From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161739AbcFGQCr (ORCPT ); Tue, 7 Jun 2016 12:02:47 -0400 Received: from mx1.redhat.com ([209.132.183.28]:51112 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1161687AbcFGQCE (ORCPT ); Tue, 7 Jun 2016 12:02:04 -0400 From: Eric Auger To: eric.auger@redhat.com, eric.auger.pro@gmail.com, robin.murphy@arm.com, alex.williamson@redhat.com, will.deacon@arm.com, joro@8bytes.org, tglx@linutronix.de, jason@lakedaemon.net, marc.zyngier@arm.com, christoffer.dall@linaro.org, linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org, Bharat.Bhushan@freescale.com, pranav.sawargaonkar@gmail.com, p.fedin@samsung.com, iommu@lists.linux-foundation.org, Jean-Philippe.Brucker@arm.com, julien.grall@arm.com, yehuday@marvell.com Subject: [PATCH v10 7/9] irqchip/gicv3-its: register the MSI global doorbell Date: Tue, 7 Jun 2016 16:01:26 +0000 Message-Id: <1465315288-5931-8-git-send-email-eric.auger@redhat.com> In-Reply-To: <1465315288-5931-1-git-send-email-eric.auger@redhat.com> References: <1465315288-5931-1-git-send-email-eric.auger@redhat.com> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.27]); Tue, 07 Jun 2016 16:02:04 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch adds the registration of the MSI global doorbell in gicv3-its driver. This will allow the msi layer to iommu_map this doorbell when requested. Signed-off-by: Eric Auger --- drivers/irqchip/irq-gic-v3-its.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index 5eb1f9e..ed9dfce 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -29,6 +29,8 @@ #include #include #include +#include +#include #include #include @@ -1607,6 +1609,7 @@ static int __init its_probe(struct device_node *node, if (of_property_read_bool(node, "msi-controller")) { struct msi_domain_info *info; + phys_addr_t translater; info = kzalloc(sizeof(*info), GFP_KERNEL); if (!info) { @@ -1614,10 +1617,21 @@ static int __init its_probe(struct device_node *node, goto out_free_tables; } + translater = its->phys_base + GITS_TRANSLATER; + err = msi_doorbell_register_global(its, translater, + sizeof(u32), + IOMMU_WRITE | IOMMU_MMIO, true); + if (err) { + kfree(info); + goto out_free_tables; + } + + inner_domain = irq_domain_add_tree(node, &its_domain_ops, its); if (!inner_domain) { err = -ENOMEM; kfree(info); + msi_doorbell_unregister(its); goto out_free_tables; } -- 1.9.1