Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 144 insertions, 0 deletions

diff --git a/include/asm-x86_64/hw_irq.h b/include/asm-x86_64/hw_irq.h
new file mode 100644
index 000000000000..2b5cb2865d21
--- /dev/null
+++ b/include/asm-x86_64/hw_irq.h
@@ -0,0 +1,144 @@
+#ifndef _ASM_HW_IRQ_H
+#define _ASM_HW_IRQ_H
+
+/*
+ *      linux/include/asm/hw_irq.h
+ *
+ *      (C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar
+ *
+ *      moved some of the old arch/i386/kernel/irq.h to here. VY
+ *
+ *      IRQ/IPI changes taken from work by Thomas Radke
+ *      <tomsoft@informatik.tu-chemnitz.de>
+ *
+ *      hacked by Andi Kleen for x86-64.
+ * 
+ *  $Id: hw_irq.h,v 1.24 2001/09/14 20:55:03 vojtech Exp $
+ */
+
+#ifndef __ASSEMBLY__
+#include <linux/config.h>
+#include <asm/atomic.h>
+#include <asm/irq.h>
+#include <linux/profile.h>
+#include <linux/smp.h>
+
+struct hw_interrupt_type;
+#endif
+
+/*
+ * IDT vectors usable for external interrupt sources start
+ * at 0x20:
+ */
+#define FIRST_EXTERNAL_VECTOR   0x20
+
+#define IA32_SYSCALL_VECTOR     0x80
+
+
+/*
+ * Vectors 0x20-0x2f are used for ISA interrupts.
+ */
+
+/*
+ * Special IRQ vectors used by the SMP architecture, 0xf0-0xff
+ *
+ *  some of the following vectors are 'rare', they are merged
+ *  into a single vector (CALL_FUNCTION_VECTOR) to save vector space.
+ *  TLB, reschedule and local APIC vectors are performance-critical.
+ *
+ *  Vectors 0xf0-0xf9 are free (reserved for future Linux use).
+ */
+#define SPURIOUS_APIC_VECTOR    0xff
+#define ERROR_APIC_VECTOR       0xfe
+#define INVALIDATE_TLB_VECTOR   0xfd
+#define RESCHEDULE_VECTOR       0xfc
+#define TASK_MIGRATION_VECTOR   0xfb
+#define CALL_FUNCTION_VECTOR    0xfa
+#define KDB_VECTOR      0xf9
+
+#define THERMAL_APIC_VECTOR     0xf0
+
+
+/*
+ * Local APIC timer IRQ vector is on a different priority level,
+ * to work around the 'lost local interrupt if more than 2 IRQ
+ * sources per level' errata.
+ */
+#define LOCAL_TIMER_VECTOR      0xef
+
+/*
+ * First APIC vector available to drivers: (vectors 0x30-0xee)
+ * we start at 0x31 to spread out vectors evenly between priority
+ * levels. (0x80 is the syscall vector)
+ */
+#define FIRST_DEVICE_VECTOR     0x31
+#define FIRST_SYSTEM_VECTOR     0xef   /* duplicated in irq.h */
+
+
+#ifndef __ASSEMBLY__
+extern u8 irq_vector[NR_IRQ_VECTORS];
+#define IO_APIC_VECTOR(irq)     (irq_vector[irq])
+#define AUTO_ASSIGN             -1
+
+/*
+ * Various low-level irq details needed by irq.c, process.c,
+ * time.c, io_apic.c and smp.c
+ *
+ * Interrupt entry/exit code at both C and assembly level
+ */
+
+extern void disable_8259A_irq(unsigned int irq);
+extern void enable_8259A_irq(unsigned int irq);
+extern int i8259A_irq_pending(unsigned int irq);
+extern void make_8259A_irq(unsigned int irq);
+extern void init_8259A(int aeoi);
+extern void FASTCALL(send_IPI_self(int vector));
+extern void init_VISWS_APIC_irqs(void);
+extern void setup_IO_APIC(void);
+extern void disable_IO_APIC(void);
+extern void print_IO_APIC(void);
+extern int IO_APIC_get_PCI_irq_vector(int bus, int slot, int fn);
+extern void send_IPI(int dest, int vector);
+extern void setup_ioapic_dest(void);
+
+extern unsigned long io_apic_irqs;
+
+extern atomic_t irq_err_count;
+extern atomic_t irq_mis_count;
+
+#define IO_APIC_IRQ(x) (((x) >= 16) || ((1<<(x)) & io_apic_irqs))
+
+#define __STR(x) #x
+#define STR(x) __STR(x)
+
+#include <asm/ptrace.h>
+
+#define IRQ_NAME2(nr) nr##_interrupt(void)
+#define IRQ_NAME(nr) IRQ_NAME2(IRQ##nr)
+
+/*
+ *      SMP has a few special interrupts for IPI messages
+ */
+
+#define BUILD_IRQ(nr) \
+asmlinkage void IRQ_NAME(nr); \
+__asm__( \
+"\n.p2align\n" \
+"IRQ" #nr "_interrupt:\n\t" \
+        "push $" #nr "-256 ; " \
+        "jmp common_interrupt");
+
+#if defined(CONFIG_X86_IO_APIC)
+static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i) {
+        if (IO_APIC_IRQ(i))
+                send_IPI_self(IO_APIC_VECTOR(i));
+}
+#else
+static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i) {}
+#endif
+
+#define platform_legacy_irq(irq)        ((irq) < 16)
+
+#endif
+
+#endif /* _ASM_HW_IRQ_H */