From patchwork Thu Feb 22 23:16:32 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Elliot Berman X-Patchwork-Id: 775235 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3985E14F978; Thu, 22 Feb 2024 23:17:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.180.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708643844; cv=none; b=tGubA9J7CnMx0y6wGristT0HVZ5/I/U6FsUdXaycmAbsrioG99hqQ21HKHkcsw3cZtaGTXxknL5v7scjRGSm0sbF1y+hPCJpUL9veEZGxbDumPRY1JcHbb5m3BahvOPz5d/uPVZNP2waNLrX3t/KinIjsA9ughHk3UPnz5v9fuc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708643844; c=relaxed/simple; bh=AmQPEPQoN5MgZqk2VSPCqhTvsXMQY0fsD9CmySZU7YE=; h=From:Date:Subject:MIME-Version:Content-Type:Message-ID:References: In-Reply-To:To:CC; b=S1wQ8c98C30dGwe/379P1pZAZ77TYe5p8+U6xH8/qFlDWFroKAwj9JcINS06wwYfcBO3ucx9jxhYI4R/kZVuRCNs1BCks392uR2tKGXwQ01BCYt6hx5KScIuku5wRSdO36KyXGKLCnWAjg011uYYEtfOBvOrHjbgjdwSkp7mMzs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=quicinc.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=ixa7SQjr; arc=none smtp.client-ip=205.220.180.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="ixa7SQjr" Received: from pps.filterd (m0279872.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 41MKvtBL022871; Thu, 22 Feb 2024 23:16:33 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= from:date:subject:mime-version:content-type :content-transfer-encoding:message-id:references:in-reply-to:to :cc; s=qcppdkim1; bh=Eos+4QsQMLDq3hpbjG+KYOjvUTdDf9AT0ygZFi6k3VQ =; b=ixa7SQjrNI3DdR2pR4MMeNYLeyAYYKLiJdP828y24kfY64YmZB/57puJRW5 hT2TX4gQoxuc2VDhEB9jK/G6NKUm8dtZHKuApQlvdQbxbL0XEuAYhjWwYDQqrhHG EZ6ukzanPUV0IbRkGUpx/rq2ISuEG4xwWdTWuTel49WUe6qlNrA20V7vKZ+oHT6D vyXQnEQbMRqOKuhbqe/DWZb0m0zqLO5uod2NXrOoY/BlA/CYDA82fqjMyKkxvmoD OGatytBGvNw/4vOUEXHimcZ91nd2v/8SFqa5hxHfpLnT9UOuI9e2+kAunhfG/vSe sAgPzS8eQmo/o4PlzOjoi/nyHEA== Received: from nasanppmta05.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3we97tgf89-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 22 Feb 2024 23:16:33 +0000 (GMT) Received: from nasanex01b.na.qualcomm.com (nasanex01b.na.qualcomm.com [10.46.141.250]) by NASANPPMTA05.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 41MNGW8W025534 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 22 Feb 2024 23:16:32 GMT Received: from hu-eberman-lv.qualcomm.com (10.49.16.6) by nasanex01b.na.qualcomm.com (10.46.141.250) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Thu, 22 Feb 2024 15:16:31 -0800 From: Elliot Berman Date: Thu, 22 Feb 2024 15:16:32 -0800 Subject: [PATCH v17 09/35] gunyah: rsc_mgr: Add VM lifecycle RPC Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <20240222-gunyah-v17-9-1e9da6763d38@quicinc.com> References: <20240222-gunyah-v17-0-1e9da6763d38@quicinc.com> In-Reply-To: <20240222-gunyah-v17-0-1e9da6763d38@quicinc.com> To: Alex Elder , Srinivas Kandagatla , Murali Nalajal , Trilok Soni , Srivatsa Vaddagiri , Carl van Schaik , Philip Derrin , Prakruthi Deepak Heragu , Jonathan Corbet , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Catalin Marinas , Will Deacon , Konrad Dybcio , Bjorn Andersson , Dmitry Baryshkov , "Fuad Tabba" , Sean Christopherson , "Andrew Morton" CC: , , , , , , Elliot Berman X-Mailer: b4 0.12.4 X-ClientProxiedBy: nalasex01c.na.qualcomm.com (10.47.97.35) To nasanex01b.na.qualcomm.com (10.46.141.250) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: hxYLiD4vprUOacEBPL7Ym-_TB4nrWIcz X-Proofpoint-ORIG-GUID: hxYLiD4vprUOacEBPL7Ym-_TB4nrWIcz X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-22_15,2024-02-22_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 spamscore=0 bulkscore=0 priorityscore=1501 malwarescore=0 adultscore=0 phishscore=0 lowpriorityscore=0 mlxscore=0 suspectscore=0 mlxlogscore=999 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2402120000 definitions=main-2402220179 Add Gunyah Resource Manager RPC interfaces to launch an unauthenticated virtual machine. Signed-off-by: Elliot Berman Reviewed-by: Srivatsa Vaddagiri --- drivers/virt/gunyah/Makefile | 2 +- drivers/virt/gunyah/rsc_mgr.h | 78 ++++++++++++ drivers/virt/gunyah/rsc_mgr_rpc.c | 248 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 327 insertions(+), 1 deletion(-) diff --git a/drivers/virt/gunyah/Makefile b/drivers/virt/gunyah/Makefile index ceccbbe68b380..47f1fae5419bf 100644 --- a/drivers/virt/gunyah/Makefile +++ b/drivers/virt/gunyah/Makefile @@ -1,5 +1,5 @@ # SPDX-License-Identifier: GPL-2.0 -gunyah_rsc_mgr-y += rsc_mgr.o vm_mgr.o +gunyah_rsc_mgr-y += rsc_mgr.o rsc_mgr_rpc.o vm_mgr.o obj-$(CONFIG_GUNYAH) += gunyah.o gunyah_rsc_mgr.o diff --git a/drivers/virt/gunyah/rsc_mgr.h b/drivers/virt/gunyah/rsc_mgr.h index 21318ef25040c..205b9ea735e53 100644 --- a/drivers/virt/gunyah/rsc_mgr.h +++ b/drivers/virt/gunyah/rsc_mgr.h @@ -20,6 +20,84 @@ int gunyah_rm_notifier_unregister(struct gunyah_rm *rm, struct device *gunyah_rm_get(struct gunyah_rm *rm); void gunyah_rm_put(struct gunyah_rm *rm); +struct gunyah_rm_vm_exited_payload { + __le16 vmid; + __le16 exit_type; + __le32 exit_reason_size; + u8 exit_reason[]; +} __packed; + +enum gunyah_rm_notification_id { + /* clang-format off */ + GUNYAH_RM_NOTIFICATION_VM_EXITED = 0x56100001, + GUNYAH_RM_NOTIFICATION_VM_STATUS = 0x56100008, + /* clang-format on */ +}; + +enum gunyah_rm_vm_status { + /* clang-format off */ + GUNYAH_RM_VM_STATUS_NO_STATE = 0, + GUNYAH_RM_VM_STATUS_INIT = 1, + GUNYAH_RM_VM_STATUS_READY = 2, + GUNYAH_RM_VM_STATUS_RUNNING = 3, + GUNYAH_RM_VM_STATUS_PAUSED = 4, + GUNYAH_RM_VM_STATUS_LOAD = 5, + GUNYAH_RM_VM_STATUS_AUTH = 6, + GUNYAH_RM_VM_STATUS_INIT_FAILED = 8, + GUNYAH_RM_VM_STATUS_EXITED = 9, + GUNYAH_RM_VM_STATUS_RESETTING = 10, + GUNYAH_RM_VM_STATUS_RESET = 11, + /* clang-format on */ +}; + +struct gunyah_rm_vm_status_payload { + __le16 vmid; + u16 reserved; + u8 vm_status; + u8 os_status; + __le16 app_status; +} __packed; + +int gunyah_rm_alloc_vmid(struct gunyah_rm *rm, u16 vmid); +int gunyah_rm_dealloc_vmid(struct gunyah_rm *rm, u16 vmid); +int gunyah_rm_vm_reset(struct gunyah_rm *rm, u16 vmid); +int gunyah_rm_vm_start(struct gunyah_rm *rm, u16 vmid); +int gunyah_rm_vm_stop(struct gunyah_rm *rm, u16 vmid); + +enum gunyah_rm_vm_auth_mechanism { + /* clang-format off */ + GUNYAH_RM_VM_AUTH_NONE = 0, + GUNYAH_RM_VM_AUTH_QCOM_PIL_ELF = 1, + GUNYAH_RM_VM_AUTH_QCOM_ANDROID_PVM = 2, + /* clang-format on */ +}; + +int gunyah_rm_vm_configure(struct gunyah_rm *rm, u16 vmid, + enum gunyah_rm_vm_auth_mechanism auth_mechanism, + u32 mem_handle, u64 image_offset, u64 image_size, + u64 dtb_offset, u64 dtb_size); +int gunyah_rm_vm_init(struct gunyah_rm *rm, u16 vmid); + +struct gunyah_rm_hyp_resource { + u8 type; + u8 reserved; + __le16 partner_vmid; + __le32 resource_handle; + __le32 resource_label; + __le64 cap_id; + __le32 virq_handle; + __le32 virq; + __le64 base; + __le64 size; +} __packed; + +struct gunyah_rm_hyp_resources { + __le32 n_entries; + struct gunyah_rm_hyp_resource entries[]; +} __packed; + +int gunyah_rm_get_hyp_resources(struct gunyah_rm *rm, u16 vmid, + struct gunyah_rm_hyp_resources **resources); int gunyah_rm_call(struct gunyah_rm *rsc_mgr, u32 message_id, const void *req_buf, size_t req_buf_size, void **resp_buf, diff --git a/drivers/virt/gunyah/rsc_mgr_rpc.c b/drivers/virt/gunyah/rsc_mgr_rpc.c new file mode 100644 index 0000000000000..c2f4ccae8f3bc --- /dev/null +++ b/drivers/virt/gunyah/rsc_mgr_rpc.c @@ -0,0 +1,248 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2022-2024 Qualcomm Innovation Center, Inc. All rights reserved. + */ + +#include + +#include "rsc_mgr.h" + +/* Message IDs: VM Management */ +/* clang-format off */ +#define GUNYAH_RM_RPC_VM_ALLOC_VMID 0x56000001 +#define GUNYAH_RM_RPC_VM_DEALLOC_VMID 0x56000002 +#define GUNYAH_RM_RPC_VM_START 0x56000004 +#define GUNYAH_RM_RPC_VM_STOP 0x56000005 +#define GUNYAH_RM_RPC_VM_RESET 0x56000006 +#define GUNYAH_RM_RPC_VM_CONFIG_IMAGE 0x56000009 +#define GUNYAH_RM_RPC_VM_INIT 0x5600000B +#define GUNYAH_RM_RPC_VM_GET_HYP_RESOURCES 0x56000020 +/* clang-format on */ + +struct gunyah_rm_vm_common_vmid_req { + __le16 vmid; + __le16 _padding; +} __packed; + +/* Call: VM_ALLOC */ +struct gunyah_rm_vm_alloc_vmid_resp { + __le16 vmid; + __le16 _padding; +} __packed; + +/* Call: VM_STOP */ +#define GUNYAH_RM_VM_STOP_FLAG_FORCE_STOP BIT(0) + +#define GUNYAH_RM_VM_STOP_REASON_FORCE_STOP 3 + +struct gunyah_rm_vm_stop_req { + __le16 vmid; + u8 flags; + u8 _padding; + __le32 stop_reason; +} __packed; + +/* Call: VM_CONFIG_IMAGE */ +struct gunyah_rm_vm_config_image_req { + __le16 vmid; + __le16 auth_mech; + __le32 mem_handle; + __le64 image_offset; + __le64 image_size; + __le64 dtb_offset; + __le64 dtb_size; +} __packed; + +/* + * Several RM calls take only a VMID as a parameter and give only standard + * response back. Deduplicate boilerplate code by using this common call. + */ +static int gunyah_rm_common_vmid_call(struct gunyah_rm *rm, u32 message_id, + u16 vmid) +{ + struct gunyah_rm_vm_common_vmid_req req_payload = { + .vmid = cpu_to_le16(vmid), + }; + + return gunyah_rm_call(rm, message_id, &req_payload, sizeof(req_payload), + NULL, NULL); +} + +/** + * gunyah_rm_alloc_vmid() - Allocate a new VM in Gunyah. Returns the VM identifier. + * @rm: Handle to a Gunyah resource manager + * @vmid: Use 0 to dynamically allocate a VM. A reserved VMID can be supplied + * to request allocation of a platform-defined VM. + * + * Return: the allocated VMID or negative value on error + */ +int gunyah_rm_alloc_vmid(struct gunyah_rm *rm, u16 vmid) +{ + struct gunyah_rm_vm_common_vmid_req req_payload = { + .vmid = cpu_to_le16(vmid), + }; + struct gunyah_rm_vm_alloc_vmid_resp *resp_payload; + size_t resp_size; + void *resp; + int ret; + + ret = gunyah_rm_call(rm, GUNYAH_RM_RPC_VM_ALLOC_VMID, &req_payload, + sizeof(req_payload), &resp, &resp_size); + if (ret) + return ret; + + if (!vmid) { + resp_payload = resp; + ret = le16_to_cpu(resp_payload->vmid); + kfree(resp); + } + + return ret; +} +ALLOW_ERROR_INJECTION(gunyah_rm_alloc_vmid, ERRNO); + +/** + * gunyah_rm_dealloc_vmid() - Dispose of a VMID + * @rm: Handle to a Gunyah resource manager + * @vmid: VM identifier allocated with gunyah_rm_alloc_vmid + */ +int gunyah_rm_dealloc_vmid(struct gunyah_rm *rm, u16 vmid) +{ + return gunyah_rm_common_vmid_call(rm, GUNYAH_RM_RPC_VM_DEALLOC_VMID, + vmid); +} +ALLOW_ERROR_INJECTION(gunyah_rm_dealloc_vmid, ERRNO); + +/** + * gunyah_rm_vm_reset() - Reset a VM's resources + * @rm: Handle to a Gunyah resource manager + * @vmid: VM identifier allocated with gunyah_rm_alloc_vmid + * + * As part of tearing down the VM, request RM to clean up all the VM resources + * associated with the VM. Only after this, Linux can clean up all the + * references it maintains to resources. + */ +int gunyah_rm_vm_reset(struct gunyah_rm *rm, u16 vmid) +{ + return gunyah_rm_common_vmid_call(rm, GUNYAH_RM_RPC_VM_RESET, vmid); +} +ALLOW_ERROR_INJECTION(gunyah_rm_vm_reset, ERRNO); + +/** + * gunyah_rm_vm_start() - Move a VM into "ready to run" state + * @rm: Handle to a Gunyah resource manager + * @vmid: VM identifier allocated with gunyah_rm_alloc_vmid + * + * On VMs which use proxy scheduling, vcpu_run is needed to actually run the VM. + * On VMs which use Gunyah's scheduling, the vCPUs start executing in accordance with Gunyah + * scheduling policies. + */ +int gunyah_rm_vm_start(struct gunyah_rm *rm, u16 vmid) +{ + return gunyah_rm_common_vmid_call(rm, GUNYAH_RM_RPC_VM_START, vmid); +} +ALLOW_ERROR_INJECTION(gunyah_rm_vm_start, ERRNO); + +/** + * gunyah_rm_vm_stop() - Send a request to Resource Manager VM to forcibly stop a VM. + * @rm: Handle to a Gunyah resource manager + * @vmid: VM identifier allocated with gunyah_rm_alloc_vmid + */ +int gunyah_rm_vm_stop(struct gunyah_rm *rm, u16 vmid) +{ + struct gunyah_rm_vm_stop_req req_payload = { + .vmid = cpu_to_le16(vmid), + .flags = GUNYAH_RM_VM_STOP_FLAG_FORCE_STOP, + .stop_reason = cpu_to_le32(GUNYAH_RM_VM_STOP_REASON_FORCE_STOP), + }; + + return gunyah_rm_call(rm, GUNYAH_RM_RPC_VM_STOP, &req_payload, + sizeof(req_payload), NULL, NULL); +} +ALLOW_ERROR_INJECTION(gunyah_rm_vm_stop, ERRNO); + +/** + * gunyah_rm_vm_configure() - Prepare a VM to start and provide the common + * configuration needed by RM to configure a VM + * @rm: Handle to a Gunyah resource manager + * @vmid: VM identifier allocated with gunyah_rm_alloc_vmid + * @auth_mechanism: Authentication mechanism used by resource manager to verify + * the virtual machine + * @mem_handle: Handle to a previously shared memparcel that contains all parts + * of the VM image subject to authentication. + * @image_offset: Start address of VM image, relative to the start of memparcel + * @image_size: Size of the VM image + * @dtb_offset: Start address of the devicetree binary with VM configuration, + * relative to start of memparcel. + * @dtb_size: Maximum size of devicetree binary. + */ +int gunyah_rm_vm_configure(struct gunyah_rm *rm, u16 vmid, + enum gunyah_rm_vm_auth_mechanism auth_mechanism, + u32 mem_handle, u64 image_offset, u64 image_size, + u64 dtb_offset, u64 dtb_size) +{ + struct gunyah_rm_vm_config_image_req req_payload = { + .vmid = cpu_to_le16(vmid), + .auth_mech = cpu_to_le16(auth_mechanism), + .mem_handle = cpu_to_le32(mem_handle), + .image_offset = cpu_to_le64(image_offset), + .image_size = cpu_to_le64(image_size), + .dtb_offset = cpu_to_le64(dtb_offset), + .dtb_size = cpu_to_le64(dtb_size), + }; + + return gunyah_rm_call(rm, GUNYAH_RM_RPC_VM_CONFIG_IMAGE, &req_payload, + sizeof(req_payload), NULL, NULL); +} +ALLOW_ERROR_INJECTION(gunyah_rm_vm_configure, ERRNO); + +/** + * gunyah_rm_vm_init() - Move the VM to initialized state. + * @rm: Handle to a Gunyah resource manager + * @vmid: VM identifier + * + * RM will allocate needed resources for the VM. + */ +int gunyah_rm_vm_init(struct gunyah_rm *rm, u16 vmid) +{ + return gunyah_rm_common_vmid_call(rm, GUNYAH_RM_RPC_VM_INIT, vmid); +} +ALLOW_ERROR_INJECTION(gunyah_rm_vm_init, ERRNO); + +/** + * gunyah_rm_get_hyp_resources() - Retrieve hypervisor resources (capabilities) associated with a VM + * @rm: Handle to a Gunyah resource manager + * @vmid: VMID of the other VM to get the resources of + * @resources: Set by gunyah_rm_get_hyp_resources and contains the returned hypervisor resources. + * Caller must free the resources pointer if successful. + */ +int gunyah_rm_get_hyp_resources(struct gunyah_rm *rm, u16 vmid, + struct gunyah_rm_hyp_resources **resources) +{ + struct gunyah_rm_vm_common_vmid_req req_payload = { + .vmid = cpu_to_le16(vmid), + }; + struct gunyah_rm_hyp_resources *resp; + size_t resp_size; + int ret; + + ret = gunyah_rm_call(rm, GUNYAH_RM_RPC_VM_GET_HYP_RESOURCES, + &req_payload, sizeof(req_payload), (void **)&resp, + &resp_size); + if (ret) + return ret; + + if (!resp_size) + return -EBADMSG; + + if (resp_size < struct_size(resp, entries, 0) || + resp_size != + struct_size(resp, entries, le32_to_cpu(resp->n_entries))) { + kfree(resp); + return -EBADMSG; + } + + *resources = resp; + return 0; +} +ALLOW_ERROR_INJECTION(gunyah_rm_get_hyp_resources, ERRNO);