1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Intel Speed Select Interface: Drivers Internal defines
4 * Copyright (c) 2019, Intel Corporation.
10 #ifndef __ISST_IF_COMMON_H
11 #define __ISST_IF_COMMON_H
13 #define PCI_DEVICE_ID_INTEL_RAPL_PRIO_DEVID_0 0x3451
14 #define PCI_DEVICE_ID_INTEL_CFG_MBOX_DEVID_0 0x3459
16 #define PCI_DEVICE_ID_INTEL_RAPL_PRIO_DEVID_1 0x3251
17 #define PCI_DEVICE_ID_INTEL_CFG_MBOX_DEVID_1 0x3259
20 * Validate maximum commands in a single request.
21 * This is enough to handle command to every core in one ioctl, or all
22 * possible message id to one CPU. Limit is also helpful for resonse time
23 * per IOCTL request, as PUNIT may take different times to process each
24 * request and may hold for long for too many commands.
26 #define ISST_IF_CMD_LIMIT 64
28 #define ISST_IF_API_VERSION 0x01
29 #define ISST_IF_DRIVER_VERSION 0x01
31 #define ISST_IF_DEV_MBOX 0
32 #define ISST_IF_DEV_MMIO 1
33 #define ISST_IF_DEV_MAX 2
36 * struct isst_if_cmd_cb - Used to register a IOCTL handler
37 * @registered: Used by the common code to store registry. Caller don't
39 * @cmd_size: The command size of the individual command in IOCTL
40 * @offset: Offset to the first valid member in command structure.
41 * This will be the offset of the start of the command
42 * after command count field
43 * @cmd_callback: Callback function to handle IOCTL. The callback has the
44 * command pointer with data for command. There is a pointer
45 * called write_only, which when set, will not copy the
46 * response to user ioctl buffer. The "resume" argument
47 * can be used to avoid storing the command for replay
48 * during system resume
50 * This structure is used to register an handler for IOCTL. To avoid
51 * code duplication common code handles all the IOCTL command read/write
52 * including handling multiple command in single IOCTL. The caller just
53 * need to execute a command via the registered callback.
55 struct isst_if_cmd_cb {
60 long (*cmd_callback)(u8 *ptr, int *write_only, int resume);
63 /* Internal interface functions */
64 int isst_if_cdev_register(int type, struct isst_if_cmd_cb *cb);
65 void isst_if_cdev_unregister(int type);
66 struct pci_dev *isst_if_get_pci_dev(int cpu, int bus, int dev, int fn);
67 bool isst_if_mbox_cmd_set_req(struct isst_if_mbox_cmd *mbox_cmd);
68 bool isst_if_mbox_cmd_invalid(struct isst_if_mbox_cmd *cmd);
69 int isst_store_cmd(int cmd, int sub_command, u32 cpu, int mbox_cmd,
71 void isst_resume_common(void);