55 lines
1.2 KiB
C
Executable file
55 lines
1.2 KiB
C
Executable file
/*
|
|
* 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__ */
|
|
|