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Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
40 lines
989 B
C
40 lines
989 B
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright 2006-2007, Michael Ellerman, IBM Corporation.
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*/
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#include <linux/kernel.h>
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#include <linux/msi.h>
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#include <linux/pci.h>
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#include <asm/machdep.h>
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int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
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{
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struct pci_controller *phb = pci_bus_to_host(dev->bus);
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if (!phb->controller_ops.setup_msi_irqs ||
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!phb->controller_ops.teardown_msi_irqs) {
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pr_debug("msi: Platform doesn't provide MSI callbacks.\n");
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return -ENOSYS;
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}
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/* PowerPC doesn't support multiple MSI yet */
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if (type == PCI_CAP_ID_MSI && nvec > 1)
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return 1;
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return phb->controller_ops.setup_msi_irqs(dev, nvec, type);
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}
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void arch_teardown_msi_irqs(struct pci_dev *dev)
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{
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struct pci_controller *phb = pci_bus_to_host(dev->bus);
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/*
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* We can be called even when arch_setup_msi_irqs() returns -ENOSYS,
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* so check the pointer again.
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*/
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if (phb->controller_ops.teardown_msi_irqs)
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phb->controller_ops.teardown_msi_irqs(dev);
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}
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