powerpc/powernv: Add opal-prd channel (0d7cd855) · Commits · 戴 / test

arch/powerpc/include/asm/opal-api.h

+20 −1

Original line number	Diff line number	Diff line
		@@ -153,7 +153,8 @@
		#define OPAL_FLASH_READ 110
		#define OPAL_FLASH_WRITE 111
		#define OPAL_FLASH_ERASE 112
		#define OPAL_LAST 112
		#define OPAL_PRD_MSG 113
		#define OPAL_LAST 113

		/* Device tree flags */

		@@ -359,6 +360,7 @@ enum opal_msg_type {
		OPAL_MSG_SHUTDOWN, /* params[0] = 1 reboot, 0 shutdown */
		OPAL_MSG_HMI_EVT,
		OPAL_MSG_DPO,
		OPAL_MSG_PRD,
		OPAL_MSG_TYPE_MAX,
		};

		@@ -681,6 +683,23 @@ typedef struct oppanel_line {
		__be64 line_len;
		} oppanel_line_t;

		enum opal_prd_msg_type {
		OPAL_PRD_MSG_TYPE_INIT = 0, /* HBRT --> OPAL */
		OPAL_PRD_MSG_TYPE_FINI, /* HBRT/kernel --> OPAL */
		OPAL_PRD_MSG_TYPE_ATTN, /* HBRT <-- OPAL */
		OPAL_PRD_MSG_TYPE_ATTN_ACK, /* HBRT --> OPAL */
		OPAL_PRD_MSG_TYPE_OCC_ERROR, /* HBRT <-- OPAL */
		OPAL_PRD_MSG_TYPE_OCC_RESET, /* HBRT <-- OPAL */
		};

		struct opal_prd_msg_header {
		uint8_t type;
		uint8_t pad[1];
		__be16 size;
		};

		struct opal_prd_msg;

		/*
		* SG entries
		*

arch/powerpc/include/asm/opal.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -194,6 +194,7 @@ int64_t opal_ipmi_recv(uint64_t interface, struct opal_ipmi_msg *msg,
		uint64_t *msg_len);
		int64_t opal_i2c_request(uint64_t async_token, uint32_t bus_id,
		struct opal_i2c_request *oreq);
		int64_t opal_prd_msg(struct opal_prd_msg *msg);

		int64_t opal_flash_read(uint64_t id, uint64_t offset, uint64_t buf,
		uint64_t size, uint64_t token);

arch/powerpc/include/uapi/asm/opal-prd.h

0 → 100644

+58 −0

Original line number	Diff line number	Diff line
		/*
		* OPAL Runtime Diagnostics interface driver
		* Supported on POWERNV platform
		*
		* (C) Copyright IBM 2015
		*
		* Author: Vaidyanathan Srinivasan <svaidy at linux.vnet.ibm.com>
		* Author: Jeremy Kerr <jk@ozlabs.org>
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License as published by
		* the Free Software Foundation; either version 2, or (at your option)
		* any later version.
		*
		* This program is distributed in the hope that it will be useful,
		* but WITHOUT ANY WARRANTY; without even the implied warranty of
		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		* GNU General Public License for more details.
		*/

		#ifndef _UAPI_ASM_POWERPC_OPAL_PRD_H_
		#define _UAPI_ASM_POWERPC_OPAL_PRD_H_

		#include <linux/types.h>

		/**
		* The version of the kernel interface of the PRD system. This describes the
		* interface available for the /dev/opal-prd device. The actual PRD message
		* layout and content is private to the firmware <--> userspace interface, so
		* is not covered by this versioning.
		*
		* Future interface versions are backwards-compatible; if a later kernel
		* version is encountered, functionality provided in earlier versions
		* will work.
		*/
		#define OPAL_PRD_KERNEL_VERSION 1

		#define OPAL_PRD_GET_INFO _IOR('o', 0x01, struct opal_prd_info)
		#define OPAL_PRD_SCOM_READ _IOR('o', 0x02, struct opal_prd_scom)
		#define OPAL_PRD_SCOM_WRITE _IOW('o', 0x03, struct opal_prd_scom)

		#ifndef __ASSEMBLY__

		struct opal_prd_info {
		__u64 version;
		__u64 reserved[3];
		};

		struct opal_prd_scom {
		__u64 chip;
		__u64 addr;
		__u64 data;
		__s64 rc;
		};

		#endif /* __ASSEMBLY__ */

		#endif /* _UAPI_ASM_POWERPC_OPAL_PRD_H */

arch/powerpc/platforms/powernv/Kconfig

+7 −0

Original line number	Diff line number	Diff line
		@@ -19,3 +19,10 @@ config PPC_POWERNV
		select CPU_FREQ_GOV_CONSERVATIVE
		select PPC_DOORBELL
		default y

		config OPAL_PRD
		tristate 'OPAL PRD driver'
		depends on PPC_POWERNV
		help
		This enables the opal-prd driver, a facility to run processor
		recovery diagnostics on OpenPower machines

arch/powerpc/platforms/powernv/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -9,3 +9,4 @@ obj-$(CONFIG_EEH) += eeh-powernv.o
		obj-$(CONFIG_PPC_SCOM) += opal-xscom.o
		obj-$(CONFIG_MEMORY_FAILURE) += opal-memory-errors.o
		obj-$(CONFIG_TRACEPOINTS) += opal-tracepoints.o
		obj-$(CONFIG_OPAL_PRD) += opal-prd.o

Admin message