/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Intel Speed Select Interface: Drivers Internal defines
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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_COMMON_H
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#define __ISST_IF_COMMON_H
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#define INTEL_RAPL_PRIO_DEVID_0 0x3451
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#define INTEL_CFG_MBOX_DEVID_0 0x3459
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#define INTEL_RAPL_PRIO_DEVID_1 0x3251
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#define INTEL_CFG_MBOX_DEVID_1 0x3259
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/*
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* Validate maximum commands in a single request.
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* This is enough to handle command to every core in one ioctl, or all
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* possible message id to one CPU. Limit is also helpful for resonse time
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* per IOCTL request, as PUNIT may take different times to process each
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* request and may hold for long for too many commands.
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*/
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#define ISST_IF_CMD_LIMIT 64
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#define ISST_IF_API_VERSION 0x01
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#define ISST_IF_DRIVER_VERSION 0x01
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#define ISST_IF_DEV_MBOX 0
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#define ISST_IF_DEV_MMIO 1
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#define ISST_IF_DEV_MAX 2
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/**
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* struct isst_if_cmd_cb - Used to register a IOCTL handler
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* @registered: Used by the common code to store registry. Caller don't
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* to touch this field
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* @cmd_size: The command size of the individual command in IOCTL
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* @offset: Offset to the first valid member in command structure.
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* This will be the offset of the start of the command
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* after command count field
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* @cmd_callback: Callback function to handle IOCTL. The callback has the
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* command pointer with data for command. There is a pointer
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* called write_only, which when set, will not copy the
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* response to user ioctl buffer. The "resume" argument
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* can be used to avoid storing the command for replay
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* during system resume
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*
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* This structure is used to register an handler for IOCTL. To avoid
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* code duplication common code handles all the IOCTL command read/write
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* including handling multiple command in single IOCTL. The caller just
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* need to execute a command via the registered callback.
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*/
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struct isst_if_cmd_cb {
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int registered;
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int cmd_size;
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int offset;
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struct module *owner;
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long (*cmd_callback)(u8 *ptr, int *write_only, int resume);
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};
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/* Internal interface functions */
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int isst_if_cdev_register(int type, struct isst_if_cmd_cb *cb);
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void isst_if_cdev_unregister(int type);
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struct pci_dev *isst_if_get_pci_dev(int cpu, int bus, int dev, int fn);
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bool isst_if_mbox_cmd_set_req(struct isst_if_mbox_cmd *mbox_cmd);
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bool isst_if_mbox_cmd_invalid(struct isst_if_mbox_cmd *cmd);
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int isst_store_cmd(int cmd, int sub_command, u32 cpu, int mbox_cmd,
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u32 param, u64 data);
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void isst_resume_common(void);
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#endif
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