linux-kernel - [patch 20/37] PCI/MSI: Store properties in device::msi::data

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Date:   Sat, 27 Nov 2021 02:20:39 +0100 (CET)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     Bjorn Helgaas <helgaas@...nel.org>, Marc Zygnier <maz@...nel.org>,
        Alex Williamson <alex.williamson@...hat.com>,
        Kevin Tian <kevin.tian@...el.com>,
        Jason Gunthorpe <jgg@...dia.com>,
        Megha Dey <megha.dey@...el.com>,
        Ashok Raj <ashok.raj@...el.com>, linux-pci@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Santosh Shilimkar <ssantosh@...nel.org>,
        iommu@...ts.linux-foundation.org, dmaengine@...r.kernel.org,
        Stuart Yoder <stuyoder@...il.com>,
        Laurentiu Tudor <laurentiu.tudor@....com>,
        Nishanth Menon <nm@...com>, Tero Kristo <kristo@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, x86@...nel.org,
        Vinod Koul <vkoul@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Will Deacon <will@...nel.org>, Sinan Kaya <okaya@...nel.org>
Subject: [patch 20/37] PCI/MSI: Store properties in device::msi::data

Store the properties which are interesting for various places so the MSI
descriptor fiddling can be removed.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
 drivers/pci/msi/msi.c |    6 ++++++
 1 file changed, 6 insertions(+)

--- a/drivers/pci/msi/msi.c
+++ b/drivers/pci/msi/msi.c
@@ -244,6 +244,8 @@ static void free_msi_irqs(struct pci_dev
 		iounmap(dev->msix_base);
 		dev->msix_base = NULL;
 	}
+
+	dev->dev.msi.data->properties = 0;
 }
 
 static void pci_intx_for_msi(struct pci_dev *dev, int enable)
@@ -372,6 +374,9 @@ msi_setup_entry(struct pci_dev *dev, int
 	if (entry->pci.msi_attrib.can_mask)
 		pci_read_config_dword(dev, entry->pci.mask_pos, &entry->pci.msi_mask);
 
+	dev->dev.msi.data->properties = MSI_PROP_PCI_MSI;
+	if (entry->pci.msi_attrib.is_64)
+		dev->dev.msi.data->properties |= MSI_PROP_64BIT;
 out:
 	kfree(masks);
 	return entry;
@@ -514,6 +519,7 @@ static int msix_setup_entries(struct pci
 		if (masks)
 			curmsk++;
 	}
+	dev->dev.msi.data->properties = MSI_PROP_PCI_MSIX | MSI_PROP_64BIT;
 	ret = 0;
 out:
 	kfree(masks);