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Location: vmkdrivers/BLD/build/HEADERS/KLnext-vmkdrivers-asm-x64/vmkernel64/release/asm/irqflags.h
0d186246d211
3.2 KiB
text/x-chdr
ESXi-4.1-U3
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 | /*
* include/asm-x86_64/irqflags.h
*
* IRQ flags handling
*
* This file gets included from lowlevel asm headers too, to provide
* wrapped versions of the local_irq_*() APIs, based on the
* raw_local_irq_*() functions from the lowlevel headers.
*/
#ifndef _ASM_IRQFLAGS_H
#define _ASM_IRQFLAGS_H
#ifndef __ASSEMBLY__
/*
* Interrupt control:
*/
static inline unsigned long __raw_local_save_flags(void)
{
unsigned long flags;
__asm__ __volatile__(
"# __raw_save_flags\n\t"
"pushfq ; popq %q0"
: "=g" (flags)
: /* no input */
: "memory"
);
return flags;
}
#define raw_local_save_flags(flags) \
do { (flags) = __raw_local_save_flags(); } while (0)
static inline void raw_local_irq_restore(unsigned long flags)
{
__asm__ __volatile__(
"pushq %0 ; popfq"
: /* no output */
:"g" (flags)
:"memory", "cc"
);
}
#ifdef CONFIG_X86_VSMP
/*
* Interrupt control for the VSMP architecture:
*/
static inline void raw_local_irq_disable(void)
{
unsigned long flags = __raw_local_save_flags();
raw_local_irq_restore((flags & ~(1 << 9)) | (1 << 18));
}
static inline void raw_local_irq_enable(void)
{
unsigned long flags = __raw_local_save_flags();
raw_local_irq_restore((flags | (1 << 9)) & ~(1 << 18));
}
/**
* raw_irqs_disabled_flags - <1 Line Description>
* @<arg1>: <first argument description>
* @<arg2>: <second argument description>
*
* <full description>
*
* ESX Deviation Notes:
* <Describes how ESX implementation is different from standard Linux.>
*
*/
/* _VMKLNX_CODECHECK_: raw_irqs_disabled_flags */
static inline int raw_irqs_disabled_flags(unsigned long flags)
{
return !(flags & (1<<9)) || (flags & (1 << 18));
}
#else /* CONFIG_X86_VSMP */
static inline void raw_local_irq_disable(void)
{
__asm__ __volatile__("cli" : : : "memory");
}
static inline void raw_local_irq_enable(void)
{
__asm__ __volatile__("sti" : : : "memory");
}
static inline int raw_irqs_disabled_flags(unsigned long flags)
{
return !(flags & (1 << 9));
}
#endif
/*
* For spinlocks, etc.:
*/
static inline unsigned long __raw_local_irq_save(void)
{
unsigned long flags = __raw_local_save_flags();
raw_local_irq_disable();
return flags;
}
#define raw_local_irq_save(flags) \
do { (flags) = __raw_local_irq_save(); } while (0)
static inline int raw_irqs_disabled(void)
{
unsigned long flags = __raw_local_save_flags();
return raw_irqs_disabled_flags(flags);
}
/*
* Used in the idle loop; sti takes one instruction cycle
* to complete:
*/
static inline void raw_safe_halt(void)
{
__asm__ __volatile__("sti; hlt" : : : "memory");
}
/*
* Used when interrupts are already enabled or to
* shutdown the processor:
*/
static inline void halt(void)
{
__asm__ __volatile__("hlt": : :"memory");
}
#else /* __ASSEMBLY__: */
# ifdef CONFIG_TRACE_IRQFLAGS
# define TRACE_IRQS_ON call trace_hardirqs_on_thunk
# define TRACE_IRQS_OFF call trace_hardirqs_off_thunk
# else
# define TRACE_IRQS_ON
# define TRACE_IRQS_OFF
# endif
#endif
#endif
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