105 lines
3.2 KiB
C
105 lines
3.2 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 <soc/qcom/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);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* smem_get_free_space() - Get the available allocation free space for a
|
||
|
|
* partition
|
||
|
|
*
|
||
|
|
* @to_proc: remote SMEM host. Determines the applicable partition
|
||
|
|
* @returns: size in bytes available to allocate
|
||
|
|
*
|
||
|
|
* Helper function for SMD so that SMD only scans the channel allocation
|
||
|
|
* table for a partition when it is reasonably certain that a channel has
|
||
|
|
* actually been created, because scanning can be expensive. Creating a channel
|
||
|
|
* will consume some of the free space in a partition, so SMD can compare the
|
||
|
|
* last free space size against the current free space size to determine if
|
||
|
|
* a channel may have been created. SMD can't do this directly, because the
|
||
|
|
* necessary partition internals are restricted to just SMEM.
|
||
|
|
*/
|
||
|
|
unsigned smem_get_free_space(unsigned to_proc);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* smem_get_version() - Get the smem user version number
|
||
|
|
*
|
||
|
|
* @idx: SMEM user idx in SMEM_VERSION_INFO table.
|
||
|
|
* @returns: smem version number if success otherwise zero.
|
||
|
|
*/
|
||
|
|
unsigned smem_get_version(unsigned idx);
|
||
|
|
#endif /* _ARCH_ARM_MACH_MSM_SMEM_PRIVATE_H_ */
|