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Diffstat (limited to 'arch/x86/kernel/cpu/cyrix.c')
-rw-r--r--arch/x86/kernel/cpu/cyrix.c136
1 files changed, 63 insertions, 73 deletions
diff --git a/arch/x86/kernel/cpu/cyrix.c b/arch/x86/kernel/cpu/cyrix.c
index 7139b0262703..3fd7a67bb06a 100644
--- a/arch/x86/kernel/cpu/cyrix.c
+++ b/arch/x86/kernel/cpu/cyrix.c
@@ -19,7 +19,7 @@ static void __cpuinit do_cyrix_devid(unsigned char *dir0, unsigned char *dir1)
{
unsigned char ccr2, ccr3;
unsigned long flags;
-
+
/* we test for DEVID by checking whether CCR3 is writable */
local_irq_save(flags);
ccr3 = getCx86(CX86_CCR3);
@@ -37,8 +37,7 @@ static void __cpuinit do_cyrix_devid(unsigned char *dir0, unsigned char *dir1)
setCx86(CX86_CCR2, ccr2);
*dir0 = 0xfe;
}
- }
- else {
+ } else {
setCx86(CX86_CCR3, ccr3); /* restore CCR3 */
/* read DIR0 and DIR1 CPU registers */
@@ -86,7 +85,7 @@ static char cyrix_model_mult2[] __cpuinitdata = "12233445";
static void __cpuinit check_cx686_slop(struct cpuinfo_x86 *c)
{
unsigned long flags;
-
+
if (Cx86_dir0_msb == 3) {
unsigned char ccr3, ccr5;
@@ -132,7 +131,7 @@ static void __cpuinit set_cx86_memwb(void)
/* set 'Not Write-through' */
write_cr0(read_cr0() | X86_CR0_NW);
/* CCR2 bit 2: lock NW bit and set WT1 */
- setCx86(CX86_CCR2, getCx86(CX86_CCR2) | 0x14 );
+ setCx86(CX86_CCR2, getCx86(CX86_CCR2) | 0x14);
}
static void __cpuinit set_cx86_inc(void)
@@ -148,7 +147,7 @@ static void __cpuinit set_cx86_inc(void)
setCx86(CX86_PCR1, getCx86(CX86_PCR1) | 0x02);
/* PCR0 -- Performance Control */
/* Incrementor Margin 10 */
- setCx86(CX86_PCR0, getCx86(CX86_PCR0) | 0x04);
+ setCx86(CX86_PCR0, getCx86(CX86_PCR0) | 0x04);
setCx86(CX86_CCR3, ccr3); /* disable MAPEN */
}
@@ -167,16 +166,16 @@ static void __cpuinit geode_configure(void)
ccr3 = getCx86(CX86_CCR3);
setCx86(CX86_CCR3, (ccr3 & 0x0f) | 0x10); /* enable MAPEN */
-
+
/* FPU fast, DTE cache, Mem bypass */
setCx86(CX86_CCR4, getCx86(CX86_CCR4) | 0x38);
setCx86(CX86_CCR3, ccr3); /* disable MAPEN */
-
+
set_cx86_memwb();
- set_cx86_reorder();
+ set_cx86_reorder();
set_cx86_inc();
-
+
local_irq_restore(flags);
}
@@ -187,14 +186,16 @@ static void __cpuinit init_cyrix(struct cpuinfo_x86 *c)
char *buf = c->x86_model_id;
const char *p = NULL;
- /* Bit 31 in normal CPUID used for nonstandard 3DNow ID;
- 3DNow is IDd by bit 31 in extended CPUID (1*32+31) anyway */
- clear_bit(0*32+31, c->x86_capability);
+ /*
+ * Bit 31 in normal CPUID used for nonstandard 3DNow ID;
+ * 3DNow is IDd by bit 31 in extended CPUID (1*32+31) anyway
+ */
+ clear_cpu_cap(c, 0*32+31);
/* Cyrix used bit 24 in extended (AMD) CPUID for Cyrix MMX extensions */
- if ( test_bit(1*32+24, c->x86_capability) ) {
- clear_bit(1*32+24, c->x86_capability);
- set_bit(X86_FEATURE_CXMMX, c->x86_capability);
+ if (test_cpu_cap(c, 1*32+24)) {
+ clear_cpu_cap(c, 1*32+24);
+ set_cpu_cap(c, X86_FEATURE_CXMMX);
}
do_cyrix_devid(&dir0, &dir1);
@@ -213,7 +214,7 @@ static void __cpuinit init_cyrix(struct cpuinfo_x86 *c)
* the model, multiplier and stepping. Black magic included,
* to make the silicon step/rev numbers match the printed ones.
*/
-
+
switch (dir0_msn) {
unsigned char tmp;
@@ -241,7 +242,7 @@ static void __cpuinit init_cyrix(struct cpuinfo_x86 *c)
} else /* 686 */
p = Cx86_cb+1;
/* Emulate MTRRs using Cyrix's ARRs. */
- set_bit(X86_FEATURE_CYRIX_ARR, c->x86_capability);
+ set_cpu_cap(c, X86_FEATURE_CYRIX_ARR);
/* 6x86's contain this bug */
c->coma_bug = 1;
break;
@@ -250,17 +251,18 @@ static void __cpuinit init_cyrix(struct cpuinfo_x86 *c)
#ifdef CONFIG_PCI
{
u32 vendor, device;
- /* It isn't really a PCI quirk directly, but the cure is the
- same. The MediaGX has deep magic SMM stuff that handles the
- SB emulation. It throws away the fifo on disable_dma() which
- is wrong and ruins the audio.
-
- Bug2: VSA1 has a wrap bug so that using maximum sized DMA
- causes bad things. According to NatSemi VSA2 has another
- bug to do with 'hlt'. I've not seen any boards using VSA2
- and X doesn't seem to support it either so who cares 8).
- VSA1 we work around however.
- */
+ /*
+ * It isn't really a PCI quirk directly, but the cure is the
+ * same. The MediaGX has deep magic SMM stuff that handles the
+ * SB emulation. It throws away the fifo on disable_dma() which
+ * is wrong and ruins the audio.
+ *
+ * Bug2: VSA1 has a wrap bug so that using maximum sized DMA
+ * causes bad things. According to NatSemi VSA2 has another
+ * bug to do with 'hlt'. I've not seen any boards using VSA2
+ * and X doesn't seem to support it either so who cares 8).
+ * VSA1 we work around however.
+ */
printk(KERN_INFO "Working around Cyrix MediaGX virtual DMA bugs.\n");
isa_dma_bridge_buggy = 2;
@@ -273,55 +275,51 @@ static void __cpuinit init_cyrix(struct cpuinfo_x86 *c)
/*
* The 5510/5520 companion chips have a funky PIT.
- */
+ */
if (vendor == PCI_VENDOR_ID_CYRIX &&
(device == PCI_DEVICE_ID_CYRIX_5510 || device == PCI_DEVICE_ID_CYRIX_5520))
mark_tsc_unstable("cyrix 5510/5520 detected");
}
#endif
- c->x86_cache_size=16; /* Yep 16K integrated cache thats it */
+ c->x86_cache_size = 16; /* Yep 16K integrated cache thats it */
/* GXm supports extended cpuid levels 'ala' AMD */
if (c->cpuid_level == 2) {
/* Enable cxMMX extensions (GX1 Datasheet 54) */
setCx86(CX86_CCR7, getCx86(CX86_CCR7) | 1);
-
+
/*
* GXm : 0x30 ... 0x5f GXm datasheet 51
* GXlv: 0x6x GXlv datasheet 54
* ? : 0x7x
* GX1 : 0x8x GX1 datasheet 56
*/
- if((0x30 <= dir1 && dir1 <= 0x6f) || (0x80 <=dir1 && dir1 <= 0x8f))
+ if ((0x30 <= dir1 && dir1 <= 0x6f) || (0x80 <= dir1 && dir1 <= 0x8f))
geode_configure();
get_model_name(c); /* get CPU marketing name */
return;
- }
- else { /* MediaGX */
+ } else { /* MediaGX */
Cx86_cb[2] = (dir0_lsn & 1) ? '3' : '4';
p = Cx86_cb+2;
c->x86_model = (dir1 & 0x20) ? 1 : 2;
}
break;
- case 5: /* 6x86MX/M II */
- if (dir1 > 7)
- {
+ case 5: /* 6x86MX/M II */
+ if (dir1 > 7) {
dir0_msn++; /* M II */
/* Enable MMX extensions (App note 108) */
setCx86(CX86_CCR7, getCx86(CX86_CCR7)|1);
- }
- else
- {
+ } else {
c->coma_bug = 1; /* 6x86MX, it has the bug. */
}
tmp = (!(dir0_lsn & 7) || dir0_lsn & 1) ? 2 : 0;
Cx86_cb[tmp] = cyrix_model_mult2[dir0_lsn & 7];
p = Cx86_cb+tmp;
- if (((dir1 & 0x0f) > 4) || ((dir1 & 0xf0) == 0x20))
+ if (((dir1 & 0x0f) > 4) || ((dir1 & 0xf0) == 0x20))
(c->x86_model)++;
/* Emulate MTRRs using Cyrix's ARRs. */
- set_bit(X86_FEATURE_CYRIX_ARR, c->x86_capability);
+ set_cpu_cap(c, X86_FEATURE_CYRIX_ARR);
break;
case 0xf: /* Cyrix 486 without DEVID registers */
@@ -343,7 +341,8 @@ static void __cpuinit init_cyrix(struct cpuinfo_x86 *c)
break;
}
strcpy(buf, Cx86_model[dir0_msn & 7]);
- if (p) strcat(buf, p);
+ if (p)
+ strcat(buf, p);
return;
}
@@ -352,7 +351,8 @@ static void __cpuinit init_cyrix(struct cpuinfo_x86 *c)
*/
static void __cpuinit init_nsc(struct cpuinfo_x86 *c)
{
- /* There may be GX1 processors in the wild that are branded
+ /*
+ * There may be GX1 processors in the wild that are branded
* NSC and not Cyrix.
*
* This function only handles the GX processor, and kicks every
@@ -377,7 +377,7 @@ static void __cpuinit init_nsc(struct cpuinfo_x86 *c)
* by the fact that they preserve the flags across the division of 5/2.
* PII and PPro exhibit this behavior too, but they have cpuid available.
*/
-
+
/*
* Perform the Cyrix 5/2 test. A Cyrix won't change
* the flags, while other 486 chips will.
@@ -398,27 +398,26 @@ static inline int test_cyrix_52div(void)
return (unsigned char) (test >> 8) == 0x02;
}
-static void __cpuinit cyrix_identify(struct cpuinfo_x86 * c)
+static void __cpuinit cyrix_identify(struct cpuinfo_x86 *c)
{
/* Detect Cyrix with disabled CPUID */
- if ( c->x86 == 4 && test_cyrix_52div() ) {
+ if (c->x86 == 4 && test_cyrix_52div()) {
unsigned char dir0, dir1;
-
+
strcpy(c->x86_vendor_id, "CyrixInstead");
- c->x86_vendor = X86_VENDOR_CYRIX;
-
- /* Actually enable cpuid on the older cyrix */
-
- /* Retrieve CPU revisions */
-
+ c->x86_vendor = X86_VENDOR_CYRIX;
+
+ /* Actually enable cpuid on the older cyrix */
+
+ /* Retrieve CPU revisions */
+
do_cyrix_devid(&dir0, &dir1);
- dir0>>=4;
-
+ dir0 >>= 4;
+
/* Check it is an affected model */
-
- if (dir0 == 5 || dir0 == 3)
- {
+
+ if (dir0 == 5 || dir0 == 3) {
unsigned char ccr3;
unsigned long flags;
printk(KERN_INFO "Enabling CPUID on Cyrix processor.\n");
@@ -434,26 +433,17 @@ static void __cpuinit cyrix_identify(struct cpuinfo_x86 * c)
static struct cpu_dev cyrix_cpu_dev __cpuinitdata = {
.c_vendor = "Cyrix",
- .c_ident = { "CyrixInstead" },
+ .c_ident = { "CyrixInstead" },
.c_init = init_cyrix,
.c_identify = cyrix_identify,
};
-int __init cyrix_init_cpu(void)
-{
- cpu_devs[X86_VENDOR_CYRIX] = &cyrix_cpu_dev;
- return 0;
-}
+cpu_vendor_dev_register(X86_VENDOR_CYRIX, &cyrix_cpu_dev);
static struct cpu_dev nsc_cpu_dev __cpuinitdata = {
.c_vendor = "NSC",
- .c_ident = { "Geode by NSC" },
+ .c_ident = { "Geode by NSC" },
.c_init = init_nsc,
};
-int __init nsc_init_cpu(void)
-{
- cpu_devs[X86_VENDOR_NSC] = &nsc_cpu_dev;
- return 0;
-}
-
+cpu_vendor_dev_register(X86_VENDOR_NSC, &nsc_cpu_dev);
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