Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753351AbaJ0MpX (ORCPT ); Mon, 27 Oct 2014 08:45:23 -0400 Received: from szxga03-in.huawei.com ([119.145.14.66]:39252 "EHLO szxga03-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752930AbaJ0Ml4 (ORCPT ); Mon, 27 Oct 2014 08:41:56 -0400 From: Yijing Wang To: Bjorn Helgaas CC: , , Xinwei Hu , Wuyun , , Russell King , , 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" , Yijing Wang Subject: [PATCH 15/16] tile/MSI: Use MSI controller framework to configure MSI/MSI-X irq Date: Mon, 27 Oct 2014 21:22:21 +0800 Message-ID: <1414416142-31239-16-git-send-email-wangyijing@huawei.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1414416142-31239-1-git-send-email-wangyijing@huawei.com> References: <1414416142-31239-1-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 X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020204.544E3D91.01B0,ss=1,re=0.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0, ip=0.0.0.0, so=2013-05-26 15:14:31, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: a79e6222ac16149ce64752b2f173711a Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Use MSI controller 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/tile/include/asm/pci.h | 2 ++ arch/tile/kernel/pci_gx.c | 18 ++++++++++++++++-- 2 files changed, 18 insertions(+), 2 deletions(-) diff --git a/arch/tile/include/asm/pci.h b/arch/tile/include/asm/pci.h index dfedd7a..3ebd66b 100644 --- a/arch/tile/include/asm/pci.h +++ b/arch/tile/include/asm/pci.h @@ -152,6 +152,7 @@ struct pci_controller { int pio_io_index; /* PIO region index for I/O space access */ #endif + struct msi_controller *msi_ctrl; /* * Mem-Map regions for all the memory controllers so that Linux can * map all of its physical memory space to the PCI bus. @@ -179,6 +180,7 @@ struct pci_controller { int irq_intx_table[4]; }; +extern struct msi_controller tilegx_msi_ctrl; extern struct pci_controller pci_controllers[TILEGX_NUM_TRIO * TILEGX_TRIO_PCIES]; extern gxio_trio_context_t trio_contexts[TILEGX_NUM_TRIO]; extern int num_trio_shims; diff --git a/arch/tile/kernel/pci_gx.c b/arch/tile/kernel/pci_gx.c index e39f9c5..6bf5a24 100644 --- a/arch/tile/kernel/pci_gx.c +++ b/arch/tile/kernel/pci_gx.c @@ -887,6 +887,7 @@ int __init pcibios_init(void) controller->mem_offset); pci_add_resource(&resources, &controller->io_space); controller->first_busno = next_busno; + controller->msi_ctrl = &tilegx_msi_ctrl; bus = pci_scan_root_bus(NULL, next_busno, controller->ops, controller, &resources); controller->root_bus = bus; @@ -1485,7 +1486,15 @@ static struct irq_chip tilegx_msi_chip = { /* TBD: support set_affinity. */ }; -int arch_setup_msi_irq(struct pci_dev *pdev, struct msi_desc *desc) +struct msi_controller *pcibios_msi_controller(struct pci_bus *bus) +{ + struct pci_controller *controller = bus->sysdata; + + return controller->msi_ctrl; +} + +static int tile_setup_msi_irq(struct msi_controller *ctrl, + struct pci_dev *pdev, struct msi_desc *desc) { struct pci_controller *controller; gxio_trio_context_t *trio_context; @@ -1604,7 +1613,12 @@ is_64_failure: return ret; } -void arch_teardown_msi_irq(unsigned int irq) +static void tile_teardown_msi_irq(struct msi_controller *ctrl, unsigned int irq) { irq_free_hwirq(irq); } + +struct msi_controller tilegx_msi_ctrl = { + .setup_irq = tile_setup_msi_irq, + .teardown_irq = tile_teardown_msi_irq, +}; -- 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/