diff options
Diffstat (limited to 'arch/x86/pci/visws.c')
| -rw-r--r-- | arch/x86/pci/visws.c | 87 |
1 files changed, 0 insertions, 87 deletions
diff --git a/arch/x86/pci/visws.c b/arch/x86/pci/visws.c deleted file mode 100644 index 3e6d2a6..0000000 --- a/arch/x86/pci/visws.c +++ /dev/null @@ -1,87 +0,0 @@ -/* - * Low-Level PCI Support for SGI Visual Workstation - * - * (c) 1999--2000 Martin Mares <mj@ucw.cz> - */ - -#include <linux/kernel.h> -#include <linux/pci.h> -#include <linux/init.h> - -#include <asm/setup.h> -#include <asm/pci_x86.h> -#include <asm/visws/cobalt.h> -#include <asm/visws/lithium.h> - -static int pci_visws_enable_irq(struct pci_dev *dev) { return 0; } -static void pci_visws_disable_irq(struct pci_dev *dev) { } - -/* int (*pcibios_enable_irq)(struct pci_dev *dev) = &pci_visws_enable_irq; */ -/* void (*pcibios_disable_irq)(struct pci_dev *dev) = &pci_visws_disable_irq; */ - -/* void __init pcibios_penalize_isa_irq(int irq, int active) {} */ - - -unsigned int pci_bus0, pci_bus1; - -static int __init visws_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) -{ - int irq, bus = dev->bus->number; - - pin--; - - /* Nothing useful at PIIX4 pin 1 */ - if (bus == pci_bus0 && slot == 4 && pin == 0) - return -1; - - /* PIIX4 USB is on Bus 0, Slot 4, Line 3 */ - if (bus == pci_bus0 && slot == 4 && pin == 3) { - irq = CO_IRQ(CO_APIC_PIIX4_USB); - goto out; - } - - /* First pin spread down 1 APIC entry per slot */ - if (pin == 0) { - irq = CO_IRQ((bus == pci_bus0 ? CO_APIC_PCIB_BASE0 : - CO_APIC_PCIA_BASE0) + slot); - goto out; - } - - /* lines 1,2,3 from any slot is shared in this twirly pattern */ - if (bus == pci_bus1) { - /* lines 1-3 from devices 0 1 rotate over 2 apic entries */ - irq = CO_IRQ(CO_APIC_PCIA_BASE123 + ((slot + (pin - 1)) % 2)); - } else { /* bus == pci_bus0 */ - /* lines 1-3 from devices 0-3 rotate over 3 apic entries */ - if (slot == 0) - slot = 3; /* same pattern */ - irq = CO_IRQ(CO_APIC_PCIA_BASE123 + ((3 - slot) + (pin - 1) % 3)); - } -out: - printk(KERN_DEBUG "PCI: Bus %d Slot %d Line %d -> IRQ %d\n", bus, slot, pin, irq); - return irq; -} - -int __init pci_visws_init(void) -{ - pcibios_enable_irq = &pci_visws_enable_irq; - pcibios_disable_irq = &pci_visws_disable_irq; - - /* The VISWS supports configuration access type 1 only */ - pci_probe = (pci_probe | PCI_PROBE_CONF1) & - ~(PCI_PROBE_BIOS | PCI_PROBE_CONF2); - - pci_bus0 = li_pcib_read16(LI_PCI_BUSNUM) & 0xff; - pci_bus1 = li_pcia_read16(LI_PCI_BUSNUM) & 0xff; - - printk(KERN_INFO "PCI: Lithium bridge A bus: %u, " - "bridge B (PIIX4) bus: %u\n", pci_bus1, pci_bus0); - - raw_pci_ops = &pci_direct_conf1; - pci_scan_bus_with_sysdata(pci_bus0); - pci_scan_bus_with_sysdata(pci_bus1); - pci_fixup_irqs(pci_common_swizzle, visws_map_irq); - pcibios_resource_survey(); - /* Request bus scan */ - return 1; -} |
