linux-kernel - [RFC PATCH 18/20] Sparc/MSI: Use msi_chip instead of arch func to configure MSI/MSI-X

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Message-ID: <1407828373-24322-19-git-send-email-wangyijing@huawei.com>
Date:	Tue, 12 Aug 2014 15:26:11 +0800
From:	Yijing Wang <wangyijing@...wei.com>
To:	Bjorn Helgaas <bhelgaas@...gle.com>
CC:	<linux-kernel@...r.kernel.org>, Xinwei Hu <huxinwei@...wei.com>,
	Wuyun <wuyun.wu@...wei.com>, <linux-pci@...r.kernel.org>,
	Marc Zyngier <marc.zyngier@....com>,
	<linux-arm-kernel@...ts.infradead.org>,
	Russell King <linux@....linux.org.uk>,
	<arnab.basu@...escale.com>, <x86@...nel.org>,
	"Arnd Bergmann" <arnd@...db.de>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	<xen-devel@...ts.xenproject.org>, Joerg Roedel <joro@...tes.org>,
	<iommu@...ts.linux-foundation.org>, <linux-mips@...ux-mips.org>,
	"Benjamin Herrenschmidt" <benh@...nel.crashing.org>,
	<linuxppc-dev@...ts.ozlabs.org>, <linux-s390@...r.kernel.org>,
	Sebastian Ott <sebott@...ux.vnet.ibm.com>,
	"Tony Luck" <tony.luck@...el.com>, <linux-ia64@...r.kernel.org>,
	"David S. Miller" <davem@...emloft.net>,
	<sparclinux@...r.kernel.org>, Chris Metcalf <cmetcalf@...era.com>,
	Yijing Wang <wangyijing@...wei.com>
Subject: [RFC PATCH 18/20] Sparc/MSI: Use msi_chip instead of arch func to configure MSI/MSI-X

Introduce a new struct msi_chip sparc_msi_chip instead of weak arch
functions to configure MSI/MSI-X.

Signed-off-by: Yijing Wang <wangyijing@...wei.com>
---
 arch/sparc/kernel/pci.c |   18 ++++++++++++++----
 1 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c
index 857ad77..9eabd22 100644
--- a/arch/sparc/kernel/pci.c
+++ b/arch/sparc/kernel/pci.c
@@ -839,18 +839,18 @@ int pci_domain_nr(struct pci_bus *pbus)
 EXPORT_SYMBOL(pci_domain_nr);
 
 #ifdef CONFIG_PCI_MSI
-int arch_setup_msi_irq(struct pci_dev *pdev, struct msi_desc *desc)
+int sparc_setup_msi_irq(struct device *dev, struct msi_desc *desc)
 {
-	struct pci_pbm_info *pbm = pdev->dev.archdata.host_controller;
+	struct pci_pbm_info *pbm = dev->archdata.host_controller;
 	unsigned int irq;
 
 	if (!pbm->setup_msi_irq)
 		return -EINVAL;
 
-	return pbm->setup_msi_irq(&irq, pdev, desc);
+	return pbm->setup_msi_irq(&irq, to_pci_dev(dev), desc);
 }
 
-void arch_teardown_msi_irq(unsigned int irq)
+void sparc_teardown_msi_irq(unsigned int irq)
 {
 	struct msi_desc *entry = irq_get_msi_desc(irq);
 	struct pci_dev *pdev = entry->dev;
@@ -859,6 +859,16 @@ void arch_teardown_msi_irq(unsigned int irq)
 	if (pbm->teardown_msi_irq)
 		pbm->teardown_msi_irq(irq, pdev);
 }
+
+struct msi_chip sparc_msi_chip = {
+	.setup_irq = sparc_setup_msi_irq,
+	.teardown_irq = sparc_teardown_msi_irq,
+};
+
+struct msi_chip *arch_get_match_msi_chip(struct device *dev)
+{
+	return &sparc_msi_chip;
+}
 #endif /* !(CONFIG_PCI_MSI) */
 
 static void ali_sound_dma_hack(struct pci_dev *pdev, int set_bit)
-- 
1.7.1

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