fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / arch / i386 / pci / irq.c

diff --git a/arch/i386/pci/irq.c b/arch/i386/pci/irq.c
index 842c581..99c02d9 100644 (file)
--- a/arch/i386/pci/irq.c
+++ b/arch/i386/pci/irq.c
@@ -4,7 +4,6 @@
  *     (c) 1999--2000 Martin Mares <mj@ucw.cz>
  */
 
-#include <linux/config.h>
 #include <linux/types.h>
 #include <linux/kernel.h>
 #include <linux/pci.h>
@@ -95,13 +94,25 @@ static struct irq_routing_table * __init pirq_find_routing_table(void)
        u8 *addr;
        struct irq_routing_table *rt;
 
+#ifdef CONFIG_XEN
+       if (!is_initial_xendomain())
+               return NULL;
+#endif
        if (pirq_table_addr) {
+#ifdef CONFIG_XEN
+               rt = pirq_check_routing_table((u8 *) isa_bus_to_virt(pirq_table_addr));
+#else
                rt = pirq_check_routing_table((u8 *) __va(pirq_table_addr));
+#endif
                if (rt)
                        return rt;
                printk(KERN_WARNING "PCI: PIRQ table NOT found at pirqaddr\n");
        }
+#ifdef CONFIG_XEN
+       for(addr = (u8 *) isa_bus_to_virt(0xf0000); addr < (u8 *) isa_bus_to_virt(0x100000); addr += 16) {
+#else
        for(addr = (u8 *) __va(0xf0000); addr < (u8 *) __va(0x100000); addr += 16) {
+#endif
                rt = pirq_check_routing_table(addr);
                if (rt)
                        return rt;
@@ -198,14 +209,14 @@ static void write_config_nybble(struct pci_dev *router, unsigned offset, unsigne
  */
 static int pirq_ali_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
 {
-       static unsigned char irqmap[16] = { 0, 9, 3, 10, 4, 5, 7, 6, 1, 11, 0, 12, 0, 14, 0, 15 };
+       static const unsigned char irqmap[16] = { 0, 9, 3, 10, 4, 5, 7, 6, 1, 11, 0, 12, 0, 14, 0, 15 };
 
        return irqmap[read_config_nybble(router, 0x48, pirq-1)];
 }
 
 static int pirq_ali_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)
 {
-       static unsigned char irqmap[16] = { 0, 8, 0, 2, 4, 5, 7, 6, 0, 1, 3, 9, 11, 0, 13, 15 };
+       static const unsigned char irqmap[16] = { 0, 8, 0, 2, 4, 5, 7, 6, 0, 1, 3, 9, 11, 0, 13, 15 };
        unsigned int val = irqmap[irq];
                
        if (val) {
@@ -256,13 +267,13 @@ static int pirq_via_set(struct pci_dev *router, struct pci_dev *dev, int pirq, i
  */
 static int pirq_via586_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
 {
-       static unsigned int pirqmap[5] = { 3, 2, 5, 1, 1 };
+       static const unsigned int pirqmap[5] = { 3, 2, 5, 1, 1 };
        return read_config_nybble(router, 0x55, pirqmap[pirq-1]);
 }
 
 static int pirq_via586_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)
 {
-       static unsigned int pirqmap[5] = { 3, 2, 5, 1, 1 };
+       static const unsigned int pirqmap[5] = { 3, 2, 5, 1, 1 };
        write_config_nybble(router, 0x55, pirqmap[pirq-1], irq);
        return 1;
 }
@@ -274,13 +285,13 @@ static int pirq_via586_set(struct pci_dev *router, struct pci_dev *dev, int pirq
  */
 static int pirq_ite_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
 {
-       static unsigned char pirqmap[4] = { 1, 0, 2, 3 };
+       static const unsigned char pirqmap[4] = { 1, 0, 2, 3 };
        return read_config_nybble(router,0x43, pirqmap[pirq-1]);
 }
 
 static int pirq_ite_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)
 {
-       static unsigned char pirqmap[4] = { 1, 0, 2, 3 };
+       static const unsigned char pirqmap[4] = { 1, 0, 2, 3 };
        write_config_nybble(router, 0x43, pirqmap[pirq-1], irq);
        return 1;
 }
@@ -505,7 +516,7 @@ static int pirq_bios_set(struct pci_dev *router, struct pci_dev *dev, int pirq,
 
 static __init int intel_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)
 {
-       static struct pci_device_id pirq_440gx[] = {
+       static struct pci_device_id __initdata pirq_440gx[] = {
                { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443GX_0) },
                { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443GX_2) },
                { },
@@ -594,7 +605,9 @@ static __init int via_router_probe(struct irq_router *r,
        case PCI_DEVICE_ID_VIA_82C596:
        case PCI_DEVICE_ID_VIA_82C686:
        case PCI_DEVICE_ID_VIA_8231:
+       case PCI_DEVICE_ID_VIA_8233A:
        case PCI_DEVICE_ID_VIA_8235:
+       case PCI_DEVICE_ID_VIA_8237:
                /* FIXME: add new ones for 8233/5 */
                r->name = "VIA";
                r->get = pirq_via_get;
@@ -763,7 +776,7 @@ static void __init pirq_find_router(struct irq_router *r)
        DBG(KERN_DEBUG "PCI: Attempting to find IRQ router for %04x:%04x\n",
            rt->rtr_vendor, rt->rtr_device);
 
-       pirq_router_dev = pci_find_slot(rt->rtr_bus, rt->rtr_devfn);
+       pirq_router_dev = pci_get_bus_and_slot(rt->rtr_bus, rt->rtr_devfn);
        if (!pirq_router_dev) {
                DBG(KERN_DEBUG "PCI: Interrupt router not found at "
                        "%02x:%02x\n", rt->rtr_bus, rt->rtr_devfn);
@@ -783,6 +796,8 @@ static void __init pirq_find_router(struct irq_router *r)
                pirq_router_dev->vendor,
                pirq_router_dev->device,
                pci_name(pirq_router_dev));
+
+       /* The device remains referenced for the kernel lifetime */
 }
 
 static struct irq_info *pirq_get_info(struct pci_dev *dev)
@@ -869,7 +884,7 @@ static int pcibios_lookup_irq(struct pci_dev *dev, int assign)
                for (i = 0; i < 16; i++) {
                        if (!(mask & (1 << i)))
                                continue;
-                       if (pirq_penalty[i] < pirq_penalty[newirq] && can_request_irq(i, SA_SHIRQ))
+                       if (pirq_penalty[i] < pirq_penalty[newirq] && can_request_irq(i, IRQF_SHARED))
                                newirq = i;
                }
        }
@@ -884,6 +899,7 @@ static int pcibios_lookup_irq(struct pci_dev *dev, int assign)
        ((!(pci_probe & PCI_USE_PIRQ_MASK)) || ((1 << irq) & mask)) ) {
                DBG(" -> got IRQ %d\n", irq);
                msg = "Found";
+               eisa_set_level_irq(irq);
        } else if (newirq && r->set && (dev->class >> 8) != PCI_CLASS_DISPLAY_VGA) {
                DBG(" -> assigning IRQ %d", newirq);
                if (r->set(pirq_router_dev, dev, pirq, newirq)) {
@@ -985,10 +1001,6 @@ static void __init pcibios_fixup_irqs(void)
                                                        pci_name(bridge), 'A' + pin, irq);
                                }
                                if (irq >= 0) {
-                                       if (use_pci_vector() &&
-                                               !platform_legacy_irq(irq))
-                                               irq = IO_APIC_VECTOR(irq);
-
                                        printk(KERN_INFO "PCI->APIC IRQ transform: %s[%c] -> IRQ %d\n",
                                                pci_name(dev), 'A' + pin, irq);
                                        dev->irq = irq;
@@ -1149,10 +1161,6 @@ static int pirq_enable_irq(struct pci_dev *dev)
                        }
                        dev = temp_dev;
                        if (irq >= 0) {
-#ifdef CONFIG_PCI_MSI
-                               if (!platform_legacy_irq(irq))
-                                       irq = IO_APIC_VECTOR(irq);
-#endif
                                printk(KERN_INFO "PCI->APIC IRQ transform: %s[%c] -> IRQ %d\n",
                                        pci_name(dev), 'A' + pin, irq);
                                dev->irq = irq;
@@ -1173,33 +1181,3 @@ static int pirq_enable_irq(struct pci_dev *dev)
        }
        return 0;
 }
-
-int pci_vector_resources(int last, int nr_released)
-{
-       int count = nr_released;
-
-       int next = last;
-       int offset = (last % 8);
-
-       while (next < FIRST_SYSTEM_VECTOR) {
-               next += 8;
-#ifdef CONFIG_X86_64
-               if (next == IA32_SYSCALL_VECTOR)
-                       continue;
-#else
-               if (next == SYSCALL_VECTOR)
-                       continue;
-#endif
-               count++;
-               if (next >= FIRST_SYSTEM_VECTOR) {
-                       if (offset%8) {
-                               next = FIRST_DEVICE_VECTOR + offset;
-                               offset++;
-                               continue;
-                       }
-                       count--;
-               }
-       }
-
-       return count;
-}