From patchwork Sun May 3 10:33:04 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: WANG Xuerui X-Patchwork-Id: 11524409 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3552C912 for ; Sun, 3 May 2020 10:36:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 12F6D2075B for ; Sun, 3 May 2020 10:36:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=xen0n.name header.i=@xen0n.name header.b="JDZ75ZXk" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728018AbgECKgz (ORCPT ); Sun, 3 May 2020 06:36:55 -0400 Received: from [115.28.160.31] ([115.28.160.31]:57450 "EHLO mailbox.box.xen0n.name" rhost-flags-FAIL-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1727125AbgECKgz (ORCPT ); Sun, 3 May 2020 06:36:55 -0400 Received: from localhost.localdomain (unknown [116.236.177.50]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mailbox.box.xen0n.name (Postfix) with ESMTPSA id EC7E8600B4; Sun, 3 May 2020 18:36:52 +0800 (CST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=xen0n.name; s=mail; t=1588502213; bh=ONRtGOA4myqnZrJLa5c+bfIHlPkdzZQWJl5rHs3mfJA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JDZ75ZXkEHjpcKcdsM7mnSWIm82Wp1wA1Q+xXiopJS54dC0w8xf4H0dtQ4p9s7dx5 3wHnNiuavKnzScdjx0+f7FQa6NlHoW/ax1ILxd2edMxz+R+LGd42m8ACTtD2W9o1gc l9PnPxbrwHQ8wOWWMrv04ZXl8bPCp4GfcaXMN1XQ= From: WANG Xuerui To: linux-mips@vger.kernel.org Cc: WANG Xuerui , Huacai Chen , Jiaxun Yang Subject: [PATCH v2 3/4] MIPS: define more Loongson CP0.Config6 and CP0.Diag feature bits Date: Sun, 3 May 2020 18:33:04 +0800 Message-Id: <20200503103304.40678-4-git@xen0n.name> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20200502133846.40590-1-git@xen0n.name> References: <20200502133846.40590-1-git@xen0n.name> MIME-Version: 1.0 Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org These are exposed to userland alternatively via the new CPUCFG instruction on Loongson-3A R4 and above. Add definitions for readback on older cores. Signed-off-by: WANG Xuerui Cc: Huacai Chen Cc: Jiaxun Yang --- arch/mips/include/asm/mipsregs.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h index 796fe47cfd17..90f843c72774 100644 --- a/arch/mips/include/asm/mipsregs.h +++ b/arch/mips/include/asm/mipsregs.h @@ -681,6 +681,10 @@ #define MIPS_CONF6_FTLBDIS (_ULCAST_(1) << 22) /* FTLB probability bits */ #define MIPS_CONF6_FTLBP_SHIFT (16) +/* Loongson-3 feature bits */ +#define MIPS_CONF6_LOONGSON_SCRAND (_ULCAST_(1) << 17) +#define MIPS_CONF6_LOONGSON_LLEXC (_ULCAST_(1) << 16) +#define MIPS_CONF6_LOONGSON_STFILL (_ULCAST_(1) << 8) #define MIPS_CONF7_WII (_ULCAST_(1) << 31) @@ -997,6 +1001,8 @@ #define LOONGSON_DIAG_ITLB (_ULCAST_(1) << 2) /* Flush DTLB */ #define LOONGSON_DIAG_DTLB (_ULCAST_(1) << 3) +/* Allow some CACHE instructions (CACHE0, 1, 3, 21 and 23) in user mode */ +#define LOONGSON_DIAG_UCAC (_ULCAST_(1) << 8) /* Flush VTLB */ #define LOONGSON_DIAG_VTLB (_ULCAST_(1) << 12) /* Flush FTLB */