| /* | |
| * Handling of a sram zone for bestcomm | |
| * | |
| * | |
| * Copyright (C) 2007 Sylvain Munaut <tnt@246tNt.com> | |
| * | |
| * This file is licensed under the terms of the GNU General Public License | |
| * version 2. This program is licensed "as is" without any warranty of any | |
| * kind, whether express or implied. | |
| */ | |
| #ifndef __BESTCOMM_SRAM_H__ | |
| #define __BESTCOMM_SRAM_H__ | |
| #include <asm/rheap.h> | |
| #include <asm/mmu.h> | |
| #include <linux/spinlock.h> | |
| /* Structure used internally */ | |
| /* The internals are here for the inline functions | |
| * sake, certainly not for the user to mess with ! | |
| */ | |
| struct bcom_sram { | |
| phys_addr_t base_phys; | |
| void *base_virt; | |
| unsigned int size; | |
| rh_info_t *rh; | |
| spinlock_t lock; | |
| }; | |
| extern struct bcom_sram *bcom_sram; | |
| /* Public API */ | |
| extern int bcom_sram_init(struct device_node *sram_node, char *owner); | |
| extern void bcom_sram_cleanup(void); | |
| extern void* bcom_sram_alloc(int size, int align, phys_addr_t *phys); | |
| extern void bcom_sram_free(void *ptr); | |
| static inline phys_addr_t bcom_sram_va2pa(void *va) { | |
| return bcom_sram->base_phys + | |
| (unsigned long)(va - bcom_sram->base_virt); | |
| } | |
| static inline void *bcom_sram_pa2va(phys_addr_t pa) { | |
| return bcom_sram->base_virt + | |
| (unsigned long)(pa - bcom_sram->base_phys); | |
| } | |
| #endif /* __BESTCOMM_SRAM_H__ */ | |