Commit | Line | Data |
---|---|---|
2f9ea1bd SM |
1 | /* |
2 | * Handling of a sram zone for bestcomm | |
3 | * | |
4 | * | |
5 | * Copyright (C) 2007 Sylvain Munaut <tnt@246tNt.com> | |
6 | * | |
7 | * This file is licensed under the terms of the GNU General Public License | |
8 | * version 2. This program is licensed "as is" without any warranty of any | |
9 | * kind, whether express or implied. | |
10 | */ | |
11 | ||
12 | #ifndef __BESTCOMM_SRAM_H__ | |
13 | #define __BESTCOMM_SRAM_H__ | |
14 | ||
15 | #include <asm/rheap.h> | |
16 | #include <asm/mmu.h> | |
17 | #include <linux/spinlock.h> | |
18 | ||
19 | ||
20 | /* Structure used internally */ | |
21 | /* The internals are here for the inline functions | |
22 | * sake, certainly not for the user to mess with ! | |
23 | */ | |
24 | struct bcom_sram { | |
25 | phys_addr_t base_phys; | |
26 | void *base_virt; | |
27 | unsigned int size; | |
28 | rh_info_t *rh; | |
29 | spinlock_t lock; | |
30 | }; | |
31 | ||
32 | extern struct bcom_sram *bcom_sram; | |
33 | ||
34 | ||
35 | /* Public API */ | |
36 | extern int bcom_sram_init(struct device_node *sram_node, char *owner); | |
37 | extern void bcom_sram_cleanup(void); | |
38 | ||
39 | extern void* bcom_sram_alloc(int size, int align, phys_addr_t *phys); | |
40 | extern void bcom_sram_free(void *ptr); | |
41 | ||
42 | static inline phys_addr_t bcom_sram_va2pa(void *va) { | |
43 | return bcom_sram->base_phys + | |
44 | (unsigned long)(va - bcom_sram->base_virt); | |
45 | } | |
46 | ||
47 | static inline void *bcom_sram_pa2va(phys_addr_t pa) { | |
48 | return bcom_sram->base_virt + | |
49 | (unsigned long)(pa - bcom_sram->base_phys); | |
50 | } | |
51 | ||
52 | ||
53 | #endif /* __BESTCOMM_SRAM_H__ */ | |
54 |