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-rw-r--r--include/asm-i386/processor.h204
1 files changed, 111 insertions, 93 deletions
diff --git a/include/asm-i386/processor.h b/include/asm-i386/processor.h
index e0ddca94d50..a52d6544042 100644
--- a/include/asm-i386/processor.h
+++ b/include/asm-i386/processor.h
@@ -20,6 +20,7 @@
#include <linux/threads.h>
#include <asm/percpu.h>
#include <linux/cpumask.h>
+#include <linux/init.h>
/* flag for disabling the tsc */
extern int tsc_disable;
@@ -72,6 +73,7 @@ struct cpuinfo_x86 {
#endif
unsigned char x86_max_cores; /* cpuid returned max cores value */
unsigned char apicid;
+ unsigned short x86_clflush_size;
#ifdef CONFIG_SMP
unsigned char booted_cores; /* number of cores as seen by OS */
__u8 phys_proc_id; /* Physical processor id. */
@@ -111,6 +113,8 @@ extern struct cpuinfo_x86 cpu_data[];
extern int cpu_llc_id[NR_CPUS];
extern char ignore_fpu_irq;
+void __init cpu_detect(struct cpuinfo_x86 *c);
+
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);
@@ -143,8 +147,8 @@ static inline void detect_ht(struct cpuinfo_x86 *c) {}
#define X86_EFLAGS_VIP 0x00100000 /* Virtual Interrupt Pending */
#define X86_EFLAGS_ID 0x00200000 /* CPUID detection flag */
-static inline void __cpuid(unsigned int *eax, unsigned int *ebx,
- unsigned int *ecx, unsigned int *edx)
+static inline fastcall 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. */
__asm__("cpuid"
@@ -155,59 +159,6 @@ static inline void __cpuid(unsigned int *eax, unsigned int *ebx,
: "0" (*eax), "2" (*ecx));
}
-/*
- * Generic CPUID function
- * clear %ecx since some cpus (Cyrix MII) do not set or clear %ecx
- * resulting in stale register contents being returned.
- */
-static inline void cpuid(unsigned int op, unsigned int *eax, unsigned int *ebx, unsigned int *ecx, unsigned int *edx)
-{
- *eax = op;
- *ecx = 0;
- __cpuid(eax, ebx, ecx, edx);
-}
-
-/* Some CPUID calls want 'count' to be placed in ecx */
-static inline void cpuid_count(int op, int count, int *eax, int *ebx, int *ecx,
- int *edx)
-{
- *eax = op;
- *ecx = count;
- __cpuid(eax, ebx, ecx, edx);
-}
-
-/*
- * CPUID functions returning a single datum
- */
-static inline unsigned int cpuid_eax(unsigned int op)
-{
- unsigned int eax, ebx, ecx, edx;
-
- cpuid(op, &eax, &ebx, &ecx, &edx);
- return eax;
-}
-static inline unsigned int cpuid_ebx(unsigned int op)
-{
- unsigned int eax, ebx, ecx, edx;
-
- cpuid(op, &eax, &ebx, &ecx, &edx);
- return ebx;
-}
-static inline unsigned int cpuid_ecx(unsigned int op)
-{
- unsigned int eax, ebx, ecx, edx;
-
- cpuid(op, &eax, &ebx, &ecx, &edx);
- return ecx;
-}
-static inline unsigned int cpuid_edx(unsigned int op)
-{
- unsigned int eax, ebx, ecx, edx;
-
- cpuid(op, &eax, &ebx, &ecx, &edx);
- return edx;
-}
-
#define load_cr3(pgdir) write_cr3(__pa(pgdir))
/*
@@ -473,6 +424,7 @@ struct thread_struct {
.vm86_info = NULL, \
.sysenter_cs = __KERNEL_CS, \
.io_bitmap_ptr = NULL, \
+ .gs = __KERNEL_PDA, \
}
/*
@@ -489,18 +441,9 @@ struct thread_struct {
.io_bitmap = { [ 0 ... IO_BITMAP_LONGS] = ~0 }, \
}
-static inline void load_esp0(struct tss_struct *tss, struct thread_struct *thread)
-{
- 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;
- wrmsr(MSR_IA32_SYSENTER_CS, thread->sysenter_cs, 0);
- }
-}
-
#define start_thread(regs, new_eip, new_esp) do { \
- __asm__("movl %0,%%fs ; movl %0,%%gs": :"r" (0)); \
+ __asm__("movl %0,%%fs": :"r" (0)); \
+ regs->xgs = 0; \
set_fs(USER_DS); \
regs->xds = __USER_DS; \
regs->xes = __USER_DS; \
@@ -510,33 +453,6 @@ static inline void load_esp0(struct tss_struct *tss, struct thread_struct *threa
regs->esp = new_esp; \
} while (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))
-
-/*
- * Set IOPL bits in EFLAGS from given mask
- */
-static inline void set_iopl_mask(unsigned mask)
-{
- unsigned int reg;
- __asm__ __volatile__ ("pushfl;"
- "popl %0;"
- "andl %1, %0;"
- "orl %2, %0;"
- "pushl %0;"
- "popfl"
- : "=&r" (reg)
- : "i" (~X86_EFLAGS_IOPL), "r" (mask));
-}
-
/* Forward declaration, a strange C thing */
struct task_struct;
struct mm_struct;
@@ -628,6 +544,105 @@ 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)
+{
+ 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;
+ 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 */
+
+/*
+ * Set IOPL bits in EFLAGS from given mask
+ */
+static fastcall inline void native_set_iopl_mask(unsigned mask)
+{
+ unsigned int reg;
+ __asm__ __volatile__ ("pushfl;"
+ "popl %0;"
+ "andl %1, %0;"
+ "orl %2, %0;"
+ "pushl %0;"
+ "popfl"
+ : "=&r" (reg)
+ : "i" (~X86_EFLAGS_IOPL), "r" (mask));
+}
+
+/*
+ * Generic CPUID function
+ * clear %ecx since some cpus (Cyrix MII) do not set or clear %ecx
+ * resulting in stale register contents being returned.
+ */
+static inline void cpuid(unsigned int op, unsigned int *eax, unsigned int *ebx, unsigned int *ecx, unsigned int *edx)
+{
+ *eax = op;
+ *ecx = 0;
+ __cpuid(eax, ebx, ecx, edx);
+}
+
+/* Some CPUID calls want 'count' to be placed in ecx */
+static inline void cpuid_count(int op, int count, int *eax, int *ebx, int *ecx,
+ int *edx)
+{
+ *eax = op;
+ *ecx = count;
+ __cpuid(eax, ebx, ecx, edx);
+}
+
+/*
+ * CPUID functions returning a single datum
+ */
+static inline unsigned int cpuid_eax(unsigned int op)
+{
+ unsigned int eax, ebx, ecx, edx;
+
+ cpuid(op, &eax, &ebx, &ecx, &edx);
+ return eax;
+}
+static inline unsigned int cpuid_ebx(unsigned int op)
+{
+ unsigned int eax, ebx, ecx, edx;
+
+ cpuid(op, &eax, &ebx, &ecx, &edx);
+ return ebx;
+}
+static inline unsigned int cpuid_ecx(unsigned int op)
+{
+ unsigned int eax, ebx, ecx, edx;
+
+ cpuid(op, &eax, &ebx, &ecx, &edx);
+ return ecx;
+}
+static inline unsigned int cpuid_edx(unsigned int op)
+{
+ unsigned int eax, ebx, ecx, edx;
+
+ cpuid(op, &eax, &ebx, &ecx, &edx);
+ return edx;
+}
+
/* generic versions from gas */
#define GENERIC_NOP1 ".byte 0x90\n"
#define GENERIC_NOP2 ".byte 0x89,0xf6\n"
@@ -727,4 +742,7 @@ 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 secondary_cpu_init(void);
+
#endif /* __ASM_I386_PROCESSOR_H */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-27 21:52:56 +0000