drivers/misc/sram.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Defines for the SRAM driver
   4  */
   5 #ifndef __SRAM_H
   6 #define __SRAM_H
   7
   8 struct sram_config {
   9         int (*init)(void);
  10         bool map_only_reserved;
  11 };
  12
  13 struct sram_partition {
  14         void __iomem *base;
  15
  16         struct gen_pool *pool;
  17         struct bin_attribute battr;
  18         struct mutex lock;
  19         struct list_head list;
  20 };
  21
  22 struct sram_dev {
  23         const struct sram_config *config;
  24
  25         struct device *dev;
  26         void __iomem *virt_base;
  27         bool no_memory_wc;
  28
  29         struct gen_pool *pool;
  30
  31         struct sram_partition *partition;
  32         u32 partitions;
  33 };
  34
  35 struct sram_reserve {
  36         struct list_head list;
  37         u32 start;
  38         u32 size;
  39         struct resource res;
  40         bool export;
  41         bool pool;
  42         bool protect_exec;
  43         const char *label;
  44 };
  45
  46 #ifdef CONFIG_SRAM_EXEC
  47 int sram_check_protect_exec(struct sram_dev *sram, struct sram_reserve *block,
  48                             struct sram_partition *part);
  49 int sram_add_protect_exec(struct sram_partition *part);
  50 #else
  51 static inline int sram_check_protect_exec(struct sram_dev *sram,
  52                                           struct sram_reserve *block,
  53                                           struct sram_partition *part)
  54 {
  55         return -ENODEV;
  56 }
  57
  58 static inline int sram_add_protect_exec(struct sram_partition *part)
  59 {
  60         return -ENODEV;
  61 }
  62 #endif /* CONFIG_SRAM_EXEC */
  63 #endif /* __SRAM_H */