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_partition {
   9         void __iomem *base;
  10
  11         struct gen_pool *pool;
  12         struct bin_attribute battr;
  13         struct mutex lock;
  14         struct list_head list;
  15 };
  16
  17 struct sram_dev {
  18         struct device *dev;
  19         void __iomem *virt_base;
  20
  21         struct gen_pool *pool;
  22         struct clk *clk;
  23
  24         struct sram_partition *partition;
  25         u32 partitions;
  26 };
  27
  28 struct sram_reserve {
  29         struct list_head list;
  30         u32 start;
  31         u32 size;
  32         bool export;
  33         bool pool;
  34         bool protect_exec;
  35         const char *label;
  36 };
  37
  38 #ifdef CONFIG_SRAM_EXEC
  39 int sram_check_protect_exec(struct sram_dev *sram, struct sram_reserve *block,
  40                             struct sram_partition *part);
  41 int sram_add_protect_exec(struct sram_partition *part);
  42 #else
  43 static inline int sram_check_protect_exec(struct sram_dev *sram,
  44                                           struct sram_reserve *block,
  45                                           struct sram_partition *part)
  46 {
  47         return -ENODEV;
  48 }
  49
  50 static inline int sram_add_protect_exec(struct sram_partition *part)
  51 {
  52         return -ENODEV;
  53 }
  54 #endif /* CONFIG_SRAM_EXEC */
  55 #endif /* __SRAM_H */