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| System | : | Linux MiraNet 3.0.0-14-generic-pae #23-Ubuntu SMP Mon Nov 21 22:07:10 UTC 2011 i686 |
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/
usr/
src/
linux-headers-3.0.0-14/
arch/
arm/
plat-s5p/
include/
plat/
- drwxr-xr-x
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Viewing file:  sysmmu.h (3.09 KB) -rw-r--r--Select action/file-type:  ( +) |  ( +) |  ( +) | Code ( +) | Session ( +) |  ( +) | SDB ( +) |  ( +) |  ( +) |  ( +) |  ( +) |  ( +) |
/* linux/arch/arm/plat-s5p/include/plat/sysmmu.h
*
* Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* Samsung System MMU driver for S5P platform
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __ASM__PLAT_SYSMMU_H
#define __ASM__PLAT_SYSMMU_H __FILE__
enum S5P_SYSMMU_INTERRUPT_TYPE {
SYSMMU_PAGEFAULT,
SYSMMU_AR_MULTIHIT,
SYSMMU_AW_MULTIHIT,
SYSMMU_BUSERROR,
SYSMMU_AR_SECURITY,
SYSMMU_AR_ACCESS,
SYSMMU_AW_SECURITY,
SYSMMU_AW_PROTECTION, /* 7 */
SYSMMU_FAULTS_NUM
};
#ifdef CONFIG_S5P_SYSTEM_MMU
#include <mach/sysmmu.h>
/**
* s5p_sysmmu_enable() - enable system mmu of ip
* @ips: The ip connected system mmu.
* #pgd: Base physical address of the 1st level page table
*
* This function enable system mmu to transfer address
* from virtual address to physical address
*/
void s5p_sysmmu_enable(sysmmu_ips ips, unsigned long pgd);
/**
* s5p_sysmmu_disable() - disable sysmmu mmu of ip
* @ips: The ip connected system mmu.
*
* This function disable system mmu to transfer address
* from virtual address to physical address
*/
void s5p_sysmmu_disable(sysmmu_ips ips);
/**
* s5p_sysmmu_set_tablebase_pgd() - set page table base address to refer page table
* @ips: The ip connected system mmu.
* @pgd: The page table base address.
*
* This function set page table base address
* When system mmu transfer address from virtaul address to physical address,
* system mmu refer address information from page table
*/
void s5p_sysmmu_set_tablebase_pgd(sysmmu_ips ips, unsigned long pgd);
/**
* s5p_sysmmu_tlb_invalidate() - flush all TLB entry in system mmu
* @ips: The ip connected system mmu.
*
* This function flush all TLB entry in system mmu
*/
void s5p_sysmmu_tlb_invalidate(sysmmu_ips ips);
/** s5p_sysmmu_set_fault_handler() - Fault handler for System MMUs
* @itype: type of fault.
* @pgtable_base: the physical address of page table base. This is 0 if @ips is
* SYSMMU_BUSERROR.
* @fault_addr: the device (virtual) address that the System MMU tried to
* translated. This is 0 if @ips is SYSMMU_BUSERROR.
* Called when interrupt occurred by the System MMUs
* The device drivers of peripheral devices that has a System MMU can implement
* a fault handler to resolve address translation fault by System MMU.
* The meanings of return value and parameters are described below.
* return value: non-zero if the fault is correctly resolved.
* zero if the fault is not handled.
*/
void s5p_sysmmu_set_fault_handler(sysmmu_ips ips,
int (*handler)(enum S5P_SYSMMU_INTERRUPT_TYPE itype,
unsigned long pgtable_base,
unsigned long fault_addr));
#else
#define s5p_sysmmu_enable(ips, pgd) do { } while (0)
#define s5p_sysmmu_disable(ips) do { } while (0)
#define s5p_sysmmu_set_tablebase_pgd(ips, pgd) do { } while (0)
#define s5p_sysmmu_tlb_invalidate(ips) do { } while (0)
#define s5p_sysmmu_set_fault_handler(ips, handler) do { } while (0)
#endif
#endif /* __ASM_PLAT_SYSMMU_H */
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