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df87ef55 ME |
1 | /* |
2 | * Copyright 2006-2007, Michael Ellerman, IBM Corporation. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License | |
6 | * as published by the Free Software Foundation; either version | |
7 | * 2 of the License, or (at your option) any later version. | |
8 | */ | |
9 | ||
10 | #include <linux/kernel.h> | |
11 | #include <linux/msi.h> | |
ceb93a9f | 12 | #include <linux/pci.h> |
df87ef55 ME |
13 | |
14 | #include <asm/machdep.h> | |
15 | ||
6b2fd7ef | 16 | int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) |
df87ef55 | 17 | { |
e059b105 DA |
18 | struct pci_controller *phb = pci_bus_to_host(dev->bus); |
19 | ||
1f88d586 DA |
20 | if (!phb->controller_ops.setup_msi_irqs || |
21 | !phb->controller_ops.teardown_msi_irqs) { | |
df87ef55 ME |
22 | pr_debug("msi: Platform doesn't provide MSI callbacks.\n"); |
23 | return -ENOSYS; | |
24 | } | |
25 | ||
1c8d7b0a MW |
26 | /* PowerPC doesn't support multiple MSI yet */ |
27 | if (type == PCI_CAP_ID_MSI && nvec > 1) | |
28 | return 1; | |
29 | ||
1f88d586 | 30 | return phb->controller_ops.setup_msi_irqs(dev, nvec, type); |
df87ef55 ME |
31 | } |
32 | ||
33 | void arch_teardown_msi_irqs(struct pci_dev *dev) | |
34 | { | |
e059b105 DA |
35 | struct pci_controller *phb = pci_bus_to_host(dev->bus); |
36 | ||
1f88d586 | 37 | phb->controller_ops.teardown_msi_irqs(dev); |
df87ef55 | 38 | } |