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 	struct clk *clk;
31 
32 	struct sram_partition *partition;
33 	u32 partitions;
34 };
35 
36 struct sram_reserve {
37 	struct list_head list;
38 	u32 start;
39 	u32 size;
40 	struct resource res;
41 	bool export;
42 	bool pool;
43 	bool protect_exec;
44 	const char *label;
45 };
46 
47 #ifdef CONFIG_SRAM_EXEC
48 int sram_check_protect_exec(struct sram_dev *sram, struct sram_reserve *block,
49 			    struct sram_partition *part);
50 int sram_add_protect_exec(struct sram_partition *part);
51 #else
sram_check_protect_exec(struct sram_dev * sram,struct sram_reserve * block,struct sram_partition * part)52 static inline int sram_check_protect_exec(struct sram_dev *sram,
53 					  struct sram_reserve *block,
54 					  struct sram_partition *part)
55 {
56 	return -ENODEV;
57 }
58 
sram_add_protect_exec(struct sram_partition * part)59 static inline int sram_add_protect_exec(struct sram_partition *part)
60 {
61 	return -ENODEV;
62 }
63 #endif /* CONFIG_SRAM_EXEC */
64 #endif /* __SRAM_H */
65