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Fri, 5 Mar 2021 19:41:33 +0100 (CET) Received: from tellis.lin.mbt.kalray.eu (unknown [192.168.36.206]) by zimbra2.kalray.eu (Postfix) with ESMTPSA id C521C27E0673; Fri, 5 Mar 2021 19:41:33 +0100 (CET) From: Jules Maselbas To: barebox@lists.infradead.org Date: Fri, 5 Mar 2021 19:33:24 +0100 Message-Id: <20210305183327.29753-2-jmaselbas@kalray.eu> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210305183327.29753-1-jmaselbas@kalray.eu> References: <20210305183327.29753-1-jmaselbas@kalray.eu> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210305_184136_199429_1B471CE9 X-CRM114-Status: GOOD ( 13.28 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Yann Sionneau , Jules Maselbas , Ahmad Fatoum MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" X-SA-Exim-Connect-IP: 2001:8b0:10b:1:d65d:64ff:fe57:4e05 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.ext.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-3.1 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH v2 2/5] kvx: Implement dcache invalidation primitive X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.ext.pengutronix.de) From: Yann Sionneau Signed-off-by: Jules Maselbas --- changes v1 -> v2: - renamed kvx_dcache_invalidate_mem_area to invalidate_dcache_range - replace the implemetation with a simpler version --- arch/kvx/Kconfig | 1 + arch/kvx/include/asm/cache.h | 13 +++++++++++++ arch/kvx/lib/Makefile | 2 +- arch/kvx/lib/cache.c | 25 +++++++++++++++++++++++++ 4 files changed, 40 insertions(+), 1 deletion(-) create mode 100644 arch/kvx/lib/cache.c diff --git a/arch/kvx/Kconfig b/arch/kvx/Kconfig index 8483ae6e6..4e02613ec 100644 --- a/arch/kvx/Kconfig +++ b/arch/kvx/Kconfig @@ -12,6 +12,7 @@ config KVX select FLEXIBLE_BOOTARGS select GENERIC_FIND_NEXT_BIT select HAS_ARCH_SJLJ + select HAS_CACHE select LIBFDT select MFD_SYSCON select OF_BAREBOX_DRIVERS diff --git a/arch/kvx/include/asm/cache.h b/arch/kvx/include/asm/cache.h index 3be176725..0bf3c8f06 100644 --- a/arch/kvx/include/asm/cache.h +++ b/arch/kvx/include/asm/cache.h @@ -8,6 +8,8 @@ #include +void invalidate_dcache_range(unsigned long addr, unsigned long stop); + static inline void sync_caches_for_execution(void) { __builtin_kvx_fence(); @@ -15,4 +17,15 @@ static inline void sync_caches_for_execution(void) __builtin_kvx_barrier(); } +static inline void sync_dcache_icache(void) +{ + sync_caches_for_execution(); +} + +static inline void dcache_inval(void) +{ + __builtin_kvx_fence(); + __builtin_kvx_dinval(); +} + #endif /* __KVX_CACHE_H */ diff --git a/arch/kvx/lib/Makefile b/arch/kvx/lib/Makefile index cee08b0fa..d271ebccf 100644 --- a/arch/kvx/lib/Makefile +++ b/arch/kvx/lib/Makefile @@ -3,4 +3,4 @@ # Copyright (C) 2019 Kalray Inc. # -obj-y += cpuinfo.o board.o dtb.o poweroff.o bootm.o setjmp.o +obj-y += cpuinfo.o board.o dtb.o poweroff.o bootm.o setjmp.o cache.o diff --git a/arch/kvx/lib/cache.c b/arch/kvx/lib/cache.c new file mode 100644 index 000000000..bd074de79 --- /dev/null +++ b/arch/kvx/lib/cache.c @@ -0,0 +1,25 @@ +// SPDX-License-Identifier: GPL-2.0-only +// SPDX-FileCopyrightText: 2021 Yann Sionneau , Kalray Inc. + +#include +#include + +#define KVX_DCACHE_LINE_SIZE (64) +#define KVX_DCACHE_SIZE (128*1024) + +void invalidate_dcache_range(unsigned long addr, unsigned long stop) +{ + long size; + + addr = ALIGN_DOWN(addr, KVX_DCACHE_LINE_SIZE); + size = stop - addr; + + if (size < KVX_DCACHE_SIZE) { + while (addr < stop) { + __builtin_kvx_dinvall((void *)addr); + addr += KVX_DCACHE_LINE_SIZE; + } + } else { + __builtin_kvx_dinval(); + } +} -- 2.17.1 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox