From: Lucas Stach <l.stach@pengutronix.de>
To: Bjorn Helgaas <bhelgaas@google.com>, linux-pci@vger.kernel.org
Cc: Jingoo Han <jingoohan1@gmail.com>,
Pratyush Anand <pratyush.anand@gmail.com>,
patchwork-lst@pengutronix.de, kernel@pengutronix.de
Subject: [PATCH v4 1/5] PCI: allow MSI chip providers to implement their own multivector MSI setup
Date: Mon, 17 Aug 2015 13:06:14 +0200 [thread overview]
Message-ID: <1439809578-13654-2-git-send-email-l.stach@pengutronix.de> (raw)
In-Reply-To: <1439809578-13654-1-git-send-email-l.stach@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Pratyush Anand <pratyush.anand@gmail.com>
---
drivers/pci/msi.c | 3 +++
include/linux/msi.h | 2 ++
2 files changed, 5 insertions(+)
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index f66be868ad21..685a83c459c6 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -121,9 +121,12 @@ void __weak arch_teardown_msi_irq(unsigned int irq)
int __weak arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
{
+ struct msi_controller *chip = pci_msi_controller(dev);
struct msi_desc *entry;
int ret;
+ if (chip && chip->setup_irqs)
+ return chip->setup_irqs(chip, dev, nvec, type);
/*
* If an architecture wants to support multiple MSI, it needs to
* override arch_setup_msi_irqs()
diff --git a/include/linux/msi.h b/include/linux/msi.h
index 8ac4a68ffae2..50fefeb30236 100644
--- a/include/linux/msi.h
+++ b/include/linux/msi.h
@@ -114,6 +114,8 @@ struct msi_controller {
int (*setup_irq)(struct msi_controller *chip, struct pci_dev *dev,
struct msi_desc *desc);
+ int (*setup_irqs)(struct msi_controller *chip, struct pci_dev *dev,
+ int nvec, int type);
void (*teardown_irq)(struct msi_controller *chip, unsigned int irq);
};
--
2.4.6
next prev parent reply other threads:[~2015-08-17 11:06 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-17 11:06 [PATCH v4 0/5] Designware host multivector MSI and 64bit MSI fixes Lucas Stach
2015-08-17 11:06 ` Lucas Stach [this message]
2015-08-17 11:06 ` [PATCH v4 2/5] PCI: designware: factor out MSI msg setup Lucas Stach
2015-08-17 11:06 ` [PATCH v4 3/5] PCI: designware: implement multivector MSI irq setup Lucas Stach
2015-08-17 11:06 ` [PATCH v4 4/5] PCI: designware: change prototype of get_msi_addr Lucas Stach
2015-08-17 11:06 ` [PATCH v4 5/5] PCI: designware: set up high part of MSI target address Lucas Stach
2015-08-18 3:52 ` Pratyush Anand
2015-09-02 22:44 ` [PATCH v4 0/5] Designware host multivector MSI and 64bit MSI fixes Bjorn Helgaas
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