X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=drivers%2Fbus%2Ffslmc%2Ffslmc_vfio.c;h=970969d2bfb0b7c5f1d0c68a0794342a1fdeb006;hb=f31d17807236094268ccd1bead5d740a10fec513;hp=cb33dd89139f71e47234b8c51d0d3c71fea2269d;hpb=5282bb1c3695eb8f00d3bda3636c4da3332570ba;p=dpdk.git diff --git a/drivers/bus/fslmc/fslmc_vfio.c b/drivers/bus/fslmc/fslmc_vfio.c index cb33dd8913..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 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); @@ -176,7 +177,7 @@ static int vfio_map_irq_region(struct fslmc_vfio_group *group) vaddr = (unsigned long *)mmap(NULL, 0x1000, PROT_WRITE | PROT_READ, MAP_SHARED, container_device_fd, 0x6030000); if (vaddr == MAP_FAILED) { - DPAA2_BUS_ERR("Unable to map region (errno = %d)", errno); + DPAA2_BUS_INFO("Unable to map region (errno = %d)", errno); return -errno; } @@ -221,6 +222,13 @@ fslmc_memevent_cb(enum rte_mem_event type, const void *addr, size_t len, "alloc" : "dealloc", va, virt_addr, iova_addr, map_len); + /* iova_addr may be set to RTE_BAD_IOVA */ + if (iova_addr == RTE_BAD_IOVA) { + DPAA2_BUS_DEBUG("Segment has invalid iova, skipping\n"); + cur_len += map_len; + continue; + } + if (type == RTE_MEM_EVENT_ALLOC) ret = fslmc_map_dma(virt_addr, iova_addr, map_len); else @@ -254,6 +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; @@ -293,6 +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; @@ -337,17 +355,55 @@ 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; - struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config; - rte_rwlock_t *mem_lock = &mcfg->memory_hotplug_lock; /* Lock before parsing and registering callback to memory subsystem */ - rte_rwlock_read_lock(mem_lock); + rte_mcfg_mem_read_lock(); if (rte_memseg_walk(fslmc_dmamap_seg, &i) < 0) { - rte_rwlock_read_unlock(mem_lock); + rte_mcfg_mem_read_unlock(); return -1; } @@ -371,33 +427,141 @@ int rte_fslmc_vfio_dmamap(void) /* Existing segments have been mapped and memory callback for hotplug * has been installed. */ - rte_rwlock_read_unlock(mem_lock); + rte_mcfg_mem_read_unlock(); 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); @@ -530,19 +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: @@ -553,6 +706,8 @@ 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) object->create(dev_fd, &device_info, @@ -593,7 +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; @@ -602,6 +757,15 @@ fslmc_process_mcp(struct rte_dpaa2_device *dev) /* check the MC version compatibility */ dpmng.regs = (void *)v_addr; + + /* In case of secondary processes, MC version check is no longer + * required. + */ + if (rte_eal_process_type() == RTE_PROC_SECONDARY) { + rte_mcp_ptr_list[0] = (void *)v_addr; + return 0; + } + if (mc_get_version(&dpmng, CMD_PRI_LOW, &mc_ver_info)) { DPAA2_BUS_ERR("Unable to obtain MC version"); ret = -1; @@ -645,6 +809,15 @@ fslmc_vfio_process_group(void) /* Search the MCP as that should be initialized first. */ TAILQ_FOREACH_SAFE(dev, &rte_fslmc_bus.device_list, next, dev_temp) { if (dev->dev_type == DPAA2_MPORTAL) { + if (dev->device.devargs && + dev->device.devargs->policy == RTE_DEV_BLACKLISTED) { + DPAA2_BUS_LOG(DEBUG, "%s Blacklisted, skipping", + dev->device.name); + TAILQ_REMOVE(&rte_fslmc_bus.device_list, + dev, next); + continue; + } + ret = fslmc_process_mcp(dev); if (ret) { DPAA2_BUS_ERR("Unable to map MC Portal"); @@ -669,6 +842,13 @@ fslmc_vfio_process_group(void) } TAILQ_FOREACH_SAFE(dev, &rte_fslmc_bus.device_list, next, dev_temp) { + if (dev->device.devargs && + dev->device.devargs->policy == RTE_DEV_BLACKLISTED) { + DPAA2_BUS_LOG(DEBUG, "%s Blacklisted, skipping", + dev->device.name); + TAILQ_REMOVE(&rte_fslmc_bus.device_list, dev, next); + continue; + } switch (dev->dev_type) { case DPAA2_ETH: case DPAA2_CRYPTO: @@ -681,9 +861,18 @@ fslmc_vfio_process_group(void) } break; case DPAA2_CON: - case DPAA2_IO: 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 + * - all of these are assumed to be initialized and made + * available by primary. + */ + if (rte_eal_process_type() == RTE_PROC_SECONDARY) + continue; + /* Call the object creation routine and remove the * device entry from device list */ @@ -694,12 +883,15 @@ fslmc_vfio_process_group(void) return -1; } - /* This device is not required to be in the DPDK - * exposed device list. - */ - TAILQ_REMOVE(&rte_fslmc_bus.device_list, dev, next); - free(dev); - dev = NULL; + break; + case DPAA2_IO: + ret = fslmc_process_iodevices(dev); + if (ret) { + DPAA2_BUS_DEBUG("Dev (%s) init failed", + dev->device.name); + return -1; + } + break; case DPAA2_UNKNOWN: default: @@ -777,10 +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;