From 256b469b5711e2cb72c2a78252ea80b5bc86d351 Mon Sep 17 00:00:00 2001 From: Elliot Berman Date: Wed, 10 Aug 2022 21:53:52 -0700 Subject: [PATCH] FROMLIST: gunyah: Common types and error codes for Gunyah hypercalls Add architecture-independent standard error codes, types, and macros for Gunyah hypercalls. Reviewed-by: Dmitry Baryshkov Change-Id: Ib4a98bf881639d0b7e11a9e667beaf54456eecc7 Signed-off-by: Elliot Berman Bug: 268234781 Link: https://lore.kernel.org/all/20230304010632.2127470-4-quic_eberman@quicinc.com/ --- include/linux/gunyah.h | 83 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 83 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..54b4be71caf7 --- /dev/null +++ b/include/linux/gunyah.h @@ -0,0 +1,83 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (c) 2022-2023 Qualcomm Innovation Center, Inc. All rights reserved. + */ + +#ifndef _LINUX_GUNYAH_H +#define _LINUX_GUNYAH_H + +#include +#include + +/******************************************************************************/ +/* Common arch-independent definitions for Gunyah hypercalls */ +#define GH_CAPID_INVAL U64_MAX +#define GH_VMID_ROOT_VM 0xff + +enum gh_error { + GH_ERROR_OK = 0, + GH_ERROR_UNIMPLEMENTED = -1, + GH_ERROR_RETRY = -2, + + GH_ERROR_ARG_INVAL = 1, + GH_ERROR_ARG_SIZE = 2, + GH_ERROR_ARG_ALIGN = 3, + + GH_ERROR_NOMEM = 10, + + GH_ERROR_ADDR_OVFL = 20, + GH_ERROR_ADDR_UNFL = 21, + GH_ERROR_ADDR_INVAL = 22, + + GH_ERROR_DENIED = 30, + GH_ERROR_BUSY = 31, + GH_ERROR_IDLE = 32, + + GH_ERROR_IRQ_BOUND = 40, + GH_ERROR_IRQ_UNBOUND = 41, + + GH_ERROR_CSPACE_CAP_NULL = 50, + GH_ERROR_CSPACE_CAP_REVOKED = 51, + GH_ERROR_CSPACE_WRONG_OBJ_TYPE = 52, + GH_ERROR_CSPACE_INSUF_RIGHTS = 53, + GH_ERROR_CSPACE_FULL = 54, + + GH_ERROR_MSGQUEUE_EMPTY = 60, + GH_ERROR_MSGQUEUE_FULL = 61, +}; + +/** + * gh_remap_error() - Remap Gunyah hypervisor errors into a Linux error code + * @gh_error: Gunyah hypercall return value + */ +static inline int gh_remap_error(enum gh_error gh_error) +{ + switch (gh_error) { + case GH_ERROR_OK: + return 0; + case GH_ERROR_NOMEM: + return -ENOMEM; + case GH_ERROR_DENIED: + case GH_ERROR_CSPACE_CAP_NULL: + case GH_ERROR_CSPACE_CAP_REVOKED: + case GH_ERROR_CSPACE_WRONG_OBJ_TYPE: + case GH_ERROR_CSPACE_INSUF_RIGHTS: + case GH_ERROR_CSPACE_FULL: + return -EACCES; + case GH_ERROR_BUSY: + case GH_ERROR_IDLE: + return -EBUSY; + case GH_ERROR_IRQ_BOUND: + case GH_ERROR_IRQ_UNBOUND: + case GH_ERROR_MSGQUEUE_FULL: + case GH_ERROR_MSGQUEUE_EMPTY: + return -EIO; + case GH_ERROR_UNIMPLEMENTED: + case GH_ERROR_RETRY: + return -EOPNOTSUPP; + default: + return -EINVAL; + } +} + +#endif