1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * AMD HSMP Platform Driver 4 * Copyright (c) 2024, AMD. 5 * All Rights Reserved. 6 * 7 * Header file for HSMP driver 8 */ 9 10 #ifndef HSMP_H 11 #define HSMP_H 12 13 #include <linux/compiler_types.h> 14 #include <linux/device.h> 15 #include <linux/miscdevice.h> 16 #include <linux/pci.h> 17 #include <linux/semaphore.h> 18 #include <linux/sysfs.h> 19 20 #define HSMP_METRICS_TABLE_NAME "metrics_bin" 21 22 #define HSMP_ATTR_GRP_NAME_SIZE 10 23 24 #define HSMP_CDEV_NAME "hsmp_cdev" 25 #define HSMP_DEVNODE_NAME "hsmp" 26 27 struct hsmp_mbaddr_info { 28 u32 base_addr; 29 u32 msg_id_off; 30 u32 msg_resp_off; 31 u32 msg_arg_off; 32 u32 size; 33 }; 34 35 struct hsmp_socket { 36 struct bin_attribute hsmp_attr; 37 struct hsmp_mbaddr_info mbinfo; 38 void __iomem *metric_tbl_addr; 39 void __iomem *virt_base_addr; 40 struct semaphore hsmp_sem; 41 char name[HSMP_ATTR_GRP_NAME_SIZE]; 42 struct device *dev; 43 u16 sock_ind; 44 int (*amd_hsmp_rdwr)(struct hsmp_socket *sock, u32 off, u32 *val, bool rw); 45 }; 46 47 struct hsmp_plat_device { 48 struct miscdevice mdev; 49 struct hsmp_socket *sock; 50 u32 proto_ver; 51 u16 num_sockets; 52 bool is_probed; 53 }; 54 55 int hsmp_cache_proto_ver(u16 sock_ind); 56 int hsmp_test(u16 sock_ind, u32 value); 57 long hsmp_ioctl(struct file *fp, unsigned int cmd, unsigned long arg); 58 void hsmp_misc_deregister(void); 59 int hsmp_misc_register(struct device *dev); 60 int hsmp_get_tbl_dram_base(u16 sock_ind); 61 ssize_t hsmp_metric_tbl_read(struct hsmp_socket *sock, char *buf, size_t size); 62 struct hsmp_plat_device *get_hsmp_pdev(void); 63 #endif /* HSMP_H */ 64