xref: /openbmc/linux/arch/powerpc/kernel/msi.c (revision e868d61272caa648214046a096e5a6bfc068dc8c)
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>
12 
13 #include <asm/machdep.h>
14 
15 int arch_msi_check_device(struct pci_dev* dev, int nvec, int type)
16 {
17 	if (!ppc_md.setup_msi_irqs || !ppc_md.teardown_msi_irqs) {
18 		pr_debug("msi: Platform doesn't provide MSI callbacks.\n");
19 		return -ENOSYS;
20 	}
21 
22 	if (ppc_md.msi_check_device) {
23 		pr_debug("msi: Using platform check routine.\n");
24 		return ppc_md.msi_check_device(dev, nvec, type);
25 	}
26 
27         return 0;
28 }
29 
30 int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
31 {
32 	return ppc_md.setup_msi_irqs(dev, nvec, type);
33 }
34 
35 void arch_teardown_msi_irqs(struct pci_dev *dev)
36 {
37 	return ppc_md.teardown_msi_irqs(dev);
38 }
39