[PATCH 5/6] or1k: New cache manager.

Joel Sherrill joel.sherrill at oarcorp.com
Tue Sep 16 14:55:12 UTC 2014


I pushed the rest but this (#5) does not apply cleanly.

Please rebase your tree, make sure I merged the others
ok, and recut the patch..

Thanks.

--joel

On 9/15/2014 5:33 PM, Hesham ALMatary wrote:
> Implement new cache functions for or1k and create new bspstart function
> for or1ksim to initialize instruction and data caches. Also, sim.cfg
> is modified to enable/confiure cache units.
> ---
>  c/src/lib/libbsp/or1k/or1ksim/Makefile.am        |  14 +-
>  c/src/lib/libbsp/or1k/or1ksim/preinstall.am      |   4 +
>  c/src/lib/libbsp/or1k/or1ksim/sim.cfg            |  21 +-
>  c/src/lib/libbsp/or1k/or1ksim/startup/bspstart.c |  25 +++
>  c/src/lib/libbsp/or1k/shared/include/cache_.h    |  43 ++++
>  c/src/lib/libcpu/or1k/Makefile.am                |   3 +-
>  c/src/lib/libcpu/or1k/preinstall.am              |   4 +
>  c/src/lib/libcpu/or1k/shared/cache/cache.c       | 241 +++++++++++++++++++++++
>  c/src/lib/libcpu/or1k/shared/cache/cache_.h      |   2 +-
>  9 files changed, 339 insertions(+), 18 deletions(-)
>  create mode 100644 c/src/lib/libbsp/or1k/or1ksim/startup/bspstart.c
>  create mode 100644 c/src/lib/libbsp/or1k/shared/include/cache_.h
>  create mode 100644 c/src/lib/libcpu/or1k/shared/cache/cache.c
>
> diff --git a/c/src/lib/libbsp/or1k/or1ksim/Makefile.am b/c/src/lib/libbsp/or1k/or1ksim/Makefile.am
> index 7af4fd0..cf6b8b8 100644
> --- a/c/src/lib/libbsp/or1k/or1ksim/Makefile.am
> +++ b/c/src/lib/libbsp/or1k/or1ksim/Makefile.am
> @@ -30,6 +30,7 @@ include_bsp_HEADERS += ../../shared/include/irq-info.h
>  include_bsp_HEADERS += ../../shared/include/stackalloc.h
>  include_bsp_HEADERS += ../../shared/include/uart-output-char.h
>  include_bsp_HEADERS += ../../shared/tod.h
> +include_bsp_HEADERS += ../shared/include/cache_.h
>  include_bsp_HEADERS += include/irq.h
>  include_bsp_HEADERS += include/uart.h
>  include_bsp_HEADERS += include/or1ksim.h
> @@ -61,8 +62,8 @@ libbsp_a_CPPFLAGS =
>  libbsp_a_LIBADD =
>
>  # Startup
> -libbsp_a_SOURCES += ../../shared/bspstart.c
>  libbsp_a_SOURCES += ../../shared/bspreset.c
> +libbsp_a_SOURCES += startup/bspstart.c
>
>  # Shared
>  libbsp_a_SOURCES += ../../shared/bootcard.c
> @@ -72,8 +73,6 @@ libbsp_a_SOURCES += ../../shared/bsplibc.c
>  libbsp_a_SOURCES += ../../shared/bsppost.c
>  libbsp_a_SOURCES += ../../shared/bsppredriverhook.c
>  libbsp_a_SOURCES += ../../shared/bsppretaskinghook.c
> -libbsp_a_SOURCES += ../../shared/cpucounterread.c
> -libbsp_a_SOURCES += ../../shared/cpucounterdiff.c
>  libbsp_a_SOURCES += ../../shared/gnatinstallhandler.c
>  libbsp_a_SOURCES += ../../shared/sbrk.c
>  libbsp_a_SOURCES += ../../shared/src/stackalloc.c
> @@ -100,9 +99,12 @@ libbsp_a_SOURCES += ../../shared/src/irq-info.c
>  libbsp_a_SOURCES += irq/irq.c
>
>  # Cache
> -libbsp_a_SOURCES += ../../../libcpu/shared/src/cache_manager.c
> -libbsp_a_SOURCES += ../../shared/include/cache_.h
> -libbsp_a_CPPFLAGS += -I$(srcdir)/../../shared/include
> +# Cache
> +libbsp_a_LIBADD += ../../../libcpu/@RTEMS_CPU@/shared/cache.rel
> +
> +#libbsp_a_SOURCES += ../../../libcpu/shared/src/cache_manager.c
> +#libbsp_a_SOURCES += ../../shared/include/cache_.h
> +#libbsp_a_CPPFLAGS += -I$(srcdir)/../../shared/include
>
>  ###############################################################################
>  #                  Special Rules                                              #
> diff --git a/c/src/lib/libbsp/or1k/or1ksim/preinstall.am b/c/src/lib/libbsp/or1k/or1ksim/preinstall.am
> index 1561b18..c0fa6b8 100644
> --- a/c/src/lib/libbsp/or1k/or1ksim/preinstall.am
> +++ b/c/src/lib/libbsp/or1k/or1ksim/preinstall.am
> @@ -86,6 +86,10 @@ $(PROJECT_INCLUDE)/bsp/tod.h: ../../shared/tod.h $(PROJECT_INCLUDE)/bsp/$(dirsta
>         $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/bsp/tod.h
>  PREINSTALL_FILES += $(PROJECT_INCLUDE)/bsp/tod.h
>
> +$(PROJECT_INCLUDE)/bsp/cache_.h: ../shared/include/cache_.h $(PROJECT_INCLUDE)/bsp/$(dirstamp)
> +       $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/bsp/cache_.h
> +PREINSTALL_FILES += $(PROJECT_INCLUDE)/bsp/cache_.h
> +
>  $(PROJECT_INCLUDE)/bsp/irq.h: include/irq.h $(PROJECT_INCLUDE)/bsp/$(dirstamp)
>         $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/bsp/irq.h
>  PREINSTALL_FILES += $(PROJECT_INCLUDE)/bsp/irq.h
> diff --git a/c/src/lib/libbsp/or1k/or1ksim/sim.cfg b/c/src/lib/libbsp/or1k/or1ksim/sim.cfg
> index 061f61a..ec73e3d 100644
> --- a/c/src/lib/libbsp/or1k/or1ksim/sim.cfg
> +++ b/c/src/lib/libbsp/or1k/or1ksim/sim.cfg
> @@ -35,23 +35,23 @@ section mc
>  end
>
>  section ic
> -  enabled   =   0
> +  enabled   =   1
>    nsets     = 256
>    nways     =   1
> -  blocksize =  16
> +  blocksize =  32
>    hitdelay  =  20
> -  missdelay =  20
> +  missdelay =  60
>  end
>
>  section dc
> -  enabled = 0
> -  nsets = 256
> +  enabled = 1
> +  nsets = 256
>    nways = 1
> -  blocksize = 16
> -  load_hitdelay = 0
> -  load_missdelay = 0
> -  store_hitdelay = 0
> -  store_missdelay = 0
> +  blocksize = 32
> +  load_hitdelay = 40
> +  load_missdelay = 120
> +  store_hitdelay = 40
> +  store_missdelay = 120
>  end
>
>  section pic
> @@ -78,6 +78,7 @@ section cpu
>    ver = 0x12
>    cfg = 0x00
>    rev = 0x0001
> +  upr = 0x0000075f
>    superscalar = 0
>    hazards = 0
>    dependstats = 0
> diff --git a/c/src/lib/libbsp/or1k/or1ksim/startup/bspstart.c b/c/src/lib/libbsp/or1k/or1ksim/startup/bspstart.c
> new file mode 100644
> index 0000000..d9fb7a7
> --- /dev/null
> +++ b/c/src/lib/libbsp/or1k/or1ksim/startup/bspstart.c
> @@ -0,0 +1,25 @@
> +/**
> + * @file
> + *
> + * @ingroup or1ksim
> + *
> + * @brief Benchmark timer support.
> + */
> +
> +/*
> + * Copyright (c) 2014 by Hesham ALMatary
> + *
> + *  The license and distribution terms for this file may be
> + *  found in the file LICENSE in this distribution or at
> + *  http://www.rtems.org/license/LICENSE
> + */
> +
> +#include <bsp.h>
> +#include <bsp/bootcard.h>
> +#include <libcpu/cache.h>
> +
> +void bsp_start( void )
> +{
> +  _CPU_cache_enable_instruction();
> +  _CPU_cache_enable_data();
> +}
> diff --git a/c/src/lib/libbsp/or1k/shared/include/cache_.h b/c/src/lib/libbsp/or1k/shared/include/cache_.h
> new file mode 100644
> index 0000000..ee54227
> --- /dev/null
> +++ b/c/src/lib/libbsp/or1k/shared/include/cache_.h
> @@ -0,0 +1,43 @@
> +/*
> + * COPYRIGHT (c) 2014 Hesham ALMatary <heshamelmatary at gmail.com>
> + *
> + * The license and distribution terms for this file may be
> + * found in the file LICENSE in this distribution or at
> + * http://www.rtems.org/license/LICENSE.
> + */
> +
> +#ifndef LIBBSP_OR1K_SHARED_CACHE_H
> +#define LIBBSP_OR1K_SHARED_CACHE_H
> +
> +#include <assert.h>
> +#include <bsp.h>
> +#include <rtems/rtems/intr.h>
> +
> +
> +#ifdef __cplusplus
> +extern "C" {
> +#endif /* __cplusplus */
> +
> +/* These two defines also ensure that the rtems_cache_* functions have bodies */
> +#define CPU_DATA_CACHE_ALIGNMENT        32
> +#define CPU_INSTRUCTION_CACHE_ALIGNMENT 32
> +
> +#define CPU_CACHE_SUPPORT_PROVIDES_CACHE_SIZE_FUNCTIONS 1
> +
> +static inline size_t
> +_CPU_cache_get_data_cache_size( const uint32_t level )
> +{
> +  return (level == 0 || level == 1)? 8192 : 0;
> +}
> +
> +static inline size_t
> +_CPU_cache_get_instruction_cache_size( const uint32_t level )
> +{
> +  return (level == 0 || level == 1)? 8192 : 0;
> +}
> +
> +#ifdef __cplusplus
> +}
> +#endif /* __cplusplus */
> +
> +#endif /* LIBBSP_OR1K_SHARED_CACHE_H */
> diff --git a/c/src/lib/libcpu/or1k/Makefile.am b/c/src/lib/libcpu/or1k/Makefile.am
> index f4a6372..0148548 100644
> --- a/c/src/lib/libcpu/or1k/Makefile.am
> +++ b/c/src/lib/libcpu/or1k/Makefile.am
> @@ -10,8 +10,9 @@ include_libcpudir = $(includedir)/libcpu
>
>  ## shared/cache
>  include_libcpu_HEADERS = ../shared/include/cache.h
> +include_libcpu_HEADERS += shared/cache/cache_.h
>  noinst_PROGRAMS += shared/cache.rel
> -shared_cache_rel_SOURCES = ../shared/src/no_cache.c shared/cache/cache_.h
> +shared_cache_rel_SOURCES = shared/cache/cache.c ../shared/src/cache_manager.c
>  shared_cache_rel_CPPFLAGS = $(AM_CPPFLAGS) -I$(srcdir)/shared/cache
>  shared_cache_rel_LDFLAGS = $(RTEMS_RELLDFLAGS)
>
> diff --git a/c/src/lib/libcpu/or1k/preinstall.am b/c/src/lib/libcpu/or1k/preinstall.am
> index ee9d0da..84864cb 100644
> --- a/c/src/lib/libcpu/or1k/preinstall.am
> +++ b/c/src/lib/libcpu/or1k/preinstall.am
> @@ -22,3 +22,7 @@ $(PROJECT_INCLUDE)/libcpu/cache.h: ../shared/include/cache.h $(PROJECT_INCLUDE)/
>         $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/libcpu/cache.h
>  PREINSTALL_FILES += $(PROJECT_INCLUDE)/libcpu/cache.h
>
> +$(PROJECT_INCLUDE)/libcpu/cache_.h: shared/cache/cache_.h $(PROJECT_INCLUDE)/libcpu/$(dirstamp)
> +       $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/libcpu/cache_.h
> +PREINSTALL_FILES += $(PROJECT_INCLUDE)/libcpu/cache_.h
> +
> diff --git a/c/src/lib/libcpu/or1k/shared/cache/cache.c b/c/src/lib/libcpu/or1k/shared/cache/cache.c
> new file mode 100644
> index 0000000..fdc67ce
> --- /dev/null
> +++ b/c/src/lib/libcpu/or1k/shared/cache/cache.c
> @@ -0,0 +1,241 @@
> +/*
> + * COPYRIGHT (c) 2014 Hesham ALMatary <heshamelmatary at gmail.com>
> + *
> + * COPYRIGHT (c) 1989-2006
> + * On-Line Applications Research Corporation (OAR).
> + *
> + * The license and distribution terms for this file may be
> + * found in the file LICENSE in this distribution or at
> + * http://www.rtems.org/license/LICENSE.
> + */
> +
> +#include <rtems/score/cpu.h>
> +#include <rtems/score/interr.h>
> +#include <rtems/score/or1k-utility.h>
> +#include <libcpu/cache.h>
> +
> +static inline void _CPU_OR1K_Cache_enable_data(void)
> +{
> +  uint32_t sr;
> +   ISR_Level level;
> +
> +  _ISR_Disable (level);
> +  sr = _OR1K_mfspr(CPU_OR1K_SPR_SR);
> +  _OR1K_mtspr(CPU_OR1K_SPR_SR, sr | CPU_OR1K_SPR_SR_DCE);
> +
> +  _ISR_Enable(level);
> +}
> +
> +static inline void _CPU_OR1K_Cache_disable_data(void)
> +{
> +  uint32_t sr;
> +   ISR_Level level;
> +
> +  _ISR_Disable (level);
> +
> +  sr = _OR1K_mfspr(CPU_OR1K_SPR_SR);
> +  _OR1K_mtspr(CPU_OR1K_SPR_SR, (sr & ~CPU_OR1K_SPR_SR_DCE));
> +
> +  _ISR_Enable(level);
> +}
> +
> +static inline void _CPU_OR1K_Cache_enable_instruction(void)
> +{
> +  uint32_t sr;
> +   ISR_Level level;
> +
> +  _ISR_Disable (level);
> +
> +  sr = _OR1K_mfspr(CPU_OR1K_SPR_SR);
> +  _OR1K_mtspr(CPU_OR1K_SPR_SR, sr | CPU_OR1K_SPR_SR_ICE);
> +
> +  _ISR_Enable(level);
> +}
> +
> +static inline void _CPU_OR1K_Cache_disable_instruction(void)
> +{
> +  uint32_t sr;
> +  ISR_Level level;
> +
> +  _ISR_Disable (level);
> +
> +  sr = _OR1K_mfspr(CPU_OR1K_SPR_SR);
> +  _OR1K_mtspr(CPU_OR1K_SPR_SR, (sr & ~CPU_OR1K_SPR_SR_ICE));
> +
> +  _ISR_Enable(level);
> +}
> +
> +static inline void _CPU_OR1K_Cache_data_block_prefetch(const void *d_addr)
> +{
> +  ISR_Level level;
> +
> +  _ISR_Disable (level);
> +
> +  _OR1K_mtspr(CPU_OR1K_SPR_DCBPR, d_addr);
> +
> +  _ISR_Enable(level);
> +}
> +
> +static inline void _CPU_OR1K_Cache_data_block_flush(const void *d_addr)
> +{
> +   ISR_Level level;
> +  _ISR_Disable (level);
> +
> +  _OR1K_mtspr(CPU_OR1K_SPR_DCBFR, d_addr);
> +
> +  _ISR_Enable(level);
> +}
> +
> +static inline void _CPU_OR1K_Cache_data_block_invalidate(const void *d_addr)
> +{
> +   ISR_Level level;
> +  _ISR_Disable (level);
> +
> +  _OR1K_mtspr(CPU_OR1K_SPR_DCBIR, d_addr);
> +
> +  _ISR_Enable(level);
> +}
> +
> +static inline void _CPU_OR1K_Cache_data_block_writeback(const void *d_addr)
> +{
> +   ISR_Level level;
> +  _ISR_Disable (level);
> +
> +  _OR1K_mtspr(CPU_OR1K_SPR_DCBWR, d_addr);
> +
> +  _ISR_Enable(level);
> +}
> +
> +static inline void _CPU_OR1K_Cache_data_block_lock(const void *d_addr)
> +{
> +   ISR_Level level;
> +  _ISR_Disable (level);
> +
> +  _OR1K_mtspr(CPU_OR1K_SPR_DCBLR, d_addr);
> +
> +  _ISR_Enable(level);
> +}
> +
> +static inline void _CPU_OR1K_Cache_instruction_block_prefetch
> +(const void *d_addr)
> +{
> +   ISR_Level level;
> +  _ISR_Disable (level);
> +
> +  _OR1K_mtspr(CPU_OR1K_SPR_ICBPR, d_addr);
> +
> +  _ISR_Enable(level);
> +}
> +
> +static inline void _CPU_OR1K_Cache_instruction_block_invalidate
> +(const void *d_addr)
> +{
> +   ISR_Level level;
> +  _ISR_Disable (level);
> +
> +  _OR1K_mtspr(CPU_OR1K_SPR_ICBIR, d_addr);
> +
> +  _ISR_Enable(level);
> +}
> +
> +static inline void _CPU_OR1K_Cache_instruction_block_lock
> +(const void *d_addr)
> +{
> +   ISR_Level level;
> +  _ISR_Disable (level);
> +
> +  _OR1K_mtspr(CPU_OR1K_SPR_ICBLR, d_addr);
> +
> +  _ISR_Enable(level);
> +}
> +
> +/* Implement RTEMS cache manager functions */
> +
> +void _CPU_cache_flush_1_data_line(const void *d_addr)
> +{
> +   ISR_Level level;
> +  _ISR_Disable (level);
> +
> +  _CPU_OR1K_Cache_data_block_flush(d_addr);
> +
> +  //asm volatile("l.csync");
> +
> +  _ISR_Enable(level);
> +}
> +
> +void _CPU_cache_invalidate_1_data_line(const void *d_addr)
> +{
> +   ISR_Level level;
> +  _ISR_Disable (level);
> +
> +  _CPU_OR1K_Cache_data_block_invalidate(d_addr);
> +
> +  _ISR_Enable(level);
> +}
> +
> +void _CPU_cache_freeze_data(void)
> +{
> +  /* Do nothing */
> +}
> +
> +void _CPU_cache_unfreeze_data(void)
> +{
> +  /* Do nothing */
> +}
> +
> +void _CPU_cache_invalidate_1_instruction_line(const void *d_addr)
> +{
> +   ISR_Level level;
> +  _ISR_Disable (level);
> +
> +  _CPU_OR1K_Cache_instruction_block_invalidate(d_addr);
> +
> +  _ISR_Enable(level);
> +}
> +
> +void _CPU_cache_freeze_instruction(void)
> +{
> +  /* Do nothing */
> +}
> +
> +void _CPU_cache_unfreeze_instruction(void)
> +{
> +  /* Do nothing */
> +}
> +
> +void _CPU_cache_flush_entire_data(void)
> +{
> +
> +}
> +
> +void _CPU_cache_invalidate_entire_data(void)
> +{
> +
> +}
> +
> +void _CPU_cache_invalidate_entire_instruction(void)
> +{
> +
> +}
> +
> +void _CPU_cache_enable_data(void)
> +{
> +  _CPU_OR1K_Cache_enable_data();
> +}
> +
> +void _CPU_cache_disable_data(void)
> +{
> +  _CPU_OR1K_Cache_disable_data();
> +
> +}
> +
> +void _CPU_cache_enable_instruction(void)
> +{
> +
> +  _CPU_OR1K_Cache_enable_instruction();
> +}
> +
> +void _CPU_cache_disable_instruction(void)
> +{
> +  _CPU_OR1K_Cache_disable_instruction();
> +}
> diff --git a/c/src/lib/libcpu/or1k/shared/cache/cache_.h b/c/src/lib/libcpu/or1k/shared/cache/cache_.h
> index 08d9ecc..5f08410 100644
> --- a/c/src/lib/libcpu/or1k/shared/cache/cache_.h
> +++ b/c/src/lib/libcpu/or1k/shared/cache/cache_.h
> @@ -5,7 +5,7 @@
>  #ifndef __OR1K_CACHE_H
>  #define __OR1K_CACHE_H
>
> -#include <libcpu/cache.h>
> +#include <bsp/cache_.h>
>
>  #endif
>  /* end of include file */
> --
> 1.9.3
>
> _______________________________________________
> devel mailing list
> devel at rtems.org
> http://lists.rtems.org/mailman/listinfo/devel

-- 
Joel Sherrill, Ph.D.             Director of Research & Development
joel.sherrill at OARcorp.com        On-Line Applications Research
Ask me about RTEMS: a free RTOS  Huntsville AL 35805
Support Available                (256) 722-9985




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