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authorTaku Izumi <izumi.taku@jp.fujitsu.com>2008-10-17 13:52:51 +0900
committerJesse Barnes <jbarnes@virtuousgeek.org>2008-10-22 16:42:35 -0700
commitd389fec6a2aec1ea7d47833f36a0413a619c8c12 (patch)
treef2cb010b0ea9a995cf19bc7c43e59ad47fffe5e2 /drivers
parentab20440c376ff0454cb93904a888212d874fbb6b (diff)
ACPI/PCI: Set support bit for MSI in support field of _OSC
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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/pci/msi.c21
-rw-r--r--drivers/pci/pci.c3
-rw-r--r--drivers/pci/pci.h2
3 files changed, 26 insertions, 0 deletions
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index d2812013fd22..74801f7df9c9 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -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();
+}
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 4db261e13e69..aee73cf251b6 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -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;
}
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index b205ab866a1d..9de87e9f98f5 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -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