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>,
Niklas Schnelle <schnelle@linux.ibm.com>,
linux-s390@vger.kernel.org, Heiko Carstens <hca@linux.ibm.com>,
Christian Borntraeger <borntraeger@de.ibm.com>,
Logan Gunthorpe <logang@deltatee.com>,
Jon Mason <jdmason@kudzu.us>, Dave Jiang <dave.jiang@intel.com>,
Allen Hubbe <allenbh@gmail.com>,
linux-ntb@googlegroups.com
Subject: [patch V2 21/31] soc: ti: ti_sci_inta_msi: Rework MSI descriptor allocation
Date: Mon, 6 Dec 2021 23:51:36 +0100 (CET) [thread overview]
Message-ID: <20211206210748.737904583@linutronix.de> (raw)
In-Reply-To: 20211206210600.123171746@linutronix.de
Protect the allocation properly and use the core allocation and free
mechanism.
No functional change intended.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
drivers/soc/ti/ti_sci_inta_msi.c | 71 +++++++++++++--------------------------
1 file changed, 25 insertions(+), 46 deletions(-)
--- a/drivers/soc/ti/ti_sci_inta_msi.c
+++ b/drivers/soc/ti/ti_sci_inta_msi.c
@@ -51,6 +51,7 @@ struct irq_domain *ti_sci_inta_msi_creat
struct irq_domain *domain;
ti_sci_inta_msi_update_chip_ops(info);
+ info->flags |= MSI_FLAG_FREE_MSI_DESCS;
domain = msi_create_irq_domain(fwnode, info, parent);
if (domain)
@@ -60,50 +61,31 @@ struct irq_domain *ti_sci_inta_msi_creat
}
EXPORT_SYMBOL_GPL(ti_sci_inta_msi_create_irq_domain);
-static void ti_sci_inta_msi_free_descs(struct device *dev)
-{
- struct msi_desc *desc, *tmp;
-
- list_for_each_entry_safe(desc, tmp, dev_to_msi_list(dev), list) {
- list_del(&desc->list);
- free_msi_entry(desc);
- }
-}
-
static int ti_sci_inta_msi_alloc_descs(struct device *dev,
struct ti_sci_resource *res)
{
- struct msi_desc *msi_desc;
+ struct msi_desc msi_desc;
int set, i, count = 0;
+ memset(&msi_desc, 0, sizeof(msi_desc));
+
for (set = 0; set < res->sets; set++) {
- for (i = 0; i < res->desc[set].num; i++) {
- msi_desc = alloc_msi_entry(dev, 1, NULL);
- if (!msi_desc) {
- ti_sci_inta_msi_free_descs(dev);
- return -ENOMEM;
- }
-
- msi_desc->msi_index = res->desc[set].start + i;
- INIT_LIST_HEAD(&msi_desc->list);
- list_add_tail(&msi_desc->list, dev_to_msi_list(dev));
- count++;
+ for (i = 0; i < res->desc[set].num; i++, count++) {
+ msi_desc.msi_index = res->desc[set].start + i;
+ if (msi_add_msi_desc(dev, &msi_desc))
+ goto fail;
}
- for (i = 0; i < res->desc[set].num_sec; i++) {
- msi_desc = alloc_msi_entry(dev, 1, NULL);
- if (!msi_desc) {
- ti_sci_inta_msi_free_descs(dev);
- return -ENOMEM;
- }
-
- msi_desc->msi_index = res->desc[set].start_sec + i;
- INIT_LIST_HEAD(&msi_desc->list);
- list_add_tail(&msi_desc->list, dev_to_msi_list(dev));
- count++;
+
+ for (i = 0; i < res->desc[set].num_sec; i++, count++) {
+ msi_desc.msi_index = res->desc[set].start_sec + i;
+ if (msi_add_msi_desc(dev, &msi_desc))
+ goto fail;
}
}
-
return count;
+fail:
+ msi_free_msi_descs(dev);
+ return -ENOMEM;
}
int ti_sci_inta_msi_domain_alloc_irqs(struct device *dev,
@@ -124,20 +106,18 @@ int ti_sci_inta_msi_domain_alloc_irqs(st
if (ret)
return ret;
+ msi_lock_descs(dev);
nvec = ti_sci_inta_msi_alloc_descs(dev, res);
- if (nvec <= 0)
- return nvec;
-
- ret = msi_domain_alloc_irqs(msi_domain, dev, nvec);
- if (ret) {
- dev_err(dev, "Failed to allocate IRQs %d\n", ret);
- goto cleanup;
+ if (nvec <= 0) {
+ ret = nvec;
+ goto unlock;
}
- return 0;
-
-cleanup:
- ti_sci_inta_msi_free_descs(&pdev->dev);
+ ret = msi_domain_alloc_irqs_descs_locked(msi_domain, dev, nvec);
+ if (ret)
+ dev_err(dev, "Failed to allocate IRQs %d\n", ret);
+unlock:
+ msi_unlock_descs(dev);
return ret;
}
EXPORT_SYMBOL_GPL(ti_sci_inta_msi_domain_alloc_irqs);
@@ -145,6 +125,5 @@ EXPORT_SYMBOL_GPL(ti_sci_inta_msi_domain
void ti_sci_inta_msi_domain_free_irqs(struct device *dev)
{
msi_domain_free_irqs(dev->msi.domain, dev);
- ti_sci_inta_msi_free_descs(dev);
}
EXPORT_SYMBOL_GPL(ti_sci_inta_msi_domain_free_irqs);
next prev parent reply other threads:[~2021-12-06 22:51 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-06 22:51 [patch V2 00/31] genirq/msi, PCI/MSI: Spring cleaning - Part 3 Thomas Gleixner
2021-12-06 22:51 ` [patch V2 01/31] genirq/msi: Move descriptor list to struct msi_device_data Thomas Gleixner
2021-12-06 22:51 ` [patch V2 02/31] genirq/msi: Add mutex for MSI list protection Thomas Gleixner
2021-12-09 0:47 ` Jason Gunthorpe
2021-12-09 20:07 ` Thomas Gleixner
2021-12-06 22:51 ` [patch V2 03/31] genirq/msi: Provide msi_domain_alloc/free_irqs_descs_locked() Thomas Gleixner
2021-12-06 22:51 ` [patch V2 04/31] genirq/msi: Provide a set of advanced MSI accessors and iterators Thomas Gleixner
2021-12-06 22:51 ` [patch V2 05/31] genirq/msi: Provide msi_alloc_msi_desc() and a simple allocator Thomas Gleixner
2021-12-06 22:51 ` [patch V2 06/31] genirq/msi: Provide domain flags to allocate/free MSI descriptors automatically Thomas Gleixner
2021-12-06 22:51 ` [patch V2 07/31] PCI/MSI: Protect MSI operations Thomas Gleixner
2021-12-07 21:06 ` Bjorn Helgaas
2021-12-06 22:51 ` [patch V2 08/31] PCI/MSI: Use msi_add_msi_desc() Thomas Gleixner
2021-12-07 21:07 ` Bjorn Helgaas
2021-12-06 22:51 ` [patch V2 09/31] PCI/MSI: Let core code free MSI descriptors Thomas Gleixner
2021-12-07 21:07 ` Bjorn Helgaas
2021-12-06 22:51 ` [patch V2 10/31] PCI/MSI: Use msi_on_each_desc() Thomas Gleixner
2021-12-07 21:07 ` Bjorn Helgaas
2021-12-06 22:51 ` [patch V2 11/31] x86/pci/xen: Use msi_for_each_desc() Thomas Gleixner
2021-12-06 22:51 ` [patch V2 12/31] xen/pcifront: Rework MSI handling Thomas Gleixner
2021-12-06 22:51 ` [patch V2 13/31] s390/pci: Rework MSI descriptor walk Thomas Gleixner
2021-12-06 22:51 ` [patch V2 14/31] powerpc/4xx/hsta: Rework MSI handling Thomas Gleixner
2021-12-06 22:51 ` [patch V2 15/31] powerpc/cell/axon_msi: Convert to msi_on_each_desc() Thomas Gleixner
2021-12-06 22:51 ` [patch V2 16/31] powerpc/pasemi/msi: Convert to msi_on_each_dec() Thomas Gleixner
2021-12-06 22:51 ` [patch V2 17/31] powerpc/fsl_msi: Use msi_for_each_desc() Thomas Gleixner
2021-12-06 22:51 ` [patch V2 18/31] powerpc/mpic_u3msi: Use msi_for_each-desc() Thomas Gleixner
2021-12-06 22:51 ` [patch V2 19/31] PCI: hv: Rework MSI handling Thomas Gleixner
2021-12-07 21:08 ` Bjorn Helgaas
2021-12-06 22:51 ` [patch V2 20/31] NTB/msi: Convert to msi_on_each_desc() Thomas Gleixner
2021-12-06 22:51 ` Thomas Gleixner [this message]
2021-12-15 20:50 ` [patch V2 21/31] soc: ti: ti_sci_inta_msi: Rework MSI descriptor allocation Thomas Gleixner
2021-12-06 22:51 ` [patch V2 22/31] soc: ti: ti_sci_inta_msi: Remove ti_sci_inta_msi_domain_free_irqs() Thomas Gleixner
2021-12-06 22:51 ` [patch V2 23/31] bus: fsl-mc-msi: Simplify MSI descriptor handling Thomas Gleixner
2021-12-06 22:51 ` [patch V2 24/31] platform-msi: Let core code handle MSI descriptors Thomas Gleixner
2021-12-06 22:51 ` [patch V2 25/31] platform-msi: Simplify platform device MSI code Thomas Gleixner
2021-12-06 22:51 ` [patch V2 26/31] genirq/msi: Make interrupt allocation less convoluted Thomas Gleixner
2021-12-06 22:51 ` [patch V2 27/31] genirq/msi: Convert to new functions Thomas Gleixner
2021-12-06 22:51 ` [patch V2 28/31] genirq/msi: Mop up old interfaces Thomas Gleixner
2021-12-06 22:51 ` [patch V2 29/31] genirq/msi: Add abuse prevention comment to msi header Thomas Gleixner
2021-12-07 8:21 ` Greg Kroah-Hartman
2021-12-07 12:46 ` Thomas Gleixner
2021-12-06 22:51 ` [patch V2 30/31] genirq/msi: Simplify sysfs handling Thomas Gleixner
2022-01-10 18:12 ` [patch] genirq/msi: Populate sysfs entry only once Thomas Gleixner
2022-01-10 18:15 ` Borislav Petkov
2022-01-11 8:57 ` Greg Kroah-Hartman
2022-01-11 9:02 ` Cédric Le Goater
2022-01-12 0:05 ` Kunihiko Hayashi
2022-01-18 23:59 ` Thomas Gleixner
2022-01-19 8:45 ` Kunihiko Hayashi
2021-12-06 22:51 ` [patch V2 31/31] genirq/msi: Convert storage to xarray Thomas Gleixner
2021-12-09 1:01 ` [patch V2 00/31] genirq/msi, PCI/MSI: Spring cleaning - Part 3 Jason Gunthorpe
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