Added some debug printk's for shares_write problems that Steve is seeing

[linux-2.6.git] / arch / i386 / kernel / io_apic.c

diff --git a/arch/i386/kernel/io_apic.c b/arch/i386/kernel/io_apic.c
index 7760864..f600e67 100644 (file)
--- a/arch/i386/kernel/io_apic.c
+++ b/arch/i386/kernel/io_apic.c
@@ -73,7 +73,7 @@ static struct irq_pin_list {
 } irq_2_pin[PIN_MAP_SIZE];
 
 int vector_irq[NR_VECTORS] = { [0 ... NR_VECTORS - 1] = -1};
-#ifdef CONFIG_PCI_USE_VECTOR
+#ifdef CONFIG_PCI_MSI
 #define vector_to_irq(vector)  \
        (platform_legacy_irq(vector) ? vector : vector_irq[vector])
 #else
@@ -1114,7 +1114,7 @@ static inline int IO_APIC_irq_trigger(int irq)
 /* irq_vectors is indexed by the sum of all RTEs in all I/O APICs. */
 u8 irq_vector[NR_IRQ_VECTORS] = { FIRST_DEVICE_VECTOR , 0 };
 
-#ifdef CONFIG_PCI_USE_VECTOR
+#ifdef CONFIG_PCI_MSI
 int assign_irq_vector(int irq)
 #else
 int __init assign_irq_vector(int irq)
@@ -1604,11 +1604,42 @@ static void __init enable_IO_APIC(void)
  */
 void disable_IO_APIC(void)
 {
+       int pin;
        /*
         * Clear the IO-APIC before rebooting:
         */
        clear_IO_APIC();
 
+       /*
+        * If the i82559 is routed through an IOAPIC
+        * Put that IOAPIC in virtual wire mode
+        * so legacy interrups can be delivered.
+        */
+       pin = find_isa_irq_pin(0, mp_ExtINT);
+       if (pin != -1) {
+               struct IO_APIC_route_entry entry;
+               unsigned long flags;
+
+               memset(&entry, 0, sizeof(entry));
+               entry.mask            = 0; /* Enabled */
+               entry.trigger         = 0; /* Edge */
+               entry.irr             = 0;
+               entry.polarity        = 0; /* High */
+               entry.delivery_status = 0;
+               entry.dest_mode       = 0; /* Physical */
+               entry.delivery_mode   = 7; /* ExtInt */
+               entry.vector          = 0;
+               entry.dest.physical.physical_dest = 0;
+
+
+               /*
+                * Add it to the IO-APIC irq-routing table:
+                */
+               spin_lock_irqsave(&ioapic_lock, flags);
+               io_apic_write(0, 0x11+2*pin, *(((int *)&entry)+1));
+               io_apic_write(0, 0x10+2*pin, *(((int *)&entry)+0));
+               spin_unlock_irqrestore(&ioapic_lock, flags);
+       }
        disconnect_bsp_APIC();
 }
 
@@ -1714,7 +1745,7 @@ static void __init setup_ioapic_ids_from_mpc(void)
                reg_00.raw = io_apic_read(apic, 0);
                spin_unlock_irqrestore(&ioapic_lock, flags);
                if (reg_00.bits.ID != mp_ioapics[apic].mpc_apicid)
-                       panic("could not set ID!\n");
+                       printk("could not set ID!\n");
                else
                        printk(" ok.\n");
        }
@@ -1868,7 +1899,7 @@ static void end_level_ioapic_irq (unsigned int irq)
        }
 }
 
-#ifdef CONFIG_PCI_USE_VECTOR
+#ifdef CONFIG_PCI_MSI
 static unsigned int startup_edge_ioapic_vector(unsigned int vector)
 {
        int irq = vector_to_irq(vector);
@@ -2212,7 +2243,7 @@ static inline void check_timer(void)
                return;
        }
        printk(" failed :(.\n");
-       panic("IO-APIC + timer doesn't work! pester mingo@redhat.com");
+       panic("IO-APIC + timer doesn't work! Try using the 'noapic' kernel parameter\n");
 }
 
 /*