From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: Bjorn Helgaas <helgaas@kernel.org>, Marc Zygnier <maz@kernel.org>,
Alex Williamson <alex.williamson@redhat.com>,
Kevin Tian <kevin.tian@intel.com>,
Jason Gunthorpe <jgg@nvidia.com>, Megha Dey <megha.dey@intel.com>,
Ashok Raj <ashok.raj@intel.com>,
linux-pci@vger.kernel.org, Cedric Le Goater <clg@kaod.org>,
xen-devel@lists.xenproject.org, Juergen Gross <jgross@suse.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Will Deacon <will@kernel.org>,
Santosh Shilimkar <ssantosh@kernel.org>,
iommu@lists.linux-foundation.org, dmaengine@vger.kernel.org,
Stuart Yoder <stuyoder@gmail.com>,
Laurentiu Tudor <laurentiu.tudor@nxp.com>,
Nishanth Menon <nm@ti.com>, Tero Kristo <kristo@kernel.org>,
linux-arm-kernel@lists.infradead.org,
Vinod Koul <vkoul@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Robin Murphy <robin.murphy@arm.com>,
Sinan Kaya <okaya@kernel.org>
Subject: [patch V2 18/36] genirq/msi: Add msi_device_data::properties
Date: Mon, 6 Dec 2021 23:39:25 +0100 (CET) [thread overview]
Message-ID: <20211206210438.634566968@linutronix.de> (raw)
In-Reply-To: 20211206210307.625116253@linutronix.de
Add a properties field which allows core code to store information for easy
retrieval in order to replace MSI descriptor fiddling.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
V2: Add a setter function to prepare for future changes
---
include/linux/msi.h | 17 +++++++++++++++++
kernel/irq/msi.c | 24 ++++++++++++++++++++++++
2 files changed, 41 insertions(+)
--- a/include/linux/msi.h
+++ b/include/linux/msi.h
@@ -4,6 +4,7 @@
#include <linux/cpumask.h>
#include <linux/list.h>
+#include <linux/bits.h>
#include <asm/msi.h>
/* Dummy shadow structures if an architecture does not define them */
@@ -153,6 +154,22 @@ struct msi_device_data {
int msi_setup_device_data(struct device *dev);
+/* MSI device properties */
+#define MSI_PROP_PCI_MSI BIT(0)
+#define MSI_PROP_PCI_MSIX BIT(1)
+#define MSI_PROP_64BIT BIT(2)
+
+#ifdef CONFIG_GENERIC_MSI_IRQ
+bool msi_device_has_property(struct device *dev, unsigned long prop);
+void msi_device_set_properties(struct device *dev, unsigned long prop);
+#else
+static inline bool msi_device_has_property(struct device *dev, unsigned long prop)
+{
+ return false;
+}
+static inline void msi_device_set_properties(struct device *dev, unsigned long prop) { }
+#endif
+
/* Helpers to hide struct msi_desc implementation details */
#define msi_desc_to_dev(desc) ((desc)->dev)
#define dev_to_msi_list(dev) (&(dev)->msi_list)
--- a/kernel/irq/msi.c
+++ b/kernel/irq/msi.c
@@ -60,6 +60,30 @@ void free_msi_entry(struct msi_desc *ent
kfree(entry);
}
+/**
+ * msi_device_set_properties - Set device specific MSI properties
+ * @dev: Pointer to the device which is queried
+ * @prop: Properties to set
+ */
+void msi_device_set_properties(struct device *dev, unsigned long prop)
+{
+ if (WARN_ON_ONCE(!dev->msi.data))
+ return ;
+ dev->msi.data->properties = 0;
+}
+
+/**
+ * msi_device_has_property - Check whether a device has a specific MSI property
+ * @dev: Pointer to the device which is queried
+ * @prop: Property to check for
+ */
+bool msi_device_has_property(struct device *dev, unsigned long prop)
+{
+ if (!dev->msi.data)
+ return false;
+ return !!(dev->msi.data->properties & prop);
+}
+
void __get_cached_msi_msg(struct msi_desc *entry, struct msi_msg *msg)
{
*msg = entry->msg;
next prev parent reply other threads:[~2021-12-06 22:40 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-06 22:38 [patch V2 00/36] genirq/msi, PCI/MSI: Spring cleaning - Part 2 Thomas Gleixner
2021-12-06 22:38 ` [patch V2 01/36] device: Move MSI related data into a struct Thomas Gleixner
2021-12-06 22:38 ` [patch V2 02/36] device: Add device::msi_data pointer and struct msi_device_data Thomas Gleixner
2021-12-06 22:39 ` [patch V2 03/36] PCI/MSI: Allocate MSI device data on first use Thomas Gleixner
2021-12-07 21:03 ` Bjorn Helgaas
2021-12-06 22:39 ` [patch V2 04/36] platform-msi: " Thomas Gleixner
2021-12-06 22:39 ` [patch V2 05/36] bus: fsl-mc-msi: " Thomas Gleixner
2021-12-06 22:39 ` [patch V2 06/36] soc: ti: ti_sci_inta_msi: " Thomas Gleixner
2021-12-06 22:39 ` [patch V2 07/36] genirq/msi: Provide msi_device_populate/destroy_sysfs() Thomas Gleixner
2021-12-06 22:39 ` [patch V2 08/36] PCI/MSI: Let the irq code handle sysfs groups Thomas Gleixner
2021-12-07 21:04 ` Bjorn Helgaas
2021-12-06 22:39 ` [patch V2 09/36] platform-msi: Let the core " Thomas Gleixner
2021-12-06 22:39 ` [patch V2 10/36] genirq/msi: Remove the original sysfs interfaces Thomas Gleixner
2021-12-06 22:39 ` [patch V2 11/36] platform-msi: Rename functions and clarify comments Thomas Gleixner
2021-12-06 22:39 ` [patch V2 12/36] platform-msi: Store platform private data pointer in msi_device_data Thomas Gleixner
2021-12-06 22:39 ` [patch V2 13/36] genirq/msi: Consolidate MSI descriptor data Thomas Gleixner
2021-12-06 22:39 ` [patch V2 14/36] platform-msi: Use msi_desc::msi_index Thomas Gleixner
2021-12-06 22:39 ` [patch V2 15/36] bus: fsl-mc-msi: " Thomas Gleixner
2021-12-06 22:39 ` [patch V2 16/36] soc: ti: ti_sci_inta_msi: " Thomas Gleixner
2021-12-06 22:39 ` [patch V2 17/36] PCI/MSI: " Thomas Gleixner
2021-12-07 21:04 ` Bjorn Helgaas
2021-12-06 22:39 ` Thomas Gleixner [this message]
2021-12-07 7:52 ` [patch V2 18/36] genirq/msi: Add msi_device_data::properties Greg Kroah-Hartman
2021-12-07 9:04 ` Cédric Le Goater
2021-12-07 12:47 ` Thomas Gleixner
2021-12-07 12:53 ` Thomas Gleixner
2021-12-06 22:39 ` [patch V2 19/36] PCI/MSI: Store properties in device::msi::data Thomas Gleixner
2021-12-07 7:52 ` Greg Kroah-Hartman
2021-12-07 21:05 ` Bjorn Helgaas
2021-12-08 15:58 ` Jason Gunthorpe
2021-12-09 17:53 ` Thomas Gleixner
2021-12-09 21:02 ` Thomas Gleixner
2021-12-06 22:39 ` [patch V2 20/36] x86/pci/XEN: Use device MSI properties Thomas Gleixner
2021-12-08 15:53 ` Jason Gunthorpe
2021-12-08 17:53 ` Thomas Gleixner
2021-12-06 22:39 ` [patch V2 21/36] x86/apic/msi: " Thomas Gleixner
2021-12-08 15:45 ` Jason Gunthorpe
2021-12-06 22:39 ` [patch V2 22/36] genirq/msi: " Thomas Gleixner
2021-12-06 22:39 ` [patch V2 23/36] powerpc/cell/axon_msi: Use MSI device properties Thomas Gleixner
2021-12-07 7:52 ` Greg Kroah-Hartman
2021-12-08 15:54 ` Jason Gunthorpe
2021-12-06 22:39 ` [patch V2 24/36] powerpc/pseries/msi: " Thomas Gleixner
2021-12-08 15:51 ` Jason Gunthorpe
2021-12-06 22:39 ` [patch V2 25/36] PCI/MSI: Provide MSI_FLAG_MSIX_CONTIGUOUS Thomas Gleixner
2021-12-07 21:05 ` Bjorn Helgaas
2021-12-06 22:39 ` [patch V2 26/36] powerpc/pseries/msi: Let core code check for contiguous entries Thomas Gleixner
2021-12-07 7:52 ` Greg Kroah-Hartman
2021-12-06 22:39 ` [patch V2 27/36] genirq/msi: Provide interface to retrieve Linux interrupt number Thomas Gleixner
2021-12-07 7:51 ` Greg Kroah-Hartman
2021-12-06 22:39 ` [patch V2 28/36] PCI/MSI: Use __msi_get_virq() in pci_get_vector() Thomas Gleixner
2021-12-07 7:52 ` Greg Kroah-Hartman
2021-12-07 21:05 ` Bjorn Helgaas
2021-12-06 22:39 ` [patch V2 29/36] PCI/MSI: Simplify pci_irq_get_affinity() Thomas Gleixner
2021-12-07 17:42 ` Cédric Le Goater
2021-12-07 21:19 ` Thomas Gleixner
2021-12-06 22:39 ` [patch V2 30/36] dmaengine: mv_xor_v2: Get rid of msi_desc abuse Thomas Gleixner
2021-12-06 22:39 ` [patch V2 31/36] perf/smmuv3: Use msi_get_virq() Thomas Gleixner
2021-12-06 22:39 ` [patch V2 32/36] iommu/arm-smmu-v3: " Thomas Gleixner
2021-12-06 22:39 ` [patch V2 33/36] mailbox: bcm-flexrm-mailbox: Rework MSI interrupt handling Thomas Gleixner
2021-12-06 22:39 ` [patch V2 34/36] bus: fsl-mc: fsl-mc-allocator: Rework MSI handling Thomas Gleixner
2021-12-06 22:39 ` [patch V2 35/36] soc: ti: ti_sci_inta_msi: Get rid of ti_sci_inta_msi_get_virq() Thomas Gleixner
2021-12-06 22:39 ` [patch V2 36/36] dmaengine: qcom_hidma: Cleanup MSI handling Thomas Gleixner
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20211206210438.634566968@linutronix.de \
--to=tglx@linutronix.de \
--cc=alex.williamson@redhat.com \
--cc=ashok.raj@intel.com \
--cc=clg@kaod.org \
--cc=dmaengine@vger.kernel.org \
--cc=gregkh@linuxfoundation.org \
--cc=helgaas@kernel.org \
--cc=iommu@lists.linux-foundation.org \
--cc=jgg@nvidia.com \
--cc=jgross@suse.com \
--cc=kevin.tian@intel.com \
--cc=kristo@kernel.org \
--cc=laurentiu.tudor@nxp.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pci@vger.kernel.org \
--cc=mark.rutland@arm.com \
--cc=maz@kernel.org \
--cc=megha.dey@intel.com \
--cc=nm@ti.com \
--cc=okaya@kernel.org \
--cc=robin.murphy@arm.com \
--cc=ssantosh@kernel.org \
--cc=stuyoder@gmail.com \
--cc=vkoul@kernel.org \
--cc=will@kernel.org \
--cc=xen-devel@lists.xenproject.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).