diff options
Diffstat (limited to 'arch/mips/pci')
| -rw-r--r-- | arch/mips/pci/pci-xlr.c | 51 |
1 files changed, 50 insertions, 1 deletions
diff --git a/arch/mips/pci/pci-xlr.c b/arch/mips/pci/pci-xlr.c index 38fece1..87404d0 100644 --- a/arch/mips/pci/pci-xlr.c +++ b/arch/mips/pci/pci-xlr.c @@ -36,12 +36,16 @@ #include <linux/pci.h> #include <linux/kernel.h> #include <linux/init.h> +#include <linux/msi.h> #include <linux/mm.h> +#include <linux/irq.h> +#include <linux/irqdesc.h> #include <linux/console.h> #include <asm/io.h> #include <asm/netlogic/interrupt.h> +#include <asm/netlogic/xlr/msidef.h> #include <asm/netlogic/xlr/iomap.h> #include <asm/netlogic/xlr/pic.h> #include <asm/netlogic/xlr/xlr.h> @@ -150,7 +154,7 @@ struct pci_controller nlm_pci_controller = { .io_offset = 0x00000000UL, }; -int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) +static int get_irq_vector(const struct pci_dev *dev) { if (!nlm_chip_is_xls()) return PIC_PCIX_IRQ; /* for XLR just one IRQ*/ @@ -182,6 +186,51 @@ int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) return 0; } +#ifdef CONFIG_PCI_MSI +void destroy_irq(unsigned int irq) +{ + /* nothing to do yet */ +} + +void arch_teardown_msi_irq(unsigned int irq) +{ + destroy_irq(irq); +} + +int arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *desc) +{ + struct msi_msg msg; + int irq, ret; + + irq = get_irq_vector(dev); + if (irq <= 0) + return 1; + + msg.address_hi = MSI_ADDR_BASE_HI; + msg.address_lo = MSI_ADDR_BASE_LO | + MSI_ADDR_DEST_MODE_PHYSICAL | + MSI_ADDR_REDIRECTION_CPU; + + msg.data = MSI_DATA_TRIGGER_EDGE | + MSI_DATA_LEVEL_ASSERT | + MSI_DATA_DELIVERY_FIXED; + + ret = irq_set_msi_desc(irq, desc); + if (ret < 0) { + destroy_irq(irq); + return ret; + } + + write_msi_msg(irq, &msg); + return 0; +} +#endif + +int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) +{ + return get_irq_vector(dev); +} + /* Do platform specific device initialization at pci_enable_device() time */ int pcibios_plat_dev_init(struct pci_dev *dev) { |