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([10.1.84.79]) by fmviesa002.fm.intel.com with ESMTP; 05 Jan 2026 00:47:50 -0800 From: nishit.sharma@intel.com To: igt-dev@lists.freedesktop.org, nishit.sharma@intel.com, sai.gowtham.ch@intel.com Subject: [PATCH i-g-t v14 03/11] lib/xe: Add synchronous helpers for VM bind/unbind operations Date: Mon, 5 Jan 2026 08:47:42 +0000 Message-ID: <20260105084750.190346-4-nishit.sharma@intel.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20260105084750.190346-1-nishit.sharma@intel.com> References: <20260105084750.190346-1-nishit.sharma@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: igt-dev@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development mailing list for IGT GPU Tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: igt-dev-bounces@lists.freedesktop.org Sender: "igt-dev" From: Nishit Sharma Introduce synchronous wrappers for VM bind/unbind operations that handle user fence allocation, waiting, and cleanup internally. This simplifies test code by eliminating repetitive synchronization boilerplate. Signed-off-by: Nishit Sharma Reviewed-by: Thomas Hellström Reviewed-by: Pravalika Gurram --- lib/xe/xe_ioctl.c | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/lib/xe/xe_ioctl.c b/lib/xe/xe_ioctl.c index e3efe12ad..16aae05c9 100644 --- a/lib/xe/xe_ioctl.c +++ b/lib/xe/xe_ioctl.c @@ -774,3 +774,42 @@ void xe_vm_madvise(int fd, uint32_t vm, uint64_t addr, uint64_t range, igt_assert_eq(__xe_vm_madvise(fd, vm, addr, range, ext, type, op_val, policy, instance), 0); } + +#define BIND_SYNC_VAL 0x686868 +void xe_vm_bind_lr_sync(int fd, uint32_t vm, uint32_t bo, uint64_t offset, + uint64_t addr, uint64_t size, uint32_t flags) +{ + volatile uint64_t *sync_addr = malloc(sizeof(*sync_addr)); + struct drm_xe_sync sync = { + .flags = DRM_XE_SYNC_FLAG_SIGNAL, + .type = DRM_XE_SYNC_TYPE_USER_FENCE, + .addr = to_user_pointer((uint64_t *)sync_addr), + .timeline_value = BIND_SYNC_VAL, + }; + + igt_assert(!!sync_addr); + xe_vm_bind_async_flags(fd, vm, 0, bo, 0, addr, size, &sync, 1, flags); + if (*sync_addr != BIND_SYNC_VAL) + xe_wait_ufence(fd, (uint64_t *)sync_addr, BIND_SYNC_VAL, 0, NSEC_PER_SEC * 10); + /* Only free if the wait succeeds */ + free((void *)sync_addr); +} + +void xe_vm_unbind_lr_sync(int fd, uint32_t vm, uint64_t offset, + uint64_t addr, uint64_t size) +{ + volatile uint64_t *sync_addr = malloc(sizeof(*sync_addr)); + struct drm_xe_sync sync = { + .flags = DRM_XE_SYNC_FLAG_SIGNAL, + .type = DRM_XE_SYNC_TYPE_USER_FENCE, + .addr = to_user_pointer((uint64_t *)sync_addr), + .timeline_value = BIND_SYNC_VAL, + }; + + igt_assert(!!sync_addr); + *sync_addr = 0; + xe_vm_unbind_async(fd, vm, 0, 0, addr, size, &sync, 1); + if (*sync_addr != BIND_SYNC_VAL) + xe_wait_ufence(fd, (uint64_t *)sync_addr, BIND_SYNC_VAL, 0, NSEC_PER_SEC * 10); + free((void *)sync_addr); +} -- 2.48.1