From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EDCBD606A31E for ; Wed, 21 Oct 2026 04:14:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=Ep74TgXO Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B2E9910EC4B; Wed, 21 Oct 2026 04:14:04 +0000 (UTC) Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.16]) by gabe.freedesktop.org (Postfix) with ESMTPS id E3EE010EC3A for ; Wed, 21 Oct 2026 04:13:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1792556034; x=1824092034; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=uQMQjErGN4Nz/TxgPPkK2TY06ZYNnbmZmvySVYU9oTQ=; b=Ep74TgXO3GXl/q0qyBdkNqG3fDqIsTQeDjnBatUNc/2MKr7BfNgZBkqA lCEDqkzk/6hW8dhA377Nw8aewFwTDC8kaNZt2LkibU3uWo0ctOGnvyQM2 gloaM1qLMBvpyJtMsx7F23hWYaUuYDxEMjxaEeRR9wuitZFi4FxslNEqa mqxKT8fTTJ2yEcTdF6rD4Smm4Kr0PoJXJNAQ8f6UUqKDddKtA+dm4l+2G b5kFvX/6Y39INTQ6tJajALBILEYmx4wR4hvntHjDhK15LZOoyk4yRLORQ 9ddqLDPrKK1p52x8YSJMYhEbd6pDlw1jXMSZ3sptKaVfmPgBOdLkZZ30C Q==; X-CSE-ConnectionGUID: WithjCTpRZWmBNqULhiE3Q== X-CSE-MsgGUID: FsF6jE7eTOOoPQne7SHfhg== X-IronPort-AV: E=McAfee;i="6800,10657,11941"; a="1264315" X-IronPort-AV: E=Sophos;i="6.27,169,1787036400"; d="scan'208";a="1264315" Received: from orviesa008.jf.intel.com ([10.64.159.148]) by orvoesa108.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Oct 2026 21:13:52 -0700 X-CSE-ConnectionGUID: zbg4jW34SQKDYZaX2vMrsg== X-CSE-MsgGUID: Tde9ENQLTg2WQdgtdGSAkg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,169,1787036400"; d="scan'208";a="2868694" Received: from gfx-coremm-kmd15.iind.intel.com ([10.223.55.8]) by orviesa008.jf.intel.com with ESMTP; 20 Oct 2026 21:13:51 -0700 From: Nareshkumar Gollakoti To: intel-xe@lists.freedesktop.org Cc: himal.prasad.ghimiray@intel.com, Nareshkumar Gollakoti Subject: [PATCH 3/6] drm/xe/vm: add helper to retrieve VM SVA PASID Date: Wed, 21 Oct 2026 09:41:14 +0530 Message-ID: <20261021041117.1774877-4-naresh.kumar.g@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20261021041117.1774877-1-naresh.kumar.g@intel.com> References: <20261021041117.1774877-1-naresh.kumar.g@intel.com> X-Archived-By: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: intel-xe@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Xe graphics driver List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Intel-xe" X-Spam-Status: No, score=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 Add xe_vm_get_sva_pasid() to return the PASID associated with a VM SVA binding. The helper checks whether the VM has a valid SVA handle and, if so, returns the PASID obtained from iommu_sva_get_pasid(). If no SVA handle is present, return -EINVAL. Export the helper in xe_vm.h so other XE components can query the VM's PASID when programming per-context state. Signed-off-by: Nareshkumar Gollakoti --- drivers/gpu/drm/xe/xe_vm.c | 16 ++++++++++++++++ drivers/gpu/drm/xe/xe_vm.h | 2 ++ 2 files changed, 18 insertions(+) diff --git a/drivers/gpu/drm/xe/xe_vm.c b/drivers/gpu/drm/xe/xe_vm.c index b1d37e5a673f..dcaeeeb94721 100644 --- a/drivers/gpu/drm/xe/xe_vm.c +++ b/drivers/gpu/drm/xe/xe_vm.c @@ -1649,6 +1649,22 @@ static void xe_vm_init_prove_locking(struct xe_device *xe, struct xe_vm *vm) up_read(&vm->exec_queues.lock); } +/** + * xe_vm_get_sva_pasid() - get sva pasid for the vm if allocated + * @vm: The vm to get valid sva_handle + * + * Helper to get associated pasid for the vm which uses svm. + * + * Return: %pasid value on Success. -EINVAL if not pasid available. + */ +int xe_vm_get_sva_pasid(struct xe_vm *vm) +{ + if (!vm || !vm->sva_handle) + return -EINVAL; + + return iommu_sva_get_pasid(vm->sva_handle); +} + static void xe_vm_sva_handle_init(struct xe_vm *vm) { struct device *dev = vm->xe->drm.dev; diff --git a/drivers/gpu/drm/xe/xe_vm.h b/drivers/gpu/drm/xe/xe_vm.h index 89c4f95984a2..fe10fd91cdfa 100644 --- a/drivers/gpu/drm/xe/xe_vm.h +++ b/drivers/gpu/drm/xe/xe_vm.h @@ -290,6 +290,8 @@ struct dma_fence *xe_vm_bind_kernel_bo(struct xe_vm *vm, struct xe_bo *bo, void xe_vm_resume_rebind_worker(struct xe_vm *vm); +int xe_vm_get_sva_pasid(struct xe_vm *vm); + /** * xe_vm_resv() - Return's the vm's reservation object * @vm: The vm -- 2.43.0