[PATCH 1/5] libmm score API

[Gedare Bloom]

On Sun, Aug 25, 2013 at 8:14 PM, Hesham AL-Matary
<heshamelmatary at gmail.com> wrote:
> ---
>  cpukit/score/Makefile.am                  |  2 +
>  cpukit/score/include/rtems/score/mm.h     | 52 ++++++++++++++++++++
>  cpukit/score/include/rtems/score/mmimpl.h | 80 +++++++++++++++++++++++++++++++
>  cpukit/score/preinstall.am                |  8 ++++
>  4 files changed, 142 insertions(+)
>  create mode 100644 cpukit/score/include/rtems/score/mm.h
>  create mode 100644 cpukit/score/include/rtems/score/mmimpl.h
>
> diff --git a/cpukit/score/Makefile.am b/cpukit/score/Makefile.am
> index c9d2d47..b94af80 100644
> --- a/cpukit/score/Makefile.am
> +++ b/cpukit/score/Makefile.am
> @@ -37,6 +37,8 @@ include_rtems_score_HEADERS += include/rtems/score/interr.h
>  include_rtems_score_HEADERS += include/rtems/score/isr.h
>  include_rtems_score_HEADERS += include/rtems/score/isrlevel.h
>  include_rtems_score_HEADERS += include/rtems/score/isrlock.h
> +include_rtems_score_HEADERS += include/rtems/score/mm.h
> +include_rtems_score_HEADERS += include/rtems/score/mmimpl.h
>  include_rtems_score_HEADERS += include/rtems/score/freechain.h
>  include_rtems_score_HEADERS += include/rtems/score/object.h
>  include_rtems_score_HEADERS += include/rtems/score/objectimpl.h
> diff --git a/cpukit/score/include/rtems/score/mm.h b/cpukit/score/include/rtems/score/mm.h
> new file mode 100644
> index 0000000..43f6fc9
> --- /dev/null
> +++ b/cpukit/score/include/rtems/score/mm.h
> @@ -0,0 +1,52 @@
> +/**
> + * @file
> + *
> + * @brief Manages use of MPU/MMU units to provide memory management.
> + */
> +
> +/*
> + * Copyright (c) 2013 Hesham Al-Matary.
> + * Copyright (c) 2013 Gedare Bloom.
> + *
> + * The license and distribution terms for this file may be
> + * found in the file LICENSE in this distribution or at
> + * http://www.rtems.com/license/LICENSE.
> + */
> +
> +#ifndef _RTEMS_SCORE_MM_H
> +#define _RTEMS_SCORE_MM_H
> +
> +/* @defgroup SuperCoreMM Memory Management Support
> + *
> + * @ingroup Score
> + */
> +/**@{*/
> +
> +#ifdef __cplusplus
> +extern "C" {
> +#endif
> +
> +/**
> + * @brief _Memory_management_Region Flags defs
> + */
> +#define RTEMS_MM_REGION_NO_PROTECTION           0x0
> +#define RTEMS_MM_REGION_PROTECTION_READ_ONLY    0x1
> +#define RTEMS_MM_REGION_PROTECTION_WRITE        0x2
> +#define RTEMS_MM_REGION_NO_ACCESS               0x3
> +//#define RTEMS_MM_REGION_PROTECTION_EXEC   0x4
> +
Is there a reason to have "no protection"? Does it make sense to
define "No access" as 0x0?

> +void _Memory_management_Initialize( void );
> +
> +void _Memory_management_Set_attributes(
> +  uintptr_t base,
> +  size_t size,
> +  uint32_t attr
> +);
> +
> +#ifdef __cplusplus
> +}
> +#endif
> +
> +/**@}*/
> +
> +#endif
> diff --git a/cpukit/score/include/rtems/score/mmimpl.h b/cpukit/score/include/rtems/score/mmimpl.h
> new file mode 100644
> index 0000000..7eecef0
> --- /dev/null
> +++ b/cpukit/score/include/rtems/score/mmimpl.h
> @@ -0,0 +1,80 @@
> +/**
> + * @file
> + *
> + * @brief Inlined Routines from the Memory Management Manager
> + */
> +
> +/*
> + * Copyright (c) 2013 Hesham AL-Matary
> + * Copyright (c) 2013 Gedare Bloom.
> + *
> + * The license and distribution terms for this file may be
> + * found in the file LICENSE in this distribution or at
> + * http://www.rtems.com/license/LICENSE.
> + */
> +
> +#ifndef _RTEMS_SCORE_MMIMPL_H
> +#define _RTEMS_SCORE_MMIMPL_H
> +
> +#ifdef RTEMS_SMP
> +#include <rtems/score/smplock.h>
> +#endif
> +
> +#include <stdint.h>
> +#include <stdlib.h>
> +#include <rtems/score/mm.h>
> +#include <libcpu/mm.h>
> +
> +#ifdef __cplusplus
> +extern "C" {
> +#endif
> +
> +/**
> + * @addtogroup SuperCoreMM
> + */
> +/**@{**/
> +
> +#ifdef RTEMS_SMP
> +SMP_lock_Control mm_lock;
> +#endif
> +
> +/**
> + * @brief Calls _CPU_Memory_management_Initialize.
> + */
> +void _Memory_management_Initialize( void )
> +{
> +#ifdef RTEMS_SMP
> +  _SMP_lock_Initialize( &mm_lock );
> +#endif
> +
> +  _CPU_Memory_management_Initialize();
> +}
> +
> +/**
> + * @brief Calls _CPU_Memory_management_Set_attributes.
> + */
> +void _Memory_management_Set_attributes(
> +  uintptr_t base,
> +  size_t size,
> +  uint32_t attr
> +)
> +{
> +#ifdef RTEMS_SMP
> +  _SMP_lock_Acquire( &mm_lock );
> +#endif
> +
> +  _CPU_Memory_management_Set_attributes(base, size, attr);
> +
> +#ifdef RTEMS_SMP
> +  _SMP_lock_Release( &mm_lock );
> +#endif
> +}
> +
> +/** @}*/
> +
> +#ifdef __cplusplus
> +}
> +#endif
> +
> +#endif
> +/* end of include file */
> diff --git a/cpukit/score/preinstall.am b/cpukit/score/preinstall.am
> index 79a18b5..4b3bfcf 100644
> --- a/cpukit/score/preinstall.am
> +++ b/cpukit/score/preinstall.am
> @@ -131,6 +131,14 @@ $(PROJECT_INCLUDE)/rtems/score/isrlock.h: include/rtems/score/isrlock.h $(PROJEC
>         $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/rtems/score/isrlock.h
>  PREINSTALL_FILES += $(PROJECT_INCLUDE)/rtems/score/isrlock.h
>
> +$(PROJECT_INCLUDE)/rtems/score/mm.h: include/rtems/score/mm.h $(PROJECT_INCLUDE)/rtems/score/$(dirstamp)
> +       $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/rtems/score/mm.h
> +PREINSTALL_FILES += $(PROJECT_INCLUDE)/rtems/score/mm.h
> +
> +$(PROJECT_INCLUDE)/rtems/score/mmimpl.h: include/rtems/score/mmimpl.h $(PROJECT_INCLUDE)/rtems/score/$(dirstamp)
> +       $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/rtems/score/mmimpl.h
> +PREINSTALL_FILES += $(PROJECT_INCLUDE)/rtems/score/mmimpl.h
> +
>  $(PROJECT_INCLUDE)/rtems/score/freechain.h: include/rtems/score/freechain.h $(PROJECT_INCLUDE)/rtems/score/$(dirstamp)
>         $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/rtems/score/freechain.h
>  PREINSTALL_FILES += $(PROJECT_INCLUDE)/rtems/score/freechain.h
> --
> 1.8.3.1
>
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