| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * Intel Speed Select Interface: Drivers Internal defines |
| * Copyright (c) 2019, Intel Corporation. |
| * All rights reserved. |
| * |
| * Author: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> |
| */ |
| |
| #ifndef __ISST_IF_COMMON_H |
| #define __ISST_IF_COMMON_H |
| |
| #define PCI_DEVICE_ID_INTEL_RAPL_PRIO_DEVID_0 0x3451 |
| #define PCI_DEVICE_ID_INTEL_CFG_MBOX_DEVID_0 0x3459 |
| |
| #define PCI_DEVICE_ID_INTEL_RAPL_PRIO_DEVID_1 0x3251 |
| #define PCI_DEVICE_ID_INTEL_CFG_MBOX_DEVID_1 0x3259 |
| |
| /* |
| * Validate maximum commands in a single request. |
| * This is enough to handle command to every core in one ioctl, or all |
| * possible message id to one CPU. Limit is also helpful for resonse time |
| * per IOCTL request, as PUNIT may take different times to process each |
| * request and may hold for long for too many commands. |
| */ |
| #define ISST_IF_CMD_LIMIT 64 |
| |
| #define ISST_IF_API_VERSION 0x01 |
| #define ISST_IF_DRIVER_VERSION 0x01 |
| |
| #define ISST_IF_DEV_MBOX 0 |
| #define ISST_IF_DEV_MMIO 1 |
| #define ISST_IF_DEV_MAX 2 |
| |
| /** |
| * struct isst_if_cmd_cb - Used to register a IOCTL handler |
| * @registered: Used by the common code to store registry. Caller don't |
| * to touch this field |
| * @cmd_size: The command size of the individual command in IOCTL |
| * @offset: Offset to the first valid member in command structure. |
| * This will be the offset of the start of the command |
| * after command count field |
| * @cmd_callback: Callback function to handle IOCTL. The callback has the |
| * command pointer with data for command. There is a pointer |
| * called write_only, which when set, will not copy the |
| * response to user ioctl buffer. The "resume" argument |
| * can be used to avoid storing the command for replay |
| * during system resume |
| * |
| * This structure is used to register an handler for IOCTL. To avoid |
| * code duplication common code handles all the IOCTL command read/write |
| * including handling multiple command in single IOCTL. The caller just |
| * need to execute a command via the registered callback. |
| */ |
| struct isst_if_cmd_cb { |
| int registered; |
| int cmd_size; |
| int offset; |
| struct module *owner; |
| long (*cmd_callback)(u8 *ptr, int *write_only, int resume); |
| }; |
| |
| /* Internal interface functions */ |
| int isst_if_cdev_register(int type, struct isst_if_cmd_cb *cb); |
| void isst_if_cdev_unregister(int type); |
| struct pci_dev *isst_if_get_pci_dev(int cpu, int bus, int dev, int fn); |
| bool isst_if_mbox_cmd_set_req(struct isst_if_mbox_cmd *mbox_cmd); |
| bool isst_if_mbox_cmd_invalid(struct isst_if_mbox_cmd *cmd); |
| int isst_store_cmd(int cmd, int sub_command, u32 cpu, int mbox_cmd, |
| u32 param, u64 data); |
| void isst_resume_common(void); |
| #endif |