From cedca4d3635cde049151b5818df2cb66c2b1531f Mon Sep 17 00:00:00 2001 From: Zhenzhong Duan Date: Fri, 3 Nov 2023 16:54:01 +0800 Subject: [PATCH] backends/iommufd: Add helpers for invalidating user-managed HWPT Signed-off-by: Nicolin Chen Signed-off-by: Zhenzhong Duan --- backends/iommufd.c | 30 ++++++++++++++++++++++++++++++ backends/trace-events | 1 + include/sysemu/iommufd.h | 3 +++ 3 files changed, 34 insertions(+) diff --git a/backends/iommufd.c b/backends/iommufd.c index c1260766f0..cf24370385 100644 --- a/backends/iommufd.c +++ b/backends/iommufd.c @@ -330,6 +330,36 @@ bool iommufd_backend_get_device_info(IOMMUFDBackend *be, uint32_t devid, return true; } +int iommufd_backend_invalidate_cache(IOMMUFDBackend *be, uint32_t hwpt_id, + uint32_t data_type, uint32_t entry_len, + uint32_t *entry_num, void *data_ptr) +{ + int ret, fd = be->fd; + struct iommu_hwpt_invalidate cache = { + .size = sizeof(cache), + .hwpt_id = hwpt_id, + .data_type = data_type, + .entry_len = entry_len, + .entry_num = *entry_num, + .data_uptr = (uintptr_t)data_ptr, + }; + + ret = ioctl(fd, IOMMU_HWPT_INVALIDATE, &cache); + + trace_iommufd_backend_invalidate_cache(fd, hwpt_id, data_type, entry_len, + *entry_num, cache.entry_num, + (uintptr_t)data_ptr, ret); + if (ret) { + *entry_num = cache.entry_num; + error_report("IOMMU_HWPT_INVALIDATE failed: %s", strerror(errno)); + ret = -errno; + } else { + g_assert(*entry_num == cache.entry_num); + } + + return ret; +} + static int hiod_iommufd_get_cap(HostIOMMUDevice *hiod, int cap, Error **errp) { HostIOMMUDeviceCaps *caps = &hiod->caps; diff --git a/backends/trace-events b/backends/trace-events index b02433710a..ef0ff98921 100644 --- a/backends/trace-events +++ b/backends/trace-events @@ -18,3 +18,4 @@ iommufd_backend_alloc_hwpt(int iommufd, uint32_t dev_id, uint32_t pt_id, uint32_ iommufd_backend_free_id(int iommufd, uint32_t id, int ret) " iommufd=%d id=%d (%d)" iommufd_backend_set_dirty(int iommufd, uint32_t hwpt_id, bool start, int ret) " iommufd=%d hwpt=%u enable=%d (%d)" iommufd_backend_get_dirty_bitmap(int iommufd, uint32_t hwpt_id, uint64_t iova, uint64_t size, uint64_t page_size, int ret) " iommufd=%d hwpt=%u iova=0x%"PRIx64" size=0x%"PRIx64" page_size=0x%"PRIx64" (%d)" +iommufd_backend_invalidate_cache(int iommufd, uint32_t hwpt_id, uint32_t data_type, uint32_t entry_len, uint32_t entry_num, uint32_t done_num, uint64_t data_ptr, int ret) " iommufd=%d hwpt_id=%u data_type=%u entry_len=%u entry_num=%u done_num=%u data_ptr=0x%"PRIx64" (%d)" diff --git a/include/sysemu/iommufd.h b/include/sysemu/iommufd.h index 3b28c8a81c..f6596f6338 100644 --- a/include/sysemu/iommufd.h +++ b/include/sysemu/iommufd.h @@ -63,6 +63,9 @@ bool iommufd_backend_get_dirty_bitmap(IOMMUFDBackend *be, uint32_t hwpt_id, uint64_t iova, ram_addr_t size, uint64_t page_size, uint64_t *data, Error **errp); +int iommufd_backend_invalidate_cache(IOMMUFDBackend *be, uint32_t hwpt_id, + uint32_t data_type, uint32_t entry_len, + uint32_t *entry_num, void *data_ptr); #define TYPE_HOST_IOMMU_DEVICE_IOMMUFD TYPE_HOST_IOMMU_DEVICE "-iommufd" #endif -- 2.41.0.windows.1