include/cache.h

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (C) 2019 Intel Corporation <www.intel.com>
   4  */
   5
   6 #ifndef __CACHE_H
   7 #define __CACHE_H
   8
   9 #include <linux/types.h>
  10
  11 struct udevice;
  12
  13 /*
  14  * Structure for the cache controller
  15  */
  16 struct cache_info {
  17         phys_addr_t base; /* Base physical address of cache device. */
  18 };
  19
  20 struct cache_ops {
  21         /**
  22          * get_info() - Get basic cache info
  23          *
  24          * @dev:        Device to check (UCLASS_CACHE)
  25          * @info:       Place to put info
  26          * @return 0 if OK, -ve on error
  27          */
  28         int (*get_info)(struct udevice *dev, struct cache_info *info);
  29
  30         /**
  31          * enable() - Enable cache
  32          *
  33          * @dev:        Device to check (UCLASS_CACHE)
  34          * @return 0 if OK, -ve on error
  35          */
  36         int (*enable)(struct udevice *dev);
  37
  38         /**
  39          * disable() - Flush and disable cache
  40          *
  41          * @dev:        Device to check (UCLASS_CACHE)
  42          * @return 0 if OK, -ve on error
  43          */
  44         int (*disable)(struct udevice *dev);
  45 };
  46
  47 #define cache_get_ops(dev)      ((struct cache_ops *)(dev)->driver->ops)
  48
  49 /**
  50  * cache_get_info() - Get information about a cache controller
  51  *
  52  * @dev:        Device to check (UCLASS_CACHE)
  53  * @info:       Returns cache info
  54  * Return: 0 if OK, -ve on error
  55  */
  56 int cache_get_info(struct udevice *dev, struct cache_info *info);
  57
  58 /**
  59  * cache_enable() - Enable cache
  60  *
  61  * @dev:        Device to check (UCLASS_CACHE)
  62  * Return: 0 if OK, -ve on error
  63  */
  64 int cache_enable(struct udevice *dev);
  65
  66 /**
  67  * cache_disable() - Flush and disable cache
  68  *
  69  * @dev:        Device to check (UCLASS_CACHE)
  70  * Return: 0 if OK, -ve on error
  71  */
  72 int cache_disable(struct udevice *dev);
  73 #endif