From: Elliot Berman <quic_eberman@quicinc.com>
To: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>,
Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Murali Nalajala <quic_mnalajal@quicinc.com>,
Trilok Soni <quic_tsoni@quicinc.com>,
Srivatsa Vaddagiri <quic_svaddagi@quicinc.com>,
Carl van Schaik <quic_cvanscha@quicinc.com>,
Andy Gross <agross@kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Sudeep Holla <sudeep.holla@arm.com>,
"Marc Zyngier" <maz@kernel.org>, Rob Herring <robh+dt@kernel.org>,
"Krzysztof Kozlowski" <krzysztof.kozlowski+dt@linaro.org>,
Jonathan Corbet <corbet@lwn.net>, Will Deacon <will@kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>,
<devicetree@vger.kernel.org>, <linux-doc@vger.kernel.org>,
<linux-arm-msm@vger.kernel.org>
Subject: Re: [PATCH v2 04/11] gunyah: Common types and error codes for Gunyah hypercalls
Date: Wed, 3 Aug 2022 14:16:06 -0700 [thread overview]
Message-ID: <848c50eb-92f1-2731-79bf-10a531803f8e@quicinc.com> (raw)
In-Reply-To: <24a2d70e-0ed1-5f7d-9c9c-261afac73989@linaro.org>
On 8/2/2022 12:33 AM, Dmitry Baryshkov wrote:
> On 02/08/2022 00:12, Elliot Berman wrote:
>> Add architecture-independent standard error codes, types, and macros for
>> Gunyah hypercalls.
>>
>> Signed-off-by: Elliot Berman <quic_eberman@quicinc.com>
>> ---
>> MAINTAINERS | 1 +
>> include/linux/gunyah.h | 75 ++++++++++++++++++++++++++++++++++++++++++
>> 2 files changed, 76 insertions(+)
>> create mode 100644 include/linux/gunyah.h
>>
>> diff --git a/MAINTAINERS b/MAINTAINERS
>> index 02f97ac90cdf..2e4f1d9ed47b 100644
>> --- a/MAINTAINERS
>> +++ b/MAINTAINERS
>> @@ -8744,6 +8744,7 @@ S: Maintained
>> F: Documentation/devicetree/bindings/firmware/gunyah-hypervisor.yaml
>> F: Documentation/virt/gunyah/
>> F: arch/arm64/include/asm/gunyah.h
>> +F: include/linux/gunyah.h
>> HABANALABS PCI DRIVER
>> M: Oded Gabbay <ogabbay@kernel.org>
>> diff --git a/include/linux/gunyah.h b/include/linux/gunyah.h
>> new file mode 100644
>> index 000000000000..69931a0f5736
>> --- /dev/null
>> +++ b/include/linux/gunyah.h
>> @@ -0,0 +1,75 @@
>> +/* SPDX-License-Identifier: GPL-2.0-only */
>> +/*
>> + * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights
>> reserved.
>> + */
>> +
>> +#ifndef _GUNYAH_H
>> +#define _GUNYAH_H
>> +
>> +#include <linux/types.h>
>> +#include <linux/errno.h>
>> +#include <asm/gunyah.h>
>> +
>> +typedef u64 gh_capid_t;
>> +
>> +/* Common Gunyah macros */
>> +#define GH_CAPID_INVAL U64_MAX
>> +
>> +#define GH_ERROR_OK 0
>
> Is there any semantic difference between GH_ERROR_foo < 0 and
> GH_ERROR_bar > 0 ?
>
GH_ERROR_foo < 0 comes from Gunyah's plumbing for handling hypercalls.
GH_ERROR_bar > 0 comes from the hypercall itself.
>> +#define GH_ERROR_UNIMPLEMENTED -1
>> +#define GH_ERROR_RETRY -2
>> +
>> +#define GH_ERROR_ARG_INVAL 1
>> +#define GH_ERROR_ARG_SIZE 2
>> +#define GH_ERROR_ARG_ALIGN 3
>> +
>> +#define GH_ERROR_NOMEM 10
>> +
>> +#define GH_ERROR_ADDR_OVFL 20
>> +#define GH_ERROR_ADDR_UNFL 21
>> +#define GH_ERROR_ADDR_INVAL 22
>> +
>> +#define GH_ERROR_DENIED 30
>> +#define GH_ERROR_BUSY 31
>> +#define GH_ERROR_IDLE 32
>> +
>> +#define GH_ERROR_IRQ_BOUND 40
>> +#define GH_ERROR_IRQ_UNBOUND 41
>> +
>> +#define GH_ERROR_CSPACE_CAP_NULL 50
>> +#define GH_ERROR_CSPACE_CAP_REVOKED 51
>> +#define GH_ERROR_CSPACE_WRONG_OBJ_TYPE 52
>> +#define GH_ERROR_CSPACE_INSUF_RIGHTS 53
>> +#define GH_ERROR_CSPACE_FULL 54
>> +
>> +#define GH_ERROR_MSGQUEUE_EMPTY 60
>> +#define GH_ERROR_MSGQUEUE_FULL 61
>> +
>> +static inline int gh_remap_error(int 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 -EPERM;
>> + default:
>> + return -EINVAL;
>> + }
>> +}
>> +
>> +#endif
>
>
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next prev parent reply other threads:[~2022-08-03 21:17 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-01 21:12 [PATCH v2 00/11] Drivers for gunyah hypervisor Elliot Berman
2022-08-01 21:12 ` [PATCH v2 01/11] docs: gunyah: Introduce Gunyah Hypervisor Elliot Berman
2022-08-01 21:29 ` Jeffrey Hugo
2022-08-05 3:18 ` Bagas Sanjaya
2022-08-05 15:48 ` Elliot Berman
2022-08-06 15:31 ` kernel test robot
2022-08-01 21:12 ` [PATCH v2 02/11] dt-bindings: Add binding for gunyah hypervisor Elliot Berman
2022-08-02 7:28 ` Dmitry Baryshkov
2022-08-02 10:54 ` Krzysztof Kozlowski
2022-08-01 21:12 ` [PATCH v2 03/11] arm64: gunyah: Add Gunyah hypercalls ABI Elliot Berman
2022-08-02 13:34 ` Dmitry Baryshkov
2022-08-03 21:15 ` Elliot Berman
2022-08-04 7:04 ` Dmitry Baryshkov
2022-08-01 21:12 ` [PATCH v2 04/11] gunyah: Common types and error codes for Gunyah hypercalls Elliot Berman
2022-08-02 7:33 ` Dmitry Baryshkov
2022-08-03 21:16 ` Elliot Berman [this message]
2022-08-02 7:51 ` Dmitry Baryshkov
2022-08-03 21:16 ` Elliot Berman
2022-08-01 21:12 ` [PATCH v2 05/11] virt: gunyah: Add sysfs nodes Elliot Berman
2022-08-02 7:42 ` Dmitry Baryshkov
2022-08-01 21:12 ` [PATCH v2 06/11] virt: gunyah: Add capabilities bus and devices Elliot Berman
2022-08-02 8:20 ` Dmitry Baryshkov
2022-08-01 21:12 ` [PATCH v2 07/11] gunyah: msgq: Add Gunyah message queues Elliot Berman
2022-08-02 8:14 ` Dmitry Baryshkov
2022-08-08 22:22 ` Elliot Berman
2022-08-09 11:29 ` Marc Zyngier
2022-08-09 16:50 ` Elliot Berman
2022-08-23 7:57 ` Dmitry Baryshkov
2022-08-01 21:12 ` [PATCH v2 08/11] gunyah: rsc_mgr: Add resource manager RPC core Elliot Berman
2022-08-01 21:12 ` [PATCH v2 09/11] gunyah: rsc_mgr: Add auxiliary devices for console Elliot Berman
2022-08-02 8:38 ` Dmitry Baryshkov
2022-08-03 21:19 ` Elliot Berman
2022-08-01 21:12 ` [PATCH v2 10/11] gunyah: rsc_mgr: Add RPC for console services Elliot Berman
2022-08-01 21:12 ` [PATCH v2 11/11] gunyah: Add tty console driver for RM Console Serivces Elliot Berman
2022-08-02 8:31 ` Dmitry Baryshkov
2022-08-03 21:15 ` Elliot Berman
2022-08-01 21:27 ` [PATCH v2 00/11] Drivers for gunyah hypervisor Jeffrey Hugo
2022-08-01 21:31 ` Elliot Berman
2022-08-02 9:24 ` Dmitry Baryshkov
2022-08-08 23:38 ` Elliot Berman
2022-08-09 13:13 ` Robin Murphy
2022-08-10 0:07 ` Elliot Berman
2022-08-10 4:12 ` Jassi Brar
2022-08-18 18:10 ` Elliot Berman
2022-08-23 8:01 ` Dmitry Baryshkov
2022-08-04 8:26 ` Bagas Sanjaya
2022-08-04 21:48 ` Elliot Berman
2022-08-05 2:15 ` Bagas Sanjaya
2022-08-05 7:45 ` Marc Zyngier
[not found] <20220223233729.1571114-1-quic_eberman@quicinc.com>
2022-07-14 21:29 ` [PATCH v2 00/11] Gunyah Hypervisor drivers Elliot Berman
2022-07-14 21:29 ` [PATCH v2 04/11] gunyah: Common types and error codes for Gunyah hypercalls Elliot Berman
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