From patchwork Fri Dec 10 22:19:34 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 12671117 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 99E9AC433F5 for ; Fri, 10 Dec 2021 22:20:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344942AbhLJWXe (ORCPT ); Fri, 10 Dec 2021 17:23:34 -0500 Received: from Galois.linutronix.de ([193.142.43.55]:51134 "EHLO galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344946AbhLJWXL (ORCPT ); Fri, 10 Dec 2021 17:23:11 -0500 Message-ID: <20211210221815.207838579@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1639174774; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=9W0PenGJOabQuxHdL2FiXZSFBmG9hO0u6DF+sGaPwsQ=; b=FBUn8ueMSvkuKgwtqPtBtR/2nbyMaW5RgnxN6V9NRAVL3aT06KJramowbWbr+ECa5o6EIs DXYcl/M/t7wn2Vy46sN5lfBpNABm5lBAMTicbKnpsMSGgN1CSbq9AH2KcDYTIgtpL5T/gg Ch/1IE6n3cPEQHHpS5XqkAVZJJ//It0q8gllznZV79lvNKaMo2CTqBpMiaG5k13IDARMTU U++JUDGsB1MfnUhSTx34KJzuOScXHOHvLD/bNq35VFk/t5dkD02Rb8ewKOWVWeS2F00NLg 1ugq6mxz7a/+IzhfYxzJ2XwAnbHBpBGQqr4JfosAxyZTEiW6MlVjw4PuHC+yiA== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1639174774; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=9W0PenGJOabQuxHdL2FiXZSFBmG9hO0u6DF+sGaPwsQ=; b=mAKBO9iPA/DwNd5uWhs01QEYd5up3ZunfRyucK5uCYlEOMfTIgFQcEWaz2qGiU58uydKLu Lt6Mpqf0D9cspbBw== From: Thomas Gleixner To: LKML Cc: Bjorn Helgaas , Marc Zygnier , Alex Williamson , Kevin Tian , Jason Gunthorpe , Megha Dey , Ashok Raj , linux-pci@vger.kernel.org, Cedric Le Goater , Greg Kroah-Hartman , Stuart Yoder , Laurentiu Tudor , Juergen Gross , xen-devel@lists.xenproject.org, Arnd Bergmann , Michael Ellerman , Benjamin Herrenschmidt , linuxppc-dev@lists.ozlabs.org, Bjorn Helgaas , Nishanth Menon , Tero Kristo , Santosh Shilimkar , linux-arm-kernel@lists.infradead.org, Vinod Koul , dmaengine@vger.kernel.org, Mark Rutland , Will Deacon , Robin Murphy , Joerg Roedel , iommu@lists.linux-foundation.org, Jassi Brar , Peter Ujfalusi , Sinan Kaya Subject: [patch V3 33/35] bus: fsl-mc: fsl-mc-allocator: Rework MSI handling References: <20211210221642.869015045@linutronix.de> MIME-Version: 1.0 Date: Fri, 10 Dec 2021 23:19:34 +0100 (CET) Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Thomas Gleixner Storing a pointer to the MSI descriptor just to track the Linux interrupt number is daft. Just store the interrupt number and be done with it. Signed-off-by: Thomas Gleixner Reviewed-by: Greg Kroah-Hartman Reviewed-by: Jason Gunthorpe Cc: Stuart Yoder Cc: Laurentiu Tudor --- drivers/bus/fsl-mc/dprc-driver.c | 8 ++++---- drivers/bus/fsl-mc/fsl-mc-allocator.c | 9 ++------- drivers/bus/fsl-mc/fsl-mc-msi.c | 6 +++--- drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c | 4 ++-- drivers/net/ethernet/freescale/dpaa2/dpaa2-ptp.c | 4 +--- drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c | 5 ++--- drivers/soc/fsl/dpio/dpio-driver.c | 8 ++++---- drivers/vfio/fsl-mc/vfio_fsl_mc_intr.c | 4 ++-- include/linux/fsl/mc.h | 4 ++-- 9 files changed, 22 insertions(+), 30 deletions(-) --- a/drivers/bus/fsl-mc/dprc-driver.c +++ b/drivers/bus/fsl-mc/dprc-driver.c @@ -400,7 +400,7 @@ static irqreturn_t dprc_irq0_handler_thr struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev); struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_dev); struct fsl_mc_io *mc_io = mc_dev->mc_io; - struct msi_desc *msi_desc = mc_dev->irqs[0]->msi_desc; + int irq = mc_dev->irqs[0]->virq; dev_dbg(dev, "DPRC IRQ %d triggered on CPU %u\n", irq_num, smp_processor_id()); @@ -409,7 +409,7 @@ static irqreturn_t dprc_irq0_handler_thr return IRQ_HANDLED; mutex_lock(&mc_bus->scan_mutex); - if (!msi_desc || msi_desc->irq != (u32)irq_num) + if (irq != (u32)irq_num) goto out; status = 0; @@ -521,7 +521,7 @@ static int register_dprc_irq_handler(str * function that programs the MSI physically in the device */ error = devm_request_threaded_irq(&mc_dev->dev, - irq->msi_desc->irq, + irq->virq, dprc_irq0_handler, dprc_irq0_handler_thread, IRQF_NO_SUSPEND | IRQF_ONESHOT, @@ -771,7 +771,7 @@ static void dprc_teardown_irq(struct fsl (void)disable_dprc_irq(mc_dev); - devm_free_irq(&mc_dev->dev, irq->msi_desc->irq, &mc_dev->dev); + devm_free_irq(&mc_dev->dev, irq->virq, &mc_dev->dev); fsl_mc_free_irqs(mc_dev); } --- a/drivers/bus/fsl-mc/fsl-mc-allocator.c +++ b/drivers/bus/fsl-mc/fsl-mc-allocator.c @@ -350,7 +350,6 @@ int fsl_mc_populate_irq_pool(struct fsl_ unsigned int irq_count) { unsigned int i; - struct msi_desc *msi_desc; struct fsl_mc_device_irq *irq_resources; struct fsl_mc_device_irq *mc_dev_irq; int error; @@ -388,16 +387,12 @@ int fsl_mc_populate_irq_pool(struct fsl_ mc_dev_irq->resource.type = res_pool->type; mc_dev_irq->resource.data = mc_dev_irq; mc_dev_irq->resource.parent_pool = res_pool; + mc_dev_irq->virq = msi_get_virq(&mc_bus_dev->dev, i); + mc_dev_irq->resource.id = mc_dev_irq->virq; INIT_LIST_HEAD(&mc_dev_irq->resource.node); list_add_tail(&mc_dev_irq->resource.node, &res_pool->free_list); } - for_each_msi_entry(msi_desc, &mc_bus_dev->dev) { - mc_dev_irq = &irq_resources[msi_desc->msi_index]; - mc_dev_irq->msi_desc = msi_desc; - mc_dev_irq->resource.id = msi_desc->irq; - } - res_pool->max_count = irq_count; res_pool->free_count = irq_count; mc_bus->irq_resources = irq_resources; --- a/drivers/bus/fsl-mc/fsl-mc-msi.c +++ b/drivers/bus/fsl-mc/fsl-mc-msi.c @@ -58,11 +58,11 @@ static void fsl_mc_msi_update_dom_ops(st } static void __fsl_mc_msi_write_msg(struct fsl_mc_device *mc_bus_dev, - struct fsl_mc_device_irq *mc_dev_irq) + struct fsl_mc_device_irq *mc_dev_irq, + struct msi_desc *msi_desc) { int error; struct fsl_mc_device *owner_mc_dev = mc_dev_irq->mc_dev; - struct msi_desc *msi_desc = mc_dev_irq->msi_desc; struct dprc_irq_cfg irq_cfg; /* @@ -129,7 +129,7 @@ static void fsl_mc_msi_write_msg(struct /* * Program the MSI (paddr, value) pair in the device: */ - __fsl_mc_msi_write_msg(mc_bus_dev, mc_dev_irq); + __fsl_mc_msi_write_msg(mc_bus_dev, mc_dev_irq, msi_desc); } static void fsl_mc_msi_update_chip_ops(struct msi_domain_info *info) --- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c +++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c @@ -4246,7 +4246,7 @@ static int dpaa2_eth_setup_irqs(struct f } irq = ls_dev->irqs[0]; - err = devm_request_threaded_irq(&ls_dev->dev, irq->msi_desc->irq, + err = devm_request_threaded_irq(&ls_dev->dev, irq->virq, NULL, dpni_irq0_handler_thread, IRQF_NO_SUSPEND | IRQF_ONESHOT, dev_name(&ls_dev->dev), &ls_dev->dev); @@ -4273,7 +4273,7 @@ static int dpaa2_eth_setup_irqs(struct f return 0; free_irq: - devm_free_irq(&ls_dev->dev, irq->msi_desc->irq, &ls_dev->dev); + devm_free_irq(&ls_dev->dev, irq->virq, &ls_dev->dev); free_mc_irq: fsl_mc_free_irqs(ls_dev); --- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-ptp.c +++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-ptp.c @@ -129,7 +129,6 @@ static irqreturn_t dpaa2_ptp_irq_handler static int dpaa2_ptp_probe(struct fsl_mc_device *mc_dev) { struct device *dev = &mc_dev->dev; - struct fsl_mc_device_irq *irq; struct ptp_qoriq *ptp_qoriq; struct device_node *node; void __iomem *base; @@ -177,8 +176,7 @@ static int dpaa2_ptp_probe(struct fsl_mc goto err_unmap; } - irq = mc_dev->irqs[0]; - ptp_qoriq->irq = irq->msi_desc->irq; + ptp_qoriq->irq = mc_dev->irqs[0]->virq; err = request_threaded_irq(ptp_qoriq->irq, NULL, dpaa2_ptp_irq_handler_thread, --- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c +++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c @@ -1553,8 +1553,7 @@ static int dpaa2_switch_setup_irqs(struc irq = sw_dev->irqs[DPSW_IRQ_INDEX_IF]; - err = devm_request_threaded_irq(dev, irq->msi_desc->irq, - NULL, + err = devm_request_threaded_irq(dev, irq->virq, NULL, dpaa2_switch_irq0_handler_thread, IRQF_NO_SUSPEND | IRQF_ONESHOT, dev_name(dev), dev); @@ -1580,7 +1579,7 @@ static int dpaa2_switch_setup_irqs(struc return 0; free_devm_irq: - devm_free_irq(dev, irq->msi_desc->irq, dev); + devm_free_irq(dev, irq->virq, dev); free_irq: fsl_mc_free_irqs(sw_dev); return err; --- a/drivers/soc/fsl/dpio/dpio-driver.c +++ b/drivers/soc/fsl/dpio/dpio-driver.c @@ -88,7 +88,7 @@ static void unregister_dpio_irq_handlers irq = dpio_dev->irqs[0]; /* clear the affinity hint */ - irq_set_affinity_hint(irq->msi_desc->irq, NULL); + irq_set_affinity_hint(irq->virq, NULL); } static int register_dpio_irq_handlers(struct fsl_mc_device *dpio_dev, int cpu) @@ -98,7 +98,7 @@ static int register_dpio_irq_handlers(st irq = dpio_dev->irqs[0]; error = devm_request_irq(&dpio_dev->dev, - irq->msi_desc->irq, + irq->virq, dpio_irq_handler, 0, dev_name(&dpio_dev->dev), @@ -111,10 +111,10 @@ static int register_dpio_irq_handlers(st } /* set the affinity hint */ - if (irq_set_affinity_hint(irq->msi_desc->irq, cpumask_of(cpu))) + if (irq_set_affinity_hint(irq->virq, cpumask_of(cpu))) dev_err(&dpio_dev->dev, "irq_set_affinity failed irq %d cpu %d\n", - irq->msi_desc->irq, cpu); + irq->virq, cpu); return 0; } --- a/drivers/vfio/fsl-mc/vfio_fsl_mc_intr.c +++ b/drivers/vfio/fsl-mc/vfio_fsl_mc_intr.c @@ -67,7 +67,7 @@ static int vfio_set_trigger(struct vfio_ int hwirq; int ret; - hwirq = vdev->mc_dev->irqs[index]->msi_desc->irq; + hwirq = vdev->mc_dev->irqs[index]->virq; if (irq->trigger) { free_irq(hwirq, irq); kfree(irq->name); @@ -137,7 +137,7 @@ static int vfio_fsl_mc_set_irq_trigger(s return vfio_set_trigger(vdev, index, fd); } - hwirq = vdev->mc_dev->irqs[index]->msi_desc->irq; + hwirq = vdev->mc_dev->irqs[index]->virq; irq = &vdev->mc_irqs[index]; --- a/include/linux/fsl/mc.h +++ b/include/linux/fsl/mc.h @@ -91,13 +91,13 @@ struct fsl_mc_resource { /** * struct fsl_mc_device_irq - MC object device message-based interrupt - * @msi_desc: pointer to MSI descriptor allocated by fsl_mc_msi_alloc_descs() + * @virq: Linux virtual interrupt number * @mc_dev: MC object device that owns this interrupt * @dev_irq_index: device-relative IRQ index * @resource: MC generic resource associated with the interrupt */ struct fsl_mc_device_irq { - struct msi_desc *msi_desc; + unsigned int virq; struct fsl_mc_device *mc_dev; u8 dev_irq_index; struct fsl_mc_resource resource;