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 13ED6C433FF for ; Tue, 6 Aug 2019 10:01:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E224E2147A for ; Tue, 6 Aug 2019 10:01:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1565085703; bh=I/ZhpfDIBoxiS46SxEHUxRpTRKiiuWuOxkHGL5fQ5is=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=kTIUP+UmxyDYnZ9OYX6dBBm5C0mXwoxx7JO6s1IU1LIYNNp9MoPFpiTD2YFqwGOlJ JY5ZJ2AwjJHMTnYZpYS9QCCzvthoZ77RVlun+d9TDaDxzZnwreThfT/Jd5WEMoDY2d VFsJy4c2852Lg/Ia7bDr6kpNqDWlS6QwpRIkwsHI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732723AbfHFKBl (ORCPT ); Tue, 6 Aug 2019 06:01:41 -0400 Received: from foss.arm.com ([217.140.110.172]:59470 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732562AbfHFKBi (ORCPT ); Tue, 6 Aug 2019 06:01:38 -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 656751570; Tue, 6 Aug 2019 03:01:38 -0700 (PDT) Received: from filthy-habits.cambridge.arm.com (filthy-habits.cambridge.arm.com [10.1.197.61]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 2A0333F706; Tue, 6 Aug 2019 03:01:37 -0700 (PDT) From: Marc Zyngier To: Thomas Gleixner , Jason Cooper , Julien Thierry , Rob Herring Cc: John Garry , Shameerali Kolothum Thodi , Lokesh Vutla , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 07/12] irqchip/gic-v3: Dynamically allocate PPI partition descriptors Date: Tue, 6 Aug 2019 11:01:16 +0100 Message-Id: <20190806100121.240767-8-maz@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190806100121.240767-1-maz@kernel.org> References: <20190806100121.240767-1-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 Again, PPIs are becoming a variable set. Let's hack the PPI partition code to make the top-level array dynamically allocated. Signed-off-by: Marc Zyngier --- drivers/irqchip/irq-gic-v3.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c index 4253c7f67c86..34f8a96bd747 100644 --- a/drivers/irqchip/irq-gic-v3.c +++ b/drivers/irqchip/irq-gic-v3.c @@ -52,7 +52,7 @@ struct gic_chip_data { u64 flags; bool has_rss; unsigned int ppi_nr; - struct partition_desc *ppi_descs[16]; + struct partition_desc **ppi_descs; }; static struct gic_chip_data gic_data __read_mostly; @@ -1354,7 +1354,8 @@ static int gic_irq_domain_select(struct irq_domain *d, * then we need to match the partition domain. */ if (fwspec->param_count >= 4 && - fwspec->param[0] == 1 && fwspec->param[3] != 0) + fwspec->param[0] == 1 && fwspec->param[3] != 0 && + gic_data.ppi_descs) return d == partition_get_domain(gic_data.ppi_descs[fwspec->param[1]]); return d == gic_data.domain; @@ -1375,6 +1376,9 @@ static int partition_domain_translate(struct irq_domain *d, struct device_node *np; int ret; + if (!gic_data.ppi_descs) + return -ENOMEM; + np = of_find_node_by_phandle(fwspec->param[3]); if (WARN_ON(!np)) return -EINVAL; @@ -1531,6 +1535,10 @@ static void __init gic_populate_ppi_partitions(struct device_node *gic_node) if (!parts_node) return; + gic_data.ppi_descs = kcalloc(gic_data.ppi_nr, sizeof(*gic_data.ppi_descs), GFP_KERNEL); + if (!gic_data.ppi_descs) + return; + nr_parts = of_get_child_count(parts_node); if (!nr_parts) @@ -1582,7 +1590,7 @@ static void __init gic_populate_ppi_partitions(struct device_node *gic_node) part_idx++; } - for (i = 0; i < 16; i++) { + for (i = 0; i < gic_data.ppi_nr; i++) { unsigned int irq; struct partition_desc *desc; struct irq_fwspec ppi_fwspec = { -- 2.20.1