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Message-ID: <20240222-gunyah-v17-3-1e9da6763d38@quicinc.com>
Date: Thu, 22 Feb 2024 15:16:26 -0800
From: Elliot Berman <quic_eberman@...cinc.com>
To: Alex Elder <elder@...aro.org>,
Srinivas Kandagatla
<srinivas.kandagatla@...aro.org>,
Murali Nalajal <quic_mnalajal@...cinc.com>,
Trilok Soni <quic_tsoni@...cinc.com>,
Srivatsa Vaddagiri
<quic_svaddagi@...cinc.com>,
Carl van Schaik <quic_cvanscha@...cinc.com>,
Philip Derrin <quic_pderrin@...cinc.com>,
Prakruthi Deepak Heragu
<quic_pheragu@...cinc.com>,
Jonathan Corbet <corbet@....net>, Rob Herring
<robh+dt@...nel.org>,
Krzysztof Kozlowski
<krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>,
Catalin Marinas <catalin.marinas@....com>,
Will Deacon <will@...nel.org>,
Konrad Dybcio <konrad.dybcio@...aro.org>,
Bjorn Andersson
<andersson@...nel.org>,
Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
"Fuad
Tabba" <tabba@...gle.com>,
Sean Christopherson <seanjc@...gle.com>,
"Andrew
Morton" <akpm@...ux-foundation.org>
CC: <linux-arm-msm@...r.kernel.org>, <linux-doc@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>, <linux-mm@...ck.org>,
Elliot Berman
<quic_eberman@...cinc.com>
Subject: [PATCH v17 03/35] 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 <dmitry.baryshkov@...aro.org>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Reviewed-by: Alex Elder <elder@...aro.org>
Signed-off-by: Elliot Berman <quic_eberman@...cinc.com>
---
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 <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/limits.h>
+
+/* 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
--
2.34.1
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