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ACPI/PCI: Set support bit for MSI in support field of _OSC

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Currently linux doesn't have any code to set the "MSI supported" bit in
Support Fireld of _OSC. This patch adds the code for that.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Taku Izumi 2008-10-17 13:52:51 +09:00 committed by Jesse Barnes
parent ab20440c37
commit d389fec6a2
3 changed files with 26 additions and 0 deletions
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21
drivers/pci/msi.c
View file

@ -759,3 +759,24 @@ void pci_msi_init_pci_dev(struct pci_dev *dev)
{
INIT_LIST_HEAD(&dev->msi_list);
}
#ifdef CONFIG_ACPI
#include <linux/acpi.h>
#include <linux/pci-acpi.h>
static void __devinit msi_acpi_init(void)
{
if (acpi_pci_disabled)
return;
pci_osc_support_set(OSC_MSI_SUPPORT);
pcie_osc_support_set(OSC_MSI_SUPPORT);
}
#else
static inline void msi_acpi_init(void) { }
#endif /* CONFIG_ACPI */
void __devinit msi_init(void)
{
if (!pci_msi_enable)
return;
msi_acpi_init();
}

3
drivers/pci/pci.c
View file

@ -1933,6 +1933,9 @@ static int __devinit pci_init(void)
while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
pci_fixup_device(pci_fixup_final, dev);
}
msi_init();
return 0;
}

2
drivers/pci/pci.h
View file

@ -98,9 +98,11 @@ extern unsigned int pci_pm_d3_delay;
#ifdef CONFIG_PCI_MSI
void pci_no_msi(void);
extern void pci_msi_init_pci_dev(struct pci_dev *dev);
extern void __devinit msi_init(void);
#else
static inline void pci_no_msi(void) { }
static inline void pci_msi_init_pci_dev(struct pci_dev *dev) { }
static inline void msi_init(void) { }
#endif
#ifdef CONFIG_PCIEAER