xref: /OK3568_Linux_fs/kernel/arch/sh/include/asm/sram.h (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun #ifndef __ASM_SRAM_H
3*4882a593Smuzhiyun #define __ASM_SRAM_H
4*4882a593Smuzhiyun 
5*4882a593Smuzhiyun #ifdef CONFIG_HAVE_SRAM_POOL
6*4882a593Smuzhiyun 
7*4882a593Smuzhiyun #include <linux/spinlock.h>
8*4882a593Smuzhiyun #include <linux/genalloc.h>
9*4882a593Smuzhiyun 
10*4882a593Smuzhiyun /* arch/sh/mm/sram.c */
11*4882a593Smuzhiyun extern struct gen_pool *sram_pool;
12*4882a593Smuzhiyun 
sram_alloc(size_t len)13*4882a593Smuzhiyun static inline unsigned long sram_alloc(size_t len)
14*4882a593Smuzhiyun {
15*4882a593Smuzhiyun 	if (!sram_pool)
16*4882a593Smuzhiyun 		return 0UL;
17*4882a593Smuzhiyun 
18*4882a593Smuzhiyun 	return gen_pool_alloc(sram_pool, len);
19*4882a593Smuzhiyun }
20*4882a593Smuzhiyun 
sram_free(unsigned long addr,size_t len)21*4882a593Smuzhiyun static inline void sram_free(unsigned long addr, size_t len)
22*4882a593Smuzhiyun {
23*4882a593Smuzhiyun 	return gen_pool_free(sram_pool, addr, len);
24*4882a593Smuzhiyun }
25*4882a593Smuzhiyun 
26*4882a593Smuzhiyun #else
27*4882a593Smuzhiyun 
sram_alloc(size_t len)28*4882a593Smuzhiyun static inline unsigned long sram_alloc(size_t len)
29*4882a593Smuzhiyun {
30*4882a593Smuzhiyun 	return 0;
31*4882a593Smuzhiyun }
32*4882a593Smuzhiyun 
sram_free(unsigned long addr,size_t len)33*4882a593Smuzhiyun static inline void sram_free(unsigned long addr, size_t len)
34*4882a593Smuzhiyun {
35*4882a593Smuzhiyun }
36*4882a593Smuzhiyun 
37*4882a593Smuzhiyun #endif /* CONFIG_HAVE_SRAM_POOL */
38*4882a593Smuzhiyun 
39*4882a593Smuzhiyun #endif /* __ASM_SRAM_H */
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