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Thu, 22 Feb 2024 23:16:29 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 15:16:28 -0800 From: Elliot Berman Date: Thu, 22 Feb 2024 15:16:26 -0800 Subject: [PATCH v17 03/35] gunyah: Common types and error codes for Gunyah hypercalls MIME-Version: 1.0 Message-ID: <20240222-gunyah-v17-3-1e9da6763d38@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-Originating-IP: [10.49.16.6] 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-ORIG-GUID: nyPv04IQzCqrW0808AZtf8mr0XHoRsna X-Proofpoint-GUID: nyPv04IQzCqrW0808AZtf8mr0XHoRsna 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 mlxlogscore=482 malwarescore=0 impostorscore=0 bulkscore=0 adultscore=0 mlxscore=0 clxscore=1015 lowpriorityscore=0 spamscore=0 priorityscore=1501 phishscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2402120000 definitions=main-2402220179 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240222_151648_841523_8CACFCA9 X-CRM114-Status: GOOD ( 15.84 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add architecture-independent standard error codes, types, and macros for Gunyah hypercalls. Reviewed-by: Dmitry Baryshkov Reviewed-by: Srinivas Kandagatla Reviewed-by: Alex Elder Signed-off-by: Elliot Berman --- include/linux/gunyah.h | 106 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 106 insertions(+) diff --git a/include/linux/gunyah.h b/include/linux/gunyah.h new file mode 100644 index 0000000000000..1eab631a49b6d --- /dev/null +++ b/include/linux/gunyah.h @@ -0,0 +1,106 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (c) 2022-2024 Qualcomm Innovation Center, Inc. All rights reserved. + */ + +#ifndef _LINUX_GUNYAH_H +#define _LINUX_GUNYAH_H + +#include +#include +#include + +/* Matches resource manager's resource types for VM_GET_HYP_RESOURCES RPC */ +enum gunyah_resource_type { + /* clang-format off */ + GUNYAH_RESOURCE_TYPE_BELL_TX = 0, + GUNYAH_RESOURCE_TYPE_BELL_RX = 1, + GUNYAH_RESOURCE_TYPE_MSGQ_TX = 2, + GUNYAH_RESOURCE_TYPE_MSGQ_RX = 3, + GUNYAH_RESOURCE_TYPE_VCPU = 4, + GUNYAH_RESOURCE_TYPE_MEM_EXTENT = 9, + GUNYAH_RESOURCE_TYPE_ADDR_SPACE = 10, + /* clang-format on */ +}; + +struct gunyah_resource { + enum gunyah_resource_type type; + u64 capid; + unsigned int irq; +}; + +/******************************************************************************/ +/* Common arch-independent definitions for Gunyah hypercalls */ +#define GUNYAH_CAPID_INVAL U64_MAX +#define GUNYAH_VMID_ROOT_VM 0xff + +enum gunyah_error { + /* clang-format off */ + GUNYAH_ERROR_OK = 0, + GUNYAH_ERROR_UNIMPLEMENTED = -1, + GUNYAH_ERROR_RETRY = -2, + + GUNYAH_ERROR_ARG_INVAL = 1, + GUNYAH_ERROR_ARG_SIZE = 2, + GUNYAH_ERROR_ARG_ALIGN = 3, + + GUNYAH_ERROR_NOMEM = 10, + + GUNYAH_ERROR_ADDR_OVFL = 20, + GUNYAH_ERROR_ADDR_UNFL = 21, + GUNYAH_ERROR_ADDR_INVAL = 22, + + GUNYAH_ERROR_DENIED = 30, + GUNYAH_ERROR_BUSY = 31, + GUNYAH_ERROR_IDLE = 32, + + GUNYAH_ERROR_IRQ_BOUND = 40, + GUNYAH_ERROR_IRQ_UNBOUND = 41, + + GUNYAH_ERROR_CSPACE_CAP_NULL = 50, + GUNYAH_ERROR_CSPACE_CAP_REVOKED = 51, + GUNYAH_ERROR_CSPACE_WRONG_OBJ_TYPE = 52, + GUNYAH_ERROR_CSPACE_INSUF_RIGHTS = 53, + GUNYAH_ERROR_CSPACE_FULL = 54, + + GUNYAH_ERROR_MSGQUEUE_EMPTY = 60, + GUNYAH_ERROR_MSGQUEUE_FULL = 61, + /* clang-format on */ +}; + +/** + * gunyah_error_remap() - Remap Gunyah hypervisor errors into a Linux error code + * @gunyah_error: Gunyah hypercall return value + */ +static inline int gunyah_error_remap(enum gunyah_error gunyah_error) +{ + switch (gunyah_error) { + case GUNYAH_ERROR_OK: + return 0; + case GUNYAH_ERROR_NOMEM: + return -ENOMEM; + case GUNYAH_ERROR_DENIED: + case GUNYAH_ERROR_CSPACE_CAP_NULL: + case GUNYAH_ERROR_CSPACE_CAP_REVOKED: + case GUNYAH_ERROR_CSPACE_WRONG_OBJ_TYPE: + case GUNYAH_ERROR_CSPACE_INSUF_RIGHTS: + return -EACCES; + case GUNYAH_ERROR_CSPACE_FULL: + case GUNYAH_ERROR_BUSY: + case GUNYAH_ERROR_IDLE: + return -EBUSY; + case GUNYAH_ERROR_IRQ_BOUND: + case GUNYAH_ERROR_IRQ_UNBOUND: + case GUNYAH_ERROR_MSGQUEUE_FULL: + case GUNYAH_ERROR_MSGQUEUE_EMPTY: + return -EIO; + case GUNYAH_ERROR_UNIMPLEMENTED: + return -EOPNOTSUPP; + case GUNYAH_ERROR_RETRY: + return -EAGAIN; + default: + return -EINVAL; + } +} + +#endif