static u32 __cpuinit power2(u32 x)
{
- u32 s=1;
- while(s<=x)
- s<<=1;
- return s>>=1;
+ u32 s = 1;
+ while(s <= x)
+ s <<= 1;
+ return s >>= 1;
}
/*
* Set up an actual MCR
*/
-
+
static void __cpuinit centaur_mcr_insert(int reg, u32 base, u32 size, int key)
{
u32 lo, hi;
-
+
hi = base & ~0xFFF;
lo = ~(size-1); /* Size is a power of 2 so this makes a mask */
lo &= ~0xFFF; /* Remove the ctrl value bits */
int i;
u32 top = 0;
u32 clip = 0xFFFFFFFFUL;
-
+
for (i = 0; i < e820.nr_map; i++) {
unsigned long start, end;
* Don't MCR over reserved space. Ignore the ISA hole
* we frob around that catastrophe already
*/
-
+
if (e820.map[i].type == E820_RESERVED)
{
- if(e820.map[i].addr >= 0x100000UL && e820.map[i].addr < clip)
+ if (e820.map[i].addr >= 0x100000UL && e820.map[i].addr < clip)
clip = e820.map[i].addr;
continue;
}
}
/* Everything below 'top' should be RAM except for the ISA hole.
Because of the limited MCR's we want to map NV/ACPI into our
- MCR range for gunk in RAM
-
+ MCR range for gunk in RAM
+
Clip might cause us to MCR insufficient RAM but that is an
acceptable failure mode and should only bite obscure boxes with
a VESA hole at 15Mb
-
+
The second case Clip sometimes kicks in is when the EBDA is marked
as reserved. Again we fail safe with reasonable results
*/
-
- if(top>clip)
- top=clip;
-
+
+ if(top > clip)
+ top = clip;
+
return top;
}
u32 top = root;
u32 floor = 0;
int ct = 0;
-
- while(ct<nr)
+
+ while (ct < nr)
{
u32 fspace = 0;
* Find the largest block we will fill going upwards
*/
- u32 high = power2(mem-top);
+ u32 high = power2(mem-top);
/*
* Find the largest block we will fill going downwards
/*
* Don't fill below 1Mb going downwards as there
* is an ISA hole in the way.
- */
-
- if(base <= 1024*1024)
+ */
+
+ if (base <= 1024*1024)
low = 0;
-
+
/*
* See how much space we could cover by filling below
* the ISA hole
*/
-
- if(floor == 0)
+
+ if (floor == 0)
fspace = 512*1024;
- else if(floor ==512*1024)
+ else if (floor == 512*1024)
fspace = 128*1024;
/* And forget ROM space */
-
+
/*
* Now install the largest coverage we get
*/
-
- if(fspace > high && fspace > low)
+
+ if (fspace > high && fspace > low)
{
centaur_mcr_insert(ct, floor, fspace, key);
floor += fspace;
}
- else if(high > low)
- {
+ else if (high > low) {
centaur_mcr_insert(ct, top, high, key);
top += high;
}
- else if(low > 0)
- {
+ else if (low > 0) {
base -= low;
centaur_mcr_insert(ct, base, low, key);
}
* We loaded ct values. We now need to set the mask. The caller
* must do this bit.
*/
-
+
return ct;
}
* Allocate up to 6 mcrs to mark as much of ram as possible
* as write combining and weak write ordered.
*
- * To experiment with: Linux never uses stack operations for
+ * To experiment with: Linux never uses stack operations for
* mmio spaces so we could globally enable stack operation wc
*
* Load the registers with type 31 - full write combining, all
/*
* Wipe unused MCRs
*/
-
- for(i=used;i<8;i++)
+
+ for (i = used; i < 8; i++)
wrmsr(MSR_IDT_MCR0+i, 0, 0);
}
*/
int used = centaur_mcr_compute(6, 25);
-
+
/*
* Mark the registers we are using.
*/
-
+
rdmsr(MSR_IDT_MCR_CTRL, lo, hi);
- for(i=0;i<used;i++)
- lo|=1<<(9+i);
+ for (i = 0; i < used; i++)
+ lo |= 1<<(9+i);
wrmsr(MSR_IDT_MCR_CTRL, lo, hi);
-
+
/*
* Wipe unused MCRs
*/
-
- for(i=used;i<8;i++)
+
+ for (i = used; i < 8; i++)
wrmsr(MSR_IDT_MCR0+i, 0, 0);
}
{
u32 lo, hi;
u32 key;
-
+
rdmsr(MSR_IDT_MCR_CTRL, lo, hi);
- lo&=~0x1C0; /* blank bits 8-6 */
+ lo &= ~0x1C0; /* blank bits 8-6 */
key = (lo>>17) & 7;
lo |= key<<6; /* replace with unlock key */
wrmsr(MSR_IDT_MCR_CTRL, lo, hi);
static void __cpuinit winchip2_protect_mcr(void)
{
u32 lo, hi;
-
+
rdmsr(MSR_IDT_MCR_CTRL, lo, hi);
- lo&=~0x1C0; /* blank bits 8-6 */
+ lo &= ~0x1C0; /* blank bits 8-6 */
wrmsr(MSR_IDT_MCR_CTRL, lo, hi);
}
#endif /* CONFIG_X86_OOSTORE */
/* enable ACE unit, if present and disabled */
if ((tmp & (ACE_PRESENT | ACE_ENABLED)) == ACE_PRESENT) {
- rdmsr (MSR_VIA_FCR, lo, hi);
+ rdmsr(MSR_VIA_FCR, lo, hi);
lo |= ACE_FCR; /* enable ACE unit */
- wrmsr (MSR_VIA_FCR, lo, hi);
+ wrmsr(MSR_VIA_FCR, lo, hi);
printk(KERN_INFO "CPU: Enabled ACE h/w crypto\n");
}
/* enable RNG unit, if present and disabled */
if ((tmp & (RNG_PRESENT | RNG_ENABLED)) == RNG_PRESENT) {
- rdmsr (MSR_VIA_RNG, lo, hi);
+ rdmsr(MSR_VIA_RNG, lo, hi);
lo |= RNG_ENABLE; /* enable RNG unit */
- wrmsr (MSR_VIA_RNG, lo, hi);
+ wrmsr(MSR_VIA_RNG, lo, hi);
printk(KERN_INFO "CPU: Enabled h/w RNG\n");
}
}
/* Cyrix III family needs CX8 & PGE explicitly enabled. */
- if (c->x86_model >=6 && c->x86_model <= 9) {
- rdmsr (MSR_VIA_FCR, lo, hi);
+ if (c->x86_model >= 6 && c->x86_model <= 9) {
+ rdmsr(MSR_VIA_FCR, lo, hi);
lo |= (1<<1 | 1<<7);
- wrmsr (MSR_VIA_FCR, lo, hi);
+ wrmsr(MSR_VIA_FCR, lo, hi);
set_bit(X86_FEATURE_CX8, c->x86_capability);
}
/* Before Nehemiah, the C3's had 3dNOW! */
- if (c->x86_model >=6 && c->x86_model <9)
+ if (c->x86_model >= 6 && c->x86_model < 9)
set_bit(X86_FEATURE_3DNOW, c->x86_capability);
get_model_name(c);
static void __cpuinit init_centaur(struct cpuinfo_x86 *c)
{
enum {
- ECX8=1<<1,
- EIERRINT=1<<2,
- DPM=1<<3,
- DMCE=1<<4,
- DSTPCLK=1<<5,
- ELINEAR=1<<6,
- DSMC=1<<7,
- DTLOCK=1<<8,
- EDCTLB=1<<8,
- EMMX=1<<9,
- DPDC=1<<11,
- EBRPRED=1<<12,
- DIC=1<<13,
- DDC=1<<14,
- DNA=1<<15,
- ERETSTK=1<<16,
- E2MMX=1<<19,
- EAMD3D=1<<20,
+ ECX8 = 1<<1,
+ EIERRINT = 1<<2,
+ DPM = 1<<3,
+ DMCE = 1<<4,
+ DSTPCLK = 1<<5,
+ ELINEAR = 1<<6,
+ DSMC = 1<<7,
+ DTLOCK = 1<<8,
+ EDCTLB = 1<<8,
+ EMMX = 1<<9,
+ DPDC = 1<<11,
+ EBRPRED = 1<<12,
+ DIC = 1<<13,
+ DDC = 1<<14,
+ DNA = 1<<15,
+ ERETSTK = 1<<16,
+ E2MMX = 1<<19,
+ EAMD3D = 1<<20,
};
char *name;
- u32 fcr_set=0;
- u32 fcr_clr=0;
- u32 lo,hi,newlo;
- u32 aa,bb,cc,dd;
+ u32 fcr_set = 0;
+ u32 fcr_clr = 0;
+ u32 lo, hi, newlo;
+ u32 aa, bb, cc, dd;
/* Bit 31 in normal CPUID used for nonstandard 3DNow ID;
3DNow is IDd by bit 31 in extended CPUID (1*32+31) anyway */
switch (c->x86) {
- case 5:
- switch(c->x86_model) {
+ case 5:
+ switch (c->x86_model) {
case 4:
- name="C6";
- fcr_set=ECX8|DSMC|EDCTLB|EMMX|ERETSTK;
- fcr_clr=DPDC;
+ name = "C6";
+ fcr_set = ECX8|DSMC|EDCTLB|EMMX|ERETSTK;
+ fcr_clr = DPDC;
printk(KERN_NOTICE "Disabling bugged TSC.\n");
clear_bit(X86_FEATURE_TSC, c->x86_capability);
#ifdef CONFIG_X86_OOSTORE
/* Enable
write combining on non-stack, non-string
write combining on string, all types
- weak write ordering
-
- The C6 original lacks weak read order
-
+ weak write ordering
+
+ The C6 original lacks weak read order
+
Note 0x120 is write only on Winchip 1 */
-
+
wrmsr(MSR_IDT_MCR_CTRL, 0x01F0001F, 0);
-#endif
+#endif
break;
case 8:
- switch(c->x86_mask) {
+ switch (c->x86_mask) {
default:
- name="2";
+ name = "2";
break;
case 7 ... 9:
- name="2A";
+ name = "2A";
break;
case 10 ... 15:
- name="2B";
+ name = "2B";
break;
}
- fcr_set=ECX8|DSMC|DTLOCK|EMMX|EBRPRED|ERETSTK|E2MMX|EAMD3D;
- fcr_clr=DPDC;
+ fcr_set = ECX8|DSMC|DTLOCK|EMMX|EBRPRED|ERETSTK|E2MMX|EAMD3D;
+ fcr_clr = DPDC;
#ifdef CONFIG_X86_OOSTORE
winchip2_unprotect_mcr();
winchip2_create_optimal_mcr();
/* Enable
write combining on non-stack, non-string
write combining on string, all types
- weak write ordering
+ weak write ordering
*/
- lo|=31;
+ lo |= 31;
wrmsr(MSR_IDT_MCR_CTRL, lo, hi);
winchip2_protect_mcr();
#endif
break;
case 9:
- name="3";
- fcr_set=ECX8|DSMC|DTLOCK|EMMX|EBRPRED|ERETSTK|E2MMX|EAMD3D;
- fcr_clr=DPDC;
+ name = "3";
+ fcr_set = ECX8|DSMC|DTLOCK|EMMX|EBRPRED|ERETSTK|E2MMX|EAMD3D;
+ fcr_clr = DPDC;
#ifdef CONFIG_X86_OOSTORE
winchip2_unprotect_mcr();
winchip2_create_optimal_mcr();
/* Enable
write combining on non-stack, non-string
write combining on string, all types
- weak write ordering
+ weak write ordering
*/
- lo|=31;
+ lo |= 31;
wrmsr(MSR_IDT_MCR_CTRL, lo, hi);
winchip2_protect_mcr();
#endif
break;
default:
- name="??";
+ name = "??";
}
rdmsr(MSR_IDT_FCR1, lo, hi);
- newlo=(lo|fcr_set) & (~fcr_clr);
+ newlo = (lo|fcr_set) & (~fcr_clr);
- if (newlo!=lo) {
- printk(KERN_INFO "Centaur FCR was 0x%X now 0x%X\n", lo, newlo );
- wrmsr(MSR_IDT_FCR1, newlo, hi );
+ if (newlo != lo) {
+ printk(KERN_INFO "Centaur FCR was 0x%X now 0x%X\n", lo, newlo);
+ wrmsr(MSR_IDT_FCR1, newlo, hi);
} else {
- printk(KERN_INFO "Centaur FCR is 0x%X\n",lo);
+ printk(KERN_INFO "Centaur FCR is 0x%X\n", lo);
}
/* Emulate MTRRs using Centaur's MCR. */
set_bit(X86_FEATURE_CENTAUR_MCR, c->x86_capability);
/* Report CX8 */
set_bit(X86_FEATURE_CX8, c->x86_capability);
/* Set 3DNow! on Winchip 2 and above. */
- if (c->x86_model >=8)
+ if (c->x86_model >= 8)
set_bit(X86_FEATURE_3DNOW, c->x86_capability);
/* See if we can find out some more. */
- if ( cpuid_eax(0x80000000) >= 0x80000005 ) {
+ if (cpuid_eax(0x80000000) >= 0x80000005) {
/* Yes, we can. */
- cpuid(0x80000005,&aa,&bb,&cc,&dd);
+ cpuid(0x80000005, &aa, &bb, &cc, &dd);
/* Add L1 data and code cache sizes. */
c->x86_cache_size = (cc>>24)+(dd>>24);
}
- sprintf( c->x86_model_id, "WinChip %s", name );
+ sprintf(c->x86_model_id, "WinChip %s", name);
break;
- case 6:
+ case 6:
init_c3(c);
break;
}
}
-static unsigned int __cpuinit centaur_size_cache(struct cpuinfo_x86 * c, unsigned int size)
+static unsigned int __cpuinit centaur_size_cache(struct cpuinfo_x86 *c, unsigned int size)
{
/* VIA C3 CPUs (670-68F) need further shifting. */
if ((c->x86 == 6) && ((c->x86_model == 7) || (c->x86_model == 8)))
/* VIA also screwed up Nehemiah stepping 1, and made
it return '65KB' instead of '64KB'
- Note, it seems this may only be in engineering samples. */
- if ((c->x86==6) && (c->x86_model==9) && (c->x86_mask==1) && (size==65))
- size -=1;
+ if ((c->x86 == 6) && (c->x86_model == 9) && (c->x86_mask == 1) && (size == 65))
+ size -= 1;
return size;
}
projects / linux-2.6 / commitdiff