diff options
author | Thomas Gleixner <tglx@linutronix.de> | 2007-10-11 11:16:36 +0200 |
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committer | Thomas Gleixner <tglx@linutronix.de> | 2007-10-11 11:16:36 +0200 |
commit | fb9aa6f1d4a1e11e66a680460b2c2b2b10b62f79 (patch) | |
tree | e0ad51f39b48a342244cef62099bd1a8a93927db /arch/i386/pci/visws.c | |
parent | 4b60eb8380a0b588a03b6052d7ac93e1964c75b8 (diff) | |
download | op-kernel-dev-fb9aa6f1d4a1e11e66a680460b2c2b2b10b62f79.zip op-kernel-dev-fb9aa6f1d4a1e11e66a680460b2c2b2b10b62f79.tar.gz |
i386: move pci
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/i386/pci/visws.c')
-rw-r--r-- | arch/i386/pci/visws.c | 111 |
1 files changed, 0 insertions, 111 deletions
diff --git a/arch/i386/pci/visws.c b/arch/i386/pci/visws.c deleted file mode 100644 index 8ecb1c7..0000000 --- a/arch/i386/pci/visws.c +++ /dev/null @@ -1,111 +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 "cobalt.h" -#include "lithium.h" - -#include "pci.h" - - -extern struct pci_raw_ops pci_direct_conf1; - -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 inline u8 bridge_swizzle(u8 pin, u8 slot) -{ - return (((pin - 1) + slot) % 4) + 1; -} - -static u8 __init visws_swizzle(struct pci_dev *dev, u8 *pinp) -{ - u8 pin = *pinp; - - while (dev->bus->self) { /* Move up the chain of bridges. */ - pin = bridge_swizzle(pin, PCI_SLOT(dev->devfn)); - dev = dev->bus->self; - } - *pinp = pin; - - return PCI_SLOT(dev->devfn); -} - -static int __init visws_map_irq(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; -} - -void __init pcibios_update_irq(struct pci_dev *dev, int irq) -{ - pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq); -} - -static int __init pcibios_init(void) -{ - /* 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(visws_swizzle, visws_map_irq); - pcibios_resource_survey(); - return 0; -} - -subsys_initcall(pcibios_init); |