Linux-2.6.12-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!
diff --git a/include/asm-x86_64/processor.h b/include/asm-x86_64/processor.h
new file mode 100644
index 0000000..45ab74e
--- /dev/null
+++ b/include/asm-x86_64/processor.h
@@ -0,0 +1,462 @@
+/*
+ * include/asm-x86_64/processor.h
+ *
+ * Copyright (C) 1994 Linus Torvalds
+ */
+
+#ifndef __ASM_X86_64_PROCESSOR_H
+#define __ASM_X86_64_PROCESSOR_H
+
+#include <asm/segment.h>
+#include <asm/page.h>
+#include <asm/types.h>
+#include <asm/sigcontext.h>
+#include <asm/cpufeature.h>
+#include <linux/config.h>
+#include <linux/threads.h>
+#include <asm/msr.h>
+#include <asm/current.h>
+#include <asm/system.h>
+#include <asm/mmsegment.h>
+#include <asm/percpu.h>
+#include <linux/personality.h>
+
+#define TF_MASK 0x00000100
+#define IF_MASK 0x00000200
+#define IOPL_MASK 0x00003000
+#define NT_MASK 0x00004000
+#define VM_MASK 0x00020000
+#define AC_MASK 0x00040000
+#define VIF_MASK 0x00080000 /* virtual interrupt flag */
+#define VIP_MASK 0x00100000 /* virtual interrupt pending */
+#define ID_MASK 0x00200000
+
+#define desc_empty(desc) \
+ (!((desc)->a + (desc)->b))
+
+#define desc_equal(desc1, desc2) \
+ (((desc1)->a == (desc2)->a) && ((desc1)->b == (desc2)->b))
+
+/*
+ * Default implementation of macro that returns current
+ * instruction pointer ("program counter").
+ */
+#define current_text_addr() ({ void *pc; asm volatile("leaq 1f(%%rip),%0\n1:":"=r"(pc)); pc; })
+
+/*
+ * CPU type and hardware bug flags. Kept separately for each CPU.
+ */
+
+struct cpuinfo_x86 {
+ __u8 x86; /* CPU family */
+ __u8 x86_vendor; /* CPU vendor */
+ __u8 x86_model;
+ __u8 x86_mask;
+ int cpuid_level; /* Maximum supported CPUID level, -1=no CPUID */
+ __u32 x86_capability[NCAPINTS];
+ char x86_vendor_id[16];
+ char x86_model_id[64];
+ int x86_cache_size; /* in KB */
+ int x86_clflush_size;
+ int x86_cache_alignment;
+ int x86_tlbsize; /* number of 4K pages in DTLB/ITLB combined(in pages)*/
+ __u8 x86_virt_bits, x86_phys_bits;
+ __u8 x86_num_cores;
+ __u8 x86_apicid;
+ __u32 x86_power;
+ __u32 x86_cpuid_level; /* Max CPUID function supported */
+ unsigned long loops_per_jiffy;
+} ____cacheline_aligned;
+
+#define X86_VENDOR_INTEL 0
+#define X86_VENDOR_CYRIX 1
+#define X86_VENDOR_AMD 2
+#define X86_VENDOR_UMC 3
+#define X86_VENDOR_NEXGEN 4
+#define X86_VENDOR_CENTAUR 5
+#define X86_VENDOR_RISE 6
+#define X86_VENDOR_TRANSMETA 7
+#define X86_VENDOR_NUM 8
+#define X86_VENDOR_UNKNOWN 0xff
+
+#ifdef CONFIG_SMP
+extern struct cpuinfo_x86 cpu_data[];
+#define current_cpu_data cpu_data[smp_processor_id()]
+#else
+#define cpu_data (&boot_cpu_data)
+#define current_cpu_data boot_cpu_data
+#endif
+
+extern char ignore_irq13;
+
+extern void identify_cpu(struct cpuinfo_x86 *);
+extern void print_cpu_info(struct cpuinfo_x86 *);
+extern unsigned int init_intel_cacheinfo(struct cpuinfo_x86 *c);
+
+/*
+ * EFLAGS bits
+ */
+#define X86_EFLAGS_CF 0x00000001 /* Carry Flag */
+#define X86_EFLAGS_PF 0x00000004 /* Parity Flag */
+#define X86_EFLAGS_AF 0x00000010 /* Auxillary carry Flag */
+#define X86_EFLAGS_ZF 0x00000040 /* Zero Flag */
+#define X86_EFLAGS_SF 0x00000080 /* Sign Flag */
+#define X86_EFLAGS_TF 0x00000100 /* Trap Flag */
+#define X86_EFLAGS_IF 0x00000200 /* Interrupt Flag */
+#define X86_EFLAGS_DF 0x00000400 /* Direction Flag */
+#define X86_EFLAGS_OF 0x00000800 /* Overflow Flag */
+#define X86_EFLAGS_IOPL 0x00003000 /* IOPL mask */
+#define X86_EFLAGS_NT 0x00004000 /* Nested Task */
+#define X86_EFLAGS_RF 0x00010000 /* Resume Flag */
+#define X86_EFLAGS_VM 0x00020000 /* Virtual Mode */
+#define X86_EFLAGS_AC 0x00040000 /* Alignment Check */
+#define X86_EFLAGS_VIF 0x00080000 /* Virtual Interrupt Flag */
+#define X86_EFLAGS_VIP 0x00100000 /* Virtual Interrupt Pending */
+#define X86_EFLAGS_ID 0x00200000 /* CPUID detection flag */
+
+/*
+ * Intel CPU features in CR4
+ */
+#define X86_CR4_VME 0x0001 /* enable vm86 extensions */
+#define X86_CR4_PVI 0x0002 /* virtual interrupts flag enable */
+#define X86_CR4_TSD 0x0004 /* disable time stamp at ipl 3 */
+#define X86_CR4_DE 0x0008 /* enable debugging extensions */
+#define X86_CR4_PSE 0x0010 /* enable page size extensions */
+#define X86_CR4_PAE 0x0020 /* enable physical address extensions */
+#define X86_CR4_MCE 0x0040 /* Machine check enable */
+#define X86_CR4_PGE 0x0080 /* enable global pages */
+#define X86_CR4_PCE 0x0100 /* enable performance counters at ipl 3 */
+#define X86_CR4_OSFXSR 0x0200 /* enable fast FPU save and restore */
+#define X86_CR4_OSXMMEXCPT 0x0400 /* enable unmasked SSE exceptions */
+
+/*
+ * Save the cr4 feature set we're using (ie
+ * Pentium 4MB enable and PPro Global page
+ * enable), so that any CPU's that boot up
+ * after us can get the correct flags.
+ */
+extern unsigned long mmu_cr4_features;
+
+static inline void set_in_cr4 (unsigned long mask)
+{
+ mmu_cr4_features |= mask;
+ __asm__("movq %%cr4,%%rax\n\t"
+ "orq %0,%%rax\n\t"
+ "movq %%rax,%%cr4\n"
+ : : "irg" (mask)
+ :"ax");
+}
+
+static inline void clear_in_cr4 (unsigned long mask)
+{
+ mmu_cr4_features &= ~mask;
+ __asm__("movq %%cr4,%%rax\n\t"
+ "andq %0,%%rax\n\t"
+ "movq %%rax,%%cr4\n"
+ : : "irg" (~mask)
+ :"ax");
+}
+
+
+/*
+ * User space process size. 47bits.
+ */
+#define TASK_SIZE (0x800000000000UL)
+
+/* This decides where the kernel will search for a free chunk of vm
+ * space during mmap's.
+ */
+#define IA32_PAGE_OFFSET ((current->personality & ADDR_LIMIT_3GB) ? 0xc0000000 : 0xFFFFe000)
+#define TASK_UNMAPPED_32 PAGE_ALIGN(IA32_PAGE_OFFSET/3)
+#define TASK_UNMAPPED_64 PAGE_ALIGN(TASK_SIZE/3)
+#define TASK_UNMAPPED_BASE \
+ (test_thread_flag(TIF_IA32) ? TASK_UNMAPPED_32 : TASK_UNMAPPED_64)
+
+/*
+ * Size of io_bitmap.
+ */
+#define IO_BITMAP_BITS 65536
+#define IO_BITMAP_BYTES (IO_BITMAP_BITS/8)
+#define IO_BITMAP_LONGS (IO_BITMAP_BYTES/sizeof(long))
+#define IO_BITMAP_OFFSET offsetof(struct tss_struct,io_bitmap)
+#define INVALID_IO_BITMAP_OFFSET 0x8000
+
+struct i387_fxsave_struct {
+ u16 cwd;
+ u16 swd;
+ u16 twd;
+ u16 fop;
+ u64 rip;
+ u64 rdp;
+ u32 mxcsr;
+ u32 mxcsr_mask;
+ u32 st_space[32]; /* 8*16 bytes for each FP-reg = 128 bytes */
+ u32 xmm_space[64]; /* 16*16 bytes for each XMM-reg = 128 bytes */
+ u32 padding[24];
+} __attribute__ ((aligned (16)));
+
+union i387_union {
+ struct i387_fxsave_struct fxsave;
+};
+
+struct tss_struct {
+ u32 reserved1;
+ u64 rsp0;
+ u64 rsp1;
+ u64 rsp2;
+ u64 reserved2;
+ u64 ist[7];
+ u32 reserved3;
+ u32 reserved4;
+ u16 reserved5;
+ u16 io_bitmap_base;
+ /*
+ * The extra 1 is there because the CPU will access an
+ * additional byte beyond the end of the IO permission
+ * bitmap. The extra byte must be all 1 bits, and must
+ * be within the limit. Thus we have:
+ *
+ * 128 bytes, the bitmap itself, for ports 0..0x3ff
+ * 8 bytes, for an extra "long" of ~0UL
+ */
+ unsigned long io_bitmap[IO_BITMAP_LONGS + 1];
+} __attribute__((packed)) ____cacheline_aligned;
+
+extern struct cpuinfo_x86 boot_cpu_data;
+DECLARE_PER_CPU(struct tss_struct,init_tss);
+
+#define ARCH_MIN_TASKALIGN 16
+
+struct thread_struct {
+ unsigned long rsp0;
+ unsigned long rsp;
+ unsigned long userrsp; /* Copy from PDA */
+ unsigned long fs;
+ unsigned long gs;
+ unsigned short es, ds, fsindex, gsindex;
+/* Hardware debugging registers */
+ unsigned long debugreg0;
+ unsigned long debugreg1;
+ unsigned long debugreg2;
+ unsigned long debugreg3;
+ unsigned long debugreg6;
+ unsigned long debugreg7;
+/* fault info */
+ unsigned long cr2, trap_no, error_code;
+/* floating point info */
+ union i387_union i387 __attribute__((aligned(16)));
+/* IO permissions. the bitmap could be moved into the GDT, that would make
+ switch faster for a limited number of ioperm using tasks. -AK */
+ int ioperm;
+ unsigned long *io_bitmap_ptr;
+ unsigned io_bitmap_max;
+/* cached TLS descriptors. */
+ u64 tls_array[GDT_ENTRY_TLS_ENTRIES];
+} __attribute__((aligned(16)));
+
+#define INIT_THREAD {}
+
+#define INIT_MMAP \
+{ &init_mm, 0, 0, NULL, PAGE_SHARED, VM_READ | VM_WRITE | VM_EXEC, 1, NULL, NULL }
+
+#define STACKFAULT_STACK 1
+#define DOUBLEFAULT_STACK 2
+#define NMI_STACK 3
+#define DEBUG_STACK 4
+#define MCE_STACK 5
+#define N_EXCEPTION_STACKS 5 /* hw limit: 7 */
+#define EXCEPTION_STKSZ (PAGE_SIZE << EXCEPTION_STACK_ORDER)
+#define EXCEPTION_STACK_ORDER 0
+
+#define start_thread(regs,new_rip,new_rsp) do { \
+ asm volatile("movl %0,%%fs; movl %0,%%es; movl %0,%%ds": :"r" (0)); \
+ load_gs_index(0); \
+ (regs)->rip = (new_rip); \
+ (regs)->rsp = (new_rsp); \
+ write_pda(oldrsp, (new_rsp)); \
+ (regs)->cs = __USER_CS; \
+ (regs)->ss = __USER_DS; \
+ (regs)->eflags = 0x200; \
+ set_fs(USER_DS); \
+} while(0)
+
+struct task_struct;
+struct mm_struct;
+
+/* Free all resources held by a thread. */
+extern void release_thread(struct task_struct *);
+
+/* Prepare to copy thread state - unlazy all lazy status */
+extern void prepare_to_copy(struct task_struct *tsk);
+
+/*
+ * create a kernel thread without removing it from tasklists
+ */
+extern long kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
+
+/*
+ * Return saved PC of a blocked thread.
+ * What is this good for? it will be always the scheduler or ret_from_fork.
+ */
+#define thread_saved_pc(t) (*(unsigned long *)((t)->thread.rsp - 8))
+
+extern unsigned long get_wchan(struct task_struct *p);
+#define KSTK_EIP(tsk) \
+ (((struct pt_regs *)(tsk->thread.rsp0 - sizeof(struct pt_regs)))->rip)
+#define KSTK_ESP(tsk) -1 /* sorry. doesn't work for syscall. */
+
+
+struct microcode_header {
+ unsigned int hdrver;
+ unsigned int rev;
+ unsigned int date;
+ unsigned int sig;
+ unsigned int cksum;
+ unsigned int ldrver;
+ unsigned int pf;
+ unsigned int datasize;
+ unsigned int totalsize;
+ unsigned int reserved[3];
+};
+
+struct microcode {
+ struct microcode_header hdr;
+ unsigned int bits[0];
+};
+
+typedef struct microcode microcode_t;
+typedef struct microcode_header microcode_header_t;
+
+/* microcode format is extended from prescott processors */
+struct extended_signature {
+ unsigned int sig;
+ unsigned int pf;
+ unsigned int cksum;
+};
+
+struct extended_sigtable {
+ unsigned int count;
+ unsigned int cksum;
+ unsigned int reserved[3];
+ struct extended_signature sigs[0];
+};
+
+/* '6' because it used to be for P6 only (but now covers Pentium 4 as well) */
+#define MICROCODE_IOCFREE _IO('6',0)
+
+
+#define ASM_NOP1 K8_NOP1
+#define ASM_NOP2 K8_NOP2
+#define ASM_NOP3 K8_NOP3
+#define ASM_NOP4 K8_NOP4
+#define ASM_NOP5 K8_NOP5
+#define ASM_NOP6 K8_NOP6
+#define ASM_NOP7 K8_NOP7
+#define ASM_NOP8 K8_NOP8
+
+/* Opteron nops */
+#define K8_NOP1 ".byte 0x90\n"
+#define K8_NOP2 ".byte 0x66,0x90\n"
+#define K8_NOP3 ".byte 0x66,0x66,0x90\n"
+#define K8_NOP4 ".byte 0x66,0x66,0x66,0x90\n"
+#define K8_NOP5 K8_NOP3 K8_NOP2
+#define K8_NOP6 K8_NOP3 K8_NOP3
+#define K8_NOP7 K8_NOP4 K8_NOP3
+#define K8_NOP8 K8_NOP4 K8_NOP4
+
+#define ASM_NOP_MAX 8
+
+/* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */
+extern inline void rep_nop(void)
+{
+ __asm__ __volatile__("rep;nop": : :"memory");
+}
+
+/* Stop speculative execution */
+extern inline void sync_core(void)
+{
+ int tmp;
+ asm volatile("cpuid" : "=a" (tmp) : "0" (1) : "ebx","ecx","edx","memory");
+}
+
+#define cpu_has_fpu 1
+
+#define ARCH_HAS_PREFETCH
+static inline void prefetch(void *x)
+{
+ asm volatile("prefetcht0 %0" :: "m" (*(unsigned long *)x));
+}
+
+#define ARCH_HAS_PREFETCHW 1
+static inline void prefetchw(void *x)
+{
+ alternative_input(ASM_NOP5,
+ "prefetchw (%1)",
+ X86_FEATURE_3DNOW,
+ "r" (x));
+}
+
+#define ARCH_HAS_SPINLOCK_PREFETCH 1
+
+#define spin_lock_prefetch(x) prefetchw(x)
+
+#define cpu_relax() rep_nop()
+
+/*
+ * NSC/Cyrix CPU configuration register indexes
+ */
+#define CX86_CCR0 0xc0
+#define CX86_CCR1 0xc1
+#define CX86_CCR2 0xc2
+#define CX86_CCR3 0xc3
+#define CX86_CCR4 0xe8
+#define CX86_CCR5 0xe9
+#define CX86_CCR6 0xea
+#define CX86_CCR7 0xeb
+#define CX86_DIR0 0xfe
+#define CX86_DIR1 0xff
+#define CX86_ARR_BASE 0xc4
+#define CX86_RCR_BASE 0xdc
+
+/*
+ * NSC/Cyrix CPU indexed register access macros
+ */
+
+#define getCx86(reg) ({ outb((reg), 0x22); inb(0x23); })
+
+#define setCx86(reg, data) do { \
+ outb((reg), 0x22); \
+ outb((data), 0x23); \
+} while (0)
+
+static inline void __monitor(const void *eax, unsigned long ecx,
+ unsigned long edx)
+{
+ /* "monitor %eax,%ecx,%edx;" */
+ asm volatile(
+ ".byte 0x0f,0x01,0xc8;"
+ : :"a" (eax), "c" (ecx), "d"(edx));
+}
+
+static inline void __mwait(unsigned long eax, unsigned long ecx)
+{
+ /* "mwait %eax,%ecx;" */
+ asm volatile(
+ ".byte 0x0f,0x01,0xc9;"
+ : :"a" (eax), "c" (ecx));
+}
+
+#define stack_current() \
+({ \
+ struct thread_info *ti; \
+ asm("andq %%rsp,%0; ":"=r" (ti) : "0" (CURRENT_MASK)); \
+ ti->task; \
+})
+
+#define cache_line_size() (boot_cpu_data.x86_cache_alignment)
+
+extern unsigned long boot_option_idle_override;
+/* Boot loader type from the setup header */
+extern int bootloader_type;
+
+#endif /* __ASM_X86_64_PROCESSOR_H */