From d389fec6a2aec1ea7d47833f36a0413a619c8c12 Mon Sep 17 00:00:00 2001 From: Taku Izumi Date: Fri, 17 Oct 2008 13:52:51 +0900 Subject: 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 Signed-off-by: Taku Izumi Signed-off-by: Jesse Barnes --- drivers/pci/msi.c | 21 +++++++++++++++++++++ drivers/pci/pci.c | 3 +++ drivers/pci/pci.h | 2 ++ 3 files changed, 26 insertions(+) (limited to 'drivers') diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index d2812013fd2..74801f7df9c 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 +#include +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 4db261e13e6..aee73cf251b 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 b205ab866a1..9de87e9f98f 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 -- cgit v1.2.3