M7350/kernel/arch/arm/mach-msm/smem_private.h
2024-09-09 08:52:07 +00:00

80 lines
2.2 KiB
C

/* Copyright (c) 2013, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef _ARCH_ARM_MACH_MSM_SMEM_PRIVATE_H_
#define _ARCH_ARM_MACH_MSM_SMEM_PRIVATE_H_
#include <linux/remote_spinlock.h>
#include <mach/ramdump.h>
#define SMD_HEAP_SIZE 512
struct smem_heap_info {
unsigned initialized;
unsigned free_offset;
unsigned heap_remaining;
unsigned reserved;
};
struct smem_heap_entry {
unsigned allocated;
unsigned offset;
unsigned size;
unsigned reserved; /* bits 1:0 reserved, bits 31:2 aux smem base addr */
};
#define BASE_ADDR_MASK 0xfffffffc
struct smem_proc_comm {
unsigned command;
unsigned status;
unsigned data1;
unsigned data2;
};
struct smem_shared {
struct smem_proc_comm proc_comm[4];
unsigned version[32];
struct smem_heap_info heap_info;
struct smem_heap_entry heap_toc[SMD_HEAP_SIZE];
};
struct smem_area {
phys_addr_t phys_addr;
resource_size_t size;
void __iomem *virt_addr;
};
/* used for unit testing spinlocks */
remote_spinlock_t *smem_get_remote_spinlock(void);
bool smem_initialized_check(void);
/**
* smem_module_init_notifier_register() - Register a smem module
* init notifier block
* @nb: Notifier block to be registered
*
* In order to mark the dependency on SMEM Driver module initialization
* register a notifier using this API. Once the smem module_init is
* done, notification will be passed to the registered module.
*/
int smem_module_init_notifier_register(struct notifier_block *nb);
/**
* smem_module_init_notifier_register() - Unregister a smem module
* init notifier block
* @nb: Notifier block to be unregistered
*/
int smem_module_init_notifier_unregister(struct notifier_block *nb);
#endif /* _ARCH_ARM_MACH_MSM_SMEM_PRIVATE_H_ */