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);
192 int rte_fslmc_vfio_dmamap(void)
195 struct fslmc_vfio_group *group;
196 struct vfio_iommu_type1_dma_map dma_map = {
197 .argsz = sizeof(struct vfio_iommu_type1_dma_map),
198 .flags = VFIO_DMA_MAP_FLAG_READ | VFIO_DMA_MAP_FLAG_WRITE,
202 const struct rte_memseg *memseg;
207 memseg = rte_eal_get_physmem_layout();
208 if (memseg == NULL) {
209 DPAA2_BUS_ERR("Cannot get physical layout");
213 for (i = 0; i < RTE_MAX_MEMSEG; i++) {
214 if (memseg[i].addr == NULL && memseg[i].len == 0) {
215 DPAA2_BUS_DEBUG("Total %d segments found", i);
219 dma_map.size = memseg[i].len;
220 dma_map.vaddr = memseg[i].addr_64;
221 #ifdef RTE_LIBRTE_DPAA2_USE_PHYS_IOVA
222 dma_map.iova = memseg[i].iova;
224 dma_map.iova = dma_map.vaddr;
227 /* SET DMA MAP for IOMMU */
230 if (!group->container) {
231 DPAA2_BUS_ERR("Container is not connected");
235 DPAA2_BUS_DEBUG("-->Initial SHM Virtual ADDR %llX",
237 DPAA2_BUS_DEBUG("-----> DMA size 0x%llX", dma_map.size);
238 ret = ioctl(group->container->fd, VFIO_IOMMU_MAP_DMA,
241 DPAA2_BUS_ERR("Unable to map DMA address (errno = %d)",
247 /* Verifying that at least single segment is available */
249 DPAA2_BUS_ERR("No Segments found for VFIO Mapping");
253 /* TODO - This is a W.A. as VFIO currently does not add the mapping of
254 * the interrupt region to SMMU. This should be removed once the
255 * support is added in the Kernel.
257 vfio_map_irq_region(group);
264 static int64_t vfio_map_mcp_obj(struct fslmc_vfio_group *group, char *mcp_obj)
266 intptr_t v_addr = (intptr_t)MAP_FAILED;
269 struct vfio_device_info d_info = { .argsz = sizeof(d_info) };
270 struct vfio_region_info reg_info = { .argsz = sizeof(reg_info) };
272 /* getting the mcp object's fd*/
273 mc_fd = ioctl(group->fd, VFIO_GROUP_GET_DEVICE_FD, mcp_obj);
275 DPAA2_BUS_ERR("Error in VFIO get dev %s fd from group %d",
280 /* getting device info*/
281 ret = ioctl(mc_fd, VFIO_DEVICE_GET_INFO, &d_info);
283 DPAA2_BUS_ERR("Error in VFIO getting DEVICE_INFO");
287 /* getting device region info*/
288 ret = ioctl(mc_fd, VFIO_DEVICE_GET_REGION_INFO, ®_info);
290 DPAA2_BUS_ERR("Error in VFIO getting REGION_INFO");
294 DPAA2_BUS_DEBUG("Region offset = %llx , region size = %llx",
295 reg_info.offset, reg_info.size);
297 v_addr = (size_t)mmap(NULL, reg_info.size,
298 PROT_WRITE | PROT_READ, MAP_SHARED,
299 mc_fd, reg_info.offset);
307 #define IRQ_SET_BUF_LEN (sizeof(struct vfio_irq_set) + sizeof(int))
309 int rte_dpaa2_intr_enable(struct rte_intr_handle *intr_handle, int index)
312 char irq_set_buf[IRQ_SET_BUF_LEN];
313 struct vfio_irq_set *irq_set;
316 len = sizeof(irq_set_buf);
318 irq_set = (struct vfio_irq_set *)irq_set_buf;
319 irq_set->argsz = len;
322 VFIO_IRQ_SET_DATA_EVENTFD | VFIO_IRQ_SET_ACTION_TRIGGER;
323 irq_set->index = index;
325 fd_ptr = (int *)&irq_set->data;
326 *fd_ptr = intr_handle->fd;
328 ret = ioctl(intr_handle->vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
330 DPAA2_BUS_ERR("Error:dpaa2 SET IRQs fd=%d, err = %d(%s)",
331 intr_handle->fd, errno, strerror(errno));
338 int rte_dpaa2_intr_disable(struct rte_intr_handle *intr_handle, int index)
340 struct vfio_irq_set *irq_set;
341 char irq_set_buf[IRQ_SET_BUF_LEN];
344 len = sizeof(struct vfio_irq_set);
346 irq_set = (struct vfio_irq_set *)irq_set_buf;
347 irq_set->argsz = len;
348 irq_set->flags = VFIO_IRQ_SET_DATA_NONE | VFIO_IRQ_SET_ACTION_TRIGGER;
349 irq_set->index = index;
353 ret = ioctl(intr_handle->vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
356 "Error disabling dpaa2 interrupts for fd %d",
362 /* set up interrupt support (but not enable interrupts) */
364 rte_dpaa2_vfio_setup_intr(struct rte_intr_handle *intr_handle,
370 /* start from MSI-X interrupt type */
371 for (i = 0; i < num_irqs; i++) {
372 struct vfio_irq_info irq_info = { .argsz = sizeof(irq_info) };
377 ret = ioctl(vfio_dev_fd, VFIO_DEVICE_GET_IRQ_INFO, &irq_info);
379 DPAA2_BUS_ERR("Cannot get IRQ(%d) info, error %i (%s)",
380 i, errno, strerror(errno));
384 /* if this vector cannot be used with eventfd,
385 * fail if we explicitly
386 * specified interrupt type, otherwise continue
388 if ((irq_info.flags & VFIO_IRQ_INFO_EVENTFD) == 0)
391 /* set up an eventfd for interrupts */
392 fd = eventfd(0, EFD_NONBLOCK | EFD_CLOEXEC);
394 DPAA2_BUS_ERR("Cannot set up eventfd, error %i (%s)",
395 errno, strerror(errno));
399 intr_handle->fd = fd;
400 intr_handle->type = RTE_INTR_HANDLE_VFIO_MSI;
401 intr_handle->vfio_dev_fd = vfio_dev_fd;
406 /* if we're here, we haven't found a suitable interrupt vector */
411 * fslmc_process_iodevices for processing only IO (ETH, CRYPTO, and possibly
415 fslmc_process_iodevices(struct rte_dpaa2_device *dev)
418 struct vfio_device_info device_info = { .argsz = sizeof(device_info) };
419 struct rte_dpaa2_object *object = NULL;
421 dev_fd = ioctl(vfio_group.fd, VFIO_GROUP_GET_DEVICE_FD,
424 DPAA2_BUS_ERR("Unable to obtain device FD for device:%s",
429 if (ioctl(dev_fd, VFIO_DEVICE_GET_INFO, &device_info)) {
430 DPAA2_BUS_ERR("Unable to obtain information for device:%s",
435 switch (dev->dev_type) {
437 rte_dpaa2_vfio_setup_intr(&dev->intr_handle, dev_fd,
438 device_info.num_irqs);
444 TAILQ_FOREACH(object, &dpaa2_obj_list, next) {
445 if (dev->dev_type == object->dev_type)
446 object->create(dev_fd, &device_info,
456 DPAA2_BUS_DEBUG("Device (%s) abstracted from VFIO",
462 fslmc_process_mcp(struct rte_dpaa2_device *dev)
466 struct fsl_mc_io dpmng = {0};
467 struct mc_version mc_ver_info = {0};
469 rte_mcp_ptr_list = malloc(sizeof(void *) * 1);
470 if (!rte_mcp_ptr_list) {
471 DPAA2_BUS_ERR("Unable to allocate MC portal memory");
475 dev_name = strdup(dev->device.name);
477 DPAA2_BUS_ERR("Unable to allocate MC device name memory");
478 free(rte_mcp_ptr_list);
479 rte_mcp_ptr_list = NULL;
483 v_addr = vfio_map_mcp_obj(&vfio_group, dev_name);
484 if (v_addr == (intptr_t)MAP_FAILED) {
485 DPAA2_BUS_ERR("Error mapping region (errno = %d)", errno);
486 free(rte_mcp_ptr_list);
487 rte_mcp_ptr_list = NULL;
491 /* check the MC version compatibility */
492 dpmng.regs = (void *)v_addr;
493 if (mc_get_version(&dpmng, CMD_PRI_LOW, &mc_ver_info)) {
494 DPAA2_BUS_ERR("Unable to obtain MC version");
498 if ((mc_ver_info.major != MC_VER_MAJOR) ||
499 (mc_ver_info.minor < MC_VER_MINOR)) {
500 DPAA2_BUS_ERR("DPAA2 MC version not compatible!"
501 " Expected %d.%d.x, Detected %d.%d.%d",
502 MC_VER_MAJOR, MC_VER_MINOR,
503 mc_ver_info.major, mc_ver_info.minor,
504 mc_ver_info.revision);
505 free(rte_mcp_ptr_list);
506 rte_mcp_ptr_list = NULL;
509 rte_mcp_ptr_list[0] = (void *)v_addr;
515 fslmc_vfio_process_group(void)
518 int found_mportal = 0;
519 struct rte_dpaa2_device *dev, *dev_temp;
521 /* Search the MCP as that should be initialized first. */
522 TAILQ_FOREACH_SAFE(dev, &rte_fslmc_bus.device_list, next, dev_temp) {
523 if (dev->dev_type == DPAA2_MPORTAL) {
524 ret = fslmc_process_mcp(dev);
526 DPAA2_BUS_ERR("Unable to map MC Portal");
532 TAILQ_REMOVE(&rte_fslmc_bus.device_list, dev, next);
535 /* Ideally there is only a single dpmcp, but in case
536 * multiple exists, looping on remaining devices.
541 /* Cannot continue if there is not even a single mportal */
542 if (!found_mportal) {
543 DPAA2_BUS_ERR("No MC Portal device found. Not continuing");
547 TAILQ_FOREACH_SAFE(dev, &rte_fslmc_bus.device_list, next, dev_temp) {
551 switch (dev->dev_type) {
554 ret = fslmc_process_iodevices(dev);
556 DPAA2_BUS_DEBUG("Dev (%s) init failed",
565 /* Call the object creation routine and remove the
566 * device entry from device list
568 ret = fslmc_process_iodevices(dev);
570 DPAA2_BUS_DEBUG("Dev (%s) init failed",
575 /* This device is not required to be in the DPDK
576 * exposed device list.
578 TAILQ_REMOVE(&rte_fslmc_bus.device_list, dev, next);
584 /* Unknown - ignore */
585 DPAA2_BUS_DEBUG("Found unknown device (%s)",
587 TAILQ_REMOVE(&rte_fslmc_bus.device_list, dev, next);
597 fslmc_vfio_setup_group(void)
601 struct vfio_group_status status = { .argsz = sizeof(status) };
603 /* if already done once */
604 if (container_device_fd)
607 ret = fslmc_get_container_group(&groupid);
611 /* In case this group was already opened, continue without any
614 if (vfio_group.groupid == groupid) {
615 DPAA2_BUS_ERR("groupid already exists %d", groupid);
619 /* Get the actual group fd */
620 ret = vfio_get_group_fd(groupid);
625 /* Check group viability */
626 ret = ioctl(vfio_group.fd, VFIO_GROUP_GET_STATUS, &status);
628 DPAA2_BUS_ERR("VFIO error getting group status");
629 close(vfio_group.fd);
630 rte_vfio_clear_group(vfio_group.fd);
634 if (!(status.flags & VFIO_GROUP_FLAGS_VIABLE)) {
635 DPAA2_BUS_ERR("VFIO group not viable");
636 close(vfio_group.fd);
637 rte_vfio_clear_group(vfio_group.fd);
640 /* Since Group is VIABLE, Store the groupid */
641 vfio_group.groupid = groupid;
643 /* check if group does not have a container yet */
644 if (!(status.flags & VFIO_GROUP_FLAGS_CONTAINER_SET)) {
645 /* Now connect this IOMMU group to given container */
646 ret = vfio_connect_container();
649 "Error connecting container with groupid %d",
651 close(vfio_group.fd);
652 rte_vfio_clear_group(vfio_group.fd);
657 /* Get Device information */
658 ret = ioctl(vfio_group.fd, VFIO_GROUP_GET_DEVICE_FD, g_container);
660 DPAA2_BUS_ERR("Error getting device %s fd from group %d",
661 g_container, vfio_group.groupid);
662 close(vfio_group.fd);
663 rte_vfio_clear_group(vfio_group.fd);
666 container_device_fd = ret;
667 DPAA2_BUS_DEBUG("VFIO Container FD is [0x%X]",
668 container_device_fd);