From mboxrd@z Thu Jan 1 00:00:00 1970 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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 A4F85C4CECF for ; Mon, 23 Sep 2019 18:26:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7D9E420B7C for ; Mon, 23 Sep 2019 18:26:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569263215; bh=QjSVLeVTBYQSW0O5/fla/uJC+HILQyB708KKJhGA8PA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=JWe3LeRsgyDSz9alAJm0HsOcN5aAGAItiSAql+m5tecXGiADSDjBxRL8U1VNXzuMh eOYLLxNCpMvohScBhbY0eS0/6XPeO4bzQnEte4EVV44w3Ic7aSDx/79zbsQ29tDV9n em6/S2OjNA4wmT+2KBvOf48Vng3csnPvnDOfr0S4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2502255AbfIWS0y (ORCPT ); Mon, 23 Sep 2019 14:26:54 -0400 Received: from foss.arm.com ([217.140.110.172]:46750 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2502244AbfIWS0x (ORCPT ); Mon, 23 Sep 2019 14:26:53 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 3E9741688; Mon, 23 Sep 2019 11:26:53 -0700 (PDT) Received: from big-swifty.lan (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id A69E33F694; Mon, 23 Sep 2019 11:26:50 -0700 (PDT) From: Marc Zyngier To: kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org Cc: Eric Auger , James Morse , Julien Thierry , Suzuki K Poulose , Thomas Gleixner , Jason Cooper , Lorenzo Pieralisi , Andrew Murray Subject: [PATCH 07/35] irqchip/gic-v3-its: Kill its->ite_size and use TYPER copy instead Date: Mon, 23 Sep 2019 19:25:38 +0100 Message-Id: <20190923182606.32100-8-maz@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190923182606.32100-1-maz@kernel.org> References: <20190923182606.32100-1-maz@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Now that we have a copy of TYPER in the ITS structure, rely on this to provide the same service as its->ite_size, which gets axed. Errata workarounds are now updating the cached fields instead of requiring a separate field in the ITS structure. Signed-off-by: Marc Zyngier --- drivers/irqchip/irq-gic-v3-its.c | 8 ++++---- include/linux/irqchip/arm-gic-v3.h | 2 +- 2 files changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index 731726540efa..94a0885a57b6 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -6,6 +6,7 @@ #include #include +#include #include #include #include @@ -108,7 +109,6 @@ struct its_node { struct list_head its_device_list; u64 flags; unsigned long list_nr; - u32 ite_size; u32 device_ids; int numa_node; unsigned int msi_domain_flags; @@ -2444,7 +2444,7 @@ static struct its_device *its_create_device(struct its_node *its, u32 dev_id, * sized as a power of two (and you need at least one bit...). */ nr_ites = max(2, nvecs); - sz = nr_ites * its->ite_size; + sz = nr_ites * (FIELD_GET(GITS_TYPER_ITT_ENTRY_SIZE, its->typer) + 1); sz = max(sz, ITS_ITT_ALIGN) + ITS_ITT_ALIGN - 1; itt = kzalloc_node(sz, GFP_KERNEL, its->numa_node); if (alloc_lpis) { @@ -3258,7 +3258,8 @@ static bool __maybe_unused its_enable_quirk_qdf2400_e0065(void *data) struct its_node *its = data; /* On QDF2400, the size of the ITE is 16Bytes */ - its->ite_size = 16; + its->typer &= ~GITS_TYPER_ITT_ENTRY_SIZE; + its->typer |= FIELD_PREP(GITS_TYPER_ITT_ENTRY_SIZE, 16 - 1); return true; } @@ -3627,7 +3628,6 @@ static int __init its_probe_one(struct resource *res, its->typer = typer; its->base = its_base; its->phys_base = res->start; - its->ite_size = GITS_TYPER_ITT_ENTRY_SIZE(typer); its->device_ids = GITS_TYPER_DEVBITS(typer); if (is_v4(its)) { if (!(typer & GITS_TYPER_VMOVP)) { diff --git a/include/linux/irqchip/arm-gic-v3.h b/include/linux/irqchip/arm-gic-v3.h index 71730b9def0c..df8994f23a00 100644 --- a/include/linux/irqchip/arm-gic-v3.h +++ b/include/linux/irqchip/arm-gic-v3.h @@ -339,7 +339,7 @@ #define GITS_TYPER_PLPIS (1UL << 0) #define GITS_TYPER_VLPIS (1UL << 1) #define GITS_TYPER_ITT_ENTRY_SIZE_SHIFT 4 -#define GITS_TYPER_ITT_ENTRY_SIZE(r) ((((r) >> GITS_TYPER_ITT_ENTRY_SIZE_SHIFT) & 0xf) + 1) +#define GITS_TYPER_ITT_ENTRY_SIZE GENMASK_ULL(7, 4) #define GITS_TYPER_IDBITS_SHIFT 8 #define GITS_TYPER_DEVBITS_SHIFT 13 #define GITS_TYPER_DEVBITS(r) ((((r) >> GITS_TYPER_DEVBITS_SHIFT) & 0x1f) + 1) -- 2.20.1