173 строки
5.3 KiB
C
173 строки
5.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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/*
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* Intel Speed Select Interface: OS to hardware Interface
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* Copyright (c) 2019, Intel Corporation.
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* All rights reserved.
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*
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* Author: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
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*/
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#ifndef __ISST_IF_H
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#define __ISST_IF_H
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#include <linux/types.h>
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/**
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* struct isst_if_platform_info - Define platform information
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* @api_version: Version of the firmware document, which this driver
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* can communicate
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* @driver_version: Driver version, which will help user to send right
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* commands. Even if the firmware is capable, driver may
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* not be ready
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* @max_cmds_per_ioctl: Returns the maximum number of commands driver will
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* accept in a single ioctl
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* @mbox_supported: Support of mail box interface
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* @mmio_supported: Support of mmio interface for core-power feature
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*
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* Used to return output of IOCTL ISST_IF_GET_PLATFORM_INFO. This
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* information can be used by the user space, to get the driver, firmware
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* support and also number of commands to send in a single IOCTL request.
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*/
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struct isst_if_platform_info {
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__u16 api_version;
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__u16 driver_version;
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__u16 max_cmds_per_ioctl;
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__u8 mbox_supported;
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__u8 mmio_supported;
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};
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/**
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* struct isst_if_cpu_map - CPU mapping between logical and physical CPU
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* @logical_cpu: Linux logical CPU number
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* @physical_cpu: PUNIT CPU number
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*
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* Used to convert from Linux logical CPU to PUNIT CPU numbering scheme.
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* The PUNIT CPU number is different than APIC ID based CPU numbering.
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*/
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struct isst_if_cpu_map {
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__u32 logical_cpu;
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__u32 physical_cpu;
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};
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/**
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* struct isst_if_cpu_maps - structure for CPU map IOCTL
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* @cmd_count: Number of CPU mapping command in cpu_map[]
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* @cpu_map[]: Holds one or more CPU map data structure
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*
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* This structure used with ioctl ISST_IF_GET_PHY_ID to send
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* one or more CPU mapping commands. Here IOCTL return value indicates
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* number of commands sent or error number if no commands have been sent.
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*/
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struct isst_if_cpu_maps {
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__u32 cmd_count;
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struct isst_if_cpu_map cpu_map[1];
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};
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/**
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* struct isst_if_io_reg - Read write PUNIT IO register
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* @read_write: Value 0: Read, 1: Write
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* @logical_cpu: Logical CPU number to get target PCI device.
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* @reg: PUNIT register offset
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* @value: For write operation value to write and for
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* for read placeholder read value
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*
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* Structure to specify read/write data to PUNIT registers.
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*/
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struct isst_if_io_reg {
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__u32 read_write; /* Read:0, Write:1 */
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__u32 logical_cpu;
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__u32 reg;
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__u32 value;
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};
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/**
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* struct isst_if_io_regs - structure for IO register commands
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* @cmd_count: Number of io reg commands in io_reg[]
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* @io_reg[]: Holds one or more io_reg command structure
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*
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* This structure used with ioctl ISST_IF_IO_CMD to send
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* one or more read/write commands to PUNIT. Here IOCTL return value
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* indicates number of requests sent or error number if no requests have
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* been sent.
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*/
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struct isst_if_io_regs {
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__u32 req_count;
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struct isst_if_io_reg io_reg[1];
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};
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/**
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* struct isst_if_mbox_cmd - Structure to define mail box command
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* @logical_cpu: Logical CPU number to get target PCI device
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* @parameter: Mailbox parameter value
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* @req_data: Request data for the mailbox
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* @resp_data: Response data for mailbox command response
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* @command: Mailbox command value
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* @sub_command: Mailbox sub command value
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* @reserved: Unused, set to 0
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*
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* Structure to specify mailbox command to be sent to PUNIT.
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*/
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struct isst_if_mbox_cmd {
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__u32 logical_cpu;
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__u32 parameter;
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__u32 req_data;
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__u32 resp_data;
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__u16 command;
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__u16 sub_command;
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__u32 reserved;
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};
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/**
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* struct isst_if_mbox_cmds - structure for mailbox commands
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* @cmd_count: Number of mailbox commands in mbox_cmd[]
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* @mbox_cmd[]: Holds one or more mbox commands
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*
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* This structure used with ioctl ISST_IF_MBOX_COMMAND to send
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* one or more mailbox commands to PUNIT. Here IOCTL return value
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* indicates number of commands sent or error number if no commands have
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* been sent.
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*/
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struct isst_if_mbox_cmds {
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__u32 cmd_count;
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struct isst_if_mbox_cmd mbox_cmd[1];
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};
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/**
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* struct isst_if_msr_cmd - Structure to define msr command
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* @read_write: Value 0: Read, 1: Write
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* @logical_cpu: Logical CPU number
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* @msr: MSR number
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* @data: For write operation, data to write, for read
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* place holder
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*
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* Structure to specify MSR command related to PUNIT.
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*/
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struct isst_if_msr_cmd {
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__u32 read_write; /* Read:0, Write:1 */
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__u32 logical_cpu;
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__u64 msr;
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__u64 data;
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};
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/**
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* struct isst_if_msr_cmds - structure for msr commands
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* @cmd_count: Number of mailbox commands in msr_cmd[]
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* @msr_cmd[]: Holds one or more msr commands
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*
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* This structure used with ioctl ISST_IF_MSR_COMMAND to send
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* one or more MSR commands. IOCTL return value indicates number of
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* commands sent or error number if no commands have been sent.
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*/
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struct isst_if_msr_cmds {
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__u32 cmd_count;
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struct isst_if_msr_cmd msr_cmd[1];
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};
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#define ISST_IF_MAGIC 0xFE
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#define ISST_IF_GET_PLATFORM_INFO _IOR(ISST_IF_MAGIC, 0, struct isst_if_platform_info *)
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#define ISST_IF_GET_PHY_ID _IOWR(ISST_IF_MAGIC, 1, struct isst_if_cpu_map *)
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#define ISST_IF_IO_CMD _IOW(ISST_IF_MAGIC, 2, struct isst_if_io_regs *)
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#define ISST_IF_MBOX_COMMAND _IOWR(ISST_IF_MAGIC, 3, struct isst_if_mbox_cmds *)
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#define ISST_IF_MSR_COMMAND _IOWR(ISST_IF_MAGIC, 4, struct isst_if_msr_cmds *)
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#endif
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