1 files changed, 98 insertions, 89 deletions

diff --git a/include/asm-i386/processor.h b/include/asm-i386/processor.h
index 11bf899de8aa..70f3515c3db0 100644
--- a/include/asm-i386/processor.h
+++ b/include/asm-i386/processor.h
@@ -21,6 +21,7 @@
 #include <asm/percpu.h>
 #include <linux/cpumask.h>
 #include <linux/init.h>
+#include <asm/processor-flags.h>
 
 /* flag for disabling the tsc */
 extern int tsc_disable;
@@ -115,7 +116,8 @@ extern char ignore_fpu_irq;
 
 void __init cpu_detect(struct cpuinfo_x86 *c);
 
-extern void identify_cpu(struct cpuinfo_x86 *);
+extern void identify_boot_cpu(void);
+extern void identify_secondary_cpu(struct cpuinfo_x86 *);
 extern void print_cpu_info(struct cpuinfo_x86 *);
 extern unsigned int init_intel_cacheinfo(struct cpuinfo_x86 *c);
 extern unsigned short num_cache_leaves;
@@ -126,28 +128,7 @@ extern void detect_ht(struct cpuinfo_x86 *c);
 static inline void detect_ht(struct cpuinfo_x86 *c) {}
 #endif
 
-/*
- * 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 */
-
-static inline fastcall void native_cpuid(unsigned int *eax, unsigned int *ebx,
+static inline void native_cpuid(unsigned int *eax, unsigned int *ebx,
                                          unsigned int *ecx, unsigned int *edx)
 {
         /* ecx is often an input as well as an output. */
@@ -162,21 +143,6 @@ static inline fastcall void native_cpuid(unsigned int *eax, unsigned int *ebx,
 #define load_cr3(pgdir) write_cr3(__pa(pgdir))
 
 /*
- * 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
@@ -203,26 +169,6 @@ static inline void clear_in_cr4 (unsigned long mask)
 }
 
 /*
- *      NSC/Cyrix CPU configuration register indexes
- */
-
-#define CX86_PCR0 0x20
-#define CX86_GCR  0xb8
-#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_PCR1 0xf0
-#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
  */
 
@@ -345,7 +291,8 @@ typedef struct {
 
 struct thread_struct;
 
-struct tss_struct {
+/* This is the TSS defined by the hardware. */
+struct i386_hw_tss {
         unsigned short  back_link,__blh;
         unsigned long   esp0;
         unsigned short  ss0,__ss0h;
@@ -369,6 +316,11 @@ struct tss_struct {
         unsigned short  gs, __gsh;
         unsigned short  ldt, __ldth;
         unsigned short  trace, io_bitmap_base;
+} __attribute__((packed));
+
+struct tss_struct {
+        struct i386_hw_tss x86_tss;
+
         /*
          * The extra 1 is there because the CPU will access an
          * additional byte beyond the end of the IO permission
@@ -421,10 +373,11 @@ struct thread_struct {
 };
 
 #define INIT_THREAD  {                                                  \
+        .esp0 = sizeof(init_stack) + (long)&init_stack,                 \
         .vm86_info = NULL,                                              \
         .sysenter_cs = __KERNEL_CS,                                     \
         .io_bitmap_ptr = NULL,                                          \
-        .fs = __KERNEL_PDA,                                             \
+        .fs = __KERNEL_PERCPU,                                          \
 }
 
 /*
@@ -434,10 +387,12 @@ struct thread_struct {
  * be within the limit.
  */
 #define INIT_TSS  {                                                     \
-        .esp0           = sizeof(init_stack) + (long)&init_stack,       \
-        .ss0            = __KERNEL_DS,                                  \
-        .ss1            = __KERNEL_CS,                                  \
-        .io_bitmap_base = INVALID_IO_BITMAP_OFFSET,                     \
+        .x86_tss = {                                                    \
+                .esp0           = sizeof(init_stack) + (long)&init_stack, \
+                .ss0            = __KERNEL_DS,                          \
+                .ss1            = __KERNEL_CS,                          \
+                .io_bitmap_base = INVALID_IO_BITMAP_OFFSET,             \
+         },                                                             \
         .io_bitmap      = { [ 0 ... IO_BITMAP_LONGS] = ~0 },            \
 }
 
@@ -544,40 +499,70 @@ static inline void rep_nop(void)
 
 #define cpu_relax()     rep_nop()
 
-#ifdef CONFIG_PARAVIRT
-#include <asm/paravirt.h>
-#else
-#define paravirt_enabled() 0
-#define __cpuid native_cpuid
-
-static inline void load_esp0(struct tss_struct *tss, struct thread_struct *thread)
+static inline void native_load_esp0(struct tss_struct *tss, struct thread_struct *thread)
 {
-        tss->esp0 = thread->esp0;
+        tss->x86_tss.esp0 = thread->esp0;
         /* This can only happen when SEP is enabled, no need to test "SEP"arately */
-        if (unlikely(tss->ss1 != thread->sysenter_cs)) {
-                tss->ss1 = thread->sysenter_cs;
+        if (unlikely(tss->x86_tss.ss1 != thread->sysenter_cs)) {
+                tss->x86_tss.ss1 = thread->sysenter_cs;
                 wrmsr(MSR_IA32_SYSENTER_CS, thread->sysenter_cs, 0);
         }
 }
 
-/*
- * These special macros can be used to get or set a debugging register
- */
-#define get_debugreg(var, register)                             \
-                __asm__("movl %%db" #register ", %0"            \
-                        :"=r" (var))
-#define set_debugreg(value, register)                   \
-                __asm__("movl %0,%%db" #register                \
-                        : /* no output */                       \
-                        :"r" (value))
 
-#define set_iopl_mask native_set_iopl_mask
-#endif /* CONFIG_PARAVIRT */
+static inline unsigned long native_get_debugreg(int regno)
+{
+        unsigned long val = 0;  /* Damn you, gcc! */
+
+        switch (regno) {
+        case 0:
+                asm("movl %%db0, %0" :"=r" (val)); break;
+        case 1:
+                asm("movl %%db1, %0" :"=r" (val)); break;
+        case 2:
+                asm("movl %%db2, %0" :"=r" (val)); break;
+        case 3:
+                asm("movl %%db3, %0" :"=r" (val)); break;
+        case 6:
+                asm("movl %%db6, %0" :"=r" (val)); break;
+        case 7:
+                asm("movl %%db7, %0" :"=r" (val)); break;
+        default:
+                BUG();
+        }
+        return val;
+}
+
+static inline void native_set_debugreg(int regno, unsigned long value)
+{
+        switch (regno) {
+        case 0:
+                asm("movl %0,%%db0"     : /* no output */ :"r" (value));
+                break;
+        case 1:
+                asm("movl %0,%%db1"     : /* no output */ :"r" (value));
+                break;
+        case 2:
+                asm("movl %0,%%db2"     : /* no output */ :"r" (value));
+                break;
+        case 3:
+                asm("movl %0,%%db3"     : /* no output */ :"r" (value));
+                break;
+        case 6:
+                asm("movl %0,%%db6"     : /* no output */ :"r" (value));
+                break;
+        case 7:
+                asm("movl %0,%%db7"     : /* no output */ :"r" (value));
+                break;
+        default:
+                BUG();
+        }
+}
 
 /*
  * Set IOPL bits in EFLAGS from given mask
  */
-static fastcall inline void native_set_iopl_mask(unsigned mask)
+static inline void native_set_iopl_mask(unsigned mask)
 {
         unsigned int reg;
         __asm__ __volatile__ ("pushfl;"
@@ -590,6 +575,28 @@ static fastcall inline void native_set_iopl_mask(unsigned mask)
                                 : "i" (~X86_EFLAGS_IOPL), "r" (mask));
 }
 
+#ifdef CONFIG_PARAVIRT
+#include <asm/paravirt.h>
+#else
+#define paravirt_enabled() 0
+#define __cpuid native_cpuid
+
+static inline void load_esp0(struct tss_struct *tss, struct thread_struct *thread)
+{
+        native_load_esp0(tss, thread);
+}
+
+/*
+ * These special macros can be used to get or set a debugging register
+ */
+#define get_debugreg(var, register)                             \
+        (var) = native_get_debugreg(register)
+#define set_debugreg(value, register)                           \
+        native_set_debugreg(register, value)
+
+#define set_iopl_mask native_set_iopl_mask
+#endif /* CONFIG_PARAVIRT */
+
 /*
  * Generic CPUID function
  * clear %ecx since some cpus (Cyrix MII) do not set or clear %ecx
@@ -742,8 +749,10 @@ extern unsigned long boot_option_idle_override;
 extern void enable_sep_cpu(void);
 extern int sysenter_setup(void);
 
-extern int init_gdt(int cpu, struct task_struct *idle);
 extern void cpu_set_gdt(int);
-extern void secondary_cpu_init(void);
+extern void switch_to_new_gdt(void);
+extern void cpu_init(void);
+
+extern int force_mwait;
 
 #endif /* __ASM_I386_PROCESSOR_H */