From patchwork Wed May 29 08:42:59 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiaxun Yang X-Patchwork-Id: 10966501 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1D65176 for ; Wed, 29 May 2019 08:49:00 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 10050287D2 for ; Wed, 29 May 2019 08:49:00 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 03FF5288B2; Wed, 29 May 2019 08:49:00 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2204E287D2 for ; Wed, 29 May 2019 08:48:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725948AbfE2Is6 (ORCPT ); Wed, 29 May 2019 04:48:58 -0400 Received: from forward104o.mail.yandex.net ([37.140.190.179]:49986 "EHLO forward104o.mail.yandex.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725936AbfE2Is6 (ORCPT ); Wed, 29 May 2019 04:48:58 -0400 X-Greylist: delayed 332 seconds by postgrey-1.27 at vger.kernel.org; Wed, 29 May 2019 04:48:55 EDT Received: from mxback7g.mail.yandex.net (mxback7g.mail.yandex.net [IPv6:2a02:6b8:0:1472:2741:0:8b7:168]) by forward104o.mail.yandex.net (Yandex) with ESMTP id C8DF29400E7; Wed, 29 May 2019 11:43:21 +0300 (MSK) Received: from smtp4o.mail.yandex.net (smtp4o.mail.yandex.net [2a02:6b8:0:1a2d::28]) by mxback7g.mail.yandex.net (nwsmtp/Yandex) with ESMTP id n6BLv0hg0n-hK043xmu; Wed, 29 May 2019 11:43:21 +0300 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=flygoat.com; s=mail; t=1559119401; bh=cwfu+B8rHHOK+UWLBqLOe2IKQHRFtbxjXw1XP5b7/JY=; h=Subject:To:From:Message-Id:Cc:Date; b=wvR4D7wp8DsEbQ68C7f2rbSxyARJXP82uMLdD0+A5/HgfbkMvITPAhtoQeMfV2aSh FzFFhfCfgNLfz6q1e2f1/Paed6CsdhqC+1d826nTqtLnare9J3xcgV7jn9Q/FqONks qSpB5j84lfIQaP5yY9/WCfHJ1FDAyG4N5oEn16TM= Authentication-Results: mxback7g.mail.yandex.net; dkim=pass header.i=@flygoat.com Received: by smtp4o.mail.yandex.net (nwsmtp/Yandex) with ESMTPSA id b393VP2gFV-hEBeY9rP; Wed, 29 May 2019 11:43:19 +0300 (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (Client certificate not present) From: Jiaxun Yang To: linux-mips@vger.kernel.org Cc: paul.burton@mips.com, Jiaxun Yang , Huacai Chen , Yunqiang Su , stable@vger.kernel.org Subject: [PATCH v2] MIPS: Treat Loongson Extensions as ASEs Date: Wed, 29 May 2019 16:42:59 +0800 Message-Id: <20190529084259.8511-1-jiaxun.yang@flygoat.com> X-Mailer: git-send-email 2.21.0 MIME-Version: 1.0 Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Recently, binutils had split Loongson-3 Extensions into four ASEs: MMI, CAM, EXT, EXT2. This patch do the samething in kernel and expose them in cpuinfo so applications can probe supported ASEs at runtime. Signed-off-by: Jiaxun Yang Cc: Huacai Chen Cc: Yunqiang Su Cc: stable@vger.kernel.org # v4.14+ --- arch/mips/include/asm/cpu-features.h | 16 ++++++++++++++++ arch/mips/include/asm/cpu.h | 4 ++++ arch/mips/kernel/cpu-probe.c | 6 ++++++ arch/mips/kernel/proc.c | 4 ++++ 4 files changed, 30 insertions(+) diff --git a/arch/mips/include/asm/cpu-features.h b/arch/mips/include/asm/cpu-features.h index 6998a9796499..4e2bea8875f5 100644 --- a/arch/mips/include/asm/cpu-features.h +++ b/arch/mips/include/asm/cpu-features.h @@ -397,6 +397,22 @@ #define cpu_has_dsp3 __ase(MIPS_ASE_DSP3) #endif +#ifndef cpu_has_loongson_mmi +#define cpu_has_loongson_mmi __ase(MIPS_ASE_LOONGSON_MMI) +#endif + +#ifndef cpu_has_loongson_cam +#define cpu_has_loongson_cam __ase(MIPS_ASE_LOONGSON_CAM) +#endif + +#ifndef cpu_has_loongson_ext +#define cpu_has_loongson_ext __ase(MIPS_ASE_LOONGSON_EXT) +#endif + +#ifndef cpu_has_loongson_ext2 +#define cpu_has_loongson_ext2 __ase(MIPS_ASE_LOONGSON_EXT2) +#endif + #ifndef cpu_has_mipsmt #define cpu_has_mipsmt __isa_lt_and_ase(6, MIPS_ASE_MIPSMT) #endif diff --git a/arch/mips/include/asm/cpu.h b/arch/mips/include/asm/cpu.h index 6ad7d3cabd91..cc15670ef43a 100644 --- a/arch/mips/include/asm/cpu.h +++ b/arch/mips/include/asm/cpu.h @@ -438,5 +438,9 @@ enum cpu_type_enum { #define MIPS_ASE_MSA 0x00000100 /* MIPS SIMD Architecture */ #define MIPS_ASE_DSP3 0x00000200 /* Signal Processing ASE Rev 3*/ #define MIPS_ASE_MIPS16E2 0x00000400 /* MIPS16e2 */ +#define MIPS_ASE_LOONGSON_MMI 0x00000800 /* Loongson MultiMedia extensions Instructions */ +#define MIPS_ASE_LOONGSON_CAM 0x00001000 /* Loongson CAM */ +#define MIPS_ASE_LOONGSON_EXT 0x00002000 /* Loongson EXTensions */ +#define MIPS_ASE_LOONGSON_EXT2 0x00004000 /* Loongson EXTensions R2 */ #endif /* _ASM_CPU_H */ diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c index 6126b77d5a62..f349be1cf5b8 100644 --- a/arch/mips/kernel/cpu-probe.c +++ b/arch/mips/kernel/cpu-probe.c @@ -1577,6 +1577,8 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c, unsigned int cpu) __cpu_name[cpu] = "ICT Loongson-3"; set_elf_platform(cpu, "loongson3a"); set_isa(c, MIPS_CPU_ISA_M64R1); + c->ases |= (MIPS_ASE_LOONGSON_MMI | MIPS_ASE_LOONGSON_CAM | + MIPS_ASE_LOONGSON_EXT); break; case PRID_REV_LOONGSON3B_R1: case PRID_REV_LOONGSON3B_R2: @@ -1584,6 +1586,8 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c, unsigned int cpu) __cpu_name[cpu] = "ICT Loongson-3"; set_elf_platform(cpu, "loongson3b"); set_isa(c, MIPS_CPU_ISA_M64R1); + c->ases |= (MIPS_ASE_LOONGSON_MMI | MIPS_ASE_LOONGSON_CAM | + MIPS_ASE_LOONGSON_EXT); break; } @@ -1950,6 +1954,8 @@ static inline void cpu_probe_loongson(struct cpuinfo_mips *c, unsigned int cpu) decode_configs(c); c->options |= MIPS_CPU_FTLB | MIPS_CPU_TLBINV | MIPS_CPU_LDPTE; c->writecombine = _CACHE_UNCACHED_ACCELERATED; + c->ases |= (MIPS_ASE_LOONGSON_MMI | MIPS_ASE_LOONGSON_CAM | + MIPS_ASE_LOONGSON_EXT | MIPS_ASE_LOONGSON_EXT2); break; default: panic("Unknown Loongson Processor ID!"); diff --git a/arch/mips/kernel/proc.c b/arch/mips/kernel/proc.c index b2de408a259e..f8d36710cd58 100644 --- a/arch/mips/kernel/proc.c +++ b/arch/mips/kernel/proc.c @@ -124,6 +124,10 @@ static int show_cpuinfo(struct seq_file *m, void *v) if (cpu_has_eva) seq_printf(m, "%s", " eva"); if (cpu_has_htw) seq_printf(m, "%s", " htw"); if (cpu_has_xpa) seq_printf(m, "%s", " xpa"); + if (cpu_has_loongson_mmi) seq_printf(m, "%s", " loongson-mmi"); + if (cpu_has_loongson_cam) seq_printf(m, "%s", " loongson-cam"); + if (cpu_has_loongson_ext) seq_printf(m, "%s", " loongson-ext"); + if (cpu_has_loongson_ext2) seq_printf(m, "%s", " loongson-ext2"); seq_printf(m, "\n"); if (cpu_has_mmips) {