info.size,
305 PROT_WRITE | PROT_READ, MAP_SHARED,
306 mc_fd, reg_info.offset);
314 #define IRQ_SET_BUF_LEN (sizeof(struct vfio_irq_set) + sizeof(int))
316 int rte_dpaa2_intr_enable(struct rte_intr_handle *intr_handle, int index)
319 char irq_set_buf[IRQ_SET_BUF_LEN];
320 struct vfio_irq_set *irq_set;
323 len = sizeof(irq_set_buf);
325 irq_set = (struct vfio_irq_set *)irq_set_buf;
326 irq_set->argsz = len;
329 VFIO_IRQ_SET_DATA_EVENTFD | VFIO_IRQ_SET_ACTION_TRIGGER;
330 irq_set->index = index;
332 fd_ptr = (int *)&irq_set->data;
333 *fd_ptr = intr_handle->fd;
335 ret = ioctl(intr_handle->vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
337 RTE_LOG(ERR, EAL, "Error:dpaa2 SET IRQs fd=%d, err = %d(%s)\n",
338 intr_handle->fd, errno, strerror(errno));
345 int rte_dpaa2_intr_disable(struct rte_intr_handle *intr_handle, int index)
347 struct vfio_irq_set *irq_set;
348 char irq_set_buf[IRQ_SET_BUF_LEN];
351 len = sizeof(struct vfio_irq_set);
353 irq_set = (struct vfio_irq_set *)irq_set_buf;
354 irq_set->argsz = len;
355 irq_set->flags = VFIO_IRQ_SET_DATA_NONE | VFIO_IRQ_SET_ACTION_TRIGGER;
356 irq_set->index = index;
360 ret = ioctl(intr_handle->vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
363 "Error disabling dpaa2 interrupts for fd %d\n",
369 /* set up interrupt support (but not enable interrupts) */
371 rte_dpaa2_vfio_setup_intr(struct rte_intr_handle *intr_handle,
377 /* start from MSI-X interrupt type */
378 for (i = 0; i < num_irqs; i++) {
379 struct vfio_irq_info irq_info = { .argsz = sizeof(irq_info) };
384 ret = ioctl(vfio_dev_fd, VFIO_DEVICE_GET_IRQ_INFO, &irq_info);
387 "cannot get IRQ(%d) info, error %i (%s)",
388 i, errno, strerror(errno));
392 /* if this vector cannot be used with eventfd,
393 * fail if we explicitly
394 * specified interrupt type, otherwise continue
396 if ((irq_info.flags & VFIO_IRQ_INFO_EVENTFD) == 0)
399 /* set up an eventfd for interrupts */
400 fd = eventfd(0, EFD_NONBLOCK | EFD_CLOEXEC);
403 "cannot set up eventfd, error %i (%s)\n",
404 errno, strerror(errno));
408 intr_handle->fd = fd;
409 intr_handle->type = RTE_INTR_HANDLE_VFIO_MSI;
410 intr_handle->vfio_dev_fd = vfio_dev_fd;
415 /* if we're here, we haven't found a suitable interrupt vector */
420 * fslmc_process_iodevices for processing only IO (ETH, CRYPTO, and possibly
424 fslmc_process_iodevices(struct rte_dpaa2_device *dev)
427 struct vfio_device_info device_info = { .argsz = sizeof(device_info) };
428 struct rte_dpaa2_object *object = NULL;
430 dev_fd = ioctl(vfio_group.fd, VFIO_GROUP_GET_DEVICE_FD,
433 FSLMC_VFIO_LOG(ERR, "Unable to obtain device FD for device:%s",
438 if (ioctl(dev_fd, VFIO_DEVICE_GET_INFO, &device_info)) {
439 FSLMC_VFIO_LOG(ERR, "DPAA2 VFIO_DEVICE_GET_INFO fail");
443 switch (dev->dev_type) {
445 rte_dpaa2_vfio_setup_intr(&dev->intr_handle, dev_fd,
446 device_info.num_irqs);
452 TAILQ_FOREACH(object, &dpaa2_obj_list, next) {
453 if (dev->dev_type == object->dev_type)
454 object->create(dev_fd, &device_info,
464 FSLMC_VFIO_LOG(DEBUG, "Device (%s) abstracted from VFIO",
470 fslmc_process_mcp(struct rte_dpaa2_device *dev)
474 struct fsl_mc_io dpmng = {0};
475 struct mc_version mc_ver_info = {0};
477 rte_mcp_ptr_list = malloc(sizeof(void *) * 1);
478 if (!rte_mcp_ptr_list) {
479 FSLMC_VFIO_LOG(ERR, "Out of memory");
483 dev_name = strdup(dev->device.name);
485 FSLMC_VFIO_LOG(ERR, "Out of memory.");
486 free(rte_mcp_ptr_list);
487 rte_mcp_ptr_list = NULL;
491 v_addr = vfio_map_mcp_obj(&vfio_group, dev_name);
492 if (v_addr == (int64_t)MAP_FAILED) {
493 FSLMC_VFIO_LOG(ERR, "Error mapping region (errno = %d)",
495 free(rte_mcp_ptr_list);
496 rte_mcp_ptr_list = NULL;
500 /* check the MC version compatibility */
501 dpmng.regs = (void *)v_addr;
502 if (mc_get_version(&dpmng, CMD_PRI_LOW, &mc_ver_info))
503 RTE_LOG(WARNING, PMD, "\tmc_get_version failed\n");
505 if ((mc_ver_info.major != MC_VER_MAJOR) ||
506 (mc_ver_info.minor < MC_VER_MINOR)) {
507 RTE_LOG(ERR, PMD, "DPAA2 MC version not compatible!"
508 " Expected %d.%d.x, Detected %d.%d.%d\n",
509 MC_VER_MAJOR, MC_VER_MINOR,
510 mc_ver_info.major, mc_ver_info.minor,
511 mc_ver_info.revision);
512 free(rte_mcp_ptr_list);
513 rte_mcp_ptr_list = NULL;
516 rte_mcp_ptr_list[0] = (void *)v_addr;
522 fslmc_vfio_process_group(void)
525 int found_mportal = 0;
526 struct rte_dpaa2_device *dev, *dev_temp;
528 /* Search the MCP as that should be initialized first. */
529 TAILQ_FOREACH_SAFE(dev, &rte_fslmc_bus.device_list, next, dev_temp) {
530 if (dev->dev_type == DPAA2_MPORTAL) {
531 ret = fslmc_process_mcp(dev);
533 FSLMC_VFIO_LOG(DEBUG, "Unable to map Portal.");
539 TAILQ_REMOVE(&rte_fslmc_bus.device_list, dev, next);
542 /* Ideally there is only a single dpmcp, but in case
543 * multiple exists, looping on remaining devices.
548 /* Cannot continue if there is not even a single mportal */
549 if (!found_mportal) {
550 FSLMC_VFIO_LOG(DEBUG,
551 "No MC Portal device found. Not continuing.");
555 TAILQ_FOREACH_SAFE(dev, &rte_fslmc_bus.device_list, next, dev_temp) {
559 switch (dev->dev_type) {
562 ret = fslmc_process_iodevices(dev);
564 FSLMC_VFIO_LOG(DEBUG,
565 "Dev (%s) init failed.",
574 /* Call the object creation routine and remove the
575 * device entry from device list
577 ret = fslmc_process_iodevices(dev);
579 FSLMC_VFIO_LOG(DEBUG,
580 "Dev (%s) init failed.",
585 /* This device is not required to be in the DPDK
586 * exposed device list.
588 TAILQ_REMOVE(&rte_fslmc_bus.device_list, dev, next);
594 /* Unknown - ignore */
595 FSLMC_VFIO_LOG(DEBUG, "Found unknown device (%s).",
597 TAILQ_REMOVE(&rte_fslmc_bus.device_list, dev, next);
607 fslmc_vfio_setup_group(void)
611 struct vfio_group_status status = { .argsz = sizeof(status) };
613 /* if already done once */
614 if (container_device_fd)
617 ret = fslmc_get_container_group(&groupid);
621 /* In case this group was already opened, continue without any
624 if (vfio_group.groupid == groupid) {
625 FSLMC_VFIO_LOG(ERR, "groupid already exists %d", groupid);
629 /* Get the actual group fd */
630 ret = vfio_get_group_fd(groupid);
635 /* Check group viability */
636 ret = ioctl(vfio_group.fd, VFIO_GROUP_GET_STATUS, &status);
638 FSLMC_VFIO_LOG(ERR, "VFIO error getting group status");
639 close(vfio_group.fd);
640 rte_vfio_clear_group(vfio_group.fd);
644 if (!(status.flags & VFIO_GROUP_FLAGS_VIABLE)) {
645 FSLMC_VFIO_LOG(ERR, "VFIO group not viable");
646 close(vfio_group.fd);
647 rte_vfio_clear_group(vfio_group.fd);
650 /* Since Group is VIABLE, Store the groupid */
651 vfio_group.groupid = groupid;
653 /* check if group does not have a container yet */
654 if (!(status.flags & VFIO_GROUP_FLAGS_CONTAINER_SET)) {
655 /* Now connect this IOMMU group to given container */
656 ret = vfio_connect_container();
659 "Error connecting container with groupid %d",
661 close(vfio_group.fd);
662 rte_vfio_clear_group(vfio_group.fd);
667 /* Get Device information */
668 ret = ioctl(vfio_group.fd, VFIO_GROUP_GET_DEVICE_FD, g_container);
670 FSLMC_VFIO_LOG(ERR, "Error getting device %s fd from group %d",
671 g_container, vfio_group.groupid);
672 close(vfio_group.fd);
673 rte_vfio_clear_group(vfio_group.fd);
676 container_device_fd = ret;
677 FSLMC_VFIO_LOG(DEBUG, "VFIO Container FD is [0x%X]",
678 container_device_fd);