From: Prabhakar <prabhakar.csengg@gmail.com> To: Paul Walmsley <paul.walmsley@sifive.com>, Palmer Dabbelt <palmer@dabbelt.com>, Albert Ou <aou@eecs.berkeley.edu>, Geert Uytterhoeven <geert+renesas@glider.be>, Magnus Damm <magnus.damm@gmail.com>, Heiko Stuebner <heiko@sntech.de>, Conor Dooley <conor.dooley@microchip.com>, Samuel Holland <samuel@sholland.org>, Guo Ren <guoren@kernel.org>, Rob Herring <robh+dt@kernel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org> Cc: Jisheng Zhang <jszhang@kernel.org>, Atish Patra <atishp@rivosinc.com>, Anup Patel <apatel@ventanamicro.com>, Andrew Jones <ajones@ventanamicro.com>, Nathan Chancellor <nathan@kernel.org>, Philipp Tomsich <philipp.tomsich@vrull.eu>, devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org, Prabhakar <prabhakar.csengg@gmail.com>, Biju Das <biju.das.jz@bp.renesas.com>, Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Subject: [PATCH v5 4/6] riscv: mm: dma-noncoherent: Pass direction and operation to ALT_CMO_OP() Date: Mon, 12 Dec 2022 11:55:03 +0000 [thread overview] Message-ID: <20221212115505.36770-5-prabhakar.mahadev-lad.rj@bp.renesas.com> (raw) In-Reply-To: <20221212115505.36770-1-prabhakar.mahadev-lad.rj@bp.renesas.com> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Pass direction and operation to ALT_CMO_OP() macro. Vendors might want to perform different operations based on the direction and callbacks (arch_sync_dma_for_device/arch_sync_dma_for_cpu/ arch_dma_prep_coherent) so to handle such cases pass the direction and operation to ALT_CMO_OP() macro. This is in preparation for adding errata for the Andes CPU core. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> --- v4 -> v5 * Updated commit message. RFC v3 -> v4 * New patch --- arch/riscv/include/asm/cacheflush.h | 4 ++++ arch/riscv/include/asm/errata_list.h | 8 ++++++-- arch/riscv/mm/dma-noncoherent.c | 15 ++++++++++----- 3 files changed, 20 insertions(+), 7 deletions(-) diff --git a/arch/riscv/include/asm/cacheflush.h b/arch/riscv/include/asm/cacheflush.h index 03e3b95ae6da..e22019668b9e 100644 --- a/arch/riscv/include/asm/cacheflush.h +++ b/arch/riscv/include/asm/cacheflush.h @@ -8,6 +8,10 @@ #include <linux/mm.h> +#define NON_COHERENT_SYNC_DMA_FOR_DEVICE 0 +#define NON_COHERENT_SYNC_DMA_FOR_CPU 1 +#define NON_COHERENT_DMA_PREP 2 + static inline void local_flush_icache_all(void) { asm volatile ("fence.i" ::: "memory"); diff --git a/arch/riscv/include/asm/errata_list.h b/arch/riscv/include/asm/errata_list.h index 2ba7e6e74540..48e899a8e7a9 100644 --- a/arch/riscv/include/asm/errata_list.h +++ b/arch/riscv/include/asm/errata_list.h @@ -124,7 +124,7 @@ asm volatile(ALTERNATIVE( \ #define THEAD_flush_A0 ".long 0x0275000b" #define THEAD_SYNC_S ".long 0x0190000b" -#define ALT_CMO_OP(_op, _start, _size, _cachesize) \ +#define ALT_CMO_OP(_op, _start, _size, _cachesize, _dir, _ops) \ asm volatile(ALTERNATIVE_2( \ __nops(6), \ "mv a0, %1\n\t" \ @@ -146,7 +146,11 @@ asm volatile(ALTERNATIVE_2( \ ERRATA_THEAD_CMO, CONFIG_ERRATA_THEAD_CMO) \ : : "r"(_cachesize), \ "r"((unsigned long)(_start) & ~((_cachesize) - 1UL)), \ - "r"((unsigned long)(_start) + (_size)) \ + "r"((unsigned long)(_start) + (_size)), \ + "r"((unsigned long)(_start)), \ + "r"((unsigned long)(_size)), \ + "r"((unsigned long)(_dir)), \ + "r"((unsigned long)(_ops)) \ : "a0") #define THEAD_C9XX_RV_IRQ_PMU 17 diff --git a/arch/riscv/mm/dma-noncoherent.c b/arch/riscv/mm/dma-noncoherent.c index d919efab6eba..e2b82034f504 100644 --- a/arch/riscv/mm/dma-noncoherent.c +++ b/arch/riscv/mm/dma-noncoherent.c @@ -19,13 +19,16 @@ void arch_sync_dma_for_device(phys_addr_t paddr, size_t size, switch (dir) { case DMA_TO_DEVICE: - ALT_CMO_OP(clean, vaddr, size, riscv_cbom_block_size); + ALT_CMO_OP(clean, vaddr, size, riscv_cbom_block_size, + dir, NON_COHERENT_SYNC_DMA_FOR_DEVICE); break; case DMA_FROM_DEVICE: - ALT_CMO_OP(clean, vaddr, size, riscv_cbom_block_size); + ALT_CMO_OP(clean, vaddr, size, riscv_cbom_block_size, + dir, NON_COHERENT_SYNC_DMA_FOR_DEVICE); break; case DMA_BIDIRECTIONAL: - ALT_CMO_OP(flush, vaddr, size, riscv_cbom_block_size); + ALT_CMO_OP(flush, vaddr, size, riscv_cbom_block_size, + dir, NON_COHERENT_SYNC_DMA_FOR_DEVICE); break; default: break; @@ -42,7 +45,8 @@ void arch_sync_dma_for_cpu(phys_addr_t paddr, size_t size, break; case DMA_FROM_DEVICE: case DMA_BIDIRECTIONAL: - ALT_CMO_OP(flush, vaddr, size, riscv_cbom_block_size); + ALT_CMO_OP(flush, vaddr, size, riscv_cbom_block_size, + dir, NON_COHERENT_SYNC_DMA_FOR_CPU); break; default: break; @@ -53,7 +57,8 @@ void arch_dma_prep_coherent(struct page *page, size_t size) { void *flush_addr = page_address(page); - ALT_CMO_OP(flush, flush_addr, size, riscv_cbom_block_size); + ALT_CMO_OP(flush, flush_addr, size, riscv_cbom_block_size, + 0, NON_COHERENT_DMA_PREP); } void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size, -- 2.25.1
WARNING: multiple messages have this Message-ID (diff)
From: Prabhakar <prabhakar.csengg@gmail.com> To: Paul Walmsley <paul.walmsley@sifive.com>, Palmer Dabbelt <palmer@dabbelt.com>, Albert Ou <aou@eecs.berkeley.edu>, Geert Uytterhoeven <geert+renesas@glider.be>, Magnus Damm <magnus.damm@gmail.com>, Heiko Stuebner <heiko@sntech.de>, Conor Dooley <conor.dooley@microchip.com>, Samuel Holland <samuel@sholland.org>, Guo Ren <guoren@kernel.org>, Rob Herring <robh+dt@kernel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org> Cc: Jisheng Zhang <jszhang@kernel.org>, Atish Patra <atishp@rivosinc.com>, Anup Patel <apatel@ventanamicro.com>, Andrew Jones <ajones@ventanamicro.com>, Nathan Chancellor <nathan@kernel.org>, Philipp Tomsich <philipp.tomsich@vrull.eu>, devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org, Prabhakar <prabhakar.csengg@gmail.com>, Biju Das <biju.das.jz@bp.renesas.com>, Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Subject: [PATCH v5 4/6] riscv: mm: dma-noncoherent: Pass direction and operation to ALT_CMO_OP() Date: Mon, 12 Dec 2022 11:55:03 +0000 [thread overview] Message-ID: <20221212115505.36770-5-prabhakar.mahadev-lad.rj@bp.renesas.com> (raw) In-Reply-To: <20221212115505.36770-1-prabhakar.mahadev-lad.rj@bp.renesas.com> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Pass direction and operation to ALT_CMO_OP() macro. Vendors might want to perform different operations based on the direction and callbacks (arch_sync_dma_for_device/arch_sync_dma_for_cpu/ arch_dma_prep_coherent) so to handle such cases pass the direction and operation to ALT_CMO_OP() macro. This is in preparation for adding errata for the Andes CPU core. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> --- v4 -> v5 * Updated commit message. RFC v3 -> v4 * New patch --- arch/riscv/include/asm/cacheflush.h | 4 ++++ arch/riscv/include/asm/errata_list.h | 8 ++++++-- arch/riscv/mm/dma-noncoherent.c | 15 ++++++++++----- 3 files changed, 20 insertions(+), 7 deletions(-) diff --git a/arch/riscv/include/asm/cacheflush.h b/arch/riscv/include/asm/cacheflush.h index 03e3b95ae6da..e22019668b9e 100644 --- a/arch/riscv/include/asm/cacheflush.h +++ b/arch/riscv/include/asm/cacheflush.h @@ -8,6 +8,10 @@ #include <linux/mm.h> +#define NON_COHERENT_SYNC_DMA_FOR_DEVICE 0 +#define NON_COHERENT_SYNC_DMA_FOR_CPU 1 +#define NON_COHERENT_DMA_PREP 2 + static inline void local_flush_icache_all(void) { asm volatile ("fence.i" ::: "memory"); diff --git a/arch/riscv/include/asm/errata_list.h b/arch/riscv/include/asm/errata_list.h index 2ba7e6e74540..48e899a8e7a9 100644 --- a/arch/riscv/include/asm/errata_list.h +++ b/arch/riscv/include/asm/errata_list.h @@ -124,7 +124,7 @@ asm volatile(ALTERNATIVE( \ #define THEAD_flush_A0 ".long 0x0275000b" #define THEAD_SYNC_S ".long 0x0190000b" -#define ALT_CMO_OP(_op, _start, _size, _cachesize) \ +#define ALT_CMO_OP(_op, _start, _size, _cachesize, _dir, _ops) \ asm volatile(ALTERNATIVE_2( \ __nops(6), \ "mv a0, %1\n\t" \ @@ -146,7 +146,11 @@ asm volatile(ALTERNATIVE_2( \ ERRATA_THEAD_CMO, CONFIG_ERRATA_THEAD_CMO) \ : : "r"(_cachesize), \ "r"((unsigned long)(_start) & ~((_cachesize) - 1UL)), \ - "r"((unsigned long)(_start) + (_size)) \ + "r"((unsigned long)(_start) + (_size)), \ + "r"((unsigned long)(_start)), \ + "r"((unsigned long)(_size)), \ + "r"((unsigned long)(_dir)), \ + "r"((unsigned long)(_ops)) \ : "a0") #define THEAD_C9XX_RV_IRQ_PMU 17 diff --git a/arch/riscv/mm/dma-noncoherent.c b/arch/riscv/mm/dma-noncoherent.c index d919efab6eba..e2b82034f504 100644 --- a/arch/riscv/mm/dma-noncoherent.c +++ b/arch/riscv/mm/dma-noncoherent.c @@ -19,13 +19,16 @@ void arch_sync_dma_for_device(phys_addr_t paddr, size_t size, switch (dir) { case DMA_TO_DEVICE: - ALT_CMO_OP(clean, vaddr, size, riscv_cbom_block_size); + ALT_CMO_OP(clean, vaddr, size, riscv_cbom_block_size, + dir, NON_COHERENT_SYNC_DMA_FOR_DEVICE); break; case DMA_FROM_DEVICE: - ALT_CMO_OP(clean, vaddr, size, riscv_cbom_block_size); + ALT_CMO_OP(clean, vaddr, size, riscv_cbom_block_size, + dir, NON_COHERENT_SYNC_DMA_FOR_DEVICE); break; case DMA_BIDIRECTIONAL: - ALT_CMO_OP(flush, vaddr, size, riscv_cbom_block_size); + ALT_CMO_OP(flush, vaddr, size, riscv_cbom_block_size, + dir, NON_COHERENT_SYNC_DMA_FOR_DEVICE); break; default: break; @@ -42,7 +45,8 @@ void arch_sync_dma_for_cpu(phys_addr_t paddr, size_t size, break; case DMA_FROM_DEVICE: case DMA_BIDIRECTIONAL: - ALT_CMO_OP(flush, vaddr, size, riscv_cbom_block_size); + ALT_CMO_OP(flush, vaddr, size, riscv_cbom_block_size, + dir, NON_COHERENT_SYNC_DMA_FOR_CPU); break; default: break; @@ -53,7 +57,8 @@ void arch_dma_prep_coherent(struct page *page, size_t size) { void *flush_addr = page_address(page); - ALT_CMO_OP(flush, flush_addr, size, riscv_cbom_block_size); + ALT_CMO_OP(flush, flush_addr, size, riscv_cbom_block_size, + 0, NON_COHERENT_DMA_PREP); } void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size, -- 2.25.1 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv
next prev parent reply other threads:[~2022-12-12 11:55 UTC|newest] Thread overview: 132+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-12-12 11:54 [PATCH v5 0/6] AX45MP: Add support to non-coherent DMA Prabhakar 2022-12-12 11:54 ` Prabhakar 2022-12-12 11:55 ` [PATCH v5 1/6] riscv: asm: alternative-macros: Introduce ALTERNATIVE_3() macro Prabhakar 2022-12-12 11:55 ` Prabhakar 2022-12-12 12:32 ` Heiko Stuebner 2022-12-12 12:32 ` Heiko Stuebner 2022-12-13 17:21 ` Geert Uytterhoeven 2022-12-13 17:21 ` Geert Uytterhoeven 2022-12-13 17:49 ` Lad, Prabhakar 2022-12-13 17:49 ` Lad, Prabhakar 2022-12-14 14:34 ` Andrew Jones 2022-12-14 14:34 ` Andrew Jones 2022-12-17 21:41 ` Conor Dooley 2022-12-17 21:41 ` Conor Dooley 2022-12-19 11:15 ` Lad, Prabhakar 2022-12-19 11:15 ` Lad, Prabhakar 2022-12-19 16:22 ` Conor Dooley 2022-12-19 16:22 ` Conor Dooley 2022-12-19 16:24 ` Lad, Prabhakar 2022-12-19 16:24 ` Lad, Prabhakar 2022-12-12 11:55 ` [PATCH v5 2/6] riscv: asm: vendorid_list: Add Andes Technology to the vendors list Prabhakar 2022-12-12 11:55 ` Prabhakar 2022-12-12 11:55 ` [PATCH v5 3/6] riscv: errata: Add Andes alternative ports Prabhakar 2022-12-12 11:55 ` Prabhakar 2022-12-17 21:19 ` Conor Dooley 2022-12-17 21:19 ` Conor Dooley 2022-12-19 11:19 ` Lad, Prabhakar 2022-12-19 11:19 ` Lad, Prabhakar 2022-12-19 16:20 ` Conor Dooley 2022-12-19 16:20 ` Conor Dooley 2022-12-21 0:31 ` Lad, Prabhakar 2022-12-21 0:31 ` Lad, Prabhakar 2022-12-12 11:55 ` Prabhakar [this message] 2022-12-12 11:55 ` [PATCH v5 4/6] riscv: mm: dma-noncoherent: Pass direction and operation to ALT_CMO_OP() Prabhakar 2022-12-13 17:14 ` Geert Uytterhoeven 2022-12-13 17:14 ` Geert Uytterhoeven 2022-12-13 17:57 ` Lad, Prabhakar 2022-12-13 17:57 ` Lad, Prabhakar 2022-12-17 20:52 ` Conor Dooley 2022-12-17 20:52 ` Conor Dooley 2022-12-19 11:21 ` Lad, Prabhakar 2022-12-19 11:21 ` Lad, Prabhakar 2022-12-12 11:55 ` [PATCH v5 5/6] dt-bindings: cache: r9a07g043f-l2-cache: Add DT binding documentation for L2 cache controller Prabhakar 2022-12-12 11:55 ` Prabhakar 2022-12-12 17:28 ` Rob Herring 2022-12-12 17:28 ` Rob Herring 2022-12-12 11:55 ` [PATCH v5 6/6] soc: renesas: Add L2 cache management for RZ/Five SoC Prabhakar 2022-12-12 11:55 ` Prabhakar 2022-12-15 10:34 ` Geert Uytterhoeven 2022-12-15 10:34 ` Geert Uytterhoeven 2022-12-15 11:03 ` Lad, Prabhakar 2022-12-15 11:03 ` Lad, Prabhakar 2022-12-15 11:10 ` Geert Uytterhoeven 2022-12-15 11:10 ` Geert Uytterhoeven 2022-12-15 17:46 ` Lad, Prabhakar 2022-12-15 17:46 ` Lad, Prabhakar 2022-12-15 19:54 ` Conor Dooley 2022-12-15 19:54 ` Conor Dooley 2022-12-15 20:17 ` Geert Uytterhoeven 2022-12-15 20:17 ` Geert Uytterhoeven 2022-12-15 20:32 ` Conor Dooley 2022-12-15 20:32 ` Conor Dooley 2022-12-15 21:40 ` Palmer Dabbelt 2022-12-15 21:40 ` Palmer Dabbelt 2022-12-16 7:02 ` Christoph Hellwig 2022-12-16 7:02 ` Christoph Hellwig 2022-12-16 16:32 ` Palmer Dabbelt 2022-12-16 16:32 ` Palmer Dabbelt 2022-12-16 20:04 ` Arnd Bergmann 2022-12-16 20:04 ` Arnd Bergmann 2022-12-17 22:52 ` Conor Dooley 2022-12-17 22:52 ` Conor Dooley 2022-12-19 12:43 ` Lad, Prabhakar 2022-12-19 12:43 ` Lad, Prabhakar 2022-12-19 16:08 ` Conor Dooley 2022-12-19 16:08 ` Conor Dooley 2022-12-29 14:05 ` Arnd Bergmann 2022-12-29 14:05 ` Arnd Bergmann 2022-12-29 14:42 ` Conor Dooley 2022-12-29 14:42 ` Conor Dooley 2023-01-03 21:03 ` [RFC v5.1 0/9] Generic function based cache management operations (was Re: [PATCH v5 6/6] soc: renesas: Add L2 cache management for RZ/Five SoC) Conor Dooley 2023-01-03 21:03 ` Conor Dooley 2023-01-03 21:03 ` [RFC v5.1 1/9] riscv: asm: alternative-macros: Introduce ALTERNATIVE_3() macro Conor Dooley 2023-01-03 21:03 ` Conor Dooley 2023-01-03 21:03 ` [RFC v5.1 2/9] riscv: asm: vendorid_list: Add Andes Technology to the vendors list Conor Dooley 2023-01-03 21:03 ` Conor Dooley 2023-01-03 21:03 ` [RFC v5.1 3/9] riscv: errata: Add Andes alternative ports Conor Dooley 2023-01-03 21:03 ` Conor Dooley 2023-01-03 21:03 ` [RFC v5.1 4/9] riscv: mm: dma-noncoherent: Pass direction and operation to ALT_CMO_OP() Conor Dooley 2023-01-03 21:03 ` Conor Dooley 2023-01-03 21:03 ` [RFC v5.1 5/9] dt-bindings: cache: r9a07g043f-l2-cache: Add DT binding documentation for L2 cache controller Conor Dooley 2023-01-03 21:03 ` Conor Dooley 2023-01-03 21:03 ` [RFC v5.1 6/9] cache,soc: Move SiFive CCache driver & create drivers/cache Conor Dooley 2023-01-03 21:03 ` Conor Dooley 2023-01-04 9:50 ` Ben Dooks 2023-01-04 9:50 ` Ben Dooks 2023-01-04 10:18 ` Conor Dooley 2023-01-04 10:18 ` Conor Dooley 2023-01-03 21:03 ` [RFC v5.1 7/9] RISC-V: create a function based cache management interface Conor Dooley 2023-01-03 21:03 ` Conor Dooley 2023-01-03 21:04 ` [RFC v5.1 8/9] soc: renesas: Add L2 cache management for RZ/Five SoC Conor Dooley 2023-01-03 21:04 ` Conor Dooley 2023-01-03 21:04 ` [RFC v5.1 9/9] [DON'T APPLY] cache: sifive-ccache: add cache flushing capability Conor Dooley 2023-01-03 21:04 ` Conor Dooley 2023-01-03 21:25 ` Palmer Dabbelt 2023-01-03 21:25 ` Palmer Dabbelt 2023-01-03 21:28 ` Arnd Bergmann 2023-01-03 21:28 ` Arnd Bergmann 2023-01-04 0:00 ` Conor Dooley 2023-01-04 0:00 ` Conor Dooley 2023-01-04 8:17 ` Arnd Bergmann 2023-01-04 8:17 ` Arnd Bergmann 2023-01-04 9:23 ` Conor Dooley 2023-01-04 9:23 ` Conor Dooley 2023-01-04 10:19 ` Arnd Bergmann 2023-01-04 10:19 ` Arnd Bergmann 2023-01-04 11:56 ` Conor Dooley 2023-01-04 11:56 ` Conor Dooley 2023-01-04 12:18 ` Arnd Bergmann 2023-01-04 12:18 ` Arnd Bergmann 2023-01-04 13:20 ` Conor Dooley 2023-01-04 13:20 ` Conor Dooley 2023-01-04 14:15 ` Arnd Bergmann 2023-01-04 14:15 ` Arnd Bergmann 2023-01-04 9:45 ` Ben Dooks 2023-01-04 9:45 ` Ben Dooks 2023-01-04 9:57 ` Conor Dooley 2023-01-04 9:57 ` Conor Dooley 2022-12-17 21:35 ` [PATCH v5 6/6] soc: renesas: Add L2 cache management for RZ/Five SoC Conor Dooley 2022-12-17 21:35 ` Conor Dooley 2022-12-28 3:16 ` Samuel Holland 2022-12-28 3:16 ` Samuel Holland
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