| /* |
| * 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__ */ |
| |