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[129.215.164.122]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3a06d4a8150sm2199951f8f.7.2025.04.24.07.13.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 24 Apr 2025 07:13:57 -0700 (PDT) From: Karim Manaouil To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev Cc: Karim Manaouil , Alexander Graf , Alex Elder , Catalin Marinas , Fuad Tabba , Joey Gouly , Jonathan Corbet , Marc Zyngier , Mark Brown , Mark Rutland , Oliver Upton , Paolo Bonzini , Prakruthi Deepak Heragu , Quentin Perret , Rob Herring , Srinivas Kandagatla , Srivatsa Vaddagiri , Will Deacon , Haripranesh S , Carl van Schaik , Murali Nalajala , Sreenivasulu Chalamcharla , Trilok Soni , Stefan Schmidt , Elliot Berman , Dmitry Baryshkov , Srinivas Kandagatla , Alex Elder Subject: [RFC PATCH 10/34] gunyah: Common types and error codes for Gunyah hypercalls Date: Thu, 24 Apr 2025 15:13:17 +0100 Message-Id: <20250424141341.841734-11-karim.manaouil@linaro.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250424141341.841734-1-karim.manaouil@linaro.org> References: <20250424141341.841734-1-karim.manaouil@linaro.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Elliot Berman 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 Signed-off-by: Karim Manaouil --- include/linux/gunyah.h | 106 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 106 insertions(+) create mode 100644 include/linux/gunyah.h diff --git a/include/linux/gunyah.h b/include/linux/gunyah.h new file mode 100644 index 000000000000..1eab631a49b6 --- /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 res= erved. + */ + +#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 =3D 0, + GUNYAH_RESOURCE_TYPE_BELL_RX =3D 1, + GUNYAH_RESOURCE_TYPE_MSGQ_TX =3D 2, + GUNYAH_RESOURCE_TYPE_MSGQ_RX =3D 3, + GUNYAH_RESOURCE_TYPE_VCPU =3D 4, + GUNYAH_RESOURCE_TYPE_MEM_EXTENT =3D 9, + GUNYAH_RESOURCE_TYPE_ADDR_SPACE =3D 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 =3D 0, + GUNYAH_ERROR_UNIMPLEMENTED =3D -1, + GUNYAH_ERROR_RETRY =3D -2, + + GUNYAH_ERROR_ARG_INVAL =3D 1, + GUNYAH_ERROR_ARG_SIZE =3D 2, + GUNYAH_ERROR_ARG_ALIGN =3D 3, + + GUNYAH_ERROR_NOMEM =3D 10, + + GUNYAH_ERROR_ADDR_OVFL =3D 20, + GUNYAH_ERROR_ADDR_UNFL =3D 21, + GUNYAH_ERROR_ADDR_INVAL =3D 22, + + GUNYAH_ERROR_DENIED =3D 30, + GUNYAH_ERROR_BUSY =3D 31, + GUNYAH_ERROR_IDLE =3D 32, + + GUNYAH_ERROR_IRQ_BOUND =3D 40, + GUNYAH_ERROR_IRQ_UNBOUND =3D 41, + + GUNYAH_ERROR_CSPACE_CAP_NULL =3D 50, + GUNYAH_ERROR_CSPACE_CAP_REVOKED =3D 51, + GUNYAH_ERROR_CSPACE_WRONG_OBJ_TYPE =3D 52, + GUNYAH_ERROR_CSPACE_INSUF_RIGHTS =3D 53, + GUNYAH_ERROR_CSPACE_FULL =3D 54, + + GUNYAH_ERROR_MSGQUEUE_EMPTY =3D 60, + GUNYAH_ERROR_MSGQUEUE_FULL =3D 61, + /* clang-format on */ +}; + +/** + * gunyah_error_remap() - Remap Gunyah hypervisor errors into a Linux erro= r 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 --=20 2.39.5