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_list *msl __rte_unused,
194 const struct rte_memseg *ms, void *arg)
197 struct fslmc_vfio_group *group;
198 struct vfio_iommu_type1_dma_map dma_map = {
199 .argsz = sizeof(struct vfio_iommu_type1_dma_map),
200 .flags = VFIO_DMA_MAP_FLAG_READ | VFIO_DMA_MAP_FLAG_WRITE,
204 dma_map.size = ms->len;
205 dma_map.vaddr = ms->addr_64;
206 #ifdef RTE_LIBRTE_DPAA2_USE_PHYS_IOVA
207 dma_map.iova = ms->iova;
209 dma_map.iova = dma_map.vaddr;
212 /* SET DMA MAP for IOMMU */
215 if (!group->container) {
216 DPAA2_BUS_ERR("Container is not connected ");
220 DPAA2_BUS_DEBUG("-->Initial SHM Virtual ADDR %llX",
222 DPAA2_BUS_DEBUG("-----> DMA size 0x%llX", dma_map.size);
223 ret = ioctl(group->container->fd, VFIO_IOMMU_MAP_DMA,
226 DPAA2_BUS_ERR("VFIO_IOMMU_MAP_DMA API(errno = %d)",
234 int rte_fslmc_vfio_dmamap(void)
241 if (rte_memseg_walk(fslmc_vfio_map, &i) < 0)
244 /* Verifying that at least single segment is available */
246 DPAA2_BUS_ERR("No Segments found for VFIO Mapping");
249 DPAA2_BUS_DEBUG("Total %d segments found.", i);
251 /* TODO - This is a W.A. as VFIO currently does not add the mapping of
252 * the interrupt region to SMMU. This should be removed once the
253 * support is added in the Kernel.
255 vfio_map_irq_region(&vfio_group);
262 static int64_t vfio_map_mcp_obj(struct fslmc_vfio_group *group, char *mcp_obj)
264 intptr_t v_addr = (intptr_t)MAP_FAILED;
267 struct vfio_device_info d_info = { .argsz = sizeof(d_info) };
268 struct vfio_region_info reg_info = { .argsz = sizeof(reg_info) };
270 /* getting the mcp object's fd*/
271 mc_fd = ioctl(group->fd, VFIO_GROUP_GET_DEVICE_FD, mcp_obj);
273 DPAA2_BUS_ERR("Error in VFIO get dev %s fd from group %d",
278 /* getting device info*/
279 ret = ioctl(mc_fd, VFIO_DEVICE_GET_INFO, &d_info);
281 DPAA2_BUS_ERR("Error in VFIO getting DEVICE_INFO");
285 /* getting device region info*/
286 ret = ioctl(mc_fd, VFIO_DEVICE_GET_REGION_INFO, ®_info);
288 DPAA2_BUS_ERR("Error in VFIO getting REGION_INFO");
292 DPAA2_BUS_DEBUG("Region offset = %llx , region size = %llx",
293 reg_info.offset, reg_info.size);
295 v_addr = (size_t)mmap(NULL, reg_info.size,
296 PROT_WRITE | PROT_READ, MAP_SHARED,
297 mc_fd, reg_info.offset);
305 #define IRQ_SET_BUF_LEN (sizeof(struct vfio_irq_set) + sizeof(int))
307 int rte_dpaa2_intr_enable(struct rte_intr_handle *intr_handle, int index)
310 char irq_set_buf[IRQ_SET_BUF_LEN];
311 struct vfio_irq_set *irq_set;
314 len = sizeof(irq_set_buf);
316 irq_set = (struct vfio_irq_set *)irq_set_buf;
317 irq_set->argsz = len;
320 VFIO_IRQ_SET_DATA_EVENTFD | VFIO_IRQ_SET_ACTION_TRIGGER;
321 irq_set->index = index;
323 fd_ptr = (int *)&irq_set->data;
324 *fd_ptr = intr_handle->fd;
326 ret = ioctl(intr_handle->vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
328 DPAA2_BUS_ERR("Error:dpaa2 SET IRQs fd=%d, err = %d(%s)",
329 intr_handle->fd, errno, strerror(errno));
336 int rte_dpaa2_intr_disable(struct rte_intr_handle *intr_handle, int index)
338 struct vfio_irq_set *irq_set;
339 char irq_set_buf[IRQ_SET_BUF_LEN];
342 len = sizeof(struct vfio_irq_set);
344 irq_set = (struct vfio_irq_set *)irq_set_buf;
345 irq_set->argsz = len;
346 irq_set->flags = VFIO_IRQ_SET_DATA_NONE | VFIO_IRQ_SET_ACTION_TRIGGER;
347 irq_set->index = index;
351 ret = ioctl(intr_handle->vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
354 "Error disabling dpaa2 interrupts for fd %d",
360 /* set up interrupt support (but not enable interrupts) */
362 rte_dpaa2_vfio_setup_intr(struct rte_intr_handle *intr_handle,
368 /* start from MSI-X interrupt type */
369 for (i = 0; i < num_irqs; i++) {
370 struct vfio_irq_info irq_info = { .argsz = sizeof(irq_info) };
375 ret = ioctl(vfio_dev_fd, VFIO_DEVICE_GET_IRQ_INFO, &irq_info);
377 DPAA2_BUS_ERR("Cannot get IRQ(%d) info, error %i (%s)",
378 i, errno, strerror(errno));
382 /* if this vector cannot be used with eventfd,
383 * fail if we explicitly
384 * specified interrupt type, otherwise continue
386 if ((irq_info.flags & VFIO_IRQ_INFO_EVENTFD) == 0)
389 /* set up an eventfd for interrupts */
390 fd = eventfd(0, EFD_NONBLOCK | EFD_CLOEXEC);
392 DPAA2_BUS_ERR("Cannot set up eventfd, error %i (%s)",
393 errno, strerror(errno));
397 intr_handle->fd = fd;
398 intr_handle->type = RTE_INTR_HANDLE_VFIO_MSI;
399 intr_handle->vfio_dev_fd = vfio_dev_fd;
404 /* if we're here, we haven't found a suitable interrupt vector */
409 * fslmc_process_iodevices for processing only IO (ETH, CRYPTO, and possibly
413 fslmc_process_iodevices(struct rte_dpaa2_device *dev)
416 struct vfio_device_info device_info = { .argsz = sizeof(device_info) };
417 struct rte_dpaa2_object *object = NULL;
419 dev_fd = ioctl(vfio_group.fd, VFIO_GROUP_GET_DEVICE_FD,
422 DPAA2_BUS_ERR("Unable to obtain device FD for device:%s",
427 if (ioctl(dev_fd, VFIO_DEVICE_GET_INFO, &device_info)) {
428 DPAA2_BUS_ERR("Unable to obtain information for device:%s",
433 switch (dev->dev_type) {
435 rte_dpaa2_vfio_setup_intr(&dev->intr_handle, dev_fd,
436 device_info.num_irqs);
442 TAILQ_FOREACH(object, &dpaa2_obj_list, next) {
443 if (dev->dev_type == object->dev_type)
444 object->create(dev_fd, &device_info,
454 DPAA2_BUS_DEBUG("Device (%s) abstracted from VFIO",
460 fslmc_process_mcp(struct rte_dpaa2_device *dev)
464 struct fsl_mc_io dpmng = {0};
465 struct mc_version mc_ver_info = {0};
467 rte_mcp_ptr_list = malloc(sizeof(void *) * 1);
468 if (!rte_mcp_ptr_list) {
469 DPAA2_BUS_ERR("Unable to allocate MC portal memory");
473 dev_name = strdup(dev->device.name);
475 DPAA2_BUS_ERR("Unable to allocate MC device name memory");
476 free(rte_mcp_ptr_list);
477 rte_mcp_ptr_list = NULL;
481 v_addr = vfio_map_mcp_obj(&vfio_group, dev_name);
482 if (v_addr == (intptr_t)MAP_FAILED) {
483 DPAA2_BUS_ERR("Error mapping region (errno = %d)", errno);
484 free(rte_mcp_ptr_list);
485 rte_mcp_ptr_list = NULL;
489 /* check the MC version compatibility */
490 dpmng.regs = (void *)v_addr;
491 if (mc_get_version(&dpmng, CMD_PRI_LOW, &mc_ver_info)) {
492 DPAA2_BUS_ERR("Unable to obtain MC version");
496 if ((mc_ver_info.major != MC_VER_MAJOR) ||
497 (mc_ver_info.minor < MC_VER_MINOR)) {
498 DPAA2_BUS_ERR("DPAA2 MC version not compatible!"
499 " Expected %d.%d.x, Detected %d.%d.%d",
500 MC_VER_MAJOR, MC_VER_MINOR,
501 mc_ver_info.major, mc_ver_info.minor,
502 mc_ver_info.revision);
503 free(rte_mcp_ptr_list);
504 rte_mcp_ptr_list = NULL;
507 rte_mcp_ptr_list[0] = (void *)v_addr;
513 fslmc_vfio_process_group(void)
516 int found_mportal = 0;
517 struct rte_dpaa2_device *dev, *dev_temp;
519 /* Search the MCP as that should be initialized first. */
520 TAILQ_FOREACH_SAFE(dev, &rte_fslmc_bus.device_list, next, dev_temp) {
521 if (dev->dev_type == DPAA2_MPORTAL) {
522 ret = fslmc_process_mcp(dev);
524 DPAA2_BUS_ERR("Unable to map MC Portal");
530 TAILQ_REMOVE(&rte_fslmc_bus.device_list, dev, next);
533 /* Ideally there is only a single dpmcp, but in case
534 * multiple exists, looping on remaining devices.
539 /* Cannot continue if there is not even a single mportal */
540 if (!found_mportal) {
541 DPAA2_BUS_ERR("No MC Portal device found. Not continuing");
545 TAILQ_FOREACH_SAFE(dev, &rte_fslmc_bus.device_list, next, dev_temp) {
549 switch (dev->dev_type) {
552 ret = fslmc_process_iodevices(dev);
554 DPAA2_BUS_DEBUG("Dev (%s) init failed",
563 /* Call the object creation routine and remove the
564 * device entry from device list
566 ret = fslmc_process_iodevices(dev);
568 DPAA2_BUS_DEBUG("Dev (%s) init failed",
573 /* This device is not required to be in the DPDK
574 * exposed device list.
576 TAILQ_REMOVE(&rte_fslmc_bus.device_list, dev, next);
582 /* Unknown - ignore */
583 DPAA2_BUS_DEBUG("Found unknown device (%s)",
585 TAILQ_REMOVE(&rte_fslmc_bus.device_list, dev, next);
595 fslmc_vfio_setup_group(void)
599 struct vfio_group_status status = { .argsz = sizeof(status) };
601 /* if already done once */
602 if (container_device_fd)
605 ret = fslmc_get_container_group(&groupid);
609 /* In case this group was already opened, continue without any
612 if (vfio_group.groupid == groupid) {
613 DPAA2_BUS_ERR("groupid already exists %d", groupid);
617 /* Get the actual group fd */
618 ret = vfio_get_group_fd(groupid);
623 /* Check group viability */
624 ret = ioctl(vfio_group.fd, VFIO_GROUP_GET_STATUS, &status);
626 DPAA2_BUS_ERR("VFIO error getting group status");
627 close(vfio_group.fd);
628 rte_vfio_clear_group(vfio_group.fd);
632 if (!(status.flags & VFIO_GROUP_FLAGS_VIABLE)) {
633 DPAA2_BUS_ERR("VFIO group not viable");
634 close(vfio_group.fd);
635 rte_vfio_clear_group(vfio_group.fd);
638 /* Since Group is VIABLE, Store the groupid */
639 vfio_group.groupid = groupid;
641 /* check if group does not have a container yet */
642 if (!(status.flags & VFIO_GROUP_FLAGS_CONTAINER_SET)) {
643 /* Now connect this IOMMU group to given container */
644 ret = vfio_connect_container();
647 "Error connecting container with groupid %d",
649 close(vfio_group.fd);
650 rte_vfio_clear_group(vfio_group.fd);
655 /* Get Device information */
656 ret = ioctl(vfio_group.fd, VFIO_GROUP_GET_DEVICE_FD, g_container);
658 DPAA2_BUS_ERR("Error getting device %s fd from group %d",
659 g_container, vfio_group.groupid);
660 close(vfio_group.fd);
661 rte_vfio_clear_group(vfio_group.fd);
664 container_device_fd = ret;
665 DPAA2_BUS_DEBUG("VFIO Container FD is [0x%X]",
666 container_device_fd);