mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
39 lines
989 B
39 lines
989 B
// SPDX-License-Identifier: GPL-2.0-or-later |
|
/* |
|
* Copyright 2006-2007, Michael Ellerman, IBM Corporation. |
|
*/ |
|
|
|
#include <linux/kernel.h> |
|
#include <linux/msi.h> |
|
#include <linux/pci.h> |
|
|
|
#include <asm/machdep.h> |
|
|
|
int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) |
|
{ |
|
struct pci_controller *phb = pci_bus_to_host(dev->bus); |
|
|
|
if (!phb->controller_ops.setup_msi_irqs || |
|
!phb->controller_ops.teardown_msi_irqs) { |
|
pr_debug("msi: Platform doesn't provide MSI callbacks.\n"); |
|
return -ENOSYS; |
|
} |
|
|
|
/* PowerPC doesn't support multiple MSI yet */ |
|
if (type == PCI_CAP_ID_MSI && nvec > 1) |
|
return 1; |
|
|
|
return phb->controller_ops.setup_msi_irqs(dev, nvec, type); |
|
} |
|
|
|
void arch_teardown_msi_irqs(struct pci_dev *dev) |
|
{ |
|
struct pci_controller *phb = pci_bus_to_host(dev->bus); |
|
|
|
/* |
|
* We can be called even when arch_setup_msi_irqs() returns -ENOSYS, |
|
* so check the pointer again. |
|
*/ |
|
if (phb->controller_ops.teardown_msi_irqs) |
|
phb->controller_ops.teardown_msi_irqs(dev); |
|
}
|
|
|