drivers/peci/internal.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /* Copyright (c) 2018-2021 Intel Corporation */
   3
   4 #ifndef __PECI_INTERNAL_H
   5 #define __PECI_INTERNAL_H
   6
   7 #include <linux/device.h>
   8 #include <linux/types.h>
   9
  10 struct peci_controller;
  11 struct attribute_group;
  12 struct peci_device;
  13 struct peci_request;
  14
  15 /* PECI CPU address range 0x30-0x37 */
  16 #define PECI_BASE_ADDR          0x30
  17 #define PECI_DEVICE_NUM_MAX     8
  18
  19 struct peci_request *peci_request_alloc(struct peci_device *device, u8 tx_len, u8 rx_len);
  20 void peci_request_free(struct peci_request *req);
  21
  22 int peci_request_status(struct peci_request *req);
  23
  24 u64 peci_request_dib_read(struct peci_request *req);
  25 s16 peci_request_temp_read(struct peci_request *req);
  26
  27 u8 peci_request_data_readb(struct peci_request *req);
  28 u16 peci_request_data_readw(struct peci_request *req);
  29 u32 peci_request_data_readl(struct peci_request *req);
  30 u64 peci_request_data_readq(struct peci_request *req);
  31
  32 struct peci_request *peci_xfer_get_dib(struct peci_device *device);
  33 struct peci_request *peci_xfer_get_temp(struct peci_device *device);
  34
  35 struct peci_request *peci_xfer_pkg_cfg_readb(struct peci_device *device, u8 index, u16 param);
  36 struct peci_request *peci_xfer_pkg_cfg_readw(struct peci_device *device, u8 index, u16 param);
  37 struct peci_request *peci_xfer_pkg_cfg_readl(struct peci_device *device, u8 index, u16 param);
  38 struct peci_request *peci_xfer_pkg_cfg_readq(struct peci_device *device, u8 index, u16 param);
  39
  40 struct peci_request *peci_xfer_pci_cfg_local_readb(struct peci_device *device,
  41                                                    u8 bus, u8 dev, u8 func, u16 reg);
  42 struct peci_request *peci_xfer_pci_cfg_local_readw(struct peci_device *device,
  43                                                    u8 bus, u8 dev, u8 func, u16 reg);
  44 struct peci_request *peci_xfer_pci_cfg_local_readl(struct peci_device *device,
  45                                                    u8 bus, u8 dev, u8 func, u16 reg);
  46
  47 struct peci_request *peci_xfer_ep_pci_cfg_local_readb(struct peci_device *device, u8 seg,
  48                                                       u8 bus, u8 dev, u8 func, u16 reg);
  49 struct peci_request *peci_xfer_ep_pci_cfg_local_readw(struct peci_device *device, u8 seg,
  50                                                       u8 bus, u8 dev, u8 func, u16 reg);
  51 struct peci_request *peci_xfer_ep_pci_cfg_local_readl(struct peci_device *device, u8 seg,
  52                                                       u8 bus, u8 dev, u8 func, u16 reg);
  53
  54 struct peci_request *peci_xfer_ep_pci_cfg_readb(struct peci_device *device, u8 seg,
  55                                                 u8 bus, u8 dev, u8 func, u16 reg);
  56 struct peci_request *peci_xfer_ep_pci_cfg_readw(struct peci_device *device, u8 seg,
  57                                                 u8 bus, u8 dev, u8 func, u16 reg);
  58 struct peci_request *peci_xfer_ep_pci_cfg_readl(struct peci_device *device, u8 seg,
  59                                                 u8 bus, u8 dev, u8 func, u16 reg);
  60
  61 struct peci_request *peci_xfer_ep_mmio32_readl(struct peci_device *device, u8 bar, u8 seg,
  62                                                u8 bus, u8 dev, u8 func, u64 offset);
  63
  64 struct peci_request *peci_xfer_ep_mmio64_readl(struct peci_device *device, u8 bar, u8 seg,
  65                                                u8 bus, u8 dev, u8 func, u64 offset);
  66 /**
  67  * struct peci_device_id - PECI device data to match
  68  * @data: pointer to driver private data specific to device
  69  * @x86_vfm: device vendor-family-model
  70  */
  71 struct peci_device_id {
  72         const void *data;
  73         u32 x86_vfm;
  74 };
  75
  76 extern const struct device_type peci_device_type;
  77 extern const struct attribute_group *peci_device_groups[];
  78
  79 int peci_device_create(struct peci_controller *controller, u8 addr);
  80 void peci_device_destroy(struct peci_device *device);
  81
  82 extern const struct bus_type peci_bus_type;
  83 extern const struct attribute_group *peci_bus_groups[];
  84
  85 /**
  86  * struct peci_driver - PECI driver
  87  * @driver: inherit device driver
  88  * @probe: probe callback
  89  * @remove: remove callback
  90  * @id_table: PECI device match table to decide which device to bind
  91  */
  92 struct peci_driver {
  93         struct device_driver driver;
  94         int (*probe)(struct peci_device *device, const struct peci_device_id *id);
  95         void (*remove)(struct peci_device *device);
  96         const struct peci_device_id *id_table;
  97 };
  98
  99 #define to_peci_driver(__drv)   container_of_const(__drv, struct peci_driver, driver)
 100
 101 int __peci_driver_register(struct peci_driver *driver, struct module *owner,
 102                            const char *mod_name);
 103 /**
 104  * peci_driver_register() - register PECI driver
 105  * @driver: the driver to be registered
 106  *
 107  * PECI drivers that don't need to do anything special in module init should
 108  * use the convenience "module_peci_driver" macro instead
 109  *
 110  * Return: zero on success, else a negative error code.
 111  */
 112 #define peci_driver_register(driver) \
 113         __peci_driver_register(driver, THIS_MODULE, KBUILD_MODNAME)
 114 void peci_driver_unregister(struct peci_driver *driver);
 115
 116 /**
 117  * module_peci_driver() - helper macro for registering a modular PECI driver
 118  * @__peci_driver: peci_driver struct
 119  *
 120  * Helper macro for PECI drivers which do not do anything special in module
 121  * init/exit. This eliminates a lot of boilerplate. Each module may only
 122  * use this macro once, and calling it replaces module_init() and module_exit()
 123  */
 124 #define module_peci_driver(__peci_driver) \
 125         module_driver(__peci_driver, peci_driver_register, peci_driver_unregister)
 126
 127 extern const struct device_type peci_controller_type;
 128
 129 int peci_controller_scan_devices(struct peci_controller *controller);
 130
 131 #endif /* __PECI_INTERNAL_H */