X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;ds=sidebyside;f=drivers%2Fbus%2Ffslmc%2Ffslmc_vfio.c;h=970969d2bfb0b7c5f1d0c68a0794342a1fdeb006;hb=6d6cd38f4586beeb40e25fb86c6bb441ede77797;hp=44e4fa6e2b4d853a584bf5fb66e3f30c71f9322d;hpb=76f80881ef1e14cce2c11020ca913ea5d7186cba;p=dpdk.git diff --git a/drivers/bus/fslmc/fslmc_vfio.c b/drivers/bus/fslmc/fslmc_vfio.c index 44e4fa6e2b..970969d2bf 100644 --- a/drivers/bus/fslmc/fslmc_vfio.c +++ b/drivers/bus/fslmc/fslmc_vfio.c @@ -1,7 +1,7 @@ /* SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 2015-2016 Freescale Semiconductor, Inc. All rights reserved. - * Copyright 2016-2018 NXP + * Copyright 2016-2019 NXP * */ @@ -40,16 +40,14 @@ #include "portal/dpaa2_hw_pvt.h" #include "portal/dpaa2_hw_dpio.h" -/** Pathname of FSL-MC devices directory. */ -#define SYSFS_FSL_MC_DEVICES "/sys/bus/fsl-mc/devices" - #define FSLMC_CONTAINER_MAX_LEN 8 /**< Of the format dprc.XX */ /* Number of VFIO containers & groups with in */ static struct fslmc_vfio_group vfio_group; static struct fslmc_vfio_container vfio_container; static int container_device_fd; -static char *g_container; +char *fslmc_container; +static int fslmc_iommu_type; static uint32_t *msi_intr_vaddr; void *(*rte_mcp_ptr_list); @@ -71,7 +69,7 @@ fslmc_get_container_group(int *groupid) int ret; char *container; - if (!g_container) { + if (!fslmc_container) { container = getenv("DPRC"); if (container == NULL) { DPAA2_BUS_DEBUG("DPAA2: DPRC not available"); @@ -83,23 +81,26 @@ fslmc_get_container_group(int *groupid) return -1; } - g_container = strdup(container); - if (!g_container) { + fslmc_container = strdup(container); + if (!fslmc_container) { DPAA2_BUS_ERR("Mem alloc failure; Container name"); return -ENOMEM; } } + fslmc_iommu_type = (rte_vfio_noiommu_is_enabled() == 1) ? + RTE_VFIO_NOIOMMU : VFIO_TYPE1_IOMMU; + /* get group number */ ret = rte_vfio_get_group_num(SYSFS_FSL_MC_DEVICES, - g_container, groupid); + fslmc_container, groupid); if (ret <= 0) { - DPAA2_BUS_ERR("Unable to find %s IOMMU group", g_container); + DPAA2_BUS_ERR("Unable to find %s IOMMU group", fslmc_container); return -1; } DPAA2_BUS_DEBUG("Container: %s has VFIO iommu group id = %d", - g_container, *groupid); + fslmc_container, *groupid); return 0; } @@ -132,7 +133,7 @@ vfio_connect_container(void) } /* Check whether support for SMMU type IOMMU present or not */ - if (ioctl(fd, VFIO_CHECK_EXTENSION, VFIO_TYPE1_IOMMU)) { + if (ioctl(fd, VFIO_CHECK_EXTENSION, fslmc_iommu_type)) { /* Connect group to container */ ret = ioctl(vfio_group.fd, VFIO_GROUP_SET_CONTAINER, &fd); if (ret) { @@ -141,7 +142,7 @@ vfio_connect_container(void) return -errno; } - ret = ioctl(fd, VFIO_SET_IOMMU, VFIO_TYPE1_IOMMU); + ret = ioctl(fd, VFIO_SET_IOMMU, fslmc_iommu_type); if (ret) { DPAA2_BUS_ERR("Failed to setup VFIO iommu"); close(fd); @@ -261,6 +262,11 @@ fslmc_map_dma(uint64_t vaddr, rte_iova_t iovaddr __rte_unused, size_t len) }; int ret; + if (fslmc_iommu_type == RTE_VFIO_NOIOMMU) { + DPAA2_BUS_DEBUG("Running in NOIOMMU mode"); + return 0; + } + dma_map.size = len; dma_map.vaddr = vaddr; @@ -300,6 +306,11 @@ fslmc_unmap_dma(uint64_t vaddr, uint64_t iovaddr __rte_unused, size_t len) }; int ret; + if (fslmc_iommu_type == RTE_VFIO_NOIOMMU) { + DPAA2_BUS_DEBUG("Running in NOIOMMU mode"); + return 0; + } + dma_unmap.size = len; dma_unmap.iova = vaddr; @@ -344,6 +355,46 @@ fslmc_dmamap_seg(const struct rte_memseg_list *msl __rte_unused, return ret; } +int +rte_fslmc_vfio_mem_dmamap(uint64_t vaddr, uint64_t iova, uint64_t size) +{ + 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, + }; + + if (fslmc_iommu_type == RTE_VFIO_NOIOMMU) { + DPAA2_BUS_DEBUG("Running in NOIOMMU mode"); + return 0; + } + + /* SET DMA MAP for IOMMU */ + group = &vfio_group; + if (!group->container) { + DPAA2_BUS_ERR("Container is not connected"); + return -1; + } + + dma_map.size = size; + dma_map.vaddr = vaddr; + dma_map.iova = iova; + + DPAA2_BUS_DEBUG("VFIOdmamap 0x%"PRIx64":0x%"PRIx64",size 0x%"PRIx64"\n", + (uint64_t)dma_map.vaddr, (uint64_t)dma_map.iova, + (uint64_t)dma_map.size); + ret = ioctl(group->container->fd, VFIO_IOMMU_MAP_DMA, + &dma_map); + if (ret) { + printf("Unable to map DMA address (errno = %d)\n", + errno); + return ret; + } + + return 0; +} + int rte_fslmc_vfio_dmamap(void) { int i = 0, ret; @@ -381,28 +432,136 @@ int rte_fslmc_vfio_dmamap(void) return 0; } -static int64_t vfio_map_mcp_obj(struct fslmc_vfio_group *group, char *mcp_obj) +static int +fslmc_vfio_setup_device(const char *sysfs_base, const char *dev_addr, + int *vfio_dev_fd, struct vfio_device_info *device_info) +{ + struct vfio_group_status group_status = { + .argsz = sizeof(group_status) + }; + int vfio_group_fd, vfio_container_fd, iommu_group_no, ret; + + /* get group number */ + ret = rte_vfio_get_group_num(sysfs_base, dev_addr, &iommu_group_no); + if (ret < 0) + return -1; + + /* get the actual group fd */ + vfio_group_fd = rte_vfio_get_group_fd(iommu_group_no); + if (vfio_group_fd < 0) + return -1; + + /* if group_fd == 0, that means the device isn't managed by VFIO */ + if (vfio_group_fd == 0) { + RTE_LOG(WARNING, EAL, " %s not managed by VFIO driver, skipping\n", + dev_addr); + return 1; + } + + /* Opens main vfio file descriptor which represents the "container" */ + vfio_container_fd = rte_vfio_get_container_fd(); + if (vfio_container_fd < 0) { + DPAA2_BUS_ERR("Failed to open VFIO container"); + return -errno; + } + + /* check if the group is viable */ + ret = ioctl(vfio_group_fd, VFIO_GROUP_GET_STATUS, &group_status); + if (ret) { + DPAA2_BUS_ERR(" %s cannot get group status, " + "error %i (%s)\n", dev_addr, + errno, strerror(errno)); + close(vfio_group_fd); + rte_vfio_clear_group(vfio_group_fd); + return -1; + } else if (!(group_status.flags & VFIO_GROUP_FLAGS_VIABLE)) { + DPAA2_BUS_ERR(" %s VFIO group is not viable!\n", dev_addr); + close(vfio_group_fd); + rte_vfio_clear_group(vfio_group_fd); + return -1; + } + /* At this point, we know that this group is viable (meaning, + * all devices are either bound to VFIO or not bound to anything) + */ + + /* check if group does not have a container yet */ + if (!(group_status.flags & VFIO_GROUP_FLAGS_CONTAINER_SET)) { + + /* add group to a container */ + ret = ioctl(vfio_group_fd, VFIO_GROUP_SET_CONTAINER, + &vfio_container_fd); + if (ret) { + DPAA2_BUS_ERR(" %s cannot add VFIO group to container, " + "error %i (%s)\n", dev_addr, + errno, strerror(errno)); + close(vfio_group_fd); + close(vfio_container_fd); + rte_vfio_clear_group(vfio_group_fd); + return -1; + } + + /* + * set an IOMMU type for container + * + */ + if (ioctl(vfio_container_fd, VFIO_CHECK_EXTENSION, + fslmc_iommu_type)) { + ret = ioctl(vfio_container_fd, VFIO_SET_IOMMU, + fslmc_iommu_type); + if (ret) { + DPAA2_BUS_ERR("Failed to setup VFIO iommu"); + close(vfio_group_fd); + close(vfio_container_fd); + return -errno; + } + } else { + DPAA2_BUS_ERR("No supported IOMMU available"); + close(vfio_group_fd); + close(vfio_container_fd); + return -EINVAL; + } + } + + /* get a file descriptor for the device */ + *vfio_dev_fd = ioctl(vfio_group_fd, VFIO_GROUP_GET_DEVICE_FD, dev_addr); + if (*vfio_dev_fd < 0) { + /* if we cannot get a device fd, this implies a problem with + * the VFIO group or the container not having IOMMU configured. + */ + + DPAA2_BUS_WARN("Getting a vfio_dev_fd for %s failed", dev_addr); + close(vfio_group_fd); + close(vfio_container_fd); + rte_vfio_clear_group(vfio_group_fd); + return -1; + } + + /* test and setup the device */ + ret = ioctl(*vfio_dev_fd, VFIO_DEVICE_GET_INFO, device_info); + if (ret) { + DPAA2_BUS_ERR(" %s cannot get device info, error %i (%s)", + dev_addr, errno, strerror(errno)); + close(*vfio_dev_fd); + close(vfio_group_fd); + close(vfio_container_fd); + rte_vfio_clear_group(vfio_group_fd); + return -1; + } + + return 0; +} + +static intptr_t vfio_map_mcp_obj(const char *mcp_obj) { intptr_t v_addr = (intptr_t)MAP_FAILED; int32_t ret, mc_fd; + struct vfio_group_status status = { .argsz = sizeof(status) }; 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) { - DPAA2_BUS_ERR("Error in VFIO get dev %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) { - DPAA2_BUS_ERR("Error in VFIO getting DEVICE_INFO"); - goto MC_FAILURE; - } + fslmc_vfio_setup_device(SYSFS_FSL_MC_DEVICES, mcp_obj, + &mc_fd, &d_info); /* getting device region info*/ ret = ioctl(mc_fd, VFIO_DEVICE_GET_REGION_INFO, ®_info); @@ -535,19 +694,8 @@ fslmc_process_iodevices(struct rte_dpaa2_device *dev) struct vfio_device_info device_info = { .argsz = sizeof(device_info) }; struct rte_dpaa2_object *object = NULL; - dev_fd = ioctl(vfio_group.fd, VFIO_GROUP_GET_DEVICE_FD, - dev->device.name); - if (dev_fd <= 0) { - DPAA2_BUS_ERR("Unable to obtain device FD for device:%s", - dev->device.name); - return -1; - } - - if (ioctl(dev_fd, VFIO_DEVICE_GET_INFO, &device_info)) { - DPAA2_BUS_ERR("Unable to obtain information for device:%s", - dev->device.name); - return -1; - } + fslmc_vfio_setup_device(SYSFS_FSL_MC_DEVICES, dev->device.name, + &dev_fd, &device_info); switch (dev->dev_type) { case DPAA2_ETH: @@ -558,6 +706,7 @@ fslmc_process_iodevices(struct rte_dpaa2_device *dev) case DPAA2_IO: case DPAA2_CI: case DPAA2_BPOOL: + case DPAA2_DPRTC: case DPAA2_MUX: TAILQ_FOREACH(object, &dpaa2_obj_list, next) { if (dev->dev_type == object->dev_type) @@ -599,7 +748,7 @@ fslmc_process_mcp(struct rte_dpaa2_device *dev) goto cleanup; } - v_addr = vfio_map_mcp_obj(&vfio_group, dev_name); + v_addr = vfio_map_mcp_obj(dev->device.name); if (v_addr == (intptr_t)MAP_FAILED) { DPAA2_BUS_ERR("Error mapping region (errno = %d)", errno); ret = -1; @@ -714,6 +863,7 @@ fslmc_vfio_process_group(void) case DPAA2_CON: case DPAA2_CI: case DPAA2_BPOOL: + case DPAA2_DPRTC: case DPAA2_MUX: /* IN case of secondary processes, all control objects * like dpbp, dpcon, dpci are not initialized/required @@ -819,10 +969,10 @@ fslmc_vfio_setup_group(void) } /* Get Device information */ - ret = ioctl(vfio_group.fd, VFIO_GROUP_GET_DEVICE_FD, g_container); + ret = ioctl(vfio_group.fd, VFIO_GROUP_GET_DEVICE_FD, fslmc_container); if (ret < 0) { DPAA2_BUS_ERR("Error getting device %s fd from group %d", - g_container, vfio_group.groupid); + fslmc_container, vfio_group.groupid); close(vfio_group.fd); rte_vfio_clear_group(vfio_group.fd); return ret;