From patchwork Thu May 21 00:34:31 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Serge Semin X-Patchwork-Id: 200241 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A5A17C433E0 for ; Thu, 21 May 2020 00:35:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 814E320758 for ; Thu, 21 May 2020 00:35:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726785AbgEUAe7 (ORCPT ); Wed, 20 May 2020 20:34:59 -0400 Received: from mail.baikalelectronics.com ([87.245.175.226]:32910 "EHLO mail.baikalelectronics.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726819AbgEUAe4 (ORCPT ); Wed, 20 May 2020 20:34:56 -0400 Received: from localhost (unknown [127.0.0.1]) by mail.baikalelectronics.ru (Postfix) with ESMTP id 26E0B8030779; Thu, 21 May 2020 00:34:53 +0000 (UTC) X-Virus-Scanned: amavisd-new at baikalelectronics.ru Received: from mail.baikalelectronics.ru ([127.0.0.1]) by localhost (mail.baikalelectronics.ru [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id OkM-bCxOefvm; Thu, 21 May 2020 03:34:52 +0300 (MSK) From: Serge Semin To: Thomas Bogendoerfer , Rob Herring CC: Serge Semin , Serge Semin , Rob Herring , Alexey Malahov , Paul Burton , Ralf Baechle , Arnd Bergmann , , , Subject: [PATCH v3 02/14] dt-bindings: bus: Add MIPS CDMM controller Date: Thu, 21 May 2020 03:34:31 +0300 Message-ID: <20200521003443.11385-3-Sergey.Semin@baikalelectronics.ru> In-Reply-To: <20200521003443.11385-1-Sergey.Semin@baikalelectronics.ru> References: <20200521003443.11385-1-Sergey.Semin@baikalelectronics.ru> MIME-Version: 1.0 X-ClientProxiedBy: MAIL.baikal.int (192.168.51.25) To mail (192.168.51.25) Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org It's a Common Device Memory Map controller embedded into the MIPS IP cores, which dts node is supposed to have compatible and reg properties. Signed-off-by: Serge Semin Reviewed-by: Rob Herring Cc: Alexey Malahov Cc: Thomas Bogendoerfer Cc: Paul Burton Cc: Ralf Baechle Cc: Arnd Bergmann Cc: linux-mips@vger.kernel.org --- Changelog v2: - Lowercase the example hex'es. --- .../bindings/bus/mti,mips-cdmm.yaml | 35 +++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 Documentation/devicetree/bindings/bus/mti,mips-cdmm.yaml diff --git a/Documentation/devicetree/bindings/bus/mti,mips-cdmm.yaml b/Documentation/devicetree/bindings/bus/mti,mips-cdmm.yaml new file mode 100644 index 000000000000..d28d65ae57b2 --- /dev/null +++ b/Documentation/devicetree/bindings/bus/mti,mips-cdmm.yaml @@ -0,0 +1,35 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/bus/mti,mips-cdmm.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: MIPS Common Device Memory Map + +description: | + Defines a location of the MIPS Common Device Memory Map registers. + +maintainers: + - James Hogan + +properties: + compatible: + const: mti,mips-cdmm + + reg: + description: | + Base address and size of an unoccupied memory region, which will be + used to map the MIPS CDMM registers block. + maxItems: 1 + +required: + - compatible + - reg + +examples: + - | + cdmm@1bde8000 { + compatible = "mti,mips-cdmm"; + reg = <0 0x1bde8000 0 0x8000>; + }; +... From patchwork Thu May 21 00:34:32 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Serge Semin X-Patchwork-Id: 200235 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B6DFEC433E3 for ; Thu, 21 May 2020 00:36:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 963A52078C for ; Thu, 21 May 2020 00:36:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727046AbgEUAf0 (ORCPT ); Wed, 20 May 2020 20:35:26 -0400 Received: from mail.baikalelectronics.com ([87.245.175.226]:32940 "EHLO mail.baikalelectronics.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726819AbgEUAfY (ORCPT ); Wed, 20 May 2020 20:35:24 -0400 Received: from localhost (unknown [127.0.0.1]) by mail.baikalelectronics.ru (Postfix) with ESMTP id 9836180307C7; Thu, 21 May 2020 00:35:15 +0000 (UTC) X-Virus-Scanned: amavisd-new at baikalelectronics.ru Received: from mail.baikalelectronics.ru ([127.0.0.1]) by localhost (mail.baikalelectronics.ru [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id QoM91emHazri; Thu, 21 May 2020 03:35:13 +0300 (MSK) From: Serge Semin To: Thomas Bogendoerfer CC: Serge Semin , Serge Semin , Alexey Malahov , Paul Burton , Ralf Baechle , Arnd Bergmann , Rob Herring , , Thomas Bogendoerfer , Jiaxun Yang , Alexander Lobakin , Huacai Chen , Daniel Silsby , Ard Biesheuvel , Herbert Xu , Cedric Hombourger , Thomas Gleixner , Sebastian Andrzej Siewior , Ingo Molnar , =?utf-8?q?Philippe_Mathieu-Dau?= =?utf-8?b?ZMOp?= , Paul Cercueil , Guenter Roeck , Zhou Yanjie , Masahiro Yamada , Greg Kroah-Hartman , Allison Randal , "Peter Zijlstra (Intel)" , Jessica Yu , =?utf-8?b?5ZGo55Cw5p2wIChaaG91IFlhbmppZSk=?= , YunQiang Su , Oleksij Rempel , Kamal Dasu , , , Subject: [PATCH v3 03/14] mips: Add MIPS Release 5 support Date: Thu, 21 May 2020 03:34:32 +0300 Message-ID: <20200521003443.11385-4-Sergey.Semin@baikalelectronics.ru> In-Reply-To: <20200521003443.11385-1-Sergey.Semin@baikalelectronics.ru> References: <20200521003443.11385-1-Sergey.Semin@baikalelectronics.ru> MIME-Version: 1.0 X-ClientProxiedBy: MAIL.baikal.int (192.168.51.25) To mail (192.168.51.25) Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org There are five MIPS32/64 architecture releases currently available: from 1 to 6 except fourth one, which was intentionally skipped. Three of them can be called as major: 1st, 2nd and 6th, that not only have some system level alterations, but also introduced significant core/ISA level updates. The rest of the MIPS architecture releases are minor. Even though they don't have as much ISA/system/core level changes as the major ones with respect to the previous releases, they still provide a set of updates (I'd say they were intended to be the intermediate releases before a major one) that might be useful for the kernel and user-level code, when activated by the kernel or compiler. In particular the following features were introduced or ended up being available at/after MIPS32/64 Release 5 architecture: + the last release of the misaligned memory access instructions, + virtualisation - VZ ASE - is optional component of the arch, + SIMD - MSA ASE - is optional component of the arch, + DSP ASE is optional component of the arch, + CP0.Status.FR=1 for CP1.FIR.F64=1 (pure 64-bit FPU general registers) must be available if FPU is implemented, + CP1.FIR.Has2008 support is required so CP1.FCSR.{ABS2008,NAN2008} bits are available. + UFR/UNFR aliases to access CP0.Status.FR from user-space by means of ctc1/cfc1 instructions (enabled by CP0.Config5.UFR), + CP0.COnfig5.LLB=1 and eretnc instruction are implemented to without accidentally clearing LL-bit when returning from an interrupt, exception, or error trap, + XPA feature together with extended versions of CPx registers is introduced, which needs to have mfhc0/mthc0 instructions available. So due to these changes GNU GCC provides an extended instructions set support for MIPS32/64 Release 5 by default like eretnc/mfhc0/mthc0. Even though the architecture alteration isn't that big, it still worth to be taken into account by the kernel software. Finally we can't deny that some optimization/limitations might be found in future and implemented on some level in kernel or compiler. In this case having even intermediate MIPS architecture releases support would be more than useful. So the most of the changes provided by this commit can be split into either compile- or runtime configs related. The compile-time related changes are caused by adding the new CONFIG_CPU_MIPS32_R5/CONFIG_CPU_MIPSR5 configs and concern the code activating MIPSR2 or MIPSR6 already implemented features (like eretnc/LLbit, mthc0/mfhc0). In addition CPU_HAS_MSA can be now freely enabled for MIPS32/64 release 5 based platforms as this is done for CPU_MIPS32_R6 CPUs. The runtime changes concerns the features which are handled with respect to the MIPS ISA revision detected at run-time by means of CP0.Config.{AT,AR} bits. Alas these fields can be used to detect either r1 or r2 or r6 releases. But since we know which CPUs in fact support the R5 arch, we can manually set MIPS_CPU_ISA_M32R5/MIPS_CPU_ISA_M64R5 bit of c->isa_level and then use cpu_has_mips32r5/cpu_has_mips64r5 where it's appropriate. Since XPA/EVA provide too complex alterationss and to have them used with MIPS32 Release 2 charged kernels (for compatibility with current platform configs) they are left to be setup as a separate kernel configs. Co-developed-by: Alexey Malahov Signed-off-by: Alexey Malahov Signed-off-by: Serge Semin Cc: Thomas Bogendoerfer Cc: Paul Burton Cc: Ralf Baechle Cc: Arnd Bergmann Cc: Rob Herring Cc: devicetree@vger.kernel.org --- Changelog v3: - Together with MIPS32 add MIPS64 Release 5 support. --- arch/mips/Kconfig | 56 +++++++++++++++++++++++++--- arch/mips/Makefile | 2 + arch/mips/include/asm/asmmacro.h | 18 +++++---- arch/mips/include/asm/compiler.h | 5 +++ arch/mips/include/asm/cpu-features.h | 27 ++++++++++---- arch/mips/include/asm/cpu-info.h | 2 +- arch/mips/include/asm/cpu-type.h | 7 +++- arch/mips/include/asm/cpu.h | 10 +++-- arch/mips/include/asm/fpu.h | 4 +- arch/mips/include/asm/hazards.h | 8 ++-- arch/mips/include/asm/stackframe.h | 2 +- arch/mips/include/asm/switch_to.h | 8 ++-- arch/mips/include/asm/vermagic.h | 4 ++ arch/mips/kernel/cpu-probe.c | 17 +++++++++ arch/mips/kernel/entry.S | 6 +-- arch/mips/kernel/proc.c | 4 ++ arch/mips/kernel/r4k_fpu.S | 14 +++---- arch/mips/kvm/vz.c | 6 +-- arch/mips/lib/csum_partial.S | 6 ++- arch/mips/mm/c-r4k.c | 7 ++-- arch/mips/mm/sc-mips.c | 7 ++-- 21 files changed, 163 insertions(+), 57 deletions(-) diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 690718b3701a..ec3cd300981b 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -1580,6 +1580,21 @@ config CPU_MIPS32_R2 specific type of processor in your system, choose those that one otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system. +config CPU_MIPS32_R5 + bool "MIPS32 Release 5" + depends on SYS_HAS_CPU_MIPS32_R5 + select CPU_HAS_PREFETCH + select CPU_SUPPORTS_32BIT_KERNEL + select CPU_SUPPORTS_HIGHMEM + select CPU_SUPPORTS_MSA + select HAVE_KVM + select MIPS_O32_FP64_SUPPORT + help + Choose this option to build a kernel for release 5 or later of the + MIPS32 architecture. New MIPS processors, starting with the Warrior + family, are based on a MIPS32r5 processor. If you own an older + processor, you probably need to select MIPS32r1 or MIPS32r2 instead. + config CPU_MIPS32_R6 bool "MIPS32 Release 6" depends on SYS_HAS_CPU_MIPS32_R6 @@ -1632,6 +1647,23 @@ config CPU_MIPS64_R2 specific type of processor in your system, choose those that one otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system. +config CPU_MIPS64_R5 + bool "MIPS64 Release 5" + depends on SYS_HAS_CPU_MIPS64_R5 + select CPU_HAS_PREFETCH + select CPU_SUPPORTS_32BIT_KERNEL + select CPU_SUPPORTS_64BIT_KERNEL + select CPU_SUPPORTS_HIGHMEM + select CPU_SUPPORTS_HUGEPAGES + select CPU_SUPPORTS_MSA + select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32 + select HAVE_KVM + help + Choose this option to build a kernel for release 5 or later of the + MIPS64 architecture. This is a intermediate MIPS architecture + release partly implementing release 6 features. Though there is no + any hardware known to be based on this release. + config CPU_MIPS64_R6 bool "MIPS64 Release 6" depends on SYS_HAS_CPU_MIPS64_R6 @@ -1826,7 +1858,7 @@ endchoice config CPU_MIPS32_3_5_FEATURES bool "MIPS32 Release 3.5 Features" depends on SYS_HAS_CPU_MIPS32_R3_5 - depends on CPU_MIPS32_R2 || CPU_MIPS32_R6 + depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_MIPS32_R6 help Choose this option to build a kernel for release 2 or later of the MIPS32 architecture including features from the 3.5 release such as @@ -1846,7 +1878,7 @@ config CPU_MIPS32_3_5_EVA config CPU_MIPS32_R5_FEATURES bool "MIPS32 Release 5 Features" depends on SYS_HAS_CPU_MIPS32_R5 - depends on CPU_MIPS32_R2 + depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 help Choose this option to build a kernel for release 2 or later of the MIPS32 architecture including features from release 5 such as @@ -2084,11 +2116,13 @@ endmenu # config CPU_MIPS32 bool - default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6 + default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R5 || \ + CPU_MIPS32_R6 config CPU_MIPS64 bool - default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6 + default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R5 || \ + CPU_MIPS64_R6 # # These indicate the revision of the architecture @@ -2104,6 +2138,13 @@ config CPU_MIPSR2 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN select MIPS_SPRAM +config CPU_MIPSR5 + bool + default y if CPU_MIPS32_R5 || CPU_MIPS64_R5 + select CPU_HAS_RIXI + select CPU_HAS_DIEI if !CPU_DIEI_BROKEN + select MIPS_SPRAM + config CPU_MIPSR6 bool default y if CPU_MIPS32_R6 || CPU_MIPS64_R6 @@ -2118,6 +2159,7 @@ config TARGET_ISA_REV int default 1 if CPU_MIPSR1 default 2 if CPU_MIPSR2 + default 5 if CPU_MIPSR5 default 6 if CPU_MIPSR6 default 0 help @@ -2707,7 +2749,11 @@ config NEED_PER_CPU_EMBED_FIRST_CHUNK config RELOCATABLE bool "Relocatable kernel" - depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC) + depends on SYS_SUPPORTS_RELOCATABLE + depends on CPU_MIPS32_R2 || CPU_MIPS64_R2 || \ + CPU_MIPS32_R5 || CPU_MIPS64_R5 || \ + CPU_MIPS32_R6 || CPU_MIPS64_R6 || \ + CAVIUM_OCTEON_SOC help This builds a kernel image that retains relocation information so it can be loaded someplace besides the default 1MB. diff --git a/arch/mips/Makefile b/arch/mips/Makefile index e1c44aed8156..08c8d93d61ba 100644 --- a/arch/mips/Makefile +++ b/arch/mips/Makefile @@ -171,9 +171,11 @@ cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap cflags-$(CONFIG_CPU_MIPS32_R1) += -march=mips32 -Wa,--trap cflags-$(CONFIG_CPU_MIPS32_R2) += -march=mips32r2 -Wa,--trap +cflags-$(CONFIG_CPU_MIPS32_R5) += -march=mips32r5 -Wa,--trap -modd-spreg cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap -modd-spreg cflags-$(CONFIG_CPU_MIPS64_R1) += -march=mips64 -Wa,--trap cflags-$(CONFIG_CPU_MIPS64_R2) += -march=mips64r2 -Wa,--trap +cflags-$(CONFIG_CPU_MIPS64_R5) += -march=mips64r5 -Wa,--trap cflags-$(CONFIG_CPU_MIPS64_R6) += -march=mips64r6 -Wa,--trap cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=r5000) \ diff --git a/arch/mips/include/asm/asmmacro.h b/arch/mips/include/asm/asmmacro.h index 655f40ddb6d1..86f2323ebe6b 100644 --- a/arch/mips/include/asm/asmmacro.h +++ b/arch/mips/include/asm/asmmacro.h @@ -44,7 +44,8 @@ .endm #endif -#if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR6) +#if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR5) || \ + defined(CONFIG_CPU_MIPSR6) .macro local_irq_enable reg=t0 ei irq_enable_hazard @@ -54,7 +55,7 @@ di irq_disable_hazard .endm -#else +#else /* !CONFIG_CPU_MIPSR2 && !CONFIG_CPU_MIPSR5 && !CONFIG_CPU_MIPSR6 */ .macro local_irq_enable reg=t0 mfc0 \reg, CP0_STATUS ori \reg, \reg, 1 @@ -79,7 +80,7 @@ sw \reg, TI_PRE_COUNT($28) #endif .endm -#endif /* CONFIG_CPU_MIPSR2 */ +#endif /* !CONFIG_CPU_MIPSR2 && !CONFIG_CPU_MIPSR5 && !CONFIG_CPU_MIPSR6 */ .macro fpu_save_16even thread tmp=t0 .set push @@ -131,7 +132,7 @@ .macro fpu_save_double thread status tmp #if defined(CONFIG_64BIT) || defined(CONFIG_CPU_MIPSR2) || \ - defined(CONFIG_CPU_MIPSR6) + defined(CONFIG_CPU_MIPSR5) || defined(CONFIG_CPU_MIPSR6) sll \tmp, \status, 5 bgez \tmp, 10f fpu_save_16odd \thread @@ -190,7 +191,7 @@ .macro fpu_restore_double thread status tmp #if defined(CONFIG_64BIT) || defined(CONFIG_CPU_MIPSR2) || \ - defined(CONFIG_CPU_MIPSR6) + defined(CONFIG_CPU_MIPSR5) || defined(CONFIG_CPU_MIPSR6) sll \tmp, \status, 5 bgez \tmp, 10f # 16 register mode? @@ -200,16 +201,17 @@ fpu_restore_16even \thread \tmp .endm -#if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR6) +#if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR5) || \ + defined(CONFIG_CPU_MIPSR6) .macro _EXT rd, rs, p, s ext \rd, \rs, \p, \s .endm -#else /* !CONFIG_CPU_MIPSR2 || !CONFIG_CPU_MIPSR6 */ +#else /* !CONFIG_CPU_MIPSR2 && !CONFIG_CPU_MIPSR5 && !CONFIG_CPU_MIPSR6 */ .macro _EXT rd, rs, p, s srl \rd, \rs, \p andi \rd, \rd, (1 << \s) - 1 .endm -#endif /* !CONFIG_CPU_MIPSR2 || !CONFIG_CPU_MIPSR6 */ +#endif /* !CONFIG_CPU_MIPSR2 && !CONFIG_CPU_MIPSR5 && !CONFIG_CPU_MIPSR6 */ /* * Temporary until all gas have MT ASE support diff --git a/arch/mips/include/asm/compiler.h b/arch/mips/include/asm/compiler.h index f77e99f1722e..a2cb2d2b1c07 100644 --- a/arch/mips/include/asm/compiler.h +++ b/arch/mips/include/asm/compiler.h @@ -57,6 +57,11 @@ #define MIPS_ISA_ARCH_LEVEL MIPS_ISA_LEVEL #define MIPS_ISA_LEVEL_RAW mips64r6 #define MIPS_ISA_ARCH_LEVEL_RAW MIPS_ISA_LEVEL_RAW +#elif defined(CONFIG_CPU_MIPSR5) +#define MIPS_ISA_LEVEL "mips64r5" +#define MIPS_ISA_ARCH_LEVEL MIPS_ISA_LEVEL +#define MIPS_ISA_LEVEL_RAW mips64r5 +#define MIPS_ISA_ARCH_LEVEL_RAW MIPS_ISA_LEVEL_RAW #else /* MIPS64 is a superset of MIPS32 */ #define MIPS_ISA_LEVEL "mips64r2" diff --git a/arch/mips/include/asm/cpu-features.h b/arch/mips/include/asm/cpu-features.h index de44c92b1c1f..8ecd13e3c9c2 100644 --- a/arch/mips/include/asm/cpu-features.h +++ b/arch/mips/include/asm/cpu-features.h @@ -284,6 +284,9 @@ #ifndef cpu_has_mips32r2 # define cpu_has_mips32r2 __isa_range_or_flag(2, 6, MIPS_CPU_ISA_M32R2) #endif +#ifndef cpu_has_mips32r5 +# define cpu_has_mips32r5 __isa_range_or_flag(5, 6, MIPS_CPU_ISA_M32R5) +#endif #ifndef cpu_has_mips32r6 # define cpu_has_mips32r6 __isa_ge_or_flag(6, MIPS_CPU_ISA_M32R6) #endif @@ -293,6 +296,10 @@ #ifndef cpu_has_mips64r2 # define cpu_has_mips64r2 __isa_range_or_flag(2, 6, MIPS_CPU_ISA_M64R2) #endif +#ifndef cpu_has_mips64r5 +# define cpu_has_mips64r5 (cpu_has_64bits && \ + __isa_range_or_flag(5, 6, MIPS_CPU_ISA_M64R5)) +#endif #ifndef cpu_has_mips64r6 # define cpu_has_mips64r6 __isa_ge_and_flag(6, MIPS_CPU_ISA_M64R6) #endif @@ -313,19 +320,25 @@ (cpu_has_mips_3 | cpu_has_mips_4_5_64_r2_r6) #define cpu_has_mips_4_5_64_r2_r6 \ (cpu_has_mips_4_5 | cpu_has_mips64r1 | \ - cpu_has_mips_r2 | cpu_has_mips_r6) + cpu_has_mips_r2 | cpu_has_mips_r5 | \ + cpu_has_mips_r6) -#define cpu_has_mips32 (cpu_has_mips32r1 | cpu_has_mips32r2 | cpu_has_mips32r6) -#define cpu_has_mips64 (cpu_has_mips64r1 | cpu_has_mips64r2 | cpu_has_mips64r6) +#define cpu_has_mips32 (cpu_has_mips32r1 | cpu_has_mips32r2 | \ + cpu_has_mips32r5 | cpu_has_mips32r6) +#define cpu_has_mips64 (cpu_has_mips64r1 | cpu_has_mips64r2 | \ + cpu_has_mips64r5 | cpu_has_mips64r6) #define cpu_has_mips_r1 (cpu_has_mips32r1 | cpu_has_mips64r1) #define cpu_has_mips_r2 (cpu_has_mips32r2 | cpu_has_mips64r2) +#define cpu_has_mips_r5 (cpu_has_mips32r5 | cpu_has_mips64r5) #define cpu_has_mips_r6 (cpu_has_mips32r6 | cpu_has_mips64r6) #define cpu_has_mips_r (cpu_has_mips32r1 | cpu_has_mips32r2 | \ - cpu_has_mips32r6 | cpu_has_mips64r1 | \ - cpu_has_mips64r2 | cpu_has_mips64r6) + cpu_has_mips32r5 | cpu_has_mips32r6 | \ + cpu_has_mips64r1 | cpu_has_mips64r2 | \ + cpu_has_mips64r5 | cpu_has_mips64r6) -/* MIPSR2 and MIPSR6 have a lot of similarities */ -#define cpu_has_mips_r2_r6 (cpu_has_mips_r2 | cpu_has_mips_r6) +/* MIPSR2 - MIPSR6 have a lot of similarities */ +#define cpu_has_mips_r2_r6 (cpu_has_mips_r2 | cpu_has_mips_r5 | \ + cpu_has_mips_r6) /* * cpu_has_mips_r2_exec_hazard - return if IHB is required on current processor diff --git a/arch/mips/include/asm/cpu-info.h b/arch/mips/include/asm/cpu-info.h index ed7ffe4e63a3..bce3ea7fff7c 100644 --- a/arch/mips/include/asm/cpu-info.h +++ b/arch/mips/include/asm/cpu-info.h @@ -142,7 +142,7 @@ struct proc_cpuinfo_notifier_args { static inline unsigned int cpu_cluster(struct cpuinfo_mips *cpuinfo) { /* Optimisation for systems where multiple clusters aren't used */ - if (!IS_ENABLED(CONFIG_CPU_MIPSR6)) + if (!IS_ENABLED(CONFIG_CPU_MIPSR5) && !IS_ENABLED(CONFIG_CPU_MIPSR6)) return 0; return (cpuinfo->globalnumber & MIPS_GLOBALNUMBER_CLUSTER) >> diff --git a/arch/mips/include/asm/cpu-type.h b/arch/mips/include/asm/cpu-type.h index 49f0061a6051..75a7a382da09 100644 --- a/arch/mips/include/asm/cpu-type.h +++ b/arch/mips/include/asm/cpu-type.h @@ -51,13 +51,18 @@ static inline int __pure __get_cpu_type(const int cpu_type) case CPU_M14KEC: case CPU_INTERAPTIV: case CPU_PROAPTIV: - case CPU_P5600: +#endif + +#ifdef CONFIG_SYS_HAS_CPU_MIPS32_R5 case CPU_M5150: + case CPU_P5600: #endif #if defined(CONFIG_SYS_HAS_CPU_MIPS32_R2) || \ + defined(CONFIG_SYS_HAS_CPU_MIPS32_R5) || \ defined(CONFIG_SYS_HAS_CPU_MIPS32_R6) || \ defined(CONFIG_SYS_HAS_CPU_MIPS64_R2) || \ + defined(CONFIG_SYS_HAS_CPU_MIPS64_R5) || \ defined(CONFIG_SYS_HAS_CPU_MIPS64_R6) case CPU_QEMU_GENERIC: #endif diff --git a/arch/mips/include/asm/cpu.h b/arch/mips/include/asm/cpu.h index 216a22916740..2e2035a13a55 100644 --- a/arch/mips/include/asm/cpu.h +++ b/arch/mips/include/asm/cpu.h @@ -343,14 +343,16 @@ enum cpu_type_enum { #define MIPS_CPU_ISA_M32R2 0x00000020 #define MIPS_CPU_ISA_M64R1 0x00000040 #define MIPS_CPU_ISA_M64R2 0x00000080 -#define MIPS_CPU_ISA_M32R6 0x00000100 -#define MIPS_CPU_ISA_M64R6 0x00000200 +#define MIPS_CPU_ISA_M32R5 0x00000100 +#define MIPS_CPU_ISA_M64R5 0x00000200 +#define MIPS_CPU_ISA_M32R6 0x00000400 +#define MIPS_CPU_ISA_M64R6 0x00000800 #define MIPS_CPU_ISA_32BIT (MIPS_CPU_ISA_II | MIPS_CPU_ISA_M32R1 | \ - MIPS_CPU_ISA_M32R2 | MIPS_CPU_ISA_M32R6) + MIPS_CPU_ISA_M32R2 | MIPS_CPU_ISA_M32R5 | MIPS_CPU_ISA_M32R6) #define MIPS_CPU_ISA_64BIT (MIPS_CPU_ISA_III | MIPS_CPU_ISA_IV | \ MIPS_CPU_ISA_V | MIPS_CPU_ISA_M64R1 | MIPS_CPU_ISA_M64R2 | \ - MIPS_CPU_ISA_M64R6) + MIPS_CPU_ISA_M64R5 | MIPS_CPU_ISA_M64R6) /* * CPU Option encodings diff --git a/arch/mips/include/asm/fpu.h b/arch/mips/include/asm/fpu.h index 9476e0498d59..f0b37663fade 100644 --- a/arch/mips/include/asm/fpu.h +++ b/arch/mips/include/asm/fpu.h @@ -71,8 +71,8 @@ static inline int __enable_fpu(enum fpu_mode mode) goto fr_common; case FPU_64BIT: -#if !(defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR6) \ - || defined(CONFIG_64BIT)) +#if !(defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR5) || \ + defined(CONFIG_CPU_MIPSR6) || defined(CONFIG_64BIT)) /* we only have a 32-bit FPU */ return SIGFPE; #endif diff --git a/arch/mips/include/asm/hazards.h b/arch/mips/include/asm/hazards.h index a0b92205f933..f855478d12fa 100644 --- a/arch/mips/include/asm/hazards.h +++ b/arch/mips/include/asm/hazards.h @@ -22,8 +22,9 @@ /* * TLB hazards */ -#if (defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR6)) && \ - !defined(CONFIG_CPU_CAVIUM_OCTEON) && !defined(CONFIG_CPU_LOONGSON64) +#if (defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR5) || \ + defined(CONFIG_CPU_MIPSR6)) && \ + !defined(CONFIG_CPU_CAVIUM_OCTEON) && !defined(CONFIG_CPU_LOONGSON64) /* * MIPSR2 defines ehb for hazard avoidance @@ -278,7 +279,8 @@ do { \ #define __disable_fpu_hazard -#elif defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR6) +#elif defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR5) || \ + defined(CONFIG_CPU_MIPSR6) #define __enable_fpu_hazard \ ___ehb diff --git a/arch/mips/include/asm/stackframe.h b/arch/mips/include/asm/stackframe.h index 4d6ad907ae54..3e8d2aaf96af 100644 --- a/arch/mips/include/asm/stackframe.h +++ b/arch/mips/include/asm/stackframe.h @@ -424,7 +424,7 @@ .macro RESTORE_SP_AND_RET docfi=0 RESTORE_SP \docfi -#ifdef CONFIG_CPU_MIPSR6 +#if defined(CONFIG_CPU_MIPSR5) || defined(CONFIG_CPU_MIPSR6) eretnc #else .set push diff --git a/arch/mips/include/asm/switch_to.h b/arch/mips/include/asm/switch_to.h index 09cbe9042828..0b0a93bf83cd 100644 --- a/arch/mips/include/asm/switch_to.h +++ b/arch/mips/include/asm/switch_to.h @@ -67,11 +67,11 @@ do { \ #endif /* - * Clear LLBit during context switches on MIPSr6 such that eretnc can be used + * Clear LLBit during context switches on MIPSr5+ such that eretnc can be used * unconditionally when returning to userland in entry.S. */ -#define __clear_r6_hw_ll_bit() do { \ - if (cpu_has_mips_r6) \ +#define __clear_r5_hw_ll_bit() do { \ + if (cpu_has_mips_r5 || cpu_has_mips_r6) \ write_c0_lladdr(0); \ } while (0) @@ -129,7 +129,7 @@ do { \ } \ clear_c0_status(ST0_CU2); \ } \ - __clear_r6_hw_ll_bit(); \ + __clear_r5_hw_ll_bit(); \ __clear_software_ll_bit(); \ if (cpu_has_userlocal) \ write_c0_userlocal(task_thread_info(next)->tp_value); \ diff --git a/arch/mips/include/asm/vermagic.h b/arch/mips/include/asm/vermagic.h index 24dc3d35161c..01d0ea9e9e23 100644 --- a/arch/mips/include/asm/vermagic.h +++ b/arch/mips/include/asm/vermagic.h @@ -8,12 +8,16 @@ #define MODULE_PROC_FAMILY "MIPS32_R1 " #elif defined CONFIG_CPU_MIPS32_R2 #define MODULE_PROC_FAMILY "MIPS32_R2 " +#elif defined CONFIG_CPU_MIPS32_R5 +#define MODULE_PROC_FAMILY "MIPS32_R5 " #elif defined CONFIG_CPU_MIPS32_R6 #define MODULE_PROC_FAMILY "MIPS32_R6 " #elif defined CONFIG_CPU_MIPS64_R1 #define MODULE_PROC_FAMILY "MIPS64_R1 " #elif defined CONFIG_CPU_MIPS64_R2 #define MODULE_PROC_FAMILY "MIPS64_R2 " +#elif defined CONFIG_CPU_MIPS64_R5 +#define MODULE_PROC_FAMILY "MIPS64_R5 " #elif defined CONFIG_CPU_MIPS64_R6 #define MODULE_PROC_FAMILY "MIPS64_R6 " #elif defined CONFIG_CPU_R3000 diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c index f21a2304401f..cd4776faa9a5 100644 --- a/arch/mips/kernel/cpu-probe.c +++ b/arch/mips/kernel/cpu-probe.c @@ -92,6 +92,7 @@ static void cpu_set_fpu_2008(struct cpuinfo_mips *c) { if (c->isa_level & (MIPS_CPU_ISA_M32R1 | MIPS_CPU_ISA_M64R1 | MIPS_CPU_ISA_M32R2 | MIPS_CPU_ISA_M64R2 | + MIPS_CPU_ISA_M32R5 | MIPS_CPU_ISA_M64R5 | MIPS_CPU_ISA_M32R6 | MIPS_CPU_ISA_M64R6)) { unsigned long sr, fir, fcsr, fcsr0, fcsr1; @@ -172,6 +173,7 @@ static void cpu_set_nofpu_2008(struct cpuinfo_mips *c) case STRICT: if (c->isa_level & (MIPS_CPU_ISA_M32R1 | MIPS_CPU_ISA_M64R1 | MIPS_CPU_ISA_M32R2 | MIPS_CPU_ISA_M64R2 | + MIPS_CPU_ISA_M32R5 | MIPS_CPU_ISA_M64R5 | MIPS_CPU_ISA_M32R6 | MIPS_CPU_ISA_M64R6)) { c->options |= MIPS_CPU_NAN_2008 | MIPS_CPU_NAN_LEGACY; } else { @@ -263,9 +265,11 @@ static void cpu_set_nofpu_id(struct cpuinfo_mips *c) value = 0; if (c->isa_level & (MIPS_CPU_ISA_M32R1 | MIPS_CPU_ISA_M64R1 | MIPS_CPU_ISA_M32R2 | MIPS_CPU_ISA_M64R2 | + MIPS_CPU_ISA_M32R5 | MIPS_CPU_ISA_M64R5 | MIPS_CPU_ISA_M32R6 | MIPS_CPU_ISA_M64R6)) value |= MIPS_FPIR_D | MIPS_FPIR_S; if (c->isa_level & (MIPS_CPU_ISA_M32R2 | MIPS_CPU_ISA_M64R2 | + MIPS_CPU_ISA_M32R5 | MIPS_CPU_ISA_M64R5 | MIPS_CPU_ISA_M32R6 | MIPS_CPU_ISA_M64R6)) value |= MIPS_FPIR_F64 | MIPS_FPIR_L | MIPS_FPIR_W; if (c->options & MIPS_CPU_NAN_2008) @@ -286,6 +290,7 @@ static void cpu_set_fpu_opts(struct cpuinfo_mips *c) if (c->isa_level & (MIPS_CPU_ISA_M32R1 | MIPS_CPU_ISA_M64R1 | MIPS_CPU_ISA_M32R2 | MIPS_CPU_ISA_M64R2 | + MIPS_CPU_ISA_M32R5 | MIPS_CPU_ISA_M64R5 | MIPS_CPU_ISA_M32R6 | MIPS_CPU_ISA_M64R6)) { if (c->fpu_id & MIPS_FPIR_3D) c->ases |= MIPS_ASE_MIPS3D; @@ -532,6 +537,10 @@ static inline void cpu_probe_vmbits(struct cpuinfo_mips *c) static void set_isa(struct cpuinfo_mips *c, unsigned int isa) { switch (isa) { + case MIPS_CPU_ISA_M64R5: + c->isa_level |= MIPS_CPU_ISA_M32R5 | MIPS_CPU_ISA_M64R5; + set_elf_base_platform("mips64r5"); + /* fall through */ case MIPS_CPU_ISA_M64R2: c->isa_level |= MIPS_CPU_ISA_M32R2 | MIPS_CPU_ISA_M64R2; set_elf_base_platform("mips64r2"); @@ -563,6 +572,10 @@ static void set_isa(struct cpuinfo_mips *c, unsigned int isa) set_elf_base_platform("mips32r6"); /* Break here so we don't add incompatible ISAs */ break; + case MIPS_CPU_ISA_M32R5: + c->isa_level |= MIPS_CPU_ISA_M32R5; + set_elf_base_platform("mips32r5"); + /* fall through */ case MIPS_CPU_ISA_M32R2: c->isa_level |= MIPS_CPU_ISA_M32R2; set_elf_base_platform("mips32r2"); @@ -1751,6 +1764,10 @@ static inline void cpu_probe_mips(struct cpuinfo_mips *c, unsigned int cpu) spram_config(); switch (__get_cpu_type(c->cputype)) { + case CPU_M5150: + case CPU_P5600: + set_isa(c, MIPS_CPU_ISA_M32R5); + break; case CPU_I6500: c->options |= MIPS_CPU_SHARED_FTLB_ENTRIES; /* fall-through */ diff --git a/arch/mips/kernel/entry.S b/arch/mips/kernel/entry.S index 4849a48afc0f..4b896f5023ff 100644 --- a/arch/mips/kernel/entry.S +++ b/arch/mips/kernel/entry.S @@ -169,8 +169,8 @@ syscall_exit_work: jal syscall_trace_leave b resume_userspace -#if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR6) || \ - defined(CONFIG_MIPS_MT) +#if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR5) || \ + defined(CONFIG_CPU_MIPSR6) || defined(CONFIG_MIPS_MT) /* * MIPS32R2 Instruction Hazard Barrier - must be called @@ -183,4 +183,4 @@ LEAF(mips_ihb) nop END(mips_ihb) -#endif /* CONFIG_CPU_MIPSR2 or CONFIG_CPU_MIPSR6 or CONFIG_MIPS_MT */ +#endif /* CONFIG_CPU_MIPSR2 - CONFIG_CPU_MIPSR6 or CONFIG_MIPS_MT */ diff --git a/arch/mips/kernel/proc.c b/arch/mips/kernel/proc.c index f8d36710cd58..4184d641f05e 100644 --- a/arch/mips/kernel/proc.c +++ b/arch/mips/kernel/proc.c @@ -98,12 +98,16 @@ static int show_cpuinfo(struct seq_file *m, void *v) seq_printf(m, "%s", " mips32r1"); if (cpu_has_mips32r2) seq_printf(m, "%s", " mips32r2"); + if (cpu_has_mips32r5) + seq_printf(m, "%s", " mips32r5"); if (cpu_has_mips32r6) seq_printf(m, "%s", " mips32r6"); if (cpu_has_mips64r1) seq_printf(m, "%s", " mips64r1"); if (cpu_has_mips64r2) seq_printf(m, "%s", " mips64r2"); + if (cpu_has_mips64r5) + seq_printf(m, "%s", " mips64r5"); if (cpu_has_mips64r6) seq_printf(m, "%s", " mips64r6"); seq_printf(m, "\n"); diff --git a/arch/mips/kernel/r4k_fpu.S b/arch/mips/kernel/r4k_fpu.S index 59be5c812aa2..b91e91106475 100644 --- a/arch/mips/kernel/r4k_fpu.S +++ b/arch/mips/kernel/r4k_fpu.S @@ -41,7 +41,7 @@ LEAF(_save_fp) EXPORT_SYMBOL(_save_fp) #if defined(CONFIG_64BIT) || defined(CONFIG_CPU_MIPSR2) || \ - defined(CONFIG_CPU_MIPSR6) + defined(CONFIG_CPU_MIPSR5) || defined(CONFIG_CPU_MIPSR6) mfc0 t0, CP0_STATUS #endif fpu_save_double a0 t0 t1 # clobbers t1 @@ -53,7 +53,7 @@ EXPORT_SYMBOL(_save_fp) */ LEAF(_restore_fp) #if defined(CONFIG_64BIT) || defined(CONFIG_CPU_MIPSR2) || \ - defined(CONFIG_CPU_MIPSR6) + defined(CONFIG_CPU_MIPSR5) || defined(CONFIG_CPU_MIPSR6) mfc0 t0, CP0_STATUS #endif fpu_restore_double a0 t0 t1 # clobbers t1 @@ -103,10 +103,10 @@ LEAF(_save_fp_context) .set pop #if defined(CONFIG_64BIT) || defined(CONFIG_CPU_MIPSR2) || \ - defined(CONFIG_CPU_MIPSR6) + defined(CONFIG_CPU_MIPSR5) || defined(CONFIG_CPU_MIPSR6) .set push SET_HARDFLOAT -#ifdef CONFIG_CPU_MIPSR2 +#if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR5) .set mips32r2 .set fp=64 mfc0 t0, CP0_STATUS @@ -170,11 +170,11 @@ LEAF(_save_fp_context) LEAF(_restore_fp_context) EX lw t1, 0(a1) -#if defined(CONFIG_64BIT) || defined(CONFIG_CPU_MIPSR2) || \ - defined(CONFIG_CPU_MIPSR6) +#if defined(CONFIG_64BIT) || defined(CONFIG_CPU_MIPSR2) || \ + defined(CONFIG_CPU_MIPSR5) || defined(CONFIG_CPU_MIPSR6) .set push SET_HARDFLOAT -#ifdef CONFIG_CPU_MIPSR2 +#if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR5) .set mips32r2 .set fp=64 mfc0 t0, CP0_STATUS diff --git a/arch/mips/kvm/vz.c b/arch/mips/kvm/vz.c index dde20887a70d..66432b5ab229 100644 --- a/arch/mips/kvm/vz.c +++ b/arch/mips/kvm/vz.c @@ -2980,7 +2980,7 @@ static int kvm_vz_vcpu_setup(struct kvm_vcpu *vcpu) */ /* PageGrain */ - if (cpu_has_mips_r6) + if (cpu_has_mips_r5 || cpu_has_mips_r6) kvm_write_sw_gc0_pagegrain(cop0, PG_RIE | PG_XIE | PG_IEC); /* Wired */ if (cpu_has_mips_r6) @@ -2988,7 +2988,7 @@ static int kvm_vz_vcpu_setup(struct kvm_vcpu *vcpu) read_gc0_wired() & MIPSR6_WIRED_LIMIT); /* Status */ kvm_write_sw_gc0_status(cop0, ST0_BEV | ST0_ERL); - if (cpu_has_mips_r6) + if (cpu_has_mips_r5 || cpu_has_mips_r6) kvm_change_sw_gc0_status(cop0, ST0_FR, read_gc0_status()); /* IntCtl */ kvm_write_sw_gc0_intctl(cop0, read_gc0_intctl() & @@ -3086,7 +3086,7 @@ static int kvm_vz_vcpu_setup(struct kvm_vcpu *vcpu) } /* reset HTW registers */ - if (cpu_guest_has_htw && cpu_has_mips_r6) { + if (cpu_guest_has_htw && (cpu_has_mips_r5 || cpu_has_mips_r6)) { /* PWField */ kvm_write_sw_gc0_pwfield(cop0, 0x0c30c302); /* PWSize */ diff --git a/arch/mips/lib/csum_partial.S b/arch/mips/lib/csum_partial.S index fda7b57b826e..87fda0713b84 100644 --- a/arch/mips/lib/csum_partial.S +++ b/arch/mips/lib/csum_partial.S @@ -279,7 +279,8 @@ EXPORT_SYMBOL(csum_partial) #endif /* odd buffer alignment? */ -#if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_LOONGSON64) +#if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR5) || \ + defined(CONFIG_CPU_LOONGSON64) .set push .set arch=mips32r2 wsbh v1, sum @@ -732,7 +733,8 @@ EXPORT_SYMBOL(csum_partial) addu sum, v1 #endif -#if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_LOONGSON64) +#if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR5) || \ + defined(CONFIG_CPU_LOONGSON64) .set push .set arch=mips32r2 wsbh v1, sum diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c index 36a311348739..558b6fbbb6e8 100644 --- a/arch/mips/mm/c-r4k.c +++ b/arch/mips/mm/c-r4k.c @@ -1703,9 +1703,10 @@ static void setup_scache(void) return; default: - if (c->isa_level & (MIPS_CPU_ISA_M32R1 | MIPS_CPU_ISA_M32R2 | - MIPS_CPU_ISA_M32R6 | MIPS_CPU_ISA_M64R1 | - MIPS_CPU_ISA_M64R2 | MIPS_CPU_ISA_M64R6)) { + if (c->isa_level & (MIPS_CPU_ISA_M32R1 | MIPS_CPU_ISA_M64R1 | + MIPS_CPU_ISA_M32R2 | MIPS_CPU_ISA_M64R2 | + MIPS_CPU_ISA_M32R5 | MIPS_CPU_ISA_M64R5 | + MIPS_CPU_ISA_M32R6 | MIPS_CPU_ISA_M64R6)) { #ifdef CONFIG_MIPS_CPU_SCACHE if (mips_sc_init ()) { scache_size = c->scache.ways * c->scache.sets * c->scache.linesz; diff --git a/arch/mips/mm/sc-mips.c b/arch/mips/mm/sc-mips.c index dbdbfe5d8408..eedad47df24f 100644 --- a/arch/mips/mm/sc-mips.c +++ b/arch/mips/mm/sc-mips.c @@ -194,9 +194,10 @@ static inline int __init mips_sc_probe(void) return mips_sc_probe_cm3(); /* Ignore anything but MIPSxx processors */ - if (!(c->isa_level & (MIPS_CPU_ISA_M32R1 | MIPS_CPU_ISA_M32R2 | - MIPS_CPU_ISA_M32R6 | MIPS_CPU_ISA_M64R1 | - MIPS_CPU_ISA_M64R2 | MIPS_CPU_ISA_M64R6))) + if (!(c->isa_level & (MIPS_CPU_ISA_M32R1 | MIPS_CPU_ISA_M64R1 | + MIPS_CPU_ISA_M32R2 | MIPS_CPU_ISA_M64R2 | + MIPS_CPU_ISA_M32R5 | MIPS_CPU_ISA_M64R5 | + MIPS_CPU_ISA_M32R6 | MIPS_CPU_ISA_M64R6))) return 0; /* Does this MIPS32/MIPS64 CPU have a config2 register? */ From patchwork Thu May 21 00:34:33 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Serge Semin X-Patchwork-Id: 200240 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C31EAC433DF for ; Thu, 21 May 2020 00:35:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8B21A2075F for ; Thu, 21 May 2020 00:35:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726988AbgEUAfU (ORCPT ); Wed, 20 May 2020 20:35:20 -0400 Received: from mail.baikalelectronics.com ([87.245.175.226]:32994 "EHLO mail.baikalelectronics.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726844AbgEUAfT (ORCPT ); Wed, 20 May 2020 20:35:19 -0400 Received: from localhost (unknown [127.0.0.1]) by mail.baikalelectronics.ru (Postfix) with ESMTP id 738A6803087B; Thu, 21 May 2020 00:35:16 +0000 (UTC) X-Virus-Scanned: amavisd-new at baikalelectronics.ru Received: from mail.baikalelectronics.ru ([127.0.0.1]) by localhost (mail.baikalelectronics.ru [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id TIlKOzCTfKMC; Thu, 21 May 2020 03:35:15 +0300 (MSK) From: Serge Semin To: Thomas Bogendoerfer CC: Serge Semin , Serge Semin , Alexey Malahov , Paul Burton , Ralf Baechle , Arnd Bergmann , Rob Herring , , Thomas Bogendoerfer , Jiaxun Yang , Huacai Chen , Alexander Lobakin , Daniel Silsby , =?utf-8?q?Ren=C3=A9_van_Dorst?= , Herbert Xu , Ard Biesheuvel , Cedric Hombourger , Jessica Yu , Masahiro Yamada , , Subject: [PATCH v3 04/14] mips: Add MIPS Warrior P5600 support Date: Thu, 21 May 2020 03:34:33 +0300 Message-ID: <20200521003443.11385-5-Sergey.Semin@baikalelectronics.ru> In-Reply-To: <20200521003443.11385-1-Sergey.Semin@baikalelectronics.ru> References: <20200521003443.11385-1-Sergey.Semin@baikalelectronics.ru> MIME-Version: 1.0 X-ClientProxiedBy: MAIL.baikal.int (192.168.51.25) To mail (192.168.51.25) Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org This is a MIPS32 Release 5 based IP core with XPA, EVA, dual/quad issue exec pipes, MMU with two-levels TLB, UCA, MSA, MDU core level features and system level features like up to six P5600 calculation cores, CM2 with L2 cache, IOCU/IOMMU (though might be unused depending on the system-specific IP core configuration), GIC, CPC, virtualisation module, eJTAG and PDtrace. As being MIPS32 Release 5 based core it provides all the features available by the CPU_MIPS32_R5 config, while adding a few more like UCA attribute support, availability of CPU-freq (by means of L2/CM clock ratio setting), EI/VI GIC modes detection at runtime. In addition to this if P5600 architecture is enabled modern GNU GCC provides a specific tuning for P5600 processors with respect to the classic MIPS32 Release 5. First of all branch-likely avoidance is activated only when the code is compiled with the speed optimization (avoidance is always enabled for the pure MIPS32 Release 5 architecture). Secondly the madd/msub avoidance is enabled since madd/msub utilization isn't profitable due to overhead of getting the result out of the HI/LO registers. Multiply-accumulate instructions are activated and utilized together with the necessary code reorder when multiply-add/multiply-subtract statements are met. Finally load/store bonding is activated by default. All of these optimizations may make the code relatively faster than if just MIP32 release 5 architecture was requested. Co-developed-by: Alexey Malahov Signed-off-by: Alexey Malahov Signed-off-by: Serge Semin Cc: Thomas Bogendoerfer Cc: Paul Burton Cc: Ralf Baechle Cc: Arnd Bergmann Cc: Rob Herring Cc: devicetree@vger.kernel.org --- arch/mips/Kconfig | 37 +++++++++++++++++++++++++++----- arch/mips/Makefile | 1 + arch/mips/include/asm/vermagic.h | 2 ++ 3 files changed, 35 insertions(+), 5 deletions(-) diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index ec3cd300981b..b0eff203fbd8 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -1682,6 +1682,28 @@ config CPU_MIPS64_R6 family, are based on a MIPS64r6 processor. If you own an older processor, you probably need to select MIPS64r1 or MIPS64r2 instead. +config CPU_P5600 + bool "MIPS Warrior P5600" + depends on SYS_HAS_CPU_P5600 + select CPU_HAS_PREFETCH + select CPU_SUPPORTS_32BIT_KERNEL + select CPU_SUPPORTS_HIGHMEM + select CPU_SUPPORTS_MSA + select CPU_SUPPORTS_UNCACHED_ACCELERATED + select CPU_SUPPORTS_CPUFREQ + select CPU_MIPSR2_IRQ_VI + select CPU_MIPSR2_IRQ_EI + select HAVE_KVM + select MIPS_O32_FP64_SUPPORT + help + Choose this option to build a kernel for MIPS Warrior P5600 CPU. + It's based on MIPS32r5 ISA with XPA, EVA, dual/quad issue exec pipes, + MMU with two-levels TLB, UCA, MSA, MDU core level features and system + level features like up to six P5600 calculation cores, CM2 with L2 + cache, IOCU/IOMMU (though might be unused depending on the system- + specific IP core configuration), GIC, CPC, virtualisation module, + eJTAG and PDtrace. + config CPU_R3000 bool "R3000" depends on SYS_HAS_CPU_R3000 @@ -1858,7 +1880,8 @@ endchoice config CPU_MIPS32_3_5_FEATURES bool "MIPS32 Release 3.5 Features" depends on SYS_HAS_CPU_MIPS32_R3_5 - depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_MIPS32_R6 + depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_MIPS32_R6 || \ + CPU_P5600 help Choose this option to build a kernel for release 2 or later of the MIPS32 architecture including features from the 3.5 release such as @@ -1878,7 +1901,7 @@ config CPU_MIPS32_3_5_EVA config CPU_MIPS32_R5_FEATURES bool "MIPS32 Release 5 Features" depends on SYS_HAS_CPU_MIPS32_R5 - depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 + depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_P5600 help Choose this option to build a kernel for release 2 or later of the MIPS32 architecture including features from release 5 such as @@ -2033,6 +2056,10 @@ config SYS_HAS_CPU_MIPS64_R6 bool select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT +config SYS_HAS_CPU_P5600 + bool + select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT + config SYS_HAS_CPU_R3000 bool @@ -2117,7 +2144,7 @@ endmenu config CPU_MIPS32 bool default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R5 || \ - CPU_MIPS32_R6 + CPU_MIPS32_R6 || CPU_P5600 config CPU_MIPS64 bool @@ -2140,7 +2167,7 @@ config CPU_MIPSR2 config CPU_MIPSR5 bool - default y if CPU_MIPS32_R5 || CPU_MIPS64_R5 + default y if CPU_MIPS32_R5 || CPU_MIPS64_R5 || CPU_P5600 select CPU_HAS_RIXI select CPU_HAS_DIEI if !CPU_DIEI_BROKEN select MIPS_SPRAM @@ -2753,7 +2780,7 @@ config RELOCATABLE depends on CPU_MIPS32_R2 || CPU_MIPS64_R2 || \ CPU_MIPS32_R5 || CPU_MIPS64_R5 || \ CPU_MIPS32_R6 || CPU_MIPS64_R6 || \ - CAVIUM_OCTEON_SOC + CPU_P5600 || CAVIUM_OCTEON_SOC help This builds a kernel image that retains relocation information so it can be loaded someplace besides the default 1MB. diff --git a/arch/mips/Makefile b/arch/mips/Makefile index 08c8d93d61ba..a6ccf4c0190c 100644 --- a/arch/mips/Makefile +++ b/arch/mips/Makefile @@ -177,6 +177,7 @@ cflags-$(CONFIG_CPU_MIPS64_R1) += -march=mips64 -Wa,--trap cflags-$(CONFIG_CPU_MIPS64_R2) += -march=mips64r2 -Wa,--trap cflags-$(CONFIG_CPU_MIPS64_R5) += -march=mips64r5 -Wa,--trap cflags-$(CONFIG_CPU_MIPS64_R6) += -march=mips64r6 -Wa,--trap +cflags-$(CONFIG_CPU_P5600) += -march=p5600 -Wa,--trap -modd-spreg cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=r5000) \ -Wa,--trap diff --git a/arch/mips/include/asm/vermagic.h b/arch/mips/include/asm/vermagic.h index 01d0ea9e9e23..4d2dae0c7c57 100644 --- a/arch/mips/include/asm/vermagic.h +++ b/arch/mips/include/asm/vermagic.h @@ -50,6 +50,8 @@ #define MODULE_PROC_FAMILY "LOONGSON64 " #elif defined CONFIG_CPU_CAVIUM_OCTEON #define MODULE_PROC_FAMILY "OCTEON " +#elif defined CONFIG_CPU_P5600 +#define MODULE_PROC_FAMILY "P5600 " #elif defined CONFIG_CPU_XLR #define MODULE_PROC_FAMILY "XLR " #elif defined CONFIG_CPU_XLP From patchwork Thu May 21 00:34:36 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Serge Semin X-Patchwork-Id: 200239 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CF43CC433E0 for ; Thu, 21 May 2020 00:35:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B821D2078C for ; Thu, 21 May 2020 00:35:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727067AbgEUAf2 (ORCPT ); Wed, 20 May 2020 20:35:28 -0400 Received: from mail.baikalelectronics.com ([87.245.175.226]:33090 "EHLO mail.baikalelectronics.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727037AbgEUAf0 (ORCPT ); Wed, 20 May 2020 20:35:26 -0400 Received: from localhost (unknown [127.0.0.1]) by mail.baikalelectronics.ru (Postfix) with ESMTP id 63D308030779; Thu, 21 May 2020 00:35:23 +0000 (UTC) X-Virus-Scanned: amavisd-new at baikalelectronics.ru Received: from mail.baikalelectronics.ru ([127.0.0.1]) by localhost (mail.baikalelectronics.ru [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Rj_9zcV3a1y7; Thu, 21 May 2020 03:35:22 +0300 (MSK) From: Serge Semin To: Thomas Bogendoerfer CC: Serge Semin , Serge Semin , Alexey Malahov , Paul Burton , Ralf Baechle , Arnd Bergmann , Rob Herring , , Zhou Yanjie , Jiaxun Yang , Greg Kroah-Hartman , Allison Randal , Thomas Gleixner , , Subject: [PATCH v3 07/14] mips: Add CONFIG/CONFIG6/Cause reg fields macro Date: Thu, 21 May 2020 03:34:36 +0300 Message-ID: <20200521003443.11385-8-Sergey.Semin@baikalelectronics.ru> In-Reply-To: <20200521003443.11385-1-Sergey.Semin@baikalelectronics.ru> References: <20200521003443.11385-1-Sergey.Semin@baikalelectronics.ru> MIME-Version: 1.0 X-ClientProxiedBy: MAIL.baikal.int (192.168.51.25) To mail (192.168.51.25) Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org There are bit fields which persist in the MIPS CONFIG and CONFIG6 registers, but haven't been described in the generic mipsregs.h header so far. In particular, the generic CONFIG bitfields are BE - endian mode, BM - burst mode, SB - SimpleBE, OCP interface mode indicator, UDI - user-defined "CorExtend" instructions, DSP - data scratch pad RAM present, ISP - instruction scratch pad RAM present, etc. The core-specific CONFIG6 bitfields are JRCD - jump register cache prediction disable, R6 - MIPSr6 extensions enable, IFUPerfCtl - IFU performance control, SPCD - sleep state performance counter, DLSB - disable load/store bonding. A new exception code reported in the ExcCode field of the Cause register: 30 - Parity/ECC error exception happened on either fetch, load or cache refill. Lets add them to the mipsregs.h header to be used in future platform code, which have them utilized. Signed-off-by: Serge Semin Cc: Alexey Malahov Cc: Thomas Bogendoerfer Cc: Paul Burton Cc: Ralf Baechle Cc: Arnd Bergmann Cc: Rob Herring Cc: devicetree@vger.kernel.org --- arch/mips/include/asm/mipsregs.h | 19 +++++++++++++++++++ arch/mips/kernel/spram.c | 4 ++-- 2 files changed, 21 insertions(+), 2 deletions(-) diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h index b1c761279b13..039ebd913f00 100644 --- a/arch/mips/include/asm/mipsregs.h +++ b/arch/mips/include/asm/mipsregs.h @@ -468,6 +468,7 @@ #define EXCCODE_THREAD 25 /* Thread exceptions (MT) */ #define EXCCODE_DSPDIS 26 /* DSP disabled exception */ #define EXCCODE_GE 27 /* Virtualized guest exception (VZ) */ +#define EXCCODE_CACHEERR 30 /* Parity/ECC occured on a core */ /* Implementation specific trap codes used by MIPS cores */ #define MIPS_EXCCODE_TLBPAR 16 /* TLB parity error exception */ @@ -563,9 +564,17 @@ #define MIPS_CONF_MT_FTLB (_ULCAST_(4) << 7) #define MIPS_CONF_AR (_ULCAST_(7) << 10) #define MIPS_CONF_AT (_ULCAST_(3) << 13) +#define MIPS_CONF_BE (_ULCAST_(1) << 15) +#define MIPS_CONF_BM (_ULCAST_(1) << 16) #define MIPS_CONF_MM (_ULCAST_(3) << 17) #define MIPS_CONF_MM_SYSAD (_ULCAST_(1) << 17) #define MIPS_CONF_MM_FULL (_ULCAST_(2) << 17) +#define MIPS_CONF_SB (_ULCAST_(1) << 21) +#define MIPS_CONF_UDI (_ULCAST_(1) << 22) +#define MIPS_CONF_DSP (_ULCAST_(1) << 23) +#define MIPS_CONF_ISP (_ULCAST_(1) << 24) +#define MIPS_CONF_KU (_ULCAST_(3) << 25) +#define MIPS_CONF_K23 (_ULCAST_(3) << 28) #define MIPS_CONF_M (_ULCAST_(1) << 31) /* @@ -677,9 +686,19 @@ #define MIPS_CONF5_CV (_ULCAST_(1) << 29) #define MIPS_CONF5_K (_ULCAST_(1) << 30) +/* Jump register cache prediction disable */ +#define MIPS_CONF6_JRCD (_ULCAST_(1) << 0) +/* MIPSr6 extensions enable */ +#define MIPS_CONF6_R6 (_ULCAST_(1) << 2) +/* IFU Performance Control */ +#define MIPS_CONF6_IFUPERFCTL (_ULCAST_(3) << 10) #define MIPS_CONF6_SYND (_ULCAST_(1) << 13) +/* Sleep state performance counter disable */ +#define MIPS_CONF6_SPCD (_ULCAST_(1) << 14) /* proAptiv FTLB on/off bit */ #define MIPS_CONF6_FTLBEN (_ULCAST_(1) << 15) +/* Disable load/store bonding */ +#define MIPS_CONF6_DLSB (_ULCAST_(1) << 21) /* Loongson-3 FTLB on/off bit */ #define MIPS_CONF6_FTLBDIS (_ULCAST_(1) << 22) /* FTLB probability bits */ diff --git a/arch/mips/kernel/spram.c b/arch/mips/kernel/spram.c index 26d355462ace..d5d96214cce5 100644 --- a/arch/mips/kernel/spram.c +++ b/arch/mips/kernel/spram.c @@ -209,11 +209,11 @@ void spram_config(void) case CPU_P6600: config0 = read_c0_config(); /* FIXME: addresses are Malta specific */ - if (config0 & (1<<24)) { + if (config0 & MIPS_CONF_ISP) { probe_spram("ISPRAM", 0x1c000000, &ispram_load_tag, &ispram_store_tag); } - if (config0 & (1<<23)) + if (config0 & MIPS_CONF_DSP) probe_spram("DSPRAM", 0x1c100000, &dspram_load_tag, &dspram_store_tag); } From patchwork Thu May 21 00:34:40 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Serge Semin X-Patchwork-Id: 200236 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7CA91C433E2 for ; Thu, 21 May 2020 00:35:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 592212078C for ; Thu, 21 May 2020 00:35:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727785AbgEUAfu (ORCPT ); Wed, 20 May 2020 20:35:50 -0400 Received: from mail.baikalelectronics.com ([87.245.175.226]:33192 "EHLO mail.baikalelectronics.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727109AbgEUAfc (ORCPT ); Wed, 20 May 2020 20:35:32 -0400 Received: from localhost (unknown [127.0.0.1]) by mail.baikalelectronics.ru (Postfix) with ESMTP id 280B480004AB; Thu, 21 May 2020 00:35:30 +0000 (UTC) X-Virus-Scanned: amavisd-new at baikalelectronics.ru Received: from mail.baikalelectronics.ru ([127.0.0.1]) by localhost (mail.baikalelectronics.ru [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Q-20tdUmn4KG; Thu, 21 May 2020 03:35:29 +0300 (MSK) From: Serge Semin To: Thomas Bogendoerfer CC: Serge Semin , Serge Semin , Alexey Malahov , Paul Burton , Ralf Baechle , Greg Kroah-Hartman , Arnd Bergmann , Olof Johansson , Rob Herring , , , Jonathan Cameron , David Lechner , John Garry , Manivannan Sadhasivam , Jon Hunter , =?utf-8?q?Marek_Beh=C3=BAn?= , Sameer Pujar , Subject: [PATCH v3 11/14] bus: cdmm: Add MIPS R5 arch support Date: Thu, 21 May 2020 03:34:40 +0300 Message-ID: <20200521003443.11385-12-Sergey.Semin@baikalelectronics.ru> In-Reply-To: <20200521003443.11385-1-Sergey.Semin@baikalelectronics.ru> References: <20200521003443.11385-1-Sergey.Semin@baikalelectronics.ru> MIME-Version: 1.0 X-ClientProxiedBy: MAIL.baikal.int (192.168.51.25) To mail (192.168.51.25) Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org CDMM may be available not only MIPS R2 architectures, but also in newer MIPS R5 chips. For instance our P5600 chip has one. Lets mark the CDMM bus being supported for that MIPS arch too. Co-developed-by: Alexey Malahov Signed-off-by: Alexey Malahov Signed-off-by: Serge Semin Reviewed-by: Thomas Bogendoerfer Cc: Paul Burton Cc: Ralf Baechle Cc: Greg Kroah-Hartman Cc: Arnd Bergmann Cc: Olof Johansson Cc: Rob Herring Cc: linux-mips@vger.kernel.org Cc: devicetree@vger.kernel.org --- drivers/bus/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/bus/Kconfig b/drivers/bus/Kconfig index 6d4e4497b59b..971c07bc92d4 100644 --- a/drivers/bus/Kconfig +++ b/drivers/bus/Kconfig @@ -58,7 +58,7 @@ config IMX_WEIM config MIPS_CDMM bool "MIPS Common Device Memory Map (CDMM) Driver" - depends on CPU_MIPSR2 + depends on CPU_MIPSR2 || CPU_MIPSR5 help Driver needed for the MIPS Common Device Memory Map bus in MIPS cores. This bus is for per-CPU tightly coupled devices such as the From patchwork Thu May 21 00:34:42 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Serge Semin X-Patchwork-Id: 200237 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E21F2C433DF for ; Thu, 21 May 2020 00:35:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C9BEF2078C for ; Thu, 21 May 2020 00:35:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726853AbgEUAfo (ORCPT ); Wed, 20 May 2020 20:35:44 -0400 Received: from mail.baikalelectronics.com ([87.245.175.226]:33264 "EHLO mail.baikalelectronics.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727785AbgEUAff (ORCPT ); Wed, 20 May 2020 20:35:35 -0400 Received: from localhost (unknown [127.0.0.1]) by mail.baikalelectronics.ru (Postfix) with ESMTP id E6A5E8029EB7; Thu, 21 May 2020 00:35:32 +0000 (UTC) X-Virus-Scanned: amavisd-new at baikalelectronics.ru Received: from mail.baikalelectronics.ru ([127.0.0.1]) by localhost (mail.baikalelectronics.ru [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 282dDLsDfqmV; Thu, 21 May 2020 03:35:32 +0300 (MSK) From: Serge Semin To: Thomas Bogendoerfer CC: Serge Semin , Serge Semin , Alexey Malahov , Paul Burton , Ralf Baechle , Greg Kroah-Hartman , Arnd Bergmann , Rob Herring , , Thomas Bogendoerfer , Jiaxun Yang , Huacai Chen , Alexander Lobakin , Thomas Gleixner , Vincenzo Frascino , , Subject: [PATCH v3 13/14] mips: csrc-r4k: Mark R4K timer as unstable if CPU freq changes Date: Thu, 21 May 2020 03:34:42 +0300 Message-ID: <20200521003443.11385-14-Sergey.Semin@baikalelectronics.ru> In-Reply-To: <20200521003443.11385-1-Sergey.Semin@baikalelectronics.ru> References: <20200521003443.11385-1-Sergey.Semin@baikalelectronics.ru> MIME-Version: 1.0 X-ClientProxiedBy: MAIL.baikal.int (192.168.51.25) To mail (192.168.51.25) Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Commit 07d69579e7fe ("MIPS: Don't register r4k sched clock when CPUFREQ enabled") disabled the r4k-clock usage for scheduler ticks counting due to the scheduler being non-tolerant for unstable clocks sources. For the same reason the clock should be used in the system clocksource framework with care. As soon as CPU frequency changes the clocksource framework should be notified about this by marking the R4K timer being unstable (which it really is, since the ticks rate has been changed synchronously with the CPU frequency). Signed-off-by: Serge Semin Cc: Alexey Malahov Cc: Thomas Bogendoerfer Cc: Paul Burton Cc: Ralf Baechle Cc: Greg Kroah-Hartman Cc: Arnd Bergmann Cc: Rob Herring Cc: devicetree@vger.kernel.org --- Changelog v3: - Mark clocksource as unstable instead of lowering its rating. --- arch/mips/Kconfig | 1 + arch/mips/kernel/csrc-r4k.c | 40 +++++++++++++++++++++++++++++++++++++ 2 files changed, 41 insertions(+) diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index b0eff203fbd8..c2911864fee1 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -1154,6 +1154,7 @@ config CSRC_IOASIC bool config CSRC_R4K + select CLOCKSOURCE_WATCHDOG if CPU_FREQ bool config CSRC_SB1250 diff --git a/arch/mips/kernel/csrc-r4k.c b/arch/mips/kernel/csrc-r4k.c index 437dda64fd7a..edc4afc080fa 100644 --- a/arch/mips/kernel/csrc-r4k.c +++ b/arch/mips/kernel/csrc-r4k.c @@ -6,6 +6,7 @@ * Copyright (C) 2007 by Ralf Baechle */ #include +#include #include #include @@ -65,6 +66,45 @@ static bool rdhwr_count_usable(void) return false; } +#ifdef CONFIG_CPU_FREQ + +static bool __read_mostly r4k_clock_unstable; + +static void r4k_clocksource_unstable(char *reason) +{ + if (r4k_clock_unstable) + return; + + r4k_clock_unstable = true; + + pr_info("R4K timer is unstable due to %s\n", reason); + + clocksource_mark_unstable(&clocksource_mips); +} + +static int r4k_cpufreq_callback(struct notifier_block *nb, + unsigned long val, void *data) +{ + if (val == CPUFREQ_POSTCHANGE) + r4k_clocksource_unstable("CPU frequency change"); + + return 0; +} + +static struct notifier_block r4k_cpufreq_notifier = { + .notifier_call = r4k_cpufreq_callback, +}; + +static int __init r4k_register_cpufreq_notifier(void) +{ + return cpufreq_register_notifier(&r4k_cpufreq_notifier, + CPUFREQ_TRANSITION_NOTIFIER); + +} +core_initcall(r4k_register_cpufreq_notifier); + +#endif /* !CONFIG_CPU_FREQ */ + int __init init_r4k_clocksource(void) { if (!cpu_has_counter || !mips_hpt_frequency) From patchwork Thu May 21 00:34:43 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Serge Semin X-Patchwork-Id: 200238 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AD81EC433E3 for ; Thu, 21 May 2020 00:35:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 974722075F for ; Thu, 21 May 2020 00:35:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727119AbgEUAfj (ORCPT ); Wed, 20 May 2020 20:35:39 -0400 Received: from mail.baikalelectronics.com ([87.245.175.226]:33048 "EHLO mail.baikalelectronics.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727798AbgEUAfg (ORCPT ); Wed, 20 May 2020 20:35:36 -0400 Received: from localhost (unknown [127.0.0.1]) by mail.baikalelectronics.ru (Postfix) with ESMTP id E97E38030791; Thu, 21 May 2020 00:35:33 +0000 (UTC) X-Virus-Scanned: amavisd-new at baikalelectronics.ru Received: from mail.baikalelectronics.ru ([127.0.0.1]) by localhost (mail.baikalelectronics.ru [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id w9zTcyg2r2ci; Thu, 21 May 2020 03:35:33 +0300 (MSK) From: Serge Semin To: Thomas Bogendoerfer CC: Serge Semin , Serge Semin , Alexey Malahov , Paul Burton , Ralf Baechle , Greg Kroah-Hartman , Arnd Bergmann , Rob Herring , , afzal mohammed , , Subject: [PATCH v3 14/14] mips: cevt-r4k: Update the r4k-clockevent frequency in sync with CPU Date: Thu, 21 May 2020 03:34:43 +0300 Message-ID: <20200521003443.11385-15-Sergey.Semin@baikalelectronics.ru> In-Reply-To: <20200521003443.11385-1-Sergey.Semin@baikalelectronics.ru> References: <20200521003443.11385-1-Sergey.Semin@baikalelectronics.ru> MIME-Version: 1.0 X-ClientProxiedBy: MAIL.baikal.int (192.168.51.25) To mail (192.168.51.25) Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Due to being embedded into the CPU cores MIPS count/compare timer frequency is changed together with the CPU clocks alteration. In case if frequency really changes the kernel clockevent framework must be notified, otherwise the kernel timers won't work correctly. Fix this by calling clockevents_update_freq() for each r4k clockevent handlers registered per available CPUs. Traditionally MIPS r4k-clock are clocked with CPU frequency divided by 2. But this isn't true for some of the platforms. Due to this we have to save the basic CPU frequency, so then use it to scale the initial timer frequency (mips_hpt_frequency) and pass the updated value further to the clockevent framework. Signed-off-by: Serge Semin Cc: Alexey Malahov Cc: Thomas Bogendoerfer Cc: Paul Burton Cc: Ralf Baechle Cc: Greg Kroah-Hartman Cc: Arnd Bergmann Cc: Rob Herring Cc: devicetree@vger.kernel.org --- Changelog v3: - Add r4k_ prefix to the cpufreq change notifier methods. --- arch/mips/kernel/cevt-r4k.c | 44 +++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) diff --git a/arch/mips/kernel/cevt-r4k.c b/arch/mips/kernel/cevt-r4k.c index 17a9cbb8b3df..995ad9e69ded 100644 --- a/arch/mips/kernel/cevt-r4k.c +++ b/arch/mips/kernel/cevt-r4k.c @@ -8,6 +8,7 @@ */ #include #include +#include #include #include #include @@ -250,6 +251,49 @@ unsigned int __weak get_c0_compare_int(void) return MIPS_CPU_IRQ_BASE + cp0_compare_irq; } +#ifdef CONFIG_CPU_FREQ + +static unsigned long mips_ref_freq; + +static int r4k_cpufreq_callback(struct notifier_block *nb, + unsigned long val, void *data) +{ + struct cpufreq_freqs *freq = data; + struct clock_event_device *cd; + unsigned long rate; + int cpu; + + if (!mips_ref_freq) + mips_ref_freq = freq->old; + + if (val == CPUFREQ_POSTCHANGE) { + rate = cpufreq_scale(mips_hpt_frequency, mips_ref_freq, + freq->new); + + for_each_cpu(cpu, freq->policy->cpus) { + cd = &per_cpu(mips_clockevent_device, cpu); + + clockevents_update_freq(cd, rate); + } + } + + return 0; +} + +static struct notifier_block r4k_cpufreq_notifier = { + .notifier_call = r4k_cpufreq_callback, +}; + +static int __init r4k_register_cpufreq_notifier(void) +{ + return cpufreq_register_notifier(&r4k_cpufreq_notifier, + CPUFREQ_TRANSITION_NOTIFIER); + +} +core_initcall(r4k_register_cpufreq_notifier); + +#endif /* !CONFIG_CPU_FREQ */ + int r4k_clockevent_init(void) { unsigned long flags = IRQF_PERCPU | IRQF_TIMER | IRQF_SHARED;