KolibriOS/kolibrios
13
14
Fork 12
Code Issues 113 Pull Requests 16 Actions Projects 1 Releases Wiki Activity

[DRIVERS] Fixed linux MSR functions in ddk

Browse Source 
git-svn-id: svn://kolibrios.org@9951 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
turbocat
2023-12-28 14:06:06 +00:00
parent bbee219bab
commit c6d4aab9c5
8 changed files with 110 additions and 99 deletions
Download Patch File Download Diff File Expand all files Collapse all files

33
drivers/include/asm/msr.h
View File

@@ -93,19 +93,9 @@ static inline unsigned long long native_read_msr(unsigned int msr)
static inline unsigned long long native_read_msr_safe(unsigned int msr,
int *err)
{
DECLARE_ARGS(val, low, high);
asm volatile("2: rdmsr ; xor %[err],%[err]\n"
"1:\n\t"
".section .fixup,\"ax\"\n\t"
"3: mov %[fault],%[err] ; jmp 1b\n\t"
".previous\n\t"
_ASM_EXTABLE(2b, 3b)
: [err] "=r" (*err), EAX_EDX_RET(val, low, high)
: "c" (msr), [fault] "i" (-EIO));
if (msr_tracepoint_active(__tracepoint_read_msr))
do_trace_read_msr(msr, EAX_EDX_VAL(val, low, high), *err);
return EAX_EDX_VAL(val, low, high);
#warning "FIXME: native_read_msr_safe always return err = 0!"
*err = 0;
return native_read_msr(msr);
}
static inline void native_write_msr(unsigned int msr,
@@ -120,20 +110,9 @@ static inline void native_write_msr(unsigned int msr,
notrace static inline int native_write_msr_safe(unsigned int msr,
unsigned low, unsigned high)
{
int err;
asm volatile("2: wrmsr ; xor %[err],%[err]\n"
"1:\n\t"
".section .fixup,\"ax\"\n\t"
"3: mov %[fault],%[err] ; jmp 1b\n\t"
".previous\n\t"
_ASM_EXTABLE(2b, 3b)
: [err] "=a" (err)
: "c" (msr), "0" (low), "d" (high),
[fault] "i" (-EIO)
: "memory");
if (msr_tracepoint_active(__tracepoint_write_msr))
do_trace_write_msr(msr, ((u64)high << 32 | low), err);
return err;
#warning "FIXME: native_write_msr_safe always return 0!"
native_write_msr(msr, low, high);
return 0;
}
extern int rdmsr_safe_regs(u32 regs[8]);