drivers/platform/x86/amd/hsmp/hsmp.h

   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 MAX_AMD_SOCKETS 8
  25
  26 #define HSMP_CDEV_NAME          "hsmp_cdev"
  27 #define HSMP_DEVNODE_NAME       "hsmp"
  28
  29 struct hsmp_mbaddr_info {
  30         u32 base_addr;
  31         u32 msg_id_off;
  32         u32 msg_resp_off;
  33         u32 msg_arg_off;
  34         u32 size;
  35 };
  36
  37 struct hsmp_socket {
  38         struct bin_attribute hsmp_attr;
  39         struct hsmp_mbaddr_info mbinfo;
  40         void __iomem *metric_tbl_addr;
  41         void __iomem *virt_base_addr;
  42         struct semaphore hsmp_sem;
  43         char name[HSMP_ATTR_GRP_NAME_SIZE];
  44         struct pci_dev *root;
  45         struct device *dev;
  46         u16 sock_ind;
  47         int (*amd_hsmp_rdwr)(struct hsmp_socket *sock, u32 off, u32 *val, bool rw);
  48 };
  49
  50 struct hsmp_plat_device {
  51         struct miscdevice mdev;
  52         struct hsmp_socket *sock;
  53         u32 proto_ver;
  54         u16 num_sockets;
  55         bool is_probed;
  56 };
  57
  58 int hsmp_cache_proto_ver(u16 sock_ind);
  59 int hsmp_test(u16 sock_ind, u32 value);
  60 long hsmp_ioctl(struct file *fp, unsigned int cmd, unsigned long arg);
  61 void hsmp_misc_deregister(void);
  62 int hsmp_misc_register(struct device *dev);
  63 int hsmp_get_tbl_dram_base(u16 sock_ind);
  64 ssize_t hsmp_metric_tbl_read(struct hsmp_socket *sock, char *buf, size_t size);
  65 struct hsmp_plat_device *get_hsmp_pdev(void);
  66 #endif /* HSMP_H */