From: Simon Horman <horms@kernel•org>
To: Choong Yong Liang <yong.liang.choong@linux•intel.com>
Cc: "Rajneesh Bhardwaj" <irenic.rajneesh@gmail•com>,
"David E Box" <david.e.box@linux•intel.com>,
"Hans de Goede" <hdegoede@redhat•com>,
"Mark Gross" <markgross@kernel•org>,
"Jose Abreu" <Jose.Abreu@synopsys•com>,
"Andrew Lunn" <andrew@lunn•ch>,
"Heiner Kallweit" <hkallweit1@gmail•com>,
"Russell King" <linux@armlinux•org.uk>,
"David S . Miller" <davem@davemloft•net>,
"Eric Dumazet" <edumazet@google•com>,
"Jakub Kicinski" <kuba@kernel•org>,
"Paolo Abeni" <pabeni@redhat•com>,
"Marek Behún" <kabel@kernel•org>,
"Jean Delvare" <jdelvare@suse•com>,
"Guenter Roeck" <linux@roeck-us•net>,
"Giuseppe Cavallaro" <peppe.cavallaro@st•com>,
"Alexandre Torgue" <alexandre.torgue@foss•st.com>,
"Jose Abreu" <joabreu@synopsys•com>,
"Maxime Coquelin" <mcoquelin.stm32@gmail•com>,
"Richard Cochran" <richardcochran@gmail•com>,
"Philipp Zabel" <p.zabel@pengutronix•de>,
"Alexei Starovoitov" <ast@kernel•org>,
"Daniel Borkmann" <daniel@iogearbox•net>,
"Jesper Dangaard Brouer" <hawk@kernel•org>,
"John Fastabend" <john.fastabend@gmail•com>,
"Wong Vee Khee" <veekhee@apple•com>,
"Jon Hunter" <jonathanh@nvidia•com>,
"Jesse Brandeburg" <jesse.brandeburg@intel•com>,
"Revanth Kumar Uppala" <ruppala@nvidia•com>,
"Shenwei Wang" <shenwei.wang@nxp•com>,
"Andrey Konovalov" <andrey.konovalov@linaro•org>,
"Jochen Henneberg" <jh@henneberg-systemdesign•com>,
"David E Box" <david.e.box@intel•com>,
"Andrew Halaney" <ahalaney@redhat•com>,
"Bartosz Golaszewski" <bartosz.golaszewski@linaro•org>,
netdev@vger•kernel.org, linux-kernel@vger•kernel.org,
linux-stm32@st-md-mailman•stormreply.com,
linux-arm-kernel@lists•infradead.org,
platform-driver-x86@vger•kernel.org, linux-hwmon@vger•kernel.org,
bpf@vger•kernel.org, "Voon Wei Feng" <weifeng.voon@intel•com>,
"Tan Tee Min" <tee.min.tan@linux•intel.com>,
"Michael Sit Wei Hong" <michael.wei.hong.sit@intel•com>,
"Lai Peter Jun Ann" <jun.ann.lai@intel•com>
Subject: Re: [PATCH net-next v3 1/5] arch: x86: Add IPC mailbox accessor function and add SoC register access
Date: Fri, 22 Sep 2023 10:45:52 +0100 [thread overview]
Message-ID: <20230922094552.GY224399@kernel.org> (raw)
In-Reply-To: <20230921121946.3025771-2-yong.liang.choong@linux.intel.com>
On Thu, Sep 21, 2023 at 08:19:42PM +0800, Choong Yong Liang wrote:
> From: "David E. Box" <david.e.box@linux•intel.com>
>
> - Exports intel_pmc_ipc() for host access to the PMC IPC mailbox
> - Add support to use IPC command allows host to access SoC registers
> through PMC firmware that are otherwise inaccessible to the host due to
> security policies.
>
> Signed-off-by: David E. Box <david.e.box@linux•intel.com>
> Signed-off-by: Chao Qin <chao.qin@intel•com>
> Signed-off-by: Choong Yong Liang <yong.liang.choong@linux•intel.com>
...
> diff --git a/include/linux/platform_data/x86/intel_pmc_ipc.h b/include/linux/platform_data/x86/intel_pmc_ipc.h
> new file mode 100644
> index 000000000000..25ba57b8a7ea
> --- /dev/null
> +++ b/include/linux/platform_data/x86/intel_pmc_ipc.h
> @@ -0,0 +1,34 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Intel Core SoC Power Management Controller Header File
> + *
> + * Copyright (c) 2023, Intel Corporation.
> + * All Rights Reserved.
> + *
> + * Authors: Choong Yong Liang <yong.liang.choong@linux•intel.com>
> + * David E. Box <david.e.box@linux•intel.com>
> + */
> +#ifndef INTEL_PMC_IPC_H
> +#define INTEL_PMC_IPC_H
> +
> +#define IPC_SOC_REGISTER_ACCESS 0xAA
> +#define IPC_SOC_SUB_CMD_READ 0x00
> +#define IPC_SOC_SUB_CMD_WRITE 0x01
> +
> +struct pmc_ipc_cmd {
> + u32 cmd;
> + u32 sub_cmd;
> + u32 size;
> + u32 wbuf[4];
> +};
> +
> +/**
> + * intel_pmc_core_ipc() - PMC IPC Mailbox accessor
nit: intel_pmc_ipc()
> + * @ipc_cmd: struct pmc_ipc_cmd prepared with input to send
> + * @rbuf: Allocated u32[4] array for returned IPC data
> + *
> + * Return: 0 on success. Non-zero on mailbox error
> + */
> +int intel_pmc_ipc(struct pmc_ipc_cmd *ipc_cmd, u32 *rbuf);
> +
> +#endif /* INTEL_PMC_IPC_H */
> --
> 2.25.1
>
>
next prev parent reply other threads:[~2023-09-22 9:46 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-21 12:19 [PATCH net-next v3 0/5] TSN auto negotiation between 1G and 2.5G Choong Yong Liang
2023-09-21 12:19 ` [PATCH net-next v3 1/5] arch: x86: Add IPC mailbox accessor function and add SoC register access Choong Yong Liang
2023-09-22 9:45 ` Simon Horman [this message]
2023-09-21 12:19 ` [PATCH net-next v3 2/5] net: pcs: xpcs: combine C37 SGMII AN and 2500BASEX for Intel mGbE controller Choong Yong Liang
2023-09-21 13:06 ` Russell King (Oracle)
2023-09-26 10:51 ` Serge Semin
2024-01-29 13:15 ` Choong Yong Liang
2023-09-21 12:19 ` [PATCH net-next v3 3/5] net: phy: update in-band AN mode when changing interface by PHY driver Choong Yong Liang
2023-09-21 14:04 ` Russell King (Oracle)
2024-01-29 13:18 ` Choong Yong Liang
2023-09-21 12:19 ` [PATCH net-next v3 4/5] net: stmmac: enable Intel mGbE 1G/2.5G auto-negotiation support Choong Yong Liang
2023-09-21 13:28 ` Russell King (Oracle)
2023-09-26 10:55 ` Serge Semin
2024-01-29 13:19 ` Choong Yong Liang
2024-01-29 13:41 ` Andrew Lunn
2024-02-02 3:07 ` Choong Yong Liang
2023-09-21 12:19 ` [PATCH net-next v3 5/5] stmmac: intel: Add 1G/2.5G auto-negotiation support for ADL-N Choong Yong Liang
2023-09-21 13:14 ` [PATCH net-next v3 0/5] TSN auto negotiation between 1G and 2.5G Andrew Lunn
2023-09-21 14:09 ` Russell King (Oracle)
2024-01-29 13:13 ` Choong Yong Liang
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