From 964b2f3bfb07ae95fcf4570269a6bc0e1c0affec Mon Sep 17 00:00:00 2001 From: Hemant Agrawal Date: Thu, 12 Apr 2018 11:53:37 +0530 Subject: [PATCH] vfio: export some internal functions This patch moves some of the internal vfio functions from eal_vfio.h to rte_vfio.h for common uses with "rte_" prefix. This patch also change the FSLMC bus usages from the internal VFIO functions to external ones with "rte_" prefix Signed-off-by: Hemant Agrawal Acked-by: Anatoly Burakov --- drivers/bus/fslmc/Makefile | 1 - drivers/bus/fslmc/fslmc_vfio.c | 7 +- drivers/bus/fslmc/fslmc_vfio.h | 2 - drivers/bus/fslmc/meson.build | 1 - lib/librte_eal/bsdapp/eal/eal.c | 20 +++++ lib/librte_eal/common/include/rte_vfio.h | 74 ++++++++++++++++++- lib/librte_eal/linuxapp/eal/eal_vfio.c | 45 +++++------ lib/librte_eal/linuxapp/eal/eal_vfio.h | 23 +----- .../linuxapp/eal/eal_vfio_mp_sync.c | 4 +- lib/librte_eal/rte_eal_version.map | 3 + 10 files changed, 126 insertions(+), 54 deletions(-) diff --git a/drivers/bus/fslmc/Makefile b/drivers/bus/fslmc/Makefile index 93870bae30..3aa34e26d0 100644 --- a/drivers/bus/fslmc/Makefile +++ b/drivers/bus/fslmc/Makefile @@ -16,7 +16,6 @@ CFLAGS += $(WERROR_FLAGS) CFLAGS += -I$(RTE_SDK)/drivers/bus/fslmc CFLAGS += -I$(RTE_SDK)/drivers/bus/fslmc/mc CFLAGS += -I$(RTE_SDK)/drivers/bus/fslmc/qbman/include -CFLAGS += -I$(RTE_SDK)/lib/librte_eal/linuxapp/eal CFLAGS += -I$(RTE_SDK)/lib/librte_eal/common LDLIBS += -lrte_eal -lrte_mbuf -lrte_mempool -lrte_ring LDLIBS += -lrte_ethdev diff --git a/drivers/bus/fslmc/fslmc_vfio.c b/drivers/bus/fslmc/fslmc_vfio.c index 625fa7cd4a..4036e82945 100644 --- a/drivers/bus/fslmc/fslmc_vfio.c +++ b/drivers/bus/fslmc/fslmc_vfio.c @@ -91,7 +91,8 @@ fslmc_get_container_group(int *groupid) } /* get group number */ - ret = vfio_get_group_no(SYSFS_FSL_MC_DEVICES, g_container, groupid); + ret = rte_vfio_get_group_num(SYSFS_FSL_MC_DEVICES, + g_container, groupid); if (ret <= 0) { DPAA2_BUS_ERR("Unable to find %s IOMMU group", g_container); return -1; @@ -124,7 +125,7 @@ vfio_connect_container(void) } /* Opens main vfio file descriptor which represents the "container" */ - fd = vfio_get_container_fd(); + fd = rte_vfio_get_container_fd(); if (fd < 0) { DPAA2_BUS_ERR("Failed to open VFIO container"); return -errno; @@ -726,7 +727,7 @@ fslmc_vfio_setup_group(void) } /* Get the actual group fd */ - ret = vfio_get_group_fd(groupid); + ret = rte_vfio_get_group_fd(groupid); if (ret < 0) return ret; vfio_group.fd = ret; diff --git a/drivers/bus/fslmc/fslmc_vfio.h b/drivers/bus/fslmc/fslmc_vfio.h index e8fb3445f5..9e2c4feefe 100644 --- a/drivers/bus/fslmc/fslmc_vfio.h +++ b/drivers/bus/fslmc/fslmc_vfio.h @@ -10,8 +10,6 @@ #include -#include "eal_vfio.h" - #define DPAA2_MC_DPNI_DEVID 7 #define DPAA2_MC_DPSECI_DEVID 3 #define DPAA2_MC_DPCON_DEVID 5 diff --git a/drivers/bus/fslmc/meson.build b/drivers/bus/fslmc/meson.build index e94340eae4..78f9d92065 100644 --- a/drivers/bus/fslmc/meson.build +++ b/drivers/bus/fslmc/meson.build @@ -22,6 +22,5 @@ sources = files('fslmc_bus.c', allow_experimental_apis = true -includes += include_directories('../../../lib/librte_eal/linuxapp/eal') includes += include_directories('mc', 'qbman/include', 'portal') cflags += ['-D_GNU_SOURCE'] diff --git a/lib/librte_eal/bsdapp/eal/eal.c b/lib/librte_eal/bsdapp/eal/eal.c index 727adc5d2c..bfbec0d7f0 100644 --- a/lib/librte_eal/bsdapp/eal/eal.c +++ b/lib/librte_eal/bsdapp/eal/eal.c @@ -818,3 +818,23 @@ rte_vfio_dma_unmap(uint64_t __rte_unused vaddr, uint64_t __rte_unused iova, { return -1; } + +int __rte_experimental +rte_vfio_get_group_num(__rte_unused const char *sysfs_base, + __rte_unused const char *dev_addr, + __rte_unused int *iommu_group_num) +{ + return -1; +} + +int __rte_experimental +rte_vfio_get_container_fd(void) +{ + return -1; +} + +int __rte_experimental +rte_vfio_get_group_fd(__rte_unused int iommu_group_num) +{ + return -1; +} diff --git a/lib/librte_eal/common/include/rte_vfio.h b/lib/librte_eal/common/include/rte_vfio.h index f363cac6a9..c4a2e606fb 100644 --- a/lib/librte_eal/common/include/rte_vfio.h +++ b/lib/librte_eal/common/include/rte_vfio.h @@ -37,6 +37,13 @@ extern "C" { #endif +/* NOIOMMU is defined from kernel version 4.5 onwards */ +#ifdef VFIO_NOIOMMU_IOMMU +#define RTE_VFIO_NOIOMMU VFIO_NOIOMMU_IOMMU +#else +#define RTE_VFIO_NOIOMMU 8 +#endif + /** * Setup vfio_cfg for the device identified by its address. * It discovers the configured I/O MMU groups or sets a new one for the device. @@ -128,7 +135,19 @@ int rte_vfio_is_enabled(const char *modname); */ int rte_vfio_noiommu_is_enabled(void); -/* remove group fd from internal VFIO group fd array */ +/** + * Remove group fd from internal VFIO group fd array/ + * + * This function is only relevant to linux and will return + * an error on BSD. + * + * @param vfio_group_fd + * VFIO Grouup FD. + * + * @return + * 0 on success. + * <0 on failure. + */ int rte_vfio_clear_group(int vfio_group_fd); @@ -170,8 +189,61 @@ rte_vfio_dma_map(uint64_t vaddr, uint64_t iova, uint64_t len); * 0 if success. * -1 on error. */ + int __rte_experimental rte_vfio_dma_unmap(uint64_t vaddr, uint64_t iova, uint64_t len); +/** + * Parse IOMMU group number for a device + * + * This function is only relevant to linux and will return + * an error on BSD. + * + * @param sysfs_base + * sysfs path prefix. + * + * @param dev_addr + * device location. + * + * @param iommu_group_num + * iommu group number + * + * @return + * >0 on success + * 0 for non-existent group or VFIO + * <0 for errors + */ +int __rte_experimental +rte_vfio_get_group_num(const char *sysfs_base, + const char *dev_addr, int *iommu_group_num); + +/** + * Open VFIO container fd or get an existing one + * + * This function is only relevant to linux and will return + * an error on BSD. + * + * @return + * > 0 container fd + * < 0 for errors + */ +int __rte_experimental +rte_vfio_get_container_fd(void); + +/** + * Open VFIO group fd or get an existing one + * + * This function is only relevant to linux and will return + * an error on BSD. + * + * @param iommu_group_num + * iommu group number + * + * @return + * > 0 group fd + * < 0 for errors + */ +int __rte_experimental +rte_vfio_get_group_fd(int iommu_group_num); #ifdef __cplusplus } diff --git a/lib/librte_eal/linuxapp/eal/eal_vfio.c b/lib/librte_eal/linuxapp/eal/eal_vfio.c index 589d7d4787..984b1a123a 100644 --- a/lib/librte_eal/linuxapp/eal/eal_vfio.c +++ b/lib/librte_eal/linuxapp/eal/eal_vfio.c @@ -284,7 +284,7 @@ compact_user_maps(void) } int -vfio_get_group_fd(int iommu_group_no) +rte_vfio_get_group_fd(int iommu_group_num) { int i; int vfio_group_fd; @@ -293,7 +293,7 @@ vfio_get_group_fd(int iommu_group_no) /* check if we already have the group descriptor open */ for (i = 0; i < VFIO_MAX_GROUPS; i++) - if (vfio_cfg.vfio_groups[i].group_no == iommu_group_no) + if (vfio_cfg.vfio_groups[i].group_num == iommu_group_num) return vfio_cfg.vfio_groups[i].fd; /* Lets see first if there is room for a new group */ @@ -304,7 +304,7 @@ vfio_get_group_fd(int iommu_group_no) /* Now lets get an index for the new group */ for (i = 0; i < VFIO_MAX_GROUPS; i++) - if (vfio_cfg.vfio_groups[i].group_no == -1) { + if (vfio_cfg.vfio_groups[i].group_num == -1) { cur_grp = &vfio_cfg.vfio_groups[i]; break; } @@ -318,7 +318,7 @@ vfio_get_group_fd(int iommu_group_no) if (internal_config.process_type == RTE_PROC_PRIMARY) { /* try regular group format */ snprintf(filename, sizeof(filename), - VFIO_GROUP_FMT, iommu_group_no); + VFIO_GROUP_FMT, iommu_group_num); vfio_group_fd = open(filename, O_RDWR); if (vfio_group_fd < 0) { /* if file not found, it's not an error */ @@ -330,7 +330,8 @@ vfio_get_group_fd(int iommu_group_no) /* special case: try no-IOMMU path as well */ snprintf(filename, sizeof(filename), - VFIO_NOIOMMU_GROUP_FMT, iommu_group_no); + VFIO_NOIOMMU_GROUP_FMT, + iommu_group_num); vfio_group_fd = open(filename, O_RDWR); if (vfio_group_fd < 0) { if (errno != ENOENT) { @@ -343,7 +344,7 @@ vfio_get_group_fd(int iommu_group_no) /* noiommu group found */ } - cur_grp->group_no = iommu_group_no; + cur_grp->group_num = iommu_group_num; cur_grp->fd = vfio_group_fd; vfio_cfg.vfio_active_groups++; return vfio_group_fd; @@ -365,7 +366,7 @@ vfio_get_group_fd(int iommu_group_no) close(socket_fd); return -1; } - if (vfio_mp_sync_send_request(socket_fd, iommu_group_no) < 0) { + if (vfio_mp_sync_send_request(socket_fd, iommu_group_num) < 0) { RTE_LOG(ERR, EAL, " cannot send group number!\n"); close(socket_fd); return -1; @@ -380,7 +381,7 @@ vfio_get_group_fd(int iommu_group_no) /* if we got the fd, store it and return it */ if (vfio_group_fd > 0) { close(socket_fd); - cur_grp->group_no = iommu_group_no; + cur_grp->group_num = iommu_group_num; cur_grp->fd = vfio_group_fd; vfio_cfg.vfio_active_groups++; return vfio_group_fd; @@ -487,7 +488,7 @@ rte_vfio_clear_group(int vfio_group_fd) i = get_vfio_group_idx(vfio_group_fd); if (i < 0) return -1; - vfio_cfg.vfio_groups[i].group_no = -1; + vfio_cfg.vfio_groups[i].group_num = -1; vfio_cfg.vfio_groups[i].fd = -1; vfio_cfg.vfio_groups[i].devices = 0; vfio_cfg.vfio_active_groups--; @@ -544,11 +545,11 @@ rte_vfio_setup_device(const char *sysfs_base, const char *dev_addr, .argsz = sizeof(group_status) }; int vfio_group_fd; - int iommu_group_no; + int iommu_group_num; int i, ret; /* get group number */ - ret = vfio_get_group_no(sysfs_base, dev_addr, &iommu_group_no); + ret = rte_vfio_get_group_num(sysfs_base, dev_addr, &iommu_group_num); if (ret == 0) { RTE_LOG(WARNING, EAL, " %s not managed by VFIO driver, skipping\n", dev_addr); @@ -560,7 +561,7 @@ rte_vfio_setup_device(const char *sysfs_base, const char *dev_addr, return -1; /* get the actual group fd */ - vfio_group_fd = vfio_get_group_fd(iommu_group_no); + vfio_group_fd = rte_vfio_get_group_fd(iommu_group_num); if (vfio_group_fd < 0) return -1; @@ -733,7 +734,7 @@ rte_vfio_release_device(const char *sysfs_base, const char *dev_addr, .argsz = sizeof(group_status) }; int vfio_group_fd; - int iommu_group_no; + int iommu_group_num; int ret; /* we don't want any DMA mapping messages to come while we're detaching @@ -743,7 +744,7 @@ rte_vfio_release_device(const char *sysfs_base, const char *dev_addr, rte_rwlock_read_lock(mem_lock); /* get group number */ - ret = vfio_get_group_no(sysfs_base, dev_addr, &iommu_group_no); + ret = rte_vfio_get_group_num(sysfs_base, dev_addr, &iommu_group_num); if (ret <= 0) { RTE_LOG(WARNING, EAL, " %s not managed by VFIO driver\n", dev_addr); @@ -753,9 +754,9 @@ rte_vfio_release_device(const char *sysfs_base, const char *dev_addr, } /* get the actual group fd */ - vfio_group_fd = vfio_get_group_fd(iommu_group_no); + vfio_group_fd = rte_vfio_get_group_fd(iommu_group_num); if (vfio_group_fd <= 0) { - RTE_LOG(INFO, EAL, "vfio_get_group_fd failed for %s\n", + RTE_LOG(INFO, EAL, "rte_vfio_get_group_fd failed for %s\n", dev_addr); ret = -1; goto out; @@ -818,7 +819,7 @@ rte_vfio_enable(const char *modname) for (i = 0; i < VFIO_MAX_GROUPS; i++) { vfio_cfg.vfio_groups[i].fd = -1; - vfio_cfg.vfio_groups[i].group_no = -1; + vfio_cfg.vfio_groups[i].group_num = -1; vfio_cfg.vfio_groups[i].devices = 0; } @@ -841,7 +842,7 @@ rte_vfio_enable(const char *modname) return 0; } - vfio_cfg.vfio_container_fd = vfio_get_container_fd(); + vfio_cfg.vfio_container_fd = rte_vfio_get_container_fd(); /* check if we have VFIO driver enabled */ if (vfio_cfg.vfio_container_fd != -1) { @@ -919,7 +920,7 @@ vfio_has_supported_extensions(int vfio_container_fd) } int -vfio_get_container_fd(void) +rte_vfio_get_container_fd(void) { int ret, vfio_container_fd; @@ -983,8 +984,8 @@ vfio_get_container_fd(void) } int -vfio_get_group_no(const char *sysfs_base, - const char *dev_addr, int *iommu_group_no) +rte_vfio_get_group_num(const char *sysfs_base, + const char *dev_addr, int *iommu_group_num) { char linkname[PATH_MAX]; char filename[PATH_MAX]; @@ -1016,7 +1017,7 @@ vfio_get_group_no(const char *sysfs_base, errno = 0; group_tok = tok[ret - 1]; end = group_tok; - *iommu_group_no = strtol(group_tok, &end, 10); + *iommu_group_num = strtol(group_tok, &end, 10); if ((end != group_tok && *end != '\0') || errno != 0) { RTE_LOG(ERR, EAL, " %s error parsing IOMMU number!\n", dev_addr); return -1; diff --git a/lib/librte_eal/linuxapp/eal/eal_vfio.h b/lib/librte_eal/linuxapp/eal/eal_vfio.h index 549f4427e4..c788bba44c 100644 --- a/lib/librte_eal/linuxapp/eal/eal_vfio.h +++ b/lib/librte_eal/linuxapp/eal/eal_vfio.h @@ -81,12 +81,6 @@ struct vfio_iommu_spapr_tce_info { #define RTE_VFIO_SPAPR VFIO_SPAPR_TCE_v2_IOMMU #endif -#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 5, 0) -#define RTE_VFIO_NOIOMMU 8 -#else -#define RTE_VFIO_NOIOMMU VFIO_NOIOMMU_IOMMU -#endif - #define VFIO_MAX_GROUPS RTE_MAX_VFIO_GROUPS /* @@ -103,7 +97,7 @@ int vfio_mp_sync_connect_to_primary(void); * the group fd via an ioctl() call. */ struct vfio_group { - int group_no; + int group_num; int fd; int devices; }; @@ -145,21 +139,6 @@ vfio_set_iommu_type(int vfio_container_fd); int vfio_has_supported_extensions(int vfio_container_fd); -/* open container fd or get an existing one */ -int -vfio_get_container_fd(void); - -/* parse IOMMU group number for a device - * returns 1 on success, -1 for errors, 0 for non-existent group - */ -int -vfio_get_group_no(const char *sysfs_base, - const char *dev_addr, int *iommu_group_no); - -/* open group fd or get an existing one */ -int -vfio_get_group_fd(int iommu_group_no); - int vfio_mp_sync_setup(void); #define SOCKET_REQ_CONTAINER 0x100 diff --git a/lib/librte_eal/linuxapp/eal/eal_vfio_mp_sync.c b/lib/librte_eal/linuxapp/eal/eal_vfio_mp_sync.c index 7cc3c1527c..e19b571bd2 100644 --- a/lib/librte_eal/linuxapp/eal/eal_vfio_mp_sync.c +++ b/lib/librte_eal/linuxapp/eal/eal_vfio_mp_sync.c @@ -267,7 +267,7 @@ vfio_mp_sync_thread(void __rte_unused * arg) switch (ret) { case SOCKET_REQ_CONTAINER: - fd = vfio_get_container_fd(); + fd = rte_vfio_get_container_fd(); if (fd < 0) vfio_mp_sync_send_request(conn_sock, SOCKET_ERR); else @@ -283,7 +283,7 @@ vfio_mp_sync_thread(void __rte_unused * arg) continue; } - fd = vfio_get_group_fd(vfio_data); + fd = rte_vfio_get_group_fd(vfio_data); if (fd < 0) vfio_mp_sync_send_request(conn_sock, SOCKET_ERR); diff --git a/lib/librte_eal/rte_eal_version.map b/lib/librte_eal/rte_eal_version.map index 2b5b1dcf50..603c744b99 100644 --- a/lib/librte_eal/rte_eal_version.map +++ b/lib/librte_eal/rte_eal_version.map @@ -286,5 +286,8 @@ EXPERIMENTAL { rte_socket_id_by_idx; rte_vfio_dma_map; rte_vfio_dma_unmap; + rte_vfio_get_container_fd; + rte_vfio_get_group_fd; + rte_vfio_get_group_num; } DPDK_18.02; -- 2.20.1