Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932901AbaJOC1I (ORCPT ); Tue, 14 Oct 2014 22:27:08 -0400 Received: from szxga01-in.huawei.com ([119.145.14.64]:13815 "EHLO szxga01-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932820AbaJOC00 (ORCPT ); Tue, 14 Oct 2014 22:26:26 -0400 From: Yijing Wang To: Bjorn Helgaas CC: , , Xinwei Hu , Wuyun , , Russell King , , , , , Arnd Bergmann , Thomas Gleixner , "Konrad Rzeszutek Wilk" , , Joerg Roedel , , , Benjamin Herrenschmidt , , , Sebastian Ott , "Tony Luck" , , "David S. Miller" , , Chris Metcalf , Ralf Baechle , Lucas Stach , David Vrabel , "Sergei Shtylyov" , Michael Ellerman , Thierry Reding , "Thomas Petazzoni" , Liviu Dudau , Yijing Wang Subject: [PATCH v3 25/27] Sparc/MSI: Use MSI chip framework to configure MSI/MSI-X irq Date: Wed, 15 Oct 2014 11:07:13 +0800 Message-ID: <1413342435-7876-26-git-send-email-wangyijing@huawei.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1413342435-7876-1-git-send-email-wangyijing@huawei.com> References: <1413342435-7876-1-git-send-email-wangyijing@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.175.100.166] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Use MSI chip framework instead of arch MSI functions to configure MSI/MSI-X irq. So we can manage MSI/MSI-X irq in a unified framework. Signed-off-by: Yijing Wang --- arch/sparc/kernel/pci.c | 14 ++++++++++++-- arch/sparc/kernel/pci_impl.h | 12 ++++++++++++ 2 files changed, 24 insertions(+), 2 deletions(-) diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c index b36365f..a46a148 100644 --- a/arch/sparc/kernel/pci.c +++ b/arch/sparc/kernel/pci.c @@ -656,6 +656,9 @@ struct pci_bus *pci_scan_one_pbm(struct pci_pbm_info *pbm, printk("PCI: Scanning PBM %s\n", node->full_name); +#ifdef CONFIG_PCI_MSI + pbm->msi_chip = &sparc_msi_chip; +#endif pci_add_resource_offset(&resources, &pbm->io_space, pbm->io_space.start); pci_add_resource_offset(&resources, &pbm->mem_space, @@ -905,7 +908,8 @@ 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) +static int sparc_setup_msi_irq(struct msi_chip *chip, + struct pci_dev *pdev, struct msi_desc *desc) { struct pci_pbm_info *pbm = pdev->dev.archdata.host_controller; unsigned int irq; @@ -916,7 +920,7 @@ int arch_setup_msi_irq(struct pci_dev *pdev, struct msi_desc *desc) return pbm->setup_msi_irq(&irq, pdev, desc); } -void arch_teardown_msi_irq(unsigned int irq) +static void sparc_teardown_msi_irq(struct msi_chip *chip, unsigned int irq) { struct msi_desc *entry = irq_get_msi_desc(irq); struct pci_dev *pdev = entry->dev; @@ -925,6 +929,12 @@ 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, +}; + #endif /* !(CONFIG_PCI_MSI) */ static void ali_sound_dma_hack(struct pci_dev *pdev, int set_bit) diff --git a/arch/sparc/kernel/pci_impl.h b/arch/sparc/kernel/pci_impl.h index 75803c7..073bb4e 100644 --- a/arch/sparc/kernel/pci_impl.h +++ b/arch/sparc/kernel/pci_impl.h @@ -55,6 +55,8 @@ struct sparc64_msiq_cookie { struct pci_pbm_info *pbm; unsigned long msiqid; }; + +extern struct msi_chip sparc_msi_chip; #endif struct pci_pbm_info { @@ -132,6 +134,7 @@ struct pci_pbm_info { void *msi_queues; unsigned long *msi_bitmap; unsigned int *msi_irq_table; + struct msi_chip *msi_chip; int (*setup_msi_irq)(unsigned int *irq_p, struct pci_dev *pdev, struct msi_desc *entry); void (*teardown_msi_irq)(unsigned int irq, struct pci_dev *pdev); @@ -153,6 +156,15 @@ struct pci_pbm_info { int numa_node; }; +#ifdef CONFIG_PCI_MSI +static inline struct msi_chip *pci_msi_chip(struct pci_bus *bus) +{ + struct pci_pbm_info *pbm = bus->sysdata; + + return pbm->msi_chip; +} +#endif + extern struct pci_pbm_info *pci_pbm_root; extern int pci_num_pbms; -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/