--- /dev/null
+/*-
+ * BSD LICENSE
+ *
+ * Copyright (c) 2015-2016 Freescale Semiconductor, Inc. All rights reserved.
+ * Copyright (c) 2016 NXP. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Freescale Semiconductor, Inc nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <string.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <sys/vfs.h>
+#include <libgen.h>
+#include <dirent.h>
+#include <sys/eventfd.h>
+
+#include <rte_mbuf.h>
+#include <rte_ethdev.h>
+#include <rte_malloc.h>
+#include <rte_memcpy.h>
+#include <rte_string_fns.h>
+#include <rte_cycles.h>
+#include <rte_kvargs.h>
+#include <rte_dev.h>
+#include <rte_ethdev.h>
+#include <rte_bus.h>
+
+#include "rte_fslmc.h"
+#include "fslmc_vfio.h"
+
+#include "portal/dpaa2_hw_pvt.h"
+#include "portal/dpaa2_hw_dpio.h"
+
+#define VFIO_MAX_CONTAINERS 1
+
+#define FSLMC_VFIO_LOG(level, fmt, args...) \
+ RTE_LOG(level, EAL, "%s(): " fmt "\n", __func__, ##args)
+
+/** Pathname of FSL-MC devices directory. */
+#define SYSFS_FSL_MC_DEVICES "/sys/bus/fsl-mc/devices"
+
+/* Number of VFIO containers & groups with in */
+static struct fslmc_vfio_group vfio_groups[VFIO_MAX_GRP];
+static struct fslmc_vfio_container vfio_containers[VFIO_MAX_CONTAINERS];
+static int container_device_fd;
+static uint32_t *msi_intr_vaddr;
+void *(*rte_mcp_ptr_list);
+static uint32_t mcp_id;
+static int is_dma_done;
+
+static int vfio_connect_container(struct fslmc_vfio_group *vfio_group)
+{
+ struct fslmc_vfio_container *container;
+ int i, fd, ret;
+
+ /* Try connecting to vfio container if already created */
+ for (i = 0; i < VFIO_MAX_CONTAINERS; i++) {
+ container = &vfio_containers[i];
+ if (!ioctl(vfio_group->fd, VFIO_GROUP_SET_CONTAINER,
+ &container->fd)) {
+ FSLMC_VFIO_LOG(INFO, "Container pre-exists with"
+ " FD[0x%x] for this group",
+ container->fd);
+ vfio_group->container = container;
+ return 0;
+ }
+ }
+
+ /* Opens main vfio file descriptor which represents the "container" */
+ fd = vfio_get_container_fd();
+ if (fd < 0) {
+ FSLMC_VFIO_LOG(ERR, "Failed to open VFIO container");
+ return -errno;
+ }
+
+ /* Check whether support for SMMU type IOMMU present or not */
+ if (ioctl(fd, VFIO_CHECK_EXTENSION, VFIO_TYPE1_IOMMU)) {
+ /* Connect group to container */
+ ret = ioctl(vfio_group->fd, VFIO_GROUP_SET_CONTAINER, &fd);
+ if (ret) {
+ FSLMC_VFIO_LOG(ERR, "Failed to setup group container");
+ close(fd);
+ return -errno;
+ }
+
+ ret = ioctl(fd, VFIO_SET_IOMMU, VFIO_TYPE1_IOMMU);
+ if (ret) {
+ FSLMC_VFIO_LOG(ERR, "Failed to setup VFIO iommu");
+ close(fd);
+ return -errno;
+ }
+ } else {
+ FSLMC_VFIO_LOG(ERR, "No supported IOMMU available");
+ close(fd);
+ return -EINVAL;
+ }
+
+ container = NULL;
+ for (i = 0; i < VFIO_MAX_CONTAINERS; i++) {
+ if (vfio_containers[i].used)
+ continue;
+ FSLMC_VFIO_LOG(DEBUG, "Unused container at index %d", i);
+ container = &vfio_containers[i];
+ }
+ if (!container) {
+ FSLMC_VFIO_LOG(ERR, "No free container found");
+ close(fd);
+ return -ENOMEM;
+ }
+
+ container->used = 1;
+ container->fd = fd;
+ container->group_list[container->index] = vfio_group;
+ vfio_group->container = container;
+ container->index++;
+ return 0;
+}
+
+static int vfio_map_irq_region(struct fslmc_vfio_group *group)
+{
+ int ret;
+ unsigned long *vaddr = NULL;
+ struct vfio_iommu_type1_dma_map map = {
+ .argsz = sizeof(map),
+ .flags = VFIO_DMA_MAP_FLAG_READ | VFIO_DMA_MAP_FLAG_WRITE,
+ .vaddr = 0x6030000,
+ .iova = 0x6030000,
+ .size = 0x1000,
+ };
+
+ vaddr = (unsigned long *)mmap(NULL, 0x1000, PROT_WRITE |
+ PROT_READ, MAP_SHARED, container_device_fd, 0x6030000);
+ if (vaddr == MAP_FAILED) {
+ FSLMC_VFIO_LOG(ERR, "Unable to map region (errno = %d)", errno);
+ return -errno;
+ }
+
+ msi_intr_vaddr = (uint32_t *)((char *)(vaddr) + 64);
+ map.vaddr = (unsigned long)vaddr;
+ ret = ioctl(group->container->fd, VFIO_IOMMU_MAP_DMA, &map);
+ if (ret == 0)
+ return 0;
+
+ FSLMC_VFIO_LOG(ERR, "VFIO_IOMMU_MAP_DMA fails (errno = %d)", errno);
+ return -errno;
+}
+
+int vfio_dmamap_mem_region(uint64_t vaddr,
+ uint64_t iova,
+ uint64_t size)
+{
+ struct fslmc_vfio_group *group;
+ struct vfio_iommu_type1_dma_map dma_map = {
+ .argsz = sizeof(dma_map),
+ .flags = VFIO_DMA_MAP_FLAG_READ | VFIO_DMA_MAP_FLAG_WRITE,
+ };
+
+ dma_map.vaddr = vaddr;
+ dma_map.size = size;
+ dma_map.iova = iova;
+
+ /* SET DMA MAP for IOMMU */
+ group = &vfio_groups[0];
+ if (ioctl(group->container->fd, VFIO_IOMMU_MAP_DMA, &dma_map)) {
+ FSLMC_VFIO_LOG(ERR, "VFIO_IOMMU_MAP_DMA (errno = %d)", errno);
+ return -1;
+ }
+ return 0;
+}
+
+int rte_fslmc_vfio_dmamap(void)
+{
+ int ret;
+ struct fslmc_vfio_group *group;
+ struct vfio_iommu_type1_dma_map dma_map = {
+ .argsz = sizeof(struct vfio_iommu_type1_dma_map),
+ .flags = VFIO_DMA_MAP_FLAG_READ | VFIO_DMA_MAP_FLAG_WRITE,
+ };
+
+ int i;
+ const struct rte_memseg *memseg;
+
+ if (is_dma_done)
+ return 0;
+ is_dma_done = 1;
+
+ for (i = 0; i < RTE_MAX_MEMSEG; i++) {
+ memseg = rte_eal_get_physmem_layout();
+ if (memseg == NULL) {
+ FSLMC_VFIO_LOG(ERR, "Cannot get physical layout.");
+ return -ENODEV;
+ }
+
+ if (memseg[i].addr == NULL && memseg[i].len == 0)
+ break;
+
+ dma_map.size = memseg[i].len;
+ dma_map.vaddr = memseg[i].addr_64;
+#ifdef RTE_LIBRTE_DPAA2_USE_PHYS_IOVA
+ dma_map.iova = memseg[i].phys_addr;
+#else
+ dma_map.iova = dma_map.vaddr;
+#endif
+
+ /* SET DMA MAP for IOMMU */
+ group = &vfio_groups[0];
+
+ if (!group->container) {
+ FSLMC_VFIO_LOG(ERR, "Container is not connected ");
+ return -1;
+ }
+
+ FSLMC_VFIO_LOG(DEBUG, "-->Initial SHM Virtual ADDR %llX",
+ dma_map.vaddr);
+ FSLMC_VFIO_LOG(DEBUG, "-----> DMA size 0x%llX\n", dma_map.size);
+ ret = ioctl(group->container->fd, VFIO_IOMMU_MAP_DMA,
+ &dma_map);
+ if (ret) {
+ FSLMC_VFIO_LOG(ERR, "VFIO_IOMMU_MAP_DMA API"
+ "(errno = %d)", errno);
+ return ret;
+ }
+ FSLMC_VFIO_LOG(DEBUG, "-----> dma_map.vaddr = 0x%llX",
+ dma_map.vaddr);
+ }
+
+ /* TODO - This is a W.A. as VFIO currently does not add the mapping of
+ * the interrupt region to SMMU. This should be removed once the
+ * support is added in the Kernel.
+ */
+ vfio_map_irq_region(group);
+
+ return 0;
+}
+
+static int64_t vfio_map_mcp_obj(struct fslmc_vfio_group *group, char *mcp_obj)
+{
+ int64_t v_addr = (int64_t)MAP_FAILED;
+ int32_t ret, mc_fd;
+
+ struct vfio_device_info d_info = { .argsz = sizeof(d_info) };
+ struct vfio_region_info reg_info = { .argsz = sizeof(reg_info) };
+
+ /* getting the mcp object's fd*/
+ mc_fd = ioctl(group->fd, VFIO_GROUP_GET_DEVICE_FD, mcp_obj);
+ if (mc_fd < 0) {
+ FSLMC_VFIO_LOG(ERR, "error in VFIO get device %s fd from group"
+ " %d", mcp_obj, group->fd);
+ return v_addr;
+ }
+
+ /* getting device info*/
+ ret = ioctl(mc_fd, VFIO_DEVICE_GET_INFO, &d_info);
+ if (ret < 0) {
+ FSLMC_VFIO_LOG(ERR, "error in VFIO getting DEVICE_INFO");
+ goto MC_FAILURE;
+ }
+
+ /* getting device region info*/
+ ret = ioctl(mc_fd, VFIO_DEVICE_GET_REGION_INFO, ®_info);
+ if (ret < 0) {
+ FSLMC_VFIO_LOG(ERR, "error in VFIO getting REGION_INFO");
+ goto MC_FAILURE;
+ }
+
+ FSLMC_VFIO_LOG(DEBUG, "region offset = %llx , region size = %llx",
+ reg_info.offset, reg_info.size);
+
+ v_addr = (uint64_t)mmap(NULL, reg_info.size,
+ PROT_WRITE | PROT_READ, MAP_SHARED,
+ mc_fd, reg_info.offset);
+
+MC_FAILURE:
+ close(mc_fd);
+
+ return v_addr;
+}
+
+static inline int
+dpaa2_compare_dpaa2_dev(const struct rte_dpaa2_device *dev,
+ const struct rte_dpaa2_device *dev2)
+{
+ /*not the same family device */
+ if (dev->dev_type != DPAA2_MC_DPNI_DEVID ||
+ dev->dev_type != DPAA2_MC_DPSECI_DEVID)
+ return -1;
+
+ if (dev->object_id == dev2->object_id)
+ return 0;
+ else
+ return 1;
+}
+
+static void
+fslmc_bus_add_device(struct rte_dpaa2_device *dev)
+{
+ struct rte_fslmc_device_list *dev_l;
+
+ dev_l = &rte_fslmc_bus.device_list;
+
+ /* device is valid, add in list (sorted) */
+ if (TAILQ_EMPTY(dev_l)) {
+ TAILQ_INSERT_TAIL(dev_l, dev, next);
+ } else {
+ struct rte_dpaa2_device *dev2;
+ int ret;
+
+ TAILQ_FOREACH(dev2, dev_l, next) {
+ ret = dpaa2_compare_dpaa2_dev(dev, dev2);
+ if (ret <= 0)
+ continue;
+
+ TAILQ_INSERT_BEFORE(dev2, dev, next);
+ return;
+ }
+
+ TAILQ_INSERT_TAIL(dev_l, dev, next);
+ }
+}
+
+/* Following function shall fetch total available list of MC devices
+ * from VFIO container & populate private list of devices and other
+ * data structures
+ */
+int fslmc_vfio_process_group(void)
+{
+ struct fslmc_vfio_device *vdev;
+ struct vfio_device_info device_info = { .argsz = sizeof(device_info) };
+ char *temp_obj, *object_type, *mcp_obj, *dev_name;
+ int32_t object_id, i, dev_fd, ret;
+ DIR *d;
+ struct dirent *dir;
+ char path[PATH_MAX];
+ int64_t v_addr;
+ int ndev_count;
+ int dpio_count = 0, dpbp_count = 0;
+ struct fslmc_vfio_group *group = &vfio_groups[0];
+ static int process_once;
+
+ /* if already done once */
+ if (process_once) {
+ FSLMC_VFIO_LOG(DEBUG, "Already scanned once - re-scan "
+ "not supported");
+ return 0;
+ }
+ process_once = 0;
+
+ sprintf(path, "/sys/kernel/iommu_groups/%d/devices", group->groupid);
+
+ d = opendir(path);
+ if (!d) {
+ FSLMC_VFIO_LOG(ERR, "Unable to open directory %s", path);
+ return -1;
+ }
+
+ /*Counting the number of devices in a group and getting the mcp ID*/
+ ndev_count = 0;
+ mcp_obj = NULL;
+ while ((dir = readdir(d)) != NULL) {
+ if (dir->d_type == DT_LNK) {
+ ndev_count++;
+ if (!strncmp("dpmcp", dir->d_name, 5)) {
+ if (mcp_obj)
+ free(mcp_obj);
+ mcp_obj = malloc(sizeof(dir->d_name));
+ if (!mcp_obj) {
+ FSLMC_VFIO_LOG(ERR, "mcp obj:Unable to"
+ " allocate memory");
+ closedir(d);
+ return -ENOMEM;
+ }
+ strcpy(mcp_obj, dir->d_name);
+ temp_obj = strtok(dir->d_name, ".");
+ temp_obj = strtok(NULL, ".");
+ sscanf(temp_obj, "%d", &mcp_id);
+ }
+ }
+ }
+ closedir(d);
+ d = NULL;
+ if (!mcp_obj) {
+ FSLMC_VFIO_LOG(ERR, "DPAA2 MCP Object not Found");
+ return -ENODEV;
+ }
+ RTE_LOG(INFO, EAL, "fslmc: DPRC contains = %d devices\n", ndev_count);
+
+ /* Allocate the memory depends upon number of objects in a group*/
+ group->vfio_device = (struct fslmc_vfio_device *)malloc(ndev_count *
+ sizeof(struct fslmc_vfio_device));
+ if (!(group->vfio_device)) {
+ FSLMC_VFIO_LOG(ERR, "vfio device: Unable to allocate memory\n");
+ free(mcp_obj);
+ return -ENOMEM;
+ }
+
+ /* Allocate memory for MC Portal list */
+ rte_mcp_ptr_list = malloc(sizeof(void *) * 1);
+ if (!rte_mcp_ptr_list) {
+ FSLMC_VFIO_LOG(ERR, "portal list: Unable to allocate memory!");
+ free(mcp_obj);
+ goto FAILURE;
+ }
+
+ v_addr = vfio_map_mcp_obj(group, mcp_obj);
+ free(mcp_obj);
+ if (v_addr == (int64_t)MAP_FAILED) {
+ FSLMC_VFIO_LOG(ERR, "Error mapping region (errno = %d)", errno);
+ goto FAILURE;
+ }
+
+ FSLMC_VFIO_LOG(DEBUG, "DPAA2 MC has VIR_ADD = %ld", v_addr);
+
+ rte_mcp_ptr_list[0] = (void *)v_addr;
+
+ d = opendir(path);
+ if (!d) {
+ FSLMC_VFIO_LOG(ERR, "Unable to open %s Directory", path);
+ goto FAILURE;
+ }
+
+ i = 0;
+ FSLMC_VFIO_LOG(DEBUG, "DPAA2 - Parsing devices:");
+ /* Parsing each object and initiating them*/
+ while ((dir = readdir(d)) != NULL) {
+ if (dir->d_type != DT_LNK)
+ continue;
+ if (!strncmp("dprc", dir->d_name, 4) ||
+ !strncmp("dpmcp", dir->d_name, 5))
+ continue;
+ dev_name = malloc(sizeof(dir->d_name));
+ if (!dev_name) {
+ FSLMC_VFIO_LOG(ERR, "name: Unable to allocate memory");
+ goto FAILURE;
+ }
+ strcpy(dev_name, dir->d_name);
+ object_type = strtok(dir->d_name, ".");
+ temp_obj = strtok(NULL, ".");
+ sscanf(temp_obj, "%d", &object_id);
+ FSLMC_VFIO_LOG(DEBUG, " - %s ", dev_name);
+
+ /* getting the device fd*/
+ dev_fd = ioctl(group->fd, VFIO_GROUP_GET_DEVICE_FD, dev_name);
+ if (dev_fd < 0) {
+ FSLMC_VFIO_LOG(ERR, "VFIO_GROUP_GET_DEVICE_FD error"
+ " Device fd: %s, Group: %d",
+ dev_name, group->fd);
+ free(dev_name);
+ goto FAILURE;
+ }
+
+ free(dev_name);
+ vdev = &group->vfio_device[group->object_index++];
+ vdev->fd = dev_fd;
+ vdev->index = i;
+ i++;
+ /* Get Device inofrmation */
+ if (ioctl(vdev->fd, VFIO_DEVICE_GET_INFO, &device_info)) {
+ FSLMC_VFIO_LOG(ERR, "DPAA2 VFIO_DEVICE_GET_INFO fail");
+ goto FAILURE;
+ }
+ if (!strcmp(object_type, "dpni") ||
+ !strcmp(object_type, "dpseci")) {
+ struct rte_dpaa2_device *dev;
+
+ dev = malloc(sizeof(struct rte_dpaa2_device));
+ if (dev == NULL)
+ return -1;
+
+ memset(dev, 0, sizeof(*dev));
+ /* store hw_id of dpni/dpseci device */
+ dev->object_id = object_id;
+ dev->dev_type = (strcmp(object_type, "dpseci")) ?
+ DPAA2_MC_DPNI_DEVID : DPAA2_MC_DPSECI_DEVID;
+
+ FSLMC_VFIO_LOG(DEBUG, "DPAA2: Added [%s-%d]\n",
+ object_type, object_id);
+
+ fslmc_bus_add_device(dev);
+ }
+ if (!strcmp(object_type, "dpio")) {
+ ret = dpaa2_create_dpio_device(vdev,
+ &device_info,
+ object_id);
+ if (!ret)
+ dpio_count++;
+ }
+ if (!strcmp(object_type, "dpbp")) {
+ ret = dpaa2_create_dpbp_device(object_id);
+ if (!ret)
+ dpbp_count++;
+ }
+ }
+ closedir(d);
+
+ ret = dpaa2_affine_qbman_swp();
+ if (ret)
+ FSLMC_VFIO_LOG(DEBUG, "Error in affining qbman swp %d", ret);
+
+ FSLMC_VFIO_LOG(DEBUG, "DPAA2: Added dpbp_count = %d dpio_count=%d\n",
+ dpbp_count, dpio_count);
+ return 0;
+
+FAILURE:
+ if (d)
+ closedir(d);
+ if (rte_mcp_ptr_list) {
+ free(rte_mcp_ptr_list);
+ rte_mcp_ptr_list = NULL;
+ }
+
+ free(group->vfio_device);
+ group->vfio_device = NULL;
+ return -1;
+}
+
+int fslmc_vfio_setup_group(void)
+{
+ struct fslmc_vfio_group *group = NULL;
+ int groupid;
+ int ret, i;
+ char *container;
+ struct vfio_group_status status = { .argsz = sizeof(status) };
+
+ /* if already done once */
+ if (container_device_fd)
+ return 0;
+
+ container = getenv("DPRC");
+
+ if (container == NULL) {
+ FSLMC_VFIO_LOG(ERR, "VFIO container not set in env DPRC");
+ return -EOPNOTSUPP;
+ }
+
+ /* get group number */
+ ret = vfio_get_group_no(SYSFS_FSL_MC_DEVICES, container, &groupid);
+ if (ret == 0) {
+ RTE_LOG(WARNING, EAL, "%s not managed by VFIO, skipping\n",
+ container);
+ return -EOPNOTSUPP;
+ }
+
+ /* if negative, something failed */
+ if (ret < 0)
+ return ret;
+
+ FSLMC_VFIO_LOG(DEBUG, "VFIO iommu group id = %d", groupid);
+
+ /* Check if group already exists */
+ for (i = 0; i < VFIO_MAX_GRP; i++) {
+ group = &vfio_groups[i];
+ if (group->groupid == groupid) {
+ FSLMC_VFIO_LOG(ERR, "groupid already exists %d",
+ groupid);
+ return 0;
+ }
+ }
+
+ /* get the actual group fd */
+ ret = vfio_get_group_fd(groupid);
+ if (ret < 0)
+ return ret;
+ group->fd = ret;
+
+ /*
+ * at this point, we know that this group is viable (meaning,
+ * all devices are either bound to VFIO or not bound to anything)
+ */
+
+ ret = ioctl(group->fd, VFIO_GROUP_GET_STATUS, &status);
+ if (ret) {
+ FSLMC_VFIO_LOG(ERR, " VFIO error getting group status");
+ close(group->fd);
+ return ret;
+ }
+
+ if (!(status.flags & VFIO_GROUP_FLAGS_VIABLE)) {
+ FSLMC_VFIO_LOG(ERR, "VFIO group not viable");
+ close(group->fd);
+ return -EPERM;
+ }
+ /* Since Group is VIABLE, Store the groupid */
+ group->groupid = groupid;
+
+ /* check if group does not have a container yet */
+ if (!(status.flags & VFIO_GROUP_FLAGS_CONTAINER_SET)) {
+ /* Now connect this IOMMU group to given container */
+ ret = vfio_connect_container(group);
+ if (ret) {
+ FSLMC_VFIO_LOG(ERR, "VFIO error connecting container"
+ " with groupid %d", groupid);
+ close(group->fd);
+ return ret;
+ }
+ }
+
+ /* Get Device information */
+ ret = ioctl(group->fd, VFIO_GROUP_GET_DEVICE_FD, container);
+ if (ret < 0) {
+ FSLMC_VFIO_LOG(ERR, "VFIO error getting device %s fd from"
+ " group %d", container, group->groupid);
+ return ret;
+ }
+ container_device_fd = ret;
+ FSLMC_VFIO_LOG(DEBUG, "VFIO Container FD is [0x%X]",
+ container_device_fd);
+
+ return 0;
+}
Code Review / deb_dpdk.git / blobdiff